gnu-social/actions/finishopenidlogin.php

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<?php
/*
* Laconica - a distributed open-source microblogging tool
* Copyright (C) 2008, Controlez-Vous, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
if (!defined('LACONICA')) { exit(1); }
require_once(INSTALLDIR.'/lib/openid.php');
class FinishopenidloginAction extends Action {
function handle($args) {
parent::handle($args);
if (common_logged_in()) {
common_user_error(_t('Already logged in.'));
} else if ($_SERVER['REQUEST_METHOD'] == 'POST') {
if ($this->arg('create')) {
if (!$this->boolean('license')) {
$this->show_form(_t('You can\'t register if you don\'t agree to the license.'),
$this->trimmed('newname'));
return;
}
$this->create_new_user();
} else if ($this->arg('connect')) {
$this->connect_user();
} else {
common_debug(print_r($this->args, true), __FILE__);
$this->show_form(_t('Something weird happened.'),
$this->trimmed('newname'));
}
} else {
$this->try_login();
}
}
function show_top($error=NULL) {
if ($error) {
common_element('div', array('class' => 'error'), $error);
} else {
global $config;
common_element('div', 'instructions',
_t('This is the first time you\'ve logged into ') .
$config['site']['name'] .
_t(' so we must connect your OpenID to a local account. ' .
' You can either create a new account, or connect with ' .
' your existing account, if you have one.'));
}
}
function show_form($error=NULL, $username=NULL) {
common_show_header(_t('OpenID Account Setup'), NULL, $error,
array($this, 'show_top'));
common_element_start('form', array('method' => 'post',
'id' => 'account_connect',
'action' => common_local_url('finishopenidlogin')));
common_element('h2', NULL,
'Create new account');
common_element('p', NULL,
_t('Create a new user with this nickname.'));
common_input('newname', _t('New nickname'),
($username) ? $username : '',
_t('1-64 lowercase letters or numbers, no punctuation or spaces'));
common_element_start('p');
common_element('input', array('type' => 'checkbox',
'id' => 'license',
'name' => 'license',
'value' => 'true'));
common_text(_t('My text and files are available under '));
common_element('a', array(href => common_config('license', 'url')),
common_config('license', 'title'));
common_text(_t(' except this private data: password, email address, IM address, phone number.'));
common_element_end('p');
common_submit('create', _t('Create'));
common_element('h2', NULL,
'Connect existing account');
common_element('p', NULL,
_t('If you already have an account, login with your username and password '.
'to connect it to your OpenID.'));
common_input('nickname', _t('Existing nickname'));
common_password('password', _t('Password'));
common_submit('connect', _t('Connect'));
common_element_end('form');
common_show_footer();
}
function try_login() {
$consumer = oid_consumer();
$response = $consumer->complete(common_local_url('finishopenidlogin'));
if ($response->status == Auth_OpenID_CANCEL) {
$this->message(_t('OpenID authentication cancelled.'));
return;
} else if ($response->status == Auth_OpenID_FAILURE) {
// Authentication failed; display the error message.
$this->message(_t('OpenID authentication failed: ') . $response->message);
} else if ($response->status == Auth_OpenID_SUCCESS) {
// This means the authentication succeeded; extract the
// identity URL and Simple Registration data (if it was
// returned).
$display = $response->getDisplayIdentifier();
$canonical = ($response->endpoint->canonicalID) ?
$response->endpoint->canonicalID : $response->getDisplayIdentifier();
$sreg_resp = Auth_OpenID_SRegResponse::fromSuccessResponse($response);
if ($sreg_resp) {
$sreg = $sreg_resp->contents();
}
$user = oid_get_user($canonical);
if ($user) {
oid_set_last($display);
oid_update_user($user, $sreg);
common_set_user($user->nickname);
common_real_login(true);
$this->go_home($user->nickname);
} else {
$this->save_values($display, $canonical, $sreg);
$this->show_form(NULL, $this->best_new_nickname($display, $sreg));
}
}
}
function message($msg) {
common_show_header(_t('OpenID Login'));
common_element('p', NULL, $msg);
common_show_footer();
}
function save_values($display, $canonical, $sreg) {
common_ensure_session();
$_SESSION['openid_display'] = $display;
$_SESSION['openid_canonical'] = $canonical;
$_SESSION['openid_sreg'] = $sreg;
}
function get_saved_values() {
return array($_SESSION['openid_display'],
$_SESSION['openid_canonical'],
$_SESSION['openid_sreg']);
}
function create_new_user() {
$nickname = $this->trimmed('newname');
if (!Validate::string($nickname, array('min_length' => 1,
'max_length' => 64,
'format' => VALIDATE_NUM . VALIDATE_ALPHA_LOWER))) {
$this->show_form(_t('Nickname must have only letters and numbers and no spaces.'));
return;
}
if (!User::allowed_nickname($nickname)) {
$this->show_form(_t('Nickname not allowed.'));
return;
}
if (User::staticGet('nickname', $nickname)) {
$this->show_form(_t('Nickname already in use. Try another one.'));
return;
}
list($display, $canonical, $sreg) = $this->get_saved_values();
if (!$display || !$canonical) {
common_server_error(_t('Stored OpenID not found.'));
return;
}
# Possible race condition... let's be paranoid
$other = oid_get_user($canonical);
if ($other) {
common_server_error(_t('Creating new account for OpenID that already has a user.'));
return;
}
$profile = new Profile();
$profile->nickname = $nickname;
if ($sreg['fullname'] && strlen($sreg['fullname']) <= 255) {
$profile->fullname = $sreg['fullname'];
