e375fe33 |
1 | /* -*-c-*- |
2 | * |
5685a696 |
3 | * $Id$ |
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 | |
e375fe33 |
30 | /*----- Header files ------------------------------------------------------*/ |
31 | |
32 | #include "config.h" |
33 | |
5685a696 |
34 | #include <assert.h> |
e375fe33 |
35 | #include <ctype.h> |
36 | #include <errno.h> |
37 | #include <stdio.h> |
38 | #include <stdlib.h> |
39 | #include <string.h> |
40 | |
41 | #include <mLib/alloc.h> |
42 | #include <mLib/dstr.h> |
43 | #include <mLib/mdwopt.h> |
44 | #include <mLib/quis.h> |
45 | #include <mLib/report.h> |
46 | #include <mLib/sub.h> |
47 | #include <mLib/str.h> |
48 | |
5685a696 |
49 | #include <mLib/hex.h> |
50 | #include <mLib/base32.h> |
51 | #include <mLib/base64.h> |
52 | |
e375fe33 |
53 | #include "ghash.h" |
c65df279 |
54 | #include "cc.h" |
e375fe33 |
55 | |
e375fe33 |
56 | /*----- Static variables --------------------------------------------------*/ |
57 | |
16efd15b |
58 | #define f_binary 1u |
59 | #define f_bogus 2u |
60 | #define f_verbose 4u |
61 | #define f_check 8u |
62 | #define f_files 16u |
63 | #define f_raw 32u |
64 | #define f_oddhash 64u |
65 | #define f_escape 128u |
5685a696 |
66 | #define f_oddenc 256u |
67 | |
68 | /*----- Encoding and decoding ---------------------------------------------*/ |
69 | |
70 | /* --- Hex encoding --- */ |
71 | |
72 | static void puthex(const octet *buf, size_t sz, FILE *fp) |
73 | { |
74 | while (sz) { |
75 | fprintf(fp, "%02x", *buf++); |
76 | sz--; |
77 | } |
78 | } |
79 | |
80 | static size_t gethex(const char *p, octet *q, size_t sz, char **pp) |
81 | { |
82 | size_t i = 0; |
83 | while (sz > 0 && |
84 | isxdigit((unsigned char)p[0]) && |
85 | isxdigit((unsigned char)p[1])) { |
86 | char buf[3]; |
87 | buf[0] = p[0]; |
88 | buf[1] = p[1]; |
89 | buf[2] = 0; |
90 | *q++ = strtoul(buf, 0, 16); |
91 | sz--; |
92 | p += 2; |
93 | i++; |
94 | } |
95 | if (pp) |
96 | *pp = (char *)p; |
97 | return (i); |
98 | } |
99 | |
100 | /* --- Base64 encoding --- */ |
101 | |
102 | static void putb64(const octet *buf, size_t sz, FILE *fp) |
103 | { |
104 | base64_ctx b; |
105 | dstr d = DSTR_INIT; |
106 | |
107 | base64_init(&b); |
108 | b.indent = ""; |
109 | b.maxline = 0; |
110 | base64_encode(&b, buf, sz, &d); |
111 | base64_encode(&b, 0, 0, &d); |
112 | dstr_write(&d, fp); |
113 | dstr_destroy(&d); |
114 | } |
115 | |
116 | static size_t getb64(const char *p, octet *q, size_t sz, char **pp) |
117 | { |
118 | base64_ctx b; |
119 | dstr d = DSTR_INIT; |
120 | size_t n = strlen(p); |
121 | |
122 | base64_init(&b); |
123 | base64_decode(&b, p, n, &d); |
124 | if (pp) *pp = (/*unconst*/ char *)p + n; |
125 | base64_decode(&b, 0, 0, &d); |
126 | assert(d.len <= sz); |
127 | memcpy(q, d.buf, sz); |
128 | n = d.len; |
129 | dstr_destroy(&d); |
130 | return (n); |
131 | } |
132 | |
133 | /* --- Base32 encoding --- */ |
134 | |
135 | static void putb32(const octet *buf, size_t sz, FILE *fp) |
136 | { |
137 | base32_ctx b; |
138 | dstr d = DSTR_INIT; |
139 | |
140 | base32_init(&b); |
