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tools/coredump: add coredump python parser
Signed-off-by: chao an <anchao@xiaomi.com>
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#!/usr/bin/env python3 | ||
############################################################################ | ||
# tools/coredump.py | ||
# | ||
# 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. | ||
# | ||
############################################################################ | ||
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import argparse | ||
import binascii | ||
import os | ||
import struct | ||
import sys | ||
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import lzf | ||
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def decompress(lzffile, outfile): | ||
chunk_number = 1 | ||
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while True: | ||
prefix = lzffile.read(2) | ||
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if len(prefix) == 0: | ||
break | ||
elif prefix != b"ZV": | ||
break | ||
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typ = lzffile.read(1) | ||
clen = struct.unpack(">H", lzffile.read(2))[0] | ||
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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 | ||
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outfile.write(chunk) | ||
chunk_number += 1 | ||
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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 :] | ||
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outfile.write(binascii.unhexlify(line)) | ||
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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.") | ||
args = parser.parse_args() | ||
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def main(): | ||
parse_args() | ||
if not os.path.isfile(args.input): | ||
sys.exit(1) | ||
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tmp = os.path.splitext(args.input)[0] + ".tmp" | ||
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if args.output is None: | ||
args.output = os.path.splitext(args.input)[0] + ".core" | ||
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infile = open(args.input, "r") | ||
tmpfile = open(tmp, "wb+") | ||
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unhexlify(infile, tmpfile) | ||
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infile.close() | ||
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tmpfile.seek(0, 0) | ||
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lzfhdr = tmpfile.read(2) | ||
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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.rename(args.output) | ||
tmpfile.close() | ||
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print("Core file conversion completed: " + args.output) | ||
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if __name__ == "__main__": | ||
main() |