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Major memory management overhaul. Added arena support. Use the secure
[u/mdw/catacomb] / keyutil.c
CommitLineData
d03ab969 1/* -*-c-*-
2 *
9219a5d6 3 * $Id: keyutil.c,v 1.6 2000/06/17 11:28:22 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 $
9219a5d6 33 * Revision 1.6 2000/06/17 11:28:22 mdw
34 * Use secure memory interface from MP library. `rand_getgood' is
35 * deprecated.
36 *
052b36d0 37 * Revision 1.5 2000/02/12 18:21:03 mdw
38 * Overhaul of key management (again).
39 *
252c122d 40 * Revision 1.4 1999/12/22 15:48:10 mdw
41 * Track new key-management changes. Support new key generation
42 * algorithms.
43 *
ce1f2631 44 * Revision 1.3 1999/11/02 15:23:24 mdw
45 * Fix newlines in keyring list.
46 *
cc321283 47 * Revision 1.2 1999/10/15 21:05:28 mdw
48 * In `key list', show timezone for local times, and support `-u' option
49 * for UTC output.
50 *
d03ab969 51 * Revision 1.1 1999/09/03 08:41:12 mdw
52 * Initial import.
53 *
54 */
55
56/*----- Header files ------------------------------------------------------*/
57
58#include "config.h"
59
60#include <errno.h>
61#include <stdio.h>
62#include <stdlib.h>
63#include <string.h>
64#include <time.h>
65
252c122d 66#include <mLib/base64.h>
d03ab969 67#include <mLib/mdwopt.h>
68#include <mLib/quis.h>
69#include <mLib/report.h>
70#include <mLib/sub.h>
71
72#include <noise.h>
73#include <rand.h>
74
252c122d 75#include "bbs.h"
052b36d0 76#include "dh.h"
252c122d 77#include "dsa.h"
78#include "fibrand.h"
d03ab969 79#include "getdate.h"
80#include "key.h"
252c122d 81#include "mp.h"
82#include "mpmont.h"
83#include "mprand.h"
84#include "mptext.h"
85#include "pgen.h"
86#include "rsa.h"
d03ab969 87
88/*----- Handy global state ------------------------------------------------*/
89
90static const char *keyfile = "keyring";
91
92/*----- Useful shared functions -------------------------------------------*/
93
94/* --- @doopen@ --- *
95 *
96 * Arguments: @key_file *f@ = pointer to key file block
97 * @unsigned how@ = method to open file with
98 *
99 * Returns: ---
100 *
101 * Use: Opens a key file and handles errors by panicking
102 * appropriately.
103 */
104
105static void doopen(key_file *f, unsigned how)
106{
252c122d 107 if (key_open(f, keyfile, how, key_moan, 0))
052b36d0 108 die(1, "couldn't open keyring `%s': %s", keyfile, strerror(errno));
d03ab969 109}
110
111/* --- @doclose@ --- *
112 *
113 * Arguments: @key_file *f@ = pointer to key file block
114 *
115 * Returns: ---
116 *
117 * Use: Closes a key file and handles errors by panicking
118 * appropriately.
119 */
120
121static void doclose(key_file *f)
122{
123 switch (key_close(f)) {
124 case KWRITE_FAIL:
125 die(EXIT_FAILURE, "couldn't write file `%s': %s",
126 keyfile, strerror(errno));
127 case KWRITE_BROKEN:
128 die(EXIT_FAILURE, "keyring file `%s' broken: %s (repair manually)",
129 keyfile, strerror(errno));
130 }
131}
132
133/* --- @setattr@ --- *
134 *
135 * Arguments: @key_file *f@ = pointer to key file block
136 * @key *k@ = pointer to key block
137 * @char *v[]@ = array of assignments (overwritten!)
138 *
139 * Returns: ---
140 *
141 * Use: Applies the attribute assignments to the key.
142 */
143
144static void setattr(key_file *f, key *k, char *v[])
145{
146 while (*v) {
252c122d 147 int err;
d03ab969 148 char *p = *v;
149 size_t eq = strcspn(p, "=");
150 if (p[eq] == 0)
151 moan("invalid assignment: `%s'", p);
152 p[eq] = 0;
153 p += eq + 1;
252c122d 154 if ((err = key_putattr(f, k, *v, *p ? p : 0)) != 0)
155 die(EXIT_FAILURE, "couldn't set attributes: %s", key_strerror(err));
d03ab969 156 v++;
157 }
158}
159
252c122d 160/*----- Key generation ----------------------------------------------------*/
161
162/* --- Key generation parameters --- */
163
164typedef struct keyopts {
165 key_file *kf; /* Pointer to key file */
166 key *k; /* Pointer to the actual key */
167 dstr tag; /* Full tag name for the key */
168 unsigned f; /* Flags for the new key */
169 unsigned bits, qbits; /* Bit length for the new key */
170 key *p; /* Parameters key-data */
171} keyopts;
172
173enum {
174 f_bogus = 1, /* Error in parsing */
175 f_lock = 2, /* Passphrase-lock private key */
176 f_quiet = 4 /* Don't show a progress indicator */
177};
178
179/* --- @dolock@ --- *
180 *
181 * Arguments: @keyopts *k@ = key generation options
182 * @key_data *kd@ = pointer to key data to lock
183 * @const char *t@ = tag suffix or null
184 *
185 * Returns: ---
186 *
187 * Use: Does passphrase locking on new keys.
188 */
189
190static void dolock(keyopts *k, key_data *kd, const char *t)
191{
192 if (!(k->f & f_lock))
193 return;
194 if (t)
195 dstr_putf(&k->tag, ".%s", t);
196 if (key_plock(k->tag.buf, kd, kd))
197 die(EXIT_FAILURE, "couldn't lock key");
198}
199
200/* --- @mpkey@ --- *
201 *
202 * Arguments: @key_data *kd@ = pointer to parent key block
203 * @const char *tag@ = pointer to tag string
204 * @mp *m@ = integer to store
205 * @unsigned f@ = flags to set
206 *
207 * Returns: ---
208 *
209 * Use: Sets a multiprecision integer subkey.
210 */
211
212static void mpkey(key_data *kd, const char *tag, mp *m, unsigned f)
213{
214 key_data *kkd = key_structcreate(kd, tag);
215 key_mp(kkd, m);
216 kkd->e |= f;
217}
218
219/* --- @copyparam@ --- *
220 *
221 * Arguments: @keyopts *k@ = pointer to key options
222 * @const char **pp@ = checklist of parameters
223 *
224 * Returns: Nonzero if parameters copied; zero if you have to generate
225 * them.
226 *
227 * Use: Copies parameters from a source key to the current one.
