e375fe33 |
1 | /* -*-c-*- |
2 | * |
d3187d77 |
3 | * $Id: hashsum.c,v 1.7 2001/02/21 20:03:22 mdw Exp $ |
e375fe33 |
4 | * |
5 | * Hash files using some secure hash function |
6 | * |
7 | * (c) 2000 Straylight/Edgeware |
8 | */ |
9 | |
10 | /*----- Licensing notice --------------------------------------------------* |
11 | * |
12 | * This file is part of Catacomb. |
13 | * |
14 | * Catacomb is free software; you can redistribute it and/or modify |
15 | * it under the terms of the GNU Library General Public License as |
16 | * published by the Free Software Foundation; either version 2 of the |
17 | * License, or (at your option) any later version. |
18 | * |
19 | * Catacomb is distributed in the hope that it will be useful, |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
22 | * GNU Library General Public License for more details. |
23 | * |
24 | * You should have received a copy of the GNU Library General Public |
25 | * License along with Catacomb; if not, write to the Free |
26 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, |
27 | * MA 02111-1307, USA. |
28 | */ |
29 | |
30 | /*----- Revision history --------------------------------------------------* |
31 | * |
32 | * $Log: hashsum.c,v $ |
d3187d77 |
33 | * Revision 1.7 2001/02/21 20:03:22 mdw |
34 | * Added support for MD2 hash function. |
35 | * |
87ffb3ae |
36 | * Revision 1.6 2001/01/25 21:40:14 mdw |
37 | * Support for new SHA variants added. |
38 | * |
16efd15b |
39 | * Revision 1.5 2000/12/06 20:33:27 mdw |
40 | * Make flags be macros rather than enumerations, to ensure that they're |
41 | * unsigned. |
42 | * |
d470270a |
43 | * Revision 1.4 2000/08/04 23:23:44 mdw |
44 | * Various <ctype.h> fixes. |
45 | * |
12902a5c |
46 | * Revision 1.3 2000/07/29 17:02:43 mdw |
47 | * (checkhash): Be pettier about spaces between the hash and filename, for |
48 | * compatiblity with `md5sum'. |
49 | * |
5af0f9cb |
50 | * Revision 1.2 2000/07/15 21:14:05 mdw |
51 | * Missed `-e' out of the usage string. |
52 | * |
e375fe33 |
53 | * Revision 1.1 2000/07/15 20:52:34 mdw |
54 | * Useful replacement for `md5sum' with support for many different hash |
55 | * functions and for reading filename lists from `find'. |
56 | * |
57 | */ |
58 | |
59 | /*----- Header files ------------------------------------------------------*/ |
60 | |
61 | #include "config.h" |
62 | |
63 | #include <ctype.h> |
64 | #include <errno.h> |
65 | #include <stdio.h> |
66 | #include <stdlib.h> |
67 | #include <string.h> |
68 | |
69 | #include <mLib/alloc.h> |
70 | #include <mLib/dstr.h> |
71 | #include <mLib/mdwopt.h> |
72 | #include <mLib/quis.h> |
73 | #include <mLib/report.h> |
74 | #include <mLib/sub.h> |
75 | #include <mLib/str.h> |
76 | |
77 | #include "ghash.h" |
78 | |
d3187d77 |
79 | #include "md2.h" |
e375fe33 |
80 | #include "md4.h" |
81 | #include "md5.h" |
82 | #include "rmd128.h" |
83 | #include "rmd160.h" |
84 | #include "rmd256.h" |
85 | #include "rmd320.h" |
86 | #include "sha.h" |
87ffb3ae |
87 | #include "sha256.h" |
88 | #include "sha384.h" |
89 | #include "sha512.h" |
e375fe33 |
90 | #include "tiger.h" |
91 | |
92 | /*----- Static variables --------------------------------------------------*/ |
93 | |
94 | static const gchash *hashtab[] = { |
d3187d77 |
95 | &md5, &md4, &md2, |
87ffb3ae |
96 | &sha, &sha256, &sha384, &sha512, |
97 | &rmd128, &rmd160, &rmd256, &rmd320, |
