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 (const FcChar8 * dir);
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, FcConfig *config);
58 FcCacheNextOffset(off_t w);
61 FcCacheMachineSignature (void);
64 FcCacheHaveBank (int bank);
67 FcCacheAddBankDir (int bank, const char * dir);
75 static void MD5Init(struct MD5Context *ctx);
76 static void MD5Update(struct MD5Context *ctx, unsigned char *buf, unsigned len);
77 static void MD5Final(unsigned char digest[16], struct MD5Context *ctx);
78 static void MD5Transform(FcChar32 buf[4], FcChar32 in[16]);
80 #define FC_DBG_CACHE_REF 1024
83 FcCacheReadString (int fd, char *dest, int len)
96 while (read (fd, &c, 1) == 1)
123 FcCacheSkipString (int fd)
129 while (read (fd, &c, 1) == 1)
150 FcCacheWriteString (int fd, const char *chars)
152 if (write (fd, chars, strlen(chars)+1) != strlen(chars)+1)
158 FcGlobalCacheDirDestroy (FcGlobalCacheDir *d)
160 FcMemFree (FC_MEM_STRING, strlen (d->name)+1);
162 FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCacheDir));
167 FcGlobalCacheCreate (void)
169 FcGlobalCache *cache;
171 cache = malloc (sizeof (FcGlobalCache));
174 FcMemAlloc (FC_MEM_CACHE, sizeof (FcGlobalCache));
176 cache->updated = FcFalse;
182 FcGlobalCacheDestroy (FcGlobalCache *cache)
184 FcGlobalCacheDir *d, *next;
186 for (d = cache->dirs; d; d = next)
189 FcGlobalCacheDirDestroy (d);
191 FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCache));
196 FcGlobalCacheLoad (FcGlobalCache *cache,
198 const FcChar8 *cache_file,
201 char name_buf[FC_MAX_FILE_LEN];
202 FcGlobalCacheDir *d, *next;
203 FcFileTime config_time = FcConfigModifiedTime (config);
204 char * current_arch_machine_name;
205 char candidate_arch_machine_name[MACHINE_SIGNATURE_SIZE + 9];
206 off_t current_arch_start;
208 struct stat cache_stat, dir_stat;
210 if (stat ((char *) cache_file, &cache_stat) < 0)
213 cache->fd = open ((char *) cache_file, O_RDONLY);
217 cache->updated = FcFalse;
219 FcCacheReadString (cache->fd, name_buf, sizeof (name_buf));
220 if (strcmp (name_buf, FC_GLOBAL_MAGIC_COOKIE) != 0)
223 current_arch_machine_name = FcCacheMachineSignature ();
224 current_arch_start = FcCacheSkipToArch(cache->fd,
225 current_arch_machine_name);
226 if (current_arch_start < 0)
227 goto bail_and_destroy;
229 lseek (cache->fd, current_arch_start, SEEK_SET);
230 FcCacheReadString (cache->fd, candidate_arch_machine_name,
231 sizeof (candidate_arch_machine_name));
232 if (strlen(candidate_arch_machine_name) == 0)
233 goto bail_and_destroy;
239 FcCacheReadString (cache->fd, name_buf, sizeof (name_buf));
240 if (!strlen(name_buf))
243 /* Directory must be older than the global cache file; also
244 cache must be newer than the config file. */
245 if (stat ((char *) name_buf, &dir_stat) < 0 ||
246 dir_stat.st_mtime > cache_stat.st_mtime ||
247 (config_time.set && cache_stat.st_mtime < config_time.time))
251 FcStrSetAdd (staleDirs, FcStrCopy ((FcChar8 *)name_buf));
252 read (cache->fd, &md, sizeof (FcCache));
253 lseek (cache->fd, FcCacheNextOffset (lseek(cache->fd, 0, SEEK_CUR)) + md.count, SEEK_SET);
257 d = malloc (sizeof (FcGlobalCacheDir));
261 d->next = cache->dirs;
264 d->name = (char *)FcStrCopy ((FcChar8 *)name_buf);
266 d->offset = lseek (cache->fd, 0, SEEK_CUR);
267 if (read (cache->fd, &d->metadata, sizeof (FcCache)) != sizeof (FcCache))
269 targ = FcCacheNextOffset (lseek(cache->fd, 0, SEEK_CUR)) + d->metadata.count;
270 if (lseek (cache->fd, targ, SEEK_SET) != targ)
276 for (d = cache->dirs; d; d = next)
291 if (stat ((char *) cache_file, &cache_stat) == 0)
292 unlink ((char *)cache_file);
