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windows-server-2003/enduser/netmeeting/av/callcont/callcon2.c

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/****************************************************************************
*
* $Archive: S:/STURGEON/SRC/CALLCONT/VCS/callcon2.c_v $
*
* INTEL Corporation Prorietary Information
*
* This listing is supplied under the terms of a license agreement
* with INTEL Corporation and may not be copied nor disclosed except
* in accordance with the terms of that agreement.
*
* Copyright (c) 1996 Intel Corporation.
*
* $Revision: 1.35 $
* $Date: 03 Mar 1997 09:08:16 $
* $Author: MANDREWS $
*
* Deliverable:
*
* Abstract:
*
* Notes:
*
***************************************************************************/
#ifdef GATEKEEPER
#include "precomp.h"
#include "apierror.h"
#include "incommon.h"
#include "callcont.h"
#include "q931.h"
#include "ccmain.h"
#include "confman.h"
#include "listman.h"
#include "q931man.h"
#include "h245man.h"
#include "callman.h"
#include "userman.h"
#include "chanman.h"
#include "hangman.h"
#include "linkapi.h"
#include "h245api.h"
#include "ccutils.h"
#include "callman2.h"
#define HResultLeave(x) return x
extern CC_CONFERENCEID InvalidConferenceID;
//
// Complete CC_xxx Operations
//
HRESULT ListenReject (CC_HLISTEN hListen, HRESULT Reason)
{
HRESULT status;
PLISTEN pListen;
CC_LISTEN_CALLBACK_PARAMS ListenCallbackParams;
ASSERT(GKIExists());
status = LockListen(hListen, &pListen);
if (status == CC_OK) {
ListenCallbackParams.hCall = CC_INVALID_HANDLE;
ListenCallbackParams.pCallerAliasNames = NULL;
ListenCallbackParams.pCalleeAliasNames = NULL;
ListenCallbackParams.pNonStandardData = NULL;
ListenCallbackParams.pszDisplay = NULL;
ListenCallbackParams.pVendorInfo = NULL;
ListenCallbackParams.ConferenceID = InvalidConferenceID;
ListenCallbackParams.pCallerAddr = NULL;
ListenCallbackParams.pCalleeAddr = NULL;
ListenCallbackParams.dwListenToken = pListen->dwListenToken;
// Invoke the user callback -- the listen object is locked during the callback,
// but the associated call object is unlocked (to prevent deadlock if
// CC_AcceptCall() or CC_RejectCall() is called during the callback from a
// different thread, and the callback thread blocks pending completion of
// CC_AcceptCall() or CC_RejectCall())
InvokeUserListenCallback(pListen,
Reason,
&ListenCallbackParams);
// Need to validate the listen handle; the associated object may have been
// deleted during the user callback by this thread
if (ValidateListen(hListen) == CC_OK) {
HQ931LISTEN hQ931Listen = pListen->hQ931Listen;
UnlockListen(pListen);
status = Q931CancelListen(hQ931Listen);
if (LockListen(hListen, &pListen) == CC_OK) {
FreeListen(pListen);
}
}
}
HResultLeave(status);
} // ListenReject()
HRESULT PlaceCallConfirm (void *pCallVoid, void *pConferenceVoid)
{
register PCALL pCall = (PCALL) pCallVoid;
