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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 PL |
39 | static int |
40 | FcDirCacheOpen (char * cache_file); | |
41 | ||
42 | static char * | |
43 | FcDirCacheHashName (char * cache_file, int collisions); | |
44 | ||
eb0cf671 | 45 | static off_t |
ea44e218 | 46 | FcCacheSkipToArch (int fd, const char * arch, FcBool global); |
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 | |
e77c1718 | 55 | FcDirCacheConsume (int fd, const char * dir, FcFontSet *set); |
1b7be377 | 56 | |
2eb84374 | 57 | FcBool |
2304e38f | 58 | FcDirCacheRead (FcFontSet * set, FcStrSet * dirs, const FcChar8 *dir); |
1b7be377 | 59 | |
eb0cf671 PL |
60 | static int |
61 | FcCacheNextOffset(off_t w); | |
1b7be377 | 62 | |
eb0cf671 PL |
63 | static char * |
64 | FcCacheMachineSignature (void); | |
1b7be377 PL |
65 | |
66 | static FcBool | |
eb0cf671 | 67 | FcCacheHaveBank (int bank); |
1b7be377 | 68 | |
e77c1718 PL |
69 | static void |
70 | FcCacheAddBankDir (int bank, const char * dir); | |
71 | ||
ea44e218 PL |
72 | struct MD5Context { |
73 | FcChar32 buf[4]; | |
74 | FcChar32 bits[2]; | |
75 | unsigned char in[64]; | |
76 | }; | |
77 | ||
78 | static void MD5Init(struct MD5Context *ctx); | |
79 | static void MD5Update(struct MD5Context *ctx, unsigned char *buf, unsigned len); | |
80 | static void MD5Final(unsigned char digest[16], struct MD5Context *ctx); | |
81 | static void MD5Transform(FcChar32 buf[4], FcChar32 in[16]); | |
82 | ||
eb0cf671 | 83 | #define FC_DBG_CACHE_REF 1024 |
1b7be377 | 84 | |
8245771d PL |
85 | static char * |
86 | FcCacheReadString (int fd, char *dest, int len) | |
24330d27 | 87 | { |
212c9f43 | 88 | FcChar8 c; |
ccb3e93b | 89 | FcBool escape; |
ccb3e93b KP |
90 | int size; |
91 | int i; | |
24330d27 | 92 | |
24330d27 | 93 | if (len == 0) |
03a212e5 | 94 | return 0; |
24330d27 | 95 | |
ccb3e93b KP |
96 | size = len; |
97 | i = 0; | |
24330d27 | 98 | escape = FcFalse; |
212c9f43 | 99 | while (read (fd, &c, 1) == 1) |
24330d27 KP |
100 | { |
101 | if (!escape) | |
102 | { | |
103 | switch (c) { | |
104 | case '"': | |
ccb3e93b KP |
105 | c = '\0'; |
106 | break; | |
24330d27 KP |
107 | case '\\': |
108 | escape = FcTrue; | |
109 | continue; | |
110 | } | |
111 | } | |
ccb3e93b KP |
112 | if (i == size) |
113 | { | |
212c9f43 PL |
114 | dest[i++] = 0; |
115 | return dest; | |
ccb3e93b | 116 | } |
212c9f43 | 117 | dest[i++] = c; |
ccb3e93b | 118 | if (c == '\0') |
212c9f43 | 119 | return dest; |
24330d27 KP |
120 | escape = FcFalse; |
121 | } | |
ccb3e93b | 122 | return 0; |
24330d27 KP |
123 | } |
124 | ||
ea44e218 PL |
125 | static void |
126 | FcCacheSkipString (int fd) | |
127 | { | |
128 | FcChar8 c; | |
129 | FcBool escape; | |
130 | ||
131 | escape = FcFalse; | |
132 | while (read (fd, &c, 1) == 1) | |
133 | { | |
134 | if (!escape) | |
135 | { | |
136 | switch (c) { | |
137 | case '"': | |
138 | c = '\0'; | |
139 | break; | |
140 | case '\\': | |
141 | escape = FcTrue; | |
142 | continue; | |
143 | } | |
144 | } | |
145 | if (c == '\0') | |
146 | return; | |
147 | escape = FcFalse; | |
148 | } | |
149 | return; | |
150 | } | |
151 | ||
24330d27 | 152 | static FcBool |
8245771d | 153 | FcCacheWriteString (int fd, const char *chars) |
327a7fd4 | 154 | { |
212c9f43 | 155 | if (write (fd, chars, strlen(chars)+1) != strlen(chars)+1) |
327a7fd4 | 156 | return FcFalse; |
327a7fd4 KP |
157 | return FcTrue; |
158 | } | |
159 | ||
eb0cf671 PL |
160 | static void |
161 | FcGlobalCacheDirDestroy (FcGlobalCacheDir *d) | |
1b7be377 | 162 | { |
5e678e94 PL |
163 | FcMemFree (FC_MEM_STRING, strlen (d->name)+1); |
164 | free (d->name); | |
165 | FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCacheDir)); | |
166 | free (d); | |
1b7be377 PL |
167 | } |
168 | ||
eb0cf671 PL |
169 | FcGlobalCache * |
170 | FcGlobalCacheCreate (void) | |
1b7be377 | 171 | { |
eb0cf671 | 172 | FcGlobalCache *cache; |
1b7be377 | 173 | |
eb0cf671 PL |
174 | cache = malloc (sizeof (FcGlobalCache)); |
175 | if (!cache) | |
176 | return 0; | |
177 | FcMemAlloc (FC_MEM_CACHE, sizeof (FcGlobalCache)); | |
178 | cache->dirs = 0; | |
179 | cache->updated = FcFalse; | |
180 | cache->fd = -1; | |
181 | return cache; | |
1b7be377 PL |
182 | } |
183 | ||
eb0cf671 PL |
184 | void |
185 | FcGlobalCacheDestroy (FcGlobalCache *cache) | |
327a7fd4 | 186 | { |
eb0cf671 | 187 | FcGlobalCacheDir *d, *next; |
327a7fd4 | 188 | |
eb0cf671 | 189 | for (d = cache->dirs; d; d = next) |
327a7fd4 | 190 | { |
eb0cf671 PL |
191 | next = d->next; |
192 | FcGlobalCacheDirDestroy (d); | |
327a7fd4 | 193 | } |
eb0cf671 PL |
194 | FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCache)); |
195 | free (cache); | |
327a7fd4 KP |
196 | } |
197 | ||
198 | void | |
eb0cf671 | 199 | FcGlobalCacheLoad (FcGlobalCache *cache, |
03a212e5 | 200 | FcStrSet *staleDirs, |
2b25f00c PL |
201 | const FcChar8 *cache_file, |
202 | FcConfig *config) | |
327a7fd4 | 203 | { |
ea44e218 | 204 | char name_buf[FC_MAX_FILE_LEN]; |
eb0cf671 | 205 | FcGlobalCacheDir *d, *next; |
2b25f00c | 206 | FcFileTime config_time = FcConfigModifiedTime (config); |
eb0cf671 PL |
207 | char * current_arch_machine_name; |
208 | char candidate_arch_machine_name[MACHINE_SIGNATURE_SIZE + 9]; | |
209 | off_t current_arch_start; | |
327a7fd4 | 210 | |
03a212e5 PL |
211 | struct stat cache_stat, dir_stat; |
212 | ||
213 | if (stat ((char *) cache_file, &cache_stat) < 0) | |
214 | return; | |
215 | ||
eb0cf671 PL |
216 | cache->fd = open ((char *) cache_file, O_RDONLY); |
217 | if (cache->fd == -1) | |
218 | return; | |
327a7fd4 | 219 | |
eb0cf671 | 220 | cache->updated = FcFalse; |
327a7fd4 | 221 | |
eb0cf671 PL |
222 | current_arch_machine_name = FcCacheMachineSignature (); |
223 | current_arch_start = FcCacheSkipToArch(cache->fd, | |
ea44e218 | 224 | current_arch_machine_name, FcTrue); |
eb0cf671 | 225 | if (current_arch_start < 0) |
e58b50e8 | 226 | goto bail_and_destroy; |
327a7fd4 | 227 | |
eb0cf671 | 228 | lseek (cache->fd, current_arch_start, SEEK_SET); |
03a212e5 PL |
229 | FcCacheReadString (cache->fd, candidate_arch_machine_name, |
230 | sizeof (candidate_arch_machine_name)); | |
231 | if (strlen(candidate_arch_machine_name) == 0) | |
e58b50e8 | 232 | goto bail_and_destroy; |
1b7be377 | 233 | |
eb0cf671 | 234 | while (1) |
1b7be377 | 235 | { |
8cb4c56d PL |
236 | off_t targ; |
237 | ||
eb0cf671 PL |
238 | FcCacheReadString (cache->fd, name_buf, sizeof (name_buf)); |
239 | if (!strlen(name_buf)) | |
1b7be377 | 240 | break; |
1b7be377 | 241 | |
9090cb9e PL |
242 | /* Directory must be older than the global cache file; also |
