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Support Lim-Lee primes in Diffie-Hellman parameter generation.
[u/mdw/catacomb] / keyutil.c
1 /* -*-c-*-
2 *
3 * $Id: keyutil.c,v 1.8 2000/07/29 09:59:13 mdw Exp $
4 *
5 * Simple key manager program
6 *
7 * (c) 1999 Straylight/Edgeware
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 $
33 * Revision 1.8 2000/07/29 09:59:13 mdw
34 * Support Lim-Lee primes in Diffie-Hellman parameter generation.
35 *
36 * Revision 1.7 2000/07/01 11:18:51 mdw
37 * Use new interfaces for key manipulation.
38 *
39 * Revision 1.6 2000/06/17 11:28:22 mdw
40 * Use secure memory interface from MP library. `rand_getgood' is
41 * deprecated.
42 *
43 * Revision 1.5 2000/02/12 18:21:03 mdw
44 * Overhaul of key management (again).
45 *
46 * Revision 1.4 1999/12/22 15:48:10 mdw
47 * Track new key-management changes. Support new key generation
48 * algorithms.
49 *
50 * Revision 1.3 1999/11/02 15:23:24 mdw
51 * Fix newlines in keyring list.
52 *
53 * Revision 1.2 1999/10/15 21:05:28 mdw
54 * In `key list', show timezone for local times, and support `-u' option
55 * for UTC output.
56 *
57 * Revision 1.1 1999/09/03 08:41:12 mdw
58 * Initial import.
59 *
60 */
61
62 /*----- Header files ------------------------------------------------------*/
63
64 #include "config.h"
65
66 #include <errno.h>
67 #include <stdio.h>
68 #include <stdlib.h>
69 #include <string.h>
70 #include <time.h>
71
72 #include <mLib/base64.h>
73 #include <mLib/mdwopt.h>
74 #include <mLib/quis.h>
75 #include <mLib/report.h>
76 #include <mLib/sub.h>
77
78 #include <noise.h>
79 #include <rand.h>
80
81 #include "bbs.h"
82 #include "dh.h"
83 #include "dsa.h"
84 #include "fibrand.h"
85 #include "getdate.h"
86 #include "key.h"
87 #include "mp.h"
88 #include "mpmont.h"
89 #include "mprand.h"
90 #include "mptext.h"
91 #include "pgen.h"
92 #include "rsa.h"
93
94 /*----- Handy global state ------------------------------------------------*/
95
96 static const char *keyfile = "keyring";
97
98 /*----- Useful shared functions -------------------------------------------*/
99
100 /* --- @doopen@ --- *
101 *
102 * Arguments: @key_file *f@ = pointer to key file block
103 * @unsigned how@ = method to open file with
104 *
105 * Returns: ---
106 *
107 * Use: Opens a key file and handles errors by panicking
108 * appropriately.
109 */
110
111 static void doopen(key_file *f, unsigned how)
112 {
113 if (key_open(f, keyfile, how, key_moan, 0))
114 die(1, "couldn't open keyring `%s': %s", keyfile, strerror(errno));
115 }
116
117 /* --- @doclose@ --- *
118 *
119 * Arguments: @key_file *f@ = pointer to key file block
120 *
121 * Returns: ---
122 *
123 * Use: Closes a key file and handles errors by panicking
124 * appropriately.
125 */
126
127 static void doclose(key_file *f)
128 {
129 switch (key_close(f)) {
130 case KWRITE_FAIL:
131 die(EXIT_FAILURE, "couldn't write file `%s': %s",
132 keyfile, strerror(errno));
133 case KWRITE_BROKEN:
134 die(EXIT_FAILURE, "keyring file `%s' broken: %s (repair manually)",
135 keyfile, strerror(errno));
136 }
137 }
138
139 /* --- @setattr@ --- *
140 *
141 * Arguments: @key_file *f@ = pointer to key file block
142 * @key *k@ = pointer to key block
143 * @char *v[]@ = array of assignments (overwritten!)
144 *
145 * Returns: ---
146 *
147 * Use: Applies the attribute assignments to the key.
148 */
149
150 static void setattr(key_file *f, key *k, char *v[])
151 {
152 while (*v) {
153 int err;
154 char *p = *v;
155 size_t eq = strcspn(p, "=");
156 if (p[eq] == 0)
157 moan("invalid assignment: `%s'", p);
158 p[eq] = 0;
159 p += eq + 1;
160 if ((err = key_putattr(f, k, *v, *p ? p : 0)) != 0)
161 die(EXIT_FAILURE, "couldn't set attributes: %s", key_strerror(err));
162 v++;
163 }
164 }
165
166 /*----- Key generation ----------------------------------------------------*/
167
168 /* --- Key generation parameters --- */
169
170 typedef struct keyopts {
171 key_file *kf; /* Pointer to key file */
172 key *k; /* Pointer to the actual key */
173 dstr tag; /* Full tag name for the key */
174 unsigned f; /* Flags for the new key */
175 unsigned bits, qbits; /* Bit length for the new key */
176 key *p; /* Parameters key-data */
177 } keyopts;
178
179 enum {
180 f_bogus = 1, /* Error in parsing */
181 f_lock = 2, /* Passphrase-lock private key */
182 f_quiet = 4, /* Don't show a progress indicator */
183 f_limlee = 8, /* Generate Lim-Lee primes */
184 f_subgroup = 16 /* Generate a subgroup */
185 };
186
187 /* --- @dolock@ --- *
188 *
189 * Arguments: @keyopts *k@ = key generation options
190 * @key_data *kd@ = pointer to key data to lock
191 * @const char *t@ = tag suffix or null
192 *
193 * Returns: ---
194 *
195 * Use: Does passphrase locking on new keys.
196 */
197
198 static void dolock(keyopts *k, key_data *kd, const char *t)
199 {
200 if (!(k->f & f_lock))
201 return;
202 if (t)
203 dstr_putf(&k->tag, ".%s", t);
204 if (key_plock(k->tag.buf, kd, kd))
205 die(EXIT_FAILURE, "couldn't lock key");
206 }
207
208 /* --- @mpkey@ --- *
209 *
210 * Arguments: @key_data *kd@ = pointer to parent key block
211 * @const char *tag@ = pointer to tag string
212 * @mp *m@ = integer to store
213 * @unsigned f@ = flags to set
214 *
215 * Returns: ---
216 *
217 * Use: Sets a multiprecision integer subkey.
218 */
219
220 static void mpkey(key_data *kd, const char *tag, mp *m, unsigned f)
221 {
222 key_data *kkd = key_structcreate(kd, tag);
223 key_mp(kkd, m);
224 kkd->e |= f;
225 }
226
227 /* --- @copyparam@ --- *
228 *
229 * Arguments: @keyopts *k@ = pointer to key options
230 * @const char **pp@ = checklist of parameters
231 *
232 * Returns: Nonzero if parameters copied; zero if you have to generate
233 * them.
234 *
235 * Use: Copies parameters from a source key to the current one.
