sbin/md5/md5.c

   1 /*
   2  * Derived from:
   3  *
   4  * MDDRIVER.C - test driver for MD2, MD4 and MD5
   5  */
   6
   7 /*
   8  *  Copyright (C) 1990-2, RSA Data Security, Inc. Created 1990. All
   9  *  rights reserved.
  10  *
  11  *  RSA Data Security, Inc. makes no representations concerning either
  12  *  the merchantability of this software or the suitability of this
  13  *  software for any particular purpose. It is provided "as is"
  14  *  without express or implied warranty of any kind.
  15  *
  16  *  These notices must be retained in any copies of any part of this
  17  *  documentation and/or software.
  18  */
  19
  20 #include <sys/cdefs.h>
  21 __FBSDID("$FreeBSD$");
  22
  23 #include <sys/param.h>
  24 #include <sys/resource.h>
  25 #include <sys/stat.h>
  26 #include <sys/time.h>
  27
  28 #include <err.h>
  29 #include <errno.h>
  30 #include <fcntl.h>
  31 #include <getopt.h>
  32 #include <md5.h>
  33 #include <osreldate.h>
  34 #include <ripemd.h>
  35 #include <sha.h>
  36 #include <sha224.h>
  37 #include <sha256.h>
  38 #include <sha384.h>
  39 #include <sha512.h>
  40 #include <sha512t.h>
  41 #include <skein.h>
  42 #include <stdbool.h>
  43 #include <stdio.h>
  44 #include <stdlib.h>
  45 #include <string.h>
  46 #include <time.h>
  47 #include <unistd.h>
  48
  49 #ifdef HAVE_CAPSICUM
  50 #include <sys/capsicum.h>
  51 #include <capsicum_helpers.h>
  52 #endif
  53
  54 /*
  55  * Length of test block, number of test blocks.
  56  */
  57 #define TEST_BLOCK_LEN 10000
  58 #define TEST_BLOCK_COUNT 100000
  59 #define MDTESTCOUNT 8
  60
  61 static char *progname;
  62
  63 static bool cflag;
  64 static bool pflag;
  65 static bool qflag;
  66 static bool sflag;
  67 static bool wflag;
  68 static bool strict;
  69 static bool skip;
  70 static bool ignoreMissing;
  71 static char* checkAgainst;
  72 static int checksFailed;
  73 static bool failed;
  74 static int endl = '\n';
  75
  76 typedef void (DIGEST_Init)(void *);
  77 typedef void (DIGEST_Update)(void *, const unsigned char *, size_t);
  78 typedef char *(DIGEST_End)(void *, char *);
  79
  80 extern const char *MD5TestOutput[MDTESTCOUNT];
  81 extern const char *SHA1_TestOutput[MDTESTCOUNT];
  82 extern const char *SHA224_TestOutput[MDTESTCOUNT];
  83 extern const char *SHA256_TestOutput[MDTESTCOUNT];
  84 extern const char *SHA384_TestOutput[MDTESTCOUNT];
  85 extern const char *SHA512_TestOutput[MDTESTCOUNT];
  86 extern const char *SHA512t224_TestOutput[MDTESTCOUNT];
  87 extern const char *SHA512t256_TestOutput[MDTESTCOUNT];
  88 extern const char *RIPEMD160_TestOutput[MDTESTCOUNT];
  89 extern const char *SKEIN256_TestOutput[MDTESTCOUNT];
  90 extern const char *SKEIN512_TestOutput[MDTESTCOUNT];
  91 extern const char *SKEIN1024_TestOutput[MDTESTCOUNT];
  92
  93 typedef struct Algorithm_t {
  94         const char *progname;
  95         const char *perlname;
  96         const char *name;
  97         const char *(*TestOutput)[MDTESTCOUNT];
  98         DIGEST_Init *Init;
  99         DIGEST_Update *Update;
 100         DIGEST_End *End;
 101         char *(*Data)(const void *, unsigned int, char *);
 102 } Algorithm_t;
 103
 104 static void MD5_Update(MD5_CTX *, const unsigned char *, size_t);
 105 static char *MDInput(const Algorithm_t *, FILE *, char *, bool);
 106 static void MDOutput(const Algorithm_t *, char *, const char *);
 107 static void MDTimeTrial(const Algorithm_t *);
 108 static void MDTestSuite(const Algorithm_t *);
 109 static void usage(const Algorithm_t *);
 110 static void version(void);
 111
 112 typedef union {
 113         MD5_CTX md5;
 114         SHA1_CTX sha1;
 115         SHA224_CTX sha224;
 116         SHA256_CTX sha256;
 117         SHA384_CTX sha384;
 118         SHA512_CTX sha512;
 119         RIPEMD160_CTX ripemd160;
 120         SKEIN256_CTX skein256;
 121         SKEIN512_CTX skein512;
 122         SKEIN1024_CTX skein1024;
 123 } DIGEST_CTX;
 124
 125 /* max(MD5_DIGEST_LENGTH, SHA_DIGEST_LENGTH,
 126         SHA256_DIGEST_LENGTH, SHA512_DIGEST_LENGTH,
 127         RIPEMD160_DIGEST_LENGTH, SKEIN1024_DIGEST_LENGTH)*2+1 */
 128 #define HEX_DIGEST_LENGTH 257
 129
 130 /* algorithm function table */
 131
 132 static const struct Algorithm_t Algorithm[] = {
 133         { "md5", NULL, "MD5",
 134                 &MD5TestOutput, (DIGEST_Init*)&MD5Init,
 135                 (DIGEST_Update*)&MD5_Update, (DIGEST_End*)&MD5End,
 136                 &MD5Data },
 137         { "sha1", "1", "SHA1",
 138                 &SHA1_TestOutput, (DIGEST_Init*)&SHA1_Init,
 139                 (DIGEST_Update*)&SHA1_Update, (DIGEST_End*)&SHA1_End,
 140                 &SHA1_Data },
 141         { "sha224", "224", "SHA224",
 142                 &SHA224_TestOutput, (DIGEST_Init*)&SHA224_Init,
 143                 (DIGEST_Update*)&SHA224_Update, (DIGEST_End*)&SHA224_End,
 144                 &SHA224_Data },
 145         { "sha256", "256", "SHA256",
 146                 &SHA256_TestOutput, (DIGEST_Init*)&SHA256_Init,
 147                 (DIGEST_Update*)&SHA256_Update, (DIGEST_End*)&SHA256_End,
 148                 &SHA256_Data },
 149         { "sha384", "384", "SHA384",
 150                 &SHA384_TestOutput, (DIGEST_Init*)&SHA384_Init,
 151                 (DIGEST_Update*)&SHA384_Update, (DIGEST_End*)&SHA384_End,
 152                 &SHA384_Data },
 153         { "sha512", "512", "SHA512",
 154                 &SHA512_TestOutput, (DIGEST_Init*)&SHA512_Init,
 155                 (DIGEST_Update*)&SHA512_Update, (DIGEST_End*)&SHA512_End,
 156                 &SHA512_Data },
 157         { "sha512t224", "512224", "SHA512t224",
 158                 &SHA512t224_TestOutput, (DIGEST_Init*)&SHA512_224_Init,
 159                 (DIGEST_Update*)&SHA512_224_Update, (DIGEST_End*)&SHA512_224_End,
 160                 &SHA512_224_Data },
 161         { "sha512t256", "512256", "SHA512t256",
 162                 &SHA512t256_TestOutput, (DIGEST_Init*)&SHA512_256_Init,
 163                 (DIGEST_Update*)&SHA512_256_Update, (DIGEST_End*)&SHA512_256_End,
