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annotate genpwd.py @ 227:4bb2d0975cfe imports

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imports: import genpwd,py from fmgbackup4. This is a script to generate passwords.
author Franz Glasner <fzglas.hg@dom66.de>
date Fri, 07 Feb 2025 12:37:13 +0100
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227
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
Franz Glasner <fzglas.hg@dom66.de>
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1 #!/usr/local/bin/python3
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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2 # -*- coding: utf-8 -*-
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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3 #
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4 # @(#)$Id: //Administration/Server/Konfiguration/Dateien/_main/fmgbackup4/root/bin/genpwd.py#1 $
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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5 # $Change: 28588 $ $DateTime: 2018/10/31 13:11:48 $ $Author: fag $
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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6 #
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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7 r"""Generate passwords.
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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8
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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9 Usage: genpwd.py [ Options ] required_length
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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10
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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11 Options:
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12
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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13 --type, -t web, web-safe, web-safe2, base64, base32, ascii85
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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14
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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15 :Author: Franz Glasner
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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16
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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17 """
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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18
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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19 from __future__ import (division, absolute_import, print_function)
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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20
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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21 __author__ = "Franz Glasner"
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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22
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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23 __version__ = "0.1"
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24
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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25
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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26 import getopt
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27 import sys
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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28 import os
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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29 import base64
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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30
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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31
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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32 WEB_CHARS = b"ABCDEFGHIJKLMNOPQRSTUVWYXZabcdefghijklmnopqrstuvwxyz0123456789.,-_;!()[]{}*"
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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33 WEB_SAFE_CHARS = b"ABCDEFGHJKLMNPQRSTUVWYXZabcdefghijkmnopqrstuvwxyz23456789.,-_;!"
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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34 WEB_SAFE2_CHARS = b".,-_;!" + WEB_SAFE_CHARS
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35
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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36 PY2 = sys.version_info[0] <= 2
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37
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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38
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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39 def main():
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40 opt_type = "web-safe2"
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41 opts, args = getopt.getopt(sys.argv[1:],
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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42 "t:",
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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43 ["type="])
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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44 for opt, val in opts:
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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45 if opt in ("-t", "--type"):
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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46 if val not in ("web", "web-safe", "web-safe2",
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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47 "base64", "base32", "ascii85", ):
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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48 raise getopt.GetoptError("invalid type: %s" % val, "")
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49 opt_type = val
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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50 else:
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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51 raise RuntimeError("inconsistent getopt handling")
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52
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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53 try:
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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54 req_length = int(args[0], 10)
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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55 except IndexError:
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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56 raise getopt.GetoptError("no length given")
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57
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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58 if opt_type == "web":
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59 pwd = gen_web(req_length, WEB_CHARS)
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60 elif opt_type == "web-safe":
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61 pwd = gen_web(req_length, WEB_SAFE_CHARS)
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62 elif opt_type == "web-safe2":
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63 pwd = gen_web(req_length, WEB_SAFE2_CHARS)
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64 elif opt_type == "base64":
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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65 encoder = base64.b64encode
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66 pwd = gen_bin(req_length, encoder)
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67 elif opt_type == "base32":
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68 encoder = base64.b32encode
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69 pwd = gen_bin(req_length, encoder)
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70 elif opt_type == "ascii85":
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71 encoder = base64.a85encode
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72 pwd = gen_bin(req_length, encoder)
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73 else:
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74 raise NotImplementedError("type not yet implemented: %s" % opt_type)
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75 print(pwd)
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76
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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77
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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78 def gen_web(length, chars):
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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79 mult = 256//len(chars)
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80 repertoire = chars * mult
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81 assert len(repertoire) <= 256
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82 pwd = []
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83 while len(pwd) < length:
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84 c = os.urandom(1)
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85 if PY2:
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86 c = ord(c)
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87 else:
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88 c = c[0]
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89 if c < len(repertoire):
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90 pwd.append(repertoire[c])
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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91 if PY2:
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92 pwd = b''.join(pwd)
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93 else:
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94 pwd = bytes(pwd)
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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95 return pwd
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96
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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97
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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98 def gen_bin(length, encoder):
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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99 pwd = encoder(os.urandom(length))
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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100 return pwd[:length]
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101
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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102
4bb2d0975cfe imports: import genpwd,py from fmgbackup4.
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103 if __name__ == "__main__":
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104 main()