includes/api/ApiLogin.php

   1 <?php
   2 /**
   3  *
   4  *
   5  * Created on Sep 19, 2006
   6  *
   7  * Copyright © 2006-2007 Yuri Astrakhan "<Firstname><Lastname>@gmail.com",
   8  * Daniel Cannon (cannon dot danielc at gmail dot com)
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License along
  21  * with this program; if not, write to the Free Software Foundation, Inc.,
  22  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  23  * http://www.gnu.org/copyleft/gpl.html
  24  *
  25  * @file
  26  */
  27
  28 use MediaWiki\Auth\AuthManager;
  29 use MediaWiki\Auth\AuthenticationRequest;
  30 use MediaWiki\Auth\AuthenticationResponse;
  31 use MediaWiki\Logger\LoggerFactory;
  32
  33 /**
  34  * Unit to authenticate log-in attempts to the current wiki.
  35  *
  36  * @ingroup API
  37  */
  38 class ApiLogin extends ApiBase {
  39
  40         public function __construct( ApiMain $main, $action ) {
  41                 parent::__construct( $main, $action, 'lg' );
  42         }
  43
  44         protected function getDescriptionMessage() {
  45                 if ( $this->getConfig()->get( 'EnableBotPasswords' ) ) {
  46                         return 'apihelp-login-description';
  47                 } else {
  48                         return 'apihelp-login-description-nobotpasswords';
  49                 }
  50         }
  51
  52         /**
  53          * Executes the log-in attempt using the parameters passed. If
  54          * the log-in succeeds, it attaches a cookie to the session
  55          * and outputs the user id, username, and session token. If a
  56          * log-in fails, as the result of a bad password, a nonexistent
  57          * user, or any other reason, the host is cached with an expiry
  58          * and no log-in attempts will be accepted until that expiry
  59          * is reached. The expiry is $this->mLoginThrottle.
  60          */
  61         public function execute() {
  62                 // If we're in a mode that breaks the same-origin policy, no tokens can
  63                 // be obtained
  64                 if ( $this->lacksSameOriginSecurity() ) {
  65                         $this->getResult()->addValue( null, 'login', [
  66                                 'result' => 'Aborted',
  67                                 'reason' => 'Cannot log in when the same-origin policy is not applied',
  68                         ] );
  69
  70                         return;
  71                 }
  72
  73                 try {
  74                         $this->requirePostedParameters( [ 'password', 'token' ] );
  75                 } catch ( UsageException $ex ) {
  76                         // Make this a warning for now, upgrade to an error in 1.29.
  77                         $this->setWarning( $ex->getMessage() );
  78                         $this->logFeatureUsage( 'login-params-in-query-string' );
  79                 }
  80
  81                 $params = $this->extractRequestParams();
  82
  83                 $result = [];
  84
  85                 // Make sure session is persisted
  86                 $session = MediaWiki\Session\SessionManager::getGlobalSession();
  87                 $session->persist();
  88
  89                 // Make sure it's possible to log in
  90                 if ( !$session->canSetUser() ) {
  91                         $this->getResult()->addValue( null, 'login', [
  92                                 'result' => 'Aborted',
  93                                 'reason' => 'Cannot log in when using ' .
