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145#!/usr/bin/env python3
############################################################################
# tools/coredump.py
#
# SPDX-License-Identifier: Apache-2.0
#
# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements. See the NOTICE file distributed with
# this work for additional information regarding copyright ownership. The
# ASF licenses this file to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance with the
# License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
#
############################################################################
import argparse
import base64
import binascii
import os
import struct
import sys
import lzf
def decompress(lzffile, outfile):
chunk_number = 1
while True:
prefix = lzffile.read(2)
if len(prefix) == 0:
break
elif prefix != b"ZV":
break
typ = lzffile.read(1)
clen = struct.unpack(">H", lzffile.read(2))[0]
if typ == b"\x00":
chunk = lzffile.read(clen)
elif typ == b"\x01":
uncompressed_len = struct.unpack(">H", lzffile.read(2))[0]
cdata = lzffile.read(clen)
chunk = lzf.decompress(cdata, uncompressed_len)
else:
return
outfile.write(chunk)
chunk_number += 1
def unhexlify(infile, outfile):
for line in infile.readlines():
line = line.strip()
if line == "":
break
index = line.rfind(" ")
if index > 0:
line = line[index + 1 :]
outfile.write(binascii.unhexlify(line))
def unbase64file(infile, outfile):
input = ""
for line in infile.readlines():
line = line.strip()
if line == "":
break
index = line.rfind(" ")
if index > 0:
line = line[index + 1 :]
input += line
outfile.write(base64.b64decode(input))
def parse_args():
global args
parser = argparse.ArgumentParser(
description=__doc__,
formatter_class=argparse.RawDescriptionHelpFormatter,
allow_abbrev=False,
)
parser.add_argument("input")
parser.add_argument("-o", "--output", help="Output file in hex.")
parser.add_argument(
"--base64",
action="store_true",
default=False,
help="Set when input file is base64 encoded.",
)
args = parser.parse_args()
def main():
parse_args()
if not os.path.isfile(args.input):
sys.exit(1)
tmp = os.path.splitext(args.input)[0] + ".tmp"
if args.output is None:
args.output = os.path.splitext(args.input)[0] + ".core"
infile = open(args.input, "r")
tmpfile = open(tmp, "wb+")
if args.base64:
unbase64file(infile, tmpfile)
else:
unhexlify(infile, tmpfile)
infile.close()
tmpfile.seek(0, 0)
lzfhdr = tmpfile.read(2)
if lzfhdr == b"ZV":
outfile = open(args.output, "wb")
tmpfile.seek(0, 0)
decompress(tmpfile, outfile)
tmpfile.close()
outfile.close()
os.unlink(tmp)
else:
tmpfile.close()
os.rename(tmp, args.output)
print("Core file conversion completed: " + args.output)
if __name__ == "__main__":
main()