[WIN32CSR/CSRSS]: Implement the Sound Sentry CSRSS API. Obviously won't work until a real winsrv.dll exists (and its job will be to call NtUserSoundSentry in win32k.sys).

svn path=/trunk/; revision=54357

reactos/subsystems/win32/csrss/win32csr/dllmain.c

@@ -91,6 +91,7 @@ static CSRSS_API_DEFINITION Win32CsrApiDefinitions[] =
     CSRSS_DEFINE_API(SET_HISTORY_INFO,             CsrSetHistoryInfo),
     CSRSS_DEFINE_API(GET_TEMP_FILE,                CsrGetTempFile),
     CSRSS_DEFINE_API(DEFINE_DOS_DEVICE,            CsrDefineDosDevice),
+    CSRSS_DEFINE_API(SOUND_SENTRY,                 CsrSoundSentry),
     { 0, 0, NULL }
 };
 

reactos/subsystems/win32/csrss/win32csr/file.c

@@ -16,12 +16,58 @@
 
 /* GLOBALS *******************************************************************/
 
+typedef BOOL (WINAPI *PUSER_SOUND_SENTRY)(VOID);
+BOOL
+WINAPI
+FirstSoundSentry(VOID);
+
 UINT CsrGetTempFileUnique;
 LIST_ENTRY DosDeviceHistory;
 RTL_CRITICAL_SECTION Win32CsrDefineDosDeviceCritSec;
+PUSER_SOUND_SENTRY _UserSoundSentry = FirstSoundSentry;
 
 /* FUNCTIONS *****************************************************************/
 
+BOOL
+WINAPI
+FailSoundSentry(VOID)
+{
+    /* In case the function can't be found/is unimplemented */
+    return FALSE;
+}
+
+BOOL
+WINAPI
+FirstSoundSentry(VOID)
+{
+    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();
+}
+
+CSR_API(CsrSoundSentry)
+{
+    /* Call the API and see if it suceeds */
+    return _UserSoundSentry() ? STATUS_SUCCESS : STATUS_ACCESS_DENIED;
+}
+
 CSR_API(CsrGetTempFile)
 {
     DPRINT("CsrGetTempFile entered\n");

reactos/subsystems/win32/csrss/win32csr/w32csr.h

@@ -5,7 +5,7 @@
 #include <ndk/mmtypes.h>
 #include <ndk/mmfuncs.h>
 #include <ndk/obfuncs.h>
-
+#include <ndk/umfuncs.h>
 #include <psapi.h>
 
 /* External Winlogon Header */

reactos/subsystems/win32/csrss/win32csr/win32csr.h

@@ -75,5 +75,6 @@ CSR_API(CsrExitReactos);
 CSR_API(CsrSetLogonNotifyWindow);
 CSR_API(CsrRegisterLogonProcess);
 
+CSR_API(CsrSoundSentry);
 
 /* EOF */