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1 #!/usr/bin/python | 1 #!/usr/bin/env python |
2 # Copyright (c) 2011 The Chromium Authors. All rights reserved. | 2 # Copyright (c) 2011 The Chromium Authors. All rights reserved. |
3 # Use of this source code is governed by a BSD-style license that can be | 3 # Use of this source code is governed by a BSD-style license that can be |
4 # found in the LICENSE file. | 4 # found in the LICENSE file. |
5 | 5 |
6 """ Read a CRX file and write out the App ID and the Full Hash of the ID. | 6 """ Read a CRX file and write out the App ID and the Full Hash of the ID. |
7 See: http://code.google.com/chrome/extensions/crx.html | 7 See: http://code.google.com/chrome/extensions/crx.html |
8 and 'http://stackoverflow.com/questions/' | 8 and 'http://stackoverflow.com/questions/' |
9 + '1882981/google-chrome-alphanumeric-hashes-to-identify-extensions' | 9 + '1882981/google-chrome-alphanumeric-hashes-to-identify-extensions' |
10 for docs on the format. | 10 for docs on the format. |
11 """ | 11 """ |
12 | 12 |
13 import sys | 13 import sys |
14 import hashlib | 14 import hashlib |
15 | 15 |
16 def usage(argv): | 16 def usage(argv): |
17 print "%s: crx_file" % argv[0] | 17 print "%s: crx_file" % argv[0] |
18 | 18 |
19 EXPECTED_CRX_MAGIC_NUM = 'Cr24' | 19 EXPECTED_CRX_MAGIC_NUM = 'Cr24' |
20 EXPECTED_CRX_VERSION = 2 | 20 EXPECTED_CRX_VERSION = 2 |
21 | 21 |
Alexander Potapenko
2011/11/24 07:53:02
Please fix the vertical whitespaces.
| |
22 def HexToInt(hex_chars): | 22 def HexToInt(hex_chars): |
23 """ Convert bytes like \xab -> 171 """ | 23 """ Convert bytes like \xab -> 171 """ |
24 val = 0 | 24 val = 0 |
25 for i in xrange(len(hex_chars)): | 25 for i in xrange(len(hex_chars)): |
26 val += pow(256, i) * ord(hex_chars[i]) | 26 val += pow(256, i) * ord(hex_chars[i]) |
27 return val | 27 return val |
28 | 28 |
29 def HexToMPDecimal(hex_chars): | 29 def HexToMPDecimal(hex_chars): |
30 """ Convert bytes to an MPDecimal string. Example \x00 -> "aa" | 30 """ Convert bytes to an MPDecimal string. Example \x00 -> "aa" |
31 This gives us the AppID for a chrome extension. | 31 This gives us the AppID for a chrome extension. |
(...skipping 51 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... | |
83 | 83 |
84 def main(argv): | 84 def main(argv): |
85 if len(argv) != 2: | 85 if len(argv) != 2: |
86 usage(argv) | 86 usage(argv) |
87 return 1 | 87 return 1 |
88 print 'Raw Bytes: %s' % GetCRXHash(sys.argv[1]) | 88 print 'Raw Bytes: %s' % GetCRXHash(sys.argv[1]) |
89 print 'AppID: %s' % GetCRXAppID(sys.argv[1]) | 89 print 'AppID: %s' % GetCRXAppID(sys.argv[1]) |
90 | 90 |
91 if __name__ == '__main__': | 91 if __name__ == '__main__': |
92 sys.exit(main(sys.argv)) | 92 sys.exit(main(sys.argv)) |
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