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796 lines
27 KiB
796 lines
27 KiB
// --------------------------------------------------------------------------
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// Module Name: ThemeServerClient.cpp
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//
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// Copyright (c) 2000, Microsoft Corporation
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//
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// This file contains a class that implements the theme server functions that
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// are executed in a client context (winlogon context).
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//
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// History: 2000-11-29 vtan created
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// --------------------------------------------------------------------------
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#include "StandardHeader.h"
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#define STRSAFE_LIB
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#include <strsafe.h>
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#include "ThemeServerClient.h"
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#include <lpcthemes.h>
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#include <uxthemep.h>
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#include <UxThemeServer.h>
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#include "SingleThreadedExecution.h"
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#include "StatusCode.h"
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#include "ThemeManagerService.h"
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#include <Impersonation.h>
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// --------------------------------------------------------------------------
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// CThemeManagerAPI::s_pThemeManagerAPIServer
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// CThemeManagerAPI::s_hPort
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// CThemeManagerAPI::s_hToken
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// CThemeManagerAPI::s_hEvent
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// CThemeManagerAPI::s_hWaitObject
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// CThemeManagerAPI::s_pLock
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//
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// Purpose: Static member variables.
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//
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// History: 2000-11-29 vtan created
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// --------------------------------------------------------------------------
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CThemeManagerAPIServer* CThemeServerClient::s_pThemeManagerAPIServer = NULL;
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HANDLE CThemeServerClient::s_hPort = NULL;
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HANDLE CThemeServerClient::s_hToken = NULL;
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HANDLE CThemeServerClient::s_hEvent = NULL;
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HANDLE CThemeServerClient::s_hWaitObject = NULL;
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HMODULE CThemeServerClient::s_hModuleUxTheme = NULL;
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CCriticalSection* CThemeServerClient::s_pLock = NULL;
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// --------------------------------------------------------------------------
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// CThemeServerClient::WaitForServiceReady
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//
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// Arguments: dwTimeout = Number of ticks to wait.
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//
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// Returns: DWORD
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//
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// Purpose: Check if the service is autostart. If so then wait the
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// designated amount of time for the service. If the service
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// is then running or was running but isn't autostart then
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// re-establish the connection to the server.
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//
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// History: 2000-10-10 vtan created
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// 2000-11-29 vtan converted to a Win32 service
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// --------------------------------------------------------------------------
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DWORD CThemeServerClient::WaitForServiceReady (DWORD dwTimeout)
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{
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DWORD dwWaitResult;
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NTSTATUS status;
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dwWaitResult = WAIT_TIMEOUT;
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if (s_pThemeManagerAPIServer->IsAutoStart())
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{
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status = s_pThemeManagerAPIServer->Wait(dwTimeout);
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#ifdef DBG
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if (STATUS_TIMEOUT == status)
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{
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INFORMATIONMSG("Wait on auto start theme service timed out.");
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}
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#endif /* DBG */
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}
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else
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{
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status = STATUS_SUCCESS;
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}
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if (NT_SUCCESS(status) && s_pThemeManagerAPIServer->IsRunning())
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{
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status = ReestablishConnection();
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if (NT_SUCCESS(status))
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{
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THR(InitUserRegistry());
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THR(InitUserTheme(FALSE));
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dwWaitResult = WAIT_OBJECT_0;
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}
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}
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return(dwWaitResult);
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}
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// --------------------------------------------------------------------------
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// CThemeServerClient::WatchForStart
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//
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// Arguments: <none>
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//
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// Returns: NTSTATUS
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//
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// Purpose: Opens or creates the theme server announce event. This is a
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// manual reset event which the theme server pulses when it
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// starts up. This allows winlogon to initiate new connections
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// to the theme server without having to wait for logon or
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// logoff events to happen.
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//
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// This event is intentionally leaked and cleaned up when the
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// winlogon process for the session goes away.
