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yate/libs/yiax/engine.cpp

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/**
* engine.cpp
* Yet Another IAX2 Stack
* This file is part of the YATE Project http://YATE.null.ro
*
* Yet Another Telephony Engine - a fully featured software PBX and IVR
* Copyright (C) 2004-2006 Null Team
* Author: Marian Podgoreanu
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <yateiax.h>
#include <yateversn.h>
#include <stdlib.h>
#include <string.h>
using namespace TelEngine;
// Local call number to set when rejecting calls with missing call token
#define IAX2_CALLTOKEN_REJ_CALLNO 1
// Local call number to set when sending call token message
#define IAX2_CALLTOKEN_CALLNO 1
// Minimum value for local call numbers
#define IAX2_MIN_CALLNO 2
// Build an MD5 digest from secret, address, integer value and engine run id
// MD5(addr.host() + secret + addr.port() + t)
static void buildSecretDigest(String& buf, const String& secret, unsigned int t,
const SocketAddr& addr)
{
String tmp;
tmp << addr.host() << secret << addr.port() << t;
MD5 md5(tmp);
buf << md5.hexDigest();
}
IAXEngine::IAXEngine(const char* iface, int port, u_int16_t transListCount, u_int16_t retransCount, u_int16_t retransInterval,
u_int16_t authTimeout, u_int16_t transTimeout, u_int16_t maxFullFrameDataLen,
u_int32_t format, u_int32_t capab, u_int32_t trunkSendInterval, bool authRequired,
NamedList* params)
: Mutex(true,"IAXEngine"),
m_lastGetEvIndex(0),
m_authRequired(authRequired),
m_maxFullFrameDataLen(maxFullFrameDataLen),
m_startLocalCallNo(0),
m_transListCount(0),
m_retransCount(retransCount),
m_retransInterval(retransInterval),
m_authTimeout(authTimeout),
m_transTimeout(transTimeout),
m_callToken(false),
m_callTokenAge(10),
m_showCallTokenFailures(false),
m_printMsg(true),
m_format(format),
m_formatVideo(0),
m_capability(capab),
m_mutexTrunk(true,"IAXEngine::Trunk"),
m_trunkSendInterval(trunkSendInterval)
{
debugName("iaxengine");
Debug(this,DebugAll,"Automatically request authentication set to '%s'.",
(authRequired?"YES":"NO"));
if ((port <= 0) || port > 65535)
port = 4569;
if (transListCount < 4)
transListCount = 4;
else if (transListCount > 256)
transListCount = 256;
m_transList = new ObjList*[transListCount];
int i;
for (i = 0; i < transListCount; i++)
m_transList[i] = new ObjList;
m_transListCount = transListCount;
for(i = 0; i <= IAX2_MAX_CALLNO; i++)
m_lUsedCallNo[i] = false;
if (params)
m_callTokenSecret = params->getValue("calltoken_secret");
if (!m_callTokenSecret)
for (i = 0; i < 3; i++)
m_callTokenSecret << (int)(Random::random() ^ Time::now());
m_socket.create(AF_INET,SOCK_DGRAM);
SocketAddr addr(AF_INET);
addr.host(iface);
addr.port(port);
m_socket.setBlocking(false);
bool ok = m_socket.bind(addr);
if (!ok) {
bool force = !params || params->getBoolValue("force_bind",true);
String tmp;
Thread::errorString(tmp,m_socket.error());
Debug(this,DebugWarn,"Failed to bind socket on '%s:%d'%s. %d: '%s'",
c_safe(iface),port,force ? " - trying a random port" : "",
m_socket.error(),tmp.c_str());
if (force) {
addr.port(0);
ok = m_socket.bind(addr);
if (!ok)
Debug(this,DebugWarn,"Failed to bind on any port");
else {
ok = m_socket.getSockName(addr);
if (!ok)
Debug(this,DebugWarn,"Failed to retrieve bound address");
}
}
}
if (ok)
Debug(this,DebugInfo,"Bound on '%s:%d'",addr.host().c_str(),addr.port());
m_startLocalCallNo = 1 + (u_int16_t)(Random::random() % IAX2_MAX_CALLNO);
if (m_startLocalCallNo < IAX2_MIN_CALLNO)
m_startLocalCallNo = IAX2_MIN_CALLNO;
if (params)
initialize(*params);
else
initialize(NamedList::empty());
}
IAXEngine::~IAXEngine()
{
for (int i = 0; i < m_transListCount; i++)
TelEngine::destruct(m_transList[i]);
delete[] m_transList;
}
IAXTransaction* IAXEngine::addFrame(const SocketAddr& addr, IAXFrame* frame)
{
if (!frame)
return 0;
IAXTransaction* tr;
ObjList* l;
Lock lock(this);
// Transaction exists for this frame?
