2 * $RCSId: xc/lib/fontconfig/src/fccache.c,v 1.12 2002/08/22 07:36:44 keithp Exp $
4 * Copyright © 2000 Keith Packard
5 * Copyright © 2005 Patrick Lam
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.
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.
30 #include <sys/utsname.h>
31 #include <sys/types.h>
36 #define ENDIAN_TEST 0x12345678
37 #define MACHINE_SIGNATURE_SIZE 9 + 5*20 + 1
40 FcDirCacheOpen (char * cache_file);
43 FcDirCacheHashName (char * cache_file, int collisions);
46 FcCacheSkipToArch (int fd, const char * arch);
49 FcCacheCopyOld (int fd, int fd_orig, off_t start);
52 FcDirCacheProduce (FcFontSet *set, FcCache * metadata);
55 FcDirCacheConsume (int fd, const char * dir, FcFontSet *set);
58 FcDirCacheRead (FcFontSet * set, FcStrSet * dirs, const FcChar8 *dir);
61 FcCacheNextOffset(off_t w);
64 FcCacheMachineSignature (void);
67 FcCacheHaveBank (int bank);
70 FcCacheAddBankDir (int bank, const char * dir);
78 static void MD5Init(struct MD5Context *ctx);
79 static void MD5Update(struct MD5Context *ctx, unsigned char *buf, unsigned len);
80 static void MD5Final(unsigned char digest[16], struct MD5Context *ctx);
81 static void MD5Transform(FcChar32 buf[4], FcChar32 in[16]);
83 #define FC_DBG_CACHE_REF 1024
86 FcCacheReadString (int fd, char *dest, int len)
99 while (read (fd, &c, 1) == 1)
126 FcCacheSkipString (int fd)
132 while (read (fd, &c, 1) == 1)
153 FcCacheWriteString (int fd, const char *chars)
155 if (write (fd, chars, strlen(chars)+1) != strlen(chars)+1)
161 FcGlobalCacheDirDestroy (FcGlobalCacheDir *d)
163 FcMemFree (FC_MEM_STRING, strlen (d->name)+1);
165 FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCacheDir));
170 FcGlobalCacheCreate (void)
172 FcGlobalCache *cache;
174 cache = malloc (sizeof (FcGlobalCache));
177 FcMemAlloc (FC_MEM_CACHE, sizeof (FcGlobalCache));
179 cache->updated = FcFalse;
185 FcGlobalCacheDestroy (FcGlobalCache *cache)
187 FcGlobalCacheDir *d, *next;
189 for (d = cache->dirs; d; d = next)
192 FcGlobalCacheDirDestroy (d);
194 FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCache));
199 FcGlobalCacheLoad (FcGlobalCache *cache,
201 const FcChar8 *cache_file,
204 char name_buf[FC_MAX_FILE_LEN];
205 FcGlobalCacheDir *d, *next;
206 FcFileTime config_time = FcConfigModifiedTime (config);
207 char * current_arch_machine_name;
208 char candidate_arch_machine_name[MACHINE_SIGNATURE_SIZE + 9];
209 off_t current_arch_start;
211 struct stat cache_stat, dir_stat;
213 if (stat ((char *) cache_file, &cache_stat) < 0)
216 cache->fd = open ((char *) cache_file, O_RDONLY);
220 cache->updated = FcFalse;
222 FcCacheReadString (cache->fd, name_buf, sizeof (name_buf));
223 if (strcmp (name_buf, FC_GLOBAL_MAGIC_COOKIE) != 0)
226 current_arch_machine_name = FcCacheMachineSignature ();
227 current_arch_start = FcCacheSkipToArch(cache->fd,
228 current_arch_machine_name);
229 if (current_arch_start < 0)
230 goto bail_and_destroy;
232 lseek (cache->fd, current_arch_start, SEEK_SET);
233 FcCacheReadString (cache->fd, candidate_arch_machine_name,
234 sizeof (candidate_arch_machine_name));
235 if (strlen(candidate_arch_machine_name) == 0)
236 goto bail_and_destroy;
242 FcCacheReadString (cache->fd, name_buf, sizeof (name_buf));
243 if (!strlen(name_buf))
246 /* Directory must be older than the global cache file; also
247 cache must be newer than the config file. */
