94b6e06060
git-svn-id: http://yate.null.ro/svn/yate/trunk@5287 acf43c95-373e-0410-b603-e72c3f656dc1
303 lines
8 KiB
C++
303 lines
8 KiB
C++
/**
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* pbx.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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* Basic PBX message handlers
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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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using namespace TelEngine;
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namespace { // anonymous
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class PbxModule : public Module
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{
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public:
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PbxModule();
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virtual ~PbxModule();
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virtual void initialize();
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bool m_first;
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};
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static PbxModule s_module;
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static const String s_masquerade("chan.masquerade");
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// chan.connect handler used to connect two channels
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class ConnHandler : public MessageHandler
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{
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public:
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ConnHandler(int prio = 90)
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: MessageHandler("chan.connect",prio,s_module.name())
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{ }
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virtual bool received(Message &msg);
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};
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// call.execute handler used to 'steal' a channel
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class ChanPickup : public MessageHandler
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{
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public:
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ChanPickup(int prio = 100)
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: MessageHandler("call.execute",prio,s_module.name())
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{ }
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virtual bool received(Message &msg);
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};
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// chan.attach handler used for detaching data nodes by message
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class AttachHandler : public MessageHandler
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{
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public:
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AttachHandler(int prio = 100)
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: MessageHandler("chan.attach",prio,s_module.name())
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{ }
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virtual bool received(Message &msg);
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};
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// chan.record handler used for detaching data nodes by message
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class RecordHandler : public MessageHandler
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{
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public:
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RecordHandler(int prio = 100)
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: MessageHandler("chan.record",prio,s_module.name())
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{ }
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virtual bool received(Message &msg);
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};
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// Utility function to get a pointer to a call endpoint (or its peer) by id
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static CallEndpoint* locateChan(const String& id, bool peer = false)
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{
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if (id.null())
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return 0;
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Message m("chan.locate");
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m.addParam("id",id);
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if (!Engine::dispatch(m))
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return 0;
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CallEndpoint* ce = static_cast<CallEndpoint*>(m.userObject("CallEndpoint"));
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if (!ce)
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return 0;
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return peer ? ce->getPeer() : ce;
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}
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bool ConnHandler::received(Message &msg)
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{
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const char* id = msg.getValue("id");
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bool idPeer = msg.getBoolValue("id_peer");
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RefPointer<CallEndpoint> c1;
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if (id) {
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CallEndpoint* c = YOBJECT(CallEndpoint,msg.userData());
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if (c && (c->id() == id))
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c1 = idPeer ? c->getPeer() : c;
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}
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if (!c1)
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c1 = locateChan(id,idPeer);
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RefPointer<CallEndpoint> c2(locateChan(msg.getValue("targetid"),msg.getBoolValue("targetid_peer")));
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if (!(c1 && c2))
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return false;
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return c1->connect(c2,msg.getValue("reason"));
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}
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// call.execute handler used to 'steal' a channel
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bool ChanPickup::received(Message& msg)
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{
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String callto = msg.getValue("callto");
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if (!(callto.startSkip("pickup/",false) && callto))
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return false;
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// It's ours. Get the channels
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RefPointer<CallEndpoint> caller(YOBJECT(CallEndpoint,msg.userData()));
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RefPointer<CallEndpoint> called(locateChan(callto,msg.getBoolValue("pickup_peer",true)));
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if (!caller) {
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Debug(&s_module,DebugNote,"No channel to pick up: callto='%s'",
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msg.getValue("callto"));
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msg.setParam("error","failure");
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return false;
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}
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if (!called) {
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Debug(&s_module,DebugInfo,
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"Can't locate the peer for channel '%s' to pick up",callto.c_str());
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msg.setParam("error","nocall");
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return false;
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}
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// Connect parties and answer them
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const char* reason = msg.getValue("reason","pickup");
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Debug(&s_module,DebugAll,"Channel '%s' picking up '%s' abandoning '%s', reason: '%s'",
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caller->id().c_str(),called->id().c_str(),called->getPeerId().c_str(),reason);
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if (!called->connect(caller,reason)) {
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Debug(&s_module,DebugNote,"Pick up failed to connect '%s' to '%s'",
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caller->id().c_str(),called->id().c_str());
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return false;
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}
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msg.setParam("peerid",called->id());
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msg.setParam("targetid",called->id());
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Message* m = new Message(s_masquerade);
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m->addParam("id",called->id());
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m->addParam("message","call.answered");
