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1245 lines
36 KiB
PHP
1245 lines
36 KiB
PHP
<?php
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/**
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* xajax.inc.php :: Main xajax class and setup file
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*
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* xajax version 0.2.4
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* copyright (c) 2005 by Jared White & J. Max Wilson
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* http://www.xajaxproject.org
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*
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* xajax is an open source PHP class library for easily creating powerful
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* PHP-driven, web-based Ajax Applications. Using xajax, you can asynchronously
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* call PHP functions and update the content of your your webpage without
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* reloading the page.
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*
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* xajax is released under the terms of the LGPL license
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* http://www.gnu.org/copyleft/lesser.html#SEC3
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* @package xajax
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* @version $Id$
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* @copyright Copyright (c) 2005-2006 by Jared White & J. Max Wilson
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* @license http://www.gnu.org/copyleft/lesser.html#SEC3 LGPL License
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*/
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/*
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----------------------------------------------------------------------------
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| Online documentation for this class is available on the xajax wiki at: |
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| http://wiki.xajaxproject.org/Documentation:xajax.inc.php |
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----------------------------------------------------------------------------
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*/
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// RalfBecker: We can't allow to define the charset "now", as the eGW header is not yet included
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// and we dont know the charset at this moment. It will be set in xajax.php after the header include!
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// Please note: The use of this constant is also removed from the constructor further down!
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///**
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// * Define XAJAX_DEFAULT_CHAR_ENCODING that is used by both
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// * the xajax and xajaxResponse classes
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// */
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//if (!defined ('XAJAX_DEFAULT_CHAR_ENCODING'))
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//{
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// define ('XAJAX_DEFAULT_CHAR_ENCODING', 'utf-8' );
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//}
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require_once(dirname(__FILE__)."/xajaxResponse.inc.php");
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/**
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* Communication Method Defines
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*/
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if (!defined ('XAJAX_GET'))
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{
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define ('XAJAX_GET', 0);
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}
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if (!defined ('XAJAX_POST'))
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{
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define ('XAJAX_POST', 1);
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}
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/**
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* The xajax class generates the xajax javascript for your page including the
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* Javascript wrappers for the PHP functions that you want to call from your page.
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* It also handles processing and executing the command messages in the XML responses
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* sent back to your page from your PHP functions.
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*
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* @package xajax
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*/
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class xajax
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{
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/**#@+
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* @access protected
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*/
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/**
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* @var array Array of PHP functions that will be callable through javascript wrappers
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*/
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var $aFunctions;
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/**
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* @var array Array of object callbacks that will allow Javascript to call PHP methods (key=function name)
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*/
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var $aObjects;
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/**
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* @var array Array of RequestTypes to be used with each function (key=function name)
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*/
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var $aFunctionRequestTypes;
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/**
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* @var array Array of Include Files for any external functions (key=function name)
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*/
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var $aFunctionIncludeFiles;
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/**
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* @var string Name of the PHP function to call if no callable function was found
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*/
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var $sCatchAllFunction;
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/**
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* @var string Name of the PHP function to call before any other function
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*/
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var $sPreFunction;
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/**
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* @var string The URI for making requests to the xajax object
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*/
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var $sRequestURI;
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/**
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* @var string The prefix to prepend to the javascript wraper function name
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*/
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var $sWrapperPrefix;
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/**
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* @var boolean Show debug messages (default false)
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*/
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var $bDebug;
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/**
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* @var boolean Show messages in the client browser's status bar (default false)
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*/
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var $bStatusMessages;
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/**
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* @var boolean Allow xajax to exit after processing a request (default true)
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*/
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var $bExitAllowed;
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/**
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* @var boolean Use wait cursor in browser (default true)
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*/
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var $bWaitCursor;
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/**
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* @var boolean Use an special xajax error handler so the errors are sent to the browser properly (default false)
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*/
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var $bErrorHandler;
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/**
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* @var string Specify what, if any, file xajax should log errors to (and more information in a future release)
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*/
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var $sLogFile;
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/**
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* @var boolean Clean all output buffers before outputting response (default false)
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*/
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var $bCleanBuffer;
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/**
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* @var string String containing the character encoding used
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*/
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var $sEncoding;
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/**
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* @var boolean Decode input request args from UTF-8 (default false)
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*/
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var $bDecodeUTF8Input;
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/**
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* @var boolean Convert special characters to HTML entities (default false)
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*/
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var $bOutputEntities;
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/**
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* @var array Array for parsing complex objects
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*/
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var $aObjArray;
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/**
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* @var integer Position in $aObjArray
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*/
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var $iPos;
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/**#@-*/
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/**
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* Constructor. You can set some extra xajax options right away or use
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* individual methods later to set options.
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*
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* @param string defaults to the current browser URI
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* @param string defaults to "xajax_";
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* @param string defaults to XAJAX_DEFAULT_CHAR_ENCODING defined above
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* @param boolean defaults to false
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*/
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// RalfBecker: using the not yet defined constant XAJAX_DEFAULT_CHAR_ENCODING, results in a warning, which messes up the xml
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// function xajax($sRequestURI="",$sWrapperPrefix="xajax_",$sEncoding=XAJAX_DEFAULT_CHAR_ENCODING,$bDebug=false)
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function xajax($sRequestURI="",$sWrapperPrefix="xajax_",$sEncoding='utf-8',$bDebug=false)
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{
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$this->aFunctions = array();
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$this->aObjects = array();
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$this->aFunctionIncludeFiles = array();
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$this->sRequestURI = $sRequestURI;
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if ($this->sRequestURI == "")
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$this->sRequestURI = $this->_detectURI();
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$this->sWrapperPrefix = $sWrapperPrefix;
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$this->bDebug = $bDebug;
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$this->bStatusMessages = false;
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$this->bWaitCursor = true;
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$this->bExitAllowed = true;
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$this->bErrorHandler = false;
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$this->sLogFile = "";
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$this->bCleanBuffer = false;
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$this->setCharEncoding($sEncoding);
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$this->bDecodeUTF8Input = false;
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$this->bOutputEntities = false;
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}
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/**
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* Sets the URI to which requests will be made.