248 if (stat ((char *) name_buf, &dir_stat) < 0 ||
249 dir_stat.st_mtime > cache_stat.st_mtime ||
250 (config_time.set && cache_stat.st_mtime < config_time.time))
254 FcStrSetAdd (staleDirs, FcStrCopy ((FcChar8 *)name_buf));
255 read (cache->fd, &md, sizeof (FcCache));
256 lseek (cache->fd, FcCacheNextOffset (lseek(cache->fd, 0, SEEK_CUR)) + md.count, SEEK_SET);
260 d = malloc (sizeof (FcGlobalCacheDir));
264 d->next = cache->dirs;
267 d->name = (char *)FcStrCopy ((FcChar8 *)name_buf);
269 d->offset = lseek (cache->fd, 0, SEEK_CUR);
270 if (read (cache->fd, &d->metadata, sizeof (FcCache)) != sizeof (FcCache))
272 targ = FcCacheNextOffset (lseek(cache->fd, 0, SEEK_CUR)) + d->metadata.count;
273 if (lseek (cache->fd, targ, SEEK_SET) != targ)
279 for (d = cache->dirs; d; d = next)
294 if (stat ((char *) cache_file, &cache_stat) == 0)
295 unlink ((char *)cache_file);
302 FcGlobalCacheReadDir (FcFontSet *set, FcStrSet *dirs, FcGlobalCache * cache, const char *dir, FcConfig *config)
305 FcBool ret = FcFalse;
310 for (d = cache->dirs; d; d = d->next)
312 if (strncmp (d->name, dir, strlen(dir)) == 0)
314 lseek (cache->fd, d->offset, SEEK_SET);
315 if (!FcDirCacheConsume (cache->fd, dir, set))
317 if (strcmp (d->name, dir) == 0)
326 FcGlobalCacheUpdate (FcGlobalCache *cache,
330 FcGlobalCacheDir * d;
332 for (d = cache->dirs; d; d = d->next)
334 if (strcmp(d->name, name) == 0)
340 d = malloc (sizeof (FcGlobalCacheDir));
343 d->next = cache->dirs;
347 cache->updated = FcTrue;
349 d->name = (char *)FcStrCopy ((FcChar8 *)name);
350 d->ent = FcDirCacheProduce (set, &d->metadata);
356 FcGlobalCacheSave (FcGlobalCache *cache,
357 const FcChar8 *cache_file)
360 FcGlobalCacheDir *dir;
362 off_t current_arch_start = 0, truncate_to;
363 char * current_arch_machine_name, * header;
368 #if defined (HAVE_GETUID) && defined (HAVE_GETEUID)
369 /* Set-UID programs can't safely update the cache */
370 if (getuid () != geteuid ())
374 atomic = FcAtomicCreate (cache_file);
378 if (!FcAtomicLock (atomic))
380 fd = open ((char *) FcAtomicNewFile(atomic), O_RDWR | O_CREAT,
385 fd_orig = open ((char *) FcAtomicOrigFile(atomic), O_RDONLY);
387 current_arch_machine_name = FcCacheMachineSignature ();
389 current_arch_start = 0;
391 current_arch_start = FcCacheSkipToArch (fd_orig,
392 current_arch_machine_name);
394 if (current_arch_start < 0)
395 current_arch_start = FcCacheNextOffset (lseek(fd_orig, 0, SEEK_END));
397 if (!FcCacheCopyOld(fd, fd_orig, current_arch_start))
403 current_arch_start = lseek(fd, 0, SEEK_CUR);
404 if (ftruncate (fd, current_arch_start) == -1)
407 header = malloc (10 + strlen (current_arch_machine_name));
411 truncate_to = current_arch_start + strlen(current_arch_machine_name) + 11;
412 for (dir = cache->dirs; dir; dir = dir->next)
414 truncate_to += strlen(dir->name) + 1;
415 truncate_to += sizeof (FcCache);
416 truncate_to = FcCacheNextOffset (truncate_to);
417 truncate_to += dir->metadata.count;
419 truncate_to -= current_arch_start;
421 FcCacheWriteString (fd, FC_GLOBAL_MAGIC_COOKIE);
422 sprintf (header, "%8x ", (int)truncate_to);
423 strcat (header, current_arch_machine_name);
424 if (!FcCacheWriteString (fd, header))
427 for (dir = cache->dirs; dir; dir = dir->next)
431 FcCacheWriteString (fd, dir->name);
432 write (fd, &dir->metadata, sizeof(FcCache));
