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dmusic: Simplify ParseDescriptor by checking DLS header first and exit if it is wrong.

This commit is contained in:
Christian Costa 2012-05-08 22:29:02 +02:00 committed by Alexandre Julliard
parent f9ba99996e
commit 447c97cfbd
1 changed files with 198 additions and 165 deletions
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363
dlls/dmusic/collection.c
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@ -234,177 +234,210 @@ static HRESULT WINAPI IDirectMusicCollectionImpl_IDirectMusicObject_SetDescripto
return S_OK;
}
static HRESULT WINAPI IDirectMusicCollectionImpl_IDirectMusicObject_ParseDescriptor(LPDIRECTMUSICOBJECT iface, LPSTREAM pStream, LPDMUS_OBJECTDESC pDesc)
static HRESULT read_from_stream(IStream *stream, void *data, ULONG size)
{
ICOM_THIS_MULTI(IDirectMusicCollectionImpl, ObjectVtbl, iface);
DMUS_PRIVATE_CHUNK Chunk;
DWORD StreamSize, StreamCount, ListSize[1], ListCount[1];
LARGE_INTEGER liMove; /* used when skipping chunks */
ULONG read;
HRESULT hr;
TRACE("(%p, %p, %p)\n", This, pStream, pDesc);
hr = IStream_Read(stream, data, size, &read);
if (FAILED(hr)) {
TRACE("IStream_Read failed: %08x\n", hr);
return hr;
}
if (read < size) {
TRACE("Didn't read full chunk: %u < %u\n", read, size);
return E_FAIL;
}
/* FIXME: should this be determined from stream? */
pDesc->dwValidData |= DMUS_OBJ_CLASS;
pDesc->guidClass = CLSID_DirectMusicCollection;
return S_OK;
}
IStream_Read (pStream, &Chunk, sizeof(FOURCC)+sizeof(DWORD), NULL);
TRACE_(dmfile)(": %s chunk (size = 0x%04x)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
switch (Chunk.fccID) {
case FOURCC_RIFF: {
IStream_Read (pStream, &Chunk.fccID, sizeof(FOURCC), NULL);
TRACE_(dmfile)(": RIFF chunk of type %s", debugstr_fourcc(Chunk.fccID));
StreamSize = Chunk.dwSize - sizeof(FOURCC);
StreamCount = 0;
if (Chunk.fccID == mmioFOURCC('D','L','S',' ')) {
TRACE_(dmfile)(": collection form\n");
do {
IStream_Read (pStream, &Chunk, sizeof(FOURCC)+sizeof(DWORD), NULL);
StreamCount += sizeof(FOURCC) + sizeof(DWORD) + Chunk.dwSize;
TRACE_(dmfile)(": %s chunk (size = 0x%04x)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
switch (Chunk.fccID) {
case FOURCC_DLID: {
TRACE_(dmfile)(": GUID chunk\n");
pDesc->dwValidData |= DMUS_OBJ_OBJECT;
IStream_Read (pStream, &pDesc->guidObject, Chunk.dwSize, NULL);
break;
}
case DMUS_FOURCC_VERSION_CHUNK: {
TRACE_(dmfile)(": version chunk\n");
pDesc->dwValidData |= DMUS_OBJ_VERSION;
IStream_Read (pStream, &pDesc->vVersion, Chunk.dwSize, NULL);
break;
}
case DMUS_FOURCC_CATEGORY_CHUNK: {
TRACE_(dmfile)(": category chunk\n");
pDesc->dwValidData |= DMUS_OBJ_CATEGORY;
IStream_Read (pStream, pDesc->wszCategory, Chunk.dwSize, NULL);
break;
}
case FOURCC_LIST: {
IStream_Read (pStream, &Chunk.fccID, sizeof(FOURCC), NULL);
TRACE_(dmfile)(": LIST chunk of type %s", debugstr_fourcc(Chunk.fccID));
