cksum.c revision 1.35
1 /* $NetBSD: cksum.c,v 1.35 2006/04/24 21:07:43 hubertf Exp $ */ 2 3 /*- 4 * Copyright (c) 1991, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * This code is derived from software contributed to Berkeley by 8 * James W. Williams of NASA Goddard Space Flight Center. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. Neither the name of the University nor the names of its contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35 /*- 36 * Copyright (c) 1997 Jason R. Thorpe. All rights reserved. 37 * 38 * This code is derived from software contributed to Berkeley by 39 * James W. Williams of NASA Goddard Space Flight Center. 40 * 41 * Redistribution and use in source and binary forms, with or without 42 * modification, are permitted provided that the following conditions 43 * are met: 44 * 1. Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * 2. Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in the 48 * documentation and/or other materials provided with the distribution. 49 * 3. All advertising materials mentioning features or use of this software 50 * must display the following acknowledgement: 51 * This product includes software developed by the University of 52 * California, Berkeley and its contributors. 53 * 4. Neither the name of the University nor the names of its contributors 54 * may be used to endorse or promote products derived from this software 55 * without specific prior written permission. 56 * 57 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 58 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 59 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 60 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 61 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 62 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 63 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 64 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 65 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 66 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 67 * SUCH DAMAGE. 68 */ 69 70 #if HAVE_NBTOOL_CONFIG_H 71 #include "nbtool_config.h" 72 #endif 73 74 #include <sys/cdefs.h> 75 #if defined(__COPYRIGHT) && !defined(lint) 76 __COPYRIGHT("@(#) Copyright (c) 1991, 1993\n\ 77 The Regents of the University of California. All rights reserved.\n"); 78 #endif /* not lint */ 79 80 #if defined(__RCSID) && !defined(lint) 81 #if 0 82 static char sccsid[] = "@(#)cksum.c 8.2 (Berkeley) 4/28/95"; 83 #endif 84 __RCSID("$NetBSD: cksum.c,v 1.35 2006/04/24 21:07:43 hubertf Exp $"); 85 #endif /* not lint */ 86 87 #include <sys/cdefs.h> 88 #include <sys/types.h> 89 90 #include <err.h> 91 #include <errno.h> 92 #include <fcntl.h> 93 #include <locale.h> 94 #include <md5.h> 95 #include <md4.h> 96 #include <md2.h> 97 #include <sha1.h> 98 #include <crypto/sha2.h> 99 #include <crypto/rmd160.h> 100 #include <stdio.h> 101 #include <stdlib.h> 102 #include <string.h> 103 #include <unistd.h> 104 105 #include "extern.h" 106 107 #define HASH_MD2 0 108 #define HASH_MD4 1 109 #define HASH_MD5 2 110 #define HASH_SHA1 3 111 #define HASH_RMD160 4 112 113 typedef char *(*_filefunc)(const char *, char *); 114 115 struct hash { 116 const char *progname; 117 const char *hashname; 118 void (*stringfunc)(const char *); 119 void (*timetrialfunc)(void); 120 void (*testsuitefunc)(void); 121 void (*filterfunc)(int); 122 char *(*filefunc)(const char *, char *); 123 } hashes[] = { 124 { "md2", "MD2", 125 MD2String, MD2TimeTrial, MD2TestSuite, 126 MD2Filter, MD2File }, 127 { "md4", "MD4", 128 MD4String, MD4TimeTrial, MD4TestSuite, 129 MD4Filter, MD4File }, 130 { "md5", "MD5", 131 MD5String, MD5TimeTrial, MD5TestSuite, 132 MD5Filter, MD5File }, 133 { "sha1", "SHA1", 134 SHA1String, SHA1TimeTrial, SHA1TestSuite, 135 SHA1Filter, (_filefunc) SHA1File }, 136 { "rmd160", "RMD160", 137 RMD160String, RMD160TimeTrial, RMD160TestSuite, 138 RMD160Filter, (_filefunc) RMD160File }, 139 { "sha256", "SHA256", 140 SHA256_String, SHA256_TimeTrial, SHA256_TestSuite, 141 SHA256_Filter, (_filefunc) SHA256_File }, 142 { "sha384", "SHA384", 143 SHA384_String, SHA384_TimeTrial, SHA384_TestSuite, 144 SHA384_Filter, (_filefunc) SHA384_File }, 145 { "sha512", "SHA512", 146 SHA512_String, SHA512_TimeTrial, SHA512_TestSuite, 147 SHA512_Filter, (_filefunc) SHA512_File }, 148 { NULL } 149 }; 150 151 int hash_digest_file(char *, struct hash *, int); 152 void requirehash(const char *); 153 void usage(void); 154 155 int 156 main(int argc, char **argv) 157 { 158 int ch, fd, rval, dosum, pflag, nohashstdin; 159 u_int32_t val; 160 off_t len; 161 char *fn; 162 const char *progname; 163 int (*cfncn) (int, u_int32_t *, off_t *); 164 void (*pfncn) (char *, u_int32_t, off_t); 165 struct hash *hash; 166 int normal, i, check_warn, do_check; 167 168 cfncn = NULL; 169 pfncn = NULL; 170 dosum = pflag = nohashstdin = 0; 171 normal = 0; 172 check_warn = 0; 173 do_check = 0; 174 175 setlocale(LC_ALL, ""); 176 177 progname = getprogname(); 178 179 for (hash = hashes; hash->hashname != NULL; hash++) 180 if (strcmp(progname, hash->progname) == 0) 181 break; 182 183 if (hash->hashname == NULL) { 184 hash = NULL; 185 186 if (!strcmp(progname, "sum")) { 187 dosum = 1; 188 cfncn = csum1; 189 pfncn = psum1; 190 } else { 191 cfncn = crc; 192 pfncn = pcrc; 193 } 194 } 195 196 /* 197 * The -1, -2, -4, -5, -6, and -m flags should be deprecated, but 198 * are still supported in code to not break anything that might 199 * be using them. 200 */ 201 while ((ch = getopt(argc, argv, "a:cmno:ps:twx12456")) != -1) 202 switch(ch) { 203 case 'a': 204 if (hash != NULL || dosum) { 205 warnx("illegal use of -a option\n"); 206 usage(); 207 } 208 i = 0; 209 while (hashes[i].hashname != NULL) { 210 if (!strcasecmp(hashes[i].hashname, optarg)) { 211 hash = &hashes[i]; 212 break; 213 } 214 i++; 215 } 216 if (hash == NULL) { 217 if (!strcasecmp(optarg, "old1")) { 218 cfncn = csum1; 219 pfncn = psum1; 220 } else if (!strcasecmp(optarg, "old2")) { 221 cfncn = csum2; 222 pfncn = psum2; 223 } else if (!strcasecmp(optarg, "crc")) { 224 cfncn = crc; 225 pfncn = pcrc; 226 } else { 227 warnx("illegal argument to -a option"); 228 usage(); 229 } 230 } 231 break; 232 case '2': 233 if (dosum) { 234 warnx("sum mutually exclusive with md2"); 235 usage(); 236 } 237 hash = &hashes[HASH_MD2]; 238 break; 239 case '4': 240 if (dosum) { 241 warnx("sum mutually exclusive with md4"); 242 usage(); 243 } 244 hash = &hashes[HASH_MD4]; 245 break; 246 case 'm': 247 case '5': 248 if (dosum) { 249 warnx("sum mutually exclusive with md5"); 250 