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//
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// History: 2000-11-29 vtan created
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// --------------------------------------------------------------------------
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NTSTATUS CThemeServerClient::WatchForStart (void)
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{
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NTSTATUS status;
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s_hEvent = CThemeManagerService::OpenStartEvent(NtCurrentPeb()->SessionId, SYNCHRONIZE);
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if (s_hEvent != NULL)
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{
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if (RegisterWaitForSingleObject(&s_hWaitObject,
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s_hEvent,
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CB_ServiceStart,
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NULL,
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INFINITE,
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WT_EXECUTEDEFAULT | WT_EXECUTEONLYONCE) != FALSE)
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{
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status = STATUS_SUCCESS;
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}
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else
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{
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status = CStatusCode::StatusCodeOfLastError();
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}
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}
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else
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{
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status = CStatusCode::StatusCodeOfLastError();
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}
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return(status);
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}
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// --------------------------------------------------------------------------
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// CThemeServerClient::UserLogon
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//
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// Arguments: hToken = Token of user logging on.
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//
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// Returns: NTSTATUS
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//
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// Purpose: Signals the server that a user is logging on and gives the
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// server the handle to the token. The server will grant access
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// to the port based on the user's logon SID. Then perform work
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// to initialize the environment for the user logging on.
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//
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// History: 2000-10-10 vtan created
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// 2000-11-29 vtan converted to a Win32 service
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// --------------------------------------------------------------------------
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NTSTATUS CThemeServerClient::UserLogon (HANDLE hToken)
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{
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NTSTATUS status;
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status = NotifyUserLogon(hToken);
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if (STATUS_PORT_DISCONNECTED == status)
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{
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status = ReestablishConnection();
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if (NT_SUCCESS(status))
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{
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status = NotifyUserLogon(hToken);
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}
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}
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return(status);
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}
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// --------------------------------------------------------------------------
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// CThemeServerClient::UserLogoff
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//
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// Arguments: <none>
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//
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// Returns: NTSTATUS
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//
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// Purpose: Signals the server that the current user for this session is
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// logging off. The server will remove the access that was
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// granted at logon and reinitialize the theme settings to the
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// ".Default" settings.
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//
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// History: 2000-10-10 vtan created
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// 2000-11-29 vtan converted to a Win32 service
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// --------------------------------------------------------------------------
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NTSTATUS CThemeServerClient::UserLogoff (void)
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{
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NTSTATUS status;
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status = NotifyUserLogoff();
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if (STATUS_PORT_DISCONNECTED == status)
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{
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status = ReestablishConnection();
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if (NT_SUCCESS(status))
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{
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status = NotifyUserLogoff();
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}
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}
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return(status);
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}
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// --------------------------------------------------------------------------
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// CThemeServerClient::UserInitTheme
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//
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// Arguments: BOOL
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//
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// Returns: NTSTATUS
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//
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// Purpose: Called at logon, or when Terminal Server connects a user to a
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// remote session or reconnects to a local session. Needs to
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// evaluate the environment and decide if themes need to be loaded
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// or unloaded.
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//
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// History: 2000-01-18 rfernand created
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// --------------------------------------------------------------------------
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NTSTATUS CThemeServerClient::UserInitTheme (BOOL fPolicyCheckOnly)
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{
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bool fSuccessfulImpersonation;
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// If there's a token impersonate the user. Otherwise use the system context.
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if (s_hToken != NULL)
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{
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fSuccessfulImpersonation = NT_SUCCESS(CImpersonation::ImpersonateUser(GetCurrentThread(), s_hToken));
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}
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else
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{
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fSuccessfulImpersonation = true;
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}
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if (fSuccessfulImpersonation)
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{
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(HRESULT)InitUserTheme(fPolicyCheckOnly);
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}
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if (fSuccessfulImpersonation && (s_hToken != NULL))
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{
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if (RevertToSelf() == FALSE)
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{
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return CStatusCode::StatusCodeOfLastError();
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}
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}
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return STATUS_SUCCESS;
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}
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// --------------------------------------------------------------------------
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// CThemeServerClient::StaticInitialize
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//
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// Arguments: <none>
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//
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// Returns: NTSTATUS
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//
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// Purpose: Initializes static member variables. Allocate a
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// CThemeManagerAPIServer and a lock for this object.
