* $RCSId: xc/lib/fontconfig/src/fccache.c,v 1.12 2002/08/22 07:36:44 keithp Exp $
*
* 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
* PERFORMANCE OF THIS SOFTWARE.
*/
+#include "fcint.h"
+#include "../fc-arch/fcarch.h"
+#include <stdio.h>
#include <fcntl.h>
#include <dirent.h>
-#include <sys/mman.h>
-#include <sys/utsname.h>
-#include "fcint.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
#define ENDIAN_TEST 0x12345678
-#define MACHINE_SIGNATURE_SIZE 9 + 5*19 + 1
+#define MACHINE_SIGNATURE_SIZE (9 + 5*20 + 1)
+/* for when we don't have sysconf: */
+#define FC_HARDCODED_PAGESIZE 8192
-static char *
-FcCacheProduceMachineSignature (void);
-
-/*
- * POSIX has broken stdio so that getc must do thread-safe locking,
- * this is a serious performance problem for applications doing large
- * amounts of IO with getc (as is done here). If available, use
- * the getc_unlocked varient instead.
- */
-
-#if defined(getc_unlocked) || defined(_IO_getc_unlocked)
-#define GETC(f) getc_unlocked(f)
-#define PUTC(c,f) putc_unlocked(c,f)
-#else
-#define GETC(f) getc(f)
-#define PUTC(c,f) putc(c,f)
+#ifndef O_BINARY
+#define O_BINARY 0
#endif
-#define FC_DBG_CACHE_REF 1024
-
-#define PAGESIZE 8192
-
-static FcBool force;
-
-static FcChar8 *
-FcCacheReadString (FILE *f, FcChar8 *dest, int len)
-{
- int c;
- FcBool escape;
- FcChar8 *d;
- int size;
- int i;
-
- 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)
- {
- if (!escape)
- {
- switch (c) {
- case '"':
- c = '\0';
- break;
- case '\\':
- escape = FcTrue;
- continue;
- }
- }
- if (i == size)
- {
- FcChar8 *new = malloc (size * 2); /* freed in caller */
- 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;
- }
- if (d != dest)
- free (d);
- return 0;
-}
-
-static FcBool
-FcCacheReadUlong (FILE *f, unsigned long *dest)
-{
- unsigned long t;
- int c;
-
- while ((c = GETC (f)) != EOF)
- {
- if (!isspace (c))
- break;
- }
- if (c == EOF)
- 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
-FcCacheReadInt (FILE *f, int *dest)
-{
- unsigned long t;
- FcBool ret;
-
- ret = FcCacheReadUlong (f, &t);
- if (ret)
- *dest = (int) t;
- return ret;
-}
-
-static FcBool
-FcCacheReadTime (FILE *f, time_t *dest)
-{
- unsigned long t;
- FcBool ret;
+static FILE *
+FcDirCacheOpen (FcConfig *config, const FcChar8 *dir, FcChar8 **cache_path);
- ret = FcCacheReadUlong (f, &t);
- if (ret)
- *dest = (time_t) t;
- return ret;
-}
+static void *
+FcDirCacheProduce (FcFontSet *set, FcCache * metadata);
-static FcBool
-FcCacheWriteChars (FILE *f, const FcChar8 *chars)
-{
- FcChar8 c;
- while ((c = *chars++))
- {
- switch (c) {
- case '"':
- case '\\':
- if (PUTC ('\\', f) == EOF)
- return FcFalse;
- /* fall through */
- default:
- if (PUTC (c, f) == EOF)
- return FcFalse;
- }
- }
- return FcTrue;
-}
+static off_t
+FcCacheNextOffset(off_t w);
static FcBool
-FcCacheWriteString (FILE *f, const FcChar8 *string)
-{
-
- if (PUTC ('"', f) == EOF)
- return FcFalse;
- if (!FcCacheWriteChars (f, string))
- return FcFalse;
- if (PUTC ('"', f) == EOF)
- return FcFalse;
- return FcTrue;
-}
+FcCacheHaveBank (int bank);
-static FcBool
-FcCacheWritePath (FILE *f, const FcChar8 *dir, const FcChar8 *file)
-{
- if (PUTC ('"', f) == EOF)
- return FcFalse;
- if (dir)
- if (!FcCacheWriteChars (f, dir))
- return FcFalse;
-#ifdef _WIN32
- if (dir &&
- dir[strlen((const char *) dir) - 1] != '/' &&
- dir[strlen((const char *) dir) - 1] != '\\')
- {
- if (!FcCacheWriteChars (f, "\\"))
- return FcFalse;
- }
-#else
- if (dir && dir[strlen((const char *) dir) - 1] != '/')
- if (PUTC ('/', f) == EOF)
- return FcFalse;
-#endif
- if (!FcCacheWriteChars (f, file))
- return FcFalse;
- if (PUTC ('"', f) == EOF)
- return FcFalse;
- return FcTrue;
-}
+static void
+FcCacheAddBankDir (int bank, const char * dir);
-static FcBool
-FcCacheWriteUlong (FILE *f, unsigned long t)
-{
- int pow;
- unsigned long temp, digit;
+struct MD5Context {
+ FcChar32 buf[4];
+ FcChar32 bits[2];
+ unsigned char in[64];
+};
- temp = t;
- pow = 1;
- while (temp >= 10)
- {
- temp /= 10;
- pow *= 10;
- }
- temp = t;
- while (pow)
- {
- digit = temp / pow;
- if (PUTC ((char) digit + '0', f) == EOF)
- return FcFalse;
- temp = temp - pow * digit;
- pow = pow / 10;
- }
- return FcTrue;
-}
+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]);
-static FcBool
-FcCacheWriteInt (FILE *f, int i)
-{
- return FcCacheWriteUlong (f, (unsigned long) i);
-}
-
-static FcBool
-FcCacheWriteTime (FILE *f, time_t t)
-{
- return FcCacheWriteUlong (f, (unsigned long) t);
-}
+#define FC_DBG_CACHE_REF 1024
-static FcChar8 *
-FcCacheReadString2 (int fd, FcChar8 *dest, int len)
+static char *
+FcCacheReadString (FILE *file, char *dest, int len)
{
- FcChar8 c;
- FcBool escape;
- int size;
- int i;
+ int c;
+ char *d = dest;
if (len == 0)
- return FcFalse;
-
- size = len;
- i = 0;
- escape = FcFalse;
- while (read (fd, &c, 1) == 1)
- {
- if (!escape)
- {
- switch (c) {
- case '"':
- c = '\0';
- break;
- case '\\':
- escape = FcTrue;
- continue;
- }
- }
- if (i == size)
- {
- dest[i++] = 0;
- return dest;
- }
- dest[i++] = c;
+ return 0;
+
+ while ((c = getc (file)) != EOF && len > 0) {
+ *d++ = c;
if (c == '\0')
return dest;
- escape = FcFalse;
+ len--;
}
return 0;
}
static FcBool
-FcCacheWriteString2 (int fd, const FcChar8 *chars)
+FcCacheWriteString (int fd, const char *chars)
{
if (write (fd, chars, strlen(chars)+1) != strlen(chars)+1)
return FcFalse;
return FcTrue;
}
-static FcBool
-FcCacheFontSetAdd (FcFontSet *set,
- FcStrSet *dirs,
- const FcChar8 *dir,
- int dir_len,
- const FcChar8 *file,
- const FcChar8 *name,
- FcConfig *config)
-{
- FcChar8 path_buf[8192], *path;
- int len;
- FcBool ret = FcFalse;
- FcPattern *font;
- FcPattern *frozen;
-
- path = path_buf;
- len = (dir_len + 1 + strlen ((const char *) file) + 1);
- if (len > sizeof (path_buf))
- {
- path = malloc (len); /* freed down below */
- if (!path)
- return FcFalse;
- }
- strncpy ((char *) path, (const char *) dir, dir_len);
-#ifdef _WIN32
- if (dir[dir_len - 1] != '/' && dir[dir_len - 1] != '\\' )
- path[dir_len++] = '\\';
-#else
- if (dir[dir_len - 1] != '/')
- path[dir_len++] = '/';
-#endif
- strcpy ((char *) path + dir_len, (const char *) file);
- if (config && !FcConfigAcceptFilename (config, path))
- ret = FcTrue;
- else if (!FcStrCmp (name, FC_FONT_FILE_DIR))
- {
- if (FcDebug () & FC_DBG_CACHEV)
- printf (" dir cache dir \"%s\"\n", path);
- ret = FcStrSetAdd (dirs, path);
- }
- else if (!FcStrCmp (name, FC_FONT_FILE_INVALID))
- {
- ret = FcTrue;
- }
- else
- {
- font = FcNameParse (name);
- if (font)
- {
- FcChar8 *family;
-
- if (FcDebug () & FC_DBG_CACHEV)
- printf (" dir cache file \"%s\"\n", file);
- ret = FcPatternAddString (font, FC_FILE, path);
- /*
- * Make sure the pattern has the file name as well as
- * already containing at least one family name.
