/*
- * $XFree86: xc/lib/fontconfig/src/fccache.c,v 1.4 2002/03/01 01:00:54 keithp Exp $
- *
- * Copyright © 2000 Keith Packard, member of The XFree86 Project, Inc.
+ * Copyright © 2000 Keith Packard
+ * Copyright © 2005 Patrick Lam
*
* Permission to use, copy, modify, distribute, and sell this software and its
* documentation for any purpose is hereby granted without fee, provided that
*/
#include "fcint.h"
-
-static unsigned int
-FcFileCacheHash (const FcChar8 *string)
+#include "../fc-arch/fcarch.h"
+#include <stdio.h>
+#include <fcntl.h>
+#include <dirent.h>
+#include <string.h>
+#include <sys/types.h>
+#if defined(HAVE_MMAP) || defined(__CYGWIN__)
+# include <unistd.h>
+# include <sys/mman.h>
+#elif defined(_WIN32)
+# include <windows.h>
+#endif
+
+#ifndef O_BINARY
+#define O_BINARY 0
+#endif
+
+static int
+FcDirCacheOpen (FcConfig *config, const FcChar8 *dir, off_t *size);
+
+struct MD5Context {
+ FcChar32 buf[4];
+ FcChar32 bits[2];
+ unsigned char in[64];
+};
+
+static void MD5Init(struct MD5Context *ctx);
+static void MD5Update(struct MD5Context *ctx, unsigned char *buf, unsigned len);
+static void MD5Final(unsigned char digest[16], struct MD5Context *ctx);
+static void MD5Transform(FcChar32 buf[4], FcChar32 in[16]);
+
+#define FC_DBG_CACHE_REF 1024
+
+/* Does not check that the cache has the appropriate arch section. */
+FcBool
+FcDirCacheValid (const FcChar8 *dir, FcConfig *config)
{
- unsigned int h = 0;
- FcChar8 c;
+ int fd;
- while ((c = *string++))
- h = (h << 1) ^ c;
- return h;
-}
+ fd = FcDirCacheOpen (config, dir, NULL);
-FcChar8 *
-FcFileCacheFind (FcFileCache *cache,
- const FcChar8 *file,
- int id,
- int *count)
-{
- unsigned int hash;
- const FcChar8 *match;
- FcFileCacheEnt *c, *name;
- int maxid;
- struct stat statb;
-
- match = file;
-
- hash = FcFileCacheHash (match);
- name = 0;
- maxid = -1;
- for (c = cache->ents[hash % FC_FILE_CACHE_HASH_SIZE]; c; c = c->next)
- {
- if (c->hash == hash && !strcmp ((const char *) match, (const char *) c->file))
- {
- if (c->id > maxid)
- maxid = c->id;
- if (c->id == id)
- {
- if (stat ((char *) file, &statb) < 0)
- {
- if (FcDebug () & FC_DBG_CACHE)
- printf (" file missing\n");
- return 0;
- }
- if (statb.st_mtime != c->time)
- {
- if (FcDebug () & FC_DBG_CACHE)
- printf (" timestamp mismatch (was %d is %d)\n",
- (int) c->time, (int) statb.st_mtime);
- return 0;
- }
- if (!c->referenced)
- {
- cache->referenced++;
- c->referenced = FcTrue;
- }
- name = c;
- }
- }
- }
- if (!name)
- return 0;
- *count = maxid + 1;
- return name->name;
+ if (fd < 0)
+ return FcFalse;
+ close (fd);
+
+ return FcTrue;
}
-/*
- * Cache file syntax is quite simple:
- *
- * "file_name" id time "font_name" \n
- */
-
+#define CACHEBASE_LEN (1 + 32 + 1 + sizeof (FC_ARCHITECTURE) + sizeof (FC_CACHE_SUFFIX))
+
+static const char bin2hex[] = { '0', '1', '2', '3',
+ '4', '5', '6', '7',
+ '8', '9', 'a', 'b',
+ 'c', 'd', 'e', 'f' };
+
static FcChar8 *
-FcFileCacheReadString (FILE *f, FcChar8 *dest, int len)
+FcDirCacheBasename (const FcChar8 * dir, FcChar8 cache_base[CACHEBASE_LEN])
{
- int c;
- FcBool escape;
- FcChar8 *d;
- int size;
- int i;
+ unsigned char hash[16];
+ FcChar8 *hex_hash;
+ int cnt;
+ struct MD5Context ctx;
- while ((c = getc (f)) != EOF)
- if (c == '"')
- break;
- if (c == EOF)
- return FcFalse;
- if (len == 0)
- return FcFalse;
-
- size = len;
- i = 0;
- d = dest;
- escape = FcFalse;
- while ((c = getc (f)) != EOF)
+ MD5Init (&ctx);
+ MD5Update (&ctx, (unsigned char *)dir, strlen ((char *) dir));
+
+ MD5Final (hash, &ctx);
+
+ cache_base[0] = '/';
+ hex_hash = cache_base + 1;
