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RasSrv.cxx
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//////////////////////////////////////////////////////////////////
//
// RAS Server for GNU Gatekeeper
//
// Copyright (c) 2000-2025, Jan Willamowius
// Copyright (c) Citron Network Inc. 2001-2003
//
// This work is published under the GNU Public License version 2 (GPLv2)
// see file COPYING for details.
// We also explicitly grant the right to link this code
// with the OpenH323/H323Plus and OpenSSL library.
//
//////////////////////////////////////////////////////////////////
#include "config.h"
#ifdef __GNU_LIBRARY__
#include <malloc.h> // for malloc_trim()
#endif
#include <ptlib.h>
#include <ptlib/sockets.h>
#include <ptclib/enum.h>
#include <h225.h>
#include <h323pdu.h>
#include "gk.h"
#include "gk_const.h"
#include "stl_supp.h"
#include "RasPDU.h"
#include "RasTbl.h"
#include "SoftPBX.h"
#include "Routing.h"
#include "GkClient.h"
#include "GkStatus.h"
#include "Neighbor.h"
#include "ProxyChannel.h"
#include "h323util.h"
#include "gkauth.h"
#include "gkacct.h"
#include "gktimer.h"
#include "RasSrv.h"
#ifdef HAS_AVAYA_SUPPORT
#include "avaya.h"
#endif
#ifdef HAS_H460
#include <h460/h4601.h>
#ifdef HAS_H46018
#include <h460/h46018.h>
#endif
#endif
const char * OID_TSSM = "0.0.8.235.0.4.79";
const char *LRQFeaturesSection = "RasSrv::LRQFeatures";
const char *RRQFeatureSection = "RasSrv::RRQFeatures";
using namespace std;
using Routing::Route;
class RegistrationRequestPDU : public RasPDU<H225_RegistrationRequest> {
public:
RegistrationRequestPDU(GatekeeperMessage *m) : RasPDU<H225_RegistrationRequest>(m) { }
// override from class RasPDU<H225_RegistrationRequest>
virtual bool Process();
struct Creator : public RasPDU<H225_RegistrationRequest>::Creator {
virtual RasMsg *operator()(GatekeeperMessage *m) const { return new RegistrationRequestPDU(m); }
};
private:
bool BuildRCF(const endptr & ep, bool additiveRegistration = false);
bool BuildRRJ(unsigned reason, bool alt = false);
};
class AdmissionRequestPDU : public RasPDU<H225_AdmissionRequest> {
public:
AdmissionRequestPDU(GatekeeperMessage *m) : RasPDU<H225_AdmissionRequest>(m) {}
// override from class RasPDU<H225_AdmissionRequest>
virtual bool Process();
struct Creator : public RasPDU<H225_AdmissionRequest>::Creator {
virtual RasMsg *operator()(GatekeeperMessage *m) const { return new AdmissionRequestPDU(m); }
};
private:
enum {
e_acf = -1,
e_routeRequest = -2
};
bool BuildReply(int reason, bool h460 = false, CallRec * rec = NULL);
/** @return
A string that can be used to identify a calling number.
*/
PString GetCallingStationId(
/// additional data, like call record and requesting endpoint
ARQAuthData & authData
) const;
/** @return
A string that can be used to identify a calling number.
*/
PString GetCalledStationId(
/// additional data, like call record and requesting endpoint
ARQAuthData & authData
) const;
/** @return
A string that can be used to identify the billing number.
