Bridging: Fix crash on destruction of a partially constructed bridge.

* Promoted some bridge construction debug messages to warnings.

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@392166 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/include/asterisk/bridging.h b/include/asterisk/bridging.h
index 0bfcc325495f3d47dc151e05bde1328241f64cfe..5ea26a7ba4e98cdf284784f8d064dfcf33aecc97 100644 (file)
--- a/include/asterisk/bridging.h
+++ b/include/asterisk/bridging.h
@@ -436,6 +436,8 @@ struct ast_bridge {
        unsigned int reconfigured:1;
        /*! TRUE if the bridge has been dissolved.  Any channel that now tries to join is immediately ejected. */
        unsigned int dissolved:1;
+       /*! TRUE if the bridge construction was completed. */
+       unsigned int construction_completed:1;
 };
 
 /*!

diff --git a/main/bridging.c b/main/bridging.c
index ffe21611661bb7d936fa95e75e2d4d3bed290ac2..ad730f94518ece7702eb9ae04831cbf47ec8a929 100644 (file)
--- a/main/bridging.c
+++ b/main/bridging.c
@@ -1382,6 +1382,7 @@ static void bridge_handle_actions(struct ast_bridge *bridge)
 static struct stasis_message *create_bridge_snapshot_message(struct ast_bridge *bridge)
 {
        RAII_VAR(struct ast_bridge_snapshot *, snapshot, NULL, ao2_cleanup);
+
        snapshot = ast_bridge_snapshot_create(bridge);
        if (!snapshot) {
                return NULL;
@@ -1393,17 +1394,21 @@ static struct stasis_message *create_bridge_snapshot_message(struct ast_bridge *
 static void destroy_bridge(void *obj)
 {
        struct ast_bridge *bridge = obj;
-       RAII_VAR(struct stasis_message *, clear_msg, NULL, ao2_cleanup);
 
        ast_debug(1, "Bridge %s: actually destroying %s bridge, nobody wants it anymore\n",
                bridge->uniqueid, bridge->v_table->name);
 
-       clear_msg = create_bridge_snapshot_message(bridge);
-       if (clear_msg) {
-               RAII_VAR(struct stasis_message *, msg, NULL, ao2_cleanup);
-               msg = stasis_cache_clear_create(clear_msg);
-               if (msg) {
-                       stasis_publish(ast_bridge_topic(bridge), msg);
+       if (bridge->construction_completed) {
+               RAII_VAR(struct stasis_message *, clear_msg, NULL, ao2_cleanup);
+
+               clear_msg = create_bridge_snapshot_message(bridge);
+               if (clear_msg) {
+                       RAII_VAR(struct stasis_message *, msg, NULL, ao2_cleanup);
+
+                       msg = stasis_cache_clear_create(clear_msg);
+                       if (msg) {
+                               stasis_publish(ast_bridge_topic(bridge), msg);
+                       }
                }
        }
 
@@ -1447,6 +1452,7 @@ static void destroy_bridge(void *obj)
 struct ast_bridge *ast_bridge_register(struct ast_bridge *bridge)
 {
        if (bridge) {
+               bridge->construction_completed = 1;
                ast_bridge_publish_state(bridge);
                if (!ao2_link(bridges, bridge)) {
                        ast_bridge_destroy(bridge);
@@ -1495,8 +1501,8 @@ struct ast_bridge *ast_bridge_base_init(struct ast_bridge *self, uint32_t capabi
        /* Use our helper function to find the "best" bridge technology. */
        self->technology = find_best_technology(capabilities, self);
        if (!self->technology) {
-               ast_debug(1, "Bridge %s: Could not create.  No technology available to support it.\n",
-                       self->uniqueid);
+               ast_log(LOG_WARNING, "Bridge %s: Could not create class %s.  No technology to support it.\n",
+                       self->uniqueid, self->v_table->name);
                ao2_ref(self, -1);
                return NULL;
        }
@@ -1505,7 +1511,7 @@ struct ast_bridge *ast_bridge_base_init(struct ast_bridge *self, uint32_t capabi
        ast_debug(1, "Bridge %s: calling %s technology constructor\n",
                self->uniqueid, self->technology->name);
        if (self->technology->create && self->technology->create(self)) {
-               ast_debug(1, "Bridge %s: failed to setup %s technology\n",
+               ast_log(LOG_WARNING, "Bridge %s: failed to setup bridge technology %s\n",
                        self->uniqueid, self->technology->name);
                ao2_ref(self, -1);
                return NULL;
@@ -1513,7 +1519,7 @@ struct ast_bridge *ast_bridge_base_init(struct ast_bridge *self, uint32_t capabi
        ast_debug(1, "Bridge %s: calling %s technology start\n",
                self->uniqueid, self->technology->name);
        if (self->technology->start && self->technology->start(self)) {
-               ast_debug(1, "Bridge %s: failed to start %s technology\n",
+               ast_log(LOG_WARNING, "Bridge %s: failed to start bridge technology %s\n",
                        self->uniqueid, self->technology->name);
                ao2_ref(self, -1);
                return NULL;