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* <i>Usage:</i> <kbd>$xajax->setRequestURI("http://www.xajaxproject.org");</kbd>
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*
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* @param string the URI (can be absolute or relative) of the PHP script
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* that will be accessed when an xajax request occurs
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*/
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function setRequestURI($sRequestURI)
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{
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$this->sRequestURI = $sRequestURI;
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}
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/**
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* Sets the prefix that will be appended to the Javascript wrapper
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* functions (default is "xajax_").
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*
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* @param string
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*/
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//
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function setWrapperPrefix($sPrefix)
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{
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$this->sWrapperPrefix = $sPrefix;
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}
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/**
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* Enables debug messages for xajax.
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* */
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function debugOn()
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{
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$this->bDebug = true;
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}
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/**
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* Disables debug messages for xajax (default behavior).
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*/
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function debugOff()
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{
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$this->bDebug = false;
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}
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/**
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* Enables messages in the browser's status bar for xajax.
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*/
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function statusMessagesOn()
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{
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$this->bStatusMessages = true;
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}
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/**
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* Disables messages in the browser's status bar for xajax (default behavior).
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*/
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function statusMessagesOff()
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{
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$this->bStatusMessages = false;
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}
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/**
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* Enables the wait cursor to be displayed in the browser (default behavior).
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*/
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function waitCursorOn()
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{
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$this->bWaitCursor = true;
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}
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/**
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* Disables the wait cursor to be displayed in the browser.
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*/
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function waitCursorOff()
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{
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$this->bWaitCursor = false;
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}
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/**
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* Enables xajax to exit immediately after processing a request and
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* sending the response back to the browser (default behavior).
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*/
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function exitAllowedOn()
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{
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$this->bExitAllowed = true;
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}
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/**
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* Disables xajax's default behavior of exiting immediately after
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* processing a request and sending the response back to the browser.
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*/
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function exitAllowedOff()
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{
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$this->bExitAllowed = false;
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}
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/**
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* Turns on xajax's error handling system so that PHP errors that occur
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* during a request are trapped and pushed to the browser in the form of
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* a Javascript alert.
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*/
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function errorHandlerOn()
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{
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$this->bErrorHandler = true;
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}
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/**
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* Turns off xajax's error handling system (default behavior).
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*/
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function errorHandlerOff()
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{
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$this->bErrorHandler = false;
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}
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/**
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* Specifies a log file that will be written to by xajax during a request
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* (used only by the error handling system at present). If you don't invoke
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* this method, or you pass in "", then no log file will be written to.
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* <i>Usage:</i> <kbd>$xajax->setLogFile("/xajax_logs/errors.log");</kbd>
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*/
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function setLogFile($sFilename)
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{
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$this->sLogFile = $sFilename;
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}
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/**
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* Causes xajax to clean out all output buffers before outputting a
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* response (default behavior).
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*/
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function cleanBufferOn()
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{
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$this->bCleanBuffer = true;
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}
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/**
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* Turns off xajax's output buffer cleaning.
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*/
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function cleanBufferOff()
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{
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$this->bCleanBuffer = false;
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}
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/**
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* Sets the character encoding for the HTTP output based on
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* <kbd>$sEncoding</kbd>, which is a string containing the character
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* encoding to use. You don't need to use this method normally, since the
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* character encoding for the response gets set automatically based on the
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* <kbd>XAJAX_DEFAULT_CHAR_ENCODING</kbd> constant.
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* <i>Usage:</i> <kbd>$xajax->setCharEncoding("utf-8");</kbd>
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*
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* @param string the encoding type to use (utf-8, iso-8859-1, etc.)
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*/
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function setCharEncoding($sEncoding)
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{
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$this->sEncoding = $sEncoding;
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}
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/**
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* Causes xajax to decode the input request args from UTF-8 to the current
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* encoding if possible. Either the iconv or mb_string extension must be
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* present for optimal functionality.
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*/
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function decodeUTF8InputOn()
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{
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$this->bDecodeUTF8Input = true;
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}
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/**
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* Turns off decoding the input request args from UTF-8 (default behavior).
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*/
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function decodeUTF8InputOff()
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{
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$this->bDecodeUTF8Input = false;
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}
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/**
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* Tells the response object to convert special characters to HTML entities
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* automatically (only works if the mb_string extension is available).
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*/
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function outputEntitiesOn()
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{
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$this->bOutputEntities = true;
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}
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/**
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* Tells the response object to output special characters intact. (default
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* behavior).
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*/
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function outputEntitiesOff()
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{
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$this->bOutputEntities = false;
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}
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/**
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* Registers a PHP function or method to be callable through xajax in your
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* Javascript. If you want to register a function, pass in the name of that
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* function. If you want to register a static class method, pass in an
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* array like so:
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* <kbd>array("myFunctionName", "myClass", "myMethod")</kbd>
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* For an object instance method, use an object variable for the second
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* array element (and in PHP 4 make sure you put an & before the variable
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* to pass the object by reference). Note: the function name is what you
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* call via Javascript, so it can be anything as long as it doesn't
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* conflict with any other registered function name.
