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milfskleper/xajax/xajax.inc.php
humano 0ce02a9d98 escapado enter
2018-07-13 22:42:09 -05:00

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<?php
///////////////////////////////////////////////////////////////////////////////
// xajax.inc.php :: Main xajax class and setup file
//
// xajax version 0.2
// copyright (c) 2005 by Jared White & J. Max Wilson
// http://xajax.sourceforge.net
//
// xajax is an open source PHP class library for easily creating powerful
// PHP-driven, web-based AJAX Applications. Using xajax, you can asynchronously
// call PHP functions and update the content of your your webpage without
// reloading the page.
//
// xajax is released under the terms of the LGPL license
// http://www.gnu.org/copyleft/lesser.html#SEC3
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
///////////////////////////////////////////////////////////////////////////////
// Define XAJAX_DEFAULT_CHAR_ENCODING that is used by both
// the xajax and xajaxResponse classes
if (!defined ('XAJAX_DEFAULT_CHAR_ENCODING'))
{
define ('XAJAX_DEFAULT_CHAR_ENCODING', 'utf-8' );
}
require_once("xajaxResponse.inc.php");
// Communication Method Defines
if (!defined ('XAJAX_GET'))
{
define ('XAJAX_GET', 0);
}
if (!defined ('XAJAX_POST'))
{
define ('XAJAX_POST', 1);
}
// the xajax class generates the xajax javascript for your page including the
// javascript wrappers for the PHP functions that you want to call from your page.
// It also handles processing and executing the command messages in the xml responses
// sent back to your page from your PHP functions.
class xajax
{
var $aFunctions; // Array of PHP functions that will be callable through javascript wrappers
var $aObjects; // Array of object callbacks that will allow Javascript to call PHP methods (key=function name)
var $aFunctionRequestTypes; // Array of RequestTypes to be used with each function (key=function name)
var $aFunctionIncludeFiles; // Array of Include Files for any external functions (key=function name)
var $sCatchAllFunction; // Name of the PHP function to call if no callable function was found
var $sPreFunction; // Name of the PHP function to call before any other function
var $sRequestURI; // The URI for making requests to the xajax object
var $bDebug; // Show debug messages (true/false)
var $bExitAllowed; // Allow xajax to exit after processing a request (true/false)
var $bErrorHandler; // Use an special xajax error handler so the errors are sent to the browser properly
var $sLogFile; // Specify if xajax should log errors (and more information in a future release)
var $sWrapperPrefix; // The prefix to prepend to the javascript wraper function name
var $bStatusMessages; // Show debug messages (true/false)
var $bWaitCursor; // Use wait cursor in browser (true/false)
var $bCleanBuffer; // Clean all output buffers before outputting response (true/false)
var $aObjArray; // Array for parsing complex objects
var $iPos; // Position in $aObjArray
var $sEncoding; // The Character Encoding to use
// Contructor
// $sRequestURI - defaults to the current page
// $sWrapperPrefix - defaults to "xajax_";
// $sEncoding - defaults to XAJAX_DEFAULT_CHAR_ENCODING defined above
// $bDebug Mode - defaults to false
// usage: $xajax = new xajax();
function xajax($sRequestURI="",$sWrapperPrefix="xajax_",$sEncoding=XAJAX_DEFAULT_CHAR_ENCODING,$bDebug=false)
{
$this->aFunctions = array();
$this->aObjects = array();
$this->aFunctionIncludeFiles = array();
$this->sRequestURI = $sRequestURI;
if ($this->sRequestURI == "")
$this->sRequestURI = $this->_detectURI();
$this->sWrapperPrefix = $sWrapperPrefix;
$this->setCharEncoding($sEncoding);
$this->bDebug =$bDebug;
$this->bWaitCursor = true;
$this->bExitAllowed = true;
$this->bErrorHandler = false;
$this->sLogFile = "";
$this->bCleanBuffer = true;
