Leaked source code of windows server 2003
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/*++
Copyright (C) 1994-98 Microsft Corporation. All rights reserved.
Module Name:
diag.c
Abstract:
This file contains helper routines to get the callerid/calledid
and connect response.
Author:
Rao salapaka (raos) 23-Feb-1998
Revision History:
--*/
#include <nt.h>
#include <ntrtl.h>
#include <nturtl.h>
#include <windows.h>
#include <tapi.h>
#include <rasman.h>
#include <raserror.h>
#include <mprlog.h>
#include <rtutils.h>
#include <media.h>
#include <device.h>
#include <rasmxs.h>
#include <isdn.h>
#include <stdlib.h>
#include <malloc.h>
#include <string.h>
#include "rastapi.h"
#include "reghelp.h"
#include <unimodem.h>
/*++
Routine Description:
Extract CallerID and CalledID information if
available.
Arguments:
port - The tapi port on which the call was made
/ on which the call came in
pLineCallInfo - the LINECALLINFO associated with
this call
pdwRequiredSize - pointer to buffer to receive the
size of buffer required to hold
the callerid and called id info.
pConnectInfo - pointer to the RASTAPI_CONNECT_INFO struct
where the information about the
callerid and called id will be filledin.
If this is not NULL then it is assumed
that the buffer is big enough to store
the callerid and called id iformation.
Return Value:
ERROR_SUCCESS if successful
--*/
DWORD
DwGetIDInformation(
TapiPortControlBlock *port,
LINECALLINFO *pLineCallInfo,
DWORD *pdwRequiredSize,
RASTAPI_CONNECT_INFO *pConnectInfo
)
{
DWORD dwRequiredSize = 0;
DWORD dwErr = ERROR_SUCCESS;
RasTapiTrace("DwGetIDInformation");
#if DBG
RasTapiTrace ("RasTapiCallback: connected on %s",
port->TPCB_Name );
RasTapiTrace("RasTapiCallback: CallerIDFlags=0x%x",
pLineCallInfo->dwCallerIDFlags);
RasTapiTrace("RasTapiCallback: CalledIDFlags=0x%x",
pLineCallInfo->dwCalledIDFlags);
RasTapiTrace("RasTapiCallback: dwNeededSize=%d",
pLineCallInfo->dwNeededSize);
RasTapiTrace("RasTapiCallback: dwUsedSize=%d",
pLineCallInfo->dwUsedSize);
RasTapiTrace("RasTapiCallback: dwCallerIDOffset=%d",
pLineCallInfo->dwCallerIDOffset);
RasTapiTrace("RasTapiCallback: dwCalledIdOffset=%d",
pLineCallInfo->dwCalledIDOffset);
RasTapiTrace("RasTapiCallback: dwCallerIdSize=%d",
pLineCallInfo->dwCallerIDSize);
RasTapiTrace("RasTapiCallback: dwCalledIdSize=%d",
pLineCallInfo->dwCalledIDSize);
RasTapiTrace("RasTapiCallback: dwCallerIdNameSize=%d",
pLineCallInfo->dwCallerIDNameSize);
RasTapiTrace("RasTapiCallback: dwCallerIdNameOffset=%d",
pLineCallInfo->dwCallerIDNameOffset);
#endif
//
// Find the size of the buffer to allocate
//
if(pLineCallInfo->dwCallerIDFlags & LINECALLPARTYID_ADDRESS)
{
//
// Add one byte to allocate for NULL char
//
dwRequiredSize += RASMAN_ALIGN8(pLineCallInfo->dwCallerIDSize + 1);
}
if(pLineCallInfo->dwCalledIDFlags & LINECALLPARTYID_ADDRESS)
{
//
// Add one byte to allocate for NULL char
//
dwRequiredSize += RASMAN_ALIGN8(pLineCallInfo->dwCalledIDSize + 1);
}
if( (NULL == pConnectInfo)
|| (0 == dwRequiredSize))
{
goto done;
}
//
// If pConnectInfo is != NULL it is assumed
// that the buffer is large enough to put
// the CALLER/CALLED ID information in it.
