194 lines
4.0 KiB
C
194 lines
4.0 KiB
C
/*++
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Copyright (c) 1990 Microsoft Corporation
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Module Name:
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srvacces.c
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Abstract:
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This file contains the Access Pack support routines
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Author:
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Gregory Wilson (gregoryw) 28-Jul-1993
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Revision History:
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--*/
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#include "basesrv.h"
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BOOL
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InternalSoundSentry(
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UINT uVideoMode
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);
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BOOL (*_UserSoundSentry)(
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UINT uVideoMode
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) = InternalSoundSentry;
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BOOL
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InternalSoundSentry(
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UINT uVideoMode
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)
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{
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STRING ProcedureName;
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ANSI_STRING DllName;
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UNICODE_STRING DllName_U;
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HANDLE UserServerModuleHandle;
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NTSTATUS Status;
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BOOL (*pfnSoundSentryProc)(UINT) = NULL;
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static BOOL fInit = FALSE;
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if (fInit == TRUE) {
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//
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// If the real user soundsentry routine cannot be found, deny access
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//
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return( FALSE );
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}
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fInit = TRUE;
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RtlInitAnsiString(&DllName, "winsrv");
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RtlAnsiStringToUnicodeString(&DllName_U, &DllName, TRUE);
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Status = LdrGetDllHandle(
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UNICODE_NULL,
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NULL,
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&DllName_U,
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(PVOID *)&UserServerModuleHandle
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);
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RtlFreeUnicodeString(&DllName_U);
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if ( NT_SUCCESS(Status) ) {
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RtlInitString(&ProcedureName,"_UserSoundSentry");
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Status = LdrGetProcedureAddress(
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(PVOID)UserServerModuleHandle,
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&ProcedureName,
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0L,
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(PVOID *)&pfnSoundSentryProc
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);
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if ( NT_SUCCESS(Status) ) {
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//
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// We now have the real soundsentry routine
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//
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_UserSoundSentry = pfnSoundSentryProc;
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return( _UserSoundSentry( uVideoMode ) );
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}
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}
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//
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// Deny access
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//
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return( FALSE );
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}
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#ifdef CONSOLESOUNDSENTRY
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BOOL
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InternalConsoleSoundSentry(
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UINT uVideoMode
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);
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BOOL (*_ConsoleSoundSentry)(
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UINT uVideoMode
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) = InternalConsoleSoundSentry;
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BOOL
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InternalConsoleSoundSentry(
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UINT uVideoMode
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)
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{
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STRING ProcedureName;
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ANSI_STRING DllName;
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UNICODE_STRING DllName_U;
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HANDLE ConsoleServerModuleHandle;
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NTSTATUS Status;
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BOOL (*pfnSoundSentryProc)(UINT) = NULL;
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static BOOL fConsoleInit = FALSE;
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if (fConsoleInit == TRUE) {
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//
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// If the real soundsentry routine cannot be found, deny access
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//
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return( FALSE );
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}
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fConsoleInit = TRUE;
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RtlInitAnsiString(&DllName, "winsrv");
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RtlAnsiStringToUnicodeString(&DllName_U, &DllName, TRUE);
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Status = LdrGetDllHandle(
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UNICODE_NULL,
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NULL,
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&DllName_U,
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(PVOID *)&ConsoleServerModuleHandle
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);
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RtlFreeUnicodeString(&DllName_U);
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if ( NT_SUCCESS(Status) ) {
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RtlInitString(&ProcedureName,"_ConsoleSoundSentry");
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Status = LdrGetProcedureAddress(
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(PVOID)ConsoleServerModuleHandle,
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&ProcedureName,
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0L,
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(PVOID *)&pfnSoundSentryProc
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);
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if ( NT_SUCCESS(Status) ) {
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//
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// We now have the real console soundsentry routine
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//
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_ConsoleSoundSentry = pfnSoundSentryProc;
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return( _ConsoleSoundSentry( uVideoMode ) );
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}
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}
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//
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// Deny access
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//
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return( FALSE );
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}
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#endif
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ULONG
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BaseSrvSoundSentryNotification(
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IN OUT PCSR_API_MSG m,
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IN OUT PCSR_REPLY_STATUS ReplyStatus
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)
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{
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PBASE_SOUNDSENTRY_NOTIFICATION_MSG a =
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(PBASE_SOUNDSENTRY_NOTIFICATION_MSG)&m->u.ApiMessageData;
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BOOL SoundSentryStatus;
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//
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// The possible values for a->VideoMode are:
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// 0 : windows mode
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// 1 : full screen mode
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// 2 : full screen graphics mode
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//
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SoundSentryStatus = _UserSoundSentry( a->VideoMode );
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if (SoundSentryStatus) {
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return( (ULONG)STATUS_SUCCESS );
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} else {
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return( (ULONG)STATUS_ACCESS_DENIED );
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}
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ReplyStatus; // get rid of unreferenced parameter warning message
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}
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