- */
- if (ret &&
- FcPatternGetString (font, FC_FAMILY, 0, &family) == FcResultMatch &&
- (!config || FcConfigAcceptFont (config, font)))
- {
- frozen = FcPatternFreeze (font);
- ret = (frozen != 0);
- if (ret)
- ret = FcFontSetAdd (set, frozen);
- }
- FcPatternDestroy (font);
- }
- }
- if (path != path_buf) free (path);
- return ret;
-
-}
-
-static unsigned int
-FcCacheHash (const FcChar8 *string, int len)
-{
- unsigned int h = 0;
- FcChar8 c;
-
- while (len-- && (c = *string++))
- h = (h << 1) ^ c;
- return h;
-}
-
-/*
- * Verify the saved timestamp for a file
- */
-FcBool
-FcGlobalCacheCheckTime (const FcChar8 *file, FcGlobalCacheInfo *info)
-{
- struct stat statb;
-
- if (stat ((char *) file, &statb) < 0)
- {
- if (FcDebug () & FC_DBG_CACHE)
- printf (" file %s missing\n", file);
- return FcFalse;
- }
- if (statb.st_mtime != info->time)
- {
- if (FcDebug () & FC_DBG_CACHE)
- printf (" timestamp mismatch (was %d is %d)\n",
- (int) info->time, (int) statb.st_mtime);
- return FcFalse;
- }
- return FcTrue;
-}
-
-void
-FcGlobalCacheReferenced (FcGlobalCache *cache,
- FcGlobalCacheInfo *info)
-{
- if (!info->referenced)
- {
- info->referenced = FcTrue;
- cache->referenced++;
- if (FcDebug () & FC_DBG_CACHE_REF)
- printf ("Reference %d %s\n", cache->referenced, info->file);
- }
-}
-
-/*
- * Break a path into dir/base elements and compute the base hash
- * and the dir length. This is shared between the functions
- * which walk the file caches
- */
-
-typedef struct _FcFilePathInfo {
- const FcChar8 *dir;
- int dir_len;
- const FcChar8 *base;
- unsigned int base_hash;
-} FcFilePathInfo;
-
-static FcFilePathInfo
-FcFilePathInfoGet (const FcChar8 *path)
-{
- FcFilePathInfo i;
- FcChar8 *slash;
-
- slash = FcStrLastSlash (path);
- if (slash)
- {
- i.dir = path;
- i.dir_len = slash - path;
- if (!i.dir_len)
- i.dir_len = 1;
- i.base = slash + 1;
- }
- else
- {
- i.dir = (const FcChar8 *) ".";
- i.dir_len = 1;
- i.base = path;
- }
- i.base_hash = FcCacheHash (i.base, -1);
- return i;
-}
-
-FcGlobalCacheDir *
-FcGlobalCacheDirGet (FcGlobalCache *cache,
- const FcChar8 *dir,
- int len,
- FcBool create_missing)
-{
- unsigned int hash = FcCacheHash (dir, len);
- FcGlobalCacheDir *d, **prev;
-
- for (prev = &cache->ents[hash % FC_GLOBAL_CACHE_DIR_HASH_SIZE];
- (d = *prev);
- prev = &(*prev)->next)
- {
- if (d->info.hash == hash && d->len == len &&
- !strncmp ((const char *) d->info.file,
- (const char *) dir, len))
- break;
- }
- if (!(d = *prev))
- {
- int i;
- if (!create_missing)
- return 0;
- d = malloc (sizeof (FcGlobalCacheDir) + len + 1);
- if (!d)
- return 0;
- FcMemAlloc (FC_MEM_CACHE, sizeof (FcGlobalCacheDir) + len + 1);
- d->next = *prev;
- *prev = d;
- d->info.hash = hash;
- d->info.file = (FcChar8 *) (d + 1);
- strncpy ((char *) d->info.file, (const char *) dir, len);
- d->info.file[len] = '\0';
- d->info.time = 0;
- d->info.referenced = FcFalse;
- d->len = len;
- for (i = 0; i < FC_GLOBAL_CACHE_FILE_HASH_SIZE; i++)
- d->ents[i] = 0;
- d->subdirs = 0;
- }
- return d;
-}
-
-static FcGlobalCacheInfo *
-FcGlobalCacheDirAdd (FcGlobalCache *cache,
- const FcChar8 *dir,
- time_t time,
- FcBool replace,
- FcBool create_missing)
-{
- FcGlobalCacheDir *d;
- FcFilePathInfo i;
- FcGlobalCacheSubdir *subdir;
- FcGlobalCacheDir *parent;
-
- i = FcFilePathInfoGet (dir);
- parent = FcGlobalCacheDirGet (cache, i.dir, i.dir_len, create_missing);
- /*
- * Tricky here -- directories containing fonts.cache-1 files
- * need entries only when the parent doesn't have a cache file.
- * That is, when the parent already exists in the cache, is
- * referenced and has a "real" timestamp. The time of 0 is
- * special and marks directories which got stuck in the
- * global cache for this very reason. Yes, it could
- * use a separate boolean field, and probably should.
