From 63b4ea22af8e8314dd718f02046de5f4b91edf9d Mon Sep 17 00:00:00 2001 From: Nick Mathewson Date: Thu, 5 Jul 2018 16:31:38 -0400 Subject: Move literally everything out of src/or This commit won't build yet -- it just puts everything in a slightly more logical place. The reasoning here is that "src/core" will hold the stuff that every (or nearly every) tor instance will need in order to do onion routing. Other features (including some necessary ones) will live in "src/feature". The "src/app" directory will hold the stuff needed to have Tor be an application you can actually run. This commit DOES NOT refactor the former contents of src/or into a logical set of acyclic libraries, or change any code at all. That will have to come in the future. We will continue to move things around and split them in the future, but I hope this lays a reasonable groundwork for doing so. --- src/app/config/auth_dirs.inc | 34 + src/app/config/config.c | 8495 ++++++++++++++++++++ src/app/config/config.h | 290 + src/app/config/confparse.c | 1190 +++ src/app/config/confparse.h | 221 + src/app/config/fallback_dirs.inc | 826 ++ src/app/config/or_options_st.h | 1077 +++ src/app/config/or_state_st.h | 86 + src/app/config/statefile.c | 717 ++ src/app/config/statefile.h | 30 + src/app/include.am | 6 +- src/app/main/ntmain.c | 783 ++ src/app/main/ntmain.h | 28 + src/app/main/tor_main.c | 42 + src/app/ntmain.c | 783 -- src/app/ntmain.h | 28 - src/app/tor_main.c | 42 - src/core/crypto/hs_ntor.c | 620 ++ src/core/crypto/hs_ntor.h | 69 + src/core/crypto/onion.c | 1346 ++++ src/core/crypto/onion.h | 128 + src/core/crypto/onion_fast.c | 144 + src/core/crypto/onion_fast.h | 41 + src/core/crypto/onion_ntor.c | 341 + src/core/crypto/onion_ntor.h | 65 + src/core/crypto/onion_tap.c | 246 + src/core/crypto/onion_tap.h | 40 + src/core/crypto/relay_crypto.c | 332 + src/core/crypto/relay_crypto.h | 31 + src/core/mainloop/connection.c | 5331 ++++++++++++ src/core/mainloop/connection.h | 343 + src/core/mainloop/cpuworker.c | 599 ++ src/core/mainloop/cpuworker.h | 37 + src/core/mainloop/main.c | 4311 ++++++++++ src/core/mainloop/main.h | 122 + src/core/mainloop/periodic.c | 172 + src/core/mainloop/periodic.h | 88 + src/core/or/addr_policy_st.h | 46 + src/core/or/address_set.c | 71 + src/core/or/address_set.h | 31 + src/core/or/cell_queue_st.h | 29 + src/core/or/cell_st.h | 20 + src/core/or/channel.c | 3480 ++++++++ src/core/or/channel.h | 780 ++ src/core/or/channelpadding.c | 800 ++ src/core/or/channelpadding.h | 45 + src/core/or/channeltls.c | 2458 ++++++ src/core/or/channeltls.h | 77 + src/core/or/circuit_st.h | 182 + src/core/or/circuitbuild.c | 3098 +++++++ src/core/or/circuitbuild.h | 107 + src/core/or/circuitlist.c | 2742 +++++++ src/core/or/circuitlist.h | 247 + src/core/or/circuitmux.c | 1364 ++++ src/core/or/circuitmux.h | 162 + src/core/or/circuitmux_ewma.c | 829 ++ src/core/or/circuitmux_ewma.h | 30 + src/core/or/circuitstats.c | 1952 +++++ src/core/or/circuitstats.h | 213 + src/core/or/circuituse.c | 3155 ++++++++ src/core/or/circuituse.h | 93 + src/core/or/command.c | 665 ++ src/core/or/command.h | 31 + src/core/or/connection_edge.c | 4224 ++++++++++ src/core/or/connection_edge.h | 248 + src/core/or/connection_or.c | 2996 +++++++ src/core/or/connection_or.h | 165 + src/core/or/connection_st.h | 149 + src/core/or/cpath_build_state_st.h | 38 + src/core/or/crypt_path_reference_st.h | 23 + src/core/or/crypt_path_st.h | 70 + src/core/or/destroy_cell_queue_st.h | 27 + src/core/or/dos.c | 801 ++ src/core/or/dos.h | 140 + src/core/or/edge_connection_st.h | 77 + src/core/or/entry_connection_st.h | 100 + src/core/or/entry_port_cfg_st.h | 54 + src/core/or/extend_info_st.h | 30 + src/core/or/git_revision.c | 17 + src/core/or/git_revision.h | 12 + src/core/or/listener_connection_st.h | 25 + src/core/or/or.h | 1088 +++ src/core/or/or_circuit_st.h | 80 + src/core/or/or_connection_st.h | 92 + src/core/or/or_handshake_certs_st.h | 40 + src/core/or/or_handshake_state_st.h | 78 + src/core/or/origin_circuit_st.h | 290 + src/core/or/policies.c | 3147 ++++++++ src/core/or/policies.h | 187 + src/core/or/port_cfg_st.h | 35 + src/core/or/reasons.c | 497 ++ src/core/or/reasons.h | 34 + src/core/or/relay.c | 3088 +++++++ src/core/or/relay.h | 124 + src/core/or/relay_crypto_st.h | 31 + src/core/or/scheduler.c | 768 ++ src/core/or/scheduler.h | 218 + src/core/or/scheduler_kist.c | 842 ++ src/core/or/scheduler_vanilla.c | 175 + src/core/or/server_port_cfg_st.h | 20 + src/core/or/socks_request_st.h | 75 + src/core/or/status.c | 251 + src/core/or/status.h | 18 + src/core/or/tor_version_st.h | 32 + src/core/or/var_cell_st.h | 23 + src/core/proto/proto_cell.c | 86 + src/core/proto/proto_cell.h | 17 + src/core/proto/proto_control0.c | 26 + src/core/proto/proto_control0.h | 14 + src/core/proto/proto_ext_or.c | 40 + src/core/proto/proto_ext_or.h | 22 + src/core/proto/proto_http.c | 171 + src/core/proto/proto_http.h | 24 + src/core/proto/proto_socks.c | 713 ++ src/core/proto/proto_socks.h | 21 + src/core/proto/protover.c | 923 +++ src/core/proto/protover.h | 97 + src/core/proto/protover_rust.c | 34 + src/feature/api/tor_api.c | 88 + src/feature/api/tor_api.h | 101 + src/feature/api/tor_api_internal.h | 20 + src/feature/client/addressmap.c | 1156 +++ src/feature/client/addressmap.h | 65 + src/feature/client/bridges.c | 937 +++ src/feature/client/bridges.h | 80 + src/feature/client/circpathbias.c | 1578 ++++ src/feature/client/circpathbias.h | 28 + src/feature/client/dnsserv.c | 415 + src/feature/client/dnsserv.h | 27 + src/feature/client/entrynodes.c | 3694 +++++++++ src/feature/client/entrynodes.h | 639 ++ src/feature/client/transports.c | 1738 ++++ src/feature/client/transports.h | 147 + src/feature/control/control.c | 7802 ++++++++++++++++++ src/feature/control/control.h | 415 + src/feature/control/control_connection_st.h | 46 + src/feature/dirauth/dircollate.c | 327 + src/feature/dirauth/dircollate.h | 70 + src/feature/dirauth/dirvote.c | 4568 +++++++++++ src/feature/dirauth/dirvote.h | 247 + src/feature/dirauth/keypin.c | 515 ++ src/feature/dirauth/keypin.h | 47 + src/feature/dirauth/mode.h | 38 + src/feature/dirauth/ns_detached_signatures_st.h | 22 + src/feature/dirauth/shared_random.c | 1291 +++ src/feature/dirauth/shared_random.h | 194 + src/feature/dirauth/shared_random_state.c | 1326 +++ src/feature/dirauth/shared_random_state.h | 146 + src/feature/dirauth/vote_microdesc_hash_st.h | 22 + src/feature/dircache/cached_dir_st.h | 25 + src/feature/dircache/conscache.c | 627 ++ src/feature/dircache/conscache.h | 66 + src/feature/dircache/consdiffmgr.c | 1945 +++++ src/feature/dircache/consdiffmgr.h | 75 + src/feature/dircache/directory.c | 5966 ++++++++++++++ src/feature/dircache/directory.h | 347 + src/feature/dircache/dirserv.c | 3598 +++++++++ src/feature/dircache/dirserv.h | 239 + src/feature/dirclient/dir_server_st.h | 54 + src/feature/dirclient/download_status_st.h | 65 + src/feature/dircommon/consdiff.c | 1414 ++++ src/feature/dircommon/consdiff.h | 99 + src/feature/dircommon/dir_connection_st.h | 67 + src/feature/dircommon/fp_pair.c | 315 + src/feature/dircommon/fp_pair.h | 56 + src/feature/dircommon/vote_timing_st.h | 24 + src/feature/dircommon/voting_schedule.c | 194 + src/feature/dircommon/voting_schedule.h | 65 + src/feature/hibernate/hibernate.c | 1235 +++ src/feature/hibernate/hibernate.h | 61 + src/feature/hs/hs_cache.c | 979 +++ src/feature/hs/hs_cache.h | 130 + src/feature/hs/hs_cell.c | 950 +++ src/feature/hs/hs_cell.h | 122 + src/feature/hs/hs_circuit.c | 1249 +++ src/feature/hs/hs_circuit.h | 75 + src/feature/hs/hs_circuitmap.c | 585 ++ src/feature/hs/hs_circuitmap.h | 112 + src/feature/hs/hs_client.c | 1623 ++++ src/feature/hs/hs_client.h | 92 + src/feature/hs/hs_common.c | 1825 +++++ src/feature/hs/hs_common.h | 288 + src/feature/hs/hs_config.c | 591 ++ src/feature/hs/hs_config.h | 24 + src/feature/hs/hs_control.c | 261 + src/feature/hs/hs_control.h | 52 + src/feature/hs/hs_descriptor.c | 2611 ++++++ src/feature/hs/hs_descriptor.h | 280 + src/feature/hs/hs_ident.c | 127 + src/feature/hs/hs_ident.h | 146 + src/feature/hs/hs_intropoint.c | 614 ++ src/feature/hs/hs_intropoint.h | 79 + src/feature/hs/hs_service.c | 3644 +++++++++ src/feature/hs/hs_service.h | 378 + src/feature/hs/hs_stats.c | 58 + src/feature/hs/hs_stats.h | 14 + src/feature/hs/hsdir_index_st.h | 24 + src/feature/hs_common/replaycache.c | 209 + src/feature/hs_common/replaycache.h | 67 + src/feature/hs_common/shared_random_client.c | 260 + src/feature/hs_common/shared_random_client.h | 47 + src/feature/nodelist/authority_cert_st.h | 32 + src/feature/nodelist/desc_store_st.h | 39 + src/feature/nodelist/document_signature_st.h | 29 + src/feature/nodelist/extrainfo_st.h | 30 + src/feature/nodelist/microdesc.c | 1059 +++ src/feature/nodelist/microdesc.h | 60 + src/feature/nodelist/microdesc_st.h | 74 + src/feature/nodelist/networkstatus.c | 2726 +++++++ src/feature/nodelist/networkstatus.h | 162 + src/feature/nodelist/networkstatus_sr_info_st.h | 23 + src/feature/nodelist/networkstatus_st.h | 101 + src/feature/nodelist/networkstatus_voter_info_st.h | 30 + src/feature/nodelist/node_st.h | 102 + src/feature/nodelist/nodelist.c | 2513 ++++++ src/feature/nodelist/nodelist.h | 168 + src/feature/nodelist/parsecommon.c | 458 ++ src/feature/nodelist/parsecommon.h | 324 + src/feature/nodelist/routerinfo_st.h | 108 + src/feature/nodelist/routerlist.c | 5848 ++++++++++++++ src/feature/nodelist/routerlist.h | 347 + src/feature/nodelist/routerlist_st.h | 40 + src/feature/nodelist/routerparse.c | 5693 +++++++++++++ src/feature/nodelist/routerparse.h | 161 + src/feature/nodelist/routerset.c | 463 ++ src/feature/nodelist/routerset.h | 89 + src/feature/nodelist/routerstatus_st.h | 80 + src/feature/nodelist/signed_descriptor_st.h | 61 + src/feature/nodelist/torcert.c | 725 ++ src/feature/nodelist/torcert.h | 110 + src/feature/nodelist/vote_routerstatus_st.h | 41 + src/feature/relay/dns.c | 2143 +++++ src/feature/relay/dns.h | 70 + src/feature/relay/dns_structs.h | 102 + src/feature/relay/ext_orport.c | 662 ++ src/feature/relay/ext_orport.h | 64 + src/feature/relay/router.c | 3832 +++++++++ src/feature/relay/router.h | 161 + src/feature/relay/routerkeys.c | 1413 ++++ src/feature/relay/routerkeys.h | 85 + src/feature/rend/rend_authorized_client_st.h | 18 + .../rend/rend_encoded_v2_service_descriptor_st.h | 17 + src/feature/rend/rend_intro_point_st.h | 76 + src/feature/rend/rend_service_descriptor_st.h | 34 + src/feature/rend/rendcache.c | 1008 +++ src/feature/rend/rendcache.h | 130 + src/feature/rend/rendclient.c | 1257 +++ src/feature/rend/rendclient.h | 54 + src/feature/rend/rendcommon.c | 1056 +++ src/feature/rend/rendcommon.h | 82 + src/feature/rend/rendmid.c | 370 + src/feature/rend/rendmid.h | 25 + src/feature/rend/rendservice.c | 4451 ++++++++++ src/feature/rend/rendservice.h | 221 + src/feature/stats/geoip.c | 1889 +++++ src/feature/stats/geoip.h | 157 + src/feature/stats/rephist.c | 3220 ++++++++ src/feature/stats/rephist.h | 140 + src/or/Makefile.nmake | 79 - src/or/addr_policy_st.h | 46 - src/or/address_set.c | 71 - src/or/address_set.h | 31 - src/or/addressmap.c | 1156 --- src/or/addressmap.h | 65 - src/or/auth_dirs.inc | 34 - src/or/authority_cert_st.h | 32 - src/or/bridges.c | 937 --- src/or/bridges.h | 80 - src/or/cached_dir_st.h | 25 - src/or/cell_queue_st.h | 29 - src/or/cell_st.h | 20 - src/or/channel.c | 3480 -------- src/or/channel.h | 780 -- src/or/channelpadding.c | 800 -- src/or/channelpadding.h | 45 - src/or/channeltls.c | 2458 ------ src/or/channeltls.h | 77 - src/or/circpathbias.c | 1578 ---- src/or/circpathbias.h | 28 - src/or/circuit_st.h | 182 - src/or/circuitbuild.c | 3098 ------- src/or/circuitbuild.h | 107 - src/or/circuitlist.c | 2742 ------- src/or/circuitlist.h | 247 - src/or/circuitmux.c | 1364 ---- src/or/circuitmux.h | 162 - src/or/circuitmux_ewma.c | 829 -- src/or/circuitmux_ewma.h | 30 - src/or/circuitstats.c | 1952 ----- src/or/circuitstats.h | 213 - src/or/circuituse.c | 3155 -------- src/or/circuituse.h | 93 - src/or/command.c | 665 -- src/or/command.h | 31 - src/or/config.c | 8495 -------------------- src/or/config.h | 290 - src/or/confparse.c | 1190 --- src/or/confparse.h | 221 - src/or/connection.c | 5331 ------------ src/or/connection.h | 343 - src/or/connection_edge.c | 4224 ---------- src/or/connection_edge.h | 248 - src/or/connection_or.c | 2996 ------- src/or/connection_or.h | 165 - src/or/connection_st.h | 149 - src/or/conscache.c | 627 -- src/or/conscache.h | 66 - src/or/consdiff.c | 1414 ---- src/or/consdiff.h | 99 - src/or/consdiffmgr.c | 1945 ----- src/or/consdiffmgr.h | 75 - src/or/control.c | 7802 ------------------ src/or/control.h | 415 - src/or/control_connection_st.h | 46 - src/or/cpath_build_state_st.h | 38 - src/or/cpuworker.c | 599 -- src/or/cpuworker.h | 37 - src/or/crypt_path_reference_st.h | 23 - src/or/crypt_path_st.h | 70 - src/or/desc_store_st.h | 39 - src/or/destroy_cell_queue_st.h | 27 - src/or/dir_connection_st.h | 67 - src/or/dir_server_st.h | 54 - src/or/dirauth/dircollate.c | 327 - src/or/dirauth/dircollate.h | 70 - src/or/dirauth/dirvote.c | 4568 ----------- src/or/dirauth/dirvote.h | 247 - src/or/dirauth/mode.h | 38 - src/or/dirauth/shared_random.c | 1291 --- src/or/dirauth/shared_random.h | 194 - src/or/dirauth/shared_random_state.c | 1326 --- src/or/dirauth/shared_random_state.h | 146 - src/or/directory.c | 5966 -------------- src/or/directory.h | 347 - src/or/dirserv.c | 3598 --------- src/or/dirserv.h | 239 - src/or/dns.c | 2143 ----- src/or/dns.h | 70 - src/or/dns_structs.h | 102 - src/or/dnsserv.c | 415 - src/or/dnsserv.h | 27 - src/or/document_signature_st.h | 29 - src/or/dos.c | 801 -- src/or/dos.h | 140 - src/or/download_status_st.h | 65 - src/or/edge_connection_st.h | 77 - src/or/entry_connection_st.h | 100 - src/or/entry_port_cfg_st.h | 54 - src/or/entrynodes.c | 3694 --------- src/or/entrynodes.h | 639 -- src/or/ext_orport.c | 662 -- src/or/ext_orport.h | 64 - src/or/extend_info_st.h | 30 - src/or/extrainfo_st.h | 30 - src/or/fallback_dirs.inc | 826 -- src/or/fp_pair.c | 315 - src/or/fp_pair.h | 56 - src/or/geoip.c | 1889 ----- src/or/geoip.h | 157 - src/or/git_revision.c | 17 - src/or/git_revision.h | 12 - src/or/hibernate.c | 1235 --- src/or/hibernate.h | 61 - src/or/hs_cache.c | 979 --- src/or/hs_cache.h | 130 - src/or/hs_cell.c | 950 --- src/or/hs_cell.h | 122 - src/or/hs_circuit.c | 1249 --- src/or/hs_circuit.h | 75 - src/or/hs_circuitmap.c | 585 -- src/or/hs_circuitmap.h | 112 - src/or/hs_client.c | 1623 ---- src/or/hs_client.h | 92 - src/or/hs_common.c | 1825 ----- src/or/hs_common.h | 288 - src/or/hs_config.c | 591 -- src/or/hs_config.h | 24 - src/or/hs_control.c | 261 - src/or/hs_control.h | 52 - src/or/hs_descriptor.c | 2611 ------ src/or/hs_descriptor.h | 280 - src/or/hs_ident.c | 127 - src/or/hs_ident.h | 146 - src/or/hs_intropoint.c | 614 -- src/or/hs_intropoint.h | 79 - src/or/hs_ntor.c | 620 -- src/or/hs_ntor.h | 69 - src/or/hs_service.c | 3644 --------- src/or/hs_service.h | 378 - src/or/hs_stats.c | 58 - src/or/hs_stats.h | 14 - src/or/hsdir_index_st.h | 24 - src/or/keypin.c | 515 -- src/or/keypin.h | 47 - src/or/listener_connection_st.h | 25 - src/or/main.c | 4311 ---------- src/or/main.h | 122 - src/or/microdesc.c | 1059 --- src/or/microdesc.h | 60 - src/or/microdesc_st.h | 74 - src/or/networkstatus.c | 2726 ------- src/or/networkstatus.h | 162 - src/or/networkstatus_sr_info_st.h | 23 - src/or/networkstatus_st.h | 101 - src/or/networkstatus_voter_info_st.h | 30 - src/or/node_st.h | 102 - src/or/nodelist.c | 2513 ------ src/or/nodelist.h | 168 - src/or/ns_detached_signatures_st.h | 22 - src/or/onion.c | 1346 ---- src/or/onion.h | 128 - src/or/onion_fast.c | 144 - src/or/onion_fast.h | 41 - src/or/onion_ntor.c | 341 - src/or/onion_ntor.h | 65 - src/or/onion_tap.c | 246 - src/or/onion_tap.h | 40 - src/or/or.h | 1088 --- src/or/or_circuit_st.h | 80 - src/or/or_connection_st.h | 92 - src/or/or_handshake_certs_st.h | 40 - src/or/or_handshake_state_st.h | 78 - src/or/or_options_st.h | 1077 --- src/or/or_state_st.h | 86 - src/or/origin_circuit_st.h | 290 - src/or/parsecommon.c | 458 -- src/or/parsecommon.h | 324 - src/or/periodic.c | 172 - src/or/periodic.h | 88 - src/or/policies.c | 3147 -------- src/or/policies.h | 187 - src/or/port_cfg_st.h | 35 - src/or/proto_cell.c | 86 - src/or/proto_cell.h | 17 - src/or/proto_control0.c | 26 - src/or/proto_control0.h | 14 - src/or/proto_ext_or.c | 40 - src/or/proto_ext_or.h | 22 - src/or/proto_http.c | 171 - src/or/proto_http.h | 24 - src/or/proto_socks.c | 713 -- src/or/proto_socks.h | 21 - src/or/protover.c | 923 --- src/or/protover.h | 97 - src/or/protover_rust.c | 34 - src/or/reasons.c | 497 -- src/or/reasons.h | 34 - src/or/relay.c | 3088 ------- src/or/relay.h | 124 - src/or/relay_crypto.c | 332 - src/or/relay_crypto.h | 31 - src/or/relay_crypto_st.h | 31 - src/or/rend_authorized_client_st.h | 18 - src/or/rend_encoded_v2_service_descriptor_st.h | 17 - src/or/rend_intro_point_st.h | 76 - src/or/rend_service_descriptor_st.h | 34 - src/or/rendcache.c | 1008 --- src/or/rendcache.h | 130 - src/or/rendclient.c | 1257 --- src/or/rendclient.h | 54 - src/or/rendcommon.c | 1056 --- src/or/rendcommon.h | 82 - src/or/rendmid.c | 370 - src/or/rendmid.h | 25 - src/or/rendservice.c | 4451 ---------- src/or/rendservice.h | 221 - src/or/rephist.c | 3220 -------- src/or/rephist.h | 140 - src/or/replaycache.c | 209 - src/or/replaycache.h | 67 - src/or/router.c | 3832 --------- src/or/router.h | 161 - src/or/routerinfo_st.h | 108 - src/or/routerkeys.c | 1413 ---- src/or/routerkeys.h | 85 - src/or/routerlist.c | 5848 -------------- src/or/routerlist.h | 347 - src/or/routerlist_st.h | 40 - src/or/routerparse.c | 5693 ------------- src/or/routerparse.h | 161 - src/or/routerset.c | 463 -- src/or/routerset.h | 89 - src/or/routerstatus_st.h | 80 - src/or/scheduler.c | 768 -- src/or/scheduler.h | 218 - src/or/scheduler_kist.c | 842 -- src/or/scheduler_vanilla.c | 175 - src/or/server_port_cfg_st.h | 20 - src/or/shared_random_client.c | 260 - src/or/shared_random_client.h | 47 - src/or/signed_descriptor_st.h | 61 - src/or/socks_request_st.h | 75 - src/or/statefile.c | 717 -- src/or/statefile.h | 30 - src/or/status.c | 251 - src/or/status.h | 18 - src/or/tor_api.c | 88 - src/or/tor_api.h | 101 - src/or/tor_api_internal.h | 20 - src/or/tor_version_st.h | 32 - src/or/torcert.c | 725 -- src/or/torcert.h | 110 - src/or/transports.c | 1738 ---- src/or/transports.h | 147 - src/or/var_cell_st.h | 23 - src/or/vote_microdesc_hash_st.h | 22 - src/or/vote_routerstatus_st.h | 41 - src/or/vote_timing_st.h | 24 - src/or/voting_schedule.c | 194 - src/or/voting_schedule.h | 65 - 510 files changed, 179827 insertions(+), 179906 deletions(-) create mode 100644 src/app/config/auth_dirs.inc create mode 100644 src/app/config/config.c create mode 100644 src/app/config/config.h create mode 100644 src/app/config/confparse.c create mode 100644 src/app/config/confparse.h create mode 100644 src/app/config/fallback_dirs.inc create mode 100644 src/app/config/or_options_st.h create mode 100644 src/app/config/or_state_st.h create mode 100644 src/app/config/statefile.c create mode 100644 src/app/config/statefile.h create mode 100644 src/app/main/ntmain.c create mode 100644 src/app/main/ntmain.h create mode 100644 src/app/main/tor_main.c delete mode 100644 src/app/ntmain.c delete mode 100644 src/app/ntmain.h delete mode 100644 src/app/tor_main.c create mode 100644 src/core/crypto/hs_ntor.c create mode 100644 src/core/crypto/hs_ntor.h create mode 100644 src/core/crypto/onion.c create mode 100644 src/core/crypto/onion.h create mode 100644 src/core/crypto/onion_fast.c create mode 100644 src/core/crypto/onion_fast.h create mode 100644 src/core/crypto/onion_ntor.c create mode 100644 src/core/crypto/onion_ntor.h create mode 100644 src/core/crypto/onion_tap.c create mode 100644 src/core/crypto/onion_tap.h create mode 100644 src/core/crypto/relay_crypto.c create mode 100644 src/core/crypto/relay_crypto.h create mode 100644 src/core/mainloop/connection.c create mode 100644 src/core/mainloop/connection.h create mode 100644 src/core/mainloop/cpuworker.c create mode 100644 src/core/mainloop/cpuworker.h create mode 100644 src/core/mainloop/main.c create mode 100644 src/core/mainloop/main.h create mode 100644 src/core/mainloop/periodic.c create mode 100644 src/core/mainloop/periodic.h create mode 100644 src/core/or/addr_policy_st.h create mode 100644 src/core/or/address_set.c create mode 100644 src/core/or/address_set.h create mode 100644 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delete mode 100644 src/or/var_cell_st.h delete mode 100644 src/or/vote_microdesc_hash_st.h delete mode 100644 src/or/vote_routerstatus_st.h delete mode 100644 src/or/vote_timing_st.h delete mode 100644 src/or/voting_schedule.c delete mode 100644 src/or/voting_schedule.h (limited to 'src') diff --git a/src/app/config/auth_dirs.inc b/src/app/config/auth_dirs.inc new file mode 100644 index 0000000000..e0937541ea --- /dev/null +++ b/src/app/config/auth_dirs.inc @@ -0,0 +1,34 @@ +"moria1 orport=9101 " + "v3ident=D586D18309DED4CD6D57C18FDB97EFA96D330566 " + "128.31.0.39:9131 9695 DFC3 5FFE B861 329B 9F1A B04C 4639 7020 CE31", +"tor26 orport=443 " + "v3ident=14C131DFC5C6F93646BE72FA1401C02A8DF2E8B4 " + "ipv6=[2001:858:2:2:aabb:0:563b:1526]:443 " + "86.59.21.38:80 847B 1F85 0344 D787 6491 A548 92F9 0493 4E4E B85D", +"dizum orport=443 " + "v3ident=E8A9C45EDE6D711294FADF8E7951F4DE6CA56B58 " + "194.109.206.212:80 7EA6 EAD6 FD83 083C 538F 4403 8BBF A077 587D D755", +"Bifroest orport=443 bridge " + "37.218.247.217:80 1D8F 3A91 C37C 5D1C 4C19 B1AD 1D0C FBE8 BF72 D8E1", +"gabelmoo orport=443 " + "v3ident=ED03BB616EB2F60BEC80151114BB25CEF515B226 " + "ipv6=[2001:638:a000:4140::ffff:189]:443 " + "131.188.40.189:80 F204 4413 DAC2 E02E 3D6B CF47 35A1 9BCA 1DE9 7281", +"dannenberg orport=443 " + "v3ident=0232AF901C31A04EE9848595AF9BB7620D4C5B2E " + "ipv6=[2001:678:558:1000::244]:443 " + "193.23.244.244:80 7BE6 83E6 5D48 1413 21C5 ED92 F075 C553 64AC 7123", +"maatuska orport=80 " + "v3ident=49015F787433103580E3B66A1707A00E60F2D15B " + "ipv6=[2001:67c:289c::9]:80 " + "171.25.193.9:443 BD6A 8292 55CB 08E6 6FBE 7D37 4836 3586 E46B 3810", +"Faravahar orport=443 " + "v3ident=EFCBE720AB3A82B99F9E953CD5BF50F7EEFC7B97 " + "154.35.175.225:80 CF6D 0AAF B385 BE71 B8E1 11FC 5CFF 4B47 9237 33BC", +"longclaw orport=443 " + "v3ident=23D15D965BC35114467363C165C4F724B64B4F66 " + "199.58.81.140:80 74A9 1064 6BCE EFBC D2E8 74FC 1DC9 9743 0F96 8145", +"bastet orport=443 " + "v3ident=27102BC123E7AF1D4741AE047E160C91ADC76B21 " + "ipv6=[2620:13:4000:6000::1000:118]:443 " + "204.13.164.118:80 24E2 F139 121D 4394 C54B 5BCC 368B 3B41 1857 C413", diff --git a/src/app/config/config.c b/src/app/config/config.c new file mode 100644 index 0000000000..9b2706982a --- /dev/null +++ b/src/app/config/config.c @@ -0,0 +1,8495 @@ + +/* Copyright (c) 2001 Matej Pfajfar. + * Copyright (c) 2001-2004, Roger Dingledine. + * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson. + * Copyright (c) 2007-2018, The Tor Project, Inc. */ +/* See LICENSE for licensing information */ + +/** + * \file config.c + * \brief Code to interpret the user's configuration of Tor. + * + * This module handles torrc configuration file, including parsing it, + * combining it with torrc.defaults and the command line, allowing + * user changes to it (via editing and SIGHUP or via the control port), + * writing it back to disk (because of SAVECONF from the control port), + * and -- most importantly, acting on it. + * + * The module additionally has some tools for manipulating and + * inspecting values that are calculated as a result of the + * configured options. + * + *

How to add new options

+ * + * To add new items to the torrc, there are a minimum of three places to edit: + * + * + * Additionally, you might need to edit these places too: + * + * + *

Changing the value of an option

+ * + * Because of the SAVECONF command from the control port, it's a bad + * idea to change the value of any user-configured option in the + * or_options_t. If you want to sometimes do this anyway, we recommend + * that you create a secondary field in or_options_t; that you have the + * user option linked only to the secondary field; that you use the + * secondary field to initialize the one that Tor actually looks at; and that + * you use the one Tor looks as the one that you modify. + **/ + +#define CONFIG_PRIVATE +#include "or/or.h" +#include "or/bridges.h" +#include "or/addressmap.h" +#include "or/channel.h" +#include "or/circuitbuild.h" +#include "or/circuitlist.h" +#include "or/circuitmux.h" +#include "or/circuitmux_ewma.h" +#include "or/circuitstats.h" +#include "lib/compress/compress.h" +#include "or/config.h" +#include "lib/encoding/confline.h" +#include "or/connection.h" +#include "or/connection_edge.h" +#include "or/connection_or.h" +#include "or/consdiffmgr.h" +#include "or/control.h" +#include "or/confparse.h" +#include "or/cpuworker.h" +#include "lib/crypt_ops/crypto_rand.h" +#include "lib/crypt_ops/crypto_util.h" +#include "or/dirserv.h" +#include "or/dns.h" +#include "or/dos.h" +#include "or/entrynodes.h" +#include "or/git_revision.h" +#include "or/geoip.h" +#include "or/hibernate.h" +#include "or/main.h" +#include "or/networkstatus.h" +#include "or/nodelist.h" +#include "or/policies.h" +#include "or/relay.h" +#include "or/rendclient.h" +#include "or/rendservice.h" +#include "or/hs_config.h" +#include "or/rephist.h" +#include "or/router.h" +#include "lib/sandbox/sandbox.h" +#include "or/routerlist.h" +#include "or/routerset.h" +#include "or/scheduler.h" +#include "or/statefile.h" +#include "or/transports.h" +#include "or/ext_orport.h" +#include "or/voting_schedule.h" +#ifdef _WIN32 +#include +#endif +#ifdef HAVE_FCNTL_H +#include +#endif +#ifdef HAVE_SYS_STAT_H +#include +#endif +#ifdef HAVE_UNISTD_H +#include +#endif + +#include "lib/meminfo/meminfo.h" +#include "lib/osinfo/uname.h" +#include "lib/process/daemon.h" +#include "lib/process/pidfile.h" +#include "lib/process/restrict.h" +#include "lib/process/setuid.h" +#include "lib/process/subprocess.h" +#include "lib/net/gethostname.h" +#include "lib/thread/numcpus.h" + +#include "lib/encoding/keyval.h" +#include "lib/fs/conffile.h" +#include "lib/evloop/procmon.h" + +#include "or/dirauth/dirvote.h" +#include "or/dirauth/mode.h" + +#include "or/connection_st.h" +#include "or/port_cfg_st.h" + +#ifdef HAVE_SYSTEMD +# if defined(__COVERITY__) && !defined(__INCLUDE_LEVEL__) +/* Systemd's use of gcc's __INCLUDE_LEVEL__ extension macro appears to confuse + * Coverity. Here's a kludge to unconfuse it. + */ +# define __INCLUDE_LEVEL__ 2 +#endif /* defined(__COVERITY__) && !defined(__INCLUDE_LEVEL__) */ +#include +#endif /* defined(HAVE_SYSTEMD) */ + +/* Prefix used to indicate a Unix socket in a FooPort configuration. */ +static const char unix_socket_prefix[] = "unix:"; +/* Prefix used to indicate a Unix socket with spaces in it, in a FooPort + * configuration. */ +static const char unix_q_socket_prefix[] = "unix:\""; + +/* limits for TCP send and recv buffer size used for constrained sockets */ +#define MIN_CONSTRAINED_TCP_BUFFER 2048 +#define MAX_CONSTRAINED_TCP_BUFFER 262144 /* 256k */ + +/** macro to help with the bulk rename of *DownloadSchedule to + * *DowloadInitialDelay . */ +#define DOWNLOAD_SCHEDULE(name) \ + { #name "DownloadSchedule", #name "DownloadInitialDelay", 0, 1 } + +/** A list of abbreviations and aliases to map command-line options, obsolete + * option names, or alternative option names, to their current values. */ +static config_abbrev_t option_abbrevs_[] = { + PLURAL(AuthDirBadDirCC), + PLURAL(AuthDirBadExitCC), + PLURAL(AuthDirInvalidCC), + PLURAL(AuthDirRejectCC), + PLURAL(EntryNode), + PLURAL(ExcludeNode), + PLURAL(Tor2webRendezvousPoint), + PLURAL(FirewallPort), + PLURAL(LongLivedPort), + PLURAL(HiddenServiceNode), + PLURAL(HiddenServiceExcludeNode), + PLURAL(NumCPU), + PLURAL(RendNode), + PLURAL(RecommendedPackage), + PLURAL(RendExcludeNode), + PLURAL(StrictEntryNode), + PLURAL(StrictExitNode), + PLURAL(StrictNode), + { "l", "Log", 1, 0}, + { "AllowUnverifiedNodes", "AllowInvalidNodes", 0, 0}, + { "AutomapHostSuffixes", "AutomapHostsSuffixes", 0, 0}, + { "AutomapHostOnResolve", "AutomapHostsOnResolve", 0, 0}, + { "BandwidthRateBytes", "BandwidthRate", 0, 0}, + { "BandwidthBurstBytes", "BandwidthBurst", 0, 0}, + { "DirFetchPostPeriod", "StatusFetchPeriod", 0, 0}, + { "DirServer", "DirAuthority", 0, 0}, /* XXXX later, make this warn? */ + { "MaxConn", "ConnLimit", 0, 1}, + { "MaxMemInCellQueues", "MaxMemInQueues", 0, 0}, + { "ORBindAddress", "ORListenAddress", 0, 0}, + { "DirBindAddress", "DirListenAddress", 0, 0}, + { "SocksBindAddress", "SocksListenAddress", 0, 0}, + { "UseHelperNodes", "UseEntryGuards", 0, 0}, + { "NumHelperNodes", "NumEntryGuards", 0, 0}, + { "UseEntryNodes", "UseEntryGuards", 0, 0}, + { "NumEntryNodes", "NumEntryGuards", 0, 0}, + { "ResolvConf", "ServerDNSResolvConfFile", 0, 1}, + { "SearchDomains", "ServerDNSSearchDomains", 0, 1}, + { "ServerDNSAllowBrokenResolvConf", "ServerDNSAllowBrokenConfig", 0, 0}, + { "PreferTunnelledDirConns", "PreferTunneledDirConns", 0, 0}, + { "BridgeAuthoritativeDirectory", "BridgeAuthoritativeDir", 0, 0}, + { "HashedControlPassword", "__HashedControlSessionPassword", 1, 0}, + { "VirtualAddrNetwork", "VirtualAddrNetworkIPv4", 0, 0}, + { "SocksSocketsGroupWritable", "UnixSocksGroupWritable", 0, 1}, + { "_HSLayer2Nodes", "HSLayer2Nodes", 0, 1 }, + { "_HSLayer3Nodes", "HSLayer3Nodes", 0, 1 }, + + DOWNLOAD_SCHEDULE(ClientBootstrapConsensusAuthority), + DOWNLOAD_SCHEDULE(ClientBootstrapConsensusAuthorityOnly), + DOWNLOAD_SCHEDULE(ClientBootstrapConsensusFallback), + DOWNLOAD_SCHEDULE(TestingBridge), + DOWNLOAD_SCHEDULE(TestingBridgeBootstrap), + DOWNLOAD_SCHEDULE(TestingClient), + DOWNLOAD_SCHEDULE(TestingClientConsensus), + DOWNLOAD_SCHEDULE(TestingServer), + DOWNLOAD_SCHEDULE(TestingServerConsensus), + + { NULL, NULL, 0, 0}, +}; + +/** dummy instance of or_options_t, used for type-checking its + * members with CONF_CHECK_VAR_TYPE. */ +DUMMY_TYPECHECK_INSTANCE(or_options_t); + +/** An entry for config_vars: "The option name has type + * CONFIG_TYPE_conftype, and corresponds to + * or_options_t.member" + */ +#define VAR(name,conftype,member,initvalue) \ + { name, CONFIG_TYPE_ ## conftype, offsetof(or_options_t, member), \ + initvalue CONF_TEST_MEMBERS(or_options_t, conftype, member) } +/** As VAR, but the option name and member name are the same. */ +#define V(member,conftype,initvalue) \ + VAR(#member, conftype, member, initvalue) +/** An entry for config_vars: "The option name is obsolete." */ +#ifdef TOR_UNIT_TESTS +#define OBSOLETE(name) { name, CONFIG_TYPE_OBSOLETE, 0, NULL, {.INT=NULL} } +#else +#define OBSOLETE(name) { name, CONFIG_TYPE_OBSOLETE, 0, NULL } +#endif + +/** + * Macro to declare *Port options. Each one comes in three entries. + * For example, most users should use "SocksPort" to configure the + * socks port, but TorBrowser wants to use __SocksPort so that it + * isn't stored by SAVECONF. The SocksPortLines virtual option is + * used to query both options from the controller. + */ +#define VPORT(member) \ + VAR(#member "Lines", LINELIST_V, member ## _lines, NULL), \ + VAR(#member, LINELIST_S, member ## _lines, NULL), \ + VAR("__" #member, LINELIST_S, member ## _lines, NULL) + +/** Array of configuration options. Until we disallow nonstandard + * abbreviations, order is significant, since the first matching option will + * be chosen first. + */ +static config_var_t option_vars_[] = { + V(AccountingMax, MEMUNIT, "0 bytes"), + VAR("AccountingRule", STRING, AccountingRule_option, "max"), + V(AccountingStart, STRING, NULL), + V(Address, STRING, NULL), + OBSOLETE("AllowDotExit"), + OBSOLETE("AllowInvalidNodes"), + V(AllowNonRFC953Hostnames, BOOL, "0"), + OBSOLETE("AllowSingleHopCircuits"), + OBSOLETE("AllowSingleHopExits"), + V(AlternateBridgeAuthority, LINELIST, NULL), + V(AlternateDirAuthority, LINELIST, NULL), + OBSOLETE("AlternateHSAuthority"), + V(AssumeReachable, BOOL, "0"), + OBSOLETE("AuthDirBadDir"), + OBSOLETE("AuthDirBadDirCCs"), + V(AuthDirBadExit, LINELIST, NULL), + V(AuthDirBadExitCCs, CSV, ""), + V(AuthDirInvalid, LINELIST, NULL), + V(AuthDirInvalidCCs, CSV, ""), + V(AuthDirFastGuarantee, MEMUNIT, "100 KB"), + V(AuthDirGuardBWGuarantee, MEMUNIT, "2 MB"), + V(AuthDirPinKeys, BOOL, "1"), + V(AuthDirReject, LINELIST, NULL), + V(AuthDirRejectCCs, CSV, ""), + OBSOLETE("AuthDirRejectUnlisted"), + OBSOLETE("AuthDirListBadDirs"), + V(AuthDirListBadExits, BOOL, "0"), + V(AuthDirMaxServersPerAddr, UINT, "2"), + OBSOLETE("AuthDirMaxServersPerAuthAddr"), + V(AuthDirHasIPv6Connectivity, BOOL, "0"), + VAR("AuthoritativeDirectory", BOOL, AuthoritativeDir, "0"), + V(AutomapHostsOnResolve, BOOL, "0"), + V(AutomapHostsSuffixes, CSV, ".onion,.exit"), + V(AvoidDiskWrites, BOOL, "0"), + V(BandwidthBurst, MEMUNIT, "1 GB"), + V(BandwidthRate, MEMUNIT, "1 GB"), + V(BridgeAuthoritativeDir, BOOL, "0"), + VAR("Bridge", LINELIST, Bridges, NULL), + V(BridgePassword, STRING, NULL), + V(BridgeRecordUsageByCountry, BOOL, "1"), + V(BridgeRelay, BOOL, "0"), + V(BridgeDistribution, STRING, NULL), + VAR("CacheDirectory", FILENAME, CacheDirectory_option, NULL), + V(CacheDirectoryGroupReadable, BOOL, "0"), + V(CellStatistics, BOOL, "0"), + V(PaddingStatistics, BOOL, "1"), + V(LearnCircuitBuildTimeout, BOOL, "1"), + V(CircuitBuildTimeout, INTERVAL, "0"), + OBSOLETE("CircuitIdleTimeout"), + V(CircuitsAvailableTimeout, INTERVAL, "0"), + V(CircuitStreamTimeout, INTERVAL, "0"), + V(CircuitPriorityHalflife, DOUBLE, "-1.0"), /*negative:'Use default'*/ + V(ClientDNSRejectInternalAddresses, BOOL,"1"), + V(ClientOnly, BOOL, "0"), + V(ClientPreferIPv6ORPort, AUTOBOOL, "auto"), + V(ClientPreferIPv6DirPort, AUTOBOOL, "auto"), + V(ClientRejectInternalAddresses, BOOL, "1"), + V(ClientTransportPlugin, LINELIST, NULL), + V(ClientUseIPv6, BOOL, "0"), + V(ClientUseIPv4, BOOL, "1"), + V(ConsensusParams, STRING, NULL), + V(ConnLimit, UINT, "1000"), + V(ConnDirectionStatistics, BOOL, "0"), + V(ConstrainedSockets, BOOL, "0"), + V(ConstrainedSockSize, MEMUNIT, "8192"), + V(ContactInfo, STRING, NULL), + OBSOLETE("ControlListenAddress"), + VPORT(ControlPort), + V(ControlPortFileGroupReadable,BOOL, "0"), + V(ControlPortWriteToFile, FILENAME, NULL), + V(ControlSocket, LINELIST, NULL), + V(ControlSocketsGroupWritable, BOOL, "0"), + V(UnixSocksGroupWritable, BOOL, "0"), + V(CookieAuthentication, BOOL, "0"), + V(CookieAuthFileGroupReadable, BOOL, "0"), + V(CookieAuthFile, STRING, NULL), + V(CountPrivateBandwidth, BOOL, "0"), + VAR("DataDirectory", FILENAME, DataDirectory_option, NULL), + V(DataDirectoryGroupReadable, BOOL, "0"), + V(DisableOOSCheck, BOOL, "1"), + V(DisableNetwork, BOOL, "0"), + V(DirAllowPrivateAddresses, BOOL, "0"), + V(TestingAuthDirTimeToLearnReachability, INTERVAL, "30 minutes"), + OBSOLETE("DirListenAddress"), + V(DirPolicy, LINELIST, NULL), + VPORT(DirPort), + V(DirPortFrontPage, FILENAME, NULL), + VAR("DirReqStatistics", BOOL, DirReqStatistics_option, "1"), + VAR("DirAuthority", LINELIST, DirAuthorities, NULL), + V(DirCache, BOOL, "1"), + /* A DirAuthorityFallbackRate of 0.1 means that 0.5% of clients try an + * authority when all fallbacks are up, and 2% try an authority when 25% of + * fallbacks are down. (We rebuild the list when 25% of fallbacks are down). + * + * We want to reduce load on authorities, but keep these two figures within + * an order of magnitude, so there isn't too much load shifting to + * authorities when fallbacks go down. */ + V(DirAuthorityFallbackRate, DOUBLE, "0.1"), + V(DisableAllSwap, BOOL, "0"), + V(DisableDebuggerAttachment, BOOL, "1"), + OBSOLETE("DisableIOCP"), + OBSOLETE("DisableV2DirectoryInfo_"), + OBSOLETE("DynamicDHGroups"), + VPORT(DNSPort), + OBSOLETE("DNSListenAddress"), + /* DoS circuit creation options. */ + V(DoSCircuitCreationEnabled, AUTOBOOL, "auto"), + V(DoSCircuitCreationMinConnections, UINT, "0"), + V(DoSCircuitCreationRate, UINT, "0"), + V(DoSCircuitCreationBurst, UINT, "0"), + V(DoSCircuitCreationDefenseType, INT, "0"), + V(DoSCircuitCreationDefenseTimePeriod, INTERVAL, "0"), + /* DoS connection options. */ + V(DoSConnectionEnabled, AUTOBOOL, "auto"), + V(DoSConnectionMaxConcurrentCount, UINT, "0"), + V(DoSConnectionDefenseType, INT, "0"), + /* DoS single hop client options. */ + V(DoSRefuseSingleHopClientRendezvous, AUTOBOOL, "auto"), + V(DownloadExtraInfo, BOOL, "0"), + V(TestingEnableConnBwEvent, BOOL, "0"), + V(TestingEnableCellStatsEvent, BOOL, "0"), + OBSOLETE("TestingEnableTbEmptyEvent"), + V(EnforceDistinctSubnets, BOOL, "1"), + V(EntryNodes, ROUTERSET, NULL), + V(EntryStatistics, BOOL, "0"), + V(TestingEstimatedDescriptorPropagationTime, INTERVAL, "10 minutes"), + V(ExcludeNodes, ROUTERSET, NULL), + V(ExcludeExitNodes, ROUTERSET, NULL), + OBSOLETE("ExcludeSingleHopRelays"), + V(ExitNodes, ROUTERSET, NULL), + V(ExitPolicy, LINELIST, NULL), + V(ExitPolicyRejectPrivate, BOOL, "1"), + V(ExitPolicyRejectLocalInterfaces, BOOL, "0"), + V(ExitPortStatistics, BOOL, "0"), + V(ExtendAllowPrivateAddresses, BOOL, "0"), + V(ExitRelay, AUTOBOOL, "auto"), + VPORT(ExtORPort), + V(ExtORPortCookieAuthFile, STRING, NULL), + V(ExtORPortCookieAuthFileGroupReadable, BOOL, "0"), + V(ExtraInfoStatistics, BOOL, "1"), + V(ExtendByEd25519ID, AUTOBOOL, "auto"), + V(FallbackDir, LINELIST, NULL), + + V(UseDefaultFallbackDirs, BOOL, "1"), + + OBSOLETE("FallbackNetworkstatusFile"), + V(FascistFirewall, BOOL, "0"), + V(FirewallPorts, CSV, ""), + OBSOLETE("FastFirstHopPK"), + V(FetchDirInfoEarly, BOOL, "0"), + V(FetchDirInfoExtraEarly, BOOL, "0"), + V(FetchServerDescriptors, BOOL, "1"), + V(FetchHidServDescriptors, BOOL, "1"), + V(FetchUselessDescriptors, BOOL, "0"), + OBSOLETE("FetchV2Networkstatus"), + V(GeoIPExcludeUnknown, AUTOBOOL, "auto"), +#ifdef _WIN32 + V(GeoIPFile, FILENAME, ""), + V(GeoIPv6File, FILENAME, ""), +#else + V(GeoIPFile, FILENAME, + SHARE_DATADIR PATH_SEPARATOR "tor" PATH_SEPARATOR "geoip"), + V(GeoIPv6File, FILENAME, + SHARE_DATADIR PATH_SEPARATOR "tor" PATH_SEPARATOR "geoip6"), +#endif /* defined(_WIN32) */ + OBSOLETE("Group"), + V(GuardLifetime, INTERVAL, "0 minutes"), + V(HardwareAccel, BOOL, "0"), + V(HeartbeatPeriod, INTERVAL, "6 hours"), + V(MainloopStats, BOOL, "0"), + V(AccelName, STRING, NULL), + V(AccelDir, FILENAME, NULL), + V(HashedControlPassword, LINELIST, NULL), + OBSOLETE("HidServDirectoryV2"), + VAR("HiddenServiceDir", LINELIST_S, RendConfigLines, NULL), + VAR("HiddenServiceDirGroupReadable", LINELIST_S, RendConfigLines, NULL), + VAR("HiddenServiceOptions",LINELIST_V, RendConfigLines, NULL), + VAR("HiddenServicePort", LINELIST_S, RendConfigLines, NULL), + VAR("HiddenServiceVersion",LINELIST_S, RendConfigLines, NULL), + VAR("HiddenServiceAuthorizeClient",LINELIST_S,RendConfigLines, NULL), + VAR("HiddenServiceAllowUnknownPorts",LINELIST_S, RendConfigLines, NULL), + VAR("HiddenServiceMaxStreams",LINELIST_S, RendConfigLines, NULL), + VAR("HiddenServiceMaxStreamsCloseCircuit",LINELIST_S, RendConfigLines, NULL), + VAR("HiddenServiceNumIntroductionPoints", LINELIST_S, RendConfigLines, NULL), + VAR("HiddenServiceStatistics", BOOL, HiddenServiceStatistics_option, "1"), + V(HidServAuth, LINELIST, NULL), + OBSOLETE("CloseHSClientCircuitsImmediatelyOnTimeout"), + OBSOLETE("CloseHSServiceRendCircuitsImmediatelyOnTimeout"), + V(HiddenServiceSingleHopMode, BOOL, "0"), + V(HiddenServiceNonAnonymousMode,BOOL, "0"), + V(HTTPProxy, STRING, NULL), + V(HTTPProxyAuthenticator, STRING, NULL), + V(HTTPSProxy, STRING, NULL), + V(HTTPSProxyAuthenticator, STRING, NULL), + VPORT(HTTPTunnelPort), + V(IPv6Exit, BOOL, "0"), + VAR("ServerTransportPlugin", LINELIST, ServerTransportPlugin, NULL), + V(ServerTransportListenAddr, LINELIST, NULL), + V(ServerTransportOptions, LINELIST, NULL), + V(SigningKeyLifetime, INTERVAL, "30 days"), + V(Socks4Proxy, STRING, NULL), + V(Socks5Proxy, STRING, NULL), + V(Socks5ProxyUsername, STRING, NULL), + V(Socks5ProxyPassword, STRING, NULL), + VAR("KeyDirectory", FILENAME, KeyDirectory_option, NULL), + V(KeyDirectoryGroupReadable, BOOL, "0"), + VAR("HSLayer2Nodes", ROUTERSET, HSLayer2Nodes, NULL), + VAR("HSLayer3Nodes", ROUTERSET, HSLayer3Nodes, NULL), + V(KeepalivePeriod, INTERVAL, "5 minutes"), + V(KeepBindCapabilities, AUTOBOOL, "auto"), + VAR("Log", LINELIST, Logs, NULL), + V(LogMessageDomains, BOOL, "0"), + V(LogTimeGranularity, MSEC_INTERVAL, "1 second"), + V(TruncateLogFile, BOOL, "0"), + V(SyslogIdentityTag, STRING, NULL), + V(AndroidIdentityTag, STRING, NULL), + V(LongLivedPorts, CSV, + "21,22,706,1863,5050,5190,5222,5223,6523,6667,6697,8300"), + VAR("MapAddress", LINELIST, AddressMap, NULL), + V(MaxAdvertisedBandwidth, MEMUNIT, "1 GB"), + V(MaxCircuitDirtiness, INTERVAL, "10 minutes"), + V(MaxClientCircuitsPending, UINT, "32"), + V(MaxConsensusAgeForDiffs, INTERVAL, "0 seconds"), + VAR("MaxMemInQueues", MEMUNIT, MaxMemInQueues_raw, "0"), + OBSOLETE("MaxOnionsPending"), + V(MaxOnionQueueDelay, MSEC_INTERVAL, "1750 msec"), + V(MaxUnparseableDescSizeToLog, MEMUNIT, "10 MB"), + V(MinMeasuredBWsForAuthToIgnoreAdvertised, INT, "500"), + VAR("MyFamily", LINELIST, MyFamily_lines, NULL), + V(NewCircuitPeriod, INTERVAL, "30 seconds"), + OBSOLETE("NamingAuthoritativeDirectory"), + OBSOLETE("NATDListenAddress"), + VPORT(NATDPort), + V(Nickname, STRING, NULL), + OBSOLETE("PredictedPortsRelevanceTime"), + OBSOLETE("WarnUnsafeSocks"), + VAR("NodeFamily", LINELIST, NodeFamilies, NULL), + V(NoExec, BOOL, "0"), + V(NumCPUs, UINT, "0"), + V(NumDirectoryGuards, UINT, "0"), + V(NumEntryGuards, UINT, "0"), + V(NumPrimaryGuards, UINT, "0"), + V(OfflineMasterKey, BOOL, "0"), + OBSOLETE("ORListenAddress"), + VPORT(ORPort), + V(OutboundBindAddress, LINELIST, NULL), + V(OutboundBindAddressOR, LINELIST, NULL), + V(OutboundBindAddressExit, LINELIST, NULL), + + OBSOLETE("PathBiasDisableRate"), + V(PathBiasCircThreshold, INT, "-1"), + V(PathBiasNoticeRate, DOUBLE, "-1"), + V(PathBiasWarnRate, DOUBLE, "-1"), + V(PathBiasExtremeRate, DOUBLE, "-1"), + V(PathBiasScaleThreshold, INT, "-1"), + OBSOLETE("PathBiasScaleFactor"), + OBSOLETE("PathBiasMultFactor"), + V(PathBiasDropGuards, AUTOBOOL, "0"), + OBSOLETE("PathBiasUseCloseCounts"), + + V(PathBiasUseThreshold, INT, "-1"), + V(PathBiasNoticeUseRate, DOUBLE, "-1"), + V(PathBiasExtremeUseRate, DOUBLE, "-1"), + V(PathBiasScaleUseThreshold, INT, "-1"), + + V(PathsNeededToBuildCircuits, DOUBLE, "-1"), + V(PerConnBWBurst, MEMUNIT, "0"), + V(PerConnBWRate, MEMUNIT, "0"), + V(PidFile, STRING, NULL), + V(TestingTorNetwork, BOOL, "0"), + V(TestingMinExitFlagThreshold, MEMUNIT, "0"), + V(TestingMinFastFlagThreshold, MEMUNIT, "0"), + + V(TestingLinkCertLifetime, INTERVAL, "2 days"), + V(TestingAuthKeyLifetime, INTERVAL, "2 days"), + V(TestingLinkKeySlop, INTERVAL, "3 hours"), + V(TestingAuthKeySlop, INTERVAL, "3 hours"), + V(TestingSigningKeySlop, INTERVAL, "1 day"), + + V(OptimisticData, AUTOBOOL, "auto"), + OBSOLETE("PortForwarding"), + OBSOLETE("PortForwardingHelper"), + OBSOLETE("PreferTunneledDirConns"), + V(ProtocolWarnings, BOOL, "0"), + V(PublishServerDescriptor, CSV, "1"), + V(PublishHidServDescriptors, BOOL, "1"), + V(ReachableAddresses, LINELIST, NULL), + V(ReachableDirAddresses, LINELIST, NULL), + V(ReachableORAddresses, LINELIST, NULL), + V(RecommendedVersions, LINELIST, NULL), + V(RecommendedClientVersions, LINELIST, NULL), + V(RecommendedServerVersions, LINELIST, NULL), + V(RecommendedPackages, LINELIST, NULL), + V(ReducedConnectionPadding, BOOL, "0"), + V(ConnectionPadding, AUTOBOOL, "auto"), + V(RefuseUnknownExits, AUTOBOOL, "auto"), + V(RejectPlaintextPorts, CSV, ""), + V(RelayBandwidthBurst, MEMUNIT, "0"), + V(RelayBandwidthRate, MEMUNIT, "0"), + V(RendPostPeriod, INTERVAL, "1 hour"), + V(RephistTrackTime, INTERVAL, "24 hours"), + V(RunAsDaemon, BOOL, "0"), + V(ReducedExitPolicy, BOOL, "0"), + OBSOLETE("RunTesting"), // currently unused + V(Sandbox, BOOL, "0"), + V(SafeLogging, STRING, "1"), + V(SafeSocks, BOOL, "0"), + V(ServerDNSAllowBrokenConfig, BOOL, "1"), + V(ServerDNSAllowNonRFC953Hostnames, BOOL,"0"), + V(ServerDNSDetectHijacking, BOOL, "1"), + V(ServerDNSRandomizeCase, BOOL, "1"), + V(ServerDNSResolvConfFile, STRING, NULL), + V(ServerDNSSearchDomains, BOOL, "0"), + V(ServerDNSTestAddresses, CSV, + "www.google.com,www.mit.edu,www.yahoo.com,www.slashdot.org"), + OBSOLETE("SchedulerLowWaterMark__"), + OBSOLETE("SchedulerHighWaterMark__"), + OBSOLETE("SchedulerMaxFlushCells__"), + V(KISTSchedRunInterval, MSEC_INTERVAL, "0 msec"), + V(KISTSockBufSizeFactor, DOUBLE, "1.0"), + V(Schedulers, CSV, "KIST,KISTLite,Vanilla"), + V(ShutdownWaitLength, INTERVAL, "30 seconds"), + OBSOLETE("SocksListenAddress"), + V(SocksPolicy, LINELIST, NULL), + VPORT(SocksPort), + V(SocksTimeout, INTERVAL, "2 minutes"), + V(SSLKeyLifetime, INTERVAL, "0"), + OBSOLETE("StrictEntryNodes"), + OBSOLETE("StrictExitNodes"), + V(StrictNodes, BOOL, "0"), + OBSOLETE("Support022HiddenServices"), + V(TestSocks, BOOL, "0"), + V(TokenBucketRefillInterval, MSEC_INTERVAL, "100 msec"), + V(Tor2webMode, BOOL, "0"), + V(Tor2webRendezvousPoints, ROUTERSET, NULL), + OBSOLETE("TLSECGroup"), + V(TrackHostExits, CSV, NULL), + V(TrackHostExitsExpire, INTERVAL, "30 minutes"), + OBSOLETE("TransListenAddress"), + VPORT(TransPort), + V(TransProxyType, STRING, "default"), + OBSOLETE("TunnelDirConns"), + V(UpdateBridgesFromAuthority, BOOL, "0"), + V(UseBridges, BOOL, "0"), + VAR("UseEntryGuards", BOOL, UseEntryGuards_option, "1"), + OBSOLETE("UseEntryGuardsAsDirGuards"), + V(UseGuardFraction, AUTOBOOL, "auto"), + V(UseMicrodescriptors, AUTOBOOL, "auto"), + OBSOLETE("UseNTorHandshake"), + V(User, STRING, NULL), + OBSOLETE("UserspaceIOCPBuffers"), + V(AuthDirSharedRandomness, BOOL, "1"), + V(AuthDirTestEd25519LinkKeys, BOOL, "1"), + OBSOLETE("V1AuthoritativeDirectory"), + OBSOLETE("V2AuthoritativeDirectory"), + VAR("V3AuthoritativeDirectory",BOOL, V3AuthoritativeDir, "0"), + V(TestingV3AuthInitialVotingInterval, INTERVAL, "30 minutes"), + V(TestingV3AuthInitialVoteDelay, INTERVAL, "5 minutes"), + V(TestingV3AuthInitialDistDelay, INTERVAL, "5 minutes"), + V(TestingV3AuthVotingStartOffset, INTERVAL, "0"), + V(V3AuthVotingInterval, INTERVAL, "1 hour"), + V(V3AuthVoteDelay, INTERVAL, "5 minutes"), + V(V3AuthDistDelay, INTERVAL, "5 minutes"), + V(V3AuthNIntervalsValid, UINT, "3"), + V(V3AuthUseLegacyKey, BOOL, "0"), + V(V3BandwidthsFile, FILENAME, NULL), + V(GuardfractionFile, FILENAME, NULL), + VAR("VersioningAuthoritativeDirectory",BOOL,VersioningAuthoritativeDir, "0"), + OBSOLETE("VoteOnHidServDirectoriesV2"), + V(VirtualAddrNetworkIPv4, STRING, "127.192.0.0/10"), + V(VirtualAddrNetworkIPv6, STRING, "[FE80::]/10"), + V(WarnPlaintextPorts, CSV, "23,109,110,143"), + OBSOLETE("UseFilteringSSLBufferevents"), + OBSOLETE("__UseFilteringSSLBufferevents"), + VAR("__ReloadTorrcOnSIGHUP", BOOL, ReloadTorrcOnSIGHUP, "1"), + VAR("__AllDirActionsPrivate", BOOL, AllDirActionsPrivate, "0"), + VAR("__DisablePredictedCircuits",BOOL,DisablePredictedCircuits, "0"), + VAR("__DisableSignalHandlers", BOOL, DisableSignalHandlers, "0"), + VAR("__LeaveStreamsUnattached",BOOL, LeaveStreamsUnattached, "0"), + VAR("__HashedControlSessionPassword", LINELIST, HashedControlSessionPassword, + NULL), + VAR("__OwningControllerProcess",STRING,OwningControllerProcess, NULL), + VAR("__OwningControllerFD",INT,OwningControllerFD, "-1"), + V(MinUptimeHidServDirectoryV2, INTERVAL, "96 