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Fallback uuid-based name to read a cache if no MD5-based cache available

This commit is contained in:
Akira TAGOH 2019-04-04 10:59:47 +00:00
parent 13d2a47d79
commit 7f61838435
2 changed files with 113 additions and 3 deletions
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91
src/fccache.c
View File

@ -196,7 +196,7 @@ FcDirCacheBasenameMD5 (FcConfig *config, const FcChar8 *dir, FcChar8 cache_base[
strcat ((char *) cache_base, "-" FC_ARCHITECTURE FC_CACHE_SUFFIX);
if (FcDebug() & FC_DBG_CACHE)
{
printf ("cache: %s (dir: %s%s%s%s, salt: %s)\n", cache_base, orig_dir ? orig_dir : dir, new_dir ? " (mapped to " : "", new_dir ? (char *)new_dir : "", new_dir ? ")" : "", salt);
printf ("cache: %s (dir: %s%s%s%s%s%s)\n", cache_base, orig_dir ? orig_dir : dir, new_dir ? " (mapped to " : "", new_dir ? (char *)new_dir : "", new_dir ? ")" : "", salt ? ", salt: " : "", salt ? (char *)salt : "");
}
if (new_dir)
@ -205,16 +205,74 @@ FcDirCacheBasenameMD5 (FcConfig *config, const FcChar8 *dir, FcChar8 cache_base[
return cache_base;
}
#ifndef _WIN32
static FcChar8 *
FcDirCacheBasenameUUID (FcConfig *config, const FcChar8 *dir, FcChar8 cache_base[CACHEBASE_LEN])
{
FcChar8 *new_dir = NULL;
FcChar8 *target, *fuuid;
const FcChar8 *sysroot = FcConfigGetSysRoot (config);
const FcChar8 *salt, *orig_dir = NULL;
int fd;
salt = FcConfigMapSalt (config, dir);
new_dir = FcConfigMapFontPath (config, dir);
if (new_dir)
{
orig_dir = dir;
dir = new_dir;
}
cache_base[0] = 0;
if (sysroot)
target = FcStrBuildFilename (sysroot, dir, NULL);
else
target = FcStrdup (dir);
fuuid = FcStrBuildFilename (target, ".uuid", NULL);
if ((fd = FcOpen ((char *) fuuid, O_RDONLY)) != -1)
{
char suuid[37];
ssize_t len;
memset (suuid, 0, sizeof (suuid));
len = read (fd, suuid, 36);
suuid[36] = 0;
close (fd);
if (len < 0)
goto bail;
cache_base[0] = '/';
strcpy ((char *)&cache_base[1], suuid);
strcat ((char *) cache_base, "-" FC_ARCHITECTURE FC_CACHE_SUFFIX);
if (FcDebug () & FC_DBG_CACHE)
{
printf ("cache fallbacks to: %s (dir: %s%s%s%s%s)\n", cache_base, orig_dir ? orig_dir : dir, new_dir ? " (mapped to " : "", new_dir ? (char *)new_dir : "", new_dir ? ")" : "", salt ? ", salt was ignored" : "");
}
}
bail:
if (new_dir)
FcStrFree (new_dir);
FcStrFree (fuuid);
FcStrFree (target);
return cache_base;
}
#endif
FcBool
FcDirCacheUnlink (const FcChar8 *dir, FcConfig *config)
{
FcChar8 *cache_hashed = NULL;
FcChar8 cache_base[CACHEBASE_LEN];
#ifndef _WIN32
FcChar8 uuid_cache_base[CACHEBASE_LEN];
#endif
FcStrList *list;
FcChar8 *cache_dir;
const FcChar8 *sysroot = FcConfigGetSysRoot (config);
FcDirCacheBasenameMD5 (config, dir, cache_base);
#ifndef _WIN32
FcDirCacheBasenameUUID (config, dir, uuid_cache_base);
#endif
list = FcStrListCreate (config->cacheDirs);
if (!list)
@ -229,10 +287,23 @@ FcDirCacheUnlink (const FcChar8 *dir, FcConfig *config)
if (!cache_hashed)
break;
(void) unlink ((char *) cache_hashed);
FcDirCacheDeleteUUID (dir, config);
FcStrFree (cache_hashed);
#ifndef _WIN32
if (uuid_cache_base[0] != 0)
{
if (sysroot)
cache_hashed = FcStrBuildFilename (sysroot, cache_dir, uuid_cache_base, NULL);
else
cache_hashed = FcStrBuildFilename (cache_dir, uuid_cache_base, NULL);
if (!cache_hashed)
break;
(void) unlink ((char *) cache_hashed);
FcStrFree (cache_hashed);
}
#endif
}
FcStrListDone (list);
FcDirCacheDeleteUUID (dir, config);
/* return FcFalse if something went wrong */
if (cache_dir)
return FcFalse;
@ -300,7 +371,11 @@ FcDirCacheProcess (FcConfig *config, const FcChar8 *dir,
while ((cache_dir = FcStrListNext (list)))
{
FcChar8 *cache_hashed;
#ifndef _WIN32
FcBool retried = FcFalse;
retry:
#endif
if (sysroot)
cache_hashed = FcStrBuildFilename (sysroot, cache_dir, cache_base, NULL);
else
@ -320,6 +395,18 @@ FcDirCacheProcess (FcConfig *config, const FcChar8 *dir,
break;
}
}
#ifndef _WIN32
else if (!retried)
{
retried = FcTrue;
FcDirCacheBasenameUUID (config, dir, cache_base);
if (cache_base[0] != 0)
{
FcStrFree (cache_hashed);
goto retry;
}
}
#endif
FcStrFree (cache_hashed);
}
FcStrListDone (list);