- */
- if (!parent || (!create_missing &&
- (!parent->info.referenced ||
- (parent->info.time == 0))))
- return 0;
- /*
- * Add this directory to the cache
- */
- d = FcGlobalCacheDirGet (cache, dir, strlen ((const char *) dir), FcTrue);
- if (!d)
- return 0;
- d->info.time = time;
- /*
- * Add this directory to the subdirectory list of the parent
- */
- subdir = malloc (sizeof (FcGlobalCacheSubdir));
- if (!subdir)
- return 0;
- FcMemAlloc (FC_MEM_CACHE, sizeof (FcGlobalCacheSubdir));
- subdir->ent = d;
- subdir->next = parent->subdirs;
- parent->subdirs = subdir;
- return &d->info;
-}
-
-static void
-FcGlobalCacheDirDestroy (FcGlobalCacheDir *d)
-{
- FcGlobalCacheFile *f, *next;
- int h;
- FcGlobalCacheSubdir *s, *nexts;
-
- for (h = 0; h < FC_GLOBAL_CACHE_FILE_HASH_SIZE; h++)
- for (f = d->ents[h]; f; f = next)
- {
- next = f->next;
- FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCacheFile) +
- strlen ((char *) f->info.file) + 1 +
- strlen ((char *) f->name) + 1);
- free (f);
- }
- for (s = d->subdirs; s; s = nexts)
- {
- nexts = s->next;
- FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCacheSubdir));
- free (s);
- }
- FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCacheDir) + d->len + 1);
- free (d);
-}
-
-/*
- * If the parent is in the global cache and referenced, add
- * an entry for 'dir' to the global cache. This is used
- * for directories with fonts.cache files
- */
-
-void
-FcGlobalCacheReferenceSubdir (FcGlobalCache *cache,
- const FcChar8 *dir)
-{
- FcGlobalCacheInfo *info;
- info = FcGlobalCacheDirAdd (cache, dir, 0, FcFalse, FcFalse);
- if (info && !info->referenced)
- {
- info->referenced = FcTrue;
- cache->referenced++;
- }
-}
-
-/*
- * Check to see if the global cache contains valid data for 'dir'.
- * If so, scan the global cache for files and directories in 'dir'.
- * else, return False.
- */
-FcBool
-FcGlobalCacheScanDir (FcFontSet *set,
- FcStrSet *dirs,
- FcGlobalCache *cache,
- const FcChar8 *dir,
- FcConfig *config)
-{
- FcGlobalCacheDir *d = FcGlobalCacheDirGet (cache, dir,
- strlen ((const char *) dir),
- FcFalse);
- FcGlobalCacheFile *f;
- int h;
- int dir_len;
- FcGlobalCacheSubdir *subdir;
- FcBool any_in_cache = FcFalse;
-
- if (FcDebug() & FC_DBG_CACHE)
- printf ("FcGlobalCacheScanDir %s\n", dir);
-
- if (!d)
- {
- if (FcDebug () & FC_DBG_CACHE)
- printf ("\tNo dir cache entry\n");
- return FcFalse;
- }
-
- /*
- * See if the timestamp recorded in the global cache
- * matches the directory time, if not, return False
- */
- if (!FcGlobalCacheCheckTime (d->info.file, &d->info))
- {
- if (FcDebug () & FC_DBG_CACHE)
- printf ("\tdir cache entry time mismatch\n");
- return FcFalse;
- }
-
- /*
- * Add files from 'dir' to the fontset
- */
- dir_len = strlen ((const char *) dir);
- for (h = 0; h < FC_GLOBAL_CACHE_FILE_HASH_SIZE; h++)
- for (f = d->ents[h]; f; f = f->next)
- {
- if (FcDebug() & FC_DBG_CACHEV)
- printf ("FcGlobalCacheScanDir add file %s\n", f->info.file);
- any_in_cache = FcTrue;
- if (!FcCacheFontSetAdd (set, dirs, dir, dir_len,
- f->info.file, f->name, config))
- {
- cache->broken = FcTrue;
- return FcFalse;
- }
- FcGlobalCacheReferenced (cache, &f->info);
- }
- /*
- * Add directories in 'dir' to 'dirs'
- */
- for (subdir = d->subdirs; subdir; subdir = subdir->next)
- {
- FcFilePathInfo info = FcFilePathInfoGet (subdir->ent->info.file);
-
- any_in_cache = FcTrue;
- if (!FcCacheFontSetAdd (set, dirs, dir, dir_len,
- info.base, FC_FONT_FILE_DIR, config))
- {
- cache->broken = FcTrue;
- return FcFalse;
- }
- FcGlobalCacheReferenced (cache, &subdir->ent->info);
- }
-
- FcGlobalCacheReferenced (cache, &d->info);
-
- /*
- * To recover from a bug in previous versions of fontconfig,
- * return FcFalse if no entries in the cache were found
- * for this directory. This will cause any empty directories
- * to get rescanned every time fontconfig is initialized. This
- * might get removed at some point when the older cache files are
- * presumably fixed.
- */
- return any_in_cache;
-}
-
-/*
- * Locate the cache entry for a particular file
- */
-FcGlobalCacheFile *
-FcGlobalCacheFileGet (FcGlobalCache *cache,
- const FcChar8 *file,
- int id,
- int *count)
-{
- FcFilePathInfo i = FcFilePathInfoGet (file);
- FcGlobalCacheDir *d = FcGlobalCacheDirGet (cache, i.dir,
- i.dir_len, FcFalse);
- FcGlobalCacheFile *f, *match = 0;
- int max = -1;
-
- if (!d)
- return 0;
- for (f = d->ents[i.base_hash % FC_GLOBAL_CACHE_FILE_HASH_SIZE]; f; f = f->next)
- {
- if (f->info.hash == i.base_hash &&
- !strcmp ((const char *) f->info.file, (const char *) i.base))
- {
- if (f->id == id)
- match = f;
- if (f->id > max)
- max = f->id;
- }
- }
- if (count)
- *count = max + 1;
- return match;
-}
-
-/*
- * Add a file entry to the cache
- */
-static FcGlobalCacheInfo *
-FcGlobalCacheFileAdd (FcGlobalCache *cache,
- const FcChar8 *path,
- int id,
- time_t time,
- const FcChar8 *name,
- FcBool replace)
-{
- FcFilePathInfo i = FcFilePathInfoGet (path);
- FcGlobalCacheDir *d = FcGlobalCacheDirGet (cache, i.dir,
- i.dir_len, FcTrue);
- FcGlobalCacheFile *f, **prev;
- int size;
-
- if (!d)
- return 0;
- for (prev = &d->ents[i.base_hash % FC_GLOBAL_CACHE_FILE_HASH_SIZE];
- (f = *prev);
- prev = &(*prev)->next)
- {
- if (f->info.hash == i.base_hash &&
- f->id == id &&
- !strcmp ((const char *) f->info.file, (const char *) i.base))
- {
- break;
- }
- }
- if (*prev)
- {
- if (!replace)
- return 0;
-
- f = *prev;
- if (f->info.referenced)
- cache->referenced--;
- *prev = f->next;
- FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCacheFile) +
- strlen ((char *) f->info.file) + 1 +
- strlen ((char *) f->name) + 1);
- free (f);
- }
- size = (sizeof (FcGlobalCacheFile) +
- strlen ((char *) i.base) + 1 +
- strlen ((char *) name) + 1);
- f = malloc (size);
- if (!f)
- return 0;
- FcMemAlloc (FC_MEM_CACHE, size);
- f->next = *prev;
- *prev = f;
- f->info.hash = i.base_hash;
- f->info.file = (FcChar8 *) (f + 1);
- f->info.time = time;
- f->info.referenced = FcFalse;
- f->id = id;
- f->name = f->info.file + strlen ((char *) i.base) + 1;
- strcpy ((char *) f->info.file, (const char *) i.base);
- strcpy ((char *) f->name, (const char *) name);
- return &f->info;
-}
-
-FcGlobalCache *
-FcGlobalCacheCreate (void)
-{
- FcGlobalCache *cache;
- int h;
-
- cache = malloc (sizeof (FcGlobalCache));
- if (!cache)
- return 0;
- FcMemAlloc (FC_MEM_CACHE, sizeof (FcGlobalCache));
- for (h = 0; h < FC_GLOBAL_CACHE_DIR_HASH_SIZE; h++)
- cache->ents[h] = 0;
- cache->entries = 0;
- cache->referenced = 0;
- cache->updated = FcFalse;
- cache->broken = FcFalse;
- return cache;
-}
-
-void
-FcGlobalCacheDestroy (FcGlobalCache *cache)
-{
- FcGlobalCacheDir *d, *next;
- int h;
-
- for (h = 0; h < FC_GLOBAL_CACHE_DIR_HASH_SIZE; h++)
- {
- for (d = cache->ents[h]; d; d = next)
- {
- next = d->next;
- FcGlobalCacheDirDestroy (d);
- }
- }
- FcMemFree (FC_MEM_CACHE, sizeof (FcGlobalCache));
- free (cache);
-}
-
-/*
- * Cache file syntax is quite simple:
- *
- * "file_name" id time "font_name" \n
+/*
+ * Find the next presumably-mmapable offset after the supplied file
+ * position.