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*
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* <i>Usage:</i> <kbd>$xajax->registerFunction("myFunction");</kbd>
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* or: <kbd>$xajax->registerFunction(array("myFunctionName", &$myObject, "myMethod"));</kbd>
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*
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* @param mixed contains the function name or an object callback array
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* @param mixed request type (XAJAX_GET/XAJAX_POST) that should be used
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* for this function. Defaults to XAJAX_POST.
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*/
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function registerFunction($mFunction,$sRequestType=XAJAX_POST)
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{
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if (is_array($mFunction)) {
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$this->aFunctions[$mFunction[0]] = 1;
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$this->aFunctionRequestTypes[$mFunction[0]] = $sRequestType;
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$this->aObjects[$mFunction[0]] = array_slice($mFunction, 1);
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}
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else {
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$this->aFunctions[$mFunction] = 1;
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$this->aFunctionRequestTypes[$mFunction] = $sRequestType;
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}
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}
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/**
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* Registers a PHP function to be callable through xajax which is located
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* in some other file. If the function is requested the external file will
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* be included to define the function before the function is called.
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*
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* <i>Usage:</i> <kbd>$xajax->registerExternalFunction("myFunction","myFunction.inc.php",XAJAX_POST);</kbd>
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*
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* @param string contains the function name or an object callback array
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* ({@link xajax::registerFunction() see registerFunction} for
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* more info on object callback arrays)
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* @param string contains the path and filename of the include file
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* @param mixed the RequestType (XAJAX_GET/XAJAX_POST) that should be used
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* for this function. Defaults to XAJAX_POST.
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*/
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function registerExternalFunction($mFunction,$sIncludeFile,$sRequestType=XAJAX_POST)
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{
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$this->registerFunction($mFunction, $sRequestType);
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if (is_array($mFunction)) {
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$this->aFunctionIncludeFiles[$mFunction[0]] = $sIncludeFile;
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}
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else {
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$this->aFunctionIncludeFiles[$mFunction] = $sIncludeFile;
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}
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}
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/**
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* Registers a PHP function to be called when xajax cannot find the
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* function being called via Javascript. Because this is technically
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* impossible when using "wrapped" functions, the catch-all feature is
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* only useful when you're directly using the xajax.call() Javascript
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* method. Use the catch-all feature when you want more dynamic ability to
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* intercept unknown calls and handle them in a custom way.
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*
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* <i>Usage:</i> <kbd>$xajax->registerCatchAllFunction("myCatchAllFunction");</kbd>
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*
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* @param string contains the function name or an object callback array
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* ({@link xajax::registerFunction() see registerFunction} for
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* more info on object callback arrays)
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*/
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function registerCatchAllFunction($mFunction)
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{
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if (is_array($mFunction)) {
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$this->sCatchAllFunction = $mFunction[0];
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$this->aObjects[$mFunction[0]] = array_slice($mFunction, 1);
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}
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else {
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$this->sCatchAllFunction = $mFunction;
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}
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}
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/**
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* Registers a PHP function to be called before xajax calls the requested
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* function. xajax will automatically add the request function's response
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* to the pre-function's response to create a single response. Another
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* feature is the ability to return not just a response, but an array with
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* the first element being false (a boolean) and the second being the
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* response. In this case, the pre-function's response will be returned to
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* the browser without xajax calling the requested function.
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*
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* <i>Usage:</i> <kbd>$xajax->registerPreFunction("myPreFunction");</kbd>
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*
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* @param string contains the function name or an object callback array
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* ({@link xajax::registerFunction() see registerFunction} for
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* more info on object callback arrays)
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*/
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function registerPreFunction($mFunction)
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{
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if (is_array($mFunction)) {
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$this->sPreFunction = $mFunction[0];
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$this->aObjects[$mFunction[0]] = array_slice($mFunction, 1);
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}
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else {
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$this->sPreFunction = $mFunction;
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}
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}
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/**
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* Returns true if xajax can process the request, false if otherwise.
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* You can use this to determine if xajax needs to process the request or
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* not.
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*
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* @return boolean
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*/
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function canProcessRequests()
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{
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if ($this->getRequestMode() != -1) return true;
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return false;
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}
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/**
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* Returns the current request mode (XAJAX_GET or XAJAX_POST), or -1 if
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* there is none.
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*
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* @return mixed
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*/
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function getRequestMode()
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{
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if (!empty($_GET["xajax"]))
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return XAJAX_GET;
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if (!empty($_POST["xajax"]))
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return XAJAX_POST;
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return -1;
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}
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/**
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* This is the main communications engine of xajax. The engine handles all
|
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* incoming xajax requests, calls the apporiate PHP functions (or
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* class/object methods) and passes the XML responses back to the
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* Javascript response handler. If your RequestURI is the same as your Web
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* page then this function should be called before any headers or HTML has
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* been sent.
