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efrain |
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<?php
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// Allows a teacher/admin to login as another user (in stealth mode).
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require_once('../config.php');
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require_once('lib.php');
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$id = optional_param('id', SITEID, PARAM_INT); // course id
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$redirect = optional_param('redirect', 0, PARAM_BOOL);
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$url = new moodle_url('/course/loginas.php', array('id'=>$id));
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$PAGE->set_url($url);
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// Reset user back to their real self if needed, for security reasons you need to log out and log in again.
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if (\core\session\manager::is_loggedinas()) {
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require_sesskey();
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require_logout();
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// We can not set wanted URL here because the session is closed.
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redirect(new moodle_url($url, array('redirect'=>1)));
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}
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if ($redirect) {
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if ($id && $id != SITEID) {
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$SESSION->wantsurl = "$CFG->wwwroot/course/view.php?id=".$id;
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} else {
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$SESSION->wantsurl = "$CFG->wwwroot/?redirect=1";
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}
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redirect(get_login_url());
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}
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// Try log in as this user.
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$userid = required_param('user', PARAM_INT);
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require_sesskey();
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$course = $DB->get_record('course', array('id'=>$id), '*', MUST_EXIST);
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// User must be logged in.
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$systemcontext = context_system::instance();
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$coursecontext = context_course::instance($course->id);
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require_login();
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if (has_capability('moodle/user:loginas', $systemcontext)) {
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if (is_siteadmin($userid)) {
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throw new \moodle_exception('nologinas');
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}
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$context = $systemcontext;
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$PAGE->set_context($context);
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} else {
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require_login($course);
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require_capability('moodle/user:loginas', $coursecontext);
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if (is_siteadmin($userid)) {
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throw new \moodle_exception('nologinas');
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}
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if (!is_enrolled($coursecontext, $userid)) {
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throw new \moodle_exception('usernotincourse');
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}
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$context = $coursecontext;
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// Check if course has SEPARATEGROUPS and user is part of that group.
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if (groups_get_course_groupmode($course) == SEPARATEGROUPS &&
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!has_capability('moodle/site:accessallgroups', $context)) {
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$samegroup = false;
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if ($groups = groups_get_all_groups($course->id, $USER->id)) {
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foreach ($groups as $group) {
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if (groups_is_member($group->id, $userid)) {
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$samegroup = true;
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break;
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}
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}
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}
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if (!$samegroup) {
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throw new \moodle_exception('nologinas');
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}
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}
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}
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// Login as this user and return to course home page.
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\core\session\manager::loginas($userid, $context);
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// Add a notification to let the logged in as user know that all content will be force cleaned
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// while in this session.
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\core\notification::info(get_string('sessionforceclean', 'core'));
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$newfullname = fullname($USER, true);
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$strloginas = get_string('loginas');
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$strloggedinas = get_string('loggedinas', '', $newfullname);
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$PAGE->set_title($strloggedinas);
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$PAGE->set_heading($course->fullname);
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$PAGE->navbar->add($strloggedinas);
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if ($course->id != SITEID) {
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$returnurl = course_get_url($course);
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} else {
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$returnurl = new moodle_url('/', ['redirect' => 1]);
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}
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notice($strloggedinas, $returnurl);
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