243 | cache must be newer than the config file. */ | |
03a212e5 | 244 | if (stat ((char *) name_buf, &dir_stat) < 0 || |
2b25f00c | 245 | dir_stat.st_mtime > cache_stat.st_mtime || |
9090cb9e | 246 | (config_time.set && cache_stat.st_mtime < config_time.time)) |
03a212e5 PL |
247 | { |
248 | FcCache md; | |
249 | ||
8245771d | 250 | FcStrSetAdd (staleDirs, FcStrCopy ((FcChar8 *)name_buf)); |
03a212e5 PL |
251 | read (cache->fd, &md, sizeof (FcCache)); |
252 | lseek (cache->fd, FcCacheNextOffset (lseek(cache->fd, 0, SEEK_CUR)) + md.count, SEEK_SET); | |
253 | continue; | |
254 | } | |
255 | ||
eb0cf671 PL |
256 | d = malloc (sizeof (FcGlobalCacheDir)); |
257 | if (!d) | |
258 | goto bail1; | |
1b7be377 | 259 | |
eb0cf671 PL |
260 | d->next = cache->dirs; |
261 | cache->dirs = d; | |
1b7be377 | 262 | |
8245771d | 263 | d->name = (char *)FcStrCopy ((FcChar8 *)name_buf); |
eb0cf671 PL |
264 | d->ent = 0; |
265 | d->offset = lseek (cache->fd, 0, SEEK_CUR); | |
8cb4c56d PL |
266 | if (read (cache->fd, &d->metadata, sizeof (FcCache)) != sizeof (FcCache)) |
267 | goto bail1; | |
268 | targ = FcCacheNextOffset (lseek(cache->fd, 0, SEEK_CUR)) + d->metadata.count; | |
269 | if (lseek (cache->fd, targ, SEEK_SET) != targ) | |
270 | goto bail1; | |
1b7be377 | 271 | } |
eb0cf671 | 272 | return; |
1b7be377 | 273 | |
eb0cf671 PL |
274 | bail1: |
275 | for (d = cache->dirs; d; d = next) | |
1b7be377 | 276 | { |
eb0cf671 PL |
277 | next = d->next; |
278 | free (d); | |
1b7be377 | 279 | } |
eb0cf671 | 280 | cache->dirs = 0; |
e58b50e8 PL |
281 | |
282 | close (cache->fd); | |
283 | cache->fd = -1; | |
284 | return; | |
285 | ||
286 | bail_and_destroy: | |
eb0cf671 PL |
287 | close (cache->fd); |
288 | cache->fd = -1; | |
e58b50e8 PL |
289 | |
290 | if (stat ((char *) cache_file, &cache_stat) == 0) | |
291 | unlink ((char *)cache_file); | |
292 | ||
eb0cf671 | 293 | return; |
e58b50e8 | 294 | |
1b7be377 PL |
295 | } |
296 | ||
1b7be377 | 297 | FcBool |
8245771d | 298 | FcGlobalCacheReadDir (FcFontSet *set, FcStrSet *dirs, FcGlobalCache * cache, const char *dir, FcConfig *config) |
1b7be377 | 299 | { |
eb0cf671 | 300 | FcGlobalCacheDir *d; |
03a212e5 | 301 | FcBool ret = FcFalse; |
1b7be377 | 302 | |
eb0cf671 | 303 | if (cache->fd == -1) |
1b7be377 | 304 | return FcFalse; |
1b7be377 | 305 | |
eb0cf671 | 306 | for (d = cache->dirs; d; d = d->next) |
1b7be377 | 307 | { |
03a212e5 | 308 | if (strncmp (d->name, dir, strlen(dir)) == 0) |
1b7be377 | 309 | { |
eb0cf671 | 310 | lseek (cache->fd, d->offset, SEEK_SET); |
e77c1718 | 311 | if (!FcDirCacheConsume (cache->fd, dir, set)) |
eb0cf671 | 312 | return FcFalse; |
03a212e5 PL |
313 | if (strcmp (d->name, dir) == 0) |
314 | ret = FcTrue; | |
1b7be377 | 315 | } |
1b7be377 | 316 | } |
1b7be377 | 317 | |
03a212e5 | 318 | return ret; |
1b7be377 PL |
319 | } |
320 | ||
eb0cf671 PL |
321 | FcBool |
322 | FcGlobalCacheUpdate (FcGlobalCache *cache, | |
8245771d | 323 | const char *name, |
eb0cf671 | 324 | FcFontSet *set) |
1b7be377 | 325 | { |
eb0cf671 | 326 | FcGlobalCacheDir * d; |
1b7be377 | 327 | |
eb0cf671 PL |
328 | if (!set->nfont) |
329 | return FcTrue; | |
1b7be377 | 330 | |
eb0cf671 | 331 | for (d = cache->dirs; d; d = d->next) |
1b7be377 | 332 | { |
eb0cf671 | 333 | if (strcmp(d->name, name) == 0) |
1b7be377 | 334 | break; |
24330d27 | 335 | } |
24330d27 | 336 | |
eb0cf671 | 337 | if (!d) |
24330d27 | 338 | { |
eb0cf671 PL |
339 | d = malloc (sizeof (FcGlobalCacheDir)); |
340 | if (!d) | |
341 | return FcFalse; | |
342 | d->next = cache->dirs; | |
343 | cache->dirs = d; | |
24330d27 | 344 | } |
24330d27 | 345 | |
eb0cf671 | 346 | cache->updated = FcTrue; |
24330d27 | 347 | |
8245771d | 348 | d->name = (char *)FcStrCopy ((FcChar8 *)name); |
eb0cf671 PL |
349 | d->ent = FcDirCacheProduce (set, &d->metadata); |
350 | d->offset = 0; | |
351 | return FcTrue; | |
24330d27 KP |
352 | } |
353 | ||
354 | FcBool | |
327a7fd4 KP |
355 | FcGlobalCacheSave (FcGlobalCache *cache, |
356 | const FcChar8 *cache_file) | |
24330d27 | 357 | { |
1d879de2 | 358 | int fd, fd_orig; |
327a7fd4 | 359 | FcGlobalCacheDir *dir; |
327a7fd4 | 360 | FcAtomic *atomic; |
eb0cf671 PL |
361 | off_t current_arch_start = 0, truncate_to; |
362 | char * current_arch_machine_name, * header; | |
24330d27 | 363 | |
eb0cf671 | 364 | if (!cache->updated) |
24330d27 KP |
365 | return FcTrue; |
366 | ||
daeed6e0 | 367 | #if defined (HAVE_GETUID) && defined (HAVE_GETEUID) |
a391da8f KP |
368 | /* Set-UID programs can't safely update the cache */ |
369 | if (getuid () != geteuid ()) | |
370 | return FcFalse; | |
daeed6e0 | 371 | #endif |
a391da8f | 372 | |
134f6011 KP |
373 | atomic = FcAtomicCreate (cache_file); |
374 | if (!atomic) | |
1d879de2 PL |
375 | return FcFalse; |
376 | ||
134f6011 | 377 | if (!FcAtomicLock (atomic)) |
24330d27 | 378 | goto bail1; |
eb0cf671 PL |
379 | fd = open ((char *) FcAtomicNewFile(atomic), O_RDWR | O_CREAT, |
380 | S_IRUSR | S_IWUSR); | |
381 | if (fd == -1) | |
24330d27 KP |
382 | goto bail2; |
383 | ||
1d879de2 PL |
384 | fd_orig = open ((char *) FcAtomicOrigFile(atomic), O_RDONLY); |
385 | ||
eb0cf671 | 386 | current_arch_machine_name = FcCacheMachineSignature (); |
1d879de2 PL |
387 | if (fd_orig == -1) |
388 | current_arch_start = 0; | |
389 | else | |
390 | current_arch_start = FcCacheSkipToArch (fd_orig, | |
ea44e218 PL |
391 | current_arch_machine_name, |
392 | FcTrue); | |
1d879de2 | 393 | |
eb0cf671 | 394 | if (current_arch_start < 0) |
649cc361 | 395 | current_arch_start = FcCacheNextOffset (lseek(fd_orig, 0, SEEK_END)); |
eb0cf671 | 396 | |
1d879de2 PL |
397 | if (!FcCacheCopyOld(fd, fd_orig, current_arch_start)) |
398 | goto bail3; | |
399 | ||
400 | close (fd_orig); | |
401 | fd_orig = -1; | |
eb0cf671 PL |
402 | |
403 | current_arch_start = lseek(fd, 0, SEEK_CUR); | |
404 | if (ftruncate (fd, current_arch_start) == -1) | |
1d879de2 | 405 | goto bail3; |
eb0cf671 | 406 | |
03a212e5 PL |
407 | header = malloc (10 + strlen (current_arch_machine_name)); |
408 | if (!header) | |
1d879de2 | 409 | goto bail3; |
03a212e5 | 410 | |
8cb4c56d | 411 | truncate_to = current_arch_start + strlen(current_arch_machine_name) + 11; |
eb0cf671 | 412 | for (dir = cache->dirs; dir; dir = dir->next) |
24330d27 | 413 | { |
eb0cf671 PL |
414 | truncate_to += strlen(dir->name) + 1; |
415 | truncate_to += sizeof (FcCache); | |
1c5b6345 | 416 | truncate_to = FcCacheNextOffset (truncate_to); |
eb0cf671 PL |
417 | truncate_to += dir->metadata.count; |
418 | } | |
419 | truncate_to -= current_arch_start; | |
eb0cf671 | 420 | |
8cb4c56d PL |
