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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> |
212c9f43 PL |
29 | #include <sys/mman.h> |
30 | #include <sys/utsname.h> | |
fd77c154 PL |
31 | #include <sys/types.h> |
32 | #include <unistd.h> | |
24330d27 | 33 | #include "fcint.h" |
7fd7221e | 34 | #include <unistd.h> |
24330d27 | 35 | |
2dbe7597 | 36 | #define ENDIAN_TEST 0x12345678 |
7fd7221e | 37 | #define MACHINE_SIGNATURE_SIZE 9 + 5*20 + 1 |
2dbe7597 | 38 | |
ea44e218 | 39 | static int |
df3efc11 | 40 | FcDirCacheOpen (const FcChar8 * dir); |
ea44e218 PL |
41 | |
42 | static char * | |
43 | FcDirCacheHashName (char * cache_file, int collisions); | |
44 | ||
eb0cf671 | 45 | static off_t |
c60ec7cc | 46 | FcCacheSkipToArch (int fd, const char * arch); |
1b7be377 | 47 | |
eb0cf671 | 48 | static FcBool |
1d879de2 | 49 | FcCacheCopyOld (int fd, int fd_orig, off_t start); |
1b7be377 | 50 | |
eb0cf671 PL |
51 | static void * |
52 | FcDirCacheProduce (FcFontSet *set, FcCache * metadata); | |
1b7be377 PL |
53 | |
54 | static FcBool | |
cd9bca69 | 55 | FcDirCacheConsume (int fd, const char * dir, FcFontSet *set, FcConfig *config); |
1b7be377 | 56 | |
eb0cf671 PL |
57 | static int |
58 | FcCacheNextOffset(off_t w); | |
1b7be377 | 59 | |
eb0cf671 PL |
60 | static char * |
61 | FcCacheMachineSignature (void); | |
1b7be377 PL |
62 | |
63 | static FcBool | |
eb0cf671 | 64 | FcCacheHaveBank (int bank); |
1b7be377 | 65 | |
e77c1718 PL |
66 | static void |
67 | FcCacheAddBankDir (int bank, const char * dir); | |
68 | ||
ea44e218 PL |
69 | struct MD5Context { |
70 | FcChar32 buf[4]; | |
71 | FcChar32 bits[2]; | |
72 | unsigned char in[64]; | |
73 | }; | |
74 | ||
75 | static void MD5Init(struct MD5Context *ctx); | |
76 | static void MD5Update(struct MD5Context *ctx, unsigned char *buf, unsigned len); | |
77 | static void MD5Final(unsigned char digest[16], struct MD5Context *ctx); | |
78 | static void MD5Transform(FcChar32 buf[4], FcChar32 in[16]); | |
79 | ||
eb0cf671 | 80 | #define FC_DBG_CACHE_REF 1024 |
1b7be377 | 81 | |
8245771d PL |
82 | static char * |
83 | FcCacheReadString (int fd, char *dest, int len) | |
24330d27 | 84 | { |
212c9f43 | 85 | FcChar8 c; |
ccb3e93b | 86 | FcBool escape; |
ccb3e93b KP |
87 | int size; |
88 | int i; | |
24330d27 | 89 | |
24330d27 | 90 | if (len == 0) |
03a212e5 | 91 | return 0; |
24330d27 | 92 | |
ccb3e93b KP |
93 | size = len; |
94 | i = 0; | |
24330d27 | 95 | escape = FcFalse; |
212c9f43 | 96 | while (read (fd, &c, 1) == 1) |
24330d27 KP |
97 | { |
98 | if (!escape) | |
99 | { | |
100 | switch (c) { | |
101 | case '"': | |
ccb3e93b KP |
102 | c = '\0'; |
103 | break; | |
24330d27 KP |
104 | case '\\': |
105 | escape = FcTrue; | |
106 | continue; | |
107 | } | |
108 | } | |
ccb3e93b KP |
109 | if (i == size) |
110 | { | |
212c9f43 PL |
111 | dest[i++] = 0; |
112 | return dest; | |
ccb3e93b | 113 | } |
212c9f43 | 114 | dest[i++] = c; |
ccb3e93b | 115 | if (c == '\0') |
212c9f43 | 116 | return dest; |
24330d27 KP |
117 | escape = FcFalse; |
118 | } | |
ccb3e93b | 119 | return 0; |
24330d27 KP |
120 | } |
121 | ||
ea44e218 PL |
122 | static void |
123 | FcCacheSkipString (int fd) | |
124 | { | |
125 | FcChar8 c; | |
126 | FcBool escape; | |
127 | ||
128 | escape = FcFalse; | |
129 | while (read (fd, &c, 1) == 1) | |
130 | { | |
131 | if (!escape) | |
132 | { | |
133 | switch (c) { | |
134 | case '"': | |
135 | c = '\0'; | |
136 | break; | |
137 | case '\\': | |
138 | escape = FcTrue; | |
139 | continue; | |
140 | } | |
141 | } | |
142 | if (c == '\0') | |
143 | return; | |
144 | escape = FcFalse; | |
145 | } | |
146 | return; | |
147 | } | |
148 | ||
24330d27 | 149 | static FcBool |
8245771d | 150 | FcCacheWriteString (int fd, const char *chars) |
327a7fd4 | 151 | { |
212c9f43 | 152 | if (write (fd, chars, strlen(chars)+1) != strlen(chars)+1) |
327a7fd4 | 153 | return FcFalse; |
327a7fd4 KP |
154 | return FcTrue; |
155 | } | |
156 | ||
eb0cf671 PL |
157 | static void |
158 | FcGlobalCacheDirDestroy (FcGlobalCacheDir *d) | |
1b7be377 | 159 | { |
971cf180 | 160 | FcStrSetDestroy (d->subdirs); |
5e678e94 PL |
161 | FcMemFree (FC_MEM_STRING, strlen (d->name)+1); |
162 | free (d->name); | |
163 | FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCacheDir)); | |
164 | free (d); | |
1b7be377 PL |
165 | } |
166 | ||
eb0cf671 PL |
167 | FcGlobalCache * |
168 | FcGlobalCacheCreate (void) | |
1b7be377 | 169 | { |
eb0cf671 | 170 | FcGlobalCache *cache; |
1b7be377 | 171 | |
eb0cf671 PL |
172 | cache = malloc (sizeof (FcGlobalCache)); |
173 | if (!cache) | |
174 | return 0; | |
175 | FcMemAlloc (FC_MEM_CACHE, sizeof (FcGlobalCache)); | |
176 | cache->dirs = 0; | |
177 | cache->updated = FcFalse; | |
178 | cache->fd = -1; | |
179 | return cache; | |
1b7be377 PL |
180 | } |
181 | ||
eb0cf671 PL |
182 | void |
183 | FcGlobalCacheDestroy (FcGlobalCache *cache) | |
327a7fd4 | 184 | { |
eb0cf671 | 185 | FcGlobalCacheDir *d, *next; |
327a7fd4 | 186 | |
eb0cf671 | 187 | for (d = cache->dirs; d; d = next) |
327a7fd4 | 188 | { |
eb0cf671 PL |
189 | next = d->next; |
190 | FcGlobalCacheDirDestroy (d); | |
327a7fd4 | 191 | } |
eb0cf671 PL |
192 | FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCache)); |
193 | free (cache); | |
327a7fd4 KP |
194 | } |
195 | ||
196 | void | |
eb0cf671 | 197 | FcGlobalCacheLoad (FcGlobalCache *cache, |
03a212e5 | 198 | FcStrSet *staleDirs, |
2b25f00c PL |
199 | const FcChar8 *cache_file, |
200 | FcConfig *config) | |
327a7fd4 | 201 | { |
ea44e218 | 202 | char name_buf[FC_MAX_FILE_LEN]; |
eb0cf671 | 203 | FcGlobalCacheDir *d, *next; |
2b25f00c | 204 | FcFileTime config_time = FcConfigModifiedTime (config); |
eb0cf671 PL |
205 | char * current_arch_machine_name; |
206 | char candidate_arch_machine_name[MACHINE_SIGNATURE_SIZE + 9]; | |
207 | off_t current_arch_start; | |
327a7fd4 | 208 | |
03a212e5 | 209 | struct stat cache_stat, dir_stat; |
971cf180 | 210 | char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1]; |
03a212e5 PL |
211 | |
212 | if (stat ((char *) cache_file, &cache_stat) < 0) | |
213 | return; | |
214 | ||
eb0cf671 PL |
215 | cache->fd = open ((char *) cache_file, O_RDONLY); |
216 | if (cache->fd == -1) | |
217 | return; | |
327a7fd4 | 218 | |
eb0cf671 | 219 | cache->updated = FcFalse; |
327a7fd4 | 220 | |
c5411c4c | 221 | if (!FcCacheReadString (cache->fd, name_buf, sizeof (name_buf))) |
28aefd01 | 222 | goto bail_and_destroy; |
c60ec7cc | 223 | if (strcmp (name_buf, FC_GLOBAL_MAGIC_COOKIE) != 0) |
28aefd01 | 224 | goto bail_and_destroy; |
c60ec7cc | 225 | |
eb0cf671 PL |
226 | current_arch_machine_name = FcCacheMachineSignature (); |
227 | current_arch_start = FcCacheSkipToArch(cache->fd, | |
c60ec7cc | 228 | current_arch_machine_name); |
eb0cf671 | 229 | if (current_arch_start < 0) |
e58b50e8 | 230 | goto bail_and_destroy; |
327a7fd4 | 231 | |
eb0cf671 | 232 | lseek (cache->fd, current_arch_start, SEEK_SET); |
c5411c4c PL |
233 | if (!FcCacheReadString (cache->fd, candidate_arch_machine_name, |
234 | sizeof (candidate_arch_machine_name))) | |
235 | goto bail_and_destroy; | |
03a212e5 | 236 | if (strlen(candidate_arch_machine_name) == 0) |
e58b50e8 | 237 | goto bail_and_destroy; |
1b7be377 | 238 | |
eb0cf671 | 239 | while (1) |
1b7be377 | 240 | { |
8cb4c56d PL |
241 | off_t targ; |
242 | ||
2c4e0124 PL |
243 | if (!FcCacheReadString (cache->fd, name_buf, sizeof (name_buf)) || |
244 | !strlen(name_buf)) | |
1b7be377 | 245 | break; |
1b7be377 | 246 | |
9090cb9e PL |
247 | /* Directory must be older than the global cache file; also |
248 | cache must be newer than the config file. */ | |
03a212e5 | 249 | if (stat ((char *) name_buf, &dir_stat) < 0 || |
2b25f00c | 250 | dir_stat.st_mtime > cache_stat.st_mtime || |
9090cb9e | 251 | (config_time.set && cache_stat.st_mtime < config_time.time)) |
03a212e5 PL |
252 | { |
253 | FcCache md; | |
68355f38 | 254 | off_t off; |
03a212e5 | 255 | |
68355f38 | 256 | FcStrSetAdd (staleDirs, FcStrCopy ((FcChar8 *)name_buf)); |
fff5a5af PL |
257 | |
