kernel32: Improve parameter validation for WriteConsoleInputW.

dlls/kernel32/console.c

@@ -504,20 +504,32 @@ BOOL WINAPI WriteConsoleInputA( HANDLE handle, const INPUT_RECORD *buffer,
 BOOL WINAPI WriteConsoleInputW( HANDLE handle, const INPUT_RECORD *buffer,
                                 DWORD count, LPDWORD written )
 {
+    DWORD events_written = 0;
     BOOL ret;
 
     TRACE("(%p,%p,%d,%p)\n", handle, buffer, count, written);
 
-    if (written) *written = 0;
+    if (count > 0 && !buffer)
+    {
+        SetLastError(ERROR_INVALID_ACCESS);
+        return FALSE;
+    }
+
     SERVER_START_REQ( write_console_input )
     {
         req->handle = console_handle_unmap(handle);
         wine_server_add_data( req, buffer, count * sizeof(INPUT_RECORD) );
-        if ((ret = !wine_server_call_err( req )) && written)
-            *written = reply->written;
+        if ((ret = !wine_server_call_err( req )))
+            events_written = reply->written;
     }
     SERVER_END_REQ;
 
+    if (written) *written = events_written;
+    else
+    {
+        SetLastError(ERROR_INVALID_ACCESS);
+        ret = FALSE;
+    }
     return ret;
 }
 

dlls/kernel32/tests/console.c

@@ -1221,6 +1221,96 @@ static void test_GetNumberOfConsoleInputEvents(HANDLE input_handle)
     ok(count != 0xdeadbeef, "Expected output count to initialized\n");
 }
 
+static void test_WriteConsoleInputW(HANDLE input_handle)
+{
+    INPUT_RECORD event, temp;
+    MOUSE_EVENT_RECORD mouse_event = { {0, 0}, 0, 0, MOUSE_MOVED };
+    DWORD count;
+    BOOL ret;
+    int i;
+
+    const struct
+    {
+        HANDLE handle;
+        const INPUT_RECORD *buffer;
+        DWORD count;
+        LPDWORD written;
+        DWORD expected_count;
+        DWORD last_error;
+        int win7_crash;
+    } invalid_table[] =
+    {
+        {NULL, NULL, 0, NULL, 0xdeadbeef, ERROR_INVALID_ACCESS, 1},
+        {NULL, NULL, 0, &count, 0, ERROR_INVALID_HANDLE},
+        {NULL, NULL, 1, NULL, 0xdeadbeef, ERROR_INVALID_ACCESS},
+        {NULL, NULL, 1, &count, 0xdeadbeef, ERROR_INVALID_ACCESS},
+        {NULL, &event, 0, NULL, 0xdeadbeef, ERROR_INVALID_ACCESS, 1},
+        {NULL, &event, 0, &count, 0, ERROR_INVALID_HANDLE},
+        {NULL, &event, 1, NULL, 0xdeadbeef, ERROR_INVALID_ACCESS, 1},
+        {NULL, &event, 1, &count, 0, ERROR_INVALID_HANDLE},
+        {INVALID_HANDLE_VALUE, NULL, 0, NULL, 0xdeadbeef, ERROR_INVALID_ACCESS, 1},
+        {INVALID_HANDLE_VALUE, NULL, 0, &count, 0, ERROR_INVALID_HANDLE},
+        {INVALID_HANDLE_VALUE, NULL, 1, NULL, 0xdeadbeef, ERROR_INVALID_ACCESS},
+        {INVALID_HANDLE_VALUE, NULL, 1, &count, 0xdeadbeef, ERROR_INVALID_ACCESS},
+        {INVALID_HANDLE_VALUE, &event, 0, NULL, 0xdeadbeef, ERROR_INVALID_ACCESS, 1},
+        {INVALID_HANDLE_VALUE, &event, 0, &count, 0, ERROR_INVALID_HANDLE},
+        {INVALID_HANDLE_VALUE, &event, 1, NULL, 0xdeadbeef, ERROR_INVALID_ACCESS, 1},
+        {INVALID_HANDLE_VALUE, &event, 1, &count, 0, ERROR_INVALID_HANDLE},
+        {input_handle, NULL, 0, NULL, 0xdeadbeef, ERROR_INVALID_ACCESS, 1},
+        {input_handle, NULL, 1, NULL, 0xdeadbeef, ERROR_INVALID_ACCESS},
+        {input_handle, NULL, 1, &count, 0xdeadbeef, ERROR_INVALID_ACCESS},
+        {input_handle, &event, 0, NULL, 0xdeadbeef, ERROR_INVALID_ACCESS, 1},
+        {input_handle, &event, 1, NULL, 0xdeadbeef, ERROR_INVALID_ACCESS, 1},
+    };
+
+    event.EventType = MOUSE_EVENT;
+    event.Event.MouseEvent = mouse_event;
+
+    for (i = 0; i < sizeof(invalid_table)/sizeof(invalid_table[0]); i++)
+    {
+        if (invalid_table[i].win7_crash)
+            continue;
+
+        SetLastError(0xdeadbeef);
+        if (invalid_table[i].written) count = 0xdeadbeef;
+        ret = WriteConsoleInputW(invalid_table[i].handle,
+                                 invalid_table[i].buffer,
+                                 invalid_table[i].count,
+                                 invalid_table[i].written);
+        ok(!ret, "[%d] Expected WriteConsoleInputW to return FALSE, got %d\n", i, ret);
+        if (invalid_table[i].written)
+        {
+            ok(count == invalid_table[i].expected_count,
+               "[%d] Expected output count to be %u, got %u\n",
+               i, invalid_table[i].expected_count, count);
+        }
+        ok(GetLastError() == invalid_table[i].last_error,
+           "[%d] Expected last error to be %u, got %u\n",
+           i, invalid_table[i].last_error, GetLastError());
+    }
+
+    count = 0xdeadbeef;
+    ret = WriteConsoleInputW(input_handle, NULL, 0, &count);
+    ok(ret == TRUE, "Expected WriteConsoleInputW to return TRUE, got %d\n", ret);
+    ok(count == 0, "Expected count to be 0, got %u\n", count);
+
+    count = 0xdeadbeef;
+    ret = WriteConsoleInputW(input_handle, &event, 0, &count);
+    ok(ret == TRUE, "Expected WriteConsoleInputW to return TRUE, got %d\n", ret);
+    ok(count == 0, "Expected count to be 0, got %u\n", count);
+
+    count = 0xdeadbeef;
+    ret = WriteConsoleInputW(input_handle, &event, 1, &count);
+    ok(ret == TRUE, "Expected WriteConsoleInputW to return TRUE, got %d\n", ret);
+    ok(count == 1, "Expected count to be 1, got %u\n", count);
+
+    /* Discard the queued input event by reading it. */
+    count = 0xdeadbeef;
+    ret = ReadConsoleInputW(input_handle, &temp, 1, &count);
+    ok(ret == TRUE, "Expected ReadConsoleInputW to return TRUE, got %d\n", ret);
+    ok(count == 1, "Expected count to be 1, got %u\n", count);
+}
+
 START_TEST(console)
 {
     HANDLE hConIn, hConOut;
@@ -1275,4 +1365,5 @@ START_TEST(console)
     test_VerifyConsoleIoHandle(hConOut);
     test_GetSetStdHandle();
     test_GetNumberOfConsoleInputEvents(hConIn);
+    test_WriteConsoleInputW(hConIn);
 }