421 | sprintf (header, "%8x ", (int)truncate_to); |
422 | strcat (header, current_arch_machine_name); | |
423 | if (!FcCacheWriteString (fd, header)) | |
1d879de2 | 424 | goto bail4; |
8cb4c56d | 425 | |
eb0cf671 PL |
426 | for (dir = cache->dirs; dir; dir = dir->next) |
427 | { | |
5e678e94 PL |
428 | if (dir->ent) |
429 | { | |
430 | FcCacheWriteString (fd, dir->name); | |
431 | write (fd, &dir->metadata, sizeof(FcCache)); | |
f6ee3db5 | 432 | lseek (fd, FcCacheNextOffset (lseek(fd, 0, SEEK_CUR)), SEEK_SET); |
5e678e94 PL |
433 | write (fd, dir->ent, dir->metadata.count); |
434 | free (dir->ent); | |
435 | } | |
24330d27 | 436 | } |
eb0cf671 | 437 | FcCacheWriteString (fd, ""); |
24330d27 | 438 | |
eb0cf671 | 439 | if (close (fd) == -1) |
1d879de2 | 440 | goto bail25; |
24330d27 | 441 | |
134f6011 | 442 | if (!FcAtomicReplaceOrig (atomic)) |
1d879de2 | 443 | goto bail25; |
24330d27 | 444 | |
134f6011 KP |
445 | FcAtomicUnlock (atomic); |
446 | FcAtomicDestroy (atomic); | |
447 | ||
24330d27 KP |
448 | cache->updated = FcFalse; |
449 | return FcTrue; | |
450 | ||
1d879de2 PL |
451 | bail4: |
452 | free (header); | |
453 | bail3: | |
454 | if (fd_orig != -1) | |
455 | close (fd_orig); | |
456 | ||
457 | close (fd); | |
458 | bail25: | |
134f6011 | 459 | FcAtomicDeleteNew (atomic); |
1d879de2 | 460 | bail2: |
134f6011 | 461 | FcAtomicUnlock (atomic); |
1d879de2 | 462 | bail1: |
134f6011 | 463 | FcAtomicDestroy (atomic); |
24330d27 KP |
464 | return FcFalse; |
465 | } | |
466 | ||
212c9f43 | 467 | /* |
eb0cf671 PL |
468 | * Find the next presumably-mmapable offset after the supplied file |
469 | * position. | |
212c9f43 | 470 | */ |
4262e0b3 PL |
471 | static int |
472 | FcCacheNextOffset(off_t w) | |
179c3995 | 473 | { |
7fd7221e PL |
474 | static long pagesize = -1; |
475 | if (pagesize == -1) | |
476 | pagesize = sysconf(_SC_PAGESIZE); | |
477 | if (w % pagesize == 0) | |
212c9f43 PL |
478 | return w; |
479 | else | |
7fd7221e | 480 | return ((w / pagesize)+1)*pagesize; |
179c3995 KP |
481 | } |
482 | ||
212c9f43 PL |
483 | /* return the address of the segment for the provided arch, |
484 | * or -1 if arch not found */ | |
485 | static off_t | |
ea44e218 | 486 | FcCacheSkipToArch (int fd, const char * arch, FcBool global) |
212c9f43 | 487 | { |
2dbe7597 PL |
488 | char candidate_arch_machine_name_count[MACHINE_SIGNATURE_SIZE + 9]; |
489 | char * candidate_arch; | |
212c9f43 PL |
490 | off_t current_arch_start = 0; |
491 | ||
ea44e218 PL |
492 | lseek (fd, 0, SEEK_SET); |
493 | if (!global) | |
494 | FcCacheSkipString (fd); | |
495 | current_arch_start = lseek (fd, 0, SEEK_CUR); | |
496 | ||
212c9f43 PL |
497 | /* skip arches that are not the current arch */ |
498 | while (1) | |
499 | { | |
500 | long bs; | |
501 | ||
8cb4c56d PL |
502 | if (lseek (fd, current_arch_start, SEEK_SET) != current_arch_start) |
503 | return -1; | |
504 | ||
eb0cf671 | 505 | if (FcCacheReadString (fd, candidate_arch_machine_name_count, |
2dbe7597 | 506 | sizeof (candidate_arch_machine_name_count)) == 0) |
5e678e94 | 507 | return -1; |
2dbe7597 PL |
508 | if (!strlen(candidate_arch_machine_name_count)) |
509 | return -1; | |
510 | bs = strtol(candidate_arch_machine_name_count, &candidate_arch, 16); | |
8cb4c56d | 511 | |
13cdf607 | 512 | // count = 0 should probably be distinguished from the !bs condition |
8cb4c56d PL |
513 | if (!bs || bs < strlen (candidate_arch_machine_name_count)) |
514 | return -1; | |
515 | ||
2dbe7597 | 516 | candidate_arch++; /* skip leading space */ |
212c9f43 | 517 | |
2dbe7597 | 518 | if (strcmp (candidate_arch, arch)==0) |
5e678e94 | 519 | return current_arch_start; |
212c9f43 PL |
520 | current_arch_start += bs; |
521 | } | |
522 | ||
5e678e94 | 523 | return -1; |
212c9f43 PL |
524 | } |
525 | ||
526 | /* Cuts out the segment at the file pointer (moves everything else | |
527 | * down to cover it), and leaves the file pointer at the end of the | |
528 | * file. */ | |
212c9f43 | 529 | static FcBool |
1d879de2 | 530 | FcCacheCopyOld (int fd, int fd_orig, off_t start) |
212c9f43 | 531 | { |
eb0cf671 | 532 | char * buf = malloc (8192); |
2dbe7597 | 533 | char candidate_arch_machine_name[MACHINE_SIGNATURE_SIZE + 9]; |
4262e0b3 | 534 | long bs; |
212c9f43 | 535 | int c, bytes_skipped; |
1d879de2 | 536 | off_t loc; |
212c9f43 PL |
537 | |
538 | if (!buf) | |
539 | return FcFalse; | |
540 | ||
1d879de2 PL |
541 | loc = 0; |
542 | lseek (fd, 0, SEEK_SET); lseek (fd_orig, 0, SEEK_SET); | |
543 | do | |
544 | { | |
545 | int b = 8192; | |
546 | if (loc + b > start) | |
547 | b = start - loc; | |
548 | ||
549 | if ((c = read (fd_orig, buf, b)) <= 0) | |
550 | break; | |
551 | if (write (fd, buf, c) < 0) | |
552 | goto bail; | |
553 | ||
554 | loc += c; | |
555 | } | |
556 | while (c > 0); | |
557 | ||
212c9f43 | 558 | lseek (fd, start, SEEK_SET); |
eb0cf671 | 559 | if (FcCacheReadString (fd, candidate_arch_machine_name, |
212c9f43 PL |
560 | sizeof (candidate_arch_machine_name)) == 0) |
561 | goto done; | |
2dbe7597 | 562 | if (!strlen(candidate_arch_machine_name)) |
212c9f43 PL |
563 | goto done; |
564 | ||
2dbe7597 | 565 | bs = strtol(candidate_arch_machine_name, 0, 16); |
212c9f43 PL |
566 | if (bs == 0) |
567 | goto done; | |
568 | ||
569 | bytes_skipped = 0; | |
570 | do | |
571 | { | |
572 | lseek (fd, start+bs+bytes_skipped, SEEK_SET); | |
eb0cf671 | 573 | if ((c = read (fd, buf, 8192)) <= 0) |
212c9f43 PL |
574 | break; |
575 | lseek (fd, start+bytes_skipped, SEEK_SET); | |
576 | if (write (fd, buf, c) < 0) | |
577 | goto bail; | |
578 | bytes_skipped += c; | |
579 | } | |
580 | while (c > 0); | |
581 | lseek (fd, start+bytes_skipped, SEEK_SET); | |
582 | ||
583 | done: | |
584 | free (buf); | |
585 | return FcTrue; | |
586 | ||
587 | bail: | |
588 | free (buf); | |
589 | return FcFalse; | |
590 | } | |
591 | ||
55c8fa4f | 592 | /* Does not check that the cache has the appropriate arch section. */ |
1b7be377 PL |
593 | FcBool |
594 | FcDirCacheValid (const FcChar8 *dir) | |
595 | { | |
ea44e218 | 596 | FcChar8 *cache_file; |
1b7be377 | 597 | struct stat file_stat, dir_stat; |
ea44e218 | 598 | int fd; |
1b7be377 PL |
599 | |
600 | if (stat ((char *) dir, &dir_stat) < 0) | |
1b7be377 | 601 | return FcFalse; |
6bf23804 | 602 | |
ea44e218 PL |
603 | cache_file = FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE); |
604 | if (!cache_file) | |
605 | return FcFalse; | |
606 | ||
607 | fd = FcDirCacheOpen ((char *)cache_file); | |
608 | ||
609 | if (fd < 0) | |
610 | goto bail; | |
611 | if (fstat (fd, &file_stat) < 0) | |
612 | goto bail1; | |
613 | ||
