d03ab969 |
1 | /* -*-c-*- |
2 | * |
252c122d |
3 | * $Id: keyutil.c,v 1.4 1999/12/22 15:48:10 mdw Exp $ |
d03ab969 |
4 | * |
5 | * Simple key manager program |
6 | * |
252c122d |
7 | * (c) 1999 Straylight/Edgeware |
d03ab969 |
8 | */ |
9 | |
10 | /*----- Licensing notice --------------------------------------------------* |
11 | * |
12 | * This file is part of Catacomb. |
13 | * |
14 | * Catacomb is free software; you can redistribute it and/or modify |
15 | * it under the terms of the GNU Library General Public License as |
16 | * published by the Free Software Foundation; either version 2 of the |
17 | * License, or (at your option) any later version. |
18 | * |
19 | * Catacomb is distributed in the hope that it will be useful, |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
22 | * GNU Library General Public License for more details. |
23 | * |
24 | * You should have received a copy of the GNU Library General Public |
25 | * License along with Catacomb; if not, write to the Free |
26 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
27 | * MA 02111-1307, USA. |
28 | */ |
29 | |
30 | /*----- Revision history --------------------------------------------------* |
31 | * |
32 | * $Log: keyutil.c,v $ |
252c122d |
33 | * Revision 1.4 1999/12/22 15:48:10 mdw |
34 | * Track new key-management changes. Support new key generation |
35 | * algorithms. |
36 | * |
ce1f2631 |
37 | * Revision 1.3 1999/11/02 15:23:24 mdw |
38 | * Fix newlines in keyring list. |
39 | * |
cc321283 |
40 | * Revision 1.2 1999/10/15 21:05:28 mdw |
41 | * In `key list', show timezone for local times, and support `-u' option |
42 | * for UTC output. |
43 | * |
d03ab969 |
44 | * Revision 1.1 1999/09/03 08:41:12 mdw |
45 | * Initial import. |
46 | * |
47 | */ |
48 | |
49 | /*----- Header files ------------------------------------------------------*/ |
50 | |
51 | #include "config.h" |
52 | |
53 | #include <errno.h> |
54 | #include <stdio.h> |
55 | #include <stdlib.h> |
56 | #include <string.h> |
57 | #include <time.h> |
58 | |
252c122d |
59 | #include <mLib/base64.h> |
d03ab969 |
60 | #include <mLib/mdwopt.h> |
61 | #include <mLib/quis.h> |
62 | #include <mLib/report.h> |
63 | #include <mLib/sub.h> |
64 | |
65 | #include <noise.h> |
66 | #include <rand.h> |
67 | |
252c122d |
68 | #include "bbs.h" |
69 | #include "dsa.h" |
70 | #include "fibrand.h" |
d03ab969 |
71 | #include "getdate.h" |
72 | #include "key.h" |
252c122d |
73 | #include "mp.h" |
74 | #include "mpmont.h" |
75 | #include "mprand.h" |
76 | #include "mptext.h" |
77 | #include "pgen.h" |
78 | #include "rsa.h" |
d03ab969 |
79 | |
80 | /*----- Handy global state ------------------------------------------------*/ |
81 | |
82 | static const char *keyfile = "keyring"; |
83 | |
84 | /*----- Useful shared functions -------------------------------------------*/ |
85 | |
86 | /* --- @doopen@ --- * |
87 | * |
88 | * Arguments: @key_file *f@ = pointer to key file block |
89 | * @unsigned how@ = method to open file with |
90 | * |
91 | * Returns: --- |
92 | * |
93 | * Use: Opens a key file and handles errors by panicking |
94 | * appropriately. |
95 | */ |
96 | |
97 | static void doopen(key_file *f, unsigned how) |
98 | { |
252c122d |
99 | if (key_open(f, keyfile, how, key_moan, 0)) |
d03ab969 |
100 | die(1, "couldn't open file `%s': %s", keyfile, strerror(errno)); |
101 | } |
102 | |
103 | /* --- @doclose@ --- * |
104 | * |
105 | * Arguments: @key_file *f@ = pointer to key file block |
106 | * |
107 | * Returns: --- |
108 | * |
109 | * Use: Closes a key file and handles errors by panicking |
110 | * appropriately. |
111 | */ |
112 | |
113 | static void doclose(key_file *f) |
114 | { |
115 | switch (key_close(f)) { |
116 | case KWRITE_FAIL: |
117 | die(EXIT_FAILURE, "couldn't write file `%s': %s", |
118 | keyfile, strerror(errno)); |
119 | case KWRITE_BROKEN: |
120 | die(EXIT_FAILURE, "keyring file `%s' broken: %s (repair manually)", |
121 | keyfile, strerror(errno)); |
122 | } |
123 | } |
124 | |
125 | /* --- @setattr@ --- * |
126 | * |
127 | * Arguments: @key_file *f@ = pointer to key file block |
128 | * @key *k@ = pointer to key block |
129 | * @char *v[]@ = array of assignments (overwritten!) |
130 | * |
131 | * Returns: --- |
132 | * |
133 | * Use: Applies the attribute assignments to the key. |
134 | */ |
135 | |
136 | static void setattr(key_file *f, key *k, char *v[]) |
137 | { |
138 | while (*v) { |
252c122d |
139 | int err; |
d03ab969 |
140 | char *p = *v; |
141 | size_t eq = strcspn(p, "="); |
142 | if (p[eq] == 0) |
143 | moan("invalid assignment: `%s'", p); |
144 | p[eq] = 0; |
145 | p += eq + 1; |
252c122d |
146 | if ((err = key_putattr(f, k, *v, *p ? p : 0)) != 0) |
147 | die(EXIT_FAILURE, "couldn't set attributes: %s", key_strerror(err)); |
d03ab969 |
148 | v++; |
149 | } |
150 | } |
151 | |
252c122d |
152 | /*----- Key generation ----------------------------------------------------*/ |
153 | |
154 | /* --- Key generation parameters --- */ |
155 | |
156 | typedef struct keyopts { |
157 | key_file *kf; /* Pointer to key file */ |
158 | key *k; /* Pointer to the actual key */ |
159 | dstr tag; /* Full tag name for the key */ |
160 | unsigned f; /* Flags for the new key */ |
161 | unsigned bits, qbits; /* Bit length for the new key */ |
162 | key *p; /* Parameters key-data */ |
163 | } keyopts; |
164 | |
165 | enum { |
166 | f_bogus = 1, /* Error in parsing */ |
167 | f_lock = 2, /* Passphrase-lock private key */ |
168 | f_quiet = 4 /* Don't show a progress indicator */ |
169 | }; |
170 | |
171 | /* --- @dolock@ --- * |
172 | * |
173 | * Arguments: @keyopts *k@ = key generation options |
174 | * @key_data *kd@ = pointer to key data to lock |
175 | * @const char *t@ = tag suffix or null |
176 | * |
177 | * Returns: --- |
178 | * |
179 | * Use: Does passphrase locking on new keys. |
180 | */ |
181 | |
182 | static void dolock(keyopts *k, key_data *kd, const char *t) |
183 | { |
184 | if (!(k->f & f_lock)) |
185 | return; |
186 | if (t) |
187 | dstr_putf(&k->tag, ".%s", t); |
188 | if (key_plock(k->tag.buf, kd, kd)) |
189 | die(EXIT_FAILURE, "couldn't lock key"); |
190 | } |
