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<?php
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// $Id: class.admin.php 1166 2009-10-12 16:54:26Z Luisehahne $
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/*
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 Website Baker Project <http://www.websitebaker.org/>
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 Copyright (C) 2004-2009, Ryan Djurovich
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 Website Baker is free software; you can redistribute it and/or modify
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 it under the terms of the GNU General Public License as published by
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 the Free Software Foundation; either version 2 of the License, or
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 (at your option) any later version.
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 Website Baker is distributed in the hope that it will be useful,
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 but WITHOUT ANY WARRANTY; without even the implied warranty of
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 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 GNU General Public License for more details.
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 You should have received a copy of the GNU General Public License
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 along with Website Baker; if not, write to the Free Software
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 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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*/
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/*
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Admin class
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This class will be used for every program that will be included
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in the administration section of Website Baker.
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*/
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if(!defined('WB_URL')) {
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	header('Location: ../index.php');
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	exit(0);
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}
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require_once(WB_PATH.'/framework/class.wb.php');
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// Include PHPLIB template class
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require_once(WB_PATH."/include/phplib/template.inc");
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// Get WB version
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require_once(ADMIN_PATH.'/interface/version.php');
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// Include EditArea wrapper functions
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require_once(WB_PATH . '/include/editarea/wb_wrapper_edit_area.php');
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/*
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Begin user changeable settings
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*/
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55

    
56
class admin extends wb {
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	// Authenticate user then auto print the header
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	function admin($section_name, $section_permission = 'start', $auto_header = true, $auto_auth = true) {
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		$this->wb();
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		global $MESSAGE;
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		// Specify the current applications name
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		$this->section_name = $section_name;
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		$this->section_permission = $section_permission;
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		// Authenticate the user for this application
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		if($auto_auth == true) {
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			// First check if the user is logged-in
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			if($this->is_authenticated() == false) {
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				header('Location: '.ADMIN_URL.'/login/index.php');
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				exit(0);
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			}
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			// Now check if they are allowed in this section
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			if($this->get_permission($section_permission) == false) {
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				die($MESSAGE['ADMIN']['INSUFFICIENT_PRIVELLIGES']);
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			}
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		}
76
		
77
		// Check if the backend language is also the selected language. If not, send headers again.
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		global $database;
79
		$get_user_language = @$database->query("SELECT language FROM ".TABLE_PREFIX.
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			"users WHERE user_id = '" .(int) $this->get_user_id() ."'");
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		$user_language = ($get_user_language) ? $get_user_language->fetchRow() : '';
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		// prevent infinite loop if language file is not XX.php (e.g. DE_du.php)
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		$user_language = substr($user_language[0],0,2);
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		// obtain the admin folder (e.g. /admin)
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		$admin_folder = str_replace(WB_PATH, '', ADMIN_PATH);
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		if((LANGUAGE != $user_language) && file_exists(WB_PATH .'/languages/' .$user_language .'.php')
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			&& strpos($_SERVER['PHP_SELF'],$admin_folder.'/') !== false) {
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			// check if page_id is set
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			$page_id_url = (isset($_GET['page_id'])) ? '&page_id=' .(int) $_GET['page_id'] : '';
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			$section_id_url = (isset($_GET['section_id'])) ? '&section_id=' .(int) $_GET['section_id'] : '';
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			if(isset($_SERVER['QUERY_STRING']) && $_SERVER['QUERY_STRING'] != '') { // check if there is an query-string
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				header('Location: '.$_SERVER['PHP_SELF'] .'?lang='.$user_language .$page_id_url .$section_id_url.'&'.$_SERVER['QUERY_STRING']);
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			} else {
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				header('Location: '.$_SERVER['PHP_SELF'] .'?lang='.$user_language .$page_id_url .$section_id_url);
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			}
96
			exit();
97
		}
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99
		// Auto header code
100
		if($auto_header == true) {
101
			$this->print_header();
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		}
103
	}
104
	