614 | close (fd); | |
55c8fa4f | 615 | FcStrFree (cache_file); |
ea44e218 | 616 | |
55c8fa4f PL |
617 | /* |
618 | * If the directory has been modified more recently than | |
619 | * the cache file, the cache is not valid | |
620 | */ | |
2b25f00c | 621 | if (dir_stat.st_mtime > file_stat.st_mtime) |
55c8fa4f | 622 | return FcFalse; |
2b25f00c | 623 | |
55c8fa4f | 624 | return FcTrue; |
ea44e218 PL |
625 | |
626 | bail1: | |
627 | close (fd); | |
628 | bail: | |
629 | FcStrFree (cache_file); | |
630 | return FcFalse; | |
55c8fa4f PL |
631 | } |
632 | ||
633 | /* Assumes that the cache file in 'dir' exists. | |
634 | * Checks that the cache has the appropriate arch section. */ | |
635 | FcBool | |
636 | FcDirCacheHasCurrentArch (const FcChar8 *dir) | |
637 | { | |
ea44e218 | 638 | char *cache_file; |
55c8fa4f PL |
639 | int fd; |
640 | off_t current_arch_start; | |
641 | char *current_arch_machine_name; | |
642 | ||
ea44e218 PL |
643 | cache_file = (char *)FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE); |
644 | if (!cache_file) | |
645 | return FcFalse; | |
6bf23804 | 646 | |
ea44e218 PL |
647 | fd = FcDirCacheOpen (cache_file); |
648 | if (fd < 0) | |
649 | goto bail; | |
650 | ||
651 | current_arch_machine_name = FcCacheMachineSignature(); | |
652 | current_arch_start = FcCacheSkipToArch(fd, | |
653 | current_arch_machine_name, FcFalse); | |
6bf23804 PL |
654 | close (fd); |
655 | ||
656 | if (current_arch_start < 0) | |
657 | return FcFalse; | |
55c8fa4f PL |
658 | |
659 | return FcTrue; | |
ea44e218 PL |
660 | |
661 | bail: | |
662 | free (cache_file); | |
663 | return FcFalse; | |
55c8fa4f | 664 | } |
6bf23804 | 665 | |
55c8fa4f PL |
666 | FcBool |
667 | FcDirCacheUnlink (const FcChar8 *dir) | |
668 | { | |
669 | FcChar8 *cache_file = FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE); | |
15d7bd0a | 670 | struct stat cache_stat; |
55c8fa4f | 671 | |
15d7bd0a PL |
672 | if (stat ((char *) cache_file, &cache_stat) == 0 && |
673 | unlink ((char *)cache_file) != 0) | |
1178b569 PL |
674 | { |
675 | FcStrFree (cache_file); | |
1b7be377 | 676 | return FcFalse; |
1178b569 | 677 | } |
55c8fa4f PL |
678 | |
679 | FcStrFree (cache_file); | |
1b7be377 PL |
680 | return FcTrue; |
681 | } | |
682 | ||
4262e0b3 | 683 | static int |
1b7be377 PL |
684 | FcCacheReadDirs (FcConfig * config, FcGlobalCache * cache, |
685 | FcStrList *list, FcFontSet * set) | |
4262e0b3 | 686 | { |
4262e0b3 PL |
687 | int ret = 0; |
688 | FcChar8 *dir; | |
689 | FcChar8 *file, *base; | |
690 | FcStrSet *subdirs; | |
691 | FcStrList *sublist; | |
692 | struct stat statb; | |
693 | ||
694 | /* | |
03a212e5 | 695 | * Read in the results from 'list'. |
4262e0b3 PL |
696 | */ |
697 | while ((dir = FcStrListNext (list))) | |
698 | { | |
9fad72ab PL |
699 | if (!FcConfigAcceptFilename (config, dir)) |
700 | continue; | |
701 | ||
4262e0b3 PL |
702 | /* freed below */ |
703 | file = (FcChar8 *) malloc (strlen ((char *) dir) + 1 + FC_MAX_FILE_LEN + 1); | |
704 | if (!file) | |
705 | return FcFalse; | |
706 | ||
707 | strcpy ((char *) file, (char *) dir); | |
708 | strcat ((char *) file, "/"); | |
709 | base = file + strlen ((char *) file); | |
710 | ||
711 | subdirs = FcStrSetCreate (); | |
712 | if (!subdirs) | |
713 | { | |
714 | fprintf (stderr, "Can't create directory set\n"); | |
715 | ret++; | |
716 | free (file); | |
717 | continue; | |
718 | } | |
719 | ||
720 | if (access ((char *) dir, X_OK) < 0) | |
721 | { | |
722 | switch (errno) { | |
723 | case ENOENT: | |
724 | case ENOTDIR: | |
725 | case EACCES: | |
726 | break; | |
727 | default: | |
728 | fprintf (stderr, "\"%s\": ", dir); | |
729 | perror (""); | |
730 | ret++; | |
731 | } | |
732 | FcStrSetDestroy (subdirs); | |
733 | free (file); | |
734 | continue; | |
735 | } | |
736 | if (stat ((char *) dir, &statb) == -1) | |
737 | { | |
738 | fprintf (stderr, "\"%s\": ", dir); | |
739 | perror (""); | |
740 | FcStrSetDestroy (subdirs); | |
741 | ret++; | |
742 | free (file); | |
743 | continue; | |
744 | } | |
745 | if (!S_ISDIR (statb.st_mode)) | |
746 | { | |
747 | fprintf (stderr, "\"%s\": not a directory, skipping\n", dir); | |
748 | FcStrSetDestroy (subdirs); | |
749 | free (file); | |
750 | continue; | |
751 | } | |
2304e38f | 752 | if (!FcDirCacheValid (dir) || !FcDirCacheRead (set, subdirs, dir)) |
4262e0b3 | 753 | { |
1b7be377 | 754 | if (FcDebug () & FC_DBG_FONTSET) |
03a212e5 | 755 | printf ("cache scan dir %s\n", dir); |
2304e38f | 756 | |
1b7be377 PL |
757 | FcDirScanConfig (set, subdirs, cache, |
758 | config->blanks, dir, FcFalse, config); | |
4262e0b3 PL |
759 | } |
760 | sublist = FcStrListCreate (subdirs); | |
761 | FcStrSetDestroy (subdirs); | |
762 | if (!sublist) | |
763 | { | |
764 | fprintf (stderr, "Can't create subdir list in \"%s\"\n", dir); | |
765 | ret++; | |
766 | free (file); | |
767 | continue; | |
768 | } | |
1b7be377 | 769 | ret += FcCacheReadDirs (config, cache, sublist, set); |
4262e0b3 PL |
770 | free (file); |
771 | } | |
772 | FcStrListDone (list); | |
773 | return ret; | |
774 | } | |
775 | ||
776 | FcFontSet * | |
1b7be377 | 777 | FcCacheRead (FcConfig *config, FcGlobalCache * cache) |
4262e0b3 PL |
778 | { |
779 | FcFontSet * s = FcFontSetCreate(); | |
780 | if (!s) | |
781 | return 0; | |
782 | ||
1b7be377 | 783 | if (FcCacheReadDirs (config, cache, FcConfigGetConfigDirs (config), s)) |
4262e0b3 PL |
784 | goto bail; |
785 | ||
786 | return s; | |
787 | ||
788 | bail: | |
789 | FcFontSetDestroy (s); | |
790 | return 0; | |
791 | } | |
792 | ||
ea44e218 PL |
793 | static const char bin2hex[] = { '0', '1', '2', '3', |
794 | '4', '5', '6', '7', | |
795 | '8', '9', 'a', 'b', | |
796 | 'c', 'd', 'e', 'f' }; | |
797 | ||
798 | static char * | |
799 | FcDirCacheHashName (char * cache_file, int collisions) | |
800 | { | |
801 | unsigned char hash[16], hex_hash[33]; | |
802 | char *cache_hashed; | |
803 | unsigned char uscore = '_'; | |
804 | int cnt, i; | |
805 | FcChar8 *tmp; | |
806 | struct MD5Context ctx; | |
807 | ||
808 | MD5Init (&ctx); | |
809 | MD5Update (&ctx, (unsigned char *)cache_file, strlen (cache_file)); | |
810 | ||
811 | for (i = 0; i < collisions; i++) | |
812 | MD5Update (&ctx, &uscore, 1); | |
813 | ||
814 | MD5Final (hash, &ctx); | |
815 | ||
816 | for (cnt = 0; cnt < 16; ++cnt) | |
817 | { | |
818 | hex_hash[2*cnt] = bin2hex[hash[cnt] >> 4]; | |
819 | hex_hash[2*cnt+1] = bin2hex[hash[cnt] & 0xf]; | |
820 | } | |
821 | hex_hash[32] = 0; | |
822 | ||
823 | tmp = FcStrPlus ((FcChar8 *)hex_hash, (FcChar8 *)FC_CACHE_SUFFIX); | |
824 | if (!tmp) | |
825 | return 0; | |
826 | ||
