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path: root/src/or/dns.c
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2014-04-08Merge remote-tracking branch 'origin/maint-0.2.4'Nick Mathewson
2014-04-07Fix a small memory leak when resolving PTR addressesNick Mathewson
Fixes bug 11437; bugfix on 0.2.4.7-alpha. Found by coverity; this is CID 1198198.
2014-02-12Siphash-2-4 is now our hash in nearly all cases.Nick Mathewson
I've made an exception for cases where I'm sure that users can't influence the inputs. This is likely to cause a slowdown somewhere, but it's safer to siphash everything and *then* look for cases to optimize. This patch doesn't actually get us any _benefit_ from siphash yet, since we don't really randomize the key at any point.
2013-09-19Fix compilation with libevent 1Nick Mathewson
a9910d89 added trickery to make us work with interned strings and seccomp; it requires libevent 2. Fix for 9785; bug not in any released tor.
2013-09-13Merge remote-tracking branch 'ctoader/gsoc-cap-stage2'Nick Mathewson
Conflicts: src/common/sandbox.c
2013-08-19finalised fix on libevent open string issueCristian Toader
2013-08-12attempt to add stat64 filename filters; failed due to getaddrinfo..Cristian Toader
2013-07-26Avoid assertion failure on unexepcted address family in DNS reply.Nick Mathewson
Fixes bug 9337; bugfix on 0.2.4.7-alpha.
2013-02-01Rename log() to tor_log() for loggingNick Mathewson
This is meant to avoid conflict with the built-in log() function in math.h. It resolves ticket 7599. First reported by dhill. This was generated with the following perl script: #!/usr/bin/perl -w -i -p s/\blog\(LOG_(ERR|WARN|NOTICE|INFO|DEBUG)\s*,\s*/log_\L$1\(/g; s/\blog\(/tor_log\(/g;
2013-01-16Aftermath of isin->contains renamingNick Mathewson
Fix wide lines and comments, and add a changes file
2013-01-16Rename *_isin to *_containsNick Mathewson
This is an automatically generated commit, from the following perl script, run with the options "-w -i -p". s/smartlist_string_num_isin/smartlist_contains_int_as_string/g; s/smartlist_string_isin((?:_case)?)/smartlist_contains_string$1/g; s/smartlist_digest_isin/smartlist_contains_digest/g; s/smartlist_isin/smartlist_contains/g; s/digestset_isin/digestset_contains/g;
2013-01-16Update the copyright date to 201.Nick Mathewson
2012-12-07Fix some wide linesNick Mathewson
2012-12-07Merge branch 'win64-7260'Nick Mathewson
Conflicts: src/or/dns.c
2012-11-15Remove some XXXX commens in dns.cNick Mathewson
Previously, I was freaking out about passing an unspec address to dns_found_answer() on an error, since I was using the address type to determine whether the error was an error on an ipv4 address lookup or on an ipv6 address lookup. But now dns_found_answer() has a separate orig_query_type argument to tell what kind of query it is, so there's no need to freak out.
2012-11-14Make DNS resolve requests work for IPv6Nick Mathewson
* If there's an IPv4 and an IPv6 address, return both in the resolved cell. * Treat all resolve requests as permitting IPv6, since by the spec they're allowed to, and by the code that won't break anything.
2012-11-14Fix a bug in policy_is_reject_star() that was making IPv4 exits breakNick Mathewson
IPv4-only exits have an implicit "reject [::]/0", which was making policy_is_reject_star() return 1 for them, making us refuse to do hostname lookups. This fix chanes policy_is_reject_star() to ask about which family we meant.
2012-11-14Add some missing doxygen for ipv6 exit codeNick Mathewson
2012-11-14Remove some unused defines in dns.cNick Mathewson
2012-11-14Repair DNS NEXIST hijacking workaroundNick Mathewson
The code previously detected wildcarding and replaced wildcarded answers with DNS_STATUS_FAILED_PERMANENT. But that status variable was no longer used! Remove the status variable, and instead change the value of 'result' in evdns_callback. Thank goodness for compiler warnings. In this case, unused-but-set-variable. Thanks to Linus for finding this one.