258 | /* skip subdirs */ | |
259 | while (FcCacheReadString (cache->fd, subdirName, | |
260 | sizeof (subdirName)) && | |
261 | strlen (subdirName)) | |
262 | ; | |
263 | ||
68355f38 PL |
264 | if (read (cache->fd, &md, sizeof (FcCache)) != sizeof(FcCache)) |
265 | { | |
266 | perror ("read metadata"); | |
267 | goto bail1; | |
268 | } | |
269 | off = FcCacheNextOffset (lseek(cache->fd, 0, SEEK_CUR)) + md.count; | |
fff5a5af PL |
270 | if (lseek (cache->fd, off, SEEK_SET) != off) |
271 | { | |
68355f38 PL |
272 | perror ("lseek"); |
273 | goto bail1; | |
274 | } | |
275 | continue; | |
03a212e5 PL |
276 | } |
277 | ||
eb0cf671 PL |
278 | d = malloc (sizeof (FcGlobalCacheDir)); |
279 | if (!d) | |
280 | goto bail1; | |
1b7be377 | 281 | |
eb0cf671 PL |
282 | d->next = cache->dirs; |
283 | cache->dirs = d; | |
1b7be377 | 284 | |
8245771d | 285 | d->name = (char *)FcStrCopy ((FcChar8 *)name_buf); |
eb0cf671 | 286 | d->ent = 0; |
fff5a5af | 287 | d->state = FcGCDirFileRead; |
971cf180 PL |
288 | |
289 | d->subdirs = FcStrSetCreate(); | |
2c4e0124 PL |
290 | do |
291 | { | |
292 | if (!FcCacheReadString (cache->fd, subdirName, | |
293 | sizeof (subdirName)) || | |
294 | !strlen (subdirName)) | |
295 | break; | |
971cf180 | 296 | FcStrSetAdd (d->subdirs, (FcChar8 *)subdirName); |
2c4e0124 | 297 | } while (1); |
971cf180 | 298 | |
81d97094 | 299 | d->offset = lseek (cache->fd, 0, SEEK_CUR); |
8cb4c56d PL |
300 | if (read (cache->fd, &d->metadata, sizeof (FcCache)) != sizeof (FcCache)) |
301 | goto bail1; | |
302 | targ = FcCacheNextOffset (lseek(cache->fd, 0, SEEK_CUR)) + d->metadata.count; | |
303 | if (lseek (cache->fd, targ, SEEK_SET) != targ) | |
304 | goto bail1; | |
1b7be377 | 305 | } |
eb0cf671 | 306 | return; |
1b7be377 | 307 | |
eb0cf671 PL |
308 | bail1: |
309 | for (d = cache->dirs; d; d = next) | |
1b7be377 | 310 | { |
eb0cf671 PL |
311 | next = d->next; |
312 | free (d); | |
1b7be377 | 313 | } |
eb0cf671 | 314 | cache->dirs = 0; |
e58b50e8 PL |
315 | |
316 | close (cache->fd); | |
317 | cache->fd = -1; | |
318 | return; | |
319 | ||
320 | bail_and_destroy: | |
eb0cf671 PL |
321 | close (cache->fd); |
322 | cache->fd = -1; | |
e58b50e8 PL |
323 | |
324 | if (stat ((char *) cache_file, &cache_stat) == 0) | |
325 | unlink ((char *)cache_file); | |
326 | ||
eb0cf671 | 327 | return; |
e58b50e8 | 328 | |
1b7be377 PL |
329 | } |
330 | ||
1b7be377 | 331 | FcBool |
8245771d | 332 | FcGlobalCacheReadDir (FcFontSet *set, FcStrSet *dirs, FcGlobalCache * cache, const char *dir, FcConfig *config) |
1b7be377 | 333 | { |
3616cbe2 | 334 | FcGlobalCacheDir *d; |
3616cbe2 | 335 | int i; |
1b7be377 | 336 | |
eb0cf671 | 337 | if (cache->fd == -1) |
1b7be377 | 338 | return FcFalse; |
1b7be377 | 339 | |
4073203d PL |
340 | if (!(dir = (char *)FcConfigNormalizeFontDir (config, (FcChar8 *)dir))) |
341 | return FcFalse; /* non-existing directory */ | |
342 | ||
eb0cf671 | 343 | for (d = cache->dirs; d; d = d->next) |
1b7be377 | 344 | { |
fff5a5af | 345 | if (strcmp (d->name, dir) == 0) |
1b7be377 | 346 | { |
fff5a5af | 347 | if (d->state == FcGCDirDisabled) |
eb0cf671 | 348 | return FcFalse; |
3616cbe2 | 349 | |
fff5a5af PL |
350 | if (d->state == FcGCDirFileRead) |
351 | { | |
352 | lseek (cache->fd, d->offset, SEEK_SET); | |
353 | if (!FcDirCacheConsume (cache->fd, d->name, set, config)) | |
354 | return FcFalse; | |
355 | ||
3616cbe2 PL |
356 | for (i = 0; i < d->subdirs->num; i++) |
357 | FcStrSetAdd (dirs, (FcChar8 *)d->subdirs->strs[i]); | |
358 | ||
fff5a5af PL |
359 | d->state = FcGCDirConsumed; |
360 | } | |
361 | return FcTrue; | |
1b7be377 | 362 | } |
1b7be377 | 363 | } |
1b7be377 | 364 | |
fff5a5af | 365 | return FcFalse; |
1b7be377 PL |
366 | } |
367 | ||
fff5a5af PL |
368 | static FcGlobalCacheDir * |
369 | FcGlobalCacheDirFind (FcGlobalCache *cache, const char *name) | |
370 | { | |
371 | FcGlobalCacheDir * d; | |
372 | ||
373 | if (!cache || !name) | |
374 | return NULL; | |
375 | ||
376 | for (d = cache->dirs; d; d = d->next) | |
377 | if (strcmp((const char *)d->name, (const char *)name) == 0) | |
378 | return d; | |
379 | ||
380 | return NULL; | |
381 | } | |
382 | ||
eb0cf671 PL |
383 | FcBool |
384 | FcGlobalCacheUpdate (FcGlobalCache *cache, | |
971cf180 | 385 | FcStrSet *dirs, |
fff5a5af | 386 | const char *orig_name, |
8a0b0ed6 PL |
387 | FcFontSet *set, |
388 | FcConfig *config) | |
1b7be377 | 389 | { |
971cf180 PL |
390 | FcGlobalCacheDir *d; |
391 | int i; | |
fff5a5af | 392 | const char *name; |
1b7be377 | 393 | |
fff5a5af PL |
394 | name = (char *)FcConfigNormalizeFontDir (config, (FcChar8 *)orig_name); |
395 | if (!name) | |
1b7be377 | 396 | { |
fff5a5af PL |
397 | fprintf(stderr, "Invalid directory name %s\n", orig_name); |
398 | return FcFalse; | |
24330d27 | 399 | } |
24330d27 | 400 | |
fff5a5af PL |
401 | d = FcGlobalCacheDirFind (cache, name); |
402 | ||
eb0cf671 | 403 | if (!d) |
24330d27 | 404 | { |
eb0cf671 PL |
405 | d = malloc (sizeof (FcGlobalCacheDir)); |
406 | if (!d) | |
407 | return FcFalse; | |
408 | d->next = cache->dirs; | |
409 | cache->dirs = d; | |
fff5a5af PL |
410 | } else { |
411 | /* free old resources */ | |
412 | FcStrFree ((FcChar8 *)d->name); | |
413 | free (d->ent); | |
414 | FcStrSetDestroy (d->subdirs); | |
24330d27 | 415 | } |
24330d27 | 416 | |
eb0cf671 | 417 | cache->updated = FcTrue; |
24330d27 | 418 | |
8245771d | 419 | d->name = (char *)FcStrCopy ((FcChar8 *)name); |
eb0cf671 PL |
420 | d->ent = FcDirCacheProduce (set, &d->metadata); |
421 | d->offset = 0; | |
971cf180 | 422 | d->subdirs = FcStrSetCreate(); |
fff5a5af | 423 | d->state = FcGCDirUpdated; |
971cf180 PL |
424 | for (i = 0; i < dirs->num; i++) |
425 | FcStrSetAdd (d->subdirs, dirs->strs[i]); | |
eb0cf671 | 426 | return FcTrue; |
24330d27 KP |
427 | } |
428 | ||
429 | FcBool | |
327a7fd4 | 430 | FcGlobalCacheSave (FcGlobalCache *cache, |
8a0b0ed6 PL |
431 | const FcChar8 *cache_file, |
432 | FcConfig *config) | |
24330d27 | 433 | { |
971cf180 | 434 | int fd, fd_orig, i; |
327a7fd4 | 435 | FcGlobalCacheDir *dir; |
327a7fd4 | 436 | FcAtomic *atomic; |
eb0cf671 PL |
437 | off_t current_arch_start = 0, truncate_to; |
438 | char * current_arch_machine_name, * header; | |
24330d27 | 439 | |
eb0cf671 | 440 | if (!cache->updated) |
24330d27 KP |
441 | return FcTrue; |
442 | ||
daeed6e0 | 443 | #if defined (HAVE_GETUID) && defined (HAVE_GETEUID) |
a391da8f KP |
444 | /* Set-UID programs can't safely update the cache */ |
445 | if (getuid () != geteuid ()) | |
446 | return FcFalse; | |
daeed6e0 | 447 | #endif |
a391da8f | 448 | |
134f6011 KP |
449 | atomic = FcAtomicCreate (cache_file); |
450 | if (!atomic) | |
1d879de2 PL |
451 | return FcFalse; |
452 | ||
134f6011 | 453 | if (!FcAtomicLock (atomic)) |
24330d27 | 454 | goto bail1; |
eb0cf671 PL |
455 | fd = open ((char *) FcAtomicNewFile(atomic), O_RDWR | O_CREAT, |
456 | S_IRUSR | S_IWUSR); | |
457 | if (fd == -1) | |
24330d27 | 458 | goto bail2; |
f468f568 | 459 | FcCacheWriteString (fd, FC_GLOBAL_MAGIC_COOKIE); |
24330d27 | 460 | |
1d879de2 PL |
461 | fd_orig = open ((char *) FcAtomicOrigFile(atomic), O_RDONLY); |
462 | ||
eb0cf671 | 463 | current_arch_machine_name = FcCacheMachineSignature (); |
1d879de2 PL |
464 | if (fd_orig == -1) |
465 | current_arch_start = 0; | |
466 | else | |
467 | current_arch_start = FcCacheSkipToArch (fd_orig, | |
c60ec7cc | 468 | current_arch_machine_name); |
1d879de2 | 469 | |
eb0cf671 | 470 | if (current_arch_start < 0) |
f468f568 PL |
471 | { |
472 | off_t i = lseek(fd_orig, 0, SEEK_END); | |
473 | if (i < strlen (FC_GLOBAL_MAGIC_COOKIE)+1) | |
474 | i = strlen (FC_GLOBAL_MAGIC_COOKIE)+1; | |
475 | current_arch_start = FcCacheNextOffset (i); | |
476 | } | |
eb0cf671 | 477 | |
1d879de2 PL |
478 | if (!FcCacheCopyOld(fd, fd_orig, current_arch_start)) |
479 | goto bail3; | |
480 | ||
eb0cf671 PL |
481 | current_arch_start = lseek(fd, 0, SEEK_CUR); |
482 | if (ftruncate (fd, current_arch_start) == -1) | |
1d879de2 | 483 | goto bail3; |
eb0cf671 | 484 | |
03a212e5 PL |