299 FcGlobalCacheReadDir (FcFontSet *set, FcStrSet *dirs, FcGlobalCache * cache, const char *dir, FcConfig *config)
302 FcBool ret = FcFalse;
307 dir = (char *)FcConfigNormalizeFontDir (config, (FcChar8 *)dir);
308 for (d = cache->dirs; d; d = d->next)
310 if (strncmp (d->name, dir, strlen(dir)) == 0)
312 lseek (cache->fd, d->offset, SEEK_SET);
313 if (!FcDirCacheConsume (cache->fd, dir, set, config))
315 if (strcmp (d->name, dir) == 0)
324 FcGlobalCacheUpdate (FcGlobalCache *cache,
329 FcGlobalCacheDir * d;
331 name = (char *)FcConfigNormalizeFontDir (config, (FcChar8 *)name);
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,
361 FcGlobalCacheDir *dir;
363 off_t current_arch_start = 0, truncate_to;
364 char * current_arch_machine_name, * header;
369 #if defined (HAVE_GETUID) && defined (HAVE_GETEUID)
370 /* Set-UID programs can't safely update the cache */
371 if (getuid () != geteuid ())
375 atomic = FcAtomicCreate (cache_file);
379 if (!FcAtomicLock (atomic))
381 fd = open ((char *) FcAtomicNewFile(atomic), O_RDWR | O_CREAT,
386 fd_orig = open ((char *) FcAtomicOrigFile(atomic), O_RDONLY);
388 current_arch_machine_name = FcCacheMachineSignature ();
390 current_arch_start = 0;
392 current_arch_start = FcCacheSkipToArch (fd_orig,
393 current_arch_machine_name);
395 if (current_arch_start < 0)
396 current_arch_start = FcCacheNextOffset (lseek(fd_orig, 0, SEEK_END));
398 if (!FcCacheCopyOld(fd, fd_orig, current_arch_start))
404 current_arch_start = lseek(fd, 0, SEEK_CUR);
405 if (ftruncate (fd, current_arch_start) == -1)
408 header = malloc (10 + strlen (current_arch_machine_name));
412 truncate_to = current_arch_start + strlen(current_arch_machine_name) + 11;
413 for (dir = cache->dirs; dir; dir = dir->next)
415 truncate_to += strlen(dir->name) + 1;
416 truncate_to += sizeof (FcCache);
417 truncate_to = FcCacheNextOffset (truncate_to);
418 truncate_to += dir->metadata.count;
420 truncate_to -= current_arch_start;
422 FcCacheWriteString (fd, FC_GLOBAL_MAGIC_COOKIE);
423 sprintf (header, "%8x ", (int)truncate_to);
424 strcat (header, current_arch_machine_name);
425 if (!FcCacheWriteString (fd, header))
428 for (dir = cache->dirs; dir; dir = dir->next)
432 const char * d = (const char *)FcConfigNormalizeFontDir (config, (const FcChar8 *)dir->name);
434 FcCacheWriteString (fd, d);
435 write (fd, &dir->metadata, sizeof(FcCache));
436 lseek (fd, FcCacheNextOffset (lseek(fd, 0, SEEK_CUR)), SEEK_SET);
437 write (fd, dir->ent, dir->metadata.count);
441 FcCacheWriteString (fd, "");
443 if (close (fd) == -1)
446 if (!FcAtomicReplaceOrig (atomic))
449 FcAtomicUnlock (atomic);
450 FcAtomicDestroy (atomic);
452 cache->updated = FcFalse;
463 FcAtomicDeleteNew (atomic);
465 FcAtomicUnlock (atomic);
467 FcAtomicDestroy (atomic);
472 * Find the next presumably-mmapable offset after the supplied file
476 FcCacheNextOffset(off_t w)
478 static long pagesize = -1;
480 pagesize = sysconf(_SC_PAGESIZE);
481 if (w % pagesize == 0)
484 return ((w / pagesize)+1)*pagesize;
487 /* return the address of the segment for the provided arch,
488 * or -1 if arch not found */
490 FcCacheSkipToArch (int fd, const char * arch)
492 char candidate_arch_machine_name_count[MACHINE_SIGNATURE_SIZE + 9];
493 char * candidate_arch;
494 off_t current_arch_start = 0;
496 lseek (fd, 0, SEEK_SET);
497 FcCacheSkipString (fd);
498 current_arch_start = lseek (fd, 0, SEEK_CUR);
500 /* skip arches that are not the current arch */
505 if (lseek (fd, current_arch_start, SEEK_SET) != current_arch_start)
508 if (FcCacheReadString (fd, candidate_arch_machine_name_count,