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*/
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function processRequests()
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{
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$requestMode = -1;
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$sFunctionName = "";
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$bFoundFunction = true;
|
|
$bFunctionIsCatchAll = false;
|
|
$sFunctionNameForSpecial = "";
|
|
$aArgs = array();
|
|
$sPreResponse = "";
|
|
$bEndRequest = false;
|
|
$sResponse = "";
|
|
|
|
$requestMode = $this->getRequestMode();
|
|
if ($requestMode == -1) return;
|
|
|
|
if ($requestMode == XAJAX_POST)
|
|
{
|
|
$sFunctionName = $_POST["xajax"];
|
|
|
|
if (!empty($_POST["xajaxargs"]))
|
|
$aArgs = $_POST["xajaxargs"];
|
|
}
|
|
else
|
|
{
|
|
header ("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
|
|
header ("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
|
|
header ("Cache-Control: no-cache, must-revalidate");
|
|
header ("Pragma: no-cache");
|
|
|
|
$sFunctionName = $_GET["xajax"];
|
|
|
|
if (!empty($_GET["xajaxargs"]))
|
|
$aArgs = $_GET["xajaxargs"];
|
|
}
|
|
|
|
// Use xajax error handler if necessary
|
|
if ($this->bErrorHandler) {
|
|
$GLOBALS['xajaxErrorHandlerText'] = "";
|
|
set_error_handler("xajaxErrorHandler");
|
|
}
|
|
|
|
if ($this->sPreFunction) {
|
|
if (!$this->_isFunctionCallable($this->sPreFunction)) {
|
|
$bFoundFunction = false;
|
|
$objResponse = new xajaxResponse();
|
|
$objResponse->addAlert("Unknown Pre-Function ". $this->sPreFunction);
|
|
$sResponse = $objResponse->getXML();
|
|
}
|
|
}
|
|
//include any external dependencies associated with this function name
|
|
if (array_key_exists($sFunctionName,$this->aFunctionIncludeFiles))
|
|
{
|
|
ob_start();
|
|
include_once($this->aFunctionIncludeFiles[$sFunctionName]);
|
|
ob_end_clean();
|
|
}
|
|
|
|
if ($bFoundFunction) {
|
|
$sFunctionNameForSpecial = $sFunctionName;
|
|
if (!array_key_exists($sFunctionName, $this->aFunctions))
|
|
{
|
|
if ($this->sCatchAllFunction) {
|
|
$sFunctionName = $this->sCatchAllFunction;
|
|
$bFunctionIsCatchAll = true;
|
|
}
|
|
else {
|
|
$bFoundFunction = false;
|
|
$objResponse = new xajaxResponse();
|
|
$objResponse->addAlert("Unknown Function $sFunctionName.");
|
|
$sResponse = $objResponse->getXML();
|
|
}
|
|
}
|
|
else if ($this->aFunctionRequestTypes[$sFunctionName] != $requestMode)
|
|
{
|
|
$bFoundFunction = false;
|
|
$objResponse = new xajaxResponse();
|
|
$objResponse->addAlert("Incorrect Request Type.");
|
|
$sResponse = $objResponse->getXML();
|
|
}
|
|
}
|
|
|
|
if ($bFoundFunction)
|
|
{
|
|
for ($i = 0; $i < sizeof($aArgs); $i++)
|
|
{
|
|
// If magic quotes is on, then we need to strip the slashes from the args
|
|
if (get_magic_quotes_gpc() == 1 && is_string($aArgs[$i])) {
|
|
|
|
$aArgs[$i] = stripslashes($aArgs[$i]);
|
|
}
|
|
if (stristr($aArgs[$i],"<xjxobj>") != false)
|
|
{
|
|
$aArgs[$i] = $this->_xmlToArray("xjxobj",$aArgs[$i]);
|
|
}
|
|
else if (stristr($aArgs[$i],"<xjxquery>") != false)
|
|
{
|
|
$aArgs[$i] = $this->_xmlToArray("xjxquery",$aArgs[$i]);
|
|
}
|
|
else if ($this->bDecodeUTF8Input)
|
|
{
|
|
$aArgs[$i] = $this->_decodeUTF8Data($aArgs[$i]);
|
|
}
|
|
}
|
|
|
|
if ($this->sPreFunction) {
|
|
$mPreResponse = $this->_callFunction($this->sPreFunction, array($sFunctionNameForSpecial, $aArgs));
|
|
if (is_array($mPreResponse) && $mPreResponse[0] === false) {
|
|
$bEndRequest = true;
|
|
$sPreResponse = $mPreResponse[1];
|
|
}
|
|
else {
|
|
$sPreResponse = $mPreResponse;
|
|
}
|
|
if (is_a($sPreResponse, "xajaxResponse")) {
|
|
$sPreResponse = $sPreResponse->getXML();
|
|
}
|
|
if ($bEndRequest) $sResponse = $sPreResponse;
|
|
}
|
|
|
|
if (!$bEndRequest) {
|
|
if (!$this->_isFunctionCallable($sFunctionName)) {
|
|
$objResponse = new xajaxResponse();
|
|
$objResponse->addAlert("The Registered Function $sFunctionName Could Not Be Found.");
|
|
$sResponse = $objResponse->getXML();
|
|
}
|
|
else {
|
|
if ($bFunctionIsCatchAll) {
|
|
$aArgs = array($sFunctionNameForSpecial, $aArgs);
|
|
}
|
|
$sResponse = $this->_callFunction($sFunctionName, $aArgs);
|
|
}
|
|
if (is_a($sResponse, "xajaxResponse")) {
|
|
$sResponse = $sResponse->getXML();
|
|
}
|
|
if (!is_string($sResponse) || strpos($sResponse, "<xjx>") === FALSE) {
|
|
$objResponse = new xajaxResponse();
|
|
$objResponse->addAlert("No XML Response Was Returned By Function $sFunctionName.");
|
|
$sResponse = $objResponse->getXML();
|
|
}
|
|
else if ($sPreResponse != "") {
|
|
$sNewResponse = new xajaxResponse($this->sEncoding, $this->bOutputEntities);
|
|
$sNewResponse->loadXML($sPreResponse);
|
|
$sNewResponse->loadXML($sResponse);
|
|
$sResponse = $sNewResponse->getXML();
|
|
}
|
|
}
|
|
}
|
|
|
|
$sContentHeader = "Content-type: text/xml;";
|
|
if ($this->sEncoding && strlen(trim($this->sEncoding)) > 0)
|
|
$sContentHeader .= " charset=".$this->sEncoding;
|
|
header($sContentHeader);
|
|
if ($this->bErrorHandler && !empty( $GLOBALS['xajaxErrorHandlerText'] )) {
|
|
$sErrorResponse = new xajaxResponse();
|
|
$sErrorResponse->addAlert("** PHP Error Messages: **" . $GLOBALS['xajaxErrorHandlerText']);
|
|
if ($this->sLogFile) {
|
|
$fH = @fopen($this->sLogFile, "a");
|
|
if (!$fH) {
|
|
$sErrorResponse->addAlert("** Logging Error **\n\nxajax was unable to write to the error log file:\n" . $this->sLogFile);
|
|
}
|
|
else {
|
|
fwrite($fH, "** xajax Error Log - " . strftime("%b %e %Y %I:%M:%S %p") . " **" . $GLOBALS['xajaxErrorHandlerText'] . "\n\n\n");
|
|
fclose($fH);
|
|
}
|
|
}
|
|
|
|
$sErrorResponse->loadXML($sResponse);
|
|
$sResponse = $sErrorResponse->getXML();
|
|
|
|
}
|
|
if ($this->bCleanBuffer) while (@ob_end_clean());
|
|
print $sResponse;
|
|
if ($this->bErrorHandler) restore_error_handler();
|
|
|
|
if ($this->bExitAllowed)
|
|
exit();
|
|
}
|
|
|
|
/**
|
|
* Prints the xajax Javascript header and wrapper code into your page by
|
|
* printing the output of the getJavascript() method. It should only be
|
|
* called between the <pre><head> </head></pre> tags in your HTML page.
