include/header.inc.php

   1 <?php
   2 /************************************************************************/
   3 /* ATutor                                                                                                                               */
   4 /************************************************************************/
   5 /* Copyright (c) 2002-2008 by Greg Gay, Joel Kronenberg & Heidi Hazelton*/
   6 /* Adaptive Technology Resource Centre / University of Toronto                  */
   7 /* http://atutor.ca                                                                                                             */
   8 /*                                                                                                                                              */
   9 /* This program is free software. You can redistribute it and/or                */
  10 /* modify it under the terms of the GNU General Public License                  */
  11 /* as published by the Free Software Foundation.                                                */
  12 /************************************************************************/
  13 // $Id$
  14
  15 if (!defined('AT_INCLUDE_PATH')) { exit; }
  16
  17 //header('Cache-Control: private, pre-check=0, post-check=0, max-age=0');
  18
  19 //Harris Timer
  20   $mtime = microtime();
  21   $mtime = explode(' ', $mtime);
  22   $mtime = $mtime[1] + $mtime[0];
  23   $starttime = $mtime;
  24 //Harris Timer Ends
  25
  26 global $myLang;
  27 global $savant;
  28 global $onload;
  29 global $content_base_href, $course_base_href;
  30 global $_base_path;
  31 global $cid;
  32 global $contentManager;
  33 global $db;
  34 global $_pages;
  35 global $_stacks;
  36 global $framed, $popup;
  37 global $_custom_css;
  38 global $_custom_head;
  39 global $substr, $strlen, $course_id;
  40
  41 require(AT_INCLUDE_PATH . 'lib/menu_pages.php');
  42 require(AT_INCLUDE_PATH . 'lib/pref_functions.inc.php');
  43 //require(AT_INCLUDE_PATH."../jscripts/opensocial/all_opensocial.php");
  44
  45 $savant->assign('lang_code', $_SESSION['lang']);
  46 $savant->assign('lang_charset', $myLang->getCharacterSet());
  47 $savant->assign('base_path', $_base_path);
  48 $savant->assign('base_tmpl_path', $_SERVER['HTTP_HOST']);
  49 $savant->assign('theme', $_SESSION['prefs']['PREF_THEME']);
  50 $savant->assign('current_date', AT_date(_AT('announcement_date_format')));
  51 $savant->assign('just_social', $_config['just_social']);
  52
  53 $theme_img  = $_base_path . 'themes/'. $_SESSION['prefs']['PREF_THEME'] . '/images/';
  54 $savant->assign('img', $theme_img);
  55
  56 $_tmp_base_href = AT_BASE_HREF;
  57 if (isset($course_base_href) || isset($content_base_href)) {
  58         $_tmp_base_href .= $course_base_href;
  59         if ($content_base_href) {
  60                 $_tmp_base_href .= $content_base_href;
  61         }
  62 }
  63
  64 $savant->assign('content_base_href', $_tmp_base_href);
  65 $savant->assign('base_href', AT_BASE_HREF);
  66
  67 //Handle pretty url pages
  68 if ((($_config['course_dir_name'] + $_config['pretty_url']) > 0) && ($temp = strpos($_SERVER['PHP_SELF'], AT_PRETTY_URL_HANDLER)) > 0){
  69         $current_page = $pretty_current_page; //this is set in AT_PRETTY_URL_HANDLER
  70 }
  71
  72 if ($myLang->isRTL()) {
  73         $savant->assign('rtl_css', '<link rel="stylesheet" href="'.$_base_path.'themes/'.$_SESSION['prefs']['PREF_THEME'].'/rtl.css" type="text/css" />');
  74 } else {
  75         $savant->assign('rtl_css', '');
  76 }
  77
  78 $custom_head = '';
  79 if (isset($_custom_css)) {
  80         $custom_head = '<link rel="stylesheet" href="'.$_custom_css.'" type="text/css" />';
  81 }
  82
  83 if (isset($_custom_head)) {
  84         $custom_head .= '
  85 ' . $_custom_head;
  86 }
  87
  88 $custom_head .= '
  89 ' . get_user_style();
  90
  91 $savant->assign('custom_css', $custom_head);
  92
  93 if ($onload && ($_SESSION['prefs']['PREF_FORM_FOCUS'] || ($substr($onload, -8) != 'focus();'))) {
  94         $savant->assign('onload', $onload);
  95 }
  96
  97 if (isset($_SESSION['valid_user']) && $_SESSION['valid_user'] === true) {
  98         if (!empty($_SESSION['member_id'])) {
  99                 $savant->assign('user_name', get_display_name($_SESSION['member_id']));
 100         } else {
 101                 $savant->assign('user_name', $_SESSION['login']);
 102         }
 103 } else {
 104         $savant->assign('user_name', _AT('guest'));
 105 }
 106
 107 if (!isset($_pages[$current_page])) {
