<?php

if (!defined ('XAJAX_DEFAULT_CHAR_ENCODING'))
{
define ('XAJAX_DEFAULT_CHAR_ENCODING','utf-8');
}
require_once(dirname(__FILE__)."/xajaxResponse.inc.php");
if (!defined ('XAJAX_GET'))
{
define ('XAJAX_GET',0);
}
if (!defined ('XAJAX_POST'))
{
define ('XAJAX_POST',1);
}
class xajax
{
var $aFunctions;
var $aObjects;
var $aFunctionRequestTypes;
var $aFunctionIncludeFiles;
var $sCatchAllFunction;
var $sPreFunction;
var $sRequestURI;
var $sWrapperPrefix;
var $bDebug;
var $bStatusMessages;
var $bExitAllowed;
var $bWaitCursor;
var $bErrorHandler;
var $sLogFile;
var $bCleanBuffer;
var $sEncoding;
var $bDecodeUTF8Input;
var $bOutputEntities;
var $aObjArray;
var $iPos;
var $iTimeout;
function xajax($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->bDebug = $bDebug;
$this->bStatusMessages = false;
$this->bWaitCursor = true;
$this->bExitAllowed = true;
$this->bErrorHandler = false;
$this->sLogFile = "";
$this->bCleanBuffer = false;
$this->setCharEncoding($sEncoding);
$this->bDecodeUTF8Input = false;
$this->bOutputEntities = false;
$this->iTimeout = 6000;
}
function getVersion()
{
return 'xajax 0.2.5';
}
function setFlags($flags)
{
foreach ($flags as $name =>$value) {
$this->setFlag($name,$value);
}
}
function setFlag($name,$value)
{
$sVar = 'b'.ucfirst($name);
if (array_key_exists($sVar,get_object_vars($this))) {
$this->$sVar = (boolean)$value;
}
else {
trigger_error("The flag \"$name\" could not be found",E_USER_ERROR);
}
}
function getFlag($name)
{
$sVar = 'b'.ucfirst($name);
if (array_key_exists($sVar,get_object_vars($this))) {
return $this->$sVar;
}
else {
return NULL;
}
}
function setTimeout($iTimeout)
{
$this->iTimeout = $iTimeout;
}
function getTimeout()
{
return $this->iTimeout;
}
function setRequestURI($sRequestURI)
{
$this->sRequestURI = $sRequestURI;
}
function setWrapperPrefix($sPrefix)
{
$this->sWrapperPrefix = $sPrefix;
}
function debugOn()
{
$this->bDebug = true;
}
function debugOff()
{
$this->bDebug = false;
}
function statusMessagesOn()
{
$this->bStatusMessages = true;
}
function statusMessagesOff()
{
$this->bStatusMessages = false;
}
function waitCursorOn()
{
$this->bWaitCursor = true;
}
function waitCursorOff()
{
$this->bWaitCursor = false;
}
function exitAllowedOn()
{
$this->bExitAllowed = true;
}
function exitAllowedOff()
{
$this->bExitAllowed = false;
}
function errorHandlerOn()
{
$this->bErrorHandler = true;
}
function errorHandlerOff()
{
$this->bErrorHandler = false;
}
function setLogFile($sFilename)
{
$this->sLogFile = $sFilename;
}
function cleanBufferOn()
{
$this->bCleanBuffer = true;
}
function cleanBufferOff()
{
$this->bCleanBuffer = false;
}
function setCharEncoding($sEncoding)
{
$this->sEncoding = $sEncoding;
}
function decodeUTF8InputOn()
{
$this->bDecodeUTF8Input = true;
}
function decodeUTF8InputOff()
{
$this->bDecodeUTF8Input = false;
}
function outputEntitiesOn()
{
$this->bOutputEntities = true;
}
function outputEntitiesOff()
{
$this->bOutputEntities = false;
}
function registerFunction($mFunction,$sRequestType=XAJAX_POST)
{
if (is_string($sRequestType)) {
return $this->registerExternalFunction($mFunction,$sRequestType);
}
if (is_array($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] = $sRequestType;
}
}
function registerExternalFunction($mFunction,$sIncludeFile,$sRequestType=XAJAX_POST)
{
$this->registerFunction($mFunction,$sRequestType);
if (is_array($mFunction)) {
$this->aFunctionIncludeFiles[$mFunction[0]] = $sIncludeFile;
