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<?php
/**
* setup.php - Sets up sessions, connects to databases and so on
*
* Normally this is only called by the main config.php file
* Normally this file does not need to be edited.
* @author Martin Dougiamas
* @version $Id$
* @license http://www.gnu.org/copyleft/gpl.html GNU Public License
* @package moodlecore
*/
////// DOCUMENTATION IN PHPDOC FORMAT FOR MOODLE GLOBALS AND COMMON OBJECT TYPES /////////////
/**
* This global variable is read in from the 'config' table.
*
* Some typical settings in the $CFG global:
* - $USER->emailstop - Does the user want email sent to them?
* - $USER->email - The user's email address.
* - $USER->id - The unique integer identified of this user in the 'user' table.
* - $USER->email - The user's email address.
* - $USER->firstname - The user's first name.
* - $USER->lastname - The user's last name.
* - $USER->username - The user's login username.
* - $USER->secret - The user's ?.
* - $USER->lang - The user's language choice.
*
* @global object(user) $USER
*/
global $USER;
/**
* $USER is a global instance of a typical $user record.
*
* Items found in the user record:
* - $CFG->wwwroot - Path to moodle index directory in url format.
* - $CFG->dataroot - Path to moodle index directory on server's filesystem.
* - $CFG->libroot - Path to moodle's library folder on server's filesystem.
*
* @global object(cfg) $CFG
*/
global $CFG;
/**
* Definition of session type
* @global object(session) $SESSION
*/
global $SESSION;
/**
* Definition of course type
* @global object(course) $COURSE
*/
global $COURSE;
/**
* Definition of db type
* @global object(db) $db
*/
global $db;
/**
* $THEME is a global that defines the site theme.
*
* Items found in the theme record:
* - $THEME->cellheading - Cell colors.
* - $THEME->cellheading2 - Alternate cell colors.
*
* @global object(theme) $THEME
*/
global $THEME;
if (!isset($CFG->wwwroot)) {
die;
}
if (!isset($CFG->enrol)) { // This is a hack to fix bug 1598
$CFG->enrol = 'internal';
}
/// If there are any errors in the standard libraries we want to know!
error_reporting(E_ALL);
/// Connect to the database using adodb
$CFG->libdir = $CFG->dirroot .'/lib';
require_once($CFG->libdir .'/adodb/adodb.inc.php'); // Database access functions
$db = &ADONewConnection($CFG->dbtype);
error_reporting(0); // Hide errors
if (!isset($CFG->dbpersist) or !empty($CFG->dbpersist)) { // Use persistent connection (default)
$dbconnected = $db->PConnect($CFG->dbhost,$CFG->dbuser,$CFG->dbpass,$CFG->dbname);
} else { // Use single connection
$dbconnected = $db->Connect($CFG->dbhost,$CFG->dbuser,$CFG->dbpass,$CFG->dbname);
}
if (! $dbconnected) {
echo '<font color="#990000">';
echo '<p>Error: Moodle could not connect to the database.</p>';
echo '<p>It\'s possible the database itself is just not working at the moment.</p>';
echo '<p>The admin should
also check that the database details have been correctly specified in config.php</p>';
echo '<p>Database host: '. $CFG->dbhost .'<br />';
echo 'Database name: '. $CFG->dbname .'<br />';
echo 'Database user: '. $CFG->dbuser .'<br />';
if (!isset($CFG->dbpersist)) {
echo '<p>The admin should also try setting this in config.php: $CFG->dbpersist = false; </p>';
}
echo '</font>';
die;
}
error_reporting(E_ALL); // Show errors from now on.
if (!isset($CFG->prefix)) { // Just in case it isn't defined in config.php
$CFG->prefix = '';
}
/// Define admin directory
if (!isset($CFG->admin)) { // Just in case it isn't defined in config.php
$CFG->admin = 'admin'; // This is relative to the wwwroot and dirroot
}
/// Load up standard libraries
require_once($CFG->libdir .'/weblib.php'); // Functions for producing HTML
require_once($CFG->libdir .'/datalib.php'); // Functions for accessing databases
require_once($CFG->libdir .'/moodlelib.php'); // Other general-purpose functions
/// Increase memory limits if possible
@ini_set('memory_limit' , '64M'); // We should never NEED this much but just in case...
