diff options
Diffstat (limited to 'src/or/directory.c')
| -rw-r--r-- | src/or/directory.c | 104 |
1 files changed, 57 insertions, 47 deletions
diff --git a/src/or/directory.c b/src/or/directory.c index 4f24f84d9c..348d971b34 100644 --- a/src/or/directory.c +++ b/src/or/directory.c @@ -64,8 +64,6 @@ static void directory_send_command(dir_connection_t *conn, time_t if_modified_since); static int directory_handle_command(dir_connection_t *conn); static int body_is_plausible(const char *body, size_t body_len, int purpose); -static int purpose_needs_anonymity(uint8_t dir_purpose, - uint8_t router_purpose); static char *http_get_header(const char *headers, const char *which); static void http_set_address_origin(const char *headers, connection_t *conn); static void connection_dir_download_routerdesc_failed(dir_connection_t *conn); @@ -120,7 +118,7 @@ static void directory_initiate_command_rend(const tor_addr_t *addr, /** Return true iff the directory purpose <b>dir_purpose</b> (and if it's * fetching descriptors, it's fetching them for <b>router_purpose</b>) * must use an anonymous connection to a directory. */ -static int +STATIC int purpose_needs_anonymity(uint8_t dir_purpose, uint8_t router_purpose) { if (get_options()->AllDirActionsPrivate) @@ -198,6 +196,47 @@ dir_conn_purpose_to_string(int purpose) return "(unknown)"; } +/** Return the requisite directory information types. */ +STATIC dirinfo_type_t +dir_fetch_type(int dir_purpose, int router_purpose, const char *resource) +{ + dirinfo_type_t type; + switch (dir_purpose) { + case DIR_PURPOSE_FETCH_EXTRAINFO: + type = EXTRAINFO_DIRINFO; + if (router_purpose == ROUTER_PURPOSE_BRIDGE) + type |= BRIDGE_DIRINFO; + else + type |= V3_DIRINFO; + break; + case DIR_PURPOSE_FETCH_SERVERDESC: + if (router_purpose == ROUTER_PURPOSE_BRIDGE) + type = BRIDGE_DIRINFO; + else + type = V3_DIRINFO; + break; + case DIR_PURPOSE_FETCH_STATUS_VOTE: + case DIR_PURPOSE_FETCH_DETACHED_SIGNATURES: + case DIR_PURPOSE_FETCH_CERTIFICATE: + type = V3_DIRINFO; + break; + case DIR_PURPOSE_FETCH_CONSENSUS: + type = V3_DIRINFO; + if (resource && !strcmp(resource, "microdesc")) + type |= MICRODESC_DIRINFO; + break; + case DIR_PURPOSE_FETCH_MICRODESC: + type = MICRODESC_DIRINFO; + break; + default: + log_warn(LD_BUG, "Unexpected purpose %d", (int)dir_purpose); + type = NO_DIRINFO; + break; + } + return type; +} + + /** Return true iff <b>identity_digest</b> is the digest of a router which * says that it caches extrainfos. (If <b>is_authority</b> we always * believe that to be true.) */ @@ -386,47 +425,21 @@ directory_pick_generic_dirserver(dirinfo_type_t type, int pds_flags, * Use <b>pds_flags</b> as arguments to router_pick_directory_server() * or router_pick_trusteddirserver(). */ -void -directory_get_from_dirserver(uint8_t dir_purpose, uint8_t router_purpose, - const char *resource, int pds_flags) +MOCK_IMPL(void, directory_get_from_dirserver, (uint8_t dir_purpose, + uint8_t router_purpose, + const char *resource, + int pds_flags)) { const routerstatus_t *rs = NULL; const or_options_t *options = get_options(); int prefer_authority = directory_fetches_from_authorities(options); int require_authority = 0; int get_via_tor = purpose_needs_anonymity(dir_purpose, router_purpose); - dirinfo_type_t type; + dirinfo_type_t type = dir_fetch_type(dir_purpose, router_purpose, resource); time_t if_modified_since = 0; - /* FFFF we could break this switch into its own function, and call - * it elsewhere in directory.c. -RD */ - switch (dir_purpose) { - case DIR_PURPOSE_FETCH_EXTRAINFO: - type = EXTRAINFO_DIRINFO | - (router_purpose == ROUTER_PURPOSE_BRIDGE ? BRIDGE_DIRINFO : - V3_DIRINFO); - break; - case DIR_PURPOSE_FETCH_SERVERDESC: - type = (router_purpose == ROUTER_PURPOSE_BRIDGE ? BRIDGE_DIRINFO : - V3_DIRINFO); - break; - case DIR_PURPOSE_FETCH_STATUS_VOTE: - case DIR_PURPOSE_FETCH_DETACHED_SIGNATURES: - case DIR_PURPOSE_FETCH_CERTIFICATE: - type = V3_DIRINFO; - break; - case DIR_PURPOSE_FETCH_CONSENSUS: - type = V3_DIRINFO; - if (resource && !strcmp(resource,"microdesc")) - type |= MICRODESC_DIRINFO; - break; - case DIR_PURPOSE_FETCH_MICRODESC: - type = MICRODESC_DIRINFO; - break; - default: - log_warn(LD_BUG, "Unexpected purpose %d", (int)dir_purpose); - return; - } + if (type == NO_DIRINFO) + return; if (dir_purpose == DIR_PURPOSE_FETCH_CONSENSUS) { int flav = FLAV_NS; @@ -526,20 +539,16 @@ directory_get_from_dirserver(uint8_t dir_purpose, uint8_t router_purpose, /* */ rs = directory_pick_generic_dirserver(type, pds_flags, dir_purpose); - if (!rs) { - /*XXXX024 I'm pretty sure this can never do any good, since - * rs isn't set. */ + if (!rs) get_via_tor = 1; /* last resort: try routing it via Tor */ - } } } - } else { /* get_via_tor */ + } + + if (get_via_tor) { /* Never use fascistfirewall; we're going via Tor. */ - if (1) { - /* anybody with a non-zero dirport will do. Disregard firewalls. */ - pds_flags |= PDS_IGNORE_FASCISTFIREWALL; - rs = router_pick_directory_server(type, pds_flags); - } + pds_flags |= PDS_IGNORE_FASCISTFIREWALL; + rs = router_pick_directory_server(type, pds_flags); } /* If we have any hope of building an indirect conn, we know some router @@ -1271,7 +1280,8 @@ directory_send_command(dir_connection_t *conn, return; } - if (strlen(proxystring) + strlen(url) >= 4096) { + /* warn in the non-tunneled case */ + if (direct && (strlen(proxystring) + strlen(url) >= 4096)) { log_warn(LD_BUG, "Squid does not like URLs longer than 4095 bytes, and this " "one is %d bytes long: %s%s", |