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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 | ||
f045376c | 26 | #include "fcint.h" |
cf65c055 | 27 | #include "../fc-arch/fcarch.h" |
212c9f43 | 28 | #include <fcntl.h> |
4262e0b3 | 29 | #include <dirent.h> |
ea44e218 | 30 | #include <string.h> |
fd77c154 | 31 | #include <sys/types.h> |
d6217cc6 | 32 | #if defined(HAVE_MMAP) || defined(__CYGWIN__) |
93f67dfc | 33 | # include <unistd.h> |
d6217cc6 | 34 | # include <sys/mman.h> |
93f67dfc PL |
35 | #elif defined(_WIN32) |
36 | # include <windows.h> | |
d6217cc6 | 37 | #endif |
24330d27 | 38 | |
2dbe7597 | 39 | #define ENDIAN_TEST 0x12345678 |
f2fb985c | 40 | #define MACHINE_SIGNATURE_SIZE (9 + 5*20 + 1) |
d6217cc6 PL |
41 | /* for when we don't have sysconf: */ |
42 | #define FC_HARDCODED_PAGESIZE 8192 | |
2dbe7597 | 43 | |
879af706 PL |
44 | #ifndef O_BINARY |
45 | #define O_BINARY 0 | |
46 | #endif | |
47 | ||
ea44e218 | 48 | static int |
7410e40b | 49 | FcDirCacheOpen (FcConfig *config, const FcChar8 *dir, FcChar8 **cache_path); |
ea44e218 | 50 | |
eb0cf671 | 51 | static off_t |
c60ec7cc | 52 | FcCacheSkipToArch (int fd, const char * arch); |
1b7be377 | 53 | |
eb0cf671 | 54 | static FcBool |
1d879de2 | 55 | FcCacheCopyOld (int fd, int fd_orig, off_t start); |
1b7be377 | 56 | |
eb0cf671 PL |
57 | static void * |
58 | FcDirCacheProduce (FcFontSet *set, FcCache * metadata); | |
1b7be377 PL |
59 | |
60 | static FcBool | |
cd9bca69 | 61 | FcDirCacheConsume (int fd, const char * dir, FcFontSet *set, FcConfig *config); |
1b7be377 | 62 | |
eb0cf671 PL |
63 | static int |
64 | FcCacheNextOffset(off_t w); | |
1b7be377 | 65 | |
eb0cf671 PL |
66 | static char * |
67 | FcCacheMachineSignature (void); | |
1b7be377 PL |
68 | |
69 | static FcBool | |
eb0cf671 | 70 | FcCacheHaveBank (int bank); |
1b7be377 | 71 | |
e77c1718 PL |
72 | static void |
73 | FcCacheAddBankDir (int bank, const char * dir); | |
74 | ||
ea44e218 PL |
75 | struct MD5Context { |
76 | FcChar32 buf[4]; | |
77 | FcChar32 bits[2]; | |
78 | unsigned char in[64]; | |
79 | }; | |
80 | ||
81 | static void MD5Init(struct MD5Context *ctx); | |
82 | static void MD5Update(struct MD5Context *ctx, unsigned char *buf, unsigned len); | |
83 | static void MD5Final(unsigned char digest[16], struct MD5Context *ctx); | |
84 | static void MD5Transform(FcChar32 buf[4], FcChar32 in[16]); | |
85 | ||
eb0cf671 | 86 | #define FC_DBG_CACHE_REF 1024 |
1b7be377 | 87 | |
8245771d PL |
88 | static char * |
89 | FcCacheReadString (int fd, char *dest, int len) | |
24330d27 | 90 | { |
799157db PL |
91 | int size; |
92 | int slen; | |
24330d27 | 93 | |
24330d27 | 94 | if (len == 0) |
03a212e5 | 95 | return 0; |
799157db PL |
96 | |
97 | size = read (fd, dest, len-1); | |
98 | ||
99 | if (size > 0) | |
24330d27 | 100 | { |
799157db PL |
101 | dest[size] = '\0'; |
102 | slen = strlen (dest); | |
103 | ||
104 | lseek (fd, slen - size + 1, SEEK_CUR); | |
105 | return slen < len ? dest : 0; | |
24330d27 | 106 | } |
799157db | 107 | |
ccb3e93b | 108 | return 0; |
24330d27 KP |
109 | } |
110 | ||
ea44e218 PL |
111 | static void |
112 | FcCacheSkipString (int fd) | |
113 | { | |
799157db PL |
114 | char buf[256]; |
115 | int size; | |
116 | int slen; | |
ea44e218 | 117 | |
799157db | 118 | while ( (size = read (fd, buf, sizeof (buf)-1)) > 0) |
ea44e218 | 119 | { |
799157db PL |
120 | buf [size] = '\0'; |
121 | slen = strlen (buf); | |
122 | if (slen < size) | |
123 | { | |
124 | lseek (fd, slen - size + 1, SEEK_CUR); | |
125 | return; | |
126 | } | |
ea44e218 | 127 | } |
ea44e218 PL |
128 | } |
129 | ||
24330d27 | 130 | static FcBool |
8245771d | 131 | FcCacheWriteString (int fd, const char *chars) |
327a7fd4 | 132 | { |
212c9f43 | 133 | if (write (fd, chars, strlen(chars)+1) != strlen(chars)+1) |
327a7fd4 | 134 | return FcFalse; |
327a7fd4 KP |
135 | return FcTrue; |
136 | } | |
137 | ||
eb0cf671 PL |
138 | static void |
139 | FcGlobalCacheDirDestroy (FcGlobalCacheDir *d) | |
1b7be377 | 140 | { |
971cf180 | 141 | FcStrSetDestroy (d->subdirs); |
5e678e94 PL |
142 | FcMemFree (FC_MEM_STRING, strlen (d->name)+1); |
143 | free (d->name); | |
144 | FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCacheDir)); | |
145 | free (d); | |
1b7be377 PL |
146 | } |
147 | ||
eb0cf671 PL |
148 | FcGlobalCache * |
149 | FcGlobalCacheCreate (void) | |
1b7be377 | 150 | { |
eb0cf671 | 151 | FcGlobalCache *cache; |
1b7be377 | 152 | |
eb0cf671 PL |
153 | cache = malloc (sizeof (FcGlobalCache)); |
154 | if (!cache) | |
155 | return 0; | |
156 | FcMemAlloc (FC_MEM_CACHE, sizeof (FcGlobalCache)); | |
157 | cache->dirs = 0; | |
158 | cache->updated = FcFalse; | |
159 | cache->fd = -1; | |
160 | return cache; | |
1b7be377 PL |
161 | } |
162 | ||
eb0cf671 PL |
163 | void |
164 | FcGlobalCacheDestroy (FcGlobalCache *cache) | |
327a7fd4 | 165 | { |
eb0cf671 | 166 | FcGlobalCacheDir *d, *next; |
327a7fd4 | 167 | |
eb0cf671 | 168 | for (d = cache->dirs; d; d = next) |
327a7fd4 | 169 | { |
eb0cf671 PL |
170 | next = d->next; |
171 | FcGlobalCacheDirDestroy (d); | |
327a7fd4 | 172 | } |
eb0cf671 | 173 | FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCache)); |
62a4a845 PL |
174 | if (cache->fd != -1) |
175 | close (cache->fd); | |
eb0cf671 | 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 | |
eb0cf671 | 323 | for (d = cache->dirs; d; d = d->next) |
1b7be377 | 324 | { |
fff5a5af | 325 | if (strcmp (d->name, dir) == 0) |
1b7be377 | 326 | { |
fff5a5af | 327 | if (d->state == FcGCDirDisabled) |
eb0cf671 | 328 | return FcFalse; |
3616cbe2 | 329 | |
fff5a5af PL |
330 | if (d->state == FcGCDirFileRead) |
331 | { | |
332 | lseek (cache->fd, d->offset, SEEK_SET); | |
333 | if (!FcDirCacheConsume (cache->fd, d->name, set, config)) | |
334 | return FcFalse; | |
335 | ||
3616cbe2 PL |
336 | for (i = 0; i < d->subdirs->num; i++) |
337 | FcStrSetAdd (dirs, (FcChar8 *)d->subdirs->strs[i]); | |
338 | ||
fff5a5af PL |
339 | d->state = FcGCDirConsumed; |
340 | } | |
341 | return FcTrue; | |
1b7be377 | 342 | } |
1b7be377 | 343 | } |
1b7be377 | 344 | |
fff5a5af | 345 | return FcFalse; |
1b7be377 PL |
346 | } |
347 | ||
fff5a5af PL |
348 | static FcGlobalCacheDir * |
349 | FcGlobalCacheDirFind (FcGlobalCache *cache, const char *name) | |
350 | { | |
351 | FcGlobalCacheDir * d; | |
352 | ||
353 | if (!cache || !name) | |
354 | return NULL; | |
355 | ||
356 | for (d = cache->dirs; d; d = d->next) | |
357 | if (strcmp((const char *)d->name, (const char *)name) == 0) | |
358 | return d; | |
359 | ||
360 | return NULL; | |
361 | } | |
362 | ||
eb0cf671 PL |
363 | FcBool |
364 | FcGlobalCacheUpdate (FcGlobalCache *cache, | |
971cf180 | 365 | FcStrSet *dirs, |
db50cbda | 366 | const char *name, |
8a0b0ed6 PL |
367 | FcFontSet *set, |
368 | FcConfig *config) | |
1b7be377 | 369 | { |
971cf180 PL |
370 | FcGlobalCacheDir *d; |
371 | int i; | |
24330d27 | 372 | |
fff5a5af PL |
373 | d = FcGlobalCacheDirFind (cache, name); |
374 | ||
eb0cf671 | 375 | if (!d) |
24330d27 | 376 | { |
eb0cf671 PL |
377 | d = malloc (sizeof (FcGlobalCacheDir)); |
378 | if (!d) | |
379 | return FcFalse; | |
380 | d->next = cache->dirs; | |
381 | cache->dirs = d; | |
fff5a5af PL |
382 | } else { |
383 | /* free old resources */ | |
384 | FcStrFree ((FcChar8 *)d->name); | |
385 | free (d->ent); | |
386 | FcStrSetDestroy (d->subdirs); | |
24330d27 | 387 | } |
24330d27 | 388 | |
eb0cf671 | 389 | cache->updated = FcTrue; |
24330d27 | 390 | |