141 | b.indent = ""; |
142 | b.maxline = 0; |
143 | base32_encode(&b, buf, sz, &d); |
144 | base32_encode(&b, 0, 0, &d); |
145 | dstr_write(&d, fp); |
146 | dstr_destroy(&d); |
147 | } |
148 | |
149 | static size_t getb32(const char *p, octet *q, size_t sz, char **pp) |
150 | { |
151 | base32_ctx b; |
152 | dstr d = DSTR_INIT; |
153 | size_t n = strlen(p); |
154 | |
155 | base32_init(&b); |
156 | base32_decode(&b, p, n, &d); |
157 | if (pp) *pp = (/*unconst*/ char *)p + n; |
158 | base32_decode(&b, 0, 0, &d); |
159 | assert(d.len <= sz); |
160 | memcpy(q, d.buf, sz); |
161 | n = d.len; |
162 | dstr_destroy(&d); |
163 | return (n); |
164 | } |
165 | |
166 | /* --- Table --- */ |
167 | |
c65df279 |
168 | typedef struct encodeops { |
5685a696 |
169 | const char *name; |
170 | void (*put)(const octet *, size_t, FILE *); |
171 | size_t (*get)(const char *, octet *, size_t, char **); |
c65df279 |
172 | } encodeops; |
5685a696 |
173 | |
c65df279 |
174 | static const encodeops encodingtab[] = { |
5685a696 |
175 | { "hex", puthex, gethex }, |
176 | { "base64", putb64, getb64 }, |
177 | { "base32", putb32, getb32 }, |
178 | { 0, 0, 0 } |
179 | }; |
180 | |
c65df279 |
181 | static const encodeops *getencoding(const char *ename) |
5685a696 |
182 | { |
c65df279 |
183 | const encodeops *e; |
5685a696 |
184 | |
c65df279 |
185 | for (e = encodingtab; e->name; e++) { |
5685a696 |
186 | if (strcmp(ename, e->name) == 0) |
187 | return (e); |
188 | } |
189 | return (0); |
190 | } |
e375fe33 |
191 | |
192 | /*----- Support functions -------------------------------------------------*/ |
193 | |
194 | /* --- @fhash@ --- * |
195 | * |
196 | * Arguments: @const char *file@ = file name to be hashed (null for stdin) |
197 | * @unsigned f@ = flags to set |
198 | * @const gchash *gch@ = pointer to hash function to use |
199 | * @void *buf@ = pointer to hash output buffer |
200 | * |
201 | * Returns: Zero if it worked, nonzero on error. |
202 | * |
203 | * Use: Hashes a file. |
204 | */ |
205 | |
206 | static int fhash(const char *file, unsigned f, const gchash *gch, void *buf) |
207 | { |
208 | FILE *fp; |
209 | char fbuf[BUFSIZ]; |
210 | size_t sz; |
211 | ghash *h; |
212 | int e; |
213 | |
214 | if (!file) |
215 | fp = stdin; |
216 | else if ((fp = fopen(file, f & f_binary ? "rb" : "r")) == 0) |
217 | return (-1); |
218 | |
b817bfc6 |
219 | h = GH_INIT(gch); |
e375fe33 |
220 | while ((sz = fread(fbuf, 1, sizeof(fbuf), fp)) > 0) |
b817bfc6 |
221 | GH_HASH(h, fbuf, sz); |
222 | GH_DONE(h, buf); |
223 | GH_DESTROY(h); |
e375fe33 |
224 | e = ferror(fp); |
225 | if (file) |
226 | fclose(fp); |
227 | return (e ? -1 : 0); |
228 | } |
229 | |
e375fe33 |
230 | /* --- @gethash@ --- * |
231 | * |
232 | * Arguments: @const char *name@ = pointer to name string |
233 | * |
234 | * Returns: Pointer to appropriate hash class. |
235 | * |
236 | * Use: Chooses a hash function by name. |
237 | */ |
238 | |
239 | static const gchash *gethash(const char *name) |
240 | { |
e9026a0a |
241 | const gchash *const *g, *gg = 0; |
e375fe33 |
242 | size_t sz = strlen(name); |