*/
-
-void
-FcGlobalCacheLoad (FcGlobalCache *cache,
- const FcChar8 *cache_file)
-{
- FILE *f;
- FcChar8 file_buf[8192], *file;
- int id;
- time_t time;
- FcChar8 name_buf[8192], *name;
- FcGlobalCacheInfo *info;
-
- f = fopen ((char *) cache_file, "r");
- if (!f)
- return;
-
- cache->updated = FcFalse;
- file = 0;
- name = 0;
- while ((file = FcCacheReadString (f, file_buf, sizeof (file_buf))) &&
- FcCacheReadInt (f, &id) &&
- FcCacheReadTime (f, &time) &&
- (name = FcCacheReadString (f, name_buf, sizeof (name_buf))))
- {
- if (FcDebug () & FC_DBG_CACHEV)
- printf ("FcGlobalCacheLoad \"%s\" \"%20.20s\"\n", file, name);
- if (!FcStrCmp (name, FC_FONT_FILE_DIR))
- info = FcGlobalCacheDirAdd (cache, file, time, FcFalse, FcTrue);
- else
- info = FcGlobalCacheFileAdd (cache, file, id, time, name, FcFalse);
- if (!info)
- cache->broken = FcTrue;
- else
- cache->entries++;
- if (FcDebug () & FC_DBG_CACHE_REF)
- printf ("FcGlobalCacheLoad entry %d %s\n",
- cache->entries, file);
- if (file != file_buf)
- free (file);
- if (name != name_buf)
- free (name);
- file = 0;
- name = 0;
- }
- if (file && file != file_buf)
- free (file);
- if (name && name != name_buf)
- free (name);
- fclose (f);
-}
-
-FcBool
-FcGlobalCacheUpdate (FcGlobalCache *cache,
- const FcChar8 *file,
- int id,
- const FcChar8 *name)
+static off_t
+FcCacheNextOffset(off_t w)
{
- const FcChar8 *match;
- struct stat statb;
- FcGlobalCacheInfo *info;
+ static long pagesize = -1;
- match = file;
+ if (w == -1)
+ return w;
- if (stat ((char *) file, &statb) < 0)
- return FcFalse;
- if (S_ISDIR (statb.st_mode))
- info = FcGlobalCacheDirAdd (cache, file, statb.st_mtime,
- FcTrue, FcTrue);
- else
- info = FcGlobalCacheFileAdd (cache, file, id, statb.st_mtime,
- name, FcTrue);
- if (info)
- {
- FcGlobalCacheReferenced (cache, info);
- cache->updated = FcTrue;
- }
+ if (pagesize == -1)
+#if defined (HAVE_SYSCONF)
+ pagesize = sysconf(_SC_PAGESIZE);
+#else
+ pagesize = FC_HARDCODED_PAGESIZE;
+#endif
+ if (w % pagesize == 0)
+ return w;
else
- cache->broken = FcTrue;
- return info != 0;
+ return ((w / pagesize)+1)*pagesize;
}
+/* Does not check that the cache has the appropriate arch section. */
FcBool
-FcGlobalCacheSave (FcGlobalCache *cache,
- const FcChar8 *cache_file)
+FcDirCacheValid (const FcChar8 *dir, FcConfig *config)
{
- FILE *f;
- int dir_hash, file_hash;
- FcGlobalCacheDir *dir;
- FcGlobalCacheFile *file;
- FcAtomic *atomic;
+ FILE *file;
- if (!cache->updated && cache->referenced == cache->entries)
- return FcTrue;
-
- if (cache->broken)
- return FcFalse;
+ file = FcDirCacheOpen (config, dir, NULL);
-#if defined (HAVE_GETUID) && defined (HAVE_GETEUID)
- /* Set-UID programs can't safely update the cache */
- if (getuid () != geteuid ())
+ if (file != NULL)
return FcFalse;
-#endif
-
- atomic = FcAtomicCreate (cache_file);
- if (!atomic)
- goto bail0;
- if (!FcAtomicLock (atomic))
- goto bail1;
- f = fopen ((char *) FcAtomicNewFile(atomic), "w");
- if (!f)
- goto bail2;
+ fclose (file);
- for (dir_hash = 0; dir_hash < FC_GLOBAL_CACHE_DIR_HASH_SIZE; dir_hash++)
- {
- for (dir = cache->ents[dir_hash]; dir; dir = dir->next)
- {
- if (!dir->info.referenced)
- continue;
- if (!FcCacheWriteString (f, dir->info.file))
- goto bail4;
- if (PUTC (' ', f) == EOF)
- goto bail4;
- if (!FcCacheWriteInt (f, 0))
- goto bail4;
- if (PUTC (' ', f) == EOF)
- goto bail4;
- if (!FcCacheWriteTime (f, dir->info.time))
- goto bail4;
- if (PUTC (' ', f) == EOF)
- goto bail4;
- if (!FcCacheWriteString (f, (FcChar8 *) FC_FONT_FILE_DIR))
- goto bail4;
- if (PUTC ('\n', f) == EOF)
- goto bail4;
-
- for (file_hash = 0; file_hash < FC_GLOBAL_CACHE_FILE_HASH_SIZE; file_hash++)
- {
- for (file = dir->ents[file_hash]; file; file = file->next)
- {
- if (!file->info.referenced)
- continue;
- if (!FcCacheWritePath (f, dir->info.file, file->info.file))
- goto bail4;
- if (PUTC (' ', f) == EOF)
- goto bail4;
- if (!FcCacheWriteInt (f, file->id < 0 ? 0 : file->id))
- goto bail4;
- if (PUTC (' ', f) == EOF)
- goto bail4;
- if (!FcCacheWriteTime (f, file->info.time))
- goto bail4;
- if (PUTC (' ', f) == EOF)
- goto bail4;
- if (!FcCacheWriteString (f, file->name))
- goto bail4;
- if (PUTC ('\n', f) == EOF)
- goto bail4;
- }
- }
- }
- }
-
- if (fclose (f) == EOF)
- goto bail3;
-
- if (!FcAtomicReplaceOrig (atomic))
- goto bail3;
-
- FcAtomicUnlock (atomic);
- FcAtomicDestroy (atomic);
-
- cache->updated = FcFalse;
return FcTrue;
-
-bail4:
- fclose (f);
-bail3:
- FcAtomicDeleteNew (atomic);
-bail2:
- FcAtomicUnlock (atomic);
-bail1:
- FcAtomicDestroy (atomic);
-bail0:
- return FcFalse;
}
-/*
- * Find the next presumably-mmapable offset after the current file
- * pointer.
