first commit of chan_h323
authorJeremy McNamara <jj@nufone.net>
Mon, 31 Mar 2003 07:13:36 +0000 (07:13 +0000)
committerJeremy McNamara <jj@nufone.net>
Mon, 31 Mar 2003 07:13:36 +0000 (07:13 +0000)
git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@724 65c4cc65-6c06-0410-ace0-fbb531ad65f3

channels/h323/ChangeLog [new file with mode: 0755]
channels/h323/Makefile [new file with mode: 0755]
channels/h323/README [new file with mode: 0755]
channels/h323/TODO [new file with mode: 0755]
channels/h323/ast_h323.cpp [new file with mode: 0755]
channels/h323/ast_h323.h [new file with mode: 0755]
channels/h323/chan_h323.c [new file with mode: 0755]
channels/h323/chan_h323.h [new file with mode: 0755]
channels/h323/h323.conf.sample [new file with mode: 0755]

diff --git a/channels/h323/ChangeLog b/channels/h323/ChangeLog
new file mode 100755 (executable)
index 0000000..83bdff3
--- /dev/null
@@ -0,0 +1,39 @@
+Build
+0.1.0
+       -- Intergration into the mainline Asterisk codebase
+       -- Remove reduandant debug info
+       -- Add Caller*id support
+       -- Inband DTMF
+       -- Retool port usage (to avoid possible seg fault condition)
+0.0.6
+       -- Configurable support for user-input (DTMF)
+       -- Reworked Gatekeeper support
+       -- Native bridging (but is still broken, help!)
+       -- Locally implement a non-broken G.723.1 Capability
+       -- Utilize the cleaner RTP method implemented by Mark
+       -- AllowGkRouted, thanks to Panny from http://hotlinks.co.uk
+       -- Clened up inbound call flow
+       -- Prefix, E.164 and Gateway support
+       -- Multi-homed support
+       -- Killed more seg's 
+0.0.5
+       -- Added H.323 Alias support
+       -- Clened up inbound call flow
+       -- Fixed RTP port logic
+       -- Stomped on possible seg fault conditions thanks to Iain Stevenson 
+0.0.4
+        -- Fixed one-way audio on inbound calls. Found
+           race condition in monitor thread.
+
+0.0.3
+        -- Changed name to chan_h323
+        -- Also renamed file names to futher avoid confusion
+
+0.0.2
+        -- First public offering
+        -- removed most hardcoded values
+        -- lots of changes to alias/exension operation
+
+0.0.1
+        -- initial build, lots of hardcoded crap
+        -- Proof of concept for External RTP
diff --git a/channels/h323/Makefile b/channels/h323/Makefile
new file mode 100755 (executable)
index 0000000..3574500
--- /dev/null
@@ -0,0 +1,53 @@
+# include the Makefile of OpenH323 
+
+ifndef OPENH323DIR
+OPENH323DIR=$(HOME)/openh323
+endif
+
+ifndef PWLIBDIR
+PWLIBDIR=$(HOME)/pwlib
+endif
+
+ifndef ASTERISKDIR
+ASTERISKDIR= /usr/lib/asterisk/modules
+endif
+
+
+CFLAGS += -DNDEBUG -DDO_CRASH -DDEBUG_THREADS
+CFLAGS  = -pipe -Wall -fPIC -Wmissing-prototypes -Wmissing-declarations 
+CFLAGS += -DP_LINUX  -D_REENTRANT -D_GNU_SOURCE
+# This needs to be updated to deal with more than just little endian machines
+CFLAGS += -march=$(shell uname -m) -DPBYTE_ORDER=PLITTLE_ENDIAN
+CFLAGS += -DP_HAS_SEMAPHORES -DP_SSL -DP_PTHREADS
+CFLAGS += -DPHAS_TEMPLATES -DPTRACING -DP_USE_PRAGMA 
+CFLAGS += -I$(PWLIBDIR)/include/ptlib/unix -I$(PWLIBDIR)/include 
+CFLAGS += -I$(OPENH323DIR)/include -Wno-missing-prototypes -Wno-missing-declarations
+
+
+all: chan_h323.so
+
+noshared: chan_h323_s.so
+optnoshared: chan_h323_s.so
+debug: chan_h323_d.so
+
+
+install: all
+       install -m 755 chan_h323.so $(ASTERISKDIR)
+
+chan_h323.o:   chan_h323.c
+       $(CC) -g -c -o $@ $(CFLAGS) $<
+ast_h323.o:    ast_h323.cpp
+       g++ -g -c -o $@ $(CFLAGS) $<
+
+chan_h323.so:  chan_h323.o ast_h323.o
+       g++  -shared -Xlinker -x -o chan_h323.so chan_h323.o ast_h323.o -L$(PWLIBDIR)/lib  -lpt_linux_x86_r -L$(OPENH323DIR)/lib -lh323_linux_x86_r -L/usr/lib -lpthread -ldl -lcrypto -lssl -lexpat
+
+chan_h323_d.so:        chan_h323.o ast_h323.o
+       g++  -shared -Xlinker -x -o chan_h323.so chan_h323.o ast_h323.o -L$(PWLIBDIR)/lib  -lpt_linux_x86_d -L$(OPENH323DIR)/lib -lh323_linux_x86_d -L/usr/lib -lpthread -ldl -lcrypto -lssl -lexpat
+
+chan_h323_s.so:        chan_h323.o ast_h323.o
+       g++  -shared -Xlinker -x -o chan_h323.so chan_h323.o ast_h323.o -L$(PWLIBDIR)/lib  -lpt_linux_x86_r_s -L$(OPENH323DIR)/lib -lh323_linux_x86_r_s -L/usr/lib -lpthread -ldl -lcrypto -lssl -lexpat
+clean:
+       rm -f *.o *.so core.*
+
+
diff --git a/channels/h323/README b/channels/h323/README
new file mode 100755 (executable)
index 0000000..c56368f
--- /dev/null
@@ -0,0 +1,55 @@
+
+               Open H.323 Channel Driver for Asterisk
+                          By Jeremy McNamara  
+                             The NuFone Network
+
+            First public release on November 10th, 2002
+
+
+       Developed using:        RedHat 7.2/7.3/8.0
+                               Open H.323 v1.11.8              
+                               PWLib      v1.4.12
+                               GCC       2.96/3.1
+
+       Dependancies:           openssl-0.9.6b
+                               openssl-devel-0.9.6b
+                               expat-1.95
+
+Notice: Whatever you do, DO NOT USE distrubution specific installs
+of Open H.323 and PWLib. Check everything out of CVS. If you dont know
+how to deal with cvs, learn. Also, if you are not using the listed
+versions of Open H.323 or PWlib you are on your own, sorry. Older versions
+will NOT work, but newer versions ~should~ work.
+
+We have implemented this driver using Asterisk's RTP stack insted of trying
+to implement a psudo sound card driver. 
+If you have trouble please contact 'JerJer' in #Asterisk on irc.freenode.net or
+send and email to jj@indie.org
+
+If you happen to be lucky enough to segfault this code please run a backtrace 
+and send me the gory details. Segmentation faults are not tolerated!
+
+bt example:
+
+# /usr/sbin/asterisk -vvvgc
+...
+[chan_h323.so]
+Segmentation Fault (core dumped)
+
+# ls core.*
+core.1976
+
+# gdb /usr/sbin/asterisk core.1976
+...
+(gdb) bt
+
+Send whatever shows up right after the 'bt'
+
+
+Also, a full debug screen output is almost needed. Make sure you are in the full console mode (-c) and turn on 'h.323 
+debug'. A nice way to capture everything is to use the utility called 'script' (man script) 
+
+
+Jeremy McNamara, President
+The NuFone Network 
diff --git a/channels/h323/TODO b/channels/h323/TODO
new file mode 100755 (executable)
index 0000000..1514aef
--- /dev/null
@@ -0,0 +1,14 @@
+The NuFone Network's Open H.323 Channel Driver for Asterisk 
+            
+       TODO:
+
+               - Fix Gatekeeper re-registration seg (HELP)
+
+               - Track down why calls to invalid extensions always
+                 get sent to 's' in context 'default'
+
+               - H.323 Native Bridging
+
+               - Gatekeeping support (started)
+       
+
diff --git a/channels/h323/ast_h323.cpp b/channels/h323/ast_h323.cpp
new file mode 100755 (executable)
index 0000000..831092f
--- /dev/null
@@ -0,0 +1,1018 @@
+/*
+ * ast_h323.cpp
+ *
+ * OpenH323 Channel Driver for ASTERISK PBX.
+ *                     By  Jeremy McNamara
+ *                     For The NuFone Network
+ * 
+ * This code has been derived from code created by 
+ *             Michael Manousos and Mark Spencer
+ *
+ * This file is part of the chan_h323 driver for Asterisk
+ *
+ * chan_h323 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. 
+ *
+ * chan_h323 is distributed 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., 675 Mass Ave, Cambridge, MA 02139, USA. 
+ *
+ */
+#include "ast_h323.h"
+#include "h323t38.h"
+
+
+/* PWlib Required Components  */
+#define MAJOR_VERSION 0
+#define MINOR_VERSION 1
+#define BUILD_TYPE    ReleaseCode
+#define BUILD_NUMBER  0
+
+/** Counter for the number of connections */
+int channelsOpen;
+
+/* DTMF Mode */
+int mode = H323_DTMF_RFC2833;
+
+/** Options for connections creation */
+BOOL   noFastStart;
+BOOL   noH245Tunnelling;
+BOOL   noSilenceSuppression;
+WORD   jitter;
+
+/**
+ * We assume that only one endPoint should exist.
+ * The application cannot run the h323_end_point_create() more than once
+ * FIXME: Singleton this, for safety
+ */
+MyH323EndPoint *endPoint = NULL;
+
+/** PWLib entry point */
+MyProcess *localProcess = NULL;
+
+/** H.323 listener */
+H323ListenerTCP *tcpListener;
+
+MyProcess::MyProcess(): PProcess("The NuFone Network's", "H.323 Channel Driver for Asterisk",
+             MAJOR_VERSION, MINOR_VERSION, BUILD_TYPE, BUILD_NUMBER)
+{
+       Resume();
+}
+
+MyProcess::~MyProcess()
+{
+       cout << " == PWLib proces going down." << endl;
+       delete endPoint;
+       endPoint = NULL;
+}
+
+void MyProcess::Main()
+{
+       cout << "  == Creating H.323 Endpoint" << endl;
+       endPoint = new MyH323EndPoint();
+       PTrace::Initialise(0, NULL, PTrace::Timestamp | PTrace::Thread | PTrace::FileAndLine);
+}
+
+ClearCallThread::ClearCallThread(const char *tc) : PThread(10000, PThread::NoAutoDeleteThread)
+{ 
+       token = tc;
+       Resume(); 
+}
+
+ClearCallThread::~ClearCallThread()
+{
+       if (h323debug)
+               cout <<  " == ClearCall thread going down." << endl;
+       return;
+}
+    
+void ClearCallThread::Main()
+{
+       endPoint->ClearCall(token);
+       return;
+}
+
+
+#define H323_NAME OPAL_G7231_6k3"{sw}"
+
+H323_REGISTER_CAPABILITY(H323_G7231Capability, H323_NAME);
+
+H323_G7231Capability::H323_G7231Capability(BOOL annexA_)
+  : H323AudioCapability(7, 4)
+{
+  annexA = annexA_;
+}
+
+PObject::Comparison H323_G7231Capability::Compare(const PObject & obj) const
+{
+  Comparison result = H323AudioCapability::Compare(obj);
+  if (result != EqualTo)
+    return result;
+
+  PINDEX otherAnnexA = ((const H323_G7231Capability &)obj).annexA;
+  if (annexA < otherAnnexA)
+    return LessThan;
+  if (annexA > otherAnnexA)
+    return GreaterThan;
+  return EqualTo;
+}
+
+PObject * H323_G7231Capability::Clone() const
+{
+  return new H323_G7231Capability(*this);
+}
+
+
+PString H323_G7231Capability::GetFormatName() const
+{
+  return H323_NAME;
+}
+
+
+unsigned H323_G7231Capability::GetSubType() const
+{
+  return H245_AudioCapability::e_g7231;
+}
+
+
+BOOL H323_G7231Capability::OnSendingPDU(H245_AudioCapability & cap,
+                                          unsigned packetSize) const
+{
+  cap.SetTag(H245_AudioCapability::e_g7231);
+
+  H245_AudioCapability_g7231 & g7231 = cap;
+  g7231.m_maxAl_sduAudioFrames = packetSize;
+  g7231.m_silenceSuppression = annexA;
+
+  return TRUE;
+}
+
+
+BOOL H323_G7231Capability::OnReceivedPDU(const H245_AudioCapability & cap,
+                                           unsigned & packetSize)
+{
+  if (cap.GetTag() != H245_AudioCapability::e_g7231)
+    return FALSE;
+
+  const H245_AudioCapability_g7231 & g7231 = cap;
+  packetSize = g7231.m_maxAl_sduAudioFrames;
+  annexA = g7231.m_silenceSuppression;
+
+  return TRUE;
+}
+
+
+H323Codec * H323_G7231Capability::CreateCodec(H323Codec::Direction direction) const
+{
+  return NULL;
+}
+
+/** MyH323EndPoint 
+  * The fullAddress parameter is used directly in the MakeCall method so
+  * the General form for the fullAddress argument is :
+  * [alias@][transport$]host[:port]
+  * default values:    alias = the same value as host.
+  *                                    transport = ip.
+  *                                    port = 1720.