485 | header = malloc (10 + strlen (current_arch_machine_name)); |
486 | if (!header) | |
1d879de2 | 487 | goto bail3; |
03a212e5 | 488 | |
8cb4c56d | 489 | truncate_to = current_arch_start + strlen(current_arch_machine_name) + 11; |
eb0cf671 | 490 | for (dir = cache->dirs; dir; dir = dir->next) |
24330d27 | 491 | { |
fff5a5af PL |
492 | if (dir->state == FcGCDirDisabled) |
493 | continue; | |
eb0cf671 PL |
494 | truncate_to += strlen(dir->name) + 1; |
495 | truncate_to += sizeof (FcCache); | |
1c5b6345 | 496 | truncate_to = FcCacheNextOffset (truncate_to); |
eb0cf671 | 497 | truncate_to += dir->metadata.count; |
971cf180 PL |
498 | |
499 | for (i = 0; i < dir->subdirs->size; i++) | |
500 | truncate_to += strlen((char *)dir->subdirs->strs[i]) + 1; | |
501 | truncate_to ++; | |
eb0cf671 PL |
502 | } |
503 | truncate_to -= current_arch_start; | |
eb0cf671 | 504 | |
8cb4c56d PL |
505 | sprintf (header, "%8x ", (int)truncate_to); |
506 | strcat (header, current_arch_machine_name); | |
507 | if (!FcCacheWriteString (fd, header)) | |
1d879de2 | 508 | goto bail4; |
8cb4c56d | 509 | |
eb0cf671 PL |
510 | for (dir = cache->dirs; dir; dir = dir->next) |
511 | { | |
fff5a5af PL |
512 | const char * d; |
513 | off_t off; | |
971cf180 | 514 | |
fff5a5af PL |
515 | if (!dir->name || dir->state == FcGCDirDisabled) |
516 | continue; | |
517 | d = (const char *)FcConfigNormalizeFontDir (config, (const FcChar8 *)dir->name); | |
518 | if (!d) | |
519 | continue; | |
971cf180 | 520 | |
fff5a5af PL |
521 | if (dir->metadata.count && !dir->ent) |
522 | { | |
523 | if (dir->state == FcGCDirUpdated || fd_orig < 0) | |
68355f38 | 524 | { |
fff5a5af | 525 | fprintf(stderr, "Invalid metadata entry for %s, skipping...\n", d); |
68355f38 PL |
526 | continue; |
527 | } | |
fff5a5af PL |
528 | /* copy the old content */ |
529 | dir->ent = malloc (dir->metadata.count); | |
530 | if (!dir->ent) | |
68355f38 | 531 | { |
fff5a5af | 532 | perror("malloc error"); |
68355f38 PL |
533 | continue; |
534 | } | |
fff5a5af PL |
535 | off = FcCacheNextOffset (dir->offset + sizeof(FcCache)); |
536 | if (lseek (fd_orig, off, SEEK_SET) != off) | |
537 | { | |
538 | perror("lseek"); | |
539 | free(dir->ent); | |
540 | continue; | |
541 | } | |
542 | if (read (fd_orig, dir->ent, dir->metadata.count) | |
543 | != dir->metadata.count) | |
544 | { | |
545 | perror("read"); | |
546 | free(dir->ent); | |
547 | continue; | |
548 | } | |
549 | } | |
550 | ||
551 | FcCacheWriteString (fd, d); | |
552 | ||
553 | for (i = 0; i < dir->subdirs->size; i++) | |
554 | FcCacheWriteString (fd, (char *)dir->subdirs->strs[i]); | |
555 | FcCacheWriteString (fd, ""); | |
556 | ||
557 | if (write (fd, &dir->metadata, sizeof(FcCache)) != sizeof(FcCache)) | |
558 | { | |
559 | perror ("write metadata"); | |
560 | free (dir->ent); | |
561 | continue; | |
562 | } | |
563 | off = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR)); | |
564 | if (lseek (fd, off, SEEK_SET) != off) | |
565 | { | |
566 | perror ("lseek"); | |
567 | free (dir->ent); | |
568 | continue; | |
569 | } | |
570 | if (dir->metadata.count) | |
571 | { | |
68355f38 PL |
572 | if (write (fd, dir->ent, dir->metadata.count) != dir->metadata.count) |
573 | { | |
574 | perror ("write dirent"); | |
575 | free (dir->ent); | |
576 | continue; | |
577 | } | |
68355f38 | 578 | } |
fff5a5af | 579 | free (dir->ent); |
24330d27 | 580 | } |
eb0cf671 | 581 | FcCacheWriteString (fd, ""); |
24330d27 | 582 | |
eb0cf671 | 583 | if (close (fd) == -1) |
1d879de2 | 584 | goto bail25; |
fff5a5af PL |
585 | |
586 | close (fd_orig); | |
587 | fd_orig = -1; | |
24330d27 | 588 | |
134f6011 | 589 | if (!FcAtomicReplaceOrig (atomic)) |
1d879de2 | 590 | goto bail25; |
24330d27 | 591 | |
134f6011 KP |
592 | FcAtomicUnlock (atomic); |
593 | FcAtomicDestroy (atomic); | |
594 | ||
24330d27 KP |
595 | cache->updated = FcFalse; |
596 | return FcTrue; | |
597 | ||
1d879de2 PL |
598 | bail4: |
599 | free (header); | |
600 | bail3: | |
601 | if (fd_orig != -1) | |
602 | close (fd_orig); | |
603 | ||
604 | close (fd); | |
605 | bail25: | |
134f6011 | 606 | FcAtomicDeleteNew (atomic); |
1d879de2 | 607 | bail2: |
134f6011 | 608 | FcAtomicUnlock (atomic); |
1d879de2 | 609 | bail1: |
134f6011 | 610 | FcAtomicDestroy (atomic); |
24330d27 KP |
611 | return FcFalse; |
612 | } | |
613 | ||
212c9f43 | 614 | /* |
eb0cf671 PL |
615 | * Find the next presumably-mmapable offset after the supplied file |
616 | * position. | |
212c9f43 | 617 | */ |
4262e0b3 PL |
618 | static int |
619 | FcCacheNextOffset(off_t w) | |
179c3995 | 620 | { |
7fd7221e PL |
621 | static long pagesize = -1; |
622 | if (pagesize == -1) | |
623 | pagesize = sysconf(_SC_PAGESIZE); | |
624 | if (w % pagesize == 0) | |
212c9f43 PL |
625 | return w; |
626 | else | |
7fd7221e | 627 | return ((w / pagesize)+1)*pagesize; |
179c3995 KP |
628 | } |
629 | ||
212c9f43 PL |
630 | /* return the address of the segment for the provided arch, |
631 | * or -1 if arch not found */ | |
632 | static off_t | |
c60ec7cc | 633 | FcCacheSkipToArch (int fd, const char * arch) |
212c9f43 | 634 | { |
2dbe7597 PL |
635 | char candidate_arch_machine_name_count[MACHINE_SIGNATURE_SIZE + 9]; |
636 | char * candidate_arch; | |
212c9f43 PL |
637 | off_t current_arch_start = 0; |
638 | ||
ea44e218 | 639 | lseek (fd, 0, SEEK_SET); |
c60ec7cc | 640 | FcCacheSkipString (fd); |
ea44e218 PL |
641 | current_arch_start = lseek (fd, 0, SEEK_CUR); |
642 | ||
212c9f43 PL |
643 | /* skip arches that are not the current arch */ |
644 | while (1) | |
645 | { | |
646 | long bs; | |
647 | ||
8cb4c56d PL |
648 | if (lseek (fd, current_arch_start, SEEK_SET) != current_arch_start) |
649 | return -1; | |
650 | ||
eb0cf671 | 651 | if (FcCacheReadString (fd, candidate_arch_machine_name_count, |
2dbe7597 | 652 | sizeof (candidate_arch_machine_name_count)) == 0) |
5e678e94 | 653 | return -1; |
2dbe7597 PL |
654 | if (!strlen(candidate_arch_machine_name_count)) |
655 | return -1; | |
656 | bs = strtol(candidate_arch_machine_name_count, &candidate_arch, 16); | |
8cb4c56d | 657 | |
13cdf607 | 658 | // count = 0 should probably be distinguished from the !bs condition |
8cb4c56d PL |
659 | if (!bs || bs < strlen (candidate_arch_machine_name_count)) |
660 | return -1; | |
661 | ||
2dbe7597 | 662 | candidate_arch++; /* skip leading space */ |
212c9f43 | 663 | |
2dbe7597 | 664 | if (strcmp (candidate_arch, arch)==0) |
5e678e94 | 665 | return current_arch_start; |
212c9f43 PL |
666 | current_arch_start += bs; |
667 | } | |
668 | ||
5e678e94 | 669 | return -1; |
212c9f43 PL |
670 | } |
671 | ||
672 | /* Cuts out the segment at the file pointer (moves everything else | |
673 | * down to cover it), and leaves the file pointer at the end of the | |
674 | * file. */ | |
212c9f43 | 675 | static FcBool |
1d879de2 | 676 | FcCacheCopyOld (int fd, int fd_orig, off_t start) |
212c9f43 | 677 | { |
eb0cf671 | 678 | char * buf = malloc (8192); |
2dbe7597 | 679 | char candidate_arch_machine_name[MACHINE_SIGNATURE_SIZE + 9]; |
4262e0b3 | 680 | long bs; |
212c9f43 | 681 | int c, bytes_skipped; |
1d879de2 | 682 | off_t loc; |
212c9f43 PL |
683 | |
684 | if (!buf) | |
685 | return FcFalse; | |
686 | ||
1d879de2 PL |
687 | loc = 0; |
688 | lseek (fd, 0, SEEK_SET); lseek (fd_orig, 0, SEEK_SET); | |
689 | do | |
690 | { | |
691 | int b = 8192; | |
692 | if (loc + b > start) | |
693 | b = start - loc; | |
694 | ||
695 | if ((c = read (fd_orig, buf, b)) <= 0) | |
696 | break; | |
697 | if (write (fd, buf, c) < 0) | |
698 | goto bail; | |
699 | ||
700 | loc += c; | |
701 | } | |
702 | while (c > 0); | |
703 | ||
212c9f43 | 704 | lseek (fd, start, SEEK_SET); |
eb0cf671 | 705 | if (FcCacheReadString (fd, candidate_arch_machine_name, |
212c9f43 PL |
706 | sizeof (candidate_arch_machine_name)) == 0) |
707 | goto done; | |
2dbe7597 | 708 | if (!strlen(candidate_arch_machine_name)) |
212c9f43 PL |
709 | goto done; |
710 | ||
2dbe7597 | 711 | bs = strtol(candidate_arch_machine_name, 0, 16); |
212c9f43 PL |
712 | if (bs == 0) |
713 | goto done; | |