509 sizeof (candidate_arch_machine_name_count)) == 0)
511 if (!strlen(candidate_arch_machine_name_count))
513 bs = strtol(candidate_arch_machine_name_count, &candidate_arch, 16);
515 // count = 0 should probably be distinguished from the !bs condition
516 if (!bs || bs < strlen (candidate_arch_machine_name_count))
519 candidate_arch++; /* skip leading space */
521 if (strcmp (candidate_arch, arch)==0)
522 return current_arch_start;
523 current_arch_start += bs;
529 /* Cuts out the segment at the file pointer (moves everything else
530 * down to cover it), and leaves the file pointer at the end of the
533 FcCacheCopyOld (int fd, int fd_orig, off_t start)
535 char * buf = malloc (8192);
536 char candidate_arch_machine_name[MACHINE_SIGNATURE_SIZE + 9];
538 int c, bytes_skipped;
545 lseek (fd, 0, SEEK_SET); lseek (fd_orig, 0, SEEK_SET);
552 if ((c = read (fd_orig, buf, b)) <= 0)
554 if (write (fd, buf, c) < 0)
561 lseek (fd, start, SEEK_SET);
562 if (FcCacheReadString (fd, candidate_arch_machine_name,
563 sizeof (candidate_arch_machine_name)) == 0)
565 if (!strlen(candidate_arch_machine_name))
568 bs = strtol(candidate_arch_machine_name, 0, 16);
575 lseek (fd, start+bs+bytes_skipped, SEEK_SET);
576 if ((c = read (fd, buf, 8192)) <= 0)
578 lseek (fd, start+bytes_skipped, SEEK_SET);
579 if (write (fd, buf, c) < 0)
584 lseek (fd, start+bytes_skipped, SEEK_SET);
595 /* Does not check that the cache has the appropriate arch section. */
596 /* Also, this can be fooled if the original location has a stale
597 * cache, and the hashed location has an up-to-date cache. Oh well,
598 * sucks to be you in that case! */
600 FcDirCacheValid (const FcChar8 *dir)
602 struct stat file_stat, dir_stat;
605 if (stat ((char *) dir, &dir_stat) < 0)
608 fd = FcDirCacheOpen (dir);
612 if (fstat (fd, &file_stat) < 0)
618 * If the directory has been modified more recently than
619 * the cache file, the cache is not valid
621 if (dir_stat.st_mtime > file_stat.st_mtime)
631 /* Assumes that the cache file in 'dir' exists.
632 * Checks that the cache has the appropriate arch section. */
634 FcDirCacheHasCurrentArch (const FcChar8 *dir)
637 off_t current_arch_start;
638 char *current_arch_machine_name;
640 fd = FcDirCacheOpen (dir);
644 current_arch_machine_name = FcCacheMachineSignature();
645 current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name);
648 if (current_arch_start < 0)
658 FcDirCacheUnlink (const FcChar8 *dir, FcConfig *config)
663 struct stat cache_stat;
664 char name_buf[FC_MAX_FILE_LEN];
666 dir = FcConfigNormalizeFontDir (config, dir);
667 cache_file = (char *)FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
671 /* First remove normal cache file. */
672 if (stat ((char *) cache_file, &cache_stat) == 0 &&
673 unlink ((char *)cache_file) != 0)
676 /* Next remove any applicable hashed files. */
677 fd = -1; collisions = 0;
680 cache_hashed = FcDirCacheHashName (cache_file, collisions++);
686 fd = open(cache_hashed, O_RDONLY);
689 FcStrFree ((FcChar8 *)cache_file);
693 FcCacheReadString (fd, name_buf, sizeof (name_buf));
694 if (!strlen(name_buf))
696 } while (strcmp (name_buf, cache_file) != 0);
698 FcStrFree ((FcChar8 *)cache_file);
701 if (stat ((char *) cache_hashed, &cache_stat) == 0 &&
702 unlink ((char *)cache_hashed) != 0)
704 FcStrFree ((FcChar8 *)cache_hashed);
708 FcStrFree ((FcChar8 *)cache_hashed);
712 FcStrFree ((FcChar8 *)cache_file);
717 FcCacheReadDirs (FcConfig * config, FcGlobalCache * cache,
718 FcStrList *list, FcFontSet * set)
722 FcChar8 *file, *base;
728 * Read in the results from 'list'.