}
else {
$this->aFunctionIncludeFiles[$mFunction] = $sIncludeFile;
}
}
function registerCatchAllFunction($mFunction)
{
if (is_array($mFunction)) {
$this->sCatchAllFunction = $mFunction[0];
$this->aObjects[$mFunction[0]] = array_slice($mFunction,1);
}
else {
$this->sCatchAllFunction = $mFunction;
}
}
function registerPreFunction($mFunction)
{
if (is_array($mFunction)) {
$this->sPreFunction = $mFunction[0];
$this->aObjects[$mFunction[0]] = array_slice($mFunction,1);
}
else {
$this->sPreFunction = $mFunction;
}
}
function canProcessRequests()
{
if ($this->getRequestMode() != -1) return true;
return false;
}
function getRequestMode()
{
if (!empty($_GET["xajax"]))
return XAJAX_GET;
if (!empty($_POST["xajax"]))
return XAJAX_POST;
return -1;
}
function processRequest()
{
return $this->processRequests();
}
function processRequests()
{
$requestMode = -1;
$sFunctionName = "";
$bFoundFunction = true;
$bFunctionIsCatchAll = false;
$sFunctionNameForSpecial = "";
$aArgs = array();
$sPreResponse = "";
$bEndRequest = false;
$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 = $_GET["xajaxargs"];
}
if ($this->bErrorHandler) {
$GLOBALS['xajaxErrorHandlerText'] = "";
set_error_handler("xajaxErrorHandler");
}
if ($this->sPreFunction) {
if (!$this->_isFunctionCallable($this->sPreFunction)) {
$bFoundFunction = false;
$oResponse = new xajaxResponse();
$oResponse->addAlert("Unknown Pre-Function ".$this->sPreFunction);
}
}
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;
$oResponse = new xajaxResponse();
$oResponse->addAlert("Unknown Function $sFunctionName.");
}
}
}
if ($bFoundFunction)
{
for ($i = 0;$i <sizeof($aArgs);$i++)
{
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 = $mPreResponse;
}
if ($bEndRequest) $oResponse = $sPreResponse;
}
if (!$bEndRequest) {
if (!$this->_isFunctionCallable($sFunctionName)) {
$oResponse = new xajaxResponse();
$oResponse->addAlert("The Registered Function $sFunctionName Could Not Be Found.");
}
else {
if ($bFunctionIsCatchAll) {
$aArgs = array($sFunctionNameForSpecial,$aArgs);
}
$oResponse = $this->_callFunction($sFunctionName,$aArgs);
}
if (@is_string($sResponse)) {
$oResponse = new xajaxResponse();
$oResponse->addAlert("No XML Response Was Returned By Function $sFunctionName.\n\nOutput: ".$oResponse);
}
else if ($sPreResponse != "") {
$oNewResponse = new xajaxResponse($this->sEncoding,$this->bOutputEntities);
$oNewResponse->loadXML($sPreResponse);
$oNewResponse->loadXML($oResponse);
$oResponse = $sNewResponse;
}
}
}
$sContentHeader = "Content-type: text/xml;";
if ($this->sEncoding &&strlen(trim($this->sEncoding)) >0)
$sContentHeader .= " charset=".$this->sEncoding;
header($sContentHeader);
if ($this->bErrorHandler &&!empty( $GLOBALS['xajaxErrorHandlerText'] )) {
$oErrorResponse = new xajaxResponse();
$oErrorResponse->addAlert("** PHP Error Messages: **".$GLOBALS['xajaxErrorHandlerText']);
if ($this->sLogFile) {
$fH = @fopen($this->sLogFile,"a");
if (!$fH) {
$oErrorResponse->addAlert("** Logging Error **\n\nxajax was unable to write to the error log file:\n".$this->sLogFile);
}
else {
fwrite($fH,"** xajax Error Log - ".strftime("%b %e %Y %I:%M:%S %p") ." **".$GLOBALS['xajaxErrorHandlerText'] ."\n\n\n");
fclose($fH);
}
}
$oErrorResponse->loadXML($oResponse);
$oResponse = $oErrorResponse;
}
if ($this->bCleanBuffer) while (@ob_end_clean());
print $oResponse->getOutput();
if ($this->bErrorHandler) restore_error_handler();