- */
-static int
-FcCacheNextOffset(off_t w)
-{
- if (w % PAGESIZE == 0)
- return w;
- else
- return ((w / PAGESIZE)+1)*PAGESIZE;
-}
+#define CACHEBASE_LEN (1 + 32 + 1 + sizeof (FC_ARCHITECTURE) + sizeof (FC_CACHE_SUFFIX))
-/* return the address of the segment for the provided arch,
- * or -1 if arch not found */
-static off_t
-FcCacheSkipToArch (int fd, const char * arch)
-{
- char candidate_arch_machine_name_count[MACHINE_SIGNATURE_SIZE + 9];
- char * candidate_arch;
- off_t current_arch_start = 0;
-
- /* skip arches that are not the current arch */
- while (1)
- {
- long bs;
-
- lseek (fd, current_arch_start, SEEK_SET);
- if (FcCacheReadString2 (fd, candidate_arch_machine_name_count,
- sizeof (candidate_arch_machine_name_count)) == 0)
- break;
- if (!strlen(candidate_arch_machine_name_count))
- return -1;
- bs = strtol(candidate_arch_machine_name_count, &candidate_arch, 16);
- candidate_arch++; /* skip leading space */
-
- if (strcmp (candidate_arch, arch)==0)
- break;
- current_arch_start += bs;
- }
-
- if (strcmp (candidate_arch, arch)!=0)
- return -1;
-
- return current_arch_start;
-}
-
-/* Cuts out the segment at the file pointer (moves everything else
- * down to cover it), and leaves the file pointer at the end of the
- * file. */
-#define BUF_SIZE 8192
+static const char bin2hex[] = { '0', '1', '2', '3',
+ '4', '5', '6', '7',
+ '8', '9', 'a', 'b',
+ 'c', 'd', 'e', 'f' };
-static FcBool
-FcCacheMoveDown (int fd, off_t start)
+static FcChar8 *
+FcDirCacheBasename (const FcChar8 * dir, FcChar8 cache_base[CACHEBASE_LEN])
{
- char * buf = malloc (BUF_SIZE);
- char candidate_arch_machine_name[MACHINE_SIGNATURE_SIZE + 9];
- long bs;
- int c, bytes_skipped;
+ unsigned char hash[16];
+ FcChar8 *hex_hash;
+ int cnt;
+ struct MD5Context ctx;
- if (!buf)
- return FcFalse;
-
- lseek (fd, start, SEEK_SET);
- if (FcCacheReadString2 (fd, candidate_arch_machine_name,
- sizeof (candidate_arch_machine_name)) == 0)
- goto done;
- if (!strlen(candidate_arch_machine_name))
- goto done;
+ MD5Init (&ctx);
+ MD5Update (&ctx, (unsigned char *)dir, strlen ((char *) dir));
- bs = strtol(candidate_arch_machine_name, 0, 16);
- if (bs == 0)
- goto done;
+ MD5Final (hash, &ctx);
- bytes_skipped = 0;
- do
+ cache_base[0] = '/';
+ hex_hash = cache_base + 1;
+ for (cnt = 0; cnt < 16; ++cnt)
{
- lseek (fd, start+bs+bytes_skipped, SEEK_SET);
- if ((c = read (fd, buf, BUF_SIZE)) <= 0)
- break;
- lseek (fd, start+bytes_skipped, SEEK_SET);
- if (write (fd, buf, c) < 0)
- goto bail;
- bytes_skipped += c;
+ hex_hash[2*cnt ] = bin2hex[hash[cnt] >> 4];
+ hex_hash[2*cnt+1] = bin2hex[hash[cnt] & 0xf];
}
- while (c > 0);
- lseek (fd, start+bytes_skipped, SEEK_SET);
-
- done:
- free (buf);
- return FcTrue;
-
- bail:
- free (buf);
- return FcFalse;
+ hex_hash[2*cnt] = 0;
+ strcat ((char *) cache_base, "-" FC_ARCHITECTURE FC_CACHE_SUFFIX);
+
+ return cache_base;
}
FcBool
-FcDirCacheValid (const FcChar8 *dir)
+FcDirCacheUnlink (const FcChar8 *dir, FcConfig *config)
{
- FcChar8 *cache_file = FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
- struct stat file_stat, dir_stat;
+ FcChar8 *cache_hashed = NULL;
+ FcChar8 cache_base[CACHEBASE_LEN];
+ FcStrList *list;
+ FcChar8 *cache_dir;
- if (stat ((char *) dir, &dir_stat) < 0)
- {
- FcStrFree (cache_file);
+ FcDirCacheBasename (dir, cache_base);
+
+ list = FcStrListCreate (config->cacheDirs);
+ if (!list)
return FcFalse;
- }
- if (stat ((char *) cache_file, &file_stat) < 0)
+
+ while ((cache_dir = FcStrListNext (list)))
{
- FcStrFree (cache_file);
- return FcFalse;
+ cache_hashed = FcStrPlus (cache_dir, cache_base);
+ if (!cache_hashed)
+ break;
+ (void) unlink ((char *) cache_hashed);
}
- FcStrFree (cache_file);
- /*
- * If the directory has been modified more recently than
- * the cache file, the cache is not valid
- */
- if (dir_stat.st_mtime - file_stat.st_mtime > 0)
- return FcFalse;
+ FcStrListDone (list);
+ /* return FcFalse if something went wrong */
+ if (cache_dir)
+ return FcFalse;
return FcTrue;
}
static int
-FcCacheReadDirs (FcConfig * config, FcGlobalCache * cache,
- FcStrList *list, FcFontSet * set)
+FcCacheReadDirs (FcConfig * config,
+ FcStrList *list, FcFontSet * set, FcStrSet *processed_dirs)
{
- DIR *d;
- struct dirent *e;
int ret = 0;
FcChar8 *dir;
- FcChar8 *file, *base;
FcStrSet *subdirs;
FcStrList *sublist;
- struct stat statb;
/*
- * Now scan all of the directories into separate databases
- * and write out the results
+ * Read in the results from 'list'.
