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546 lines
20 KiB
546 lines
20 KiB
<?php
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/* For licensing terms, see /license.txt */
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/**
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* It is recommended that ALL Chamilo scripts include this important file.
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* This script manages
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* - http get, post, post_files, session, server-vars extraction into global namespace;
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* (which doesn't occur anymore when servertype config setting is set to test,
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* and which will disappear completely in Dokeos 1.6.1)
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* - include of /conf/configuration.php;
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* - include of several libraries: main_api, database, display, text, security;
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* - selecting the main database;
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* - include of language files.
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*
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* @package chamilo.include
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* @todo isn't configuration.php renamed to configuration.inc.php yet?
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* @todo use the $_configuration array for all the needed variables
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* @todo remove the code that displays the button that links to the install page
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* but use a redirect immediately. By doing so the $already_installed variable can be removed.
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* @todo make it possible to enable / disable the tracking through the Chamilo config page.
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*
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*/
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// Showing/hiding error codes in global error messages.
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define('SHOW_ERROR_CODES', false);
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// PHP version requirement.
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define('REQUIRED_PHP_VERSION', '5');
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// Determine the directory path where this current file lies.
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// This path will be useful to include the other intialisation files.
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$includePath = dirname(__FILE__);
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// PHP version check.
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if (!function_exists('version_compare') || version_compare(phpversion(), REQUIRED_PHP_VERSION, '<')) {
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$global_error_code = 1;
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// Incorrect PHP version.
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require $includePath.'/global_error_message.inc.php';
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die();
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}
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// @todo Isn't this file renamed to configuration.inc.php yet?
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// Include the main Chamilo platform configuration file.
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$main_configuration_file_path = $includePath.'/conf/configuration.php';
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$already_installed = false;
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if (file_exists($main_configuration_file_path)) {
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require_once $main_configuration_file_path;
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$already_installed = true;
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} else {
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$_configuration = array();
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}
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//Redirects to the main/install/ page
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if (!$already_installed) {
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$global_error_code = 2;
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// The system has not been installed yet.
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require $includePath.'/global_error_message.inc.php';
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die();
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}
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// Ensure that _configuration is in the global scope before loading
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// main_api.lib.php. This is particularly helpful for unit tests
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if (!isset($GLOBALS['_configuration'])) {
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$GLOBALS['_configuration'] = $_configuration;
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}
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// Code for trnasitional purposes, it can be removed right before the 1.8.7 release.
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if (empty($_configuration['system_version'])) {
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$_configuration['system_version'] = $_configuration['dokeos_version'];
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$_configuration['system_stable'] = $_configuration['dokeos_stable'];
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$_configuration['software_url'] = 'http://www.chamilo.org/';
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}
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// For backward compatibility.
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$_configuration['dokeos_version'] = $_configuration['system_version'];
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$_configuration['dokeos_stable'] = $_configuration['system_stable'];
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// Include the main Chamilo platform library file.
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require_once $includePath.'/lib/main_api.lib.php';
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// Do not over-use this variable. It is only for this script's local use.
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$lib_path = api_get_path(LIBRARY_PATH);
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// Fix bug in IIS that doesn't fill the $_SERVER['REQUEST_URI'].
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api_request_uri();
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// Add the path to the pear packages to the include path
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ini_set('include_path', api_create_include_path_setting());
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// This is for compatibility with MAC computers.
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ini_set('auto_detect_line_endings', '1');
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// Include the libraries that are necessary everywhere
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require_once $lib_path.'database.lib.php';
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require_once $lib_path.'display.lib.php';
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require_once $lib_path.'text.lib.php';
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require_once $lib_path.'array.lib.php';
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require_once $lib_path.'security.lib.php';
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require_once $lib_path.'events.lib.inc.php';
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require_once $lib_path.'debug.lib.php';
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require_once $lib_path.'usermanager.lib.php';
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/* DATABASE CONNECTION */
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// @todo: this shouldn't be done here. It should be stored correctly during installation.
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if (empty($_configuration['statistics_database']) && $already_installed) {
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$_configuration['statistics_database'] = $_configuration['main_database'];
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}
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global $database_connection;
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// Connect to the server database and select the main chamilo database.
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if (!($conn_return = @Database::connect(
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array(
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'server' => $_configuration['db_host'],
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'username' => $_configuration['db_user'],
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'password' => $_configuration['db_password'],
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'persistent' => $_configuration['db_persistent_connection'] // When $_configuration['db_persistent_connection'] is set, it is expected to be a boolean type.