|
|
* Remember, if you only want to obtain the result of this function, use
|
|
* {@link xajax::getJavascript()} instead.
|
|
*
|
|
* <i>Usage:</i>
|
|
* <code>
|
|
* <head>
|
|
* ...
|
|
* < ?php $xajax->printJavascript(); ? >
|
|
* </code>
|
|
*
|
|
* @param string the relative address of the folder where xajax has been
|
|
* installed. For instance, if your PHP file is
|
|
* "http://www.myserver.com/myfolder/mypage.php"
|
|
* and xajax was installed in
|
|
* "http://www.myserver.com/anotherfolder", then $sJsURI
|
|
* should be set to "../anotherfolder". Defaults to assuming
|
|
* xajax is in the same folder as your PHP file.
|
|
* @param string the relative folder/file pair of the xajax Javascript
|
|
* engine located within the xajax installation folder.
|
|
* Defaults to xajax_js/xajax.js.
|
|
*/
|
|
function printJavascript($sJsURI="", $sJsFile=NULL)
|
|
{
|
|
print $this->getJavascript($sJsURI, $sJsFile);
|
|
}
|
|
|
|
/**
|
|
* Returns the xajax Javascript code that should be added to your HTML page
|
|
* between the <kbd><head> </head></kbd> tags.
|
|
*
|
|
* <i>Usage:</i>
|
|
* <code>
|
|
* < ?php $xajaxJSHead = $xajax->getJavascript(); ? >
|
|
* <head>
|
|
* ...
|
|
* < ?php echo $xajaxJSHead; ? >
|
|
* </code>
|
|
*
|
|
* @param string the relative address of the folder where xajax has been
|
|
* installed. For instance, if your PHP file is
|
|
* "http://www.myserver.com/myfolder/mypage.php"
|
|
* and xajax was installed in
|
|
* "http://www.myserver.com/anotherfolder", then $sJsURI
|
|
* should be set to "../anotherfolder". Defaults to assuming
|
|
* xajax is in the same folder as your PHP file.
|
|
* @param string the relative folder/file pair of the xajax Javascript
|
|
* engine located within the xajax installation folder.
|
|
* Defaults to xajax_js/xajax.js.
|
|
* @return string
|
|
*/
|
|
function getJavascript($sJsURI="", $sJsFile=NULL)
|
|
{
|
|
$html = $this->getJavascriptConfig();
|
|
$html .= $this->getJavascriptInclude($sJsURI, $sJsFile);
|
|
|
|
return $html;
|
|
}
|
|
|
|
/**
|
|
* Returns a string containing inline Javascript that sets up the xajax
|
|
* runtime (typically called internally by xajax from get/printJavascript).
|
|
*
|
|
* @return string
|
|
*/
|
|
function getJavascriptConfig()
|
|
{
|
|
$html = "\t<script type=\"text/javascript\">\n";
|
|
$html .= "var xajaxRequestUri=\"".$this->sRequestURI."\";\n";
|
|
$html .= "var xajaxDebug=".($this->bDebug?"true":"false").";\n";
|
|
$html .= "var xajaxStatusMessages=".($this->bStatusMessages?"true":"false").";\n";
|
|
$html .= "var xajaxWaitCursor=".($this->bWaitCursor?"true":"false").";\n";
|
|
$html .= "var xajaxDefinedGet=".XAJAX_GET.";\n";
|
|
$html .= "var xajaxDefinedPost=".XAJAX_POST.";\n";
|
|
$html .= "var xajaxLoaded=false;\n";
|
|
|
|
foreach($this->aFunctions as $sFunction => $bExists) {
|
|
$html .= $this->_wrap($sFunction,$this->aFunctionRequestTypes[$sFunction]);
|
|
}
|
|
|
|
$html .= "\t</script>\n";
|
|
return $html;
|
|
}
|
|
|
|
/**
|
|
* Returns a string containing a Javascript include of the xajax.js file
|
|
* along with a check to see if the file loaded after six seconds
|
|
* (typically called internally by xajax from get/printJavascript).
