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<?php
# ***** BEGIN LICENSE BLOCK *****
# This file is part of DotClear.
# Copyright (c) 2005 Olivier Meunier. All rights
# reserved.
#
# DotClear 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.
# 
# DotClear 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 DotClear; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
# ***** END LICENSE BLOCK *****

class dcUrlHandlers
{
	protected static function p404()
	{
		header('Content-Type: text/html; charset=UTF-8');
		http::head(404,'Not Found');
		$GLOBALS['core']->url->type = '404';
		echo $GLOBALS['core']->tpl->getData('404.html');
		exit;
	}
	
	protected static function getPageNumber(&$args)
	{
		if (preg_match('#(^|/)page/([0-9]+)$#',$args,$m)) {
			$n = (integer) $m[2];
			if ($n > 0) {
				$args = preg_replace('#(^|/)page/([0-9]+)$#','',$args);
				return $n;
			}
		}
		
		return false;
	}
	
	protected static function serveDocument($tpl,$content_type='text/html',$http_cache=true,$http_etag=true)
	{
		$_ctx =& $GLOBALS['_ctx'];
		$core =& $GLOBALS['core'];
		
		if ($_ctx->nb_entry_per_page === null) {
			$_ctx->nb_entry_per_page = $core->blog->settings->nb_post_per_page;
		}
		
		$tpl_file = $core->tpl->getFilePath($tpl);
		
		if (!$tpl_file) {
			header('Content-Type: text/plain; charset=UTF-8');
			echo 'Unable to find template';
			exit;
		}
		
		if ($http_cache) {
			$GLOBALS['mod_files'][] = $tpl_file;
			http::cache($GLOBALS['mod_files'],$GLOBALS['mod_ts']);
		}
		
		header('Content-Type: '.$content_type.'; charset=UTF-8');
		$out = $core->tpl->getData($tpl);
		
		if ($http_cache && $http_etag) {
			http::etag($out,http::getSelfURI());
		}
		echo $out;
	}
	
	public static function home($args)
	{
		$n = self::getPageNumber($args);
		
		if ($args && !$n)
		{
			self::p404();
		}
		else
		{
			$core =& $GLOBALS['core'];
			
			if ($n) {
				$GLOBALS['_page_number'] = $n;
				$core->url->type = $n > 1 ? 'defaut-page' : 'default';
			}
			
			if (empty($_GET['q'])) {
				self::serveDocument('home.html');
				$core->blog->publishScheduledEntries();
				exit;
			} else {
				self::search();
			}
		}
	}
	
	public static function search()
	{
		$GLOBALS['_search'] = !empty($_GET['q']) ? rawurldecode($_GET['q']) : '';
		self::serveDocument('search.html');
	}
	
	public static function lang($args)
	{
		$_ctx =& $GLOBALS['_ctx'];
		$core =& $GLOBALS['core'];
		
		$n = self::getPageNumber($args);
		
		$params['lang'] = $args;
		$_ctx->langs = $core->blog->getLangs($params);
		
		if ($_ctx->langs->isEmpty()) {
			self::p404();
		} else {
			if ($n) {
				$GLOBALS['_page_number'] = $n;
			}
			$_ctx->cur_lang = $args;
			self::home(null);
		}
	}
	
	public static function category($args)
	{
		$_ctx =& $GLOBALS['_ctx'];
		$core =& $GLOBALS['core'];
		
		$n = self::getPageNumber($args);
		
		if ($args == '' && !$n) {
			self::p404();
		}
		
		$params['cat_url'] = $args;
		
		$_ctx->categories = $core->blog->getCategories($params);
		
		if ($_ctx->categories->isEmpty()) {
			self::p404();
		} else {
			if ($n) {
				$GLOBALS['_page_number'] = $n;
			}
			self::serveDocument('category.html');
			exit;
		}
	}
	
	public static function archive($args)
	{
		$_ctx =& $GLOBALS['_ctx'];
		$core =& $GLOBALS['core'];
		
		$year = $month = $cat_url = null;
		# Nothing or year and month
		if ($args == '')
		{
			self::serveDocument('archive.html');
			exit;
		}
		elseif (preg_match('|^/([0-9]{4})/([0-9]{2})$|',$args,$m))
		{
			$params['year'] = $m[1];
			$params['month'] = $m[2];
			$params['type'] = 'month';
			$_ctx->archives = $core->blog->getDates($params);
			
			if ($_ctx->archives->isEmpty()) {
				self::p404();
			}
			
			self::serveDocument('archive_month.html');
			exit;
		}
		
		self::p404();
	}
	
	public static function post($args)
	{
		if ($args == '') {
			self::p404();
		}
		
		$_ctx =& $GLOBALS['_ctx'];
		$core =& $GLOBALS['core'];
		
		$core->blog->withoutPassword(false);
		
