2 * $RCSId: xc/lib/fontconfig/src/fccache.c,v 1.12 2002/08/22 07:36:44 keithp Exp $
4 * Copyright © 2000 Keith Packard
5 * Copyright © 2005 Patrick Lam
7 * Permission to use, copy, modify, distribute, and sell this software and its
8 * documentation for any purpose is hereby granted without fee, provided that
9 * the above copyright notice appear in all copies and that both that
10 * copyright notice and this permission notice appear in supporting
11 * documentation, and that the name of Keith Packard not be used in
12 * advertising or publicity pertaining to distribution of the software without
13 * specific, written prior permission. Keith Packard makes no
14 * representations about the suitability of this software for any purpose. It
15 * is provided "as is" without express or implied warranty.
17 * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
18 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
19 * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
20 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
21 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
22 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
23 * PERFORMANCE OF THIS SOFTWARE.
30 #include <sys/utsname.h>
31 #include <sys/types.h>
36 #define ENDIAN_TEST 0x12345678
37 #define MACHINE_SIGNATURE_SIZE 9 + 5*20 + 1
40 FcDirCacheOpen (char * cache_file
);
43 FcDirCacheHashName (char * cache_file
, int collisions
);
46 FcCacheSkipToArch (int fd
, const char * arch
);
49 FcCacheCopyOld (int fd
, int fd_orig
, off_t start
);
52 FcDirCacheProduce (FcFontSet
*set
, FcCache
* metadata
);
55 FcDirCacheConsume (int fd
, const char * dir
, FcFontSet
*set
);
58 FcDirCacheRead (FcFontSet
* set
, FcStrSet
* dirs
, const FcChar8
*dir
);
61 FcCacheNextOffset(off_t w
);
64 FcCacheMachineSignature (void);
67 FcCacheHaveBank (int bank
);
70 FcCacheAddBankDir (int bank
, const char * dir
);
78 static void MD5Init(struct MD5Context
*ctx
);
79 static void MD5Update(struct MD5Context
*ctx
, unsigned char *buf
, unsigned len
);
80 static void MD5Final(unsigned char digest
[16], struct MD5Context
*ctx
);
81 static void MD5Transform(FcChar32 buf
[4], FcChar32 in
[16]);
83 #define FC_DBG_CACHE_REF 1024
86 FcCacheReadString (int fd
, char *dest
, int len
)
99 while (read (fd
, &c
, 1) == 1)
126 FcCacheSkipString (int fd
)
132 while (read (fd
, &c
, 1) == 1)
153 FcCacheWriteString (int fd
, const char *chars
)
155 if (write (fd
, chars
, strlen(chars
)+1) != strlen(chars
)+1)
161 FcGlobalCacheDirDestroy (FcGlobalCacheDir
*d
)
163 FcMemFree (FC_MEM_STRING
, strlen (d
->name
)+1);
165 FcMemFree (FC_MEM_CACHE
, sizeof (FcGlobalCacheDir
));
170 FcGlobalCacheCreate (void)
172 FcGlobalCache
*cache
;
174 cache
= malloc (sizeof (FcGlobalCache
));
177 FcMemAlloc (FC_MEM_CACHE
, sizeof (FcGlobalCache
));
179 cache
->updated
= FcFalse
;
185 FcGlobalCacheDestroy (FcGlobalCache
*cache
)
187 FcGlobalCacheDir
*d
, *next
;
189 for (d
= cache
->dirs
; d
; d
= next
)
192 FcGlobalCacheDirDestroy (d
);
194 FcMemFree (FC_MEM_CACHE
, sizeof (FcGlobalCache
));
199 FcGlobalCacheLoad (FcGlobalCache
*cache
,
201 const FcChar8
*cache_file
,
204 char name_buf
[FC_MAX_FILE_LEN
];
205 FcGlobalCacheDir
*d
, *next
;
206 FcFileTime config_time
= FcConfigModifiedTime (config
);
207 char * current_arch_machine_name
;
208 char candidate_arch_machine_name
[MACHINE_SIGNATURE_SIZE
+ 9];
209 off_t current_arch_start
;
211 struct stat cache_stat
, dir_stat
;
213 if (stat ((char *) cache_file
, &cache_stat
) < 0)
216 cache
->fd
= open ((char *) cache_file
, O_RDONLY
);
220 cache
->updated
= FcFalse
;
222 FcCacheReadString (cache
->fd
, name_buf
, sizeof (name_buf
));
223 if (strcmp (name_buf
, FC_GLOBAL_MAGIC_COOKIE
) != 0)
226 current_arch_machine_name
= FcCacheMachineSignature ();
227 current_arch_start
= FcCacheSkipToArch(cache
->fd
,
228 current_arch_machine_name
);
229 if (current_arch_start
< 0)
230 goto bail_and_destroy
;
232 lseek (cache
->fd
, current_arch_start
, SEEK_SET
);
233 FcCacheReadString (cache
->fd
, candidate_arch_machine_name
,
234 sizeof (candidate_arch_machine_name
));
235 if (strlen(candidate_arch_machine_name
) == 0)
236 goto bail_and_destroy
;
242 FcCacheReadString (cache
->fd
, name_buf
, sizeof (name_buf
));
243 if (!strlen(name_buf
))
246 /* Directory must be older than the global cache file; also