// Incomplete transactions. They MUST receive a full frame
IAXFullFrame* fullFrame = frame->fullFrame();
if (fullFrame) {
l = m_incompleteTransList.skipNull();
for (; l; l = l->next()) {
tr = static_cast<IAXTransaction*>(l->get());
if (!(tr && tr->localCallNo() == fullFrame->destCallNo() && addr == tr->remoteAddr()))
continue;
// Incomplete outgoing receiving call token
if (fullFrame->type() == IAXFrame::IAX &&
fullFrame->subclass() == IAXControl::CallToken) {
RefPointer<IAXTransaction> t = tr;
lock.drop();
if (!t)
return 0;
fullFrame->updateIEList(true);
IAXIEList* list = fullFrame->ieList();
DataBlock db;
if (list)
list->getBinary(IAXInfoElement::CALLTOKEN,db);
t->processCallToken(db);
t = 0;
return 0;
}
// Complete transaction
if (tr->processFrame(frame)) {
tr->m_rCallNo = frame->sourceCallNo();
m_incompleteTransList.remove(tr,false);
m_transList[frame->sourceCallNo() % m_transListCount]->append(tr);
XDebug(this,DebugAll,"New incomplete outgoing transaction completed (%u,%u)",
tr->localCallNo(),tr->remoteCallNo());
return tr;
}
break;
}
}
// Complete transactions
l = m_transList[frame->sourceCallNo() % m_transListCount];
for (; l; l = l->next()) {
tr = static_cast<IAXTransaction*>(l->get());
if (!(tr && tr->remoteCallNo() == frame->sourceCallNo()))
continue;
// Mini frame
if (!fullFrame) {
if (addr == tr->remoteAddr()) {
// keep transaction referenced but unlock the engine
RefPointer<IAXTransaction> t = tr;
lock.drop();
return t ? t->processFrame(frame) : 0;
}
continue;
}
// Full frame
// Has a local number assigned? If not, test socket
if (fullFrame->destCallNo() || addr == tr->remoteAddr()) {
// keep transaction referenced but unlock the engine
RefPointer<IAXTransaction> t = tr;
lock.drop();
return t ? t->processFrame(frame) : 0;
}
}
// Frame doesn't belong to an existing transaction
// Test if it is a full frame with an IAX control message that needs a new transaction
if (!fullFrame || frame->type() != IAXFrame::IAX)
return 0;
switch (fullFrame->subclass()) {
case IAXControl::New:
if (!checkCallToken(addr,*fullFrame))
return 0;
case IAXControl::RegReq:
case IAXControl::RegRel:
case IAXControl::Poke:
break;
case IAXControl::Inval:
// These are often used as keepalives
return 0;
case IAXControl::FwDownl:
default:
#ifdef DEBUG
if (fullFrame) {
if (fullFrame->destCallNo() == 0)
Debug(this,DebugAll,"Unsupported incoming transaction Frame(%u,%u). Source call no: %u",
frame->type(),fullFrame->subclass(),fullFrame->sourceCallNo());
#ifdef XDEBUG
else
Debug(this,DebugAll,"Unmatched Frame(%u,%u) for (%u,%u)",
frame->type(),fullFrame->subclass(),fullFrame->destCallNo(),fullFrame->sourceCallNo());
#endif
}
#endif
return 0;
}
// Generate local number
u_int16_t lcn = generateCallNo();
if (!lcn)
return 0;
// Create and add transaction
tr = IAXTransaction::factoryIn(this,fullFrame,lcn,addr);
if (tr)
m_transList[frame->sourceCallNo() % m_transListCount]->append(tr);
else
releaseCallNo(lcn);
return tr;
}
IAXTransaction* IAXEngine::addFrame(const SocketAddr& addr, const unsigned char* buf, unsigned int len)
{
IAXFrame* frame = IAXFrame::parse(buf,len,this,&addr);
if (!frame)
return 0;
if (m_printMsg && frame->fullFrame() && debugAt(DebugInfo)) {
String s;
SocketAddr local;
m_socket.getSockName(local);
frame->fullFrame()->toString(s,local,addr,true);
Debug(this,DebugInfo,"Received frame.%s",s.c_str());
}
IAXTransaction* tr = addFrame(addr,frame);
if (!tr)
frame->deref();
return tr;
}
bool IAXEngine::process()
{
bool ok = false;
for (;;) {
IAXEvent* event = getEvent(Time::msecNow());
if (!event)
break;
ok = true;