  94                                         $session->getProvider()->describe( Language::factory( 'en' ) ),
  95                         ] );
  96
  97                         return;
  98                 }
  99
 100                 $authRes = false;
 101                 $context = new DerivativeContext( $this->getContext() );
 102                 $loginType = 'N/A';
 103
 104                 // Check login token
 105                 $token = $session->getToken( '', 'login' );
 106                 if ( $token->wasNew() || !$params['token'] ) {
 107                         $authRes = 'NeedToken';
 108                 } elseif ( !$token->match( $params['token'] ) ) {
 109                         $authRes = 'WrongToken';
 110                 }
 111
 112                 // Try bot passwords
 113                 if (
 114                         $authRes === false && $this->getConfig()->get( 'EnableBotPasswords' ) &&
 115                         ( $botLoginData = BotPassword::canonicalizeLoginData( $params['name'], $params['password'] ) )
 116                 ) {
 117                         $status = BotPassword::login(
 118                                 $botLoginData[0], $botLoginData[1], $this->getRequest()
 119                         );
 120                         if ( $status->isOK() ) {
 121                                 $session = $status->getValue();
 122                                 $authRes = 'Success';
 123                                 $loginType = 'BotPassword';
 124                         } elseif ( !$botLoginData[2] ) {
 125                                 $authRes = 'Failed';
 126                                 $message = $status->getMessage();
 127                                 LoggerFactory::getInstance( 'authentication' )->info(
 128                                         'BotPassword login failed: ' . $status->getWikiText( false, false, 'en' )
 129                                 );
 130                         }
 131                 }
 132
 133                 if ( $authRes === false ) {
 134                         // Simplified AuthManager login, for backwards compatibility
 135                         $manager = AuthManager::singleton();
 136                         $reqs = AuthenticationRequest::loadRequestsFromSubmission(
 137                                 $manager->getAuthenticationRequests( AuthManager::ACTION_LOGIN, $this->getUser() ),
 138                                 [
 139                                         'username' => $params['name'],
 140                                         'password' => $params['password'],
 141                                         'domain' => $params['domain'],
 142                                         'rememberMe' => true,
 143                                 ]
 144                         );
 145                         $res = AuthManager::singleton()->beginAuthentication( $reqs, 'null:' );
 146                         switch ( $res->status ) {
 147                                 case AuthenticationResponse::PASS:
 148                                         if ( $this->getConfig()->get( 'EnableBotPasswords' ) ) {
 149                                                 $warn = 'Main-account login via action=login is deprecated and may stop working ' .
 150                                                         'without warning.';
 151                                                 $warn .= ' To continue login with action=login, see [[Special:BotPasswords]].';
 152                                                 $warn .= ' To safely continue using main-account login, see action=clientlogin.';
 153                                         } else {
 154                                                 $warn = 'Login via action=login is deprecated and may stop working without warning.';
 155                                                 $warn .= ' To safely log in, see action=clientlogin.';
 156                                         }
 157                                         $this->setWarning( $warn );
 158                                         $authRes = 'Success';
 159                                         $loginType = 'AuthManager';
 160                                         break;
 161
 162                                 case AuthenticationResponse::FAIL:
 163                                         // Hope it's not a PreAuthenticationProvider that failed...
 164                                         $authRes = 'Failed';
 165                                         $message = $res->message;
 166                                         \MediaWiki\Logger\LoggerFactory::getInstance( 'authentication' )
 167                                                 ->info( __METHOD__ . ': Authentication failed: '
 168                                                 . $message->inLanguage( 'en' )->plain() );
 169                                         break;
 170
 171                                 default:
 172                                         \MediaWiki\Logger\LoggerFactory::getInstance( 'authentication' )
 173                                                 ->info( __METHOD__ . ': Authentication failed due to unsupported response type: '
 174                                                 . $res->status, $this->getAuthenticationResponseLogData( $res ) );
 175                                         $authRes = 'Aborted';
 176                                         break;
 177                         }
 178                 }
 179
 180                 $result['result'] = $authRes;
 181                 switch ( $authRes ) {
 182                         case 'Success':
 183                                 $user = $session->getUser();
 184
 185                                 ApiQueryInfo::resetTokenCache();
 186
 187                                 // Deprecated hook
 188                                 $injected_html = '';
 189                                 Hooks::run( 'UserLoginComplete', [ &$user, &$injected_html, true ] );
 190
 191                                 $result['lguserid'] = intval( $user->getId() );
 192                                 $result['lgusername'] = $user->getName();
 193
 194                                 // @todo: These are deprecated, and should be removed at some
 195                                 // point (1.28 at the earliest, and see T121527). They were ok
 196                                 // when the core cookie-based login was the only thing, but
 197                                 // CentralAuth broke that a while back and
 198                                 // SessionManager/AuthManager *really* break it.
 199                                 $result['lgtoken'] = $user->getToken();
 200                                 $result['cookieprefix'] = $this->getConfig()->get( 'CookiePrefix' );
 201                                 $result['sessionid'] = $session->getId();
 202                                 break;
 203
 204                         case 'NeedToken':
 205                                 $result['token'] = $token->toString();
 206                                 $this->setWarning( 'Fetching a token via action=login is deprecated. ' .
