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freeswitch/src/mod/endpoints/mod_opal/opalh323_backend.cpp

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/*
* opalh323_backend.cpp
*
* Backend for OpalH323 module, implements
* H323 handling via OPAL library
*
* Copyright (c) 2007 Lukasz Zwierko (lzwierko@gmail.com)
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
*
* The Initial Developer of the Original Code is Lukasz Zwierko (lzwierko@gmail.com)
*
* Contributor(s):
*
* $Log: opalh323_backend.cpp,v $
*
* Revision 1.00 2007/10/24 07:29:52 lzwierko
* Initial revision
*/
#include <switch.h>
#include "opalh323_backend.h"
#include <include/h323/h323ep.h>
/**
* Private structre
*/
typedef struct OpalH323Private_s
{
OpalConnection *m_opalConnection; /** pointer to OpalConnection object */
switch_mutex_t *m_mutex; /** mutex for synchonizing access to session object */
switch_caller_profile_t *m_callerProfile; /** caller profile */
} OpalH323Private_t;
static bool OpalH323Private_Create(OpalH323Private_t **o_private, switch_core_session_t *i_session)
{
*o_private = (OpalH323Private_t *)switch_core_session_alloc(i_session, sizeof(OpalH323Private_t));
if(!o_private)
{
assert(0);
return false;
}
if(SWITCH_STATUS_SUCCESS != switch_mutex_init(&tech_pvt->m_mutex, SWITCH_MUTEX_NESTED, switch_core_session_get_pool(i_session))
{
assert(0);
return false;
}
return true;
}
static bool OpalH323Private_Delete(OpalH323Private_t *o_private)
{
switch_mutex_destroy(tech_pvt->m_mutex);
}
/** Default constructor
*
*/
FSOpalManager::FSOpalManager() :
m_isInitialized(false),
m_pH323Endpoint(NULL),
m_pMemoryPool(NULL),
m_pEndpointInterface(NULL),
m_pSessionsHashTable(NULL),
m_pSessionsHashTableMutex(NULL)
{
}
/** Destructor
*
*/
~FSOpalManager::FSOpalManager()
{
/**
* Destroy all allocated resources, if any
*/
if(m_isInitialized)
{
delete m_pH323Endpoint;
switch_mutex_destroy(m_pSessionsHashTableMutex);
switch_core_hash_destroy(m_pSessionsHashTable);
}
}
/**
* Method does real initialization of the manager
*/
bool FSOpalManager::initialize(
char *i_modName,
switch_memory_pool_t *i_memoryPool,
switch_endpoint_interface_t *i_endpointInterface
)
{
bool result = true;
/* check if everything is not initialized */
assert(m_isInitialized);
assert(!m_pH323Endpoint);
assert(!m_pMemoryPool)
assert(!m_pEndpointInterface);
assert(!m_pSessionsHashTable);
/* check input parameters */
assert(i_modName);
assert(i_memoryPool);
assert(i_endpointInterface);
m_pModuleName = i_modName;
m_pMemoryPool = i_memoryPool;
m_pEndpointInterface = i_endpointInterface;
/**
* Create hash table for storing pointers to session objects,
* Each OpalConnection object will retreive it's session object using
* its callToken as a key
*/
if(switch_core_hash_init(&m_pSessionsHashTable,m_pMemoryPool)!=SWITCH_STATUS_SUCCESS)
{
assert(0);
return false;
}
if(switch_mutex_init(&m_pSessionsHashTableMutex,SWITCH_THREAD_MUTEX_UNNESTED,m_pMemoryPool)!=SWITCH_STATUS_SUCCESS)
{
assert(0);
switch_core_hash_destroy(m_pSessionsHashTable);
return false;
}
/* create h323 endpoint */
m_pH323Endpoint = new H323EndPoint(this); ///TODO, replace prefix and signaling port by values from configuration
if(!m_pH323Endpoint)
{
assert(0);
switch_core_hash_destroy(m_pSessionsHashTable);
switch_mutex_destroy(m_pSessionsHashTableMutex);
return false;
}
/**
* To do-> add codecs to capabilities (for call contol)
* m_pH323Endpoint->AddCapability();
*/
m_pH323Endpoint->DisableFastStart(false); ///TODO this should be configurable
m_pH323Endpoint->DisableH245Tunneling(false); ///TODO this should be configurable
///TODO gatekeeper use should be configurable, I think that sevral options should be implemented in config file: use, dont use, use one of specified with priorities, try to reconnect to the topmost...
