Bug Summary

File:src/fccache.c
Location:line 431, column 40
Description:Dereference of undefined pointer value

Annotated Source Code

1/*
2 * Copyright © 2000 Keith Packard
3 * Copyright © 2005 Patrick Lam
4 *
5 * Permission to use, copy, modify, distribute, and sell this software and its
6 * documentation for any purpose is hereby granted without fee, provided that
7 * the above copyright notice appear in all copies and that both that
8 * copyright notice and this permission notice appear in supporting
9 * documentation, and that the name of the author(s) not be used in
10 * advertising or publicity pertaining to distribution of the software without
11 * specific, written prior permission. The authors make no
12 * representations about the suitability of this software for any purpose. It
13 * is provided "as is" without express or implied warranty.
14 *
15 * THE AUTHOR(S) DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
16 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
17 * EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY SPECIAL, INDIRECT OR
18 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
19 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
20 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
21 * PERFORMANCE OF THIS SOFTWARE.
22 */
23#ifdef HAVE_CONFIG_H1
24#include "config.h"
25#endif
26#include "fcint.h"
27#include "fcarch.h"
28#include <stdio.h>
29#include <stdlib.h>
30#include <fcntl.h>
31#include <dirent.h>
32#include <string.h>
33#include <sys/types.h>
34#include <time.h>
35#include <assert.h>
36#if defined(HAVE_MMAP1) || defined(__CYGWIN__)
37# include <unistd.h>
38# include <sys/mman.h>
39#endif
40
41#ifndef O_BINARY0
42#define O_BINARY0 0
43#endif
44
45
46struct MD5Context {
47 FcChar32 buf[4];
48 FcChar32 bits[2];
49 unsigned char in[64];
50};
51
52static void MD5Init(struct MD5Context *ctx);
53static void MD5Update(struct MD5Context *ctx, const unsigned char *buf, unsigned len);
54static void MD5Final(unsigned char digest[16], struct MD5Context *ctx);
55static void MD5Transform(FcChar32 buf[4], FcChar32 in[16]);
56
57#define CACHEBASE_LEN(1 + 32 + 1 + sizeof ("be" "32d8") + sizeof (".cache-" "3")) (1 + 32 + 1 + sizeof (FC_ARCHITECTURE"be" "32d8") + sizeof (FC_CACHE_SUFFIX".cache-" "3"))
58
59static FcBool
60FcCacheIsMmapSafe (int fd)
61{
62 static FcBool is_initialized = FcFalse0;
63 static FcBool is_env_available = FcFalse0;
64 static FcBool use_mmap = FcFalse0;
65
66 if (!is_initialized)
67 {
68 const char *env;
69
70 env = getenv ("FONTCONFIG_USE_MMAP");
71 if (env)
72 {
73 if (FcNameBool ((const FcChar8 *)env, &use_mmap))
74 is_env_available = FcTrue1;
75 }
76 is_initialized = FcTrue1;
77 }
78 if (is_env_available)
79 return use_mmap;
80
81 return FcIsFsMmapSafe (fd);
82}
83
84static const char bin2hex[] = { '0', '1', '2', '3',
85 '4', '5', '6', '7',
86 '8', '9', 'a', 'b',
87 'c', 'd', 'e', 'f' };
88
89static FcChar8 *
90FcDirCacheBasename (const FcChar8 * dir, FcChar8 cache_base[CACHEBASE_LEN(1 + 32 + 1 + sizeof ("be" "32d8") + sizeof (".cache-" "3"))])
91{
92 unsigned char hash[16];
93 FcChar8 *hex_hash;
94 int cnt;
95 struct MD5Context ctx;
96
97 MD5Init (&ctx);
98 MD5Update (&ctx, (const unsigned char *)dir, strlen ((const char *) dir));
99
100 MD5Final (hash, &ctx);
101
102 cache_base[0] = '/';
103 hex_hash = cache_base + 1;
104 for (cnt = 0; cnt < 16; ++cnt)
105 {
106 hex_hash[2*cnt ] = bin2hex[hash[cnt] >> 4];
107 hex_hash[2*cnt+1] = bin2hex[hash[cnt] & 0xf];
108 }
109 hex_hash[2*cnt] = 0;
110 strcat ((char *) cache_base, "-" FC_ARCHITECTURE"be" "32d8" FC_CACHE_SUFFIX".cache-" "3");
111
112 return cache_base;
113}
114
115FcBool
116FcDirCacheUnlink (const FcChar8 *dir, FcConfig *config)
117{
118 FcChar8 *cache_hashed = NULL((void*)0);
119 FcChar8 cache_base[CACHEBASE_LEN(1 + 32 + 1 + sizeof ("be" "32d8") + sizeof (".cache-" "3"))];
120 FcStrList *list;
121 FcChar8 *cache_dir;
122
123 FcDirCacheBasename (dir, cache_base);
124
125 list = FcStrListCreateIA__FcStrListCreate (config->cacheDirs);
126 if (!list)
127 return FcFalse0;
128
129 while ((cache_dir = FcStrListNextIA__FcStrListNext (list)))
130 {
131 cache_hashed = FcStrPlusIA__FcStrPlus (cache_dir, cache_base);
132 if (!cache_hashed)
133 break;
134 (void) unlink ((char *) cache_hashed);
135 FcStrFreeIA__FcStrFree (cache_hashed);
136 }
137 FcStrListDoneIA__FcStrListDone (list);
138 /* return FcFalse if something went wrong */
139 if (cache_dir)
140 return FcFalse0;
141 return FcTrue1;
142}
143
144static int
145FcDirCacheOpenFile (const FcChar8 *cache_file, struct stat *file_stat)
146{
147 int fd;
148
149#ifdef _WIN32
150 if (FcStat (cache_file, file_stat) < 0)
151 return -1;
152#endif
153 fd = open((char *) cache_file, O_RDONLY00 | O_BINARY0);
154 if (fd < 0)
155 return fd;
156#ifndef _WIN32
157 if (fstat (fd, file_stat) < 0)
158 {
159 close (fd);
160 return -1;
161 }
162#endif
163 return fd;
164}
165
166/*
167 * Look for a cache file for the specified dir. Attempt
168 * to use each one we find, stopping when the callback
169 * indicates success
170 */
171static FcBool
172FcDirCacheProcess (FcConfig *config, const FcChar8 *dir,
173 FcBool (*callback) (int fd, struct stat *fd_stat,
174 struct stat *dir_stat, void *closure),
175 void *closure, FcChar8 **cache_file_ret)
176{
177 int fd = -1;
178 FcChar8 cache_base[CACHEBASE_LEN(1 + 32 + 1 + sizeof ("be" "32d8") + sizeof (".cache-" "3"))];
179 FcStrList *list;
180 FcChar8 *cache_dir;
181 struct stat file_stat, dir_stat;
182 FcBool ret = FcFalse0;
183
184 if (FcStatChecksum (dir, &dir_stat) < 0)
185 return FcFalse0;
186
187 FcDirCacheBasename (dir, cache_base);
188
189 list = FcStrListCreateIA__FcStrListCreate (config->cacheDirs);
190 if (!list)
191 return FcFalse0;
192
193 while ((cache_dir = FcStrListNextIA__FcStrListNext (list)))
