Merge branch 'maint-0.3.1' into maint-0.3.2

src/or/entrynodes.c

@@ -740,7 +740,8 @@ node_is_possible_guard(const node_t *node)
           node->is_stable &&
           node->is_fast &&
           node->is_valid &&
-          node_is_dir(node));
+          node_is_dir(node) &&
+          !router_digest_is_me(node->identity));
 }
 
 /**

src/or/protover.c

@@ -694,6 +694,11 @@ protocol_list_contains(const smartlist_t *protos,
 const char *
 protover_compute_for_old_tor(const char *version)
 {
+  if (version == NULL) {
+    /* No known version; guess the oldest series that is still supported. */
+    version = "0.2.5.15";
+  }
+
   if (tor_version_as_new_as(version,
                             FIRST_TOR_VERSION_TO_ADVERTISE_PROTOCOLS)) {
     return "";

src/or/rendservice.c

@@ -1829,6 +1829,7 @@ rend_service_receive_introduction(origin_circuit_t *circuit,
   time_t now = time(NULL);
   time_t elapsed;
   int replay;
+  size_t keylen;
 
   /* Do some initial validation and logging before we parse the cell */
   if (circuit->base_.purpose != CIRCUIT_PURPOSE_S_INTRO) {
@@ -1903,9 +1904,10 @@ rend_service_receive_introduction(origin_circuit_t *circuit,
   }
 
   /* check for replay of PK-encrypted portion. */
+  keylen = crypto_pk_keysize(intro_key);
   replay = replaycache_add_test_and_elapsed(
     intro_point->accepted_intro_rsa_parts,
-    parsed_req->ciphertext, parsed_req->ciphertext_len,
+    parsed_req->ciphertext, MIN(parsed_req->ciphertext_len, keylen),
     &elapsed);
 
   if (replay) {
@@ -3912,6 +3914,10 @@ remove_invalid_intro_points(rend_service_t *service,
       log_info(LD_REND, "Expiring %s as intro point for %s.",
                safe_str_client(extend_info_describe(intro->extend_info)),
                safe_str_client(service->service_id));
+      /* We might have put it in the retry list if so, undo. */
+      if (retry_nodes) {
+        smartlist_remove(retry_nodes, intro);
+      }
       smartlist_add(service->expiring_nodes, intro);
       SMARTLIST_DEL_CURRENT(service->intro_nodes, intro);
       /* Intro point is expired, we need a new one thus don't consider it

src/or/routerlist.c

@@ -2839,7 +2839,10 @@ router_choose_random_node(smartlist_t *excludedsmartlist,
     }
   } SMARTLIST_FOREACH_END(node);
 
-  if ((r = routerlist_find_my_routerinfo()))
+  /* If the node_t is not found we won't be to exclude ourself but we
+   * won't be able to pick ourself in router_choose_random_node() so
+   * this is fine to at least try with our routerinfo_t object. */
+  if ((r = router_get_my_routerinfo()))
     routerlist_add_node_and_family(excludednodes, r);
 
   router_add_running_nodes_to_smartlist(sl, need_uptime, need_capacity,