forked from atutor/ATutor
/
bounce.php
566 lines (467 loc) · 19.5 KB
/
bounce.php
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<?php
/****************************************************************/
/* ATutor */
/****************************************************************/
/* Copyright (c) 2002-2010 */
/* Inclusive Design Institute */
/* http://atutor.ca */
/* */
/* This program 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. */
/****************************************************************/
// $Id$
function apply_category_theme($category_id) {
if (defined('AT_ENABLE_CATEGORY_THEMES') && AT_ENABLE_CATEGORY_THEMES) {
global $db;
if ($category_id) {
// apply the theme for this category:
$sql = "SELECT theme FROM %scourse_cats WHERE cat_id=%d";
$row = queryDB($sql, array(TABLE_PREFIX, $category_id), TRUE);
if($row['theme'] !=''){
$_SESSION['prefs']['PREF_THEME'] = $row['theme'];
} else {
$_SESSION['prefs']['PREF_THEME'] = get_default_theme();
}
} else {
$_SESSION['prefs']['PREF_THEME'] = get_default_theme();
}
}
}
function count_login( ) {
global $db, $moduleFactory;
$module =& $moduleFactory->getModule(AT_MODULE_DIR_STANDARD.'/statistics');
if (!$module->isEnabled()) {
return;
}
$sql = "SELECT * from %scourse_stats WHERE course_id = %d AND login_date = CURDATE()";
$row = queryDB($sql, array(TABLE_PREFIX, $_SESSION['course_id']), TRUE);
if(!$row['course_id']){
if ($_SESSION['is_guest']) {
$sql = "INSERT INTO %scourse_stats VALUES (%d, NOW(), 1, 0)";
} else {
$sql = "INSERT INTO %scourse_stats VALUES (%d, NOW(), 0, 1)";
}
$result = queryDB($sql, array(TABLE_PREFIX, $_SESSION['course_id']));
}else{
/* that entry already exists, then update it. */
if ($_SESSION['is_guest']) {
$sql = "UPDATE %scourse_stats SET guests=guests+1 WHERE course_id=%d AND login_date=CURDATE()";
unset($msg);
} else {
$sql = "UPDATE %scourse_stats SET members=members+1 WHERE course_id=%d AND login_date=CURDATE()";
}
$result = queryDB($sql, array(TABLE_PREFIX, $_SESSION['course_id']));
}
}
function get_groups($course_id) {
global $db;
$groups = array();
if (authenticate(AT_PRIV_GROUPS, true)) {
$sql = "SELECT G.group_id FROM %sgroups G INNER JOIN %sgroups_types T USING (type_id) WHERE T.course_id=%d";
$rows = queryDB($sql, array(TABLE_PREFIX, TABLE_PREFIX, $course_id));
} else {
$sql = "SELECT G.group_id FROM %sgroups G INNER JOIN (%sgroups_types T, %sgroups_members M) ON (G.type_id=T.type_id AND G.group_id=M.group_id) WHERE T.course_id=%d AND M.member_id=%d";
$rows = queryDB($sql, array(TABLE_PREFIX, TABLE_PREFIX,TABLE_PREFIX, $course_id, $_SESSION['member_id']));
}
foreach($rows as $row){
$groups[$row['group_id']] = $row['group_id'];
}
return $groups;
}
$_user_location = 'public';
define('AT_INCLUDE_PATH', 'include/');
require(AT_INCLUDE_PATH.'vitals.inc.php');
if($_config['just_social'] == 1){