*/
PString GetCallLinkage(
/// additional data, like call record and requesting endpoint
ARQAuthData & authData
) const;
endptr RequestingEP, CalledEP;
PString destinationString;
PStringList Language;
};
template<> H225_NonStandardParameter *RasPDU<H225_UnknownMessageResponse>::GetNonStandardParam()
{
return NULL;
}
// RAS message abbreviations
const char *RasName[] = {
"GRQ", // Gatekeeper Request
"GCF", // Gatekeeper Confirm
"GRJ", // Gatekeeper Reject
"RRQ", // Registration Request
"RCF", // Registration Confirm
"RRJ", // Registration Reject
"URQ", // Unregistration Request
"UCF", // Unregistration Confirm
"URJ", // Unregistration Reject
"ARQ", // Admission Request
"ACF", // Admission Confirm
"ARJ", // Admission Reject
"BRQ", // Bandwidth Request
"BCF", // Bandwidth Confirm
"BRJ", // Bandwidth Reject
"DRQ", // Disengage Request
"DCF", // Disengage Confirm
"DRJ", // Disengage Reject
"LRQ", // Location Request
"LCF", // Location Confirm
"LRJ", // Location Reject
"IRQ", // Information Request
"IRR", // Information Request Response
"NonStandardMessage", // Non Standard Message
"UnknownMessageResponse", // Unknown Message Response
"RIP", // Request In Progress
"RAI", // Resources Available Indicate
"RAC", // Resources Available Confirm
"IACK", // Information Request Acknowledgment
"INAK", // Information Request Negative Acknowledgment
"SCI", // Service Control Indication
"SCR", // Service Control Response
"NotRecognized" // for new messages not recognized by the supported
// H.323 version
};
// struct GatekeeperMessage
const char *GatekeeperMessage::GetTagName() const
{
return (GetTag() <= MaxRasTag) ? RasName[GetTag()] : RasName[MaxRasTag+1];
}
bool GatekeeperMessage::Read(RasListener * socket)
{
m_socket = socket;
const int buffersize = 4096;
BYTE buffer[buffersize];
if (!socket->Read(buffer, buffersize)) {
if (socket->GetErrorCode(PSocket::LastReadError) != PSocket::NoError) {
PTRACE(1, "RAS\tRead error " << socket->GetErrorCode(PSocket::LastReadError)
<< '/' << socket->GetErrorNumber(PSocket::LastReadError) << ": "
<< socket->GetErrorText(PSocket::LastReadError));
SNMP_TRAP(10, SNMPError, Network, "RAS read error : " + socket->GetErrorText(PSocket::LastReadError));
}
return false;
}
socket->GetLastReceiveAddress(m_peerAddr, m_peerPort);
UnmapIPv4Address(m_peerAddr);
PTRACE(2, "RAS\tRead from " << AsString(m_peerAddr, m_peerPort));
m_rasPDU = PPER_Stream(buffer, socket->GetLastReadCount());
bool result = m_recvRAS.Decode(m_rasPDU);
PTRACE_IF(1, !result, "RAS\tError: Could not decode message from " << AsString(m_peerAddr, m_peerPort));
return result;
}
#ifdef HAS_H46017
bool GatekeeperMessage::Read(const PBYTEArray & buffer)
{
m_rasPDU = PPER_Stream(buffer);
bool result = m_recvRAS.Decode(m_rasPDU);
PTRACE_IF(1, !result, "RAS\tCould not decode H.460.17 message");
return result;
}
#endif
bool GatekeeperMessage::Reply(GkH235Authenticators * authenticators)
{
#ifdef HAS_H46017
if (m_h46017Socket) {
return m_h46017Socket->SendH46017Message(m_replyRAS, authenticators);
}
#endif
if (m_socket) {
return m_socket->SendRas(m_replyRAS, m_peerAddr, m_peerPort, authenticators);
} else {
return false;
}
}
// class RasListener
RasListener::RasListener(const Address & addr, WORD pt) : UDPSocket(0, addr.GetVersion() == 6 ? AF_INET6 : AF_INET), m_ip(addr)
{
if (!Listen(addr, 0, pt, PSocket::CanReuseAddress)) {
PTRACE(1, "RAS\tCould not open listening socket at " << AsString(addr, pt)
<< " - error " << GetErrorCode(PSocket::LastGeneralError) << '/'
<< GetErrorNumber(PSocket::LastGeneralError) << ": "
<< GetErrorText(PSocket::LastGeneralError)
);
Close();
}