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)))) {
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$global_error_code = 3;
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// The database server is not available or credentials are invalid.
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require $includePath.'/global_error_message.inc.php';
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die();
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}
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if (!$_configuration['db_host']) {
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$global_error_code = 4;
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// A configuration option about database server is missing.
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require $includePath.'/global_error_message.inc.php';
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die();
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}
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/* RETRIEVING ALL THE CHAMILO CONFIG SETTINGS FOR MULTIPLE URLs FEATURE*/
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if (!empty($_configuration['multiple_access_urls'])) {
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$_configuration['access_url'] = 1;
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$access_urls = api_get_access_urls();
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$protocol = ((!empty($_SERVER['HTTPS']) && strtoupper($_SERVER['HTTPS']) != 'OFF') ? 'https' : 'http').'://';
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$request_url1 = $protocol.$_SERVER['SERVER_NAME'].'/';
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$request_url2 = $protocol.$_SERVER['HTTP_HOST'].'/';
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foreach ($access_urls as & $details) {
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if ($request_url1 == $details['url'] or $request_url2 == $details['url']) {
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$_configuration['access_url'] = $details['id'];
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}
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}
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} else {
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$_configuration['access_url'] = 1;
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}
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// The system has not been designed to use special SQL modes that were introduced since MySQL 5.
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Database::query("set session sql_mode='';");
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if (!Database::select_db($_configuration['main_database'], $database_connection)) {
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$global_error_code = 5;
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// Connection to the main Chamilo database is impossible, it might be missing or restricted or its configuration option might be incorrect.
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require $includePath.'/global_error_message.inc.php';
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die();
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}
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/* Initialization of the default encodings */
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// The platform's character set must be retrieved at this early moment.
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$sql = "SELECT selected_value FROM settings_current WHERE variable = 'platform_charset';";
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$result = Database::query($sql);
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while ($row = @Database::fetch_array($result)) {
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$charset = $row[0];
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}
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if (empty($charset)) {
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$charset = 'UTF-8';
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}
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// Preserving the value of the global variable $charset.
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$charset_initial_value = $charset;
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// Initialization of the internationalization library.
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api_initialize_internationalization();
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// Initialization of the default encoding that will be used by the multibyte string routines in the internationalization library.
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api_set_internationalization_default_encoding($charset);
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// Initialization of the database encoding to be used.
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Database::query("SET SESSION character_set_server='utf8';");
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Database::query("SET SESSION collation_server='utf8_general_ci';");
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if (api_is_utf8($charset)) {
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// See Bug #1802: For UTF-8 systems we prefer to use "SET NAMES 'utf8'" statement in order to avoid a bizarre problem with Chinese language.
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Database::query("SET NAMES 'utf8';");
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} else {
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Database::query("SET CHARACTER SET '" . Database::to_db_encoding($charset) . "';");
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}
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// Start session after the internationalization library has been initialized.
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api_session_start($already_installed);
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// access_url == 1 is the default chamilo location
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if ($_configuration['access_url'] != 1) {
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$url_info = api_get_access_url($_configuration['access_url']);
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if ($url_info['active'] == 1) {
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$settings_by_access = & api_get_settings(null, 'list', $_configuration['access_url'], 1);
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foreach ($settings_by_access as & $row) {
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if (empty($row['variable'])) {
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$row['variable'] = 0;
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}
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if (empty($row['subkey'])) {
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$row['subkey'] = 0;
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}
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if (empty($row['category'])) {
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$row['category'] = 0;
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}
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$settings_by_access_list[$row['variable']][$row['subkey']][$row['category']] = $row;
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}
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}
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}
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$result = & api_get_settings(null, 'list', 1);
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foreach ($result as & $row) {
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if ($_configuration['access_url'] != 1) {