header('Location: mods/_standard/social/index_mystart.php');
exit;
}
$set_to_public = false;
if ($_SERVER['PHP_SELF'] == $_base_path."acl.php") {
//search through the auth table and find password that matches get password
$key = $addslashes(key($_GET));
$sql = "SELECT * FROM %scourse_access WHERE password='%s' AND (expiry_date > NOW() OR expiry_date+0 = 0) AND enabled=1";
$row = queryDB($sql, array(TABLE_PREFIX, $key), TRUE);
if ($row['password'] != '') {
$set_to_public = true;
$_REQUEST['course'] = $row['course_id'];
$_SESSION['member_id'] = 0;
$_SESSION['valid_user'] = false;
$_SESSION['login'] = 'guest';
}
}
if (isset($_GET['admin']) && isset($_SESSION['is_super_admin'])) {
$sql = "SELECT login, `privileges`, language FROM %sadmins WHERE login='%s' AND `privileges`>0";
$row = queryDB($sql, array(TABLE_PREFIX, $_SESSION['is_super_admin']), TRUE);
// update admin login when returning from viewing courses
if($row['login']){
$sql = "UPDATE %sadmins SET last_login=NOW() WHERE login='%s'";
$num_rows = queryDB($sql, array(TABLE_PREFIX, $_SESSION['is_super_admin']));
$_SESSION['login'] = $row['login'];
$_SESSION['valid_user'] = true;
$_SESSION['course_id'] = -1;
$_SESSION['privileges'] = intval($row['privileges']);
$_SESSION['lang'] = $row['language'];
unset($_SESSION['prefs']);
assign_session_prefs(unserialize(stripslashes($_config['pref_defaults'])), 1);
unset($_SESSION['member_id']);
unset($_SESSION['is_super_admin']);
unset($_SESSION['is_admin']);
unset($_SESSION['message']['help']);
write_to_log(AT_ADMIN_LOG_UPDATE, 'admins', $num_rows, $sql);
$msg->addFeedback('LOGIN_SUCCESS');
header('Location: admin/index.php');
exit;
}
}
if (!empty($_REQUEST['pu'])) {
//request ib stands for 'is bounced', this is to avoid the infinite 302 redirect
//A better way to deal with this rather than using querystring? (Session won't work)
//Session doesn't work,leads to bounce out error as well.
if (!empty($_REQUEST['ib'])) {
return;
}
//for pretty url iff mod_rewrite is not on
if ($_config['apache_mod_rewrite'] > 0){
//URL are in pretty format, but not in .htaccess RewriteRule format
//http://www.atutor.ca/atutor/mantis/view.php?id=3426
$page = url_rewrite($_REQUEST['pu'], AT_PRETTY_URL_NOT_HEADER, true) . '/ib/1';
} else {
if ($_config['pretty_url'])
{
$orig_url = AT_PRETTY_URL_HANDLER.$_REQUEST['pu'];
$page = (substr($_REQUEST['pu'], -1) == '/') ? ($orig_url. 'ib/1/') : ($orig_url .'/ib/1/');
}
else
$page = AT_PRETTY_URL_HANDLER.$_REQUEST['pu'] . SEP .'ib=1';
}
} elseif (!empty($_REQUEST['p'])) {
//For search
//p is a relative path, check that. #4773
if (strpos($_REQUEST['p'], 'http') !== false) {
//if not relative, reset it.
$_REQUEST['p'] = "";
}
$page = urldecode($_REQUEST['p']);
} elseif (($_config['pretty_url'] > 0) && preg_match('/bounce.php\?course=([\d]+)$/', $_SERVER['REQUEST_URI'])==1) {
//for browse, and my start page url rewrite.