SetWriteTimeout(1000);
SetName(AsString(addr, pt) + "(U)");
if (Toolkit::Instance()->IsPortNotificationActive())
Toolkit::Instance()->PortNotification(RASPort, PortOpen, "udp", addr, pt);
m_signalPort = 0;
#ifdef HAS_TLS
m_tlsSignalPort = 0;
#endif
// note: this won't be affected by reloading
m_virtualInterface = (!GkConfig()->GetString("NetworkInterfaces", "").IsEmpty());
// Check if we have external IP setting
if (!m_virtualInterface) {
m_virtualInterface = (!Toolkit::Instance()->GetExternalIP().IsEmpty());
}
}
RasListener::~RasListener()
{
if (Toolkit::Instance()->IsPortNotificationActive())
Toolkit::Instance()->PortNotification(RASPort, PortClose, "udp", m_ip, GetPort());
PTRACE(1, "RAS\tDelete listener " << GetName());
}
GatekeeperMessage *RasListener::ReadRas()
{
PTRACE(4, "RAS\tReceiving on " << GetName());
GatekeeperMessage *msg = new GatekeeperMessage();
if (!(msg->Read(this) && Filter(msg))) {
delete msg;
return NULL;
}
if ((msg->GetTag() != H225_RasMessage::e_serviceControlIndication && msg->GetTag() != H225_RasMessage::e_serviceControlResponse)
|| PTrace::CanTrace(5)) {
if (PTrace::CanTrace(3))
PTRACE(3, "RAS\n" << setprecision(2) << msg->m_recvRAS);
else
PTRACE(2, "RAS\tReceived " << msg->GetTagName() << " from " << AsString(msg->m_peerAddr, msg->m_peerPort));
}
msg->m_localAddr = GetLocalAddr(msg->m_peerAddr);
return msg;
}
bool RasListener::SendRas(H225_RasMessage & rasobj, const Address & addr, WORD pt, GkH235Authenticators * auth)
{
if ( ((rasobj.GetTag() != H225_RasMessage::e_serviceControlIndication && rasobj.GetTag() != H225_RasMessage::e_serviceControlResponse) && PTrace::CanTrace(3))
|| PTrace::CanTrace(5))
PTRACE(3, "RAS\tSend to " << AsString(addr, pt) << '\n' << setprecision(2) << rasobj);
else
PTRACE(2, "RAS\tSend " << RasName[rasobj.GetTag()] << " to " << AsString(addr, pt));
PBYTEArray wtbuf(1024); // buffer with initial size 1024
PPER_Stream wtstrm(wtbuf);
rasobj.Encode(wtstrm);
wtstrm.CompleteEncoding();
// make sure buffer gets shrunk to size of encoded message, because we'll write it instead of the PPER_Stream
wtbuf.SetSize(wtstrm.GetSize());
if (auth != NULL)
auth->Finalise(rasobj, wtbuf);
m_wmutex.Wait();
//bool result = WriteTo(wtstrm.GetPointer(), wtstrm.GetSize(), addr, pt);
// must send PByteArray, with the updated H.235 hash; PPER_Stream doesn't seem to change
bool result = WriteTo(wtbuf.GetPointer(), wtbuf.GetSize(), addr, pt);
m_wmutex.Signal();
if (result)
PTRACE(5, "RAS\tSent Successful");
else {
PTRACE(1, "RAS\tWrite error " << GetErrorCode(PSocket::LastWriteError) << '/'
<< GetErrorNumber(PSocket::LastWriteError) << ": "
<< GetErrorText(PSocket::LastWriteError)
);
SNMP_TRAP(10, SNMPError, Network, "RAS write error: " + GetErrorText(PSocket::LastWriteError));
}
return result;
}
PIPSocket::Address RasListener::GetPhysicalAddr(const Address & /* addr */) const
{
// Return the physical address. This is used when setting sockets
return m_ip;
}
PIPSocket::Address RasListener::GetLocalAddr(const Address & addr) const
{
return m_virtualInterface ? Toolkit::Instance()->GetRouteTable()->GetLocalAddress(addr) : m_ip;
}
H225_TransportAddress RasListener::GetRasAddress(const Address & addr) const
{
return SocketToH225TransportAddr(GetLocalAddr(addr), GetPort());
}
H225_TransportAddress RasListener::GetCallSignalAddress(const Address & addr) const
{
return SocketToH225TransportAddr(GetLocalAddr(addr), m_signalPort);
}
bool RasListener::Filter(GatekeeperMessage *msg) const
{
unsigned tag = msg->GetTag();
if (tag <= MaxRasTag)
return true;
PTRACE(1, "RAS\tInvalid RAS message tag " << tag);
return false;
}
// class BroadcastListener