228 */
229
230static int copyparam(keyopts *k, const char **pp)
231{
232 key_filter kf;
233
234 /* --- Quick check if no parameters supplied --- */
235
236 if (!k->p)
237 return (0);
238
239 /* --- Run through the checklist --- */
240
241 while (*pp) {
242 key_data *kd = key_structfind(&k->p->k, *pp);
243 if (!kd)
244 die(EXIT_FAILURE, "bad parameter key: parameter `%s' not found", *pp);
245 if ((kd->e & KF_CATMASK) != KCAT_SHARE)
246 die(EXIT_FAILURE, "bad parameter key: subkey `%s' is not shared", *pp);
247 pp++;
248 }
249
250 /* --- Copy over the parameters --- */
251
252 kf.f = KCAT_SHARE;
253 kf.m = KF_CATMASK;
254 if (!key_copy(&k->k->k, &k->p->k, &kf))
255 die(EXIT_FAILURE, "unexpected failure while copying parameters");
256 return (1);
257}
258
259/* --- @getmp@ --- *
260 *
261 * Arguments: @key_data *k@ = pointer to key data block
262 * @const char *tag@ = tag string to use
263 *
264 * Returns: Pointer to multiprecision integer key item.
265 *
266 * Use: Fetches an MP key component.
267 */
268
269static mp *getmp(key_data *k, const char *tag)
270{
271 k = key_structfind(k, tag);
272 if (!k)
273 die(EXIT_FAILURE, "unexpected failure looking up subkey `%s'", tag);
274 if ((k->e & KF_ENCMASK) != KENC_MP)
275 die(EXIT_FAILURE, "subkey `%s' has an incompatible type");
276 return (k->u.m);
277}
278
052b36d0 279/* --- @keyrand@ --- *
280 *
281 * Arguments: @key_file *kf@ = pointer to key file
282 * @const char *id@ = pointer to key id (or null)
283 *
284 * Returns: ---
285 *
286 * Use: Keys the random number generator.
287 */
288
289static void keyrand(key_file *kf, const char *id)
290{
291 key *k;
292
293 /* --- Find the key --- */
294
295 if (id) {
296 if ((k = key_bytag(kf, id)) == 0)
297 die(EXIT_FAILURE, "key `%s' not found", id);
298 } else
299 k = key_bytype(kf, "catacomb-rand");
300
301 if (k) {
302 key_data *kd = &k->k, kkd;
303
304 again:
305 switch (kd->e & KF_ENCMASK) {
306 case KENC_BINARY:
307 break;
308 case KENC_ENCRYPT: {
309 dstr d = DSTR_INIT;
310 key_fulltag(k, &d);
311 if (key_punlock(d.buf, kd, &kkd))
312 die(EXIT_FAILURE, "error unlocking key `%s'", d.buf);
313 dstr_destroy(&d);
314 kd = &kkd;
315 } goto again;
316 default: {
317 dstr d = DSTR_INIT;
318 key_fulltag(k, &d);
319 die(EXIT_FAILURE, "bad encoding type for key `%s'", d.buf);
320 } break;
321 }
322
323 /* --- Key the generator --- */
324
325 rand_key(RAND_GLOBAL, kd->u.k.k, kd->u.k.sz);
326 if (kd == &kkd)
327 key_destroy(&kkd);
328 }
329}
330
252c122d 331/* --- Key generation algorithms --- */
332
333static void alg_binary(keyopts *k)
334{
335 unsigned sz;
336 unsigned m;
337 octet *p;
338
339 if (!k->bits)
340 k->bits = 128;
341 if (k->p)
342 die(EXIT_FAILURE, "no shared parameters for binary keys");
343
344 sz = (k->bits + 7) >> 3;
345 p = sub_alloc(sz);
346 m = (1 << (((k->bits - 1) & 7) + 1)) - 1;
9219a5d6 347 rand_get(RAND_GLOBAL, p, sz);
252c122d 348 *p &= m;
349 key_binary(&k->k->k, p, sz);
350 k->k->k.e |= KCAT_SYMM | KF_BURN;
351 memset(p, 0, sz);
352 sub_free(p, sz);
353 dolock(k, &k->k->k, 0);
354}
355
356static void alg_des(keyopts *k)
357{
358 unsigned sz;
359 octet *p;
360 int i;
361
362 if (!k->bits)
363 k->bits = 112;
364 if (k->p)
365 die(EXIT_FAILURE, "no shared parameters for DES keys");
366 if (k->bits % 56 || k->bits > 168)
367 die(EXIT_FAILURE, "DES keys must be 56, 112 or 168 bits long");
368
369 sz = k->bits / 7;
370 p = sub_alloc(sz);
9219a5d6 371 rand_get(RAND_GLOBAL, p, sz); /* Too much work done here! */
252c122d 372 for (i = 0; i < sz; i++) {
052b36d0 373 octet x = p[i] | 0x01;
252c122d 374 x = x ^ (x >> 4);
375 x = x ^ (x >> 2);
052b36d0 376 x = x ^ (x >> 1);
252c122d 377 p[i] = (p[i] & 0xfe) | (x & 0x01);
378 }
379 key_binary(&k->k->k, p, sz);
380 k->k->k.e |= KCAT_SYMM | KF_BURN;
381 memset(p, 0, sz);
382 sub_free(p, sz);
383 dolock(k, &k->k->k, 0);
384}
385
386static void alg_rsa(keyopts *k)
387{
388 rsa_param rp;
389 key_data *kd;
390
391 /* --- Sanity checking --- */
392
393 if (k->p)
394 die(EXIT_FAILURE, "no shared parameters for RSA keys");
395 if (!k->bits)
396 k->bits = 1024;
397
398 /* --- Generate the RSA parameters --- */
399
400 if (rsa_gen(&rp, k->bits, &rand_global, 0,
401 (k->f & f_quiet) ? 0 : pgen_ev, 0))
402 die(EXIT_FAILURE, "RSA key generation failed");
403
404 /* --- Run a test encryption --- */
405
406 {
407 grand *g = fibrand_create(rand_global.ops->word(&rand_global));
408 mpmont mm;
409 mp *m = mprand_range(MP_NEW, rp.n, g, 0);
410 mp *c;
411
412 /* --- Encrypt the plaintext --- */
413
414 mpmont_create(&mm, rp.n);
415 c = mpmont_exp(&mm, MP_NEW, m, rp.e);
416 mpmont_destroy(&mm);
417
418 /* --- Decrypt the ciphertext --- */
419
420 c = rsa_decrypt(&rp, c, c, g);
421
422 /* --- Check everything went OK --- */
423
424 if (MP_CMP(c, !=, m))
425 die(EXIT_FAILURE, "test encryption failed");
426 mp_drop(c);
427 mp_drop(m);
428 g->ops->destroy(g);
429 }
430
431 /* --- Allrighty then --- */
432
433 kd = &k->k->k;
434 key_structure(kd);
435 mpkey(kd, "n", rp.n, KCAT_PUB);
436 mpkey(kd, "e", rp.e, KCAT_PUB);
437
438 kd = key_structcreate(kd, "private");
439 key_structure(kd);
440 mpkey(kd, "d", rp.d, KCAT_PRIV | KF_BURN);
441 mpkey(kd, "p", rp.p, KCAT_PRIV | KF_BURN);
442 mpkey(kd, "q", rp.q, KCAT_PRIV | KF_BURN);