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if ($url_info['active'] == 1) {
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$var = empty($row['variable']) ? 0 : $row['variable'];
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$subkey = empty($row['subkey']) ? 0 : $row['subkey'];
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$category = empty($row['category']) ? 0 : $row['category'];
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}
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if ($row['access_url_changeable'] == 1 && $url_info['active'] == 1) {
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if ($settings_by_access_list[$var][$subkey][$category]['selected_value'] != '') {
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if ($row['subkey'] == null) {
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$_setting[$row['variable']] = $settings_by_access_list[$var][$subkey][$category]['selected_value'];
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} else {
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$_setting[$row['variable']][$row['subkey']] = $settings_by_access_list[$var][$subkey][$category]['selected_value'];
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}
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} else {
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if ($row['subkey'] == null) {
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$_setting[$row['variable']] = $row['selected_value'];
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} else {
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$_setting[$row['variable']][$row['subkey']] = $row['selected_value'];
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}
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}
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} else {
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if ($row['subkey'] == null) {
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$_setting[$row['variable']] = $row['selected_value'];
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} else {
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$_setting[$row['variable']][$row['subkey']] = $row['selected_value'];
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}
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}
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} else {
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if ($row['subkey'] == null) {
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$_setting[$row['variable']] = $row['selected_value'];
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} else {
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$_setting[$row['variable']][$row['subkey']] = $row['selected_value'];
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}
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}
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}
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$result = & api_get_settings('Plugins', 'list', $_configuration['access_url']);
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$_plugins = array();
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foreach ($result as & $row) {
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$key = & $row['variable'];
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if (is_string($_setting[$key])) {
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$_setting[$key] = array();
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}
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$_setting[$key][] = $row['selected_value'];
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$_plugins[$key][] = $row['selected_value'];
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}
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//load array Kses for Htmlpurifier
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require_once $lib_path.'formvalidator/Rule/allowed_tags.inc.php';
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//load htmpurifier
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require_once $lib_path.'htmlpurifier/library/HTMLPurifier.auto.php';
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// include the local (contextual) parameters of this course or section
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require $includePath.'/local.inc.php';
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// ===== "who is logged in?" module section =====
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require_once $lib_path.'online.inc.php';
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// check and modify the date of user in the track.e.online table
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if (!$x = strpos($_SERVER['PHP_SELF'], 'whoisonline.php')) {
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LoginCheck(isset($_user['user_id']) ? $_user['user_id'] : '', $_configuration['statistics_database']);
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}
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// ===== end "who is logged in?" module section =====
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if (api_get_setting('server_type') == 'test') {
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/*
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Server type is test
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- high error reporting level
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- only do addslashes on $_GET and $_POST
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*/
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if (IS_PHP_53) {
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error_reporting(E_ALL & ~E_NOTICE & ~E_DEPRECATED);
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} else {
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error_reporting(E_ALL & ~E_NOTICE);
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}
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//error_reporting(E_ALL);
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//Addslashes to all $_GET variables
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foreach ($_GET as $key => $val) {
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if (!ini_get('magic_quotes_gpc')) {
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if (is_string($val)) {
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$_GET[$key] = addslashes($val);
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}
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}
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}
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//Addslashes to all $_POST variables
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foreach ($_POST as $key => $val) {
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if (!ini_get('magic_quotes_gpc')) {
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if (is_string($val)) {
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$_POST[$key] = addslashes($val);
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}
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}
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}
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} else {
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/*
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Server type is not test
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- normal error reporting level
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- full fake register globals block
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*/
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error_reporting(E_COMPILE_ERROR | E_ERROR | E_CORE_ERROR);
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// TODO: These obsolete variables $HTTP_* to be check whether they are actually used.