/// Load up any configuration from the config table
if ($configs = get_records('config')) {
$CFG = (array)$CFG;
foreach ($configs as $config) {
$CFG[$config->name] = $config->value;
}
$CFG = (object)$CFG;
unset($configs);
unset($config);
}
/// Set error reporting back to normal
if (empty($CFG->debug)) {
$CFG->debug = 7;
}
error_reporting($CFG->debug);
/// File permissions on created directories in the $CFG->dataroot
if (empty($CFG->directorypermissions)) {
$CFG->directorypermissions = 0777; // Must be octal (that's why it's here)
}
/// Set up smarty template system
require_once($CFG->libdir .'/smarty/Smarty.class.php');
$smarty = new Smarty;
$smarty->template_dir = $CFG->dirroot .'/templates/'. $CFG->template;
if (!file_exists($CFG->dataroot .'/cache')) {
make_upload_directory('cache');
}
$smarty->compile_dir = $CFG->dataroot .'/cache';
/// Set session timeouts
if (!empty($CFG->sessiontimeout)) {
ini_set('session.gc_maxlifetime', $CFG->sessiontimeout);
}
/// Set custom session path
if (!file_exists($CFG->dataroot .'/sessions')) {
make_upload_directory('sessions');
}
ini_set('session.save_path', $CFG->dataroot .'/sessions');
/// Set sessioncookie variable if it isn't already
if (!isset($CFG->sessioncookie)) {
$CFG->sessioncookie = '';
}
/// Configure ampersands in URLs
@ini_set('arg_separator.output', '&amp;');
/// Location of standard files
$CFG->wordlist = $CFG->libdir .'/wordlist.txt';
$CFG->javascript = $CFG->libdir .'/javascript.php';
$CFG->moddata = 'moddata';
/// Load up theme variables (colours etc)
if (!isset($CFG->theme)) {
$CFG->theme = 'standard';
}
include($CFG->dirroot .'/theme/'. $CFG->theme .'/config.php');
$CFG->stylesheet = $CFG->wwwroot .'/theme/'. $CFG->theme .'/styles.php';
$CFG->header = $CFG->dirroot .'/theme/'. $CFG->theme .'/header.html';
$CFG->footer = $CFG->dirroot .'/theme/'. $CFG->theme .'/footer.html';
if (empty($THEME->custompix)) {
$CFG->pixpath = $CFG->wwwroot .'/pix';
$CFG->modpixpath = $CFG->wwwroot .'/mod';
} else {
$CFG->pixpath = $CFG->wwwroot .'/theme/'. $CFG->theme .'/pix';
$CFG->modpixpath = $CFG->wwwroot .'/theme/'. $CFG->theme .'/pix/mod';
}
/// A hack to get around magic_quotes_gpc being turned off
if (!ini_get_bool('magic_quotes_gpc') ) {
foreach ($_GET as $key => $var) {
if (!is_array($var)) {
$_GET[$key] = addslashes($var);
} else {
foreach ($var as $arrkey => $arrvar) {
$var[$arrkey] = addslashes($arrvar);
}
$_GET[$key] = $var;
}
}
foreach ($_POST as $key => $var) {
if (!is_array($var)) {
$_POST[$key] = addslashes($var);
} else {
foreach ($var as $arrkey => $arrvar) {
$var[$arrkey] = addslashes($arrvar);
}
$_POST[$key] = $var;
}
}
}
/// The following is a hack to get around the problem of PHP installations
/// that have "register_globals" turned off (default since PHP 4.1.0).
/// Eventually I'll go through and upgrade all the code to make this unnecessary
if (isset($_GET)) {
extract($_GET, EXTR_SKIP); // Skip existing variables, ie CFG
}
if (isset($_POST)) {
extract($_POST, EXTR_SKIP); // Skip existing variables, ie CFG
}
if (isset($_SERVER)) {
extract($_SERVER);
}
/// Load up global environment variables
class object {};
if (!isset($nomoodlecookie)) {
session_name('MoodleSession'.$CFG->sessioncookie);
@session_start();
if (! isset($_SESSION['SESSION'])) {
$_SESSION['SESSION'] = new object;
}
if (! isset($_SESSION['USER'])) {
$_SESSION['USER'] = new object;
}
$SESSION = &$_SESSION['SESSION']; // Makes them easier to reference
$USER = &$_SESSION['USER'];
}
if (isset($FULLME)) {
$ME = $FULLME;
} else {
$FULLME = qualified_me();
$ME = strip_querystring($FULLME);
}
/// In VERY rare cases old PHP server bugs (it has been found on PHP 4.1.2 running
/// as a CGI under IIS on Windows) may require that you uncomment the following:
// session_register("USER");
// session_register("SESSION");
/// Set language/locale of printed times. If user has chosen a language that
/// that is different from the site language, then use the locale specified
/// in the language file. Otherwise, if the admin hasn't specified a locale
/// then use the one from the default language. Otherwise (and this is the
/// majority of cases), use the stored locale specified by admin.
if (isset($_GET['lang'])) {
if (!detect_munged_arguments($lang, 0) and file_exists($CFG->dirroot .'/lang/'. $lang)) {
$SESSION->lang = $lang;
$SESSION->encoding = get_string('thischarset');
}
}
if (empty($CFG->lang)) {
$CFG->lang = "en";
}
moodle_setlocale();
if (!empty($CFG->opentogoogle)) {
if (empty($_SESSION['USER'])) {
if (!empty($_SERVER['HTTP_USER_AGENT'])) {
if (strpos($_SERVER['HTTP_USER_AGENT'], 'Googlebot') !== false ) {
$USER = guest_user();
}
if (strpos($_SERVER['HTTP_USER_AGENT'], 'google.com') !== false ) {
$USER = guest_user();
}
}
if (empty($_SESSION['USER']) and !empty($_SERVER['HTTP_REFERER'])) {
if (strpos($_SERVER['HTTP_REFERER'], 'google') !== false ) {
$USER = guest_user();
}
}
}
}
if ($CFG->theme == 'standardxhtml') { // Temporary measure to help with XHTML validation
if (empty($_SESSION['USER'])) { // Allow W3CValidator in as user called w3cvalidator (or guest)
if ((strpos($_SERVER['HTTP_USER_AGENT'], 'W3C_Validator') !== false) or
(strpos($_SERVER['HTTP_USER_AGENT'], 'Cynthia') !== false )) {
if ($USER = get_user_info_from_db("username", "w3cvalidator")) {
$USER->loggedin = true;
$USER->site = $CFG->wwwroot;
} else {
$USER = guest_user();
}
}
}
}
?>
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