476 lines
11 KiB
C++
476 lines
11 KiB
C++
/**
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* callgen.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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* Call Generator
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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 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., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <yatephone.h>
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#include <stdlib.h>
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#include <unistd.h>
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using namespace TelEngine;
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static Mutex s_mutex(true);
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static ObjList s_calls;
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static Configuration s_cfg;
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static bool s_runs = false;
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static int s_total = 0;
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static int s_current = 0;
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static int s_ringing = 0;
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static int s_answers = 0;
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static int s_numcalls = 0;
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static const char s_help[] = "callgen {start|stop|drop|pause|resume|single|info|load|save|set paramname[=value]}";
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class GenConnection : public DataEndpoint
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{
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public:
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GenConnection(const String& callto);
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~GenConnection();
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virtual const String& toString() const
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{ return m_id; }
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virtual void disconnected(bool final, const char *reason);
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void ringing();
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void answered();
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void hangup();
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void makeSource();
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inline const String& id() const
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{ return m_id; }
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inline const String& status() const
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{ return m_status; }
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inline const String& party() const
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{ return m_callto; }
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inline void setTarget(const char *target = 0)
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{ m_target = target; }
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inline const String& getTarget() const
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{ return m_target; }
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inline unsigned long long age() const
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{ return Time::now() - m_start; }
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static GenConnection* find(const String& id);
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static bool oneCall(String* target = 0);
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private:
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String m_id;
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String m_status;
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String m_callto;
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String m_target;
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unsigned long long m_start;
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};
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class GenThread : public Thread
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{
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public:
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GenThread()
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: Thread("CallGen")
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{ }
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virtual void run();
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};
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class ConnHandler : public MessageReceiver
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{
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public:
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enum {
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Ringing,
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Answered,
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Execute,
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Drop,
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};
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virtual bool received(Message &msg, int id);
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};
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class CmdHandler : public MessageReceiver
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{
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public:
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enum {
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Drop,
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Status,
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Command,
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Help
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};
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virtual bool received(Message &msg, int id);
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bool doCommand(String& line, String& rval);
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};
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class CallGenPlugin : public Plugin
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{
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public:
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CallGenPlugin();
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virtual ~CallGenPlugin();
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virtual void initialize();
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private:
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bool m_first;
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};
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GenConnection::GenConnection(const String& callto)
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: m_callto(callto)
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{
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m_start = Time::now();
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m_status = "calling";
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s_mutex.lock();
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s_calls.append(this);
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m_id << "callgen/" << ++s_total;
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++s_current;
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s_mutex.unlock();
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}
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GenConnection::~GenConnection()
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{
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m_status = "destroyed";
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s_mutex.lock();
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s_calls.remove(this,false);
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--s_current;
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s_mutex.unlock();
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}
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GenConnection* GenConnection::find(const String& id)
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{
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ObjList* l = s_calls.find(id);
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return l ? static_cast<GenConnection*>(l->get()) : 0;
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}
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bool GenConnection::oneCall(String* target)
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{
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Message m("call.route");
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m.addParam("driver","callgen");
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m.addParam("caller",s_cfg.getValue("parameters","caller","yate"));
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String callto(s_cfg.getValue("parameters","callto"));
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if (callto.null()) {
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String called(s_cfg.getValue("parameters","called"));
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if (called.null()) {
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int n_min = s_cfg.getIntValue("parameters","minnum");
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if (n_min <= 0)
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return false;
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int n_max = s_cfg.getIntValue("parameters","maxnum",n_min);
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if (n_max < n_min)
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return false;
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called = (unsigned)(n_min + (((n_max - n_min) * (long long)::random()) / RAND_MAX));
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}
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if (target)
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*target = called;
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m.addParam("called",called);
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if (!Engine::dispatch(m) || m.retValue().null()) {
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Debug("CallGen",DebugInfo,"No route to call '%s'",called.c_str());
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return false;
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}
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callto = m.retValue();
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m.retValue().clear();
