+$errors = $utils->checkForSecureConnection();
+
+$para = $body->appendElement('p', _('This login system does not work without JavaScript. Please activate JavaScript for this site to log in.'));
+$para->setAttribute('id', 'jswarning');
+$para->setAttribute('class', 'warn');
+
+if (!count($errors)) {
+ $session = $utils->initSession(); // Read session or create new session and set cookie.
+ $user = array('id' => 0, 'email' => '');
+ $pagetype = 'default';
+ if (is_null($session)) {
+ $errors[] = _('The session system is not working. Please <a href="https://www.kairo.at/contact">contact KaiRo.at</a> and tell the team about this.');
+ }
+ elseif (array_key_exists('logout', $_GET)) {
+ $result = $db->prepare('UPDATE `auth_sessions` SET `logged_in` = FALSE WHERE `id` = :sessid;');
+ if (!$result->execute(array(':sessid' => $session['id']))) {
+ $utils->log('logout_failure', 'session: '.$session['id']);
+ $errors[] = _('The email address is invalid.');
+ }
+ $session['logged_in'] = 0;
+ }
+ elseif (array_key_exists('email', $_POST)) {
+ if (!preg_match('/^[^@]+@[^@]+\.[^@]+$/', $_POST['email'])) {
+ $errors[] = _('The email address is invalid.');
+ }
+ elseif ($utils->verifyTimeCode(@$_POST['tcode'], $session)) {
+ $result = $db->prepare('SELECT `id`, `pwdhash`, `email`, `status`, `verify_hash` FROM `auth_users` WHERE `email` = :email;');
+ $result->execute(array(':email' => $_POST['email']));
+ $user = $result->fetch(PDO::FETCH_ASSOC);
+ if ($user['id'] && array_key_exists('pwd', $_POST)) {
+ // existing user, check password
+ if (($user['status'] == 'ok') && $utils->pwdVerify(@$_POST['pwd'], $user)) {
+ // Check if a newer hashing algorithm is available
+ // or the cost has changed
+ if ($utils->pwdNeedsRehash($user)) {
+ // If so, create a new hash, and replace the old one
+ $newHash = $utils->pwdHash($_POST['pwd']);
+ $result = $db->prepare('UPDATE `auth_users` SET `pwdhash` = :pwdhash WHERE `id` = :userid;');
+ if (!$result->execute(array(':pwdhash' => $newHash, ':userid' => $user['id']))) {
+ $utils->log('user_hash_save_failure', 'user: '.$user['id']);
+ }
+ else {
+ $utils->log('pwd_rehash_success', 'user: '.$user['id']);
+ }
+ }
+
+ // Log user in - update session key for that, see https://wiki.mozilla.org/WebAppSec/Secure_Coding_Guidelines#Login
+ $utils->log('login', 'user: '.$user['id']);
+ $sesskey = $utils->createSessionKey();
+ setcookie('sessionkey', $sesskey, 0, "", "", !$utils->running_on_localhost, true); // Last two params are secure and httponly, secure is not set on localhost.
+ // If the session has a redirect set, make sure it's performed.
+ if (strlen(@$session['saved_redirect'])) {
+ header('Location: '.$utils->getDomainBaseURL().$session['saved_redirect']);
+ // Remove redirect.
+ $result = $db->prepare('UPDATE `auth_sessions` SET `saved_redirect` = :redir WHERE `id` = :sessid;');
+ if (!$result->execute(array(':redir' => '', ':sessid' => $session['id']))) {
+ $utils->log('redir_save_failure', 'session: '.$session['id'].', redirect: (empty)');
+ }
+ }
+ // If the session has a user set, create a new one - otherwise take existing session entry.
+ if (intval($session['user'])) {
+ $result = $db->prepare('INSERT INTO `auth_sessions` (`sesskey`, `time_expire`, `user`, `logged_in`) VALUES (:sesskey, :expire, :userid, TRUE);');
+ $result->execute(array(':sesskey' => $sesskey, ':userid' => $user['id'], ':expire' => gmdate('Y-m-d H:i:s', strtotime('+1 day'))));
+ // After insert, actually fetch the session row from the DB so we have all values.
