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/types.h>
31 #if defined(HAVE_MMAP) || defined(__CYGWIN__)
33 # include <sys/mman.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 (FcConfig *config, const FcChar8 *dir, FcChar8 **cache_path);
51 FcCacheSkipToArch (int fd, const char * arch);
54 FcCacheCopyOld (int fd, int fd_orig, off_t start);
57 FcDirCacheProduce (FcFontSet *set, FcCache * metadata);
60 FcDirCacheConsume (int fd, const char * dir, FcFontSet *set, FcConfig *config);
63 FcCacheNextOffset(off_t w);
66 FcCacheMachineSignature (void);
69 FcCacheHaveBank (int bank);
72 FcCacheAddBankDir (int bank, const char * dir);
80 static void MD5Init(struct MD5Context *ctx);
81 static void MD5Update(struct MD5Context *ctx, unsigned char *buf, unsigned len);
82 static void MD5Final(unsigned char digest[16], struct MD5Context *ctx);
83 static void MD5Transform(FcChar32 buf[4], FcChar32 in[16]);
85 #define FC_DBG_CACHE_REF 1024
88 FcCacheReadString (int fd, char *dest, int len)
96 size = read (fd, dest, len-1);
101 slen = strlen (dest);
103 lseek (fd, slen - size + 1, SEEK_CUR);
104 return slen < len ? dest : 0;
111 FcCacheSkipString (int fd)
117 while ( (size = read (fd, buf, sizeof (buf)-1)) > 0)
123 lseek (fd, slen - size + 1, SEEK_CUR);
130 FcCacheWriteString (int fd, const char *chars)
132 if (write (fd, chars, strlen(chars)+1) != strlen(chars)+1)
138 FcGlobalCacheDirDestroy (FcGlobalCacheDir *d)
140 FcStrSetDestroy (d->subdirs);
141 FcMemFree (FC_MEM_STRING, strlen (d->name)+1);
143 FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCacheDir));
148 FcGlobalCacheCreate (void)
150 FcGlobalCache *cache;
152 cache = malloc (sizeof (FcGlobalCache));
155 FcMemAlloc (FC_MEM_CACHE, sizeof (FcGlobalCache));
157 cache->updated = FcFalse;
163 FcGlobalCacheDestroy (FcGlobalCache *cache)
165 FcGlobalCacheDir *d, *next;
167 for (d = cache->dirs; d; d = next)
170 FcGlobalCacheDirDestroy (d);
172 FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCache));
179 FcGlobalCacheLoad (FcGlobalCache *cache,
181 const FcChar8 *cache_file,
184 char name_buf[FC_MAX_FILE_LEN];
185 FcGlobalCacheDir *d, *next;
186 FcFileTime config_time = FcConfigModifiedTime (config);
187 char * current_arch_machine_name;
188 char candidate_arch_machine_name[MACHINE_SIGNATURE_SIZE + 9];
189 off_t current_arch_start;
191 struct stat cache_stat, dir_stat;
192 char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1];
194 if (stat ((char *) cache_file, &cache_stat) < 0)
197 cache->fd = open ((char *) cache_file, O_RDONLY | O_BINARY);
201 cache->updated = FcFalse;
203 if (!FcCacheReadString (cache->fd, name_buf, sizeof (name_buf)))
204 goto bail_and_destroy;
205 if (strcmp (name_buf, FC_GLOBAL_MAGIC_COOKIE) != 0)
206 goto bail_and_destroy;
208 current_arch_machine_name = FcCacheMachineSignature ();
209 current_arch_start = FcCacheSkipToArch(cache->fd,
210 current_arch_machine_name);
211 if (current_arch_start < 0)
214 lseek (cache->fd, current_arch_start, SEEK_SET);
215 if (!FcCacheReadString (cache->fd, candidate_arch_machine_name,
216 sizeof (candidate_arch_machine_name)))
217 goto bail_and_destroy;
218 if (strlen(candidate_arch_machine_name) == 0)
219 goto bail_and_destroy;
225 if (!FcCacheReadString (cache->fd, name_buf, sizeof (name_buf)) ||
229 /* Directory must be older than the global cache file; also
230 cache must be newer than the config file. */
231 if (stat ((char *) name_buf, &dir_stat) < 0 ||
232 dir_stat.st_mtime > cache_stat.st_mtime ||
233 (config_time.set && cache_stat.st_mtime < config_time.time))
238 FcStrSetAdd (staleDirs, (FcChar8 *)name_buf);
241 while (FcCacheReadString (cache->fd, subdirName,
242 sizeof (subdirName)) &&
246 if (read (cache->fd, &md, sizeof (FcCache)) != sizeof(FcCache))
248 perror ("read metadata");
251 off = FcCacheNextOffset (lseek(cache->fd, 0, SEEK_CUR)) + md.count;
252 if (lseek (cache->fd, off, SEEK_SET) != off)
260 d = malloc (sizeof (FcGlobalCacheDir));
264 d->next = cache->dirs;
267 d->name = (char *)FcStrCopy ((FcChar8 *)name_buf);
269 d->state = FcGCDirFileRead;