*/
while ((dir = FcStrListNext (list)))
{
- /* freed below */
- file = (FcChar8 *) malloc (strlen ((char *) dir) + 1 + FC_MAX_FILE_LEN + 1);
- if (!file)
- return FcFalse;
+ 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.
+ */
- strcpy ((char *) file, (char *) dir);
- strcat ((char *) file, "/");
- base = file + strlen ((char *) file);
+ 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++;
- free (file);
continue;
}
- if (access ((char *) dir, X_OK) < 0)
- {
- switch (errno) {
- case ENOENT:
- case ENOTDIR:
- case EACCES:
- break;
- default:
- fprintf (stderr, "\"%s\": ", dir);
- perror ("");
- ret++;
- }
- FcStrSetDestroy (subdirs);
- free (file);
- continue;
- }
- if (stat ((char *) dir, &statb) == -1)
- {
- fprintf (stderr, "\"%s\": ", dir);
- perror ("");
- FcStrSetDestroy (subdirs);
- ret++;
- free (file);
- continue;
- }
- if (!S_ISDIR (statb.st_mode))
- {
- fprintf (stderr, "\"%s\": not a directory, skipping\n", dir);
- FcStrSetDestroy (subdirs);
- free (file);
- continue;
- }
- d = opendir ((char *) dir);
- if (!d)
- {
- FcStrSetDestroy (subdirs);
- free (file);
- continue;
- }
- while ((e = readdir (d)))
- {
- if (e->d_name[0] != '.' && strlen (e->d_name) < FC_MAX_FILE_LEN)
- {
- strcpy ((char *) base, (char *) e->d_name);
- if (FcFileIsDir (file) && !FcStrSetAdd (subdirs, file))
- ret++;
- }
- }
- closedir (d);
- if (!FcDirCacheValid (dir) || !FcDirCacheRead (set, dir))
- {
- if (FcDebug () & FC_DBG_FONTSET)
- printf ("scan dir %s\n", dir);
- FcDirScanConfig (set, subdirs, cache,
- config->blanks, dir, FcFalse, config);
- }
+ 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++;
- free (file);
continue;
}
- ret += FcCacheReadDirs (config, cache, sublist, set);
- free (file);
+ ret += FcCacheReadDirs (config, sublist, set, processed_dirs);
}
FcStrListDone (list);
return ret;
}
FcFontSet *
-FcCacheRead (FcConfig *config, FcGlobalCache * cache)
+FcCacheRead (FcConfig *config)
{
- FcFontSet * s = FcFontSetCreate();
+ FcFontSet *s = FcFontSetCreate();
+ FcStrSet *processed_dirs;
+
if (!s)
return 0;
- if (force)
+ processed_dirs = FcStrSetCreate();
+ if (!processed_dirs)
goto bail;
- if (FcCacheReadDirs (config, cache, FcConfigGetConfigDirs (config), s))
- 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;
}
+/* 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 FILE *
+FcDirCacheOpen (FcConfig *config, const FcChar8 *dir, FcChar8 **cache_path)
+{
+ FILE *file = NULL;
+ FcChar8 *cache_hashed = NULL;
+ FcChar8 cache_base[CACHEBASE_LEN];
+ FcStrList *list;
+ FcChar8 *cache_dir;
+ struct stat file_stat, dir_stat;
+
+ if (stat ((char *) dir, &dir_stat) < 0)
+ return NULL;
+
+ FcDirCacheBasename (dir, cache_base);
+
+ list = FcStrListCreate (config->cacheDirs);
+ if (!list)
+ return NULL;
+
+ while ((cache_dir = FcStrListNext (list)))
+ {
+ cache_hashed = FcStrPlus (cache_dir, cache_base);
+ if (!cache_hashed)
+ break;
+ file = fopen((char *) cache_hashed, "rb");
+ if (file != NULL) {
+ if (fstat (fileno (file), &file_stat) >= 0 &&
+ dir_stat.st_mtime <= file_stat.st_mtime)
+ {
+ break;
+ }
+ fclose (file);
+ file = NULL;
+ }
+ FcStrFree (cache_hashed);
+ cache_hashed = NULL;
+ }
+ FcStrListDone (list);
+
+ if (file == NULL)
+ return NULL;
+
+ if (cache_path)
+ *cache_path = cache_hashed;
+ else
+ FcStrFree (cache_hashed);
+
+ return file;
+}
+
/* read serialized state from the cache file */
FcBool
-FcDirCacheRead (FcFontSet * set, const FcChar8 *dir)
+FcDirCacheRead (FcFontSet * set, FcStrSet * dirs,
+ const FcChar8 *dir, FcConfig *config)
{
- FcChar8 *cache_file = FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
- int fd;
- FcCache metadata;
- void * current_dir_block;
- char * current_arch_machine_name;
- char candidate_arch_machine_name[9+MACHINE_SIGNATURE_SIZE];
- off_t current_arch_start = 0;
-
- if (force)
- goto bail;
- if (!cache_file)
- goto bail;
-
- current_arch_machine_name = FcCacheProduceMachineSignature();
- fd = open(cache_file, O_RDONLY);
- if (fd == -1)
- goto bail;
+ FILE *file;
+ FcCache metadata;
+ void *current_dir_block;
+ char subdir_name[FC_MAX_FILE_LEN + 1 + 12 + 1];
- current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name);
- if (current_arch_start < 0)
- goto bail1;
+ file = FcDirCacheOpen (config, dir, NULL);
+ if (file == NULL)
+ goto bail;
- lseek (fd, current_arch_start, SEEK_SET);
- if (FcCacheReadString2 (fd, candidate_arch_machine_name,
- sizeof (candidate_arch_machine_name)) == 0)
+ if (fread(&metadata, sizeof(FcCache), 1, file) != 1)
goto bail1;
-
- // sanity check for endianness issues
- read(fd, &metadata, sizeof(FcCache));
if (metadata.magic != FC_CACHE_MAGIC)
goto bail1;
- if (!metadata.count)
- goto bail1;
+ while (FcCacheReadString (file, subdir_name, sizeof (subdir_name)) &&
+ strlen (subdir_name) > 0)
+ FcStrSetAdd (dirs, (FcChar8 *)subdir_name);
- off_t pos = FcCacheNextOffset (lseek(fd, 0, SEEK_CUR));
- current_dir_block = mmap (0, metadata.count,
- PROT_READ, MAP_SHARED, fd, pos);
- if (current_dir_block == MAP_FAILED)
- perror("");
-
- if (!FcFontSetUnserialize (metadata, set, current_dir_block))
- goto bail1;
-
- close(fd);
- free (cache_file);
+ if (metadata.count)
+ {
+ int fd = fileno (file);
+#if defined(HAVE_MMAP) || defined(__CYGWIN__)
+ current_dir_block = mmap (0, metadata.count,
+ PROT_READ, MAP_SHARED, fd, metadata.pos);