 108         global $msg;
 109         $msg->addError('PAGE_NOT_FOUND'); // probably the wrong error
 110         header('location: '.AT_BASE_HREF.'index.php');
 111         exit;
 112 }
 113
 114 $_top_level_pages        = get_main_navigation($current_page);
 115
 116 $_current_top_level_page = get_current_main_page($current_page);
 117
 118 if (empty($_top_level_pages)) {
 119         if (!$_SESSION['member_id'] && !$_SESSION['course_id']) {
 120                 $_top_level_pages = get_main_navigation($_pages[AT_NAV_PUBLIC][0]);
 121         } else if ($_SESSION['course_id'] < 0) {
 122                 $_top_level_pages = get_main_navigation($_pages[AT_NAV_ADMIN][0]);
 123         } else if (!$_SESSION['course_id']) {
 124                 $_top_level_pages = get_main_navigation($_pages[AT_NAV_START][0]);
 125         } else {
 126                 $_top_level_pages = get_main_navigation($_pages[AT_NAV_COURSE][0]);
 127         }
 128 }
 129 $_sub_level_pages        = get_sub_navigation($current_page);
 130
 131 $_current_sub_level_page = get_current_sub_navigation_page($current_page);
 132
 133 $_path = get_path($current_page);
 134
 135 unset($_path[0]);
 136 if (isset($_path[2]['url'], $_sub_level_pages[0]['url']) && $_path[2]['url'] == $_sub_level_pages[0]['url']) {
 137         $back_to_page = $_path[3];
 138 } else if (isset($_path[1]['url'], $_sub_level_pages[0]['url']) && $_path[1]['url'] == $_sub_level_pages[0]['url']) {
 139         $back_to_page = isset($_path[2]) ? $_path[2] : null;
 140 } else if (isset($_path[1])) {
 141         $back_to_page = $_path[1];
 142 }
 143
 144 if (isset($_SESSION['course_id']) && $_SESSION['course_id'] > 0) {
 145         $_path[] = array('url' => $_base_path . url_rewrite('index.php'), 'title' => $_SESSION['course_title']);
 146 } else if (isset($_SESSION['course_id']) && $_SESSION['course_id'] < 0) {
 147         $_path[] = array('url' => $_base_path . 'admin/index.php', 'title' => _AT('administration'));
 148 }
 149
 150 if (isset($_SESSION['member_id']) && $_SESSION['member_id']) {
 151         $_path[] = array('url' => $_base_path . 'bounce.php?course=0', 'title' => _AT('my_start_page'));
 152 } else if (!isset($_SESSION['course_id']) || !$_SESSION['course_id']) {
 153         $_path[] = array('url' => $_base_path . 'login.php', 'title' => SITE_NAME);
 154 }
 155
 156 $_path = array_reverse($_path);
 157
 158 if (isset($_pages[$current_page]['title'])) {
 159         $_page_title = $_pages[$current_page]['title'];
 160 } else {
 161         $_page_title = _AT($_pages[$current_page]['title_var']);
 162 }
 163
 164
 165
 166 /* calculate the section_title: */
 167 if (isset($_SESSION['course_id']) && $_SESSION['course_id'] > 0) {
 168         //Truncate course title if it's > 45.
 169         $session_course_title = htmlentities($_SESSION['course_title'], ENT_QUOTES, 'UTF-8');
 170         $section_title = validate_length($session_course_title, 45, VALIDATE_LENGTH_FOR_DISPLAY);
 171         // If there is an icon, display it on the header
 172         $sql = 'SELECT icon FROM '.TABLE_PREFIX.'courses WHERE course_id='.$_SESSION['course_id'];
 173         $result =  mysql_query($sql, $db);
 174         $row = mysql_fetch_assoc($result);
 175         if (!empty($row['icon'])){
 176                 //Check if this is a custom icon, if so, use get_course_icon.php to get it
 177                 //Otherwise, simply link it from the images/
 178                 $custom_icon_path = AT_CONTENT_DIR.$_SESSION['course_id']."/custom_icons/";
 179                 if (file_exists($custom_icon_path.$row['icon'])) {
 180                         if (defined('AT_FORCE_GET_FILE') && AT_FORCE_GET_FILE) {
 181                                 $course_icon = $_base_path.'get_course_icon.php/?id='.$_SESSION['course_id'];
 182                         } else {
 183                                 $course_icon = $_base_path.'content/' . $_SESSION['course_id'] . '/';
 184                         }
 185                 } else {
 186                         $course_icon = $_base_path.'images/courses/'.$row['icon'];
 187                 }
 188                 $savant->assign('icon', $course_icon);
 189         }
 190 } else if (!isset($_SESSION['valid_user']) || !$_SESSION['valid_user']) {
 191         $section_title = SITE_NAME;
 192         if (defined('HOME_URL') && HOME_URL) {
 193                 $_top_level_pages[] = array('url' => HOME_URL, 'title' => _AT('home'));
 194         }
 195 } else if ($_SESSION['course_id'] < 0) {
 196         $section_title = _AT('administration');