443 mpkey(kd, "q-inv", rp.q_inv, KCAT_PRIV | KF_BURN);
444 mpkey(kd, "d-mod-p", rp.dp, KCAT_PRIV | KF_BURN);
445 mpkey(kd, "d-mod-q", rp.dq, KCAT_PRIV | KF_BURN);
446 dolock(k, kd, "private");
447
448 mp_drop(rp.p); mp_drop(rp.q); mp_drop(rp.n); mp_drop(rp.q_inv);
449 mp_drop(rp.e); mp_drop(rp.d); mp_drop(rp.dp); mp_drop(rp.dq);
450}
451
452static 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);
9219a5d6 474 rand_get(RAND_GLOBAL, p, sz);
252c122d 475
476 /* --- Allocate the parameters --- */
477
478 if (dsa_seed(&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
505static 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
9219a5d6 521 x = mprand_range(MP_NEWSEC, q, &rand_global, 0);
252c122d 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");
052b36d0 533
534 mp_drop(x); mp_drop(y);
252c122d 535}
536
537static void alg_dhparam(keyopts *k)
538{
052b36d0 539 static const char *pl[] = { "p", "q", "g", 0 };
252c122d 540 if (!copyparam(k, pl)) {
052b36d0 541 dh_param dp;
252c122d 542 key_data *kd = &k->k->k;
543
544 if (!k->bits)
545 k->bits = 1024;
546
547 /* --- Choose a large safe prime number --- */
548
052b36d0 549 if (dh_gen(&dp, k->qbits, k->bits, 0, &rand_global,
550 (k->f & f_quiet) ? 0 : pgen_ev, 0))
252c122d 551 die(EXIT_FAILURE, "Diffie-Hellman parameter generation failed");
552
553 key_structure(kd);
052b36d0 554 mpkey(kd, "p", dp.p, KCAT_SHARE);
555 mpkey(kd, "q", dp.q, KCAT_SHARE);
556 mpkey(kd, "g", dp.g, KCAT_SHARE);
557 mp_drop(dp.q);
558 mp_drop(dp.p);
559 mp_drop(dp.g);
252c122d 560 }
561}
562
563static void alg_dh(keyopts *k)
564{
565 mp *x, *y;
052b36d0 566 mp *p, *q, *g;
252c122d 567 mpmont mm;
568 key_data *kd = &k->k->k;
569
570 /* --- Get the shared parameters --- */
571
572 alg_dhparam(k);
573 p = getmp(kd, "p");
052b36d0 574 q = getmp(kd, "q");
252c122d 575 g = getmp(kd, "g");
576
577 /* --- Choose a suitable private key --- *
578 *
579 * Since %$g$% has order %$q$%, choose %$x < q$%.
580 */
581
9219a5d6 582 x = mprand_range(MP_NEWSEC, q, &rand_global, 0);
252c122d 583
584 /* --- Compute the public key %$y = g^x \bmod p$% --- */
585
586 mpmont_create(&mm, p);
052b36d0 587 y = mpmont_exp(&mm, MP_NEW, g, x);
252c122d 588 mpmont_destroy(&mm);
589
590 /* --- Store everything away --- */
591
592 mpkey(kd, "y", y, KCAT_PUB);
593
594 kd = key_structcreate(kd, "private");
595 key_structure(kd);
596 mpkey(kd, "x", x, KCAT_PRIV | KF_BURN);
597 dolock(k, kd, "private");
052b36d0 598
599 mp_drop(x); mp_drop(y);
252c122d 600}
601
602static void alg_bbs(keyopts *k)
603{
604 bbs_param bp;
605 key_data *kd;
252c122d 606
607 /* --- Sanity checking --- */
608
609 if (k->p)
610 die(EXIT_FAILURE, "no shared parameters for Blum-Blum-Shub keys");
611 if (!k->bits)
612 k->bits = 1024;
613
614 /* --- Generate the BBS parameters --- */
615
052b36d0 616 if (bbs_gen(&bp, k->bits, &rand_global, 0,
617 (k->f & f_quiet) ? 0 : pgen_ev, 0))
252c122d 618 die(EXIT_FAILURE, "Blum-Blum-Shub key generation failed");
252c122d 619
620 /* --- Allrighty then --- */
621
622 kd = &k->k->k;
623 key_structure(kd);
624 mpkey(kd, "n", bp.n, KCAT_PUB);
625
626 kd = key_structcreate(kd, "private");
627 key_structure(kd);
628 mpkey(kd, "p", bp.p, KCAT_PRIV | KF_BURN);
629 mpkey(kd, "q", bp.q, KCAT_PRIV | KF_BURN);
630 dolock(k, kd, "private");
631
632 mp_drop(bp.p); mp_drop(bp.q); mp_drop(bp.n);
633}
634
635/* --- The algorithm tables --- */
636
637typedef struct keyalg {
638 const char *name;
639 void (*proc)(keyopts *o);
640 const char *help;
641} keyalg;
642
643static keyalg algtab[] = {
644 { "binary", alg_binary, "Plain binary data" },
645 { "des", alg_des, "Binary with DES-style parity" },
646 { "rsa", alg_rsa, "RSA public-key encryption" },
647 { "dsa", alg_dsa, "DSA digital signatures" },
648 { "dsa-param", alg_dsaparam, "DSA shared parameters" },
649 { "dh", alg_dh, "Diffie-Hellman key exchange" },
650 { "dh-param", alg_dhparam, "Diffie-Hellman parameters" },
651 { "bbs", alg_bbs, "Blum-Blum-Shub generator" },
652 { 0, 0 }
653};
d03ab969 654
655/* --- @cmd_add@ --- */
656
657static int cmd_add(int argc, char *argv[])
658{
659 key_file f;
d03ab969 660 time_t exp = KEXP_EXPIRE;
252c122d 661 const char *tag = 0, *ptag = 0;
d03ab969 662 const char *c = 0;
252c122d 663 keyalg *alg = algtab;
052b36d0 664 const char *rtag = 0;
252c122d 665 keyopts k = { 0, 0, DSTR_INIT, 0, 0, 0, 0 };
d03ab969 666
667 /* --- Parse options for the subcommand --- */
668
669 for (;;) {
670 static struct option opt[] = {
252c122d 671 { "algorithm", OPTF_ARGREQ, 0, 'a' },
d03ab969 672 { "bits", OPTF_ARGREQ, 0, 'b' },
252c122d 673 { "qbits", OPTF_ARGREQ, 0, 'B' },
674 { "parameters", OPTF_ARGREQ, 0, 'p' },
d03ab969 675 { "expire", OPTF_ARGREQ, 0, 'e' },
676 { "comment", OPTF_ARGREQ, 0, 'c' },
252c122d 677 { "tag", OPTF_ARGREQ, 0, 't' },
052b36d0 678 { "rand-id", OPTF_ARGREQ, 0, 'r' },
252c122d 679 { "lock", 0, 0, 'l' },
680 { "quiet", 0, 0, 'q' },
d03ab969 681 { 0, 0, 0, 0 }
682 };
052b36d0 683 int i = mdwopt(argc, argv, "+a:b:B:p:e:c:t:r:lq", opt, 0, 0, 0);
d03ab969 684 if (i < 0)
685 break;
686
687 /* --- Handle the various options --- */
688
689 switch (i) {
690
252c122d 691 /* --- Read an algorithm name --- */
692
693 case 'a': {
694 keyalg *a;
695 size_t sz = strlen(optarg);
696
697 if (strcmp(optarg, "list") == 0) {
