527 lines
19 KiB
C
527 lines
19 KiB
C
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/*************************************************************************
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*
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* registry.c
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*
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* WinStation Registry Routines
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*
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* Copyright Microsoft Corporation, 1998
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*
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*
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*************************************************************************/
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/*
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* Includes
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*/
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#include "precomp.h"
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#pragma hdrstop
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/*=============================================================================
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== Public functions
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=============================================================================*/
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NTSTATUS WinStationReadRegistryWorker( VOID );
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/*=============================================================================
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== Functions Used
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=============================================================================*/
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NTSTATUS IcaRegWinStationEnumerate( PULONG, PWINSTATIONNAME, PULONG );
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NTSTATUS QueueWinStationCreate( PWINSTATIONNAME );
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PWINSTATION FindWinStationByName( LPWSTR WinStationName, BOOLEAN LockList );
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NTSTATUS QueueWinStationReset( ULONG LogonId );
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NTSTATUS ReadWinStationSecurityDescriptor( PWINSTATION pWinStation );
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NTSTATUS WinStationRenameWorker(PWINSTATIONNAME, ULONG, PWINSTATIONNAME, ULONG);
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/*=============================================================================
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== Global data
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=============================================================================*/
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extern LIST_ENTRY WinStationListHead; // protected by WinStationListLock
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extern RTL_RESOURCE WinStationSecurityLock;
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extern POLICY_TS_MACHINE g_MachinePolicy; //defined in winsta.c
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extern RTL_RESOURCE WinStationSecurityLock;
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/*******************************************************************************
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*
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* WinStationReadRegistryWorker
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*
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* Update the listening winstations to match the registry
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*
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* This function assumes that g_MachinePolicy is up to date. This object is a global object
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* which is updated on TS startup, and any time there is a TS related policy change.
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*
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* ENTRY:
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* nothing
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*
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* EXIT:
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* STATUS_SUCCESS - no error
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*
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******************************************************************************/
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typedef struct _RENAMEINFO {
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WINSTATIONNAME OldName;
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BOOLEAN Renamed;
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} RENAMEINFO, *PRENAMEINFO;
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#define KEEP_ALIVE_INTERVAL_DFLT 4 // in minutes
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NTSTATUS
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WinStationKeepAlive()
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{
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NTSTATUS Status;
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ICA_KEEP_ALIVE k;
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HANDLE hKeepAlive;
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static ICA_KEEP_ALIVE kPrev;
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static BOOLEAN firstTime = TRUE;
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k.start = FALSE;
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k.interval = 0;
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if ( g_MachinePolicy.fPolicyKeepAlive )
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{
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k.start = (BOOLEAN) g_MachinePolicy.fKeepAliveEnable;
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k.interval = g_MachinePolicy.KeepAliveInterval;
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}
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else
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{
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// read to see what the registry policy is set to...
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// Code below was cut/paste from termdd ( where Zw was replaced with Nt )
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UNICODE_STRING RegistryPath;
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UNICODE_STRING KeyName;
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HANDLE hKey;
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OBJECT_ATTRIBUTES ObjAttribs;
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ULONG KeyInfoBuffer[16];
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ULONG KeyInfoLength;
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PKEY_VALUE_PARTIAL_INFORMATION pKeyInfo;
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ULONG KeepAliveEnable;
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ULONG KeepAliveInterval;
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// Open the Terminal Server subkey under \\HKEY_LOCAL_MACHINE\SYSTEM\CurrentConttrolSet\
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// Control\Terminal Server
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RtlInitUnicodeString(&RegistryPath, REG_NTAPI_CONTROL_TSERVER);
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InitializeObjectAttributes(&ObjAttribs, &RegistryPath, OBJ_CASE_INSENSITIVE, NULL, NULL);
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Status = NtOpenKey(&hKey, KEY_READ, &ObjAttribs);
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if (Status == STATUS_SUCCESS) {
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pKeyInfo = (PKEY_VALUE_PARTIAL_INFORMATION)KeyInfoBuffer;
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// Get the value for KeepAliveEnable Key
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RtlInitUnicodeString(&KeyName, KEEP_ALIVE_ENABLE_KEY);