e9026a0a |
243 | for (g = ghashtab; *g; g++) { |
e375fe33 |
244 | if (strncmp(name, (*g)->name, sz) == 0) { |
245 | if ((*g)->name[sz] == 0) { |
246 | gg = *g; |
247 | break; |
248 | } else if (gg) |
249 | return (0); |
250 | else |
251 | gg = *g; |
252 | } |
253 | } |
254 | return (gg); |
255 | } |
256 | |
257 | /* --- @getstring@ --- * |
258 | * |
259 | * Arguments: @FILE *fp@ = stream from which to read |
260 | * @const char *p@ = string to read from instead |
261 | * @dstr *d@ = destination string |
262 | * @unsigned raw@ = raw or cooked read |
263 | * |
264 | * Returns: Zero if OK, nonzero on end-of-file. |
265 | * |
266 | * Use: Reads a filename (or something similar) from a stream. |
267 | */ |
268 | |
269 | static int getstring(FILE *fp, const char *p, dstr *d, unsigned raw) |
270 | { |
271 | int ch; |
272 | int q = 0; |
273 | |
274 | /* --- Raw: just read exactly what's written up to a null byte --- */ |
275 | |
d470270a |
276 | #define NEXTCH (fp ? getc(fp) : (unsigned char)*p++) |
e375fe33 |
277 | #define EOFCH (fp ? EOF : 0) |
278 | |
279 | if (raw) { |
280 | if ((ch = NEXTCH) == EOFCH) |
281 | return (EOF); |
282 | for (;;) { |
283 | if (!ch) |
284 | break; |
285 | DPUTC(d, ch); |
286 | if ((ch = NEXTCH) == EOFCH) |
287 | break; |
288 | } |
289 | DPUTZ(d); |
290 | return (0); |
291 | } |
292 | |
293 | /* --- Skip as far as whitespace --- * |
294 | * |
295 | * Also skip past comments. |
296 | */ |
297 | |
298 | again: |
299 | ch = NEXTCH; |
d470270a |
300 | while (isspace(ch)) |
e375fe33 |
301 | ch = NEXTCH; |
302 | if (ch == '#') { |
303 | do ch = NEXTCH; while (ch != '\n' && ch != EOFCH); |
304 | goto again; |
305 | } |
306 | if (ch == EOFCH) |
307 | return (EOF); |
308 | |
309 | /* --- If the character is a quote then read a quoted string --- */ |
310 | |
311 | switch (ch) { |
312 | case '`': |
313 | ch = '\''; |
314 | case '\'': |
315 | case '\"': |
316 | q = ch; |
317 | ch = NEXTCH; |
318 | break; |
319 | } |
320 | |
321 | /* --- Now read all sorts of interesting things --- */ |
322 | |
323 | for (;;) { |
324 | |
325 | /* --- Handle an escaped thing --- */ |
326 | |
327 | if (ch == '\\') { |
328 | ch = NEXTCH; |
329 | if (ch == EOFCH) |
330 | break; |
331 | switch (ch) { |
332 | case 'a': ch = '\a'; break; |
333 | case 'b': ch = '\b'; break; |
334 | case 'f': ch = '\f'; break; |
335 | case 'n': ch = '\n'; break; |
336 | case 'r': ch = '\r'; break; |
337 | case 't': ch = '\t'; break; |
338 | case 'v': ch = '\v'; break; |
339 | } |
340 | DPUTC(d, ch); |
341 | ch = NEXTCH; |
342 | continue; |
343 | } |
344 | |
345 | /* --- If it's a quote or some other end marker then stop --- */ |
346 | |
347 | if (ch == q) |
348 | break; |
d470270a |
349 | if (!q && isspace(ch)) |
e375fe33 |
350 | break; |
351 | |
352 | /* --- Otherwise contribute and continue --- */ |
353 | |
354 | DPUTC(d, ch); |
355 | if ((ch = NEXTCH) == EOFCH) |
356 | break; |
357 | } |
358 | |
359 | /* --- Done --- */ |
360 | |
361 | DPUTZ(d); |
362 | return (0); |
363 | |
364 | #undef NEXTCH |
365 | #undef EOFCH |
366 | } |