191 | |
192 | /* --- @mpkey@ --- * |
193 | * |
194 | * Arguments: @key_data *kd@ = pointer to parent key block |
195 | * @const char *tag@ = pointer to tag string |
196 | * @mp *m@ = integer to store |
197 | * @unsigned f@ = flags to set |
198 | * |
199 | * Returns: --- |
200 | * |
201 | * Use: Sets a multiprecision integer subkey. |
202 | */ |
203 | |
204 | static void mpkey(key_data *kd, const char *tag, mp *m, unsigned f) |
205 | { |
206 | key_data *kkd = key_structcreate(kd, tag); |
207 | key_mp(kkd, m); |
208 | kkd->e |= f; |
209 | } |
210 | |
211 | /* --- @copyparam@ --- * |
212 | * |
213 | * Arguments: @keyopts *k@ = pointer to key options |
214 | * @const char **pp@ = checklist of parameters |
215 | * |
216 | * Returns: Nonzero if parameters copied; zero if you have to generate |
217 | * them. |
218 | * |
219 | * Use: Copies parameters from a source key to the current one. |
220 | */ |
221 | |
222 | static int copyparam(keyopts *k, const char **pp) |
223 | { |
224 | key_filter kf; |
225 | |
226 | /* --- Quick check if no parameters supplied --- */ |
227 | |
228 | if (!k->p) |
229 | return (0); |
230 | |
231 | /* --- Run through the checklist --- */ |
232 | |
233 | while (*pp) { |
234 | key_data *kd = key_structfind(&k->p->k, *pp); |
235 | if (!kd) |
236 | die(EXIT_FAILURE, "bad parameter key: parameter `%s' not found", *pp); |
237 | if ((kd->e & KF_CATMASK) != KCAT_SHARE) |
238 | die(EXIT_FAILURE, "bad parameter key: subkey `%s' is not shared", *pp); |
239 | pp++; |
240 | } |
241 | |
242 | /* --- Copy over the parameters --- */ |
243 | |
244 | kf.f = KCAT_SHARE; |
245 | kf.m = KF_CATMASK; |
246 | if (!key_copy(&k->k->k, &k->p->k, &kf)) |
247 | die(EXIT_FAILURE, "unexpected failure while copying parameters"); |
248 | return (1); |
249 | } |
250 | |
251 | /* --- @getmp@ --- * |
252 | * |
253 | * Arguments: @key_data *k@ = pointer to key data block |
254 | * @const char *tag@ = tag string to use |
255 | * |
256 | * Returns: Pointer to multiprecision integer key item. |
257 | * |
258 | * Use: Fetches an MP key component. |
259 | */ |
260 | |
261 | static mp *getmp(key_data *k, const char *tag) |
262 | { |
263 | k = key_structfind(k, tag); |
264 | if (!k) |
265 | die(EXIT_FAILURE, "unexpected failure looking up subkey `%s'", tag); |
266 | if ((k->e & KF_ENCMASK) != KENC_MP) |
267 | die(EXIT_FAILURE, "subkey `%s' has an incompatible type"); |
268 | return (k->u.m); |
269 | } |
270 | |
271 | /* --- Key generation algorithms --- */ |
272 | |
273 | static void alg_binary(keyopts *k) |
274 | { |
275 | unsigned sz; |
276 | unsigned m; |
277 | octet *p; |
278 | |
279 | if (!k->bits) |
280 | k->bits = 128; |
281 | if (k->p) |
282 | die(EXIT_FAILURE, "no shared parameters for binary keys"); |
283 | |
284 | sz = (k->bits + 7) >> 3; |
285 | p = sub_alloc(sz); |
286 | m = (1 << (((k->bits - 1) & 7) + 1)) - 1; |
287 | rand_getgood(RAND_GLOBAL, p, sz); |
288 | *p &= m; |
289 | key_binary(&k->k->k, p, sz); |
290 | k->k->k.e |= KCAT_SYMM | KF_BURN; |
291 | memset(p, 0, sz); |
292 | sub_free(p, sz); |
293 | dolock(k, &k->k->k, 0); |
294 | } |
295 | |
296 | static void alg_des(keyopts *k) |
297 | { |
298 | unsigned sz; |
299 | octet *p; |
300 | int i; |
301 | |
302 | if (!k->bits) |
303 | k->bits = 112; |
304 | if (k->p) |
305 | die(EXIT_FAILURE, "no shared parameters for DES keys"); |
306 | if (k->bits % 56 || k->bits > 168) |
307 | die(EXIT_FAILURE, "DES keys must be 56, 112 or 168 bits long"); |
308 | |
309 | sz = k->bits / 7; |
310 | p = sub_alloc(sz); |
311 | rand_getgood(RAND_GLOBAL, p, sz); /* Too much work done here! */ |
312 | for (i = 0; i < sz; i++) { |
313 | octet x = p[i] & 0xfe; |
314 | x = x ^ (x >> 4); |
315 | x = x ^ (x >> 2); |
316 | x = x ^ (x >> 1) ^ 1; |
317 | p[i] = (p[i] & 0xfe) | (x & 0x01); |
318 | } |
319 | key_binary(&k->k->k, p, sz); |
320 | k->k->k.e |= KCAT_SYMM | KF_BURN; |
321 | memset(p, 0, sz); |
322 | sub_free(p, sz); |
323 | dolock(k, &k->k->k, 0); |
324 | } |
325 | |
326 | static void alg_rsa(keyopts *k) |
327 | { |
328 | rsa_param rp; |
329 | key_data *kd; |
330 | |
331 | /* --- Sanity checking --- */ |
332 | |
333 | if (k->p) |
334 | die(EXIT_FAILURE, "no shared parameters for RSA keys"); |
335 | if (!k->bits) |
336 | k->bits = 1024; |
337 | |
338 | /* --- Generate the RSA parameters --- */ |
339 | |
340 | if (rsa_gen(&rp, k->bits, &rand_global, 0, |
341 | (k->f & f_quiet) ? 0 : pgen_ev, 0)) |
342 | die(EXIT_FAILURE, "RSA key generation failed"); |
343 | |
344 | /* --- Run a test encryption --- */ |
345 | |
346 | { |
347 | grand *g = fibrand_create(rand_global.ops->word(&rand_global)); |
348 | mpmont mm; |
349 | mp *m = mprand_range(MP_NEW, rp.n, g, 0); |
350 | mp *c; |
351 | |
352 | /* --- Encrypt the plaintext --- */ |
353 | |
354 | mpmont_create(&mm, rp.n); |
355 | c = mpmont_exp(&mm, MP_NEW, m, rp.e); |
356 | mpmont_destroy(&mm); |
357 | |
358 | /* --- Decrypt the ciphertext --- */ |
359 | |
360 | c = rsa_decrypt(&rp, c, c, g); |
361 | |
362 | /* --- Check everything went OK --- */ |
363 | |
364 | if (MP_CMP(c, !=, m)) |
365 | die(EXIT_FAILURE, "test encryption failed"); |
366 | mp_drop(c); |
367 | mp_drop(m); |
368 | g->ops->destroy(g); |
369 | } |
370 | |
371 | /* --- Allrighty then --- */ |
372 | |
373 | kd = &k->k->k; |
374 | key_structure(kd); |
375 | mpkey(kd, "n", rp.n, KCAT_PUB); |
376 | mpkey(kd, "e", rp.e, KCAT_PUB); |
377 | |
378 | kd = key_structcreate(kd, "private"); |
379 | key_structure(kd); |
380 | mpkey(kd, "d", rp.d, KCAT_PRIV | KF_BURN); |
381 | mpkey(kd, "p", rp.p, KCAT_PRIV | KF_BURN); |
382 | mpkey(kd, "q", rp.q, KCAT_PRIV | KF_BURN); |
383 | mpkey(kd, "q-inv", rp.q_inv, KCAT_PRIV | KF_BURN); |
384 | mpkey(kd, "d-mod-p", rp.dp, KCAT_PRIV | KF_BURN); |
385 | mpkey(kd, "d-mod-q", rp.dq, KCAT_PRIV | KF_BURN); |
386 | dolock(k, kd, "private"); |
387 | |
388 | mp_drop(rp.p); mp_drop(rp.q); mp_drop(rp.n); mp_drop(rp.q_inv); |
389 | mp_drop(rp.e); mp_drop(rp.d); mp_drop(rp.dp); mp_drop(rp.dq); |
390 | } |
391 | |
392 | static void alg_dsaparam(keyopts *k) |
393 | { |
394 | static const char *pl[] = { "q", "p", "g", 0 }; |
395 | if (!copyparam(k, pl)) { |