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Status = NtQueryValueKey(hKey, &KeyName, KeyValuePartialInformation,
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pKeyInfo, sizeof(KeyInfoBuffer), &KeyInfoLength);
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if ((Status == STATUS_SUCCESS) && (pKeyInfo->Type == REG_DWORD) &&
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(pKeyInfo->DataLength == sizeof(ULONG))) {
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KeepAliveEnable = *((PULONG) pKeyInfo->Data);
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}
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else {
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// By default, we don't enable keepalive
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KeepAliveEnable = 0;
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}
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if (KeepAliveEnable) {
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// Get the value for KeepAliveInterval
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RtlInitUnicodeString(&KeyName, KEEP_ALIVE_INTERVAL_KEY);
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Status = NtQueryValueKey(hKey, &KeyName, KeyValuePartialInformation,
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pKeyInfo, sizeof(KeyInfoBuffer), &KeyInfoLength);
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if (Status == STATUS_SUCCESS && (pKeyInfo->Type == REG_DWORD) &&
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(pKeyInfo->DataLength == sizeof(ULONG))) {
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KeepAliveInterval = *((PULONG) pKeyInfo->Data);
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}
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else {
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// The default KeepAliveInterval is 2 min
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KeepAliveInterval = KEEP_ALIVE_INTERVAL_DFLT;
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}
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}
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else {
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// The default KeepAliveInterval
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KeepAliveInterval = KEEP_ALIVE_INTERVAL_DFLT;
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}
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// Close the Key
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NtClose(hKey);
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}
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else {
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// Set the default values for KeepAlive parameters
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KeepAliveEnable = 0;
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KeepAliveInterval = KEEP_ALIVE_INTERVAL_DFLT;
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}
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k.start = (BOOLEAN )KeepAliveEnable;
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k.interval = KeepAliveInterval;
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}
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if ( firstTime )
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{
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kPrev = k;
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}
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else
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{
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#ifdef DBG
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#ifdef ARABERN_TEST
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#include <time.h>
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ULONG x;
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srand( (unsigned)time( NULL ) );
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x = rand();
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k.start = (BOOLEAN ) (0x00000001 & x) ;
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k.interval = 0x00000008 & x ;
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#endif
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#endif
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if ( ( kPrev.start == k.start ) && ( kPrev.interval == k.interval ) )
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{
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// no change, nothing to do, so return;
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return STATUS_SUCCESS;
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}
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}
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/*
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* Open TermDD.
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*/
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Status = IcaOpen(&hKeepAlive);
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if (NT_SUCCESS(Status))
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{
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Status = IcaIoControl(hKeepAlive, IOCTL_ICA_SYSTEM_KEEP_ALIVE , &k,
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sizeof(k), NULL, 0, NULL);
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IcaClose(hKeepAlive);
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hKeepAlive = NULL;
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}
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firstTime = FALSE;
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return Status;
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}
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NTSTATUS
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WinStationReadRegistryWorker()
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{
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ULONG WinStationCount;
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ULONG ByteCount;
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WINSTATIONNAME * pWinStationName;
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PWINSTATIONCONFIG2 pWinConfig;
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PWINSTATION pWinStation;
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PRENAMEINFO pRenameInfo;
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PLIST_ENTRY Head, Next;
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NTSTATUS Status;
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ULONG i;
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if ( !gbServer )
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ENTERCRIT( &WinStationListenersLock );
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// see if keep alive is required, then IOCTL it to TermDD
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WinStationKeepAlive();
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/*
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* Get the number of WinStations in the registry
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*/
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WinStationCount = 0;
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Status = IcaRegWinStationEnumerate( &WinStationCount, NULL, &ByteCount );
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if ( !NT_SUCCESS(Status) )
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goto badenum1;
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/*
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* Allocate a buffer for the WinStation names
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*/
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pWinStationName = MemAlloc( ByteCount );
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if ( pWinStationName == NULL ) {
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Status = STATUS_NO_MEMORY;
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goto badalloc1;
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}
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/*
