mirror of
https://gitlab.torproject.org/tpo/core/tor.git
synced 2024-11-10 21:23:58 +01:00
Start refactoring trusted_dir_servers into trusted and fallback lists
We use trusted_dir_server_t for two pieces of functionality: a list of all directory authorities, and a list of initial places to look for a directory. With this patch we start to separate those two roles. There is as of now no actual way to be a fallback directory without being an authority.
This commit is contained in:
parent
404e3dd481
commit
5c51b3f1f0
@ -854,7 +854,8 @@ consider_adding_dir_authorities(const or_options_t *options,
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{
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{
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config_line_t *cl;
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config_line_t *cl;
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int need_to_update =
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int need_to_update =
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!smartlist_len(router_get_trusted_dir_servers()) || !old_options ||
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!smartlist_len(router_get_trusted_dir_servers()) ||
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!smartlist_len(router_get_fallback_dir_servers()) || !old_options ||
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!config_lines_eq(options->DirServers, old_options->DirServers) ||
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!config_lines_eq(options->DirServers, old_options->DirServers) ||
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!config_lines_eq(options->AlternateBridgeAuthority,
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!config_lines_eq(options->AlternateBridgeAuthority,
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old_options->AlternateBridgeAuthority) ||
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old_options->AlternateBridgeAuthority) ||
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@ -867,7 +868,7 @@ consider_adding_dir_authorities(const or_options_t *options,
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return 0; /* all done */
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return 0; /* all done */
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/* Start from a clean slate. */
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/* Start from a clean slate. */
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clear_trusted_dir_servers();
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clear_dir_servers();
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if (!options->DirServers) {
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if (!options->DirServers) {
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/* then we may want some of the defaults */
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/* then we may want some of the defaults */
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@ -474,7 +474,7 @@ directory_get_from_dirserver(uint8_t dir_purpose, uint8_t router_purpose,
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if (!rs) {
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if (!rs) {
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log_info(LD_DIR, "No router found for %s; falling back to "
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log_info(LD_DIR, "No router found for %s; falling back to "
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"dirserver list.", dir_conn_purpose_to_string(dir_purpose));
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"dirserver list.", dir_conn_purpose_to_string(dir_purpose));
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rs = router_pick_trusteddirserver(type, pds_flags);
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rs = router_pick_fallback_dirserver(type, pds_flags);
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if (!rs)
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if (!rs)
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get_via_tor = 1; /* last resort: try routing it via Tor */
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get_via_tor = 1; /* last resort: try routing it via Tor */
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}
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}
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@ -1665,7 +1665,7 @@ connection_dir_client_reached_eof(dir_connection_t *conn)
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conn->base_.port);
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conn->base_.port);
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if ((rs = router_get_mutable_consensus_status_by_id(id_digest)))
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if ((rs = router_get_mutable_consensus_status_by_id(id_digest)))
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rs->last_dir_503_at = now;
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rs->last_dir_503_at = now;
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if ((ds = router_get_trusteddirserver_by_digest(id_digest)))
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if ((ds = router_get_fallback_dirserver_by_digest(id_digest)))
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ds->fake_status.last_dir_503_at = now;
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ds->fake_status.last_dir_503_at = now;
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tor_free(body); tor_free(headers); tor_free(reason);
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tor_free(body); tor_free(headers); tor_free(reason);
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@ -3603,7 +3603,7 @@ dir_networkstatus_download_failed(smartlist_t *failed, int status_code)
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escaped(fp));
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escaped(fp));
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continue;
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continue;
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}
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}
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dir = router_get_trusteddirserver_by_digest(digest);
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dir = router_get_fallback_dirserver_by_digest(digest);
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if (dir)
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if (dir)
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download_status_failed(&dir->v2_ns_dl_status, status_code);
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download_status_failed(&dir->v2_ns_dl_status, status_code);
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@ -2062,7 +2062,7 @@ routers_update_status_from_consensus_networkstatus(smartlist_t *routers,
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/* We have a routerstatus for this router. */
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/* We have a routerstatus for this router. */
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const char *digest = router->cache_info.identity_digest;
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const char *digest = router->cache_info.identity_digest;
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ds = router_get_trusteddirserver_by_digest(digest);
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ds = router_get_fallback_dirserver_by_digest(digest);
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/* Is it the same descriptor, or only the same identity? */
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/* Is it the same descriptor, or only the same identity? */