$page = url_rewrite($_SERVER['REQUEST_URI'], AT_PRETTY_URL_NOT_HEADER, true).'/index.php'; //force overwrite
} else {
//handles jump menu
if (isset($_POST['jump']) && abs($_POST['course']) > 0){
$_SESSION['course_id'] = abs($_POST['course']);
}
$page = url_rewrite('index.php');
}
if (substr($page, 0, 1) == '/') {
$page = substr($page, 1);
}
$_SESSION['enroll'] = AT_ENROLL_NO;
$_SESSION['s_cid'] = 0;
$_SESSION['privileges'] = 0;
$_SESSION['is_admin'] = false;
if ($_SESSION['course_id'] == -1) {
unset($_SESSION['valid_user']);
unset($_SESSION['is_guest']);
unset($_SESSION['login']);
unset($_SESSION['is_admin']);
unset($_SESSION['course_id']);
}
if (isset($_REQUEST['course'])) { // is set guests access protected course
$course = abs($_REQUEST['course']);
} else if (isset($_REQUEST['p_course'])) { // is set when pretty url is turned on, access public course
$course = abs($_REQUEST['p_course']);
} else {
$course = 0;
}
if (($course === 0) && $_SESSION['valid_user']) {
$_SESSION['course_id'] = 0;
$_SESSION['last_updated'] = time()/60 - ONLINE_UPDATE - 1;
if (defined('AT_ENABLE_CATEGORY_THEMES') && AT_ENABLE_CATEGORY_THEMES) {
$_SESSION['prefs']['PREF_THEME'] = get_default_theme();
}
// If instructor with no course, direct to create course screen unless it is disabled
$sql = 'SELECT status FROM %smembers WHERE member_id=%d';
$row = queryDB($sql, array(TABLE_PREFIX, $_SESSION['member_id']), TRUE);
if ($row['status'] == 3) {
$sql = 'SELECT COUNT(*) AS count FROM %scourses WHERE member_id=%d';
$row = queryDB($sql, array(TABLE_PREFIX, $_SESSION['member_id']), TRUE);
$this_count = $row['count'];
$sql = "SELECT * FROM %smodules WHERE dir_name ='_core/services' && status ='2'";
$row = queryDB($sql, array(TABLE_PREFIX), TRUE);
if($row['dir_name']){
//This is a Service site
$service_site = 1;
}
if ($this_count == 0) {
if(isset($service_site) && $_config['disable_create'] != 1){
$msg->addFeedback('CREATE_NEW_COURSE');
header('Location: mods/_core/services/users/create_course.php');
exit;
}else if($_config['disable_create'] != 1){
$msg->addFeedback('CREATE_NEW_COURSE');
header('Location: mods/_core/courses/users/create_course.php');
exit;
}
}
}
/* http://atutor.ca/atutor/mantis/view.php?id=4587
* for users with no enrolled courses, default to the Browse Courses screen instead of My Courses.
*/
$sql = 'SELECT COUNT(*) AS count FROM %scourse_enrollment WHERE member_id=%d';
$row = queryDB($sql, array(TABLE_PREFIX, $_SESSION['member_id']), TRUE);
if ($row['count'] == 0) {
header('Location: users/browse.php');
exit;
}
header('Location: users/index.php');
exit;
} else if (($course === 0) && !$_SESSION['valid_user']) { // guests
header('Location: '.AT_BASE_HREF.'login.php');
exit;
} else if ($course == -1) {
$_SESSION['course_id'] = 0;
$_SESSION['last_updated'] = time()/60 - ONLINE_UPDATE - 1;
if (defined('AT_ENABLE_CATEGORY_THEMES') && AT_ENABLE_CATEGORY_THEMES) {
$_SESSION['prefs']['PREF_THEME'] = get_default_theme();
}
header('Location: users/index.php');
exit;
}
/*
Check the release and end dates on a course, redirect to login or MyStart if not released, or expired.