396 | dsa_param dp; |
397 | octet *p; |
398 | size_t sz; |
399 | dstr d = DSTR_INIT; |
400 | base64_ctx c; |
401 | key_data *kd = &k->k->k; |
402 | |
403 | /* --- Choose appropriate bit lengths if necessary --- */ |
404 | |
405 | if (!k->qbits) |
406 | k->qbits = 160; |
407 | if (!k->bits) |
408 | k->bits = 768; |
409 | |
410 | /* --- Allocate a seed block --- */ |
411 | |
412 | sz = (k->qbits + 7) >> 3; |
413 | p = sub_alloc(sz); |
414 | rand_getgood(RAND_GLOBAL, p, sz); |
415 | |
416 | /* --- Allocate the parameters --- */ |
417 | |
418 | if (dsa_seed(&dp, k->qbits, k->bits, 0, p, sz, |
419 | (k->f & f_quiet) ? 0 : pgen_ev, 0)) |
420 | die(EXIT_FAILURE, "DSA parameter generation failed"); |
421 | |
422 | /* --- Store the parameters --- */ |
423 | |
424 | key_structure(kd); |
425 | mpkey(kd, "q", dp.q, KCAT_SHARE); |
426 | mpkey(kd, "p", dp.p, KCAT_SHARE); |
427 | mpkey(kd, "g", dp.g, KCAT_SHARE); |
428 | mp_drop(dp.q); |
429 | mp_drop(dp.p); |
430 | mp_drop(dp.g); |
431 | |
432 | /* --- Store the seed for future verification --- */ |
433 | |
434 | base64_init(&c); |
435 | c.maxline = 0; |
436 | c.indent = ""; |
437 | base64_encode(&c, p, sz, &d); |
438 | base64_encode(&c, 0, 0, &d); |
439 | key_putattr(k->kf, k->k, "seed", d.buf); |
440 | sub_free(p, sz); |
441 | dstr_destroy(&d); |
442 | } |
443 | } |
444 | |
445 | static void alg_dsa(keyopts *k) |
446 | { |
447 | mp *q, *p, *g; |
448 | mp *x, *y; |
449 | mpmont mm; |
450 | key_data *kd = &k->k->k; |
451 | |
452 | /* --- Get the shared parameters --- */ |
453 | |
454 | alg_dsaparam(k); |
455 | q = getmp(kd, "q"); |
456 | p = getmp(kd, "p"); |
457 | g = getmp(kd, "g"); |
458 | |
459 | /* --- Choose a private key --- */ |
460 | |
461 | x = mprand_range(MP_NEW, q, &rand_global, 0); |
462 | mp_burn(x); |
463 | mpmont_create(&mm, p); |
464 | y = mpmont_exp(&mm, MP_NEW, g, x); |
465 | |
466 | /* --- Store everything away --- */ |
467 | |
468 | mpkey(kd, "y", y, KCAT_PUB); |
469 | |
470 | kd = key_structcreate(kd, "private"); |
471 | key_structure(kd); |
472 | mpkey(kd, "x", x, KCAT_PRIV | KF_BURN); |
473 | dolock(k, kd, "private"); |
474 | } |
475 | |
476 | static void alg_dhparam(keyopts *k) |
477 | { |
478 | static const char *pl[] = { "p", "g", 0 }; |
479 | if (!copyparam(k, pl)) { |
480 | pgen_safetestctx c; |
481 | mp *p, *q; |
482 | key_data *kd = &k->k->k; |
483 | |
484 | if (!k->bits) |
485 | k->bits = 1024; |
486 | |
487 | /* --- Choose a large safe prime number --- */ |
488 | |
489 | q = MP_NEW; |
490 | q = mprand(q, k->bits, &rand_global, 3); |
491 | p = pgen("p", MP_NEW, q, (k->f & f_quiet) ? 0 : pgen_ev, 0, |
492 | 0, pgen_safestep, &c.c, |
493 | rabin_iters(k->bits), pgen_safetest, &c); |
494 | if (!p) |
495 | die(EXIT_FAILURE, "Diffie-Hellman parameter generation failed"); |
496 | |
497 | key_structure(kd); |
498 | mpkey(kd, "p", p, KCAT_SHARE); |
499 | mp_drop(q); |
500 | mp_drop(p); |
501 | |
502 | /* --- The generator 4 is good --- * |
503 | * |
504 | * Since 4 is clearly a quadratic residue, and %$p = 2q + 1$% for prime |
505 | * %$q$%, the number 4 has order %$q$%. This is better than choosing a |
506 | * real primitive element, because it could conceivably be trapped in an |
507 | * order-2 subgroup. (Not very likely, I'll admit, but possible.) |
508 | */ |
509 | |
510 | mpkey(kd, "g", MP_FOUR, KCAT_SHARE); |
511 | } |
512 | } |
513 | |
514 | static void alg_dh(keyopts *k) |
515 | { |
516 | mp *x, *y; |
517 | mp *p, *g; |
518 | mpmont mm; |
519 | key_data *kd = &k->k->k; |
520 | |
521 | /* --- Get the shared parameters --- */ |
522 | |
523 | alg_dhparam(k); |
524 | p = getmp(kd, "p"); |
525 | g = getmp(kd, "g"); |
526 | |
527 | /* --- Choose a suitable private key --- * |
528 | * |
529 | * Since %$g$% has order %$q$%, choose %$x < q$%. |
530 | */ |
531 | |
532 | y = mp_lsr(MP_NEW, p, 1); |
533 | x = mprand_range(MP_NEW, y, &rand_global, 0); |
534 | mp_burn(x); |
535 | |
536 | /* --- Compute the public key %$y = g^x \bmod p$% --- */ |
537 | |
538 | mpmont_create(&mm, p); |
539 | y = mpmont_exp(&mm, y, g, x); |
540 | mpmont_destroy(&mm); |
541 | |
542 | /* --- Store everything away --- */ |
543 | |
544 | mpkey(kd, "y", y, KCAT_PUB); |
545 | |
546 | kd = key_structcreate(kd, "private"); |
547 | key_structure(kd); |
548 | mpkey(kd, "x", x, KCAT_PRIV | KF_BURN); |
549 | dolock(k, kd, "private"); |
550 | } |
551 | |
552 | static void alg_bbs(keyopts *k) |
553 | { |
554 | bbs_param bp; |
555 | key_data *kd; |
556 | mp *p, *q; |
557 | |
558 | /* --- Sanity checking --- */ |
559 | |
560 | if (k->p) |
561 | die(EXIT_FAILURE, "no shared parameters for Blum-Blum-Shub keys"); |
562 | if (!k->bits) |
563 | k->bits = 1024; |
564 | |
565 | /* --- Generate the BBS parameters --- */ |
566 | |
567 | p = mprand(MP_NEW, k->bits / 2, &rand_global, 3); |
568 | q = mprand(MP_NEW, k->bits - k->bits / 2, &rand_global, 3); |
569 | mp_burn(p); mp_burn(q); |
570 | if (bbs_gen(&bp, p, q, 0, (k->f & f_quiet) ? 0 : pgen_ev, 0)) |
571 | die(EXIT_FAILURE, "Blum-Blum-Shub key generation failed"); |
572 | mp_drop(p); mp_drop(q); |
573 | |
574 | /* --- Allrighty then --- */ |
575 | |
576 | kd = &k->k->k; |
577 | key_structure(kd); |
578 | mpkey(kd, "n", bp.n, KCAT_PUB); |
579 | |
580 | kd = key_structcreate(kd, "private"); |
581 | key_structure(kd); |
582 | mpkey(kd, "p", bp.p, KCAT_PRIV | KF_BURN); |
583 | mpkey(kd, "q", bp.q, KCAT_PRIV | KF_BURN); |
584 | dolock(k, kd, "private"); |
585 | |
586 | mp_drop(bp.p); mp_drop(bp.q); mp_drop(bp.n); |
587 | } |
588 | |
589 | /* --- The algorithm tables --- */ |
590 | |
591 | typedef struct keyalg { |
592 | const char *name; |
593 | void (*proc)(keyopts *o); |
594 | const char *help; |
595 | } keyalg; |
596 | |
597 | static keyalg algtab[] = { |
598 | { "binary", alg_binary, "Plain binary data" }, |
599 | { "des", alg_des, "Binary with DES-style parity" }, |
600 | { "rsa", alg_rsa, "RSA public-key encryption" }, |
601 | { "dsa", alg_dsa, "DSA digital signatures" }, |
602 | { "dsa-param", alg_dsaparam, "DSA shared parameters" }, |
603 | { "dh", alg_dh, "Diffie-Hellman key exchange" }, |
604 | { "dh-param", alg_dhparam, "Diffie-Hellman parameters" }, |
