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.
29 #include <sys/types.h>
33 #if defined(HAVE_MMAP) || defined(__CYGWIN__)
34 # include <sys/mman.h>
35 # include <sys/utsname.h>
38 #define ENDIAN_TEST 0x12345678
39 #define MACHINE_SIGNATURE_SIZE (9 + 5*20 + 1)
40 /* for when we don't have sysconf: */
41 #define FC_HARDCODED_PAGESIZE 8192
48 FcDirCacheOpen (const FcChar8 * dir);
51 FcDirCacheHashName (char * cache_file, int collisions);
54 FcCacheSkipToArch (int fd, const char * arch);
57 FcCacheCopyOld (int fd, int fd_orig, off_t start);
60 FcDirCacheProduce (FcFontSet *set, FcCache * metadata);
63 FcDirCacheConsume (int fd, const char * dir, FcFontSet *set, FcConfig *config);
66 FcCacheNextOffset(off_t w);
69 FcCacheMachineSignature (void);
72 FcCacheHaveBank (int bank);
75 FcCacheAddBankDir (int bank, const char * dir);
83 static void MD5Init(struct MD5Context *ctx);
84 static void MD5Update(struct MD5Context *ctx, unsigned char *buf, unsigned len);
85 static void MD5Final(unsigned char digest[16], struct MD5Context *ctx);
86 static void MD5Transform(FcChar32 buf[4], FcChar32 in[16]);
88 #define FC_DBG_CACHE_REF 1024
91 FcCacheReadString (int fd, char *dest, int len)
99 size = read (fd, dest, len-1);
104 slen = strlen (dest);
106 lseek (fd, slen - size + 1, SEEK_CUR);
107 return slen < len ? dest : 0;
114 FcCacheSkipString (int fd)
120 while ( (size = read (fd, buf, sizeof (buf)-1)) > 0)
126 lseek (fd, slen - size + 1, SEEK_CUR);
133 FcCacheWriteString (int fd, const char *chars)
135 if (write (fd, chars, strlen(chars)+1) != strlen(chars)+1)
141 FcGlobalCacheDirDestroy (FcGlobalCacheDir *d)
143 FcStrSetDestroy (d->subdirs);
144 FcMemFree (FC_MEM_STRING, strlen (d->name)+1);
146 FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCacheDir));
151 FcGlobalCacheCreate (void)
153 FcGlobalCache *cache;
155 cache = malloc (sizeof (FcGlobalCache));
158 FcMemAlloc (FC_MEM_CACHE, sizeof (FcGlobalCache));
160 cache->updated = FcFalse;
166 FcGlobalCacheDestroy (FcGlobalCache *cache)
168 FcGlobalCacheDir *d, *next;
170 for (d = cache->dirs; d; d = next)
173 FcGlobalCacheDirDestroy (d);
175 FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCache));
180 FcGlobalCacheLoad (FcGlobalCache *cache,
182 const FcChar8 *cache_file,
185 char name_buf[FC_MAX_FILE_LEN];
186 FcGlobalCacheDir *d, *next;
187 FcFileTime config_time = FcConfigModifiedTime (config);
188 char * current_arch_machine_name;
189 char candidate_arch_machine_name[MACHINE_SIGNATURE_SIZE + 9];
190 off_t current_arch_start;
192 struct stat cache_stat, dir_stat;
193 char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1];
195 if (stat ((char *) cache_file, &cache_stat) < 0)
198 cache->fd = open ((char *) cache_file, O_RDONLY | O_BINARY);
202 cache->updated = FcFalse;
204 if (!FcCacheReadString (cache->fd, name_buf, sizeof (name_buf)))
205 goto bail_and_destroy;
206 if (strcmp (name_buf, FC_GLOBAL_MAGIC_COOKIE) != 0)
207 goto bail_and_destroy;
209 current_arch_machine_name = FcCacheMachineSignature ();
210 current_arch_start = FcCacheSkipToArch(cache->fd,
211 current_arch_machine_name);
212 if (current_arch_start < 0)
215 lseek (cache->fd, current_arch_start, SEEK_SET);
216 if (!FcCacheReadString (cache->fd, candidate_arch_machine_name,
217 sizeof (candidate_arch_machine_name)))
218 goto bail_and_destroy;
219 if (strlen(candidate_arch_machine_name) == 0)
220 goto bail_and_destroy;
226 if (!FcCacheReadString (cache->fd, name_buf, sizeof (name_buf)) ||
230 /* Directory must be older than the global cache file; also
231 cache must be newer than the config file. */
232 if (stat ((char *) name_buf, &dir_stat) < 0 ||
233 dir_stat.st_mtime > cache_stat.st_mtime ||
234 (config_time.set && cache_stat.st_mtime < config_time.time))
239 FcStrSetAdd (staleDirs, (FcChar8 *)name_buf);
242 while (FcCacheReadString (cache->fd, subdirName,
243 sizeof (subdirName)) &&
247 if (read (cache->fd, &md, sizeof (FcCache)) != sizeof(FcCache))
249 perror ("read metadata");
252 off = FcCacheNextOffset (lseek(cache->fd, 0, SEEK_CUR)) + md.count;
253 if (lseek (cache->fd, off, SEEK_SET) != off)
261 d = malloc (sizeof (FcGlobalCacheDir));
265 d->next = cache->dirs;
268 d->name = (char *)FcStrCopy ((FcChar8 *)name_buf);
270 d->state = FcGCDirFileRead;
272 d->subdirs = FcStrSetCreate();
