unpapawify.in

#!/usr/bin/python3

# This file is part of papaw.
#
# Copyright (c) 2019, 2020 Dima Krasner
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.

import subprocess
import sys
import struct

with open(sys.argv[1], "rb") as infp:
    data = infp.read()
    osize, size = struct.unpack(">LL", data[-8:])

    if osize == size:
        with open(sys.argv[2], "wb") as fp:
            fp.write(data[-(size + 8):-8])
    else:
        xz = subprocess.Popen([@DECOMPRESSION_CMD@],
                              stdin=subprocess.PIPE,
                              stdout=open(sys.argv[2], "wb"))
        obfuscated = data[-(size + 8):-8]
        @DEOBFUSCATION@
        xz.stdin.write(deobfuscated)
        xz.stdin.close()
        xz.wait()