// Include the common auth system files (including the OAuth2 Server object).
require_once(__DIR__.'/authsystem.inc.php');
+$errors = array();
+
// Start HTML document as a DOM object.
extract(ExtendedDocument::initHTML5()); // sets $document, $html, $head, $title, $body
$document->formatOutput = true; // we want a nice output
$style = $head->appendElement('link');
$style->setAttribute('rel', 'stylesheet');
$style->setAttribute('href', 'authsystem.css');
-
+$head->appendJSFile('authsystem.js');
$title->appendText('KaiRo.at Authentication Server');
$h1 = $body->appendElement('h1', 'KaiRo.at Authentication Server');
-$logged_in = false;
-$user_id = 0;
-$user_email = '';
-
-if ($logged_in) {
- $div = $body->appendElement('div', $user_email);
- $div->setAttribute('class', 'loginheader');
- $div = $body->appendElement('div');
- $div->setAttribute('class', 'loginlinks');
- $link = $div->appendLink('?logout', _('Log out'));
- $link->setAttribute('title', _('Log out user of the system'));
+$running_on_localhost = preg_match('/^((.+\.)?localhost|127\.0\.0\.\d+)$/', $_SERVER['SERVER_NAME']);
+if (($_SERVER['SERVER_PORT'] != 443) && !$running_on_localhost) {
+ $errors[] = _('You are not accessing this site on a secure connection, so authentication doesn\'t work.');
+}
+
+$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 = null;
+ $user = array('id' => 0, 'email' => '');
+ $pagetype = 'default';
+ $db->exec("SET time_zone='+00:00';"); // Execute directly on PDO object, set session to UTC to make our gmdate() values match correctly.
+ if (strlen(@$_COOKIE['sessionkey'])) {
+ // Fetch the session - or at least try to.
+ $result = $db->prepare('SELECT * FROM `auth_sessions` WHERE `sesskey` = :sesskey AND `time_expire` > :expire;');
+ $result->execute(array(':sesskey' => $_COOKIE['sessionkey'], ':expire' => gmdate('Y-m-d H:i:s')));
+ $row = $result->fetch(PDO::FETCH_ASSOC);
+ if ($row) {
+ $session = $row;
+
+ if (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']))) {
+ // XXXlog: Unexpected logout failure!
+ $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.');
+ }
+ else {
+ $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') && password_verify(@$_POST['pwd'], $user['pwdhash'])) {
+ // Check if a newer hashing algorithm is available
+ // or the cost has changed
+ if (password_needs_rehash($user['pwdhash'], PASSWORD_DEFAULT, $pwd_options)) {
+ // If so, create a new hash, and replace the old one
+ $newHash = password_hash($_POST['pwd'], PASSWORD_DEFAULT, $pwd_options);
+ $result = $db->prepare('UPDATE `auth_users` SET `pwdhash` = :pwdhash WHERE `id` = :userid;');
+ if (!$result->execute(array(':pwdhash' => $newHash, ':userid' => $user['id']))) {
+ // XXXlog: Failed to update user hash!
+ }
+ }
+
+ // Log user in - update session key for that, see https://wiki.mozilla.org/WebAppSec/Secure_Coding_Guidelines#Login
+ $sesskey = bin2hex(openssl_random_pseudo_bytes(512/8)); // Get 512 bits of randomness (128 byte hex string).
+ setcookie('sessionkey', $sesskey, 0, "", "", !$running_on_localhost, true); // Last two params are secure and httponly, secure is not set on localhost.
+ // 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 {
+ // XXXlog: unexpected failure to create 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.');
+ }
+ }
+ 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']))) {
+ // XXXlog: Unexpected login failure!
+ $errors[] = _('Login failed unexpectedly. Please <a href="https://www.kairo.at/contact">contact KaiRo.at</a> and tell the team about this.');
+ }
+ }
+ }
+ 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)) {
+ $errors += checkPasswordConstraints(strval($_POST['pwd']), $_POST['email']);
+ }
+ if (!count($errors)) {
+ // Put user into the DB
+ if (!$user['id']) {
+ $newHash = password_hash($_POST['pwd'], PASSWORD_DEFAULT, $pwd_options);
+ $vcode = bin2hex(openssl_random_pseudo_bytes(512/8)); // Get 512 bits of randomness (128 byte hex string).