HRESULT status;
ASSERT(GKIExists());
// Free Alias lists
if (pCall->GkiCall.pCalleeAliasNames != NULL) {
Q931FreeAliasNames(pCall->GkiCall.pCalleeAliasNames);
pCall->GkiCall.pCalleeAliasNames = NULL;
}
if (pCall->GkiCall.pCalleeExtraAliasNames != NULL) {
Q931FreeAliasNames(pCall->GkiCall.pCalleeExtraAliasNames);
pCall->GkiCall.pCalleeExtraAliasNames = NULL;
}
if (pCall->pQ931PeerConnectAddr == NULL) {
pCall->pQ931PeerConnectAddr = (PCC_ADDR)MemAlloc(sizeof(CC_ADDR));
if (pCall->pQ931PeerConnectAddr == NULL)
return PlaceCallReject(pCallVoid, pConferenceVoid, CC_NO_MEMORY);
}
pCall->pQ931PeerConnectAddr->nAddrType = CC_IP_BINARY;
pCall->pQ931PeerConnectAddr->bMulticast = FALSE;
pCall->pQ931PeerConnectAddr->Addr.IP_Binary.wPort = pCall->GkiCall.wPort;
pCall->pQ931PeerConnectAddr->Addr.IP_Binary.dwAddr = ntohl(pCall->GkiCall.dwIpAddress);
status = PlaceCall(pCall, (PCONFERENCE)pConferenceVoid);
if (status != CC_OK)
PlaceCallReject(pCallVoid, pConferenceVoid, status);
return status;
} // PlaceCallConfirm()
HRESULT PlaceCallReject (void *pCallVoid, void *pConferenceVoid, HRESULT Reason)
{
register PCALL pCall = (PCALL) pCallVoid;
register PCONFERENCE pConference = (PCONFERENCE) pConferenceVoid;
CC_HCONFERENCE hConference;
HRESULT status = CC_OK;
CC_CONNECT_CALLBACK_PARAMS ConnectCallbackParams = {0};
CC_HCALL hCall;
PCALL pCall2;
ASSERT(GKIExists());
ASSERT(pCall != NULL);
ASSERT(pConference != NULL);
// Free Alias lists
if (pCall->GkiCall.pCalleeAliasNames != NULL) {
Q931FreeAliasNames(pCall->GkiCall.pCalleeAliasNames);
pCall->GkiCall.pCalleeAliasNames = NULL;
}
if (pCall->GkiCall.pCalleeExtraAliasNames != NULL) {
Q931FreeAliasNames(pCall->GkiCall.pCalleeExtraAliasNames);
pCall->GkiCall.pCalleeExtraAliasNames = NULL;
}
// Inform Call Control client of failure
ConnectCallbackParams.pNonStandardData = pCall->pPeerNonStandardData;
ConnectCallbackParams.pszPeerDisplay = pCall->pszPeerDisplay;
ConnectCallbackParams.bRejectReason = 0;
ConnectCallbackParams.pTermCapList = pCall->pPeerH245TermCapList;
ConnectCallbackParams.pH2250MuxCapability = pCall->pPeerH245H2250MuxCapability;
ConnectCallbackParams.pTermCapDescriptors = pCall->pPeerH245TermCapDescriptors;
ConnectCallbackParams.pLocalAddr = pCall->pQ931LocalConnectAddr;
if (pCall->pQ931DestinationAddr == NULL)
ConnectCallbackParams.pPeerAddr = pCall->pQ931PeerConnectAddr;
else
ConnectCallbackParams.pPeerAddr = pCall->pQ931DestinationAddr;
ConnectCallbackParams.pVendorInfo = pCall->pPeerVendorInfo;
if (pConference->ConferenceMode == MULTIPOINT_MODE)
ConnectCallbackParams.bMultipointConference = TRUE;
else
ConnectCallbackParams.bMultipointConference = FALSE;
ConnectCallbackParams.pConferenceID = &pConference->ConferenceID;
ConnectCallbackParams.pMCAddress = pConference->pMultipointControllerAddr;
ConnectCallbackParams.pAlternateAddress = NULL;
ConnectCallbackParams.dwUserToken = pCall->dwUserToken;