class BroadcastListener : public RasListener {
public:
BroadcastListener(WORD);
// override from class RasListener
virtual bool Filter(GatekeeperMessage *) const;
};
BroadcastListener::BroadcastListener(WORD pt) : RasListener(INADDR_ANY, pt)
{
SetName(AsString(INADDR_ANY, pt) + "(Bcast)");
m_virtualInterface = true;
}
bool BroadcastListener::Filter(GatekeeperMessage *msg) const
{
const unsigned tag = msg->GetTag();
if (tag == H225_RasMessage::e_gatekeeperRequest
|| tag == H225_RasMessage::e_locationRequest)
return true;
PTRACE(1, "RAS\tIgnoring broadcasted RAS message " << msg->GetTagName());
return false;
}
// class MulticastListener
class MulticastListener : public RasListener {
public:
MulticastListener(const Address &, WORD);
// override from class RasListener
virtual bool Filter(GatekeeperMessage *) const;
};
// we must listen to INADDR_ANY to get multicast packets, but we need to
// call setsockopt() for each IP so all interfaces join the multicast group (tested on Linux 2.6.x)
MulticastListener::MulticastListener(const Address & addr, WORD pt) : RasListener(INADDR_ANY, pt)
{
SetName(AsString(addr, pt) + "(Mcast)");
Address multiaddr(GkConfig()->GetString("MulticastGroup", GK_DEF_MULTICAST_GROUP));
struct ip_mreq mreq;
mreq.imr_multiaddr.s_addr = multiaddr;
mreq.imr_interface.s_addr = addr;
if (::setsockopt(GetHandle(), IPPROTO_IP, IP_ADD_MEMBERSHIP, (char *)&mreq, sizeof(mreq)) < 0) {
PTRACE(1, "RAS\tCan't join multicast group " << multiaddr);
Close();
}
port = pt;
}
bool MulticastListener::Filter(GatekeeperMessage * msg) const
{
unsigned tag = msg->GetTag();
if (tag == H225_RasMessage::e_gatekeeperRequest
|| tag == H225_RasMessage::e_locationRequest)
return true;
PTRACE(1, "RAS\tInvalid multicasted RAS message: " << msg->GetTagName());
return false;
}
// class RasMsg
void RasMsg::Exec()
{
PTRACE(1, "RAS\t" << m_msg->GetTagName() << " Received from " << AsString(m_msg->m_peerAddr, m_msg->m_peerPort));
if (Process()) {
Reply(m_authenticators);
}
}
bool RasMsg::IsFrom(const PIPSocket::Address & addr, WORD pt) const
{
return (addr == m_msg->m_peerAddr) && (pt == 0 || pt == m_msg->m_peerPort);
}
void RasMsg::GetRasAddress(H225_TransportAddress & result) const
{
result = SocketToH225TransportAddr(m_msg->m_localAddr, m_msg->m_socket ? m_msg->m_socket->GetPort() : 0);
}
void RasMsg::GetCallSignalAddress(H225_TransportAddress & result) const
{
#ifdef HAS_H46017
if (m_msg->m_h46017Socket)
result = SocketToH225TransportAddr(m_msg->m_localAddr, m_msg->m_h46017Socket->GetPort());
else
#endif
result = SocketToH225TransportAddr(m_msg->m_localAddr, m_msg->m_socket ? m_msg->m_socket->GetSignalPort() : 0);
}
/// Get an address the message has been received from
void RasMsg::GetPeerAddr(PIPSocket::Address & addr, WORD & port) const
{
addr = m_msg->m_peerAddr;
port = m_msg->m_peerPort;
}
void RasMsg::GetPeerAddr(PIPSocket::Address & addr) const
{
addr = m_msg->m_peerAddr;
}
bool RasMsg::EqualTo(const RasMsg *other) const
{
if (GetTag() != other->GetTag())
return false;
if (GetSeqNum() != other->GetSeqNum())
return false;
if ((m_msg->m_peerPort != other->m_msg->m_peerPort) || (m_msg->m_peerAddr != other->m_msg->m_peerAddr))
return false;
// should we check the whole PDU?
return true;
}
bool RasMsg::PrintStatus(const PString & log)
{
PTRACE(2, log);
// avoid printing on an already deleted status port
if (!IsGatekeeperShutdown()) {
GkStatus::Instance()->SignalStatus(log + "\r\n", STATUS_TRACE_LEVEL_RAS);
}
return true; // reply after logged
}
template<class ORAS, class DRAS>
inline void CopyNonStandardData(const ORAS & omsg, DRAS & dmsg)
{
