src/Security/Authentication.php

   1 <?php
   2 /**
   3  * @copyright Copyright (C) 2010-2022, the Friendica project
   4  *
   5  * @license GNU AGPL version 3 or any later version
   6  *
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as
   9  * published by the Free Software Foundation, either version 3 of the
  10  * License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  19  *
  20  */
  21
  22 namespace Friendica\Security;
  23
  24 use Exception;
  25 use Friendica\App;
  26 use Friendica\Core\Config\Capability\IManageConfigValues;
  27 use Friendica\Core\PConfig\Capability\IManagePersonalConfigValues;
  28 use Friendica\Core\Hook;
  29 use Friendica\Core\Session\Capability\IHandleSessions;
  30 use Friendica\Core\System;
  31 use Friendica\Database\Database;
  32 use Friendica\Database\DBA;
  33 use Friendica\DI;
  34 use Friendica\Model\User;
  35 use Friendica\Network\HTTPException;
  36 use Friendica\Security\TwoFactor\Repository\TrustedBrowser;
  37 use Friendica\Util\DateTimeFormat;
  38 use Friendica\Util\Network;
  39 use LightOpenID;
  40 use Friendica\Core\L10n;
  41 use Psr\Log\LoggerInterface;
  42
  43 /**
  44  * Handle Authentication, Session and Cookies
  45  */
  46 class Authentication
  47 {
  48         /** @var IManageConfigValues */
  49         private $config;
  50         /** @var App\Mode */
  51         private $mode;
  52         /** @var App\BaseURL */
  53         private $baseUrl;
  54         /** @var L10n */
  55         private $l10n;
  56         /** @var Database */
  57         private $dba;
  58         /** @var LoggerInterface */
  59         private $logger;
  60         /** @var User\Cookie */
  61         private $cookie;
  62         /** @var IHandleSessions */
  63         private $session;
  64         /** @var IManagePersonalConfigValues */
  65         private $pConfig;
  66         /** @var string */
  67         private $remoteAddress;
  68
  69         /**
  70          * Sets the X-Account-Management-Status header
  71          *
  72          * mainly extracted to make it overridable for tests
  73          *
  74          * @param array $user_record
  75          */
  76         protected function setXAccMgmtStatusHeader(array $user_record)
  77         {
  78                 header('X-Account-Management-Status: active; name="' . $user_record['username'] . '"; id="' . $user_record['nickname'] . '"');
  79         }
  80
  81         /**
  82          * Authentication constructor.
  83          *
  84          * @param IManageConfigValues         $config
  85          * @param App\Mode                    $mode
  86          * @param App\BaseURL                 $baseUrl
  87          * @param L10n                        $l10n
  88          * @param Database                    $dba
  89          * @param LoggerInterface             $logger
  90          * @param User\Cookie                 $cookie
  91          * @param IHandleSessions             $session
  92          * @param IManagePersonalConfigValues $pConfig
  93          * @param App\Request                 $request
  94          */
  95         public function __construct(IManageConfigValues $config, App\Mode $mode, App\BaseURL $baseUrl, L10n $l10n, Database $dba, LoggerInterface $logger, User\Cookie $cookie, IHandleSessions $session, IManagePersonalConfigValues $pConfig, App\Request $request)
  96         {
  97                 $this->config        = $config;
  98                 $this->mode          = $mode;
  99                 $this->baseUrl       = $baseUrl;
 100                 $this->l10n          = $l10n;
 101                 $this->dba           = $dba;
 102                 $this->logger        = $logger;
 103                 $this->cookie        = $cookie;
 104                 $this->session       = $session;
 105                 $this->pConfig       = $pConfig;
 106                 $this->remoteAddress = $request->getRemoteAddress();
 107         }
 108
 109         /**
 110          * Tries to auth the user from the cookie or session
 111          *
 112          * @param App   $a      The Friendica Application context
 113          *
 114          * @throws HttpException\InternalServerErrorException In case of Friendica internal exceptions
 115          * @throws Exception In case of general exceptions (like SQL Grammar)
 116          */
 117         public function withSession(App $a)
 118         {
 119                 // When the "Friendica" cookie is set, take the value to authenticate and renew the cookie.