236 */
237
238 static int copyparam(keyopts *k, const char **pp)
239 {
240 key_filter kf;
241
242 /* --- Quick check if no parameters supplied --- */
243
244 if (!k->p)
245 return (0);
246
247 /* --- Run through the checklist --- */
248
249 while (*pp) {
250 key_data *kd = key_structfind(&k->p->k, *pp);
251 if (!kd)
252 die(EXIT_FAILURE, "bad parameter key: parameter `%s' not found", *pp);
253 if ((kd->e & KF_CATMASK) != KCAT_SHARE)
254 die(EXIT_FAILURE, "bad parameter key: subkey `%s' is not shared", *pp);
255 pp++;
256 }
257
258 /* --- Copy over the parameters --- */
259
260 kf.f = KCAT_SHARE;
261 kf.m = KF_CATMASK;
262 if (!key_copy(&k->k->k, &k->p->k, &kf))
263 die(EXIT_FAILURE, "unexpected failure while copying parameters");
264 return (1);
265 }
266
267 /* --- @getmp@ --- *
268 *
269 * Arguments: @key_data *k@ = pointer to key data block
270 * @const char *tag@ = tag string to use
271 *
272 * Returns: Pointer to multiprecision integer key item.
273 *
274 * Use: Fetches an MP key component.
275 */
276
277 static mp *getmp(key_data *k, const char *tag)
278 {
279 k = key_structfind(k, tag);
280 if (!k)
281 die(EXIT_FAILURE, "unexpected failure looking up subkey `%s'", tag);
282 if ((k->e & KF_ENCMASK) != KENC_MP)
283 die(EXIT_FAILURE, "subkey `%s' has an incompatible type");
284 return (k->u.m);
285 }
286
287 /* --- @keyrand@ --- *
288 *
289 * Arguments: @key_file *kf@ = pointer to key file
290 * @const char *id@ = pointer to key id (or null)
291 *
292 * Returns: ---
293 *
294 * Use: Keys the random number generator.
295 */
296
297 static void keyrand(key_file *kf, const char *id)
298 {
299 key *k;
300
301 /* --- Find the key --- */
302
303 if (id) {
304 if ((k = key_bytag(kf, id)) == 0)
305 die(EXIT_FAILURE, "key `%s' not found", id);
306 } else
307 k = key_bytype(kf, "catacomb-rand");
308
309 if (k) {
310 key_data *kd = &k->k, kkd;
311
312 again:
313 switch (kd->e & KF_ENCMASK) {
314 case KENC_BINARY:
315 break;
316 case KENC_ENCRYPT: {
317 dstr d = DSTR_INIT;
318 key_fulltag(k, &d);
319 if (key_punlock(d.buf, kd, &kkd))
320 die(EXIT_FAILURE, "error unlocking key `%s'", d.buf);
321 dstr_destroy(&d);
322 kd = &kkd;
323 } goto again;
324 default: {
325 dstr d = DSTR_INIT;
326 key_fulltag(k, &d);
327 die(EXIT_FAILURE, "bad encoding type for key `%s'", d.buf);
328 } break;
329 }
330
331 /* --- Key the generator --- */
332
333 rand_key(RAND_GLOBAL, kd->u.k.k, kd->u.k.sz);
334 if (kd == &kkd)
335 key_destroy(&kkd);
336 }
337 }
338
339 /* --- Key generation algorithms --- */
340
341 static void alg_binary(keyopts *k)
342 {
343 unsigned sz;
344 unsigned m;
345 octet *p;
346
347 if (!k->bits)
348 k->bits = 128;
349 if (k->p)
350 die(EXIT_FAILURE, "no shared parameters for binary keys");
351
352 sz = (k->bits + 7) >> 3;
353 p = sub_alloc(sz);
354 m = (1 << (((k->bits - 1) & 7) + 1)) - 1;
355 rand_get(RAND_GLOBAL, p, sz);
356 *p &= m;
357 key_binary(&k->k->k, p, sz);
358 k->k->k.e |= KCAT_SYMM | KF_BURN;
359 memset(p, 0, sz);
360 sub_free(p, sz);
361 dolock(k, &k->k->k, 0);
362 }
363
364 static void alg_des(keyopts *k)
365 {
366 unsigned sz;
367 octet *p;
368 int i;
369
370 if (!k->bits)
371 k->bits = 112;
372 if (k->p)
373 die(EXIT_FAILURE, "no shared parameters for DES keys");
374 if (k->bits % 56 || k->bits > 168)
375 die(EXIT_FAILURE, "DES keys must be 56, 112 or 168 bits long");
376
377 sz = k->bits / 7;
378 p = sub_alloc(sz);
379 rand_get(RAND_GLOBAL, p, sz); /* Too much work done here! */
380 for (i = 0; i < sz; i++) {
381 octet x = p[i] | 0x01;
382 x = x ^ (x >> 4);
383 x = x ^ (x >> 2);
384 x = x ^ (x >> 1);
385 p[i] = (p[i] & 0xfe) | (x & 0x01);
386 }
387 key_binary(&k->k->k, p, sz);
388 k->k->k.e |= KCAT_SYMM | KF_BURN;
389 memset(p, 0, sz);
390 sub_free(p, sz);
391 dolock(k, &k->k->k, 0);
392 }
393
394 static void alg_rsa(keyopts *k)
395 {
396 rsa_priv rp;
397 key_data *kd;
398
399 /* --- Sanity checking --- */
400
401 if (k->p)
402 die(EXIT_FAILURE, "no shared parameters for RSA keys");
403 if (!k->bits)
404 k->bits = 1024;
405
406 /* --- Generate the RSA parameters --- */
407
408 if (rsa_gen(&rp, k->bits, &rand_global, 0,
409 (k->f & f_quiet) ? 0 : pgen_ev, 0))
410 die(EXIT_FAILURE, "RSA key generation failed");
411
412 /* --- Run a test encryption --- */
413
414 {
415 grand *g = fibrand_create(rand_global.ops->word(&rand_global));
416 rsa_pub rpp;
417 mp *m = mprand_range(MP_NEW, rp.n, g, 0);
418 mp *c;
419
