static void safe_bridge_destroy(struct ast_bridge *bridge)
{
if (!bridge) {
return;
}
ast_bridge_destroy(bridge, 0);
}
static void wait_bridge_wrapper_destructor(void *obj)
{
struct wait_bridge_wrapper *wrapper = obj;
if (wrapper->bridge) {
ast_bridge_destroy(wrapper->bridge, 0);
}
}
static int manager_bridge_destroy(struct mansession *s, const struct message *m)
{
const char *bridge_uniqueid = astman_get_header(m, "BridgeUniqueid");
struct ast_bridge *bridge;
if (ast_strlen_zero(bridge_uniqueid)) {
astman_send_error(s, m, "BridgeUniqueid must be provided");
return 0;
}
bridge = ast_bridge_find_by_id(bridge_uniqueid);
if (!bridge) {
astman_send_error(s, m, "Specified BridgeUniqueid not found");
return 0;
}
ast_bridge_destroy(bridge, 0);
astman_send_ack(s, m, "Bridge has been destroyed");
return 0;
}
/*!
* \internal
* \since 12.0.0
* \brief Allocate a new holding bridge wrapper with the given bridge name and bridge ID.
*
* \param bridge_name name of the bridge wrapper
* \param bridge the bridge being wrapped
*
* \retval Pointer to the newly allocated holding bridge wrapper
* \retval NULL if allocation failed. The bridge will be destroyed if this function fails.
*/
static struct wait_bridge_wrapper *wait_bridge_wrapper_alloc(const char *bridge_name, struct ast_bridge *bridge)
{
struct wait_bridge_wrapper *bridge_wrapper;
bridge_wrapper = ao2_alloc_options(sizeof(*bridge_wrapper) + strlen(bridge_name) + 1,
wait_bridge_wrapper_destructor, AO2_ALLOC_OPT_LOCK_NOLOCK);
if (!bridge_wrapper) {
ast_bridge_destroy(bridge, 0);
return NULL;
}
strcpy(bridge_wrapper->name, bridge_name);
bridge_wrapper->bridge = bridge;
if (!ao2_link(wait_bridge_wrappers, bridge_wrapper)) {
ao2_cleanup(bridge_wrapper);
return NULL;
}
return bridge_wrapper;
}
/*! \brief Internal built in feature for attended transfers */
static int feature_attended_transfer(struct ast_bridge *bridge, struct ast_bridge_channel *bridge_channel, void *hook_pvt)
{
char exten[AST_MAX_EXTENSION] = "";
struct ast_channel *chan = NULL;
struct ast_bridge *attended_bridge = NULL;
struct ast_bridge_features caller_features, called_features;
enum ast_bridge_channel_state attended_bridge_result;
struct ast_bridge_features_attended_transfer *attended_transfer = hook_pvt;
const char *context = (attended_transfer && !ast_strlen_zero(attended_transfer->context) ? attended_transfer->context : bridge_channel->chan->context);
/* Grab the extension to transfer to */
if (!grab_transfer(bridge_channel->chan, exten, sizeof(exten), context)) {
ast_stream_and_wait(bridge_channel->chan, "pbx-invalid", AST_DIGIT_ANY);
ast_bridge_change_state(bridge_channel, AST_BRIDGE_CHANNEL_STATE_WAIT);
return 0;
}
/* Get a channel that is the destination we wish to call */
if (!(chan = dial_transfer(bridge_channel->chan, exten, context))) {
ast_stream_and_wait(bridge_channel->chan, "beeperr", AST_DIGIT_ANY);
ast_bridge_change_state(bridge_channel, AST_BRIDGE_CHANNEL_STATE_WAIT);
return 0;
}
/* Create a bridge to use to talk to the person we are calling */
if (!(attended_bridge = ast_bridge_new(AST_BRIDGE_CAPABILITY_1TO1MIX, 0))) {
ast_hangup(chan);
ast_stream_and_wait(bridge_channel->chan, "beeperr", AST_DIGIT_ANY);
ast_bridge_change_state(bridge_channel, AST_BRIDGE_CHANNEL_STATE_WAIT);
return 0;
}
/* Setup our called features structure so that if they hang up we immediately get thrown out of the bridge */
ast_bridge_features_init(&called_features);
ast_bridge_features_set_flag(&called_features, AST_BRIDGE_FLAG_DISSOLVE);
/* This is how this is going down, we are imparting the channel we called above into this bridge first */
ast_bridge_impart(attended_bridge, chan, NULL, &called_features);