433 lseek (fd, FcCacheNextOffset (lseek(fd, 0, SEEK_CUR)), SEEK_SET);
434 write (fd, dir->ent, dir->metadata.count);
438 FcCacheWriteString (fd, "");
440 if (close (fd) == -1)
443 if (!FcAtomicReplaceOrig (atomic))
446 FcAtomicUnlock (atomic);
447 FcAtomicDestroy (atomic);
449 cache->updated = FcFalse;
460 FcAtomicDeleteNew (atomic);
462 FcAtomicUnlock (atomic);
464 FcAtomicDestroy (atomic);
469 * Find the next presumably-mmapable offset after the supplied file
473 FcCacheNextOffset(off_t w)
475 static long pagesize = -1;
477 pagesize = sysconf(_SC_PAGESIZE);
478 if (w % pagesize == 0)
481 return ((w / pagesize)+1)*pagesize;
484 /* return the address of the segment for the provided arch,
485 * or -1 if arch not found */
487 FcCacheSkipToArch (int fd, const char * arch)
489 char candidate_arch_machine_name_count[MACHINE_SIGNATURE_SIZE + 9];
490 char * candidate_arch;
491 off_t current_arch_start = 0;
493 lseek (fd, 0, SEEK_SET);
494 FcCacheSkipString (fd);
495 current_arch_start = lseek (fd, 0, SEEK_CUR);
497 /* skip arches that are not the current arch */
502 if (lseek (fd, current_arch_start, SEEK_SET) != current_arch_start)
505 if (FcCacheReadString (fd, candidate_arch_machine_name_count,
506 sizeof (candidate_arch_machine_name_count)) == 0)
508 if (!strlen(candidate_arch_machine_name_count))
510 bs = strtol(candidate_arch_machine_name_count, &candidate_arch, 16);
512 // count = 0 should probably be distinguished from the !bs condition
513 if (!bs || bs < strlen (candidate_arch_machine_name_count))
516 candidate_arch++; /* skip leading space */
518 if (strcmp (candidate_arch, arch)==0)
519 return current_arch_start;
520 current_arch_start += bs;
526 /* Cuts out the segment at the file pointer (moves everything else
527 * down to cover it), and leaves the file pointer at the end of the
530 FcCacheCopyOld (int fd, int fd_orig, off_t start)
532 char * buf = malloc (8192);
533 char candidate_arch_machine_name[MACHINE_SIGNATURE_SIZE + 9];
535 int c, bytes_skipped;
542 lseek (fd, 0, SEEK_SET); lseek (fd_orig, 0, SEEK_SET);
549 if ((c = read (fd_orig, buf, b)) <= 0)
551 if (write (fd, buf, c) < 0)
558 lseek (fd, start, SEEK_SET);
559 if (FcCacheReadString (fd, candidate_arch_machine_name,
560 sizeof (candidate_arch_machine_name)) == 0)
562 if (!strlen(candidate_arch_machine_name))
565 bs = strtol(candidate_arch_machine_name, 0, 16);
572 lseek (fd, start+bs+bytes_skipped, SEEK_SET);
573 if ((c = read (fd, buf, 8192)) <= 0)
575 lseek (fd, start+bytes_skipped, SEEK_SET);
576 if (write (fd, buf, c) < 0)
581 lseek (fd, start+bytes_skipped, SEEK_SET);
592 /* Does not check that the cache has the appropriate arch section. */
593 /* Also, this can be fooled if the original location has a stale
594 * cache, and the hashed location has an up-to-date cache. Oh well,
595 * sucks to be you in that case! */
597 FcDirCacheValid (const FcChar8 *dir)
600 struct stat file_stat, dir_stat;
603 if (stat ((char *) dir, &dir_stat) < 0)
606 cache_file = FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
610 fd = FcDirCacheOpen ((char *)cache_file);
614 if (fstat (fd, &file_stat) < 0)
618 FcStrFree (cache_file);
621 * If the directory has been modified more recently than
622 * the cache file, the cache is not valid
624 if (dir_stat.st_mtime > file_stat.st_mtime)
632 FcStrFree (cache_file);
636 /* Assumes that the cache file in 'dir' exists.