+ $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))) {
+ // XXXlog: User insertion failure!
+ $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' => $vcode);
+ }
+ if ($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");
+ $mail->addMailText(($running_on_localhost?'http':'https').'://'.$_SERVER['SERVER_NAME'].strstr($_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 {
+ $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 {
+ // Send email with instructions for resetting the password.
+ }
+ }
+ }
+ }
+ }
+ 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']) {
+ // XXXlog: unexpected failure to fetch user data!
+ }
+ $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']))) {
+ // XXXlog: unexpected failure to save verification!
+ $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 {
+ $errors[] = _('The confirmation link you called is not valid. Possibly it has expired and you need to try registering again.');
+ }
+ }
+ elseif (intval($session['user'])) {
+ $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']) {
+ // XXXlog: unexpected failure to fetch user data!
+ }
+ // Password reset requested.
+ if (array_key_exists('pwd', $_POST) && array_key_exists('reset', $_POST) && array_key_exists('tcode', $_POST)) {
+ $errors += checkPasswordConstraints(strval($_POST['pwd']), $user['email']);
+ if (!count($errors)) {
+ $newHash = password_hash($_POST['pwd'], PASSWORD_DEFAULT, $pwd_options);
+ $result = $db->prepare('UPDATE `auth_users` SET `pwdhash` = :pwdhash WHERE `id` = :userid;');
+ if (!$result->execute(array(':pwdhash' => $newHash, ':userid' => $session['user']))) {
+ // XXXlog: Password reset failure!
+ $errors[] = _('Password reset failed. Please <a href="https://www.kairo.at/contact">contact KaiRo.at</a> and tell the team about this.');
+ }
+ else {
+ $pagetype = 'pwd_reset_done';
+ }
+ }
+ }
+ }
+ }
+ }
+ if (is_null($session)) {
+ // Create new session and set cookie.
+ $sesskey = bin2hex(openssl_random_pseudo_bytes(512/8)); // Get 512 bits of randomness (128 byte hex string).
+ setcookie('sessionkey', $sesskey, 0, "", "", !$running_on_localhost, true); // Last two params are secure and httponly, secure is not set on localhost.
+ $result = $db->prepare('INSERT INTO `auth_sessions` (`sesskey`, `time_expire`) VALUES (:sesskey, :expire);');
+ $result->execute(array(':sesskey' => $sesskey, ':expire' => gmdate('Y-m-d H:i:s', strtotime('+5 minutes'))));
+ // 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 {
+ // XXXlog: unexpected failure to create session!
+ $errors[] = _('The session system is not working. Please <a href="https://www.kairo.at/contact">contact KaiRo.at</a> and tell the team about this.');
+ }
+ }
+}
+
+if (!count($errors)) {
+ if ($pagetype == 'verification_sent') {
+ $para = $body->appendElement('p', sprintf(_('An email for confirmation has been sent to %s. Please follow the link provided there to complete the process.'), $user['email']));
+ $para->setAttribute('class', 'verifyinfo pending');
+ }
+ elseif ($pagetype == 'resetstart') {
+ $para = $body->appendElement('p', _('If you forgot your password or didn\'t receive the registration confirmation, please enter your email here.'));
+ $para->setAttribute('class', '');
+ $form = $body->appendForm('?reset', 'POST', 'resetform');
+ $form->setAttribute('id', 'loginform');
+ $form->setAttribute('class', 'loginarea hidden');
+ $ulist = $form->appendElement('ul');
+ $ulist->setAttribute('class', 'flat login');
+ $litem = $ulist->appendElement('li');
+ $inptxt = $litem->appendInputEmail('email', 30, 20, 'login_email');
+ $inptxt->setAttribute('autocomplete', 'email');
+ $inptxt->setAttribute('required', '');
+ $inptxt->setAttribute('placeholder', _('Email'));
+ $litem = $ulist->appendElement('li');
