fwunpack.py 文件源码

def searchUnpackRZIP(filename, tempdir=None, blacklist=[], offsets={}, scanenv={}, debug=False):
    hints = {}
    if not 'rzip' in offsets:
        return ([], blacklist, [], hints)
    if offsets['rzip'] == []:
        return ([], blacklist, [], hints)
    if offsets['rzip'][0] != 0:
        return ([], blacklist, [], hints)
    if os.stat(filename).st_size < 10:
        return ([], blacklist, [], hints)
    diroffsets = []
    tags = []
    offset = 0

    rzipfile = open(filename, 'rb')
    rzipfile.seek(0)
    rzipdata = rzipfile.read(10)
    rzipfile.close()

    rzipsize = struct.unpack('>L', rzipdata[6:10])[0]

    blacklistoffset = extractor.inblacklist(offset, blacklist)
    if blacklistoffset != None:
        return (diroffsets, blacklist, tags, hints)

    tmpdir = dirsetup(tempdir, filename, "rzip", 1)
    res = unpackRZIP(filename, offset, rzipsize, tmpdir)
    if res != None:
        rzipdir = res
        diroffsets.append((rzipdir, offset, 0))
        #blacklist.append((offset, offset + unpackrzipsize))
        #if offset == 0:
        #   tags.append("compressed")
        #   tags.append("rzip")
    else:
        ## cleanup
        os.rmdir(tmpdir)

    return (diroffsets, blacklist, tags, hints)