Proyectos de Subversion Moodle

<?php

    require_once("../../config.php");

    require_once($CFG->dirroot."/auth/shibboleth/auth.php");

    $idp = optional_param('idp', null, PARAM_RAW);

    // Check for timed out sessions.

    if (!empty($SESSION->has_timed_out)) {

        $session_has_timed_out = true;

        $SESSION->has_timed_out = false;

    } else {

        $session_has_timed_out = false;

    }

    // Define variables used in page.

    $isvalid = true;

    $site = get_site();

    $loginsite = get_string("loginsite");

    $loginurl = (!empty($CFG->alternateloginurl)) ? $CFG->alternateloginurl : '';

    $config = get_config('auth_shibboleth');

    if (!empty($CFG->registerauth) or is_enabled_auth('none') or !empty($config->auth_instructions)) {

        $showinstructions = true;

    } else {

        $showinstructions = false;

    }

    $idplist = get_idp_list($config->organization_selection);

    if (isset($idp)) {

        if (isset($idplist[$idp])) {

            set_saml_cookie($idp);

            $targeturl = new moodle_url('/auth/shibboleth/index.php');

            $idpinfo = $idplist[$idp];

            // Redirect to SessionInitiator with entityID as argument.

            if (isset($idpinfo[1]) && !empty($idpinfo[1])) {

                $sso = $idpinfo[1];

            } else {

                $sso = '/Shibboleth.sso';

            }

            // For Shibboleth 1.x Service Providers.

            header('Location: ' . $sso . '?providerId=' . urlencode($idp) . '&target=' . urlencode($targeturl->out()));

        } else {

            $isvalid = false;

        }

    }

    $loginsite = get_string("loginsite");

    $PAGE->set_url('/auth/shibboleth/login.php');

    $PAGE->set_context(context_system::instance());

    $PAGE->navbar->add($loginsite);

    $PAGE->set_title($loginsite);

    $PAGE->set_heading($site->fullname);

    $PAGE->set_pagelayout('login');

    echo $OUTPUT->header();

    if (isloggedin() and !isguestuser()) {

        // Prevent logging when already logged in, we do not want them to relogin by accident because sesskey would be changed.

        echo $OUTPUT->box_start();

        $params = array('sesskey' => sesskey(), 'loginpage' => 1);

        $logout = new single_button(new moodle_url('/login/logout.php', $params), get_string('logout'), 'post');

        $continue = new single_button(new moodle_url('/'), get_string('cancel'), 'get');

        echo $OUTPUT->confirm(get_string('alreadyloggedin', 'error', fullname($USER)), $logout, $continue);

        echo $OUTPUT->box_end();

    } else {

        // Print login page.

        $selectedidp = '-';

        if (isset($_COOKIE['_saml_idp'])) {

            $idpcookie = generate_cookie_array($_COOKIE['_saml_idp']);

            do {

                $selectedidp = array_pop($idpcookie);

            } while (!isset($idplist[$selectedidp]) && count($idpcookie) > 0);

        }

        $idps = [];

        foreach ($idplist as $value => $data) {

            $name = reset($data);

            $selected = $value === $selectedidp;

            $idps[] = (object)[

                'name' => $name,

                'value' => $value,

                'selected' => $selected

            ];

        }

        // Whether the user can sign up.

        $cansignup = !empty($CFG->registerauth);

        // Default instructions.

        $instructions = format_text($config->auth_instructions);

        if (is_enabled_auth('none')) {

            $instructions = get_string('loginstepsnone');

        } else if ($cansignup) {

            if ($CFG->registerauth === 'email' && empty($instructions)) {

                $instructions = get_string('loginsteps');

            }

        }

        // Build the template context data.

        $templatedata = (object)[

            'adminemail' => get_admin()->email,

            'cansignup' => $cansignup,

            'guestlogin' => $CFG->guestloginbutton,

            'guestloginurl' => new moodle_url('/login/index.php'),

            'idps' => $idps,

            'instructions' => $instructions,

            'loginname' => $config->login_name ?? null,

            'logintoken' => \core\session\manager::get_login_token(),

            'loginurl' => new moodle_url('/auth/shibboleth/login.php'),

            'showinstructions' => $showinstructions,

            'signupurl' => new moodle_url('/login/signup.php'),

            'isvalid' => $isvalid

        ];

        // Render the login form.

        echo $OUTPUT->render_from_template('auth_shibboleth/login_form', $templatedata);

    }

    echo $OUTPUT->footer();