int manager_bridging_init(void)
{
int ret = 0;
struct stasis_topic *manager_topic;
struct stasis_topic *bridge_topic;
if (bridge_state_router) {
/* Already initialized */
return 0;
}
ast_register_cleanup(manager_bridging_cleanup);
manager_topic = ast_manager_get_topic();
if (!manager_topic) {
return -1;
}
bridge_topic = ast_bridge_topic_all_cached();
if (!bridge_topic) {
return -1;
}
topic_forwarder = stasis_forward_all(bridge_topic, manager_topic);
if (!topic_forwarder) {
return -1;
}
bridge_state_router = ast_manager_get_message_router();
if (!bridge_state_router) {
return -1;
}
ret |= stasis_message_router_add_cache_update(bridge_state_router,
ast_bridge_snapshot_type(), bridge_snapshot_update, NULL);
ret |= stasis_message_router_add(bridge_state_router,
ast_bridge_merge_message_type(), bridge_merge_cb, NULL);
ret |= stasis_message_router_add(bridge_state_router,
ast_channel_entered_bridge_type(), channel_enter_cb, NULL);
ret |= stasis_message_router_add(bridge_state_router,
ast_channel_left_bridge_type(), channel_leave_cb, NULL);
ret |= ast_manager_register_xml_core("BridgeList", 0, manager_bridges_list);
ret |= ast_manager_register_xml_core("BridgeInfo", 0, manager_bridge_info);
ret |= ast_manager_register_xml_core("BridgeDestroy", 0, manager_bridge_destroy);
ret |= ast_manager_register_xml_core("BridgeKick", 0, manager_bridge_kick);
/* If somehow we failed to add any routes, just shut down the whole
* thing and fail it.
*/
if (ret) {
manager_bridging_cleanup();
return -1;
}
return 0;
}
static int manager_bridge_info(struct mansession *s, const struct message *m)
{
const char *id = astman_get_header(m, "ActionID");
const char *bridge_uniqueid = astman_get_header(m, "BridgeUniqueid");
RAII_VAR(struct ast_str *, id_text, ast_str_create(128), ast_free);
RAII_VAR(struct stasis_message *, msg, NULL, ao2_cleanup);
RAII_VAR(struct ast_str *, bridge_info, NULL, ast_free);
struct ast_bridge_snapshot *snapshot;
struct bridge_list_data list_data;
if (!id_text) {
astman_send_error(s, m, "Internal error");
return -1;
}
if (ast_strlen_zero(bridge_uniqueid)) {
astman_send_error(s, m, "BridgeUniqueid must be provided");
return 0;
}
if (!ast_strlen_zero(id)) {
ast_str_set(&id_text, 0, "ActionID: %s\r\n", id);
}
msg = stasis_cache_get(ast_bridge_cache(), ast_bridge_snapshot_type(), bridge_uniqueid);
if (!msg) {
astman_send_error(s, m, "Specified BridgeUniqueid not found");
return 0;
}
snapshot = stasis_message_data(msg);
bridge_info = ast_manager_build_bridge_state_string(snapshot);
if (!bridge_info) {
astman_send_error(s, m, "Internal error");
return -1;
}
astman_send_listack(s, m, "Bridge channel listing will follow", "start");
list_data.id_text = ast_str_buffer(id_text);
list_data.count = 0;
ao2_callback_data(snapshot->channels, OBJ_NODATA, send_bridge_info_item_cb, s, &list_data);
astman_send_list_complete_start(s, m, "BridgeInfoComplete", list_data.count);
if (!ast_strlen_zero(ast_str_buffer(bridge_info))) {
astman_append(s, "%s", ast_str_buffer(bridge_info));
}
astman_send_list_complete_end(s);
return 0;
}
void ast_ari_bridges_list(struct ast_variable *headers,
struct ast_ari_bridges_list_args *args,
struct ast_ari_response *response)
{
RAII_VAR(struct stasis_cache *, cache, NULL, ao2_cleanup);
RAII_VAR(struct ao2_container *, snapshots, NULL, ao2_cleanup);