827 | cache_hashed = (char *)FcStrPlus ((FcChar8 *)PKGCACHEDIR, tmp); | |
828 | free (tmp); | |
829 | ||
830 | return cache_hashed; | |
831 | } | |
832 | ||
833 | /* Opens the hashed name for cache_file. | |
834 | * This would fail in the unlikely event of a collision and subsequent | |
835 | * removal of the file which originally caused the collision. */ | |
836 | static int | |
837 | FcDirCacheOpen (char *cache_file) | |
838 | { | |
839 | int fd = -1, collisions = 0; | |
840 | char *cache_hashed; | |
841 | char name_buf[FC_MAX_FILE_LEN]; | |
842 | ||
843 | do | |
844 | { | |
845 | cache_hashed = FcDirCacheHashName (cache_file, collisions++); | |
846 | if (!cache_hashed) | |
847 | return -1; | |
848 | ||
849 | if (fd > 0) | |
850 | close (fd); | |
851 | fd = open(cache_hashed, O_RDONLY); | |
852 | if (fd == -1) | |
853 | return -1; | |
854 | FcCacheReadString (fd, name_buf, sizeof (name_buf)); | |
855 | if (!strlen(name_buf)) | |
856 | goto bail; | |
857 | } while (strcmp (name_buf, cache_file) != 0); | |
858 | return fd; | |
859 | ||
860 | bail: | |
861 | close (fd); | |
862 | return -1; | |
863 | } | |
864 | ||
212c9f43 | 865 | /* read serialized state from the cache file */ |
2eb84374 | 866 | FcBool |
2304e38f | 867 | FcDirCacheRead (FcFontSet * set, FcStrSet * dirs, const FcChar8 *dir) |
212c9f43 | 868 | { |
ea44e218 PL |
869 | char *cache_file; |
870 | int fd; | |
871 | char *current_arch_machine_name; | |
872 | char candidate_arch_machine_name[9+MACHINE_SIGNATURE_SIZE]; | |
873 | off_t current_arch_start = 0; | |
874 | char subdirName[FC_MAX_FILE_LEN + 1 + 12 + 1]; | |
212c9f43 | 875 | |
ea44e218 | 876 | cache_file = (char *)FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE); |
4262e0b3 | 877 | if (!cache_file) |
ea44e218 | 878 | return FcFalse; |
212c9f43 | 879 | |
ea44e218 PL |
880 | fd = FcDirCacheOpen (cache_file); |
881 | if (fd < 0) | |
882 | goto bail; | |
212c9f43 | 883 | |
ea44e218 PL |
884 | current_arch_machine_name = FcCacheMachineSignature(); |
885 | current_arch_start = FcCacheSkipToArch(fd, | |
886 | current_arch_machine_name, | |
887 | FcFalse); | |
212c9f43 | 888 | if (current_arch_start < 0) |
4262e0b3 | 889 | goto bail1; |
212c9f43 PL |
890 | |
891 | lseek (fd, current_arch_start, SEEK_SET); | |
eb0cf671 | 892 | if (FcCacheReadString (fd, candidate_arch_machine_name, |
212c9f43 | 893 | sizeof (candidate_arch_machine_name)) == 0) |
4262e0b3 | 894 | goto bail1; |
2304e38f PL |
895 | |
896 | while (strlen(FcCacheReadString (fd, subdirName, sizeof (subdirName))) > 0) | |
8245771d | 897 | FcStrSetAdd (dirs, (FcChar8 *)subdirName); |
2304e38f | 898 | |
e77c1718 | 899 | if (!FcDirCacheConsume (fd, (const char *)dir, set)) |
eb0cf671 PL |
900 | goto bail1; |
901 | ||
902 | close(fd); | |
903 | free (cache_file); | |
904 | return FcTrue; | |
905 | ||
906 | bail1: | |
2304e38f | 907 | close (fd); |
eb0cf671 PL |
908 | bail: |
909 | free (cache_file); | |
910 | return FcFalse; | |
911 | } | |
912 | ||
913 | static FcBool | |
e77c1718 | 914 | FcDirCacheConsume (int fd, const char * dir, FcFontSet *set) |
eb0cf671 PL |
915 | { |
916 | FcCache metadata; | |
917 | void * current_dir_block; | |
fd77c154 | 918 | off_t pos; |
212c9f43 | 919 | |
212c9f43 PL |
920 | read(fd, &metadata, sizeof(FcCache)); |
921 | if (metadata.magic != FC_CACHE_MAGIC) | |
eb0cf671 | 922 | return FcFalse; |
212c9f43 | 923 | |
2dbe7597 | 924 | if (!metadata.count) |
eb0cf671 | 925 | return FcTrue; |
2dbe7597 | 926 | |
fd77c154 | 927 | pos = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR)); |
2dbe7597 PL |
928 | current_dir_block = mmap (0, metadata.count, |
929 | PROT_READ, MAP_SHARED, fd, pos); | |
930 | if (current_dir_block == MAP_FAILED) | |
eb0cf671 | 931 | return FcFalse; |
eb0cf671 | 932 | |
e77c1718 PL |
933 | FcCacheAddBankDir (metadata.bank, dir); |
934 | ||
b8948e85 PL |
935 | if (!FcFontSetUnserialize (&metadata, set, current_dir_block)) |
936 | return FcFalse; | |
937 | ||
212c9f43 | 938 | return FcTrue; |
eb0cf671 PL |
939 | } |
940 | ||
941 | static void * | |
942 | FcDirCacheProduce (FcFontSet *set, FcCache *metadata) | |
943 | { | |
944 | void * current_dir_block, * final_dir_block; | |
8245771d | 945 | static unsigned int rand_state = 0; |
8e351527 | 946 | int bank, needed_bytes_no_align; |
eb0cf671 PL |
947 | |
948 | if (!rand_state) | |
949 | rand_state = time(0L); | |
950 | bank = rand_r(&rand_state); | |
951 | ||
952 | while (FcCacheHaveBank(bank)) | |
953 | bank = rand_r(&rand_state); | |
954 | ||
955 | memset (metadata, 0, sizeof(FcCache)); | |
956 | FcFontSetNewBank(); | |
8e351527 PL |
957 | needed_bytes_no_align = FcFontSetNeededBytes (set); |
958 | metadata->count = needed_bytes_no_align + | |
7fd7221e | 959 | FcFontSetNeededBytesAlign (); |
eb0cf671 PL |
960 | metadata->magic = FC_CACHE_MAGIC; |
961 | metadata->bank = bank; | |
962 | ||
8e351527 PL |
963 | if (!needed_bytes_no_align) /* not a failure, no fonts to write */ |
964 | { | |
965 | /* no, you don't really need to write any bytes at all. */ | |
966 | metadata->count = 0; | |
eb0cf671 | 967 | return 0; |
8e351527 | 968 | } |
eb0cf671 PL |
969 | |
970 | current_dir_block = malloc (metadata->count); | |
971 | if (!current_dir_block) | |
972 | goto bail; | |
8e351527 PL |
973 | // shut up valgrind |
974 | memset (current_dir_block, 0, metadata->count); | |
eb0cf671 PL |
975 | final_dir_block = FcFontSetDistributeBytes (metadata, current_dir_block); |
976 | ||
8e351527 | 977 | if ((void *)((char *)current_dir_block+metadata->count) < final_dir_block) |
eb0cf671 PL |
978 | goto bail; |
979 | ||
980 | if (!FcFontSetSerialize (bank, set)) | |
981 | goto bail; | |
982 | ||
983 | return current_dir_block; | |
212c9f43 | 984 | |
4262e0b3 | 985 | bail: |
eb0cf671 PL |
986 | free (current_dir_block); |
987 | return 0; | |
212c9f43 PL |
988 | } |
989 | ||
990 | /* write serialized state to the cache file */ | |
991 | FcBool | |
2304e38f | 992 | FcDirCacheWrite (FcFontSet *set, FcStrSet *dirs, const FcChar8 *dir) |
212c9f43 | 993 | { |
ea44e218 PL |
994 | char *cache_file; |
995 | char *cache_hashed; | |
1d879de2 PL |
996 | int fd, fd_orig, i, dirs_count; |
997 | FcAtomic *atomic; | |
998 | FcCache metadata; | |
999 | off_t current_arch_start = 0, truncate_to; | |
ea44e218 PL |
1000 | char name_buf[FC_MAX_FILE_LEN]; |
1001 | int collisions; | |
8245771d | 1002 | |
1d879de2 | 1003 | char *current_arch_machine_name, * header; |
ea44e218 | 1004 | void *current_dir_block = 0; |
212c9f43 | 1005 | |
ea44e218 | 1006 | cache_file = (char *)FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE); |