637 * Checks that the cache has the appropriate arch section. */
639 FcDirCacheHasCurrentArch (const FcChar8 *dir)
643 off_t current_arch_start;
644 char *current_arch_machine_name;
646 cache_file = (char *)FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
650 fd = FcDirCacheOpen (cache_file);
654 current_arch_machine_name = FcCacheMachineSignature();
655 current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name);
658 if (current_arch_start < 0)
669 FcDirCacheUnlink (const FcChar8 *dir)
671 char *cache_file = (char *)FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
674 struct stat cache_stat;
675 char name_buf[FC_MAX_FILE_LEN];
677 /* First remove normal cache file. */
678 if (stat ((char *) cache_file, &cache_stat) == 0 &&
679 unlink ((char *)cache_file) != 0)
682 /* Next remove any applicable hashed files. */
683 fd = -1; collisions = 0;
686 cache_hashed = FcDirCacheHashName (cache_file, collisions++);
692 fd = open(cache_hashed, O_RDONLY);
695 FcStrFree ((FcChar8 *)cache_file);
699 FcCacheReadString (fd, name_buf, sizeof (name_buf));
700 if (!strlen(name_buf))
702 } while (strcmp (name_buf, cache_file) != 0);
704 FcStrFree ((FcChar8 *)cache_file);
707 if (stat ((char *) cache_hashed, &cache_stat) == 0 &&
708 unlink ((char *)cache_hashed) != 0)
710 FcStrFree ((FcChar8 *)cache_hashed);
714 FcStrFree ((FcChar8 *)cache_hashed);
718 FcStrFree ((FcChar8 *)cache_file);
723 FcCacheReadDirs (FcConfig * config, FcGlobalCache * cache,
724 FcStrList *list, FcFontSet * set)
728 FcChar8 *file, *base;
734 * Read in the results from 'list'.
736 while ((dir = FcStrListNext (list)))
738 if (!FcConfigAcceptFilename (config, dir))
742 file = (FcChar8 *) malloc (strlen ((char *) dir) + 1 + FC_MAX_FILE_LEN + 1);
746 strcpy ((char *) file, (char *) dir);
747 strcat ((char *) file, "/");
748 base = file + strlen ((char *) file);
750 subdirs = FcStrSetCreate ();
753 fprintf (stderr, "Can't create directory set\n");
759 if (access ((char *) dir, X_OK) < 0)
767 fprintf (stderr, "\"%s\": ", dir);
771 FcStrSetDestroy (subdirs);
775 if (stat ((char *) dir, &statb) == -1)
777 fprintf (stderr, "\"%s\": ", dir);
779 FcStrSetDestroy (subdirs);
784 if (!S_ISDIR (statb.st_mode))
786 fprintf (stderr, "\"%s\": not a directory, skipping\n", dir);
787 FcStrSetDestroy (subdirs);
791 if (!FcDirCacheValid (dir) || !FcDirCacheRead (set, subdirs, dir))
793 if (FcDebug () & FC_DBG_FONTSET)
794 printf ("cache scan dir %s\n", dir);
796 FcDirScanConfig (set, subdirs, cache,
797 config->blanks, dir, FcFalse, config);
799 sublist = FcStrListCreate (subdirs);
800 FcStrSetDestroy (subdirs);
803 fprintf (stderr, "Can't create subdir list in \"%s\"\n", dir);
808 ret += FcCacheReadDirs (config, cache, sublist, set);
811 FcStrListDone (list);
816 FcCacheRead (FcConfig *config, FcGlobalCache * cache)
818 FcFontSet * s = FcFontSetCreate();
822 if (FcCacheReadDirs (config, cache, FcConfigGetConfigDirs (config), s))
828 FcFontSetDestroy (s);
832 static const char bin2hex[] = { '0', '1', '2', '3',
835 'c', 'd', 'e', 'f' };
838 FcDirCacheHashName (char * cache_file, int collisions)
840 unsigned char hash[16], hex_hash[33];
842 unsigned char uscore = '_';
845 struct MD5Context ctx;
848 MD5Update (&ctx, (unsigned char *)cache_file, strlen (cache_file));
850 for (i = 0; i < collisions; i++)
851 MD5Update (&ctx, &uscore, 1);
853 MD5Final (hash, &ctx);
855 for (cnt = 0; cnt < 16; ++cnt)
857 hex_hash[2*cnt] = bin2hex[hash[cnt] >> 4];
858 hex_hash[2*cnt+1] = bin2hex[hash[cnt] & 0xf];
862 tmp = FcStrPlus ((FcChar8 *)hex_hash, (FcChar8 *)FC_CACHE_SUFFIX);
866 cache_hashed = (char *)FcStrPlus ((FcChar8 *)PKGCACHEDIR"/", tmp);
872 /* Opens the hashed name for cache_file.
