1638 lines
45 KiB
C++
1638 lines
45 KiB
C++
/**
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* mgcpca.cpp
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* This file is part of the YATE Project http://YATE.null.ro
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*
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* Media Gateway Control Protocol - Call Agent - also remote data helper
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* for other protocols
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*
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* Yet Another Telephony Engine - a fully featured software PBX and IVR
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* Copyright (C) 2004-2006 Null Team
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include <yatephone.h>
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#include <yatemgcp.h>
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#include <yatesig.h>
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#include <stdlib.h>
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#include <string.h>
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using namespace TelEngine;
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namespace { // anonymous
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class MGCPCircuit;
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class YMGCPEngine : public MGCPEngine
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{
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public:
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inline YMGCPEngine(const NamedList* params)
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: MGCPEngine(false,0,params)
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{ }
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virtual ~YMGCPEngine();
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virtual bool processEvent(MGCPTransaction* trans, MGCPMessage* msg, void* data);
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};
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class MGCPWrapper : public DataEndpoint
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{
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YCLASS(MGCPWrapper,DataEndpoint)
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public:
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MGCPWrapper(CallEndpoint* conn, const char* media, Message& msg, const char* epId);
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~MGCPWrapper();
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bool sendDTMF(const String& tones);
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void gotDTMF(char tone);
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inline const String& id() const
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{ return m_id; }
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inline const String& ntfyId() const
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{ return m_notify; }
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inline const String& callId() const
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{ return m_master; }
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inline const String& connEp() const
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{ return m_connEp; }
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inline const String& connId() const
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{ return m_connId; }
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inline bool isAudio() const
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{ return m_audio; }
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static MGCPWrapper* find(const CallEndpoint* conn, const String& media);
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static MGCPWrapper* find(const String& id);
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static MGCPWrapper* findNotify(const String& id);
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bool processEvent(MGCPTransaction* tr, MGCPMessage* mm);
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bool processNotify(MGCPTransaction* tr, MGCPMessage* mm, const String& event);
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bool rtpMessage(Message& msg);
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RefPointer<MGCPMessage> sendSync(MGCPMessage* mm, const SocketAddr& address);
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void clearConn();
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protected:
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virtual bool nativeConnect(DataEndpoint* peer);
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private:
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void addParams(MGCPMessage* mm);
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MGCPTransaction* m_tr;
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RefPointer<MGCPMessage> m_msg;
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String m_connId;
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String m_connEp;
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String m_id;
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String m_notify;
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String m_master;
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bool m_audio;
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};
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class MGCPSpan : public SignallingCircuitSpan
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{
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public:
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MGCPSpan(const NamedList& params, const char* name, const MGCPEpInfo& ep);
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virtual ~MGCPSpan();
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inline const String& ntfyId() const
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{ return m_notify; }
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inline const MGCPEndpointId& epId() const
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{ return m_epId; }
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inline MGCPEndpointId& epId()
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{ return m_epId; }
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inline bool operational() const
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{ return m_operational; }
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inline const String& address() const
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{ return m_address; }
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inline const char* version() const
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{ return m_version.null() ? "MGCP 1.0" : m_version.c_str(); }
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inline bool fxo() const
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{ return m_fxo; }
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inline bool fxs() const
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{ return m_fxs; }
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bool ownsId(const String& rqId) const;
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static SignallingComponent* create(const String& type, const NamedList& name);
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static MGCPSpan* findNotify(const String& id);
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bool matchEndpoint(const MGCPEndpointId& ep);
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bool processEvent(MGCPTransaction* tr, MGCPMessage* mm);
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bool processNotify(MGCPTransaction* tr, MGCPMessage* mm, const String& event, const String& requestId);
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bool processRestart(MGCPTransaction* tr, MGCPMessage* mm, const String& method);
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bool processDelete(MGCPTransaction* tr, MGCPMessage* mm, const String& error);
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private:
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bool init(const NamedList& params);
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void clearCircuits();
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MGCPCircuit* findCircuit(const String& epId, const String& rqId = String::empty()) const;
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void operational(bool active);
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void operational(const SocketAddr& address);
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MGCPCircuit** m_circuits;