if (omsg.HasOptionalField(ORAS::e_nonStandardData)) {
dmsg.IncludeOptionalField(DRAS::e_nonStandardData);
dmsg.m_nonStandardData = omsg.m_nonStandardData;
}
}
// template class RasPDU
template<class RAS>
H225_NonStandardParameter * RasPDU<RAS>::GetNonStandardParam()
{
return request.HasOptionalField(RAS::e_nonStandardData) ? &request.m_nonStandardData : NULL;
}
// template specialization for H225_NonStandardMessage which doesn't have e_nonStandardData
template<>
H225_NonStandardParameter * RasPDU<H225_NonStandardMessage>::GetNonStandardParam()
{
return NULL;
}
template<class RAS>
inline H225_RasMessage & RasPDU<RAS>::BuildConfirm()
{
typedef typename RasInfo<RAS>::ConfirmTag ConfirmTag;
typedef typename RasInfo<RAS>::ConfirmType ConfirmType;
unsigned tag = ConfirmTag();
if (m_msg->m_replyRAS.GetTag() != tag)
m_msg->m_replyRAS.SetTag(tag);
ConfirmType & confirm = m_msg->m_replyRAS;
confirm.m_requestSeqNum = request.m_requestSeqNum;
return m_msg->m_replyRAS;
}
template<class RAS>
inline H225_RasMessage & RasPDU<RAS>::BuildReject(unsigned reason)
{
typedef typename RasInfo<RAS>::RejectTag RejectTag;
typedef typename RasInfo<RAS>::RejectType RejectType;
unsigned tag = RejectTag();
if (m_msg->m_replyRAS.GetTag() != tag)
m_msg->m_replyRAS.SetTag(tag);
RejectType & reject = m_msg->m_replyRAS;
reject.m_requestSeqNum = request.m_requestSeqNum;
reject.m_rejectReason.SetTag(reason);
return m_msg->m_replyRAS;
}
// class GkInterface
GkInterface::GkInterface(const PIPSocket::Address & addr) : m_address(addr)
{
m_rasPort = m_multicastPort = m_signalPort = m_statusPort = 0;
m_rasListener = NULL;
m_multicastListener = NULL;
m_callSignalListener = NULL;
m_statusListener = NULL;
m_rasSrv = NULL;
#ifdef HAS_TLS
m_tlsSignalPort = 0;
m_tlsCallSignalListener = NULL;
#endif
#ifdef HAS_H46018
m_h245MultiplexPort = 0;
m_multiplexH245Listener = NULL;
#endif
}
GkInterface::~GkInterface()
{
// TODO/BUG: without LARGE_FDSET, closing RAS sockets may hang on ConfigReloadMutex
if (m_rasListener)
m_rasListener->Close();
if (m_multicastListener)
m_multicastListener->Close();
if (m_callSignalListener)
m_rasSrv->CloseListener(m_callSignalListener);
#ifdef HAS_TLS
if (m_tlsCallSignalListener)
m_rasSrv->CloseListener(m_tlsCallSignalListener);
#endif
#ifdef HAS_H46018
if (m_multiplexH245Listener)
m_rasSrv->CloseListener(m_multiplexH245Listener);
#endif
if (m_statusListener)
m_rasSrv->CloseListener(m_statusListener);
}
bool GkInterface::CreateListeners(RasServer *RasSrv)
{
m_rasSrv = RasSrv;
WORD rasPort = (WORD)GkConfig()->GetInteger("UnicastRasPort", GK_DEF_UNICAST_RAS_PORT);
WORD multicastPort = (WORD)(GkConfig()->GetBoolean("UseMulticastListener", true) ?
GkConfig()->GetInteger("MulticastPort", GK_DEF_MULTICAST_PORT) : 0);
WORD signalPort = (WORD)GkConfig()->GetInteger(RoutedSec, "CallSignalPort", GK_DEF_CALL_SIGNAL_PORT);
#ifdef HAS_TLS
WORD tlsSignalPort = (WORD)GkConfig()->GetInteger(RoutedSec, "TLSCallSignalPort", GK_DEF_TLS_CALL_SIGNAL_PORT);
#endif
#ifdef HAS_H46018
WORD h245MultiplexPort = (WORD)GkConfig()->GetInteger(RoutedSec, "H245MultiplexPort", GK_DEF_MULTIPLEX_H245_PORT);
#endif
WORD statusPort = (WORD)GkConfig()->GetInteger("StatusPort", GK_DEF_STATUS_PORT);
if (SetListener(rasPort, m_rasPort, m_rasListener, &GkInterface::CreateRasListener))
m_rasSrv->AddListener(m_rasListener);
if (SetListener(multicastPort, m_multicastPort, m_multicastListener, &GkInterface::CreateMulticastListener))
m_rasSrv->AddListener(m_multicastListener);
if (SetListener(signalPort, m_signalPort, m_callSignalListener, &GkInterface::CreateCallSignalListener))
m_rasSrv->AddListener(m_callSignalListener);
