Issues with router_get_by_nickname()

https://trac.torproject.org/projects/tor/ticket/1859

Use router_get_by_digest() instead of router_get_by_hexdigest()
in circuit_discard_optional_exit_enclaves() and
rend_client_get_random_intro(), per Nick's comments.

Using router_get_by_digest() in rend_client_get_random_intro() will
break hidden services published by Tor versions pre 0.1.2.18 and
0.2.07-alpha as they only publish by nickname. This is acceptable
however as these versions only publish to authority tor26 and
don't work for versions in the 0.2.2.x series anyway.

diff --git a/src/or/connection_edge.c b/src/or/connection_edge.c
index eba83ba9e97c1b6c467d808067200b1412d8a970..f72aa9418196ad0573f107ed5db4ba7d0d952fde 100644 (file)
--- a/src/or/connection_edge.c
+++ b/src/or/connection_edge.c
@@ -571,7 +571,7 @@ circuit_discard_optional_exit_enclaves(extend_info_t *info)
         !edge_conn->chosen_exit_retries)
       continue;
     r1 = router_get_by_nickname(edge_conn->chosen_exit_name, 0);
-    r2 = router_get_by_hexdigest(info->identity_digest);
+    r2 = router_get_by_digest(info->identity_digest);
     if (!r1 || !r2 || r1 != r2)
       continue;
     tor_assert(edge_conn->socks_request);

diff --git a/src/or/rendclient.c b/src/or/rendclient.c
index 97fb6f0fd3ae34a4c6bfa2d7e27cd1f1fcb2f9c4..ca3f213dca363daed850bfe1716f332258d991b2 100644 (file)
--- a/src/or/rendclient.c
+++ b/src/or/rendclient.c
@@ -810,7 +810,7 @@ rend_client_get_random_intro(const rend_data_t *rend_query)
   intro = smartlist_get(entry->parsed->intro_nodes, i);
   /* Do we need to look up the router or is the extend info complete? */
   if (!intro->extend_info->onion_key) {
-    router = router_get_by_hexdigest(intro->extend_info->identity_digest);
+    router = router_get_by_digest(intro->extend_info->identity_digest);
     if (!router) {
       log_info(LD_REND, "Unknown router with nickname '%s'; trying another.",
                intro->extend_info->nickname);