698 for (a = algtab; a->name; a++)
699 printf("%-10s %s\n", a->name, a->help);
700 return (0);
701 }
702
703 alg = 0;
704 for (a = algtab; a->name; a++) {
705 if (strncmp(optarg, a->name, sz) == 0) {
706 if (a->name[sz] == 0) {
707 alg = a;
708 break;
709 } else if (alg)
710 die(EXIT_FAILURE, "ambiguous algorithm name `%s'", optarg);
711 else
712 alg = a;
713 }
714 }
715 if (!alg)
716 die(EXIT_FAILURE, "unknown algorithm name `%s'", optarg);
717 } break;
718
d03ab969 719 /* --- Bits must be nonzero and a multiple of 8 --- */
720
252c122d 721 case 'b': {
722 char *p;
723 k.bits = strtoul(optarg, &p, 0);
724 if (k.bits == 0 || *p != 0)
725 die(EXIT_FAILURE, "bad bitlength `%s'", optarg);
726 } break;
727
728 case 'B': {
729 char *p;
730 k.qbits = strtoul(optarg, &p, 0);
731 if (k.qbits == 0 || *p != 0)
732 die(EXIT_FAILURE, "bad bitlength `%s'", optarg);
733 } break;
734
735 /* --- Parameter selection --- */
736
737 case 'p':
738 ptag = optarg;
d03ab969 739 break;
740
741 /* --- Expiry dates get passed to @get_date@ for parsing --- */
742
743 case 'e':
252c122d 744 if (strncmp(optarg, "forever", strlen(optarg)) == 0)
d03ab969 745 exp = KEXP_FOREVER;
746 else {
747 exp = get_date(optarg, 0);
748 if (exp == -1)
252c122d 749 die(EXIT_FAILURE, "bad expiry date `%s'", optarg);
d03ab969 750 }
751 break;
752
753 /* --- Store comments without interpretation --- */
754
755 case 'c':
252c122d 756 if (key_chkcomment(optarg))
757 die(EXIT_FAILURE, "bad comment string `%s'", optarg);
d03ab969 758 c = optarg;
759 break;
760
252c122d 761 /* --- Store tags --- */
762
763 case 't':
764 if (key_chkident(optarg))
765 die(EXIT_FAILURE, "bad tag string `%s'", optarg);
766 tag = optarg;
767 break;
768
769 /* --- Other flags --- */
770
052b36d0 771 case 'r':
772 rtag = optarg;
773 break;
252c122d 774 case 'l':
775 k.f |= f_lock;
776 break;
777 case 'q':
778 k.f |= f_quiet;
779 break;
780
d03ab969 781 /* --- Other things are bogus --- */
782
783 default:
252c122d 784 k.f |= f_bogus;
d03ab969 785 break;
786 }
787 }
788
252c122d 789 /* --- Various sorts of bogosity --- */
d03ab969 790
252c122d 791 if ((k.f & f_bogus) || optind + 1 > argc) {
d03ab969 792 die(EXIT_FAILURE,
252c122d 793 "Usage: add [options] type [attr...]");
d03ab969 794 }
252c122d 795 if (key_chkident(argv[optind]))
796 die(EXIT_FAILURE, "bad key type `%s'", argv[optind]);
797
798 /* --- Set up various bits of the state --- */
799
d03ab969 800 if (exp == KEXP_EXPIRE)
801 exp = time(0) + 14 * 24 * 60 * 60;
802
252c122d 803 /* --- Open the file and create the basic key block --- *
804 *
805 * Keep on generating keyids until one of them doesn't collide.
806 */
d03ab969 807
252c122d 808 doopen(&f, KOPEN_WRITE);
809 k.kf = &f;
810
052b36d0 811 /* --- Key the generator --- */
812
813 keyrand(&f, rtag);
814
252c122d 815 for (;;) {
816 uint32 id = rand_global.ops->word(&rand_global);
817 int err;
818 k.k = key_new(&f, id, argv[optind], exp, &err);
819 if (k.k)
820 break;
821 if (err != KERR_DUPID)
822 die(EXIT_FAILURE, "error adding new key: %s", key_strerror(err));
823 }
d03ab969 824
252c122d 825 /* --- Set various simple attributes --- */
d03ab969 826
252c122d 827 if (tag) {
828 int err = key_settag(&f, k.k, tag);
829 if (err)
830 die(EXIT_FAILURE, "error setting key tag: %s", key_strerror(err));
831 }
d03ab969 832
252c122d 833 if (c) {
834 int err = key_setcomment(&f, k.k, c);
835 if (err)
836 die(EXIT_FAILURE, "error setting key comment: %s", key_strerror(err));
837 }
838
839 setattr(&f, k.k, argv + optind + 1);
840
841 key_fulltag(k.k, &k.tag);
842
843 /* --- Find the parameter key --- */
844
845 if (ptag) {
846 if ((k.p = key_bytag(&f, ptag)) == 0)
847 die(EXIT_FAILURE, "parameter key `%s' not found", ptag);
848 if ((k.p->k.e & KF_ENCMASK) != KENC_STRUCT)
849 die(EXIT_FAILURE, "parameter key `%s' is not structured", ptag);
850 }
851
852 /* --- Now generate the actual key data --- */
853
854 alg->proc(&k);
855
856 /* --- Done --- */
d03ab969 857
d03ab969 858 doclose(&f);
859 return (0);
860}
861
252c122d 862/*----- Key listing -------------------------------------------------------*/
863
864/* --- Listing options --- */
865
866typedef struct listopts {
867 const char *tfmt; /* Date format (@strftime@-style) */
868 int v; /* Verbosity level */
869 unsigned f; /* Various flags */
870 time_t t; /* Time now (for key expiry) */
871 key_filter kf; /* Filter for matching keys */
872} listopts;
873
874/* --- Listing flags --- */
875
876enum {
877 f_newline = 2, /* Write newline before next entry */
878 f_attr = 4, /* Written at least one attribute */
879 f_utc = 8 /* Emit UTC time, not local time */
880};
881
882/* --- @showkeydata@ --- *
883 *
884 * Arguments: @key_data *k@ = pointer to key to write
885 * @int ind@ = indentation level
886 * @listopts *o@ = listing options
887 * @dstr *d@ = tag string for this subkey
888 *
889 * Returns: ---
890 *
891 * Use: Emits a piece of key data in a human-readable format.
892 */
893
894static void showkeydata(key_data *k, int ind, listopts *o, dstr *d)
895{
896#define INDENT(i) do { \
897 int _i; \
898 for (_i = 0; _i < (i); _i++) { \
899 putchar(' '); \
900 } \
901} while (0)
902
903 switch (k->e & KF_ENCMASK) {
904
905 /* --- Binary key data --- *
906 *
907 * Emit as a simple hex dump.