8245771d | 391 | d->name = (char *)FcStrCopy ((FcChar8 *)name); |
eb0cf671 PL |
392 | d->ent = FcDirCacheProduce (set, &d->metadata); |
393 | d->offset = 0; | |
971cf180 | 394 | d->subdirs = FcStrSetCreate(); |
fff5a5af | 395 | d->state = FcGCDirUpdated; |
971cf180 PL |
396 | for (i = 0; i < dirs->num; i++) |
397 | FcStrSetAdd (d->subdirs, dirs->strs[i]); | |
eb0cf671 | 398 | return FcTrue; |
24330d27 KP |
399 | } |
400 | ||
401 | FcBool | |
327a7fd4 | 402 | FcGlobalCacheSave (FcGlobalCache *cache, |
8a0b0ed6 PL |
403 | const FcChar8 *cache_file, |
404 | FcConfig *config) | |
24330d27 | 405 | { |
0d745819 | 406 | int fd, fd_orig; |
327a7fd4 | 407 | FcGlobalCacheDir *dir; |
327a7fd4 | 408 | FcAtomic *atomic; |
eb0cf671 PL |
409 | off_t current_arch_start = 0, truncate_to; |
410 | char * current_arch_machine_name, * header; | |
24330d27 | 411 | |
eb0cf671 | 412 | if (!cache->updated) |
24330d27 KP |
413 | return FcTrue; |
414 | ||
daeed6e0 | 415 | #if defined (HAVE_GETUID) && defined (HAVE_GETEUID) |
a391da8f KP |
416 | /* Set-UID programs can't safely update the cache */ |
417 | if (getuid () != geteuid ()) | |
418 | return FcFalse; | |
daeed6e0 | 419 | #endif |
a391da8f | 420 | |
134f6011 KP |
421 | atomic = FcAtomicCreate (cache_file); |
422 | if (!atomic) | |
1d879de2 PL |
423 | return FcFalse; |
424 | ||
134f6011 | 425 | if (!FcAtomicLock (atomic)) |
24330d27 | 426 | goto bail1; |
879af706 | 427 | fd = open ((char *) FcAtomicNewFile(atomic), O_RDWR | O_CREAT | O_BINARY, |
eb0cf671 PL |
428 | S_IRUSR | S_IWUSR); |
429 | if (fd == -1) | |
24330d27 | 430 | goto bail2; |
f468f568 | 431 | FcCacheWriteString (fd, FC_GLOBAL_MAGIC_COOKIE); |
24330d27 | 432 | |
879af706 | 433 | fd_orig = open ((char *) FcAtomicOrigFile(atomic), O_RDONLY | O_BINARY); |
1d879de2 | 434 | |
eb0cf671 | 435 | current_arch_machine_name = FcCacheMachineSignature (); |
1d879de2 PL |
436 | if (fd_orig == -1) |
437 | current_arch_start = 0; | |
438 | else | |
439 | current_arch_start = FcCacheSkipToArch (fd_orig, | |
c60ec7cc | 440 | current_arch_machine_name); |
1d879de2 | 441 | |
eb0cf671 | 442 | if (current_arch_start < 0) |
f468f568 PL |
443 | { |
444 | off_t i = lseek(fd_orig, 0, SEEK_END); | |
445 | if (i < strlen (FC_GLOBAL_MAGIC_COOKIE)+1) | |
446 | i = strlen (FC_GLOBAL_MAGIC_COOKIE)+1; | |
447 | current_arch_start = FcCacheNextOffset (i); | |
448 | } | |
eb0cf671 | 449 | |
1d879de2 PL |
450 | if (!FcCacheCopyOld(fd, fd_orig, current_arch_start)) |
451 | goto bail3; | |
452 | ||
eb0cf671 | 453 | current_arch_start = lseek(fd, 0, SEEK_CUR); |
d6217cc6 | 454 | #if defined (HAVE_FTRUNCATE) |
eb0cf671 | 455 | if (ftruncate (fd, current_arch_start) == -1) |
1d879de2 | 456 | goto bail3; |
d6217cc6 PL |
457 | #else |
458 | #if defined (HAVE_CHSIZE) | |
459 | if (chsize (fd, current_arch_start) == -1) | |
460 | goto bail3; | |
461 | #else | |
462 | goto bail3; | |
463 | #endif | |
464 | #endif | |
eb0cf671 | 465 | |
03a212e5 PL |
466 | header = malloc (10 + strlen (current_arch_machine_name)); |
467 | if (!header) | |
1d879de2 | 468 | goto bail3; |
03a212e5 | 469 | |
8cb4c56d | 470 | truncate_to = current_arch_start + strlen(current_arch_machine_name) + 11; |
eb0cf671 | 471 | for (dir = cache->dirs; dir; dir = dir->next) |
24330d27 | 472 | { |
0d745819 PL |
473 | int i; |
474 | ||
fff5a5af PL |
475 | if (dir->state == FcGCDirDisabled) |
476 | continue; | |
eb0cf671 PL |
477 | truncate_to += strlen(dir->name) + 1; |
478 | truncate_to += sizeof (FcCache); | |
1c5b6345 | 479 | truncate_to = FcCacheNextOffset (truncate_to); |
eb0cf671 | 480 | truncate_to += dir->metadata.count; |
971cf180 PL |
481 | |
482 | for (i = 0; i < dir->subdirs->size; i++) | |
483 | truncate_to += strlen((char *)dir->subdirs->strs[i]) + 1; | |
484 | truncate_to ++; | |
eb0cf671 PL |
485 | } |
486 | truncate_to -= current_arch_start; | |
eb0cf671 | 487 | |
8cb4c56d PL |
488 | sprintf (header, "%8x ", (int)truncate_to); |
489 | strcat (header, current_arch_machine_name); | |
490 | if (!FcCacheWriteString (fd, header)) | |
1d879de2 | 491 | goto bail4; |
8cb4c56d | 492 | |
c814c301 PL |
493 | free (header); |
494 | ||
eb0cf671 PL |
495 | for (dir = cache->dirs; dir; dir = dir->next) |
496 | { | |
0d745819 | 497 | int i; |
fff5a5af PL |
498 | const char * d; |
499 | off_t off; | |
971cf180 | 500 | |
fff5a5af PL |
501 | if (!dir->name || dir->state == FcGCDirDisabled) |
502 | continue; | |
db50cbda | 503 | d = dir->name; |
fff5a5af PL |
504 | if (!d) |
505 | continue; | |
971cf180 | 506 | |
fff5a5af PL |
507 | if (dir->metadata.count && !dir->ent) |
508 | { | |
509 | if (dir->state == FcGCDirUpdated || fd_orig < 0) | |
68355f38 | 510 | { |
fff5a5af | 511 | fprintf(stderr, "Invalid metadata entry for %s, skipping...\n", d); |
68355f38 PL |
512 | continue; |
513 | } | |
fff5a5af PL |
514 | /* copy the old content */ |
515 | dir->ent = malloc (dir->metadata.count); | |
516 | if (!dir->ent) | |
68355f38 | 517 | { |
fff5a5af | 518 | perror("malloc error"); |
68355f38 PL |
519 | continue; |
520 | } | |
fff5a5af PL |
521 | off = FcCacheNextOffset (dir->offset + sizeof(FcCache)); |
522 | if (lseek (fd_orig, off, SEEK_SET) != off) | |
523 | { | |
524 | perror("lseek"); | |
525 | free(dir->ent); | |
526 | continue; | |
527 | } | |
528 | if (read (fd_orig, dir->ent, dir->metadata.count) | |
529 | != dir->metadata.count) | |
530 | { | |
531 | perror("read"); | |
532 | free(dir->ent); | |
533 | continue; | |
534 | } | |
535 | } | |
536 | ||
537 | FcCacheWriteString (fd, d); | |
538 | ||
539 | for (i = 0; i < dir->subdirs->size; i++) | |
540 | FcCacheWriteString (fd, (char *)dir->subdirs->strs[i]); | |
541 | FcCacheWriteString (fd, ""); | |
542 | ||
543 | if (write (fd, &dir->metadata, sizeof(FcCache)) != sizeof(FcCache)) | |
544 | { | |
545 | perror ("write metadata"); | |
546 | free (dir->ent); | |
547 | continue; | |
548 | } | |
549 | off = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR)); | |
550 | if (lseek (fd, off, SEEK_SET) != off) | |
551 | { | |
552 | perror ("lseek"); | |
553 | free (dir->ent); | |
554 | continue; | |
555 | } | |
556 | if (dir->metadata.count) | |
557 | { | |
68355f38 PL |
558 | if (write (fd, dir->ent, dir->metadata.count) != dir->metadata.count) |
559 | { | |
560 | perror ("write dirent"); | |
561 | free (dir->ent); | |
562 | continue; | |
563 | } | |
68355f38 | 564 | } |
fff5a5af | 565 | free (dir->ent); |
24330d27 | 566 | } |
eb0cf671 | 567 | FcCacheWriteString (fd, ""); |
24330d27 | 568 | |
eb0cf671 | 569 | if (close (fd) == -1) |
1d879de2 | 570 | goto bail25; |
fff5a5af PL |
571 | |
572 | close (fd_orig); | |
573 | fd_orig = -1; | |
24330d27 | 574 | |
134f6011 | 575 | if (!FcAtomicReplaceOrig (atomic)) |
1d879de2 | 576 | goto bail25; |
24330d27 | 577 | |
134f6011 KP |
578 | FcAtomicUnlock (atomic); |
579 | FcAtomicDestroy (atomic); | |
580 | ||
24330d27 KP |
581 | cache->updated = FcFalse; |
582 | return FcTrue; | |
583 | ||
1d879de2 PL |
584 | bail4: |
585 | free (header); | |
586 | bail3: | |
587 | if (fd_orig != -1) | |
588 | close (fd_orig); | |
589 | ||
590 | close (fd); | |
591 | bail25: | |
134f6011 | 592 | FcAtomicDeleteNew (atomic); |
1d879de2 | 593 | bail2: |
134f6011 | 594 | FcAtomicUnlock (atomic); |
1d879de2 | 595 | bail1: |
134f6011 | 596 | FcAtomicDestroy (atomic); |
24330d27 KP |
597 | return FcFalse; |
598 | } | |
599 | ||
212c9f43 | 600 | /* |
eb0cf671 PL |
601 | * Find the next presumably-mmapable offset after the supplied file |