420 rpp.n = rp.n;
421 rpp.e = rp.e;
422 c = rsa_qpubop(&rpp, MP_NEW, m);
423 c = rsa_qprivop(&rp, c, c, g);
424
425 if (MP_CMP(c, !=, m))
426 die(EXIT_FAILURE, "test encryption failed");
427 mp_drop(c);
428 mp_drop(m);
429 g->ops->destroy(g);
430 }
431
432 /* --- Allrighty then --- */
433
434 kd = &k->k->k;
435 key_structure(kd);
436 mpkey(kd, "n", rp.n, KCAT_PUB);
437 mpkey(kd, "e", rp.e, KCAT_PUB);
438
439 kd = key_structcreate(kd, "private");
440 key_structure(kd);
441 mpkey(kd, "d", rp.d, KCAT_PRIV | KF_BURN);
442 mpkey(kd, "p", rp.p, KCAT_PRIV | KF_BURN);
443 mpkey(kd, "q", rp.q, KCAT_PRIV | KF_BURN);
444 mpkey(kd, "q-inv", rp.q_inv, KCAT_PRIV | KF_BURN);
445 mpkey(kd, "d-mod-p", rp.dp, KCAT_PRIV | KF_BURN);
446 mpkey(kd, "d-mod-q", rp.dq, KCAT_PRIV | KF_BURN);
447 dolock(k, kd, "private");
448
449 rsa_privfree(&rp);
450 }
451
452 static void alg_dsaparam(keyopts *k)
453 {
454 static const char *pl[] = { "q", "p", "g", 0 };
455 if (!copyparam(k, pl)) {
456 dsa_param dp;
457 octet *p;
458 size_t sz;
459 dstr d = DSTR_INIT;
460 base64_ctx c;
461 key_data *kd = &k->k->k;
462
463 /* --- Choose appropriate bit lengths if necessary --- */
464
465 if (!k->qbits)
466 k->qbits = 160;
467 if (!k->bits)
468 k->bits = 768;
469
470 /* --- Allocate a seed block --- */
471
472 sz = (k->qbits + 7) >> 3;
473 p = sub_alloc(sz);
474 rand_get(RAND_GLOBAL, p, sz);
475
476 /* --- Allocate the parameters --- */
477
478 if (dsa_gen(&dp, k->qbits, k->bits, 0, p, sz,
479 (k->f & f_quiet) ? 0 : pgen_ev, 0))
480 die(EXIT_FAILURE, "DSA parameter generation failed");
481
482 /* --- Store the parameters --- */
483
484 key_structure(kd);
485 mpkey(kd, "q", dp.q, KCAT_SHARE);
486 mpkey(kd, "p", dp.p, KCAT_SHARE);
487 mpkey(kd, "g", dp.g, KCAT_SHARE);
488 mp_drop(dp.q);
489 mp_drop(dp.p);
490 mp_drop(dp.g);
491
492 /* --- Store the seed for future verification --- */
493
494 base64_init(&c);
495 c.maxline = 0;
496 c.indent = "";
497 base64_encode(&c, p, sz, &d);
498 base64_encode(&c, 0, 0, &d);
499 key_putattr(k->kf, k->k, "seed", d.buf);
500 sub_free(p, sz);
501 dstr_destroy(&d);
502 }
503 }
504
505 static void alg_dsa(keyopts *k)
506 {
507 mp *q, *p, *g;
508 mp *x, *y;
509 mpmont mm;
510 key_data *kd = &k->k->k;
511
512 /* --- Get the shared parameters --- */
513
514 alg_dsaparam(k);
515 q = getmp(kd, "q");
516 p = getmp(kd, "p");
517 g = getmp(kd, "g");
518
519 /* --- Choose a private key --- */
520
521 x = mprand_range(MP_NEWSEC, q, &rand_global, 0);
522 mpmont_create(&mm, p);
523 y = mpmont_exp(&mm, MP_NEW, g, x);
524
525 /* --- Store everything away --- */
526
527 mpkey(kd, "y", y, KCAT_PUB);
528
529 kd = key_structcreate(kd, "private");
530 key_structure(kd);
531 mpkey(kd, "x", x, KCAT_PRIV | KF_BURN);
532 dolock(k, kd, "private");
533
534 mp_drop(x); mp_drop(y);
535 }
536
537 static void alg_dhparam(keyopts *k)
538 {
539 static const char *pl[] = { "p", "q", "g", 0 };
540 if (!copyparam(k, pl)) {
541 dh_param dp;
542 key_data *kd = &k->k->k;
543 int rc;
544
545 if (!k->bits)
546 k->bits = 1024;
547
548 /* --- Choose a large safe prime number --- */
549
550 if (k->f & f_limlee) {
551 mp **f;
552 size_t nf;
553 if (!k->qbits)
554 k->qbits = 256;
555 rc = dh_limlee(&dp, k->qbits, k->bits,
556 (k->f & f_subgroup) ? DH_SUBGROUP : 0,
557 0, &rand_global, (k->f & f_quiet) ? 0 : pgen_ev, 0,
558 (k->f & f_quiet) ? 0 : pgen_evspin, 0, &nf, &f);
559 if (!rc) {
560 dstr d = DSTR_INIT;
561 size_t i;
562 for (i = 0; i < nf; i++) {
563 if (i)
564 dstr_puts(&d, ", ");
565 mp_writedstr(f[i], &d, 10);
566 mp_drop(f[i]);
567 }
568 key_putattr(k->kf, k->k, "factors", d.buf);
569 dstr_destroy(&d);
570 }
571 } else
572 rc = dh_gen(&dp, k->qbits, k->bits, 0, &rand_global,
573 (k->f & f_quiet) ? 0 : pgen_ev, 0);
574
575 if (rc)
576 die(EXIT_FAILURE, "Diffie-Hellman parameter generation failed");
577
578 key_structure(kd);
579 mpkey(kd, "p", dp.p, KCAT_SHARE);
580 mpkey(kd, "q", dp.q, KCAT_SHARE);
581 mpkey(kd, "g", dp.g, KCAT_SHARE);
582 mp_drop(dp.q);
583 mp_drop(dp.p);
584 mp_drop(dp.g);
585 }
586 }
587
588 static void alg_dh(keyopts *k)
589 {
590 mp *x, *y;
591 mp *p, *q, *g;
592 mpmont mm;
593 key_data *kd = &k->k->k;
594
595 /* --- Get the shared parameters --- */
596
597 alg_dhparam(k);
598 p = getmp(kd, "p");
599 q = getmp(kd, "q");
600 g = getmp(kd, "g");
601
602 /* --- Choose a suitable private key --- *
603 *
604 * Since %$g$% has order %$q$%, choose %$x < q$%.