730 while ((dir = FcStrListNext (list)))
732 if (!FcConfigAcceptFilename (config, dir))
736 file = (FcChar8 *) malloc (strlen ((char *) dir) + 1 + FC_MAX_FILE_LEN + 1);
740 strcpy ((char *) file, (char *) dir);
741 strcat ((char *) file, "/");
742 base = file + strlen ((char *) file);
744 subdirs = FcStrSetCreate ();
747 fprintf (stderr, "Can't create directory set\n");
753 if (access ((char *) dir, X_OK) < 0)
761 fprintf (stderr, "\"%s\": ", dir);
765 FcStrSetDestroy (subdirs);
769 if (stat ((char *) dir, &statb) == -1)
771 fprintf (stderr, "\"%s\": ", dir);
773 FcStrSetDestroy (subdirs);
778 if (!S_ISDIR (statb.st_mode))
780 fprintf (stderr, "\"%s\": not a directory, skipping\n", dir);
781 FcStrSetDestroy (subdirs);
785 if (!FcDirCacheValid (dir) || !FcDirCacheRead (set, subdirs, dir, config))
787 if (FcDebug () & FC_DBG_FONTSET)
788 printf ("cache scan dir %s\n", dir);
790 FcDirScanConfig (set, subdirs, cache,
791 config->blanks, dir, FcFalse, config);
793 sublist = FcStrListCreate (subdirs);
794 FcStrSetDestroy (subdirs);
797 fprintf (stderr, "Can't create subdir list in \"%s\"\n", dir);
802 ret += FcCacheReadDirs (config, cache, sublist, set);
805 FcStrListDone (list);
810 FcCacheRead (FcConfig *config, FcGlobalCache * cache)
812 FcFontSet * s = FcFontSetCreate();
816 if (FcCacheReadDirs (config, cache, FcConfigGetConfigDirs (config), s))
822 FcFontSetDestroy (s);
826 static const char bin2hex[] = { '0', '1', '2', '3',
829 'c', 'd', 'e', 'f' };
832 FcDirCacheHashName (char * cache_file, int collisions)
834 unsigned char hash[16], hex_hash[33];
836 unsigned char uscore = '_';
839 struct MD5Context ctx;
842 MD5Update (&ctx, (unsigned char *)cache_file, strlen (cache_file));
844 for (i = 0; i < collisions; i++)
845 MD5Update (&ctx, &uscore, 1);
847 MD5Final (hash, &ctx);
849 for (cnt = 0; cnt < 16; ++cnt)
851 hex_hash[2*cnt] = bin2hex[hash[cnt] >> 4];
852 hex_hash[2*cnt+1] = bin2hex[hash[cnt] & 0xf];
856 tmp = FcStrPlus ((FcChar8 *)hex_hash, (FcChar8 *)FC_CACHE_SUFFIX);
860 cache_hashed = (char *)FcStrPlus ((FcChar8 *)PKGCACHEDIR"/", tmp);
866 /* Opens the hashed name for cache_file.