hours"), + V(TestingServerDownloadInitialDelay, CSV_INTERVAL, "0"), + V(TestingClientDownloadInitialDelay, CSV_INTERVAL, "0"), + V(TestingServerConsensusDownloadInitialDelay, CSV_INTERVAL, "0"), + V(TestingClientConsensusDownloadInitialDelay, CSV_INTERVAL, "0"), + /* With the ClientBootstrapConsensus*Download* below: + * Clients with only authorities will try: + * - at least 3 authorities over 10 seconds, then exponentially backoff, + * with the next attempt 3-21 seconds later, + * Clients with authorities and fallbacks will try: + * - at least 2 authorities and 4 fallbacks over 21 seconds, then + * exponentially backoff, with the next attempts 4-33 seconds later, + * Clients will also retry when an application request arrives. + * After a number of failed requests, clients retry every 3 days + 1 hour. + * + * Clients used to try 2 authorities over 10 seconds, then wait for + * 60 minutes or an application request. + * + * When clients have authorities and fallbacks available, they use these + * schedules: (we stagger the times to avoid thundering herds) */ + V(ClientBootstrapConsensusAuthorityDownloadInitialDelay, CSV_INTERVAL, "6"), + V(ClientBootstrapConsensusFallbackDownloadInitialDelay, CSV_INTERVAL, "0"), + /* When clients only have authorities available, they use this schedule: */ + V(ClientBootstrapConsensusAuthorityOnlyDownloadInitialDelay, CSV_INTERVAL, + "0"), + /* We don't want to overwhelm slow networks (or mirrors whose replies are + * blocked), but we also don't want to fail if only some mirrors are + * blackholed. Clients will try 3 directories simultaneously. + * (Relays never use simultaneous connections.) */ + V(ClientBootstrapConsensusMaxInProgressTries, UINT, "3"), + /* When a client has any running bridges, check each bridge occasionally, + * whether or not that bridge is actually up. */ + V(TestingBridgeDownloadInitialDelay, CSV_INTERVAL,"10800"), + /* When a client is just starting, or has no running bridges, check each + * bridge a few times quickly, and then try again later. These schedules + * are much longer than the other schedules, because we try each and every + * configured bridge with this schedule. */ + V(TestingBridgeBootstrapDownloadInitialDelay, CSV_INTERVAL, "0"), + V(TestingClientMaxIntervalWithoutRequest, INTERVAL, "10 minutes"), + V(TestingDirConnectionMaxStall, INTERVAL, "5 minutes"), + OBSOLETE("TestingConsensusMaxDownloadTries"), + OBSOLETE("ClientBootstrapConsensusMaxDownloadTries"), + OBSOLETE("ClientBootstrapConsensusAuthorityOnlyMaxDownloadTries"), + OBSOLETE("TestingDescriptorMaxDownloadTries"), + OBSOLETE("TestingMicrodescMaxDownloadTries"), + OBSOLETE("TestingCertMaxDownloadTries"), + V(TestingDirAuthVoteExit, ROUTERSET, NULL), + V(TestingDirAuthVoteExitIsStrict, BOOL, "0"), + V(TestingDirAuthVoteGuard, ROUTERSET, NULL), + V(TestingDirAuthVoteGuardIsStrict, BOOL, "0"), + V(TestingDirAuthVoteHSDir, ROUTERSET, NULL), + V(TestingDirAuthVoteHSDirIsStrict, BOOL, "0"), + VAR("___UsingTestNetworkDefaults", BOOL, UsingTestNetworkDefaults_, "0"), + + END_OF_CONFIG_VARS +}; + +/** Override default values with these if the user sets the TestingTorNetwork + * option. */ +static const config_var_t testing_tor_network_defaults[] = { + V(DirAllowPrivateAddresses, BOOL, "1"), + V(EnforceDistinctSubnets, BOOL, "0"), + V(AssumeReachable, BOOL, "1"), + V(AuthDirMaxServersPerAddr, UINT, "0"), + V(ClientBootstrapConsensusAuthorityDownloadInitialDelay, CSV_INTERVAL, "0"), + V(ClientBootstrapConsensusFallbackDownloadInitialDelay, CSV_INTERVAL, "0"), + V(ClientBootstrapConsensusAuthorityOnlyDownloadInitialDelay, CSV_INTERVAL, + "0"), + V(ClientDNSRejectInternalAddresses, BOOL,"0"), + V(ClientRejectInternalAddresses, BOOL, "0"), + V(CountPrivateBandwidth, BOOL, "1"), + V(ExitPolicyRejectPrivate, BOOL, "0"), + V(ExtendAllowPrivateAddresses, BOOL, "1"), + V(V3AuthVotingInterval, INTERVAL, "5 minutes"), + V(V3AuthVoteDelay, INTERVAL, "20 seconds"), + V(V3AuthDistDelay, INTERVAL, "20 seconds"), + V(TestingV3AuthInitialVotingInterval, INTERVAL, "150 seconds"), + V(TestingV3AuthInitialVoteDelay, INTERVAL, "20 seconds"), + V(TestingV3AuthInitialDistDelay, INTERVAL, "20 seconds"), + V(TestingAuthDirTimeToLearnReachability, INTERVAL, "0 minutes"), + V(TestingEstimatedDescriptorPropagationTime, INTERVAL, "0 minutes"), + V(MinUptimeHidServDirectoryV2, INTERVAL, "0 minutes"), + V(TestingServerDownloadInitialDelay, CSV_INTERVAL, "0"), + V(TestingClientDownloadInitialDelay, CSV_INTERVAL, "0"), + V(TestingServerConsensusDownloadInitialDelay, CSV_INTERVAL, "0"), + V(TestingClientConsensusDownloadInitialDelay, CSV_INTERVAL, "0"), + V(TestingBridgeDownloadInitialDelay, CSV_INTERVAL, "10"), + V(TestingBridgeBootstrapDownloadInitialDelay, CSV_INTERVAL, "0"), + V(TestingClientMaxIntervalWithoutRequest, INTERVAL, "5 seconds"), + V(TestingDirConnectionMaxStall, INTERVAL, "30 seconds"), + V(TestingEnableConnBwEvent, BOOL, "1"), + V(TestingEnableCellStatsEvent, BOOL, "1"), + VAR("___UsingTestNetworkDefaults", BOOL, UsingTestNetworkDefaults_, "1"), + V(RendPostPeriod, INTERVAL, "2 minutes"), + + END_OF_CONFIG_VARS +}; + +#undef VAR +#undef V +#undef OBSOLETE + +static const config_deprecation_t option_deprecation_notes_[] = { + /* Deprecated since 0.3.2.0-alpha. */ + { "HTTPProxy", "It only applies to direct unencrypted HTTP connections " + "to your directory server, which your Tor probably wasn't using." }, + { "HTTPProxyAuthenticator", "HTTPProxy is deprecated in favor of HTTPSProxy " + "which should be used with HTTPSProxyAuthenticator." }, + /* End of options deprecated since 0.3.2.1-alpha */ + + /* Options deprecated since 0.3.2.2-alpha */ + { "ReachableDirAddresses", "It has no effect on relays, and has had no " + "effect on clients since 0.2.8." }, + { "ClientPreferIPv6DirPort", "It has no effect on relays, and has had no " + "effect on clients since 0.2.8." }, + /* End of options deprecated since 0.3.2.2-alpha. */ + + { NULL, NULL } +}; + +#ifdef _WIN32 +static char *get_windows_conf_root(void); +#endif +static int options_act_reversible(const or_options_t *old_options, char **msg); +static int options_transition_allowed(const or_options_t *old, + const or_options_t *new, + char **msg); +static int options_transition_affects_workers( + const or_options_t *old_options, const or_options_t *new_options); +static int options_transition_affects_descriptor( + const or_options_t *old_options, const or_options_t *new_options); +static int options_transition_affects_dirauth_timing( + const or_options_t *old_options, const or_options_t *new_options); +static int normalize_nickname_list(config_line_t **normalized_out, + const config_line_t *lst, const char *name, + char **msg); +static char *get_bindaddr_from_transport_listen_line(const char *line, + const char *transport); +static int parse_ports(or_options_t *options, int validate_only, + char **msg_out, int *n_ports_out, + int *world_writable_control_socket); +static int check_server_ports(const smartlist_t *ports, + const or_options_t *options, + int *num_low_ports_out); +static int validate_data_directories(or_options_t *options); +static int write_configuration_file(const char *fname, + const or_options_t *options); +static int options_init_logs(const or_options_t *old_options, + or_options_t *options, int validate_only); + +static void init_libevent(const or_options_t *options); +static int opt_streq(const char *s1, const char *s2); +static int parse_outbound_addresses(or_options_t *options, int validate_only, + char **msg); +static void config_maybe_load_geoip_files_(const or_options_t *options, + const or_options_t *old_options); +static int options_validate_cb(void *old_options, void *options, + void *default_options, + int from_setconf, char **msg); +static void cleanup_protocol_warning_severity_level(void); +static void set_protocol_warning_severity_level(int warning_severity); + +/** Magic value for or_options_t. */ +#define OR_OPTIONS_MAGIC 9090909 + +/** Configuration format for or_options_t. */ +STATIC config_format_t options_format = { + sizeof(or_options_t), + OR_OPTIONS_MAGIC, + offsetof(or_options_t, magic_), + option_abbrevs_, + option_deprecation_notes_, + option_vars_, + options_validate_cb, + NULL +}; + +/* + * Functions to read and write the global options pointer. + */ + +/** Command-line and config-file options. */ +static or_options_t *global_options = NULL; +/** The fallback options_t object; this is where we look for options not + * in torrc before we fall back to Tor's defaults. */ +static or_options_t *global_default_options = NULL; +/** Name of most recently read torrc file. */ +static char *torrc_fname = NULL; +/** Name of the most recently read torrc-defaults file.*/ +static char *torrc_defaults_fname = NULL; +/** Configuration options set by command line. */ +static config_line_t *global_cmdline_options = NULL; +/** Non-configuration options set by the command line */ +static config_line_t *global_cmdline_only_options = NULL; +/** Boolean: Have we parsed the command line? */ +static int have_parsed_cmdline = 0; +/** Contents of most recently read DirPortFrontPage file. */ +static char *global_dirfrontpagecontents = NULL; +/** List of port_cfg_t for all configured ports. */ +static smartlist_t *configured_ports = NULL; +/** True iff we're currently validating options, and any calls to + * get_options() are likely to be bugs. */ +static int in_option_validation = 0; +/* True iff we've initialized libevent */ +static int libevent_initialized = 0; + +/** Return the contents of our frontpage string, or NULL if not configured. */ +MOCK_IMPL(const char*, +get_dirportfrontpage, (void)) +{ + return global_dirfrontpagecontents; +} + +/** Returns the currently configured options. */ +MOCK_IMPL(or_options_t *, +get_options_mutable, (void)) +{ + tor_assert(global_options); + tor_assert_nonfatal(! in_option_validation); + return global_options; +} + +/** Returns the currently configured options */ +MOCK_IMPL(const or_options_t *, +get_options,(void)) +{ + return get_options_mutable(); +} + +/** Change the current global options to contain new_val instead of + * their current value; take action based on the new value; free the old value + * as necessary. Returns 0 on success, -1 on failure. + */ +int +set_options(or_options_t *new_val, char **msg) +{ + int i; + smartlist_t *elements; + config_line_t *line; + or_options_t *old_options = global_options; + global_options = new_val; + /* Note that we pass the *old* options below, for comparison. It + * pulls the new options directly out of global_options. */ + if (options_act_reversible(old_options, msg)<0) { + tor_assert(*msg); + global_options = old_options; + return -1; + } + if (options_act(old_options) < 0) { /* acting on the options failed. die. */ + if (! tor_event_loop_shutdown_is_pending()) { + log_err(LD_BUG, + "Acting on config options left us in a broken state. Dying."); + tor_shutdown_event_loop_and_exit(1); + } + return -1; + } + /* Issues a CONF_CHANGED event to notify controller of the change. If Tor is + * just starting up then the old_options will be undefined. */ + if (old_options && old_options != global_options) { + elements = smartlist_new(); + for (i=0; options_format.vars[i].name; ++i) { + const config_var_t *var = &options_format.vars[i]; + const char *var_name = var->name; + if (var->type == CONFIG_TYPE_LINELIST_S || + var->type == CONFIG_TYPE_OBSOLETE) { + continue; + } + if (!config_is_same(&options_format, new_val, old_options, var_name)) { + line = config_get_assigned_option(&options_format, new_val, + var_name, 1); + + if (line) { + config_line_t *next; + for (; line; line = next) { + next = line->next; + smartlist_add(elements, line->key); + smartlist_add(elements, line->value); + tor_free(line); + } + } else { + smartlist_add_strdup(elements, options_format.vars[i].name); + smartlist_add(elements, NULL); + } + } + } + control_event_conf_changed(elements); + SMARTLIST_FOREACH(elements, char *, cp, tor_free(cp)); + smartlist_free(elements); + } + + if (old_options != global_options) { + or_options_free(old_options); + /* If we are here it means we've successfully applied the new options and + * that the global options have been changed to the new values. We'll + * check if we need to remove or add periodic events. */ + periodic_events_on_new_options(global_options); + } + + return 0; +} + +/** The version of this Tor process, as parsed. */ +static char *the_tor_version = NULL; +/** A shorter version of this Tor process's version, for export in our router + * descriptor. (Does not include the git version, if any.) */ +static char *the_short_tor_version = NULL; + +/** Return the current Tor version. */ +const char * +get_version(void) +{ + if (the_tor_version == NULL) { + if (strlen(tor_git_revision)) { + tor_asprintf(&the_tor_version, "%s (git-%s)", get_short_version(), + tor_git_revision); + } else { + the_tor_version = tor_strdup(get_short_version()); + } + } + return the_tor_version; +} + +/** Return the current Tor version, without any git tag. */ +const char * +get_short_version(void) +{ + + if (the_short_tor_version == NULL) { +#ifdef TOR_BUILD_TAG + tor_asprintf(&the_short_tor_version, "%s (%s)", VERSION, TOR_BUILD_TAG); +#else + the_short_tor_version = tor_strdup(VERSION); +#endif + } + return the_short_tor_version; +} + +/** Release additional memory allocated in options + */ +STATIC void +or_options_free_(or_options_t *options) +{ + if (!options) + return; + + routerset_free(options->ExcludeExitNodesUnion_); + if (options->NodeFamilySets) { + SMARTLIST_FOREACH(options->NodeFamilySets, routerset_t *, + rs, routerset_free(rs)); + smartlist_free(options->NodeFamilySets); + } + if (options->SchedulerTypes_) { + SMARTLIST_FOREACH(options->SchedulerTypes_, int *, i, tor_free(i)); + smartlist_free(options->SchedulerTypes_); + } + if (options->FilesOpenedByIncludes) { + SMARTLIST_FOREACH(options->FilesOpenedByIncludes, char *, f, tor_free(f)); + smartlist_free(options->FilesOpenedByIncludes); + } + tor_free(options->DataDirectory); + tor_free(options->CacheDirectory); + tor_free(options->KeyDirectory); + tor_free(options->BridgePassword_AuthDigest_); + tor_free(options->command_arg); + tor_free(options->master_key_fname); + config_free_lines(options->MyFamily); + config_free(&options_format, options); +} + +/** Release all memory and resources held by global configuration structures. + */ +void +config_free_all(void) +{ + or_options_free(global_options); + global_options = NULL; + or_options_free(global_default_options); + global_default_options = NULL; + + config_free_lines(global_cmdline_options); + global_cmdline_options = NULL; + + config_free_lines(global_cmdline_only_options); + global_cmdline_only_options = NULL; + + if (configured_ports) { + SMARTLIST_FOREACH(configured_ports, + port_cfg_t *, p, port_cfg_free(p)); + smartlist_free(configured_ports); + configured_ports = NULL; + } + + tor_free(torrc_fname); + tor_free(torrc_defaults_fname); + tor_free(global_dirfrontpagecontents); + + tor_free(the_short_tor_version); + tor_free(the_tor_version); + + cleanup_protocol_warning_severity_level(); + + have_parsed_cmdline = 0; + libevent_initialized = 0; +} + +/** Make address -- a piece of information related to our operation as + * a client -- safe to log according to the settings in options->SafeLogging, + * and return it. + * + * (We return "[scrubbed]" if SafeLogging is "1", and address otherwise.) + */ +const char * +safe_str_client(const char *address) +{ + tor_assert(address); + if (get_options()->SafeLogging_ == SAFELOG_SCRUB_ALL) + return "[scrubbed]"; + else + return address; +} + +/** Make address -- a piece of information of unspecified sensitivity + * -- safe to log according to the settings in options->SafeLogging, and + * return it. + * + * (We return "[scrubbed]" if SafeLogging is anything besides "0", and address + * otherwise.) + */ +const char * +safe_str(const char *address) +{ + tor_assert(address); + if (get_options()->SafeLogging_ != SAFELOG_SCRUB_NONE) + return "[scrubbed]"; + else + return address; +} + +/** Equivalent to escaped(safe_str_client(address)). See reentrancy note on + * escaped(): don't use this outside the main thread, or twice in the same + * log statement. */ +const char * +escaped_safe_str_client(const char *address) +{ + if (get_options()->SafeLogging_ == SAFELOG_SCRUB_ALL) + return "[scrubbed]"; + else + return escaped(address); +} + +/** Equivalent to escaped(safe_str(address)). See reentrancy note on + * escaped(): don't use this outside the main thread, or twice in the same + * log statement. */ +const char * +escaped_safe_str(const char *address) +{ + if (get_options()->SafeLogging_ != SAFELOG_SCRUB_NONE) + return "[scrubbed]"; + else + return escaped(address); +} + +/** + * The severity level that should be used for warnings of severity + * LOG_PROTOCOL_WARN. + * + * We keep this outside the options, and we use an atomic_counter_t, in case + * one thread needs to use LOG_PROTOCOL_WARN while an option transition is + * happening in the main thread. + */ +static atomic_counter_t protocol_warning_severity_level; + +/** Return the severity level that should be used for warnings of severity + * LOG_PROTOCOL_WARN. */ +int +get_protocol_warning_severity_level(void) +{ + return (int) atomic_counter_get(&protocol_warning_severity_level); +} + +/** Set the protocol warning severity level to severity. */ +static void +set_protocol_warning_severity_level(int warning_severity) +{ + atomic_counter_exchange(&protocol_warning_severity_level, + warning_severity); +} + +/** + * Initialize the log warning severity level for protocol warnings. Call + * only once at startup. + */ +void +init_protocol_warning_severity_level(void) +{ + atomic_counter_init(&protocol_warning_severity_level); + set_protocol_warning_severity_level(LOG_WARN); +} + +/** + * Tear down protocol_warning_severity_level. + */ +static void +cleanup_protocol_warning_severity_level(void) +{ + atomic_counter_destroy(&protocol_warning_severity_level); +} + +/** List of default directory authorities */ + +static const char *default_authorities[] = { +#include "auth_dirs.inc" + NULL +}; + +/** List of fallback directory authorities. The list is generated by opt-in of + * relays that meet certain stability criteria. + */ +static const char *default_fallbacks[] = { +#include "fallback_dirs.inc" + NULL +}; + +/** Add the default directory authorities directly into the trusted dir list, + * but only add them insofar as they share bits with type. + * Each authority's bits are restricted to the bits shared with type. + * If type is ALL_DIRINFO or NO_DIRINFO (zero), add all authorities. */ +STATIC void +add_default_trusted_dir_authorities(dirinfo_type_t type) +{ + int i; + for (i=0; default_authorities[i]; i++) { + if (parse_dir_authority_line(default_authorities[i], type, 0)<0) { + log_err(LD_BUG, "Couldn't parse internal DirAuthority line %s", + default_authorities[i]); + } + } +} + +/** Add the default fallback directory servers into the fallback directory + * server list. */ +MOCK_IMPL(void, +add_default_fallback_dir_servers,(void)) +{ + int i; + for (i=0; default_fallbacks[i]; i++) { + if (parse_dir_fallback_line(default_fallbacks[i], 0)<0) { + log_err(LD_BUG, "Couldn't parse internal FallbackDir line %s", + default_fallbacks[i]); + } + } +} + +/** Look at all the config options for using alternate directory + * authorities, and make sure none of them are broken. Also, warn the + * user if we changed any dangerous ones. + */ +static int +validate_dir_servers(or_options_t *options, or_options_t *old_options) +{ + config_line_t *cl; + + if (options->DirAuthorities && + (options->AlternateDirAuthority || options->AlternateBridgeAuthority)) { + log_warn(LD_CONFIG, + "You cannot set both DirAuthority and Alternate*Authority."); + return -1; + } + + /* do we want to complain to the user about being partitionable? */ + if ((options->DirAuthorities && + (!old_options || + !config_lines_eq(options->DirAuthorities, + old_options->DirAuthorities))) || + (options->AlternateDirAuthority && + (!old_options || + !config_lines_eq(options->AlternateDirAuthority, + old_options->AlternateDirAuthority)))) { + log_warn(LD_CONFIG, + "You have used DirAuthority or AlternateDirAuthority to " + "specify alternate directory authorities in " + "your configuration. This is potentially dangerous: it can " + "make you look different from all other Tor users, and hurt " + "your anonymity. Even if you've specified the same " + "authorities as Tor uses by default, the defaults could " + "change in the future. Be sure you know what you're doing."); + } + + /* Now go through the four ways you can configure an alternate + * set of directory authorities, and make sure none are broken. */ + for (cl = options->DirAuthorities; cl; cl = cl->next) + if (parse_dir_authority_line(cl->value, NO_DIRINFO, 1)<0) + return -1; + for (cl = options->AlternateBridgeAuthority; cl; cl = cl->next) + if (parse_dir_authority_line(cl->value, NO_DIRINFO, 1)<0) + return -1; + for (cl = options->AlternateDirAuthority; cl; cl = cl->next) + if (parse_dir_authority_line(cl->value, NO_DIRINFO, 1)<0) + return -1; + for (cl = options->FallbackDir; cl; cl = cl->next) + if (parse_dir_fallback_line(cl->value, 1)<0) + return -1; + return 0; +} + +/** Look at all the config options and assign new dir authorities + * as appropriate. + */ +int +consider_adding_dir_servers(const or_options_t *options, + const or_options_t *old_options) +{ + config_line_t *cl; + int need_to_update = + !smartlist_len(router_get_trusted_dir_servers()) || + !smartlist_len(router_get_fallback_dir_servers()) || !old_options || + !config_lines_eq(options->DirAuthorities, old_options->DirAuthorities) || + !config_lines_eq(options->FallbackDir, old_options->FallbackDir) || + (options->UseDefaultFallbackDirs != old_options->UseDefaultFallbackDirs) || + !config_lines_eq(options->AlternateBridgeAuthority, + old_options->AlternateBridgeAuthority) || + !config_lines_eq(options->AlternateDirAuthority, + old_options->AlternateDirAuthority); + + if (!need_to_update) + return 0; /* all done */ + + /* "You cannot set both DirAuthority and Alternate*Authority." + * Checking that this restriction holds allows us to simplify + * the unit tests. */ + tor_assert(!(options->DirAuthorities && + (options->AlternateDirAuthority + || options->AlternateBridgeAuthority))); + + /* Start from a clean slate. */ + clear_dir_servers(); + + if (!options->DirAuthorities) { + /* then we may want some of the defaults */ + dirinfo_type_t type = NO_DIRINFO; + if (!options->AlternateBridgeAuthority) { + type |= BRIDGE_DIRINFO; + } + if (!options->AlternateDirAuthority) { + type |= V3_DIRINFO | EXTRAINFO_DIRINFO | MICRODESC_DIRINFO; + /* Only add the default fallback directories when the DirAuthorities, + * AlternateDirAuthority, and FallbackDir directory config options + * are set to their defaults, and when UseDefaultFallbackDirs is 1. */ + if (!options->FallbackDir && options->UseDefaultFallbackDirs) { + add_default_fallback_dir_servers(); + } + } + /* if type == NO_DIRINFO, we don't want to add any of the + * default authorities, because we've replaced them all */ + if (type != NO_DIRINFO) + add_default_trusted_dir_authorities(type); + } + + for (cl = options->DirAuthorities; cl; cl = cl->next) + if (parse_dir_authority_line(cl->value, NO_DIRINFO, 0)<0) + return -1; + for (cl = options->AlternateBridgeAuthority; cl; cl = cl->next) + if (parse_dir_authority_line(cl->value, NO_DIRINFO, 0)<0) + return -1; + for (cl = options->AlternateDirAuthority; cl; cl = cl->next) + if (parse_dir_authority_line(cl->value, NO_DIRINFO, 0)<0) + return -1; + for (cl = options->FallbackDir; cl; cl = cl->next) + if (parse_dir_fallback_line(cl->value, 0)<0) + return -1; + return 0; +} + +/** + * Make sure that directory exists, with appropriate ownership and + * permissions (as modified by group_readable). If create, + * create the directory if it is missing. Return 0 on success. + * On failure, return -1 and set *msg_out. + */ +static int +check_and_create_data_directory(int create, + const char *directory, + int group_readable, + const char *owner, + char **msg_out) +{ + cpd_check_t cpd_opts = create ? CPD_CREATE : CPD_CHECK; + if (group_readable) + cpd_opts |= CPD_GROUP_READ; + if (check_private_dir(directory, + cpd_opts, + owner) < 0) { + tor_asprintf(msg_out, + "Couldn't %s private data directory \"%s\"", + create ? "create" : "access", + directory); + return -1; + } + +#ifndef _WIN32 + if (group_readable) { + /* Only new dirs created get new opts, also enforce group read. */ + if (chmod(directory, 0750)) { + log_warn(LD_FS,"Unable to make %s group-readable: %s", + directory, strerror(errno)); + } + } +#endif /* !defined(_WIN32) */ + + return 0; +} + +/** + * Ensure that our keys directory exists, with appropriate permissions. + * Return 0 on success, -1 on failure. + */ +int +create_keys_directory(const or_options_t *options) +{ + /* Make sure DataDirectory exists, and is private. */ + cpd_check_t cpd_opts = CPD_CREATE; + if (options->DataDirectoryGroupReadable) + cpd_opts |= CPD_GROUP_READ; + if (check_private_dir(options->DataDirectory, cpd_opts, options->User)) { + log_err(LD_OR, "Can't create/check datadirectory %s", + options->DataDirectory); + return -1; + } + + /* Check the key directory. */ + if (check_private_dir(options->KeyDirectory, CPD_CREATE, options->User)) { + return -1; + } + return 0; +} + +/* Helps determine flags to pass to switch_id. */ +static int have_low_ports = -1; + +/** Fetch the active option list, and take actions based on it. All of the + * things we do should survive being done repeatedly. If present, + * old_options contains the previous value of the options. + * + * Return 0 if all goes well, return -1 if things went badly. + */ +static int +options_act_reversible(const or_options_t *old_options, char **msg) +{ + smartlist_t *new_listeners = smartlist_new(); + smartlist_t *replaced_listeners = smartlist_new(); + or_options_t *options = get_options_mutable(); + int running_tor = options->command == CMD_RUN_TOR; + int set_conn_limit = 0; + int r = -1; + int logs_marked = 0, logs_initialized = 0; + int old_min_log_level = get_min_log_level(); + + /* Daemonize _first_, since we only want to open most of this stuff in + * the subprocess. Libevent bases can't be reliably inherited across + * processes. */ + if (running_tor && options->RunAsDaemon) { + /* No need to roll back, since you can't change the value. */ + start_daemon(); + } + +#ifdef HAVE_SYSTEMD + /* Our PID may have changed, inform supervisor */ + sd_notifyf(0, "MAINPID=%ld\n", (long int)getpid()); +#endif + +#ifndef HAVE_SYS_UN_H + if (options->ControlSocket || options->ControlSocketsGroupWritable) { + *msg = tor_strdup("Unix domain sockets (ControlSocket) not supported " + "on this OS/with this build."); + goto rollback; + } +#else /* !(!defined(HAVE_SYS_UN_H)) */ + if (options->ControlSocketsGroupWritable && !options->ControlSocket) { + *msg = tor_strdup("Setting ControlSocketGroupWritable without setting" + "a ControlSocket makes no sense."); + goto rollback; + } +#endif /* !defined(HAVE_SYS_UN_H) */ + + if (running_tor) { + int n_ports=0; + /* We need to set the connection limit before we can open the listeners. */ + if (! sandbox_is_active()) { + if (set_max_file_descriptors((unsigned)options->ConnLimit, + &options->ConnLimit_) < 0) { + *msg = tor_strdup("Problem with ConnLimit value. " + "See logs for details."); + goto rollback; + } + set_conn_limit = 1; + } else { + tor_assert(old_options); + options->ConnLimit_ = old_options->ConnLimit_; + } + + /* Set up libevent. (We need to do this before we can register the + * listeners as listeners.) */ + if (running_tor && !libevent_initialized) { + init_libevent(options); + libevent_initialized = 1; + + /* This has to come up after libevent is initialized. */ + control_initialize_event_queue(); + + /* + * Initialize the scheduler - this has to come after + * options_init_from_torrc() sets up libevent - why yes, that seems + * completely sensible to hide the libevent setup in the option parsing + * code! It also needs to happen before init_keys(), so it needs to + * happen here too. How yucky. */ + scheduler_init(); + } + + /* Adjust the port configuration so we can launch listeners. */ + if (parse_ports(options, 0, msg, &n_ports, NULL)) { + if (!*msg) + *msg = tor_strdup("Unexpected problem parsing port config"); + goto rollback; + } + + /* Set the hibernation state appropriately.*/ + consider_hibernation(time(NULL)); + + /* Launch the listeners. (We do this before we setuid, so we can bind to + * ports under 1024.) We don't want to rebind if we're hibernating or + * shutting down. If networking is disabled, this will close all but the + * control listeners, but disable those. */ + if (!we_are_hibernating()) { + if (retry_all_listeners(replaced_listeners, new_listeners, + options->DisableNetwork) < 0) { + *msg = tor_strdup("Failed to bind one of the listener ports."); + goto rollback; + } + } + if (options->DisableNetwork) { + /* Aggressively close non-controller stuff, NOW */ + log_notice(LD_NET, "DisableNetwork is set. Tor will not make or accept " + "non-control network connections. Shutting down all existing " + "connections."); + connection_mark_all_noncontrol_connections(); + /* We can't complete circuits until the network is re-enabled. */ + note_that_we_maybe_cant_complete_circuits(); + } + } + +#if defined(HAVE_NET_IF_H) && defined(HAVE_NET_PFVAR_H) + /* Open /dev/pf before dropping privileges. */ + if (options->TransPort_set && + options->TransProxyType_parsed == TPT_DEFAULT) { + if (get_pf_socket() < 0) { + *msg = tor_strdup("Unable to open /dev/pf for transparent proxy."); + goto rollback; + } + } +#endif /* defined(HAVE_NET_IF_H) && defined(HAVE_NET_PFVAR_H) */ + + /* Attempt to lock all current and future memory with mlockall() only once */ + if (options->DisableAllSwap) { + if (tor_mlockall() == -1) { + *msg = tor_strdup("DisableAllSwap failure. Do you have proper " + "permissions?"); + goto done; + } + } + + /* Setuid/setgid as appropriate */ + if (options->User) { + tor_assert(have_low_ports != -1); + unsigned switch_id_flags = 0; + if (options->KeepBindCapabilities == 1) { + switch_id_flags |= SWITCH_ID_KEEP_BINDLOW; + switch_id_flags |= SWITCH_ID_WARN_IF_NO_CAPS; + } + if (options->KeepBindCapabilities == -1 && have_low_ports) { + switch_id_flags |= SWITCH_ID_KEEP_BINDLOW; + } + if (switch_id(options->User, switch_id_flags) != 0) { + /* No need to roll back, since you can't change the value. */ + *msg = tor_strdup("Problem with User value. See logs for details."); + goto done; + } + } + + /* Ensure data directory is private; create if possible. */ + /* It's okay to do this in "options_act_reversible()" even though it isn't + * actually reversible, since you can't change the DataDirectory while + * Tor is running. */ + if (check_and_create_data_directory(running_tor /* create */, + options->DataDirectory, + options->DataDirectoryGroupReadable, + options->User, + msg) < 0) { + goto done; + } + if (check_and_create_data_directory(running_tor /* create */, + options->KeyDirectory, + options->KeyDirectoryGroupReadable, + options->User, + msg) < 0) { + goto done; + } + if (check_and_create_data_directory(running_tor /* create */, + options->CacheDirectory, + options->CacheDirectoryGroupReadable, + options->User, + msg) < 0) { + goto done; + } + + /* Bail out at this point if we're not going to be a client or server: + * we don't run Tor itself. */ + if (!running_tor) + goto commit; + + mark_logs_temp(); /* Close current logs once new logs are open. */ + logs_marked = 1; + /* Configure the tor_log(s) */ + if (options_init_logs(old_options, options, 0)<0) { + *msg = tor_strdup("Failed to init Log options. See logs for details."); + goto rollback; + } + logs_initialized = 1; + + commit: + r = 0; + if (logs_marked) { + log_severity_list_t *severity = + tor_malloc_zero(sizeof(log_severity_list_t)); + close_temp_logs(); + add_callback_log(severity, control_event_logmsg); + logs_set_pending_callback_callback(control_event_logmsg_pending); + control_adjust_event_log_severity(); + tor_free(severity); + tor_log_update_sigsafe_err_fds(); + } + if (logs_initialized) { + flush_log_messages_from_startup(); + } + + { + const char *badness = NULL; + int bad_safelog = 0, bad_severity = 0, new_badness = 0; + if (options->SafeLogging_ != SAFELOG_SCRUB_ALL) { + bad_safelog = 1; + if (!old_options || old_options->SafeLogging_ != options->SafeLogging_) + new_badness = 1; + } + if (get_min_log_level() >= LOG_INFO) { + bad_severity = 1; + if (get_min_log_level() != old_min_log_level) + new_badness = 1; + } + if (bad_safelog && bad_severity) + badness = "you disabled SafeLogging, and " + "you're logging more than \"notice\""; + else if (bad_safelog) + badness = "you disabled SafeLogging"; + else + badness = "you're logging more than \"notice\""; + if (new_badness) + log_warn(LD_GENERAL, "Your log may contain sensitive information - %s. " + "Don't log unless it serves an important reason. " + "Overwrite the log afterwards.", badness); + } + + SMARTLIST_FOREACH(replaced_listeners, connection_t *, conn, + { + int marked = conn->marked_for_close; + log_notice(LD_NET, "Closing old %s on %s:%d", + conn_type_to_string(conn->type), conn->address, conn->port); + connection_close_immediate(conn); + if (!marked) { + connection_mark_for_close(conn); + } + }); + + if (set_conn_limit) { + /* + * If we adjusted the conn limit, recompute the OOS threshold too + * + * How many possible sockets to keep in reserve? If we have lots of + * possible sockets, keep this below a limit and set ConnLimit_high_thresh + * very close to ConnLimit_, but if ConnLimit_ is low, shrink it in + * proportion. + * + * Somewhat arbitrarily, set socks_in_reserve to 5% of ConnLimit_, but + * cap it at 64. + */ + int socks_in_reserve = options->ConnLimit_ / 20; + if (socks_in_reserve > 64) socks_in_reserve = 64; + + options->ConnLimit_high_thresh = options->ConnLimit_ - socks_in_reserve; + options->ConnLimit_low_thresh = (options->ConnLimit_ / 4) * 3; + log_info(LD_GENERAL, + "Recomputed OOS thresholds: ConnLimit %d, ConnLimit_ %d, " + "ConnLimit_high_thresh %d, ConnLimit_low_thresh %d", + options->ConnLimit, options->ConnLimit_, + options->ConnLimit_high_thresh, + options->ConnLimit_low_thresh); + + /* Give the OOS handler a chance with the new thresholds */ + connection_check_oos(get_n_open_sockets(), 0); + } + + goto done; + + rollback: + r = -1; + tor_assert(*msg); + + if (logs_marked) { + rollback_log_changes(); + control_adjust_event_log_severity(); + } + + if (set_conn_limit && old_options) + set_max_file_descriptors((unsigned)old_options->ConnLimit, + &options->ConnLimit_); + + SMARTLIST_FOREACH(new_listeners, connection_t *, conn, + { + log_notice(LD_NET, "Closing partially-constructed %s on %s:%d", + conn_type_to_string(conn->type), conn->address, conn->port); + connection_close_immediate(conn); + connection_mark_for_close(conn); + }); + + done: + smartlist_free(new_listeners); + smartlist_free(replaced_listeners); + return r; +} + +/** If we need to have a GEOIP ip-to-country map to run with our configured + * options, return 1 and set *reason_out to a description of why. */ +int +options_need_geoip_info(const or_options_t *options, const char **reason_out) +{ + int bridge_usage = should_record_bridge_info(options); + int routerset_usage = + routerset_needs_geoip(options->EntryNodes) || + routerset_needs_geoip(options->ExitNodes) || + routerset_needs_geoip(options->ExcludeExitNodes) || + routerset_needs_geoip(options->ExcludeNodes) || + routerset_needs_geoip(options->HSLayer2Nodes) || + routerset_needs_geoip(options->HSLayer3Nodes) || + routerset_needs_geoip(options->Tor2webRendezvousPoints); + + if (routerset_usage && reason_out) { + *reason_out = "We've been configured to use (or avoid) nodes in certain " + "countries, and we need GEOIP information to figure out which ones they " + "are."; + } else if (bridge_usage && reason_out) { + *reason_out = "We've been configured to see which countries can access " + "us as a bridge, and we need GEOIP information to tell which countries " + "clients are in."; + } + return bridge_usage || routerset_usage; +} + +/** Return the bandwidthrate that we are going to report to the authorities + * based on the config options. */ +uint32_t +get_effective_bwrate(const or_options_t *options) +{ + uint64_t bw = options->BandwidthRate; + if (bw > options->MaxAdvertisedBandwidth) + bw = options->MaxAdvertisedBandwidth; + if (options->RelayBandwidthRate > 0 && bw > options->RelayBandwidthRate) + bw = options->RelayBandwidthRate; + /* ensure_bandwidth_cap() makes sure that this cast can't overflow. */ + return (uint32_t)bw; +} + +/** Return the bandwidthburst that we are going to report to the authorities + * based on the config options. */ +uint32_t +get_effective_bwburst(const or_options_t *options) +{ + uint64_t bw = options->BandwidthBurst; + if (options->RelayBandwidthBurst > 0 && bw > options->RelayBandwidthBurst) + bw = options->RelayBandwidthBurst; + /* ensure_bandwidth_cap() makes sure that this cast can't overflow. */ + return (uint32_t)bw; +} + +/* Used in the various options_transition_affects* functions. */ +#define YES_IF_CHANGED_BOOL(opt) \ + if (!CFG_EQ_BOOL(old_options, new_options, opt)) return 1; +#define YES_IF_CHANGED_INT(opt) \ + if (!CFG_EQ_INT(old_options, new_options, opt)) return 1; +#define YES_IF_CHANGED_STRING(opt) \ + if (!CFG_EQ_STRING(old_options, new_options, opt)) return 1; +#define YES_IF_CHANGED_LINELIST(opt) \ + if (!CFG_EQ_LINELIST(old_options, new_options, opt)) return 1; +#define YES_IF_CHANGED_SMARTLIST(opt) \ + if (!CFG_EQ_SMARTLIST(old_options, new_options, opt)) return 1; +#define YES_IF_CHANGED_ROUTERSET(opt) \ + if (!CFG_EQ_ROUTERSET(old_options, new_options, opt)) return 1; + +/** + * Return true if changing the configuration from old to new + * affects the guard subsystem. + */ +static int +options_transition_affects_guards(const or_options_t *old_options, + const or_options_t *new_options) +{ + /* NOTE: Make sure this function stays in sync with + * node_passes_guard_filter */ + tor_assert(old_options); + tor_assert(new_options); + + YES_IF_CHANGED_BOOL(UseEntryGuards); + YES_IF_CHANGED_BOOL(UseBridges); + YES_IF_CHANGED_BOOL(ClientUseIPv4); + YES_IF_CHANGED_BOOL(ClientUseIPv6); + YES_IF_CHANGED_BOOL(FascistFirewall); + YES_IF_CHANGED_ROUTERSET(ExcludeNodes); + YES_IF_CHANGED_ROUTERSET(EntryNodes); + YES_IF_CHANGED_SMARTLIST(FirewallPorts); + YES_IF_CHANGED_LINELIST(Bridges); + YES_IF_CHANGED_LINELIST(ReachableORAddresses); + YES_IF_CHANGED_LINELIST(ReachableDirAddresses); + + return 0; +} + +/** + * Return true if changing the configuration from old to new + * affects the timing of the voting subsystem + */ +static int +options_transition_affects_dirauth_timing(const or_options_t *old_options, + const or_options_t *new_options) +{ + tor_assert(old_options); + tor_assert(new_options); + + if (authdir_mode_v3(old_options) != authdir_mode_v3(new_options)) + return 1; + if (! authdir_mode_v3(new_options)) + return 0; + YES_IF_CHANGED_INT(V3AuthVotingInterval); + YES_IF_CHANGED_INT(V3AuthVoteDelay); + YES_IF_CHANGED_INT(V3AuthDistDelay); + YES_IF_CHANGED_INT(TestingV3AuthInitialVotingInterval); + YES_IF_CHANGED_INT(TestingV3AuthInitialVoteDelay); + YES_IF_CHANGED_INT(TestingV3AuthInitialDistDelay); + YES_IF_CHANGED_INT(TestingV3AuthVotingStartOffset); + + return 0; +} + +/** Fetch the active option list, and take actions based on it. All of the + * things we do should survive being done repeatedly. If present, + * old_options contains the previous value of the options. + * + * Return 0 if all goes well, return -1 if it's time to die. + * + * Note: We haven't moved all the "act on new configuration" logic + * here yet. Some is still in do_hup() and other places. + */ +STATIC int +options_act(const or_options_t *old_options) +{ + config_line_t *cl; + or_options_t *options = get_options_mutable(); + int running_tor = options->command == CMD_RUN_TOR; + char *msg=NULL; + const int transition_affects_workers = + old_options && options_transition_affects_workers(old_options, options); + const int transition_affects_guards = + old_options && options_transition_affects_guards(old_options, options); + + if (options->NoExec || options->Sandbox) { + tor_disable_spawning_background_processes(); + } + + /* disable ptrace and later, other basic debugging techniques */ + { + /* Remember if we already disabled debugger attachment */ + static int disabled_debugger_attach = 0; + /* Remember if we already warned about being configured not to disable + * debugger attachment */ + static int warned_debugger_attach = 0; + /* Don't disable debugger attachment when we're running the unit tests. */ + if (options->DisableDebuggerAttachment && !disabled_debugger_attach && + running_tor) { + int ok = tor_disable_debugger_attach(); + /* LCOV_EXCL_START the warned_debugger_attach is 0 can't reach inside. */ + if (warned_debugger_attach && ok == 1) { + log_notice(LD_CONFIG, "Disabled attaching debuggers for unprivileged " + "users."); + } + /* LCOV_EXCL_STOP */ + disabled_debugger_attach = (ok == 1); + } else if (!options->DisableDebuggerAttachment && + !warned_debugger_attach) { + log_notice(LD_CONFIG, "Not disabling debugger attaching for " + "unprivileged users."); + warned_debugger_attach = 1; + } + } + + /* Write control ports to disk as appropriate */ + control_ports_write_to_file(); + + if (running_tor && !have_lockfile()) { + if (try_locking(options, 1) < 0) + return -1; + } + + { + int warning_severity = options->ProtocolWarnings ? LOG_WARN : LOG_INFO; + set_protocol_warning_severity_level(warning_severity); + } + + if (consider_adding_dir_servers(options, old_options) < 0) { + // XXXX This should get validated earlier, and committed here, to + // XXXX lower opportunities for reaching an error case. + return -1; + } + + if (rend_non_anonymous_mode_enabled(options)) { + log_warn(LD_GENERAL, "This copy of Tor was compiled or configured to run " + "in a non-anonymous mode. It will provide NO ANONYMITY."); + } + +#ifdef ENABLE_TOR2WEB_MODE +/* LCOV_EXCL_START */ + // XXXX This should move into options_validate() + if (!options->Tor2webMode) { + log_err(LD_CONFIG, "This copy of Tor was compiled to run in " + "'tor2web mode'. It can only be run with the Tor2webMode torrc " + "option enabled."); + return -1; + } +/* LCOV_EXCL_STOP */ +#else /* !