| #!/usr/bin/env python |
| # Copyright 2013 The Chromium Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| """A tool to extract minidumps from dmp crash dumps.""" |
| |
| import os |
| import sys |
| from cgi import parse_multipart |
| |
| |
| def ProcessDump(dump_file, minidump_file): |
| """Extracts the part of the dump file that minidump_stackwalk can read. |
| |
| The dump files generated by the breakpad integration multi-part form data |
| that include the minidump as file attachment. |
| |
| Args: |
| dump_file: the dump file that needs to be processed. |
| minidump_file: the file to write the minidump to. |
| """ |
| try: |
| dump = open(dump_file, 'rb') |
| boundary = dump.readline().strip()[2:] |
| data = parse_multipart(dump, {'boundary': boundary}) |
| except: |
| print 'Failed to read dmp file %s' % dump_file |
| return |
| |
| if not 'upload_file_minidump' in data: |
| print 'Could not find minidump file in dump.' |
| return |
| |
| f = open(minidump_file, 'w') |
| f.write("\r\n".join(data['upload_file_minidump'])) |
| f.close() |
| |
| |
| def main(): |
| if len(sys.argv) != 3: |
| print 'Usage: %s [dmp file] [minidump]' % sys.argv[0] |
| print '' |
| print 'Extracts the minidump stored in the crash dump file' |
| return 1 |
| |
| ProcessDump(sys.argv[1], sys.argv[2]) |
| |
| |
| if '__main__' == __name__: |
| sys.exit(main()) |