271 d->subdirs = FcStrSetCreate();
274 if (!FcCacheReadString (cache->fd, subdirName,
275 sizeof (subdirName)) ||
276 !strlen (subdirName))
278 FcStrSetAdd (d->subdirs, (FcChar8 *)subdirName);
281 d->offset = lseek (cache->fd, 0, SEEK_CUR);
282 if (read (cache->fd, &d->metadata, sizeof (FcCache)) != sizeof (FcCache))
284 targ = FcCacheNextOffset (lseek(cache->fd, 0, SEEK_CUR)) + d->metadata.count;
285 if (lseek (cache->fd, targ, SEEK_SET) != targ)
291 for (d = cache->dirs; d; d = next)
306 if (stat ((char *) cache_file, &cache_stat) == 0)
307 unlink ((char *)cache_file);
314 FcGlobalCacheReadDir (FcFontSet *set, FcStrSet *dirs, FcGlobalCache * cache, const char *dir, FcConfig *config)
323 if (!(dir = (char *)FcConfigNormalizeFontDir (config, (FcChar8 *)dir)))
324 return FcFalse; /* non-existing directory */
326 for (d = cache->dirs; d; d = d->next)
328 if (strcmp (d->name, dir) == 0)
330 if (d->state == FcGCDirDisabled)
333 if (d->state == FcGCDirFileRead)
335 lseek (cache->fd, d->offset, SEEK_SET);
336 if (!FcDirCacheConsume (cache->fd, d->name, set, config))
339 for (i = 0; i < d->subdirs->num; i++)
340 FcStrSetAdd (dirs, (FcChar8 *)d->subdirs->strs[i]);
342 d->state = FcGCDirConsumed;
351 static FcGlobalCacheDir *
352 FcGlobalCacheDirFind (FcGlobalCache *cache, const char *name)
354 FcGlobalCacheDir * d;
359 for (d = cache->dirs; d; d = d->next)
360 if (strcmp((const char *)d->name, (const char *)name) == 0)
367 FcGlobalCacheUpdate (FcGlobalCache *cache,
369 const char *orig_name,
377 name = (char *)FcConfigNormalizeFontDir (config, (FcChar8 *)orig_name);
380 fprintf(stderr, "Invalid directory name %s\n", orig_name);
384 d = FcGlobalCacheDirFind (cache, name);
388 d = malloc (sizeof (FcGlobalCacheDir));
391 d->next = cache->dirs;
394 /* free old resources */
395 FcStrFree ((FcChar8 *)d->name);
397 FcStrSetDestroy (d->subdirs);
400 cache->updated = FcTrue;
402 d->name = (char *)FcStrCopy ((FcChar8 *)name);
403 d->ent = FcDirCacheProduce (set, &d->metadata);
405 d->subdirs = FcStrSetCreate();
406 d->state = FcGCDirUpdated;
407 for (i = 0; i < dirs->num; i++)
408 FcStrSetAdd (d->subdirs, dirs->strs[i]);
413 FcGlobalCacheSave (FcGlobalCache *cache,
414 const FcChar8 *cache_file,
418 FcGlobalCacheDir *dir;
420 off_t current_arch_start = 0, truncate_to;
421 char * current_arch_machine_name, * header;
426 #if defined (HAVE_GETUID) && defined (HAVE_GETEUID)
427 /* Set-UID programs can't safely update the cache */
428 if (getuid () != geteuid ())
432 atomic = FcAtomicCreate (cache_file);
436 if (!FcAtomicLock (atomic))
438 fd = open ((char *) FcAtomicNewFile(atomic), O_RDWR | O_CREAT | O_BINARY,
442 FcCacheWriteString (fd, FC_GLOBAL_MAGIC_COOKIE);
444 fd_orig = open ((char *) FcAtomicOrigFile(atomic), O_RDONLY | O_BINARY);
446 current_arch_machine_name = FcCacheMachineSignature ();
448 current_arch_start = 0;
450 current_arch_start = FcCacheSkipToArch (fd_orig,
451 current_arch_machine_name);
453 if (current_arch_start < 0)
455 off_t i = lseek(fd_orig, 0, SEEK_END);
456 if (i < strlen (FC_GLOBAL_MAGIC_COOKIE)+1)
457 i = strlen (FC_GLOBAL_MAGIC_COOKIE)+1;
458 current_arch_start = FcCacheNextOffset (i);
461 if (!FcCacheCopyOld(fd, fd_orig, current_arch_start))
464 current_arch_start = lseek(fd, 0, SEEK_CUR);
465 #if defined (HAVE_FTRUNCATE)
466 if (ftruncate (fd, current_arch_start) == -1)
469 #if defined (HAVE_CHSIZE)
470 if (chsize (fd, current_arch_start) == -1)
477 header = malloc (10 + strlen (current_arch_machine_name));
481 truncate_to = current_arch_start + strlen(current_arch_machine_name) + 11;
482 for (dir = cache->dirs; dir; dir = dir->next)
486 if (dir->state == FcGCDirDisabled)
488 truncate_to += strlen(dir->name) + 1;
489 truncate_to += sizeof (FcCache);
490 truncate_to = FcCacheNextOffset (truncate_to);
491 truncate_to += dir->metadata.count;
493 for (i = 0; i < dir->subdirs->size; i++)
494 truncate_to += strlen((char *)dir->subdirs->strs[i]) + 1;
497 truncate_to -= current_arch_start;
499 sprintf (header, "%8x ", (int)truncate_to);
500 strcat (header, current_arch_machine_name);
501 if (!FcCacheWriteString (fd, header))