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//
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// History: 2000-11-29 vtan created
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// --------------------------------------------------------------------------
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NTSTATUS CThemeServerClient::StaticInitialize (void)
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{
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NTSTATUS status;
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if (s_pThemeManagerAPIServer == NULL)
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{
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status = STATUS_NO_MEMORY;
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s_pThemeManagerAPIServer = new CThemeManagerAPIServer;
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if (s_pThemeManagerAPIServer != NULL)
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{
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s_pLock = new CCriticalSection;
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if (s_pLock != NULL)
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{
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status = STATUS_SUCCESS;
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}
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}
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}
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else
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{
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status = STATUS_SUCCESS;
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}
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return(status);
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}
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// --------------------------------------------------------------------------
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// CThemeServerClient::StaticTerminate
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//
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// Arguments: <none>
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//
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// Returns: NTSTATUS
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//
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// Purpose: Release static member variables initialized.
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//
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// History: 2000-11-29 vtan created
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// --------------------------------------------------------------------------
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NTSTATUS CThemeServerClient::StaticTerminate (void)
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{
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if (s_pLock != NULL)
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{
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delete s_pLock;
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s_pLock = NULL;
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}
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if (s_pThemeManagerAPIServer != NULL)
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{
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s_pThemeManagerAPIServer->Release();
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s_pThemeManagerAPIServer = NULL;
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}
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return(STATUS_SUCCESS);
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}
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// --------------------------------------------------------------------------
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// CThemeServerClient::NotifyUserLogon
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//
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// Arguments: <none>
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//
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// Returns: NTSTATUS
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//
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// Purpose: Execute the send message to the server and tell it that the
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// given user is now logged on. This will instruct the server
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// to grant access to the ThemeApiPort.
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//
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// History: 2000-11-29 vtan created
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// --------------------------------------------------------------------------
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NTSTATUS CThemeServerClient::NotifyUserLogon (HANDLE hToken)
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{
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NTSTATUS status = STATUS_NO_MEMORY;
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if (s_pLock != NULL)
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{
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CSingleThreadedExecution lock(*s_pLock);
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if (s_hPort != NULL)
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{
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status = InformServerUserLogon(hToken);
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}
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else
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{
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status = STATUS_PORT_DISCONNECTED;
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}
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// Keep a copy of the token as well in case of demand start of
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// the theme server so we can impersonate the user when we load
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// their theme using InitUserTheme. Don't copy it if it already
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// exists.
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if (s_hToken == NULL)
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{
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TBOOL(DuplicateHandle(GetCurrentProcess(),
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hToken,
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GetCurrentProcess(),
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&s_hToken,
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0,
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FALSE,
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DUPLICATE_SAME_ACCESS));
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}
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}
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return(status);
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}
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// --------------------------------------------------------------------------
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// CThemeServerClient::NotifyUserLogoff
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//
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// Arguments: <none>
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//
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// Returns: NTSTATUS
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//
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// Purpose: Tell the server that the logged on user is logged off. This
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// will remove access to ThemeApiPort.
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//
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// History: 2000-11-29 vtan created
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// --------------------------------------------------------------------------
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NTSTATUS CThemeServerClient::NotifyUserLogoff (void)
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{
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NTSTATUS status = STATUS_NO_MEMORY;
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if (s_pLock != NULL)
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{
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CSingleThreadedExecution lock(*s_pLock);
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if (s_hToken != NULL)
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{
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ReleaseHandle(s_hToken);
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if (s_hPort != NULL)
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{
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status = InformServerUserLogoff();
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}
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else
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{
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status = STATUS_PORT_DISCONNECTED;
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}
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}
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else
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{
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status = STATUS_SUCCESS;
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}
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}
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return(status);
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}
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// --------------------------------------------------------------------------
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// CThemeServerClient::InformServerUserLogon
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//
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// Arguments: <none>
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//
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// Returns: NTSTATUS
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//
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// Purpose: Tell the server that the logged on user is logged off. This
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// will remove access to ThemeApiPort.