hConference = pConference->hConference;
InvokeUserConferenceCallback(pConference,
CC_CONNECT_INDICATION,
Reason,
&ConnectCallbackParams);
if (ValidateConference(hConference) == CC_OK) {
// Start up an enqueued call, if one exists
for ( ; ; ) {
status = RemoveEnqueuedCallFromConference(pConference, &hCall);
if ((status != CC_OK) || (hCall == CC_INVALID_HANDLE))
break;
status = LockCall(hCall, &pCall2);
if (status == CC_OK) {
pCall2->CallState = PLACED;
status = PlaceCall(pCall2, pConference);
UnlockCall(pCall2);
if (status == CC_OK)
break;
}
}
}
HResultLeave(status);
} // PlaceCallReject()
HRESULT AcceptCallConfirm (void *pCallVoid, void *pConferenceVoid)
{
CC_HCALL hCall = ((PCALL)pCallVoid)->hCall;
CC_HCONFERENCE hConference = ((PCONFERENCE)pConferenceVoid)->hConference;
HRESULT status;
ASSERT(GKIExists());
status = AcceptCall((PCALL)pCallVoid, (PCONFERENCE)pConferenceVoid);
LockConference(hConference, (PPCONFERENCE)&pConferenceVoid);
LockCall(hCall, (PPCALL)&pCallVoid);
if (status != CC_OK && pCallVoid != NULL && pConferenceVoid != NULL)
AcceptCallReject(pCallVoid, pConferenceVoid, status);
return status;
} // AcceptCallConfirm()
HRESULT AcceptCallReject (void *pCallVoid, void *pConferenceVoid, HRESULT Reason)
{
register PCALL pCall = (PCALL) pCallVoid;
register PCONFERENCE pConference = (PCONFERENCE) pConferenceVoid;
HRESULT status = CC_OK;
CC_CONNECT_CALLBACK_PARAMS ConnectCallbackParams = {0};
ASSERT(GKIExists());
status = Q931RejectCall(pCall->hQ931Call, // Q931 call handle
CC_REJECT_GATEKEEPER_RESOURCES,
&pCall->ConferenceID, // Conference Identifier
NULL, // alternate address
pCall->pLocalNonStandardData);
ConnectCallbackParams.pNonStandardData = pCall->pPeerNonStandardData;
ConnectCallbackParams.pszPeerDisplay = pCall->pszPeerDisplay;
ConnectCallbackParams.bRejectReason = 0;
ConnectCallbackParams.pTermCapList = pCall->pPeerH245TermCapList;
ConnectCallbackParams.pH2250MuxCapability = pCall->pPeerH245H2250MuxCapability;
ConnectCallbackParams.pTermCapDescriptors = pCall->pPeerH245TermCapDescriptors;
ConnectCallbackParams.pLocalAddr = pCall->pQ931LocalConnectAddr;
if (pCall->pQ931DestinationAddr == NULL)
ConnectCallbackParams.pPeerAddr = pCall->pQ931PeerConnectAddr;
else
ConnectCallbackParams.pPeerAddr = pCall->pQ931DestinationAddr;
if (pConference->ConferenceMode == MULTIPOINT_MODE)
ConnectCallbackParams.bMultipointConference = TRUE;
else
ConnectCallbackParams.bMultipointConference = FALSE;
ConnectCallbackParams.pVendorInfo = pCall->pPeerVendorInfo;
ConnectCallbackParams.pConferenceID = &pConference->ConferenceID;
ConnectCallbackParams.pMCAddress = pConference->pMultipointControllerAddr;
ConnectCallbackParams.pAlternateAddress = NULL;
ConnectCallbackParams.dwUserToken = pCall->dwUserToken;
InvokeUserConferenceCallback(pConference,
CC_CONNECT_INDICATION,
Reason,
&ConnectCallbackParams);
HResultLeave(status);
} // AcceptCallReject()
