WB 2.08.x

<?php

// $Id$

/*

 Website Baker Project <http://www.websitebaker.org/>

 Copyright (C) 2004-2007, Ryan Djurovich

 Website Baker 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.

 Website Baker 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 Website Baker; if not, write to the Free Software

 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/

/*

Frontend class

*/

if(!defined('WB_PATH')) {

	header('Location: ../index.php');

	exit(0);

}

require_once(WB_PATH.'/framework/class.wb.php');

class frontend extends wb {

	// defaults

	var $default_link,$default_page_id;

	// when multiple blocks are used, show home page blocks on 

	// pages where no content is defined (search, login, ...)

	var $default_block_content=true;

	// page details

	// page database row

	var $page;

	var $page_id,$page_title,$menu_title,$parent,$root_parent,$level,$visibility;

	var $page_description,$page_keywords,$page_link;

	var $page_trail=array();

	var $page_access_denied;

	// website settings

	var $website_title,$website_description,$website_keywords,$website_header,$website_footer;

	// ugly database stuff

	var $extra_where_sql, $sql_where_language;

	function page_select() {

		global $page_id,$no_intro;

		global $database;

		// We have no page id and are supposed to show the intro page

		if((INTRO_PAGE AND !isset($no_intro)) AND (!isset($page_id) OR !is_numeric($page_id))) {

			// Since we have no page id check if we should go to intro page or default page

			// Get intro page content

			$filename = WB_PATH.PAGES_DIRECTORY.'/intro.php';

			if(file_exists($filename)) {

				$handle = @fopen($filename, "r");

				$content = @fread($handle, filesize($filename));

				@fclose($handle);

				$this->preprocess($content);

				header("Location: pages/intro.php");   // send intro.php as header to allow parsing of php statements

				echo ($content);

				return false;

			}

		}

		// Check if we should add page language sql code

		if(PAGE_LANGUAGES) {

			$this->sql_where_language = " AND language = '".LANGUAGE."'";

		}

		// Get default page

		// Check for a page id

		$query_default = "SELECT page_id,link FROM ".TABLE_PREFIX."pages WHERE parent = '0' AND visibility = 'public'$this->sql_where_language ORDER BY position ASC LIMIT 1";

		$get_default = $database->query($query_default);

		$default_num_rows = $get_default->numRows();

		if(!isset($page_id) OR !is_numeric($page_id)){

			// Go to or show default page

			if($default_num_rows > 0) {

				$fetch_default = $get_default->fetchRow();

				$this->default_link = $fetch_default['link'];

				$this->default_page_id = $fetch_default['page_id'];

				// Check if we should redirect or include page inline

				if(HOMEPAGE_REDIRECTION) {

					// Redirect to page

					header("Location: ".$this->page_link($this->default_link));

					exit();

				} else {

					// Include page inline

					$this->page_id = $this->default_page_id;

				}

			} else {

		   		// No pages have been added, so print under construction page

				$this->print_under_construction();

				exit();

			}

		} else {

			$this->page_id=$page_id;

		}

		// Get default page link

		if(!isset($fetch_default)) {

		  	$fetch_default = $get_default->fetchRow();

	 		$this->default_link = $fetch_default['link'];

			$this->default_page_id = $fetch_default['page_id'];

		}

		return true;

	}

	function get_page_details() {

		global $database;

	    if($this->page_id != 0) {

			// Query page details

			$query_page = "SELECT * FROM ".TABLE_PREFIX."pages WHERE page_id = '{$this->page_id}'";

			$get_page = $database->query($query_page);

			// Make sure page was found in database

			if($get_page->numRows() == 0) {

				// Print page not found message

				exit("Page not found");

			}

			// Fetch page details

			$this->page = $get_page->fetchRow();

			// Check if the page language is also the selected language. If not, send headers again.

			if ($this->page['language']!=LANGUAGE) {

				header('Location: '.$this->page_link($this->page['link']).'?lang='.$this->page['language']);

				exit();

			}

			// Begin code to set details as either variables of constants

			// Page ID

			define('PAGE_ID', $this->page['page_id']);

			// Page Title

			define('PAGE_TITLE', $this->page['page_title']);

			$this->page_title=PAGE_TITLE;

			// Menu Title

			$menu_title = $this->page['menu_title'];

			if($menu_title != '') {

				define('MENU_TITLE', $menu_title);

			} else {

				define('MENU_TITLE', PAGE_TITLE);

			}

			$this->menu_title=MENU_TITLE;

			// Page parent

			define('PARENT', $this->page['parent']);

			$this->parent=$this->page['parent'];

			// Page root parent

			define('ROOT_PARENT', $this->page['root_parent']);

			$this->root_parent=$this->page['root_parent'];

			// Page level

			define('LEVEL', $this->page['level']);

			$this->level=$this->page['level'];

