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windows-nt/Source/XPSP1/NT/ds/netapi/xactsrv/apisess.c
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2020-09-26 16:20:57 +08:00

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/*++
Copyright (c) 1991 Microsoft Corporation
Module Name:
ApiSess.c
Abstract:
This module contains individual API handlers for the NetSession APIs.
SUPPORTED : NetSessionDel, NetSessionEnum, NetSessionGetInfo.
Author:
Shanku Niyogi (w-shanku) 5-Feb-1991
Revision History:
--*/
#include "XactSrvP.h"
//
// Declaration of descriptor strings.
//
STATIC const LPDESC Desc16_session_info_0 = REM16_session_info_0;
STATIC const LPDESC Desc32_session_info_0 = REM32_session_info_0;
STATIC const LPDESC Desc16_session_info_1 = REM16_session_info_1;
STATIC const LPDESC Desc32_session_info_1 = REM32_session_info_1;
STATIC const LPDESC Desc16_session_info_2 = REM16_session_info_2;
STATIC const LPDESC Desc32_session_info_2 = REM32_session_info_2;
STATIC const LPDESC Desc16_session_info_10 = REM16_session_info_10;
STATIC const LPDESC Desc32_session_info_10 = REM32_session_info_10;
NTSTATUS
XsNetSessionDel (
API_HANDLER_PARAMETERS
)
/*++
Routine Description:
This routine handles a call to NetSessionDel.
Arguments:
API_HANDLER_PARAMETERS - information about the API call. See
XsTypes.h for details.
Return Value:
NTSTATUS - STATUS_SUCCESS or reason for failure.
--*/
{
NET_API_STATUS status;
PXS_NET_SESSION_DEL parameters = Parameters;
LPTSTR nativeClientName = NULL; // Native parameters
API_HANDLER_PARAMETERS_REFERENCE; // Avoid warnings
IF_DEBUG(SESSION) {
NetpKdPrint(( "XsNetSessionDel: header at %lx, params at %lx, "
"device %s\n",
Header, parameters,
SmbGetUlong( &parameters->ClientName )));
}
try {
//
// Translate parameters, check for errors.
//
XsConvertTextParameter(
nativeClientName,
(LPSTR)XsSmbGetPointer( &parameters->ClientName )
);
//
// Make the local call.
//
status = NetSessionDel(
NULL,
nativeClientName,
NULL
);
if ( !XsApiSuccess( status )) {
IF_DEBUG(ERRORS) {
NetpKdPrint(( "XsNetSessionDel: NetSessionDel failed: %X\n",
status ));
}
}
cleanup:
;
} except( EXCEPTION_EXECUTE_HANDLER ) {
status = (WORD)RtlNtStatusToDosError( GetExceptionCode() );
}
NetpMemoryFree( nativeClientName );
//
// Nothing to return.
//
Header->Status = (WORD)status;
return STATUS_SUCCESS;
} // NetSessionDel
NTSTATUS
XsNetSessionEnum (
API_HANDLER_PARAMETERS
)
/*++
Routine Description:
This routine handles a call to NetSessionEnum.
Arguments:
API_HANDLER_PARAMETERS - information about the API call. See
XsTypes.h for details.
Return Value:
NTSTATUS - STATUS_SUCCESS or reason for failure.
--*/
{
NET_API_STATUS status;
PXS_NET_SESSION_ENUM parameters = Parameters;
LPVOID outBuffer = NULL; // Native parameters
DWORD entriesRead;
DWORD totalEntries;
DWORD entriesFilled = 0; // Conversion variables
DWORD bytesRequired = 0;
LPDESC nativeStructureDesc;
PSESSION_16_INFO_1 struct1;
PSESSION_16_INFO_2 struct2;
DWORD i;
API_HANDLER_PARAMETERS_REFERENCE; // Avoid warnings
IF_DEBUG(SESSION) {
NetpKdPrint(( "XsNetSessionEnum: header at %lx, params at %lx, "
"level %ld, buf size %ld\n",
Header, parameters, SmbGetUshort( &parameters->Level ),
SmbGetUshort( &parameters->BufLen )));
}
try {
//
// Check for errors.
//
if ( XsWordParamOutOfRange( parameters->Level, 0, 2 ) &&
( SmbGetUshort( &parameters->Level ) != 10 )) {
Header->Status = ERROR_INVALID_LEVEL;
goto cleanup;
}
//
// Make the local call.
//
status = NetSessionEnum(
NULL,
NULL,
NULL,
(DWORD)SmbGetUshort( &parameters->Level ),
(LPBYTE *)&outBuffer,
XsNativeBufferSize( SmbGetUshort( &parameters->BufLen )),
&entriesRead,
&totalEntries,
NULL
);
if ( !XsApiSuccess( status )) {
IF_DEBUG(API_ERRORS) {
NetpKdPrint(( "XsNetSessionEnum: NetSessionEnum failed: "
"%X\n", status ));
}
Header->Status = (WORD)status;
goto cleanup;
}
IF_DEBUG(SESSION) {
NetpKdPrint(( "XsNetSessionEnum: received %ld entries at %lx\n",
entriesRead, outBuffer ));
}
//
// Use the requested level to determine the format of the
// data structure.
