3a7261f70a
Lots of the Memcached_DataObject classes stopped working when upgraded to Managed_DataObject because they lacked schemaDef(). I have _hopefully_ made it so that all the references to the table uses each class' schemaDef, rather than the more manual ColumnDef stuff. Not all plugins have been tested thoroughly yet. NOTE: This is applied with getKV calls instead of staticGet, as it was important for PHP Strict Standards compliance to avoid calling the non- static functions statically. (unfortunately DB and DB_DataObject still do this within themselves...)
263 lines
10 KiB
PHP
263 lines
10 KiB
PHP
<?php
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/**
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* StatusNet, the distributed open-source microblogging tool
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*
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* Superclass for plugins that do authentication and/or authorization
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*
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* PHP version 5
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*
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* LICENCE: This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* @category Plugin
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* @package StatusNet
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* @author Craig Andrews <candrews@integralblue.com>
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* @copyright 2009 Free Software Foundation, Inc http://www.fsf.org
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://status.net/
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*/
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if (!defined('STATUSNET') && !defined('LACONICA')) {
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exit(1);
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}
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/**
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* Superclass for plugins that do authentication
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*
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* @category Plugin
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* @package StatusNet
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* @author Craig Andrews <candrews@integralblue.com>
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* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
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* @link http://status.net/
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*/
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abstract class AuthenticationPlugin extends Plugin
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{
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//is this plugin authoritative for authentication?
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public $authoritative = false;
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//should accounts be automatically created after a successful login attempt?
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public $autoregistration = false;
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//can the user change their email address
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public $password_changeable=true;
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//unique name for this authentication provider
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public $provider_name;
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//------------Auth plugin should implement some (or all) of these methods------------\\
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/**
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* Check if a nickname/password combination is valid
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* @param username
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* @param password
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* @return boolean true if the credentials are valid, false if they are invalid.
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*/
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function checkPassword($username, $password)
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{
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return false;
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}
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/**
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* Automatically register a user when they attempt to login with valid credentials.
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* User::register($data) is a very useful method for this implementation
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* @param username username (that is used to login and find the user in the authentication provider) of the user to be registered
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* @param nickname nickname of the user in the SN system. If nickname is null, then set nickname = username
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* @return mixed instance of User, or false (if user couldn't be created)
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*/
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function autoRegister($username, $nickname = null)
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{
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if(is_null($nickname)){
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$nickname = $username;
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}
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$registration_data = array();
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$registration_data['nickname'] = $nickname;
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return User::register($registration_data);
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}
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/**
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* Change a user's password
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* The old password has been verified to be valid by this plugin before this call is made
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* @param username
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* @param oldpassword
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* @param newpassword
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* @return boolean true if the password was changed, false if password changing failed for some reason
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*/
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function changePassword($username,$oldpassword,$newpassword)
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{
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return false;
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}
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/**
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* Given a username, suggest what the nickname should be
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* Used during autoregistration
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* Useful if your usernames are ugly, and you want to suggest
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* nice looking nicknames when users initially sign on
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* All nicknames returned by this function should be valid
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* implementations may want to use common_nicknamize() to ensure validity
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* @param username
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* @return string nickname
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*/
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function suggestNicknameForUsername($username)
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{
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return common_nicknamize($username);
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}
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//------------Below are the methods that connect StatusNet to the implementing Auth plugin------------\\
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function onInitializePlugin(){
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if(!isset($this->provider_name)){
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throw new Exception("must specify a provider_name for this authentication provider");
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}
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}
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/**
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* Internal AutoRegister event handler
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* @param nickname
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* @param provider_name
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* @param user - the newly registered user
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*/
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function onAutoRegister($nickname, $provider_name, &$user)
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{
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if($provider_name == $this->provider_name && $this->autoregistration){
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$suggested_nickname = $this->suggestNicknameForUsername($nickname);
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$test_user = User::getKV('nickname', $suggested_nickname);
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if($test_user) {
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//someone already exists with the suggested nickname, so used the passed nickname
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$suggested_nickname = common_nicknamize($nickname);
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}
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$test_user = User::getKV('nickname', $suggested_nickname);