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unsigned int m_count;
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MGCPEndpointId m_epId;
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bool m_operational;
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bool m_fxo;
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bool m_fxs;
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String m_notify;
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String m_address;
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String m_version;
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};
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class MGCPCircuit : public SignallingCircuit
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{
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public:
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MGCPCircuit(unsigned int code, MGCPSpan* span, const char* id);
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virtual ~MGCPCircuit();
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virtual void* getObject(const String& name) const;
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virtual bool status(Status newStat, bool sync);
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virtual bool updateFormat(const char* format, int direction);
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virtual bool sendEvent(SignallingCircuitEvent::Type type, NamedList* params);
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inline const String& epId() const
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{ return m_epId; }
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inline const String& ntfyId() const
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{ return m_notify; }
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inline const String& connId() const
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{ return m_connId; }
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inline bool hasRtp() const
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{ return m_rtpId && (m_source || m_consumer); }
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inline MGCPSpan* mySpan()
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{ return static_cast<MGCPSpan*>(span()); }
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inline bool fxo()
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{ return mySpan()->fxo(); }
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inline bool fxs()
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{ return mySpan()->fxs(); }
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inline void needClear()
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{ m_needClear = true; }
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bool processEvent(MGCPTransaction* tr, MGCPMessage* mm);
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bool processNotify(const String& package, const String& event, const String& fullName);
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void processDelete(MGCPMessage* mm, const String& error);
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void clearConn(bool force = false);
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private:
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MGCPMessage* message(const char* cmd);
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bool sendAsync(MGCPMessage* mm);
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RefPointer<MGCPMessage> sendSync(MGCPMessage* mm);
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bool sendRequest(const char* sigReq, const char* reqEvt = 0, const char* digitMap = 0);
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bool enqueueEvent(SignallingCircuitEvent::Type type, const char* name, const char* dtmf = 0);
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void cleanupRtp();
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bool createRtp();
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bool startRtp();
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bool setupConn();
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String m_epId;
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Status m_statusReq;
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String m_notify;
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// Connection data
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String m_connId;
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String m_callId;
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// Local RTP related data
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RefPointer<DataSource> m_source;
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RefPointer<DataConsumer> m_consumer;
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String m_rtpId;
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String m_localIp;
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int m_localPort;
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int m_sdpSession;
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int m_sdpVersion;
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// Remote (MGCP GW side) RTP data
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String m_remoteIp;
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int m_remotePort;
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int m_remotePayload;
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const char* m_payloads;
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bool m_needClear;
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// Synchronous transaction data
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MGCPTransaction* m_tr;
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RefPointer<MGCPMessage> m_msg;
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};
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class RtpHandler : public MessageHandler
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{
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public:
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RtpHandler(unsigned int prio) : MessageHandler("chan.rtp",prio) { }
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virtual bool received(Message &msg);
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};
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class SdpHandler : public MessageHandler
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{
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public:
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SdpHandler(unsigned int prio) : MessageHandler("chan.sdp",prio) { }
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virtual bool received(Message &msg);
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};
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class DTMFHandler : public MessageHandler
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{
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public:
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DTMFHandler() : MessageHandler("chan.dtmf",150) { }
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virtual bool received(Message &msg);
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};
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class MGCPPlugin : public Module
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{
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public:
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MGCPPlugin();
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virtual ~MGCPPlugin();
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virtual void initialize();
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virtual void statusParams(String& str);
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virtual void statusDetail(String& str);
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};
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YSIGFACTORY2(MGCPSpan);
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static const char* s_payloads = "0 8";
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static YMGCPEngine* s_engine = 0;
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static MGCPEndpoint* s_endpoint = 0;
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static String s_defaultEp;
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static MGCPPlugin splugin;
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static ObjList s_wrappers;
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static ObjList s_spans;
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static Mutex s_mutex(false,"MGCP-CA");