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//
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// History: 2000-12-05 vtan created
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// --------------------------------------------------------------------------
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NTSTATUS CThemeServerClient::InformServerUserLogon (HANDLE hToken)
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{
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NTSTATUS status;
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THEMESAPI_PORT_MESSAGE portMessageIn, portMessageOut;
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ZeroMemory(&portMessageIn, sizeof(portMessageIn));
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ZeroMemory(&portMessageOut, sizeof(portMessageOut));
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portMessageIn.apiThemes.apiGeneric.ulAPINumber = API_THEMES_USERLOGON;
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portMessageIn.apiThemes.apiSpecific.apiUserLogon.in.hToken = hToken;
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portMessageIn.portMessage.u1.s1.DataLength = sizeof(API_THEMES);
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portMessageIn.portMessage.u1.s1.TotalLength = static_cast<CSHORT>(sizeof(THEMESAPI_PORT_MESSAGE));
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status = NtRequestWaitReplyPort(s_hPort,
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&portMessageIn.portMessage,
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&portMessageOut.portMessage);
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if (NT_SUCCESS(status))
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{
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status = portMessageOut.apiThemes.apiGeneric.status;
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if (NT_SUCCESS(status))
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{
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THR(InitUserTheme(FALSE));
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}
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}
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return(status);
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}
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// --------------------------------------------------------------------------
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// CThemeServerClient::InformServerUserLogoff
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//
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// Arguments: <none>
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//
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// Returns: NTSTATUS
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//
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// Purpose: Tell the server that the logged on user is logged off. This
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// will remove access to ThemeApiPort.
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//
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// History: 2000-12-05 vtan created
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// --------------------------------------------------------------------------
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NTSTATUS CThemeServerClient::InformServerUserLogoff (void)
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{
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NTSTATUS status;
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THEMESAPI_PORT_MESSAGE portMessageIn, portMessageOut;
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ZeroMemory(&portMessageIn, sizeof(portMessageIn));
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ZeroMemory(&portMessageOut, sizeof(portMessageOut));
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portMessageIn.apiThemes.apiGeneric.ulAPINumber = API_THEMES_USERLOGOFF;
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portMessageIn.portMessage.u1.s1.DataLength = sizeof(API_THEMES);
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portMessageIn.portMessage.u1.s1.TotalLength = static_cast<CSHORT>(sizeof(THEMESAPI_PORT_MESSAGE));
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status = NtRequestWaitReplyPort(s_hPort,
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&portMessageIn.portMessage,
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&portMessageOut.portMessage);
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if (NT_SUCCESS(status))
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{
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status = portMessageOut.apiThemes.apiGeneric.status;
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if (NT_SUCCESS(status))
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{
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THR(InitUserRegistry());
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THR(InitUserTheme(FALSE));
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}
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}
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return(status);
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}
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// --------------------------------------------------------------------------
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// CThemeServerClient::SessionCreate
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//
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// Arguments: <none>
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//
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// Returns: NTSTATUS
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//
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// Purpose: Signal the server that a new session is being created. This
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// allows the server to allocate a data blob for this session.
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//
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// History: 2000-11-11 vtan created
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// --------------------------------------------------------------------------
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NTSTATUS CThemeServerClient::SessionCreate (void)
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{
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NTSTATUS status = STATUS_NO_MEMORY;
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if (s_pLock != NULL)
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{
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CSingleThreadedExecution lock(*s_pLock);
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if (s_hModuleUxTheme == NULL)
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{
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s_hModuleUxTheme = LoadLibrary(TEXT("uxtheme.dll"));
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}
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if (s_hModuleUxTheme != NULL)
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{
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void *pfnRegister, *pfnUnregister, *pfnClearStockObjects;
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// Get the uxtheme function addresses in this process address space.
