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24330d27 | 1 | /* |
4bd4418a | 2 | * $RCSId: xc/lib/fontconfig/src/fccache.c,v 1.12 2002/08/22 07:36:44 keithp Exp $ |
24330d27 | 3 | * |
46b51147 | 4 | * Copyright © 2000 Keith Packard |
03a212e5 | 5 | * Copyright © 2005 Patrick Lam |
24330d27 KP |
6 | * |
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. | |
16 | * | |
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. | |
24 | */ | |
25 | ||
212c9f43 | 26 | #include <fcntl.h> |
4262e0b3 | 27 | #include <dirent.h> |
ea44e218 | 28 | #include <string.h> |
fd77c154 PL |
29 | #include <sys/types.h> |
30 | #include <unistd.h> | |
24330d27 | 31 | #include "fcint.h" |
7fd7221e | 32 | #include <unistd.h> |
d6217cc6 PL |
33 | #if defined(HAVE_MMAP) || defined(__CYGWIN__) |
34 | # include <sys/mman.h> | |
35 | # include <sys/utsname.h> | |
36 | #endif | |
24330d27 | 37 | |
2dbe7597 | 38 | #define ENDIAN_TEST 0x12345678 |
f2fb985c | 39 | #define MACHINE_SIGNATURE_SIZE (9 + 5*20 + 1) |
d6217cc6 PL |
40 | /* for when we don't have sysconf: */ |
41 | #define FC_HARDCODED_PAGESIZE 8192 | |
2dbe7597 | 42 | |
879af706 PL |
43 | #ifndef O_BINARY |
44 | #define O_BINARY 0 | |
45 | #endif | |
46 | ||
ea44e218 | 47 | static int |
df3efc11 | 48 | FcDirCacheOpen (const FcChar8 * dir); |
ea44e218 PL |
49 | |
50 | static char * | |
51 | FcDirCacheHashName (char * cache_file, int collisions); | |
52 | ||
eb0cf671 | 53 | static off_t |
c60ec7cc | 54 | FcCacheSkipToArch (int fd, const char * arch); |
1b7be377 | 55 | |
eb0cf671 | 56 | static FcBool |
1d879de2 | 57 | FcCacheCopyOld (int fd, int fd_orig, off_t start); |
1b7be377 | 58 | |
eb0cf671 PL |
59 | static void * |
60 | FcDirCacheProduce (FcFontSet *set, FcCache * metadata); | |
1b7be377 PL |
61 | |
62 | static FcBool | |
cd9bca69 | 63 | FcDirCacheConsume (int fd, const char * dir, FcFontSet *set, FcConfig *config); |
1b7be377 | 64 | |
eb0cf671 PL |
65 | static int |
66 | FcCacheNextOffset(off_t w); | |
1b7be377 | 67 | |
eb0cf671 PL |
68 | static char * |
69 | FcCacheMachineSignature (void); | |
1b7be377 PL |
70 | |
71 | static FcBool | |
eb0cf671 | 72 | FcCacheHaveBank (int bank); |
1b7be377 | 73 | |
e77c1718 PL |
74 | static void |
75 | FcCacheAddBankDir (int bank, const char * dir); | |
76 | ||
ea44e218 PL |
77 | struct MD5Context { |
78 | FcChar32 buf[4]; | |
79 | FcChar32 bits[2]; | |
80 | unsigned char in[64]; | |
81 | }; | |
82 | ||
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]); | |
87 | ||
eb0cf671 | 88 | #define FC_DBG_CACHE_REF 1024 |
1b7be377 | 89 | |
8245771d PL |
90 | static char * |
91 | FcCacheReadString (int fd, char *dest, int len) | |
24330d27 | 92 | { |
799157db PL |
93 | int size; |
94 | int slen; | |
24330d27 | 95 | |
24330d27 | 96 | if (len == 0) |
03a212e5 | 97 | return 0; |
799157db PL |
98 | |
99 | size = read (fd, dest, len-1); | |
100 | ||
101 | if (size > 0) | |
24330d27 | 102 | { |
799157db PL |
103 | dest[size] = '\0'; |
104 | slen = strlen (dest); | |
105 | ||
106 | lseek (fd, slen - size + 1, SEEK_CUR); | |
107 | return slen < len ? dest : 0; | |
24330d27 | 108 | } |
799157db | 109 | |
ccb3e93b | 110 | return 0; |
24330d27 KP |
111 | } |
112 | ||
ea44e218 PL |
113 | static void |
114 | FcCacheSkipString (int fd) | |
115 | { | |
799157db PL |
116 | char buf[256]; |
117 | int size; | |
118 | int slen; | |
ea44e218 | 119 | |
799157db | 120 | while ( (size = read (fd, buf, sizeof (buf)-1)) > 0) |
ea44e218 | 121 | { |
799157db PL |
122 | buf [size] = '\0'; |
123 | slen = strlen (buf); | |
124 | if (slen < size) | |
125 | { | |
126 | lseek (fd, slen - size + 1, SEEK_CUR); | |
127 | return; | |
128 | } | |
ea44e218 | 129 | } |
ea44e218 PL |
130 | } |
131 | ||
24330d27 | 132 | static FcBool |
8245771d | 133 | FcCacheWriteString (int fd, const char *chars) |
327a7fd4 | 134 | { |
212c9f43 | 135 | if (write (fd, chars, strlen(chars)+1) != strlen(chars)+1) |
327a7fd4 | 136 | return FcFalse; |
327a7fd4 KP |
137 | return FcTrue; |
138 | } | |
139 | ||
eb0cf671 PL |
140 | static void |
141 | FcGlobalCacheDirDestroy (FcGlobalCacheDir *d) | |
1b7be377 | 142 | { |
971cf180 | 143 | FcStrSetDestroy (d->subdirs); |
5e678e94 PL |
144 | FcMemFree (FC_MEM_STRING, strlen (d->name)+1); |
145 | free (d->name); | |
146 | FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCacheDir)); | |
147 | free (d); | |
1b7be377 PL |
148 | } |
149 | ||
eb0cf671 PL |
150 | FcGlobalCache * |
151 | FcGlobalCacheCreate (void) | |
1b7be377 | 152 | { |
eb0cf671 | 153 | FcGlobalCache *cache; |
1b7be377 | 154 | |
eb0cf671 PL |
155 | cache = malloc (sizeof (FcGlobalCache)); |
156 | if (!cache) | |
157 | return 0; | |
158 | FcMemAlloc (FC_MEM_CACHE, sizeof (FcGlobalCache)); | |
159 | cache->dirs = 0; | |
160 | cache->updated = FcFalse; | |
161 | cache->fd = -1; | |
162 | return cache; | |
1b7be377 PL |
163 | } |
164 | ||
eb0cf671 PL |
165 | void |
166 | FcGlobalCacheDestroy (FcGlobalCache *cache) | |
327a7fd4 | 167 | { |
eb0cf671 | 168 | FcGlobalCacheDir *d, *next; |
327a7fd4 | 169 | |
eb0cf671 | 170 | for (d = cache->dirs; d; d = next) |
327a7fd4 | 171 | { |
eb0cf671 PL |
172 | next = d->next; |
173 | FcGlobalCacheDirDestroy (d); | |
327a7fd4 | 174 | } |
eb0cf671 PL |
175 | FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCache)); |
176 | free (cache); | |
327a7fd4 KP |
177 | } |
178 | ||
179 | void | |
eb0cf671 | 180 | FcGlobalCacheLoad (FcGlobalCache *cache, |
03a212e5 | 181 | FcStrSet *staleDirs, |
2b25f00c PL |
182 | const FcChar8 *cache_file, |
183 | FcConfig *config) | |
327a7fd4 | 184 | { |
ea44e218 | 185 | char name_buf[FC_MAX_FILE_LEN]; |
eb0cf671 | 186 | FcGlobalCacheDir *d, *next; |
2b25f00c | 187 | FcFileTime config_time = FcConfigModifiedTime (config); |
eb0cf671 PL |
188 | char * current_arch_machine_name; |
189 | char candidate_arch_machine_name[MACHINE_SIGNATURE_SIZE + 9]; | |
190 | off_t current_arch_start; | |
327a7fd4 | 191 | |
03a212e5 | 192 | struct stat cache_stat, dir_stat; |
971cf180 | 193 | char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1]; |
03a212e5 PL |
194 | |
195 | if (stat ((char *) cache_file, &cache_stat) < 0) | |
196 | return; | |
197 | ||
879af706 | 198 | cache->fd = open ((char *) cache_file, O_RDONLY | O_BINARY); |
eb0cf671 PL |
199 | if (cache->fd == -1) |
200 | return; | |
327a7fd4 | 201 | |
eb0cf671 | 202 | cache->updated = FcFalse; |
327a7fd4 | 203 | |
c5411c4c | 204 | if (!FcCacheReadString (cache->fd, name_buf, sizeof (name_buf))) |
28aefd01 | 205 | goto bail_and_destroy; |
c60ec7cc | 206 | if (strcmp (name_buf, FC_GLOBAL_MAGIC_COOKIE) != 0) |
28aefd01 | 207 | goto bail_and_destroy; |
c60ec7cc | 208 | |
eb0cf671 PL |
209 | current_arch_machine_name = FcCacheMachineSignature (); |
210 | current_arch_start = FcCacheSkipToArch(cache->fd, | |
c60ec7cc | 211 | current_arch_machine_name); |
eb0cf671 | 212 | if (current_arch_start < 0) |
b17cf498 | 213 | goto bail1; |
327a7fd4 | 214 | |
eb0cf671 | 215 | lseek (cache->fd, current_arch_start, SEEK_SET); |
c5411c4c PL |
216 | if (!FcCacheReadString (cache->fd, candidate_arch_machine_name, |
217 | sizeof (candidate_arch_machine_name))) | |
218 | goto bail_and_destroy; | |
03a212e5 | 219 | if (strlen(candidate_arch_machine_name) == 0) |
e58b50e8 | 220 | goto bail_and_destroy; |
1b7be377 | 221 | |
eb0cf671 | 222 | while (1) |
1b7be377 | 223 | { |
8cb4c56d PL |
224 | off_t targ; |
225 | ||
2c4e0124 PL |
226 | if (!FcCacheReadString (cache->fd, name_buf, sizeof (name_buf)) || |
227 | !strlen(name_buf)) | |
1b7be377 | 228 | break; |
1b7be377 | 229 | |
9090cb9e PL |
