include/header.inc.php

   1 <?php
   2 /************************************************************************/
   3 /* ATutor                                                                                                                               */
   4 /************************************************************************/
   5 /* Copyright (c) 2002-2010                                              */
   6 /* Inclusive Design Institute                                           */
   7 /* http://atutor.ca                                                     */
   8 /* This program is free software. You can redistribute it and/or        */
   9 /* modify it under the terms of the GNU General Public License          */
  10 /* as published by the Free Software Foundation.                        */
  11 /************************************************************************/
  12 // $Id$
  13
  14 if (!defined('AT_INCLUDE_PATH')) { exit; }
  15
  16 //header('Cache-Control: private, pre-check=0, post-check=0, max-age=0');
  17
  18 //Harris Timer
  19   $mtime = microtime();
  20   $mtime = explode(' ', $mtime);
  21   $mtime = $mtime[1] + $mtime[0];
  22   $starttime = $mtime;
  23 //Harris Timer Ends
  24
  25 global $myLang;
  26 global $savant;
  27 global $onload;
  28 global $content_base_href, $course_base_href;
  29 global $_base_path;
  30 global $cid;
  31 global $contentManager;
  32 global $db;
  33 global $_pages;
  34 global $_stacks;
  35 global $framed, $popup;
  36 global $_custom_css;
  37 global $_custom_head;
  38 global $substr, $strlen, $_course_id;
  39 global $_tool_shortcuts;
  40
  41 require(AT_INCLUDE_PATH . 'lib/menu_pages.php');
  42 //require(AT_INCLUDE_PATH."../jscripts/opensocial/all_opensocial.php");
  43
  44 $savant->assign('lang_code', $_SESSION['lang']);
  45 $savant->assign('lang_charset', $myLang->getCharacterSet());
  46 $savant->assign('base_path', $_base_path);
  47 $savant->assign('base_tmpl_path', $_SERVER['HTTP_HOST']);
  48 $savant->assign('theme', $_SESSION['prefs']['PREF_THEME']);
  49 $savant->assign('current_date', AT_date(_AT('announcement_date_format')));
  50 $savant->assign('just_social', $_config['just_social']);
  51
  52 $theme_img  = $_base_path . 'themes/'. $_SESSION['prefs']['PREF_THEME'] . '/images/';
  53 $savant->assign('img', $theme_img);
  54
  55 $_tmp_base_href = AT_BASE_HREF;
  56 if (isset($course_base_href) || isset($content_base_href)) {
  57         $_tmp_base_href .= $course_base_href;
  58         if ($content_base_href) {
  59                 $_tmp_base_href .= $content_base_href;
  60         }
  61 }
  62
  63 $savant->assign('content_base_href', $_tmp_base_href);
  64 $savant->assign('base_href', AT_BASE_HREF);
  65
  66 //Handle pretty url pages
  67 if ((($_config['course_dir_name'] + $_config['pretty_url']) > 0) && ($temp = strpos($_SERVER['PHP_SELF'], AT_PRETTY_URL_HANDLER)) > 0){
  68         $current_page = $pretty_current_page; //this is set in AT_PRETTY_URL_HANDLER
  69 }
  70
  71 if ($myLang->isRTL()) {
  72         $savant->assign('rtl_css', '<link rel="stylesheet" href="'.$_base_path.'themes/'.$_SESSION['prefs']['PREF_THEME'].'/rtl.css" type="text/css" />');
  73 } else {
  74         $savant->assign('rtl_css', '');
  75 }
  76
  77 $custom_head = '';
  78 if (isset($_custom_css)) {
  79         $custom_head = '<link rel="stylesheet" href="'.$_custom_css.'" type="text/css" />';
  80 }
  81
  82 if (isset($_custom_head)) {
  83         $custom_head .= '
  84 ' . $_custom_head;
  85 }
  86
  87 $savant->assign('custom_css', $custom_head);
  88
  89 if ($onload && ($_SESSION['prefs']['PREF_FORM_FOCUS'] || ($substr($onload, -8) != 'focus();'))) {
  90         $savant->assign('onload', $onload);
  91 }
  92
  93 if (isset($_SESSION['valid_user']) && $_SESSION['valid_user'] === true) {
  94         if (!empty($_SESSION['member_id'])) {
  95                 $savant->assign('user_name', get_display_name($_SESSION['member_id']));
  96         } else {
  97                 $savant->assign('user_name', $_SESSION['login']);
  98         }
  99 } else {
 100         $savant->assign('user_name', _AT('guest'));
 101 }
 102
 103 if (!isset($_pages[$current_page])) {
 104         global $msg;
 105         $msg->addError('PAGE_NOT_FOUND'); // probably the wrong error
 106         header('location: '.AT_BASE_HREF.'index.php');
 107         exit;
 108 }
 109
 110 $_top_level_pages        = get_main_navigation($current_page);
 111
 112 $_current_top_level_page = get_current_main_page($current_page);
 113
 114 if (empty($_top_level_pages)) {
 115         if (!$_SESSION['member_id'] && !$_SESSION['course_id']) {
 116                 $_top_level_pages = get_main_navigation($_pages[AT_NAV_PUBLIC][0]);
 117         } else if ($_SESSION['course_id'] < 0) {
 118                 $_top_level_pages = get_main_navigation($_pages[AT_NAV_ADMIN][0]);
 119         } else if (!$_SESSION['course_id']) {
 120                 $_top_level_pages = get_main_navigation($_pages[AT_NAV_START][0]);
 121         } else {
 122                 $_top_level_pages = get_main_navigation($_pages[AT_NAV_COURSE][0]);
 123         }