+ $result = $db->prepare('SELECT * FROM auth_sessions WHERE `sesskey` = :sesskey AND `time_expire` > :expire;');
+ $result->execute(array(':sesskey' => $sesskey, ':expire' => gmdate('Y-m-d H:i:s')));
+ $row = $result->fetch(PDO::FETCH_ASSOC);
+ if ($row) {
+ $session = $row;
+ }
+ else {
+ $utils->log('create_session_failure', 'at login, prev session: '.$session['id'].', new user: '.$user['id']);
+ $errors[] = _('The session system is not working. Please <a href="https://www.kairo.at/contact">contact KaiRo.at</a> and tell the team about this.');
+ }
+ }
+ else {
+ $result = $db->prepare('UPDATE `auth_sessions` SET `sesskey` = :sesskey, `user` = :userid, `logged_in` = TRUE, `time_expire` = :expire WHERE `id` = :sessid;');
+ if (!$result->execute(array(':sesskey' => $sesskey, ':userid' => $user['id'], ':expire' => gmdate('Y-m-d H:i:s', strtotime('+1 day')), ':sessid' => $session['id']))) {
+ $utils->log('login_failure', 'session: '.$session['id'].', user: '.$user['id']);
+ $errors[] = _('Login failed unexpectedly. Please <a href="https://www.kairo.at/contact">contact KaiRo.at</a> and tell the team about this.');
+ }
+ else {
+ // After update, actually fetch the session row from the DB so we have all values.
+ $result = $db->prepare('SELECT * FROM auth_sessions WHERE `sesskey` = :sesskey AND `time_expire` > :expire;');
+ $result->execute(array(':sesskey' => $sesskey, ':expire' => gmdate('Y-m-d H:i:s')));
+ $row = $result->fetch(PDO::FETCH_ASSOC);
+ if ($row) {
+ $session = $row;
+ }
+ }
+ }
+ // If a verify_hash if set on a verified user, a password reset had been requested. As a login works right now, cancel that reset request by deleting the hash.
+ if (strlen(@$user['verify_hash'])) {
+ $result = $db->prepare('UPDATE `auth_users` SET `verify_hash` = \'\' WHERE `id` = :userid;');
+ if (!$result->execute(array(':userid' => $user['id']))) {
+ $utils->log('empty_vhash_failure', 'user: '.$user['id']);
+ }
+ else {
+ $user['verify_hash'] = '';
+ }
+ }
+ }
+ else {
+ $errors[] = _('This password is invalid or your email is not verified yet. Did you type them correctly?');
+ }
+ }
+ else {
+ // new user: check password, create user and send verification; existing users: re-send verification or send password change instructions
+ if (array_key_exists('pwd', $_POST)) {
+ $errors += $utils->checkPasswordConstraints(strval($_POST['pwd']), $_POST['email']);
+ }
+ if (!count($errors)) {
+ // Put user into the DB
+ if (!$user['id']) {
+ $newHash = $utils->pwdHash($_POST['pwd']);
+ $vcode = $utils->createVerificationCode();
+ $result = $db->prepare('INSERT INTO `auth_users` (`email`, `pwdhash`, `status`, `verify_hash`) VALUES (:email, :pwdhash, \'unverified\', :vcode);');
+ if (!$result->execute(array(':email' => $_POST['email'], ':pwdhash' => $newHash, ':vcode' => $vcode))) {
+ $utils->log('user_insert_failure', 'email: '.$_POST['email']);
+ $errors[] = _('Could not add user. Please <a href="https://www.kairo.at/contact">contact KaiRo.at</a> and tell the team about this.');
+ }
+ $user = array('id' => $db->lastInsertId(),
+ 'email' => $_POST['email'],
+ 'pwdhash' => $newHash,
+ 'status' => 'unverified',
+ 'verify_hash' => $vcode);
+ $utils->log('new_user', 'user: '.$user['id'].', email: '.$user['email']);
+ }
+ if ($user['status'] == 'unverified') {
+ // Send email for verification and show message to point to it.