+ for (cnt = 0; cnt < 16; ++cnt)
{
- if (!escape)
- {
- switch (c) {
- case '"':
- c = '\0';
- break;
- case '\\':
- escape = FcTrue;
- continue;
- }
- }
- if (i == size)
- {
- FcChar8 *new = malloc (size * 2);
- if (!new)
- break;
- memcpy (new, d, size);
- size *= 2;
- if (d != dest)
- free (d);
- d = new;
- }
- d[i++] = c;
- if (c == '\0')
- return d;
- escape = FcFalse;
+ hex_hash[2*cnt ] = bin2hex[hash[cnt] >> 4];
+ hex_hash[2*cnt+1] = bin2hex[hash[cnt] & 0xf];
}
- if (d != dest)
- free (d);
- return 0;
+ hex_hash[2*cnt] = 0;
+ strcat ((char *) cache_base, "-" FC_ARCHITECTURE FC_CACHE_SUFFIX);
+
+ return cache_base;
}
-static FcBool
-FcFileCacheReadUlong (FILE *f, unsigned long *dest)
+FcBool
+FcDirCacheUnlink (const FcChar8 *dir, FcConfig *config)
{
- unsigned long t;
- int c;
+ FcChar8 *cache_hashed = NULL;
+ FcChar8 cache_base[CACHEBASE_LEN];
+ FcStrList *list;
+ FcChar8 *cache_dir;
+
+ FcDirCacheBasename (dir, cache_base);
- while ((c = getc (f)) != EOF)
+ list = FcStrListCreate (config->cacheDirs);
+ if (!list)
+ return FcFalse;
+
+ while ((cache_dir = FcStrListNext (list)))
{
- if (!isspace (c))
+ cache_hashed = FcStrPlus (cache_dir, cache_base);
+ if (!cache_hashed)
break;
+ (void) unlink ((char *) cache_hashed);
}
- if (c == EOF)
+ FcStrListDone (list);
+ /* return FcFalse if something went wrong */
+ if (cache_dir)
return FcFalse;
- t = 0;
- for (;;)
- {
- if (c == EOF || isspace (c))
- break;
- if (!isdigit (c))
- return FcFalse;
- t = t * 10 + (c - '0');
- c = getc (f);
- }
- *dest = t;
return FcTrue;
}
-static FcBool
-FcFileCacheReadInt (FILE *f, int *dest)
+static int
+FcCacheReadDirs (FcConfig * config,
+ FcStrList *list, FcFontSet * set, FcStrSet *processed_dirs)
{
- unsigned long t;
- FcBool ret;
+ int ret = 0;
+ FcChar8 *dir;
+ FcStrSet *subdirs;
+ FcStrList *sublist;
+
+ /*
+ * Read in the results from 'list'.
+ */
+ while ((dir = FcStrListNext (list)))
+ {
+ if (!FcConfigAcceptFilename (config, dir))
+ continue;
+
+ /* Skip this directory if already updated
+ * to avoid the looped directories via symlinks
+ * Clearly a dir not in fonts.conf shouldn't be globally cached.
+ */
- ret = FcFileCacheReadUlong (f, &t);
- if (ret)
- *dest = (int) t;
+ if (FcStrSetMember (processed_dirs, dir))
+ continue;
+ if (!FcStrSetAdd (processed_dirs, dir))
+ continue;
+
+ subdirs = FcStrSetCreate ();
+ if (!subdirs)
+ {
+ fprintf (stderr, "Can't create directory set\n");
+ ret++;
+ continue;
+ }
+
+ FcDirScanConfig (set, subdirs,
+ config->blanks, dir, FcFalse, config);
+
+ sublist = FcStrListCreate (subdirs);
+ FcStrSetDestroy (subdirs);
+ if (!sublist)
+ {
+ fprintf (stderr, "Can't create subdir list in \"%s\"\n", dir);
+ ret++;
+ continue;
+ }
+ ret += FcCacheReadDirs (config, sublist, set, processed_dirs);
+ }
+ FcStrListDone (list);
return ret;
}
-static FcBool
-FcFileCacheReadTime (FILE *f, time_t *dest)
+FcFontSet *
+FcCacheRead (FcConfig *config)
{
- unsigned long t;
- FcBool ret;
+ FcFontSet *s = FcFontSetCreate();
+ FcStrSet *processed_dirs;
- ret = FcFileCacheReadUlong (f, &t);
- if (ret)
- *dest = (time_t) t;
- return ret;
+ if (!s)
+ return 0;
+
+ processed_dirs = FcStrSetCreate();
+ if (!processed_dirs)
+ goto bail;
+
+ if (FcCacheReadDirs (config, FcConfigGetConfigDirs (config), s, processed_dirs))
+ goto bail1;
+
+ FcStrSetDestroy (processed_dirs);
+ return s;
+
+ bail1:
+ FcStrSetDestroy (processed_dirs);
+ bail:
+ FcFontSetDestroy (s);
+ return 0;
}
-static FcBool
-FcFileCacheAdd (FcFileCache *cache,
- const FcChar8 *file,
- int id,
- time_t time,
- const FcChar8 *name,
- FcBool replace)
+/* Opens the cache file for 'dir' for reading.