///TODO m_pH323Endpoint->SetInitialBandwidth(initialBandwidth);
///TODO m_pH323Endpoint->SetVendorIdentifierInfo()
///TODO address should be configurable, should allow creaeing listeners on multiple interfaces
OpalTransportAddress opalTransportAddress("0.0.0.0",1720); //for time being create listener on all ip's and default port
if(!m_pH323Endpoint->StartListeners(opalTransportAddress))
{
assert(0);
swith_core_hash_destroy(m_pSessionsHashTable);
switch_mutex_destroy(m_pSessionsHashTableMutex);
delete m_pH323Endpoint:
return false;
}
/* at this point OPAL is ready to go */
m_isInitialized = true;
return true;
}
switch_core_session_t* FSOpalManager::getSessionToken(PString &i_token)
{
assert(m_pSessionsHashTable);
assert(m_pSessionsHashTableMutex);
return static_cast<switch_core_session_t*>(switch_core_hash_find_locked(m_pSessionsHashTable,*i_token,m_pSessionsHashTableMutex));
}
void FSOpalManager::saveSessionToken(PString &i_token,switch_core_session_t* i_session)
{
assert(m_pSessionsHashTable);
assert(m_pSessionsHashTableMutex);
switch_core_hash_insert_locked(m_pSessionsHashTable,*i_token,i_session,m_pSessionsHashTableMutex);
}
void FSOpalManager::deleteToken(PString &i_token)
{
assert(m_pSessionsHashTable);
assert(m_pSessionsHashTableMutex);
switch_core_hash_delete_locked(m_pSessionsHashTable,*i_token,m_pSessionsHashTableMutex);
}
BOOL FSOpalManager::OnIncomingConnection(
OpalConnection & connection, ///< Connection that is calling
unsigned options, ///< options for new connection (can't use default as overrides will fail)
OpalConnection::StringOptions * stringOptions
)
{
//TODO check if options and stringOptions fields ever apply
retrun OnIncomingConnection(connection);
}
BOOL FSOpalManager::OnIncomingConnection(
OpalConnection & connection, ///< Connection that is calling
unsigned options ///< options for new connection (can't use default as overrides will fail)
)
{
//TODO, check if options field ever applies
retrun OnIncomingConnection(connection);
}
BOOL FSOpalManager::OnIncomingConnection(
OpalConnection & connection ///< Connection that is calling
)
{
/* allocate new session in switch core*/
switch_core_session_t *session = switch_core_session_request(m_pEndpointInterface , NULL);
assert(session);
if(!sesion)
{
///TODO add cause to the connection
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Could not allocate session object?\n");
return FALSE;
}
/* allocate private resources */
OpalH323Private_t *tech_pvt = NULL;
if(!OpalH323Private_Create(&tech_pvt))
{
///TODO add cause to the connection
switch_core_session_destroy(&session);
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Could not allocate private object?\n");
return false;
}
tech_pvt->m_opalConnection = &connection;
/** Save private data in session private data, and save session in hash tabel, under GetToken() key */
switch_core_session_set_private(session,static_cast<void*>(tech_pvt)); ///save private data in session context
/** Before adding this session to sessions hash table,
* lock he mutex so no concurrent
* callback can be runing for this connection
* probably other callbacks are called from this task
* but carfulness wont bite
*/
switch_mutex_lock(tech_pvt->m_mutex);
/** insert connection to hash table */
saveSessionToken(connection.GetToken(),session); ///save pointer to session in hash table, for later retreival
/** Create calling side profile */
tech_pvt->m_callerProfile = switch_caller_profile_new(
switch_core_session_get_pool(session),
*connection.GetRemotePartyName(), /** username */
"default", /** TODO -> this should be configurable by core */
