WB 2.08.x

<?php

// $Id$

/*

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

 Copyright (C) 2004-2009, 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

*/

/*

Admin class

This class will be used for every program that will be included

in the administration section of Website Baker.

*/

if(!defined('WB_URL')) {

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

	exit(0);

}

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

// Include PHPLIB template class

require_once(WB_PATH."/include/phplib/template.inc");

// Get WB version

require_once(ADMIN_PATH.'/interface/version.php');

// Include EditArea wrapper functions

require_once(WB_PATH . '/include/editarea/wb_wrapper_edit_area.php');

/*

Begin user changeable settings

*/

class admin extends wb {

	// Authenticate user then auto print the header

	function admin($section_name, $section_permission = 'start', $auto_header = true, $auto_auth = true) {

		$this->wb();

		global $MESSAGE;

		// Specify the current applications name

		$this->section_name = $section_name;

		$this->section_permission = $section_permission;

		// Authenticate the user for this application

		if($auto_auth == true) {

			// First check if the user is logged-in

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

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

				exit(0);

			}

			// Now check if they are allowed in this section

			if($this->get_permission($section_permission) == false) {

				die($MESSAGE['ADMIN']['INSUFFICIENT_PRIVELLIGES']);

			}

		}

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

		global $database;

		$get_user_language = @$database->query("SELECT language FROM ".TABLE_PREFIX.

			"users WHERE user_id = '" .(int) $this->get_user_id() ."'");

		$user_language = ($get_user_language) ? $get_user_language->fetchRow() : '';

		// prevent infinite loop if language file is not XX.php (e.g. DE_du.php)

		$user_language = substr($user_language[0],0,2);

		// obtain the admin folder (e.g. /admin)

		$admin_folder = str_replace(WB_PATH, '', ADMIN_PATH);

		if((LANGUAGE != $user_language) && file_exists(WB_PATH .'/languages/' .$user_language .'.php')

			&& strpos($_SERVER['PHP_SELF'],$admin_folder.'/') !== false) {

			// check if page_id is set

			$page_id_url = (isset($_GET['page_id'])) ? '&page_id=' .(int) $_GET['page_id'] : '';

			$section_id_url = (isset($_GET['section_id'])) ? '&section_id=' .(int) $_GET['section_id'] : '';

			if(isset($_SERVER['QUERY_STRING']) && $_SERVER['QUERY_STRING'] != '') { // check if there is an query-string

				header('Location: '.$_SERVER['PHP_SELF'] .'?lang='.$user_language .$page_id_url .$section_id_url.'&'.$_SERVER['QUERY_STRING']);

			} else {

				header('Location: '.$_SERVER['PHP_SELF'] .'?lang='.$user_language .$page_id_url .$section_id_url);

			}

			exit();

		}

		// Auto header code

		if($auto_header == true) {

			$this->print_header();

		}

	}

	// Print the admin header

	function print_header($body_tags = '') {

		// Get vars from the language file

		global $MENU;

		global $MESSAGE;

		global $TEXT;

		// Connect to database and get website title

		global $database;

		$get_title = $database->query("SELECT value FROM ".TABLE_PREFIX."settings WHERE name = 'website_title'");

		$title = $get_title->fetchRow();

		$header_template = new Template(THEME_PATH.'/templates');

		$header_template->set_file('page', 'header.htt');

		$header_template->set_block('page', 'header_block', 'header');

		if(defined('DEFAULT_CHARSET')) {

			$charset=DEFAULT_CHARSET;

		} else {

			$charset='utf-8';

		}

		// work out the URL for the 'View menu' link in the WB backend

		// if the page_id is set, show this page otherwise show the root directory of WB

		$view_url = WB_URL;

		if(isset($_GET['page_id'])) {

			// extract page link from the database

			$result = @$database->query("SELECT link FROM " .TABLE_PREFIX ."pages WHERE page_id = '" .(int) addslashes($_GET['page_id']) ."'");

			$row = @$result->fetchRow();

			if($row) $view_url .= PAGES_DIRECTORY .$row['link']. PAGE_EXTENSION;