605 */
606
607 x = mprand_range(MP_NEWSEC, q, &rand_global, 0);
608
609 /* --- Compute the public key %$y = g^x \bmod p$% --- */
610
611 mpmont_create(&mm, p);
612 y = mpmont_exp(&mm, MP_NEW, g, x);
613 mpmont_destroy(&mm);
614
615 /* --- Store everything away --- */
616
617 mpkey(kd, "y", y, KCAT_PUB);
618
619 kd = key_structcreate(kd, "private");
620 key_structure(kd);
621 mpkey(kd, "x", x, KCAT_PRIV | KF_BURN);
622 dolock(k, kd, "private");
623
624 mp_drop(x); mp_drop(y);
625 }
626
627 static void alg_bbs(keyopts *k)
628 {
629 bbs_priv bp;
630 key_data *kd;
631
632 /* --- Sanity checking --- */
633
634 if (k->p)
635 die(EXIT_FAILURE, "no shared parameters for Blum-Blum-Shub keys");
636 if (!k->bits)
637 k->bits = 1024;
638
639 /* --- Generate the BBS parameters --- */
640
641 if (bbs_gen(&bp, k->bits, &rand_global, 0,
642 (k->f & f_quiet) ? 0 : pgen_ev, 0))
643 die(EXIT_FAILURE, "Blum-Blum-Shub key generation failed");
644
645 /* --- Allrighty then --- */
646
647 kd = &k->k->k;
648 key_structure(kd);
649 mpkey(kd, "n", bp.n, KCAT_PUB);
650
651 kd = key_structcreate(kd, "private");
652 key_structure(kd);
653 mpkey(kd, "p", bp.p, KCAT_PRIV | KF_BURN);
654 mpkey(kd, "q", bp.q, KCAT_PRIV | KF_BURN);
655 dolock(k, kd, "private");
656
657 bbs_privfree(&bp);
658 }
659
660 /* --- The algorithm tables --- */
661
662 typedef struct keyalg {
663 const char *name;
664 void (*proc)(keyopts *o);
665 const char *help;
666 } keyalg;
667
668 static keyalg algtab[] = {
669 { "binary", alg_binary, "Plain binary data" },
670 { "des", alg_des, "Binary with DES-style parity" },
671 { "rsa", alg_rsa, "RSA public-key encryption" },
672 { "dsa", alg_dsa, "DSA digital signatures" },
673 { "dsa-param", alg_dsaparam, "DSA shared parameters" },
674 { "dh", alg_dh, "Diffie-Hellman key exchange" },
675 { "dh-param", alg_dhparam, "Diffie-Hellman parameters" },
676 { "bbs", alg_bbs, "Blum-Blum-Shub generator" },
677 { 0, 0 }
678 };
679
680 /* --- @cmd_add@ --- */
681
682 static int cmd_add(int argc, char *argv[])
683 {
684 key_file f;
685 time_t exp = KEXP_EXPIRE;
686 const char *tag = 0, *ptag = 0;
687 const char *c = 0;
688 keyalg *alg = algtab;
689 const char *rtag = 0;
690 keyopts k = { 0, 0, DSTR_INIT, 0, 0, 0, 0 };
691
692 /* --- Parse options for the subcommand --- */
693
694 for (;;) {
695 static struct option opt[] = {
696 { "algorithm", OPTF_ARGREQ, 0, 'a' },
697 { "bits", OPTF_ARGREQ, 0, 'b' },
698 { "qbits", OPTF_ARGREQ, 0, 'B' },
699 { "parameters", OPTF_ARGREQ, 0, 'p' },
700 { "expire", OPTF_ARGREQ, 0, 'e' },
701 { "comment", OPTF_ARGREQ, 0, 'c' },
702 { "tag", OPTF_ARGREQ, 0, 't' },
703 { "rand-id", OPTF_ARGREQ, 0, 'r' },
704 { "lock", 0, 0, 'l' },
705 { "quiet", 0, 0, 'q' },
706 { "lim-lee", 0, 0, 'L' },
707 { "subgroup", 0, 0, 'S' },
708 { 0, 0, 0, 0 }
709 };
710 int i = mdwopt(argc, argv, "+a:b:B:p:e:c:t:r:lqLS", opt, 0, 0, 0);
711 if (i < 0)
712 break;
713
714 /* --- Handle the various options --- */
715
716 switch (i) {
717
718 /* --- Read an algorithm name --- */
719
720 case 'a': {
721 keyalg *a;
722 size_t sz = strlen(optarg);
723
724 if (strcmp(optarg, "list") == 0) {
725 for (a = algtab; a->name; a++)
726 printf("%-10s %s\n", a->name, a->help);
727 return (0);
728 }
729
730 alg = 0;
731 for (a = algtab; a->name; a++) {
732 if (strncmp(optarg, a->name, sz) == 0) {
733 if (a->name[sz] == 0) {
734 alg = a;
735 break;
736 } else if (alg)
737 die(EXIT_FAILURE, "ambiguous algorithm name `%s'", optarg);
738 else
739 alg = a;
740 }
741 }
742 if (!alg)
743 die(EXIT_FAILURE, "unknown algorithm name `%s'", optarg);
744 } break;
745
746 /* --- Bits must be nonzero and a multiple of 8 --- */
747
748 case 'b': {
749 char *p;
750 k.bits = strtoul(optarg, &p, 0);
751 if (k.bits == 0 || *p != 0)
752 die(EXIT_FAILURE, "bad bitlength `%s'", optarg);
753 } break;
754
755 case 'B': {
756 char *p;
757 k.qbits = strtoul(optarg, &p, 0);
758 if (k.qbits == 0 || *p != 0)
759 die(EXIT_FAILURE, "bad bitlength `%s'", optarg);
760 } break;
761
762 /* --- Parameter selection --- */
763
764 case 'p':
765 ptag = optarg;
766 break;
767
768 /* --- Expiry dates get passed to @get_date@ for parsing --- */
769
770 case 'e':
771 if (strncmp(optarg, "forever", strlen(optarg)) == 0)
772 exp = KEXP_FOREVER;
773 else {
774 exp = get_date(optarg, 0);
775 if (exp == -1)
776 die(EXIT_FAILURE, "bad expiry date `%s'", optarg);
777 }
778 break;
779
780 /* --- Store comments without interpretation --- */
781
782 case 'c':
783 if (key_chkcomment(optarg))
784 die(EXIT_FAILURE, "bad comment string `%s'", optarg);
785 c = optarg;
786 break;
787
788 /* --- Store tags --- */
789
790 case 't':
791 if (key_chkident(optarg))
792 die(EXIT_FAILURE, "bad tag string `%s'", optarg);
793 tag = optarg;
794 break;
795
796 /* --- Other flags --- */
797
798 case 'r':
799 rtag = optarg;
800 break;
801 case 'l':
802 k.f |= f_lock;
803 break;
804 case 'q':
805 k.f |= f_quiet;
806 break;
807 case 'L':
808 k.f |= f_limlee;
809 break;
810 case 'S':
811 k.f |= f_subgroup;
812 break;
813
814 /* --- Other things are bogus --- */
815
816 default:
817 k.f |= f_bogus;
818 break;
819 }
820 }
821
822 /* --- Various sorts of bogosity --- */
823
824 if ((k.f & f_bogus) || optind + 1 > argc) {
825 die(EXIT_FAILURE,
826 "Usage: add [options] type [attr...]");
827 }
828 if (key_chkident(argv[optind]))
829 die(EXIT_FAILURE, "bad key type `%s'", argv[optind]);
830
831 /* --- Set up various bits of the state --- */
832
833 if (exp == KEXP_EXPIRE)
834 exp = time(0) + 14 * 24 * 60 * 60;
835
836 /* --- Open the file and create the basic key block --- *
837 *
838 * Keep on generating keyids until one of them doesn't collide.