usage(); 251 } 252 hash = &hashes[HASH_MD5]; 253 break; 254 case '1': 255 if (dosum) { 256 warnx("sum mutually exclusive with sha1"); 257 usage(); 258 } 259 hash = &hashes[HASH_SHA1]; 260 break; 261 case '6': 262 if (dosum) { 263 warnx("sum mutually exclusive with rmd160"); 264 usage(); 265 } 266 hash = &hashes[HASH_RMD160]; 267 break; 268 case 'c': 269 do_check = 1; 270 break; 271 case 'n': 272 normal = 1; 273 break; 274 case 'o': 275 if (hash) { 276 warnx("%s mutually exclusive with sum", 277 hash->hashname); 278 usage(); 279 } 280 if (!strcmp(optarg, "1")) { 281 cfncn = csum1; 282 pfncn = psum1; 283 } else if (!strcmp(optarg, "2")) { 284 cfncn = csum2; 285 pfncn = psum2; 286 } else { 287 warnx("illegal argument to -o option"); 288 usage(); 289 } 290 break; 291 case 'p': 292 if (hash == NULL) 293 requirehash("-p"); 294 pflag = 1; 295 break; 296 case 's': 297 if (hash == NULL) 298 requirehash("-s"); 299 nohashstdin = 1; 300 hash->stringfunc(optarg); 301 break; 302 case 't': 303 if (hash == NULL) 304 requirehash("-t"); 305 nohashstdin = 1; 306 hash->timetrialfunc(); 307 break; 308 case 'w': 309 check_warn = 1; 310 break; 311 case 'x': 312 if (hash == NULL) 313 requirehash("-x"); 314 nohashstdin = 1; 315 hash->testsuitefunc(); 316 break; 317 case '?': 318 default: 319 usage(); 320 } 321 argc -= optind; 322 argv += optind; 323 324 if (do_check) { 325 /* 326 * Verify checksums 327 */ 328 FILE *f; 329 char buf[BUFSIZ]; 330 char *s, *p_filename, *p_cksum; 331 int l_filename, l_cksum; 332 char filename[BUFSIZ]; 333 char cksum[BUFSIZ]; 334 int ok,cnt,badcnt; 335 336 rval = 0; 337 cnt = badcnt = 0; 338 339 if (argc == 0) { 340 f = fdopen(STDIN_FILENO, "r"); 341 } else { 342 f = fopen(argv[0], "r"); 343 } 344 if (f == NULL) 345 err(1, "Cannot read %s", 346 argc>0?argv[0]:"stdin"); 347 348 while(fgets(buf, sizeof(buf), f) != NULL) { 349 s=strrchr(buf, '\n'); 350 if (s) 351 *s = '\0'; 352 353 p_cksum = p_filename = NULL; 354 355 p_filename = strchr(buf, '('); 356 if (p_filename) { 357 /* 358 * Assume 'normal' output if there's a '(' 359 */ 360 p_filename += 1; 361 normal = 0; 362 363 p_cksum = strrchr(p_filename, ')'); 364 if (p_cksum == NULL) { 365 if (check_warn) 366 warnx("bogus format: %s. " 367 "Skipping...", 368 buf); 369 rval = 1; 370 continue; 371 } 372 p_cksum += 4; 373 374 l_cksum = strlen(p_cksum); 375 l_filename = p_cksum - p_filename - 4; 376 377 /* Sanity check, and find proper hash if 378 * it's not the same as the current program 379 */ 380 if (hash == NULL || 381 strncmp(buf, hash->hashname, 382 strlen(hash->hashname)) != 0) { 383 /* 384 * Search proper hash 385 */ 386 struct hash *nhash; 387 388 for (nhash = hashes ; 389 nhash->hashname != NULL; 390 nhash++) 391 if (strncmp(buf, 392 nhash->hashname, 393 strlen(nhash->hashname)) == 0) 394 break; 395 396 397 if (nhash->hashname == NULL) { 398 if (check_warn) 399 warnx("unknown hash: %s", 400 buf); 401 rval = 1; 402 continue; 403 } else { 404 hash = nhash; 405 } 406 } 407 408 } else { 409 if (hash) { 410 /* 411 * 'normal' output, no (ck)sum 412 */ 413 normal = 1; 414 415 p_cksum = buf; 416 p_filename = strchr(buf, ' '); 417 if (p_filename == NULL) { 418 if (check_warn) 419 warnx("no filename in %s? " 420 "Skipping...", buf); 421 rval = 1; 422 continue; 423 } 424 p_filename++; 