mirror of
https://github.com/Luzifer/browser-privacy.git
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53 lines
1.2 KiB
Python
53 lines
1.2 KiB
Python
import sys
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import re
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import codecs
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import hashlib
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import base64
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import datetime
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import pytz
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checksumRegexp = re.compile(r'^! Checksum: ([\w\+\/=]+).*\n', re.M)
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timeUpdRegexp = re.compile(r'^! TimeUpdated: (.*)\n', re.M)
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def addChecksum(data):
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checksum = calculateChecksum(data)
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data = re.sub(checksumRegexp,
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r'! Checksum: {}\n'.format(checksum),
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data,
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1)
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return data
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def addDate(data):
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d = datetime.datetime.utcnow().replace(microsecond=0)
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d_with_timezone = d.replace(tzinfo=pytz.UTC)
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now = d_with_timezone.isoformat()
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return re.sub(timeUpdRegexp, r'! TimeUpdated: {}\n'.format(now), data)
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def calculateChecksum(data):
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data = normalize(data)
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hash = hashlib.md5()
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hash.update(data.encode('utf-8'))
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return base64.b64encode(hash.digest()).decode('utf-8').rstrip('=')
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def normalize(data):
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data = re.sub(r'\r', '', data)
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data = re.sub(r'\n+', '\n', data)
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data = re.sub(checksumRegexp, '', data)
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return data
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if __name__ == '__main__':
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data = open('filters.txt').read()
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data = addDate(data)
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data = addChecksum(data)
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with open('filters.txt', 'w') as f:
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f.write(data)
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