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1 | /* | |
2 | * $RCSId: xc/lib/fontconfig/src/fccache.c,v 1.12 2002/08/22 07:36:44 keithp Exp $ | |
3 | * | |
4 | * Copyright © 2000 Keith Packard | |
5 | * Copyright © 2005 Patrick Lam | |
6 | * | |
7 | * Permission to use, copy, modify, distribute, and sell this software and its | |
8 | * documentation for any purpose is hereby granted without fee, provided that | |
9 | * the above copyright notice appear in all copies and that both that | |
10 | * copyright notice and this permission notice appear in supporting | |
11 | * documentation, and that the name of Keith Packard not be used in | |
12 | * advertising or publicity pertaining to distribution of the software without | |
13 | * specific, written prior permission. Keith Packard makes no | |
14 | * representations about the suitability of this software for any purpose. It | |
15 | * is provided "as is" without express or implied warranty. | |
16 | * | |
17 | * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
18 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO | |
19 | * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
20 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
21 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER | |
22 | * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR | |
23 | * PERFORMANCE OF THIS SOFTWARE. | |
24 | */ | |
25 | ||
26 | #include <fcntl.h> | |
27 | #include <dirent.h> | |
28 | #include <string.h> | |
29 | #include <sys/mman.h> | |
30 | #include <sys/utsname.h> | |
31 | #include <sys/types.h> | |
32 | #include <unistd.h> | |
33 | #include "fcint.h" | |
34 | #include <unistd.h> | |
35 | ||
36 | #define ENDIAN_TEST 0x12345678 | |
37 | #define MACHINE_SIGNATURE_SIZE 9 + 5*20 + 1 | |
38 | ||
39 | #ifndef O_BINARY | |
40 | #define O_BINARY 0 | |
41 | #endif | |
42 | ||
43 | static int | |
44 | FcDirCacheOpen (const FcChar8 * dir); | |
45 | ||
46 | static char * | |
47 | FcDirCacheHashName (char * cache_file, int collisions); | |
48 | ||
49 | static off_t | |
50 | FcCacheSkipToArch (int fd, const char * arch); | |
51 | ||
52 | static FcBool | |
53 | FcCacheCopyOld (int fd, int fd_orig, off_t start); | |
54 | ||
55 | static void * | |
56 | FcDirCacheProduce (FcFontSet *set, FcCache * metadata); | |
57 | ||
58 | static FcBool | |
59 | FcDirCacheConsume (int fd, const char * dir, FcFontSet *set, FcConfig *config); | |
60 | ||
61 | static int | |
62 | FcCacheNextOffset(off_t w); | |
63 | ||
64 | static char * | |
65 | FcCacheMachineSignature (void); | |
66 | ||
67 | static FcBool | |
68 | FcCacheHaveBank (int bank); | |
69 | ||
70 | static void | |
71 | FcCacheAddBankDir (int bank, const char * dir); | |
72 | ||
73 | struct MD5Context { | |
74 | FcChar32 buf[4]; | |
75 | FcChar32 bits[2]; | |
76 | unsigned char in[64]; | |
77 | }; | |
78 | ||
79 | static void MD5Init(struct MD5Context *ctx); | |
80 | static void MD5Update(struct MD5Context *ctx, unsigned char *buf, unsigned len); | |
81 | static void MD5Final(unsigned char digest[16], struct MD5Context *ctx); | |
82 | static void MD5Transform(FcChar32 buf[4], FcChar32 in[16]); | |
83 | ||
84 | #define FC_DBG_CACHE_REF 1024 | |
85 | ||
86 | static char * | |
87 | FcCacheReadString (int fd, char *dest, int len) | |
88 | { | |
89 | int size; | |
90 | int slen; | |
91 | ||
92 | if (len == 0) | |
93 | return 0; | |
94 | ||
95 | size = read (fd, dest, len-1); | |
96 | ||
97 | if (size > 0) | |
98 | { | |
99 | dest[size] = '\0'; | |
100 | slen = strlen (dest); | |
101 | ||
102 | lseek (fd, slen - size + 1, SEEK_CUR); | |
103 | return slen < len ? dest : 0; | |
104 | } | |
105 | ||
106 | return 0; | |
107 | } | |
108 | ||
109 | static void | |
110 | FcCacheSkipString (int fd) | |
111 | { | |
112 | char buf[256]; | |
113 | int size; | |
114 | int slen; | |
115 | ||
116 | while ( (size = read (fd, buf, sizeof (buf)-1)) > 0) | |
117 | { | |
118 | buf [size] = '\0'; | |
119 | slen = strlen (buf); | |
120 | if (slen < size) | |
121 | { | |
122 | lseek (fd, slen - size + 1, SEEK_CUR); | |
123 | return; | |
124 | } | |
125 | } | |
126 | } | |
127 | ||
128 | static FcBool | |
129 | FcCacheWriteString (int fd, const char *chars) | |
130 | { | |
131 | if (write (fd, chars, strlen(chars)+1) != strlen(chars)+1) | |
132 | return FcFalse; | |
133 | return FcTrue; | |
134 | } | |
135 | ||
136 | static void | |
137 | FcGlobalCacheDirDestroy (FcGlobalCacheDir *d) | |
138 | { | |
139 | FcStrSetDestroy (d->subdirs); | |
140 | FcMemFree (FC_MEM_STRING, strlen (d->name)+1); | |
141 | free (d->name); | |
142 | FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCacheDir)); | |
143 | free (d); | |
144 | } | |
145 | ||
146 | FcGlobalCache * | |
147 | FcGlobalCacheCreate (void) | |
148 | { | |
149 | FcGlobalCache *cache; | |
150 | ||
151 | cache = malloc (sizeof (FcGlobalCache)); | |
152 | if (!cache) | |
153 | return 0; | |
154 | FcMemAlloc (FC_MEM_CACHE, sizeof (FcGlobalCache)); | |
155 | cache->dirs = 0; | |
156 | cache->updated = FcFalse; | |
157 | cache->fd = -1; | |
158 | return cache; | |
159 | } | |
160 | ||
161 | void | |
162 | FcGlobalCacheDestroy (FcGlobalCache *cache) | |
163 | { | |
164 | FcGlobalCacheDir *d, *next; | |
165 | ||
166 | for (d = cache->dirs; d; d = next) | |
167 | { | |
168 | next = d->next; | |
169 | FcGlobalCacheDirDestroy (d); | |
170 | } | |
171 | FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCache)); | |
172 | free (cache); | |
173 | } | |
174 | ||
175 | void | |
176 | FcGlobalCacheLoad (FcGlobalCache *cache, | |
177 | FcStrSet *staleDirs, | |
178 | const FcChar8 *cache_file, | |
179 | FcConfig *config) | |
180 | { | |
181 | char name_buf[FC_MAX_FILE_LEN]; | |
182 | FcGlobalCacheDir *d, *next; | |
183 | FcFileTime config_time = FcConfigModifiedTime (config); | |
184 | char * current_arch_machine_name; | |
185 | char candidate_arch_machine_name[MACHINE_SIGNATURE_SIZE + 9]; | |
186 | off_t current_arch_start; | |
187 | ||
188 | struct stat cache_stat, dir_stat; | |
189 | char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1]; | |
190 | ||
191 | if (stat ((char *) cache_file, &cache_stat) < 0) | |
192 | return; | |
193 | ||
194 | cache->fd = open ((char *) cache_file, O_RDONLY | O_BINARY); | |
195 | if (cache->fd == -1) | |
196 | return; | |
197 | ||
198 | cache->updated = FcFalse; | |
199 | ||
200 | if (!FcCacheReadString (cache->fd, name_buf, sizeof (name_buf))) | |
201 | goto bail_and_destroy; | |
202 | if (strcmp (name_buf, FC_GLOBAL_MAGIC_COOKIE) != 0) | |
203 | goto bail_and_destroy; | |
204 | ||
205 | current_arch_machine_name = FcCacheMachineSignature (); | |
206 | current_arch_start = FcCacheSkipToArch(cache->fd, | |
207 | current_arch_machine_name); | |
208 | if (current_arch_start < 0) | |
209 | goto bail_and_destroy; | |
210 | ||
211 | lseek (cache->fd, current_arch_start, SEEK_SET); | |
212 | if (!FcCacheReadString (cache->fd, candidate_arch_machine_name, | |
213 | sizeof (candidate_arch_machine_name))) | |
214 | goto bail_and_destroy; | |
215 | if (strlen(candidate_arch_machine_name) == 0) | |
216 | goto bail_and_destroy; | |
217 | ||
218 | while (1) | |
219 | { | |
220 | off_t targ; | |
221 | ||
222 | if (!FcCacheReadString (cache->fd, name_buf, sizeof (name_buf)) || | |
