/home/kueuepay/www/vendor/ezyang/htmlpurifier/library/HTMLPurifier/DefinitionCache/Serializer.php
<?php
class HTMLPurifier_DefinitionCache_Serializer extends HTMLPurifier_DefinitionCache
{
/**
* @param HTMLPurifier_Definition $def
* @param HTMLPurifier_Config $config
* @return int|bool
*/
public function add($def, $config)
{
if (!$this->checkDefType($def)) {
return;
}
$file = $this->generateFilePath($config);
if (file_exists($file)) {
return false;
}
if (!$this->_prepareDir($config)) {
return false;
}
return $this->_write($file, serialize($def), $config);
}
/**
* @param HTMLPurifier_Definition $def
* @param HTMLPurifier_Config $config
* @return int|bool
*/
public function set($def, $config)
{
if (!$this->checkDefType($def)) {
return;
}
$file = $this->generateFilePath($config);
if (!$this->_prepareDir($config)) {
return false;
}
return $this->_write($file, serialize($def), $config);
}
/**
* @param HTMLPurifier_Definition $def
* @param HTMLPurifier_Config $config
* @return int|bool
*/
public function replace($def, $config)
{
if (!$this->checkDefType($def)) {
return;
}
$file = $this->generateFilePath($config);
if (!file_exists($file)) {
return false;
}
if (!$this->_prepareDir($config)) {
return false;
}
return $this->_write($file, serialize($def), $config);
}
/**
* @param HTMLPurifier_Config $config
* @return bool|HTMLPurifier_Config
*/
public function get($config)
{
$file = $this->generateFilePath($config);
if (!file_exists($file)) {
return false;
}
return unserialize(file_get_contents($file));
}
/**
* @param HTMLPurifier_Config $config
* @return bool
*/
public function remove($config)
{
$file = $this->generateFilePath($config);
if (!file_exists($file)) {
return false;
}
return unlink($file);
}
/**
* @param HTMLPurifier_Config $config
* @return bool
*/
public function flush($config)
{
if (!$this->_prepareDir($config)) {
return false;
}
$dir = $this->generateDirectoryPath($config);
$dh = opendir($dir);
// Apparently, on some versions of PHP, readdir will return
// an empty string if you pass an invalid argument to readdir.
// So you need this test. See #49.
if (false === $dh) {
return false;
}
while (false !== ($filename = readdir($dh))) {
if (empty($filename)) {
continue;
}
if ($filename[0] === '.') {
continue;
}
unlink($dir . '/' . $filename);
}
closedir($dh);
return true;
}
/**
* @param HTMLPurifier_Config $config
* @return bool
*/
public function cleanup($config)
{
if (!$this->_prepareDir($config)) {
return false;
}
$dir = $this->generateDirectoryPath($config);
$dh = opendir($dir);
// See #49 (and above).
if (false === $dh) {
return false;
}
while (false !== ($filename = readdir($dh))) {
if (empty($filename)) {
continue;
}
if ($filename[0] === '.') {
continue;
}
$key = substr($filename, 0, strlen($filename) - 4);
if ($this->isOld($key, $config)) {
unlink($dir . '/' . $filename);
}
}
closedir($dh);
return true;
}
/**
* Generates the file path to the serial file corresponding to
* the configuration and definition name
* @param HTMLPurifier_Config $config
* @return string
* @todo Make protected
*/
public function generateFilePath($config)
{
$key = $this->generateKey($config);
return $this->generateDirectoryPath($config) . '/' . $key . '.ser';
}
/**
* Generates the path to the directory contain this cache's serial files
* @param HTMLPurifier_Config $config
* @return string
* @note No trailing slash
* @todo Make protected
*/
public function generateDirectoryPath($config)
{
$base = $this->generateBaseDirectoryPath($config);
return $base . '/' . $this->type;
}
/**
* Generates path to base directory that contains all definition type
* serials
* @param HTMLPurifier_Config $config
* @return mixed|string
* @todo Make protected
*/
public function generateBaseDirectoryPath($config)
{
$base = $config->get('Cache.SerializerPath');
$base = is_null($base) ? HTMLPURIFIER_PREFIX . '/HTMLPurifier/DefinitionCache/Serializer' : $base;
return $base;
}
/**
* Convenience wrapper function for file_put_contents
* @param string $file File name to write to
* @param string $data Data to write into file
* @param HTMLPurifier_Config $config
* @return int|bool Number of bytes written if success, or false if failure.
*/
private function _write($file, $data, $config)
{
$result = file_put_contents($file, $data);
if ($result !== false) {
// set permissions of the new file (no execute)
$chmod = $config->get('Cache.SerializerPermissions');
if ($chmod !== null) {
chmod($file, $chmod & 0666);
}
}
return $result;
}
/**
* Prepares the directory that this type stores the serials in
* @param HTMLPurifier_Config $config
* @return bool True if successful
*/
private function _prepareDir($config)
{
$directory = $this->generateDirectoryPath($config);
$chmod = $config->get('Cache.SerializerPermissions');
if ($chmod === null) {
if (!@mkdir($directory) && !is_dir($directory)) {
trigger_error(
'Could not create directory ' . $directory . '',
E_USER_WARNING
);
return false;
}
return true;
}
if (!is_dir($directory)) {
$base = $this->generateBaseDirectoryPath($config);
if (!is_dir($base)) {
trigger_error(
'Base directory ' . $base . ' does not exist,
please create or change using %Cache.SerializerPath',
E_USER_WARNING
);
return false;
} elseif (!$this->_testPermissions($base, $chmod)) {
return false;
}
if (!@mkdir($directory, $chmod) && !is_dir($directory)) {
trigger_error(
'Could not create directory ' . $directory . '',
E_USER_WARNING
);
return false;
}
if (!$this->_testPermissions($directory, $chmod)) {
return false;
}
} elseif (!$this->_testPermissions($directory, $chmod)) {
return false;
}
return true;
}
/**
* Tests permissions on a directory and throws out friendly
* error messages and attempts to chmod it itself if possible
* @param string $dir Directory path
* @param int $chmod Permissions
* @return bool True if directory is writable
*/
private function _testPermissions($dir, $chmod)
{
// early abort, if it is writable, everything is hunky-dory
if (is_writable($dir)) {
return true;
}
if (!is_dir($dir)) {
// generally, you'll want to handle this beforehand
// so a more specific error message can be given
trigger_error(
'Directory ' . $dir . ' does not exist',
E_USER_WARNING
);
return false;
}
if (function_exists('posix_getuid') && $chmod !== null) {
// POSIX system, we can give more specific advice
if (fileowner($dir) === posix_getuid()) {
// we can chmod it ourselves
$chmod = $chmod | 0700;
if (chmod($dir, $chmod)) {
return true;
}
} elseif (filegroup($dir) === posix_getgid()) {
$chmod = $chmod | 0070;
} else {
// PHP's probably running as nobody, it is
// not obvious how to fix this (777 is probably
// bad if you are multi-user), let the user figure it out
$chmod = null;
}
trigger_error(
'Directory ' . $dir . ' not writable. ' .
($chmod === null ? '' : 'Please chmod to ' . decoct($chmod)),
E_USER_WARNING
);
} else {
// generic error message
trigger_error(
'Directory ' . $dir . ' not writable, ' .
'please alter file permissions',
E_USER_WARNING
);
}
return false;
}
}
// vim: et sw=4 sts=4
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