714 | ||
715 | bytes_skipped = 0; | |
716 | do | |
717 | { | |
718 | lseek (fd, start+bs+bytes_skipped, SEEK_SET); | |
eb0cf671 | 719 | if ((c = read (fd, buf, 8192)) <= 0) |
212c9f43 PL |
720 | break; |
721 | lseek (fd, start+bytes_skipped, SEEK_SET); | |
722 | if (write (fd, buf, c) < 0) | |
723 | goto bail; | |
724 | bytes_skipped += c; | |
725 | } | |
726 | while (c > 0); | |
727 | lseek (fd, start+bytes_skipped, SEEK_SET); | |
728 | ||
729 | done: | |
730 | free (buf); | |
731 | return FcTrue; | |
732 | ||
733 | bail: | |
734 | free (buf); | |
735 | return FcFalse; | |
736 | } | |
737 | ||
55c8fa4f | 738 | /* Does not check that the cache has the appropriate arch section. */ |
ec760b17 PL |
739 | /* Also, this can be fooled if the original location has a stale |
740 | * cache, and the hashed location has an up-to-date cache. Oh well, | |
741 | * sucks to be you in that case! */ | |
1b7be377 PL |
742 | FcBool |
743 | FcDirCacheValid (const FcChar8 *dir) | |
744 | { | |
1b7be377 | 745 | struct stat file_stat, dir_stat; |
ea44e218 | 746 | int fd; |
1b7be377 PL |
747 | |
748 | if (stat ((char *) dir, &dir_stat) < 0) | |
1b7be377 | 749 | return FcFalse; |
6bf23804 | 750 | |
df3efc11 | 751 | fd = FcDirCacheOpen (dir); |
ea44e218 PL |
752 | |
753 | if (fd < 0) | |
754 | goto bail; | |
755 | if (fstat (fd, &file_stat) < 0) | |
df3efc11 | 756 | goto bail; |
ea44e218 PL |
757 | |
758 | close (fd); | |
ea44e218 | 759 | |
55c8fa4f PL |
760 | /* |
761 | * If the directory has been modified more recently than | |
762 | * the cache file, the cache is not valid | |
763 | */ | |
2b25f00c | 764 | if (dir_stat.st_mtime > file_stat.st_mtime) |
55c8fa4f | 765 | return FcFalse; |
2b25f00c | 766 | |
55c8fa4f | 767 | return FcTrue; |
ea44e218 | 768 | |
ea44e218 | 769 | bail: |
df3efc11 | 770 | close (fd); |
ea44e218 | 771 | return FcFalse; |
55c8fa4f PL |
772 | } |
773 | ||
774 | /* Assumes that the cache file in 'dir' exists. | |
775 | * Checks that the cache has the appropriate arch section. */ | |
776 | FcBool | |
777 | FcDirCacheHasCurrentArch (const FcChar8 *dir) | |
778 | { | |
55c8fa4f PL |
779 | int fd; |
780 | off_t current_arch_start; | |
781 | char *current_arch_machine_name; | |
782 | ||
df3efc11 | 783 | fd = FcDirCacheOpen (dir); |
ea44e218 PL |
784 | if (fd < 0) |
785 | goto bail; | |
786 | ||
787 | current_arch_machine_name = FcCacheMachineSignature(); | |
c60ec7cc | 788 | current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name); |
6bf23804 PL |
789 | close (fd); |
790 | ||
791 | if (current_arch_start < 0) | |
792 | return FcFalse; | |
55c8fa4f PL |
793 | |
794 | return FcTrue; | |
ea44e218 PL |
795 | |
796 | bail: | |
ea44e218 | 797 | return FcFalse; |
55c8fa4f | 798 | } |
6bf23804 | 799 | |
55c8fa4f | 800 | FcBool |
8a0b0ed6 | 801 | FcDirCacheUnlink (const FcChar8 *dir, FcConfig *config) |
55c8fa4f | 802 | { |
8a0b0ed6 | 803 | char *cache_file; |
6f9fcb51 | 804 | char *cache_hashed = 0; |
3bfae75d | 805 | int fd, collisions; |
15d7bd0a | 806 | struct stat cache_stat; |
3bfae75d | 807 | char name_buf[FC_MAX_FILE_LEN]; |
55c8fa4f | 808 | |
8a0b0ed6 PL |
809 | dir = FcConfigNormalizeFontDir (config, dir); |
810 | cache_file = (char *)FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE); | |
df3efc11 PL |
811 | if (!cache_file) |
812 | return FcFalse; | |
813 | ||
3bfae75d | 814 | /* First remove normal cache file. */ |
15d7bd0a PL |
815 | if (stat ((char *) cache_file, &cache_stat) == 0 && |
816 | unlink ((char *)cache_file) != 0) | |
3bfae75d PL |
817 | goto bail; |
818 | ||
819 | /* Next remove any applicable hashed files. */ | |
820 | fd = -1; collisions = 0; | |
821 | do | |
1178b569 | 822 | { |
6f9fcb51 PL |
823 | if (cache_hashed) |
824 | FcStrFree ((FcChar8 *)cache_hashed); | |
825 | ||
3bfae75d PL |
826 | cache_hashed = FcDirCacheHashName (cache_file, collisions++); |
827 | if (!cache_hashed) | |
828 | goto bail; | |
829 | ||
830 | if (fd > 0) | |
831 | close (fd); | |
832 | fd = open(cache_hashed, O_RDONLY); | |
833 | if (fd == -1) | |
834 | { | |
835 | FcStrFree ((FcChar8 *)cache_file); | |
836 | return FcTrue; | |
837 | } | |
838 | ||
c5411c4c | 839 | if (!FcCacheReadString (fd, name_buf, sizeof (name_buf)) || !strlen(name_buf)) |
6f9fcb51 PL |
840 | { |
841 | FcStrFree ((FcChar8 *)cache_hashed); | |
3bfae75d | 842 | goto bail; |
6f9fcb51 | 843 | } |
3bfae75d PL |
844 | } while (strcmp (name_buf, cache_file) != 0); |
845 | ||
3bfae75d PL |
846 | close (fd); |
847 | ||
848 | if (stat ((char *) cache_hashed, &cache_stat) == 0 && | |
849 | unlink ((char *)cache_hashed) != 0) | |
850 | { | |
851 | FcStrFree ((FcChar8 *)cache_hashed); | |
852 | goto bail; | |
1178b569 | 853 | } |
55c8fa4f | 854 | |
1af0f574 | 855 | FcStrFree ((FcChar8 *)cache_file); |
3bfae75d | 856 | FcStrFree ((FcChar8 *)cache_hashed); |
1b7be377 | 857 | return FcTrue; |
3bfae75d PL |
858 | |
859 | bail: | |
860 | FcStrFree ((FcChar8 *)cache_file); | |
861 | return FcFalse; | |
1b7be377 PL |
862 | } |
863 | ||
4262e0b3 | 864 | static int |
1b7be377 | 865 | FcCacheReadDirs (FcConfig * config, FcGlobalCache * cache, |
8b413bb6 | 866 | FcStrList *list, FcFontSet * set, FcStrSet *processed_dirs) |
4262e0b3 | 867 | { |
4262e0b3 PL |
868 | int ret = 0; |
869 | FcChar8 *dir; | |
fff5a5af | 870 | const FcChar8 *name; |
4262e0b3 PL |
871 | FcStrSet *subdirs; |
872 | FcStrList *sublist; | |
873 | struct stat statb; | |
fff5a5af | 874 | FcGlobalCacheDir *d; |
4262e0b3 PL |
875 | |
876 | /* | |
03a212e5 | 877 | * Read in the results from 'list'. |
4262e0b3 PL |
878 | */ |
879 | while ((dir = FcStrListNext (list))) | |
880 | { | |
9fad72ab PL |
881 | if (!FcConfigAcceptFilename (config, dir)) |
882 | continue; | |
883 | ||
fff5a5af PL |
884 | /* Skip this directory if already updated |
885 | * to avoid the looped directories via symlinks | |
886 | */ | |
887 | name = FcConfigNormalizeFontDir (config, dir); | |
888 | if (name) | |
889 | { | |
8b413bb6 | 890 | if (FcStrSetMember (processed_dirs, dir)) |
fff5a5af | 891 | continue; |
8b413bb6 | 892 | FcStrSetAdd (processed_dirs, dir); |
fff5a5af | 893 | } |
4262e0b3 PL |
894 | |
895 | subdirs = FcStrSetCreate (); | |
896 | if (!subdirs) | |
897 | { | |
898 | fprintf (stderr, "Can't create directory set\n"); | |
899 | ret++; | |
4262e0b3 PL |
900 | continue; |
901 | } | |
902 | ||
903 | if (access ((char *) dir, X_OK) < 0) | |
904 | { | |
905 | switch (errno) { | |
906 | case ENOENT: | |
907 | case ENOTDIR: | |
908 | case EACCES: | |
909 | break; | |
910 | default: | |
911 | fprintf (stderr, "\"%s\": ", dir); | |
912 | perror (""); | |
913 | ret++; | |
914 | } | |
915 | FcStrSetDestroy (subdirs); | |
4262e0b3 PL |
916 | continue; |
917 | } | |
918 | if (stat ((char *) dir, &statb) == -1) | |
919 | { | |
920 | fprintf (stderr, "\"%s\": ", dir); | |
921 | perror (""); | |
922 | FcStrSetDestroy (subdirs); | |
923 | ret++; | |
4262e0b3 PL |
924 | continue; |
925 | } | |
926 | if (!S_ISDIR (statb.st_mode)) | |
927 | { | |
928 | fprintf (stderr, "\"%s\": not a directory, skipping\n", dir); | |
929 | FcStrSetDestroy (subdirs); | |
4262e0b3 PL |
930 | continue; |
931 | } | |
fff5a5af PL |
932 | if (FcDirCacheValid (dir) && FcDirCacheRead (set, subdirs, dir, config)) |
933 | { | |
934 | /* if an old entry is found in the global cache, disable it */ | |
935 | if ((d = FcGlobalCacheDirFind (cache, (const char *)name)) != NULL) | |
936 | { | |
937 | d->state = FcGCDirDisabled; | |
938 | /* save the updated config later without this entry */ | |
939 | cache->updated = FcTrue; | |
940 | } | |
941 | } | |
942 | else | |
4262e0b3 | 943 | { |
1b7be377 | 944 | if (FcDebug () & FC_DBG_FONTSET) |
03a212e5 | 945 | printf ("cache scan dir %s\n", dir); |
2304e38f | 946 | |
1b7be377 PL |
947 | FcDirScanConfig (set, subdirs, cache, |
948 | config->blanks, dir, FcFalse, config); | |
4262e0b3 PL |
949 | } |
950 | sublist = FcStrListCreate (subdirs); | |
951 | FcStrSetDestroy (subdirs); | |
952 | if (!sublist) | |
953 | { | |
954 | fprintf (stderr, "Can't create subdir list in \"%s\"\n", dir); | |