(defined(ENABLE_TOR2WEB_MODE)) */ + // XXXX This should move into options_validate() + if (options->Tor2webMode) { + log_err(LD_CONFIG, "This copy of Tor was not compiled to run in " + "'tor2web mode'. It cannot be run with the Tor2webMode torrc " + "option enabled. To enable Tor2webMode recompile with the " + "--enable-tor2web-mode option."); + return -1; + } +#endif /* defined(ENABLE_TOR2WEB_MODE) */ + + /* If we are a bridge with a pluggable transport proxy but no + Extended ORPort, inform the user that they are missing out. */ + if (server_mode(options) && options->ServerTransportPlugin && + !options->ExtORPort_lines) { + log_notice(LD_CONFIG, "We use pluggable transports but the Extended " + "ORPort is disabled. Tor and your pluggable transports proxy " + "communicate with each other via the Extended ORPort so it " + "is suggested you enable it: it will also allow your Bridge " + "to collect statistics about its clients that use pluggable " + "transports. Please enable it using the ExtORPort torrc option " + "(e.g. set 'ExtORPort auto')."); + } + + if (options->Bridges) { + mark_bridge_list(); + for (cl = options->Bridges; cl; cl = cl->next) { + bridge_line_t *bridge_line = parse_bridge_line(cl->value); + if (!bridge_line) { + // LCOV_EXCL_START + log_warn(LD_BUG, + "Previously validated Bridge line could not be added!"); + return -1; + // LCOV_EXCL_STOP + } + bridge_add_from_config(bridge_line); + } + sweep_bridge_list(); + } + + if (running_tor && hs_config_service_all(options, 0)<0) { + // LCOV_EXCL_START + log_warn(LD_BUG, + "Previously validated hidden services line could not be added!"); + return -1; + // LCOV_EXCL_STOP + } + + if (running_tor && rend_parse_service_authorization(options, 0) < 0) { + // LCOV_EXCL_START + log_warn(LD_BUG, "Previously validated client authorization for " + "hidden services could not be added!"); + return -1; + // LCOV_EXCL_STOP + } + + if (running_tor && !old_options && options->OwningControllerFD != -1) { +#ifdef _WIN32 + log_warn(LD_CONFIG, "OwningControllerFD is not supported on Windows. " + "If you need it, tell the Tor developers."); + return -1; +#else + const unsigned ctrl_flags = + CC_LOCAL_FD_IS_OWNER | + CC_LOCAL_FD_IS_AUTHENTICATED; + tor_socket_t ctrl_sock = (tor_socket_t)options->OwningControllerFD; + if (control_connection_add_local_fd(ctrl_sock, ctrl_flags) < 0) { + log_warn(LD_CONFIG, "Could not add local controller connection with " + "given FD."); + return -1; + } +#endif /* defined(_WIN32) */ + } + + /* Load state */ + if (! or_state_loaded() && running_tor) { + if (or_state_load()) + return -1; + rep_hist_load_mtbf_data(time(NULL)); + } + + /* If we have an ExtORPort, initialize its auth cookie. */ + if (running_tor && + init_ext_or_cookie_authentication(!!options->ExtORPort_lines) < 0) { + log_warn(LD_CONFIG,"Error creating Extended ORPort cookie file."); + return -1; + } + + mark_transport_list(); + pt_prepare_proxy_list_for_config_read(); + if (!options->DisableNetwork) { + if (options->ClientTransportPlugin) { + for (cl = options->ClientTransportPlugin; cl; cl = cl->next) { + if (parse_transport_line(options, cl->value, 0, 0) < 0) { + // LCOV_EXCL_START + log_warn(LD_BUG, + "Previously validated ClientTransportPlugin line " + "could not be added!"); + return -1; + // LCOV_EXCL_STOP + } + } + } + + if (options->ServerTransportPlugin && server_mode(options)) { + for (cl = options->ServerTransportPlugin; cl; cl = cl->next) { + if (parse_transport_line(options, cl->value, 0, 1) < 0) { + // LCOV_EXCL_START + log_warn(LD_BUG, + "Previously validated ServerTransportPlugin line " + "could not be added!"); + return -1; + // LCOV_EXCL_STOP + } + } + } + } + sweep_transport_list(); + sweep_proxy_list(); + + /* Start the PT proxy configuration. By doing this configuration + here, we also figure out which proxies need to be restarted and + which not. */ + if (pt_proxies_configuration_pending() && !net_is_disabled()) + pt_configure_remaining_proxies(); + + /* Bail out at this point if we're not going to be a client or server: + * we want to not fork, and to log stuff to stderr. */ + if (!running_tor) + return 0; + + /* Finish backgrounding the process */ + if (options->RunAsDaemon) { + /* We may be calling this for the n'th time (on SIGHUP), but it's safe. */ + finish_daemon(options->DataDirectory); + } + + /* See whether we need to enable/disable our once-a-second timer. */ + reschedule_per_second_timer(); + + /* We want to reinit keys as needed before we do much of anything else: + keys are important, and other things can depend on them. */ + if (transition_affects_workers || + (options->V3AuthoritativeDir && (!old_options || + !old_options->V3AuthoritativeDir))) { + if (init_keys() < 0) { + log_warn(LD_BUG,"Error initializing keys; exiting"); + return -1; + } + } + + /* Write our PID to the PID file. If we do not have write permissions we + * will log a warning and exit. */ + if (options->PidFile && !sandbox_is_active()) { + if (write_pidfile(options->PidFile) < 0) { + log_err(LD_CONFIG, "Unable to write PIDFile %s", + escaped(options->PidFile)); + return -1; + } + } + + /* Register addressmap directives */ + config_register_addressmaps(options); + parse_virtual_addr_network(options->VirtualAddrNetworkIPv4, AF_INET,0,NULL); + parse_virtual_addr_network(options->VirtualAddrNetworkIPv6, AF_INET6,0,NULL); + + /* Update address policies. */ + if (policies_parse_from_options(options) < 0) { + /* This should be impossible, but let's be sure. */ + log_warn(LD_BUG,"Error parsing already-validated policy options."); + return -1; + } + + if (server_mode(options)) { + static int cdm_initialized = 0; + if (cdm_initialized == 0) { + cdm_initialized = 1; + consdiffmgr_configure(NULL); + consdiffmgr_validate(); + } + } + + if (init_control_cookie_authentication(options->CookieAuthentication) < 0) { + log_warn(LD_CONFIG,"Error creating control cookie authentication file."); + return -1; + } + + monitor_owning_controller_process(options->OwningControllerProcess); + + /* reload keys as needed for rendezvous services. */ + if (hs_service_load_all_keys() < 0) { + log_warn(LD_GENERAL,"Error loading rendezvous service keys"); + return -1; + } + + /* Inform the scheduler subsystem that a configuration changed happened. It + * might be a change of scheduler or parameter. */ + scheduler_conf_changed(); + + /* Set up accounting */ + if (accounting_parse_options(options, 0)<0) { + // LCOV_EXCL_START + log_warn(LD_BUG,"Error in previously validated accounting options"); + return -1; + // LCOV_EXCL_STOP + } + if (accounting_is_enabled(options)) + configure_accounting(time(NULL)); + + /* Change the cell EWMA settings */ + cmux_ewma_set_options(options, networkstatus_get_latest_consensus()); + + /* Update the BridgePassword's hashed version as needed. We store this as a + * digest so that we can do side-channel-proof comparisons on it. + */ + if (options->BridgePassword) { + char *http_authenticator; + http_authenticator = alloc_http_authenticator(options->BridgePassword); + if (!http_authenticator) { + // XXXX This should get validated in options_validate(). + log_warn(LD_BUG, "Unable to allocate HTTP authenticator. Not setting " + "BridgePassword."); + return -1; + } + options->BridgePassword_AuthDigest_ = tor_malloc(DIGEST256_LEN); + crypto_digest256(options->BridgePassword_AuthDigest_, + http_authenticator, strlen(http_authenticator), + DIGEST_SHA256); + tor_free(http_authenticator); + } + + if (parse_outbound_addresses(options, 0, &msg) < 0) { + // LCOV_EXCL_START + log_warn(LD_BUG, "Failed parsing previously validated outbound " + "bind addresses: %s", msg); + tor_free(msg); + return -1; + // LCOV_EXCL_STOP + } + + config_maybe_load_geoip_files_(options, old_options); + + if (geoip_is_loaded(AF_INET) && options->GeoIPExcludeUnknown) { + /* ExcludeUnknown is true or "auto" */ + const int is_auto = options->GeoIPExcludeUnknown == -1; + int changed; + + changed = routerset_add_unknown_ccs(&options->ExcludeNodes, is_auto); + changed += routerset_add_unknown_ccs(&options->ExcludeExitNodes, is_auto); + + if (changed) + routerset_add_unknown_ccs(&options->ExcludeExitNodesUnion_, is_auto); + } + + /* Check for transitions that need action. */ + if (old_options) { + int revise_trackexithosts = 0; + int revise_automap_entries = 0; + int abandon_circuits = 0; + if ((options->UseEntryGuards && !old_options->UseEntryGuards) || + options->UseBridges != old_options->UseBridges || + (options->UseBridges && + !config_lines_eq(options->Bridges, old_options->Bridges)) || + !routerset_equal(old_options->ExcludeNodes,options->ExcludeNodes) || + !routerset_equal(old_options->ExcludeExitNodes, + options->ExcludeExitNodes) || + !routerset_equal(old_options->EntryNodes, options->EntryNodes) || + !routerset_equal(old_options->ExitNodes, options->ExitNodes) || + !routerset_equal(old_options->HSLayer2Nodes, + options->HSLayer2Nodes) || + !routerset_equal(old_options->HSLayer3Nodes, + options->HSLayer3Nodes) || + !routerset_equal(old_options->Tor2webRendezvousPoints, + options->Tor2webRendezvousPoints) || + options->StrictNodes != old_options->StrictNodes) { + log_info(LD_CIRC, + "Changed to using entry guards or bridges, or changed " + "preferred or excluded node lists. " + "Abandoning previous circuits."); + abandon_circuits = 1; + } + + if (transition_affects_guards) { + if (guards_update_all()) { + abandon_circuits = 1; + } + } + + if (abandon_circuits) { + circuit_mark_all_unused_circs(); + circuit_mark_all_dirty_circs_as_unusable(); + revise_trackexithosts = 1; + } + + if (!smartlist_strings_eq(old_options->TrackHostExits, + options->TrackHostExits)) + revise_trackexithosts = 1; + + if (revise_trackexithosts) + addressmap_clear_excluded_trackexithosts(options); + + if (!options->AutomapHostsOnResolve && + old_options->AutomapHostsOnResolve) { + revise_automap_entries = 1; + } else { + if (!smartlist_strings_eq(old_options->AutomapHostsSuffixes, + options->AutomapHostsSuffixes)) + revise_automap_entries = 1; + else if (!opt_streq(old_options->VirtualAddrNetworkIPv4, + options->VirtualAddrNetworkIPv4) || + !opt_streq(old_options->VirtualAddrNetworkIPv6, + options->VirtualAddrNetworkIPv6)) + revise_automap_entries = 1; + } + + if (revise_automap_entries) + addressmap_clear_invalid_automaps(options); + +/* How long should we delay counting bridge stats after becoming a bridge? + * We use this so we don't count clients who used our bridge thinking it is + * a relay. If you change this, don't forget to change the log message + * below. It's 4 hours (the time it takes to stop being used by clients) + * plus some extra time for clock skew. */ +#define RELAY_BRIDGE_STATS_DELAY (6 * 60 * 60) + + if (! bool_eq(options->BridgeRelay, old_options->BridgeRelay)) { + int was_relay = 0; + if (options->BridgeRelay) { + time_t int_start = time(NULL); + if (config_lines_eq(old_options->ORPort_lines,options->ORPort_lines)) { + int_start += RELAY_BRIDGE_STATS_DELAY; + was_relay = 1; + } + geoip_bridge_stats_init(int_start); + log_info(LD_CONFIG, "We are acting as a bridge now. Starting new " + "GeoIP stats interval%s.", was_relay ? " in 6 " + "hours from now" : ""); + } else { + geoip_bridge_stats_term(); + log_info(LD_GENERAL, "We are no longer acting as a bridge. " + "Forgetting GeoIP stats."); + } + } + + if (transition_affects_workers) { + log_info(LD_GENERAL, + "Worker-related options changed. Rotating workers."); + const int server_mode_turned_on = + server_mode(options) && !server_mode(old_options); + const int dir_server_mode_turned_on = + dir_server_mode(options) && !dir_server_mode(old_options); + + if (server_mode_turned_on || dir_server_mode_turned_on) { + cpu_init(); + } + + if (server_mode_turned_on) { + ip_address_changed(0); + if (have_completed_a_circuit() || !any_predicted_circuits(time(NULL))) + inform_testing_reachability(); + } + cpuworkers_rotate_keyinfo(); + if (dns_reset()) + return -1; + } else { + if (dns_reset()) + return -1; + } + + if (options->PerConnBWRate != old_options->PerConnBWRate || + options->PerConnBWBurst != old_options->PerConnBWBurst) + connection_or_update_token_buckets(get_connection_array(), options); + + if (options->BandwidthRate != old_options->BandwidthRate || + options->BandwidthBurst != old_options->BandwidthBurst || + options->RelayBandwidthRate != old_options->RelayBandwidthRate || + options->RelayBandwidthBurst != old_options->RelayBandwidthBurst) + connection_bucket_adjust(options); + + if (options->MainloopStats != old_options->MainloopStats) { + reset_main_loop_counters(); + } + } + + /* Only collect directory-request statistics on relays and bridges. */ + options->DirReqStatistics = options->DirReqStatistics_option && + server_mode(options); + options->HiddenServiceStatistics = + options->HiddenServiceStatistics_option && server_mode(options); + + if (options->CellStatistics || options->DirReqStatistics || + options->EntryStatistics || options->ExitPortStatistics || + options->ConnDirectionStatistics || + options->HiddenServiceStatistics || + options->BridgeAuthoritativeDir) { + time_t now = time(NULL); + int print_notice = 0; + + /* Only collect other relay-only statistics on relays. */ + if (!public_server_mode(options)) { + options->CellStatistics = 0; + options->EntryStatistics = 0; + options->ConnDirectionStatistics = 0; + options->ExitPortStatistics = 0; + } + + if ((!old_options || !old_options->CellStatistics) && + options->CellStatistics) { + rep_hist_buffer_stats_init(now); + print_notice = 1; + } + if ((!old_options || !old_options->DirReqStatistics) && + options->DirReqStatistics) { + if (geoip_is_loaded(AF_INET)) { + geoip_dirreq_stats_init(now); + print_notice = 1; + } else { + /* disable statistics collection since we have no geoip file */ + options->DirReqStatistics = 0; + if (options->ORPort_set) + log_notice(LD_CONFIG, "Configured to measure directory request " + "statistics, but no GeoIP database found. " + "Please specify a GeoIP database using the " + "GeoIPFile option."); + } + } + if ((!old_options || !old_options->EntryStatistics) && + options->EntryStatistics && !should_record_bridge_info(options)) { + /* If we get here, we've started recording bridge info when we didn't + * do so before. Note that "should_record_bridge_info()" will + * always be false at this point, because of the earlier block + * that cleared EntryStatistics when public_server_mode() was false. + * We're leaving it in as defensive programming. */ + if (geoip_is_loaded(AF_INET) || geoip_is_loaded(AF_INET6)) { + geoip_entry_stats_init(now); + print_notice = 1; + } else { + options->EntryStatistics = 0; + log_notice(LD_CONFIG, "Configured to measure entry node " + "statistics, but no GeoIP database found. " + "Please specify a GeoIP database using the " + "GeoIPFile option."); + } + } + if ((!old_options || !old_options->ExitPortStatistics) && + options->ExitPortStatistics) { + rep_hist_exit_stats_init(now); + print_notice = 1; + } + if ((!old_options || !old_options->ConnDirectionStatistics) && + options->ConnDirectionStatistics) { + rep_hist_conn_stats_init(now); + } + if ((!old_options || !old_options->HiddenServiceStatistics) && + options->HiddenServiceStatistics) { + log_info(LD_CONFIG, "Configured to measure hidden service statistics."); + rep_hist_hs_stats_init(now); + } + if ((!old_options || !old_options->BridgeAuthoritativeDir) && + options->BridgeAuthoritativeDir) { + rep_hist_desc_stats_init(now); + print_notice = 1; + } + if (print_notice) + log_notice(LD_CONFIG, "Configured to measure statistics. Look for " + "the *-stats files that will first be written to the " + "data directory in 24 hours from now."); + } + + /* If we used to have statistics enabled but we just disabled them, + stop gathering them. */ + if (old_options && old_options->CellStatistics && + !options->CellStatistics) + rep_hist_buffer_stats_term(); + if (old_options && old_options->DirReqStatistics && + !options->DirReqStatistics) + geoip_dirreq_stats_term(); + if (old_options && old_options->EntryStatistics && + !options->EntryStatistics) + geoip_entry_stats_term(); + if (old_options && old_options->HiddenServiceStatistics && + !options->HiddenServiceStatistics) + rep_hist_hs_stats_term(); + if (old_options && old_options->ExitPortStatistics && + !options->ExitPortStatistics) + rep_hist_exit_stats_term(); + if (old_options && old_options->ConnDirectionStatistics && + !options->ConnDirectionStatistics) + rep_hist_conn_stats_term(); + if (old_options && old_options->BridgeAuthoritativeDir && + !options->BridgeAuthoritativeDir) + rep_hist_desc_stats_term(); + + /* Since our options changed, we might need to regenerate and upload our + * server descriptor. + */ + if (!old_options || + options_transition_affects_descriptor(old_options, options)) + mark_my_descriptor_dirty("config change"); + + /* We may need to reschedule some directory stuff if our status changed. */ + if (old_options) { + if (options_transition_affects_dirauth_timing(old_options, options)) { + voting_schedule_recalculate_timing(options, time(NULL)); + reschedule_dirvote(options); + } + if (!bool_eq(directory_fetches_dir_info_early(options), + directory_fetches_dir_info_early(old_options)) || + !bool_eq(directory_fetches_dir_info_later(options), + directory_fetches_dir_info_later(old_options))) { + /* Make sure update_router_have_minimum_dir_info() gets called. */ + router_dir_info_changed(); + /* We might need to download a new consensus status later or sooner than + * we had expected. */ + update_consensus_networkstatus_fetch_time(time(NULL)); + } + } + + /* DoS mitigation subsystem only applies to public relay. */ + if (public_server_mode(options)) { + /* If we are configured as a relay, initialize the subsystem. Even on HUP, + * this is safe to call as it will load data from the current options + * or/and the consensus. */ + dos_init(); + } else if (old_options && public_server_mode(old_options)) { + /* Going from relay to non relay, clean it up. */ + dos_free_all(); + } + + /* Load the webpage we're going to serve every time someone asks for '/' on + our DirPort. */ + tor_free(global_dirfrontpagecontents); + if (options->DirPortFrontPage) { + global_dirfrontpagecontents = + read_file_to_str(options->DirPortFrontPage, 0, NULL); + if (!global_dirfrontpagecontents) { + log_warn(LD_CONFIG, + "DirPortFrontPage file '%s' not found. Continuing anyway.", + options->DirPortFrontPage); + } + } + + return 0; +} + +typedef enum { + TAKES_NO_ARGUMENT = 0, + ARGUMENT_NECESSARY = 1, + ARGUMENT_OPTIONAL = 2 +} takes_argument_t; + +static const struct { + const char *name; + takes_argument_t takes_argument; +} CMDLINE_ONLY_OPTIONS[] = { + { "-f", ARGUMENT_NECESSARY }, + { "--allow-missing-torrc", TAKES_NO_ARGUMENT }, + { "--defaults-torrc", ARGUMENT_NECESSARY }, + { "--hash-password", ARGUMENT_NECESSARY }, + { "--dump-config", ARGUMENT_OPTIONAL }, + { "--list-fingerprint", TAKES_NO_ARGUMENT }, + { "--keygen", TAKES_NO_ARGUMENT }, + { "--key-expiration", ARGUMENT_OPTIONAL }, + { "--newpass", TAKES_NO_ARGUMENT }, + { "--no-passphrase", TAKES_NO_ARGUMENT }, + { "--passphrase-fd", ARGUMENT_NECESSARY }, + { "--verify-config", TAKES_NO_ARGUMENT }, + { "--ignore-missing-torrc", TAKES_NO_ARGUMENT }, + { "--quiet", TAKES_NO_ARGUMENT }, + { "--hush", TAKES_NO_ARGUMENT }, + { "--version", TAKES_NO_ARGUMENT }, + { "--library-versions", TAKES_NO_ARGUMENT }, + { "-h", TAKES_NO_ARGUMENT }, + { "--help", TAKES_NO_ARGUMENT }, + { "--list-torrc-options", TAKES_NO_ARGUMENT }, + { "--list-deprecated-options",TAKES_NO_ARGUMENT }, + { "--nt-service", TAKES_NO_ARGUMENT }, + { "-nt-service", TAKES_NO_ARGUMENT }, + { NULL, 0 }, +}; + +/** Helper: Read a list of configuration options from the command line. If + * successful, or if ignore_errors is set, put them in *result, put the + * commandline-only options in *cmdline_result, and return 0; + * otherwise, return -1 and leave *result and cmdline_result + * alone. */ +int +config_parse_commandline(int argc, char **argv, int ignore_errors, + config_line_t **result, + config_line_t **cmdline_result) +{ + config_line_t *param = NULL; + + config_line_t *front = NULL; + config_line_t **new = &front; + + config_line_t *front_cmdline = NULL; + config_line_t **new_cmdline = &front_cmdline; + + char *s, *arg; + int i = 1; + + while (i < argc) { + unsigned command = CONFIG_LINE_NORMAL; + takes_argument_t want_arg = ARGUMENT_NECESSARY; + int is_cmdline = 0; + int j; + + for (j = 0; CMDLINE_ONLY_OPTIONS[j].name != NULL; ++j) { + if (!strcmp(argv[i], CMDLINE_ONLY_OPTIONS[j].name)) { + is_cmdline = 1; + want_arg = CMDLINE_ONLY_OPTIONS[j].takes_argument; + break; + } + } + + s = argv[i]; + + /* Each keyword may be prefixed with one or two dashes. */ + if (*s == '-') + s++; + if (*s == '-') + s++; + /* Figure out the command, if any. */ + if (*s == '+') { + s++; + command = CONFIG_LINE_APPEND; + } else if (*s == '/') { + s++; + command = CONFIG_LINE_CLEAR; + /* A 'clear' command has no argument. */ + want_arg = 0; + } + + const int is_last = (i == argc-1); + + if (want_arg == ARGUMENT_NECESSARY && is_last) { + if (ignore_errors) { + arg = tor_strdup(""); + } else { + log_warn(LD_CONFIG,"Command-line option '%s' with no value. Failing.", + argv[i]); + config_free_lines(front); + config_free_lines(front_cmdline); + return -1; + } + } else if (want_arg == ARGUMENT_OPTIONAL && is_last) { + arg = tor_strdup(""); + } else { + arg = (want_arg != TAKES_NO_ARGUMENT) ? tor_strdup(argv[i+1]) : + tor_strdup(""); + } + + param = tor_malloc_zero(sizeof(config_line_t)); + param->key = is_cmdline ? tor_strdup(argv[i]) : + tor_strdup(config_expand_abbrev(&options_format, s, 1, 1)); + param->value = arg; + param->command = command; + param->next = NULL; + log_debug(LD_CONFIG, "command line: parsed keyword '%s', value '%s'", + param->key, param->value); + + if (is_cmdline) { + *new_cmdline = param; + new_cmdline = &((*new_cmdline)->next); + } else { + *new = param; + new = &((*new)->next); + } + + i += want_arg ? 2 : 1; + } + *cmdline_result = front_cmdline; + *result = front; + return 0; +} + +/** Return true iff key is a valid configuration option. */ +int +option_is_recognized(const char *key) +{ + const config_var_t *var = config_find_option(&options_format, key); + return (var != NULL); +} + +/** Return the canonical name of a configuration option, or NULL + * if no such option exists. */ +const char * +option_get_canonical_name(const char *key) +{ + const config_var_t *var = config_find_option(&options_format, key); + return var ? var->name : NULL; +} + +/** Return a canonical list of the options assigned for key. + */ +config_line_t * +option_get_assignment(const or_options_t *options, const char *key) +{ + return config_get_assigned_option(&options_format, options, key, 1); +} + +/** Try assigning list to the global options. You do this by duping + * options, assigning list to the new one, then validating it. If it's + * ok, then throw out the old one and stick with the new one. Else, + * revert to old and return failure. Return SETOPT_OK on success, or + * a setopt_err_t on failure. + * + * If not success, point *msg to a newly allocated string describing + * what went wrong. + */ +setopt_err_t +options_trial_assign(config_line_t *list, unsigned flags, char **msg) +{ + int r; + or_options_t *trial_options = config_dup(&options_format, get_options()); + + if ((r=config_assign(&options_format, trial_options, + list, flags, msg)) < 0) { + or_options_free(trial_options); + return r; + } + + setopt_err_t rv; + or_options_t *cur_options = get_options_mutable(); + + in_option_validation = 1; + + if (options_validate(cur_options, trial_options, + global_default_options, 1, msg) < 0) { + or_options_free(trial_options); + rv = SETOPT_ERR_PARSE; /*XXX make this a separate return value. */ + goto done; + } + + if (options_transition_allowed(cur_options, trial_options, msg) < 0) { + or_options_free(trial_options); + rv = SETOPT_ERR_TRANSITION; + goto done; + } + in_option_validation = 0; + + if (set_options(trial_options, msg)<0) { + or_options_free(trial_options); + rv = SETOPT_ERR_SETTING; + goto done; + } + + /* we liked it. put it in place. */ + rv = SETOPT_OK; + done: + in_option_validation = 0; + return rv; +} + +/** Print a usage message for tor. */ +static void +print_usage(void) +{ + printf( +"Copyright (c) 2001-2004, Roger Dingledine\n" +"Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson\n" +"Copyright (c) 2007-2018, The Tor Project, Inc.\n\n" +"tor -f [args]\n" +"See man page for options, or https://www.torproject.org/ for " +"documentation.\n"); +} + +/** Print all non-obsolete torrc options. */ +static void +list_torrc_options(void) +{ + int i; + for (i = 0; option_vars_[i].name; ++i) { + const config_var_t *var = &option_vars_[i]; + if (var->type == CONFIG_TYPE_OBSOLETE || + var->type == CONFIG_TYPE_LINELIST_V) + continue; + printf("%s\n", var->name); + } +} + +/** Print all deprecated but non-obsolete torrc options. */ +static void +list_deprecated_options(void) +{ + const config_deprecation_t *d; + for (d = option_deprecation_notes_; d->name; ++d) { + printf("%s\n", d->name); + } +} + +/** Last value actually set by resolve_my_address. */ +static uint32_t last_resolved_addr = 0; + +/** Accessor for last_resolved_addr from outside this file. */ +uint32_t +get_last_resolved_addr(void) +{ + return last_resolved_addr; +} + +/** Reset last_resolved_addr from outside this file. */ +void +reset_last_resolved_addr(void) +{ + last_resolved_addr = 0; +} + +/* Return true if options is using the default authorities, and false + * if any authority-related option has been overridden. */ +int +using_default_dir_authorities(const or_options_t *options) +{ + return (!options->DirAuthorities && !options->AlternateDirAuthority); +} + +/** + * Attempt getting our non-local (as judged by tor_addr_is_internal() + * function) IP address using following techniques, listed in + * order from best (most desirable, try first) to worst (least + * desirable, try if everything else fails). + * + * First, attempt using options-\>Address to get our + * non-local IP address. + * + * If options-\>Address represents a non-local IP address, + * consider it ours. + * + * If options-\>Address is a DNS name that resolves to + * a non-local IP address, consider this IP address ours. + * + * If options-\>Address is NULL, fall back to getting local + * hostname and using it in above-described ways to try and + * get our IP address. + * + * In case local hostname cannot be resolved to a non-local IP + * address, try getting an IP address of network interface + * in hopes it will be non-local one. + * + * Fail if one or more of the following is true: + * - DNS name in options-\>Address cannot be resolved. + * - options-\>Address is a local host address. + * - Attempt at getting local hostname fails. + * - Attempt at getting network interface address fails. + * + * Return 0 if all is well, or -1 if we can't find a suitable + * public IP address. + * + * If we are returning 0: + * - Put our public IP address (in host order) into *addr_out. + * - If method_out is non-NULL, set *method_out to a static + * string describing how we arrived at our answer. + * - "CONFIGURED" - parsed from IP address string in + * options-\>Address + * - "RESOLVED" - resolved from DNS name in options-\>Address + * - "GETHOSTNAME" - resolved from a local hostname. + * - "INTERFACE" - retrieved from a network interface. + * - If hostname_out is non-NULL, and we resolved a hostname to + * get our address, set *hostname_out to a newly allocated string + * holding that hostname. (If we didn't get our address by resolving a + * hostname, set *hostname_out to NULL.) + * + * XXXX ipv6 + */ +int +resolve_my_address(int warn_severity, const or_options_t *options, + uint32_t *addr_out, + const char **method_out, char **hostname_out) +{ + struct in_addr in; + uint32_t addr; /* host order */ + char hostname[256]; + const char *method_used; + const char *hostname_used; + int explicit_ip=1; + int explicit_hostname=1; + int from_interface=0; + char *addr_string = NULL; + const char *address = options->Address; + int notice_severity = warn_severity <= LOG_NOTICE ? + LOG_NOTICE : warn_severity; + + tor_addr_t myaddr; + tor_assert(addr_out); + + /* + * Step one: Fill in 'hostname' to be our best guess. + */ + + if (address && *address) { + strlcpy(hostname, address, sizeof(hostname)); + } else { /* then we need to guess our address */ + explicit_ip = 0; /* it's implicit */ + explicit_hostname = 0; /* it's implicit */ + + if (tor_gethostname(hostname, sizeof(hostname)) < 0) { + log_fn(warn_severity, LD_NET,"Error obtaining local hostname"); + return -1; + } + log_debug(LD_CONFIG, "Guessed local host name as '%s'", hostname); + } + + /* + * Step two: Now that we know 'hostname', parse it or resolve it. If + * it doesn't parse or resolve, look at the interface address. Set 'addr' + * to be our (host-order) 32-bit answer. + */ + + if (tor_inet_aton(hostname, &in) == 0) { + /* then we have to resolve it */ + explicit_ip = 0; + if (tor_lookup_hostname(hostname, &addr)) { /* failed to resolve */ + uint32_t interface_ip; /* host order */ + + if (explicit_hostname) { + log_fn(warn_severity, LD_CONFIG, + "Could not resolve local Address '%s'. Failing.", hostname); + return -1; + } + log_fn(notice_severity, LD_CONFIG, + "Could not resolve guessed local hostname '%s'. " + "Trying something else.", hostname); + if (get_interface_address(warn_severity, &interface_ip)) { + log_fn(warn_severity, LD_CONFIG, + "Could not get local interface IP address. Failing."); + return -1; + } + from_interface = 1; + addr = interface_ip; + log_fn(notice_severity, LD_CONFIG, "Learned IP address '%s' for " + "local interface. Using that.", fmt_addr32(addr)); + strlcpy(hostname, "", sizeof(hostname)); + } else { /* resolved hostname into addr */ + tor_addr_from_ipv4h(&myaddr, addr); + + if (!explicit_hostname && + tor_addr_is_internal(&myaddr, 0)) { + tor_addr_t interface_ip; + + log_fn(notice_severity, LD_CONFIG, "Guessed local hostname '%s' " + "resolves to a private IP address (%s). Trying something " + "else.", hostname, fmt_addr32(addr)); + + if (get_interface_address6(warn_severity, AF_INET, &interface_ip)<0) { + log_fn(warn_severity, LD_CONFIG, + "Could not get local interface IP address. Too bad."); + } else if (tor_addr_is_internal(&interface_ip, 0)) { + log_fn(notice_severity, LD_CONFIG, + "Interface IP address '%s' is a private address too. " + "Ignoring.", fmt_addr(&interface_ip)); + } else { + from_interface = 1; + addr = tor_addr_to_ipv4h(&interface_ip); + log_fn(notice_severity, LD_CONFIG, + "Learned IP address '%s' for local interface." + " Using that.", fmt_addr32(addr)); + strlcpy(hostname, "", sizeof(hostname)); + } + } + } + } else { + addr = ntohl(in.s_addr); /* set addr so that addr_string is not + * illformed */ + } + + /* + * Step three: Check whether 'addr' is an internal IP address, and error + * out if it is and we don't want that. + */ + + tor_addr_from_ipv4h(&myaddr,addr); + + addr_string = tor_dup_ip(addr); + if (tor_addr_is_internal(&myaddr, 0)) { + /* make sure we're ok with publishing an internal IP */ + if (using_default_dir_authorities(options)) { + /* if they are using the default authorities, disallow internal IPs + * always. */ + log_fn(warn_severity, LD_CONFIG, + "Address '%s' resolves to private IP address '%s'. " + "Tor servers that use the default DirAuthorities must have " + "public IP addresses.", hostname, addr_string); + tor_free(addr_string); + return -1; + } + if (!explicit_ip) { + /* even if they've set their own authorities, require an explicit IP if + * they're using an internal address. */ + log_fn(warn_severity, LD_CONFIG, "Address '%s' resolves to private " + "IP address '%s'. Please set the Address config option to be " + "the IP address you want to use.", hostname, addr_string); + tor_free(addr_string); + return -1; + } + } + + /* + * Step four: We have a winner! 'addr' is our answer for sure, and + * 'addr_string' is its string form. Fill out the various fields to + * say how we decided it. + */ + + log_debug(LD_CONFIG, "Resolved Address to '%s'.", addr_string); + + if (explicit_ip) { + method_used = "CONFIGURED"; + hostname_used = NULL; + } else if (explicit_hostname) { + method_used = "RESOLVED"; + hostname_used = hostname; + } else if (from_interface) { + method_used = "INTERFACE"; + hostname_used = NULL; + } else { + method_used = "GETHOSTNAME"; + hostname_used = hostname; + } + + *addr_out = addr; + if (method_out) + *method_out = method_used; + if (hostname_out) + *hostname_out = hostname_used ? tor_strdup(hostname_used) : NULL; + + /* + * Step five: Check if the answer has changed since last time (or if + * there was no last time), and if so call various functions to keep + * us up-to-date. + */ + + if (last_resolved_addr && last_resolved_addr != *addr_out) { + /* Leave this as a notice, regardless of the requested severity, + * at least until dynamic IP address support becomes bulletproof. */ + log_notice(LD_NET, + "Your IP address seems to have changed to %s " + "(METHOD=%s%s%s). Updating.", + addr_string, method_used, + hostname_used ? " HOSTNAME=" : "", + hostname_used ? hostname_used : ""); + ip_address_changed(0); + } + + if (last_resolved_addr != *addr_out) { + control_event_server_status(LOG_NOTICE, + "EXTERNAL_ADDRESS ADDRESS=%s METHOD=%s%s%s", + addr_string, method_used, + hostname_used ? " HOSTNAME=" : "", + hostname_used ? hostname_used : ""); + } + last_resolved_addr = *addr_out; + + /* + * And finally, clean up and return success. + */ + + tor_free(addr_string); + return 0; +} + +/** Return true iff addr is judged to be on the same network as us, or + * on a private network. + */ +MOCK_IMPL(int, +is_local_addr, (const tor_addr_t *addr)) +{ + if (tor_addr_is_internal(addr, 0)) + return 1; + /* Check whether ip is on the same /24 as we are. */ + if (get_options()->EnforceDistinctSubnets == 0) + return 0; + if (tor_addr_family(addr) == AF_INET) { + uint32_t ip = tor_addr_to_ipv4h(addr); + + /* It's possible that this next check will hit before the first time + * resolve_my_address actually succeeds. (For clients, it is likely that + * resolve_my_address will never be called at all). In those cases, + * last_resolved_addr will be 0, and so checking to see whether ip is on + * the same /24 as last_resolved_addr will be the same as checking whether + * it was on net 0, which is already done by tor_addr_is_internal. + */ + if ((last_resolved_addr & (uint32_t)0xffffff00ul) + == (ip & (uint32_t)0xffffff00ul)) + return 1; + } + return 0; +} + +/** Return a new empty or_options_t. Used for testing. */ +or_options_t * +options_new(void) +{ + return config_new(&options_format); +} + +/** Set options to hold reasonable defaults for most options. + * Each option defaults to zero. */ +void +options_init(or_options_t *options) +{ + config_init(&options_format, options); +} + +/** Return a string containing a possible configuration file that would give + * the configuration in options. If minimal is true, do not + * include options that are the same as Tor's defaults. + */ +char * +options_dump(const or_options_t *options, int how_to_dump) +{ + const or_options_t *use_defaults; + int minimal; + switch (how_to_dump) { + case OPTIONS_DUMP_MINIMAL: + use_defaults = global_default_options; + minimal = 1; + break; + case OPTIONS_DUMP_DEFAULTS: + use_defaults = NULL; + minimal = 1; + break; + case OPTIONS_DUMP_ALL: + use_defaults = NULL; + minimal = 0; + break; + default: + log_warn(LD_BUG, "Bogus value for how_to_dump==%d", how_to_dump); + return NULL; + } + + return config_dump(&options_format, use_defaults, options, minimal, 0); +} + +/** Return 0 if every element of sl is a string holding a decimal + * representation of a port number, or if sl is NULL. + * Otherwise set *msg and return -1. */ +static int +validate_ports_csv(smartlist_t *sl, const char *name, char **msg) +{ + int i; + tor_assert(name); + + if (!sl) + return 0; + + SMARTLIST_FOREACH(sl, const char *, cp, + { + i = atoi(cp); + if (i < 1 || i > 65535) { + tor_asprintf(msg, "Port '%s' out of range in %s", cp, name); + return -1; + } + }); + return 0; +} + +/** If value exceeds ROUTER_MAX_DECLARED_BANDWIDTH, write + * a complaint into *msg using string desc, and return -1. + * Else return 0. + */ +static int +ensure_bandwidth_cap(uint64_t *value, const char *desc, char **msg) +{ + if (*value > ROUTER_MAX_DECLARED_BANDWIDTH) { + /* This handles an understandable special case where somebody says "2gb" + * whereas our actual maximum is 2gb-1 (INT_MAX) */ + --*value; + } + if (*value > ROUTER_MAX_DECLARED_BANDWIDTH) { + tor_asprintf(msg, "%s (%"PRIu64") must be at most %d", + desc, (*value), + ROUTER_MAX_DECLARED_BANDWIDTH); + return -1; + } + return 0; +} + +/** Parse an authority type from options-\>PublishServerDescriptor + * and write it to options-\>PublishServerDescriptor_. Treat "1" + * as "v3" unless BridgeRelay is 1, in which case treat it as "bridge". + * Treat "0" as "". + * Return 0 on success or -1 if not a recognized authority type (in which + * case the value of PublishServerDescriptor_ is undefined). */ +static int +compute_publishserverdescriptor(or_options_t *options) +{ + smartlist_t *list = options->PublishServerDescriptor; + dirinfo_type_t *auth = &options->PublishServerDescriptor_; + *auth = NO_DIRINFO; + if (!list) /* empty list, answer is none */ + return 0; + SMARTLIST_FOREACH_BEGIN(list, const char *, string) { + if (!strcasecmp(string, "v1")) + log_warn(LD_CONFIG, "PublishServerDescriptor v1 has no effect, because " + "there are no v1 directory authorities anymore."); + else if (!strcmp(string, "1")) + if (options->BridgeRelay) + *auth |= BRIDGE_DIRINFO; + else + *auth |= V3_DIRINFO; + else if (!strcasecmp(string, "v2")) + log_warn(LD_CONFIG, "PublishServerDescriptor v2 has no effect, because " + "there are no v2 directory authorities anymore."); + else if (!strcasecmp(string, "v3")) + *auth |= V3_DIRINFO; + else if (!strcasecmp(string, "bridge")) + *auth |= BRIDGE_DIRINFO; + else if (!strcasecmp(string, "hidserv")) + log_warn(LD_CONFIG, + "PublishServerDescriptor hidserv is invalid. See " + "PublishHidServDescriptors."); + else if (!strcasecmp(string, "") || !strcmp(string, "0")) + /* no authority */; + else + return -1; + } SMARTLIST_FOREACH_END(string); + return 0; +} + +/** Lowest allowable value for RendPostPeriod; if this is too low, hidden + * services can overload the directory system. */ +#define MIN_REND_POST_PERIOD (10*60) +#define MIN_REND_POST_PERIOD_TESTING (5) + +/** Highest allowable value for CircuitsAvailableTimeout. + * If this is too large, client connections will stay open for too long, + * incurring extra padding overhead. */ +#define MAX_CIRCS_AVAILABLE_TIME (24*60*60) + +/** Highest allowable value for RendPostPeriod. */ +#define MAX_DIR_PERIOD ((7*24*60*60)/2) + +/** Lowest allowable value for MaxCircuitDirtiness; if this is too low, Tor + * will generate too many circuits and potentially overload the network. */ +#define MIN_MAX_CIRCUIT_DIRTINESS 10 + +/** Highest allowable value for MaxCircuitDirtiness: prevents time_t + * overflows. */ +#define MAX_MAX_CIRCUIT_DIRTINESS (30*24*60*60) + +/** Lowest allowable value for CircuitStreamTimeout; if this is too low, Tor + * will generate too many circuits and potentially overload the network. */ +#define MIN_CIRCUIT_STREAM_TIMEOUT 10 + +/** Lowest recommended value for CircuitBuildTimeout; if it is set too low + * and LearnCircuitBuildTimeout is off, the failure rate for circuit + * construction may be very high. In that case, if it is set below this + * threshold emit a warning. + * */ +#define RECOMMENDED_MIN_CIRCUIT_BUILD_TIMEOUT (10) + +static int +options_validate_cb(void *old_options, void *options, void *default_options, + int from_setconf, char **msg) +{ + in_option_validation = 1; + int rv = options_validate(old_options, options, default_options, + from_setconf, msg); + in_option_validation = 0; + return rv; +} + +#define REJECT(arg) \ + STMT_BEGIN *msg = tor_strdup(arg); return -1; STMT_END +#if defined(__GNUC__) && __GNUC__ <= 3 +#define COMPLAIN(args...) \ + STMT_BEGIN log_warn(LD_CONFIG, args); STMT_END +#else +#define COMPLAIN(args, ...) \ + STMT_BEGIN log_warn(LD_CONFIG, args, ##__VA_ARGS__); STMT_END +#endif /* defined(__GNUC__) && __GNUC__ <= 3 */ + +/** Log a warning message iff filepath is not absolute. + * Warning message must contain option name option and + * an absolute path that filepath will resolve to. + * + * In case filepath is absolute, do nothing. + * + * Return 1 if there were relative paths; 0 otherwise. + */ +static int +warn_if_option_path_is_relative(const char *option, + char *filepath) +{ + if (filepath && path_is_relative(filepath)) { + char *abs_path = make_path_absolute(filepath); + COMPLAIN("Path for %s (%s) is relative and will resolve to %s." + " Is this what you wanted?", option, filepath, abs_path); + tor_free(abs_path); + return 1; + } + return 0; +} + +/** Scan options for occurrences of relative file/directory + * path and log a warning whenever it is found. + * + * Return 1 if there were relative paths; 0 otherwise. + */ +static int +warn_about_relative_paths(or_options_t *options) +{ + tor_assert(options); + int n = 0; + + n += warn_if_option_path_is_relative("CookieAuthFile", + options->CookieAuthFile); + n += warn_if_option_path_is_relative("ExtORPortCookieAuthFile", + options->ExtORPortCookieAuthFile); + n += warn_if_option_path_is_relative("DirPortFrontPage", + options->DirPortFrontPage); + n += warn_if_option_path_is_relative("V3BandwidthsFile", + options->V3BandwidthsFile); + n += warn_if_option_path_is_relative("ControlPortWriteToFile", + options->ControlPortWriteToFile); + n += warn_if_option_path_is_relative("GeoIPFile",options->GeoIPFile); + n += warn_if_option_path_is_relative("GeoIPv6File",options->GeoIPv6File); + n += warn_if_option_path_is_relative("Log",options->DebugLogFile); + n += warn_if_option_path_is_relative("AccelDir",options->AccelDir); + n += warn_if_option_path_is_relative("DataDirectory",options->DataDirectory); + n += warn_if_option_path_is_relative("PidFile",options->PidFile); + + for (config_line_t *hs_line = options->RendConfigLines; hs_line; + hs_line = hs_line->next) { + if (!strcasecmp(hs_line->key, "HiddenServiceDir")) + n += warn_if_option_path_is_relative("HiddenServiceDir",hs_line->value); + } + return n != 0; +} + +/* Validate options related to the scheduler. From the Schedulers list, the + * SchedulerTypes_ list is created with int values so once we select the + * scheduler, which can happen anytime at runtime, we don't have to parse + * strings and thus be quick. + * + * Return 0 on success else -1 and msg is set with an error message. */ +static int +options_validate_scheduler(or_options_t *options, char **msg) +{ + tor_assert(options); + tor_assert(msg); + + if (!options->Schedulers || smartlist_len(options->Schedulers) == 0) { + REJECT("Empty Schedulers list. Either remove the option so the defaults " + "can be used or set at least one value."); + } + /* Ok, we do have scheduler types, validate them. */ + options->SchedulerTypes_ = smartlist_new(); + SMARTLIST_FOREACH_BEGIN(options->Schedulers, const char *, type) { + int *sched_type; + if (!strcasecmp("KISTLite", type)) { + sched_type = tor_malloc_zero(sizeof(int)); + *sched_type = SCHEDULER_KIST_LITE; + smartlist_add(options->SchedulerTypes_, sched_type); + } else if (!strcasecmp("KIST", type)) { + sched_type = tor_malloc_zero(sizeof(int)); + *sched_type = SCHEDULER_KIST; + smartlist_add(options->SchedulerTypes_, sched_type); + } else if (!strcasecmp("Vanilla", type)) { + sched_type = tor_malloc_zero(sizeof(int)); + *sched_type = SCHEDULER_VANILLA; + smartlist_add(options->SchedulerTypes_, sched_type); + } else { + tor_asprintf(msg, "Unknown type %s in option Schedulers. " + "Possible values are KIST, KISTLite and Vanilla.", + escaped(type)); + return -1; + } + } SMARTLIST_FOREACH_END(type); + + if (options->KISTSockBufSizeFactor < 0) { + REJECT("KISTSockBufSizeFactor must be at least 0"); + } + + /* Don't need to validate that the Interval is less than anything because + * zero is valid and all negative values are valid. */ + if (options->KISTSchedRunInterval > KIST_SCHED_RUN_INTERVAL_MAX) { + tor_asprintf(msg, "KISTSchedRunInterval must not be more than %d (ms)", + KIST_SCHED_RUN_INTERVAL_MAX); + return -1; + } + + return 0; +} + +/* Validate options related to single onion services. + * Modifies some options that are incompatible with single onion services. + * On failure returns -1, and sets *msg to an error string. + * Returns 0 on success. */ +STATIC int +options_validate_single_onion(or_options_t *options, char **msg) +{ + /* The two single onion service options must have matching values. */ + if (options->HiddenServiceSingleHopMode && + !options->HiddenServiceNonAnonymousMode) { + REJECT("HiddenServiceSingleHopMode does not provide any server anonymity. " + "It must be used with HiddenServiceNonAnonymousMode set to 1."); + } + if (options->HiddenServiceNonAnonymousMode && + !options->HiddenServiceSingleHopMode) { + REJECT("HiddenServiceNonAnonymousMode does not provide any server " + "anonymity. It must be used with HiddenServiceSingleHopMode set to " + "1."); + } + + /* Now that we've checked that the two options are consistent, we can safely + * call the rend_service_* functions that abstract these options. */ + + /* If you run an anonymous client with an active Single Onion service, the + * client loses anonymity. */ + const int client_port_set = (options->SocksPort_set || + options->TransPort_set || + options->NATDPort_set || + options->DNSPort_set || + options->HTTPTunnelPort_set); + if (rend_service_non_anonymous_mode_enabled(options) && client_port_set && + !options->Tor2webMode) { + REJECT("HiddenServiceNonAnonymousMode is incompatible with using Tor as " + "an anonymous client. Please set Socks/Trans/NATD/DNSPort to 0, or " + "revert HiddenServiceNonAnonymousMode to 0."); + } + + /* If you run a hidden service in non-anonymous mode, the hidden service + * loses anonymity, even if SOCKSPort / Tor2web mode isn't used. */ + if (!rend_service_non_anonymous_mode_enabled(options) && + options->RendConfigLines && options->Tor2webMode) { + REJECT("Non-anonymous (Tor2web) mode is incompatible with using Tor as a " + "hidden service. Please remove all HiddenServiceDir lines, or use " + "a version of tor compiled without --enable-tor2web-mode, or use " + "HiddenServiceNonAnonymousMode."); + } + + if (rend_service_allow_non_anonymous_connection(options) + && options->UseEntryGuards) { + /* Single Onion services only use entry guards when uploading descriptors; + * all other connections are one-hop. Further, Single Onions causes the + * hidden service code to do things which break the path bias + * detector, and it's far easier to turn off entry guards (and + * thus the path bias detector with it) than to figure out how to + * make path bias compatible with single onions. + */ + log_notice(LD_CONFIG, + "HiddenServiceSingleHopMode is enabled; disabling " + "UseEntryGuards."); + options->UseEntryGuards = 0; + } + + return 0; +} + +/** Return 0 if every setting in options is reasonable, is a + * permissible transition from old_options, and none of the + * testing-only settings differ from default_options unless in + * testing mode. Else return -1. Should have no side effects, except for + * normalizing the contents of options. + * + * On error, tor_strdup an error explanation into *msg. + * + * XXX + * If from_setconf, we were called by the controller, and our + * Log line should stay empty. If it's 0, then give us a default log + * if there are no logs defined. + */ +STATIC int +options_validate(or_options_t *old_options, or_options_t *options, + or_options_t *default_options, int from_setconf, char **msg) +{ + int i; + config_line_t *cl; + const char *uname = get_uname(); + int n_ports=0; + int world_writable_control_socket=0; + + tor_assert(msg); + *msg = NULL; + + if (parse_ports(options, 1, msg, &n_ports, + &world_writable_control_socket) < 0) + return -1; + + /* Set UseEntryGuards from the configured value, before we check it below. + * We change UseEntryGuards when it's incompatible with other options, + * but leave UseEntryGuards_option with the original value. + * Always use the value of UseEntryGuards, not UseEntryGuards_option. */ + options->UseEntryGuards = options->UseEntryGuards_option; + + if (warn_about_relative_paths(options) && options->RunAsDaemon) { + REJECT("You have specified at least one relative path (see above) " + "with the RunAsDaemon option. RunAsDaemon is not compatible " + "with relative paths."); + } + + if (server_mode(options) && + (!strcmpstart(uname, "Windows 95") || + !strcmpstart(uname, "Windows 98") || + !strcmpstart(uname, "Windows Me"))) { + log_warn(LD_CONFIG, "Tor is running as a server, but you are " + "running %s; this probably won't work. See " + "https://www.torproject.org/docs/faq.html#BestOSForRelay " + "for details.", uname); + } + + if (parse_outbound_addresses(options, 1, msg) < 0) + return -1; + + if (validate_data_directories(options)<0) + REJECT("Invalid DataDirectory"); + + if (options->Nickname == NULL) { + if (server_mode(options)) { + options->Nickname = tor_strdup(UNNAMED_ROUTER_NICKNAME); + } + } else { + if (!is_legal_nickname(options->Nickname)) { + tor_asprintf(msg, + "Nickname '%s', nicknames must be between 1 and 19 characters " + "inclusive, and must contain only the characters [a-zA-Z0-9].", + options->Nickname); + return -1; + } + } + + if (server_mode(options) && !options->ContactInfo) + log_notice(LD_CONFIG, "Your ContactInfo config option is not set. " + "Please consider setting it, so we can contact you if your server is " + "misconfigured or something else goes wrong."); + + /* Special case on first boot if no Log options are given. */ + if (!options->Logs && !options->RunAsDaemon && !from_setconf) { + if (quiet_level == 0) + config_line_append(&options->Logs, "Log", "notice stdout"); + else if (quiet_level == 1) + config_line_append(&options->Logs, "Log", "warn stdout"); + } + + /* Validate the tor_log(s) */ + if (options_init_logs(old_options, options, 1)<0) + REJECT("Failed to validate Log options. See logs for details."); + + if (authdir_mode(options)) { + /* confirm that our address isn't broken, so we can complain now */ + uint32_t tmp; + if (resolve_my_address(LOG_WARN, options, &tmp, NULL, NULL) < 0) + REJECT("Failed to resolve/guess local address. See logs for details."); + } + + if (server_mode(options) && options->RendConfigLines) + log_warn(LD_CONFIG, + "Tor is currently configured as a relay and a hidden service. " + "That's not very secure: you should probably run your hidden service " + "in a separate Tor process, at least -- see " + "https://trac.torproject.org/8742"); + + /* XXXX require that the only port not be DirPort? */ + /* XXXX require that at least one port be listened-upon. */ + if (n_ports == 0 && !options->RendConfigLines) + log_warn(LD_CONFIG, + "SocksPort, TransPort, NATDPort, DNSPort, and ORPort are all " + "undefined, and there aren't any hidden services configured. " + "Tor will still run, but probably won't do anything."); + + options->TransProxyType_parsed = TPT_DEFAULT; +#ifdef USE_TRANSPARENT + if (options->TransProxyType) { + if (!strcasecmp(options->TransProxyType, "default")) { + options->TransProxyType_parsed = TPT_DEFAULT; + } else if (!strcasecmp(options->TransProxyType, "pf-divert")) { +#if !defined(OpenBSD) && !defined( DARWIN ) + /* Later versions of OS X have pf */ + REJECT("pf-divert is a OpenBSD-specific " + "and OS X/Darwin-specific feature."); +#else + options->TransProxyType_parsed = TPT_PF_DIVERT; +#endif /* !defined(OpenBSD) && !defined( DARWIN ) */ + } else if (!strcasecmp(options->TransProxyType, "tproxy")) { +#if !defined(__linux__) + REJECT("TPROXY is a Linux-specific feature."); +#else + options->TransProxyType_parsed = TPT_TPROXY; +#endif + } else if (!strcasecmp(options->TransProxyType, "ipfw")) { +#ifndef KERNEL_MAY_SUPPORT_IPFW + /* Earlier versions of OS X have ipfw */ + REJECT("ipfw is a FreeBSD-specific " + "and OS X/Darwin-specific feature."); +#else + options->TransProxyType_parsed = TPT_IPFW; +#endif /* !defined(KERNEL_MAY_SUPPORT_IPFW) */ + } else { + REJECT("Unrecognized value for TransProxyType"); + } + + if (strcasecmp(options->TransProxyType, "default") && + !options->TransPort_set) { + REJECT("Cannot use TransProxyType without any valid TransPort."); + } + } +#else /* !