506 for (dir = cache->dirs; dir; dir = dir->next)
512 if (!dir->name || dir->state == FcGCDirDisabled)
514 d = (const char *)FcConfigNormalizeFontDir (config, (const FcChar8 *)dir->name);
518 if (dir->metadata.count && !dir->ent)
520 if (dir->state == FcGCDirUpdated || fd_orig < 0)
522 fprintf(stderr, "Invalid metadata entry for %s, skipping...\n", d);
525 /* copy the old content */
526 dir->ent = malloc (dir->metadata.count);
529 perror("malloc error");
532 off = FcCacheNextOffset (dir->offset + sizeof(FcCache));
533 if (lseek (fd_orig, off, SEEK_SET) != off)
539 if (read (fd_orig, dir->ent, dir->metadata.count)
540 != dir->metadata.count)
548 FcCacheWriteString (fd, d);
550 for (i = 0; i < dir->subdirs->size; i++)
551 FcCacheWriteString (fd, (char *)dir->subdirs->strs[i]);
552 FcCacheWriteString (fd, "");
554 if (write (fd, &dir->metadata, sizeof(FcCache)) != sizeof(FcCache))
556 perror ("write metadata");
560 off = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR));
561 if (lseek (fd, off, SEEK_SET) != off)
567 if (dir->metadata.count)
569 if (write (fd, dir->ent, dir->metadata.count) != dir->metadata.count)
571 perror ("write dirent");
578 FcCacheWriteString (fd, "");
580 if (close (fd) == -1)
586 if (!FcAtomicReplaceOrig (atomic))
589 FcAtomicUnlock (atomic);
590 FcAtomicDestroy (atomic);
592 cache->updated = FcFalse;
603 FcAtomicDeleteNew (atomic);
605 FcAtomicUnlock (atomic);
607 FcAtomicDestroy (atomic);
612 * Find the next presumably-mmapable offset after the supplied file
616 FcCacheNextOffset(off_t w)
618 static long pagesize = -1;
624 #if defined (HAVE_SYSCONF)
625 pagesize = sysconf(_SC_PAGESIZE);
627 pagesize = FC_HARDCODED_PAGESIZE;
629 if (w % pagesize == 0)
632 return ((w / pagesize)+1)*pagesize;
635 /* return the address of the segment for the provided arch,
636 * or -1 if arch not found */
638 FcCacheSkipToArch (int fd, const char * arch)
640 char candidate_arch_machine_name_count[MACHINE_SIGNATURE_SIZE + 9];
641 char * candidate_arch;
642 off_t current_arch_start = 0;
644 lseek (fd, 0, SEEK_SET);
645 FcCacheSkipString (fd);
646 current_arch_start = lseek (fd, 0, SEEK_CUR);
648 /* skip arches that are not the current arch */
653 if (lseek (fd, current_arch_start, SEEK_SET) != current_arch_start)
656 if (FcCacheReadString (fd, candidate_arch_machine_name_count,
657 sizeof (candidate_arch_machine_name_count)) == 0)
659 if (!strlen(candidate_arch_machine_name_count))
661 bs = strtol(candidate_arch_machine_name_count, &candidate_arch, 16);
663 /* count = 0 should probably be distinguished from the !bs condition */
664 if (!bs || bs < strlen (candidate_arch_machine_name_count))
667 candidate_arch++; /* skip leading space */
669 if (strcmp (candidate_arch, arch)==0)
670 return current_arch_start;
671 current_arch_start += bs;
672 current_arch_start = FcCacheNextOffset (current_arch_start);
676 /* Cuts out the segment at the file pointer (moves everything else
677 * down to cover it), and leaves the file pointer at the end of the
680 FcCacheCopyOld (int fd, int fd_orig, off_t start)
682 char * buf = malloc (8192);
683 char candidate_arch_machine_name[MACHINE_SIGNATURE_SIZE + 9];
685 int c, bytes_skipped;
692 lseek (fd, 0, SEEK_SET); lseek (fd_orig, 0, SEEK_SET);
693 FcCacheSkipString (fd); FcCacheSkipString (fd_orig);
700 if ((c = read (fd_orig, buf, b)) <= 0)
702 if (write (fd, buf, c) < 0)
709 lseek (fd, start, SEEK_SET);
710 if (FcCacheReadString (fd, candidate_arch_machine_name,
711 sizeof (candidate_arch_machine_name)) == 0)
713 if (!strlen(candidate_arch_machine_name))
716 bs = strtol(candidate_arch_machine_name, 0, 16);
723 lseek (fd, start+bs+bytes_skipped, SEEK_SET);
724 if ((c = read (fd, buf, 8192)) <= 0)
726 lseek (fd, start+bytes_skipped, SEEK_SET);
727 if (write (fd, buf, c) < 0)
732 lseek (fd, start+bytes_skipped, SEEK_SET);
743 /* Does not check that the cache has the appropriate arch section. */
745 FcDirCacheValid (const FcChar8 *dir, FcConfig *config)
749 fd = FcDirCacheOpen (config, dir, NULL);
758 /* Assumes that the cache file in 'dir' exists.