+ * This searches the list of cache dirs for the relevant cache file,
+ * returning the first one found.
+ */
+static int
+FcDirCacheOpen (FcConfig *config, const FcChar8 *dir, off_t *size)
{
- FcFileCacheEnt *c;
- FcFileCacheEnt **prev, *old;
- unsigned int hash;
+ int fd = -1;
+ FcChar8 cache_base[CACHEBASE_LEN];
+ FcStrList *list;
+ FcChar8 *cache_dir;
+ struct stat file_stat, dir_stat;
- if (FcDebug () & FC_DBG_CACHE)
- {
- printf ("%s face %s/%d as %s\n", replace ? "Replace" : "Add",
- file, id, name);
- }
- hash = FcFileCacheHash (file);
- for (prev = &cache->ents[hash % FC_FILE_CACHE_HASH_SIZE];
- (old = *prev);
- prev = &(*prev)->next)
+ if (stat ((char *) dir, &dir_stat) < 0)
+ return -1;
+
+ FcDirCacheBasename (dir, cache_base);
+
+ list = FcStrListCreate (config->cacheDirs);
+ if (!list)
+ return -1;
+
+ while ((cache_dir = FcStrListNext (list)))
{
- if (old->hash == hash && old->id == id && !strcmp ((const char *) old->file,
- (const char *) file))
+ FcChar8 *cache_hashed = FcStrPlus (cache_dir, cache_base);
+ if (!cache_hashed)
break;
+ fd = open((char *) cache_hashed, O_RDONLY | O_BINARY);
+ FcStrFree (cache_hashed);
+ if (fd >= 0) {
+ if (fstat (fd, &file_stat) >= 0 &&
+ dir_stat.st_mtime <= file_stat.st_mtime)
+ {
+ if (size)
+ *size = file_stat.st_size;
+ break;
+ }
+ close (fd);
+ fd = -1;
+ }
}
- if (*prev)
- {
- if (!replace)
- return FcFalse;
-
- old = *prev;
- if (old->referenced)
- cache->referenced--;
- *prev = old->next;
- free (old);
- cache->entries--;
- }
-
- c = malloc (sizeof (FcFileCacheEnt) +
- strlen ((char *) file) + 1 +
- strlen ((char *) name) + 1);
- if (!c)
- return FcFalse;
- c->next = *prev;
- *prev = c;
- c->hash = hash;
- c->file = (FcChar8 *) (c + 1);
- c->id = id;
- c->name = c->file + strlen ((char *) file) + 1;
- strcpy ((char *) c->file, (const char *) file);
- c->time = time;
- c->referenced = replace;
- strcpy ((char *) c->name, (const char *) name);
- cache->entries++;
- return FcTrue;
+ FcStrListDone (list);
+
+ return fd;
}
-FcFileCache *
-FcFileCacheCreate (void)
+#if 0
+static void
+FcDirCacheUnmap (FcCache *cache)
{
- FcFileCache *cache;
- int h;
-
- cache = malloc (sizeof (FcFileCache));
- if (!cache)
- return 0;
- for (h = 0; h < FC_FILE_CACHE_HASH_SIZE; h++)
- cache->ents[h] = 0;
- cache->entries = 0;
- cache->referenced = 0;
- cache->updated = FcFalse;
- return cache;
+ if (cache->magic == FC_CACHE_MAGIC_COPY)
+ {
+ free (cache);
+ return;
+ }
+#if defined(HAVE_MMAP) || defined(__CYGWIN__)
+ munmap (cache, cache->size);
+#elif defined(_WIN32)
+ UnmapViewOfFile (cache);
+#endif
}
+#endif
-void
-FcFileCacheDestroy (FcFileCache *cache)
+/* read serialized state from the cache file */
+static FcCache *
+FcDirCacheMap (int fd, off_t size)
{
- FcFileCacheEnt *c, *next;
- int h;
-
- for (h = 0; h < FC_FILE_CACHE_HASH_SIZE; h++)
+ FcCache *cache;
+ FcBool allocated = FcFalse;
+
+ if (size < sizeof (FcCache))
+ return NULL;
+#if defined(HAVE_MMAP) || defined(__CYGWIN__)
+ cache = mmap (0, size, PROT_READ, MAP_SHARED, fd, 0);
+#elif defined(_WIN32)
{
- for (c = cache->ents[h]; c; c = next)
+ HANDLE hFileMap;
+
+ cache = NULL;
+ hFileMap = CreateFileMapping((HANDLE) _get_osfhandle(fd), NULL,
+ PAGE_READONLY, 0, 0, NULL);
+ if (hFileMap != NULL)
{
- next = c->next;
- free (c);
+ cache = MapViewOfFile (hFileMap, FILE_MAP_READ, 0, 0, size);
+ CloseHandle (hFileMap);
}
}
- free (cache);
-}
-
-void
-FcFileCacheLoad (FcFileCache *cache,