908 */
909
910 case KENC_BINARY: {
911 const octet *p = k->u.k.k;
912 const octet *l = p + k->u.k.sz;
913 size_t sz = 0;
914
915 fputs(" {", stdout);
916 while (p < l) {
917 if (sz % 16 == 0) {
918 putchar('\n');
919 INDENT(ind + 2);
920 } else if (sz % 8 == 0)
921 fputs(" ", stdout);
922 else
923 putc(' ', stdout);
924 printf("%02x", *p++);
925 sz++;
926 }
927 putchar('\n');
928 INDENT(ind);
929 fputs("}\n", stdout);
930 } break;
931
932 /* --- Encrypted data --- *
933 *
934 * If the user is sufficiently keen, ask for a passphrase and decrypt the
935 * key. Otherwise just say that it's encrypted and move on.
936 */
937
938 case KENC_ENCRYPT:
939 if (o->v <= 3)
940 fputs(" encrypted\n", stdout);
941 else {
942 key_data kd;
943 if (key_punlock(d->buf, k, &kd))
944 printf(" <failed to unlock %s>\n", d->buf);
945 else {
946 fputs(" encrypted", stdout);
947 showkeydata(&kd, ind, o, d);
948 key_destroy(&kd);
949 }
950 }
951 break;
952
953 /* --- Integer keys --- *
954 *
955 * Emit as a large integer in decimal. This makes using the key in
956 * `calc' or whatever easier.
957 */
958
959 case KENC_MP:
960 putchar(' ');
961 mp_writefile(k->u.m, stdout, 10);
962 putchar('\n');
963 break;
964
965 /* --- Structured keys --- *
966 *
967 * Just iterate over the subkeys.
968 */
969
970 case KENC_STRUCT: {
971 sym_iter i;
972 key_struct *ks;
973 size_t n = d->len;
974
975 fputs(" {\n", stdout);
976 for (sym_mkiter(&i, &k->u.s); (ks = sym_next(&i)) != 0; ) {
977 if (!key_match(&ks->k, &o->kf))
978 continue;
979 INDENT(ind + 2);
980 printf("%s =", SYM_NAME(ks));
981 d->len = n;
982 dstr_putf(d, ".%s", SYM_NAME(ks));
983 showkeydata(&ks->k, ind + 2, o, d);
984 }
985 INDENT(ind);
986 fputs("}\n", stdout);
987 } break;
988 }
989
990#undef INDENT
991}
992
993/* --- @showkey@ --- *
994 *
995 * Arguments: @key *k@ = pointer to key to show
996 * @listopts *o@ = pointer to listing options
997 *
998 * Returns: ---
999 *
1000 * Use: Emits a listing of a particular key.
1001 */
1002
1003static void showkey(key *k, listopts *o)
1004{
1005 char ebuf[24], dbuf[24];
1006 struct tm *tm;
1007
1008 /* --- Skip the key if the filter doesn't match --- */
1009
1010 if (!key_match(&k->k, &o->kf))
1011 return;
1012
1013 /* --- Sort out the expiry and deletion times --- */
1014
1015 if (KEY_EXPIRED(o->t, k->exp))
1016 strcpy(ebuf, "expired");
1017 else if (k->exp == KEXP_FOREVER)
1018 strcpy(ebuf, "forever");
1019 else {
1020 tm = (o->f & f_utc) ? gmtime(&k->exp) : localtime(&k->exp);
1021 strftime(ebuf, sizeof(ebuf), o->tfmt, tm);
1022 }
1023
1024 if (KEY_EXPIRED(o->t, k->del))
1025 strcpy(dbuf, "deleted");
1026 else if (k->del == KEXP_FOREVER)
1027 strcpy(dbuf, "forever");
1028 else {
1029 tm = (o->f & f_utc) ? gmtime(&k->del) : localtime(&k->del);
1030 strftime(dbuf, sizeof(dbuf), o->tfmt, tm);
1031 }
1032
1033 /* --- If in compact format, just display and quit --- */
1034
1035 if (!o->v) {
1036 if (!(o->f & f_newline)) {
1037 printf("%8s %-20s %-20s %-10s %-10s\n",
1038 "Id", "Tag", "Type", "Expire", "Delete");
1039 }
1040 printf("%08lx %-20s %-20s %-10s %-10s\n",
1041 (unsigned long)k->id, k->tag ? k->tag : "<none>",
1042 k->type, ebuf, dbuf);
1043 o->f |= f_newline;
1044 return;
1045 }
1046
1047 /* --- Display the standard header --- */
1048
1049 if (o->f & f_newline)
1050 fputc('\n', stdout);
1051 printf("keyid: %08lx\n", (unsigned long)k->id);
1052 printf("tag: %s\n", k->tag ? k->tag : "<none>");
1053 printf("type: %s\n", k->type);
1054 printf("expiry: %s\n", ebuf);
1055 printf("delete: %s\n", dbuf);
1056 printf("comment: %s\n", k->c ? k->c : "<none>");
1057
1058 /* --- Display the attributes --- */
1059
1060 if (o->v > 1) {
1061 key_attriter i;
1062 const char *av, *an;
1063
1064 o->f &= ~f_attr;
1065 printf("attributes:");
1066 for (key_mkattriter(&i, k); key_nextattr(&i, &an, &av); ) {
1067 printf("\n\t%s = %s", an, av);
1068 o->f |= f_attr;
1069 }
1070 if (o->f & f_attr)
1071 fputc('\n', stdout);
1072 else
1073 puts(" <none>");
1074 }
1075
1076 /* --- If dumping requested, dump the raw key data --- */
1077
1078 if (o->v > 2) {
1079 dstr d = DSTR_INIT;
1080 fputs("key:", stdout);
1081 key_fulltag(k, &d);
1082 showkeydata(&k->k, 0, o, &d);
1083 dstr_destroy(&d);
1084 }
1085
1086 o->f |= f_newline;
1087}
1088
1089/* --- @cmd_list@ --- */
1090
1091static int cmd_list(int argc, char *argv[])
1092{
1093 key_file f;
1094 key *k;
1095 listopts o = { 0, 0, 0, 0, { 0, 0 } };
1096
1097 /* --- Parse subcommand options --- */
1098
1099 for (;;) {
1100 static struct option opt[] = {
1101 { "quiet", 0, 0, 'q' },
1102 { "verbose", 0, 0, 'v' },
1103 { "utc", 0, 0, 'u' },
1104 { "filter", OPTF_ARGREQ, 0, 'f' },
1105 { 0, 0, 0, 0 }
1106 };
1107 int i = mdwopt(argc, argv, "+uqvf:", opt, 0, 0, 0);
1108 if (i < 0)
1109 break;
1110
1111 switch (i) {
1112 case 'u':
1113 o.f |= f_utc;
1114 break;
1115 case 'q':
1116 if (o.v)
1117 o.v--;
1118 break;
1119 case 'v':
1120 o.v++;
1121 break;
1122 case 'f': {
1123 char *p;
1124 int e = key_readflags(optarg, &p, &o.kf.f, &o.kf.m);
1125 if (e || *p)
1126 die(EXIT_FAILURE, "bad filter string `%s'", optarg);
1127 } break;
1128 default:
1129 o.f |= f_bogus;
1130 break;
1131 }
1132 }
1133
1134 if (o.f & f_bogus)
1135 die(EXIT_FAILURE, "Usage: list [-uqv] [-f filter] [tag...]");
1136
1137 /* --- Open the key file --- */
1138
1139 doopen(&f, KOPEN_READ);
1140 o.t = time(0);
1141
1142 /* --- Set up the time format --- */
1143
1144 if (!o.v)
1145 o.tfmt = "%Y-%m-%d";
1146 else if (o.f & f_utc)
1147 o.tfmt = "%Y-%m-%d %H:%M:%S UTC";
1148 else
1149 o.tfmt = "%Y-%m-%d %H:%M:%S %Z";
1150
1151 /* --- If specific keys were requested use them, otherwise do all --- *
1152 *
1153 * Some day, this might turn into a wildcard match.