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// 34 = ThemeHooksInstall
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// 35 = ThemeHooksRemove
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// 62 = ServerClearStockObjects
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pfnRegister = GetProcAddress(s_hModuleUxTheme, MAKEINTRESOURCEA(34));
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pfnUnregister = GetProcAddress(s_hModuleUxTheme, MAKEINTRESOURCEA(35));
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pfnClearStockObjects = GetProcAddress(s_hModuleUxTheme, MAKEINTRESOURCEA(62));
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if ((pfnRegister != NULL) && (pfnUnregister != NULL) && (pfnClearStockObjects != NULL))
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{
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DWORD dwStackSizeReserve, dwStackSizeCommit;
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ULONG ulReturnLength;
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IMAGE_NT_HEADERS *pNTHeaders;
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SYSTEM_BASIC_INFORMATION systemBasicInformation;
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THEMESAPI_PORT_MESSAGE portMessageIn, portMessageOut;
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// Get system basic information for stack size defaults.
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status = NtQuerySystemInformation(SystemBasicInformation,
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&systemBasicInformation,
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sizeof(systemBasicInformation),
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&ulReturnLength);
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if (NT_SUCCESS(status))
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{
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dwStackSizeReserve = systemBasicInformation.AllocationGranularity;
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dwStackSizeCommit = systemBasicInformation.PageSize;
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}
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else
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{
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dwStackSizeReserve = dwStackSizeCommit = 0;
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}
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// Go to the image header for this process and get the stack size
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// defaults if they are specified. Otherwise use system defaults (above).
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pNTHeaders = RtlImageNtHeader(NtCurrentPeb()->ImageBaseAddress);
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if (pNTHeaders != NULL)
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{
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dwStackSizeReserve = static_cast<DWORD>(pNTHeaders->OptionalHeader.SizeOfStackReserve);
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dwStackSizeCommit = static_cast<DWORD>(pNTHeaders->OptionalHeader.SizeOfStackCommit);
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}
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// Make the call.
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ZeroMemory(&portMessageIn, sizeof(portMessageIn));
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ZeroMemory(&portMessageOut, sizeof(portMessageOut));
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portMessageIn.apiThemes.apiGeneric.ulAPINumber = API_THEMES_SESSIONCREATE;
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portMessageIn.apiThemes.apiSpecific.apiSessionCreate.in.pfnRegister = pfnRegister;
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|
portMessageIn.apiThemes.apiSpecific.apiSessionCreate.in.pfnUnregister = pfnUnregister;
|
|
portMessageIn.apiThemes.apiSpecific.apiSessionCreate.in.pfnClearStockObjects = pfnClearStockObjects;
|
|
portMessageIn.apiThemes.apiSpecific.apiSessionCreate.in.dwStackSizeReserve = dwStackSizeReserve;
|
|
portMessageIn.apiThemes.apiSpecific.apiSessionCreate.in.dwStackSizeCommit = dwStackSizeCommit;
|
|
portMessageIn.portMessage.u1.s1.DataLength = sizeof(API_THEMES);
|
|
portMessageIn.portMessage.u1.s1.TotalLength = static_cast<CSHORT>(sizeof(THEMESAPI_PORT_MESSAGE));
|
|
status = NtRequestWaitReplyPort(s_hPort,
|
|
&portMessageIn.portMessage,
|
|
&portMessageOut.portMessage);
|
|
if (NT_SUCCESS(status))
|
|
{
|
|
status = portMessageOut.apiThemes.apiGeneric.status;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
status = CStatusCode::StatusCodeOfLastError();
|
|
}
|
|
}
|
|
else
|
|
{
|
|
status = CStatusCode::StatusCodeOfLastError();
|
|
}
|
|
}
|
|
return(status);
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// CThemeServerClient::SessionDestroy
|
|
//
|
|
// Arguments: <none>
|
|
//
|
|
// Returns: NTSTATUS
|
|
//
|
|
// Purpose: Signal the server that the current session is about to be
|
|
// destroyed. This allows the server to release the data blob
|
|
// allocated.
