<?php
/*
 * MindTouch Deki - enterprise collaboration and integration platform
 *  derived from MediaWiki (www.mediawiki.org)
 * Copyright (C) 2006 MindTouch, Inc.
 * www.mindtouch.com  oss@mindtouch.com
 *
 * For community documentation and downloads visit www.opengarden.org;
 *  please review the licensing section.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 * http://www.gnu.org/copyleft/gpl.html
 */

#apd_set_pprof_trace();
# Main wiki script; see design.doc
#
$wgRequestTime = microtime();
unset( $IP );
@ini_set( 'allow_url_fopen', 0 ); # For security...

if (!file_exists( 'LocalSettings.php' ) || filesize( 'LocalSettings.php' ) <=0) {
	header('Location: config/index.php');
	exit();
}

# Valid web server entry point, enable includes.
# Please don't move this line to includes/Defines.php. This line essentially defines
# a valid entry point. If you put it in includes/Defines.php, then any script that includes
# it becomes an entry point, thereby defeating its purpose.
define( 'MEDIAWIKI', true );
require_once( 'includes/Defines.php' );
require_once( 'LocalSettings.php' );
require_once( 'includes/Setup.php' );
wfProfileIn( 'main-misc-setup' );
require_once( 'LocalNav.php' );

sajax_export(
	'wfAdminUserForm', 'wfSetUserOption', 'wfSetRestrictions', 'setUserOption', 'wfValidateUserOrGroup',
	'wfSaveEdit', 'wfQueryLinks', 'loadInplaceEditor', 'doSetbaseHref', 'showFileAttachments',
	'doSectionEdit', 'postComment', 'getComments', 'deleteComment', 'editComment', 'wfEmailPage',
	'wfCheckNewTitle', //check to see if titles exist for nav pane renaming
	'wfDeleteFile', 'wfSetPageProperties', 
	'wfDeleteTopic', 'wfRenameTopic', 'wfMoveAttachments', 'wfGetAttachmentUrl', 'wfInlineImageGallery', 'wfSetFileDescription',
	'wfChangeLoginView', 'wfChangeLoginViewToCreate', 'wfSaveCredsToSession', 'wfChangeAddServiceView', 'wfSaveLoginPageCreds', 'wfRemindPassword', 'wfChangeAvailUsersPage'
);

// MT (steveb): added AJAX handling
sajax_init($wgScript /*, true*/);
sajax_handle_client_request();
OutputPage::setEncodings(); # Not really used yet

# Query string fields
$action = $wgRequest->getVal( 'action', 'view' );
$title = $wgRequest->getVal( 'title' );
$action = strtolower( $action );
if ($wgRequest->getVal( 'printable' ) == 'yes') {
	$wgOut->setPrintable();
}

if ( wfHomePageInternalTitle() == $title && 'delete' != $action ) {
	$wgTitle = Title::newFromText( wfHomePageInternalTitle() );
} 
elseif ( $curid = $wgRequest->getInt( 'curid' ) ) {
	# URLs like this are generated by RC, because rc_title isn't always accurate
	$wgTitle = Title::newFromID( $curid );
} 
else {
    if ($contextID = $wgRequest->getInt( 'contextid' ))
	    $wgTitle = Title::newFromURL( $title, Title::newFromID( $contextID ) );
    else
	    $wgTitle = Title::newFromURL( $title );
}

/***
 * MT RoyK: Special sitemap handling for search engines
 * The sitemap xml file is required to be at the root of the domain, so the API url won't work. Instead, we need to load the contents and output.
 * So here, we catch the special case and call the API and return the document, gzipped. 
 * Using mod_rewrite isn't as easy (would need another PHP entry point, need to modify sites-available, and restart, etc.)
 */
$lpt = strtolower($wgTitle->getPrefixedText());

if ('sitemap.gz' == $lpt || 'sitemap.xml' == $lpt) {
	//create a new plug instead of using $wgDekiPlug cause we have to suppress the dream.out.format=php
	$Plug = new Plug($wgDreamServer, 'xml'); 
	$r = $Plug->At($wgDekiApi, 'pages')->With('format', 'sitemap')->Get();
	if ($lpt == 'sitemap.gz') {
		ob_start ("ob_gzhandler");
		header("Cache-Control: must-revalidate");
		header("Expires: " . gmdate("D, d M Y H:i:s", time() + (3600)) . " GMT");
	}
	header('Content-type: '.$r['type']);
	echo($r['body']);
	exit();
}

wfProfileOut( 'main-misc-setup' );
wfProfileIn( 'main-action' );

