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sipvoiplink.h 16.69 KiB
/*
* Copyright (C) 2004, 2005, 2006, 2009, 2008, 2009, 2010 Savoir-Faire Linux Inc.
*
* Author: Emmanuel Milou <emmanuel.milou@savoirfairelinux.com>
* Author: Yun Liu <yun.liu@savoirfairelinux.com>
* Author: Pierre-Luc Bacon <pierre-luc.bacon@savoirfairelinux.com>
* Author: Alexandre Savard <alexandre.savard@savoirfairelinux.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Additional permission under GNU GPL version 3 section 7:
*
* If you modify this program, or any covered work, by linking or
* combining it with the OpenSSL project's OpenSSL library (or a
* modified version of that library), containing parts covered by the
* terms of the OpenSSL or SSLeay licenses, Savoir-Faire Linux Inc.
* grants you additional permission to convey the resulting work.
* Corresponding Source for a non-source form of such a combination
* shall include the source code for the parts of OpenSSL used as well
* as that of the covered work.
*/
#ifndef SIPVOIPLINK_H
#define SIPVOIPLINK_H
#include "voiplink.h"
#include "hooks/urlhook.h"
#include "../im/InstantMessaging.h"
//////////////////////////////
/* PJSIP imports */
#include <pjsip.h>
#include <pjlib.h>
#include <pjsip_ua.h>
#include <pjlib-util.h>
#include <pjnath/stun_config.h>
///////////////////////////////
#include <map>
#include <sstream>
class EventThread;
class SIPCall;
#define RANDOM_LOCAL_PORT ((rand() % 27250) + 5250)*2
#define RANDOM_SIP_PORT rand() % 64000 + 1024
// To set the verbosity. From 0 (min) to 6 (max)
#define PJ_LOG_LEVEL 0
#define SipTransportMap std::map<std::string, pjsip_transport*>
/**
* @file sipvoiplink.h
* @brief Specific VoIPLink for SIP (SIP core for incoming and outgoing events).
* This class is based on the singleton design pattern.
* One SIPVoIPLink can handle multiple SIP accounts, but all the SIP accounts have all the same SIPVoIPLink
*/
class SIPVoIPLink : public VoIPLink
{
public:
/**
* Singleton method. Enable to retrieve the unique static instance
* @return SIPVoIPLink* A pointer on the object
*/
static SIPVoIPLink* instance (const AccountID& id);
/**
* Destructor
*/
~SIPVoIPLink();
/* Copy Constructor */
SIPVoIPLink (const SIPVoIPLink& rh);
/* Assignment Operator */
SIPVoIPLink& operator= (const SIPVoIPLink& rh);
/**
* Try to initiate the pjsip engine/thread and set config
* @return bool True if OK
*/
bool init (void);
/**
* Shut the library and clean up
*/
void terminate (void);
/**
* Event listener. Each event send by the call manager is received and handled from here
*/
void getEvent (void);
/**
* Build and send SIP registration request
* @return bool True on success
* false otherwise
*/
int sendRegister (AccountID id);
/**
* Build and send SIP unregistration request
* @return bool True on success
* false otherwise
*/
int sendUnregister (AccountID id);
/**
* Place a new call
* @param id The call identifier
* @param toUrl The Sip address of the recipient of the call
* @return Call* The current call
*/
Call* newOutgoingCall (const CallID& id, const std::string& toUrl);
/**
* Answer the call
* @param id The call identifier
* @return int True on success
*/
bool answer (const CallID& id);
/**
* Hang up the call
* @param id The call identifier * @return bool True on success
*/
bool hangup (const CallID& id);
/**
* Hang up the call
* @param id The call identifier
* @return bool True on success
*/
bool peerHungup (const CallID& id);
/**
* Cancel the call
* @param id The call identifier
* @return bool True on success
*/
bool cancel (const CallID& id);
/**
* Put the call on hold
* @param id The call identifier
* @return bool True on success
*/
bool onhold (const CallID& id);
/**
* Put the call off hold
* @param id The call identifier
* @return bool True on success
*/
bool offhold (const CallID& id);
/**
* Transfer the call
* @param id The call identifier
* @param to The recipient of the transfer
* @return bool True on success
*/
bool transfer (const CallID& id, const std::string& to);
/** Handle the incoming refer msg, not finished yet */
bool transferStep2 (SIPCall* call);
/**
* Refuse the call
* @param id The call identifier
* @return bool True on success
*/
bool refuse (const CallID& id);
/**
* Send DTMF refering to account configuration