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if (tor_memeq(router->cache_info.signed_descriptor_digest,
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if (tor_memeq(router->cache_info.signed_descriptor_digest,
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@ -1167,6 +1167,11 @@ router_set_status(const char *digest, int up)
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node_t *node;
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node_t *node;
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tor_assert(digest);
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tor_assert(digest);
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SMARTLIST_FOREACH(router_get_fallback_dir_servers(),
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trusted_dir_server_t *, d,
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if (tor_memeq(d->digest, digest, DIGEST_LEN))
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d->is_running = up);
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SMARTLIST_FOREACH(router_get_trusted_dir_servers(),
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SMARTLIST_FOREACH(router_get_trusted_dir_servers(),
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trusted_dir_server_t *, d,
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trusted_dir_server_t *, d,
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if (tor_memeq(d->digest, digest, DIGEST_LEN))
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if (tor_memeq(d->digest, digest, DIGEST_LEN))
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@ -4499,6 +4499,8 @@ typedef struct trusted_dir_server_t {
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* high-security) identity key. */
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* high-security) identity key. */
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unsigned int is_running:1; /**< True iff we think this server is running. */
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unsigned int is_running:1; /**< True iff we think this server is running. */
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unsigned int is_authority:1; /**< True iff this is a directory authority
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* of some kind. */
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/** True iff this server has accepted the most recent server descriptor
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/** True iff this server has accepted the most recent server descriptor
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* we tried to upload to it. */
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* we tried to upload to it. */
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@ -45,8 +45,12 @@
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static const routerstatus_t *router_pick_directory_server_impl(
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static const routerstatus_t *router_pick_directory_server_impl(
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dirinfo_type_t auth, int flags);
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dirinfo_type_t auth, int flags);
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static const routerstatus_t *router_pick_trusteddirserver_impl(
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static const routerstatus_t *router_pick_trusteddirserver_impl(
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dirinfo_type_t auth, int flags, int *n_busy_out);
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const smartlist_t *sourcelist, dirinfo_type_t auth,
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static void mark_all_trusteddirservers_up(void);
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int flags, int *n_busy_out);
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static const routerstatus_t *router_pick_dirserver_generic(
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smartlist_t *sourcelist,
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dirinfo_type_t type, int flags);
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static void mark_all_dirservers_up(smartlist_t *server_list);
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static int router_nickname_matches(const routerinfo_t *router,
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static int router_nickname_matches(const routerinfo_t *router,
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const char *nickname);
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const char *nickname);
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static void trusted_dir_server_free(trusted_dir_server_t *ds);
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static void trusted_dir_server_free(trusted_dir_server_t *ds);
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@ -72,9 +76,12 @@ DECLARE_TYPED_DIGESTMAP_FNS(eimap_, digest_ei_map_t, extrainfo_t)
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/****************************************************************************/
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/****************************************************************************/
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/** Global list of a trusted_dir_server_t object for each trusted directory
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/** Global list of a trusted_dir_server_t object for each directory
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* server. */
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* authority. */
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static smartlist_t *trusted_dir_servers = NULL;
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static smartlist_t *trusted_dir_servers = NULL;
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/** Global list of trusted_dir_server_t objects for all directory authorities
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* and all fallback directory servers. */
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static smartlist_t *fallback_dir_servers = NULL;
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/** List of for a given authority, and download status for latest certificate.
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/** List of for a given authority, and download status for latest certificate.
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*/
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*/
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@ -927,6 +934,15 @@ router_get_trusted_dir_servers(void)
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return trusted_dir_servers;
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return trusted_dir_servers;
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}
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}
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const smartlist_t *
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router_get_fallback_dir_servers(void)
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{
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if (!fallback_dir_servers)
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fallback_dir_servers = smartlist_new();
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return fallback_dir_servers;
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}
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/** Try to find a running dirserver that supports operations of <b>type</b>.
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/** Try to find a running dirserver that supports operations of <b>type</b>.