 120                 if ($this->cookie->get('uid')) {
 121                         $user = $this->dba->selectFirst(
 122                                 'user',
 123                                 [],
 124                                 [
 125                                         'uid'             => $this->cookie->get('uid'),
 126                                         'blocked'         => false,
 127                                         'account_expired' => false,
 128                                         'account_removed' => false,
 129                                         'verified'        => true,
 130                                 ]
 131                         );
 132                         if ($this->dba->isResult($user)) {
 133                                 if (!$this->cookie->comparePrivateDataHash($this->cookie->get('hash'),
 134                                         $user['password'] ?? '',
 135                                         $user['prvkey'] ?? '')
 136                                 ) {
 137                                         $this->logger->notice("Hash doesn't fit.", ['user' => $this->cookie->get('uid')]);
 138                                         $this->session->clear();
 139                                         $this->cookie->clear();
 140                                         $this->baseUrl->redirect();
 141                                 }
 142
 143                                 // Renew the cookie
 144                                 $this->cookie->send();
 145
 146                                 // Do the authentication if not done by now
 147                                 if (!$this->session->get('authenticated')) {
 148                                         $this->setForUser($a, $user);
 149
 150                                         if ($this->config->get('system', 'paranoia')) {
 151                                                 $this->session->set('addr', $this->cookie->get('ip'));
 152                                         }
 153                                 }
 154                         }
 155                 }
 156
 157                 if ($this->session->get('authenticated')) {
 158                         if ($this->session->get('visitor_id') && !$this->session->get('uid')) {
 159                                 $contact = $this->dba->selectFirst('contact', ['id'], ['id' => $this->session->get('visitor_id')]);
 160                                 if ($this->dba->isResult($contact)) {
 161                                         $a->setContactId($contact['id']);
 162                                 }
 163                         }
 164
 165                         if ($this->session->get('uid')) {
 166                                 // already logged in user returning
 167                                 $check = $this->config->get('system', 'paranoia');
 168                                 // extra paranoia - if the IP changed, log them out
 169                                 if ($check && ($this->session->get('addr') != $this->remoteAddress)) {
 170                                         $this->logger->notice('Session address changed. Paranoid setting in effect, blocking session. ', [
 171                                                 'addr'        => $this->session->get('addr'),
 172                                                 'remote_addr' => $this->remoteAddress
 173                                         ]
 174                                         );
 175                                         $this->session->clear();
 176                                         $this->baseUrl->redirect();
 177                                 }
 178
 179                                 $user = $this->dba->selectFirst(
 180                                         'user',
 181                                         [],
 182                                         [
 183                                                 'uid'             => $this->session->get('uid'),
 184                                                 'blocked'         => false,
 185                                                 'account_expired' => false,
 186                                                 'account_removed' => false,
 187                                                 'verified'        => true,
 188                                         ]
 189                                 );
 190                                 if (!$this->dba->isResult($user)) {
 191                                         $this->session->clear();
 192                                         $this->baseUrl->redirect();
 193                                 }
 194
 195                                 // Make sure to refresh the last login time for the user if the user
 196                                 // stays logged in for a long time, e.g. with "Remember Me"
 197                                 $login_refresh = false;
 198                                 if (!$this->session->get('last_login_date')) {
 199                                         $this->session->set('last_login_date', DateTimeFormat::utcNow());
 200                                 }
 201                                 if (strcmp(DateTimeFormat::utc('now - 12 hours'), $this->session->get('last_login_date')) > 0) {
 202                                         $this->session->set('last_login_date', DateTimeFormat::utcNow());
 203                                         $login_refresh = true;
 204                                 }
 205
 206                                 $this->setForUser($a, $user, false, false, $login_refresh);
 207                         }
 208                 }
 209         }
 210
 211         /**
 212          * Attempts to authenticate using OpenId
 213          *
 214          * @param string $openid_url OpenID URL string
 215          * @param bool   $remember   Whether to set the session remember flag
 216          *
 217          * @throws HttpException\InternalServerErrorException In case of Friendica internal exceptions
 218          */
 219         public function withOpenId(string $openid_url, bool $remember)
 220         {
 221                 $noid = $this->config->get('system', 'no_openid');
 222
 223                 // if it's an email address or doesn't resolve to a URL, fail.
 224                 if ($noid || strpos($openid_url, '@') || !Network::isUrlValid($openid_url)) {
 225                         DI::sysmsg()->addNotice($this->l10n->t('Login failed.'));
 226                         $this->baseUrl->redirect();
 227                 }
 228
 229                 // Otherwise it's probably an openid.
