--- /dev/null
+<?php
+/*
+The NuSOAP project home is:
+http://sourceforge.net/projects/nusoap/
+
+The primary support for NuSOAP is the mailing list:
+nusoap-general@lists.sourceforge.net
+*/
+
+/**
+* caches instances of the wsdl class
+*
+* @author Scott Nichol <snichol@users.sourceforge.net>
+* @author Ingo Fischer <ingo@apollon.de>
+* @version $Id: class.wsdlcache.php,v 1.7 2007/04/17 16:34:03 snichol Exp $
+* @access public
+*/
+class nusoap_wsdlcache {
+ /**
+ * @var resource
+ * @access private
+ */
+ var $fplock;
+ /**
+ * @var integer
+ * @access private
+ */
+ var $cache_lifetime;
+ /**
+ * @var string
+ * @access private
+ */
+ var $cache_dir;
+ /**
+ * @var string
+ * @access public
+ */
+ var $debug_str = '';
+
+ /**
+ * constructor
+ *
+ * @param string $cache_dir directory for cache-files
+ * @param integer $cache_lifetime lifetime for caching-files in seconds or 0 for unlimited
+ * @access public
+ */
+ function nusoap_wsdlcache($cache_dir='.', $cache_lifetime=0) {
+ $this->fplock = array();
+ $this->cache_dir = $cache_dir != '' ? $cache_dir : '.';
+ $this->cache_lifetime = $cache_lifetime;
+ }
+
+ /**
+ * creates the filename used to cache a wsdl instance
+ *
+ * @param string $wsdl The URL of the wsdl instance
+ * @return string The filename used to cache the instance
+ * @access private
+ */
+ function createFilename($wsdl) {
+ return $this->cache_dir.'/wsdlcache-' . md5($wsdl);
+ }
+
+ /**
+ * adds debug data to the class level debug string
+ *
+ * @param string $string debug data
+ * @access private
+ */
+ function debug($string){
+ $this->debug_str .= get_class($this).": $string\n";
+ }
+
+ /**
+ * gets a wsdl instance from the cache
+ *
+ * @param string $wsdl The URL of the wsdl instance
+ * @return object wsdl The cached wsdl instance, null if the instance is not in the cache
+ * @access public
+ */
+ function get($wsdl) {
+ $filename = $this->createFilename($wsdl);
+ if ($this->obtainMutex($filename, "r")) {
+ // check for expired WSDL that must be removed from the cache
+ if ($this->cache_lifetime > 0) {
+ if (file_exists($filename) && (time() - filemtime($filename) > $this->cache_lifetime)) {
+ unlink($filename);
+ $this->debug("Expired $wsdl ($filename) from cache");
+ $this->releaseMutex($filename);
+ return null;
+ }
+ }
+ // see what there is to return
+ if (!file_exists($filename)) {
+ $this->debug("$wsdl ($filename) not in cache (1)");
+ $this->releaseMutex($filename);
+ return null;
+ }
+ $fp = @fopen($filename, "r");
+ if ($fp) {
+ $s = implode("", @file($filename));
+ fclose($fp);
+ $this->debug("Got $wsdl ($filename) from cache");
+ } else {
+ $s = null;
+ $this->debug("$wsdl ($filename) not in cache (2)");
+ }
+ $this->releaseMutex($filename);
+ return (!is_null($s)) ? unserialize($s) : null;
+ } else {
+ $this->debug("Unable to obtain mutex for $filename in get");
+ }
+ return null;
+ }
+
+ /**
+ * obtains the local mutex
+ *
+ * @param string $filename The Filename of the Cache to lock
+ * @param string $mode The open-mode ("r" or "w") or the file - affects lock-mode
+ * @return boolean Lock successfully obtained ?!
+ * @access private
+ */
+ function obtainMutex($filename, $mode) {
+ if (isset($this->fplock[md5($filename)])) {
+ $this->debug("Lock for $filename already exists");
+ return false;
+ }
+ $this->fplock[md5($filename)] = fopen($filename.".lock", "w");
+ if ($mode == "r") {
+ return flock($this->fplock[md5($filename)], LOCK_SH);
+ } else {
+ return flock($this->fplock[md5($filename)], LOCK_EX);
+ }
+ }
+
+ /**
+ * adds a wsdl instance to the cache
+ *
+ * @param object wsdl $wsdl_instance The wsdl instance to add
+ * @return boolean WSDL successfully cached
+ * @access public
+ */
+ function put($wsdl_instance) {
+ $filename = $this->createFilename($wsdl_instance->wsdl);
+ $s = serialize($wsdl_instance);
+ if ($this->obtainMutex($filename, "w")) {
+ $fp = fopen($filename, "w");
+ if (! $fp) {
+ $this->debug("Cannot write $wsdl_instance->wsdl ($filename) in cache");
+ $this->releaseMutex($filename);
+ return false;
+ }
+ fputs($fp, $s);
+ fclose($fp);
+ $this->debug("Put $wsdl_instance->wsdl ($filename) in cache");
+ $this->releaseMutex($filename);
+ return true;
+ } else {
+ $this->debug("Unable to obtain mutex for $filename in put");
+ }
+ return false;
+ }
+
+ /**
+ * releases the local mutex
+ *
+ * @param string $filename The Filename of the Cache to lock
+ * @return boolean Lock successfully released
+ * @access private
+ */
+ function releaseMutex($filename) {
+ $ret = flock($this->fplock[md5($filename)], LOCK_UN);
+ fclose($this->fplock[md5($filename)]);
+ unset($this->fplock[md5($filename)]);
+ if (! $ret) {
+ $this->debug("Not able to release lock for $filename");
+ }
+ return $ret;
+ }
+
+ /**
+ * removes a wsdl instance from the cache
+ *
+ * @param string $wsdl The URL of the wsdl instance
+ * @return boolean Whether there was an instance to remove
+ * @access public
+ */
+ function remove($wsdl) {
+ $filename = $this->createFilename($wsdl);
+ if (!file_exists($filename)) {
+ $this->debug("$wsdl ($filename) not in cache to be removed");
+ return false;
+ }
+ // ignore errors obtaining mutex
+ $this->obtainMutex($filename, "w");
+ $ret = unlink($filename);
+ $this->debug("Removed ($ret) $wsdl ($filename) from cache");
+ $this->releaseMutex($filename);
+ return $ret;
+ }
+}
+
+/**
+ * For backward compatibility
+ */
+class wsdlcache extends nusoap_wsdlcache {
+}
+?>
git://200.18.67.61 / siap.git / blobdiff