392 Zeilen
14 KiB
PHP
392 Zeilen
14 KiB
PHP
<?php
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//
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// +----------------------------------------------------------------------+
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// | PHP Version 4 |
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// +----------------------------------------------------------------------+
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// | Copyright (c) 1997-2003 The PHP Group |
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// +----------------------------------------------------------------------+
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// | This source file is subject to version 3.0 of the PHP license, |
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// | that is bundled with this package in the file LICENSE, and is |
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// | available through the world-wide-web at the following url: |
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// | http://www.php.net/license/3_0.txt. |
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// | If you did not receive a copy of the PHP license and are unable to |
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// | obtain it through the world-wide-web, please send a note to |
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// | license@php.net so we can mail you a copy immediately. |
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// +----------------------------------------------------------------------+
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// | Author: Stig Bakken <ssb@php.net> |
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// +----------------------------------------------------------------------+
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//
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// $Id$
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require_once 'PEAR.php';
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require_once 'PEAR/Config.php';
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/**
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* This is a class for doing remote operations against the central
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* PEAR database.
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*
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* @nodep XML_RPC_Value
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* @nodep XML_RPC_Message
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* @nodep XML_RPC_Client
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*/
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class PEAR_Remote extends PEAR
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{
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// {{{ properties
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var $config = null;
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var $cache = null;
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// }}}
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// {{{ PEAR_Remote(config_object)
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function PEAR_Remote(&$config)
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{
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$this->PEAR();
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$this->config = &$config;
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}
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// }}}
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// {{{ getCache()
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function getCache($args)
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{
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$id = md5(serialize($args));
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$cachedir = $this->config->get('cache_dir');
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$filename = $cachedir . DIRECTORY_SEPARATOR . 'xmlrpc_cache_' . $id;
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if (!file_exists($filename)) {
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return null;
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};
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$fp = fopen($filename, 'rb');
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if (!$fp) {
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return null;
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}
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$content = fread($fp, filesize($filename));
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fclose($fp);
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$result = array(
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'age' => time() - filemtime($filename),
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'lastChange' => filemtime($filename),
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'content' => unserialize($content),
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);
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return $result;
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}
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// }}}
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// {{{ saveCache()
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function saveCache($args, $data)
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{
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$id = md5(serialize($args));
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$cachedir = $this->config->get('cache_dir');
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if (!file_exists($cachedir)) {
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System::mkdir(array('-p', $cachedir));
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}
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$filename = $cachedir.'/xmlrpc_cache_'.$id;
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$fp = @fopen($filename, "wb");
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if ($fp) {
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fwrite($fp, serialize($data));
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fclose($fp);
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};
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}
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// }}}
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// {{{ call(method, [args...])
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function call($method)
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{
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$_args = $args = func_get_args();
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$this->cache = $this->getCache($args);
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$cachettl = $this->config->get('cache_ttl');
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// If cache is newer than $cachettl seconds, we use the cache!
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if ($this->cache !== null && $this->cache['age'] < $cachettl) {
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return $this->cache['content'];
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};
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if (extension_loaded("xmlrpc")) {
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$result = call_user_func_array(array(&$this, 'call_epi'), $args);
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if (!PEAR::isError($result)) {
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$this->saveCache($_args, $result);
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};
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return $result;
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}
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if (!@include_once("XML/RPC.php")) {
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return $this->raiseError("For this remote PEAR operation you need to install the XML_RPC package");
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}
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array_shift($args);
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$server_host = $this->config->get('master_server');
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$username = $this->config->get('username');
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$password = $this->config->get('password');
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$eargs = array();
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foreach($args as $arg) $eargs[] = $this->_encode($arg);
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$f = new XML_RPC_Message($method, $eargs);
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if ($this->cache !== null) {
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$maxAge = '?maxAge='.$this->cache['lastChange'];
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} else {
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$maxAge = '';
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};
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$proxy_host = $proxy_port = $proxy_user = $proxy_pass = '';
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if ($proxy = parse_url($this->config->get('http_proxy'))) {
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$proxy_host = @$proxy['host'];
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$proxy_port = @$proxy['port'];
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$proxy_user = @$proxy['user'];
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$proxy_pass = @$proxy['pass'];
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}
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$c = new XML_RPC_Client('/xmlrpc.php'.$maxAge, $server_host, 80, $proxy_host, $proxy_port, $proxy_user, $proxy_pass);
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if ($username && $password) {
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$c->setCredentials($username, $password);
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}
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if ($this->config->get('verbose') >= 3) {
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$c->setDebug(1);
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}
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$r = $c->send($f);
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if (!$r) {
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return $this->raiseError("XML_RPC send failed");
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}
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$v = $r->value();
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if ($e = $r->faultCode()) {
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if ($e == $GLOBALS['XML_RPC_err']['http_error'] && strstr($r->faultString(), '304 Not Modified') !== false) {
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return $this->cache['content'];
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}
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return $this->raiseError($r->faultString(), $e);
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}
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$result = XML_RPC_decode($v);
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$this->saveCache($_args, $result);
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return $result;
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}
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// }}}
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// {{{ call_epi(method, [args...])