230 | /* Directory must be older than the global cache file; also |
231 | cache must be newer than the config file. */ | |
03a212e5 | 232 | if (stat ((char *) name_buf, &dir_stat) < 0 || |
2b25f00c | 233 | dir_stat.st_mtime > cache_stat.st_mtime || |
9090cb9e | 234 | (config_time.set && cache_stat.st_mtime < config_time.time)) |
03a212e5 PL |
235 | { |
236 | FcCache md; | |
68355f38 | 237 | off_t off; |
03a212e5 | 238 | |
ae2aafe6 | 239 | FcStrSetAdd (staleDirs, (FcChar8 *)name_buf); |
fff5a5af PL |
240 | |
241 | /* skip subdirs */ | |
242 | while (FcCacheReadString (cache->fd, subdirName, | |
243 | sizeof (subdirName)) && | |
244 | strlen (subdirName)) | |
245 | ; | |
246 | ||
68355f38 PL |
247 | if (read (cache->fd, &md, sizeof (FcCache)) != sizeof(FcCache)) |
248 | { | |
249 | perror ("read metadata"); | |
250 | goto bail1; | |
251 | } | |
252 | off = FcCacheNextOffset (lseek(cache->fd, 0, SEEK_CUR)) + md.count; | |
fff5a5af PL |
253 | if (lseek (cache->fd, off, SEEK_SET) != off) |
254 | { | |
68355f38 PL |
255 | perror ("lseek"); |
256 | goto bail1; | |
257 | } | |
258 | continue; | |
03a212e5 PL |
259 | } |
260 | ||
eb0cf671 PL |
261 | d = malloc (sizeof (FcGlobalCacheDir)); |
262 | if (!d) | |
263 | goto bail1; | |
1b7be377 | 264 | |
eb0cf671 PL |
265 | d->next = cache->dirs; |
266 | cache->dirs = d; | |
1b7be377 | 267 | |
8245771d | 268 | d->name = (char *)FcStrCopy ((FcChar8 *)name_buf); |
eb0cf671 | 269 | d->ent = 0; |
fff5a5af | 270 | d->state = FcGCDirFileRead; |
971cf180 PL |
271 | |
272 | d->subdirs = FcStrSetCreate(); | |
2c4e0124 PL |
273 | do |
274 | { | |
275 | if (!FcCacheReadString (cache->fd, subdirName, | |
276 | sizeof (subdirName)) || | |
277 | !strlen (subdirName)) | |
278 | break; | |
971cf180 | 279 | FcStrSetAdd (d->subdirs, (FcChar8 *)subdirName); |
2c4e0124 | 280 | } while (1); |
971cf180 | 281 | |
81d97094 | 282 | d->offset = lseek (cache->fd, 0, SEEK_CUR); |
8cb4c56d PL |
283 | if (read (cache->fd, &d->metadata, sizeof (FcCache)) != sizeof (FcCache)) |
284 | goto bail1; | |
285 | targ = FcCacheNextOffset (lseek(cache->fd, 0, SEEK_CUR)) + d->metadata.count; | |
286 | if (lseek (cache->fd, targ, SEEK_SET) != targ) | |
287 | goto bail1; | |
1b7be377 | 288 | } |
eb0cf671 | 289 | return; |
1b7be377 | 290 | |
eb0cf671 PL |
291 | bail1: |
292 | for (d = cache->dirs; d; d = next) | |
1b7be377 | 293 | { |
eb0cf671 PL |
294 | next = d->next; |
295 | free (d); | |
1b7be377 | 296 | } |
eb0cf671 | 297 | cache->dirs = 0; |
e58b50e8 PL |
298 | |
299 | close (cache->fd); | |
300 | cache->fd = -1; | |
301 | return; | |
302 | ||
303 | bail_and_destroy: | |
eb0cf671 PL |
304 | close (cache->fd); |
305 | cache->fd = -1; | |
e58b50e8 PL |
306 | |
307 | if (stat ((char *) cache_file, &cache_stat) == 0) | |
308 | unlink ((char *)cache_file); | |
309 | ||
eb0cf671 | 310 | return; |
e58b50e8 | 311 | |
1b7be377 PL |
312 | } |
313 | ||
1b7be377 | 314 | FcBool |
8245771d | 315 | FcGlobalCacheReadDir (FcFontSet *set, FcStrSet *dirs, FcGlobalCache * cache, const char *dir, FcConfig *config) |
1b7be377 | 316 | { |
3616cbe2 | 317 | FcGlobalCacheDir *d; |
3616cbe2 | 318 | int i; |
1b7be377 | 319 | |
eb0cf671 | 320 | if (cache->fd == -1) |
1b7be377 | 321 | return FcFalse; |
1b7be377 | 322 | |
5c90509c PL |
323 | if (config) |
324 | if (!(dir = (char *)FcConfigNormalizeFontDir (config, (FcChar8 *)dir))) | |
325 | return FcFalse; /* non-existing directory */ | |
4073203d | 326 | |
eb0cf671 | 327 | for (d = cache->dirs; d; d = d->next) |
1b7be377 | 328 | { |
fff5a5af | 329 | if (strcmp (d->name, dir) == 0) |
1b7be377 | 330 | { |
fff5a5af | 331 | if (d->state == FcGCDirDisabled) |
eb0cf671 | 332 | return FcFalse; |
3616cbe2 | 333 | |
fff5a5af PL |
334 | if (d->state == FcGCDirFileRead) |
335 | { | |
336 | lseek (cache->fd, d->offset, SEEK_SET); | |
337 | if (!FcDirCacheConsume (cache->fd, d->name, set, config)) | |
338 | return FcFalse; | |
339 | ||
3616cbe2 PL |
340 | for (i = 0; i < d->subdirs->num; i++) |
341 | FcStrSetAdd (dirs, (FcChar8 *)d->subdirs->strs[i]); | |
342 | ||
fff5a5af PL |
343 | d->state = FcGCDirConsumed; |
344 | } | |
345 | return FcTrue; | |
1b7be377 | 346 | } |
1b7be377 | 347 | } |
1b7be377 | 348 | |
fff5a5af | 349 | return FcFalse; |
1b7be377 PL |
350 | } |
351 | ||
fff5a5af PL |
352 | static FcGlobalCacheDir * |
353 | FcGlobalCacheDirFind (FcGlobalCache *cache, const char *name) | |
354 | { | |
355 | FcGlobalCacheDir * d; | |
356 | ||
357 | if (!cache || !name) | |
358 | return NULL; | |
359 | ||
360 | for (d = cache->dirs; d; d = d->next) | |
361 | if (strcmp((const char *)d->name, (const char *)name) == 0) | |
362 | return d; | |
363 | ||
364 | return NULL; | |
365 | } | |
366 | ||
eb0cf671 PL |
367 | FcBool |
368 | FcGlobalCacheUpdate (FcGlobalCache *cache, | |
971cf180 | 369 | FcStrSet *dirs, |
fff5a5af | 370 | const char *orig_name, |
8a0b0ed6 PL |
371 | FcFontSet *set, |
372 | FcConfig *config) | |
1b7be377 | 373 | { |
971cf180 PL |
374 | FcGlobalCacheDir *d; |
375 | int i; | |
fff5a5af | 376 | const char *name; |
1b7be377 | 377 | |
fff5a5af PL |
378 | name = (char *)FcConfigNormalizeFontDir (config, (FcChar8 *)orig_name); |
379 | if (!name) | |
1b7be377 | 380 | { |
fff5a5af PL |
381 | fprintf(stderr, "Invalid directory name %s\n", orig_name); |
382 | return FcFalse; | |
24330d27 | 383 | } |
24330d27 | 384 | |
fff5a5af PL |
385 | d = FcGlobalCacheDirFind (cache, name); |
386 | ||
eb0cf671 | 387 | if (!d) |
24330d27 | 388 | { |
eb0cf671 PL |
389 | d = malloc (sizeof (FcGlobalCacheDir)); |
390 | if (!d) | |
391 | return FcFalse; | |
392 | d->next = cache->dirs; | |
393 | cache->dirs = d; | |
fff5a5af PL |
394 | } else { |
395 | /* free old resources */ | |
396 | FcStrFree ((FcChar8 *)d->name); | |
397 | free (d->ent); | |
398 | FcStrSetDestroy (d->subdirs); | |
24330d27 | 399 | } |
24330d27 | 400 | |
eb0cf671 | 401 | cache->updated = FcTrue; |
24330d27 | 402 | |
8245771d | 403 | d->name = (char *)FcStrCopy ((FcChar8 *)name); |
eb0cf671 PL |
404 | d->ent = FcDirCacheProduce (set, &d->metadata); |
405 | d->offset = 0; | |
971cf180 | 406 | d->subdirs = FcStrSetCreate(); |
fff5a5af | 407 | d->state = FcGCDirUpdated; |
971cf180 PL |
408 | for (i = 0; i < dirs->num; i++) |
409 | FcStrSetAdd (d->subdirs, dirs->strs[i]); | |
eb0cf671 | 410 | return FcTrue; |
24330d27 KP |
411 | } |
412 | ||
413 | FcBool | |
327a7fd4 | 414 | FcGlobalCacheSave (FcGlobalCache *cache, |
8a0b0ed6 PL |
415 | const FcChar8 *cache_file, |
416 | FcConfig *config) | |
24330d27 | 417 | { |
0d745819 | 418 | int fd, fd_orig; |
327a7fd4 | 419 | FcGlobalCacheDir *dir; |
327a7fd4 | 420 | FcAtomic *atomic; |
eb0cf671 PL |
421 | off_t current_arch_start = 0, truncate_to; |
422 | char * current_arch_machine_name, * header; | |
24330d27 | 423 | |
eb0cf671 | 424 | if (!cache->updated) |
24330d27 KP |
425 | return FcTrue; |
426 | ||
daeed6e0 | 427 | #if defined (HAVE_GETUID) && defined (HAVE_GETEUID) |
a391da8f KP |
428 | /* Set-UID programs can't safely update the cache */ |
429 | if (getuid () != geteuid ()) | |
430 | return FcFalse; | |
daeed6e0 | 431 | #endif |
a391da8f | 432 | |
134f6011 KP |
433 | atomic = FcAtomicCreate (cache_file); |
434 | if (!atomic) | |
1d879de2 PL |
435 | return FcFalse; |
436 | ||
134f6011 | 437 | if (!FcAtomicLock (atomic)) |
24330d27 | 438 | goto bail1; |
879af706 | 439 | fd = open ((char *) FcAtomicNewFile(atomic), O_RDWR | O_CREAT | O_BINARY, |
eb0cf671 PL |
440 | S_IRUSR | S_IWUSR); |
441 | if (fd == -1) | |
24330d27 | 442 | goto bail2; |
f468f568 | 443 | FcCacheWriteString (fd, FC_GLOBAL_MAGIC_COOKIE); |