if ($this->bExitAllowed)
exit();
}
function printJavascript($sJsURI="",$sJsFile=NULL)
{
print $this->getJavascript($sJsURI,$sJsFile);
}
function getJavascript($sJsURI="",$sJsFile=NULL)
{
$html = $this->getJavascriptConfig();
$html .= $this->getJavascriptInclude($sJsURI,$sJsFile);
return $html;
}
function getJavascript1($sJsURI="",$sJsFile=NULL)
{
$html  = "\t<script type=\"text/javascript\">\n";
$html .= "alert('".$sJsURI."');\n";
$html .= "\t</script>\n";
return $html;
}
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 $html;
}
function getJavascriptInclude($sJsURI="",$sJsFile=NULL)
{
if ($sJsFile == NULL) $sJsFile = "../js/xajax.js";
if ($sJsURI != ""&&substr($sJsURI,-1) != "/") $sJsURI .= "/";
$html = "\t<script type=\"text/javascript\" src=\"".$sJsURI .$sJsFile ."\"></script>\n";
if ($this->iTimeout != 0)
{
$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}{$sJsFile}'); } }, ".$this->iTimeout.");\n";
$html .= "\t</script>\n";
}
return $html;
}
function autoCompressJavascript($sJsFullFilename=NULL)
{
$sJsFile = "../js/xajax.js";
if ($sJsFullFilename) {
$realJsFile = $sJsFullFilename;
}
else {
$realPath = realpath(dirname(__FILE__));
$realJsFile = $realPath ."/".$sJsFile;
}
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.inc.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);
}
}
}
function _detectURI() {
$aURL = array();
if (!empty($_SERVER['REQUEST_URI'])) {
$_SERVER['REQUEST_URI'] = str_replace(array('"',"'",'<','>'),array('%22','%27','%3C','%3E'),$_SERVER['REQUEST_URI']);
$aURL = parse_url($_SERVER['REQUEST_URI']);
}
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($_SERVER['HTTP_X_FORWARDED_HOST'])) {
if (strpos($_SERVER['HTTP_X_FORWARDED_HOST'],':') >0) {
list($aURL['host'],$aURL['port']) = explode(':',$_SERVER['HTTP_X_FORWARDED_HOST']);
}else {
$aURL['host'] = $_SERVER['HTTP_X_FORWARDED_HOST'];
}
}else if (!empty($_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']);
}
$aURL['path'] = str_replace(array('"',"'",'<','>'),array('%22','%27','%3C','%3E'),$sPath['path']);
unset($sPath);
}
if (!empty($aURL['query'])) {
$aURL['query'] = '?'.$aURL['query'];
}
$sURL = $aURL['scheme'].'://';
if (!empty($aURL['user'])) {
$sURL.= $aURL['user'];
if (!empty($aURL['pass'])) {
$sURL.= ':'.$aURL['pass'];
}
$sURL.= '@';
}
$sURL.= $aURL['host'];
if (!empty($aURL['port']) &&(($aURL['scheme'] == 'http'&&$aURL['port'] != 80) ||($aURL['scheme'] == 'https'&&$aURL['port'] != 443))) {
$sURL.= ':'.$aURL['port'];
}
$sURL.= $aURL['path'].@$aURL['query'];
unset($aURL);
return $sURL;
}
function _isObjectCallback($sFunction)
{
if (array_key_exists($sFunction,$this->aObjects)) return true;
return false;
}
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);
}
}
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 $mReturn;
}
function _wrap($sFunction,$sRequestType=XAJAX_POST)
{
$js = "function ".$this->sWrapperPrefix."$sFunction(){return xajax.call(\"$sFunction\", arguments, ".$sRequestType.");}\n";
return $js;
}
function _xmlToArray($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 $aArray;
}
function _parseObjXml($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 (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 $aArray;
}
function _decodeUTF8Data($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 $sValue;
}
}
function xajaxErrorHandler($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";
}

?>