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1 | #! /usr/bin/python2.2 |
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2 | # -*-python-*- |
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3 | |
4 | import catacomb as C |
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5 | from catacomb.pwsafe import * |
6 | import gdbm as G |
7 | from os import environ |
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8 | from sys import argv, exit, stdin, stdout, stderr |
9 | from getopt import getopt, GetoptError |
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10 | from fnmatch import fnmatch |
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11 | import sre as re |
12 | |
13 | prog = re.sub(r'^.*[/\\]', '', argv[0]) |
14 | def moan(msg): |
15 | print >>stderr, '%s: %s' % (prog, msg) |
16 | def die(msg): |
17 | moan(msg) |
18 | exit(1) |
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19 | |
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20 | if 'PWSAFE' in environ: |
21 | file = environ['PWSAFE'] |
22 | else: |
23 | file = '%s/.pwsafe' % environ['HOME'] |
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24 | |
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25 | def cmd_create(av): |
26 | cipher = 'blowfish-cbc' |
27 | hash = 'rmd160' |
28 | mac = None |
29 | try: |
30 | opts, args = getopt(av, 'c:h:m:', ['cipher=', 'mac=', 'hash=']) |
31 | except GetoptError: |
32 | return 1 |
33 | for o, a in opts: |
34 | if o in ('-c', '--cipher'): |
35 | cipher = a |
36 | elif o in ('-m', '--mac'): |
37 | mac = a |
38 | elif o in ('-h', '--hash'): |
39 | hash = a |
40 | else: |
41 | raise 'Barf!' |
42 | if len(args) > 2: |
43 | return 1 |
44 | if len(args) >= 1: |
45 | tag = args[0] |
46 | else: |
47 | tag = 'pwsafe' |
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48 | db = G.open(file, 'n', 0600) |
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49 | pp = C.ppread(tag, C.PMODE_VERIFY) |
50 | if not mac: mac = hash + '-hmac' |
51 | c = C.gcciphers[cipher] |
52 | h = C.gchashes[hash] |
53 | m = C.gcmacs[mac] |
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54 | ppk = PW.PPK(pp, c, h, m) |
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55 | ck = C.rand.block(c.keysz.default) |
56 | mk = C.rand.block(m.keysz.default) |
57 | k = Crypto(c, h, m, ck, mk) |
58 | db['tag'] = tag |
59 | db['salt'] = ppk.salt |
60 | db['cipher'] = cipher |
61 | db['hash'] = hash |
62 | db['mac'] = mac |
63 | db['key'] = ppk.encrypt(wrapstr(ck) + wrapstr(mk)) |
64 | db['magic'] = k.encrypt(C.rand.block(h.hashsz)) |
65 | |
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66 | def chomp(pp): |
67 | if len(pp) > 0 and pp[-1] == '\n': |
68 | pp = pp[:-1] |
69 | return pp |
70 | |
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71 | def cmd_changepp(av): |
72 | if len(av) != 0: |
73 | return 1 |
74 | pw = PW(file, 'w') |
75 | pw.changepp() |
76 | |
77 | def cmd_find(av): |
78 | if len(av) != 1: |
79 | return 1 |
80 | pw = PW(file) |
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81 | try: |
82 | print pw[av[0]] |
83 | except KeyError, exc: |
84 | die('Password `%s\' not found.' % exc.args[0]) |
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85 | |
86 | def cmd_store(av): |
87 | if len(av) < 1 or len(av) > 2: |
88 | return 1 |
89 | tag = av[0] |
90 | if len(av) < 2: |
91 | pp = C.getpass("Enter passphrase `%s': " % tag) |
92 | vpp = C.getpass("Confirm passphrase `%s': " % tag) |
93 | if pp != vpp: |
94 | raise ValueError, "passphrases don't match" |
95 | elif av[1] == '-': |
96 | pp = stdin.readline() |
97 | else: |
98 | pp = av[1] |
99 | pw = PW(file, 'w') |
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100 | pw[av[0]] = chomp(pp) |
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101 | |
102 | def cmd_copy(av): |
103 | if len(av) < 1 or len(av) > 2: |
104 | return 1 |
105 | pw_in = PW(file) |
106 | pw_out = PW(av[0], 'w') |
107 | if len(av) >= 3: |
108 | pat = av[1] |
109 | else: |
110 | pat = None |
111 | for k in pw_in: |
112 | if pat is None or fnmatch(k, pat): |
113 | pw_out[k] = pw_in[k] |
114 | |
115 | def cmd_list(av): |
116 | if len(av) > 1: |
117 | return 1 |
118 | pw = PW(file) |