367 | |
368 | /* --- @putstring@ --- * |
369 | * |
370 | * Arguments: @FILE *fp@ = stream to write on |
371 | * @const char *p@ = pointer to text |
372 | * @unsigned raw@ = whether the string is to be written raw |
373 | * |
374 | * Returns: --- |
375 | * |
376 | * Use: Emits a string to a stream. |
377 | */ |
378 | |
379 | static void putstring(FILE *fp, const char *p, unsigned raw) |
380 | { |
381 | size_t sz = strlen(p); |
382 | unsigned qq; |
383 | const char *q; |
384 | |
385 | /* --- Just write the string null terminated if raw --- */ |
386 | |
387 | if (raw) { |
388 | fwrite(p, 1, sz + 1, fp); |
389 | return; |
390 | } |
391 | |
392 | /* --- Check for any dodgy characters --- */ |
393 | |
394 | qq = 0; |
395 | for (q = p; *q; q++) { |
396 | if (isspace((unsigned char)*q)) { |
397 | qq = '\"'; |
398 | break; |
399 | } |
400 | } |
401 | |
402 | if (qq) |
403 | putc(qq, fp); |
404 | |
405 | /* --- Emit the string --- */ |
406 | |
407 | for (q = p; *q; q++) { |
408 | switch (*q) { |
409 | case '\a': fputc('\\', fp); fputc('a', fp); break; |
410 | case '\b': fputc('\\', fp); fputc('b', fp); break; |
411 | case '\f': fputc('\\', fp); fputc('f', fp); break; |
412 | case '\n': fputc('\\', fp); fputc('n', fp); break; |
413 | case '\r': fputc('\\', fp); fputc('r', fp); break; |
414 | case '\t': fputc('\\', fp); fputc('t', fp); break; |
415 | case '\v': fputc('\\', fp); fputc('v', fp); break; |
416 | case '`': fputc('\\', fp); fputc('`', fp); break; |
417 | case '\'': fputc('\\', fp); fputc('\'', fp); break; |
418 | case '\"': fputc('\\', fp); fputc('\"', fp); break; |
419 | case '#': fputc('\\', fp); fputc('#', fp); break; |
420 | default: |
421 | putc(*q, fp); |
422 | break; |
423 | } |
424 | } |
425 | |
426 | /* --- Done --- */ |
427 | |
428 | if (qq) |
429 | putc(qq, fp); |
430 | } |
431 | |
432 | /*----- Guts --------------------------------------------------------------*/ |
433 | |
5685a696 |
434 | static int checkhash(const char *file, unsigned f, |
c65df279 |
435 | const gchash *gch, const encodeops *e) |
e375fe33 |
436 | { |
437 | int rc; |
438 | FILE *fp; |
439 | dstr d = DSTR_INIT; |
440 | dstr dd = DSTR_INIT; |
441 | unsigned long n = 0, nfail = 0; |
442 | octet *buf = xmalloc(2 * gch->hashsz); |
443 | |
444 | if (!file) |
445 | fp = stdin; |
446 | else if ((fp = fopen(file, f & f_raw ? "r" : "rb")) == 0) { |
447 | moan("couldn't open `%s': %s", file, strerror(errno)); |
448 | return (EXIT_FAILURE); |
449 | } |
450 | |
451 | while (DRESET(&d), dstr_putline(&d, fp) != EOF) { |
452 | char *p = d.buf; |
453 | char *q; |
454 | unsigned ff = f; |
455 | |
456 | /* --- Handle a directive --- */ |
457 | |
458 | if (*p == '#') { |
459 | p++; |
460 | if ((q = str_getword(&p)) == 0) |
461 | continue; |
462 | if (strcmp(q, "hash") == 0) { |
463 | const gchash *g; |
464 | if ((q = str_getword(&p)) == 0) |
465 | continue; |
466 | if ((g = gethash(q)) == 0) |
467 | continue; |
468 | gch = g; |
469 | xfree(buf); |
470 | buf = xmalloc(2 * gch->hashsz); |
5685a696 |
471 | } else if (strcmp(q, "encoding") == 0) { |
