67 lines
1.6 KiB
Python
67 lines
1.6 KiB
Python
try:
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import zlib
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import io
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except ImportError:
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print("SKIP")
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raise SystemExit
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try:
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zlib.decompIO
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except AttributeError:
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print("SKIP")
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raise SystemExit
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# gzip bitstream
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buf = io.BytesIO(
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b"\x1f\x8b\x08\x08\x99\x0c\xe5W\x00\x03hello\x00\xcbH\xcd\xc9\xc9\x07\x00\x86\xa6\x106\x05\x00\x00\x00"
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)
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inp = zlib.DecompIO(buf, 16 + 8)
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print(buf.seek(0, 1))
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print(inp.read(1))
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print(buf.seek(0, 1))
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print(inp.read(2))
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print(inp.read())
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print(buf.seek(0, 1))
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print(inp.read(1))
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print(inp.read())
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print(buf.seek(0, 1))
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# Check FHCRC field
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buf = io.BytesIO(
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b"\x1f\x8b\x08\x02\x99\x0c\xe5W\x00\x03\x00\x00\xcbH\xcd\xc9\xc9\x07\x00\x86\xa6\x106\x05\x00\x00\x00"
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)
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inp = zlib.DecompIO(buf, 16 + 8)
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print(inp.read())
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# Check FEXTRA field
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buf = io.BytesIO(
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b"\x1f\x8b\x08\x04\x99\x0c\xe5W\x00\x03\x01\x00X\xcbH\xcd\xc9\xc9\x07\x00\x86\xa6\x106\x05\x00\x00\x00"
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)
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inp = zlib.DecompIO(buf, 16 + 8)
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print(inp.read())
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# broken header
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buf = io.BytesIO(
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b"\x1f\x8c\x08\x08\x99\x0c\xe5W\x00\x03hello\x00\xcbH\xcd\xc9\xc9\x07\x00\x86\xa6\x106\x05\x00\x00\x00"
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)
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try:
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inp = zlib.DecompIO(buf, 16 + 8)
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except ValueError:
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print("ValueError")
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# broken crc32
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buf = io.BytesIO(
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b"\x1f\x8b\x08\x08\x99\x0c\xe5W\x00\x03hello\x00\xcbH\xcd\xc9\xc9\x07\x00\x86\xa7\x106\x05\x00\x00\x00"
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)
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inp = zlib.DecompIO(buf, 16 + 8)
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try:
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inp.read(6)
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except OSError as e:
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print(repr(e))
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# broken uncompressed size - not checked so far
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# buf = io.BytesIO(b'\x1f\x8b\x08\x08\x99\x0c\xe5W\x00\x03hello\x00\xcbH\xcd\xc9\xc9\x07\x00\x86\xa6\x106\x06\x00\x00\x00')
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# inp = zlib.DecompIO(buf, 16 + 8)
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# inp.read(6)
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