+  */
+int MyH323EndPoint::MakeCall(const PString & dest, PString & token, 
+                                                                               unsigned int *callReference, unsigned int port)
+{
+       PString fullAddress;
+       
+       /* Determine whether we are using a gatekeeper or not. */
+       if (GetGatekeeper() != NULL) {
+               fullAddress = dest;
+               if (h323debug)
+                       cout << " -- Making call to " << fullAddress << " using gatekeeper." << endl;
+       } else {
+                       fullAddress = dest; /* host */
+                       fullAddress += psprintf(":%i", port); /* host:port */
+                       if (h323debug)
+                               cout << " -- Making call to " << fullAddress << "." << endl;
+               }
+
+       if (!H323EndPoint::MakeCall(fullAddress, token)) {
+               if (h323debug)
+                       cout << "Error making call to \"" << fullAddress << '"' << endl;
+               return 1;
+       }
+       
+       MyH323Connection * connection = (MyH323Connection *)FindConnectionWithLock(token);
+
+       if (connection != NULL) {
+               *callReference = connection->GetCallReference();
+               connection->Unlock();
+       }
+       
+       if (h323debug) {
+               cout << "       -- " << GetLocalUserName() << " is calling host " << fullAddress << endl;
+               cout << "       -- " << "Call token is " << (const char *)token << endl;
+               cout << "       -- Call reference is " << *callReference << endl;
+       }
+       return 0;
+}
+
+void MyH323EndPoint::SetEndpointTypeInfo( H225_EndpointType & info ) const
+{
+  H323EndPoint::SetEndpointTypeInfo(info);
+  info.m_gateway.IncludeOptionalField(H225_GatewayInfo::e_protocol);
+  info.m_gateway.m_protocol.SetSize(1);
+  H225_SupportedProtocols &protocol=info.m_gateway.m_protocol[0];
+  protocol.SetTag(H225_SupportedProtocols::e_voice);
+  PINDEX as=SupportedPrefixes.GetSize();
+  ((H225_VoiceCaps &)protocol).m_supportedPrefixes.SetSize(as);
+  for (PINDEX p=0; p<as; p++) {
+    H323SetAliasAddress(SupportedPrefixes[p], ((H225_VoiceCaps &)protocol).m_supportedPrefixes[p].m_prefix);
+  }
+}
+
+void MyH323EndPoint::SetGateway(void)
+{
+       terminalType = e_GatewayOnly;
+}
+
+H323Capabilities MyH323EndPoint::GetCapabilities(void)
+{
+       return capabilities;
+}
+
+BOOL MyH323EndPoint::ClearCall(const PString & token)
+{
+       if (h323debug)
+               cout << "       -- ClearCall: Request to clear call with token " << token << endl;
+       return H323EndPoint::ClearCall(token);
+}
+
+void MyH323EndPoint::SendUserTone(const PString &token, char tone)
+{
+       H323Connection *connection = NULL;
+               
+       connection = FindConnectionWithLock(token);
+       if (connection != NULL) {
+               connection->SendUserInputTone(tone, 500);
+               connection->Unlock();
+       }
+}
+
+void MyH323EndPoint::OnClosedLogicalChannel(H323Connection & connection, const H323Channel & channel)
+{
+       channelsOpen--;
+       if (h323debug)
+               cout << "               channelsOpen = " << channelsOpen << endl;
+       H323EndPoint::OnClosedLogicalChannel(connection, channel);
+}
+
+void MyH323EndPoint::OnConnectionEstablished(H323Connection & connection, const PString & estCallToken)
+{
+       if (h323debug)
+               cout << "       -- Connection Established with \"" << connection.GetRemotePartyName() << "\"" << endl;
+       on_connection_established(connection.GetCallReference());
+}
+
+/** OnConnectionCleared callback function is called upon the dropping of an established
+  * H323 connection. 
+  */
+void MyH323EndPoint::OnConnectionCleared(H323Connection & connection, const PString & clearedCallToken)
+{
+       PString remoteName = connection.GetRemotePartyName();
+       
+       call_details_t cd;
+
+       cd.call_reference = connection.GetCallReference();
+       cd.call_token = (const char *)connection.GetCallToken();
+       cd.call_source_aliases = (const char *)connection.GetRemotePartyName();
+       
+       /* Convert complex strings */
+       char *s;
+    if ((s = strchr(cd.call_source_aliases, ' ')) != NULL)
+               *s = '\0';
+
+       /* Invoke the PBX application registered callback */
+       on_connection_cleared(cd);
+
+       switch (connection.GetCallEndReason()) {
+               case H323Connection::EndedByCallForwarded :
+                       break;
+               case H323Connection::EndedByRemoteUser :
+                       if (h323debug)
+                               cout << " -- " << remoteName << " has cleared the call" << endl;
+                       break;
+               case H323Connection::EndedByCallerAbort :
+                       if (h323debug)
+                               cout << " -- " << remoteName << " has stopped calling" << endl;
+                       break;
+               case H323Connection::EndedByRefusal :
+                       if (h323debug)
+                               cout << " -- " << remoteName << " did not accept your call" << endl;
+                       break;
+               case H323Connection::EndedByRemoteBusy :
+                       if (h323debug)
+                       cout << " -- " << remoteName << " was busy" << endl;
+                       break;
+               case H323Connection::EndedByRemoteCongestion :
+                       if (h323debug)
+                               cout << " -- Congested link to " << remoteName << endl;
+                       break;
+               case H323Connection::EndedByNoAnswer :
+                       if (h323debug)
+                               cout << " -- " << remoteName << " did not answer your call" << endl;
+                       break;
+               case H323Connection::EndedByTransportFail :
+                       if (h323debug)
+                               cout << " -- Call with " << remoteName << " ended abnormally" << endl;
+                       break;
+               case H323Connection::EndedByCapabilityExchange :
+                       if (h323debug)
+                               cout << " -- Could not find common codec with " << remoteName << endl;
+                       break;
+               case H323Connection::EndedByNoAccept :
+                       if (h323debug)
+                               cout << " -- Did not accept incoming call from " << remoteName << endl;
+                       break;
+               case H323Connection::EndedByAnswerDenied :
+                       if (h323debug)
+                               cout << " -- Refused incoming call from " << remoteName << endl;
+                       break;
+               case H323Connection::EndedByNoUser :
+                       if (h323debug)
+                               cout << " -- Gatekeeper could not find user " << remoteName << endl;
+                       break;
+               case H323Connection::EndedByNoBandwidth :
+                       if (h323debug)
+                               cout << " -- Call to " << remoteName << " aborted, insufficient bandwidth." << endl;
+                       break;
+               case H323Connection::EndedByUnreachable :
+                       if (h323debug)
+                               cout << " -- " << remoteName << " could not be reached." << endl;
+                       break;
+               case H323Connection::EndedByHostOffline :
+                       if (h323debug)
+                               cout << " -- " << remoteName << " is not online." << endl;
+                       break;
+               case H323Connection::EndedByNoEndPoint :
+                       if (h323debug)
+                               cout << " -- No phone running for " << remoteName << endl;
+                       break;
+               case H323Connection::EndedByConnectFail :
+                       if (h323debug)
+                               cout << " -- Transport error calling " << remoteName << endl;
+                       break;
+               default :
+                       if (h323debug)
+                               cout << " -- Call with " << remoteName << " completed" << endl;
+       }
+       if(connection.IsEstablished()) 
+               if (h323debug)
+                       cout << "        -- Call duration " << setprecision(0) << setw(5) << (PTime() - connection.GetConnectionStartTime()) << endl;
+}
+
+
+H323Connection * MyH323EndPoint::CreateConnection(unsigned callReference, void *outbound)
+{
+       unsigned options = 0;
+
+       if (noFastStart)
+               options |= H323Connection::FastStartOptionDisable;
+
+       if (noH245Tunnelling)
+               options |= H323Connection::H245TunnelingOptionDisable;
+
+       return new MyH323Connection(*this, callReference, options, jitter);
+}
+
+
+/* MyH323Connection */    
+MyH323Connection::MyH323Connection(MyH323EndPoint & ep,
+                                                                                  unsigned callReference,
+                                                                              unsigned options,
+                                                                                  WORD jitter): H323Connection(ep, 
+                                                                                                                                               callReference, 
+                                                                                                                                               options)
+{
+    remoteIpAddress = 0;       // IP Address of remote endpoint
+       remotePort              = 0;    // remote endpoint Data port (control is dataPort+1)
+
+       if (h323debug)
+               cout << "       == New H.323 Connection created." << endl;
+       return;
+}
+
+MyH323Connection::~MyH323Connection()
+{
+       if (h323debug)
+               cout << "       == H.323 Connection deleted." << endl;
+       return;
+}
+
+H323Connection::AnswerCallResponse     MyH323Connection::OnAnswerCall(const PString & caller,
+                                                                                                                                  const H323SignalPDU & /*setupPDU*/,
+                                                                                                                                  H323SignalPDU & /*connectPDU*/)
+{
+       /* The call will be answered later with "AnsweringCall()" function.
+        */ 
+       return H323Connection::AnswerCallAlertWithMedia;
+}
+
+BOOL  MyH323Connection::OnAlerting(const H323SignalPDU & /*alertingPDU*/, const PString & username)
+{
+       
+       if (h323debug)
+               cout << "       -- Ringing phone for \"" << username << "\"" << endl;
+       return TRUE;
+}
+
+BOOL MyH323Connection::OnReceivedSignalSetup(const H323SignalPDU & setupPDU)
+{
+       
+       if (h323debug)
+               cout << "       -- Received SETUP message..." << endl;
+
+       call_details_t cd;
+       
+       PString sourceE164;
+       PString destE164;
+       PString sourceAliases;  
+       PString destAliases;
+       PString sourceIp;
+               
+       PIPSocket::Address Ip;
+       WORD                       sourcePort;
+
+       sourceAliases = setupPDU.GetSourceAliases();
+       destAliases = setupPDU.GetDestinationAlias();
+                       
+       sourceE164 = "";
+       setupPDU.GetSourceE164(sourceE164);
+       destE164 = "";
+       setupPDU.GetDestinationE164(destE164);
+
+       /* Convert complex strings */
+       //  FIXME: deal more than one source alias 
+       char *s; 
+    if ((s = strchr(sourceAliases, ' ')) != NULL)
+                *s = '\0';
+    if ((s = strchr(sourceAliases, '\t')) != NULL)
+                *s = '\0';
+       char *s1;
+    if ((s1 = strchr(destAliases, ' ')) != NULL)
+         *s1 = '\0';
+       if ((s1 = strchr(destAliases, '\t')) != NULL)
+         *s1 = '\0';
+
+       GetSignallingChannel()->GetRemoteAddress().GetIpAndPort(Ip, sourcePort);
+
+       sourceIp = Ip.AsString();
+
+       cd.call_reference               = GetCallReference();
+       cd.call_token                   = (const char *)GetCallToken();
+       cd.call_source_aliases  = (const char *)sourceAliases;
+       cd.call_dest_alias              = (const char *)destAliases;
+       cd.call_source_e164             = (const char *)sourceE164;
+       cd.call_dest_e164               = (const char *)destE164;
+       cd.sourceIp                             = (const char *)sourceIp;
+       
+       /* Notify Asterisk of the request */
+       int res = on_incoming_call(cd); 
+
+       if (!res) {
+               if (h323debug)
+                       cout << "       -- Call Failed" << endl;
+               return FALSE;
+       }
+       
+       return H323Connection::OnReceivedSignalSetup(setupPDU);
+}
+
+BOOL MyH323Connection::OnSendSignalSetup(H323SignalPDU & setupPDU)
+{
+       call_details_t cd;
+       
+       if (h323debug) 
+               cout << "       -- Sending SETUP message" << endl;
+       
+       sourceAliases = setupPDU.GetSourceAliases();
+       destAliases = setupPDU.GetDestinationAlias();
+
+       sourceE164 = "";
+       setupPDU.GetSourceE164(sourceE164);
+       destE164 = "";
+       setupPDU.GetDestinationE164(destE164);
+
+       /* Convert complex strings */
+       //  FIXME: deal more than one source alias 
+       char *s; 
+    if ((s = strchr(sourceAliases, ' ')) != NULL)
+                *s = '\0';
+    if ((s = strchr(sourceAliases, '\t')) != NULL)
+                *s = '\0';
+       char *s1;
+    if ((s1 = strchr(destAliases, ' ')) != NULL)
+         *s1 = '\0';
+       if ((s1 = strchr(destAliases, '\t')) != NULL)
+         *s1 = '\0';
+
+       cd.call_reference               = GetCallReference();
+       cd.call_token                   = (const char *)GetCallToken();
+       cd.call_source_aliases  = (const char *)sourceAliases;
+       cd.call_dest_alias              = (const char *)destAliases;
+       cd.call_source_e164             = (const char *)sourceE164;
+       cd.call_dest_e164               = (const char *)destE164;
+
+       int res = on_outgoing_call(cd); 
+               
+       if (!res) {
+               if (h323debug)
+                       cout << "       -- Call Failed" << endl;
+               return FALSE;
+       }
+
+       return H323Connection::OnSendSignalSetup(setupPDU);
+}
+
+void MyH323Connection::OnReceivedReleaseComplete(const H323SignalPDU & pdu)
+{
+       if (h323debug)
+               cout <<  "      -- Received RELEASE COMPLETE message..." << endl;
+       return H323Connection::OnReceivedReleaseComplete(pdu);
+
+}
+
+BOOL MyH323Connection::OnClosingLogicalChannel(H323Channel & channel)
+{
+       if (h323debug)
+               cout << "       -- Closing logical channel..." << endl;
+       return H323Connection::OnClosingLogicalChannel(channel);
+}
+
+
+void MyH323Connection::SendUserInputTone(char tone, unsigned duration)
+{
+       if (h323debug)
+               cout << "       -- Sending user input tone (" << tone << ") to remote" << endl;
+
+       on_send_digit(GetCallReference(), tone);
+               
+       H323Connection::SendUserInputTone(tone, duration);
+}
+
+void MyH323Connection::OnUserInputTone(char tone, unsigned duration, unsigned logicalChannel, unsigned rtpTimestamp)
+{
+       if (mode == H323_DTMF_INBAND) {
+               if (h323debug)
+                       cout << "       -- Received user input tone (" << tone << ") from remote" << endl;
+               on_send_digit(GetCallReference(), tone);
+       }
+       H323Connection::OnUserInputTone(tone, duration, logicalChannel, rtpTimestamp);
+}
+
+void MyH323Connection::OnUserInputString(const PString &value)
+{
+       if (mode == H323_DTMF_RFC2833) {
+               if (h323debug)
+                       cout <<  "      -- Received user input string (" << value << ") from remote." << endl;
+               on_send_digit(GetCallReference(), value[0]);
+       }       
+}
+
+H323Channel * MyH323Connection::CreateRealTimeLogicalChannel(const H323Capability & capability,
+                                                                                                                    H323Channel::Directions dir,
+                                                                                                                    unsigned sessionID,
+                                                                                                                    const H245_H2250LogicalChannelParameters * /*param*/)
+{
+       WORD port; 
+       
+       /* Establish the Local (A side) IP Address */
+       GetControlChannel().GetLocalAddress().GetIpAndPort(externalIpAddress, port);
+       
+       /* Notify Asterisk of the request and get the port */
+       externalPort = on_create_connection(GetCallReference()); 
+
+       if (h323debug) {
+               cout << "       =*= In CreateRealTimeLogicalChannel" << endl;
+               cout << "               -- externalIpAddress: " << externalIpAddress << endl;
+               cout << "               -- externalPort: " << externalPort << endl;
+               cout << "               -- Direction: " << dir << endl;
+       }
+       
+       return new H323_ExternalRTPChannel(*this, capability, dir, sessionID, externalIpAddress, externalPort);
+}
+
+/** This callback function is invoked once upon creation of each
+  * channel for an H323 session 
+  */
+BOOL MyH323Connection::OnStartLogicalChannel(H323Channel & channel)
+{    
+       if (h323debug) {
+               cout << "        -- Started logical channel: "; 
+               cout << ((channel.GetDirection()==H323Channel::IsTransmitter)?"sending ":((channel.GetDirection()==H323Channel::IsReceiver)?"receiving ":" ")); 
+               cout << (const char *)(channel.GetCapability()).GetFormatName() << endl;
+       }
+       // adjust the count of channels we have open
+       channelsOpen++;
+       if (h323debug)
+               cout <<  "              -- channelsOpen = " << channelsOpen << endl;
+       
+       H323_ExternalRTPChannel & external = (H323_ExternalRTPChannel &)channel;
+    external.GetRemoteAddress(remoteIpAddress, remotePort); 
+
+       if (h323debug) {
+               cout << "               -- remoteIpAddress: " << remoteIpAddress << endl;
+               cout << "               -- remotePort: " << remotePort << endl;
+               cout << "               -- ExternalIpAddress: " << externalIpAddress << endl;
+               cout << "               -- ExternalPort: " << externalPort << endl;
+       }
+       /* Notify Asterisk of remote RTP information */
+       on_start_logical_channel(GetCallReference(), (const char *)remoteIpAddress.AsString(), remotePort);
+
+       return TRUE;    
+}
+
+#if 0
+MyGatekeeperServer::MyGatekeeperServer(MyH323EndPoint & ep)
+  : H323GatekeeperServer(ep),
+    endpoint(ep)
+{
+}
+
+
+BOOL MyGatekeeperServer::Initialise()
+{
+  PINDEX i;
+
+  PWaitAndSignal mutex(reconfigurationMutex);
+  
+  SetGatekeeperIdentifier("TESTIES");
+
+    // Interfaces to listen on
+  H323TransportAddressArray interfaces;
+  interfaces.Append(new H323TransportAddress(0.0.0.0);
+  AddListeners(interfaces);
+
+  // lots more to come
+  
+  return TRUE;
+
+}
+
+#endif
+
+/** IMPLEMENTATION OF C FUNCTIONS */
+
+/**
+ * The extern "C" directive takes care for 
+ * the ANSI-C representation of linkable symbols 
+ */
+extern "C" {
+
+int end_point_exist(void)
+{
+       if (!endPoint) {
+               return 0;
+       }
+       return 1;
+}
+    
+void h323_end_point_create(void)
+{
+       channelsOpen = 0;
+       localProcess = new MyProcess(); 
+       localProcess->Main();
+}
+
+void h323_gk_urq(void)
+{
+       if (!end_point_exist()) {
+               cout << " ERROR: [h323_gk_urq] No Endpoint, this is bad" << endl;
+               return;
+       }
+       
+       endPoint->RemoveGatekeeper();
+}
+
+void h323_end_process(void)
+{      
+       delete localProcess;
+}
+
+void h323_debug(int flag, unsigned level)
+{
+       if (flag) 
+               PTrace:: SetLevel(level); 
+       else 
+               PTrace:: SetLevel(0); 
+}
+       
+/** Installs the callback functions on behalf of the PBX application  */
+void h323_callback_register(setup_incoming_cb  ifunc, 
+                                                       setup_outbound_cb  sfunc,
+                                                       on_connection_cb   confunc,
+                                                       start_logchan_cb   lfunc,
+                                                       clear_con_cb       clfunc,
+                                                       con_established_cb efunc,
+                                                       send_digit_cb      dfunc)
+{
+       on_incoming_call = ifunc;
+       on_outgoing_call = sfunc;
+       on_create_connection = confunc;
+       on_start_logical_channel = lfunc;
+       on_connection_cleared = clfunc;
+       on_connection_established = efunc;
+       on_send_digit = dfunc;
+}
+
+/**
+ * Add capability to the capability table of the end point. 