247 cache must be newer than the config file. */
248 if (stat ((char *) name_buf
, &dir_stat
) < 0 ||
249 dir_stat
.st_mtime
> cache_stat
.st_mtime
||
250 (config_time
.set
&& cache_stat
.st_mtime
< config_time
.time
))
254 FcStrSetAdd (staleDirs
, FcStrCopy ((FcChar8
*)name_buf
));
255 read (cache
->fd
, &md
, sizeof (FcCache
));
256 lseek (cache
->fd
, FcCacheNextOffset (lseek(cache
->fd
, 0, SEEK_CUR
)) + md
.count
, SEEK_SET
);
260 d
= malloc (sizeof (FcGlobalCacheDir
));
264 d
->next
= cache
->dirs
;
267 d
->name
= (char *)FcStrCopy ((FcChar8
*)name_buf
);
269 d
->offset
= lseek (cache
->fd
, 0, SEEK_CUR
);
270 if (read (cache
->fd
, &d
->metadata
, sizeof (FcCache
)) != sizeof (FcCache
))
272 targ
= FcCacheNextOffset (lseek(cache
->fd
, 0, SEEK_CUR
)) + d
->metadata
.count
;
273 if (lseek (cache
->fd
, targ
, SEEK_SET
) != targ
)
279 for (d
= cache
->dirs
; d
; d
= next
)
294 if (stat ((char *) cache_file
, &cache_stat
) == 0)
295 unlink ((char *)cache_file
);
302 FcGlobalCacheReadDir (FcFontSet
*set
, FcStrSet
*dirs
, FcGlobalCache
* cache
, const char *dir
, FcConfig
*config
)
305 FcBool ret
= FcFalse
;
310 for (d
= cache
->dirs
; d
; d
= d
->next
)
312 if (strncmp (d
->name
, dir
, strlen(dir
)) == 0)
314 lseek (cache
->fd
, d
->offset
, SEEK_SET
);
315 if (!FcDirCacheConsume (cache
->fd
, dir
, set
))
317 if (strcmp (d
->name
, dir
) == 0)
326 FcGlobalCacheUpdate (FcGlobalCache
*cache
,
330 FcGlobalCacheDir
* d
;
332 for (d
= cache
->dirs
; d
; d
= d
->next
)
334 if (strcmp(d
->name
, name
) == 0)
340 d
= malloc (sizeof (FcGlobalCacheDir
));
343 d
->next
= cache
->dirs
;
347 cache
->updated
= FcTrue
;
349 d
->name
= (char *)FcStrCopy ((FcChar8
*)name
);
350 d
->ent
= FcDirCacheProduce (set
, &d
->metadata
);
356 FcGlobalCacheSave (FcGlobalCache
*cache
,
357 const FcChar8
*cache_file
)
360 FcGlobalCacheDir
*dir
;
362 off_t current_arch_start
= 0, truncate_to
;
363 char * current_arch_machine_name
, * header
;
368 #if defined (HAVE_GETUID) && defined (HAVE_GETEUID)
369 /* Set-UID programs can't safely update the cache */
370 if (getuid () != geteuid ())
374 atomic
= FcAtomicCreate (cache_file
);
378 if (!FcAtomicLock (atomic
))
380 fd
= open ((char *) FcAtomicNewFile(atomic
), O_RDWR
| O_CREAT
,
385 fd_orig
= open ((char *) FcAtomicOrigFile(atomic
), O_RDONLY
);
387 current_arch_machine_name
= FcCacheMachineSignature ();
389 current_arch_start
= 0;
391 current_arch_start
= FcCacheSkipToArch (fd_orig
,
392 current_arch_machine_name
);
394 if (current_arch_start
< 0)
395 current_arch_start
= FcCacheNextOffset (lseek(fd_orig
, 0, SEEK_END
));
397 if (!FcCacheCopyOld(fd
, fd_orig
, current_arch_start
))
403 current_arch_start
= lseek(fd
, 0, SEEK_CUR
);
404 if (ftruncate (fd
, current_arch_start
) == -1)
407 header
= malloc (10 + strlen (current_arch_machine_name
));
411 truncate_to
= current_arch_start
+ strlen(current_arch_machine_name
) + 11;
412 for (dir
= cache
->dirs
; dir
; dir
= dir
->next
)
414 truncate_to
+= strlen(dir
->name
) + 1;
415 truncate_to
+= sizeof (FcCache
);
416 truncate_to
= FcCacheNextOffset (truncate_to
);
417 truncate_to
+= dir
->metadata
.count
;
419 truncate_to
-= current_arch_start
;
421 FcCacheWriteString (fd
, FC_GLOBAL_MAGIC_COOKIE
);
422 sprintf (header
, "%8x ", (int)truncate_to
);
423 strcat (header
, current_arch_machine_name
);
424 if (!FcCacheWriteString (fd
, header
))
427 for (dir
= cache
->dirs
; dir
; dir
= dir
->next
)
431 FcCacheWriteString (fd
, dir
->name
);
432 write (fd
, &dir
->metadata
, sizeof(FcCache
));
433 lseek (fd
, FcCacheNextOffset (lseek(fd
, 0, SEEK_CUR
)), SEEK_SET
);
434 write (fd
, dir
->ent
, dir
->metadata
.count
);
438 FcCacheWriteString (fd
, "");
440 if (close (fd
) == -1)
443 if (!FcAtomicReplaceOrig (atomic
))
446 FcAtomicUnlock (atomic
);
447 FcAtomicDestroy (atomic
);
449 cache
->updated
= FcFalse
;
460 FcAtomicDeleteNew (atomic
);
462 FcAtomicUnlock (atomic
);
464 FcAtomicDestroy (atomic
);
469 * Find the next presumably-mmapable offset after the supplied file
473 FcCacheNextOffset(off_t w
)
475 static long pagesize
= -1;
477 pagesize
= sysconf(_SC_PAGESIZE
);
478 if (w
% pagesize
== 0)
481 return ((w
/ pagesize
)+1)*pagesize
;
484 /* return the address of the segment for the provided arch,
485 * or -1 if arch not found */
487 FcCacheSkipToArch (int fd
