.-.-.-.-.-

<?php

/*
+---------------------------------------------------------------------------+
| Revive Adserver                                                           |
| http://www.revive-adserver.com                                            |
|                                                                           |
| Copyright: See the COPYRIGHT.txt file.                                    |
| License: GPLv2 or later, see the LICENSE.txt file.                        |
+---------------------------------------------------------------------------+
*/

// This class was originally taken from Seagull, with permission.
// See: http://seagull.phpkitchen.com

require_once RV_PATH . '/lib/RV.php';

require_once MAX_PATH . '/lib/OA.php';
require_once MAX_PATH . '/lib/Max.php';

require_once OX_PATH . '/lib/OX.php';

/**
 * Global error handler class, modifies behaviour for PHP errors, not PEAR.
 *
 * @package Openads
 * @author Peter James <petej@shaman.ca>
 * @author Demian Turner <demian@phpkitchen.com>
 */
class MAX_ErrorHandler
{
 var $errorType = array();
 var $sourceContextOptions = array();

/**
     * Constructor.
     *
     * @access  public
     * @return  void
     */
    function __construct()
    {
        //  first dimension elements are PHP error types
        //  2nd dimension elements are roughly PEAR Log's equivalents

//  nb: comment out Notice for equivalent of
        //  error_reporting(E_ALL ^ E_NOTICE);
        $this->errorType = array (
               1   =>  array('Error', 3),
               2   =>  array('Warning', 4),
               4   =>  array('Parsing Error', 3),
               8   =>  array('Notice', 5),
               16  =>  array('Core Error', 3),
               32  =>  array('Core Warning', 4),
               64  =>  array('Compile Error', 3),
               128 =>  array('Compile Warning', 4),
               256 =>  array('User Error', 3),
               512 =>  array('User Warning', 4),
               1024=>  array('User Notice', 5),
               2048=>  array('Strict', 5),
               4096=>  array('Recoverable', 5),
               8192=>  array('Deprecated', 5),
                );
        $this->sourceContextOptions = array('lines' => 5);
    }

/**
     * BC hack to assign custom error handler in a method.
     *
     * @access  public
     * @return  void
     */
    function startHandler()
    {
        set_error_handler(array($this, 'errHandler'));
    }

/**
     * Enhances PHP's default error handling.
     *
     *  o overrides notices in certain cases
     *  o obeys @muffled errors,
     *  o error logged to selected target
     *  o context info presented for developer
     *  o error data emailed to admin if theshold passed
     *
     * @access  public
     * @param   int     $errNo      PHP's error number
     * @param   string  $errStr     PHP's error message
     * @param   string  $file       filename where error occurred
     * @param   int     $line       line number where error occurred
     * @param   string  $context    contextual info
     * @return  void
     */
    function errHandler($errNo, $errStr, $file, $line, $context)
    {
        $conf = $GLOBALS['_MAX']['CONF'];
        // do not show notices
        if ($conf['debug']['errorOverride'] == true) {
            if ($errNo == E_NOTICE || $errNo >= E_STRICT) {
                return null;
            }
        }
        //  if an @ error suppression operator has been detected (0) return null
        if (error_reporting() == 0) {
            return null;
        }
        if (in_array($errNo, array_keys($this->errorType))) {
            //  final param is 2nd dimension element from errorType array,
            //  representing PEAR error codes mapped to PHP's

$oOA = new OA();
            $oOA->debug($errStr, $this->errorType[$errNo][1]);

// if a debug sesssion has been started, or the site in in
 // development mode, send error info to screen
 if (!$conf['debug']['production']) {
 $source = $this->_getSourceContext($file, $line);
 // generate screen debug html
 // type is 1st dimension element from $errorType array, ie,
 // PHP error code
 $output = <<<EOF
<hr />

 MESSAGE: $errStr 
 TYPE: {$this->errorType[$errNo][0]} 
 FILE: $file 
 LINE: $line 
 DEBUG INFO:
 $source

<hr />
EOF;
 echo $output;
 }

// email the error to admin if threshold reached
 // never send email if error occurred in test
 //
 $emailAdminThreshold = is_numeric($conf['debug']['emailAdminThreshold']) ? $conf['debug']['emailAdminThreshold'] :
 @constant($conf['debug']['emailAdminThreshold']);
 if ($conf['debug']['sendErrorEmails'] && !defined('TEST_ENVIRONMENT_RUNNING') && $this->errorType[$errNo][1] <= $emailAdminThreshold) {
 // get extra info
 $oDbh =& OA_DB::singleton();
 $lastQuery = $oDbh->last_query;
 $aExtraInfo['callingURL'] = $_SERVER['SCRIPT_NAME'];
 $aExtraInfo['lastSQL'] = isset($oDbh->last_query) ? $oDbh->last_query : null;
 $aExtraInfo['clientData']['HTTP_REFERER'] =& $_SERVER['HTTP_REFERER'];
 $aExtraInfo['clientData']['HTTP_USER_AGENT'] =& $_SERVER['HTTP_USER_AGENT'];
 $aExtraInfo['clientData']['REMOTE_ADDR'] =& $_SERVER['REMOTE_ADDR'];
 $aExtraInfo['clientData']['SERVER_PORT'] =& $_SERVER['SERVER_PORT'];

//  store formatted output
                ob_start();
                print_r($aExtraInfo);
                $info = ob_get_contents();
                ob_end_clean();

//  rebuild error output w/out html
                $crlf = "\n";
                $output = $errStr . $crlf .
                    'type: ' . $this->errorType[$errNo][0] . $crlf .
                    'file: ' . $file . $crlf .
                    'line: ' . $line . $crlf . $crlf;
                $message = $output . $info;
                @mail($conf['debug']['email'], $conf['debug']['emailSubject'], $message);
            }
        }
    }

/**
     * Provides enhanced error info for developer.
     *
     * Gives 10 lines before and after error occurred, hightlight erroroneous
     * line in red.
     *
     * @access  private
     * @param   string  $file       filename where error occurred
     * @param   int     $line       line number where error occurred
     * @param   string  $context    contextual info
     * @return  string  contextual error info
     */
    function _getSourceContext($file, $line)
    {
    	$sourceContext = null;

// check that file exists
 if (!file_exists($file)) {
 $sourceContext = "Context cannot be shown - ($file) does not exist";
 // check if line number is valid
 } elseif ((!is_int($line)) || ($line <= 0)) {
 $sourceContext = "Context cannot be shown - ($line) is an invalid line number";
 } else {
	 $lines = file($file);

// get the source ## core dump in windows, scrap colour highlighting :-(
	 // $source = highlight_file($file, true);
	 // $lines = split(" ", $source);
	 // get line numbers
	 $start = $line - $this->sourceContextOptions['lines'] - 1;
	 $finish = $line + $this->sourceContextOptions['lines'];

// get lines
	 if ($start < 0) {
	 $start = 0;
	 }

if ($start >= count($lines)) {
	            $start = count($lines) -1;
	        }

for ($i = $start; $i < $finish; $i++) {
	 // highlight line in question
	 if ($i == ($line - 1)) {
	 $context_lines[] = '<div class="error">' . ($i + 1) .
	 "\t" . strip_tags($lines[$line -1]) . '</div>';
	 } else {
	 $context_lines[] = '' . ($i + 1) .
	 "\t" . $lines[$i];
	 }
	 }

$sourceContext = trim(join(" \n", $context_lines)) . " \n";
 }

return $sourceContext;
    }
}
?>

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