 207                                    'Use action=query&meta=tokens&type=login instead.' );
 208                                 $this->logFeatureUsage( 'action=login&!lgtoken' );
 209
 210                                 // @todo: See above about deprecation
 211                                 $result['cookieprefix'] = $this->getConfig()->get( 'CookiePrefix' );
 212                                 $result['sessionid'] = $session->getId();
 213                                 break;
 214
 215                         case 'WrongToken':
 216                                 break;
 217
 218                         case 'Failed':
 219                                 $result['reason'] = $message->useDatabase( 'false' )->inLanguage( 'en' )->text();
 220                                 break;
 221
 222                         case 'Aborted':
 223                                 $result['reason'] = 'Authentication requires user interaction, ' .
 224                                    'which is not supported by action=login.';
 225                                 if ( $this->getConfig()->get( 'EnableBotPasswords' ) ) {
 226                                         $result['reason'] .= ' To be able to login with action=login, see [[Special:BotPasswords]].';
 227                                         $result['reason'] .= ' To continue using main-account login, see action=clientlogin.';
 228                                 } else {
 229                                         $result['reason'] .= ' To log in, see action=clientlogin.';
 230                                 }
 231                                 break;
 232
 233                         default:
 234                                 ApiBase::dieDebug( __METHOD__, "Unhandled case value: {$authRes}" );
 235                 }
 236
 237                 $this->getResult()->addValue( null, 'login', $result );
 238
 239                 if ( $loginType === 'LoginForm' && isset( LoginForm::$statusCodes[$authRes] ) ) {
 240                         $authRes = LoginForm::$statusCodes[$authRes];
 241                 }
 242                 LoggerFactory::getInstance( 'authevents' )->info( 'Login attempt', [
 243                         'event' => 'login',
 244                         'successful' => $authRes === 'Success',
 245                         'loginType' => $loginType,
 246                         'status' => $authRes,
 247                 ] );
 248         }
 249
 250         public function isDeprecated() {
 251                 return !$this->getConfig()->get( 'EnableBotPasswords' );
 252         }
 253
 254         public function mustBePosted() {
 255                 return true;
 256         }
 257
 258         public function isReadMode() {
 259                 return false;
 260         }
 261
 262         public function getAllowedParams() {
 263                 return [
 264                         'name' => null,
 265                         'password' => [
 266                                 ApiBase::PARAM_TYPE => 'password',
 267                         ],
 268                         'domain' => null,
 269                         'token' => [
 270                                 ApiBase::PARAM_TYPE => 'string',
 271                                 ApiBase::PARAM_REQUIRED => false, // for BC
 272                                 ApiBase::PARAM_HELP_MSG => [ 'api-help-param-token', 'login' ],
 273                         ],
 274                 ];
 275         }
 276
 277         protected function getExamplesMessages() {
 278                 return [
 279                         'action=login&lgname=user&lgpassword=password'
 280                                 => 'apihelp-login-example-gettoken',
 281                         'action=login&lgname=user&lgpassword=password&lgtoken=123ABC'
 282                                 => 'apihelp-login-example-login',
 283                 ];
 284         }
 285
 286         public function getHelpUrls() {
 287                 return 'https://www.mediawiki.org/wiki/API:Login';
 288         }
 289
 290         /**
 291          * Turns an AuthenticationResponse into a hash suitable for passing to Logger
 292          * @param AuthenticationResponse $response
 293          * @return array
 294          */
 295         protected function getAuthenticationResponseLogData( AuthenticationResponse $response ) {
 296                 $ret = [
 297                         'status' => $response->status,
 298                 ];
 299                 if ( $response->message ) {
 300                         $ret['message'] = $response->message->inLanguage( 'en' )->plain();
 301                 };
 302                 $reqs = [
 303                         'neededRequests' => $response->neededRequests,
 304                         'createRequest' => $response->createRequest,
 305                         'linkRequest' => $response->linkRequest,
 306                 ];
 307                 foreach ( $reqs as $k => $v ) {
 308                         if ( $v ) {
 309                                 $v = is_array( $v ) ? $v : [ $v ];
 310                                 $reqClasses = array_unique( array_map( 'get_class', $v ) );
 311                                 sort( $reqClasses );
 312                                 $ret[$k] = implode( ', ', $reqClasses );
 313                         }
 314                 }
 315                 return $ret;
 316         }
 317 }