24330d27 | 444 | |
879af706 | 445 | fd_orig = open ((char *) FcAtomicOrigFile(atomic), O_RDONLY | O_BINARY); |
1d879de2 | 446 | |
eb0cf671 | 447 | current_arch_machine_name = FcCacheMachineSignature (); |
1d879de2 PL |
448 | if (fd_orig == -1) |
449 | current_arch_start = 0; | |
450 | else | |
451 | current_arch_start = FcCacheSkipToArch (fd_orig, | |
c60ec7cc | 452 | current_arch_machine_name); |
1d879de2 | 453 | |
eb0cf671 | 454 | if (current_arch_start < 0) |
f468f568 PL |
455 | { |
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); | |
460 | } | |
eb0cf671 | 461 | |
1d879de2 PL |
462 | if (!FcCacheCopyOld(fd, fd_orig, current_arch_start)) |
463 | goto bail3; | |
464 | ||
eb0cf671 | 465 | current_arch_start = lseek(fd, 0, SEEK_CUR); |
d6217cc6 | 466 | #if defined (HAVE_FTRUNCATE) |
eb0cf671 | 467 | if (ftruncate (fd, current_arch_start) == -1) |
1d879de2 | 468 | goto bail3; |
d6217cc6 PL |
469 | #else |
470 | #if defined (HAVE_CHSIZE) | |
471 | if (chsize (fd, current_arch_start) == -1) | |
472 | goto bail3; | |
473 | #else | |
474 | goto bail3; | |
475 | #endif | |
476 | #endif | |
eb0cf671 | 477 | |
03a212e5 PL |
478 | header = malloc (10 + strlen (current_arch_machine_name)); |
479 | if (!header) | |
1d879de2 | 480 | goto bail3; |
03a212e5 | 481 | |
8cb4c56d | 482 | truncate_to = current_arch_start + strlen(current_arch_machine_name) + 11; |
eb0cf671 | 483 | for (dir = cache->dirs; dir; dir = dir->next) |
24330d27 | 484 | { |
0d745819 PL |
485 | int i; |
486 | ||
fff5a5af PL |
487 | if (dir->state == FcGCDirDisabled) |
488 | continue; | |
eb0cf671 PL |
489 | truncate_to += strlen(dir->name) + 1; |
490 | truncate_to += sizeof (FcCache); | |
1c5b6345 | 491 | truncate_to = FcCacheNextOffset (truncate_to); |
eb0cf671 | 492 | truncate_to += dir->metadata.count; |
971cf180 PL |
493 | |
494 | for (i = 0; i < dir->subdirs->size; i++) | |
495 | truncate_to += strlen((char *)dir->subdirs->strs[i]) + 1; | |
496 | truncate_to ++; | |
eb0cf671 PL |
497 | } |
498 | truncate_to -= current_arch_start; | |
eb0cf671 | 499 | |
8cb4c56d PL |
500 | sprintf (header, "%8x ", (int)truncate_to); |
501 | strcat (header, current_arch_machine_name); | |
502 | if (!FcCacheWriteString (fd, header)) | |
1d879de2 | 503 | goto bail4; |
8cb4c56d | 504 | |
c814c301 PL |
505 | free (header); |
506 | ||
eb0cf671 PL |
507 | for (dir = cache->dirs; dir; dir = dir->next) |
508 | { | |
0d745819 | 509 | int i; |
fff5a5af PL |
510 | const char * d; |
511 | off_t off; | |
971cf180 | 512 | |
fff5a5af PL |
513 | if (!dir->name || dir->state == FcGCDirDisabled) |
514 | continue; | |
515 | d = (const char *)FcConfigNormalizeFontDir (config, (const FcChar8 *)dir->name); | |
516 | if (!d) | |
517 | continue; | |
971cf180 | 518 | |
fff5a5af PL |
519 | if (dir->metadata.count && !dir->ent) |
520 | { | |
521 | if (dir->state == FcGCDirUpdated || fd_orig < 0) | |
68355f38 | 522 | { |
fff5a5af | 523 | fprintf(stderr, "Invalid metadata entry for %s, skipping...\n", d); |
68355f38 PL |
524 | continue; |
525 | } | |
fff5a5af PL |
526 | /* copy the old content */ |
527 | dir->ent = malloc (dir->metadata.count); | |
528 | if (!dir->ent) | |
68355f38 | 529 | { |
fff5a5af | 530 | perror("malloc error"); |
68355f38 PL |
531 | continue; |
532 | } | |
fff5a5af PL |
533 | off = FcCacheNextOffset (dir->offset + sizeof(FcCache)); |
534 | if (lseek (fd_orig, off, SEEK_SET) != off) | |
535 | { | |
536 | perror("lseek"); | |
537 | free(dir->ent); | |
538 | continue; | |
539 | } | |
540 | if (read (fd_orig, dir->ent, dir->metadata.count) | |
541 | != dir->metadata.count) | |
542 | { | |
543 | perror("read"); | |
544 | free(dir->ent); | |
545 | continue; | |
546 | } | |
547 | } | |
548 | ||
549 | FcCacheWriteString (fd, d); | |
550 | ||
551 | for (i = 0; i < dir->subdirs->size; i++) | |
552 | FcCacheWriteString (fd, (char *)dir->subdirs->strs[i]); | |
553 | FcCacheWriteString (fd, ""); | |
554 | ||
555 | if (write (fd, &dir->metadata, sizeof(FcCache)) != sizeof(FcCache)) | |
556 | { | |
557 | perror ("write metadata"); | |
558 | free (dir->ent); | |
559 | continue; | |
560 | } | |
561 | off = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR)); | |
562 | if (lseek (fd, off, SEEK_SET) != off) | |
563 | { | |
564 | perror ("lseek"); | |
565 | free (dir->ent); | |
566 | continue; | |
567 | } | |
568 | if (dir->metadata.count) | |
569 | { | |
68355f38 PL |
570 | if (write (fd, dir->ent, dir->metadata.count) != dir->metadata.count) |
571 | { | |
572 | perror ("write dirent"); | |
573 | free (dir->ent); | |
574 | continue; | |
575 | } | |
68355f38 | 576 | } |
fff5a5af | 577 | free (dir->ent); |
24330d27 | 578 | } |
eb0cf671 | 579 | FcCacheWriteString (fd, ""); |
24330d27 | 580 | |
eb0cf671 | 581 | if (close (fd) == -1) |
1d879de2 | 582 | goto bail25; |
fff5a5af PL |
583 | |
584 | close (fd_orig); | |
585 | fd_orig = -1; | |
24330d27 | 586 | |
134f6011 | 587 | if (!FcAtomicReplaceOrig (atomic)) |
1d879de2 | 588 | goto bail25; |
24330d27 | 589 | |
134f6011 KP |
590 | FcAtomicUnlock (atomic); |
591 | FcAtomicDestroy (atomic); | |
592 | ||
24330d27 KP |
593 | cache->updated = FcFalse; |
594 | return FcTrue; | |
595 | ||
1d879de2 PL |
596 | bail4: |
597 | free (header); | |
598 | bail3: | |
599 | if (fd_orig != -1) | |
600 | close (fd_orig); | |
601 | ||
602 | close (fd); | |
603 | bail25: | |
134f6011 | 604 | FcAtomicDeleteNew (atomic); |
1d879de2 | 605 | bail2: |
134f6011 | 606 | FcAtomicUnlock (atomic); |
1d879de2 | 607 | bail1: |
134f6011 | 608 | FcAtomicDestroy (atomic); |
24330d27 KP |
609 | return FcFalse; |
610 | } | |
611 | ||
212c9f43 | 612 | /* |
eb0cf671 PL |
613 | * Find the next presumably-mmapable offset after the supplied file |
614 | * position. | |
212c9f43 | 615 | */ |
4262e0b3 PL |
616 | static int |
617 | FcCacheNextOffset(off_t w) | |
179c3995 | 618 | { |
7fd7221e PL |
619 | static long pagesize = -1; |
620 | if (pagesize == -1) | |
d6217cc6 | 621 | #if defined (HAVE_SYSCONF) |
7fd7221e | 622 | pagesize = sysconf(_SC_PAGESIZE); |
d6217cc6 PL |
623 | #else |
624 | pagesize = FC_HARDCODED_PAGESIZE; | |
625 | #endif | |
7fd7221e | 626 | if (w % pagesize == 0) |
212c9f43 PL |
627 | return w; |
628 | else | |
7fd7221e | 629 | return ((w / pagesize)+1)*pagesize; |
179c3995 KP |
630 | } |
631 | ||
212c9f43 PL |
632 | /* return the address of the segment for the provided arch, |
633 | * or -1 if arch not found */ | |
634 | static off_t | |
c60ec7cc | 635 | FcCacheSkipToArch (int fd, const char * arch) |
212c9f43 | 636 | { |
2dbe7597 PL |
637 | char candidate_arch_machine_name_count[MACHINE_SIGNATURE_SIZE + 9]; |
638 | char * candidate_arch; | |
212c9f43 PL |
639 | off_t current_arch_start = 0; |
640 | ||
ea44e218 | 641 | lseek (fd, 0, SEEK_SET); |
c60ec7cc | 642 | FcCacheSkipString (fd); |
ea44e218 PL |
643 | current_arch_start = lseek (fd, 0, SEEK_CUR); |
644 | ||
212c9f43 PL |
645 | /* skip arches that are not the current arch */ |
646 | while (1) | |
647 | { | |
648 | long bs; | |
649 | ||
8cb4c56d PL |
650 | if (lseek (fd, current_arch_start, SEEK_SET) != current_arch_start) |
651 | return -1; | |
652 | ||
eb0cf671 | 653 | if (FcCacheReadString (fd, candidate_arch_machine_name_count, |
2dbe7597 | 654 | sizeof (candidate_arch_machine_name_count)) == 0) |
5e678e94 | 655 | return -1; |
2dbe7597 PL |
656 | if (!strlen(candidate_arch_machine_name_count)) |
657 | return -1; | |
658 | bs = strtol(candidate_arch_machine_name_count, &candidate_arch, 16); | |
8cb4c56d | 659 | |
bb6b1993 | 660 | /* count = 0 should probably be distinguished from the !bs condition */ |
