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| 1 #!/usr/bin/env python | |
| 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. | |
| 5 | |
| 6 """A tool to extract minidumps from dmp crash dumps.""" | |
| 7 | |
| 8 import os | |
| 9 import sys | |
| 10 from cgi import parse_multipart | |
| 11 | |
| 12 | |
| 13 def ProcessDump(dump_file, minidump_file): | |
| 14 """Extracts the part of the dump file that minidump_stackwalk can read. | |
| 15 | |
| 16 The dump files generated by the breakpad integration multi-part form data | |
| 17 that include the minidump as file attachment. | |
| 18 | |
| 19 Args: | |
| 20 dump_file: the dump file that needs to be processed. | |
| 21 minidump_file: the file to write the minidump to. | |
| 22 """ | |
| 23 try: | |
| 24 dump = open(dump_file, 'rb') | |
| 25 boundary = dump.readline().strip()[2:] | |
| 26 data = parse_multipart(dump, {'boundary': boundary}) | |
| 27 except: | |
| 28 print 'Failed to read dmp file %s' % dump_file | |
| 29 return | |
| 30 | |
| 31 if not 'upload_file_minidump' in data: | |
| 32 print 'Could not find minidump file in dump.' | |
| 33 return | |
| 34 | |
| 35 f = open(minidump_file, 'w') | |
| 36 f.write("\r\n".join(data['upload_file_minidump'])) | |
| 37 f.close() | |
| 38 | |
| 39 | |
| 40 def main(): | |
| 41 if len(sys.argv) != 3: | |
| 42 print 'Usage: %s [dmp file] [minidump]' % sys.argv[0] | |
| 43 print '' | |
| 44 print 'Extracts the minidump stored in the crash dump file' | |
| 45 return 1 | |
| 46 | |
| 47 ProcessDump(sys.argv[1], sys.argv[2]) | |
| 48 | |
| 49 | |
| 50 if '__main__' == __name__: | |
| 51 sys.exit(main()) | |
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