955 | ret++; | |
4262e0b3 PL |
956 | continue; |
957 | } | |
8b413bb6 | 958 | ret += FcCacheReadDirs (config, cache, sublist, set, processed_dirs); |
4262e0b3 PL |
959 | } |
960 | FcStrListDone (list); | |
961 | return ret; | |
962 | } | |
963 | ||
964 | FcFontSet * | |
1b7be377 | 965 | FcCacheRead (FcConfig *config, FcGlobalCache * cache) |
4262e0b3 | 966 | { |
8b413bb6 PL |
967 | FcFontSet *s = FcFontSetCreate(); |
968 | FcStrSet *processed_dirs; | |
969 | ||
4262e0b3 PL |
970 | if (!s) |
971 | return 0; | |
972 | ||
8b413bb6 PL |
973 | processed_dirs = FcStrSetCreate(); |
974 | if (!processed_dirs) | |
4262e0b3 PL |
975 | goto bail; |
976 | ||
8b413bb6 PL |
977 | if (FcCacheReadDirs (config, cache, FcConfigGetConfigDirs (config), s, processed_dirs)) |
978 | goto bail1; | |
979 | ||
980 | FcStrSetDestroy (processed_dirs); | |
4262e0b3 PL |
981 | return s; |
982 | ||
8b413bb6 PL |
983 | bail1: |
984 | FcStrSetDestroy (processed_dirs); | |
4262e0b3 PL |
985 | bail: |
986 | FcFontSetDestroy (s); | |
987 | return 0; | |
988 | } | |
989 | ||
ea44e218 PL |
990 | static const char bin2hex[] = { '0', '1', '2', '3', |
991 | '4', '5', '6', '7', | |
992 | '8', '9', 'a', 'b', | |
993 | 'c', 'd', 'e', 'f' }; | |
994 | ||
995 | static char * | |
996 | FcDirCacheHashName (char * cache_file, int collisions) | |
997 | { | |
998 | unsigned char hash[16], hex_hash[33]; | |
999 | char *cache_hashed; | |
1000 | unsigned char uscore = '_'; | |
1001 | int cnt, i; | |
1002 | FcChar8 *tmp; | |
1003 | struct MD5Context ctx; | |
1004 | ||
1005 | MD5Init (&ctx); | |
1006 | MD5Update (&ctx, (unsigned char *)cache_file, strlen (cache_file)); | |
1007 | ||
1008 | for (i = 0; i < collisions; i++) | |
1009 | MD5Update (&ctx, &uscore, 1); | |
1010 | ||
1011 | MD5Final (hash, &ctx); | |
1012 | ||
1013 | for (cnt = 0; cnt < 16; ++cnt) | |
1014 | { | |
1015 | hex_hash[2*cnt] = bin2hex[hash[cnt] >> 4]; | |
1016 | hex_hash[2*cnt+1] = bin2hex[hash[cnt] & 0xf]; | |
1017 | } | |
1018 | hex_hash[32] = 0; | |
1019 | ||
1020 | tmp = FcStrPlus ((FcChar8 *)hex_hash, (FcChar8 *)FC_CACHE_SUFFIX); | |
1021 | if (!tmp) | |
1022 | return 0; | |
1023 | ||
83b67390 | 1024 | cache_hashed = (char *)FcStrPlus ((FcChar8 *)PKGCACHEDIR"/", tmp); |
ea44e218 PL |
1025 | free (tmp); |
1026 | ||
1027 | return cache_hashed; | |
1028 | } | |
1029 | ||
1030 | /* Opens the hashed name for cache_file. | |
1031 | * This would fail in the unlikely event of a collision and subsequent | |
1032 | * removal of the file which originally caused the collision. */ | |
1033 | static int | |
df3efc11 | 1034 | FcDirCacheOpen (const FcChar8 *dir) |
ea44e218 | 1035 | { |
df3efc11 | 1036 | FcBool found; |
ea44e218 | 1037 | int fd = -1, collisions = 0; |
df3efc11 | 1038 | char *cache_file, *cache_hashed; |
ea44e218 | 1039 | char name_buf[FC_MAX_FILE_LEN]; |
df3efc11 PL |
1040 | struct stat dir_stat; |
1041 | ||
1042 | cache_file = (char *)FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE); | |
1043 | if (!cache_file) | |
1044 | return -1; | |
ea44e218 | 1045 | |
ec760b17 PL |
1046 | fd = open(cache_file, O_RDONLY); |
1047 | if (fd != -1) | |
1048 | return fd; | |
1049 | ||
df3efc11 PL |
1050 | if (stat ((char *)dir, &dir_stat) == -1) |
1051 | return -1; | |
1052 | ||
8a0b0ed6 | 1053 | found = FcFalse; |
ea44e218 PL |
1054 | do |
1055 | { | |
df3efc11 PL |
1056 | struct stat c; |
1057 | FcChar8 * name_buf_dir; | |
1058 | ||
ea44e218 PL |
1059 | cache_hashed = FcDirCacheHashName (cache_file, collisions++); |
1060 | if (!cache_hashed) | |
575a37b7 PL |
1061 | { |
1062 | FcStrFree ((FcChar8 *)cache_file); | |
ea44e218 | 1063 | return -1; |
575a37b7 | 1064 | } |
ea44e218 PL |
1065 | |
1066 | if (fd > 0) | |
1067 | close (fd); | |
1068 | fd = open(cache_hashed, O_RDONLY); | |
3bfae75d PL |
1069 | FcStrFree ((FcChar8 *)cache_hashed); |
1070 | ||
ea44e218 | 1071 | if (fd == -1) |
575a37b7 PL |
1072 | { |
1073 | FcStrFree ((FcChar8 *)cache_file); | |
ea44e218 | 1074 | return -1; |
575a37b7 | 1075 | } |
c5411c4c | 1076 | if (!FcCacheReadString (fd, name_buf, sizeof (name_buf)) || !strlen(name_buf)) |
ea44e218 | 1077 | goto bail; |
df3efc11 PL |
1078 | |
1079 | name_buf_dir = FcStrDirname ((FcChar8 *)name_buf); | |
1080 | if (stat ((char *)name_buf_dir, &c) == -1) | |
1081 | { | |
1082 | FcStrFree (name_buf_dir); | |
1083 | continue; | |
1084 | } | |
1085 | FcStrFree (name_buf_dir); | |
575a37b7 | 1086 | found = (c.st_ino == dir_stat.st_ino) && (c.st_dev == dir_stat.st_dev); |
df3efc11 | 1087 | } while (!found); |
575a37b7 | 1088 | FcStrFree ((FcChar8 *)cache_file); |
ea44e218 PL |
1089 | return fd; |
1090 | ||
1091 | bail: | |
575a37b7 | 1092 | FcStrFree ((FcChar8 *)cache_file); |
ea44e218 PL |
1093 | close (fd); |
1094 | return -1; | |
1095 | } | |
1096 | ||
212c9f43 | 1097 | /* read serialized state from the cache file */ |
2eb84374 | 1098 | FcBool |
cd9bca69 | 1099 | FcDirCacheRead (FcFontSet * set, FcStrSet * dirs, const FcChar8 *dir, FcConfig *config) |
212c9f43 | 1100 | { |
ea44e218 PL |
1101 | int fd; |
1102 | char *current_arch_machine_name; | |
1103 | char candidate_arch_machine_name[9+MACHINE_SIGNATURE_SIZE]; | |
1104 | off_t current_arch_start = 0; | |
1105 | char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1]; | |
212c9f43 | 1106 | |
df3efc11 | 1107 | fd = FcDirCacheOpen (dir); |
ea44e218 PL |
1108 | if (fd < 0) |
1109 | goto bail; | |
212c9f43 | 1110 | |
ea44e218 PL |
1111 | current_arch_machine_name = FcCacheMachineSignature(); |
1112 | current_arch_start = FcCacheSkipToArch(fd, | |
c60ec7cc | 1113 | current_arch_machine_name); |
212c9f43 | 1114 | if (current_arch_start < 0) |
4262e0b3 | 1115 | goto bail1; |
212c9f43 PL |
1116 | |
1117 | lseek (fd, current_arch_start, SEEK_SET); | |
eb0cf671 | 1118 | if (FcCacheReadString (fd, candidate_arch_machine_name, |
212c9f43 | 1119 | sizeof (candidate_arch_machine_name)) == 0) |
4262e0b3 | 1120 | goto bail1; |
2304e38f | 1121 | |
c5411c4c | 1122 | while (FcCacheReadString (fd, subdirName, sizeof (subdirName)) && strlen (subdirName) > 0) |
8245771d | 1123 | FcStrSetAdd (dirs, (FcChar8 *)subdirName); |
2304e38f | 1124 | |
cd9bca69 | 1125 | if (!FcDirCacheConsume (fd, (const char *)dir, set, config)) |
eb0cf671 PL |
1126 | goto bail1; |
1127 | ||
1128 | close(fd); | |
eb0cf671 PL |
1129 | return FcTrue; |
1130 | ||
1131 | bail1: | |
2304e38f | 1132 | close (fd); |
eb0cf671 | 1133 | bail: |
eb0cf671 PL |
1134 | return FcFalse; |
1135 | } | |
1136 | ||
1137 | static FcBool | |
cd9bca69 | 1138 | FcDirCacheConsume (int fd, const char * dir, FcFontSet *set, FcConfig *config) |
eb0cf671 PL |
1139 | { |
1140 | FcCache metadata; | |
1141 | void * current_dir_block; | |
fd77c154 | 1142 | off_t pos; |
212c9f43 | 1143 | |
68355f38 PL |
1144 | if (read(fd, &metadata, sizeof(FcCache)) != sizeof(FcCache)) |
1145 | return FcFalse; | |
212c9f43 | 1146 | if (metadata.magic != FC_CACHE_MAGIC) |
eb0cf671 | 1147 | return FcFalse; |
212c9f43 | 1148 | |
2dbe7597 | 1149 | if (!metadata.count) |
05a98eaf PL |
1150 | { |
1151 | pos = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR)); | |
1152 | lseek (fd, pos, SEEK_SET); | |
eadadf48 PL |
1153 | if (config) |
1154 | FcConfigAddFontDir (config, (FcChar8 *)dir); | |
eb0cf671 | 1155 | return FcTrue; |
05a98eaf | 1156 | } |
2dbe7597 | 1157 | |
fd77c154 | 1158 | pos = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR)); |
2dbe7597 PL |
1159 | current_dir_block = mmap (0, metadata.count, |
1160 | PROT_READ, MAP_SHARED, fd, pos); | |
c60ec7cc | 1161 | lseek (fd, pos+metadata.count, SEEK_SET); |
2dbe7597 | 1162 | if (current_dir_block == MAP_FAILED) |
eb0cf671 | 1163 | return FcFalse; |
eb0cf671 | 1164 | |
e77c1718 | 1165 | FcCacheAddBankDir (metadata.bank, dir); |
cd9bca69 PL |
1166 | if (config) |
1167 | FcConfigAddFontDir (config, (FcChar8 *)dir); | |
e77c1718 | 1168 | |
b8948e85 PL |
1169 | if (!FcFontSetUnserialize (&metadata, set, current_dir_block)) |
1170 | return FcFalse; | |
1171 | ||
212c9f43 | 1172 | return FcTrue; |