 124 }
 125 $_sub_level_pages        = get_sub_navigation($current_page);
 126
 127 $_current_sub_level_page = get_current_sub_navigation_page($current_page);
 128
 129 $_path = get_path($current_page);
 130
 131 unset($_path[0]);
 132 if (isset($_path[2]['url'], $_sub_level_pages[0]['url']) && $_path[2]['url'] == $_sub_level_pages[0]['url']) {
 133         $back_to_page = $_path[3];
 134 } else if (isset($_path[1]['url'], $_sub_level_pages[0]['url']) && $_path[1]['url'] == $_sub_level_pages[0]['url']) {
 135         $back_to_page = isset($_path[2]) ? $_path[2] : null;
 136 } else if (isset($_path[1])) {
 137         $back_to_page = $_path[1];
 138 }
 139
 140 if (isset($_SESSION['course_id']) && $_SESSION['course_id'] > 0) {
 141         $_path[] = array('url' => $_base_path . url_rewrite('index.php'), 'title' => $_SESSION['course_title']);
 142 } else if (isset($_SESSION['course_id']) && $_SESSION['course_id'] < 0) {
 143         $_path[] = array('url' => $_base_path . 'admin/index.php', 'title' => _AT('administration'));
 144 }
 145
 146 if (isset($_SESSION['member_id']) && $_SESSION['member_id']) {
 147         $_path[] = array('url' => $_base_path . 'bounce.php?course=0', 'title' => _AT('my_start_page'));
 148 } else if (!isset($_SESSION['course_id']) || !$_SESSION['course_id']) {
 149         $_path[] = array('url' => $_base_path . 'login.php', 'title' => SITE_NAME);
 150 }
 151
 152 $_path = array_reverse($_path);
 153
 154 if (isset($_pages[$current_page]['title'])) {
 155         $_page_title = $_pages[$current_page]['title'];
 156 } else {
 157         $_page_title = _AT($_pages[$current_page]['title_var']);
 158 }
 159
 160
 161
 162 /* calculate the section_title: */
 163 if (isset($_SESSION['course_id']) && $_SESSION['course_id'] > 0) {
 164         //Truncate course title if it's > 45.
 165         $session_course_title = htmlentities($_SESSION['course_title'], ENT_QUOTES, 'UTF-8');
 166         $section_title = validate_length($session_course_title, 100, VALIDATE_LENGTH_FOR_DISPLAY);
 167         // If there is an icon, display it on the header
 168         $sql = 'SELECT icon FROM '.TABLE_PREFIX.'courses WHERE course_id='.$_SESSION['course_id'];
 169         $result =  mysql_query($sql, $db);
 170         $row = mysql_fetch_assoc($result);
 171         if (!empty($row['icon'])){
 172                 //Check if this is a custom icon, if so, use get_course_icon.php to get it
 173                 //Otherwise, simply link it from the images/
 174                 $custom_icon_path = AT_CONTENT_DIR.$_SESSION['course_id']."/custom_icons/";
 175                 if (file_exists($custom_icon_path.$row['icon'])) {
 176                         if (defined('AT_FORCE_GET_FILE') && AT_FORCE_GET_FILE) {
 177                                 $course_icon = $_base_path.'get_course_icon.php/?id='.$_SESSION['course_id'];
 178                         } else {
 179                                 $course_icon = $_base_path.'content/' . $_SESSION['course_id'] . '/';
 180                         }
 181                 } else {
 182                         $course_icon = $_base_path.'images/courses/'.$row['icon'];
 183                 }
 184                 $savant->assign('icon', $course_icon);
 185         }
 186 } else if (!isset($_SESSION['valid_user']) || !$_SESSION['valid_user']) {
 187         $section_title = SITE_NAME;
 188         if (defined('HOME_URL') && HOME_URL) {
 189                 $_top_level_pages[] = array('url' => HOME_URL, 'title' => _AT('home'));
 190         }
 191 } else if ($_SESSION['course_id'] < 0) {
 192         $section_title = _AT('administration');
 193 } else if (!$_SESSION['course_id']) {
 194         $section_title = _AT('my_start_page');
 195 }
 196 $savant->assign('current_top_level_page', $_current_top_level_page);
 197 $savant->assign('sub_level_pages', $_sub_level_pages);
 198 $savant->assign('current_sub_level_page', $_current_sub_level_page);
 199
 200 $savant->assign('path', $_path);
 201 $savant->assign('back_to_page', isset($back_to_page) ? $back_to_page : null);
 202 $savant->assign('page_title', htmlspecialchars($_page_title, ENT_COMPAT, "UTF-8"));
 203 $savant->assign('top_level_pages', $_top_level_pages);
 204 $savant->assign('section_title', $section_title);
 205
 206 if (isset($_pages[$current_page]['guide'])) {
 207         $savant->assign('guide', AT_GUIDES_PATH . $_pages[$current_page]['guide']);
 208 }
 209
 210 $myLang->sendContentTypeHeader();
 211
 212 if (isset($_SESSION['course_id']) && $_SESSION['course_id'] > -1) {
 213
 214         /* the list of our courses: */
 215         /* used for the courses drop down */
 216         global $system_courses;
 217         if ($_SESSION['valid_user']) {
 218                 $sql    = "SELECT E.course_id FROM ".TABLE_PREFIX."course_enrollment E WHERE E.member_id=$_SESSION[member_id] AND E.approved<>'n'";
 219                 $result = @mysql_query($sql, $db);
 220
 221                 $nav_courses = array(); /* the list of courses we're enrolled in or own */
 222                 while ($row = @mysql_fetch_assoc($result)) {
 223                         //Truncate course title if it's > 45.
