103 lines
3.0 KiB
C++
103 lines
3.0 KiB
C++
/**
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* layer4.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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* Yet Another Signalling Stack - implements the support for SS7, ISDN and PSTN
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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) 2004-2014 Null Team
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*
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* This software is distributed under multiple licenses;
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* see the COPYING file in the main directory for licensing
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* information for this specific distribution.
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*
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* This use of this software may be subject to additional restrictions.
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* See the LEGAL file in the main directory for details.
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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.
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*/
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#include "yatesig.h"
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#include <stdlib.h>
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using namespace TelEngine;
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SS7Layer4::SS7Layer4(unsigned char sio, const NamedList* params)
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: SignallingComponent("SS7Layer4",params),
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m_sio(sio), m_l3Mutex(true,"SS7Layer4::layer3"), m_layer3(0)
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{
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if (!params)
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return;
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m_sio = getSIO(*params,sio);
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}
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void SS7Layer4::destroyed()
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{
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attach(0);
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SignallingComponent::destroyed();
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}
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unsigned char SS7Layer4::getSIO(const NamedList& params, unsigned char sif, unsigned char prio, unsigned char ni)
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{
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if ((prio & 0x30) == 0)
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prio <<= 4;
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if ((ni & 0xc0) == 0)
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ni <<= 6;
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sif = params.getIntValue(YSTRING("service"),sif & 0x0f);
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prio = SS7MSU::getPriority(params.getValue(YSTRING("priority")),prio & 0x30);
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if ((prio & 0x30) == 0)
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prio <<= 4;
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ni = SS7MSU::getNetIndicator(params.getValue(YSTRING("netindicator")),ni & 0xc0);
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if ((ni & 0xc0) == 0)
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ni <<= 6;
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return (sif & 0x0f) | (prio & 0x30) | (ni & 0xc0);
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}
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bool SS7Layer4::initialize(const NamedList* config)
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{
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if (engine() && !network()) {
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NamedList params("ss7router");
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if (resolveConfig(YSTRING("router"),params,config) && params.toBoolean(true))
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attach(YOBJECT(SS7Router,engine()->build("SS7Router",params,true,false)));
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else if (resolveConfig(YSTRING("network"),params,config) && params.toBoolean(true))
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attach(YOBJECT(SS7Layer3,engine()->build("SS7Layer3",params,true)));
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}
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return m_layer3 != 0;
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}
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void SS7Layer4::attach(SS7Layer3* network)
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{
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Lock lock(m_l3Mutex);
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if (m_layer3 == network)
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return;
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SS7Layer3* tmp = m_layer3;
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m_layer3 = network;
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lock.drop();
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if (tmp) {
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const char* name = 0;
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if (!engine() || engine()->find(tmp)) {
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name = tmp->toString().safe();
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if (tmp->getObject(YSTRING("SS7Router")))
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(static_cast<SS7Router*>(tmp))->detach(this);
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else
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tmp->attach(0);
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}
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Debug(this,DebugAll,"Detached network/router (%p,'%s') [%p]",tmp,name,this);
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}
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if (!network)
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return;
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Debug(this,DebugAll,"Attached network/router (%p,'%s') [%p]",
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network,network->toString().safe(),this);
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insert(network);
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SS7Router* router = YOBJECT(SS7Router,network);
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if (router)
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router->attach(this);
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else
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network->attach(this);
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}
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/* vi: set ts=8 sw=4 sts=4 noet: */
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