d03ab969 |
1 | /* -*-c-*- |
2 | * |
3 | * $Id: keyutil.c,v 1.1 1999/09/03 08:41:12 mdw Exp $ |
4 | * |
5 | * Simple key manager program |
6 | * |
7 | * (c) 1999 Mark Wooding |
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 1.1 1999/09/03 08:41:12 mdw |
34 | * Initial import. |
35 | * |
36 | */ |
37 | |
38 | /*----- Header files ------------------------------------------------------*/ |
39 | |
40 | #include "config.h" |
41 | |
42 | #include <errno.h> |
43 | #include <stdio.h> |
44 | #include <stdlib.h> |
45 | #include <string.h> |
46 | #include <time.h> |
47 | |
48 | #include <mLib/mdwopt.h> |
49 | #include <mLib/quis.h> |
50 | #include <mLib/report.h> |
51 | #include <mLib/sub.h> |
52 | |
53 | #include <noise.h> |
54 | #include <rand.h> |
55 | |
56 | #include "getdate.h" |
57 | #include "key.h" |
58 | |
59 | /*----- Handy global state ------------------------------------------------*/ |
60 | |
61 | static const char *keyfile = "keyring"; |
62 | |
63 | /*----- Useful shared functions -------------------------------------------*/ |
64 | |
65 | /* --- @doopen@ --- * |
66 | * |
67 | * Arguments: @key_file *f@ = pointer to key file block |
68 | * @unsigned how@ = method to open file with |
69 | * |
70 | * Returns: --- |
71 | * |
72 | * Use: Opens a key file and handles errors by panicking |
73 | * appropriately. |
74 | */ |
75 | |
76 | static void doopen(key_file *f, unsigned how) |
77 | { |
78 | if (key_open(f, keyfile, how)) |
79 | die(1, "couldn't open file `%s': %s", keyfile, strerror(errno)); |
80 | } |
81 | |
82 | /* --- @doclose@ --- * |
83 | * |
84 | * Arguments: @key_file *f@ = pointer to key file block |
85 | * |
86 | * Returns: --- |
87 | * |
88 | * Use: Closes a key file and handles errors by panicking |
89 | * appropriately. |
90 | */ |
91 | |
92 | static void doclose(key_file *f) |
93 | { |
94 | switch (key_close(f)) { |
95 | case KWRITE_FAIL: |
96 | die(EXIT_FAILURE, "couldn't write file `%s': %s", |
97 | keyfile, strerror(errno)); |
98 | case KWRITE_BROKEN: |
99 | die(EXIT_FAILURE, "keyring file `%s' broken: %s (repair manually)", |
100 | keyfile, strerror(errno)); |
101 | } |
102 | } |
103 | |
104 | /* --- @setattr@ --- * |
105 | * |
106 | * Arguments: @key_file *f@ = pointer to key file block |
107 | * @key *k@ = pointer to key block |
108 | * @char *v[]@ = array of assignments (overwritten!) |
109 | * |
110 | * Returns: --- |
111 | * |
112 | * Use: Applies the attribute assignments to the key. |
113 | */ |
114 | |
115 | static void setattr(key_file *f, key *k, char *v[]) |
116 | { |
117 | while (*v) { |
118 | char *p = *v; |
119 | size_t eq = strcspn(p, "="); |
120 | if (p[eq] == 0) |
121 | moan("invalid assignment: `%s'", p); |
122 | p[eq] = 0; |
123 | p += eq + 1; |
124 | key_putattr(f, k, *v, *p ? p : 0); |
125 | v++; |
126 | } |
127 | } |
128 | |
129 | /*----- Command implementation --------------------------------------------*/ |
130 | |
131 | /* --- @cmd_add@ --- */ |
132 | |
133 | static int cmd_add(int argc, char *argv[]) |
134 | { |
135 | key_file f; |
136 | key *k; |
137 | int bits = 128; |