759 * Checks that the cache has the appropriate arch section. */
761 FcDirCacheHasCurrentArch (const FcChar8 *dir, FcConfig *config)
764 off_t current_arch_start;
765 char *current_arch_machine_name;
767 char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1];
769 fd = FcDirCacheOpen (config, dir, NULL);
773 current_arch_machine_name = FcCacheMachineSignature();
774 current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name);
776 if (current_arch_start >= 0)
778 if (lseek (fd, current_arch_start, SEEK_SET) != current_arch_start)
781 FcCacheSkipString (fd);
783 while (FcCacheReadString (fd, subdirName, sizeof (subdirName)) && strlen (subdirName) > 0)
786 if (read(fd, &metadata, sizeof(FcCache)) != sizeof(FcCache))
789 if (metadata.magic != FC_CACHE_MAGIC)
795 if (current_arch_start < 0)
806 #define CACHEBASE_LEN (1 + 32 + sizeof (FC_CACHE_SUFFIX))
808 static const char bin2hex[] = { '0', '1', '2', '3',
811 'c', 'd', 'e', 'f' };
814 FcDirCacheBasename (const FcChar8 * dir, FcChar8 cache_base[CACHEBASE_LEN])
816 unsigned char hash[16];
819 struct MD5Context ctx;
822 MD5Update (&ctx, (unsigned char *)dir, strlen ((char *) dir));
824 MD5Final (hash, &ctx);
827 hex_hash = cache_base + 1;
828 for (cnt = 0; cnt < 16; ++cnt)
830 hex_hash[2*cnt ] = bin2hex[hash[cnt] >> 4];
831 hex_hash[2*cnt+1] = bin2hex[hash[cnt] & 0xf];
834 strcat ((char *) cache_base, FC_CACHE_SUFFIX);
840 FcDirCacheUnlink (const FcChar8 *dir, FcConfig *config)
843 FcChar8 *cache_hashed = NULL;
844 FcChar8 cache_base[CACHEBASE_LEN];
847 char dir_buf[FC_MAX_FILE_LEN];
849 dir = FcConfigNormalizeFontDir (config, dir);
851 FcDirCacheBasename (dir, cache_base);
853 list = FcStrListCreate (config->cacheDirs);
857 while ((cache_dir = FcStrListNext (list)))
859 cache_hashed = FcStrPlus (cache_dir, cache_base);
862 fd = open((char *) cache_hashed, O_RDONLY | O_BINARY);
863 FcStrFree (cache_hashed);
866 if (FcCacheReadString (fd, dir_buf, sizeof (dir_buf)) &&
867 strcmp (dir_buf, (char *) dir) == 0)
870 if (unlink ((char *) cache_hashed) < 0)
876 FcStrListDone (list);
877 /* return FcFalse if something went wrong */
884 FcCacheReadDirs (FcConfig * config, FcGlobalCache * cache,
885 FcStrList *list, FcFontSet * set, FcStrSet *processed_dirs)
895 * Read in the results from 'list'.
897 while ((dir = FcStrListNext (list)))
899 if (!FcConfigAcceptFilename (config, dir))
902 /* Skip this directory if already updated
903 * to avoid the looped directories via symlinks
904 * Clearly a dir not in fonts.conf shouldn't be globally cached.
906 dir = (FcChar8 *)FcConfigNormalizeFontDir (config, dir);
910 if (FcStrSetMember (processed_dirs, dir))
912 if (!FcStrSetAdd (processed_dirs, dir))
915 subdirs = FcStrSetCreate ();
918 fprintf (stderr, "Can't create directory set\n");
923 if (access ((char *) dir, X_OK) < 0)
931 fprintf (stderr, "\"%s\": ", dir);
935 FcStrSetDestroy (subdirs);
938 if (stat ((char *) dir, &statb) == -1)
940 fprintf (stderr, "\"%s\": ", dir);
942 FcStrSetDestroy (subdirs);
946 if (!S_ISDIR (statb.st_mode))
948 fprintf (stderr, "\"%s\": not a directory, skipping\n", dir);
949 FcStrSetDestroy (subdirs);
952 if (FcDirCacheRead (set, subdirs, dir, config))
954 /* if an old entry is found in the global cache, disable it */
955 if ((d = FcGlobalCacheDirFind (cache, (const char *)dir)) != NULL)
957 d->state = FcGCDirDisabled;
958 /* save the updated config later without this entry */
959 cache->updated = FcTrue;
964 if (FcDebug () & FC_DBG_FONTSET)
965 printf ("cache scan dir %s\n", dir);
967 FcDirScanConfig (set, subdirs, cache,
968 config->blanks, dir, FcFalse, config);
970 sublist = FcStrListCreate (subdirs);
971 FcStrSetDestroy (subdirs);
974 fprintf (stderr, "Can't create subdir list in \"%s\"\n", dir);
978 ret += FcCacheReadDirs (config, cache, sublist, set, processed_dirs);
980 FcStrListDone (list);
985 FcCacheRead (FcConfig *config, FcGlobalCache * cache)
987 FcFontSet *s = FcFontSetCreate();
988 FcStrSet *processed_dirs;
993 processed_dirs = FcStrSetCreate();
997 if (FcCacheReadDirs (config, cache, FcConfigGetConfigDirs (config), s, processed_dirs))
1000 FcStrSetDestroy (processed_dirs);
1004 FcStrSetDestroy (processed_dirs);
1006 FcFontSetDestroy (s);
1010 /* Opens the cache file for 'dir' for reading.