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* Get list of WinStation names from registry
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*/
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WinStationCount = (ULONG) -1;
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Status = IcaRegWinStationEnumerate( &WinStationCount,
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(PWINSTATIONNAME)pWinStationName,
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&ByteCount );
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if ( !NT_SUCCESS(Status) )
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goto badenum2;
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/*
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* Allocate a buffer for WinStation configuration data
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*/
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pWinConfig = MemAlloc( sizeof(WINSTATIONCONFIG2) * WinStationCount );
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if ( pWinConfig == NULL ) {
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Status = STATUS_NO_MEMORY;
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goto badalloc2;
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}
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/*
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* Allocate a buffer for tracking listener WinStation renames
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*/
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pRenameInfo = MemAlloc( sizeof(RENAMEINFO) * WinStationCount );
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if ( pRenameInfo == NULL ) {
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Status = STATUS_NO_MEMORY;
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goto badalloc3;
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}
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/*
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* Now query the configuration data for each of the WinStation names
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*/
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for ( i = 0; i < WinStationCount; i++ ) {
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pRenameInfo[i].Renamed = FALSE;
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{
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TRACE((hTrace,TC_ICASRV,TT_API2,"TERMSRV: WinStationReadRegistryWorker: %S\n",pWinStationName[i]));
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Status = RegWinStationQueryEx(
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SERVERNAME_CURRENT,
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&g_MachinePolicy,
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pWinStationName[i],
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&pWinConfig[i],
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sizeof(WINSTATIONCONFIG2),
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&ByteCount, TRUE );
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if ( !NT_SUCCESS(Status) ) {
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goto badregdata;
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}
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}
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}
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/*
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* Check if any existing WinStations need to be deleted
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*/
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Head = &WinStationListHead;
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ENTERCRIT( &WinStationListLock );
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for ( Next = Head->Flink; Next != Head; Next = Next->Flink ) {
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pWinStation = CONTAINING_RECORD( Next, WINSTATION, Links );
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/*
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* only check listening and single-instance winstations
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*/
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if ( !(pWinStation->Flags & WSF_LISTEN) &&
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!(pWinStation->Config.Pd[0].Create.PdFlag & PD_SINGLE_INST) )
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continue;
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/* check if name still exists in the registry */
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for ( i = 0; i < WinStationCount; i++ ) {
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if ( !_wcsicmp( pWinStationName[i], pWinStation->WinStationName ) ) {
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break;
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}
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}
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if ( i == WinStationCount ) {
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/* The WinStation is not in the registry. If the listener was
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renamed, we don't want to reset it. We look for a registry
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entry which has the same configuration info.
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*/
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for ( i = 0; i < WinStationCount; i++ ) {
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if ( !memcmp( &pWinStation->Config, &pWinConfig[i], sizeof(WINSTATIONCONFIG2) ) ) {
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pRenameInfo[i].Renamed = TRUE;
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wcscpy(pRenameInfo[i].OldName, pWinStation->WinStationName);
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DBGPRINT(("TERMSRV: Renaming %ws to %ws\n",
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pWinStation->WinStationName, pWinStationName[i]));
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break;
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}
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}
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}
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/* If no match was found in the registry, or if the matching
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listener is diabled, reset the listener.
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*/
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if ((i == WinStationCount) ||
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(CheckWinStationEnable(!pRenameInfo[i].Renamed ?
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pWinStation->WinStationName :
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pWinStationName[i]) != STATUS_SUCCESS)) {
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TRACE((hTrace,TC_ICASRV,TT_API2,"TERMSRV: WinStationReadRegistryWorker: DELETE %u\n",
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pWinStation->LogonId ));
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QueueWinStationReset( pWinStation->LogonId );
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}
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}
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LEAVECRIT( &WinStationListLock );
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/*
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* Check if any WinStations need to be created or reset
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*/
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for ( i = 0; i < WinStationCount; i++ ) {
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if ( _wcsicmp( pWinStationName[i], L"Console" ) ){
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/*
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* Ignore console WinStation
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*/
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/*
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* If this WinStation exists, then see if the Registry data
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* has changed. If so, then reset the WinStation.