138 | time_t exp = KEXP_EXPIRE; |
139 | unsigned fl = 0; |
140 | unsigned char *p; |
141 | size_t sz; |
142 | const char *c = 0; |
143 | |
144 | /* --- Various useful flag bits --- */ |
145 | |
146 | enum { |
147 | f_bogus = 1 |
148 | }; |
149 | |
150 | /* --- Parse options for the subcommand --- */ |
151 | |
152 | for (;;) { |
153 | static struct option opt[] = { |
154 | { "bits", OPTF_ARGREQ, 0, 'b' }, |
155 | { "expire", OPTF_ARGREQ, 0, 'e' }, |
156 | { "comment", OPTF_ARGREQ, 0, 'c' }, |
157 | { 0, 0, 0, 0 } |
158 | }; |
159 | int i = mdwopt(argc, argv, "+b:e:c:", opt, 0, 0, 0); |
160 | if (i < 0) |
161 | break; |
162 | |
163 | /* --- Handle the various options --- */ |
164 | |
165 | switch (i) { |
166 | |
167 | /* --- Bits must be nonzero and a multiple of 8 --- */ |
168 | |
169 | case 'b': |
170 | if (!(bits = atoi(optarg)) || bits % 8) |
171 | die(EXIT_FAILURE, "bad number of bits: `%s'", optarg); |
172 | break; |
173 | |
174 | /* --- Expiry dates get passed to @get_date@ for parsing --- */ |
175 | |
176 | case 'e': |
177 | if (strcmp(optarg, "forever") == 0) |
178 | exp = KEXP_FOREVER; |
179 | else { |
180 | exp = get_date(optarg, 0); |
181 | if (exp == -1) |
182 | die(EXIT_FAILURE, "bad expiry date: `%s'", optarg); |
183 | } |
184 | break; |
185 | |
186 | /* --- Store comments without interpretation --- */ |
187 | |
188 | case 'c': |
189 | if (key_chkcomment(c)) |
190 | die(EXIT_FAILURE, "bad comment string: `%s'", optarg); |
191 | c = optarg; |
192 | break; |
193 | |
194 | /* --- Other things are bogus --- */ |
195 | |
196 | default: |
197 | fl |= f_bogus; |
198 | break; |
199 | } |
200 | } |
201 | |
202 | /* --- Various sorts of bogusity --- */ |
203 | |
204 | if (fl & f_bogus || optind + 1 > argc) { |
205 | die(EXIT_FAILURE, |
206 | "Usage: add [-b BITS] [-e EXPIRE] [-c COMMENT] TYPE [ATTR...]"); |
207 | } |
208 | if (key_chktype(argv[optind])) |
209 | die(EXIT_FAILURE, "bad key type: `%s'", argv[optind]); |
210 | if (exp == KEXP_EXPIRE) |
211 | exp = time(0) + 14 * 24 * 60 * 60; |
212 | |
213 | /* --- Initialize the Catacomb random number generator --- */ |
214 | |
215 | rand_init(RAND_GLOBAL); |
216 | rand_noisesrc(RAND_GLOBAL, &noise_source); |
217 | |
218 | /* --- Extract the key data from the generator --- */ |
219 | |
220 | sz = bits / 8; |
221 | p = xmalloc(sz); |
222 | rand_getgood(RAND_GLOBAL, p, sz); |
223 | |
224 | /* --- Open the file, add the key, set attributes, close, return --- */ |
225 | |
226 | doopen(&f, KOPEN_WRITE); |
227 | if (!(k = key_new(&f, argv[optind], p, sz, exp, c))) |
228 | moan("key not added: expiry date in past?"); |
229 | setattr(&f, k, argv + optind + 1); |
230 | doclose(&f); |
231 | return (0); |
232 | } |
233 | |
234 | /* --- @cmd_expire@ --- */ |
235 | |
236 | static int cmd_expire(int argc, char *argv[]) |
237 | { |
238 | key_file f; |
239 | key *k; |
240 | uint32 id; |
241 | int i; |
242 | int rc = 0; |
243 | |
244 | if (argc < 2) |
245 | die(EXIT_FAILURE, "Usage: expire KEYID..."); |
246 | doopen(&f, KOPEN_WRITE); |
247 | for (i = 1; i < argc; i++) { |