*connection.GetRemotePartyName(), /** caller_id_name */
*connection.GetRemotePartyNumber(), /** caller_id_number */
*connection.GetRemotePartyAddress(), /** network addr */
NULL, /** ANI */
NULL, /** ANI II */
NULL, /** RDNIS */
m_pModuleName, /** source */
NULL, /** TODO -> set context */
*connection.GetCalledDestinationNumber() /** destination_number */
);
if(!tech_pvt->m_callerProfile) /* should never error */
{
deleteSessionToken(connection.GetToken());
switch_mutex_unlock(tech_pvt->m_mutex);
OpalH323Private_Delete(tech_pvt);
switch_core_session_destroy(&session);
assert(0);
return false;
}
/** Set up sessions channel */
switch_channel_t *channel = switch_core_session_get_channel(session);
switch_channel_set_name(channel,*connection.GetToken());
switch_channel_set_caller_profile(channel, tech_pvt->m_callerProfile);
switch_channel_set_state(channel, CS_INIT);
/** Set up codecs for the channel ??? */
/***Mark incoming call as AnsweredPending ??? */
/** lunch thread */
if (switch_core_session_thread_launch(session) != SWITCH_STATUS_SUCCESS)
{
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_CRIT, "Error spawning thread\n");
deleteSessionToken(connection.GetToken());
switch_mutex_unlock(tech_pvt->m_mutex);
OpalH323Private_Delete(tech_pvt);
switch_core_session_destroy(&session);
assert(0);
return false;
}
switch_mutex_unlock(tech_pvt->m_mutex);
/* the connection can be continued!!! */
return TRUE;
}
/**
* FS ON_INIT callback handler
*
*/
switch_status_t FSOpalManager::callback_on_init(switch_core_session_t *io_session)
{
assert(m_isInitialized);
return SWITCH_STATUS_SUCCESS;
}
/**
* FS ON_INIT callback handler
*
*/
switch_status_t FSOpalManager::callback_on_ring(switch_core_session_t *io_session)
{
assert(m_isInitialized);
return SWITCH_STATUS_SUCCESS;
}
/**
* FS ON_EXECUTE callback handler
*
*/
switch_status_t FSOpalManager::callback_on_execute(switch_core_session_t *io_session)
{
assert(m_isInitialized);
return SWITCH_STATUS_SUCCESS;
}
/**
* FS ON_HANGUP callback handler
*
*/
switch_status_t FSOpalManager::callback_on_hangup(switch_core_session_t *io_session)
{
assert(m_isInitialized);
return SWITCH_STATUS_SUCCESS;
}
/**
* FS ON_LOOPBACK callback handler
*
*/
switch_status_t FSOpalManager::callback_on_loopback(switch_core_session_t *io_session)
{
assert(m_isInitialized);
return SWITCH_STATUS_SUCCESS;
}
/**
* FS ON_TRANSMIT callback handler
*
*/
switch_status_t FSOpalManager::callback_on_transmit(switch_core_session_t *io_session)
{
assert(m_isInitialized);
return SWITCH_STATUS_SUCCESS;
}
switch_call_cause_t FSOpalManager::io_outgoing_channel(switch_core_session_t *i_session, switch_caller_profile_t *i_profile, switch_core_session_t **o_newSession, switch_memory_pool_t **o_memPool)
{
assert(m_isInitialized);
return 0;
}
switch_status_t FSOpalManager::io_read_frame(switch_core_session_t *i_session, switch_frame_t **o_frame, int i_timout, switch_io_flag_t i_flag, int i_streamId)
{
assert(m_isInitialized);
return SWITCH_STATUS_SUCCESS;
}
switch_status_t FSOpalManager::io_write_frame(switch_core_session_t *i_session, switch_frame_t *i_frame, int i_timeout, switch_io_flag_t i_flag, int i_streamId)
{
assert(m_isInitialized);
return SWITCH_STATUS_SUCCESS;
}
switch_status_t FSOpalManager::io_kill_channel(switch_core_session_t *i_session, int sig)
{
assert(m_isInitialized);
return SWITCH_STATUS_SUCCESS;
}
switch_status_t FSOpalManager::io_waitfor_read(switch_core_session_t *i_session, int i_ms, int i_streamId)
{
assert(m_isInitialized);
return SWITCH_STATUS_SUCCESS;
}
switch_status_t FSOpalManager::io_waitfor_write(switch_core_session_t *i_session, int i_ms, int i_streamId)