2012-11-14Define a wrapper for evdns_base_resolve_ipv6 for systems w/o libevent 2Nick Mathewson
2012-11-14Make address_is_invalid_destination recognize ipv6 addrs as valid.Nick Mathewson
2012-11-14Revise the DNS subsystem to handle IPv6 exits.Nick Mathewson
Now, every cached_resolve_t can remember an IPv4 result *and* an IPv6 result. As a light protection against timing-based distinguishers for IPv6 users (and against complexity!), every forward request generates an IPv4 *and* an IPv6 request, assuming that we're an IPv6 exit. Once we have answers or errors for both, we act accordingly. This patch additionally makes some useful refactorings in the dns.c code, though there is quite a bit more of useful refactoring that could be done. Additionally, have a new interface for the argument passed to the evdns_callback function. Previously, it was just the original address we were resolving. But it turns out that, on error, evdns doesn't tell you the type of the query, so on a failure we didn't know whether IPv4 or IPv6 queries were failing. The new convention is to have the first byte of that argument include the query type. I've refactored the code a bit to make that simpler.
2012-11-14Reindent a block in dns.cNick Mathewson
2012-11-14Make DNS callback pass IPv6 answers to dns_answer_foundNick Mathewson
Also, count ipv6 timeouts vs others. If we have too many ipv6 requests time out, then we could be degrading performance because of a broken DNS server that ignores AAAA requests. Other cases in which we never learn an AAAA address aren't so bad, since they don't slow A (ipv4) answers down very much.
2012-11-14Make dns wildcarding checks work for ipv6Nick Mathewson
2012-11-14Simplest version of server-side IPv6 support (no dns)Nick Mathewson
This is a relatively simple set of changes: we mostly need to remove a few "but not for IPv6" changes. We also needed to tweak the handling of DNS code to generate RESOLVED cells that could get an IPv6 answer in return.
2012-11-02Add a TOR_SOCKET_T_FORMAT construction for logging sockets.Nick Mathewson
We need this since win64 has a 64-bit SOCKET type. Based on a patch from yayooo for 7260, forward-ported to 0.2.4.
2012-10-12Rename all reserved C identifiers we definedNick Mathewson
