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103 lines
2.8 KiB
Python
Executable File
103 lines
2.8 KiB
Python
Executable File
#!/usr/bin/env python
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"""
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cloak.py - Simple file encryption and/or compression utility
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Copyright (C) 2010 Miroslav Stampar, Bernardo Damele A. G.
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email(s): miroslav.stampar@gmail.com, bernardo.damele@gmail.com
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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"""
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import os
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import sys
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import bz2
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from optparse import OptionError
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from optparse import OptionParser
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def hideAscii(data):
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retVal = ""
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for i in xrange(len(data)):
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if ord(data[i]) < 128:
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retVal += chr(ord(data[i]) ^ 127)
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else:
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retVal += data[i]
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return retVal
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def cloak(inputFile):
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retVal = ""
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f = open(inputFile, 'rb')
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original = f.read()
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f.close()
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data = bz2.compress(original)
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return hideAscii(data)
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def decloak(inputFile):
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retVal = ""
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f = open(inputFile, 'rb')
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original = f.read()
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f.close()
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data = bz2.decompress(hideAscii(original))
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return data
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def main():
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usage = '%s [-d] -i <input file> [-o <output file>]' % sys.argv[0]
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parser = OptionParser(usage=usage, version='0.1')
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try:
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parser.add_option('-d', dest='decrypt', action="store_true", help='Decrypt')
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parser.add_option('-i', dest='inputFile', help='Input file')
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parser.add_option('-o', dest='outputFile', help='Output file')
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(args, _) = parser.parse_args()
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if not args.inputFile:
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parser.error('Missing the input file, -h for help')
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except (OptionError, TypeError), e:
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parser.error(e)
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if args.inputFile == '*':
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pass
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elif not os.path.isfile(args.inputFile):
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print 'ERROR: the provided input file \'%s\' is not a regular file' % args.inputFile
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sys.exit(1)
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if not args.decrypt:
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data = cloak(args.inputFile)
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else:
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data = decloak(args.inputFile)
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if not args.outputFile:
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if not args.decrypt:
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args.outputFile = args.inputFile + '_'
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else:
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args.outputFile = args.inputFile[:-1]
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fpOut = open(args.outputFile, 'wb')
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sys.stdout = fpOut
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sys.stdout.write(data)
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sys.stdout.close()
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if __name__ == '__main__':
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main() |