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// Copy one parameter (if present) with new name
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static bool copyRename(NamedList& dest, const char* dname, const NamedList& src, const String& sname)
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{
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if (!sname)
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return false;
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const NamedString* value = src.getParam(sname);
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if (!value)
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return false;
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dest.addParam(dname,*value);
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return true;
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}
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// Increment the number at the end of a name by an offset
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static bool tailIncrement(String& name, unsigned int offs)
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{
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Regexp r("\\([0-9]\\+\\)@");
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if (name.matches(r)) {
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int pos = name.matchOffset(1);
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unsigned int len = name.matchLength(1);
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String num(offs + name.matchString(1).toInteger(0,10));
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while (num.length() < len)
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num = "0" + num;
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name = name.substr(0,pos) + num + name.substr(pos + len);
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return true;
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}
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return false;
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}
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YMGCPEngine::~YMGCPEngine()
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{
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s_engine = 0;
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s_endpoint = 0;
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}
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// Process all events of this engine, forward them to wrappers if found
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bool YMGCPEngine::processEvent(MGCPTransaction* trans, MGCPMessage* msg, void* data)
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{
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MGCPWrapper* wrap = YOBJECT(MGCPWrapper,static_cast<GenObject*>(data));
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MGCPSpan* span = YOBJECT(MGCPSpan,static_cast<GenObject*>(data));
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MGCPCircuit* circ = YOBJECT(MGCPCircuit,static_cast<GenObject*>(data));
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Debug(this,DebugAll,"YMGCPEngine::processEvent(%p,%p,%p) wrap=%p span=%p circ=%p [%p]",
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trans,msg,data,wrap,span,circ,this);
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if (!trans)
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return false;
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if (wrap)
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return wrap->processEvent(trans,msg);
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if (span)
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return span->processEvent(trans,msg);
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if (circ)
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return circ->processEvent(trans,msg);
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if (!msg)
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return false;
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if (!data && !trans->outgoing() && msg->isCommand()) {
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while (msg->name() == "NTFY") {
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const String* rqId = msg->params.getParam("x");
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const String* event = msg->params.getParam("o");
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if (null(rqId))
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trans->setResponse(538,"Missing request-id");
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else if (null(event))
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trans->setResponse(538,"Missing observed events");
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else if (*rqId == "0") {
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// persistent notification
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Debug(this,DebugInfo,"NTFY '%s' from '%s'",
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c_str(event),
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msg->endpointId().c_str());
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MGCPEndpointId id(msg->endpointId());
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bool ok = false;
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if (id.valid()) {
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s_mutex.lock();
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ListIterator iter(s_spans);
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while ((span = static_cast<MGCPSpan*>(iter.get()))) {
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if (span->matchEndpoint(id)) {
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s_mutex.unlock();
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ok = span->processNotify(trans,msg,*event,*rqId) || ok;
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s_mutex.lock();
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}
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}
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s_mutex.unlock();
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}
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if (ok) {
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trans->setResponse(200,"OK");
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return true;
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}
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break;
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}
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else {
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bool ok = false;
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wrap = MGCPWrapper::findNotify(*rqId);
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if (wrap)
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ok = wrap->processNotify(trans,msg,*event);
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else {
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span = MGCPSpan::findNotify(*rqId);
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if (span)
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ok = span->processNotify(trans,msg,*event,*rqId);
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else {
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trans->setResponse(538,"Unknown request-id");
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return true;
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}
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}
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if (ok)
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trans->setResponse(200,"OK");
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else
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trans->setResponse(539,"Unsupported parameter");
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}
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return true;
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}
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if (msg->name() == "RSIP") {
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const String* method = msg->params.getParam("rm");
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Debug(this,DebugInfo,"RSIP '%s' from '%s'",
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c_str(method),msg->endpointId().c_str());
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MGCPEndpointId id(msg->endpointId());
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bool ok = false;
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if (id.valid()) {
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if (!method)