1154 */
1155
1156 if (optind < argc) {
1157 do {
1158 if ((k = key_bytag(&f, argv[optind])) != 0)
1159 showkey(k, &o);
1160 else {
1161 moan("key `%s' not found", argv[optind]);
1162 o.f |= f_bogus;
1163 }
1164 optind++;
1165 } while (optind < argc);
1166 } else {
1167 key_iter i;
1168 for (key_mkiter(&i, &f); (k = key_next(&i)) != 0; )
1169 showkey(k, &o);
1170 }
1171
1172 /* --- Done --- */
1173
1174 doclose(&f);
1175 if (o.f & f_bogus)
1176 return (EXIT_FAILURE);
1177 else
1178 return (0);
1179}
1180
1181/*----- Command implementation --------------------------------------------*/
1182
d03ab969 1183/* --- @cmd_expire@ --- */
1184
1185static int cmd_expire(int argc, char *argv[])
1186{
1187 key_file f;
1188 key *k;
d03ab969 1189 int i;
1190 int rc = 0;
1191
1192 if (argc < 2)
252c122d 1193 die(EXIT_FAILURE, "Usage: expire tag...");
d03ab969 1194 doopen(&f, KOPEN_WRITE);
1195 for (i = 1; i < argc; i++) {
252c122d 1196 if ((k = key_bytag(&f, argv[i])) != 0)
d03ab969 1197 key_expire(&f, k);
1198 else {
252c122d 1199 moan("key `%s' not found", argv[i]);
d03ab969 1200 rc = 1;
1201 }
1202 }
1203 doclose(&f);
1204 return (rc);
1205}
1206
1207/* --- @cmd_delete@ --- */
1208
1209static int cmd_delete(int argc, char *argv[])
1210{
1211 key_file f;
1212 key *k;
d03ab969 1213 int i;
1214 int rc = 0;
1215
1216 if (argc < 2)
252c122d 1217 die(EXIT_FAILURE, "Usage: delete tag...");
d03ab969 1218 doopen(&f, KOPEN_WRITE);
1219 for (i = 1; i < argc; i++) {
252c122d 1220 if ((k = key_bytag(&f, argv[i])) != 0)
d03ab969 1221 key_delete(&f, k);
1222 else {
252c122d 1223 moan("key `%s' not found", argv[i]);
d03ab969 1224 rc = 1;
1225 }
1226 }
1227 doclose(&f);
1228 return (rc);
1229}
1230
1231/* --- @cmd_setattr@ --- */
1232
1233static int cmd_setattr(int argc, char *argv[])
1234{
1235 key_file f;
1236 key *k;
d03ab969 1237
1238 if (argc < 3)
252c122d 1239 die(EXIT_FAILURE, "Usage: setattr tag attr...");
d03ab969 1240 doopen(&f, KOPEN_WRITE);
252c122d 1241 if ((k = key_bytag(&f, argv[1])) == 0)
1242 die(EXIT_FAILURE, "key `%s' not found", argv[1]);
d03ab969 1243 setattr(&f, k, argv + 2);
1244 doclose(&f);
1245 return (0);
1246}
1247
252c122d 1248/* --- @cmd_finger@ --- */
d03ab969 1249
252c122d 1250static void fingerprint(key *k, const key_filter *kf)
d03ab969 1251{
252c122d 1252 rmd160_ctx r;
1253 octet hash[RMD160_HASHSZ];
1254 dstr d = DSTR_INIT;
1255 int i;
d03ab969 1256
052b36d0 1257 if (!key_encode(&k->k, &d, kf))
252c122d 1258 return;
1259 rmd160_init(&r);
052b36d0 1260 rmd160_hash(&r, d.buf, d.len);
252c122d 1261 rmd160_done(&r, hash);
052b36d0 1262
1263 DRESET(&d);
252c122d 1264 key_fulltag(k, &d);
1265 for (i = 0; i < sizeof(hash); i++) {
1266 if (i && i % 4 == 0)
1267 putchar('-');
1268 printf("%02x", hash[i]);
1269 }
1270 printf(" %s\n", d.buf);
1271 dstr_destroy(&d);
1272}
d03ab969 1273
252c122d 1274static int cmd_finger(int argc, char *argv[])
1275{
1276 key_file f;
1277 int rc = 0;
1278 key_filter kf = { KF_NONSECRET, KF_NONSECRET };
d03ab969 1279
1280 for (;;) {
1281 static struct option opt[] = {
252c122d 1282 { "filter", OPTF_ARGREQ, 0, 'f' },
1283 { 0, 0, 0, 0 }
d03ab969 1284 };
252c122d 1285 int i = mdwopt(argc, argv, "f:", opt, 0, 0, 0);
d03ab969 1286 if (i < 0)
1287 break;
d03ab969 1288 switch (i) {
252c122d 1289 case 'f': {
1290 char *p;
1291 int err = key_readflags(optarg, &p, &kf.f, &kf.m);
1292 if (err || *p)
1293 die(EXIT_FAILURE, "bad filter string `%s'", optarg);
1294 } break;
d03ab969 1295 default:
252c122d 1296 rc = 1;
d03ab969 1297 break;
1298 }
1299 }
1300
252c122d 1301 argv += optind; argc -= optind;
1302 if (rc)
1303 die(EXIT_FAILURE, "Usage: fingerprint [-f filter] [tag...]");
d03ab969 1304
1305 doopen(&f, KOPEN_READ);
d03ab969 1306
252c122d 1307 if (argc) {
1308 int i;
1309 for (i = 0; i < argc; i++) {
1310 key *k = key_bytag(&f, argv[i]);
1311 if (k)
1312 fingerprint(k, &kf);
1313 else {
1314 rc = 1;
1315 moan("key `%s' not found", argv[i]);
1316 }
1317 }
1318 } else {
1319 key_iter i;
1320 key *k;
1321 for (key_mkiter(&i, &f); (k = key_next(&i)) != 0; )
1322 fingerprint(k, &kf);
1323 }
1324 return (rc);
1325}
d03ab969 1326
252c122d 1327/* --- @cmd_comment@ --- */
d03ab969 1328
252c122d 1329static int cmd_comment(int argc, char *argv[])
1330{
1331 key_file f;
1332 key *k;
1333 int err;
d03ab969 1334
252c122d 1335 if (argc < 2 || argc > 3)
1336 die(EXIT_FAILURE, "Usage: comment tag [comment]");
1337 doopen(&f, KOPEN_WRITE);
1338 if ((k = key_bytag(&f, argv[1])) == 0)
1339 die(EXIT_FAILURE, "key `%s' not found", argv[1]);
1340 if ((err = key_setcomment(&f, k, argv[2])) != 0)
1341 die(EXIT_FAILURE, "bad comment `%s': %s", argv[2], key_strerror(err));
1342 doclose(&f);
