Merge pull request #75 from 0xjove/error-overhaul

Error overhaul

inc/display.php

@@ -71,69 +71,6 @@ function createBoardlist($mod=false) {
 	);
 }
 
-function error($message, $priority = true, $debug_stuff = false) {
-	global $board, $mod, $config, $db_error;
-	
-	if ($config['syslog'] && $priority !== false) {
-		// Use LOG_NOTICE instead of LOG_ERR or LOG_WARNING because most error message are not significant.
-		_syslog($priority !== true ? $priority : LOG_NOTICE, $message);
-	}
-	
-	if (defined('STDIN')) {
-		// Running from CLI
-		echo('Error: ' . $message . "\n");
-		debug_print_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
-		die();
-	}
-
-	if ($config['debug'] && isset($db_error)) {
-		$debug_stuff = array_combine(array('SQLSTATE', 'Error code', 'Error message'), $db_error);
-	}
-
-	if ($config['debug']) {
-		$debug_stuff['backtrace'] = debug_backtrace();
-	}
-
-	// Return the bad request header, necessary for AJAX posts
-	// czaks: is it really so? the ajax errors only work when this is commented out
-	//		better yet use it when ajax is disabled
-	if (!isset ($_POST['json_response'])) {
-		header($_SERVER['SERVER_PROTOCOL'] . ' 400 Bad Request');
-	}
-	
-	// Is there a reason to disable this?
-	if (isset($_POST['json_response'])) {
-		header('Content-Type: text/json; charset=utf-8');
-		die(json_encode(array(
-			'error' => $message
-		)));
-	}
-	
-	$pw = $config['db']['password'];
-	$debug_callback = function(&$item) use (&$debug_callback, $pw) {
-		if (is_array($item)) {
-			$item = array_filter($item, $debug_callback);
-		}
-		return ($item !== $pw || !$pw);
-	};
-
-
-	if ($debug_stuff) 
-		$debug_stuff = array_filter($debug_stuff, $debug_callback);
-
-	die(Element('page.html', array(
-		'config' => $config,
-		'title' => _('Error'),
-		'subtitle' => _('An error has occured.'),
-		'body' => Element('error.html', array(
-			'config' => $config,
-			'message' => $message,
-			'mod' => $mod,
-			'board' => isset($board) ? $board : false,
-			'debug' => is_array($debug_stuff) ? str_replace("\n", '
', utf8tohtml(print_r($debug_stuff, true))) : utf8tohtml($debug_stuff)
-		))
-	)));
-}
 
 function loginForm($error=false, $username=false, $redirect=false) {
 	global $config;

inc/error.php

@@ -0,0 +1,92 @@
+<?PHP
+
+function error_handler($errno,$errstr,$errfile, $errline, $errcontext){
+	if(error_reporting() & $errno){
+		error($errstr . ' in ' . $errfile . ' at line ' . $errline);
+	}
+	return false;
+}
+
+set_error_handler('error_handler');
+
+function exception_handler(Exception $e){
+	error($e->getMessage());
+}
+
+set_exception_handler('exception_handler');
+
+function fatal_error_handler(){
+	if (($error = error_get_last()) && $error['type'] == E_ERROR) {
+		error('Caught fatal error: ' . $error['message'] . ' in ' . $error['file'] . ' at line ' . $error['line']);
+	}
+}
+
+register_shutdown_function('fatal_error_handler');
+
+$error_recursion=false;
+
+function error($message, $priority = true, $debug_stuff = false) {
+	global $board, $mod, $config, $db_error, $error_recursion;
+	
+	if($error_recursion!==false){
+		die("Error recursion detected with " . $message . "<br>Original error:".$error_recursion);
+	}
+	
+	$error_recursion=$message;
+	
+	if (defined('STDIN')) {
+		// Running from CLI
+		echo('Error: ' . $message . "\n");
+		debug_print_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
+		die();
+	}
+		
+	if(!empty($config)){
+	
+		if ($config['syslog'] && $priority !== false) {
+			// Use LOG_NOTICE instead of LOG_ERR or LOG_WARNING because most error message are not significant.
+			_syslog($priority !== true ? $priority : LOG_NOTICE, $message);
+		}
+
+		if ($config['debug']) {
+			$debug_stuff=array();
+			if(isset($db_error)){
+				$debug_stuff = array_combine(array('SQLSTATE', 'Error code', 'Error message'), $db_error);
+			}
+			$debug_stuff['backtrace'] = debug_backtrace();
+			$pw = $config['db']['password'];
+			$debug_callback = function(&$item) use (&$debug_callback, $pw) {
+				if (is_array($item)) {
+					return array_map($item, $debug_callback);
+				}
+				return ($item == $pw ? 'hunter2' : $item);
+			};
+			$debug_stuff = array_map($debug_stuff, $debug_callback);
+		}
+	}
+
+	if (isset($_POST['json_response'])) {
+		header('Content-Type: text/json; charset=utf-8');
+		$data=array('error'=>$message);
+		if(!empty($config) && $config['debug']){
+			$data['debug']=$debug_stuff;
+		}
+		print json_encode($data);
+		exit();
+	}
+
+	header($_SERVER['SERVER_PROTOCOL'] . ' 500 Internal Server Error');
+	
+	die(Element('page.html', array(
+		'config' => $config,
+		'title' => _('Error'),
+		'subtitle' => _('An error has occured.'),
+		'body' => Element('error.html', array(
+			'config' => $config,
+			'message' => $message,
+			'mod' => $mod,
+			'board' => isset($board) ? $board : false,
+			'debug' => str_replace("\n", '&#10;', utf8tohtml(print_r($debug_stuff, true)))
+		))
+	)));
+}

inc/functions.php

@@ -12,7 +12,7 @@ if (realpath($_SERVER['SCRIPT_FILENAME']) == str_replace('\\', '/', __FILE__)) {
 define('TINYBOARD', null);
 