+ $mail = new email();
+ $mail->setCharset('utf-8');
+ $mail->addHeader('X-KAIRO-AUTH', 'email_verification');
+ $mail->addRecipient($user['email']);
+ $mail->setSender('noreply@auth.kairo.at', _('KaiRo.at Authentication Service'));
+ $mail->setSubject('Email Verification for KaiRo.at Authentication');
+ $mail->addMailText(_('Welcome!')."\n\n");
+ $mail->addMailText(sprintf(_('This email address, %s, has been used for registration on "%s".'),
+ $user['email'], _('KaiRo.at Authentication Service'))."\n\n");
+ $mail->addMailText(_('Please confirm that registration by clicking the following link (or calling it up in your browser):')."\n");
+ $mail->addMailText($utils->getDomainBaseURL().strstr($_SERVER['REQUEST_URI'], '?', true)
+ .'?email='.rawurlencode($user['email']).'&verification_code='.rawurlencode($user['verify_hash'])."\n\n");
+ $mail->addMailText(_('With this confirmation, you accept that we handle your data for the purpose of logging you into other websites when you request that.')."\n");
+ $mail->addMailText(_('Those websites will get to know your email address but not your password, which we store securely.')."\n");
+ $mail->addMailText(_('If you do not call this confirmation link within 72 hours, your data will be deleted from our database.')."\n\n");
+ $mail->addMailText(sprintf(_('The %s team'), 'KaiRo.at'));
+ //$mail->setDebugAddress("robert@localhost");
+ $mailsent = $mail->send();
+ if ($mailsent) {
+ $pagetype = 'verification_sent';
+ }
+ else {
+ $utils->log('verify_mail_failure', 'user: '.$user['id'].', email: '.$user['email']);
+ $errors[] = _('The confirmation email could not be sent to you. Please <a href="https://www.kairo.at/contact">contact KaiRo.at</a> and tell the team about this.');
+ }
+ }
+ else {
+ // Password reset requested with "Password forgotten?" function.
+ $vcode = $utils->createVerificationCode();
+ $result = $db->prepare('UPDATE `auth_users` SET `verify_hash` = :vcode WHERE `id` = :userid;');
+ if (!$result->execute(array(':vcode' => $vcode, ':userid' => $user['id']))) {
+ $utils->log('vhash_set_failure', 'user: '.$user['id']);
+ $errors[] = _('Could not initiate reset request. Please <a href="https://www.kairo.at/contact">contact KaiRo.at</a> and tell the team about this.');
+ }
+ else {
+ $utils->log('pwd_reset_request', 'user: '.$user['id'].', email: '.$user['email']);
+ $resetcode = $vcode.dechex($user['id'] + $session['id']).'_'.$utils->createTimeCode($session, null, 60);
+ // Send email with instructions for resetting the password.
+ $mail = new email();
+ $mail->setCharset('utf-8');
+ $mail->addHeader('X-KAIRO-AUTH', 'password_reset');
+ $mail->addRecipient($user['email']);
+ $mail->setSender('noreply@auth.kairo.at', _('KaiRo.at Authentication Service'));
+ $mail->setSubject('How to reset your password for KaiRo.at Authentication');
+ $mail->addMailText(_('Hi,')."\n\n");
+ $mail->addMailText(sprintf(_('A request for setting a new password for this email address, %s, has been submitted on "%s".'),
+ $user['email'], _('KaiRo.at Authentication Service'))."\n\n");
+ $mail->addMailText(_('You can set a new password by clicking the following link (or calling it up in your browser):')."\n");
+ $mail->addMailText($utils->getDomainBaseURL().strstr($_SERVER['REQUEST_URI'], '?', true)
+ .'?email='.rawurlencode($user['email']).'&reset_code='.rawurlencode($resetcode)."\n\n");
+ $mail->addMailText(_('If you do not call this confirmation link within 1 hour, this link expires and the existing password is being kept in place.')."\n\n");
+ $mail->addMailText(sprintf(_('The %s team'), 'KaiRo.at'));
+ //$mail->setDebugAddress("robert@localhost");
+ $mailsent = $mail->send();
+ if ($mailsent) {
+ $pagetype = 'resetmail_sent';
+ }
+ else {
+ $utils->log('pwd_reset_mail_failure', 'user: '.$user['id'].', email: '.$user['email']);
+ $errors[] = _('The email with password reset instructions could not be sent to you. Please <a href="https://www.kairo.at/contact">contact KaiRo.at</a> and tell the team about this.');
+ }
+ }
+ }
+ }
+ }
+ }
+ else {
+ $errors[] = _('The form you used was not valid. Possibly it has expired and you need to initiate the action again.');
+ }
+ }
+ elseif (array_key_exists('reset', $_GET)) {
+ if ($session['logged_in']) {
+ $result = $db->prepare('SELECT `id`,`email` FROM `auth_users` WHERE `id` = :userid;');
+ $result->execute(array(':userid' => $session['user']));
+ $user = $result->fetch(PDO::FETCH_ASSOC);
+ if (!$user['id']) {
+ $utils->log('reset_user_read_failure', 'user: '.$session['user']);
+ }
+ $pagetype = 'resetpwd';
+ }
+ else {
+ // Display form for entering email.
