2 // This file is part of Moodle - http://moodle.org/
4 // Moodle is free software: you can redistribute it and/or modify
5 // it under the terms of the GNU General Public License as published by
6 // the Free Software Foundation, either version 3 of the License, or
7 // (at your option) any later version.
9 // Moodle is distributed in the hope that it will be useful,
10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 // GNU General Public License for more details.
14 // You should have received a copy of the GNU General Public License
15 // along with Moodle. If not, see <http://www.gnu.org/licenses/>.
18 * Class for loading/storing oauth2 linked logins from the DB.
20 * @package auth_oauth2
21 * @copyright 2017 Damyon Wiese
22 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
24 namespace auth_oauth2;
31 defined('MOODLE_INTERNAL') || die();
34 * Static list of api methods for auth oauth2 configuration.
36 * @package auth_oauth2
37 * @copyright 2017 Damyon Wiese
38 * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
43 * Remove all linked logins that are using issuers that have been deleted.
45 * @param int $issuerid The issuer id of the issuer to check, or false to check all (defaults to all)
48 public static function clean_orphaned_linked_logins($issuerid = false) {
49 return linked_login::delete_orphaned($issuerid);
55 * Requires auth/oauth2:managelinkedlogins capability at the user context.
57 * @param int $userid (defaults to $USER->id)
60 public static function get_linked_logins($userid = false) {
63 if ($userid === false) {
67 if (\core\session\manager::is_loggedinas()) {
68 throw new moodle_exception('notwhileloggedinas', 'auth_oauth2');
71 $context = context_user::instance($userid);
72 require_capability('auth/oauth2:managelinkedlogins', $context);
74 return linked_login::get_records(['userid' => $userid, 'confirmtoken' => '']);
78 * See if there is a match for this username and issuer in the linked_login table.
80 * @param string $username as returned from an oauth client.
81 * @param \core\oauth2\issuer $issuer
82 * @return stdClass User record if found.
84 public static function match_username_to_user($username, $issuer) {
86 'issuerid' => $issuer->get('id'),
87 'username' => $username
89 $result = linked_login::get_record($params);
92 $user = \core_user::get_user($result->get('userid'));
93 if (!empty($user) && !$user->deleted) {
101 * Link a login to this account.
103 * Requires auth/oauth2:managelinkedlogins capability at the user context.
105 * @param array $userinfo as returned from an oauth client.
106 * @param \core\oauth2\issuer $issuer
107 * @param int $userid (defaults to $USER->id)
108 * @param bool $skippermissions During signup we need to set this before the user is setup for capability checks.
111 public static function link_login($userinfo, $issuer, $userid = false, $skippermissions = false) {
114 if ($userid === false) {
118 if (linked_login::has_existing_issuer_match($issuer, $userinfo['username'])) {
119 throw new moodle_exception('alreadylinked', 'auth_oauth2');
122 if (\core\session\manager::is_loggedinas()) {
123 throw new moodle_exception('notwhileloggedinas', 'auth_oauth2');
126 $context = context_user::instance($userid);
127 if (!$skippermissions) {
128 require_capability('auth/oauth2:managelinkedlogins', $context);
131 $record = new stdClass();
132 $record->issuerid = $issuer->get('id');
133 $record->username = $userinfo['username'];
134 $record->userid = $userid;
135 $existing = linked_login::get_record((array)$record);
137 $existing->set('confirmtoken', '');
141 $record->email = $userinfo['email'];
142 $record->confirmtoken = '';
143 $record->confirmtokenexpires = 0;
144 $linkedlogin = new linked_login(0, $record);
145 return $linkedlogin->create();
149 * Send an email with a link to confirm linking this account.
151 * @param array $userinfo as returned from an oauth client.
152 * @param \core\oauth2\issuer $issuer
153 * @param int $userid (defaults to $USER->id)
156 public static function send_confirm_link_login_email($userinfo, $issuer, $userid) {
157 $record = new stdClass();
158 $record->issuerid = $issuer->get('id');
159 $record->username = $userinfo['username'];
160 $record->userid = $userid;
161 if (linked_login::has_existing_issuer_match($issuer, $userinfo['username'])) {
162 throw new moodle_exception('alreadylinked', 'auth_oauth2');
164 $record->email = $userinfo['email'];
165 $record->confirmtoken = random_string(32);
166 $expires = new \DateTime('NOW');
167 $expires->add(new \DateInterval('PT30M'));
168 $record->confirmtokenexpires = $expires->getTimestamp();
170 $linkedlogin = new linked_login(0, $record);
171 $linkedlogin->create();
173 // Construct the email.
175 $supportuser = \core_user::get_support_user();
176 $user = get_complete_user_data('id', $userid);
178 $data = new stdClass();
179 $data->fullname = fullname($user);
180 $data->sitename = format_string($site->fullname);
181 $data->admin = generate_email_signoff();
182 $data->issuername = format_string($issuer->get('name'));
183 $data->linkedemail = format_string($linkedlogin->get('email'));
185 $subject = get_string('confirmlinkedloginemailsubject', 'auth_oauth2', format_string($site->fullname));
188 'token' => $linkedlogin->get('confirmtoken'),
190 'username' => $userinfo['username'],
191 'issuerid' => $issuer->get('id'),
193 $confirmationurl = new moodle_url('/auth/oauth2/confirm-linkedlogin.php', $params);
195 // Remove data parameter just in case it was included in the confirmation so we can add it manually later.