 164                 &SHA512_256_Data },
 165         { "rmd160", NULL, "RMD160",
 166                 &RIPEMD160_TestOutput,
 167                 (DIGEST_Init*)&RIPEMD160_Init, (DIGEST_Update*)&RIPEMD160_Update,
 168                 (DIGEST_End*)&RIPEMD160_End, &RIPEMD160_Data },
 169         { "skein256", NULL, "Skein256",
 170                 &SKEIN256_TestOutput,
 171                 (DIGEST_Init*)&SKEIN256_Init, (DIGEST_Update*)&SKEIN256_Update,
 172                 (DIGEST_End*)&SKEIN256_End, &SKEIN256_Data },
 173         { "skein512", NULL, "Skein512",
 174                 &SKEIN512_TestOutput,
 175                 (DIGEST_Init*)&SKEIN512_Init, (DIGEST_Update*)&SKEIN512_Update,
 176                 (DIGEST_End*)&SKEIN512_End, &SKEIN512_Data },
 177         { "skein1024", NULL, "Skein1024",
 178                 &SKEIN1024_TestOutput,
 179                 (DIGEST_Init*)&SKEIN1024_Init, (DIGEST_Update*)&SKEIN1024_Update,
 180                 (DIGEST_End*)&SKEIN1024_End, &SKEIN1024_Data },
 181         { }
 182 };
 183
 184 static int digest = -1;
 185 static unsigned int malformed;
 186
 187 static enum mode {
 188         mode_bsd,
 189         mode_gnu,
 190         mode_perl,
 191 } mode = mode_bsd;
 192
 193 static enum input_mode {
 194         input_binary     = '*',
 195         input_text       = ' ',
 196         input_universal  = 'U',
 197         input_bits       = '^',
 198 } input_mode = input_binary;
 199
 200 static enum output_mode {
 201         output_bare,
 202         output_tagged,
 203         output_reverse,
 204         output_gnu,
 205 } output_mode = output_tagged;
 206
 207 enum optval {
 208         opt_end = -1,
 209         /* ensure we don't collide with shortopts */
 210         opt_dummy = CHAR_MAX,
 211         /* BSD options */
 212         opt_check,
 213         opt_passthrough,
 214         opt_quiet,
 215         opt_reverse,
 216         opt_string,
 217         opt_time_trial,
 218         opt_self_test,
 219         /* GNU options */
 220         opt_binary,
 221         opt_help,
 222         opt_ignore_missing,
 223         opt_status,
 224         opt_strict,
 225         opt_tag,
 226         opt_text,
 227         opt_warn,
 228         opt_version,
 229         opt_zero,
 230         /* Perl options */
 231         opt_algorithm,
 232         opt_bits,
 233         opt_universal,
 234 };
 235
 236 static const struct option bsd_longopts[] = {
 237         { "check",              required_argument,      0, opt_check },
 238         { "passthrough",        no_argument,            0, opt_passthrough },
 239         { "quiet",              no_argument,            0, opt_quiet },
 240         { "reverse",            no_argument,            0, opt_reverse },
 241         { "string",             required_argument,      0, opt_string },
 242         { "time-trial",         no_argument,            0, opt_time_trial },
 243         { "self-test",          no_argument,            0, opt_self_test },
 244         { }
 245 };
 246 static const char *bsd_shortopts = "bc:pqrs:tx";
 247
 248 static const struct option gnu_longopts[] = {
 249         { "binary",             no_argument,            0, opt_binary },
 250         { "check",              no_argument,            0, opt_check },
 251         { "help",               no_argument,            0, opt_help },
 252         { "ignore-missing",     no_argument,            0, opt_ignore_missing },
 253         { "quiet",              no_argument,            0, opt_quiet },
 254         { "status",             no_argument,            0, opt_status },
 255         { "strict",             no_argument,            0, opt_strict },
 256         { "tag",                no_argument,            0, opt_tag },
 257         { "text",               no_argument,            0, opt_text },
 258         { "version",            no_argument,            0, opt_version },
 259         { "warn",               no_argument,            0, opt_warn },
 260         { "zero",               no_argument,            0, opt_zero },
 261         { }
 262 };
 263 static const char *gnu_shortopts = "bctwz";
 264
 265 static const struct option perl_longopts[] = {
 266         { "algorithm",          required_argument,      0, opt_algorithm },
 267         { "check",              required_argument,      0, opt_check },
 268         { "help",               no_argument,            0, opt_help },
 269         { "ignore-missing",     no_argument,            0, opt_ignore_missing },
 270         { "quiet",              no_argument,            0, opt_quiet },
 271         { "status",             no_argument,            0, opt_status },
 272         { "strict",             no_argument,            0, opt_strict },
 273         { "tag",                no_argument,            0, opt_tag },
 274         { "text",               no_argument,            0, opt_text },
 275         { "UNIVERSAL",          no_argument,            0, opt_universal },
 276         { "version",            no_argument,            0, opt_version },
 277         { "warn",               no_argument,            0, opt_warn },
 278         { "01",                 no_argument,            0, opt_bits },
 279         { }
 280 };
 281 static const char *perl_shortopts = "0a:bchqstUvw";
 282
 283 static void
 284 MD5_Update(MD5_CTX *c, const unsigned char *data, size_t len)
 285 {
 286         MD5Update(c, data, len);
 287 }
 288
 289 struct chksumrec {
 290         char    *filename;
 291         char    *chksum;
 292         struct  chksumrec       *next;
 293 };
 294
 295 static struct chksumrec *head = NULL;
 296 static struct chksumrec **next = &head;
 297 static unsigned int numrecs;
 298
 299 #define PADDING 7       /* extra padding for "SHA512t256 (...) = ...\n" style */
 300 #define CHKFILELINELEN  (HEX_DIGEST_LENGTH + MAXPATHLEN + PADDING)
 301
 302 static void
 303 gnu_check(const char *checksumsfile)
 304 {
 305         FILE    *inp;
 306         char    *linebuf = NULL;
 307         size_t  linecap;
