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

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/*++
Copyright (c) 1991 Microsoft Corporation
Module Name:
ApiShare.c
Abstract:
This module contains individual API handlers for the NetShare APIs.
SUPPORTED : NetShareAdd, NetShareCheck, NetShareDel, NetShareEnum,
NetShareGetInfo, NetShareSetInfo.
Author:
David Treadwell (davidtr) 07-Jan-1991
Shanku Niyogi (w-shanku)
Revision History:
--*/
#include "XactSrvP.h"
//
// Declaration of descriptor strings.
//
STATIC const LPDESC Desc16_share_info_0 = REM16_share_info_0;
STATIC const LPDESC Desc32_share_info_0 = REM32_share_info_0;
STATIC const LPDESC Desc16_share_info_1 = REM16_share_info_1;
STATIC const LPDESC Desc32_share_info_1 = REM32_share_info_1;
STATIC const LPDESC Desc16_share_info_1_setinfo = REM16_share_info_1_setinfo;
STATIC const LPDESC Desc32_share_info_1_setinfo = REM32_share_info_1_setinfo;
STATIC const LPDESC Desc16_share_info_2 = REM16_share_info_2;
STATIC const LPDESC Desc32_share_info_2 = REM32_share_info_2;
STATIC const LPDESC Desc16_share_info_2_setinfo = REM16_share_info_2_setinfo;
STATIC const LPDESC Desc32_share_info_2_setinfo = REM32_share_info_2_setinfo;
NTSTATUS
XsNetShareAdd (
API_HANDLER_PARAMETERS
)
/*++
Routine Description:
This routine handles a call to NetShareAdd.
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_SHARE_ADD parameters = Parameters;
LPVOID buffer = NULL; // Native parameters
LPBYTE stringLocation = NULL; // Conversion variables
DWORD bytesRequired = 0;
DWORD bufferSize;
API_HANDLER_PARAMETERS_REFERENCE; // Avoid warnings
IF_DEBUG(SHARE) {
NetpKdPrint(( "XsNetShareAdd: header at %lx, params at %lx, "
"level %ld\n",
Header,
parameters,
SmbGetUshort( &parameters->Level ) ));
}
try {
//
// Check for errors.
//
if ( SmbGetUshort( &parameters->Level ) != 2 ) {
Header->Status = ERROR_INVALID_LEVEL;
goto cleanup;
}
StructureDesc = Desc16_share_info_2;
//
// Figure out if there is enough room in the buffer for all the
// data required. If not, return NERR_BufTooSmall.
//
if ( !XsCheckBufferSize(
SmbGetUshort( &parameters->BufLen ),
StructureDesc,
FALSE // not in native format
)) {
IF_DEBUG(ERRORS) {
NetpKdPrint(( "XsNetShareAdd: Buffer too small.\n" ));
}
Header->Status = NERR_BufTooSmall;
goto cleanup;
}
//
// Find out how big a buffer we need to allocate to hold the native
// 32-bit version of the input data structure.
//
bufferSize = XsBytesForConvertedStructure(
(LPBYTE)XsSmbGetPointer( &parameters->Buffer ),
StructureDesc,
Desc32_share_info_2,
RapToNative,
TRUE
);
//
// Allocate enough memory to hold the converted native buffer.
//
buffer = NetpMemoryAllocate( bufferSize );
if ( buffer == NULL ) {
IF_DEBUG(ERRORS) {
NetpKdPrint(( "XsNetShareAdd: failed to create buffer" ));
}
Header->Status = NERR_NoRoom;
goto cleanup;
}
IF_DEBUG(SHARE) {
NetpKdPrint(( "XsNetShareAdd: buffer of %ld bytes at %lx\n",
bufferSize, buffer ));
}
//
// Convert the buffer from 16-bit to 32-bit.