For everything we declare that starts with _, make it end with _ instead. This is a machine-generated patch. To make it, start by getting the list of reserved identifiers using: git ls-tree -r --name-only HEAD | grep '\.[ch]$' | \ xargs ctags --c-kinds=defglmpstuvx -o - | grep '^_' | \ cut -f 1 | sort| uniq You might need gnu ctags. Then pipe the output through this script: ============================== use strict; BEGIN { print "#!/usr/bin/perl -w -i -p\n\n"; } chomp; next if ( /^__attribute__/ or /^__func__/ or /^_FILE_OFFSET_BITS/ or /^_FORTIFY_SOURCE/ or /^_GNU_SOURCE/ or /^_WIN32/ or /^_DARWIN_UNLIMITED/ or /^_FILE_OFFSET_BITS/ or /^_LARGEFILE64_SOURCE/ or /^_LFS64_LARGEFILE/ or /^__cdecl/ or /^__attribute__/ or /^__func__/ or /^_WIN32_WINNT/); my $ident = $_; my $better = $ident; $better =~ s/^_//; $better = "${better}_"; print "s/(?<![A-Za-z0-9_])$ident(?![A-Za-z0-9_])/$better/g;\n"; ============================== Then run the resulting script on all the files you want to change. (That is, all the C except that in src/ext.) The resulting script was: ============================== s/(?<![A-Za-z0-9_])_address(?![A-Za-z0-9_])/address_/g; s/(?<![A-Za-z0-9_])_aes_fill_buf(?![A-Za-z0-9_])/aes_fill_buf_/g; s/(?<![A-Za-z0-9_])_AllowInvalid(?![A-Za-z0-9_])/AllowInvalid_/g; s/(?<![A-Za-z0-9_])_AP_CONN_STATE_MAX(?![A-Za-z0-9_])/AP_CONN_STATE_MAX_/g; s/(?<![A-Za-z0-9_])_AP_CONN_STATE_MIN(?![A-Za-z0-9_])/AP_CONN_STATE_MIN_/g; s/(?<![A-Za-z0-9_])_assert_cache_ok(?![A-Za-z0-9_])/assert_cache_ok_/g; s/(?<![A-Za-z0-9_])_A_UNKNOWN(?![A-Za-z0-9_])/A_UNKNOWN_/g; s/(?<![A-Za-z0-9_])_base(?![A-Za-z0-9_])/base_/g; s/(?<![A-Za-z0-9_])_BridgePassword_AuthDigest(?![A-Za-z0-9_])/BridgePassword_AuthDigest_/g; s/(?<![A-Za-z0-9_])_buffer_stats_compare_entries(?![A-Za-z0-9_])/buffer_stats_compare_entries_/g; s/(?<![A-Za-z0-9_])_chan_circid_entries_eq(?![A-Za-z0-9_])/chan_circid_entries_eq_/g; s/(?<![A-Za-z0-9_])_chan_circid_entry_hash(?![A-Za-z0-9_])/chan_circid_entry_hash_/g; s/(?<![A-Za-z0-9_])_check_no_tls_errors(?![A-Za-z0-9_])/check_no_tls_errors_/g; 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s/(?<![A-Za-z0-9_])_compare_strings_for_pqueue(?![A-Za-z0-9_])/compare_strings_for_pqueue_/g; s/(?<![A-Za-z0-9_])_compare_strs(?![A-Za-z0-9_])/compare_strs_/g; s/(?<![A-Za-z0-9_])_compare_tor_version_str_ptr(?![A-Za-z0-9_])/compare_tor_version_str_ptr_/g; s/(?<![A-Za-z0-9_])_compare_vote_rs(?![A-Za-z0-9_])/compare_vote_rs_/g; s/(?<![A-Za-z0-9_])_compare_votes_by_authority_id(?![A-Za-z0-9_])/compare_votes_by_authority_id_/g; s/(?<![A-Za-z0-9_])_compare_without_first_ch(?![A-Za-z0-9_])/compare_without_first_ch_/g; s/(?<![A-Za-z0-9_])_connection_free(?![A-Za-z0-9_])/connection_free_/g; s/(?<![A-Za-z0-9_])_connection_mark_and_flush(?![A-Za-z0-9_])/connection_mark_and_flush_/g; s/(?<![A-Za-z0-9_])_connection_mark_for_close(?![A-Za-z0-9_])/connection_mark_for_close_/g; s/(?