#if 0
HRESULT CancelCallConfirm (void *pCallVoid, void *pConferenceVoid)
{
PCALL pCall = (PCALL) pCallVoid;
PCONFERENCE pConference = (PCONFERENCE) pConferenceVoid;
HRESULT status;
H245_INST_T H245Instance;
HQ931CALL hQ931Call;
CC_HCONFERENCE hConference;
HRESULT SaveStatus;
CC_HCALL hCall;
ASSERT(GKIExists());
H245Instance = pCall->H245Instance;
hQ931Call = pCall->hQ931Call;
hConference = pCall->hConference;
FreeCall(pCall);
if (H245Instance != H245_INVALID_ID)
SaveStatus = H245ShutDown(H245Instance);
else
SaveStatus = H245_ERROR_OK;
if (SaveStatus == H245_ERROR_OK) {
SaveStatus = Q931Hangup(hQ931Call, CC_REJECT_UNDEFINED_REASON);
// Q931Hangup may legitimately return CS_BAD_PARAM, because the Q.931 call object
// may have been deleted at this point
if (SaveStatus == CS_BAD_PARAM)
SaveStatus = CC_OK;
} else
Q931Hangup(hQ931Call, CC_REJECT_UNDEFINED_REASON);
// Start up an enqueued call, if one exists
for ( ; ; ) {
status = RemoveEnqueuedCallFromConference(pConference, &hCall);
if ((status != CC_OK) || (hCall == CC_INVALID_HANDLE))
break;
status = LockCall(hCall, &pCall);
if (status == CC_OK) {
pCall->CallState = PLACED;
status = PlaceCall(pCall, pConference);
UnlockCall(pCall);
if (status == CC_OK)
break;
}
}
UnlockConference(pConference);
if (SaveStatus != CC_OK)
status = SaveStatus;
HResultLeave(status);
} // CancelCallConfirm()
HRESULT CancelCallReject (void *pCallVoid, void *pConferenceVoid)
{
// I don't care what the Gatekeeper says; I'm shutting down the call!
return CancelCallConfirm(pCallVoid, pConferenceVoid);
} // CancelCallReject()
#endif
HRESULT OpenChannelConfirm (CC_HCHANNEL hChannel)
{
HRESULT status;
PCHANNEL pChannel;
PCONFERENCE pConference;
WORD wNumCalls;
PCC_HCALL CallList;
HRESULT SaveStatus;
unsigned i;
PCALL pCall;
ASSERT(GKIExists());
status = LockChannelAndConference(hChannel, &pChannel, &pConference);
if (status == CC_OK) {
// Open a logical channel for each established call
status = EnumerateCallsInConference(&wNumCalls, &CallList, pConference, ESTABLISHED_CALL);
if (status == CC_OK) {
SaveStatus = CC_OK;
for (i = 0; i < wNumCalls; ++i) {
if (LockCall(CallList[i], &pCall) == CC_OK) {
status = H245OpenChannel(pCall->H245Instance, // H245 instance
pChannel->hChannel, // dwTransId
pChannel->wLocalChannelNumber,
pChannel->pTxH245TermCap, // TxMode
pChannel->pTxMuxTable, // TxMux
H245_INVALID_PORT_NUMBER, // TxPort
pChannel->pRxH245TermCap, // RxMode
pChannel->pRxMuxTable, // RxMux
pChannel->pSeparateStack);
if (status == H245_ERROR_OK)
(pChannel->wNumOutstandingRequests)++;
else
SaveStatus = status;
UnlockCall(pCall);
}
}
if (CallList != NULL)
MemFree(CallList);
if (pChannel->wNumOutstandingRequests == 0) {
// all open channel requests failed
FreeChannel(pChannel);
}
else {
UnlockChannel(pChannel);
}
if (SaveStatus != CC_OK)
status = SaveStatus;
}
else {
FreeChannel(pChannel);
}
UnlockConference(pConference);