605 | { "bbs", alg_bbs, "Blum-Blum-Shub generator" }, |
606 | { 0, 0 } |
607 | }; |
d03ab969 |
608 | |
609 | /* --- @cmd_add@ --- */ |
610 | |
611 | static int cmd_add(int argc, char *argv[]) |
612 | { |
613 | key_file f; |
d03ab969 |
614 | time_t exp = KEXP_EXPIRE; |
252c122d |
615 | const char *tag = 0, *ptag = 0; |
d03ab969 |
616 | const char *c = 0; |
252c122d |
617 | keyalg *alg = algtab; |
618 | keyopts k = { 0, 0, DSTR_INIT, 0, 0, 0, 0 }; |
d03ab969 |
619 | |
620 | /* --- Parse options for the subcommand --- */ |
621 | |
622 | for (;;) { |
623 | static struct option opt[] = { |
252c122d |
624 | { "algorithm", OPTF_ARGREQ, 0, 'a' }, |
d03ab969 |
625 | { "bits", OPTF_ARGREQ, 0, 'b' }, |
252c122d |
626 | { "qbits", OPTF_ARGREQ, 0, 'B' }, |
627 | { "parameters", OPTF_ARGREQ, 0, 'p' }, |
d03ab969 |
628 | { "expire", OPTF_ARGREQ, 0, 'e' }, |
629 | { "comment", OPTF_ARGREQ, 0, 'c' }, |
252c122d |
630 | { "tag", OPTF_ARGREQ, 0, 't' }, |
631 | { "lock", 0, 0, 'l' }, |
632 | { "quiet", 0, 0, 'q' }, |
d03ab969 |
633 | { 0, 0, 0, 0 } |
634 | }; |
252c122d |
635 | int i = mdwopt(argc, argv, "+a:b:B:p:e:c:t:l", opt, 0, 0, 0); |
d03ab969 |
636 | if (i < 0) |
637 | break; |
638 | |
639 | /* --- Handle the various options --- */ |
640 | |
641 | switch (i) { |
642 | |
252c122d |
643 | /* --- Read an algorithm name --- */ |
644 | |
645 | case 'a': { |
646 | keyalg *a; |
647 | size_t sz = strlen(optarg); |
648 | |
649 | if (strcmp(optarg, "list") == 0) { |
650 | for (a = algtab; a->name; a++) |
651 | printf("%-10s %s\n", a->name, a->help); |
652 | return (0); |
653 | } |
654 | |
655 | alg = 0; |
656 | for (a = algtab; a->name; a++) { |
657 | if (strncmp(optarg, a->name, sz) == 0) { |
658 | if (a->name[sz] == 0) { |
659 | alg = a; |
660 | break; |
661 | } else if (alg) |
662 | die(EXIT_FAILURE, "ambiguous algorithm name `%s'", optarg); |
663 | else |
664 | alg = a; |
665 | } |
666 | } |
667 | if (!alg) |
668 | die(EXIT_FAILURE, "unknown algorithm name `%s'", optarg); |
669 | } break; |
670 | |
d03ab969 |
671 | /* --- Bits must be nonzero and a multiple of 8 --- */ |
672 | |
252c122d |
673 | case 'b': { |
674 | char *p; |
675 | k.bits = strtoul(optarg, &p, 0); |
676 | if (k.bits == 0 || *p != 0) |
677 | die(EXIT_FAILURE, "bad bitlength `%s'", optarg); |
678 | } break; |
679 | |
680 | case 'B': { |
681 | char *p; |
682 | k.qbits = strtoul(optarg, &p, 0); |
683 | if (k.qbits == 0 || *p != 0) |
684 | die(EXIT_FAILURE, "bad bitlength `%s'", optarg); |
685 | } break; |
686 | |
687 | /* --- Parameter selection --- */ |
688 | |
689 | case 'p': |
690 | ptag = optarg; |
d03ab969 |
691 | break; |
692 | |
693 | /* --- Expiry dates get passed to @get_date@ for parsing --- */ |
694 | |
695 | case 'e': |
252c122d |
696 | if (strncmp(optarg, "forever", strlen(optarg)) == 0) |
d03ab969 |
697 | exp = KEXP_FOREVER; |
698 | else { |
699 | exp = get_date(optarg, 0); |
700 | if (exp == -1) |
252c122d |
701 | die(EXIT_FAILURE, "bad expiry date `%s'", optarg); |
d03ab969 |
702 | } |
703 | break; |
704 | |
705 | /* --- Store comments without interpretation --- */ |
706 | |
707 | case 'c': |
252c122d |
708 | if (key_chkcomment(optarg)) |
709 | die(EXIT_FAILURE, "bad comment string `%s'", optarg); |
d03ab969 |
710 | c = optarg; |
711 | break; |
712 | |
252c122d |
713 | /* --- Store tags --- */ |
714 | |
715 | case 't': |
716 | if (key_chkident(optarg)) |
717 | die(EXIT_FAILURE, "bad tag string `%s'", optarg); |
718 | tag = optarg; |
719 | break; |
720 | |
721 | /* --- Other flags --- */ |
722 | |
723 | case 'l': |
724 | k.f |= f_lock; |
725 | break; |
726 | case 'q': |
727 | k.f |= f_quiet; |
728 | break; |
729 | |
d03ab969 |
730 | /* --- Other things are bogus --- */ |
731 | |
732 | default: |
252c122d |
733 | k.f |= f_bogus; |
d03ab969 |
734 | break; |
735 | } |
736 | } |
737 | |
252c122d |
738 | /* --- Various sorts of bogosity --- */ |
d03ab969 |
739 | |
252c122d |
740 | if ((k.f & f_bogus) || optind + 1 > argc) { |
d03ab969 |
741 | die(EXIT_FAILURE, |
252c122d |
742 | "Usage: add [options] type [attr...]"); |
d03ab969 |
743 | } |
252c122d |
744 | if (key_chkident(argv[optind])) |
745 | die(EXIT_FAILURE, "bad key type `%s'", argv[optind]); |
746 | |
747 | /* --- Set up various bits of the state --- */ |
748 | |
d03ab969 |
749 | if (exp == KEXP_EXPIRE) |
750 | exp = time(0) + 14 * 24 * 60 * 60; |
751 | |
252c122d |
752 | /* --- Open the file and create the basic key block --- * |
753 | * |
754 | * Keep on generating keyids until one of them doesn't collide. |
755 | */ |
d03ab969 |
756 | |
252c122d |
757 | doopen(&f, KOPEN_WRITE); |
758 | k.kf = &f; |
759 | |
760 | for (;;) { |
761 | uint32 id = rand_global.ops->word(&rand_global); |
762 | int err; |
763 | k.k = key_new(&f, id, argv[optind], exp, &err); |
764 | if (k.k) |
765 | break; |
766 | if (err != KERR_DUPID) |
767 | die(EXIT_FAILURE, "error adding new key: %s", key_strerror(err)); |
768 | } |
d03ab969 |
769 | |
252c122d |
770 | /* --- Set various simple attributes --- */ |
d03ab969 |
771 | |
252c122d |
772 | if (tag) { |
773 | int err = key_settag(&f, k.k, tag); |
774 | if (err) |
775 | die(EXIT_FAILURE, "error setting key tag: %s", key_strerror(err)); |
776 | } |
d03ab969 |
777 | |
252c122d |
778 | if (c) { |
779 | int err = key_setcomment(&f, k.k, c); |
780 | if (err) |
781 | die(EXIT_FAILURE, "error setting key comment: %s", key_strerror(err)); |
782 | } |
783 | |
784 | setattr(&f, k.k, argv + optind + 1); |
785 | |
786 | key_fulltag(k.k, &k.tag); |
787 | |
788 | /* --- Find the parameter key --- */ |
789 | |
790 | if (ptag) { |
791 | if ((k.p = key_bytag(&f, ptag)) == 0) |
792 | die(EXIT_FAILURE, "parameter key `%s' not found", ptag); |
793 | if ((k.p->k.e & KF_ENCMASK) != KENC_STRUCT) |
794 | die(EXIT_FAILURE, "parameter key `%s' is not structured", ptag); |
795 | } |
796 | |
797 | /* --- Now generate the actual key data --- */ |
798 | |
799 | alg->proc(&k); |
800 | |
801 | /* --- Done --- */ |
d03ab969 |
802 | |
d03ab969 |
803 | doclose(&f); |
804 | return (0); |
805 | } |
806 | |
252c122d |
807 | /*----- Key listing -------------------------------------------------------*/ |
