Michael Stefaniuc : dmime: Don't crash when DMSegment loads a MIDI file.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: c8e493cb0c16ef28d9109e3b14f63d9587a8f013
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=c8e493cb0c16ef28d9109e3b1...

Author: Michael Stefaniuc 
Date:   Mon Jul 16 23:39:01 2018 +0200

dmime: Don't crash when DMSegment loads a MIDI file.

Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=31829
Signed-off-by: Michael Stefaniuc 
Signed-off-by: Alexandre Julliard

---

dlls/dmime/segment.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/dlls/dmime/segment.c b/dlls/dmime/segment.c
index dc46069..9a9872b 100644
--- a/dlls/dmime/segment.c
+++ b/dlls/dmime/segment.c
@@ -790,10 +790,16 @@ static HRESULT WINAPI seg_IPersistStream_Load(IPersistStream *iface, IStream *st
     if (!stream)
         return E_POINTER;

-    if (stream_get_chunk(stream, &riff) != S_OK || riff.id != FOURCC_RIFF)
+    if (stream_get_chunk(stream, &riff) != S_OK ||
+            (riff.id != FOURCC_RIFF && riff.id != mmioFOURCC('M','T','h','d')))
         return DMUS_E_UNSUPPORTED_STREAM;
-
     stream_reset_chunk_start(stream, &riff);
+
+    if (riff.id == mmioFOURCC('M','T','h','d')) {
+        FIXME("MIDI file loading not supported\n");
+        return S_OK;
+    }
+
     hr = IDirectMusicObject_ParseDescriptor(&This->dmobj.IDirectMusicObject_iface, stream,
             &This->dmobj.desc);
     if (FAILED(hr))