105
	// Print the admin header
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	function print_header($body_tags = '') {
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		// Get vars from the language file
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		global $MENU;
109
		global $MESSAGE;
110
		global $TEXT;
111
		// Connect to database and get website title
112
		global $database;
113
		$get_title = $database->query("SELECT value FROM ".TABLE_PREFIX."settings WHERE name = 'website_title'");
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		$title = $get_title->fetchRow();
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		$header_template = new Template(THEME_PATH.'/templates');
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		$header_template->set_file('page', 'header.htt');
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		$header_template->set_block('page', 'header_block', 'header');
118
		if(defined('DEFAULT_CHARSET')) {
119
			$charset=DEFAULT_CHARSET;
120
		} else {
121
			$charset='utf-8';
122
		}
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124
		// work out the URL for the 'View menu' link in the WB backend
125
		// if the page_id is set, show this page otherwise show the root directory of WB
126
		$view_url = WB_URL;
127
		if(isset($_GET['page_id'])) {
128
			// extract page link from the database
129
			$result = @$database->query("SELECT link FROM " .TABLE_PREFIX ."pages WHERE page_id = '" .(int) addslashes($_GET['page_id']) ."'");
130
			$row = @$result->fetchRow();
131
			if($row) $view_url .= PAGES_DIRECTORY .$row['link']. PAGE_EXTENSION;
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		}
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134
		$header_template->set_var(	array(
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													'SECTION_NAME' => $MENU[strtoupper($this->section_name)],
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													'BODY_TAGS' => $body_tags,
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													'WEBSITE_TITLE' => ($title['value']),
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													'TEXT_ADMINISTRATION' => $TEXT['ADMINISTRATION'],
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													'CURRENT_USER' => $MESSAGE['START']['CURRENT_USER'],
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													'DISPLAY_NAME' => $this->get_display_name(),
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													'CHARSET' => $charset,
142
													'LANGUAGE' => strtolower(LANGUAGE),
143
													'VERSION' => VERSION,
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													'WB_URL' => WB_URL,
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													'ADMIN_URL' => ADMIN_URL,
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													'THEME_URL' => THEME_URL,
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													'TITLE_START' => $MENU['START'],
148
													'TITLE_VIEW' => $MENU['VIEW'],
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													'TITLE_HELP' => $MENU['HELP'],
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													'TITLE_LOGOUT' =>  $MENU['LOGOUT'],
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													'URL_VIEW' => $view_url,
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													'URL_HELP' => 'http://help.websitebaker.org/',
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													'BACKEND_MODULE_CSS' => $this->register_backend_modfiles('css'),	// adds backend.css
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													'BACKEND_MODULE_JS'  => $this->register_backend_modfiles('js')		// adds backend.js
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													)
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											);
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158
		// Create the menu
159
		$menu = array(
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					array(ADMIN_URL.'/pages/index.php', '', $MENU['PAGES'], 'pages', 1),
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					array(ADMIN_URL.'/media/index.php', '', $MENU['MEDIA'], 'media', 1),
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					array(ADMIN_URL.'/addons/index.php', '', $MENU['ADDONS'], 'addons', 1),
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					array(ADMIN_URL.'/preferences/index.php', '', $MENU['PREFERENCES'], 'preferences', 0),
