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path: root/lib/fstream/uncompress/bzip2.c
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2021-06-25libfstream: guard against potential integer overflowsDavid Oberhollenzer
The differen compressor libraries use differnt integer types to tally the buffer sizes. The libfstream library uses size_t, which may be bigger than the actualy types, potentially causing an overflow if trying to compress to much at once. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2021-06-04Fix: allow concatenated Bzip2 streamsDavid Oberhollenzer
This is a followup to dd4e6ead142e58568aec89d76b0b2e867ee983f2. Basically the same problem occours with Bzip2, but it so far it wasn't possible to find a sampel that reproduces it. Unlike libxz, the libbz2 API does not support concatenated streams by itself and will choke when trying to decompress after the stream end, so this commit adds a workaround to simply initialize the decompressor on-the-fly and tear it down again when and end-of-stream is returned. The end-of-file condition is only set when there actually is no more data to read. Otherwise, the decompressor will be re-initialized in the next round. Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>
2020-09-16Add bzip2 stream compression supportDavid Oberhollenzer
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>