98 | &tiger, |
e375fe33 |
99 | 0 |
100 | }; |
101 | |
16efd15b |
102 | #define f_binary 1u |
103 | #define f_bogus 2u |
104 | #define f_verbose 4u |
105 | #define f_check 8u |
106 | #define f_files 16u |
107 | #define f_raw 32u |
108 | #define f_oddhash 64u |
109 | #define f_escape 128u |
e375fe33 |
110 | |
111 | /*----- Support functions -------------------------------------------------*/ |
112 | |
113 | /* --- @fhash@ --- * |
114 | * |
115 | * Arguments: @const char *file@ = file name to be hashed (null for stdin) |
116 | * @unsigned f@ = flags to set |
117 | * @const gchash *gch@ = pointer to hash function to use |
118 | * @void *buf@ = pointer to hash output buffer |
119 | * |
120 | * Returns: Zero if it worked, nonzero on error. |
121 | * |
122 | * Use: Hashes a file. |
123 | */ |
124 | |
125 | static int fhash(const char *file, unsigned f, const gchash *gch, void *buf) |
126 | { |
127 | FILE *fp; |
128 | char fbuf[BUFSIZ]; |
129 | size_t sz; |
130 | ghash *h; |
131 | int e; |
132 | |
133 | if (!file) |
134 | fp = stdin; |
135 | else if ((fp = fopen(file, f & f_binary ? "rb" : "r")) == 0) |
136 | return (-1); |
137 | |
138 | h = gch->init(); |
139 | while ((sz = fread(fbuf, 1, sizeof(fbuf), fp)) > 0) |
140 | h->ops->hash(h, fbuf, sz); |
141 | h->ops->done(h, buf); |
142 | h->ops->destroy(h); |
143 | e = ferror(fp); |
144 | if (file) |
145 | fclose(fp); |
146 | return (e ? -1 : 0); |
147 | } |
148 | |
149 | /* --- @puthex@ --- * |
150 | * |
151 | * Arguments: @const octet *buf@ = pointer to a binary buffer |
152 | * @size_t sz@ = size of the buffer |
153 | * @FILE *fp@ = pointer to output file handle |
154 | * |
155 | * Returns: --- |
156 | * |
157 | * Use: Writes a hex dump of a block of memory. |
158 | */ |
159 | |
160 | static void puthex(const octet *buf, size_t sz, FILE *fp) |
161 | { |
162 | while (sz) { |
163 | fprintf(fp, "%02x", *buf++); |
164 | sz--; |
165 | } |
166 | } |
167 | |
168 | /* --- @gethex@ --- * |
169 | * |
170 | * Arguments: @const char *p@ = pointer to input string |
171 | * @octet *q@ = pointer to output buffer |
172 | * @size_t sz@ = size of the output buffer |
173 | * @char **pp@ = where to put the end pointer |
174 | * |
175 | * Returns: The number of bytes written to the buffer. |
176 | * |
177 | * Use: Reads hex dumps from the input string. |
178 | */ |
179 | |
180 | static size_t gethex(const char *p, octet *q, size_t sz, char **pp) |
181 | { |
182 | size_t i = 0; |
183 | while (sz > 0 && |
184 | isxdigit((unsigned char)p[0]) && |
185 | isxdigit((unsigned char)p[1])) { |
186 | char buf[3]; |
187 | buf[0] = p[0]; |
188 | buf[1] = p[1]; |
189 | buf[2] = 0; |
190 | *q++ = strtoul(buf, 0, 16); |
191 | sz--; |
192 | p += 2; |
193 | i++; |
194 | } |
195 | if (pp) |
196 | *pp = (char *)p; |
197 | return (i); |
198 | } |
199 | |
200 | /* --- @gethash@ --- * |
201 | * |
202 | * Arguments: @const char *name@ = pointer to name string |
203 | * |
204 | * Returns: Pointer to appropriate hash class. |
205 | * |
206 | * Use: Chooses a hash function by name. |
207 | */ |
208 | |
209 | static const gchash *gethash(const char *name) |
210 | { |
211 | const gchash **g, *gg = 0; |
212 | size_t sz = strlen(name); |
213 | for (g = hashtab; *g; g++) { |
214 | if (strncmp(name, (*g)->name, sz) == 0) { |
215 | if ((*g)->name[sz] == 0) { |
216 | gg = *g; |
217 | break; |
218 | } else if (gg) |
219 | return (0); |
220 | else |
221 | gg = *g; |
222 | } |
223 | } |
224 | return (gg); |
225 | } |
226 | |
227 | /* --- @getstring@ --- * |
228 | * |
229 | * Arguments: @FILE *fp@ = stream from which to read |
230 | * @const char *p@ = string to read from instead |
231 | * @dstr *d@ = destination string |
232 | * @unsigned raw@ = raw or cooked read |
233 | * |
234 | * Returns: Zero if OK, nonzero on end-of-file. |
235 | * |
236 | * Use: Reads a filename (or something similar) from a stream. |
237 | */ |
238 | |
239 | static int getstring(FILE *fp, const char *p, dstr *d, unsigned raw) |
240 | { |
241 | int ch; |
242 | int q = 0; |
243 | |
244 | /* --- Raw: just read exactly what's written up to a null byte --- */ |
245 | |
d470270a |
246 | #define NEXTCH (fp ? getc(fp) : (unsigned char)*p++) |
e375fe33 |
247 | #define EOFCH (fp ? EOF : 0) |
248 | |
249 | if (raw) { |
250 | if ((ch = NEXTCH) == EOFCH) |
251 | return (EOF); |
252 | for (;;) { |
253 | if (!ch) |
254 | break; |
255 | DPUTC(d, ch); |
256 | if ((ch = NEXTCH) == EOFCH) |
257 | break; |
258 | } |
259 | DPUTZ(d); |
260 | return (0); |
261 | } |
262 | |
263 | /* --- Skip as far as whitespace --- * |
264 | * |
265 | * Also skip past comments. |
266 | */ |
267 | |
268 | again: |
269 | ch = NEXTCH; |
d470270a |
270 | while (isspace(ch)) |
e375fe33 |
271 | ch = NEXTCH; |
272 | if (ch == '#') { |
273 | do ch = NEXTCH; while (ch != '\n' && ch != EOFCH); |
274 | goto again; |
275 | } |
276 | if (ch == EOFCH) |
277 | return (EOF); |
278 | |
279 | /* --- If the character is a quote then read a quoted string --- */ |
280 | |
281 | switch (ch) { |
282 | case '`': |
283 | ch = '\''; |
284 | case '\'': |
285 | case '\"': |
286 | q = ch; |
287 | ch = NEXTCH; |
288 | break; |
289 | } |
290 | |
291 | /* --- Now read all sorts of interesting things --- */ |
292 | |
293 | for (;;) { |
294 | |
295 | /* --- Handle an escaped thing --- */ |
296 | |
297 | if (ch == '\\') { |
298 | ch = NEXTCH; |
299 | if (ch == EOFCH) |
300 | break; |
301 | switch (ch) { |
302 | case 'a': ch = '\a'; break; |
303 | case 'b': ch = '\b'; break; |
304 | case 'f': ch = '\f'; break; |
305 | case 'n': ch = '\n'; break; |
306 | case 'r': ch = '\r'; break; |
307 | case 't': ch = '\t'; break; |
308 | case 'v': ch = '\v'; break; |
309 | } |
310 | DPUTC(d, ch); |
311 | ch = NEXTCH; |
312 | continue; |
313 | } |
314 | |
315 | /* --- If it's a quote or some other end marker then stop --- */ |
316 | |
317 | if (ch == q) |
318 | break; |
d470270a |
319 | if (!q && isspace(ch)) |
e375fe33 |
320 | break; |
321 | |
322 | /* --- Otherwise contribute and continue --- */ |
323 | |
324 | DPUTC(d, ch); |
325 | if ((ch = NEXTCH) == EOFCH) |
326 | break; |
327 | } |
328 | |
329 | /* --- Done --- */ |
330 | |
331 | DPUTZ(d); |
332 | return (0); |
333 | |
334 | #undef NEXTCH |
335 | #undef EOFCH |
336 | } |
337 | |
338 | /* --- @putstring@ --- * |
339 | * |
340 | * Arguments: @FILE *fp@ = stream to write on |
341 | * @const char *p@ = pointer to text |
342 | * @unsigned raw@ = whether the string is to be written raw |
343 | * |
344 | * Returns: --- |
345 | * |
346 | * Use: Emits a string to a stream. |
347 | */ |
348 | |
349 | static void putstring(FILE *fp, const char *p, unsigned raw) |
350 | { |
351 | size_t sz = strlen(p); |
352 | unsigned qq; |
353 | const char *q; |
354 | |
355 | /* --- Just write the string null terminated if raw --- */ |
356 | |
357 | if (raw) { |
358 | fwrite(p, 1, sz + 1, fp); |
359 | return; |
360 | } |
361 | |
362 | /* --- Check for any dodgy characters --- */ |
363 | |
364 | qq = 0; |
365 | for (q = p; *q; q++) { |
366 | if (isspace((unsigned char)*q)) { |
367 | qq = '\"'; |
368 | break; |
369 | } |
370 | } |
371 | |
372 | if (qq) |
373 | putc(qq, fp); |
374 | |
375 | /* --- Emit the string --- */ |
376 | |
377 | for (q = p; *q; q++) { |
378 | switch (*q) { |
379 | case '\a': fputc('\\', fp); fputc('a', fp); break; |
380 | case '\b': fputc('\\', fp); fputc('b', fp); break; |
381 | case '\f': fputc('\\', fp); fputc('f', fp); break; |
382 | case '\n': fputc('\\', fp); fputc('n', fp); break; |
383 | case '\r': fputc('\\', fp); fputc('r', fp); break; |
384 | case '\t': fputc('\\', fp); fputc('t', fp); break; |
385 | case '\v': fputc('\\', fp); fputc('v', fp); break; |
386 | case '`': fputc('\\', fp); fputc('`', fp); break; |
387 | case '\'': fputc('\\', fp); fputc('\'', fp); break; |
388 | case '\"': fputc('\\', fp); fputc('\"', fp); break; |
389 | case '#': fputc('\\', fp); fputc('#', fp); break; |
390 | default: |
391 | putc(*q, fp); |
392 | break; |
393 | } |
394 | } |
395 | |
396 | /* --- Done --- */ |
397 | |
398 | if (qq) |
399 | putc(qq, fp); |
400 | } |
401 | |
402 | /*----- Guts --------------------------------------------------------------*/ |
403 | |
404 | static int checkhash(const char *file, unsigned f, const gchash *gch) |
405 | { |
406 | int rc; |
407 | FILE *fp; |
408 | dstr d = DSTR_INIT; |
409 | dstr dd = DSTR_INIT; |
410 | unsigned long n = 0, nfail = 0; |
411 | octet *buf = xmalloc(2 * gch->hashsz); |
412 | |
413 | if (!file) |
414 | fp = stdin; |
415 | else if ((fp = fopen(file, f & f_raw ? "r" : "rb")) == 0) { |
416 | moan("couldn't open `%s': %s", file, strerror(errno)); |
417 | return (EXIT_FAILURE); |
418 | } |
419 | |
420 | while (DRESET(&d), dstr_putline(&d, fp) != EOF) { |
421 | char *p = d.buf; |
422 | char *q; |
423 | unsigned ff = f; |
424 | |
425 | /* --- Handle a directive --- */ |
426 | |
427 | if (*p == '#') { |
428 | p++; |
429 | if ((q = str_getword(&p)) == 0) |
430 | continue; |
431 | if (strcmp(q, "hash") == 0) { |
432 | const gchash *g; |
433 | if ((q = str_getword(&p)) == 0) |
434 | continue; |
435 | if ((g = gethash(q)) == 0) |
436 | continue; |
437 | gch = g; |
438 | xfree(buf); |
439 | buf = xmalloc(2 * gch->hashsz); |
440 | } else if (strcmp(q, "escape") == 0) |
441 | f |= f_escape; |
442 | continue; |
443 | } |
444 | |
445 | /* --- Otherwise it's a hex thing --- */ |
446 | |
12902a5c |
447 | q = p; |
448 | while (*p && *p != ' ') |
449 | p++; |
450 | if (!*p) |
e375fe33 |
451 | continue; |
12902a5c |
452 | *p++ = 0; |
e375fe33 |
453 | if (gethex(q, buf, gch->hashsz, 0) < gch->hashsz) |
454 | continue; |
12902a5c |
455 | if (*p == '*') |
e375fe33 |
456 | ff |= f_binary; |
12902a5c |
457 | else if (*p != ' ') |
e375fe33 |
458 | continue; |
12902a5c |
459 | p++; |
e375fe33 |
460 | |
461 | if (f & f_escape) { |
462 | DRESET(&dd); |
463 | getstring(0, p, &dd, 0); |
464 | p = dd.buf; |
465 | } |
466 | |
467 | if (fhash(p, ff, gch, buf + gch->hashsz)) { |
468 | moan("couldn't read `%s': %s", p, strerror(errno)); |
469 | rc = EXIT_FAILURE; |
470 | continue; |
471 | } |
472 | if (memcmp(buf, buf + gch->hashsz, gch->hashsz) != 0) { |
473 | if (ff & f_verbose) |
474 | fprintf(stderr, "FAIL %s\n", p); |
475 | else |
476 | moan("%s check failed for `%s'", gch->name, p); |
477 | nfail++; |
478 | rc = EXIT_FAILURE; |
479 | } else { |
480 | if (ff & f_verbose) |
481 | fprintf(stderr, "OK %s\n", p); |
482 | } |
483 | n++; |
484 | } |
485 | |
486 | dstr_destroy(&d); |
487 | dstr_destroy(&dd); |
488 | xfree(buf); |
489 | if ((f & f_verbose) && nfail) |
490 | moan("%lu of %lu file(s) failed %s check", nfail, n, gch->name); |
491 | else if (!n) |
492 | moan("no files checked"); |
493 | return (0); |
494 | } |
495 | |
496 | static int dohash(const char *file, unsigned f, const gchash *gch) |
497 | { |
498 | int rc = 0; |
499 | octet *p = xmalloc(gch->hashsz); |
500 | |
501 | if (fhash(file, f, gch, p)) { |
502 | moan("couldn't read `%s': %s", file ? file : "<stdin>", strerror(errno)); |
503 | rc = EXIT_FAILURE; |
504 | } else { |
505 | puthex(p, gch->hashsz, stdout); |
506 | if (file) { |
507 | fputc(' ', stdout); |
508 | fputc(f & f_binary ? '*' : ' ', stdout); |
509 | if (f & f_escape) |
510 | putstring(stdout, file, 0); |
511 | else |
512 | fputs(file, stdout); |
513 | } |
514 | fputc('\n', stdout); |
515 | } |
516 | |
517 | xfree(p); |
518 | return (rc); |
519 | } |
520 | |
12902a5c |
521 | static int dofile(const char *file, unsigned f, const gchash *gch) |
522 | { |
523 | return (f & f_check ? checkhash : dohash)(file, f, gch); |
524 | } |
525 | |
e375fe33 |
526 | static int hashfiles(const char *file, unsigned f, const gchash *gch) |
527 | { |
528 | FILE *fp; |
529 | dstr d = DSTR_INIT; |
530 | int rc = 0; |
531 | int rrc; |
532 | |
533 | if (!file) |
534 | fp = stdin; |
535 | else if ((fp = fopen(file, f & f_raw ? "r" : "rb")) == 0) { |
536 | moan("couldn't open `%s': %s", file, strerror(errno)); |
537 | return (EXIT_FAILURE); |
538 | } |
539 | |
540 | for (;;) { |
541 | DRESET(&d); |
542 | if (getstring(fp, 0, &d, f & f_raw)) |
543 | break; |
12902a5c |
544 | if ((rrc = dofile(d.buf, f, gch)) != 0) |
e375fe33 |
545 | rc = rrc; |
546 | } |
547 | |
548 | return (rc); |
549 | } |
550 | |
551 | static int hashsum(const char *file, unsigned f, const gchash *gch) |
552 | { |
12902a5c |
553 | return (f & f_files ? hashfiles : dofile)(file, f, gch); |
e375fe33 |
554 | } |
555 | |
556 | /*----- Main driver -------------------------------------------------------*/ |
557 | |
558 | static void version(FILE *fp) |
559 | { |
560 | pquis(fp, "$, Catacomb version " VERSION "\n"); |
561 | } |
562 | |
563 | static void usage(FILE *fp) |
564 | { |
5af0f9cb |
565 | pquis(fp, "Usage: $ [-f0ebcv] [-a algorithm] [files...]\n"); |
e375fe33 |
566 | } |
567 | |
568 | static void help(FILE *fp, const gchash *gch) |
569 | { |
570 | version(fp); |
571 | fputc('\n', fp); |
572 | usage(fp); |
573 | pquis(fp, "\n\ |
574 | Generates or checks message digests on files. Options available:\n\ |
575 | \n\ |
576 | -h, --help Display this help message.\n\ |
577 | -V, --version Display program's version number.\n\ |
578 | -u, --usage Display a terse usage message.\n\ |
579 | \n\ |
580 | -a, --algorithm=ALG Use the message digest algorithm ALG.\n\ |
581 | \n\ |
582 | -f, --files Read a list of file names from standard input.\n\ |
583 | -0, --null File names are null terminated, not plain text.\n\ |
584 | \n\ |
585 | -e, --escape Escape funny characters in filenames.\n\ |
586 | -c, --check Check message digests rather than emitting them.\n\ |