RAII_VAR(struct ast_json *, json, NULL, ast_json_unref);
struct ao2_iterator i;
void *obj;
cache = ast_bridge_cache();
if (!cache) {
ast_ari_response_error(
response, 500, "Internal Server Error",
"Message bus not initialized");
return;
}
ao2_ref(cache, +1);
snapshots = stasis_cache_dump(cache, ast_bridge_snapshot_type());
if (!snapshots) {
ast_ari_response_alloc_failed(response);
return;
}
json = ast_json_array_create();
if (!json) {
ast_ari_response_alloc_failed(response);
return;
}
i = ao2_iterator_init(snapshots, 0);
while ((obj = ao2_iterator_next(&i))) {
RAII_VAR(struct stasis_message *, msg, obj, ao2_cleanup);
struct ast_bridge_snapshot *snapshot = stasis_message_data(msg);
struct ast_json *json_bridge = ast_bridge_snapshot_to_json(snapshot, stasis_app_get_sanitizer());
if (!json_bridge || ast_json_array_append(json, json_bridge)) {
ao2_iterator_destroy(&i);
ast_ari_response_alloc_failed(response);
return;
}
}
ao2_iterator_destroy(&i);
ast_ari_response_ok(response, ast_json_ref(json));
}
static void sub_bridge_update_handler(void *data,
struct stasis_subscription *sub,
struct stasis_message *message)
{
RAII_VAR(struct ast_json *, json, NULL, ast_json_unref);
struct stasis_app *app = data;
struct stasis_cache_update *update;
struct ast_bridge_snapshot *new_snapshot;
struct ast_bridge_snapshot *old_snapshot;
const struct timeval *tv;
ast_assert(stasis_message_type(message) == stasis_cache_update_type());
update = stasis_message_data(message);
ast_assert(update->type == ast_bridge_snapshot_type());
new_snapshot = stasis_message_data(update->new_snapshot);
old_snapshot = stasis_message_data(update->old_snapshot);
tv = update->new_snapshot ?
stasis_message_timestamp(update->new_snapshot) :
stasis_message_timestamp(message);
if (!new_snapshot) {
json = simple_bridge_event("BridgeDestroyed", old_snapshot, tv);
} else if (!old_snapshot) {
json = simple_bridge_event("BridgeCreated", new_snapshot, tv);
} else if (new_snapshot && old_snapshot
&& strcmp(new_snapshot->video_source_id, old_snapshot->video_source_id)) {
json = simple_bridge_event("BridgeVideoSourceChanged", new_snapshot, tv);
if (json && !ast_strlen_zero(old_snapshot->video_source_id)) {
ast_json_object_set(json, "old_video_source_id",
ast_json_string_create(old_snapshot->video_source_id));
}
}
if (json) {
app_send(app, json);
}
if (!new_snapshot && old_snapshot) {
unsubscribe(app, "bridge", old_snapshot->uniqueid, 1);
}
}
static int manager_bridges_list(struct mansession *s, const struct message *m)
{
const char *id = astman_get_header(m, "ActionID");
const char *type_filter = astman_get_header(m, "BridgeType");
RAII_VAR(struct ast_str *, id_text, ast_str_create(128), ast_free);
RAII_VAR(struct ao2_container *, bridges, NULL, ao2_cleanup);
struct bridge_list_data list_data;
if (!id_text) {
astman_send_error(s, m, "Internal error");
return -1;
}
if (!ast_strlen_zero(id)) {
ast_str_set(&id_text, 0, "ActionID: %s\r\n", id);
}
bridges = stasis_cache_dump(ast_bridge_cache(), ast_bridge_snapshot_type());
if (!bridges) {
astman_send_error(s, m, "Internal error");
return -1;
}
astman_send_listack(s, m, "Bridge listing will follow", "start");
if (!ast_strlen_zero(type_filter)) {
char *type_filter_dup = ast_strdupa(type_filter);
ao2_callback(bridges, OBJ_MULTIPLE | OBJ_NODATA | OBJ_UNLINK,
filter_bridge_type_cb, type_filter_dup);