+ */
+int h323_set_capability(int cap, int dtmfMode)
+{
+       int g711Frames = 30;
+    int gsmFrames  = 4;
+
+       
+       if (!end_point_exist()) {
+               cout << " ERROR: [h323_set_capablity] No Endpoint, this is bad" << endl;
+               return 1;
+       }
+
+       mode = dtmfMode;
+       if (dtmfMode == H323_DTMF_INBAND)
+           endPoint->SetSendUserInputMode(H323Connection::SendUserInputAsTone);
+       else
+               endPoint->SetSendUserInputMode(H323Connection::SendUserInputAsInlineRFC2833);
+        
+
+       /* Hardcode this for now (Someone tell me if T.38 works now 
+          or provide me with some debug so we can make this work */
+
+//     endPoint->SetCapability(0, 0, new H323_T38Capability(H323_T38Capability::e_UDP));
+       
+       if (cap & AST_FORMAT_SPEEX) {
+               /* Not real sure if Asterisk acutally supports all
+                  of the various different bit rates so add them 
+                  all and figure it out later*/
+
+               endPoint->SetCapability(0, 0, new SpeexNarrow2AudioCapability());
+               endPoint->SetCapability(0, 0, new SpeexNarrow3AudioCapability());
+               endPoint->SetCapability(0, 0, new SpeexNarrow4AudioCapability());
+               endPoint->SetCapability(0, 0, new SpeexNarrow5AudioCapability());
+               endPoint->SetCapability(0, 0, new SpeexNarrow6AudioCapability());
+       }
+
+       if (cap & AST_FORMAT_G723_1) {
+               H323_G7231Capability *g7231Cap;
+               endPoint->SetCapability(0, 0, g7231Cap = new H323_G7231Capability);
+       } 
+
+       if (cap & AST_FORMAT_GSM) {
+               H323_GSM0610Capability *gsmCap;
+           endPoint->SetCapability(0, 0, gsmCap = new H323_GSM0610Capability);
+           gsmCap->SetTxFramesInPacket(gsmFrames);
+       }
+
+       if (cap & AST_FORMAT_G729A) {
+               H323_G729ACapability *g729aCap;
+               endPoint->SetCapability(0, 0, g729aCap = new H323_G729ACapability);
+       } 
+
+       if (cap & AST_FORMAT_ULAW) {
+
+               H323_G711Capability *g711uCap;
+           endPoint->SetCapability(0, 0, g711uCap = new H323_G711Capability(H323_G711Capability::muLaw));
+               g711uCap->SetTxFramesInPacket(g711Frames);
+       } 
+
+       if (cap & AST_FORMAT_ALAW) {
+               H323_G711Capability *g711aCap;
+               endPoint->SetCapability(0, 0, g711aCap = new H323_G711Capability(H323_G711Capability::ALaw));
+               g711aCap->SetTxFramesInPacket(g711Frames);
+       } 
+
+       return 0;
+}
+
+/** Start the H.323 listener */
+int h323_start_listener(int listenPort, struct sockaddr_in bindaddr, int _jitter)
+{
+       
+       if (!end_point_exist()) {
+               cout << "ERROR: [h323_start_listener] No Endpoint, this is bad!" << endl;
+               return 1;
+       }
+       
+       jitter = _jitter;
+
+       PIPSocket::Address interfaceAddress(bindaddr.sin_addr);
+       
+       tcpListener = new H323ListenerTCP(*endPoint, interfaceAddress, (WORD)listenPort);
+
+       if (!endPoint->StartListener(tcpListener)) {
+               cout << "ERROR: Could not open H.323 listener port on " << ((H323ListenerTCP *) tcpListener)->GetListenerPort() << endl;
+               return 1;
+               
+       }
+               
+       cout << "  == H.323 listener started on " << ((H323ListenerTCP *) tcpListener)->GetTransportAddress() << endl;
+       
+       return 0;
+};
+   
+int h323_set_alias(struct oh323_alias *alias)
+{
+       char *p;
+       char *num;
+       PString h323id(alias->name);
+       PString e164(alias->e164);
+       
+       if (!end_point_exist()) {
+               cout << "ERROR: [h323_set_alias] No Endpoint, this is bad!" << endl;
+               return 1;
+       }
+
+       cout << "  == Adding alias \"" << h323id << "\" to endpoint" << endl;
+       endPoint->AddAliasName(h323id); 
+
+       endPoint->RemoveAliasName(localProcess->GetUserName());
+
+       if (!e164.IsEmpty()) {
+               cout << "  == Adding E.164 \"" << e164 << "\" to endpoint" << endl;
+               endPoint->AddAliasName(e164);
+       }
+       if (strlen(alias->prefix)) {
+               p = alias->prefix;
+               num = strsep(&p, ",");
+               while(num) {
+               cout << "  == Adding Prefix \"" << num << "\" to endpoint" << endl;
+                       endPoint->SupportedPrefixes += PString(num);
+                       endPoint->SetGateway();
+               num = strsep(&p, ",");          
+               }
+       }
+
+       return 0;
+}
+
+/** Establish Gatekeeper communiations, if so configured, 
+  *    register aliases for the H.323 endpoint to respond to.
+  */
+int h323_set_gk(int gatekeeper_discover, char *gatekeeper, char *secret)
+{
+       PString gkName = PString(gatekeeper);
+       PString pass   = PString(secret);
+
+       cout << "begining" << endl;
+
+       if (!end_point_exist()) {
+               cout << "ERROR: [h323_set_gk] No Endpoint, this is bad!" << endl;
+               return 1;
+       }
+
+       if (!gatekeeper) {
+               cout << "Error: Gatekeeper cannot be NULL" << endl;
+               return 1;
+       }
+
+       if (strlen(secret)) {
+               endPoint->SetGatekeeperPassword(pass);
+       }
+               
+
+       if (gatekeeper_discover) {
+               /* discover the gk using multicast */
+               if (endPoint->DiscoverGatekeeper(new H323TransportUDP(*endPoint))) {
+                       cout << "  == Using " << (endPoint->GetGatekeeper())->GetName() << " as our Gatekeeper." << endl;
+               } else {
+                       cout << "  *** Could not find a gatekeeper." << endl;
+                       return 1;
+               }       
+       } else {
+               /* Gatekeeper operations */
+               H323TransportUDP *rasChannel = new H323TransportUDP(*endPoint);
+       
+               if (!rasChannel) {
+                       cout << "       *** No RAS Channel, this is bad" << endl;
+                       return 1;
+               }
+               if (endPoint->SetGatekeeper(gkName, rasChannel)) {
+                       cout << "  == Using " << (endPoint->GetGatekeeper())->GetName() << " as our Gatekeeper." << endl;
+               } else {
+                       cout << "  *** Error registering with gatekeeper \"" << gkName << "\". " << endl;
+                       return 1;
+               }
+       }
+       
+       cout << "end" << endl;
+       return 0;
+}
+
+/** Send a DTMF tone over the H323Connection with the
+  * specified token.
+  */
+void h323_send_tone(const char *call_token, char tone)
+{
+       if (!end_point_exist()) {
+               cout << "ERROR: [h323_send_tone] No Endpoint, this is bad!" << endl;
+               return;
+       }
+
+       PString token = PString(call_token);
+       endPoint->SendUserTone(token, tone);
+}
+
+/** Make a call to the remote endpoint.
+  */
+int h323_make_call(char *host, call_details_t *cd, call_options_t call_options)
+{
+       int res;
+       PString token;
+
+       if (!end_point_exist()) {
+               return 1;
+       }
+       
+       PString dest = PString(host);
+       
+       res = endPoint->MakeCall(dest, token, &cd->call_reference, call_options.port);
+       memcpy((char *)(cd->call_token), (const unsigned char *)token, token.GetLength());
+       
+       return res;
+};
+
+int h323_clear_call(const char *call_token)
+{
+       if (!end_point_exist()) {
+               return 1;
+       }
+
+       ClearCallThread *clearCallThread = new ClearCallThread(call_token);
+       clearCallThread->WaitForTermination();
+       
+       return 0;
+};
+
+/** This function tells the h.323 stack to either 
+    answer or deny an incoming call  */
+int h323_answering_call(const char *token, int busy) 
+{
+       const PString currentToken(token);
+
+       H323Connection * connection;
+       
+       connection = endPoint->FindConnectionWithLock(currentToken);
+       
+       if (connection == NULL) {
+               cout << "No connection found for " << token << endl;
+               return -1;
+       }
+
+       if (!busy){
+               connection->AnsweringCall(H323Connection::AnswerCallNow);
+               connection->Unlock();
+
+       } else {
+               connection->AnsweringCall(H323Connection::AnswerCallDenied);
+               connection->Unlock();
+       };
+
+       return 0;
+}
+
+
+int h323_show_codec(int fd, int argc, char *argv[])
+{
+       cout <<  "Allowed Codecs:\n\t" << setprecision(2) << endPoint->GetCapabilities() << endl;
+
+       return 0;
+}
+
+
+/* alas, this doesn't work :(   */
+void h323_native_bridge(const char *token, char *them, char *us)
+{
+       H323Channel *channel;
+       H323Connection *connection = endPoint->FindConnectionWithLock(token);
+    
+       if (!connection){
+               cout << "ERROR: No connection active.\n";
+               return;
+       }
+
+    connection->Unlock();
+       channel = connection->FindChannel(RTP_Session::DefaultAudioSessionID, TRUE);
+       H323_ExternalRTPChannel *external = (H323_ExternalRTPChannel *)channel;
+       external->SetExternalAddress(them, us);  // data (RTP), control (Asterisk)
+       return;
+
+}
+
+} /* extern "C" */
+
+
+
diff --git a/channels/h323/ast_h323.h b/channels/h323/ast_h323.h
new file mode 100755 (executable)
index 0000000..a760483
--- /dev/null
@@ -0,0 +1,249 @@
+/*
+ * h323wrap.h
+ *
+ * OpenH323 Channel Driver for ASTERISK PBX.
+ *                     By Jeremy McNamara
+ *                      For The NuFone Network 
+ * 
+ * This code has been derived from code created by 
+ *             Michael Manousos and Mark Spencer
+ *
+ * This file is part of the chan_h323 driver for Asterisk
+ *
+ * chan_h323 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. 
+ *
+ * chan_h323 is distributed 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., 675 Mass Ave, Cambridge, MA 02139, USA. 
+ *
+ */
+
+
+#include <ptlib.h>
+#include <h323.h>
+#include <h323pdu.h>
+#include <mediafmt.h>
+#include <lid.h>
+
+#include <list>
+#include <string>
+#include <algorithm>
+
+#include "chan_h323.h"
+
+/**  These need to be redefined here because the C++
+        side of this driver is blind to the asterisk headers */
+       
+/*! G.723.1 compression */
+#define AST_FORMAT_G723_1      (1 << 0)
+/*! GSM compression */
+#define AST_FORMAT_GSM         (1 << 1)
+/*! Raw mu-law data (G.711) */
+#define AST_FORMAT_ULAW                (1 << 2)
+/*! Raw A-law data (G.711) */
+#define AST_FORMAT_ALAW                (1 << 3)
+/*! MPEG-2 layer 3 */
+#define AST_FORMAT_MP3         (1 << 4)
+/*! ADPCM (whose?) */
+#define AST_FORMAT_ADPCM       (1 << 5)
+/*! Raw 16-bit Signed Linear (8000 Hz) PCM */
+#define AST_FORMAT_SLINEAR     (1 << 6)
+/*! LPC10, 180 samples/frame */
+#define AST_FORMAT_LPC10       (1 << 7)
+/*! G.729A audio */
+#define AST_FORMAT_G729A       (1 << 8)
+/*! SpeeX Free Compression */
+#define AST_FORMAT_SPEEX       (1 << 9)
+
+
+/**This class describes the G.723.1 codec capability.