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method = &String::empty();
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s_mutex.lock();
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ListIterator iter(s_spans);
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while ((span = static_cast<MGCPSpan*>(iter.get()))) {
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if (span->matchEndpoint(id)) {
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s_mutex.unlock();
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ok = span->processRestart(trans,msg,*method) || ok;
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s_mutex.lock();
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}
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}
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s_mutex.unlock();
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}
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if (ok) {
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trans->setResponse(200);
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return true;
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}
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}
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else if (msg->name() == "DLCX") {
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const String* error = msg->params.getParam("e");
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Debug(this,DebugInfo,"DLCX '%s' from '%s'",
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c_str(error),msg->endpointId().c_str());
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MGCPEndpointId id(msg->endpointId());
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if (id.valid()) {
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if (!error)
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error = &String::empty();
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s_mutex.lock();
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ListIterator iter(s_spans);
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while ((span = static_cast<MGCPSpan*>(iter.get()))) {
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if (span->matchEndpoint(id)) {
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s_mutex.unlock();
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if (span->processDelete(trans,msg,*error)) {
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trans->setResponse(200);
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return true;
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}
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s_mutex.lock();
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}
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}
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s_mutex.unlock();
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}
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}
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Debug(this,DebugMild,"Unhandled '%s' from '%s'",
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msg->name().c_str(),msg->endpointId().c_str());
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}
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return false;
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}
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MGCPWrapper::MGCPWrapper(CallEndpoint* conn, const char* media, Message& msg, const char* epId)
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: DataEndpoint(conn,media),
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m_tr(0), m_connEp(epId)
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{
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Debug(&splugin,DebugAll,"MGCPWrapper::MGCPWrapper(%p,'%s','%s') [%p]",
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conn,media,epId,this);
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m_id = "mgcp/";
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m_id << (unsigned int)::random();
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if (conn)
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m_master = conn->id();
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m_master = msg.getValue("id",(conn ? conn->id().c_str() : (const char*)0));
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m_audio = (name() == "audio");
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s_mutex.lock();
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s_wrappers.append(this);
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// setupRTP(localip,rtcp);
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s_mutex.unlock();
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}
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MGCPWrapper::~MGCPWrapper()
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{
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Debug(&splugin,DebugAll,"MGCPWrapper::~MGCPWrapper() '%s' [%p]",
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name().c_str(),this);
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s_mutex.lock();
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s_wrappers.remove(this,false);
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if (m_tr) {
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m_tr->userData(0);
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m_tr = 0;
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}
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s_mutex.unlock();
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m_msg = 0;
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clearConn();
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}
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// Process incoming events for this wrapper
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bool MGCPWrapper::processEvent(MGCPTransaction* tr, MGCPMessage* mm)
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{
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Debug(&splugin,DebugAll,"MGCPWrapper::processEvent(%p,%p) [%p]",
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tr,mm,this);
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if (tr == m_tr) {
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if (!mm || (tr->msgResponse())) {
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tr->userData(0);
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m_msg = mm;
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m_tr = 0;
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}
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}
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else if (mm) {
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if (mm->name() == "NTFY") {
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String* event = mm->params.getParam("o");
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if (event && processNotify(tr,mm,*event)) {
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tr->setResponse(200);
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return true;
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}
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}
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}
|
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return false;
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}
|
|
|
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// Process incoming notify events for this wrapper
|
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bool MGCPWrapper::processNotify(MGCPTransaction* tr, MGCPMessage* mm, const String& event)
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{
|
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if (event.null())
|
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return false;
|
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else if (event.find(',') >= 0) {
|
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// Multiple events
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ObjList* l = event.split(',',false);
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bool ok = false;
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for (ObjList* p = l->skipNull(); p; p = p->skipNext())
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ok = processNotify(tr,mm,p->get()->toString()) || ok;
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delete l;
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return ok;
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}
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else {
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Debug(&splugin,DebugStub,"MGCPWrapper::processNotify(%p,%p,'%s') [%p]",