1343 return (0);
1344}
d03ab969 1345
252c122d 1346/* --- @cmd_tag@ --- */
d03ab969 1347
252c122d 1348static int cmd_tag(int argc, char *argv[])
1349{
1350 key_file f;
1351 key *k;
1352 int err;
d03ab969 1353
252c122d 1354 if (argc < 2 || argc > 3)
1355 die(EXIT_FAILURE, "Usage: tag tag [new-tag]");
1356 doopen(&f, KOPEN_WRITE);
1357 if ((k = key_bytag(&f, argv[1])) == 0)
1358 die(EXIT_FAILURE, "key `%s' not found", argv[1]);
1359 if ((err = key_settag(&f, k, argv[2])) != 0)
1360 die(EXIT_FAILURE, "bad tag `%s': %s", argv[2], key_strerror(err));
1361 doclose(&f);
1362 return (0);
1363}
d03ab969 1364
252c122d 1365/* --- @cmd_lock@ --- */
d03ab969 1366
252c122d 1367static int cmd_lock(int argc, char *argv[])
1368{
1369 key_file f;
1370 key *k;
1371 key_data *kd;
1372 dstr d = DSTR_INIT;
d03ab969 1373
252c122d 1374 if (argc != 2)
1375 die(EXIT_FAILURE, "Usage: lock qtag");
1376 doopen(&f, KOPEN_WRITE);
1377 if (key_qtag(&f, argv[1], &d, &k, &kd))
1378 die(EXIT_FAILURE, "key `%s' not found", argv[1]);
1379 if (kd->e == KENC_ENCRYPT && key_punlock(d.buf, kd, kd))
1380 die(EXIT_FAILURE, "couldn't unlock key `%s'", d.buf);
1381 if (key_plock(d.buf, kd, kd))
1382 die(EXIT_FAILURE, "failed to lock key `%s'", d.buf);
1383 f.f |= KF_MODIFIED;
1384 doclose(&f);
1385 return (0);
1386}
d03ab969 1387
252c122d 1388/* --- @cmd_unlock@ --- */
d03ab969 1389
252c122d 1390static int cmd_unlock(int argc, char *argv[])
1391{
1392 key_file f;
1393 key *k;
1394 key_data *kd;
1395 dstr d = DSTR_INIT;
d03ab969 1396
252c122d 1397 if (argc != 2)
1398 die(EXIT_FAILURE, "Usage: unlock qtag");
1399 doopen(&f, KOPEN_WRITE);
1400 if (key_qtag(&f, argv[1], &d, &k, &kd))
1401 die(EXIT_FAILURE, "key `%s' not found", argv[1]);
1402 if (kd->e != KENC_ENCRYPT)
1403 die(EXIT_FAILURE, "key `%s' is not encrypted", d.buf);
1404 if (kd->e == KENC_ENCRYPT && key_punlock(d.buf, kd, kd))
1405 die(EXIT_FAILURE, "couldn't unlock key `%s'", d.buf);
1406 f.f |= KF_MODIFIED;
d03ab969 1407 doclose(&f);
1408 return (0);
1409}
1410
1411/* --- @cmd_extract@ --- */
1412
1413static int cmd_extract(int argc, char *argv[])
1414{
1415 key_file f;
1416 key *k;
d03ab969 1417 int i;
1418 int rc = 0;
252c122d 1419 key_filter kf = { 0, 0 };
d03ab969 1420 FILE *fp;
1421
252c122d 1422 for (;;) {
1423 static struct option opt[] = {
1424 { "filter", OPTF_ARGREQ, 0, 'f' },
1425 { 0, 0, 0, 0 }
1426 };
1427 int i = mdwopt(argc, argv, "f:", opt, 0, 0, 0);
1428 if (i < 0)
1429 break;
1430 switch (i) {
1431 case 'f': {
1432 char *p;
1433 int err = key_readflags(optarg, &p, &kf.f, &kf.m);
1434 if (err || *p)
1435 die(EXIT_FAILURE, "bad filter string `%s'", optarg);
1436 } break;
1437 default:
1438 rc = 1;
1439 break;
1440 }
1441 }
1442
1443 argv += optind; argc -= optind;
1444 if (rc || argc < 1)
1445 die(EXIT_FAILURE, "Usage: extract [-f filter] file [tag...]");
1446 if (strcmp(*argv, "-") == 0)
d03ab969 1447 fp = stdout;
252c122d 1448 else if (!(fp = fopen(*argv, "w"))) {
d03ab969 1449 die(EXIT_FAILURE, "couldn't open `%s' for writing: %s",
252c122d 1450 *argv, strerror(errno));
d03ab969 1451 }
1452
252c122d 1453 doopen(&f, KOPEN_READ);
1454 if (argc < 2) {
1455 key_iter i;
1456 key *k;
1457 for (key_mkiter(&i, &f); (k = key_next(&i)) != 0; )
1458 key_extract(&f, k, fp, &kf);
1459 } else {
1460 for (i = 1; i < argc; i++) {
1461 if ((k = key_bytag(&f, argv[i])) != 0)
1462 key_extract(&f, k, fp, &kf);
1463 else {
1464 moan("key `%s' not found", argv[i]);
1465 rc = 1;
1466 }
d03ab969 1467 }
1468 }
252c122d 1469 if (fclose(fp))
1470 die(EXIT_FAILURE, "error writing file: %s", strerror(errno));
d03ab969 1471 doclose(&f);
1472 return (rc);
1473}
1474
1475/* --- @cmd_tidy@ --- */
1476
1477static int cmd_tidy(int argc, char *argv[])
1478{
1479 key_file f;
1480 if (argc != 1)
1481 die(EXIT_FAILURE, "usage: tidy");
1482 doopen(&f, KOPEN_WRITE);
1483 f.f |= KF_MODIFIED; /* Nasty hack */
1484 doclose(&f);
1485 return (0);
1486}
1487
1488/* --- @cmd_merge@ --- */
1489
1490static int cmd_merge(int argc, char *argv[])
1491{
1492 key_file f;
1493 FILE *fp;
1494
1495 if (argc != 2)
252c122d 1496 die(EXIT_FAILURE, "Usage: merge file");
d03ab969 1497 if (strcmp(argv[1], "-") == 0)
1498 fp = stdin;
1499 else if (!(fp = fopen(argv[1], "r"))) {
1500 die(EXIT_FAILURE, "couldn't open `%s' for writing: %s",
1501 argv[1], strerror(errno));
1502 }
1503
1504 doopen(&f, KOPEN_WRITE);
252c122d 1505 key_merge(&f, argv[1], fp, key_moan, 0);
d03ab969 1506 doclose(&f);
1507 return (0);
1508}
1509
1510/*----- Main command table ------------------------------------------------*/
1511
1512static struct cmd {
1513 const char *name;
1514 int (*cmd)(int /*argc*/, char */*argv*/[]);
1515 const char *help;