839 */
840
841 doopen(&f, KOPEN_WRITE);
842 k.kf = &f;
843
844 /* --- Key the generator --- */
845
846 keyrand(&f, rtag);
847
848 for (;;) {
849 uint32 id = rand_global.ops->word(&rand_global);
850 int err;
851 k.k = key_new(&f, id, argv[optind], exp, &err);
852 if (k.k)
853 break;
854 if (err != KERR_DUPID)
855 die(EXIT_FAILURE, "error adding new key: %s", key_strerror(err));
856 }
857
858 /* --- Set various simple attributes --- */
859
860 if (tag) {
861 int err = key_settag(&f, k.k, tag);
862 if (err)
863 die(EXIT_FAILURE, "error setting key tag: %s", key_strerror(err));
864 }
865
866 if (c) {
867 int err = key_setcomment(&f, k.k, c);
868 if (err)
869 die(EXIT_FAILURE, "error setting key comment: %s", key_strerror(err));
870 }
871
872 setattr(&f, k.k, argv + optind + 1);
873
874 key_fulltag(k.k, &k.tag);
875
876 /* --- Find the parameter key --- */
877
878 if (ptag) {
879 if ((k.p = key_bytag(&f, ptag)) == 0)
880 die(EXIT_FAILURE, "parameter key `%s' not found", ptag);
881 if ((k.p->k.e & KF_ENCMASK) != KENC_STRUCT)
882 die(EXIT_FAILURE, "parameter key `%s' is not structured", ptag);
883 }
884
885 /* --- Now generate the actual key data --- */
886
887 alg->proc(&k);
888
889 /* --- Done --- */
890
891 doclose(&f);
892 return (0);
893 }
894
895 /*----- Key listing -------------------------------------------------------*/
896
897 /* --- Listing options --- */
898
899 typedef struct listopts {
900 const char *tfmt; /* Date format (@strftime@-style) */
901 int v; /* Verbosity level */
902 unsigned f; /* Various flags */
903 time_t t; /* Time now (for key expiry) */
904 key_filter kf; /* Filter for matching keys */
905 } listopts;
906
907 /* --- Listing flags --- */
908
909 enum {
910 f_newline = 2, /* Write newline before next entry */
911 f_attr = 4, /* Written at least one attribute */
912 f_utc = 8 /* Emit UTC time, not local time */
913 };
914
915 /* --- @showkeydata@ --- *
916 *
917 * Arguments: @key_data *k@ = pointer to key to write
918 * @int ind@ = indentation level
919 * @listopts *o@ = listing options
920 * @dstr *d@ = tag string for this subkey
921 *
922 * Returns: ---
923 *
924 * Use: Emits a piece of key data in a human-readable format.
925 */
926
927 static void showkeydata(key_data *k, int ind, listopts *o, dstr *d)
928 {
929 #define INDENT(i) do { \
930 int _i; \
931 for (_i = 0; _i < (i); _i++) { \
932 putchar(' '); \
933 } \
934 } while (0)
935
936 switch (k->e & KF_ENCMASK) {
937
938 /* --- Binary key data --- *
939 *
940 * Emit as a simple hex dump.
941 */
942
943 case KENC_BINARY: {
944 const octet *p = k->u.k.k;
945 const octet *l = p + k->u.k.sz;
946 size_t sz = 0;
947
948 fputs(" {", stdout);
949 while (p < l) {
950 if (sz % 16 == 0) {
951 putchar('\n');
952 INDENT(ind + 2);
953 } else if (sz % 8 == 0)
954 fputs(" ", stdout);
955 else
956 putc(' ', stdout);
957 printf("%02x", *p++);
958 sz++;
959 }
960 putchar('\n');
961 INDENT(ind);
962 fputs("}\n", stdout);
963 } break;
964
965 /* --- Encrypted data --- *
966 *
967 * If the user is sufficiently keen, ask for a passphrase and decrypt the
968 * key. Otherwise just say that it's encrypted and move on.
969 */
970
971 case KENC_ENCRYPT:
972 if (o->v <= 3)
973 fputs(" encrypted\n", stdout);
974 else {
975 key_data kd;
976 if (key_punlock(d->buf, k, &kd))
977 printf(" <failed to unlock %s>\n", d->buf);
978 else {
979 fputs(" encrypted", stdout);
980 showkeydata(&kd, ind, o, d);
981 key_destroy(&kd);
982 }
983 }
984 break;
985
986 /* --- Integer keys --- *
987 *
988 * Emit as a large integer in decimal. This makes using the key in
989 * `calc' or whatever easier.
990 */
991
992 case KENC_MP:
993 putchar(' ');
994 mp_writefile(k->u.m, stdout, 10);
995 putchar('\n');
996 break;
997
998 /* --- Structured keys --- *
999 *
1000 * Just iterate over the subkeys.
1001 */
1002
1003 case KENC_STRUCT: {
1004 sym_iter i;
1005 key_struct *ks;
1006 size_t n = d->len;
1007
1008 fputs(" {\n", stdout);
1009 for (sym_mkiter(&i, &k->u.s); (ks = sym_next(&i)) != 0; ) {
1010 if (!key_match(&ks->k, &o->kf))
1011 continue;
1012 INDENT(ind + 2);
1013 printf("%s =", SYM_NAME(ks));
1014 d->len = n;
1015 dstr_putf(d, ".%s", SYM_NAME(ks));
1016 showkeydata(&ks->k, ind + 2, o, d);
1017 }
1018 INDENT(ind);
1019 fputs("}\n", stdout);
1020 } break;
1021 }
1022
1023 #undef INDENT
1024 }
1025
1026 /* --- @showkey@ --- *
1027 *
1028 * Arguments: @key *k@ = pointer to key to show
1029 * @listopts *o@ = pointer to listing options
1030 *
1031 * Returns: ---
1032 *
1033 * Use: Emits a listing of a particular key.
1034 */
1035
1036 static void showkey(key *k, listopts *o)
1037 {
1038 char ebuf[24], dbuf[24];
1039 struct tm *tm;
1040
1041 /* --- Skip the key if the filter doesn't match --- */
1042
1043 if (!key_match(&k->k, &o->kf))
1044 return;
1045
1046 /* --- Sort out the expiry and deletion times --- */
1047
1048 if (KEY_EXPIRED(o->t, k->exp))
1049 strcpy(ebuf, "expired");
1050 else if (k->exp == KEXP_FOREVER)
1051 strcpy(ebuf, "forever");
1052 else {
1053 tm = (o->f & f_utc) ? gmtime(&k->exp) : localtime(&k->exp);
1054 strftime(ebuf, sizeof(ebuf), o->tfmt, tm);
1055 }
1056
1057 if (KEY_EXPIRED(o->t, k->del))
1058 strcpy(dbuf, "deleted");
1059 else if (k->del == KEXP_FOREVER)
1060 strcpy(dbuf, "forever");
1061 else {
1062 tm = (o->f & f_utc) ? gmtime(&k->del) : localtime(&k->del);
1063 strftime(dbuf, sizeof(dbuf), o->tfmt, tm);