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*
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*
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* If there are no running dirservers in our routerlist and the
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* If there are no running dirservers in our routerlist and the
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@ -960,7 +976,7 @@ router_pick_directory_server(dirinfo_type_t type, int flags)
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"No reachable router entries for dirservers. "
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"No reachable router entries for dirservers. "
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"Trying them all again.");
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"Trying them all again.");
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/* mark all authdirservers as up again */
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/* mark all authdirservers as up again */
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mark_all_trusteddirservers_up();
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mark_all_dirservers_up(fallback_dir_servers);
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/* try again */
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/* try again */
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choice = router_pick_directory_server_impl(type, flags);
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choice = router_pick_directory_server_impl(type, flags);
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return choice;
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return choice;
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@ -1025,6 +1041,24 @@ router_get_trusteddirserver_by_digest(const char *digest)
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return NULL;
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return NULL;
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}
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}
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/** Return the trusted_dir_server_t for the fallback dirserver whose identity
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* key hashes to <b>digest</b>, or NULL if no such authority is known.
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*/
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trusted_dir_server_t *
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router_get_fallback_dirserver_by_digest(const char *digest)
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{
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if (!trusted_dir_servers)
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return NULL;
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SMARTLIST_FOREACH(trusted_dir_servers, trusted_dir_server_t *, ds,
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{
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if (tor_memeq(ds->digest, digest, DIGEST_LEN))
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return ds;
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});
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return NULL;
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}
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/** Return the trusted_dir_server_t for the directory authority whose
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/** Return the trusted_dir_server_t for the directory authority whose
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* v3 identity key hashes to <b>digest</b>, or NULL if no such authority
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* v3 identity key hashes to <b>digest</b>, or NULL if no such authority
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* is known.
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* is known.
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@ -1045,18 +1079,37 @@ trusteddirserver_get_by_v3_auth_digest(const char *digest)
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return NULL;
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return NULL;
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}
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}
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/** Try to find a running trusted dirserver. Flags are as for
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/** Try to find a running directory authority. Flags are as for
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* router_pick_directory_server.
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* router_pick_directory_server.
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*/
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*/
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const routerstatus_t *
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const routerstatus_t *
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router_pick_trusteddirserver(dirinfo_type_t type, int flags)
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router_pick_trusteddirserver(dirinfo_type_t type, int flags)
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{
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return router_pick_dirserver_generic(trusted_dir_servers, type, flags);
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}
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/** Try to find a running fallback directory Flags are as for
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* router_pick_directory_server.
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*/
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const routerstatus_t *
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router_pick_fallback_dirserver(dirinfo_type_t type, int flags)
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{
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return router_pick_dirserver_generic(fallback_dir_servers, type, flags);
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}
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/** Try to find a running fallback directory Flags are as for
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* router_pick_directory_server.
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*/
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static const routerstatus_t *
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router_pick_dirserver_generic(smartlist_t *sourcelist,
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dirinfo_type_t type, int flags)
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{
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{
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const routerstatus_t *choice;
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const routerstatus_t *choice;
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int busy = 0;
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int busy = 0;
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if (get_options()->PreferTunneledDirConns)
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if (get_options()->PreferTunneledDirConns)
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flags |= PDS_PREFER_TUNNELED_DIR_CONNS_;
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flags |= PDS_PREFER_TUNNELED_DIR_CONNS_;
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choice = router_pick_trusteddirserver_impl(type, flags, &busy);
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choice = router_pick_trusteddirserver_impl(sourcelist, type, flags, &busy);
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if (choice || !(flags & PDS_RETRY_IF_NO_SERVERS))
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if (choice || !(flags & PDS_RETRY_IF_NO_SERVERS))
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return choice;
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return choice;
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if (busy) {
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if (busy) {
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@ -1069,9 +1122,9 @@ router_pick_trusteddirserver(dirinfo_type_t type, int flags)
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}
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}
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log_info(LD_DIR,
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log_info(LD_DIR,
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"No trusted dirservers are reachable. Trying them all again.");
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"No dirservers are reachable. Trying them all again.");
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mark_all_trusteddirservers_up();
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mark_all_dirservers_up(sourcelist);
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return router_pick_trusteddirserver_impl(type, flags, NULL);
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return router_pick_trusteddirserver_impl(sourcelist, type, flags, NULL);
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}
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}
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/** How long do we avoid using a directory server after it's given us a 503? */
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/** How long do we avoid using a directory server after it's given us a 503? */
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@ -1196,11 +1249,12 @@ router_pick_directory_server_impl(dirinfo_type_t type, int flags)
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return result ? result->rs : NULL;
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return result ? result->rs : NULL;
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}
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}
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/** Choose randomly from among the trusted dirservers that are up. Flags
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/** Choose randomly from among the trusted_dir_server_ts in sourcelist that
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* are as for router_pick_directory_server_impl().