602 | * position. | |
212c9f43 | 603 | */ |
4262e0b3 PL |
604 | static int |
605 | FcCacheNextOffset(off_t w) | |
179c3995 | 606 | { |
7fd7221e | 607 | static long pagesize = -1; |
c001a192 PL |
608 | |
609 | if (w == -1) | |
610 | return w; | |
611 | ||
7fd7221e | 612 | if (pagesize == -1) |
d6217cc6 | 613 | #if defined (HAVE_SYSCONF) |
7fd7221e | 614 | pagesize = sysconf(_SC_PAGESIZE); |
d6217cc6 PL |
615 | #else |
616 | pagesize = FC_HARDCODED_PAGESIZE; | |
617 | #endif | |
7fd7221e | 618 | if (w % pagesize == 0) |
212c9f43 PL |
619 | return w; |
620 | else | |
7fd7221e | 621 | return ((w / pagesize)+1)*pagesize; |
179c3995 KP |
622 | } |
623 | ||
212c9f43 PL |
624 | /* return the address of the segment for the provided arch, |
625 | * or -1 if arch not found */ | |
626 | static off_t | |
c60ec7cc | 627 | FcCacheSkipToArch (int fd, const char * arch) |
212c9f43 | 628 | { |
2dbe7597 PL |
629 | char candidate_arch_machine_name_count[MACHINE_SIGNATURE_SIZE + 9]; |
630 | char * candidate_arch; | |
212c9f43 PL |
631 | off_t current_arch_start = 0; |
632 | ||
ea44e218 | 633 | lseek (fd, 0, SEEK_SET); |
c60ec7cc | 634 | FcCacheSkipString (fd); |
ea44e218 PL |
635 | current_arch_start = lseek (fd, 0, SEEK_CUR); |
636 | ||
212c9f43 PL |
637 | /* skip arches that are not the current arch */ |
638 | while (1) | |
639 | { | |
640 | long bs; | |
641 | ||
8cb4c56d PL |
642 | if (lseek (fd, current_arch_start, SEEK_SET) != current_arch_start) |
643 | return -1; | |
644 | ||
eb0cf671 | 645 | if (FcCacheReadString (fd, candidate_arch_machine_name_count, |
2dbe7597 | 646 | sizeof (candidate_arch_machine_name_count)) == 0) |
5e678e94 | 647 | return -1; |
2dbe7597 PL |
648 | if (!strlen(candidate_arch_machine_name_count)) |
649 | return -1; | |
650 | bs = strtol(candidate_arch_machine_name_count, &candidate_arch, 16); | |
8cb4c56d | 651 | |
bb6b1993 | 652 | /* count = 0 should probably be distinguished from the !bs condition */ |
8cb4c56d PL |
653 | if (!bs || bs < strlen (candidate_arch_machine_name_count)) |
654 | return -1; | |
655 | ||
2dbe7597 | 656 | candidate_arch++; /* skip leading space */ |
212c9f43 | 657 | |
2dbe7597 | 658 | if (strcmp (candidate_arch, arch)==0) |
5e678e94 | 659 | return current_arch_start; |
212c9f43 | 660 | current_arch_start += bs; |
b17cf498 | 661 | current_arch_start = FcCacheNextOffset (current_arch_start); |
212c9f43 | 662 | } |
212c9f43 PL |
663 | } |
664 | ||
665 | /* Cuts out the segment at the file pointer (moves everything else | |
666 | * down to cover it), and leaves the file pointer at the end of the | |
667 | * file. */ | |
212c9f43 | 668 | static FcBool |
1d879de2 | 669 | FcCacheCopyOld (int fd, int fd_orig, off_t start) |
212c9f43 | 670 | { |
eb0cf671 | 671 | char * buf = malloc (8192); |
2dbe7597 | 672 | char candidate_arch_machine_name[MACHINE_SIGNATURE_SIZE + 9]; |
4262e0b3 | 673 | long bs; |
212c9f43 | 674 | int c, bytes_skipped; |
1d879de2 | 675 | off_t loc; |
212c9f43 PL |
676 | |
677 | if (!buf) | |
678 | return FcFalse; | |
679 | ||
1d879de2 PL |
680 | loc = 0; |
681 | lseek (fd, 0, SEEK_SET); lseek (fd_orig, 0, SEEK_SET); | |
719f4b84 | 682 | FcCacheSkipString (fd); FcCacheSkipString (fd_orig); |
1d879de2 PL |
683 | do |
684 | { | |
685 | int b = 8192; | |
686 | if (loc + b > start) | |
687 | b = start - loc; | |
688 | ||
689 | if ((c = read (fd_orig, buf, b)) <= 0) | |
690 | break; | |
691 | if (write (fd, buf, c) < 0) | |
692 | goto bail; | |
693 | ||
694 | loc += c; | |
695 | } | |
696 | while (c > 0); | |
697 | ||
212c9f43 | 698 | lseek (fd, start, SEEK_SET); |
eb0cf671 | 699 | if (FcCacheReadString (fd, candidate_arch_machine_name, |
212c9f43 PL |
700 | sizeof (candidate_arch_machine_name)) == 0) |
701 | goto done; | |
2dbe7597 | 702 | if (!strlen(candidate_arch_machine_name)) |
212c9f43 PL |
703 | goto done; |
704 | ||
2dbe7597 | 705 | bs = strtol(candidate_arch_machine_name, 0, 16); |
212c9f43 PL |
706 | if (bs == 0) |
707 | goto done; | |
708 | ||
709 | bytes_skipped = 0; | |
710 | do | |
711 | { | |
712 | lseek (fd, start+bs+bytes_skipped, SEEK_SET); | |
eb0cf671 | 713 | if ((c = read (fd, buf, 8192)) <= 0) |
212c9f43 PL |
714 | break; |
715 | lseek (fd, start+bytes_skipped, SEEK_SET); | |
716 | if (write (fd, buf, c) < 0) | |
717 | goto bail; | |
718 | bytes_skipped += c; | |
719 | } | |
720 | while (c > 0); | |
721 | lseek (fd, start+bytes_skipped, SEEK_SET); | |
722 | ||
723 | done: | |
724 | free (buf); | |
725 | return FcTrue; | |
726 | ||
727 | bail: | |
728 | free (buf); | |
729 | return FcFalse; | |
730 | } | |
731 | ||
55c8fa4f | 732 | /* Does not check that the cache has the appropriate arch section. */ |
1b7be377 | 733 | FcBool |
7410e40b | 734 | FcDirCacheValid (const FcChar8 *dir, FcConfig *config) |
1b7be377 | 735 | { |
ea44e218 | 736 | int fd; |
1b7be377 | 737 | |
7410e40b | 738 | fd = FcDirCacheOpen (config, dir, NULL); |
ea44e218 PL |
739 | |
740 | if (fd < 0) | |
c7490074 | 741 | return FcFalse; |
ea44e218 | 742 | close (fd); |
ea44e218 | 743 | |
55c8fa4f PL |
744 | return FcTrue; |
745 | } | |
746 | ||
747 | /* Assumes that the cache file in 'dir' exists. | |
748 | * Checks that the cache has the appropriate arch section. */ | |
749 | FcBool | |
7410e40b | 750 | FcDirCacheHasCurrentArch (const FcChar8 *dir, FcConfig *config) |
55c8fa4f | 751 | { |
55c8fa4f PL |
752 | int fd; |
753 | off_t current_arch_start; | |
754 | char *current_arch_machine_name; | |
8c0d6921 | 755 | FcCache metadata; |
a68ce952 | 756 | char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1]; |
55c8fa4f | 757 | |
7410e40b | 758 | fd = FcDirCacheOpen (config, dir, NULL); |
ea44e218 PL |
759 | if (fd < 0) |
760 | goto bail; | |
761 | ||
762 | current_arch_machine_name = FcCacheMachineSignature(); | |
c60ec7cc | 763 | current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name); |
8c0d6921 PL |
764 | |
765 | if (current_arch_start >= 0) | |
766 | { | |
a68ce952 PL |
767 | if (lseek (fd, current_arch_start, SEEK_SET) != current_arch_start) |
768 | goto bail1; | |
769 | ||
770 | FcCacheSkipString (fd); | |
771 | ||
772 | while (FcCacheReadString (fd, subdirName, sizeof (subdirName)) && strlen (subdirName) > 0) | |
773 | ; | |
774 | ||
8c0d6921 | 775 | if (read(fd, &metadata, sizeof(FcCache)) != sizeof(FcCache)) |
a68ce952 | 776 | goto bail1; |
8c0d6921 PL |
777 | |
778 | if (metadata.magic != FC_CACHE_MAGIC) | |
a68ce952 | 779 | goto bail1; |
8c0d6921 PL |
780 | } |
781 | ||
6bf23804 PL |
782 | close (fd); |
783 | ||
784 | if (current_arch_start < 0) | |
785 | return FcFalse; | |
55c8fa4f PL |
786 | |
787 | return FcTrue; | |
ea44e218 | 788 | |
a68ce952 PL |
789 | bail1: |
790 | close (fd); | |
ea44e218 | 791 | bail: |
ea44e218 | 792 | return FcFalse; |
55c8fa4f | 793 | } |
6bf23804 | 794 | |
cf65c055 | 795 | #define CACHEBASE_LEN (1 + 32 + 1 + sizeof (FC_ARCHITECTURE) + sizeof (FC_CACHE_SUFFIX)) |
7410e40b PL |
796 | |
797 | static const char bin2hex[] = { '0', '1', '2', '3', | |
798 | '4', '5', '6', '7', | |
799 | '8', '9', 'a', 'b', | |
800 | 'c', 'd', 'e', 'f' }; | |
801 | ||
802 | static FcChar8 * | |
803 | FcDirCacheBasename (const FcChar8 * dir, FcChar8 cache_base[CACHEBASE_LEN]) | |
55c8fa4f | 804 | { |
7410e40b PL |
805 | unsigned char hash[16]; |
806 | FcChar8 *hex_hash; | |
807 | int cnt; | |
808 | struct MD5Context ctx; | |
55c8fa4f | 809 | |
7410e40b PL |
810 | MD5Init (&ctx); |