//
if( ( pLineCallInfo->dwCallerIDFlags
& LINECALLPARTYID_ADDRESS )
&& pLineCallInfo->dwCallerIDSize)
{
//
// Copy the caller id information. Note that abdata
// is already aligned at 8byte boundary
//
pConnectInfo->dwCallerIdSize =
pLineCallInfo->dwCallerIDSize;
pConnectInfo->dwCallerIdOffset =
FIELD_OFFSET(RASTAPI_CONNECT_INFO, abdata);
ZeroMemory(
pConnectInfo->abdata,
pLineCallInfo->dwCallerIDSize + 1);
memcpy( pConnectInfo->abdata,
(PBYTE) ((PBYTE) pLineCallInfo
+ pLineCallInfo->dwCallerIDOffset),
pLineCallInfo->dwCallerIDSize);
RasTapiTrace("GetIDInformation: CallerID=%s",
(CHAR *) pConnectInfo->abdata);
//
// for the NULL char
//
pConnectInfo->dwCallerIdSize += 1;
}
else
{
RasTapiTrace("RasTapiCallback: caller id "
"info. not avail");
}
if( ( pLineCallInfo->dwCalledIDFlags
& LINECALLPARTYID_ADDRESS)
&& pLineCallInfo->dwCalledIDSize)
{
//
// Copy the called id information
//
pConnectInfo->dwCalledIdSize =
pLineCallInfo->dwCalledIDSize;
pConnectInfo->dwCalledIdOffset =
FIELD_OFFSET(RASTAPI_CONNECT_INFO, abdata)
+ RASMAN_ALIGN8(pConnectInfo->dwCallerIdSize);
ZeroMemory((PBYTE)
((PBYTE) pConnectInfo
+ pConnectInfo->dwCalledIdOffset),
pLineCallInfo->dwCalledIDSize + 1);
memcpy( (PBYTE)
((PBYTE) pConnectInfo
+ pConnectInfo->dwCalledIdOffset),
(PBYTE) ((PBYTE) pLineCallInfo
+ pLineCallInfo->dwCalledIDOffset),
pLineCallInfo->dwCalledIDSize);
//
// For the calledID
//
pConnectInfo->dwCalledIdSize += 1;
}
else
{
RasTapiTrace("RasTapiCallback: called id "
"info. not avail");
}
done:
if(pdwRequiredSize)
{
*pdwRequiredSize = dwRequiredSize;
}
RasTapiTrace("DwGetIDInformation. %d", dwErr);
return dwErr;
}
/*++
Routine Description:
Extract the connect responses from lpLineDiagnostics(see
MODEM_KEYTYPE_AT_COMMAND_RESPONSE,MODEMDIAGKEY_ATRESP_CONNECT)
and copy them in lpBuffer
Arguments:
lpLineDiagnostics - diagnostic structure
lpBuffer - destination buffer (can be NULL), upon
return contains null terminated ASCII
strings
dwBufferSize - size in bytes of the buffer pointed
by lpBuffer
lpdwNeededSize - pointer (can be NULL) to a dword to
receive the needed size
Return Value:
Returns the number of bytes copied into lpBuffer
--*/
DWORD
DwGetConnectResponses(
LINEDIAGNOSTICS *lpLineDiagnostics,
LPBYTE lpBuffer,
DWORD dwBufferSize,
LPDWORD lpdwNeededSize
)
{
DWORD dwBytesCopied;
DWORD dwNeededSize;
LINEDIAGNOSTICS *lpstructDiagnostics;
RasTapiTrace("DwGetConnectresponses");
dwBytesCopied = 0;
dwNeededSize = 0;
lpstructDiagnostics = lpLineDiagnostics;
while (NULL != lpstructDiagnostics)
{
LINEDIAGNOSTICS_PARSEREC *lpParsedDiagnostics;
LINEDIAGNOSTICSOBJECTHEADER *lpParsedHeader;
DWORD dwNumItems;
DWORD dwIndex;
//
// check the signature for modem diagnostics
//
lpParsedHeader = PARSEDDIAGNOSTICS_HDR(lpstructDiagnostics);
if ( (lpstructDiagnostics->hdr.dwSig
!= LDSIG_LINEDIAGNOSTICS)
|| (lpstructDiagnostics->dwDomainID
!= DOMAINID_MODEM)
|| !IS_VALID_PARSEDDIAGNOSTICS_HDR(lpParsedHeader))
{
goto NextStructure;
}
//
// get parsed structure info
//
dwNumItems = PARSEDDIAGNOSTICS_NUM_ITEMS(lpParsedHeader);
lpParsedDiagnostics = PARSEDDIAGNOSTICS_DATA(lpstructDiagnostics);
//
// iterate the array of LINEDIAGNOSTICS_PARSERECs
//
for (dwIndex = 0; dwIndex < dwNumItems; dwIndex++)
{
DWORD dwThisLength;
LPSTR lpszThisString;
//
// check is a connect response
//
if ( (lpParsedDiagnostics[dwIndex].dwKeyType !=
MODEM_KEYTYPE_AT_COMMAND_RESPONSE)
|| (lpParsedDiagnostics[dwIndex].dwKey !=
MODEMDIAGKEY_ATRESP_CONNECT)