 308         ssize_t linelen;
 309         int     lineno;
 310         char    *filename;
 311         char    *hashstr;
 312         struct chksumrec        *rec;
 313         const char      *digestname;
 314         size_t  digestnamelen;
 315         size_t  hashstrlen;
 316
 317         if (strcmp(checksumsfile, "-") == 0)
 318                 inp = stdin;
 319         else if ((inp = fopen(checksumsfile, "r")) == NULL)
 320                 err(1, "%s", checksumsfile);
 321         digestname = Algorithm[digest].name;
 322         digestnamelen = strlen(digestname);
 323         hashstrlen = strlen(*(Algorithm[digest].TestOutput[0]));
 324         lineno = 0;
 325         linecap = CHKFILELINELEN;
 326         while ((linelen = getline(&linebuf, &linecap, inp)) > 0) {
 327                 lineno++;
 328                 while (linelen > 0 && linebuf[linelen - 1] == '\n')
 329                         linelen--;
 330                 linebuf[linelen] = '\0';
 331                 filename = linebuf + digestnamelen + 2;
 332                 hashstr = linebuf + linelen - hashstrlen;
 333                 /*
 334                  * supported formats:
 335                  * BSD: <DigestName> (<Filename>): <Digest>
 336                  * GNU: <Digest> [ *U^]<Filename>
 337                  */
 338                 if ((size_t)linelen >= digestnamelen + hashstrlen + 6 &&
 339                     strncmp(linebuf, digestname, digestnamelen) == 0 &&
 340                     strncmp(filename - 2, " (", 2) == 0 &&
 341                     strncmp(hashstr - 4, ") = ", 4) == 0 &&
 342                     strspn(hashstr, "0123456789ABCDEFabcdef") == hashstrlen) {
 343                         *(hashstr - 4) = '\0';
 344                 } else if ((size_t)linelen >= hashstrlen + 3 &&
 345                     strspn(linebuf, "0123456789ABCDEFabcdef") == hashstrlen &&
 346                     linebuf[hashstrlen] == ' ') {
 347                         linebuf[hashstrlen] = '\0';
 348                         hashstr = linebuf;
 349                         filename = linebuf + hashstrlen + 1;
 350                 } else {
 351                         if (wflag) {
 352                                 warnx("%s: %d: improperly formatted "
 353                                     "%s checksum line",
 354                                     checksumsfile, lineno,
 355                                     mode == mode_perl ? "SHA" : digestname);
 356                         }
 357                         malformed++;
 358                         continue;
 359                 }
 360                 rec = malloc(sizeof(*rec));
 361                 if (rec == NULL)
 362                         errx(1, "malloc failed");
 363                 rec->chksum = strdup(hashstr);
 364                 rec->filename = strdup(filename);
 365                 if (rec->chksum == NULL || rec->filename == NULL)
 366                         errx(1, "malloc failed");
 367                 rec->next = NULL;
 368                 *next = rec;
 369                 next = &rec->next;
 370                 numrecs++;
 371         }
 372         if (inp != stdin)
 373                 fclose(inp);
 374 }
 375
 376 /* Main driver.
 377
 378 Arguments (may be any combination):
 379   -sstring - digests string
 380   -t       - runs time trial
 381   -x       - runs test script
 382   filename - digests file
 383   (none)   - digests standard input
 384  */
 385 int
 386 main(int argc, char *argv[])
 387 {
 388 #ifdef HAVE_CAPSICUM
 389         cap_rights_t    rights;
 390 #endif
 391         const struct option *longopts;
 392         const char *shortopts;
 393         FILE   *f;
 394         int     i, opt;
 395         char   *p, *string = NULL;
 396         char    buf[HEX_DIGEST_LENGTH];
 397         size_t  len;
 398         struct chksumrec        *rec;
 399
 400         if ((progname = strrchr(argv[0], '/')) == NULL)
 401                 progname = argv[0];
 402         else
 403                 progname++;
 404
 405         /*
 406          * GNU coreutils has a number of programs named *sum. These produce
 407          * similar results to the BSD version, but in a different format,
 408          * similar to BSD's -r flag. We install links to this program with
 409          * ending 'sum' to provide this compatibility. Check here to see if the
 410          * name of the program ends in 'sum', set the flag and drop the 'sum' so
 411          * the digest lookup works. Also, make -t a nop when running in this mode
 412          * since that means 'text file' there (though it's a nop in coreutils
 413          * on unix-like systems). The -c flag conflicts, so it's just disabled
 414          * in this mode (though in the future it might be implemented).
 415          *
 416          * We also strive to be compatible with the shasum script which is
 417          * included in Perl.  It is roughly equivalent to the GNU offering
 418          * but uses a command-line argument to select the algorithm, and
 419          * supports only SHA-1 and SHA-2.
 420          */
 421         len = strlen(progname);
 422         if (strcmp(progname, "shasum") == 0) {
 423                 mode = mode_perl;
 424                 input_mode = input_text;
 425                 output_mode = output_gnu;
 426                 digest = 1;
 427                 longopts = perl_longopts;
 428                 shortopts = perl_shortopts;
 429         } else if (len > 3 && strcmp(progname + len - 3, "sum") == 0) {
 430                 len -= 3;
 431                 mode = mode_gnu;
 432                 input_mode = input_text;
 433                 /*
 434                  * The historical behavior in GNU emulation mode is
 435                  * output_reverse, however this not true to the original
 436                  * and the flag that was used to force the correct output
 437                  * was -b, which means something else (input_binary) in
 438                  * GNU land.  Switch to the correct behavior.