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function call_epi($method)
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{
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do {
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if (extension_loaded("xmlrpc")) {
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break;
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}
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if (OS_WINDOWS) {
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$ext = 'dll';
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} elseif (PHP_OS == 'HP-UX') {
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$ext = 'sl';
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} elseif (PHP_OS == 'AIX') {
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$ext = 'a';
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} else {
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$ext = 'so';
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}
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$ext = OS_WINDOWS ? 'dll' : 'so';
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@dl("xmlrpc-epi.$ext");
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if (extension_loaded("xmlrpc")) {
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break;
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}
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@dl("xmlrpc.$ext");
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if (extension_loaded("xmlrpc")) {
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break;
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}
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return $this->raiseError("unable to load xmlrpc extension");
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} while (false);
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$params = func_get_args();
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array_shift($params);
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$method = str_replace("_", ".", $method);
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$request = xmlrpc_encode_request($method, $params);
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$server_host = $this->config->get("master_server");
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if (empty($server_host)) {
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return $this->raiseError("PEAR_Remote::call: no master_server configured");
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}
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$server_port = 80;
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if ($http_proxy = $this->config->get('http_proxy')) {
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$proxy = parse_url($http_proxy);
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$proxy_host = $proxy_port = $proxy_user = $proxy_pass = '';
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$proxy_host = @$proxy['host'];
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$proxy_port = @$proxy['port'];
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$proxy_user = @$proxy['user'];
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$proxy_pass = @$proxy['pass'];
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$fp = @fsockopen($proxy_host, $proxy_port);
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} else {
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$fp = @fsockopen($server_host, $server_port);
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}
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if (!$fp && $http_proxy) {
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return $this->raiseError("PEAR_Remote::call: fsockopen(`$proxy_host', $proxy_port) failed");
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} elseif (!$fp) {
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return $this->raiseError("PEAR_Remote::call: fsockopen(`$server_host', $server_port) failed");
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}
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$len = strlen($request);
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$req_headers = "Host: $server_host:$server_port\r\n" .
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"Content-type: text/xml\r\n" .
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"Content-length: $len\r\n";
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$username = $this->config->get('username');
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$password = $this->config->get('password');
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if ($username && $password) {
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$req_headers .= "Cookie: PEAR_USER=$username; PEAR_PW=$password\r\n";
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$tmp = base64_encode("$username:$password");
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$req_headers .= "Authorization: Basic $tmp\r\n";
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}
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if ($this->cache !== null) {
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$maxAge = '?maxAge='.$this->cache['lastChange'];
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} else {
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$maxAge = '';
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};
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if ($proxy_host != '' && $proxy_user != '') {
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$req_headers .= 'Proxy-Authorization: Basic '
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.base64_encode($proxy_user.':'.$proxy_pass)
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."\r\n";
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}
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if ($this->config->get('verbose') > 3) {
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print "XMLRPC REQUEST HEADERS:\n";
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var_dump($req_headers);
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print "XMLRPC REQUEST BODY:\n";
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var_dump($request);
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}
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if ($proxy_host != '') {
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$post_string = "POST http://".$server_host;
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if ($proxy_port > '') {
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$post_string .= ':'.$server_port;
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}
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} else {
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$post_string = "POST ";
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}
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fwrite($fp, ($post_string."/xmlrpc.php$maxAge HTTP/1.0\r\n$req_headers\r\n$request"));
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$response = '';
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$line1 = fgets($fp, 2048);
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if (!preg_match('!^HTTP/[0-9\.]+ (\d+) (.*)!', $line1, $matches)) {
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return $this->raiseError("PEAR_Remote: invalid HTTP response from XML-RPC server");
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}
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switch ($matches[1]) {
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case "200": // OK
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break;
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case "304": // Not Modified
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return $this->cache['content'];
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case "401": // Unauthorized
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if ($username && $password) {
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return $this->raiseError("PEAR_Remote: authorization failed", 401);
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} else {
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return $this->raiseError("PEAR_Remote: authorization required, please log in first", 401);
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}