{
assert(m_isInitialized);
return SWITCH_STATUS_SUCCESS;
}
switch_status_t FSOpalManager::io_send_dtmf(switch_core_session_t *i_session, char *i_dtmf)
{
assert(m_isInitialized);
return SWITCH_STATUS_SUCCESS;
}
switch_status_t FSOpalManager::io_receive_message(switch_core_session_t *i_session, switch_core_session_message_t *i_message)
{
assert(m_isInitialized);
OpalH323Private_t* tech_prv = switch_core_session_get_private(i_session);
assert(tech_prv);
switch_mutex_lock(tech_prv->m_mutex);
switch(i_message->message_id)
{
case SWITCH_MESSAGE_REDIRECT_AUDIO:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG "SWITCH_MESSAGE_REDIRECT_AUDIO\n");
break;
case SWITCH_MESSAGE_TRANSMIT_TEXT:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG "SWITCH_MESSAGE_TRANSMIT_TEXT\n");
break;
case SWITCH_MESSAGE_INDICATE_ANSWER:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG "SWITCH_MESSAGE_INDICATE_ANSWER\n");
/* set call answer */
tech_prv->m_opalConnection->AnsweringCall(AnswerCallNow);
break;
case SWITCH_MESSAGE_INDICATE_PROGRESS:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG "SWITCH_MESSAGE_INDICATE_PROGRESS\n");
break;
case SWITCH_MESSAGE_INDICATE_BRIDGE:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG "SWITCH_MESSAGE_INDICATE_BRIDGE\n");
break;
case SWITCH_MESSAGE_INDICATE_UNBRIDGE:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG "SWITCH_MESSAGE_INDICATE_UNBRIDGE\n");
break;
case SWITCH_MESSAGE_INDICATE_TRANSFER:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG "SWITCH_MESSAGE_INDICATE_TRANSFER\n");
break;
case SWITCH_MESSAGE_INDICATE_RINGING:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG "SWITCH_MESSAGE_INDICATE_RINGING\n");
break;
case SWITCH_MESSAGE_INDICATE_MEDIA:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG "SWITCH_MESSAGE_INDICATE_MEDIA\n");
break;
case SWITCH_MESSAGE_INDICATE_NOMEDIA:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG "SWITCH_MESSAGE_INDICATE_NOMEDIA\n");
break;
case SWITCH_MESSAGE_INDICATE_HOLD:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG "SWITCH_MESSAGE_INDICATE_HOLD\n");
break;
case SWITCH_MESSAGE_INDICATE_UNHOLD:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG "SWITCH_MESSAGE_INDICATE_UNHOLD\n");
break;
case SWITCH_MESSAGE_INDICATE_REDIRECT:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG "SWITCH_MESSAGE_INDICATE_REDIRECT\n");
break;
case SWITCH_MESSAGE_INDICATE_REJECT:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG "SWITCH_MESSAGE_INDICATE_REJECT\n");
break;
case SWITCH_MESSAGE_INDICATE_BROADCAST:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG "SWITCH_MESSAGE_INDICATE_BROADCAST\n");
break;
case SWITCH_MESSAGE_INDICATE_MEDIA_REDIRECT:
switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_DEBUG "SWITCH_MESSAGE_INDICATE_MEDIA_REDIRECT\n");
break;
}
switch_mutex_unlock(tech_prv->m_mutex);
return SWITCH_STATUS_SUCCESS;
}
switch_status_t FSOpalManager::io_receive_event(switch_core_session_t *i_session, switch_event_t *i_event)
{
assert(m_isInitialized);
return SWITCH_STATUS_SUCCESS;
}
switch_status_t FSOpalManager::io_state_change(switch_core_session_t *)
{
assert(m_isInitialized);
return SWITCH_STATUS_SUCCESS;
}
switch_status_t FSOpalManager::io_read_video_frame(switch_core_session_t *, switch_frame_t **, int, switch_io_flag_t, int)
{
assert(m_isInitialized);
return SWITCH_STATUS_SUCCESS;
}
switch_status_t FSOpalManager::io_write_video_frame(switch_core_session_t *, switch_frame_t *, int, switch_io_flag_t, int)
{
assert(m_isInitialized);
return SWITCH_STATUS_SUCCESS;
}
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