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97 lines
4.3 KiB
97 lines
4.3 KiB
<?php
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// Designed to be redirected from moodle/login/index.php
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require('../../config.php');
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$context = context_system::instance();
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$PAGE->set_url('/auth/shibboleth/index.php');
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$PAGE->set_context($context);
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// Support for WAYFless URLs.
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$target = optional_param('target', '', PARAM_LOCALURL);
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if (!empty($target) && empty($SESSION->wantsurl)) {
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$SESSION->wantsurl = $target;
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}
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if (isloggedin() && !isguestuser()) { // Nothing to do
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if (isset($SESSION->wantsurl) and (strpos($SESSION->wantsurl, $CFG->wwwroot) === 0)) {
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$urltogo = $SESSION->wantsurl; /// Because it's an address in this site
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unset($SESSION->wantsurl);
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} else {
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$urltogo = $CFG->wwwroot.'/'; /// Go to the standard home page
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unset($SESSION->wantsurl); /// Just in case
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}
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redirect($urltogo);
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}
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$pluginconfig = get_config('auth_shibboleth');
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$shibbolethauth = get_auth_plugin('shibboleth');
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// Check whether Shibboleth is configured properly
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if (empty($pluginconfig->user_attribute)) {
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print_error('shib_not_set_up_error', 'auth_shibboleth');
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}
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/// If we can find the Shibboleth attribute, save it in session and return to main login page
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if (!empty($_SERVER[$pluginconfig->user_attribute])) { // Shibboleth auto-login
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$frm = new stdClass();
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$frm->username = strtolower($_SERVER[$pluginconfig->user_attribute]);
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// The password is never actually used, but needs to be passed to the functions 'user_login' and
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// 'authenticate_user_login'. Shibboleth returns true for the function 'prevent_local_password', which is
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// used when setting the password in 'update_internal_user_password'. When 'prevent_local_password'
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// returns true, the password is set to 'not cached' (AUTH_PASSWORD_NOT_CACHED) in the Moodle DB. However,
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// rather than setting the password to a hard-coded value, we will generate one each time, in case there are
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// changes to the Shibboleth plugin and it is actually used.
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$frm->password = generate_password(8);
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/// Check if the user has actually submitted login data to us
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$reason = null;
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if ($shibbolethauth->user_login($frm->username, $frm->password)
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&& $user = authenticate_user_login($frm->username, $frm->password, false, $reason, false)) {
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complete_user_login($user);
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if (user_not_fully_set_up($USER, true)) {
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$urltogo = $CFG->wwwroot.'/user/edit.php?id='.$USER->id.'&course='.SITEID;
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// We don't delete $SESSION->wantsurl yet, so we get there later
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} else if (isset($SESSION->wantsurl) and (strpos($SESSION->wantsurl, $CFG->wwwroot) === 0)) {
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$urltogo = $SESSION->wantsurl; /// Because it's an address in this site
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unset($SESSION->wantsurl);
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} else {
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$urltogo = $CFG->wwwroot.'/'; /// Go to the standard home page
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unset($SESSION->wantsurl); /// Just in case
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}
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/// Go to my-moodle page instead of homepage if defaulthomepage enabled
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if (!has_capability('moodle/site:config',context_system::instance()) and !empty($CFG->defaulthomepage) && $CFG->defaulthomepage == HOMEPAGE_MY and !isguestuser()) {
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if ($urltogo == $CFG->wwwroot or $urltogo == $CFG->wwwroot.'/' or $urltogo == $CFG->wwwroot.'/index.php') {
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$urltogo = $CFG->wwwroot.'/my/';
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}
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}
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redirect($urltogo);
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exit;
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}
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else {
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// The Shibboleth user couldn't be mapped to a valid Moodle user
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print_error('shib_invalid_account_error', 'auth_shibboleth');
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}
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}
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// If we can find any (user independent) Shibboleth attributes but no user
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// attributes we probably didn't receive any user attributes
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elseif (!empty($_SERVER['HTTP_SHIB_APPLICATION_ID']) || !empty($_SERVER['Shib-Application-ID'])) {
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print_error('shib_no_attributes_error', 'auth_shibboleth' , '', '\''.$pluginconfig->user_attribute.'\', \''.$pluginconfig->field_map_firstname.'\', \''.$pluginconfig->field_map_lastname.'\' and \''.$pluginconfig->field_map_email.'\'');
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} else {
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print_error('shib_not_set_up_error', 'auth_shibboleth');
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}
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