8cb4c56d PL |
661 | if (!bs || bs < strlen (candidate_arch_machine_name_count)) |
662 | return -1; | |
663 | ||
2dbe7597 | 664 | candidate_arch++; /* skip leading space */ |
212c9f43 | 665 | |
2dbe7597 | 666 | if (strcmp (candidate_arch, arch)==0) |
5e678e94 | 667 | return current_arch_start; |
212c9f43 | 668 | current_arch_start += bs; |
b17cf498 | 669 | current_arch_start = FcCacheNextOffset (current_arch_start); |
212c9f43 | 670 | } |
212c9f43 PL |
671 | } |
672 | ||
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 | |
675 | * file. */ | |
212c9f43 | 676 | static FcBool |
1d879de2 | 677 | FcCacheCopyOld (int fd, int fd_orig, off_t start) |
212c9f43 | 678 | { |
eb0cf671 | 679 | char * buf = malloc (8192); |
2dbe7597 | 680 | char candidate_arch_machine_name[MACHINE_SIGNATURE_SIZE + 9]; |
4262e0b3 | 681 | long bs; |
212c9f43 | 682 | int c, bytes_skipped; |
1d879de2 | 683 | off_t loc; |
212c9f43 PL |
684 | |
685 | if (!buf) | |
686 | return FcFalse; | |
687 | ||
1d879de2 PL |
688 | loc = 0; |
689 | lseek (fd, 0, SEEK_SET); lseek (fd_orig, 0, SEEK_SET); | |
719f4b84 | 690 | FcCacheSkipString (fd); FcCacheSkipString (fd_orig); |
1d879de2 PL |
691 | do |
692 | { | |
693 | int b = 8192; | |
694 | if (loc + b > start) | |
695 | b = start - loc; | |
696 | ||
697 | if ((c = read (fd_orig, buf, b)) <= 0) | |
698 | break; | |
699 | if (write (fd, buf, c) < 0) | |
700 | goto bail; | |
701 | ||
702 | loc += c; | |
703 | } | |
704 | while (c > 0); | |
705 | ||
212c9f43 | 706 | lseek (fd, start, SEEK_SET); |
eb0cf671 | 707 | if (FcCacheReadString (fd, candidate_arch_machine_name, |
212c9f43 PL |
708 | sizeof (candidate_arch_machine_name)) == 0) |
709 | goto done; | |
2dbe7597 | 710 | if (!strlen(candidate_arch_machine_name)) |
212c9f43 PL |
711 | goto done; |
712 | ||
2dbe7597 | 713 | bs = strtol(candidate_arch_machine_name, 0, 16); |
212c9f43 PL |
714 | if (bs == 0) |
715 | goto done; | |
716 | ||
717 | bytes_skipped = 0; | |
718 | do | |
719 | { | |
720 | lseek (fd, start+bs+bytes_skipped, SEEK_SET); | |
eb0cf671 | 721 | if ((c = read (fd, buf, 8192)) <= 0) |
212c9f43 PL |
722 | break; |
723 | lseek (fd, start+bytes_skipped, SEEK_SET); | |
724 | if (write (fd, buf, c) < 0) | |
725 | goto bail; | |
726 | bytes_skipped += c; | |
727 | } | |
728 | while (c > 0); | |
729 | lseek (fd, start+bytes_skipped, SEEK_SET); | |
730 | ||
731 | done: | |
732 | free (buf); | |
733 | return FcTrue; | |
734 | ||
735 | bail: | |
736 | free (buf); | |
737 | return FcFalse; | |
738 | } | |
739 | ||
55c8fa4f | 740 | /* Does not check that the cache has the appropriate arch section. */ |
ec760b17 PL |
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! */ | |
1b7be377 PL |
744 | FcBool |
745 | FcDirCacheValid (const FcChar8 *dir) | |
746 | { | |
1b7be377 | 747 | struct stat file_stat, dir_stat; |
ea44e218 | 748 | int fd; |
1b7be377 PL |
749 | |
750 | if (stat ((char *) dir, &dir_stat) < 0) | |
1b7be377 | 751 | return FcFalse; |
6bf23804 | 752 | |
df3efc11 | 753 | fd = FcDirCacheOpen (dir); |
ea44e218 PL |
754 | |
755 | if (fd < 0) | |
c7490074 | 756 | return FcFalse; |
ea44e218 | 757 | if (fstat (fd, &file_stat) < 0) |
df3efc11 | 758 | goto bail; |
ea44e218 PL |
759 | |
760 | close (fd); | |
ea44e218 | 761 | |
55c8fa4f PL |
762 | /* |
763 | * If the directory has been modified more recently than | |
764 | * the cache file, the cache is not valid | |
765 | */ | |
2b25f00c | 766 | if (dir_stat.st_mtime > file_stat.st_mtime) |
55c8fa4f | 767 | return FcFalse; |
2b25f00c | 768 | |
55c8fa4f | 769 | return FcTrue; |
ea44e218 | 770 | |
ea44e218 | 771 | bail: |
df3efc11 | 772 | close (fd); |
ea44e218 | 773 | return FcFalse; |
55c8fa4f PL |
774 | } |
775 | ||
776 | /* Assumes that the cache file in 'dir' exists. | |
777 | * Checks that the cache has the appropriate arch section. */ | |
778 | FcBool | |
779 | FcDirCacheHasCurrentArch (const FcChar8 *dir) | |
780 | { | |
55c8fa4f PL |
781 | int fd; |
782 | off_t current_arch_start; | |
783 | char *current_arch_machine_name; | |
8c0d6921 | 784 | FcCache metadata; |
a68ce952 | 785 | char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1]; |
55c8fa4f | 786 | |
df3efc11 | 787 | fd = FcDirCacheOpen (dir); |
ea44e218 PL |
788 | if (fd < 0) |
789 | goto bail; | |
790 | ||
791 | current_arch_machine_name = FcCacheMachineSignature(); | |
c60ec7cc | 792 | current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name); |
8c0d6921 PL |
793 | |
794 | if (current_arch_start >= 0) | |
795 | { | |
a68ce952 PL |
796 | if (lseek (fd, current_arch_start, SEEK_SET) != current_arch_start) |
797 | goto bail1; | |
798 | ||
799 | FcCacheSkipString (fd); | |
800 | ||
801 | while (FcCacheReadString (fd, subdirName, sizeof (subdirName)) && strlen (subdirName) > 0) | |
802 | ; | |
803 | ||
8c0d6921 | 804 | if (read(fd, &metadata, sizeof(FcCache)) != sizeof(FcCache)) |
a68ce952 | 805 | goto bail1; |
8c0d6921 PL |
806 | |
807 | if (metadata.magic != FC_CACHE_MAGIC) | |
a68ce952 | 808 | goto bail1; |
8c0d6921 PL |
809 | } |
810 | ||
6bf23804 PL |
811 | close (fd); |
812 | ||
813 | if (current_arch_start < 0) | |
814 | return FcFalse; | |
55c8fa4f PL |
815 | |
816 | return FcTrue; | |
ea44e218 | 817 | |
a68ce952 PL |
818 | bail1: |
819 | close (fd); | |
ea44e218 | 820 | bail: |
ea44e218 | 821 | return FcFalse; |
55c8fa4f | 822 | } |
6bf23804 | 823 | |
55c8fa4f | 824 | FcBool |
8a0b0ed6 | 825 | FcDirCacheUnlink (const FcChar8 *dir, FcConfig *config) |
55c8fa4f | 826 | { |
8a0b0ed6 | 827 | char *cache_file; |
6f9fcb51 | 828 | char *cache_hashed = 0; |
3bfae75d | 829 | int fd, collisions; |
15d7bd0a | 830 | struct stat cache_stat; |
3bfae75d | 831 | char name_buf[FC_MAX_FILE_LEN]; |
55c8fa4f | 832 | |
8a0b0ed6 PL |
833 | dir = FcConfigNormalizeFontDir (config, dir); |
834 | cache_file = (char *)FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE); | |
df3efc11 PL |
835 | if (!cache_file) |
836 | return FcFalse; | |
837 | ||
3bfae75d | 838 | /* First remove normal cache file. */ |
719f4b84 PL |
839 | if (stat ((char *) cache_file, &cache_stat) == 0) |
840 | unlink ((char *)cache_file); | |
3bfae75d PL |
841 | |
842 | /* Next remove any applicable hashed files. */ | |
843 | fd = -1; collisions = 0; | |
844 | do | |
1178b569 | 845 | { |
6f9fcb51 PL |
846 | if (cache_hashed) |
847 | FcStrFree ((FcChar8 *)cache_hashed); | |
848 | ||
3bfae75d PL |
849 | cache_hashed = FcDirCacheHashName (cache_file, collisions++); |
850 | if (!cache_hashed) | |
851 | goto bail; | |
852 | ||
853 | if (fd > 0) | |
854 | close (fd); | |
879af706 | 855 | fd = open(cache_hashed, O_RDONLY | O_BINARY); |
3bfae75d PL |
856 | if (fd == -1) |
857 | { | |
3ea92166 | 858 | FcStrFree ((FcChar8 *)cache_hashed); |
3bfae75d PL |
859 | FcStrFree ((FcChar8 *)cache_file); |
860 | return FcTrue; | |
861 | } | |
862 | ||
c5411c4c | 863 | if (!FcCacheReadString (fd, name_buf, sizeof (name_buf)) || !strlen(name_buf)) |
6f9fcb51 PL |
864 | { |
865 | FcStrFree ((FcChar8 *)cache_hashed); | |
3bfae75d | 866 | goto bail; |
6f9fcb51 | 867 | } |
3bfae75d PL |
868 | } while (strcmp (name_buf, cache_file) != 0); |
869 | ||
3bfae75d PL |
870 | close (fd); |
871 | ||
872 | if (stat ((char *) cache_hashed, &cache_stat) == 0 && | |
873 | unlink ((char *)cache_hashed) != 0) | |
874 | { | |
875 | FcStrFree ((FcChar8 *)cache_hashed); | |
876 | goto bail; | |
1178b569 | 877 | } |
55c8fa4f | 878 | |
1af0f574 | 879 | FcStrFree ((FcChar8 *)cache_file); |
3bfae75d | 880 | FcStrFree ((FcChar8 *)cache_hashed); |
1b7be377 | 881 | return FcTrue; |
3bfae75d PL |
882 | |
883 | bail: | |