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tr,mm,event.c_str(),this);
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return false;
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}
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return true;
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}
|
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|
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// Process local chan.rtp messages for this wrapper
|
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bool MGCPWrapper::rtpMessage(Message& msg)
|
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{
|
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if (!s_endpoint)
|
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return false;
|
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const char* cmd = "MDCX";
|
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bool extend = false;
|
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bool fini = msg.getBoolValue("terminate");
|
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if (fini) {
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if (m_connId.null())
|
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return true;
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cmd = "DLCX";
|
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}
|
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else if (m_connId.null())
|
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cmd = "CRCX";
|
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MGCPEpInfo* ep = s_endpoint->find(m_connEp);
|
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if (!ep)
|
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return false;
|
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RefPointer<MGCPMessage> mm = new MGCPMessage(s_engine,cmd,ep->toString());
|
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addParams(mm);
|
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String dir = msg.getValue("direction",m_connId.null() ? "bidir" : "");
|
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if (dir == "bidir")
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dir = "sendrecv";
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else if (dir == "send")
|
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dir = "sendonly";
|
|
else if (dir == "receive")
|
|
dir = "recvonly";
|
|
else
|
|
dir.clear();
|
|
if (dir)
|
|
mm->params.addParam("M",dir);
|
|
if (extend && !fini) {
|
|
if (m_connId.null()) {
|
|
copyRename(mm->params,"x-transport",msg,"transport");
|
|
copyRename(mm->params,"x-mediatype",msg,"media");
|
|
}
|
|
copyRename(mm->params,"x-localip",msg,"localip");
|
|
copyRename(mm->params,"x-localport",msg,"localport");
|
|
copyRename(mm->params,"x-remoteip",msg,"remoteip");
|
|
copyRename(mm->params,"x-remoteport",msg,"remoteport");
|
|
copyRename(mm->params,"x-payload",msg,"payload");
|
|
copyRename(mm->params,"x-evpayload",msg,"evpayload");
|
|
copyRename(mm->params,"x-format",msg,"format");
|
|
copyRename(mm->params,"x-direction",msg,"direction");
|
|
copyRename(mm->params,"x-ssrc",msg,"ssrc");
|
|
copyRename(mm->params,"x-drillhole",msg,"drillhole");
|
|
copyRename(mm->params,"x-autoaddr",msg,"autoaddr");
|
|
copyRename(mm->params,"x-anyssrc",msg,"anyssrc");
|
|
}
|
|
mm = sendSync(mm,ep->address);
|
|
if (!mm)
|
|
return false;
|
|
if (m_connId.null())
|
|
m_connId = mm->params.getParam("i");
|
|
if (m_connId.null())
|
|
return false;
|
|
copyRename(msg,"localip",mm->params,"x-localip");
|
|
copyRename(msg,"localport",mm->params,"x-localport");
|
|
msg.setParam("rtpid",id());
|
|
return true;
|
|
}
|
|
|
|
// Delete remote connection if any
|
|
void MGCPWrapper::clearConn()
|
|
{
|
|
if (m_connId.null() || !s_endpoint)
|
|
return;
|
|
MGCPEpInfo* ep = s_endpoint->find(m_connEp);
|
|
if (!ep)
|
|
return;
|
|
MGCPMessage* mm = new MGCPMessage(s_engine,"DLCX",ep->toString());
|
|
addParams(mm);
|
|
s_engine->sendCommand(mm,ep->address);
|
|
}
|
|
|
|
// Populate a MGCP message with basic identification parameters
|
|
void MGCPWrapper::addParams(MGCPMessage* mm)
|
|
{
|
|
if (!mm)
|
|
return;
|
|
if (m_connId)
|
|
mm->params.addParam("I",m_connId);
|
|
if (m_master) {
|
|
String callId;
|
|
callId.hexify((void*)m_master.c_str(),m_master.length(),0,true);
|
|
mm->params.addParam("C",callId);
|
|
}
|
|
}
|
|
|
|
// Send a MGCP message, wait for an answer and return it
|
|
RefPointer<MGCPMessage> MGCPWrapper::sendSync(MGCPMessage* mm, const SocketAddr& address)
|
|
{
|
|
while (m_msg) {
|
|
if (Thread::check(false))
|
|
return 0;
|
|
Thread::msleep(10);
|
|
}
|
|
MGCPTransaction* tr = s_engine->sendCommand(mm,address);
|
|
tr->userData(static_cast<GenObject*>(this));
|
|
m_tr = tr;
|
|
while (m_tr == tr)
|
|
Thread::msleep(10);
|
|
RefPointer<MGCPMessage> tmp = m_msg;
|
|
m_msg = 0;
|
|
if (tmp)
|
|
Debug(&splugin,DebugNote,"MGCPWrapper::sendSync() returning %d '%s' [%p]",
|
|
tmp->code(),tmp->comment().c_str(),this);
|
|
else
|
|
Debug(&splugin,DebugMild,"MGCPWrapper::sendSync() returning NULL [%p]",this);
|
|
return tmp;
|
|
}
|
|
|
|
// Find a wrapper by Call Endpoint and media type
|
|
MGCPWrapper* MGCPWrapper::find(const CallEndpoint* conn, const String& media)
|
|
{
|
|
if (media.null() || !conn)
|
|
return 0;
|
|
Lock lock(s_mutex);
|
|
ObjList* l = &s_wrappers;
|
|
for (; l; l=l->next()) {
|
|
const MGCPWrapper *p = static_cast<const MGCPWrapper *>(l->get());
|
|
if (p && (p->getCall() == conn) && (p->name() == media))
|
|
return const_cast<MGCPWrapper *>(p);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// Find a wrapper by its local ID
|
|
MGCPWrapper* MGCPWrapper::find(const String& id)
|
|
{
|
|
if (id.null())
|
|
return 0;
|
|
Lock lock(s_mutex);
|
|
ObjList* l = &s_wrappers;
|
|
for (; l; l=l->next()) {
|
|
const MGCPWrapper *p = static_cast<const MGCPWrapper *>(l->get());
|
|
if (p && (p->id() == id))
|
|
return const_cast<MGCPWrapper *>(p);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// Find a wrapper by its Notify-ID
|
|
MGCPWrapper* MGCPWrapper::findNotify(const String& id)
|
|
{
|
|
if (id.null())
|
|
return 0;
|
|
Lock lock(s_mutex);
|
|
ObjList* l = &s_wrappers;
|
|
for (; l; l=l->next()) {
|
|
MGCPWrapper* w = static_cast<MGCPWrapper *>(l->get());
|
|
if (w && (w->ntfyId() == id))
|
|
return w;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// Send a DTMF as a sequence of package D events
|
|
bool MGCPWrapper::sendDTMF(const String& tones)
|
|
{
|
|
DDebug(&splugin,DebugInfo,"MGCPWrapper::sendDTMF('%s') [%p]",
|
|
tones.c_str(),this);
|
|
MGCPEpInfo* ep = s_endpoint->find(m_connEp);
|
|
if (!ep)
|
|
return false;
|
|
MGCPMessage* mm = new MGCPMessage(s_engine,"NTFY",ep->toString());
|
|
addParams(mm);
|
|
String tmp;
|
|
for (unsigned int i = 0; i < tones.length(); i++) {
|
|
if (tmp)
|
|
tmp << ",";
|
|
tmp << "D/" << tones.at(i);
|
|
}
|
|
mm->params.setParam("O",tmp);
|
|
return s_engine->sendCommand(mm,ep->address) != 0;
|
|
}
|
|
|
|
void MGCPWrapper::gotDTMF(char tone)
|
|
{
|
|
DDebug(&splugin,DebugInfo,"MGCPWrapper::gotDTMF('%c') [%p]",tone,this);
|
|
if (m_master.null())
|
|
return;
|
|
char buf[2];
|
|
buf[0] = tone;
|
|
buf[1] = 0;
|
|
Message *m = new Message("chan.masquerade");
|
|
m->addParam("id",m_master);
|
|
m->addParam("message","chan.dtmf");
|
|
m->addParam("text",buf);
|
|
m->addParam("detected","mgcp");
|
|
Engine::enqueue(m);
|
|
}
|
|
|
|
// Perform remote bridging if two MGCP endpoints are connected locally
|
|
bool MGCPWrapper::nativeConnect(DataEndpoint* peer)
|
|
{
|
|
MGCPWrapper* other = YOBJECT(MGCPWrapper,peer);
|
|
if (!other)
|
|
return false;
|
|
// check if the other connection is using same endpoint
|
|
if (other->connEp() != m_connEp)
|
|
return false;
|
|
if (other->connId().null()) {
|
|
Debug(&splugin,DebugWarn,"Not bridging to uninitialized %p [%p]",other,this);
|
|
return false;
|
|
}
|
|
Debug(&splugin,DebugNote,"Native bridging to %p [%p]",other,this);
|
|
MGCPEpInfo* ep = s_endpoint->find(m_connEp);
|
|
if (!ep)
|
|
return false;
|
|
MGCPMessage* mm = new MGCPMessage(s_engine,"MDCX",ep->toString());
|
|
addParams(mm);
|
|
mm->params.setParam("Z2",other->connId());
|
|
return s_engine->sendCommand(mm,ep->address) != 0;
|
|
}
|
|
|
|
|
|
// Called by the factory to create MGCP spans
|
|
SignallingComponent* MGCPSpan::create(const String& type, const NamedList& name)
|
|
{
|
|
if (type != "SignallingCircuitSpan")
|
|
return 0;
|
|
const String* spanName = name.getParam("voice");
|
|
if (!spanName)
|
|
spanName = &name;
|
|
if (null(spanName) || !s_endpoint)
|
|
return 0;
|
|
MGCPEpInfo* ep = s_endpoint->findAlias(*spanName);
|
|
if (!ep) {
|
|
DDebug(&splugin,DebugAll,"No endpoint info for span '%s'",spanName->c_str());
|
|
return 0;
|
|
