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SipStackComm.hpp
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538 lines (474 loc) · 13.2 KB
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/*
* Copyright (C) 2012 Yee Young Han <websearch@naver.com> (http://blog.naver.com/websearch)
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/**
* @ingroup SipStack
* @brief SIP stack 에 SIP 메시지가 존재하지 않으면 SIP stack 에 SIP 메시지를 저장하고 SIP 메시지를 네트워크로 전송한다.
* @param pclsMessage SIP 메시지 저장 구조체
* @returns 성공하면 true 를 리턴하고 실패하면 false 를 리턴한다.
*/
bool CSipStack::SendSipMessage( CSipMessage * pclsMessage )
{
if( pclsMessage == NULL ) return false;
if( m_clsSetup.m_bStateful )
{
CheckSipMessage( pclsMessage );
++pclsMessage->m_iUseCount;
if( pclsMessage->IsRequest() )
{
if( pclsMessage->IsMethod( SIP_METHOD_INVITE ) || pclsMessage->IsMethod( SIP_METHOD_ACK ) )
{
if( m_clsICT.Insert( pclsMessage ) )
{
Send( pclsMessage, false );
--pclsMessage->m_iUseCount;
return true;
}
}
else
{
if( m_clsNICT.Insert( pclsMessage ) )
{
Send( pclsMessage, false );
--pclsMessage->m_iUseCount;
return true;
}
}
}
else
{
if( pclsMessage->IsMethod( SIP_METHOD_INVITE ) )
{
if( m_clsIST.Insert( pclsMessage ) )
{
Send( pclsMessage, false );
--pclsMessage->m_iUseCount;
return true;
}
}
else
{
if( m_clsNIST.Insert( pclsMessage ) )
{
Send( pclsMessage, false );
--pclsMessage->m_iUseCount;
return true;
}
}
}
delete pclsMessage;
}
else
{
Send( pclsMessage, false );
if( pclsMessage->m_iUseCount == 0 )
{
delete pclsMessage;
}
return true;
}
return false;
}
/**
* @ingroup SipStack
* @brief 네트워크에서 수신된 SIP 메시지를 SIP stack 에 저장하고 callback 메소드를 호출하여 응용에 알려 준다.
* 본 메소드에서 true 를 리턴하면 내부적으로 CSipMessage 메모리를 관리하고 그렇지 않으면 호출한 부분에서 CSipMessage 메모리를 삭제해 주어야 한다.
* @param iThreadId 쓰레드 아이디 ( 0 부터 쓰레드 개수 )
* @param pclsMessage SIP 메시지 저장 구조체
* @returns SIP stack 에 저장하면 true 를 리턴하고 그렇지 않으면 false 를 리턴한다.
*/
bool CSipStack::RecvSipMessage( int iThreadId, CSipMessage * pclsMessage )
{
if( m_clsSetup.m_bStateful )
{
++pclsMessage->m_iUseCount;
if( pclsMessage->IsRequest() )
{
if( pclsMessage->IsMethod( SIP_METHOD_INVITE ) || pclsMessage->IsMethod( SIP_METHOD_ACK ) )
{
if( m_clsIST.Insert( pclsMessage ) )
{
RecvRequest( iThreadId, pclsMessage );
--pclsMessage->m_iUseCount;
return true;
}
}
else
{
if( m_clsNIST.Insert( pclsMessage ) )
{
RecvRequest( iThreadId, pclsMessage );
--pclsMessage->m_iUseCount;
return true;
}
}
}
else
{
if( pclsMessage->IsMethod( SIP_METHOD_INVITE ) )
{
// INVITE 메시지에 대한 CANCEL 메시지가 존재하면 이를 SIP stack 에서 삭제한다.