|
|
*
|
|
* @param string the relative address of the folder where xajax has been
|
|
* installed. For instance, if your PHP file is
|
|
* "http://www.myserver.com/myfolder/mypage.php"
|
|
* and xajax was installed in
|
|
* "http://www.myserver.com/anotherfolder", then $sJsURI
|
|
* should be set to "../anotherfolder". Defaults to assuming
|
|
* xajax is in the same folder as your PHP file.
|
|
* @param string the relative folder/file pair of the xajax Javascript
|
|
* engine located within the xajax installation folder.
|
|
* Defaults to xajax_js/xajax.js.
|
|
* @return string
|
|
*/
|
|
function getJavascriptInclude($sJsURI="", $sJsFile=NULL)
|
|
{
|
|
if ($sJsFile == NULL) $sJsFile = "xajax_js/xajax.js";
|
|
|
|
if ($sJsURI != "" && substr($sJsURI, -1) != "/") $sJsURI .= "/";
|
|
|
|
$html = "\t<script type=\"text/javascript\" src=\"" . $sJsURI . $sJsFile . "\"></script>\n";
|
|
$html .= "\t<script type=\"text/javascript\">\n";
|
|
$html .= "window.setTimeout(function () { if (!xajaxLoaded) { alert('Error: the xajax Javascript file could not be included. Perhaps the URL is incorrect?\\nURL: {$sJsURI}{$sJsFile}'); } }, 6000);\n";
|
|
$html .= "\t</script>\n";
|
|
return $html;
|
|
}
|
|
|
|
/**
|
|
* This method can be used to create a new xajax.js file out of the
|
|
* xajax_uncompressed.js file (which will only happen if xajax.js doesn't
|
|
* already exist on the filesystem).
|
|
*
|
|
* @param string an optional argument containing the full server file path
|
|
* of xajax.js.
|
|
*/
|
|
function autoCompressJavascript($sJsFullFilename=NULL)
|
|
{
|
|
$sJsFile = "xajax_js/xajax.js";
|
|
|
|
if ($sJsFullFilename) {
|
|
$realJsFile = $sJsFullFilename;
|
|
}
|
|
else {
|
|
$realPath = realpath(dirname(__FILE__));
|
|
$realJsFile = $realPath . "/". $sJsFile;
|
|
}
|
|
|
|
// Create a compressed file if necessary
|
|
if (!file_exists($realJsFile)) {
|
|
$srcFile = str_replace(".js", "_uncompressed.js", $realJsFile);
|
|
if (!file_exists($srcFile)) {
|
|
trigger_error("The xajax uncompressed Javascript file could not be found in the <b>" . dirname($realJsFile) . "</b> folder. Error ", E_USER_ERROR);
|
|
}
|
|
require(dirname(__FILE__)."/xajaxCompress.php");
|
|
$javaScript = implode('', file($srcFile));
|
|
$compressedScript = xajaxCompressJavascript($javaScript);
|
|
$fH = @fopen($realJsFile, "w");
|
|
if (!$fH) {
|
|
trigger_error("The xajax compressed javascript file could not be written in the <b>" . dirname($realJsFile) . "</b> folder. Error ", E_USER_ERROR);
|
|
}
|
|
else {
|
|
fwrite($fH, $compressedScript);
|
|
fclose($fH);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the current URL based upon the SERVER vars.
|
|
*
|
|
* @access private
|
|
* @return string
|
|
*/
|
|
function _detectURI() {
|
|
$aURL = array();
|
|
|
|
// Try to get the request URL
|
|
if (!empty($_SERVER['REQUEST_URI'])) {
|
|
$aURL = parse_url($_SERVER['REQUEST_URI']);
|
|
}
|
|
|
|
// Fill in the empty values
|
|
if (empty($aURL['scheme'])) {
|
|
if (!empty($_SERVER['HTTP_SCHEME'])) {
|
|
$aURL['scheme'] = $_SERVER['HTTP_SCHEME'];
|
|
} else {
|
|
$aURL['scheme'] = (!empty($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) != 'off') ? 'https' : 'http';
|
|
}
|
|
}
|
|
|
|
if (empty($aURL['host'])) {
|
|
if (!empty($_SERVER['HTTP_HOST'])) {
|
|
if (strpos($_SERVER['HTTP_HOST'], ':') > 0) {
|
|
list($aURL['host'], $aURL['port']) = explode(':', $_SERVER['HTTP_HOST']);
|
|
} else {
|
|
$aURL['host'] = $_SERVER['HTTP_HOST'];
|
|
}
|
|
} else if (!empty($_SERVER['SERVER_NAME'])) {
|
|
$aURL['host'] = $_SERVER['SERVER_NAME'];
|
|
} else {
|
|
print "xajax Error: xajax failed to automatically identify your Request URI.";
|
|
print "Please set the Request URI explicitly when you instantiate the xajax object.";
|
|
exit();
|
|
}
|
|
}
|
|
|
|
if (empty($aURL['port']) && !empty($_SERVER['SERVER_PORT'])) {
|
|
$aURL['port'] = $_SERVER['SERVER_PORT'];
|
|
}
|
|
|
|
if (empty($aURL['path'])) {
|
|
if (!empty($_SERVER['PATH_INFO'])) {
|
|
$sPath = parse_url($_SERVER['PATH_INFO']);
|
|
} else {
|
|
$sPath = parse_url($_SERVER['PHP_SELF']);
|
|
}
|
|
$aURL['path'] = $sPath['path'];
|
|
unset($sPath);
|
|
}
|
|
|
|
if (!empty($aURL['query'])) {
|
|
$aURL['query'] = '?'.$aURL['query'];
|
|
}
|
|
|
|
// Build the URL: Start with scheme, user and pass
|
|
$sURL = $aURL['scheme'].'://';
|
|
if (!empty($aURL['user'])) {
|
|
$sURL.= $aURL['user'];
|
|
if (!empty($aURL['pass'])) {
|
|
$sURL.= ':'.$aURL['pass'];
|
|
}
|
|
$sURL.= '@';
|
|
}
|
|
|
|
// Add the host
|
|
$sURL.= $aURL['host'];
|
|
|
|
// Add the port if needed
|
|
if (!empty($aURL['port']) && (($aURL['scheme'] == 'http' && $aURL['port'] != 80) || ($aURL['scheme'] == 'https' && $aURL['port'] != 443))) {
|
|
$sURL.= ':'.$aURL['port'];
|
|
}
|
|
|
|
// Add the path and the query string
|
|
$sURL.= $aURL['path'].@$aURL['query'];
|
|
|
|
// Clean up
|
|
unset($aURL);
|
|
return $sURL;
|
|
}
|
|
|
|
/**
|
|
* Returns true if the function name is associated with an object callback,
|
|
* false if not.