<![A-Za-z0-9_])_connection_mark_unattached_ap(?![A-Za-z0-9_])/connection_mark_unattached_ap_/g; s/(?<![A-Za-z0-9_])_connection_write_to_buf_impl(?![A-Za-z0-9_])/connection_write_to_buf_impl_/g; s/(?<![A-Za-z0-9_])_ConnLimit(?![A-Za-z0-9_])/ConnLimit_/g; s/(?<![A-Za-z0-9_])_CONN_TYPE_MAX(?![A-Za-z0-9_])/CONN_TYPE_MAX_/g; s/(?<![A-Za-z0-9_])_CONN_TYPE_MIN(?![A-Za-z0-9_])/CONN_TYPE_MIN_/g; s/(?<![A-Za-z0-9_])_CONTROL_CONN_STATE_MAX(?![A-Za-z0-9_])/CONTROL_CONN_STATE_MAX_/g; s/(?<![A-Za-z0-9_])_CONTROL_CONN_STATE_MIN(?![A-Za-z0-9_])/CONTROL_CONN_STATE_MIN_/g; s/(?<![A-Za-z0-9_])_CPUWORKER_STATE_MAX(?![A-Za-z0-9_])/CPUWORKER_STATE_MAX_/g; s/(?<![A-Za-z0-9_])_CPUWORKER_STATE_MIN(?![A-Za-z0-9_])/CPUWORKER_STATE_MIN_/g; s/(?<![A-Za-z0-9_])_crypto_dh_get_dh(?![A-Za-z0-9_])/crypto_dh_get_dh_/g; s/(?<![A-Za-z0-9_])_crypto_global_initialized(?![A-Za-z0-9_])/crypto_global_initialized_/g; s/(?<![A-Za-z0-9_])_crypto_new_pk_from_rsa(?![A-Za-z0-9_])/crypto_new_pk_from_rsa_/g; s/(?<![A-Za-z0-9_])_crypto_pk_get_evp_pkey(?![A-Za-z0-9_])/crypto_pk_get_evp_pkey_/g; s/(?<![A-Za-z0-9_])_crypto_pk_get_rsa(?![A-Za-z0-9_])/crypto_pk_get_rsa_/g; s/(?<![A-Za-z0-9_])_DIR_CONN_STATE_MAX(?![A-Za-z0-9_])/DIR_CONN_STATE_MAX_/g; s/(?<![A-Za-z0-9_])_DIR_CONN_STATE_MIN(?![A-Za-z0-9_])/DIR_CONN_STATE_MIN_/g; s/(?<![A-Za-z0-9_])_DIR_PURPOSE_MAX(?![A-Za-z0-9_])/DIR_PURPOSE_MAX_/g; s/(?<![A-Za-z0-9_])_DIR_PURPOSE_MIN(?![A-Za-z0-9_])/DIR_PURPOSE_MIN_/g; s/(?<![A-Za-z0-9_])_dirreq_map_get(?![A-Za-z0-9_])/dirreq_map_get_/g; s/(?<![A-Za-z0-9_])_dirreq_map_put(?![A-Za-z0-9_])/dirreq_map_put_/g; s/(?<![A-Za-z0-9_])_dns_randfn(?![A-Za-z0-9_])/dns_randfn_/g; s/(?<![A-Za-z0-9_])_dummy(?![A-Za-z0-9_])/dummy_/g; s/(?<![A-Za-z0-9_])_edge(?![A-Za-z0-9_])/edge_/g; s/(?<![A-Za-z0-9_])_END_CIRC_REASON_MAX(?![A-Za-z0-9_])/END_CIRC_REASON_MAX_/g; s/(?<![A-Za-z0-9_])_END_CIRC_REASON_MIN(?![A-Za-z0-9_])/END_CIRC_REASON_MIN_/g; s/(?<![A-Za-z0-9_])_EOF(?![A-Za-z0-9_])/EOF_/g; s/(?<![A-Za-z0-9_])_ERR(?![A-Za-z0-9_])/ERR_/g; s/(?<![A-Za-z0-9_])_escaped_val(?![A-Za-z0-9_])/escaped_val_/g; s/(?<![A-Za-z0-9_])_evdns_log(?![A-Za-z0-9_])/evdns_log_/g; s/(?<![A-Za-z0-9_])_evdns_nameserver_add_impl(?![A-Za-z0-9_])/evdns_nameserver_add_impl_/g; s/(?<![A-Za-z0-9_])_EVENT_MAX(?![A-Za-z0-9_])/EVENT_MAX_/g; s/(?<![A-Za-z0-9_])_EVENT_MIN(?![A-Za-z0-9_])/EVENT_MIN_/g; s/(?<![A-Za-z0-9_])_ExcludeExitNodesUnion(?![A-Za-z0-9_])/ExcludeExitNodesUnion_/g; s/(?<![A-Za-z0-9_])_EXIT_CONN_STATE_MAX(?![A-Za-z0-9_])/EXIT_CONN_STATE_MAX_/g; s/(?<![A-Za-z0-9_])_EXIT_CONN_STATE_MIN(?![A-Za-z0-9_])/EXIT_CONN_STATE_MIN_/g; s/(?<![A-Za-z0-9_])_EXIT_PURPOSE_MAX(?![A-Za-z0-9_])/EXIT_PURPOSE_MAX_/g; s/(?