873 * This would fail in the unlikely event of a collision and subsequent
874 * removal of the file which originally caused the collision. */
876 FcDirCacheOpen (char *cache_file)
878 int fd = -1, collisions = 0;
880 char name_buf[FC_MAX_FILE_LEN];
882 fd = open(cache_file, O_RDONLY);
888 cache_hashed = FcDirCacheHashName (cache_file, collisions++);
894 fd = open(cache_hashed, O_RDONLY);
895 FcStrFree ((FcChar8 *)cache_hashed);
899 FcCacheReadString (fd, name_buf, sizeof (name_buf));
900 if (!strlen(name_buf))
902 } while (strcmp (name_buf, cache_file) != 0);
910 /* read serialized state from the cache file */
912 FcDirCacheRead (FcFontSet * set, FcStrSet * dirs, const FcChar8 *dir)
916 char *current_arch_machine_name;
917 char candidate_arch_machine_name[9+MACHINE_SIGNATURE_SIZE];
918 off_t current_arch_start = 0;
919 char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1];
921 cache_file = (char *)FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
925 fd = FcDirCacheOpen (cache_file);
929 current_arch_machine_name = FcCacheMachineSignature();
930 current_arch_start = FcCacheSkipToArch(fd,
931 current_arch_machine_name);
932 if (current_arch_start < 0)
935 lseek (fd, current_arch_start, SEEK_SET);
936 if (FcCacheReadString (fd, candidate_arch_machine_name,
937 sizeof (candidate_arch_machine_name)) == 0)
940 while (strlen(FcCacheReadString (fd, subdirName, sizeof (subdirName))) > 0)
941 FcStrSetAdd (dirs, (FcChar8 *)subdirName);
943 if (!FcDirCacheConsume (fd, (const char *)dir, set))
958 FcDirCacheConsume (int fd, const char * dir, FcFontSet *set)
961 void * current_dir_block;
964 read(fd, &metadata, sizeof(FcCache));
965 if (metadata.magic != FC_CACHE_MAGIC)
970 pos = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR));
971 lseek (fd, pos, SEEK_SET);
975 pos = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR));
976 current_dir_block = mmap (0, metadata.count,
977 PROT_READ, MAP_SHARED, fd, pos);
978 lseek (fd, pos+metadata.count, SEEK_SET);
979 if (current_dir_block == MAP_FAILED)
982 FcCacheAddBankDir (metadata.bank, dir);
984 if (!FcFontSetUnserialize (&metadata, set, current_dir_block))
991 FcDirCacheProduce (FcFontSet *set, FcCache *metadata)
993 void * current_dir_block, * final_dir_block;
994 static unsigned int rand_state = 0;
995 int bank, needed_bytes_no_align;
998 rand_state = time(0L);
999 bank = rand_r(&rand_state);
1001 while (FcCacheHaveBank(bank))
1002 bank = rand_r(&rand_state);
1004 memset (metadata, 0, sizeof(FcCache));
1006 needed_bytes_no_align = FcFontSetNeededBytes (set);
1007 metadata->count = needed_bytes_no_align +
1008 FcFontSetNeededBytesAlign ();
1009 metadata->magic = FC_CACHE_MAGIC;
1010 metadata->bank = bank;
1012 if (!needed_bytes_no_align) /* not a failure, no fonts to write */
1014 /* no, you don't really need to write any bytes at all. */
1015 metadata->count = 0;
1019 current_dir_block = malloc (metadata->count);
1020 if (!current_dir_block)
1023 memset (current_dir_block, 0, metadata->count);
1024 final_dir_block = FcFontSetDistributeBytes (metadata, current_dir_block);
1026 if ((void *)((char *)current_dir_block+metadata->count) < final_dir_block)
1029 if (!FcFontSetSerialize (bank, set))
1032 return current_dir_block;
1035 free (current_dir_block);
1039 /* write serialized state to the cache file */
1041 FcDirCacheWrite (FcFontSet *set, FcStrSet *dirs, const FcChar8 *dir)
