| 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 -------------------------------------------------*/ |