			// Page visibility

			define('VISIBILITY', $this->page['visibility']);

			$this->visibility=$this->page['visibility'];

			// Page trail

			foreach(explode(',', $this->page['page_trail']) AS $pid) {

				$this->page_trail[$pid]=$pid;

			}

			// Page description

			$this->page_description=$this->page['description'];

			if($this->page_description != '') {

				define('PAGE_DESCRIPTION', $this->page_description);

			} else {

				define('PAGE_DESCRIPTION', WEBSITE_DESCRIPTION);

			}

			// Page keywords

			$this->page_keywords=$this->page['keywords'];

			// Page link

			$this->link=$this->page_link($this->page['link']);

		// End code to set details as either variables of constants

		}

		// Figure out what template to use

		if(!defined('TEMPLATE')) {

			if(isset($this->page['template']) AND $this->page['template'] != '') {

				if(file_exists(WB_PATH.'/templates/'.$this->page['template'].'/index.php')) {

					define('TEMPLATE', $this->page['template']);

				} else {

					define('TEMPLATE', DEFAULT_TEMPLATE);

				}

			} else {

				define('TEMPLATE', DEFAULT_TEMPLATE);

			}

		}

		// Set the template dir

		define('TEMPLATE_DIR', WB_URL.'/templates/'.TEMPLATE);

		// Check if user is allowed to view this page

		if(VISIBILITY == 'private' OR VISIBILITY == 'registered') {

			// Check if the user is authenticated

			if($this->is_authenticated() == false) {

				// User needs to login first

				header("Location: ".WB_URL."/account/login".PAGE_EXTENSION.'?redirect='.$this->link);

				exit(0);

			}

			// Check if we should show this page

			if($this->show_page($this->page) == false) {

				$this->page_access_denied=true;

			}

		} elseif(VISIBILITY == 'deleted' OR VISIBILITY == 'none') {

			// User isnt allowed on this page so tell them

			$this->page_access_denied=true;

		}

	}

	function get_website_settings() {

		global $database;

		// set visibility SQL code

		// never show no-vis, hidden or deleted pages

		$this->extra_where_sql = "visibility != 'none' AND visibility != 'hidden' AND visibility != 'deleted'";

		// Set extra private sql code

		if($this->is_authenticated()==false) {

			// if user is not authenticated, don't show private pages either

			$this->extra_where_sql .= " AND visibility != 'private'";

			// and 'registered' without frontend login doesn't make much sense!

			if (FRONTEND_LOGIN==false) {

				$this->extra_where_sql .= " AND visibility != 'registered'";

			}

		}

		$this->extra_where_sql .= $this->sql_where_language;

		// Work-out if any possible in-line search boxes should be shown

		if(SEARCH == 'public') {

			define('SHOW_SEARCH', true);

		} elseif(SEARCH == 'private' AND VISIBILITY == 'private') {

			define('SHOW_SEARCH', true);

		} elseif(SEARCH == 'private' AND $this->is_authenticated() == true) {

			define('SHOW_SEARCH', true);

		} elseif(SEARCH == 'registered' AND $this->is_authenticated() == true) {

			define('SHOW_SEARCH', true);	

		} else {

			define('SHOW_SEARCH', false);

		}

		// Work-out if menu should be shown

		if(!defined('SHOW_MENU')) {

			define('SHOW_MENU', true);

		}

		// Work-out if login menu constants should be set

		if(FRONTEND_LOGIN) {

			// Set login menu constants

			define('LOGIN_URL', WB_URL.'/account/login'.PAGE_EXTENSION);

			define('LOGOUT_URL', WB_URL.'/account/logout'.PAGE_EXTENSION);

			define('FORGOT_URL', WB_URL.'/account/forgot'.PAGE_EXTENSION);

			define('PREFERENCES_URL', WB_URL.'/account/preferences'.PAGE_EXTENSION);

			define('SIGNUP_URL', WB_URL.'/account/signup'.PAGE_EXTENSION);

		}

	}

	function preprocess(&$content) {

		global $database;

		// Replace [wblink--PAGE_ID--] with real link

		$pattern = '/\[wblink(.+?)\]/s';

		preg_match_all($pattern,$content,$ids);

		foreach($ids[1] AS $page_id) {

			$pattern = '/\[wblink'.$page_id.'\]/s';

			// Get page link

			$get_link = $database->query("SELECT link FROM ".TABLE_PREFIX."pages WHERE page_id = '$page_id' LIMIT 1");

			$fetch_link = $get_link->fetchRow();

			$link = $this->page_link($fetch_link['link']);

			$content = preg_replace($pattern,$link,$content);

		}

	}

	function menu() {

		global $wb;

	   if (!isset($wb->menu_number)) {

	   	$wb->menu_number = 1;

	   }

	   if (!isset($wb->menu_start_level)) {

	   	$wb->menu_start_level = 0;