}
HResultLeave(status);
} // OpenChannelConfirm()
HRESULT OpenChannelReject (CC_HCHANNEL hChannel, HRESULT Reason)
{
PCHANNEL pChannel;
PCONFERENCE pConference;
CC_HCONFERENCE hConference;
HRESULT status;
CC_TX_CHANNEL_OPEN_CALLBACK_PARAMS Params = {0};
ASSERT(GKIExists());
status = LockChannelAndConference(hChannel, &pChannel, &pConference);
if (status == CC_OK) {
// Inform Call Control client of failure
Params.hChannel = hChannel;
Params.pPeerRTPAddr = pChannel->pPeerRTPAddr;
Params.pPeerRTCPAddr = pChannel->pPeerRTCPAddr;
Params.dwRejectReason = 0;
Params.dwUserToken = pChannel->dwUserToken;
hConference = pConference->hConference;
InvokeUserConferenceCallback(pConference,
CC_TX_CHANNEL_OPEN_INDICATION,
Reason,
&Params);
if (ValidateChannel(hChannel) == CC_OK)
FreeChannel(pChannel);
if (ValidateConference(hConference) == CC_OK)
UnlockConference(pConference);
}
HResultLeave(status);
} // OpenChannelReject()
HRESULT AcceptChannelConfirm(CC_HCHANNEL hChannel)
{
HRESULT status;
PCHANNEL pChannel;
PCONFERENCE pConference;
CC_HCONFERENCE hConference;
PCALL pCall;
unsigned i;
H245_MUX_T H245MuxTable;
CC_ACCEPT_CHANNEL_CALLBACK_PARAMS Params;
ASSERT(GKIExists());
status = LockChannelAndConference(hChannel, &pChannel, &pConference);
if (status != CC_OK)
HResultLeave(status);
status = LockCall(pChannel->hCall, &pCall);
if (status != CC_OK) {
UnlockChannel(pChannel);
UnlockConference(pConference);
HResultLeave(status);
}
if (pChannel->wNumOutstandingRequests != 0) {
PCC_ADDR pRTPAddr = pChannel->pLocalRTPAddr;
PCC_ADDR pRTCPAddr = pChannel->pLocalRTCPAddr;
if ((pChannel->bMultipointChannel) &&
(pConference->tsMultipointController == TS_TRUE)) {
// Supply the RTP and RTCP addresses in the OpenLogicalChannelAck
if (pConference->pSessionTable != NULL) {
for (i = 0; i < pConference->pSessionTable->wLength; ++i) {
if (pConference->pSessionTable->SessionInfoArray[i].bSessionID ==
pChannel->bSessionID) {
pRTPAddr = pConference->pSessionTable->SessionInfoArray[i].pRTPAddr;
pRTCPAddr = pConference->pSessionTable->SessionInfoArray[i].pRTCPAddr;
break;
}
}
}
}
H245MuxTable.Kind = H245_H2250ACK;
H245MuxTable.u.H2250ACK.nonStandardList = NULL;
if (pRTPAddr != NULL) {
if (pRTPAddr->bMulticast)
H245MuxTable.u.H2250ACK.mediaChannel.type = H245_IP_MULTICAST;
else
H245MuxTable.u.H2250ACK.mediaChannel.type = H245_IP_UNICAST;
H245MuxTable.u.H2250ACK.mediaChannel.u.ip.tsapIdentifier =
pRTPAddr->Addr.IP_Binary.wPort;
HostToH245IPNetwork(H245MuxTable.u.H2250ACK.mediaChannel.u.ip.network,
pRTPAddr->Addr.IP_Binary.dwAddr);
H245MuxTable.u.H2250ACK.mediaChannelPresent = TRUE;
} else
H245MuxTable.u.H2250ACK.mediaChannelPresent = FALSE;
if (pRTCPAddr != NULL) {
if (pRTCPAddr->bMulticast)
H245MuxTable.u.H2250ACK.mediaControlChannel.type = H245_IP_MULTICAST;
else
H245MuxTable.u.H2250ACK.mediaControlChannel.type = H245_IP_UNICAST;
H245MuxTable.u.H2250ACK.mediaControlChannel.u.ip.tsapIdentifier =