//
stringLocation = (LPBYTE)buffer + bufferSize;
bytesRequired = 0;
status = RapConvertSingleEntry(
(LPBYTE)XsSmbGetPointer( &parameters->Buffer ),
StructureDesc,
TRUE,
buffer,
buffer,
Desc32_share_info_2,
FALSE,
&stringLocation,
&bytesRequired,
Response,
RapToNative
);
if ( status != NERR_Success ) {
IF_DEBUG(ERRORS) {
NetpKdPrint(( "XsNetShareAdd: RapConvertSingleEntry failed: "
"%X\n", status ));
}
Header->Status = NERR_InternalError;
goto cleanup;
}
//
// Make the local call.
//
status = NetShareAdd(
NULL,
(DWORD)SmbGetUshort( &parameters->Level ),
buffer,
NULL
);
if ( !XsApiSuccess( status )) {
IF_DEBUG(ERRORS) {
NetpKdPrint(( "XsNetShareAdd: NetShareAdd failed: %X\n", status ));
}
if ( status == ERROR_DIRECTORY ) {
Header->Status = NERR_UnknownDevDir;
} else {
Header->Status = (WORD)status;
}
goto cleanup;
}
//
// There is no real return information for this API.
//
cleanup:
;
} except( EXCEPTION_EXECUTE_HANDLER ) {
Header->Status = (WORD)RtlNtStatusToDosError( GetExceptionCode() );
}
NetpMemoryFree( buffer );
return STATUS_SUCCESS;
} // XsNetShareAdd
NTSTATUS
XsNetShareCheck (
API_HANDLER_PARAMETERS
)
/*++
Routine Description:
This routine handles a call to NetShareCheck.
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_SHARE_CHECK parameters = Parameters;
LPTSTR nativeDeviceName = NULL; // Native parameters
DWORD shareType;
API_HANDLER_PARAMETERS_REFERENCE; // Avoid warnings
try {
//
// Translate parameters, check for errors.
//
XsConvertTextParameter(
nativeDeviceName,
(LPSTR)XsSmbGetPointer( &parameters->DeviceName )
);
//
// Do the local call.
//
status = NetShareCheck(
NULL,
nativeDeviceName,
&shareType
);
if ( !XsApiSuccess( status )) {
IF_DEBUG(ERRORS) {
NetpKdPrint(( "XsNetShareCheck: NetShareCheck failed: "
"%X\n", status ));
}
}
//
// Put type into return field.
//
SmbPutUshort( &parameters->Type, (WORD)shareType );
Header->Status = (WORD)status;
cleanup:
;
} except( EXCEPTION_EXECUTE_HANDLER ) {
Header->Status = (WORD)RtlNtStatusToDosError( GetExceptionCode() );
}
NetpMemoryFree( nativeDeviceName );
return STATUS_SUCCESS;
} // XsNetShareCheck
NTSTATUS
XsNetShareDel (
API_HANDLER_PARAMETERS
)
/*++
Routine Description:
This routine handles a call to NetShareDel.
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_SHARE_DEL parameters = Parameters;
LPTSTR nativeNetName = NULL; // Native parameters
API_HANDLER_PARAMETERS_REFERENCE; // Avoid warnings
IF_DEBUG(SHARE) {
NetpKdPrint(( "XsNetShareDel: header at %lx, params at %lx, name %s\n",
Header, parameters, SmbGetUlong( &parameters->NetName )));
}
try {
//
// Translate parameters, check for errors.
//
XsConvertTextParameter(
nativeNetName,
(LPSTR)XsSmbGetPointer( &parameters->NetName )
);
//
// Make the local call.
//
status = NetShareDel(
NULL,
nativeNetName,
(DWORD)SmbGetUshort( &parameters->Reserved )
);
if ( !XsApiSuccess( status )) {
IF_DEBUG(ERRORS) {
NetpKdPrint(( "XsNetShareDel: NetShareDel failed: %X\n", status ));
}
}
//
// Nothing to return.