275 if (!FcCacheReadString (cache->fd, subdirName,
276 sizeof (subdirName)) ||
277 !strlen (subdirName))
279 FcStrSetAdd (d->subdirs, (FcChar8 *)subdirName);
282 d->offset = lseek (cache->fd, 0, SEEK_CUR);
283 if (read (cache->fd, &d->metadata, sizeof (FcCache)) != sizeof (FcCache))
285 targ = FcCacheNextOffset (lseek(cache->fd, 0, SEEK_CUR)) + d->metadata.count;
286 if (lseek (cache->fd, targ, SEEK_SET) != targ)
292 for (d = cache->dirs; d; d = next)
307 if (stat ((char *) cache_file, &cache_stat) == 0)
308 unlink ((char *)cache_file);
315 FcGlobalCacheReadDir (FcFontSet *set, FcStrSet *dirs, FcGlobalCache * cache, const char *dir, FcConfig *config)
324 if (!(dir = (char *)FcConfigNormalizeFontDir (config, (FcChar8 *)dir)))
325 return FcFalse; /* non-existing directory */
327 for (d = cache->dirs; d; d = d->next)
329 if (strcmp (d->name, dir) == 0)
331 if (d->state == FcGCDirDisabled)
334 if (d->state == FcGCDirFileRead)
336 lseek (cache->fd, d->offset, SEEK_SET);
337 if (!FcDirCacheConsume (cache->fd, d->name, set, config))
340 for (i = 0; i < d->subdirs->num; i++)
341 FcStrSetAdd (dirs, (FcChar8 *)d->subdirs->strs[i]);
343 d->state = FcGCDirConsumed;
352 static FcGlobalCacheDir *
353 FcGlobalCacheDirFind (FcGlobalCache *cache, const char *name)
355 FcGlobalCacheDir * d;
360 for (d = cache->dirs; d; d = d->next)
361 if (strcmp((const char *)d->name, (const char *)name) == 0)
368 FcGlobalCacheUpdate (FcGlobalCache *cache,
370 const char *orig_name,
378 name = (char *)FcConfigNormalizeFontDir (config, (FcChar8 *)orig_name);
381 fprintf(stderr, "Invalid directory name %s\n", orig_name);
385 d = FcGlobalCacheDirFind (cache, name);
389 d = malloc (sizeof (FcGlobalCacheDir));
392 d->next = cache->dirs;
395 /* free old resources */
396 FcStrFree ((FcChar8 *)d->name);
398 FcStrSetDestroy (d->subdirs);
401 cache->updated = FcTrue;
403 d->name = (char *)FcStrCopy ((FcChar8 *)name);
404 d->ent = FcDirCacheProduce (set, &d->metadata);
406 d->subdirs = FcStrSetCreate();
407 d->state = FcGCDirUpdated;
408 for (i = 0; i < dirs->num; i++)
409 FcStrSetAdd (d->subdirs, dirs->strs[i]);
414 FcGlobalCacheSave (FcGlobalCache *cache,
415 const FcChar8 *cache_file,
419 FcGlobalCacheDir *dir;
421 off_t current_arch_start = 0, truncate_to;
422 char * current_arch_machine_name, * header;
427 #if defined (HAVE_GETUID) && defined (HAVE_GETEUID)
428 /* Set-UID programs can't safely update the cache */
429 if (getuid () != geteuid ())
433 atomic = FcAtomicCreate (cache_file);
437 if (!FcAtomicLock (atomic))
439 fd = open ((char *) FcAtomicNewFile(atomic), O_RDWR | O_CREAT | O_BINARY,
443 FcCacheWriteString (fd, FC_GLOBAL_MAGIC_COOKIE);
445 fd_orig = open ((char *) FcAtomicOrigFile(atomic), O_RDONLY | O_BINARY);
447 current_arch_machine_name = FcCacheMachineSignature ();
449 current_arch_start = 0;
451 current_arch_start = FcCacheSkipToArch (fd_orig,
452 current_arch_machine_name);
454 if (current_arch_start < 0)
456 off_t i = lseek(fd_orig, 0, SEEK_END);
457 if (i < strlen (FC_GLOBAL_MAGIC_COOKIE)+1)
458 i = strlen (FC_GLOBAL_MAGIC_COOKIE)+1;
459 current_arch_start = FcCacheNextOffset (i);
462 if (!FcCacheCopyOld(fd, fd_orig, current_arch_start))
465 current_arch_start = lseek(fd, 0, SEEK_CUR);
466 #if defined (HAVE_FTRUNCATE)
467 if (ftruncate (fd, current_arch_start) == -1)
470 #if defined (HAVE_CHSIZE)
471 if (chsize (fd, current_arch_start) == -1)
478 header = malloc (10 + strlen (current_arch_machine_name));
482 truncate_to = current_arch_start + strlen(current_arch_machine_name) + 11;
483 for (dir = cache->dirs; dir; dir = dir->next)
487 if (dir->state == FcGCDirDisabled)
489 truncate_to += strlen(dir->name) + 1;
490 truncate_to += sizeof (FcCache);
491 truncate_to = FcCacheNextOffset (truncate_to);
492 truncate_to += dir->metadata.count;
494 for (i = 0; i < dir->subdirs->size; i++)
495 truncate_to += strlen((char *)dir->subdirs->strs[i]) + 1;
498 truncate_to -= current_arch_start;
500 sprintf (header, "%8x ", (int)truncate_to);
501 strcat (header, current_arch_machine_name);
502 if (!FcCacheWriteString (fd, header))
507 for (dir = cache->dirs; dir; dir = dir->next)
513 if (!dir->name || dir->state == FcGCDirDisabled)
515 d = (const char *)FcConfigNormalizeFontDir (config, (const FcChar8 *)dir->name);