|
|
//
|
|
// History: 2000-11-11 vtan created
|
|
// --------------------------------------------------------------------------
|
|
|
|
NTSTATUS CThemeServerClient::SessionDestroy (void)
|
|
|
|
{
|
|
NTSTATUS status = STATUS_NO_MEMORY;
|
|
|
|
if (s_pLock != NULL)
|
|
{
|
|
THEMESAPI_PORT_MESSAGE portMessageIn, portMessageOut;
|
|
CSingleThreadedExecution lock(*s_pLock);
|
|
|
|
ZeroMemory(&portMessageIn, sizeof(portMessageIn));
|
|
ZeroMemory(&portMessageOut, sizeof(portMessageOut));
|
|
portMessageIn.apiThemes.apiGeneric.ulAPINumber = API_THEMES_SESSIONDESTROY;
|
|
portMessageIn.portMessage.u1.s1.DataLength = sizeof(API_THEMES);
|
|
portMessageIn.portMessage.u1.s1.TotalLength = static_cast<CSHORT>(sizeof(THEMESAPI_PORT_MESSAGE));
|
|
status = NtRequestWaitReplyPort(s_hPort,
|
|
&portMessageIn.portMessage,
|
|
&portMessageOut.portMessage);
|
|
if (NT_SUCCESS(status))
|
|
{
|
|
status = portMessageOut.apiThemes.apiGeneric.status;
|
|
}
|
|
if (s_hModuleUxTheme != NULL)
|
|
{
|
|
TBOOL(FreeLibrary(s_hModuleUxTheme));
|
|
s_hModuleUxTheme = NULL;
|
|
}
|
|
}
|
|
return(status);
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// CThemeServerClient::ReestablishConnection
|
|
//
|
|
// Arguments: <none>
|
|
//
|
|
// Returns: NTSTATUS
|
|
//
|
|
// Purpose: Reconnects to theme server. If the reconnection is established
|
|
// the re-create the session data. This will not correct any
|
|
// disconnected ports that some clients may have but because this
|
|
// is called in winlogon it re-establish this correctly for
|
|
// session 0 in all cases.
|
|
//
|
|
// UnregisterUserApiHook must be called to clear any left over
|
|
// registrations from a server that died. Then go ahead and
|
|
// re-initialize the environment anyway.
|
|
//
|
|
// History: 2000-11-17 vtan created
|
|
// --------------------------------------------------------------------------
|
|
|
|
NTSTATUS CThemeServerClient::ReestablishConnection (void)
|
|
|
|
{
|
|
NTSTATUS status;
|
|
|
|
ReleaseHandle(s_hPort);
|
|
status = s_pThemeManagerAPIServer->ConnectToServer(&s_hPort);
|
|
if (NT_SUCCESS(status))
|
|
{
|
|
status = SessionCreate();
|
|
if (NT_SUCCESS(status))
|
|
{
|
|
(BOOL)UnregisterUserApiHook();
|
|
THR(ReestablishServerConnection());
|
|
}
|
|
}
|
|
return(status);
|
|
}
|
|
|
|
// --------------------------------------------------------------------------
|
|
// CThemeServerClient::CB_ServiceStart
|
|
//
|
|
// Arguments: pParameter = User parameter.
|
|
// TimerOrWaitFired = Timer or wait fired.
|
|
//
|
|
// Returns: <none>
|
|
//
|
|
// Purpose: Callback called when the theme server ready event is signaled.
|
|
// This indicates that the service was demand started or
|
|
// restarted in the event of failure.
|
|
//
|
|
// History: 2000-11-29 vtan created
|
|
// --------------------------------------------------------------------------
|
|
|
|
void CALLBACK CThemeServerClient::CB_ServiceStart (void *pParameter, BOOLEAN TimerOrWaitFired)
|
|
|
|
{
|
|
UNREFERENCED_PARAMETER(pParameter);
|
|
UNREFERENCED_PARAMETER(TimerOrWaitFired);
|
|
|
|
NTSTATUS status = STATUS_NO_MEMORY;
|
|
|
|
if (s_pLock != NULL)
|
|
{
|
|
CSingleThreadedExecution lock(*s_pLock);
|
|
|
|
// If there is a connection ping it.
