Permalink
Switch branches/tags
Nothing to show
Find file
Fetching contributors…
Cannot retrieve contributors at this time
370 lines (339 sloc) 9.07 KB
<?php
/**
* ownCloud
*
* @author Frank Karlitschek
* @copyright 2010 Frank Karlitschek karlitschek@kde.org
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library 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 library. If not, see <http://www.gnu.org/licenses/>.
*
*/
/**
* This class provides all methods for user management.
*
* Hooks provided:
* pre_createUser(&run, uid, password)
* post_createUser(uid, password)
* pre_deleteUser(&run, uid)
* post_deleteUser(uid)
* pre_setPassword(&run, uid, password)
* post_setPassword(uid, password)
* pre_login(&run, uid)
* post_login(uid)
* logout()
*/
class OC_User {
// The backend used for user management
private static $_usedBackends = array();
// Backends available (except database)
private static $_backends = array();
/**
* @brief registers backend
* @param $name name of the backend
* @returns true/false
*
* Makes a list of backends that can be used by other modules
*/
public static function registerBackend( $name ){
self::$_backends[] = $name;
return true;
}
/**
* @brief gets available backends
* @returns array of backends
*
* Returns the names of all backends.
*/
public static function getBackends(){
return self::$_backends;
}
/**
* @brief gets used backends
* @returns array of backends
*
* Returns the names of all used backends.
*/
public static function getUsedBackends(){
return array_keys(self::$_usedBackends);
}
/**
* @brief Adds the backend to the list of used backends
* @param $backend default: database The backend to use for user managment
* @returns true/false
*
* Set the User Authentication Module
*/
public static function useBackend( $backend = 'database' ){
// You'll never know what happens
if( null === $backend OR !is_string( $backend )){
$backend = 'database';
}
// Load backend
switch( $backend ){
case 'database':
case 'mysql':
case 'sqlite':
self::$_usedBackends[$backend] = new OC_User_Database();
break;
default:
$className = 'OC_USER_' . strToUpper($backend);
self::$_usedBackends[$backend] = new $className();
break;
}
true;
}
/**
* @brief Create a new user
* @param $uid The username of the user to create
* @param $password The password of the new user
* @returns true/false
*
* Creates a new user. Basic checking of username is done in OC_User
* itself, not in its subclasses.
*
* Allowed characters in the username are: "a-z", "A-Z", "0-9" and "_.@-"
*/
public static function createUser( $uid, $password ){
// Check the name for bad characters
// Allowed are: "a-z", "A-Z", "0-9" and "_.@-"
if( preg_match( '/[^a-zA-Z0-9 _\.@\-]/', $uid )){
return false;
}
// No empty username
if(trim($uid) == ''){
return false;
}
// Check if user already exists
if( self::userExists($uid) ){
return false;
}
$run = true;
OC_Hook::emit( "OC_User", "pre_createUser", array( "run" => &$run, "uid" => $uid, "password" => $password ));
if( $run ){
//create the user in the first backend that supports creating users
foreach(self::$_usedBackends as $backend){
if(!$backend->implementsActions(OC_USER_BACKEND_CREATE_USER))
continue;
$backend->createUser($uid,$password);
OC_Hook::emit( "OC_User", "post_createUser", array( "uid" => $uid, "password" => $password ));
return true;
}
}
return false;
}
/**
* @brief delete a user
* @param $uid The username of the user to delete
* @returns true/false
*
* Deletes a user
*/
public static function deleteUser( $uid ){
$run = true;
OC_Hook::emit( "OC_User", "pre_deleteUser", array( "run" => &$run, "uid" => $uid ));
if( $run ){
//delete the user from all backends
foreach(self::$_usedBackends as $backend){
if($backend->implementsActions(OC_USER_BACKEND_DELETE_USER)){
$backend->deleteUser($uid);
}
}
// We have to delete the user from all groups
foreach( OC_Group::getUserGroups( $uid ) as $i ){
OC_Group::removeFromGroup( $uid, $i );
}
// Delete the user's keys in preferences
OC_Preferences::deleteUser($uid);
// Emit and exit
OC_Hook::emit( "OC_User", "post_deleteUser", array( "uid" => $uid ));
return true;
}
else{
return false;
}
}
/**
* @brief Try to login a user
* @param $uid The username of the user to log in
* @param $password The password of the user
* @returns true/false
*
* Log in a user - if the password is ok
*/
public static function login( $uid, $password ){
$run = true;
OC_Hook::emit( "OC_User", "pre_login", array( "run" => &$run, "uid" => $uid ));
if( $run ){
$uid=self::checkPassword( $uid, $password );
if($uid){
OC_Crypt::init($uid,$password);
return self::setUserId($uid);
}
}
return false;
}
/**
* @brief Sets user id for session and triggers emit
* @returns true
*
*/
public static function setUserId($uid) {
$_SESSION['user_id'] = $uid;
OC_Hook::emit( "OC_User", "post_login", array( "uid" => $uid ));
return true;
}
/**
* @brief Kick the user
* @returns true
*
* Logout, destroys session
*/
public static function logout(){
OC_Hook::emit( "OC_User", "logout", array());
$_SESSION['user_id'] = false;
OC_User::unsetMagicInCookie();
return true;
}
/**
* @brief Check if the user is logged in
* @returns true/false
*
* Checks if the user is logged in
*/
public static function isLoggedIn(){
if( isset($_SESSION['user_id']) AND $_SESSION['user_id'] ){
return true;
}
else{
return false;
}
}
/**
* @brief get the user idea of the user currently logged in.