248 | id = (uint32)strtoul(argv[i], 0, 16); |
249 | if ((k = key_byid(&f, id)) != 0) |
250 | key_expire(&f, k); |
251 | else { |
252 | moan("keyid %lx not found", (unsigned long)id); |
253 | rc = 1; |
254 | } |
255 | } |
256 | doclose(&f); |
257 | return (rc); |
258 | } |
259 | |
260 | /* --- @cmd_delete@ --- */ |
261 | |
262 | static int cmd_delete(int argc, char *argv[]) |
263 | { |
264 | key_file f; |
265 | key *k; |
266 | uint32 id; |
267 | int i; |
268 | int rc = 0; |
269 | |
270 | if (argc < 2) |
271 | die(EXIT_FAILURE, "Usage: delete KEYID..."); |
272 | doopen(&f, KOPEN_WRITE); |
273 | for (i = 1; i < argc; i++) { |
274 | id = (uint32)strtoul(argv[i], 0, 16); |
275 | if ((k = key_byid(&f, id)) != 0) |
276 | key_delete(&f, k); |
277 | else { |
278 | moan("keyid %lx not found", (unsigned long)id); |
279 | rc = 1; |
280 | } |
281 | } |
282 | doclose(&f); |
283 | return (rc); |
284 | } |
285 | |
286 | /* --- @cmd_setattr@ --- */ |
287 | |
288 | static int cmd_setattr(int argc, char *argv[]) |
289 | { |
290 | key_file f; |
291 | key *k; |
292 | uint32 id; |
293 | |
294 | if (argc < 3) |
295 | die(EXIT_FAILURE, "Usage: setattr KEYID ATTR..."); |
296 | doopen(&f, KOPEN_WRITE); |
297 | id = (uint32)strtoul(argv[1], 0, 16); |
298 | if ((k = key_byid(&f, id)) == 0) |
299 | die(EXIT_FAILURE, "keyid %lx not found", (unsigned long)id); |
300 | setattr(&f, k, argv + 2); |
301 | doclose(&f); |
302 | return (0); |
303 | } |
304 | |
305 | /* --- @cmd_comment@ --- */ |
306 | |
307 | static int cmd_comment(int argc, char *argv[]) |
308 | { |
309 | uint32 id; |
310 | key_file f; |
311 | key *k; |
312 | |
313 | if (argc < 2 || argc > 3) |
314 | die(EXIT_FAILURE, "Usage: comment KEYID [COMMENT]"); |
315 | doopen(&f, KOPEN_WRITE); |
316 | id = (uint32)strtoul(argv[1], 0, 16); |
317 | if ((k = key_byid(&f, id)) == 0) |
318 | die(EXIT_FAILURE, "keyid %lx not found", (unsigned long)id); |
319 | if (key_chkcomment(argv[2])) |
320 | die(EXIT_FAILURE, "bad comment: `%s'", argv[2]); |
321 | key_setcomment(&f, k, argv[2]); |
322 | doclose(&f); |
323 | return (0); |
324 | } |
325 | |
326 | /* --- @cmd_list@ --- */ |
327 | |
328 | static int cmd_list(int argc, char *argv[]) |
329 | { |
330 | key_file f; |
331 | key *k; |
332 | key_iter i; |
333 | unsigned fl = 0; |
334 | const char *tfmt; |
335 | int v = 0; |
336 | time_t t; |
337 | |
338 | enum { |
339 | f_bogus = 1, |
340 | f_newline = 2, |
341 | f_attr = 4 |
342 | }; |
343 | |
344 | /* --- Parse subcommand options --- */ |
345 | |
346 | for (;;) { |
347 | static struct option opt[] = { |
348 | { "quiet", 0, 0, 'q' }, |
349 | { "verbose", 0, 0, 'v' }, |
350 | { 0, 0, 0, 0 } |
351 | }; |
352 | int i = mdwopt(argc, argv, "qv", opt, 0, 0, 0); |
353 | if (i < 0) |
354 | break; |
355 | |
356 | switch (i) { |
357 | case 'q': |
358 | if (v) |
359 | v--; |
360 | break; |
361 | case 'v': |
362 | v++; |
363 | break; |
364 | default: |
365 | fl |= f_bogus; |
366 | break; |
367 | } |
368 | } |
369 | |
370 | if (fl & f_bogus || optind != argc) |
371 | die(EXIT_FAILURE, "Usage: list [-qv]"); |
372 | |