1011 * This searches the list of cache dirs for the relevant cache file,
1012 * returning the first one found.
1015 FcDirCacheOpen (FcConfig *config, const FcChar8 *dir, FcChar8 **cache_path)
1018 FcChar8 *cache_hashed = NULL;
1019 FcChar8 cache_base[CACHEBASE_LEN];
1022 char dir_buf[FC_MAX_FILE_LEN];
1023 struct stat file_stat, dir_stat;
1025 if (stat ((char *) dir, &dir_stat) < 0)
1028 FcDirCacheBasename (dir, cache_base);
1030 list = FcStrListCreate (config->cacheDirs);
1034 while ((cache_dir = FcStrListNext (list)))
1036 cache_hashed = FcStrPlus (cache_dir, cache_base);
1039 fd = open((char *) cache_hashed, O_RDONLY | O_BINARY);
1041 if (fstat (fd, &file_stat) >= 0 &&
1042 dir_stat.st_mtime <= file_stat.st_mtime)
1049 FcStrFree (cache_hashed);
1050 cache_hashed = NULL;
1052 FcStrListDone (list);
1057 if (!FcCacheReadString (fd, dir_buf, sizeof (dir_buf)) ||
1058 strcmp (dir_buf, (char *) dir) != 0)
1061 FcStrFree (cache_hashed);
1066 *cache_path = cache_hashed;
1068 FcStrFree (cache_hashed);
1073 /* read serialized state from the cache file */
1075 FcDirCacheRead (FcFontSet * set, FcStrSet * dirs, const FcChar8 *dir, FcConfig *config)
1078 char *current_arch_machine_name;
1079 char candidate_arch_machine_name[9+MACHINE_SIGNATURE_SIZE];
1080 off_t current_arch_start = 0;
1081 char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1];
1083 fd = FcDirCacheOpen (config, dir, NULL);
1087 current_arch_machine_name = FcCacheMachineSignature();
1088 current_arch_start = FcCacheSkipToArch(fd,
1089 current_arch_machine_name);
1090 if (current_arch_start < 0)
1093 lseek (fd, current_arch_start, SEEK_SET);
1094 if (FcCacheReadString (fd, candidate_arch_machine_name,
1095 sizeof (candidate_arch_machine_name)) == 0)
1098 while (FcCacheReadString (fd, subdirName, sizeof (subdirName)) && strlen (subdirName) > 0)
1099 FcStrSetAdd (dirs, (FcChar8 *)subdirName);
1101 if (!FcDirCacheConsume (fd, (const char *)dir, set, config))
1114 FcDirCacheConsume (int fd, const char * dir, FcFontSet *set, FcConfig *config)
1117 void * current_dir_block;
1120 if (read(fd, &metadata, sizeof(FcCache)) != sizeof(FcCache))
1122 if (metadata.magic != FC_CACHE_MAGIC)
1125 if (!metadata.count)
1127 pos = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR));
1128 lseek (fd, pos, SEEK_SET);
1130 FcConfigAddFontDir (config, (FcChar8 *)dir);
1134 pos = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR));
1136 /* This is not failsafe (multi-arches can break it),
1137 * but fd has got to have at least as many bytes as
1138 * metadata.count, or something's going to go horribly wrong. */
1139 if (pos == (off_t)-1)
1142 endpos = lseek (fd, 0, SEEK_END);
1143 if (endpos == (off_t)-1 || endpos - pos < metadata.count)
1145 if (lseek (fd, pos, SEEK_SET) == -1)
1148 #if defined(HAVE_MMAP) || defined(__CYGWIN__)
1149 current_dir_block = mmap (0, metadata.count,
1150 PROT_READ, MAP_SHARED, fd, pos);
1151 if (current_dir_block == MAP_FAILED)
1153 #elif defined(_WIN32)
1157 hFileMap = CreateFileMapping((HANDLE) _get_osfhandle(fd), NULL, PAGE_READONLY, 0, 0, NULL);
1158 if (hFileMap == NULL)
1161 current_dir_block = MapViewOfFile (hFileMap, FILE_MAP_READ, 0, 0, metadata.count + pos);
1162 if (current_dir_block == NULL)
1164 CloseHandle (hFileMap);
1168 current_dir_block = (void *)((char *)current_dir_block + pos);
1171 current_dir_block = malloc (metadata.count);
1172 if (!current_dir_block)
1175 /* could also use CreateMappedViewOfFile under MinGW... */
1176 if (read (fd, current_dir_block, metadata.count) != metadata.count)
1179 lseek (fd, pos+metadata.count, SEEK_SET);
1181 FcCacheAddBankDir (metadata.bank, dir);
1183 FcConfigAddFontDir (config, (FcChar8 *)dir);
1185 if (!FcFontSetUnserialize (&metadata, set, current_dir_block))
1190 #if !(defined(HAVE_MMAP) || defined(__CYGWIN__))
1191 free (current_dir_block);
1197 FcDirCacheProduce (FcFontSet *set, FcCache *metadata)
1199 void * current_dir_block, * final_dir_block;
1200 static unsigned int rand_state = 0;
1201 int bank, needed_bytes_no_align;