+ if (current_dir_block == MAP_FAILED)
+ goto bail1;
+#elif defined(_WIN32)
+ {
+ HANDLE hFileMap;
+
+ hFileMap = CreateFileMapping((HANDLE) _get_osfhandle(fd), NULL, PAGE_READONLY, 0, 0, NULL);
+ if (hFileMap == NULL)
+ goto bail1;
+
+ current_dir_block = MapViewOfFile (hFileMap, FILE_MAP_READ, 0, metadata.pos, metadata.count);
+ if (current_dir_block == NULL)
+ {
+ CloseHandle (hFileMap);
+ goto bail1;
+ }
+ }
+#else
+ if (lseek (fd, metatdata.pos, SEEK_SET) == -1)
+ goto bail1;
+
+ current_dir_block = malloc (metadata.count);
+ if (!current_dir_block)
+ goto bail1;
+
+ /* could also use CreateMappedViewOfFile under MinGW... */
+ if (read (fd, current_dir_block, metadata.count) != metadata.count)
+ {
+ free (current_dir_block);
+ goto bail1;
+ }
+#endif
+ FcCacheAddBankDir (metadata.bank, (char *) dir);
+ if (!FcFontSetUnserialize (&metadata, set, current_dir_block))
+ goto bail1;
+ }
+ if (config)
+ FcConfigAddFontDir (config, (FcChar8 *)dir);
+
+ fclose(file);
return FcTrue;
bail1:
- close(fd);
+ fclose (file);
bail:
- free (cache_file);
return FcFalse;
}
-/* write serialized state to the cache file */
-FcBool
-FcDirCacheWrite (int bank, FcFontSet *set, const FcChar8 *dir)
+static void *
+FcDirCacheProduce (FcFontSet *set, FcCache *metadata)
{
- FcChar8 *cache_file = FcStrPlus (dir, (FcChar8 *) "/" FC_DIR_CACHE_FILE);
- int fd, bytes_to_write, metadata_bytes;
- FcCache metadata;
- off_t current_arch_start = 0, truncate_to;
- char * current_arch_machine_name, * header;
- void * current_dir_block, *final_dir_block;
+ void * current_dir_block, * final_dir_block;
+ static unsigned int rand_state = 0;
+ int bank, needed_bytes_no_align;
+
+#if defined (HAVE_RAND_R)
+ if (!rand_state)
+ rand_state = time(0L);
+ bank = rand_r(&rand_state);
+
+ while (FcCacheHaveBank(bank))
+ bank = rand_r(&rand_state);
+#else
+ if (!rand_state)
+ {
+ rand_state = 1;
+ srand (time (0L));
+ }
+ bank = rand();
- if (!cache_file)
- goto bail;
+ while (FcCacheHaveBank(bank))
+ bank = rand();
+#endif
+ memset (metadata, 0, sizeof(FcCache));
FcFontSetNewBank();
- bytes_to_write = FcFontSetNeededBytes (set);
- metadata_bytes = FcCacheNextOffset (sizeof (FcCache));
+ needed_bytes_no_align = FcFontSetNeededBytes (set);
+ metadata->count = needed_bytes_no_align +
+ FcFontSetNeededBytesAlign ();
+ metadata->magic = FC_CACHE_MAGIC;
+ metadata->bank = bank;
- if (!bytes_to_write)
+ if (!needed_bytes_no_align) /* not a failure, no fonts to write */
{
- unlink (cache_file);
- free (cache_file);
- return FcTrue;
+ /* no, you don't really need to write any bytes at all. */
+ metadata->count = 0;
+ return 0;
}
- current_dir_block = malloc (bytes_to_write);
- memset (&metadata, 0, sizeof(FcCache));
- metadata.count = bytes_to_write;
- metadata.bank = bank;
+ current_dir_block = malloc (metadata->count);
if (!current_dir_block)
goto bail;
- final_dir_block = FcFontSetDistributeBytes (&metadata, current_dir_block);
+ /* shut up valgrind */
+ memset (current_dir_block, 0, metadata->count);
+ final_dir_block = FcFontSetDistributeBytes (metadata, current_dir_block);
- if ((char *)current_dir_block + bytes_to_write != final_dir_block)
+ if ((void *)((char *)current_dir_block+metadata->count) < final_dir_block)
goto bail;
if (!FcFontSetSerialize (bank, set))
goto bail;
- if (FcDebug () & FC_DBG_CACHE)
- printf ("FcDirCacheWriteDir cache_file \"%s\"\n", cache_file);
+ return current_dir_block;
- fd = open(cache_file, O_RDWR | O_CREAT, 0666);
- if (fd == -1)
- goto bail;
+ bail:
+ free (current_dir_block);
+ return 0;
+}
- current_arch_machine_name = FcCacheProduceMachineSignature ();
- current_arch_start = FcCacheSkipToArch(fd, current_arch_machine_name);
- if (current_arch_start < 0)
- current_arch_start = FcCacheNextOffset (lseek(fd, 0, SEEK_END));
+static FcBool
+FcMakeDirectory (const FcChar8 *dir)
+{
+ 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;
+}
- if (!FcCacheMoveDown(fd, current_arch_start))
- goto bail1;
+/* write serialized state to the cache file */
+FcBool
+FcDirCacheWrite (FcFontSet *set, FcStrSet *dirs, const FcChar8 *dir, FcConfig *config)
+{
+ FcChar8 cache_base[CACHEBASE_LEN];
+ FcChar8 *cache_hashed;
+ int fd, i;
+ FcAtomic *atomic;
+ FcCache metadata;
+ void *current_dir_block = 0;
+ FcStrList *list;
+ FcChar8 *cache_dir = NULL;
+ FcChar8 *test_dir;
+ off_t header_len;
- current_arch_start = lseek(fd, 0, SEEK_CUR);
- if (ftruncate (fd, current_arch_start) == -1)
- goto bail1;
+ /*
+ * Write it to the first directory in the list which is writable
+ */
+
+ list = FcStrListCreate (config->cacheDirs);
+ if (!list)
+ return FcFalse;
+ while ((test_dir = FcStrListNext (list))) {
+ if (access ((char *) test_dir, W_OK|X_OK) == 0)
+ {
+ 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;
+ FcDirCacheBasename (dir, cache_base);
+ cache_hashed = FcStrPlus (cache_dir, cache_base);
+ if (!cache_hashed)
+ return FcFalse;
- /* now write the address of the next offset */
- truncate_to = FcCacheNextOffset (FcCacheNextOffset (current_arch_start + metadata_bytes) + bytes_to_write) - current_arch_start;
+ current_dir_block = FcDirCacheProduce (set, &metadata);
- header = malloc (10 + strlen (current_arch_machine_name));
- sprintf (header, "%8x ", (int)truncate_to);
- strcat (header, current_arch_machine_name);
- if (!FcCacheWriteString2 (fd, header))
+ if (metadata.count && !current_dir_block)