if ((event->final() && !event->frameType()) || !event->getTransaction()) {
XDebug(this,DebugAll,"Deleting internal event type %u Frame(%u,%u)",
event->type(),event->frameType(),event->subclass());
delete event;
continue;
}
processEvent(event);
}
return ok;
}
// (Re)Initialize the engine
void IAXEngine::initialize(const NamedList& params)
{
m_callToken = params.getBoolValue("calltoken_in");
int callTokenAge = params.getIntValue("calltoken_age",10);
if (callTokenAge > 1 && callTokenAge < 25)
m_callTokenAge = callTokenAge;
else
m_callTokenAge = 10;
m_showCallTokenFailures = params.getBoolValue("calltoken_printfailure");
m_rejectMissingCallToken = params.getBoolValue("calltoken_rejectmissing",true);
m_printMsg = params.getBoolValue("printmsg",true);
}
void IAXEngine::readSocket(SocketAddr& addr)
{
unsigned char buf[1500];
while (1) {
int len = m_socket.recvFrom(buf,sizeof(buf),addr);
if (len == Socket::socketError()) {
if (!m_socket.canRetry()) {
String tmp;
Thread::errorString(tmp,m_socket.error());
Debug(this,DebugWarn,"Socket read error: %s (%d)",
tmp.c_str(),m_socket.error());
}
Thread::idle(true);
continue;
}
addFrame(addr,buf,len);
}
}
bool IAXEngine::writeSocket(const void* buf, int len, const SocketAddr& addr,
IAXFullFrame* frame, unsigned int* sent)
{
if (m_printMsg && frame && debugAt(DebugInfo)) {
String s;
SocketAddr local;
m_socket.getSockName(local);
frame->toString(s,local,addr,false);
Debug(this,DebugInfo,"Sending frame.%s",s.c_str());
}
len = m_socket.sendTo(buf,len,addr);
if (len == Socket::socketError()) {
if (!m_socket.canRetry()) {
String tmp;
Thread::errorString(tmp,m_socket.error());
Debug(this,DebugWarn,"Socket write error: %s (%d)",
tmp.c_str(),m_socket.error());
}
#ifdef DEBUG
else {
String tmp;
Thread::errorString(tmp,m_socket.error());
Debug(this,DebugMild,"Socket temporary unavailable: %s (%d)",
tmp.c_str(),m_socket.error());
}
#endif
return false;
}
if (sent)
*sent = (unsigned int)len;
return true;
}
void IAXEngine::runGetEvents()
{
while (1) {
if (!process()) {
Thread::idle(true);
continue;
}
}
}
void IAXEngine::removeTransaction(IAXTransaction* transaction)
{
if (!transaction)
return;
Lock lock(this);
releaseCallNo(transaction->localCallNo());
if (!m_incompleteTransList.remove(transaction,false)) {
if (m_transList[transaction->remoteCallNo() % m_transListCount]->remove(transaction,false)) {
DDebug(this,DebugAll,"Transaction(%u,%u) removed",
transaction->localCallNo(),transaction->remoteCallNo());
}
else {
DDebug(this,DebugAll,"Trying to remove transaction(%u,%u) but does not exist",
transaction->localCallNo(),transaction->remoteCallNo());
}
}
else {
DDebug(this,DebugAll,"Transaction(%u,%u) (incomplete outgoing) removed",
transaction->localCallNo(),transaction->remoteCallNo());
}
}
u_int32_t IAXEngine::transactionCount()
{
u_int32_t n = 0;
Lock lock(this);
// Incomplete transactions
n += m_incompleteTransList.count();
// Complete transactions
for (int i = 0; i < m_transListCount; i++)
n += m_transList[i]->count();
return n;
}
void IAXEngine::keepAlive(SocketAddr& addr)
{
#if 0
unsigned char buf[12] = {0x80,0,0,0,0,0,0,0,0,0,IAXFrame::IAX,IAXControl::Inval};
writeSocket(buf,sizeof(buf),addr);
#endif
IAXFullFrame* f = new IAXFullFrame(IAXFrame::IAX,IAXControl::Inval,0,0,0,0,0);
writeSocket(f->data().data(),f->data().length(),addr,f);
f->deref();
}
bool IAXEngine::processTrunkFrames(u_int32_t time)
{
Lock lock(&m_mutexTrunk);
bool sent = false;
for (ObjList* l = m_trunkList.skipNull(); l; l = l->skipNext()) {
IAXMetaTrunkFrame* frame = static_cast<IAXMetaTrunkFrame*>(l->get());
// Frame has mini frame(s) ?