519 if (dir->metadata.count && !dir->ent)
521 if (dir->state == FcGCDirUpdated || fd_orig < 0)
523 fprintf(stderr, "Invalid metadata entry for %s, skipping...\n", d);
526 /* copy the old content */
527 dir->ent = malloc (dir->metadata.count);
530 perror("malloc error");
533 off = FcCacheNextOffset (dir->offset + sizeof(FcCache));
534 if (lseek (fd_orig, off, SEEK_SET) != off)
540 if (read (fd_orig, dir->ent, dir->metadata.count)
541 != dir->metadata.count)
549 FcCacheWriteString (fd, d);
551 for (i = 0; i < dir->subdirs->size; i++)
552 FcCacheWriteString (fd, (char *)dir->subdirs->strs[i]);
553 FcCacheWriteString (fd, "");
555 if (write (fd, &dir->metadata, sizeof(FcCache)) != sizeof(FcCache))
557 perror ("write metadata");
561 off = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR));
562 if (lseek (fd, off, SEEK_SET) != off)
568 if (dir->metadata.count)
570 if (write (fd, dir->ent, dir->metadata.count) != dir->metadata.count)
572 perror ("write dirent");
579 FcCacheWriteString (fd, "");
581 if (close (fd) == -1)
587 if (!FcAtomicReplaceOrig (atomic))
590 FcAtomicUnlock (atomic);
591 FcAtomicDestroy (atomic);
593 cache->updated = FcFalse;
604 FcAtomicDeleteNew (atomic);
606 FcAtomicUnlock (atomic);
608 FcAtomicDestroy (atomic);
613 * Find the next presumably-mmapable offset after the supplied file
617 FcCacheNextOffset(off_t w)
619 static long pagesize = -1;
621 #if defined (HAVE_SYSCONF)
622 pagesize = sysconf(_SC_PAGESIZE);
624 pagesize = FC_HARDCODED_PAGESIZE;
626 if (w % pagesize == 0)
629 return ((w / pagesize)+1)*pagesize;
632 /* return the address of the segment for the provided arch,
633 * or -1 if arch not found */
635 FcCacheSkipToArch (int fd, const char * arch)
637 char candidate_arch_machine_name_count[MACHINE_SIGNATURE_SIZE + 9];
638 char * candidate_arch;
639 off_t current_arch_start = 0;
641 lseek (fd, 0, SEEK_SET);
642 FcCacheSkipString (fd);
643 current_arch_start = lseek (fd, 0, SEEK_CUR);
645 /* skip arches that are not the current arch */
650 if (lseek (fd, current_arch_start, SEEK_SET) != current_arch_start)
653 if (FcCacheReadString (fd, candidate_arch_machine_name_count,
654 sizeof (candidate_arch_machine_name_count)) == 0)
656 if (!strlen(candidate_arch_machine_name_count))
658 bs = strtol(candidate_arch_machine_name_count, &candidate_arch, 16);
660 /* count = 0 should probably be distinguished from the !bs condition */
661 if (!bs || bs < strlen (candidate_arch_machine_name_count))
664 candidate_arch++; /* skip leading space */
666 if (strcmp (candidate_arch, arch)==0)
667 return current_arch_start;
668 current_arch_start += bs;
669 current_arch_start = FcCacheNextOffset (current_arch_start);
673 /* Cuts out the segment at the file pointer (moves everything else
674 * down to cover it), and leaves the file pointer at the end of the
677 FcCacheCopyOld (int fd, int fd_orig, off_t start)
679 char * buf = malloc (8192);
680 char candidate_arch_machine_name[MACHINE_SIGNATURE_SIZE + 9];
682 int c, bytes_skipped;
689 lseek (fd, 0, SEEK_SET); lseek (fd_orig, 0, SEEK_SET);
690 FcCacheSkipString (fd); FcCacheSkipString (fd_orig);
697 if ((c = read (fd_orig, buf, b)) <= 0)
699 if (write (fd, buf, c) < 0)
706 lseek (fd, start, SEEK_SET);
707 if (FcCacheReadString (fd, candidate_arch_machine_name,
708 sizeof (candidate_arch_machine_name)) == 0)
710 if (!strlen(candidate_arch_machine_name))
713 bs = strtol(candidate_arch_machine_name, 0, 16);
720 lseek (fd, start+bs+bytes_skipped, SEEK_SET);
721 if ((c = read (fd, buf, 8192)) <= 0)
723 lseek (fd, start+bytes_skipped, SEEK_SET);
724 if (write (fd, buf, c) < 0)
729 lseek (fd, start+bytes_skipped, SEEK_SET);
740 /* Does not check that the cache has the appropriate arch section. */
741 /* Also, this can be fooled if the original location has a stale
742 * cache, and the hashed location has an up-to-date cache. Oh well,
743 * sucks to be you in that case! */
745 FcDirCacheValid (const FcChar8 *dir)
747 struct stat file_stat, dir_stat;
750 if (stat ((char *) dir, &dir_stat) < 0)
753 fd = FcDirCacheOpen (dir);
757 if (fstat (fd, &file_stat) < 0)
763 * If the directory has been modified more recently than
764 * the cache file, the cache is not valid
766 if (dir_stat.st_mtime > file_stat.st_mtime)
776 /* Assumes that the cache file in 'dir' exists.