373 | /* --- Open the key file --- */ |
374 | |
375 | doopen(&f, KOPEN_READ); |
376 | t = time(0); |
377 | |
378 | /* --- Write the header --- */ |
379 | |
380 | tfmt = v ? "%Y-%m-%d %H:%M:%S" : "%Y-%m-%d"; |
381 | |
382 | /* --- Now iterate through the keys --- */ |
383 | |
384 | for (key_mkiter(&i, &f); (k = key_next(&i)) != 0; ) { |
385 | char ebuf[24], dbuf[24]; |
386 | struct tm *tm; |
387 | |
388 | /* --- Sort out the expiry times --- */ |
389 | |
390 | if (KEY_EXPIRED(t, k->exp)) { |
391 | strcpy(ebuf, "expired"); |
392 | if (KEY_DELETED(t, k->del)) { |
393 | strcpy(dbuf, "deleted"); |
394 | goto donetime; |
395 | } else |
396 | goto deltime; |
397 | } |
398 | |
399 | if (k->exp == KEXP_FOREVER) |
400 | strcpy(ebuf, "forever"); |
401 | else { |
402 | tm = localtime(&k->exp); |
403 | strftime(ebuf, sizeof(ebuf), tfmt, tm); |
404 | } |
405 | |
406 | /* --- Sort out the delete times --- */ |
407 | |
408 | deltime: |
409 | if (k->del == KEXP_UNUSED) |
410 | strcpy(dbuf, "on expiry"); |
411 | else if (k->del == KEXP_FOREVER) |
412 | strcpy(dbuf, "forever"); |
413 | else { |
414 | tm = localtime(&k->del); |
415 | strftime(dbuf, sizeof(dbuf), tfmt, tm); |
416 | } |
417 | |
418 | donetime:; |
419 | |
420 | /* --- Display the data obtained so far --- */ |
421 | |
422 | if (!v) { |
423 | if (!(fl & f_newline)) { |
424 | printf("%8s %-20s %-10s %-10s %-23s\n", |
425 | "Id", "Type", "Expire", "Delete", "Comment"); |
426 | } |
427 | printf("%08lx %-20s %-10s %-10s %-23s\n", |
428 | (unsigned long)k->id, k->type, ebuf, dbuf, |
429 | k->c ? k->c : "<none>"); |
430 | fl |= f_newline; |
431 | } else { |
432 | |
433 | /* --- Display the standard header --- */ |
434 | |
435 | if (fl & f_newline) |
436 | fputc('\n', stdout); |
437 | printf("keyid: %08lx\n", (unsigned long)k->id); |
438 | printf("type: %s\n", k->type); |
439 | printf("expiry: %s\n", ebuf); |
440 | printf("delete: %s\n", dbuf); |
441 | printf("comment: %s\n", k->c ? k->c : "<none>"); |
442 | |
443 | /* --- Display the attributes --- */ |
444 | |
445 | if (v > 1) { |
446 | key_attriter i; |
447 | const char *av, *an; |
448 | |
449 | fl &= ~f_attr; |
450 | printf("attributes:"); |
451 | for (key_mkattriter(&i, &f, k); key_nextattr(&i, &an, &av); ) { |
452 | printf("\n\t%s = %s", an, av); |
453 | fl |= f_attr; |
454 | } |
455 | if (fl & f_attr) |
456 | fputc('\n', stdout); |
457 | else |
458 | puts(" <none>"); |
459 | } |
460 | |
461 | /* --- If dumping requested, dump the raw key data in hex --- */ |
462 | |
463 | if (v > 2) { |
464 | unsigned char *p = k->k; |
465 | unsigned char *l = p + k->ksz; |
466 | size_t sz = 0; |
467 | |
468 | fputs("key:", stdout); |
469 | while (p < l) { |
470 | if (sz % 16 == 0) |
471 | fputs("\n\t", stdout); |
472 | else if (sz % 8 == 0) |
473 | fputs(" ", stdout); |
474 | else |
475 | fputc(' ', stdout); |
476 | printf("%02x", *p++); |
477 | sz++; |
478 | } |
479 | fputc('\n', stdout); |
480 | } |
481 | } |
482 | } |
483 | |
484 | doclose(&f); |
485 | return (0); |
486 | } |
487 | |
488 | /* --- @cmd_extract@ --- */ |
489 | |