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					array(ADMIN_URL.'/settings/index.php', '', $MENU['SETTINGS'], 'settings', 1),
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					array(ADMIN_URL.'/admintools/index.php', '', $MENU['ADMINTOOLS'], 'admintools', 1),
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					array(ADMIN_URL.'/access/index.php', '', $MENU['ACCESS'], 'access', 1)
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					);
168
		$header_template->set_block('header_block', 'linkBlock', 'link');
169
		foreach($menu AS $menu_item) {
170
			$link = $menu_item[0];
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			$target = ($menu_item[1] == '') ? '_self' : $menu_item[1];
172
			$title = $menu_item[2];
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			$permission_title = $menu_item[3];
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			$required = $menu_item[4];
175
			$replace_old = array(ADMIN_URL, WB_URL, '/', 'index.php');
176
			if($required == false OR $this->get_link_permission($permission_title)) {
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				$header_template->set_var('LINK', $link);
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				$header_template->set_var('TARGET', $target);
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				// If link is the current section apply a class name
180
				if($permission_title == strtolower($this->section_name)) {
181
					$header_template->set_var('CLASS', $menu_item[3] . ' current');
182
				} else {
183
					$header_template->set_var('CLASS', $menu_item[3]);
184
				}
185
				$header_template->set_var('TITLE', $title);
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				// Print link
187
				$header_template->parse('link', 'linkBlock', true);
188
			}
189
		}
190
		$header_template->parse('header', 'header_block', false);
191
		$header_template->pparse('output', 'page');
192
	}
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194
	// Print the admin footer
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	function print_footer() {
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		// include the required file for Javascript admin
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		if(file_exists(WB_PATH.'/modules/jsadmin/jsadmin_backend_include.php')){
198
		@include(WB_PATH.'/modules/jsadmin/jsadmin_backend_include.php');
199
		}
200
		$footer_template = new Template(THEME_PATH.'/templates');
201
		$footer_template->set_file('page', 'footer.htt');
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		$footer_template->set_block('page', 'footer_block', 'header');
203
		$footer_template->set_var(array(
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						'BACKEND_BODY_MODULE_JS' => $this->register_backend_modfiles_body('js'),
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						'WB_URL' => WB_URL,
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						'WB_PATH' => WB_PATH,
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						'ADMIN_URL' => ADMIN_URL,
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						'THEME_URL' => THEME_URL,
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			 ) );
210
		$footer_template->parse('header', 'footer_block', false);
211
		$footer_template->pparse('output', 'page');
212
	}
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214
	// Return a system permission
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	function get_permission($name, $type = 'system') {
216
		// Append to permission type
217
		$type .= '_permissions';
218
		// Check if we have a section to check for
219
		if($name == 'start') {
220
			return true;
221
		} else {
222
			// Set system permissions var
223
			$system_permissions = $this->get_session('SYSTEM_PERMISSIONS');
224
			// Set module permissions var
225
			$module_permissions = $this->get_session('MODULE_PERMISSIONS');
226
			// Set template permissions var
227
			$template_permissions = $this->get_session('TEMPLATE_PERMISSIONS');
228
			// Return true if system perm = 1
229
			if (isset($$type) && is_array($$type) && is_numeric(array_search($name, $$type))) {
230
				if($type == 'system_permissions') {
231
					return true;
232
				} else {
233
					return false;
234
				}
235
			} else {
236
				if($type == 'system_permissions') {
237
					return false;
238
				} else {
239
					return true;
240
				}
241
			}
242
		}
243
	}
244
		
