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813 lines
22 KiB
813 lines
22 KiB
/*++
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Copyright (c) 1994 Microsoft Corporation
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Module Name:
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display.c
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Abstract:
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NetQueryDisplay Information and NetGetDisplayInformationIndex API functions
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Author:
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Cliff Van Dyke (cliffv) 14-Dec-1994
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Environment:
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User mode only.
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Contains NT-specific code.
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Requires ANSI C extensions: slash-slash comments, long external names.
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Revision History:
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--*/
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#include <nt.h>
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#include <ntrtl.h>
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#include <nturtl.h>
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#undef DOMAIN_ALL_ACCESS // defined in both ntsam.h and ntwinapi.h
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#include <ntsam.h>
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#include <ntlsa.h>
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#include <windef.h>
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#include <winbase.h>
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#include <lmcons.h>
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#include <accessp.h>
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#include <align.h>
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// #include <lmapibuf.h>
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#include <lmaccess.h>
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#include <lmerr.h>
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// #include <limits.h>
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#include <netdebug.h>
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#include <netlib.h>
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#include <netlibnt.h>
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#include <rpcutil.h>
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// #include <rxuser.h>
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// #include <secobj.h>
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// #include <stddef.h>
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#include <uasp.h>
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VOID
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DisplayRelocationRoutine(
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IN DWORD Level,
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IN OUT PBUFFER_DESCRIPTOR BufferDescriptor,
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IN PTRDIFF_T Offset
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)
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/*++
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Routine Description:
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Routine to relocate the pointers from the fixed portion of a NetGroupEnum
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enumeration
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buffer to the string portion of an enumeration buffer. It is called
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as a callback routine from NetpAllocateEnumBuffer when it re-allocates
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such a buffer. NetpAllocateEnumBuffer copied the fixed portion and
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string portion into the new buffer before calling this routine.
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Arguments:
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Level - Level of information in the buffer.
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BufferDescriptor - Description of the new buffer.
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Offset - Offset to add to each pointer in the fixed portion.
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Return Value:
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Returns the error code for the operation.
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--*/
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{
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DWORD EntryCount;
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DWORD EntryNumber;
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DWORD FixedSize;
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IF_DEBUG( UAS_DEBUG_USER ) {
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NetpKdPrint(( "DisplayRelocationRoutine: entering\n" ));
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}
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//
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// Compute the number of fixed size entries
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//
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switch (Level) {
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case 1:
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FixedSize = sizeof(NET_DISPLAY_USER);
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break;
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case 2:
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FixedSize = sizeof(NET_DISPLAY_MACHINE);
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break;
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case 3:
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FixedSize = sizeof(NET_DISPLAY_GROUP);
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break;
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default:
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NetpAssert( FALSE );
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return;
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}
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EntryCount =
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((DWORD)(BufferDescriptor->FixedDataEnd - BufferDescriptor->Buffer)) /
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FixedSize;
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//
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// Loop relocating each field in each fixed size structure
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//
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for ( EntryNumber=0; EntryNumber<EntryCount; EntryNumber++ ) {
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LPBYTE TheStruct = BufferDescriptor->Buffer + FixedSize * EntryNumber;
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switch (Level) {
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case 1:
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RELOCATE_ONE( ((PNET_DISPLAY_USER)TheStruct)->usri1_name, Offset );
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RELOCATE_ONE( ((PNET_DISPLAY_USER)TheStruct)->usri1_comment, Offset );
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RELOCATE_ONE( ((PNET_DISPLAY_USER)TheStruct)->usri1_full_name, Offset );
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break;
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case 2:
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RELOCATE_ONE( ((PNET_DISPLAY_MACHINE)TheStruct)->usri2_name, Offset );
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RELOCATE_ONE( ((PNET_DISPLAY_MACHINE)TheStruct)->usri2_comment, Offset );
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break;
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case 3:
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RELOCATE_ONE( ((PNET_DISPLAY_GROUP)TheStruct)->grpi3_name, Offset );
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RELOCATE_ONE( ((PNET_DISPLAY_GROUP)TheStruct)->grpi3_comment, Offset );
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break;
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default:
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return;
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}
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}
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return;
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} // DisplayRelocationRoutine
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NET_API_STATUS NET_API_FUNCTION
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NetQueryDisplayInformation(
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IN LPCWSTR ServerName OPTIONAL,
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IN DWORD Level,
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IN DWORD Index,
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IN DWORD EntriesRequested,
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IN DWORD PreferredMaximumLength,
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OUT LPDWORD ReturnedEntryCount,
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OUT PVOID *SortedBuffer )
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/*++
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Routine Description:
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This routine provides fast return of information commonly
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needed to be displayed in user interfaces.