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* are up. Flags are as for router_pick_directory_server_impl().
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*/
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*/
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static const routerstatus_t *
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static const routerstatus_t *
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router_pick_trusteddirserver_impl(dirinfo_type_t type, int flags,
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router_pick_trusteddirserver_impl(const smartlist_t *sourcelist,
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dirinfo_type_t type, int flags,
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int *n_busy_out)
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int *n_busy_out)
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{
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{
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const or_options_t *options = get_options();
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const or_options_t *options = get_options();
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@ -1217,7 +1271,7 @@ router_pick_trusteddirserver_impl(dirinfo_type_t type, int flags,
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int n_busy = 0;
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int n_busy = 0;
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int try_excluding = 1, n_excluded = 0;
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int try_excluding = 1, n_excluded = 0;
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if (!trusted_dir_servers)
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if (!sourcelist)
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return NULL;
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return NULL;
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retry_without_exclude:
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retry_without_exclude:
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@ -1227,7 +1281,7 @@ router_pick_trusteddirserver_impl(dirinfo_type_t type, int flags,
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overloaded_direct = smartlist_new();
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overloaded_direct = smartlist_new();
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overloaded_tunnel = smartlist_new();
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overloaded_tunnel = smartlist_new();
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SMARTLIST_FOREACH_BEGIN(trusted_dir_servers, trusted_dir_server_t *, d)
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SMARTLIST_FOREACH_BEGIN(sourcelist, const trusted_dir_server_t *, d)
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{
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{
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int is_overloaded =
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int is_overloaded =
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d->fake_status.last_dir_503_at + DIR_503_TIMEOUT > now;
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d->fake_status.last_dir_503_at + DIR_503_TIMEOUT > now;
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@ -1274,11 +1328,11 @@ router_pick_trusteddirserver_impl(dirinfo_type_t type, int flags,
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(!fascistfirewall ||
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(!fascistfirewall ||
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fascist_firewall_allows_address_or(&addr, d->or_port)))
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fascist_firewall_allows_address_or(&addr, d->or_port)))
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smartlist_add(is_overloaded ? overloaded_tunnel : tunnel,
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smartlist_add(is_overloaded ? overloaded_tunnel : tunnel,
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&d->fake_status);
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(routerstatus_t*)&d->fake_status);
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else if (!fascistfirewall ||
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else if (!fascistfirewall ||
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fascist_firewall_allows_address_dir(&addr, d->dir_port))
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fascist_firewall_allows_address_dir(&addr, d->dir_port))
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smartlist_add(is_overloaded ? overloaded_direct : direct,
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smartlist_add(is_overloaded ? overloaded_direct : direct,
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&d->fake_status);
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(routerstatus_t*)&d->fake_status);
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}
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}