eb0cf671 PL |
1173 | } |
1174 | ||
1175 | static void * | |
1176 | FcDirCacheProduce (FcFontSet *set, FcCache *metadata) | |
1177 | { | |
1178 | void * current_dir_block, * final_dir_block; | |
8245771d | 1179 | static unsigned int rand_state = 0; |
8e351527 | 1180 | int bank, needed_bytes_no_align; |
eb0cf671 PL |
1181 | |
1182 | if (!rand_state) | |
1183 | rand_state = time(0L); | |
1184 | bank = rand_r(&rand_state); | |
1185 | ||
1186 | while (FcCacheHaveBank(bank)) | |
1187 | bank = rand_r(&rand_state); | |
1188 | ||
1189 | memset (metadata, 0, sizeof(FcCache)); | |
1190 | FcFontSetNewBank(); | |
8e351527 PL |
1191 | needed_bytes_no_align = FcFontSetNeededBytes (set); |
1192 | metadata->count = needed_bytes_no_align + | |
7fd7221e | 1193 | FcFontSetNeededBytesAlign (); |
eb0cf671 PL |
1194 | metadata->magic = FC_CACHE_MAGIC; |
1195 | metadata->bank = bank; | |
1196 | ||
8e351527 PL |
1197 | if (!needed_bytes_no_align) /* not a failure, no fonts to write */ |
1198 | { | |
1199 | /* no, you don't really need to write any bytes at all. */ | |
1200 | metadata->count = 0; | |
eb0cf671 | 1201 | return 0; |
8e351527 | 1202 | } |
eb0cf671 PL |
1203 | |
1204 | current_dir_block = malloc (metadata->count); | |
1205 | if (!current_dir_block) | |
1206 | goto bail; | |
8e351527 PL |
1207 | // shut up valgrind |
1208 | memset (current_dir_block, 0, metadata->count); | |
eb0cf671 PL |
1209 | final_dir_block = FcFontSetDistributeBytes (metadata, current_dir_block); |
1210 | ||
8e351527 | 1211 | if ((void *)((char *)current_dir_block+metadata->count) < final_dir_block) |
eb0cf671 PL |
1212 | goto bail; |
1213 | ||
1214 | if (!FcFontSetSerialize (bank, set)) | |
1215 | goto bail; | |
1216 | ||
1217 | return current_dir_block; | |
212c9f43 | 1218 | |
4262e0b3 | 1219 | bail: |
eb0cf671 PL |
1220 | free (current_dir_block); |
1221 | return 0; | |
212c9f43 PL |
1222 | } |
1223 | ||
1224 | /* write serialized state to the cache file */ | |
1225 | FcBool | |
2304e38f | 1226 | FcDirCacheWrite (FcFontSet *set, FcStrSet *dirs, const FcChar8 *dir) |
212c9f43 | 1227 | { |
ea44e218 | 1228 | char *cache_file; |
3bfae75d | 1229 | char *cache_hashed; |
1d879de2 PL |
1230 | int fd, fd_orig, i, dirs_count; |
1231 | FcAtomic *atomic; | |
1232 | FcCache metadata; | |
1233 | off_t current_arch_start = 0, truncate_to; | |
ea44e218 PL |
1234 | char name_buf[FC_MAX_FILE_LEN]; |
1235 | int collisions; | |
8245771d | 1236 | |
1d879de2 | 1237 | char *current_arch_machine_name, * header; |
ea44e218 | 1238 | void *current_dir_block = 0; |
212c9f43 | 1239 | |
cd9bca69 PL |
1240 | dir = FcConfigNormalizeFontDir (FcConfigGetCurrent(), dir); |
1241 | if (!dir) | |
1242 | return FcFalse; | |
1243 | ||
ea44e218 | 1244 | cache_file = (char *)FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE); |
4262e0b3 PL |
1245 | if (!cache_file) |
1246 | goto bail; | |
1247 | ||
ea44e218 PL |
1248 | /* Ensure that we're not trampling a cache for some other dir. */ |
1249 | /* This is slightly different from FcDirCacheOpen, since it | |
1250 | * needs the filename, not the file descriptor. */ | |
1251 | fd = -1; collisions = 0; | |
1252 | do | |
1253 | { | |
3bfae75d PL |
1254 | cache_hashed = FcDirCacheHashName (cache_file, collisions++); |
1255 | if (!cache_hashed) | |
ea44e218 PL |
1256 | goto bail0; |
1257 | ||
1258 | if (fd > 0) | |
1259 | close (fd); | |
3bfae75d | 1260 | fd = open(cache_hashed, O_RDONLY); |
ea44e218 PL |
1261 | if (fd == -1) |
1262 | break; | |
c5411c4c PL |
1263 | if(!FcCacheReadString (fd, name_buf, sizeof (name_buf)) || !strlen(name_buf)) |
1264 | { | |
1265 | close (fd); | |
ea44e218 | 1266 | break; |
c5411c4c PL |
1267 | } |
1268 | close (fd); | |
ea44e218 PL |
1269 | |
1270 | if (strcmp (name_buf, cache_file) != 0) | |
1271 | continue; | |
1272 | } while (0); | |
1273 | ||
eb0cf671 | 1274 | current_dir_block = FcDirCacheProduce (set, &metadata); |
212c9f43 | 1275 | |
a9698bed | 1276 | if (metadata.count && !current_dir_block) |
ea44e218 | 1277 | goto bail1; |
212c9f43 | 1278 | |
4262e0b3 PL |
1279 | if (FcDebug () & FC_DBG_CACHE) |
1280 | printf ("FcDirCacheWriteDir cache_file \"%s\"\n", cache_file); | |
1281 | ||
3bfae75d | 1282 | atomic = FcAtomicCreate ((FcChar8 *)cache_hashed); |
1d879de2 | 1283 | if (!atomic) |
ea44e218 | 1284 | goto bail1; |
212c9f43 | 1285 | |
1d879de2 | 1286 | if (!FcAtomicLock (atomic)) |
ec760b17 PL |
1287 | { |
1288 | /* Now try rewriting the original version of the file. */ | |
1289 | FcAtomicDestroy (atomic); | |
1d879de2 | 1290 | |
3bfae75d | 1291 | atomic = FcAtomicCreate ((FcChar8 *)cache_file); |
ec760b17 PL |
1292 | fd_orig = open (cache_file, O_RDONLY); |
1293 | if (fd_orig == -1) | |
1294 | fd_orig = open((char *)FcAtomicOrigFile (atomic), O_RDONLY); | |
1295 | ||
1296 | fd = open((char *)FcAtomicNewFile (atomic), O_RDWR | O_CREAT, 0666); | |
1297 | if (fd == -1) | |
1298 | goto bail2; | |
1299 | } | |
1300 | ||
1301 | /* In all cases, try opening the real location of the cache file first. */ | |
1302 | /* (even if that's not atomic.) */ | |
1303 | fd_orig = open (cache_file, O_RDONLY); | |
1304 | if (fd_orig == -1) | |
1305 | fd_orig = open((char *)FcAtomicOrigFile (atomic), O_RDONLY); | |
1d879de2 PL |
1306 | |
1307 | fd = open((char *)FcAtomicNewFile (atomic), O_RDWR | O_CREAT, 0666); | |
1308 | if (fd == -1) | |
ec760b17 | 1309 | goto bail3; |
ea44e218 PL |
1310 | |
1311 | FcCacheWriteString (fd, cache_file); | |
1d879de2 | 1312 | |
eb0cf671 | 1313 | current_arch_machine_name = FcCacheMachineSignature (); |
1d879de2 PL |
1314 | current_arch_start = 0; |
1315 | ||
1316 | if (fd_orig != -1) | |
1317 | current_arch_start = | |
c60ec7cc | 1318 | FcCacheSkipToArch(fd_orig, current_arch_machine_name); |
1d879de2 | 1319 | |
212c9f43 | 1320 | if (current_arch_start < 0) |
f468f568 PL |
1321 | { |
1322 | off_t i = lseek(fd_orig, 0, SEEK_END); | |
1323 | if (i < strlen (FC_GLOBAL_MAGIC_COOKIE)+1) | |
1324 | i = strlen (FC_GLOBAL_MAGIC_COOKIE)+1; | |
1325 | current_arch_start = FcCacheNextOffset (i); | |
1326 | } | |
212c9f43 | 1327 | |
1d879de2 | 1328 | if (fd_orig != -1 && !FcCacheCopyOld(fd, fd_orig, current_arch_start)) |
ea44e218 | 1329 | goto bail4; |
1d879de2 PL |
1330 | |
1331 | if (fd_orig != -1) | |
1332 | close (fd_orig); | |
212c9f43 PL |
1333 | |
1334 | current_arch_start = lseek(fd, 0, SEEK_CUR); | |
1335 | if (ftruncate (fd, current_arch_start) == -1) | |
ea44e218 | 1336 | goto bail4; |
212c9f43 | 1337 | |
6aee8c6f PL |
1338 | /* allocate space for subdir names in this block */ |
1339 | dirs_count = 0; | |
1340 | for (i = 0; i < dirs->size; i++) | |
1341 | dirs_count += strlen((char *)dirs->strs[i]) + 1; | |
1342 | dirs_count ++; | |
1343 | ||
212c9f43 | 1344 | /* now write the address of the next offset */ |
6aee8c6f | 1345 | truncate_to = FcCacheNextOffset (FcCacheNextOffset (current_arch_start + sizeof (FcCache) + dirs_count) + metadata.count) - current_arch_start; |
2dbe7597 | 1346 | header = malloc (10 + strlen (current_arch_machine_name)); |
eb0cf671 | 1347 | if (!header) |
ea44e218 | 1348 | goto bail4; |
2dbe7597 PL |
1349 | sprintf (header, "%8x ", (int)truncate_to); |
1350 | strcat (header, current_arch_machine_name); | |
eb0cf671 | 1351 | if (!FcCacheWriteString (fd, header)) |
ea44e218 | 1352 | goto bail5; |
212c9f43 | 1353 | |
2304e38f | 1354 | for (i = 0; i < dirs->size; i++) |
8245771d | 1355 | FcCacheWriteString (fd, (char *)dirs->strs[i]); |
2304e38f PL |
1356 | FcCacheWriteString (fd, ""); |
1357 | ||
fff5a5af PL |
1358 | if (write (fd, &metadata, sizeof(FcCache)) != sizeof(FcCache)) |
1359 | { | |
68355f38 PL |
1360 | perror("write metadata"); |
1361 | goto bail5; | |
1362 | } | |
a9698bed PL |
1363 | if (metadata.count) |
1364 | { | |
68355f38 PL |
1365 | off_t off = FcCacheNextOffset (lseek(fd, 0, SEEK_END)); |
1366 | if (lseek (fd, off, SEEK_SET) != off) | |
1367 | perror("lseek"); | |
1368 | else if (write (fd, current_dir_block, metadata.count) != | |
1369 | metadata.count) | |
1370 | perror("write current_dir_block"); | |