+ */
+class H323_G7231Capability : public H323AudioCapability
+{
+    PCLASSINFO(H323_G7231Capability, H323AudioCapability);
+  public:
+    H323_G7231Capability(
+      BOOL annexA = TRUE  /// Enable Annex A silence insertion descriptors
+    );
+    Comparison Compare(const PObject & obj) const;
+
+    PObject * Clone() const;
+  
+       virtual H323Codec * CreateCodec(
+      H323Codec::Direction direction  /// Direction in which this instance runs
+    ) const;
+
+       unsigned GetSubType() const;
+    PString GetFormatName() const;
+    BOOL OnSendingPDU(
+      H245_AudioCapability & pdu,  /// PDU to set information on
+      unsigned packetSize          /// Packet size to use in capability
+    ) const;
+
+    BOOL OnReceivedPDU(
+      const H245_AudioCapability & pdu,  /// PDU to get information from
+      unsigned & packetSize              /// Packet size to use in capability
+    );
+  
+  protected:
+    BOOL annexA;
+};
+
+class MyH323EndPoint : public H323EndPoint {
+
+       PCLASSINFO(MyH323EndPoint, H323EndPoint);
+
+       public:
+
+       int MakeCall(const PString &, PString &, unsigned int *, unsigned int);
+       BOOL ClearCall(const PString &);
+//     BOOL OnIncomingCall( H323Connection & connection, const H323SignalPDU &, H323SignalPDU &);
+
+       void OnClosedLogicalChannel(H323Connection &, const H323Channel &);
+       void OnConnectionEstablished(H323Connection &, const PString &);
+       void OnConnectionCleared(H323Connection &, const PString &);
+       H323Connection * CreateConnection(unsigned, void *);
+       void SendUserTone(const PString &, char);
+       H323Capabilities GetCapabilities(void);
+
+       PStringArray SupportedPrefixes; 
+       
+    void SetEndpointTypeInfo( H225_EndpointType & info ) const;
+    void SetGateway(void);
+};
+
+  
+class MyH323Connection : public H323Connection {
+
+       PCLASSINFO(MyH323Connection, H323Connection);
+
+       public:
+       MyH323Connection(MyH323EndPoint &, unsigned, unsigned, WORD);
+       ~MyH323Connection();
+
+       H323Channel * CreateRealTimeLogicalChannel(const H323Capability &, H323Channel::Directions, unsigned, 
+                                                                                          const H245_H2250LogicalChannelParameters *);
+       H323Connection::AnswerCallResponse OnAnswerCall(const PString &, const H323SignalPDU &, H323SignalPDU &);
+       BOOL OnAlerting(const H323SignalPDU &, const PString &);
+       BOOL OnReceivedSignalSetup(const H323SignalPDU &);
+       void OnReceivedReleaseComplete(const H323SignalPDU &);
+       BOOL OnSendSignalSetup(H323SignalPDU &);
+       BOOL OnStartLogicalChannel(H323Channel &);
+       BOOL OnClosingLogicalChannel(H323Channel &);
+       void SendUserInputTone(char, unsigned);
+       void OnUserInputTone(char, unsigned, unsigned, unsigned);
+       void OnUserInputString(const PString &value);
+
+       PString sourceAliases;
+       PString destAliases;
+       PString sourceE164;
+       PString destE164;
+
+       PIPSocket::Address externalIpAddress;   // IP address of media server
+    PIPSocket::Address remoteIpAddress;                // IP Address of remote endpoint
+       WORD                       externalPort;                // local media server Data port (control is dataPort+1)
+       WORD                       remotePort;                  // remote endpoint Data port (control is dataPort+1)
+};
+
+
+#if 0
+class MyGatekeeperServer : public H323GatekeeperServer
+{
+    PCLASSINFO(MyGatekeeperServer, H323GatekeeperServer);
+  public:
+    MyGatekeeperServer(MyH323EndPoint & ep);
+
+    // Overrides
+    virtual H323GatekeeperCall * CreateCall(
+      const OpalGloballyUniqueID & callIdentifier,
+      H323GatekeeperCall::Direction direction
+    );
+    virtual BOOL TranslateAliasAddressToSignalAddress(
+      const H225_AliasAddress & alias,
+      H323TransportAddress & address
+    );
+
+    // new functions
+    BOOL Initialise();
+
+  private:
+    class RouteMap : public PObject {
+        PCLASSINFO(RouteMap, PObject);
+      public:
+        RouteMap(
+          const PString & alias,
+          const PString & host
+        );
+        RouteMap(
+          const RouteMap & map
+        ) : alias(map.alias), regex(map.alias), host(map.host) { }
+
+        void PrintOn(
+          ostream & strm
+        ) const;
+
+        BOOL IsValid() const;
+
+        BOOL IsMatch(
+          const PString & alias
+        ) const;
+
+        const H323TransportAddress & GetHost() const { return host; }
+
+      private:
+        PString              alias;
+        PRegularExpression   regex;
+        H323TransportAddress host;
+    };
+    PList<RouteMap> routes;
+
+    PMutex reconfigurationMutex;
+};
+
+#endif
+
+/**
+ * The MyProcess is a necessary descendant PProcess class so that the H323EndPoint 
+ * objected to be created from within that class. (Who owns main() problem). 
+ */
+class MyProcess : public PProcess {
+
+       PCLASSINFO(MyProcess, PProcess);
+    
+       public:
+       MyProcess();
+       ~MyProcess();
+
+       void Main(); 
+       
+       
+};
+
+
+/** 
+ * This class handles the termination of a call.
+ * Note that OpenH323 Library requires that the termination
+ * of a call should be done inside a separate thread of execution.
+ */
+class ClearCallThread : public PThread {
+
+       PCLASSINFO(ClearCallThread, PThread);
+
+       public:
+       ClearCallThread(const char *tc);
+       ~ClearCallThread();    
+       
+       void Main();
+       
+       protected:
+       PString token;
+};
+
+
diff --git a/channels/h323/chan_h323.c b/channels/h323/chan_h323.c
new file mode 100755 (executable)
index 0000000..12b64da
--- /dev/null
@@ -0,0 +1,1717 @@
+/*
+ * chan_oh323.c
+ *
+ * OpenH323 Channel Driver for ASTERISK PBX.
+ *                     By Jeremy McNamara
+ *                      For The NuFone Network 
+ *
+ * This code has been derived from code created by 
+ *             Michael Manousos and Mark Spencer
+ *
+ * This file is part of the chan_h323 driver for Asterisk
+ *
+ * chan_h323 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. 
+ *
+ * chan_h323 is distributed 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., 675 Mass Ave, Cambridge, MA 02139, USA. 
+ *
+ */
+
+
+#include <stdio.h>
+#include <pthread.h>
+#include <string.h>
+#include <asterisk/lock.h>
+#include <asterisk/logger.h>
+#include <asterisk/channel.h>
+#include <asterisk/channel_pvt.h>
+#include <asterisk/config.h>
+#include <asterisk/module.h>
+#include <asterisk/pbx.h>
+#include <asterisk/options.h>
+#include <asterisk/lock.h>
+#include <asterisk/sched.h>
+#include <asterisk/io.h>
+#include <asterisk/rtp.h>
+#include <asterisk/acl.h>
+#include <asterisk/callerid.h>
+#include <asterisk/cli.h>
+#include <asterisk/dsp.h>
+#include <sys/socket.h>
+#include <net/if.h>
+#include <errno.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <fcntl.h>
+#include <netdb.h>
+#include <sys/signal.h>
+#include <netinet/ip.h>
+
+
+#include "chan_h323.h"
+
+/** String variables required by ASTERISK */
+static char *type      = "H323";
+static char *desc      = "The NuFone Network's Open H.323 Channel Driver";
+static char *tdesc     = "The NuFone Network's Open H.323 Channel Driver";
+static char *config = "h323.conf";
+
+static char default_context[AST_MAX_EXTENSION];
+
+/** H.323 configuration values */
+static char gatekeeper[100];
+static int     gatekeeper_disable = 1;
+static int     gatekeeper_discover = 0;
+static int  manual = 0;
+static int  usingGk;
+static int     port = 1720;
+static int     jitter;
+static int  gkroute = 0;
+
+/* Just about everybody seems to support ulaw, so make it a nice default */
+static int capability = AST_FORMAT_ULAW;
+
+/* TOS flag */
+static int tos = 0;
+
+static int dtmfmode = H323_DTMF_RFC2833;
+
+static char secret[50];
+
+/** Private structure of a OpenH323 channel */
+struct oh323_pvt {
+       pthread_mutex_t lock;                                   /* Channel private lock */
+       call_options_t call_opt;                                /* Options to be used during call setup */
+       int     alreadygone;                                            /* Whether or not we've already been destroyed by or peer */
+       int needdestroy;                                                /* if we need to be destroyed */
+       call_details_t cd;                                              /* Call details */
+       struct ast_channel *owner;                              /* Who owns us */
+       int capability;                                                 /* Special capability */
+       int nonCodecCapability;
+       int outgoing;                                                   /* Outgoing or incoming call? */
+       int nat;                                                                /* Are we talking to a NAT EP?*/
+       int bridge;                                                             /* Determine of we should native bridge or not*/
+       char exten[AST_MAX_EXTENSION];                  /* Requested extension */
+       char context[AST_MAX_EXTENSION];                /* Context where to start */
+       char username[81];                                              /* H.323 alias using this channel */
+       char accountcode[256];                                  /* Account code */
+       int amaflags;                                                   /* AMA Flags */
+       char callerid[80];                                              /* Caller*ID if available */
+       struct ast_rtp *rtp;                                    /* RTP Session */
+       int dtmfmode;
+       struct ast_dsp *vad;                                    /* Used for in-band DTMF detection */
+       struct oh323_pvt *next;                                 /* Next channel in list */
+} *iflist = NULL;
+
+static struct ast_user_list {
+       struct oh323_user *users;
+       pthread_mutex_t lock;
+} userl = { NULL, AST_MUTEX_INITIALIZER };
+
+static struct ast_peer_list {
+       struct oh323_peer *peers;
+       pthread_mutex_t lock;
+} peerl = { NULL, AST_MUTEX_INITIALIZER };
+
+static struct ast_alias_list {
+       struct oh323_alias *aliases;
+       pthread_mutex_t lock;
+} aliasl = { NULL, AST_MUTEX_INITIALIZER };
+
+/** Asterisk RTP stuff*/
+static struct sched_context *sched;
+static struct io_context *io;
+
+/** Protect the interface list (of oh323_pvt's) */
+static pthread_mutex_t iflock = AST_MUTEX_INITIALIZER;
+
+/** Usage counter and associated lock */
+static int usecnt =0;
+static pthread_mutex_t usecnt_lock = AST_MUTEX_INITIALIZER;
+
+/* Protect the monitoring thread, so only one process can kill or start it, and not
+   when it's doing something critical. */
+static pthread_mutex_t monlock = AST_MUTEX_INITIALIZER;
+
+/* This is the thread for the monitor which checks for input on the channels
+   which are not currently in use.  */
+static pthread_t monitor_thread = 0;
+
+static int restart_monitor(void);
+
+static void __oh323_destroy(struct oh323_pvt *p)
+{
+       struct oh323_pvt *cur, *prev = NULL;
+       
+       if (p->rtp) {
+               ast_rtp_destroy(p->rtp);
+       }
+       
+       /* Unlink us from the owner if we have one */
+       if (p->owner) {
+               ast_pthread_mutex_lock(&p->owner->lock);
+               ast_log(LOG_DEBUG, "Detaching from %s\n", p->owner->name);
+               p->owner->pvt->pvt = NULL;
+               ast_pthread_mutex_unlock(&p->owner->lock);
+       }
+       cur = iflist;
+       while(cur) {
+               if (cur == p) {
+                       if (prev)
+                               prev->next = cur->next;
+                       else
+                               iflist = cur->next;
+                       break;
+               }
+               prev = cur;
+               cur = cur->next;
+       }
+       if (!cur) {
+               ast_log(LOG_WARNING, "%p is not in list?!?! \n", cur);
+       } else
+               free(p);
+}
+
+static void oh323_destroy(struct oh323_pvt *p)
+{
+       ast_pthread_mutex_lock(&iflock);
+       __oh323_destroy(p);
+       ast_pthread_mutex_unlock(&iflock);
+}
+
+static struct oh323_alias *build_alias(char *name, struct ast_variable *v)
+{
+       struct oh323_alias *alias;
+
+       alias = (struct oh323_alias *)malloc(sizeof(struct oh323_alias));
+
+       if (alias) {
+               memset(alias, 0, sizeof(struct oh323_alias));
+               strncpy(alias->name, name, sizeof(alias->name)-1);
+
+               while (v) {
+                       if (!strcasecmp(v->name, "e164")) {
+                               strncpy(alias->e164,  v->value, sizeof(alias->e164)-1);
+                       } else if (!strcasecmp(v->name, "prefix")) {
+                               strncpy(alias->prefix,  v->value, sizeof(alias->prefix)-1);
+                       } else if (!strcasecmp(v->name, "context")) {
+                               strncpy(alias->context,  v->value, sizeof(alias->context)-1);
+                       } else if (!strcasecmp(v->name, "secret")) {
+                               strncpy(alias->prefix,  v->value, sizeof(alias->secret)-1);
+                       }
+                       v = v->next;
+               }
+       }
+       return alias;
+}
+
+static struct oh323_user *build_user(char *name, struct ast_variable *v)
+{
+       struct oh323_user *user;
+       int format;
+       
+       user = (struct oh323_user *)malloc(sizeof(struct oh323_user));
+       if (user) {
+               memset(user, 0, sizeof(struct oh323_user));
+               strncpy(user->name, name, sizeof(user->name)-1);
+               
+               /* set the usage flag to a sane starting value*/
+               user->inUse = 0;
+               /* Assume we can native bridge */
+               user->bridge = 1; 
+
+               while(v) {
+                       if (!strcasecmp(v->name, "context")) {
+                               strncpy(user->context, v->value, sizeof(user->context)-1);
+                       } else if (!strcasecmp(v->name, "bridge")) {
+                               user->bridge = ast_true(v->value);
+                       } else if (!strcasecmp(v->name, "noFastStart")) {
+                               user->noFastStart = ast_true(v->value);
+                       } else if (!strcasecmp(v->name, "noH245Tunneling")) {
+                               user->noH245Tunneling = ast_true(v->value);
+                       } else if (!strcasecmp(v->name, "noSilenceSuppression")) {
+                               user->noSilenceSuppression = ast_true(v->value);
+                       } else if (!strcasecmp(v->name, "secret")) {
+                               strncpy(user->secret, v->value, sizeof(user->secret)-1);
+                       } else if (!strcasecmp(v->name, "accountcode")) {
+                               strncpy(user->accountcode, v->value, sizeof(user->accountcode)-1);
+                       } else if (!strcasecmp(v->name, "incominglimit")) {
+                               user->incominglimit = atoi(v->value);
+                               if (user->incominglimit < 0)
+                                       user->incominglimit = 0;
+                       } else if (!strcasecmp(v->name, "host")) {
+                               if (!strcasecmp(v->value, "dynamic")) {
+                                       ast_log(LOG_ERROR, "Dynamic host configuration not implemented, yet!\n");
+                                       free(user);
+                                       return NULL;
+                               } else if (ast_get_ip(&user->addr, v->value)) {
+                                       free(user);
+                                       return NULL;
+                               } 
+                       } else if (!strcasecmp(v->name, "amaflags")) {
+                               format = ast_cdr_amaflags2int(v->value);
+                               if (format < 0) {
+                                       ast_log(LOG_WARNING, "Invalid AMA Flags: %s at line %d\n", v->value, v->lineno);
+                               } else {
+                                       user->amaflags = format;
+                               }
+                       }
+                       v = v->next;
+               }
+       }
+       return user;
+}
+
+
+static struct oh323_peer *build_peer(char *name, struct ast_variable *v)
+{
+       struct oh323_peer *peer;
+       struct oh323_peer *prev;
+       int found=0;
+       
+       prev = NULL;
+       ast_pthread_mutex_lock(&peerl.lock);
+       peer = peerl.peers;
+
+       while(peer) {
+               if (!strcasecmp(peer->name, name)) {    
+                       break;
+               }
+               prev = peer;
+               peer = peer->next;
+       }
+
+       if (peer) {
+               found++;
+               /* Already in the list, remove it and it will be added back (or FREE'd) */
+               if (prev) {
+                       prev->next = peer->next;
+               } else {
+                       peerl.peers = peer->next;
+               }
+               ast_pthread_mutex_unlock(&peerl.lock);
+       } else {
+               ast_pthread_mutex_unlock(&peerl.lock);
+               peer = malloc(sizeof(struct oh323_peer));
+               memset(peer, 0, sizeof(struct oh323_peer));
+       }
+       if (peer) {
+               if (!found) {
+                       strncpy(peer->name, name, sizeof(peer->name)-1);
+               }
+               
+               /* set the usage flag to a sane starting value*/
+               peer->inUse = 0;
+
+               while(v) {
+                       if (!strcasecmp(v->name, "context")) {
+                               strncpy(peer->context, v->value, sizeof(peer->context)-1);
+                       }  else if (!strcasecmp(v->name, "bridge")) {
+                               peer->bridge = ast_true(v->value);
+                       } else if (!strcasecmp(v->name, "noFastStart")) {
+                               peer->noFastStart = ast_true(v->value);
+                       } else if (!strcasecmp(v->name, "noH245Tunneling")) {
+                               peer->noH245Tunneling = ast_true(v->value);
+                       } else if (!strcasecmp(v->name, "noSilenceSuppression")) {
+                               peer->noSilenceSuppression = ast_true(v->value);
+                       } else if (!strcasecmp(v->name, "outgoinglimit")) {
+                               peer->outgoinglimit = atoi(v->value);
+                               if (peer->outgoinglimit > 0)
+                                       peer->outgoinglimit = 0;
+                       } else if (!strcasecmp(v->name, "host")) {
+                               if (!strcasecmp(v->value, "dynamic")) {
+                                       ast_log(LOG_ERROR, "Dynamic host configuration not implemented, yet!\n");
+                                       free(peer);
+                                       return NULL;
+                               }
+                               if (ast_get_ip(&peer->addr, v->value)) {
+                                               free(peer);
+                                               return NULL;
+                               }
+                       } 
+                       v=v->next;
+               }
+       }
+       return peer;
+}
+
+
+
+/**
+ * Send (play) the specified digit to the channel.