}
// setRequestURI() sets the URI to which requests will be made
// usage: $xajax->setRequestURI("http://xajax.sourceforge.net");
function setRequestURI($sRequestURI)
{
$this->sRequestURI = $sRequestURI;
}
// debugOn() enables debug messages for xajax
function debugOn()
{
$this->bDebug = true;
}
// debugOff() disables debug messages for xajax (default behavior)
function debugOff()
{
$this->bDebug = true;
}
// statusMessagesOn() enables messages in the statusbar for xajax
function statusMessagesOn()
{
$this->bStatusMessages = true;
}
// statusMessagesOff() disables messages in the statusbar for xajax (default behavior)
function statusMessagesOff()
{
$this->bStatusMessages = false;
}
// waitCursor() enables the wait cursor to be displayed in the browser (default behavior)
function waitCursorOn()
{
$this->bWaitCursor = true;
}
// waitCursorOff() disables the wait cursor to be displayed in the browser
function waitCursorOff()
{
$this->bWaitCursor = false;
}
// exitAllowedOn() enables xajax to exit immediately after processing a request
// and sending the response back to the browser (default behavior)
function exitAllowedOn()
{
$this->bExitAllowed = true;
}
// exitAllowedOff() disables xajax's default behavior of exiting immediately
// after processing a request and sending the response back to the browser
function exitAllowedOff()
{
$this->bExitAllowed = false;
}
// errorHandlerOn() turns on xajax's error handling system so that PHP errors
// that occur during a request are trapped and pushed to the browser in the
// form of a Javascript alert
function errorHandlerOn()
{
$this->bErrorHandler = true;
}
// errorHandlerOff() turns off xajax's error handling system (default behavior)
function errorHandlerOff()
{
$this->bErrorHandler = false;
}
// setLogFile() specifies a log file that will be written to by xajax during
// a request (used only by the error handling system at present). If you don't
// invoke this method, or you pass in "", then no log file will be written to.
// usage: $xajax->setLogFile("/xajax_logs/errors.log");
function setLogFile($sFilename)
{
$this->sLogFile = $sFilename;
}
// cleanBufferOn() causes xajax to clean out all output buffers before outputting
// a response (default behavior)
function cleanBufferOn()
{
$this->bCleanBuffer = true;
}
// cleanBufferOff() turns off xajax's output buffer cleaning
function cleanBufferOff()
{
$this->bCleanBuffer = false;
}
// setWrapperPrefix() sets the prefix that will be appended to the Javascript
// wrapper functions (default is "xajax_").
function setWrapperPrefix($sPrefix)
{
$this->sWrapperPrefix = $sPrefix;
}
// setCharEncoding() sets the character encoding to be used by xajax
// usage: $xajax->setCharEncoding("utf-8");
// *Note: to change the default character encoding for all xajax responses, set
// the XAJAX_DEFAULT_CHAR_ENCODING constant near the beginning of the xajax.inc.php file
function setCharEncoding($sEncoding)
{
$this->sEncoding = $sEncoding;
}
// registerFunction() registers a PHP function or method to be callable through
// xajax in your Javascript. If you want to register a function, pass in the name
// of that function. If you want to register a static class method, pass in an array
// like so:
// array("myFunctionName", "myClass", "myMethod")
// For an object instance method, use an object variable for the second array element
// (and in PHP 4 make sure you put an & before the variable to pass the object by
// reference). Note: the function name is what you call via Javascript, so it can be
// anything as long as it doesn't conflict with any other registered function name.
//
// $mFunction is a string containing the function name or an object callback array
// $sRequestType is the RequestType (XAJAX_GET/XAJAX_POST) that should be used
// for this function. Defaults to XAJAX_POST.