 197 } else if (!$_SESSION['course_id']) {
 198         $section_title = _AT('my_start_page');
 199 }
 200 $savant->assign('current_top_level_page', $_current_top_level_page);
 201 $savant->assign('sub_level_pages', $_sub_level_pages);
 202 $savant->assign('current_sub_level_page', $_current_sub_level_page);
 203
 204 $savant->assign('path', $_path);
 205 $savant->assign('back_to_page', isset($back_to_page) ? $back_to_page : null);
 206 $savant->assign('page_title', htmlspecialchars($_page_title, ENT_COMPAT, "UTF-8"));
 207 $savant->assign('top_level_pages', $_top_level_pages);
 208 $savant->assign('section_title', $section_title);
 209
 210 if (isset($_pages[$current_page]['guide'])) {
 211         $savant->assign('guide', AT_GUIDES_PATH . $_pages[$current_page]['guide']);
 212 }
 213
 214 $myLang->sendContentTypeHeader();
 215
 216 if (isset($_SESSION['course_id']) && $_SESSION['course_id'] > -1) {
 217
 218         /* the list of our courses: */
 219         /* used for the courses drop down */
 220         global $system_courses;
 221         if ($_SESSION['valid_user']) {
 222                 $sql    = "SELECT E.course_id FROM ".TABLE_PREFIX."course_enrollment E WHERE E.member_id=$_SESSION[member_id] AND E.approved<>'n'";
 223                 $result = @mysql_query($sql, $db);
 224
 225                 $nav_courses = array(); /* the list of courses we're enrolled in or own */
 226                 while ($row = @mysql_fetch_assoc($result)) {
 227                         //Truncate course title if it's > 45.
 228                         $system_courses[$row['course_id']]['title'] = htmlentities($system_courses[$row['course_id']]['title'], ENT_QUOTES, 'UTF-8');
 229                         $nav_courses[$row['course_id']] = validate_length($system_courses[$row['course_id']]['title'], 45, VALIDATE_LENGTH_FOR_DISPLAY);
 230                 }
 231
 232                 natcasesort($nav_courses);
 233                 reset($nav_courses);
 234                 $savant->assign('nav_courses',    $nav_courses);
 235         }
 236
 237         if (($_SESSION['course_id'] > 0) && isset($_SESSION['prefs']['PREF_JUMP_REDIRECT']) && $_SESSION['prefs']['PREF_JUMP_REDIRECT']) {
 238                 $savant->assign('rel_url', $_rel_url);
 239         } else {
 240                 $savant->assign('rel_url', '');
 241         }
 242
 243         /* course specific elements: */
 244         /* != 'public' special case for the about.php page, which is available from a course but hides the content menu */
 245         $sequence_links = array();
 246         if ($_SESSION['course_id'] > 0) {
 247                 $sequence_links = $contentManager->generateSequenceCrumbs($cid);
 248                 $savant->assign('sequence_links', $sequence_links);
 249         }
 250
 251         //side menu array
 252         if ($_SESSION['course_id'] > 0) {
 253                 $side_menu = array();
 254                 $side_menu = explode('|', $system_courses[$_SESSION['course_id']]['side_menu']);
 255                 $side_menu = array_intersect($side_menu, $_stacks);
 256                 $savant->assign('side_menu', $side_menu);
 257         }
 258 }
 259
 260 /* Register our Errorhandler on everypage */
 261 //require_once(AT_INCLUDE_PATH . 'classes/ErrorHandler/ErrorHandler.class.php');
 262 //$err = new ErrorHandler();
 263
 264
 265 //TODO*******************BOLOGNA*******************REMOVE ME*******************/
 266 // if filemanager is a inside a popup or a frame
 267 // i don't like this code. i don't know were these two variables are coming from
 268 // anyone can add ?framed=1 to a URL to alter the behaviour.
 269
 270 // global $course_id is set when a guest accessing a public course.
 271 // This is to solve the issue that the google indexing fails as the session vars are lost.
 272 if (isset($_SESSION['course_id'])) $course_id = $_SESSION['course_id'];
 273
 274 $savant->assign('course_id', $course_id);
 275
 276 if ((isset($_REQUEST['framed']) && $_REQUEST['framed']) || (isset($_REQUEST['popup']) && $_REQUEST['popup'])) {
 277     $savant->assign('framed', 1);
 278     $savant->assign('popup', 1);
 279
 280     if(isset($tool_flag) && ($tool_flag))
 281         $savant->display('include/tm_header.tmpl.php');         //header for toolmanager
 282     else
 283         $savant->display('include/fm_header.tmpl.php');
 284
 285 } else {
 286     //$savant->assign('opensocial', open_social_libs($_base_href));
 287     $savant->display('include/header.tmpl.php');
 288 }
 289
 290
 291 ?>