2 # Copyright 2013 The Chromium Authors. All rights reserved.
3 # Use of this source code is governed by a BSD-style license that can be
4 # found in the LICENSE file.
6 """A tool to extract minidumps from dmp crash dumps."""
10 from cgi import parse_multipart
13 def ProcessDump(dump_file, minidump_file):
14 """Extracts the part of the dump file that minidump_stackwalk can read.
16 The dump files generated by the breakpad integration multi-part form data
17 that include the minidump as file attachment.
20 dump_file: the dump file that needs to be processed.
21 minidump_file: the file to write the minidump to.
24 dump = open(dump_file, 'rb')
25 boundary = dump.readline().strip()[2:]
26 data = parse_multipart(dump, {'boundary': boundary})
28 print 'Failed to read dmp file %s' % dump_file
31 if not 'upload_file_minidump' in data:
32 print 'Could not find minidump file in dump.'
35 f = open(minidump_file, 'w')
36 f.write("\r\n".join(data['upload_file_minidump']))
41 if len(sys.argv) != 3:
42 print 'Usage: %s [dmp file] [minidump]' % sys.argv[0]
44 print 'Extracts the minidump stored in the crash dump file'
47 ProcessDump(sys.argv[1], sys.argv[2])
50 if '__main__' == __name__: