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