308 lines
8.2 KiB
PHP
308 lines
8.2 KiB
PHP
<?php
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/**
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* @copyright Copyright (c) 2016, ownCloud, Inc.
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* @copyright Copyright (c) 2016, Christoph Wurst <christoph@winzerhof-wurst.at>
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*
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* @author Christoph Wurst <christoph@owncloud.com>
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*
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* @license AGPL-3.0
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*
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* This code 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, version 3,
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* as published by the Free Software Foundation.
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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, version 3,
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* along with this program. If not, see <http://www.gnu.org/licenses/>
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*
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*/
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namespace OC\Authentication\Token;
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use Exception;
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use OC\Authentication\Exceptions\InvalidTokenException;
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use OC\Authentication\Exceptions\PasswordlessTokenException;
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use OCP\AppFramework\Db\DoesNotExistException;
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use OCP\AppFramework\Utility\ITimeFactory;
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use OCP\IConfig;
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use OCP\ILogger;
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use OCP\IUser;
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use OCP\Security\ICrypto;
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class DefaultTokenProvider implements IProvider {
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/** @var DefaultTokenMapper */
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private $mapper;
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/** @var ICrypto */
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private $crypto;
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/** @var IConfig */
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private $config;
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/** @var ILogger $logger */
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private $logger;
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/** @var ITimeFactory $time */
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private $time;
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/**
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* @param DefaultTokenMapper $mapper
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* @param ICrypto $crypto
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* @param IConfig $config
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* @param ILogger $logger
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* @param ITimeFactory $time
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*/
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public function __construct(DefaultTokenMapper $mapper,
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ICrypto $crypto,
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IConfig $config,
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ILogger $logger,
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ITimeFactory $time) {
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$this->mapper = $mapper;
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$this->crypto = $crypto;
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$this->config = $config;
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$this->logger = $logger;
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$this->time = $time;
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}
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/**
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* Create and persist a new token
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*
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* @param string $token
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* @param string $uid
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* @param string $loginName
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* @param string|null $password
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* @param string $name
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* @param int $type token type
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* @param int $remember whether the session token should be used for remember-me
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* @return IToken
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*/
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public function generateToken($token, $uid, $loginName, $password, $name, $type = IToken::TEMPORARY_TOKEN, $remember = IToken::DO_NOT_REMEMBER) {
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$dbToken = new DefaultToken();
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$dbToken->setUid($uid);
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$dbToken->setLoginName($loginName);
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if (!is_null($password)) {
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$dbToken->setPassword($this->encryptPassword($password, $token));
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}
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$dbToken->setName($name);
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$dbToken->setToken($this->hashToken($token));
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$dbToken->setType($type);
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$dbToken->setRemember($remember);
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$dbToken->setLastActivity($this->time->getTime());
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$this->mapper->insert($dbToken);
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return $dbToken;
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}
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/**
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* Save the updated token
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*
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* @param IToken $token
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* @throws InvalidTokenException
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*/
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public function updateToken(IToken $token) {
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if (!($token instanceof DefaultToken)) {
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throw new InvalidTokenException();
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}
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$this->mapper->update($token);
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}
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/**
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* Update token activity timestamp
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*
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* @throws InvalidTokenException
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* @param IToken $token
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*/
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public function updateTokenActivity(IToken $token) {
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if (!($token instanceof DefaultToken)) {
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throw new InvalidTokenException();
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}
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/** @var DefaultToken $token */
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$now = $this->time->getTime();
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if ($token->getLastActivity() < ($now - 60)) {
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// Update token only once per minute
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$token->setLastActivity($now);
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$this->mapper->update($token);
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}
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}
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/**
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* Get all token of a user
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*
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* The provider may limit the number of result rows in case of an abuse
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* where a high number of (session) tokens is generated
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*
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* @param IUser $user
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* @return IToken[]
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*/
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public function getTokenByUser(IUser $user) {
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return $this->mapper->getTokenByUser($user);
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}
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/**
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* Get a token by token
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*
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* @param string $tokenId
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* @throws InvalidTokenException
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* @return DefaultToken
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*/
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public function getToken($tokenId) {
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try {
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return $this->mapper->getToken($this->hashToken($tokenId));
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} catch (DoesNotExistException $ex) {
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throw new InvalidTokenException();
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}
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}
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/**
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* Get a token by token id