*/
$sql = "SELECT member_id, content_packaging, cat_id, access, title, UNIX_TIMESTAMP(release_date) AS u_release_date, UNIX_TIMESTAMP(end_date) AS u_end_date FROM %scourses WHERE course_id=%d";
$row = queryDB($sql,array(TABLE_PREFIX, $course), TRUE);
if (!$row['member_id']) {
$msg->addError('ITEM_NOT_FOUND');
if ($_SESSION['member_id']) {
header('Location: '.AT_BASE_HREF.'users/index.php');
} else {
header('Location: '.AT_BASE_HREF.'login.php');
}
exit;
}
if (!$_SESSION['member_id']) {
assign_session_prefs(unserialize(stripslashes($_config['pref_defaults'])), 1);
}
$owner_id = $row['member_id'];
$_SESSION['packaging'] = $row['content_packaging'];
$_SESSION['groups'] = array();
unset($_SESSION['fs_owner_type']);
unset($_SESSION['fs_owner_id']);
unset($_SESSION['fs_folder_id']);
//check for acl var
if ($set_to_public) {
$row['access'] = "public";
}
switch ($row['access']){
case 'public':
if ($_GET['f']) {
$dest = './'.$page.'?f='.$addslashes($_GET['f']);
} /* else */
$dest = './'.$page;
apply_category_theme($row['cat_id']);
if (!$_SESSION['valid_user'] && ($row['u_release_date'] < time()) && (!$row['u_end_date'] || $row['u_end_date'] > time())) {
$_SESSION['course_id'] = $course;
/* guest login */
$_SESSION['login'] = 'guest';
$_SESSION['valid_user'] = false;
$_SESSION['member_id'] = 0;
$_SESSION['is_admin'] = false;
$_SESSION['is_guest'] = true;
$_SESSION['course_title'] = $row['title'];
/* add guest login to counter: */
count_login();
if ($_config['pretty_url'])
{
if (!strpos($dest, '/p_course/')) $dest .= '/p_course/'.$course;
header('Location: '.$dest);
exit;
}
} else if (!$_SESSION['valid_user']) {
if ($row['u_release_date'] > time()) {
$msg->addError(array('COURSE_NOT_RELEASED', AT_Date(_AT('announcement_date_format'), $row['u_release_date'], AT_DATE_UNIX_TIMESTAMP)));
} else {
$msg->addError(array('COURSE_ENDED', AT_Date(_AT('announcement_date_format'), $row['u_end_date'], AT_DATE_UNIX_TIMESTAMP)));
}
header('Location: '.AT_BASE_HREF.'browse.php');
exit;
} else {
$_SESSION['course_id'] = $course;
/* check if we're an admin here */
if ($owner_id == $_SESSION['member_id']) {
$_SESSION['is_admin'] = true;
$_SESSION['enroll'] = AT_ENROLL_YES;
} else {
$_SESSION['is_admin'] = false;
}
}
/* title wont be needed. comes from the cache. */
$_SESSION['course_title'] = $row['title'];
$sql = "SELECT * FROM %scourse_enrollment WHERE member_id=%d AND course_id=%d";
$row2 = queryDB($sql, array(TABLE_PREFIX, $_SESSION['member_id'], $course), TRUE);
if ($row2['member_id']) {
/* we have requested or are enrolled in this course */
$_SESSION['enroll'] = AT_ENROLL_YES;
$_SESSION['s_cid'] = $row2['last_cid'];
$_SESSION['privileges'] = $row2['privileges'];
}
if (($row['u_release_date'] > time()) && !($_SESSION['is_admin'] || $_SESSION['privileges'])) {
$msg->addError(array('COURSE_NOT_RELEASED', AT_Date(_AT('announcement_date_format'), $row['u_release_date'], AT_DATE_UNIX_TIMESTAMP)));
header('Location: '.AT_BASE_HREF.'bounce.php?course=0');
exit;
} else if ($row['u_release_date'] > time()) {
$msg->addInfo(array('COURSE_RELEASE', AT_Date(_AT('announcement_date_format'), $row['u_release_date'], AT_DATE_UNIX_TIMESTAMP)));