811 | MD5Update (&ctx, (unsigned char *)dir, strlen ((char *) dir)); | |
3bfae75d | 812 | |
7410e40b PL |
813 | MD5Final (hash, &ctx); |
814 | ||
815 | cache_base[0] = '/'; | |
816 | hex_hash = cache_base + 1; | |
817 | for (cnt = 0; cnt < 16; ++cnt) | |
1178b569 | 818 | { |
7410e40b PL |
819 | hex_hash[2*cnt ] = bin2hex[hash[cnt] >> 4]; |
820 | hex_hash[2*cnt+1] = bin2hex[hash[cnt] & 0xf]; | |
821 | } | |
822 | hex_hash[2*cnt] = 0; | |
cf65c055 | 823 | strcat ((char *) cache_base, "-" FC_ARCHITECTURE FC_CACHE_SUFFIX); |
6f9fcb51 | 824 | |
7410e40b PL |
825 | return cache_base; |
826 | } | |
3bfae75d | 827 | |
7410e40b PL |
828 | FcBool |
829 | FcDirCacheUnlink (const FcChar8 *dir, FcConfig *config) | |
830 | { | |
831 | int fd = -1; | |
832 | FcChar8 *cache_hashed = NULL; | |
833 | FcChar8 cache_base[CACHEBASE_LEN]; | |
834 | FcStrList *list; | |
835 | FcChar8 *cache_dir; | |
836 | char dir_buf[FC_MAX_FILE_LEN]; | |
3bfae75d | 837 | |
7410e40b | 838 | FcDirCacheBasename (dir, cache_base); |
3bfae75d | 839 | |
7410e40b PL |
840 | list = FcStrListCreate (config->cacheDirs); |
841 | if (!list) | |
842 | return FcFalse; | |
843 | ||
844 | while ((cache_dir = FcStrListNext (list))) | |
3bfae75d | 845 | { |
7410e40b PL |
846 | cache_hashed = FcStrPlus (cache_dir, cache_base); |
847 | if (!cache_hashed) | |
848 | break; | |
849 | fd = open((char *) cache_hashed, O_RDONLY | O_BINARY); | |
850 | FcStrFree (cache_hashed); | |
851 | if (fd >= 0) | |
852 | { | |
853 | if (FcCacheReadString (fd, dir_buf, sizeof (dir_buf)) && | |
854 | strcmp (dir_buf, (char *) dir) == 0) | |
855 | { | |
856 | close (fd); | |
857 | if (unlink ((char *) cache_hashed) < 0) | |
858 | break; | |
859 | } else | |
860 | close (fd); | |
861 | } | |
1178b569 | 862 | } |
7410e40b PL |
863 | FcStrListDone (list); |
864 | /* return FcFalse if something went wrong */ | |
865 | if (cache_dir) | |
866 | return FcFalse; | |
1b7be377 PL |
867 | return FcTrue; |
868 | } | |
869 | ||
4262e0b3 | 870 | static int |
1b7be377 | 871 | FcCacheReadDirs (FcConfig * config, FcGlobalCache * cache, |
8b413bb6 | 872 | FcStrList *list, FcFontSet * set, FcStrSet *processed_dirs) |
4262e0b3 | 873 | { |
4262e0b3 PL |
874 | int ret = 0; |
875 | FcChar8 *dir; | |
4262e0b3 PL |
876 | FcStrSet *subdirs; |
877 | FcStrList *sublist; | |
fff5a5af | 878 | FcGlobalCacheDir *d; |
4262e0b3 PL |
879 | |
880 | /* | |
03a212e5 | 881 | * Read in the results from 'list'. |
4262e0b3 PL |
882 | */ |
883 | while ((dir = FcStrListNext (list))) | |
884 | { | |
9fad72ab PL |
885 | if (!FcConfigAcceptFilename (config, dir)) |
886 | continue; | |
887 | ||
fff5a5af PL |
888 | /* Skip this directory if already updated |
889 | * to avoid the looped directories via symlinks | |
5c3deb29 | 890 | * Clearly a dir not in fonts.conf shouldn't be globally cached. |
fff5a5af | 891 | */ |
5c3deb29 PL |
892 | |
893 | if (FcStrSetMember (processed_dirs, dir)) | |
894 | continue; | |
895 | if (!FcStrSetAdd (processed_dirs, dir)) | |
896 | continue; | |
4262e0b3 PL |
897 | |
898 | subdirs = FcStrSetCreate (); | |
899 | if (!subdirs) | |
900 | { | |
901 | fprintf (stderr, "Can't create directory set\n"); | |
902 | ret++; | |
4262e0b3 PL |
903 | continue; |
904 | } | |
905 | ||
d2f78684 | 906 | if (FcDirCacheRead (set, subdirs, dir, config)) |
fff5a5af PL |
907 | { |
908 | /* if an old entry is found in the global cache, disable it */ | |
5c3deb29 | 909 | if ((d = FcGlobalCacheDirFind (cache, (const char *)dir)) != NULL) |
fff5a5af PL |
910 | { |
911 | d->state = FcGCDirDisabled; | |
912 | /* save the updated config later without this entry */ | |
913 | cache->updated = FcTrue; | |
914 | } | |
915 | } | |
916 | else | |
4262e0b3 | 917 | { |
1b7be377 | 918 | if (FcDebug () & FC_DBG_FONTSET) |
03a212e5 | 919 | printf ("cache scan dir %s\n", dir); |
2304e38f | 920 | |
1b7be377 PL |
921 | FcDirScanConfig (set, subdirs, cache, |
922 | config->blanks, dir, FcFalse, config); | |
4262e0b3 PL |
923 | } |
924 | sublist = FcStrListCreate (subdirs); | |
925 | FcStrSetDestroy (subdirs); | |
926 | if (!sublist) | |
927 | { | |
928 | fprintf (stderr, "Can't create subdir list in \"%s\"\n", dir); | |
929 | ret++; | |
4262e0b3 PL |
930 | continue; |
931 | } | |
8b413bb6 | 932 | ret += FcCacheReadDirs (config, cache, sublist, set, processed_dirs); |
4262e0b3 PL |
933 | } |
934 | FcStrListDone (list); | |
935 | return ret; | |
936 | } | |
937 | ||
938 | FcFontSet * | |
1b7be377 | 939 | FcCacheRead (FcConfig *config, FcGlobalCache * cache) |
4262e0b3 | 940 | { |
8b413bb6 PL |
941 | FcFontSet *s = FcFontSetCreate(); |
942 | FcStrSet *processed_dirs; | |
943 | ||
4262e0b3 PL |
944 | if (!s) |
945 | return 0; | |
946 | ||
8b413bb6 PL |
947 | processed_dirs = FcStrSetCreate(); |
948 | if (!processed_dirs) | |
4262e0b3 PL |
949 | goto bail; |
950 | ||
8b413bb6 PL |
951 | if (FcCacheReadDirs (config, cache, FcConfigGetConfigDirs (config), s, processed_dirs)) |
952 | goto bail1; | |
953 | ||
954 | FcStrSetDestroy (processed_dirs); | |
4262e0b3 PL |
955 | return s; |
956 | ||
8b413bb6 PL |
957 | bail1: |
958 | FcStrSetDestroy (processed_dirs); | |
4262e0b3 PL |
959 | bail: |
960 | FcFontSetDestroy (s); | |
961 | return 0; | |
962 | } | |
963 | ||
7410e40b PL |
964 | /* Opens the cache file for 'dir' for reading. |
965 | * This searches the list of cache dirs for the relevant cache file, | |
966 | * returning the first one found. | |
967 | */ | |
ea44e218 | 968 | static int |
7410e40b | 969 | FcDirCacheOpen (FcConfig *config, const FcChar8 *dir, FcChar8 **cache_path) |
ea44e218 | 970 | { |
7410e40b PL |
971 | int fd = -1; |
972 | FcChar8 *cache_hashed = NULL; | |
973 | FcChar8 cache_base[CACHEBASE_LEN]; | |
974 | FcStrList *list; | |
975 | FcChar8 *cache_dir; | |
c1c3ba06 | 976 | char dir_buf[FC_MAX_FILE_LEN]; |
d2f78684 KP |
977 | struct stat file_stat, dir_stat; |
978 | ||
979 | if (stat ((char *) dir, &dir_stat) < 0) | |
980 | return -1; | |
df3efc11 | 981 | |
7410e40b | 982 | FcDirCacheBasename (dir, cache_base); |
ea44e218 | 983 | |
7410e40b PL |
984 | list = FcStrListCreate (config->cacheDirs); |
985 | if (!list) | |
986 | return -1; | |
987 | ||
988 | while ((cache_dir = FcStrListNext (list))) | |
ea44e218 | 989 | { |
7410e40b PL |
990 | cache_hashed = FcStrPlus (cache_dir, cache_base); |
991 | if (!cache_hashed) | |
d00c3cb5 | 992 | break; |
7410e40b | 993 | fd = open((char *) cache_hashed, O_RDONLY | O_BINARY); |
d2f78684 KP |
994 | if (fd >= 0) { |
995 | if (fstat (fd, &file_stat) >= 0 && | |
996 | dir_stat.st_mtime <= file_stat.st_mtime) | |
997 | { | |
998 | break; | |
999 | } | |
1000 | close (fd); | |
1001 | fd = -1; | |
1002 | } | |
7410e40b | 1003 | FcStrFree (cache_hashed); |
d2f78684 | 1004 | cache_hashed = NULL; |
7410e40b PL |
1005 | } |
1006 | FcStrListDone (list); | |
df3efc11 | 1007 | |
7410e40b PL |
1008 | if (fd < 0) |
1009 | return -1; | |
1010 | ||
1011 | if (!FcCacheReadString (fd, dir_buf, sizeof (dir_buf)) || | |
1012 | strcmp (dir_buf, (char *) dir) != 0) | |
1013 | { | |
1014 | close (fd); | |
1015 | FcStrFree (cache_hashed); | |
1016 | return -1; | |
1017 | } | |
1018 | ||
1019 | if (cache_path) | |
1020 | *cache_path = cache_hashed; | |
1021 | else | |
1022 | FcStrFree (cache_hashed); | |
ea44e218 | 1023 | |
d00c3cb5 | 1024 | return fd; |
ea44e218 PL |
1025 | } |
1026 | ||
212c9f43 | 1027 | /* read serialized state from the cache file */ |
2eb84374 | 1028 | FcBool |
cd9bca69 | 1029 | FcDirCacheRead (FcFontSet * set, FcStrSet * dirs, const FcChar8 *dir, FcConfig *config) |
