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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 "fcint.h" | |
27 | #include <fcntl.h> | |
28 | #include <dirent.h> | |
29 | #include <string.h> | |
30 | #include <sys/types.h> | |
31 | #if defined(HAVE_MMAP) || defined(__CYGWIN__) | |
32 | # include <unistd.h> | |
33 | # include <sys/mman.h> | |
34 | #elif defined(_WIN32) | |
35 | # include <windows.h> | |
36 | #endif | |
37 | ||
38 | #define ENDIAN_TEST 0x12345678 | |
39 | #define MACHINE_SIGNATURE_SIZE (9 + 5*20 + 1) | |
40 | /* for when we don't have sysconf: */ | |
41 | #define FC_HARDCODED_PAGESIZE 8192 | |
42 | ||
43 | #ifndef O_BINARY | |
44 | #define O_BINARY 0 | |
45 | #endif | |
46 | ||
47 | static int | |
48 | FcDirCacheOpen (FcConfig *config, const FcChar8 *dir, FcChar8 **cache_path); | |
49 | ||
50 | static off_t | |
51 | FcCacheSkipToArch (int fd, const char * arch); | |
52 | ||
53 | static FcBool | |
54 | FcCacheCopyOld (int fd, int fd_orig, off_t start); | |
55 | ||
56 | static void * | |
57 | FcDirCacheProduce (FcFontSet *set, FcCache * metadata); | |
58 | ||
59 | static FcBool | |
60 | FcDirCacheConsume (int fd, const char * dir, FcFontSet *set, FcConfig *config); | |
61 | ||
62 | static int | |
63 | FcCacheNextOffset(off_t w); | |
64 | ||
65 | static char * | |
66 | FcCacheMachineSignature (void); | |
67 | ||
68 | static FcBool | |
69 | FcCacheHaveBank (int bank); | |
70 | ||
71 | static void | |
72 | FcCacheAddBankDir (int bank, const char * dir); | |
73 | ||
74 | struct MD5Context { | |
75 | FcChar32 buf[4]; | |
76 | FcChar32 bits[2]; | |
77 | unsigned char in[64]; | |
78 | }; | |
79 | ||
80 | static void MD5Init(struct MD5Context *ctx); | |
81 | static void MD5Update(struct MD5Context *ctx, unsigned char *buf, unsigned len); | |
82 | static void MD5Final(unsigned char digest[16], struct MD5Context *ctx); | |
83 | static void MD5Transform(FcChar32 buf[4], FcChar32 in[16]); | |
84 | ||
85 | #define FC_DBG_CACHE_REF 1024 | |
86 | ||
87 | static char * | |
88 | FcCacheReadString (int fd, char *dest, int len) | |
89 | { | |
90 | int size; | |
91 | int slen; | |
92 | ||
93 | if (len == 0) | |
94 | return 0; | |
95 | ||
96 | size = read (fd, dest, len-1); | |
97 | ||
98 | if (size > 0) | |
99 | { | |
100 | dest[size] = '\0'; | |
101 | slen = strlen (dest); | |
102 | ||
103 | lseek (fd, slen - size + 1, SEEK_CUR); | |
104 | return slen < len ? dest : 0; | |
105 | } | |
106 | ||
107 | return 0; | |
108 | } | |
109 | ||
110 | static void | |
111 | FcCacheSkipString (int fd) | |
112 | { | |
113 | char buf[256]; | |
114 | int size; | |
115 | int slen; | |
116 | ||
117 | while ( (size = read (fd, buf, sizeof (buf)-1)) > 0) | |
118 | { | |
119 | buf [size] = '\0'; | |
120 | slen = strlen (buf); | |
121 | if (slen < size) | |
122 | { | |
123 | lseek (fd, slen - size + 1, SEEK_CUR); | |
124 | return; | |
125 | } | |
126 | } | |
127 | } | |
128 | ||
129 | static FcBool | |
130 | FcCacheWriteString (int fd, const char *chars) | |
131 | { | |
132 | if (write (fd, chars, strlen(chars)+1) != strlen(chars)+1) | |
133 | return FcFalse; | |
134 | return FcTrue; | |
135 | } | |
136 | ||
137 | static void | |
138 | FcGlobalCacheDirDestroy (FcGlobalCacheDir *d) | |
139 | { | |
140 | FcStrSetDestroy (d->subdirs); | |
141 | FcMemFree (FC_MEM_STRING, strlen (d->name)+1); | |
142 | free (d->name); | |
143 | FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCacheDir)); | |
144 | free (d); | |
145 | } | |
146 | ||
147 | FcGlobalCache * | |
148 | FcGlobalCacheCreate (void) | |
149 | { | |
150 | FcGlobalCache *cache; | |
151 | ||
152 | cache = malloc (sizeof (FcGlobalCache)); | |
153 | if (!cache) | |
154 | return 0; | |
155 | FcMemAlloc (FC_MEM_CACHE, sizeof (FcGlobalCache)); | |
156 | cache->dirs = 0; | |
157 | cache->updated = FcFalse; | |
158 | cache->fd = -1; | |
159 | return cache; | |
160 | } | |
161 | ||
162 | void | |
163 | FcGlobalCacheDestroy (FcGlobalCache *cache) | |
164 | { | |
165 | FcGlobalCacheDir *d, *next; | |
166 | ||
167 | for (d = cache->dirs; d; d = next) | |
168 | { | |
169 | next = d->next; | |
170 | FcGlobalCacheDirDestroy (d); | |
171 | } | |
172 | FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCache)); | |
173 | if (cache->fd != -1) | |
174 | close (cache->fd); | |
175 | free (cache); | |
176 | } | |
177 | ||
178 | void | |
179 | FcGlobalCacheLoad (FcGlobalCache *cache, | |
180 | FcStrSet *staleDirs, | |
181 | const FcChar8 *cache_file, | |
182 | FcConfig *config) | |
183 | { | |
184 | char name_buf[FC_MAX_FILE_LEN]; | |
185 | FcGlobalCacheDir *d, *next; | |
186 | FcFileTime config_time = FcConfigModifiedTime (config); | |
187 | char * current_arch_machine_name; | |
188 | char candidate_arch_machine_name[MACHINE_SIGNATURE_SIZE + 9]; | |
189 | off_t current_arch_start; | |
190 | ||
191 | struct stat cache_stat, dir_stat; | |
192 | char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1]; | |
193 | ||
194 | if (stat ((char *) cache_file, &cache_stat) < 0) | |
195 | return; | |
196 | ||
197 | cache->fd = open ((char *) cache_file, O_RDONLY | O_BINARY); | |
198 | if (cache->fd == -1) | |
199 | return; | |
200 | ||
201 | cache->updated = FcFalse; | |
202 | ||
203 | if (!FcCacheReadString (cache->fd, name_buf, sizeof (name_buf))) | |
204 | goto bail_and_destroy; | |
205 | if (strcmp (name_buf, FC_GLOBAL_MAGIC_COOKIE) != 0) | |
206 | goto bail_and_destroy; | |
207 | ||
208 | current_arch_machine_name = FcCacheMachineSignature (); | |
209 | current_arch_start = FcCacheSkipToArch(cache->fd, | |
210 | current_arch_machine_name); | |
211 | if (current_arch_start < 0) | |
212 | goto bail1; | |
213 | ||
214 | lseek (cache->fd, current_arch_start, SEEK_SET); | |
215 | if (!FcCacheReadString (cache->fd, candidate_arch_machine_name, | |
216 | sizeof (candidate_arch_machine_name))) | |
217 | goto bail_and_destroy; | |
218 | if (strlen(candidate_arch_machine_name) == 0) | |
219 | goto bail_and_destroy; | |
220 | ||
221 | while (1) | |
222 | { | |
223 | off_t targ; | |
224 | ||
225 | if (!FcCacheReadString (cache->fd, name_buf, sizeof (name_buf)) || | |
226 | !strlen(name_buf)) | |
227 | break; | |
228 | ||
229 | /* Directory must be older than the global cache file; also | |
230 | cache must be newer than the config file. */ | |
231 | if (stat ((char *) name_buf, &dir_stat) < 0 || | |
232 | dir_stat.st_mtime > cache_stat.st_mtime || | |
233 | (config_time.set && cache_stat.st_mtime < config_time.time)) | |
234 | { | |
235 | FcCache md; | |
236 | off_t off; | |
237 | ||
238 | FcStrSetAdd (staleDirs, (FcChar8 *)name_buf); | |
239 | ||
240 | /* skip subdirs */ | |
241 | while (FcCacheReadString (cache->fd, subdirName, | |
242 | sizeof (subdirName)) && | |
243 | strlen (subdirName)) | |
244 | ; | |
245 | ||
246 | if (read (cache->fd, &md, sizeof (FcCache)) != sizeof(FcCache)) | |
247 | { | |
248 | perror ("read metadata"); | |
249 | goto bail1; | |
250 | } | |
251 | off = FcCacheNextOffset (lseek(cache->fd, 0, SEEK_CUR)) + md.count; | |
252 | if (lseek (cache->fd, off, SEEK_SET) != off) | |
253 | { | |
254 | perror ("lseek"); | |
255 | goto bail1; | |
256 | } | |
257 | continue; | |
258 | } | |
259 | ||
260 | d = malloc (sizeof (FcGlobalCacheDir)); | |
261 | if (!d) | |
262 | goto bail1; | |
263 | ||
264 | d->next = cache->dirs; | |
265 | cache->dirs = d; | |
266 | ||
267 | d->name = (char *)FcStrCopy ((FcChar8 *)name_buf); | |