$search = $wgRequest->getText( 'search' );
if ( !is_null( $search ) && $search !== '' ) {
	$wgTitle = Title::makeTitle( NS_SPECIAL, 'Search' );
}

if ( !$wgTitle ) {
	$wgTitle = Title::newFromText( wfMsgForContent('Article.Error.input-bad-title') );
	$wgOut->errorpage('badtitle', 'Article.Error.page-title-is-invalid');
} else if ( $wgTitle->getInterwiki() != '' ) {
	$url = $wgTitle->getFullURL();
	# Check for a redirect loop
	if ( !preg_match( '/^' . preg_quote( $wgServer, '/' ) . '/', $url ) ) {
		$wgOut->redirect( $url );
	} else {
		$wgTitle = Title::newFromText( wfMsgForContent('Article.Error.input-bad-title') );
		$wgOut->errorpage('badtitle', 'Article.Error.page-title-is-invalid');
	}
} else if ( ( $action == 'view' ) &&
	(!isset( $_GET['title'] ) || strcasecmp(rawurldecode($wgTitle->getPrefixedDBKey()), $_GET['title']) != 0 ) &&
	!count( array_diff( array_keys( $_GET ), array( 'action', 'title' ) ) ) )
{
	$wgOut->redirect( $wgTitle->getFullURL(), '301');
} else { 
	
	if (!empty($wgPreloadPages)) 
	{
		$articleId = $wgTitle->getArticleId();
		foreach ($wgPreloadPages as $page) 
		{
			$at = new Article(Title::newFromText($page));
			$at->mTargetArticleId = $articleId;
			$at->loadContent();	
		}	
	}
	if ( NS_ADMIN == $wgTitle->getNamespace() ) {
		require_once( 'includes/SpecialPage.php' );
		AdminPage::executePath( $wgTitle );
	} else if ( NS_SPECIAL == $wgTitle->getNamespace() ) {
		# actions that need to be made when we have a special pages
		require_once( 'includes/SpecialPage.php' );
		SpecialPage::executePath( $wgTitle );
	} else {
		switch( $wgTitle->getNamespace() ) {
			case NS_ATTACHMENT:
				if (AttachFile::execute( $wgTitle, $action ))
					return;
				break;
			default:
				$wgArticle = new Article( $wgTitle );
		}
		
		# MT ursm: edit a new article by default
		if ($action == 'view' && $wgArticle->getID() <= 0 && $wgTitle->isEditable() && $wgArticle->userCanCreate()) {
	        $action = 'edit';
		}
		
		if ($action == 'edit' && $wgArticle->getId() > 0 && !$wgArticle->userCanEdit()) {
			$action = 'view';
		}
		
		switch( $action ) {
		    case 'noaction':
	            break;
			case 'view':
				$wgArticle->view();
				break;
			case 'comment':
				$editor = new CommentPage( $wgArticle->mTitle );
				$editor->submit();
			break;
			case 'watch':
			case 'unwatch':
	//		case 'delete':
			case 'revert':
			case 'rollback':
			case 'addsubpage':
				$wgArticle->$action();
				break;
			case 'export':
				$wgOut->mExport = true;
				$wgOut->mExportType = strtolower($wgRequest->getVal('type'));
				$wgArticle->view();
				if ($wgRequest->getVal('type') == 'pdf') {
					$wgOut->mExportType == 'pdf';
				}
				break;
			case 'print':
				$wgArticle->view();
				break;
			case 'submit':
				if( !$wgCommandLineMode && !$wgRequest->checkSessionCookie() ) {
					User::SetupSession();
				}
				# Continue...
			case 'edit':
				require_once( 'includes/EditPage.php' );
				$editor = new EditPage( $wgArticle );
				$editor->submit();
				break;
			case 'history':
				require_once( 'includes/PageHistory.php' );
				$history = new PageHistory( $wgArticle );
				$history->history();
				break;
			default:
				if (wfRunHooks('UnknownAction', $action, $wgArticle)) {
					$wgOut->errorpage('nosuchaction', 'Article.Error.unknown-action-specified');
				}
		}
	}
}
wfProfileOut( 'main-action' );

wfProfileIn( 'main-cleanup' );
$wgOut->output();
wfProfileOut( 'main-cleanup' );

logProfilingData();
$wgDatabase->close();
?>