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Set guard state on bridge descriptor fetches.
We used to not set the guard state in launch_direct_bridge_descriptor_fetch(). So when a bridge descriptor fetch failed, the guard subsystem would never learn about the fail (and hence the guard's reachability state would not be updated).
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changes/bug21969
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changes/bug21969
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@ -0,0 +1,3 @@
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o Major bugfixes (entry guards):
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- Don't block bootstrapping when a primary bridge is offline and we can't
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get its descriptor. Fixes bug 21969; bugfix on 0.3.0.3-alpha.
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@ -547,6 +547,7 @@ static void
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launch_direct_bridge_descriptor_fetch(bridge_info_t *bridge)
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{
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const or_options_t *options = get_options();
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circuit_guard_state_t *guard_state = NULL;
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if (connection_get_by_type_addr_port_purpose(
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CONN_TYPE_DIR, &bridge->addr, bridge->port,
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@ -570,12 +571,15 @@ launch_direct_bridge_descriptor_fetch(bridge_info_t *bridge)
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return;
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}
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guard_state = get_guard_state_for_bridge_desc_fetch(bridge->identity);
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directory_initiate_command(&bridge->addr, bridge->port,
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NULL, 0, /*no dirport*/
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bridge->identity,
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DIR_PURPOSE_FETCH_SERVERDESC,
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ROUTER_PURPOSE_BRIDGE,
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DIRIND_ONEHOP, "authority.z", NULL, 0, 0, NULL);
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DIRIND_ONEHOP, "authority.z", NULL, 0, 0,
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guard_state);
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}
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/** Fetching the bridge descriptor from the bridge authority returned a
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@ -2926,6 +2926,34 @@ entry_guard_get_by_id_digest(const char *digest)
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get_guard_selection_info(), digest);
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}
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/** We are about to connect to bridge with identity <b>digest</b> to fetch its
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* descriptor. Create a new guard state for this connection and return it. */
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circuit_guard_state_t *
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get_guard_state_for_bridge_desc_fetch(const char *digest)
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{
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circuit_guard_state_t *guard_state = NULL;
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entry_guard_t *guard = NULL;
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guard = entry_guard_get_by_id_digest_for_guard_selection(
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get_guard_selection_info(), digest);
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if (!guard) {
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return NULL;
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}
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/* Update the guard last_tried_to_connect time since it's checked by the
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* guard susbsystem. */
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guard->last_tried_to_connect = approx_time();
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/* Create the guard state */
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guard_state = tor_malloc_zero(sizeof(circuit_guard_state_t));
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guard_state->guard = entry_guard_handle_new(guard);
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guard_state->state = GUARD_CIRC_STATE_USABLE_ON_COMPLETION;
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guard_state->state_set_at = approx_time();
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guard_state->restrictions = NULL;
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return guard_state;
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}
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/** Release all storage held by <b>e</b>. */
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STATIC void
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entry_guard_free(entry_guard_t *e)
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@ -323,6 +323,10 @@ const node_t *guards_choose_dirguard(circuit_guard_state_t **guard_state_out);
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entry_guard_t *entry_guard_get_by_id_digest_for_guard_selection(
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guard_selection_t *gs, const char *digest);
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entry_guard_t *entry_guard_get_by_id_digest(const char *digest);
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circuit_guard_state_t *
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get_guard_state_for_bridge_desc_fetch(const char *digest);
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void entry_guards_changed_for_guard_selection(guard_selection_t *gs);
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void entry_guards_changed(void);
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guard_selection_t * get_guard_selection_info(void);
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