		}

		$header_template->set_var(	array(

													'SECTION_NAME' => $MENU[strtoupper($this->section_name)],

													'BODY_TAGS' => $body_tags,

													'WEBSITE_TITLE' => ($title['value']),

													'TEXT_ADMINISTRATION' => $TEXT['ADMINISTRATION'],

													'CURRENT_USER' => $MESSAGE['START']['CURRENT_USER'],

													'DISPLAY_NAME' => $this->get_display_name(),

													'CHARSET' => $charset,

													'LANGUAGE' => strtolower(LANGUAGE),

													'VERSION' => VERSION,

													'WB_URL' => WB_URL,

													'ADMIN_URL' => ADMIN_URL,

													'THEME_URL' => THEME_URL,

													'TITLE_START' => $MENU['START'],

													'TITLE_VIEW' => $MENU['VIEW'],

													'TITLE_HELP' => $MENU['HELP'],

													'TITLE_LOGOUT' =>  $MENU['LOGOUT'],

													'URL_VIEW' => $view_url,

													'URL_HELP' => 'http://help.websitebaker.org/',

													'BACKEND_MODULE_CSS' => $this->register_backend_modfiles('css'),	// adds backend.css

													'BACKEND_MODULE_JS'  => $this->register_backend_modfiles('js')		// adds backend.js

													)

											);

		// Create the menu

		$menu = array(

					array(ADMIN_URL.'/pages/index.php', '', $MENU['PAGES'], 'pages', 1),

					array(ADMIN_URL.'/media/index.php', '', $MENU['MEDIA'], 'media', 1),

					array(ADMIN_URL.'/addons/index.php', '', $MENU['ADDONS'], 'addons', 1),

					array(ADMIN_URL.'/preferences/index.php', '', $MENU['PREFERENCES'], 'preferences', 0),

					array(ADMIN_URL.'/settings/index.php', '', $MENU['SETTINGS'], 'settings', 1),

					array(ADMIN_URL.'/admintools/index.php', '', $MENU['ADMINTOOLS'], 'admintools', 1),

					array(ADMIN_URL.'/access/index.php', '', $MENU['ACCESS'], 'access', 1)

					);

		$header_template->set_block('header_block', 'linkBlock', 'link');

		foreach($menu AS $menu_item) {

			$link = $menu_item[0];

			$target = ($menu_item[1] == '') ? '_self' : $menu_item[1];

			$title = $menu_item[2];

			$permission_title = $menu_item[3];

			$required = $menu_item[4];

			$replace_old = array(ADMIN_URL, WB_URL, '/', 'index.php');

			if($required == false OR $this->get_link_permission($permission_title)) {

				$header_template->set_var('LINK', $link);

				$header_template->set_var('TARGET', $target);

				// If link is the current section apply a class name

				if($permission_title == strtolower($this->section_name)) {

					$header_template->set_var('CLASS', $menu_item[3] . ' current');

				} else {

					$header_template->set_var('CLASS', $menu_item[3]);

				}

				$header_template->set_var('TITLE', $title);

				// Print link

				$header_template->parse('link', 'linkBlock', true);

			}

		}

		$header_template->parse('header', 'header_block', false);

		$header_template->pparse('output', 'page');

	}

	// Print the admin footer

	function print_footer() {

		// include the required file for Javascript admin

		if(file_exists(WB_PATH.'/modules/jsadmin/jsadmin_backend_include.php')){

		@include(WB_PATH.'/modules/jsadmin/jsadmin_backend_include.php');

		}

		$footer_template = new Template(THEME_PATH.'/templates');

		$footer_template->set_file('page', 'footer.htt');

		$footer_template->set_block('page', 'footer_block', 'header');

		$footer_template->set_var(array(

						'BACKEND_BODY_MODULE_JS' => $this->register_backend_modfiles_body('js'),

						'WB_URL' => WB_URL,

						'WB_PATH' => WB_PATH,

						'ADMIN_URL' => ADMIN_URL,

						'THEME_URL' => THEME_URL,

			 ) );

		$footer_template->parse('header', 'footer_block', false);

		$footer_template->pparse('output', 'page');

	}

	// Return a system permission

	function get_permission($name, $type = 'system') {

		// Append to permission type

		$type .= '_permissions';

		// Check if we have a section to check for

		if($name == 'start') {

			return true;

		} else {

			// Set system permissions var

			$system_permissions = $this->get_session('SYSTEM_PERMISSIONS');

