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<?php |
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if (!defined('BASEPATH')) { |
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exit('No direct script access allowed'); |
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} |
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/** |
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* Image CMS |
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* Cache Class |
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*/ |
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class Cache |
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{ |
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public $CI; |
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public $get = 0; |
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public $set = 0; |
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public $disableCache = 0; |
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//Cache config |
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// TODO: Rewrite auto_clean to fetch date from DB |
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public $_Config = [ |
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'store' => 'cache', |
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'auto_clean' => 500, //Random number to run _Clean(); |
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'auto_clean_life' => 3600, |
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'auto_clean_all' => TRUE, |
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'ttl' => 3600, |
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]; //one hour |
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public function __construct() { |
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$this->CI = & get_instance(); |
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if ($this->CI->config->item('cache_path') != '') { |
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$this->_Config['default_store'] = $this->CI->config->item('cache_path'); |
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$this->_Config['store'] = $this->CI->config->item('cache_path'); |
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} else { |
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$this->_Config['default_store'] = BASEPATH . 'cache/'; |
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$this->_Config['store'] = BASEPATH . 'cache/'; |
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} |
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$this->disableCache = (boolean) $this->CI->config->item('disable_cache'); |
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// Is cache folder wratible? |
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if (!is_writable($this->_Config['store'])) { |
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$this->log_cache_error('Constructor :: Store ' . $this->_Config['store'] . ' is not writable'); |
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} |
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// autoclean if random is 1 |
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if (($this->_Config['auto_clean'] !== false) && (rand(1, $this->_Config['auto_clean']) === 1)) { |
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$this->Clean(); |
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} |
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} |
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/** |
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* Fetch Cached File |
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* |
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* @param string $key |
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* |
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* @return mixed |
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*/ |
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public function fetch($key, $group = FALSE) { |
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if ($this->disableCache === true) { |
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return false; |
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} |
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$this->set_group($group); |
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if (($ret = $this->_fetch($key)) === false) { |
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return false; |
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} else { |
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return $ret; |
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} |
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} |
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/** |
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* @param string $key |
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*/ |
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private function _fetch($key) { |
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$file = $this->_Config['store'] . 'cache_' . $this->generatekey($key); |
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$this->set_default_group(); |
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if (!file_exists($file)) { |
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return FALSE; |
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} |
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View Code Duplication |
if (!($fp = fopen($file, 'r'))) { |
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$this->log_cache_error('Fetch :: Error Opening File ' . $file); |
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return FALSE; |
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} |
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// Only reading |
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flock($fp, LOCK_SH); |
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// Cache data |
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$data = unserialize(file_get_contents($file)); |
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fclose($fp); |
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// if cache not expried return cache file |
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View Code Duplication |
if (time() < $data['expire']) { |
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$this->get++; |
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return $data['cache']; |
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} else { |
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return FALSE; |
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} |
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} |
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/** |
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* Fetch cached function |
