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                 $params = $this->extractRequestParams();
  74
  75                 $result = [];
  76
  77                 // Make sure session is persisted
  78                 $session = MediaWiki\Session\SessionManager::getGlobalSession();
  79                 $session->persist();
  80
  81                 // Make sure it's possible to log in
  82                 if ( !$session->canSetUser() ) {
  83                         $this->getResult()->addValue( null, 'login', [
  84                                 'result' => 'Aborted',
  85                                 'reason' => 'Cannot log in when using ' .
  86                                         $session->getProvider()->describe( Language::factory( 'en' ) ),
  87                         ] );
  88
  89                         return;
  90                 }
  91
  92                 $authRes = false;
  93                 $context = new DerivativeContext( $this->getContext() );
  94                 $loginType = 'N/A';
  95
  96                 // Check login token
  97                 $token = $session->getToken( '', 'login' );
  98                 if ( $token->wasNew() || !$params['token'] ) {
  99                         $authRes = 'NeedToken';
 100                 } elseif ( !$token->match( $params['token'] ) ) {
 101                         $authRes = 'WrongToken';
 102                 }
 103
 104                 // Try bot passwords
 105                 if ( $authRes === false && $this->getConfig()->get( 'EnableBotPasswords' ) &&
 106                         strpos( $params['name'], BotPassword::getSeparator() ) !== false
 107                 ) {
 108                         $status = BotPassword::login(
 109                                 $params['name'], $params['password'], $this->getRequest()
 110                         );
 111                         if ( $status->isOK() ) {
 112                                 $session = $status->getValue();
 113                                 $authRes = 'Success';
 114                                 $loginType = 'BotPassword';
 115                         } else {
 116                                 $authRes = 'Failed';
 117                                 $message = $status->getMessage();
 118                                 LoggerFactory::getInstance( 'authentication' )->info(
 119                                         'BotPassword login failed: ' . $status->getWikiText( false, false, 'en' )
 120                                 );
 121                         }
 122                 }
 123
 124                 if ( $authRes === false ) {
 125                         // Simplified AuthManager login, for backwards compatibility
 126                         $manager = AuthManager::singleton();
 127                         $reqs = AuthenticationRequest::loadRequestsFromSubmission(
 128                                 $manager->getAuthenticationRequests( AuthManager::ACTION_LOGIN, $this->getUser() ),
 129                                 [
 130                                         'username' => $params['name'],
 131                                         'password' => $params['password'],
 132                                         'domain' => $params['domain'],
 133                                         'rememberMe' => true,
 134                                 ]
 135                         );
 136                         $res = AuthManager::singleton()->beginAuthentication( $reqs, 'null:' );
 137                         switch ( $res->status ) {
 138                                 case AuthenticationResponse::PASS:
 139                                         if ( $this->getConfig()->get( 'EnableBotPasswords' ) ) {
 140                                                 $warn = 'Main-account login via action=login is deprecated and may stop working ' .
 141                                                         'without warning.';
 142                                                 $warn .= ' To continue login with action=login, see [[Special:BotPasswords]].';
 143                                                 $warn .= ' To safely continue using main-account login, see action=clientlogin.';
 144                                         } else {
 145                                                 $warn = 'Login via action=login is deprecated and may stop working without warning.';
 146                                                 $warn .= ' To safely log in, see action=clientlogin.';
 147                                         }
 148                                         $this->setWarning( $warn );
 149                                         $authRes = 'Success';
 150                                         $loginType = 'AuthManager';
 151                                         break;
 152
 153                                 case AuthenticationResponse::FAIL:
 154                                         // Hope it's not a PreAuthenticationProvider that failed...
 155                                         $authRes = 'Failed';
 156                                         $message = $res->message;
 157                                         \MediaWiki\Logger\LoggerFactory::getInstance( 'authentication' )
 158                                                 ->info( __METHOD__ . ': Authentication failed: '
 159                                                 . $message->inLanguage( 'en' )->plain() );
 160                                         break;
 161
 162                                 default:
 163                                         \MediaWiki\Logger\LoggerFactory::getInstance( 'authentication' )
 164                                                 ->info( __METHOD__ . ': Authentication failed due to unsupported response type: '
 165                                                 . $res->status, $this->getAuthenticationResponseLogData( $res ) );
 166                                         $authRes = 'Aborted';
 167                                         break;
 168                         }
 169                 }
 170
 171                 $result['result'] = $authRes;
 172                 switch ( $authRes ) {
 173                         case 'Success':
 174                                 $user = $session->getUser();
 175
 176                                 ApiQueryInfo::resetTokenCache();
 177
 178                                 // Deprecated hook
 179                                 $injected_html = '';
 180                                 Hooks::run( 'UserLoginComplete', [ &$user, &$injected_html, true ] );
 181
 182                                 $result['lguserid'] = intval( $user->getId() );
 183                                 $result['lgusername'] = $user->getName();
 184
 185                                 // @todo: These are deprecated, and should be removed at some
 186                                 // point (1.28 at the earliest, and see T121527). They were ok
 187                                 // when the core cookie-based login was the only thing, but
 188                                 // CentralAuth broke that a while back and
 189                                 // SessionManager/AuthManager *really* break it.
