sndsntry.c File Reference

#include "basesrv.h"
#include <debug.h>

Include dependency graph for sndsntry.c:

Go to the source code of this file.

Macros
#define	NDEBUG

Typedefs
typedef BOOL(NTAPI *	PUSER_SOUND_SENTRY) (VOID)

Functions
BOOL NTAPI	FirstSoundSentry (VOID)
BOOL NTAPI	FailSoundSentry (VOID)
	CSR_API (BaseSrvSoundSentryNotification)

Variables
static PUSER_SOUND_SENTRY	_UserSoundSentry = FirstSoundSentry

Macro Definition Documentation

NDEBUG

#define NDEBUG

Definition at line 13 of file sndsntry.c.

Typedef Documentation

PUSER_SOUND_SENTRY

typedef BOOL(NTAPI * PUSER_SOUND_SENTRY) (VOID)

Definition at line 18 of file sndsntry.c.

Function Documentation

CSR_API()

CSR_API

(

BaseSrvSoundSentryNotification

)

Definition at line 61 of file sndsntry.c.

{
    /* Call the API and see if it succeeds */
    return (_UserSoundSentry() ? STATUS_SUCCESS : STATUS_ACCESS_DENIED);
}

FailSoundSentry()

BOOL NTAPI FailSoundSentry

(

VOID

)

Definition at line 27 of file sndsntry.c.

{
    /* In case the function can't be found/is unimplemented */
    return FALSE;
}

Referenced by FirstSoundSentry().

FirstSoundSentry()

BOOL NTAPI FirstSoundSentry

(

VOID

)

Definition at line 35 of file sndsntry.c.

{
    UNICODE_STRING DllString = RTL_CONSTANT_STRING(L"winsrv");
    STRING FuncString = RTL_CONSTANT_STRING("_UserSoundSentry");
    HANDLE DllHandle;
    NTSTATUS Status;
    PUSER_SOUND_SENTRY NewSoundSentry = FailSoundSentry;
 
    /* Load winsrv manually */
    Status = LdrGetDllHandle(NULL, NULL, &DllString, &DllHandle);
    if (NT_SUCCESS(Status))
    {
        /* If it was found, get SoundSentry export */
        Status = LdrGetProcedureAddress(DllHandle,
                                        &FuncString,
                                        0,
                                        (PVOID*)&NewSoundSentry);
    }
 
    /* Set it as the callback for the future, and call it */
    _UserSoundSentry = NewSoundSentry;
    return _UserSoundSentry();
}

Variable Documentation

_UserSoundSentry

PUSER_SOUND_SENTRY _UserSoundSentry = FirstSoundSentry

static

Definition at line 21 of file sndsntry.c.

Referenced by CSR_API(), and FirstSoundSentry().