// usage: $xajax->registerFunction("myFunction");
// or: $xajax->registerFunction(array("myFunctionName", &$myObject, "myMethod"));
function registerFunction($mFunction,$sRequestType=XAJAX_POST)
{
if (is_array($mFunction)) {
$this->aFunctions[$mFunction[0]] = 1;
$this->aFunctionRequestTypes[$mFunction[0]] = $sRequestType;
$this->aObjects[$mFunction[0]] = array_slice($mFunction, 1);
}
else {
$this->aFunctions[$mFunction] = 1;
$this->aFunctionRequestTypes[$mFunction] = $sRequestType;
}
}
// registerExternalFunction() registers a PHP function to be callable through xajax
// which is located in some other file. If the function is requested the external
// file will be included to define the function before the function is called
// $mFunction is a string containing the function name or an object callback array
// see registerFunction() for more info on object callback arrays
// $sIncludeFile is a string containing the path and filename of the include file
// $sRequestType is the RequestType (XAJAX_GET/XAJAX_POST) that should be used
// for this function. Defaults to XAJAX_POST.
// usage: $xajax->registerExternalFunction("myFunction","myFunction.inc.php",XAJAX_POST);
function registerExternalFunction($mFunction,$sIncludeFile,$sRequestType=XAJAX_POST)
{
$this->registerFunction($mFunction, $sRequestType);
if (is_array($mFunction)) {
$this->aFunctionIncludeFiles[$mFunction[0]] = $sIncludeFile;
}
else {
$this->aFunctionIncludeFiles[$mFunction] = $sIncludeFile;
}
}
// registerCatchAllFunction() registers a PHP function to be called when xajax cannot
// find the function being called via Javascript. Because this is technically
// impossible when using "wrapped" functions, the catch-all feature is only useful
// when you're directly using the xajax.call() Javascript method. Use the catch-all
// feature when you want more dynamic ability to intercept unknown calls and handle
// them in a custom way.
// $mFunction is a string containing the function name or an object callback array
// see registerFunction() for more info on object callback arrays
// usage: $xajax->registerCatchAllFunction("myCatchAllFunction");
function registerCatchAllFunction($mFunction)
{
if (is_array($mFunction)) {
$this->sCatchAllFunction = $mFunction[0];
$this->aObjects[$mFunction[0]] = array_slice($mFunction, 1);
}
else {
$this->sCatchAllFunction = $mFunction;
}
}
// registerPreFunction() registers a PHP function to be called before xajax calls
// the requested function. xajax will automatically add the request function's response
// to the pre-function's response to create a single response. Another feature is
// the ability to return not just a response, but an array with the first element
// being false (a boolean) and the second being the response. In this case, the
// pre-function's response will be returned to the browser without xajax calling
// the requested function.
// $mFunction is a string containing the function name or an object callback array
// see registerFunction() for more info on object callback arrays
// usage $xajax->registerPreFunction("myPreFunction");
function registerPreFunction($mFunction)
{
if (is_array($mFunction)) {
$this->sPreFunction = $mFunction[0];
$this->aObjects[$mFunction[0]] = array_slice($mFunction, 1);
}
else {
$this->sPreFunction = $mFunction;
}
}
// returns true if xajax can process the request, false if otherwise
// you can use this to determine if xajax needs to process the request or not
function canProcessRequests()
{
if ($this->getRequestMode() != -1) return true;
return false;
}
// returns the current request mode, or -1 if there is none
function getRequestMode()
{
if (!empty($_GET["xajax"]))
return XAJAX_GET;
if (!empty($_POST["xajax"]))
return XAJAX_POST;
return -1;
}
// processRequests() is the main communications engine of xajax
// The engine handles all incoming xajax requests, calls the apporiate PHP functions
// and passes the xml responses back to the javascript response handler
// if your RequestURI is the same as your web page then this function should
// be called before any headers or html has been sent.
// usage: $xajax->processRequests()
function processRequests()
{
$requestMode = -1;
$sFunctionName = "";
$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");
header("Content-type: text/xml");
$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[$i]);
}
}
if ($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();
$sNewResponse->loadXML($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();
}
// printJavascript() prints the xajax javascript code into your page by printing
// the output of the getJavascript() method. It should only be called between the
// <head> </head> tags in your HTML page. Remember, if you only want to obtain the
// result of this function, use getJavascript() instead.