808 | |
809 | /* --- Listing options --- */ |
810 | |
811 | typedef struct listopts { |
812 | const char *tfmt; /* Date format (@strftime@-style) */ |
813 | int v; /* Verbosity level */ |
814 | unsigned f; /* Various flags */ |
815 | time_t t; /* Time now (for key expiry) */ |
816 | key_filter kf; /* Filter for matching keys */ |
817 | } listopts; |
818 | |
819 | /* --- Listing flags --- */ |
820 | |
821 | enum { |
822 | f_newline = 2, /* Write newline before next entry */ |
823 | f_attr = 4, /* Written at least one attribute */ |
824 | f_utc = 8 /* Emit UTC time, not local time */ |
825 | }; |
826 | |
827 | /* --- @showkeydata@ --- * |
828 | * |
829 | * Arguments: @key_data *k@ = pointer to key to write |
830 | * @int ind@ = indentation level |
831 | * @listopts *o@ = listing options |
832 | * @dstr *d@ = tag string for this subkey |
833 | * |
834 | * Returns: --- |
835 | * |
836 | * Use: Emits a piece of key data in a human-readable format. |
837 | */ |
838 | |
839 | static void showkeydata(key_data *k, int ind, listopts *o, dstr *d) |
840 | { |
841 | #define INDENT(i) do { \ |
842 | int _i; \ |
843 | for (_i = 0; _i < (i); _i++) { \ |
844 | putchar(' '); \ |
845 | } \ |
846 | } while (0) |
847 | |
848 | switch (k->e & KF_ENCMASK) { |
849 | |
850 | /* --- Binary key data --- * |
851 | * |
852 | * Emit as a simple hex dump. |
853 | */ |
854 | |
855 | case KENC_BINARY: { |
856 | const octet *p = k->u.k.k; |
857 | const octet *l = p + k->u.k.sz; |
858 | size_t sz = 0; |
859 | |
860 | fputs(" {", stdout); |
861 | while (p < l) { |
862 | if (sz % 16 == 0) { |
863 | putchar('\n'); |
864 | INDENT(ind + 2); |
865 | } else if (sz % 8 == 0) |
866 | fputs(" ", stdout); |
867 | else |
868 | putc(' ', stdout); |
869 | printf("%02x", *p++); |
870 | sz++; |
871 | } |
872 | putchar('\n'); |
873 | INDENT(ind); |
874 | fputs("}\n", stdout); |
875 | } break; |
876 | |
877 | /* --- Encrypted data --- * |
878 | * |
879 | * If the user is sufficiently keen, ask for a passphrase and decrypt the |
880 | * key. Otherwise just say that it's encrypted and move on. |
881 | */ |
882 | |
883 | case KENC_ENCRYPT: |
884 | if (o->v <= 3) |
885 | fputs(" encrypted\n", stdout); |
886 | else { |
887 | key_data kd; |
888 | if (key_punlock(d->buf, k, &kd)) |
889 | printf(" <failed to unlock %s>\n", d->buf); |
890 | else { |
891 | fputs(" encrypted", stdout); |
892 | showkeydata(&kd, ind, o, d); |
893 | key_destroy(&kd); |
894 | } |
895 | } |
896 | break; |
897 | |
898 | /* --- Integer keys --- * |
899 | * |
900 | * Emit as a large integer in decimal. This makes using the key in |
901 | * `calc' or whatever easier. |
902 | */ |
903 | |
904 | case KENC_MP: |
905 | putchar(' '); |
906 | mp_writefile(k->u.m, stdout, 10); |
907 | putchar('\n'); |
908 | break; |
909 | |
910 | /* --- Structured keys --- * |
911 | * |
912 | * Just iterate over the subkeys. |
913 | */ |
914 | |
915 | case KENC_STRUCT: { |
916 | sym_iter i; |
917 | key_struct *ks; |
918 | size_t n = d->len; |
919 | |
920 | fputs(" {\n", stdout); |
921 | for (sym_mkiter(&i, &k->u.s); (ks = sym_next(&i)) != 0; ) { |
922 | if (!key_match(&ks->k, &o->kf)) |
923 | continue; |
924 | INDENT(ind + 2); |
925 | printf("%s =", SYM_NAME(ks)); |
926 | d->len = n; |
927 | dstr_putf(d, ".%s", SYM_NAME(ks)); |
928 | showkeydata(&ks->k, ind + 2, o, d); |
929 | } |
930 | INDENT(ind); |
931 | fputs("}\n", stdout); |
932 | } break; |
933 | } |
934 | |
935 | #undef INDENT |
936 | } |
937 | |
938 | /* --- @showkey@ --- * |
939 | * |
940 | * Arguments: @key *k@ = pointer to key to show |
941 | * @listopts *o@ = pointer to listing options |
942 | * |
943 | * Returns: --- |
944 | * |
945 | * Use: Emits a listing of a particular key. |
946 | */ |
947 | |
948 | static void showkey(key *k, listopts *o) |
949 | { |
950 | char ebuf[24], dbuf[24]; |
951 | struct tm *tm; |
952 | |
953 | /* --- Skip the key if the filter doesn't match --- */ |
954 | |
955 | if (!key_match(&k->k, &o->kf)) |
956 | return; |
957 | |
958 | /* --- Sort out the expiry and deletion times --- */ |
959 | |
960 | if (KEY_EXPIRED(o->t, k->exp)) |
961 | strcpy(ebuf, "expired"); |
962 | else if (k->exp == KEXP_FOREVER) |
963 | strcpy(ebuf, "forever"); |
964 | else { |
965 | tm = (o->f & f_utc) ? gmtime(&k->exp) : localtime(&k->exp); |
966 | strftime(ebuf, sizeof(ebuf), o->tfmt, tm); |
967 | } |
968 | |
969 | if (KEY_EXPIRED(o->t, k->del)) |
970 | strcpy(dbuf, "deleted"); |
971 | else if (k->del == KEXP_FOREVER) |
972 | strcpy(dbuf, "forever"); |
973 | else { |
974 | tm = (o->f & f_utc) ? gmtime(&k->del) : localtime(&k->del); |
975 | strftime(dbuf, sizeof(dbuf), o->tfmt, tm); |
976 | } |
977 | |
978 | /* --- If in compact format, just display and quit --- */ |
979 | |
980 | if (!o->v) { |
981 | if (!(o->f & f_newline)) { |
982 | printf("%8s %-20s %-20s %-10s %-10s\n", |
983 | "Id", "Tag", "Type", "Expire", "Delete"); |
984 | } |
985 | printf("%08lx %-20s %-20s %-10s %-10s\n", |
986 | (unsigned long)k->id, k->tag ? k->tag : "<none>", |
987 | k->type, ebuf, dbuf); |
988 | o->f |= f_newline; |
989 | return; |
990 | } |
991 | |
992 | /* --- Display the standard header --- */ |
993 | |
994 | if (o->f & f_newline) |
995 | fputc('\n', stdout); |
996 | printf("keyid: %08lx\n", (unsigned long)k->id); |
997 | printf("tag: %s\n", k->tag ? k->tag : "<none>"); |
998 | printf("type: %s\n", k->type); |
999 | printf("expiry: %s\n", ebuf); |
1000 | printf("delete: %s\n", dbuf); |
1001 | printf("comment: %s\n", k->c ? k->c : "<none>"); |
1002 | |
1003 | /* --- Display the attributes --- */ |
1004 | |
1005 | if (o->v > 1) { |
1006 | key_attriter i; |
1007 | const char *av, *an; |
1008 | |
1009 | o->f &= ~f_attr; |
1010 | printf("attributes:"); |
1011 | for (key_mkattriter(&i, k); key_nextattr(&i, &an, &av); ) { |
1012 | printf("\n\t%s = %s", an, av); |
1013 | o->f |= f_attr; |
1014 | } |
1015 | if (o->f & f_attr) |
1016 | fputc('\n', stdout); |
1017 | else |
1018 | puts(" <none>"); |
1019 | } |
1020 | |
1021 | /* --- If dumping requested, dump the raw key data --- */ |
1022 | |
1023 | if (o->v > 2) { |
1024 | dstr d = DSTR_INIT; |
1025 | fputs("key:", stdout); |
