Do not launch pluggable transport plugins when DisableNetwork is set.

When DisableNetwork is set, do not launch pluggable transport plugins,
and if any are running already, terminate the existing instances.
Resolves ticket 13213.

changes/bug13213

@@ -0,0 +1,4 @@
+  o Minor bugfixes (Bridges):
+    - When DisableNetwork is set, do not launch pluggable transport
+      plugins, and if any are running already, terminate the existing
+      instances.  Resolves ticket 13213.

src/or/config.c

@@ -1399,24 +1399,26 @@ options_act(const or_options_t *old_options)
 
   mark_transport_list();
   pt_prepare_proxy_list_for_config_read();
-  if (options->ClientTransportPlugin) {
-    for (cl = options->ClientTransportPlugin; cl; cl = cl->next) {
-      if (parse_client_transport_line(options, cl->value, 0)<0) {
-        log_warn(LD_BUG,
-                 "Previously validated ClientTransportPlugin line "
-                 "could not be added!");
-        return -1;
+  if (!options->DisableNetwork) {
+    if (options->ClientTransportPlugin) {
+      for (cl = options->ClientTransportPlugin; cl; cl = cl->next) {
+        if (parse_client_transport_line(options, cl->value, 0)<0) {
+          log_warn(LD_BUG,
+                   "Previously validated ClientTransportPlugin line "
+                   "could not be added!");
+          return -1;
+        }
       }
     }
-  }
 
-  if (options->ServerTransportPlugin && server_mode(options)) {
-    for (cl = options->ServerTransportPlugin; cl; cl = cl->next) {
-      if (parse_server_transport_line(options, cl->value, 0)<0) {
-        log_warn(LD_BUG,
-                 "Previously validated ServerTransportPlugin line "
-                 "could not be added!");
-        return -1;
+    if (options->ServerTransportPlugin && server_mode(options)) {
+      for (cl = options->ServerTransportPlugin; cl; cl = cl->next) {
+        if (parse_server_transport_line(options, cl->value, 0)<0) {
+          log_warn(LD_BUG,
+                   "Previously validated ServerTransportPlugin line "
+                   "could not be added!");
+          return -1;
+        }
       }
     }
   }