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*/ |
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public function fetch_func($object, $func, $args = []) { |
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$file = $this->_Config['store'] . 'cache_' . $this->generatekey(get_class($object) . '::' . $func . '::' . serialize($args)); |
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$this->set_default_group(); |
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if (!file_exists($file)) { |
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return false; |
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} |
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View Code Duplication |
if (!($fp = fopen($file, 'r'))) { |
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$this->log_cache_error('Fetch :: Error Opening File ' . $file); |
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return false; |
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} |
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flock($fp, LOCK_SH); |
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$data = unserialize(file_get_contents($file)); |
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fclose($fp); |
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View Code Duplication |
if (time() < $data['expire']) { |
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$this->get++; |
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return $data['cache']; |
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} else { |
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return FALSE; |
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} |
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} |
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/** |
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* Store Cache Item |
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* |
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* @param string $key |
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* @param mixed $data |
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* @param int $ttl |
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* |
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* @return bool |
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*/ |
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public function store($key, $data, $ttl = false, $group = false) { |
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if (!$ttl) { |
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$ttl = $this->_Config['ttl']; |
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} |
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$this->set_group($group); |
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$file = $this->_Config['store'] . 'cache_' . $this->generatekey($key); |
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$data = serialize(['expire' => ($ttl + time()), 'cache' => $data]); |
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if (!($fp = fopen($file, 'a+'))) { |
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$this->log_cache_error('Store :: Error Opening file ' . $file); |
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} |
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flock($fp, LOCK_EX); |
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fseek($fp, 0); |
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ftruncate($fp, 0); // Clear file |
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if (fwrite($fp, $data) === false) { |
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$this->log_cache_error('Store :: Error writing to file ' . $file); |
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} |
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fclose($fp); |
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$this->set_default_group(); |
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$this->set++; |
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return true; |
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} |
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/** |
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* Group Function |
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* |
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* @param string $group |
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* |
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* @access public |
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*/ |
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public function set_group($group) { |
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if ($group == FALSE) { |
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$this->_Config['store'] = $this->_Config['default_store']; |
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return; |
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} |
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if (!is_dir($this->_Config['store'] . $group)) { |
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mkdir($this->_Config['store'] . $group); |
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@chmod($this->_Config['store'] . $group, 0777); |
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} |
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$this->_Config['store'] .= $group . '/'; |
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} |
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public function set_default_group() { |
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$this->_Config['store'] = $this->_Config['default_store']; |
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} |
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/** |
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* Cache Function |
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* |
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* @return mixed |
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* @access public |
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*/ |
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public function call($func = [], $args = [], $ttl = false) { |
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if ($ttl == false) { |
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$ttl = $this->_Config['ttl']; |
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} |
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$arguments = func_get_args(); |
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//class_name::function |
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$key = get_class($arguments[0][0]) . '::' . $arguments[0][1] . '::' . serialize($args); |
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View Code Duplication |
if (($cache = $this->fetch($key)) !== false) { |