194 {
195 FcChar8 *cache_hashed = FcStrPlusIA__FcStrPlus (cache_dir, cache_base);
196 if (!cache_hashed)
197 break;
198 fd = FcDirCacheOpenFile (cache_hashed, &file_stat);
199 if (fd >= 0) {
200 ret = (*callback) (fd, &file_stat, &dir_stat, closure);
201 close (fd);
202 if (ret)
203 {
204 if (cache_file_ret)
205 *cache_file_ret = cache_hashed;
206 else
207 FcStrFreeIA__FcStrFree (cache_hashed);
208 break;
209 }
210 }
211 FcStrFreeIA__FcStrFree (cache_hashed);
212 }
213 FcStrListDoneIA__FcStrListDone (list);
214
215 return ret;
216}
217
218#define FC_CACHE_MIN_MMAP1024 1024
219
220/*
221 * Skip list element, make sure the 'next' pointer is the last thing
222 * in the structure, it will be allocated large enough to hold all
223 * of the necessary pointers
224 */
225
226typedef struct _FcCacheSkip FcCacheSkip;
227
228struct _FcCacheSkip {
229 FcCache *cache;
230 int ref;
231 intptr_t size;
232 dev_t cache_dev;
233 ino_t cache_ino;
234 time_t cache_mtime;
235 FcCacheSkip *next[1];
236};
237
238/*
239 * The head of the skip list; pointers for every possible level
240 * in the skip list, plus the largest level in the list
241 */
242
243#define FC_CACHE_MAX_LEVEL16 16
244
245static FcCacheSkip *fcCacheChains[FC_CACHE_MAX_LEVEL16];
246static int fcCacheMaxLevel;
247
248
249static int32_t
250FcRandom(void)
251{
252 int32_t result;
253
254#if HAVE_RANDOM_R1
255 static struct random_data fcrandbuf;
256 static char statebuf[256];
257 static FcBool initialized = FcFalse0;
258
259 if (initialized != FcTrue1)
260 {
261 initstate_r(time(NULL((void*)0)), statebuf, 256, &fcrandbuf);
262 initialized = FcTrue1;
263 }
264
265 random_r(&fcrandbuf, &result);
266#elif HAVE_RANDOM1
267 static char statebuf[256];
268 char *state;
269 static FcBool initialized = FcFalse0;
270
271 if (initialized != FcTrue1)
272 {
273 state = initstate(time(NULL((void*)0)), statebuf, 256);
274 initialized = FcTrue1;
275 }
276 else
277 state = setstate(statebuf);
278
279 result = random();
280
281 setstate(state);
282#elif HAVE_LRAND481
283 result = lrand48();
284#elif HAVE_RAND_R1
285 static unsigned int seed = time(NULL((void*)0));
286
287 result = rand_r(&seed);
288#elif HAVE_RAND1
289 static FcBool initialized = FcFalse0;
290
291 if (initialized != FcTrue1)
292 {
293 srand(time(NULL((void*)0)));
294 initialized = FcTrue1;
295 }
296 result = rand();
297#else
298# error no random number generator function available.
299#endif
300
301 return result;
302}
303
304/*
305 * Generate a random level number, distributed
306 * so that each level is 1/4 as likely as the one before
307 *
308 * Note that level numbers run 1 <= level <= MAX_LEVEL
309 */
310static int
311random_level (void)
312{
313 /* tricky bit -- each bit is '1' 75% of the time */
314 long int bits = FcRandom () | FcRandom ();
315 int level = 0;
316
317 while (++level < FC_CACHE_MAX_LEVEL16)
318 {
319 if (bits & 1)
320 break;
321 bits >>= 1;
322 }
323 return level;
324}
325
326/*
327 * Insert cache into the list
328 */
329static FcBool
330FcCacheInsert (FcCache *cache, struct stat *cache_stat)
331{
332 FcCacheSkip **update[FC_CACHE_MAX_LEVEL16];
333 FcCacheSkip *s, **next;
334 int i, level;
335
336 /*
337 * Find links along each chain
338 */
339 next = fcCacheChains;
340 for (i = fcCacheMaxLevel; --i >= 0; )
341 {
342 for (; (s = next[i]); next = s->next)
343 if (s->cache > cache)
344 break;
345 update[i] = &next[i];
346 }
347
348 /*
349 * Create new list element
350 */
351 level = random_level ();
352 if (level > fcCacheMaxLevel)
353 {
354 level = fcCacheMaxLevel + 1;
355 update[fcCacheMaxLevel] = &fcCacheChains[fcCacheMaxLevel];
356 fcCacheMaxLevel = level;
357 }
358
359 s = malloc (sizeof (FcCacheSkip) + (level - 1) * sizeof (FcCacheSkip *));
360 if (!s)
361 return FcFalse0;
362
363 s->cache = cache;
364 s->size = cache->size;
365 s->ref = 1;
366 if (cache_stat)
367 {
368 s->cache_dev = cache_stat->st_dev;
369 s->cache_ino = cache_stat->st_ino;
370 s->cache_mtime = cache_stat->st_mtimest_mtim.tv_sec;
371 }
372 else
373 {
374 s->cache_dev = 0;
375 s->cache_ino = 0;
376 s->cache_mtime = 0;
377 }
378
379 /*
380 * Insert into all fcCacheChains
381 */
382 for (i = 0; i < level; i++)
383 {
384 s->next[i] = *update[i];
385 *update[i] = s;
386 }
387 return FcTrue1;
388}
389
390static FcCacheSkip *
391FcCacheFindByAddr (void *object)
392{
393 int i;
394 FcCacheSkip **next = fcCacheChains;
395 FcCacheSkip *s;
396
397 /*
398 * Walk chain pointers one level at a time
399 */
400 for (i = fcCacheMaxLevel; --i >= 0;)
401 while (next[i] && (char *) object >= ((char *) next[i]->cache + next[i]->size))
402 next = next[i]->next;
403 /*
404 * Here we are
405 */
406 s = next[0];
407 if (s && (char *) object < ((char *) s->cache + s->size))
408 return s;
409 return NULL((void*)0);
410}
411
412static void
413FcCacheRemove (FcCache *cache)
414{
415 FcCacheSkip **update[FC_CACHE_MAX_LEVEL16];
416 FcCacheSkip *s, **next;
417 int i;
418
419 /*
420 * Find links along each chain
421 */
422 next = fcCacheChains;
423 for (i = fcCacheMaxLevel; --i >= 0; )
1
Loop condition is true. Entering loop body
3
Loop condition is false. Execution continues on line 430
424 {
425 for (; (s = next[i]); next = s->next)
2
Loop condition is false. Execution continues on line 428
426 if (s->cache >= cache)
427 break;
428 update[i] = &next[i];
429 }
430 s = next[0];
431 for (i = 0; i < fcCacheMaxLevel && *update[i] == s; i++)
4
Dereference of undefined pointer value
432 *update[i] = s->next[i];
433 while (fcCacheMaxLevel > 0 && fcCacheChains[fcCacheMaxLevel - 1] == NULL((void*)0))
434 fcCacheMaxLevel--;
435 free (s);
436}
437
438static FcCache *
439FcCacheFindByStat (struct stat *cache_stat)
440{
441 FcCacheSkip *s;
442
443 for (s = fcCacheChains[0]; s; s = s->next[0])