1064 }
1065
1066 /* --- If in compact format, just display and quit --- */
1067
1068 if (!o->v) {
1069 if (!(o->f & f_newline)) {
1070 printf("%8s %-20s %-20s %-10s %-10s\n",
1071 "Id", "Tag", "Type", "Expire", "Delete");
1072 }
1073 printf("%08lx %-20s %-20s %-10s %-10s\n",
1074 (unsigned long)k->id, k->tag ? k->tag : "<none>",
1075 k->type, ebuf, dbuf);
1076 o->f |= f_newline;
1077 return;
1078 }
1079
1080 /* --- Display the standard header --- */
1081
1082 if (o->f & f_newline)
1083 fputc('\n', stdout);
1084 printf("keyid: %08lx\n", (unsigned long)k->id);
1085 printf("tag: %s\n", k->tag ? k->tag : "<none>");
1086 printf("type: %s\n", k->type);
1087 printf("expiry: %s\n", ebuf);
1088 printf("delete: %s\n", dbuf);
1089 printf("comment: %s\n", k->c ? k->c : "<none>");
1090
1091 /* --- Display the attributes --- */
1092
1093 if (o->v > 1) {
1094 key_attriter i;
1095 const char *av, *an;
1096
1097 o->f &= ~f_attr;
1098 printf("attributes:");
1099 for (key_mkattriter(&i, k); key_nextattr(&i, &an, &av); ) {
1100 printf("\n\t%s = %s", an, av);
1101 o->f |= f_attr;
1102 }
1103 if (o->f & f_attr)
1104 fputc('\n', stdout);
1105 else
1106 puts(" <none>");
1107 }
1108
1109 /* --- If dumping requested, dump the raw key data --- */
1110
1111 if (o->v > 2) {
1112 dstr d = DSTR_INIT;
1113 fputs("key:", stdout);
1114 key_fulltag(k, &d);
1115 showkeydata(&k->k, 0, o, &d);
1116 dstr_destroy(&d);
1117 }
1118
1119 o->f |= f_newline;
1120 }
1121
1122 /* --- @cmd_list@ --- */
1123
1124 static int cmd_list(int argc, char *argv[])
1125 {
1126 key_file f;
1127 key *k;
1128 listopts o = { 0, 0, 0, 0, { 0, 0 } };
1129
1130 /* --- Parse subcommand options --- */
1131
1132 for (;;) {
1133 static struct option opt[] = {
1134 { "quiet", 0, 0, 'q' },
1135 { "verbose", 0, 0, 'v' },
1136 { "utc", 0, 0, 'u' },
1137 { "filter", OPTF_ARGREQ, 0, 'f' },
1138 { 0, 0, 0, 0 }
1139 };
1140 int i = mdwopt(argc, argv, "+uqvf:", opt, 0, 0, 0);
1141 if (i < 0)
1142 break;
1143
1144 switch (i) {
1145 case 'u':
1146 o.f |= f_utc;
1147 break;
1148 case 'q':
1149 if (o.v)
1150 o.v--;
1151 break;
1152 case 'v':
1153 o.v++;
1154 break;
1155 case 'f': {
1156 char *p;
1157 int e = key_readflags(optarg, &p, &o.kf.f, &o.kf.m);
1158 if (e || *p)
1159 die(EXIT_FAILURE, "bad filter string `%s'", optarg);
1160 } break;
1161 default:
1162 o.f |= f_bogus;
1163 break;
1164 }
1165 }
1166
1167 if (o.f & f_bogus)
1168 die(EXIT_FAILURE, "Usage: list [-uqv] [-f filter] [tag...]");
1169
1170 /* --- Open the key file --- */
1171
1172 doopen(&f, KOPEN_READ);
1173 o.t = time(0);
1174
1175 /* --- Set up the time format --- */
1176
1177 if (!o.v)
1178 o.tfmt = "%Y-%m-%d";
1179 else if (o.f & f_utc)
1180 o.tfmt = "%Y-%m-%d %H:%M:%S UTC";
1181 else
1182 o.tfmt = "%Y-%m-%d %H:%M:%S %Z";
1183
1184 /* --- If specific keys were requested use them, otherwise do all --- *
1185 *
1186 * Some day, this might turn into a wildcard match.
1187 */
1188
1189 if (optind < argc) {
1190 do {
1191 if ((k = key_bytag(&f, argv[optind])) != 0)
1192 showkey(k, &o);
1193 else {
1194 moan("key `%s' not found", argv[optind]);
1195 o.f |= f_bogus;
1196 }
1197 optind++;
1198 } while (optind < argc);
1199 } else {
1200 key_iter i;
1201 for (key_mkiter(&i, &f); (k = key_next(&i)) != 0; )
1202 showkey(k, &o);
1203 }
1204
1205 /* --- Done --- */
1206
1207 doclose(&f);
1208 if (o.f & f_bogus)
1209 return (EXIT_FAILURE);
1210 else
1211 return (0);
1212 }
1213
1214 /*----- Command implementation --------------------------------------------*/
1215
1216 /* --- @cmd_expire@ --- */
1217
1218 static int cmd_expire(int argc, char *argv[])
1219 {
1220 key_file f;
1221 key *k;
1222 int i;
1223 int rc = 0;
1224
1225 if (argc < 2)
1226 die(EXIT_FAILURE, "Usage: expire tag...");
1227 doopen(&f, KOPEN_WRITE);
1228 for (i = 1; i < argc; i++) {
1229 if ((k = key_bytag(&f, argv[i])) != 0)
1230 key_expire(&f, k);
1231 else {
1232 moan("key `%s' not found", argv[i]);
1233 rc = 1;
1234 }
1235 }
1236 doclose(&f);
1237 return (rc);
1238 }
1239
1240 /* --- @cmd_delete@ --- */
1241
1242 static int cmd_delete(int argc, char *argv[])
1243 {
1244 key_file f;
1245 key *k;
1246 int i;
1247 int rc = 0;
1248
1249 if (argc < 2)
1250 die(EXIT_FAILURE, "Usage: delete tag...");
1251 doopen(&f, KOPEN_WRITE);
1252 for (i = 1; i < argc; i++) {
1253 if ((k = key_bytag(&f, argv[i])) != 0)
1254 key_delete(&f, k);
1255 else {
1256 moan("key `%s' not found", argv[i]);
1257 rc = 1;
1258 }
1259 }
1260 doclose(&f);
1261 return (rc);
1262 }
1263
1264 /* --- @cmd_setattr@ --- */
1265
1266 static int cmd_setattr(int argc, char *argv[])
1267 {
1268 key_file f;
1269 key *k;
1270
1271 if (argc < 3)
1272 die(EXIT_FAILURE, "Usage: setattr tag attr...");
1273 doopen(&f, KOPEN_WRITE);
1274 if ((k = key_bytag(&f, argv[1])) == 0)
1275 die(EXIT_FAILURE, "key `%s' not found", argv[1]);
1276 setattr(&f, k, argv + 2);
1277 doclose(&f);
1278 return (0);
1279 }
1280
1281 /* --- @cmd_finger@ --- */
1282
1283 static void fingerprint(key *k, const key_filter *kf)
1284 {
1285 rmd160_ctx r;
1286 octet hash[RMD160_HASHSZ];
1287 dstr d = DSTR_INIT;
1288 int i;
1289
1290 if (!key_encode(&k->k, &d, kf))
1291 return;
1292 rmd160_init(&r);
1293 rmd160_hash(&r, d.buf, d.len);
1294 rmd160_done(&r, hash);
1295
1296 DRESET(&d);
1297 key_fulltag(k, &d);
1298 for (i = 0; i < sizeof(hash); i++) {