}
list_data.id_text = ast_str_buffer(id_text);
list_data.count = 0;
ao2_callback_data(bridges, OBJ_NODATA, send_bridge_list_item_cb, s, &list_data);
astman_send_list_complete_start(s, m, "BridgeListComplete", list_data.count);
astman_send_list_complete_end(s);
return 0;
}
static void bridge_snapshot_update(void *data, struct stasis_subscription *sub,
struct stasis_message *message)
{
RAII_VAR(struct ast_str *, bridge_event_string, NULL, ast_free);
struct stasis_cache_update *update;
struct ast_bridge_snapshot *old_snapshot;
struct ast_bridge_snapshot *new_snapshot;
size_t i;
update = stasis_message_data(message);
ast_assert(ast_bridge_snapshot_type() == update->type);
old_snapshot = stasis_message_data(update->old_snapshot);
new_snapshot = stasis_message_data(update->new_snapshot);
for (i = 0; i < ARRAY_LEN(bridge_monitors); ++i) {
RAII_VAR(struct ast_manager_event_blob *, event, NULL, ao2_cleanup);
event = bridge_monitors[i](old_snapshot, new_snapshot);
if (!event) {
continue;
}
/* If we haven't already, build the channel event string */
if (!bridge_event_string) {
bridge_event_string =
ast_manager_build_bridge_state_string(
new_snapshot ? new_snapshot : old_snapshot);
if (!bridge_event_string) {
return;
}
}
manager_event(event->event_flags, event->manager_event, "%s%s",
ast_str_buffer(bridge_event_string),
event->extra_fields);
}
}
struct stasis_app *app_create(const char *name, stasis_app_cb handler, void *data, enum stasis_app_subscription_model subscription_model)
{
RAII_VAR(struct stasis_app *, app, NULL, ao2_cleanup);
size_t size;
int res = 0;
size_t context_size = strlen("stasis-") + strlen(name) + 1;
char context_name[context_size];
ast_assert(name != NULL);
ast_assert(handler != NULL);
ast_verb(1, "Creating Stasis app '%s'\n", name);
size = sizeof(*app) + strlen(name) + 1;
app = ao2_alloc_options(size, app_dtor, AO2_ALLOC_OPT_LOCK_MUTEX);
if (!app) {
return NULL;
}
app->subscription_model = subscription_model;
app->forwards = ao2_container_alloc_rbtree(AO2_ALLOC_OPT_LOCK_MUTEX,
AO2_CONTAINER_ALLOC_OPT_DUPS_OBJ_REJECT,
forwards_sort, NULL);
if (!app->forwards) {
return NULL;
}
app->topic = stasis_topic_create(name);
if (!app->topic) {
return NULL;
}
app->bridge_router = stasis_message_router_create(ast_bridge_topic_all());
if (!app->bridge_router) {
return NULL;
}
res |= stasis_message_router_add(app->bridge_router,
ast_bridge_merge_message_type(), bridge_merge_handler, app);
res |= stasis_message_router_add(app->bridge_router,
ast_blind_transfer_type(), bridge_blind_transfer_handler, app);
res |= stasis_message_router_add(app->bridge_router,
ast_attended_transfer_type(), bridge_attended_transfer_handler, app);
res |= stasis_message_router_add(app->bridge_router,
stasis_subscription_change_type(), bridge_subscription_change_handler, app);
if (res != 0) {
return NULL;
}
/* Bridge router holds a reference */
ao2_ref(app, +1);
app->router = stasis_message_router_create(app->topic);
if (!app->router) {
return NULL;
}
res |= stasis_message_router_add(app->router,
ast_bridge_snapshot_type(), sub_bridge_update_handler, app);
res |= stasis_message_router_add(app->router,
ast_channel_snapshot_type(), sub_channel_update_handler, app);
res |= stasis_message_router_add_cache_update(app->router,
ast_endpoint_snapshot_type(), sub_endpoint_update_handler, app);