ListSize[0] = Chunk.dwSize - sizeof(FOURCC);
ListCount[0] = 0;
switch (Chunk.fccID) {
/* pure INFO list, such can be found in dls collections */
case mmioFOURCC('I','N','F','O'): {
TRACE_(dmfile)(": INFO list\n");
do {
IStream_Read (pStream, &Chunk, sizeof(FOURCC)+sizeof(DWORD), NULL);
ListCount[0] += sizeof(FOURCC) + sizeof(DWORD) + Chunk.dwSize;
TRACE_(dmfile)(": %s chunk (size = 0x%04x)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
switch (Chunk.fccID) {
case mmioFOURCC('I','N','A','M'):{
CHAR szName[DMUS_MAX_NAME];
TRACE_(dmfile)(": name chunk\n");
pDesc->dwValidData |= DMUS_OBJ_NAME;
IStream_Read (pStream, szName, Chunk.dwSize, NULL);
MultiByteToWideChar (CP_ACP, 0, szName, -1, pDesc->wszName, DMUS_MAX_NAME);
if (even_or_odd(Chunk.dwSize)) {
ListCount[0] ++;
liMove.QuadPart = 1;
IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL);
}
break;
}
case mmioFOURCC('I','A','R','T'): {
TRACE_(dmfile)(": artist chunk (ignored)\n");
if (even_or_odd(Chunk.dwSize)) {
ListCount[0] ++;
Chunk.dwSize++;
}
liMove.QuadPart = Chunk.dwSize;
IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL);
break;
}
case mmioFOURCC('I','C','O','P'): {
TRACE_(dmfile)(": copyright chunk (ignored)\n");
if (even_or_odd(Chunk.dwSize)) {
ListCount[0] ++;
Chunk.dwSize++;
}
liMove.QuadPart = Chunk.dwSize;
IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL);
break;
}
case mmioFOURCC('I','S','B','J'): {
TRACE_(dmfile)(": subject chunk (ignored)\n");
if (even_or_odd(Chunk.dwSize)) {
ListCount[0] ++;
Chunk.dwSize++;
}
liMove.QuadPart = Chunk.dwSize;
IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL);
break;
}
case mmioFOURCC('I','C','M','T'): {
TRACE_(dmfile)(": comment chunk (ignored)\n");
if (even_or_odd(Chunk.dwSize)) {
ListCount[0] ++;
Chunk.dwSize++;
}
liMove.QuadPart = Chunk.dwSize;
IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL);
break;
}
default: {
TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
if (even_or_odd(Chunk.dwSize)) {
ListCount[0] ++;
Chunk.dwSize++;
}
liMove.QuadPart = Chunk.dwSize;
IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL);
break;
}
}
TRACE_(dmfile)(": ListCount[0] = %d < ListSize[0] = %d\n", ListCount[0], ListSize[0]);
} while (ListCount[0] < ListSize[0]);
break;
}
default: {
TRACE_(dmfile)(": unknown (skipping)\n");
liMove.QuadPart = Chunk.dwSize - sizeof(FOURCC);
IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL);
break;
}
}
break;
}
default: {
TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
liMove.QuadPart = Chunk.dwSize;
IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL);
break;
}
}
TRACE_(dmfile)(": StreamCount[0] = %d < StreamSize[0] = %d\n", StreamCount, StreamSize);
} while (StreamCount < StreamSize);
} else {
TRACE_(dmfile)(": unexpected chunk; loading failed)\n");
liMove.QuadPart = StreamSize;
IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL); /* skip the rest of the chunk */
return E_FAIL;
}
