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<? |
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/** |
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* This file contains the DataSource::Proxy::XMLRPC module. |
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* |
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* @author Andreas Motl <andreas.motl@ilo.de> |
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* @package org.netfrag.glib |
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* @name DataSource::Proxy::XMLRPC |
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* |
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*/ |
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|
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|
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/* |
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## -------------------------------------------------------------------------- |
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## $Id: XMLRPC.php,v 1.6 2003/04/04 21:23:29 joko Exp $ |
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## -------------------------------------------------------------------------- |
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## $Log: XMLRPC.php,v $ |
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## Revision 1.6 2003/04/04 21:23:29 joko |
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## session-based rpc-communcation: revamped code (especially 'function _call') |
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## renamed state-handling trigger-methods: now _sleep and _wakeup |
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## |
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## Revision 1.5 2003/03/28 06:56:52 joko |
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## updated logging/debugging code |
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## |
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## Revision 1.4 2003/03/28 03:00:12 joko |
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## enhanced error- and exception-handling |
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## |
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## Revision 1.3 2003/03/27 16:05:01 joko |
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## enhanced 'function _call': debugging, tracing and autodisconnect now parametrized |
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## |
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## Revision 1.2 2003/03/05 23:16:48 joko |
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## updated docu - phpDocumentor is very strict about its 'blocks'... |
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## |
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## Revision 1.1 2003/03/03 21:53:52 joko |
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## refactored from Data::Driver::RPC::Remote |
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## |
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## Revision 1.4 2003/02/20 21:42:43 joko |
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## + fix: always converting from utf8 into latin here (for now) |
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## |
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## Revision 1.3 2003/02/13 21:51:29 joko |
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## + now can remember its connection-state |
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## + sub ping |
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## |
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## Revision 1.2 2003/02/13 00:42:44 joko |
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## +- renamed modules |
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## |
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## Revision 1.1 2003/02/09 17:25:38 joko |
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## + refactored from flib/Application/RPC/Remote.php |
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## |
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## Revision 1.6 2003/02/03 03:37:45 jonen |
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## - removed unused argument '$decode' at function '_call()' |
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## + added argument '$options=array()' at function '_call()' |
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## which will be passed to function '&decodeData()' for e.g. utf8 decoding |
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## + added '$encoder->toISO()' at '&decodeData()', (re)moved from 'ProxyObject.php' |
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## |
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## Revision 1.5 2002/12/22 13:24:09 jonen |
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## + added utf8 encoding at 'send()' toggled by option |
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## |
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## Revision 1.4 2002/12/19 02:02:25 jonen |
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## + minor changes |
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## |
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## Revision 1.3 2002/12/19 01:59:37 jonen |
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## + minor changes: coment debug prints |
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## |
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## Revision 1.2 2002/12/05 21:45:31 joko |
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## + debugging |
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## |
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## Revision 1.1 2002/12/01 17:23:58 joko |
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## + initial check-in |
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## |
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## Revision 1.3 2002/12/01 06:22:57 cvsjoko |
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## + minor update: now can use config defaults or given args |
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## |
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## Revision 1.2 2002/10/29 19:14:45 cvsjoko |
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## - bugfix: dont' do utf8-encoding here |
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## |
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## Revision 1.1 2002/10/09 00:51:39 cvsjoko |
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## + new |
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## |
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## |
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## ------------------------------------------------------------------------- |
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*/ |
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|
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|
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// V1: normal require |
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//require_once 'XML/RPC/RPC.php'; |
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|
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// V2: first time load of foreign module (PEAR::XML::RPC) |
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//require_once 'XML/RPC/RPC.php'; |
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loadModule('XML::RPC::RPC'); |
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|
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loadModule('Class::Logger'); |
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|
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|
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/** |
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* This is the DataSource::Proxy::XMLRPC module. |
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* |
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* @author Andreas Motl <andreas.motl@ilo.de> |
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* @package org.netfrag.glib |
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* @subpackage DataSource |