268 | d->ent = 0; | |
269 | d->state = FcGCDirFileRead; | |
270 | ||
271 | d->subdirs = FcStrSetCreate(); | |
272 | do | |
273 | { | |
274 | if (!FcCacheReadString (cache->fd, subdirName, | |
275 | sizeof (subdirName)) || | |
276 | !strlen (subdirName)) | |
277 | break; | |
278 | FcStrSetAdd (d->subdirs, (FcChar8 *)subdirName); | |
279 | } while (1); | |
280 | ||
281 | d->offset = lseek (cache->fd, 0, SEEK_CUR); | |
282 | if (read (cache->fd, &d->metadata, sizeof (FcCache)) != sizeof (FcCache)) | |
283 | goto bail1; | |
284 | targ = FcCacheNextOffset (lseek(cache->fd, 0, SEEK_CUR)) + d->metadata.count; | |
285 | if (lseek (cache->fd, targ, SEEK_SET) != targ) | |
286 | goto bail1; | |
287 | } | |
288 | return; | |
289 | ||
290 | bail1: | |
291 | for (d = cache->dirs; d; d = next) | |
292 | { | |
293 | next = d->next; | |
294 | free (d); | |
295 | } | |
296 | cache->dirs = 0; | |
297 | ||
298 | close (cache->fd); | |
299 | cache->fd = -1; | |
300 | return; | |
301 | ||
302 | bail_and_destroy: | |
303 | close (cache->fd); | |
304 | cache->fd = -1; | |
305 | ||
306 | if (stat ((char *) cache_file, &cache_stat) == 0) | |
307 | unlink ((char *)cache_file); | |
308 | ||
309 | return; | |
310 | ||
311 | } | |
312 | ||
313 | FcBool | |
314 | FcGlobalCacheReadDir (FcFontSet *set, FcStrSet *dirs, FcGlobalCache * cache, const char *dir, FcConfig *config) | |
315 | { | |
316 | FcGlobalCacheDir *d; | |
317 | int i; | |
318 | ||
319 | if (cache->fd == -1) | |
320 | return FcFalse; | |
321 | ||
322 | if (config) | |
323 | if (!(dir = (char *)FcConfigNormalizeFontDir (config, (FcChar8 *)dir))) | |
324 | return FcFalse; /* non-existing directory */ | |
325 | ||
326 | for (d = cache->dirs; d; d = d->next) | |
327 | { | |
328 | if (strcmp (d->name, dir) == 0) | |
329 | { | |
330 | if (d->state == FcGCDirDisabled) | |
331 | return FcFalse; | |
332 | ||
333 | if (d->state == FcGCDirFileRead) | |
334 | { | |
335 | lseek (cache->fd, d->offset, SEEK_SET); | |
336 | if (!FcDirCacheConsume (cache->fd, d->name, set, config)) | |
337 | return FcFalse; | |
338 | ||
339 | for (i = 0; i < d->subdirs->num; i++) | |
340 | FcStrSetAdd (dirs, (FcChar8 *)d->subdirs->strs[i]); | |
341 | ||
342 | d->state = FcGCDirConsumed; | |
343 | } | |
344 | return FcTrue; | |
345 | } | |
346 | } | |
347 | ||
348 | return FcFalse; | |
349 | } | |
350 | ||
351 | static FcGlobalCacheDir * | |
352 | FcGlobalCacheDirFind (FcGlobalCache *cache, const char *name) | |
353 | { | |
354 | FcGlobalCacheDir * d; | |
355 | ||
356 | if (!cache || !name) | |
357 | return NULL; | |
358 | ||
359 | for (d = cache->dirs; d; d = d->next) | |
360 | if (strcmp((const char *)d->name, (const char *)name) == 0) | |
361 | return d; | |
362 | ||
363 | return NULL; | |
364 | } | |
365 | ||
366 | FcBool | |
367 | FcGlobalCacheUpdate (FcGlobalCache *cache, | |
368 | FcStrSet *dirs, | |
369 | const char *orig_name, | |
370 | FcFontSet *set, | |
371 | FcConfig *config) | |
372 | { | |
373 | FcGlobalCacheDir *d; | |
374 | int i; | |
375 | const char *name; | |
376 | ||
377 | name = (char *)FcConfigNormalizeFontDir (config, (FcChar8 *)orig_name); | |
378 | if (!name) | |
379 | { | |
380 | fprintf(stderr, "Invalid directory name %s\n", orig_name); | |
381 | return FcFalse; | |
382 | } | |
383 | ||
384 | d = FcGlobalCacheDirFind (cache, name); | |
385 | ||
386 | if (!d) | |
387 | { | |
388 | d = malloc (sizeof (FcGlobalCacheDir)); | |
389 | if (!d) | |
390 | return FcFalse; | |
391 | d->next = cache->dirs; | |
392 | cache->dirs = d; | |
393 | } else { | |
394 | /* free old resources */ | |
395 | FcStrFree ((FcChar8 *)d->name); | |
396 | free (d->ent); | |
397 | FcStrSetDestroy (d->subdirs); | |
398 | } | |
399 | ||
400 | cache->updated = FcTrue; | |
401 | ||
402 | d->name = (char *)FcStrCopy ((FcChar8 *)name); | |
403 | d->ent = FcDirCacheProduce (set, &d->metadata); | |
404 | d->offset = 0; | |
405 | d->subdirs = FcStrSetCreate(); | |
406 | d->state = FcGCDirUpdated; | |
407 | for (i = 0; i < dirs->num; i++) | |
408 | FcStrSetAdd (d->subdirs, dirs->strs[i]); | |
409 | return FcTrue; | |
410 | } | |
411 | ||
412 | FcBool | |
413 | FcGlobalCacheSave (FcGlobalCache *cache, | |
414 | const FcChar8 *cache_file, | |
415 | FcConfig *config) | |
416 | { | |
417 | int fd, fd_orig; | |
418 | FcGlobalCacheDir *dir; | |
419 | FcAtomic *atomic; | |
420 | off_t current_arch_start = 0, truncate_to; | |
421 | char * current_arch_machine_name, * header; | |
422 | ||
423 | if (!cache->updated) | |
424 | return FcTrue; | |
425 | ||
426 | #if defined (HAVE_GETUID) && defined (HAVE_GETEUID) | |
427 | /* Set-UID programs can't safely update the cache */ | |
428 | if (getuid () != geteuid ()) | |
429 | return FcFalse; | |
430 | #endif | |
431 | ||
432 | atomic = FcAtomicCreate (cache_file); | |
433 | if (!atomic) | |
434 | return FcFalse; | |
435 | ||
436 | if (!FcAtomicLock (atomic)) | |
437 | goto bail1; | |
438 | fd = open ((char *) FcAtomicNewFile(atomic), O_RDWR | O_CREAT | O_BINARY, | |
439 | S_IRUSR | S_IWUSR); | |
440 | if (fd == -1) | |
441 | goto bail2; | |
442 | FcCacheWriteString (fd, FC_GLOBAL_MAGIC_COOKIE); | |
443 | ||
444 | fd_orig = open ((char *) FcAtomicOrigFile(atomic), O_RDONLY | O_BINARY); | |
445 | ||
446 | current_arch_machine_name = FcCacheMachineSignature (); | |
447 | if (fd_orig == -1) | |
448 | current_arch_start = 0; | |
449 | else | |
450 | current_arch_start = FcCacheSkipToArch (fd_orig, | |
451 | current_arch_machine_name); | |
452 | ||
453 | if (current_arch_start < 0) | |
454 | { | |
455 | off_t i = lseek(fd_orig, 0, SEEK_END); | |
456 | if (i < strlen (FC_GLOBAL_MAGIC_COOKIE)+1) | |
457 | i = strlen (FC_GLOBAL_MAGIC_COOKIE)+1; | |
458 | current_arch_start = FcCacheNextOffset (i); | |
459 | } | |
460 | ||
461 | if (!FcCacheCopyOld(fd, fd_orig, current_arch_start)) | |
462 | goto bail3; | |
463 | ||
464 | current_arch_start = lseek(fd, 0, SEEK_CUR); | |
465 | #if defined (HAVE_FTRUNCATE) | |
466 | if (ftruncate (fd, current_arch_start) == -1) | |
467 | goto bail3; | |
468 | #else | |
469 | #if defined (HAVE_CHSIZE) | |
470 | if (chsize (fd, current_arch_start) == -1) | |
471 | goto bail3; | |
472 | #else | |
473 | goto bail3; | |
474 | #endif | |
475 | #endif | |
476 | ||
477 | header = malloc (10 + strlen (current_arch_machine_name)); | |
478 | if (!header) | |
479 | goto bail3; | |
480 | ||
481 | truncate_to = current_arch_start + strlen(current_arch_machine_name) + 11; | |
482 | for (dir = cache->dirs; dir; dir = dir->next) | |
483 | { | |
484 | int i; | |
485 | ||
486 | if (dir->state == FcGCDirDisabled) | |
487 | continue; | |
488 | truncate_to += strlen(dir->name) + 1; | |
489 | truncate_to += sizeof (FcCache); | |
490 | truncate_to = FcCacheNextOffset (truncate_to); | |
491 | truncate_to += dir->metadata.count; | |
492 | ||
493 | for (i = 0; i < dir->subdirs->size; i++) | |
494 | truncate_to += strlen((char *)dir->subdirs->strs[i]) + 1; | |
495 | truncate_to ++; | |
496 | } | |
497 | truncate_to -= current_arch_start; | |
498 | ||
499 | sprintf (header, "%8x ", (int)truncate_to); | |
500 | strcat (header, current_arch_machine_name); | |
501 | if (!FcCacheWriteString (fd, header)) | |
502 | goto bail4; | |
503 | ||
504 | free (header); | |
505 | ||
506 | for (dir = cache->dirs; dir; dir = dir->next) | |
507 | { | |
508 | int i; | |
509 | const char * d; | |