867 * This would fail in the unlikely event of a collision and subsequent
868 * removal of the file which originally caused the collision. */
870 FcDirCacheOpen (const FcChar8 *dir)
873 int fd = -1, collisions = 0;
874 char *cache_file, *cache_hashed;
875 char name_buf[FC_MAX_FILE_LEN];
876 struct stat dir_stat;
878 cache_file = (char *)FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
882 fd = open(cache_file, O_RDONLY);
886 if (stat ((char *)dir, &dir_stat) == -1)
893 FcChar8 * name_buf_dir;
895 cache_hashed = FcDirCacheHashName (cache_file, collisions++);
901 fd = open(cache_hashed, O_RDONLY);
902 FcStrFree ((FcChar8 *)cache_hashed);
906 FcCacheReadString (fd, name_buf, sizeof (name_buf));
907 if (!strlen(name_buf))
910 name_buf_dir = FcStrDirname ((FcChar8 *)name_buf);
911 if (stat ((char *)name_buf_dir, &c) == -1)
913 FcStrFree (name_buf_dir);
916 FcStrFree (name_buf_dir);
917 found = c.st_ino == dir_stat.st_ino;
926 /* read serialized state from the cache file */
928 FcDirCacheRead (FcFontSet * set, FcStrSet * dirs, const FcChar8 *dir, FcConfig *config)
931 char *current_arch_machine_name;
932 char candidate_arch_machine_name[9+MACHINE_SIGNATURE_SIZE];
933 off_t current_arch_start = 0;
934 char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1];
936 fd = FcDirCacheOpen (dir);
940 current_arch_machine_name = FcCacheMachineSignature();
941 current_arch_start = FcCacheSkipToArch(fd,
942 current_arch_machine_name);
943 if (current_arch_start < 0)
946 lseek (fd, current_arch_start, SEEK_SET);
947 if (FcCacheReadString (fd, candidate_arch_machine_name,
948 sizeof (candidate_arch_machine_name)) == 0)
951 while (strlen(FcCacheReadString (fd, subdirName, sizeof (subdirName))) > 0)
952 FcStrSetAdd (dirs, (FcChar8 *)subdirName);
954 if (!FcDirCacheConsume (fd, (const char *)dir, set, config))
967 FcDirCacheConsume (int fd, const char * dir, FcFontSet *set, FcConfig *config)
970 void * current_dir_block;
973 read(fd, &metadata, sizeof(FcCache));
974 if (metadata.magic != FC_CACHE_MAGIC)
979 pos = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR));
980 lseek (fd, pos, SEEK_SET);
981 FcConfigAddFontDir (config, (FcChar8 *)dir);
985 pos = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR));
986 current_dir_block = mmap (0, metadata.count,
987 PROT_READ, MAP_SHARED, fd, pos);
988 lseek (fd, pos+metadata.count, SEEK_SET);
989 if (current_dir_block == MAP_FAILED)
992 FcCacheAddBankDir (metadata.bank, dir);
994 FcConfigAddFontDir (config, (FcChar8 *)dir);
996 if (!FcFontSetUnserialize (&metadata, set, current_dir_block))
1003 FcDirCacheProduce (FcFontSet *set, FcCache *metadata)
1005 void * current_dir_block, * final_dir_block;
1006 static unsigned int rand_state = 0;
1007 int bank, needed_bytes_no_align;
1010 rand_state = time(0L);
1011 bank = rand_r(&rand_state);
1013 while (FcCacheHaveBank(bank))
1014 bank = rand_r(&rand_state);
1016 memset (metadata, 0, sizeof(FcCache));
1018 needed_bytes_no_align = FcFontSetNeededBytes (set);
1019 metadata->count = needed_bytes_no_align +
1020 FcFontSetNeededBytesAlign ();
1021 metadata->magic = FC_CACHE_MAGIC;
1022 metadata->bank = bank;
1024 if (!needed_bytes_no_align) /* not a failure, no fonts to write */
1026 /* no, you don't really need to write any bytes at all. */
1027 metadata->count = 0;
1031 current_dir_block = malloc (metadata->count);
1032 if (!current_dir_block)
1035 memset (current_dir_block, 0, metadata->count);
1036 final_dir_block = FcFontSetDistributeBytes (metadata, current_dir_block);
1038 if ((void *)((char *)current_dir_block+metadata->count) < final_dir_block)