777 * Checks that the cache has the appropriate arch section. */
779 FcDirCacheHasCurrentArch (const FcChar8 *dir)
782 off_t current_arch_start;
783 char *current_arch_machine_name;
785 char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1];
787 fd = FcDirCacheOpen (dir);
791 current_arch_machine_name = FcCacheMachineSignature();
792 current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name);
794 if (current_arch_start >= 0)
796 if (lseek (fd, current_arch_start, SEEK_SET) != current_arch_start)
799 FcCacheSkipString (fd);
801 while (FcCacheReadString (fd, subdirName, sizeof (subdirName)) && strlen (subdirName) > 0)
804 if (read(fd, &metadata, sizeof(FcCache)) != sizeof(FcCache))
807 if (metadata.magic != FC_CACHE_MAGIC)
813 if (current_arch_start < 0)
825 FcDirCacheUnlink (const FcChar8 *dir, FcConfig *config)
828 char *cache_hashed = 0;
830 struct stat cache_stat;
831 char name_buf[FC_MAX_FILE_LEN];
833 dir = FcConfigNormalizeFontDir (config, dir);
834 cache_file = (char *)FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
838 /* First remove normal cache file. */
839 if (stat ((char *) cache_file, &cache_stat) == 0)
840 unlink ((char *)cache_file);
842 /* Next remove any applicable hashed files. */
843 fd = -1; collisions = 0;
847 FcStrFree ((FcChar8 *)cache_hashed);
849 cache_hashed = FcDirCacheHashName (cache_file, collisions++);
855 fd = open(cache_hashed, O_RDONLY | O_BINARY);
858 FcStrFree ((FcChar8 *)cache_hashed);
859 FcStrFree ((FcChar8 *)cache_file);
863 if (!FcCacheReadString (fd, name_buf, sizeof (name_buf)) || !strlen(name_buf))
865 FcStrFree ((FcChar8 *)cache_hashed);
868 } while (strcmp (name_buf, cache_file) != 0);
872 if (stat ((char *) cache_hashed, &cache_stat) == 0 &&
873 unlink ((char *)cache_hashed) != 0)
875 FcStrFree ((FcChar8 *)cache_hashed);
879 FcStrFree ((FcChar8 *)cache_file);
880 FcStrFree ((FcChar8 *)cache_hashed);
884 FcStrFree ((FcChar8 *)cache_file);
889 FcCacheReadDirs (FcConfig * config, FcGlobalCache * cache,
890 FcStrList *list, FcFontSet * set, FcStrSet *processed_dirs)
900 * Read in the results from 'list'.
902 while ((dir = FcStrListNext (list)))
904 if (!FcConfigAcceptFilename (config, dir))
907 /* Skip this directory if already updated
908 * to avoid the looped directories via symlinks
909 * Clearly a dir not in fonts.conf shouldn't be globally cached.
911 dir = (FcChar8 *)FcConfigNormalizeFontDir (config, dir);
915 if (FcStrSetMember (processed_dirs, dir))
917 if (!FcStrSetAdd (processed_dirs, dir))
920 subdirs = FcStrSetCreate ();
923 fprintf (stderr, "Can't create directory set\n");
928 if (access ((char *) dir, X_OK) < 0)
936 fprintf (stderr, "\"%s\": ", dir);
940 FcStrSetDestroy (subdirs);
943 if (stat ((char *) dir, &statb) == -1)
945 fprintf (stderr, "\"%s\": ", dir);
947 FcStrSetDestroy (subdirs);
951 if (!S_ISDIR (statb.st_mode))
953 fprintf (stderr, "\"%s\": not a directory, skipping\n", dir);
954 FcStrSetDestroy (subdirs);
957 if (FcDirCacheValid (dir) &&
958 FcDirCacheHasCurrentArch (dir) &&
959 FcDirCacheRead (set, subdirs, dir, config))
961 /* if an old entry is found in the global cache, disable it */
962 if ((d = FcGlobalCacheDirFind (cache, (const char *)dir)) != NULL)
964 d->state = FcGCDirDisabled;
965 /* save the updated config later without this entry */
966 cache->updated = FcTrue;
971 if (FcDebug () & FC_DBG_FONTSET)
972 printf ("cache scan dir %s\n", dir);
974 FcDirScanConfig (set, subdirs, cache,
975 config->blanks, dir, FcFalse, config);
977 sublist = FcStrListCreate (subdirs);
978 FcStrSetDestroy (subdirs);
981 fprintf (stderr, "Can't create subdir list in \"%s\"\n", dir);
985 ret += FcCacheReadDirs (config, cache, sublist, set, processed_dirs);
987 FcStrListDone (list);
992 FcCacheRead (FcConfig *config, FcGlobalCache * cache)
994 FcFontSet *s = FcFontSetCreate();
995 FcStrSet *processed_dirs;
1000 processed_dirs = FcStrSetCreate();
1001 if (!processed_dirs)
1004 if (FcCacheReadDirs (config, cache, FcConfigGetConfigDirs (config), s, processed_dirs))
1007 FcStrSetDestroy (processed_dirs);
1011 FcStrSetDestroy (processed_dirs);
1013 FcFontSetDestroy (s);
1017 static const char bin2hex[] = { '0', '1', '2', '3',
1020 'c', 'd', 'e', 'f' };
1023 FcDirCacheHashName (char * cache_file, int collisions)
1025 unsigned char hash[16], hex_hash[33];
1027 unsigned char uscore = '_';
1030 struct MD5Context ctx;
1033 MD5Update (&ctx, (unsigned char *)cache_file, strlen (cache_file));
1035 for (i = 0; i < collisions; i++)
1036 MD5Update (&ctx, &uscore, 1);
1038 MD5Final (hash, &ctx);
1040 for (cnt = 0; cnt < 16; ++cnt)
1042 hex_hash[2*cnt] = bin2hex[hash[cnt] >> 4];
1043 hex_hash[2*cnt+1] = bin2hex[hash[cnt] & 0xf];
1047 tmp = FcStrPlus ((FcChar8 *)hex_hash, (FcChar8 *)FC_CACHE_SUFFIX);
1051 cache_hashed = (char *)FcStrPlus ((FcChar8 *)PKGCACHEDIR"/", tmp);
1054 return cache_hashed;
1057 /* Opens the hashed name for cache_file.