#ifdef HAS_TLS
if (Toolkit::Instance()->IsTLSEnabled()) {
if (SetListener(tlsSignalPort, m_tlsSignalPort, m_tlsCallSignalListener, &GkInterface::CreateTLSCallSignalListener)) {
m_rasSrv->AddListener(m_tlsCallSignalListener);
}
}
#endif
#ifdef HAS_H46018
if (GkConfig()->GetBoolean(RoutedSec, "EnableH245Multiplexing", false)) {
if (SetListener(h245MultiplexPort, m_h245MultiplexPort, m_multiplexH245Listener, &GkInterface::CreateMultiplexH245Listener)) {
m_rasSrv->AddListener(m_multiplexH245Listener);
}
}
#endif
if (statusPort > 0 && SetListener(statusPort, m_statusPort, m_statusListener, &GkInterface::CreateStatusListener))
m_rasSrv->AddListener(m_statusListener);
if (m_rasListener && m_callSignalListener) {
if (RasSrv->IsGKRouted()) {
m_rasListener->SetSignalPort(m_signalPort);
#ifdef HAS_TLS
if (m_tlsCallSignalListener)
m_rasListener->SetTLSSignalPort(m_tlsSignalPort);
#endif
if (m_multicastListener) {
m_multicastListener->SetSignalPort(m_signalPort);
}
} else {
RasSrv->CloseListener(m_callSignalListener);
m_callSignalListener = NULL;
#ifdef HAS_TLS
RasSrv->CloseListener(m_tlsCallSignalListener);
m_tlsCallSignalListener = NULL;
#endif
}
}
// TODO: implement switch for additional listen ports here
if (RasSrv->IsGKRouted()) {
return (m_rasListener != NULL) && (m_callSignalListener != NULL);
} else {
return m_rasListener != NULL;
}
}
bool GkInterface::IsReachable(const Address *addr) const
{
return Toolkit::Instance()->GetRouteTable(false)->GetLocalAddress(*addr) == m_address;
}
bool GkInterface::ValidateSocket(IPSocket *socket, WORD & port)
{
if (socket) {
if (socket->IsOpen()) {
PTRACE(1, "Listening to " << socket->GetName());
// get the real bound port
port = socket->GetPort();
return true;
} else {
PTRACE(1, "Can't listen to " << socket->GetName());
delete socket;
}
}
return false;
}
RasListener *GkInterface::CreateRasListener()
{
return new RasListener(m_address, m_rasPort);
}
MulticastListener *GkInterface::CreateMulticastListener()
{
return (m_multicastPort && !IsLoopback(m_address) && (m_address.GetVersion() != 6)) ? new MulticastListener(m_address, m_multicastPort) : 0;
}
CallSignalListener *GkInterface::CreateCallSignalListener()
{
return m_rasSrv->IsGKRouted() ? new CallSignalListener(m_address, m_signalPort) : NULL;
}
#ifdef HAS_TLS
TLSCallSignalListener *GkInterface::CreateTLSCallSignalListener()
{
return m_rasSrv->IsGKRouted() ? new TLSCallSignalListener(m_address, m_tlsSignalPort) : NULL;
}
#endif
#ifdef HAS_H46018
MultiplexH245Listener *GkInterface::CreateMultiplexH245Listener()
{
return m_rasSrv->IsGKRouted() ? new MultiplexH245Listener(m_address, m_h245MultiplexPort) : NULL;
}
#endif
StatusListener *GkInterface::CreateStatusListener()
{
return new StatusListener(m_address, m_statusPort);
}
// class RasHandler
RasHandler::RasHandler()
{
m_rasSrv = RasServer::Instance();
fill(m_tagArray, m_tagArray + MaxRasTag + 1, false);
// can't register now since virtual function table is not ready
//m_rasSrv->RegisterHandler(this);
}
bool RasHandler::IsExpected(const RasMsg *ras) const
{
return m_tagArray[ras->GetTag()];
}
void RasHandler::AddFilter(unsigned tag)
{
m_tagArray[tag] = true;
}
// class RasRequester
RasRequester::RasRequester(H225_RasMessage & req) : m_request(&req), m_loAddr(GNUGK_INADDR_ANY)
{
Init();
}
RasRequester::RasRequester(H225_RasMessage & req, const Address & addr) : m_request(&req), m_loAddr(addr)
{
Init();
}
void RasRequester::Init()
{
m_txPort = 0;
m_seqNum = m_rasSrv->GetRequestSeqNum();
m_timeout = 0;
m_retry = 0;
m_iterator = m_queue.end();
AddFilter(H225_RasMessage::e_requestInProgress);
}
RasRequester::~RasRequester()