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default:
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return $this->raiseError("PEAR_Remote: unexpected HTTP response", (int)$matches[1], null, null, "$matches[1] $matches[2]");
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}
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while (trim(fgets($fp, 2048)) != ''); // skip rest of headers
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while ($chunk = fread($fp, 10240)) {
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$response .= $chunk;
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}
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fclose($fp);
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if ($this->config->get('verbose') > 3) {
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print "XMLRPC RESPONSE:\n";
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var_dump($response);
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}
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$ret = xmlrpc_decode($response);
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if (is_array($ret) && isset($ret['__PEAR_TYPE__'])) {
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if ($ret['__PEAR_TYPE__'] == 'error') {
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if (isset($ret['__PEAR_CLASS__'])) {
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$class = $ret['__PEAR_CLASS__'];
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} else {
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$class = "PEAR_Error";
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}
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if ($ret['code'] === '') $ret['code'] = null;
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if ($ret['message'] === '') $ret['message'] = null;
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if ($ret['userinfo'] === '') $ret['userinfo'] = null;
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if (strtolower($class) == 'db_error') {
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$ret = $this->raiseError(PEAR::errorMessage($ret['code']),
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$ret['code'], null, null,
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$ret['userinfo']);
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} else {
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$ret = $this->raiseError($ret['message'], $ret['code'],
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null, null, $ret['userinfo']);
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}
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}
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} elseif (is_array($ret) && sizeof($ret) == 1 && is_array($ret[0]) &&
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!empty($ret[0]['faultString']) &&
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!empty($ret[0]['faultCode'])) {
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extract($ret[0]);
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$faultString = "XML-RPC Server Fault: " .
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str_replace("\n", " ", $faultString);
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return $this->raiseError($faultString, $faultCode);
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}
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return $ret;
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}
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// }}}
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// {{{ _encode
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// a slightly extended version of XML_RPC_encode
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function _encode($php_val)
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{
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global $XML_RPC_Boolean, $XML_RPC_Int, $XML_RPC_Double;
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global $XML_RPC_String, $XML_RPC_Array, $XML_RPC_Struct;
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$type = gettype($php_val);
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$xmlrpcval = new XML_RPC_Value;
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switch($type) {
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case "array":
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reset($php_val);
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$firstkey = key($php_val);
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end($php_val);
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$lastkey = key($php_val);
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if ($firstkey === 0 && is_int($lastkey) &&
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($lastkey + 1) == count($php_val)) {
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$is_continuous = true;
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reset($php_val);
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$size = count($php_val);
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for ($expect = 0; $expect < $size; $expect++, next($php_val)) {
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if (key($php_val) !== $expect) {
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$is_continuous = false;
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break;
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}
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}
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if ($is_continuous) {
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reset($php_val);
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$arr = array();
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while (list($k, $v) = each($php_val)) {
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$arr[$k] = $this->_encode($v);
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}
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$xmlrpcval->addArray($arr);
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break;
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}
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}
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// fall though if not numerical and continuous
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case "object":
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$arr = array();
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while (list($k, $v) = each($php_val)) {
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$arr[$k] = $this->_encode($v);
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}
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$xmlrpcval->addStruct($arr);
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break;
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case "integer":
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$xmlrpcval->addScalar($php_val, $XML_RPC_Int);
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break;
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case "double":
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$xmlrpcval->addScalar($php_val, $XML_RPC_Double);
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break;
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case "string":
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case "NULL":
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$xmlrpcval->addScalar($php_val, $XML_RPC_String);
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break;
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case "boolean":
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$xmlrpcval->addScalar($php_val, $XML_RPC_Boolean);
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break;
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case "unknown type":
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default:
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return null;
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}
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return $xmlrpcval;
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}
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// }}}
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}
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?>
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