		$params = new ArrayObject();
		$params['post_url'] = $args;
		
		$_ctx->posts = $core->blog->getPosts($params);
		
		$_ctx->comment_preview = new ArrayObject();
		$_ctx->comment_preview['content'] = '';
		$_ctx->comment_preview['rawcontent'] = '';
		$_ctx->comment_preview['name'] = '';
		$_ctx->comment_preview['mail'] = '';
		$_ctx->comment_preview['site'] = '';
		$_ctx->comment_preview['preview'] = false;
		$_ctx->comment_preview['remember'] = false;
		
		$core->blog->withoutPassword(true);
		
		
		if ($_ctx->posts->isEmpty())
		{
			# No entry
			self::p404();
		}
		
		$post_id = $_ctx->posts->post_id;
		$post_password = $_ctx->posts->post_password;
		
		# Getting commenter informations from cookie
		if (!empty($_COOKIE['comment_info'])) {
			$c_cookie = unserialize($_COOKIE['comment_info']);
			foreach ($c_cookie as $k => $v) {
				$_ctx->comment_preview[$k] = $v;
			}
			$_ctx->comment_preview['remember'] = true;
		}
		
		# Password protected entry
		if ($post_password != '')
		{
			# Get passwords cookie
			if (isset($_COOKIE['dc_passwd'])) {
				$pwd_cookie = unserialize($_COOKIE['dc_passwd']);
			} else {
				$pwd_cookie = array();
			}
			
			# Check for match
			if ((!empty($_POST['password']) && $_POST['password'] == $post_password)
			|| (isset($pwd_cookie[$post_id]) && $pwd_cookie[$post_id] == $post_password))
			{
				$pwd_cookie[$post_id] = $post_password;
				setcookie('dc_passwd',serialize($pwd_cookie),0,'/');
			}
			else
			{
				self::serveDocument('password-form.html','text/html',false);
				exit;
			}
		}
		
		$post_comment =
			isset($_POST['c_name']) && isset($_POST['c_mail']) &&
			isset($_POST['c_site']) && isset($_POST['c_content']) &&
			$_ctx->posts->commentsActive();
		
		# Posting a comment
		if ($post_comment)
		{
			# Spam trap
			if (!empty($_POST['f_mail'])) {
				http::head(412,'Precondition Failed');
				header('Content-Type: text/plain');
				echo "So Long, and Thanks For All the Fish";
				exit;
			}
			
			$name = $_POST['c_name'];
			$mail = $_POST['c_mail'];
			$site = $_POST['c_site'];
			$content = $_POST['c_content'];
			$preview = !empty($_POST['preview']);
			
			# Storing commenter informations in cookie
			if (!empty($_POST['c_remember'])) {
				$c_cookie = array('name' => $name,'mail' => $mail,
				'site' => $site);
				
				$c_cookie = serialize($c_cookie);
				setcookie('comment_info',$c_cookie,strtotime('+3 month'),'/');
			}
			
			if ($content != '')
			{
				if ($core->blog->settings->wiki_comments) {
					$core->initWikiComment();
				} else {
					$core->initWikiSimpleComment();
				}
				$content = $core->wikiTransform($content);
				$content = $core->HTMLfilter($content);
			}
			
			$_ctx->comment_preview['content'] = $content;
			$_ctx->comment_preview['rawcontent'] = $_POST['c_content'];
			$_ctx->comment_preview['name'] = $name;
			$_ctx->comment_preview['mail'] = $mail;
			$_ctx->comment_preview['site'] = $site;
			
			if ($preview)
			{
				$_ctx->comment_preview['preview'] = true;
			}
			else
			{
				# Post the comment
				$cur = $core->con->openCursor($core->prefix.'comment');
				$cur->comment_author = $name;
				$cur->comment_site = html::clean($site);
				$cur->comment_email = html::clean($mail);
				$cur->comment_content = $content;
				$cur->post_id = $_ctx->posts->post_id;
				$cur->comment_status = $core->blog->settings->comments_pub ? 1 : -1;
				$cur->comment_ip = http::realIP();
				
				$redir = $_ctx->posts->getURL();
				$redir .= strpos($redir,'?') !== false ? '&' : '?';
				
				try
				{
					if (!text::isEmail($cur->comment_email)) {
						throw new Exception(__('You must provide a valid email adress.'));
					}
					
					# --BEHAVIOR-- publicBeforeCommentCreate
					$core->callBehavior('publicBeforeCommentCreate',$cur);
					
					$comment_id = $core->blog->addComment($cur);
					
					# --BEHAVIOR-- publicAfterCommentCreate
					$core->callBehavior('publicAfterCommentCreate',$cur,$comment_id);
					
					if ($cur->comment_status == 1) {
						$redir_arg = 'pub=1';
					} else {
						$redir_arg = 'pub=0';
					}
					
					header('Location: '.$redir.$redir_arg);
					exit;
				}
				catch (Exception $e)
				{
					$_ctx->form_error = $e->getMessage();
					$_ctx->form_error;
				}
			}
		}
		