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$this->set_default_group(); |
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return $cache; |
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} else { |
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$target = array_shift($arguments); |
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$result = call_user_func_array($target, $args); |
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$this->set_default_group(); |
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if (!$this->store($key, $result, false)) { |
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return false; |
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} |
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return $result; |
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} |
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} |
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public function Clean() { |
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if (!($dh = opendir($this->_Config['store']))) { |
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$this->log_cache_error('Clean :: Error Opening Store ' . $this->_Config['store']); |
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return false; |
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} |
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$this->log_cache_error('Clean :: Autoclean started'); |
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$n = 0; |
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while ($file = readdir($dh)) { |
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$stat = stat($this->_Config['store']); |
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if (($file != '.') && ($file != '..') && ($file != 'index.html')) { |
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if (substr($file, 0, 6) != 'cache_' && $file != 'hooks.php' && $file != '.' && $file != '..' && $file != '/' && strstr($file, '.') != TRUE && (time() - $stat['mtime']) > $this->_Config['auto_clean_life']) { |
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$files_all = opendir('./system/cache/' . $file); |
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while (false !== ($fileT = readdir($files_all))) { |
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$stat = stat($this->_Config['store']); |
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// echo $stat['mtime']; |
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if ($fileT != '.' && $fileT != '..' && $fileT != '/' && (time() - @$stat['mtime']) > $this->_Config['auto_clean_life']) { |
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@unlink('./system/cache/' . $file . '/' . $fileT); |
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$n++; |
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} |
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} |
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} |
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if (strstr($file, '.') === TRUE && (time() - $stat['mtime']) > $this->_Config['auto_clean_life']) { |
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@unlink($file); |
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$n++; |
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} |
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} |
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} |
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$this->log_cache_error('Clean :: Autoclean done'); |
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return $n; |
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} |
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/** |
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* Delete Cache Item |
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* |
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* @param string $key |
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* |
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* @return bool |
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*/ |
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public function delete($key, $group = FALSE) { |
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$this->set_group($group); |
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$file = $this->_Config['store'] . 'cache_' . $this->generatekey($key); |
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$this->set_default_group(); |
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if (file_exists($file)) { |
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return @unlink($file); |
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} else { |
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return false; |
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} |
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} |
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/** |
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* Delete group folder |
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* |
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* @param string $group |
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* @access public |
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*/ |
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public function delete_group($group) { |
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if ($group != '.' AND $group != '..' AND $group != 'templates_c') { |
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$file = BASEPATH . 'cache/' . $group; |
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$this->CI->load->helper('file'); |
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delete_files($file); |
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} |
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} |
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/** |
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* Delete Cached Function |
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* |
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* @param $object |
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* @param $func |
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* @param array $args |
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* @return bool |
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*/ |
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public function delete_func($object, $func, $args = []) { |
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$file = $this->_Config['store'] . 'cache_' . $this->generatekey(get_class($object) . '::' . $func . '::' . serialize($args)); |
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$this->set_default_group(); |
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if (file_exists($file)) { |