if( pclsMessage->m_iStatusCode >= 200 )
{
m_clsNICT.DeleteCancel( pclsMessage );
}
if( m_clsICT.Insert( pclsMessage ) )
{
RecvResponse( iThreadId, pclsMessage );
--pclsMessage->m_iUseCount;
return true;
}
}
else
{
if( m_clsNICT.Insert( pclsMessage ) )
{
RecvResponse( iThreadId, pclsMessage );
--pclsMessage->m_iUseCount;
return true;
}
}
}
delete pclsMessage;
}
else
{
++pclsMessage->m_iUseCount;
if( pclsMessage->IsRequest() )
{
RecvRequest( iThreadId, pclsMessage );
}
else
{
RecvResponse( iThreadId, pclsMessage );
}
--pclsMessage->m_iUseCount;
if( pclsMessage->m_iUseCount == 0 )
{
delete pclsMessage;
}
return true;
}
return false;
}
/**
* @brief 네트워크에서 수신한 SIP 메시지를 파싱한 후, SIP stack 에 입력한다.
* @param iThreadId 쓰레드 번호
* @param pszBuf 네트워크에서 수신된 SIP 메시지
* @param iBufLen 네트워크에서 수신된 SIP 메시지의 길이
* @param pszIp IP 주소
* @param iPort 포트 번호
* @param eTransport Transport
* @returns 성공하면 true 를 리턴하고 실패하면 false 를 리턴한다.
*/
bool CSipStack::RecvSipMessage( int iThreadId, const char * pszBuf, int iBufLen, const char * pszIp, unsigned short iPort, ESipTransport eTransport )
{
CSipMessage * pclsMessage = new CSipMessage();
if( pclsMessage == NULL ) return false;
if( pclsMessage->Parse( pszBuf, iBufLen ) == -1 )
{
delete pclsMessage;
return false;
}
if( m_pclsSecurityCallBack )
{
const char * pszUserAgent = pclsMessage->m_strUserAgent.c_str();
bool bDelete = false;
if( m_pclsSecurityCallBack->IsDenyUserAgent( pszUserAgent ) ||
m_pclsSecurityCallBack->IsAllowUserAgent( pszUserAgent ) == false ||
m_pclsSecurityCallBack->IsDenyIp( pszIp ) ||
m_pclsSecurityCallBack->IsAllowIp( pszIp ) == false )
{
bDelete = true;
}
if( bDelete )
{
delete pclsMessage;
return false;
}
}
if( pclsMessage->IsRequest() )
{
pclsMessage->AddIpPortToTopVia( pszIp, iPort );
}
pclsMessage->m_strClientIp = pszIp;
pclsMessage->m_iClientPort = iPort;
pclsMessage->m_eTransport = eTransport;
RecvSipMessage( iThreadId, pclsMessage );
return true;
}
/**
* @ingroup SipStack
* @brief SIP 메시지를 네트워크로 전송한다.
* @param pclsMessage SIP 메시지 저장 구조체
* @param bCheckMessage SIP 메시지를 검사하여서 필수 헤더를 추가/수정하는가?
* @returns 성공하면 true 를 리턴하고 실패하면 false 를 리턴한다.
*/
bool CSipStack::Send( CSipMessage * pclsMessage, bool bCheckMessage )
{
const char * pszIp = NULL;
int iPort = -1;
ESipTransport eTransport = E_SIP_UDP;
if( bCheckMessage )
{
CheckSipMessage( pclsMessage );
}
if( pclsMessage->IsRequest() )
{
SIP_FROM_LIST::iterator itList = pclsMessage->m_clsRouteList.begin();
if( itList == pclsMessage->m_clsRouteList.end() )
{
if( pclsMessage->m_clsReqUri.m_strHost.empty() ) return false;
pszIp = pclsMessage->m_clsReqUri.m_strHost.c_str();
iPort = pclsMessage->m_clsReqUri.m_iPort;
eTransport = pclsMessage->m_clsReqUri.SelectTransport();
}
else
{
pszIp = itList->m_clsUri.m_strHost.c_str();
iPort = itList->m_clsUri.m_iPort;
eTransport = itList->m_clsUri.SelectTransport();
}
pclsMessage->m_eTransport = eTransport;
}
else
{
SIP_VIA_LIST::iterator itViaList = pclsMessage->m_clsViaList.begin();
if( itViaList == pclsMessage->m_clsViaList.end() ) return false;
const char * pszTemp;