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}
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if (target) {
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if (*target)
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*target << " ";
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*target << callto;
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}
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m = "call.execute";
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m.addParam("callto",callto);
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GenConnection* conn = new GenConnection(callto);
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m.addParam("id",conn->id());
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m.userData(conn);
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if (Engine::dispatch(m)) {
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conn->setTarget(m.getValue("targetid"));
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if (conn->getTarget().null()) {
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Debug(DebugInfo,"Answering now generated call %s [%p] because we have no targetid",
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conn->id().c_str(),conn);
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conn->answered();
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}
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conn->deref();
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return true;
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}
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Debug("CallGen",DebugInfo,"Rejecting '%s' unconnected to '%s'",
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conn->id().c_str(),callto.c_str());
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conn->destruct();
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return false;
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}
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void GenConnection::disconnected(bool final, const char *reason)
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{
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Debug("CallGen",DebugInfo,"Disconnected '%s' reason '%s' [%p]",m_id.c_str(),reason,this);
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m_status = "disconnected";
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}
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void GenConnection::ringing()
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{
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Debug("CallGen",DebugInfo,"Ringing '%s' [%p]",m_id.c_str(),this);
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m_status = "ringing";
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s_mutex.lock();
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++s_ringing;
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bool media =s_cfg.getBoolValue("parameters","earlymedia",true);
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s_mutex.unlock();
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if (media)
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makeSource();
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}
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void GenConnection::answered()
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{
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Debug("CallGen",DebugInfo,"Answered '%s' [%p]",m_id.c_str(),this);
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m_status = "answered";
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s_mutex.lock();
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++s_answers;
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s_mutex.unlock();
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makeSource();
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}
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void GenConnection::hangup()
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{
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}
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void GenConnection::makeSource()
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{
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if (getSource())
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return;
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s_mutex.lock();
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String src(s_cfg.getValue("parameters","source"));
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s_mutex.unlock();
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if (src) {
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Message m("chan.attach");
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m.addParam("id",m_id);
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m.addParam("source",src);
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m.userData(this);
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Engine::dispatch(m);
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}
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}
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bool ConnHandler::received(Message &msg, int id)
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{
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String callid(msg.getValue("targetid"));
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if (!callid.startsWith("callgen/",false))
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return false;
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GenConnection *conn = GenConnection::find(callid);
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if (!conn) {
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Debug(DebugInfo,"Target '%s' was not found in list",callid.c_str());
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return false;
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}
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String text(msg.getValue("text"));
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switch (id) {
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case Answered:
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conn->answered();
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break;
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case Ringing:
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conn->ringing();
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break;
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case Execute:
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break;
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case Drop:
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break;
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}
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return true;
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}
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void GenThread::run()
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{
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for (;;) {
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::usleep(1000000);
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Lock lock(s_mutex);
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int maxcalls = s_cfg.getIntValue("parameters","maxcalls",5);
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if (!s_runs || (s_current >= maxcalls) || (s_numcalls <= 0))
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continue;
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--s_numcalls;
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lock.drop();
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GenConnection::oneCall();
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}
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}
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bool CmdHandler::doCommand(String& line, String& rval)
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{
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if (line.startSkip("set")) {
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int q = line.find('=');
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s_mutex.lock();
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if (q >= 0) {
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String val = line.substr(q+1).trimBlanks();
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line = line.substr(0,q).trimBlanks().toLower();
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s_cfg.setValue("parameters",line,val.c_str());
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rval << "Set '" << line << "' to '" << val << "'";
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}
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else {
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line.toLower();
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rval << "Value of '" << line << "' is '" << s_cfg.getValue("parameters",line) << "'";
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}
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s_mutex.unlock();
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}
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else if (line == "info") {
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s_mutex.lock();
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rval << "Made " << s_total << " calls, "
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<< s_ringing << " ring, "
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<< s_answers << " answered, "
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<< s_current << " running";
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if (s_runs)
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rval << ", " << s_numcalls << " to go";
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s_mutex.unlock();
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}
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else if (line == "start") {
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s_mutex.lock();
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s_numcalls = s_cfg.getIntValue("parameters","numcalls",100);
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rval << "Generating " << s_numcalls << " new calls";
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s_runs = true;
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s_mutex.unlock();
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}
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else if (line == "stop") {
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s_mutex.lock();