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SMARTLIST_FOREACH_END(d);
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SMARTLIST_FOREACH_END(d);
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@ -1311,19 +1365,19 @@ router_pick_trusteddirserver_impl(dirinfo_type_t type, int flags,
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return result;
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return result;
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}
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}
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/** Go through and mark the authoritative dirservers as up. */
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/** Mark as running every trusted_dir_server_t in <b>server_list</b>. */
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static void
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static void
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mark_all_trusteddirservers_up(void)
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mark_all_dirservers_up(smartlist_t *server_list)
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{
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{
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SMARTLIST_FOREACH(nodelist_get_list(), node_t *, node, {
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if (server_list) {
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if (router_digest_is_trusted_dir(node->identity))
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SMARTLIST_FOREACH_BEGIN(server_list, trusted_dir_server_t *, dir) {
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node->is_running = 1;
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});
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if (trusted_dir_servers) {
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SMARTLIST_FOREACH_BEGIN(trusted_dir_servers, trusted_dir_server_t *, dir) {
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routerstatus_t *rs;
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routerstatus_t *rs;
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node_t *node;
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dir->is_running = 1;
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dir->is_running = 1;
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download_status_reset(&dir->v2_ns_dl_status);
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download_status_reset(&dir->v2_ns_dl_status);
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node = node_get_mutable_by_id(dir->digest);
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if (node)
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node->is_running = 1;
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rs = router_get_mutable_consensus_status_by_id(dir->digest);
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rs = router_get_mutable_consensus_status_by_id(dir->digest);
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if (rs) {
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if (rs) {
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rs->last_dir_503_at = 0;
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rs->last_dir_503_at = 0;
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||||||
@ -1348,7 +1402,7 @@ routers_have_same_or_addrs(const routerinfo_t *r1, const routerinfo_t *r2)
|
|||||||
void
|
void
|
||||||
router_reset_status_download_failures(void)
|
router_reset_status_download_failures(void)
|
||||||
{
|
{
|
||||||
mark_all_trusteddirservers_up();
|
mark_all_dirservers_up(fallback_dir_servers);
|
||||||
}
|
}
|
||||||
|
|
||||||
/** Given a <b>router</b>, add every node_t in its family (including the
|
/** Given a <b>router</b>, add every node_t in its family (including the
|
||||||
@ -2910,12 +2964,10 @@ routerlist_free_all(void)
|
|||||||
smartlist_free(warned_nicknames);
|
smartlist_free(warned_nicknames);
|
||||||
warned_nicknames = NULL;
|
warned_nicknames = NULL;
|
||||||
}
|
}
|
||||||
if (trusted_dir_servers) {
|
clear_dir_servers();
|
||||||
SMARTLIST_FOREACH(trusted_dir_servers, trusted_dir_server_t *, ds,
|
smartlist_free(trusted_dir_servers);
|
||||||
trusted_dir_server_free(ds));
|
smartlist_free(fallback_dir_servers);
|
||||||
smartlist_free(trusted_dir_servers);
|
trusted_dir_servers = fallback_dir_servers = NULL;
|
||||||
trusted_dir_servers = NULL;
|
|
||||||
}
|
|
||||||
if (trusted_dir_certs) {
|
if (trusted_dir_certs) {
|
||||||
DIGESTMAP_FOREACH(trusted_dir_certs, key, cert_list_t *, cl) {
|
DIGESTMAP_FOREACH(trusted_dir_certs, key, cert_list_t *, cl) {
|
||||||
SMARTLIST_FOREACH(cl->certs, authority_cert_t *, cert,
|
SMARTLIST_FOREACH(cl->certs, authority_cert_t *, cert,
|
||||||
@ -3737,6 +3789,8 @@ add_trusted_dir_server(const char *nickname, const char *address,
|
|||||||
char *hostname = NULL;
|
char *hostname = NULL;
|
||||||
if (!trusted_dir_servers)
|
if (!trusted_dir_servers)
|
||||||
trusted_dir_servers = smartlist_new();
|