444 if (s->cache_dev == cache_stat->st_dev &&
445 s->cache_ino == cache_stat->st_ino &&
446 s->cache_mtime == cache_stat->st_mtimest_mtim.tv_sec)
447 {
448 s->ref++;
449 return s->cache;
450 }
451 return NULL((void*)0);
452}
453
454static void
455FcDirCacheDispose (FcCache *cache)
456{
457 switch (cache->magic) {
458 case FC_CACHE_MAGIC_ALLOC0xFC02FC05:
459 free (cache);
460 break;
461 case FC_CACHE_MAGIC_MMAP0xFC02FC04:
462#if defined(HAVE_MMAP1) || defined(__CYGWIN__)
463 munmap (cache, cache->size);
464#elif defined(_WIN32)
465 UnmapViewOfFile (cache);
466#endif
467 break;
468 }
469 FcCacheRemove (cache);
470}
471
472void
473FcCacheObjectReference (void *object)
474{
475 FcCacheSkip *skip = FcCacheFindByAddr (object);
476
477 if (skip)
478 skip->ref++;
479}
480
481void
482FcCacheObjectDereference (void *object)
483{
484 FcCacheSkip *skip = FcCacheFindByAddr (object);
485
486 if (skip)
487 {
488 skip->ref--;
489 if (skip->ref <= 0)
490 FcDirCacheDispose (skip->cache);
491 }
492}
493
494void
495FcCacheFini (void)
496{
497 int i;
498
499 for (i = 0; i < FC_CACHE_MAX_LEVEL16; i++)
500 assert (fcCacheChains[i] == NULL)((fcCacheChains[i] == ((void*)0)) ? (void) (0) : __assert_fail
("fcCacheChains[i] == ((void*)0)", "fccache.c", 500, __PRETTY_FUNCTION__
));
501 assert (fcCacheMaxLevel == 0)((fcCacheMaxLevel == 0) ? (void) (0) : __assert_fail ("fcCacheMaxLevel == 0"
, "fccache.c", 501, __PRETTY_FUNCTION__));
502}
503
504static FcBool
505FcCacheTimeValid (FcCache *cache, struct stat *dir_stat)
506{
507 struct stat dir_static;
508
509 if (!dir_stat)
510 {
511 if (FcStatChecksum (FcCacheDir (cache)((FcChar8 *) ((intptr_t) (cache) + ((cache)->dir))), &dir_static) < 0)
512 return FcFalse0;
513 dir_stat = &dir_static;
514 }
515 if (FcDebug ()(FcDebugVal) & FC_DBG_CACHE16)
516 printf ("FcCacheTimeValid dir \"%s\" cache checksum %d dir checksum %d\n",
517 FcCacheDir (cache)((FcChar8 *) ((intptr_t) (cache) + ((cache)->dir))), cache->checksum, (int) dir_stat->st_mtimest_mtim.tv_sec);
518 return cache->checksum == (int) dir_stat->st_mtimest_mtim.tv_sec;
519}
520
521/*
522 * Map a cache file into memory
523 */
524static FcCache *
525FcDirCacheMapFd (int fd, struct stat *fd_stat, struct stat *dir_stat)
526{
527 FcCache *cache;
528 FcBool allocated = FcFalse0;
529
530 if (fd_stat->st_size < sizeof (FcCache))
531 return NULL((void*)0);
532 cache = FcCacheFindByStat (fd_stat);
533 if (cache)
534 {
535 if (FcCacheTimeValid (cache, dir_stat))
536 return cache;
537 FcDirCacheUnload (cache);
538 cache = NULL((void*)0);
539 }
540
541 /*
542 * Large cache files are mmap'ed, smaller cache files are read. This
543 * balances the system cost of mmap against per-process memory usage.
544 */
545 if (FcCacheIsMmapSafe (fd) && fd_stat->st_size >= FC_CACHE_MIN_MMAP1024)
546 {
547#if defined(HAVE_MMAP1) || defined(__CYGWIN__)
548 cache = mmap (0, fd_stat->st_size, PROT_READ0x1, MAP_SHARED0x001, fd, 0);
549#ifdef HAVE_POSIX_FADVISE1
550 posix_fadvise (fd, 0, fd_stat->st_size, POSIX_FADV_WILLNEED3);
551#endif
552 if (cache == MAP_FAILED((void *) -1))
553 cache = NULL((void*)0);
554#elif defined(_WIN32)
555 {
556 HANDLE hFileMap;
557
558 cache = NULL((void*)0);
559 hFileMap = CreateFileMapping((HANDLE) _get_osfhandle(fd), NULL((void*)0),
560 PAGE_READONLY, 0, 0, NULL((void*)0));
561 if (hFileMap != NULL((void*)0))
562 {
563 cache = MapViewOfFile (hFileMap, FILE_MAP_READ, 0, 0,
564 fd_stat->st_size);
565 CloseHandle (hFileMap);
566 }
567 }
568#endif
569 }
570 if (!cache)
571 {
572 cache = malloc (fd_stat->st_size);
573 if (!cache)
574 return NULL((void*)0);
575
576 if (read (fd, cache, fd_stat->st_size) != fd_stat->st_size)
577 {
578 free (cache);
579 return NULL((void*)0);
580 }
581 allocated = FcTrue1;
582 }
583 if (cache->magic != FC_CACHE_MAGIC_MMAP0xFC02FC04 ||
584 cache->version < FC_CACHE_CONTENT_VERSION3 ||
585 cache->size != fd_stat->st_size ||
586 !FcCacheTimeValid (cache, dir_stat) ||
587 !FcCacheInsert (cache, fd_stat))
588 {
589 if (allocated)
590 free (cache);
591 else
592 {
593#if defined(HAVE_MMAP1) || defined(__CYGWIN__)
594 munmap (cache, fd_stat->st_size);
595#elif defined(_WIN32)
596 UnmapViewOfFile (cache);
597#endif
598 }
599 return NULL((void*)0);
600 }
601
602 /* Mark allocated caches so they're freed rather than unmapped */
603 if (allocated)
604 cache->magic = FC_CACHE_MAGIC_ALLOC0xFC02FC05;
605
606 return cache;
607}
608
609void
610FcDirCacheReference (FcCache *cache, int nref)
611{
612 FcCacheSkip *skip = FcCacheFindByAddr (cache);
613
614 if (skip)
615 skip->ref += nref;
616}
617
618void
619FcDirCacheUnload (FcCache *cache)
620{
621 FcCacheObjectDereference (cache);
622}
623
624static FcBool
625FcDirCacheMapHelper (int fd, struct stat *fd_stat, struct stat *dir_stat, void *closure)
626{
627 FcCache *cache = FcDirCacheMapFd (fd, fd_stat, dir_stat);
628
629 if (!cache)
630 return FcFalse0;
631 *((FcCache **) closure) = cache;
632 return FcTrue1;
633}
634
635FcCache *
636FcDirCacheLoad (const FcChar8 *dir, FcConfig *config, FcChar8 **cache_file)
637{
638 FcCache *cache = NULL((void*)0);
639
640 if (!FcDirCacheProcess (config, dir,
641 FcDirCacheMapHelper,
642 &cache, cache_file))
643 return NULL((void*)0);
644 return cache;
645}
646
647FcCache *
648FcDirCacheLoadFile (const FcChar8 *cache_file, struct stat *file_stat)
649{
650 int fd;
651 FcCache *cache;
652 struct stat my_file_stat;
653
654 if (!file_stat)
655 file_stat = &my_file_stat;
656 fd = FcDirCacheOpenFile (cache_file, file_stat);
657 if (fd < 0)
658 return NULL((void*)0);
659 cache = FcDirCacheMapFd (fd, file_stat, NULL((void*)0));
660 close (fd);
661 return cache;
662}
663
664/*
665 * Validate a cache file by reading the header and checking
666 * the magic number and the size field
667 */
668static FcBool
