| 1 | #! /usr/bin/python |
| 2 | ### -*-python-*- |
| 3 | ### |
| 4 | ### Tool for maintaining a secure-ish password database |
| 5 | ### |
| 6 | ### (c) 2005 Straylight/Edgeware |
| 7 | ### |
| 8 | |
| 9 | ###----- Licensing notice --------------------------------------------------- |
| 10 | ### |
| 11 | ### This file is part of the Python interface to Catacomb. |
| 12 | ### |
| 13 | ### Catacomb/Python is free software; you can redistribute it and/or modify |
| 14 | ### it under the terms of the GNU General Public License as published by |
| 15 | ### the Free Software Foundation; either version 2 of the License, or |
| 16 | ### (at your option) any later version. |
| 17 | ### |
| 18 | ### Catacomb/Python is distributed in the hope that it will be useful, |
| 19 | ### but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 20 | ### MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 21 | ### GNU General Public License for more details. |
| 22 | ### |
| 23 | ### You should have received a copy of the GNU General Public License |
| 24 | ### along with Catacomb/Python; if not, write to the Free Software Foundation, |
| 25 | ### Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 26 | |
| 27 | ###--------------------------------------------------------------------------- |
| 28 | ### Imported modules. |
| 29 | |
| 30 | from __future__ import with_statement |
| 31 | |
| 32 | from os import environ |
| 33 | from sys import argv, exit, stdin, stdout, stderr |
| 34 | from getopt import getopt, GetoptError |
| 35 | from fnmatch import fnmatch |
| 36 | import re |
| 37 | |
| 38 | import catacomb as C |
| 39 | from catacomb.pwsafe import * |
| 40 | |
| 41 | ###-------------------------------------------------------------------------- |
| 42 | ### Utilities. |
| 43 | |
| 44 | ## The program name. |
| 45 | prog = re.sub(r'^.*[/\\]', '', argv[0]) |
| 46 | |
| 47 | def moan(msg): |
| 48 | """Issue a warning message MSG.""" |
| 49 | print >>stderr, '%s: %s' % (prog, msg) |
| 50 | |
| 51 | def die(msg): |
| 52 | """Report MSG as a fatal error, and exit.""" |
| 53 | moan(msg) |
| 54 | exit(1) |
| 55 | |
| 56 | ###-------------------------------------------------------------------------- |
| 57 | ### Subcommand implementations. |
| 58 | |
| 59 | def cmd_create(av): |
| 60 | |
| 61 | ## Default crypto-primitive selections. |
| 62 | cipher = 'blowfish-cbc' |
| 63 | hash = 'rmd160' |
| 64 | mac = None |
| 65 | |
| 66 | ## Parse the options. |
| 67 | try: |
| 68 | opts, args = getopt(av, 'c:d:h:m:', |
| 69 | ['cipher=', 'database=', 'mac=', 'hash=']) |
| 70 | except GetoptError: |
| 71 | return 1 |
| 72 | dbty = 'gdbm' |
| 73 | for o, a in opts: |
| 74 | if o in ('-c', '--cipher'): cipher = a |
| 75 | elif o in ('-m', '--mac'): mac = a |
| 76 | elif o in ('-h', '--hash'): hash = a |
| 77 | elif o in ('-d', '--database'): dbty = a |
| 78 | else: raise 'Barf!' |
| 79 | if len(args) > 2: return 1 |
| 80 | if len(args) >= 1: tag = args[0] |
| 81 | else: tag = 'pwsafe' |
| 82 | |
| 83 | ## Set up the database. |
| 84 | if mac is None: mac = hash + '-hmac' |
| 85 | try: dbcls = StorageBackend.byname(dbty) |
| 86 | except KeyError: die("Unknown database backend `%s'" % dbty) |
| 87 | PW.create(dbcls, file, tag, |
| 88 | C.gcciphers[cipher], C.gchashes[hash], C.gcmacs[mac]) |
| 89 | |
| 90 | def cmd_changepp(av): |
| 91 | if len(av) != 0: return 1 |
| 92 | with PW(file, writep = True) as pw: pw.changepp() |
| 93 | |
| 94 | def cmd_find(av): |
| 95 | if len(av) != 1: return 1 |
| 96 | with PW(file) as pw: |
| 97 | try: print pw[av[0]] |
| 98 | except KeyError, exc: die("Password `%s' not found" % exc.args[0]) |
| 99 | |
| 100 | def cmd_store(av): |
| 101 | if len(av) < 1 or len(av) > 2: return 1 |
| 102 | tag = av[0] |
| 103 | with PW(file, writep = True) as pw: |
| 104 | if len(av) < 2: |
| 105 | pp = C.getpass("Enter passphrase `%s': " % tag) |
| 106 | vpp = C.getpass("Confirm passphrase `%s': " % tag) |
| 107 | if pp != vpp: die("passphrases don't match") |
| 108 | elif av[1] == '-': |