 $microtime_start = microtime(true);
-
+require_once 'inc/error.php';
 require_once 'inc/cache.php';
 require_once 'inc/display.php';
 require_once 'inc/template.php';
@@ -26,11 +26,10 @@ if (!extension_loaded('gettext')) {
 // the user is not currently logged in as a moderator
 $mod = false;
 
-register_shutdown_function('fatal_error_handler');
 mb_internal_encoding('UTF-8');
 loadConfig();
 
-function init_locale($locale, $error='error') {
+function init_locale($locale) {
 	if (extension_loaded('gettext')) {
 		if (setlocale(LC_ALL, $locale) === false) {
 			//$error('The specified locale (' . $locale . ') does not exist on your platform!');
@@ -40,7 +39,7 @@ function init_locale($locale, $error='error') {
 		textdomain('tinyboard');
 	} else {
 		if (_setlocale(LC_ALL, $locale) === false) {
-			$error('The specified locale (' . $locale . ') does not exist on your platform!');
+			error('The specified locale (' . $locale . ') does not exist on your platform!');
 		}
 		_bindtextdomain('tinyboard', './inc/locale');
 		_bind_textdomain_codeset('tinyboard', 'UTF-8');
@@ -53,8 +52,6 @@ $current_locale = 'en';
 function loadConfig() {
 	global $board, $config, $__ip, $debug, $__version, $microtime_start, $current_locale, $events;
 
-	$error = function_exists('error') ? 'error' : 'basic_error_function_because_the_other_isnt_loaded_yet';
-
 	$boardsuffix = isset($board['uri']) ? $board['uri'] : '';
 
 	if (!isset($_SERVER['REMOTE_ADDR']))
@@ -77,7 +74,7 @@ function loadConfig() {
 
 		if ($config['locale'] != $current_locale) {
                 	$current_locale = $config['locale'];
-                	init_locale($config['locale'], $error);
+                	init_locale($config['locale']);
         	}
 	}
 	else {
@@ -118,7 +115,7 @@ function loadConfig() {
 		}
 
 		if (!file_exists('inc/instance-config.php'))
-			$error('Tinyboard is not configured! Create inc/instance-config.php.');
+			error('Tinyboard is not configured! Create inc/instance-config.php.');
 
 		// Initialize locale as early as possible
 
@@ -148,7 +145,7 @@ function loadConfig() {
 
 		if ($config['locale'] != $current_locale) {
 			$current_locale = $config['locale'];
-			init_locale($config['locale'], $error);
+			init_locale($config['locale']);
 		}
 
 		require 'inc/config.php';
@@ -161,7 +158,7 @@ function loadConfig() {
 
 		if ($config['locale'] != $current_locale) {
 			$current_locale = $config['locale'];
-			init_locale($config['locale'], $error);
+			init_locale($config['locale']);
 		}
 
 		if (!isset($config['global_message']))
@@ -271,7 +268,6 @@ function loadConfig() {
 		$_SERVER['REMOTE_ADDR'] = $m[2];
 
 	if ($config['verbose_errors']) {
-		set_error_handler('verbose_error_handler');
 		error_reporting(E_ALL);
 		ini_set('display_errors', true);
 		ini_set('html_errors', false);
@@ -332,36 +328,6 @@ function loadConfig() {
 	}
 }
 
-function basic_error_function_because_the_other_isnt_loaded_yet($message, $priority = true) {
-	global $config;
-
-	if ($config['syslog'] && $priority !== false) {
-		// Use LOG_NOTICE instead of LOG_ERR or LOG_WARNING because most error message are not significant.
-		_syslog($priority !== true ? $priority : LOG_NOTICE, $message);
-	}
-
-	// Yes, this is horrible.
-	die('<!DOCTYPE html><html><head><title>Error</title>' .
-		'<style type="text/css">' .
-			'body{text-align:center;font-family:arial, helvetica, sans-serif;font-size:10pt;}' .
-			'p{padding:0;margin:20px 0;}' .
-			'p.c{font-size:11px;}' .
-		'</style></head>' .
-		'<body><h2>Error</h2>' . $message . '<hr/>' .
-		'<p class="c">This alternative error page is being displayed because the other couldn\'t be found or hasn\'t loaded yet.</p></body></html>');
-}
-
-function fatal_error_handler() { 
-	if ($error = error_get_last()) {
-		if ($error['type'] == E_ERROR) {
-			if (function_exists('error')) {
-				error('Caught fatal error: ' . $error['message'] . ' in <strong>' . $error['file'] . '</strong> on line ' . $error['line'], LOG_ERR);
-			} else {
-				basic_error_function_because_the_other_isnt_loaded_yet('Caught fatal error: ' . $error['message'] . ' in ' . $error['file'] . ' on line ' . $error['line'], LOG_ERR);
-			}
-		}
-	}
-}
 
 function _syslog($priority, $message) {
 	if (isset($_SERVER['REMOTE_ADDR'], $_SERVER['REQUEST_METHOD'], $_SERVER['REQUEST_URI'])) {
@@ -372,16 +338,6 @@ function _syslog($priority, $message) {
 	}
 }
 
-function verbose_error_handler($errno, $errstr, $errfile, $errline) {
-	if (error_reporting() == 0)
-		return false; // Looks like this warning was suppressed by the @ operator.
-	error(utf8tohtml($errstr), true, array(
-		'file' => $errfile . ':' . $errline,
-		'errno' => $errno,
-		'error' => $errstr,
-		'backtrace' => array_slice(debug_backtrace(), 1)
-	));
-}
 
 function define_groups() {
 	global $config;