* @return string uid or false
*/
public static function getUser(){
if( isset($_SESSION['user_id']) AND $_SESSION['user_id'] ){
return $_SESSION['user_id'];
}
else{
return false;
}
}
/**
* @brief Autogenerate a password
* @returns string
*
* generates a password
*/
public static function generatePassword(){
return uniqId();
}
/**
* @brief Set password
* @param $uid The username
* @param $password The new password
* @returns true/false
*
* Change the password of a user
*/
public static function setPassword( $uid, $password ){
$run = true;
OC_Hook::emit( "OC_User", "pre_setPassword", array( "run" => &$run, "uid" => $uid, "password" => $password ));
if( $run ){
foreach(self::$_usedBackends as $backend){
if($backend->implementsActions(OC_USER_BACKEND_SET_PASSWORD)){
if($backend->userExists($uid)){
$backend->setPassword($uid,$password);
}
}
}
OC_Hook::emit( "OC_User", "post_setPassword", array( "uid" => $uid, "password" => $password ));
return true;
}
else{
return false;
}
}
/**
* @brief Check if the password is correct
* @param $uid The username
* @param $password The password
* @returns true/false
*
* Check if the password is correct without logging in the user
*/
public static function checkPassword( $uid, $password ){
foreach(self::$_usedBackends as $backend){
if($backend->implementsActions(OC_USER_BACKEND_CHECK_PASSWORD)){
$result=$backend->checkPassword( $uid, $password );
if($result){
return $result;
}
}
}
}
/**
* @brief Get a list of all users
* @returns array with all uids
*
* Get a list of all users.
*/
public static function getUsers(){
$users=array();
foreach(self::$_usedBackends as $backend){
if($backend->implementsActions(OC_USER_BACKEND_GET_USERS)){
$users=array_merge($users,$backend->getUsers());
}
}
return $users;
}
/**
* @brief check if a user exists
* @param string $uid the username
* @return boolean
*/
public static function userExists($uid){
foreach(self::$_usedBackends as $backend){
if($backend->implementsActions(OC_USER_BACKEND_USER_EXISTS)){
$result=$backend->userExists($uid);
if($result===true){
return true;
}
}
}
return false;
}
/**
* @brief Set cookie value to use in next page load
* @param string $username username to be set
*/
public static function setMagicInCookie($username, $token){
$secure_cookie = OC_Config::getValue("forcessl", false);
setcookie("oc_username", $username, time()+60*60*24*15, '', '', $secure_cookie);
setcookie("oc_token", $token, time()+60*60*24*15, '', '', $secure_cookie);
setcookie("oc_remember_login", true, time()+60*60*24*15, '', '', $secure_cookie);
}
/**
* @brief Remove cookie for "remember username"
*/
public static function unsetMagicInCookie(){
unset($_COOKIE["oc_username"]);
unset($_COOKIE["oc_token"]);
unset($_COOKIE["oc_remember_login"]);
setcookie("oc_username", NULL, -1);
setcookie("oc_token", NULL, -1);
setcookie("oc_remember_login", NULL, -1);
}
}