|| !(lpParsedDiagnostics[dwIndex].dwFlags &
fPARSEKEYVALUE_ASCIIZ_STRING))
{
continue;
}
//
// get the string, dwValue offset from the beginning
// of lpParsedDiagnostics
//
lpszThisString = (LPSTR) ( (LPBYTE) lpParsedHeader +
lpParsedDiagnostics[dwIndex].dwValue);
dwThisLength = strlen(lpszThisString) + 1;
if (dwThisLength == 1)
{
continue;
}
//
// update needed size
//
dwNeededSize += dwThisLength;
//
// copy to buffer, if large enough
//
if ( NULL != lpBuffer
&& dwBytesCopied < dwBufferSize - 1)
{
DWORD dwBytesToCopy;
//
// dwThisLength includes null char, so
// does dwBytesToCopy
//
dwBytesToCopy = min(dwThisLength,
dwBufferSize
- 1
- dwBytesCopied);
if (dwBytesToCopy > 1)
{
memcpy(lpBuffer + dwBytesCopied,
lpszThisString,
dwBytesToCopy - 1);
lpBuffer[dwBytesCopied + dwBytesToCopy - 1] = 0;
dwBytesCopied += dwBytesToCopy;
}
}
}
NextStructure:
if (lpstructDiagnostics->hdr.dwNextObjectOffset != 0)
{
lpstructDiagnostics = (LINEDIAGNOSTICS *)
(((LPBYTE) lpstructDiagnostics) +
lpstructDiagnostics->hdr.dwNextObjectOffset);
}
else
{
lpstructDiagnostics = NULL;
}
}
//
// the final null only if data is not empty
//
if (dwNeededSize > 0)
{
dwNeededSize++;
if ( lpBuffer != NULL
&& dwBytesCopied < dwBufferSize)
{
lpBuffer[dwBytesCopied] = 0;
dwBytesCopied++;
}
}
if (lpdwNeededSize != NULL)
{
*lpdwNeededSize = dwNeededSize;
}
RasTapiTrace("DwGetConnectResponses done");
return dwBytesCopied;
}
/*++
Routine Description:
Extract the connect response information
Arguments:
pLineCallInfo - the LINECALLINFO associated with
this call
hCall - handle to call
pdwRequiredSize - This is in/out parameter. As IN it
specifies the size of pBuffer. As
OUT it contains the size required
to store the connect response.
pBuffer - buffer to receive the connect response. This
can be NULL.
Return Value:
ERROR_SUCCESS if successful
--*/
DWORD
DwGetConnectResponseInformation(
LINECALLINFO *pLineCallInfo,
HCALL hCall,
DWORD *pdwRequiredSize,
BYTE *pBuffer
)
{
LONG lr = ERROR_SUCCESS;
BYTE bvar[100];
LPVARSTRING pvar = (LPVARSTRING) bvar;
LINEDIAGNOSTICS *pLineDiagnostics;
DWORD dwConnectResponseSize = 0;
RasTapiTrace("DwGetConnectResponseInformation");
//
// Get the diagnostics information
//
ZeroMemory (pvar, sizeof(*pvar));
pvar->dwTotalSize = sizeof(bvar);
lr = lineGetID(
pLineCallInfo->hLine,
pLineCallInfo->dwAddressID,
hCall,
LINECALLSELECT_CALL,
pvar,
szUMDEVCLASS_TAPI_LINE_DIAGNOSTICS);
if( (LINEERR_STRUCTURETOOSMALL == lr)
|| pvar->dwNeededSize > sizeof(bvar))
{
DWORD dwNeededSize = pvar->dwNeededSize;
//
// Allocate the required size
//
pvar = LocalAlloc(
LPTR,
dwNeededSize);
if(NULL == pvar)
{
lr = (LONG) GetLastError();
goto done;
}
ZeroMemory (pvar, sizeof(*pvar));
pvar->dwTotalSize = dwNeededSize;
lr = lineGetID(
pLineCallInfo->hLine,
pLineCallInfo->dwAddressID,
hCall,
LINECALLSELECT_CALL,
pvar,
szUMDEVCLASS_TAPI_LINE_DIAGNOSTICS);
if(ERROR_SUCCESS != lr)
{
goto done;
}
}
else if(ERROR_SUCCESS != lr)
{
goto done;
}
pLineDiagnostics = (LINEDIAGNOSTICS *) ((LPBYTE) pvar
+ pvar->dwStringOffset);
(void) DwGetConnectResponses(
pLineDiagnostics,
pBuffer,
*pdwRequiredSize,
&dwConnectResponseSize);
done:
if(bvar != (LPBYTE) pvar)
{
LocalFree(pvar);
}
*pdwRequiredSize = dwConnectResponseSize;
RasTapiTrace("DwGetConnectResponseInformation. 0x%x",
lr);
return (DWORD) lr;
}
/*++
Routine Description:
Extract the connection information. This includes
extracing the caller id / called id information
and the connect response information for modems.