- const FcChar8 *cache_file)
-{
- FILE *f;
- FcChar8 file_buf[8192], *file;
- int id;
- time_t time;
- FcChar8 name_buf[8192], *name;
-
- f = fopen ((char *) cache_file, "r");
- if (!f)
- return;
+#endif
+ if (!cache)
+ {
+ cache = malloc (size);
+ if (!cache)
+ return NULL;
- cache->updated = FcFalse;
- file = 0;
- name = 0;
- while ((file = FcFileCacheReadString (f, file_buf, sizeof (file_buf))) &&
- FcFileCacheReadInt (f, &id) &&
- FcFileCacheReadTime (f, &time) &&
- (name = FcFileCacheReadString (f, name_buf, sizeof (name_buf))))
+ if (read (fd, cache, size) != size)
+ {
+ free (cache);
+ return NULL;
+ }
+ allocated = FcTrue;
+ }
+ if (cache->magic != FC_CACHE_MAGIC ||
+ cache->size != size)
{
- (void) FcFileCacheAdd (cache, file, id, time, name, FcFalse);
- if (file != file_buf)
- free (file);
- if (name != name_buf)
- free (name);
- file = 0;
- name = 0;
+ if (allocated)
+ free (cache);
+ else
+ {
+#if defined(HAVE_MMAP) || defined(__CYGWIN__)
+ munmap (cache, size);
+#elif defined(_WIN32)
+ UnmapViewOfFile (cache);
+#endif
+ }
+ return NULL;
}
- if (file && file != file_buf)
- free (file);
- if (name && name != name_buf)
- free (name);
- fclose (f);
+
+ /* Mark allocated caches so they're freed rather than unmapped */
+ if (allocated)
+ cache->magic = FC_CACHE_MAGIC_COPY;
+
+ return cache;
}
FcBool
-FcFileCacheUpdate (FcFileCache *cache,
- const FcChar8 *file,
- int id,
- const FcChar8 *name)
+FcDirCacheRead (FcFontSet * set, FcStrSet * dirs,
+ const FcChar8 *dir, FcConfig *config)
{
- const FcChar8 *match;
- struct stat statb;
- FcBool ret;
-
- match = file;
+ int fd;
+ FcCache *cache;
+ off_t size;
+ int i;
+ FcFontSet *cache_set;
+ intptr_t *cache_dirs;
+ FcPattern **cache_fonts;
- if (stat ((char *) file, &statb) < 0)
+ fd = FcDirCacheOpen (config, dir, &size);
+ if (fd < 0)
return FcFalse;
- ret = FcFileCacheAdd (cache, match, id,
- statb.st_mtime, name, FcTrue);
- if (ret)
- cache->updated = FcTrue;
- return ret;
-}
-static FcBool
-FcFileCacheWriteString (FILE *f, const FcChar8 *string)
-{
- char c;
-
- if (putc ('"', f) == EOF)
+ cache = FcDirCacheMap (fd, size);
+
+ if (!cache)
+ {
+ if (FcDebug() & FC_DBG_CACHE)
+ printf ("FcDirCacheRead failed to map cache for %s\n", dir);
+ close (fd);
return FcFalse;
- while ((c = *string++))
+ }
+
+ cache_set = FcCacheSet (cache);
+ cache_fonts = FcFontSetFonts(cache_set);
+ if (FcDebug() & FC_DBG_CACHE)
+ printf ("FcDirCacheRead mapped cache for %s (%d fonts %d subdirs)\n",
+ dir, cache_set->nfont, cache->dirs_count);
+ for (i = 0; i < cache_set->nfont; i++)
{
- switch (c) {
- case '"':
- case '\\':
- if (putc ('\\', f) == EOF)
- return FcFalse;
- /* fall through */
- default:
- if (putc (c, f) == EOF)
- return FcFalse;
+ FcPattern *font = FcEncodedOffsetToPtr (cache_set,
+ cache_fonts[i],
+ FcPattern);
+ if (FcDebug() & FC_DBG_CACHEV) {
+ printf ("Mapped font %d\n", i);
+ FcPatternPrint (font);
}
+ FcFontSetAdd (set, font);
}
- if (putc ('"', f) == EOF)
- return FcFalse;
+
+ cache_dirs = FcCacheDirs (cache);
+ for (i = 0; i < cache->dirs_count; i++)
+ FcStrSetAdd (dirs, FcOffsetToPtr (cache_dirs,
+ cache_dirs[i],
+ FcChar8));
+
+ if (config)
+ FcConfigAddFontDir (config, (FcChar8 *)dir);
+
+ close (fd);
return FcTrue;
}
+
+/*
+ * Cache file is:
+ *
+ * FcCache
+ * dir name
+ * subdirs
+ * FcFontSet
+ */
-static FcBool
-FcFileCacheWriteUlong (FILE *f, unsigned long t)
+static FcCache *
+FcDirCacheProduce (FcFontSet *set, const FcChar8 *dir, FcStrSet *dirs)
