ntdll: RtlFindActivationContextSectionString should accept a NULL pointer as data.

dlls/kernel32/actctx.c

@@ -227,7 +227,7 @@ BOOL WINAPI FindActCtxSectionStringA(DWORD dwFlags, const GUID* lpExtGuid,
     TRACE("%08x %s %u %s %p\n", dwFlags, debugstr_guid(lpExtGuid),
           ulId, debugstr_a(lpSearchStr), pInfo);
 
-    if (!lpSearchStr)
+    if (!lpSearchStr || !pInfo)
     {
         SetLastError(ERROR_INVALID_PARAMETER);
         return FALSE;
@@ -255,6 +255,12 @@ BOOL WINAPI FindActCtxSectionStringW(DWORD dwFlags, const GUID* lpExtGuid,
     UNICODE_STRING us;
     NTSTATUS status;
 
+    if (!pInfo)
+    {
+        SetLastError(ERROR_INVALID_PARAMETER);
+        return FALSE;
+    }
+
     RtlInitUnicodeString(&us, lpSearchStr);
     if ((status = RtlFindActivationContextSectionString(dwFlags, lpExtGuid, ulId, &us, pInfo)))
     {

dlls/kernel32/tests/actctx.c

@@ -2148,9 +2148,13 @@ static void ntdll_find(ULONG section, const char *string_to_find, BOOL should_fi
             "RtlFindActivationContextSectionString: unexpected status 0x%x\n", ret);
 
     ret = pRtlFindActivationContextSectionString(0, NULL, section, &string_to_findW, NULL);
+    if (todo)
         todo_wine
         ok_(__FILE__, line)(ret == (should_find ? STATUS_SUCCESS : STATUS_SXS_KEY_NOT_FOUND),
             "RtlFindActivationContextSectionString: unexpected status 0x%x\n", ret);
+    else
+        ok_(__FILE__, line)(ret == (should_find ? STATUS_SUCCESS : STATUS_SXS_KEY_NOT_FOUND),
+            "RtlFindActivationContextSectionString: unexpected status 0x%x\n", ret);
 
     pRtlFreeUnicodeString(&string_to_findW);
 }

dlls/ntdll/actctx.c

@@ -3133,6 +3133,8 @@ static NTSTATUS find_dll_redirection(ACTIVATION_CONTEXT* actctx, const UNICODE_S
     index = find_string_index(actctx->dllredirect_section, name);
     if (!index) return STATUS_SXS_KEY_NOT_FOUND;
 
+    if (data)
+    {
         dll = get_dllredirect_data(actctx, index);
 
         data->ulDataFormatVersion = 1;
@@ -3146,6 +3148,7 @@ static NTSTATUS find_dll_redirection(ACTIVATION_CONTEXT* actctx, const UNICODE_S
 
         if (data->cbSize >= FIELD_OFFSET(ACTCTX_SECTION_KEYED_DATA, ulAssemblyRosterIndex) + sizeof(ULONG))
             data->ulAssemblyRosterIndex = index->rosterindex;
+    }
 
     return STATUS_SUCCESS;
 }
@@ -3342,6 +3345,8 @@ static NTSTATUS find_window_class(ACTIVATION_CONTEXT* actctx, const UNICODE_STRI
 
     if (!index) return STATUS_SXS_KEY_NOT_FOUND;
 
+    if (data)
+    {
         class = get_wndclass_data(actctx, index);
 
         data->ulDataFormatVersion = 1;
@@ -3356,6 +3361,7 @@ static NTSTATUS find_window_class(ACTIVATION_CONTEXT* actctx, const UNICODE_STRI
 
         if (data->cbSize >= FIELD_OFFSET(ACTCTX_SECTION_KEYED_DATA, ulAssemblyRosterIndex) + sizeof(ULONG))
             data->ulAssemblyRosterIndex = index->rosterindex;
+    }
 
     return STATUS_SUCCESS;
 }
@@ -4397,6 +4403,8 @@ static NTSTATUS find_progid_redirection(ACTIVATION_CONTEXT* actctx, const UNICOD
     index = find_string_index(actctx->progid_section, name);
     if (!index) return STATUS_SXS_KEY_NOT_FOUND;
 
+    if (data)
+    {
         progid = get_progid_data(actctx, index);
 
         data->ulDataFormatVersion = 1;
@@ -4410,6 +4418,7 @@ static NTSTATUS find_progid_redirection(ACTIVATION_CONTEXT* actctx, const UNICOD
 
         if (data->cbSize >= FIELD_OFFSET(ACTCTX_SECTION_KEYED_DATA, ulAssemblyRosterIndex) + sizeof(ULONG))
             data->ulAssemblyRosterIndex = index->rosterindex;
+    }
 
     return STATUS_SUCCESS;
 }
@@ -4441,7 +4450,7 @@ static NTSTATUS find_string(ACTIVATION_CONTEXT* actctx, ULONG section_kind,
 
     if (status != STATUS_SUCCESS) return status;
 
-    if (flags & FIND_ACTCTX_SECTION_KEY_RETURN_HACTCTX)
+    if (data && (flags & FIND_ACTCTX_SECTION_KEY_RETURN_HACTCTX))
     {
         actctx_addref(actctx);
         data->hActCtx = actctx;
@@ -5008,7 +5017,7 @@ NTSTATUS WINAPI RtlFindActivationContextSectionString( ULONG flags, const GUID *
         FIXME("unknown flags %08x\n", flags);
         return STATUS_INVALID_PARAMETER;
     }
-    if (!data || data->cbSize < offsetof(ACTCTX_SECTION_KEYED_DATA, ulAssemblyRosterIndex) ||
+    if ((data && data->cbSize < offsetof(ACTCTX_SECTION_KEYED_DATA, ulAssemblyRosterIndex)) ||
         !section_name || !section_name->Buffer)
     {
         WARN("invalid parameter\n");