490 | static int cmd_extract(int argc, char *argv[]) |
491 | { |
492 | key_file f; |
493 | key *k; |
494 | uint32 id; |
495 | int i; |
496 | int rc = 0; |
497 | FILE *fp; |
498 | |
499 | if (argc < 3) |
500 | die(EXIT_FAILURE, "Usage: extract FILE KEYID..."); |
501 | if (strcmp(argv[1], "-") == 0) |
502 | fp = stdout; |
503 | else if (!(fp = fopen(argv[1], "w"))) { |
504 | die(EXIT_FAILURE, "couldn't open `%s' for writing: %s", |
505 | argv[1], strerror(errno)); |
506 | } |
507 | |
508 | doopen(&f, KOPEN_WRITE); |
509 | for (i = 2; i < argc; i++) { |
510 | id = (uint32)strtoul(argv[i], 0, 16); |
511 | if ((k = key_byid(&f, id)) != 0) |
512 | key_extract(&f, k, fp); |
513 | else { |
514 | moan("keyid %lx not found", (unsigned long)id); |
515 | rc = 1; |
516 | } |
517 | } |
518 | doclose(&f); |
519 | return (rc); |
520 | } |
521 | |
522 | /* --- @cmd_tidy@ --- */ |
523 | |
524 | static int cmd_tidy(int argc, char *argv[]) |
525 | { |
526 | key_file f; |
527 | if (argc != 1) |
528 | die(EXIT_FAILURE, "usage: tidy"); |
529 | doopen(&f, KOPEN_WRITE); |
530 | f.f |= KF_MODIFIED; /* Nasty hack */ |
531 | doclose(&f); |
532 | return (0); |
533 | } |
534 | |
535 | /* --- @cmd_merge@ --- */ |
536 | |
537 | static int cmd_merge(int argc, char *argv[]) |
538 | { |
539 | key_file f; |
540 | FILE *fp; |
541 | |
542 | if (argc != 2) |
543 | die(EXIT_FAILURE, "Usage: merge FILE"); |
544 | if (strcmp(argv[1], "-") == 0) |
545 | fp = stdin; |
546 | else if (!(fp = fopen(argv[1], "r"))) { |
547 | die(EXIT_FAILURE, "couldn't open `%s' for writing: %s", |
548 | argv[1], strerror(errno)); |
549 | } |
550 | |
551 | doopen(&f, KOPEN_WRITE); |
552 | key_merge(&f, argv[1], fp); |
553 | doclose(&f); |
554 | return (0); |
555 | } |
556 | |
557 | /*----- Main command table ------------------------------------------------*/ |
558 | |
559 | static struct cmd { |
560 | const char *name; |
561 | int (*cmd)(int /*argc*/, char */*argv*/[]); |
562 | const char *help; |
563 | } cmds[] = { |
564 | { "add", cmd_add, |
565 | "add [-b BITS] [-e EXPIRE] [-c COMMENT] TYPE [ATTR...]" }, |
566 | { "expire", cmd_expire, "expire KEYID..." }, |
567 | { "delete", cmd_delete, "delete KEYID..." }, |
568 | { "setattr", cmd_setattr, "setattr KEYID ATTR..." }, |
569 | { "comment", cmd_comment, "comment KEYID [COMMENT]" }, |
570 | { "list", cmd_list, "list [-qv]" }, |
571 | { "tidy", cmd_tidy, "tidy" }, |
572 | { "extract", cmd_extract, "extract FILE KEYID..." }, |
573 | { "merge", cmd_merge, "merge FILE" }, |
574 | { 0, 0, 0 } |
575 | }; |
576 | |
577 | typedef struct cmd cmd; |
578 | |
579 | /*----- Main code ---------------------------------------------------------*/ |
580 | |
581 | /* --- Helpful GNUy functions --- */ |
582 | |
583 | void usage(FILE *fp) |
584 | { |
585 | fprintf(fp, "Usage: %s [-k file] command [args]\n", QUIS); |
586 | } |
587 | |
588 | void version(FILE *fp) |
589 | { |
590 | fprintf(fp, "%s, Catacomb version " VERSION "\n", QUIS); |
591 | } |
592 | |
593 | void help(FILE *fp) |
594 | { |
595 | cmd *c; |
596 | version(fp); |
597 | fputc('\n', fp); |
598 | usage(fp); |
