ignore indirect edge registrations in tunnelserver mode

In tunnelserver mode we're not interested to hear about
our client edges, just like in case of subnets.  Just
ignore all requests which are not about our node or the
client node.

The fix is very similar to what was done for subnets.

Note that we don't need to add the "unknown" nodes to
the list in tunnelserver mode too, so move allocation
of new nodes down the line.

diff --git a/src/protocol_edge.c b/src/protocol_edge.c
index bcc17db..0db3e7b 100644 (file)
--- a/src/protocol_edge.c
+++ b/src/protocol_edge.c
@@ -95,6 +95,17 @@ bool add_edge_h(connection_t *c)
        /* Lookup nodes */
 
        from = lookup_node(from_name);
+       to = lookup_node(to_name);
+
+       if(tunnelserver &&
+          from != myself && from != c->node &&
+          to != myself && to != c->node) {
+               /* ignore indirect edge registrations for tunnelserver */
+               ifdebug(PROTOCOL) logger(LOG_WARNING,
+                  _("Ignoring indirect %s from %s (%s)"),
+                  "ADD_EDGE", c->name, c->hostname);
+               return true;
+       }
 
        if(!from) {
                from = new_node();
@@ -102,16 +113,12 @@ bool add_edge_h(connection_t *c)
                node_add(from);
        }
 
-       to = lookup_node(to_name);
-
        if(!to) {
                to = new_node();
                to->name = xstrdup(to_name);
                node_add(to);
        }
 
-       if(tunnelserver && from != myself && from != c->node && to != myself && to != c->node)
-               return false;
 
        /* Convert addresses */
 
@@ -210,6 +217,17 @@ bool del_edge_h(connection_t *c)
        /* Lookup nodes */
 
        from = lookup_node(from_name);
+       to = lookup_node(to_name);
+
+       if(tunnelserver &&
+          from != myself && from != c->node &&
+          to != myself && to != c->node) {
+               /* ignore indirect edge registrations for tunnelserver */
+               ifdebug(PROTOCOL) logger(LOG_WARNING,
+                  _("Ignoring indirect %s from %s (%s)"),
+                  "DEL_EDGE", c->name, c->hostname);
+               return true;
+       }
 
        if(!from) {
                ifdebug(PROTOCOL) logger(LOG_ERR, _("Got %s from %s (%s) which does not appear in the edge tree"),
@@ -217,17 +235,12 @@ bool del_edge_h(connection_t *c)
                return true;
        }
 
-       to = lookup_node(to_name);
-
        if(!to) {
                ifdebug(PROTOCOL) logger(LOG_ERR, _("Got %s from %s (%s) which does not appear in the edge tree"),
                                   "DEL_EDGE", c->name, c->hostname);
                return true;
        }
 
-       if(tunnelserver && from != myself && from != c->node && to != myself && to != c->node)
-               return false;
-
        /* Check if edge exists */
 
        e = lookup_edge(from, to);