(defined(USE_TRANSPARENT)) */ + if (options->TransPort_set) + REJECT("TransPort is disabled in this build."); +#endif /* defined(USE_TRANSPARENT) */ + + if (options->TokenBucketRefillInterval <= 0 + || options->TokenBucketRefillInterval > 1000) { + REJECT("TokenBucketRefillInterval must be between 1 and 1000 inclusive."); + } + + if (options->ExcludeExitNodes || options->ExcludeNodes) { + options->ExcludeExitNodesUnion_ = routerset_new(); + routerset_union(options->ExcludeExitNodesUnion_,options->ExcludeExitNodes); + routerset_union(options->ExcludeExitNodesUnion_,options->ExcludeNodes); + } + + if (options->NodeFamilies) { + options->NodeFamilySets = smartlist_new(); + for (cl = options->NodeFamilies; cl; cl = cl->next) { + routerset_t *rs = routerset_new(); + if (routerset_parse(rs, cl->value, cl->key) == 0) { + smartlist_add(options->NodeFamilySets, rs); + } else { + routerset_free(rs); + } + } + } + + if (options->ExcludeNodes && options->StrictNodes) { + COMPLAIN("You have asked to exclude certain relays from all positions " + "in your circuits. Expect hidden services and other Tor " + "features to be broken in unpredictable ways."); + } + + for (cl = options->RecommendedPackages; cl; cl = cl->next) { + if (! validate_recommended_package_line(cl->value)) { + log_warn(LD_CONFIG, "Invalid RecommendedPackage line %s will be ignored", + escaped(cl->value)); + } + } + + if (options->AuthoritativeDir) { + if (!options->ContactInfo && !options->TestingTorNetwork) + REJECT("Authoritative directory servers must set ContactInfo"); + if (!options->RecommendedClientVersions) + options->RecommendedClientVersions = + config_lines_dup(options->RecommendedVersions); + if (!options->RecommendedServerVersions) + options->RecommendedServerVersions = + config_lines_dup(options->RecommendedVersions); + if (options->VersioningAuthoritativeDir && + (!options->RecommendedClientVersions || + !options->RecommendedServerVersions)) + REJECT("Versioning authoritative dir servers must set " + "Recommended*Versions."); + if (options->UseEntryGuards) { + log_info(LD_CONFIG, "Authoritative directory servers can't set " + "UseEntryGuards. Disabling."); + options->UseEntryGuards = 0; + } + if (!options->DownloadExtraInfo && authdir_mode_v3(options)) { + log_info(LD_CONFIG, "Authoritative directories always try to download " + "extra-info documents. Setting DownloadExtraInfo."); + options->DownloadExtraInfo = 1; + } + if (!(options->BridgeAuthoritativeDir || + options->V3AuthoritativeDir)) + REJECT("AuthoritativeDir is set, but none of " + "(Bridge/V3)AuthoritativeDir is set."); + /* If we have a v3bandwidthsfile and it's broken, complain on startup */ + if (options->V3BandwidthsFile && !old_options) { + dirserv_read_measured_bandwidths(options->V3BandwidthsFile, NULL); + } + /* same for guardfraction file */ + if (options->GuardfractionFile && !old_options) { + dirserv_read_guardfraction_file(options->GuardfractionFile, NULL); + } + } + + if (options->AuthoritativeDir && !options->DirPort_set) + REJECT("Running as authoritative directory, but no DirPort set."); + + if (options->AuthoritativeDir && !options->ORPort_set) + REJECT("Running as authoritative directory, but no ORPort set."); + + if (options->AuthoritativeDir && options->ClientOnly) + REJECT("Running as authoritative directory, but ClientOnly also set."); + + if (options->FetchDirInfoExtraEarly && !options->FetchDirInfoEarly) + REJECT("FetchDirInfoExtraEarly requires that you also set " + "FetchDirInfoEarly"); + + if (options->ConnLimit <= 0) { + tor_asprintf(msg, + "ConnLimit must be greater than 0, but was set to %d", + options->ConnLimit); + return -1; + } + + if (options->PathsNeededToBuildCircuits >= 0.0) { + if (options->PathsNeededToBuildCircuits < 0.25) { + log_warn(LD_CONFIG, "PathsNeededToBuildCircuits is too low. Increasing " + "to 0.25"); + options->PathsNeededToBuildCircuits = 0.25; + } else if (options->PathsNeededToBuildCircuits > 0.95) { + log_warn(LD_CONFIG, "PathsNeededToBuildCircuits is too high. Decreasing " + "to 0.95"); + options->PathsNeededToBuildCircuits = 0.95; + } + } + + if (options->MaxClientCircuitsPending <= 0 || + options->MaxClientCircuitsPending > MAX_MAX_CLIENT_CIRCUITS_PENDING) { + tor_asprintf(msg, + "MaxClientCircuitsPending must be between 1 and %d, but " + "was set to %d", MAX_MAX_CLIENT_CIRCUITS_PENDING, + options->MaxClientCircuitsPending); + return -1; + } + + if (validate_ports_csv(options->FirewallPorts, "FirewallPorts", msg) < 0) + return -1; + + if (validate_ports_csv(options->LongLivedPorts, "LongLivedPorts", msg) < 0) + return -1; + + if (validate_ports_csv(options->RejectPlaintextPorts, + "RejectPlaintextPorts", msg) < 0) + return -1; + + if (validate_ports_csv(options->WarnPlaintextPorts, + "WarnPlaintextPorts", msg) < 0) + return -1; + + if (options->FascistFirewall && !options->ReachableAddresses) { + if (options->FirewallPorts && smartlist_len(options->FirewallPorts)) { + /* We already have firewall ports set, so migrate them to + * ReachableAddresses, which will set ReachableORAddresses and + * ReachableDirAddresses if they aren't set explicitly. */ + smartlist_t *instead = smartlist_new(); + config_line_t *new_line = tor_malloc_zero(sizeof(config_line_t)); + new_line->key = tor_strdup("ReachableAddresses"); + /* If we're configured with the old format, we need to prepend some + * open ports. */ + SMARTLIST_FOREACH(options->FirewallPorts, const char *, portno, + { + int p = atoi(portno); + if (p<0) continue; + smartlist_add_asprintf(instead, "*:%d", p); + }); + new_line->value = smartlist_join_strings(instead,",",0,NULL); + /* These have been deprecated since 0.1.1.5-alpha-cvs */ + log_notice(LD_CONFIG, + "Converting FascistFirewall and FirewallPorts " + "config options to new format: \"ReachableAddresses %s\"", + new_line->value); + options->ReachableAddresses = new_line; + SMARTLIST_FOREACH(instead, char *, cp, tor_free(cp)); + smartlist_free(instead); + } else { + /* We do not have FirewallPorts set, so add 80 to + * ReachableDirAddresses, and 443 to ReachableORAddresses. */ + if (!options->ReachableDirAddresses) { + config_line_t *new_line = tor_malloc_zero(sizeof(config_line_t)); + new_line->key = tor_strdup("ReachableDirAddresses"); + new_line->value = tor_strdup("*:80"); + options->ReachableDirAddresses = new_line; + log_notice(LD_CONFIG, "Converting FascistFirewall config option " + "to new format: \"ReachableDirAddresses *:80\""); + } + if (!options->ReachableORAddresses) { + config_line_t *new_line = tor_malloc_zero(sizeof(config_line_t)); + new_line->key = tor_strdup("ReachableORAddresses"); + new_line->value = tor_strdup("*:443"); + options->ReachableORAddresses = new_line; + log_notice(LD_CONFIG, "Converting FascistFirewall config option " + "to new format: \"ReachableORAddresses *:443\""); + } + } + } + + /* Terminate Reachable*Addresses with reject * + */ + for (i=0; i<3; i++) { + config_line_t **linep = + (i==0) ? &options->ReachableAddresses : + (i==1) ? &options->ReachableORAddresses : + &options->ReachableDirAddresses; + if (!*linep) + continue; + /* We need to end with a reject *:*, not an implicit accept *:* */ + for (;;) { + linep = &((*linep)->next); + if (!*linep) { + *linep = tor_malloc_zero(sizeof(config_line_t)); + (*linep)->key = tor_strdup( + (i==0) ? "ReachableAddresses" : + (i==1) ? "ReachableORAddresses" : + "ReachableDirAddresses"); + (*linep)->value = tor_strdup("reject *:*"); + break; + } + } + } + + if ((options->ReachableAddresses || + options->ReachableORAddresses || + options->ReachableDirAddresses || + options->ClientUseIPv4 == 0) && + server_mode(options)) + REJECT("Servers must be able to freely connect to the rest " + "of the Internet, so they must not set Reachable*Addresses " + "or FascistFirewall or FirewallPorts or ClientUseIPv4 0."); + + if (options->UseBridges && + server_mode(options)) + REJECT("Servers must be able to freely connect to the rest " + "of the Internet, so they must not set UseBridges."); + + /* If both of these are set, we'll end up with funny behavior where we + * demand enough entrynodes be up and running else we won't build + * circuits, yet we never actually use them. */ + if (options->UseBridges && options->EntryNodes) + REJECT("You cannot set both UseBridges and EntryNodes."); + + /* If we have UseBridges as 1 and UseEntryGuards as 0, we end up bypassing + * the use of bridges */ + if (options->UseBridges && !options->UseEntryGuards) + REJECT("Setting UseBridges requires also setting UseEntryGuards."); + + options->MaxMemInQueues = + compute_real_max_mem_in_queues(options->MaxMemInQueues_raw, + server_mode(options)); + options->MaxMemInQueues_low_threshold = (options->MaxMemInQueues / 4) * 3; + + if (!options->SafeLogging || + !strcasecmp(options->SafeLogging, "0")) { + options->SafeLogging_ = SAFELOG_SCRUB_NONE; + } else if (!strcasecmp(options->SafeLogging, "relay")) { + options->SafeLogging_ = SAFELOG_SCRUB_RELAY; + } else if (!strcasecmp(options->SafeLogging, "1")) { + options->SafeLogging_ = SAFELOG_SCRUB_ALL; + } else { + tor_asprintf(msg, + "Unrecognized value '%s' in SafeLogging", + escaped(options->SafeLogging)); + return -1; + } + + if (compute_publishserverdescriptor(options) < 0) { + tor_asprintf(msg, "Unrecognized value in PublishServerDescriptor"); + return -1; + } + + if ((options->BridgeRelay + || options->PublishServerDescriptor_ & BRIDGE_DIRINFO) + && (options->PublishServerDescriptor_ & V3_DIRINFO)) { + REJECT("Bridges are not supposed to publish router descriptors to the " + "directory authorities. Please correct your " + "PublishServerDescriptor line."); + } + + if (options->BridgeRelay && options->DirPort_set) { + log_warn(LD_CONFIG, "Can't set a DirPort on a bridge relay; disabling " + "DirPort"); + config_free_lines(options->DirPort_lines); + options->DirPort_lines = NULL; + options->DirPort_set = 0; + } + + if (server_mode(options) && options->ConnectionPadding != -1) { + REJECT("Relays must use 'auto' for the ConnectionPadding setting."); + } + + if (server_mode(options) && options->ReducedConnectionPadding != 0) { + REJECT("Relays cannot set ReducedConnectionPadding. "); + } + + if (options->BridgeDistribution) { + if (!options->BridgeRelay) { + REJECT("You set BridgeDistribution, but you didn't set BridgeRelay!"); + } + if (check_bridge_distribution_setting(options->BridgeDistribution) < 0) { + REJECT("Invalid BridgeDistribution value."); + } + } + + if (options->MinUptimeHidServDirectoryV2 < 0) { + log_warn(LD_CONFIG, "MinUptimeHidServDirectoryV2 option must be at " + "least 0 seconds. Changing to 0."); + options->MinUptimeHidServDirectoryV2 = 0; + } + + const int min_rendpostperiod = + options->TestingTorNetwork ? + MIN_REND_POST_PERIOD_TESTING : MIN_REND_POST_PERIOD; + if (options->RendPostPeriod < min_rendpostperiod) { + log_warn(LD_CONFIG, "RendPostPeriod option is too short; " + "raising to %d seconds.", min_rendpostperiod); + options->RendPostPeriod = min_rendpostperiod; + } + + if (options->RendPostPeriod > MAX_DIR_PERIOD) { + log_warn(LD_CONFIG, "RendPostPeriod is too large; clipping to %ds.", + MAX_DIR_PERIOD); + options->RendPostPeriod = MAX_DIR_PERIOD; + } + + /* Check the Single Onion Service options */ + if (options_validate_single_onion(options, msg) < 0) + return -1; + + if (options->CircuitsAvailableTimeout > MAX_CIRCS_AVAILABLE_TIME) { + // options_t is immutable for new code (the above code is older), + // so just make the user fix the value themselves rather than + // silently keep a shadow value lower than what they asked for. + REJECT("CircuitsAvailableTimeout is too large. Max is 24 hours."); + } + +#ifdef ENABLE_TOR2WEB_MODE + if (options->Tor2webMode && options->UseEntryGuards) { + /* tor2web mode clients do not (and should not) use entry guards + * in any meaningful way. Further, tor2web mode causes the hidden + * service client code to do things which break the path bias + * detector, and it's far easier to turn off entry guards (and + * thus the path bias detector with it) than to figure out how to + * make a piece of code which cannot possibly help tor2web mode + * users compatible with tor2web mode. + */ + log_notice(LD_CONFIG, + "Tor2WebMode is enabled; disabling UseEntryGuards."); + options->UseEntryGuards = 0; + } +#endif /* defined(ENABLE_TOR2WEB_MODE) */ + + if (options->Tor2webRendezvousPoints && !options->Tor2webMode) { + REJECT("Tor2webRendezvousPoints cannot be set without Tor2webMode."); + } + + if (options->EntryNodes && !options->UseEntryGuards) { + REJECT("If EntryNodes is set, UseEntryGuards must be enabled."); + } + + if (!(options->UseEntryGuards) && + (options->RendConfigLines != NULL) && + !rend_service_allow_non_anonymous_connection(options)) { + log_warn(LD_CONFIG, + "UseEntryGuards is disabled, but you have configured one or more " + "hidden services on this Tor instance. Your hidden services " + "will be very easy to locate using a well-known attack -- see " + "http://freehaven.net/anonbib/#hs-attack06 for details."); + } + + if (options->NumPrimaryGuards && options->NumEntryGuards && + options->NumEntryGuards > options->NumPrimaryGuards) { + REJECT("NumEntryGuards must not be greater than NumPrimaryGuards."); + } + + if (options->EntryNodes && + routerset_is_list(options->EntryNodes) && + (routerset_len(options->EntryNodes) == 1) && + (options->RendConfigLines != NULL)) { + tor_asprintf(msg, + "You have one single EntryNodes and at least one hidden service " + "configured. This is bad because it's very easy to locate your " + "entry guard which can then lead to the deanonymization of your " + "hidden service -- for more details, see " + "https://trac.torproject.org/projects/tor/ticket/14917. " + "For this reason, the use of one EntryNodes with an hidden " + "service is prohibited until a better solution is found."); + return -1; + } + + /* Inform the hidden service operator that pinning EntryNodes can possibly + * be harmful for the service anonymity. */ + if (options->EntryNodes && + routerset_is_list(options->EntryNodes) && + (options->RendConfigLines != NULL)) { + log_warn(LD_CONFIG, + "EntryNodes is set with multiple entries and at least one " + "hidden service is configured. Pinning entry nodes can possibly " + "be harmful to the service anonymity. Because of this, we " + "recommend you either don't do that or make sure you know what " + "you are doing. For more details, please look at " + "https://trac.torproject.org/projects/tor/ticket/21155."); + } + + /* Single Onion Services: non-anonymous hidden services */ + if (rend_service_non_anonymous_mode_enabled(options)) { + log_warn(LD_CONFIG, + "HiddenServiceNonAnonymousMode is set. Every hidden service on " + "this tor instance is NON-ANONYMOUS. If " + "the HiddenServiceNonAnonymousMode option is changed, Tor will " + "refuse to launch hidden services from the same directories, to " + "protect your anonymity against config errors. This setting is " + "for experimental use only."); + } + + if (!options->LearnCircuitBuildTimeout && options->CircuitBuildTimeout && + options->CircuitBuildTimeout < RECOMMENDED_MIN_CIRCUIT_BUILD_TIMEOUT) { + log_warn(LD_CONFIG, + "CircuitBuildTimeout is shorter (%d seconds) than the recommended " + "minimum (%d seconds), and LearnCircuitBuildTimeout is disabled. " + "If tor isn't working, raise this value or enable " + "LearnCircuitBuildTimeout.", + options->CircuitBuildTimeout, + RECOMMENDED_MIN_CIRCUIT_BUILD_TIMEOUT ); + } else if (!options->LearnCircuitBuildTimeout && + !options->CircuitBuildTimeout) { + int severity = LOG_NOTICE; + /* Be a little quieter if we've deliberately disabled + * LearnCircuitBuildTimeout. */ + if (circuit_build_times_disabled_(options, 1)) { + severity = LOG_INFO; + } + log_fn(severity, LD_CONFIG, "You disabled LearnCircuitBuildTimeout, but " + "didn't specify a CircuitBuildTimeout. I'll pick a plausible " + "default."); + } + + if (options->PathBiasNoticeRate > 1.0) { + tor_asprintf(msg, + "PathBiasNoticeRate is too high. " + "It must be between 0 and 1.0"); + return -1; + } + if (options->PathBiasWarnRate > 1.0) { + tor_asprintf(msg, + "PathBiasWarnRate is too high. " + "It must be between 0 and 1.0"); + return -1; + } + if (options->PathBiasExtremeRate > 1.0) { + tor_asprintf(msg, + "PathBiasExtremeRate is too high. " + "It must be between 0 and 1.0"); + return -1; + } + if (options->PathBiasNoticeUseRate > 1.0) { + tor_asprintf(msg, + "PathBiasNoticeUseRate is too high. " + "It must be between 0 and 1.0"); + return -1; + } + if (options->PathBiasExtremeUseRate > 1.0) { + tor_asprintf(msg, + "PathBiasExtremeUseRate is too high. " + "It must be between 0 and 1.0"); + return -1; + } + + if (options->MaxCircuitDirtiness < MIN_MAX_CIRCUIT_DIRTINESS) { + log_warn(LD_CONFIG, "MaxCircuitDirtiness option is too short; " + "raising to %d seconds.", MIN_MAX_CIRCUIT_DIRTINESS); + options->MaxCircuitDirtiness = MIN_MAX_CIRCUIT_DIRTINESS; + } + + if (options->MaxCircuitDirtiness > MAX_MAX_CIRCUIT_DIRTINESS) { + log_warn(LD_CONFIG, "MaxCircuitDirtiness option is too high; " + "setting to %d days.", MAX_MAX_CIRCUIT_DIRTINESS/86400); + options->MaxCircuitDirtiness = MAX_MAX_CIRCUIT_DIRTINESS; + } + + if (options->CircuitStreamTimeout && + options->CircuitStreamTimeout < MIN_CIRCUIT_STREAM_TIMEOUT) { + log_warn(LD_CONFIG, "CircuitStreamTimeout option is too short; " + "raising to %d seconds.", MIN_CIRCUIT_STREAM_TIMEOUT); + options->CircuitStreamTimeout = MIN_CIRCUIT_STREAM_TIMEOUT; + } + + if (options->HeartbeatPeriod && + options->HeartbeatPeriod < MIN_HEARTBEAT_PERIOD) { + log_warn(LD_CONFIG, "HeartbeatPeriod option is too short; " + "raising to %d seconds.", MIN_HEARTBEAT_PERIOD); + options->HeartbeatPeriod = MIN_HEARTBEAT_PERIOD; + } + + if (options->KeepalivePeriod < 1) + REJECT("KeepalivePeriod option must be positive."); + + if (ensure_bandwidth_cap(&options->BandwidthRate, + "BandwidthRate", msg) < 0) + return -1; + if (ensure_bandwidth_cap(&options->BandwidthBurst, + "BandwidthBurst", msg) < 0) + return -1; + if (ensure_bandwidth_cap(&options->MaxAdvertisedBandwidth, + "MaxAdvertisedBandwidth", msg) < 0) + return -1; + if (ensure_bandwidth_cap(&options->RelayBandwidthRate, + "RelayBandwidthRate", msg) < 0) + return -1; + if (ensure_bandwidth_cap(&options->RelayBandwidthBurst, + "RelayBandwidthBurst", msg) < 0) + return -1; + if (ensure_bandwidth_cap(&options->PerConnBWRate, + "PerConnBWRate", msg) < 0) + return -1; + if (ensure_bandwidth_cap(&options->PerConnBWBurst, + "PerConnBWBurst", msg) < 0) + return -1; + if (ensure_bandwidth_cap(&options->AuthDirFastGuarantee, + "AuthDirFastGuarantee", msg) < 0) + return -1; + if (ensure_bandwidth_cap(&options->AuthDirGuardBWGuarantee, + "AuthDirGuardBWGuarantee", msg) < 0) + return -1; + + if (options->RelayBandwidthRate && !options->RelayBandwidthBurst) + options->RelayBandwidthBurst = options->RelayBandwidthRate; + if (options->RelayBandwidthBurst && !options->RelayBandwidthRate) + options->RelayBandwidthRate = options->RelayBandwidthBurst; + + if (server_mode(options)) { + const unsigned required_min_bw = + public_server_mode(options) ? + RELAY_REQUIRED_MIN_BANDWIDTH : BRIDGE_REQUIRED_MIN_BANDWIDTH; + const char * const optbridge = + public_server_mode(options) ? "" : "bridge "; + if (options->BandwidthRate < required_min_bw) { + tor_asprintf(msg, + "BandwidthRate is set to %d bytes/second. " + "For %sservers, it must be at least %u.", + (int)options->BandwidthRate, optbridge, + required_min_bw); + return -1; + } else if (options->MaxAdvertisedBandwidth < + required_min_bw/2) { + tor_asprintf(msg, + "MaxAdvertisedBandwidth is set to %d bytes/second. " + "For %sservers, it must be at least %u.", + (int)options->MaxAdvertisedBandwidth, optbridge, + required_min_bw/2); + return -1; + } + if (options->RelayBandwidthRate && + options->RelayBandwidthRate < required_min_bw) { + tor_asprintf(msg, + "RelayBandwidthRate is set to %d bytes/second. " + "For %sservers, it must be at least %u.", + (int)options->RelayBandwidthRate, optbridge, + required_min_bw); + return -1; + } + } + + if (options->RelayBandwidthRate > options->RelayBandwidthBurst) + REJECT("RelayBandwidthBurst must be at least equal " + "to RelayBandwidthRate."); + + if (options->BandwidthRate > options->BandwidthBurst) + REJECT("BandwidthBurst must be at least equal to BandwidthRate."); + + /* if they set relaybandwidth* really high but left bandwidth* + * at the default, raise the defaults. */ + if (options->RelayBandwidthRate > options->BandwidthRate) + options->BandwidthRate = options->RelayBandwidthRate; + if (options->RelayBandwidthBurst > options->BandwidthBurst) + options->BandwidthBurst = options->RelayBandwidthBurst; + + if (accounting_parse_options(options, 1)<0) + REJECT("Failed to parse accounting options. See logs for details."); + + if (options->AccountingMax) { + if (options->RendConfigLines && server_mode(options)) { + log_warn(LD_CONFIG, "Using accounting with a hidden service and an " + "ORPort is risky: your hidden service(s) and your public " + "address will all turn off at the same time, which may alert " + "observers that they are being run by the same party."); + } else if (config_count_key(options->RendConfigLines, + "HiddenServiceDir") > 1) { + log_warn(LD_CONFIG, "Using accounting with multiple hidden services is " + "risky: they will all turn off at the same time, which may " + "alert observers that they are being run by the same party."); + } + } + + options->AccountingRule = ACCT_MAX; + if (options->AccountingRule_option) { + if (!strcmp(options->AccountingRule_option, "sum")) + options->AccountingRule = ACCT_SUM; + else if (!strcmp(options->AccountingRule_option, "max")) + options->AccountingRule = ACCT_MAX; + else if (!strcmp(options->AccountingRule_option, "in")) + options->AccountingRule = ACCT_IN; + else if (!strcmp(options->AccountingRule_option, "out")) + options->AccountingRule = ACCT_OUT; + else + REJECT("AccountingRule must be 'sum', 'max', 'in', or 'out'"); + } + + if (options->DirPort_set && !options->DirCache) { + REJECT("DirPort configured but DirCache disabled. DirPort requires " + "DirCache."); + } + + if (options->BridgeRelay && !options->DirCache) { + REJECT("We're a bridge but DirCache is disabled. BridgeRelay requires " + "DirCache."); + } + + if (server_mode(options)) { + char *dircache_msg = NULL; + if (have_enough_mem_for_dircache(options, 0, &dircache_msg)) { + log_warn(LD_CONFIG, "%s", dircache_msg); + tor_free(dircache_msg); + } + } + + if (options->HTTPProxy) { /* parse it now */ + if (tor_addr_port_lookup(options->HTTPProxy, + &options->HTTPProxyAddr, &options->HTTPProxyPort) < 0) + REJECT("HTTPProxy failed to parse or resolve. Please fix."); + if (options->HTTPProxyPort == 0) { /* give it a default */ + options->HTTPProxyPort = 80; + } + } + + if (options->HTTPProxyAuthenticator) { + if (strlen(options->HTTPProxyAuthenticator) >= 512) + REJECT("HTTPProxyAuthenticator is too long (>= 512 chars)."); + } + + if (options->HTTPSProxy) { /* parse it now */ + if (tor_addr_port_lookup(options->HTTPSProxy, + &options->HTTPSProxyAddr, &options->HTTPSProxyPort) <0) + REJECT("HTTPSProxy failed to parse or resolve. Please fix."); + if (options->HTTPSProxyPort == 0) { /* give it a default */ + options->HTTPSProxyPort = 443; + } + } + + if (options->HTTPSProxyAuthenticator) { + if (strlen(options->HTTPSProxyAuthenticator) >= 512) + REJECT("HTTPSProxyAuthenticator is too long (>= 512 chars)."); + } + + if (options->Socks4Proxy) { /* parse it now */ + if (tor_addr_port_lookup(options->Socks4Proxy, + &options->Socks4ProxyAddr, + &options->Socks4ProxyPort) <0) + REJECT("Socks4Proxy failed to parse or resolve. Please fix."); + if (options->Socks4ProxyPort == 0) { /* give it a default */ + options->Socks4ProxyPort = 1080; + } + } + + if (options->Socks5Proxy) { /* parse it now */ + if (tor_addr_port_lookup(options->Socks5Proxy, + &options->Socks5ProxyAddr, + &options->Socks5ProxyPort) <0) + REJECT("Socks5Proxy failed to parse or resolve. Please fix."); + if (options->Socks5ProxyPort == 0) { /* give it a default */ + options->Socks5ProxyPort = 1080; + } + } + + /* Check if more than one exclusive proxy type has been enabled. */ + if (!!options->Socks4Proxy + !!options->Socks5Proxy + + !!options->HTTPSProxy > 1) + REJECT("You have configured more than one proxy type. " + "(Socks4Proxy|Socks5Proxy|HTTPSProxy)"); + + /* Check if the proxies will give surprising behavior. */ + if (options->HTTPProxy && !(options->Socks4Proxy || + options->Socks5Proxy || + options->HTTPSProxy)) { + log_warn(LD_CONFIG, "HTTPProxy configured, but no SOCKS proxy or " + "HTTPS proxy configured. Watch out: this configuration will " + "proxy unencrypted directory connections only."); + } + + if (options->Socks5ProxyUsername) { + size_t len; + + len = strlen(options->Socks5ProxyUsername); + if (len < 1 || len > MAX_SOCKS5_AUTH_FIELD_SIZE) + REJECT("Socks5ProxyUsername must be between 1 and 255 characters."); + + if (!options->Socks5ProxyPassword) + REJECT("Socks5ProxyPassword must be included with Socks5ProxyUsername."); + + len = strlen(options->Socks5ProxyPassword); + if (len < 1 || len > MAX_SOCKS5_AUTH_FIELD_SIZE) + REJECT("Socks5ProxyPassword must be between 1 and 255 characters."); + } else if (options->Socks5ProxyPassword) + REJECT("Socks5ProxyPassword must be included with Socks5ProxyUsername."); + + if (options->HashedControlPassword) { + smartlist_t *sl = decode_hashed_passwords(options->HashedControlPassword); + if (!sl) { + REJECT("Bad HashedControlPassword: wrong length or bad encoding"); + } else { + SMARTLIST_FOREACH(sl, char*, cp, tor_free(cp)); + smartlist_free(sl); + } + } + + if (options->HashedControlSessionPassword) { + smartlist_t *sl = decode_hashed_passwords( + options->HashedControlSessionPassword); + if (!sl) { + REJECT("Bad HashedControlSessionPassword: wrong length or bad encoding"); + } else { + SMARTLIST_FOREACH(sl, char*, cp, tor_free(cp)); + smartlist_free(sl); + } + } + + if (options->OwningControllerProcess) { + const char *validate_pspec_msg = NULL; + if (tor_validate_process_specifier(options->OwningControllerProcess, + &validate_pspec_msg)) { + tor_asprintf(msg, "Bad OwningControllerProcess: %s", + validate_pspec_msg); + return -1; + } + } + + if ((options->ControlPort_set || world_writable_control_socket) && + !options->HashedControlPassword && + !options->HashedControlSessionPassword && + !options->CookieAuthentication) { + log_warn(LD_CONFIG, "Control%s is %s, but no authentication method " + "has been configured. This means that any program on your " + "computer can reconfigure your Tor. That's bad! You should " + "upgrade your Tor controller as soon as possible.", + options->ControlPort_set ? "Port" : "Socket", + options->ControlPort_set ? "open" : "world writable"); + } + + if (options->CookieAuthFileGroupReadable && !options->CookieAuthFile) { + log_warn(LD_CONFIG, "CookieAuthFileGroupReadable is set, but will have " + "no effect: you must specify an explicit CookieAuthFile to " + "have it group-readable."); + } + + if (options->MyFamily_lines && options->BridgeRelay) { + log_warn(LD_CONFIG, "Listing a family for a bridge relay is not " + "supported: it can reveal bridge fingerprints to censors. " + "You should also make sure you aren't listing this bridge's " + "fingerprint in any other MyFamily."); + } + if (normalize_nickname_list(&options->MyFamily, + options->MyFamily_lines, "MyFamily", msg)) + return -1; + for (cl = options->NodeFamilies; cl; cl = cl->next) { + routerset_t *rs = routerset_new(); + if (routerset_parse(rs, cl->value, cl->key)) { + routerset_free(rs); + return -1; + } + routerset_free(rs); + } + + if (validate_addr_policies(options, msg) < 0) + return -1; + + /* If FallbackDir is set, we don't UseDefaultFallbackDirs */ + if (options->UseDefaultFallbackDirs && options->FallbackDir) { + log_info(LD_CONFIG, "You have set UseDefaultFallbackDirs 1 and " + "FallbackDir(s). Ignoring UseDefaultFallbackDirs, and " + "using the FallbackDir(s) you have set."); + } + + if (validate_dir_servers(options, old_options) < 0) + REJECT("Directory authority/fallback line did not parse. See logs " + "for details."); + + if (options->UseBridges && !options->Bridges) + REJECT("If you set UseBridges, you must specify at least one bridge."); + + for (cl = options->Bridges; cl; cl = cl->next) { + bridge_line_t *bridge_line = parse_bridge_line(cl->value); + if (!bridge_line) + REJECT("Bridge line did not parse. See logs for details."); + bridge_line_free(bridge_line); + } + + for (cl = options->ClientTransportPlugin; cl; cl = cl->next) { + if (parse_transport_line(options, cl->value, 1, 0) < 0) + REJECT("Invalid client transport line. See logs for details."); + } + + for (cl = options->ServerTransportPlugin; cl; cl = cl->next) { + if (parse_transport_line(options, cl->value, 1, 1) < 0) + REJECT("Invalid server transport line. See logs for details."); + } + + if (options->ServerTransportPlugin && !server_mode(options)) { + log_notice(LD_GENERAL, "Tor is not configured as a relay but you specified" + " a ServerTransportPlugin line (%s). The ServerTransportPlugin " + "line will be ignored.", + escaped(options->ServerTransportPlugin->value)); + } + + for (cl = options->ServerTransportListenAddr; cl; cl = cl->next) { + /** If get_bindaddr_from_transport_listen_line() fails with + 'transport' being NULL, it means that something went wrong + while parsing the ServerTransportListenAddr line. */ + char *bindaddr = get_bindaddr_from_transport_listen_line(cl->value, NULL); + if (!bindaddr) + REJECT("ServerTransportListenAddr did not parse. See logs for details."); + tor_free(bindaddr); + } + + if (options->ServerTransportListenAddr && !options->ServerTransportPlugin) { + log_notice(LD_GENERAL, "You need at least a single managed-proxy to " + "specify a transport listen address. The " + "ServerTransportListenAddr line will be ignored."); + } + + for (cl = options->ServerTransportOptions; cl; cl = cl->next) { + /** If get_options_from_transport_options_line() fails with + 'transport' being NULL, it means that something went wrong + while parsing the ServerTransportOptions line. */ + smartlist_t *options_sl = + get_options_from_transport_options_line(cl->value, NULL); + if (!options_sl) + REJECT("ServerTransportOptions did not parse. See logs for details."); + + SMARTLIST_FOREACH(options_sl, char *, cp, tor_free(cp)); + smartlist_free(options_sl); + } + + if (options->ConstrainedSockets) { + /* If the user wants to constrain socket buffer use, make sure the desired + * limit is between MIN|MAX_TCPSOCK_BUFFER in k increments. */ + if (options->ConstrainedSockSize < MIN_CONSTRAINED_TCP_BUFFER || + options->ConstrainedSockSize > MAX_CONSTRAINED_TCP_BUFFER || + options->ConstrainedSockSize % 1024) { + tor_asprintf(msg, + "ConstrainedSockSize is invalid. Must be a value between %d and %d " + "in 1024 byte increments.", + MIN_CONSTRAINED_TCP_BUFFER, MAX_CONSTRAINED_TCP_BUFFER); + return -1; + } + if (options->DirPort_set) { + /* Providing cached directory entries while system TCP buffers are scarce + * will exacerbate the socket errors. Suggest that this be disabled. */ + COMPLAIN("You have requested constrained socket buffers while also " + "serving directory entries via DirPort. It is strongly " + "suggested that you disable serving directory requests when " + "system TCP buffer resources are scarce."); + } + } + + if (options->V3AuthVoteDelay + options->V3AuthDistDelay >= + options->V3AuthVotingInterval/2) { + /* + This doesn't work, but it seems like it should: + what code is preventing the interval being less than twice the lead-up? + if (options->TestingTorNetwork) { + if (options->V3AuthVoteDelay + options->V3AuthDistDelay >= + options->V3AuthVotingInterval) { + REJECT("V3AuthVoteDelay plus V3AuthDistDelay must be less than " + "V3AuthVotingInterval"); + } else { + COMPLAIN("V3AuthVoteDelay plus V3AuthDistDelay is more than half " + "V3AuthVotingInterval. This may lead to " + "consensus instability, particularly if clocks drift."); + } + } else { + */ + REJECT("V3AuthVoteDelay plus V3AuthDistDelay must be less than half " + "V3AuthVotingInterval"); + /* + } + */ + } + + if (options->V3AuthVoteDelay < MIN_VOTE_SECONDS) { + if (options->TestingTorNetwork) { + if (options->V3AuthVoteDelay < MIN_VOTE_SECONDS_TESTING) { + REJECT("V3AuthVoteDelay is way too low."); + } else { + COMPLAIN("V3AuthVoteDelay is very low. " + "This may lead to failure to vote for a consensus."); + } + } else { + REJECT("V3AuthVoteDelay is way too low."); + } + } + + if (options->V3AuthDistDelay < MIN_DIST_SECONDS) { + if (options->TestingTorNetwork) { + if (options->V3AuthDistDelay < MIN_DIST_SECONDS_TESTING) { + REJECT("V3AuthDistDelay is way too low."); + } else { + COMPLAIN("V3AuthDistDelay is very low. " + "This may lead to missing votes in a consensus."); + } + } else { + REJECT("V3AuthDistDelay is way too low."); + } + } + + if (options->V3AuthNIntervalsValid < 2) + REJECT("V3AuthNIntervalsValid must be at least 2."); + + if (options->V3AuthVotingInterval < MIN_VOTE_INTERVAL) { + if (options->TestingTorNetwork) { + if (options->V3AuthVotingInterval < MIN_VOTE_INTERVAL_TESTING) { + REJECT("V3AuthVotingInterval is insanely low."); + } else { + COMPLAIN("V3AuthVotingInterval is very low. " + "This may lead to failure to synchronise for a consensus."); + } + } else { + REJECT("V3AuthVotingInterval is insanely low."); + } + } else if (options->V3AuthVotingInterval > 24*60*60) { + REJECT("V3AuthVotingInterval is insanely high."); + } else if (((24*60*60) % options->V3AuthVotingInterval) != 0) { + COMPLAIN("V3AuthVotingInterval does not divide evenly into 24 hours."); + } + + if (hs_config_service_all(options, 1) < 0) + REJECT("Failed to configure rendezvous options. See logs for details."); + + /* Parse client-side authorization for hidden services. */ + if (rend_parse_service_authorization(options, 1) < 0) + REJECT("Failed to configure client authorization for hidden services. " + "See logs for details."); + + if (parse_virtual_addr_network(options->VirtualAddrNetworkIPv4, + AF_INET, 1, msg)<0) + return -1; + if (parse_virtual_addr_network(options->VirtualAddrNetworkIPv6, + AF_INET6, 1, msg)<0) + return -1; + + if (options->TestingTorNetwork && + !(options->DirAuthorities || + (options->AlternateDirAuthority && + options->AlternateBridgeAuthority))) { + REJECT("TestingTorNetwork may only be configured in combination with " + "a non-default set of DirAuthority or both of " + "AlternateDirAuthority and AlternateBridgeAuthority configured."); + } + +#define CHECK_DEFAULT(arg) \ + STMT_BEGIN \ + if (!options->TestingTorNetwork && \ + !options->UsingTestNetworkDefaults_ && \ + !config_is_same(&options_format,options, \ + default_options,#arg)) { \ + REJECT(#arg " may only be changed in testing Tor " \ + "networks!"); \ + } STMT_END + CHECK_DEFAULT(TestingV3AuthInitialVotingInterval); + CHECK_DEFAULT(TestingV3AuthInitialVoteDelay); + CHECK_DEFAULT(TestingV3AuthInitialDistDelay); + CHECK_DEFAULT(TestingV3AuthVotingStartOffset); + CHECK_DEFAULT(TestingAuthDirTimeToLearnReachability); + CHECK_DEFAULT(TestingEstimatedDescriptorPropagationTime); + CHECK_DEFAULT(TestingServerDownloadInitialDelay); + CHECK_DEFAULT(TestingClientDownloadInitialDelay); + CHECK_DEFAULT(TestingServerConsensusDownloadInitialDelay); + CHECK_DEFAULT(TestingClientConsensusDownloadInitialDelay); + CHECK_DEFAULT(TestingBridgeDownloadInitialDelay); + CHECK_DEFAULT(TestingBridgeBootstrapDownloadInitialDelay); + CHECK_DEFAULT(TestingClientMaxIntervalWithoutRequest); + CHECK_DEFAULT(TestingDirConnectionMaxStall); + CHECK_DEFAULT(TestingAuthKeyLifetime); + CHECK_DEFAULT(TestingLinkCertLifetime); + CHECK_DEFAULT(TestingSigningKeySlop); + CHECK_DEFAULT(TestingAuthKeySlop); + CHECK_DEFAULT(TestingLinkKeySlop); +#undef CHECK_DEFAULT + + if (!options->ClientDNSRejectInternalAddresses && + !(options->DirAuthorities || + (options->AlternateDirAuthority && options->AlternateBridgeAuthority))) + REJECT("ClientDNSRejectInternalAddresses used for default network."); + if (options->SigningKeyLifetime < options->TestingSigningKeySlop*2) + REJECT("SigningKeyLifetime is too short."); + if (options->TestingLinkCertLifetime < options->TestingAuthKeySlop*2) + REJECT("LinkCertLifetime is too short."); + if (options->TestingAuthKeyLifetime < options->TestingLinkKeySlop*2) + REJECT("TestingAuthKeyLifetime is too short."); + + if (options->TestingV3AuthInitialVotingInterval + < MIN_VOTE_INTERVAL_TESTING_INITIAL) { + REJECT("TestingV3AuthInitialVotingInterval is insanely low."); + } else if (((30*60) % options->TestingV3AuthInitialVotingInterval) != 0) { + REJECT("TestingV3AuthInitialVotingInterval does not divide evenly into " + "30 minutes."); + } + + if (options->TestingV3AuthInitialVoteDelay < MIN_VOTE_SECONDS_TESTING) { + REJECT("TestingV3AuthInitialVoteDelay is way too low."); + } + + if (options->TestingV3AuthInitialDistDelay < MIN_DIST_SECONDS_TESTING) { + REJECT("TestingV3AuthInitialDistDelay is way too low."); + } + + if (options->TestingV3AuthInitialVoteDelay + + options->TestingV3AuthInitialDistDelay >= + options->TestingV3AuthInitialVotingInterval) { + REJECT("TestingV3AuthInitialVoteDelay plus TestingV3AuthInitialDistDelay " + "must be less than TestingV3AuthInitialVotingInterval"); + } + + if (options->TestingV3AuthVotingStartOffset > + MIN(options->TestingV3AuthInitialVotingInterval, + options->V3AuthVotingInterval)) { + REJECT("TestingV3AuthVotingStartOffset is higher than the voting " + "interval."); + } else if (options->TestingV3AuthVotingStartOffset < 0) { + REJECT("TestingV3AuthVotingStartOffset must be non-negative."); + } + + if (options->TestingAuthDirTimeToLearnReachability < 0) { + REJECT("TestingAuthDirTimeToLearnReachability must be non-negative."); + } else if (options->TestingAuthDirTimeToLearnReachability > 2*60*60) { + COMPLAIN("TestingAuthDirTimeToLearnReachability is insanely high."); + } + + if (options->TestingEstimatedDescriptorPropagationTime < 0) { + REJECT("TestingEstimatedDescriptorPropagationTime must be non-negative."); + } else if (options->TestingEstimatedDescriptorPropagationTime > 60*60) { + COMPLAIN("TestingEstimatedDescriptorPropagationTime is insanely high."); + } + + if (options->TestingClientMaxIntervalWithoutRequest < 1) { + REJECT("TestingClientMaxIntervalWithoutRequest is way too low."); + } else if (options->TestingClientMaxIntervalWithoutRequest > 3600) { + COMPLAIN("TestingClientMaxIntervalWithoutRequest is insanely high."); + } + + if (options->TestingDirConnectionMaxStall < 5) { + REJECT("TestingDirConnectionMaxStall is way too low."); + } else if (options->TestingDirConnectionMaxStall > 3600) { + COMPLAIN("TestingDirConnectionMaxStall is insanely high."); + } + + if (options->ClientBootstrapConsensusMaxInProgressTries < 1) { + REJECT("ClientBootstrapConsensusMaxInProgressTries must be greater " + "than 0."); + } else if (options->ClientBootstrapConsensusMaxInProgressTries + > 100) { + COMPLAIN("ClientBootstrapConsensusMaxInProgressTries is insanely " + "high."); + } + + if (options->TestingEnableConnBwEvent && + !options->TestingTorNetwork && !options->UsingTestNetworkDefaults_) { + REJECT("TestingEnableConnBwEvent may only be changed in testing " + "Tor networks!"); + } + + if (options->TestingEnableCellStatsEvent && + !options->TestingTorNetwork && !options->UsingTestNetworkDefaults_) { + REJECT("TestingEnableCellStatsEvent may only be changed in testing " + "Tor networks!"); + } + + if (options->TestingTorNetwork) { + log_warn(LD_CONFIG, "TestingTorNetwork is set. This will make your node " + "almost unusable in the public Tor network, and is " + "therefore only advised if you are building a " + "testing Tor network!"); + } + + if (options->AccelName && !options->HardwareAccel) + options->HardwareAccel = 1; + if (options->AccelDir && !options->AccelName) + REJECT("Can't use hardware crypto accelerator dir without engine name."); + + if (options->PublishServerDescriptor) + SMARTLIST_FOREACH(options->PublishServerDescriptor, const char *, pubdes, { + if (!strcmp(pubdes, "1") || !strcmp(pubdes, "0")) + if (smartlist_len(options->PublishServerDescriptor) > 1) { + COMPLAIN("You have passed a list of multiple arguments to the " + "PublishServerDescriptor option that includes 0 or 1. " + "0 or 1 should only be used as the sole argument. " + "This configuration will be rejected in a future release."); + break; + } + }); + + if (options->BridgeRelay == 1 && ! options->ORPort_set) + REJECT("BridgeRelay is 1, ORPort is not set. This is an invalid " + "combination."); + + if (options_validate_scheduler(options, msg) < 0) { + return -1; + } + + return 0; +} + +#undef REJECT +#undef COMPLAIN + +/* Given the value that the user has set for MaxMemInQueues, compute the + * actual maximum value. We clip this value if it's too low, and autodetect + * it if it's set to 0. */ +STATIC uint64_t +compute_real_max_mem_in_queues(const uint64_t val, int log_guess) +{ + uint64_t result; + + if (val == 0) { +#define ONE_GIGABYTE (UINT64_C(1) << 30) +#define ONE_MEGABYTE (UINT64_C(1) << 20) + /* The user didn't pick a memory limit. Choose a very large one + * that is still smaller than the system memory */ + static int notice_sent = 0; + size_t ram = 0; + if (get_total_system_memory(&ram) < 0) { + /* We couldn't determine our total system memory! */ +#if SIZEOF_VOID_P >= 8 + /* 64-bit system. Let's hope for 8 GB. */ + result = 8 * ONE_GIGABYTE; +#else + /* (presumably) 32-bit system. Let's hope for 1 GB. */ + result = ONE_GIGABYTE; +#endif /* SIZEOF_VOID_P >= 8 */ + } else { + /* We detected the amount of memory available. */ + uint64_t avail = 0; + +#if SIZEOF_SIZE_T > 4 +/* On a 64-bit platform, we consider 8GB "very large". */ +#define RAM_IS_VERY_LARGE(x) ((x) >= (8 * ONE_GIGABYTE)) +#else +/* On a 32-bit platform, we can't have 8GB of ram. */ +#define RAM_IS_VERY_LARGE(x) (0) +#endif + + if (RAM_IS_VERY_LARGE(ram)) { + /* If we have 8 GB, or more, RAM available, we set the MaxMemInQueues + * to 0.4 * RAM. The idea behind this value is that the amount of RAM + * is more than enough for a single relay and should allow the relay + * operator to run two relays if they have additional bandwidth + * available. + */ + avail = (ram / 5) * 2; + } else { + /* If we have less than 8 GB of RAM available, we use the "old" default + * for MaxMemInQueues of 0.75 * RAM. + */ + avail = (ram / 4) * 3; + } + + /* Make sure it's in range from 0.25 GB to 8 GB for 64-bit and 0.25 to 2 + * GB for 32-bit. */ + if (avail > MAX_DEFAULT_MEMORY_QUEUE_SIZE) { + /* If you want to use more than this much RAM, you need to configure + it yourself */ + result = MAX_DEFAULT_MEMORY_QUEUE_SIZE; + } else if (avail < ONE_GIGABYTE / 4) { + result = ONE_GIGABYTE / 4; + } else { + result = avail; + } + } + if (log_guess && ! notice_sent) { + log_notice(LD_CONFIG, "%sMaxMemInQueues is set to %"PRIu64" MB. " + "You can override this by setting MaxMemInQueues by hand.", + ram ? "Based on detected system memory, " : "", + (result / ONE_MEGABYTE)); + notice_sent = 1; + } + return result; + } else if (val < ONE_GIGABYTE / 4) { + log_warn(LD_CONFIG, "MaxMemInQueues must be at least 256 MB for now. " + "Ideally, have it as large as you can afford."); + return ONE_GIGABYTE / 4; + } else { + /* The value was fine all along */ + return val; + } +} + +/* If we have less than 300 MB suggest disabling dircache */ +#define DIRCACHE_MIN_MEM_MB 300 +#define DIRCACHE_MIN_MEM_BYTES (DIRCACHE_MIN_MEM_MB*ONE_MEGABYTE) +#define STRINGIFY(val) #val + +/** Create a warning message for emitting if we are a dircache but may not have + * enough system memory, or if we are not a dircache but probably should be. + * Return -1 when a message is returned in *msg*, else return 0. */ +STATIC int +have_enough_mem_for_dircache(const or_options_t *options, size_t total_mem, + char **msg) +{ + *msg = NULL; + /* XXX We should possibly be looking at MaxMemInQueues here + * unconditionally. Or we should believe total_mem unconditionally. */ + if (total_mem == 0) { + if (get_total_system_memory(&total_mem) < 0) { + total_mem = options->MaxMemInQueues >= SIZE_MAX ? + SIZE_MAX : (size_t)options->MaxMemInQueues; + } + } + if (options->DirCache) { + if (total_mem < DIRCACHE_MIN_MEM_BYTES) { + if (options->BridgeRelay) { + tor_asprintf(msg, "Running a Bridge with less than %d MB of memory " + "is not recommended.", DIRCACHE_MIN_MEM_MB); + } else { + tor_asprintf(msg, "Being a directory cache (default) with less than " + "%d MB of memory is not recommended and may consume " + "most of the available resources. Consider disabling " + "this functionality by setting the DirCache option " + "to 0.", DIRCACHE_MIN_MEM_MB); + } + } + } else { + if (total_mem >= DIRCACHE_MIN_MEM_BYTES) { + *msg = tor_strdup("DirCache is disabled and we are configured as a " + "relay. This may disqualify us from becoming a guard in the " + "future."); + } + } + return *msg == NULL ? 