Clean up some SIP registry-related memory leaks

1) Be sure and free at unload the epa_backend we allocate at startup
2) Do the same sip_registry cleanup at unload we do at reload

Review: https://reviewboard.asterisk.org/r/1689/

git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.8@352514 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/chan_sip.c b/channels/chan_sip.c
index 6a19c423de2102c583130f75ec6c8a41623dbab2..b444e6da7835e078e1eec671d63ec9b54ced8deb 100644 (file)
--- a/channels/chan_sip.c
+++ b/channels/chan_sip.c
@@ -875,6 +875,17 @@ static int sip_epa_register(const struct epa_static_data *static_data)
        return 0;
 }
 
+static void sip_epa_unregister_all(void)
+{
+       struct epa_backend *backend;
+
+       AST_LIST_LOCK(&epa_static_data_list);
+       while ((backend = AST_LIST_REMOVE_HEAD(&epa_static_data_list, next))) {
+               ast_free(backend);
+       }
+       AST_LIST_UNLOCK(&epa_static_data_list);
+}
+
 static void cc_handle_publish_error(struct sip_pvt *pvt, const int resp, struct sip_request *req, struct sip_epa_entry *epa_entry);
 
 static void cc_epa_destructor(void *data)
@@ -27737,6 +27748,31 @@ static void display_nat_warning(const char *cat, int reason, struct ast_flags *f
        }
 }
 
+static void cleanup_all_regs(void)
+{
+               /* First, destroy all outstanding registry calls */
+               /* This is needed, since otherwise active registry entries will not be destroyed */
+               ASTOBJ_CONTAINER_TRAVERSE(&regl, 1, do {  /* regl is locked */
+                               char buf[1024];
+
+                               ASTOBJ_RDLOCK(iterator); /* now regl is locked, and the object is also locked */
+                               if (iterator->call) {
+                                       ast_debug(3, "Destroying active SIP dialog for registry %s@%s\n", iterator->username, iterator->hostname);
+                                       /* This will also remove references to the registry */
+                                       dialog_unlink_all(iterator->call);
+                                       iterator->call = dialog_unref(iterator->call, "remove iterator->call from registry traversal");
+                               }
+                               if (iterator->expire > -1) {
+                                       AST_SCHED_DEL_UNREF(sched, iterator->expire, registry_unref(iterator, "reg ptr unref from reload config"));
+                               }
+                               if (iterator->timeout > -1) {
+                                       AST_SCHED_DEL_UNREF(sched, iterator->timeout, registry_unref(iterator, "reg ptr unref from reload config"));
+                               }
+                               ASTOBJ_DUMP(buf, sizeof(buf), iterator);
+                               ASTOBJ_UNLOCK(iterator);
+               } while(0));
+}
+
 /*! \brief Re-read SIP.conf config file
 \note  This function reloads all config data, except for
        active peers (with registrations). They will only
@@ -27811,26 +27847,8 @@ static int reload_config(enum channelreloadreason reason)
                }
                ast_mutex_unlock(&authl_lock);
 
-               /* First, destroy all outstanding registry calls */
-               /* This is needed, since otherwise active registry entries will not be destroyed */
-               ASTOBJ_CONTAINER_TRAVERSE(&regl, 1, do {  /* regl is locked */
-
-                               ASTOBJ_RDLOCK(iterator); /* now regl is locked, and the object is also locked */
-                               if (iterator->call) {
-                                       ast_debug(3, "Destroying active SIP dialog for registry %s@%s\n", iterator->username, iterator->hostname);
-                                       /* This will also remove references to the registry */
-                                       dialog_unlink_all(iterator->call);
-                                       iterator->call = dialog_unref(iterator->call, "remove iterator->call from registry traversal");
-                               }
-                               if (iterator->expire > -1) {
-                                       AST_SCHED_DEL_UNREF(sched, iterator->expire, registry_unref(iterator, "reg ptr unref from reload config"));
-                               }
-                               if (iterator->timeout > -1) {
-                                       AST_SCHED_DEL_UNREF(sched, iterator->timeout, registry_unref(iterator, "reg ptr unref from reload config"));
-                               }
-                               ASTOBJ_UNLOCK(iterator);
-               } while(0));
 
+               cleanup_all_regs();
                /* Then, actually destroy users and registry */
                ASTOBJ_CONTAINER_DESTROYALL(&regl, sip_registry_destroy);
                ast_debug(4, "--------------- Done destroying registry list\n");
@@ -30332,6 +30350,7 @@ static int unload_module(void)
        }
        ast_mutex_unlock(&authl_lock);
 
+       sip_epa_unregister_all();
        destroy_escs();
 
        if (default_tls_cfg.certfile) {
@@ -30350,6 +30369,7 @@ static int unload_module(void)
                ast_free(default_tls_cfg.capath);
        }
 
+       cleanup_all_regs();
        ASTOBJ_CONTAINER_DESTROYALL(&regl, sip_registry_destroy);
        ASTOBJ_CONTAINER_DESTROY(&regl);
        ASTOBJ_CONTAINER_DESTROYALL(&submwil, sip_subscribe_mwi_destroy);