245
	function get_user_details($user_id) {
246
		global $database;
247
		$query_user = "SELECT username,display_name FROM ".TABLE_PREFIX."users WHERE user_id = '$user_id'";
248
		$get_user = $database->query($query_user);
249
		if($get_user->numRows() != 0) {
250
			$user = $get_user->fetchRow();
251
		} else {
252
			$user['display_name'] = 'Unknown';
253
			$user['username'] = 'unknown';
254
		}
255
		return $user;
256
	}	
257
	
258
	function get_page_details($page_id) {
259
		global $database;
260
		$query = "SELECT page_id,page_title,modified_by,modified_when FROM ".TABLE_PREFIX."pages WHERE page_id = '$page_id'";
261
		$results = $database->query($query);
262
		if($database->is_error()) {
263
			$this->print_header();
264
			$this->print_error($database->get_error());
265
		}
266
		if($results->numRows() == 0) {
267
			$this->print_header();
268
			$this->print_error($MESSAGE['PAGES']['NOT_FOUND']);
269
		}
270
		$results_array = $results->fetchRow();
271
		return $results_array;
272
	}	
273
	
274
	/** Function get_page_permission takes either a numerical page_id,
275
	 * upon which it looks up the permissions in the database,
276
	 * or an array with keys admin_groups and admin_users  
277
	 */
278
	function get_page_permission($page,$action='admin') {
279
		if ($action!='viewing') $action='admin';
280
		$action_groups=$action.'_groups';
281
		$action_users=$action.'_users';
282
		if (is_array($page)) {
283
				$groups=$page[$action_groups];
284
				$users=$page[$action_users];
285
		} else {				
286
			global $database;
287
			$results = $database->query("SELECT $action_groups,$action_users FROM ".TABLE_PREFIX."pages WHERE page_id = '$page'");
288
			$result = $results->fetchRow();
289
			$groups = explode(',', str_replace('_', '', $result[$action_groups]));
290
			$users = explode(',', str_replace('_', '', $result[$action_users]));
291
		}
292

    
293
		$in_group = FALSE;
294
		foreach($this->get_groups_id() as $cur_gid){
295
		    if (in_array($cur_gid, $groups)) {
296
		        $in_group = TRUE;
297
		    }
298
		}
299
		if((!$in_group) AND !is_numeric(array_search($this->get_user_id(), $users))) {
300
			return false;
301
		}
302
		return true;
303
	}
304
		
305

    
306
	// Returns a system permission for a menu link
307
	function get_link_permission($title) {
308
		$title = str_replace('_blank', '', $title);
309
		$title = strtolower($title);
310
		// Set system permissions var
311
		$system_permissions = $this->get_session('SYSTEM_PERMISSIONS');
312
		// Set module permissions var
313
		$module_permissions = $this->get_session('MODULE_PERMISSIONS');
314
		if($title == 'start') {
315
			return true;
316
		} else {
317
			// Return true if system perm = 1
318
			if(is_numeric(array_search($title, $system_permissions))) {
319
				return true;
320
			} else {
321
				return false;
322
			}
323
		}
324
	}
325

    
326
	// Function to add optional module Javascript or CSS stylesheets into the <body> section of the backend
327
	function register_backend_modfiles_body($file_id="js")
328
		{
329
		// sanity check of parameter passed to the function
330
		$file_id = strtolower($file_id);
331
		if($file_id !== "javascript" && $file_id !== "js")
332
		{
333
			return;
334
		}
335
		global $database;
336
        $body_links = "";
337
		// define default baselink and filename for optional module javascript and stylesheet files
338
		if($file_id == "js") {
339
			$base_link = '<script type="text/javascript" src="'.WB_URL.'/modules/{MODULE_DIRECTORY}/backend_body.js"></script>';
340
			$base_file = "backend_body.js";
341
		}
342
		// check if backend_body.js files needs to be included to the <body></body> section of the backend
343
		if(isset($_GET['tool']))
344
			{
345
			// check if displayed page contains a installed admin tool
346
			$result = $database->query("SELECT * FROM " .TABLE_PREFIX ."addons
347
				WHERE type = 'module' AND function = 'tool' AND directory = '".addslashes($_GET['tool'])."'");
348
			if($result->numRows())
349
				{
350
				// check if admin tool directory contains a backend_body.js file to include
351
				$tool = $result->fetchRow();
352
				if(file_exists(WB_PATH ."/modules/" .$tool['directory'] ."/$base_file"))
353
				{
354
					// return link to the backend_body.js file
355
					return str_replace("{MODULE_DIRECTORY}", $tool['directory'], $base_link);
356
				}
357
			}
358
		} elseif(isset($_GET['page_id']) or isset($_POST['page_id']))
359
		{
360
			// check if displayed page in the backend contains a page module
361
			if (isset($_GET['page_id']))
362
			{
363
				$page_id = (int) addslashes($_GET['page_id']);
364
			} else {
365
				$page_id = (int) addslashes($_POST['page_id']);
366
			}
367
			// gather information for all models embedded on actual page
368
			$query_modules = $database->query("SELECT module FROM " .TABLE_PREFIX ."sections
369
				WHERE page_id=$page_id");
370
			while($row = $query_modules->fetchRow()) {
371
				// check if page module directory contains a backend_body.js file
372
				if(file_exists(WB_PATH ."/modules/" .$row['module'] ."/$base_file")) {
373
					// create link with backend_body.js source for the current module
374
					$tmp_link = str_replace("{MODULE_DIRECTORY}", $row['module'], $base_link);
375
					// ensure that backend_body.js is only added once per module type
376
					if(strpos($body_links, $tmp_link) === false) {
377
						$body_links .= $tmp_link ."\n";
378
					}
379
				}
380
			}
381
			// write out links with all external module javascript/CSS files, remove last line feed
382
			return rtrim($body_links);
383
		}
384
	}
385