1058 * This would fail in the unlikely event of a collision and subsequent
1059 * removal of the file which originally caused the collision. */
1061 FcDirCacheOpen (const FcChar8 *dir)
1064 int fd = -1, collisions = 0;
1065 char *cache_file, *cache_hashed;
1066 char name_buf[FC_MAX_FILE_LEN];
1067 struct stat dir_stat;
1069 if (stat ((char *)dir, &dir_stat) == -1)
1072 cache_file = (char *)FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
1080 FcChar8 *name_buf_dir;
1085 cache_hashed = FcDirCacheHashName (cache_file, collisions++);
1088 FcStrFree ((FcChar8 *)cache_file);
1092 fd = open(cache_hashed, O_RDONLY | O_BINARY);
1093 FcStrFree ((FcChar8 *)cache_hashed);
1097 if (!FcCacheReadString (fd, name_buf, sizeof (name_buf)) ||
1101 name_buf_dir = FcStrDirname ((FcChar8 *)name_buf);
1102 if (stat ((char *)name_buf_dir, &c) == -1)
1104 FcStrFree (name_buf_dir);
1107 FcStrFree (name_buf_dir);
1108 found = (c.st_ino == dir_stat.st_ino) && (c.st_dev == dir_stat.st_dev);
1111 if (!found || fd < 0)
1115 fd = open(cache_file, O_RDONLY | O_BINARY);
1118 FcStrFree ((FcChar8 *)cache_file);
1122 /* read serialized state from the cache file */
1124 FcDirCacheRead (FcFontSet * set, FcStrSet * dirs, const FcChar8 *dir, FcConfig *config)
1127 char *current_arch_machine_name;
1128 char candidate_arch_machine_name[9+MACHINE_SIGNATURE_SIZE];
1129 off_t current_arch_start = 0;
1130 char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1];
1132 fd = FcDirCacheOpen (dir);
1136 current_arch_machine_name = FcCacheMachineSignature();
1137 current_arch_start = FcCacheSkipToArch(fd,
1138 current_arch_machine_name);
1139 if (current_arch_start < 0)
1142 lseek (fd, current_arch_start, SEEK_SET);
1143 if (FcCacheReadString (fd, candidate_arch_machine_name,
1144 sizeof (candidate_arch_machine_name)) == 0)
1147 while (FcCacheReadString (fd, subdirName, sizeof (subdirName)) && strlen (subdirName) > 0)
1148 FcStrSetAdd (dirs, (FcChar8 *)subdirName);
1150 if (!FcDirCacheConsume (fd, (const char *)dir, set, config))
1163 FcDirCacheConsume (int fd, const char * dir, FcFontSet *set, FcConfig *config)
1166 void * current_dir_block;
1169 if (read(fd, &metadata, sizeof(FcCache)) != sizeof(FcCache))
1171 if (metadata.magic != FC_CACHE_MAGIC)
1174 if (!metadata.count)
1176 pos = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR));
1177 lseek (fd, pos, SEEK_SET);
1179 FcConfigAddFontDir (config, (FcChar8 *)dir);
1183 pos = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR));
1184 #if defined(HAVE_MMAP) || defined(__CYGWIN__)
1185 current_dir_block = mmap (0, metadata.count,
1186 PROT_READ, MAP_SHARED, fd, pos);
1187 if (current_dir_block == MAP_FAILED)
1190 current_dir_block = malloc (metadata.count);
1191 if (!current_dir_block)
1194 /* could also use CreateMappedViewOfFile under MinGW... */
1195 if (read (fd, current_dir_block, metadata.count) != metadata.count)
1198 lseek (fd, pos+metadata.count, SEEK_SET);
1200 FcCacheAddBankDir (metadata.bank, dir);
1202 FcConfigAddFontDir (config, (FcChar8 *)dir);
1204 if (!FcFontSetUnserialize (&metadata, set, current_dir_block))
1209 #if !(defined(HAVE_MMAP) || defined(__CYGWIN__))
1210 free (current_dir_block);
1216 FcDirCacheProduce (FcFontSet *set, FcCache *metadata)
1218 void * current_dir_block, * final_dir_block;
1219 static unsigned int rand_state = 0;
1220 int bank, needed_bytes_no_align;
1222 #if defined (HAVE_RAND_R)
1224 rand_state = time(0L);
1225 bank = rand_r(&rand_state);
1227 while (FcCacheHaveBank(bank))
1228 bank = rand_r(&rand_state);
1237 while (FcCacheHaveBank(bank))
1241 memset (metadata, 0, sizeof(FcCache));
1243 needed_bytes_no_align = FcFontSetNeededBytes (set);
1244 metadata->count = needed_bytes_no_align +
1245 FcFontSetNeededBytesAlign ();
1246 metadata->magic = FC_CACHE_MAGIC;
1247 metadata->bank = bank;
1249 if (!needed_bytes_no_align) /* not a failure, no fonts to write */