 230                 try {
 231                         $openid           = new LightOpenID($this->baseUrl->getHostname());
 232                         $openid->identity = $openid_url;
 233                         $this->session->set('openid', $openid_url);
 234                         $this->session->set('remember', $remember);
 235                         $openid->returnUrl = $this->baseUrl->get(true) . '/openid';
 236                         $openid->optional  = ['namePerson/friendly', 'contact/email', 'namePerson', 'namePerson/first', 'media/image/aspect11', 'media/image/default'];
 237                         System::externalRedirect($openid->authUrl());
 238                 } catch (Exception $e) {
 239                         DI::sysmsg()->addNotice($this->l10n->t('We encountered a problem while logging in with the OpenID you provided. Please check the correct spelling of the ID.') . '<br /><br >' . $this->l10n->t('The error message was:') . ' ' . $e->getMessage());
 240                 }
 241         }
 242
 243         /**
 244          * Attempts to authenticate using login/password
 245          *
 246          * @param App    $a           The Friendica Application context
 247          * @param string $username
 248          * @param string $password    Clear password
 249          * @param bool   $remember    Whether to set the session remember flag
 250          * @param string $return_path The relative path to redirect the user to after authentication
 251          *
 252          * @throws HTTPException\ForbiddenException
 253          * @throws HTTPException\FoundException
 254          * @throws HTTPException\InternalServerErrorException In case of Friendica internal exceptions
 255          * @throws HTTPException\MovedPermanentlyException
 256          * @throws HTTPException\TemporaryRedirectException
 257          */
 258         public function withPassword(App $a, string $username, string $password, bool $remember, string $return_path = '')
 259         {
 260                 $record = null;
 261
 262                 try {
 263                         $record = $this->dba->selectFirst(
 264                                 'user',
 265                                 [],
 266                                 ['uid' => User::getIdFromPasswordAuthentication($username, $password)]
 267                         );
 268                 } catch (Exception $e) {
 269                         $this->logger->warning('authenticate: failed login attempt', ['action' => 'login', 'username' => $username, 'ip' => $this->remoteAddress]);
 270                         DI::sysmsg()->addNotice($this->l10n->t('Login failed. Please check your credentials.'));
 271                         $this->baseUrl->redirect();
 272                 }
 273
 274                 if (!$remember) {
 275                         $trusted = $this->cookie->get('2fa_cookie_hash') ?? null;
 276                         $this->cookie->clear();
 277                         if ($trusted) {
 278                                 $this->cookie->set('2fa_cookie_hash', $trusted);
 279                         }
 280                 }
 281
 282                 // if we haven't failed up this point, log them in.
 283                 $this->session->set('remember', $remember);
 284                 $this->session->set('last_login_date', DateTimeFormat::utcNow());
 285
 286                 $openid_identity = $this->session->get('openid_identity');
 287                 $openid_server   = $this->session->get('openid_server');
 288
 289                 if (!empty($openid_identity) || !empty($openid_server)) {
 290                         $this->dba->update('user', ['openid' => $openid_identity, 'openidserver' => $openid_server], ['uid' => $record['uid']]);
 291                 }
 292
 293                 /**
 294                  * @see User::getPasswordRegExp()
 295                  */
 296                 if (PASSWORD_DEFAULT === PASSWORD_BCRYPT && strlen($password) > 72) {
 297                         $return_path = '/security/password_too_long?' . http_build_query(['return_path' => $return_path]);
 298                 }
 299
 300                 $this->setForUser($a, $record, true, true);
 301
 302                 $this->baseUrl->redirect($return_path);
 303         }
 304
 305         /**
 306          * Sets the provided user's authenticated session
 307          *
 308          * @param App   $a           The Friendica application context
 309          * @param array $user_record The current "user" record
 310          * @param bool  $login_initial
 311          * @param bool  $interactive
 312          * @param bool  $login_refresh
 313          *
 314          * @throws HTTPException\FoundException
 315          * @throws HTTPException\MovedPermanentlyException
 316          * @throws HTTPException\TemporaryRedirectException
 317          * @throws HTTPException\ForbiddenException
 318
 319          * @throws HTTPException\InternalServerErrorException In case of Friendica specific exceptions
 320          *
 321          */
 322         public function setForUser(App $a, array $user_record, bool $login_initial = false, bool $interactive = false, bool $login_refresh = false)
 323         {
 324                 $this->session->setMultiple([
 325                         'uid'           => $user_record['uid'],
 326                         'theme'         => $user_record['theme'],
 327                         'mobile-theme'  => $this->pConfig->get($user_record['uid'], 'system', 'mobile_theme'),
 328                         'authenticated' => 1,
 329                         'page_flags'    => $user_record['page-flags'],
 330                         'my_url'        => $this->baseUrl->get() . '/profile/' . $user_record['nickname'],
 331                         'my_address'    => $user_record['nickname'] . '@' . substr($this->baseUrl->get(), strpos($this->baseUrl->get(), '://') + 3),
 332                         'addr'          => $this->remoteAddress,
 333                 ]);
 334
 335                 DI::userSession()->setVisitorsContacts();
 336
 337                 $member_since = strtotime($user_record['register_date']);
 338                 $this->session->set('new_member', time() < ($member_since + (60 * 60 * 24 * 14)));
 339
 340                 if (strlen($user_record['timezone'])) {
 341                         $a->setTimeZone($user_record['timezone']);
 342                 }
 343
 344                 $contact = $this->dba->selectFirst('contact', ['id'], ['uid' => $user_record['uid'], 'self' => true]);
 345                 if ($this->dba->isResult($contact)) {
 346                         $a->setContactId($contact['id']);
 347                         $this->session->set('cid', $contact['id']);
 348                 }
 349
 350                 $this->setXAccMgmtStatusHeader($user_record);
 351
 352                 if ($login_initial || $login_refresh) {
 353                         $this->dba->update('user', ['login_date' => DateTimeFormat::utcNow()], ['uid' => $user_record['uid']]);
 354
 355                         // Set the login date for all identities of the user
 356                         $this->dba->update('user', ['login_date' => DateTimeFormat::utcNow()],
 357                                 ['parent-uid' => $user_record['uid'], 'account_removed' => false]);
 358                 }
 359
 360                 if ($login_initial) {
 361                         /*
 362                          * If the user specified to remember the authentication, then set a cookie
 363                          * that expires after one week (the default is when the browser is closed).