trusted_dir_servers = smartlist_new();
|
||||||
|
if (!fallback_dir_servers)
|
||||||
|
trusted_dir_servers = smartlist_new();
|
||||||
|
|
||||||
if (!address) { /* The address is us; we should guess. */
|
if (!address) { /* The address is us; we should guess. */
|
||||||
if (resolve_my_address(LOG_WARN, get_options(), &a, &hostname) < 0) {
|
if (resolve_my_address(LOG_WARN, get_options(), &a, &hostname) < 0) {
|
||||||
@ -3762,6 +3816,7 @@ add_trusted_dir_server(const char *nickname, const char *address,
|
|||||||
ent->dir_port = dir_port;
|
ent->dir_port = dir_port;
|
||||||
ent->or_port = or_port;
|
ent->or_port = or_port;
|
||||||
ent->is_running = 1;
|
ent->is_running = 1;
|
||||||
|
ent->is_authority = 1;
|
||||||
ent->type = type;
|
ent->type = type;
|
||||||
memcpy(ent->digest, digest, DIGEST_LEN);
|
memcpy(ent->digest, digest, DIGEST_LEN);
|
||||||
if (v3_auth_digest && (type & V3_DIRINFO))
|
if (v3_auth_digest && (type & V3_DIRINFO))
|
||||||
@ -3785,6 +3840,7 @@ add_trusted_dir_server(const char *nickname, const char *address,
|
|||||||
ent->fake_status.or_port = ent->or_port;
|
ent->fake_status.or_port = ent->or_port;
|
||||||
|
|
||||||
smartlist_add(trusted_dir_servers, ent);
|
smartlist_add(trusted_dir_servers, ent);
|
||||||
|
smartlist_add(fallback_dir_servers, ent);
|
||||||
router_dir_info_changed();
|
router_dir_info_changed();
|
||||||
return ent;
|
return ent;
|
||||||
}
|
}
|
||||||
@ -3816,13 +3872,18 @@ trusted_dir_server_free(trusted_dir_server_t *ds)
|
|||||||
tor_free(ds);
|
tor_free(ds);
|
||||||
}
|
}
|
||||||
|
|
||||||
/** Remove all members from the list of trusted dir servers. */
|
/** Remove all members from the list of dir servers. */
|
||||||
void
|
void
|
||||||
clear_trusted_dir_servers(void)
|
clear_dir_servers(void)
|
||||||
{
|
{
|
||||||
if (trusted_dir_servers) {
|
if (fallback_dir_servers) {
|
||||||
SMARTLIST_FOREACH(trusted_dir_servers, trusted_dir_server_t *, ent,
|
SMARTLIST_FOREACH(fallback_dir_servers, trusted_dir_server_t *, ent,
|
||||||
trusted_dir_server_free(ent));
|
trusted_dir_server_free(ent));
|
||||||
|
smartlist_clear(fallback_dir_servers);
|
||||||
|
} else {
|
||||||
|
fallback_dir_servers = smartlist_new();
|
||||||
|
}
|
||||||
|
if (trusted_dir_servers) {
|
||||||
smartlist_clear(trusted_dir_servers);
|
smartlist_clear(trusted_dir_servers);
|
||||||
} else {
|
} else {
|
||||||
trusted_dir_servers = smartlist_new();
|
trusted_dir_servers = smartlist_new();
|
||||||
|
@ -26,13 +26,18 @@ void authority_certs_fetch_missing(networkstatus_t *status, time_t now);
|
|||||||
int router_reload_router_list(void);
|
int router_reload_router_list(void);
|
||||||
int authority_cert_dl_looks_uncertain(const char *id_digest);
|
int authority_cert_dl_looks_uncertain(const char *id_digest);
|
||||||
const smartlist_t *router_get_trusted_dir_servers(void);
|
const smartlist_t *router_get_trusted_dir_servers(void);
|
||||||
|
const smartlist_t *router_get_fallback_dir_servers(void);
|
||||||
|
|
||||||
const routerstatus_t *router_pick_directory_server(dirinfo_type_t type,
|
const routerstatus_t *router_pick_directory_server(dirinfo_type_t type,
|
||||||
int flags);
|
int flags);
|
||||||
trusted_dir_server_t *router_get_trusteddirserver_by_digest(const char *d);
|
trusted_dir_server_t *router_get_trusteddirserver_by_digest(const char *d);
|
||||||
|
trusted_dir_server_t *router_get_fallback_dirserver_by_digest(
|
||||||
|
const char *digest);
|
||||||
trusted_dir_server_t *trusteddirserver_get_by_v3_auth_digest(const char *d);
|
trusted_dir_server_t *trusteddirserver_get_by_v3_auth_digest(const char *d);
|
||||||
const routerstatus_t *router_pick_trusteddirserver(dirinfo_type_t type,
|
const routerstatus_t *router_pick_trusteddirserver(dirinfo_type_t type,
|
||||||
int flags);
|
int flags);
|
||||||
|
const routerstatus_t *router_pick_fallback_dirserver(dirinfo_type_t type,
|
||||||
|
int flags);
|
||||||
int router_get_my_share_of_directory_requests(double *v2_share_out,
|
int router_get_my_share_of_directory_requests(double *v2_share_out,
|
||||||
double *v3_share_out);
|
double *v3_share_out);
|
||||||
void router_reset_status_download_failures(void);
|
void router_reset_status_download_failures(void);
|
||||||
@ -133,7 +138,7 @@ trusted_dir_server_t *add_trusted_dir_server(const char *nickname,
|
|||||||
const char *digest, const char *v3_auth_digest,
|
const char *digest, const char *v3_auth_digest,
|
||||||
dirinfo_type_t type);
|
dirinfo_type_t type);
|
||||||
void authority_cert_free(authority_cert_t *cert);
|
void authority_cert_free(authority_cert_t *cert);
|
||||||
void clear_trusted_dir_servers(void);
|
void clear_dir_servers(void);
|
||||||
int any_trusted_dir_is_v1_authority(void);
|
int any_trusted_dir_is_v1_authority(void);
|
||||||
void update_consensus_router_descriptor_downloads(time_t now, int is_vote,
|
void update_consensus_router_descriptor_downloads(time_t now, int is_vote,
|
||||||
networkstatus_t *consensus);
|
networkstatus_t *consensus);
|
||||||
|
Loading…
Reference in New Issue
Block a user