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NT User Interface has a requirement for quick enumeration of
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accounts for display in list boxes.
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This API is remotable. The Server can be any NT workstation or server.
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The server cannot be a Lanman or WFW machine.
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NT 3.1 workstations and servers do not support Level 3.
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NT 3.1 workstations and servers do not support an infinitely large
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EntriesRequested.
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Parameters:
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ServerName - A pointer to a string containing the name of the remote
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server on which the function is to execute. A NULL pointer
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or string specifies the local machine.
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Level - Level of information provided. Must be
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1 --> Return all Local and Global (normal) user accounts
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2 --> Return all Workstation and Server (BDC) user accounts
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3 --> Return all Global Groups.
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Index - The index of the first entry to be retrieved. Pass zero on
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the first call. Pass the 'next_index' field of the last entry
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returned on the previous call.
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EntriesRequested - Specifies an upper limit on the number of entries
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to be returned .
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PreferedMaximumLength - A recommended upper limit to the number of
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bytes to be returned. The returned information is allocated by
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this routine.
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ReturnedEntryCount - Number of entries returned by this call. Zero
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indicates there are no entries with an index as large as that
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specified.
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Entries may be returned for a return status of either NERR_Success
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or ERROR_MORE_DATA.
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SortedBuffer - Receives a pointer to a buffer containing a sorted
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list of the requested information. This buffer is allocated
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by this routine and contains the following structure:
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1 --> An array of ReturnedEntryCount elements of type
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NET_DISPLAY_USER. This is followed by the bodies of the
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various strings pointed to from within the
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NET_DISPLAY_USER structures.
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2 --> An array of ReturnedEntryCount elements of type
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NET_DISPLAY_MACHINE. This is followed by the bodies of the
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various strings pointed to from within the
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NET_DISPLAY_MACHINE structures.
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3 --> An array of ReturnedEntryCount elements of type
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NET_DISPLAY_GROUP. This is followed by the bodies of the
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various strings pointed to from within the
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NET_DISPLAY_GROUP structures.
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Return Values:
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NERR_Success - normal, successful completion. There are no more entries
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to be returned.
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ERROR_ACCESS_DENIED - The caller doesn't have access to the requested
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information.
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ERROR_INVALID_LEVEL - The requested level of information
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is not legitimate for this service.
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ERROR_MORE_DATA - More entries are available. That is, the last entry
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returned in SortedBuffer is not the last entry available. More
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entries will be returned by calling again with the Index parameter
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set to the 'next_index' field of the last entry in SortedBuffer.
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--*/
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{
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NET_API_STATUS NetStatus;
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NTSTATUS Status;
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NET_API_STATUS SavedStatus;
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BUFFER_DESCRIPTOR BufferDescriptor;
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DWORD i;
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SAM_HANDLE SamServerHandle = NULL;
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SAM_HANDLE DomainHandle = NULL;
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DOMAIN_DISPLAY_INFORMATION DisplayInformation;
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DWORD FixedSize;
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LPBYTE FixedData;
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DWORD SamTotalBytesAvailable;
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DWORD SamTotalBytesReturned;
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DWORD SamReturnedEntryCount;
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PVOID SamSortedBuffer = NULL;
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DWORD Mode = SAM_SID_COMPATIBILITY_ALL;
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//
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// Validate Level parameter
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//
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*ReturnedEntryCount = 0;
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*SortedBuffer = NULL;
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BufferDescriptor.Buffer = NULL;
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switch (Level) {
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case 1:
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DisplayInformation = DomainDisplayUser;
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FixedSize = sizeof(NET_DISPLAY_USER);
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break;
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case 2:
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DisplayInformation = DomainDisplayMachine;
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FixedSize = sizeof(NET_DISPLAY_MACHINE);
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break;
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case 3:
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DisplayInformation = DomainDisplayGroup;
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FixedSize = sizeof(NET_DISPLAY_GROUP);
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break;
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default:
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return ERROR_INVALID_LEVEL;
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}
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//
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// Connect to the SAM server
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//
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NetStatus = UaspOpenSam( ServerName,
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FALSE, // Don't try null session
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&SamServerHandle );
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if ( NetStatus != NERR_Success ) {
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IF_DEBUG( UAS_DEBUG_USER ) {
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NetpKdPrint(( "NetQueryDisplayInformation: Cannot UaspOpenSam %ld\n", NetStatus ));
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}
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goto Cleanup;
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}
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//
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// Open the Account Domain.