1026 | key_fulltag(k, &d); |
1027 | showkeydata(&k->k, 0, o, &d); |
1028 | dstr_destroy(&d); |
1029 | } |
1030 | |
1031 | o->f |= f_newline; |
1032 | } |
1033 | |
1034 | /* --- @cmd_list@ --- */ |
1035 | |
1036 | static int cmd_list(int argc, char *argv[]) |
1037 | { |
1038 | key_file f; |
1039 | key *k; |
1040 | listopts o = { 0, 0, 0, 0, { 0, 0 } }; |
1041 | |
1042 | /* --- Parse subcommand options --- */ |
1043 | |
1044 | for (;;) { |
1045 | static struct option opt[] = { |
1046 | { "quiet", 0, 0, 'q' }, |
1047 | { "verbose", 0, 0, 'v' }, |
1048 | { "utc", 0, 0, 'u' }, |
1049 | { "filter", OPTF_ARGREQ, 0, 'f' }, |
1050 | { 0, 0, 0, 0 } |
1051 | }; |
1052 | int i = mdwopt(argc, argv, "+uqvf:", opt, 0, 0, 0); |
1053 | if (i < 0) |
1054 | break; |
1055 | |
1056 | switch (i) { |
1057 | case 'u': |
1058 | o.f |= f_utc; |
1059 | break; |
1060 | case 'q': |
1061 | if (o.v) |
1062 | o.v--; |
1063 | break; |
1064 | case 'v': |
1065 | o.v++; |
1066 | break; |
1067 | case 'f': { |
1068 | char *p; |
1069 | int e = key_readflags(optarg, &p, &o.kf.f, &o.kf.m); |
1070 | if (e || *p) |
1071 | die(EXIT_FAILURE, "bad filter string `%s'", optarg); |
1072 | } break; |
1073 | default: |
1074 | o.f |= f_bogus; |
1075 | break; |
1076 | } |
1077 | } |
1078 | |
1079 | if (o.f & f_bogus) |
1080 | die(EXIT_FAILURE, "Usage: list [-uqv] [-f filter] [tag...]"); |
1081 | |
1082 | /* --- Open the key file --- */ |
1083 | |
1084 | doopen(&f, KOPEN_READ); |
1085 | o.t = time(0); |
1086 | |
1087 | /* --- Set up the time format --- */ |
1088 | |
1089 | if (!o.v) |
1090 | o.tfmt = "%Y-%m-%d"; |
1091 | else if (o.f & f_utc) |
1092 | o.tfmt = "%Y-%m-%d %H:%M:%S UTC"; |
1093 | else |
1094 | o.tfmt = "%Y-%m-%d %H:%M:%S %Z"; |
1095 | |
1096 | /* --- If specific keys were requested use them, otherwise do all --- * |
1097 | * |
1098 | * Some day, this might turn into a wildcard match. |
1099 | */ |
1100 | |
1101 | if (optind < argc) { |
1102 | do { |
1103 | if ((k = key_bytag(&f, argv[optind])) != 0) |
1104 | showkey(k, &o); |
1105 | else { |
1106 | moan("key `%s' not found", argv[optind]); |
1107 | o.f |= f_bogus; |
1108 | } |
1109 | optind++; |
1110 | } while (optind < argc); |
1111 | } else { |
1112 | key_iter i; |
1113 | for (key_mkiter(&i, &f); (k = key_next(&i)) != 0; ) |
1114 | showkey(k, &o); |
1115 | } |
1116 | |
1117 | /* --- Done --- */ |
1118 | |
1119 | doclose(&f); |
1120 | if (o.f & f_bogus) |
1121 | return (EXIT_FAILURE); |
1122 | else |
1123 | return (0); |
1124 | } |
1125 | |
1126 | /*----- Command implementation --------------------------------------------*/ |
1127 | |
d03ab969 |
1128 | /* --- @cmd_expire@ --- */ |
1129 | |
1130 | static int cmd_expire(int argc, char *argv[]) |
1131 | { |
1132 | key_file f; |
1133 | key *k; |
d03ab969 |
1134 | int i; |
1135 | int rc = 0; |
1136 | |
1137 | if (argc < 2) |
252c122d |
1138 | die(EXIT_FAILURE, "Usage: expire tag..."); |
d03ab969 |
1139 | doopen(&f, KOPEN_WRITE); |
1140 | for (i = 1; i < argc; i++) { |
252c122d |
1141 | if ((k = key_bytag(&f, argv[i])) != 0) |
d03ab969 |
1142 | key_expire(&f, k); |
1143 | else { |
252c122d |
1144 | moan("key `%s' not found", argv[i]); |
d03ab969 |
1145 | rc = 1; |
1146 | } |
1147 | } |
1148 | doclose(&f); |
1149 | return (rc); |
1150 | } |
1151 | |
1152 | /* --- @cmd_delete@ --- */ |
1153 | |
1154 | static int cmd_delete(int argc, char *argv[]) |
1155 | { |
1156 | key_file f; |
1157 | key *k; |
d03ab969 |
1158 | int i; |
1159 | int rc = 0; |
1160 | |
1161 | if (argc < 2) |
252c122d |
1162 | die(EXIT_FAILURE, "Usage: delete tag..."); |
d03ab969 |
1163 | doopen(&f, KOPEN_WRITE); |
1164 | for (i = 1; i < argc; i++) { |
252c122d |
1165 | if ((k = key_bytag(&f, argv[i])) != 0) |
d03ab969 |
1166 | key_delete(&f, k); |
1167 | else { |
252c122d |
1168 | moan("key `%s' not found", argv[i]); |
d03ab969 |
1169 | rc = 1; |
1170 | } |
1171 | } |
1172 | doclose(&f); |
1173 | return (rc); |
1174 | } |
1175 | |
1176 | /* --- @cmd_setattr@ --- */ |
1177 | |
1178 | static int cmd_setattr(int argc, char *argv[]) |
1179 | { |
1180 | key_file f; |
1181 | key *k; |
d03ab969 |
1182 | |
1183 | if (argc < 3) |
252c122d |
1184 | die(EXIT_FAILURE, "Usage: setattr tag attr..."); |
d03ab969 |
1185 | doopen(&f, KOPEN_WRITE); |
252c122d |
1186 | if ((k = key_bytag(&f, argv[1])) == 0) |
1187 | die(EXIT_FAILURE, "key `%s' not found", argv[1]); |
d03ab969 |
1188 | setattr(&f, k, argv + 2); |
1189 | doclose(&f); |
1190 | return (0); |
1191 | } |
1192 | |
252c122d |
1193 | /* --- @cmd_finger@ --- */ |
d03ab969 |
1194 | |
252c122d |
1195 | static int fpkey(key_data *kd, dstr *d, void *p) |
d03ab969 |
1196 | { |
252c122d |
1197 | rmd160_ctx *r = p; |
1198 | switch (kd->e & KF_ENCMASK) { |
1199 | case KENC_BINARY: |
1200 | case KENC_ENCRYPT: |
1201 | rmd160_hash(r, kd->u.k.k, kd->u.k.sz); |
1202 | break; |
1203 | case KENC_MP: { |
1204 | size_t sz = mp_octets(kd->u.m); |
1205 | octet *q = sub_alloc(sz); |
1206 | mp_storeb(kd->u.m, q, sz); |
1207 | rmd160_hash(r, q, sz); |
1208 | memset(q, 0, sz); |
1209 | sub_free(q, sz); |
1210 | } break; |
1211 | } |
d03ab969 |
1212 | return (0); |
1213 | } |
1214 | |
252c122d |
1215 | static void fingerprint(key *k, const key_filter *kf) |
d03ab969 |
1216 | { |
252c122d |
1217 | rmd160_ctx r; |
1218 | octet hash[RMD160_HASHSZ]; |
1219 | dstr d = DSTR_INIT; |
1220 | int i; |
d03ab969 |
1221 | |
252c122d |
1222 | if (!key_match(&k->k, kf)) |
1223 | return; |
1224 | rmd160_init(&r); |
1225 | key_do(&k->k, kf, 0, fpkey, &r); |
1226 | rmd160_done(&r, hash); |
1227 | |
1228 | key_fulltag(k, &d); |
1229 | for (i = 0; i < sizeof(hash); i++) { |
1230 | if (i && i % 4 == 0) |
1231 | putchar('-'); |
1232 | printf("%02x", hash[i]); |
1233 | } |
1234 | printf(" %s\n", d.buf); |
1235 | dstr_destroy(&d); |
1236 | } |
d03ab969 |
1237 | |
252c122d |
1238 | static int cmd_finger(int argc, char *argv[]) |
1239 | { |
1240 | key_file f; |
1241 | int rc = 0; |
1242 | key_filter kf = { KF_NONSECRET, KF_NONSECRET }; |
d03ab969 |
1243 | |
1244 | for (;;) { |
1245 | static struct option opt[] = { |
252c122d |
1246 | { "filter", OPTF_ARGREQ, 0, 'f' }, |