669FcDirCacheValidateHelper (int fd, struct stat *fd_stat, struct stat *dir_stat, void *closure)
670{
671 FcBool ret = FcTrue1;
672 FcCache c;
673
674 if (read (fd, &c, sizeof (FcCache)) != sizeof (FcCache))
675 ret = FcFalse0;
676 else if (c.magic != FC_CACHE_MAGIC_MMAP0xFC02FC04)
677 ret = FcFalse0;
678 else if (c.version < FC_CACHE_CONTENT_VERSION3)
679 ret = FcFalse0;
680 else if (fd_stat->st_size != c.size)
681 ret = FcFalse0;
682 else if (c.checksum != (int) dir_stat->st_mtimest_mtim.tv_sec)
683 ret = FcFalse0;
684 return ret;
685}
686
687static FcBool
688FcDirCacheValidConfig (const FcChar8 *dir, FcConfig *config)
689{
690 return FcDirCacheProcess (config, dir,
691 FcDirCacheValidateHelper,
692 NULL((void*)0), NULL((void*)0));
693}
694
695FcBool
696FcDirCacheValid (const FcChar8 *dir)
697{
698 FcConfig *config;
699
700 config = FcConfigGetCurrentIA__FcConfigGetCurrent ();
701 if (!config)
702 return FcFalse0;
703
704 return FcDirCacheValidConfig (dir, config);
705}
706
707/*
708 * Build a cache structure from the given contents
709 */
710FcCache *
711FcDirCacheBuild (FcFontSet *set, const FcChar8 *dir, struct stat *dir_stat, FcStrSet *dirs)
712{
713 FcSerialize *serialize = FcSerializeCreate ();
714 FcCache *cache;
715 int i;
716 FcChar8 *dir_serialize;
717 intptr_t *dirs_serialize;
718 FcFontSet *set_serialize;
719
720 if (!serialize)
721 return NULL((void*)0);
722 /*
723 * Space for cache structure
724 */
725 FcSerializeReserve (serialize, sizeof (FcCache));
726 /*
727 * Directory name
728 */
729 if (!FcStrSerializeAlloc (serialize, dir))
730 goto bail1;
731 /*
732 * Subdirs
733 */
734 FcSerializeAlloc (serialize, dirs, dirs->num * sizeof (FcChar8 *));
735 for (i = 0; i < dirs->num; i++)
736 if (!FcStrSerializeAlloc (serialize, dirs->strs[i]))
737 goto bail1;
738
739 /*
740 * Patterns
741 */
742 if (!FcFontSetSerializeAlloc (serialize, set))
743 goto bail1;
744
745 /* Serialize layout complete. Now allocate space and fill it */
746 cache = malloc (serialize->size);
747 if (!cache)
748 goto bail1;
749 /* shut up valgrind */
750 memset (cache, 0, serialize->size);
751
752 serialize->linear = cache;
753
754 cache->magic = FC_CACHE_MAGIC_ALLOC0xFC02FC05;
755 cache->version = FC_CACHE_CONTENT_VERSION3;
756 cache->size = serialize->size;
757 cache->checksum = (int) dir_stat->st_mtimest_mtim.tv_sec;
758
759 /*
760 * Serialize directory name
761 */
762 dir_serialize = FcStrSerialize (serialize, dir);
763 if (!dir_serialize)
764 goto bail2;
765 cache->dir = FcPtrToOffset (cache, dir_serialize)((intptr_t) (dir_serialize) - (intptr_t) (cache));
766
767 /*
768 * Serialize sub dirs
769 */
770 dirs_serialize = FcSerializePtr (serialize, dirs);
771 if (!dirs_serialize)
772 goto bail2;
773 cache->dirs = FcPtrToOffset (cache, dirs_serialize)((intptr_t) (dirs_serialize) - (intptr_t) (cache));
774 cache->dirs_count = dirs->num;
775 for (i = 0; i < dirs->num; i++)
776 {
777 FcChar8 *d_serialize = FcStrSerialize (serialize, dirs->strs[i]);
778 if (!d_serialize)
779 goto bail2;
780 dirs_serialize[i] = FcPtrToOffset (dirs_serialize, d_serialize)((intptr_t) (d_serialize) - (intptr_t) (dirs_serialize));
781 }
782
783 /*
784 * Serialize font set
785 */
786 set_serialize = FcFontSetSerialize (serialize, set);
787 if (!set_serialize)
788 goto bail2;
789 cache->set = FcPtrToOffset (cache, set_serialize)((intptr_t) (set_serialize) - (intptr_t) (cache));
790
791 FcSerializeDestroy (serialize);
792
793 FcCacheInsert (cache, NULL((void*)0));
794
795 return cache;
796
797bail2:
798 free (cache);
799bail1:
800 FcSerializeDestroy (serialize);
801 return NULL((void*)0);
802}
803
804
805#ifdef _WIN32
806#define mkdir(path,mode) _mkdir(path)
807#endif
808
809static FcBool
810FcMakeDirectory (const FcChar8 *dir)
811{
812 FcChar8 *parent;
813 FcBool ret;
814
815 if (strlen ((char *) dir) == 0)
816 return FcFalse0;
817
818 parent = FcStrDirnameIA__FcStrDirname (dir);
819 if (!parent)
820 return FcFalse0;
821 if (access ((char *) parent, F_OK0) == 0)
822 ret = mkdir ((char *) dir, 0755) == 0 && chmod ((char *) dir, 0755) == 0;
823 else if (access ((char *) parent, F_OK0) == -1)
824 ret = FcMakeDirectory (parent) && (mkdir ((char *) dir, 0755) == 0) && chmod ((char *) dir, 0755) == 0;
825 else
826 ret = FcFalse0;
827 FcStrFreeIA__FcStrFree (parent);
828 return ret;
829}
830
831/* write serialized state to the cache file */
832FcBool
833FcDirCacheWrite (FcCache *cache, FcConfig *config)
834{
835 FcChar8 *dir = FcCacheDir (cache)((FcChar8 *) ((intptr_t) (cache) + ((cache)->dir)));
836 FcChar8 cache_base[CACHEBASE_LEN(1 + 32 + 1 + sizeof ("be" "32d8") + sizeof (".cache-" "3"))];
837 FcChar8 *cache_hashed;
838 int fd;
839 FcAtomic *atomic;
840 FcStrList *list;
841 FcChar8 *cache_dir = NULL((void*)0);
842 FcChar8 *test_dir;
843 FcCacheSkip *skip;
844 struct stat cache_stat;
845 int magic;
846 int written;
847
848 /*
849 * Write it to the first directory in the list which is writable
850 */
851
852 list = FcStrListCreateIA__FcStrListCreate (config->cacheDirs);
853 if (!list)
854 return FcFalse0;
855 while ((test_dir = FcStrListNextIA__FcStrListNext (list))) {
856 if (access ((char *) test_dir, W_OK2|X_OK1) == 0)
857 {
858 cache_dir = test_dir;
859 break;
860 }
861 else
862 {
863 /*
864 * If the directory doesn't exist, try to create it
865 */
866 if (access ((char *) test_dir, F_OK0) == -1) {
867 if (FcMakeDirectory (test_dir))
868 {
869 cache_dir = test_dir;
870 /* Create CACHEDIR.TAG */
871 FcDirCacheCreateTagFile (cache_dir);
872 break;
873 }
874 }
875 /*
876 * Otherwise, try making it writable
877 */
878 else if (chmod ((char *) test_dir, 0755) == 0)
879 {
880 cache_dir = test_dir;
881 /* Try to create CACHEDIR.TAG too */
882 FcDirCacheCreateTagFile (cache_dir);
883 break;
884 }
885 }
886 }
887 FcStrListDoneIA__FcStrListDone (list);