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m->addParam("peerid",called->getPeerId());
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m->addParam("reason",reason);
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if (Engine::dispatch(m) || (s_masquerade != *m))
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TelEngine::destruct(m);
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else {
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*m = "call.answered";
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m->clearParam("message");
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Engine::enqueue(m);
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}
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if (caller->getPeer() != called) {
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Debug(&s_module,DebugMild,"Channel '%s' disconnected from '%s' while picking up",
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caller->id().c_str(),called->id().c_str());
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return true;
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}
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m = new Message(s_masquerade);
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m->addParam("id",caller->id());
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m->addParam("message","call.answered");
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m->addParam("peerid",called->getPeerId());
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m->addParam("reason",reason);
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Engine::enqueue(m);
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return true;
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}
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// chan.attach handler for detaching data nodes by message
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bool AttachHandler::received(Message &msg)
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{
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bool src = msg[YSTRING("source")] == "-";
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bool cons = msg[YSTRING("consumer")] == "-";
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bool ovr = msg[YSTRING("override")] == "-";
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bool repl = msg[YSTRING("replace")] == "-";
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if (!(src || cons || ovr || repl))
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return false;
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RefPointer<DataEndpoint> de = static_cast<DataEndpoint*>(msg.userObject(YSTRING("DataEndpoint")));
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if (!de) {
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CallEndpoint* ch = static_cast<CallEndpoint*>(msg.userObject(YSTRING("CallEndpoint")));
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if (ch) {
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DataEndpoint::commonMutex().lock();
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de = ch->getEndpoint(msg.getValue(YSTRING("media"),"audio"));
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DataEndpoint::commonMutex().unlock();
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}
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if (!de)
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return false;
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}
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if (src)
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de->setSource();
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if (cons)
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de->setConsumer();
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if (ovr || repl) {
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RefPointer<DataSource> sPeer = 0;
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DataEndpoint::commonMutex().lock();
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RefPointer<DataConsumer> c = de->getConsumer();
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if (repl && de->getPeer())
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sPeer = de->getPeer()->getSource();
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RefPointer<DataEndpoint> de2 = repl ? de->getPeer() : 0;
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DataEndpoint::commonMutex().unlock();
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if (c) {
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if (repl) {
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RefPointer<DataSource> s = c->getConnSource();
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if (s)
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s->detach(c);
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// we need to reattach the peer's source, if any
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if (sPeer)
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DataTranslator::attachChain(sPeer,c);
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}
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if (ovr) {
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RefPointer<DataSource> s = c->getOverSource();
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if (s)
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s->detach(c);
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}
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}
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}
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de = 0;
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// Stop dispatching if we handled all requested
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return msg.getBoolValue(YSTRING("single"));
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}
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// chan.record handler for detaching data nodes by message
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bool RecordHandler::received(Message &msg)
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{
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bool call = msg[YSTRING("call")] == "-";
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bool peer = msg[YSTRING("peer")] == "-";
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if (!(call || peer))
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return false;
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RefPointer<DataEndpoint> de = static_cast<DataEndpoint*>(msg.userObject(YSTRING("DataEndpoint")));
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if (!de) {
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CallEndpoint* ch = static_cast<CallEndpoint*>(msg.userObject(YSTRING("CallEndpoint")));
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if (ch) {
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DataEndpoint::commonMutex().lock();
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de = ch->getEndpoint(msg.getValue(YSTRING("media"),"audio"));
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DataEndpoint::commonMutex().unlock();
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}
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if (!de)
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return false;
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}
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if (call)
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de->setCallRecord();
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if (peer)
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de->setPeerRecord();
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de = 0;
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// Stop dispatching if we handled all requested
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return msg.getBoolValue(YSTRING("single"),call && peer);
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}
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PbxModule::PbxModule()
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: Module("pbx","misc"), m_first(true)
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{
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Output("Loaded module PBX");
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}
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PbxModule::~PbxModule()
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{
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Output("Unloading module PBX");
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}
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void PbxModule::initialize()
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{
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Output("Initializing module PBX");
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if (m_first) {
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setup();
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m_first = false;
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Engine::install(new ConnHandler);
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Engine::install(new ChanPickup);
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Engine::install(new AttachHandler);
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Engine::install(new RecordHandler);
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}
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}
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}; // anonymous namespace
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/* vi: set ts=8 sw=4 sts=4 noet: */
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