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https://github.com/EGroupware/egroupware.git
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192 lines
6.6 KiB
PHP
Executable File
192 lines
6.6 KiB
PHP
Executable File
<?php
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class HTMLPurifier_DefinitionCache_Serializer extends
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HTMLPurifier_DefinitionCache
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{
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public function add($def, $config) {
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if (!$this->checkDefType($def)) return;
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$file = $this->generateFilePath($config);
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if (file_exists($file)) return false;
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if (!$this->_prepareDir($config)) return false;
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return $this->_write($file, serialize($def), $config);
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}
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public function set($def, $config) {
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if (!$this->checkDefType($def)) return;
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$file = $this->generateFilePath($config);
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if (!$this->_prepareDir($config)) return false;
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return $this->_write($file, serialize($def), $config);
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}
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public function replace($def, $config) {
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if (!$this->checkDefType($def)) return;
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$file = $this->generateFilePath($config);
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if (!file_exists($file)) return false;
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if (!$this->_prepareDir($config)) return false;
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return $this->_write($file, serialize($def), $config);
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}
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public function get($config) {
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$file = $this->generateFilePath($config);
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if (!file_exists($file)) return false;
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return unserialize(file_get_contents($file));
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}
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public function remove($config) {
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$file = $this->generateFilePath($config);
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if (!file_exists($file)) return false;
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return unlink($file);
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}
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public function flush($config) {
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if (!$this->_prepareDir($config)) return false;
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$dir = $this->generateDirectoryPath($config);
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$dh = opendir($dir);
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while (false !== ($filename = readdir($dh))) {
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if (empty($filename)) continue;
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if ($filename[0] === '.') continue;
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unlink($dir . '/' . $filename);
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}
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}
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public function cleanup($config) {
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if (!$this->_prepareDir($config)) return false;
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$dir = $this->generateDirectoryPath($config);
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$dh = opendir($dir);
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while (false !== ($filename = readdir($dh))) {
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if (empty($filename)) continue;
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if ($filename[0] === '.') continue;
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$key = substr($filename, 0, strlen($filename) - 4);
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if ($this->isOld($key, $config)) unlink($dir . '/' . $filename);
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}
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}
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/**
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* Generates the file path to the serial file corresponding to
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* the configuration and definition name
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* @todo Make protected
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*/
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public function generateFilePath($config) {
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$key = $this->generateKey($config);
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return $this->generateDirectoryPath($config) . '/' . $key . '.ser';
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}
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/**
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* Generates the path to the directory contain this cache's serial files
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* @note No trailing slash
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* @todo Make protected
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*/
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public function generateDirectoryPath($config) {
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$base = $this->generateBaseDirectoryPath($config);
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return $base . '/' . $this->type;
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}
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/**
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* Generates path to base directory that contains all definition type
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* serials
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* @todo Make protected
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*/
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public function generateBaseDirectoryPath($config) {
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$base = $config->get('Cache.SerializerPath');
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$base = is_null($base) ? HTMLPURIFIER_PREFIX . '/HTMLPurifier/DefinitionCache/Serializer' : $base;
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return $base;
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}
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/**
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* Convenience wrapper function for file_put_contents
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* @param $file File name to write to
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* @param $data Data to write into file
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* @param $config Config object
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* @return Number of bytes written if success, or false if failure.
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*/
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private function _write($file, $data, $config) {
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$result = file_put_contents($file, $data);
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if ($result !== false) {
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// set permissions of the new file (no execute)
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$chmod = $config->get('Cache.SerializerPermissions');
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if (!$chmod) {
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$chmod = 0644; // invalid config or simpletest
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}
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$chmod = $chmod & 0666;
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chmod($file, $chmod);
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}
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return $result;
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}
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/**
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* Prepares the directory that this type stores the serials in
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* @param $config Config object
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* @return True if successful
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*/
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private function _prepareDir($config) {
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$directory = $this->generateDirectoryPath($config);
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$chmod = $config->get('Cache.SerializerPermissions');
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if (!$chmod) {
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$chmod = 0755; // invalid config or simpletest
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}
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if (!is_dir($directory)) {
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$base = $this->generateBaseDirectoryPath($config);
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if (!is_dir($base)) {
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trigger_error('Base directory '.$base.' does not exist,
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please create or change using %Cache.SerializerPath',
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E_USER_WARNING);
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return false;
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} elseif (!$this->_testPermissions($base, $chmod)) {
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return false;
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}
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$old = umask(0000);
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mkdir($directory, $chmod);
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umask($old);
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} elseif (!$this->_testPermissions($directory, $chmod)) {
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return false;
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}
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return true;
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}
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/**
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* Tests permissions on a directory and throws out friendly
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* error messages and attempts to chmod it itself if possible
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* @param $dir Directory path
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* @param $chmod Permissions
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* @return True if directory writable
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*/
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private function _testPermissions($dir, $chmod) {
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// early abort, if it is writable, everything is hunky-dory
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if (is_writable($dir)) return true;
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if (!is_dir($dir)) {
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// generally, you'll want to handle this beforehand
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// so a more specific error message can be given
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trigger_error('Directory '.$dir.' does not exist',
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E_USER_WARNING);
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return false;
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}
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if (function_exists('posix_getuid')) {
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// POSIX system, we can give more specific advice
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if (fileowner($dir) === posix_getuid()) {
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// we can chmod it ourselves
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$chmod = $chmod | 0700;
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if (chmod($dir, $chmod)) return true;
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} elseif (filegroup($dir) === posix_getgid()) {
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$chmod = $chmod | 0070;
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} else {
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// PHP's probably running as nobody, so we'll
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// need to give global permissions
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$chmod = $chmod | 0777;
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}
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trigger_error('Directory '.$dir.' not writable, '.
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'please chmod to ' . decoct($chmod),
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E_USER_WARNING);
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} else {
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// generic error message
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trigger_error('Directory '.$dir.' not writable, '.
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'please alter file permissions',
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E_USER_WARNING);
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}
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return false;
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}
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}
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// vim: et sw=4 sts=4
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