4262e0b3 PL |
1007 | if (!cache_file) |
1008 | goto bail; | |
1009 | ||
ea44e218 PL |
1010 | /* Ensure that we're not trampling a cache for some other dir. */ |
1011 | /* This is slightly different from FcDirCacheOpen, since it | |
1012 | * needs the filename, not the file descriptor. */ | |
1013 | fd = -1; collisions = 0; | |
1014 | do | |
1015 | { | |
1016 | cache_hashed = FcDirCacheHashName (cache_file, collisions++); | |
1017 | if (!cache_hashed) | |
1018 | goto bail0; | |
1019 | ||
1020 | if (fd > 0) | |
1021 | close (fd); | |
1022 | fd = open(cache_hashed, O_RDONLY); | |
1023 | if (fd == -1) | |
1024 | break; | |
1025 | FcCacheReadString (fd, name_buf, sizeof (name_buf)); | |
1026 | close (fd); | |
1027 | ||
1028 | if (!strlen(name_buf)) | |
1029 | break; | |
1030 | ||
1031 | if (strcmp (name_buf, cache_file) != 0) | |
1032 | continue; | |
1033 | } while (0); | |
1034 | ||
eb0cf671 | 1035 | current_dir_block = FcDirCacheProduce (set, &metadata); |
212c9f43 | 1036 | |
a9698bed | 1037 | if (metadata.count && !current_dir_block) |
ea44e218 | 1038 | goto bail1; |
212c9f43 | 1039 | |
4262e0b3 PL |
1040 | if (FcDebug () & FC_DBG_CACHE) |
1041 | printf ("FcDirCacheWriteDir cache_file \"%s\"\n", cache_file); | |
1042 | ||
ea44e218 | 1043 | atomic = FcAtomicCreate ((FcChar8 *)cache_hashed); |
1d879de2 | 1044 | if (!atomic) |
ea44e218 | 1045 | goto bail1; |
212c9f43 | 1046 | |
1d879de2 | 1047 | if (!FcAtomicLock (atomic)) |
ea44e218 | 1048 | goto bail2; |
1d879de2 PL |
1049 | |
1050 | fd_orig = open((char *)FcAtomicOrigFile (atomic), O_RDONLY, 0666); | |
1051 | ||
1052 | fd = open((char *)FcAtomicNewFile (atomic), O_RDWR | O_CREAT, 0666); | |
1053 | if (fd == -1) | |
ea44e218 PL |
1054 | goto bail3; |
1055 | ||
1056 | FcCacheWriteString (fd, cache_file); | |
1d879de2 | 1057 | |
eb0cf671 | 1058 | current_arch_machine_name = FcCacheMachineSignature (); |
1d879de2 PL |
1059 | current_arch_start = 0; |
1060 | ||
1061 | if (fd_orig != -1) | |
1062 | current_arch_start = | |
ea44e218 | 1063 | FcCacheSkipToArch(fd_orig, current_arch_machine_name, FcFalse); |
1d879de2 | 1064 | |
212c9f43 | 1065 | if (current_arch_start < 0) |
649cc361 | 1066 | current_arch_start = FcCacheNextOffset (lseek(fd_orig, 0, SEEK_END)); |
212c9f43 | 1067 | |
1d879de2 | 1068 | if (fd_orig != -1 && !FcCacheCopyOld(fd, fd_orig, current_arch_start)) |
ea44e218 | 1069 | goto bail4; |
1d879de2 PL |
1070 | |
1071 | if (fd_orig != -1) | |
1072 | close (fd_orig); | |
212c9f43 PL |
1073 | |
1074 | current_arch_start = lseek(fd, 0, SEEK_CUR); | |
1075 | if (ftruncate (fd, current_arch_start) == -1) | |
ea44e218 | 1076 | goto bail4; |
212c9f43 | 1077 | |
6aee8c6f PL |
1078 | /* allocate space for subdir names in this block */ |
1079 | dirs_count = 0; | |
1080 | for (i = 0; i < dirs->size; i++) | |
1081 | dirs_count += strlen((char *)dirs->strs[i]) + 1; | |
1082 | dirs_count ++; | |
1083 | ||
212c9f43 | 1084 | /* now write the address of the next offset */ |
6aee8c6f | 1085 | truncate_to = FcCacheNextOffset (FcCacheNextOffset (current_arch_start + sizeof (FcCache) + dirs_count) + metadata.count) - current_arch_start; |
2dbe7597 | 1086 | header = malloc (10 + strlen (current_arch_machine_name)); |
eb0cf671 | 1087 | if (!header) |
ea44e218 | 1088 | goto bail4; |
2dbe7597 PL |
1089 | sprintf (header, "%8x ", (int)truncate_to); |
1090 | strcat (header, current_arch_machine_name); | |
eb0cf671 | 1091 | if (!FcCacheWriteString (fd, header)) |
ea44e218 | 1092 | goto bail5; |
212c9f43 | 1093 | |
2304e38f | 1094 | for (i = 0; i < dirs->size; i++) |
8245771d | 1095 | FcCacheWriteString (fd, (char *)dirs->strs[i]); |
2304e38f PL |
1096 | FcCacheWriteString (fd, ""); |
1097 | ||
4262e0b3 | 1098 | write (fd, &metadata, sizeof(FcCache)); |
a9698bed PL |
1099 | if (metadata.count) |
1100 | { | |
1101 | lseek (fd, FcCacheNextOffset (lseek(fd, 0, SEEK_END)), SEEK_SET); | |
1102 | write (fd, current_dir_block, metadata.count); | |
1103 | free (current_dir_block); | |
1104 | } | |
4262e0b3 | 1105 | |
2dbe7597 | 1106 | /* this actually serves to pad out the cache file, if needed */ |
212c9f43 | 1107 | if (ftruncate (fd, current_arch_start + truncate_to) == -1) |
ea44e218 | 1108 | goto bail5; |
212c9f43 PL |
1109 | |
1110 | close(fd); | |
1d879de2 | 1111 | if (!FcAtomicReplaceOrig(atomic)) |
ea44e218 | 1112 | goto bail5; |
1d879de2 PL |
1113 | FcAtomicUnlock (atomic); |
1114 | FcAtomicDestroy (atomic); | |
212c9f43 PL |
1115 | return FcTrue; |
1116 | ||
ea44e218 | 1117 | bail5: |
0230c9f8 | 1118 | free (header); |
ea44e218 | 1119 | bail4: |
1d879de2 | 1120 | close (fd); |
ea44e218 | 1121 | bail3: |
1d879de2 | 1122 | FcAtomicUnlock (atomic); |
ea44e218 | 1123 | bail2: |
1d879de2 | 1124 | FcAtomicDestroy (atomic); |
ea44e218 PL |
1125 | bail1: |
1126 | free (cache_hashed); | |
eb0cf671 | 1127 | bail0: |
8245771d | 1128 | unlink ((char *)cache_file); |
4262e0b3 | 1129 | free (cache_file); |
1d879de2 PL |
1130 | if (current_dir_block) |
1131 | free (current_dir_block); | |
1132 | bail: | |
212c9f43 PL |
1133 | return FcFalse; |
1134 | } | |
1135 | ||
2dbe7597 | 1136 | static char * |
eb0cf671 | 1137 | FcCacheMachineSignature () |
2dbe7597 PL |
1138 | { |
1139 | static char buf[MACHINE_SIGNATURE_SIZE]; | |
7fd7221e | 1140 | int32_t magic = ENDIAN_TEST; |
2dbe7597 PL |
1141 | char * m = (char *)&magic; |
1142 | ||
1143 | sprintf (buf, "%2x%2x%2x%2x " | |
1144 | "%4x %4x %4x %4x %4x %4x %4x %4x %4x %4x %4x %4x " | |
7fd7221e | 1145 | "%4x %4x %4x %4x %4x %4x %4x %4x\n", |
2dbe7597 | 1146 | m[0], m[1], m[2], m[3], |
cd310911 PL |
1147 | (unsigned int)sizeof (char), |
1148 | (unsigned int)sizeof (char *), | |
1149 | (unsigned int)sizeof (int), | |
1150 | (unsigned int)sizeof (FcPattern), | |
1151 | (unsigned int)sizeof (FcPatternEltPtr), | |
1152 | (unsigned int)sizeof (struct _FcPatternElt *), | |
1153 | (unsigned int)sizeof (FcPatternElt), | |
1154 | (unsigned int)sizeof (FcObjectPtr), | |
1155 | (unsigned int)sizeof (FcValueListPtr), | |
1156 | (unsigned int)sizeof (FcValue), | |
1157 | (unsigned int)sizeof (FcValueBinding), | |
1158 | (unsigned int)sizeof (struct _FcValueList *), | |
1159 | (unsigned int)sizeof (FcCharSet), | |
1160 | (unsigned int)sizeof (FcCharLeaf **), | |
1161 | (unsigned int)sizeof (FcChar16 *), | |
1162 | (unsigned int)sizeof (FcChar16), | |
1163 | (unsigned int)sizeof (FcCharLeaf), | |
1164 | (unsigned int)sizeof (FcChar32), | |
7fd7221e PL |
1165 | (unsigned int)sizeof (FcCache), |
1166 | (unsigned int)sysconf(_SC_PAGESIZE)); | |
2dbe7597 PL |
1167 | |
1168 | return buf; | |
1169 | } | |
1170 | ||