/* Before we join setup a features structure with the hangup option, just in case they want to use DTMF */
ast_bridge_features_init(&caller_features);
ast_bridge_features_enable(&caller_features, AST_BRIDGE_BUILTIN_HANGUP,
(attended_transfer && !ast_strlen_zero(attended_transfer->complete) ? attended_transfer->complete : "*1"), NULL);
ast_bridge_features_hook(&caller_features, (attended_transfer && !ast_strlen_zero(attended_transfer->threeway) ? attended_transfer->threeway : "*2"),
attended_threeway_transfer, NULL);
ast_bridge_features_hook(&caller_features, (attended_transfer && !ast_strlen_zero(attended_transfer->abort) ? attended_transfer->abort : "*3"),
attended_abort_transfer, NULL);
/* But for the caller we want to join the bridge in a blocking fashion so we don't spin around in this function doing nothing while waiting */
attended_bridge_result = ast_bridge_join(attended_bridge, bridge_channel->chan, NULL, &caller_features);
/* Since the above returned the caller features structure is of no more use */
ast_bridge_features_cleanup(&caller_features);
/* Drop the channel we are transferring to out of the above bridge since it has ended */
if ((attended_bridge_result != AST_BRIDGE_CHANNEL_STATE_HANGUP) && !ast_bridge_depart(attended_bridge, chan)) {
/* If the user wants to turn this into a threeway transfer then do so, otherwise they take our place */
if (attended_bridge_result == AST_BRIDGE_CHANNEL_STATE_DEPART) {
/* We want to impart them upon the bridge and just have us return to it as normal */
ast_bridge_impart(bridge, chan, NULL, NULL);
} else {
ast_bridge_impart(bridge, chan, bridge_channel->chan, NULL);
}
} else {
ast_stream_and_wait(bridge_channel->chan, "beeperr", AST_DIGIT_ANY);
ast_bridge_change_state(bridge_channel, AST_BRIDGE_CHANNEL_STATE_WAIT);
}
/* Now that all channels are out of it we can destroy the bridge and the called features structure */
ast_bridge_features_cleanup(&called_features);
ast_bridge_destroy(attended_bridge);
return 0;
}
/*!
* \brief Bridge channels together
* \param s
* \param m
*
* Make sure valid channels were specified,
* send errors if any of the channels could not be found/locked, answer channels if needed,
* create the placeholder channels and grab the other channels
* make the channels compatible, send error if we fail doing so
* setup the bridge thread object and start the bridge.
*
* \retval 0
*/
static int action_bridge(struct mansession *s, const struct message *m)
{
const char *channela = astman_get_header(m, "Channel1");
const char *channelb = astman_get_header(m, "Channel2");
enum play_tone_action playtone = parse_playtone(astman_get_header(m, "Tone"));
RAII_VAR(struct ast_channel *, chana, NULL, ao2_cleanup);
RAII_VAR(struct ast_channel *, chanb, NULL, ao2_cleanup);
const char *chana_exten;
const char *chana_context;
int chana_priority;
const char *chanb_exten;
const char *chanb_context;
int chanb_priority;
struct ast_bridge *bridge;
char buf[256];
RAII_VAR(struct ast_features_xfer_config *, xfer_cfg_a, NULL, ao2_cleanup);
RAII_VAR(struct ast_features_xfer_config *, xfer_cfg_b, NULL, ao2_cleanup);
/* make sure valid channels were specified */
if (ast_strlen_zero(channela) || ast_strlen_zero(channelb)) {
astman_send_error(s, m, "Missing channel parameter in request");
return 0;
}
ast_debug(1, "Performing Bridge action on %s and %s\n", channela, channelb);
/* Start with chana */
chana = ast_channel_get_by_name_prefix(channela, strlen(channela));
if (!chana) {
snprintf(buf, sizeof(buf), "Channel1 does not exist: %s", channela);
astman_send_error(s, m, buf);
return 0;
}
ast_channel_lock(chana);
xfer_cfg_a = ast_get_chan_features_xfer_config(chana);
chana_exten = ast_strdupa(ast_channel_exten(chana));