0 : -1; +} +#undef STRINGIFY + +/** Helper: return true iff s1 and s2 are both NULL, or both non-NULL + * equal strings. */ +static int +opt_streq(const char *s1, const char *s2) +{ + return 0 == strcmp_opt(s1, s2); +} + +/** Check if any of the previous options have changed but aren't allowed to. */ +static int +options_transition_allowed(const or_options_t *old, + const or_options_t *new_val, + char **msg) +{ + if (!old) + return 0; + +#define BAD_CHANGE_TO(opt, how) do { \ + *msg = tor_strdup("While Tor is running"how", changing " #opt \ + " is not allowed"); \ + return -1; \ + } while (0) + +#define NO_CHANGE_BOOL(opt) \ + if (! CFG_EQ_BOOL(old, new_val, opt)) BAD_CHANGE_TO(opt,"") +#define NO_CHANGE_INT(opt) \ + if (! CFG_EQ_INT(old, new_val, opt)) BAD_CHANGE_TO(opt,"") +#define NO_CHANGE_STRING(opt) \ + if (! CFG_EQ_STRING(old, new_val, opt)) BAD_CHANGE_TO(opt,"") + + NO_CHANGE_STRING(PidFile); + NO_CHANGE_BOOL(RunAsDaemon); + NO_CHANGE_BOOL(Sandbox); + NO_CHANGE_STRING(DataDirectory); + NO_CHANGE_STRING(KeyDirectory); + NO_CHANGE_STRING(CacheDirectory); + NO_CHANGE_STRING(User); + NO_CHANGE_BOOL(KeepBindCapabilities); + NO_CHANGE_STRING(SyslogIdentityTag); + NO_CHANGE_STRING(AndroidIdentityTag); + NO_CHANGE_BOOL(HardwareAccel); + NO_CHANGE_STRING(AccelName); + NO_CHANGE_STRING(AccelDir); + NO_CHANGE_BOOL(TestingTorNetwork); + NO_CHANGE_BOOL(DisableAllSwap); + NO_CHANGE_INT(TokenBucketRefillInterval); + NO_CHANGE_BOOL(HiddenServiceSingleHopMode); + NO_CHANGE_BOOL(HiddenServiceNonAnonymousMode); + NO_CHANGE_BOOL(DisableDebuggerAttachment); + NO_CHANGE_BOOL(NoExec); + NO_CHANGE_INT(OwningControllerFD); + NO_CHANGE_BOOL(DisableSignalHandlers); + + if (sandbox_is_active()) { +#define SB_NOCHANGE_STR(opt) \ + if (! CFG_EQ_STRING(old, new_val, opt)) \ + BAD_CHANGE_TO(opt," with Sandbox active") +#define SB_NOCHANGE_LINELIST(opt) \ + if (! CFG_EQ_LINELIST(old, new_val, opt)) \ + BAD_CHANGE_TO(opt," with Sandbox active") +#define SB_NOCHANGE_INT(opt) \ + if (! CFG_EQ_INT(old, new_val, opt)) \ + BAD_CHANGE_TO(opt," with Sandbox active") + + SB_NOCHANGE_STR(Address); + SB_NOCHANGE_STR(ServerDNSResolvConfFile); + SB_NOCHANGE_STR(DirPortFrontPage); + SB_NOCHANGE_STR(CookieAuthFile); + SB_NOCHANGE_STR(ExtORPortCookieAuthFile); + SB_NOCHANGE_LINELIST(Logs); + SB_NOCHANGE_INT(ConnLimit); + + if (server_mode(old) != server_mode(new_val)) { + *msg = tor_strdup("Can't start/stop being a server while " + "Sandbox is active"); + return -1; + } + } + +#undef SB_NOCHANGE_LINELIST +#undef SB_NOCHANGE_STR +#undef SB_NOCHANGE_INT +#undef BAD_CHANGE_TO +#undef NO_CHANGE_BOOL +#undef NO_CHANGE_INT +#undef NO_CHANGE_STRING + return 0; +} + +/** Return 1 if any change from old_options to new_options + * will require us to rotate the CPU and DNS workers; else return 0. */ +static int +options_transition_affects_workers(const or_options_t *old_options, + const or_options_t *new_options) +{ + YES_IF_CHANGED_STRING(DataDirectory); + YES_IF_CHANGED_INT(NumCPUs); + YES_IF_CHANGED_LINELIST(ORPort_lines); + YES_IF_CHANGED_BOOL(ServerDNSSearchDomains); + YES_IF_CHANGED_BOOL(SafeLogging_); + YES_IF_CHANGED_BOOL(ClientOnly); + YES_IF_CHANGED_BOOL(LogMessageDomains); + YES_IF_CHANGED_LINELIST(Logs); + + if (server_mode(old_options) != server_mode(new_options) || + public_server_mode(old_options) != public_server_mode(new_options) || + dir_server_mode(old_options) != dir_server_mode(new_options)) + return 1; + + /* Nothing that changed matters. */ + return 0; +} + +/** Return 1 if any change from old_options to new_options + * will require us to generate a new descriptor; else return 0. */ +static int +options_transition_affects_descriptor(const or_options_t *old_options, + const or_options_t *new_options) +{ + /* XXX We can be smarter here. If your DirPort isn't being + * published and you just turned it off, no need to republish. Etc. */ + + YES_IF_CHANGED_STRING(DataDirectory); + YES_IF_CHANGED_STRING(Nickname); + YES_IF_CHANGED_STRING(Address); + YES_IF_CHANGED_LINELIST(ExitPolicy); + YES_IF_CHANGED_BOOL(ExitRelay); + YES_IF_CHANGED_BOOL(ExitPolicyRejectPrivate); + YES_IF_CHANGED_BOOL(ExitPolicyRejectLocalInterfaces); + YES_IF_CHANGED_BOOL(IPv6Exit); + YES_IF_CHANGED_LINELIST(ORPort_lines); + YES_IF_CHANGED_LINELIST(DirPort_lines); + YES_IF_CHANGED_LINELIST(DirPort_lines); + YES_IF_CHANGED_BOOL(ClientOnly); + YES_IF_CHANGED_BOOL(DisableNetwork); + YES_IF_CHANGED_BOOL(PublishServerDescriptor_); + YES_IF_CHANGED_STRING(ContactInfo); + YES_IF_CHANGED_STRING(BridgeDistribution); + YES_IF_CHANGED_LINELIST(MyFamily); + YES_IF_CHANGED_STRING(AccountingStart); + YES_IF_CHANGED_INT(AccountingMax); + YES_IF_CHANGED_INT(AccountingRule); + YES_IF_CHANGED_BOOL(DirCache); + YES_IF_CHANGED_BOOL(AssumeReachable); + + if (get_effective_bwrate(old_options) != get_effective_bwrate(new_options) || + get_effective_bwburst(old_options) != + get_effective_bwburst(new_options) || + public_server_mode(old_options) != public_server_mode(new_options)) + return 1; + + return 0; +} + +#ifdef _WIN32 +/** Return the directory on windows where we expect to find our application + * data. */ +static char * +get_windows_conf_root(void) +{ + static int is_set = 0; + static char path[MAX_PATH*2+1]; + TCHAR tpath[MAX_PATH] = {0}; + + LPITEMIDLIST idl; + IMalloc *m; + HRESULT result; + + if (is_set) + return path; + + /* Find X:\documents and settings\username\application data\ . + * We would use SHGetSpecialFolder path, but that wasn't added until IE4. + */ +#ifdef ENABLE_LOCAL_APPDATA +#define APPDATA_PATH CSIDL_LOCAL_APPDATA +#else +#define APPDATA_PATH CSIDL_APPDATA +#endif + if (!SUCCEEDED(SHGetSpecialFolderLocation(NULL, APPDATA_PATH, &idl))) { + getcwd(path,MAX_PATH); + is_set = 1; + log_warn(LD_CONFIG, + "I couldn't find your application data folder: are you " + "running an ancient version of Windows 95? Defaulting to \"%s\"", + path); + return path; + } + /* Convert the path from an "ID List" (whatever that is!) to a path. */ + result = SHGetPathFromIDList(idl, tpath); +#ifdef UNICODE + wcstombs(path,tpath,sizeof(path)); + path[sizeof(path)-1] = '\0'; +#else + strlcpy(path,tpath,sizeof(path)); +#endif /* defined(UNICODE) */ + + /* Now we need to free the memory that the path-idl was stored in. In + * typical Windows fashion, we can't just call 'free()' on it. */ + SHGetMalloc(&m); + if (m) { + m->lpVtbl->Free(m, idl); + m->lpVtbl->Release(m); + } + if (!SUCCEEDED(result)) { + return NULL; + } + strlcat(path,"\\tor",MAX_PATH); + is_set = 1; + return path; +} +#endif /* defined(_WIN32) */ + +/** Return the default location for our torrc file (if defaults_file is + * false), or for the torrc-defaults file (if defaults_file is true). */ +static const char * +get_default_conf_file(int defaults_file) +{ +#ifdef DISABLE_SYSTEM_TORRC + (void) defaults_file; + return NULL; +#elif defined(_WIN32) + if (defaults_file) { + static char defaults_path[MAX_PATH+1]; + tor_snprintf(defaults_path, MAX_PATH, "%s\\torrc-defaults", + get_windows_conf_root()); + return defaults_path; + } else { + static char path[MAX_PATH+1]; + tor_snprintf(path, MAX_PATH, "%s\\torrc", + get_windows_conf_root()); + return path; + } +#else + return defaults_file ? CONFDIR "/torrc-defaults" : CONFDIR "/torrc"; +#endif /* defined(DISABLE_SYSTEM_TORRC) || ... */ +} + +/** Verify whether lst is a list of strings containing valid-looking + * comma-separated nicknames, or NULL. Will normalise lst to prefix '$' + * to any nickname or fingerprint that needs it. Also splits comma-separated + * list elements into multiple elements. Return 0 on success. + * Warn and return -1 on failure. + */ +static int +normalize_nickname_list(config_line_t **normalized_out, + const config_line_t *lst, const char *name, + char **msg) +{ + if (!lst) + return 0; + + config_line_t *new_nicknames = NULL; + config_line_t **new_nicknames_next = &new_nicknames; + + const config_line_t *cl; + for (cl = lst; cl; cl = cl->next) { + const char *line = cl->value; + if (!line) + continue; + + int valid_line = 1; + smartlist_t *sl = smartlist_new(); + smartlist_split_string(sl, line, ",", + SPLIT_SKIP_SPACE|SPLIT_IGNORE_BLANK|SPLIT_STRIP_SPACE, 0); + SMARTLIST_FOREACH_BEGIN(sl, char *, s) + { + char *normalized = NULL; + if (!is_legal_nickname_or_hexdigest(s)) { + // check if first char is dollar + if (s[0] != '$') { + // Try again but with a dollar symbol prepended + char *prepended; + tor_asprintf(&prepended, "$%s", s); + + if (is_legal_nickname_or_hexdigest(prepended)) { + // The nickname is valid when it's prepended, set it as the + // normalized version + normalized = prepended; + } else { + // Still not valid, free and fallback to error message + tor_free(prepended); + } + } + + if (!normalized) { + tor_asprintf(msg, "Invalid nickname '%s' in %s line", s, name); + valid_line = 0; + break; + } + } else { + normalized = tor_strdup(s); + } + + config_line_t *next = tor_malloc_zero(sizeof(*next)); + next->key = tor_strdup(cl->key); + next->value = normalized; + next->next = NULL; + + *new_nicknames_next = next; + new_nicknames_next = &next->next; + } SMARTLIST_FOREACH_END(s); + + SMARTLIST_FOREACH(sl, char *, s, tor_free(s)); + smartlist_free(sl); + + if (!valid_line) { + config_free_lines(new_nicknames); + return -1; + } + } + + *normalized_out = new_nicknames; + + return 0; +} + +/** Learn config file name from command line arguments, or use the default. + * + * If defaults_file is true, we're looking for torrc-defaults; + * otherwise, we're looking for the regular torrc_file. + * + * Set *using_default_fname to true if we're using the default + * configuration file name; or false if we've set it from the command line. + * + * Set *ignore_missing_torrc to true if we should ignore the resulting + * filename if it doesn't exist. + */ +static char * +find_torrc_filename(config_line_t *cmd_arg, + int defaults_file, + int *using_default_fname, int *ignore_missing_torrc) +{ + char *fname=NULL; + config_line_t *p_index; + const char *fname_opt = defaults_file ? "--defaults-torrc" : "-f"; + const char *ignore_opt = defaults_file ? NULL : "--ignore-missing-torrc"; + + if (defaults_file) + *ignore_missing_torrc = 1; + + for (p_index = cmd_arg; p_index; p_index = p_index->next) { + if (!strcmp(p_index->key, fname_opt)) { + if (fname) { + log_warn(LD_CONFIG, "Duplicate %s options on command line.", + fname_opt); + tor_free(fname); + } + fname = expand_filename(p_index->value); + + { + char *absfname; + absfname = make_path_absolute(fname); + tor_free(fname); + fname = absfname; + } + + *using_default_fname = 0; + } else if (ignore_opt && !strcmp(p_index->key,ignore_opt)) { + *ignore_missing_torrc = 1; + } + } + + if (*using_default_fname) { + /* didn't find one, try CONFDIR */ + const char *dflt = get_default_conf_file(defaults_file); + file_status_t st = file_status(dflt); + if (dflt && (st == FN_FILE || st == FN_EMPTY)) { + fname = tor_strdup(dflt); + } else { +#ifndef _WIN32 + char *fn = NULL; + if (!defaults_file) { + fn = expand_filename("~/.torrc"); + } + if (fn) { + file_status_t hmst = file_status(fn); + if (hmst == FN_FILE || hmst == FN_EMPTY || dflt == NULL) { + fname = fn; + } else { + tor_free(fn); + fname = tor_strdup(dflt); + } + } else { + fname = dflt ? tor_strdup(dflt) : NULL; + } +#else /* !(!defined(_WIN32)) */ + fname = dflt ? tor_strdup(dflt) : NULL; +#endif /* !defined(_WIN32) */ + } + } + return fname; +} + +/** Read the torrc from standard input and return it as a string. + * Upon failure, return NULL. + */ +static char * +load_torrc_from_stdin(void) +{ + size_t sz_out; + + return read_file_to_str_until_eof(STDIN_FILENO,SIZE_MAX,&sz_out); +} + +/** Load a configuration file from disk, setting torrc_fname or + * torrc_defaults_fname if successful. + * + * If defaults_file is true, load torrc-defaults; otherwise load torrc. + * + * Return the contents of the file on success, and NULL on failure. + */ +static char * +load_torrc_from_disk(config_line_t *cmd_arg, int defaults_file) +{ + char *fname=NULL; + char *cf = NULL; + int using_default_torrc = 1; + int ignore_missing_torrc = 0; + char **fname_var = defaults_file ? &torrc_defaults_fname : &torrc_fname; + + if (*fname_var == NULL) { + fname = find_torrc_filename(cmd_arg, defaults_file, + &using_default_torrc, &ignore_missing_torrc); + tor_free(*fname_var); + *fname_var = fname; + } else { + fname = *fname_var; + } + log_debug(LD_CONFIG, "Opening config file \"%s\"", fname?fname:""); + + /* Open config file */ + file_status_t st = fname ? file_status(fname) : FN_EMPTY; + if (fname == NULL || + !(st == FN_FILE || st == FN_EMPTY) || + !(cf = read_file_to_str(fname,0,NULL))) { + if (using_default_torrc == 1 || ignore_missing_torrc) { + if (!defaults_file) + log_notice(LD_CONFIG, "Configuration file \"%s\" not present, " + "using reasonable defaults.", fname); + tor_free(fname); /* sets fname to NULL */ + *fname_var = NULL; + cf = tor_strdup(""); + } else { + log_warn(LD_CONFIG, + "Unable to open configuration file \"%s\".", fname); + goto err; + } + } else { + log_notice(LD_CONFIG, "Read configuration file \"%s\".", fname); + } + + return cf; + err: + tor_free(fname); + *fname_var = NULL; + return NULL; +} + +/** Read a configuration file into options, finding the configuration + * file location based on the command line. After loading the file + * call options_init_from_string() to load the config. + * Return 0 if success, -1 if failure, and 1 if we succeeded but should exit + * anyway. */ +int +options_init_from_torrc(int argc, char **argv) +{ + char *cf=NULL, *cf_defaults=NULL; + int command; + int retval = -1; + char *command_arg = NULL; + char *errmsg=NULL; + config_line_t *p_index = NULL; + config_line_t *cmdline_only_options = NULL; + + /* Go through command-line variables */ + if (! have_parsed_cmdline) { + /* Or we could redo the list every time we pass this place. + * It does not really matter */ + if (config_parse_commandline(argc, argv, 0, &global_cmdline_options, + &global_cmdline_only_options) < 0) { + goto err; + } + have_parsed_cmdline = 1; + } + cmdline_only_options = global_cmdline_only_options; + + if (config_line_find(cmdline_only_options, "-h") || + config_line_find(cmdline_only_options, "--help")) { + print_usage(); + return 1; + } + if (config_line_find(cmdline_only_options, "--list-torrc-options")) { + /* For validating whether we've documented everything. */ + list_torrc_options(); + return 1; + } + if (config_line_find(cmdline_only_options, "--list-deprecated-options")) { + /* For validating whether what we have deprecated really exists. */ + list_deprecated_options(); + return 1; + } + + if (config_line_find(cmdline_only_options, "--version")) { + printf("Tor version %s.\n",get_version()); + return 1; + } + + if (config_line_find(cmdline_only_options, "--library-versions")) { + printf("Tor version %s. \n", get_version()); + printf("Library versions\tCompiled\t\tRuntime\n"); + printf("Libevent\t\t%-15s\t\t%s\n", + tor_libevent_get_header_version_str(), + tor_libevent_get_version_str()); + printf("OpenSSL \t\t%-15s\t\t%s\n", + crypto_openssl_get_header_version_str(), + crypto_openssl_get_version_str()); + if (tor_compress_supports_method(ZLIB_METHOD)) { + printf("Zlib \t\t%-15s\t\t%s\n", + tor_compress_version_str(ZLIB_METHOD), + tor_compress_header_version_str(ZLIB_METHOD)); + } + if (tor_compress_supports_method(LZMA_METHOD)) { + printf("Liblzma \t\t%-15s\t\t%s\n", + tor_compress_version_str(LZMA_METHOD), + tor_compress_header_version_str(LZMA_METHOD)); + } + if (tor_compress_supports_method(ZSTD_METHOD)) { + printf("Libzstd \t\t%-15s\t\t%s\n", + tor_compress_version_str(ZSTD_METHOD), + tor_compress_header_version_str(ZSTD_METHOD)); + } + //TODO: Hex versions? + return 1; + } + + command = CMD_RUN_TOR; + for (p_index = cmdline_only_options; p_index; p_index = p_index->next) { + if (!strcmp(p_index->key,"--keygen")) { + command = CMD_KEYGEN; + } else if (!strcmp(p_index->key, "--key-expiration")) { + command = CMD_KEY_EXPIRATION; + command_arg = p_index->value; + } else if (!strcmp(p_index->key,"--list-fingerprint")) { + command = CMD_LIST_FINGERPRINT; + } else if (!strcmp(p_index->key, "--hash-password")) { + command = CMD_HASH_PASSWORD; + command_arg = p_index->value; + } else if (!strcmp(p_index->key, "--dump-config")) { + command = CMD_DUMP_CONFIG; + command_arg = p_index->value; + } else if (!strcmp(p_index->key, "--verify-config")) { + command = CMD_VERIFY_CONFIG; + } + } + + if (command == CMD_HASH_PASSWORD) { + cf_defaults = tor_strdup(""); + cf = tor_strdup(""); + } else { + cf_defaults = load_torrc_from_disk(cmdline_only_options, 1); + + const config_line_t *f_line = config_line_find(cmdline_only_options, + "-f"); + + const int read_torrc_from_stdin = + (f_line != NULL && strcmp(f_line->value, "-") == 0); + + if (read_torrc_from_stdin) { + cf = load_torrc_from_stdin(); + } else { + cf = load_torrc_from_disk(cmdline_only_options, 0); + } + + if (!cf) { + if (config_line_find(cmdline_only_options, "--allow-missing-torrc")) { + cf = tor_strdup(""); + } else { + goto err; + } + } + } + + retval = options_init_from_string(cf_defaults, cf, command, command_arg, + &errmsg); + + if (retval < 0) + goto err; + + if (config_line_find(cmdline_only_options, "--no-passphrase")) { + if (command == CMD_KEYGEN) { + get_options_mutable()->keygen_force_passphrase = FORCE_PASSPHRASE_OFF; + } else { + log_err(LD_CONFIG, "--no-passphrase specified without --keygen!"); + retval = -1; + goto err; + } + } + + if (config_line_find(cmdline_only_options, "--newpass")) { + if (command == CMD_KEYGEN) { + get_options_mutable()->change_key_passphrase = 1; + } else { + log_err(LD_CONFIG, "--newpass specified without --keygen!"); + retval = -1; + goto err; + } + } + + { + const config_line_t *fd_line = config_line_find(cmdline_only_options, + "--passphrase-fd"); + if (fd_line) { + if (get_options()->keygen_force_passphrase == FORCE_PASSPHRASE_OFF) { + log_err(LD_CONFIG, "--no-passphrase specified with --passphrase-fd!"); + retval = -1; + goto err; + } else if (command != CMD_KEYGEN) { + log_err(LD_CONFIG, "--passphrase-fd specified without --keygen!"); + retval = -1; + goto err; + } else { + const char *v = fd_line->value; + int ok = 1; + long fd = tor_parse_long(v, 10, 0, INT_MAX, &ok, NULL); + if (fd < 0 || ok == 0) { + log_err(LD_CONFIG, "Invalid --passphrase-fd value %s", escaped(v)); + retval = -1; + goto err; + } + get_options_mutable()->keygen_passphrase_fd = (int)fd; + get_options_mutable()->use_keygen_passphrase_fd = 1; + get_options_mutable()->keygen_force_passphrase = FORCE_PASSPHRASE_ON; + } + } + } + + { + const config_line_t *key_line = config_line_find(cmdline_only_options, + "--master-key"); + if (key_line) { + if (command != CMD_KEYGEN) { + log_err(LD_CONFIG, "--master-key without --keygen!"); + retval = -1; + goto err; + } else { + get_options_mutable()->master_key_fname = tor_strdup(key_line->value); + } + } + } + + err: + + tor_free(cf); + tor_free(cf_defaults); + if (errmsg) { + log_warn(LD_CONFIG,"%s", errmsg); + tor_free(errmsg); + } + return retval < 0 ? -1 : 0; +} + +/** Load the options from the configuration in cf, validate + * them for consistency and take actions based on them. + * + * Return 0 if success, negative on error: + * * -1 for general errors. + * * -2 for failure to parse/validate, + * * -3 for transition not allowed + * * -4 for error while setting the new options + */ +setopt_err_t +options_init_from_string(const char *cf_defaults, const char *cf, + int command, const char *command_arg, + char **msg) +{ + or_options_t *oldoptions, *newoptions, *newdefaultoptions=NULL; + config_line_t *cl; + int retval; + setopt_err_t err = SETOPT_ERR_MISC; + int cf_has_include = 0; + tor_assert(msg); + + oldoptions = global_options; /* get_options unfortunately asserts if + this is the first time we run*/ + + newoptions = tor_malloc_zero(sizeof(or_options_t)); + newoptions->magic_ = OR_OPTIONS_MAGIC; + options_init(newoptions); + newoptions->command = command; + newoptions->command_arg = command_arg ? tor_strdup(command_arg) : NULL; + + smartlist_t *opened_files = smartlist_new(); + for (int i = 0; i < 2; ++i) { + const char *body = i==0 ? cf_defaults : cf; + if (!body) + continue; + + /* get config lines, assign them */ + retval = config_get_lines_include(body, &cl, 1, + body == cf ? &cf_has_include : NULL, + opened_files); + if (retval < 0) { + err = SETOPT_ERR_PARSE; + goto err; + } + retval = config_assign(&options_format, newoptions, cl, + CAL_WARN_DEPRECATIONS, msg); + config_free_lines(cl); + if (retval < 0) { + err = SETOPT_ERR_PARSE; + goto err; + } + if (i==0) + newdefaultoptions = config_dup(&options_format, newoptions); + } + + if (newdefaultoptions == NULL) { + newdefaultoptions = config_dup(&options_format, global_default_options); + } + + /* Go through command-line variables too */ + retval = config_assign(&options_format, newoptions, + global_cmdline_options, CAL_WARN_DEPRECATIONS, msg); + if (retval < 0) { + err = SETOPT_ERR_PARSE; + goto err; + } + + newoptions->IncludeUsed = cf_has_include; + newoptions->FilesOpenedByIncludes = opened_files; + + /* If this is a testing network configuration, change defaults + * for a list of dependent config options, re-initialize newoptions + * with the new defaults, and assign all options to it second time. */ + if (newoptions->TestingTorNetwork) { + /* XXXX this is a bit of a kludge. perhaps there's a better way to do + * this? We could, for example, make the parsing algorithm do two passes + * over the configuration. If it finds any "suite" options like + * TestingTorNetwork, it could change the defaults before its second pass. + * Not urgent so long as this seems to work, but at any sign of trouble, + * let's clean it up. -NM */ + + /* Change defaults. */ + for (int i = 0; testing_tor_network_defaults[i].name; ++i) { + const config_var_t *new_var = &testing_tor_network_defaults[i]; + config_var_t *old_var = + config_find_option_mutable(&options_format, new_var->name); + tor_assert(new_var); + tor_assert(old_var); + old_var->initvalue = new_var->initvalue; + + if ((config_find_deprecation(&options_format, new_var->name))) { + log_warn(LD_GENERAL, "Testing options override the deprecated " + "option %s. Is that intentional?", + new_var->name); + } + } + + /* Clear newoptions and re-initialize them with new defaults. */ + or_options_free(newoptions); + or_options_free(newdefaultoptions); + newdefaultoptions = NULL; + newoptions = tor_malloc_zero(sizeof(or_options_t)); + newoptions->magic_ = OR_OPTIONS_MAGIC; + options_init(newoptions); + newoptions->command = command; + newoptions->command_arg = command_arg ? tor_strdup(command_arg) : NULL; + + /* Assign all options a second time. */ + opened_files = smartlist_new(); + for (int i = 0; i < 2; ++i) { + const char *body = i==0 ? cf_defaults : cf; + if (!body) + continue; + + /* get config lines, assign them */ + retval = config_get_lines_include(body, &cl, 1, + body == cf ? &cf_has_include : NULL, + opened_files); + if (retval < 0) { + err = SETOPT_ERR_PARSE; + goto err; + } + retval = config_assign(&options_format, newoptions, cl, 0, msg); + config_free_lines(cl); + if (retval < 0) { + err = SETOPT_ERR_PARSE; + goto err; + } + if (i==0) + newdefaultoptions = config_dup(&options_format, newoptions); + } + /* Assign command-line variables a second time too */ + retval = config_assign(&options_format, newoptions, + global_cmdline_options, 0, msg); + if (retval < 0) { + err = SETOPT_ERR_PARSE; + goto err; + } + } + + newoptions->IncludeUsed = cf_has_include; + in_option_validation = 1; + newoptions->FilesOpenedByIncludes = opened_files; + + /* Validate newoptions */ + if (options_validate(oldoptions, newoptions, newdefaultoptions, + 0, msg) < 0) { + err = SETOPT_ERR_PARSE; /*XXX make this a separate return value.*/ + goto err; + } + + if (options_transition_allowed(oldoptions, newoptions, msg) < 0) { + err = SETOPT_ERR_TRANSITION; + goto err; + } + in_option_validation = 0; + + if (set_options(newoptions, msg)) { + err = SETOPT_ERR_SETTING; + goto err; /* frees and replaces old options */ + } + + or_options_free(global_default_options); + global_default_options = newdefaultoptions; + + return SETOPT_OK; + + err: + in_option_validation = 0; + if (opened_files) { + SMARTLIST_FOREACH(opened_files, char *, f, tor_free(f)); + smartlist_free(opened_files); + } + // may have been set to opened_files, avoid double free + newoptions->FilesOpenedByIncludes = NULL; + or_options_free(newoptions); + or_options_free(newdefaultoptions); + if (*msg) { + char *old_msg = *msg; + tor_asprintf(msg, "Failed to parse/validate config: %s", old_msg); + tor_free(old_msg); + } + return err; +} + +/** Return the location for our configuration file. May return NULL. + */ +const char * +get_torrc_fname(int defaults_fname) +{ + const char *fname = defaults_fname ? torrc_defaults_fname : torrc_fname; + + if (fname) + return fname; + else + return get_default_conf_file(defaults_fname); +} + +/** Adjust the address map based on the MapAddress elements in the + * configuration options + */ +void +config_register_addressmaps(const or_options_t *options) +{ + smartlist_t *elts; + config_line_t *opt; + const char *from, *to, *msg; + + addressmap_clear_configured(); + elts = smartlist_new(); + for (opt = options->AddressMap; opt; opt = opt->next) { + smartlist_split_string(elts, opt->value, NULL, + SPLIT_SKIP_SPACE|SPLIT_IGNORE_BLANK, 2); + if (smartlist_len(elts) < 2) { + log_warn(LD_CONFIG,"MapAddress '%s' has too few arguments. Ignoring.", + opt->value); + goto cleanup; + } + + from = smartlist_get(elts,0); + to = smartlist_get(elts,1); + + if (to[0] == '.' || from[0] == '.') { + log_warn(LD_CONFIG,"MapAddress '%s' is ambiguous - address starts with a" + "'.'. Ignoring.",opt->value); + goto cleanup; + } + + if (addressmap_register_auto(from, to, 0, ADDRMAPSRC_TORRC, &msg) < 0) { + log_warn(LD_CONFIG,"MapAddress '%s' failed: %s. Ignoring.", opt->value, + msg); + goto cleanup; + } + + if (smartlist_len(elts) > 2) + log_warn(LD_CONFIG,"Ignoring extra arguments to MapAddress."); + + cleanup: + SMARTLIST_FOREACH(elts, char*, cp, tor_free(cp)); + smartlist_clear(elts); + } + smartlist_free(elts); +} + +/** As addressmap_register(), but detect the wildcarded status of "from" and + * "to", and do not steal a reference to to. */ +/* XXXX move to connection_edge.c */ +int +addressmap_register_auto(const char *from, const char *to, + time_t expires, + addressmap_entry_source_t addrmap_source, + const char **msg) +{ + int from_wildcard = 0, to_wildcard = 0; + + *msg = "whoops, forgot the error message"; + + if (!strcmp(to, "*") || !strcmp(from, "*")) { + *msg = "can't remap from or to *"; + return -1; + } + /* Detect asterisks in expressions of type: '*.example.com' */ + if (!strncmp(from,"*.",2)) { + from += 2; + from_wildcard = 1; + } + if (!strncmp(to,"*.",2)) { + to += 2; + to_wildcard = 1; + } + + if (to_wildcard && !from_wildcard) { + *msg = "can only use wildcard (i.e. '*.') if 'from' address " + "uses wildcard also"; + return -1; + } + + if (address_is_invalid_destination(to, 1)) { + *msg = "destination is invalid"; + return -1; + } + + addressmap_register(from, tor_strdup(to), expires, addrmap_source, + from_wildcard, to_wildcard); + + return 0; +} + +/** + * As add_file_log, but open the file as appropriate. + */ +STATIC int +open_and_add_file_log(const log_severity_list_t *severity, + const char *filename, int truncate_log) +{ + int open_flags = O_WRONLY|O_CREAT; + open_flags |= truncate_log ? O_TRUNC : O_APPEND; + + int fd = tor_open_cloexec(filename, open_flags, 0640); + if (fd < 0) + return -1; + + return add_file_log(severity, filename, fd); +} + +/** + * Initialize the logs based on the configuration file. + */ +static int +options_init_logs(const or_options_t *old_options, or_options_t *options, + int validate_only) +{ + config_line_t *opt; + int ok; + smartlist_t *elts; + int run_as_daemon = +#ifdef _WIN32 + 0; +#else + options->RunAsDaemon; +#endif + + if (options->LogTimeGranularity <= 0) { + log_warn(LD_CONFIG, "Log time granularity '%d' has to be positive.", + options->LogTimeGranularity); + return -1; + } else if (1000 % options->LogTimeGranularity != 0 && + options->LogTimeGranularity % 1000 != 0) { + int granularity = options->LogTimeGranularity; + if (granularity < 40) { + do granularity++; + while (1000 % granularity != 0); + } else if (granularity < 1000) { + granularity = 1000 / granularity; + while (1000 % granularity != 0) + granularity--; + granularity = 1000 / granularity; + } else { + granularity = 1000 * ((granularity / 1000) + 1); + } + log_warn(LD_CONFIG, "Log time granularity '%d' has to be either a " + "divisor or a multiple of 1 second. Changing to " + "'%d'.", + options->LogTimeGranularity, granularity); + if (!validate_only) + set_log_time_granularity(granularity); + } else { + if (!validate_only) + set_log_time_granularity(options->LogTimeGranularity); + } + + ok = 1; + elts = smartlist_new(); + + for (opt = options->Logs; opt; opt = opt->next) { + log_severity_list_t *severity; + const char *cfg = opt->value; + severity = tor_malloc_zero(sizeof(log_severity_list_t)); + if (parse_log_severity_config(&cfg, severity) < 0) { + log_warn(LD_CONFIG, "Couldn't parse log levels in Log option 'Log %s'", + opt->value); + ok = 0; goto cleanup; + } + + smartlist_split_string(elts, cfg, NULL, + SPLIT_SKIP_SPACE|SPLIT_IGNORE_BLANK, 2); + + if (smartlist_len(elts) == 0) + smartlist_add_strdup(elts, "stdout"); + + if (smartlist_len(elts) == 1 && + (!strcasecmp(smartlist_get(elts,0), "stdout") || + !strcasecmp(smartlist_get(elts,0), "stderr"))) { + int err = smartlist_len(elts) && + !strcasecmp(smartlist_get(elts,0), "stderr"); + if (!validate_only) { + if (run_as_daemon) { + log_warn(LD_CONFIG, + "Can't log to %s with RunAsDaemon set; skipping stdout", + err?"stderr":"stdout"); + } else { + add_stream_log(severity, err?"":"", + fileno(err?stderr:stdout)); + } + } + goto cleanup; + } + if (smartlist_len(elts) == 1) { + if (!strcasecmp(smartlist_get(elts,0), "syslog")) { +#ifdef HAVE_SYSLOG_H + if (!validate_only) { + add_syslog_log(severity, options->SyslogIdentityTag); + } +#else + log_warn(LD_CONFIG, "Syslog is not supported on this system. Sorry."); +#endif /* defined(HAVE_SYSLOG_H) */ + goto cleanup; + } + + if (!strcasecmp(smartlist_get(elts, 0), "android")) { +#ifdef HAVE_ANDROID_LOG_H + if (!validate_only) { + add_android_log(severity, options->AndroidIdentityTag); + } +#else + log_warn(LD_CONFIG, "Android logging is not supported" + " on this system. Sorry."); +#endif // HAVE_ANDROID_LOG_H. + goto cleanup; + } + } + + if (smartlist_len(elts) == 2 && + !strcasecmp(smartlist_get(elts,0), "file")) { + if (!validate_only) { + char *fname = expand_filename(smartlist_get(elts, 1)); + /* Truncate if TruncateLogFile is set and we haven't seen this option + line before. */ + int truncate_log = 0; + if (options->TruncateLogFile) { + truncate_log = 1; + if (old_options) { + config_line_t *opt2; + for (opt2 = old_options->Logs; opt2; opt2 = opt2->next) + if (!strcmp(opt->value, opt2->value)) { + truncate_log = 0; + break; + } + } + } + if (open_and_add_file_log(severity, fname, truncate_log) < 0) { + log_warn(LD_CONFIG, "Couldn't open file for 'Log %s': %s", + opt->value, strerror(errno)); + ok = 0; + } + tor_free(fname); + } + goto cleanup; + } + + log_warn(LD_CONFIG, "Bad syntax on file Log option 'Log %s'", + opt->value); + ok = 0; goto cleanup; + + cleanup: + SMARTLIST_FOREACH(elts, char*, cp, tor_free(cp)); + smartlist_clear(elts); + tor_free(severity); + } + smartlist_free(elts); + + if (ok && !validate_only) + logs_set_domain_logging(options->LogMessageDomains); + + return ok?0:-1; +} + +/** Given a smartlist of SOCKS arguments to be passed to a transport + * proxy in args, validate them and return -1 if they are + * corrupted. Return 0 if they seem OK. */ +static int +validate_transport_socks_arguments(const smartlist_t *args) +{ + char *socks_string = NULL; + size_t socks_string_len; + + tor_assert(args); + tor_assert(smartlist_len(args) > 0); + + SMARTLIST_FOREACH_BEGIN(args, const char *, s) { + if (!string_is_key_value(LOG_WARN, s)) { /* items should be k=v items */ + log_warn(LD_CONFIG, "'%s' is not a k=v item.", s); + return -1; + } + } SMARTLIST_FOREACH_END(s); + + socks_string = pt_stringify_socks_args(args); + if (!socks_string) + return -1; + + socks_string_len = strlen(socks_string); + tor_free(socks_string); + + if (socks_string_len > MAX_SOCKS5_AUTH_SIZE_TOTAL) { + log_warn(LD_CONFIG, "SOCKS arguments can't be more than %u bytes (%lu).", + MAX_SOCKS5_AUTH_SIZE_TOTAL, + (unsigned long) socks_string_len); + return -1; + } + + return 0; +} + +/** Deallocate a bridge_line_t structure. */ +/* private */ void +bridge_line_free_(bridge_line_t *bridge_line) +{ + if (!bridge_line) + return; + + if (bridge_line->socks_args) { + SMARTLIST_FOREACH(bridge_line->socks_args, char*, s, tor_free(s)); + smartlist_free(bridge_line->socks_args); + } + tor_free(bridge_line->transport_name); + tor_free(bridge_line); +} + +/** Parse the contents of a string, line, containing a Bridge line, + * into a bridge_line_t. + * + * Validates that the IP:PORT, fingerprint, and SOCKS arguments (given to the + * Pluggable Transport, if a one was specified) are well-formed. + * + * Returns NULL If the Bridge line could not be validated, and returns a + * bridge_line_t containing the parsed information otherwise. + * + * Bridge line format: + * Bridge [transport] IP:PORT [id-fingerprint] [k=v] [k=v] ... + */ +/* private */ bridge_line_t * +parse_bridge_line(const char *line) +{ + smartlist_t *items = NULL; + char *addrport=NULL, *fingerprint=NULL; + char *field=NULL; + bridge_line_t *bridge_line = tor_malloc_zero(sizeof(bridge_line_t)); + + items = smartlist_new(); + smartlist_split_string(items, line, NULL, + SPLIT_SKIP_SPACE|SPLIT_IGNORE_BLANK, -1); + if (smartlist_len(items) < 1) { + log_warn(LD_CONFIG, "Too few arguments to Bridge line."); + goto err; + } + + /* first field is either a transport name or addrport */ + field = smartlist_get(items, 0); + smartlist_del_keeporder(items, 0); + + if (string_is_C_identifier(field)) { + /* It's a transport name. */ + bridge_line->transport_name = field; + if (smartlist_len(items) < 1) { + log_warn(LD_CONFIG, "Too few items to Bridge line."); + goto err; + } + addrport = smartlist_get(items, 0); /* Next field is addrport then. */ + smartlist_del_keeporder(items, 0); + } else { + addrport = field; + } + + if (tor_addr_port_parse(LOG_INFO, addrport, + &bridge_line->addr, &bridge_line->port, 443)<0) { + log_warn(LD_CONFIG, "Error parsing Bridge address '%s'", addrport); + goto err; + } + + /* If transports are enabled, next field could be a fingerprint or a + socks argument. If transports are disabled, next field must be + a fingerprint. */ + if (smartlist_len(items)) { + if (bridge_line->transport_name) { /* transports enabled: */ + field = smartlist_get(items, 0); + smartlist_del_keeporder(items, 0); + + /* If it's a key=value pair, then it's a SOCKS argument for the + transport proxy... */ + if (string_is_key_value(LOG_DEBUG, field)) { + bridge_line->socks_args = smartlist_new(); + smartlist_add(bridge_line->socks_args, field); + } else { /* ...otherwise, it's the bridge fingerprint. */ + fingerprint = field; + } + + } else { /* transports disabled: */ + fingerprint = smartlist_join_strings(items, "", 0, NULL); + } + } + + /* Handle fingerprint, if it was provided. */ + if (fingerprint) { + if (strlen(fingerprint) != HEX_DIGEST_LEN) { + log_warn(LD_CONFIG, "Key digest for Bridge is wrong length."); + goto err; + } + if (base16_decode(bridge_line->digest, DIGEST_LEN, + fingerprint, HEX_DIGEST_LEN) != DIGEST_LEN) { + log_warn(LD_CONFIG, "Unable to decode Bridge key digest."); + goto err; + } + } + + /* If we are using transports, any remaining items in the smartlist + should be k=v values. */ + if (bridge_line->transport_name && smartlist_len(items)) { + if (!bridge_line->socks_args) + bridge_line->socks_args = smartlist_new(); + + /* append remaining items of 'items' to 'socks_args' */ + smartlist_add_all(bridge_line->socks_args, items); + smartlist_clear(items); + + tor_assert(smartlist_len(bridge_line->socks_args) > 0); + } + + if (bridge_line->socks_args) { + if (validate_transport_socks_arguments(bridge_line->socks_args) < 0) + goto err; + } + + goto done; + + err: + bridge_line_free(bridge_line); + bridge_line = NULL; + + done: + SMARTLIST_FOREACH(items, char*, s, tor_free(s)); + smartlist_free(items); + tor_free(addrport); + tor_free(fingerprint); + + return bridge_line; +} + +/** Read the contents of a ClientTransportPlugin or ServerTransportPlugin + * line from line, depending on the value of server. Return 0 + * if the line is well-formed, and -1 if it isn't. + * + * If validate_only is 0, the line is well-formed, and the transport is + * needed by some bridge: + * - If it's an external proxy line, add the transport described in the line to + * our internal transport list. + * - If it's a managed proxy line, launch the managed proxy. + */ + +STATIC int +parse_transport_line(const or_options_t *options, + const char *line, int validate_only, + int server) +{ + + smartlist_t *items = NULL; + int r; + const char *transports = NULL; + smartlist_t *transport_list = NULL; + char *type = NULL; + char *addrport = NULL; + tor_addr_t addr; + uint16_t port = 0; + int socks_ver = PROXY_NONE; + + /* managed proxy options */ + int is_managed = 0; + char **proxy_argv = NULL; + char **tmp = NULL; + int proxy_argc, i; + int is_useless_proxy = 1; + + int line_length; + + /* Split the line into space-separated tokens */ + items = smartlist_new(); + smartlist_split_string(items, line, NULL, + SPLIT_SKIP_SPACE|SPLIT_IGNORE_BLANK, -1); + line_length = smartlist_len(items); + + if (line_length < 3) { + log_warn(LD_CONFIG, + "Too few arguments on %sTransportPlugin line.", + server ? "Server" : "Client"); + goto err; + } + + /* Get the first line element, split it to commas into + transport_list (in case it's multiple transports) and validate + the transport names. */ + transports = smartlist_get(items, 0); + transport_list = smartlist_new(); + smartlist_split_string(transport_list, transports, ",", + SPLIT_SKIP_SPACE|SPLIT_IGNORE_BLANK, 0); + SMARTLIST_FOREACH_BEGIN(transport_list, const char *, transport_name) { + /* validate transport names */ + if (!string_is_C_identifier(transport_name)) { + log_warn(LD_CONFIG, "Transport name is not a C identifier (%s).", + transport_name); + goto err; + } + + /* see if we actually need the transports provided by this proxy */ + if (!validate_only && transport_is_needed(transport_name)) + is_useless_proxy = 0; + } SMARTLIST_FOREACH_END(transport_name); + + type = smartlist_get(items, 1); + if (!strcmp(type, "exec")) { + is_managed = 1; + } else if (server && !strcmp(type, "proxy")) { + /* 'proxy' syntax only with ServerTransportPlugin */ + is_managed = 0; + } else if (!server && !strcmp(type, "socks4")) { + /* 'socks4' syntax only with ClientTransportPlugin */ + is_managed = 0; + socks_ver = PROXY_SOCKS4; + } else if (!server && !strcmp(type, "socks5")) { + /* 'socks5' syntax only with ClientTransportPlugin */ + is_managed = 0; + socks_ver = PROXY_SOCKS5; + } else { + log_warn(LD_CONFIG, + "Strange %sTransportPlugin type '%s'", + server ? "Server" : "Client", type); + goto err; + } + + if (is_managed && options->Sandbox) { + log_warn(LD_CONFIG, + "Managed proxies are not compatible with Sandbox mode." + "(%sTransportPlugin line was %s)", + server ? "Server" : "Client", escaped(line)); + goto err; + } + + if (is_managed && options->NoExec) { + log_warn(LD_CONFIG, + "Managed proxies are not compatible with NoExec mode; ignoring." + "(%sTransportPlugin line was %s)", + server ? "Server" : "Client", escaped(line)); + r = 0; + goto done; + } + + if (is_managed) { + /* managed */ + + if (!server && !validate_only && is_useless_proxy) { + log_info(LD_GENERAL, + "Pluggable transport proxy (%s) does not provide " + "any needed transports and will not be launched.", + line); + } + + /* + * If we are not just validating, use the rest of the line as the + * argv of the proxy to be launched. Also, make sure that we are + * only launching proxies that contribute useful transports. + */ + + if (!validate_only && (server || !is_useless_proxy)) { + proxy_argc = line_length - 2; + tor_assert(proxy_argc > 0); + proxy_argv = tor_calloc((proxy_argc + 1), sizeof(char *)); + tmp = proxy_argv; + + for (i = 0; i < proxy_argc; i++) { + /* store arguments */ + *tmp++ = smartlist_get(items, 2); + smartlist_del_keeporder(items, 2); + } + *tmp = NULL; /* terminated with NULL, just like execve() likes it */ + + /* kickstart the thing */ + if (server) { + pt_kickstart_server_proxy(transport_list, proxy_argv); + } else { + pt_kickstart_client_proxy(transport_list, proxy_argv); + } + } + } else { + /* external */ + + /* ClientTransportPlugins connecting through a proxy is managed only. */ + if (!server && (options->Socks4Proxy || options->Socks5Proxy || + options->HTTPSProxy)) { + log_warn(LD_CONFIG, "You have configured an external proxy with another " + "proxy type. (Socks4Proxy|Socks5Proxy|HTTPSProxy)"); + goto err; + } + + if (smartlist_len(transport_list) != 1) { + log_warn(LD_CONFIG, + "You can't have an external proxy with more than " + "one transport."); + goto err; + } + + addrport = smartlist_get(items, 2); + + if (tor_addr_port_lookup(addrport, &addr, &port) < 0) { + log_warn(LD_CONFIG, + "Error parsing transport address '%s'", addrport); + goto err; + } + + if (!port) { + log_warn(LD_CONFIG, + "Transport address '%s' has no port.", addrport); + goto err; + } + + if (!validate_only) { + log_info(LD_DIR, "%s '%s' at %s.", + server ? "Server transport" : "Transport", + transports, fmt_addrport(&addr, port)); + + if (!server) { + transport_add_from_config(&addr, port, + smartlist_get(transport_list, 0), + socks_ver); + } + } + } + + r = 0; + goto done; + + err: + r = -1; + + done: + SMARTLIST_FOREACH(items, char*, s, tor_free(s)); + smartlist_free(items); + if (transport_list) { + SMARTLIST_FOREACH(transport_list, char*, s, tor_free(s)); + smartlist_free(transport_list); + } + + return r; +} + +/** Given a ServerTransportListenAddr line, return its + * string. Return NULL if the line was not + * well-formed. + * + * If transport is set, return NULL if the line is not + * referring to transport. + * + * The returned string is allocated on the heap and it's the + * responsibility of the caller to free it. */ +static char * +get_bindaddr_from_transport_listen_line(const char *line,const char *transport) +{ + smartlist_t *items = NULL; + const char *parsed_transport = NULL; + char *addrport = NULL; + tor_addr_t addr; + uint16_t port = 0; + + items = smartlist_new(); + smartlist_split_string(items, line, NULL, + SPLIT_SKIP_SPACE|SPLIT_IGNORE_BLANK, -1); + + if (smartlist_len(items) < 2) { + log_warn(LD_CONFIG,"Too few arguments on ServerTransportListenAddr line."); + goto err; + } + + parsed_transport = smartlist_get(items, 0); + addrport = tor_strdup(smartlist_get(items, 1)); + + /* If 'transport' is given, check if it matches the one on the line */ + if (transport && strcmp(transport, parsed_transport)) + goto err; + + /* Validate addrport */ + if (tor_addr_port_parse(LOG_WARN, addrport, &addr, &port, -1)<0) { + log_warn(LD_CONFIG, "Error parsing ServerTransportListenAddr " + "address '%s'", addrport); + goto err; + } + + goto done; + + err: + tor_free(addrport); + addrport = NULL; + + done: + SMARTLIST_FOREACH(items, char*, s, tor_free(s)); + smartlist_free(items); + + return addrport; +} + +/** Given a ServerTransportOptions line, return a smartlist + * with the options. Return NULL if the line was not well-formed. + * + * If transport is set, return NULL if the line is not + * referring to transport. + * + * The returned smartlist and its strings are allocated on the heap + * and it's the responsibility of the caller to free it. */ +smartlist_t * +get_options_from_transport_options_line(const char *line,const char *transport) +{ + smartlist_t *items = smartlist_new(); + smartlist_t *options = smartlist_new(); + const char *parsed_transport = NULL; + + smartlist_split_string(items, line, NULL, + SPLIT_SKIP_SPACE|SPLIT_IGNORE_BLANK, -1); + + if (smartlist_len(items) < 2) { + log_warn(LD_CONFIG,"Too few arguments on ServerTransportOptions line."); + goto err; + } + + parsed_transport = smartlist_get(items, 0); + /* If 'transport' is given, check if it matches the one on the line */ + if (transport && strcmp(transport, parsed_transport)) + goto err; + + SMARTLIST_FOREACH_BEGIN(items, const char *, option) { + if (option_sl_idx == 0) /* skip the transport field (first field)*/ + continue; + + /* validate that it's a k=v value */ + if (!string_is_key_value(LOG_WARN, option)) { + log_warn(LD_CONFIG, "%s is not a k=v value.", escaped(option)); + goto err; + } + + /* add it to the options smartlist */ + smartlist_add_strdup(options, option); + log_debug(LD_CONFIG, "Added %s to the list of options", escaped(option)); + } SMARTLIST_FOREACH_END(option); + + goto done; + + err: + SMARTLIST_FOREACH(options, char*, s, tor_free(s)); + smartlist_free(options); + options = NULL; + + done: + SMARTLIST_FOREACH(items, char*, s, tor_free(s)); + smartlist_free(items); + + return options; +} + +/** Given the name of a pluggable transport in transport, check + * the configuration file to see if the user has explicitly asked for + * it to listen on a specific port. Return a string if + * so, otherwise NULL. */ +char * +get_transport_bindaddr_from_config(const char *transport) +{ + config_line_t *cl; + const or_options_t *options = get_options(); + + for (cl = options->ServerTransportListenAddr; cl; cl = cl->next) { + char *bindaddr = + get_bindaddr_from_transport_listen_line(cl->value, transport); + if (bindaddr) + return bindaddr; + } + + return NULL; +} + +/** Given the name of a pluggable transport in transport, check + * the configuration file to see if the user has asked us to pass any + * parameters to the pluggable transport. Return a smartlist + * containing the parameters, otherwise NULL. */ +smartlist_t * +get_options_for_server_transport(const char *transport) +{ + config_line_t *cl; + const or_options_t *options = get_options(); + + for (cl = options->ServerTransportOptions; cl; cl = cl->next) { + smartlist_t *options_sl = + get_options_from_transport_options_line(cl->value, transport); + if (options_sl) + return options_sl; + } + + return NULL; +} + +/** Read the contents of a DirAuthority line from line. If + * validate_only is 0, and the line is well-formed, and it + * shares any bits with required_type or required_type + * is NO_DIRINFO (zero), then add the dirserver described in the line + * (minus whatever bits it's missing) as a valid authority. + * Return 0 on success or filtering out by type, + * or -1 if the line isn't well-formed or if we can't add it. */ +STATIC int +parse_dir_authority_line(const char *line, dirinfo_type_t required_type, + int validate_only) +{ + smartlist_t *items = NULL; + int r; + char *addrport=NULL, *address=NULL, *nickname=NULL, *fingerprint=NULL; + tor_addr_port_t ipv6_addrport, *ipv6_addrport_ptr = NULL; + uint16_t dir_port = 0, or_port = 0; + char digest[DIGEST_LEN]; + char v3_digest[DIGEST_LEN]; + dirinfo_type_t type = 0; + double weight = 1.0; + + memset(v3_digest, 0, sizeof(v3_digest)); + + items = smartlist_new(); + smartlist_split_string(items, line, NULL, + SPLIT_SKIP_SPACE|SPLIT_IGNORE_BLANK, -1); + if (smartlist_len(items) < 1) { + log_warn(LD_CONFIG, "No arguments on DirAuthority line."); + goto err; + } + + if (is_legal_nickname(smartlist_get(items, 0))) { + nickname = smartlist_get(items, 0); + smartlist_del_keeporder(items, 0); + } + + while (smartlist_len(items)) { + char *flag = smartlist_get(items, 0); + if (TOR_ISDIGIT(flag[0])) + break; + if (!strcasecmp(flag, "hs") || + !strcasecmp(flag, "no-hs")) { + log_warn(LD_CONFIG, "The DirAuthority options 'hs' and 'no-hs' are " + "obsolete; you don't need them any more."); + } else if (!strcasecmp(flag, "bridge")) { + type |= BRIDGE_DIRINFO; + } else if (!strcasecmp(flag, "no-v2")) { + /* obsolete, but may still be contained in DirAuthority lines generated + by various tools */; + } else if (!strcasecmpstart(flag, "orport=")) { + int ok; + char *portstring = flag + strlen("orport="); + or_port = (uint16_t) tor_parse_long(portstring, 10, 1, 65535, &ok, NULL); + if (!ok) + log_warn(LD_CONFIG, "Invalid orport '%s' on DirAuthority line.", + portstring); + } else if (!strcmpstart(flag, "weight=")) { + int ok; + const char *wstring = flag + strlen("weight="); + weight = tor_parse_double(wstring, 0, (double)UINT64_MAX, &ok, NULL); + if (!ok) { + log_warn(LD_CONFIG, "Invalid weight '%s' on DirAuthority line.",flag); + weight=1.0; + } + } else if (!strcasecmpstart(flag, "v3ident=")) { + char *idstr = flag + strlen("v3ident="); + if (strlen(idstr) != HEX_DIGEST_LEN || + base16_decode(v3_digest, DIGEST_LEN, + idstr, HEX_DIGEST_LEN) != DIGEST_LEN) { + log_warn(LD_CONFIG, "Bad v3 identity digest '%s' on DirAuthority line", + flag); + } else { + type |= V3_DIRINFO|EXTRAINFO_DIRINFO|MICRODESC_DIRINFO; + } + } else if (!strcasecmpstart(flag, "ipv6=")) { + if (ipv6_addrport_ptr) { + log_warn(LD_CONFIG, "Redundant ipv6 addr/port on DirAuthority line"); + } else { + if (tor_addr_port_parse(LOG_WARN, flag+strlen("ipv6="), + &ipv6_addrport.addr, &ipv6_addrport.port, + -1) < 0 + || tor_addr_family(&ipv6_addrport.addr) != AF_INET6) { + log_warn(LD_CONFIG, "Bad ipv6 addr/port %s on DirAuthority line", + escaped(flag)); + goto err; + } + ipv6_addrport_ptr = &ipv6_addrport; + } + } else { + log_warn(LD_CONFIG, "Unrecognized flag '%s' on DirAuthority line", + flag); + } + tor_free(flag); + smartlist_del_keeporder(items, 0); + } + + if (smartlist_len(items) < 2) { + log_warn(LD_CONFIG, "Too few arguments to DirAuthority line."); + goto err; + } + addrport = smartlist_get(items, 0); + smartlist_del_keeporder(items, 0); + if (addr_port_lookup(LOG_WARN, addrport, &address, NULL, &dir_port)<0) { + log_warn(LD_CONFIG, "Error parsing DirAuthority address '%s'", addrport); + goto err; + } + if (!dir_port) { + log_warn(LD_CONFIG, "Missing port in DirAuthority address '%s'",addrport); + goto err; + } + + fingerprint = smartlist_join_strings(items, "", 0, NULL); + if (strlen(fingerprint) != HEX_DIGEST_LEN) { + log_warn(LD_CONFIG, "Key digest '%s' for DirAuthority is wrong length %d.", + fingerprint, (int)strlen(fingerprint)); + goto err; + } + if (base16_decode(digest, DIGEST_LEN, + fingerprint, HEX_DIGEST_LEN) != DIGEST_LEN) { + log_warn(LD_CONFIG, "Unable to decode DirAuthority key digest."); + goto err; + } + + if (!validate_only && (!required_type || required_type & type)) { + dir_server_t *ds; + if (required_type) + type &= required_type; /* pare down what we think of them as an + * authority for. */ + log_debug(LD_DIR, "Trusted %d dirserver at %s:%d (%s)", (int)type, + address, (int)dir_port, (char*)smartlist_get(items,0)); + if (!