+ $pagetype = 'resetstart';
+ }
+ }
+ elseif (array_key_exists('verification_code', $_GET)) {
+ $result = $db->prepare('SELECT `id`,`email` FROM `auth_users` WHERE `email` = :email AND `status` = \'unverified\' AND `verify_hash` = :vcode;');
+ $result->execute(array(':email' => @$_GET['email'], ':vcode' => $_GET['verification_code']));
+ $user = $result->fetch(PDO::FETCH_ASSOC);
+ if ($user['id']) {
+ $result = $db->prepare('UPDATE `auth_users` SET `verify_hash` = \'\', `status` = \'ok\' WHERE `id` = :userid;');
+ if (!$result->execute(array(':userid' => $user['id']))) {
+ $utils->log('verification_save_failure', 'user: '.$user['id']);
+ $errors[] = _('Could not save confirmation. Please <a href="https://www.kairo.at/contact">contact KaiRo.at</a> and tell the team about this.');
+ }
+ $pagetype = 'verification_done';
+ }
+ else {
+ $errors[] = _('The confirmation link you called is not valid. Possibly it has expired and you need to try registering again.');
+ }
+ }
+ elseif (array_key_exists('reset_code', $_GET)) {
+ $reset_fail = true;
+ $result = $db->prepare('SELECT `id`,`email`,`verify_hash` FROM `auth_users` WHERE `email` = :email');
+ $result->execute(array(':email' => @$_GET['email']));
+ $user = $result->fetch(PDO::FETCH_ASSOC);
+ if ($user['id']) {
+ // Deconstruct reset code and verify it.
+ if (preg_match('/^([0-9a-f]{'.strlen($user['verify_hash']).'})([0-9a-f]+)_(\d+\.\d+)$/', $_GET['reset_code'], $regs)) {
+ $tcode_sessid = hexdec($regs[2]) - $user['id'];
+ $result = $db->prepare('SELECT `id`,`sesskey` FROM `auth_sessions` WHERE `id` = :sessid;');
+ $result->execute(array(':sessid' => $tcode_sessid));
+ $row = $result->fetch(PDO::FETCH_ASSOC);
+ if ($row) {
+ $tcode_session = $row;
+ if (($regs[1] == $user['verify_hash']) &&
+ $utils->verifyTimeCode($regs[3], $session, 60)) {
+ // Set a new verify_hash for the actual password reset.