587 | -b, --binary When reading files, treat them as binary.\n\ |
588 | -v, --verbose Be verbose when checking digests.\n\ |
589 | \n\ |
590 | For a list of supported message digest algorithms, type `$ --list'.\n\ |
591 | "); |
592 | if (gch) |
593 | fprintf(fp, "The default message digest algorithm is %s.\n", gch->name); |
594 | } |
595 | |
596 | int main(int argc, char *argv[]) |
597 | { |
598 | unsigned f = 0; |
599 | const gchash *gch = 0; |
600 | int rc; |
601 | |
602 | /* --- Initialization --- */ |
603 | |
604 | ego(argv[0]); |
605 | sub_init(); |
606 | |
607 | /* --- Choose a hash function from the name --- */ |
608 | |
609 | { |
610 | char *q = xstrdup(QUIS); |
611 | size_t len = strlen(q); |
612 | if (len > 3 && strcmp(q + len - 3, "sum") == 0) { |
613 | q[len - 3] = 0; |
614 | gch = gethash(q); |
615 | } |
616 | if (!gch) |
617 | gch = hashtab[0]; |
618 | xfree(q); |
619 | } |
620 | |
621 | /* --- Read options --- */ |
622 | |
623 | for (;;) { |
624 | static struct option opts[] = { |
625 | { "help", 0, 0, 'h' }, |
626 | { "verbose", 0, 0, 'V' }, |
627 | { "usage", 0, 0, 'u' }, |
628 | |
629 | { "algorithm", OPTF_ARGREQ, 0, 'a' }, |
630 | { "hash", OPTF_ARGREQ, 0, 'a' }, |
631 | { "list", 0, 0, 'l' }, |
632 | |
633 | { "files", 0, 0, 'f' }, |
634 | { "find", 0, 0, 'f' }, |
635 | { "null", 0, 0, '0' }, |
636 | |
637 | { "escape", 0, 0, 'e' }, |
638 | { "check", 0, 0, 'c' }, |
639 | { "binary", 0, 0, 'b' }, |
640 | { "verbose", 0, 0, 'v' }, |
641 | |
642 | { 0, 0, 0, 0 } |
643 | }; |
644 | int i = mdwopt(argc, argv, "hVu a:l f0 ecbv", opts, 0, 0, 0); |
645 | if (i < 0) |
646 | break; |
647 | |
648 | switch (i) { |
649 | case 'h': |
650 | help(stdout, gch); |
651 | exit(0); |
652 | case 'V': |
653 | version(stdout); |
654 | exit(0); |
655 | case 'u': |
656 | usage(stdout); |
657 | exit(0); |
658 | case 'a': |
659 | if ((gch = gethash(optarg)) == 0) |
660 | die(EXIT_FAILURE, "unknown hash algorithm `%s'", optarg); |
661 | f |= f_oddhash; |
662 | break; |
663 | case 'l': { |
664 | unsigned j; |
665 | for (j = 0; hashtab[j]; j++) { |
666 | if (j) |
667 | fputc(' ', stdout); |
668 | printf("%s", hashtab[j]->name); |
669 | } |
670 | fputc('\n', stdout); |
671 | exit(0); |
672 | } break; |
673 | case 'f': |
674 | f |= f_files; |
675 | break; |
676 | case '0': |
677 | f |= f_raw; |
678 | break; |
679 | case 'e': |
680 | f |= f_escape; |
681 | break; |
682 | case 'c': |
683 | f |= f_check; |
684 | break; |
685 | case 'b': |
686 | f |= f_binary; |
687 | break; |
688 | case 'v': |
689 | f |= f_verbose; |
690 | break; |
691 | default: |
692 | f |= f_bogus; |
693 | break; |
694 | } |
695 | } |
696 | |
697 | if (f & f_bogus) { |
698 | usage(stderr); |
699 | exit(EXIT_FAILURE); |
700 | } |
701 | argv += optind; |
702 | argc -= optind; |
703 | |
704 | /* --- Generate output --- */ |
705 | |
706 | if (!(f & f_check)) { |
707 | if (f & f_oddhash) |
708 | printf("#hash %s\n", gch->name); |
709 | if (f & f_escape) |
710 | fputs("#escape\n", stdout); |
711 | } |
712 | |
713 | if (argc) { |
714 | int i; |
715 | int rrc; |
716 | rc = 0; |
717 | for (i = 0; i < argc; i++) { |
718 | if ((rrc = hashsum(argv[i], f, gch)) != 0) |
719 | rc = rrc; |
720 | } |
721 | } else |
722 | rc = hashsum(0, f, gch); |
723 | |
724 | return (rc); |
725 | } |
726 | |
727 | /*----- That's all, folks -------------------------------------------------*/ |