| 109 | pp = stdin.readline().rstrip('\n') |
| 110 | else: |
| 111 | pp = av[1] |
| 112 | pw[av[0]] = pp |
| 113 | |
| 114 | def cmd_copy(av): |
| 115 | if len(av) < 1 or len(av) > 2: return 1 |
| 116 | with PW(file) as pw_in: |
| 117 | with PW(av[0], writep = True) as pw_out: |
| 118 | if len(av) >= 3: pat = av[1] |
| 119 | else: pat = None |
| 120 | for k in pw_in: |
| 121 | if pat is None or fnmatch(k, pat): pw_out[k] = pw_in[k] |
| 122 | |
| 123 | def cmd_list(av): |
| 124 | if len(av) > 1: return 1 |
| 125 | with PW(file) as pw: |
| 126 | if len(av) >= 1: pat = av[0] |
| 127 | else: pat = None |
| 128 | for k in pw: |
| 129 | if pat is None or fnmatch(k, pat): print k |
| 130 | |
| 131 | def cmd_topixie(av): |
| 132 | if len(av) > 2: return 1 |
| 133 | with PW(file) as pw: |
| 134 | pix = C.Pixie() |
| 135 | if len(av) == 0: |
| 136 | for tag in pw: pix.set(tag, pw[tag]) |
| 137 | else: |
| 138 | tag = av[0] |
| 139 | if len(av) >= 2: pptag = av[1] |
| 140 | else: pptag = av[0] |
| 141 | pix.set(pptag, pw[tag]) |
| 142 | |
| 143 | def cmd_del(av): |
| 144 | if len(av) != 1: return 1 |
| 145 | with PW(file, writep = True) as pw: |
| 146 | tag = av[0] |
| 147 | try: del pw[tag] |
| 148 | except KeyError, exc: die("Password `%s' not found" % exc.args[0]) |
| 149 | |
| 150 | commands = { 'create': [cmd_create, |
| 151 | '[-c CIPHER] [-d DBTYPE] [-h HASH] [-m MAC] [PP-TAG]'], |
| 152 | 'find' : [cmd_find, 'LABEL'], |
| 153 | 'store' : [cmd_store, 'LABEL [VALUE]'], |
| 154 | 'list' : [cmd_list, '[GLOB-PATTERN]'], |
| 155 | 'changepp' : [cmd_changepp, ''], |
| 156 | 'copy' : [cmd_copy, 'DEST-FILE [GLOB-PATTERN]'], |
| 157 | 'to-pixie' : [cmd_topixie, '[TAG [PIXIE-TAG]]'], |
| 158 | 'delete' : [cmd_del, 'TAG']} |
| 159 | |
| 160 | ###-------------------------------------------------------------------------- |
| 161 | ### Command-line handling and dispatch. |
| 162 | |
| 163 | def version(): |
| 164 | print '%s 1.0.0' % prog |
| 165 | print 'Backend types: %s' % \ |
| 166 | ' '.join([c.NAME for c in StorageBackend.classes()]) |
| 167 | |
| 168 | def usage(fp): |
| 169 | print >>fp, 'Usage: %s COMMAND [ARGS...]' % prog |
| 170 | |
| 171 | def help(): |
| 172 | version() |
| 173 | print |
| 174 | usage(stdout) |
| 175 | print ''' |
| 176 | Maintains passwords or other short secrets securely. |
| 177 | |
| 178 | Options: |
| 179 | |
| 180 | -h, --help Show this help text. |
| 181 | -v, --version Show program version number. |
| 182 | -u, --usage Show short usage message. |
| 183 | |
| 184 | -f, --file=FILE Where to find the password-safe file. |
| 185 | |
| 186 | Commands provided: |
| 187 | ''' |
| 188 | for c in sorted(commands): |
| 189 | print '%s %s' % (c, commands[c][1]) |
| 190 | |
| 191 | ## Choose a default database file. |
| 192 | if 'PWSAFE' in environ: |
| 193 | file = environ['PWSAFE'] |
| 194 | else: |
| 195 | file = '%s/.pwsafe' % environ['HOME'] |
| 196 | |
| 197 | ## Parse the command-line options. |
| 198 | try: |
| 199 | opts, argv = getopt(argv[1:], 'hvuf:', |
| 200 | ['help', 'version', 'usage', 'file=']) |
| 201 | except GetoptError: |
| 202 | usage(stderr) |
| 203 | exit(1) |
| 204 | for o, a in opts: |
| 205 | if o in ('-h', '--help'): |
| 206 | help() |
| 207 | exit(0) |
| 208 | elif o in ('-v', '--version'): |
| 209 | version() |
| 210 | exit(0) |
| 211 | elif o in ('-u', '--usage'): |
| 212 | usage(stdout) |
| 213 | exit(0) |
| 214 | elif o in ('-f', '--file'): |
| 215 | file = a |
| 216 | else: |
| 217 | raise 'Barf!' |
| 218 | if len(argv) < 1: |
| 219 | usage(stderr) |
| 220 | exit(1) |
| 221 | |
| 222 | ## Dispatch to a command handler. |
| 223 | if argv[0] in commands: |
| 224 | c = argv[0] |
| 225 | argv = argv[1:] |
| 226 | else: |
| 227 | c = 'find' |
| 228 | try: |
| 229 | if commands[c][0](argv): |
| 230 | print >>stderr, 'Usage: %s %s %s' % (prog, c, commands[c][1]) |
| 231 | exit(1) |
| 232 | except DecryptError: |
| 233 | die("decryption failure") |
| 234 | |
| 235 | ###----- That's all, folks -------------------------------------------------- |