$v) {
if (!in_array($k, $noUnset) && isset($GLOBALS[$k])) { unset($GLOBALS[$k]); }
}
}
/*
* structure of this document (in order):
*
* 0. load config.inc.php
* 1. initilize db connection
* 2. load constants
* 3. initilize session
* 4. load $_config from table 'config'
* 5. start language block
* 6. load common libraries
* 7. initialize theme and template management
* 8. initialize a user instance without user id.
* if $_SESSION['user_id'] is set, it's assigned to instance in include/header.inc.php
* 9. register pages based on current user's priviledge
* 10. initialize course information if $_SESSION['course_id'] is set
***/
/**** 0. start system configuration options block ****/
error_reporting(0);
include_once(TR_INCLUDE_PATH.'config.inc.php');
error_reporting(TR_ERROR_REPORTING);
if (!defined('TR_INSTALL') || !TR_INSTALL) {
header('Cache-Control: no-store, no-cache, must-revalidate');
header('Pragma: no-cache');
$relative_path = substr(TR_INCLUDE_PATH, 0, -strlen('include/'));
header('Location: ' . $relative_path . 'install/not_installed.php');
exit;
}
/*** end system config block ****/
/***** 1. database connection *****/
//if (!defined('TR_REDIRECT_LOADED')){
// require_once(TR_INCLUDE_PATH.'lib/mysql_connect.inc.php');
//}
/***** end database connection ****/
/*** 2. constants ***/
require_once(TR_INCLUDE_PATH.'constants.inc.php');
/*** 3. initilize session ***/
@set_time_limit(0);
@ini_set('session.gc_maxlifetime', '36000'); /* 10 hours */
@session_cache_limiter('private, must-revalidate');
session_name('TransformableID');
error_reporting(TR_ERROR_REPORTING);
ob_start();
session_set_cookie_params(0, $_base_path);
session_start();
$str = ob_get_contents();
ob_end_clean();
unregister_GLOBALS();
// $_user_id could be set in home/ims/ims_import.php
// @see home/ims/ims_import.php
if (isset($_user_id) && $_user_id > 0) $_SESSION['user_id'] = $_user_id;
/***** end session initilization block ****/
/***** 4. load $_config from table 'config' *****/
require(TR_INCLUDE_PATH.'phpCache/phpCache.inc.php'); // cache library
require(TR_INCLUDE_PATH.'classes/DAO/ThemesDAO.class.php');
require(TR_INCLUDE_PATH.'classes/DAO/ConfigDAO.class.php');
$configDAO = new ConfigDAO();
$rows = $configDAO->getAll();
if (is_array($rows))
{
foreach ($rows as $id => $row)
{
$_config[$row['name']] = $row['value'];
}
}
//set the timezone, php 5.3+ problem. http://atutor.ca/atutor/mantis/view.php?id=4409
date_default_timezone_set('UTC');
// define as constants. more constants are defined in include/constants.inc.php
define('EMAIL', $_config['contact_email']);
define('SITE_NAME', $_config['site_name']);
$MaxFileSize = $_config['max_file_size'];
$MaxCourseSize = $_config['max_course_size'];
$MaxFileSize = $_config['max_file_size'];
$IllegalExtentions = explode('|',$_config['illegal_extentions']);
/***** end loading $_config *****/
/***** 5. start language block *****/
// set current language
require(TR_INCLUDE_PATH . 'classes/Language/LanguageManager.class.php');
$languageManager = new LanguageManager();
$myLang = $languageManager->getMyLanguage();
if ($myLang === FALSE) {
echo 'There are no languages installed!';
exit;
}
$myLang->saveToSession();
/* set right-to-left language */
$rtl = '';
if ($myLang->isRTL()) {
$rtl = 'rtl_'; /* basically the prefix to a rtl variant directory/filename. eg. rtl_atee */
}
/***** end language block ****/
/***** 6. load common libraries *****/
require(TR_INCLUDE_PATH.'lib/output.inc.php'); /* output functions */
/***** end load common libraries ****/
/***** 7. initialize theme and template management *****/
require(TR_INCLUDE_PATH.'classes/Savant2/Savant2.php');
// set default template paths:
$savant = new Savant2();
if (isset($_SESSION['prefs']['PREF_THEME']) && file_exists(TR_INCLUDE_PATH . '../themes/' . $_SESSION['prefs']['PREF_THEME']) && $_SESSION['user_id']>0)
{
if (!is_dir(TR_INCLUDE_PATH . '../themes/' . $_SESSION['prefs']['PREF_THEME']))
{
$_SESSION['prefs']['PREF_THEME'] = 'default';
}
