97 lines
4.3 KiB
Python
97 lines
4.3 KiB
Python
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#!/usr/bin/env python3
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# Thanks to https://gist.github.com/stantonk/7268449
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# See also:
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# http://stackoverflow.com/questions/5480131/will-python-systemrandom-os-urandom-always-have-enough-entropy-for-good-crypto
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import argparse
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import random
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import re
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import string
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class genPass(object):
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def __init__(self, case = None, charset = 'complex', passlen = 32, quotes = True, backslashes = True,
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human = False):
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# complex is symbols and mixed-case alphanumeric
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# simple is mixed-case alphanumeric
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_alphanum = string.ascii_letters + string.digits
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chars = {'complex': _alphanum + string.punctuation,
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'simple': _alphanum}
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self.chars = chars[charset]
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if not quotes:
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self.chars = re.sub('["\']', '', self.chars)
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if not backslashes:
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self.chars = re.sub('\\\\', '', self.chars)
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if human:
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_dupechars = ['`', "'", '|', 'l', 'I', 'i', 'l', '1', 'o', '0', 'O']
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self.chars = ''.join(sorted(list(set(self.chars) - set(_dupechars))))
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if case == 'upper':
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self.chars = self.chars.upper()
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elif case == 'lower':
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self.chars = self.chars.lower()
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self.chars = ''.join(sorted(list(set(self.chars))))
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self.passlen = passlen
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def generate(self):
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self.pw = ''
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for _ in range(self.passlen):
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self.pw += random.SystemRandom().choice(self.chars)
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def parseArgs():
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args = argparse.ArgumentParser(description = 'A password generator.')
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args.add_argument('-t', '--type',
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dest = 'passtype',
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choices = ['simple', 'complex'], # chars in genPass
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default = 'complex',
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help = ('Whether to generate "simple" (no symbols, '
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'safer for e.g. databases) password(s) or more complex ones. The default is "complex"'))
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args.add_argument('-l', '--length',
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dest = 'passlen',
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metavar = 'LENGTH',
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type = int,
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default = 32,
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help = ('The length of the password(s) to generate. The default is 32'))
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args.add_argument('-c', '--count',
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dest = 'passcount',
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metavar = 'COUNT',
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type = int,
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default = 1,
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help = ('The number of passwords to generate. The default is 1'))
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args.add_argument('-q', '--no-quotes',
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dest = 'quotes',
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action = 'store_false',
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help = ('If specified, strip out quotation marks (both " and \') from the passwords. '
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'Only relevant if -t/--type is complex, as simple types don\'t contain these'))
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args.add_argument('-b', '--no-backslashes',
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dest = 'backslashes',
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action = 'store_false',
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help = ('If specified, strip out backslashes. Only relevant if -t/--type is complex, as '
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'simple types don\'t contain these'))
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args.add_argument('-H', '--human',
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dest = 'human',
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action = 'store_true',
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help = ('If specified, make the passwords easier to read by human eyes (i.e. no 1 and l, '
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'o or O or 0, etc.)'))
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caseargs = args.add_mutually_exclusive_group()
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caseargs.add_argument('-L', '--lower',
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dest = 'case',
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action = 'store_const',
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const = 'lower',
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help = 'If specified, make password all lowercase')
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caseargs.add_argument('-U', '--upper',
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dest = 'case',
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action = 'store_const',
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const = 'upper',
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help = 'If specified, make password all UPPERCASE')
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return(args)
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def main():
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args = vars(parseArgs().parse_args())
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for _ in range(0, args['passcount']):
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p = genPass(charset = args['passtype'], passlen = args['passlen'],
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quotes = args['quotes'], backslashes = args['backslashes'],
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human = args['human'], case = args['case'])
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p.generate()
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print(p.pw)
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if __name__ == '__main__':
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main()
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