}
if ($sreg['country']) {
if ($sreg['postcode']) {
# XXX: use postcode to get city and region
# XXX: also, store postcode somewhere -- it's valuable!
$profile->location = $sreg['postcode'] . ', ' . $sreg['country'];
} else {
$profile->location = $sreg['country'];
}
}
# XXX save language if it's passed
# XXX save timezone if it's passed
$profile->profileurl = common_profile_url($nickname);
$profile->created = DB_DataObject_Cast::dateTime(); # current time
$id = $profile->insert();
if (!$id) {
common_server_error(_t('Error saving the profile.'));
return;
}
$user = new User();
$user->id = $id;
$user->nickname = $nickname;
$user->uri = common_user_uri($user);
if ($sreg['email'] && Validate::email($sreg['email'], true)) {
$user->email = $sreg['email'];
}
$user->created = DB_DataObject_Cast::dateTime(); # current time
$result = $user->insert();
if (!$result) {
# Try to clean up...
$profile->delete();
}
$result = oid_link_user($user->id, $canonical, $display);
if (!$result) {
# Try to clean up...
$user->delete();
$profile->delete();
}
oid_set_last($display);
common_set_user($user->nickname);
common_real_login(true);
common_redirect(common_local_url('showstream', array('nickname' => $user->nickname)));
}
function connect_user() {
$nickname = $this->trimmed('nickname');
$password = $this->trimmed('password');
if (!common_check_user($nickname, $password)) {
$this->show_form(_t('Invalid username or password.'));
return;
}
# They're legit!
$user = User::staticGet('nickname', $nickname);
list($display, $canonical, $sreg) = $this->get_saved_values();
if (!$display || !$canonical) {
common_server_error(_t('Stored OpenID not found.'));
return;
}
$result = oid_link_user($user->id, $canonical, $display);
if (!$result) {
common_server_error(_t('Error connecting user to OpenID.'));
return;
}
oid_update_user($user, $sreg);
oid_set_last($display);
common_set_user($user->nickname);
common_real_login(true);
$this->go_home($user->nickname);
}
function go_home($nickname) {
$url = common_get_returnto();
if ($url) {
# We don't have to return to it again
common_set_returnto(NULL);
} else {
$url = common_local_url('all',
array('nickname' =>
$nickname));
}
common_redirect($url);
}
function best_new_nickname($display, $sreg) {
# Try the passed-in nickname
if ($sreg['nickname']) {
$nickname = $this->nicknamize($sreg['nickname']);
if ($this->is_new_nickname($nickname)) {
return $nickname;
}
}
# Try the full name
if ($sreg['fullname']) {
$fullname = $this->nicknamize($sreg['fullname']);
if ($this->is_new_nickname($fullname)) {
return $fullname;
}
}
# Try the URL
$from_url = $this->openid_to_nickname($display);
if ($from_url && $this->is_new_nickname($from_url)) {
return $from_url;
}
# XXX: others?
return NULL;
}
function is_new_nickname($str) {
if (!Validate::string($str, array('min_length' => 1,
'max_length' => 64,
'format' => VALIDATE_NUM . VALIDATE_ALPHA_LOWER))) {
return false;
}
if (!User::allowed_nickname($str)) {
return false;
}
if (User::staticGet('nickname', $str)) {
return false;
}
return true;
}
function openid_to_nickname($openid) {
if (Auth_Yadis_identifierScheme($openid) == 'XRI') {
return $this->xri_to_nickname($openid);
} else {
return $this->url_to_nickname($openid);
}
}
# We try to use an OpenID URL as a legal Laconica user name in this order
# 1. Plain hostname, like http://evanp.myopenid.com/
# 2. One element in path, like http://profile.typekey.com/EvanProdromou/
# or http://getopenid.com/evanprodromou
function url_to_nickname($openid) {
static $bad = array('query', 'user', 'password', 'port', 'fragment');
$parts = parse_url($openid);
# If any of these parts exist, this won't work
foreach ($bad as $badpart) {
if (array_key_exists($badpart, $parts)) {
return NULL;
}
}
# We just have host and/or path
# If it's just a host...
if (array_key_exists('host', $parts) &&
(!array_key_exists('path', $parts) || strcmp($parts['path'], '/') == 0))
{
$hostparts = explode('.', $parts['host']);
# Try to catch common idiom of nickname.service.tld
if ((count($hostparts) > 2) &&
(strlen($hostparts[count($hostparts) - 2]) > 3) && # try to skip .co.uk, .com.au
(strcmp($hostparts[0], 'www') != 0))
{
return $this->nicknamize($hostparts[0]);
} else {
# Do the whole hostname
return $this->nicknamize($parts['host']);
}
} else {
if (array_key_exists('path', $parts)) {
# Strip starting, ending slashes
$path = preg_replace('@/$@', '', $parts['path']);
$path = preg_replace('@^/@', '', $path);
if (strpos($path, '/') === false) {
return $this->nicknamize($path);
}
}
}
return NULL;
}
function xri_to_nickname($xri) {
$base = $this->xri_base($xri);
if (!$base) {
return NULL;
} else {
# =evan.prodromou
# or @gratis*evan.prodromou
$parts = explode('*', substr($base, 1));
return $this->nicknamize(array_pop($parts));
}
}
function xri_base($xri) {
if (substr($xri, 0, 6) == 'xri://') {
return substr($xri, 6);
} else {
return $xri;
}
}
# Given a string, try to make it work as a nickname
function nicknamize($str) {
$str = preg_replace('/\W/', '', $str);
return strtolower($str);
}
}