Techwizz/EQ2EMu
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Deflate can cause a larger packet to be created overflowing the data stream

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This commit is contained in:
Image 2020-04-12 19:56:59 -04:00
parent 1d00919196
commit d7340614c4
1 changed files with 4 additions and 3 deletions

7
EQ2/source/common/EQStream.cpp
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@ -572,15 +572,16 @@ int8 EQStream::EQ2_Compress(EQ2Packet* app, int8 offset){
#endif
uchar* pDataPtr = app->pBuffer + offset;
uchar* deflate_buff = new uchar[app->size];
int xpandSize = app->size * 2;
uchar* deflate_buff = new uchar[xpandSize];
MCompressData.lock();
stream.next_in = pDataPtr;
stream.avail_in = app->size - offset;
stream.next_out = deflate_buff;
stream.avail_out = app->size;
stream.avail_out = xpandSize;
deflate(&stream, Z_SYNC_FLUSH);
int32 newsize = app->size - stream.avail_out;
int32 newsize = xpandSize - stream.avail_out;
safe_delete_array(app->pBuffer);
app->size = newsize + offset;
app->pBuffer = new uchar[app->size];