else
{
//check if enabled
$themesDAO = new ThemesDAO();
$row = $themesDAO->getByID($_SESSION['prefs']['PREF_THEME']);
if ($row['status'] == 0)
{
// get default
$_SESSION['prefs']['PREF_THEME'] = get_default_theme();
}
}
} else
{
$_SESSION['prefs']['PREF_THEME'] = get_default_theme();
}
$savant->addPath('template', TR_INCLUDE_PATH . '../themes/' . $_SESSION['prefs']['PREF_THEME'] . '/');
require(TR_INCLUDE_PATH . '../themes/' . $_SESSION['prefs']['PREF_THEME'] . '/theme.cfg.php');
require(TR_INCLUDE_PATH.'classes/Message/Message.class.php');
$msg = new Message($savant);
/***** end of initialize theme and template management *****/
/***** 8. initialize user instance *****/
// used as global var
if (isset($_SESSION['user_id']) && $_SESSION['user_id'] > 0)
{
// check if $_SESSION['user_id'] is valid
include_once(TR_INCLUDE_PATH.'classes/DAO/UsersDAO.class.php');
$usersDAO = new UsersDAO();
$user = $usersDAO->getUserByID($_SESSION['user_id']);
if (!$user) // invalid user
unset($_SESSION['user_id']);
else
{
include_once(TR_INCLUDE_PATH.'classes/User.class.php');
$_current_user = new User($_SESSION['user_id']);
}
}
/***** end of initialize user instance *****/
/* 9. initialize course information if $course_id or $cid is set
* This section generates global variables:
* $_content_id if set,
* $_course_id if set or $cid is set
* $_SESSION['s_cid']: record the last content_id on (user_id + course_id) basis
* $_sequence_links: resume/first/next/previous content links
*/
if (intval($_REQUEST['_cid']) > 0) $_content_id = intval($_REQUEST['_cid']);
else if (intval($_POST['_cid']) > 0) $_content_id = intval($_POST['_cid']);
if (intval($_REQUEST['_course_id']) > 0) $_course_id = intval($_REQUEST['_course_id']);
else if (intval($_POST['_course_id']) > 0) $_course_id = intval($_POST['_course_id']);
// find course_id thru content_id
if ($_content_id > 0)
{
include_once(TR_INCLUDE_PATH.'classes/DAO/ContentDAO.class.php');
$contentDAO = new ContentDAO();
$content_row = $contentDAO->get($_content_id);
$_course_id = $content_row['course_id'];
}
// Generate $_SESSION['s_cid']: record the last visited content_id
// for authors and the users who have the current course in "my courses" list,
// save the last visited content_id into user_courses and set the session var.
// @see ContentUtility::saveLastCid()
// for the users who don't have the current course in "my courses" list,
// set the session var as $_GET['cid']
if ($_course_id > 0)
{
if ($_SESSION['user_id'] > 0)
{
include_once(TR_INCLUDE_PATH.'classes/DAO/UserCoursesDAO.class.php');
$userCoursesDAO = new UserCoursesDAO();
$user_courses_row = $userCoursesDAO->get($_SESSION['user_id'], $_course_id);
if ($user_courses_row && $user_courses_row['last_cid'] > 0)
$_SESSION['s_cid'] = $user_courses_row['last_cid'];
else if ($_content_id > 0)
$_SESSION['s_cid'] = $_content_id;
else // first time accessing this course, no last cid yet
unset($_SESSION['s_cid']);
}
else // guest
{
$_SESSION['s_cid'] = $_content_id;
}
}
// Generate contentManager.
// Must be called after generating $_SESSION['s_cid'] as it's used in contentManager class
if ($_course_id > 0)
{
global $contentManager;
include_once(TR_INCLUDE_PATH. '../home/classes/ContentManager.class.php');
$contentManager = new ContentManager($_course_id);
$_sequence_links = $contentManager->generateSequenceCrumbs($_content_id);
}
/*** 10. register pages based on user's priviledge ***/
require_once(TR_INCLUDE_PATH.'page_constants.inc.php');
/*~~~~~~~~~~~~~~~~~flash detection~~~~~~~~~~~~~~~~*/
if(isset($_COOKIE["flash"])){
$_SESSION['flash'] = $_COOKIE["flash"];
//delete the cookie
AContent.setcookie("flash",'',time()-3600);
}
if (!isset($_SESSION["flash"])) {
$_custom_head .= '
';
}
/*~~~~~~~~~~~~~~end flash detection~~~~~~~~~~~~~~~*/
/**
* This function is used for printing variables for debugging.
* @access public
* @param mixed $var The variable to output
* @param string $title The name of the variable, or some mark-up identifier.