TRACE_(dmfile)(": reading finished\n");
break;
}
default: {
TRACE_(dmfile)(": unexpected chunk; loading failed)\n");
liMove.QuadPart = Chunk.dwSize;
IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL); /* skip the rest of the chunk */
return DMUS_E_INVALIDFILE;
}
}
static HRESULT WINAPI IDirectMusicCollectionImpl_IDirectMusicObject_ParseDescriptor(LPDIRECTMUSICOBJECT iface, LPSTREAM stream, LPDMUS_OBJECTDESC desc)
{
ICOM_THIS_MULTI(IDirectMusicCollectionImpl, ObjectVtbl, iface);
DMUS_PRIVATE_CHUNK chunk;
DWORD StreamSize, StreamCount, ListSize[1], ListCount[1];
LARGE_INTEGER liMove; /* used when skipping chunks */
HRESULT hr;
if (TRACE_ON(dmusic))
{
TRACE("Returning descriptor:\n");
dump_DMUS_OBJECTDESC(pDesc);
}
TRACE("(%p)->(%p, %p)\n", This, stream, desc);
return S_OK;
/* FIXME: should this be determined from stream? */
desc->dwValidData |= DMUS_OBJ_CLASS;
desc->guidClass = CLSID_DirectMusicCollection;
hr = read_from_stream(stream, &chunk, sizeof(FOURCC) + sizeof(DWORD));
if (FAILED(hr))
return hr;
TRACE_(dmfile)(": %s chunk (size = 0x%04x)", debugstr_fourcc(chunk.fccID), chunk.dwSize);
if (chunk.fccID != FOURCC_RIFF) {
TRACE_(dmfile)(": unexpected chunk; loading failed)\n");
liMove.QuadPart = chunk.dwSize;
IStream_Seek(stream, liMove, STREAM_SEEK_CUR, NULL); /* skip the rest of the chunk */
return DMUS_E_INVALIDFILE;
}
hr = read_from_stream(stream, &chunk.fccID, sizeof(FOURCC));
if (FAILED(hr))
return hr;
TRACE_(dmfile)(": RIFF chunk of type %s", debugstr_fourcc(chunk.fccID));
StreamSize = chunk.dwSize - sizeof(FOURCC);
if (chunk.fccID != mmioFOURCC('D','L','S',' ')) {
TRACE_(dmfile)(": unexpected chunk; loading failed)\n");
liMove.QuadPart = StreamSize;
IStream_Seek(stream, liMove, STREAM_SEEK_CUR, NULL); /* skip the rest of the chunk */
return E_FAIL;
}
StreamCount = 0;
TRACE_(dmfile)(": collection form\n");
do {
hr = read_from_stream(stream, &chunk, sizeof(FOURCC) + sizeof(DWORD));
if (FAILED(hr))
return hr;
StreamCount += sizeof(FOURCC) + sizeof(DWORD) + chunk.dwSize;
TRACE_(dmfile)(": %s chunk (size = 0x%04x)", debugstr_fourcc(chunk.fccID), chunk.dwSize);
switch (chunk.fccID) {
case FOURCC_DLID:
TRACE_(dmfile)(": GUID chunk\n");
desc->dwValidData |= DMUS_OBJ_OBJECT;
hr = read_from_stream(stream, &desc->guidObject, chunk.dwSize);
if (FAILED(hr))
return hr;
break;
case DMUS_FOURCC_VERSION_CHUNK:
TRACE_(dmfile)(": version chunk\n");
desc->dwValidData |= DMUS_OBJ_VERSION;
hr = read_from_stream(stream, &desc->vVersion, chunk.dwSize);
if (FAILED(hr))
return hr;
break;
case DMUS_FOURCC_CATEGORY_CHUNK:
TRACE_(dmfile)(": category chunk\n");
desc->dwValidData |= DMUS_OBJ_CATEGORY;
hr = read_from_stream(stream, desc->wszCategory, chunk.dwSize);
if (FAILED(hr))
return hr;
break;
case FOURCC_LIST:
hr = read_from_stream(stream, &chunk.fccID, sizeof(FOURCC));
if (FAILED(hr))
return hr;
TRACE_(dmfile)(": LIST chunk of type %s", debugstr_fourcc(chunk.fccID));