223 | !strlen(name_buf)) | |
224 | break; | |
225 | ||
226 | /* Directory must be older than the global cache file; also | |
227 | cache must be newer than the config file. */ | |
228 | if (stat ((char *) name_buf, &dir_stat) < 0 || | |
229 | dir_stat.st_mtime > cache_stat.st_mtime || | |
230 | (config_time.set && cache_stat.st_mtime < config_time.time)) | |
231 | { | |
232 | FcCache md; | |
233 | off_t off; | |
234 | ||
235 | FcStrSetAdd (staleDirs, FcStrCopy ((FcChar8 *)name_buf)); | |
236 | ||
237 | /* skip subdirs */ | |
238 | while (FcCacheReadString (cache->fd, subdirName, | |
239 | sizeof (subdirName)) && | |
240 | strlen (subdirName)) | |
241 | ; | |
242 | ||
243 | if (read (cache->fd, &md, sizeof (FcCache)) != sizeof(FcCache)) | |
244 | { | |
245 | perror ("read metadata"); | |
246 | goto bail1; | |
247 | } | |
248 | off = FcCacheNextOffset (lseek(cache->fd, 0, SEEK_CUR)) + md.count; | |
249 | if (lseek (cache->fd, off, SEEK_SET) != off) | |
250 | { | |
251 | perror ("lseek"); | |
252 | goto bail1; | |
253 | } | |
254 | continue; | |
255 | } | |
256 | ||
257 | d = malloc (sizeof (FcGlobalCacheDir)); | |
258 | if (!d) | |
259 | goto bail1; | |
260 | ||
261 | d->next = cache->dirs; | |
262 | cache->dirs = d; | |
263 | ||
264 | d->name = (char *)FcStrCopy ((FcChar8 *)name_buf); | |
265 | d->ent = 0; | |
266 | d->state = FcGCDirFileRead; | |
267 | ||
268 | d->subdirs = FcStrSetCreate(); | |
269 | do | |
270 | { | |
271 | if (!FcCacheReadString (cache->fd, subdirName, | |
272 | sizeof (subdirName)) || | |
273 | !strlen (subdirName)) | |
274 | break; | |
275 | FcStrSetAdd (d->subdirs, (FcChar8 *)subdirName); | |
276 | } while (1); | |
277 | ||
278 | d->offset = lseek (cache->fd, 0, SEEK_CUR); | |
279 | if (read (cache->fd, &d->metadata, sizeof (FcCache)) != sizeof (FcCache)) | |
280 | goto bail1; | |
281 | targ = FcCacheNextOffset (lseek(cache->fd, 0, SEEK_CUR)) + d->metadata.count; | |
282 | if (lseek (cache->fd, targ, SEEK_SET) != targ) | |
283 | goto bail1; | |
284 | } | |
285 | return; | |
286 | ||
287 | bail1: | |
288 | for (d = cache->dirs; d; d = next) | |
289 | { | |
290 | next = d->next; | |
291 | free (d); | |
292 | } | |
293 | cache->dirs = 0; | |
294 | ||
295 | close (cache->fd); | |
296 | cache->fd = -1; | |
297 | return; | |
298 | ||
299 | bail_and_destroy: | |
300 | close (cache->fd); | |
301 | cache->fd = -1; | |
302 | ||
303 | if (stat ((char *) cache_file, &cache_stat) == 0) | |
304 | unlink ((char *)cache_file); | |
305 | ||
306 | return; | |
307 | ||
308 | } | |
309 | ||
310 | FcBool | |
311 | FcGlobalCacheReadDir (FcFontSet *set, FcStrSet *dirs, FcGlobalCache * cache, const char *dir, FcConfig *config) | |
312 | { | |
313 | FcGlobalCacheDir *d; | |
314 | int i; | |
315 | ||
316 | if (cache->fd == -1) | |
317 | return FcFalse; | |
318 | ||
319 | if (!(dir = (char *)FcConfigNormalizeFontDir (config, (FcChar8 *)dir))) | |
320 | return FcFalse; /* non-existing directory */ | |
321 | ||
322 | for (d = cache->dirs; d; d = d->next) | |
323 | { | |
324 | if (strcmp (d->name, dir) == 0) | |
325 | { | |
326 | if (d->state == FcGCDirDisabled) | |
327 | return FcFalse; | |
328 | ||
329 | if (d->state == FcGCDirFileRead) | |
330 | { | |
331 | lseek (cache->fd, d->offset, SEEK_SET); | |
332 | if (!FcDirCacheConsume (cache->fd, d->name, set, config)) | |
333 | return FcFalse; | |
334 | ||
335 | for (i = 0; i < d->subdirs->num; i++) | |
336 | FcStrSetAdd (dirs, (FcChar8 *)d->subdirs->strs[i]); | |
337 | ||
338 | d->state = FcGCDirConsumed; | |
339 | } | |
340 | return FcTrue; | |
341 | } | |
342 | } | |
343 | ||
344 | return FcFalse; | |
345 | } | |
346 | ||
347 | static FcGlobalCacheDir * | |
348 | FcGlobalCacheDirFind (FcGlobalCache *cache, const char *name) | |
349 | { | |
350 | FcGlobalCacheDir * d; | |
351 | ||
352 | if (!cache || !name) | |
353 | return NULL; | |
354 | ||
355 | for (d = cache->dirs; d; d = d->next) | |
356 | if (strcmp((const char *)d->name, (const char *)name) == 0) | |
357 | return d; | |
358 | ||
359 | return NULL; | |
360 | } | |
361 | ||
362 | FcBool | |
363 | FcGlobalCacheUpdate (FcGlobalCache *cache, | |
364 | FcStrSet *dirs, | |
365 | const char *orig_name, | |
366 | FcFontSet *set, | |
367 | FcConfig *config) | |
368 | { | |
369 | FcGlobalCacheDir *d; | |
370 | int i; | |
371 | const char *name; | |
372 | ||
373 | name = (char *)FcConfigNormalizeFontDir (config, (FcChar8 *)orig_name); | |
374 | if (!name) | |
375 | { | |
376 | fprintf(stderr, "Invalid directory name %s\n", orig_name); | |
377 | return FcFalse; | |
378 | } | |
379 | ||
380 | d = FcGlobalCacheDirFind (cache, name); | |
381 | ||
382 | if (!d) | |
383 | { | |
384 | d = malloc (sizeof (FcGlobalCacheDir)); | |
385 | if (!d) | |
386 | return FcFalse; | |
387 | d->next = cache->dirs; | |
388 | cache->dirs = d; | |
389 | } else { | |
390 | /* free old resources */ | |
391 | FcStrFree ((FcChar8 *)d->name); | |
392 | free (d->ent); | |
393 | FcStrSetDestroy (d->subdirs); | |
394 | } | |
395 | ||
396 | cache->updated = FcTrue; | |
397 | ||
398 | d->name = (char *)FcStrCopy ((FcChar8 *)name); | |
399 | d->ent = FcDirCacheProduce (set, &d->metadata); | |
400 | d->offset = 0; | |
401 | d->subdirs = FcStrSetCreate(); | |
402 | d->state = FcGCDirUpdated; | |
403 | for (i = 0; i < dirs->num; i++) | |
404 | FcStrSetAdd (d->subdirs, dirs->strs[i]); | |
405 | return FcTrue; | |
406 | } | |
407 | ||
408 | FcBool | |
409 | FcGlobalCacheSave (FcGlobalCache *cache, | |
410 | const FcChar8 *cache_file, | |
411 | FcConfig *config) | |
412 | { | |
413 | int fd, fd_orig, i; | |
414 | FcGlobalCacheDir *dir; | |
415 | FcAtomic *atomic; | |
416 | off_t current_arch_start = 0, truncate_to; | |
417 | char * current_arch_machine_name, * header; | |
418 | ||
419 | if (!cache->updated) | |
420 | return FcTrue; | |
421 | ||
422 | #if defined (HAVE_GETUID) && defined (HAVE_GETEUID) | |
423 | /* Set-UID programs can't safely update the cache */ | |
424 | if (getuid () != geteuid ()) | |
425 | return FcFalse; | |
426 | #endif | |
427 | ||
428 | atomic = FcAtomicCreate (cache_file); | |
429 | if (!atomic) | |
430 | return FcFalse; | |
431 | ||
432 | if (!FcAtomicLock (atomic)) | |
433 | goto bail1; | |
434 | fd = open ((char *) FcAtomicNewFile(atomic), O_RDWR | O_CREAT | O_BINARY, | |
435 | S_IRUSR | S_IWUSR); | |
436 | if (fd == -1) | |
437 | goto bail2; | |
438 | FcCacheWriteString (fd, FC_GLOBAL_MAGIC_COOKIE); | |
439 | ||
440 | fd_orig = open ((char *) FcAtomicOrigFile(atomic), O_RDONLY | O_BINARY); | |
441 | ||
442 | current_arch_machine_name = FcCacheMachineSignature (); | |
443 | if (fd_orig == -1) | |
444 | current_arch_start = 0; | |
445 | else | |
446 | current_arch_start = FcCacheSkipToArch (fd_orig, | |
447 | current_arch_machine_name); | |
448 | ||
449 | if (current_arch_start < 0) | |
450 | { | |
451 | off_t i = lseek(fd_orig, 0, SEEK_END); | |
452 | if (i < strlen (FC_GLOBAL_MAGIC_COOKIE)+1) | |
453 | i = strlen (FC_GLOBAL_MAGIC_COOKIE)+1; | |
454 | current_arch_start = FcCacheNextOffset (i); | |
455 | } | |
456 | ||
457 | if (!FcCacheCopyOld(fd, fd_orig, current_arch_start)) | |
458 | goto bail3; | |
459 | ||
460 | current_arch_start = lseek(fd, 0, SEEK_CUR); | |
461 | if (ftruncate (fd, current_arch_start) == -1) | |
