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| 1 | +#!/usr/bin/env python3 |
| 2 | +""" |
| 3 | +Author : Lee A. Congdon <lee@lcongdon.com> |
| 4 | +Date : 2021-09-09 |
| 5 | +Purpose: Tiny Python Projects password exercise |
| 6 | +""" |
| 7 | + |
| 8 | +import argparse |
| 9 | +import random |
| 10 | +import re |
| 11 | +import string |
| 12 | + |
| 13 | + |
| 14 | +def get_args(): |
| 15 | + """Parse arguments""" |
| 16 | + |
| 17 | + parser = argparse.ArgumentParser( |
| 18 | + description='Password maker', |
| 19 | + formatter_class=argparse.ArgumentDefaultsHelpFormatter) |
| 20 | + |
| 21 | + parser.add_argument('file', |
| 22 | + nargs='+', |
| 23 | + default=None, |
| 24 | + type=argparse.FileType('rt'), |
| 25 | + help='Input file(s)', |
| 26 | + metavar='FILE') |
| 27 | + |
| 28 | + parser.add_argument('-n', |
| 29 | + '--num', |
| 30 | + default=3, |
| 31 | + type=int, |
| 32 | + help='Number of passwords to generate', |
| 33 | + metavar='num_passwords') |
| 34 | + |
| 35 | + parser.add_argument('-w', |
| 36 | + '--num_words', |
| 37 | + default=4, |
| 38 | + type=int, |
| 39 | + help='Number of words to use for password', |
| 40 | + metavar='num_words') |
| 41 | + |
| 42 | + parser.add_argument('-m', |
| 43 | + '--min_word_len', |
| 44 | + default=3, |
| 45 | + type=int, |
| 46 | + help='Minimum word length', |
| 47 | + metavar='minimum') |
| 48 | + |
| 49 | + parser.add_argument('-x', |
| 50 | + '--max_word_len', |
| 51 | + default=6, |
| 52 | + type=int, |
| 53 | + help='Maximum word length', |
| 54 | + metavar='maximum') |
| 55 | + |
| 56 | + parser.add_argument('-s', |
| 57 | + '--seed', |
| 58 | + default=None, |
| 59 | + type=int, |
| 60 | + help='Random seed', |
| 61 | + metavar='seed') |
| 62 | + |
| 63 | + parser.add_argument('-l', |
| 64 | + '--l33t', |
| 65 | + action='store_true', |
| 66 | + help='Obfuscate letters') |
| 67 | + |
| 68 | + return parser.parse_args() |
| 69 | + |
| 70 | + |
| 71 | +def clean(word): |
| 72 | + """Remove all non-letters""" |
| 73 | + pattern = re.compile(r'[^A-Za-z]') |
| 74 | + return re.sub(pattern, '', word) |
| 75 | + |
| 76 | + |
| 77 | +def ransom(word): |
| 78 | + """Randomly capitalize characters""" |
| 79 | + return ''.join([char.lower() if random.choice([True, False]) |
| 80 | + else char.upper() for char in word]) |
| 81 | + |
| 82 | + |
| 83 | +def l33t(password): |
| 84 | + mapping = {'a': '@', 'A': '4', 'O': '0', |
| 85 | + 't': '+', 'E': '3', 'I': '1', 'S': '5'} |
| 86 | + return ''.join([mapping.get(char, char) for char in ransom(password)]) + random.choice(string.punctuation) |
| 87 | + |
| 88 | + |
| 89 | +def main(): |
| 90 | + """Main program""" |
| 91 | + |
| 92 | + args = get_args() |
| 93 | + random.seed(args.seed) |
| 94 | + words = set() |
| 95 | + |
| 96 | + def word_len(word): |
| 97 | + return args.min_word_len <= len(word) <= args.max_word_len |
| 98 | + |
| 99 | + for fh in args.file: |
| 100 | + for line in fh: |
| 101 | + for word in filter(word_len, map(clean, line.lower().split())): |
| 102 | + words.add(word.title()) |
| 103 | + words = sorted(words) |
| 104 | + passwords = [''.join(random.sample(words, args.num_words)) |
| 105 | + for _ in range(args.num)] |
| 106 | + if args.l33t: |
| 107 | + passwords = map(l33t, passwords) |
| 108 | + print('\n'.join(passwords)) |
| 109 | + |
| 110 | + |
| 111 | +if __name__ == '__main__': |
| 112 | + main() |
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