ListSize[0] = chunk.dwSize - sizeof(FOURCC);
ListCount[0] = 0;
switch (chunk.fccID) {
/* pure INFO list, such can be found in dls collections */
case mmioFOURCC('I','N','F','O'):
TRACE_(dmfile)(": INFO list\n");
do {
hr = read_from_stream(stream, &chunk, sizeof(FOURCC) + sizeof(DWORD));
if (FAILED(hr))
return hr;
ListCount[0] += sizeof(FOURCC) + sizeof(DWORD) + chunk.dwSize;
TRACE_(dmfile)(": %s chunk (size = 0x%04x)", debugstr_fourcc(chunk.fccID), chunk.dwSize);
switch (chunk.fccID) {
case mmioFOURCC('I','N','A','M'): {
CHAR szName[DMUS_MAX_NAME];
TRACE_(dmfile)(": name chunk\n");
desc->dwValidData |= DMUS_OBJ_NAME;
hr = read_from_stream(stream, szName, chunk.dwSize);
if (FAILED(hr))
return hr;
MultiByteToWideChar (CP_ACP, 0, szName, -1, desc->wszName, DMUS_MAX_NAME);
if (even_or_odd(chunk.dwSize)) {
ListCount[0]++;
liMove.QuadPart = 1;
IStream_Seek(stream, liMove, STREAM_SEEK_CUR, NULL);
}
break;
}
case mmioFOURCC('I','A','R','T'):
TRACE_(dmfile)(": artist chunk (ignored)\n");
if (even_or_odd(chunk.dwSize)) {
ListCount[0]++;
chunk.dwSize++;
}
liMove.QuadPart = chunk.dwSize;
IStream_Seek(stream, liMove, STREAM_SEEK_CUR, NULL);
break;
case mmioFOURCC('I','C','O','P'):
TRACE_(dmfile)(": copyright chunk (ignored)\n");
if (even_or_odd(chunk.dwSize)) {
ListCount[0]++;
chunk.dwSize++;
}
liMove.QuadPart = chunk.dwSize;
IStream_Seek(stream, liMove, STREAM_SEEK_CUR, NULL);
break;
case mmioFOURCC('I','S','B','J'):
TRACE_(dmfile)(": subject chunk (ignored)\n");
if (even_or_odd(chunk.dwSize)) {
ListCount[0]++;
chunk.dwSize++;
}
liMove.QuadPart = chunk.dwSize;
IStream_Seek(stream, liMove, STREAM_SEEK_CUR, NULL);
break;
case mmioFOURCC('I','C','M','T'):
TRACE_(dmfile)(": comment chunk (ignored)\n");
if (even_or_odd(chunk.dwSize)) {
ListCount[0]++;
chunk.dwSize++;
liMove.QuadPart = chunk.dwSize;
IStream_Seek(stream, liMove, STREAM_SEEK_CUR, NULL);
break;
}
default:
TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
if (even_or_odd(chunk.dwSize)) {
ListCount[0] ++;
chunk.dwSize++;
}
liMove.QuadPart = chunk.dwSize;
IStream_Seek(stream, liMove, STREAM_SEEK_CUR, NULL);
break;
}
TRACE_(dmfile)(": ListCount[0] = %d < ListSize[0] = %d\n", ListCount[0], ListSize[0]);
} while (ListCount[0] < ListSize[0]);
break;
default:
TRACE_(dmfile)(": unknown (skipping)\n");
liMove.QuadPart = chunk.dwSize - sizeof(FOURCC);
IStream_Seek(stream, liMove, STREAM_SEEK_CUR, NULL);
break;
}
break;
default:
TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
liMove.QuadPart = chunk.dwSize;
IStream_Seek(stream, liMove, STREAM_SEEK_CUR, NULL);
break;
}
TRACE_(dmfile)(": StreamCount[0] = %d < StreamSize[0] = %d\n", StreamCount, StreamSize);
} while (StreamCount < StreamSize);
TRACE_(dmfile)(": reading finished\n");
if (TRACE_ON(dmusic)) {
TRACE("Returning descriptor:\n");
dump_DMUS_OBJECTDESC(desc);
}
return S_OK;
}
static const IDirectMusicObjectVtbl DirectMusicCollection_Object_Vtbl = {