diff --git a/channels/h323/ChangeLog b/channels/h323/ChangeLog new file mode 100755 index 0000000000..83bdff31e7 --- /dev/null +++ b/channels/h323/ChangeLog @@ -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 index 0000000000..35745004db --- /dev/null +++ b/channels/h323/Makefile @@ -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 index 0000000000..c56368f3e5 --- /dev/null +++ b/channels/h323/README @@ -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 index 0000000000..1514aef592 --- /dev/null +++ b/channels/h323/TODO @@ -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 index 0000000000..831092fdd1 --- /dev/null +++ b/channels/h323/ast_h323.cpp @@ -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; pSendUserInputTone(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 index 0000000000..a7604834e1 --- /dev/null +++ b/channels/h323/ast_h323.h @@ -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 +#include +#include +#include +#include + +#include +#include +#include + +#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 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 index 0000000000..12b64dadbc --- /dev/null +++ b/channels/h323/chan_h323.c @@ -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 +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + + +#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 \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 index 0000000000..ec718f9a18 --- /dev/null +++ b/channels/h323/chan_h323.h @@ -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 + +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 index 0000000000..c3009fb836 --- /dev/null +++ b/channels/h323/h323.conf.sample @@ -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 +; or - 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 + + +