<![A-Za-z0-9_])_EXIT_PURPOSE_MIN(?![A-Za-z0-9_])/EXIT_PURPOSE_MIN_/g; s/(?<![A-Za-z0-9_])_extrainfo_free(?![A-Za-z0-9_])/extrainfo_free_/g; s/(?<![A-Za-z0-9_])_find_by_keyword(?![A-Za-z0-9_])/find_by_keyword_/g; s/(?<![A-Za-z0-9_])_free_cached_dir(?![A-Za-z0-9_])/free_cached_dir_/g; s/(?<![A-Za-z0-9_])_free_cached_resolve(?![A-Za-z0-9_])/free_cached_resolve_/g; s/(?<![A-Za-z0-9_])_free_duplicate_routerstatus_entry(?![A-Za-z0-9_])/free_duplicate_routerstatus_entry_/g; s/(?<![A-Za-z0-9_])_free_link_history(?![A-Za-z0-9_])/free_link_history_/g; s/(?<![A-Za-z0-9_])_geoip_compare_entries(?![A-Za-z0-9_])/geoip_compare_entries_/g; s/(?<![A-Za-z0-9_])_geoip_compare_key_to_entry(?![A-Za-z0-9_])/geoip_compare_key_to_entry_/g; 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2012-10-02reformat; no actual changesRoger Dingledine
2012-10-02and make the last commit compileRoger Dingledine
2012-10-02Fix compilation error left over from 1cbf45bed1. (Bug 7021)Nick Mathewson
2012-08-17When iterating over connections pending DNS, skip marked onesNick Mathewson
Failure to do this would lead to double-free cases and similar, especially when the exit's DNS was broken. See bug 6472 for full details; this is a fix for 6472. Anonymous patch from "cypherpunks" on trac.
2012-07-31Avoid hard (impossible?)-to-trigger double-free in dns_resolve()Nick Mathewson
Fixes 6480; fix on 0.2.0.1-alpha; based on pseudonymous patch.
2012-07-31trivial grammar fixRoger Dingledine
2012-06-07Downgrade an eventdns warning to PROTOCOL_WARN.Nick Mathewson
2012-06-04Update copyright dates to 2012; add a few missing copyright statementsNick Mathewson
2012-05-18Fix a hard-to-trigger memory leak in launch_resolveNick Mathewson
To hit this leak, you need to be a relay that gets a RESOLVE request or an exit node getting a BEGIN or RESOLVE request. You must either have unconfigured (and unconfigurable) nameservers, or you must have somehow set DisableNetwork after a network request arrived but before you managed to process it. So, I doubt this is reached often. Still, a leak's a leak. Fix for bug 5916; bugfix on 0.2.3.9-alpha and 0.1.2.1-alpha.
2012-01-31Use the standard _WIN32, not the Torism MS_WINDOWS or deprecated WIN32Nick Mathewson
This commit is completely mechanical; I used this perl script to make it: #!/usr/bin/perl -w -i.bak -p if (/^\s*\#/) { s/MS_WINDOWS/_WIN32/g; s/\bWIN32\b/_WIN32/g; }
2012-01-23Use !SOCKET_OK to test if a socket is uninitializedtor-0.2.3.11-alphaSebastian Hahn
This fixes a compile warning on Windows. Fixes bug 4946, not in any released version.