* @param id The call identifier
* @param code The char code
* @return bool True on success
*/
bool carryingDTMFdigits (const CallID& id, char code);
/**
* Send Dtmf using SIP INFO message
*/
bool dtmfSipInfo (SIPCall *call, char code);
/**
* Send Dtmf over RTP
*/
bool dtmfOverRtp (SIPCall* call, char code);
/**
* Terminate every call not hangup | brutal | Protected by mutex */
void terminateSIPCall();
/**
* Terminate only one call
*/
void terminateOneCall (const CallID& id);
/**
* Send an outgoing call invite
* @param call The current call
* @return bool True if all is correct
*/
bool SIPOutgoingInvite (SIPCall* call);
/**
* Start a SIP Call
* @param call The current call
* @param subject Undocumented
* @return true if all is correct
*/
bool SIPStartCall (SIPCall* call, const std::string& subject);
/**
* Tell the user that the call was answered
* @param
*/
void SIPCallAnswered (SIPCall *call, pjsip_rx_data *rdata);
/**
* Handling 5XX/6XX error
* @param
*/
void SIPCallServerFailure (SIPCall *call);
/**
* Peer close the connection
* @param
*/
void SIPCallClosed (SIPCall *call);
/**
* The call pointer was released
* If the call was not cleared before, report an error
* @param
*/
void SIPCallReleased (SIPCall *call);
/**
* Handle a re-invite request by the remote peer.
* A re-invite is an invite request inside a dialog.
* When receiving a re-invite, we close the current rtp session and create a new one with the updated information
*/
void handle_reinvite (SIPCall *call);
/**
* SIPCall accessor
* @param id The call identifier
* @return SIPCall* A pointer on SIPCall object
*/
SIPCall* getSIPCall (const CallID& id);
/** when we init the listener, how many times we try to bind a port? */
int _nbTryListenAddr;
/** Increment the number of SIP account connected to this link */
void incrementClients (void) {
_clients++;
}
/** Decrement the number of SIP account connected to this link */
void decrementClients (void);
/**
* Set Recording
* @param id The call identifier
*/
void setRecording (const CallID& id);
/**
* Returning state (true recording)
* @param id The call identifier
*/
bool isRecording (const CallID& id);
/**
* Return the codec protocol used for this call
* @param id The call identifier
*/
std::string getCurrentCodecName();
int inv_session_reinvite (SIPCall *call, std::string direction="");
bool new_ip_to_ip_call (const CallID& id, const std::string& to);
std::string get_useragent_name (const AccountID& id);
/**
* List all the interfaces on the system and return
* a vector list containing their IPV4 address.
* @param void
* @return std::vector<std::string> A std::string vector
* of IPV4 address available on all of the interfaces on
* the system.
*/
std::vector<std::string> getAllIpInterface (void);
/**
* List all the interfaces on the system and return
* a vector list containing their name (eth0, eth0:1 ...).
* @param void
* @return std::vector<std::string> A std::string vector
* of interface name available on all of the interfaces on
* the system.
*/
std::vector<std::string> getAllIpInterfaceByName (void);
/**
* List all the interfaces on the system and return
* a vector list containing their name (eth0, eth0:1 ...).
* @param void
* @return std::vector<std::string> A std::string vector
* of interface name available on all of the interfaces on
* the system.
*/
std::string getInterfaceAddrFromName (std::string ifaceName);
/**
* Initialize the transport selector
* @param transport A transport associated with an account
* @param tp_sel A pointer to receive the transport selector structure
*
* @return pj_status_t PJ_SUCCESS if the structure was successfully initialized
*/
pj_status_t init_transport_selector (pjsip_transport *transport, pjsip_tpselector **tp_sel);
/** * Requests PJSIP library for local IP address, using pj_gethostbyname()
* @param addr* A string to be initialized
*
* @return bool True if addr successfully initialized
*/
bool loadSIPLocalIP (std::string *addr);
/**
* This function unset the transport for a given account. It tests wether the
* associated transport is used by other accounts. If not, it shutdown the transport
* putting its reference counter to zero. PJSIP assumes transport destruction since
* this action can be delayed by ongoing SIP transactions.