{
m_sync.Signal();
DeleteObjectsInContainer(m_queue);
}
bool RasRequester::WaitForResponse(int timeout)
{
m_timeout = timeout;
while (m_iterator == m_queue.end()) {
int passed = (int)((PTime() - m_sentTime).GetMilliSeconds());
if (m_timeout > passed && m_sync.Wait(m_timeout - passed)) {
if (m_timeout > 0) {
continue;
} else {
break;
}
}
if (!OnTimeout()) {
break;
}
}
return m_iterator != m_queue.end();
}
RasMsg * RasRequester::GetReply()
{
PWaitAndSignal lock(m_qmutex);
return m_iterator != m_queue.end() ? *m_iterator++ : NULL;
}
bool RasRequester::IsExpected(const RasMsg * ras) const
{
return RasHandler::IsExpected(ras) && (ras->GetSeqNum() == m_seqNum) && ras->IsFrom(m_txAddr, m_txPort);
}
void RasRequester::Process(RasMsg * ras)
{
if (ras->GetTag() == H225_RasMessage::e_requestInProgress) {
H225_RequestInProgress & rip = (*ras)->m_recvRAS;
m_timeout = rip.m_delay;
m_sentTime = PTime();
delete ras;
ras = NULL;
} else {
AddReply(ras);
m_timeout = 0;
}
m_sync.Signal();
}
void RasRequester::Stop()
{
m_timeout = 0;
m_iterator = m_queue.end();
m_sync.Signal();
}
bool RasRequester::SendRequest(const PIPSocket::Address & addr, WORD pt, int retry)
{
m_txAddr = addr, m_txPort = pt, m_retry = retry;
m_sentTime = PTime();
return m_rasSrv->SendRas(*m_request, m_txAddr, m_txPort, m_loAddr, NULL); // TODO235
}
bool RasRequester::OnTimeout()
{
return m_retry > 0 ? SendRequest(m_txAddr, m_txPort, --m_retry) : false;
}
void RasRequester::AddReply(RasMsg *ras)
{
PWaitAndSignal lock(m_qmutex);
m_queue.push_back(ras);
if (m_iterator == m_queue.end())
--m_iterator;
}
// class RasServer
RasServer::RasServer() : Singleton<RasServer>("RasSrv")
{
SetName("RasSrv");
requestSeqNum = 0;
listeners = NULL;
broadcastListener = NULL;
sigHandler = NULL;
authList = NULL;
acctList = NULL;
gkClient = NULL;
neighbors = NULL;
vqueue = NULL;
GKRoutedSignaling = false;
GKRoutedH245 = false;
bRemoveCallOnDRQ = true;
altGKsSize = 0;
epLimit = callLimit = P_MAX_INDEX;
redirectGK = e_noRedirect;
}
RasServer::~RasServer()
{
delete authList;
delete acctList;
delete neighbors;
delete gkClient;
PWaitAndSignal lock(requests_mutex);
DeleteObjectsInContainer(requests);
}
void RasServer::Stop()
{
#ifndef hasPTLibTraceOnShutdownBug
PTRACE(1, "GK\tStopping RasServer...");
#endif
SNMP_TRAP(2, SNMPInfo, General, "GnuGk stopping");
PWaitAndSignal lock(m_deletionPreventer);
ForEachInContainer(handlers, mem_vfun(&RasHandler::Stop));
delete vqueue; // delete virtual queues before Jobs, otherwise the jobs will wait for the queues
vqueue = NULL;
RegularJob::Stop();
}
// set the signaling mode according to the config file
// don't change it if not specified in the config
void RasServer::SetRoutedMode()
{
if (GkConfig()->HasKey(RoutedSec, "GKRouted"))
GKRoutedSignaling = Toolkit::AsBool(GkConfig()->GetString(RoutedSec, "GKRouted", "0"));
if (GkConfig()->HasKey(RoutedSec, "H245Routed"))
GKRoutedH245 = Toolkit::AsBool(GkConfig()->GetString(RoutedSec, "H245Routed", "0"));
SetRoutedMode(GKRoutedSignaling, GKRoutedH245);
}
void RasServer::SetRoutedMode(bool routedSignaling, bool routedH245)
{
GKRoutedSignaling = routedSignaling;
if (GKRoutedSignaling) {
if (sigHandler)
sigHandler->LoadConfig();
else
sigHandler = new HandlerList();
} else {
// warning: dangerous
delete sigHandler;
sigHandler = NULL;
}
GKRoutedH245 = GKRoutedSignaling ? routedH245 : false;
const char *modemsg = GKRoutedSignaling ? "Routed" : "Direct";
const char *h245msg = GKRoutedH245 ? "Enabled" : "Disabled";
PTRACE(2, "GK\tUsing " << modemsg << " Signaling");
PTRACE(2, "GK\tH.245 Routed " << h245msg);