if (!frame->timestamp())
continue;
int32_t interval = time - frame->timestamp();
if (!interval || (interval && (u_int32_t)interval < m_trunkSendInterval))
continue;
// If the time wrapped around, send it. Worst case: we'll send an empty frame
frame->send(time);
sent = true;
}
return sent;
}
void IAXEngine::processEvent(IAXEvent* event)
{
XDebug(this,DebugAll,"Default processing - deleting event %p Subclass %u",
event,event->subclass());
delete event;
}
IAXEvent* IAXEngine::getEvent(u_int64_t time)
{
IAXTransaction* tr;
IAXEvent* ev;
ObjList* l;
lock();
// Find for incomplete transactions
l = m_incompleteTransList.skipNull();
for (; l; l = l->next()) {
tr = static_cast<IAXTransaction*>(l->get());
if (tr && 0 != (ev = tr->getEvent(time))) {
unlock();
return ev;
}
continue;
}
// Find for complete transactions, start with current index
while (m_lastGetEvIndex < m_transListCount) {
l = m_transList[m_lastGetEvIndex++]->skipNull();
if (!l)
continue;
ListIterator iter(*l);
for (;;) {
tr = static_cast<IAXTransaction*>(iter.get());
// end of iteration?
if (!tr)
break;
RefPointer<IAXTransaction> t = tr;
// dead pointer?
if (!t)
continue;
unlock();
if (0 != (ev = t->getEvent(time)))
return ev;
lock();
}
}
m_lastGetEvIndex = 0;
unlock();
return 0;
}
//TODO: Optimize generateCallNo & releaseCallNo
u_int16_t IAXEngine::generateCallNo()
{
u_int16_t i;
m_startLocalCallNo++;
if (m_startLocalCallNo > IAX2_MAX_CALLNO)
m_startLocalCallNo = IAX2_MIN_CALLNO;
for (i = m_startLocalCallNo; i <= IAX2_MAX_CALLNO; i++)
if (!m_lUsedCallNo[i]) {
m_lUsedCallNo[i] = true;
return i;
}
for (i = IAX2_MIN_CALLNO; i < m_startLocalCallNo; i++)
if (!m_lUsedCallNo[i]) {
m_lUsedCallNo[i] = true;
return i;
}
Debug(this,DebugWarn,"Unable to generate call number. Transaction count: %u",transactionCount());
return 0;
}
void IAXEngine::releaseCallNo(u_int16_t lcallno)
{
m_lUsedCallNo[lcallno] = false;
}
IAXTransaction* IAXEngine::startLocalTransaction(IAXTransaction::Type type, const SocketAddr& addr, IAXIEList& ieList, bool trunking)
{
Lock lock(this);
u_int16_t lcn = generateCallNo();
if (!lcn)
return 0;
IAXTransaction* tr = IAXTransaction::factoryOut(this,type,lcn,addr,ieList);
if (tr) {
m_incompleteTransList.append(tr);
if (trunking)
enableTrunking(tr);
}
else
releaseCallNo(lcn);
return tr;
}
// Check call token on incoming call requests.