{
- int pow;
- unsigned long temp, digit;
+ FcSerialize *serialize = FcSerializeCreate ();
+ FcCache *cache;
+ int i;
+ intptr_t cache_offset;
+ intptr_t dirs_offset;
+ FcChar8 *dir_serialize;
+ intptr_t *dirs_serialize;
+ FcFontSet *set_serialize;
+
+ if (!serialize)
+ return NULL;
+ /*
+ * Space for cache structure
+ */
+ cache_offset = FcSerializeReserve (serialize, sizeof (FcCache));
+ /*
+ * Directory name
+ */
+ if (!FcStrSerializeAlloc (serialize, dir))
+ goto bail1;
+ /*
+ * Subdirs
+ */
+ dirs_offset = FcSerializeAlloc (serialize, dirs, dirs->num * sizeof (FcChar8 *));
+ for (i = 0; i < dirs->num; i++)
+ if (!FcStrSerializeAlloc (serialize, dirs->strs[i]))
+ goto bail1;
- temp = t;
- pow = 1;
- while (temp >= 10)
- {
- temp /= 10;
- pow *= 10;
- }
- temp = t;
- while (pow)
+ /*
+ * Patterns
+ */
+ if (!FcFontSetSerializeAlloc (serialize, set))
+ goto bail1;
+
+ /* Serialize layout complete. Now allocate space and fill it */
+ cache = malloc (serialize->size);
+ if (!cache)
+ goto bail1;
+ /* shut up valgrind */
+ memset (cache, 0, serialize->size);
+
+ serialize->linear = cache;
+
+ cache->magic = FC_CACHE_MAGIC;
+ cache->size = serialize->size;
+
+ /*
+ * Serialize directory name
+ */
+ dir_serialize = FcStrSerialize (serialize, dir);
+ if (!dir_serialize)
+ goto bail2;
+ cache->dir = FcPtrToOffset (cache, dir_serialize);
+
+ /*
+ * Serialize sub dirs
+ */
+ dirs_serialize = FcSerializePtr (serialize, dirs);
+ if (!dirs_serialize)
+ goto bail2;
+ cache->dirs = FcPtrToOffset (cache, dirs_serialize);
+ cache->dirs_count = dirs->num;
+ for (i = 0; i < dirs->num; i++)
{
- digit = temp / pow;
- if (putc ((char) digit + '0', f) == EOF)
- return FcFalse;
- temp = temp - pow * digit;
- pow = pow / 10;
+ FcChar8 *d_serialize = FcStrSerialize (serialize, dirs->strs[i]);
+ if (!d_serialize)
+ goto bail2;
+ dirs_serialize[i] = FcPtrToOffset (dirs_serialize, d_serialize);
}
- return FcTrue;
-}
+
+ /*
+ * Serialize font set
+ */
+ set_serialize = FcFontSetSerialize (serialize, set);
+ if (!set_serialize)
+ goto bail2;
+ cache->set = FcPtrToOffset (cache, set_serialize);
-static FcBool
-FcFileCacheWriteInt (FILE *f, int i)
-{
- return FcFileCacheWriteUlong (f, (unsigned long) i);
+ FcSerializeDestroy (serialize);
+
+ return cache;
+
+bail2:
+ free (cache);
+bail1:
+ FcSerializeDestroy (serialize);
+ return NULL;
}
static FcBool
-FcFileCacheWriteTime (FILE *f, time_t t)
+FcMakeDirectory (const FcChar8 *dir)
{
- return FcFileCacheWriteUlong (f, (unsigned long) t);
+ FcChar8 *parent;
+ FcBool ret;
+
+ if (strlen ((char *) dir) == 0)
+ return FcFalse;
+
+ parent = FcStrDirname (dir);
+ if (!parent)
+ return FcFalse;
+ if (access ((char *) parent, W_OK|X_OK) == 0)
+ ret = mkdir ((char *) dir, 0777) == 0;
+ else if (access ((char *) parent, F_OK) == -1)
+ ret = FcMakeDirectory (parent) && (mkdir ((char *) dir, 0777) == 0);
+ else
+ ret = FcFalse;
+ FcStrFree (parent);
+ return ret;
}
+/* write serialized state to the cache file */
FcBool
-FcFileCacheSave (FcFileCache *cache,
- const FcChar8 *cache_file)
+FcDirCacheWrite (FcFontSet *set, FcStrSet *dirs, const FcChar8 *dir, FcConfig *config)
{
- FILE *f;
- int h;
- FcFileCacheEnt *c;
- FcAtomic *atomic;
-
- if (!cache->updated && cache->referenced == cache->entries)
- return FcTrue;
+ FcChar8 cache_base[CACHEBASE_LEN];
+ FcChar8 *cache_hashed;
+ int fd;
+ FcAtomic *atomic;
+ FcCache *cache;
+ FcStrList *list;