462 | goto bail3; | |
463 | ||
464 | header = malloc (10 + strlen (current_arch_machine_name)); | |
465 | if (!header) | |
466 | goto bail3; | |
467 | ||
468 | truncate_to = current_arch_start + strlen(current_arch_machine_name) + 11; | |
469 | for (dir = cache->dirs; dir; dir = dir->next) | |
470 | { | |
471 | if (dir->state == FcGCDirDisabled) | |
472 | continue; | |
473 | truncate_to += strlen(dir->name) + 1; | |
474 | truncate_to += sizeof (FcCache); | |
475 | truncate_to = FcCacheNextOffset (truncate_to); | |
476 | truncate_to += dir->metadata.count; | |
477 | ||
478 | for (i = 0; i < dir->subdirs->size; i++) | |
479 | truncate_to += strlen((char *)dir->subdirs->strs[i]) + 1; | |
480 | truncate_to ++; | |
481 | } | |
482 | truncate_to -= current_arch_start; | |
483 | ||
484 | sprintf (header, "%8x ", (int)truncate_to); | |
485 | strcat (header, current_arch_machine_name); | |
486 | if (!FcCacheWriteString (fd, header)) | |
487 | goto bail4; | |
488 | ||
489 | for (dir = cache->dirs; dir; dir = dir->next) | |
490 | { | |
491 | const char * d; | |
492 | off_t off; | |
493 | ||
494 | if (!dir->name || dir->state == FcGCDirDisabled) | |
495 | continue; | |
496 | d = (const char *)FcConfigNormalizeFontDir (config, (const FcChar8 *)dir->name); | |
497 | if (!d) | |
498 | continue; | |
499 | ||
500 | if (dir->metadata.count && !dir->ent) | |
501 | { | |
502 | if (dir->state == FcGCDirUpdated || fd_orig < 0) | |
503 | { | |
504 | fprintf(stderr, "Invalid metadata entry for %s, skipping...\n", d); | |
505 | continue; | |
506 | } | |
507 | /* copy the old content */ | |
508 | dir->ent = malloc (dir->metadata.count); | |
509 | if (!dir->ent) | |
510 | { | |
511 | perror("malloc error"); | |
512 | continue; | |
513 | } | |
514 | off = FcCacheNextOffset (dir->offset + sizeof(FcCache)); | |
515 | if (lseek (fd_orig, off, SEEK_SET) != off) | |
516 | { | |
517 | perror("lseek"); | |
518 | free(dir->ent); | |
519 | continue; | |
520 | } | |
521 | if (read (fd_orig, dir->ent, dir->metadata.count) | |
522 | != dir->metadata.count) | |
523 | { | |
524 | perror("read"); | |
525 | free(dir->ent); | |
526 | continue; | |
527 | } | |
528 | } | |
529 | ||
530 | FcCacheWriteString (fd, d); | |
531 | ||
532 | for (i = 0; i < dir->subdirs->size; i++) | |
533 | FcCacheWriteString (fd, (char *)dir->subdirs->strs[i]); | |
534 | FcCacheWriteString (fd, ""); | |
535 | ||
536 | if (write (fd, &dir->metadata, sizeof(FcCache)) != sizeof(FcCache)) | |
537 | { | |
538 | perror ("write metadata"); | |
539 | free (dir->ent); | |
540 | continue; | |
541 | } | |
542 | off = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR)); | |
543 | if (lseek (fd, off, SEEK_SET) != off) | |
544 | { | |
545 | perror ("lseek"); | |
546 | free (dir->ent); | |
547 | continue; | |
548 | } | |
549 | if (dir->metadata.count) | |
550 | { | |
551 | if (write (fd, dir->ent, dir->metadata.count) != dir->metadata.count) | |
552 | { | |
553 | perror ("write dirent"); | |
554 | free (dir->ent); | |
555 | continue; | |
556 | } | |
557 | } | |
558 | free (dir->ent); | |
559 | } | |
560 | FcCacheWriteString (fd, ""); | |
561 | ||
562 | if (close (fd) == -1) | |
563 | goto bail25; | |
564 | ||
565 | close (fd_orig); | |
566 | fd_orig = -1; | |
567 | ||
568 | if (!FcAtomicReplaceOrig (atomic)) | |
569 | goto bail25; | |
570 | ||
571 | FcAtomicUnlock (atomic); | |
572 | FcAtomicDestroy (atomic); | |
573 | ||
574 | cache->updated = FcFalse; | |
575 | return FcTrue; | |
576 | ||
577 | bail4: | |
578 | free (header); | |
579 | bail3: | |
580 | if (fd_orig != -1) | |
581 | close (fd_orig); | |
582 | ||
583 | close (fd); | |
584 | bail25: | |
585 | FcAtomicDeleteNew (atomic); | |
586 | bail2: | |
587 | FcAtomicUnlock (atomic); | |
588 | bail1: | |
589 | FcAtomicDestroy (atomic); | |
590 | return FcFalse; | |
591 | } | |
592 | ||
593 | /* | |
594 | * Find the next presumably-mmapable offset after the supplied file | |
595 | * position. | |
596 | */ | |
597 | static int | |
598 | FcCacheNextOffset(off_t w) | |
599 | { | |
600 | static long pagesize = -1; | |
601 | if (pagesize == -1) | |
602 | pagesize = sysconf(_SC_PAGESIZE); | |
603 | if (w % pagesize == 0) | |
604 | return w; | |
605 | else | |
606 | return ((w / pagesize)+1)*pagesize; | |
607 | } | |
608 | ||
609 | /* return the address of the segment for the provided arch, | |
610 | * or -1 if arch not found */ | |
611 | static off_t | |
612 | FcCacheSkipToArch (int fd, const char * arch) | |
613 | { | |
614 | char candidate_arch_machine_name_count[MACHINE_SIGNATURE_SIZE + 9]; | |
615 | char * candidate_arch; | |
616 | off_t current_arch_start = 0; | |
617 | ||
618 | lseek (fd, 0, SEEK_SET); | |
619 | FcCacheSkipString (fd); | |
620 | current_arch_start = lseek (fd, 0, SEEK_CUR); | |
621 | ||
622 | /* skip arches that are not the current arch */ | |
623 | while (1) | |
624 | { | |
625 | long bs; | |
626 | ||
627 | if (lseek (fd, current_arch_start, SEEK_SET) != current_arch_start) | |
628 | return -1; | |
629 | ||
630 | if (FcCacheReadString (fd, candidate_arch_machine_name_count, | |
631 | sizeof (candidate_arch_machine_name_count)) == 0) | |
632 | return -1; | |
633 | if (!strlen(candidate_arch_machine_name_count)) | |
634 | return -1; | |
635 | bs = strtol(candidate_arch_machine_name_count, &candidate_arch, 16); | |
636 | ||
637 | // count = 0 should probably be distinguished from the !bs condition | |
638 | if (!bs || bs < strlen (candidate_arch_machine_name_count)) | |
639 | return -1; | |
640 | ||
641 | candidate_arch++; /* skip leading space */ | |
642 | ||
643 | if (strcmp (candidate_arch, arch)==0) | |
644 | return current_arch_start; | |
645 | current_arch_start += bs; | |
646 | } | |
647 | ||
648 | return -1; | |
649 | } | |
650 | ||
651 | /* Cuts out the segment at the file pointer (moves everything else | |
652 | * down to cover it), and leaves the file pointer at the end of the | |
653 | * file. */ | |
654 | static FcBool | |
655 | FcCacheCopyOld (int fd, int fd_orig, off_t start) | |
656 | { | |
657 | char * buf = malloc (8192); | |
658 | char candidate_arch_machine_name[MACHINE_SIGNATURE_SIZE + 9]; | |
659 | long bs; | |
660 | int c, bytes_skipped; | |
661 | off_t loc; | |
662 | ||
663 | if (!buf) | |
664 | return FcFalse; | |
665 | ||
666 | loc = 0; | |
667 | lseek (fd, 0, SEEK_SET); lseek (fd_orig, 0, SEEK_SET); | |
668 | FcCacheSkipString (fd); FcCacheSkipString (fd_orig); | |
669 | do | |
670 | { | |
671 | int b = 8192; | |
672 | if (loc + b > start) | |
673 | b = start - loc; | |
674 | ||
675 | if ((c = read (fd_orig, buf, b)) <= 0) | |
676 | break; | |
677 | if (write (fd, buf, c) < 0) | |
678 | goto bail; | |
679 | ||
680 | loc += c; | |
681 | } | |
682 | while (c > 0); | |
683 | ||
684 | lseek (fd, start, SEEK_SET); | |
685 | if (FcCacheReadString (fd, candidate_arch_machine_name, | |
686 | sizeof (candidate_arch_machine_name)) == 0) | |
687 | goto done; | |
688 | if (!strlen(candidate_arch_machine_name)) | |
689 | goto done; | |
690 | ||
691 | bs = strtol(candidate_arch_machine_name, 0, 16); | |
692 | if (bs == 0) | |
693 | goto done; | |
694 | ||
695 | bytes_skipped = 0; | |
696 | do | |
697 | { | |
698 | lseek (fd, start+bs+bytes_skipped, SEEK_SET); | |