212c9f43 | 1030 | { |
ea44e218 PL |
1031 | int fd; |
1032 | char *current_arch_machine_name; | |
1033 | char candidate_arch_machine_name[9+MACHINE_SIGNATURE_SIZE]; | |
1034 | off_t current_arch_start = 0; | |
1035 | char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1]; | |
212c9f43 | 1036 | |
7410e40b | 1037 | fd = FcDirCacheOpen (config, dir, NULL); |
ea44e218 PL |
1038 | if (fd < 0) |
1039 | goto bail; | |
212c9f43 | 1040 | |
ea44e218 PL |
1041 | current_arch_machine_name = FcCacheMachineSignature(); |
1042 | current_arch_start = FcCacheSkipToArch(fd, | |
c60ec7cc | 1043 | current_arch_machine_name); |
212c9f43 | 1044 | if (current_arch_start < 0) |
4262e0b3 | 1045 | goto bail1; |
212c9f43 PL |
1046 | |
1047 | lseek (fd, current_arch_start, SEEK_SET); | |
eb0cf671 | 1048 | if (FcCacheReadString (fd, candidate_arch_machine_name, |
212c9f43 | 1049 | sizeof (candidate_arch_machine_name)) == 0) |
4262e0b3 | 1050 | goto bail1; |
2304e38f | 1051 | |
c5411c4c | 1052 | while (FcCacheReadString (fd, subdirName, sizeof (subdirName)) && strlen (subdirName) > 0) |
8245771d | 1053 | FcStrSetAdd (dirs, (FcChar8 *)subdirName); |
2304e38f | 1054 | |
cd9bca69 | 1055 | if (!FcDirCacheConsume (fd, (const char *)dir, set, config)) |
eb0cf671 PL |
1056 | goto bail1; |
1057 | ||
1058 | close(fd); | |
eb0cf671 PL |
1059 | return FcTrue; |
1060 | ||
1061 | bail1: | |
2304e38f | 1062 | close (fd); |
eb0cf671 | 1063 | bail: |
eb0cf671 PL |
1064 | return FcFalse; |
1065 | } | |
1066 | ||
1067 | static FcBool | |
cd9bca69 | 1068 | FcDirCacheConsume (int fd, const char * dir, FcFontSet *set, FcConfig *config) |
eb0cf671 PL |
1069 | { |
1070 | FcCache metadata; | |
1071 | void * current_dir_block; | |
c001a192 | 1072 | off_t pos, endpos; |
212c9f43 | 1073 | |
68355f38 PL |
1074 | if (read(fd, &metadata, sizeof(FcCache)) != sizeof(FcCache)) |
1075 | return FcFalse; | |
212c9f43 | 1076 | if (metadata.magic != FC_CACHE_MAGIC) |
eb0cf671 | 1077 | return FcFalse; |
212c9f43 | 1078 | |
2dbe7597 | 1079 | if (!metadata.count) |
05a98eaf PL |
1080 | { |
1081 | pos = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR)); | |
1082 | lseek (fd, pos, SEEK_SET); | |
eadadf48 PL |
1083 | if (config) |
1084 | FcConfigAddFontDir (config, (FcChar8 *)dir); | |
eb0cf671 | 1085 | return FcTrue; |
05a98eaf | 1086 | } |
2dbe7597 | 1087 | |
fd77c154 | 1088 | pos = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR)); |
c001a192 PL |
1089 | |
1090 | /* This is not failsafe (multi-arches can break it), | |
1091 | * but fd has got to have at least as many bytes as | |
1092 | * metadata.count, or something's going to go horribly wrong. */ | |
1093 | if (pos == (off_t)-1) | |
1094 | return FcFalse; | |
1095 | ||
1096 | endpos = lseek (fd, 0, SEEK_END); | |
1097 | if (endpos == (off_t)-1 || endpos - pos < metadata.count) | |
1098 | return FcFalse; | |
1099 | if (lseek (fd, pos, SEEK_SET) == -1) | |
1100 | return FcFalse; | |
1101 | ||
d6217cc6 | 1102 | #if defined(HAVE_MMAP) || defined(__CYGWIN__) |
2dbe7597 PL |
1103 | current_dir_block = mmap (0, metadata.count, |
1104 | PROT_READ, MAP_SHARED, fd, pos); | |
1105 | if (current_dir_block == MAP_FAILED) | |
eb0cf671 | 1106 | return FcFalse; |
93f67dfc PL |
1107 | #elif defined(_WIN32) |
1108 | { | |
1109 | HANDLE hFileMap; | |
1110 | ||
1111 | hFileMap = CreateFileMapping((HANDLE) _get_osfhandle(fd), NULL, PAGE_READONLY, 0, 0, NULL); | |
1112 | if (hFileMap == NULL) | |
1113 | return FcFalse; | |
1114 | ||
1115 | current_dir_block = MapViewOfFile (hFileMap, FILE_MAP_READ, 0, 0, metadata.count + pos); | |
1116 | if (current_dir_block == NULL) | |
1117 | { | |
1118 | CloseHandle (hFileMap); | |
1119 | return FcFalse; | |
1120 | } | |
1121 | ||
1122 | current_dir_block = (void *)((char *)current_dir_block + pos); | |
1123 | } | |
d6217cc6 PL |
1124 | #else |
1125 | current_dir_block = malloc (metadata.count); | |
1126 | if (!current_dir_block) | |
1127 | return FcFalse; | |
1128 | ||
1129 | /* could also use CreateMappedViewOfFile under MinGW... */ | |
1130 | if (read (fd, current_dir_block, metadata.count) != metadata.count) | |
1131 | goto bail; | |
1132 | #endif | |
1133 | lseek (fd, pos+metadata.count, SEEK_SET); | |
eb0cf671 | 1134 | |
e77c1718 | 1135 | FcCacheAddBankDir (metadata.bank, dir); |
cd9bca69 PL |
1136 | if (config) |
1137 | FcConfigAddFontDir (config, (FcChar8 *)dir); | |
e77c1718 | 1138 | |
b8948e85 | 1139 | if (!FcFontSetUnserialize (&metadata, set, current_dir_block)) |
d6217cc6 | 1140 | goto bail; |
b8948e85 | 1141 | |
212c9f43 | 1142 | return FcTrue; |
d6217cc6 PL |
1143 | bail: |
1144 | #if !(defined(HAVE_MMAP) || defined(__CYGWIN__)) | |
1145 | free (current_dir_block); | |
1146 | #endif | |
1147 | return FcFalse; | |
eb0cf671 PL |
1148 | } |
1149 | ||
1150 | static void * | |
1151 | FcDirCacheProduce (FcFontSet *set, FcCache *metadata) | |
1152 | { | |
1153 | void * current_dir_block, * final_dir_block; | |
8245771d | 1154 | static unsigned int rand_state = 0; |
8e351527 | 1155 | int bank, needed_bytes_no_align; |
eb0cf671 | 1156 | |
d6217cc6 | 1157 | #if defined (HAVE_RAND_R) |
eb0cf671 PL |
1158 | if (!rand_state) |
1159 | rand_state = time(0L); | |
1160 | bank = rand_r(&rand_state); | |
1161 | ||
1162 | while (FcCacheHaveBank(bank)) | |
1163 | bank = rand_r(&rand_state); | |
d6217cc6 PL |
1164 | #else |
1165 | if (!rand_state) | |
1166 | { | |
1167 | rand_state = 1; | |
1168 | srand (time (0L)); | |
1169 | } | |
1170 | bank = rand(); | |
1171 | ||
1172 | while (FcCacheHaveBank(bank)) | |
1173 | bank = rand(); | |
1174 | #endif | |
eb0cf671 PL |
1175 | |
1176 | memset (metadata, 0, sizeof(FcCache)); | |
1177 | FcFontSetNewBank(); | |
8e351527 PL |
1178 | needed_bytes_no_align = FcFontSetNeededBytes (set); |
1179 | metadata->count = needed_bytes_no_align + | |
7fd7221e | 1180 | FcFontSetNeededBytesAlign (); |
eb0cf671 PL |
1181 | metadata->magic = FC_CACHE_MAGIC; |
1182 | metadata->bank = bank; | |
1183 | ||
8e351527 PL |
1184 | if (!needed_bytes_no_align) /* not a failure, no fonts to write */ |
1185 | { | |
1186 | /* no, you don't really need to write any bytes at all. */ | |
1187 | metadata->count = 0; | |
eb0cf671 | 1188 | return 0; |
8e351527 | 1189 | } |
eb0cf671 PL |
1190 | |
1191 | current_dir_block = malloc (metadata->count); | |
1192 | if (!current_dir_block) | |
1193 | goto bail; | |
bb6b1993 | 1194 | /* shut up valgrind */ |
8e351527 | 1195 | memset (current_dir_block, 0, metadata->count); |
eb0cf671 PL |
1196 | final_dir_block = FcFontSetDistributeBytes (metadata, current_dir_block); |
1197 | ||
8e351527 | 1198 | if ((void *)((char *)current_dir_block+metadata->count) < final_dir_block) |
eb0cf671 PL |
1199 | goto bail; |
1200 | ||
1201 | if (!FcFontSetSerialize (bank, set)) | |
1202 | goto bail; | |
1203 | ||
1204 | return current_dir_block; | |
212c9f43 | 1205 | |
4262e0b3 | 1206 | bail: |
eb0cf671 PL |
1207 | free (current_dir_block); |
1208 | return 0; | |
212c9f43 PL |
1209 | } |
1210 | ||
7410e40b PL |
1211 | static FcBool |
1212 | FcMakeDirectory (const FcChar8 *dir) | |
1213 | { | |
1214 | FcChar8 *parent; | |
1215 | FcBool ret; | |
1216 | ||
1217 | if (strlen ((char *) dir) == 0) | |
1218 | return FcFalse; | |
1219 | ||
1220 | parent = FcStrDirname (dir); | |
1221 | if (!parent) | |
1222 | return FcFalse; | |
1223 | if (access ((char *) parent, W_OK|X_OK) == 0) | |
1224 | ret = mkdir ((char *) dir, 0777) == 0; | |