pszTemp = SearchSipParameter( itViaList->m_clsParamList, SIP_RPORT );
if( pszTemp )
{
iPort = atoi( pszTemp );
}
else
{
iPort = itViaList->m_iPort;
}
pszIp = SearchSipParameter( itViaList->m_clsParamList, SIP_RECEIVED );
if( pszIp == NULL )
{
pszIp = itViaList->m_strHost.c_str();
}
pszTemp = SearchSipParameter( itViaList->m_clsParamList, SIP_TRANSPORT );
if( pszTemp )
{
if( !strcasecmp( pszTemp, SIP_TRANSPORT_TCP ) )
{
eTransport = E_SIP_TCP;
}
else if( !strcasecmp( pszTemp, SIP_TRANSPORT_TLS ) )
{
eTransport = E_SIP_TLS;
}
}
else
{
const char * pszTransport = itViaList->m_strTransport.c_str();
if( !strcasecmp( pszTransport, SIP_TRANSPORT_TCP ) )
{
eTransport = E_SIP_TCP;
}
else if( !strcasecmp( pszTransport, SIP_TRANSPORT_TLS ) )
{
eTransport = E_SIP_TLS;
}
}
}
if( iPort <= 0 ) iPort = 5060;
if( pszIp[0] == '\0' ) return false;
if( pclsMessage->m_strPacket.empty() )
{
if( pclsMessage->MakePacket() == false ) return false;
}
bool bRes = false;
if( eTransport == E_SIP_UDP )
{
m_clsUdpSendMutex.acquire();
bRes = UdpSend( m_hUdpSocket, pclsMessage->m_strPacket.c_str(), (int)pclsMessage->m_strPacket.length(), pszIp, iPort );
m_clsUdpSendMutex.release();
CLog::Print( LOG_NETWORK, "UdpSend(%s:%d) [%s]", pszIp, iPort, pclsMessage->m_strPacket.c_str() );
}
else if( eTransport == E_SIP_TCP )
{
Socket hSocket;
if( m_clsTcpSocketMap.Select( pszIp, iPort, hSocket ) )
{
SipTcpSend( hSocket, pszIp, iPort, pclsMessage, m_clsSetup.m_bUseContactListenPort ? m_clsSetup.m_iLocalTcpPort : 0 );
}
else
{
bRes = StartSipTcpClientThread( this, pszIp, iPort, pclsMessage );
}
}
else if( eTransport == E_SIP_TLS )
{
#ifdef USE_TLS
if( m_clsTlsSocketMap.SendTls( pszIp, iPort, pclsMessage, m_clsSetup.m_bUseContactListenPort ? m_clsSetup.m_iLocalTlsPort : 0 ) )
{
bRes = true;
}
else
{
bRes = StartSipTlsClientThread( this, pszIp, iPort, pclsMessage );
}
#else
CLog::Print( LOG_ERROR, "TLS is not supported. rebuild with USE_TLS option" );
#endif
}
return bRes;
}
/**
* @ingroup SipStack
* @brief SIP 세션으로 문자열을 전송한다.
* @param pszMessage 전송할 문자열
* @param pszIp 목적지 IP 주소
* @param iPort 목적지 포트 번호
* @param eTransport 프로토콜
* @returns 성공하면 true 를 리턴하고 실패하면 false 를 리턴한다.
*/
bool CSipStack::Send( const char * pszMessage, const char * pszIp, unsigned short iPort, ESipTransport eTransport )
{
if( pszMessage == NULL || pszIp == NULL ) return false;
bool bRes = false;
int iMessageSize = (int)strlen( pszMessage );
if( eTransport == E_SIP_UDP )
{
m_clsUdpSendMutex.acquire();
bRes = UdpSend( m_hUdpSocket, pszMessage, iMessageSize, pszIp, iPort );
m_clsUdpSendMutex.release();
}
else if( eTransport == E_SIP_TCP )
{
Socket hSocket;
if( m_clsTcpSocketMap.Select( pszIp, iPort, hSocket ) )
{
if( TcpSend( hSocket, pszMessage, iMessageSize ) == iMessageSize )
{
bRes = true;
}
}
}
else if( eTransport == E_SIP_TLS )
{
#ifdef USE_TLS
bRes = m_clsTlsSocketMap.SendTls( pszIp, iPort, pszMessage, iMessageSize );
#else
CLog::Print( LOG_ERROR, "TLS is not supported. rebuild with USE_TLS option" );
#endif
}
return bRes;
}
/**
* @ingroup SipStack
* @brief 전송할 SIP 메시지에서 필요한 헤더가 존재하지 않을 경우 default 헤더를 저장한다.