510 | off_t off; | |
511 | ||
512 | if (!dir->name || dir->state == FcGCDirDisabled) | |
513 | continue; | |
514 | d = (const char *)FcConfigNormalizeFontDir (config, (const FcChar8 *)dir->name); | |
515 | if (!d) | |
516 | continue; | |
517 | ||
518 | if (dir->metadata.count && !dir->ent) | |
519 | { | |
520 | if (dir->state == FcGCDirUpdated || fd_orig < 0) | |
521 | { | |
522 | fprintf(stderr, "Invalid metadata entry for %s, skipping...\n", d); | |
523 | continue; | |
524 | } | |
525 | /* copy the old content */ | |
526 | dir->ent = malloc (dir->metadata.count); | |
527 | if (!dir->ent) | |
528 | { | |
529 | perror("malloc error"); | |
530 | continue; | |
531 | } | |
532 | off = FcCacheNextOffset (dir->offset + sizeof(FcCache)); | |
533 | if (lseek (fd_orig, off, SEEK_SET) != off) | |
534 | { | |
535 | perror("lseek"); | |
536 | free(dir->ent); | |
537 | continue; | |
538 | } | |
539 | if (read (fd_orig, dir->ent, dir->metadata.count) | |
540 | != dir->metadata.count) | |
541 | { | |
542 | perror("read"); | |
543 | free(dir->ent); | |
544 | continue; | |
545 | } | |
546 | } | |
547 | ||
548 | FcCacheWriteString (fd, d); | |
549 | ||
550 | for (i = 0; i < dir->subdirs->size; i++) | |
551 | FcCacheWriteString (fd, (char *)dir->subdirs->strs[i]); | |
552 | FcCacheWriteString (fd, ""); | |
553 | ||
554 | if (write (fd, &dir->metadata, sizeof(FcCache)) != sizeof(FcCache)) | |
555 | { | |
556 | perror ("write metadata"); | |
557 | free (dir->ent); | |
558 | continue; | |
559 | } | |
560 | off = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR)); | |
561 | if (lseek (fd, off, SEEK_SET) != off) | |
562 | { | |
563 | perror ("lseek"); | |
564 | free (dir->ent); | |
565 | continue; | |
566 | } | |
567 | if (dir->metadata.count) | |
568 | { | |
569 | if (write (fd, dir->ent, dir->metadata.count) != dir->metadata.count) | |
570 | { | |
571 | perror ("write dirent"); | |
572 | free (dir->ent); | |
573 | continue; | |
574 | } | |
575 | } | |
576 | free (dir->ent); | |
577 | } | |
578 | FcCacheWriteString (fd, ""); | |
579 | ||
580 | if (close (fd) == -1) | |
581 | goto bail25; | |
582 | ||
583 | close (fd_orig); | |
584 | fd_orig = -1; | |
585 | ||
586 | if (!FcAtomicReplaceOrig (atomic)) | |
587 | goto bail25; | |
588 | ||
589 | FcAtomicUnlock (atomic); | |
590 | FcAtomicDestroy (atomic); | |
591 | ||
592 | cache->updated = FcFalse; | |
593 | return FcTrue; | |
594 | ||
595 | bail4: | |
596 | free (header); | |
597 | bail3: | |
598 | if (fd_orig != -1) | |
599 | close (fd_orig); | |
600 | ||
601 | close (fd); | |
602 | bail25: | |
603 | FcAtomicDeleteNew (atomic); | |
604 | bail2: | |
605 | FcAtomicUnlock (atomic); | |
606 | bail1: | |
607 | FcAtomicDestroy (atomic); | |
608 | return FcFalse; | |
609 | } | |
610 | ||
611 | /* | |
612 | * Find the next presumably-mmapable offset after the supplied file | |
613 | * position. | |
614 | */ | |
615 | static int | |
616 | FcCacheNextOffset(off_t w) | |
617 | { | |
618 | static long pagesize = -1; | |
619 | ||
620 | if (w == -1) | |
621 | return w; | |
622 | ||
623 | if (pagesize == -1) | |
624 | #if defined (HAVE_SYSCONF) | |
625 | pagesize = sysconf(_SC_PAGESIZE); | |
626 | #else | |
627 | pagesize = FC_HARDCODED_PAGESIZE; | |
628 | #endif | |
629 | if (w % pagesize == 0) | |
630 | return w; | |
631 | else | |
632 | return ((w / pagesize)+1)*pagesize; | |
633 | } | |
634 | ||
635 | /* return the address of the segment for the provided arch, | |
636 | * or -1 if arch not found */ | |
637 | static off_t | |
638 | FcCacheSkipToArch (int fd, const char * arch) | |
639 | { | |
640 | char candidate_arch_machine_name_count[MACHINE_SIGNATURE_SIZE + 9]; | |
641 | char * candidate_arch; | |
642 | off_t current_arch_start = 0; | |
643 | ||
644 | lseek (fd, 0, SEEK_SET); | |
645 | FcCacheSkipString (fd); | |
646 | current_arch_start = lseek (fd, 0, SEEK_CUR); | |
647 | ||
648 | /* skip arches that are not the current arch */ | |
649 | while (1) | |
650 | { | |
651 | long bs; | |
652 | ||
653 | if (lseek (fd, current_arch_start, SEEK_SET) != current_arch_start) | |
654 | return -1; | |
655 | ||
656 | if (FcCacheReadString (fd, candidate_arch_machine_name_count, | |
657 | sizeof (candidate_arch_machine_name_count)) == 0) | |
658 | return -1; | |
659 | if (!strlen(candidate_arch_machine_name_count)) | |
660 | return -1; | |
661 | bs = strtol(candidate_arch_machine_name_count, &candidate_arch, 16); | |
662 | ||
663 | /* count = 0 should probably be distinguished from the !bs condition */ | |
664 | if (!bs || bs < strlen (candidate_arch_machine_name_count)) | |
665 | return -1; | |
666 | ||
667 | candidate_arch++; /* skip leading space */ | |
668 | ||
669 | if (strcmp (candidate_arch, arch)==0) | |
670 | return current_arch_start; | |
671 | current_arch_start += bs; | |
672 | current_arch_start = FcCacheNextOffset (current_arch_start); | |
673 | } | |
674 | } | |
675 | ||
676 | /* Cuts out the segment at the file pointer (moves everything else | |
677 | * down to cover it), and leaves the file pointer at the end of the | |
678 | * file. */ | |
679 | static FcBool | |
680 | FcCacheCopyOld (int fd, int fd_orig, off_t start) | |
681 | { | |
682 | char * buf = malloc (8192); | |
683 | char candidate_arch_machine_name[MACHINE_SIGNATURE_SIZE + 9]; | |
684 | long bs; | |
685 | int c, bytes_skipped; | |
686 | off_t loc; | |
687 | ||
688 | if (!buf) | |
689 | return FcFalse; | |
690 | ||
691 | loc = 0; | |
692 | lseek (fd, 0, SEEK_SET); lseek (fd_orig, 0, SEEK_SET); | |
693 | FcCacheSkipString (fd); FcCacheSkipString (fd_orig); | |
694 | do | |
695 | { | |
696 | int b = 8192; | |
697 | if (loc + b > start) | |
698 | b = start - loc; | |
699 | ||
700 | if ((c = read (fd_orig, buf, b)) <= 0) | |
701 | break; | |
702 | if (write (fd, buf, c) < 0) | |
703 | goto bail; | |
704 | ||
705 | loc += c; | |
706 | } | |
707 | while (c > 0); | |
708 | ||
709 | lseek (fd, start, SEEK_SET); | |
710 | if (FcCacheReadString (fd, candidate_arch_machine_name, | |
711 | sizeof (candidate_arch_machine_name)) == 0) | |
712 | goto done; | |
713 | if (!strlen(candidate_arch_machine_name)) | |
714 | goto done; | |
715 | ||
716 | bs = strtol(candidate_arch_machine_name, 0, 16); | |
717 | if (bs == 0) | |
718 | goto done; | |
719 | ||
720 | bytes_skipped = 0; | |
721 | do | |
722 | { | |
723 | lseek (fd, start+bs+bytes_skipped, SEEK_SET); | |
724 | if ((c = read (fd, buf, 8192)) <= 0) | |
725 | break; | |
726 | lseek (fd, start+bytes_skipped, SEEK_SET); | |
727 | if (write (fd, buf, c) < 0) | |
728 | goto bail; | |
729 | bytes_skipped += c; | |
730 | } | |
731 | while (c > 0); | |
732 | lseek (fd, start+bytes_skipped, SEEK_SET); | |
733 | ||
734 | done: | |
735 | free (buf); | |
736 | return FcTrue; | |
737 | ||
738 | bail: | |
739 | free (buf); | |
740 | return FcFalse; | |
741 | } | |
742 | ||
743 | /* Does not check that the cache has the appropriate arch section. */ | |
744 | FcBool | |
745 | FcDirCacheValid (const FcChar8 *dir, FcConfig *config) | |
746 | { | |
747 | int fd; | |
748 | ||
749 | fd = FcDirCacheOpen (config, dir, NULL); | |
750 | ||
751 | if (fd < 0) | |
752 | return FcFalse; | |
753 | close (fd); | |
754 | ||
755 | return FcTrue; | |
756 | } | |
757 | ||
758 | /* Assumes that the cache file in 'dir' exists. | |
759 | * Checks that the cache has the appropriate arch section. */ | |
760 | FcBool | |