1225 | else if (access ((char *) parent, F_OK) == -1) | |
1226 | ret = FcMakeDirectory (parent) && (mkdir ((char *) dir, 0777) == 0); | |
1227 | else | |
1228 | ret = FcFalse; | |
1229 | FcStrFree (parent); | |
1230 | return ret; | |
1231 | } | |
1232 | ||
212c9f43 PL |
1233 | /* write serialized state to the cache file */ |
1234 | FcBool | |
7410e40b | 1235 | FcDirCacheWrite (FcFontSet *set, FcStrSet *dirs, const FcChar8 *dir, FcConfig *config) |
212c9f43 | 1236 | { |
7410e40b PL |
1237 | FcChar8 cache_base[CACHEBASE_LEN]; |
1238 | FcChar8 *cache_hashed; | |
1d879de2 PL |
1239 | int fd, fd_orig, i, dirs_count; |
1240 | FcAtomic *atomic; | |
1241 | FcCache metadata; | |
1242 | off_t current_arch_start = 0, truncate_to; | |
7410e40b | 1243 | FcStrList *list; |
1d879de2 | 1244 | char *current_arch_machine_name, * header; |
ea44e218 | 1245 | void *current_dir_block = 0; |
d2f78684 KP |
1246 | FcChar8 *cache_dir = NULL; |
1247 | FcChar8 *test_dir; | |
212c9f43 | 1248 | |
7410e40b | 1249 | /* |
d2f78684 | 1250 | * Write it to the first directory in the list which is writable |
7410e40b | 1251 | */ |
d2f78684 KP |
1252 | |
1253 | list = FcStrListCreate (config->cacheDirs); | |
1254 | if (!list) | |
1255 | return FcFalse; | |
1256 | while ((test_dir = FcStrListNext (list))) { | |
1257 | if (access ((char *) test_dir, W_OK|X_OK) == 0) | |
1258 | { | |
1259 | cache_dir = test_dir; | |
1260 | break; | |
1261 | } | |
1262 | else | |
1263 | { | |
7410e40b PL |
1264 | /* |
1265 | * If the directory doesn't exist, try to create it | |
1266 | */ | |
d2f78684 KP |
1267 | if (access ((char *) test_dir, F_OK) == -1) { |
1268 | if (FcMakeDirectory (test_dir)) | |
1269 | { | |
1270 | cache_dir = test_dir; | |
7410e40b | 1271 | break; |
d2f78684 | 1272 | } |
7410e40b PL |
1273 | } |
1274 | } | |
7410e40b | 1275 | } |
d2f78684 KP |
1276 | FcStrListDone (list); |
1277 | if (!cache_dir) | |
1278 | return FcFalse; | |
1279 | FcDirCacheBasename (dir, cache_base); | |
1280 | cache_hashed = FcStrPlus (cache_dir, cache_base); | |
1281 | if (!cache_hashed) | |
1282 | return FcFalse; | |
ea44e218 | 1283 | |
eb0cf671 | 1284 | current_dir_block = FcDirCacheProduce (set, &metadata); |
212c9f43 | 1285 | |
a9698bed | 1286 | if (metadata.count && !current_dir_block) |
ea44e218 | 1287 | goto bail1; |
212c9f43 | 1288 | |
4262e0b3 | 1289 | if (FcDebug () & FC_DBG_CACHE) |
c1c3ba06 KP |
1290 | printf ("FcDirCacheWriteDir dir \"%s\" file \"%s\"\n", |
1291 | dir, cache_hashed); | |
4262e0b3 | 1292 | |
3bfae75d | 1293 | atomic = FcAtomicCreate ((FcChar8 *)cache_hashed); |
1d879de2 | 1294 | if (!atomic) |
ea44e218 | 1295 | goto bail1; |
212c9f43 | 1296 | |
1d879de2 | 1297 | if (!FcAtomicLock (atomic)) |
c1c3ba06 | 1298 | goto bail2; |
ec760b17 | 1299 | |
c1c3ba06 KP |
1300 | /* open the original file to save relevant portions */ |
1301 | fd_orig = open((char *)FcAtomicOrigFile (atomic), O_RDONLY | O_BINARY); | |
1d879de2 | 1302 | |
879af706 | 1303 | fd = open((char *)FcAtomicNewFile (atomic), O_RDWR | O_CREAT | O_BINARY, 0666); |
1d879de2 | 1304 | if (fd == -1) |
ec760b17 | 1305 | goto bail3; |
ea44e218 | 1306 | |
c1c3ba06 | 1307 | FcCacheWriteString (fd, (char *) dir); |
1d879de2 | 1308 | |
eb0cf671 | 1309 | current_arch_machine_name = FcCacheMachineSignature (); |
1d879de2 PL |
1310 | current_arch_start = 0; |
1311 | ||
1312 | if (fd_orig != -1) | |
1313 | current_arch_start = | |
c60ec7cc | 1314 | FcCacheSkipToArch(fd_orig, current_arch_machine_name); |
1d879de2 | 1315 | |
212c9f43 | 1316 | if (current_arch_start < 0) |
f468f568 | 1317 | { |
0d745819 PL |
1318 | off_t offset = lseek(fd_orig, 0, SEEK_END); |
1319 | current_arch_start = FcCacheNextOffset (offset); | |
f468f568 | 1320 | } |
212c9f43 | 1321 | |
1d879de2 | 1322 | if (fd_orig != -1 && !FcCacheCopyOld(fd, fd_orig, current_arch_start)) |
ea44e218 | 1323 | goto bail4; |
1d879de2 PL |
1324 | |
1325 | if (fd_orig != -1) | |
1326 | close (fd_orig); | |
212c9f43 PL |
1327 | |
1328 | current_arch_start = lseek(fd, 0, SEEK_CUR); | |
d6217cc6 | 1329 | #if defined (HAVE_FTRUNCATE) |
212c9f43 | 1330 | if (ftruncate (fd, current_arch_start) == -1) |
ea44e218 | 1331 | goto bail4; |
d6217cc6 PL |
1332 | #else |
1333 | #if defined (HAVE_CHSIZE) | |
1334 | if (chsize (fd, current_arch_start) == -1) | |
1335 | goto bail4; | |
1336 | #else | |
1337 | goto bail4; | |
1338 | #endif | |
1339 | #endif | |
212c9f43 | 1340 | |
6aee8c6f PL |
1341 | /* allocate space for subdir names in this block */ |
1342 | dirs_count = 0; | |
1343 | for (i = 0; i < dirs->size; i++) | |
1344 | dirs_count += strlen((char *)dirs->strs[i]) + 1; | |
1345 | dirs_count ++; | |
1346 | ||
212c9f43 | 1347 | /* now write the address of the next offset */ |
6aee8c6f | 1348 | truncate_to = FcCacheNextOffset (FcCacheNextOffset (current_arch_start + sizeof (FcCache) + dirs_count) + metadata.count) - current_arch_start; |
2dbe7597 | 1349 | header = malloc (10 + strlen (current_arch_machine_name)); |
eb0cf671 | 1350 | if (!header) |
ea44e218 | 1351 | goto bail4; |
2dbe7597 PL |
1352 | sprintf (header, "%8x ", (int)truncate_to); |
1353 | strcat (header, current_arch_machine_name); | |
eb0cf671 | 1354 | if (!FcCacheWriteString (fd, header)) |
ea44e218 | 1355 | goto bail5; |
212c9f43 | 1356 | |
2304e38f | 1357 | for (i = 0; i < dirs->size; i++) |
8245771d | 1358 | FcCacheWriteString (fd, (char *)dirs->strs[i]); |
2304e38f PL |
1359 | FcCacheWriteString (fd, ""); |
1360 | ||
fff5a5af PL |
1361 | if (write (fd, &metadata, sizeof(FcCache)) != sizeof(FcCache)) |
1362 | { | |
68355f38 PL |
1363 | perror("write metadata"); |
1364 | goto bail5; | |
1365 | } | |
a9698bed PL |
1366 | if (metadata.count) |
1367 | { | |
68355f38 PL |
1368 | off_t off = FcCacheNextOffset (lseek(fd, 0, SEEK_END)); |
1369 | if (lseek (fd, off, SEEK_SET) != off) | |
1370 | perror("lseek"); | |
1371 | else if (write (fd, current_dir_block, metadata.count) != | |
1372 | metadata.count) | |
1373 | perror("write current_dir_block"); | |
a9698bed | 1374 | free (current_dir_block); |
f2fb985c | 1375 | current_dir_block = 0; |
a9698bed | 1376 | } |
4262e0b3 | 1377 | |
2dbe7597 | 1378 | /* this actually serves to pad out the cache file, if needed */ |
d6217cc6 | 1379 | #if defined (HAVE_FTRUNCATE) |
212c9f43 | 1380 | if (ftruncate (fd, current_arch_start + truncate_to) == -1) |
ea44e218 | 1381 | goto bail5; |
d6217cc6 PL |
1382 | #else |
1383 | #if defined (HAVE_CHSIZE) | |
1384 | if (chsize (fd, current_arch_start + truncate_to) == -1) | |
1385 | goto bail5; | |
1386 | #else | |
1387 | goto bail5; | |
1388 | #endif | |
1389 | #endif | |
212c9f43 | 1390 | |
6f9fcb51 | 1391 | free (header); |
212c9f43 | 1392 | close(fd); |
1d879de2 | 1393 | if (!FcAtomicReplaceOrig(atomic)) |
ae2aafe6 | 1394 | goto bail3; |
3bfae75d | 1395 | FcStrFree ((FcChar8 *)cache_hashed); |
1d879de2 PL |
1396 | FcAtomicUnlock (atomic); |
1397 | FcAtomicDestroy (atomic); | |
212c9f43 PL |
1398 | return FcTrue; |
1399 | ||
ea44e218 | 1400 | bail5: |
0230c9f8 | 1401 | free (header); |
ea44e218 | 1402 | bail4: |
1d879de2 | 1403 | close (fd); |
ea44e218 | 1404 | bail3: |
1d879de2 | 1405 | FcAtomicUnlock (atomic); |
ea44e218 | 1406 | bail2: |
1d879de2 | 1407 | FcAtomicDestroy (atomic); |
ea44e218 | 1408 | bail1: |
3bfae75d | 1409 | FcStrFree ((FcChar8 *)cache_hashed); |
1d879de2 PL |
1410 | if (current_dir_block) |
1411 | free (current_dir_block); | |
212c9f43 PL |
1412 | return FcFalse; |
