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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2013, Digium, Inc.
*
* Jonathan Rose <jrose@digium.com>
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
/*! \file
*
* \brief Parking Core
*
* \author Jonathan Rose <jrose@digium.com>
*/
#include "asterisk.h"
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include "asterisk/_private.h"
#include "asterisk/astobj2.h"
#include "asterisk/pbx.h"
#include "asterisk/bridge.h"
#include "asterisk/parking.h"
#include "asterisk/channel.h"
#include "asterisk/_private.h"
/*! \brief Message type for parked calls */
STASIS_MESSAGE_TYPE_DEFN(ast_parked_call_type);
/*! \brief Topic for parking lots */
static struct stasis_topic *parking_topic;
/*! \brief The container for the parking provider */
static AO2_GLOBAL_OBJ_STATIC(parking_provider);
static void parking_stasis_cleanup(void)
{
STASIS_MESSAGE_TYPE_CLEANUP(ast_parked_call_type);
ao2_cleanup(parking_topic);
parking_topic = NULL;
}
int ast_parking_stasis_init(void)
{
if (STASIS_MESSAGE_TYPE_INIT(ast_parked_call_type)) {
return -1;
}
parking_topic = stasis_topic_create("ast_parking");
if (!parking_topic) {
return -1;
}
ast_register_cleanup(parking_stasis_cleanup);
return 0;
}
struct stasis_topic *ast_parking_topic(void)
{
return parking_topic;
}
/*! \brief Destructor for parked_call_payload objects */
static void parked_call_payload_destructor(void *obj)
{
struct ast_parked_call_payload *park_obj = obj;
ao2_cleanup(park_obj->parkee);
ao2_cleanup(park_obj->retriever);
ast_string_field_free_memory(park_obj);
}
struct ast_parked_call_payload *ast_parked_call_payload_create(enum ast_parked_call_event_type event_type,
struct ast_channel_snapshot *parkee_snapshot, const char *parker_dial_string,
struct ast_channel_snapshot *retriever_snapshot, const char *parkinglot,
unsigned int parkingspace, unsigned long int timeout,
unsigned long int duration)
{
RAII_VAR(struct ast_parked_call_payload *, payload, NULL, ao2_cleanup);
payload = ao2_alloc(sizeof(*payload), parked_call_payload_destructor);
if (!payload) {
return NULL;
}
if (ast_string_field_init(payload, 32)) {
return NULL;
}
payload->event_type = event_type;
ao2_ref(parkee_snapshot, +1);
payload->parkee = parkee_snapshot;
if (retriever_snapshot) {
ao2_ref(retriever_snapshot, +1);
payload->retriever = retriever_snapshot;
}
if (parkinglot) {
ast_string_field_set(payload, parkinglot, parkinglot);
}
if (parker_dial_string) {
ast_string_field_set(payload, parker_dial_string, parker_dial_string);
}
payload->parkingspace = parkingspace;
payload->timeout = timeout;
payload->duration = duration;
/* Bump the ref count by one since RAII_VAR is going to eat one when we leave. */
ao2_ref(payload, +1);
return payload;
}
struct ast_parking_bridge_feature_fn_table *ast_parking_get_bridge_features(void)
{
return (struct ast_parking_bridge_feature_fn_table*)ao2_global_obj_ref(parking_provider);
}
/*! \brief A wrapper around the fn_table to ao2-ify it */
struct parking_provider_wrapper {
struct ast_parking_bridge_feature_fn_table fn_table;
};
int ast_parking_register_bridge_features(struct ast_parking_bridge_feature_fn_table *fn_table)
{
RAII_VAR(struct parking_provider_wrapper *, wrapper,
ao2_global_obj_ref(parking_provider), ao2_cleanup);
if (fn_table->module_version != PARKING_MODULE_VERSION) {
ast_log(AST_LOG_WARNING, "Parking module provided incorrect parking module "
"version: %d (expected: %d)\n", fn_table->module_version, PARKING_MODULE_VERSION);
return -1;
}
if (wrapper) {
ast_log(AST_LOG_WARNING, "Parking provider already registered by %s!\n",
wrapper->fn_table.module_name);
return -1;
}
wrapper = ao2_alloc(sizeof(*wrapper), NULL);
if (!wrapper) {
return -1;
}
wrapper->fn_table = *fn_table;
ao2_global_obj_replace(parking_provider, wrapper);
return 0;
}
int ast_parking_unregister_bridge_features(const char *module_name)
{
RAII_VAR(struct parking_provider_wrapper *, wrapper,
ao2_global_obj_ref(parking_provider), ao2_cleanup);
if (!wrapper) {
ast_log(AST_LOG_WARNING, "No parking provider to unregister\n");
return -1;
}
if (strcmp(wrapper->fn_table.module_name, module_name)) {
ast_log(AST_LOG_WARNING, "%s has not registered the parking provider\n", module_name);
return -1;
}
ao2_global_obj_replace_unref(parking_provider, NULL);
return 0;
}
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