+ $user['verify_hash'] = $utils->createVerificationCode();
+ $result = $db->prepare('UPDATE `auth_users` SET `verify_hash` = :vcode WHERE `id` = :userid;');
+ if (!$result->execute(array(':vcode' => $user['verify_hash'], ':userid' => $user['id']))) {
+ $utils->log('vhash_reset_failure', 'user: '.$user['id']);
+ }
+ $result = $db->prepare('UPDATE `auth_sessions` SET `user` = :userid WHERE `id` = :sessid;');
+ if (!$result->execute(array(':userid' => $user['id'], ':sessid' => $session['id']))) {
+ $utils->log('reset_session_set_user_failure', 'session: '.$session['id']);
+ }
+ $pagetype = 'resetpwd';
+ $reset_fail = false;
+ }
+ }
+ }
+ }
+ if ($reset_fail) {
+ $errors[] = _('The password reset link you called is not valid. Possibly it has expired and you need to call the "Password forgotten?" function again.');
+ }
+ }
+ elseif (array_key_exists('clients', $_GET)) {
+ $result = $db->prepare('SELECT `id`,`email` FROM `auth_users` WHERE `id` = :userid;');
+ $result->execute(array(':userid' => $session['user']));
+ $user = $result->fetch(PDO::FETCH_ASSOC);
+ if ($session['logged_in'] && $user['id']) {
+ if (array_key_exists('client_id', $_POST) && (strlen($_POST['client_id']) >= 5)) {
+ $clientid = $_POST['client_id'];
+ $clientsecret = $utils->createClientSecret();
+ $rediruri = strval(@$_POST['redirect_uri']);
+ $scope = strval(@$_POST['scope']);
+ $result = $db->prepare('INSERT INTO `oauth_clients` (`client_id`, `client_secret`, `redirect_uri`, `scope`, `user_id`) VALUES (:clientid, :secret, :rediruri, :scope, :userid);');
+ if (!$result->execute(array(':clientid' => $clientid,
+ ':secret' => $clientsecret,
+ ':rediruri' => $rediruri,
+ ':scope' => $scope,
+ ':userid' => $user['id']))) {
+ $utils->log('client_save_failure', 'client: '.$clientid);
+ $errors[] = 'Unexpectedly failed to save new client information. Please <a href="https://www.kairo.at/contact">contact KaiRo.at</a> and tell the team about this.';
+ }
+ }
+ if (!count($errors)) {
+ // List clients
+ $result = $db->prepare('SELECT `client_id`,`client_secret`,`redirect_uri`,`scope` FROM `oauth_clients` WHERE `user_id` = :userid;');
+ $result->execute(array(':userid' => $user['id']));
+ $clients = $result->fetchAll(PDO::FETCH_ASSOC);
+ if (!$clients) { $clients = array(); }
+ $pagetype = 'clientlist';
+ }
+ }
+ else {
+ $errors[] = _('This function is only available if you are logged in.');
+ }
+ }
+ elseif (intval($session['user'])) {
+ $result = $db->prepare('SELECT `id`,`email`,`verify_hash` FROM `auth_users` WHERE `id` = :userid;');
+ $result->execute(array(':userid' => $session['user']));
+ $user = $result->fetch(PDO::FETCH_ASSOC);
+ if (!$user['id']) {
+ $utils->log('user_read_failure', 'user: '.$session['user']);
+ }
+ // Password reset requested.
+ if (array_key_exists('pwd', $_POST) && array_key_exists('reset', $_POST) && array_key_exists('tcode', $_POST)) {
+ // If not logged in, a password reset needs to have the proper vcode set.
+ if (!$session['logged_in'] && (!strlen(@$_POST['vcode']) || ($_POST['vcode'] != $user['verify_hash']))) {
+ $errors[] = _('Password reset failed. The reset form you used was not valid. Possibly it has expired and you need to initiate the password reset again.');
+ }
+ // If not logged in, a password reset also needs to have the proper email set.
+ if (!$session['logged_in'] && !count($errors) && (@$_POST['email_hidden'] != $user['email'])) {
+ $errors[] = _('Password reset failed. The reset form you used was not valid. Possibly it has expired and you need to initiate the password reset again.');
+ }
+ // Check validity of time code.
+ if (!count($errors) && !$utils->verifyTimeCode($_POST['tcode'], $session)) {
+ $errors[] = _('Password reset failed. The reset form you used was not valid. Possibly it has expired and you need to initiate the password reset again.');
+ }
+ $errors += $utils->checkPasswordConstraints(strval($_POST['pwd']), $user['email']);
+ if (!count($errors)) {
+ $newHash = $utils->pwdHash($_POST['pwd']);
+ $result = $db->prepare('UPDATE `auth_users` SET `pwdhash` = :pwdhash, `verify_hash` = \'\' WHERE `id` = :userid;');
+ if (!$result->execute(array(':pwdhash' => $newHash, ':userid' => $session['user']))) {
+ $utils->log('pwd_reset_failure', 'user: '.$session['user']);
+ $errors[] = _('Password reset failed. Please <a href="https://www.kairo.at/contact">contact KaiRo.at</a> and tell the team about this.');
+ }
+ else {
+ $pagetype = 'reset_done';
+ }
+ }
+ }
+ }