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return @unlink($file); |
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} else { |
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return false; |
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} |
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} |
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/** |
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* Delete All Cache Items |
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* |
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* @return integer |
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* @access public |
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*/ |
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public function delete_all() { |
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$n = 0; |
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$cache_store_dir = $this->_Config['store'] . '/'; |
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if (is_dir($cache_store_dir) and ( $root_dir_handle = opendir($cache_store_dir))) { |
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while (false !== ($file = readdir($root_dir_handle))) { |
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View Code Duplication |
if (substr($file, 0, 6) != 'cache_' && $file != 'hooks.php' && $file != '.' && $file != '..' && $file != '/') { |
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$cache_sub_dir = $cache_store_dir . $file . '/'; |
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if (is_dir($cache_sub_dir) and ( $sub_dir_handle = opendir($cache_sub_dir))) { |
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while (FALSE !== ($fileT = readdir($sub_dir_handle))) { |
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if ($fileT != '.' && $fileT != '..' && $fileT != '/') { |
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$n++; |
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@unlink($cache_sub_dir . $fileT); |
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} |
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} |
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} |
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} |
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if (substr($file, 0, 6) == 'cache_' || $file == 'hooks.php' || strstr($file, '.') === TRUE) { |
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$n++; |
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@unlink($cache_store_dir . $file); |
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} |
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} |
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} |
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$cache_sub_dir = $cache_store_dir . 'templates_c/HTML/'; |
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if (is_dir($cache_sub_dir) and ( $sub_dir_handle = opendir($cache_sub_dir))) { |
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while (false !== ($fileT = readdir($sub_dir_handle))) { |
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if ($fileT != '.' && $fileT != '..' && $fileT != '/') { |
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@unlink($cache_sub_dir . $fileT); |
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|
} |
369
|
|
|
} |
370
|
|
|
} |
371
|
|
|
|
372
|
|
|
$this->log_cache_error('All cache files deleted'); |
373
|
|
|
|
374
|
|
|
return $n; |
375
|
|
|
} |
376
|
|
|
|
377
|
|
|
public function clearCacheFolder($folder = NULL) { |
378
|
|
|
|
379
|
|
|
if ($folder !== NULL) { |
380
|
|
|
if ($files_all = opendir('./system/cache/' . $folder . '/')) { |
381
|
|
|
while (false !== ($fileT = readdir($files_all))) { |
382
|
|
|
|
383
|
|
|
if ($fileT != '.' && $fileT != '..' && $fileT != '/' && substr($fileT, 0, 6) == 'cache_' || $fileT != 'hooks.php') { |
384
|
|
|
@unlink('./system/cache/' . $folder . '/' . $fileT); |
|
|
|
|
385
|
|
|
} |
386
|
|
|
} |
387
|
|
|
} else { |
388
|
|
|
log_message('error', 'Library cache, Function clearCacheFolder , opendir Patch:' . './system/cache/' . $folder . '/' . ' RETURN FALSE'); |
389
|
|
|
return false; |
390
|
|
|
} |
391
|
|
|
} else { |
392
|
|
|
log_message('error', 'Library cache, Function clearCacheFolder. Do not get the name of the directory to delete cache'); |
393
|
|
|
return false; |
394
|
|
|
} |
395
|
|
|
} |
396
|
|
|
|
397
|
|
|
public function cache_file() { |
398
|
|
|
$n = 0; |
399
|
|
|
|
400
|
|
|
$cache_store_dir = $this->_Config['store'] . '/'; |
401
|
|
|
if (is_dir($cache_store_dir) and ( $root_dir_handle = opendir($cache_store_dir))) { |
402
|
|
|
while (false !== ($file = readdir($root_dir_handle))) { |
403
|
|
|
|
404
|
|
View Code Duplication |
if (substr($file, 0, 6) != 'cache_' && $file != 'hooks.php' && $file != '.' && $file != '..' && $file != '/') { |
405
|
|
|
$cache_sub_dir = $cache_store_dir . $file . '/'; |
406
|
|
|
if (is_dir($cache_sub_dir) and ( $sub_dir_handle = opendir($cache_sub_dir))) { |
407
|
|
|
while (false !== ($fileT = readdir($sub_dir_handle))) { |
408
|
|
|
|
409
|
|
|
if ($fileT != '.' && $fileT != '..' && $fileT != '/' && strstr($fileT, '~') != TRUE) { |
410
|
|
|
$n++; |
411
|
|
|
} |
412
|
|
|
} |
413
|
|
|
} |
414
|
|
|
} |
415
|
|
|
if (substr($file, 0, 6) == 'cache_' || $file == 'hooks.php' && strstr($fileT, '~') != TRUE) { |
416
|
|
|
$n++; |
417
|
|
|
} |
418
|
|
|
} |
419
|
|
|
} |
420
|
|
|
|
421
|
|
|
$this->log_cache_error('All cache files deleted'); |
422
|
|
|
|
423
|
|
|
return $n; |
424
|
|
|
} |
425
|
|
|
|
426
|
|
|
/** |
427
|
|
|
* @param string $key |
428
|
|
|
* @return string |
429
|
|
|
*/ |
430
|
|
|
public function generatekey($key) { |
431
|
|
|
return md5($key); |
432
|
|
|
} |
433
|
|
|
|
434
|
|
|
/** |
435
|
|
|
* @param string $msg |
436
|
|
|
* @return bool |
|
|
|
|
437
|
|
|
*/ |
438
|
|
|
private function log_cache_error($msg) { |
439
|
|
|
$log_path = APPPATH . 'logs/'; |
440
|
|
|
|
441
|
|
|
$filepath = $log_path . 'cache_log-' . date('Y-m-d') . EXT; |
442
|
|
|
$message = ''; |
443
|
|
|
|
444
|
|
|
if (!file_exists($filepath)) { |
445
|
|
|
$message .= '<' . "?php if ( ! defined('BASEPATH')) exit('No direct script access allowed'); ?" . ">\n\n"; |
446
|
|
|
} |
447
|
|
|
|
448
|
|
|
if (!$fp = @fopen($filepath, FOPEN_WRITE_CREATE)) { |
449
|
|
|
return FALSE; |
450
|
|
|
} |
451
|
|
|
|
452
|
|
|
$message .= date('Y-m-d H:i:s') . ' --> ' . $msg . "\n"; |
453
|
|
|
|
454
|
|
|
flock($fp, LOCK_EX); |
455
|
|
|
fwrite($fp, $message); |
456
|
|
|
flock($fp, LOCK_UN); |
457
|
|
|
fclose($fp); |
458
|
|
|
|
459
|
|
|
@chmod($filepath, FILE_WRITE_MODE); |
|
|
|
|
460
|
|
|
} |
461
|
|
|
|
462
|
|
|
} |
463
|
|
|
|
464
|
|
|
/* End of cache.php */ |
This check looks for assignments to scalar types that may be of the wrong type.
To ensure the code behaves as expected, it may be a good idea to add an explicit type cast.