119 | if len(av) >= 1: |
120 | pat = av[0] |
121 | else: |
122 | pat = None |
123 | for k in pw: |
124 | if pat is None or fnmatch(k, pat): |
125 | print k |
126 | |
127 | def cmd_topixie(av): |
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128 | if len(av) > 2: |
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129 | return 1 |
130 | pw = PW(file) |
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131 | pix = C.Pixie() |
132 | if len(av) == 0: |
133 | for tag in pw: |
134 | pix.set(tag, pw[tag]) |
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135 | else: |
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136 | tag = av[0] |
137 | if len(av) >= 2: |
138 | pptag = av[1] |
139 | else: |
140 | pptag = av[0] |
141 | pix.set(pptag, pw[tag]) |
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142 | |
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143 | def cmd_del(av): |
144 | if len(av) != 1: |
145 | return 1 |
146 | pw = PW(file, 'w') |
147 | tag = av[0] |
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148 | try: |
149 | del pw[tag] |
150 | except KeyError, exc: |
151 | die('Password `%s\' not found.' % exc.args[0]) |
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152 | |
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153 | def asciip(s): |
154 | for ch in s: |
155 | if ch < ' ' or ch > '~': return False |
156 | return True |
157 | def present(s): |
158 | if asciip(s): return s |
159 | return C.ByteString(s) |
160 | def cmd_dump(av): |
161 | db = gdbm.open(file, 'r') |
162 | k = db.firstkey() |
163 | while True: |
164 | if k is None: break |
165 | print '%r: %r' % (present(k), present(db[k])) |
166 | k = db.nextkey(k) |
167 | |
168 | commands = { 'create': [cmd_create, |
169 | '[-c CIPHER] [-h HASH] [-m MAC] [PP-TAG]'], |
170 | 'find' : [cmd_find, 'LABEL'], |
171 | 'store' : [cmd_store, 'LABEL [VALUE]'], |
172 | 'list' : [cmd_list, '[GLOB-PATTERN]'], |
173 | 'changepp' : [cmd_changepp, ''], |
174 | 'copy' : [cmd_copy, 'DEST-FILE [GLOB-PATTERN]'], |
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175 | 'to-pixie' : [cmd_topixie, '[TAG [PIXIE-TAG]]'], |
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176 | 'delete' : [cmd_del, 'TAG'], |
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177 | 'dump' : [cmd_dump, '']} |
178 | |
179 | def version(): |
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180 | print '%s 1.0.0' % prog |
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181 | def usage(fp): |
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182 | print >>fp, 'Usage: %s COMMAND [ARGS...]' % prog |
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183 | def help(): |
184 | version() |
185 | print |
186 | usage(stdout) |
187 | print ''' |
188 | Maintains passwords or other short secrets securely. |
189 | |
190 | Options: |
191 | |
192 | -h, --help Show this help text. |
193 | -v, --version Show program version number. |
194 | -u, --usage Show short usage message. |
195 | |
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196 | -f, --file=FILE Where to find the password-safe file. |
197 | |
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198 | Commands provided: |
199 | ''' |
200 | for c in commands: |
201 | print '%s %s' % (c, commands[c][1]) |
202 | |
203 | try: |
204 | opts, argv = getopt(argv[1:], |
205 | 'hvuf:', |
206 | ['help', 'version', 'usage', 'file=']) |
207 | except GetoptError: |
208 | usage(stderr) |
209 | exit(1) |
210 | for o, a in opts: |
211 | if o in ('-h', '--help'): |
212 | help() |
213 | exit(0) |
214 | elif o in ('-v', '--version'): |
215 | version() |
216 | exit(0) |
217 | elif o in ('-u', '--usage'): |
218 | usage(stdout) |
219 | exit(0) |
220 | elif o in ('-f', '--file'): |
221 | file = a |
222 | else: |
223 | raise 'Barf!' |
224 | if len(argv) < 1: |
225 | usage(stderr) |
226 | exit(1) |
227 | |
228 | if argv[0] in commands: |
229 | c = argv[0] |
230 | argv = argv[1:] |
231 | else: |
232 | c = 'find' |
233 | if commands[c][0](argv): |
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234 | print >>stderr, 'Usage: %s %s %s' % (prog, c, commands[c][1]) |
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235 | exit(1) |