* @param pclsMessage 전송할 SIP 메시지
*/
void CSipStack::CheckSipMessage( CSipMessage * pclsMessage )
{
if( pclsMessage->IsRequest() )
{
if( pclsMessage->m_clsViaList.size() == 0 )
{
int iPort = m_clsSetup.GetLocalPort( pclsMessage->m_eTransport );
if( iPort == 0 ) iPort = 5060;
pclsMessage->AddVia( m_clsSetup.m_strLocalIp.c_str(), iPort );
}
}
if( pclsMessage->m_strSipVersion.empty() )
{
pclsMessage->m_strSipVersion = SIP_VERSION;
}
if( pclsMessage->m_clsContactList.size() == 0 )
{
ESipTransport eTransport = E_SIP_UDP;
if( pclsMessage->IsRequest() )
{
SIP_FROM_LIST::iterator itList = pclsMessage->m_clsRouteList.begin();
if( itList == pclsMessage->m_clsRouteList.end() )
{
eTransport = pclsMessage->m_clsReqUri.SelectTransport();
}
else
{
eTransport = itList->m_clsUri.SelectTransport();
}
}
else
{
SIP_VIA_LIST::iterator itViaList = pclsMessage->m_clsViaList.begin();
if( itViaList != pclsMessage->m_clsViaList.end() )
{
const char * pszTemp;
pszTemp = SearchSipParameter( itViaList->m_clsParamList, SIP_TRANSPORT );
if( pszTemp == NULL )
{
pszTemp = itViaList->m_strTransport.c_str();
}
if( pszTemp )
{
if( !strcasecmp( pszTemp, SIP_TRANSPORT_TCP ) )
{
eTransport = E_SIP_TCP;
}
else if( !strcasecmp( pszTemp, SIP_TRANSPORT_TLS ) )
{
eTransport = E_SIP_TLS;
}
}
}
}
CSipFrom clsContact;
clsContact.m_clsUri.m_strProtocol = SipGetProtocol( eTransport );
if( pclsMessage->IsRequest() )
{
clsContact.m_clsUri.m_strUser = pclsMessage->m_clsFrom.m_clsUri.m_strUser;
}
else
{
clsContact.m_clsUri.m_strUser = pclsMessage->m_clsTo.m_clsUri.m_strUser;
}
clsContact.m_clsUri.m_strHost = m_clsSetup.m_strLocalIp;
if( eTransport == E_SIP_UDP )
{
clsContact.m_clsUri.m_iPort = m_clsSetup.m_iLocalUdpPort;
}
else if( eTransport == E_SIP_TCP )
{
clsContact.m_clsUri.m_iPort = m_clsSetup.m_iLocalTcpPort;
}
else if( eTransport == E_SIP_TLS )
{
clsContact.m_clsUri.m_iPort = m_clsSetup.m_iLocalTlsPort;
}
clsContact.m_clsUri.InsertTransport( eTransport );
pclsMessage->m_clsContactList.push_back( clsContact );
}
if( m_clsSetup.m_strUserAgent.empty() )
{
pclsMessage->m_strUserAgent = SIP_USER_AGENT;
}
else
{
pclsMessage->m_strUserAgent = m_clsSetup.m_strUserAgent;
}
if( pclsMessage->m_iMaxForwards == -1 )
{
pclsMessage->m_iMaxForwards = SIP_MAX_FORWARDS;
}
pclsMessage->m_bUseCompact = m_clsSetup.m_bUseSipCompactForm;
}