+ FcChar8 *cache_dir = NULL;
+ FcChar8 *test_dir;
+
+ /*
+ * Write it to the first directory in the list which is writable
+ */
- atomic = FcAtomicCreate (cache_file);
- if (!atomic)
- goto bail0;
- if (!FcAtomicLock (atomic))
- goto bail1;
- f = fopen ((char *) FcAtomicNewFile(atomic), "w");
- if (!f)
- goto bail2;
-
- for (h = 0; h < FC_FILE_CACHE_HASH_SIZE; h++)
- {
- for (c = cache->ents[h]; c; c = c->next)
+ list = FcStrListCreate (config->cacheDirs);
+ if (!list)
+ return FcFalse;
+ while ((test_dir = FcStrListNext (list))) {
+ if (access ((char *) test_dir, W_OK|X_OK) == 0)
{
- if (!c->referenced)
- continue;
- if (!FcFileCacheWriteString (f, c->file))
- goto bail4;
- if (putc (' ', f) == EOF)
- goto bail4;
- if (!FcFileCacheWriteInt (f, c->id))
- goto bail4;
- if (putc (' ', f) == EOF)
- goto bail4;
- if (!FcFileCacheWriteTime (f, c->time))
- goto bail4;
- if (putc (' ', f) == EOF)
- goto bail4;
- if (!FcFileCacheWriteString (f, c->name))
- goto bail4;
- if (putc ('\n', f) == EOF)
- goto bail4;
+ cache_dir = test_dir;
+ break;
+ }
+ else
+ {
+ /*
+ * If the directory doesn't exist, try to create it
+ */
+ if (access ((char *) test_dir, F_OK) == -1) {
+ if (FcMakeDirectory (test_dir))
+ {
+ cache_dir = test_dir;
+ break;
+ }
+ }
}
}
+ FcStrListDone (list);
+ if (!cache_dir)
+ return FcFalse;
- if (fclose (f) == EOF)
- goto bail3;
-
- if (!FcAtomicReplaceOrig (atomic))
+ FcDirCacheBasename (dir, cache_base);
+ cache_hashed = FcStrPlus (cache_dir, cache_base);
+ if (!cache_hashed)
+ return FcFalse;
+
+ cache = FcDirCacheProduce (set, dir, dirs);
+
+ if (!cache)
+ goto bail1;
+
+ if (FcDebug () & FC_DBG_CACHE)
+ printf ("FcDirCacheWriteDir dir \"%s\" file \"%s\"\n",
+ dir, cache_hashed);
+
+ atomic = FcAtomicCreate ((FcChar8 *)cache_hashed);
+ if (!atomic)
+ goto bail2;
+
+ if (!FcAtomicLock (atomic))
goto bail3;
+
+ fd = open((char *)FcAtomicNewFile (atomic), O_RDWR | O_CREAT | O_BINARY, 0666);
+ if (fd == -1)
+ goto bail4;
+ if (write (fd, cache, cache->size) != cache->size)
+ {
+ perror ("write cache");
+ goto bail5;
+ }
+
+ close(fd);
+ if (!FcAtomicReplaceOrig(atomic))
+ goto bail4;
+ FcStrFree ((FcChar8 *)cache_hashed);
FcAtomicUnlock (atomic);
FcAtomicDestroy (atomic);
-
- cache->updated = FcFalse;
return FcTrue;
-bail4:
- fclose (f);
-bail3:
- FcAtomicDeleteNew (atomic);
-bail2:
+ bail5:
+ close (fd);
+ bail4:
FcAtomicUnlock (atomic);
-bail1:
+ bail3:
FcAtomicDestroy (atomic);
-bail0:
+ bail2:
+ free (cache);
+ bail1:
+ FcStrFree ((FcChar8 *)cache_hashed);
return FcFalse;
}
-FcBool
-FcFileCacheReadDir (FcFontSet *set, const FcChar8 *cache_file)
+/*
+ * This code implements the MD5 message-digest algorithm.
+ * The algorithm is due to Ron Rivest. This code was
+ * written by Colin Plumb in 1993, no copyright is claimed.
+ * This code is in the public domain; do with it what you wish.
+ *
+ * Equivalent code is available from RSA Data Security, Inc.
+ * This code has been tested against that, and is equivalent,
+ * except that you don't need to include two pages of legalese
+ * with every copy.
+ *
+ * To compute the message digest of a chunk of bytes, declare an
+ * MD5Context structure, pass it to MD5Init, call MD5Update as
+ * needed on buffers full of bytes, and then call MD5Final, which
+ * will fill a supplied 16-byte array with the digest.
+ */
+
+#ifndef HIGHFIRST
+#define byteReverse(buf, len) /* Nothing */
+#else
+/*
+ * Note: this code is harmless on little-endian machines.