 190                                 $result['lgtoken'] = $user->getToken();
 191                                 $result['cookieprefix'] = $this->getConfig()->get( 'CookiePrefix' );
 192                                 $result['sessionid'] = $session->getId();
 193                                 break;
 194
 195                         case 'NeedToken':
 196                                 $result['token'] = $token->toString();
 197                                 $this->setWarning( 'Fetching a token via action=login is deprecated. ' .
 198                                    'Use action=query&meta=tokens&type=login instead.' );
 199                                 $this->logFeatureUsage( 'action=login&!lgtoken' );
 200
 201                                 // @todo: See above about deprecation
 202                                 $result['cookieprefix'] = $this->getConfig()->get( 'CookiePrefix' );
 203                                 $result['sessionid'] = $session->getId();
 204                                 break;
 205
 206                         case 'WrongToken':
 207                                 break;
 208
 209                         case 'Failed':
 210                                 $result['reason'] = $message->useDatabase( 'false' )->inLanguage( 'en' )->text();
 211                                 break;
 212
 213                         case 'Aborted':
 214                                 $result['reason'] = 'Authentication requires user interaction, ' .
 215                                    'which is not supported by action=login.';
 216                                 if ( $this->getConfig()->get( 'EnableBotPasswords' ) ) {
 217                                         $result['reason'] .= ' To be able to login with action=login, see [[Special:BotPasswords]].';
 218                                         $result['reason'] .= ' To continue using main-account login, see action=clientlogin.';
 219                                 } else {
 220                                         $result['reason'] .= ' To log in, see action=clientlogin.';
 221                                 }
 222                                 break;
 223
 224                         default:
 225                                 ApiBase::dieDebug( __METHOD__, "Unhandled case value: {$authRes}" );
 226                 }
 227
 228                 $this->getResult()->addValue( null, 'login', $result );
 229
 230                 if ( $loginType === 'LoginForm' && isset( LoginForm::$statusCodes[$authRes] ) ) {
 231                         $authRes = LoginForm::$statusCodes[$authRes];
 232                 }
 233                 LoggerFactory::getInstance( 'authevents' )->info( 'Login attempt', [
 234                         'event' => 'login',
 235                         'successful' => $authRes === 'Success',
 236                         'loginType' => $loginType,
 237                         'status' => $authRes,
 238                 ] );
 239         }
 240
 241         public function isDeprecated() {
 242                 return !$this->getConfig()->get( 'EnableBotPasswords' );
 243         }
 244
 245         public function mustBePosted() {
 246                 return true;
 247         }
 248
 249         public function isReadMode() {
 250                 return false;
 251         }
 252
 253         public function getAllowedParams() {
 254                 return [
 255                         'name' => null,
 256                         'password' => [
 257                                 ApiBase::PARAM_TYPE => 'password',
 258                         ],
 259                         'domain' => null,
 260                         'token' => [
 261                                 ApiBase::PARAM_TYPE => 'string',
 262                                 ApiBase::PARAM_REQUIRED => false, // for BC
 263                                 ApiBase::PARAM_HELP_MSG => [ 'api-help-param-token', 'login' ],
 264                         ],
 265                 ];
 266         }
 267
 268         protected function getExamplesMessages() {
 269                 return [
 270                         'action=login&lgname=user&lgpassword=password'
 271                                 => 'apihelp-login-example-gettoken',
 272                         'action=login&lgname=user&lgpassword=password&lgtoken=123ABC'
 273                                 => 'apihelp-login-example-login',
 274                 ];
 275         }
 276
 277         public function getHelpUrls() {
 278                 return 'https://www.mediawiki.org/wiki/API:Login';
 279         }
 280
 281         /**
 282          * Turns an AuthenticationResponse into a hash suitable for passing to Logger
 283          * @param AuthenticationResponse $response
 284          * @return array
 285          */
 286         protected function getAuthenticationResponseLogData( AuthenticationResponse $response ) {
 287                 $ret = [
 288                         'status' => $response->status,
 289                 ];
 290                 if ( $response->message ) {
 291                         $ret['message'] = $response->message->inLanguage( 'en' )->plain();
 292                 };
 293                 $reqs = [
 294                         'neededRequests' => $response->neededRequests,
 295                         'createRequest' => $response->createRequest,
 296                         'linkRequest' => $response->linkRequest,
 297                 ];
 298                 foreach ( $reqs as $k => $v ) {
 299                         if ( $v ) {
 300                                 $v = is_array( $v ) ? $v : [ $v ];
 301                                 $reqClasses = array_unique( array_map( 'get_class', $v ) );
 302                                 sort( $reqClasses );
 303                                 $ret[$k] = implode( ', ', $reqClasses );
 304                         }
 305                 }
 306                 return $ret;
 307         }
 308 }