699 | if ((c = read (fd, buf, 8192)) <= 0) | |
700 | break; | |
701 | lseek (fd, start+bytes_skipped, SEEK_SET); | |
702 | if (write (fd, buf, c) < 0) | |
703 | goto bail; | |
704 | bytes_skipped += c; | |
705 | } | |
706 | while (c > 0); | |
707 | lseek (fd, start+bytes_skipped, SEEK_SET); | |
708 | ||
709 | done: | |
710 | free (buf); | |
711 | return FcTrue; | |
712 | ||
713 | bail: | |
714 | free (buf); | |
715 | return FcFalse; | |
716 | } | |
717 | ||
718 | /* Does not check that the cache has the appropriate arch section. */ | |
719 | /* Also, this can be fooled if the original location has a stale | |
720 | * cache, and the hashed location has an up-to-date cache. Oh well, | |
721 | * sucks to be you in that case! */ | |
722 | FcBool | |
723 | FcDirCacheValid (const FcChar8 *dir) | |
724 | { | |
725 | struct stat file_stat, dir_stat; | |
726 | int fd; | |
727 | ||
728 | if (stat ((char *) dir, &dir_stat) < 0) | |
729 | return FcFalse; | |
730 | ||
731 | fd = FcDirCacheOpen (dir); | |
732 | ||
733 | if (fd < 0) | |
734 | return FcFalse; | |
735 | if (fstat (fd, &file_stat) < 0) | |
736 | goto bail; | |
737 | ||
738 | close (fd); | |
739 | ||
740 | /* | |
741 | * If the directory has been modified more recently than | |
742 | * the cache file, the cache is not valid | |
743 | */ | |
744 | if (dir_stat.st_mtime > file_stat.st_mtime) | |
745 | return FcFalse; | |
746 | ||
747 | return FcTrue; | |
748 | ||
749 | bail: | |
750 | close (fd); | |
751 | return FcFalse; | |
752 | } | |
753 | ||
754 | /* Assumes that the cache file in 'dir' exists. | |
755 | * Checks that the cache has the appropriate arch section. */ | |
756 | FcBool | |
757 | FcDirCacheHasCurrentArch (const FcChar8 *dir) | |
758 | { | |
759 | int fd; | |
760 | off_t current_arch_start; | |
761 | char *current_arch_machine_name; | |
762 | ||
763 | fd = FcDirCacheOpen (dir); | |
764 | if (fd < 0) | |
765 | goto bail; | |
766 | ||
767 | current_arch_machine_name = FcCacheMachineSignature(); | |
768 | current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name); | |
769 | close (fd); | |
770 | ||
771 | if (current_arch_start < 0) | |
772 | return FcFalse; | |
773 | ||
774 | return FcTrue; | |
775 | ||
776 | bail: | |
777 | return FcFalse; | |
778 | } | |
779 | ||
780 | FcBool | |
781 | FcDirCacheUnlink (const FcChar8 *dir, FcConfig *config) | |
782 | { | |
783 | char *cache_file; | |
784 | char *cache_hashed = 0; | |
785 | int fd, collisions; | |
786 | struct stat cache_stat; | |
787 | char name_buf[FC_MAX_FILE_LEN]; | |
788 | ||
789 | dir = FcConfigNormalizeFontDir (config, dir); | |
790 | cache_file = (char *)FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE); | |
791 | if (!cache_file) | |
792 | return FcFalse; | |
793 | ||
794 | /* First remove normal cache file. */ | |
795 | if (stat ((char *) cache_file, &cache_stat) == 0) | |
796 | unlink ((char *)cache_file); | |
797 | ||
798 | /* Next remove any applicable hashed files. */ | |
799 | fd = -1; collisions = 0; | |
800 | do | |
801 | { | |
802 | if (cache_hashed) | |
803 | FcStrFree ((FcChar8 *)cache_hashed); | |
804 | ||
805 | cache_hashed = FcDirCacheHashName (cache_file, collisions++); | |
806 | if (!cache_hashed) | |
807 | goto bail; | |
808 | ||
809 | if (fd > 0) | |
810 | close (fd); | |
811 | fd = open(cache_hashed, O_RDONLY | O_BINARY); | |
812 | if (fd == -1) | |
813 | { | |
814 | FcStrFree ((FcChar8 *)cache_file); | |
815 | return FcTrue; | |
816 | } | |
817 | ||
818 | if (!FcCacheReadString (fd, name_buf, sizeof (name_buf)) || !strlen(name_buf)) | |
819 | { | |
820 | FcStrFree ((FcChar8 *)cache_hashed); | |
821 | goto bail; | |
822 | } | |
823 | } while (strcmp (name_buf, cache_file) != 0); | |
824 | ||
825 | close (fd); | |
826 | ||
827 | if (stat ((char *) cache_hashed, &cache_stat) == 0 && | |
828 | unlink ((char *)cache_hashed) != 0) | |
829 | { | |
830 | FcStrFree ((FcChar8 *)cache_hashed); | |
831 | goto bail; | |
832 | } | |
833 | ||
834 | FcStrFree ((FcChar8 *)cache_file); | |
835 | FcStrFree ((FcChar8 *)cache_hashed); | |
836 | return FcTrue; | |
837 | ||
838 | bail: | |
839 | FcStrFree ((FcChar8 *)cache_file); | |
840 | return FcFalse; | |
841 | } | |
842 | ||
843 | static int | |
844 | FcCacheReadDirs (FcConfig * config, FcGlobalCache * cache, | |
845 | FcStrList *list, FcFontSet * set, FcStrSet *processed_dirs) | |
846 | { | |
847 | int ret = 0; | |
848 | FcChar8 *dir; | |
849 | FcStrSet *subdirs; | |
850 | FcStrList *sublist; | |
851 | struct stat statb; | |
852 | FcGlobalCacheDir *d; | |
853 | ||
854 | /* | |
855 | * Read in the results from 'list'. | |
856 | */ | |
857 | while ((dir = FcStrListNext (list))) | |
858 | { | |
859 | if (!FcConfigAcceptFilename (config, dir)) | |
860 | continue; | |
861 | ||
862 | /* Skip this directory if already updated | |
863 | * to avoid the looped directories via symlinks | |
864 | * Clearly a dir not in fonts.conf shouldn't be globally cached. | |
865 | */ | |
866 | dir = (FcChar8 *)FcConfigNormalizeFontDir (config, dir); | |
867 | if (!dir) | |
868 | continue; | |
869 | ||
870 | if (FcStrSetMember (processed_dirs, dir)) | |
871 | continue; | |
872 | if (!FcStrSetAdd (processed_dirs, dir)) | |
873 | continue; | |
874 | ||
875 | subdirs = FcStrSetCreate (); | |
876 | if (!subdirs) | |
877 | { | |
878 | fprintf (stderr, "Can't create directory set\n"); | |
879 | ret++; | |
880 | continue; | |
881 | } | |
882 | ||
883 | if (access ((char *) dir, X_OK) < 0) | |
884 | { | |
885 | switch (errno) { | |
886 | case ENOENT: | |
887 | case ENOTDIR: | |
888 | case EACCES: | |
889 | break; | |
890 | default: | |
891 | fprintf (stderr, "\"%s\": ", dir); | |
892 | perror (""); | |
893 | ret++; | |
894 | } | |
895 | FcStrSetDestroy (subdirs); | |
896 | continue; | |
897 | } | |
898 | if (stat ((char *) dir, &statb) == -1) | |
899 | { | |
900 | fprintf (stderr, "\"%s\": ", dir); | |
901 | perror (""); | |
902 | FcStrSetDestroy (subdirs); | |
903 | ret++; | |
904 | continue; | |
905 | } | |
906 | if (!S_ISDIR (statb.st_mode)) | |
907 | { | |
908 | fprintf (stderr, "\"%s\": not a directory, skipping\n", dir); | |
909 | FcStrSetDestroy (subdirs); | |
910 | continue; | |
911 | } | |
912 | if (FcDirCacheValid (dir) && FcDirCacheRead (set, subdirs, dir, config)) | |
913 | { | |
914 | /* if an old entry is found in the global cache, disable it */ | |
915 | if ((d = FcGlobalCacheDirFind (cache, (const char *)dir)) != NULL) | |
916 | { | |
917 | d->state = FcGCDirDisabled; | |
918 | /* save the updated config later without this entry */ | |
919 | cache->updated = FcTrue; | |
920 | } | |
921 | } | |
922 | else | |
923 | { | |
924 | if (FcDebug () & FC_DBG_FONTSET) | |
925 | printf ("cache scan dir %s\n", dir); | |
926 | ||
927 | FcDirScanConfig (set, subdirs, cache, | |
928 | config->blanks, dir, FcFalse, config); | |
929 | } | |
930 | sublist = FcStrListCreate (subdirs); | |
931 | FcStrSetDestroy (subdirs); | |
932 | if (!sublist) | |
933 | { | |
934 | fprintf (stderr, "Can't create subdir list in \"%s\"\n", dir); | |
935 | ret++; | |
936 | continue; | |
937 | } | |
938 | ret += FcCacheReadDirs (config, cache, sublist, set, processed_dirs); | |
939 | } | |
940 | FcStrListDone (list); | |
941 | return ret; | |
942 | } | |
943 | ||
944 | FcFontSet * | |