+ * 
+ */
+static int oh323_digit(struct ast_channel *c, char digit)
+{
+       struct oh323_pvt *p = c->pvt->pvt;
+       if (p && p->rtp && (p->dtmfmode & H323_DTMF_RFC2833)) {
+               ast_rtp_senddigit(p->rtp, digit);
+       }
+       /* If in-band DTMF is desired, send that */
+       if (p->dtmfmode & H323_DTMF_INBAND)
+               h323_send_tone(p->cd.call_token, digit);
+       return 0;
+}
+
+
+/**
+ * Make a call over the specified channel to the specified 
+ * destination. This function will parse the destination string
+ * and determine the address-number to call.
+ * Return -1 on error, 0 on success.
+ */
+static int oh323_call(struct ast_channel *c, char *dest, int timeout)
+{
+       int res;
+       struct oh323_pvt *p = c->pvt->pvt;
+       char called_addr[256];
+
+
+       ast_log(LOG_DEBUG, "dest=%s, timeout=%d.\n", dest, timeout);
+
+       if ((c->_state != AST_STATE_DOWN) && (c->_state != AST_STATE_RESERVED)) {
+               ast_log(LOG_WARNING, "Line is already in use (%s)\n", c->name);
+               return -1;
+       }
+
+       /* set the connect port */
+       p->call_opt.port = port;
+       
+       /* outgoing call */
+       p->outgoing = 1;
+
+       /* Clear the call token */
+       if ((p->cd).call_token == NULL)
+               (p->cd).call_token = (char *)malloc(128);
+
+       memset((char *)(p->cd).call_token, 0, 128);
+       
+       if (p->cd.call_token == NULL) {
+               ast_log(LOG_ERROR, "Not enough memory.\n");
+               return -1;
+       }
+
+       /* Build the address to call */
+       memset(called_addr, 0, sizeof(dest));
+       memcpy(called_addr, dest, sizeof(called_addr));
+
+       res = h323_make_call(called_addr, &(p->cd), p->call_opt);
+
+       if (res) {
+               printf("h323_make_call failed\n");
+               return -1;
+       }
+
+       ast_setstate(c, AST_STATE_RINGING);
+       return 0;
+}
+
+
+static int oh323_answer(struct ast_channel *c)
+{
+       int res;
+
+       struct oh323_pvt *p = c->pvt->pvt;
+
+       res = h323_answering_call(p->cd.call_token, 0);
+       
+       if (c->_state != AST_STATE_UP)
+               ast_setstate(c, AST_STATE_UP);
+
+       return res;
+}
+
+static int oh323_hangup(struct ast_channel *c)
+{
+       struct oh323_pvt *p = c->pvt->pvt;
+       int needcancel = 0;
+       if (h323debug)
+               ast_log(LOG_DEBUG, "oh323_hangup(%s)\n", c->name);
+       if (!c->pvt->pvt) {
+               ast_log(LOG_DEBUG, "Asked to hangup channel not connected\n");
+               return 0;
+       }
+       ast_pthread_mutex_lock(&p->lock);
+       /* Determine how to disconnect */
+       if (p->owner != c) {
+               ast_log(LOG_WARNING, "Huh?  We aren't the owner?\n");
+               ast_pthread_mutex_unlock(&p->lock);
+               return 0;
+       }
+       if (!c || (c->_state != AST_STATE_UP))
+               needcancel = 1;
+       /* Disconnect */
+       p = c->pvt->pvt;
+       
+       /* Free dsp used for in-band DTMF detection */
+       if (p->vad) {
+               ast_dsp_free(p->vad);
+     }
+
+       p->owner = NULL;
+       c->pvt->pvt = NULL;
+
+       /* Start the process if it's not already started */
+       if (!p->alreadygone) {
+               if (h323_clear_call((p->cd).call_token)) 
+                       ast_log(LOG_DEBUG, "ClearCall failed.\n");
+               p->needdestroy = 1;
+       }
+
+       
+       ast_pthread_mutex_unlock(&p->lock);
+       return 0;
+}
+
+static struct ast_frame *oh323_rtp_read(struct oh323_pvt *p)
+{
+       /* Retrieve audio/etc from channel.  Assumes p->lock is already held. */
+       struct ast_frame *f;
+       static struct ast_frame null_frame = { AST_FRAME_NULL, };
+       f = ast_rtp_read(p->rtp);
+       /* Don't send RFC2833 if we're not supposed to */
+       if (f && (f->frametype == AST_FRAME_DTMF) && !(p->dtmfmode & H323_DTMF_RFC2833))
+               return &null_frame;
+       if (p->owner) {
+               /* We already hold the channel lock */
+               if (f->frametype == AST_FRAME_VOICE) {
+                       if (f->subclass != p->owner->nativeformats) {
+                               ast_log(LOG_DEBUG, "Oooh, format changed to %d\n", f->subclass);
+                               p->owner->nativeformats = f->subclass;
+                               ast_set_read_format(p->owner, p->owner->readformat);
+                               ast_set_write_format(p->owner, p->owner->writeformat);
+                       }
+               
+                       /* Do in-band DTMF detection */
+                       if (p->dtmfmode & H323_DTMF_INBAND) {
+                   f = ast_dsp_process(p->owner,p->vad,f,0);
+                                  if (f->frametype == AST_FRAME_DTMF)
+                                       ast_log(LOG_DEBUG, "Got in-band digit %c.\n", f->subclass);
+            }
+                       
+                       
+               }
+       }
+       return f;
+}
+
+
+static struct ast_frame  *oh323_read(struct ast_channel *c)
+{
+       struct ast_frame *fr;
+       struct oh323_pvt *p = c->pvt->pvt;
+       ast_pthread_mutex_lock(&p->lock);
+       fr = oh323_rtp_read(p);
+       ast_pthread_mutex_unlock(&p->lock);
+       return fr;
+}
+
+static int oh323_write(struct ast_channel *c, struct ast_frame *frame)
+{
+       struct oh323_pvt *p = c->pvt->pvt;
+       int res = 0;
+       if (frame->frametype != AST_FRAME_VOICE) {
+               if (frame->frametype == AST_FRAME_IMAGE)
+                       return 0;
+               else {
+                       ast_log(LOG_WARNING, "Can't send %d type frames with H323 write\n", frame->frametype);
+                       return 0;
+               }
+       } else {
+               if (!(frame->subclass & c->nativeformats)) {
+                       ast_log(LOG_WARNING, "Asked to transmit frame type %d, while native formats is %d (read/write = %d/%d)\n",
+                               frame->subclass, c->nativeformats, c->readformat, c->writeformat);
+                       return -1;
+               }
+       }
+       if (p) {
+               ast_pthread_mutex_lock(&p->lock);
+               if (p->rtp) {
+                       res =  ast_rtp_write(p->rtp, frame);
+               }
+               ast_pthread_mutex_unlock(&p->lock);
+       }
+       return res;
+}
+
+/** FIXME: Can I acutally use this or does Open H.323 take care of everything? */
+static int oh323_indicate(struct ast_channel *c, int condition)
+{
+
+       struct oh323_pvt *p = c->pvt->pvt;
+       
+       switch(condition) {
+       case AST_CONTROL_RINGING:
+               if (c->_state == AST_STATE_RING) {
+               //      transmit_response(p, "180 Ringing", &p->initreq);
+                       break;
+               }
+               return -1;
+       case AST_CONTROL_BUSY:
+               if (c->_state != AST_STATE_UP) {
+               //      transmit_response(p, "600 Busy everywhere", &p->initreq);
+                       p->alreadygone = 1;
+                       ast_softhangup(c, AST_SOFTHANGUP_DEV);
+                       break;
+               }
+               return -1;
+       case AST_CONTROL_CONGESTION:
+               if (c->_state != AST_STATE_UP) {
+               //      transmit_response(p, "486 Busy here", &p->initreq);
+                       p->alreadygone = 1;
+                       ast_softhangup(c, AST_SOFTHANGUP_DEV);
+                       break;
+               }
+               return -1;
+       case -1:
+               return -1;
+       default:
+               ast_log(LOG_WARNING, "Don't know how to indicate condition %d\n", condition);
+               return -1;
+       }
+       return 0;
+}
+
+// FIXME: WTF is this? Do I need this???