		# The entry
		self::serveDocument('post.html');
		exit;
	}
	
	public static function feed($args)
	{
		$type = null;
		$comments = false;
		$cat_url = false;
		$post_id = null;
		$params = array();
		$subtitle = '';
		
		$mime = 'application/xml';
		
		$_ctx =& $GLOBALS['_ctx'];
		$core =& $GLOBALS['core'];
		
		if (preg_match('!^([a-z]{2}(-[a-z]{2})?)/(.*)$!',$args,$m)) {
			$params['lang'] = $m[1];
			$args = $m[3];

			$_ctx->langs = $core->blog->getLangs($params);
		
			if ($_ctx->langs->isEmpty()) {
				self::p404();
			} else {
				$_ctx->cur_lang = $m[1];
			}
		}

		if (preg_match('#^rss2/xslt$#',$args,$m))
		{
			# RSS XSLT stylesheet
			self::serveDocument('rss2.xsl','text/xml');
			exit;
		}
		elseif (preg_match('#^(atom|rss2)/comments/([0-9]+)$#',$args,$m))
		{
			# Post comments feed
			$type = $m[1];
			$comments = true;
			$post_id = (integer) $m[2];
		}
		elseif (preg_match('#^(?:category/(.+)/)?(atom|rss2)(/comments)?$#',$args,$m))
		{
			# All posts or comments feed
			$type = $m[2];
			$comments = !empty($m[3]);
			if (!empty($m[1])) {
				$cat_url = $m[1];
			}
		}
		else
		{
			self::p404();
		}
		
		if ($cat_url)
		{
			$params['cat_url'] = $cat_url;
			$_ctx->categories = $core->blog->getCategories($params);
			
			if ($_ctx->categories->isEmpty()) {
				self::p404();
			}
			
			$subtitle = ' - '.$_ctx->categories->cat_title;
		}
		elseif ($post_id)
		{
			$params['post_id'] = $post_id;
			$_ctx->posts = $core->blog->getPosts($params);
			
			if ($_ctx->posts->isEmpty()) {
				self::p404();
			}
			
			$subtitle = ' - '.$_ctx->posts->post_title;
		}
		
		$tpl = $type;
		if ($comments) {
			$tpl .= '-comments';
			$_ctx->nb_comment_per_page = $core->blog->settings->nb_comment_per_feed;
		} else {
			$_ctx->nb_entry_per_page = $core->blog->settings->nb_post_per_feed;
			$_ctx->short_feed_items = $core->blog->settings->short_feed_items;
		}
		$tpl .= '.xml';
		
		if ($type == 'atom') {
			$mime = 'application/atom+xml';
		}
		
		$_ctx->feed_subtitle = $subtitle;
		
		self::serveDocument($tpl,$mime);
		if (!$comments && !$cat_url) {
			$core->blog->publishScheduledEntries();
		}
		exit;
	}
	
	public static function trackback($args)
	{
		if (!preg_match('/^[0-9]+$/',$args)) {
			self::p404();
		} else {
			$tb = new dcTrackback($GLOBALS['core']);
			$tb->receive($args);
			exit;
		}
	}
	
	public static function rsd($args)
	{
		$core =& $GLOBALS['core'];
		http::cache($GLOBALS['mod_files'],$GLOBALS['mod_ts']);
		
		header('Content-Type: text/xml; charset=UTF-8');
		echo
		'<?xml version="1.0" encoding="UTF-8"?>'."\n".
		'<rsd version="1.0" xmlns="http://archipelago.phrasewise.com/rsd">'."\n".
		"<service>\n".
		"  <engineName>DotClear</engineName>\n".
		"  <engineLink>http://www.dotclear.net</engineLink>\n".
		'  <homePageLink>'.html::escapeHTML($core->blog->url)."</homePageLink>\n";
		
		if ($core->blog->settings->enable_xmlrpc)
		{
			$u = sprintf(DC_XMLRPC_URL,$core->blog->url,$core->blog->id);
			
			echo
			"  <apis>\n".
			'    <api name="Movable Type" blogID="1" preferred="true" apiLink="'.$u.'"/>'."\n".
			'    <api name="MetaWeblog" blogID="1" preferred="false" apiLink="'.$u.'"/>'."\n".
			'    <api name="Blogger" blogID="1" preferred="false" apiLink="'.$u.'"/>'."\n".
			"  </apis>\n";
		}
		
		echo
		"</service>\n".
		"</rsd>\n";
		exit;
	}
	
	public static function xmlrpc($args)
	{
		$core =& $GLOBALS['core'];
		$server = new dcXmlRpc($core,$args);
		$server->serve();
		exit;
	}
}
?>