1041 if (!FcFontSetSerialize (bank, set))
1044 return current_dir_block;
1047 free (current_dir_block);
1051 /* write serialized state to the cache file */
1053 FcDirCacheWrite (FcFontSet *set, FcStrSet *dirs, const FcChar8 *dir)
1057 int fd, fd_orig, i, dirs_count;
1060 off_t current_arch_start = 0, truncate_to;
1061 char name_buf[FC_MAX_FILE_LEN];
1064 char *current_arch_machine_name, * header;
1065 void *current_dir_block = 0;
1067 dir = FcConfigNormalizeFontDir (FcConfigGetCurrent(), dir);
1071 cache_file = (char *)FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
1075 /* Ensure that we're not trampling a cache for some other dir. */
1076 /* This is slightly different from FcDirCacheOpen, since it
1077 * needs the filename, not the file descriptor. */
1078 fd = -1; collisions = 0;
1081 cache_hashed = FcDirCacheHashName (cache_file, collisions++);
1087 fd = open(cache_hashed, O_RDONLY);
1090 FcCacheReadString (fd, name_buf, sizeof (name_buf));
1093 if (!strlen(name_buf))
1096 if (strcmp (name_buf, cache_file) != 0)
1100 current_dir_block = FcDirCacheProduce (set, &metadata);
1102 if (metadata.count && !current_dir_block)
1105 if (FcDebug () & FC_DBG_CACHE)
1106 printf ("FcDirCacheWriteDir cache_file \"%s\"\n", cache_file);
1108 atomic = FcAtomicCreate ((FcChar8 *)cache_hashed);
1112 if (!FcAtomicLock (atomic))
1114 /* Now try rewriting the original version of the file. */
1115 FcAtomicDestroy (atomic);
1117 atomic = FcAtomicCreate ((FcChar8 *)cache_file);
1118 fd_orig = open (cache_file, O_RDONLY);
1120 fd_orig = open((char *)FcAtomicOrigFile (atomic), O_RDONLY);
1122 fd = open((char *)FcAtomicNewFile (atomic), O_RDWR | O_CREAT, 0666);
1127 /* In all cases, try opening the real location of the cache file first. */
1128 /* (even if that's not atomic.) */
1129 fd_orig = open (cache_file, O_RDONLY);
1131 fd_orig = open((char *)FcAtomicOrigFile (atomic), O_RDONLY);
1133 fd = open((char *)FcAtomicNewFile (atomic), O_RDWR | O_CREAT, 0666);
1137 FcCacheWriteString (fd, cache_file);
1139 current_arch_machine_name = FcCacheMachineSignature ();
1140 current_arch_start = 0;
1143 current_arch_start =
1144 FcCacheSkipToArch(fd_orig, current_arch_machine_name);
1146 if (current_arch_start < 0)
1147 current_arch_start = FcCacheNextOffset (lseek(fd_orig, 0, SEEK_END));
1149 if (fd_orig != -1 && !FcCacheCopyOld(fd, fd_orig, current_arch_start))
1155 current_arch_start = lseek(fd, 0, SEEK_CUR);
1156 if (ftruncate (fd, current_arch_start) == -1)
1159 /* allocate space for subdir names in this block */
1161 for (i = 0; i < dirs->size; i++)
1162 dirs_count += strlen((char *)dirs->strs[i]) + 1;
1165 /* now write the address of the next offset */
1166 truncate_to = FcCacheNextOffset (FcCacheNextOffset (current_arch_start + sizeof (FcCache) + dirs_count) + metadata.count) - current_arch_start;
1167 header = malloc (10 + strlen (current_arch_machine_name));
1170 sprintf (header, "%8x ", (int)truncate_to);
1171 strcat (header, current_arch_machine_name);
1172 if (!FcCacheWriteString (fd, header))
1175 for (i = 0; i < dirs->size; i++)
1176 FcCacheWriteString (fd, (char *)dirs->strs[i]);
1177 FcCacheWriteString (fd, "");
1179 write (fd, &metadata, sizeof(FcCache));
1182 lseek (fd, FcCacheNextOffset (lseek(fd, 0, SEEK_END)), SEEK_SET);
1183 write (fd, current_dir_block, metadata.count);
1184 free (current_dir_block);
1187 /* this actually serves to pad out the cache file, if needed */
1188 if (ftruncate (fd, current_arch_start + truncate_to) == -1)
1192 if (!FcAtomicReplaceOrig(atomic))