} else if ($row['u_end_date'] && ($row['u_end_date'] < time()) && !($_SESSION['is_admin'] || $_SESSION['privileges'])) {
$msg->addError(array('COURSE_ENDED', AT_Date(_AT('announcement_date_format'), $row['u_end_date'], AT_DATE_UNIX_TIMESTAMP)));
header('Location: '.AT_BASE_HREF.'bounce.php?course=0');
exit;
} else if ($row['u_end_date'] && $row['u_end_date'] < time()) {
$msg->addInfo(array('COURSE_ENDED', AT_Date(_AT('announcement_date_format'), $row['u_end_date'], AT_DATE_UNIX_TIMESTAMP)));
}
/* add member login to counter: */
if (!$_SESSION['is_admin'] && $_SESSION['member_id'] > 0) {
count_login();
}
/* update users_online */
add_user_online();
$_SESSION['groups'] = get_groups($course);
header('Location: '.$dest);
exit;
break;
case 'protected':
if (!$_SESSION['valid_user']) {
header('Location: ./login.php?course='.intval($course));
exit;
} /* else */
/* we're already logged in */
$_SESSION['course_id'] = $course;
apply_category_theme($row['cat_id']);
/* check if we're an admin here */
if ($owner_id == $_SESSION['member_id']) {
$_SESSION['is_admin'] = true;
$_SESSION['enroll'] = AT_ENROLL_YES;
} else {
$_SESSION['is_admin'] = false;
/* add member login to counter: */
count_login();
}
$sql = "SELECT * FROM %scourse_enrollment WHERE member_id=%d AND course_id=%d";
$row2 = queryDB($sql, array(TABLE_PREFIX, $_SESSION['member_id'], $course), TRUE);
if ($row2['member_id']) {
/* we have requested or are enrolled in this course */
$_SESSION['enroll'] = AT_ENROLL_YES;
$_SESSION['s_cid'] = $row2['last_cid'];
$_SESSION['privileges'] = $row2['privileges'];
}
if (($row['u_release_date'] > time()) && !($_SESSION['is_admin'] || $_SESSION['privileges'])) {
$msg->addError(array('COURSE_NOT_RELEASED', AT_Date(_AT('announcement_date_format'), $row['u_release_date'], AT_DATE_UNIX_TIMESTAMP)));
header('Location: '.AT_BASE_HREF.'bounce.php?course=0');
exit;
} else if ($row['u_release_date'] > time()) {
$msg->addInfo(array('COURSE_RELEASE', AT_Date(_AT('announcement_date_format'), $row['u_release_date'], AT_DATE_UNIX_TIMESTAMP)));
} else if ($row['u_end_date'] && ($row['u_end_date'] < time()) && !($_SESSION['is_admin'] || $_SESSION['privileges'])) {
$msg->addError(array('COURSE_ENDED', AT_Date(_AT('announcement_date_format'), $row['u_end_date'], AT_DATE_UNIX_TIMESTAMP)));
header('Location: '.AT_BASE_HREF.'bounce.php?course=0');
exit;
} else if ($row['u_end_date'] && $row['u_end_date'] < time()) {
$msg->addInfo(array('COURSE_ENDED', AT_Date(_AT('announcement_date_format'), $row['u_end_date'], AT_DATE_UNIX_TIMESTAMP)));
}
$_SESSION['course_title'] = $row['title'];
/* update users_online */
add_user_online();
$_SESSION['groups'] = get_groups($course);
if ($_GET['f']) {
header('Location: ./'.$page.'?f='.$addslashes($_GET['f']));
exit;
} /* else */
header('Location: ./'.$addslashes($page));
exit;
break;
case 'private':
if (!$_SESSION['valid_user']) {
/* user not logged in: */
header('Location: ./login.php?course='.intval($course));
exit;
} /* else */
if ($owner_id == $_SESSION['member_id']) {
/* we own this course. so we dont have to enroll or get the groups */
$_SESSION['is_admin'] = true;
$_SESSION['course_id'] = $course;
$_SESSION['course_title'] = $row['title'];
$_SESSION['enroll'] = AT_ENROLL_YES;
