/usr/lib/python3/dist-packages/guessit/hash_ed2k.py is in python3-guessit 0.11.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 | #!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# GuessIt - A library for guessing information from filenames
# Copyright (c) 2013 Nicolas Wack <wackou@gmail.com>
#
# GuessIt is free software; you can redistribute it and/or modify it under
# the terms of the Lesser GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# GuessIt is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# Lesser GNU General Public License for more details.
#
# You should have received a copy of the Lesser GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
from __future__ import absolute_import, division, print_function, unicode_literals
import hashlib
import os.path
from functools import reduce
from guessit import s, to_hex
def hash_file(filename):
"""Returns the ed2k hash of a given file.
>>> testfile = os.path.join(os.path.dirname(__file__), 'test/dummy.srt')
>>> s(hash_file(testfile))
'ed2k://|file|dummy.srt|59|41F58B913AB3973F593BEBA8B8DF6510|/'
"""
return 'ed2k://|file|%s|%d|%s|/' % (os.path.basename(filename),
os.path.getsize(filename),
hash_filehash(filename).upper())
def hash_filehash(filename):
"""Returns the ed2k hash of a given file.
This function is taken from:
http://www.radicand.org/blog/orz/2010/2/21/edonkey2000-hash-in-python/
"""
md4 = hashlib.new('md4').copy
def gen(f):
while True:
x = f.read(9728000)
if x:
yield x
else:
return
def md4_hash(data):
m = md4()
m.update(data)
return m
with open(filename, 'rb') as f:
a = gen(f)
hashes = [md4_hash(data).digest() for data in a]
if len(hashes) == 1:
return to_hex(hashes[0])
else:
return md4_hash(reduce(lambda a, d: a + d, hashes, "")).hexd
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