 439                  */
 440                 output_mode = output_gnu;
 441                 longopts = gnu_longopts;
 442                 shortopts = gnu_shortopts;
 443         } else {
 444                 mode = mode_bsd;
 445                 input_mode = input_binary;
 446                 output_mode = output_tagged;
 447                 longopts = bsd_longopts;
 448                 shortopts = bsd_shortopts;
 449         }
 450
 451         if (digest < 0) {
 452                 for (digest = 0; Algorithm[digest].progname != NULL; digest++)
 453                         if (strncasecmp(Algorithm[digest].progname, progname, len) == 0)
 454                                 break;
 455
 456                 if (Algorithm[digest].progname == NULL)
 457                         digest = 0;
 458         }
 459
 460         failed = false;
 461         checkAgainst = NULL;
 462         checksFailed = 0;
 463         skip = false;
 464         while ((opt = getopt_long(argc, argv, shortopts, longopts, NULL)) != opt_end)
 465                 switch (opt) {
 466                 case opt_bits:
 467                 case '0':
 468                         input_mode = input_bits;
 469                         break;
 470                 case opt_algorithm:
 471                 case 'a':
 472                         for (i = 0; Algorithm[i].progname != NULL; i++) {
 473                                 if (Algorithm[i].perlname != NULL &&
 474                                     strcasecmp(Algorithm[i].perlname, optarg) == 0) {
 475                                         digest = i;
 476                                         break;
 477                                 }
 478                         }
 479                         if (Algorithm[i].progname == NULL)
 480                                 usage(&Algorithm[digest]);
 481                         break;
 482                 case opt_binary:
 483                 case 'b':
 484                         /* in BSD mode, -b is now a no-op */
 485                         if (mode != mode_bsd)
 486                                 input_mode = input_binary;
 487                         break;
 488                 case opt_check:
 489                 case 'c':
 490                         cflag = true;
 491                         if (mode == mode_bsd)
 492                                 checkAgainst = optarg;
 493                         break;
 494                 case opt_passthrough:
 495                 case 'p':
 496                         pflag = true;
 497                         break;
 498                 case opt_quiet:
 499                 case 'q':
 500                         output_mode = output_bare;
 501                         qflag = true;
 502                         break;
 503                 case opt_reverse:
 504                 case 'r':
 505                         if (!qflag)
 506                                 output_mode = output_reverse;
 507                         break;
 508                 case opt_status:
 509                         sflag = true;
 510                         break;
 511                 case opt_strict:
 512                         strict = 1;
 513                         break;
 514                 case 's':
 515                         if (mode == mode_perl) {
 516                                 sflag = true;
 517                                 break;
 518                         }
 519                         /* fall through */
 520                 case opt_string:
 521                         output_mode = output_bare;
 522                         string = optarg;
 523                         break;
 524                 case opt_tag:
 525                         output_mode = output_tagged;
 526                         break;
 527                 case opt_time_trial:
 528                 case opt_text:
 529                 case 't':
 530                         if (mode == mode_bsd) {
 531                                 MDTimeTrial(&Algorithm[digest]);
 532                                 skip = true;
 533                         } else {
 534                                 input_mode = input_text;
 535                         }
 536                         break;
 537                 case opt_universal:
 538                 case 'U':
 539                         input_mode = input_universal;
 540                         break;
 541                 case opt_version:
 542                         version();
 543                         break;
 544                 case opt_warn:
 545                 case 'w':
 546                         wflag = true;
 547                         break;
 548                 case opt_self_test:
 549                 case 'x':
 550                         MDTestSuite(&Algorithm[digest]);
 551                         skip = true;
 552                         break;
 553                 case opt_zero:
 554                 case 'z':
 555                         endl = '\0';
 556                         break;
 557                 case opt_ignore_missing:
 558                         ignoreMissing = true;
 559                         break;
 560                 default:
 561                         usage(&Algorithm[digest]);
 562                 }
 563         argc -= optind;
 564         argv += optind;
 565
 566 #ifdef HAVE_CAPSICUM
 567         if (caph_limit_stdout() < 0 || caph_limit_stderr() < 0)
 568                 err(1, "unable to limit rights for stdio");
 569 #endif
 570
 571         if (cflag && mode != mode_bsd) {
 572                 /*
 573                  * Read digest files into a linked list, then replace argv
 574                  * with an array of the filenames from that list.
 575                  */
 576                 if (argc < 1)
 577                         usage(&Algorithm[digest]);
 578                 while (argc--)
 579                         gnu_check(*argv++);
 580                 argc = 0;
 581                 argv = calloc(sizeof(char *), numrecs + 1);
 582                 for (rec = head; rec != NULL; rec = rec->next) {
 583                         argv[argc] = rec->filename;
 584                         argc++;
 585                 }
 586                 argv[argc] = NULL;
 587                 rec = head;
 588         }
 589
 590         if (*argv) {
 591                 do {
 592                         struct stat st;
 593                         const char *filename = *argv;
 594                         const char *filemode = "rb";
 595
 596                         if (*filename == '*' ||
 597                             *filename == ' ' ||
 598                             *filename == 'U' ||
 599                             *filename == '^') {
 600                                 if (lstat(filename, &st) != 0) {
 601                                         input_mode = (int)*filename;
 602                                         filename++;
 603                                 }
 604                         }
 605                         if (input_mode == input_text)
 606                                 filemode = "r";
 607                         if ((f = fopen(filename, filemode)) == NULL) {
 608                                 if (errno != ENOENT || !(cflag && ignoreMissing)) {
 609                                         warn("%s", filename);
 610                                         failed = true;
 611                                 }
 612                                 if (cflag && mode != mode_bsd)
 613                                         rec = rec->next;
 614                                 continue;
 615                         }
 616                         /*
 617                          * XXX Enter capability mode on the last argv file.
 618                          * When a casper file service or other approach is
 619                          * available, switch to that and enter capability mode
 620                          * earlier.