, const char * arch
)
489 char candidate_arch_machine_name_count
[MACHINE_SIGNATURE_SIZE
+ 9];
490 char * candidate_arch
;
491 off_t current_arch_start
= 0;
493 lseek (fd
, 0, SEEK_SET
);
494 FcCacheSkipString (fd
);
495 current_arch_start
= lseek (fd
, 0, SEEK_CUR
);
497 /* skip arches that are not the current arch */
502 if (lseek (fd
, current_arch_start
, SEEK_SET
) != current_arch_start
)
505 if (FcCacheReadString (fd
, candidate_arch_machine_name_count
,
506 sizeof (candidate_arch_machine_name_count
)) == 0)
508 if (!strlen(candidate_arch_machine_name_count
))
510 bs
= strtol(candidate_arch_machine_name_count
, &candidate_arch
, 16);
512 // count = 0 should probably be distinguished from the !bs condition
513 if (!bs
|| bs
< strlen (candidate_arch_machine_name_count
))
516 candidate_arch
++; /* skip leading space */
518 if (strcmp (candidate_arch
, arch
)==0)
519 return current_arch_start
;
520 current_arch_start
+= bs
;
526 /* Cuts out the segment at the file pointer (moves everything else
527 * down to cover it), and leaves the file pointer at the end of the
530 FcCacheCopyOld (int fd
, int fd_orig
, off_t start
)
532 char * buf
= malloc (8192);
533 char candidate_arch_machine_name
[MACHINE_SIGNATURE_SIZE
+ 9];
535 int c
, bytes_skipped
;
542 lseek (fd
, 0, SEEK_SET
); lseek (fd_orig
, 0, SEEK_SET
);
549 if ((c
= read (fd_orig
, buf
, b
)) <= 0)
551 if (write (fd
, buf
, c
) < 0)
558 lseek (fd
, start
, SEEK_SET
);
559 if (FcCacheReadString (fd
, candidate_arch_machine_name
,
560 sizeof (candidate_arch_machine_name
)) == 0)
562 if (!strlen(candidate_arch_machine_name
))
565 bs
= strtol(candidate_arch_machine_name
, 0, 16);
572 lseek (fd
, start
+bs
+bytes_skipped
, SEEK_SET
);
573 if ((c
= read (fd
, buf
, 8192)) <= 0)
575 lseek (fd
, start
+bytes_skipped
, SEEK_SET
);
576 if (write (fd
, buf
, c
) < 0)
581 lseek (fd
, start
+bytes_skipped
, SEEK_SET
);
592 /* Does not check that the cache has the appropriate arch section. */
593 /* Also, this can be fooled if the original location has a stale
594 * cache, and the hashed location has an up-to-date cache. Oh well,
595 * sucks to be you in that case! */
597 FcDirCacheValid (const FcChar8
*dir
)
600 struct stat file_stat
, dir_stat
;
603 if (stat ((char *) dir
, &dir_stat
) < 0)
606 cache_file
= FcStrPlus (dir
, (FcChar8
*) "/" FC_DIR_CACHE_FILE
);
610 fd
= FcDirCacheOpen ((char *)cache_file
);
614 if (fstat (fd
, &file_stat
) < 0)
618 FcStrFree (cache_file
);
621 * If the directory has been modified more recently than
622 * the cache file, the cache is not valid
624 if (dir_stat
.st_mtime
> file_stat
.st_mtime
)
632 FcStrFree (cache_file
);
636 /* Assumes that the cache file in 'dir' exists.
637 * Checks that the cache has the appropriate arch section. */
639 FcDirCacheHasCurrentArch (const FcChar8
*dir
)
643 off_t current_arch_start
;
644 char *current_arch_machine_name
;
646 cache_file
= (char *)FcStrPlus (dir
, (FcChar8
*) "/" FC_DIR_CACHE_FILE
);
650 fd
= FcDirCacheOpen (cache_file
);
654 current_arch_machine_name
= FcCacheMachineSignature();
655 current_arch_start
= FcCacheSkipToArch(fd
, current_arch_machine_name
);
658 if (current_arch_start
< 0)
669 FcDirCacheUnlink (const FcChar8
*dir
)
671 char *cache_file
= (char *)FcStrPlus (dir
, (FcChar8
*) "/" FC_DIR_CACHE_FILE
);
674 struct stat cache_stat
;
675 char name_buf
[FC_MAX_FILE_LEN
];
677 /* First remove normal cache file. */
678 if (stat ((char *) cache_file
, &cache_stat
) == 0 &&
679 unlink ((char *)cache_file
) != 0)
682 /* Next remove any applicable hashed files. */
683 fd
= -1; collisions
= 0;
686 cache_hashed
= FcDirCacheHashName (cache_file
, collisions
++);
692 fd
= open(cache_hashed
, O_RDONLY
);
695 FcStrFree ((FcChar8
*)cache_file
);
699 FcCacheReadString (fd
, name_buf
, sizeof (name_buf
));
700 if (!strlen(name_buf
))
702 } while (strcmp (name_buf
, cache_file
) != 0);
704 FcStrFree ((FcChar8
*)cache_file
);
707 if (stat ((char *) cache_hashed
, &cache_stat
) == 0 &&
708 unlink ((char *)cache_hashed
) != 0)
710 FcStrFree ((FcChar8
*)cache_hashed
);
714 FcStrFree ((FcChar8
*)cache_hashed
);
718 FcStrFree ((FcChar8
*)cache_file
);
723 FcCacheReadDirs (FcConfig
* config
, FcGlobalCache
* cache
,
724 FcStrList
*list
, FcFontSet
* set
)
728 FcChar8
*file
, *base
;
734 * Read in the results from 'list'.