+static int oh323_fixup(struct ast_channel *oldchan, struct ast_channel *newchan)
+{
+       struct oh323_pvt *p = newchan->pvt->pvt;
+
+       ast_pthread_mutex_lock(&p->lock);
+       if (p->owner != oldchan) {
+               ast_log(LOG_WARNING, "old channel wasn't %p but was %p\n", oldchan, p->owner);
+               return -1;
+       }
+       p->owner = newchan;
+       ast_pthread_mutex_unlock(&p->lock);
+       return 0;
+}
+
+static struct ast_channel *oh323_new(struct oh323_pvt *i, int state, const char *host)
+{
+       struct ast_channel *tmp;
+       int fmt;
+       tmp = ast_channel_alloc(1);
+       
+       if (tmp) {
+               
+               snprintf(tmp->name, sizeof(tmp->name)-1, "H323/%s", host);
+               tmp->nativeformats = i->capability;
+               if (!tmp->nativeformats)
+                       tmp->nativeformats = capability;
+               fmt = ast_best_codec(tmp->nativeformats);
+               tmp->type = type;
+               tmp->fds[0] = ast_rtp_fd(i->rtp);
+               ast_setstate(tmp, state);
+               
+               if (state == AST_STATE_RING)
+                       tmp->rings = 1;
+               
+               tmp->writeformat = fmt;
+               tmp->pvt->rawwriteformat = fmt;
+               tmp->readformat = fmt;
+               tmp->pvt->rawreadformat = fmt;
+               
+               /* Allocate dsp for in-band DTMF support */
+               if (i->dtmfmode & H323_DTMF_INBAND) {
+                       i->vad = ast_dsp_new();
+                       ast_dsp_set_features(i->vad, DSP_FEATURE_DTMF_DETECT);
+        }
+
+               /* Register the OpenH323 channel's functions. */
+               tmp->pvt->pvt = i;
+               tmp->pvt->send_digit = oh323_digit;
+               tmp->pvt->call = oh323_call;
+               tmp->pvt->hangup = oh323_hangup;
+               tmp->pvt->answer = oh323_answer;
+               tmp->pvt->read = oh323_read;
+               tmp->pvt->write = oh323_write;
+               tmp->pvt->indicate = oh323_indicate;
+               tmp->pvt->fixup = oh323_fixup;
+//             tmp->pvt->bridge = ast_rtp_bridge;
+
+               /*  Set the owner of this channel */
+               i->owner = tmp;
+               
+               ast_pthread_mutex_lock(&usecnt_lock);
+               usecnt++;
+               ast_pthread_mutex_unlock(&usecnt_lock);
+               ast_update_use_count();
+               strncpy(tmp->context, i->context, sizeof(tmp->context)-1);
+               strncpy(tmp->exten, i->exten, sizeof(tmp->exten)-1);            
+               tmp->priority = 1;
+               if (strlen(i->callerid))
+                       tmp->callerid = strdup(i->callerid);
+               if (state != AST_STATE_DOWN) {
+                       printf ("oh323_new   EXTEN: %s\n", tmp->exten);
+                       printf ("oh323_new CONTEXT: %s\n", tmp->context);
+                       if (ast_pbx_start(tmp)) {
+                               ast_log(LOG_WARNING, "Unable to start PBX on %s\n", tmp->name);
+                               ast_hangup(tmp);
+                               tmp = NULL;
+                       }
+               }
+       } else
+               ast_log(LOG_WARNING, "Unable to allocate channel structure\n");
+       return tmp;
+}
+
+static struct oh323_pvt *oh323_alloc(int callid)
+{
+       struct oh323_pvt *p;
+
+       p = malloc(sizeof(struct oh323_pvt));
+       if (!p) {
+               ast_log(LOG_ERROR, "Couldn't allocate private structure. This is bad\n");
+               return NULL;
+       }
+
+       /* Keep track of stuff */
+       memset(p, 0, sizeof(struct oh323_pvt));
+       p->rtp = ast_rtp_new(NULL, NULL);
+       if (!p->rtp) {
+               ast_log(LOG_WARNING, "Unable to create RTP session: %s\n", strerror(errno));
+               free(p);
+               return NULL;
+       }
+       ast_rtp_settos(p->rtp, tos);
+       ast_pthread_mutex_init(&p->lock);
+       
+       p->cd.call_reference = callid;
+       p->bridge = 1;
+       
+       p->dtmfmode = dtmfmode;
+       if (p->dtmfmode & H323_DTMF_RFC2833)
+               p->nonCodecCapability |= AST_RTP_DTMF;
+
+       /* Add to interface list */
+       ast_pthread_mutex_lock(&iflock);
+       p->next = iflist;
+       iflist = p;
+       ast_pthread_mutex_unlock(&iflock);
+       return p;
+}
+
+static struct oh323_pvt *find_call(int call_reference)
+{  
+        struct oh323_pvt *p;
+
+               ast_pthread_mutex_lock(&iflock);
+        p = iflist; 
+
+        while(p) {
+                if (p->cd.call_reference == call_reference) {
+                        /* Found the call */                                           
+                                               ast_pthread_mutex_unlock(&iflock);
+                                               return p;
+                }
+                p = p->next; 
+        }
+        ast_pthread_mutex_unlock(&iflock);
+               return NULL;
+        
+}
+
+static struct ast_channel *oh323_request(char *type, int format, void *data)
+{
+
+       int oldformat;
+       struct oh323_pvt *p;
+       struct ast_channel *tmpc = NULL;
+       char *dest = data;
+       char *ext, *host;
+       char tmp[256];
+
+       ast_log(LOG_DEBUG, "type=%s, format=%d, data=%s.\n", type, format, (char *)data);
+
+       oldformat = format;
+       format &= capability;
+       if (!format) {
+               ast_log(LOG_NOTICE, "Asked to get a channel of unsupported format '%d'\n", format);
+               return NULL;
+       }
+       
+       strncpy(tmp, dest, sizeof(tmp) - 1);
+       host = strchr(tmp, '@');
+       if (host) {
+               *host = '\0';
+               host++;
+               ext = tmp;
+       } else {
+               host = tmp;
+               ext = NULL;
+       }
+       
+       p = oh323_alloc(0);
+
+       if (!p) {
+               ast_log(LOG_WARNING, "Unable to build pvt data for '%s'\n", (char *)data);
+               return NULL;
+       }
+
+       /* Assign a default capability */
+       p->capability = capability;
+
+       if (p->dtmfmode) {
+               if (p->dtmfmode & H323_DTMF_RFC2833)
+                       p->nonCodecCapability |= AST_RTP_DTMF;
+               else
+                       p->nonCodecCapability &= ~AST_RTP_DTMF;
+       }
+
+
+       ast_log(LOG_DEBUG, "Host: %s\tUsername: %s\n", host, p->username);
+
+       if (ext)
+               strncpy(p->username, ext, sizeof(p->username) - 1);
+       tmpc = oh323_new(p, AST_STATE_DOWN, host);
+       if (!tmpc)
+               oh323_destroy(p);
+       
+       restart_monitor();
+       
+       return tmpc;
+}
+
+struct oh323_alias *find_alias(const char *source_aliases)
+{
+       struct oh323_alias *a;
+
+       a = aliasl.aliases;
+
+       while(a) {
+
+               if (!strcasecmp(a->name, source_aliases)) {
+                       break;
+               }
+               a = a->next;
+       }
+       return a;
+}
+
+struct oh323_user *find_user(const char *source_aliases)
+{
+       struct oh323_user *u;
+
+       u = userl.users;
+
+       while(u) {
+
+               if (!strcasecmp(u->name, source_aliases)) {
+                       break;
+               }
+               u = u->next;
+       }
+       return u;
+
+}
+
+struct oh323_peer *find_peer(char *dest_peer)
+{
+       struct oh323_peer *p;
+
+       p = peerl.peers;
+
+       while(p) {
+               if (!strcasecmp(p->name, dest_peer)) {
+                       break;
+               }
+               p = p->next;
+       }
+       return p;
+
+}
+
+/**
+  * Callback for sending digits from H.323 up to asterisk
+  *
+  */
+int send_digit(unsigned call_reference, char digit)
+{
+       struct oh323_pvt *p;
+       struct ast_frame f;
+
+       ast_log(LOG_DEBUG, "Recieved Digit: %c\n", digit);
+       p = find_call(call_reference);
+       
+       if (!p) {
+               ast_log(LOG_ERROR, "Private structure not found in send_digit.\n");
+               return -1;
+       }
+       memset(&f, 0, sizeof(f));
+       f.frametype = AST_FRAME_DTMF;
+    f.subclass = digit;
+    f.datalen = 0;
+    f.samples = 300;
+       f.offset = 0;
+       f.data = NULL;
+    f.mallocd = 0;
+    f.src = "SEND_DIGIT";
+       
+       return ast_queue_frame(p->owner, &f, 1);        
+}
+
+/**
+  * Call-back function that gets called when any H.323 connection is made
+  *
+  * Returns the local RTP port
+  */
+int create_connection(unsigned call_reference)
+{      
+       struct oh323_pvt *p;
+       struct sockaddr_in us;
+
+       p = find_call(call_reference);
+
+       if (!p) {
+               ast_log(LOG_ERROR, "Unable to allocate private structure, this is very bad.\n");
+               return -1;
+       }
+
+       /* figure out our local RTP port and tell the H.323 stack about it*/
+       ast_rtp_get_us(p->rtp, &us);
+       return ntohs(us.sin_port);
+}
+
+/**
+ *  Call-back function for incoming calls
+ *
+ *  Returns 1 on success
+ */
+
+int setup_incoming_call(call_details_t cd)
+{
+
+       ast_log(LOG_DEBUG, "default_context [%s]\n", default_context);
+       
+       struct oh323_pvt *p = NULL;
+       struct ast_channel *c = NULL;
+       struct oh323_user *user = NULL;
+       struct oh323_alias *alias = NULL;
+
+       /* allocate the call*/
+       p = oh323_alloc(cd.call_reference);
+
+       if (!p) {
+               ast_log(LOG_ERROR, "Unable to allocate private structure, this is bad.\n");
+               return 0;
+       }
+
+       /* Populate the call details in the private structure */
+       p->cd.call_token = cd.call_token;
+       p->cd.call_source_aliases = cd.call_source_aliases;
+       p->cd.call_dest_alias = cd.call_dest_alias;
+       p->cd.call_source_e164 = cd.call_source_e164;
+       p->cd.call_dest_e164 = cd.call_dest_e164;
+
+       if (h323debug) {
+               printf("        == Setting up Call\n");
+               printf("           -- Calling party name:  %s\n", p->cd.call_source_aliases);
+               printf("           -- Calling party number:  %s\n", p->cd.call_source_e164);
+               printf("           -- Called  party name:  %s\n", p->cd.call_dest_alias);
+               printf("           -- Called  party number:  %s\n", p->cd.call_dest_e164);
+       }
+
+       /* Decide if we are allowing Gatekeeper routed calls*/
+       if ((!strcasecmp(cd.sourceIp, gatekeeper)) && (gkroute == -1) && (usingGk == 1)) {
+               
+               if (strlen(cd.call_dest_e164)) {
+                       strncpy(p->exten, cd.call_dest_e164, sizeof(p->exten)-1);
+                       strncpy(p->context, default_context, sizeof(p->context)-1); 
+               } else {
+                       alias = find_alias(cd.call_dest_alias);
+               
+                       if (!alias) {
+                               ast_log(LOG_ERROR, "Call for %s rejected, alias not found\n", cd.call_dest_alias);
+                               return 0;
+                       }
+                       printf("Alias found: %s and %s\n", alias->name, alias->context);
+
+                       strncpy(p->exten, alias->name, sizeof(p->exten)-1);
+                       strncpy(p->context, alias->context, sizeof(p->context)-1);
+               }
+
+               sprintf(p->callerid, "%s <%s>", p->cd.call_source_aliases, p->cd.call_source_e164);
+
+       } else { 
+               /* Either this call is not from the Gatekeeper 
+                  or we are not allowing gk routed calls */
+               
+               user  = find_user(cd.call_source_aliases);
+               
+               if (!user) {
+                       sprintf(p->callerid, "%s <%s>", p->cd.call_source_aliases, p->cd.call_source_e164); 
+                       if (strlen(p->cd.call_dest_e164)) {
+                               strncpy(p->exten, cd.call_dest_e164, sizeof(p->exten)-1);
+                       } else {
+                               strncpy(p->exten, cd.call_dest_alias, sizeof(p->exten)-1);              
+                       }
+                       if (!strlen(default_context)) {
+                               ast_log(LOG_ERROR, "Call from user '%s' rejected due to no default context\n", p->cd.call_source_aliases);
+                               return 0;
+                       }
+                       strncpy(p->context, default_context, sizeof(p->context)-1);
+                       ast_log(LOG_DEBUG, "Sending %s to context [%s]\n", cd.call_source_aliases, p->context);
+               } else {
+                       if (user->incominglimit > 0) {
+                               if (user->inUse >= user->incominglimit) {
+                                       ast_log(LOG_ERROR, "Call from user '%s' rejected due to usage limit of %d\n", user->name, user->incominglimit);
+                                       return 0;
+                               }
+                       }
+                       strncpy(p->context, user->context, sizeof(p->context)-1);
+                       p->bridge = user->bridge;
+
+                       if (strlen(user->callerid) && strlen(p->callerid)) 
+                               strncpy(p->callerid, user->callerid, sizeof(p->callerid) - 1);
+                       else
+                               sprintf(p->callerid, "%s <%s>", p->cd.call_source_aliases, p->cd.call_source_e164); 
+       
+                       if (strlen(p->cd.call_dest_e164)) {
+                               strncpy(p->exten, cd.call_dest_e164, sizeof(p->exten)-1);
+                       } else {
+                               strncpy(p->exten, cd.call_dest_alias, sizeof(p->exten)-1);              
+                       }
+
+                       if (strlen(user->accountcode)) {
+                               strncpy(p->accountcode, user->accountcode, sizeof(p->accountcode)-1);
+                       }
+       
+                       /* Increment the usage counter */
+                       user->inUse++;
+               } 
+       }
+       
+       printf ("CONTEXT: [%s]\n", p->context);
+       printf ("EXTEN: [%s]\n", p->exten);
+       /* allocate a channel and tell asterisk about it */
+       c = oh323_new(p, AST_STATE_RINGING, cd.call_token);
+
+       if (!c) {
+               ast_log(LOG_ERROR, "Couldn't create channel. This is bad\n");
+               return 0;
+       }
+
+       return 1;
+}
+
+/**
+ * Call-back function to establish an outgoing H.323 call
+ * 
+ * Returns 1 on success 
+ */
+int setup_outgoing_call(call_details_t cd)
+{      
+       return 1;
+}
+
+#if 0
+if (p->inUse >= p->outgoinglimit) {
+       ast_log(LOG_ERROR, "Call to %s rejected due to usage limit of %d outgoing channels\n", p->name, p->inUse);
+       return 0;
+}
+
+if (!p) {
+       ast_log(LOG_ERROR, "Rejecting call: peer %s not found\n", dest_peer);
+       return 0;
+}
+#endif
+
+/**
+  * Call-back function that gets called for each rtp channel opened 
+  *
+  * Returns nothing 
+  */
+void setup_rtp_connection(unsigned call_reference, const char *remoteIp, int remotePort)
+{
+       struct oh323_pvt *p = NULL;
+       struct sockaddr_in them;
+
+       /* Find the call or allocate a private structure if call not found */
+       p = find_call(call_reference);
+
+       if (!p) {
+               ast_log(LOG_ERROR, "Something is wrong: rtp\n");
+               return;
+       }
+
+       them.sin_family = AF_INET;
+       them.sin_addr.s_addr = inet_addr(remoteIp); // only works for IPv4
+       them.sin_port = htons(remotePort);
+       ast_rtp_set_peer(p->rtp, &them);
+
+       return;
+}
+
+/**  
+  *    Call-back function to signal asterisk that the channel has been answered 
+  * Returns nothing
+  */
+void connection_made(unsigned call_reference)
+{
+       struct ast_channel *c = NULL;
+       struct oh323_pvt *p = NULL;
+       
+       p = find_call(call_reference);
+       
+       if (!p)
+               ast_log(LOG_ERROR, "Something is wrong: connection\n");
+
+
+       if (!p->owner) {
+               printf("Channel has no owner\n");
+               return;
+       }
+       c = p->owner;   
+
+       ast_setstate(c, AST_STATE_UP);
+       return;
+}
+
+/**
+  * Call-back function to cleanup communication
+  * Returns nothing,