2012-01-18Rename nonconformant identifiers.Nick Mathewson
Fixes bug 4893. These changes are pure mechanical, and were generated with this perl script: /usr/bin/perl -w -i.bak -p s/crypto_pk_env_t/crypto_pk_t/g; s/crypto_dh_env_t/crypto_dh_t/g; s/crypto_cipher_env_t/crypto_cipher_t/g; s/crypto_digest_env_t/crypto_digest_t/g; s/aes_free_cipher/aes_cipher_free/g; s/crypto_free_cipher_env/crypto_cipher_free/g; s/crypto_free_digest_env/crypto_digest_free/g; s/crypto_free_pk_env/crypto_pk_free/g; s/_crypto_dh_env_get_dh/_crypto_dh_get_dh/g; s/_crypto_new_pk_env_rsa/_crypto_new_pk_from_rsa/g; s/_crypto_pk_env_get_evp_pkey/_crypto_pk_get_evp_pkey/g; s/_crypto_pk_env_get_rsa/_crypto_pk_get_rsa/g; s/crypto_new_cipher_env/crypto_cipher_new/g; s/crypto_new_digest_env/crypto_digest_new/g; s/crypto_new_digest256_env/crypto_digest256_new/g; s/crypto_new_pk_env/crypto_pk_new/g; s/crypto_create_crypto_env/crypto_cipher_new/g; s/connection_create_listener/connection_listener_new/g; s/smartlist_create/smartlist_new/g; s/transport_create/transport_new/g;
2012-01-17Use SOCKET_OK macros in even more placesNick Mathewson
Add a TOR_INVALID_SOCKET macro to wrap -1/INVALID_SOCKET. Partial work for bug4533.
2011-11-29Make sure we never launch an evdns resolve when DisableNetwork is 1Nick Mathewson
2011-10-11Change "reverse_lookup_name" functions to refer to "PTR_name"sNick Mathewson
Under the new convention, having a tor_addr.*lookup function that doesn't do hostname resolution is too close for comfort. I used this script here, and have made no other changes. s/tor_addr_parse_reverse_lookup_name/tor_addr_parse_PTR_name/g; s/tor_addr_to_reverse_lookup_name/tor_addr_to_PTR_name/g;
2011-10-11Fix names of functions that convert strings to addrsNick Mathewson
Now let's have "lookup" indicate that there can be a hostname resolution, and "parse" indicate that there wasn't. Previously, we had one "lookup" function that did resolution; four "parse" functions, half of which did resolution; and a "from_str()" function that didn't do resolution. That's confusing and error-prone! The code changes in this commit are exactly the result of this perl script, run under "perl -p -i.bak" : s/tor_addr_port_parse/tor_addr_port_lookup/g; s/parse_addr_port(?=[^_])/addr_port_lookup/g; s/tor_addr_from_str/tor_addr_parse/g; This patch leaves aton and pton alone: their naming convention and behavior is is determined by the sockets API. More renaming may be needed.
2011-06-14Make the get_options() return constNick Mathewson
This lets us make a lot of other stuff const, allows the compiler to generate (slightly) better code, and will make me get slightly fewer patches from folks who stick mutable stuff into or_options_t. const: because not every input is an output!
2011-05-20Merge branch 'maint-0.2.2'Roger Dingledine
2011-05-19log the reason for publishing a new relay descriptorRoger Dingledine
now we have a better chance of hunting down the root cause of bug 1810.
2011-04-07Merge remote-tracking branch 'origin/maint-0.2.2'Nick Mathewson
Conflicts: src/common/address.c src/common/compat_libevent.c src/common/memarea.c src/common/util.h src/or/buffers.c src/or/circuitbuild.c src/or/circuituse.c src/or/connection.c src/or/directory.c src/or/networkstatus.c src/or/or.h src/or/routerlist.c
2011-03-25Fixup tor_addr_to_sockaddr return conventionNick Mathewson
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