//
switch ( SmbGetUshort( &parameters->Level ) ) {
case 0:
nativeStructureDesc = Desc32_session_info_0;
StructureDesc = Desc16_session_info_0;
break;
case 1:
nativeStructureDesc = Desc32_session_info_1;
StructureDesc = Desc16_session_info_1;
break;
case 2:
nativeStructureDesc = Desc32_session_info_2;
StructureDesc = Desc16_session_info_2;
break;
case 10:
nativeStructureDesc = Desc32_session_info_10;
StructureDesc = Desc16_session_info_10;
break;
}
//
// Do the actual conversion from the 32-bit structures to 16-bit
// structures.
//
XsFillEnumBuffer(
outBuffer,
entriesRead,
nativeStructureDesc,
(LPVOID)XsSmbGetPointer( &parameters->Buffer ),
(LPVOID)XsSmbGetPointer( &parameters->Buffer ),
SmbGetUshort( &parameters->BufLen ),
StructureDesc,
NULL, // verify function
&bytesRequired,
&entriesFilled,
NULL
);
IF_DEBUG(SESSION) {
NetpKdPrint(( "32-bit data at %lx, 16-bit data at %lx, %ld BR,"
" Entries %ld of %ld\n",
outBuffer, SmbGetUlong( &parameters->Buffer ),
bytesRequired, entriesFilled, totalEntries ));
}
//
// Go through all the structures, and fill in the default data.
//
struct1 = (PSESSION_16_INFO_1)XsSmbGetPointer( &parameters->Buffer );
struct2 = (PSESSION_16_INFO_2)struct1;
switch ( SmbGetUshort( &parameters->Level )) {
case 1:
for ( i = 0; i < entriesFilled; i++, struct1++ ) {
SmbPutUshort( &struct1->sesi1_num_conns, DEF16_ses_num_conns );
SmbPutUshort( &struct1->sesi1_num_users, DEF16_ses_num_users );
}
break;
case 2:
for ( i = 0; i < entriesFilled; i++, struct2++ ) {
SmbPutUshort( &struct2->sesi2_num_conns, DEF16_ses_num_conns );
SmbPutUshort( &struct2->sesi2_num_users, DEF16_ses_num_users );
}
break;
default:
break;
}
//
// If all the entries could not be filled, return ERROR_MORE_DATA,
// and return the buffer as is. Otherwise, the data needs to be
// packed so that we don't send too much useless data.
//
if ( entriesFilled < totalEntries ) {
Header->Status = ERROR_MORE_DATA;
} else {
Header->Converter = XsPackReturnData(
(LPVOID)XsSmbGetPointer( &parameters->Buffer ),
SmbGetUshort( &parameters->BufLen ),
StructureDesc,
entriesFilled
);
}
//
// Set up the response parameters.
//
SmbPutUshort( &parameters->EntriesRead, (WORD)entriesFilled );
SmbPutUshort( &parameters->TotalAvail, (WORD)totalEntries );
cleanup:
;
} except( EXCEPTION_EXECUTE_HANDLER ) {
Header->Status = (WORD)RtlNtStatusToDosError( GetExceptionCode() );
}
NetApiBufferFree( outBuffer );
//
// Determine return buffer size.
//
XsSetDataCount(
&parameters->BufLen,
StructureDesc,
Header->Converter,
entriesFilled,
Header->Status
);
return STATUS_SUCCESS;
} // NetSessionEnum
NTSTATUS
XsNetSessionGetInfo (
API_HANDLER_PARAMETERS
)
/*++
Routine Description:
This routine handles a call to NetSessionGetInfo.
Arguments:
API_HANDLER_PARAMETERS - information about the API call. See
XsTypes.h for details.
Return Value:
NTSTATUS - STATUS_SUCCESS or reason for failure.
--*/
{
NET_API_STATUS status;
PXS_NET_SESSION_GET_INFO parameters = Parameters;
LPTSTR nativeClientName = NULL; // Native parameters
LPVOID outBuffer = NULL;
DWORD entriesRead;
DWORD totalEntries;
LPBYTE stringLocation = NULL; // Conversion variables
DWORD bytesRequired = 0;
LPDESC nativeStructureDesc;
PSESSION_16_INFO_2 struct2;
API_HANDLER_PARAMETERS_REFERENCE; // Avoid warnings
IF_DEBUG(SESSION) {
NetpKdPrint(( "XsNetSessionGetInfo: header at %lx, "
"params at %lx, level %ld\n",
Header, parameters, SmbGetUshort( &parameters->Level ) ));
}
try {
//
// Translate parameters, check for errors.
//
if ( XsWordParamOutOfRange( parameters->Level, 0, 2 ) &&
( SmbGetUshort( &parameters->Level ) != 10 )) {
Header->Status = ERROR_INVALID_LEVEL;
goto cleanup;
}
XsConvertTextParameter(
nativeClientName,
(LPSTR)XsSmbGetPointer( &parameters->ClientName )
);
//
// If this is a null client name, send the appropriate response.