884 | FcStrFree ((FcChar8 *)cache_file); | |
885 | return FcFalse; | |
1b7be377 PL |
886 | } |
887 | ||
4262e0b3 | 888 | static int |
1b7be377 | 889 | FcCacheReadDirs (FcConfig * config, FcGlobalCache * cache, |
8b413bb6 | 890 | FcStrList *list, FcFontSet * set, FcStrSet *processed_dirs) |
4262e0b3 | 891 | { |
4262e0b3 PL |
892 | int ret = 0; |
893 | FcChar8 *dir; | |
4262e0b3 PL |
894 | FcStrSet *subdirs; |
895 | FcStrList *sublist; | |
896 | struct stat statb; | |
fff5a5af | 897 | FcGlobalCacheDir *d; |
4262e0b3 PL |
898 | |
899 | /* | |
03a212e5 | 900 | * Read in the results from 'list'. |
4262e0b3 PL |
901 | */ |
902 | while ((dir = FcStrListNext (list))) | |
903 | { | |
9fad72ab PL |
904 | if (!FcConfigAcceptFilename (config, dir)) |
905 | continue; | |
906 | ||
fff5a5af PL |
907 | /* Skip this directory if already updated |
908 | * to avoid the looped directories via symlinks | |
5c3deb29 | 909 | * Clearly a dir not in fonts.conf shouldn't be globally cached. |
fff5a5af | 910 | */ |
b10e7762 | 911 | dir = (FcChar8 *)FcConfigNormalizeFontDir (config, dir); |
5c3deb29 PL |
912 | if (!dir) |
913 | continue; | |
914 | ||
915 | if (FcStrSetMember (processed_dirs, dir)) | |
916 | continue; | |
917 | if (!FcStrSetAdd (processed_dirs, dir)) | |
918 | continue; | |
4262e0b3 PL |
919 | |
920 | subdirs = FcStrSetCreate (); | |
921 | if (!subdirs) | |
922 | { | |
923 | fprintf (stderr, "Can't create directory set\n"); | |
924 | ret++; | |
4262e0b3 PL |
925 | continue; |
926 | } | |
927 | ||
928 | if (access ((char *) dir, X_OK) < 0) | |
929 | { | |
930 | switch (errno) { | |
931 | case ENOENT: | |
932 | case ENOTDIR: | |
933 | case EACCES: | |
934 | break; | |
935 | default: | |
936 | fprintf (stderr, "\"%s\": ", dir); | |
937 | perror (""); | |
938 | ret++; | |
939 | } | |
940 | FcStrSetDestroy (subdirs); | |
4262e0b3 PL |
941 | continue; |
942 | } | |
943 | if (stat ((char *) dir, &statb) == -1) | |
944 | { | |
945 | fprintf (stderr, "\"%s\": ", dir); | |
946 | perror (""); | |
947 | FcStrSetDestroy (subdirs); | |
948 | ret++; | |
4262e0b3 PL |
949 | continue; |
950 | } | |
951 | if (!S_ISDIR (statb.st_mode)) | |
952 | { | |
953 | fprintf (stderr, "\"%s\": not a directory, skipping\n", dir); | |
954 | FcStrSetDestroy (subdirs); | |
4262e0b3 PL |
955 | continue; |
956 | } | |
530e66b0 PL |
957 | if (FcDirCacheValid (dir) && |
958 | FcDirCacheHasCurrentArch (dir) && | |
959 | FcDirCacheRead (set, subdirs, dir, config)) | |
fff5a5af PL |
960 | { |
961 | /* if an old entry is found in the global cache, disable it */ | |
5c3deb29 | 962 | if ((d = FcGlobalCacheDirFind (cache, (const char *)dir)) != NULL) |
fff5a5af PL |
963 | { |
964 | d->state = FcGCDirDisabled; | |
965 | /* save the updated config later without this entry */ | |
966 | cache->updated = FcTrue; | |
967 | } | |
968 | } | |
969 | else | |
4262e0b3 | 970 | { |
1b7be377 | 971 | if (FcDebug () & FC_DBG_FONTSET) |
03a212e5 | 972 | printf ("cache scan dir %s\n", dir); |
2304e38f | 973 | |
1b7be377 PL |
974 | FcDirScanConfig (set, subdirs, cache, |
975 | config->blanks, dir, FcFalse, config); | |
4262e0b3 PL |
976 | } |
977 | sublist = FcStrListCreate (subdirs); | |
978 | FcStrSetDestroy (subdirs); | |
979 | if (!sublist) | |
980 | { | |
981 | fprintf (stderr, "Can't create subdir list in \"%s\"\n", dir); | |
982 | ret++; | |
4262e0b3 PL |
983 | continue; |
984 | } | |
8b413bb6 | 985 | ret += FcCacheReadDirs (config, cache, sublist, set, processed_dirs); |
4262e0b3 PL |
986 | } |
987 | FcStrListDone (list); | |
988 | return ret; | |
989 | } | |
990 | ||
991 | FcFontSet * | |
1b7be377 | 992 | FcCacheRead (FcConfig *config, FcGlobalCache * cache) |
4262e0b3 | 993 | { |
8b413bb6 PL |
994 | FcFontSet *s = FcFontSetCreate(); |
995 | FcStrSet *processed_dirs; | |
996 | ||
4262e0b3 PL |
997 | if (!s) |
998 | return 0; | |
999 | ||
8b413bb6 PL |
1000 | processed_dirs = FcStrSetCreate(); |
1001 | if (!processed_dirs) | |
4262e0b3 PL |
1002 | goto bail; |
1003 | ||
8b413bb6 PL |
1004 | if (FcCacheReadDirs (config, cache, FcConfigGetConfigDirs (config), s, processed_dirs)) |
1005 | goto bail1; | |
1006 | ||
1007 | FcStrSetDestroy (processed_dirs); | |
4262e0b3 PL |
1008 | return s; |
1009 | ||
8b413bb6 PL |
1010 | bail1: |
1011 | FcStrSetDestroy (processed_dirs); | |
4262e0b3 PL |
1012 | bail: |
1013 | FcFontSetDestroy (s); | |
1014 | return 0; | |
1015 | } | |
1016 | ||
ea44e218 PL |
1017 | static const char bin2hex[] = { '0', '1', '2', '3', |
1018 | '4', '5', '6', '7', | |
1019 | '8', '9', 'a', 'b', | |
1020 | 'c', 'd', 'e', 'f' }; | |
1021 | ||
1022 | static char * | |
1023 | FcDirCacheHashName (char * cache_file, int collisions) | |
1024 | { | |
1025 | unsigned char hash[16], hex_hash[33]; | |
1026 | char *cache_hashed; | |
1027 | unsigned char uscore = '_'; | |
1028 | int cnt, i; | |
1029 | FcChar8 *tmp; | |
1030 | struct MD5Context ctx; | |
1031 | ||
1032 | MD5Init (&ctx); | |
1033 | MD5Update (&ctx, (unsigned char *)cache_file, strlen (cache_file)); | |
1034 | ||
1035 | for (i = 0; i < collisions; i++) | |
1036 | MD5Update (&ctx, &uscore, 1); | |
1037 | ||
1038 | MD5Final (hash, &ctx); | |
1039 | ||
1040 | for (cnt = 0; cnt < 16; ++cnt) | |
1041 | { | |
1042 | hex_hash[2*cnt] = bin2hex[hash[cnt] >> 4]; | |
1043 | hex_hash[2*cnt+1] = bin2hex[hash[cnt] & 0xf]; | |
1044 | } | |
1045 | hex_hash[32] = 0; | |
1046 | ||
1047 | tmp = FcStrPlus ((FcChar8 *)hex_hash, (FcChar8 *)FC_CACHE_SUFFIX); | |
1048 | if (!tmp) | |
1049 | return 0; | |
1050 | ||
83b67390 | 1051 | cache_hashed = (char *)FcStrPlus ((FcChar8 *)PKGCACHEDIR"/", tmp); |
ea44e218 PL |
1052 | free (tmp); |
1053 | ||
1054 | return cache_hashed; | |
1055 | } | |
1056 | ||
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. */ | |
1060 | static int | |
df3efc11 | 1061 | FcDirCacheOpen (const FcChar8 *dir) |
ea44e218 | 1062 | { |
df3efc11 | 1063 | FcBool found; |
ea44e218 | 1064 | int fd = -1, collisions = 0; |
df3efc11 | 1065 | char *cache_file, *cache_hashed; |
ea44e218 | 1066 | char name_buf[FC_MAX_FILE_LEN]; |
df3efc11 PL |
1067 | struct stat dir_stat; |
1068 | ||
d00c3cb5 | 1069 | if (stat ((char *)dir, &dir_stat) == -1) |
df3efc11 | 1070 | return -1; |
ea44e218 | 1071 | |
d00c3cb5 PL |
1072 | cache_file = (char *)FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE); |
1073 | if (!cache_file) | |
df3efc11 PL |
1074 | return -1; |
1075 | ||
8a0b0ed6 | 1076 | found = FcFalse; |
ea44e218 PL |
1077 | do |
1078 | { | |
d00c3cb5 PL |
1079 | struct stat c; |
1080 | FcChar8 *name_buf_dir; | |
1081 | ||
1082 | if (fd >= 0) | |
1083 | close (fd); | |
df3efc11 | 1084 | |
ea44e218 PL |
1085 | cache_hashed = FcDirCacheHashName (cache_file, collisions++); |
1086 | if (!cache_hashed) | |
575a37b7 PL |
1087 | { |
1088 | FcStrFree ((FcChar8 *)cache_file); | |
ea44e218 | 1089 | return -1; |
575a37b7 | 1090 | } |
ea44e218 | 1091 | |
879af706 | 1092 | fd = open(cache_hashed, O_RDONLY | O_BINARY); |
3bfae75d PL |
1093 | FcStrFree ((FcChar8 *)cache_hashed); |
1094 | ||
ea44e218 | 1095 | if (fd == -1) |
d00c3cb5 PL |
1096 | break; |
1097 | if (!FcCacheReadString (fd, name_buf, sizeof (name_buf)) || | |
1098 | !strlen(name_buf)) | |
1099 | break; | |
df3efc11 PL |
1100 | |
1101 | name_buf_dir = FcStrDirname ((FcChar8 *)name_buf); | |
1102 | if (stat ((char *)name_buf_dir, &c) == -1) | |
1103 | { | |
1104 | FcStrFree (name_buf_dir); | |
1105 | continue; | |
1106 | } | |
1107 | FcStrFree (name_buf_dir); | |
575a37b7 | 1108 | found = (c.st_ino == dir_stat.st_ino) && (c.st_dev == dir_stat.st_dev); |