pRTCPAddr->Addr.IP_Binary.wPort;
HostToH245IPNetwork(H245MuxTable.u.H2250ACK.mediaControlChannel.u.ip.network,
pRTCPAddr->Addr.IP_Binary.dwAddr);
H245MuxTable.u.H2250ACK.mediaControlChannelPresent = TRUE;
} else
H245MuxTable.u.H2250ACK.mediaControlChannelPresent = FALSE;
H245MuxTable.u.H2250ACK.dynamicRTPPayloadTypePresent = FALSE;
H245MuxTable.u.H2250ACK.sessionIDPresent = TRUE;
H245MuxTable.u.H2250ACK.sessionID = pChannel->bSessionID;
status = H245OpenChannelAccept(pCall->H245Instance,
0, // dwTransId
pChannel->wRemoteChannelNumber, // Rx channel
&H245MuxTable,
0, // Tx channel
NULL, // Tx mux
H245_INVALID_PORT_NUMBER,// Port
pChannel->pSeparateStack);
if (status == CC_OK)
pChannel->wNumOutstandingRequests = 0;
else
--(pChannel->wNumOutstandingRequests);
}
pChannel->tsAccepted = TS_TRUE;
Params.hChannel = hChannel;
if (status == CC_OK)
UnlockChannel(pChannel);
else
FreeChannel(pChannel);
UnlockCall(pCall);
hConference = pConference->hConference;
InvokeUserConferenceCallback(pConference,
CC_ACCEPT_CHANNEL_INDICATION,
status,
&Params);
if (ValidateConference(hConference) == CC_OK)
UnlockConference(pConference);
HResultLeave(status);
} // AcceptChannelConfirm(void()
HRESULT AcceptChannelReject (CC_HCHANNEL hChannel, HRESULT Reason)
{
HRESULT status;
PCHANNEL pChannel;
PCONFERENCE pConference;
CC_HCONFERENCE hConference;
CC_ACCEPT_CHANNEL_CALLBACK_PARAMS Params;
ASSERT(GKIExists());
status = LockChannelAndConference(hChannel, &pChannel, &pConference);
if (status == CC_OK) {
Params.hChannel = hChannel;
FreeChannel(pChannel);
hConference = pConference->hConference;
InvokeUserConferenceCallback(pConference,
CC_ACCEPT_CHANNEL_INDICATION,
Reason,
&Params);
if (ValidateConference(hConference) == CC_OK)
UnlockConference(pConference);
}
HResultLeave(status);
} // AcceptChannelReject()
//
// Handle gratuitous messages from Gatekeeper
//
// Note: pCall assumed locked when called!
HRESULT Disengage(void *pCallVoid)
{
CC_HCALL hCall = ((PCALL)pCallVoid)->hCall;
HRESULT status;
UnlockCall((PCALL)pCallVoid);
status = ProcessRemoteHangup(hCall, CC_INVALID_HANDLE, CC_REJECT_GATEKEEPER_TERMINATED);
HResultLeave(status);
} // Disengage()
// Note: pCall assumed locked when called!
HRESULT BandwidthShrunk(void *pCallVoid,
void *pConferenceVoid,
unsigned uBandwidthAllocated,
long lBandwidthChange)
{
PCALL pCall = (PCALL) pCallVoid;
PCONFERENCE pConference = (PCONFERENCE)pConferenceVoid;
CC_BANDWIDTH_CALLBACK_PARAMS Params;
ASSERT(GKIExists());
Params.hCall = pCall->hCall;
Params.dwBandwidthTotal = uBandwidthAllocated;
Params.lBandwidthChange = lBandwidthChange;
InvokeUserConferenceCallback(pConference,
CC_BANDWIDTH_CHANGED_INDICATION,
CC_OK,
&Params);
HResultLeave(CC_OK);
} // BandwidthShrunk()
#else // GATEKEEPER
static char ch; // Kludge around warning C4206: nonstandard extension used : translation unit is empty
#endif // GATEKEEPER