761 | FcDirCacheHasCurrentArch (const FcChar8 *dir, FcConfig *config) | |
762 | { | |
763 | int fd; | |
764 | off_t current_arch_start; | |
765 | char *current_arch_machine_name; | |
766 | FcCache metadata; | |
767 | char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1]; | |
768 | ||
769 | fd = FcDirCacheOpen (config, dir, NULL); | |
770 | if (fd < 0) | |
771 | goto bail; | |
772 | ||
773 | current_arch_machine_name = FcCacheMachineSignature(); | |
774 | current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name); | |
775 | ||
776 | if (current_arch_start >= 0) | |
777 | { | |
778 | if (lseek (fd, current_arch_start, SEEK_SET) != current_arch_start) | |
779 | goto bail1; | |
780 | ||
781 | FcCacheSkipString (fd); | |
782 | ||
783 | while (FcCacheReadString (fd, subdirName, sizeof (subdirName)) && strlen (subdirName) > 0) | |
784 | ; | |
785 | ||
786 | if (read(fd, &metadata, sizeof(FcCache)) != sizeof(FcCache)) | |
787 | goto bail1; | |
788 | ||
789 | if (metadata.magic != FC_CACHE_MAGIC) | |
790 | goto bail1; | |
791 | } | |
792 | ||
793 | close (fd); | |
794 | ||
795 | if (current_arch_start < 0) | |
796 | return FcFalse; | |
797 | ||
798 | return FcTrue; | |
799 | ||
800 | bail1: | |
801 | close (fd); | |
802 | bail: | |
803 | return FcFalse; | |
804 | } | |
805 | ||
806 | #define CACHEBASE_LEN (1 + 32 + sizeof (FC_CACHE_SUFFIX)) | |
807 | ||
808 | static const char bin2hex[] = { '0', '1', '2', '3', | |
809 | '4', '5', '6', '7', | |
810 | '8', '9', 'a', 'b', | |
811 | 'c', 'd', 'e', 'f' }; | |
812 | ||
813 | static FcChar8 * | |
814 | FcDirCacheBasename (const FcChar8 * dir, FcChar8 cache_base[CACHEBASE_LEN]) | |
815 | { | |
816 | unsigned char hash[16]; | |
817 | FcChar8 *hex_hash; | |
818 | int cnt; | |
819 | struct MD5Context ctx; | |
820 | ||
821 | MD5Init (&ctx); | |
822 | MD5Update (&ctx, (unsigned char *)dir, strlen ((char *) dir)); | |
823 | ||
824 | MD5Final (hash, &ctx); | |
825 | ||
826 | cache_base[0] = '/'; | |
827 | hex_hash = cache_base + 1; | |
828 | for (cnt = 0; cnt < 16; ++cnt) | |
829 | { | |
830 | hex_hash[2*cnt ] = bin2hex[hash[cnt] >> 4]; | |
831 | hex_hash[2*cnt+1] = bin2hex[hash[cnt] & 0xf]; | |
832 | } | |
833 | hex_hash[2*cnt] = 0; | |
834 | strcat ((char *) cache_base, FC_CACHE_SUFFIX); | |
835 | ||
836 | return cache_base; | |
837 | } | |
838 | ||
839 | FcBool | |
840 | FcDirCacheUnlink (const FcChar8 *dir, FcConfig *config) | |
841 | { | |
842 | int fd = -1; | |
843 | FcChar8 *cache_hashed = NULL; | |
844 | FcChar8 cache_base[CACHEBASE_LEN]; | |
845 | FcStrList *list; | |
846 | FcChar8 *cache_dir; | |
847 | char dir_buf[FC_MAX_FILE_LEN]; | |
848 | ||
849 | dir = FcConfigNormalizeFontDir (config, dir); | |
850 | ||
851 | FcDirCacheBasename (dir, cache_base); | |
852 | ||
853 | list = FcStrListCreate (config->cacheDirs); | |
854 | if (!list) | |
855 | return FcFalse; | |
856 | ||
857 | while ((cache_dir = FcStrListNext (list))) | |
858 | { | |
859 | cache_hashed = FcStrPlus (cache_dir, cache_base); | |
860 | if (!cache_hashed) | |
861 | break; | |
862 | fd = open((char *) cache_hashed, O_RDONLY | O_BINARY); | |
863 | FcStrFree (cache_hashed); | |
864 | if (fd >= 0) | |
865 | { | |
866 | if (FcCacheReadString (fd, dir_buf, sizeof (dir_buf)) && | |
867 | strcmp (dir_buf, (char *) dir) == 0) | |
868 | { | |
869 | close (fd); | |
870 | if (unlink ((char *) cache_hashed) < 0) | |
871 | break; | |
872 | } else | |
873 | close (fd); | |
874 | } | |
875 | } | |
876 | FcStrListDone (list); | |
877 | /* return FcFalse if something went wrong */ | |
878 | if (cache_dir) | |
879 | return FcFalse; | |
880 | return FcTrue; | |
881 | } | |
882 | ||
883 | static int | |
884 | FcCacheReadDirs (FcConfig * config, FcGlobalCache * cache, | |
885 | FcStrList *list, FcFontSet * set, FcStrSet *processed_dirs) | |
886 | { | |
887 | int ret = 0; | |
888 | FcChar8 *dir; | |
889 | FcStrSet *subdirs; | |
890 | FcStrList *sublist; | |
891 | struct stat statb; | |
892 | FcGlobalCacheDir *d; | |
893 | ||
894 | /* | |
895 | * Read in the results from 'list'. | |
896 | */ | |
897 | while ((dir = FcStrListNext (list))) | |
898 | { | |
899 | if (!FcConfigAcceptFilename (config, dir)) | |
900 | continue; | |
901 | ||
902 | /* Skip this directory if already updated | |
903 | * to avoid the looped directories via symlinks | |
904 | * Clearly a dir not in fonts.conf shouldn't be globally cached. | |
905 | */ | |
906 | dir = (FcChar8 *)FcConfigNormalizeFontDir (config, dir); | |
907 | if (!dir) | |
908 | continue; | |
909 | ||
910 | if (FcStrSetMember (processed_dirs, dir)) | |
911 | continue; | |
912 | if (!FcStrSetAdd (processed_dirs, dir)) | |
913 | continue; | |
914 | ||
915 | subdirs = FcStrSetCreate (); | |
916 | if (!subdirs) | |
917 | { | |
918 | fprintf (stderr, "Can't create directory set\n"); | |
919 | ret++; | |
920 | continue; | |
921 | } | |
922 | ||
923 | if (access ((char *) dir, X_OK) < 0) | |
924 | { | |
925 | switch (errno) { | |
926 | case ENOENT: | |
927 | case ENOTDIR: | |
928 | case EACCES: | |
929 | break; | |
930 | default: | |
931 | fprintf (stderr, "\"%s\": ", dir); | |
932 | perror (""); | |
933 | ret++; | |
934 | } | |
935 | FcStrSetDestroy (subdirs); | |
936 | continue; | |
937 | } | |
938 | if (stat ((char *) dir, &statb) == -1) | |
939 | { | |
940 | fprintf (stderr, "\"%s\": ", dir); | |
941 | perror (""); | |
942 | FcStrSetDestroy (subdirs); | |
943 | ret++; | |
944 | continue; | |
945 | } | |
946 | if (!S_ISDIR (statb.st_mode)) | |
947 | { | |
948 | fprintf (stderr, "\"%s\": not a directory, skipping\n", dir); | |
949 | FcStrSetDestroy (subdirs); | |
950 | continue; | |
951 | } | |
952 | if (FcDirCacheRead (set, subdirs, dir, config)) | |
953 | { | |
954 | /* if an old entry is found in the global cache, disable it */ | |
955 | if ((d = FcGlobalCacheDirFind (cache, (const char *)dir)) != NULL) | |
956 | { | |
957 | d->state = FcGCDirDisabled; | |
958 | /* save the updated config later without this entry */ | |
959 | cache->updated = FcTrue; | |
960 | } | |
961 | } | |
962 | else | |
963 | { | |
964 | if (FcDebug () & FC_DBG_FONTSET) | |
965 | printf ("cache scan dir %s\n", dir); | |
966 | ||
967 | FcDirScanConfig (set, subdirs, cache, | |
968 | config->blanks, dir, FcFalse, config); | |
969 | } | |
970 | sublist = FcStrListCreate (subdirs); | |
971 | FcStrSetDestroy (subdirs); | |
972 | if (!sublist) | |
973 | { | |
974 | fprintf (stderr, "Can't create subdir list in \"%s\"\n", dir); | |
975 | ret++; | |
976 | continue; | |
977 | } | |
978 | ret += FcCacheReadDirs (config, cache, sublist, set, processed_dirs); | |
979 | } | |
980 | FcStrListDone (list); | |
981 | return ret; | |
982 | } | |
983 | ||
984 | FcFontSet * | |
985 | FcCacheRead (FcConfig *config, FcGlobalCache * cache) | |
986 | { | |
987 | FcFontSet *s = FcFontSetCreate(); | |
988 | FcStrSet *processed_dirs; | |
989 | ||
990 | if (!s) | |
991 | return 0; | |
992 | ||
993 | processed_dirs = FcStrSetCreate(); | |
994 | if (!processed_dirs) | |
995 | goto bail; | |
996 | ||
997 | if (FcCacheReadDirs (config, cache, FcConfigGetConfigDirs (config), s, processed_dirs)) | |
998 | goto bail1; | |
999 | ||
1000 | FcStrSetDestroy (processed_dirs); | |
1001 | return s; | |
1002 | ||
1003 | bail1: | |
1004 | FcStrSetDestroy (processed_dirs); | |
1005 | bail: | |
1006 | FcFontSetDestroy (s); | |
1007 | return 0; | |
1008 | } | |
1009 | ||