945 | FcCacheRead (FcConfig *config, FcGlobalCache * cache) | |
946 | { | |
947 | FcFontSet *s = FcFontSetCreate(); | |
948 | FcStrSet *processed_dirs; | |
949 | ||
950 | if (!s) | |
951 | return 0; | |
952 | ||
953 | processed_dirs = FcStrSetCreate(); | |
954 | if (!processed_dirs) | |
955 | goto bail; | |
956 | ||
957 | if (FcCacheReadDirs (config, cache, FcConfigGetConfigDirs (config), s, processed_dirs)) | |
958 | goto bail1; | |
959 | ||
960 | FcStrSetDestroy (processed_dirs); | |
961 | return s; | |
962 | ||
963 | bail1: | |
964 | FcStrSetDestroy (processed_dirs); | |
965 | bail: | |
966 | FcFontSetDestroy (s); | |
967 | return 0; | |
968 | } | |
969 | ||
970 | static const char bin2hex[] = { '0', '1', '2', '3', | |
971 | '4', '5', '6', '7', | |
972 | '8', '9', 'a', 'b', | |
973 | 'c', 'd', 'e', 'f' }; | |
974 | ||
975 | static char * | |
976 | FcDirCacheHashName (char * cache_file, int collisions) | |
977 | { | |
978 | unsigned char hash[16], hex_hash[33]; | |
979 | char *cache_hashed; | |
980 | unsigned char uscore = '_'; | |
981 | int cnt, i; | |
982 | FcChar8 *tmp; | |
983 | struct MD5Context ctx; | |
984 | ||
985 | MD5Init (&ctx); | |
986 | MD5Update (&ctx, (unsigned char *)cache_file, strlen (cache_file)); | |
987 | ||
988 | for (i = 0; i < collisions; i++) | |
989 | MD5Update (&ctx, &uscore, 1); | |
990 | ||
991 | MD5Final (hash, &ctx); | |
992 | ||
993 | for (cnt = 0; cnt < 16; ++cnt) | |
994 | { | |
995 | hex_hash[2*cnt] = bin2hex[hash[cnt] >> 4]; | |
996 | hex_hash[2*cnt+1] = bin2hex[hash[cnt] & 0xf]; | |
997 | } | |
998 | hex_hash[32] = 0; | |
999 | ||
1000 | tmp = FcStrPlus ((FcChar8 *)hex_hash, (FcChar8 *)FC_CACHE_SUFFIX); | |
1001 | if (!tmp) | |
1002 | return 0; | |
1003 | ||
1004 | cache_hashed = (char *)FcStrPlus ((FcChar8 *)PKGCACHEDIR"/", tmp); | |
1005 | free (tmp); | |
1006 | ||
1007 | return cache_hashed; | |
1008 | } | |
1009 | ||
1010 | /* Opens the hashed name for cache_file. | |
1011 | * This would fail in the unlikely event of a collision and subsequent | |
1012 | * removal of the file which originally caused the collision. */ | |
1013 | static int | |
1014 | FcDirCacheOpen (const FcChar8 *dir) | |
1015 | { | |
1016 | FcBool found; | |
1017 | int fd = -1, collisions = 0; | |
1018 | char *cache_file, *cache_hashed; | |
1019 | char name_buf[FC_MAX_FILE_LEN]; | |
1020 | struct stat dir_stat; | |
1021 | ||
1022 | if (stat ((char *)dir, &dir_stat) == -1) | |
1023 | return -1; | |
1024 | ||
1025 | cache_file = (char *)FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE); | |
1026 | if (!cache_file) | |
1027 | return -1; | |
1028 | ||
1029 | found = FcFalse; | |
1030 | do | |
1031 | { | |
1032 | struct stat c; | |
1033 | FcChar8 *name_buf_dir; | |
1034 | ||
1035 | if (fd >= 0) | |
1036 | close (fd); | |
1037 | ||
1038 | cache_hashed = FcDirCacheHashName (cache_file, collisions++); | |
1039 | if (!cache_hashed) | |
1040 | { | |
1041 | FcStrFree ((FcChar8 *)cache_file); | |
1042 | return -1; | |
1043 | } | |
1044 | ||
1045 | fd = open(cache_hashed, O_RDONLY | O_BINARY); | |
1046 | FcStrFree ((FcChar8 *)cache_hashed); | |
1047 | ||
1048 | if (fd == -1) | |
1049 | break; | |
1050 | if (!FcCacheReadString (fd, name_buf, sizeof (name_buf)) || | |
1051 | !strlen(name_buf)) | |
1052 | break; | |
1053 | ||
1054 | name_buf_dir = FcStrDirname ((FcChar8 *)name_buf); | |
1055 | if (stat ((char *)name_buf_dir, &c) == -1) | |
1056 | { | |
1057 | FcStrFree (name_buf_dir); | |
1058 | continue; | |
1059 | } | |
1060 | FcStrFree (name_buf_dir); | |
1061 | found = (c.st_ino == dir_stat.st_ino) && (c.st_dev == dir_stat.st_dev); | |
1062 | } while (!found); | |
1063 | ||
1064 | if (!found || fd < 0) | |
1065 | { | |
1066 | if (fd >= 0) | |
1067 | close (fd); | |
1068 | fd = open(cache_file, O_RDONLY | O_BINARY); | |
1069 | } | |
1070 | ||
1071 | FcStrFree ((FcChar8 *)cache_file); | |
1072 | return fd; | |
1073 | } | |
1074 | ||
1075 | /* read serialized state from the cache file */ | |
1076 | FcBool | |
1077 | FcDirCacheRead (FcFontSet * set, FcStrSet * dirs, const FcChar8 *dir, FcConfig *config) | |
1078 | { | |
1079 | int fd; | |
1080 | char *current_arch_machine_name; | |
1081 | char candidate_arch_machine_name[9+MACHINE_SIGNATURE_SIZE]; | |
1082 | off_t current_arch_start = 0; | |
1083 | char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1]; | |
1084 | ||
1085 | fd = FcDirCacheOpen (dir); | |
1086 | if (fd < 0) | |
1087 | goto bail; | |
1088 | ||
1089 | current_arch_machine_name = FcCacheMachineSignature(); | |
1090 | current_arch_start = FcCacheSkipToArch(fd, | |
1091 | current_arch_machine_name); | |
1092 | if (current_arch_start < 0) | |
1093 | goto bail1; | |
1094 | ||
1095 | lseek (fd, current_arch_start, SEEK_SET); | |
1096 | if (FcCacheReadString (fd, candidate_arch_machine_name, | |
1097 | sizeof (candidate_arch_machine_name)) == 0) | |
1098 | goto bail1; | |
1099 | ||
1100 | while (FcCacheReadString (fd, subdirName, sizeof (subdirName)) && strlen (subdirName) > 0) | |
1101 | FcStrSetAdd (dirs, (FcChar8 *)subdirName); | |
1102 | ||
1103 | if (!FcDirCacheConsume (fd, (const char *)dir, set, config)) | |
1104 | goto bail1; | |
1105 | ||
1106 | close(fd); | |
1107 | return FcTrue; | |
1108 | ||
1109 | bail1: | |
1110 | close (fd); | |
1111 | bail: | |
1112 | return FcFalse; | |
1113 | } | |
1114 | ||
1115 | static FcBool | |
1116 | FcDirCacheConsume (int fd, const char * dir, FcFontSet *set, FcConfig *config) | |
1117 | { | |
1118 | FcCache metadata; | |
1119 | void * current_dir_block; | |
1120 | off_t pos; | |
1121 | ||
1122 | if (read(fd, &metadata, sizeof(FcCache)) != sizeof(FcCache)) | |
1123 | return FcFalse; | |
1124 | if (metadata.magic != FC_CACHE_MAGIC) | |
1125 | return FcFalse; | |
1126 | ||
1127 | if (!metadata.count) | |
1128 | { | |
1129 | pos = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR)); | |
1130 | lseek (fd, pos, SEEK_SET); | |
1131 | if (config) | |
1132 | FcConfigAddFontDir (config, (FcChar8 *)dir); | |
1133 | return FcTrue; | |
1134 | } | |
1135 | ||
1136 | pos = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR)); | |
1137 | current_dir_block = mmap (0, metadata.count, | |
1138 | PROT_READ, MAP_SHARED, fd, pos); | |
1139 | lseek (fd, pos+metadata.count, SEEK_SET); | |
1140 | if (current_dir_block == MAP_FAILED) | |
1141 | return FcFalse; | |
1142 | ||
1143 | FcCacheAddBankDir (metadata.bank, dir); | |
1144 | if (config) | |
1145 | FcConfigAddFontDir (config, (FcChar8 *)dir); | |
1146 | ||
1147 | if (!FcFontSetUnserialize (&metadata, set, current_dir_block)) | |
1148 | return FcFalse; | |
1149 | ||
1150 | return FcTrue; | |
1151 | } | |
1152 | ||
1153 | static void * | |
1154 | FcDirCacheProduce (FcFontSet *set, FcCache *metadata) | |
1155 | { | |
1156 | void * current_dir_block, * final_dir_block; | |
1157 | static unsigned int rand_state = 0; | |
1158 | int bank, needed_bytes_no_align; | |
1159 | ||
1160 | if (!rand_state) | |
1161 | rand_state = time(0L); | |
1162 | bank = rand_r(&rand_state); | |
1163 | ||
1164 | while (FcCacheHaveBank(bank)) | |
1165 | bank = rand_r(&rand_state); | |
1166 | ||
1167 | memset (metadata, 0, sizeof(FcCache)); | |
1168 | FcFontSetNewBank(); | |
1169 | needed_bytes_no_align = FcFontSetNeededBytes (set); | |