df3efc11 | 1109 | } while (!found); |
ea44e218 | 1110 | |
d00c3cb5 PL |
1111 | if (!found || fd < 0) |
1112 | { | |
1113 | if (fd >= 0) | |
1114 | close (fd); | |
1115 | fd = open(cache_file, O_RDONLY | O_BINARY); | |
1116 | } | |
1117 | ||
575a37b7 | 1118 | FcStrFree ((FcChar8 *)cache_file); |
d00c3cb5 | 1119 | return fd; |
ea44e218 PL |
1120 | } |
1121 | ||
212c9f43 | 1122 | /* read serialized state from the cache file */ |
2eb84374 | 1123 | FcBool |
cd9bca69 | 1124 | FcDirCacheRead (FcFontSet * set, FcStrSet * dirs, const FcChar8 *dir, FcConfig *config) |
212c9f43 | 1125 | { |
ea44e218 PL |
1126 | int fd; |
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]; | |
212c9f43 | 1131 | |
df3efc11 | 1132 | fd = FcDirCacheOpen (dir); |
ea44e218 PL |
1133 | if (fd < 0) |
1134 | goto bail; | |
212c9f43 | 1135 | |
ea44e218 PL |
1136 | current_arch_machine_name = FcCacheMachineSignature(); |
1137 | current_arch_start = FcCacheSkipToArch(fd, | |
c60ec7cc | 1138 | current_arch_machine_name); |
212c9f43 | 1139 | if (current_arch_start < 0) |
4262e0b3 | 1140 | goto bail1; |
212c9f43 PL |
1141 | |
1142 | lseek (fd, current_arch_start, SEEK_SET); | |
eb0cf671 | 1143 | if (FcCacheReadString (fd, candidate_arch_machine_name, |
212c9f43 | 1144 | sizeof (candidate_arch_machine_name)) == 0) |
4262e0b3 | 1145 | goto bail1; |
2304e38f | 1146 | |
c5411c4c | 1147 | while (FcCacheReadString (fd, subdirName, sizeof (subdirName)) && strlen (subdirName) > 0) |
8245771d | 1148 | FcStrSetAdd (dirs, (FcChar8 *)subdirName); |
2304e38f | 1149 | |
cd9bca69 | 1150 | if (!FcDirCacheConsume (fd, (const char *)dir, set, config)) |
eb0cf671 PL |
1151 | goto bail1; |
1152 | ||
1153 | close(fd); | |
eb0cf671 PL |
1154 | return FcTrue; |
1155 | ||
1156 | bail1: | |
2304e38f | 1157 | close (fd); |
eb0cf671 | 1158 | bail: |
eb0cf671 PL |
1159 | return FcFalse; |
1160 | } | |
1161 | ||
1162 | static FcBool | |
cd9bca69 | 1163 | FcDirCacheConsume (int fd, const char * dir, FcFontSet *set, FcConfig *config) |
eb0cf671 PL |
1164 | { |
1165 | FcCache metadata; | |
1166 | void * current_dir_block; | |
fd77c154 | 1167 | off_t pos; |
212c9f43 | 1168 | |
68355f38 PL |
1169 | if (read(fd, &metadata, sizeof(FcCache)) != sizeof(FcCache)) |
1170 | return FcFalse; | |
212c9f43 | 1171 | if (metadata.magic != FC_CACHE_MAGIC) |
eb0cf671 | 1172 | return FcFalse; |
212c9f43 | 1173 | |
2dbe7597 | 1174 | if (!metadata.count) |
05a98eaf PL |
1175 | { |
1176 | pos = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR)); | |
1177 | lseek (fd, pos, SEEK_SET); | |
eadadf48 PL |
1178 | if (config) |
1179 | FcConfigAddFontDir (config, (FcChar8 *)dir); | |
eb0cf671 | 1180 | return FcTrue; |
05a98eaf | 1181 | } |
2dbe7597 | 1182 | |
fd77c154 | 1183 | pos = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR)); |
d6217cc6 | 1184 | #if defined(HAVE_MMAP) || defined(__CYGWIN__) |
2dbe7597 PL |
1185 | current_dir_block = mmap (0, metadata.count, |
1186 | PROT_READ, MAP_SHARED, fd, pos); | |
1187 | if (current_dir_block == MAP_FAILED) | |
eb0cf671 | 1188 | return FcFalse; |
d6217cc6 PL |
1189 | #else |
1190 | current_dir_block = malloc (metadata.count); | |
1191 | if (!current_dir_block) | |
1192 | return FcFalse; | |
1193 | ||
1194 | /* could also use CreateMappedViewOfFile under MinGW... */ | |
1195 | if (read (fd, current_dir_block, metadata.count) != metadata.count) | |
1196 | goto bail; | |
1197 | #endif | |
1198 | lseek (fd, pos+metadata.count, SEEK_SET); | |
eb0cf671 | 1199 | |
e77c1718 | 1200 | FcCacheAddBankDir (metadata.bank, dir); |
cd9bca69 PL |
1201 | if (config) |
1202 | FcConfigAddFontDir (config, (FcChar8 *)dir); | |
e77c1718 | 1203 | |
b8948e85 | 1204 | if (!FcFontSetUnserialize (&metadata, set, current_dir_block)) |
d6217cc6 | 1205 | goto bail; |
b8948e85 | 1206 | |
212c9f43 | 1207 | return FcTrue; |
d6217cc6 PL |
1208 | bail: |
1209 | #if !(defined(HAVE_MMAP) || defined(__CYGWIN__)) | |
1210 | free (current_dir_block); | |
1211 | #endif | |
1212 | return FcFalse; | |
eb0cf671 PL |
1213 | } |
1214 | ||
1215 | static void * | |
1216 | FcDirCacheProduce (FcFontSet *set, FcCache *metadata) | |
1217 | { | |
1218 | void * current_dir_block, * final_dir_block; | |
8245771d | 1219 | static unsigned int rand_state = 0; |
8e351527 | 1220 | int bank, needed_bytes_no_align; |
eb0cf671 | 1221 | |
d6217cc6 | 1222 | #if defined (HAVE_RAND_R) |
eb0cf671 PL |
1223 | if (!rand_state) |
1224 | rand_state = time(0L); | |
1225 | bank = rand_r(&rand_state); | |
1226 | ||
1227 | while (FcCacheHaveBank(bank)) | |
1228 | bank = rand_r(&rand_state); | |
d6217cc6 PL |
1229 | #else |
1230 | if (!rand_state) | |
1231 | { | |
1232 | rand_state = 1; | |
1233 | srand (time (0L)); | |
1234 | } | |
1235 | bank = rand(); | |
1236 | ||
1237 | while (FcCacheHaveBank(bank)) | |
1238 | bank = rand(); | |
1239 | #endif | |
eb0cf671 PL |
1240 | |
1241 | memset (metadata, 0, sizeof(FcCache)); | |
1242 | FcFontSetNewBank(); | |
8e351527 PL |
1243 | needed_bytes_no_align = FcFontSetNeededBytes (set); |
1244 | metadata->count = needed_bytes_no_align + | |
7fd7221e | 1245 | FcFontSetNeededBytesAlign (); |
eb0cf671 PL |
1246 | metadata->magic = FC_CACHE_MAGIC; |
1247 | metadata->bank = bank; | |
1248 | ||
8e351527 PL |
1249 | if (!needed_bytes_no_align) /* not a failure, no fonts to write */ |
1250 | { | |
1251 | /* no, you don't really need to write any bytes at all. */ | |
1252 | metadata->count = 0; | |
eb0cf671 | 1253 | return 0; |
8e351527 | 1254 | } |
eb0cf671 PL |
1255 | |
1256 | current_dir_block = malloc (metadata->count); | |
1257 | if (!current_dir_block) | |
1258 | goto bail; | |
bb6b1993 | 1259 | /* shut up valgrind */ |
8e351527 | 1260 | memset (current_dir_block, 0, metadata->count); |
eb0cf671 PL |
1261 | final_dir_block = FcFontSetDistributeBytes (metadata, current_dir_block); |
1262 | ||
8e351527 | 1263 | if ((void *)((char *)current_dir_block+metadata->count) < final_dir_block) |
eb0cf671 PL |
1264 | goto bail; |
1265 | ||
1266 | if (!FcFontSetSerialize (bank, set)) | |
1267 | goto bail; | |
1268 | ||
1269 | return current_dir_block; | |
212c9f43 | 1270 | |
4262e0b3 | 1271 | bail: |
eb0cf671 PL |
1272 | free (current_dir_block); |
1273 | return 0; | |
212c9f43 PL |
1274 | } |
1275 | ||
1276 | /* write serialized state to the cache file */ | |
1277 | FcBool | |
2304e38f | 1278 | FcDirCacheWrite (FcFontSet *set, FcStrSet *dirs, const FcChar8 *dir) |
212c9f43 | 1279 | { |
ea44e218 | 1280 | char *cache_file; |
3bfae75d | 1281 | char *cache_hashed; |
1d879de2 PL |
1282 | int fd, fd_orig, i, dirs_count; |
1283 | FcAtomic *atomic; | |
1284 | FcCache metadata; | |
1285 | off_t current_arch_start = 0, truncate_to; | |
ea44e218 PL |
1286 | char name_buf[FC_MAX_FILE_LEN]; |
1287 | int collisions; | |
8245771d | 1288 | |
1d879de2 | 1289 | char *current_arch_machine_name, * header; |
ea44e218 | 1290 | void *current_dir_block = 0; |
212c9f43 | 1291 | |
cd9bca69 PL |
1292 | dir = FcConfigNormalizeFontDir (FcConfigGetCurrent(), dir); |
1293 | if (!dir) | |
1294 | return FcFalse; | |
1295 | ||
ea44e218 | 1296 | cache_file = (char *)FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE); |
4262e0b3 PL |
1297 | if (!cache_file) |
1298 | goto bail; | |
1299 | ||
ea44e218 PL |
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; | |
1304 | do | |
1305 | { | |
3bfae75d PL |
1306 | cache_hashed = FcDirCacheHashName (cache_file, collisions++); |
1307 | if (!cache_hashed) | |
ea44e218 PL |
1308 | goto bail0; |
1309 | ||
1310 | if (fd > 0) | |
1311 | close (fd); | |
879af706 | 1312 | fd = open(cache_hashed, O_RDONLY | O_BINARY); |