25
test/run-test.sh
View File

@ -236,7 +236,6 @@ mkdir -p $TESTTMPDIR/cache.dir
sed "s!@FONTDIR@!$TESTTMPDIR/fonts!
s!@REMAPDIR@!<remap-dir as-path="'"'"$FONTDIR"'"'">$TESTTMPDIR/fonts</remap-dir>!
s!@CACHEDIR@!$TESTTMPDIR/cache.dir!" < $TESTDIR/fonts.conf.in > bind-fonts.conf
cat bind-fonts.conf
$BWRAP --bind / / --bind $FONTDIR $TESTTMPDIR/fonts --bind .. $TESTTMPDIR/build --dev-bind /dev /dev --setenv FONTCONFIG_FILE $TESTTMPDIR/build/test/bind-fonts.conf $TESTTMPDIR/build/fc-cache/fc-cache$EXEEXT $TESTTMPDIR/fonts
(cd $TESTTMPDIR/cache.dir; ls -1 --color=no *cache*) > out2
if cmp out1 out2 > /dev/null ; then : ; else
@ -277,6 +276,30 @@ fi
rm -rf $MyPWD/sysroot
dotest "Fallback to uuid"
prep
cp $FONT1 $FONTDIR
touch -d @`stat -c %Y $FONTDIR` $FONTDIR
$FCCACHE $FONTDIR
_cache=`ls -1 --color=no $CACHEDIR/*cache*`
_mtime=`stat -c %Y $FONTDIR`
_uuid=`uuidgen`
_newcache=`echo $_cache | sed "s/\([0-9a-f]*\)\(\-.*\)/$_uuid\2/"`
mv $_cache $_newcache
echo $_uuid > $FONTDIR/.uuid
touch -d @$_mtime $FONTDIR
$FCCACHE $FONTDIR
_cache2=`ls -1 --color=no $CACHEDIR/*cache*`
if [ "x$_cache2" != "x$_newcache" ]; then
echo "*** Test failed: $TEST"
echo "Cache wasn't fallen back."
echo "Expected result:"
echo $_newcache
echo "Actual result:"
echo $_cache2
exit 1
fi
fi # if [ "x$EXEEXT" = "x" ]
rm -rf $FONTDIR $CACHEFILE $CACHEDIR $BASEDIR $FONTCONFIG_FILE out