736 while ((dir
= FcStrListNext (list
)))
738 if (!FcConfigAcceptFilename (config
, dir
))
742 file
= (FcChar8
*) malloc (strlen ((char *) dir
) + 1 + FC_MAX_FILE_LEN
+ 1);
746 strcpy ((char *) file
, (char *) dir
);
747 strcat ((char *) file
, "/");
748 base
= file
+ strlen ((char *) file
);
750 subdirs
= FcStrSetCreate ();
753 fprintf (stderr
, "Can't create directory set\n");
759 if (access ((char *) dir
, X_OK
) < 0)
767 fprintf (stderr
, "\"%s\": ", dir
);
771 FcStrSetDestroy (subdirs
);
775 if (stat ((char *) dir
, &statb
) == -1)
777 fprintf (stderr
, "\"%s\": ", dir
);
779 FcStrSetDestroy (subdirs
);
784 if (!S_ISDIR (statb
.st_mode
))
786 fprintf (stderr
, "\"%s\": not a directory, skipping\n", dir
);
787 FcStrSetDestroy (subdirs
);
791 if (!FcDirCacheValid (dir
) || !FcDirCacheRead (set
, subdirs
, dir
))
793 if (FcDebug () & FC_DBG_FONTSET
)
794 printf ("cache scan dir %s\n", dir
);
796 FcDirScanConfig (set
, subdirs
, cache
,
797 config
->blanks
, dir
, FcFalse
, config
);
799 sublist
= FcStrListCreate (subdirs
);
800 FcStrSetDestroy (subdirs
);
803 fprintf (stderr
, "Can't create subdir list in \"%s\"\n", dir
);
808 ret
+= FcCacheReadDirs (config
, cache
, sublist
, set
);
811 FcStrListDone (list
);
816 FcCacheRead (FcConfig
*config
, FcGlobalCache
* cache
)
818 FcFontSet
* s
= FcFontSetCreate();
822 if (FcCacheReadDirs (config
, cache
, FcConfigGetConfigDirs (config
), s
))
828 FcFontSetDestroy (s
);
832 static const char bin2hex
[] = { '0', '1', '2', '3',
835 'c', 'd', 'e', 'f' };
838 FcDirCacheHashName (char * cache_file
, int collisions
)
840 unsigned char hash
[16], hex_hash
[33];
842 unsigned char uscore
= '_';
845 struct MD5Context ctx
;
848 MD5Update (&ctx
, (unsigned char *)cache_file
, strlen (cache_file
));
850 for (i
= 0; i
< collisions
; i
++)
851 MD5Update (&ctx
, &uscore
, 1);
853 MD5Final (hash
, &ctx
);
855 for (cnt
= 0; cnt
< 16; ++cnt
)
857 hex_hash
[2*cnt
] = bin2hex
[hash
[cnt
] >> 4];
858 hex_hash
[2*cnt
+1] = bin2hex
[hash
[cnt
] & 0xf];
862 tmp
= FcStrPlus ((FcChar8
*)hex_hash
, (FcChar8
*)FC_CACHE_SUFFIX
);
866 cache_hashed
= (char *)FcStrPlus ((FcChar8
*)PKGCACHEDIR
"/", tmp
);
872 /* Opens the hashed name for cache_file.
873 * This would fail in the unlikely event of a collision and subsequent
874 * removal of the file which originally caused the collision. */
876 FcDirCacheOpen (char *cache_file
)
878 int fd
= -1, collisions
= 0;
880 char name_buf
[FC_MAX_FILE_LEN
];
882 fd
= open(cache_file
, O_RDONLY
);
888 cache_hashed
= FcDirCacheHashName (cache_file
, collisions
++);
894 fd
= open(cache_hashed
, O_RDONLY
);
895 FcStrFree ((FcChar8
*)cache_hashed
);
899 FcCacheReadString (fd
, name_buf
, sizeof (name_buf
));
900 if (!strlen(name_buf
))
902 } while (strcmp (name_buf
, cache_file
) != 0);
910 /* read serialized state from the cache file */
912 FcDirCacheRead (FcFontSet
* set
, FcStrSet
* dirs
, const FcChar8
*dir
)
916 char *current_arch_machine_name
;
917 char candidate_arch_machine_name
[9+MACHINE_SIGNATURE_SIZE
];
918 off_t current_arch_start
= 0;
919 char subdirName
[FC_MAX_FILE_LEN
+ 1 + 12 + 1];
921 cache_file
= (char *)FcStrPlus (dir
, (FcChar8
*) "/" FC_DIR_CACHE_FILE
);
925 fd
= FcDirCacheOpen (cache_file
);
929 current_arch_machine_name
= FcCacheMachineSignature();
930 current_arch_start
= FcCacheSkipToArch(fd
,
931 current_arch_machine_name
);
932 if (current_arch_start
< 0)
935 lseek (fd
, current_arch_start
, SEEK_SET
);
936 if (FcCacheReadString (fd
, candidate_arch_machine_name
,
937 sizeof (candidate_arch_machine_name
)) == 0)
940 while (strlen(FcCacheReadString (fd
, subdirName
, sizeof (subdirName
))) > 0)
941 FcStrSetAdd (dirs
, (FcChar8
*)subdirName
);
943 if (!FcDirCacheConsume (fd
, (const char *)dir
, set
))
958 FcDirCacheConsume (int fd
, const char * dir
, FcFontSet
*set
)
961 void * current_dir_block
;
964 read(fd
, &metadata
, sizeof(FcCache
));
965 if (metadata
.magic
!= FC_CACHE_MAGIC
)
971 pos
= FcCacheNextOffset (lseek(fd
, 0, SEEK_CUR
));
972 current_dir_block
= mmap (0, metadata
.count
,
973 PROT_READ
, MAP_SHARED
, fd
, pos
);
974 lseek (fd
, pos
+metadata
.count
, SEEK_SET
);
975 if (current_dir_block
== MAP_FAILED
)