1516} cmds[] = {
1517 { "add", cmd_add,
252c122d 1518 "add [options] type [attr...]\n\
052b36d0 1519 Options: [-lq] [-a alg] [-b|-B bits] [-p param] [-r tag]\n\
252c122d 1520 [-e expire] [-t tag] [-c comment]"
1521 },
1522 { "expire", cmd_expire, "expire tag..." },
1523 { "delete", cmd_delete, "delete tag..." },
1524 { "tag", cmd_tag, "tag tag [new-tag]" },
1525 { "setattr", cmd_setattr, "setattr tag attr..." },
1526 { "comment", cmd_comment, "comment tag [comment]" },
1527 { "lock", cmd_lock, "lock qtag" },
1528 { "unlock", cmd_unlock, "unlock qtag" },
1529 { "list", cmd_list, "list [-uqv] [-f filter] [tag...]" },
1530 { "fingerprint", cmd_finger, "fingerprint [-f filter] [tag...]" },
d03ab969 1531 { "tidy", cmd_tidy, "tidy" },
052b36d0 1532 { "extract", cmd_extract, "extract [-f filter] file [tag...]" },
252c122d 1533 { "merge", cmd_merge, "merge file" },
d03ab969 1534 { 0, 0, 0 }
1535};
1536
1537typedef struct cmd cmd;
1538
1539/*----- Main code ---------------------------------------------------------*/
1540
1541/* --- Helpful GNUy functions --- */
1542
1543void usage(FILE *fp)
1544{
052b36d0 1545 pquis(fp, "Usage: $ [-k file] [-i tag] [-t type] command [args]\n");
d03ab969 1546}
1547
1548void version(FILE *fp)
1549{
052b36d0 1550 pquis(fp, "$, Catacomb version " VERSION "\n");
d03ab969 1551}
1552
1553void help(FILE *fp)
1554{
1555 cmd *c;
1556 version(fp);
1557 fputc('\n', fp);
1558 usage(fp);
1559 fputs("\n\
1560Performs various simple key management operations. Command line options\n\
1561recognized are:\n\
1562\n\
1563-h, --help Display this help text.\n\
1564-v, --version Display version number.\n\
1565-u, --usage Display short usage summary.\n\
1566\n\
1567-k, --keyring=FILE Read and write keys in FILE.\n\
052b36d0 1568-i, --id=TAG Use key TAG for random number generator.\n\
1569-t, --type=TYPE Use key TYPE for random number generator.\n\
d03ab969 1570\n\
1571The following commands are understood:\n\n",
1572 fp);
1573 for (c = cmds; c->name; c++)
1574 fprintf(fp, "%s\n", c->help);
1575}
1576
1577/* --- @main@ --- *
1578 *
1579 * Arguments: @int argc@ = number of command line arguments
1580 * @char *argv[]@ = array of command line arguments
1581 *
1582 * Returns: Nonzero on failure.
1583 *
1584 * Use: Main program. Performs simple key management functions.
1585 */
1586
1587int main(int argc, char *argv[])
1588{
1589 unsigned f = 0;
1590
1591 enum {
1592 f_bogus = 1
1593 };
1594
1595 /* --- Initialization --- */
1596
1597 ego(argv[0]);
1598 sub_init();
1599
1600 /* --- Parse command line options --- */
1601
1602 for (;;) {
1603 static struct option opt[] = {
1604
1605 /* --- Standard GNUy help options --- */
1606
1607 { "help", 0, 0, 'h' },
1608 { "version", 0, 0, 'v' },
1609 { "usage", 0, 0, 'u' },
1610
1611 /* --- Real live useful options --- */
1612
1613 { "keyring", OPTF_ARGREQ, 0, 'k' },
052b36d0 1614 { "id", OPTF_ARGREQ, 0, 'i' },
1615 { "type", OPTF_ARGREQ, 0, 't' },
d03ab969 1616
1617 /* --- Magic terminator --- */
1618
1619 { 0, 0, 0, 0 }
1620 };
052b36d0 1621 int i = mdwopt(argc, argv, "+hvu k:i:t:", opt, 0, 0, 0);
d03ab969 1622
1623 if (i < 0)
1624 break;
1625 switch (i) {
1626
1627 /* --- GNU help options --- */
1628 case 'h':
1629 help(stdout);
1630 exit(0);
1631 case 'v':
1632 version(stdout);
1633 exit(0);
1634 case 'u':
1635 usage(stdout);
1636 exit(0);
1637
1638 /* --- Real useful options --- */
1639
1640 case 'k':
1641 keyfile = optarg;
1642 break;
1643
1644 /* --- Bogosity --- */
1645
1646 default:
1647 f |= f_bogus;
1648 break;
1649 }
1650 }
1651
1652 /* --- Complain about excessive bogons --- */
1653
1654 if (f & f_bogus || optind == argc) {
1655 usage(stderr);
1656 exit(1);
1657 }
1658
052b36d0 1659 /* --- Initialize the Catacomb random number generator --- */
1660
052b36d0 1661 rand_noisesrc(RAND_GLOBAL, &noise_source);
9219a5d6 1662 rand_seed(RAND_GLOBAL, 160);
052b36d0 1663
d03ab969 1664 /* --- Dispatch to appropriate command handler --- */
1665
1666 argc -= optind;
1667 argv += optind;
1668 optind = 0;
1669
1670 {
1671 cmd *c, *chosen = 0;
1672 size_t sz = strlen(argv[0]);
1673
1674 for (c = cmds; c->name; c++) {
1675 if (strncmp(argv[0], c->name, sz) == 0) {
1676 if (c->name[sz] == 0) {
1677 chosen = c;
1678 break;
1679 } else if (chosen)
1680 die(EXIT_FAILURE, "ambiguous command name `%s'", argv[0]);
1681 else
1682 chosen = c;
1683 }
1684 }
1685 if (!chosen)
1686 die(EXIT_FAILURE, "unknown command name `%s'", argv[0]);
1687 return (chosen->cmd(argc, argv));
1688 }
1689}
1690
1691/*----- That's all, folks -------------------------------------------------*/
Catacomb cryptographic library (downstream of http://git.distorted.org.uk/~mdw/catacomb/)