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//
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NetStatus = UaspOpenDomain( SamServerHandle,
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DOMAIN_LIST_ACCOUNTS,
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TRUE, // Account Domain
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&DomainHandle,
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NULL );
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if ( NetStatus != NERR_Success ) {
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goto Cleanup;
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}
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Status = SamGetCompatibilityMode(DomainHandle,
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&Mode);
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if (NT_SUCCESS(Status)) {
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if ( (Mode == SAM_SID_COMPATIBILITY_STRICT)) {
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//
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// All these info levels return RID's
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//
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Status = STATUS_NOT_SUPPORTED;
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}
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}
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if (!NT_SUCCESS(Status)) {
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NetStatus = NetpNtStatusToApiStatus( Status );
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goto Cleanup;
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}
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//
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// Pass the call to SAM
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//
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Status = SamQueryDisplayInformation (
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DomainHandle,
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DisplayInformation,
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Index,
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EntriesRequested,
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PreferredMaximumLength,
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&SamTotalBytesAvailable,
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&SamTotalBytesReturned,
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&SamReturnedEntryCount,
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&SamSortedBuffer );
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if ( !NT_SUCCESS( Status ) ) {
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SamSortedBuffer = NULL;
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IF_DEBUG( UAS_DEBUG_USER ) {
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NetpKdPrint((
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"NetQueryDisplayInformation: SamQueryDisplayInformation returned %lX\n",
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Status ));
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}
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//
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// NT 3.1 systems returned STATUS_NO_MORE_ENTRIES if Index is too large.
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//
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if ( Status == STATUS_NO_MORE_ENTRIES ) {
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NetStatus = NERR_Success;
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goto Cleanup;
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}
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NetStatus = NetpNtStatusToApiStatus( Status );
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goto Cleanup;
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}
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//
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// Remember what status to return on success.
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//
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if ( Status == STATUS_MORE_ENTRIES ) {
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SavedStatus = ERROR_MORE_DATA;
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} else {
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SavedStatus = NERR_Success;
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}
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//
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// Loop for each entry
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//
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for ( i = 0; i < SamReturnedEntryCount; i++ ) {
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PDOMAIN_DISPLAY_USER DomainDisplayUser;
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PDOMAIN_DISPLAY_MACHINE DomainDisplayMachine;
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PDOMAIN_DISPLAY_GROUP DomainDisplayGroup;
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DWORD Size;
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//
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// Determine the total size of the return information.
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//
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Size = FixedSize;
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switch (Level) {
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case 1:
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DomainDisplayUser = &((PDOMAIN_DISPLAY_USER)(SamSortedBuffer))[i];
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Size += DomainDisplayUser->LogonName.Length + sizeof(WCHAR) +
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DomainDisplayUser->AdminComment.Length + sizeof(WCHAR) +
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DomainDisplayUser->FullName.Length + sizeof(WCHAR);
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break;
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case 2:
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DomainDisplayMachine = &((PDOMAIN_DISPLAY_MACHINE)(SamSortedBuffer))[i];
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Size += DomainDisplayMachine->Machine.Length + sizeof(WCHAR) +
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DomainDisplayMachine->Comment.Length + sizeof(WCHAR);
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break;
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case 3:
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DomainDisplayGroup = &((PDOMAIN_DISPLAY_GROUP)(SamSortedBuffer))[i];
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Size += DomainDisplayGroup->Group.Length + sizeof(WCHAR) +
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DomainDisplayGroup->Comment.Length + sizeof(WCHAR);
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break;
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default:
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NetStatus = ERROR_INVALID_LEVEL;
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goto Cleanup;
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}
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//
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// Ensure there is buffer space for this information.