888 if (!cache_dir)
889 return FcFalse0;
890
891 FcDirCacheBasename (dir, cache_base);
892 cache_hashed = FcStrPlusIA__FcStrPlus (cache_dir, cache_base);
893 if (!cache_hashed)
894 return FcFalse0;
895
896 if (FcDebug ()(FcDebugVal) & FC_DBG_CACHE16)
897 printf ("FcDirCacheWriteDir dir \"%s\" file \"%s\"\n",
898 dir, cache_hashed);
899
900 atomic = FcAtomicCreateIA__FcAtomicCreate ((FcChar8 *)cache_hashed);
901 if (!atomic)
902 goto bail1;
903
904 if (!FcAtomicLockIA__FcAtomicLock (atomic))
905 goto bail3;
906
907 fd = open((char *)FcAtomicNewFileIA__FcAtomicNewFile (atomic), O_RDWR02 | O_CREAT0100 | O_BINARY0, 0666);
908 if (fd == -1)
909 goto bail4;
910
911 /* Temporarily switch magic to MMAP while writing to file */
912 magic = cache->magic;
913 if (magic != FC_CACHE_MAGIC_MMAP0xFC02FC04)
914 cache->magic = FC_CACHE_MAGIC_MMAP0xFC02FC04;
915
916 /*
917 * Write cache contents to file
918 */
919 written = write (fd, cache, cache->size);
920
921 /* Switch magic back */
922 if (magic != FC_CACHE_MAGIC_MMAP0xFC02FC04)
923 cache->magic = magic;
924
925 if (written != cache->size)
926 {
927 perror ("write cache");
928 goto bail5;
929 }
930
931 close(fd);
932 if (!FcAtomicReplaceOrigIA__FcAtomicReplaceOrig(atomic))
933 goto bail4;
934
935 /* If the file is small, update the cache chain entry such that the
936 * new cache file is not read again. If it's large, we don't do that
937 * such that we reload it, using mmap, which is shared across processes.
938 */
939 if (cache->size < FC_CACHE_MIN_MMAP1024 &&
940 (skip = FcCacheFindByAddr (cache)) &&
941 FcStat (cache_hashed, &cache_stat))
942 {
943 skip->cache_dev = cache_stat.st_dev;
944 skip->cache_ino = cache_stat.st_ino;
945 skip->cache_mtime = cache_stat.st_mtimest_mtim.tv_sec;
946 }
947
948 FcStrFreeIA__FcStrFree (cache_hashed);
949 FcAtomicUnlockIA__FcAtomicUnlock (atomic);
950 FcAtomicDestroyIA__FcAtomicDestroy (atomic);
951 return FcTrue1;
952
953 bail5:
954 close (fd);
955 bail4:
956 FcAtomicUnlockIA__FcAtomicUnlock (atomic);
957 bail3:
958 FcAtomicDestroyIA__FcAtomicDestroy (atomic);
959 bail1:
960 FcStrFreeIA__FcStrFree (cache_hashed);
961 return FcFalse0;
962}
963
964FcBool
965FcDirCacheClean (const FcChar8 *cache_dir, FcBool verbose)
966{
967 DIR *d;
968 struct dirent *ent;
969 FcChar8 *dir_base;
970 FcBool ret = FcTrue1;
971 FcBool remove;
972 FcCache *cache;
973 struct stat target_stat;
974
975 dir_base = FcStrPlusIA__FcStrPlus (cache_dir, (FcChar8 *) FC_DIR_SEPARATOR_S"/");
976 if (!dir_base)
977 {
978 fprintf (stderrstderr, "Fontconfig error: %s: out of memory\n", cache_dir);
979 return FcFalse0;
980 }
981 if (access ((char *) cache_dir, W_OK2) != 0)
982 {
983 if (verbose || FcDebug ()(FcDebugVal) & FC_DBG_CACHE16)
984 printf ("%s: not cleaning %s cache directory\n", cache_dir,
985 access ((char *) cache_dir, F_OK0) == 0 ? "unwritable" : "non-existent");
986 goto bail0;
987 }
988 if (verbose || FcDebug ()(FcDebugVal) & FC_DBG_CACHE16)
989 printf ("%s: cleaning cache directory\n", cache_dir);
990 d = opendir ((char *) cache_dir);
991 if (!d)
992 {
993 perror ((char *) cache_dir);
994 ret = FcFalse0;
995 goto bail0;
996 }
997 while ((ent = readdir (d)))
998 {
999 FcChar8 *file_name;
1000 const FcChar8 *target_dir;
1001
1002 if (ent->d_name[0] == '.')
1003 continue;
1004 /* skip cache files for different architectures and */
1005 /* files which are not cache files at all */
1006 if (strlen(ent->d_name) != 32 + strlen ("-" FC_ARCHITECTURE"be" "32d8" FC_CACHE_SUFFIX".cache-" "3") ||
1007 strcmp(ent->d_name + 32, "-" FC_ARCHITECTURE"be" "32d8" FC_CACHE_SUFFIX".cache-" "3"))
1008 continue;
1009
1010 file_name = FcStrPlusIA__FcStrPlus (dir_base, (FcChar8 *) ent->d_name);
1011 if (!file_name)
1012 {
1013 fprintf (stderrstderr, "Fontconfig error: %s: allocation failure\n", cache_dir);
1014 ret = FcFalse0;
1015 break;
1016 }
1017 remove = FcFalse0;
1018 cache = FcDirCacheLoadFile (file_name, NULL((void*)0));
1019 if (!cache)
1020 {
1021 if (verbose || FcDebug ()(FcDebugVal) & FC_DBG_CACHE16)
1022 printf ("%s: invalid cache file: %s\n", cache_dir, ent->d_name);
1023 remove = FcTrue1;
1024 }
1025 else
1026 {
1027 target_dir = FcCacheDir (cache)((FcChar8 *) ((intptr_t) (cache) + ((cache)->dir)));
1028 if (stat ((char *) target_dir, &target_stat) < 0)
1029 {
1030 if (verbose || FcDebug ()(FcDebugVal) & FC_DBG_CACHE16)
1031 printf ("%s: %s: missing directory: %s \n",
1032 cache_dir, ent->d_name, target_dir);
1033 remove = FcTrue1;
1034 }
1035 }
1036 if (remove)
1037 {
1038 if (unlink ((char *) file_name) < 0)
1039 {
1040 perror ((char *) file_name);
1041 ret = FcFalse0;
1042 }
1043 }
1044 FcDirCacheUnload (cache);
1045 FcStrFreeIA__FcStrFree (file_name);
1046 }
1047
1048 closedir (d);
1049 bail0:
1050 FcStrFreeIA__FcStrFree (dir_base);
1051
1052 return ret;
1053}
1054
1055/*
1056 * Hokey little macro trick to permit the definitions of C functions
1057 * with the same name as CPP macros
1058 */
1059#define args1(x)(x) (x)
1060#define args2(x,y)(x,y) (x,y)
1061
1062const FcChar8 *
1063FcCacheDir args1(const FcCache *c)(const FcCache *c)
1064{
1065 return FcCacheDir (c)((FcChar8 *) ((intptr_t) (c) + ((c)->dir)));
1066}
1067
1068FcFontSet *
1069FcCacheCopySet args1(const FcCache *c)(const FcCache *c)
1070{
1071 FcFontSet *old = FcCacheSet (c)((FcFontSet *) ((intptr_t) (c) + ((c)->set)));
1072 FcFontSet *new = FcFontSetCreateIA__FcFontSetCreate ();
1073 int i;
1074
1075 if (!new)
1076 return NULL((void*)0);
1077 for (i = 0; i < old->nfont; i++)
1078 {
1079 FcPattern *font = FcFontSetFont (old, i)(((((intptr_t) ((old)->fonts)) & 1) != 0) ? ((FcPattern
*) ((intptr_t) (old) + ((((intptr_t) ((((((intptr_t) ((old)->
fonts)) & 1) != 0) ? ((FcPattern * *) ((intptr_t) (old) +
((((intptr_t) ((old)->fonts)) & ~1)))) : (old)->fonts