goto bail1;
- metadata.magic = FC_CACHE_MAGIC;
- write (fd, &metadata, sizeof(FcCache));
- lseek (fd, FcCacheNextOffset (lseek(fd, 0, SEEK_END)), SEEK_SET);
- write (fd, current_dir_block, bytes_to_write);
+ if (FcDebug () & FC_DBG_CACHE)
+ printf ("FcDirCacheWriteDir dir \"%s\" file \"%s\"\n",
+ dir, cache_hashed);
- /* this actually serves to pad out the cache file, if needed */
- if (ftruncate (fd, current_arch_start + truncate_to) == -1)
+ atomic = FcAtomicCreate ((FcChar8 *)cache_hashed);
+ if (!atomic)
goto bail1;
+ if (!FcAtomicLock (atomic))
+ goto bail2;
+
+ fd = open((char *)FcAtomicNewFile (atomic), O_RDWR | O_CREAT | O_BINARY, 0666);
+ if (fd == -1)
+ goto bail3;
+
+ /*
+ * Compute file header length -- the FcCache followed by the subdir names
+ */
+ header_len = sizeof (FcCache);
+ for (i = 0; i < dirs->size; i++)
+ header_len += strlen ((char *)dirs->strs[i]) + 1;
+
+ metadata.pos = FcCacheNextOffset (lseek (fd, 0, SEEK_CUR) + header_len);
+ metadata.subdirs = dirs->size;
+
+ /*
+ * Write out the header
+ */
+ if (write (fd, &metadata, sizeof(FcCache)) != sizeof(FcCache))
+ {
+ perror("write metadata");
+ goto bail5;
+ }
+
+ for (i = 0; i < dirs->size; i++)
+ FcCacheWriteString (fd, (char *)dirs->strs[i]);
+
+ if (metadata.count)
+ {
+ if (lseek (fd, metadata.pos, SEEK_SET) != metadata.pos)
+ perror("lseek");
+ else if (write (fd, current_dir_block, metadata.count) !=
+ metadata.count)
+ perror("write current_dir_block");
+ free (current_dir_block);
+ current_dir_block = 0;
+ }
+
close(fd);
+ if (!FcAtomicReplaceOrig(atomic))
+ goto bail3;
+ FcStrFree ((FcChar8 *)cache_hashed);
+ FcAtomicUnlock (atomic);
+ FcAtomicDestroy (atomic);
return FcTrue;
+ bail5:
+ close (fd);
+ bail3:
+ FcAtomicUnlock (atomic);
+ bail2:
+ FcAtomicDestroy (atomic);
bail1:
- free (current_dir_block);
- free (current_arch_machine_name);
- bail:
- unlink (cache_file);
- free (cache_file);
+ FcStrFree ((FcChar8 *)cache_hashed);
+ if (current_dir_block)
+ free (current_dir_block);
return FcFalse;
}
-static char *
-FcCacheProduceMachineSignature ()
-{
- static char buf[MACHINE_SIGNATURE_SIZE];
- int magic = ENDIAN_TEST;
- char * m = (char *)&magic;
-
- sprintf (buf, "%2x%2x%2x%2x "
- "%4x %4x %4x %4x %4x %4x %4x %4x %4x %4x %4x %4x "
- "%4x %4x %4x %4x %4x %4x %4x\n",
- m[0], m[1], m[2], m[3],
- sizeof (char),
- sizeof (char *),
- sizeof (int),
- sizeof (FcPattern),
- sizeof (FcPatternEltPtr),
- sizeof (struct _FcPatternElt *),
- sizeof (FcPatternElt),
- sizeof (FcObjectPtr),
- sizeof (FcValueListPtr),
- sizeof (FcValue),
- sizeof (FcValueBinding),
- sizeof (struct _FcValueList *),
- sizeof (FcCharSet),
- sizeof (FcCharLeaf **),
- sizeof (FcChar16 *),
- sizeof (FcChar16),
- sizeof (FcCharLeaf),
- sizeof (FcChar32),
- sizeof (FcCache));
-
- return buf;
-}
-
-/* if true, ignore the cache file */
-void
-FcCacheForce (FcBool f)
-{
- force = f;
-}
-
static int banks_ptr = 0, banks_alloc = 0;
-static int * bankId = 0;
-
-int
-FcCacheBankCount (void)
-{
- return banks_ptr;
-}
+int * _fcBankId = 0, * _fcBankIdx = 0;
+static const char ** bankDirs = 0;
-FcBool
+static FcBool
FcCacheHaveBank (int bank)
{
int i;
return FcTrue;
for (i = 0; i < banks_ptr; i++)
- if (bankId[i] == bank)
+ if (_fcBankId[i] == bank)
return FcTrue;
return FcFalse;
}
int
-FcCacheBankToIndex (int bank)
+FcCacheBankToIndexMTF (int bank)
{
- static int lastBank = FC_BANK_DYNAMIC, lastIndex = -1;
- int i;
- int * b;
-
- if (bank == lastBank)
- return lastIndex;
+ int i, j;
for (i = 0; i < banks_ptr; i++)
- if (bankId[i] == bank)
- return i;
+ if (_fcBankId[_fcBankIdx[i]] == bank)
+ {
+ int t = _fcBankIdx[i];
+
+ for (j = i; j > 0; j--)
+ _fcBankIdx[j] = _fcBankIdx[j-1];
+ _fcBankIdx[0] = t;
+ return t;
+ }
if (banks_ptr >= banks_alloc)
{
- b = realloc (bankId, (banks_alloc + 4) * sizeof(int));
+ int * b, * bidx;
+ const char ** bds;
+
+ b = realloc (_fcBankId, (banks_alloc + 4) * sizeof(int));
if (!b)
return -1;
+ _fcBankId = b;
+
+ bidx = realloc (_fcBankIdx, (banks_alloc + 4) * sizeof(int));
+ if (!bidx)
+ return -1;
+ _fcBankIdx = bidx;
+
+ bds = realloc (bankDirs, (banks_alloc + 4) * sizeof (char *));
+ if (!bds)
+ return -1;
+ bankDirs = bds;
- bankId = b;
banks_alloc += 4;
}
i = banks_ptr++;
- bankId[i] = bank;
+ _fcBankId[i] = bank;
+ _fcBankIdx[i] = i;
return i;
}
+
+static void
+FcCacheAddBankDir (int bank, const char * dir)
+{
+ int bi = FcCacheBankToIndexMTF (bank);
+
+ if (bi < 0)
+ return;
+
+ bankDirs[bi] = (const char *)FcStrCopy ((FcChar8 *)dir);
+}
+
+const char *
+FcCacheFindBankDir (int bank)
+{
+ int bi = FcCacheBankToIndex (bank);
+ return bankDirs[bi];
+}
+
+/*
+ * 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)
+{
+ 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
+
+/*
+ * 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;
+
+ 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;
+ }
+ memcpy(p, buf, t);
+ byteReverse(ctx->in, 16);
+ MD5Transform(ctx->buf, (FcChar32 *) ctx->in);
+ buf += t;
+ len -= t;
+ }
+ /* 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;
+ }
+
+ /* Handle any remaining bytes of data. */
+
+ memcpy(ctx->in, buf, len);
+}
+
+/*
+ * 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)
+{
+ 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);
+ }
+ 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