    
386

    
387
	// Function to add optional module Javascript or CSS stylesheets into the <head> section of the backend
388
	function register_backend_modfiles($file_id="css") {
389
		// sanity check of parameter passed to the function
390
		$file_id = strtolower($file_id);
391
		if($file_id !== "css" && $file_id !== "javascript" && $file_id !== "js") {
392
			return;
393
		}
394

    
395
		global $database;
396
		// define default baselink and filename for optional module javascript and stylesheet files
397
		$head_links = "";
398
		if($file_id == "css") {
399
      	$base_link = '<link href="'.WB_URL.'/modules/{MODULE_DIRECTORY}/backend.css"';
400
			$base_link.= ' rel="stylesheet" type="text/css" media="screen" />';
401
			$base_file = "backend.css";
402
		} else {
403
			$base_link = '<script type="text/javascript" src="'.WB_URL.'/modules/{MODULE_DIRECTORY}/backend.js"></script>';
404
			$base_file = "backend.js";
405
		}
406

    
407
		// check if backend.js or backend.css files needs to be included to the <head></head> section of the backend
408
		if(isset($_GET['tool'])) {
409
			// check if displayed page contains a installed admin tool
410
			$result = $database->query("SELECT * FROM " .TABLE_PREFIX ."addons
411
				WHERE type = 'module' AND function = 'tool' AND directory = '".addslashes($_GET['tool'])."'");
412

    
413
			if($result->numRows()) {
414
				// check if admin tool directory contains a backend.js or backend.css file to include
415
				$tool = $result->fetchRow();
416
				if(file_exists(WB_PATH ."/modules/" .$tool['directory'] ."/$base_file")) {
417
        			// return link to the backend.js or backend.css file
418
					return str_replace("{MODULE_DIRECTORY}", $tool['directory'], $base_link);
419
				}
420
			}
421
		} elseif(isset($_GET['page_id']) or isset($_POST['page_id'])) {
422
			// check if displayed page in the backend contains a page module
423
			if (isset($_GET['page_id'])) {
424
				$page_id = (int) addslashes($_GET['page_id']);
425
			} else {
426
				$page_id = (int) addslashes($_POST['page_id']);
427
			}
428

    
429
    		// gather information for all models embedded on actual page
430
			$query_modules = $database->query("SELECT module FROM " .TABLE_PREFIX ."sections
431
				WHERE page_id=$page_id");
432

    
433
    		while($row = $query_modules->fetchRow()) {
434
				// check if page module directory contains a backend.js or backend.css file
435
      		if(file_exists(WB_PATH ."/modules/" .$row['module'] ."/$base_file")) {
436
					// create link with backend.js or backend.css source for the current module
437
					$tmp_link = str_replace("{MODULE_DIRECTORY}", $row['module'], $base_link);
438
        			// ensure that backend.js or backend.css is only added once per module type
439
        			if(strpos($head_links, $tmp_link) === false) {
440
						$head_links .= $tmp_link ."\n";
441
					}
442
				}
443
    		}
444
    		// write out links with all external module javascript/CSS files, remove last line feed
445
			return rtrim($head_links);
446
		}
447
	}
448
}
449

    
450
?>
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