978 FcCacheAddBankDir (metadata
.bank
, dir
);
980 if (!FcFontSetUnserialize (&metadata
, set
, current_dir_block
))
987 FcDirCacheProduce (FcFontSet
*set
, FcCache
*metadata
)
989 void * current_dir_block
, * final_dir_block
;
990 static unsigned int rand_state
= 0;
991 int bank
, needed_bytes_no_align
;
994 rand_state
= time(0L);
995 bank
= rand_r(&rand_state
);
997 while (FcCacheHaveBank(bank
))
998 bank
= rand_r(&rand_state
);
1000 memset (metadata
, 0, sizeof(FcCache
));
1002 needed_bytes_no_align
= FcFontSetNeededBytes (set
);
1003 metadata
->count
= needed_bytes_no_align
+
1004 FcFontSetNeededBytesAlign ();
1005 metadata
->magic
= FC_CACHE_MAGIC
;
1006 metadata
->bank
= bank
;
1008 if (!needed_bytes_no_align
) /* not a failure, no fonts to write */
1010 /* no, you don't really need to write any bytes at all. */
1011 metadata
->count
= 0;
1015 current_dir_block
= malloc (metadata
->count
);
1016 if (!current_dir_block
)
1019 memset (current_dir_block
, 0, metadata
->count
);
1020 final_dir_block
= FcFontSetDistributeBytes (metadata
, current_dir_block
);
1022 if ((void *)((char *)current_dir_block
+metadata
->count
) < final_dir_block
)
1025 if (!FcFontSetSerialize (bank
, set
))
1028 return current_dir_block
;
1031 free (current_dir_block
);
1035 /* write serialized state to the cache file */
1037 FcDirCacheWrite (FcFontSet
*set
, FcStrSet
*dirs
, const FcChar8
*dir
)
1041 int fd
, fd_orig
, i
, dirs_count
;
1044 off_t current_arch_start
= 0, truncate_to
;
1045 char name_buf
[FC_MAX_FILE_LEN
];
1048 char *current_arch_machine_name
, * header
;
1049 void *current_dir_block
= 0;
1051 cache_file
= (char *)FcStrPlus (dir
, (FcChar8
*) "/" FC_DIR_CACHE_FILE
);
1055 /* Ensure that we're not trampling a cache for some other dir. */
1056 /* This is slightly different from FcDirCacheOpen, since it
1057 * needs the filename, not the file descriptor. */
1058 fd
= -1; collisions
= 0;
1061 cache_hashed
= FcDirCacheHashName (cache_file
, collisions
++);
1067 fd
= open(cache_hashed
, O_RDONLY
);
1070 FcCacheReadString (fd
, name_buf
, sizeof (name_buf
));
1073 if (!strlen(name_buf
))
1076 if (strcmp (name_buf
, cache_file
) != 0)
1080 current_dir_block
= FcDirCacheProduce (set
, &metadata
);
1082 if (metadata
.count
&& !current_dir_block
)
1085 if (FcDebug () & FC_DBG_CACHE
)
1086 printf ("FcDirCacheWriteDir cache_file \"%s\"\n", cache_file
);
1088 atomic
= FcAtomicCreate ((FcChar8
*)cache_hashed
);
1092 if (!FcAtomicLock (atomic
))
1094 /* Now try rewriting the original version of the file. */
1095 FcAtomicDestroy (atomic
);
1097 atomic
= FcAtomicCreate ((FcChar8
*)cache_file
);
1098 fd_orig
= open (cache_file
, O_RDONLY
);
1100 fd_orig
= open((char *)FcAtomicOrigFile (atomic
), O_RDONLY
);
1102 fd
= open((char *)FcAtomicNewFile (atomic
), O_RDWR
| O_CREAT
, 0666);
1107 /* In all cases, try opening the real location of the cache file first. */
1108 /* (even if that's not atomic.) */
1109 fd_orig
= open (cache_file
, O_RDONLY
);
1111 fd_orig
= open((char *)FcAtomicOrigFile (atomic
), O_RDONLY
);
1113 fd
= open((char *)FcAtomicNewFile (atomic
), O_RDWR
| O_CREAT
, 0666);
1117 FcCacheWriteString (fd
, cache_file
);
1119 current_arch_machine_name
= FcCacheMachineSignature ();
1120 current_arch_start
= 0;
1123 current_arch_start
=
1124 FcCacheSkipToArch(fd_orig
, current_arch_machine_name
);
1126 if (current_arch_start
< 0)
1127 current_arch_start
= FcCacheNextOffset (lseek(fd_orig
, 0, SEEK_END
));
1129 if (fd_orig
!= -1 && !FcCacheCopyOld(fd
, fd_orig
, current_arch_start
))
1135 current_arch_start
= lseek(fd
, 0, SEEK_CUR
);
1136 if (ftruncate (fd
, current_arch_start
) == -1)
1139 /* allocate space for subdir names in this block */
1141 for (i
= 0; i
< dirs
->size
; i
++)
1142 dirs_count
+= strlen((char *)dirs
->strs
[i
]) + 1;
1145 /* now write the address of the next offset */
1146 truncate_to
= FcCacheNextOffset (FcCacheNextOffset (current_arch_start
+ sizeof (FcCache
) + dirs_count
) + metadata
.count
) - current_arch_start
;
1147 header
= malloc (10 + strlen (current_arch_machine_name
));
1150 sprintf (header
, "%8x ", (int)truncate_to
);
1151 strcat (header
, current_arch_machine_name
);