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s_runs = false;
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s_numcalls = 0;
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s_mutex.unlock();
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s_calls.clear();
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rval << "Stopping generator and clearing calls";
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}
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else if (line == "drop") {
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s_mutex.lock();
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bool tmp = s_runs;
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s_runs = false;
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s_mutex.unlock();
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s_calls.clear();
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s_runs = tmp;
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rval << "Clearing calls and continuing";
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}
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else if (line == "pause") {
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s_runs = false;
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rval << "No longer generating new calls";
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}
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else if (line == "resume") {
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s_mutex.lock();
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rval << "Resumed generating new calls, " << s_numcalls << " to go";
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s_runs = true;
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s_mutex.unlock();
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}
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else if (line == "single") {
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String dest;
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if (GenConnection::oneCall(&dest))
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rval << "Calling " << dest;
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else {
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rval << "Failed to start call";
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if (dest)
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rval << " to " << dest;
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}
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}
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else if (line == "load") {
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s_mutex.lock();
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s_cfg.load();
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rval << "Loaded config from " << s_cfg;
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s_mutex.unlock();
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}
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else if (line == "save") {
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s_mutex.lock();
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if (s_cfg.getBoolValue("general","cansave",true)) {
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s_cfg.save();
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rval << "Saved config to " << s_cfg;
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}
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else
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rval << "Saving is disabled from config file";
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s_mutex.unlock();
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}
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else if (line.null() || (line == "help") || (line == "?"))
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rval << "Usage: " << s_help;
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else
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return false;
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rval << "\n";
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return true;
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}
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bool CmdHandler::received(Message &msg, int id)
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{
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String tmp;
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switch (id) {
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case Status:
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tmp = msg.getValue("module");
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if (tmp.null() || (tmp == "callgen")) {
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s_mutex.lock();
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msg.retValue() << "name=callgen,type=varchans,format=Status|Callto"
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<< ";total=" << s_total
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<< ",ring=" << s_ringing
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<< ",answered=" << s_answers
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<< ",chans=" << s_current << ";";
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ObjList *l = &s_calls;
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bool first = true;
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for (; l; l=l->next()) {
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GenConnection *c = static_cast<GenConnection *>(l->get());
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if (c) {
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if (first)
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first = false;
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else
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msg.retValue() << ",";
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msg.retValue() << c->id() << "=" << c->status() << "|" << c->party();
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}
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}
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msg.retValue() << "\n";
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s_mutex.unlock();
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if (tmp)
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return true;
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}
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break;
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case Command:
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tmp = msg.getValue("line");
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if (tmp.startSkip("callgen"))
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return doCommand(tmp,msg.retValue());
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break;
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case Help:
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tmp = msg.getValue("line");
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if (tmp.null() || (tmp == "callgen")) {
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msg.retValue() << " " << s_help << "\n";
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if (tmp)
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return true;
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}
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break;
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}
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return false;
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}
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CallGenPlugin::CallGenPlugin()
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: m_first(true)
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{
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Output("Loaded module Call Generator");
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}
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CallGenPlugin::~CallGenPlugin()
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{
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Output("Unloading module Call Generator");
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s_calls.clear();
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}
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void CallGenPlugin::initialize()
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{
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Output("Initializing module Call Generator");
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s_cfg = Engine::configFile("callgen");
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s_cfg.load();
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if (m_first) {
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m_first = false;
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ConnHandler* coh = new ConnHandler;
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Engine::install(new MessageRelay("call.ringing",coh,ConnHandler::Ringing));
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Engine::install(new MessageRelay("call.answered",coh,ConnHandler::Answered));
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Engine::install(new MessageRelay("call.execute",coh,ConnHandler::Execute));
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Engine::install(new MessageRelay("call.drop",coh,ConnHandler::Drop));
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CmdHandler* cmh = new CmdHandler;
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Engine::install(new MessageRelay("engine.status",cmh,CmdHandler::Status));
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Engine::install(new MessageRelay("engine.command",cmh,CmdHandler::Command));
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Engine::install(new MessageRelay("engine.help",cmh,CmdHandler::Help));
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GenThread* gen = new GenThread;
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if (!gen->startup()) {
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Debug(DebugGoOn,"Failed to start call generator thread");
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delete gen;
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}
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}
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}
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INIT_PLUGIN(CallGenPlugin);
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/* vi: set ts=8 sw=4 sts=4 noet: */
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