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//
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Size = ROUND_UP_COUNT( Size, ALIGN_WCHAR );
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NetStatus = NetpAllocateEnumBuffer(
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&BufferDescriptor,
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FALSE, // Enumeration
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0xFFFFFFFF, // PrefMaxLen (already limited by SAM)
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Size,
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DisplayRelocationRoutine,
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Level );
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if (NetStatus != NERR_Success) {
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//
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// NetpAllocateEnumBuffer returns ERROR_MORE_DATA if this
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// entry doesn't fit into the buffer.
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//
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if ( NetStatus == ERROR_MORE_DATA ) {
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NetStatus = NERR_InternalError;
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}
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IF_DEBUG( UAS_DEBUG_USER ) {
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NetpKdPrint(( "NetQueryDisplayInformation: NetpAllocateEnumBuffer returns %ld\n",
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NetStatus ));
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}
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goto Cleanup;
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}
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//
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// Define macros to make copying zero terminated strings less repetitive.
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//
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#define COPY_STRING( _dest, _string ) \
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if ( !NetpCopyStringToBuffer( \
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(_string).Buffer, \
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(_string).Length/sizeof(WCHAR), \
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BufferDescriptor.FixedDataEnd, \
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(LPWSTR *)&BufferDescriptor.EndOfVariableData, \
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(_dest) )) { \
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\
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NetStatus = NERR_InternalError; \
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IF_DEBUG( UAS_DEBUG_USER ) { \
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NetpKdPrint(( "NetQueryDisplayInformation: NetpCopyString returns %ld\n", \
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NetStatus )); \
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} \
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goto Cleanup; \
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}
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//
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// Place this entry into the return buffer.
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//
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// Fill in the information. The array of fixed entries are
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// placed at the beginning of the allocated buffer. The strings
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// pointed to by these fixed entries are allocated starting at
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// the end of the allocated buffer.
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//
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FixedData = BufferDescriptor.FixedDataEnd;
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BufferDescriptor.FixedDataEnd += FixedSize;
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switch (Level) {
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case 1: {
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PNET_DISPLAY_USER NetDisplayUser = (PNET_DISPLAY_USER)FixedData;
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COPY_STRING( &NetDisplayUser->usri1_name,
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DomainDisplayUser->LogonName );
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COPY_STRING( &NetDisplayUser->usri1_comment,
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DomainDisplayUser->AdminComment );
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NetDisplayUser->usri1_flags = NetpAccountControlToFlags(
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DomainDisplayUser->AccountControl,
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NULL );
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COPY_STRING( &NetDisplayUser->usri1_full_name,
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DomainDisplayUser->FullName );
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if (Mode == SAM_SID_COMPATIBILITY_ALL) {
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NetDisplayUser->usri1_user_id = DomainDisplayUser->Rid;
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} else {
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NetDisplayUser->usri1_user_id = 0;
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}
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NetDisplayUser->usri1_next_index = DomainDisplayUser->Index;
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break;
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}
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case 2: {
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PNET_DISPLAY_MACHINE NetDisplayMachine = (PNET_DISPLAY_MACHINE)FixedData;
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COPY_STRING( &NetDisplayMachine->usri2_name,
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DomainDisplayMachine->Machine );
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COPY_STRING( &NetDisplayMachine->usri2_comment,
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DomainDisplayMachine->Comment );
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NetDisplayMachine->usri2_flags = NetpAccountControlToFlags(
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DomainDisplayMachine->AccountControl,
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NULL );
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if (Mode == SAM_SID_COMPATIBILITY_ALL) {
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NetDisplayMachine->usri2_user_id = DomainDisplayMachine->Rid;
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} else {
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NetDisplayMachine->usri2_user_id = 0;
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}
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NetDisplayMachine->usri2_next_index = DomainDisplayMachine->Index;
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break;
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}
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case 3: {
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PNET_DISPLAY_GROUP NetDisplayGroup = (PNET_DISPLAY_GROUP)FixedData;
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COPY_STRING( &NetDisplayGroup->grpi3_name,
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DomainDisplayGroup->Group );
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COPY_STRING( &NetDisplayGroup->grpi3_comment,
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DomainDisplayGroup->Comment );
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if (Mode == SAM_SID_COMPATIBILITY_ALL) {
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NetDisplayGroup->grpi3_group_id = DomainDisplayGroup->Rid;
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} else {
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NetDisplayGroup->grpi3_group_id = 0;
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}
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NetDisplayGroup->grpi3_attributes = DomainDisplayGroup->Attributes;
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NetDisplayGroup->grpi3_next_index = DomainDisplayGroup->Index;
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break;
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}
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default:
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NetStatus = ERROR_INVALID_LEVEL;
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goto Cleanup;
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}
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//
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// Indicate that more information was returned.