*/
void shutdownSipTransport (const AccountID& accountID);
/**
* Send a SIP message to a call identified by its callid
*
* @param The InstantMessaging module which contains formating, parsing and sending method
* @param The Id of the call to send the message to
* @param The actual message to be transmitted
* @param The sender of this message (could be another participant of a conference)
*
* @return True if the message is sent without error, false elsewhere
*/
bool sendTextMessage (sfl::InstantMessaging *module, const std::string& callID, const std::string& message, const std::string& from);
private:
/**
* Constructor
* @param accountID The account identifier
*/
SIPVoIPLink (const AccountID& accountID);
/* The singleton instance */
static SIPVoIPLink* _instance;
/**
* Enable the SIP SRV resolver
* @param endpt The SIP endpoint
* @param p_resv Pointer to receive The DNS resolver instance
*
* @return pj_status_t PJ_SUCCESS on success
*/
pj_status_t enable_dns_srv_resolver (pjsip_endpoint *endpt, pj_dns_resolver ** p_resv);
void busy_sleep (unsigned msec);
/**
* Initialize the PJSIP library
* Must be called before any other calls to the SIP layer
*
* @return bool True on success
*/
bool pjsip_init();
/**
* Delete link-related stuff like calls
*/
bool pjsip_shutdown (void);
pj_status_t stunServerResolve (AccountID id);
/**
* Function used to create a new sip transport or get an existing one from the map.
* The SIP transport is "acquired" according to account's current settings.
* This function should be called before registering an account * @param accountID An account id for which transport is to be set
*
* @return bool True if the account is successfully created or successfully obtained
* from the transport map
*/
bool acquireTransport (const AccountID& accountID);
/**
* Create the default UDP transport according ot Ip2Ip profile settings
*/
bool createDefaultSipUdpTransport();
/**
* Create the default TLS litener using IP2IP_PROFILE settings
*/
void createDefaultSipTlsListener();
/**
* Create the default TLS litener according to account settings.
*/
void createTlsListener (const AccountID& accountID);
/**
* General Sip transport creation method according to the
* transport type specified in account settings
* @param id The account id for which a transport must
* be created.
*/
bool createSipTransport (AccountID id);
/**
* Method to store newly created UDP transport in internal transport map.
* Transports are stored in order to retreive them in case
* several accounts would share the same port number for UDP transprt.
* @param key The transport's port number
* @param transport A pointer to the UDP transport
*/
bool addTransportToMap (std::string key, pjsip_transport* transport);
/**
* Create SIP UDP transport from account's setting
* @param id The account id for which a transport must
* be created.
* @return pj_status_t PJ_SUCCESS on success
*/
int createUdpTransport (AccountID = "");
/**
* Create a TLS transport from the default TLS listener from
* @param id The account id for which a transport must
* be created.
* @return pj_status_t PJ_SUCCESS on success
*/
pj_status_t createTlsTransport (const AccountID& id, std::string remoteAddr);
/**
* Create a UDP transport using stun server to resove public address
* @param id The account id for which a transport must
* be created.
* @return pj_status_t PJ_SUCCESS on success
*/
pj_status_t createAlternateUdpTransport (AccountID id);
/** * UDP Transports are stored in this map in order to retreive them in case
* several accounts would share the same port number.
*/
SipTransportMap _transportMap;
/** For registration use only */
int _regPort;
/** Threading object */
EventThread* _evThread;
ost::Mutex _mutexSIP;
/* Number of SIP accounts connected to the link */
int _clients;
/*
* Get the correct address to use (ie advertised) from
* a uri. The corresponding transport that should be used
* with that uri will be discovered.
*
* @param uri The uri from which we want to discover the address to use
* @param transport The transport to use to discover the address
* @return pj_str_t The extern (public) address
*/
std::string findLocalAddressFromUri (const std::string& uri, pjsip_transport *transport);
/*
* Does the same as findLocalAddressFromUri but returns a port.
* @param uri The uri from which we want to discover the port to use
* @param transport The transport to use to discover the port
* @return int The extern (public) port
*/
int findLocalPortFromUri (const std::string& uri, pjsip_transport *transport);
friend class SIPTest;
};
#endif