* @author Joel Kronenberg
*/
function debug($var, $title='') {
if (!defined('TR_DEVEL') || !TR_DEVEL) {
return;
}
echo '';
if ($title) {
echo ''.$title.'
';
}
ob_start();
print_r($var);
$str = ob_get_contents();
ob_end_clean();
$str = str_replace('<', '<', $str);
$str = str_replace('[', '[', $str);
$str = str_replace(']', ']', $str);
$str = str_replace('=>', '=>', $str);
$str = str_replace('Array', 'Array', $str);
echo $str;
echo '';
}
/**
* This function is used for printing variables into log file for debugging.
* @access public
* @param mixed $var The variable to output
* @param string $log The location of the log file. If not provided, use the default one.
* @author Cindy Qi Li
*/
function debug_to_log($var, $log='') {
if (!defined('TR_DEVEL') || !TR_DEVEL) {
return;
}
if ($log == '') $log = TR_CONTENT_DIR. 'debug.log';
$handle = fopen($log, 'a');
fwrite($handle, "\n\n");
fwrite($handle, date("F j, Y, g:i a"));
fwrite($handle, "\n");
fwrite($handle, var_export($var,1));
fclose($handle);
}
/****************************************************/
/* compute the $_my_uri variable */
$bits = explode(SEP, getenv('QUERY_STRING'));
$num_bits = count($bits);
$_my_uri = '';
for ($i=0; $i<$num_bits; $i++) {
// if ( (strpos($bits[$i], 'enable=') === 0)
// || (strpos($bits[$i], 'disable=') === 0)
// || (strpos($bits[$i], 'expand=') === 0)
// || (strpos($bits[$i], 'collapse=') === 0)
// || (strpos($bits[$i], 'lang=') === 0)
// ) {
if ( (strpos($bits[$i], 'lang=') === 0)
) {
/* we don't want this variable added to $_my_uri */
continue;
}
if (($_my_uri == '') && ($bits[$i] != '')) {
$_my_uri .= '?';
} else if ($bits[$i] != ''){
$_my_uri .= SEP;
}
$_my_uri .= $bits[$i];
}
if ($_my_uri == '') {
$_my_uri .= '?';
} else {
$_my_uri .= SEP;
}
$_my_uri = $_SERVER['PHP_SELF'].$_my_uri;
function my_add_null_slashes( $string ) {
// return mysql_real_escape_string(stripslashes($string));
return addslashes(stripslashes($string));
}
function my_null_slashes($string) {
return $string;
}
if ( get_magic_quotes_gpc() == 1 ) {
$addslashes = 'my_add_null_slashes';
$stripslashes = 'stripslashes';
} else {
$addslashes = 'mysql_real_escape_string';
$stripslashes = 'my_null_slashes';
}
/**
* If MBString extension is loaded, then use it.
* Otherwise we will have to use include/utf8 library
*/
if (extension_loaded('mbstring')){
$strtolower = 'mb_strtolower';
$strtoupper = 'mb_strtoupper';
$substr = 'mb_substr';
$strpos = 'mb_strpos';
$strrpos = 'mb_strrpos';
$strlen = 'mb_strlen';
} else {
$strtolower = 'utf8_strtolower';
$strtoupper = 'utf8_strtoupper';
$substr = 'utf8_substr';
$strpos = 'utf8_strpos';
$strrpos = 'utf8_strrpos';
$strlen = 'utf8_strlen';
}
function get_default_theme() {
$themesDAO = new ThemesDAO();
$rows = $themesDAO->getDefaultTheme();
if (!is_dir(TR_INCLUDE_PATH . '../themes/' . $rows[0]['dir_name']))
return 'default';
else
return $rows[0]['dir_name'];
}
/**
* Convert all input to htmlentities output, in UTF-8.
* @param string input to be convert
* @param boolean true if we wish to change all newlines(\r\n) to a
tag, false otherwise.
* ref: http://php.net/manual/en/function.nl2br.php
* @author Harris Wong
* @date March 12, 2010
*/
function htmlentities_utf8($str, $use_nl2br=true){
$return = htmlentities($str, ENT_QUOTES, 'UTF-8');
if ($use_nl2br){
return nl2br($return);
}
return $return;
}
/**
* Convert all '&' to '&' from the input
* @param string any string input, mainly URLs.
* @return input with & replaced to '&'
* @author Harris Wong
* @date Oct 7, 2010
*/
function convertAmp($input){
$input = str_replace('&', '&', $input); //convert everything to '&' first
return str_replace('&', '&', $input);
}
function query_bit( $bitfield, $bit ) {
if (!is_int($bitfield)) {
$bitfield = intval($bitfield);
}
if (!is_int($bit)) {
$bit = intval($bit);
}
return ( $bitfield & $bit ) ? true : false;
}
?>