1152 if (!FcCacheWriteString (fd
, header
))
1155 for (i
= 0; i
< dirs
->size
; i
++)
1156 FcCacheWriteString (fd
, (char *)dirs
->strs
[i
]);
1157 FcCacheWriteString (fd
, "");
1159 write (fd
, &metadata
, sizeof(FcCache
));
1162 lseek (fd
, FcCacheNextOffset (lseek(fd
, 0, SEEK_END
)), SEEK_SET
);
1163 write (fd
, current_dir_block
, metadata
.count
);
1164 free (current_dir_block
);
1167 /* this actually serves to pad out the cache file, if needed */
1168 if (ftruncate (fd
, current_arch_start
+ truncate_to
) == -1)
1172 if (!FcAtomicReplaceOrig(atomic
))
1174 FcStrFree ((FcChar8
*)cache_hashed
);
1175 FcAtomicUnlock (atomic
);
1176 FcAtomicDestroy (atomic
);
1184 FcAtomicUnlock (atomic
);
1186 FcAtomicDestroy (atomic
);
1188 FcStrFree ((FcChar8
*)cache_hashed
);
1190 unlink ((char *)cache_file
);
1192 if (current_dir_block
)
1193 free (current_dir_block
);
1199 FcCacheMachineSignature ()
1201 static char buf
[MACHINE_SIGNATURE_SIZE
];
1202 int32_t magic
= ENDIAN_TEST
;
1203 char * m
= (char *)&magic
;
1205 sprintf (buf
, "%2x%2x%2x%2x "
1206 "%4x %4x %4x %4x %4x %4x %4x %4x %4x %4x %4x %4x "
1207 "%4x %4x %4x %4x %4x %4x %4x %4x\n",
1208 m
[0], m
[1], m
[2], m
[3],
1209 (unsigned int)sizeof (char),
1210 (unsigned int)sizeof (char *),
1211 (unsigned int)sizeof (int),
1212 (unsigned int)sizeof (FcPattern
),
1213 (unsigned int)sizeof (FcPatternEltPtr
),
1214 (unsigned int)sizeof (struct _FcPatternElt
*),
1215 (unsigned int)sizeof (FcPatternElt
),
1216 (unsigned int)sizeof (FcObjectPtr
),
1217 (unsigned int)sizeof (FcValueListPtr
),
1218 (unsigned int)sizeof (FcValue
),
1219 (unsigned int)sizeof (FcValueBinding
),
1220 (unsigned int)sizeof (struct _FcValueList
*),
1221 (unsigned int)sizeof (FcCharSet
),
1222 (unsigned int)sizeof (FcCharLeaf
**),
1223 (unsigned int)sizeof (FcChar16
*),
1224 (unsigned int)sizeof (FcChar16
),
1225 (unsigned int)sizeof (FcCharLeaf
),
1226 (unsigned int)sizeof (FcChar32
),
1227 (unsigned int)sizeof (FcCache
),
1228 (unsigned int)sysconf(_SC_PAGESIZE
));
1233 static int banks_ptr
= 0, banks_alloc
= 0;
1234 int * _fcBankId
= 0, * _fcBankIdx
= 0;
1235 static const char ** bankDirs
= 0;
1238 FcCacheHaveBank (int bank
)
1242 if (bank
< FC_BANK_FIRST
)
1245 for (i
= 0; i
< banks_ptr
; i
++)
1246 if (_fcBankId
[i
] == bank
)
1253 FcCacheBankToIndexMTF (int bank
)
1257 for (i
= 0; i
< banks_ptr
; i
++)
1258 if (_fcBankId
[_fcBankIdx
[i
]] == bank
)
1260 int t
= _fcBankIdx
[i
];
1262 for (j
= i
; j
> 0; j
--)
1263 _fcBankIdx
[j
] = _fcBankIdx
[j
-1];
1268 if (banks_ptr
>= banks_alloc
)
1273 b
= realloc (_fcBankId
, (banks_alloc
+ 4) * sizeof(int));
1278 bidx
= realloc (_fcBankIdx
, (banks_alloc
+ 4) * sizeof(int));
1283 bds
= realloc (bankDirs
, (banks_alloc
+ 4) * sizeof (char *));
1292 _fcBankId
[i
] = bank
;
1298 FcCacheAddBankDir (int bank
, const char * dir
)
1300 int bi
= FcCacheBankToIndexMTF (bank
);
1305 bankDirs
[bi
] = (const char *)FcStrCopy ((FcChar8
*)dir
);
1309 FcCacheFindBankDir (int bank
)
1311 int bi
= FcCacheBankToIndex (bank
);
1312 return bankDirs
[bi
];
1316 * This code implements the MD5 message-digest algorithm.
1317 * The algorithm is due to Ron Rivest. This code was
1318 * written by Colin Plumb in 1993, no copyright is claimed.
1319 * This code is in the public domain; do with it what you wish.
1321 * Equivalent code is available from RSA Data Security, Inc.
1322 * This code has been tested against that, and is equivalent,
1323 * except that you don't need to include two pages of legalese
1326 * To compute the message digest of a chunk of bytes, declare an
1327 * MD5Context structure, pass it to MD5Init, call MD5Update as
1328 * needed on buffers full of bytes, and then call MD5Final, which
1329 * will fill a supplied 16-byte array with the digest.
1333 #define byteReverse(buf, len) /* Nothing */
1336 * Note: this code is harmless on little-endian machines.
1338 void byteReverse(unsigned char *buf
, unsigned longs
)
1342 t
= (FcChar32
) ((unsigned) buf
[3] << 8 | buf
[2]) << 16 |
1343 ((unsigned) buf
[1] << 8 | buf
[0]);
1344 *(FcChar32
*) buf
= t
;
1351 * Start MD5 accumulation. Set bit count to 0 and buffer to mysterious
1352 * initialization constants.
