Extension:CrudeProtection/source

<?php
if (!defined('MEDIAWIKI')) die("MediaWiki extensions cannot be run directly.");
/**
 * An extension to crudely protect pages from viewing by unathorised users.
 *
 * @package MediaWiki
 * @subpackage Extensions
 *
 * @author Mark Clements <mclements at kennel17 dot co dot uk>
 * @copyright Copyright © 2006, Mark Clements
 * @license http://creativecommons.org/licenses/by-sa/2.5/ cc-by-sa 2.5 or later
 */
 
	$wgExtensionCredits['other'][] = array(
		'name' => "CrudeProtection",
		'author' => "Mark Clements",
		'description' => "an extension to crudely protect pages from viewing by unathorised users",
		'url' => "http://www.mediawiki.org/wiki/Extension:CrudeProtection",
	);
 
	$pCrudeProtection_Messages = array(
		'crudeprotection_title' => "Access denied",
		'crudeprotection_text' 	=> "You do not have permission to view this page.",
	);
 
	$wgExtensionFunctions[] = "wfCrudeProtection";
 
	function wfCrudeProtection() {
		global $wgMessageCache, $wgParser, $wgHooks;
		global $pCrudeProtection_Messages;
 
		$wgMessageCache->addMessages($pCrudeProtection_Messages);
 
	// Parser hooks	
		$wgHooks['SkinTemplateContentActions'][] = "wfCrudeProtection_RemoveEditTab";
 
	// Specific tags to be parsed	
		$wgParser->setHook( "protect", "wfCrudeProtection_Protect" );
	}
 
	function wfCrudeProtection_Protect($Input, $Args) {
		global $wgOut, $wgUser;
		global $pBlocked;
 
	// Only respond to the first <protect> block.  Ignore all others.
		if (!isset($pBlocked)) {
			if (isset($Args['type'])) {
				$Type = strtolower($Args['type']);
				if ($Type != "allow" && $Type != "deny")
					$Type = "allow";
			}
			else
				$Type = "allow";
 
		// Allow "\n" to be specified as a line-break character.
			if (isset($Args['separator'])) {
				$Separator = $Args['separator'];
				if ($Separator == "\\n")
					$Separator = "\n";
			}
			else
				$Separator = ",";
 
		// Set appropriate default value, for if the user is not in the list of users.
			if ($Type == "allow")
				$pBlocked = true;
			elseif ($Type == "deny")
				$pBlocked = false;
 
		// Check if the user is in the list - if so, then swap their status.
			$Users = explode($Separator, $Input);
			foreach ($Users as $Key => $Value) {
				$Value = trim($Value);
				if ($wgUser->getName() == $Value && $Value != "") {
					$pBlocked = !$pBlocked;
					break;
				}
			}
 
		// If they are blocked, redirect to error page.		
			if ($pBlocked)
				$wgOut->errorpage("crudeprotection_title", "crudeprotection_text");
 
		}
		return "";
	}
 
	function wfCrudeProtection_RemoveEditTab(&$ContentActions) {
		global $pBlocked;
 
		if ($pBlocked) {
			unset($ContentActions['edit']);
			unset($ContentActions['viewsource']);
		}
 
		return true;
	}