$sql = "SELECT last_cid FROM %scourse_enrollment WHERE member_id=%d AND course_id=%d";
$row2 = queryDB($sql, array(TABLE_PREFIX, $_SESSION['member_id'], $course), TRUE);
$_SESSION['s_cid'] = $row2['last_cid'];
/* update users_online */
add_user_online();
apply_category_theme($row['cat_id']);
$_SESSION['groups'] = get_groups($course);
if (!empty($_GET['f'])) {
header('Location: ./'.$page.'?f='.$addslashes($_GET['f']));
exit;
} /* else */
if ($row['u_release_date'] > time()) {
$msg->addInfo(array('COURSE_RELEASE', AT_Date(_AT('announcement_date_format'), $row['u_release_date'], AT_DATE_UNIX_TIMESTAMP)));
} else if ($row['u_end_date'] && $row['u_end_date'] < time()) {
$msg->addInfo(array('COURSE_ENDED', AT_Date(_AT('announcement_date_format'), $row['u_end_date'], AT_DATE_UNIX_TIMESTAMP)));
}
header('Location: ./'.$addslashes($page));
exit;
}
/* check if we're enrolled */
$sql = "SELECT * FROM %scourse_enrollment WHERE member_id=%d AND course_id=%d";
$row2 = queryDB($sql, array(TABLE_PREFIX, $_SESSION['member_id'], $course), TRUE);
if (!$row2['member_id']) {
/* we have not requested enrollment in this course */
$_SESSION['course_id'] = 0;
header('Location: users/private_enroll.php?course='.intval($course));
exit;
} /* else */
if (($row['u_release_date'] > time()) && !($_SESSION['is_admin'] || $_SESSION['privileges'])) {
$msg->addError(array('COURSE_NOT_RELEASED', AT_Date(_AT('announcement_date_format'), $row['u_release_date'], AT_DATE_UNIX_TIMESTAMP)));
header('Location: '.AT_BASE_HREF.'bounce.php?course=0');
exit;
} else if ($row['u_release_date'] > time()) {
$msg->addInfo(array('COURSE_RELEASE', AT_Date(_AT('announcement_date_format'), $row['u_release_date'], AT_DATE_UNIX_TIMESTAMP)));
} else if ($row['u_end_date'] && ($row['u_end_date'] < time()) && !($_SESSION['is_admin'] || $_SESSION['privileges'])) {
$msg->addError(array('COURSE_ENDED', AT_Date(_AT('announcement_date_format'), $row['u_end_date'], AT_DATE_UNIX_TIMESTAMP)));
header('Location: '.AT_BASE_HREF.'bounce.php?course=0');
exit;
} else if ($row['u_end_date'] && $row['u_end_date'] < time()) {
$msg->addInfo(array('COURSE_ENDED', AT_Date(_AT('announcement_date_format'), $row['u_end_date'], AT_DATE_UNIX_TIMESTAMP)));
}
/* we have requested or are enrolled in this course */
apply_category_theme($row['cat_id']);
$_SESSION['enroll'] = AT_ENROLL_YES;
$_SESSION['s_cid'] = $row2['last_cid'];
if ($row2['approved'] == 'n') {
/* we have not been approved to enroll in this course */
$_SESSION['course_id'] = 0;
header('Location: users/private_enroll.php?course='.$course);
exit;
} /* else */
/* enrollment has been approved or student is alumni */
if ($row2['approved'] == 'a') {
$_SESSION['enroll'] = AT_ENROLL_ALUMNUS;
}
/* we're already logged in */
$_SESSION['course_id'] = $course;
/* check if we're an admin here */
$_SESSION['privileges'] = $row2['privileges'];
$_SESSION['course_title'] = $row['title'];
/* update users_online */
add_user_online();
$_SESSION['groups'] = get_groups($course);
/* add member login to counter: */
count_login();
if($_GET['f']){
header('Location: '.$page.'?f='.$addslashes($_GET['f']));
exit;
} /* else */
header('Location: '.$addslashes($page));
exit;
break;
} // end switch
?>