[jimtabor] 34814: - Fix crash in callback and disable HCBT_CREATEWND until it is implemented correctly. Hooks seem to be working.

Author: jimtabor
Date: Sat Jul 26 17:06:31 2008
New Revision: 34814

URL: http://svn.reactos.org/svn/reactos?rev=34814&view=rev
Log:
- Fix crash in callback and disable HCBT_CREATEWND until it is implemented correctly.
Hooks seem to be working.

Modified:
    trunk/reactos/subsystems/win32/win32k/ntuser/callback.c
    trunk/reactos/subsystems/win32/win32k/ntuser/hook.c

Modified: trunk/reactos/subsystems/win32/win32k/ntuser/callback.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/win32/win32k/nt…
==============================================================================
--- trunk/reactos/subsystems/win32/win32k/ntuser/callback.c [iso-8859-1] (original)
+++ trunk/reactos/subsystems/win32/win32k/ntuser/callback.c [iso-8859-1] Sat Jul 26
17:06:31 2008
@@ -339,7 +339,7 @@
 {
    ULONG ArgumentLength;
    PVOID Argument;
-   LRESULT Result;
+   LRESULT Result = 0;
    NTSTATUS Status;
    PVOID ResultPointer;
    ULONG ResultLength;
@@ -491,10 +491,21 @@
                                &ResultPointer,
                                &ResultLength);
 
-   /* Simulate old behaviour: copy into our local buffer */
-   Result = *(LRESULT*)ResultPointer;
-
    UserEnterCo();
+
+   _SEH_TRY
+   {
+      ProbeForRead((PVOID)*(LRESULT*)ResultPointer,
+                                   sizeof(LRESULT),
+                                                 1);
+      /* Simulate old behaviour: copy into our local buffer */
+      Result = *(LRESULT*)ResultPointer;
+   }
+   _SEH_HANDLE
+   {
+      Result = 0;
+   }
+   _SEH_END;
 
    IntCbFreeMemory(Argument);
 

Modified: trunk/reactos/subsystems/win32/win32k/ntuser/hook.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/win32/win32k/nt…
==============================================================================
--- trunk/reactos/subsystems/win32/win32k/ntuser/hook.c [iso-8859-1] (original)
+++ trunk/reactos/subsystems/win32/win32k/ntuser/hook.c [iso-8859-1] Sat Jul 26 17:06:31
2008
@@ -413,6 +413,7 @@
 FASTCALL
 co_HOOK_CallHookNext(PHOOK Hook, INT Code, WPARAM wParam, LPARAM lParam)
 {
+   DPRINT("CALLING HOOK %d\n",Hook->HookId);
    return co_IntCallHookProc(Hook->HookId, Code, wParam, lParam, Hook->Proc,
                                   Hook->Ansi, &Hook->ModuleName);
 }
@@ -708,16 +709,18 @@
       }
 
       case WH_CBT:
+         DPRINT1("HOOK WH_CBT!\n");
          switch (Code)
          {
             case HCBT_CREATEWND: // Use Ansi.
-               lResult = co_HOOK_CallHookNext(Hook, Code, wParam, lParam);
+               DPRINT1("HOOK HCBT_CREATEWND\n");
+//               lResult = co_HOOK_CallHookNext(Hook, Code, wParam, lParam);
                break;
 
             case HCBT_MOVESIZE:
             {
                RECT rt;
-
+               DPRINT1("HOOK HCBT_MOVESIZE\n");
                if (lParam)
                {
                   _SEH_TRY
@@ -749,7 +752,7 @@
             case HCBT_ACTIVATE:
             {
                CBTACTIVATESTRUCT CbAs;
-
+               DPRINT1("HOOK HCBT_ACTIVATE\n");
                if (lParam)
                {
                   _SEH_TRY
@@ -781,6 +784,7 @@
                 The rest just use default.
              */
             default:
+               DPRINT1("HOOK HCBT_ %d\n",Code);
                lResult = co_HOOK_CallHookNext(Hook, Code, wParam, lParam);
                break;
          }
@@ -909,6 +913,10 @@
    
    NextObj = IntGetNextHook(HookObj);
    ClientInfo->phkCurrent = NextObj; // Preset next hook from list.
+   if (HookObj->HookId == WH_GETMESSAGE)
+   {
+     DPRINT1(" WH_GETMESSAGE, Hook %x NextHook %x \n", HookObj, NextObj);
+   }
    UserCallNextHookEx( HookObj, Code, wParam, lParam, Ansi);
    UserDereferenceObject(HookObj);