4262e0b3 | 1171 | static int banks_ptr = 0, banks_alloc = 0; |
b8948e85 | 1172 | int * _fcBankId = 0, * _fcBankIdx = 0; |
e77c1718 | 1173 | static const char ** bankDirs = 0; |
4262e0b3 | 1174 | |
eb0cf671 | 1175 | static FcBool |
4262e0b3 PL |
1176 | FcCacheHaveBank (int bank) |
1177 | { | |
1178 | int i; | |
1179 | ||
1180 | if (bank < FC_BANK_FIRST) | |
1181 | return FcTrue; | |
1182 | ||
1183 | for (i = 0; i < banks_ptr; i++) | |
b8948e85 | 1184 | if (_fcBankId[i] == bank) |
4262e0b3 PL |
1185 | return FcTrue; |
1186 | ||
1187 | return FcFalse; | |
1188 | } | |
1189 | ||
1190 | int | |
b8948e85 | 1191 | FcCacheBankToIndexMTF (int bank) |
4262e0b3 | 1192 | { |
751932dd | 1193 | int i, j; |
4262e0b3 PL |
1194 | |
1195 | for (i = 0; i < banks_ptr; i++) | |
b8948e85 | 1196 | if (_fcBankId[_fcBankIdx[i]] == bank) |
751932dd | 1197 | { |
b8948e85 | 1198 | int t = _fcBankIdx[i]; |
751932dd PL |
1199 | |
1200 | for (j = i; j > 0; j--) | |
b8948e85 PL |
1201 | _fcBankIdx[j] = _fcBankIdx[j-1]; |
1202 | _fcBankIdx[0] = t; | |
751932dd PL |
1203 | return t; |
1204 | } | |
4262e0b3 | 1205 | |
2dbe7597 | 1206 | if (banks_ptr >= banks_alloc) |
4262e0b3 | 1207 | { |
751932dd | 1208 | int * b, * bidx; |
e77c1718 PL |
1209 | const char ** bds; |
1210 | ||
b8948e85 | 1211 | b = realloc (_fcBankId, (banks_alloc + 4) * sizeof(int)); |
4262e0b3 PL |
1212 | if (!b) |
1213 | return -1; | |
b8948e85 | 1214 | _fcBankId = b; |
751932dd | 1215 | |
b8948e85 | 1216 | bidx = realloc (_fcBankIdx, (banks_alloc + 4) * sizeof(int)); |
751932dd PL |
1217 | if (!bidx) |
1218 | return -1; | |
b8948e85 | 1219 | _fcBankIdx = bidx; |
751932dd | 1220 | |
e77c1718 PL |
1221 | bds = realloc (bankDirs, (banks_alloc + 4) * sizeof (char *)); |
1222 | if (!bds) | |
1223 | return -1; | |
1224 | bankDirs = bds; | |
1225 | ||
4262e0b3 PL |
1226 | banks_alloc += 4; |
1227 | } | |
1228 | ||
1229 | i = banks_ptr++; | |
b8948e85 PL |
1230 | _fcBankId[i] = bank; |
1231 | _fcBankIdx[i] = i; | |
4262e0b3 PL |
1232 | return i; |
1233 | } | |
e77c1718 PL |
1234 | |
1235 | static void | |
1236 | FcCacheAddBankDir (int bank, const char * dir) | |
1237 | { | |
b8948e85 | 1238 | int bi = FcCacheBankToIndexMTF (bank); |
e77c1718 PL |
1239 | |
1240 | if (bi < 0) | |
1241 | return; | |
1242 | ||
1243 | bankDirs[bi] = (const char *)FcStrCopy ((FcChar8 *)dir); | |
1244 | } | |
1245 | ||
1246 | const char * | |
1247 | FcCacheFindBankDir (int bank) | |
1248 | { | |
1249 | int bi = FcCacheBankToIndex (bank); | |
1250 | return bankDirs[bi]; | |
1251 | } | |
1252 | ||
ea44e218 PL |
1253 | /* |
1254 | * This code implements the MD5 message-digest algorithm. | |
1255 | * The algorithm is due to Ron Rivest. This code was | |
1256 | * written by Colin Plumb in 1993, no copyright is claimed. | |
1257 | * This code is in the public domain; do with it what you wish. | |
1258 | * | |
1259 | * Equivalent code is available from RSA Data Security, Inc. | |
1260 | * This code has been tested against that, and is equivalent, | |
1261 | * except that you don't need to include two pages of legalese | |
1262 | * with every copy. | |
1263 | * | |
1264 | * To compute the message digest of a chunk of bytes, declare an | |
1265 | * MD5Context structure, pass it to MD5Init, call MD5Update as | |
1266 | * needed on buffers full of bytes, and then call MD5Final, which | |
1267 | * will fill a supplied 16-byte array with the digest. | |
1268 | */ | |
1269 | ||
1270 | #ifndef HIGHFIRST | |
1271 | #define byteReverse(buf, len) /* Nothing */ | |
1272 | #else | |
1273 | /* | |
1274 | * Note: this code is harmless on little-endian machines. | |
1275 | */ | |
1276 | void byteReverse(unsigned char *buf, unsigned longs) | |
1277 | { | |
1278 | FcChar32 t; | |
1279 | do { | |
1280 | t = (FcChar32) ((unsigned) buf[3] << 8 | buf[2]) << 16 | | |
1281 | ((unsigned) buf[1] << 8 | buf[0]); | |
1282 | *(FcChar32 *) buf = t; | |
1283 | buf += 4; | |
1284 | } while (--longs); | |
1285 | } | |
1286 | #endif | |
1287 | ||
1288 | /* | |
1289 | * Start MD5 accumulation. Set bit count to 0 and buffer to mysterious | |
1290 | * initialization constants. | |
1291 | */ | |
1292 | static void MD5Init(struct MD5Context *ctx) | |
1293 | { | |
1294 | ctx->buf[0] = 0x67452301; | |
1295 | ctx->buf[1] = 0xefcdab89; | |
1296 | ctx->buf[2] = 0x98badcfe; | |
1297 | ctx->buf[3] = 0x10325476; | |
1298 | ||
1299 | ctx->bits[0] = 0; | |
1300 | ctx->bits[1] = 0; | |
1301 | } | |
1302 | ||
1303 | /* | |
1304 | * Update context to reflect the concatenation of another buffer full | |
1305 | * of bytes. | |
1306 | */ | |
1307 | static void MD5Update(struct MD5Context *ctx, unsigned char *buf, unsigned len) | |
1308 | { | |
1309 | FcChar32 t; | |
1310 | ||
1311 | /* Update bitcount */ | |
1312 | ||
1313 | t = ctx->bits[0]; | |
1314 | if ((ctx->bits[0] = t + ((FcChar32) len << 3)) < t) | |
1315 | ctx->bits[1]++; /* Carry from low to high */ | |
1316 | ctx->bits[1] += len >> 29; | |
1317 | ||
1318 | t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data */ | |
1319 | ||
1320 | /* Handle any leading odd-sized chunks */ | |
1321 | ||
1322 | if (t) { | |
1323 | unsigned char *p = (unsigned char *) ctx->in + t; | |
1324 | ||
1325 | t = 64 - t; | |
1326 | if (len < t) { | |
1327 | memcpy(p, buf, len); | |
1328 | return; | |
1329 | } | |
1330 | memcpy(p, buf, t); | |
1331 | byteReverse(ctx->in, 16); | |
1332 | MD5Transform(ctx->buf, (FcChar32 *) ctx->in); | |
1333 | buf += t; | |
1334 | len -= t; | |
1335 | } | |
1336 | /* Process data in 64-byte chunks */ | |
1337 | ||
1338 | while (len >= 64) { | |
1339 | memcpy(ctx->in, buf, 64); | |
1340 | byteReverse(ctx->in, 16); | |
1341 | MD5Transform(ctx->buf, (FcChar32 *) ctx->in); | |
1342 | buf += 64; | |
1343 | len -= 64; | |
1344 | } | |
1345 | ||
1346 | /* Handle any remaining bytes of data. */ | |
1347 | ||
1348 | memcpy(ctx->in, buf, len); | |
1349 | } | |
1350 | ||
1351 | /* | |
1352 | * Final wrapup - pad to 64-byte boundary with the bit pattern | |
1353 | * 1 0* (64-bit count of bits processed, MSB-first) | |
1354 | */ | |
1355 | static void MD5Final(unsigned char digest[16], struct MD5Context *ctx) | |
1356 | { | |
1357 | unsigned count; | |
1358 | unsigned char *p; | |
1359 | ||
1360 | /* Compute number of bytes mod 64 */ | |
1361 | count = (ctx->bits[0] >> 3) & 0x3F; | |
1362 | ||
1363 | /* Set the first char of padding to 0x80. This is safe since there is | |
1364 | always at least one byte free */ | |
1365 | p = ctx->in + count; | |
1366 | *p++ = 0x80; | |
1367 | ||
1368 | /* Bytes of padding needed to make 64 bytes */ | |
1369 | count = 64 - 1 - count; | |