1354 static void MD5Init(struct MD5Context
*ctx
)
1356 ctx
->buf
[0] = 0x67452301;
1357 ctx
->buf
[1] = 0xefcdab89;
1358 ctx
->buf
[2] = 0x98badcfe;
1359 ctx
->buf
[3] = 0x10325476;
1366 * Update context to reflect the concatenation of another buffer full
1369 static void MD5Update(struct MD5Context
*ctx
, unsigned char *buf
, unsigned len
)
1373 /* Update bitcount */
1376 if ((ctx
->bits
[0] = t
+ ((FcChar32
) len
<< 3)) < t
)
1377 ctx
->bits
[1]++; /* Carry from low to high */
1378 ctx
->bits
[1] += len
>> 29;
1380 t
= (t
>> 3) & 0x3f; /* Bytes already in shsInfo->data */
1382 /* Handle any leading odd-sized chunks */
1385 unsigned char *p
= (unsigned char *) ctx
->in
+ t
;
1389 memcpy(p
, buf
, len
);
1393 byteReverse(ctx
->in
, 16);
1394 MD5Transform(ctx
->buf
, (FcChar32
*) ctx
->in
);
1398 /* Process data in 64-byte chunks */
1401 memcpy(ctx
->in
, buf
, 64);
1402 byteReverse(ctx
->in
, 16);
1403 MD5Transform(ctx
->buf
, (FcChar32
*) ctx
->in
);
1408 /* Handle any remaining bytes of data. */
1410 memcpy(ctx
->in
, buf
, len
);
1414 * Final wrapup - pad to 64-byte boundary with the bit pattern
1415 * 1 0* (64-bit count of bits processed, MSB-first)
1417 static void MD5Final(unsigned char digest
[16], struct MD5Context
*ctx
)
1422 /* Compute number of bytes mod 64 */
1423 count
= (ctx
->bits
[0] >> 3) & 0x3F;
1425 /* Set the first char of padding to 0x80. This is safe since there is
1426 always at least one byte free */
1427 p
= ctx
->in
+ count
;
1430 /* Bytes of padding needed to make 64 bytes */
1431 count
= 64 - 1 - count
;
1433 /* Pad out to 56 mod 64 */
1435 /* Two lots of padding: Pad the first block to 64 bytes */
1436 memset(p
, 0, count
);
1437 byteReverse(ctx
->in
, 16);
1438 MD5Transform(ctx
->buf
, (FcChar32
*) ctx
->in
);
1440 /* Now fill the next block with 56 bytes */
1441 memset(ctx
->in
, 0, 56);
1443 /* Pad block to 56 bytes */
1444 memset(p
, 0, count
- 8);
1446 byteReverse(ctx
->in
, 14);
1448 /* Append length in bits and transform */
1449 ((FcChar32
*) ctx
->in
)[14] = ctx
->bits
[0];
1450 ((FcChar32
*) ctx
->in
)[15] = ctx
->bits
[1];
1452 MD5Transform(ctx
->buf
, (FcChar32
*) ctx
->in
);
1453 byteReverse((unsigned char *) ctx
->buf
, 4);
1454 memcpy(digest
, ctx
->buf
, 16);
1455 memset(ctx
, 0, sizeof(ctx
)); /* In case it's sensitive */
1459 /* The four core functions - F1 is optimized somewhat */
1461 /* #define F1(x, y, z) (x & y | ~x & z) */
1462 #define F1(x, y, z) (z ^ (x & (y ^ z)))
1463 #define F2(x, y, z) F1(z, x, y)
1464 #define F3(x, y, z) (x ^ y ^ z)
1465 #define F4(x, y, z) (y ^ (x | ~z))
1467 /* This is the central step in the MD5 algorithm. */
1468 #define MD5STEP(f, w, x, y, z, data, s) \
1469 ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x )
1472 * The core of the MD5 algorithm, this alters an existing MD5 hash to
1473 * reflect the addition of 16 longwords of new data. MD5Update blocks
1474 * the data and converts bytes into longwords for this routine.