ea44e218 PL |
1313 | if (fd == -1) |
1314 | break; | |
c5411c4c PL |
1315 | if(!FcCacheReadString (fd, name_buf, sizeof (name_buf)) || !strlen(name_buf)) |
1316 | { | |
1317 | close (fd); | |
ae2aafe6 | 1318 | FcStrFree ((FcChar8 *)cache_hashed); |
c7490074 | 1319 | continue; |
c5411c4c PL |
1320 | } |
1321 | close (fd); | |
ea44e218 | 1322 | |
ae2aafe6 PL |
1323 | if (strcmp (name_buf, cache_file) != 0) |
1324 | { | |
1325 | FcStrFree ((FcChar8 *)cache_hashed); | |
ea44e218 | 1326 | continue; |
ae2aafe6 | 1327 | } |
c7490074 PL |
1328 | |
1329 | break; | |
1330 | } while (1); | |
ea44e218 | 1331 | |
eb0cf671 | 1332 | current_dir_block = FcDirCacheProduce (set, &metadata); |
212c9f43 | 1333 | |
a9698bed | 1334 | if (metadata.count && !current_dir_block) |
ea44e218 | 1335 | goto bail1; |
212c9f43 | 1336 | |
4262e0b3 PL |
1337 | if (FcDebug () & FC_DBG_CACHE) |
1338 | printf ("FcDirCacheWriteDir cache_file \"%s\"\n", cache_file); | |
1339 | ||
3bfae75d | 1340 | atomic = FcAtomicCreate ((FcChar8 *)cache_hashed); |
1d879de2 | 1341 | if (!atomic) |
ea44e218 | 1342 | goto bail1; |
212c9f43 | 1343 | |
1d879de2 | 1344 | if (!FcAtomicLock (atomic)) |
ec760b17 PL |
1345 | { |
1346 | /* Now try rewriting the original version of the file. */ | |
1347 | FcAtomicDestroy (atomic); | |
1d879de2 | 1348 | |
3bfae75d | 1349 | atomic = FcAtomicCreate ((FcChar8 *)cache_file); |
879af706 | 1350 | fd_orig = open (cache_file, O_RDONLY | O_BINARY); |
ec760b17 | 1351 | if (fd_orig == -1) |
879af706 | 1352 | fd_orig = open((char *)FcAtomicOrigFile (atomic), O_RDONLY | O_BINARY); |
ec760b17 | 1353 | |
879af706 | 1354 | fd = open((char *)FcAtomicNewFile (atomic), O_RDWR | O_CREAT | O_BINARY, 0666); |
ec760b17 PL |
1355 | if (fd == -1) |
1356 | goto bail2; | |
1357 | } | |
1358 | ||
1359 | /* In all cases, try opening the real location of the cache file first. */ | |
1360 | /* (even if that's not atomic.) */ | |
879af706 | 1361 | fd_orig = open (cache_file, O_RDONLY | O_BINARY); |
ec760b17 | 1362 | if (fd_orig == -1) |
879af706 | 1363 | fd_orig = open((char *)FcAtomicOrigFile (atomic), O_RDONLY | O_BINARY); |
1d879de2 | 1364 | |
879af706 | 1365 | fd = open((char *)FcAtomicNewFile (atomic), O_RDWR | O_CREAT | O_BINARY, 0666); |
1d879de2 | 1366 | if (fd == -1) |
ec760b17 | 1367 | goto bail3; |
ea44e218 PL |
1368 | |
1369 | FcCacheWriteString (fd, cache_file); | |
1d879de2 | 1370 | |
eb0cf671 | 1371 | current_arch_machine_name = FcCacheMachineSignature (); |
1d879de2 PL |
1372 | current_arch_start = 0; |
1373 | ||
1374 | if (fd_orig != -1) | |
1375 | current_arch_start = | |
c60ec7cc | 1376 | FcCacheSkipToArch(fd_orig, current_arch_machine_name); |
1d879de2 | 1377 | |
212c9f43 | 1378 | if (current_arch_start < 0) |
f468f568 | 1379 | { |
0d745819 PL |
1380 | off_t offset = lseek(fd_orig, 0, SEEK_END); |
1381 | current_arch_start = FcCacheNextOffset (offset); | |
f468f568 | 1382 | } |
212c9f43 | 1383 | |
1d879de2 | 1384 | if (fd_orig != -1 && !FcCacheCopyOld(fd, fd_orig, current_arch_start)) |
ea44e218 | 1385 | goto bail4; |
1d879de2 PL |
1386 | |
1387 | if (fd_orig != -1) | |
1388 | close (fd_orig); | |
212c9f43 PL |
1389 | |
1390 | current_arch_start = lseek(fd, 0, SEEK_CUR); | |
d6217cc6 | 1391 | #if defined (HAVE_FTRUNCATE) |
212c9f43 | 1392 | if (ftruncate (fd, current_arch_start) == -1) |
ea44e218 | 1393 | goto bail4; |
d6217cc6 PL |
1394 | #else |
1395 | #if defined (HAVE_CHSIZE) | |
1396 | if (chsize (fd, current_arch_start) == -1) | |
1397 | goto bail4; | |
1398 | #else | |
1399 | goto bail4; | |
1400 | #endif | |
1401 | #endif | |
212c9f43 | 1402 | |
6aee8c6f PL |
1403 | /* allocate space for subdir names in this block */ |
1404 | dirs_count = 0; | |
1405 | for (i = 0; i < dirs->size; i++) | |
1406 | dirs_count += strlen((char *)dirs->strs[i]) + 1; | |
1407 | dirs_count ++; | |
1408 | ||
212c9f43 | 1409 | /* now write the address of the next offset */ |
6aee8c6f | 1410 | truncate_to = FcCacheNextOffset (FcCacheNextOffset (current_arch_start + sizeof (FcCache) + dirs_count) + metadata.count) - current_arch_start; |
2dbe7597 | 1411 | header = malloc (10 + strlen (current_arch_machine_name)); |
eb0cf671 | 1412 | if (!header) |
ea44e218 | 1413 | goto bail4; |
2dbe7597 PL |
1414 | sprintf (header, "%8x ", (int)truncate_to); |
1415 | strcat (header, current_arch_machine_name); | |
eb0cf671 | 1416 | if (!FcCacheWriteString (fd, header)) |
ea44e218 | 1417 | goto bail5; |
212c9f43 | 1418 | |
2304e38f | 1419 | for (i = 0; i < dirs->size; i++) |
8245771d | 1420 | FcCacheWriteString (fd, (char *)dirs->strs[i]); |
2304e38f PL |
1421 | FcCacheWriteString (fd, ""); |
1422 | ||
fff5a5af PL |
1423 | if (write (fd, &metadata, sizeof(FcCache)) != sizeof(FcCache)) |
1424 | { | |
68355f38 PL |
1425 | perror("write metadata"); |
1426 | goto bail5; | |
1427 | } | |
a9698bed PL |
1428 | if (metadata.count) |
1429 | { | |
68355f38 PL |
1430 | off_t off = FcCacheNextOffset (lseek(fd, 0, SEEK_END)); |
1431 | if (lseek (fd, off, SEEK_SET) != off) | |
1432 | perror("lseek"); | |
1433 | else if (write (fd, current_dir_block, metadata.count) != | |
1434 | metadata.count) | |
1435 | perror("write current_dir_block"); | |
a9698bed | 1436 | free (current_dir_block); |
f2fb985c | 1437 | current_dir_block = 0; |
a9698bed | 1438 | } |
4262e0b3 | 1439 | |
2dbe7597 | 1440 | /* this actually serves to pad out the cache file, if needed */ |
d6217cc6 | 1441 | #if defined (HAVE_FTRUNCATE) |
212c9f43 | 1442 | if (ftruncate (fd, current_arch_start + truncate_to) == -1) |
ea44e218 | 1443 | goto bail5; |
d6217cc6 PL |
1444 | #else |
1445 | #if defined (HAVE_CHSIZE) | |
1446 | if (chsize (fd, current_arch_start + truncate_to) == -1) | |
1447 | goto bail5; | |
1448 | #else | |
1449 | goto bail5; | |
1450 | #endif | |
1451 | #endif | |
212c9f43 | 1452 | |
6f9fcb51 | 1453 | free (header); |
212c9f43 | 1454 | close(fd); |
1d879de2 | 1455 | if (!FcAtomicReplaceOrig(atomic)) |
ae2aafe6 | 1456 | goto bail3; |
3bfae75d | 1457 | FcStrFree ((FcChar8 *)cache_hashed); |
575a37b7 | 1458 | FcStrFree ((FcChar8 *)cache_file); |
1d879de2 PL |
1459 | FcAtomicUnlock (atomic); |
1460 | FcAtomicDestroy (atomic); | |
212c9f43 PL |
1461 | return FcTrue; |
1462 | ||
ea44e218 | 1463 | bail5: |
0230c9f8 | 1464 | free (header); |
ea44e218 | 1465 | bail4: |
1d879de2 | 1466 | close (fd); |
ea44e218 | 1467 | bail3: |
1d879de2 | 1468 | FcAtomicUnlock (atomic); |
ea44e218 | 1469 | bail2: |
1d879de2 | 1470 | FcAtomicDestroy (atomic); |
ea44e218 | 1471 | bail1: |
3bfae75d | 1472 | FcStrFree ((FcChar8 *)cache_hashed); |
eb0cf671 | 1473 | bail0: |
8245771d | 1474 | unlink ((char *)cache_file); |
575a37b7 | 1475 | FcStrFree ((FcChar8 *)cache_file); |
1d879de2 PL |
1476 | if (current_dir_block) |
1477 | free (current_dir_block); | |
1478 | bail: | |
212c9f43 PL |
1479 | return FcFalse; |
1480 | } | |
1481 | ||
2dbe7597 | 1482 | static char * |
eb0cf671 | 1483 | FcCacheMachineSignature () |
2dbe7597 PL |
1484 | { |
1485 | static char buf[MACHINE_SIGNATURE_SIZE]; | |
7fd7221e | 1486 | int32_t magic = ENDIAN_TEST; |
2dbe7597 PL |
1487 | char * m = (char *)&magic; |
1488 | ||
1489 | sprintf (buf, "%2x%2x%2x%2x " | |
1490 | "%4x %4x %4x %4x %4x %4x %4x %4x %4x %4x %4x %4x " | |
7fd7221e | 1491 | "%4x %4x %4x %4x %4x %4x %4x %4x\n", |
2dbe7597 | 1492 | m[0], m[1], m[2], m[3], |
cd310911 PL |
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), | |
7fd7221e | 1511 | (unsigned int)sizeof (FcCache), |
d6217cc6 | 1512 | #if defined (HAVE_SYSCONF) |
7fd7221e | 1513 | (unsigned int)sysconf(_SC_PAGESIZE)); |