1203 #if defined (HAVE_RAND_R)
1205 rand_state = time(0L);
1206 bank = rand_r(&rand_state);
1208 while (FcCacheHaveBank(bank))
1209 bank = rand_r(&rand_state);
1218 while (FcCacheHaveBank(bank))
1222 memset (metadata, 0, sizeof(FcCache));
1224 needed_bytes_no_align = FcFontSetNeededBytes (set);
1225 metadata->count = needed_bytes_no_align +
1226 FcFontSetNeededBytesAlign ();
1227 metadata->magic = FC_CACHE_MAGIC;
1228 metadata->bank = bank;
1230 if (!needed_bytes_no_align) /* not a failure, no fonts to write */
1232 /* no, you don't really need to write any bytes at all. */
1233 metadata->count = 0;
1237 current_dir_block = malloc (metadata->count);
1238 if (!current_dir_block)
1240 /* shut up valgrind */
1241 memset (current_dir_block, 0, metadata->count);
1242 final_dir_block = FcFontSetDistributeBytes (metadata, current_dir_block);
1244 if ((void *)((char *)current_dir_block+metadata->count) < final_dir_block)
1247 if (!FcFontSetSerialize (bank, set))
1250 return current_dir_block;
1253 free (current_dir_block);
1258 FcMakeDirectory (const FcChar8 *dir)
1263 if (strlen ((char *) dir) == 0)
1266 parent = FcStrDirname (dir);
1269 if (access ((char *) parent, W_OK|X_OK) == 0)
1270 ret = mkdir ((char *) dir, 0777) == 0;
1271 else if (access ((char *) parent, F_OK) == -1)
1272 ret = FcMakeDirectory (parent) && (mkdir ((char *) dir, 0777) == 0);
1279 /* write serialized state to the cache file */
1281 FcDirCacheWrite (FcFontSet *set, FcStrSet *dirs, const FcChar8 *dir, FcConfig *config)
1283 FcChar8 cache_base[CACHEBASE_LEN];
1284 FcChar8 *cache_hashed;
1285 int fd, fd_orig, i, dirs_count;
1288 off_t current_arch_start = 0, truncate_to;
1290 char *current_arch_machine_name, * header;
1291 void *current_dir_block = 0;
1292 FcChar8 *cache_dir = NULL;
1295 dir = FcConfigNormalizeFontDir (FcConfigGetCurrent(), dir);
1300 * Write it to the first directory in the list which is writable
1303 list = FcStrListCreate (config->cacheDirs);
1306 while ((test_dir = FcStrListNext (list))) {
1307 if (access ((char *) test_dir, W_OK|X_OK) == 0)
1309 cache_dir = test_dir;
1315 * If the directory doesn't exist, try to create it
1317 if (access ((char *) test_dir, F_OK) == -1) {
1318 if (FcMakeDirectory (test_dir))
1320 cache_dir = test_dir;
1326 FcStrListDone (list);
1329 FcDirCacheBasename (dir, cache_base);
1330 cache_hashed = FcStrPlus (cache_dir, cache_base);
1334 current_dir_block = FcDirCacheProduce (set, &metadata);
1336 if (metadata.count && !current_dir_block)
1339 if (FcDebug () & FC_DBG_CACHE)
1340 printf ("FcDirCacheWriteDir dir \"%s\" file \"%s\"\n",
1343 atomic = FcAtomicCreate ((FcChar8 *)cache_hashed);
1347 if (!FcAtomicLock (atomic))
1350 /* open the original file to save relevant portions */
1351 fd_orig = open((char *)FcAtomicOrigFile (atomic), O_RDONLY | O_BINARY);
1353 fd = open((char *)FcAtomicNewFile (atomic), O_RDWR | O_CREAT | O_BINARY, 0666);
1357 FcCacheWriteString (fd, (char *) dir);
1359 current_arch_machine_name = FcCacheMachineSignature ();
1360 current_arch_start = 0;
1363 current_arch_start =
1364 FcCacheSkipToArch(fd_orig, current_arch_machine_name);
1366 if (current_arch_start < 0)
1368 off_t offset = lseek(fd_orig, 0, SEEK_END);
1369 current_arch_start = FcCacheNextOffset (offset);
1372 if (fd_orig != -1 && !FcCacheCopyOld(fd, fd_orig, current_arch_start))
1378 current_arch_start = lseek(fd, 0, SEEK_CUR);
1379 #if defined (HAVE_FTRUNCATE)
1380 if (ftruncate (fd, current_arch_start) == -1)
1383 #if defined (HAVE_CHSIZE)
1384 if (chsize (fd, current_arch_start) == -1)
1391 /* allocate space for subdir names in this block */
1393 for (i = 0; i < dirs->size; i++)
1394 dirs_count += strlen((char *)dirs->strs[i]) + 1;
1397 /* now write the address of the next offset */
1398 truncate_to = FcCacheNextOffset (FcCacheNextOffset (current_arch_start + sizeof (FcCache) + dirs_count) + metadata.count) - current_arch_start;
1399 header = malloc (10 + strlen (current_arch_machine_name));
1402 sprintf (header, "%8x ", (int)truncate_to);