Arguments:
port - pointer to the rastapi port on which the
call came in / was made
hCall - handle to call
pLineCallInfo - pointer to the LINECALLINFO structure
associated with this call.
Return Value:
ERROR_SUCCESS if succcessful
--*/
DWORD
DwGetConnectInfo(
TapiPortControlBlock *port,
HCALL hCall,
LINECALLINFO *pLineCallInfo
)
{
DWORD dwErr = ERROR_SUCCESS;
DWORD dwRequiredSize = 0;
DWORD dwConnectResponseSize = 0;
RASTAPI_CONNECT_INFO *pConnectInfo = NULL;
RasTapiTrace("DwGetConnectInfo");
//
// Get the size required to store the
// caller/called id information
//
dwErr = DwGetIDInformation(port,
pLineCallInfo,
&dwRequiredSize,
NULL);
if(ERROR_SUCCESS != dwErr)
{
goto done;
}
RasTapiTrace("SizeRequired for CallID=%d",
dwRequiredSize);
if(0 == _stricmp(port->TPCB_DeviceType, "modem"))
{
//
// Get the size required to store connect
// response if this is a modem
//
dwErr = DwGetConnectResponseInformation(
pLineCallInfo,
hCall,
&dwConnectResponseSize,
NULL);
if(NO_ERROR != dwErr)
{
goto done;
}
RasTapiTrace("SizeRequired for ConnectResponse=%d",
dwConnectResponseSize);
}
if(0 == (dwRequiredSize + dwConnectResponseSize))
{
//
// None of the information is available.
// bail.
//
RasTapiTrace("CallIDSize=ConnectResponseSize=0");
goto done;
}
dwRequiredSize += ( RASMAN_ALIGN8(dwConnectResponseSize)
+ sizeof(RASTAPI_CONNECT_INFO));
//
// Allocate the buffer
//
pConnectInfo = (RASTAPI_CONNECT_INFO *) LocalAlloc(
LPTR,
dwRequiredSize);
if(NULL == pConnectInfo)
{
dwErr = GetLastError();
goto done;
}
//
// Get the actual information
//
dwErr = DwGetIDInformation(
port,
pLineCallInfo,
NULL,
pConnectInfo);
if(NO_ERROR != dwErr)
{
goto done;
}
//
// Get Connect response if its a modem
//
if(0 == _stricmp(port->TPCB_DeviceType, "modem"))
{
pConnectInfo->dwConnectResponseOffset =
FIELD_OFFSET(RASTAPI_CONNECT_INFO, abdata)
+ RASMAN_ALIGN8(pConnectInfo->dwCallerIdSize)
+ RASMAN_ALIGN8(pConnectInfo->dwCalledIdSize);
pConnectInfo->dwConnectResponseSize =
dwConnectResponseSize;
dwErr = DwGetConnectResponseInformation(
pLineCallInfo,
hCall,
&dwConnectResponseSize,
(PBYTE) ((PBYTE) pConnectInfo
+ pConnectInfo->dwConnectResponseOffset));
if(ERROR_SUCCESS != dwErr)
{
goto done;
}
}
port->TPCB_pConnectInfo = pConnectInfo;
done:
if( NO_ERROR != dwErr
&& NULL != pConnectInfo)
{
LocalFree(pConnectInfo);
}
RasTapiTrace("DwGetConnectInfo. 0x%x",
dwErr);
return dwErr;
}