 621                          */
 622                         if (*(argv + 1) == NULL) {
 623 #ifdef HAVE_CAPSICUM
 624                                 cap_rights_init(&rights, CAP_READ);
 625                                 if (caph_rights_limit(fileno(f), &rights) < 0 ||
 626                                     caph_enter() < 0)
 627                                         err(1, "capsicum");
 628 #endif
 629                         }
 630                         if (cflag && mode != mode_bsd) {
 631                                 checkAgainst = rec->chksum;
 632                                 rec = rec->next;
 633                         }
 634                         p = MDInput(&Algorithm[digest], f, buf, false);
 635                         (void)fclose(f);
 636                         MDOutput(&Algorithm[digest], p, filename);
 637                 } while (*++argv);
 638         } else if (!cflag && string == NULL && !skip) {
 639 #ifdef HAVE_CAPSICUM
 640                 if (caph_limit_stdin() < 0 || caph_enter() < 0)
 641                         err(1, "capsicum");
 642 #endif
 643                 if (mode == mode_bsd)
 644                         output_mode = output_bare;
 645                 p = MDInput(&Algorithm[digest], stdin, buf, pflag);
 646                 MDOutput(&Algorithm[digest], p, "-");
 647         } else if (string != NULL) {
 648                 len = strlen(string);
 649                 p = Algorithm[digest].Data(string, len, buf);
 650                 MDOutput(&Algorithm[digest], p, string);
 651         }
 652         if (cflag && mode != mode_bsd) {
 653                 if (!sflag && malformed > 1)
 654                         warnx("WARNING: %d lines are improperly formatted", malformed);
 655                 else if (!sflag && malformed > 0)
 656                         warnx("WARNING: %d line is improperly formatted", malformed);
 657                 if (!sflag && checksFailed > 1)
 658                         warnx("WARNING: %d computed checksums did NOT match", checksFailed);
 659                 else if (!sflag && checksFailed > 0)
 660                         warnx("WARNING: %d computed checksum did NOT match", checksFailed);
 661                 if (checksFailed != 0 || (strict && malformed > 0))
 662                         return (1);
 663         }
 664         if (failed)
 665                 return (1);
 666         if (checksFailed > 0)
 667                 return (2);
 668
 669         return (0);
 670 }
 671
 672 /*
 673  * Common input handling
 674  */
 675 static char *
 676 MDInput(const Algorithm_t *alg, FILE *f, char *buf, bool tee)
 677 {
 678         char block[4096];
 679         DIGEST_CTX context;
 680         char *end, *p, *q;
 681         size_t len;
 682         int bits;
 683         uint8_t byte;
 684         bool cr = false;
 685
 686         alg->Init(&context);
 687         while ((len = fread(block, 1, sizeof(block), f)) > 0) {
 688                 switch (input_mode) {
 689                 case input_binary:
 690                 case input_text:
 691                         if (tee && fwrite(block, 1, len, stdout) != len)
 692                                 err(1, "stdout");
 693                         alg->Update(&context, block, len);
 694                         break;
 695                 case input_universal:
 696                         end = block + len;
 697                         for (p = q = block; p < end; p = q) {
 698                                 if (cr) {
 699                                         if (*p == '\n')
 700                                                 p++;
 701                                         if (tee && putchar('\n') == EOF)
 702                                                 err(1, "stdout");
 703                                         alg->Update(&context, "\n", 1);
 704                                         cr = false;
 705                                 }
 706                                 for (q = p; q < end && *q != '\r'; q++)
 707                                         /* nothing */;
 708                                 if (q > p) {
 709                                         if (tee &&
 710                                             fwrite(p, 1, q - p, stdout) !=
 711                                             (size_t)(q - p))
 712                                                 err(1, "stdout");
 713                                         alg->Update(&context, p, q - p);
 714                                 }
 715                                 if (q < end && *q == '\r') {
 716                                         cr = true;
 717                                         q++;
 718                                 }
 719                         }
 720                         break;
 721                 case input_bits:
 722                         end = block + len;
 723                         bits = byte = 0;
 724                         for (p = block; p < end; p++) {
 725                                 if (*p == '0' || *p == '1') {
 726                                         byte <<= 1;
 727                                         byte |= *p - '0';
 728                                         if (++bits == 8) {
 729                                                 if (tee && putchar(byte) == EOF)
 730                                                         err(1, "stdout");
 731                                                 alg->Update(&context, &byte, 1);
 732                                                 bits = byte = 0;
 733                                         }
 734                                 }
 735                         }
 736                         break;
 737                 }
 738         }
 739         if (ferror(f)) {
 740                 alg->End(&context, buf);
 741                 return (NULL);
 742         }
 743         if (cr) {
 744                 if (tee && putchar('\n') == EOF)
 745                         err(1, "stdout");
 746                 alg->Update(&context, "\n", 1);
 747         }
 748         if (input_mode == input_bits && bits != 0)
 749                 errx(1, "input length was not a multiple of 8");
 750         return (alg->End(&context, buf));
 751 }
 752
 753 /*
 754  * Common output handling
 755  */
 756 static void
 757 MDOutput(const Algorithm_t *alg, char *p, const char *name)
 758 {
 759         bool checkfailed = false;
 760
 761         if (p == NULL) {
 762                 warn("%s", name);
 763                 failed = true;
 764         } else if (cflag && mode != mode_bsd) {
 765                 checkfailed = strcasecmp(checkAgainst, p) != 0;
 766                 if (!sflag && (!qflag || checkfailed))
 767                         printf("%s: %s%c", name, checkfailed ? "FAILED" : "OK",
 768                             endl);
 769         } else {
 770                 switch (output_mode) {
 771                 case output_bare:
 772                         printf("%s", p);
 773                         break;
 774                 case output_gnu:
 775                         printf("%s %c%s", p, input_mode, name);
 776                         break;
 777                 case output_reverse:
 778                         printf("%s %s", p, name);
 779                         break;
 780                 case output_tagged:
 781                         if (mode == mode_perl &&
 782                             strncmp(alg->name, "SHA512t", 7) == 0) {
 783                                 printf("%.6s/%s", alg->name, alg->name + 7);
 784                         } else {
 785                                 printf("%s", alg->name);
 786                         }
 787                         printf(" (%s) = %s", name, p);
 788                         break;
 789                 }
 790                 if (checkAgainst) {
 791                         checkfailed = strcasecmp(checkAgainst, p) != 0;
 792                         if (!qflag && checkfailed)
 793                                 printf(" [ Failed ]");
 794                 }
 795                 printf("%c", endl);
 796         }
 797         if (checkfailed)
 798                 checksFailed++;
 799 }
 800
 801 /*
 802  * Measures the time to digest TEST_BLOCK_COUNT TEST_BLOCK_LEN-byte blocks.