1045 int fd, fd_orig, i, dirs_count;
1048 off_t current_arch_start = 0, truncate_to;
1049 char name_buf[FC_MAX_FILE_LEN];
1052 char *current_arch_machine_name, * header;
1053 void *current_dir_block = 0;
1055 cache_file = (char *)FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
1059 /* Ensure that we're not trampling a cache for some other dir. */
1060 /* This is slightly different from FcDirCacheOpen, since it
1061 * needs the filename, not the file descriptor. */
1062 fd = -1; collisions = 0;
1065 cache_hashed = FcDirCacheHashName (cache_file, collisions++);
1071 fd = open(cache_hashed, O_RDONLY);
1074 FcCacheReadString (fd, name_buf, sizeof (name_buf));
1077 if (!strlen(name_buf))
1080 if (strcmp (name_buf, cache_file) != 0)
1084 current_dir_block = FcDirCacheProduce (set, &metadata);
1086 if (metadata.count && !current_dir_block)
1089 if (FcDebug () & FC_DBG_CACHE)
1090 printf ("FcDirCacheWriteDir cache_file \"%s\"\n", cache_file);
1092 atomic = FcAtomicCreate ((FcChar8 *)cache_hashed);
1096 if (!FcAtomicLock (atomic))
1098 /* Now try rewriting the original version of the file. */
1099 FcAtomicDestroy (atomic);
1101 atomic = FcAtomicCreate ((FcChar8 *)cache_file);
1102 fd_orig = open (cache_file, O_RDONLY);
1104 fd_orig = open((char *)FcAtomicOrigFile (atomic), O_RDONLY);
1106 fd = open((char *)FcAtomicNewFile (atomic), O_RDWR | O_CREAT, 0666);
1111 /* In all cases, try opening the real location of the cache file first. */
1112 /* (even if that's not atomic.) */
1113 fd_orig = open (cache_file, O_RDONLY);
1115 fd_orig = open((char *)FcAtomicOrigFile (atomic), O_RDONLY);
1117 fd = open((char *)FcAtomicNewFile (atomic), O_RDWR | O_CREAT, 0666);
1121 FcCacheWriteString (fd, cache_file);
1123 current_arch_machine_name = FcCacheMachineSignature ();
1124 current_arch_start = 0;
1127 current_arch_start =
1128 FcCacheSkipToArch(fd_orig, current_arch_machine_name);
1130 if (current_arch_start < 0)
1131 current_arch_start = FcCacheNextOffset (lseek(fd_orig, 0, SEEK_END));
1133 if (fd_orig != -1 && !FcCacheCopyOld(fd, fd_orig, current_arch_start))
1139 current_arch_start = lseek(fd, 0, SEEK_CUR);
1140 if (ftruncate (fd, current_arch_start) == -1)
1143 /* allocate space for subdir names in this block */
1145 for (i = 0; i < dirs->size; i++)
1146 dirs_count += strlen((char *)dirs->strs[i]) + 1;
1149 /* now write the address of the next offset */
1150 truncate_to = FcCacheNextOffset (FcCacheNextOffset (current_arch_start + sizeof (FcCache) + dirs_count) + metadata.count) - current_arch_start;
1151 header = malloc (10 + strlen (current_arch_machine_name));
1154 sprintf (header, "%8x ", (int)truncate_to);
1155 strcat (header, current_arch_machine_name);
1156 if (!FcCacheWriteString (fd, header))
1159 for (i = 0; i < dirs->size; i++)
1160 FcCacheWriteString (fd, (char *)dirs->strs[i]);
1161 FcCacheWriteString (fd, "");
1163 write (fd, &metadata, sizeof(FcCache));
1166 lseek (fd, FcCacheNextOffset (lseek(fd, 0, SEEK_END)), SEEK_SET);
1167 write (fd, current_dir_block, metadata.count);
1168 free (current_dir_block);
1171 /* this actually serves to pad out the cache file, if needed */
1172 if (ftruncate (fd, current_arch_start + truncate_to) == -1)
1176 if (!FcAtomicReplaceOrig(atomic))
1178 FcStrFree ((FcChar8 *)cache_hashed);
1179 FcAtomicUnlock (atomic);
1180 FcAtomicDestroy (atomic);
1188 FcAtomicUnlock (atomic);
1190 FcAtomicDestroy (atomic);