a9698bed PL |
1371 | free (current_dir_block); |
1372 | } | |
4262e0b3 | 1373 | |
2dbe7597 | 1374 | /* this actually serves to pad out the cache file, if needed */ |
212c9f43 | 1375 | if (ftruncate (fd, current_arch_start + truncate_to) == -1) |
ea44e218 | 1376 | goto bail5; |
212c9f43 | 1377 | |
6f9fcb51 | 1378 | free (header); |
212c9f43 | 1379 | close(fd); |
1d879de2 | 1380 | if (!FcAtomicReplaceOrig(atomic)) |
ea44e218 | 1381 | goto bail5; |
3bfae75d | 1382 | FcStrFree ((FcChar8 *)cache_hashed); |
575a37b7 | 1383 | FcStrFree ((FcChar8 *)cache_file); |
1d879de2 PL |
1384 | FcAtomicUnlock (atomic); |
1385 | FcAtomicDestroy (atomic); | |
212c9f43 PL |
1386 | return FcTrue; |
1387 | ||
ea44e218 | 1388 | bail5: |
0230c9f8 | 1389 | free (header); |
ea44e218 | 1390 | bail4: |
1d879de2 | 1391 | close (fd); |
ea44e218 | 1392 | bail3: |
1d879de2 | 1393 | FcAtomicUnlock (atomic); |
ea44e218 | 1394 | bail2: |
1d879de2 | 1395 | FcAtomicDestroy (atomic); |
ea44e218 | 1396 | bail1: |
3bfae75d | 1397 | FcStrFree ((FcChar8 *)cache_hashed); |
eb0cf671 | 1398 | bail0: |
8245771d | 1399 | unlink ((char *)cache_file); |
575a37b7 | 1400 | FcStrFree ((FcChar8 *)cache_file); |
1d879de2 PL |
1401 | if (current_dir_block) |
1402 | free (current_dir_block); | |
1403 | bail: | |
212c9f43 PL |
1404 | return FcFalse; |
1405 | } | |
1406 | ||
2dbe7597 | 1407 | static char * |
eb0cf671 | 1408 | FcCacheMachineSignature () |
2dbe7597 PL |
1409 | { |
1410 | static char buf[MACHINE_SIGNATURE_SIZE]; | |
7fd7221e | 1411 | int32_t magic = ENDIAN_TEST; |
2dbe7597 PL |
1412 | char * m = (char *)&magic; |
1413 | ||
1414 | sprintf (buf, "%2x%2x%2x%2x " | |
1415 | "%4x %4x %4x %4x %4x %4x %4x %4x %4x %4x %4x %4x " | |
7fd7221e | 1416 | "%4x %4x %4x %4x %4x %4x %4x %4x\n", |
2dbe7597 | 1417 | m[0], m[1], m[2], m[3], |
cd310911 PL |
1418 | (unsigned int)sizeof (char), |
1419 | (unsigned int)sizeof (char *), | |
1420 | (unsigned int)sizeof (int), | |
1421 | (unsigned int)sizeof (FcPattern), | |
1422 | (unsigned int)sizeof (FcPatternEltPtr), | |
1423 | (unsigned int)sizeof (struct _FcPatternElt *), | |
1424 | (unsigned int)sizeof (FcPatternElt), | |
1425 | (unsigned int)sizeof (FcObjectPtr), | |
1426 | (unsigned int)sizeof (FcValueListPtr), | |
1427 | (unsigned int)sizeof (FcValue), | |
1428 | (unsigned int)sizeof (FcValueBinding), | |
1429 | (unsigned int)sizeof (struct _FcValueList *), | |
1430 | (unsigned int)sizeof (FcCharSet), | |
1431 | (unsigned int)sizeof (FcCharLeaf **), | |
1432 | (unsigned int)sizeof (FcChar16 *), | |
1433 | (unsigned int)sizeof (FcChar16), | |
1434 | (unsigned int)sizeof (FcCharLeaf), | |
1435 | (unsigned int)sizeof (FcChar32), | |
7fd7221e PL |
1436 | (unsigned int)sizeof (FcCache), |
1437 | (unsigned int)sysconf(_SC_PAGESIZE)); | |
2dbe7597 PL |
1438 | |
1439 | return buf; | |
1440 | } | |
1441 | ||
4262e0b3 | 1442 | static int banks_ptr = 0, banks_alloc = 0; |
b8948e85 | 1443 | int * _fcBankId = 0, * _fcBankIdx = 0; |
e77c1718 | 1444 | static const char ** bankDirs = 0; |
4262e0b3 | 1445 | |
eb0cf671 | 1446 | static FcBool |
4262e0b3 PL |
1447 | FcCacheHaveBank (int bank) |
1448 | { | |
1449 | int i; | |
1450 | ||
1451 | if (bank < FC_BANK_FIRST) | |
1452 | return FcTrue; | |
1453 | ||
1454 | for (i = 0; i < banks_ptr; i++) | |
b8948e85 | 1455 | if (_fcBankId[i] == bank) |
4262e0b3 PL |
1456 | return FcTrue; |
1457 | ||
1458 | return FcFalse; | |
1459 | } | |
1460 | ||
1461 | int | |
b8948e85 | 1462 | FcCacheBankToIndexMTF (int bank) |
4262e0b3 | 1463 | { |
751932dd | 1464 | int i, j; |
4262e0b3 PL |
1465 | |
1466 | for (i = 0; i < banks_ptr; i++) | |
b8948e85 | 1467 | if (_fcBankId[_fcBankIdx[i]] == bank) |
751932dd | 1468 | { |
b8948e85 | 1469 | int t = _fcBankIdx[i]; |
751932dd PL |
1470 | |
1471 | for (j = i; j > 0; j--) | |
b8948e85 PL |
1472 | _fcBankIdx[j] = _fcBankIdx[j-1]; |
1473 | _fcBankIdx[0] = t; | |
751932dd PL |
1474 | return t; |
1475 | } | |
4262e0b3 | 1476 | |
2dbe7597 | 1477 | if (banks_ptr >= banks_alloc) |
4262e0b3 | 1478 | { |
751932dd | 1479 | int * b, * bidx; |
e77c1718 PL |
1480 | const char ** bds; |
1481 | ||
b8948e85 | 1482 | b = realloc (_fcBankId, (banks_alloc + 4) * sizeof(int)); |
4262e0b3 PL |
1483 | if (!b) |
1484 | return -1; | |
b8948e85 | 1485 | _fcBankId = b; |
751932dd | 1486 | |
b8948e85 | 1487 | bidx = realloc (_fcBankIdx, (banks_alloc + 4) * sizeof(int)); |
751932dd PL |
1488 | if (!bidx) |
1489 | return -1; | |
b8948e85 | 1490 | _fcBankIdx = bidx; |
751932dd | 1491 | |
e77c1718 PL |
1492 | bds = realloc (bankDirs, (banks_alloc + 4) * sizeof (char *)); |
1493 | if (!bds) | |
1494 | return -1; | |
1495 | bankDirs = bds; | |
1496 | ||
4262e0b3 PL |
1497 | banks_alloc += 4; |
1498 | } | |
1499 | ||
1500 | i = banks_ptr++; | |
b8948e85 PL |
1501 | _fcBankId[i] = bank; |
1502 | _fcBankIdx[i] = i; | |
4262e0b3 PL |
1503 | return i; |
1504 | } | |
e77c1718 PL |
1505 | |
1506 | static void | |
1507 | FcCacheAddBankDir (int bank, const char * dir) | |
1508 | { | |
b8948e85 | 1509 | int bi = FcCacheBankToIndexMTF (bank); |
e77c1718 PL |
1510 | |
1511 | if (bi < 0) | |
1512 | return; | |
1513 | ||
1514 | bankDirs[bi] = (const char *)FcStrCopy ((FcChar8 *)dir); | |
1515 | } | |
1516 | ||
1517 | const char * | |
1518 | FcCacheFindBankDir (int bank) | |
1519 | { | |
1520 | int bi = FcCacheBankToIndex (bank); | |
1521 | return bankDirs[bi]; | |
1522 | } | |
1523 | ||
ea44e218 PL |
1524 | /* |
1525 | * This code implements the MD5 message-digest algorithm. | |
1526 | * The algorithm is due to Ron Rivest. This code was | |
1527 | * written by Colin Plumb in 1993, no copyright is claimed. | |
1528 | * This code is in the public domain; do with it what you wish. | |
1529 | * | |
1530 | * Equivalent code is available from RSA Data Security, Inc. | |
1531 | * This code has been tested against that, and is equivalent, | |
1532 | * except that you don't need to include two pages of legalese | |
1533 | * with every copy. | |
1534 | * | |
1535 | * To compute the message digest of a chunk of bytes, declare an | |
1536 | * MD5Context structure, pass it to MD5Init, call MD5Update as | |
1537 | * needed on buffers full of bytes, and then call MD5Final, which | |
1538 | * will fill a supplied 16-byte array with the digest. | |
1539 | */ | |
1540 | ||
1541 | #ifndef HIGHFIRST | |
1542 | #define byteReverse(buf, len) /* Nothing */ | |
1543 | #else | |
1544 | /* | |
1545 | * Note: this code is harmless on little-endian machines. | |
1546 | */ | |
1547 | void byteReverse(unsigned char *buf, unsigned longs) | |
1548 | { | |
1549 | FcChar32 t; | |
1550 | do { | |
1551 | t = (FcChar32) ((unsigned) buf[3] << 8 | buf[2]) << 16 | | |
1552 | ((unsigned) buf[1] << 8 | buf[0]); | |
1553 | *(FcChar32 *) buf = t; | |
1554 | buf += 4; | |
1555 | } while (--longs); | |
1556 | } | |
1557 | #endif | |
1558 | ||
1559 | /* | |
1560 | * Start MD5 accumulation. Set bit count to 0 and buffer to mysterious | |
1561 | * initialization constants. | |
1562 | */ | |
1563 | static void MD5Init(struct MD5Context *ctx) | |
1564 | { | |
1565 | ctx->buf[0] = 0x67452301; | |
1566 | ctx->buf[1] = 0xefcdab89; | |
1567 | ctx->buf[2] = 0x98badcfe; | |
1568 | ctx->buf[3] = 0x10325476; | |
1569 | ||
1570 | ctx->bits[0] = 0; | |
1571 | ctx->bits[1] = 0; | |
1572 | } | |
1573 | ||
1574 | /* | |
1575 | * Update context to reflect the concatenation of another buffer full | |
1576 | * of bytes. | |
1577 | */ | |
1578 | static void MD5Update(struct MD5Context *ctx, unsigned char *buf, unsigned len) | |
1579 | { | |
1580 | FcChar32 t; | |
1581 | ||
1582 | /* Update bitcount */ | |
1583 | ||
1584 | t = ctx->bits[0]; | |
1585 | if ((ctx->bits[0] = t + ((FcChar32) len << 3)) < t) | |
1586 | ctx->bits[1]++; /* Carry from low to high */ | |
1587 | ctx->bits[1] += len >> 29; | |
1588 | ||
1589 | t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data */ | |
1590 | ||
1591 | /* Handle any leading odd-sized chunks */ | |
1592 | ||
1593 | if (t) { | |
1594 | unsigned char *p = (unsigned char *) ctx->in + t; | |