1194 FcStrFree ((FcChar8 *)cache_hashed);
1195 FcAtomicUnlock (atomic);
1196 FcAtomicDestroy (atomic);
1204 FcAtomicUnlock (atomic);
1206 FcAtomicDestroy (atomic);
1208 FcStrFree ((FcChar8 *)cache_hashed);
1210 unlink ((char *)cache_file);
1212 if (current_dir_block)
1213 free (current_dir_block);
1219 FcCacheMachineSignature ()
1221 static char buf[MACHINE_SIGNATURE_SIZE];
1222 int32_t magic = ENDIAN_TEST;
1223 char * m = (char *)&magic;
1225 sprintf (buf, "%2x%2x%2x%2x "
1226 "%4x %4x %4x %4x %4x %4x %4x %4x %4x %4x %4x %4x "
1227 "%4x %4x %4x %4x %4x %4x %4x %4x\n",
1228 m[0], m[1], m[2], m[3],
1229 (unsigned int)sizeof (char),
1230 (unsigned int)sizeof (char *),
1231 (unsigned int)sizeof (int),
1232 (unsigned int)sizeof (FcPattern),
1233 (unsigned int)sizeof (FcPatternEltPtr),
1234 (unsigned int)sizeof (struct _FcPatternElt *),
1235 (unsigned int)sizeof (FcPatternElt),
1236 (unsigned int)sizeof (FcObjectPtr),
1237 (unsigned int)sizeof (FcValueListPtr),
1238 (unsigned int)sizeof (FcValue),
1239 (unsigned int)sizeof (FcValueBinding),
1240 (unsigned int)sizeof (struct _FcValueList *),
1241 (unsigned int)sizeof (FcCharSet),
1242 (unsigned int)sizeof (FcCharLeaf **),
1243 (unsigned int)sizeof (FcChar16 *),
1244 (unsigned int)sizeof (FcChar16),
1245 (unsigned int)sizeof (FcCharLeaf),
1246 (unsigned int)sizeof (FcChar32),
1247 (unsigned int)sizeof (FcCache),
1248 (unsigned int)sysconf(_SC_PAGESIZE));
1253 static int banks_ptr = 0, banks_alloc = 0;
1254 int * _fcBankId = 0, * _fcBankIdx = 0;
1255 static const char ** bankDirs = 0;
1258 FcCacheHaveBank (int bank)
1262 if (bank < FC_BANK_FIRST)
1265 for (i = 0; i < banks_ptr; i++)
1266 if (_fcBankId[i] == bank)
1273 FcCacheBankToIndexMTF (int bank)
1277 for (i = 0; i < banks_ptr; i++)
1278 if (_fcBankId[_fcBankIdx[i]] == bank)
1280 int t = _fcBankIdx[i];
1282 for (j = i; j > 0; j--)
1283 _fcBankIdx[j] = _fcBankIdx[j-1];
1288 if (banks_ptr >= banks_alloc)
1293 b = realloc (_fcBankId, (banks_alloc + 4) * sizeof(int));
1298 bidx = realloc (_fcBankIdx, (banks_alloc + 4) * sizeof(int));
1303 bds = realloc (bankDirs, (banks_alloc + 4) * sizeof (char *));
1312 _fcBankId[i] = bank;
1318 FcCacheAddBankDir (int bank, const char * dir)
1320 int bi = FcCacheBankToIndexMTF (bank);
1325 bankDirs[bi] = (const char *)FcStrCopy ((FcChar8 *)dir);
1329 FcCacheFindBankDir (int bank)
1331 int bi = FcCacheBankToIndex (bank);
1332 return bankDirs[bi];
1336 * This code implements the MD5 message-digest algorithm.
1337 * The algorithm is due to Ron Rivest. This code was
1338 * written by Colin Plumb in 1993, no copyright is claimed.
1339 * This code is in the public domain; do with it what you wish.
1341 * Equivalent code is available from RSA Data Security, Inc.
1342 * This code has been tested against that, and is equivalent,
1343 * except that you don't need to include two pages of legalese
1346 * To compute the message digest of a chunk of bytes, declare an
1347 * MD5Context structure, pass it to MD5Init, call MD5Update as
1348 * needed on buffers full of bytes, and then call MD5Final, which
1349 * will fill a supplied 16-byte array with the digest.
1353 #define byteReverse(buf, len) /* Nothing */
1356 * Note: this code is harmless on little-endian machines.
1358 void byteReverse(unsigned char *buf, unsigned longs)
1362 t = (FcChar32) ((unsigned) buf[3] << 8 | buf[2]) << 16 |
1363 ((unsigned) buf[1] << 8 | buf[0]);
1364 *(FcChar32 *) buf = t;
1371 * Start MD5 accumulation. Set bit count to 0 and buffer to mysterious
1372 * initialization constants.