1370 | ||
1371 | /* Pad out to 56 mod 64 */ | |
1372 | if (count < 8) { | |
1373 | /* Two lots of padding: Pad the first block to 64 bytes */ | |
1374 | memset(p, 0, count); | |
1375 | byteReverse(ctx->in, 16); | |
1376 | MD5Transform(ctx->buf, (FcChar32 *) ctx->in); | |
1377 | ||
1378 | /* Now fill the next block with 56 bytes */ | |
1379 | memset(ctx->in, 0, 56); | |
1380 | } else { | |
1381 | /* Pad block to 56 bytes */ | |
1382 | memset(p, 0, count - 8); | |
1383 | } | |
1384 | byteReverse(ctx->in, 14); | |
1385 | ||
1386 | /* Append length in bits and transform */ | |
1387 | ((FcChar32 *) ctx->in)[14] = ctx->bits[0]; | |
1388 | ((FcChar32 *) ctx->in)[15] = ctx->bits[1]; | |
1389 | ||
1390 | MD5Transform(ctx->buf, (FcChar32 *) ctx->in); | |
1391 | byteReverse((unsigned char *) ctx->buf, 4); | |
1392 | memcpy(digest, ctx->buf, 16); | |
1393 | memset(ctx, 0, sizeof(ctx)); /* In case it's sensitive */ | |
1394 | } | |
1395 | ||
1396 | ||
1397 | /* The four core functions - F1 is optimized somewhat */ | |
1398 | ||
1399 | /* #define F1(x, y, z) (x & y | ~x & z) */ | |
1400 | #define F1(x, y, z) (z ^ (x & (y ^ z))) | |
1401 | #define F2(x, y, z) F1(z, x, y) | |
1402 | #define F3(x, y, z) (x ^ y ^ z) | |
1403 | #define F4(x, y, z) (y ^ (x | ~z)) | |
1404 | ||
1405 | /* This is the central step in the MD5 algorithm. */ | |
1406 | #define MD5STEP(f, w, x, y, z, data, s) \ | |
1407 | ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x ) | |
1408 | ||
1409 | /* | |
1410 | * The core of the MD5 algorithm, this alters an existing MD5 hash to | |
1411 | * reflect the addition of 16 longwords of new data. MD5Update blocks | |
1412 | * the data and converts bytes into longwords for this routine. | |
1413 | */ | |
1414 | static void MD5Transform(FcChar32 buf[4], FcChar32 in[16]) | |
1415 | { | |
1416 | register FcChar32 a, b, c, d; | |
1417 | ||
1418 | a = buf[0]; | |
1419 | b = buf[1]; | |
1420 | c = buf[2]; | |
1421 | d = buf[3]; | |
1422 | ||
1423 | MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7); | |
1424 | MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12); | |
1425 | MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17); | |
1426 | MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22); | |
1427 | MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7); | |
1428 | MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12); | |
1429 | MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17); | |
1430 | MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22); | |
1431 | MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7); | |
1432 | MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12); | |
1433 | MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17); | |
1434 | MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22); | |
1435 | MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7); | |
1436 | MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12); | |
1437 | MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17); | |
1438 | MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22); | |
1439 | ||
1440 | MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5); | |
1441 | MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9); | |
1442 | MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14); | |
1443 | MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20); | |
1444 | MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5); | |
1445 | MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9); | |
1446 | MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14); | |
1447 | MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20); | |
1448 | MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5); | |
1449 | MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9); | |
1450 | MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14); | |
1451 | MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20); | |
1452 | MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5); | |
1453 | MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9); | |
1454 | MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14); | |
1455 | MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20); | |
1456 | ||
1457 | MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4); | |
1458 | MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11); | |
1459 | MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16); | |
1460 | MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23); | |
1461 | MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4); | |
1462 | MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11); | |
1463 | MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16); | |
1464 | MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23); | |
1465 | MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4); | |
1466 | MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11); | |
1467 | MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16); | |
1468 | MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23); | |
1469 | MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4); | |
1470 | MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11); | |
1471 | MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16); | |
1472 | MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23); | |
1473 | ||
1474 | MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6); | |
1475 | MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10); | |
1476 | MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15); | |
1477 | MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21); | |
1478 | MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6); | |
1479 | MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10); | |
1480 | MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15); | |
1481 | MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21); | |
1482 | MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6); | |
1483 | MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10); | |
1484 | MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15); | |
1485 | MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21); | |
1486 | MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6); | |
1487 | MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10); | |
1488 | MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15); | |
1489 | MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21); | |
1490 | ||
1491 | buf[0] += a; | |
1492 | buf[1] += b; | |
1493 | buf[2] += c; | |
1494 | buf[3] += d; | |
1495 | } |