}
|
|
MGCPSpan* span = new MGCPSpan(name,spanName->safe("MGCPSpan"),*ep);
|
|
if (span->init(name))
|
|
return span;
|
|
TelEngine::destruct(span);
|
|
return 0;
|
|
}
|
|
|
|
// Find a span by its Notify-ID
|
|
MGCPSpan* MGCPSpan::findNotify(const String& id)
|
|
{
|
|
if (id.null())
|
|
return 0;
|
|
Lock lock(s_mutex);
|
|
ObjList* l = &s_spans;
|
|
for (; l; l=l->next()) {
|
|
MGCPSpan* s = static_cast<MGCPSpan*>(l->get());
|
|
if (s && s->ownsId(id))
|
|
return s;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
MGCPSpan::MGCPSpan(const NamedList& params, const char* name, const MGCPEpInfo& ep)
|
|
: SignallingCircuitSpan(params.getValue("debugname",name),
|
|
static_cast<SignallingCircuitGroup*>(params.getObject("SignallingCircuitGroup"))),
|
|
m_circuits(0), m_count(0), m_epId(ep), m_operational(false),
|
|
m_fxo(false), m_fxs(false)
|
|
{
|
|
Debug(&splugin,DebugAll,"MGCPSpan::MGCPSpan(%p,'%s') [%p]",
|
|
¶ms,name,this);
|
|
u_int32_t ntfy = (u_int32_t)::random();
|
|
m_notify.hexify(&ntfy,sizeof(ntfy));
|
|
const AnalogLineGroup* analog = YOBJECT(AnalogLineGroup,group());
|
|
if (analog) {
|
|
switch (analog->type()) {
|
|
case AnalogLine::FXO:
|
|
m_fxo = true;
|
|
break;
|
|
case AnalogLine::FXS:
|
|
m_fxs = true;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
s_mutex.lock();
|
|
s_spans.append(this);
|
|
s_mutex.unlock();
|
|
}
|
|
|
|
MGCPSpan::~MGCPSpan()
|
|
{
|
|
Debug(&splugin,DebugAll,"MGCPSpan::~MGCPSpan() '%s' [%p]",
|
|
id().c_str(),this);
|
|
s_mutex.lock();
|
|
s_spans.remove(this,false);
|
|
s_mutex.unlock();
|
|
clearCircuits();
|
|
}
|
|
|
|
// Clear all the circuits in the span
|
|
void MGCPSpan::clearCircuits()
|
|
{
|
|
MGCPCircuit** circuits = m_circuits;
|
|
m_circuits = 0;
|
|
if (!circuits)
|
|
return;
|
|
for (unsigned int i = 0; i < m_count; i++)
|
|
TelEngine::destruct(circuits[i]);
|
|
delete[] circuits;
|
|
}
|
|
|
|
// Initialize the circuits span
|
|
bool MGCPSpan::init(const NamedList& params)
|
|
{
|
|
clearCircuits();
|
|
const String* sect = params.getParam("voice");
|
|
if (!sect)
|
|
sect = params.getParam("basename");
|
|
if (!sect)
|
|
sect = ¶ms;
|
|
int cicStart = params.getIntValue("start");
|
|
if ((cicStart < 0) || !sect)
|
|
return false;
|
|
Configuration cfg(Engine::configFile("mgcpca"));
|
|
const NamedList* config = cfg.getSection("gw " + *sect);
|
|
if (!config) {
|
|
Debug(m_group,DebugWarn,"MGCPSpan('%s'). Failed to find config section [%p]",
|
|
id().safe(),this);
|
|
return false;
|
|
}
|
|
m_count = config->getIntValue("chans",1);
|
|
cicStart += config->getIntValue("offset");
|
|
|
|
if (!m_count)
|
|
return false;
|
|
m_increment = m_count;
|
|
// assume 23 circuits means T1, 30 or 31 circuits means E1
|
|
switch (m_increment) {
|
|
case 23:
|
|
m_increment = 24;
|
|
break;
|
|
case 30:
|
|
case 31:
|
|
m_increment = 32;
|
|
break;
|
|
}
|
|
m_increment = config->getIntValue("increment",m_increment);
|
|
bool clear = config->getBoolValue("clearconn",false);
|
|
m_circuits = new MGCPCircuit*[m_count];
|
|
unsigned int i;
|
|
for (i = 0; i < m_count; i++)
|
|
m_circuits[i] = 0;
|
|
bool ok = true;
|
|
for (i = 0; i < m_count; i++) {
|
|
String name = epId().id();
|
|
if (!tailIncrement(name,i)) {
|
|
Debug(m_group,DebugWarn,"MGCPSpan('%s'). Failed to increment name by %u. Rollback [%p]",
|
|
id().safe(),i,this);
|
|
clearCircuits();
|
|
ok = false;
|
|
break;
|
|
}
|
|
MGCPCircuit* circuit = new MGCPCircuit(cicStart + i,this,name);
|
|
m_circuits[i] = circuit;
|
|
if (!m_group->insert(circuit)) {
|
|
Debug(m_group,DebugWarn,"MGCPSpan('%s'). Failed to create/insert circuit %u. Rollback [%p]",
|
|
id().safe(),cicStart + i,this);
|
|
clearCircuits();
|
|
ok = false;
|
|
break;
|
|
}
|
|
circuit->ref();
|
|
if (clear)
|
|
circuit->needClear();
|
|
}
|
|
return ok;
|
|
}
|
|
|
|
// Set the operational state
|
|
void MGCPSpan::operational(bool active)
|
|
{
|
|
if (active == m_operational)
|
|
return;
|
|
Debug(&splugin,DebugCall,"MGCPSpan '%s' is%s operational [%p]",
|
|
id().c_str(),(active ? "" : " not"),this);
|
|
m_operational = active;
|
|
if (!m_circuits)
|
|
return;
|
|
for (unsigned int i = 0; i < m_count; i++) {
|
|
MGCPCircuit* circuit = m_circuits[i];
|
|
if (circuit)
|
|
circuit->status((active ? SignallingCircuit::Idle : SignallingCircuit::Missing),true);
|
|
}
|
|
}
|
|
|
|
// Set the operational state and copy GW address
|
|
void MGCPSpan::operational(const SocketAddr& address)
|
|
{
|
|
if (address.valid() && address.host())
|
|
m_address = address.host();
|
|
MGCPEpInfo* ep = s_endpoint->find(epId().id());
|
|
if (ep && !(m_operational && ep->address.valid()))
|
|
ep->address = address;
|
|
operational(true);
|
|
}
|
|
|
|
// Check if this span matches an endpoint ID
|
|
bool MGCPSpan::matchEndpoint(const MGCPEndpointId& ep)
|
|
{
|
|
if (ep.port() && (ep.port() != m_epId.port()))
|
|
return false;
|
|
if (ep.host() |= m_epId.host())
|
|
return false;
|
|
if (ep.user() &= m_epId.user())
|
|
return true;
|
|
if (ep.user() == "*")
|
|
return true;
|
|
if (findCircuit(ep.id()))
|
|
return true;
|
|
String tmp = ep.user();
|
|
Regexp r("^\\(.*\\)\\[\\([0-9]\\+\\)-\\([0-9]\\+\\)\\]$");
|
|
if (!(tmp.matches(r) && m_epId.user().startsWith(tmp.matchString(1),false,true)))
|
|
return false;
|
|
int idx = m_epId.user().substr(tmp.matchLength(1)).toInteger(-1,10);
|
|
if (idx < 0)
|
|
return false;
|
|
return (tmp.matchString(2).toInteger(idx+1,10) <= idx) && (idx <= tmp.matchString(3).toInteger(-1,10));
|
|
}
|
|
|
|
// Check if a request Id is for this span or one of its circuits
|
|
bool MGCPSpan::ownsId(const String& rqId) const
|
|
{
|
|
if (ntfyId() == rqId)
|
|
return true;
|
|
for (unsigned int i = 0; i < m_count; i++) {
|
|
MGCPCircuit* circuit = m_circuits[i];
|
|
if (circuit && (circuit->ntfyId() == rqId))
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// Get the circuit associated to a specific endpoint and request Id
|
|
MGCPCircuit* MGCPSpan::findCircuit(const String& epId, const String& rqId) const
|
|
{
|
|
if (!(m_count && m_circuits))
|
|
return 0;
|
|
if (epId.find('@') <= 0)
|
|
return 0;
|
|
bool localId = (rqId != "0") && !rqId.null();
|
|
for (unsigned int i = 0; i < m_count; i++) {
|
|
MGCPCircuit* circuit = m_circuits[i];
|
|
if (!circuit)
|
|
continue;
|
|
if (localId) {
|
|
if (circuit->ntfyId() != rqId)
|
|
continue;
|
|
}
|
|
else {
|
|
if (circuit->epId() != epId)
|
|
continue;
|
|
}
|
|
return circuit;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// Process incoming events for this span
|
|
bool MGCPSpan::processEvent(MGCPTransaction* tr, MGCPMessage* mm)
|
|
{
|
|
DDebug(&splugin,DebugInfo,"MGCPSpan::processEvent(%p,%p) '%s' [%p]",
|
|
tr,mm,mm->name().c_str(),this);
|
|
|
|
if (mm->name() == "NTFY") {
|
|
const String* rqId = mm->params.getParam("x");
|
|
if (null(rqId))
|
|
return false;
|
|
const String* event = mm->params.getParam("o");
|
|
if (c_str(event) && processNotify(tr,mm,*event,*rqId)) {
|
|
tr->setResponse(200);
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
// Process incoming notify events for this span
|
|
bool MGCPSpan::processNotify(MGCPTransaction* tr, MGCPMessage* mm, const String& event, const String& requestId)
|
|
{
|
|
DDebug(&splugin,DebugInfo,"MGCPSpan::processNotify(%p,%p,'%s','%s') [%p]",
|
|
tr,mm,event.c_str(),requestId.c_str(),this);
|
|
|
|
if (event.null())
|
|
return false;
|
|
else if (event.find(',') >= 0) {
|
|
// Multiple events
|
|
ObjList* l = event.split(',',false);
|
|
bool ok = false;
|
|
for (ObjList* p = l->skipNull(); p; p = p->skipNext())
|
|
ok = processNotify(tr,mm,p->get()->toString(),requestId) || ok;
|
|
delete l;
|
|
return ok;
|
|
}
|
|
else {
|
|
MGCPCircuit* circuit = findCircuit(mm->endpointId(),requestId);
|
|
if (!circuit)
|
|
return false;
|
|
int pos = event.find('/');
|
|
if (pos <= 0)
|
|
return false;
|
|
return circuit->processNotify(event.substr(0,pos).trimBlanks().toUpper(),
|
|
event.substr(pos+1).trimBlanks(),event);
|
|
}
|
|
}
|
|
|
|
// Process gateway restart events for this span
|
|
bool MGCPSpan::processRestart(MGCPTransaction* tr, MGCPMessage* mm, const String& method)
|
|
{
|
|
DDebug(&splugin,DebugInfo,"MGCPSpan::processRestart(%p,%p,'%s') [%p]",
|
|
tr,mm,method.c_str(),this);
|
|
if ((method &= "X-KeepAlive") || (method &= "disconnected") || (method &= "restart")) {
|
|
if (m_version.null()) {
|
|
m_version = mm->version();
|
|
Debug(&splugin,DebugNote,"MGCPSpan '%s' using version '%s' [%p]",
|
|
id().c_str(),m_version.c_str(),this);
|
|
}
|
|
operational(tr->addr());
|
|
}
|
|
else if (method &= "graceful")
|
|
operational(false);
|
|
else if (method &= "cancel-graceful")
|
|
operational(true);
|
|
else {
|
|
operational(false);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
// Process gateway-initiated connection deletion
|
|