1403 strcat (header, current_arch_machine_name);
1404 if (!FcCacheWriteString (fd, header))
1407 for (i = 0; i < dirs->size; i++)
1408 FcCacheWriteString (fd, (char *)dirs->strs[i]);
1409 FcCacheWriteString (fd, "");
1411 if (write (fd, &metadata, sizeof(FcCache)) != sizeof(FcCache))
1413 perror("write metadata");
1418 off_t off = FcCacheNextOffset (lseek(fd, 0, SEEK_END));
1419 if (lseek (fd, off, SEEK_SET) != off)
1421 else if (write (fd, current_dir_block, metadata.count) !=
1423 perror("write current_dir_block");
1424 free (current_dir_block);
1425 current_dir_block = 0;
1428 /* this actually serves to pad out the cache file, if needed */
1429 #if defined (HAVE_FTRUNCATE)
1430 if (ftruncate (fd, current_arch_start + truncate_to) == -1)
1433 #if defined (HAVE_CHSIZE)
1434 if (chsize (fd, current_arch_start + truncate_to) == -1)
1443 if (!FcAtomicReplaceOrig(atomic))
1445 FcStrFree ((FcChar8 *)cache_hashed);
1446 FcAtomicUnlock (atomic);
1447 FcAtomicDestroy (atomic);
1455 FcAtomicUnlock (atomic);
1457 FcAtomicDestroy (atomic);
1459 FcStrFree ((FcChar8 *)cache_hashed);
1460 if (current_dir_block)
1461 free (current_dir_block);
1466 FcCacheMachineSignature ()
1468 static char buf[MACHINE_SIGNATURE_SIZE];
1469 int32_t magic = ENDIAN_TEST;
1470 char * m = (char *)&magic;
1472 sprintf (buf, "%2x%2x%2x%2x "
1473 "%4x %4x %4x %4x %4x %4x %4x %4x %4x %4x %4x %4x "
1474 "%4x %4x %4x %4x %4x %4x %4x %4x\n",
1475 m[0], m[1], m[2], m[3],
1476 (unsigned int)sizeof (char),
1477 (unsigned int)sizeof (char *),
1478 (unsigned int)sizeof (int),
1479 (unsigned int)sizeof (FcPattern),
1480 (unsigned int)sizeof (FcPatternEltPtr),
1481 (unsigned int)sizeof (struct _FcPatternElt *),
1482 (unsigned int)sizeof (FcPatternElt),
1483 (unsigned int)sizeof (FcObjectPtr),
1484 (unsigned int)sizeof (FcValueListPtr),
1485 (unsigned int)sizeof (FcValue),
1486 (unsigned int)sizeof (FcValueBinding),
1487 (unsigned int)sizeof (struct _FcValueList *),
1488 (unsigned int)sizeof (FcCharSet),
1489 (unsigned int)sizeof (FcCharLeaf **),
1490 (unsigned int)sizeof (FcChar16 *),
1491 (unsigned int)sizeof (FcChar16),
1492 (unsigned int)sizeof (FcCharLeaf),
1493 (unsigned int)sizeof (FcChar32),
1494 (unsigned int)sizeof (FcCache),
1495 #if defined (HAVE_SYSCONF)
1496 (unsigned int)sysconf(_SC_PAGESIZE));
1498 (unsigned int)FC_HARDCODED_PAGESIZE);
1504 static int banks_ptr = 0, banks_alloc = 0;
1505 int * _fcBankId = 0, * _fcBankIdx = 0;
1506 static const char ** bankDirs = 0;
1509 FcCacheHaveBank (int bank)
1513 if (bank < FC_BANK_FIRST)
1516 for (i = 0; i < banks_ptr; i++)
1517 if (_fcBankId[i] == bank)
1524 FcCacheBankToIndexMTF (int bank)
1528 for (i = 0; i < banks_ptr; i++)
1529 if (_fcBankId[_fcBankIdx[i]] == bank)
1531 int t = _fcBankIdx[i];
1533 for (j = i; j > 0; j--)
1534 _fcBankIdx[j] = _fcBankIdx[j-1];
1539 if (banks_ptr >= banks_alloc)
1544 b = realloc (_fcBankId, (banks_alloc + 4) * sizeof(int));
1549 bidx = realloc (_fcBankIdx, (banks_alloc + 4) * sizeof(int));
1554 bds = realloc (bankDirs, (banks_alloc + 4) * sizeof (char *));
1563 _fcBankId[i] = bank;
1569 FcCacheAddBankDir (int bank, const char * dir)
1571 int bi = FcCacheBankToIndexMTF (bank);
1576 bankDirs[bi] = (const char *)FcStrCopy ((FcChar8 *)dir);
1580 FcCacheFindBankDir (int bank)
1582 int bi = FcCacheBankToIndex (bank);
1583 return bankDirs[bi];
1587 * This code implements the MD5 message-digest algorithm.
1588 * The algorithm is due to Ron Rivest. This code was
1589 * written by Colin Plumb in 1993, no copyright is claimed.
1590 * This code is in the public domain; do with it what you wish.
1592 * Equivalent code is available from RSA Data Security, Inc.
1593 * This code has been tested against that, and is equivalent,
1594 * except that you don't need to include two pages of legalese
1597 * To compute the message digest of a chunk of bytes, declare an
1598 * MD5Context structure, pass it to MD5Init, call MD5Update as
1599 * needed on buffers full of bytes, and then call MD5Final, which
1600 * will fill a supplied 16-byte array with the digest.