+ */
+void byteReverse(unsigned char *buf, unsigned longs)
{
- FcPattern *font;
- FILE *f;
- FcChar8 *path;
- FcChar8 *base;
- FcChar8 file_buf[8192], *file;
- int id;
- FcChar8 name_buf[8192], *name;
- FcBool ret = FcFalse;
+ FcChar32 t;
+ do {
+ t = (FcChar32) ((unsigned) buf[3] << 8 | buf[2]) << 16 |
+ ((unsigned) buf[1] << 8 | buf[0]);
+ *(FcChar32 *) buf = t;
+ buf += 4;
+ } while (--longs);
+}
+#endif
- if (FcDebug () & FC_DBG_CACHE)
- {
- printf ("FcFileCacheReadDir cache_file \"%s\"\n", cache_file);
- }
-
- f = fopen ((char *) cache_file, "r");
- if (!f)
- {
- if (FcDebug () & FC_DBG_CACHE)
- {
- printf (" no cache file\n");
- }
- goto bail0;
- }
+/*
+ * Start MD5 accumulation. Set bit count to 0 and buffer to mysterious
+ * initialization constants.
+ */
+static void MD5Init(struct MD5Context *ctx)
+{
+ ctx->buf[0] = 0x67452301;
+ ctx->buf[1] = 0xefcdab89;
+ ctx->buf[2] = 0x98badcfe;
+ ctx->buf[3] = 0x10325476;
- base = (FcChar8 *) strrchr ((char *) cache_file, '/');
- if (!base)
- goto bail1;
- base++;
- path = malloc (base - cache_file + 8192 + 1);
- if (!path)
- goto bail1;
- memcpy (path, cache_file, base - cache_file);
- base = path + (base - cache_file);
-
- file = 0;
- name = 0;
- while ((file = FcFileCacheReadString (f, file_buf, sizeof (file_buf))) &&
- FcFileCacheReadInt (f, &id) &&
- (name = FcFileCacheReadString (f, name_buf, sizeof (name_buf))))
- {
- font = FcNameParse (name);
- if (font)
- {
- strcpy ((char *) base, (const char *) file);
- if (FcDebug () & FC_DBG_CACHEV)
- {
- printf (" dir cache file \"%s\"\n", file);
- }
- FcPatternAddString (font, FC_FILE, path);
- if (!FcFontSetAdd (set, font))
- goto bail2;
+ ctx->bits[0] = 0;
+ ctx->bits[1] = 0;
+}
+
+/*
+ * Update context to reflect the concatenation of another buffer full
+ * of bytes.
+ */
+static void MD5Update(struct MD5Context *ctx, unsigned char *buf, unsigned len)
+{
+ FcChar32 t;
+
+ /* Update bitcount */
+
+ t = ctx->bits[0];
+ if ((ctx->bits[0] = t + ((FcChar32) len << 3)) < t)
+ ctx->bits[1]++; /* Carry from low to high */
+ ctx->bits[1] += len >> 29;
+
+ t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data */
+
+ /* Handle any leading odd-sized chunks */
+
+ if (t) {
+ unsigned char *p = (unsigned char *) ctx->in + t;
+
+ t = 64 - t;
+ if (len < t) {
+ memcpy(p, buf, len);
+ return;
}
- if (file != file_buf)
- free (file);
- if (name != name_buf)
- free (name);
- file = name = 0;
+ memcpy(p, buf, t);
+ byteReverse(ctx->in, 16);
+ MD5Transform(ctx->buf, (FcChar32 *) ctx->in);
+ buf += t;
+ len -= t;
}
- if (FcDebug () & FC_DBG_CACHE)
- {
- printf (" cache loaded\n");
+ /* Process data in 64-byte chunks */
+
+ while (len >= 64) {
+ memcpy(ctx->in, buf, 64);
+ byteReverse(ctx->in, 16);
+ MD5Transform(ctx->buf, (FcChar32 *) ctx->in);
+ buf += 64;
+ len -= 64;
}
-
- ret = FcTrue;
-bail2:
- free (path);
- if (file && file != file_buf)
- free (file);
- if (name && name != name_buf)
- free (name);
-bail1:
- fclose (f);
-bail0:
- return ret;
+
+ /* Handle any remaining bytes of data. */
+
+ memcpy(ctx->in, buf, len);
}
-FcBool
-FcFileCacheWriteDir (FcFontSet *set, const FcChar8 *cache_file)
+/*
+ * Final wrapup - pad to 64-byte boundary with the bit pattern
+ * 1 0* (64-bit count of bits processed, MSB-first)
+ */
+static void MD5Final(unsigned char digest[16], struct MD5Context *ctx)
{
- FcPattern *font;
- FILE *f;
- FcChar8 *name;
- const FcChar8 *file, *base;
- int n;
- int id;
- FcBool ret;
-
- if (FcDebug () & FC_DBG_CACHE)
- printf ("FcFileCacheWriteDir cache_file \"%s\"\n", cache_file);
-
- f = fopen ((char *) cache_file, "w");
- if (!f)
- {
- if (FcDebug () & FC_DBG_CACHE)
- printf (" can't create \"%s\"\n", cache_file);
- goto bail0;
- }
- for (n = 0; n < set->nfont; n++)
- {
- font = set->fonts[n];
- if (FcPatternGetString (font, FC_FILE, 0, (FcChar8 **) &file) != FcResultMatch)
- goto bail1;
- base = (FcChar8 *) strrchr ((char *) file, '/');
- if (base)
- base = base + 1;
- else
- base = file;
- if (FcPatternGetInteger (font, FC_INDEX, 0, &id) != FcResultMatch)
- goto bail1;
- if (FcDebug () & FC_DBG_CACHEV)
- printf (" write file \"%s\"\n", base);
- if (!FcFileCacheWriteString (f, base))
- goto bail1;
- if (putc (' ', f) == EOF)
- goto bail1;
- if (!FcFileCacheWriteInt (f, id))
- goto bail1;
- if (putc (' ', f) == EOF)
- goto bail1;
- name = FcNameUnparse (font);
- if (!name)
- goto bail1;
- ret = FcFileCacheWriteString (f, name);
- free (name);
- if (!ret)
- goto bail1;
- if (putc ('\n', f) == EOF)
- goto bail1;
+ unsigned count;
+ unsigned char *p;
+
+ /* Compute number of bytes mod 64 */
+ count = (ctx->bits[0] >> 3) & 0x3F;
+
+ /* Set the first char of padding to 0x80. This is safe since there is
+ always at least one byte free */
+ p = ctx->in + count;
+ *p++ = 0x80;
+
+ /* Bytes of padding needed to make 64 bytes */
+ count = 64 - 1 - count;
+
+ /* Pad out to 56 mod 64 */
+ if (count < 8) {
+ /* Two lots of padding: Pad the first block to 64 bytes */
+ memset(p, 0, count);
+ byteReverse(ctx->in, 16);
+ MD5Transform(ctx->buf, (FcChar32 *) ctx->in);
+
+ /* Now fill the next block with 56 bytes */
+ memset(ctx->in, 0, 56);
+ } else {
+ /* Pad block to 56 bytes */
