Make stream events for RESOLVE lookups more consistent

Fixes 8203; patch by Desoxy

changes/bug8203

@@ -0,0 +1,4 @@
+  o Minor bugfixes:
+    - Make the format and order of STREAM events for DNS lookups consistent
+      among the various ways to launch DNS lookups. Fix for bug 8203;
+      bugfix on 0.2.0.24-rc. Patch by "Desoxy."

src/or/connection_edge.c

@@ -1945,13 +1945,14 @@ connection_ap_handshake_send_resolve(entry_connection_t *ap_conn)
                            string_addr, payload_len) < 0)
     return -1; /* circuit is closed, don't continue */
 
-  tor_free(base_conn->address); /* Maybe already set by dnsserv. */
-  base_conn->address = tor_strdup("(Tor_internal)");
+  if (!base_conn->address) {
+    /* This might be unnecessary. XXXX */
+    base_conn->address = tor_dup_addr(&base_conn->addr);
+  }
   base_conn->state = AP_CONN_STATE_RESOLVE_WAIT;
   log_info(LD_APP,"Address sent for resolve, ap socket "TOR_SOCKET_T_FORMAT
            ", n_circ_id %u",
            base_conn->s, (unsigned)circ->base_.n_circ_id);
-  control_event_stream_status(ap_conn, STREAM_EVENT_NEW, 0);
   control_event_stream_status(ap_conn, STREAM_EVENT_SENT_RESOLVE, 0);
   return 0;
 }
@@ -2201,9 +2202,11 @@ connection_ap_handshake_socks_reply(entry_connection_t *conn, char *reply,
 
   tor_assert(conn->socks_request); /* make sure it's an AP stream */
 
-  control_event_stream_status(conn,
-     status==SOCKS5_SUCCEEDED ? STREAM_EVENT_SUCCEEDED : STREAM_EVENT_FAILED,
-                              endreason);
+  if (!SOCKS_COMMAND_IS_RESOLVE(conn->socks_request->command)) {
+    control_event_stream_status(conn, status==SOCKS5_SUCCEEDED ?
+                                STREAM_EVENT_SUCCEEDED : STREAM_EVENT_FAILED,
+                                endreason);
+  }
 
   /* Flag this stream's circuit as having completed a stream successfully
    * (for path bias) */

src/or/control.c

@@ -2939,7 +2939,7 @@ handle_control_resolve(control_connection_t *conn, uint32_t len,
   failed = smartlist_new();
   SMARTLIST_FOREACH(args, const char *, arg, {
       if (!is_keyval_pair(arg)) {
-          if (dnsserv_launch_request(arg, is_reverse)<0)
+          if (dnsserv_launch_request(arg, is_reverse, conn)<0)
             smartlist_add(failed, (char*)arg);
       }
   });
@@ -3742,7 +3742,7 @@ control_event_stream_status(entry_connection_t *conn, stream_status_event_t tp,
     }
   }
 
-  if (tp == STREAM_EVENT_NEW) {
+  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);
   } else {
@@ -3752,11 +3752,7 @@ control_event_stream_status(entry_connection_t *conn, stream_status_event_t tp,
   if (tp == STREAM_EVENT_NEW_RESOLVE) {
     purpose = " PURPOSE=DNS_REQUEST";
   } else if (tp == STREAM_EVENT_NEW) {
-    if (ENTRY_TO_EDGE_CONN(conn)->is_dns_request ||
-        (conn->socks_request &&
-         SOCKS_COMMAND_IS_RESOLVE(conn->socks_request->command)))
-      purpose = " PURPOSE=DNS_REQUEST";
-    else if (conn->use_begindir) {
+    if (conn->use_begindir) {
       connection_t *linked = ENTRY_TO_CONN(conn)->linked_conn;
       int linked_dir_purpose = -1;
       if (linked && linked->type == CONN_TYPE_DIR)

src/or/dnsserv.c

@@ -147,7 +147,7 @@ evdns_server_callback(struct evdns_server_request *req, void *data_)
     return;
   }
 
-  control_event_stream_status(entry_conn, STREAM_EVENT_NEW, 0);
+  control_event_stream_status(entry_conn, STREAM_EVENT_NEW_RESOLVE, 0);
 
   /* Now, unless a controller asked us to leave streams unattached,
   * throw the connection over to get rewritten (which will
@@ -170,7 +170,7 @@ evdns_server_callback(struct evdns_server_request *req, void *data_)
  * response; -1 if we couldn't launch the request.
  */
 int
-dnsserv_launch_request(const char *name, int reverse)
+dnsserv_launch_request(const char *name, int reverse, control_connection_t *control_conn)
 {
   entry_connection_t *entry_conn;
   edge_connection_t *conn;
@@ -181,6 +181,10 @@ dnsserv_launch_request(const char *name, int reverse)
   conn = ENTRY_TO_EDGE_CONN(entry_conn);
   conn->base_.state = AP_CONN_STATE_RESOLVE_WAIT;
 
+  tor_addr_copy(&TO_CONN(conn)->addr, &control_conn->base_.addr);
+  TO_CONN(conn)->port = control_conn->base_.port;
+  TO_CONN(conn)->address = tor_dup_addr(&control_conn->base_.addr);
+
   if (reverse)
     entry_conn->socks_request->command = SOCKS_COMMAND_RESOLVE_PTR;
   else
@@ -203,6 +207,8 @@ dnsserv_launch_request(const char *name, int reverse)
     return -1;
   }
 
+  control_event_stream_status(entry_conn, STREAM_EVENT_NEW_RESOLVE, 0);
+
   /* Now, unless a controller asked us to leave streams unattached,
   * throw the connection over to get rewritten (which will
   * answer it immediately if it's in the cache, or completely bogus, or

src/or/dnsserv.h

@@ -20,7 +20,7 @@ void dnsserv_resolved(entry_connection_t *conn,
                       const char *answer,
                       int ttl);
 void dnsserv_reject_request(entry_connection_t *conn);
-int dnsserv_launch_request(const char *name, int is_reverse);
+int dnsserv_launch_request(const char *name, int is_reverse, control_connection_t *control_conn);
 
 #endif