)[i])) & ~1)))) : old->fonts[i]);
1080
1081 FcPatternReferenceIA__FcPatternReference (font);
1082 if (!FcFontSetAddIA__FcFontSetAdd (new, font))
1083 {
1084 FcFontSetDestroyIA__FcFontSetDestroy (new);
1085 return NULL((void*)0);
1086 }
1087 }
1088 return new;
1089}
1090
1091const FcChar8 *
1092FcCacheSubdir args2(const FcCache *c, int i)(const FcCache *c,int i)
1093{
1094 return FcCacheSubdir (c, i)((FcChar8 *) ((intptr_t) (((intptr_t *) ((intptr_t) (c) + ((c
)->dirs)))) + (((intptr_t *) ((intptr_t) (c) + ((c)->dirs
)))[i])));
1095}
1096
1097int
1098FcCacheNumSubdir args1(const FcCache *c)(const FcCache *c)
1099{
1100 return c->dirs_count;
1101}
1102
1103int
1104FcCacheNumFont args1(const FcCache *c)(const FcCache *c)
1105{
1106 return FcCacheSet(c)((FcFontSet *) ((intptr_t) (c) + ((c)->set)))->nfont;
1107}
1108
1109/*
1110 * This code implements the MD5 message-digest algorithm.
1111 * The algorithm is due to Ron Rivest. This code was
1112 * written by Colin Plumb in 1993, no copyright is claimed.
1113 * This code is in the public domain; do with it what you wish.
1114 *
1115 * Equivalent code is available from RSA Data Security, Inc.
1116 * This code has been tested against that, and is equivalent,
1117 * except that you don't need to include two pages of legalese
1118 * with every copy.
1119 *
1120 * To compute the message digest of a chunk of bytes, declare an
1121 * MD5Context structure, pass it to MD5Init, call MD5Update as
1122 * needed on buffers full of bytes, and then call MD5Final, which
1123 * will fill a supplied 16-byte array with the digest.
1124 */
1125
1126#ifndef HIGHFIRST
1127#define byteReverse(buf, len) /* Nothing */
1128#else
1129/*
1130 * Note: this code is harmless on little-endian machines.
1131 */
1132void byteReverse(unsigned char *buf, unsigned longs)
1133{
1134 FcChar32 t;
1135 do {
1136 t = (FcChar32) ((unsigned) buf[3] << 8 | buf[2]) << 16 |
1137 ((unsigned) buf[1] << 8 | buf[0]);
1138 *(FcChar32 *) buf = t;
1139 buf += 4;
1140 } while (--longs);
1141}
1142#endif
1143
1144/*
1145 * Start MD5 accumulation. Set bit count to 0 and buffer to mysterious
1146 * initialization constants.
1147 */
1148static void MD5Init(struct MD5Context *ctx)
1149{
1150 ctx->buf[0] = 0x67452301;
1151 ctx->buf[1] = 0xefcdab89;
1152 ctx->buf[2] = 0x98badcfe;
1153 ctx->buf[3] = 0x10325476;
1154
1155 ctx->bits[0] = 0;
1156 ctx->bits[1] = 0;
1157}
1158
1159/*
1160 * Update context to reflect the concatenation of another buffer full
1161 * of bytes.
1162 */
1163static void MD5Update(struct MD5Context *ctx, const unsigned char *buf, unsigned len)
1164{
1165 FcChar32 t;
1166
1167 /* Update bitcount */
1168
1169 t = ctx->bits[0];
1170 if ((ctx->bits[0] = t + ((FcChar32) len << 3)) < t)
1171 ctx->bits[1]++; /* Carry from low to high */
1172 ctx->bits[1] += len >> 29;
1173
1174 t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data */
1175
1176 /* Handle any leading odd-sized chunks */
1177
1178 if (t) {
1179 unsigned char *p = (unsigned char *) ctx->in + t;
1180
1181 t = 64 - t;
1182 if (len < t) {
1183 memcpy(p, buf, len);
1184 return;
1185 }
1186 memcpy(p, buf, t);
1187 byteReverse(ctx->in, 16);
1188 MD5Transform(ctx->buf, (FcChar32 *) ctx->in);
1189 buf += t;
1190 len -= t;
1191 }
1192 /* Process data in 64-byte chunks */
1193
1194 while (len >= 64) {
1195 memcpy(ctx->in, buf, 64);
1196 byteReverse(ctx->in, 16);
1197 MD5Transform(ctx->buf, (FcChar32 *) ctx->in);
1198 buf += 64;
1199 len -= 64;
1200 }
1201
1202 /* Handle any remaining bytes of data. */
1203
1204 memcpy(ctx->in, buf, len);
1205}
1206
1207/*
1208 * Final wrapup - pad to 64-byte boundary with the bit pattern
1209 * 1 0* (64-bit count of bits processed, MSB-first)
1210 */
1211static void MD5Final(unsigned char digest[16], struct MD5Context *ctx)
1212{
1213 unsigned count;
1214 unsigned char *p;
1215
1216 /* Compute number of bytes mod 64 */
1217 count = (ctx->bits[0] >> 3) & 0x3F;
1218
1219 /* Set the first char of padding to 0x80. This is safe since there is
1220 always at least one byte free */
1221 p = ctx->in + count;
1222 *p++ = 0x80;
1223
1224 /* Bytes of padding needed to make 64 bytes */
1225 count = 64 - 1 - count;
1226
1227 /* Pad out to 56 mod 64 */
1228 if (count < 8) {
1229 /* Two lots of padding: Pad the first block to 64 bytes */
1230 memset(p, 0, count);
1231 byteReverse(ctx->in, 16);
1232 MD5Transform(ctx->buf, (FcChar32 *) ctx->in);
1233
1234 /* Now fill the next block with 56 bytes */
1235 memset(ctx->in, 0, 56);
1236 } else {
1237 /* Pad block to 56 bytes */
1238 memset(p, 0, count - 8);
1239 }
1240 byteReverse(ctx->in, 14);
1241
1242 /* Append length in bits and transform */
1243 ((FcChar32 *) ctx->in)[14] = ctx->bits[0];
1244 ((FcChar32 *) ctx->in)[15] = ctx->bits[1];
1245
1246 MD5Transform(ctx->buf, (FcChar32 *) ctx->in);
1247 byteReverse((unsigned char *) ctx->buf, 4);
1248 memcpy(digest, ctx->buf, 16);
1249 memset(ctx, 0, sizeof(*ctx)); /* In case it's sensitive */
1250}
1251
1252
1253/* The four core functions - F1 is optimized somewhat */
1254
1255/* #define F1(x, y, z) (x & y | ~x & z) */
1256#define F1(x, y, z)(z ^ (x & (y ^ z))) (z ^ (x & (y ^ z)))
1257#define F2(x, y, z)(y ^ (z & (x ^ y))) F1(z, x, y)(y ^ (z & (x ^ y)))
1258#define F3(x, y, z)(x ^ y ^ z) (x ^ y ^ z)
1259#define F4(x, y, z)(y ^ (x | ~z)) (y ^ (x | ~z))
1260
1261/* This is the central step in the MD5 algorithm. */
1262#define MD5STEP(f, w, x, y, z, data, s)( w += f(x, y, z) + data, w = w<<s | w>>(32 -s), w
+= x ) \
1263 ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x )
1264
1265/*
1266 * The core of the MD5 algorithm, this alters an existing MD5 hash to
1267 * reflect the addition of 16 longwords of new data. MD5Update blocks
1268 * the data and converts bytes into longwords for this routine.