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//
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(*ReturnedEntryCount) ++;
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}
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NetStatus = SavedStatus;
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//
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// Clean up.
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//
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Cleanup:
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//
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// Free up all resources, we reopen them if the caller calls again.
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//
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if ( DomainHandle != NULL ) {
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UaspCloseDomain( DomainHandle );
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}
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if ( SamServerHandle != NULL ) {
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(VOID) SamCloseHandle( SamServerHandle );
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}
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//
|
|
// If we're not returning data to the caller,
|
|
// free the return buffer.
|
|
//
|
|
|
|
if ( NetStatus != NERR_Success && NetStatus != ERROR_MORE_DATA ) {
|
|
if ( BufferDescriptor.Buffer != NULL ) {
|
|
MIDL_user_free( BufferDescriptor.Buffer );
|
|
BufferDescriptor.Buffer = NULL;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Free buffer returned from SAM.
|
|
//
|
|
|
|
if ( SamSortedBuffer != NULL ) {
|
|
(VOID) SamFreeMemory( SamSortedBuffer );
|
|
}
|
|
|
|
//
|
|
// Set the output parameters
|
|
//
|
|
|
|
*SortedBuffer = BufferDescriptor.Buffer;
|
|
|
|
IF_DEBUG( UAS_DEBUG_USER ) {
|
|
NetpKdPrint(( "NetQueryDisplayInformation: returning %ld\n", NetStatus ));
|
|
}
|
|
|
|
return NetStatus;
|
|
|
|
}
|
|
|
|
|
|
NET_API_STATUS NET_API_FUNCTION
|
|
NetGetDisplayInformationIndex(
|
|
IN LPCWSTR ServerName OPTIONAL,
|
|
IN DWORD Level,
|
|
IN LPCWSTR Prefix,
|
|
OUT LPDWORD Index )
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This routine returns the index of the first display information entry
|
|
alphabetically equal to or following Prefix.
|
|
|
|
Parameters:
|
|
|
|
|
|
ServerName - A pointer to a string containing the name of the remote
|
|
server on which the function is to execute. A NULL pointer
|
|
or string specifies the local machine.
|
|
|
|
Level - Level of information queried. Must be
|
|
|
|
1 --> all Local and Global (normal) user accounts
|
|
2 --> all Workstation and Server (BDC) user accounts
|
|
3 --> all Global Groups.
|
|
|
|
|
|
Prefix - Prefix to be searched for
|
|
|
|
Index - The index of the entry found.
|
|
|
|
Return Values:
|
|
|
|
NERR_Success - normal, successful completion. The specified index
|
|
was returned.
|
|
|
|
ERROR_ACCESS_DENIED - The caller doesn't have access to the requested
|
|
information.
|
|
|
|
ERROR_INVALID_LEVEL - The requested level of information
|
|
is not legitimate for this service.