1604 #define byteReverse(buf, len) /* Nothing */
1607 * Note: this code is harmless on little-endian machines.
1609 void byteReverse(unsigned char *buf, unsigned longs)
1613 t = (FcChar32) ((unsigned) buf[3] << 8 | buf[2]) << 16 |
1614 ((unsigned) buf[1] << 8 | buf[0]);
1615 *(FcChar32 *) buf = t;
1622 * Start MD5 accumulation. Set bit count to 0 and buffer to mysterious
1623 * initialization constants.
1625 static void MD5Init(struct MD5Context *ctx)
1627 ctx->buf[0] = 0x67452301;
1628 ctx->buf[1] = 0xefcdab89;
1629 ctx->buf[2] = 0x98badcfe;
1630 ctx->buf[3] = 0x10325476;
1637 * Update context to reflect the concatenation of another buffer full
1640 static void MD5Update(struct MD5Context *ctx, unsigned char *buf, unsigned len)
1644 /* Update bitcount */
1647 if ((ctx->bits[0] = t + ((FcChar32) len << 3)) < t)
1648 ctx->bits[1]++; /* Carry from low to high */
1649 ctx->bits[1] += len >> 29;
1651 t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data */
1653 /* Handle any leading odd-sized chunks */
1656 unsigned char *p = (unsigned char *) ctx->in + t;
1660 memcpy(p, buf, len);
1664 byteReverse(ctx->in, 16);
1665 MD5Transform(ctx->buf, (FcChar32 *) ctx->in);
1669 /* Process data in 64-byte chunks */
1672 memcpy(ctx->in, buf, 64);
1673 byteReverse(ctx->in, 16);
1674 MD5Transform(ctx->buf, (FcChar32 *) ctx->in);
1679 /* Handle any remaining bytes of data. */
1681 memcpy(ctx->in, buf, len);
1685 * Final wrapup - pad to 64-byte boundary with the bit pattern
1686 * 1 0* (64-bit count of bits processed, MSB-first)
1688 static void MD5Final(unsigned char digest[16], struct MD5Context *ctx)
1693 /* Compute number of bytes mod 64 */
1694 count = (ctx->bits[0] >> 3) & 0x3F;
1696 /* Set the first char of padding to 0x80. This is safe since there is
1697 always at least one byte free */
1698 p = ctx->in + count;
1701 /* Bytes of padding needed to make 64 bytes */
1702 count = 64 - 1 - count;
1704 /* Pad out to 56 mod 64 */
1706 /* Two lots of padding: Pad the first block to 64 bytes */
1707 memset(p, 0, count);
1708 byteReverse(ctx->in, 16);
1709 MD5Transform(ctx->buf, (FcChar32 *) ctx->in);
1711 /* Now fill the next block with 56 bytes */
1712 memset(ctx->in, 0, 56);
1714 /* Pad block to 56 bytes */
1715 memset(p, 0, count - 8);
1717 byteReverse(ctx->in, 14);
1719 /* Append length in bits and transform */
1720 ((FcChar32 *) ctx->in)[14] = ctx->bits[0];
1721 ((FcChar32 *) ctx->in)[15] = ctx->bits[1];
1723 MD5Transform(ctx->buf, (FcChar32 *) ctx->in);
1724 byteReverse((unsigned char *) ctx->buf, 4);
1725 memcpy(digest, ctx->buf, 16);
1726 memset(ctx, 0, sizeof(ctx)); /* In case it's sensitive */
1730 /* The four core functions - F1 is optimized somewhat */
1732 /* #define F1(x, y, z) (x & y | ~x & z) */
1733 #define F1(x, y, z) (z ^ (x & (y ^ z)))
1734 #define F2(x, y, z) F1(z, x, y)
1735 #define F3(x, y, z) (x ^ y ^ z)
1736 #define F4(x, y, z) (y ^ (x | ~z))
1738 /* This is the central step in the MD5 algorithm. */
1739 #define MD5STEP(f, w, x, y, z, data, s) \
1740 ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x )
1743 * The core of the MD5 algorithm, this alters an existing MD5 hash to
1744 * reflect the addition of 16 longwords of new data. MD5Update blocks
1745 * the data and converts bytes into longwords for this routine.
1747 static void MD5Transform(FcChar32 buf[4], FcChar32 in[16])
1749 register FcChar32 a, b, c, d;
1756 MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
1757 MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
1758 MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
1759 MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
1760 MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
1761 MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
1762 MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
1763 MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
1764 MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
1765 MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
1766 MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
1767 MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
1768 MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
1769 MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
1770 MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
1771 MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);
1773 MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);
1774 MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);
1775 MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
1776 MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
1777 MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);
1778 MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
1779 MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
1780 MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
1781 MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
1782 MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
1783 MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
1784 MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);
1785 MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
1786 MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
1787 MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);
1788 MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
1790 MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);
1791 MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);
1792 MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
1793 MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
1794 MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);
1795 MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
1796 MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
1797 MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
1798 MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
1799 MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
1800 MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
1801 MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);
1802 MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
1803 MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
1804 MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
1805 MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
1807 MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);
1808 MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);
1809 MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
1810 MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);
1811 MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
1812 MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
1813 MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
1814 MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
1815 MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
1816 MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
1817 MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
1818 MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
1819 MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
1820 MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
1821 MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
1822 MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);