 224                         $system_courses[$row['course_id']]['title'] = htmlentities($system_courses[$row['course_id']]['title'], ENT_QUOTES, 'UTF-8');
 225                         $nav_courses[$row['course_id']] = validate_length($system_courses[$row['course_id']]['title'], 45, VALIDATE_LENGTH_FOR_DISPLAY);
 226                 }
 227
 228                 natcasesort($nav_courses);
 229                 reset($nav_courses);
 230                 $savant->assign('nav_courses',    $nav_courses);
 231         }
 232
 233         if (($_SESSION['course_id'] > 0) && isset($_SESSION['prefs']['PREF_JUMP_REDIRECT']) && $_SESSION['prefs']['PREF_JUMP_REDIRECT']) {
 234                 $savant->assign('rel_url', $_rel_url);
 235         } else {
 236                 $savant->assign('rel_url', '');
 237         }
 238
 239         /* course specific elements: */
 240         /* != 'public' special case for the about.php page, which is available from a course but hides the content menu */
 241         $sequence_links = array();
 242         if ($_SESSION['course_id'] > 0) {
 243                 $sequence_links = $contentManager->generateSequenceCrumbs($cid);
 244                 $savant->assign('sequence_links', $sequence_links);
 245         }
 246
 247         //side menu array
 248         if ($_SESSION['course_id'] > 0) {
 249                 $side_menu = array();
 250                 $side_menu = explode('|', $system_courses[$_SESSION['course_id']]['side_menu']);
 251                 $side_menu = array_intersect($side_menu, $_stacks);
 252                 $savant->assign('side_menu', $side_menu);
 253         }
 254 }
 255
 256 // array of content tools for shortcuts tool bar.
 257 if (isset($_tool_shortcuts)) $savant->assign('shortcuts', $_tool_shortcuts);
 258
 259 /* Register our Errorhandler on everypage */
 260 //require_once(AT_INCLUDE_PATH . 'classes/ErrorHandler/ErrorHandler.class.php');
 261 //$err = new ErrorHandler();
 262
 263
 264 //TODO*******************BOLOGNA*******************REMOVE ME*******************/
 265 // if filemanager is a inside a popup or a frame
 266 // i don't like this code. i don't know were these two variables are coming from
 267 // anyone can add ?framed=1 to a URL to alter the behaviour.
 268
 269 // global $_course_id is set when a guest accessing a public course.
 270 // This is to solve the issue that the google indexing fails as the session vars are lost.
 271 if (isset($_SESSION['course_id']))
 272         $_course_id = $_SESSION['course_id'];
 273 else if (isset($_GET['p_course'])) // p_course is set when pretty url is turned on and public course is accessed
 274         $_course_id = $_GET['p_course'];
 275
 276 $savant->assign('course_id', $_course_id);
 277 $savant->assign('is_mobile_device', is_mobile_device());
 278 $savant->assign('mobile_device_type', get_mobile_device_type());
 279
 280 if ((isset($_REQUEST['framed']) && $_REQUEST['framed']) || (isset($_REQUEST['popup']) && $_REQUEST['popup'])) {
 281     $savant->assign('framed', 1);
 282     $savant->assign('popup', 1);
 283
 284     if(isset($tool_flag) && ($tool_flag))
 285         $savant->display('include/tm_header.tmpl.php');         //header for toolmanager
 286     else
 287         $savant->display('include/fm_header.tmpl.php');
 288
 289 } else {
 290     //$savant->assign('opensocial', open_social_libs($_base_href));
 291     $savant->display('include/header.tmpl.php');
 292 }
 293
 294
 295 ?>