1247 | { 0, 0, 0, 0 } |
d03ab969 |
1248 | }; |
252c122d |
1249 | int i = mdwopt(argc, argv, "f:", opt, 0, 0, 0); |
d03ab969 |
1250 | if (i < 0) |
1251 | break; |
d03ab969 |
1252 | switch (i) { |
252c122d |
1253 | case 'f': { |
1254 | char *p; |
1255 | int err = key_readflags(optarg, &p, &kf.f, &kf.m); |
1256 | if (err || *p) |
1257 | die(EXIT_FAILURE, "bad filter string `%s'", optarg); |
1258 | } break; |
d03ab969 |
1259 | default: |
252c122d |
1260 | rc = 1; |
d03ab969 |
1261 | break; |
1262 | } |
1263 | } |
1264 | |
252c122d |
1265 | argv += optind; argc -= optind; |
1266 | if (rc) |
1267 | die(EXIT_FAILURE, "Usage: fingerprint [-f filter] [tag...]"); |
d03ab969 |
1268 | |
1269 | doopen(&f, KOPEN_READ); |
d03ab969 |
1270 | |
252c122d |
1271 | if (argc) { |
1272 | int i; |
1273 | for (i = 0; i < argc; i++) { |
1274 | key *k = key_bytag(&f, argv[i]); |
1275 | if (k) |
1276 | fingerprint(k, &kf); |
1277 | else { |
1278 | rc = 1; |
1279 | moan("key `%s' not found", argv[i]); |
1280 | } |
1281 | } |
1282 | } else { |
1283 | key_iter i; |
1284 | key *k; |
1285 | for (key_mkiter(&i, &f); (k = key_next(&i)) != 0; ) |
1286 | fingerprint(k, &kf); |
1287 | } |
1288 | return (rc); |
1289 | } |
d03ab969 |
1290 | |
252c122d |
1291 | /* --- @cmd_comment@ --- */ |
d03ab969 |
1292 | |
252c122d |
1293 | static int cmd_comment(int argc, char *argv[]) |
1294 | { |
1295 | key_file f; |
1296 | key *k; |
1297 | int err; |
d03ab969 |
1298 | |
252c122d |
1299 | if (argc < 2 || argc > 3) |
1300 | die(EXIT_FAILURE, "Usage: comment tag [comment]"); |
1301 | doopen(&f, KOPEN_WRITE); |
1302 | if ((k = key_bytag(&f, argv[1])) == 0) |
1303 | die(EXIT_FAILURE, "key `%s' not found", argv[1]); |
1304 | if ((err = key_setcomment(&f, k, argv[2])) != 0) |
1305 | die(EXIT_FAILURE, "bad comment `%s': %s", argv[2], key_strerror(err)); |
1306 | doclose(&f); |
1307 | return (0); |
1308 | } |
d03ab969 |
1309 | |
252c122d |
1310 | /* --- @cmd_tag@ --- */ |
d03ab969 |
1311 | |
252c122d |
1312 | static int cmd_tag(int argc, char *argv[]) |
1313 | { |
1314 | key_file f; |
1315 | key *k; |
1316 | int err; |
d03ab969 |
1317 | |
252c122d |
1318 | if (argc < 2 || argc > 3) |
1319 | die(EXIT_FAILURE, "Usage: tag tag [new-tag]"); |
1320 | doopen(&f, KOPEN_WRITE); |
1321 | if ((k = key_bytag(&f, argv[1])) == 0) |
1322 | die(EXIT_FAILURE, "key `%s' not found", argv[1]); |
1323 | if ((err = key_settag(&f, k, argv[2])) != 0) |
1324 | die(EXIT_FAILURE, "bad tag `%s': %s", argv[2], key_strerror(err)); |
1325 | doclose(&f); |
1326 | return (0); |
1327 | } |
d03ab969 |
1328 | |
252c122d |
1329 | /* --- @cmd_lock@ --- */ |
d03ab969 |
1330 | |
252c122d |
1331 | static int cmd_lock(int argc, char *argv[]) |
1332 | { |
1333 | key_file f; |
1334 | key *k; |
1335 | key_data *kd; |
1336 | dstr d = DSTR_INIT; |
d03ab969 |
1337 | |
252c122d |
1338 | if (argc != 2) |
1339 | die(EXIT_FAILURE, "Usage: lock qtag"); |
1340 | doopen(&f, KOPEN_WRITE); |
1341 | if (key_qtag(&f, argv[1], &d, &k, &kd)) |
1342 | die(EXIT_FAILURE, "key `%s' not found", argv[1]); |
1343 | if (kd->e == KENC_ENCRYPT && key_punlock(d.buf, kd, kd)) |
1344 | die(EXIT_FAILURE, "couldn't unlock key `%s'", d.buf); |
1345 | if (key_plock(d.buf, kd, kd)) |
1346 | die(EXIT_FAILURE, "failed to lock key `%s'", d.buf); |
1347 | f.f |= KF_MODIFIED; |
1348 | doclose(&f); |
1349 | return (0); |
1350 | } |
d03ab969 |
1351 | |
252c122d |
1352 | /* --- @cmd_unlock@ --- */ |
d03ab969 |
1353 | |
252c122d |
1354 | static int cmd_unlock(int argc, char *argv[]) |
1355 | { |
1356 | key_file f; |
1357 | key *k; |
1358 | key_data *kd; |
1359 | dstr d = DSTR_INIT; |
d03ab969 |
1360 | |
252c122d |
1361 | if (argc != 2) |
1362 | die(EXIT_FAILURE, "Usage: unlock qtag"); |
1363 | doopen(&f, KOPEN_WRITE); |
1364 | if (key_qtag(&f, argv[1], &d, &k, &kd)) |
1365 | die(EXIT_FAILURE, "key `%s' not found", argv[1]); |
1366 | if (kd->e != KENC_ENCRYPT) |
1367 | die(EXIT_FAILURE, "key `%s' is not encrypted", d.buf); |
1368 | if (kd->e == KENC_ENCRYPT && key_punlock(d.buf, kd, kd)) |
1369 | die(EXIT_FAILURE, "couldn't unlock key `%s'", d.buf); |
1370 | f.f |= KF_MODIFIED; |
d03ab969 |
1371 | doclose(&f); |
1372 | return (0); |
1373 | } |
1374 | |
1375 | /* --- @cmd_extract@ --- */ |
1376 | |
1377 | static int cmd_extract(int argc, char *argv[]) |
1378 | { |
1379 | key_file f; |
1380 | key *k; |
d03ab969 |
1381 | int i; |
1382 | int rc = 0; |
252c122d |
1383 | key_filter kf = { 0, 0 }; |
d03ab969 |
1384 | FILE *fp; |
1385 | |
252c122d |
1386 | for (;;) { |
1387 | static struct option opt[] = { |
1388 | { "filter", OPTF_ARGREQ, 0, 'f' }, |
1389 | { 0, 0, 0, 0 } |
1390 | }; |
1391 | int i = mdwopt(argc, argv, "f:", opt, 0, 0, 0); |
1392 | if (i < 0) |
1393 | break; |
1394 | switch (i) { |
1395 | case 'f': { |
1396 | char *p; |
1397 | int err = key_readflags(optarg, &p, &kf.f, &kf.m); |
1398 | if (err || *p) |
1399 | die(EXIT_FAILURE, "bad filter string `%s'", optarg); |
1400 | } break; |
1401 | default: |
1402 | rc = 1; |
1403 | break; |
1404 | } |
1405 | } |
1406 | |
1407 | argv += optind; argc -= optind; |
1408 | if (rc || argc < 1) |
1409 | die(EXIT_FAILURE, "Usage: extract [-f filter] file [tag...]"); |
1410 | if (strcmp(*argv, "-") == 0) |
d03ab969 |
1411 | fp = stdout; |
252c122d |
1412 | else if (!(fp = fopen(*argv, "w"))) { |
d03ab969 |
1413 | die(EXIT_FAILURE, "couldn't open `%s' for writing: %s", |
252c122d |
1414 | *argv, strerror(errno)); |
d03ab969 |
1415 | } |
1416 | |
252c122d |
1417 | doopen(&f, KOPEN_READ); |
1418 | if (argc < 2) { |
1419 | key_iter i; |
1420 | key *k; |
1421 | for (key_mkiter(&i, &f); (k = key_next(&i)) != 0; ) |
1422 | key_extract(&f, k, fp, &kf); |
1423 | } else { |
1424 | for (i = 1; i < argc; i++) { |
1425 | if ((k = key_bytag(&f, argv[i])) != 0) |
1426 | key_extract(&f, k, fp, &kf); |
1427 | else { |
1428 | moan("key `%s' not found", argv[i]); |
1429 | rc = 1; |
1430 | } |
d03ab969 |
1431 | } |
1432 | } |
252c122d |
1433 | if (fclose(fp)) |
1434 | die(EXIT_FAILURE, "error writing file: %s", strerror(errno)); |
d03ab969 |
1435 | doclose(&f); |
1436 | return (rc); |
1437 | } |
1438 | |
1439 | /* --- @cmd_tidy@ --- */ |