1269 */
1270static void MD5Transform(FcChar32 buf[4], FcChar32 in[16])
1271{
1272 register FcChar32 a, b, c, d;
1273
1274 a = buf[0];
1275 b = buf[1];
1276 c = buf[2];
1277 d = buf[3];
1278
1279 MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7)( a += (d ^ (b & (c ^ d))) + in[0] + 0xd76aa478, a = a<<
7 | a>>(32 -7), a += b );
1280 MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12)( d += (c ^ (a & (b ^ c))) + in[1] + 0xe8c7b756, d = d<<
12 | d>>(32 -12), d += a );
1281 MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17)( c += (b ^ (d & (a ^ b))) + in[2] + 0x242070db, c = c<<
17 | c>>(32 -17), c += d );
1282 MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22)( b += (a ^ (c & (d ^ a))) + in[3] + 0xc1bdceee, b = b<<
22 | b>>(32 -22), b += c );
1283 MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7)( a += (d ^ (b & (c ^ d))) + in[4] + 0xf57c0faf, a = a<<
7 | a>>(32 -7), a += b );
1284 MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12)( d += (c ^ (a & (b ^ c))) + in[5] + 0x4787c62a, d = d<<
12 | d>>(32 -12), d += a );
1285 MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17)( c += (b ^ (d & (a ^ b))) + in[6] + 0xa8304613, c = c<<
17 | c>>(32 -17), c += d );
1286 MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22)( b += (a ^ (c & (d ^ a))) + in[7] + 0xfd469501, b = b<<
22 | b>>(32 -22), b += c );
1287 MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7)( a += (d ^ (b & (c ^ d))) + in[8] + 0x698098d8, a = a<<
7 | a>>(32 -7), a += b );
1288 MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12)( d += (c ^ (a & (b ^ c))) + in[9] + 0x8b44f7af, d = d<<
12 | d>>(32 -12), d += a );
1289 MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17)( c += (b ^ (d & (a ^ b))) + in[10] + 0xffff5bb1, c = c<<
17 | c>>(32 -17), c += d );
1290 MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22)( b += (a ^ (c & (d ^ a))) + in[11] + 0x895cd7be, b = b<<
22 | b>>(32 -22), b += c );
1291 MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7)( a += (d ^ (b & (c ^ d))) + in[12] + 0x6b901122, a = a<<
7 | a>>(32 -7), a += b );
1292 MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12)( d += (c ^ (a & (b ^ c))) + in[13] + 0xfd987193, d = d<<
12 | d>>(32 -12), d += a );
1293 MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17)( c += (b ^ (d & (a ^ b))) + in[14] + 0xa679438e, c = c<<
17 | c>>(32 -17), c += d );
1294 MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22)( b += (a ^ (c & (d ^ a))) + in[15] + 0x49b40821, b = b<<
22 | b>>(32 -22), b += c );
1295
1296 MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5)( a += (c ^ (d & (b ^ c))) + in[1] + 0xf61e2562, a = a<<
5 | a>>(32 -5), a += b );
1297 MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9)( d += (b ^ (c & (a ^ b))) + in[6] + 0xc040b340, d = d<<
9 | d>>(32 -9), d += a );
1298 MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14)( c += (a ^ (b & (d ^ a))) + in[11] + 0x265e5a51, c = c<<
14 | c>>(32 -14), c += d );
1299 MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20)( b += (d ^ (a & (c ^ d))) + in[0] + 0xe9b6c7aa, b = b<<
20 | b>>(32 -20), b += c );
1300 MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5)( a += (c ^ (d & (b ^ c))) + in[5] + 0xd62f105d, a = a<<
5 | a>>(32 -5), a += b );
1301 MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9)( d += (b ^ (c & (a ^ b))) + in[10] + 0x02441453, d = d<<
9 | d>>(32 -9), d += a );
1302 MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14)( c += (a ^ (b & (d ^ a))) + in[15] + 0xd8a1e681, c = c<<
14 | c>>(32 -14), c += d );
1303 MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20)( b += (d ^ (a & (c ^ d))) + in[4] + 0xe7d3fbc8, b = b<<
20 | b>>(32 -20), b += c );
1304 MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5)( a += (c ^ (d & (b ^ c))) + in[9] + 0x21e1cde6, a = a<<
5 | a>>(32 -5), a += b );
1305 MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9)( d += (b ^ (c & (a ^ b))) + in[14] + 0xc33707d6, d = d<<
9 | d>>(32 -9), d += a );
1306 MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14)( c += (a ^ (b & (d ^ a))) + in[3] + 0xf4d50d87, c = c<<
14 | c>>(32 -14), c += d );
1307 MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20)( b += (d ^ (a & (c ^ d))) + in[8] + 0x455a14ed, b = b<<
20 | b>>(32 -20), b += c );
1308 MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5)( a += (c ^ (d & (b ^ c))) + in[13] + 0xa9e3e905, a = a<<
5 | a>>(32 -5), a += b );
1309 MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9)( d += (b ^ (c & (a ^ b))) + in[2] + 0xfcefa3f8, d = d<<
9 | d>>(32 -9), d += a );
1310 MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14)( c += (a ^ (b & (d ^ a))) + in[7] + 0x676f02d9, c = c<<
14 | c>>(32 -14), c += d );
1311 MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20)( b += (d ^ (a & (c ^ d))) + in[12] + 0x8d2a4c8a, b = b<<
20 | b>>(32 -20), b += c );
1312
1313 MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4)( a += (b ^ c ^ d) + in[5] + 0xfffa3942, a = a<<4 | a>>
(32 -4), a += b );
1314 MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11)( d += (a ^ b ^ c) + in[8] + 0x8771f681, d = d<<11 | d>>
(32 -11), d += a );
1315 MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16)( c += (d ^ a ^ b) + in[11] + 0x6d9d6122, c = c<<16 | c
>>(32 -16), c += d );
1316 MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23)( b += (c ^ d ^ a) + in[14] + 0xfde5380c, b = b<<23 | b
>>(32 -23), b += c );
1317 MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4)( a += (b ^ c ^ d) + in[1] + 0xa4beea44, a = a<<4 | a>>
(32 -4), a += b );
1318 MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11)( d += (a ^ b ^ c) + in[4] + 0x4bdecfa9, d = d<<11 | d>>
(32 -11), d += a );
1319 MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16)( c += (d ^ a ^ b) + in[7] + 0xf6bb4b60, c = c<<16 | c>>
(32 -16), c += d );