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* @name DataSource::Proxy::XMLRPC |
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* |
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* @todo SOAP? |
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* |
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*/ |
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class DataSource_Proxy_XMLRPC extends Class_Logger { |
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|
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var $configured; |
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var $meta = array(); |
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var $response = null; |
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var $errors = array(); |
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|
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function DataSource_Proxy_XMLRPC($args = array()) { |
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|
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parent::constructor(); |
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|
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//print Dumper($this, $args); |
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//print Dumper($args); |
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|
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$this->_wakeup(); |
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|
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// force connect? |
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|
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// V1 |
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/* |
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if (!isset($this->meta[connected]) || $args[connect]) { |
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$this->meta[connected] = 1; |
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} |
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*/ |
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|
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// V2 |
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$this->FORCE_CONNECT = $args[connect]; |
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|
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|
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|
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// merge args - V1 |
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//if ($args['Host']) { $this->HOST = $args['Host']; } |
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//if ($args['Port']) { $this->PORT = $args['Port']; } |
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|
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// merge args - V2 |
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// TODO: php::merge_to($this, $args); |
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//php::merge_to($this, $args); |
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//print Dumper($args); |
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if (is_array($args)) { |
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foreach ($args as $key => $val) { |
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//print "key: $key<br/>"; |
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$key = strtoupper($key); |
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$this->$key = $val; |
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} |
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} |
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|
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// check if host is valid |
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if (!$this->HOST) { |
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$this->_raiseException( "->constructor: attribute 'host' is empty, please check your settings"); |
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return; |
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} |
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|
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if (!$this->PORT) { |
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$this->_raiseException( "->constructor: attribute 'port' is empty, please check your settings"); |
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return; |
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} |
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|
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$this->configured = 1; |
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|
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} |
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|
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function _wakeup() { |
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global $Data_Driver_RPC_Remote_meta; |
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session_register_safe("Data_Driver_RPC_Remote_meta"); |
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$this->meta = $Data_Driver_RPC_Remote_meta; |
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$this->_sleep(); |
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} |
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|
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function _sleep() { |
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global $Data_Driver_RPC_Remote_meta; |
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$Data_Driver_RPC_Remote_meta = $this->meta; |
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} |
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|
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function send($command, $data = "", $options = array()) { |
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|
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$this->log(get_class($this) . "->send: " . $command, PEAR_LOG_DEBUG); |
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|
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/* |
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if (!$this->isConnected()) { |
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$this->_raiseException( "->send[ command=$command ]: not connected while trying to send command!"); |
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return; |
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} |
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*/ |
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|
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// do 'encode' here and ... |
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if ($options[utf8]) { |
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$encoder = new Data_Encode($data); |
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$encoder->toUTF8(); |
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} |
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// call '_call' with 'decode' |
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return $this->_call($command, $data, $options); |
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} |
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|
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|
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function _call($command, $data = "", $options = array() ) { |
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|
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$RETRY_COUNT = 0; |
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$RETRY_MAX = 1; |
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|
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do { |
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|
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$RETRY_COUNT++; |
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|
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$this->__exception_method = '_call'; |
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|
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if (!$this->configured) { |
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$this->_raiseException("class not configured properly"); |
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return; |