1192 FcStrFree ((FcChar8 *)cache_hashed);
1194 unlink ((char *)cache_file);
1196 if (current_dir_block)
1197 free (current_dir_block);
1203 FcCacheMachineSignature ()
1205 static char buf[MACHINE_SIGNATURE_SIZE];
1206 int32_t magic = ENDIAN_TEST;
1207 char * m = (char *)&magic;
1209 sprintf (buf, "%2x%2x%2x%2x "
1210 "%4x %4x %4x %4x %4x %4x %4x %4x %4x %4x %4x %4x "
1211 "%4x %4x %4x %4x %4x %4x %4x %4x\n",
1212 m[0], m[1], m[2], m[3],
1213 (unsigned int)sizeof (char),
1214 (unsigned int)sizeof (char *),
1215 (unsigned int)sizeof (int),
1216 (unsigned int)sizeof (FcPattern),
1217 (unsigned int)sizeof (FcPatternEltPtr),
1218 (unsigned int)sizeof (struct _FcPatternElt *),
1219 (unsigned int)sizeof (FcPatternElt),
1220 (unsigned int)sizeof (FcObjectPtr),
1221 (unsigned int)sizeof (FcValueListPtr),
1222 (unsigned int)sizeof (FcValue),
1223 (unsigned int)sizeof (FcValueBinding),
1224 (unsigned int)sizeof (struct _FcValueList *),
1225 (unsigned int)sizeof (FcCharSet),
1226 (unsigned int)sizeof (FcCharLeaf **),
1227 (unsigned int)sizeof (FcChar16 *),
1228 (unsigned int)sizeof (FcChar16),
1229 (unsigned int)sizeof (FcCharLeaf),
1230 (unsigned int)sizeof (FcChar32),
1231 (unsigned int)sizeof (FcCache),
1232 (unsigned int)sysconf(_SC_PAGESIZE));
1237 static int banks_ptr = 0, banks_alloc = 0;
1238 int * _fcBankId = 0, * _fcBankIdx = 0;
1239 static const char ** bankDirs = 0;
1242 FcCacheHaveBank (int bank)
1246 if (bank < FC_BANK_FIRST)
1249 for (i = 0; i < banks_ptr; i++)
1250 if (_fcBankId[i] == bank)
1257 FcCacheBankToIndexMTF (int bank)
1261 for (i = 0; i < banks_ptr; i++)
1262 if (_fcBankId[_fcBankIdx[i]] == bank)
1264 int t = _fcBankIdx[i];
1266 for (j = i; j > 0; j--)
1267 _fcBankIdx[j] = _fcBankIdx[j-1];
1272 if (banks_ptr >= banks_alloc)
1277 b = realloc (_fcBankId, (banks_alloc + 4) * sizeof(int));
1282 bidx = realloc (_fcBankIdx, (banks_alloc + 4) * sizeof(int));
1287 bds = realloc (bankDirs, (banks_alloc + 4) * sizeof (char *));
1296 _fcBankId[i] = bank;
1302 FcCacheAddBankDir (int bank, const char * dir)
1304 int bi = FcCacheBankToIndexMTF (bank);
1309 bankDirs[bi] = (const char *)FcStrCopy ((FcChar8 *)dir);
1313 FcCacheFindBankDir (int bank)
1315 int bi = FcCacheBankToIndex (bank);
1316 return bankDirs[bi];
1320 * This code implements the MD5 message-digest algorithm.
1321 * The algorithm is due to Ron Rivest. This code was
1322 * written by Colin Plumb in 1993, no copyright is claimed.
1323 * This code is in the public domain; do with it what you wish.
1325 * Equivalent code is available from RSA Data Security, Inc.
1326 * This code has been tested against that, and is equivalent,
1327 * except that you don't need to include two pages of legalese
1330 * To compute the message digest of a chunk of bytes, declare an
1331 * MD5Context structure, pass it to MD5Init, call MD5Update as
1332 * needed on buffers full of bytes, and then call MD5Final, which
1333 * will fill a supplied 16-byte array with the digest.
1337 #define byteReverse(buf, len) /* Nothing */
1340 * Note: this code is harmless on little-endian machines.
1342 void byteReverse(unsigned char *buf, unsigned longs)
1346 t = (FcChar32) ((unsigned) buf[3] << 8 | buf[2]) << 16 |
1347 ((unsigned) buf[1] << 8 | buf[0]);
1348 *(FcChar32 *) buf = t;
1355 * Start MD5 accumulation. Set bit count to 0 and buffer to mysterious
1356 * initialization constants.