c65df279 |
472 | const encodeops *ee; |
5685a696 |
473 | if ((q = str_getword(&p)) == 0) |
474 | continue; |
c65df279 |
475 | if ((ee = getencoding(q)) == 0) |
5685a696 |
476 | continue; |
477 | e = ee; |
e375fe33 |
478 | } else if (strcmp(q, "escape") == 0) |
479 | f |= f_escape; |
480 | continue; |
481 | } |
482 | |
483 | /* --- Otherwise it's a hex thing --- */ |
484 | |
12902a5c |
485 | q = p; |
486 | while (*p && *p != ' ') |
487 | p++; |
488 | if (!*p) |
e375fe33 |
489 | continue; |
12902a5c |
490 | *p++ = 0; |
5685a696 |
491 | if (e->get(q, buf, gch->hashsz, 0) < gch->hashsz) |
e375fe33 |
492 | continue; |
12902a5c |
493 | if (*p == '*') |
e375fe33 |
494 | ff |= f_binary; |
12902a5c |
495 | else if (*p != ' ') |
e375fe33 |
496 | continue; |
12902a5c |
497 | p++; |
e375fe33 |
498 | |
499 | if (f & f_escape) { |
500 | DRESET(&dd); |
501 | getstring(0, p, &dd, 0); |
502 | p = dd.buf; |
503 | } |
504 | |
505 | if (fhash(p, ff, gch, buf + gch->hashsz)) { |
506 | moan("couldn't read `%s': %s", p, strerror(errno)); |
507 | rc = EXIT_FAILURE; |
508 | continue; |
509 | } |
510 | if (memcmp(buf, buf + gch->hashsz, gch->hashsz) != 0) { |
511 | if (ff & f_verbose) |
512 | fprintf(stderr, "FAIL %s\n", p); |
513 | else |
514 | moan("%s check failed for `%s'", gch->name, p); |
515 | nfail++; |
516 | rc = EXIT_FAILURE; |
517 | } else { |
518 | if (ff & f_verbose) |
519 | fprintf(stderr, "OK %s\n", p); |
520 | } |
521 | n++; |
522 | } |
523 | |
524 | dstr_destroy(&d); |
525 | dstr_destroy(&dd); |
526 | xfree(buf); |
527 | if ((f & f_verbose) && nfail) |
528 | moan("%lu of %lu file(s) failed %s check", nfail, n, gch->name); |
529 | else if (!n) |
530 | moan("no files checked"); |
531 | return (0); |
532 | } |
533 | |
5685a696 |
534 | static int dohash(const char *file, unsigned f, |
c65df279 |
535 | const gchash *gch, const encodeops *e) |
e375fe33 |
536 | { |
537 | int rc = 0; |
538 | octet *p = xmalloc(gch->hashsz); |
539 | |
540 | if (fhash(file, f, gch, p)) { |
541 | moan("couldn't read `%s': %s", file ? file : "<stdin>", strerror(errno)); |
542 | rc = EXIT_FAILURE; |
543 | } else { |
5685a696 |
544 | e->put(p, gch->hashsz, stdout); |
e375fe33 |
545 | if (file) { |
546 | fputc(' ', stdout); |
547 | fputc(f & f_binary ? '*' : ' ', stdout); |
548 | if (f & f_escape) |
549 | putstring(stdout, file, 0); |
550 | else |
551 | fputs(file, stdout); |
552 | } |
553 | fputc('\n', stdout); |
554 | } |
555 | |
556 | xfree(p); |
557 | return (rc); |
558 | } |
559 | |
5685a696 |
560 | static int dofile(const char *file, unsigned f, |
c65df279 |
561 | const gchash *gch, const encodeops *e) |
12902a5c |
562 | { |
5685a696 |
563 | return (f & f_check ? checkhash : dohash)(file, f, gch, e); |
12902a5c |
564 | } |
565 | |
5685a696 |
566 | static int hashfiles(const char *file, unsigned f, |
c65df279 |
567 | const gchash *gch, const encodeops *e) |
e375fe33 |
568 | { |
569 | FILE *fp; |
570 | dstr d = DSTR_INIT; |
571 | int rc = 0; |
572 | int rrc; |
573 | |
574 | if (!file) |
575 | fp = stdin; |
576 | else if ((fp = fopen(file, f & f_raw ? "r" : "rb")) == 0) { |