//
Header->Status = (WORD)status;
cleanup:
;
} except( EXCEPTION_EXECUTE_HANDLER ) {
Header->Status = (WORD)RtlNtStatusToDosError( GetExceptionCode() );
}
NetpMemoryFree( nativeNetName );
return STATUS_SUCCESS;
} // XsNetShareDel
NTSTATUS
XsNetShareEnum (
API_HANDLER_PARAMETERS
)
/*++
Routine Description:
This routine handles a call to NetShareEnum.
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_SHARE_ENUM parameters = Parameters;
LPVOID outBuffer= NULL; // Native parameters
DWORD entriesRead = 0;
DWORD totalEntries;
DWORD entriesFilled = 0; // Conversion variables
DWORD bytesRequired = 0;
DWORD invalidEntries = 0;
LPDESC nativeStructureDesc;
API_HANDLER_PARAMETERS_REFERENCE; // Avoid warnings
IF_DEBUG(SHARE) {
NetpKdPrint(( "XsNetShareEnum: 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 )) {
Header->Status = ERROR_INVALID_LEVEL;
goto cleanup;
}
//
// Make the local call.
//
status = NetShareEnum(
NULL,
(DWORD)SmbGetUshort( &parameters->Level ),
(LPBYTE *)&outBuffer,
XsNativeBufferSize( SmbGetUshort( &parameters->BufLen )),
&entriesRead,
&totalEntries,
NULL
);
if ( !XsApiSuccess( status )) {
IF_DEBUG(API_ERRORS) {
NetpKdPrint(( "XsNetShareEnum: NetShareEnum failed: "
"%X\n", status ));
}
Header->Status = (WORD)status;
goto cleanup;
}
IF_DEBUG(SHARE) {
NetpKdPrint(( "XsNetShareEnum: 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_share_info_0;
StructureDesc = Desc16_share_info_0;
break;
case 1:
nativeStructureDesc = Desc32_share_info_1;
StructureDesc = Desc16_share_info_1;
break;
case 2:
nativeStructureDesc = Desc32_share_info_2;
StructureDesc = Desc16_share_info_2;
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,
&invalidEntries
);
IF_DEBUG(SHARE) {
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 ));
}
//
// 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 + invalidEntries < 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;
} // XsNetShareEnum
NTSTATUS
XsNetShareGetInfo (
API_HANDLER_PARAMETERS
)
/*++
Routine Description:
This routine handles a call to NetShareGetInfo.
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_SHARE_GET_INFO parameters = Parameters;
LPTSTR nativeNetName = NULL; // Native parameters
LPVOID outBuffer = NULL;
LPBYTE stringLocation = NULL; // Conversion variables
DWORD bytesRequired = 0;
LPDESC nativeStructureDesc;
API_HANDLER_PARAMETERS_REFERENCE; // Avoid warnings
IF_DEBUG(SHARE) {
NetpKdPrint(( "XsNetShareGetInfo: 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 )) {
Header->Status = ERROR_INVALID_LEVEL;
goto cleanup;
}
XsConvertTextParameter(
nativeNetName,
(LPSTR)XsSmbGetPointer( &parameters->NetName )
);
//
// Make the local call.
//
status = NetShareGetInfo(
NULL,
nativeNetName,
(DWORD)SmbGetUshort( &parameters->Level ),
(LPBYTE *)&outBuffer
);
if ( !XsApiSuccess( status )) {
IF_DEBUG(API_ERRORS) {
NetpKdPrint(( "XsNetShareGetInfo: NetShareGetInfo failed: "
"%X\n", status ));
}
Header->Status = (WORD)status;
goto cleanup;
}
//
// Use the requested level to determine the format of the
// data structure.