bool MGCPSpan::processDelete(MGCPTransaction* tr, MGCPMessage* mm, const String& error)
|
|
{
|
|
DDebug(&splugin,DebugInfo,"MGCPSpan::processDelete(%p,%p,'%s') [%p]",
|
|
tr,mm,error.c_str(),this);
|
|
MGCPCircuit* circuit = findCircuit(mm->endpointId());
|
|
if (!circuit)
|
|
return false;
|
|
circuit->processDelete(mm,error);
|
|
return true;
|
|
}
|
|
|
|
|
|
MGCPCircuit::MGCPCircuit(unsigned int code, MGCPSpan* span, const char* id)
|
|
: SignallingCircuit(RTP,code,Missing,span->group(),span),
|
|
m_epId(id), m_statusReq(Missing),
|
|
m_localPort(0), m_sdpSession(0), m_sdpVersion(0),
|
|
m_remotePort(0), m_remotePayload(-1),
|
|
m_payloads(s_payloads), m_needClear(false), m_tr(0)
|
|
{
|
|
Debug(&splugin,DebugAll,"MGCPCircuit::MGCPCircuit(%u,%p,'%s') [%p]",
|
|
code,span,id,this);
|
|
u_int32_t cic = code;
|
|
m_notify.hexify(&cic,sizeof(cic));
|
|
m_callId.hexify(this,sizeof(this));
|
|
m_callId += m_notify;
|
|
m_notify = span->ntfyId() + m_notify;
|
|
}
|
|
|
|
MGCPCircuit::~MGCPCircuit()
|
|
{
|
|
Debug(&splugin,DebugAll,"MGCPCircuit::~MGCPCircuit() %u [%p]",
|
|
code(),this);
|
|
s_mutex.lock();
|
|
if (m_tr) {
|
|
m_tr->userData(0);
|
|
m_tr = 0;
|
|
}
|
|
s_mutex.unlock();
|
|
m_msg = 0;
|
|
cleanupRtp();
|
|
clearConn();
|
|
}
|
|
|
|
void* MGCPCircuit::getObject(const String& name) const
|
|
{
|
|
if (connected()) {
|
|
if (name == "DataSource")
|
|
return m_source;
|
|
if (name == "DataConsumer")
|
|
return m_consumer;
|
|
}
|
|
if (name == "MGCPCircuit")
|
|
return (void*)this;
|
|
return SignallingCircuit::getObject(name);
|
|
}
|
|
|
|
// Clean up any RTP we may still hold
|
|
void MGCPCircuit::cleanupRtp()
|
|
{
|
|
if (m_rtpId) {
|
|
m_rtpId.clear();
|
|
m_localIp.clear();
|
|
m_localPort = 0;
|
|
}
|
|
m_source = 0;
|
|
m_consumer = 0;
|
|
}
|
|
|
|
// Create a local RTP instance
|
|
bool MGCPCircuit::createRtp()
|
|
{
|
|
if (hasRtp())
|
|
return true;
|
|
cleanupRtp();
|
|
Message m("chan.rtp");
|
|
RefPointer<DataEndpoint> de = new DataEndpoint;
|
|
de->deref();
|
|
m.userData(de);
|
|
m.addParam("direction","bidir");
|
|
if (m_remoteIp && m_remotePort) {
|
|
m.addParam("remoteip",m_remoteIp);
|
|
m.addParam("remoteport",String(m_remotePort));
|
|
}
|
|
else
|
|
m.addParam("remoteip",mySpan()->address());
|
|
m.addParam("mgcp_allowed",String::boolText(false));
|
|
if (Engine::dispatch(m)) {
|
|
m_source = de->getSource();
|
|
m_consumer = de->getConsumer();
|
|
m_rtpId = m.getValue("rtpid");
|
|
m_localIp = m.getValue("localip");
|
|
m_localPort = m.getIntValue("localport");
|
|
if (m_localIp && m_localPort && hasRtp())
|
|
return true;
|
|
}
|
|
m_localIp.clear();
|
|
m_localPort = 0;
|
|
Debug(&splugin,DebugWarn,"MGCPCircuit::createRtp() failed [%p]",this);
|
|
cleanupRtp();
|
|
return false;
|
|
}
|
|
|
|
// Start the local RTP instance
|
|
bool MGCPCircuit::startRtp()
|
|
{
|
|
if (!(m_remoteIp && m_remotePort && (m_remotePayload >= 0) && hasRtp()))
|
|
return false;
|
|
Message m("chan.rtp");
|
|
m.addParam("direction","bidir");
|
|
m.addParam("rtpid",m_rtpId);
|
|
m.addParam("remoteip",m_remoteIp);
|
|
m.addParam("remoteport",String(m_remotePort));
|
|
m.addParam("payload",String(m_remotePayload));
|
|
if (m_localIp)
|
|
m.addParam("localip",m_localIp);
|
|
if (m_localPort)
|
|
m.addParam("localport",String(m_localPort));
|
|
m.addParam("mgcp_allowed",String::boolText(false));
|
|
if (Engine::dispatch(m))
|
|
return true;
|
|
Debug(&splugin,DebugWarn,"MGCPCircuit::startRtp() failed [%p]",this);
|
|
return false;
|
|
}
|
|
|
|
// Create or update remote connection
|
|
bool MGCPCircuit::setupConn()
|
|
{
|
|
RefPointer<MGCPMessage> mm = message(m_connId.null() ? "CRCX" : "MDCX");
|
|
mm->params.addParam("C",m_callId);
|
|
if (m_connId)
|
|
mm->params.addParam("I",m_connId);
|
|
if (m_localIp && m_localPort) {
|
|
mm->params.addParam("M","sendrecv");
|
|
if (m_sdpSession)
|
|
++m_sdpVersion;
|
|
else
|
|
m_sdpSession = m_sdpVersion = Time::secNow();
|
|
String mLine("audio ");
|
|
String oLine("yate ");
|
|
mLine << m_localPort << " RTP/AVP " << m_payloads;
|
|
oLine << m_sdpSession << " " << m_sdpVersion << " IN IP4 " << m_localIp;
|
|
MimeSdpBody* sdp = new MimeSdpBody;
|
|
sdp->addLine("v","0");
|
|
sdp->addLine("o",oLine);
|
|
sdp->addLine("s","PSTN Circuit");
|
|
sdp->addLine("c","IN IP4 " + m_localIp);
|
|
sdp->addLine("t","0 0");
|
|
sdp->addLine("m",mLine);
|
|
mm->sdp.append(sdp);
|
|
}
|
|
mm = sendSync(mm);
|
|
if (!mm)
|
|
return false;
|
|
if (m_connId.null())
|
|
m_connId = mm->params.getParam("i");
|
|
if (m_connId.null()) {
|
|
m_needClear = true;
|
|
return false;
|
|
}
|
|
MimeSdpBody* sdp = static_cast<MimeSdpBody*>(mm->sdp[0]);
|
|
if (sdp) {
|
|
m_remoteIp.clear();
|
|
m_remotePort = 0;
|
|
const NamedString* c = sdp->getLine("c");
|
|
if (c) {
|
|
String tmp(*c);
|
|
if (tmp.startSkip("IN IP4")) {
|
|
tmp.trimBlanks();
|
|
if (tmp == "0.0.0.0")
|
|
tmp.clear();
|
|
m_remoteIp = tmp;
|
|
}
|
|
}
|
|
c = sdp->getLine("m");
|
|
for (; c; c = sdp->getNextLine(c)) {
|
|
String tmp(*c);
|
|
if (!tmp.startSkip("audio",true))
|
|
continue;
|
|
int port = 0;
|
|
tmp >> port >> " ";
|
|
if (!tmp.startSkip("RTP/AVP",true,true))
|
|
continue;
|
|
m_remotePort = port;
|
|
tmp >> m_remotePayload;
|
|
return (m_remotePayload >= 0) && (m_remotePayload <= 255);
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
// Delete remote connection if any
|
|
void MGCPCircuit::clearConn(bool force)
|
|
{
|
|
if (m_connId.null() && !force)
|
|
return;
|
|
MGCPMessage* mm = message("DLCX");
|
|
if (m_connId) {
|
|
force = false;
|
|
mm->params.addParam("I",m_connId);
|
|
}
|
|
if (!force)
|
|
mm->params.addParam("C",m_callId);
|
|
m_connId.clear();
|
|
m_remoteIp.clear();
|
|
m_remotePort = 0;
|
|
m_sdpSession = 0;
|
|
sendAsync(mm);
|
|
}
|
|
|
|
// Build a MGCP message
|
|
MGCPMessage* MGCPCircuit::message(const char* cmd)
|
|
{
|
|
return new MGCPMessage(s_engine,cmd,epId(),mySpan()->version());
|
|
}
|
|
|
|
// Send a MGCP message asynchronously
|
|
bool MGCPCircuit::sendAsync(MGCPMessage* mm)
|
|
{
|
|
if (!mm)
|
|
return false;
|
|
MGCPEpInfo* ep = s_endpoint->find(mySpan()->epId().id());
|
|
if (ep && s_engine->sendCommand(mm,ep->address))
|
|
return true;
|
|
TelEngine::destruct(mm);
|
|
return false;
|
|
}
|
|
|
|
// Send a MGCP message, wait for an answer and return it
|
|
RefPointer<MGCPMessage> MGCPCircuit::sendSync(MGCPMessage* mm)
|
|
{
|
|
if (!mm)
|
|
return 0;
|
|
MGCPEpInfo* ep = s_endpoint->find(mySpan()->epId().id());
|
|
if (!ep) {
|
|
TelEngine::destruct(mm);
|
|
return 0;
|
|
}
|
|
while (m_msg) {
|
|
if (Thread::check(false))
|
|
return 0;
|
|
Thread::msleep(10);
|
|
}
|
|
MGCPTransaction* tr = s_engine->sendCommand(mm,ep->address);
|
|
tr->userData(static_cast<GenObject*>(this));
|
|
m_tr = tr;
|
|
while (m_tr == tr)
|
|
Thread::msleep(10);
|
|
RefPointer<MGCPMessage> tmp = m_msg;
|
|
m_msg = 0;
|
|
if (tmp)
|
|
Debug(&splugin,DebugNote,"MGCPCircuit::sendSync() returning %d '%s' [%p]",
|
|
tmp->code(),tmp->comment().c_str(),this);
|
|
else
|
|
Debug(&splugin,DebugMild,"MGCPCircuit::sendSync() returning NULL [%p]",this);
|
|
return tmp;
|
|
}
|
|
|
|
// Send asynchronously a notification request
|
|
bool MGCPCircuit::sendRequest(const char* sigReq, const char* reqEvt, const char* digitMap)
|
|
{
|
|
MGCPMessage* mm = message("RQNT");
|
|
mm->params.addParam("X",m_notify);
|
|
if (sigReq)
|
|
mm->params.addParam("S",sigReq);
|
|
if (reqEvt)
|
|
mm->params.addParam("R",reqEvt);
|
|
if (digitMap)
|
|
mm->params.addParam("D",digitMap);
|
|
return sendAsync(mm);
|
|
}
|
|
|
|
// Circuit status change request
|
|
bool MGCPCircuit::status(Status newStat, bool sync)
|
|
{
|
|
Debug(&splugin,DebugInfo,"MGCPCircuit::status(%s,%s) [%p]",
|
|
lookupStatus(newStat),String::boolText(sync),this);
|
|
if ((newStat == m_statusReq) && ((SignallingCircuit::status() == newStat) || !sync))
|
|
return true;
|
|
if (!mySpan()->operational()) {
|
|
if (newStat >= Idle)
|
|
return false;
|
|
}
|
|
m_statusReq = newStat;
|
|
switch (newStat) {
|
|
case Connected:
|
|
if (createRtp() && setupConn() && startRtp())
|
|
break;
|
|
m_statusReq = SignallingCircuit::status();
|
|
return false;
|
|
case Idle:
|
|
if (m_needClear) {
|
|
m_needClear = false;
|
|
clearConn(true);
|
|
}
|
|
default:
|
|
m_payloads = s_payloads;
|
|
cleanupRtp();
|
|
clearConn();
|
|
}
|
|
return SignallingCircuit::status(newStat,sync);
|
|
}
|
|
|
|
// Change the format of this circuit
|
|
bool MGCPCircuit::updateFormat(const char* format, int direction)
|
|
{
|
|
if (!format)
|
|
return false;
|
|
Debug(&splugin,DebugInfo,"MGCPCircuit::updateFormat('%s',%d) %u [%p]",
|
|
format,direction,code(),this);
|
|
if (0 == ::strcmp(format,"mulaw"))
|
|
m_payloads = "0";
|
|
else if (0 == ::strcmp(format,"alaw"))
|
|
m_payloads = "8";
|
|
else
|
|
return false;