 364                          * The cookie will be renewed automatically.
 365                          * The week ensures that sessions will expire after some inactivity.
 366                          */
 367                         if ($this->session->get('remember')) {
 368                                 $this->logger->info('Injecting cookie for remembered user ' . $user_record['nickname']);
 369                                 $this->cookie->setMultiple([
 370                                         'uid'  => $user_record['uid'],
 371                                         'hash' => $this->cookie->hashPrivateData($user_record['password'], $user_record['prvkey']),
 372                                 ]);
 373                                 $this->session->remove('remember');
 374                         }
 375                 }
 376
 377                 $this->redirectForTwoFactorAuthentication($user_record['uid']);
 378
 379                 if ($interactive) {
 380                         if ($user_record['login_date'] <= DBA::NULL_DATETIME) {
 381                                 DI::sysmsg()->addInfo($this->l10n->t('Welcome %s', $user_record['username']));
 382                                 DI::sysmsg()->addInfo($this->l10n->t('Please upload a profile photo.'));
 383                                 $this->baseUrl->redirect('settings/profile/photo/new');
 384                         }
 385                 }
 386
 387                 $a->setLoggedInUserId($user_record['uid']);
 388                 $a->setLoggedInUserNickname($user_record['nickname']);
 389
 390                 if ($login_initial) {
 391                         Hook::callAll('logged_in', $user_record);
 392                 }
 393         }
 394
 395         /**
 396          * Decides whether to redirect the user to two-factor authentication.
 397          * All return calls in this method skip two-factor authentication
 398          *
 399          * @param int $uid The User Identified
 400          *
 401          * @throws HTTPException\ForbiddenException In case the two factor authentication is forbidden (e.g. for AJAX calls)
 402          * @throws HTTPException\InternalServerErrorException
 403          */
 404         private function redirectForTwoFactorAuthentication(int $uid)
 405         {
 406                 // Check user setting, if 2FA disabled return
 407                 if (!$this->pConfig->get($uid, '2fa', 'verified')) {
 408                         return;
 409                 }
 410
 411                 // Check current path, if public or 2fa module return
 412                 if (DI::args()->getArgc() > 0 && in_array(DI::args()->getArgv()[0], ['2fa', 'view', 'help', 'api', 'proxy', 'logout'])) {
 413                         return;
 414                 }
 415
 416                 // Case 1a: 2FA session already present: return
 417                 if ($this->session->get('2fa')) {
 418                         return;
 419                 }
 420
 421                 // Case 1b: Check for trusted browser
 422                 if ($this->cookie->get('2fa_cookie_hash')) {
 423                         // Retrieve a trusted_browser model based on cookie hash
 424                         $trustedBrowserRepository = new TrustedBrowser($this->dba, $this->logger);
 425                         try {
 426                                 $trustedBrowser = $trustedBrowserRepository->selectOneByHash($this->cookie->get('2fa_cookie_hash'));
 427                                 // Verify record ownership
 428                                 if ($trustedBrowser->uid === $uid) {
 429                                         // Update last_used date
 430                                         $trustedBrowser->recordUse();
 431
 432                                         // Save it to the database
 433                                         $trustedBrowserRepository->save($trustedBrowser);
 434
 435                                         // Only use this entry, if its really trusted, otherwise just update the record and proceed
 436                                         if ($trustedBrowser->trusted) {
 437                                                 // Set 2fa session key and return
 438                                                 $this->session->set('2fa', true);
 439
 440                                                 return;
 441                                         }
 442                                 } else {
 443                                         // Invalid trusted cookie value, removing it
 444                                         $this->cookie->unset('trusted');
 445                                 }
 446                         } catch (\Throwable $e) {
 447                                 // Local trusted browser record was probably removed by the user, we carry on with 2FA
 448                         }
 449                 }
 450
 451                 // Case 2: No valid 2FA session: redirect to code verification page
 452                 if ($this->mode->isAjax()) {
 453                         throw new HTTPException\ForbiddenException();
 454                 } else {
 455                         $this->baseUrl->redirect('2fa');
 456                 }
 457         }
 458 }