(ds = trusted_dir_server_new(nickname, address, dir_port, or_port, + ipv6_addrport_ptr, + digest, v3_digest, type, weight))) + goto err; + dir_server_add(ds); + } + + r = 0; + goto done; + + err: + r = -1; + + done: + SMARTLIST_FOREACH(items, char*, s, tor_free(s)); + smartlist_free(items); + tor_free(addrport); + tor_free(address); + tor_free(nickname); + tor_free(fingerprint); + return r; +} + +/** Read the contents of a FallbackDir line from line. If + * validate_only is 0, and the line is well-formed, then add the + * dirserver described in the line as a fallback directory. Return 0 on + * success, or -1 if the line isn't well-formed or if we can't add it. */ +int +parse_dir_fallback_line(const char *line, + int validate_only) +{ + int r = -1; + smartlist_t *items = smartlist_new(), *positional = smartlist_new(); + int orport = -1; + uint16_t dirport; + tor_addr_t addr; + int ok; + char id[DIGEST_LEN]; + char *address=NULL; + tor_addr_port_t ipv6_addrport, *ipv6_addrport_ptr = NULL; + double weight=1.0; + + memset(id, 0, sizeof(id)); + smartlist_split_string(items, line, NULL, + SPLIT_SKIP_SPACE|SPLIT_IGNORE_BLANK, -1); + SMARTLIST_FOREACH_BEGIN(items, const char *, cp) { + const char *eq = strchr(cp, '='); + ok = 1; + if (! eq) { + smartlist_add(positional, (char*)cp); + continue; + } + if (!strcmpstart(cp, "orport=")) { + orport = (int)tor_parse_long(cp+strlen("orport="), 10, + 1, 65535, &ok, NULL); + } else if (!strcmpstart(cp, "id=")) { + ok = base16_decode(id, DIGEST_LEN, cp+strlen("id="), + strlen(cp)-strlen("id=")) == DIGEST_LEN; + } else if (!strcasecmpstart(cp, "ipv6=")) { + if (ipv6_addrport_ptr) { + log_warn(LD_CONFIG, "Redundant ipv6 addr/port on FallbackDir line"); + } else { + if (tor_addr_port_parse(LOG_WARN, cp+strlen("ipv6="), + &ipv6_addrport.addr, &ipv6_addrport.port, + -1) < 0 + || tor_addr_family(&ipv6_addrport.addr) != AF_INET6) { + log_warn(LD_CONFIG, "Bad ipv6 addr/port %s on FallbackDir line", + escaped(cp)); + goto end; + } + ipv6_addrport_ptr = &ipv6_addrport; + } + } else if (!strcmpstart(cp, "weight=")) { + int num_ok; + const char *wstring = cp + strlen("weight="); + weight = tor_parse_double(wstring, 0, (double)UINT64_MAX, &num_ok, NULL); + if (!num_ok) { + log_warn(LD_CONFIG, "Invalid weight '%s' on FallbackDir line.", cp); + weight=1.0; + } + } + + if (!ok) { + log_warn(LD_CONFIG, "Bad FallbackDir option %s", escaped(cp)); + goto end; + } + } SMARTLIST_FOREACH_END(cp); + + if (smartlist_len(positional) != 1) { + log_warn(LD_CONFIG, "Couldn't parse FallbackDir line %s", escaped(line)); + goto end; + } + + if (tor_digest_is_zero(id)) { + log_warn(LD_CONFIG, "Missing identity on FallbackDir line"); + goto end; + } + + if (orport <= 0) { + log_warn(LD_CONFIG, "Missing orport on FallbackDir line"); + goto end; + } + + if (tor_addr_port_split(LOG_INFO, smartlist_get(positional, 0), + &address, &dirport) < 0 || + tor_addr_parse(&addr, address)<0) { + log_warn(LD_CONFIG, "Couldn't parse address:port %s on FallbackDir line", + (const char*)smartlist_get(positional, 0)); + goto end; + } + + if (!validate_only) { + dir_server_t *ds; + ds = fallback_dir_server_new(&addr, dirport, orport, ipv6_addrport_ptr, + id, weight); + if (!ds) { + log_warn(LD_CONFIG, "Couldn't create FallbackDir %s", escaped(line)); + goto end; + } + dir_server_add(ds); + } + + r = 0; + + end: + SMARTLIST_FOREACH(items, char *, cp, tor_free(cp)); + smartlist_free(items); + smartlist_free(positional); + tor_free(address); + return r; +} + +/** Allocate and return a new port_cfg_t with reasonable defaults. */ +STATIC port_cfg_t * +port_cfg_new(size_t namelen) +{ + tor_assert(namelen <= SIZE_T_CEILING - sizeof(port_cfg_t) - 1); + port_cfg_t *cfg = tor_malloc_zero(sizeof(port_cfg_t) + namelen + 1); + cfg->entry_cfg.ipv4_traffic = 1; + cfg->entry_cfg.ipv6_traffic = 1; + cfg->entry_cfg.dns_request = 1; + cfg->entry_cfg.onion_traffic = 1; + cfg->entry_cfg.prefer_ipv6_virtaddr = 1; + return cfg; +} + +/** Free all storage held in port */ +STATIC void +port_cfg_free_(port_cfg_t *port) +{ + tor_free(port); +} + +/** Warn for every port in ports of type listener_type that is + * on a publicly routable address. */ +static void +warn_nonlocal_client_ports(const smartlist_t *ports, + const char *portname, + const int listener_type) +{ + SMARTLIST_FOREACH_BEGIN(ports, const port_cfg_t *, port) { + if (port->type != listener_type) + continue; + if (port->is_unix_addr) { + /* Unix sockets aren't accessible over a network. */ + } else if (!tor_addr_is_internal(&port->addr, 1)) { + log_warn(LD_CONFIG, "You specified a public address '%s' for %sPort. " + "Other people on the Internet might find your computer and " + "use it as an open proxy. Please don't allow this unless you " + "have a good reason.", + fmt_addrport(&port->addr, port->port), portname); + } else if (!tor_addr_is_loopback(&port->addr)) { + log_notice(LD_CONFIG, "You configured a non-loopback address '%s' " + "for %sPort. This allows everybody on your local network to " + "use your machine as a proxy. Make sure this is what you " + "wanted.", + fmt_addrport(&port->addr, port->port), portname); + } + } SMARTLIST_FOREACH_END(port); +} + +/** Warn for every Extended ORPort port in ports that is on a + * publicly routable address. */ +static void +warn_nonlocal_ext_orports(const smartlist_t *ports, const char *portname) +{ + SMARTLIST_FOREACH_BEGIN(ports, const port_cfg_t *, port) { + if (port->type != CONN_TYPE_EXT_OR_LISTENER) + continue; + if (port->is_unix_addr) + continue; + /* XXX maybe warn even if address is RFC1918? */ + if (!tor_addr_is_internal(&port->addr, 1)) { + log_warn(LD_CONFIG, "You specified a public address '%s' for %sPort. " + "This is not advised; this address is supposed to only be " + "exposed on localhost so that your pluggable transport " + "proxies can connect to it.", + fmt_addrport(&port->addr, port->port), portname); + } + } SMARTLIST_FOREACH_END(port); +} + +/** Given a list of port_cfg_t in ports, warn if any controller port + * there is listening on any non-loopback address. If forbid_nonlocal + * is true, then emit a stronger warning and remove the port from the list. + */ +static void +warn_nonlocal_controller_ports(smartlist_t *ports, unsigned forbid_nonlocal) +{ + int warned = 0; + SMARTLIST_FOREACH_BEGIN(ports, port_cfg_t *, port) { + if (port->type != CONN_TYPE_CONTROL_LISTENER) + continue; + if (port->is_unix_addr) + continue; + if (!tor_addr_is_loopback(&port->addr)) { + if (forbid_nonlocal) { + if (!warned) + log_warn(LD_CONFIG, + "You have a ControlPort set to accept " + "unauthenticated connections from a non-local address. " + "This means that programs not running on your computer " + "can reconfigure your Tor, without even having to guess a " + "password. That's so bad that I'm closing your ControlPort " + "for you. If you need to control your Tor remotely, try " + "enabling authentication and using a tool like stunnel or " + "ssh to encrypt remote access."); + warned = 1; + port_cfg_free(port); + SMARTLIST_DEL_CURRENT(ports, port); + } else { + log_warn(LD_CONFIG, "You have a ControlPort set to accept " + "connections from a non-local address. This means that " + "programs not running on your computer can reconfigure your " + "Tor. That's pretty bad, since the controller " + "protocol isn't encrypted! Maybe you should just listen on " + "127.0.0.1 and use a tool like stunnel or ssh to encrypt " + "remote connections to your control port."); + return; /* No point in checking the rest */ + } + } + } SMARTLIST_FOREACH_END(port); +} + +/** + * Take a string (line) that begins with either an address:port, a + * port, or an AF_UNIX address, optionally quoted, prefixed with + * "unix:". Parse that line, and on success, set addrport_out to a new + * string containing the beginning portion (without prefix). Iff there was a + * unix: prefix, set is_unix_out to true. On success, also set + * rest_out to point to the part of the line after the address portion. + * + * Return 0 on success, -1 on failure. + */ +int +port_cfg_line_extract_addrport(const char *line, + char **addrport_out, + int *is_unix_out, + const char **rest_out) +{ + tor_assert(line); + tor_assert(addrport_out); + tor_assert(is_unix_out); + tor_assert(rest_out); + + line = eat_whitespace(line); + + if (!strcmpstart(line, unix_q_socket_prefix)) { + // It starts with unix:" + size_t sz; + *is_unix_out = 1; + *addrport_out = NULL; + line += strlen(unix_socket_prefix); /*No q: Keep the quote */ + *rest_out = unescape_string(line, addrport_out, &sz); + if (!*rest_out || (*addrport_out && sz != strlen(*addrport_out))) { + tor_free(*addrport_out); + return -1; + } + *rest_out = eat_whitespace(*rest_out); + return 0; + } else { + // Is there a unix: prefix? + if (!strcmpstart(line, unix_socket_prefix)) { + line += strlen(unix_socket_prefix); + *is_unix_out = 1; + } else { + *is_unix_out = 0; + } + + const char *end = find_whitespace(line); + if (BUG(!end)) { + end = strchr(line, '\0'); // LCOV_EXCL_LINE -- this can't be NULL + } + tor_assert(end && end >= line); + *addrport_out = tor_strndup(line, end - line); + *rest_out = eat_whitespace(end); + return 0; + } +} + +static void +warn_client_dns_cache(const char *option, int disabling) +{ + if (disabling) + return; + + warn_deprecated_option(option, + "Client-side DNS cacheing enables a wide variety of route-" + "capture attacks. If a single bad exit node lies to you about " + "an IP address, cacheing that address would make you visit " + "an address of the attacker's choice every time you connected " + "to your destination."); +} + +/** + * Validate the configured bridge distribution method from a BridgeDistribution + * config line. + * + * The input bd, is a string taken from the BridgeDistribution config + * line (if present). If the option wasn't set, return 0 immediately. The + * BridgeDistribution option is then validated. Currently valid, recognised + * options are: + * + * - "none" + * - "any" + * - "https" + * - "email" + * - "moat" + * - "hyphae" + * + * If the option string is unrecognised, a warning will be logged and 0 is + * returned. If the option string contains an invalid character, -1 is + * returned. + **/ +STATIC int +check_bridge_distribution_setting(const char *bd) +{ + if (bd == NULL) + return 0; + + const char *RECOGNIZED[] = { + "none", "any", "https", "email", "moat", "hyphae" + }; + unsigned i; + for (i = 0; i < ARRAY_LENGTH(RECOGNIZED); ++i) { + if (!strcmp(bd, RECOGNIZED[i])) + return 0; + } + + const char *cp = bd; + // Method = (KeywordChar | "_") + + while (TOR_ISALNUM(*cp) || *cp == '-' || *cp == '_') + ++cp; + + if (*cp == 0) { + log_warn(LD_CONFIG, "Unrecognized BridgeDistribution value %s. I'll " + "assume you know what you are doing...", escaped(bd)); + return 0; // we reached the end of the string; all is well + } else { + return -1; // we found a bad character in the string. + } +} + +/** + * Parse port configuration for a single port type. + * + * Read entries of the "FooPort" type from the list ports. Syntax is + * that FooPort can have any number of entries of the format + * "[Address:][Port] IsolationOptions". + * + * In log messages, describe the port type as portname. + * + * If no address is specified, default to defaultaddr. If no + * FooPort is given, default to defaultport (if 0, there is no default). + * + * If CL_PORT_NO_STREAM_OPTIONS is set in flags, do not allow stream + * isolation options in the FooPort entries. + * + * If CL_PORT_WARN_NONLOCAL is set in flags, warn if any of the + * ports are not on a local address. If CL_PORT_FORBID_NONLOCAL is set, + * this is a control port with no password set: don't even allow it. + * + * If CL_PORT_SERVER_OPTIONS is set in flags, do not allow stream + * isolation options in the FooPort entries; instead allow the + * server-port option set. + * + * If CL_PORT_TAKES_HOSTNAMES is set in flags, allow the options + * {No,}IPv{4,6}Traffic. + * + * On success, if out is given, add a new port_cfg_t entry to + * out for every port that the client should listen on. Return 0 + * on success, -1 on failure. + */ +STATIC int +parse_port_config(smartlist_t *out, + const config_line_t *ports, + const char *portname, + int listener_type, + const char *defaultaddr, + int defaultport, + const unsigned flags) +{ + smartlist_t *elts; + int retval = -1; + const unsigned is_control = (listener_type == CONN_TYPE_CONTROL_LISTENER); + const unsigned is_ext_orport = (listener_type == CONN_TYPE_EXT_OR_LISTENER); + const unsigned allow_no_stream_options = flags & CL_PORT_NO_STREAM_OPTIONS; + const unsigned use_server_options = flags & CL_PORT_SERVER_OPTIONS; + const unsigned warn_nonlocal = flags & CL_PORT_WARN_NONLOCAL; + const unsigned forbid_nonlocal = flags & CL_PORT_FORBID_NONLOCAL; + const unsigned default_to_group_writable = + flags & CL_PORT_DFLT_GROUP_WRITABLE; + const unsigned takes_hostnames = flags & CL_PORT_TAKES_HOSTNAMES; + const unsigned is_unix_socket = flags & CL_PORT_IS_UNIXSOCKET; + int got_zero_port=0, got_nonzero_port=0; + char *unix_socket_path = NULL; + + /* If there's no FooPort, then maybe make a default one. */ + if (! ports) { + if (defaultport && defaultaddr && out) { + port_cfg_t *cfg = port_cfg_new(is_unix_socket ? strlen(defaultaddr) : 0); + cfg->type = listener_type; + if (is_unix_socket) { + tor_addr_make_unspec(&cfg->addr); + memcpy(cfg->unix_addr, defaultaddr, strlen(defaultaddr) + 1); + cfg->is_unix_addr = 1; + } else { + cfg->port = defaultport; + tor_addr_parse(&cfg->addr, defaultaddr); + } + cfg->entry_cfg.session_group = SESSION_GROUP_UNSET; + cfg->entry_cfg.isolation_flags = ISO_DEFAULT; + smartlist_add(out, cfg); + } + return 0; + } + + /* At last we can actually parse the FooPort lines. The syntax is: + * [Addr:](Port|auto) [Options].*/ + elts = smartlist_new(); + char *addrport = NULL; + + for (; ports; ports = ports->next) { + tor_addr_t addr; + int port; + int sessiongroup = SESSION_GROUP_UNSET; + unsigned isolation = ISO_DEFAULT; + int prefer_no_auth = 0; + int socks_iso_keep_alive = 0; + + uint16_t ptmp=0; + int ok; + /* This must be kept in sync with port_cfg_new's defaults */ + int no_listen = 0, no_advertise = 0, all_addrs = 0, + bind_ipv4_only = 0, bind_ipv6_only = 0, + ipv4_traffic = 1, ipv6_traffic = 1, prefer_ipv6 = 0, dns_request = 1, + onion_traffic = 1, + cache_ipv4 = 0, use_cached_ipv4 = 0, + cache_ipv6 = 0, use_cached_ipv6 = 0, + prefer_ipv6_automap = 1, world_writable = 0, group_writable = 0, + relax_dirmode_check = 0, + has_used_unix_socket_only_option = 0; + + int is_unix_tagged_addr = 0; + const char *rest_of_line = NULL; + if (port_cfg_line_extract_addrport(ports->value, + &addrport, &is_unix_tagged_addr, &rest_of_line)<0) { + log_warn(LD_CONFIG, "Invalid %sPort line with unparsable address", + portname); + goto err; + } + if (strlen(addrport) == 0) { + log_warn(LD_CONFIG, "Invalid %sPort line with no address", portname); + goto err; + } + + /* Split the remainder... */ + smartlist_split_string(elts, rest_of_line, NULL, + SPLIT_SKIP_SPACE|SPLIT_IGNORE_BLANK, 0); + + /* Let's start to check if it's a Unix socket path. */ + if (is_unix_tagged_addr) { +#ifndef HAVE_SYS_UN_H + log_warn(LD_CONFIG, "Unix sockets not supported on this system."); + goto err; +#endif + unix_socket_path = addrport; + addrport = NULL; + } + + if (unix_socket_path && + ! conn_listener_type_supports_af_unix(listener_type)) { + log_warn(LD_CONFIG, "%sPort does not support unix sockets", portname); + goto err; + } + + if (unix_socket_path) { + port = 1; + } else if (is_unix_socket) { + if (BUG(!addrport)) + goto err; // LCOV_EXCL_LINE unreachable, but coverity can't tell that + unix_socket_path = tor_strdup(addrport); + if (!strcmp(addrport, "0")) + port = 0; + else + port = 1; + } else if (!strcmp(addrport, "auto")) { + port = CFG_AUTO_PORT; + int af = tor_addr_parse(&addr, defaultaddr); + tor_assert(af >= 0); + } else if (!strcasecmpend(addrport, ":auto")) { + char *addrtmp = tor_strndup(addrport, strlen(addrport)-5); + port = CFG_AUTO_PORT; + if (tor_addr_port_lookup(addrtmp, &addr, &ptmp)<0 || ptmp) { + log_warn(LD_CONFIG, "Invalid address '%s' for %sPort", + escaped(addrport), portname); + tor_free(addrtmp); + goto err; + } + tor_free(addrtmp); + } else { + /* Try parsing integer port before address, because, who knows? + "9050" might be a valid address. */ + port = (int) tor_parse_long(addrport, 10, 0, 65535, &ok, NULL); + if (ok) { + int af = tor_addr_parse(&addr, defaultaddr); + tor_assert(af >= 0); + } else if (tor_addr_port_lookup(addrport, &addr, &ptmp) == 0) { + if (ptmp == 0) { + log_warn(LD_CONFIG, "%sPort line has address but no port", portname); + goto err; + } + port = ptmp; + } else { + log_warn(LD_CONFIG, "Couldn't parse address %s for %sPort", + escaped(addrport), portname); + goto err; + } + } + + if (unix_socket_path && default_to_group_writable) + group_writable = 1; + + /* Now parse the rest of the options, if any. */ + if (use_server_options) { + /* This is a server port; parse advertising options */ + SMARTLIST_FOREACH_BEGIN(elts, char *, elt) { + if (!strcasecmp(elt, "NoAdvertise")) { + no_advertise = 1; + } else if (!strcasecmp(elt, "NoListen")) { + no_listen = 1; +#if 0 + /* not implemented yet. */ + } else if (!strcasecmp(elt, "AllAddrs")) { + + all_addrs = 1; +#endif /* 0 */ + } else if (!strcasecmp(elt, "IPv4Only")) { + bind_ipv4_only = 1; + } else if (!strcasecmp(elt, "IPv6Only")) { + bind_ipv6_only = 1; + } else { + log_warn(LD_CONFIG, "Unrecognized %sPort option '%s'", + portname, escaped(elt)); + } + } SMARTLIST_FOREACH_END(elt); + + if (no_advertise && no_listen) { + log_warn(LD_CONFIG, "Tried to set both NoListen and NoAdvertise " + "on %sPort line '%s'", + portname, escaped(ports->value)); + goto err; + } + if (bind_ipv4_only && bind_ipv6_only) { + log_warn(LD_CONFIG, "Tried to set both IPv4Only and IPv6Only " + "on %sPort line '%s'", + portname, escaped(ports->value)); + goto err; + } + if (bind_ipv4_only && tor_addr_family(&addr) == AF_INET6) { + log_warn(LD_CONFIG, "Could not interpret %sPort address as IPv6", + portname); + goto err; + } + if (bind_ipv6_only && tor_addr_family(&addr) == AF_INET) { + log_warn(LD_CONFIG, "Could not interpret %sPort address as IPv4", + portname); + goto err; + } + } else { + /* This is a client port; parse isolation options */ + SMARTLIST_FOREACH_BEGIN(elts, char *, elt) { + int no = 0, isoflag = 0; + const char *elt_orig = elt; + + if (!strcasecmpstart(elt, "SessionGroup=")) { + int group = (int)tor_parse_long(elt+strlen("SessionGroup="), + 10, 0, INT_MAX, &ok, NULL); + if (!ok || !allow_no_stream_options) { + log_warn(LD_CONFIG, "Invalid %sPort option '%s'", + portname, escaped(elt)); + goto err; + } + if (sessiongroup >= 0) { + log_warn(LD_CONFIG, "Multiple SessionGroup options on %sPort", + portname); + goto err; + } + sessiongroup = group; + continue; + } + + if (!strcasecmpstart(elt, "No")) { + no = 1; + elt += 2; + } + + if (!strcasecmp(elt, "GroupWritable")) { + group_writable = !no; + has_used_unix_socket_only_option = 1; + continue; + } else if (!strcasecmp(elt, "WorldWritable")) { + world_writable = !no; + has_used_unix_socket_only_option = 1; + continue; + } else if (!strcasecmp(elt, "RelaxDirModeCheck")) { + relax_dirmode_check = !no; + has_used_unix_socket_only_option = 1; + continue; + } + + if (allow_no_stream_options) { + log_warn(LD_CONFIG, "Unrecognized %sPort option '%s'", + portname, escaped(elt)); + continue; + } + + if (takes_hostnames) { + if (!strcasecmp(elt, "IPv4Traffic")) { + ipv4_traffic = ! no; + continue; + } else if (!strcasecmp(elt, "IPv6Traffic")) { + ipv6_traffic = ! no; + continue; + } else if (!strcasecmp(elt, "PreferIPv6")) { + prefer_ipv6 = ! no; + continue; + } else if (!strcasecmp(elt, "DNSRequest")) { + dns_request = ! no; + continue; + } else if (!strcasecmp(elt, "OnionTraffic")) { + onion_traffic = ! no; + continue; + } else if (!strcasecmp(elt, "OnionTrafficOnly")) { + /* Only connect to .onion addresses. Equivalent to + * NoDNSRequest, NoIPv4Traffic, NoIPv6Traffic. The option + * NoOnionTrafficOnly is not supported, it's too confusing. */ + if (no) { + log_warn(LD_CONFIG, "Unsupported %sPort option 'No%s'. Use " + "DNSRequest, IPv4Traffic, and/or IPv6Traffic instead.", + portname, escaped(elt)); + } else { + ipv4_traffic = ipv6_traffic = dns_request = 0; + } + continue; + } + } + if (!strcasecmp(elt, "CacheIPv4DNS")) { + warn_client_dns_cache(elt, no); // since 0.2.9.2-alpha + cache_ipv4 = ! no; + continue; + } else if (!strcasecmp(elt, "CacheIPv6DNS")) { + warn_client_dns_cache(elt, no); // since 0.2.9.2-alpha + cache_ipv6 = ! no; + continue; + } else if (!strcasecmp(elt, "CacheDNS")) { + warn_client_dns_cache(elt, no); // since 0.2.9.2-alpha + cache_ipv4 = cache_ipv6 = ! no; + continue; + } else if (!strcasecmp(elt, "UseIPv4Cache")) { + warn_client_dns_cache(elt, no); // since 0.2.9.2-alpha + use_cached_ipv4 = ! no; + continue; + } else if (!strcasecmp(elt, "UseIPv6Cache")) { + warn_client_dns_cache(elt, no); // since 0.2.9.2-alpha + use_cached_ipv6 = ! no; + continue; + } else if (!strcasecmp(elt, "UseDNSCache")) { + warn_client_dns_cache(elt, no); // since 0.2.9.2-alpha + use_cached_ipv4 = use_cached_ipv6 = ! no; + continue; + } else if (!strcasecmp(elt, "PreferIPv6Automap")) { + prefer_ipv6_automap = ! no; + continue; + } else if (!strcasecmp(elt, "PreferSOCKSNoAuth")) { + prefer_no_auth = ! no; + continue; + } else if (!strcasecmp(elt, "KeepAliveIsolateSOCKSAuth")) { + socks_iso_keep_alive = ! no; + continue; + } + + if (!strcasecmpend(elt, "s")) + elt[strlen(elt)-1] = '\0'; /* kill plurals. */ + + if (!strcasecmp(elt, "IsolateDestPort")) { + isoflag = ISO_DESTPORT; + } else if (!strcasecmp(elt, "IsolateDestAddr")) { + isoflag = ISO_DESTADDR; + } else if (!strcasecmp(elt, "IsolateSOCKSAuth")) { + isoflag = ISO_SOCKSAUTH; + } else if (!strcasecmp(elt, "IsolateClientProtocol")) { + isoflag = ISO_CLIENTPROTO; + } else if (!strcasecmp(elt, "IsolateClientAddr")) { + isoflag = ISO_CLIENTADDR; + } else { + log_warn(LD_CONFIG, "Unrecognized %sPort option '%s'", + portname, escaped(elt_orig)); + } + + if (no) { + isolation &= ~isoflag; + } else { + isolation |= isoflag; + } + } SMARTLIST_FOREACH_END(elt); + } + + if (port) + got_nonzero_port = 1; + else + got_zero_port = 1; + + if (dns_request == 0 && listener_type == CONN_TYPE_AP_DNS_LISTENER) { + log_warn(LD_CONFIG, "You have a %sPort entry with DNS disabled; that " + "won't work.", portname); + goto err; + } + + if (ipv4_traffic == 0 && ipv6_traffic == 0 && onion_traffic == 0 + && listener_type != CONN_TYPE_AP_DNS_LISTENER) { + log_warn(LD_CONFIG, "You have a %sPort entry with all of IPv4 and " + "IPv6 and .onion disabled; that won't work.", portname); + goto err; + } + + if (dns_request == 1 && ipv4_traffic == 0 && ipv6_traffic == 0 + && listener_type != CONN_TYPE_AP_DNS_LISTENER) { + log_warn(LD_CONFIG, "You have a %sPort entry with DNSRequest enabled, " + "but IPv4 and IPv6 disabled; DNS-based sites won't work.", + portname); + goto err; + } + + if ( has_used_unix_socket_only_option && ! unix_socket_path) { + log_warn(LD_CONFIG, "You have a %sPort entry with GroupWritable, " + "WorldWritable, or RelaxDirModeCheck, but it is not a " + "unix socket.", portname); + goto err; + } + + if (!(isolation & ISO_SOCKSAUTH) && socks_iso_keep_alive) { + log_warn(LD_CONFIG, "You have a %sPort entry with both " + "NoIsolateSOCKSAuth and KeepAliveIsolateSOCKSAuth set.", + portname); + goto err; + } + + if (unix_socket_path && (isolation & ISO_CLIENTADDR)) { + /* `IsolateClientAddr` is nonsensical in the context of AF_LOCAL. + * just silently remove the isolation flag. + */ + isolation &= ~ISO_CLIENTADDR; + } + + if (out && port) { + size_t namelen = unix_socket_path ? strlen(unix_socket_path) : 0; + port_cfg_t *cfg = port_cfg_new(namelen); + if (unix_socket_path) { + tor_addr_make_unspec(&cfg->addr); + memcpy(cfg->unix_addr, unix_socket_path, namelen + 1); + cfg->is_unix_addr = 1; + tor_free(unix_socket_path); + } else { + tor_addr_copy(&cfg->addr, &addr); + cfg->port = port; + } + cfg->type = listener_type; + cfg->is_world_writable = world_writable; + cfg->is_group_writable = group_writable; + cfg->relax_dirmode_check = relax_dirmode_check; + cfg->entry_cfg.isolation_flags = isolation; + cfg->entry_cfg.session_group = sessiongroup; + cfg->server_cfg.no_advertise = no_advertise; + cfg->server_cfg.no_listen = no_listen; + cfg->server_cfg.all_addrs = all_addrs; + cfg->server_cfg.bind_ipv4_only = bind_ipv4_only; + cfg->server_cfg.bind_ipv6_only = bind_ipv6_only; + cfg->entry_cfg.ipv4_traffic = ipv4_traffic; + cfg->entry_cfg.ipv6_traffic = ipv6_traffic; + cfg->entry_cfg.prefer_ipv6 = prefer_ipv6; + cfg->entry_cfg.dns_request = dns_request; + cfg->entry_cfg.onion_traffic = onion_traffic; + cfg->entry_cfg.cache_ipv4_answers = cache_ipv4; + cfg->entry_cfg.cache_ipv6_answers = cache_ipv6; + cfg->entry_cfg.use_cached_ipv4_answers = use_cached_ipv4; + cfg->entry_cfg.use_cached_ipv6_answers = use_cached_ipv6; + cfg->entry_cfg.prefer_ipv6_virtaddr = prefer_ipv6_automap; + cfg->entry_cfg.socks_prefer_no_auth = prefer_no_auth; + if (! (isolation & ISO_SOCKSAUTH)) + cfg->entry_cfg.socks_prefer_no_auth = 1; + cfg->entry_cfg.socks_iso_keep_alive = socks_iso_keep_alive; + + smartlist_add(out, cfg); + } + SMARTLIST_FOREACH(elts, char *, cp, tor_free(cp)); + smartlist_clear(elts); + tor_free(addrport); + tor_free(unix_socket_path); + } + + if (warn_nonlocal && out) { + if (is_control) + warn_nonlocal_controller_ports(out, forbid_nonlocal); + else if (is_ext_orport) + warn_nonlocal_ext_orports(out, portname); + else + warn_nonlocal_client_ports(out, portname, listener_type); + } + + if (got_zero_port && got_nonzero_port) { + log_warn(LD_CONFIG, "You specified a nonzero %sPort along with '%sPort 0' " + "in the same configuration. Did you mean to disable %sPort or " + "not?", portname, portname, portname); + goto err; + } + + retval = 0; + err: + SMARTLIST_FOREACH(elts, char *, cp, tor_free(cp)); + smartlist_free(elts); + tor_free(unix_socket_path); + tor_free(addrport); + return retval; +} + +/** Return the number of ports which are actually going to listen with type + * listenertype. Do not count no_listen ports. Only count unix + * sockets if count_sockets is true. */ +static int +count_real_listeners(const smartlist_t *ports, int listenertype, + int count_sockets) +{ + int n = 0; + SMARTLIST_FOREACH_BEGIN(ports, port_cfg_t *, port) { + if (port->server_cfg.no_listen) + continue; + if (!count_sockets && port->is_unix_addr) + continue; + if (port->type != listenertype) + continue; + ++n; + } SMARTLIST_FOREACH_END(port); + return n; +} + +/** Parse all ports from options. On success, set *n_ports_out + * to the number of ports that are listed, update the *Port_set values in + * options, and return 0. On failure, set *msg to a + * description of the problem and return -1. + * + * If validate_only is false, set configured_client_ports to the + * new list of ports parsed from options. + **/ +static int +parse_ports(or_options_t *options, int validate_only, + char **msg, int *n_ports_out, + int *world_writable_control_socket) +{ + smartlist_t *ports; + int retval = -1; + + ports = smartlist_new(); + + *n_ports_out = 0; + + const unsigned gw_flag = options->UnixSocksGroupWritable ? + CL_PORT_DFLT_GROUP_WRITABLE : 0; + if (parse_port_config(ports, + options->SocksPort_lines, + "Socks", CONN_TYPE_AP_LISTENER, + "127.0.0.1", 9050, + ((validate_only ? 0 : CL_PORT_WARN_NONLOCAL) + | CL_PORT_TAKES_HOSTNAMES | gw_flag)) < 0) { + *msg = tor_strdup("Invalid SocksPort configuration"); + goto err; + } + if (parse_port_config(ports, + options->DNSPort_lines, + "DNS", CONN_TYPE_AP_DNS_LISTENER, + "127.0.0.1", 0, + CL_PORT_WARN_NONLOCAL|CL_PORT_TAKES_HOSTNAMES) < 0) { + *msg = tor_strdup("Invalid DNSPort configuration"); + goto err; + } + if (parse_port_config(ports, + options->TransPort_lines, + "Trans", CONN_TYPE_AP_TRANS_LISTENER, + "127.0.0.1", 0, + CL_PORT_WARN_NONLOCAL) < 0) { + *msg = tor_strdup("Invalid TransPort configuration"); + goto err; + } + if (parse_port_config(ports, + options->NATDPort_lines, + "NATD", CONN_TYPE_AP_NATD_LISTENER, + "127.0.0.1", 0, + CL_PORT_WARN_NONLOCAL) < 0) { + *msg = tor_strdup("Invalid NatdPort configuration"); + goto err; + } + if (parse_port_config(ports, + options->HTTPTunnelPort_lines, + "HTTP Tunnel", CONN_TYPE_AP_HTTP_CONNECT_LISTENER, + "127.0.0.1", 0, + ((validate_only ? 0 : CL_PORT_WARN_NONLOCAL) + | CL_PORT_TAKES_HOSTNAMES | gw_flag)) < 0) { + *msg = tor_strdup("Invalid HTTPTunnelPort configuration"); + goto err; + } + { + unsigned control_port_flags = CL_PORT_NO_STREAM_OPTIONS | + CL_PORT_WARN_NONLOCAL; + const int any_passwords = (options->HashedControlPassword || + options->HashedControlSessionPassword || + options->CookieAuthentication); + if (! any_passwords) + control_port_flags |= CL_PORT_FORBID_NONLOCAL; + if (options->ControlSocketsGroupWritable) + control_port_flags |= CL_PORT_DFLT_GROUP_WRITABLE; + + if (parse_port_config(ports, + options->ControlPort_lines, + "Control", CONN_TYPE_CONTROL_LISTENER, + "127.0.0.1", 0, + control_port_flags) < 0) { + *msg = tor_strdup("Invalid ControlPort configuration"); + goto err; + } + + if (parse_port_config(ports, options->ControlSocket, + "ControlSocket", + CONN_TYPE_CONTROL_LISTENER, NULL, 0, + control_port_flags | CL_PORT_IS_UNIXSOCKET) < 0) { + *msg = tor_strdup("Invalid ControlSocket configuration"); + goto err; + } + } + if (! options->ClientOnly) { + if (parse_port_config(ports, + options->ORPort_lines, + "OR", CONN_TYPE_OR_LISTENER, + "0.0.0.0", 0, + CL_PORT_SERVER_OPTIONS) < 0) { + *msg = tor_strdup("Invalid ORPort configuration"); + goto err; + } + if (parse_port_config(ports, + options->ExtORPort_lines, + "ExtOR", CONN_TYPE_EXT_OR_LISTENER, + "127.0.0.1", 0, + CL_PORT_SERVER_OPTIONS|CL_PORT_WARN_NONLOCAL) < 0) { + *msg = tor_strdup("Invalid ExtORPort configuration"); + goto err; + } + if (parse_port_config(ports, + options->DirPort_lines, + "Dir", CONN_TYPE_DIR_LISTENER, + "0.0.0.0", 0, + CL_PORT_SERVER_OPTIONS) < 0) { + *msg = tor_strdup("Invalid DirPort configuration"); + goto err; + } + } + + int n_low_ports = 0; + if (check_server_ports(ports, options, &n_low_ports) < 0) { + *msg = tor_strdup("Misconfigured server ports"); + goto err; + } + if (have_low_ports < 0) + have_low_ports = (n_low_ports > 0); + + *n_ports_out = smartlist_len(ports); + + retval = 0; + + /* Update the *Port_set options. The !! here is to force a boolean out of + an integer. */ + options->ORPort_set = + !! count_real_listeners(ports, CONN_TYPE_OR_LISTENER, 0); + options->SocksPort_set = + !! count_real_listeners(ports, CONN_TYPE_AP_LISTENER, 1); + options->TransPort_set = + !! count_real_listeners(ports, CONN_TYPE_AP_TRANS_LISTENER, 1); + options->NATDPort_set = + !! count_real_listeners(ports, CONN_TYPE_AP_NATD_LISTENER, 1); + options->HTTPTunnelPort_set = + !! count_real_listeners(ports, CONN_TYPE_AP_HTTP_CONNECT_LISTENER, 1); + /* Use options->ControlSocket to test if a control socket is set */ + options->ControlPort_set = + !! count_real_listeners(ports, CONN_TYPE_CONTROL_LISTENER, 0); + options->DirPort_set = + !! count_real_listeners(ports, CONN_TYPE_DIR_LISTENER, 0); + options->DNSPort_set = + !! count_real_listeners(ports, CONN_TYPE_AP_DNS_LISTENER, 1); + options->ExtORPort_set = + !! count_real_listeners(ports, CONN_TYPE_EXT_OR_LISTENER, 0); + + if (world_writable_control_socket) { + SMARTLIST_FOREACH(ports, port_cfg_t *, p, + if (p->type == CONN_TYPE_CONTROL_LISTENER && + p->is_unix_addr && + p->is_world_writable) { + *world_writable_control_socket = 1; + break; + }); + } + + if (!validate_only) { + if (configured_ports) { + SMARTLIST_FOREACH(configured_ports, + port_cfg_t *, p, port_cfg_free(p)); + smartlist_free(configured_ports); + } + configured_ports = ports; + ports = NULL; /* prevent free below. */ + } + + err: + if (ports) { + SMARTLIST_FOREACH(ports, port_cfg_t *, p, port_cfg_free(p)); + smartlist_free(ports); + } + return retval; +} + +/* Does port bind to IPv4? */ +static int +port_binds_ipv4(const port_cfg_t *port) +{ + return tor_addr_family(&port->addr) == AF_INET || + (tor_addr_family(&port->addr) == AF_UNSPEC + && !port->server_cfg.bind_ipv6_only); +} + +/* Does port bind to IPv6? */ +static int +port_binds_ipv6(const port_cfg_t *port) +{ + return tor_addr_family(&port->addr) == AF_INET6 || + (tor_addr_family(&port->addr) == AF_UNSPEC + && !port->server_cfg.bind_ipv4_only); +} + +/** Given a list of port_cfg_t in ports, check them for internal + * consistency and warn as appropriate. Set *n_low_ports_out to the + * number of sub-1024 ports we will be binding. */ +static int +check_server_ports(const smartlist_t *ports, + const or_options_t *options, + int *n_low_ports_out) +{ + int n_orport_advertised = 0; + int n_orport_advertised_ipv4 = 0; + int n_orport_listeners = 0; + int n_dirport_advertised = 0; + int n_dirport_listeners = 0; + int n_low_port = 0; + int r = 0; + + SMARTLIST_FOREACH_BEGIN(ports, const port_cfg_t *, port) { + if (port->type == CONN_TYPE_DIR_LISTENER) { + if (! port->server_cfg.no_advertise) + ++n_dirport_advertised; + if (! port->server_cfg.no_listen) + ++n_dirport_listeners; + } else if (port->type == CONN_TYPE_OR_LISTENER) { + if (! port->server_cfg.no_advertise) { + ++n_orport_advertised; + if (port_binds_ipv4(port)) + ++n_orport_advertised_ipv4; + } + if (! port->server_cfg.no_listen) + ++n_orport_listeners; + } else { + continue; + } +#ifndef _WIN32 + if (!port->server_cfg.no_listen && port->port < 1024) + ++n_low_port; +#endif + } SMARTLIST_FOREACH_END(port); + + if (n_orport_advertised && !n_orport_listeners) { + log_warn(LD_CONFIG, "We are advertising an ORPort, but not actually " + "listening on one."); + r = -1; + } + if (n_orport_listeners && !n_orport_advertised) { + log_warn(LD_CONFIG, "We are listening on an ORPort, but not advertising " + "any ORPorts. This will keep us from building a %s " + "descriptor, and make us impossible to use.", + options->BridgeRelay ? "bridge" : "router"); + r = -1; + } + if (n_dirport_advertised && !n_dirport_listeners) { + log_warn(LD_CONFIG, "We are advertising a DirPort, but not actually " + "listening on one."); + r = -1; + } + if (n_dirport_advertised > 1) { + log_warn(LD_CONFIG, "Can't advertise more than one DirPort."); + r = -1; + } + if (n_orport_advertised && !n_orport_advertised_ipv4 && + !options->BridgeRelay) { + log_warn(LD_CONFIG, "Configured non-bridge only to listen on an IPv6 " + "address."); + r = -1; + } + + if (n_low_port && options->AccountingMax && + (!have_capability_support() || options->KeepBindCapabilities == 0)) { + const char *extra = ""; + if (options->KeepBindCapabilities == 0 && have_capability_support()) + extra = ", and you have disabled KeepBindCapabilities."; + log_warn(LD_CONFIG, + "You have set AccountingMax to use hibernation. You have also " + "chosen a low DirPort or OrPort%s." + "This combination can make Tor stop " + "working when it tries to re-attach the port after a period of " + "hibernation. Please choose a different port or turn off " + "hibernation unless you know this combination will work on your " + "platform.", extra); + } + + if (n_low_ports_out) + *n_low_ports_out = n_low_port; + + return r; +} + +/** Return a list of port_cfg_t for client ports parsed from the + * options. */ +MOCK_IMPL(const smartlist_t *, +get_configured_ports,(void)) +{ + if (!configured_ports) + configured_ports = smartlist_new(); + return configured_ports; +} + +/** Return an address:port string representation of the address + * where the first listener_type listener waits for + * connections. Return NULL if we couldn't find a listener. The + * string is allocated on the heap and it's the responsibility of the + * caller to free it after use. + * + * This function is meant to be used by the pluggable transport proxy + * spawning code, please make sure that it fits your purposes before + * using it. */ +char * +get_first_listener_addrport_string(int listener_type) +{ + static const char *ipv4_localhost = "127.0.0.1"; + static const char *ipv6_localhost = "[::1]"; + const char *address; + uint16_t port; + char *string = NULL; + + if (!configured_ports) + return NULL; + + SMARTLIST_FOREACH_BEGIN(configured_ports, const port_cfg_t *, cfg) { + if (cfg->server_cfg.no_listen) + continue; + + if (cfg->type == listener_type && + tor_addr_family(&cfg->addr) != AF_UNSPEC) { + + /* We found the first listener of the type we are interested in! */ + + /* If a listener is listening on INADDR_ANY, assume that it's + also listening on 127.0.0.1, and point the transport proxy + there: */ + if (tor_addr_is_null(&cfg->addr)) + address = tor_addr_is_v4(&cfg->addr) ? ipv4_localhost : ipv6_localhost; + else + address = fmt_and_decorate_addr(&cfg->addr); + + /* If a listener is configured with port 'auto', we are forced + to iterate all listener connections and find out in which + port it ended up listening: */ + if (cfg->port == CFG_AUTO_PORT) { + port = router_get_active_listener_port_by_type_af(listener_type, + tor_addr_family(&cfg->addr)); + if (!port) + return NULL; + } else { + port = cfg->port; + } + + tor_asprintf(&string, "%s:%u", address, port); + + return string; + } + + } SMARTLIST_FOREACH_END(cfg); + + return NULL; +} + +/** Return the first advertised port of type listener_type in + * address_family. Returns 0 when no port is found, and when passed + * AF_UNSPEC. */ +int +get_first_advertised_port_by_type_af(int listener_type, int address_family) +{ + if (address_family == AF_UNSPEC) + return 0; + + const smartlist_t *conf_ports = get_configured_ports(); + SMARTLIST_FOREACH_BEGIN(conf_ports, const port_cfg_t *, cfg) { + if (cfg->type == listener_type && + !cfg->server_cfg.no_advertise) { + if ((address_family == AF_INET && port_binds_ipv4(cfg)) || + (address_family == AF_INET6 && port_binds_ipv6(cfg))) { + return cfg->port; + } + } + } SMARTLIST_FOREACH_END(cfg); + return 0; +} + +/** Return the first advertised address of type listener_type in + * address_family. Returns NULL if there is no advertised address, + * and when passed AF_UNSPEC. */ +const tor_addr_t * +get_first_advertised_addr_by_type_af(int listener_type, int address_family) +{ + if (address_family == AF_UNSPEC) + return NULL; + if (!configured_ports) + return NULL; + SMARTLIST_FOREACH_BEGIN(configured_ports, const port_cfg_t *, cfg) { + if (cfg->type == listener_type && + !cfg->server_cfg.no_advertise) { + if ((address_family == AF_INET && port_binds_ipv4(cfg)) || + (address_family == AF_INET6 && port_binds_ipv6(cfg))) { + return &cfg->addr; + } + } + } SMARTLIST_FOREACH_END(cfg); + return NULL; +} + +/** Return 1 if a port exists of type listener_type on addr and + * port. If check_wildcard is true, INADDR[6]_ANY and AF_UNSPEC + * addresses match any address of the appropriate family; and port -1 matches + * any port. + * To match auto ports, pass CFG_PORT_AUTO. (Does not match on the actual + * automatically chosen listener ports.) */ +int +port_exists_by_type_addr_port(int listener_type, const tor_addr_t *addr, + int port, int check_wildcard) +{ + if (!configured_ports || !addr) + return 0; + SMARTLIST_FOREACH_BEGIN(configured_ports, const port_cfg_t *, cfg) { + if (cfg->type == listener_type) { + if (cfg->port == port || (check_wildcard && port == -1)) { + /* Exact match */ + if (tor_addr_eq(&cfg->addr, addr)) { + return 1; + } + /* Skip wildcard matches if we're not doing them */ + if (!check_wildcard) { + continue; + } + /* Wildcard matches IPv4 */ + const int cfg_v4 = port_binds_ipv4(cfg); + const int cfg_any_v4 = tor_addr_is_null(&cfg->addr) && cfg_v4; + const int addr_v4 = tor_addr_family(addr) == AF_INET || + tor_addr_family(addr) == AF_UNSPEC; + const int addr_any_v4 = tor_addr_is_null(&cfg->addr) && addr_v4; + if ((cfg_any_v4 && addr_v4) || (cfg_v4 && addr_any_v4)) { + return 1; + } + /* Wildcard matches IPv6 */ + const int cfg_v6 = port_binds_ipv6(cfg); + const int cfg_any_v6 = tor_addr_is_null(&cfg->addr) && cfg_v6; + const int addr_v6 = tor_addr_family(addr) == AF_INET6 || + tor_addr_family(addr) == AF_UNSPEC; + const int addr_any_v6 = tor_addr_is_null(&cfg->addr) && addr_v6; + if ((cfg_any_v6 && addr_v6) || (cfg_v6 && addr_any_v6)) { + return 1; + } + } + } + } SMARTLIST_FOREACH_END(cfg); + return 0; +} + +/* Like port_exists_by_type_addr_port, but accepts a host-order IPv4 address + * instead. */ +int +port_exists_by_type_addr32h_port(int listener_type, uint32_t addr_ipv4h, + int port, int check_wildcard) +{ + tor_addr_t ipv4; + tor_addr_from_ipv4h(&ipv4, addr_ipv4h); + return port_exists_by_type_addr_port(listener_type, &ipv4, port, + check_wildcard); +} + +/** Allocate and return a good value for the DataDirectory based on + * val, which may be NULL. Return NULL on failure. */ +static char * +get_data_directory(const char *val) +{ +#ifdef _WIN32 + if (val) { + return tor_strdup(val); + } else { + return tor_strdup(get_windows_conf_root()); + } +#else /* !(defined(_WIN32)) */ + const char *d = val; + if (!d) + d = "~/.tor"; + + if (!strcmpstart(d, "~/")) { + char *fn = expand_filename(d); + if (!fn) { + log_warn(LD_CONFIG,"Failed to expand filename \"%s\".", d); + return NULL; + } + if (!val && !strcmp(fn,"/.tor")) { + /* If our homedir is /, we probably don't want to use it. */ + /* Default to LOCALSTATEDIR/tor which is probably closer to what we + * want. */ + log_warn(LD_CONFIG, + "Default DataDirectory is \"~/.tor\". This expands to " + "\"%s\", which is probably not what you want. Using " + "\"%s"PATH_SEPARATOR"tor\" instead", fn, LOCALSTATEDIR); + tor_free(fn); + fn = tor_strdup(LOCALSTATEDIR PATH_SEPARATOR "tor"); + } + return fn; + } + return tor_strdup(d); +#endif /* defined(_WIN32) */ +} + +/** Check and normalize the values of options->{Key,Data,Cache}Directory; + * return 0 if it is sane, -1 otherwise. */ +static int +validate_data_directories(or_options_t *options) +{ + tor_free(options->DataDirectory); + options->DataDirectory = get_data_directory(options->DataDirectory_option); + if (!options->DataDirectory) + return -1; + if (strlen(options->DataDirectory) > (512-128)) { + log_warn(LD_CONFIG, "DataDirectory is too long."); + return -1; + } + + tor_free(options->KeyDirectory); + if (options->KeyDirectory_option) { + options->KeyDirectory = get_data_directory(options->KeyDirectory_option); + if (!options->KeyDirectory) + return -1; + } else { + /* Default to the data directory's keys subdir */ + tor_asprintf(&options->KeyDirectory, "%s"PATH_SEPARATOR"keys", + options->DataDirectory); + } + + tor_free(options->CacheDirectory); + if (options->CacheDirectory_option) { + options->CacheDirectory = get_data_directory( + options->CacheDirectory_option); + if (!options->CacheDirectory) + return -1; + } else { + /* Default to the data directory. */ + options->CacheDirectory = tor_strdup(options->DataDirectory); + } + + return 0; +} + +/** This string must remain the same forevermore. It is how we + * recognize that the torrc file doesn't need to be backed up. */ +#define GENERATED_FILE_PREFIX "# This file was generated by Tor; " \ + "if you edit it, comments will not be preserved" +/** This string can change; it tries to give the reader an idea + * that editing this file by hand is not a good plan. */ +#define GENERATED_FILE_COMMENT "# The old torrc file was renamed " \ + "to torrc.orig.1 or similar, and Tor will ignore it" + +/** Save a configuration file for the configuration in options + * into the file fname. If the file already exists, and + * doesn't begin with GENERATED_FILE_PREFIX, rename it. Otherwise + * replace it. Return 0 on success, -1 on failure. */ +static int +write_configuration_file(const char *fname, const or_options_t *options) +{ + char *old_val=NULL, *new_val=NULL, *new_conf=NULL; + int rename_old = 0, r; + + if (!fname) + return -1; + + switch (file_status(fname)) { + /* create backups of old config files, even if they're empty */ + case FN_FILE: + case FN_EMPTY: + old_val = read_file_to_str(fname, 0, NULL); + if (!old_val || strcmpstart(old_val, GENERATED_FILE_PREFIX)) { + rename_old = 1; + } + tor_free(old_val); + break; + case FN_NOENT: + break; + case FN_ERROR: + case FN_DIR: + default: + log_warn(LD_CONFIG, + "Config file \"%s\" is not a file? Failing.", fname); + return -1; + } + + if (!(new_conf = options_dump(options, OPTIONS_DUMP_MINIMAL))) { + log_warn(LD_BUG, "Couldn't get configuration string"); + goto err; + } + + tor_asprintf(&new_val, "%s\n%s\n\n%s", + GENERATED_FILE_PREFIX, GENERATED_FILE_COMMENT, new_conf); + + if (rename_old) { + int i = 1; + char *fn_tmp = NULL; + while (1) { + tor_asprintf(&fn_tmp, "%s.orig.%d", fname, i); + if (file_status(fn_tmp) == FN_NOENT) + break; + tor_free(fn_tmp); + ++i; + } + log_notice(LD_CONFIG, "Renaming old configuration file to \"%s\"", fn_tmp); + if (tor_rename(fname, fn_tmp) < 0) {//XXXX sandbox doesn't allow + log_warn(LD_FS, + "Couldn't rename configuration file \"%s\" to \"%s\": %s", + fname, fn_tmp, strerror(errno)); + tor_free(fn_tmp); + goto err; + } + tor_free(fn_tmp); + } + + if (write_str_to_file(fname, new_val, 0) < 0) + goto err; + + r = 0; + goto done; + err: + r = -1; + done: + tor_free(new_val); + tor_free(new_conf); + return r; +} + +/** + * Save the current configuration file value to disk. Return 0 on + * success, -1 on failure. + **/ +int +options_save_current(void) +{ + /* This fails if we can't write to our configuration file. + * + * If we try falling back to datadirectory or something, we have a better + * chance of saving the configuration, but a better chance of doing + * something the user never expected. */ + return write_configuration_file(get_torrc_fname(0), get_options()); +} + +/** Return the number of cpus configured in options. If we are + * told to auto-detect the number of cpus, return the auto-detected number. */ +int +get_num_cpus(const or_options_t *options) +{ + if (options->NumCPUs == 0) { + int n = compute_num_cpus(); + return (n >= 1) ? n : 1; + } else { + return options->NumCPUs; + } +} + +/** + * Initialize the libevent library. + */ +static void +init_libevent(const or_options_t *options) +{ + tor_libevent_cfg cfg; + + tor_assert(options); + + configure_libevent_logging(); + /* If the kernel complains that some method (say, epoll) doesn't + * exist, we don't care about it, since libevent will cope. + */ + suppress_libevent_log_msg("Function not implemented"); + + memset(&cfg, 0, sizeof(cfg)); + cfg.num_cpus = get_num_cpus(options); + cfg.msec_per_tick = options->TokenBucketRefillInterval; + + tor_libevent_initialize(&cfg); + + suppress_libevent_log_msg(NULL); +} + +/** Return a newly allocated string holding a filename relative to the + * directory in options specified by roottype. + * If sub1 is present, it is the first path component after + * the data directory. If sub2 is also present, it is the second path + * component after the data directory. If suffix is present, it + * is appended to the filename. + * + * Note: Consider using macros in config.h that wrap this function; + * you should probably never need to call it as-is. + */ +MOCK_IMPL(char *, +options_get_dir_fname2_suffix,(const or_options_t *options, + directory_root_t roottype, + const char *sub1, const char *sub2, + const char *suffix)) +{ + tor_assert(options); + + const char *rootdir = NULL; + switch (roottype) { + case DIRROOT_DATADIR: + rootdir = options->DataDirectory; + break; + case DIRROOT_CACHEDIR: + rootdir = options->CacheDirectory; + break; + case DIRROOT_KEYDIR: + rootdir = options->KeyDirectory; + break; + default: + tor_assert_unreached(); + break; + } + tor_assert(rootdir); + + if (!suffix) + suffix = ""; + + char *fname = NULL; + + if (sub1 == NULL) { + tor_asprintf(&fname, "%s%s", rootdir, suffix); + tor_assert(!sub2); /* If sub2 is present, sub1 must be present. */ + } else if (sub2 == NULL) { + tor_asprintf(&fname, "%s"PATH_SEPARATOR"%s%s", rootdir, sub1, suffix); + } else { + tor_asprintf(&fname, "%s"PATH_SEPARATOR"%s"PATH_SEPARATOR"%s%s", + rootdir, sub1, sub2, suffix); + } + + return fname; +} + +/** Check wether the data directory has a private subdirectory + * subdir. If not, try to create it. Return 0 on success, + * -1 otherwise. */ +int +check_or_create_data_subdir(const char *subdir) +{ + char *statsdir = get_datadir_fname(subdir); + int return_val = 0; + + if (check_private_dir(statsdir, CPD_CREATE, get_options()->User) < 0) { + log_warn(LD_HIST, "Unable to create %s/ directory!", subdir); + return_val = -1; + } + tor_free(statsdir); + return return_val; +} + +/** Create a file named fname with contents str in the + * subdirectory subdir of the data directory. descr + * should be a short description of the file's content and will be + * used for the warning message, if it's present and the write process + * fails. Return 0 on success, -1 otherwise.