1299 if (i && i % 4 == 0)
1300 putchar('-');
1301 printf("%02x", hash[i]);
1302 }
1303 printf(" %s\n", d.buf);
1304 dstr_destroy(&d);
1305 }
1306
1307 static int cmd_finger(int argc, char *argv[])
1308 {
1309 key_file f;
1310 int rc = 0;
1311 key_filter kf = { KF_NONSECRET, KF_NONSECRET };
1312
1313 for (;;) {
1314 static struct option opt[] = {
1315 { "filter", OPTF_ARGREQ, 0, 'f' },
1316 { 0, 0, 0, 0 }
1317 };
1318 int i = mdwopt(argc, argv, "f:", opt, 0, 0, 0);
1319 if (i < 0)
1320 break;
1321 switch (i) {
1322 case 'f': {
1323 char *p;
1324 int err = key_readflags(optarg, &p, &kf.f, &kf.m);
1325 if (err || *p)
1326 die(EXIT_FAILURE, "bad filter string `%s'", optarg);
1327 } break;
1328 default:
1329 rc = 1;
1330 break;
1331 }
1332 }
1333
1334 argv += optind; argc -= optind;
1335 if (rc)
1336 die(EXIT_FAILURE, "Usage: fingerprint [-f filter] [tag...]");
1337
1338 doopen(&f, KOPEN_READ);
1339
1340 if (argc) {
1341 int i;
1342 for (i = 0; i < argc; i++) {
1343 key *k = key_bytag(&f, argv[i]);
1344 if (k)
1345 fingerprint(k, &kf);
1346 else {
1347 rc = 1;
1348 moan("key `%s' not found", argv[i]);
1349 }
1350 }
1351 } else {
1352 key_iter i;
1353 key *k;
1354 for (key_mkiter(&i, &f); (k = key_next(&i)) != 0; )
1355 fingerprint(k, &kf);
1356 }
1357 return (rc);
1358 }
1359
1360 /* --- @cmd_comment@ --- */
1361
1362 static int cmd_comment(int argc, char *argv[])
1363 {
1364 key_file f;
1365 key *k;
1366 int err;
1367
1368 if (argc < 2 || argc > 3)
1369 die(EXIT_FAILURE, "Usage: comment tag [comment]");
1370 doopen(&f, KOPEN_WRITE);
1371 if ((k = key_bytag(&f, argv[1])) == 0)
1372 die(EXIT_FAILURE, "key `%s' not found", argv[1]);
1373 if ((err = key_setcomment(&f, k, argv[2])) != 0)
1374 die(EXIT_FAILURE, "bad comment `%s': %s", argv[2], key_strerror(err));
1375 doclose(&f);
1376 return (0);
1377 }
1378
1379 /* --- @cmd_tag@ --- */
1380
1381 static int cmd_tag(int argc, char *argv[])
1382 {
1383 key_file f;
1384 key *k;
1385 int err;
1386
1387 if (argc < 2 || argc > 3)
1388 die(EXIT_FAILURE, "Usage: tag tag [new-tag]");
1389 doopen(&f, KOPEN_WRITE);
1390 if ((k = key_bytag(&f, argv[1])) == 0)
1391 die(EXIT_FAILURE, "key `%s' not found", argv[1]);
1392 if ((err = key_settag(&f, k, argv[2])) != 0)
1393 die(EXIT_FAILURE, "bad tag `%s': %s", argv[2], key_strerror(err));
1394 doclose(&f);
1395 return (0);
1396 }
1397
1398 /* --- @cmd_lock@ --- */
1399
1400 static int cmd_lock(int argc, char *argv[])
1401 {
1402 key_file f;
1403 key *k;
1404 key_data *kd;
1405 dstr d = DSTR_INIT;
1406
1407 if (argc != 2)
1408 die(EXIT_FAILURE, "Usage: lock qtag");
1409 doopen(&f, KOPEN_WRITE);
1410 if (key_qtag(&f, argv[1], &d, &k, &kd))
1411 die(EXIT_FAILURE, "key `%s' not found", argv[1]);
1412 if (kd->e == KENC_ENCRYPT && key_punlock(d.buf, kd, kd))
1413 die(EXIT_FAILURE, "couldn't unlock key `%s'", d.buf);
1414 if (key_plock(d.buf, kd, kd))
1415 die(EXIT_FAILURE, "failed to lock key `%s'", d.buf);
1416 f.f |= KF_MODIFIED;
1417 doclose(&f);
1418 return (0);
1419 }
1420
1421 /* --- @cmd_unlock@ --- */
1422
1423 static int cmd_unlock(int argc, char *argv[])
1424 {
1425 key_file f;
1426 key *k;
1427 key_data *kd;
1428 dstr d = DSTR_INIT;
1429
1430 if (argc != 2)
1431 die(EXIT_FAILURE, "Usage: unlock qtag");
1432 doopen(&f, KOPEN_WRITE);
1433 if (key_qtag(&f, argv[1], &d, &k, &kd))
1434 die(EXIT_FAILURE, "key `%s' not found", argv[1]);
1435 if (kd->e != KENC_ENCRYPT)
1436 die(EXIT_FAILURE, "key `%s' is not encrypted", d.buf);
1437 if (kd->e == KENC_ENCRYPT && key_punlock(d.buf, kd, kd))
1438 die(EXIT_FAILURE, "couldn't unlock key `%s'", d.buf);
1439 f.f |= KF_MODIFIED;
1440 doclose(&f);
1441 return (0);
1442 }
1443
1444 /* --- @cmd_extract@ --- */
1445
1446 static int cmd_extract(int argc, char *argv[])
1447 {
1448 key_file f;
1449 key *k;
1450 int i;
1451 int rc = 0;
1452 key_filter kf = { 0, 0 };
1453 FILE *fp;
1454
1455 for (;;) {
1456 static struct option opt[] = {
1457 { "filter", OPTF_ARGREQ, 0, 'f' },
1458 { 0, 0, 0, 0 }
1459 };
1460 int i = mdwopt(argc, argv, "f:", opt, 0, 0, 0);
1461 if (i < 0)
1462 break;
1463 switch (i) {
1464 case 'f': {
1465 char *p;
1466 int err = key_readflags(optarg, &p, &kf.f, &kf.m);
1467 if (err || *p)
1468 die(EXIT_FAILURE, "bad filter string `%s'", optarg);
1469 } break;
1470 default:
1471 rc = 1;
1472 break;
1473 }
1474 }
1475
1476 argv += optind; argc -= optind;
1477 if (rc || argc < 1)
1478 die(EXIT_FAILURE, "Usage: extract [-f filter] file [tag...]");
1479 if (strcmp(*argv, "-") == 0)
1480 fp = stdout;
1481 else if (!(fp = fopen(*argv, "w"))) {
1482 die(EXIT_FAILURE, "couldn't open `%s' for writing: %s",
1483 *argv, strerror(errno));
1484 }
1485
1486 doopen(&f, KOPEN_READ);
1487 if (argc < 2) {
1488 key_iter i;
1489 key *k;
1490 for (key_mkiter(&i, &f); (k = key_next(&i)) != 0; )
1491 key_extract(&f, k, fp, &kf);
1492 } else {
1493 for (i = 1; i < argc; i++) {
1494 if ((k = key_bytag(&f, argv[i])) != 0)
1495 key_extract(&f, k, fp, &kf);
1496 else {
1497 moan("key `%s' not found", argv[i]);
1498 rc = 1;
1499 }
1500 }
1501 }
1502 if (fclose(fp))
1503 die(EXIT_FAILURE, "error writing file: %s", strerror(errno));
1504 doclose(&f);
1505 return (rc);
1506 }
1507
1508 /* --- @cmd_tidy@ --- */
1509
1510 static int cmd_tidy(int argc, char *argv[])
1511 {
1512 key_file f;
1513 if (argc != 1)
1514 die(EXIT_FAILURE, "usage: tidy");