// $sJsURI is 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.
// $sJsFile is the relative folder/file pair of the xajax Javascript engine located
// within the xajax installation folder. Defaults to xajax_js/xajax.js.
// usage:
// <head>
// ...
// < ?php $xajax->printJavascript(); ? >
function printJavascript($sJsURI="", $sJsFile=NULL, $sJsFullFilename=NULL)
{
print $this->getJavascript($sJsURI, $sJsFile, $sJsFullFilename);
}
// getJavascript() returns the xajax javascript code that should be added to
// your HTML page between the <head> </head> tags. See printJavascript()
// for information about the function arguments.
// usage:
// < ?php $xajaxJSHead = $xajax->getJavascript(); ? >
// <head>
// ...
// < ?php echo $xajaxJSHead; ? >
function getJavascript($sJsURI="", $sJsFile=NULL, $sJsFullFilename=NULL)
{
if ($sJsFile == NULL) $sJsFile = "xajax_js/xajax.js";
if ($sJsURI != "" && substr($sJsURI, -1) != "/") $sJsURI .= "/";
$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";
$html .= "var xajaxDefinedPost=".XAJAX_POST.";\n";
foreach($this->aFunctions as $sFunction => $bExists) {
$html .= $this->_wrap($sFunction,$this->aFunctionRequestTypes[$sFunction]);
}
$html .= "</script>\n";
// Create a compressed file if necessary
if ($sJsFullFilename) {
$realJsFile = $sJsFullFilename;
}
else {
$realPath = realpath(dirname(__FILE__));
$realJsFile = $realPath . "/". $sJsFile;
}
$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($realJsFile) . "</b> folder. Error ", E_USER_ERROR);
}
if ($this->bDebug) {
if (!@copy($srcFile, $realJsFile)) {
trigger_error("The xajax uncompressed javascript file could not be copied to the <b>" . dirname($realJsFile) . "</b> folder. Error ", E_USER_ERROR);
}
}
else if (!file_exists($realJsFile)) {
require(dirname($realJsFile) . "/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);
}
}
$html .= "\t<script type=\"text/javascript\" src=\"" . $sJsURI . $sJsFile . "\"></script>\n";
return $html;
}
// _detectURL() returns the current URL based upon the SERVER vars
// used internally
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 $sURL;
}
// returns true if the function name is associated with an object callback,
// false if not.
// user internally
function _isObjectCallback($sFunction)
{
if (array_key_exists($sFunction, $this->aObjects)) return true;
return false;
}
// return true if the function or object callback can be called, false if not
// user internally
function _isFunctionCallable($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($sFunction);
}
}
// calls the function, class method, or object method with the supplied arguments
// user internally
function _callFunction($sFunction, $aArgs)
{
if ($this->_isObjectCallback($sFunction)) {
$mReturn = call_user_func_array($this->aObjects[$sFunction], $aArgs);
}
else {
$mReturn = call_user_func_array($sFunction, $aArgs);
}
return $mReturn;
}
// generates the javascript wrapper for the specified PHP function
// used internally
function _wrap($sFunction,$sRequestType=XAJAX_POST)
{
$js = "function ".$this->sWrapperPrefix."$sFunction(){return xajax.call(\"$sFunction\", arguments, ".$sRequestType.");}\n";
return $js;
}
// _xmlToArray() takes a string containing xajax xjxobj xml or xjxquery xml
// and builds an array representation of it to pass as an argument to
// the php function being called. Returns an array.
// used internally
function _xmlToArray($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;
}
// _parseObjXml() is a recursive function that generates an array from the
// contents of $this->aObjArray. Returns an array.
// used internally
function _parseObjXml($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];
}
$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 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 $aArray;
}
}// end class xajax
// xajaxErrorHandler() is registered with PHP's set_error_handler() function if
// the xajax error handling system is turned on
// used by the xajax class
function xajaxErrorHandler($errno, $errstr, $errfile, $errline)
{
$errorReporting = error_reporting();
if ($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";
}
?>
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