1251 /* no, you don't really need to write any bytes at all. */
1252 metadata->count = 0;
1256 current_dir_block = malloc (metadata->count);
1257 if (!current_dir_block)
1259 /* shut up valgrind */
1260 memset (current_dir_block, 0, metadata->count);
1261 final_dir_block = FcFontSetDistributeBytes (metadata, current_dir_block);
1263 if ((void *)((char *)current_dir_block+metadata->count) < final_dir_block)
1266 if (!FcFontSetSerialize (bank, set))
1269 return current_dir_block;
1272 free (current_dir_block);
1276 /* write serialized state to the cache file */
1278 FcDirCacheWrite (FcFontSet *set, FcStrSet *dirs, const FcChar8 *dir)
1282 int fd, fd_orig, i, dirs_count;
1285 off_t current_arch_start = 0, truncate_to;
1286 char name_buf[FC_MAX_FILE_LEN];
1289 char *current_arch_machine_name, * header;
1290 void *current_dir_block = 0;
1292 dir = FcConfigNormalizeFontDir (FcConfigGetCurrent(), dir);
1296 cache_file = (char *)FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
1300 /* Ensure that we're not trampling a cache for some other dir. */
1301 /* This is slightly different from FcDirCacheOpen, since it
1302 * needs the filename, not the file descriptor. */
1303 fd = -1; collisions = 0;
1306 cache_hashed = FcDirCacheHashName (cache_file, collisions++);
1312 fd = open(cache_hashed, O_RDONLY | O_BINARY);
1315 if(!FcCacheReadString (fd, name_buf, sizeof (name_buf)) || !strlen(name_buf))
1318 FcStrFree ((FcChar8 *)cache_hashed);
1323 if (strcmp (name_buf, cache_file) != 0)
1325 FcStrFree ((FcChar8 *)cache_hashed);
1332 current_dir_block = FcDirCacheProduce (set, &metadata);
1334 if (metadata.count && !current_dir_block)
1337 if (FcDebug () & FC_DBG_CACHE)
1338 printf ("FcDirCacheWriteDir cache_file \"%s\"\n", cache_file);
1340 atomic = FcAtomicCreate ((FcChar8 *)cache_hashed);
1344 if (!FcAtomicLock (atomic))
1346 /* Now try rewriting the original version of the file. */
1347 FcAtomicDestroy (atomic);
1349 atomic = FcAtomicCreate ((FcChar8 *)cache_file);
1350 fd_orig = open (cache_file, O_RDONLY | O_BINARY);
1352 fd_orig = open((char *)FcAtomicOrigFile (atomic), O_RDONLY | O_BINARY);
1354 fd = open((char *)FcAtomicNewFile (atomic), O_RDWR | O_CREAT | O_BINARY, 0666);
1359 /* In all cases, try opening the real location of the cache file first. */
1360 /* (even if that's not atomic.) */
1361 fd_orig = open (cache_file, O_RDONLY | O_BINARY);
1363 fd_orig = open((char *)FcAtomicOrigFile (atomic), O_RDONLY | O_BINARY);
1365 fd = open((char *)FcAtomicNewFile (atomic), O_RDWR | O_CREAT | O_BINARY, 0666);
1369 FcCacheWriteString (fd, cache_file);
1371 current_arch_machine_name = FcCacheMachineSignature ();
1372 current_arch_start = 0;
1375 current_arch_start =
1376 FcCacheSkipToArch(fd_orig, current_arch_machine_name);
1378 if (current_arch_start < 0)
1380 off_t offset = lseek(fd_orig, 0, SEEK_END);
1381 current_arch_start = FcCacheNextOffset (offset);
1384 if (fd_orig != -1 && !FcCacheCopyOld(fd, fd_orig, current_arch_start))
1390 current_arch_start = lseek(fd, 0, SEEK_CUR);
1391 #if defined (HAVE_FTRUNCATE)
1392 if (ftruncate (fd, current_arch_start) == -1)
1395 #if defined (HAVE_CHSIZE)
1396 if (chsize (fd, current_arch_start) == -1)
1403 /* allocate space for subdir names in this block */
1405 for (i = 0; i < dirs->size; i++)
1406 dirs_count += strlen((char *)dirs->strs[i]) + 1;
1409 /* now write the address of the next offset */
1410 truncate_to = FcCacheNextOffset (FcCacheNextOffset (current_arch_start + sizeof (FcCache) + dirs_count) + metadata.count) - current_arch_start;
1411 header = malloc (10 + strlen (current_arch_machine_name));
1414 sprintf (header, "%8x ", (int)truncate_to);
1415 strcat (header, current_arch_machine_name);
1416 if (!FcCacheWriteString (fd, header))
1419 for (i = 0; i < dirs->size; i++)
1420 FcCacheWriteString (fd, (char *)dirs->strs[i]);
1421 FcCacheWriteString (fd, "");
1423 if (write (fd, &metadata, sizeof(FcCache)) != sizeof(FcCache))