1010 | /* Opens the cache file for 'dir' for reading. | |
1011 | * This searches the list of cache dirs for the relevant cache file, | |
1012 | * returning the first one found. | |
1013 | */ | |
1014 | static int | |
1015 | FcDirCacheOpen (FcConfig *config, const FcChar8 *dir, FcChar8 **cache_path) | |
1016 | { | |
1017 | int fd = -1; | |
1018 | FcChar8 *cache_hashed = NULL; | |
1019 | FcChar8 cache_base[CACHEBASE_LEN]; | |
1020 | FcStrList *list; | |
1021 | FcChar8 *cache_dir; | |
1022 | char dir_buf[FC_MAX_FILE_LEN]; | |
1023 | struct stat file_stat, dir_stat; | |
1024 | ||
1025 | if (stat ((char *) dir, &dir_stat) < 0) | |
1026 | return -1; | |
1027 | ||
1028 | FcDirCacheBasename (dir, cache_base); | |
1029 | ||
1030 | list = FcStrListCreate (config->cacheDirs); | |
1031 | if (!list) | |
1032 | return -1; | |
1033 | ||
1034 | while ((cache_dir = FcStrListNext (list))) | |
1035 | { | |
1036 | cache_hashed = FcStrPlus (cache_dir, cache_base); | |
1037 | if (!cache_hashed) | |
1038 | break; | |
1039 | fd = open((char *) cache_hashed, O_RDONLY | O_BINARY); | |
1040 | if (fd >= 0) { | |
1041 | if (fstat (fd, &file_stat) >= 0 && | |
1042 | dir_stat.st_mtime <= file_stat.st_mtime) | |
1043 | { | |
1044 | break; | |
1045 | } | |
1046 | close (fd); | |
1047 | fd = -1; | |
1048 | } | |
1049 | FcStrFree (cache_hashed); | |
1050 | cache_hashed = NULL; | |
1051 | } | |
1052 | FcStrListDone (list); | |
1053 | ||
1054 | if (fd < 0) | |
1055 | return -1; | |
1056 | ||
1057 | if (!FcCacheReadString (fd, dir_buf, sizeof (dir_buf)) || | |
1058 | strcmp (dir_buf, (char *) dir) != 0) | |
1059 | { | |
1060 | close (fd); | |
1061 | FcStrFree (cache_hashed); | |
1062 | return -1; | |
1063 | } | |
1064 | ||
1065 | if (cache_path) | |
1066 | *cache_path = cache_hashed; | |
1067 | else | |
1068 | FcStrFree (cache_hashed); | |
1069 | ||
1070 | return fd; | |
1071 | } | |
1072 | ||
1073 | /* read serialized state from the cache file */ | |
1074 | FcBool | |
1075 | FcDirCacheRead (FcFontSet * set, FcStrSet * dirs, const FcChar8 *dir, FcConfig *config) | |
1076 | { | |
1077 | int fd; | |
1078 | char *current_arch_machine_name; | |
1079 | char candidate_arch_machine_name[9+MACHINE_SIGNATURE_SIZE]; | |
1080 | off_t current_arch_start = 0; | |
1081 | char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1]; | |
1082 | ||
1083 | fd = FcDirCacheOpen (config, dir, NULL); | |
1084 | if (fd < 0) | |
1085 | goto bail; | |
1086 | ||
1087 | current_arch_machine_name = FcCacheMachineSignature(); | |
1088 | current_arch_start = FcCacheSkipToArch(fd, | |
1089 | current_arch_machine_name); | |
1090 | if (current_arch_start < 0) | |
1091 | goto bail1; | |
1092 | ||
1093 | lseek (fd, current_arch_start, SEEK_SET); | |
1094 | if (FcCacheReadString (fd, candidate_arch_machine_name, | |
1095 | sizeof (candidate_arch_machine_name)) == 0) | |
1096 | goto bail1; | |
1097 | ||
1098 | while (FcCacheReadString (fd, subdirName, sizeof (subdirName)) && strlen (subdirName) > 0) | |
1099 | FcStrSetAdd (dirs, (FcChar8 *)subdirName); | |
1100 | ||
1101 | if (!FcDirCacheConsume (fd, (const char *)dir, set, config)) | |
1102 | goto bail1; | |
1103 | ||
1104 | close(fd); | |
1105 | return FcTrue; | |
1106 | ||
1107 | bail1: | |
1108 | close (fd); | |
1109 | bail: | |
1110 | return FcFalse; | |
1111 | } | |
1112 | ||
1113 | static FcBool | |
1114 | FcDirCacheConsume (int fd, const char * dir, FcFontSet *set, FcConfig *config) | |
1115 | { | |
1116 | FcCache metadata; | |
1117 | void * current_dir_block; | |
1118 | off_t pos, endpos; | |
1119 | ||
1120 | if (read(fd, &metadata, sizeof(FcCache)) != sizeof(FcCache)) | |
1121 | return FcFalse; | |
1122 | if (metadata.magic != FC_CACHE_MAGIC) | |
1123 | return FcFalse; | |
1124 | ||
1125 | if (!metadata.count) | |
1126 | { | |
1127 | pos = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR)); | |
1128 | lseek (fd, pos, SEEK_SET); | |
1129 | if (config) | |
1130 | FcConfigAddFontDir (config, (FcChar8 *)dir); | |
1131 | return FcTrue; | |
1132 | } | |
1133 | ||
1134 | pos = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR)); | |
1135 | ||
1136 | /* This is not failsafe (multi-arches can break it), | |
1137 | * but fd has got to have at least as many bytes as | |
1138 | * metadata.count, or something's going to go horribly wrong. */ | |
1139 | if (pos == (off_t)-1) | |
1140 | return FcFalse; | |
1141 | ||
1142 | endpos = lseek (fd, 0, SEEK_END); | |
1143 | if (endpos == (off_t)-1 || endpos - pos < metadata.count) | |
1144 | return FcFalse; | |
1145 | if (lseek (fd, pos, SEEK_SET) == -1) | |
1146 | return FcFalse; | |
1147 | ||
1148 | #if defined(HAVE_MMAP) || defined(__CYGWIN__) | |
1149 | current_dir_block = mmap (0, metadata.count, | |
1150 | PROT_READ, MAP_SHARED, fd, pos); | |
1151 | if (current_dir_block == MAP_FAILED) | |
1152 | return FcFalse; | |
1153 | #elif defined(_WIN32) | |
1154 | { | |
1155 | HANDLE hFileMap; | |
1156 | ||
1157 | hFileMap = CreateFileMapping((HANDLE) _get_osfhandle(fd), NULL, PAGE_READONLY, 0, 0, NULL); | |
1158 | if (hFileMap == NULL) | |
1159 | return FcFalse; | |
1160 | ||
1161 | current_dir_block = MapViewOfFile (hFileMap, FILE_MAP_READ, 0, 0, metadata.count + pos); | |
1162 | if (current_dir_block == NULL) | |
1163 | { | |
1164 | CloseHandle (hFileMap); | |
1165 | return FcFalse; | |
1166 | } | |
1167 | ||
1168 | current_dir_block = (void *)((char *)current_dir_block + pos); | |
1169 | } | |
1170 | #else | |
1171 | current_dir_block = malloc (metadata.count); | |
1172 | if (!current_dir_block) | |
1173 | return FcFalse; | |
1174 | ||
1175 | /* could also use CreateMappedViewOfFile under MinGW... */ | |
1176 | if (read (fd, current_dir_block, metadata.count) != metadata.count) | |
1177 | goto bail; | |
1178 | #endif | |
1179 | lseek (fd, pos+metadata.count, SEEK_SET); | |
1180 | ||
1181 | FcCacheAddBankDir (metadata.bank, dir); | |
1182 | if (config) | |
1183 | FcConfigAddFontDir (config, (FcChar8 *)dir); | |
1184 | ||
1185 | if (!FcFontSetUnserialize (&metadata, set, current_dir_block)) | |
1186 | goto bail; | |
1187 | ||
1188 | return FcTrue; | |
1189 | bail: | |
1190 | #if !(defined(HAVE_MMAP) || defined(__CYGWIN__)) | |
1191 | free (current_dir_block); | |
1192 | #endif | |
1193 | return FcFalse; | |
1194 | } | |
1195 | ||
1196 | static void * | |
1197 | FcDirCacheProduce (FcFontSet *set, FcCache *metadata) | |
1198 | { | |
1199 | void * current_dir_block, * final_dir_block; | |
1200 | static unsigned int rand_state = 0; | |
1201 | int bank, needed_bytes_no_align; | |
1202 | ||
1203 | #if defined (HAVE_RAND_R) | |
1204 | if (!rand_state) | |
1205 | rand_state = time(0L); | |
1206 | bank = rand_r(&rand_state); | |
1207 | ||
1208 | while (FcCacheHaveBank(bank)) | |
1209 | bank = rand_r(&rand_state); | |
1210 | #else | |
1211 | if (!rand_state) | |
1212 | { | |
1213 | rand_state = 1; | |
1214 | srand (time (0L)); | |
1215 | } | |
1216 | bank = rand(); | |
1217 | ||
1218 | while (FcCacheHaveBank(bank)) | |
1219 | bank = rand(); | |
1220 | #endif | |
1221 | ||
1222 | memset (metadata, 0, sizeof(FcCache)); | |
1223 | FcFontSetNewBank(); | |
1224 | needed_bytes_no_align = FcFontSetNeededBytes (set); | |
1225 | metadata->count = needed_bytes_no_align + | |
1226 | FcFontSetNeededBytesAlign (); | |
1227 | metadata->magic = FC_CACHE_MAGIC; | |
1228 | metadata->bank = bank; | |
1229 | ||