|
|
*
|
|
* @param string the name of the function
|
|
* @access private
|
|
* @return boolean
|
|
*/
|
|
function _isObjectCallback($sFunction)
|
|
{
|
|
if (array_key_exists($sFunction, $this->aObjects)) return true;
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Returns true if the function or object callback can be called, false if
|
|
* not.
|
|
*
|
|
* @param string the name of the function
|
|
* @access private
|
|
* @return boolean
|
|
*/
|
|
function _isFunctionCallable($sFunction)
|
|
{
|
|
if ($this->_isObjectCallback($sFunction)) {
|
|
if (is_object($this->aObjects[$sFunction][0])) {
|
|
return method_exists($this->aObjects[$sFunction][0], $this->aObjects[$sFunction][1]);
|
|
}
|
|
else {
|
|
return is_callable($this->aObjects[$sFunction]);
|
|
}
|
|
}
|
|
else {
|
|
return function_exists($sFunction);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Calls the function, class method, or object method with the supplied
|
|
* arguments.
|
|
*
|
|
* @param string the name of the function
|
|
* @param array arguments to pass to the function
|
|
* @access private
|
|
* @return mixed the output of the called function or method
|
|
*/
|
|
function _callFunction($sFunction, $aArgs)
|
|
{
|
|
if ($this->_isObjectCallback($sFunction)) {
|
|
$mReturn = call_user_func_array($this->aObjects[$sFunction], $aArgs);
|
|
}
|
|
else {
|
|
$mReturn = call_user_func_array($sFunction, $aArgs);
|
|
}
|
|
return $mReturn;
|
|
}
|
|
|
|
/**
|
|
* Generates the Javascript wrapper for the specified PHP function.
|
|
*
|
|
* @param string the name of the function
|
|
* @param mixed the request type
|
|
* @access private
|
|
* @return string
|
|
*/
|
|
function _wrap($sFunction,$sRequestType=XAJAX_POST)
|
|
{
|
|
$js = "function ".$this->sWrapperPrefix."$sFunction(){return xajax.call(\"$sFunction\", arguments, ".$sRequestType.");}\n";
|
|
return $js;
|
|
}
|
|
|
|
/**
|
|
* Takes a string containing xajax xjxobj XML or xjxquery XML and builds an
|
|
* array representation of it to pass as an argument to the PHP function
|
|
* being called.
|
|
*
|
|
* @param string the root tag of the XML
|
|
* @param string XML to convert
|
|
* @access private
|
|
* @return array
|
|
*/
|
|
function _xmlToArray($rootTag, $sXml)
|
|
{
|
|
$aArray = array();
|
|
$sXml = str_replace("<$rootTag>","<$rootTag>|~|",$sXml);
|
|
$sXml = str_replace("</$rootTag>","</$rootTag>|~|",$sXml);
|
|
$sXml = str_replace("<e>","<e>|~|",$sXml);
|
|
$sXml = str_replace("</e>","</e>|~|",$sXml);
|
|
$sXml = str_replace("<k>","<k>|~|",$sXml);
|
|
$sXml = str_replace("</k>","|~|</k>|~|",$sXml);
|
|
$sXml = str_replace("<v>","<v>|~|",$sXml);
|
|
$sXml = str_replace("</v>","|~|</v>|~|",$sXml);
|
|
$sXml = str_replace("<q>","<q>|~|",$sXml);
|
|
$sXml = str_replace("</q>","|~|</q>|~|",$sXml);
|
|
|
|
$this->aObjArray = explode("|~|",$sXml);
|
|
|
|
$this->iPos = 0;
|
|
$aArray = $this->_parseObjXml($rootTag);
|
|
|
|
return $aArray;
|
|
}
|
|
|
|
/**
|
|
* A recursive function that generates an array from the contents of
|
|
* $this->aObjArray.
