xajax.inc.php

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		// 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);

		if ($this->bDecodeUTF8Input)
		{
			foreach ($aArray as $sKey => $sValue)
			{
				$aArray[$sKey] = $this->_decodeUTF8Data($sValue);
			}
		}

		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;
	}

	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

// 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)
{
	$errorReporting = error_reporting();
	if (($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";
}

?>