Commit | Line | Data |
---|---|---|
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 | ||
45c0fd36 | 10 | /*----- Licensing notice --------------------------------------------------* |
e375fe33 | 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. | |
45c0fd36 | 18 | * |
e375fe33 | 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. | |
45c0fd36 | 23 | * |
e375fe33 | 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; | |
45c0fd36 | 97 | return (i); |
5685a696 | 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 | ||
d7e6bc66 | 214 | if (!file || strcmp(file, "-") == 0) |
e375fe33 | 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 | ||
d7e6bc66 | 444 | if (!file || strcmp(file, "-") == 0) |
e375fe33 | 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 | ||
d7e6bc66 | 574 | if (!file || strcmp(file, "-") == 0) |
e375fe33 | 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 | ||
db2d393e MW |
756 | if (!(f & f_check) && (argc || (f & f_files))) { |
757 | if (f & f_oddhash) printf("#hash %s\n", gch->name); | |
758 | if (f & f_oddenc) printf("#encoding %s\n", e->name); | |
759 | if (f & f_escape) fputs("#escape\n", stdout); | |
760 | } | |
92c494ce | 761 | if (!argc) |
762 | rc = hashsum(0, f, gch, e); | |
763 | else { | |
e375fe33 | 764 | int i; |
765 | int rrc; | |
92c494ce | 766 | |
e375fe33 | 767 | rc = 0; |
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 -------------------------------------------------*/ |