commit 34a6b8b7e588b6f10e6e87cf876ef6ada49f8b8a Author: Robert Ransom rransom.8774@gmail.com Date: Sat Sep 17 03:23:26 2011 -0700

Clear the timed_out flag when an HS connection attempt ends --- changes/bug1297b | 8 ++++++++ src/or/circuituse.c | 7 +++++++ src/or/connection_edge.c | 12 ++++++++++++ src/or/rendclient.c | 23 +++++++++++++++++++++++ src/or/rendclient.h | 2 ++ 5 files changed, 52 insertions(+), 0 deletions(-)

diff --git a/changes/bug1297b b/changes/bug1297b new file mode 100644 index 0000000..6b0169d --- /dev/null +++ b/changes/bug1297b @@ -0,0 +1,8 @@ + o Minor bugfixes: + + - When one of a hidden service's introduction points times out, + consider trying it again during the next attempt to connect to + the HS. Previously, we would not try it again unless a newly + fetched descriptor contained it. Required by fixes for bugs + 1297 and 3825. + diff --git a/src/or/circuituse.c b/src/or/circuituse.c index 0ad8b3b..f2fd6fe 100644 --- a/src/or/circuituse.c +++ b/src/or/circuituse.c @@ -1464,6 +1464,13 @@ link_apconn_to_circ(edge_connection_t *apconn, origin_circuit_t *circ, /* assert_connection_ok(conn, time(NULL)); */ circ->p_streams = apconn;

+ if (connection_edge_is_rendezvous_stream(apconn)) { + /* We are attaching a stream to a rendezvous circuit. That means + * that an attempt to connect to a hidden service just + * succeeded. Tell rendclient.c. */ + rend_client_note_connection_attempt_ended(apconn->rend_data->onion_address); + } + if (cpath) { /* we were given one; use it */ tor_assert(cpath_is_on_circuit(circ, cpath)); apconn->cpath_layer = cpath; diff --git a/src/or/connection_edge.c b/src/or/connection_edge.c index 8609b02..0c5ebde 100644 --- a/src/or/connection_edge.c +++ b/src/or/connection_edge.c @@ -68,6 +68,18 @@ _connection_mark_unattached_ap(edge_connection_t *conn, int endreason, tor_assert(conn->_base.type == CONN_TYPE_AP); conn->edge_has_sent_end = 1; /* no circ yet */

+ /* If this is a rendezvous stream and it is failing without ever + * being attached to a circuit, assume that an attempt to connect to + * the destination hidden service has just ended. + * + * XXX023 This condition doesn't limit to only streams failing + * without ever being attached. That sloppiness should be harmless, + * but we should fix it someday anyway. */ + if ((conn->on_circuit != NULL || conn->edge_has_sent_end) && + connection_edge_is_rendezvous_stream(conn)) { + rend_client_note_connection_attempt_ended(conn->rend_data->onion_address); + } + if (conn->_base.marked_for_close) { /* This call will warn as appropriate. */ _connection_mark_for_close(TO_CONN(conn), line, file); diff --git a/src/or/rendclient.c b/src/or/rendclient.c index 013d544..3c1c116 100644 --- a/src/or/rendclient.c +++ b/src/or/rendclient.c @@ -881,10 +881,33 @@ rend_client_desc_trynow(const char *query) "unavailable (try again later).", safe_str_client(query)); connection_mark_unattached_ap(conn, END_STREAM_REASON_RESOLVEFAILED); + rend_client_note_connection_attempt_ended(query); } } SMARTLIST_FOREACH_END(_conn); }

+/** Clear temporary state used only during an attempt to connect to + * the hidden service named <b>onion_address</b>. Called when a + * connection attempt has ended; may be called occasionally at other + * times, and should be reasonably harmless. */ +void +rend_client_note_connection_attempt_ended(const char *onion_address) +{ + rend_cache_entry_t *cache_entry = NULL; + rend_cache_lookup_entry(onion_address, -1, &cache_entry); + + log_info(LD_REND, "Connection attempt for %s has ended; " + "cleaning up temporary state.", + safe_str_client(onion_address)); + + /* Clear the timed_out flag on all remaining intro points for this HS. */ + if (cache_entry != NULL) { + SMARTLIST_FOREACH(cache_entry->parsed->intro_nodes, + rend_intro_point_t *, ip, + ip->timed_out = 0; ); + } +} + /** Return a newly allocated extend_info_t* for a randomly chosen introduction * point for the named hidden service. Return NULL if all introduction points * have been tried and failed. diff --git a/src/or/rendclient.h b/src/or/rendclient.h index 3421e07..46779b7 100644 --- a/src/or/rendclient.h +++ b/src/or/rendclient.h @@ -38,6 +38,8 @@ int rend_client_receive_rendezvous(origin_circuit_t *circ, size_t request_len); void rend_client_desc_trynow(const char *query);

+void rend_client_note_connection_attempt_ended(const char *onion_address); + extend_info_t *rend_client_get_random_intro(const rend_data_t *rend_query); int rend_client_any_intro_points_usable(const rend_cache_entry_t *entry);