	   }

	   if (!isset($wb->menu_recurse)) {

	   	$wb->menu_recurse = -1;

	   }

	   if (!isset($wb->menu_collapse)) {

	   	$wb->menu_collapse = true;

	   }

	   if (!isset($wb->menu_item_template)) {

	   	$wb->menu_item_template = '<li><span[class]>[a] [menu_title] [/a]</span>';

	   }

	   if (!isset($wb->menu_item_footer)) {

	   	$wb->menu_item_footer = '</li>';

	   }

	   if (!isset($wb->menu_header)) {

	   	$wb->menu_header = '<ul>';

	   }

	   if (!isset($wb->menu_footer)) {

	   	$wb->menu_footer = '</ul>';

	   }

	   if (!isset($wb->menu_default_class)) {

	   	$wb->menu_default_class = ' class="menu_default"';

	   }

	   if (!isset($wb->menu_current_class)) {

	   	$wb->menu_current_class = ' class="menu_current"';

	   }

	   if (!isset($wb->menu_parent)) {

	   	$wb->menu_parent = 0;

	   }

	   $wb->show_menu();

	}

	function show_menu() {

		global $database;

		if ($this->menu_start_level>0) {

			$key_array=array_keys($this->page_trail);

			if (isset($key_array[$this->menu_start_level-1])) {

				$real_start=$key_array[$this->menu_start_level-1];

				$this->menu_parent=$real_start;

				$this->menu_start_level=0;

			} else {

				return;

			}

		}

		if ($this->menu_recurse==0)

	       return;

		// Check if we should add menu number check to query

		if($this->menu_parent == 0) {

			$menu_number = "menu = '$this->menu_number'";

		} else {

			$menu_number = '1';

		}

		// Query pages

		$query_menu = $database->query("SELECT page_id,menu_title,page_title,link,target,level,visibility,viewing_groups,viewing_users FROM ".TABLE_PREFIX."pages WHERE parent = '$this->menu_parent' AND $menu_number AND $this->extra_where_sql ORDER BY position ASC");

		// Check if there are any pages to show

		if($query_menu->numRows() > 0) {

			// Print menu header

			echo "\n".$this->menu_header;

			// Loop through pages

			while($page = $query_menu->fetchRow()) {

				// Check if this page should be shown

				// $this->extra_where_sql will show menu-title from private pages only if user is authenticated,

				// but we have to check if user is in viewing_groups or viewing_users for this page

				if($page['visibility'] == 'private') {

					$viewing_groups = explode(',', $page['viewing_groups']);

					$viewing_users = explode(',', $page['viewing_users']);

					if(!in_array($this->get_group_id(), $viewing_groups) && (!in_array($this->get_user_id(), $viewing_users))) {

						continue;

					}

				}

				// Create vars

				$vars = array('[class]','[a]', '[/a]', '[menu_title]', '[page_title]');

				// Work-out class

				if($page['page_id'] == PAGE_ID) {

					$class = $this->menu_current_class;

				} else {

					$class = $this->menu_default_class;

				}

				// Check if link is same as first page link, and if so change to WB URL

				if($page['link'] == $this->default_link AND !INTRO_PAGE) {

					$link = WB_URL;

				} else {

					$link = $this->page_link($page['link']);

				}

				// Create values

				$values = array($class,'<a href="'.$link.'" target="'.$page['target'].'" '.$class.'>', '</a>', $page['menu_title'], $page['page_title']);

				// Replace vars with value and print

				echo "\n".str_replace($vars, $values, $this->menu_item_template);

				// Generate sub-menu

				if($this->menu_collapse==false OR ($this->menu_collapse==true AND isset($this->page_trail[$page['page_id']]))) {

					$this->menu_recurse--;

					$this->menu_parent=$page['page_id'];

					$this->show_menu();

				}

				echo "\n".$this->menu_item_footer;

			}

			// Print menu footer

			echo "\n".$this->menu_footer;

		}

	}

	// Function to show the "Under Construction" page

	function print_under_construction() {

		global $MESSAGE;

		require_once(WB_PATH.'/languages/'.DEFAULT_LANGUAGE.'.php');

		echo '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

		<head><title>'.$MESSAGE['GENERIC']['WEBSITE_UNDER_CONSTRUCTION'].'</title>

		<style type="text/css"><!-- body { font-family: Verdana, Arial, Helvetica, sans-serif;

		font-size: 12px; color: #000000;	background-color: #FFFFFF;	margin: 20px; text-align: center; }

		h1 { margin: 0; padding: 0; }--></style></head><body>

		<h1>'.$MESSAGE['GENERIC']['WEBSITE_UNDER_CONSTRUCTION'].'</h1><br />

		'.$MESSAGE['GENERIC']['PLEASE_CHECK_BACK_SOON'].'</body></html>';

	}

}