|
|
|
|
if (s_hPort != NULL)
|
|
{
|
|
THEMESAPI_PORT_MESSAGE portMessageIn, portMessageOut;
|
|
|
|
ZeroMemory(&portMessageIn, sizeof(portMessageIn));
|
|
ZeroMemory(&portMessageOut, sizeof(portMessageOut));
|
|
portMessageIn.apiThemes.apiGeneric.ulAPINumber = API_THEMES_PING;
|
|
portMessageIn.portMessage.u1.s1.DataLength = sizeof(API_THEMES);
|
|
portMessageIn.portMessage.u1.s1.TotalLength = static_cast<CSHORT>(sizeof(THEMESAPI_PORT_MESSAGE));
|
|
status = NtRequestWaitReplyPort(s_hPort,
|
|
&portMessageIn.portMessage,
|
|
&portMessageOut.portMessage);
|
|
if (NT_SUCCESS(status))
|
|
{
|
|
status = portMessageOut.apiThemes.apiGeneric.status;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
status = STATUS_PORT_DISCONNECTED;
|
|
}
|
|
if (STATUS_PORT_DISCONNECTED == status)
|
|
{
|
|
HDESK hDeskCurrent, hDeskInput;
|
|
|
|
// Set this thread's desktop to the input desktop so
|
|
// that the theme change can be broadcast to the input
|
|
// desktop. This is Default in most cases where a logged
|
|
// on user is active but in the non-logged on user case
|
|
// this will be Winlogon. Restore the thread's desktop
|
|
// when done.
|
|
|
|
TSTATUS(ReestablishConnection());
|
|
hDeskCurrent = hDeskInput = NULL;
|
|
if (s_hToken != NULL)
|
|
{
|
|
hDeskCurrent = GetThreadDesktop(GetCurrentThreadId());
|
|
hDeskInput = OpenInputDesktop(0, FALSE, MAXIMUM_ALLOWED);
|
|
if ((hDeskCurrent != NULL) && (hDeskInput != NULL))
|
|
{
|
|
TBOOL(SetThreadDesktop(hDeskInput));
|
|
}
|
|
if (NT_SUCCESS(CImpersonation::ImpersonateUser(GetCurrentThread(), s_hToken)))
|
|
{
|
|
TSTATUS(InformServerUserLogon(s_hToken));
|
|
}
|
|
if ((hDeskCurrent != NULL) && (hDeskInput != NULL))
|
|
{
|
|
SetThreadDesktop(hDeskCurrent);
|
|
(BOOL)CloseDesktop(hDeskInput);
|
|
}
|
|
TBOOL(RevertToSelf());
|
|
// Not much we can do if RevertToSelf() fails. We probably failed the ImpersonateUser() call above,
|
|
// meaning we didn't do actual work.
|
|
}
|
|
else
|
|
{
|
|
THR(InitUserRegistry());
|
|
THR(InitUserTheme(FALSE));
|
|
}
|
|
}
|
|
|
|
// Reset the event here and now.
|
|
|
|
TBOOL(ResetEvent(s_hEvent));
|
|
|
|
// Unregister the original wait (it only executes once anyway). This
|
|
// call will return a failure code with the callback in progress.
|
|
// Ignore this error. The thread pool will clean up the wait.
|
|
|
|
(BOOL)UnregisterWait(s_hWaitObject);
|
|
|
|
// Reregister the wait as execute once only again waiting for
|
|
// the next time the event is signaled.
|
|
|
|
TBOOL(RegisterWaitForSingleObject(&s_hWaitObject,
|
|
s_hEvent,
|
|
CB_ServiceStart,
|
|
NULL,
|
|
INFINITE,
|
|
WT_EXECUTEDEFAULT | WT_EXECUTEONLYONCE));
|
|
}
|
|
}
|
|
|