1425 perror("write metadata");
1430 off_t off = FcCacheNextOffset (lseek(fd, 0, SEEK_END));
1431 if (lseek (fd, off, SEEK_SET) != off)
1433 else if (write (fd, current_dir_block, metadata.count) !=
1435 perror("write current_dir_block");
1436 free (current_dir_block);
1437 current_dir_block = 0;
1440 /* this actually serves to pad out the cache file, if needed */
1441 #if defined (HAVE_FTRUNCATE)
1442 if (ftruncate (fd, current_arch_start + truncate_to) == -1)
1445 #if defined (HAVE_CHSIZE)
1446 if (chsize (fd, current_arch_start + truncate_to) == -1)
1455 if (!FcAtomicReplaceOrig(atomic))
1457 FcStrFree ((FcChar8 *)cache_hashed);
1458 FcStrFree ((FcChar8 *)cache_file);
1459 FcAtomicUnlock (atomic);
1460 FcAtomicDestroy (atomic);
1468 FcAtomicUnlock (atomic);
1470 FcAtomicDestroy (atomic);
1472 FcStrFree ((FcChar8 *)cache_hashed);
1474 unlink ((char *)cache_file);
1475 FcStrFree ((FcChar8 *)cache_file);
1476 if (current_dir_block)
1477 free (current_dir_block);
1483 FcCacheMachineSignature ()
1485 static char buf[MACHINE_SIGNATURE_SIZE];
1486 int32_t magic = ENDIAN_TEST;
1487 char * m = (char *)&magic;
1489 sprintf (buf, "%2x%2x%2x%2x "
1490 "%4x %4x %4x %4x %4x %4x %4x %4x %4x %4x %4x %4x "
1491 "%4x %4x %4x %4x %4x %4x %4x %4x\n",
1492 m[0], m[1], m[2], m[3],
1493 (unsigned int)sizeof (char),
1494 (unsigned int)sizeof (char *),
1495 (unsigned int)sizeof (int),
1496 (unsigned int)sizeof (FcPattern),
1497 (unsigned int)sizeof (FcPatternEltPtr),
1498 (unsigned int)sizeof (struct _FcPatternElt *),
1499 (unsigned int)sizeof (FcPatternElt),
1500 (unsigned int)sizeof (FcObjectPtr),
1501 (unsigned int)sizeof (FcValueListPtr),
1502 (unsigned int)sizeof (FcValue),
1503 (unsigned int)sizeof (FcValueBinding),
1504 (unsigned int)sizeof (struct _FcValueList *),
1505 (unsigned int)sizeof (FcCharSet),
1506 (unsigned int)sizeof (FcCharLeaf **),
1507 (unsigned int)sizeof (FcChar16 *),
1508 (unsigned int)sizeof (FcChar16),
1509 (unsigned int)sizeof (FcCharLeaf),
1510 (unsigned int)sizeof (FcChar32),
1511 (unsigned int)sizeof (FcCache),
1512 #if defined (HAVE_SYSCONF)
1513 (unsigned int)sysconf(_SC_PAGESIZE));
1515 (unsigned int)FC_HARDCODED_PAGESIZE);
1521 static int banks_ptr = 0, banks_alloc = 0;
1522 int * _fcBankId = 0, * _fcBankIdx = 0;
1523 static const char ** bankDirs = 0;
1526 FcCacheHaveBank (int bank)
1530 if (bank < FC_BANK_FIRST)
1533 for (i = 0; i < banks_ptr; i++)
1534 if (_fcBankId[i] == bank)
1541 FcCacheBankToIndexMTF (int bank)
1545 for (i = 0; i < banks_ptr; i++)
1546 if (_fcBankId[_fcBankIdx[i]] == bank)
1548 int t = _fcBankIdx[i];
1550 for (j = i; j > 0; j--)
1551 _fcBankIdx[j] = _fcBankIdx[j-1];
1556 if (banks_ptr >= banks_alloc)
1561 b = realloc (_fcBankId, (banks_alloc + 4) * sizeof(int));
1566 bidx = realloc (_fcBankIdx, (banks_alloc + 4) * sizeof(int));
1571 bds = realloc (bankDirs, (banks_alloc + 4) * sizeof (char *));
1580 _fcBankId[i] = bank;
1586 FcCacheAddBankDir (int bank, const char * dir)
1588 int bi = FcCacheBankToIndexMTF (bank);
1593 bankDirs[bi] = (const char *)FcStrCopy ((FcChar8 *)dir);
1597 FcCacheFindBankDir (int bank)
1599 int bi = FcCacheBankToIndex (bank);
1600 return bankDirs[bi];
1604 * This code implements the MD5 message-digest algorithm.
1605 * The algorithm is due to Ron Rivest. This code was
1606 * written by Colin Plumb in 1993, no copyright is claimed.
1607 * This code is in the public domain; do with it what you wish.
1609 * Equivalent code is available from RSA Data Security, Inc.
1610 * This code has been tested against that, and is equivalent,
1611 * except that you don't need to include two pages of legalese
1614 * To compute the message digest of a chunk of bytes, declare an
1615 * MD5Context structure, pass it to MD5Init, call MD5Update as
1616 * needed on buffers full of bytes, and then call MD5Final, which
1617 * will fill a supplied 16-byte array with the digest.