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*/
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if ( pWinStation = FindWinStationByName( pWinStationName[i], FALSE ) ) {
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if ( memcmp( &pWinStation->Config, &pWinConfig[i], sizeof(WINSTATIONCONFIG2) ) ) {
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/*
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* NOTE: For network WinStations, we test to see if the Lan
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* Adapter setting has changed. If not, we simply
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* refresh the configuration data since resetting the
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* WinStation would reset ALL connections on the same
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* Transport/Lan adapter combination.
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*/
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if ( pWinConfig[i].Pd[0].Create.SdClass == SdNetwork &&
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pWinConfig[i].Pd[0].Params.Network.LanAdapter ==
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pWinStation->Config.Pd[0].Params.Network.LanAdapter ) {
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memcpy( &pWinStation->Config, &pWinConfig[i], sizeof(WINSTATIONCONFIG2) );
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/*
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* Listening network winstations should update their security
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* descriptors.
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*/
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RtlAcquireResourceExclusive(&WinStationSecurityLock, TRUE);
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ReadWinStationSecurityDescriptor( pWinStation );
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RtlReleaseResource(&WinStationSecurityLock);
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/*
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* NOTE: For async WinStations, if the WinStation is NOT in
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* in the listen state and the Device name and Modem
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* name have not changed, then we do nothing. The
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* new config data will be read when the WinStation
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* is next re-created.
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*/
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} else if ( pWinConfig[i].Pd[0].Create.SdClass == SdAsync &&
|
||
|
|
pWinStation->State != State_Listen &&
|
||
|
|
!memcmp ( pWinConfig[i].Pd[0].Params.Async.DeviceName,
|
||
|
|
pWinStation->Config.Pd[0].Params.Async.DeviceName,
|
||
|
|
sizeof( pWinConfig[i].Pd[0].Params.Async.DeviceName ) ) &&
|
||
|
|
!memcmp ( pWinConfig[i].Pd[0].Params.Async.ModemName,
|
||
|
|
pWinStation->Config.Pd[0].Params.Async.ModemName,
|
||
|
|
sizeof( pWinConfig[i].Pd[0].Params.Async.ModemName ) ) ) {
|
||
|
|
|
||
|
|
// Nothing to do
|
||
|
|
|
||
|
|
/*
|
||
|
|
* NOTE: For OEM WinStations, if the WinStation is NOT in
|
||
|
|
* in the listen state and the Pd[0] params have not
|
||
|
|
* changed, then we do nothing. The new config data
|
||
|
|
* will be read when the WinStation is next re-created.
|
||
|
|
*/
|
||
|
|
} else if ( pWinConfig[i].Pd[0].Create.SdClass == SdOemTransport &&
|
||
|
|
pWinStation->State != State_Listen &&
|
||
|
|
!memcmp ( &pWinConfig[i].Pd[0].Params,
|
||
|
|
&pWinStation->Config.Pd[0].Params,
|
||
|
|
sizeof( pWinConfig[i].Pd[0].Params ) ) ) {
|
||
|
|
|
||
|
|
// Nothing to do
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
BOOLEAN bRecreate = TRUE;
|
||
|
|
|
||
|
|
if ( !gbServer ) {
|
||
|
|
if ( g_fDenyTSConnectionsPolicy &&
|
||
|
|
// Performance, we only want to check if policy enable help when connection is denied
|
||
|
|
(!TSIsMachineInHelpMode() || !TSIsMachinePolicyAllowHelp()) ) {
|
||
|
|
|
||
|
|
bRecreate = FALSE;
|
||
|
|
}
|
||
|
|
|
||
|
|
WinStationResetWorker( pWinStation->LogonId, TRUE, FALSE, bRecreate );
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
QueueWinStationReset( pWinStation->LogonId );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else if ( !(pWinStation->Config.Pd[0].Create.PdFlag & PD_SINGLE_INST) ||
|
||
|
|
( pWinStation->State == State_Listen ) ) {
|
||
|
|
|
||
|
|
RtlAcquireResourceExclusive(&WinStationSecurityLock, TRUE);
|
||
|
|
ReadWinStationSecurityDescriptor( pWinStation );
|
||
|
|
RtlReleaseResource(&WinStationSecurityLock);
|
||
|
|
}
|
||
|
|
ReleaseWinStation( pWinStation );
|
||
|
|
|
||
|
|
} else
|
||
|
|
if (pRenameInfo[i].Renamed &&
|
||
|
|
NT_SUCCESS(WinStationRenameWorker(pRenameInfo[i].OldName,
|
||
|
|
sizeof(WINSTATIONNAMEW)/sizeof(WCHAR),
|
||
|
|
pWinStationName[i],
|
||
|
|
sizeof(WINSTATIONNAMEW)/sizeof(WCHAR)))) {
|
||
|
|
// Rename succeeded - don't recreate listener
|
||
|
|
/*
|
||
|
|
* An active WinStation was not found so we will create one.