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*
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* @param string $tokenId
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* @throws InvalidTokenException
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* @return DefaultToken
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*/
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public function getTokenById($tokenId) {
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try {
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return $this->mapper->getTokenById($tokenId);
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} catch (DoesNotExistException $ex) {
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throw new InvalidTokenException();
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}
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}
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/**
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* @param string $oldSessionId
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* @param string $sessionId
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* @throws InvalidTokenException
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*/
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public function renewSessionToken($oldSessionId, $sessionId) {
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$token = $this->getToken($oldSessionId);
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$newToken = new DefaultToken();
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$newToken->setUid($token->getUID());
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$newToken->setLoginName($token->getLoginName());
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if (!is_null($token->getPassword())) {
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$password = $this->decryptPassword($token->getPassword(), $oldSessionId);
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$newToken->setPassword($this->encryptPassword($password, $sessionId));
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}
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$newToken->setName($token->getName());
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$newToken->setToken($this->hashToken($sessionId));
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$newToken->setType(IToken::TEMPORARY_TOKEN);
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$newToken->setRemember($token->getRemember());
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$newToken->setLastActivity($this->time->getTime());
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$this->mapper->insert($newToken);
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}
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/**
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* @param IToken $savedToken
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* @param string $tokenId session token
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* @throws InvalidTokenException
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* @throws PasswordlessTokenException
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* @return string
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*/
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public function getPassword(IToken $savedToken, $tokenId) {
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$password = $savedToken->getPassword();
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if (is_null($password)) {
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throw new PasswordlessTokenException();
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}
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return $this->decryptPassword($password, $tokenId);
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}
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/**
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* Encrypt and set the password of the given token
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*
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* @param IToken $token
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* @param string $tokenId
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* @param string $password
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* @throws InvalidTokenException
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*/
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public function setPassword(IToken $token, $tokenId, $password) {
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if (!($token instanceof DefaultToken)) {
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throw new InvalidTokenException();
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}
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/** @var DefaultToken $token */
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$token->setPassword($this->encryptPassword($password, $tokenId));
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$this->mapper->update($token);
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}
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/**
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* Invalidate (delete) the given session token
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*
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* @param string $token
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*/
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public function invalidateToken($token) {
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$this->mapper->invalidate($this->hashToken($token));
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}
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/**
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* Invalidate (delete) the given token
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*
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* @param IUser $user
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* @param int $id
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*/
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public function invalidateTokenById(IUser $user, $id) {
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$this->mapper->deleteById($user, $id);
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}
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/**
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* Invalidate (delete) old session tokens
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*/
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public function invalidateOldTokens() {
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$olderThan = $this->time->getTime() - (int) $this->config->getSystemValue('session_lifetime', 60 * 60 * 24);
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$this->logger->debug('Invalidating session tokens older than ' . date('c', $olderThan), ['app' => 'cron']);
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$this->mapper->invalidateOld($olderThan, IToken::DO_NOT_REMEMBER);
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$rememberThreshold = $this->time->getTime() - (int) $this->config->getSystemValue('remember_login_cookie_lifetime', 60 * 60 * 24 * 15);
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$this->logger->debug('Invalidating remembered session tokens older than ' . date('c', $rememberThreshold), ['app' => 'cron']);
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$this->mapper->invalidateOld($rememberThreshold, IToken::REMEMBER);
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}
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/**
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* @param string $token
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* @return string
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*/
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private function hashToken($token) {
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$secret = $this->config->getSystemValue('secret');
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return hash('sha512', $token . $secret);
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}
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/**
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* Encrypt the given password
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*
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* The token is used as key
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*
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* @param string $password
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* @param string $token
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* @return string encrypted password
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*/
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private function encryptPassword($password, $token) {
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$secret = $this->config->getSystemValue('secret');
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return $this->crypto->encrypt($password, $token . $secret);
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}
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/**
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* Decrypt the given password
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*
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* The token is used as key
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*
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* @param string $password
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* @param string $token
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* @throws InvalidTokenException
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* @return string the decrypted key
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*/
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private function decryptPassword($password, $token) {
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$secret = $this->config->getSystemValue('secret');
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try {
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return $this->crypto->decrypt($password, $token . $secret);
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} catch (Exception $ex) {
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// Delete the invalid token
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$this->invalidateToken($token);
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throw new InvalidTokenException();
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}
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}
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}
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