1170 | metadata->count = needed_bytes_no_align + | |
1171 | FcFontSetNeededBytesAlign (); | |
1172 | metadata->magic = FC_CACHE_MAGIC; | |
1173 | metadata->bank = bank; | |
1174 | ||
1175 | if (!needed_bytes_no_align) /* not a failure, no fonts to write */ | |
1176 | { | |
1177 | /* no, you don't really need to write any bytes at all. */ | |
1178 | metadata->count = 0; | |
1179 | return 0; | |
1180 | } | |
1181 | ||
1182 | current_dir_block = malloc (metadata->count); | |
1183 | if (!current_dir_block) | |
1184 | goto bail; | |
1185 | // shut up valgrind | |
1186 | memset (current_dir_block, 0, metadata->count); | |
1187 | final_dir_block = FcFontSetDistributeBytes (metadata, current_dir_block); | |
1188 | ||
1189 | if ((void *)((char *)current_dir_block+metadata->count) < final_dir_block) | |
1190 | goto bail; | |
1191 | ||
1192 | if (!FcFontSetSerialize (bank, set)) | |
1193 | goto bail; | |
1194 | ||
1195 | return current_dir_block; | |
1196 | ||
1197 | bail: | |
1198 | free (current_dir_block); | |
1199 | return 0; | |
1200 | } | |
1201 | ||
1202 | /* write serialized state to the cache file */ | |
1203 | FcBool | |
1204 | FcDirCacheWrite (FcFontSet *set, FcStrSet *dirs, const FcChar8 *dir) | |
1205 | { | |
1206 | char *cache_file; | |
1207 | char *cache_hashed; | |
1208 | int fd, fd_orig, i, dirs_count; | |
1209 | FcAtomic *atomic; | |
1210 | FcCache metadata; | |
1211 | off_t current_arch_start = 0, truncate_to; | |
1212 | char name_buf[FC_MAX_FILE_LEN]; | |
1213 | int collisions; | |
1214 | ||
1215 | char *current_arch_machine_name, * header; | |
1216 | void *current_dir_block = 0; | |
1217 | ||
1218 | dir = FcConfigNormalizeFontDir (FcConfigGetCurrent(), dir); | |
1219 | if (!dir) | |
1220 | return FcFalse; | |
1221 | ||
1222 | cache_file = (char *)FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE); | |
1223 | if (!cache_file) | |
1224 | goto bail; | |
1225 | ||
1226 | /* Ensure that we're not trampling a cache for some other dir. */ | |
1227 | /* This is slightly different from FcDirCacheOpen, since it | |
1228 | * needs the filename, not the file descriptor. */ | |
1229 | fd = -1; collisions = 0; | |
1230 | do | |
1231 | { | |
1232 | cache_hashed = FcDirCacheHashName (cache_file, collisions++); | |
1233 | if (!cache_hashed) | |
1234 | goto bail0; | |
1235 | ||
1236 | if (fd > 0) | |
1237 | close (fd); | |
1238 | fd = open(cache_hashed, O_RDONLY | O_BINARY); | |
1239 | if (fd == -1) | |
1240 | break; | |
1241 | if(!FcCacheReadString (fd, name_buf, sizeof (name_buf)) || !strlen(name_buf)) | |
1242 | { | |
1243 | close (fd); | |
1244 | continue; | |
1245 | } | |
1246 | close (fd); | |
1247 | ||
1248 | if (strcmp (name_buf, cache_file) != 0) | |
1249 | continue; | |
1250 | ||
1251 | break; | |
1252 | } while (1); | |
1253 | ||
1254 | current_dir_block = FcDirCacheProduce (set, &metadata); | |
1255 | ||
1256 | if (metadata.count && !current_dir_block) | |
1257 | goto bail1; | |
1258 | ||
1259 | if (FcDebug () & FC_DBG_CACHE) | |
1260 | printf ("FcDirCacheWriteDir cache_file \"%s\"\n", cache_file); | |
1261 | ||
1262 | atomic = FcAtomicCreate ((FcChar8 *)cache_hashed); | |
1263 | if (!atomic) | |
1264 | goto bail1; | |
1265 | ||
1266 | if (!FcAtomicLock (atomic)) | |
1267 | { | |
1268 | /* Now try rewriting the original version of the file. */ | |
1269 | FcAtomicDestroy (atomic); | |
1270 | ||
1271 | atomic = FcAtomicCreate ((FcChar8 *)cache_file); | |
1272 | fd_orig = open (cache_file, O_RDONLY | O_BINARY); | |
1273 | if (fd_orig == -1) | |
1274 | fd_orig = open((char *)FcAtomicOrigFile (atomic), O_RDONLY | O_BINARY); | |
1275 | ||
1276 | fd = open((char *)FcAtomicNewFile (atomic), O_RDWR | O_CREAT | O_BINARY, 0666); | |
1277 | if (fd == -1) | |
1278 | goto bail2; | |
1279 | } | |
1280 | ||
1281 | /* In all cases, try opening the real location of the cache file first. */ | |
1282 | /* (even if that's not atomic.) */ | |
1283 | fd_orig = open (cache_file, O_RDONLY | O_BINARY); | |
1284 | if (fd_orig == -1) | |
1285 | fd_orig = open((char *)FcAtomicOrigFile (atomic), O_RDONLY | O_BINARY); | |
1286 | ||
1287 | fd = open((char *)FcAtomicNewFile (atomic), O_RDWR | O_CREAT | O_BINARY, 0666); | |
1288 | if (fd == -1) | |
1289 | goto bail3; | |
1290 | ||
1291 | FcCacheWriteString (fd, cache_file); | |
1292 | ||
1293 | current_arch_machine_name = FcCacheMachineSignature (); | |
1294 | current_arch_start = 0; | |
1295 | ||
1296 | if (fd_orig != -1) | |
1297 | current_arch_start = | |
1298 | FcCacheSkipToArch(fd_orig, current_arch_machine_name); | |
1299 | ||
1300 | if (current_arch_start < 0) | |
1301 | { | |
1302 | off_t i = lseek(fd_orig, 0, SEEK_END); | |
1303 | current_arch_start = FcCacheNextOffset (i); | |
1304 | } | |
1305 | ||
1306 | if (fd_orig != -1 && !FcCacheCopyOld(fd, fd_orig, current_arch_start)) | |
1307 | goto bail4; | |
1308 | ||
1309 | if (fd_orig != -1) | |
1310 | close (fd_orig); | |
1311 | ||
1312 | current_arch_start = lseek(fd, 0, SEEK_CUR); | |
1313 | if (ftruncate (fd, current_arch_start) == -1) | |
1314 | goto bail4; | |
1315 | ||
1316 | /* allocate space for subdir names in this block */ | |
1317 | dirs_count = 0; | |
1318 | for (i = 0; i < dirs->size; i++) | |
1319 | dirs_count += strlen((char *)dirs->strs[i]) + 1; | |
1320 | dirs_count ++; | |
1321 | ||
1322 | /* now write the address of the next offset */ | |
1323 | truncate_to = FcCacheNextOffset (FcCacheNextOffset (current_arch_start + sizeof (FcCache) + dirs_count) + metadata.count) - current_arch_start; | |
1324 | header = malloc (10 + strlen (current_arch_machine_name)); | |
1325 | if (!header) | |
1326 | goto bail4; | |
1327 | sprintf (header, "%8x ", (int)truncate_to); | |
1328 | strcat (header, current_arch_machine_name); | |
1329 | if (!FcCacheWriteString (fd, header)) | |
1330 | goto bail5; | |
1331 | ||
1332 | for (i = 0; i < dirs->size; i++) | |
1333 | FcCacheWriteString (fd, (char *)dirs->strs[i]); | |
1334 | FcCacheWriteString (fd, ""); | |
1335 | ||
1336 | if (write (fd, &metadata, sizeof(FcCache)) != sizeof(FcCache)) | |
1337 | { | |
1338 | perror("write metadata"); | |
1339 | goto bail5; | |
1340 | } | |
1341 | if (metadata.count) | |
1342 | { | |
1343 | off_t off = FcCacheNextOffset (lseek(fd, 0, SEEK_END)); | |
1344 | if (lseek (fd, off, SEEK_SET) != off) | |
1345 | perror("lseek"); | |
1346 | else if (write (fd, current_dir_block, metadata.count) != | |
1347 | metadata.count) | |
1348 | perror("write current_dir_block"); | |
1349 | free (current_dir_block); | |
1350 | } | |
1351 | ||
1352 | /* this actually serves to pad out the cache file, if needed */ | |
1353 | if (ftruncate (fd, current_arch_start + truncate_to) == -1) | |
1354 | goto bail5; | |
1355 | ||
1356 | free (header); | |
1357 | close(fd); | |
1358 | if (!FcAtomicReplaceOrig(atomic)) | |
1359 | goto bail5; | |
1360 | FcStrFree ((FcChar8 *)cache_hashed); | |
1361 | FcStrFree ((FcChar8 *)cache_file); | |
1362 | FcAtomicUnlock (atomic); | |
1363 | FcAtomicDestroy (atomic); | |
1364 | return FcTrue; | |
1365 | ||
1366 | bail5: | |
1367 | free (header); | |
1368 | bail4: | |
1369 | close (fd); | |
1370 | bail3: | |
1371 | FcAtomicUnlock (atomic); | |
1372 | bail2: | |
1373 | FcAtomicDestroy (atomic); | |
1374 | bail1: | |