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if (!isset($HTTP_GET_VARS)) { $HTTP_GET_VARS = $_GET; }
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if (!isset($HTTP_POST_VARS)) { $HTTP_POST_VARS = $_POST; }
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if (!isset($HTTP_POST_FILES)) { $HTTP_POST_FILES = $_FILES; }
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if (!isset($HTTP_SESSION_VARS)) { $HTTP_SESSION_VARS = $_SESSION; }
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if (!isset($HTTP_SERVER_VARS)) { $HTTP_SERVER_VARS = $_SERVER; }
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// Register SESSION variables into $GLOBALS
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if (sizeof($HTTP_SESSION_VARS)) {
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if (!is_array($_SESSION)) {
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$_SESSION = array();
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}
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foreach ($HTTP_SESSION_VARS as $key => $val) {
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$_SESSION[$key] = $HTTP_SESSION_VARS[$key];
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$GLOBALS[$key] = $HTTP_SESSION_VARS[$key];
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}
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}
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// Register SERVER variables into $GLOBALS
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if (sizeof($HTTP_SERVER_VARS)) {
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$_SERVER = array();
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foreach ($HTTP_SERVER_VARS as $key => $val) {
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$_SERVER[$key] = $HTTP_SERVER_VARS[$key];
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if (!isset($_SESSION[$key]) && $key != 'includePath' && $key != 'rootSys' && $key!= 'clarolineRepositorySys' && $key!= 'lang_path' && $key!= 'extAuthSource' && $key!= 'thisAuthSource' && $key!= 'main_configuration_file_path' && $key!= 'phpDigIncCn' && $key!= 'drs') {
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$GLOBALS[$key]=$HTTP_SERVER_VARS[$key];
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}
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}
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}
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}
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/* LOAD LANGUAGE FILES SECTION */
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// if we use the javascript version (without go button) we receive a get
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// if we use the non-javascript version (with the go button) we receive a post
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$user_language = '';
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if (!empty($_GET['language'])) {
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$user_language = $_GET['language'];
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}
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if (!empty($_POST['language_list'])) {
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$user_language = str_replace('index.php?language=', '', $_POST['language_list']);
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}
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// Include all files (first english and then current interface language)
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$langpath = api_get_path(SYS_LANG_PATH);
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/* This will only work if we are in the page to edit a sub_language */
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if (api_get_self() == api_get_path(REL_PATH).'main/admin/sub_language.php' || api_get_self() == api_get_path(REL_PATH).'main/admin/sub_language_ajax.inc.php') {
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require_once '../admin/sub_language.class.php';
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// getting the arrays of files i.e notification, trad4all, etc
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$language_files_to_load = SubLanguageManager::get_all_data_of_dokeos_folder(api_get_path(SYS_LANG_PATH).'english', true);
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//getting parent info
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$parent_language = SubLanguageManager::get_all_information_of_language(intval($_REQUEST['id']));
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//getting sub language info
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$sub_language = SubLanguageManager::get_all_information_of_language(intval($_REQUEST['sub_language_id']));
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$english_language_array = $parent_language_array = $sub_language_array = array();
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foreach ($language_files_to_load as $language_file_item) {
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$lang_list_pre = array_keys($GLOBALS);
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include $langpath.'english/'.$language_file_item.'.inc.php'; //loading english
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$lang_list_post = array_keys($GLOBALS);
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$lang_list_result = array_diff($lang_list_post, $lang_list_pre);
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unset($lang_list_pre);
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// english language array
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$english_language_array[$language_file_item] = compact($lang_list_result);
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//cleaning the variables
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foreach($lang_list_result as $item) {
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unset(${$item});
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}
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$parent_file = $langpath.$parent_language['dokeos_folder'].'/'.$language_file_item.'.inc.php';
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if (is_file($parent_file)) {
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include_once $parent_file;
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}
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// parent language array
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$parent_language_array[$language_file_item] = compact($lang_list_result);
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//cleaning the variables
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foreach($lang_list_result as $item) {
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unset(${$item});
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}
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$sub_file = $langpath.$sub_language['dokeos_folder'].'/'.$language_file_item.'.inc.php';
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if (is_file($sub_file)) {
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include $sub_file;
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}
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// sub language array
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$sub_language_array[$language_file_item] = compact($lang_list_result);
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//cleaning the variables
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foreach($lang_list_result as $item) {
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unset(${$item});
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}
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}
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}
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// Checking if we have a valid language. If not we set it to the platform language.
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$valid_languages = api_get_languages();
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if (!empty($valid_languages)) {
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if (!in_array($user_language, $valid_languages['folder'])) {
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$user_language = api_get_setting('platformLanguage');
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}
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if (in_array($user_language, $valid_languages['folder']) && (isset($_GET['language']) || isset($_POST['language_list']))) {
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$user_selected_language = $user_language; // $_GET['language'];
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$_SESSION['user_language_choice'] = $user_selected_language;
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$platformLanguage = $user_selected_language;
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} else {
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$platformLanguage = api_get_setting('platformLanguage');
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}
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if (isset($_SESSION['user_language_choice'])) {
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$language_interface = $_SESSION['user_language_choice'];
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} else {
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$language_interface = api_get_setting('platformLanguage');
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}
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if (isset($_user['language'])) {
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$language_interface = $_user['language'];
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}
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if ($_course['language']) {
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$language_interface = $_course['language'];
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}
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}
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// Sometimes the variable $language_interface is changed
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// temporarily for achieving translation in different language.
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// We need to save the genuine value of this variable and
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// to use it within the function get_lang(...).