chana_context = ast_strdupa(ast_channel_context(chana));
chana_priority = ast_channel_priority(chana);
if (!ast_test_flag(ast_channel_flags(chana), AST_FLAG_IN_AUTOLOOP)) {
chana_priority++;
}
ast_channel_unlock(chana);
chanb = ast_channel_get_by_name_prefix(channelb, strlen(channelb));
if (!chanb) {
snprintf(buf, sizeof(buf), "Channel2 does not exist: %s", channelb);
astman_send_error(s, m, buf);
return 0;
}
ast_channel_lock(chanb);
xfer_cfg_b = ast_get_chan_features_xfer_config(chanb);
chanb_exten = ast_strdupa(ast_channel_exten(chanb));
chanb_context = ast_strdupa(ast_channel_context(chanb));
chanb_priority = ast_channel_priority(chanb);
if (!ast_test_flag(ast_channel_flags(chanb), AST_FLAG_IN_AUTOLOOP)) {
chanb_priority++;
}
ast_channel_unlock(chanb);
bridge = ast_bridge_basic_new();
if (!bridge) {
astman_send_error(s, m, "Unable to create bridge\n");
return 0;
}
ast_bridge_set_after_go_on(chana, chana_context, chana_exten, chana_priority, NULL);
if (ast_bridge_add_channel(bridge, chana, NULL, playtone & PLAYTONE_CHANNEL1, xfer_cfg_a ? xfer_cfg_a->xfersound : NULL)) {
snprintf(buf, sizeof(buf), "Unable to add Channel1 to bridge: %s", ast_channel_name(chana));
astman_send_error(s, m, buf);
ast_bridge_destroy(bridge, 0);
return 0;
}
ast_bridge_set_after_go_on(chanb, chanb_context, chanb_exten, chanb_priority, NULL);
if (ast_bridge_add_channel(bridge, chanb, NULL, playtone & PLAYTONE_CHANNEL2, xfer_cfg_b ? xfer_cfg_b->xfersound : NULL)) {
snprintf(buf, sizeof(buf), "Unable to add Channel2 to bridge: %s", ast_channel_name(chanb));
astman_send_error(s, m, buf);
ast_bridge_destroy(bridge, 0);
return 0;
}
astman_send_ack(s, m, "Channels have been bridged");
ao2_cleanup(bridge);
return 0;
}
int ast_bridge_call_with_flags(struct ast_channel *chan, struct ast_channel *peer, struct ast_bridge_config *config, unsigned int flags)
{
int res;
struct ast_bridge *bridge;
struct ast_bridge_features chan_features;
struct ast_bridge_features *peer_features;
/* Setup features. */
res = ast_bridge_features_init(&chan_features);
peer_features = ast_bridge_features_new();
if (res || !peer_features) {
ast_bridge_features_destroy(peer_features);
ast_bridge_features_cleanup(&chan_features);
bridge_failed_peer_goto(chan, peer);
return -1;
}
if (pre_bridge_setup(chan, peer, config, &chan_features, peer_features)) {
ast_bridge_features_destroy(peer_features);
ast_bridge_features_cleanup(&chan_features);
bridge_failed_peer_goto(chan, peer);
return -1;
}
/* Create bridge */
bridge = ast_bridge_basic_new();
if (!bridge) {
ast_bridge_features_destroy(peer_features);
ast_bridge_features_cleanup(&chan_features);
bridge_failed_peer_goto(chan, peer);
return -1;
}
ast_bridge_basic_set_flags(bridge, flags);
/* Put peer into the bridge */
if (ast_bridge_impart(bridge, peer, NULL, peer_features,
AST_BRIDGE_IMPART_CHAN_INDEPENDENT | AST_BRIDGE_IMPART_INHIBIT_JOIN_COLP)) {
ast_bridge_destroy(bridge, 0);
ast_bridge_features_cleanup(&chan_features);
bridge_failed_peer_goto(chan, peer);
return -1;
}
/* Join bridge */
ast_bridge_join(bridge, chan, NULL, &chan_features, NULL,
AST_BRIDGE_JOIN_PASS_REFERENCE | AST_BRIDGE_JOIN_INHIBIT_JOIN_COLP);
/*
* If the bridge was broken for a hangup that isn't real, then
* don't run the h extension, because the channel isn't really
* hung up. This should really only happen with
* AST_SOFTHANGUP_ASYNCGOTO.
*/
res = -1;
ast_channel_lock(chan);
if (ast_channel_softhangup_internal_flag(chan) & AST_SOFTHANGUP_ASYNCGOTO) {
res = 0;
}
ast_channel_unlock(chan);
ast_bridge_features_cleanup(&chan_features);
if (res && config->end_bridge_callback) {
config->end_bridge_callback(config->end_bridge_callback_data);
}
return res;
}