|
|
return true;
|
|
}
|
|
|
|
// Send out an event on this circuit
|
|
bool MGCPCircuit::sendEvent(SignallingCircuitEvent::Type type, NamedList* params)
|
|
{
|
|
DDebug(&splugin,DebugAll,"MGCPCircuit::sendEvent(%u,%p) %u [%p]",
|
|
type,params,code(),this);
|
|
switch (type) {
|
|
case SignallingCircuitEvent::RingBegin:
|
|
return fxs() && sendRequest("L/rg");
|
|
// case SignallingCircuitEvent::RingEnd:
|
|
// return fxs() && sendRequest("L/rg(-)");
|
|
case SignallingCircuitEvent::Polarity:
|
|
return fxs() && sendRequest("L/lsa");
|
|
case SignallingCircuitEvent::OffHook:
|
|
return fxo() && sendRequest("L/hd","L/lsa(N)");
|
|
case SignallingCircuitEvent::OnHook:
|
|
return fxo() && sendRequest("L/hu");
|
|
case SignallingCircuitEvent::Flash:
|
|
return fxo() && sendRequest("L/hf");
|
|
case SignallingCircuitEvent::Dtmf:
|
|
if (params) {
|
|
const String* tone = params->getParam("tone");
|
|
if (!tone)
|
|
tone = params;
|
|
if (!null(tone))
|
|
return sendRequest("D/" + *tone);
|
|
}
|
|
break;
|
|
default:
|
|
;
|
|
}
|
|
return SignallingCircuit::sendEvent(type,params);
|
|
}
|
|
|
|
// Process incoming events for this circuit
|
|
bool MGCPCircuit::processEvent(MGCPTransaction* tr, MGCPMessage* mm)
|
|
{
|
|
Debug(&splugin,DebugAll,"MGCPCircuit::processEvent(%p,%p) [%p]",
|
|
tr,mm,this);
|
|
if (tr == m_tr) {
|
|
if (!mm || (tr->msgResponse())) {
|
|
tr->userData(0);
|
|
m_msg = mm;
|
|
m_tr = 0;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// Process notifications for this circuit
|
|
bool MGCPCircuit::processNotify(const String& package, const String& event, const String& fullName)
|
|
{
|
|
DDebug(&splugin,DebugAll,"MGCPCircuit::processNotify('%s','%s') %u [%p]",
|
|
package.c_str(),event.c_str(),code(),this);
|
|
if (package.null() || event.null())
|
|
return false;
|
|
if ((package == "L") || (package == "H")) {
|
|
// Line or Handset events
|
|
if (event &= "hd") {
|
|
if (!mySpan()->operational()) {
|
|
Debug(&splugin,DebugMild,"Got Off-Hook on non-operational span '%s' [%p]",
|
|
mySpan()->id().c_str(),this);
|
|
return false;
|
|
}
|
|
if (fxs())
|
|
sendRequest(0,"L/hu(N),D/[0-9#*](N)");
|
|
return enqueueEvent(SignallingCircuitEvent::OffHook,fullName);
|
|
}
|
|
else if (event &= "hu") {
|
|
if (SignallingCircuit::status() == Connected)
|
|
status(Idle,false);
|
|
if (m_needClear) {
|
|
m_needClear = false;
|
|
clearConn(true);
|
|
}
|
|
return enqueueEvent(SignallingCircuitEvent::OnHook,fullName);
|
|
}
|
|
else if (event &= "hf")
|
|
return enqueueEvent(SignallingCircuitEvent::Flash,fullName);
|
|
else if (event &= "lsa")
|
|
return enqueueEvent(SignallingCircuitEvent::Polarity,fullName);
|
|
}
|
|
else if (package == "D") {
|
|
// DTMF events
|
|
if (event.length() == 1)
|
|
return enqueueEvent(SignallingCircuitEvent::Dtmf,fullName,event);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
// We were forcibly disconnected by the gateway
|
|
void MGCPCircuit::processDelete(MGCPMessage* mm, const String& error)
|
|
{
|
|
if (m_connId)
|
|
Debug(&splugin,DebugWarn,"Gateway deleted connection '%s' on circuit %u [%p]",
|
|
m_connId.c_str(),code(),this);
|
|
m_connId.clear();
|
|
m_remoteIp.clear();
|
|
m_remotePort = 0;
|
|
m_sdpSession = 0;
|
|
m_payloads = s_payloads;
|
|
unsigned int code = 0;
|
|
String tmp(error);
|
|
tmp >> code;
|
|
switch (code) {
|
|
case 901: // Endpoint taken out of service
|
|
case 904: // Manual intervention
|
|
SignallingCircuit::status(Disabled);
|
|
break;
|
|
case 900: // Malfunction
|
|
case 902: // Loss of connectivity
|
|
case 905: // Facility failure
|
|
SignallingCircuit::status(Missing);
|
|
break;
|
|
default:
|
|
SignallingCircuit::status(Idle);
|
|
}
|
|
enqueueEvent(SignallingCircuitEvent::Alarm,error);
|
|
}
|
|
|
|
// Enqueue an event detected by this circuit
|
|
bool MGCPCircuit::enqueueEvent(SignallingCircuitEvent::Type type, const char* name, const char* dtmf)
|
|
{
|
|
DDebug(&splugin,DebugAll,"Enqueueing event %u '%s' '%s' on %u [%p]",
|
|
type,name,dtmf,code(),this);
|
|
SignallingCircuitEvent* ev = new SignallingCircuitEvent(this,type,name);
|
|
if (dtmf)
|
|
ev->addParam("tone",dtmf);
|
|
addEvent(ev);
|
|
return true;
|
|
}
|
|
|
|
|
|
// Handler for chan.rtp messages - one per media type
|
|
bool RtpHandler::received(Message& msg)
|
|
{
|
|
// refuse calls from a MGCP-GW
|
|
if (!msg.getBoolValue("mgcp_allowed",true))
|
|
return false;
|
|
String trans = msg.getValue("transport");
|
|
if (trans && !trans.startsWith("RTP/"))
|
|
return false;
|
|
Debug(&splugin,DebugAll,"RTP message received");
|
|
|
|
CallEndpoint* ch = YOBJECT(CallEndpoint,msg.userData());
|
|
const char* media = msg.getValue("media","audio");
|
|
MGCPWrapper* w = MGCPWrapper::find(ch,media);
|
|
if (w)
|
|
Debug(&splugin,DebugAll,"Wrapper %p found by CallEndpoint",w);
|
|
else {
|
|
w = MGCPWrapper::find(msg.getValue("rtpid"));
|
|
if (w)
|
|
Debug(&splugin,DebugAll,"Wrapper %p found by ID",w);
|
|
}
|
|
if (!(ch || w)) {
|
|
Debug(&splugin,DebugWarn,"Neither call channel nor MGCP wrapper found!");
|
|
return false;
|
|
}
|
|
|
|
if (w)
|
|
return w->rtpMessage(msg);
|
|
|
|
const char* epId = msg.getValue("mgcp_endpoint",s_defaultEp);
|
|
if (!epId)
|
|
return false;
|
|
|
|
if (ch)
|
|
ch->clearEndpoint(media);
|
|
w = new MGCPWrapper(ch,media,msg,epId);
|
|
if (!w->rtpMessage(msg))
|
|
return false;
|
|
if (ch && ch->getPeer())
|
|
w->connect(ch->getPeer()->getEndpoint(media));
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
// Handler for chan.sdp messages - one message for all media at once
|
|
bool SdpHandler::received(Message& msg)
|
|
{
|
|
// refuse calls from a MGCP-GW
|
|
if (!msg.getBoolValue("mgcp_allowed",true))
|
|
return false;
|
|
Debug(&splugin,DebugAll,"SDP message received");
|
|
|
|
return false;
|
|
}
|
|
|
|
|
|
// Handler for chan.dtmf messages, forwards them to the remote endpoint
|
|
bool DTMFHandler::received(Message& msg)
|
|
{
|
|
String targetid(msg.getValue("targetid"));
|
|
if (targetid.null())
|
|
return false;
|
|
String text(msg.getValue("text"));
|
|
if (text.null())
|
|
return false;
|
|
MGCPWrapper* wrap = MGCPWrapper::find(targetid);
|
|
return wrap && wrap->sendDTMF(text);
|
|
}
|
|
|
|
|
|
MGCPPlugin::MGCPPlugin()
|
|
: Module("mgcpca","misc")
|
|
{
|
|
Output("Loaded module MGCP-CA");
|
|
}
|
|
|
|
MGCPPlugin::~MGCPPlugin()
|
|
{
|
|
Output("Unloading module MGCP-CA");
|
|
s_wrappers.clear();
|
|
s_spans.clear();
|
|
delete s_engine;
|
|
}
|
|
|
|
void MGCPPlugin::statusParams(String& str)
|
|
{
|
|
s_mutex.lock();
|
|
str.append("spans=",",") << s_spans.count();
|
|
str.append("chans=",",") << s_wrappers.count();
|
|
s_mutex.unlock();
|
|
}
|
|
|
|
void MGCPPlugin::statusDetail(String& str)
|
|
{
|
|
s_mutex.lock();
|
|
ObjList* l = s_wrappers.skipNull();
|
|
for (; l; l=l->skipNext()) {
|
|
MGCPWrapper* w = static_cast<MGCPWrapper*>(l->get());
|
|
str.append(w->id(),",") << "=" << w->callId();
|
|
}
|
|
s_mutex.unlock();
|
|
}
|
|
|
|
void MGCPPlugin::initialize()
|
|
{
|
|
Output("Initializing module MGCP Call Agent");
|
|
Configuration cfg(Engine::configFile("mgcpca"));
|
|
setup();
|
|
NamedList* engSect = cfg.getSection("engine");
|
|
if (s_engine && engSect)
|
|
s_engine->initialize(*engSect);
|
|
while (!s_engine) {
|
|
if (!(engSect && engSect->getBoolValue("enabled",true)))
|
|
break;
|
|
int n = cfg.sections();
|
|
for (int i = 0; i < n; i++) {
|
|
NamedList* sect = cfg.getSection(i);
|
|
if (!sect)
|
|
continue;
|
|
String name(*sect);
|
|
if (name.startSkip("gw") && name) {
|
|
const char* host = sect->getValue("host");
|
|
if (!host)
|
|
continue;
|
|
if (!s_engine) {
|
|
s_engine = new YMGCPEngine(engSect);
|
|
s_engine->debugChain(this);
|
|
s_endpoint = new MGCPEndpoint(
|
|
s_engine,
|
|
cfg.getValue("endpoint","user","yate"),
|
|
cfg.getValue("endpoint","host",s_engine->address().host()),
|
|
cfg.getIntValue("endpoint","port")
|
|
);
|
|
}
|
|
MGCPEpInfo* ep = s_endpoint->append(
|
|
sect->getValue("user",name),
|
|
host,
|
|
sect->getIntValue("port",0)
|
|
);
|
|
if (ep) {
|
|
ep->alias = sect->getValue("name",name);
|
|
if (sect->getBoolValue("default",s_defaultEp.null()))
|
|
s_defaultEp = ep->toString();
|
|
}
|
|
else
|
|
Debug(this,DebugWarn,"Could not set endpoint for gateway '%s'",
|
|
name.c_str());
|
|
}
|
|
}
|
|
if (!s_engine) {
|
|
Debug(this,DebugAll,"No gateways defined so module not initialized.");
|
|
break;
|
|
}
|
|
if (s_defaultEp)
|
|
Debug(this,DebugCall,"Default remote endpoint: '%s'",s_defaultEp.c_str());
|
|
int prio = cfg.getIntValue("general","priority",80);
|
|
if (prio > 0) {
|
|
Engine::install(new RtpHandler(prio));
|
|
Engine::install(new SdpHandler(prio));
|
|
Engine::install(new DTMFHandler);
|
|
}
|
|
}
|
|
}
|
|
|
|
}; // anonymous namespace
|
|
|
|
/* vi: set ts=8 sw=4 sts=4 noet: */
|