599 | fputs("\n\ |
600 | Performs various simple key management operations. Command line options\n\ |
601 | recognized are:\n\ |
602 | \n\ |
603 | -h, --help Display this help text.\n\ |
604 | -v, --version Display version number.\n\ |
605 | -u, --usage Display short usage summary.\n\ |
606 | \n\ |
607 | -k, --keyring=FILE Read and write keys in FILE.\n\ |
608 | \n\ |
609 | The following commands are understood:\n\n", |
610 | fp); |
611 | for (c = cmds; c->name; c++) |
612 | fprintf(fp, "%s\n", c->help); |
613 | } |
614 | |
615 | /* --- @main@ --- * |
616 | * |
617 | * Arguments: @int argc@ = number of command line arguments |
618 | * @char *argv[]@ = array of command line arguments |
619 | * |
620 | * Returns: Nonzero on failure. |
621 | * |
622 | * Use: Main program. Performs simple key management functions. |
623 | */ |
624 | |
625 | int main(int argc, char *argv[]) |
626 | { |
627 | unsigned f = 0; |
628 | |
629 | enum { |
630 | f_bogus = 1 |
631 | }; |
632 | |
633 | /* --- Initialization --- */ |
634 | |
635 | ego(argv[0]); |
636 | sub_init(); |
637 | |
638 | /* --- Parse command line options --- */ |
639 | |
640 | for (;;) { |
641 | static struct option opt[] = { |
642 | |
643 | /* --- Standard GNUy help options --- */ |
644 | |
645 | { "help", 0, 0, 'h' }, |
646 | { "version", 0, 0, 'v' }, |
647 | { "usage", 0, 0, 'u' }, |
648 | |
649 | /* --- Real live useful options --- */ |
650 | |
651 | { "keyring", OPTF_ARGREQ, 0, 'k' }, |
652 | |
653 | /* --- Magic terminator --- */ |
654 | |
655 | { 0, 0, 0, 0 } |
656 | }; |
657 | int i = mdwopt(argc, argv, "+hvu k:", opt, 0, 0, 0); |
658 | |
659 | if (i < 0) |
660 | break; |
661 | switch (i) { |
662 | |
663 | /* --- GNU help options --- */ |
664 | case 'h': |
665 | help(stdout); |
666 | exit(0); |
667 | case 'v': |
668 | version(stdout); |
669 | exit(0); |
670 | case 'u': |
671 | usage(stdout); |
672 | exit(0); |
673 | |
674 | /* --- Real useful options --- */ |
675 | |
676 | case 'k': |
677 | keyfile = optarg; |
678 | break; |
679 | |
680 | /* --- Bogosity --- */ |
681 | |
682 | default: |
683 | f |= f_bogus; |
684 | break; |
685 | } |
686 | } |
687 | |
688 | /* --- Complain about excessive bogons --- */ |
689 | |
690 | if (f & f_bogus || optind == argc) { |
691 | usage(stderr); |
692 | exit(1); |
693 | } |
694 | |
695 | /* --- Dispatch to appropriate command handler --- */ |
696 | |
697 | argc -= optind; |
698 | argv += optind; |
699 | optind = 0; |
700 | |
701 | { |
702 | cmd *c, *chosen = 0; |
703 | size_t sz = strlen(argv[0]); |
704 | |
705 | for (c = cmds; c->name; c++) { |
706 | if (strncmp(argv[0], c->name, sz) == 0) { |
707 | if (c->name[sz] == 0) { |
708 | chosen = c; |
709 | break; |
710 | } else if (chosen) |
711 | die(EXIT_FAILURE, "ambiguous command name `%s'", argv[0]); |
712 | else |
713 | chosen = c; |
714 | } |
715 | } |
716 | if (!chosen) |
717 | die(EXIT_FAILURE, "unknown command name `%s'", argv[0]); |
718 | return (chosen->cmd(argc, argv)); |
719 | } |
720 | } |
721 | |
722 | /*----- That's all, folks -------------------------------------------------*/ |