 803  */
 804 static void
 805 MDTimeTrial(const Algorithm_t *alg)
 806 {
 807         DIGEST_CTX context;
 808         struct rusage before, after;
 809         struct timeval total;
 810         float seconds;
 811         unsigned char block[TEST_BLOCK_LEN];
 812         unsigned int i;
 813         char *p, buf[HEX_DIGEST_LENGTH];
 814
 815         printf("%s time trial. Digesting %d %d-byte blocks ...",
 816             alg->name, TEST_BLOCK_COUNT, TEST_BLOCK_LEN);
 817         fflush(stdout);
 818
 819         /* Initialize block */
 820         for (i = 0; i < TEST_BLOCK_LEN; i++)
 821                 block[i] = (unsigned char) (i & 0xff);
 822
 823         /* Start timer */
 824         getrusage(RUSAGE_SELF, &before);
 825
 826         /* Digest blocks */
 827         alg->Init(&context);
 828         for (i = 0; i < TEST_BLOCK_COUNT; i++)
 829                 alg->Update(&context, block, TEST_BLOCK_LEN);
 830         p = alg->End(&context, buf);
 831
 832         /* Stop timer */
 833         getrusage(RUSAGE_SELF, &after);
 834         timersub(&after.ru_utime, &before.ru_utime, &total);
 835         seconds = total.tv_sec + (float) total.tv_usec / 1000000;
 836
 837         printf(" done\n");
 838         printf("Digest = %s", p);
 839         printf("\nTime = %f seconds\n", seconds);
 840         printf("Speed = %f MiB/second\n", (float) TEST_BLOCK_LEN *
 841                 (float) TEST_BLOCK_COUNT / seconds / (1 << 20));
 842 }
 843 /*
 844  * Digests a reference suite of strings and prints the results.
 845  */
 846
 847 static const char *MDTestInput[MDTESTCOUNT] = {
 848         "",
 849         "a",
 850         "abc",
 851         "message digest",
 852         "abcdefghijklmnopqrstuvwxyz",
 853         "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",
 854         "12345678901234567890123456789012345678901234567890123456789012345678901234567890",
 855         "MD5 has not yet (2001-09-03) been broken, but sufficient attacks have been made \
 856 that its security is in some doubt"
 857 };
 858
 859 const char *MD5TestOutput[MDTESTCOUNT] = {
 860         "d41d8cd98f00b204e9800998ecf8427e",
 861         "0cc175b9c0f1b6a831c399e269772661",
 862         "900150983cd24fb0d6963f7d28e17f72",
 863         "f96b697d7cb7938d525a2f31aaf161d0",
 864         "c3fcd3d76192e4007dfb496cca67e13b",
 865         "d174ab98d277d9f5a5611c2c9f419d9f",
 866         "57edf4a22be3c955ac49da2e2107b67a",
 867         "b50663f41d44d92171cb9976bc118538"
 868 };
 869
 870 const char *SHA1_TestOutput[MDTESTCOUNT] = {
 871         "da39a3ee5e6b4b0d3255bfef95601890afd80709",
 872         "86f7e437faa5a7fce15d1ddcb9eaeaea377667b8",
 873         "a9993e364706816aba3e25717850c26c9cd0d89d",
 874         "c12252ceda8be8994d5fa0290a47231c1d16aae3",
 875         "32d10c7b8cf96570ca04ce37f2a19d84240d3a89",
 876         "761c457bf73b14d27e9e9265c46f4b4dda11f940",
 877         "50abf5706a150990a08b2c5ea40fa0e585554732",
 878         "18eca4333979c4181199b7b4fab8786d16cf2846"
 879 };
 880
 881 const char *SHA224_TestOutput[MDTESTCOUNT] = {
 882         "d14a028c2a3a2bc9476102bb288234c415a2b01f828ea62ac5b3e42f",
 883         "abd37534c7d9a2efb9465de931cd7055ffdb8879563ae98078d6d6d5",
 884         "23097d223405d8228642a477bda255b32aadbce4bda0b3f7e36c9da7",
 885         "2cb21c83ae2f004de7e81c3c7019cbcb65b71ab656b22d6d0c39b8eb",
 886         "45a5f72c39c5cff2522eb3429799e49e5f44b356ef926bcf390dccc2",
 887         "bff72b4fcb7d75e5632900ac5f90d219e05e97a7bde72e740db393d9",
 888         "b50aecbe4e9bb0b57bc5f3ae760a8e01db24f203fb3cdcd13148046e",
 889         "5ae55f3779c8a1204210d7ed7689f661fbe140f96f272ab79e19d470"
 890 };
 891
 892 const char *SHA256_TestOutput[MDTESTCOUNT] = {
 893         "e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855",
 894         "ca978112ca1bbdcafac231b39a23dc4da786eff8147c4e72b9807785afee48bb",
 895         "ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad",
 896         "f7846f55cf23e14eebeab5b4e1550cad5b509e3348fbc4efa3a1413d393cb650",
 897         "71c480df93d6ae2f1efad1447c66c9525e316218cf51fc8d9ed832f2daf18b73",
 898         "db4bfcbd4da0cd85a60c3c37d3fbd8805c77f15fc6b1fdfe614ee0a7c8fdb4c0",
 899         "f371bc4a311f2b009eef952dd83ca80e2b60026c8e935592d0f9c308453c813e",
 900         "e6eae09f10ad4122a0e2a4075761d185a272ebd9f5aa489e998ff2f09cbfdd9f"
 901 };
 902
 903 const char *SHA384_TestOutput[MDTESTCOUNT] = {
 904         "38b060a751ac96384cd9327eb1b1e36a21fdb71114be07434c0cc7bf63f6e1da274edebfe76f65fbd51ad2f14898b95b",
 905         "54a59b9f22b0b80880d8427e548b7c23abd873486e1f035dce9cd697e85175033caa88e6d57bc35efae0b5afd3145f31",
 906         "cb00753f45a35e8bb5a03d699ac65007272c32ab0eded1631a8b605a43ff5bed8086072ba1e7cc2358baeca134c825a7",