1230 | if (!needed_bytes_no_align) /* not a failure, no fonts to write */ | |
1231 | { | |
1232 | /* no, you don't really need to write any bytes at all. */ | |
1233 | metadata->count = 0; | |
1234 | return 0; | |
1235 | } | |
1236 | ||
1237 | current_dir_block = malloc (metadata->count); | |
1238 | if (!current_dir_block) | |
1239 | goto bail; | |
1240 | /* shut up valgrind */ | |
1241 | memset (current_dir_block, 0, metadata->count); | |
1242 | final_dir_block = FcFontSetDistributeBytes (metadata, current_dir_block); | |
1243 | ||
1244 | if ((void *)((char *)current_dir_block+metadata->count) < final_dir_block) | |
1245 | goto bail; | |
1246 | ||
1247 | if (!FcFontSetSerialize (bank, set)) | |
1248 | goto bail; | |
1249 | ||
1250 | return current_dir_block; | |
1251 | ||
1252 | bail: | |
1253 | free (current_dir_block); | |
1254 | return 0; | |
1255 | } | |
1256 | ||
1257 | static FcBool | |
1258 | FcMakeDirectory (const FcChar8 *dir) | |
1259 | { | |
1260 | FcChar8 *parent; | |
1261 | FcBool ret; | |
1262 | ||
1263 | if (strlen ((char *) dir) == 0) | |
1264 | return FcFalse; | |
1265 | ||
1266 | parent = FcStrDirname (dir); | |
1267 | if (!parent) | |
1268 | return FcFalse; | |
1269 | if (access ((char *) parent, W_OK|X_OK) == 0) | |
1270 | ret = mkdir ((char *) dir, 0777) == 0; | |
1271 | else if (access ((char *) parent, F_OK) == -1) | |
1272 | ret = FcMakeDirectory (parent) && (mkdir ((char *) dir, 0777) == 0); | |
1273 | else | |
1274 | ret = FcFalse; | |
1275 | FcStrFree (parent); | |
1276 | return ret; | |
1277 | } | |
1278 | ||
1279 | /* write serialized state to the cache file */ | |
1280 | FcBool | |
1281 | FcDirCacheWrite (FcFontSet *set, FcStrSet *dirs, const FcChar8 *dir, FcConfig *config) | |
1282 | { | |
1283 | FcChar8 cache_base[CACHEBASE_LEN]; | |
1284 | FcChar8 *cache_hashed; | |
1285 | int fd, fd_orig, i, dirs_count; | |
1286 | FcAtomic *atomic; | |
1287 | FcCache metadata; | |
1288 | off_t current_arch_start = 0, truncate_to; | |
1289 | FcStrList *list; | |
1290 | char *current_arch_machine_name, * header; | |
1291 | void *current_dir_block = 0; | |
1292 | FcChar8 *cache_dir = NULL; | |
1293 | FcChar8 *test_dir; | |
1294 | ||
1295 | dir = FcConfigNormalizeFontDir (FcConfigGetCurrent(), dir); | |
1296 | if (!dir) | |
1297 | return FcFalse; | |
1298 | ||
1299 | /* | |
1300 | * Write it to the first directory in the list which is writable | |
1301 | */ | |
1302 | ||
1303 | list = FcStrListCreate (config->cacheDirs); | |
1304 | if (!list) | |
1305 | return FcFalse; | |
1306 | while ((test_dir = FcStrListNext (list))) { | |
1307 | if (access ((char *) test_dir, W_OK|X_OK) == 0) | |
1308 | { | |
1309 | cache_dir = test_dir; | |
1310 | break; | |
1311 | } | |
1312 | else | |
1313 | { | |
1314 | /* | |
1315 | * If the directory doesn't exist, try to create it | |
1316 | */ | |
1317 | if (access ((char *) test_dir, F_OK) == -1) { | |
1318 | if (FcMakeDirectory (test_dir)) | |
1319 | { | |
1320 | cache_dir = test_dir; | |
1321 | break; | |
1322 | } | |
1323 | } | |
1324 | } | |
1325 | } | |
1326 | FcStrListDone (list); | |
1327 | if (!cache_dir) | |
1328 | return FcFalse; | |
1329 | FcDirCacheBasename (dir, cache_base); | |
1330 | cache_hashed = FcStrPlus (cache_dir, cache_base); | |
1331 | if (!cache_hashed) | |
1332 | return FcFalse; | |
1333 | ||
1334 | current_dir_block = FcDirCacheProduce (set, &metadata); | |
1335 | ||
1336 | if (metadata.count && !current_dir_block) | |
1337 | goto bail1; | |
1338 | ||
1339 | if (FcDebug () & FC_DBG_CACHE) | |
1340 | printf ("FcDirCacheWriteDir dir \"%s\" file \"%s\"\n", | |
1341 | dir, cache_hashed); | |
1342 | ||
1343 | atomic = FcAtomicCreate ((FcChar8 *)cache_hashed); | |
1344 | if (!atomic) | |
1345 | goto bail1; | |
1346 | ||
1347 | if (!FcAtomicLock (atomic)) | |
1348 | goto bail2; | |
1349 | ||
1350 | /* open the original file to save relevant portions */ | |
1351 | fd_orig = open((char *)FcAtomicOrigFile (atomic), O_RDONLY | O_BINARY); | |
1352 | ||
1353 | fd = open((char *)FcAtomicNewFile (atomic), O_RDWR | O_CREAT | O_BINARY, 0666); | |
1354 | if (fd == -1) | |
1355 | goto bail3; | |
1356 | ||
1357 | FcCacheWriteString (fd, (char *) dir); | |
1358 | ||
1359 | current_arch_machine_name = FcCacheMachineSignature (); | |
1360 | current_arch_start = 0; | |
1361 | ||
1362 | if (fd_orig != -1) | |
1363 | current_arch_start = | |
1364 | FcCacheSkipToArch(fd_orig, current_arch_machine_name); | |
1365 | ||
1366 | if (current_arch_start < 0) | |
1367 | { | |
1368 | off_t offset = lseek(fd_orig, 0, SEEK_END); | |
1369 | current_arch_start = FcCacheNextOffset (offset); | |
1370 | } | |
1371 | ||
1372 | if (fd_orig != -1 && !FcCacheCopyOld(fd, fd_orig, current_arch_start)) | |
1373 | goto bail4; | |
1374 | ||
1375 | if (fd_orig != -1) | |
1376 | close (fd_orig); | |
1377 | ||
1378 | current_arch_start = lseek(fd, 0, SEEK_CUR); | |
1379 | #if defined (HAVE_FTRUNCATE) | |
1380 | if (ftruncate (fd, current_arch_start) == -1) | |
1381 | goto bail4; | |
1382 | #else | |
1383 | #if defined (HAVE_CHSIZE) | |
1384 | if (chsize (fd, current_arch_start) == -1) | |
1385 | goto bail4; | |
1386 | #else | |
1387 | goto bail4; | |
1388 | #endif | |
1389 | #endif | |
1390 | ||
1391 | /* allocate space for subdir names in this block */ | |
1392 | dirs_count = 0; | |
1393 | for (i = 0; i < dirs->size; i++) | |
1394 | dirs_count += strlen((char *)dirs->strs[i]) + 1; | |
1395 | dirs_count ++; | |
1396 | ||
1397 | /* now write the address of the next offset */ | |
1398 | truncate_to = FcCacheNextOffset (FcCacheNextOffset (current_arch_start + sizeof (FcCache) + dirs_count) + metadata.count) - current_arch_start; | |
1399 | header = malloc (10 + strlen (current_arch_machine_name)); | |
1400 | if (!header) | |
1401 | goto bail4; | |
1402 | sprintf (header, "%8x ", (int)truncate_to); | |
1403 | strcat (header, current_arch_machine_name); | |
1404 | if (!FcCacheWriteString (fd, header)) | |
1405 | goto bail5; | |
1406 | ||
1407 | for (i = 0; i < dirs->size; i++) | |
1408 | FcCacheWriteString (fd, (char *)dirs->strs[i]); | |
1409 | FcCacheWriteString (fd, ""); | |
1410 | ||
1411 | if (write (fd, &metadata, sizeof(FcCache)) != sizeof(FcCache)) | |
1412 | { | |
1413 | perror("write metadata"); | |
1414 | goto bail5; | |
1415 | } | |
1416 | if (metadata.count) | |
1417 | { | |
1418 | off_t off = FcCacheNextOffset (lseek(fd, 0, SEEK_END)); | |
1419 | if (lseek (fd, off, SEEK_SET) != off) | |
1420 | perror("lseek"); | |
1421 | else if (write (fd, current_dir_block, metadata.count) != | |
1422 | metadata.count) | |
1423 | perror("write current_dir_block"); | |
1424 | free (current_dir_block); | |
1425 | current_dir_block = 0; | |
1426 | } | |
1427 | ||
1428 | /* this actually serves to pad out the cache file, if needed */ | |
1429 | #if defined (HAVE_FTRUNCATE) | |
1430 | if (ftruncate (fd, current_arch_start + truncate_to) == -1) | |
1431 | goto bail5; | |
1432 | #else | |
1433 | #if defined (HAVE_CHSIZE) | |
1434 | if (chsize (fd, current_arch_start + truncate_to) == -1) | |
1435 | goto bail5; | |
1436 | #else | |
1437 | goto bail5; | |
1438 | #endif | |
1439 | #endif | |
1440 | ||
1441 | free (header); | |
1442 | close(fd); | |
1443 | if (!FcAtomicReplaceOrig(atomic)) | |
1444 | goto bail3; | |
1445 | FcStrFree ((FcChar8 *)cache_hashed); | |
1446 | FcAtomicUnlock (atomic); | |
1447 | FcAtomicDestroy (atomic); | |