+  */
+void cleanup_connection(call_details_t cd)
+{      
+       struct oh323_pvt *p = NULL;
+//     struct oh323_peer *peer = NULL;
+       struct oh323_user *user = NULL;
+       struct ast_rtp *rtp = NULL;
+
+       ast_log(LOG_DEBUG, "Cleaning up our mess\n");
+       
+       p = find_call(cd.call_reference);
+
+       if (!p) {
+               return;
+       }
+
+       /* Decrement usage counter */
+       if (!p->outgoing) {
+               user = find_user(cd.call_source_aliases);
+               
+               if(user)
+                       user->inUse--;
+       }
+
+#if 0
+               if (p->outgoing) {
+               peer = find_peer(cd.call_dest_alias);
+               peer->inUse--;
+       } else {
+               user = find_user(cd.call_source_aliases);
+               user->inUse--;
+       }
+#endif
+       
+       if (p->rtp) {
+               rtp = p->rtp;
+               p->rtp = NULL;
+               /* Immediately stop RTP */
+               ast_rtp_destroy(rtp);
+       }
+       
+       p->alreadygone = 1;
+
+       /* Send hangup */       
+       if (p->owner)
+               ast_queue_hangup(p->owner, 1);
+
+       p = NULL;
+       return; 
+}
+
+static void *do_monitor(void *data)
+{
+       int res;
+       struct oh323_pvt *oh323 = NULL;
+       
+               for(;;) {
+               /* Check for interfaces needing to be killed */
+               ast_pthread_mutex_lock(&iflock);
+restartsearch:         
+               oh323 = iflist;
+               while(oh323) {
+                       if (oh323->needdestroy) {
+                               __oh323_destroy(oh323);
+                               goto restartsearch;
+                       }
+                       oh323 = oh323->next;
+               }
+               ast_pthread_mutex_unlock(&iflock);
+
+               pthread_testcancel();
+
+               /* Wait for sched or io */
+               res = ast_sched_wait(sched);
+               if ((res < 0) || (res > 1000))
+                       res = 1000;
+               res = ast_io_wait(io, res);
+               ast_pthread_mutex_lock(&monlock);
+               if (res >= 0) 
+                       ast_sched_runq(sched);
+               ast_pthread_mutex_unlock(&monlock);
+       }
+       /* Never reached */
+       return NULL;
+       
+}
+
+static int restart_monitor(void)
+{
+       /* If we're supposed to be stopped -- stay stopped */
+       if (monitor_thread == -2)
+               return 0;
+       if (ast_pthread_mutex_lock(&monlock)) {
+               ast_log(LOG_WARNING, "Unable to lock monitor\n");
+               return -1;
+       }
+       if (monitor_thread == pthread_self()) {
+               ast_pthread_mutex_unlock(&monlock);
+               ast_log(LOG_WARNING, "Cannot kill myself\n");
+               return -1;
+       }
+       if (monitor_thread) {
+               /* Wake up the thread */
+               pthread_kill(monitor_thread, SIGURG);
+       } else {
+               /* Start a new monitor */
+               if (pthread_create(&monitor_thread, NULL, do_monitor, NULL) < 0) {
+                       ast_pthread_mutex_unlock(&monlock);
+                       ast_log(LOG_ERROR, "Unable to start monitor thread.\n");
+                       return -1;
+               }
+       }
+       ast_pthread_mutex_unlock(&monlock);
+       return 0;
+}
+
+static int h323_do_trace(int fd, int argc, char *argv[])
+{
+       if (argc != 3)
+               return RESULT_SHOWUSAGE;
+       
+       h323_debug(1, atoi(argv[2]));
+       ast_cli(fd, "H.323 trace set to level %s\n", argv[2]);
+       return RESULT_SUCCESS;
+}
+
+static int h323_no_trace(int fd, int argc, char *argv[])
+{
+       if (argc != 3)
+               return RESULT_SHOWUSAGE;
+
+       h323_debug(0,0);
+       ast_cli(fd, "H.323 trace disabled\n");
+       return RESULT_SUCCESS;
+}
+
+static int h323_do_debug(int fd, int argc, char *argv[])
+{
+       if (argc != 2)
+               return RESULT_SHOWUSAGE;
+       
+       h323debug = 1;
+       ast_cli(fd, "H323 debug enabled\n");
+       return RESULT_SUCCESS;
+}
+
+static int h323_no_debug(int fd, int argc, char *argv[])
+{
+       if (argc != 3)
+               return RESULT_SHOWUSAGE;
+
+       h323debug = 0;
+       ast_cli(fd, "H323 Debug disabled\n");
+       return RESULT_SUCCESS;
+}
+
+static int h323_gk_cycle(int fd, int argc, char *argv[])
+{
+       if (argc != 3)
+               return RESULT_SHOWUSAGE;
+               
+       h323_gk_urq();
+       
+       /* Possibly register with a GK */
+       if (!gatekeeper_disable) {
+               if (h323_set_gk(gatekeeper_discover, gatekeeper, secret)) {
+                       ast_log(LOG_ERROR, "Gatekeeper registration failed.\n");
+                       h323_end_process();
+               }
+       }
+
+       return RESULT_SUCCESS;
+}
+
+
+static char trace_usage[] = 
+"Usage: h.323 trace <level num>\n"
+"       Enables H.323 stack tracing for debugging purposes\n";
+
+static char no_trace_usage[] = 
+"Usage: h.323 no trace\n"
+"       Disables H.323 stack tracing for debugging purposes\n";
+
+static char debug_usage[] = 
+"Usage: h.323 debug\n"
+"       Enables chan_h323 debug output\n";
+
+static char no_debug_usage[] = 
+"Usage: h.323 no debug\n"
+"       Disables chan_h323 debug output\n";
+
+static char show_codec_usage[] = 
+"Usage: h.323 show codec\n"
+"       Shows all enabled codecs\n";
+
+static char show_cycle_usage[] = 
+"Usage: h.323 gk cycle\n"
+"       Manually re-register with the Gatekeper\n";
+
+
+static struct ast_cli_entry  cli_trace =
+       { { "h.323", "trace", NULL }, h323_do_trace, "Enable H.323 Stack Tracing", trace_usage };
+static struct ast_cli_entry  cli_no_trace =
+       { { "h.323", "no", "trace", NULL }, h323_no_trace, "Disable H.323 Stack Tracing", no_trace_usage };
+static struct ast_cli_entry  cli_debug =
+       { { "h.323", "debug", NULL }, h323_do_debug, "Enable chan_h323 debug", debug_usage };
+static struct ast_cli_entry  cli_no_debug =
+       { { "h.323", "no", "debug", NULL }, h323_no_debug, "Disable chan_h323 debug", no_debug_usage };
+static struct ast_cli_entry  cli_show_codecs =
+       { { "h.323", "show", "codecs", NULL }, h323_show_codec, "Show enabled codecs", show_codec_usage };
+static struct ast_cli_entry  cli_gk_cycle =
+       { { "h.323", "gk", "cycle", NULL }, h323_gk_cycle, "Manually re-register with the Gatekeper", show_cycle_usage };
+
+
+
+int reload_config()
+{
+       
+       int format;
+       struct ast_config *cfg;
+       struct ast_variable *v;
+       struct oh323_peer *peer   = NULL;
+       struct oh323_user *user   = NULL;
+       struct oh323_alias *alias = NULL;
+       struct hostent *hp;
+       char *cat;
+    char *utype;
+       
+       cfg = ast_load(config);
+
+       /* We *must* have a config file otherwise stop immediately */
+       if (!cfg) {
+               ast_log(LOG_NOTICE, "Unable to load config %s, H.323 disabled\n", config);
+               return 0;
+       }
+       
+       h323debug=0;
+       dtmfmode = H323_DTMF_RFC2833;
+
+       memset(&bindaddr, 0, sizeof(bindaddr));
+
+       v = ast_variable_browse(cfg, "general");
+       while(v) {
+               /* Create the interface list */
+               if (!strcasecmp(v->name, "jitter")) {
+                       jitter = (int) strtol(v->value, NULL, 10);
+                       if (jitter < 20 || jitter > 10000) {
+                               ast_log(LOG_NOTICE, "Invalid jitter value! Valid range: 20ms to 10000ms. Recommended: 100ms");
+                               ast_destroy(cfg);
+                               return 0;
+                       } 
+               } else if (!strcasecmp(v->name, "port")) {
+                       port = (int)strtol(v->value, NULL, 10);
+               } else if (!strcasecmp(v->name, "bindaddr")) {
+                       if (!(hp = gethostbyname(v->value))) {
+                               ast_log(LOG_WARNING, "Invalid address: %s\n", v->value);
+                       } else {
+                               memcpy(&bindaddr.sin_addr, hp->h_addr, sizeof(bindaddr.sin_addr));
+                       }
+               } else if (!strcasecmp(v->name, "allow")) {
+                       format = ast_getformatbyname(v->value);
+                       if (format < 1) 
+                               ast_log(LOG_WARNING, "Cannot allow unknown format '%s'\n", v->value);
+                       else
+                               capability |= format;
+               } else if (!strcasecmp(v->name, "disallow")) {
+                       format = ast_getformatbyname(v->value);
+                       if (format < 1) 
+                               ast_log(LOG_WARNING, "Cannot disallow unknown format '%s'\n", v->value);
+                       else
+                               capability &= ~format;
+               } else if (!strcasecmp(v->name, "tos")) {
+                       if (sscanf(v->value, "%i", &format) == 1)
+                               tos = format & 0xff;
+                       else if (!strcasecmp(v->value, "lowdelay"))
+                               tos = IPTOS_LOWDELAY;
+                       else if (!strcasecmp(v->value, "throughput"))
+                               tos = IPTOS_THROUGHPUT;
+                       else if (!strcasecmp(v->value, "reliability"))
+                               tos = IPTOS_RELIABILITY;
+                       else if (!strcasecmp(v->value, "mincost"))
+                               tos = IPTOS_MINCOST;
+                       else if (!strcasecmp(v->value, "none"))
+                               tos = 0;
+                       else
+                               ast_log(LOG_WARNING, "Invalid tos value at line %d, should be 'lowdelay', 'throughput', 'reliability', 'mincost', or 'none'\n", v->lineno);
+               } else if (!strcasecmp(v->name, "gatekeeper")) {
+                       if (!strcasecmp(v->value, "DISABLE")) {
+                               gatekeeper_disable = 1;
+                               usingGk = 0;
+                       } else if (!strcasecmp(v->value, "DISCOVER")) {
+                               gatekeeper_disable = 0;
+                               gatekeeper_discover = 1;
+                               usingGk = 1;
+                       } else {
+                               gatekeeper_disable = 0;
+                               usingGk = 1;
+                               strncpy(gatekeeper, v->value, sizeof(gatekeeper)-1);
+                       }
+               } else if (!strcasecmp(v->name, "secret")) {
+                               strncpy(secret, v->value, sizeof(secret)-1);
+               } else if (!strcasecmp(v->name, "AllowGKRouted")) {
+                               gkroute = ast_true(v->value);
+               } else if (!strcasecmp(v->name, "context")) {
+                       strncpy(default_context, v->value, sizeof(default_context)-1);
+                       printf("  == Setting default context to %s\n", default_context);        
+               } else if (!strcasecmp(v->name, "manual")) {
+                               manual = ast_true(v->value);
+               } else if (!strcasecmp(v->name, "dtmfmode")) {
+                       if (!strcasecmp(v->value, "inband"))
+                               dtmfmode=H323_DTMF_INBAND;
+                       else if (!strcasecmp(v->value, "rfc2833"))
+                               dtmfmode = H323_DTMF_RFC2833;
+                       else {
+                               ast_log(LOG_WARNING, "Unknown dtmf mode '%s', using rfc2833\n", v->value);
+                               dtmfmode = H323_DTMF_RFC2833;
+                       }
+               }
+               v = v->next;    
+       }
+       
+       cat = ast_category_browse(cfg, NULL);
+       while(cat) {
+               if (strcasecmp(cat, "general")) {
+                       utype = ast_variable_retrieve(cfg, cat, "type");
+                       if (utype) {
+                               if (!strcasecmp(utype, "user") || !strcasecmp(utype, "friend")) {
+                                       user = build_user(cat, ast_variable_browse(cfg, cat));
+                                       if (user) {
+                                               ast_pthread_mutex_lock(&userl.lock);
+                                               user->next = userl.users;
+                                               userl.users = user;
+                                               ast_pthread_mutex_unlock(&userl.lock);
+                                       }
+                               }  else if (!strcasecmp(utype, "peer") || !strcasecmp(utype, "friend")) {
+                                       peer = build_peer(cat, ast_variable_browse(cfg, cat));
+                                       if (peer) {
+                                               ast_pthread_mutex_lock(&peerl.lock);
+                                               peer->next = peerl.peers;
+                                               peerl.peers = peer;
+                                               ast_pthread_mutex_unlock(&peerl.lock);
+                                       }
+                               }  else if (!strcasecmp(utype, "h323")) {                       
+                                       alias = build_alias(cat, ast_variable_browse(cfg, cat));
+                                       if (alias) {
+                                               ast_pthread_mutex_lock(&aliasl.lock);
+                                               alias->next = aliasl.aliases;
+                                               aliasl.aliases = alias;
+                                               ast_pthread_mutex_unlock(&aliasl.lock);
+                                       }
+                               } else {
+                                       ast_log(LOG_WARNING, "Unknown type '%s' for '%s' in %s\n", utype, cat, config);
+                               }
+                       } else
+                               ast_log(LOG_WARNING, "Section '%s' lacks type\n", cat);
+               }
+               cat = ast_category_browse(cfg, cat);
+       }
+
+       /* Register our H.323 aliases if any*/
+       while (alias) {         
+               if (h323_set_alias(alias)) {
+                       ast_log(LOG_ERROR, "Alias %s rejected by endpoint\n", alias->name);
+                       return -1;
+               }       
+               alias = alias->next;
+       }
+
+       /* Add some capabilities */
+       if(h323_set_capability(capability, dtmfmode)) {
+               ast_log(LOG_ERROR, "Capabilities failure, this is bad.\n");
+               return -1;
+       }       
+
+       printf("CONTEXT RELOAD: [%s]\n", default_context);
+
+       ast_destroy(cfg);
+
+       return 0;
+}
+
+void delete_users(void)
+{
+       struct oh323_user *user, *userlast;
+       struct oh323_peer *peer;
+       
+       /* Delete all users */
+       ast_pthread_mutex_lock(&userl.lock);
+       for (user=userl.users;user;) {
+               userlast = user;
+               user=user->next;
+               free(userlast);
+       }
+       userl.users=NULL;
+       ast_pthread_mutex_unlock(&userl.lock);
+       ast_pthread_mutex_lock(&peerl.lock);
+       for (peer=peerl.peers;peer;) {
+               /* Assume all will be deleted, and we'll find out for sure later */
+               peer->delme = 1;
+               peer = peer->next;
+       }
+       ast_pthread_mutex_unlock(&peerl.lock);
+}
+
+void delete_aliases(void)
+{
+       struct oh323_alias *alias, *aliaslast;
+               
+       /* Delete all users */
+       ast_pthread_mutex_lock(&aliasl.lock);
+       for (alias=aliasl.aliases;alias;) {
+               aliaslast = alias;
+               alias=alias->next;
+               free(aliaslast);
+       }
+       aliasl.aliases=NULL;
+       ast_pthread_mutex_unlock(&aliasl.lock);
+}
+
+void prune_peers(void)
+{
+       /* Prune peers who still are supposed to be deleted */
+       struct oh323_peer *peer, *peerlast, *peernext;
+       ast_pthread_mutex_lock(&peerl.lock);
+       peerlast = NULL;
+       for (peer=peerl.peers;peer;) {
+               peernext = peer->next;