|
||
|
|
*/
|
||
|
|
} else {
|
||
|
|
|
||
|
|
if ( !gbServer &&
|
||
|
|
g_fDenyTSConnectionsPolicy &&
|
||
|
|
// Performance, we only want to check if policy enable help when connection is denied
|
||
|
|
(!TSIsMachineInHelpMode() || !TSIsMachinePolicyAllowHelp()) ) {
|
||
|
|
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* NOTE: NEVER create TAPI modem winstations in this routine.
|
||
|
|
* We only allow creation of these winstations at
|
||
|
|
* system startup time due to issues with the TAPI
|
||
|
|
* database potentially being locked by this and other
|
||
|
|
* processes, resulting in incorrect TAPI device
|
||
|
|
* enumeration.
|
||
|
|
*/
|
||
|
|
if ( pWinConfig[i].Cd.CdClass != CdModem ) {
|
||
|
|
if (!gbServer ) {
|
||
|
|
WinStationCreateWorker( pWinStationName[i], NULL );
|
||
|
|
} else {
|
||
|
|
QueueWinStationCreate( pWinStationName[i] );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
// we are dealing with the console session, update userconfig's shadow bit, that is
|
||
|
|
// the only item I know of that needs updating.
|
||
|
|
if ( pWinStation = FindWinStationByName( pWinStationName[i], FALSE ) ) {
|
||
|
|
pWinStation->Config.Config.User.Shadow = pWinConfig[i].Config.User.Shadow;
|
||
|
|
pWinStation->Config.Config.User.fInheritShadow = pWinConfig[i].Config.User.fInheritShadow;
|
||
|
|
TRACE((hTrace,TC_ICASRV,TT_API2,"TERMSRV: WinStationReadRegistryWorker: %S, Shadow value of %d copied to console session's USERCONFIG\n",pWinStationName[i],
|
||
|
|
pWinConfig[i].Config.User.Shadow));
|
||
|
|
ReleaseWinStation( pWinStation );
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Free buffers
|
||
|
|
*/
|
||
|
|
MemFree( pRenameInfo );
|
||
|
|
MemFree( pWinConfig );
|
||
|
|
MemFree( pWinStationName );
|
||
|
|
|
||
|
|
if ( !gbServer )
|
||
|
|
LEAVECRIT( &WinStationListenersLock );
|
||
|
|
|
||
|
|
return( STATUS_SUCCESS );
|
||
|
|
|
||
|
|
/*=============================================================================
|
||
|
|
== Error returns
|
||
|
|
=============================================================================*/
|
||
|
|
|
||
|
|
badregdata:
|
||
|
|
MemFree( pRenameInfo );
|
||
|
|
badalloc3:
|
||
|
|
MemFree( pWinConfig );
|
||
|
|
badalloc2:
|
||
|
|
badenum2:
|
||
|
|
MemFree( pWinStationName );
|
||
|
|
badalloc1:
|
||
|
|
badenum1:
|
||
|
|
|
||
|
|
if ( !gbServer )
|
||
|
|
LEAVECRIT( &WinStationListenersLock );
|
||
|
|
|
||
|
|
return( Status );
|
||
|
|
}
|