SysAdmin Password Tool

genpass.py

#!/usr/bin/env python3

# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program 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
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

from random import choice
import string
import getopt, sys


def main():
    try:
        opts, args = getopt.getopt(sys.argv[1:], "AaHhIc:l:PpSv9", ['help'])
    except getopt.GetoptError:
        usage()
        sys.exit(2)
    length = 8
    count = 1
    verbose = False
    itu = False
    addpunc = False
    addspecial = False
    chars = ''
    phonics = {}

    letters = (
        'alfa', 'bravo', 'charlie', 'delta', 'echo', 'foxtrot', 'golf',
        'hotel', 'india', 'juliett', 'kilo', 'lima', 'mike', 'november',
        'oscar', 'papa', 'quebec', 'romeo', 'sierra', 'tango', 'uniform',
        'victor', 'whiskey', 'x-ray', 'yankee', 'zulu'
    )

    numbers = (
        'Zero', 'One', 'Two', 'Three', 'Four',
        'Five', 'Six', 'Seven', 'Eight', 'Nine'
    )

    punctuation = {
        '!': 'Exclamation', '#': 'Pound', '"': 'DoubleQuote', '%': 'Percent',
        '$': 'Dollar', "'": 'SingleQuote', '&': 'Ampersand', ')': 'CloseParen',
        '(': 'OpenParen', '+': 'Plus', '*': 'Asterisk', '-': 'Dash', ',': 'Comma',
        '/': 'ForwardSlash', '.': 'Period', ';': 'SemiColon', ':': 'Colon',
        '=': 'Equal', '<': 'Lessthan', '?': 'Question', '>': 'Greaterthan',
        '@': 'At', '[': 'OpenBracket', ']': 'CloseBracket', '\\': 'Backslash',
        '_': 'Underscore', '^': 'Carret', '`': 'Backtic', '{': 'OpenCurly',
        '}': 'CloseCurly', '|': 'Bar', '~': 'Tilde'
    }

    for x in range(len(numbers)):
        phonics[str(x)]=numbers[x]

    for x in letters:
        phonics[x[0]]=x

    for x in letters:
        phonics[x[0].upper()]=x.upper()

    for x in punctuation:
        phonics[x]=punctuation[x]

    for o, a in opts:
        if o == "-v":
            verbose = True
        if o == "--help":
            usage()
            sys.exit()
        if o in ("-l"):
            length = int(a)
        if o in ("-c"):
            count = int(a)
        if o in ("-A"):
            chars+=string.ascii_uppercase
        if o in ("-a"):
            chars+=string.ascii_lowercase
        if o in ("-I"):
            itu=True
        if o in ("-p"):
            chars+=string.punctuation
        if o in ("-P"):
            addpunc=True
        if o in ("-S"):
            addspecial=True
            specialchars = "!@#$%^&*()_+-=[]{\\}|'"
        if o in ("-9"):
            chars+=string.digits
        if o in ("-H"):
            chars=string.digits + 'ABCDEF'
        if o in ("-h"):
            chars=string.digits + 'abcdef'

    if len(chars) == 0:
        if addpunc:
          chars=string.ascii_letters+string.digits+string.punctuation
        elif addspecial == True:
          chars=string.ascii_letters+string.digits+specialchars
        else:
          chars=string.ascii_letters+string.digits

    if verbose == True:
        print("possible values per character", len(chars))
        print("number of charactors", length)
        print("total number of combinations", len(chars)**length)

    for x in range(0,count):
        passwd=GenPasswd(length,chars)
        if itu:
            print(passwd,'- (', end=' ')
            for x in range(len(passwd)):
                print(phonics[passwd[x]],end=' ')
            print(')')
        else:
            print(passwd)

def usage():
    print("""
GenPass 1.1 Copyright (C) 2019 John C. Place <http://www.unixsage.com>
This program comes with ABSOLUTELY NO WARRANTY!
This is free software, and you are welcome to redistribute it
under certain conditions; http://www.gnu.org/licenses/gpl.txt

Usage: genpass.py [OPTIONS]
    -l length of password
    -c number of passwords to generate

    Character Sets
       -h hex only (0-9,a-f)
       -H HEX only (0-9,A-F)
       -A Upper case Letters (A-Z)
       -a Lower case Letters (a-z)
       -9 Digits (0-9)
       -p punction !"#$%&'()*+,-./:;<=>?@[\]^_`{|}~
       -P Add Punction to default set
       -S Add Special Characters - !@#$%^&*()_+-=[]{\\}|'

    Display Options
       -v Verbose
       -I ITU Phonetics

Defaults to one 8 char password containing a-z,A-Z,0-9
""")

def GenPasswd(length, chars):
    newpasswd=""
    for i in range(length):
        newpasswd = newpasswd + choice(chars)
    return newpasswd

if __name__ == "__main__":
    main()