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} |
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|
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// populate options list - mostly for debugging purposes |
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$options_list = array(); |
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foreach ($options as $key => $value) { |
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array_push($options_list, "$key=$value"); |
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} |
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|
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$data_debug = $data; |
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if (is_array($data_debug)) { $data_debug = join(", ", $data_debug); } |
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$options_debug = join(", ", $options_list); |
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// FIXME: replace through '_raiseException'? |
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$this->log(get_class($this) . "->_call: " . $command . "(" . $data_debug . ") [" . $options_debug . "]", PEAR_LOG_DEBUG); |
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|
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// trace |
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//print "call: $command<hr>"; |
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//print Dumper($data); |
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//print Dumper($this); |
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|
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// message - request |
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$msg = new XML_RPC_Message($command); |
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|
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// data |
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if ($data) { |
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$data_enc = XML_RPC_encode($data); |
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$msg->addParam($data_enc); |
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} |
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|
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$this->_hook_request($msg); |
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|
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// ??? |
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//print htmlentities($msg->serialize()); |
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|
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// remote procedure call |
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$rpc = new XML_RPC_Client("/", $this->HOST, $this->PORT); |
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|
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// TODO: detect highlevel errors, raise proper exceptions on them (e.g. 'Unknown method', 'Method signature error(s)') |
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// done: now possible to declare tracing at this point in configuration |
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// Please look inside your {appname}/etc/hosts/{hostname}.php |
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$rpc->setDebug($this->TRACE); |
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|
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//$rpc->setDebug(1); |
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|
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if ( $this->response = $rpc->send($msg) ) { |
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// intermediate response checking |
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$errcode = $this->_hook_errorcheck(); |
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$negotiation = $this->_hook_negotiation($errcode); |
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} else { |
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// TODO: redirect this error elsewhere! |
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//print "RPC-error!<br>"; |
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$this->_raiseException("no response"); |
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return; |
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} |
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|
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// retry method issued right now - i.e. in case an authentication came in between |
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if (!$negotiation[retry]) { |
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break; |
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} |
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|
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} while ($RETRY_COUNT < $RETRY_MAX); |
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|
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// message - response |
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$response_enc = $this->response->value(); |
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|
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// TODO: what's this? prematurely returning here should not be considered "stable".... |
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$data = $this->decodeData($response_enc, $options); |
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$this->_hook_response($data); |
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return $data; |
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|
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} |
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|
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|
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function &decodeData(&$payload, $options = array() ) { |
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//if (!is_object($payload)) { return; } |
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if ($payload) { |
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// data |
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$data = XML_RPC_decode($payload); |
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//print "data: " . dumpVar($response); |
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|
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// decode UTF8 to ISO if wanted |
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//if ($options[to_latin]) { |
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$encoder = new Data_Encode($data); |
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$encoder->toISO(); |
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//} |
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|
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$this->_be_connected(); |
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|
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return $data; |
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} else { |
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//print "ERROR!<br>"; |
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return 0; |
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} |
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} |
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|
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function _be_connected() { |
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$this->meta[connected] = 1; |
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$this->_sleep(); |
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} |
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|
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function _raiseException($message, $code = null) { |
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|
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$classname = get_class($this); |
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|
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if ($this->__exception_method) { |
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$message_full = $classname . '->' . $this->__exception_method . ': ' . $message; |