			// Set module permissions var

			$module_permissions = $this->get_session('MODULE_PERMISSIONS');

			// Set template permissions var

			$template_permissions = $this->get_session('TEMPLATE_PERMISSIONS');

			// Return true if system perm = 1

			if (isset($$type) && is_array($$type) && is_numeric(array_search($name, $$type))) {

				if($type == 'system_permissions') {

					return true;

				} else {

					return false;

				}

			} else {

				if($type == 'system_permissions') {

					return false;

				} else {

					return true;

				}

			}

		}

	}

	function get_user_details($user_id) {

		global $database;

		$query_user = "SELECT username,display_name FROM ".TABLE_PREFIX."users WHERE user_id = '$user_id'";

		$get_user = $database->query($query_user);

		if($get_user->numRows() != 0) {

			$user = $get_user->fetchRow();

		} else {

			$user['display_name'] = 'Unknown';

			$user['username'] = 'unknown';

		}

		return $user;

	}

	function get_page_details($page_id) {

		global $database;

		$query = "SELECT page_id,page_title,modified_by,modified_when FROM ".TABLE_PREFIX."pages WHERE page_id = '$page_id'";

		$results = $database->query($query);

		if($database->is_error()) {

			$this->print_header();

			$this->print_error($database->get_error());

		}

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

			$this->print_header();

			$this->print_error($MESSAGE['PAGES']['NOT_FOUND']);

		}

		$results_array = $results->fetchRow();

		return $results_array;

	}

	/** Function get_page_permission takes either a numerical page_id,

	 * upon which it looks up the permissions in the database,

	 * or an array with keys admin_groups and admin_users

	 */

	function get_page_permission($page,$action='admin') {

		if ($action!='viewing') $action='admin';

		$action_groups=$action.'_groups';

		$action_users=$action.'_users';

		if (is_array($page)) {

				$groups=$page[$action_groups];

				$users=$page[$action_users];

		} else {

			global $database;

			$results = $database->query("SELECT $action_groups,$action_users FROM ".TABLE_PREFIX."pages WHERE page_id = '$page'");

			$result = $results->fetchRow();

			$groups = explode(',', str_replace('_', '', $result[$action_groups]));

			$users = explode(',', str_replace('_', '', $result[$action_users]));

		}

		$in_group = FALSE;

		foreach($this->get_groups_id() as $cur_gid){

		    if (in_array($cur_gid, $groups)) {

		        $in_group = TRUE;

		    }

		}

		if((!$in_group) AND !is_numeric(array_search($this->get_user_id(), $users))) {

			return false;

		}

		return true;

	}

	// Returns a system permission for a menu link

	function get_link_permission($title) {

		$title = str_replace('_blank', '', $title);

		$title = strtolower($title);

		// Set system permissions var

		$system_permissions = $this->get_session('SYSTEM_PERMISSIONS');

		// Set module permissions var

		$module_permissions = $this->get_session('MODULE_PERMISSIONS');

		if($title == 'start') {

			return true;

		} else {

			// Return true if system perm = 1

			if(is_numeric(array_search($title, $system_permissions))) {

				return true;

			} else {

				return false;

			}

		}

	}

	// Function to add optional module Javascript or CSS stylesheets into the <body> section of the backend

	function register_backend_modfiles_body($file_id="js")

		{

		// sanity check of parameter passed to the function

		$file_id = strtolower($file_id);

		if($file_id !== "javascript" && $file_id !== "js")

		{

			return;

		}

		global $database;

        $body_links = "";

		// define default baselink and filename for optional module javascript and stylesheet files

		if($file_id == "js") {

			$base_link = '<script type="text/javascript" src="'.WB_URL.'/modules/{MODULE_DIRECTORY}/backend_body.js"></script>';

			$base_file = "backend_body.js";

		}

		// check if backend_body.js files needs to be included to the <body></body> section of the backend

		if(isset($_GET['tool']))

			{

			// check if displayed page contains a installed admin tool

			$result = $database->query("SELECT * FROM " .TABLE_PREFIX ."addons

				WHERE type = 'module' AND function = 'tool' AND directory = '".addslashes($_GET['tool'])."'");

			if($result->numRows())