//
switch ( SmbGetUshort( &parameters->Level ) ) {
case 0:
nativeStructureDesc = Desc32_share_info_0;
StructureDesc = Desc16_share_info_0;
break;
case 1:
nativeStructureDesc = Desc32_share_info_1;
StructureDesc = Desc16_share_info_1;
break;
case 2:
nativeStructureDesc = Desc32_share_info_2;
StructureDesc = Desc16_share_info_2;
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(( "XsNetShareGetInfo: RapConvertSingleEntry failed: "
"%X\n", status ));
}
Header->Status = NERR_InternalError;
goto cleanup;
}
IF_DEBUG(SHARE) {
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(( "XsNetShareGetInfo: Buffer too small.\n" ));
}
Header->Status = NERR_BufTooSmall;
} else if ( bytesRequired > (DWORD)SmbGetUshort( &parameters-> BufLen )) {
IF_DEBUG(ERRORS) {
NetpKdPrint(( "XsNetShareGetInfo: 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( nativeNetName );
//
// Determine return buffer size.
//
XsSetDataCount(
&parameters->BufLen,
StructureDesc,
Header->Converter,
1,
Header->Status
);
return STATUS_SUCCESS;
} // XsNetShareGetInfo
NTSTATUS
XsNetShareSetInfo (
API_HANDLER_PARAMETERS
)
/*++
Routine Description:
This routine handles a call to NetShareSetInfo.
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_SHARE_SET_INFO parameters = Parameters;
LPTSTR nativeNetName = NULL; // Native parameters
LPVOID buffer = NULL;
DWORD level;
LPDESC setInfoDesc; // Conversion variables
LPDESC nativeSetInfoDesc;
LPDESC nativeStructureDesc;
API_HANDLER_PARAMETERS_REFERENCE; // Avoid warnings
try {
//
// Translate parameters, check for errors.
//
XsConvertTextParameter(
nativeNetName,
(LPSTR)XsSmbGetPointer( &parameters->NetName )
);
//
// Determine descriptor strings based on level.
//
switch ( SmbGetUshort( &parameters->Level )) {
case 1:
StructureDesc = Desc16_share_info_1;
nativeStructureDesc = Desc32_share_info_1;
setInfoDesc = Desc16_share_info_1_setinfo;
nativeSetInfoDesc = Desc32_share_info_1_setinfo;
break;
case 2:
StructureDesc = Desc16_share_info_2;
nativeStructureDesc = Desc32_share_info_2;
setInfoDesc = Desc16_share_info_2_setinfo;
nativeSetInfoDesc = Desc32_share_info_2_setinfo;
break;
default:
Header->Status = ERROR_INVALID_LEVEL;
goto cleanup;
}
status = XsConvertSetInfoBuffer(
(LPBYTE)XsSmbGetPointer( &parameters->Buffer ),
SmbGetUshort( &parameters->BufLen ),
SmbGetUshort( &parameters->ParmNum ),
FALSE,
TRUE,
StructureDesc,
nativeStructureDesc,
setInfoDesc,
nativeSetInfoDesc,
(LPBYTE *)&buffer,
NULL
);
if ( status != NERR_Success ) {
IF_DEBUG(ERRORS) {
NetpKdPrint(( "XsNetShareSetInfo: Problem with conversion: %X\n",
status ));
}
Header->Status = (WORD)status;
goto cleanup;
}
//
// Do the actual local call.
//
level = SmbGetUshort( &parameters->ParmNum );
if ( level != 0 ) {
level = level + PARMNUM_BASE_INFOLEVEL;
} else {
level = SmbGetUshort( &parameters->Level );
}
status = NetShareSetInfo(
NULL,
nativeNetName,
level,
(LPBYTE)buffer,
NULL
);
if ( !XsApiSuccess( status )) {
IF_DEBUG(ERRORS) {
NetpKdPrint(( "XsNetShareSetInfo: NetShareSetInfo failed: %X\n",
status ));
}
Header->Status = (WORD)status;
goto cleanup;
}
//
// No return information for this API.
//
cleanup:
;
} except( EXCEPTION_EXECUTE_HANDLER ) {
Header->Status = (WORD)RtlNtStatusToDosError( GetExceptionCode() );
}
//
// If there is a native 32-bit buffer, free it.
//
NetpMemoryFree( buffer );
NetpMemoryFree( nativeNetName );
return STATUS_SUCCESS;
} // XsNetShareSetInfo
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