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if($test_user) {
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//someone already exists with the suggested nickname
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//not much else we can do
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}else{
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$user = $this->autoRegister($nickname, $suggested_nickname);
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if($user){
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User_username::register($user,$nickname,$this->provider_name);
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return false;
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}
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}
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}
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}
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function onStartCheckPassword($nickname, $password, &$authenticatedUser){
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//map the nickname to a username
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$user_username = new User_username();
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$user_username->username=$nickname;
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$user_username->provider_name=$this->provider_name;
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if($user_username->find() && $user_username->fetch()){
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$authenticated = $this->checkPassword($user_username->username, $password);
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if($authenticated){
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$authenticatedUser = User::getKV('id', $user_username->user_id);
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return false;
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}
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}else{
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//$nickname is the username used to login
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//$suggested_nickname is the nickname the auth provider suggests for that username
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$suggested_nickname = $this->suggestNicknameForUsername($nickname);
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$user = User::getKV('nickname', $suggested_nickname);
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if($user){
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//make sure this user isn't claimed
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$user_username = new User_username();
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$user_username->user_id=$user->id;
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$we_can_handle = false;
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if($user_username->find()){
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//either this provider, or another one, has already claimed this user
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//so we cannot. Let another plugin try.
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return;
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}else{
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//no other provider claims this user, so it's safe for us to handle it
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$authenticated = $this->checkPassword($nickname, $password);
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if($authenticated){
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$authenticatedUser = $user;
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User_username::register($authenticatedUser,$nickname,$this->provider_name);
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return false;
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}
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}
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}else{
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$authenticated = $this->checkPassword($nickname, $password);
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if($authenticated){
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if(! Event::handle('AutoRegister', array($nickname, $this->provider_name, &$authenticatedUser))){
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//unlike most Event::handle lines of code, this one has a ! (not)
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//we want to do this if the event *was* handled - this isn't a "default" implementation
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//like most code of this form.
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if($authenticatedUser){
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return false;
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}
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}
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}
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}
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}
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if($this->authoritative){
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return false;
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}else{
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//we're not authoritative, so let other handlers try
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return;
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}
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}
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function onStartChangePassword($user,$oldpassword,$newpassword)
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{
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if($this->password_changeable){
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$user_username = new User_username();
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$user_username->user_id=$user->id;
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$user_username->provider_name=$this->provider_name;
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if($user_username->find() && $user_username->fetch()){
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$authenticated = $this->checkPassword($user_username->username, $oldpassword);
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if($authenticated){
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$result = $this->changePassword($user_username->username,$oldpassword,$newpassword);
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if($result){
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//stop handling of other handlers, because what was requested was done
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return false;
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}else{
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// TRANS: Exception thrown when a password change fails.
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throw new Exception(_('Password changing failed.'));
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}
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}else{
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if($this->authoritative){
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//since we're authoritative, no other plugin could do this
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// TRANS: Exception thrown when a password change fails.
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throw new Exception(_('Password changing failed.'));
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}else{
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//let another handler try
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return null;
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}
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}
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}
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}else{
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if($this->authoritative){
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//since we're authoritative, no other plugin could do this
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// TRANS: Exception thrown when a password change attempt fails because it is not allowed.
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throw new Exception(_('Password changing is not allowed.'));
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}
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}
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}
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function onStartAccountSettingsPasswordMenuItem($widget)
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{
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if($this->authoritative && !$this->password_changeable){
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//since we're authoritative, no other plugin could change passwords, so do not render the menu item
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return false;
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}
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}
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function onCheckSchema() {
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$schema = Schema::get();
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$schema->ensureTable('user_username', User_username::schemaDef());
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return true;
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}
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function onUserDeleteRelated($user, &$tables)
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{
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$tables[] = 'User_username';
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return true;
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}
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}
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