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} |
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|
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// aggregate errors for this run/query |
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$this->_add_error($message, $code); |
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|
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// spout out the error message of the raised exception |
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$this->log($classname . $message_full, PEAR_LOG_ERR); |
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|
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// handle some stuff regarding more special behaviour (will this get rule-based sometimes?) |
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|
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// handle 'FORCE_CONNECT' |
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$connect_condition = $this->FORCE_CONNECT = ($this->isConnected() && $this->DISCONNECT_ON_ERROR); |
| 330 |
if ($connect_condition) { |
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$message = '->_raiseException: [DISCONNECT_ON_ERROR] done transparently. Please reconnect manually.'; |
| 332 |
$this->_add_error($classname . $message, $code); |
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//$this->log($classname . $message, PEAR_LOG_WARNING); |
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$this->log($classname . $message, PEAR_LOG_ERR); |
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$this->meta[connected] = 0; |
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$this->_sleep(); |
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} |
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} |
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|
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function isConnected() { |
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return $this->meta[connected]; |
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} |
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|
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function ping() { |
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$this->_call('ping'); |
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} |
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|
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|
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function _hook_negotiation($error_code) { |
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|
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$result = array(); |
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|
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// 401 = authorization required |
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if ($error_code == 401) { |
| 355 |
|
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//print "<b>401</b>!!!<br/>"; |
| 357 |
//print Dumper($this); |
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|
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// V1 - authenticate using hardcoded plaintext values (bad thing inside here!!!) |
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$auth_ok = $this->_call('authenticate', array( user => 'hello', pass => '123' )); |
| 361 |
//$auth_ok = $this->_call('authenticate', array( user => 'hello', pass => '12345' )); |
| 362 |
|
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// authentication success? try issued method again now... |
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if ($auth_ok) { |
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$result[retry] = 1; |
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} |
| 367 |
|
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// V2 - sub-negotiation: |
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// "Do we already have a password supplied in cache?" |
| 370 |
// Use it if we have, otherwise redirect to login page |
| 371 |
// prompting for credentials for specified transport. |
| 372 |
//Header("Location: " . topicLink('Login')); |
| 373 |
//print "user: " . $this->USER . "<br/>"; |
| 374 |
//print "pass: " . $this->PASS . "<br/>"; |
| 375 |
|
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} |
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|
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// 511 = sent unknown session identifier (probably: session timed out) |
| 379 |
// solution: invalidate local session in state => new session will be attempted on next request |
| 380 |
if ($error_code == 511) { |
| 381 |
$this->meta[session][enabled] = 0; |
| 382 |
$this->_sleep(); |
| 383 |
} |
| 384 |
|
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return $result; |
| 386 |
|
| 387 |
} |
| 388 |
|
| 389 |
function _hook_errorcheck() { |
| 390 |
// Please look inside your {appname}/etc/hosts/{hostname}.php for toggling $this->DEBUG |
| 391 |
if ($error_code = $this->response->faultCode()) { |
| 392 |
// raise exception |
| 393 |
//print "fault-code: " . $this->response->faultCode() . "<br/>"; |
| 394 |
//print "fault-string: " . $this->response->faultString() . "<br/>"; |
| 395 |
$this->_raiseException($this->response->faultString(), $error_code); |
| 396 |
return $error_code; |
| 397 |
} |
| 398 |
} |
| 399 |
|
| 400 |
//if ($this->DEBUG && $error_code = $msg_response->faultCode()) { |
| 401 |
|
| 402 |
function _add_error($message, $code) { |
| 403 |
array_push( $this->errors, array(code => $code, message => $message) ); |
| 404 |
} |
| 405 |
|
| 406 |
function status() { |
| 407 |
$status = array( |
| 408 |
connected => $this->isConnected(), |
| 409 |
errors => $this->errors, |
| 410 |
); |
| 411 |
$status[RPCSESSID] = $this->meta[session][id]; |
| 412 |
return $status; |
| 413 |
} |
| 414 |
|
| 415 |
|
| 416 |
// TODO: introduce condition: just do if connection requires session and/or auth |
| 417 |
function _hook_request(&$request) { |
| 418 |
|
| 419 |
//print Dumper($request); |
| 420 |
|
| 421 |
// ignore core methods (like 'session_id') here to prevent recursive loops! |
| 422 |
// would be a bad thing on the net! |
| 423 |
if (in_array($request->methodname, array('ping', 'session_id'))) { return 1; } |
| 424 |
|
| 425 |
// calculate conditions |
| 426 |
$session_requested = 1; |
| 427 |
//$use_session = $this->meta[session][requested]; |
| 428 |
$session_running = $this->meta[session][enabled]; |
| 429 |
$session_error = $this->meta[session][error]; |
| 430 |
$init_session = $session_requested && !$session_running && !$session_error; |
| 431 |
|
| 432 |
// 1. if session already established, add sessionid to request and return |
| 433 |
if ($session_running) { |
| 434 |
//trace("Session " . $this->meta[session][id] . " already initialized!" . "<br/>"); |
| 435 |
// append additional parameter (hash with key 'RPCSESSID') |
| 436 |
// to send assigned sessionid back to server inside each request |
| 437 |
$data = array( RPCSESSID => $this->meta[session][id] ); |
| 438 |
$data_enc = XML_RPC_encode($data); |
| 439 |
//print Dumper($data_enc); |
| 440 |
$request->addParam($data_enc); |
| 441 |
//return 1; |
| 442 |
} |
| 443 |
|
| 444 |
|
| 445 |
// 2. if session is required/requested, but not yet initialized, |
| 446 |
// do it to be able to propagate the sessionid transparently later |
| 447 |
|
| 448 |
if ($init_session) { |
| 449 |
static $init_count; |
| 450 |
$init_count++; |
| 451 |
//trace("Initializing session: $init_count" . "<br/>"); |
| 452 |
//exit; |
| 453 |
$response = $this->_call('session_id'); |
| 454 |
//print "response: " . Dumper($response) . "<br/>"; |
| 455 |
//exit; |
| 456 |
|
| 457 |
if ($response) { |
| 458 |
$this->meta[session][id] = $response; |
| 459 |
$this->meta[session][enabled] = 1; |
| 460 |
} else { |
| 461 |
$this->meta[session][error] = 1; |
| 462 |
} |
| 463 |
|
| 464 |
$this->_sleep(); |
| 465 |
//print Dumper($this->meta); |
| 466 |
//exit; |
| 467 |
} |
| 468 |
|
| 469 |
//print Dumper($request); |
| 470 |
|
| 471 |
return 1; |
| 472 |
} |
| 473 |
|
| 474 |
function _hook_response(&$data) { |
| 475 |
//$status[RPCSESSID] = $this->meta[session][RPCSESSID]; |
| 476 |
} |
| 477 |
|
| 478 |
} |
| 479 |
|
| 480 |
?> |
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