res |= stasis_message_router_add(app->router,
stasis_subscription_change_type(), sub_subscription_change_handler, app);
stasis_message_router_set_formatters_default(app->router,
sub_default_handler, app, STASIS_SUBSCRIPTION_FORMATTER_JSON);
if (res != 0) {
return NULL;
}
/* Router holds a reference */
ao2_ref(app, +1);
strncpy(app->name, name, size - sizeof(*app));
app->handler = handler;
app->data = ao2_bump(data);
/* Create a context, a match-all extension, and a 'h' extension for this application. Note that
* this should only be done if a context does not already exist. */
strcpy(context_name, "stasis-");
strcat(context_name, name);
if (!ast_context_find(context_name)) {
if (!ast_context_find_or_create(NULL, NULL, context_name, "res_stasis")) {
ast_log(LOG_WARNING, "Could not create context '%s' for Stasis application '%s'\n", context_name, name);
} else {
ast_add_extension(context_name, 0, "_.", 1, NULL, NULL, "Stasis", ast_strdup(name), ast_free_ptr, "res_stasis");
ast_add_extension(context_name, 0, "h", 1, NULL, NULL, "NoOp", NULL, NULL, "res_stasis");
}
} else {
ast_log(LOG_WARNING, "Not creating context '%s' for Stasis application '%s' because it already exists\n",
context_name, name);
}
ao2_ref(app, +1);
return app;
}
struct stasis_app *app_create(const char *name, stasis_app_cb handler, void *data)
{
RAII_VAR(struct stasis_app *, app, NULL, ao2_cleanup);
size_t size;
int res = 0;
ast_assert(name != NULL);
ast_assert(handler != NULL);
ast_verb(1, "Creating Stasis app '%s'\n", name);
size = sizeof(*app) + strlen(name) + 1;
app = ao2_alloc_options(size, app_dtor, AO2_ALLOC_OPT_LOCK_MUTEX);
if (!app) {
return NULL;
}
app->forwards = ao2_container_alloc_rbtree(AO2_ALLOC_OPT_LOCK_MUTEX,
AO2_CONTAINER_ALLOC_OPT_DUPS_OBJ_REJECT,
forwards_sort, NULL);
if (!app->forwards) {
return NULL;
}
app->topic = stasis_topic_create(name);
if (!app->topic) {
return NULL;
}
app->bridge_router = stasis_message_router_create(ast_bridge_topic_all());
if (!app->bridge_router) {
return NULL;
}
res |= stasis_message_router_add(app->bridge_router,
ast_bridge_merge_message_type(), bridge_merge_handler, app);
res |= stasis_message_router_add(app->bridge_router,
ast_blind_transfer_type(), bridge_blind_transfer_handler, app);
res |= stasis_message_router_add(app->bridge_router,
ast_attended_transfer_type(), bridge_attended_transfer_handler, app);
res |= stasis_message_router_set_default(app->bridge_router,
bridge_default_handler, app);
if (res != 0) {
return NULL;
}
/* Bridge router holds a reference */
ao2_ref(app, +1);
app->router = stasis_message_router_create(app->topic);
if (!app->router) {
return NULL;
}
res |= stasis_message_router_add_cache_update(app->router,
ast_bridge_snapshot_type(), sub_bridge_update_handler, app);
res |= stasis_message_router_add_cache_update(app->router,
ast_channel_snapshot_type(), sub_channel_update_handler, app);
res |= stasis_message_router_add_cache_update(app->router,
ast_endpoint_snapshot_type(), sub_endpoint_update_handler, app);
res |= stasis_message_router_set_default(app->router,
sub_default_handler, app);
if (res != 0) {
return NULL;
}
/* Router holds a reference */
ao2_ref(app, +1);
strncpy(app->name, name, size - sizeof(*app));
app->handler = handler;
ao2_ref(data, +1);
app->data = data;
ao2_ref(app, +1);
return app;
}