1621 #define byteReverse(buf, len) /* Nothing */
1624 * Note: this code is harmless on little-endian machines.
1626 void byteReverse(unsigned char *buf, unsigned longs)
1630 t = (FcChar32) ((unsigned) buf[3] << 8 | buf[2]) << 16 |
1631 ((unsigned) buf[1] << 8 | buf[0]);
1632 *(FcChar32 *) buf = t;
1639 * Start MD5 accumulation. Set bit count to 0 and buffer to mysterious
1640 * initialization constants.
1642 static void MD5Init(struct MD5Context *ctx)
1644 ctx->buf[0] = 0x67452301;
1645 ctx->buf[1] = 0xefcdab89;
1646 ctx->buf[2] = 0x98badcfe;
1647 ctx->buf[3] = 0x10325476;
1654 * Update context to reflect the concatenation of another buffer full
1657 static void MD5Update(struct MD5Context *ctx, unsigned char *buf, unsigned len)
1661 /* Update bitcount */
1664 if ((ctx->bits[0] = t + ((FcChar32) len << 3)) < t)
1665 ctx->bits[1]++; /* Carry from low to high */
1666 ctx->bits[1] += len >> 29;
1668 t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data */
1670 /* Handle any leading odd-sized chunks */
1673 unsigned char *p = (unsigned char *) ctx->in + t;
1677 memcpy(p, buf, len);
1681 byteReverse(ctx->in, 16);
1682 MD5Transform(ctx->buf, (FcChar32 *) ctx->in);
1686 /* Process data in 64-byte chunks */
1689 memcpy(ctx->in, buf, 64);
1690 byteReverse(ctx->in, 16);
1691 MD5Transform(ctx->buf, (FcChar32 *) ctx->in);
1696 /* Handle any remaining bytes of data. */
1698 memcpy(ctx->in, buf, len);
1702 * Final wrapup - pad to 64-byte boundary with the bit pattern
1703 * 1 0* (64-bit count of bits processed, MSB-first)
1705 static void MD5Final(unsigned char digest[16], struct MD5Context *ctx)
1710 /* Compute number of bytes mod 64 */
1711 count = (ctx->bits[0] >> 3) & 0x3F;
1713 /* Set the first char of padding to 0x80. This is safe since there is
1714 always at least one byte free */
1715 p = ctx->in + count;
1718 /* Bytes of padding needed to make 64 bytes */
1719 count = 64 - 1 - count;
1721 /* Pad out to 56 mod 64 */
1723 /* Two lots of padding: Pad the first block to 64 bytes */
1724 memset(p, 0, count);
1725 byteReverse(ctx->in, 16);
1726 MD5Transform(ctx->buf, (FcChar32 *) ctx->in);
1728 /* Now fill the next block with 56 bytes */
1729 memset(ctx->in, 0, 56);
1731 /* Pad block to 56 bytes */
1732 memset(p, 0, count - 8);
1734 byteReverse(ctx->in, 14);
1736 /* Append length in bits and transform */
1737 ((FcChar32 *) ctx->in)[14] = ctx->bits[0];
1738 ((FcChar32 *) ctx->in)[15] = ctx->bits[1];
1740 MD5Transform(ctx->buf, (FcChar32 *) ctx->in);
1741 byteReverse((unsigned char *) ctx->buf, 4);
1742 memcpy(digest, ctx->buf, 16);
1743 memset(ctx, 0, sizeof(ctx)); /* In case it's sensitive */
1747 /* The four core functions - F1 is optimized somewhat */
1749 /* #define F1(x, y, z) (x & y | ~x & z) */
1750 #define F1(x, y, z) (z ^ (x & (y ^ z)))
1751 #define F2(x, y, z) F1(z, x, y)
1752 #define F3(x, y, z) (x ^ y ^ z)
1753 #define F4(x, y, z) (y ^ (x | ~z))
1755 /* This is the central step in the MD5 algorithm. */
1756 #define MD5STEP(f, w, x, y, z, data, s) \
1757 ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x )
1760 * The core of the MD5 algorithm, this alters an existing MD5 hash to
1761 * reflect the addition of 16 longwords of new data. MD5Update blocks
1762 * the data and converts bytes into longwords for this routine.
1764 static void MD5Transform(FcChar32 buf[4], FcChar32 in[16])
1766 register FcChar32 a, b, c, d;
1773 MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
1774 MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
1775 MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
1776 MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
1777 MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
1778 MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
1779 MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
1780 MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
1781 MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
1782 MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
1783 MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
1784 MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
1785 MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
1786 MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
1787 MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
1788 MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);
1790 MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);
1791 MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);
1792 MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
1793 MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
1794 MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);
1795 MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
1796 MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
1797 MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
1798 MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
1799 MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
1800 MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
1801 MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);
1802 MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
1803 MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
1804 MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);
1805 MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
1807 MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);
1808 MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);
1809 MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
1810 MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
1811 MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);
1812 MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
1813 MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
1814 MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
1815 MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
1816 MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
1817 MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
1818 MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);
1819 MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
1820 MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
1821 MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
1822 MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
1824 MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);
1825 MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);
1826 MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
1827 MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);
1828 MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
1829 MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
1830 MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
1831 MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
1832 MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
1833 MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
1834 MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
1835 MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
1836 MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
1837 MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
1838 MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
1839 MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);