bool IAXEngine::checkCallToken(const SocketAddr& addr, IAXFullFrame& frame)
{
XDebug(this,DebugAll,"IAXEngine::checkCallToken('%s:%d') calltoken=%u",
addr.host().c_str(),addr.port(),m_callToken);
if (!m_callToken)
return true;
frame.updateIEList(true);
IAXIEList* list = frame.ieList();
IAXInfoElementBinary* ct = 0;
if (list)
ct = static_cast<IAXInfoElementBinary*>(list->getIE(IAXInfoElement::CALLTOKEN));
// No call token support
if (!ct) {
if (m_showCallTokenFailures)
Debug(this,DebugNote,
"Missing required %s parameter in call request %u from '%s:%d'",
IAXInfoElement::ieText(IAXInfoElement::CALLTOKEN),frame.sourceCallNo(),
addr.host().c_str(),addr.port());
if (m_rejectMissingCallToken) {
IAXIEList* ies = new IAXIEList;
ies->appendString(IAXInfoElement::CAUSE,"CALLTOKEN support required");
IAXFullFrame* rsp = new IAXFullFrame(IAXFrame::IAX,IAXControl::Reject,
IAX2_CALLTOKEN_REJ_CALLNO,frame.sourceCallNo(),0,1,2,
ies,maxFullFrameDataLen());
writeSocket(addr,rsp);
TelEngine::destruct(rsp);
}
return false;
}
// Request with call token
if (ct->data().length()) {
String tmp((char*)ct->data().data(),ct->data().length());
int age = addrSecretAge(tmp,m_callTokenSecret,addr);
XDebug(this,DebugAll,"Call request %u from '%s:%d' with call token age=%d",
frame.sourceCallNo(),addr.host().c_str(),addr.port(),age);
if (age >= 0 && age <= m_callTokenAge)
return true;
if (m_showCallTokenFailures)
Debug(this,DebugNote,
"Ignoring call request %u from '%s:%d' with %s call token age=%d",
frame.sourceCallNo(),addr.host().c_str(),addr.port(),
(age > 0) ? "old" : "invalid",age);
return false;
}
// Request with empty call token: send one
String tmp;
buildAddrSecret(tmp,m_callTokenSecret,addr);
IAXIEList* ies = new IAXIEList;
ies->appendBinary(IAXInfoElement::CALLTOKEN,(unsigned char*)tmp.c_str(),tmp.length());
IAXFullFrame* rsp = new IAXFullFrame(IAXFrame::IAX,IAXControl::CallToken,
IAX2_CALLTOKEN_CALLNO,frame.sourceCallNo(),0,1,1,ies,maxFullFrameDataLen());
writeSocket(addr,rsp);
TelEngine::destruct(rsp);
return false;
}
bool IAXEngine::acceptFormatAndCapability(IAXTransaction* trans, unsigned int* caps, int type)
{
if (!trans)
return false;
u_int32_t transCapsNonType = IAXFormat::clear(trans->m_capability,type);
IAXFormat* fmt = trans->getFormat(type);
if (!fmt) {
DDebug(this,DebugStub,"acceptFormatAndCapability() No media %s in transaction",
IAXFormat::typeName(type));
trans->m_capability = transCapsNonType;
return false;
}
u_int32_t transCapsType = IAXFormat::mask(trans->m_capability,type);
u_int32_t capability = transCapsType & m_capability;
if (caps)
capability &= IAXFormat::mask(*caps,type);
trans->m_capability = transCapsNonType | capability;
XDebug(this,DebugAll,
"acceptFormatAndCapability trans(%u,%u) type=%s caps(trans/our/param/result)=%u/%u/%u/%u",
trans->localCallNo(),trans->remoteCallNo(),
fmt->typeName(),transCapsType,IAXFormat::mask(m_capability,type),
caps ? IAXFormat::mask(*caps,type) : 0,capability);
// Valid capability ?
if (!capability) {
// Warn if we should have media
if (type == IAXFormat::Audio || 0 != (trans->outgoing() ? fmt->in() : fmt->out()))
Debug(this,DebugNote,"Transaction(%u,%u) no common format(s) for media '%s' [%p]",
trans->localCallNo(),trans->remoteCallNo(),fmt->typeName(),trans);
// capability is 0, use it to set format
if (trans->outgoing())
fmt->set(&capability,&capability,0);
else
fmt->set(&capability,0,&capability);
return false;
}
u_int32_t format = fmt->format();
// Received format is valid ?