+ memset(p, 0, count - 8);
}
- if (fclose (f) == EOF)
- goto bail0;
-
- if (FcDebug () & FC_DBG_CACHE)
- printf (" cache written\n");
- return FcTrue;
-
-bail1:
- fclose (f);
-bail0:
- unlink ((char *) cache_file);
- return FcFalse;
+ byteReverse(ctx->in, 14);
+
+ /* Append length in bits and transform */
+ ((FcChar32 *) ctx->in)[14] = ctx->bits[0];
+ ((FcChar32 *) ctx->in)[15] = ctx->bits[1];
+
+ MD5Transform(ctx->buf, (FcChar32 *) ctx->in);
+ byteReverse((unsigned char *) ctx->buf, 4);
+ memcpy(digest, ctx->buf, 16);
+ memset(ctx, 0, sizeof(ctx)); /* In case it's sensitive */
+}
+
+
+/* The four core functions - F1 is optimized somewhat */
+
+/* #define F1(x, y, z) (x & y | ~x & z) */
+#define F1(x, y, z) (z ^ (x & (y ^ z)))
+#define F2(x, y, z) F1(z, x, y)
+#define F3(x, y, z) (x ^ y ^ z)
+#define F4(x, y, z) (y ^ (x | ~z))
+
+/* This is the central step in the MD5 algorithm. */
+#define MD5STEP(f, w, x, y, z, data, s) \
+ ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x )
+
+/*
+ * The core of the MD5 algorithm, this alters an existing MD5 hash to
+ * reflect the addition of 16 longwords of new data. MD5Update blocks
+ * the data and converts bytes into longwords for this routine.
+ */
+static void MD5Transform(FcChar32 buf[4], FcChar32 in[16])
+{
+ register FcChar32 a, b, c, d;
+
+ a = buf[0];
+ b = buf[1];
+ c = buf[2];
+ d = buf[3];
+
+ MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
+ MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
+ MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
+ MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
+ MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
+ MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
+ MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
+ MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
+ MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
+ MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
+ MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
+ MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
+ MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
+ MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
+ MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
+ MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);
+
+ MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);
+ MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);
+ MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
+ MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
+ MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);
+ MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
+ MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
+ MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
+ MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
+ MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
+ MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
+ MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);
+ MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
+ MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
+ MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);
+ MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
+
+ MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);
+ MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);
+ MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
+ MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
+ MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);
+ MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
+ MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
+ MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
+ MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
+ MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
+ MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
+ MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);
+ MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
+ MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
+ MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
+ MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
+
+ MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);
+ MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);
+ MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
+ MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);
+ MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
+ MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
+ MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
+ MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
+ MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
+ MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
+ MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
+ MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
+ MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
+ MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
+ MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
+ MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);
+
+ buf[0] += a;
+ buf[1] += b;
+ buf[2] += c;
+ buf[3] += d;
}
git.wh0rd.org / fontconfig.git / blobdiff