1374 static void MD5Init(struct MD5Context *ctx)
1376 ctx->buf[0] = 0x67452301;
1377 ctx->buf[1] = 0xefcdab89;
1378 ctx->buf[2] = 0x98badcfe;
1379 ctx->buf[3] = 0x10325476;
1386 * Update context to reflect the concatenation of another buffer full
1389 static void MD5Update(struct MD5Context *ctx, unsigned char *buf, unsigned len)
1393 /* Update bitcount */
1396 if ((ctx->bits[0] = t + ((FcChar32) len << 3)) < t)
1397 ctx->bits[1]++; /* Carry from low to high */
1398 ctx->bits[1] += len >> 29;
1400 t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data */
1402 /* Handle any leading odd-sized chunks */
1405 unsigned char *p = (unsigned char *) ctx->in + t;
1409 memcpy(p, buf, len);
1413 byteReverse(ctx->in, 16);
1414 MD5Transform(ctx->buf, (FcChar32 *) ctx->in);
1418 /* Process data in 64-byte chunks */
1421 memcpy(ctx->in, buf, 64);
1422 byteReverse(ctx->in, 16);
1423 MD5Transform(ctx->buf, (FcChar32 *) ctx->in);
1428 /* Handle any remaining bytes of data. */
1430 memcpy(ctx->in, buf, len);
1434 * Final wrapup - pad to 64-byte boundary with the bit pattern
1435 * 1 0* (64-bit count of bits processed, MSB-first)
1437 static void MD5Final(unsigned char digest[16], struct MD5Context *ctx)
1442 /* Compute number of bytes mod 64 */
1443 count = (ctx->bits[0] >> 3) & 0x3F;
1445 /* Set the first char of padding to 0x80. This is safe since there is
1446 always at least one byte free */
1447 p = ctx->in + count;
1450 /* Bytes of padding needed to make 64 bytes */
1451 count = 64 - 1 - count;
1453 /* Pad out to 56 mod 64 */
1455 /* Two lots of padding: Pad the first block to 64 bytes */
1456 memset(p, 0, count);
1457 byteReverse(ctx->in, 16);
1458 MD5Transform(ctx->buf, (FcChar32 *) ctx->in);
1460 /* Now fill the next block with 56 bytes */
1461 memset(ctx->in, 0, 56);
1463 /* Pad block to 56 bytes */
1464 memset(p, 0, count - 8);
1466 byteReverse(ctx->in, 14);
1468 /* Append length in bits and transform */
1469 ((FcChar32 *) ctx->in)[14] = ctx->bits[0];
1470 ((FcChar32 *) ctx->in)[15] = ctx->bits[1];
1472 MD5Transform(ctx->buf, (FcChar32 *) ctx->in);
1473 byteReverse((unsigned char *) ctx->buf, 4);
1474 memcpy(digest, ctx->buf, 16);
1475 memset(ctx, 0, sizeof(ctx)); /* In case it's sensitive */
1479 /* The four core functions - F1 is optimized somewhat */
1481 /* #define F1(x, y, z) (x & y | ~x & z) */
1482 #define F1(x, y, z) (z ^ (x & (y ^ z)))
1483 #define F2(x, y, z) F1(z, x, y)
1484 #define F3(x, y, z) (x ^ y ^ z)
1485 #define F4(x, y, z) (y ^ (x | ~z))
1487 /* This is the central step in the MD5 algorithm. */
1488 #define MD5STEP(f, w, x, y, z, data, s) \
1489 ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x )
1492 * The core of the MD5 algorithm, this alters an existing MD5 hash to
1493 * reflect the addition of 16 longwords of new data. MD5Update blocks
1494 * the data and converts bytes into longwords for this routine.
1496 static void MD5Transform(FcChar32 buf[4], FcChar32 in[16])
1498 register FcChar32 a, b, c, d;
1505 MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
1506 MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
1507 MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
1508 MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
1509 MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
1510 MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
1511 MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
1512 MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
1513 MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
1514 MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
1515 MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
1516 MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
1517 MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
1518 MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
1519 MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
1520 MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);
1522 MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);
1523 MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);
1524 MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
1525 MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
1526 MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);
1527 MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
1528 MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
1529 MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
1530 MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
1531 MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
1532 MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
1533 MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);
1534 MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
1535 MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
1536 MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);
1537 MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
1539 MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);
1540 MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);
1541 MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
1542 MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
1543 MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);
1544 MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
1545 MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
1546 MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
1547 MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
1548 MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
1549 MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
1550 MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);
1551 MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
1552 MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
1553 MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
1554 MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
1556 MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);
1557 MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);
1558 MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
1559 MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);
1560 MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
1561 MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
1562 MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
1563 MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
1564 MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
1565 MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
1566 MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
1567 MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
1568 MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
1569 MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
1570 MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
1571 MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);