1448 | return FcTrue; | |
1449 | ||
1450 | bail5: | |
1451 | free (header); | |
1452 | bail4: | |
1453 | close (fd); | |
1454 | bail3: | |
1455 | FcAtomicUnlock (atomic); | |
1456 | bail2: | |
1457 | FcAtomicDestroy (atomic); | |
1458 | bail1: | |
1459 | FcStrFree ((FcChar8 *)cache_hashed); | |
1460 | if (current_dir_block) | |
1461 | free (current_dir_block); | |
1462 | return FcFalse; | |
1463 | } | |
1464 | ||
1465 | static char * | |
1466 | FcCacheMachineSignature () | |
1467 | { | |
1468 | static char buf[MACHINE_SIGNATURE_SIZE]; | |
1469 | int32_t magic = ENDIAN_TEST; | |
1470 | char * m = (char *)&magic; | |
1471 | ||
1472 | sprintf (buf, "%2x%2x%2x%2x " | |
1473 | "%4x %4x %4x %4x %4x %4x %4x %4x %4x %4x %4x %4x " | |
1474 | "%4x %4x %4x %4x %4x %4x %4x %4x\n", | |
1475 | m[0], m[1], m[2], m[3], | |
1476 | (unsigned int)sizeof (char), | |
1477 | (unsigned int)sizeof (char *), | |
1478 | (unsigned int)sizeof (int), | |
1479 | (unsigned int)sizeof (FcPattern), | |
1480 | (unsigned int)sizeof (FcPatternEltPtr), | |
1481 | (unsigned int)sizeof (struct _FcPatternElt *), | |
1482 | (unsigned int)sizeof (FcPatternElt), | |
1483 | (unsigned int)sizeof (FcObjectPtr), | |
1484 | (unsigned int)sizeof (FcValueListPtr), | |
1485 | (unsigned int)sizeof (FcValue), | |
1486 | (unsigned int)sizeof (FcValueBinding), | |
1487 | (unsigned int)sizeof (struct _FcValueList *), | |
1488 | (unsigned int)sizeof (FcCharSet), | |
1489 | (unsigned int)sizeof (FcCharLeaf **), | |
1490 | (unsigned int)sizeof (FcChar16 *), | |
1491 | (unsigned int)sizeof (FcChar16), | |
1492 | (unsigned int)sizeof (FcCharLeaf), | |
1493 | (unsigned int)sizeof (FcChar32), | |
1494 | (unsigned int)sizeof (FcCache), | |
1495 | #if defined (HAVE_SYSCONF) | |
1496 | (unsigned int)sysconf(_SC_PAGESIZE)); | |
1497 | #else | |
1498 | (unsigned int)FC_HARDCODED_PAGESIZE); | |
1499 | #endif | |
1500 | ||
1501 | return buf; | |
1502 | } | |
1503 | ||
1504 | static int banks_ptr = 0, banks_alloc = 0; | |
1505 | int * _fcBankId = 0, * _fcBankIdx = 0; | |
1506 | static const char ** bankDirs = 0; | |
1507 | ||
1508 | static FcBool | |
1509 | FcCacheHaveBank (int bank) | |
1510 | { | |
1511 | int i; | |
1512 | ||
1513 | if (bank < FC_BANK_FIRST) | |
1514 | return FcTrue; | |
1515 | ||
1516 | for (i = 0; i < banks_ptr; i++) | |
1517 | if (_fcBankId[i] == bank) | |
1518 | return FcTrue; | |
1519 | ||
1520 | return FcFalse; | |
1521 | } | |
1522 | ||
1523 | int | |
1524 | FcCacheBankToIndexMTF (int bank) | |
1525 | { | |
1526 | int i, j; | |
1527 | ||
1528 | for (i = 0; i < banks_ptr; i++) | |
1529 | if (_fcBankId[_fcBankIdx[i]] == bank) | |
1530 | { | |
1531 | int t = _fcBankIdx[i]; | |
1532 | ||
1533 | for (j = i; j > 0; j--) | |
1534 | _fcBankIdx[j] = _fcBankIdx[j-1]; | |
1535 | _fcBankIdx[0] = t; | |
1536 | return t; | |
1537 | } | |
1538 | ||
1539 | if (banks_ptr >= banks_alloc) | |
1540 | { | |
1541 | int * b, * bidx; | |
1542 | const char ** bds; | |
1543 | ||
1544 | b = realloc (_fcBankId, (banks_alloc + 4) * sizeof(int)); | |
1545 | if (!b) | |
1546 | return -1; | |
1547 | _fcBankId = b; | |
1548 | ||
1549 | bidx = realloc (_fcBankIdx, (banks_alloc + 4) * sizeof(int)); | |
1550 | if (!bidx) | |
1551 | return -1; | |
1552 | _fcBankIdx = bidx; | |
1553 | ||
1554 | bds = realloc (bankDirs, (banks_alloc + 4) * sizeof (char *)); | |
1555 | if (!bds) | |
1556 | return -1; | |
1557 | bankDirs = bds; | |
1558 | ||
1559 | banks_alloc += 4; | |
1560 | } | |
1561 | ||
1562 | i = banks_ptr++; | |
1563 | _fcBankId[i] = bank; | |
1564 | _fcBankIdx[i] = i; | |
1565 | return i; | |
1566 | } | |
1567 | ||
1568 | static void | |
1569 | FcCacheAddBankDir (int bank, const char * dir) | |
1570 | { | |
1571 | int bi = FcCacheBankToIndexMTF (bank); | |
1572 | ||
1573 | if (bi < 0) | |
1574 | return; | |
1575 | ||
1576 | bankDirs[bi] = (const char *)FcStrCopy ((FcChar8 *)dir); | |
1577 | } | |
1578 | ||
1579 | const char * | |
1580 | FcCacheFindBankDir (int bank) | |
1581 | { | |
1582 | int bi = FcCacheBankToIndex (bank); | |
1583 | return bankDirs[bi]; | |
1584 | } | |
1585 | ||
1586 | /* | |
1587 | * This code implements the MD5 message-digest algorithm. | |
1588 | * The algorithm is due to Ron Rivest. This code was | |
1589 | * written by Colin Plumb in 1993, no copyright is claimed. | |
1590 | * This code is in the public domain; do with it what you wish. | |
1591 | * | |
1592 | * Equivalent code is available from RSA Data Security, Inc. | |
1593 | * This code has been tested against that, and is equivalent, | |
1594 | * except that you don't need to include two pages of legalese | |
1595 | * with every copy. | |
1596 | * | |
1597 | * To compute the message digest of a chunk of bytes, declare an | |
1598 | * MD5Context structure, pass it to MD5Init, call MD5Update as | |
1599 | * needed on buffers full of bytes, and then call MD5Final, which | |
1600 | * will fill a supplied 16-byte array with the digest. | |
1601 | */ | |
1602 | ||
1603 | #ifndef HIGHFIRST | |
1604 | #define byteReverse(buf, len) /* Nothing */ | |
1605 | #else | |
1606 | /* | |
1607 | * Note: this code is harmless on little-endian machines. | |
1608 | */ | |
1609 | void byteReverse(unsigned char *buf, unsigned longs) | |
1610 | { | |
1611 | FcChar32 t; | |
1612 | do { | |
1613 | t = (FcChar32) ((unsigned) buf[3] << 8 | buf[2]) << 16 | | |
1614 | ((unsigned) buf[1] << 8 | buf[0]); | |
1615 | *(FcChar32 *) buf = t; | |
1616 | buf += 4; | |
1617 | } while (--longs); | |
1618 | } | |
1619 | #endif | |
1620 | ||
1621 | /* | |
1622 | * Start MD5 accumulation. Set bit count to 0 and buffer to mysterious | |
1623 | * initialization constants. | |
1624 | */ | |
1625 | static void MD5Init(struct MD5Context *ctx) | |
1626 | { | |
1627 | ctx->buf[0] = 0x67452301; | |
1628 | ctx->buf[1] = 0xefcdab89; | |
1629 | ctx->buf[2] = 0x98badcfe; | |
1630 | ctx->buf[3] = 0x10325476; | |
1631 | ||
1632 | ctx->bits[0] = 0; | |
1633 | ctx->bits[1] = 0; | |
1634 | } | |
1635 | ||
1636 | /* | |
1637 | * Update context to reflect the concatenation of another buffer full | |
1638 | * of bytes. | |
1639 | */ | |
1640 | static void MD5Update(struct MD5Context *ctx, unsigned char *buf, unsigned len) | |
1641 | { | |
1642 | FcChar32 t; | |
1643 | ||
1644 | /* Update bitcount */ | |
1645 | ||
1646 | t = ctx->bits[0]; | |
1647 | if ((ctx->bits[0] = t + ((FcChar32) len << 3)) < t) | |
1648 | ctx->bits[1]++; /* Carry from low to high */ | |
1649 | ctx->bits[1] += len >> 29; | |
1650 | ||
1651 | t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data */ | |
1652 | ||
1653 | /* Handle any leading odd-sized chunks */ | |
1654 | ||
1655 | if (t) { | |
1656 | unsigned char *p = (unsigned char *) ctx->in + t; | |
1657 | ||
1658 | t = 64 - t; | |
1659 | if (len < t) { | |
1660 | memcpy(p, buf, len); | |
1661 | return; | |
1662 | } | |
1663 | memcpy(p, buf, t); | |
1664 | byteReverse(ctx->in, 16); | |
1665 | MD5Transform(ctx->buf, (FcChar32 *) ctx->in); | |
1666 | buf += t; | |
1667 | len -= t; | |
1668 | } | |
1669 | /* Process data in 64-byte chunks */ | |
1670 | ||
1671 | while (len >= 64) { | |
1672 | memcpy(ctx->in, buf, 64); | |
1673 | byteReverse(ctx->in, 16); | |
1674 | MD5Transform(ctx->buf, (FcChar32 *) ctx->in); | |
1675 | buf += 64; | |
1676 | len -= 64; | |
1677 | } | |
1678 | ||
1679 | /* Handle any remaining bytes of data. */ | |
1680 | ||