+               if (peer->delme) {
+                       free(peer);
+                       if (peerlast)
+                               peerlast->next = peernext;
+                       else
+                               peerl.peers = peernext;
+               } else
+                       peerlast = peer;
+               peer=peernext;
+       }
+       ast_pthread_mutex_unlock(&peerl.lock);
+}
+
+int reload(void)
+{
+       delete_users();
+       delete_aliases();
+       prune_peers();
+
+       if (strlen(gatekeeper)) {
+               h323_gk_urq();
+       }
+
+       reload_config();
+
+       /* Possibly register with a GK */
+       if (!gatekeeper_disable) {
+               if (h323_set_gk(gatekeeper_discover, gatekeeper, secret)) {
+                       ast_log(LOG_ERROR, "Gatekeeper registration failed.\n");
+                       h323_end_process();
+                       return -1;
+               }
+       }
+       restart_monitor();
+       return 0;
+}
+
+
+static struct ast_rtp *oh323_get_rtp_peer(struct ast_channel *chan)
+{
+       struct oh323_pvt *p;
+       p = chan->pvt->pvt;
+       if (p && p->rtp && p->bridge)
+               return p->rtp;
+       return NULL;
+}
+
+static int oh323_set_rtp_peer(struct ast_channel *chan, struct ast_rtp *rtp)
+{
+       struct oh323_pvt *p;
+       struct sockaddr_in them;
+       struct sockaddr_in us;
+
+       if (!rtp) 
+               return 0;
+
+       p = chan->pvt->pvt;
+       if (!p) {
+               ast_log(LOG_ERROR, "No Private Structure, this is bad\n");
+               return -1;
+       }
+
+       ast_rtp_get_peer(rtp, &them);   
+       printf("peer is now: %s\n", inet_ntoa(them.sin_addr));
+               
+       ast_rtp_set_peer(p->rtp, &them);
+       ast_rtp_get_us(p->rtp, &us);
+
+       h323_native_bridge(p->cd.call_token, inet_ntoa(them.sin_addr), inet_ntoa(us.sin_addr));
+       
+       return 0;
+       
+}
+
+static struct ast_rtp_protocol oh323_rtp = {
+       get_rtp_info: oh323_get_rtp_peer,
+       set_rtp_peer: oh323_set_rtp_peer,
+};
+
+int load_module()
+{
+       int res;
+
+       /* fire up the H.323 Endpoint */ 
+       h323_end_point_create();
+
+       res = reload_config();
+       if (!res) {
+       /* Make sure we can register our channel type */
+               if (ast_channel_register(type, tdesc, capability, oh323_request)) {
+                       ast_log(LOG_ERROR, "Unable to register channel class %s\n", type);
+                       h323_end_process();
+                       return -1;
+               }
+               ast_cli_register(&cli_debug);
+               ast_cli_register(&cli_no_debug);
+               ast_cli_register(&cli_trace);
+               ast_cli_register(&cli_no_trace);
+               ast_cli_register(&cli_show_codecs);
+               ast_cli_register(&cli_gk_cycle);
+
+               oh323_rtp.type = type;
+               ast_rtp_proto_register(&oh323_rtp);
+
+               sched = sched_context_create();
+               if (!sched) {
+                       ast_log(LOG_WARNING, "Unable to create schedule context\n");
+               }
+               io = io_context_create();
+               if (!io) {
+                       ast_log(LOG_WARNING, "Unable to create I/O context\n");
+               }
+               
+               /* Register our callback functions */
+               h323_callback_register(setup_incoming_call, 
+                                                          setup_outgoing_call, 
+                                                          create_connection, 
+                                                          setup_rtp_connection, 
+                                                          cleanup_connection, 
+                                                          connection_made, send_digit);        
+       
+               /* start the h.323 listener */
+               if (h323_start_listener(port, bindaddr, jitter)) {
+                       ast_log(LOG_ERROR, "Unable to create H323 listener.\n");
+                       h323_end_process();
+                       return -1;
+               }
+
+               /* Possibly register with a GK */
+               if (!gatekeeper_disable) {
+                       if (h323_set_gk(gatekeeper_discover, gatekeeper, secret)) {
+                               ast_log(LOG_ERROR, "Gatekeeper registration failed.\n");
+                               h323_end_process();
+                               return -1;
+                       }
+               }
+               /* And start the monitor for the first time */
+               restart_monitor();
+       } else {
+               h323_end_process();
+       }
+       return res;
+}
+int unload_module() 
+{
+       struct oh323_pvt *p, *pl;
+               
+       if (!ast_pthread_mutex_lock(&iflock)) {
+       /* hangup all interfaces if they have an owner */
+       p = iflist;
+       while(p) {
+               if (p->owner)
+                       ast_softhangup(p->owner, AST_SOFTHANGUP_APPUNLOAD);
+               p = p->next;
+       }
+       iflist = NULL;
+       ast_pthread_mutex_unlock(&iflock);
+       } else {
+               ast_log(LOG_WARNING, "Unable to lock the interface list\n");
+               return -1;
+       }
+               
+       if (!ast_pthread_mutex_lock(&iflock)) {
+               /* destroy all the interfaces and free their memory */
+               p = iflist;
+               while(p) {
+                       pl = p;
+                       p = p->next;
+                       /* free associated memory */
+                       free(pl);
+               }
+               iflist = NULL;
+               ast_pthread_mutex_unlock(&iflock);
+       } else {
+               ast_log(LOG_WARNING, "Unable to lock the interface list\n");
+               return -1;
+       }
+       h323_gk_urq();
+       h323_end_process();
+
+       /* unregister channel type */
+       ast_channel_unregister(type);
+
+       return 0;
+
+}
+
+int usecount()
+{
+       int res;
+       ast_pthread_mutex_lock(&usecnt_lock);
+       res = usecnt;
+       ast_pthread_mutex_unlock(&usecnt_lock);
+       return res;
+}
+
+char *description()
+{
+       return desc;
+}
+
+char *key()
+{
+       return ASTERISK_GPL_KEY;
+}
+
+
+
+
diff --git a/channels/h323/chan_h323.h b/channels/h323/chan_h323.h
new file mode 100755 (executable)
index 0000000..ec718f9
--- /dev/null
@@ -0,0 +1,186 @@
+/*
+ * chan_oh323.h
+ *
+ * OpenH323 Channel Driver for ASTERISK PBX.
+ *                     By Jeremy McNamara
+ *                     For The NuFone Network
+ *     
+ * This code has been derived from code created by 
+ *             Michael Manousos and Mark Spencer
+ *
+ * This file is part of the chan_oh323 driver for Asterisk
+ *
+ * chan_oh323 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. 
+ *
+ * chan_oh323 is distributed 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., 675 Mass Ave, Cambridge, MA 02139, USA. 
+ *
+ */
+
+#include <arpa/inet.h>
+
+static struct sockaddr_in bindaddr;
+
+/* structure to hold the valid asterisk users */
+struct oh323_user {
+       char name[80];
+       char context[80];
+       char secret[80];
+       char callerid[80];
+       char accountcode[20];
+       int amaflags;
+       int     noFastStart;
+       int     noH245Tunneling;
+       int     noSilenceSuppression;
+       int inUse;
+       int incominglimit;
+       int bridge;
+       int nat;
+       int dtmfmode;
+       struct ast_ha *ha;
+       struct sockaddr_in addr;
+       struct oh323_user *next;
+};
+
+/* structure to hold the valid asterisk peers 
+   All peers are registered to a GK if there is one */
+struct oh323_peer {
+       char name[80];
+       char context[80];
+       int     noFastStart;
+       int     noH245Tunneling;
+       int     noSilenceSuppression;
+       int inUse;
+       int outgoinglimit;
+       int bridge;
+       int nat;
+       int dtmfmode;
+       struct sockaddr_in addr;
+       int delme;
+       struct oh323_peer *next;
+};
+
+/* structure to hold the H.323 aliases which get registered to 
+   the H.323 endpoint and gatekeeper */
+struct oh323_alias {
+       char name[80];
+       char e164[20];                          /* tells a GK to route this E.164 to this alias */
+       char prefix[500];                       /* tells a GK this alias supports these prefixes */
+       char secret[20];                        /* the H.235 password to send to the GK for authentication */
+       char context[80];
+       struct oh323_alias *next;       
+};
+
+/** call_option struct is filled from the 
+       PBX application and passed through make_call 
+       function*/
+typedef struct call_options {
+       int                             noFastStart;
+       int                             noH245Tunnelling;
+       int                             noSilenceSuppression;
+       int                             jitter;
+       unsigned int    port;
+} call_options_t;
+
+/** call_details struct call detail records 
+       to asterisk for processing and used for matching up 
+       asterisk channels to acutal h.323 connections */
+typedef struct call_details {  
+       unsigned int call_reference;
+       const char *call_token;                         
+       const char *call_source_aliases;
+       const char *call_dest_alias;
+       const char *call_source_e164;
+       const char *call_dest_e164;
+       const char *sourceIp;
+} call_details_t;
+
+/* This is a callback prototype function, called pass
+   DTMF down the RTP. */
+typedef int (*send_digit_cb)(unsigned, char);
+send_digit_cb  on_send_digit; 
+
+/* This is a callback prototype function, called to collect
+   the external RTP port from Asterisk. */
+typedef int (*on_connection_cb)(unsigned);
+on_connection_cb       on_create_connection; 
+
+/* This is a callback prototype function, called upon
+   an incoming call happens. */
+typedef int (*setup_incoming_cb)(call_details_t);
+setup_incoming_cb              on_incoming_call;
+
+/* This is a callback prototype function, called upon
+   an outbound call. */
+typedef int (*setup_outbound_cb)(call_details_t);
+setup_outbound_cb      on_outgoing_call; 
+
+/* This is a callback prototype function, called when the openh323 
+   OnStartLogicalChannel is invoked. */
+typedef void (*start_logchan_cb)(unsigned int, const char *, int);
+start_logchan_cb       on_start_logical_channel; 
+
+/* This is a callback protoype function, called when the openh323
+   OnConnectionEstablished is inovked */
+typedef void (*con_established_cb)(unsigned);
+con_established_cb             on_connection_established;
+
+/* This is a callback prototype function, called when the openH323
+   OnConnectionCleared callback is invoked */
+typedef void (*clear_con_cb)(call_details_t);
+clear_con_cb           on_connection_cleared;
+
+/* debug flag */
+int h323debug;
+
+#define H323_DTMF_RFC2833      (1 << 0)
+#define H323_DTMF_INBAND       (1 << 1)
+
+#ifdef __cplusplus
+extern "C" {
+#endif   
+    
+       void h323_gk_urq(void);
+       void h323_end_point_create(void);
+       void h323_end_process(void);
+       int end_point_exist(void);
+    
+       void h323_debug(int, unsigned);
+
+       /* callback function handler*/
+       void h323_callback_register(setup_incoming_cb, setup_outbound_cb, on_connection_cb, start_logchan_cb, clear_con_cb, con_established_cb, send_digit_cb);
+
+       int h323_set_capability(int, int);
+       int h323_set_alias(struct oh323_alias *);
+       int h323_set_gk(int, char *, char *);
+
+       /* H323 listener related funcions */
+       int h323_start_listener(int, struct sockaddr_in, int);
+
+       void h323_native_bridge(const char *, char *, char *);
+
+       /* Send a DTMF tone to remote endpoint */
+       void h323_send_tone(const char *call_token, char tone);
+
+       /* H323 create and destroy sessions */
+       int h323_make_call(char *host, call_details_t *cd, call_options_t);
+       int h323_clear_call(const char *);
+       int h323_answering_call(const char *token, int);
+       
+       int h323_show_codec(int fd, int argc, char *argv[]);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+
diff --git a/channels/h323/h323.conf.sample b/channels/h323/h323.conf.sample
new file mode 100755 (executable)
index 0000000..c3009fb
--- /dev/null
@@ -0,0 +1,138 @@
+; The NuFone Network's
+; Open H.323 driver configuration
+;
+[general]
+port = 1720
+bindaddr = 0.0.0.0 
+;tos=lowdelay
+;
+; You may specify a global default AMA flag for iaxtel calls.  It must be
+; one of 'default', 'omit', 'billing', or 'documentation'.  These flags
+; are used in the generation of call detail records.
+;
+;amaflags = default
+;
+; You may specify a default account for Call Detail Records in addition
+; to specifying on a per-user basis
+;
+;accountcode=lss0101
+;
+; You can fine tune codecs here using "allow" and "disallow" clauses
+; with specific codecs.  Use "all" to represent all formats.
+;
+;allow=all             ; turns on all installed codecs
+;disallow=g723.1               ; Hm...  Proprietary, don't use it...
+;allow=gsm             ; Always allow GSM, it's cool :)
+;allow=ulaw
+;
+; Options for broken H.323 stacks
+;noFastStart = no
+;noH245Tunneling = no
+;noSilenceSuppression = no
+;
+; jitter buffer 
+;jitter = 100
+;
+; User-Input Mode (DTMF)
+;
+; valid entries are:   rfc2833, inband
+; default is rfc2833
+;dtmfmode=rfc2833
+;
+; Set the gatekeeper 
+; DISCOVER                     - Find the Gk address using multicast
+; DISABLE                      - Disable the use of a GK
+; <IP address> or <Host name>  - The acutal IP address or hostname of your GK
+;gatekeeper = DISABLE
+;
+;
+; Tell Asterisk whether or not to accept Gatekeeper
+; routed calls or not. Normally this should always
+; be set to yes, unless you want to have finer control
+; over which users are allowed access to Asterisk.
+; Default: YES
+;
+;AllowGKRouted = yes
+;
+; Default context gets used in siutations where you are using 
+; the GK routed model or no type=user was found. This gives you 
+; the ability to either play an invalid message or to simply not 
+; use user authentication at all.
+;
+;context=default
+;
+; H.323 Alias definitions
+;
+; Type 'h323' will register aliases to the endpoint
+; and Gatekeeper, if there is one.
+;
+; Example: if someone calls time@your.asterisk.box.com
+; Asterisk will send the call to the extension 'time' 
+; in the context default
+;
+;   [default]
+;   exten => time,1,Answer
+;   exten => time,2,Playback,current-time
+;
+; Keyword's 'prefix' and 'e164' are only make sense when
+; used with a gatekeeper. You can specify either a prefix 
+; or E.164 this endpoint is responsible for terminating.
+; 
+; Example: The H.323 alias 'det-gw' will tell the gatekeeper
+; to route any call with the prefix 1248 to this alias. Keyword
+; e164 is used when you want to specifiy a full telephone
+; number. So a call to the number 18102341212 would be 
+; routed to the H.323 alias 'time'.
+;
+;[time]
+;type=h323
+;e164=18102341212
+;context=default
+;
+;[det-gw]
+;type=h323
+;prefix=1248,1313
+;context=detroit
+;
+;
+; Inbound H.323 calls from BillyBob would land in the incoming
+; context with a maximum of 4 concurrent incoming calls
+; using a password of 'supersecret'
+;
+; Note: If keywords 'outgoinglimit' or 'incominglimit' are omitted
+; Asterisk will not enforce any maximum number of concurrent calls.
+;
+; If you wish to use Authentication you need to set the approprate
+; auth keyword above.
+;
+;[BillyBob]
+;type=user
+;secret=supersecret
+;context=incoming
+;incominglimit=4
+;
+; Asterisk would allow 2 concurrent outgoing calls to JoeSmow
+; using 192.168.1.15 as his IP and will use the context outbound
+;
+;[JoeSmo]
+;type=peer
+;host=192.168.1.15
+;context=outgoing
+;outgoinglimit=2
+;
+; Asterisk would allow 6 concurrent incoming calls to be 
+; recieved from and 4 concurrent outgoing calls to be placed 
+; to SouthOffice using 192.168.0.2 as his IP and 
+; 'securepassword' has the password and lands in the 
+; default context
+;
+;[SouthOffice]
+;type=friend
+;host=192.168.0.2
+;secret=securepassword
+;context=default
+;incominglimit=6
+;outgoinglimit=4
+
+
+