When launching a resolve request on behalf of an AF_UNIX control, omit the address field of the new entry connection. Fixes bug 8639.

1 files changed, 15 insertions, 2 deletions

diff --git a/src/or/control.c b/src/or/control.c
index 48782682c..88bd00b5e 100644
--- a/src/or/control.c
+++ b/src/or/control.c
@@ -3743,8 +3743,21 @@ control_event_stream_status(entry_connection_t *conn, stream_status_event_t tp,
   }
 
   if (tp == STREAM_EVENT_NEW || tp == STREAM_EVENT_NEW_RESOLVE) {
-    tor_snprintf(addrport_buf,sizeof(addrport_buf), " SOURCE_ADDR=%s:%d",
-                 ENTRY_TO_CONN(conn)->address, ENTRY_TO_CONN(conn)->port);
+    /*
+     * When the control conn is an AF_UNIX socket and we have no address,
+     * it gets set to "(Tor_internal)"; see dnsserv_launch_request() in
+     * dnsserv.c.
+     */
+    if (strcmp(ENTRY_TO_CONN(conn)->address, "(Tor_internal)") != 0) {
+      tor_snprintf(addrport_buf,sizeof(addrport_buf), " SOURCE_ADDR=%s:%d",
+                   ENTRY_TO_CONN(conn)->address, ENTRY_TO_CONN(conn)->port);
+    } else {
+      /*
+       * else leave it blank so control on AF_UNIX doesn't need to make
+       * something up.
+       */
+      addrport_buf[0] = '\0';
+    }
   } else {
     addrport_buf[0] = '\0';
   }