1375 | FcStrFree ((FcChar8 *)cache_hashed); | |
1376 | bail0: | |
1377 | unlink ((char *)cache_file); | |
1378 | FcStrFree ((FcChar8 *)cache_file); | |
1379 | if (current_dir_block) | |
1380 | free (current_dir_block); | |
1381 | bail: | |
1382 | return FcFalse; | |
1383 | } | |
1384 | ||
1385 | static char * | |
1386 | FcCacheMachineSignature () | |
1387 | { | |
1388 | static char buf[MACHINE_SIGNATURE_SIZE]; | |
1389 | int32_t magic = ENDIAN_TEST; | |
1390 | char * m = (char *)&magic; | |
1391 | ||
1392 | sprintf (buf, "%2x%2x%2x%2x " | |
1393 | "%4x %4x %4x %4x %4x %4x %4x %4x %4x %4x %4x %4x " | |
1394 | "%4x %4x %4x %4x %4x %4x %4x %4x\n", | |
1395 | m[0], m[1], m[2], m[3], | |
1396 | (unsigned int)sizeof (char), | |
1397 | (unsigned int)sizeof (char *), | |
1398 | (unsigned int)sizeof (int), | |
1399 | (unsigned int)sizeof (FcPattern), | |
1400 | (unsigned int)sizeof (FcPatternEltPtr), | |
1401 | (unsigned int)sizeof (struct _FcPatternElt *), | |
1402 | (unsigned int)sizeof (FcPatternElt), | |
1403 | (unsigned int)sizeof (FcObjectPtr), | |
1404 | (unsigned int)sizeof (FcValueListPtr), | |
1405 | (unsigned int)sizeof (FcValue), | |
1406 | (unsigned int)sizeof (FcValueBinding), | |
1407 | (unsigned int)sizeof (struct _FcValueList *), | |
1408 | (unsigned int)sizeof (FcCharSet), | |
1409 | (unsigned int)sizeof (FcCharLeaf **), | |
1410 | (unsigned int)sizeof (FcChar16 *), | |
1411 | (unsigned int)sizeof (FcChar16), | |
1412 | (unsigned int)sizeof (FcCharLeaf), | |
1413 | (unsigned int)sizeof (FcChar32), | |
1414 | (unsigned int)sizeof (FcCache), | |
1415 | (unsigned int)sysconf(_SC_PAGESIZE)); | |
1416 | ||
1417 | return buf; | |
1418 | } | |
1419 | ||
1420 | static int banks_ptr = 0, banks_alloc = 0; | |
1421 | int * _fcBankId = 0, * _fcBankIdx = 0; | |
1422 | static const char ** bankDirs = 0; | |
1423 | ||
1424 | static FcBool | |
1425 | FcCacheHaveBank (int bank) | |
1426 | { | |
1427 | int i; | |
1428 | ||
1429 | if (bank < FC_BANK_FIRST) | |
1430 | return FcTrue; | |
1431 | ||
1432 | for (i = 0; i < banks_ptr; i++) | |
1433 | if (_fcBankId[i] == bank) | |
1434 | return FcTrue; | |
1435 | ||
1436 | return FcFalse; | |
1437 | } | |
1438 | ||
1439 | int | |
1440 | FcCacheBankToIndexMTF (int bank) | |
1441 | { | |
1442 | int i, j; | |
1443 | ||
1444 | for (i = 0; i < banks_ptr; i++) | |
1445 | if (_fcBankId[_fcBankIdx[i]] == bank) | |
1446 | { | |
1447 | int t = _fcBankIdx[i]; | |
1448 | ||
1449 | for (j = i; j > 0; j--) | |
1450 | _fcBankIdx[j] = _fcBankIdx[j-1]; | |
1451 | _fcBankIdx[0] = t; | |
1452 | return t; | |
1453 | } | |
1454 | ||
1455 | if (banks_ptr >= banks_alloc) | |
1456 | { | |
1457 | int * b, * bidx; | |
1458 | const char ** bds; | |
1459 | ||
1460 | b = realloc (_fcBankId, (banks_alloc + 4) * sizeof(int)); | |
1461 | if (!b) | |
1462 | return -1; | |
1463 | _fcBankId = b; | |
1464 | ||
1465 | bidx = realloc (_fcBankIdx, (banks_alloc + 4) * sizeof(int)); | |
1466 | if (!bidx) | |
1467 | return -1; | |
1468 | _fcBankIdx = bidx; | |
1469 | ||
1470 | bds = realloc (bankDirs, (banks_alloc + 4) * sizeof (char *)); | |
1471 | if (!bds) | |
1472 | return -1; | |
1473 | bankDirs = bds; | |
1474 | ||
1475 | banks_alloc += 4; | |
1476 | } | |
1477 | ||
1478 | i = banks_ptr++; | |
1479 | _fcBankId[i] = bank; | |
1480 | _fcBankIdx[i] = i; | |
1481 | return i; | |
1482 | } | |
1483 | ||
1484 | static void | |
1485 | FcCacheAddBankDir (int bank, const char * dir) | |
1486 | { | |
1487 | int bi = FcCacheBankToIndexMTF (bank); | |
1488 | ||
1489 | if (bi < 0) | |
1490 | return; | |
1491 | ||
1492 | bankDirs[bi] = (const char *)FcStrCopy ((FcChar8 *)dir); | |
1493 | } | |
1494 | ||
1495 | const char * | |
1496 | FcCacheFindBankDir (int bank) | |
1497 | { | |
1498 | int bi = FcCacheBankToIndex (bank); | |
1499 | return bankDirs[bi]; | |
1500 | } | |
1501 | ||
1502 | /* | |
1503 | * This code implements the MD5 message-digest algorithm. | |
1504 | * The algorithm is due to Ron Rivest. This code was | |
1505 | * written by Colin Plumb in 1993, no copyright is claimed. | |
1506 | * This code is in the public domain; do with it what you wish. | |
1507 | * | |
1508 | * Equivalent code is available from RSA Data Security, Inc. | |
1509 | * This code has been tested against that, and is equivalent, | |
1510 | * except that you don't need to include two pages of legalese | |
1511 | * with every copy. | |
1512 | * | |
1513 | * To compute the message digest of a chunk of bytes, declare an | |
1514 | * MD5Context structure, pass it to MD5Init, call MD5Update as | |
1515 | * needed on buffers full of bytes, and then call MD5Final, which | |
1516 | * will fill a supplied 16-byte array with the digest. | |
1517 | */ | |
1518 | ||
1519 | #ifndef HIGHFIRST | |
1520 | #define byteReverse(buf, len) /* Nothing */ | |
1521 | #else | |
1522 | /* | |
1523 | * Note: this code is harmless on little-endian machines. | |
1524 | */ | |
1525 | void byteReverse(unsigned char *buf, unsigned longs) | |
1526 | { | |
1527 | FcChar32 t; | |
1528 | do { | |
1529 | t = (FcChar32) ((unsigned) buf[3] << 8 | buf[2]) << 16 | | |
1530 | ((unsigned) buf[1] << 8 | buf[0]); | |
1531 | *(FcChar32 *) buf = t; | |
1532 | buf += 4; | |
1533 | } while (--longs); | |
1534 | } | |
1535 | #endif | |
1536 | ||
1537 | /* | |
1538 | * Start MD5 accumulation. Set bit count to 0 and buffer to mysterious | |
1539 | * initialization constants. | |
1540 | */ | |
1541 | static void MD5Init(struct MD5Context *ctx) | |
1542 | { | |
1543 | ctx->buf[0] = 0x67452301; | |
1544 | ctx->buf[1] = 0xefcdab89; | |
1545 | ctx->buf[2] = 0x98badcfe; | |
1546 | ctx->buf[3] = 0x10325476; | |
1547 | ||
1548 | ctx->bits[0] = 0; | |
1549 | ctx->bits[1] = 0; | |
1550 | } | |
1551 | ||
1552 | /* | |
1553 | * Update context to reflect the concatenation of another buffer full | |
1554 | * of bytes. | |
1555 | */ | |
1556 | static void MD5Update(struct MD5Context *ctx, unsigned char *buf, unsigned len) | |
1557 | { | |
1558 | FcChar32 t; | |
1559 | ||
1560 | /* Update bitcount */ | |
1561 | ||
1562 | t = ctx->bits[0]; | |
1563 | if ((ctx->bits[0] = t + ((FcChar32) len << 3)) < t) | |
1564 | ctx->bits[1]++; /* Carry from low to high */ | |
1565 | ctx->bits[1] += len >> 29; | |
1566 | ||
1567 | t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data */ | |
1568 | ||
1569 | /* Handle any leading odd-sized chunks */ | |
1570 | ||
1571 | if (t) { | |
1572 | unsigned char *p = (unsigned char *) ctx->in + t; | |
1573 | ||
1574 | t = 64 - t; | |
1575 | if (len < t) { | |
1576 | memcpy(p, buf, len); | |
1577 | return; | |
1578 | } | |
1579 | memcpy(p, buf, t); | |
1580 | byteReverse(ctx->in, 16); | |
1581 | MD5Transform(ctx->buf, (FcChar32 *) ctx->in); | |
1582 | buf += t; | |
1583 | len -= t; | |
1584 | } | |
1585 | /* Process data in 64-byte chunks */ | |
1586 | ||
1587 | while (len >= 64) { | |
1588 | memcpy(ctx->in, buf, 64); | |
1589 | byteReverse(ctx->in, 16); | |
1590 | MD5Transform(ctx->buf, (FcChar32 *) ctx->in); | |
1591 | buf += 64; | |
1592 | len -= 64; | |
1593 | } | |
1594 | ||
1595 | /* Handle any remaining bytes of data. */ | |
1596 | ||
1597 | memcpy(ctx->in, buf, len); | |
1598 | } | |
1599 | ||
1600 | /* | |
1601 | * Final wrapup - pad to 64-byte boundary with the bit pattern | |