577 | moan("couldn't open `%s': %s", file, strerror(errno)); |
578 | return (EXIT_FAILURE); |
579 | } |
580 | |
581 | for (;;) { |
582 | DRESET(&d); |
583 | if (getstring(fp, 0, &d, f & f_raw)) |
584 | break; |
5685a696 |
585 | if ((rrc = dofile(d.buf, f, gch, e)) != 0) |
e375fe33 |
586 | rc = rrc; |
587 | } |
588 | |
589 | return (rc); |
590 | } |
591 | |
5685a696 |
592 | static int hashsum(const char *file, unsigned f, |
c65df279 |
593 | const gchash *gch, const encodeops *e) |
e375fe33 |
594 | { |
5685a696 |
595 | return (f & f_files ? hashfiles : dofile)(file, f, gch, e); |
e375fe33 |
596 | } |
597 | |
598 | /*----- Main driver -------------------------------------------------------*/ |
599 | |
c65df279 |
600 | void version(FILE *fp) |
e375fe33 |
601 | { |
602 | pquis(fp, "$, Catacomb version " VERSION "\n"); |
603 | } |
604 | |
605 | static void usage(FILE *fp) |
606 | { |
c65df279 |
607 | pquis(fp, "Usage: $ [-f0ebcv] [-a ALGORITHM] [-E ENC] [FILES...]\n"); |
e375fe33 |
608 | } |
609 | |
610 | static void help(FILE *fp, const gchash *gch) |
611 | { |
612 | version(fp); |
613 | fputc('\n', fp); |
614 | usage(fp); |
615 | pquis(fp, "\n\ |
616 | Generates or checks message digests on files. Options available:\n\ |
617 | \n\ |
618 | -h, --help Display this help message.\n\ |
619 | -V, --version Display program's version number.\n\ |
620 | -u, --usage Display a terse usage message.\n\ |
c65df279 |
621 | -l, --list [ITEM...] Show known hash functions and/or encodings.\n\ |
e375fe33 |
622 | \n\ |
623 | -a, --algorithm=ALG Use the message digest algorithm ALG.\n\ |
92c494ce |
624 | -E, --encoding=ENC Represent hashes using encoding ENC.\n\ |
e375fe33 |
625 | \n\ |
626 | -f, --files Read a list of file names from standard input.\n\ |
627 | -0, --null File names are null terminated, not plain text.\n\ |
628 | \n\ |
629 | -e, --escape Escape funny characters in filenames.\n\ |
630 | -c, --check Check message digests rather than emitting them.\n\ |
631 | -b, --binary When reading files, treat them as binary.\n\ |
632 | -v, --verbose Be verbose when checking digests.\n\ |
633 | \n\ |
92c494ce |
634 | For a list of hashing algorithms and encodings, type `$ --list'.\n\ |
e375fe33 |
635 | "); |
636 | if (gch) |
637 | fprintf(fp, "The default message digest algorithm is %s.\n", gch->name); |
638 | } |
639 | |
c65df279 |
640 | #define LISTS(LI) \ |
641 | LI("Lists", list, listtab[i].name, listtab[i].name) \ |
642 | LI("Hash functions", hash, ghashtab[i], ghashtab[i]->name) \ |
643 | LI("Encodings", enc, encodingtab[i].name, encodingtab[i].name) |
644 | |
645 | MAKELISTTAB(listtab, LISTS) |
646 | |
e375fe33 |
647 | int main(int argc, char *argv[]) |
648 | { |
649 | unsigned f = 0; |
650 | const gchash *gch = 0; |
c65df279 |
651 | const encodeops *e = &encodingtab[0]; |
e375fe33 |
652 | int rc; |
653 | |
654 | /* --- Initialization --- */ |
655 | |
656 | ego(argv[0]); |
657 | sub_init(); |
658 | |
659 | /* --- Choose a hash function from the name --- */ |
660 | |
661 | { |
662 | char *q = xstrdup(QUIS); |