if (0 == (format & capability)) {
format = (type == IAXFormat::Audio) ? m_format : 0;
format = IAXFormat::pickFormat(capability,format);
}
if (format) {
fmt->set(&format,&format,&format);
Debug(this,DebugAll,"Transaction(%u,%u) set format %u (%s) for media '%s' [%p]",
trans->localCallNo(),trans->remoteCallNo(),format,fmt->formatName(),
fmt->typeName(),trans);
}
else
Debug(this,DebugNote,
"Transaction(%u,%u) failed to choose a common format for media '%s' [%p]",
trans->localCallNo(),trans->remoteCallNo(),fmt->typeName(),trans);
return format != 0;
}
void IAXEngine::defaultEventHandler(IAXEvent* event)
{
DDebug(this,DebugAll,"defaultEventHandler - Event type: %u. Frame - Type: %u Subclass: %u",
event->type(),event->frameType(),event->subclass());
IAXTransaction* tr = event->getTransaction();
switch (event->type()) {
case IAXEvent::New:
tr->sendReject("Feature not implemented or unsupported");
break;
default: ;
}
}
void IAXEngine::enableTrunking(IAXTransaction* trans)
{
if (!trans || trans->type() != IAXTransaction::New)
return;
Lock lock(&m_mutexTrunk);
IAXMetaTrunkFrame* frame;
// Already enabled ?
for (ObjList* l = m_trunkList.skipNull(); l; l = l->next()) {
frame = static_cast<IAXMetaTrunkFrame*>(l->get());
if (frame && frame->addr() == trans->remoteAddr()) {
trans->enableTrunking(frame);
return;
}
}
frame = new IAXMetaTrunkFrame(this,trans->remoteAddr());
if (trans->enableTrunking(frame))
m_trunkList.append(frame);
// Deref frame: Only transactions are allowed to keep references for it
frame->deref();
}
void IAXEngine::removeTrunkFrame(IAXMetaTrunkFrame* trunkFrame)
{
Lock lock(&m_mutexTrunk);
m_trunkList.remove(trunkFrame,false);
}
void IAXEngine::runProcessTrunkFrames()
{
while (1) {
processTrunkFrames();
Thread::msleep(2,true);
}
}
void IAXEngine::getMD5FromChallenge(String& md5data, const String& challenge, const String& password)
{
MD5 md5;
md5 << challenge << password;
md5data = md5.hexDigest();
}
bool IAXEngine::isMD5ChallengeCorrect(const String& md5data, const String& challenge, const String& password)
{
MD5 md5;
md5 << challenge << password;
return md5data == md5.hexDigest();
}
// Build a time signed secret used to authenticate an IP address
void IAXEngine::buildAddrSecret(String& buf, const String& secret, const SocketAddr& addr)
{
unsigned int t = Time::secNow();
buildSecretDigest(buf,secret,t,addr);
buf << "." << t;
}
// Decode a secret built using buildAddrSecret()
int IAXEngine::addrSecretAge(const String& buf, const String& secret, const SocketAddr& addr)
{
int pos = buf.find('.');
if (pos < 1)
return -1;
int t = buf.substr(pos + 1).toInteger();
String tmp;
buildSecretDigest(tmp,secret,t,addr);
return (tmp == buf.substr(0,pos)) ? ((int)Time::secNow() - t) : -1;
}
/*
* IAXEvent
*/
IAXEvent::IAXEvent(Type type, bool local, bool final, IAXTransaction* transaction, u_int8_t frameType, u_int32_t subclass)
: m_type(type), m_frameType(frameType), m_subClass(subclass),
m_local(local), m_final(final), m_transaction(0), m_ieList(0)
{
if (transaction && transaction->ref())
m_transaction = transaction;
m_ieList = new IAXIEList;
}
IAXEvent::IAXEvent(Type type, bool local, bool final, IAXTransaction* transaction, IAXFullFrame* frame)
: m_type(type), m_frameType(0), m_subClass(0), m_local(local),
m_final(final), m_transaction(0), m_ieList(0)
{
if (transaction && transaction->ref())
m_transaction = transaction;
if (frame) {
m_frameType = frame->type();
m_subClass = frame->subclass();
frame->updateIEList(true);
m_ieList = frame->removeIEList(false);
}
if (!m_ieList)
m_ieList = new IAXIEList;
}
IAXEvent::~IAXEvent()
{
if (m_final && m_transaction && m_transaction->state() == IAXTransaction::Terminated)
m_transaction->getEngine()->removeTransaction(m_transaction);
if (m_transaction) {
m_transaction->eventTerminated(this);
m_transaction->deref();
}
if (m_ieList)
delete m_ieList;
}
/* vi: set ts=8 sw=4 sts=4 noet: */
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