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$language_interface_initial_value = $language_interface;
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/**
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* Include all necessary language files
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* - trad4all
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* - notification
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* - custom tool language files
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*/
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$language_files = array();
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$language_files[] = 'trad4all';
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$language_files[] = 'notification';
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$language_files[] = 'accessibility';
|
|
if (isset($language_file)) {
|
|
if (!is_array($language_file)) {
|
|
$language_files[] = $language_file;
|
|
} else {
|
|
$language_files = array_merge($language_files, $language_file);
|
|
}
|
|
}
|
|
// if a set of language files has been properly defined
|
|
if (is_array($language_files)) {
|
|
// if the sub-language feature is on
|
|
if (api_get_setting('allow_use_sub_language') == 'true') {
|
|
require_once api_get_path(SYS_CODE_PATH).'admin/sub_language.class.php';
|
|
$parent_path = SubLanguageManager::get_parent_language_path($language_interface);
|
|
foreach ($language_files as $index => $language_file) {
|
|
// include English
|
|
include $langpath.'english/'.$language_file.'.inc.php';
|
|
// prepare string for current language and its parent
|
|
$lang_file = $langpath.$language_interface.'/'.$language_file.'.inc.php';
|
|
$parent_lang_file = $langpath.$parent_path.'/'.$language_file.'.inc.php';
|
|
// load the parent language file first
|
|
if (file_exists($parent_lang_file)) {
|
|
include $parent_lang_file;
|
|
}
|
|
// overwrite the parent language translations if there is a child
|
|
if (file_exists($lang_file)) {
|
|
include $lang_file;
|
|
}
|
|
}
|
|
} else {
|
|
// if the sub-languages feature is not on, then just load the
|
|
// set language interface
|
|
foreach ($language_files as $index => $language_file) {
|
|
// include English
|
|
include $langpath.'english/'.$language_file.'.inc.php';
|
|
// prepare string for current language
|
|
$langfile = $langpath.$language_interface.'/'.$language_file.'.inc.php';
|
|
if (file_exists($langfile)) {
|
|
include $langfile;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
// The global variable $charset has been defined in a language file too (trad4all.inc.php), this is legacy situation.
|
|
// So, we have to reassign this variable again in order to keep its value right.
|
|
$charset = $charset_initial_value;
|
|
|
|
// The global variable $text_dir has been defined in the language file trad4all.inc.php.
|
|
// For determing text direction correspondent to the current language we use now information from the internationalization library.
|
|
$text_dir = api_get_text_direction();
|
|
|
|
//Update of the logout_date field in the table track_e_login (needed for the calculation of the total connection time)
|
|
|
|
if ($_configuration['tracking_enabled'] && !isset($_SESSION['login_as']) && isset($_user)) {
|
|
// if $_SESSION['login_as'] is set, then the user is an admin logged as the user
|
|
|
|
$tbl_track_login = Database :: get_statistic_table(TABLE_STATISTIC_TRACK_E_LOGIN);
|
|
$sql_last_connection = "SELECT login_id, login_date FROM $tbl_track_login WHERE login_user_id='".$_user["user_id"]."' ORDER BY login_date DESC LIMIT 0,1";
|
|
|
|
$q_last_connection = Database::query($sql_last_connection);
|
|
if (Database::num_rows($q_last_connection) > 0) {
|
|
$i_id_last_connection = Database::result($q_last_connection, 0, 'login_id');
|
|
|
|
// is the latest logout_date still relevant?
|
|
$sql_logout_date = "SELECT logout_date FROM $tbl_track_login WHERE login_id=$i_id_last_connection";
|
|
$q_logout_date = Database::query($sql_logout_date);
|
|
$res_logout_date = convert_mysql_date(Database::result($q_logout_date,0,'logout_date'));
|
|
|
|
if ($res_logout_date < time() - $_configuration['session_lifetime']) {
|
|
// it isn't, we should create a fresh entry
|
|
event_login();
|
|
// now that it's created, we can get its ID and carry on
|
|
$q_last_connection = Database::query($sql_last_connection);
|
|
$i_id_last_connection = Database::result($q_last_connection, 0, 'login_id');
|
|
}
|
|
|
|
$s_sql_update_logout_date = "UPDATE $tbl_track_login SET logout_date=NOW() WHERE login_id='$i_id_last_connection'";
|
|
Database::query($s_sql_update_logout_date);
|
|
}
|
|
} |