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[tor-commits] [tor/master] Introduce and use router_get_active_listener_port_by_type().



commit fedf76a2e6452124c38ecc51cea6567b9d5cc23d
Author: George Kadianakis <desnacked@xxxxxxxxxx>
Date:   Sat Mar 31 13:54:09 2012 +0200

    Introduce and use router_get_active_listener_port_by_type().
    
    router_get_active_listener_port_by_type() iterates all connections,
    trying to find a listener of a specific type, and returns its TCP
    port.
---
 src/or/router.c |   35 +++++++++++++++++++++++------------
 src/or/router.h |    1 +
 2 files changed, 24 insertions(+), 12 deletions(-)

diff --git a/src/or/router.c b/src/or/router.c
index bf15689..67d26e1 100644
--- a/src/or/router.c
+++ b/src/or/router.c
@@ -1216,6 +1216,20 @@ consider_publishable_server(int force)
   }
 }
 
+/** Return the port of the first active listener of type
+ *  <b>listener_type</b>. */
+uint16_t
+router_get_active_listener_port_by_type(int listener_type)
+{
+  /* Iterate all connections, find one of the right kind and return
+     the port. Not very sophisticated or fast, but effective. */
+  const connection_t *c = connection_get_by_type(listener_type);
+  if (c)
+    return c->port;
+
+  return 0;
+}
+
 /** Return the port that we should advertise as our ORPort; this is either
  * the one configured in the ORPort option, or the one we actually bound to
  * if ORPort is "auto".
@@ -1226,12 +1240,11 @@ router_get_advertised_or_port(const or_options_t *options)
   int port = get_primary_or_port();
   (void)options;
 
-  if (port == CFG_AUTO_PORT) {
-    connection_t *c = connection_get_by_type(CONN_TYPE_OR_LISTENER);
-    if (c)
-      return c->port;
-    return 0;
-  }
+  /* If the port is in 'auto' mode, we have to use
+     router_get_listener_port_by_type(). */
+  if (port == CFG_AUTO_PORT)
+    return router_get_active_listener_port_by_type(CONN_TYPE_OR_LISTENER);
+
   return port;
 }
 
@@ -1248,12 +1261,10 @@ router_get_advertised_dir_port(const or_options_t *options, uint16_t dirport)
 
   if (!dirport_configured)
     return dirport;
-  if (dirport_configured == CFG_AUTO_PORT) {
-    connection_t *c = connection_get_by_type(CONN_TYPE_DIR_LISTENER);
-    if (c)
-      return c->port;
-    return 0;
-  }
+
+  if (dirport_configured == CFG_AUTO_PORT)
+    return router_get_active_listener_port_by_type(CONN_TYPE_DIR_LISTENER);
+
   return dirport_configured;
 }
 
diff --git a/src/or/router.h b/src/or/router.h
index fb91434..294736e 100644
--- a/src/or/router.h
+++ b/src/or/router.h
@@ -53,6 +53,7 @@ int authdir_mode_publishes_statuses(const or_options_t *options);
 int authdir_mode_tests_reachability(const or_options_t *options);
 int authdir_mode_bridge(const or_options_t *options);
 
+uint16_t router_get_active_listener_port_by_type(int listener_type);
 uint16_t router_get_advertised_or_port(const or_options_t *options);
 uint16_t router_get_advertised_dir_port(const or_options_t *options,
                                         uint16_t dirport);



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