				{

				// check if admin tool directory contains a backend_body.js file to include

				$tool = $result->fetchRow();

				if(file_exists(WB_PATH ."/modules/" .$tool['directory'] ."/$base_file"))

				{

					// return link to the backend_body.js file

					return str_replace("{MODULE_DIRECTORY}", $tool['directory'], $base_link);

				}

			}

		} elseif(isset($_GET['page_id']) or isset($_POST['page_id']))

		{

			// check if displayed page in the backend contains a page module

			if (isset($_GET['page_id']))

			{

				$page_id = (int) addslashes($_GET['page_id']);

			} else {

				$page_id = (int) addslashes($_POST['page_id']);

			}

			// gather information for all models embedded on actual page

			$query_modules = $database->query("SELECT module FROM " .TABLE_PREFIX ."sections

				WHERE page_id=$page_id");

			while($row = $query_modules->fetchRow()) {

				// check if page module directory contains a backend_body.js file

				if(file_exists(WB_PATH ."/modules/" .$row['module'] ."/$base_file")) {

					// create link with backend_body.js source for the current module

					$tmp_link = str_replace("{MODULE_DIRECTORY}", $row['module'], $base_link);

					// ensure that backend_body.js is only added once per module type

					if(strpos($body_links, $tmp_link) === false) {

						$body_links .= $tmp_link ."\n";

					}

				}

			}

			// write out links with all external module javascript/CSS files, remove last line feed

			return rtrim($body_links);

		}

	}

	// Function to add optional module Javascript or CSS stylesheets into the <head> section of the backend

	function register_backend_modfiles($file_id="css") {

		// sanity check of parameter passed to the function

		$file_id = strtolower($file_id);

		if($file_id !== "css" && $file_id !== "javascript" && $file_id !== "js") {

			return;

		}

		global $database;

		// define default baselink and filename for optional module javascript and stylesheet files

		$head_links = "";

		if($file_id == "css") {

      	$base_link = '<link href="'.WB_URL.'/modules/{MODULE_DIRECTORY}/backend.css"';

			$base_link.= ' rel="stylesheet" type="text/css" media="screen" />';

			$base_file = "backend.css";

		} else {

			$base_link = '<script type="text/javascript" src="'.WB_URL.'/modules/{MODULE_DIRECTORY}/backend.js"></script>';

			$base_file = "backend.js";

		}

		// check if backend.js or backend.css files needs to be included to the <head></head> section of the backend

		if(isset($_GET['tool'])) {

			// check if displayed page contains a installed admin tool

			$result = $database->query("SELECT * FROM " .TABLE_PREFIX ."addons

				WHERE type = 'module' AND function = 'tool' AND directory = '".addslashes($_GET['tool'])."'");

			if($result->numRows()) {

				// check if admin tool directory contains a backend.js or backend.css file to include

				$tool = $result->fetchRow();

				if(file_exists(WB_PATH ."/modules/" .$tool['directory'] ."/$base_file")) {

        			// return link to the backend.js or backend.css file

					return str_replace("{MODULE_DIRECTORY}", $tool['directory'], $base_link);

				}

			}

		} elseif(isset($_GET['page_id']) or isset($_POST['page_id'])) {

			// check if displayed page in the backend contains a page module

			if (isset($_GET['page_id'])) {

				$page_id = (int) addslashes($_GET['page_id']);

			} else {

				$page_id = (int) addslashes($_POST['page_id']);

			}

    		// gather information for all models embedded on actual page

			$query_modules = $database->query("SELECT module FROM " .TABLE_PREFIX ."sections

				WHERE page_id=$page_id");

    		while($row = $query_modules->fetchRow()) {

				// check if page module directory contains a backend.js or backend.css file

      		if(file_exists(WB_PATH ."/modules/" .$row['module'] ."/$base_file")) {

					// create link with backend.js or backend.css source for the current module

					$tmp_link = str_replace("{MODULE_DIRECTORY}", $row['module'], $base_link);

        			// ensure that backend.js or backend.css is only added once per module type

        			if(strpos($head_links, $tmp_link) === false) {

						$head_links .= $tmp_link ."\n";

					}

				}

    		}

    		// write out links with all external module javascript/CSS files, remove last line feed

			return rtrim($head_links);

		}

	}

}