425 l_filename = strlen(p_filename); 426 l_cksum = p_filename - buf - 1; 427 } else { 428 /* 429 * sum/cksum output format 430 */ 431 p_cksum = buf; 432 s=strchr(p_cksum, ' '); 433 if (s == NULL) { 434 if (check_warn) 435 warnx("bogus format: %s." 436 " Skipping...", 437 buf); 438 rval = 1; 439 continue; 440 } 441 l_cksum = s - p_cksum; 442 443 p_filename = strrchr(buf, ' '); 444 if (p_filename == NULL) { 445 if (check_warn) 446 warnx("no filename in %s?" 447 " Skipping...", 448 buf); 449 rval = 1; 450 continue; 451 } 452 p_filename++; 453 l_filename = strlen(p_filename); 454 } 455 } 456 457 strlcpy(filename, p_filename, l_filename+1); 458 strlcpy(cksum, p_cksum, l_cksum+1); 459 460 if (hash) { 461 if (access(filename, R_OK) == 0 462 && strcmp(cksum, hash->filefunc(filename, NULL)) == 0) 463 ok = 1; 464 else 465 ok = 0; 466 } else { 467 if ((fd = open(filename, O_RDONLY, 0)) < 0) { 468 if (check_warn) 469 warn("%s", filename); 470 rval = 1; 471 ok = 0; 472 } else { 473 if (cfncn(fd, &val, &len)) 474 ok = 0; 475 else { 476 u_int32_t should_val; 477 478 should_val = 479 strtoul(cksum, NULL, 10); 480 if (val == should_val) 481 ok = 1; 482 else 483 ok = 0; 484 } 485 } 486 } 487 488 if (! ok) { 489 if (hash) 490 printf("(%s) ", hash->hashname); 491 printf("%s: FAILED\n", filename); 492 badcnt++; 493 } 494 cnt++; 495 496 } 497 fclose(f); 498 499 if (badcnt > 0) 500 rval = 1; 501 502 } else { 503 /* 504 * Calculate checksums 505 */ 506 507 fd = STDIN_FILENO; 508 fn = NULL; 509 rval = 0; 510 do { 511 if (*argv) { 512 fn = *argv++; 513 if (hash != NULL) { 514 if (hash_digest_file(fn, hash, normal)) { 515 warn("%s", fn); 516 rval = 1; 517 } 518 continue; 519 } 520 if ((fd = open(fn, O_RDONLY, 0)) < 0) { 521 warn("%s", fn); 522 rval = 1; 523 continue; 524 } 525 } else if (hash && !nohashstdin) { 526 hash->filterfunc(pflag); 527 } 528 529 if (hash == NULL) { 530 if (cfncn(fd, &val, &len)) { 531 warn("%s", fn ? fn : "stdin"); 532 rval = 1; 533 } else 534 pfncn(fn, val, len); 535 (void)close(fd); 536 } 537 } while (*argv); 538 } 539 exit(rval); 540 } 541 542 int 543 hash_digest_file(char *fn, struct hash *hash, int normal) 544 { 545 char *cp; 546 547 cp = hash->filefunc(fn, NULL); 548 if (cp == NULL) 549 return 1; 550 551 if (normal) 552 printf("%s %s\n", cp, fn); 553 else 554 printf("%s (%s) = %s\n", hash->hashname, fn, cp); 555 556 free(cp); 557 558 return 0; 559 } 560 561 void 562 requirehash(const char *flg) 563 { 564 warnx("%s flag requires `md2', `md4', `md5', `sha1', or `rmd160'", 565 flg); 566 usage(); 567 } 568 569 void 570 usage(void) 571 { 572 573 (void)fprintf(stderr, "usage: cksum [-nw] [-a algorithm | -c file | -m | -1 | -2 | -4 | -5 | -6 \n\t\t| [-o 1 | 2]] [file ...]\n"); 574 (void)fprintf(stderr, " sum [-c] [file ...]\n"); 575 (void)fprintf(stderr, 576 " md2 [-n] [-p | -t | -x | -s string] [file ...]\n"); 577 (void)fprintf(stderr, 578 " md4 [-n] [-p | -t | -x | -s string] [file ...]\n"); 579 (void)fprintf(stderr, 580 " md5 [-n] [-p | -t | -x | -s string] [file ...]\n"); 581 (void)fprintf(stderr, 582 " sha1 [-n] [-p | -t | -x | -s string] [file ...]\n"); 583 (void)fprintf(stderr, 584 " rmd160 [-n] [-p | -t | -x | -s string] [file ...]\n"); 585 exit(1); 586 } 587
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