 907         "473ed35167ec1f5d8e550368a3db39be54639f828868e9454c239fc8b52e3c61dbd0d8b4de1390c256dcbb5d5fd99cd5",
 908         "feb67349df3db6f5924815d6c3dc133f091809213731fe5c7b5f4999e463479ff2877f5f2936fa63bb43784b12f3ebb4",
 909         "1761336e3f7cbfe51deb137f026f89e01a448e3b1fafa64039c1464ee8732f11a5341a6f41e0c202294736ed64db1a84",
 910         "b12932b0627d1c060942f5447764155655bd4da0c9afa6dd9b9ef53129af1b8fb0195996d2de9ca0df9d821ffee67026",
 911         "99428d401bf4abcd4ee0695248c9858b7503853acfae21a9cffa7855f46d1395ef38596fcd06d5a8c32d41a839cc5dfb"
 912 };
 913
 914 const char *SHA512_TestOutput[MDTESTCOUNT] = {
 915         "cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e",
 916         "1f40fc92da241694750979ee6cf582f2d5d7d28e18335de05abc54d0560e0f5302860c652bf08d560252aa5e74210546f369fbbbce8c12cfc7957b2652fe9a75",
 917         "ddaf35a193617abacc417349ae20413112e6fa4e89a97ea20a9eeee64b55d39a2192992a274fc1a836ba3c23a3feebbd454d4423643ce80e2a9ac94fa54ca49f",
 918         "107dbf389d9e9f71a3a95f6c055b9251bc5268c2be16d6c13492ea45b0199f3309e16455ab1e96118e8a905d5597b72038ddb372a89826046de66687bb420e7c",
 919         "4dbff86cc2ca1bae1e16468a05cb9881c97f1753bce3619034898faa1aabe429955a1bf8ec483d7421fe3c1646613a59ed5441fb0f321389f77f48a879c7b1f1",
 920         "1e07be23c26a86ea37ea810c8ec7809352515a970e9253c26f536cfc7a9996c45c8370583e0a78fa4a90041d71a4ceab7423f19c71b9d5a3e01249f0bebd5894",
 921         "72ec1ef1124a45b047e8b7c75a932195135bb61de24ec0d1914042246e0aec3a2354e093d76f3048b456764346900cb130d2a4fd5dd16abb5e30bcb850dee843",
 922         "e8a835195e039708b13d9131e025f4441dbdc521ce625f245a436dcd762f54bf5cb298d96235e6c6a304e087ec8189b9512cbdf6427737ea82793460c367b9c3"
 923 };
 924
 925 const char *SHA512t224_TestOutput[MDTESTCOUNT] = {
 926         "6ed0dd02806fa89e25de060c19d3ac86cabb87d6a0ddd05c333b84f4",
 927         "d5cdb9ccc769a5121d4175f2bfdd13d6310e0d3d361ea75d82108327",
 928         "4634270f707b6a54daae7530460842e20e37ed265ceee9a43e8924aa",
 929         "ad1a4db188fe57064f4f24609d2a83cd0afb9b398eb2fcaeaae2c564",
 930         "ff83148aa07ec30655c1b40aff86141c0215fe2a54f767d3f38743d8",
 931         "a8b4b9174b99ffc67d6f49be9981587b96441051e16e6dd036b140d3",
 932         "ae988faaa47e401a45f704d1272d99702458fea2ddc6582827556dd2",
 933         "b3c3b945249b0c8c94aba76ea887bcaad5401665a1fbeb384af4d06b"
 934 };
 935
 936 const char *SHA512t256_TestOutput[MDTESTCOUNT] = {
 937         "c672b8d1ef56ed28ab87c3622c5114069bdd3ad7b8f9737498d0c01ecef0967a",
 938         "455e518824bc0601f9fb858ff5c37d417d67c2f8e0df2babe4808858aea830f8",
 939         "53048e2681941ef99b2e29b76b4c7dabe4c2d0c634fc6d46e0e2f13107e7af23",
 940         "0cf471fd17ed69d990daf3433c89b16d63dec1bb9cb42a6094604ee5d7b4e9fb",
 941         "fc3189443f9c268f626aea08a756abe7b726b05f701cb08222312ccfd6710a26",
 942         "cdf1cc0effe26ecc0c13758f7b4a48e000615df241284185c39eb05d355bb9c8",
 943         "2c9fdbc0c90bdd87612ee8455474f9044850241dc105b1e8b94b8ddf5fac9148",
 944         "dd095fc859b336c30a52548b3dc59fcc0d1be8616ebcf3368fad23107db2d736"
 945 };
 946
 947 const char *RIPEMD160_TestOutput[MDTESTCOUNT] = {
 948         "9c1185a5c5e9fc54612808977ee8f548b2258d31",
 949         "0bdc9d2d256b3ee9daae347be6f4dc835a467ffe",
 950         "8eb208f7e05d987a9b044a8e98c6b087f15a0bfc",
 951         "5d0689ef49d2fae572b881b123a85ffa21595f36",
 952         "f71c27109c692c1b56bbdceb5b9d2865b3708dbc",
 953         "b0e20b6e3116640286ed3a87a5713079b21f5189",
 954         "9b752e45573d4b39f4dbd3323cab82bf63326bfb",
 955         "5feb69c6bf7c29d95715ad55f57d8ac5b2b7dd32"
 956 };
 957
 958 const char *SKEIN256_TestOutput[MDTESTCOUNT] = {
 959         "c8877087da56e072870daa843f176e9453115929094c3a40c463a196c29bf7ba",
 960         "7fba44ff1a31d71a0c1f82e6e82fb5e9ac6c92a39c9185b9951fed82d82fe635",
 961         "258bdec343b9fde1639221a5ae0144a96e552e5288753c5fec76c05fc2fc1870",
 962         "4d2ce0062b5eb3a4db95bc1117dd8aa014f6cd50fdc8e64f31f7d41f9231e488",
 963         "46d8440685461b00e3ddb891b2ecc6855287d2bd8834a95fb1c1708b00ea5e82",
 964         "7c5eb606389556b33d34eb2536459528dc0af97adbcd0ce273aeb650f598d4b2",
 965         "4def7a7e5464a140ae9c3a80279fbebce4bd00f9faad819ab7e001512f67a10d",
 966         "d9c017dbe355f318d036469eb9b5fbe129fc2b5786a9dc6746a516eab6fe0126"
 967 };
 968
 969 const char *SKEIN512_TestOutput[MDTESTCOUNT] = {
 970         "bc5b4c50925519c290cc634277ae3d6257212395cba733bbad37a4af0fa06af41fca7903d06564fea7a2d3730dbdb80c1f85562dfcc070334ea4d1d9e72cba7a",
 971         "b1cd8d33f61b3737adfd59bb13ad82f4a9548e92f22956a8976cca3fdb7fee4fe91698146c4197cec85d38b83c5d93bdba92c01fd9a53870d0c7f967bc62bdce",