|
|
*
|
|
* @param string the root tag of the XML
|
|
* @access private
|
|
* @return array
|
|
*/
|
|
function _parseObjXml($rootTag)
|
|
{
|
|
$aArray = array();
|
|
|
|
if ($rootTag == "xjxobj")
|
|
{
|
|
while(!stristr($this->aObjArray[$this->iPos],"</xjxobj>"))
|
|
{
|
|
$this->iPos++;
|
|
if(stristr($this->aObjArray[$this->iPos],"<e>"))
|
|
{
|
|
$key = "";
|
|
$value = null;
|
|
|
|
$this->iPos++;
|
|
while(!stristr($this->aObjArray[$this->iPos],"</e>"))
|
|
{
|
|
if(stristr($this->aObjArray[$this->iPos],"<k>"))
|
|
{
|
|
$this->iPos++;
|
|
while(!stristr($this->aObjArray[$this->iPos],"</k>"))
|
|
{
|
|
$key .= $this->aObjArray[$this->iPos];
|
|
$this->iPos++;
|
|
}
|
|
}
|
|
if(stristr($this->aObjArray[$this->iPos],"<v>"))
|
|
{
|
|
$this->iPos++;
|
|
while(!stristr($this->aObjArray[$this->iPos],"</v>"))
|
|
{
|
|
if(stristr($this->aObjArray[$this->iPos],"<xjxobj>"))
|
|
{
|
|
$value = $this->_parseObjXml("xjxobj");
|
|
$this->iPos++;
|
|
}
|
|
else
|
|
{
|
|
$value .= $this->aObjArray[$this->iPos];
|
|
if ($this->bDecodeUTF8Input)
|
|
{
|
|
$value = $this->_decodeUTF8Data($value);
|
|
}
|
|
}
|
|
$this->iPos++;
|
|
}
|
|
}
|
|
$this->iPos++;
|
|
}
|
|
|
|
$aArray[$key]=$value;
|
|
}
|
|
}
|
|
}
|
|
|
|
if ($rootTag == "xjxquery")
|
|
{
|
|
$sQuery = "";
|
|
$this->iPos++;
|
|
while(!stristr($this->aObjArray[$this->iPos],"</xjxquery>"))
|
|
{
|
|
if (stristr($this->aObjArray[$this->iPos],"<q>") || stristr($this->aObjArray[$this->iPos],"</q>"))
|
|
{
|
|
$this->iPos++;
|
|
continue;
|
|
}
|
|
$sQuery .= $this->aObjArray[$this->iPos];
|
|
$this->iPos++;
|
|
}
|
|
|
|
parse_str($sQuery, $aArray);
|
|
if ($this->bDecodeUTF8Input)
|
|
{
|
|
foreach($aArray as $key => $value)
|
|
{
|
|
$aArray[$key] = $this->_decodeUTF8Data($value);
|
|
}
|
|
}
|
|
// If magic quotes is on, then we need to strip the slashes from the
|
|
// array values because of the parse_str pass which adds slashes
|
|
if (get_magic_quotes_gpc() == 1) {
|
|
$newArray = array();
|
|
foreach ($aArray as $sKey => $sValue) {
|
|
if (is_string($sValue))
|
|
$newArray[$sKey] = stripslashes($sValue);
|
|
else
|
|
$newArray[$sKey] = $sValue;
|
|
}
|
|
$aArray = $newArray;
|
|
}
|
|
}
|
|
|
|
return $aArray;
|
|
}
|
|
|
|
/**
|
|
* Decodes string data from UTF-8 to the current xajax encoding.
|
|
*
|
|
* @param string data to convert
|
|
* @access private
|
|
* @return string converted data
|
|
*/
|
|
function _decodeUTF8Data($sData)
|
|
{
|
|
$sValue = $sData;
|
|
if ($this->bDecodeUTF8Input)
|
|
{
|
|
$sFuncToUse = NULL;
|
|
|
|
if (function_exists('iconv'))
|
|
{
|
|
$sFuncToUse = "iconv";
|
|
}
|
|
else if (function_exists('mb_convert_encoding'))
|
|
{
|
|
$sFuncToUse = "mb_convert_encoding";
|
|
}
|
|
else if ($this->sEncoding == "ISO-8859-1")
|
|
{
|
|
$sFuncToUse = "utf8_decode";
|
|
}
|
|
else
|
|
{
|
|
trigger_error("The incoming xajax data could not be converted from UTF-8", E_USER_NOTICE);
|
|
}
|
|
|
|
if ($sFuncToUse)
|
|
{
|
|
if (is_string($sValue))
|
|
{
|
|
if ($sFuncToUse == "iconv")
|
|
{
|
|
$sValue = iconv("UTF-8", $this->sEncoding.'//TRANSLIT', $sValue);
|
|
}
|
|
else if ($sFuncToUse == "mb_convert_encoding")
|
|
{
|
|
$sValue = mb_convert_encoding($sValue, $this->sEncoding, "UTF-8");
|
|
}
|
|
else
|
|
{
|
|
$sValue = utf8_decode($sValue);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return $sValue;
|
|
}
|
|
|
|
}// end class xajax
|
|
|
|
/**
|
|
* This function is registered with PHP's set_error_handler() function if
|
|
* the xajax error handling system is turned on.
|
|
*/
|
|
function xajaxErrorHandler($errno, $errstr, $errfile, $errline)
|
|
{
|
|
$errorReporting = error_reporting();
|
|
if (($errno & $errorReporting) == 0) return;
|
|
|
|
if ($errno == E_NOTICE) {
|
|
$errTypeStr = "NOTICE";
|
|
}
|
|
else if ($errno == E_WARNING) {
|
|
$errTypeStr = "WARNING";
|
|
}
|
|
else if ($errno == E_USER_NOTICE) {
|
|
$errTypeStr = "USER NOTICE";
|
|
}
|
|
else if ($errno == E_USER_WARNING) {
|
|
$errTypeStr = "USER WARNING";
|
|
}
|
|
else if ($errno == E_USER_ERROR) {
|
|
$errTypeStr = "USER FATAL ERROR";
|
|
}
|
|
else if ($errno == E_STRICT) {
|
|
return;
|
|
}
|
|
else {
|
|
$errTypeStr = "UNKNOWN: $errno";
|
|
}
|
|
$GLOBALS['xajaxErrorHandlerText'] .= "\n----\n[$errTypeStr] $errstr\nerror in line $errline of file $errfile";
|
|
}
|
|
|
|
?>
|