1320 MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23)( b += (c ^ d ^ a) + in[10] + 0xbebfbc70, b = b<<23 | b
>>(32 -23), b += c );
1321 MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4)( a += (b ^ c ^ d) + in[13] + 0x289b7ec6, a = a<<4 | a>>
(32 -4), a += b );
1322 MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11)( d += (a ^ b ^ c) + in[0] + 0xeaa127fa, d = d<<11 | d>>
(32 -11), d += a );
1323 MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16)( c += (d ^ a ^ b) + in[3] + 0xd4ef3085, c = c<<16 | c>>
(32 -16), c += d );
1324 MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23)( b += (c ^ d ^ a) + in[6] + 0x04881d05, b = b<<23 | b>>
(32 -23), b += c );
1325 MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4)( a += (b ^ c ^ d) + in[9] + 0xd9d4d039, a = a<<4 | a>>
(32 -4), a += b );
1326 MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11)( d += (a ^ b ^ c) + in[12] + 0xe6db99e5, d = d<<11 | d
>>(32 -11), d += a );
1327 MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16)( c += (d ^ a ^ b) + in[15] + 0x1fa27cf8, c = c<<16 | c
>>(32 -16), c += d );
1328 MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23)( b += (c ^ d ^ a) + in[2] + 0xc4ac5665, b = b<<23 | b>>
(32 -23), b += c );
1329
1330 MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6)( a += (c ^ (b | ~d)) + in[0] + 0xf4292244, a = a<<6 | a
>>(32 -6), a += b );
1331 MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10)( d += (b ^ (a | ~c)) + in[7] + 0x432aff97, d = d<<10 |
d>>(32 -10), d += a );
1332 MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15)( c += (a ^ (d | ~b)) + in[14] + 0xab9423a7, c = c<<15 |
c>>(32 -15), c += d );
1333 MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21)( b += (d ^ (c | ~a)) + in[5] + 0xfc93a039, b = b<<21 |
b>>(32 -21), b += c );
1334 MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6)( a += (c ^ (b | ~d)) + in[12] + 0x655b59c3, a = a<<6 |
a>>(32 -6), a += b );
1335 MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10)( d += (b ^ (a | ~c)) + in[3] + 0x8f0ccc92, d = d<<10 |
d>>(32 -10), d += a );
1336 MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15)( c += (a ^ (d | ~b)) + in[10] + 0xffeff47d, c = c<<15 |
c>>(32 -15), c += d );
1337 MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21)( b += (d ^ (c | ~a)) + in[1] + 0x85845dd1, b = b<<21 |
b>>(32 -21), b += c );
1338 MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6)( a += (c ^ (b | ~d)) + in[8] + 0x6fa87e4f, a = a<<6 | a
>>(32 -6), a += b );
1339 MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10)( d += (b ^ (a | ~c)) + in[15] + 0xfe2ce6e0, d = d<<10 |
d>>(32 -10), d += a );
1340 MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15)( c += (a ^ (d | ~b)) + in[6] + 0xa3014314, c = c<<15 |
c>>(32 -15), c += d );
1341 MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21)( b += (d ^ (c | ~a)) + in[13] + 0x4e0811a1, b = b<<21 |
b>>(32 -21), b += c );
1342 MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6)( a += (c ^ (b | ~d)) + in[4] + 0xf7537e82, a = a<<6 | a
>>(32 -6), a += b );
1343 MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10)( d += (b ^ (a | ~c)) + in[11] + 0xbd3af235, d = d<<10 |
d>>(32 -10), d += a );
1344 MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15)( c += (a ^ (d | ~b)) + in[2] + 0x2ad7d2bb, c = c<<15 |
c>>(32 -15), c += d );
1345 MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21)( b += (d ^ (c | ~a)) + in[9] + 0xeb86d391, b = b<<21 |
b>>(32 -21), b += c );
1346
1347 buf[0] += a;
1348 buf[1] += b;
1349 buf[2] += c;
1350 buf[3] += d;
1351}
1352
1353FcBool
1354FcDirCacheCreateTagFile (const FcChar8 *cache_dir)
1355{
1356 FcChar8 *cache_tag;
1357 int fd;
1358 FILE *fp;
1359 FcAtomic *atomic;
1360 static const FcChar8 cache_tag_contents[] =
1361 "Signature: 8a477f597d28d172789f06886806bc55\n"
1362 "# This file is a cache directory tag created by fontconfig.\n"
1363 "# For information about cache directory tags, see:\n"
1364 "# http://www.brynosaurus.com/cachedir/\n";
1365 static size_t cache_tag_contents_size = sizeof (cache_tag_contents) - 1;
1366 FcBool ret = FcFalse0;
1367
1368 if (!cache_dir)
1369 return FcFalse0;
1370
1371 if (access ((char *) cache_dir, W_OK2|X_OK1) == 0)
1372 {
1373 /* Create CACHEDIR.TAG */
1374 cache_tag = FcStrPlusIA__FcStrPlus (cache_dir, (const FcChar8 *) FC_DIR_SEPARATOR_S"/" "CACHEDIR.TAG");
1375 if (!cache_tag)
1376 return FcFalse0;
1377 atomic = FcAtomicCreateIA__FcAtomicCreate ((FcChar8 *)cache_tag);
1378 if (!atomic)
1379 goto bail1;
1380 if (!FcAtomicLockIA__FcAtomicLock (atomic))
1381 goto bail2;
1382 fd = open((char *)FcAtomicNewFileIA__FcAtomicNewFile (atomic), O_RDWR02 | O_CREAT0100, 0644);
1383 if (fd == -1)
1384 goto bail3;
1385 fp = fdopen(fd, "wb");
1386 if (fp == NULL((void*)0))
1387 goto bail3;
1388
1389 fwrite(cache_tag_contents, cache_tag_contents_size, sizeof (FcChar8), fp);
1390 fclose(fp);
1391
1392 if (!FcAtomicReplaceOrigIA__FcAtomicReplaceOrig(atomic))
1393 goto bail3;
1394
1395 ret = FcTrue1;
1396 bail3:
1397 FcAtomicUnlockIA__FcAtomicUnlock (atomic);
1398 bail2:
1399 FcAtomicDestroyIA__FcAtomicDestroy (atomic);
1400 bail1:
1401 FcStrFreeIA__FcStrFree (cache_tag);
1402 }
1403
1404 if (FcDebug ()(FcDebugVal) & FC_DBG_CACHE16)
1405 {
1406 if (ret)
1407 printf ("Created CACHEDIR.TAG at %s\n", cache_dir);
1408 else
1409 printf ("Unable to create CACHEDIR.TAG at %s\n", cache_dir);
1410 }
1411
1412 return ret;
1413}
1414
1415void
1416FcCacheCreateTagFile (const FcConfig *config)
1417{
1418 FcChar8 *cache_dir = NULL((void*)0);
1419 FcStrList *list;
1420
1421 list = FcConfigGetCacheDirsIA__FcConfigGetCacheDirs (config);
1422 if (!list)
1423 return;
1424
1425 while ((cache_dir = FcStrListNextIA__FcStrListNext (list)))
1426 {
1427 if (FcDirCacheCreateTagFile (cache_dir))
1428 break;
1429 }
1430 FcStrListDoneIA__FcStrListDone (list);
1431}
1432
1433#define __fccache__
1434#include "fcaliastail.h"
1435#undef __fccache__