1413 | } | |
1414 | ||
2dbe7597 | 1415 | static char * |
eb0cf671 | 1416 | FcCacheMachineSignature () |
2dbe7597 PL |
1417 | { |
1418 | static char buf[MACHINE_SIGNATURE_SIZE]; | |
7fd7221e | 1419 | int32_t magic = ENDIAN_TEST; |
2dbe7597 PL |
1420 | char * m = (char *)&magic; |
1421 | ||
1422 | sprintf (buf, "%2x%2x%2x%2x " | |
1423 | "%4x %4x %4x %4x %4x %4x %4x %4x %4x %4x %4x %4x " | |
7fd7221e | 1424 | "%4x %4x %4x %4x %4x %4x %4x %4x\n", |
2dbe7597 | 1425 | m[0], m[1], m[2], m[3], |
cd310911 PL |
1426 | (unsigned int)sizeof (char), |
1427 | (unsigned int)sizeof (char *), | |
1428 | (unsigned int)sizeof (int), | |
1429 | (unsigned int)sizeof (FcPattern), | |
1430 | (unsigned int)sizeof (FcPatternEltPtr), | |
1431 | (unsigned int)sizeof (struct _FcPatternElt *), | |
1432 | (unsigned int)sizeof (FcPatternElt), | |
1433 | (unsigned int)sizeof (FcObjectPtr), | |
1434 | (unsigned int)sizeof (FcValueListPtr), | |
1435 | (unsigned int)sizeof (FcValue), | |
1436 | (unsigned int)sizeof (FcValueBinding), | |
1437 | (unsigned int)sizeof (struct _FcValueList *), | |
1438 | (unsigned int)sizeof (FcCharSet), | |
1439 | (unsigned int)sizeof (FcCharLeaf **), | |
1440 | (unsigned int)sizeof (FcChar16 *), | |
1441 | (unsigned int)sizeof (FcChar16), | |
1442 | (unsigned int)sizeof (FcCharLeaf), | |
1443 | (unsigned int)sizeof (FcChar32), | |
7fd7221e | 1444 | (unsigned int)sizeof (FcCache), |
d6217cc6 | 1445 | #if defined (HAVE_SYSCONF) |
7fd7221e | 1446 | (unsigned int)sysconf(_SC_PAGESIZE)); |
d6217cc6 PL |
1447 | #else |
1448 | (unsigned int)FC_HARDCODED_PAGESIZE); | |
1449 | #endif | |
2dbe7597 PL |
1450 | |
1451 | return buf; | |
1452 | } | |
1453 | ||
4262e0b3 | 1454 | static int banks_ptr = 0, banks_alloc = 0; |
b8948e85 | 1455 | int * _fcBankId = 0, * _fcBankIdx = 0; |
e77c1718 | 1456 | static const char ** bankDirs = 0; |
4262e0b3 | 1457 | |
eb0cf671 | 1458 | static FcBool |
4262e0b3 PL |
1459 | FcCacheHaveBank (int bank) |
1460 | { | |
1461 | int i; | |
1462 | ||
1463 | if (bank < FC_BANK_FIRST) | |
1464 | return FcTrue; | |
1465 | ||
1466 | for (i = 0; i < banks_ptr; i++) | |
b8948e85 | 1467 | if (_fcBankId[i] == bank) |
4262e0b3 PL |
1468 | return FcTrue; |
1469 | ||
1470 | return FcFalse; | |
1471 | } | |
1472 | ||
1473 | int | |
b8948e85 | 1474 | FcCacheBankToIndexMTF (int bank) |
4262e0b3 | 1475 | { |
751932dd | 1476 | int i, j; |
4262e0b3 PL |
1477 | |
1478 | for (i = 0; i < banks_ptr; i++) | |
b8948e85 | 1479 | if (_fcBankId[_fcBankIdx[i]] == bank) |
751932dd | 1480 | { |
b8948e85 | 1481 | int t = _fcBankIdx[i]; |
751932dd PL |
1482 | |
1483 | for (j = i; j > 0; j--) | |
b8948e85 PL |
1484 | _fcBankIdx[j] = _fcBankIdx[j-1]; |
1485 | _fcBankIdx[0] = t; | |
751932dd PL |
1486 | return t; |
1487 | } | |
4262e0b3 | 1488 | |
2dbe7597 | 1489 | if (banks_ptr >= banks_alloc) |
4262e0b3 | 1490 | { |
751932dd | 1491 | int * b, * bidx; |
e77c1718 PL |
1492 | const char ** bds; |
1493 | ||
b8948e85 | 1494 | b = realloc (_fcBankId, (banks_alloc + 4) * sizeof(int)); |
4262e0b3 PL |
1495 | if (!b) |
1496 | return -1; | |
b8948e85 | 1497 | _fcBankId = b; |
751932dd | 1498 | |
b8948e85 | 1499 | bidx = realloc (_fcBankIdx, (banks_alloc + 4) * sizeof(int)); |
751932dd PL |
1500 | if (!bidx) |
1501 | return -1; | |
b8948e85 | 1502 | _fcBankIdx = bidx; |
751932dd | 1503 | |
e77c1718 PL |
1504 | bds = realloc (bankDirs, (banks_alloc + 4) * sizeof (char *)); |
1505 | if (!bds) | |
1506 | return -1; | |
1507 | bankDirs = bds; | |
1508 | ||
4262e0b3 PL |
1509 | banks_alloc += 4; |
1510 | } | |
1511 | ||
1512 | i = banks_ptr++; | |
b8948e85 PL |
1513 | _fcBankId[i] = bank; |
1514 | _fcBankIdx[i] = i; | |
4262e0b3 PL |
1515 | return i; |
1516 | } | |
e77c1718 PL |
1517 | |
1518 | static void | |
1519 | FcCacheAddBankDir (int bank, const char * dir) | |
1520 | { | |
b8948e85 | 1521 | int bi = FcCacheBankToIndexMTF (bank); |
e77c1718 PL |
1522 | |
1523 | if (bi < 0) | |
1524 | return; | |
1525 | ||
1526 | bankDirs[bi] = (const char *)FcStrCopy ((FcChar8 *)dir); | |
1527 | } | |
1528 | ||
1529 | const char * | |
1530 | FcCacheFindBankDir (int bank) | |
1531 | { | |
1532 | int bi = FcCacheBankToIndex (bank); | |
1533 | return bankDirs[bi]; | |
1534 | } | |
1535 | ||
ea44e218 PL |
1536 | /* |
1537 | * This code implements the MD5 message-digest algorithm. | |
1538 | * The algorithm is due to Ron Rivest. This code was | |
1539 | * written by Colin Plumb in 1993, no copyright is claimed. | |
1540 | * This code is in the public domain; do with it what you wish. | |
1541 | * | |
1542 | * Equivalent code is available from RSA Data Security, Inc. | |
1543 | * This code has been tested against that, and is equivalent, | |
1544 | * except that you don't need to include two pages of legalese | |
1545 | * with every copy. | |
1546 | * | |
1547 | * To compute the message digest of a chunk of bytes, declare an | |
1548 | * MD5Context structure, pass it to MD5Init, call MD5Update as | |
1549 | * needed on buffers full of bytes, and then call MD5Final, which | |
1550 | * will fill a supplied 16-byte array with the digest. | |
1551 | */ | |
1552 | ||
1553 | #ifndef HIGHFIRST | |
1554 | #define byteReverse(buf, len) /* Nothing */ | |
1555 | #else | |
1556 | /* | |
1557 | * Note: this code is harmless on little-endian machines. | |
1558 | */ | |
1559 | void byteReverse(unsigned char *buf, unsigned longs) | |
1560 | { | |
1561 | FcChar32 t; | |
1562 | do { | |
1563 | t = (FcChar32) ((unsigned) buf[3] << 8 | buf[2]) << 16 | | |
1564 | ((unsigned) buf[1] << 8 | buf[0]); | |
1565 | *(FcChar32 *) buf = t; | |
1566 | buf += 4; | |
1567 | } while (--longs); | |
1568 | } | |
1569 | #endif | |
1570 | ||
1571 | /* | |
1572 | * Start MD5 accumulation. Set bit count to 0 and buffer to mysterious | |
1573 | * initialization constants. | |
1574 | */ | |
1575 | static void MD5Init(struct MD5Context *ctx) | |
1576 | { | |
1577 | ctx->buf[0] = 0x67452301; | |
1578 | ctx->buf[1] = 0xefcdab89; | |
1579 | ctx->buf[2] = 0x98badcfe; | |
1580 | ctx->buf[3] = 0x10325476; | |
1581 | ||
1582 | ctx->bits[0] = 0; | |
1583 | ctx->bits[1] = 0; | |
1584 | } | |
1585 | ||
1586 | /* | |
1587 | * Update context to reflect the concatenation of another buffer full | |
1588 | * of bytes. | |
1589 | */ | |
1590 | static void MD5Update(struct MD5Context *ctx, unsigned char *buf, unsigned len) | |
1591 | { | |
1592 | FcChar32 t; | |
1593 | ||
1594 | /* Update bitcount */ | |
1595 | ||
1596 | t = ctx->bits[0]; | |
1597 | if ((ctx->bits[0] = t + ((FcChar32) len << 3)) < t) | |
1598 | ctx->bits[1]++; /* Carry from low to high */ | |
1599 | ctx->bits[1] += len >> 29; | |
1600 | ||
1601 | t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data */ | |
1602 | ||
1603 | /* Handle any leading odd-sized chunks */ | |
1604 | ||
1605 | if (t) { | |
1606 | unsigned char *p = (unsigned char *) ctx->in + t; | |
1607 | ||
1608 | t = 64 - t; | |
1609 | if (len < t) { | |
1610 | memcpy(p, buf, len); | |
1611 | return; | |
1612 | } | |
1613 | memcpy(p, buf, t); | |
1614 | byteReverse(ctx->in, 16); | |
1615 | MD5Transform(ctx->buf, (FcChar32 *) ctx->in); | |
1616 | buf += t; | |
1617 | len -= t; | |
1618 | } | |
1619 | /* Process data in 64-byte chunks */ | |
1620 | ||
1621 | while (len >= 64) { | |
1622 | memcpy(ctx->in, buf, 64); | |
1623 | byteReverse(ctx->in, 16); | |
1624 | MD5Transform(ctx->buf, (FcChar32 *) ctx->in); | |
1625 | buf += 64; | |
1626 | len -= 64; | |
1627 | } | |