1681 | memcpy(ctx->in, buf, len); | |
1682 | } | |
1683 | ||
1684 | /* | |
1685 | * Final wrapup - pad to 64-byte boundary with the bit pattern | |
1686 | * 1 0* (64-bit count of bits processed, MSB-first) | |
1687 | */ | |
1688 | static void MD5Final(unsigned char digest[16], struct MD5Context *ctx) | |
1689 | { | |
1690 | unsigned count; | |
1691 | unsigned char *p; | |
1692 | ||
1693 | /* Compute number of bytes mod 64 */ | |
1694 | count = (ctx->bits[0] >> 3) & 0x3F; | |
1695 | ||
1696 | /* Set the first char of padding to 0x80. This is safe since there is | |
1697 | always at least one byte free */ | |
1698 | p = ctx->in + count; | |
1699 | *p++ = 0x80; | |
1700 | ||
1701 | /* Bytes of padding needed to make 64 bytes */ | |
1702 | count = 64 - 1 - count; | |
1703 | ||
1704 | /* Pad out to 56 mod 64 */ | |
1705 | if (count < 8) { | |
1706 | /* Two lots of padding: Pad the first block to 64 bytes */ | |
1707 | memset(p, 0, count); | |
1708 | byteReverse(ctx->in, 16); | |
1709 | MD5Transform(ctx->buf, (FcChar32 *) ctx->in); | |
1710 | ||
1711 | /* Now fill the next block with 56 bytes */ | |
1712 | memset(ctx->in, 0, 56); | |
1713 | } else { | |
1714 | /* Pad block to 56 bytes */ | |
1715 | memset(p, 0, count - 8); | |
1716 | } | |
1717 | byteReverse(ctx->in, 14); | |
1718 | ||
1719 | /* Append length in bits and transform */ | |
1720 | ((FcChar32 *) ctx->in)[14] = ctx->bits[0]; | |
1721 | ((FcChar32 *) ctx->in)[15] = ctx->bits[1]; | |
1722 | ||
1723 | MD5Transform(ctx->buf, (FcChar32 *) ctx->in); | |
1724 | byteReverse((unsigned char *) ctx->buf, 4); | |
1725 | memcpy(digest, ctx->buf, 16); | |
1726 | memset(ctx, 0, sizeof(ctx)); /* In case it's sensitive */ | |
1727 | } | |
1728 | ||
1729 | ||
1730 | /* The four core functions - F1 is optimized somewhat */ | |
1731 | ||
1732 | /* #define F1(x, y, z) (x & y | ~x & z) */ | |
1733 | #define F1(x, y, z) (z ^ (x & (y ^ z))) | |
1734 | #define F2(x, y, z) F1(z, x, y) | |
1735 | #define F3(x, y, z) (x ^ y ^ z) | |
1736 | #define F4(x, y, z) (y ^ (x | ~z)) | |
1737 | ||
1738 | /* This is the central step in the MD5 algorithm. */ | |
1739 | #define MD5STEP(f, w, x, y, z, data, s) \ | |
1740 | ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x ) | |
1741 | ||
1742 | /* | |
1743 | * The core of the MD5 algorithm, this alters an existing MD5 hash to | |
1744 | * reflect the addition of 16 longwords of new data. MD5Update blocks | |
1745 | * the data and converts bytes into longwords for this routine. | |
1746 | */ | |
1747 | static void MD5Transform(FcChar32 buf[4], FcChar32 in[16]) | |
1748 | { | |
1749 | register FcChar32 a, b, c, d; | |
1750 | ||
1751 | a = buf[0]; | |
1752 | b = buf[1]; | |
1753 | c = buf[2]; | |
1754 | d = buf[3]; | |
1755 | ||
1756 | MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7); | |
1757 | MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12); | |
1758 | MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17); | |
1759 | MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22); | |
1760 | MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7); | |
1761 | MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12); | |
1762 | MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17); | |
1763 | MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22); | |
1764 | MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7); | |
1765 | MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12); | |
1766 | MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17); | |
1767 | MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22); | |
1768 | MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7); | |
1769 | MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12); | |
1770 | MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17); | |
1771 | MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22); | |
1772 | ||
1773 | MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5); | |
1774 | MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9); | |
1775 | MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14); | |
1776 | MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20); | |
1777 | MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5); | |
1778 | MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9); | |
1779 | MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14); | |
1780 | MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20); | |
1781 | MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5); | |
1782 | MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9); | |
1783 | MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14); | |
1784 | MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20); | |
1785 | MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5); | |
1786 | MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9); | |
1787 | MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14); | |
1788 | MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20); | |
1789 | ||
1790 | MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4); | |
1791 | MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11); | |
1792 | MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16); | |
1793 | MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23); | |
1794 | MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4); | |
1795 | MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11); | |
1796 | MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16); | |
1797 | MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23); | |
1798 | MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4); | |
1799 | MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11); | |
1800 | MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16); | |
1801 | MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23); | |
1802 | MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4); | |
1803 | MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11); | |
1804 | MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16); | |
1805 | MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23); | |
1806 | ||
1807 | MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6); | |
1808 | MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10); | |
1809 | MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15); | |
1810 | MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21); | |
1811 | MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6); | |
1812 | MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10); | |
1813 | MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15); | |
1814 | MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21); | |
1815 | MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6); | |
1816 | MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10); | |
1817 | MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15); | |
1818 | MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21); | |
1819 | MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6); | |
1820 | MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10); | |
1821 | MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15); | |
1822 | MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21); | |
1823 | ||
1824 | buf[0] += a; | |
1825 | buf[1] += b; | |
1826 | buf[2] += c; | |
1827 | buf[3] += d; | |
1828 | } |