1358 static void MD5Init(struct MD5Context *ctx)
1360 ctx->buf[0] = 0x67452301;
1361 ctx->buf[1] = 0xefcdab89;
1362 ctx->buf[2] = 0x98badcfe;
1363 ctx->buf[3] = 0x10325476;
1370 * Update context to reflect the concatenation of another buffer full
1373 static void MD5Update(struct MD5Context *ctx, unsigned char *buf, unsigned len)
1377 /* Update bitcount */
1380 if ((ctx->bits[0] = t + ((FcChar32) len << 3)) < t)
1381 ctx->bits[1]++; /* Carry from low to high */
1382 ctx->bits[1] += len >> 29;
1384 t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data */
1386 /* Handle any leading odd-sized chunks */
1389 unsigned char *p = (unsigned char *) ctx->in + t;
1393 memcpy(p, buf, len);
1397 byteReverse(ctx->in, 16);
1398 MD5Transform(ctx->buf, (FcChar32 *) ctx->in);
1402 /* Process data in 64-byte chunks */
1405 memcpy(ctx->in, buf, 64);
1406 byteReverse(ctx->in, 16);
1407 MD5Transform(ctx->buf, (FcChar32 *) ctx->in);
1412 /* Handle any remaining bytes of data. */
1414 memcpy(ctx->in, buf, len);
1418 * Final wrapup - pad to 64-byte boundary with the bit pattern
1419 * 1 0* (64-bit count of bits processed, MSB-first)
1421 static void MD5Final(unsigned char digest[16], struct MD5Context *ctx)
1426 /* Compute number of bytes mod 64 */
1427 count = (ctx->bits[0] >> 3) & 0x3F;
1429 /* Set the first char of padding to 0x80. This is safe since there is
1430 always at least one byte free */
1431 p = ctx->in + count;
1434 /* Bytes of padding needed to make 64 bytes */
1435 count = 64 - 1 - count;
1437 /* Pad out to 56 mod 64 */
1439 /* Two lots of padding: Pad the first block to 64 bytes */
1440 memset(p, 0, count);
1441 byteReverse(ctx->in, 16);
1442 MD5Transform(ctx->buf, (FcChar32 *) ctx->in);
1444 /* Now fill the next block with 56 bytes */
1445 memset(ctx->in, 0, 56);
1447 /* Pad block to 56 bytes */
1448 memset(p, 0, count - 8);
1450 byteReverse(ctx->in, 14);
1452 /* Append length in bits and transform */
1453 ((FcChar32 *) ctx->in)[14] = ctx->bits[0];
1454 ((FcChar32 *) ctx->in)[15] = ctx->bits[1];
1456 MD5Transform(ctx->buf, (FcChar32 *) ctx->in);
1457 byteReverse((unsigned char *) ctx->buf, 4);
1458 memcpy(digest, ctx->buf, 16);
1459 memset(ctx, 0, sizeof(ctx)); /* In case it's sensitive */
1463 /* The four core functions - F1 is optimized somewhat */
1465 /* #define F1(x, y, z) (x & y | ~x & z) */
1466 #define F1(x, y, z) (z ^ (x & (y ^ z)))
1467 #define F2(x, y, z) F1(z, x, y)
1468 #define F3(x, y, z) (x ^ y ^ z)
1469 #define F4(x, y, z) (y ^ (x | ~z))
1471 /* This is the central step in the MD5 algorithm. */
1472 #define MD5STEP(f, w, x, y, z, data, s) \
1473 ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x )
1476 * The core of the MD5 algorithm, this alters an existing MD5 hash to
1477 * reflect the addition of 16 longwords of new data. MD5Update blocks
1478 * the data and converts bytes into longwords for this routine.
1480 static void MD5Transform(FcChar32 buf[4], FcChar32 in[16])
1482 register FcChar32 a, b, c, d;
1489 MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
1490 MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
1491 MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
1492 MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
1493 MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
1494 MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
1495 MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
1496 MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
1497 MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
1498 MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
1499 MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
1500 MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
1501 MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
1502 MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
1503 MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
1504 MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);
1506 MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);
1507 MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);
1508 MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
1509 MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
1510 MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);
1511 MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
1512 MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
1513 MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
1514 MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
1515 MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
1516 MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
1517 MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);
1518 MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
1519 MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
1520 MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);
1521 MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
1523 MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);
1524 MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);
1525 MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
1526 MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
1527 MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);
1528 MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
1529 MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
1530 MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
1531 MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
1532 MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
1533 MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
1534 MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);
1535 MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
1536 MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
1537 MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
1538 MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
1540 MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);
1541 MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);
1542 MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
1543 MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);
1544 MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
1545 MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
1546 MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
1547 MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
1548 MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
1549 MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
1550 MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
1551 MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
1552 MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
1553 MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
1554 MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
1555 MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);