663 | size_t len = strlen(q); |
664 | if (len > 3 && strcmp(q + len - 3, "sum") == 0) { |
665 | q[len - 3] = 0; |
666 | gch = gethash(q); |
667 | } |
668 | if (!gch) |
e9026a0a |
669 | gch = gethash("md5"); |
e375fe33 |
670 | xfree(q); |
671 | } |
672 | |
673 | /* --- Read options --- */ |
674 | |
675 | for (;;) { |
676 | static struct option opts[] = { |
677 | { "help", 0, 0, 'h' }, |
678 | { "verbose", 0, 0, 'V' }, |
679 | { "usage", 0, 0, 'u' }, |
680 | |
681 | { "algorithm", OPTF_ARGREQ, 0, 'a' }, |
682 | { "hash", OPTF_ARGREQ, 0, 'a' }, |
5685a696 |
683 | { "encoding", OPTF_ARGREQ, 0, 'E' }, |
e375fe33 |
684 | { "list", 0, 0, 'l' }, |
685 | |
686 | { "files", 0, 0, 'f' }, |
687 | { "find", 0, 0, 'f' }, |
688 | { "null", 0, 0, '0' }, |
689 | |
690 | { "escape", 0, 0, 'e' }, |
691 | { "check", 0, 0, 'c' }, |
692 | { "binary", 0, 0, 'b' }, |
693 | { "verbose", 0, 0, 'v' }, |
694 | |
695 | { 0, 0, 0, 0 } |
696 | }; |
5685a696 |
697 | int i = mdwopt(argc, argv, "hVu a:E:l f0 ecbv", opts, 0, 0, 0); |
e375fe33 |
698 | if (i < 0) |
699 | break; |
700 | |
701 | switch (i) { |
702 | case 'h': |
703 | help(stdout, gch); |
704 | exit(0); |
705 | case 'V': |
706 | version(stdout); |
707 | exit(0); |
708 | case 'u': |
709 | usage(stdout); |
710 | exit(0); |
c65df279 |
711 | case 'l': |
712 | exit(displaylists(listtab, argv + optind)); |
e375fe33 |
713 | case 'a': |
714 | if ((gch = gethash(optarg)) == 0) |
715 | die(EXIT_FAILURE, "unknown hash algorithm `%s'", optarg); |
716 | f |= f_oddhash; |
717 | break; |
5685a696 |
718 | case 'E': |
c65df279 |
719 | if ((e = getencoding(optarg)) == 0) |
5685a696 |
720 | die(EXIT_FAILURE, "unknown encoding `%s'", optarg); |
721 | f |= f_oddenc; |
722 | break; |
e375fe33 |
723 | case 'f': |
724 | f |= f_files; |
725 | break; |
726 | case '0': |
727 | f |= f_raw; |
728 | break; |
729 | case 'e': |
730 | f |= f_escape; |
731 | break; |
732 | case 'c': |
733 | f |= f_check; |
734 | break; |
735 | case 'b': |
736 | f |= f_binary; |
737 | break; |
738 | case 'v': |
739 | f |= f_verbose; |
740 | break; |
741 | default: |
742 | f |= f_bogus; |
743 | break; |
744 | } |
745 | } |
746 | |
747 | if (f & f_bogus) { |
748 | usage(stderr); |
749 | exit(EXIT_FAILURE); |
750 | } |
751 | argv += optind; |
752 | argc -= optind; |
753 | |
754 | /* --- Generate output --- */ |
755 | |
92c494ce |
756 | if (!argc) |
757 | rc = hashsum(0, f, gch, e); |
758 | else { |
e375fe33 |
759 | int i; |
760 | int rrc; |
92c494ce |
761 | |
e375fe33 |
762 | rc = 0; |
92c494ce |
763 | if (!(f & f_check)) { |
764 | if (f & f_oddhash) printf("#hash %s\n", gch->name); |
765 | if (f & f_oddenc) printf("#encoding %s\n", e->name); |
766 | if (f & f_escape) fputs("#escape\n", stdout); |
767 | } |
e375fe33 |
768 | for (i = 0; i < argc; i++) { |
5685a696 |
769 | if ((rrc = hashsum(argv[i], f, gch, e)) != 0) |
e375fe33 |
770 | rc = rrc; |
771 | } |
92c494ce |
772 | } |
e375fe33 |
773 | |
774 | return (rc); |
775 | } |
776 | |
777 | /*----- That's all, folks -------------------------------------------------*/ |