|
|
|
|
--*/
|
|
{
|
|
NET_API_STATUS NetStatus;
|
|
NTSTATUS Status;
|
|
|
|
SAM_HANDLE SamServerHandle = NULL;
|
|
SAM_HANDLE DomainHandle = NULL;
|
|
|
|
DOMAIN_DISPLAY_INFORMATION DisplayInformation;
|
|
UNICODE_STRING PrefixString;
|
|
|
|
DWORD Mode = SAM_SID_COMPATIBILITY_ALL;
|
|
|
|
//
|
|
// Validate Level parameter
|
|
//
|
|
|
|
switch (Level) {
|
|
case 1:
|
|
DisplayInformation = DomainDisplayUser;
|
|
break;
|
|
case 2:
|
|
DisplayInformation = DomainDisplayMachine;
|
|
break;
|
|
case 3:
|
|
DisplayInformation = DomainDisplayGroup;
|
|
break;
|
|
|
|
default:
|
|
return ERROR_INVALID_LEVEL;
|
|
|
|
}
|
|
|
|
//
|
|
// Connect to the SAM server
|
|
//
|
|
|
|
NetStatus = UaspOpenSam( ServerName,
|
|
FALSE, // Don't try null session
|
|
&SamServerHandle );
|
|
|
|
if ( NetStatus != NERR_Success ) {
|
|
IF_DEBUG( UAS_DEBUG_USER ) {
|
|
NetpKdPrint(( "NetGetDisplayInformationIndex: Cannot UaspOpenSam %ld\n", NetStatus ));
|
|
}
|
|
goto Cleanup;
|
|
}
|
|
|
|
//
|
|
// Open the Account Domain.
|
|
//
|
|
|
|
NetStatus = UaspOpenDomain( SamServerHandle,
|
|
DOMAIN_LIST_ACCOUNTS,
|
|
TRUE, // Account Domain
|
|
&DomainHandle,
|
|
NULL );
|
|
|
|
if ( NetStatus != NERR_Success ) {
|
|
goto Cleanup;
|
|
}
|
|
|
|
Status = SamGetCompatibilityMode(DomainHandle,
|
|
&Mode);
|
|
if (NT_SUCCESS(Status)) {
|
|
if ( (Mode == SAM_SID_COMPATIBILITY_STRICT)) {
|
|
//
|
|
// All these info levels return RID's
|
|
//
|
|
Status = STATUS_NOT_SUPPORTED;
|
|
}
|
|
}
|
|
if (!NT_SUCCESS(Status)) {
|
|
NetStatus = NetpNtStatusToApiStatus( Status );
|
|
goto Cleanup;
|
|
}
|
|
|
|
//
|
|
// Pass the call to SAM
|
|
//
|
|
|
|
RtlInitUnicodeString( &PrefixString, Prefix );
|
|
|
|
Status = SamGetDisplayEnumerationIndex (
|
|
DomainHandle,
|
|
DisplayInformation,
|
|
&PrefixString,
|
|
Index );
|
|
|
|
if ( !NT_SUCCESS( Status ) ) {
|
|
IF_DEBUG( UAS_DEBUG_USER ) {
|
|
NetpKdPrint((
|
|
"NetGetDisplayInformationIndex: SamGetDisplayEnumerationIndex returned %lX\n",
|
|
Status ));
|
|
}
|
|
|
|
NetStatus = NetpNtStatusToApiStatus( Status );
|
|
goto Cleanup;
|
|
}
|
|
|
|
Status = NERR_Success;
|
|
|
|
//
|
|
// Clean up.
|
|
//
|
|
|
|
Cleanup:
|
|
|
|
//
|
|
// Free up all resources, we reopen them if the caller calls again.
|
|
//
|
|
|
|
if ( DomainHandle != NULL ) {
|
|
UaspCloseDomain( DomainHandle );
|
|
}
|
|
if ( SamServerHandle != NULL ) {
|
|
(VOID) SamCloseHandle( SamServerHandle );
|
|
}
|
|
|
|
//
|
|
// Set the output parameters
|
|
//
|
|
|
|
IF_DEBUG( UAS_DEBUG_USER ) {
|
|
NetpKdPrint(( "NetGetDisplayInformationIndex: returning %ld\n", NetStatus ));
|
|
}
|
|
|
|
return NetStatus;
|
|
|
|
}
|