 972         "8f5dd9ec798152668e35129496b029a960c9a9b88662f7f9482f110b31f9f93893ecfb25c009baad9e46737197d5630379816a886aa05526d3a70df272d96e75",
 973         "15b73c158ffb875fed4d72801ded0794c720b121c0c78edf45f900937e6933d9e21a3a984206933d504b5dbb2368000411477ee1b204c986068df77886542fcc",
 974         "23793ad900ef12f9165c8080da6fdfd2c8354a2929b8aadf83aa82a3c6470342f57cf8c035ec0d97429b626c4d94f28632c8f5134fd367dca5cf293d2ec13f8c",
 975         "0c6bed927e022f5ddcf81877d42e5f75798a9f8fd3ede3d83baac0a2f364b082e036c11af35fe478745459dd8f5c0b73efe3c56ba5bb2009208d5a29cc6e469c",
 976         "2ca9fcffb3456f297d1b5f407014ecb856f0baac8eb540f534b1f187196f21e88f31103128c2f03fcc9857d7a58eb66f9525e2302d88833ee069295537a434ce",
 977         "1131f2aaa0e97126c9314f9f968cc827259bbfabced2943bb8c9274448998fb3b78738b4580dd500c76105fd3c03e465e1414f2c29664286b1f79d3e51128125"
 978 };
 979
 980 const char *SKEIN1024_TestOutput[MDTESTCOUNT] = {
 981         "0fff9563bb3279289227ac77d319b6fff8d7e9f09da1247b72a0a265cd6d2a62645ad547ed8193db48cff847c06494a03f55666d3b47eb4c20456c9373c86297d630d5578ebd34cb40991578f9f52b18003efa35d3da6553ff35db91b81ab890bec1b189b7f52cb2a783ebb7d823d725b0b4a71f6824e88f68f982eefc6d19c6",
 982         "6ab4c4ba9814a3d976ec8bffa7fcc638ceba0544a97b3c98411323ffd2dc936315d13dc93c13c4e88cda6f5bac6f2558b2d8694d3b6143e40d644ae43ca940685cb37f809d3d0550c56cba8036dee729a4f8fb960732e59e64d57f7f7710f8670963cdcdc95b41daab4855fcf8b6762a64b173ee61343a2c7689af1d293eba97",
 983         "35a599a0f91abcdb4cb73c19b8cb8d947742d82c309137a7caed29e8e0a2ca7a9ff9a90c34c1908cc7e7fd99bb15032fb86e76df21b72628399b5f7c3cc209d7bb31c99cd4e19465622a049afbb87c03b5ce3888d17e6e667279ec0aa9b3e2712624c01b5f5bbe1a564220bdcf6990af0c2539019f313fdd7406cca3892a1f1f",
 984         "ea891f5268acd0fac97467fc1aa89d1ce8681a9992a42540e53babee861483110c2d16f49e73bac27653ff173003e40cfb08516cd34262e6af95a5d8645c9c1abb3e813604d508b8511b30f9a5c1b352aa0791c7d2f27b2706dccea54bc7de6555b5202351751c3299f97c09cf89c40f67187e2521c0fad82b30edbb224f0458",
 985         "f23d95c2a25fbcd0e797cd058fec39d3c52d2b5afd7a9af1df934e63257d1d3dcf3246e7329c0f1104c1e51e3d22e300507b0c3b9f985bb1f645ef49835080536becf83788e17fed09c9982ba65c3cb7ffe6a5f745b911c506962adf226e435c42f6f6bc08d288f9c810e807e3216ef444f3db22744441deefa4900982a1371f",
 986         "cf3889e8a8d11bfd3938055d7d061437962bc5eac8ae83b1b71c94be201b8cf657fdbfc38674997a008c0c903f56a23feb3ae30e012377f1cfa080a9ca7fe8b96138662653fb3335c7d06595bf8baf65e215307532094cfdfa056bd8052ab792a3944a2adaa47b30335b8badb8fe9eb94fe329cdca04e58bbc530f0af709f469",
 987         "cf21a613620e6c119eca31fdfaad449a8e02f95ca256c21d2a105f8e4157048f9fe1e897893ea18b64e0e37cb07d5ac947f27ba544caf7cbc1ad094e675aed77a366270f7eb7f46543bccfa61c526fd628408058ed00ed566ac35a9761d002e629c4fb0d430b2f4ad016fcc49c44d2981c4002da0eecc42144160e2eaea4855a",
 988         "e6799b78db54085a2be7ff4c8007f147fa88d326abab30be0560b953396d8802feee9a15419b48a467574e9283be15685ca8a079ee52b27166b64dd70b124b1d4e4f6aca37224c3f2685e67e67baef9f94b905698adc794a09672aba977a61b20966912acdb08c21a2c37001785355dc884751a21f848ab36e590331ff938138"
 989 };
 990
 991 static void
 992 MDTestSuite(const Algorithm_t *alg)
 993 {
 994         int i;
 995         char buffer[HEX_DIGEST_LENGTH];
 996
 997         printf("%s test suite:\n", alg->name);
 998         for (i = 0; i < MDTESTCOUNT; i++) {
 999                 (*alg->Data)(MDTestInput[i], strlen(MDTestInput[i]), buffer);
1000                 printf("%s (\"%s\") = %s", alg->name, MDTestInput[i], buffer);
1001                 if (strcmp(buffer, (*alg->TestOutput)[i]) == 0) {
1002                         printf(" - verified correct\n");
1003                 } else {
1004                         printf(" - INCORRECT RESULT!\n");
1005                         failed = true;
1006                 }
1007         }
1008 }
1009
1010 static void
1011 usage(const Algorithm_t *alg)
1012 {
1013
1014         switch (mode) {
1015         case mode_gnu:
1016                 fprintf(stderr, "usage: %ssum [-bctwz] [files ...]\n", alg->progname);
1017                 break;
1018         case mode_perl:
1019                 fprintf(stderr, "usage: shasum [-0bchqstUvw] [-a alg] [files ...]\n");
1020                 break;
1021         default:
1022                 fprintf(stderr, "usage: %s [-pqrtx] [-c string] [-s string] [files ...]\n",
1023                     alg->progname);
1024         }
1025         exit(1);
1026 }
1027
1028 static void
1029 version(void)
1030 {
1031         if (mode == mode_gnu)
1032                 printf("%s (FreeBSD) ", progname);
1033         printf("%d.%d\n",
1034             __FreeBSD_version / 100000,
1035             (__FreeBSD_version / 1000) % 100);
1036         exit(0);
1037 }