+ $litem->appendInputHidden('tcode', createTimeCode($session));
+ $submit = $litem->appendInputSubmit(_('Send instructions to email'));
+ }
+ elseif ($pagetype == 'resetpwd') {
+ $para = $body->appendElement('p', _('You can set a new password here.'));
+ $para->setAttribute('class', '');
+ $form = $body->appendForm('?', 'POST', 'newpwdform');
+ $form->setAttribute('id', 'loginform');
+ $form->setAttribute('class', 'loginarea hidden');
+ $ulist = $form->appendElement('ul');
+ $ulist->setAttribute('class', 'flat login');
+ $litem = $ulist->appendElement('li');
+ $litem->setAttribute('class', 'donotshow');
+ $inptxt = $litem->appendInputEmail('email_hidden', 30, 20, 'login_email', $user['email']);
+ $inptxt->setAttribute('autocomplete', 'email');
+ $inptxt->setAttribute('placeholder', _('Email'));
+ $litem = $ulist->appendElement('li');
+ $inptxt = $litem->appendInputPassword('pwd', 20, 20, 'login_pwd', '');
+ $inptxt->setAttribute('required', '');
+ $inptxt->setAttribute('placeholder', _('Password'));
+ $inptxt->setAttribute('class', 'login');
+ $litem = $ulist->appendElement('li');
+ $litem->appendInputHidden('reset', '');
+ $litem->appendInputHidden('tcode', createTimeCode($session));
+ $submit = $litem->appendInputSubmit(_('Save password'));
+ }
+ elseif ($session['logged_in']) {
+ if ($pagetype == 'reset_done') {
+ $para = $body->appendElement('p', _('Your password has successfully been reset.'));
+ $para->setAttribute('class', 'resetinfo done');
+ }
+ $div = $body->appendElement('div', $user['email']);
+ $div->setAttribute('class', 'loginheader');
+ $div = $body->appendElement('div');
+ $div->setAttribute('class', 'loginlinks');
+ $ulist = $div->appendElement('ul');
+ $ulist->setAttribute('class', 'flat');
+ $litem = $ulist->appendElement('li');
+ $link = $litem->appendLink('?logout', _('Log out'));
+ $litem = $ulist->appendElement('li');
+ $litem->appendLink('?reset', _('Set new password'));
+ }
+ else { // not logged in
+ if ($pagetype == 'verification_done') {
+ $para = $body->appendElement('p', _('Hooray! Your email was successfully confirmed! You can log in now.'));
+ $para->setAttribute('class', 'verifyinfo done');
+ }
+ elseif ($pagetype == 'reset_done') {
+ $para = $body->appendElement('p', _('Your password has successfully been reset. You can log in now with the new password.'));
+ $para->setAttribute('class', 'resetinfo done');
+ }
+ $form = $body->appendForm('?', 'POST', 'loginform');
+ $form->setAttribute('id', 'loginform');
+ $form->setAttribute('class', 'loginarea hidden');
+ $ulist = $form->appendElement('ul');
+ $ulist->setAttribute('class', 'flat login');
+ $litem = $ulist->appendElement('li');
+ $inptxt = $litem->appendInputEmail('email', 30, 20, 'login_email', (intval($user['id'])?$user['email']:''));
+ $inptxt->setAttribute('autocomplete', 'email');
+ $inptxt->setAttribute('required', '');
+ $inptxt->setAttribute('placeholder', _('Email'));
+ $inptxt->setAttribute('class', 'login');
+ $litem = $ulist->appendElement('li');
+ $inptxt = $litem->appendInputPassword('pwd', 20, 20, 'login_pwd', '');
+ $inptxt->setAttribute('required', '');
+ $inptxt->setAttribute('placeholder', _('Password'));
+ $inptxt->setAttribute('class', 'login');
+ $litem = $ulist->appendElement('li');
+ $litem->appendLink('?reset', _('Forgot password?'));
+ $litem = $ulist->appendElement('li');
+ $cbox = $litem->appendInputCheckbox('remember', 'login_remember', 'true', false);
+ $cbox->setAttribute('class', 'logincheck');
+ $label = $litem->appendLabel('login_remember', _('Remember me'));
+ $label->setAttribute('id', 'rememprompt');
+ $label->setAttribute('class', 'loginprompt');
+ $litem = $ulist->appendElement('li');
+ $litem->appendInputHidden('tcode', createTimeCode($session));