1628 | ||
1629 | /* Handle any remaining bytes of data. */ | |
1630 | ||
1631 | memcpy(ctx->in, buf, len); | |
1632 | } | |
1633 | ||
1634 | /* | |
1635 | * Final wrapup - pad to 64-byte boundary with the bit pattern | |
1636 | * 1 0* (64-bit count of bits processed, MSB-first) | |
1637 | */ | |
1638 | static void MD5Final(unsigned char digest[16], struct MD5Context *ctx) | |
1639 | { | |
1640 | unsigned count; | |
1641 | unsigned char *p; | |
1642 | ||
1643 | /* Compute number of bytes mod 64 */ | |
1644 | count = (ctx->bits[0] >> 3) & 0x3F; | |
1645 | ||
1646 | /* Set the first char of padding to 0x80. This is safe since there is | |
1647 | always at least one byte free */ | |
1648 | p = ctx->in + count; | |
1649 | *p++ = 0x80; | |
1650 | ||
1651 | /* Bytes of padding needed to make 64 bytes */ | |
1652 | count = 64 - 1 - count; | |
1653 | ||
1654 | /* Pad out to 56 mod 64 */ | |
1655 | if (count < 8) { | |
1656 | /* Two lots of padding: Pad the first block to 64 bytes */ | |
1657 | memset(p, 0, count); | |
1658 | byteReverse(ctx->in, 16); | |
1659 | MD5Transform(ctx->buf, (FcChar32 *) ctx->in); | |
1660 | ||
1661 | /* Now fill the next block with 56 bytes */ | |
1662 | memset(ctx->in, 0, 56); | |
1663 | } else { | |
1664 | /* Pad block to 56 bytes */ | |
1665 | memset(p, 0, count - 8); | |
1666 | } | |
1667 | byteReverse(ctx->in, 14); | |
1668 | ||
1669 | /* Append length in bits and transform */ | |
1670 | ((FcChar32 *) ctx->in)[14] = ctx->bits[0]; | |
1671 | ((FcChar32 *) ctx->in)[15] = ctx->bits[1]; | |
1672 | ||
1673 | MD5Transform(ctx->buf, (FcChar32 *) ctx->in); | |
1674 | byteReverse((unsigned char *) ctx->buf, 4); | |
1675 | memcpy(digest, ctx->buf, 16); | |
1676 | memset(ctx, 0, sizeof(ctx)); /* In case it's sensitive */ | |
1677 | } | |
1678 | ||
1679 | ||
1680 | /* The four core functions - F1 is optimized somewhat */ | |
1681 | ||
1682 | /* #define F1(x, y, z) (x & y | ~x & z) */ | |
1683 | #define F1(x, y, z) (z ^ (x & (y ^ z))) | |
1684 | #define F2(x, y, z) F1(z, x, y) | |
1685 | #define F3(x, y, z) (x ^ y ^ z) | |
1686 | #define F4(x, y, z) (y ^ (x | ~z)) | |
1687 | ||
1688 | /* This is the central step in the MD5 algorithm. */ | |
1689 | #define MD5STEP(f, w, x, y, z, data, s) \ | |
1690 | ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x ) | |
1691 | ||
1692 | /* | |
1693 | * The core of the MD5 algorithm, this alters an existing MD5 hash to | |
1694 | * reflect the addition of 16 longwords of new data. MD5Update blocks | |
1695 | * the data and converts bytes into longwords for this routine. | |
1696 | */ | |
1697 | static void MD5Transform(FcChar32 buf[4], FcChar32 in[16]) | |
1698 | { | |
1699 | register FcChar32 a, b, c, d; | |
1700 | ||
1701 | a = buf[0]; | |
1702 | b = buf[1]; | |
1703 | c = buf[2]; | |
1704 | d = buf[3]; | |
1705 | ||
1706 | MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7); | |
1707 | MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12); | |
1708 | MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17); | |
1709 | MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22); | |
1710 | MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7); | |
1711 | MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12); | |
1712 | MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17); | |
1713 | MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22); | |
1714 | MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7); | |
1715 | MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12); | |
1716 | MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17); | |
1717 | MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22); | |
1718 | MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7); | |
1719 | MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12); | |
1720 | MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17); | |
1721 | MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22); | |
1722 | ||
1723 | MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5); | |
1724 | MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9); | |
1725 | MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14); | |
1726 | MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20); | |
1727 | MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5); | |
1728 | MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9); | |
1729 | MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14); | |
1730 | MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20); | |
1731 | MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5); | |
1732 | MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9); | |
1733 | MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14); | |
1734 | MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20); | |
1735 | MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5); | |
1736 | MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9); | |
1737 | MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14); | |
1738 | MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20); | |
1739 | ||
1740 | MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4); | |
1741 | MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11); | |
1742 | MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16); | |
1743 | MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23); | |
1744 | MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4); | |
1745 | MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11); | |
1746 | MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16); | |
1747 | MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23); | |
1748 | MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4); | |
1749 | MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11); | |
1750 | MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16); | |
1751 | MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23); | |
1752 | MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4); | |
1753 | MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11); | |
1754 | MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16); | |
1755 | MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23); | |
1756 | ||
1757 | MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6); | |
1758 | MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10); | |
1759 | MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15); | |
1760 | MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21); | |
1761 | MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6); | |
1762 | MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10); | |
1763 | MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15); | |
1764 | MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21); | |
1765 | MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6); | |
1766 | MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10); | |
1767 | MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15); | |
1768 | MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21); | |
1769 | MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6); | |
1770 | MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10); | |
1771 | MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15); | |
1772 | MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21); | |
1773 | ||
1774 | buf[0] += a; | |
1775 | buf[1] += b; | |
1776 | buf[2] += c; | |
1777 | buf[3] += d; | |
1778 | } |