1440 | |
1441 | static int cmd_tidy(int argc, char *argv[]) |
1442 | { |
1443 | key_file f; |
1444 | if (argc != 1) |
1445 | die(EXIT_FAILURE, "usage: tidy"); |
1446 | doopen(&f, KOPEN_WRITE); |
1447 | f.f |= KF_MODIFIED; /* Nasty hack */ |
1448 | doclose(&f); |
1449 | return (0); |
1450 | } |
1451 | |
1452 | /* --- @cmd_merge@ --- */ |
1453 | |
1454 | static int cmd_merge(int argc, char *argv[]) |
1455 | { |
1456 | key_file f; |
1457 | FILE *fp; |
1458 | |
1459 | if (argc != 2) |
252c122d |
1460 | die(EXIT_FAILURE, "Usage: merge file"); |
d03ab969 |
1461 | if (strcmp(argv[1], "-") == 0) |
1462 | fp = stdin; |
1463 | else if (!(fp = fopen(argv[1], "r"))) { |
1464 | die(EXIT_FAILURE, "couldn't open `%s' for writing: %s", |
1465 | argv[1], strerror(errno)); |
1466 | } |
1467 | |
1468 | doopen(&f, KOPEN_WRITE); |
252c122d |
1469 | key_merge(&f, argv[1], fp, key_moan, 0); |
d03ab969 |
1470 | doclose(&f); |
1471 | return (0); |
1472 | } |
1473 | |
1474 | /*----- Main command table ------------------------------------------------*/ |
1475 | |
1476 | static struct cmd { |
1477 | const char *name; |
1478 | int (*cmd)(int /*argc*/, char */*argv*/[]); |
1479 | const char *help; |
1480 | } cmds[] = { |
1481 | { "add", cmd_add, |
252c122d |
1482 | "add [options] type [attr...]\n\ |
1483 | Options: [-l] [-a alg] [-b bits] [-p param]\n\ |
1484 | [-e expire] [-t tag] [-c comment]" |
1485 | }, |
1486 | { "expire", cmd_expire, "expire tag..." }, |
1487 | { "delete", cmd_delete, "delete tag..." }, |
1488 | { "tag", cmd_tag, "tag tag [new-tag]" }, |
1489 | { "setattr", cmd_setattr, "setattr tag attr..." }, |
1490 | { "comment", cmd_comment, "comment tag [comment]" }, |
1491 | { "lock", cmd_lock, "lock qtag" }, |
1492 | { "unlock", cmd_unlock, "unlock qtag" }, |
1493 | { "list", cmd_list, "list [-uqv] [-f filter] [tag...]" }, |
1494 | { "fingerprint", cmd_finger, "fingerprint [-f filter] [tag...]" }, |
d03ab969 |
1495 | { "tidy", cmd_tidy, "tidy" }, |
252c122d |
1496 | { "extract", cmd_extract, "extract file qtag..." }, |
1497 | { "merge", cmd_merge, "merge file" }, |
d03ab969 |
1498 | { 0, 0, 0 } |
1499 | }; |
1500 | |
1501 | typedef struct cmd cmd; |
1502 | |
1503 | /*----- Main code ---------------------------------------------------------*/ |
1504 | |
1505 | /* --- Helpful GNUy functions --- */ |
1506 | |
1507 | void usage(FILE *fp) |
1508 | { |
1509 | fprintf(fp, "Usage: %s [-k file] command [args]\n", QUIS); |
1510 | } |
1511 | |
1512 | void version(FILE *fp) |
1513 | { |
1514 | fprintf(fp, "%s, Catacomb version " VERSION "\n", QUIS); |
1515 | } |
1516 | |
1517 | void help(FILE *fp) |
1518 | { |
1519 | cmd *c; |
1520 | version(fp); |
1521 | fputc('\n', fp); |
1522 | usage(fp); |
1523 | fputs("\n\ |
1524 | Performs various simple key management operations. Command line options\n\ |
1525 | recognized are:\n\ |
1526 | \n\ |
1527 | -h, --help Display this help text.\n\ |
1528 | -v, --version Display version number.\n\ |
1529 | -u, --usage Display short usage summary.\n\ |
1530 | \n\ |
1531 | -k, --keyring=FILE Read and write keys in FILE.\n\ |
1532 | \n\ |
1533 | The following commands are understood:\n\n", |
1534 | fp); |
1535 | for (c = cmds; c->name; c++) |
1536 | fprintf(fp, "%s\n", c->help); |
1537 | } |
1538 | |
1539 | /* --- @main@ --- * |
1540 | * |
1541 | * Arguments: @int argc@ = number of command line arguments |
1542 | * @char *argv[]@ = array of command line arguments |
1543 | * |
1544 | * Returns: Nonzero on failure. |
1545 | * |
1546 | * Use: Main program. Performs simple key management functions. |
1547 | */ |
1548 | |
1549 | int main(int argc, char *argv[]) |
1550 | { |
1551 | unsigned f = 0; |
1552 | |
1553 | enum { |
1554 | f_bogus = 1 |
1555 | }; |
1556 | |
1557 | /* --- Initialization --- */ |
1558 | |
1559 | ego(argv[0]); |
1560 | sub_init(); |
1561 | |
252c122d |
1562 | /* --- Initialize the Catacomb random number generator --- */ |
1563 | |
1564 | rand_init(RAND_GLOBAL); |
1565 | rand_noisesrc(RAND_GLOBAL, &noise_source); |
1566 | |
d03ab969 |
1567 | /* --- Parse command line options --- */ |
1568 | |
1569 | for (;;) { |
1570 | static struct option opt[] = { |
1571 | |
1572 | /* --- Standard GNUy help options --- */ |
1573 | |
1574 | { "help", 0, 0, 'h' }, |
1575 | { "version", 0, 0, 'v' }, |
1576 | { "usage", 0, 0, 'u' }, |
1577 | |
1578 | /* --- Real live useful options --- */ |
1579 | |
1580 | { "keyring", OPTF_ARGREQ, 0, 'k' }, |
1581 | |
1582 | /* --- Magic terminator --- */ |
1583 | |
1584 | { 0, 0, 0, 0 } |
1585 | }; |
1586 | int i = mdwopt(argc, argv, "+hvu k:", opt, 0, 0, 0); |
1587 | |
1588 | if (i < 0) |
1589 | break; |
1590 | switch (i) { |
1591 | |
1592 | /* --- GNU help options --- */ |
1593 | case 'h': |
1594 | help(stdout); |
1595 | exit(0); |
1596 | case 'v': |
1597 | version(stdout); |
1598 | exit(0); |
1599 | case 'u': |
1600 | usage(stdout); |
1601 | exit(0); |
1602 | |
1603 | /* --- Real useful options --- */ |
1604 | |
1605 | case 'k': |
1606 | keyfile = optarg; |
1607 | break; |
1608 | |
1609 | /* --- Bogosity --- */ |
1610 | |
1611 | default: |
1612 | f |= f_bogus; |
1613 | break; |
1614 | } |
1615 | } |
1616 | |
1617 | /* --- Complain about excessive bogons --- */ |
1618 | |
1619 | if (f & f_bogus || optind == argc) { |
1620 | usage(stderr); |
1621 | exit(1); |
1622 | } |
1623 | |
1624 | /* --- Dispatch to appropriate command handler --- */ |
1625 | |
1626 | argc -= optind; |
1627 | argv += optind; |
1628 | optind = 0; |
1629 | |
1630 | { |
1631 | cmd *c, *chosen = 0; |
1632 | size_t sz = strlen(argv[0]); |
1633 | |
1634 | for (c = cmds; c->name; c++) { |
1635 | if (strncmp(argv[0], c->name, sz) == 0) { |
1636 | if (c->name[sz] == 0) { |
1637 | chosen = c; |
1638 | break; |
1639 | } else if (chosen) |
1640 | die(EXIT_FAILURE, "ambiguous command name `%s'", argv[0]); |
1641 | else |
1642 | chosen = c; |
1643 | } |
1644 | } |
1645 | if (!chosen) |
1646 | die(EXIT_FAILURE, "unknown command name `%s'", argv[0]); |
1647 | return (chosen->cmd(argc, argv)); |
1648 | } |
1649 | } |
1650 | |
1651 | /*----- That's all, folks -------------------------------------------------*/ |