d6217cc6 PL |
1514 | #else |
1515 | (unsigned int)FC_HARDCODED_PAGESIZE); | |
1516 | #endif | |
2dbe7597 PL |
1517 | |
1518 | return buf; | |
1519 | } | |
1520 | ||
4262e0b3 | 1521 | static int banks_ptr = 0, banks_alloc = 0; |
b8948e85 | 1522 | int * _fcBankId = 0, * _fcBankIdx = 0; |
e77c1718 | 1523 | static const char ** bankDirs = 0; |
4262e0b3 | 1524 | |
eb0cf671 | 1525 | static FcBool |
4262e0b3 PL |
1526 | FcCacheHaveBank (int bank) |
1527 | { | |
1528 | int i; | |
1529 | ||
1530 | if (bank < FC_BANK_FIRST) | |
1531 | return FcTrue; | |
1532 | ||
1533 | for (i = 0; i < banks_ptr; i++) | |
b8948e85 | 1534 | if (_fcBankId[i] == bank) |
4262e0b3 PL |
1535 | return FcTrue; |
1536 | ||
1537 | return FcFalse; | |
1538 | } | |
1539 | ||
1540 | int | |
b8948e85 | 1541 | FcCacheBankToIndexMTF (int bank) |
4262e0b3 | 1542 | { |
751932dd | 1543 | int i, j; |
4262e0b3 PL |
1544 | |
1545 | for (i = 0; i < banks_ptr; i++) | |
b8948e85 | 1546 | if (_fcBankId[_fcBankIdx[i]] == bank) |
751932dd | 1547 | { |
b8948e85 | 1548 | int t = _fcBankIdx[i]; |
751932dd PL |
1549 | |
1550 | for (j = i; j > 0; j--) | |
b8948e85 PL |
1551 | _fcBankIdx[j] = _fcBankIdx[j-1]; |
1552 | _fcBankIdx[0] = t; | |
751932dd PL |
1553 | return t; |
1554 | } | |
4262e0b3 | 1555 | |
2dbe7597 | 1556 | if (banks_ptr >= banks_alloc) |
4262e0b3 | 1557 | { |
751932dd | 1558 | int * b, * bidx; |
e77c1718 PL |
1559 | const char ** bds; |
1560 | ||
b8948e85 | 1561 | b = realloc (_fcBankId, (banks_alloc + 4) * sizeof(int)); |
4262e0b3 PL |
1562 | if (!b) |
1563 | return -1; | |
b8948e85 | 1564 | _fcBankId = b; |
751932dd | 1565 | |
b8948e85 | 1566 | bidx = realloc (_fcBankIdx, (banks_alloc + 4) * sizeof(int)); |
751932dd PL |
1567 | if (!bidx) |
1568 | return -1; | |
b8948e85 | 1569 | _fcBankIdx = bidx; |
751932dd | 1570 | |
e77c1718 PL |
1571 | bds = realloc (bankDirs, (banks_alloc + 4) * sizeof (char *)); |
1572 | if (!bds) | |
1573 | return -1; | |
1574 | bankDirs = bds; | |
1575 | ||
4262e0b3 PL |
1576 | banks_alloc += 4; |
1577 | } | |
1578 | ||
1579 | i = banks_ptr++; | |
b8948e85 PL |
1580 | _fcBankId[i] = bank; |
1581 | _fcBankIdx[i] = i; | |
4262e0b3 PL |
1582 | return i; |
1583 | } | |
e77c1718 PL |
1584 | |
1585 | static void | |
1586 | FcCacheAddBankDir (int bank, const char * dir) | |
1587 | { | |
b8948e85 | 1588 | int bi = FcCacheBankToIndexMTF (bank); |
e77c1718 PL |
1589 | |
1590 | if (bi < 0) | |
1591 | return; | |
1592 | ||
1593 | bankDirs[bi] = (const char *)FcStrCopy ((FcChar8 *)dir); | |
1594 | } | |
1595 | ||
1596 | const char * | |
1597 | FcCacheFindBankDir (int bank) | |
1598 | { | |
1599 | int bi = FcCacheBankToIndex (bank); | |
1600 | return bankDirs[bi]; | |
1601 | } | |
1602 | ||
ea44e218 PL |
1603 | /* |
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. | |
1608 | * | |
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 | |
1612 | * with every copy. | |
1613 | * | |
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. | |
1618 | */ | |
1619 | ||
1620 | #ifndef HIGHFIRST | |
1621 | #define byteReverse(buf, len) /* Nothing */ | |
1622 | #else | |
1623 | /* | |
1624 | * Note: this code is harmless on little-endian machines. | |
1625 | */ | |
1626 | void byteReverse(unsigned char *buf, unsigned longs) | |
1627 | { | |
1628 | FcChar32 t; | |
1629 | do { | |
1630 | t = (FcChar32) ((unsigned) buf[3] << 8 | buf[2]) << 16 | | |
1631 | ((unsigned) buf[1] << 8 | buf[0]); | |
1632 | *(FcChar32 *) buf = t; | |
1633 | buf += 4; | |
1634 | } while (--longs); | |
1635 | } | |
1636 | #endif | |
1637 | ||
1638 | /* | |
1639 | * Start MD5 accumulation. Set bit count to 0 and buffer to mysterious | |
1640 | * initialization constants. | |
1641 | */ | |
1642 | static void MD5Init(struct MD5Context *ctx) | |
1643 | { | |
1644 | ctx->buf[0] = 0x67452301; | |
1645 | ctx->buf[1] = 0xefcdab89; | |
1646 | ctx->buf[2] = 0x98badcfe; | |
1647 | ctx->buf[3] = 0x10325476; | |
1648 | ||
1649 | ctx->bits[0] = 0; | |
1650 | ctx->bits[1] = 0; | |
1651 | } | |
1652 | ||
1653 | /* | |
1654 | * Update context to reflect the concatenation of another buffer full | |
1655 | * of bytes. | |
1656 | */ | |
1657 | static void MD5Update(struct MD5Context *ctx, unsigned char *buf, unsigned len) | |
1658 | { | |
1659 | FcChar32 t; | |
1660 | ||
1661 | /* Update bitcount */ | |
1662 | ||
1663 | t = ctx->bits[0]; | |
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; | |
1667 | ||
1668 | t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data */ | |
1669 | ||
1670 | /* Handle any leading odd-sized chunks */ | |
1671 | ||
1672 | if (t) { | |
1673 | unsigned char *p = (unsigned char *) ctx->in + t; | |
1674 | ||
1675 | t = 64 - t; | |
1676 | if (len < t) { | |
1677 | memcpy(p, buf, len); | |
1678 | return; | |
1679 | } | |
1680 | memcpy(p, buf, t); | |
1681 | byteReverse(ctx->in, 16); | |
1682 | MD5Transform(ctx->buf, (FcChar32 *) ctx->in); | |
1683 | buf += t; | |
1684 | len -= t; | |
1685 | } | |
1686 | /* Process data in 64-byte chunks */ | |
1687 | ||
1688 | while (len >= 64) { | |
1689 | memcpy(ctx->in, buf, 64); | |
1690 | byteReverse(ctx->in, 16); | |
1691 | MD5Transform(ctx->buf, (FcChar32 *) ctx->in); | |
1692 | buf += 64; | |
1693 | len -= 64; | |
1694 | } | |
1695 | ||
1696 | /* Handle any remaining bytes of data. */ | |
1697 | ||
1698 | memcpy(ctx->in, buf, len); | |
1699 | } | |
1700 | ||
1701 | /* | |
1702 | * Final wrapup - pad to 64-byte boundary with the bit pattern | |
1703 | * 1 0* (64-bit count of bits processed, MSB-first) | |
1704 | */ | |
1705 | static void MD5Final(unsigned char digest[16], struct MD5Context *ctx) | |
1706 | { | |
1707 | unsigned count; | |
1708 | unsigned char *p; | |
1709 | ||
1710 | /* Compute number of bytes mod 64 */ | |
1711 | count = (ctx->bits[0] >> 3) & 0x3F; | |
1712 | ||
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; | |
1716 | *p++ = 0x80; | |
1717 | ||
1718 | /* Bytes of padding needed to make 64 bytes */ | |
1719 | count = 64 - 1 - count; | |
1720 | ||
1721 | /* Pad out to 56 mod 64 */ | |
1722 | if (count < 8) { | |
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); | |
1727 | ||
1728 | /* Now fill the next block with 56 bytes */ | |
1729 | memset(ctx->in, 0, 56); | |
1730 | } else { | |
1731 | /* Pad block to 56 bytes */ | |
1732 | memset(p, 0, count - 8); | |
1733 | } | |
1734 | byteReverse(ctx->in, 14); | |
1735 | ||
1736 | /* Append length in bits and transform */ | |
1737 | ((FcChar32 *) ctx->in)[14] = ctx->bits[0]; | |
1738 | ((FcChar32 *) ctx->in)[15] = ctx->bits[1]; | |
1739 | ||
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 */ | |
1744 | } | |
1745 | ||
1746 | ||
1747 | /* The four core functions - F1 is optimized somewhat */ | |
1748 | ||
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)) | |
1754 | ||
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 ) | |
1758 | ||
1759 | /* | |
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. | |
1763 | */ | |
1764 | static void MD5Transform(FcChar32 buf[4], FcChar32 in[16]) | |
1765 | { | |
1766 | register FcChar32 a, b, c, d; | |
1767 | ||
1768 | a = buf[0]; | |
1769 | b = buf[1]; | |
1770 | c = buf[2]; | |
1771 | d = buf[3]; | |
1772 | ||
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); | |
1789 | ||
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); | |
1806 | ||
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); | |
1823 | ||
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); | |
1840 | ||
1841 | buf[0] += a; | |
1842 | buf[1] += b; | |
1843 | buf[2] += c; | |
1844 | buf[3] += d; | |
1845 | } |