const char * h245tunnelingmsg = GkConfig()->GetBoolean("RoutedMode", "H245TunnelingTranslation", false) ? "Enabled" : "Disabled";
PTRACE(2, "GK\tH.245 tunneling translation " << h245tunnelingmsg);
#ifdef HAS_H46017
const char * h46017msg = GkConfig()->GetBoolean("RoutedMode", "EnableH46017", false) ? "Enabled" : "Disabled";
PTRACE(2, "GK\tH.460.17 Registrations " << h46017msg);
#endif
#ifdef HAS_H46018
const char * h46018msg = GkConfig()->GetBoolean("RoutedMode", "EnableH46018", false) ? "Enabled" : "Disabled";
PTRACE(2, "GK\tH.460.18 Registrations " << h46018msg);
#endif
}
void RasServer::SetENUMServers()
{
#if hasSETENUMSERVERS
PString servers = GkConfig()->GetString(RoutedSec, "ENUMservers", "");
PStringArray serverlist(servers.Tokenise(",", false));
if (serverlist.GetSize() > 0) {
PDNS::SetENUMServers(serverlist);
PTRACE(2, "GK\tLoaded ENUM servers " << serverlist);
} else {
PTRACE(2, "GK\tNo ENUMservers set, using defaults");
}
#else
#if P_DNS
PTRACE(2, "GK\tSetENUMServers not available, using defaults");
#else
PTRACE(2, "GK\tNo ENUM Routing policy available.");
#endif
#endif
}
void RasServer::SetRDSServers()
{
#if hasRDS
PString servers = GkConfig()->GetString(RoutedSec, "RDSservers", "");
PStringArray serverlist(servers.Tokenise(",", false));
if (serverlist.GetSize() > 0) {
PDNS::SetRDSServers(serverlist);
PTRACE(2, "GK\tLoaded RDS servers " << serverlist);
} else {
PTRACE(2, "GK\tNo RDSservers set, using defaults");
}
#else
PTRACE(2, "GK\tNo RDS Routing policy available.");
#endif
}
bool RasServer::AcceptUnregisteredCalls(const PIPSocket::Address & addr) const
{
if (Toolkit::AsBool(GkConfig()->GetString(RoutedSec, "AcceptUnregisteredCalls", "0")))
return true;
return Toolkit::AsBool(GkConfig()->GetString(RoutedSec, "AcceptNeighborsCalls", "1")) ? neighbors->CheckIP(addr) : false;
}
bool RasServer::AcceptPregrantedCalls(const H225_Setup_UUIE & setupBody, const PIPSocket::Address & addr) const
{
if (!GkConfig()->GetBoolean(RoutedSec, "PregrantARQ", false))
return false;
if (!setupBody.HasOptionalField(H225_Setup_UUIE::e_endpointIdentifier))
return false;
endptr ep = RegistrationTable::Instance()->FindByEndpointId(setupBody.m_endpointIdentifier);
if (ep) {
PIPSocket::Address epIP;
WORD epPort = 0;
if (GetIPAndPortFromTransportAddr(ep->GetCallSignalAddress(), epIP, epPort) && epIP == addr) {
PTRACE(3, "Q931\tAccepting pre-granted Call");
return true;
}
}
return false;
}
bool RasServer::IsCallFromTraversalClient(const PIPSocket::Address & addr) const
{
return neighbors->IsTraversalClient(addr);
}
bool RasServer::IsCallFromTraversalServer(const PIPSocket::Address & addr) const
{
return neighbors->IsTraversalServer(addr);
}
bool RasServer::RegisterHandler(RasHandler *handler)
{
PWaitAndSignal lock(handlers_mutex);
handlers.push_front(handler);
return true;
}
bool RasServer::UnregisterHandler(RasHandler *handler)
{
PWaitAndSignal lock(handlers_mutex);
handlers.remove(handler);
return true;
}
void RasServer::LoadConfig()
{
GetAlternateGK();
vector<Address> GKHome;
PString Home(Toolkit::Instance()->GetGKHome(GKHome));
PTRACE(2, "GK\tHome = " << Home);
bool bUseBroadcastListener = Toolkit::AsBool(GkConfig()->GetString("UseBroadcastListener", "1"));
int hsize = GKHome.size();
if (hsize == 0) {
PTRACE(1, "Error: No interface for RAS?");
SNMP_TRAP(10, SNMPError, Configuration, "No RAS interface");
return;
}
SocketsReader::CleanUp();
ifiterator it = interfaces.begin();
while (it != interfaces.end()) {
int i = -1;
while (++i < hsize)
if ((*it)->IsBoundTo(&GKHome[i]))
break;
if (i == hsize) {
// close unused listeners
GkInterface * r = *it;
it = interfaces.erase(it);
delete r;
}