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