chamilo-lms2/main/auth/cas/cas_var.inc.php

<?php

/* This file contains all the configuration variable for the cas module
 * In the future, these will be in the database
*/
require_once 'lib/CAS.php';

global $cas_auth_ver, $cas_auth_server, $cas_auth_port, $cas_auth_uri;

$cas_auth_server = api_get_setting('cas_server');
$cas_auth_uri = api_get_setting('cas_server_uri');
$cas_auth_port = intval(api_get_setting('cas_port'));
switch (api_get_setting('cas_protocol')) {
    case 'CAS1':
        $cas_auth_ver = CAS_VERSION_1_0;
        break;
    case 'CAS2':
        $cas_auth_ver = CAS_VERSION_2_0;
        break;
    case 'SAML':
        $cas_auth_ver = SAML_VERSION_1_1;
        break;
    default:
        $cas_auth_ver = CAS_VERSION_2_0;
        break;
}

$cas_auth_uri = api_get_setting('cas_server_uri');
if (!is_string($cas_auth_uri)) {
    $cas_auth_uri = '';
}