1595 | ||
1596 | t = 64 - t; | |
1597 | if (len < t) { | |
1598 | memcpy(p, buf, len); | |
1599 | return; | |
1600 | } | |
1601 | memcpy(p, buf, t); | |
1602 | byteReverse(ctx->in, 16); | |
1603 | MD5Transform(ctx->buf, (FcChar32 *) ctx->in); | |
1604 | buf += t; | |
1605 | len -= t; | |
1606 | } | |
1607 | /* Process data in 64-byte chunks */ | |
1608 | ||
1609 | while (len >= 64) { | |
1610 | memcpy(ctx->in, buf, 64); | |
1611 | byteReverse(ctx->in, 16); | |
1612 | MD5Transform(ctx->buf, (FcChar32 *) ctx->in); | |
1613 | buf += 64; | |
1614 | len -= 64; | |
1615 | } | |
1616 | ||
1617 | /* Handle any remaining bytes of data. */ | |
1618 | ||
1619 | memcpy(ctx->in, buf, len); | |
1620 | } | |
1621 | ||
1622 | /* | |
1623 | * Final wrapup - pad to 64-byte boundary with the bit pattern | |
1624 | * 1 0* (64-bit count of bits processed, MSB-first) | |
1625 | */ | |
1626 | static void MD5Final(unsigned char digest[16], struct MD5Context *ctx) | |
1627 | { | |
1628 | unsigned count; | |
1629 | unsigned char *p; | |
1630 | ||
1631 | /* Compute number of bytes mod 64 */ | |
1632 | count = (ctx->bits[0] >> 3) & 0x3F; | |
1633 | ||
1634 | /* Set the first char of padding to 0x80. This is safe since there is | |
1635 | always at least one byte free */ | |
1636 | p = ctx->in + count; | |
1637 | *p++ = 0x80; | |
1638 | ||
1639 | /* Bytes of padding needed to make 64 bytes */ | |
1640 | count = 64 - 1 - count; | |
1641 | ||
1642 | /* Pad out to 56 mod 64 */ | |
1643 | if (count < 8) { | |
1644 | /* Two lots of padding: Pad the first block to 64 bytes */ | |
1645 | memset(p, 0, count); | |
1646 | byteReverse(ctx->in, 16); | |
1647 | MD5Transform(ctx->buf, (FcChar32 *) ctx->in); | |
1648 | ||
1649 | /* Now fill the next block with 56 bytes */ | |
1650 | memset(ctx->in, 0, 56); | |
1651 | } else { | |
1652 | /* Pad block to 56 bytes */ | |
1653 | memset(p, 0, count - 8); | |
1654 | } | |
1655 | byteReverse(ctx->in, 14); | |
1656 | ||
1657 | /* Append length in bits and transform */ | |
1658 | ((FcChar32 *) ctx->in)[14] = ctx->bits[0]; | |
1659 | ((FcChar32 *) ctx->in)[15] = ctx->bits[1]; | |
1660 | ||
1661 | MD5Transform(ctx->buf, (FcChar32 *) ctx->in); | |
1662 | byteReverse((unsigned char *) ctx->buf, 4); | |
1663 | memcpy(digest, ctx->buf, 16); | |
1664 | memset(ctx, 0, sizeof(ctx)); /* In case it's sensitive */ | |
1665 | } | |
1666 | ||
1667 | ||
1668 | /* The four core functions - F1 is optimized somewhat */ | |
1669 | ||
1670 | /* #define F1(x, y, z) (x & y | ~x & z) */ | |
1671 | #define F1(x, y, z) (z ^ (x & (y ^ z))) | |
1672 | #define F2(x, y, z) F1(z, x, y) | |
1673 | #define F3(x, y, z) (x ^ y ^ z) | |
1674 | #define F4(x, y, z) (y ^ (x | ~z)) | |
1675 | ||
1676 | /* This is the central step in the MD5 algorithm. */ | |
1677 | #define MD5STEP(f, w, x, y, z, data, s) \ | |
1678 | ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x ) | |
1679 | ||
1680 | /* | |
1681 | * The core of the MD5 algorithm, this alters an existing MD5 hash to | |
1682 | * reflect the addition of 16 longwords of new data. MD5Update blocks | |
1683 | * the data and converts bytes into longwords for this routine. | |
1684 | */ | |
1685 | static void MD5Transform(FcChar32 buf[4], FcChar32 in[16]) | |
1686 | { | |
1687 | register FcChar32 a, b, c, d; | |
1688 | ||
1689 | a = buf[0]; | |
1690 | b = buf[1]; | |
1691 | c = buf[2]; | |
1692 | d = buf[3]; | |
1693 | ||
1694 | MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7); | |
1695 | MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12); | |
1696 | MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17); | |
1697 | MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22); | |
1698 | MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7); | |
1699 | MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12); | |
1700 | MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17); | |
1701 | MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22); | |
1702 | MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7); | |
1703 | MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12); | |
1704 | MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17); | |
1705 | MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22); | |
1706 | MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7); | |
1707 | MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12); | |
1708 | MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17); | |
1709 | MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22); | |
1710 | ||
1711 | MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5); | |
1712 | MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9); | |
1713 | MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14); | |
1714 | MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20); | |
1715 | MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5); | |
1716 | MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9); | |
1717 | MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14); | |
1718 | MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20); | |
1719 | MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5); | |
1720 | MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9); | |
1721 | MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14); | |
1722 | MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20); | |
1723 | MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5); | |
1724 | MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9); | |
1725 | MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14); | |
1726 | MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20); | |
1727 | ||
1728 | MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4); | |
1729 | MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11); | |
1730 | MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16); | |
1731 | MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23); | |
1732 | MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4); | |
1733 | MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11); | |
1734 | MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16); | |
1735 | MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23); | |
1736 | MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4); | |
1737 | MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11); | |
1738 | MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16); | |
1739 | MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23); | |
1740 | MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4); | |
1741 | MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11); | |
1742 | MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16); | |
1743 | MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23); | |
1744 | ||
1745 | MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6); | |
1746 | MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10); | |
1747 | MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15); | |
1748 | MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21); | |
1749 | MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6); | |
1750 | MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10); | |
1751 | MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15); | |
1752 | MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21); | |
1753 | MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6); | |
1754 | MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10); | |
1755 | MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15); | |
1756 | MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21); | |
1757 | MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6); | |
1758 | MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10); | |
1759 | MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15); | |
1760 | MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21); | |
1761 | ||
1762 | buf[0] += a; | |
1763 | buf[1] += b; | |
1764 | buf[2] += c; | |
1765 | buf[3] += d; | |
1766 | } |