/usr/share/php/Doctrine/Common/Cache/FileCache.php is in php-doctrine-cache 1.3.1-1+deb8u1.
This file is owned by root:root, with mode 0o644.
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/*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the MIT license. For more information, see
* <http://www.doctrine-project.org>.
*/
namespace Doctrine\Common\Cache;
/**
* Base file cache driver.
*
* @since 2.3
* @author Fabio B. Silva <fabio.bat.silva@gmail.com>
*/
abstract class FileCache extends CacheProvider
{
/**
* The cache directory.
*
* @var string
*/
protected $directory;
/**
* The cache file extension.
*
* @var string|null
*/
protected $extension;
/**
* @var int
*/
protected $umask;
/**
* Constructor.
*
* @param string $directory The cache directory.
* @param string|null $extension The cache file extension.
* @param int $umask
*
* @throws \InvalidArgumentException
*/
public function __construct($directory, $extension = null, $umask = 0002)
{
if (!is_int($umask)) {
throw new \InvalidArgumentException(sprintf(
"Umask is required to be integer, was: %s",
gettype($umask)
));
}
$this->umask = $umask;
if ( ! is_dir($directory) && ! @mkdir($directory, 0777 & ~$umask, true)) {
throw new \InvalidArgumentException(sprintf(
'The directory "%s" does not exist and could not be created.',
$directory
));
}
if ( ! is_writable($directory)) {
throw new \InvalidArgumentException(sprintf(
'The directory "%s" is not writable.',
$directory
));
}
$this->directory = realpath($directory);
$this->extension = $extension ?: $this->extension;
}
/**
* Gets the cache directory.
*
* @return string
*/
public function getDirectory()
{
return $this->directory;
}
/**
* Gets the cache file extension.
*
* @return string|null
*/
public function getExtension()
{
return $this->extension;
}
/**
* @param string $id
*
* @return string
*/
protected function getFilename($id)
{
$hash = hash('sha256', $id);
$path = implode(str_split($hash, 16), DIRECTORY_SEPARATOR);
$path = $this->directory . DIRECTORY_SEPARATOR . $path;
$id = preg_replace('@[\\\/:"*?<>|]+@', '', $id);
return $path . DIRECTORY_SEPARATOR . $id . $this->extension;
}
/**
* {@inheritdoc}
*/
protected function doDelete($id)
{
return @unlink($this->getFilename($id));
}
/**
* {@inheritdoc}
*/
protected function doFlush()
{
foreach ($this->getIterator() as $name => $file) {
@unlink($name);
}
return true;
}
/**
* {@inheritdoc}
*/
protected function doGetStats()
{
$usage = 0;
foreach ($this->getIterator() as $file) {
$usage += $file->getSize();
}
$free = disk_free_space($this->directory);
return array(
Cache::STATS_HITS => null,
Cache::STATS_MISSES => null,
Cache::STATS_UPTIME => null,
Cache::STATS_MEMORY_USAGE => $usage,
Cache::STATS_MEMORY_AVAILABLE => $free,
);
}
/**
* @return \Iterator
*/
private function getIterator()
{
$pattern = '/^.+\\' . $this->extension . '$/i';
$iterator = new \RecursiveDirectoryIterator($this->directory);
$iterator = new \RecursiveIteratorIterator($iterator);
return new \RegexIterator($iterator, $pattern);
}
}
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