1515 doopen(&f, KOPEN_WRITE);
1516 f.f |= KF_MODIFIED; /* Nasty hack */
1517 doclose(&f);
1518 return (0);
1519 }
1520
1521 /* --- @cmd_merge@ --- */
1522
1523 static int cmd_merge(int argc, char *argv[])
1524 {
1525 key_file f;
1526 FILE *fp;
1527
1528 if (argc != 2)
1529 die(EXIT_FAILURE, "Usage: merge file");
1530 if (strcmp(argv[1], "-") == 0)
1531 fp = stdin;
1532 else if (!(fp = fopen(argv[1], "r"))) {
1533 die(EXIT_FAILURE, "couldn't open `%s' for writing: %s",
1534 argv[1], strerror(errno));
1535 }
1536
1537 doopen(&f, KOPEN_WRITE);
1538 key_merge(&f, argv[1], fp, key_moan, 0);
1539 doclose(&f);
1540 return (0);
1541 }
1542
1543 /*----- Main command table ------------------------------------------------*/
1544
1545 static struct cmd {
1546 const char *name;
1547 int (*cmd)(int /*argc*/, char */*argv*/[]);
1548 const char *help;
1549 } cmds[] = {
1550 { "add", cmd_add,
1551 "add [options] type [attr...]\n\
1552 Options: [-lqLS] [-a alg] [-b|-B bits] [-p param] [-r tag]\n\
1553 [-e expire] [-t tag] [-c comment]"
1554 },
1555 { "expire", cmd_expire, "expire tag..." },
1556 { "delete", cmd_delete, "delete tag..." },
1557 { "tag", cmd_tag, "tag tag [new-tag]" },
1558 { "setattr", cmd_setattr, "setattr tag attr..." },
1559 { "comment", cmd_comment, "comment tag [comment]" },
1560 { "lock", cmd_lock, "lock qtag" },
1561 { "unlock", cmd_unlock, "unlock qtag" },
1562 { "list", cmd_list, "list [-uqv] [-f filter] [tag...]" },
1563 { "fingerprint", cmd_finger, "fingerprint [-f filter] [tag...]" },
1564 { "tidy", cmd_tidy, "tidy" },
1565 { "extract", cmd_extract, "extract [-f filter] file [tag...]" },
1566 { "merge", cmd_merge, "merge file" },
1567 { 0, 0, 0 }
1568 };
1569
1570 typedef struct cmd cmd;
1571
1572 /*----- Main code ---------------------------------------------------------*/
1573
1574 /* --- Helpful GNUy functions --- */
1575
1576 void usage(FILE *fp)
1577 {
1578 pquis(fp, "Usage: $ [-k file] [-i tag] [-t type] command [args]\n");
1579 }
1580
1581 void version(FILE *fp)
1582 {
1583 pquis(fp, "$, Catacomb version " VERSION "\n");
1584 }
1585
1586 void help(FILE *fp)
1587 {
1588 cmd *c;
1589 version(fp);
1590 fputc('\n', fp);
1591 usage(fp);
1592 fputs("\n\
1593 Performs various simple key management operations. Command line options\n\
1594 recognized are:\n\
1595 \n\
1596 -h, --help Display this help text.\n\
1597 -v, --version Display version number.\n\
1598 -u, --usage Display short usage summary.\n\
1599 \n\
1600 -k, --keyring=FILE Read and write keys in FILE.\n\
1601 -i, --id=TAG Use key TAG for random number generator.\n\
1602 -t, --type=TYPE Use key TYPE for random number generator.\n\
1603 \n\
1604 The following commands are understood:\n\n",
1605 fp);
1606 for (c = cmds; c->name; c++)
1607 fprintf(fp, "%s\n", c->help);
1608 }
1609
1610 /* --- @main@ --- *
1611 *
1612 * Arguments: @int argc@ = number of command line arguments
1613 * @char *argv[]@ = array of command line arguments
1614 *
1615 * Returns: Nonzero on failure.
1616 *
1617 * Use: Main program. Performs simple key management functions.
1618 */
1619
1620 int main(int argc, char *argv[])
1621 {
1622 unsigned f = 0;
1623
1624 enum {
1625 f_bogus = 1
1626 };
1627
1628 /* --- Initialization --- */
1629
1630 ego(argv[0]);
1631 sub_init();
1632
1633 /* --- Parse command line options --- */
1634
1635 for (;;) {
1636 static struct option opt[] = {
1637
1638 /* --- Standard GNUy help options --- */
1639
1640 { "help", 0, 0, 'h' },
1641 { "version", 0, 0, 'v' },
1642 { "usage", 0, 0, 'u' },
1643
1644 /* --- Real live useful options --- */
1645
1646 { "keyring", OPTF_ARGREQ, 0, 'k' },
1647 { "id", OPTF_ARGREQ, 0, 'i' },
1648 { "type", OPTF_ARGREQ, 0, 't' },
1649
1650 /* --- Magic terminator --- */
1651
1652 { 0, 0, 0, 0 }
1653 };
1654 int i = mdwopt(argc, argv, "+hvu k:i:t:", opt, 0, 0, 0);
1655
1656 if (i < 0)
1657 break;
1658 switch (i) {
1659
1660 /* --- GNU help options --- */
1661 case 'h':
1662 help(stdout);
1663 exit(0);
1664 case 'v':
1665 version(stdout);
1666 exit(0);
1667 case 'u':
1668 usage(stdout);
1669 exit(0);
1670
1671 /* --- Real useful options --- */
1672
1673 case 'k':
1674 keyfile = optarg;
1675 break;
1676
1677 /* --- Bogosity --- */
1678
1679 default:
1680 f |= f_bogus;
1681 break;
1682 }
1683 }
1684
1685 /* --- Complain about excessive bogons --- */
1686
1687 if (f & f_bogus || optind == argc) {
1688 usage(stderr);
1689 exit(1);
1690 }
1691
1692 /* --- Initialize the Catacomb random number generator --- */
1693
1694 rand_noisesrc(RAND_GLOBAL, &noise_source);
1695 rand_seed(RAND_GLOBAL, 160);
1696
1697 /* --- Dispatch to appropriate command handler --- */
1698
1699 argc -= optind;
1700 argv += optind;
1701 optind = 0;
1702
1703 {
1704 cmd *c, *chosen = 0;
1705 size_t sz = strlen(argv[0]);
1706
1707 for (c = cmds; c->name; c++) {
1708 if (strncmp(argv[0], c->name, sz) == 0) {
1709 if (c->name[sz] == 0) {
1710 chosen = c;
1711 break;
1712 } else if (chosen)
1713 die(EXIT_FAILURE, "ambiguous command name `%s'", argv[0]);
1714 else
1715 chosen = c;
1716 }
1717 }
1718 if (!chosen)
1719 die(EXIT_FAILURE, "unknown command name `%s'", argv[0]);
1720 return (chosen->cmd(argc, argv));
1721 }
1722 }
1723
1724 /*----- That's all, folks -------------------------------------------------*/
Catacomb cryptographic library (downstream of http://git.distorted.org.uk/~mdw/catacomb/)