1602 | * 1 0* (64-bit count of bits processed, MSB-first) | |
1603 | */ | |
1604 | static void MD5Final(unsigned char digest[16], struct MD5Context *ctx) | |
1605 | { | |
1606 | unsigned count; | |
1607 | unsigned char *p; | |
1608 | ||
1609 | /* Compute number of bytes mod 64 */ | |
1610 | count = (ctx->bits[0] >> 3) & 0x3F; | |
1611 | ||
1612 | /* Set the first char of padding to 0x80. This is safe since there is | |
1613 | always at least one byte free */ | |
1614 | p = ctx->in + count; | |
1615 | *p++ = 0x80; | |
1616 | ||
1617 | /* Bytes of padding needed to make 64 bytes */ | |
1618 | count = 64 - 1 - count; | |
1619 | ||
1620 | /* Pad out to 56 mod 64 */ | |
1621 | if (count < 8) { | |
1622 | /* Two lots of padding: Pad the first block to 64 bytes */ | |
1623 | memset(p, 0, count); | |
1624 | byteReverse(ctx->in, 16); | |
1625 | MD5Transform(ctx->buf, (FcChar32 *) ctx->in); | |
1626 | ||
1627 | /* Now fill the next block with 56 bytes */ | |
1628 | memset(ctx->in, 0, 56); | |
1629 | } else { | |
1630 | /* Pad block to 56 bytes */ | |
1631 | memset(p, 0, count - 8); | |
1632 | } | |
1633 | byteReverse(ctx->in, 14); | |
1634 | ||
1635 | /* Append length in bits and transform */ | |
1636 | ((FcChar32 *) ctx->in)[14] = ctx->bits[0]; | |
1637 | ((FcChar32 *) ctx->in)[15] = ctx->bits[1]; | |
1638 | ||
1639 | MD5Transform(ctx->buf, (FcChar32 *) ctx->in); | |
1640 | byteReverse((unsigned char *) ctx->buf, 4); | |
1641 | memcpy(digest, ctx->buf, 16); | |
1642 | memset(ctx, 0, sizeof(ctx)); /* In case it's sensitive */ | |
1643 | } | |
1644 | ||
1645 | ||
1646 | /* The four core functions - F1 is optimized somewhat */ | |
1647 | ||
1648 | /* #define F1(x, y, z) (x & y | ~x & z) */ | |
1649 | #define F1(x, y, z) (z ^ (x & (y ^ z))) | |
1650 | #define F2(x, y, z) F1(z, x, y) | |
1651 | #define F3(x, y, z) (x ^ y ^ z) | |
1652 | #define F4(x, y, z) (y ^ (x | ~z)) | |
1653 | ||
1654 | /* This is the central step in the MD5 algorithm. */ | |
1655 | #define MD5STEP(f, w, x, y, z, data, s) \ | |
1656 | ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x ) | |
1657 | ||
1658 | /* | |
1659 | * The core of the MD5 algorithm, this alters an existing MD5 hash to | |
1660 | * reflect the addition of 16 longwords of new data. MD5Update blocks | |
1661 | * the data and converts bytes into longwords for this routine. | |
1662 | */ | |
1663 | static void MD5Transform(FcChar32 buf[4], FcChar32 in[16]) | |
1664 | { | |
1665 | register FcChar32 a, b, c, d; | |
1666 | ||
1667 | a = buf[0]; | |
1668 | b = buf[1]; | |
1669 | c = buf[2]; | |
1670 | d = buf[3]; | |
1671 | ||
1672 | MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7); | |
1673 | MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12); | |
1674 | MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17); | |
1675 | MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22); | |
1676 | MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7); | |
1677 | MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12); | |
1678 | MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17); | |
1679 | MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22); | |
1680 | MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7); | |
1681 | MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12); | |
1682 | MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17); | |
1683 | MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22); | |
1684 | MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7); | |
1685 | MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12); | |
1686 | MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17); | |
1687 | MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22); | |
1688 | ||
1689 | MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5); | |
1690 | MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9); | |
1691 | MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14); | |
1692 | MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20); | |
1693 | MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5); | |
1694 | MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9); | |
1695 | MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14); | |
1696 | MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20); | |
1697 | MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5); | |
1698 | MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9); | |
1699 | MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14); | |
1700 | MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20); | |
1701 | MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5); | |
1702 | MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9); | |
1703 | MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14); | |
1704 | MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20); | |
1705 | ||
1706 | MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4); | |
1707 | MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11); | |
1708 | MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16); | |
1709 | MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23); | |
1710 | MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4); | |
1711 | MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11); | |
1712 | MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16); | |
1713 | MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23); | |
1714 | MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4); | |
1715 | MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11); | |
1716 | MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16); | |
1717 | MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23); | |
1718 | MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4); | |
1719 | MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11); | |
1720 | MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16); | |
1721 | MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23); | |
1722 | ||
1723 | MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6); | |
1724 | MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10); | |
1725 | MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15); | |
1726 | MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21); | |
1727 | MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6); | |
1728 | MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10); | |
1729 | MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15); | |
1730 | MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21); | |
1731 | MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6); | |
1732 | MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10); | |
1733 | MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15); | |
1734 | MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21); | |
1735 | MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6); | |
1736 | MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10); | |
1737 | MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15); | |
1738 | MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21); | |
1739 | ||
1740 | buf[0] += a; | |
1741 | buf[1] += b; | |
1742 | buf[2] += c; | |
1743 | buf[3] += d; | |
1744 | } |