1476 static void MD5Transform(FcChar32 buf
[4], FcChar32 in
[16])
1478 register FcChar32 a
, b
, c
, d
;
1485 MD5STEP(F1
, a
, b
, c
, d
, in
[0] + 0xd76aa478, 7);
1486 MD5STEP(F1
, d
, a
, b
, c
, in
[1] + 0xe8c7b756, 12);
1487 MD5STEP(F1
, c
, d
, a
, b
, in
[2] + 0x242070db, 17);
1488 MD5STEP(F1
, b
, c
, d
, a
, in
[3] + 0xc1bdceee, 22);
1489 MD5STEP(F1
, a
, b
, c
, d
, in
[4] + 0xf57c0faf, 7);
1490 MD5STEP(F1
, d
, a
, b
, c
, in
[5] + 0x4787c62a, 12);
1491 MD5STEP(F1
, c
, d
, a
, b
, in
[6] + 0xa8304613, 17);
1492 MD5STEP(F1
, b
, c
, d
, a
, in
[7] + 0xfd469501, 22);
1493 MD5STEP(F1
, a
, b
, c
, d
, in
[8] + 0x698098d8, 7);
1494 MD5STEP(F1
, d
, a
, b
, c
, in
[9] + 0x8b44f7af, 12);
1495 MD5STEP(F1
, c
, d
, a
, b
, in
[10] + 0xffff5bb1, 17);
1496 MD5STEP(F1
, b
, c
, d
, a
, in
[11] + 0x895cd7be, 22);
1497 MD5STEP(F1
, a
, b
, c
, d
, in
[12] + 0x6b901122, 7);
1498 MD5STEP(F1
, d
, a
, b
, c
, in
[13] + 0xfd987193, 12);
1499 MD5STEP(F1
, c
, d
, a
, b
, in
[14] + 0xa679438e, 17);
1500 MD5STEP(F1
, b
, c
, d
, a
, in
[15] + 0x49b40821, 22);
1502 MD5STEP(F2
, a
, b
, c
, d
, in
[1] + 0xf61e2562, 5);
1503 MD5STEP(F2
, d
, a
, b
, c
, in
[6] + 0xc040b340, 9);
1504 MD5STEP(F2
, c
, d
, a
, b
, in
[11] + 0x265e5a51, 14);
1505 MD5STEP(F2
, b
, c
, d
, a
, in
[0] + 0xe9b6c7aa, 20);
1506 MD5STEP(F2
, a
, b
, c
, d
, in
[5] + 0xd62f105d, 5);
1507 MD5STEP(F2
, d
, a
, b
, c
, in
[10] + 0x02441453, 9);
1508 MD5STEP(F2
, c
, d
, a
, b
, in
[15] + 0xd8a1e681, 14);
1509 MD5STEP(F2
, b
, c
, d
, a
, in
[4] + 0xe7d3fbc8, 20);
1510 MD5STEP(F2
, a
, b
, c
, d
, in
[9] + 0x21e1cde6, 5);
1511 MD5STEP(F2
, d
, a
, b
, c
, in
[14] + 0xc33707d6, 9);
1512 MD5STEP(F2
, c
, d
, a
, b
, in
[3] + 0xf4d50d87, 14);
1513 MD5STEP(F2
, b
, c
, d
, a
, in
[8] + 0x455a14ed, 20);
1514 MD5STEP(F2
, a
, b
, c
, d
, in
[13] + 0xa9e3e905, 5);
1515 MD5STEP(F2
, d
, a
, b
, c
, in
[2] + 0xfcefa3f8, 9);
1516 MD5STEP(F2
, c
, d
, a
, b
, in
[7] + 0x676f02d9, 14);
1517 MD5STEP(F2
, b
, c
, d
, a
, in
[12] + 0x8d2a4c8a, 20);
1519 MD5STEP(F3
, a
, b
, c
, d
, in
[5] + 0xfffa3942, 4);
1520 MD5STEP(F3
, d
, a
, b
, c
, in
[8] + 0x8771f681, 11);
1521 MD5STEP(F3
, c
, d
, a
, b
, in
[11] + 0x6d9d6122, 16);
1522 MD5STEP(F3
, b
, c
, d
, a
, in
[14] + 0xfde5380c, 23);
1523 MD5STEP(F3
, a
, b
, c
, d
, in
[1] + 0xa4beea44, 4);
1524 MD5STEP(F3
, d
, a
, b
, c
, in
[4] + 0x4bdecfa9, 11);
1525 MD5STEP(F3
, c
, d
, a
, b
, in
[7] + 0xf6bb4b60, 16);
1526 MD5STEP(F3
, b
, c
, d
, a
, in
[10] + 0xbebfbc70, 23);
1527 MD5STEP(F3
, a
, b
, c
, d
, in
[13] + 0x289b7ec6, 4);
1528 MD5STEP(F3
, d
, a
, b
, c
, in
[0] + 0xeaa127fa, 11);
1529 MD5STEP(F3
, c
, d
, a
, b
, in
[3] + 0xd4ef3085, 16);
1530 MD5STEP(F3
, b
, c
, d
, a
, in
[6] + 0x04881d05, 23);
1531 MD5STEP(F3
, a
, b
, c
, d
, in
[9] + 0xd9d4d039, 4);
1532 MD5STEP(F3
, d
, a
, b
, c
, in
[12] + 0xe6db99e5, 11);
1533 MD5STEP(F3
, c
, d
, a
, b
, in
[15] + 0x1fa27cf8, 16);
1534 MD5STEP(F3
, b
, c
, d
, a
, in
[2] + 0xc4ac5665, 23);
1536 MD5STEP(F4
, a
, b
, c
, d
, in
[0] + 0xf4292244, 6);
1537 MD5STEP(F4
, d
, a
, b
, c
, in
[7] + 0x432aff97, 10);
1538 MD5STEP(F4
, c
, d
, a
, b
, in
[14] + 0xab9423a7, 15);
1539 MD5STEP(F4
, b
, c
, d
, a
, in
[5] + 0xfc93a039, 21);
1540 MD5STEP(F4
, a
, b
, c
, d
, in
[12] + 0x655b59c3, 6);
1541 MD5STEP(F4
, d
, a
, b
, c
, in
[3] + 0x8f0ccc92, 10);
1542 MD5STEP(F4
, c
, d
, a
, b
, in
[10] + 0xffeff47d, 15);
1543 MD5STEP(F4
, b
, c
, d
, a
, in
[1] + 0x85845dd1, 21);
1544 MD5STEP(F4
, a
, b
, c
, d
, in
[8] + 0x6fa87e4f, 6);
1545 MD5STEP(F4
, d
, a
, b
, c
, in
[15] + 0xfe2ce6e0, 10);
1546 MD5STEP(F4
, c
, d
, a
, b
, in
[6] + 0xa3014314, 15);
1547 MD5STEP(F4
, b
, c
, d
, a
, in
[13] + 0x4e0811a1, 21);
1548 MD5STEP(F4
, a
, b
, c
, d
, in
[4] + 0xf7537e82, 6);
1549 MD5STEP(F4
, d
, a
, b
, c
, in
[11] + 0xbd3af235, 10);
1550 MD5STEP(F4
, c
, d
, a
, b
, in
[2] + 0x2ad7d2bb, 15);
1551 MD5STEP(F4
, b
, c
, d
, a
, in
[9] + 0xeb86d391, 21);