196 $data->link = $confirmationurl->out();
198 $message = get_string('confirmlinkedloginemail', 'auth_oauth2', $data);
199 $messagehtml = text_to_html(get_string('confirmlinkedloginemail', 'auth_oauth2', $data), false, false, true);
201 $user->mailformat = 1; // Always send HTML version as well.
203 // Directly email rather than using the messaging system to ensure its not routed to a popup or jabber.
204 return email_to_user($user, $supportuser, $subject, $message, $messagehtml);
208 * Look for a waiting confirmation token, and if we find a match - confirm it.
211 * @param string $username
212 * @param int $issuerid
213 * @param string $token
214 * @return boolean True if we linked.
216 public static function confirm_link_login($userid, $username, $issuerid, $token) {
217 if (empty($token) || empty($userid) || empty($issuerid) || empty($username)) {
222 'username' => $username,
223 'issuerid' => $issuerid,
224 'confirmtoken' => $token,
227 $login = linked_login::get_record($params);
231 $expires = $login->get('confirmtokenexpires');
232 if (time() > $expires) {
236 $login->set('confirmtokenexpires', 0);
237 $login->set('confirmtoken', '');
243 * Send an email with a link to confirm creating this account.
245 * @param array $userinfo as returned from an oauth client.
246 * @param \core\oauth2\issuer $issuer
247 * @param int $userid (defaults to $USER->id)
250 public static function send_confirm_account_email($userinfo, $issuer) {
252 require_once($CFG->dirroot.'/user/profile/lib.php');
253 require_once($CFG->dirroot.'/user/lib.php');
255 if (linked_login::has_existing_issuer_match($issuer, $userinfo['username'])) {
256 throw new moodle_exception('alreadylinked', 'auth_oauth2');
259 $user = new stdClass();
260 $user->username = $userinfo['username'];
261 $user->email = $userinfo['email'];
262 $user->auth = 'oauth2';
263 $user->mnethostid = $CFG->mnet_localhost_id;
264 $user->lastname = isset($userinfo['lastname']) ? $userinfo['lastname'] : '';
265 $user->firstname = isset($userinfo['firstname']) ? $userinfo['firstname'] : '';
266 $user->url = isset($userinfo['url']) ? $userinfo['url'] : '';
267 $user->alternatename = isset($userinfo['alternatename']) ? $userinfo['alternatename'] : '';
268 $user->secret = random_string(15);
270 $user->password = '';
271 // This user is not confirmed.
272 $user->confirmed = 0;
274 $user->id = user_create_user($user, false, true);
276 // The linked account is pre-confirmed.
277 $record = new stdClass();
278 $record->issuerid = $issuer->get('id');
279 $record->username = $userinfo['username'];
280 $record->userid = $user->id;
281 $record->email = $userinfo['email'];
282 $record->confirmtoken = '';
283 $record->confirmtokenexpires = 0;
285 $linkedlogin = new linked_login(0, $record);
286 $linkedlogin->create();
288 // Construct the email.
290 $supportuser = \core_user::get_support_user();
291 $user = get_complete_user_data('id', $user->id);
293 $data = new stdClass();
294 $data->fullname = fullname($user);
295 $data->sitename = format_string($site->fullname);
296 $data->admin = generate_email_signoff();
298 $subject = get_string('confirmaccountemailsubject', 'auth_oauth2', format_string($site->fullname));
301 'token' => $user->secret,
302 'username' => $userinfo['username']
304 $confirmationurl = new moodle_url('/auth/oauth2/confirm-account.php', $params);
306 $data->link = $confirmationurl->out();
308 $message = get_string('confirmaccountemail', 'auth_oauth2', $data);
309 $messagehtml = text_to_html(get_string('confirmaccountemail', 'auth_oauth2', $data), false, false, true);
311 $user->mailformat = 1; // Always send HTML version as well.
313 // Directly email rather than using the messaging system to ensure its not routed to a popup or jabber.
314 email_to_user($user, $supportuser, $subject, $message, $messagehtml);
319 * Delete linked login
321 * Requires auth/oauth2:managelinkedlogins capability at the user context.
323 * @param int $linkedloginid
326 public static function delete_linked_login($linkedloginid) {
327 $login = new linked_login($linkedloginid);
328 $userid = $login->get('userid');
330 if (\core\session\manager::is_loggedinas()) {
331 throw new moodle_exception('notwhileloggedinas', 'auth_oauth2');
334 $context = context_user::instance($userid);
335 require_capability('auth/oauth2:managelinkedlogins', $context);
341 * Delete linked logins for a user.
343 * @param \core\event\user_deleted $event
346 public static function user_deleted(\core\event\user_deleted $event) {
349 $userid = $event->objectid;
351 return $DB->delete_records(linked_login::TABLE, ['userid' => $userid]);