+ $submit = $litem->appendInputSubmit(_('Log in / Register'));
+ $submit->setAttribute('class', 'loginbutton');
+ }
}
-else { // not logged in
- $form = $body->appendForm('#', 'POST', 'loginform');
- $form->setAttribute('class', 'loginarea');
- $label = $form->appendLabel('login_email', _('Email').':');
- $label->setAttribute('id', 'emailprompt');
- $label->setAttribute('class', 'loginprompt');
- $inptxt = $form->appendInputText('form[email]', 30, 20, 'login_email', (intval($user_id)?$user_email:''));
- $inptxt->setAttribute('class', 'login');
- $form->appendElement('br');
- $label = $form->appendLabel('login_pwd', _('Password').':');
- $label->setAttribute('id', 'pwdprompt');
- $label->setAttribute('class', 'loginprompt');
- $inptxt = $form->appendInputPassword('form[pwd]', 20, 20, 'login_pwd', '');
- $inptxt->setAttribute('class', 'login');
- $form->appendElement('br');
- $cbox = $form->appendInputCheckbox('form[remember]', 'login_remember', 'true', false);
- $cbox->setAttribute('class', 'logincheck');
- $label = $form->appendLabel('login_remember', _('Remember me'));
- $label->setAttribute('id', 'rememprompt');
- $label->setAttribute('class', 'loginprompt');
- $form->appendElement('br');
- $submit = $form->appendInputSubmit(_('Log in'));
- $submit->setAttribute('class', 'loginbutton');
+
+if (count($errors)) {
+ $body->appendElement('p', ((count($errors) <= 1)
+ ?_('The following error was detected')
+ :_('The following errors were detected')).':');
+ $list = $body->appendElement('ul');
+ $list->setAttribute('class', 'flat warn');
+ foreach ($errors as $msg) {
+ $item = $list->appendElement('li', $msg);
+ }
+ $body->appendButton(_('Back'), 'history.back();');
}
// Send HTML to client.
print($document->saveHTML());
+
+// ********** helper functions **********
+
+function checkPasswordConstraints($new_password, $user_email) {
+ $errors = array();
+ if ($new_password != trim($new_password)) {
+ $errors[] = _('Password must not start or end with a whitespace character like a space.');
+ }
+ if (strlen($new_password) < 8) { $errors[] = sprintf(_('Password too short (min. %s characters).'), 8); }
+ if (strlen($new_password) > 70) { $errors[] = sprintf(_('Password too long (max. %s characters).'), 70); }
+ if ((strtolower($new_password) == strtolower($user_email)) ||
+ in_array(strtolower($new_password), preg_split("/[@\.]+/", strtolower($user_email)))) {
+ $errors[] = _('The passwort can not be equal to your email or any part of it.');
+ }
+ if ((strlen($new_password) < 15) && (preg_match('/^[a-zA-Z]+$/', $new_password))) {
+ $errors[] = sprintf(_('Your password must use characters other than normal letters or contain least %s characters.'), 15);
+ }
+ if (preg_match('/^\d+$/', $new_password)) {
+ $errors[] = sprintf(_('Your password cannot consist only of numbers.'), 15);
+ }
+ if (strlen(count_chars($new_password, 3)) < 5) {
+ $errors[] = sprintf(_('Password does have to contain at least %s different characters.'), 5);
+ }
+ return $errors;
+}
+
+function createTimeCode($session) {
+ // Matches TOTP algorithms, see https://en.wikipedia.org/wiki/Time-based_One-time_Password_Algorithm
+ $valid_seconds = 600; $code_digits = 8;
+ $time = time();
+ $rest = $time % $valid_seconds; // T0, will be sent as part of code to make it valid for the full duration.
+ $counter = floor(($time - $rest) / $valid_seconds);
+ $hmac = mhash(MHASH_SHA1, $counter, $session['sesskey']);
+ $offset = hexdec(substr(bin2hex(substr($hmac, -1)), -1)); // Get the last 4 bits as a number.
+ $totp = hexdec(bin2hex(substr($hmac, $offset, 4))) & 0x7FFFFFFF; // Take 4 bytes at the offset, discard highest bit.
+ $totp_value = sprintf('%0'.$code_digits.'d', substr($totp, -$code_digits));
+ return $rest.'.'.$totp_value;
+}
+
?>
projects / authserver.git / blobdiff