//
if ( ( nativeClientName == NULL ) ||
STRLEN( nativeClientName ) == 0 ) {
Header->Status = NERR_ClientNameNotFound;
goto cleanup;
}
//
// Make the local call.
//
status = NetSessionEnum(
NULL,
nativeClientName,
NULL,
(DWORD)SmbGetUshort( &parameters->Level ),
(LPBYTE *)&outBuffer,
XsNativeBufferSize( SmbGetUshort( &parameters->BufLen )),
&entriesRead,
&totalEntries,
NULL
);
if ( !XsApiSuccess( status )) {
IF_DEBUG(API_ERRORS) {
NetpKdPrint(( "XsNetSessionGetInfo: NetSessionEnum failed: "
"%X\n", status ));
}
Header->Status = (WORD)status;
goto cleanup;
}
IF_DEBUG(SESSION) {
NetpKdPrint(( "XsNetSessionGetInfo: Received %ld entries\n",
entriesRead ));
}
//
// Use the requested level to determine the format of the 32-bit
// structure we got back from NetSessionGetInfo. The format of the
// 16-bit structure is stored in the transaction block, and we
// got a pointer to it as a parameter.
//
switch ( SmbGetUshort( &parameters->Level ) ) {
case 0:
nativeStructureDesc = Desc32_session_info_0;
StructureDesc = Desc16_session_info_0;
break;
case 1:
nativeStructureDesc = Desc32_session_info_1;
StructureDesc = Desc16_session_info_1;
break;
case 2:
nativeStructureDesc = Desc32_session_info_2;
StructureDesc = Desc16_session_info_2;
break;
case 10:
nativeStructureDesc = Desc32_session_info_10;
StructureDesc = Desc16_session_info_10;
break;
}
//
// Convert the structure returned by the 32-bit call to a 16-bit
// structure. The last possible location for variable data is
// calculated from buffer location and length.
//
stringLocation = (LPBYTE)( XsSmbGetPointer( &parameters->Buffer )
+ SmbGetUshort( &parameters->BufLen ) );
status = RapConvertSingleEntry(
outBuffer,
nativeStructureDesc,
FALSE,
(LPBYTE)XsSmbGetPointer( &parameters->Buffer ),
(LPBYTE)XsSmbGetPointer( &parameters->Buffer ),
StructureDesc,
TRUE,
&stringLocation,
&bytesRequired,
Response,
NativeToRap
);
if ( status != NERR_Success ) {
IF_DEBUG(ERRORS) {
NetpKdPrint(( "NetSessionGetInfo: RapConvertSingleEntry failed: "
"%X\n", status ));
}
Header->Status = NERR_InternalError;
goto cleanup;
}
IF_DEBUG(SESSION) {
NetpKdPrint(( "32-bit data at %lx, 16-bit data at %lx, %ld BR\n",
outBuffer, SmbGetUlong( &parameters->Buffer ),
bytesRequired ));
}
//
// Determine return code based on the size of the buffer.
//
if ( !XsCheckBufferSize(
SmbGetUshort( &parameters->BufLen ),
StructureDesc,
FALSE // not in native format
)) {
IF_DEBUG(ERRORS) {
NetpKdPrint(( "XsNetSessionGetInfo: Buffer too small.\n" ));
}
Header->Status = NERR_BufTooSmall;
} else {
//
// Fill in default data in the structure.
//
if (( SmbGetUshort( &parameters->Level ) == 1 ) ||
SmbGetUshort( &parameters->Level ) == 2 ) {
struct2 = (PSESSION_16_INFO_2)XsSmbGetPointer( &parameters->Buffer );
SmbPutUshort( &struct2->sesi2_num_conns, DEF16_ses_num_conns );
SmbPutUshort( &struct2->sesi2_num_users, (WORD)entriesRead );
}
if ( bytesRequired > (DWORD)SmbGetUshort( &parameters-> BufLen )) {
IF_DEBUG(ERRORS) {
NetpKdPrint(( "NetSessionGetInfo: More data available.\n" ));
}
Header->Status = ERROR_MORE_DATA;
} else {
//
// Pack the response data.
//
Header->Converter = XsPackReturnData(
(LPVOID)XsSmbGetPointer( &parameters->Buffer ),
SmbGetUshort( &parameters->BufLen ),
StructureDesc,
1
);
}
}
//
// Set up the response parameters.
//
SmbPutUshort( &parameters->TotalAvail, (WORD)bytesRequired );
cleanup:
;
} except( EXCEPTION_EXECUTE_HANDLER ) {
Header->Status = (WORD)RtlNtStatusToDosError( GetExceptionCode() );
}
NetApiBufferFree( outBuffer );
NetpMemoryFree( nativeClientName );
//
// Determine return buffer size.
//
XsSetDataCount(
&parameters->BufLen,
StructureDesc,
Header->Converter,
1,
Header->Status
);
return STATUS_SUCCESS;
} // NetSessionGetInfo
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