*/ +int +write_to_data_subdir(const char* subdir, const char* fname, + const char* str, const char* descr) +{ + char *filename = get_datadir_fname2(subdir, fname); + int return_val = 0; + + if (write_str_to_file(filename, str, 0) < 0) { + log_warn(LD_HIST, "Unable to write %s to disk!", descr ? descr : fname); + return_val = -1; + } + tor_free(filename); + return return_val; +} + +/** Return a smartlist of ports that must be forwarded by + * tor-fw-helper. The smartlist contains the ports in a string format + * that is understandable by tor-fw-helper. */ +smartlist_t * +get_list_of_ports_to_forward(void) +{ + smartlist_t *ports_to_forward = smartlist_new(); + int port = 0; + + /** XXX TODO tor-fw-helper does not support forwarding ports to + other hosts than the local one. If the user is binding to a + different IP address, tor-fw-helper won't work. */ + port = router_get_advertised_or_port(get_options()); /* Get ORPort */ + if (port) + smartlist_add_asprintf(ports_to_forward, "%d:%d", port, port); + + port = router_get_advertised_dir_port(get_options(), 0); /* Get DirPort */ + if (port) + smartlist_add_asprintf(ports_to_forward, "%d:%d", port, port); + + /* Get ports of transport proxies */ + { + smartlist_t *transport_ports = get_transport_proxy_ports(); + if (transport_ports) { + smartlist_add_all(ports_to_forward, transport_ports); + smartlist_free(transport_ports); + } + } + + if (!smartlist_len(ports_to_forward)) { + smartlist_free(ports_to_forward); + ports_to_forward = NULL; + } + + return ports_to_forward; +} + +/** Helper to implement GETINFO functions about configuration variables (not + * their values). Given a "config/names" question, set *answer to a + * new string describing the supported configuration variables and their + * types. */ +int +getinfo_helper_config(control_connection_t *conn, + const char *question, char **answer, + const char **errmsg) +{ + (void) conn; + (void) errmsg; + if (!strcmp(question, "config/names")) { + smartlist_t *sl = smartlist_new(); + int i; + for (i = 0; option_vars_[i].name; ++i) { + const config_var_t *var = &option_vars_[i]; + const char *type; + /* don't tell controller about triple-underscore options */ + if (!strncmp(option_vars_[i].name, "___", 3)) + continue; + switch (var->type) { + case CONFIG_TYPE_STRING: type = "String"; break; + case CONFIG_TYPE_FILENAME: type = "Filename"; break; + case CONFIG_TYPE_UINT: type = "Integer"; break; + case CONFIG_TYPE_INT: type = "SignedInteger"; break; + case CONFIG_TYPE_PORT: type = "Port"; break; + case CONFIG_TYPE_INTERVAL: type = "TimeInterval"; break; + case CONFIG_TYPE_MSEC_INTERVAL: type = "TimeMsecInterval"; break; + case CONFIG_TYPE_MEMUNIT: type = "DataSize"; break; + case CONFIG_TYPE_DOUBLE: type = "Float"; break; + case CONFIG_TYPE_BOOL: type = "Boolean"; break; + case CONFIG_TYPE_AUTOBOOL: type = "Boolean+Auto"; break; + case CONFIG_TYPE_ISOTIME: type = "Time"; break; + case CONFIG_TYPE_ROUTERSET: type = "RouterList"; break; + case CONFIG_TYPE_CSV: type = "CommaList"; break; + /* This type accepts more inputs than TimeInterval, but it ignores + * everything after the first entry, so we may as well pretend + * it's a TimeInterval. */ + case CONFIG_TYPE_CSV_INTERVAL: type = "TimeInterval"; break; + case CONFIG_TYPE_LINELIST: type = "LineList"; break; + case CONFIG_TYPE_LINELIST_S: type = "Dependent"; break; + case CONFIG_TYPE_LINELIST_V: type = "Virtual"; break; + default: + case CONFIG_TYPE_OBSOLETE: + type = NULL; break; + } + if (!type) + continue; + smartlist_add_asprintf(sl, "%s %s\n",var->name,type); + } + *answer = smartlist_join_strings(sl, "", 0, NULL); + SMARTLIST_FOREACH(sl, char *, c, tor_free(c)); + smartlist_free(sl); + } else if (!strcmp(question, "config/defaults")) { + smartlist_t *sl = smartlist_new(); + int dirauth_lines_seen = 0, fallback_lines_seen = 0; + for (int i = 0; option_vars_[i].name; ++i) { + const config_var_t *var = &option_vars_[i]; + if (var->initvalue != NULL) { + if (strcmp(option_vars_[i].name, "DirAuthority") == 0) { + /* + * Count dirauth lines we have a default for; we'll use the + * count later to decide whether to add the defaults manually + */ + ++dirauth_lines_seen; + } + if (strcmp(option_vars_[i].name, "FallbackDir") == 0) { + /* + * Similarly count fallback lines, so that we can decided later + * to add the defaults manually. + */ + ++fallback_lines_seen; + } + char *val = esc_for_log(var->initvalue); + smartlist_add_asprintf(sl, "%s %s\n",var->name,val); + tor_free(val); + } + } + + if (dirauth_lines_seen == 0) { + /* + * We didn't see any directory authorities with default values, + * so add the list of default authorities manually. + */ + + /* + * default_authorities is defined earlier in this file and + * is a const char ** NULL-terminated array of dirauth config + * lines. + */ + for (const char **i = default_authorities; *i != NULL; ++i) { + char *val = esc_for_log(*i); + smartlist_add_asprintf(sl, "DirAuthority %s\n", val); + tor_free(val); + } + } + + if (fallback_lines_seen == 0 && + get_options()->UseDefaultFallbackDirs == 1) { + /* + * We didn't see any explicitly configured fallback mirrors, + * so add the defaults to the list manually. + * + * default_fallbacks is included earlier in this file and + * is a const char ** NULL-terminated array of fallback config lines. + */ + const char **i; + + for (i = default_fallbacks; *i != NULL; ++i) { + char *val = esc_for_log(*i); + smartlist_add_asprintf(sl, "FallbackDir %s\n", val); + tor_free(val); + } + } + + *answer = smartlist_join_strings(sl, "", 0, NULL); + SMARTLIST_FOREACH(sl, char *, c, tor_free(c)); + smartlist_free(sl); + } + return 0; +} + +/* Check whether an address has already been set against the options + * depending on address family and destination type. Any exsting + * value will lead to a fail, even if it is the same value. If not + * set and not only validating, copy it into this location too. + * Returns 0 on success or -1 if this address is already set. + */ +static int +verify_and_store_outbound_address(sa_family_t family, tor_addr_t *addr, + outbound_addr_t type, or_options_t *options, int validate_only) +{ + if (type>=OUTBOUND_ADDR_MAX || (family!=AF_INET && family!=AF_INET6)) { + return -1; + } + int fam_index=0; + if (family==AF_INET6) { + fam_index=1; + } + tor_addr_t *dest=&options->OutboundBindAddresses[type][fam_index]; + if (!tor_addr_is_null(dest)) { + return -1; + } + if (!validate_only) { + tor_addr_copy(dest, addr); + } + return 0; +} + +/* Parse a list of address lines for a specific destination type. + * Will store them into the options if not validate_only. If a + * problem occurs, a suitable error message is store in msg. + * Returns 0 on success or -1 if any address is already set. + */ +static int +parse_outbound_address_lines(const config_line_t *lines, outbound_addr_t type, + or_options_t *options, int validate_only, char **msg) +{ + tor_addr_t addr; + sa_family_t family; + while (lines) { + family = tor_addr_parse(&addr, lines->value); + if (verify_and_store_outbound_address(family, &addr, type, + options, validate_only)) { + if (msg) + tor_asprintf(msg, "Multiple%s%s outbound bind addresses " + "configured: %s", + family==AF_INET?" IPv4":(family==AF_INET6?" IPv6":""), + type==OUTBOUND_ADDR_OR?" OR": + (type==OUTBOUND_ADDR_EXIT?" exit":""), lines->value); + return -1; + } + lines = lines->next; + } + return 0; +} + +/** Parse outbound bind address option lines. If validate_only + * is not 0 update OutboundBindAddresses in options. + * Only one address can be set for any of these values. + * On failure, set msg (if provided) to a newly allocated string + * containing a description of the problem and return -1. + */ +static int +parse_outbound_addresses(or_options_t *options, int validate_only, char **msg) +{ + if (!validate_only) { + memset(&options->OutboundBindAddresses, 0, + sizeof(options->OutboundBindAddresses)); + } + + if (parse_outbound_address_lines(options->OutboundBindAddress, + OUTBOUND_ADDR_EXIT_AND_OR, options, + validate_only, msg) < 0) { + goto err; + } + + if (parse_outbound_address_lines(options->OutboundBindAddressOR, + OUTBOUND_ADDR_OR, options, validate_only, + msg) < 0) { + goto err; + } + + if (parse_outbound_address_lines(options->OutboundBindAddressExit, + OUTBOUND_ADDR_EXIT, options, validate_only, + msg) < 0) { + goto err; + } + + return 0; + err: + return -1; +} + +/** Load one of the geoip files, family determining which + * one. default_fname is used if on Windows and + * fname equals "". */ +static void +config_load_geoip_file_(sa_family_t family, + const char *fname, + const char *default_fname) +{ +#ifdef _WIN32 + char *free_fname = NULL; /* Used to hold any temporary-allocated value */ + /* XXXX Don't use this "" junk; make our filename options + * understand prefixes somehow. -NM */ + if (!strcmp(fname, "")) { + const char *conf_root = get_windows_conf_root(); + tor_asprintf(&free_fname, "%s\\%s", conf_root, default_fname); + fname = free_fname; + } + geoip_load_file(family, fname); + tor_free(free_fname); +#else /* !(defined(_WIN32)) */ + (void)default_fname; + geoip_load_file(family, fname); +#endif /* defined(_WIN32) */ +} + +/** Load geoip files for IPv4 and IPv6 if options and + * old_options indicate we should. */ +static void +config_maybe_load_geoip_files_(const or_options_t *options, + const or_options_t *old_options) +{ + /* XXXX Reload GeoIPFile on SIGHUP. -NM */ + + if (options->GeoIPFile && + ((!old_options || !opt_streq(old_options->GeoIPFile, + options->GeoIPFile)) + || !geoip_is_loaded(AF_INET))) + config_load_geoip_file_(AF_INET, options->GeoIPFile, "geoip"); + if (options->GeoIPv6File && + ((!old_options || !opt_streq(old_options->GeoIPv6File, + options->GeoIPv6File)) + || !geoip_is_loaded(AF_INET6))) + config_load_geoip_file_(AF_INET6, options->GeoIPv6File, "geoip6"); +} + +/** Initialize cookie authentication (used so far by the ControlPort + * and Extended ORPort). + * + * Allocate memory and create a cookie (of length cookie_len) + * in cookie_out. + * Then write it down to fname and prepend it with header. + * + * If group_readable is set, set fname to be readable + * by the default GID. + * + * If the whole procedure was successful, set + * cookie_is_set_out to True. */ +int +init_cookie_authentication(const char *fname, const char *header, + int cookie_len, int group_readable, + uint8_t **cookie_out, int *cookie_is_set_out) +{ + char cookie_file_str_len = strlen(header) + cookie_len; + char *cookie_file_str = tor_malloc(cookie_file_str_len); + int retval = -1; + + /* We don't want to generate a new cookie every time we call + * options_act(). One should be enough. */ + if (*cookie_is_set_out) { + retval = 0; /* we are all set */ + goto done; + } + + /* If we've already set the cookie, free it before re-setting + it. This can happen if we previously generated a cookie, but + couldn't write it to a disk. */ + if (*cookie_out) + tor_free(*cookie_out); + + /* Generate the cookie */ + *cookie_out = tor_malloc(cookie_len); + crypto_rand((char *)*cookie_out, cookie_len); + + /* Create the string that should be written on the file. */ + memcpy(cookie_file_str, header, strlen(header)); + memcpy(cookie_file_str+strlen(header), *cookie_out, cookie_len); + if (write_bytes_to_file(fname, cookie_file_str, cookie_file_str_len, 1)) { + log_warn(LD_FS,"Error writing auth cookie to %s.", escaped(fname)); + goto done; + } + +#ifndef _WIN32 + if (group_readable) { + if (chmod(fname, 0640)) { + log_warn(LD_FS,"Unable to make %s group-readable.", escaped(fname)); + } + } +#else /* !(!defined(_WIN32)) */ + (void) group_readable; +#endif /* !defined(_WIN32) */ + + /* Success! */ + log_info(LD_GENERAL, "Generated auth cookie file in '%s'.", escaped(fname)); + *cookie_is_set_out = 1; + retval = 0; + + done: + memwipe(cookie_file_str, 0, cookie_file_str_len); + tor_free(cookie_file_str); + return retval; +} + +/** + * Return true if any option is set in options to make us behave + * as a client. + */ +int +options_any_client_port_set(const or_options_t *options) +{ + return (options->SocksPort_set || + options->TransPort_set || + options->NATDPort_set || + options->DNSPort_set || + options->HTTPTunnelPort_set); +} diff --git a/src/app/config/config.h b/src/app/config/config.h new file mode 100644 index 0000000000..6d2feb5f43 --- /dev/null +++ b/src/app/config/config.h @@ -0,0 +1,290 @@ +/* Copyright (c) 2001 Matej Pfajfar. + * Copyright (c) 2001-2004, Roger Dingledine. + * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson. + * Copyright (c) 2007-2018, The Tor Project, Inc. */ +/* See LICENSE for licensing information */ + +/** + * \file config.h + * \brief Header file for config.c. + **/ + +#ifndef TOR_CONFIG_H +#define TOR_CONFIG_H + +#include "or/or_options_st.h" +#include "lib/testsupport/testsupport.h" + +#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(DARWIN) +#define KERNEL_MAY_SUPPORT_IPFW +#endif + +/** Lowest allowable value for HeartbeatPeriod; if this is too low, we might + * expose more information than we're comfortable with. */ +#define MIN_HEARTBEAT_PERIOD (30*60) + +/** Maximum default value for MaxMemInQueues, in bytes. */ +#if SIZEOF_VOID_P >= 8 +#define MAX_DEFAULT_MEMORY_QUEUE_SIZE (UINT64_C(8) << 30) +#else +#define MAX_DEFAULT_MEMORY_QUEUE_SIZE (UINT64_C(2) << 30) +#endif + +MOCK_DECL(const char*, get_dirportfrontpage, (void)); +MOCK_DECL(const or_options_t *, get_options, (void)); +MOCK_DECL(or_options_t *, get_options_mutable, (void)); +int set_options(or_options_t *new_val, char **msg); +void config_free_all(void); +const char *safe_str_client(const char *address); +const char *safe_str(const char *address); +const char *escaped_safe_str_client(const char *address); +const char *escaped_safe_str(const char *address); +void init_protocol_warning_severity_level(void); +int get_protocol_warning_severity_level(void); +const char *get_version(void); +const char *get_short_version(void); + +/** An error from options_trial_assign() or options_init_from_string(). */ +typedef enum setopt_err_t { + SETOPT_OK = 0, + SETOPT_ERR_MISC = -1, + SETOPT_ERR_PARSE = -2, + SETOPT_ERR_TRANSITION = -3, + SETOPT_ERR_SETTING = -4, +} setopt_err_t; +setopt_err_t options_trial_assign(struct config_line_t *list, unsigned flags, + char **msg); + +uint32_t get_last_resolved_addr(void); +void reset_last_resolved_addr(void); +int resolve_my_address(int warn_severity, const or_options_t *options, + uint32_t *addr_out, + const char **method_out, char **hostname_out); +MOCK_DECL(int, is_local_addr, (const tor_addr_t *addr)); +void options_init(or_options_t *options); + +#define OPTIONS_DUMP_MINIMAL 1 +#define OPTIONS_DUMP_DEFAULTS 2 +#define OPTIONS_DUMP_ALL 3 +char *options_dump(const or_options_t *options, int how_to_dump); +int options_init_from_torrc(int argc, char **argv); +setopt_err_t options_init_from_string(const char *cf_defaults, const char *cf, + int command, const char *command_arg, char **msg); +int option_is_recognized(const char *key); +const char *option_get_canonical_name(const char *key); +struct config_line_t *option_get_assignment(const or_options_t *options, + const char *key); +int options_save_current(void); +const char *get_torrc_fname(int defaults_fname); +typedef enum { + DIRROOT_DATADIR, + DIRROOT_CACHEDIR, + DIRROOT_KEYDIR +} directory_root_t; + +MOCK_DECL(char *, + options_get_dir_fname2_suffix, + (const or_options_t *options, + directory_root_t roottype, + const char *sub1, const char *sub2, + const char *suffix)); + +/* These macros wrap options_get_dir_fname2_suffix to provide a more + * convenient API for finding filenames that Tor uses inside its storage + * They are named according to a pattern: + * (options_)?get_(cache|key|data)dir_fname(2)?(_suffix)? + * + * Macros that begin with options_ take an options argument; the others + * work with respect to the global options. + * + * Each macro works relative to the data directory, the key directory, + * or the cache directory, as determined by which one is mentioned. + * + * Macro variants with "2" in their name take two path components; others + * take one. + * + * Macro variants with "_suffix" at the end take an additional suffix + * that gets appended to the end of the file + */ +#define options_get_datadir_fname2_suffix(options, sub1, sub2, suffix) \ + options_get_dir_fname2_suffix((options), DIRROOT_DATADIR, \ + (sub1), (sub2), (suffix)) +#define options_get_cachedir_fname2_suffix(options, sub1, sub2, suffix) \ + options_get_dir_fname2_suffix((options), DIRROOT_CACHEDIR, \ + (sub1), (sub2), (suffix)) +#define options_get_keydir_fname2_suffix(options, sub1, sub2, suffix) \ + options_get_dir_fname2_suffix((options), DIRROOT_KEYDIR, \ + (sub1), (sub2), (suffix)) + +#define options_get_datadir_fname(opts,sub1) \ + options_get_datadir_fname2_suffix((opts),(sub1), NULL, NULL) +#define options_get_datadir_fname2(opts,sub1,sub2) \ + options_get_datadir_fname2_suffix((opts),(sub1), (sub2), NULL) + +#define get_datadir_fname2_suffix(sub1, sub2, suffix) \ + options_get_datadir_fname2_suffix(get_options(), (sub1), (sub2), (suffix)) +#define get_datadir_fname(sub1) \ + get_datadir_fname2_suffix((sub1), NULL, NULL) +#define get_datadir_fname2(sub1,sub2) \ + get_datadir_fname2_suffix((sub1), (sub2), NULL) +#define get_datadir_fname_suffix(sub1, suffix) \ + get_datadir_fname2_suffix((sub1), NULL, (suffix)) + +/** DOCDOC */ +#define options_get_keydir_fname(options, sub1) \ + options_get_keydir_fname2_suffix((options), (sub1), NULL, NULL) +#define get_keydir_fname_suffix(sub1, suffix) \ + options_get_keydir_fname2_suffix(get_options(), (sub1), NULL, suffix) +#define get_keydir_fname(sub1) \ + options_get_keydir_fname2_suffix(get_options(), (sub1), NULL, NULL) + +#define get_cachedir_fname(sub1) \ + options_get_cachedir_fname2_suffix(get_options(), (sub1), NULL, NULL) +#define get_cachedir_fname_suffix(sub1, suffix) \ + options_get_cachedir_fname2_suffix(get_options(), (sub1), NULL, (suffix)) + +int using_default_dir_authorities(const or_options_t *options); + +int create_keys_directory(const or_options_t *options); + +int check_or_create_data_subdir(const char *subdir); +int write_to_data_subdir(const char* subdir, const char* fname, + const char* str, const char* descr); + +int get_num_cpus(const or_options_t *options); + +MOCK_DECL(const smartlist_t *,get_configured_ports,(void)); +int get_first_advertised_port_by_type_af(int listener_type, + int address_family); +#define get_primary_or_port() \ + (get_first_advertised_port_by_type_af(CONN_TYPE_OR_LISTENER, AF_INET)) +#define get_primary_dir_port() \ + (get_first_advertised_port_by_type_af(CONN_TYPE_DIR_LISTENER, AF_INET)) +const tor_addr_t *get_first_advertised_addr_by_type_af(int listener_type, + int address_family); +int port_exists_by_type_addr_port(int listener_type, const tor_addr_t *addr, + int port, int check_wildcard); +int port_exists_by_type_addr32h_port(int listener_type, uint32_t addr_ipv4h, + int port, int check_wildcard); + +char *get_first_listener_addrport_string(int listener_type); + +int options_need_geoip_info(const or_options_t *options, + const char **reason_out); + +smartlist_t *get_list_of_ports_to_forward(void); + +int getinfo_helper_config(control_connection_t *conn, + const char *question, char **answer, + const char **errmsg); + +uint32_t get_effective_bwrate(const or_options_t *options); +uint32_t get_effective_bwburst(const or_options_t *options); + +char *get_transport_bindaddr_from_config(const char *transport); + +int init_cookie_authentication(const char *fname, const char *header, + int cookie_len, int group_readable, + uint8_t **cookie_out, int *cookie_is_set_out); + +or_options_t *options_new(void); + +int config_parse_commandline(int argc, char **argv, int ignore_errors, + struct config_line_t **result, + struct config_line_t **cmdline_result); + +void config_register_addressmaps(const or_options_t *options); +/* XXXX move to connection_edge.h */ +int addressmap_register_auto(const char *from, const char *to, + time_t expires, + addressmap_entry_source_t addrmap_source, + const char **msg); + +int port_cfg_line_extract_addrport(const char *line, + char **addrport_out, + int *is_unix_out, + const char **rest_out); + +/** Represents the information stored in a torrc Bridge line. */ +typedef struct bridge_line_t { + tor_addr_t addr; /* The IP address of the bridge. */ + uint16_t port; /* The TCP port of the bridge. */ + char *transport_name; /* The name of the pluggable transport that + should be used to connect to the bridge. */ + char digest[DIGEST_LEN]; /* The bridge's identity key digest. */ + smartlist_t *socks_args; /* SOCKS arguments for the pluggable + transport proxy. */ +} bridge_line_t; + +void bridge_line_free_(bridge_line_t *bridge_line); +#define bridge_line_free(line) \ + FREE_AND_NULL(bridge_line_t, bridge_line_free_, (line)) +bridge_line_t *parse_bridge_line(const char *line); +smartlist_t *get_options_from_transport_options_line(const char *line, + const char *transport); +smartlist_t *get_options_for_server_transport(const char *transport); + +/* Port helper functions. */ +int options_any_client_port_set(const or_options_t *options); + +#ifdef CONFIG_PRIVATE + +#define CL_PORT_NO_STREAM_OPTIONS (1u<<0) +#define CL_PORT_WARN_NONLOCAL (1u<<1) +/* Was CL_PORT_ALLOW_EXTRA_LISTENADDR (1u<<2) */ +#define CL_PORT_SERVER_OPTIONS (1u<<3) +#define CL_PORT_FORBID_NONLOCAL (1u<<4) +#define CL_PORT_TAKES_HOSTNAMES (1u<<5) +#define CL_PORT_IS_UNIXSOCKET (1u<<6) +#define CL_PORT_DFLT_GROUP_WRITABLE (1u<<7) + +STATIC int options_act(const or_options_t *old_options); +#ifdef TOR_UNIT_TESTS +extern struct config_format_t options_format; +#endif + +STATIC port_cfg_t *port_cfg_new(size_t namelen); +#define port_cfg_free(port) \ + FREE_AND_NULL(port_cfg_t, port_cfg_free_, (port)) +STATIC void port_cfg_free_(port_cfg_t *port); +#define or_options_free(opt) \ + FREE_AND_NULL(or_options_t, or_options_free_, (opt)) +STATIC void or_options_free_(or_options_t *options); +STATIC int options_validate_single_onion(or_options_t *options, + char **msg); +STATIC int options_validate(or_options_t *old_options, + or_options_t *options, + or_options_t *default_options, + int from_setconf, char **msg); +STATIC int parse_transport_line(const or_options_t *options, + const char *line, int validate_only, + int server); +STATIC int consider_adding_dir_servers(const or_options_t *options, + const or_options_t *old_options); +STATIC void add_default_trusted_dir_authorities(dirinfo_type_t type); +MOCK_DECL(STATIC void, add_default_fallback_dir_servers, (void)); +STATIC int parse_dir_authority_line(const char *line, + dirinfo_type_t required_type, + int validate_only); +STATIC int parse_dir_fallback_line(const char *line, int validate_only); +STATIC int have_enough_mem_for_dircache(const or_options_t *options, + size_t total_mem, char **msg); +STATIC int parse_port_config(smartlist_t *out, + const struct config_line_t *ports, + const char *portname, + int listener_type, + const char *defaultaddr, + int defaultport, + const unsigned flags); + +STATIC int check_bridge_distribution_setting(const char *bd); + +STATIC uint64_t compute_real_max_mem_in_queues(const uint64_t val, + int log_guess); +STATIC int open_and_add_file_log(const log_severity_list_t *severity, + const char *fname, + int truncate_log); + +#endif /* defined(CONFIG_PRIVATE) */ + +#endif /* !defined(TOR_CONFIG_H) */ diff --git a/src/app/config/confparse.c b/src/app/config/confparse.c new file mode 100644 index 0000000000..87405c6e7d --- /dev/null +++ b/src/app/config/confparse.c @@ -0,0 +1,1190 @@ +/* Copyright (c) 2001 Matej Pfajfar. + * Copyright (c) 2001-2004, Roger Dingledine. + * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson. + * Copyright (c) 2007-2018, The Tor Project, Inc. */ +/* See LICENSE for licensing information */ + +/** + * \file confparse.c + * + * \brief Back-end for parsing and generating key-value files, used to + * implement the torrc file format and the state file. + * + * This module is used by config.c to parse and encode torrc + * configuration files, and by statefile.c to parse and encode the + * $DATADIR/state file. + * + * To use this module, its callers provide an instance of + * config_format_t to describe the mappings from a set of configuration + * options to a number of fields in a C structure. With this mapping, + * the functions here can convert back and forth between the C structure + * specified, and a linked list of key-value pairs. + */ + +#include "or/or.h" +#include "or/confparse.h" +#include "or/routerset.h" + +#include "lib/container/bitarray.h" +#include "lib/encoding/confline.h" + +static uint64_t config_parse_memunit(const char *s, int *ok); +static int config_parse_msec_interval(const char *s, int *ok); +static int config_parse_interval(const char *s, int *ok); +static void config_reset(const config_format_t *fmt, void *options, + const config_var_t *var, int use_defaults); + +/** Allocate an empty configuration object of a given format type. */ +void * +config_new(const config_format_t *fmt) +{ + void *opts = tor_malloc_zero(fmt->size); + *(uint32_t*)STRUCT_VAR_P(opts, fmt->magic_offset) = fmt->magic; + CONFIG_CHECK(fmt, opts); + return opts; +} + +/* + * Functions to parse config options + */ + +/** If option is an official abbreviation for a longer option, + * return the longer option. Otherwise return option. + * If command_line is set, apply all abbreviations. Otherwise, only + * apply abbreviations that work for the config file and the command line. + * If warn_obsolete is set, warn about deprecated names. */ +const char * +config_expand_abbrev(const config_format_t *fmt, const char *option, + int command_line, int warn_obsolete) +{ + int i; + if (! fmt->abbrevs) + return option; + for (i=0; fmt->abbrevs[i].abbreviated; ++i) { + /* Abbreviations are case insensitive. */ + if (!strcasecmp(option,fmt->abbrevs[i].abbreviated) && + (command_line || !fmt->abbrevs[i].commandline_only)) { + if (warn_obsolete && fmt->abbrevs[i].warn) { + log_warn(LD_CONFIG, + "The configuration option '%s' is deprecated; " + "use '%s' instead.", + fmt->abbrevs[i].abbreviated, + fmt->abbrevs[i].full); + } + /* Keep going through the list in case we want to rewrite it more. + * (We could imagine recursing here, but I don't want to get the + * user into an infinite loop if we craft our list wrong.) */ + option = fmt->abbrevs[i].full; + } + } + return option; +} + +/** If key is a deprecated configuration option, return the message + * explaining why it is deprecated (which may be an empty string). Return NULL + * if it is not deprecated. The key field must be fully expanded. */ +const char * +config_find_deprecation(const config_format_t *fmt, const char *key) +{ + if (BUG(fmt == NULL) || BUG(key == NULL)) + return NULL; + if (fmt->deprecations == NULL) + return NULL; + + const config_deprecation_t *d; + for (d = fmt->deprecations; d->name; ++d) { + if (!strcasecmp(d->name, key)) { + return d->why_deprecated ? d->why_deprecated : ""; + } + } + return NULL; +} + +/** As config_find_option, but return a non-const pointer. */ +config_var_t * +config_find_option_mutable(config_format_t *fmt, const char *key) +{ + int i; + size_t keylen = strlen(key); + if (!keylen) + return NULL; /* if they say "--" on the command line, it's not an option */ + /* First, check for an exact (case-insensitive) match */ + for (i=0; fmt->vars[i].name; ++i) { + if (!strcasecmp(key, fmt->vars[i].name)) { + return &fmt->vars[i]; + } + } + /* If none, check for an abbreviated match */ + for (i=0; fmt->vars[i].name; ++i) { + if (!strncasecmp(key, fmt->vars[i].name, keylen)) { + log_warn(LD_CONFIG, "The abbreviation '%s' is deprecated. " + "Please use '%s' instead", + key, fmt->vars[i].name); + return &fmt->vars[i]; + } + } + /* Okay, unrecognized option */ + return NULL; +} + +/** If key is a configuration option, return the corresponding const + * config_var_t. Otherwise, if key is a non-standard abbreviation, + * warn, and return the corresponding const config_var_t. Otherwise return + * NULL. + */ +const config_var_t * +config_find_option(const config_format_t *fmt, const char *key) +{ + return config_find_option_mutable((config_format_t*)fmt, key); +} + +/** Return the number of option entries in fmt. */ +static int +config_count_options(const config_format_t *fmt) +{ + int i; + for (i=0; fmt->vars[i].name; ++i) + ; + return i; +} + +/* + * Functions to assign config options. + */ + +/** c-\>key is known to be a real key. Update options + * with c-\>value and return 0, or return -1 if bad value. + * + * Called from config_assign_line() and option_reset(). + */ +static int +config_assign_value(const config_format_t *fmt, void *options, + config_line_t *c, char **msg) +{ + int i, ok; + const config_var_t *var; + void *lvalue; + + CONFIG_CHECK(fmt, options); + + var = config_find_option(fmt, c->key); + tor_assert(var); + + lvalue = STRUCT_VAR_P(options, var->var_offset); + + switch (var->type) { + + case CONFIG_TYPE_PORT: + if (!strcasecmp(c->value, "auto")) { + *(int *)lvalue = CFG_AUTO_PORT; + break; + } + /* fall through */ + case CONFIG_TYPE_INT: + case CONFIG_TYPE_UINT: + i = (int)tor_parse_long(c->value, 10, + var->type==CONFIG_TYPE_INT ? INT_MIN : 0, + var->type==CONFIG_TYPE_PORT ? 65535 : INT_MAX, + &ok, NULL); + if (!ok) { + tor_asprintf(msg, + "Int keyword '%s %s' is malformed or out of bounds.", + c->key, c->value); + return -1; + } + *(int *)lvalue = i; + break; + + case CONFIG_TYPE_CSV_INTERVAL: { + /* We used to have entire smartlists here. But now that all of our + * download schedules use exponential backoff, only the first part + * matters. */ + const char *comma = strchr(c->value, ','); + const char *val = c->value; + char *tmp = NULL; + if (comma) { + tmp = tor_strndup(c->value, comma - c->value); + val = tmp; + } + + i = config_parse_interval(val, &ok); + if (!ok) { + tor_asprintf(msg, + "Interval '%s %s' is malformed or out of bounds.", + c->key, c->value); + return -1; + } + *(int *)lvalue = i; + tor_free(tmp); + break; + } + + case CONFIG_TYPE_INTERVAL: { + i = config_parse_interval(c->value, &ok); + if (!ok) { + tor_asprintf(msg, + "Interval '%s %s' is malformed or out of bounds.", + c->key, c->value); + return -1; + } + *(int *)lvalue = i; + break; + } + + case CONFIG_TYPE_MSEC_INTERVAL: { + i = config_parse_msec_interval(c->value, &ok); + if (!ok) { + tor_asprintf(msg, + "Msec interval '%s %s' is malformed or out of bounds.", + c->key, c->value); + return -1; + } + *(int *)lvalue = i; + break; + } + + case CONFIG_TYPE_MEMUNIT: { + uint64_t u64 = config_parse_memunit(c->value, &ok); + if (!ok) { + tor_asprintf(msg, + "Value '%s %s' is malformed or out of bounds.", + c->key, c->value); + return -1; + } + *(uint64_t *)lvalue = u64; + break; + } + + case CONFIG_TYPE_BOOL: + i = (int)tor_parse_long(c->value, 10, 0, 1, &ok, NULL); + if (!ok) { + tor_asprintf(msg, + "Boolean '%s %s' expects 0 or 1.", + c->key, c->value); + return -1; + } + *(int *)lvalue = i; + break; + + case CONFIG_TYPE_AUTOBOOL: + if (!strcmp(c->value, "auto")) + *(int *)lvalue = -1; + else if (!strcmp(c->value, "0")) + *(int *)lvalue = 0; + else if (!strcmp(c->value, "1")) + *(int *)lvalue = 1; + else { + tor_asprintf(msg, "Boolean '%s %s' expects 0, 1, or 'auto'.", + c->key, c->value); + return -1; + } + break; + + case CONFIG_TYPE_STRING: + case CONFIG_TYPE_FILENAME: + tor_free(*(char **)lvalue); + *(char **)lvalue = tor_strdup(c->value); + break; + + case CONFIG_TYPE_DOUBLE: + *(double *)lvalue = atof(c->value); + break; + + case CONFIG_TYPE_ISOTIME: + if (parse_iso_time(c->value, (time_t *)lvalue)) { + tor_asprintf(msg, + "Invalid time '%s' for keyword '%s'", c->value, c->key); + return -1; + } + break; + + case CONFIG_TYPE_ROUTERSET: + if (*(routerset_t**)lvalue) { + routerset_free(*(routerset_t**)lvalue); + } + *(routerset_t**)lvalue = routerset_new(); + if (routerset_parse(*(routerset_t**)lvalue, c->value, c->key)<0) { + tor_asprintf(msg, "Invalid exit list '%s' for option '%s'", + c->value, c->key); + return -1; + } + break; + + case CONFIG_TYPE_CSV: + if (*(smartlist_t**)lvalue) { + SMARTLIST_FOREACH(*(smartlist_t**)lvalue, char *, cp, tor_free(cp)); + smartlist_clear(*(smartlist_t**)lvalue); + } else { + *(smartlist_t**)lvalue = smartlist_new(); + } + + smartlist_split_string(*(smartlist_t**)lvalue, c->value, ",", + SPLIT_SKIP_SPACE|SPLIT_IGNORE_BLANK, 0); + break; + + case CONFIG_TYPE_LINELIST: + case CONFIG_TYPE_LINELIST_S: + { + config_line_t *lastval = *(config_line_t**)lvalue; + if (lastval && lastval->fragile) { + if (c->command != CONFIG_LINE_APPEND) { + config_free_lines(lastval); + *(config_line_t**)lvalue = NULL; + } else { + lastval->fragile = 0; + } + } + + config_line_append((config_line_t**)lvalue, c->key, c->value); + } + break; + case CONFIG_TYPE_OBSOLETE: + log_warn(LD_CONFIG, "Skipping obsolete configuration option '%s'", c->key); + break; + case CONFIG_TYPE_LINELIST_V: + tor_asprintf(msg, + "You may not provide a value for virtual option '%s'", c->key); + return -1; + default: + tor_assert(0); + break; + } + return 0; +} + +/** Mark every linelist in options "fragile", so that fresh assignments + * to it will replace old ones. */ +static void +config_mark_lists_fragile(const config_format_t *fmt, void *options) +{ + int i; + tor_assert(fmt); + tor_assert(options); + + for (i = 0; fmt->vars[i].name; ++i) { + const config_var_t *var = &fmt->vars[i]; + config_line_t *list; + if (var->type != CONFIG_TYPE_LINELIST && + var->type != CONFIG_TYPE_LINELIST_V) + continue; + + list = *(config_line_t **)STRUCT_VAR_P(options, var->var_offset); + if (list) + list->fragile = 1; + } +} + +void +warn_deprecated_option(const char *what, const char *why) +{ + const char *space = (why && strlen(why)) ? " " : ""; + log_warn(LD_CONFIG, "The %s option is deprecated, and will most likely " + "be removed in a future version of Tor.%s%s (If you think this is " + "a mistake, please let us know!)", + what, space, why); +} + +/** If c is a syntactically valid configuration line, update + * options with its value and return 0. Otherwise return -1 for bad + * key, -2 for bad value. + * + * If clear_first is set, clear the value first. Then if + * use_defaults is set, set the value to the default. + * + * Called from config_assign(). + */ +static int +config_assign_line(const config_format_t *fmt, void *options, + config_line_t *c, unsigned flags, + bitarray_t *options_seen, char **msg) +{ + const unsigned use_defaults = flags & CAL_USE_DEFAULTS; + const unsigned clear_first = flags & CAL_CLEAR_FIRST; + const unsigned warn_deprecations = flags & CAL_WARN_DEPRECATIONS; + const config_var_t *var; + + CONFIG_CHECK(fmt, options); + + var = config_find_option(fmt, c->key); + if (!var) { + if (fmt->extra) { + void *lvalue = STRUCT_VAR_P(options, fmt->extra->var_offset); + log_info(LD_CONFIG, + "Found unrecognized option '%s'; saving it.", c->key); + config_line_append((config_line_t**)lvalue, c->key, c->value); + return 0; + } else { + tor_asprintf(msg, + "Unknown option '%s'. Failing.", c->key); + return -1; + } + } + + /* Put keyword into canonical case. */ + if (strcmp(var->name, c->key)) { + tor_free(c->key); + c->key = tor_strdup(var->name); + } + + const char *deprecation_msg; + if (warn_deprecations && + (deprecation_msg = config_find_deprecation(fmt, var->name))) { + warn_deprecated_option(var->name, deprecation_msg); + } + + if (!strlen(c->value)) { + /* reset or clear it, then return */ + if (!clear_first) { + if ((var->type == CONFIG_TYPE_LINELIST || + var->type == CONFIG_TYPE_LINELIST_S) && + c->command != CONFIG_LINE_CLEAR) { + /* We got an empty linelist from the torrc or command line. + As a special case, call this an error. Warn and ignore. */ + log_warn(LD_CONFIG, + "Linelist option '%s' has no value. Skipping.", c->key); + } else { /* not already cleared */ + config_reset(fmt, options, var, use_defaults); + } + } + return 0; + } else if (c->command == CONFIG_LINE_CLEAR && !clear_first) { + config_reset(fmt, options, var, use_defaults); + } + + if (options_seen && (var->type != CONFIG_TYPE_LINELIST && + var->type != CONFIG_TYPE_LINELIST_S)) { + /* We're tracking which options we've seen, and this option is not + * supposed to occur more than once. */ + int var_index = (int)(var - fmt->vars); + if (bitarray_is_set(options_seen, var_index)) { + log_warn(LD_CONFIG, "Option '%s' used more than once; all but the last " + "value will be ignored.", var->name); + } + bitarray_set(options_seen, var_index); + } + + if (config_assign_value(fmt, options, c, msg) < 0) + return -2; + return 0; +} + +/** Restore the option named key in options to its default value. + * Called from config_assign(). */ +static void +config_reset_line(const config_format_t *fmt, void *options, + const char *key, int use_defaults) +{ + const config_var_t *var; + + CONFIG_CHECK(fmt, options); + + var = config_find_option(fmt, key); + if (!var) + return; /* give error on next pass. */ + + config_reset(fmt, options, var, use_defaults); +} + +/** Return true iff value needs to be quoted and escaped to be used in + * a configuration file. */ +static int +config_value_needs_escape(const char *value) +{ + if (*value == '\"') + return 1; + while (*value) { + switch (*value) + { + case '\r': + case '\n': + case '#': + /* Note: quotes and backspaces need special handling when we are using + * quotes, not otherwise, so they don't trigger escaping on their + * own. */ + return 1; + default: + if (!TOR_ISPRINT(*value)) + return 1; + } + ++value; + } + return 0; +} + +/** Return newly allocated line or lines corresponding to key in the + * configuration options. If escape_val is true and a + * value needs to be quoted before it's put in a config file, quote and + * escape that value. Return NULL if no such key exists. */ +config_line_t * +config_get_assigned_option(const config_format_t *fmt, const void *options, + const char *key, int escape_val) +{ + const config_var_t *var; + const void *value; + config_line_t *result; + tor_assert(options && key); + + CONFIG_CHECK(fmt, options); + + var = config_find_option(fmt, key); + if (!var) { + log_warn(LD_CONFIG, "Unknown option '%s'. Failing.", key); + return NULL; + } + value = STRUCT_VAR_P(options, var->var_offset); + + result = tor_malloc_zero(sizeof(config_line_t)); + result->key = tor_strdup(var->name); + switch (var->type) + { + case CONFIG_TYPE_STRING: + case CONFIG_TYPE_FILENAME: + if (*(char**)value) { + result->value = tor_strdup(*(char**)value); + } else { + tor_free(result->key); + tor_free(result); + return NULL; + } + break; + case CONFIG_TYPE_ISOTIME: + if (*(time_t*)value) { + result->value = tor_malloc(ISO_TIME_LEN+1); + format_iso_time(result->value, *(time_t*)value); + } else { + tor_free(result->key); + tor_free(result); + } + escape_val = 0; /* Can't need escape. */ + break; + case CONFIG_TYPE_PORT: + if (*(int*)value == CFG_AUTO_PORT) { + result->value = tor_strdup("auto"); + escape_val = 0; + break; + } + /* fall through */ + case CONFIG_TYPE_CSV_INTERVAL: + case CONFIG_TYPE_INTERVAL: + case CONFIG_TYPE_MSEC_INTERVAL: + case CONFIG_TYPE_UINT: + case CONFIG_TYPE_INT: + /* This means every or_options_t uint or bool element + * needs to be an int. Not, say, a uint16_t or char. */ + tor_asprintf(&result->value, "%d", *(int*)value); + escape_val = 0; /* Can't need escape. */ + break; + case CONFIG_TYPE_MEMUNIT: + tor_asprintf(&result->value, "%"PRIu64, + (*(uint64_t*)value)); + escape_val = 0; /* Can't need escape. */ + break; + case CONFIG_TYPE_DOUBLE: + tor_asprintf(&result->value, "%f", *(double*)value); + escape_val = 0; /* Can't need escape. */ + break; + + case CONFIG_TYPE_AUTOBOOL: + if (*(int*)value == -1) { + result->value = tor_strdup("auto"); + escape_val = 0; + break; + } + /* fall through */ + case CONFIG_TYPE_BOOL: + result->value = tor_strdup(*(int*)value ? "1" : "0"); + escape_val = 0; /* Can't need escape. */ + break; + case CONFIG_TYPE_ROUTERSET: + result->value = routerset_to_string(*(routerset_t**)value); + break; + case CONFIG_TYPE_CSV: + if (*(smartlist_t**)value) + result->value = + smartlist_join_strings(*(smartlist_t**)value, ",", 0, NULL); + else + result->value = tor_strdup(""); + break; + case CONFIG_TYPE_OBSOLETE: + log_fn(LOG_INFO, LD_CONFIG, + "You asked me for the value of an obsolete config option '%s'.", + key); + tor_free(result->key); + tor_free(result); + return NULL; + case CONFIG_TYPE_LINELIST_S: + tor_free(result->key); + tor_free(result); + result = config_lines_dup_and_filter(*(const config_line_t **)value, + key); + break; + case CONFIG_TYPE_LINELIST: + case CONFIG_TYPE_LINELIST_V: + tor_free(result->key); + tor_free(result); + result = config_lines_dup(*(const config_line_t**)value); + break; + default: + tor_free(result->key); + tor_free(result); + log_warn(LD_BUG,"Unknown type %d for known key '%s'", + var->type, key); + return NULL; + } + + if (escape_val) { + config_line_t *line; + for (line = result; line; line = line->next) { + if (line->value && config_value_needs_escape(line->value)) { + char *newval = esc_for_log(line->value); + tor_free(line->value); + line->value = newval; + } + } + } + + return result; +} +/** Iterate through the linked list of requested options list. + * For each item, convert as appropriate and assign to options. + * If an item is unrecognized, set *msg and return -1 immediately, + * else return 0 for success. + * + * If clear_first, interpret config options as replacing (not + * extending) their previous values. If clear_first is set, + * then use_defaults to decide if you set to defaults after + * clearing, or make the value 0 or NULL. + * + * Here are the use cases: + * 1. A non-empty AllowInvalid line in your torrc. Appends to current + * if linelist, replaces current if csv. + * 2. An empty AllowInvalid line in your torrc. Should clear it. + * 3. "RESETCONF AllowInvalid" sets it to default. + * 4. "SETCONF AllowInvalid" makes it NULL. + * 5. "SETCONF AllowInvalid=foo" clears it and sets it to "foo". + * + * Use_defaults Clear_first + * 0 0 "append" + * 1 0 undefined, don't use + * 0 1 "set to null first" + * 1 1 "set to defaults first" + * Return 0 on success, -1 on bad key, -2 on bad value. + * + * As an additional special case, if a LINELIST config option has + * no value and clear_first is 0, then warn and ignore it. + */ + +/* +There are three call cases for config_assign() currently. + +Case one: Torrc entry +options_init_from_torrc() calls config_assign(0, 0) + calls config_assign_line(0, 0). + if value is empty, calls config_reset(0) and returns. + calls config_assign_value(), appends. + +Case two: setconf +options_trial_assign() calls config_assign(0, 1) + calls config_reset_line(0) + calls config_reset(0) + calls option_clear(). + calls config_assign_line(0, 1). + if value is empty, returns. + calls config_assign_value(), appends. + +Case three: resetconf +options_trial_assign() calls config_assign(1, 1) + calls config_reset_line(1) + calls config_reset(1) + calls option_clear(). + calls config_assign_value(default) + calls config_assign_line(1, 1). + returns. +*/ +int +config_assign(const config_format_t *fmt, void *options, config_line_t *list, + unsigned config_assign_flags, char **msg) +{ + config_line_t *p; + bitarray_t *options_seen; + const int n_options = config_count_options(fmt); + const unsigned clear_first = config_assign_flags & CAL_CLEAR_FIRST; + const unsigned use_defaults = config_assign_flags & CAL_USE_DEFAULTS; + + CONFIG_CHECK(fmt, options); + + /* pass 1: normalize keys */ + for (p = list; p; p = p->next) { + const char *full = config_expand_abbrev(fmt, p->key, 0, 1); + if (strcmp(full,p->key)) { + tor_free(p->key); + p->key = tor_strdup(full); + } + } + + /* pass 2: if we're reading from a resetting source, clear all + * mentioned config options, and maybe set to their defaults. */ + if (clear_first) { + for (p = list; p; p = p->next) + config_reset_line(fmt, options, p->key, use_defaults); + } + + options_seen = bitarray_init_zero(n_options); + /* pass 3: assign. */ + while (list) { + int r; + if ((r=config_assign_line(fmt, options, list, config_assign_flags, + options_seen, msg))) { + bitarray_free(options_seen); + return r; + } + list = list->next; + } + bitarray_free(options_seen); + + /** Now we're done assigning a group of options to the configuration. + * Subsequent group assignments should _replace_ linelists, not extend + * them. */ + config_mark_lists_fragile(fmt, options); + + return 0; +} + +/** Reset config option var to 0, 0.0, NULL, or the equivalent. + * Called from config_reset() and config_free(). */ +static void +config_clear(const config_format_t *fmt, void *options, + const config_var_t *var) +{ + void *lvalue = STRUCT_VAR_P(options, var->var_offset); + (void)fmt; /* unused */ + switch (var->type) { + case CONFIG_TYPE_STRING: + case CONFIG_TYPE_FILENAME: + tor_free(*(char**)lvalue); + break; + case CONFIG_TYPE_DOUBLE: + *(double*)lvalue = 0.0; + break; + case CONFIG_TYPE_ISOTIME: + *(time_t*)lvalue = 0; + break; + case CONFIG_TYPE_CSV_INTERVAL: + case CONFIG_TYPE_INTERVAL: + case CONFIG_TYPE_MSEC_INTERVAL: + case CONFIG_TYPE_UINT: + case CONFIG_TYPE_INT: + case CONFIG_TYPE_PORT: + case CONFIG_TYPE_BOOL: + *(int*)lvalue = 0; + break; + case CONFIG_TYPE_AUTOBOOL: + *(int*)lvalue = -1; + break; + case CONFIG_TYPE_MEMUNIT: + *(uint64_t*)lvalue = 0; + break; + case CONFIG_TYPE_ROUTERSET: + if (*(routerset_t**)lvalue) { + routerset_free(*(routerset_t**)lvalue); + *(routerset_t**)lvalue = NULL; + } + break; + case CONFIG_TYPE_CSV: + if (*(smartlist_t**)lvalue) { + SMARTLIST_FOREACH(*(smartlist_t **)lvalue, char *, cp, tor_free(cp)); + smartlist_free(*(smartlist_t **)lvalue); + *(smartlist_t **)lvalue = NULL; + } + break; + case CONFIG_TYPE_LINELIST: + case CONFIG_TYPE_LINELIST_S: + config_free_lines(*(config_line_t **)lvalue); + *(config_line_t **)lvalue = NULL; + break; + case CONFIG_TYPE_LINELIST_V: + /* handled by linelist_s. */ + break; + case CONFIG_TYPE_OBSOLETE: + break; + } +} + +/** Clear the option indexed by var in options. Then if + * use_defaults, set it to its default value. + * Called by config_init() and option_reset_line() and option_assign_line(). */ +static void +config_reset(const config_format_t *fmt, void *options, + const config_var_t *var, int use_defaults) +{ + config_line_t *c; + char *msg = NULL; + CONFIG_CHECK(fmt, options); + config_clear(fmt, options, var); /* clear it first */ + if (!use_defaults) + return; /* all done */ + if (var->initvalue) { + c = tor_malloc_zero(sizeof(config_line_t)); + c->key = tor_strdup(var->name); + c->value = tor_strdup(var->initvalue); + if (config_assign_value(fmt, options, c, &msg) < 0) { + log_warn(LD_BUG, "Failed to assign default: %s", msg); + tor_free(msg); /* if this happens it's a bug */ + } + config_free_lines(c); + } +} + +/** Release storage held by options. */ +void +config_free_(const config_format_t *fmt, void *options) +{ + int i; + + if (!options) + return; + + tor_assert(fmt); + + for (i=0; fmt->vars[i].name; ++i) + config_clear(fmt, options, &(fmt->vars[i])); + if (fmt->extra) { + config_line_t **linep = STRUCT_VAR_P(options, fmt->extra->var_offset); + config_free_lines(*linep); + *linep = NULL; + } + tor_free(options); +} + +/** Return true iff the option name has the same value in o1 + * and o2. Must not be called for LINELIST_S or OBSOLETE options. + */ +int +config_is_same(const config_format_t *fmt, + const void *o1, const void *o2, + const char *name) +{ + config_line_t *c1, *c2; + int r = 1; + CONFIG_CHECK(fmt, o1); + CONFIG_CHECK(fmt, o2); + + c1 = config_get_assigned_option(fmt, o1, name, 0); + c2 = config_get_assigned_option(fmt, o2, name, 0); + r = config_lines_eq(c1, c2); + config_free_lines(c1); + config_free_lines(c2); + return r; +} + +/** Copy storage held by old into a new or_options_t and return it. */ +void * +config_dup(const config_format_t *fmt, const void *old) +{ + void *newopts; + int i; + config_line_t *line; + + newopts = config_new(fmt); + for (i=0; fmt->vars[i].name; ++i) { + if (fmt->vars[i].type == CONFIG_TYPE_LINELIST_S) + continue; + if (fmt->vars[i].type == CONFIG_TYPE_OBSOLETE) + continue; + line = config_get_assigned_option(fmt, old, fmt->vars[i].name, 0); + if (line) { + char *msg = NULL; + if (config_assign(fmt, newopts, line, 0, &msg) < 0) { + log_err(LD_BUG, "config_get_assigned_option() generated " + "something we couldn't config_assign(): %s", msg); + tor_free(msg); + tor_assert(0); + } + } + config_free_lines(line); + } + return newopts; +} +/** Set all vars in the configuration object options to their default + * values. */ +void +config_init(const config_format_t *fmt, void *options) +{ + int i; + const config_var_t *var; + CONFIG_CHECK(fmt, options); + + for (i=0; fmt->vars[i].name; ++i) { + var = &fmt->vars[i]; + if (!var->initvalue) + continue; /* defaults to NULL or 0 */ + config_reset(fmt, options, var, 1); + } +} + +/** Allocate and return a new string holding the written-out values of the vars + * in 'options'. If 'minimal', do not write out any default-valued vars. + * Else, if comment_defaults, write default values as comments. + */ +char * +config_dump(const config_format_t *fmt, const void *default_options, + const void *options, int minimal, + int comment_defaults) +{ + smartlist_t *elements; + const void *defaults = default_options; + void *defaults_tmp = NULL; + config_line_t *line, *assigned; + char *result; + int i; + char *msg = NULL; + + if (defaults == NULL) { + defaults = defaults_tmp = config_new(fmt); + config_init(fmt, defaults_tmp); + } + + /* XXX use a 1 here so we don't add a new log line while dumping */ + if (default_options == NULL) { + if (fmt->validate_fn(NULL, defaults_tmp, defaults_tmp, 1, &msg) < 0) { + log_err(LD_BUG, "Failed to validate default config: %s", msg); + tor_free(msg); + tor_assert(0); + } + } + + elements = smartlist_new(); + for (i=0; fmt->vars[i].name; ++i) { + int comment_option = 0; + if (fmt->vars[i].type == CONFIG_TYPE_OBSOLETE || + fmt->vars[i].type == CONFIG_TYPE_LINELIST_S) + continue; + /* Don't save 'hidden' control variables. */ + if (!strcmpstart(fmt->vars[i].name, "__")) + continue; + if (minimal && config_is_same(fmt, options, defaults, fmt->vars[i].name)) + continue; + else if (comment_defaults && + config_is_same(fmt, options, defaults, fmt->vars[i].name)) + comment_option = 1; + + line = assigned = + config_get_assigned_option(fmt, options, fmt->vars[i].name, 1); + + for (; line; line = line->next) { + if (!strcmpstart(line->key, "__")) { + /* This check detects "hidden" variables inside LINELIST_V structures. + */ + continue; + } + smartlist_add_asprintf(elements, "%s%s %s\n", + comment_option ? "# " : "", + line->key, line->value); + } + config_free_lines(assigned); + } + + if (fmt->extra) { + line = *(config_line_t**)STRUCT_VAR_P(options, fmt->extra->var_offset); + for (; line; line = line->next) { + smartlist_add_asprintf(elements, "%s %s\n", line->key, line->value); + } + } + + result = smartlist_join_strings(elements, "", 0, NULL); + SMARTLIST_FOREACH(elements, char *, cp, tor_free(cp)); + smartlist_free(elements); + if (defaults_tmp) + config_free(fmt, defaults_tmp); + return result; +} + +/** Mapping from a unit name to a multiplier for converting that unit into a + * base unit. Used by config_parse_unit. */ +struct unit_table_t { + const char *unit; /**< The name of the unit */ + uint64_t multiplier; /**< How many of the base unit appear in this unit */ +}; + +/** Table to map the names of memory units to the number of bytes they + * contain. */ +static struct unit_table_t memory_units[] = { + { "", 1 }, + { "b", 1<< 0 }, + { "byte", 1<< 0 }, + { "bytes", 1<< 0 }, + { "kb", 1<<10 }, + { "kbyte", 1<<10 }, + { "kbytes", 1<<10 }, + { "kilobyte", 1<<10 }, + { "kilobytes", 1<<10 }, + { "kilobits", 1<<7 }, + { "kilobit", 1<<7 }, + { "kbits", 1<<7 }, + { "kbit", 1<<7 }, + { "m", 1<<20 }, + { "mb", 1<<20 }, + { "mbyte", 1<<20 }, + { "mbytes", 1<<20 }, + { "megabyte", 1<<20 }, + { "megabytes", 1<<20 }, + { "megabits", 1<<17 }, + { "megabit", 1<<17 }, + { "mbits", 1<<17 }, + { "mbit", 1<<17 }, + { "gb", 1<<30 }, + { "gbyte", 1<<30 }, + { "gbytes", 1<<30 }, + { "gigabyte", 1<<30 }, + { "gigabytes", 1<<30 }, + { "gigabits", 1<<27 }, + { "gigabit", 1<<27 }, + { "gbits", 1<<27 }, + { "gbit", 1<<27 }, + { "tb", UINT64_C(1)<<40 }, + { "tbyte", UINT64_C(1)<<40 }, + { "tbytes", UINT64_C(1)<<40 }, + { "terabyte", UINT64_C(1)<<40 }, + { "terabytes", UINT64_C(1)<<40 }, + { "terabits", UINT64_C(1)<<37 }, + { "terabit", UINT64_C(1)<<37 }, + { "tbits", UINT64_C(1)<<37 }, + { "tbit", UINT64_C(1)<<37 }, + { NULL, 0 }, +}; + +/** Table to map the names of time units to the number of seconds they + * contain. */ +static struct unit_table_t time_units[] = { + { "", 1 }, + { "second", 1 }, + { "seconds", 1 }, + { "minute", 60 }, + { "minutes", 60 }, + { "hour", 60*60 }, + { "hours", 60*60 }, + { "day", 24*60*60 }, + { "days", 24*60*60 }, + { "week", 7*24*60*60 }, + { "weeks", 7*24*60*60 }, + { "month", 2629728, }, /* about 30.437 days */ + { "months", 2629728, }, + { NULL, 0 }, +}; + +/** Table to map the names of time units to the number of milliseconds + * they contain. */ +static struct unit_table_t time_msec_units[] = { + { "", 1 }, + { "msec", 1 }, + { "millisecond", 1 }, + { "milliseconds", 1 }, + { "second", 1000 }, + { "seconds", 1000 }, + { "minute", 60*1000 }, + { "minutes", 60*1000 }, + { "hour", 60*60*1000 }, + { "hours", 60*60*1000 }, + { "day", 24*60*60*1000 }, + { "days", 24*60*60*1000 }, + { "week", 7*24*60*60*1000 }, + { "weeks", 7*24*60*60*1000 }, + { NULL, 0 }, +}; + +/** Parse a string val containing a number, zero or more + * spaces, and an optional unit string. If the unit appears in the + * table u, then multiply the number by the unit multiplier. + * On success, set *ok to 1 and return this product. + * Otherwise, set *ok to 0. + */ +static uint64_t +config_parse_units(const char *val, struct unit_table_t *u, int *ok) +{ + uint64_t v = 0; + double d = 0; + int use_float = 0; + char *cp; + + tor_assert(ok); + + v = tor_parse_uint64(val, 10, 0, UINT64_MAX, ok, &cp); + if (!*ok || (cp && *cp == '.')) { + d = tor_parse_double(val, 0, (double)UINT64_MAX, ok, &cp); + if (!*ok) + goto done; + use_float = 1; + } + + if (!cp) { + *ok = 1; + v = use_float ? ((uint64_t)d) : v; + goto done; + } + + cp = (char*) eat_whitespace(cp); + + for ( ;u->unit;++u) { + if (!strcasecmp(u->unit, cp)) { + if (use_float) + v = (uint64_t)(u->multiplier * d); + else + v *= u->multiplier; + *ok = 1; + goto done; + } + } + log_warn(LD_CONFIG, "Unknown unit '%s'.", cp); + *ok = 0; + done: + + if (*ok) + return v; + else + return 0; +} + +/** Parse a string in the format "number unit", where unit is a unit of + * information (byte, KB, M, etc). On success, set *ok to true + * and return the number of bytes specified. Otherwise, set + * *ok to false and return 0. */ +static uint64_t +config_parse_memunit(const char *s, int *ok) +{ + uint64_t u = config_parse_units(s, memory_units, ok); + return u; +} + +/** Parse a string in the format "number unit", where unit is a unit of + * time in milliseconds. On success, set *ok to true and return + * the number of milliseconds in the provided interval. Otherwise, set + * *ok to 0 and return -1. */ +static int +config_parse_msec_interval(const char *s, int *ok) +{ + uint64_t r; + r = config_parse_units(s, time_msec_units, ok); + if (r > INT_MAX) { + log_warn(LD_CONFIG, "Msec interval '%s' is too long", s); + *ok = 0; + return -1; + } + return (int)r; +} + +/** Parse a string in the format "number unit", where unit is a unit of time. + * On success, set *ok to true and return the number of seconds in + * the provided interval. Otherwise, set *ok to 0 and return -1. + */ +static int +config_parse_interval(const char *s, int *ok) +{ + uint64_t r; + r = config_parse_units(s, time_units, ok); + if (r > INT_MAX) { + log_warn(LD_CONFIG, "Interval '%s' is too long", s); + *ok = 0; + return -1; + } + return (int)r; +} diff --git a/src/app/config/confparse.h b/src/app/config/confparse.h new file mode 100644 index 0000000000..cbd2ea88e2 --- /dev/null +++ b/src/app/config/confparse.h @@ -0,0 +1,221 @@ +/* Copyright (c) 2001 Matej Pfajfar. + * Copyright (c) 2001-2004, Roger Dingledine. + * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson. + * Copyright (c) 2007-2018, The Tor Project, Inc. */ +/* See LICENSE for licensing information */ + +#ifndef TOR_CONFPARSE_H +#define TOR_CONFPARSE_H + +/** Enumeration of types which option values can take */ +typedef enum config_type_t { + CONFIG_TYPE_STRING = 0, /**< An arbitrary string. */ + CONFIG_TYPE_FILENAME, /**< A filename: some prefixes get expanded. */ + CONFIG_TYPE_UINT, /**< A non-negative integer less than MAX_INT */ + CONFIG_TYPE_INT, /**< Any integer. */ + CONFIG_TYPE_PORT, /**< A port from 1...65535, 0 for "not set", or + * "auto". */ + CONFIG_TYPE_INTERVAL, /**< A number of seconds, with optional units*/ + CONFIG_TYPE_MSEC_INTERVAL,/**< A number of milliseconds, with optional + * units */ + CONFIG_TYPE_MEMUNIT, /**< A number of bytes, with optional units*/ + CONFIG_TYPE_DOUBLE, /**< A floating-point value */ + CONFIG_TYPE_BOOL, /**< A boolean value, expressed as 0 or 1. */ + CONFIG_TYPE_AUTOBOOL, /**< A boolean+auto value, expressed 0 for false, + * 1 for true, and -1 for auto */ + CONFIG_TYPE_ISOTIME, /**< An ISO-formatted time relative to UTC. */ + CONFIG_TYPE_CSV, /**< A list of strings, separated by commas and + * optional whitespace. */ + CONFIG_TYPE_CSV_INTERVAL, /**< A list of strings, separated by commas and + * optional whitespace, representing intervals in + * seconds, with optional units. We allow + * multiple values here for legacy reasons, but + * ignore every value after the first. */ + CONFIG_TYPE_LINELIST, /**< Uninterpreted config lines */ + CONFIG_TYPE_LINELIST_S, /**< Uninterpreted, context-sensitive config lines, + * mixed with other keywords. */ + CONFIG_TYPE_LINELIST_V, /**< Catch-all "virtual" option to summarize + * context-sensitive config lines when fetching. + */ + CONFIG_TYPE_ROUTERSET, /**< A list of router names, addrs, and fps, + * parsed into a routerset_t. */ + CONFIG_TYPE_OBSOLETE, /**< Obsolete (ignored) option. */ +} config_type_t; + +#ifdef TOR_UNIT_TESTS +/** + * Union used when building in test mode typechecking the members of a type + * used with confparse.c. See CONF_CHECK_VAR_TYPE for a description of how + * it is used. */ +typedef union { + char **STRING; + char **FILENAME; + int *UINT; /* yes, really: Even though the confparse type is called + * "UINT", it still uses the C int type -- it just enforces that + * the values are in range [0,INT_MAX]. + */ + int *INT; + int *PORT; + int *INTERVAL; + int *MSEC_INTERVAL; + uint64_t *MEMUNIT; + double *DOUBLE; + int *BOOL; + int *AUTOBOOL; + time_t *ISOTIME; + smartlist_t **CSV; + int *CSV_INTERVAL; + struct config_line_t **LINELIST; + struct config_line_t **LINELIST_S; + struct config_line_t **LINELIST_V; + routerset_t **ROUTERSET; +} confparse_dummy_values_t; +#endif /* defined(TOR_UNIT_TESTS) */ + +/** An abbreviation for a configuration option allowed on the command line. */ +typedef struct config_abbrev_t { + const char *abbreviated; + const char *full; + int commandline_only; + int warn; +} config_abbrev_t; + +typedef struct config_deprecation_t { + const char *name; + const char *why_deprecated; +} config_deprecation_t; + +/* Handy macro for declaring "In the config file or on the command line, + * you can abbreviate toks as tok". */ +#define PLURAL(tok) { #tok, #tok "s", 0, 0 } + +/** A variable allowed in the configuration file or on the command line. */ +typedef struct config_var_t { + const char *name; /**< The full keyword (case insensitive). */ + config_type_t type; /**< How to interpret the type and turn it into a + * value. */ + off_t var_offset; /**< Offset of the corresponding member of or_options_t. */ + const char *initvalue; /**< String (or null) describing initial value. */ + +#ifdef TOR_UNIT_TESTS + /** Used for compiler-magic to typecheck the corresponding field in the + * corresponding struct. Only used in unit test mode, at compile-time. */ + confparse_dummy_values_t var_ptr_dummy; +#endif +} config_var_t; + +/* Macros to define extra members inside config_var_t fields, and at the + * end of a list of them. + */ +#ifdef TOR_UNIT_TESTS +/* This is a somewhat magic type-checking macro for users of confparse.c. + * It initializes a union member "confparse_dummy_values_t.conftype" with + * the address of a static member "tp_dummy.member". This + * will give a compiler warning unless the member field is of the correct + * type. + * + * (This warning is mandatory, because a type mismatch here violates the type + * compatibility constraint for simple assignment, and requires a diagnostic, + * according to the C spec.) + * + * For example, suppose you say: + * "CONF_CHECK_VAR_TYPE(or_options_t, STRING, Address)". + * Then this macro will evaluate to: + * { .STRING = &or_options_t_dummy.Address } + * And since confparse_dummy_values_t.STRING has type "char **", that + * expression will create a warning unless or_options_t.Address also + * has type "char *". + */ +#define CONF_CHECK_VAR_TYPE(tp, conftype, member) \ + { . conftype = &tp ## _dummy . member } +#define CONF_TEST_MEMBERS(tp, conftype, member) \ + , CONF_CHECK_VAR_TYPE(tp, conftype, member) +#define END_OF_CONFIG_VARS \ + { NULL, CONFIG_TYPE_OBSOLETE, 0, NULL, { .INT=NULL } } +#define DUMMY_TYPECHECK_INSTANCE(tp) \ + static tp tp ## _dummy +#else /* !(defined(TOR_UNIT_TESTS)) */ +#define CONF_TEST_MEMBERS(tp, conftype, member) +#define END_OF_CONFIG_VARS { NULL, CONFIG_TYPE_OBSOLETE, 0, NULL } +/* Repeatedly declarable incomplete struct to absorb redundant semicolons */ +#define DUMMY_TYPECHECK_INSTANCE(tp) \ + struct tor_semicolon_eater +#endif /* defined(TOR_UNIT_TESTS) */ + +/** Type of a callback to validate whether a given configuration is + * well-formed and consistent. See options_trial_assign() for documentation + * of arguments. */ +typedef int (*validate_fn_t)(void*,void*,void*,int,char**); + +/** Information on the keys, value types, key-to-struct-member mappings, + * variable descriptions, validation functions, and abbreviations for a + * configuration or storage format. */ +typedef struct config_format_t { + size_t size; /**< Size of the struct that everything gets parsed into. */ + uint32_t magic; /**< Required 'magic value' to make sure we have a struct + * of the right type. */ + off_t magic_offset; /**< Offset of the magic value within the struct. */ + config_abbrev_t *abbrevs; /**< List of abbreviations that we expand when + * parsing this format. */ + const config_deprecation_t *deprecations; /** List of deprecated options */ + config_var_t *vars; /**< List of variables we recognize, their default + * values, and where we stick them in the structure. */ + validate_fn_t validate_fn; /**< Function to validate config. */ + /** If present, extra is a LINELIST variable for unrecognized + * lines. Otherwise, unrecognized lines are an error. */ + config_var_t *extra; +} config_format_t; + +/** Macro: assert that cfg has the right magic field for format + * fmt. */ +#define CONFIG_CHECK(fmt, cfg) STMT_BEGIN \ + tor_assert(fmt && cfg); \ + tor_assert((fmt)->magic == \ + *(uint32_t*)STRUCT_VAR_P(cfg,fmt->magic_offset)); \ + STMT_END + +#define CAL_USE_DEFAULTS (1u<<0) +#define CAL_CLEAR_FIRST (1u<<1) +#define CAL_WARN_DEPRECATIONS (1u<<2) + +void *config_new(const config_format_t *fmt); +void config_free_(const config_format_t *fmt, void *options); +#define config_free(fmt, options) do { \ + config_free_((fmt), (options)); \ + (options) = NULL; \ + } while (0) + +struct config_line_t *config_get_assigned_option(const config_format_t *fmt, + const void *options, const char *key, + int escape_val); +int config_is_same(const config_format_t *fmt, + const void *o1, const void *o2, + const char *name); +void config_init(const config_format_t *fmt, void *options); +void *config_dup(const config_format_t *fmt, const void *old); +char *config_dump(const config_format_t *fmt, const void *default_options, + const void *options, int minimal, + int comment_defaults); +int config_assign(const config_format_t *fmt, void *options, + struct config_line_t *list, + unsigned flags, char **msg); +config_var_t *config_find_option_mutable(config_format_t *fmt, + const char *key); +const char *config_find_deprecation(const config_format_t *fmt, + const char *key); +const config_var_t *config_find_option(const config_format_t *fmt, + const char *key); +const char *config_expand_abbrev(const config_format_t *fmt, + const char *option, + int command_line, int warn_obsolete); +void warn_deprecated_option(const char *what, const char *why); + +/* Helper macros to compare an option across two configuration objects */ +#define CFG_EQ_BOOL(a,b,opt) ((a)->opt == (b)->opt) +#define CFG_EQ_INT(a,b,opt) ((a)->opt == (b)->opt) +#define CFG_EQ_STRING(a,b,opt) (!strcmp_opt((a)->opt, (b)->opt)) +#define CFG_EQ_SMARTLIST(a,b,opt) smartlist_strings_eq((a)->opt, (b)->opt) +#define CFG_EQ_LINELIST(a,b,opt) config_lines_eq((a)->opt, (b)->opt) +#define CFG_EQ_ROUTERSET(a,b,opt) routerset_equal((a)->opt, (b)->opt) + +#endif /* !defined(TOR_CONFPARSE_H) */ diff --git a/src/app/config/fallback_dirs.inc b/src/app/config/fallback_dirs.inc new file mode 100644 index 0000000000..c446152e6a --- /dev/null +++ b/src/app/config/fallback_dirs.inc @@ -0,0 +1,826 @@ +/* type=fallback */ +/* version=2.0.0 */ +/* timestamp=20180106205601 */ +/* ===== */ +/* Whitelist & blacklist excluded 810 of 1009 candidates. */ +/* Checked IPv4 DirPorts served a consensus within 15.0s. */ +/* +Final Count: 143 (Eligible 198, Target 230 (1154 * 0.20), Max 200) +Excluded: 55 (Same Operator 34, Failed/Skipped Download 14, Excess 7) +Bandwidth Range: 0.9 - 131.1 MByte/s + +MERGED WITH: + +Final Count: 139 (Eligible 199, Target 232 (1161 * 0.20), Max 200) +Excluded: 60 (Same Operator 34, Failed/Skipped Download 19, Excess 7) +Bandwidth Range: 1.1 - 131.1 MByte/s +*/ +/* +Onionoo Source: details Date: 2018-01-06 20:00:00 Version: 5.0 +URL: https:onionoo.torproject.orgdetails?fieldsfingerprint%2Cnickname%2Ccontact%2Clast_changed_address_or_port%2Cconsensus_weight%2Cadvertised_bandwidth%2Cor_addresses%2Cdir_address%2Crecommended_version%2Cflags%2Ceffective_family%2Cplatform&flagV2Dir&typerelay&last_seen_days-0&first_seen_days90- +*/ +/* +Onionoo Source: uptime Date: 2018-01-06 20:00:00 Version: 5.0 +URL: https:onionoo.torproject.orguptime?first_seen_days90-&flagV2Dir&typerelay&last_seen_days-0 +*/ +/* ===== */ +"185.13.39.197:80 orport=443 id=001524DD403D729F08F7E5D77813EF12756CFA8D" +/* nickname=Neldoreth */ +/* extrainfo=0 */ +/* ===== */ +, +"176.10.104.240:80 orport=443 id=0111BA9B604669E636FFD5B503F382A4B7AD6E80" +/* nickname=DigiGesTor1e1 */ +/* extrainfo=0 */ +/* ===== */ +, +"185.100.85.61:80 orport=443 id=025B66CEBC070FCB0519D206CF0CF4965C20C96E" +/* nickname=nibbana */ +/* extrainfo=0 */ +/* ===== */ +, +"5.9.110.236:9030 orport=9001 id=0756B7CD4DFC8182BE23143FAC0642F515182CEB" +" ipv6=[2a01:4f8:162:51e2::2]:9001" +/* nickname=rueckgrat */ +/* extrainfo=1 */ +/* ===== */ +, +"163.172.149.155:80 orport=443 id=0B85617241252517E8ECF2CFC7F4C1A32DCD153F" +/* nickname=niij02 */ +/* extrainfo=0 */ +/* ===== */ +, +"5.39.92.199:80 orport=443 id=0BEA4A88D069753218EAAAD6D22EA87B9A1319D6" +" ipv6=[2001:41d0:8:b1c7::1]:443" +/* nickname=BaelorTornodePw */ +/* extrainfo=0 */ +/* ===== */ +, +"163.172.25.118:80 orport=22 id=0CF8F3E6590F45D50B70F2F7DA6605ECA6CD408F" +/* nickname=torpidsFRonline4 */ +/* extrainfo=0 */ +/* ===== */ +, +"178.62.197.82:80 orport=443 id=0D3EBA17E1C78F1E9900BABDB23861D46FCAF163" +/* nickname=HY100 */ +/* extrainfo=0 */ +/* ===== */ +, +"185.100.86.100:80 orport=443 id=0E8C0C8315B66DB5F703804B3889A1DD66C67CE0" +/* nickname=saveyourprivacyex1 */ +/* extrainfo=0 */ +/* ===== */ +, +"37.120.174.249:80 orport=443 id=11DF0017A43AF1F08825CD5D973297F81AB00FF3" +" ipv6=[2a03:4000:6:724c:df98:15f9:b34d:443]:443" +/* nickname=gGDHjdcC6zAlM8k08lX */ +/* extrainfo=0 */ +/* ===== */ +, +"193.11.114.43:9030 orport=9001 id=12AD30E5D25AA67F519780E2111E611A455FDC89" +" ipv6=[2001:6b0:30:1000::99]:9050" +/* nickname=mdfnet1 */ +/* extrainfo=0 */ +/* ===== */ +, +"37.157.195.87:8030 orport=443 id=12FD624EE73CEF37137C90D38B2406A66F68FAA2" +/* nickname=thanatosCZ */ +/* extrainfo=0 */ +/* ===== */ +, +"178.16.208.59:80 orport=443 id=136F9299A5009A4E0E96494E723BDB556FB0A26B" +" ipv6=[2a00:1c20:4089:1234:bff6:e1bb:1ce3:8dc6]:443" +/* nickname=bakunin2 */ +/* extrainfo=0 */ +/* ===== */ +, +"163.172.138.22:80 orport=443 id=16102E458460349EE45C0901DAA6C30094A9BBEA" +" ipv6=[2001:bc8:4400:2100::1:3]:443" +/* nickname=mkultra */ +/* extrainfo=0 */ +/* ===== */ +, +"178.62.60.37:80 orport=443 id=175921396C7C426309AB03775A9930B6F611F794" +/* nickname=lovejoy */ +/* extrainfo=0 */ +/* ===== */ +, +"171.25.193.25:80 orport=443 id=185663B7C12777F052B2C2D23D7A239D8DA88A0F" +" ipv6=[2001:67c:289c::25]:443" +/* nickname=DFRI5 */ +/* extrainfo=0 */ +/* ===== */ +, +"149.56.141.138:9030 orport=9001 id=1938EBACBB1A7BFA888D9623C90061130E63BB3F" +/* nickname=Aerodynamik04 */ +/* extrainfo=0 */ +/* ===== */ +, +"81.7.14.253:9001 orport=443 id=1AE039EE0B11DB79E4B4B29CBA9F752864A0259E" +/* nickname=Ichotolot60 */ +/* extrainfo=0 */ +/* ===== */ +, +"163.172.53.84:143 orport=21 id=1C90D3AEADFF3BCD079810632C8B85637924A58E" +" ipv6=[2001:bc8:24f8::]:21" +/* nickname=Multivac */ +/* extrainfo=0 */ +/* ===== */ +, +"46.101.151.222:80 orport=443 id=1DBAED235E3957DE1ABD25B4206BE71406FB61F8" +/* nickname=flanders */ +/* extrainfo=0 */ +/* ===== */ +, +"91.219.237.229:80 orport=443 id=1ECD73B936CB6E6B3CD647CC204F108D9DF2C9F7" +/* nickname=JakeDidNothingWrong */ +/* extrainfo=0 */ +/* ===== */ +, +"199.184.246.250:80 orport=443 id=1F6ABD086F40B890A33C93CC4606EE68B31C9556" +" ipv6=[2620:124:1009:1::171]:443" +/* nickname=dao */ +/* extrainfo=0 */ +/* ===== */ +, +"185.129.249.124:9030 orport=9001 id=1FA8F638298645BE58AC905276680889CB795A94" +/* nickname=treadstone */ +/* extrainfo=0 */ +/* ===== */ +, +"212.47.229.2:9030 orport=9001 id=20462CBA5DA4C2D963567D17D0B7249718114A68" +" ipv6=[2001:bc8:4400:2100::f03]:9001" +/* nickname=scaletor */ +/* extrainfo=0 */ +/* ===== */ +, +"77.247.181.164:80 orport=443 id=204DFD2A2C6A0DC1FA0EACB495218E0B661704FD" +/* nickname=HaveHeart */ +/* extrainfo=0 */ +/* ===== */ +, +"163.172.176.167:80 orport=443 id=230A8B2A8BA861210D9B4BA97745AEC217A94207" +/* nickname=niij01 */ +/* extrainfo=0 */ +/* ===== */ +, +"37.200.98.5:80 orport=443 id=231C2B9C8C31C295C472D031E06964834B745996" +" ipv6=[2a00:1158:3::11a]:993" +/* nickname=torpidsDEdomainf */ +/* extrainfo=0 */ +/* ===== */ +, +"138.201.250.33:9012 orport=9011 id=2BA2C8E96B2590E1072AECE2BDB5C48921BF8510" +/* nickname=storm */ +/* extrainfo=0 */ +/* ===== */ +, +"178.16.208.56:80 orport=443 id=2CDCFED0142B28B002E89D305CBA2E26063FADE2" +" ipv6=[2a00:1c20:4089:1234:cd49:b58a:9ebe:67ec]:443" +/* nickname=jaures */ +/* extrainfo=0 */ +/* ===== */ +, +"97.74.237.196:9030 orport=9001 id=2F0F32AB1E5B943CA7D062C03F18960C86E70D94" +/* nickname=Minotaur */ +/* extrainfo=0 */ +/* ===== */ +, +"64.113.32.29:9030 orport=9001 id=30C19B81981F450C402306E2E7CFB6C3F79CB6B2" +/* nickname=Libero */ +/* extrainfo=0 */ +/* ===== */ +, +"80.127.117.180:80 orport=443 id=328E54981C6DDD7D89B89E418724A4A7881E3192" +" ipv6=[2001:985:e77:10::4]:443" +/* nickname=sjc01 */ +/* extrainfo=0 */ +/* ===== */ +, +"185.100.84.212:80 orport=443 id=330CD3DB6AD266DC70CDB512B036957D03D9BC59" +" ipv6=[2a06:1700:0:7::1]:443" +/* nickname=TeamTardis */ +/* extrainfo=0 */ +/* ===== */ +, +"163.172.13.165:9030 orport=9001 id=33DA0CAB7C27812EFF2E22C9705630A54D101FEB" +" ipv6=[2001:bc8:38cb:201::8]:9001" +/* nickname=mullbinde9 */ +/* extrainfo=0 */ +/* ===== */ +, +"91.121.23.100:9030 orport=9001 id=3711E80B5B04494C971FB0459D4209AB7F2EA799" +/* nickname=0x3d002 */ +/* extrainfo=0 */ +/* ===== */ +, +"176.126.252.12:21 orport=8080 id=379FB450010D17078B3766C2273303C358C3A442" +" ipv6=[2a02:59e0:0:7::12]:81" +/* nickname=aurora */ +/* extrainfo=1 */ +/* ===== */ +, +"62.210.92.11:9130 orport=9101 id=387B065A38E4DAA16D9D41C2964ECBC4B31D30FF" +" ipv6=[2001:bc8:338c::1]:9101" +/* nickname=redjohn1 */ +/* extrainfo=0 */ +/* ===== */ +, +"198.50.191.95:80 orport=443 id=39F096961ED2576975C866D450373A9913AFDC92" +/* nickname=thomas */ +/* extrainfo=0 */ +/* ===== */ +, +"164.132.77.175:9030 orport=9001 id=3B33F6FCA645AD4E91428A3AF7DC736AD9FB727B" +/* nickname=rofltor1 */ +/* extrainfo=0 */ +/* ===== */ +, +"212.83.154.33:8888 orport=443 id=3C79699D4FBC37DE1A212D5033B56DAE079AC0EF" +/* nickname=bauruine203 */ +/* extrainfo=0 */ +/* ===== */ +, +"176.10.107.180:9030 orport=9001 id=3D7E274A87D9A89AF064C13D1EE4CA1F184F2600" +/* nickname=schokomilch */ +/* extrainfo=0 */ +/* ===== */ +, +"217.79.179.177:9030 orport=9001 id=3E53D3979DB07EFD736661C934A1DED14127B684" +" ipv6=[2001:4ba0:fff9:131:6c4f::90d3]:9001" +/* nickname=Unnamed */ +/* extrainfo=0 */ +/* ===== */ +, +"185.100.85.101:9030 orport=9001 id=4061C553CA88021B8302F0814365070AAE617270" +/* nickname=TorExitRomania */ +/* extrainfo=0 */ +/* ===== */ +, +"199.249.223.61:80 orport=443 id=40E7D6CE5085E4CDDA31D51A29D1457EB53F12AD" +/* nickname=Quintex12 */ +/* extrainfo=0 */ +/* ===== */ +, +"178.17.170.156:9030 orport=9001 id=41C59606AFE1D1AA6EC6EF6719690B856F0B6587" +/* nickname=TorExitMoldova2 */ +/* extrainfo=0 */ +/* ===== */ +, +"178.62.86.96:9030 orport=9001 id=439D0447772CB107B886F7782DBC201FA26B92D1" +" ipv6=[2a03:b0c0:1:d0::3cf:7001]:9050" +/* nickname=pablobm001 */ +/* extrainfo=0 */ +/* ===== */ +, +"163.172.157.213:8080 orport=443 id=4623A9EC53BFD83155929E56D6F7B55B5E718C24" +/* nickname=Cotopaxi */ +/* extrainfo=0 */ +/* ===== */ +, +"31.31.78.49:80 orport=443 id=46791D156C9B6C255C2665D4D8393EC7DBAA7798" +/* nickname=KrigHaBandolo */ +/* extrainfo=0 */ +/* ===== */ +, +"193.70.43.76:9030 orport=9001 id=484A10BA2B8D48A5F0216674C8DD50EF27BC32F3" +/* nickname=Aerodynamik03 */ +/* extrainfo=0 */ +/* ===== */ +, +"37.187.102.186:9030 orport=9001 id=489D94333DF66D57FFE34D9D59CC2D97E2CB0053" +" ipv6=[2001:41d0:a:26ba::1]:9001" +/* nickname=txtfileTorNode65536 */ +/* extrainfo=0 */ +/* ===== */ +, +"51.254.101.242:9002 orport=9001 id=4CC9CC9195EC38645B699A33307058624F660CCF" +/* nickname=devsum */ +/* extrainfo=0 */ +/* ===== */ +, +"108.53.208.157:80 orport=443 id=4F0DB7E687FC7C0AE55C8F243DA8B0EB27FBF1F2" +/* nickname=Binnacle */ +/* extrainfo=1 */ +/* ===== */ +, +"212.51.134.123:9030 orport=9001 id=50586E25BE067FD1F739998550EDDCB1A14CA5B2" +/* nickname=Jans */ +/* extrainfo=0 */ +/* ===== */ +, +"81.7.16.182:80 orport=443 id=51E1CF613FD6F9F11FE24743C91D6F9981807D82" +" ipv6=[2a02:180:1:1::517:10b6]:993" +/* nickname=torpidsDEisppro3 */ +/* extrainfo=0 */ +/* ===== */ +, +"85.25.159.65:995 orport=80 id=52BFADA8BEAA01BA46C8F767F83C18E2FE50C1B9" +/* nickname=BeastieJoy63 */ +/* extrainfo=0 */ +/* ===== */ +, +"95.130.12.119:80 orport=443 id=587E0A9552E4274B251F29B5B2673D38442EE4BF" +/* nickname=Nuath */ +/* extrainfo=0 */ +/* ===== */ +, +"185.21.100.50:9030 orport=9001 id=58ED9C9C35E433EE58764D62892B4FFD518A3CD0" +" ipv6=[2a00:1158:2:cd00:0:74:6f:72]:443" +/* nickname=SamAAdams2 */ +/* extrainfo=0 */ +/* ===== */ +, +"172.98.193.43:80 orport=443 id=5E56738E7F97AA81DEEF59AF28494293DFBFCCDF" +/* nickname=Backplane */ +/* extrainfo=0 */ +/* ===== */ +, +"199.249.223.74:80 orport=443 id=5F4CD12099AF20FAF9ADFDCEC65316A376D0201C" +/* nickname=QuintexAirVPN7 */ +/* extrainfo=0 */ +/* ===== */ +, +"95.128.43.164:80 orport=443 id=616081EC829593AF4232550DE6FFAA1D75B37A90" +" ipv6=[2a02:ec0:209:10::4]:443" +/* nickname=AquaRayTerminus */ +/* extrainfo=0 */ +/* ===== */ +, +"163.172.139.104:8080 orport=443 id=68F175CCABE727AA2D2309BCD8789499CEE36ED7" +/* nickname=Pichincha */ +/* extrainfo=0 */ +/* ===== */ +, +"85.214.62.48:80 orport=443 id=6A7551EEE18F78A9813096E82BF84F740D32B911" +/* nickname=TorMachine */ +/* extrainfo=0 */ +/* ===== */ +, +"80.127.137.19:80 orport=443 id=6EF897645B79B6CB35E853B32506375014DE3621" +" ipv6=[2001:981:47c1:1::6]:443" +/* nickname=d6relay */ +/* extrainfo=0 */ +/* ===== */ +, +"85.235.250.88:80 orport=443 id=72B2B12A3F60408BDBC98C6DF53988D3A0B3F0EE" +/* nickname=TykRelay01 */ +/* extrainfo=0 */ +/* ===== */ +, +"81.7.14.31:9001 orport=443 id=7600680249A22080ECC6173FBBF64D6FCF330A61" +/* nickname=Ichotolot62 */ +/* extrainfo=0 */ +/* ===== */ +, +"134.119.36.135:80 orport=443 id=763C9556602BD6207771A7A3D958091D44C43228" +" ipv6=[2a00:1158:3::2a8]:993" +/* nickname=torpidsDEdomainf2 */ +/* extrainfo=0 */ +/* ===== */ +, +"188.166.133.133:9030 orport=9001 id=774555642FDC1E1D4FDF2E0C31B7CA9501C5C9C7" +" ipv6=[2a03:b0c0:2:d0::26c0:1]:9001" +/* nickname=dropsy */ +/* extrainfo=0 */ +/* ===== */ +, +"5.196.23.64:9030 orport=9001 id=775B0FAFDE71AADC23FFC8782B7BEB1D5A92733E" +/* nickname=Aerodynamik01 */ +/* extrainfo=0 */ +/* ===== */ +, +"81.30.158.213:9030 orport=9001 id=789EA6C9AE9ADDD8760903171CFA9AC5741B0C70" +" ipv6=[2001:4ba0:cafe:e84::1]:9001" +/* nickname=dumpster */ +/* extrainfo=0 */ +/* ===== */ +, +"104.200.20.46:80 orport=9001 id=78E2BE744A53631B4AAB781468E94C52AB73968B" +/* nickname=bynumlawtor */ +/* extrainfo=0 */ +/* ===== */ +, +"62.210.129.246:80 orport=443 id=79E169B25E4C7CE99584F6ED06F379478F23E2B8" +/* nickname=MilesPrower */ +/* extrainfo=0 */ +/* ===== */ +, +"82.223.21.74:9030 orport=9001 id=7A32C9519D80CA458FC8B034A28F5F6815649A98" +" ipv6=[2001:470:53e0::cafe]:9050" +/* nickname=silentrocket */ +/* extrainfo=0 */ +/* ===== */ +, +"51.254.136.195:80 orport=443 id=7BB70F8585DFC27E75D692970C0EEB0F22983A63" +/* nickname=torproxy02 */ +/* extrainfo=0 */ +/* ===== */ +, +"77.247.181.162:80 orport=443 id=7BFB908A3AA5B491DA4CA72CCBEE0E1F2A939B55" +/* nickname=sofia */ +/* extrainfo=0 */ +/* ===== */ +, +"185.100.84.82:80 orport=443 id=7D05A38E39FC5D29AFE6BE487B9B4DC9E635D09E" +/* nickname=saveyourprivacyexit */ +/* extrainfo=0 */ +/* ===== */ +, +"199.249.223.69:80 orport=443 id=7FA8E7E44F1392A4E40FFC3B69DB3B00091B7FD3" +/* nickname=Quintex20 */ +/* extrainfo=0 */ +/* ===== */ +, +"193.11.114.45:9031 orport=9002 id=80AAF8D5956A43C197104CEF2550CD42D165C6FB" +/* nickname=mdfnet2 */ +/* extrainfo=0 */ +/* ===== */ +, +"62.210.254.132:80 orport=443 id=8456DFA94161CDD99E480C2A2992C366C6564410" +/* nickname=turingmachine */ +/* extrainfo=0 */ +/* ===== */ +, +"85.230.184.93:9030 orport=443 id=855BC2DABE24C861CD887DB9B2E950424B49FC34" +/* nickname=Logforme */ +/* extrainfo=0 */ +/* ===== */ +, +"72.52.75.27:9030 orport=9001 id=8567AD0A6369ED08527A8A8533A5162AC00F7678" +/* nickname=piecoopdotnet */ +/* extrainfo=0 */ +/* ===== */ +, +"185.96.88.29:80 orport=443 id=86C281AD135058238D7A337D546C902BE8505DDE" +/* nickname=TykRelay05 */ +/* extrainfo=0 */ +/* ===== */ +, +"176.10.104.243:80 orport=443 id=88487BDD980BF6E72092EE690E8C51C0AA4A538C" +/* nickname=DigiGesTor2e1 */ +/* extrainfo=0 */ +/* ===== */ +, +"163.172.194.53:9030 orport=9001 id=8C00FA7369A7A308F6A137600F0FA07990D9D451" +" ipv6=[2001:bc8:225f:142:6c69:7461:7669:73]:9001" +/* nickname=GrmmlLitavis */ +/* extrainfo=0 */ +/* ===== */ +, +"5.189.169.190:8030 orport=8080 id=8D79F73DCD91FC4F5017422FAC70074D6DB8DD81" +/* nickname=thanatosDE */ +/* extrainfo=0 */ +/* ===== */ +, +"151.80.42.103:9030 orport=9001 id=9007C1D8E4F03D506A4A011B907A9E8D04E3C605" +" ipv6=[2001:41d0:e:f67::114]:9001" +/* nickname=matlink */ +/* extrainfo=0 */ +/* ===== */ +, +"37.187.20.59:80 orport=443 id=91D23D8A539B83D2FB56AA67ECD4D75CC093AC55" +" ipv6=[2001:41d0:a:143b::1]:993" +/* nickname=torpidsFRovh */ +/* extrainfo=0 */ +/* ===== */ +, +"62.138.7.171:8030 orport=8001 id=9285B22F7953D7874604EEE2B470609AD81C74E9" +/* nickname=0x3d005 */ +/* extrainfo=0 */ +/* ===== */ +, +"178.16.208.57:80 orport=443 id=92CFD9565B24646CAC2D172D3DB503D69E777B8A" +" ipv6=[2a00:1c20:4089:1234:7825:2c5d:1ecd:c66f]:443" +/* nickname=bakunin */ +/* extrainfo=0 */ +/* ===== */ +, +"91.219.237.244:80 orport=443 id=92ECC9E0E2AF81BB954719B189AC362E254AD4A5" +/* nickname=lewwerDuarUesSlaav */ +/* extrainfo=0 */ +/* ===== */ +, +"37.153.1.10:9030 orport=9001 id=9772EFB535397C942C3AB8804FB35CFFAD012438" +/* nickname=smallsweatnode */ +/* extrainfo=0 */ +/* ===== */ +, +"163.172.223.200:80 orport=443 id=998BF3ED7F70E33D1C307247B9626D9E7573C438" +/* nickname=Outfall2 */ +/* extrainfo=0 */ +/* ===== */ +, +"91.229.20.27:9030 orport=9001 id=9A0D54D3A6D2E0767596BF1515E6162A75B3293F" +/* nickname=gordonkeybag */ +/* extrainfo=0 */ +/* ===== */ +, +"66.111.2.20:9030 orport=9001 id=9A68B85A02318F4E7E87F2828039FBD5D75B0142" +/* nickname=NYCBUG0 */ +/* extrainfo=0 */ +/* ===== */ +, +"185.100.86.128:9030 orport=9001 id=9B31F1F1C1554F9FFB3455911F82E818EF7C7883" +/* nickname=TorExitFinland */ +/* extrainfo=0 */ +/* ===== */ +, +"146.185.177.103:80 orport=9030 id=9EC5E097663862DF861A18C32B37C5F82284B27D" +/* nickname=Winter */ +/* extrainfo=0 */ +/* ===== */ +, +"199.249.223.64:80 orport=443 id=9F2856F6D2B89AD4EF6D5723FAB167DB5A53519A" +/* nickname=Quintex15 */ +/* extrainfo=0 */ +/* ===== */ +, +"46.28.110.244:80 orport=443 id=9F7D6E6420183C2B76D3CE99624EBC98A21A967E" +/* nickname=Nivrim */ +/* extrainfo=0 */ +/* ===== */ +, +"91.121.84.137:4952 orport=4052 id=9FBEB75E8BC142565F12CBBE078D63310236A334" +/* nickname=lindon */ +/* extrainfo=0 */ +/* ===== */ +, +"46.165.230.5:80 orport=443 id=A0F06C2FADF88D3A39AA3072B406F09D7095AC9E" +/* nickname=Dhalgren */ +/* extrainfo=1 */ +/* ===== */ +, +"171.25.193.77:80 orport=443 id=A10C4F666D27364036B562823E5830BC448E046A" +" ipv6=[2001:67c:289c:3::77]:443" +/* nickname=DFRI1 */ +/* extrainfo=0 */ +/* ===== */ +, +"81.7.3.67:993 orport=443 id=A2E6BB5C391CD46B38C55B4329C35304540771F1" +/* nickname=BeastieJoy62 */ +/* extrainfo=0 */ +/* ===== */ +, +"171.25.193.78:80 orport=443 id=A478E421F83194C114F41E94F95999672AED51FE" +" ipv6=[2001:67c:289c:3::78]:443" +/* nickname=DFRI4 */ +/* extrainfo=0 */ +/* ===== */ +, +"178.16.208.58:80 orport=443 id=A4C98CEA3F34E05299417E9F885A642C88EF6029" +" ipv6=[2a00:1c20:4089:1234:cdae:1b3e:cc38:3d45]:443" +/* nickname=jaures2 */ +/* extrainfo=0 */ +/* ===== */ +, +"163.172.149.122:80 orport=443 id=A9406A006D6E7B5DA30F2C6D4E42A338B5E340B2" +/* nickname=niij03 */ +/* extrainfo=0 */ +/* ===== */ +, +"195.154.164.243:80 orport=443 id=AC66FFA4AB35A59EBBF5BF4C70008BF24D8A7A5C" +/* nickname=torpidsFRonline3 */ +/* extrainfo=0 */ +/* ===== */ +, +"86.59.119.88:80 orport=443 id=ACD889D86E02EDDAB1AFD81F598C0936238DC6D0" +/* nickname=ph3x */ +/* extrainfo=0 */ +/* ===== */ +, +"185.129.62.62:9030 orport=9001 id=ACDD9E85A05B127BA010466C13C8C47212E8A38F" +" ipv6=[2a06:d380:0:3700::62]:9001" +/* nickname=kramse */ +/* extrainfo=0 */ +/* ===== */ +, +"188.40.128.246:9030 orport=9001 id=AD19490C7DBB26D3A68EFC824F67E69B0A96E601" +" ipv6=[2a01:4f8:221:1ac1:dead:beef:7005:9001]:9001" +/* nickname=sputnik */ +/* extrainfo=0 */ +/* ===== */ +, +"176.126.252.11:443 orport=9001 id=B0279A521375F3CB2AE210BDBFC645FDD2E1973A" +" ipv6=[2a02:59e0:0:7::11]:9003" +/* nickname=chulak */ +/* extrainfo=1 */ +/* ===== */ +, +"5.9.147.226:9030 orport=9001 id=B0553175AADB0501E5A61FC61CEA3970BE130FF2" +" ipv6=[2a01:4f8:190:30e1::2]:9001" +/* nickname=zwiubel */ +/* extrainfo=0 */ +/* ===== */ +, +"178.17.174.14:9030 orport=9001 id=B06F093A3D4DFAD3E923F4F28A74901BD4F74EB1" +/* nickname=TorExitMoldova */ +/* extrainfo=0 */ +/* ===== */ +, +"199.249.223.40:80 orport=443 id=B0CD9F9B5B60651ADC5919C0F1EAA87DBA1D9249" +/* nickname=Quintex31 */ +/* extrainfo=0 */ +/* ===== */ +, +"212.129.62.232:80 orport=443 id=B143D439B72D239A419F8DCE07B8A8EB1B486FA7" +/* nickname=wardsback */ +/* extrainfo=0 */ +/* ===== */ +, +"136.243.214.137:80 orport=443 id=B291D30517D23299AD7CEE3E60DFE60D0E3A4664" +/* nickname=TorKIT */ +/* extrainfo=0 */ +/* ===== */ +, +"212.47.233.86:9030 orport=9001 id=B4CAFD9CBFB34EC5DAAC146920DC7DFAFE91EA20" +/* nickname=netimanmu */ +/* extrainfo=0 */ +/* ===== */ +, +"93.115.97.242:9030 orport=9001 id=B5212DB685A2A0FCFBAE425738E478D12361710D" +/* nickname=firstor */ +/* extrainfo=0 */ +/* ===== */ +, +"81.2.209.10:443 orport=80 id=B6904ADD4C0D10CDA7179E051962350A69A63243" +" ipv6=[2001:15e8:201:1::d10a]:80" +/* nickname=torzabehlice */ +/* extrainfo=0 */ +/* ===== */ +, +"193.11.114.46:9032 orport=9003 id=B83DC1558F0D34353BB992EF93AFEAFDB226A73E" +/* nickname=mdfnet3 */ +/* extrainfo=0 */ +/* ===== */ +, +"81.7.11.186:1080 orport=443 id=B86137AE9681701901C6720E55C16805B46BD8E3" +/* nickname=BeastieJoy60 */ +/* extrainfo=0 */ +/* ===== */ +, +"197.231.221.211:9030 orport=443 id=BC630CBBB518BE7E9F4E09712AB0269E9DC7D626" +/* nickname=IPredator */ +/* extrainfo=0 */ +/* ===== */ +, +"198.96.155.3:8080 orport=5001 id=BCEDF6C193AA687AE471B8A22EBF6BC57C2D285E" +/* nickname=gurgle */ +/* extrainfo=0 */ +/* ===== */ +, +"128.199.55.207:9030 orport=9001 id=BCEF908195805E03E92CCFE669C48738E556B9C5" +" ipv6=[2a03:b0c0:2:d0::158:3001]:9001" +/* nickname=EldritchReaper */ +/* extrainfo=0 */ +/* ===== */ +, +"213.141.138.174:9030 orport=9001 id=BD552C165E2ED2887D3F1CCE9CFF155DDA2D86E6" +/* nickname=Schakalium */ +/* extrainfo=0 */ +/* ===== */ +, +"104.192.5.248:9030 orport=9001 id=BF735F669481EE1CCC348F0731551C933D1E2278" +/* nickname=Freeway11 */ +/* extrainfo=0 */ +/* ===== */ +, +"31.185.104.21:80 orport=443 id=C2AAB088555850FC434E68943F551072042B85F1" +/* nickname=Digitalcourage3ip3 */ +/* extrainfo=0 */ +/* ===== */ +, +"213.239.217.18:1338 orport=1337 id=C37BC191AC389179674578C3E6944E925FE186C2" +" ipv6=[2a01:4f8:a0:746a:101:1:1:1]:1337" +/* nickname=xzdsb */ +/* extrainfo=0 */ +/* ===== */ +, +"188.138.112.60:1433 orport=1521 id=C414F28FD2BEC1553024299B31D4E726BEB8E788" +/* nickname=zebra620 */ +/* extrainfo=0 */ +/* ===== */ +, +"199.249.223.66:80 orport=443 id=C5A53BCC174EF8FD0DCB223E4AA929FA557DEDB2" +/* nickname=Quintex17 */ +/* extrainfo=0 */ +/* ===== */ +, +"85.25.213.211:465 orport=80 id=CE47F0356D86CF0A1A2008D97623216D560FB0A8" +/* nickname=BeastieJoy61 */ +/* extrainfo=0 */ +/* ===== */ +, +"51.15.13.245:9030 orport=9001 id=CED527EAC230E7B56E5B363F839671829C3BA01B" +/* nickname=0x3d006 */ +/* extrainfo=0 */ +/* ===== */ +, +"46.38.237.221:9030 orport=9001 id=D30E9D4D639068611D6D96861C95C2099140B805" +/* nickname=mine */ +/* extrainfo=0 */ +/* ===== */ +, +"31.171.155.108:9030 orport=9001 id=D3E5EDDBE5159388704D6785BE51930AAFACEC6F" +/* nickname=TorNodeAlbania */ +/* extrainfo=0 */ +/* ===== */ +, +"37.221.162.226:9030 orport=9001 id=D64366987CB39F61AD21DBCF8142FA0577B92811" +/* nickname=kasperskytor01 */ +/* extrainfo=0 */ +/* ===== */ +, +"46.101.169.151:9030 orport=9001 id=D760C5B436E42F93D77EF2D969157EEA14F9B39C" +" ipv6=[2a03:b0c0:3:d0::74f:a001]:9001" +/* nickname=DanWin1210 */ +/* extrainfo=0 */ +/* ===== */ +, +"85.10.201.47:9030 orport=9001 id=D8B7A3A6542AA54D0946B9DC0257C53B6C376679" +" ipv6=[2a01:4f8:a0:43eb::beef]:9001" +/* nickname=sif */ +/* extrainfo=0 */ +/* ===== */ +, +"193.35.52.53:9030 orport=9001 id=DAA39FC00B196B353C2A271459C305C429AF09E4" +/* nickname=Arne */ +/* extrainfo=0 */ +/* ===== */ +, +"178.33.183.251:80 orport=443 id=DD823AFB415380A802DCAEB9461AE637604107FB" +" ipv6=[2001:41d0:2:a683::251]:443" +/* nickname=grenouille */ +/* extrainfo=0 */ +/* ===== */ +, +"171.25.193.20:80 orport=443 id=DD8BD7307017407FCC36F8D04A688F74A0774C02" +" ipv6=[2001:67c:289c::20]:443" +/* nickname=DFRI0 */ +/* extrainfo=0 */ +/* ===== */ +, +"92.222.38.67:80 orport=443 id=DED6892FF89DBD737BA689698A171B2392EB3E82" +/* nickname=ThorExit */ +/* extrainfo=0 */ +/* ===== */ +, +"166.70.207.2:9030 orport=9001 id=E3DB2E354B883B59E8DC56B3E7A353DDFD457812" +/* nickname=xmission */ +/* extrainfo=0 */ +/* ===== */ +, +"199.249.223.43:80 orport=443 id=E480D577F58E782A5BC4FA6F49A6650E9389302F" +/* nickname=Quintex34 */ +/* extrainfo=0 */ +/* ===== */ +, +"46.252.26.2:45212 orport=49991 id=E589316576A399C511A9781A73DA4545640B479D" +/* nickname=marlen */ +/* extrainfo=0 */ +/* ===== */ +, +"176.31.180.157:143 orport=22 id=E781F4EC69671B3F1864AE2753E0890351506329" +" ipv6=[2001:41d0:8:eb9d::1]:22" +/* nickname=armbrust */ +/* extrainfo=0 */ +/* ===== */ +, +"212.47.244.38:8080 orport=443 id=E81EF60A73B3809F8964F73766B01BAA0A171E20" +/* nickname=Chimborazo */ +/* extrainfo=0 */ +/* ===== */ +, +"217.182.75.181:9030 orport=9001 id=EFEACD781604EB80FBC025EDEDEA2D523AEAAA2F" +/* nickname=Aerodynamik02 */ +/* extrainfo=0 */ +/* ===== */ +, +"37.187.102.108:80 orport=443 id=F4263275CF54A6836EE7BD527B1328836A6F06E1" +" ipv6=[2001:41d0:a:266c::1]:443" +/* nickname=EvilMoe */ +/* extrainfo=0 */ +/* ===== */ +, +"46.28.109.231:9030 orport=9001 id=F70B7C5CD72D74C7F9F2DC84FA9D20D51BA13610" +" ipv6=[2a02:2b88:2:1::4205:1]:9001" +/* nickname=wedostor */ +/* extrainfo=0 */ +/* ===== */ +, +"185.96.180.29:80 orport=443 id=F93D8F37E35C390BCAD9F9069E13085B745EC216" +/* nickname=TykRelay06 */ +/* extrainfo=0 */ +/* ===== */ +, +"86.59.119.83:80 orport=443 id=FC9AC8EA0160D88BCCFDE066940D7DD9FA45495B" +/* nickname=ph3x */ +/* extrainfo=0 */ +/* ===== */ +, +"149.56.45.200:9030 orport=9001 id=FE296180018833AF03A8EACD5894A614623D3F76" +" ipv6=[2607:5300:201:3000::17d3]:9002" +/* nickname=PiotrTorpotkinOne */ +/* extrainfo=0 */ +/* ===== */ +, diff --git a/src/app/config/or_options_st.h b/src/app/config/or_options_st.h new file mode 100644 index 0000000000..0c0c5d32bb --- /dev/null +++ b/src/app/config/or_options_st.h @@ -0,0 +1,1077 @@ +/* Copyright (c) 2001 Matej Pfajfar. + * Copyright (c) 2001-2004, Roger Dingledine. + * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson. + * Copyright (c) 2007-2018, The Tor Project, Inc. */ +/* See LICENSE for licensing information */ + +#ifndef TOR_OR_OPTIONS_ST_H +#define TOR_OR_OPTIONS_ST_H + +#include "lib/cc/torint.h" +#include "lib/net/address.h" + +struct smartlist_t; +struct config_line_t; + +/** Enumeration of outbound address configuration types: + * Exit-only, OR-only, or both */ +typedef enum {OUTBOUND_ADDR_EXIT, OUTBOUND_ADDR_OR, + OUTBOUND_ADDR_EXIT_AND_OR, + OUTBOUND_ADDR_MAX} outbound_addr_t; + +/** Configuration options for a Tor process. */ +struct or_options_t { + uint32_t magic_; + + /** What should the tor process actually do? */ + enum { + CMD_RUN_TOR=0, CMD_LIST_FINGERPRINT, CMD_HASH_PASSWORD, + CMD_VERIFY_CONFIG, CMD_RUN_UNITTESTS, CMD_DUMP_CONFIG, + CMD_KEYGEN, + CMD_KEY_EXPIRATION, + } command; + char *command_arg; /**< Argument for command-line option. */ + + struct config_line_t *Logs; /**< New-style list of configuration lines + * for logs */ + int LogTimeGranularity; /**< Log resolution in milliseconds. */ + + int LogMessageDomains; /**< Boolean: Should we log the domain(s) in which + * each log message occurs? */ + int TruncateLogFile; /**< Boolean: Should we truncate the log file + before we start writing? */ + char *SyslogIdentityTag; /**< Identity tag to add for syslog logging. */ + char *AndroidIdentityTag; /**< Identity tag to add for Android logging. */ + + char *DebugLogFile; /**< Where to send verbose log messages. */ + char *DataDirectory_option; /**< Where to store long-term data, as + * configured by the user. */ + char *DataDirectory; /**< Where to store long-term data, as modified. */ + int DataDirectoryGroupReadable; /**< Boolean: Is the DataDirectory g+r? */ + + char *KeyDirectory_option; /**< Where to store keys, as + * configured by the user. */ + char *KeyDirectory; /**< Where to store keys data, as modified. */ + int KeyDirectoryGroupReadable; /**< Boolean: Is the KeyDirectory g+r? */ + + char *CacheDirectory_option; /**< Where to store cached data, as + * configured by the user. */ + char *CacheDirectory; /**< Where to store cached data, as modified. */ + int CacheDirectoryGroupReadable; /**< Boolean: Is the CacheDirectory g+r? */ + + char *Nickname; /**< OR only: nickname of this onion router. */ + char *Address; /**< OR only: configured address for this onion router. */ + char *PidFile; /**< Where to store PID of Tor process. */ + + routerset_t *ExitNodes; /**< Structure containing nicknames, digests, + * country codes and IP address patterns of ORs to + * consider as exits. */ + routerset_t *EntryNodes;/**< Structure containing nicknames, digests, + * country codes and IP address patterns of ORs to + * consider as entry points. */ + int StrictNodes; /**< Boolean: When none of our EntryNodes or ExitNodes + * are up, or we need to access a node in ExcludeNodes, + * do we just fail instead? */ + routerset_t *ExcludeNodes;/**< Structure containing nicknames, digests, + * country codes and IP address patterns of ORs + * not to use in circuits. But see StrictNodes + * above. */ + routerset_t *ExcludeExitNodes;/**< Structure containing nicknames, digests, + * country codes and IP address patterns of + * ORs not to consider as exits. */ + + /** Union of ExcludeNodes and ExcludeExitNodes */ + routerset_t *ExcludeExitNodesUnion_; + + int DisableAllSwap; /**< Boolean: Attempt to call mlockall() on our + * process for all current and future memory. */ + + struct config_line_t *ExitPolicy; /**< Lists of exit policy components. */ + int ExitPolicyRejectPrivate; /**< Should we not exit to reserved private + * addresses, and our own published addresses? + */ + int ExitPolicyRejectLocalInterfaces; /**< Should we not exit to local + * interface addresses? + * Includes OutboundBindAddresses and + * configured ports. */ + int ReducedExitPolicy; /**