includes/api/ApiQueryUsers.php

   1 <?php
   2 /**
   3  * API for MediaWiki 1.8+
   4  *
   5  * Created on July 30, 2007
   6  *
   7  * Copyright © 2007 Roan Kattouw <Firstname>.<Lastname>@home.nl
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write to the Free Software Foundation, Inc.,
  21  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  22  * http://www.gnu.org/copyleft/gpl.html
  23  *
  24  * @file
  25  */
  26
  27 if ( !defined( 'MEDIAWIKI' ) ) {
  28         // Eclipse helper - will be ignored in production
  29         require_once( 'ApiQueryBase.php' );
  30 }
  31
  32 /**
  33  * Query module to get information about a list of users
  34  *
  35  * @ingroup API
  36  */
  37  class ApiQueryUsers extends ApiQueryBase {
  38
  39         private $tokenFunctions;
  40
  41         public function __construct( $query, $moduleName ) {
  42                 parent::__construct( $query, $moduleName, 'us' );
  43         }
  44
  45         /**
  46          * Get an array mapping token names to their handler functions.
  47          * The prototype for a token function is func($user)
  48          * it should return a token or false (permission denied)
  49          * @return array(tokenname => function)
  50          */
  51         protected function getTokenFunctions() {
  52                 // Don't call the hooks twice
  53                 if ( isset( $this->tokenFunctions ) ) {
  54                         return $this->tokenFunctions;
  55                 }
  56
  57                 // If we're in JSON callback mode, no tokens can be obtained
  58                 if ( !is_null( $this->getMain()->getRequest()->getVal( 'callback' ) ) ) {
  59                         return array();
  60                 }
  61
  62                 $this->tokenFunctions = array(
  63                         'userrights' => array( 'ApiQueryUsers', 'getUserrightsToken' ),
  64                 );
  65                 wfRunHooks( 'APIQueryUsersTokens', array( &$this->tokenFunctions ) );
  66                 return $this->tokenFunctions;
  67         }
  68
  69         public static function getUserrightsToken( $user ) {
  70                 global $wgUser;
  71                 // Since the permissions check for userrights is non-trivial,
  72                 // don't bother with it here
  73                 return $wgUser->editToken( $user->getName() );
  74         }
  75
  76         public function execute() {
  77                 $params = $this->extractRequestParams();
  78
  79                 if ( !is_null( $params['prop'] ) ) {
  80                         $this->prop = array_flip( $params['prop'] );
  81                 } else {
  82                         $this->prop = array();
  83                 }
  84
  85                 $users = (array)$params['users'];
  86                 $goodNames = $done = array();
  87                 $result = $this->getResult();
  88                 // Canonicalize user names
  89                 foreach ( $users as $u ) {
  90                         $n = User::getCanonicalName( $u );
  91                         if ( $n === false || $n === '' ) {
  92                                 $vals = array( 'name' => $u, 'invalid' => '' );
  93                                 $fit = $result->addValue( array( 'query', $this->getModuleName() ),
  94                                                 null, $vals );
  95                                 if ( !$fit ) {
  96                                         $this->setContinueEnumParameter( 'users',
  97                                                         implode( '|', array_diff( $users, $done ) ) );
  98                                         $goodNames = array();
  99                                         break;
 100                                 }
 101                                 $done[] = $u;
 102                         } else {
 103                                 $goodNames[] = $n;
 104                         }
 105                 }
 106
 107                 if ( count( $goodNames ) ) {
 108                         $this->addTables( 'user', 'u1' );
 109                         $this->addFields( 'u1.*' );
 110                         $this->addWhereFld( 'u1.user_name', $goodNames );
 111
 112                         if ( isset( $this->prop['groups'] ) ) {
 113                                 $this->addTables( 'user_groups' );
 114                                 $this->addJoinConds( array( 'user_groups' => array( 'LEFT JOIN', 'ug_user=u1.user_id' ) ) );
 115                                 $this->addFields( 'ug_group' );
 116                         }
 117                         if ( isset( $this->prop['blockinfo'] ) ) {
 118                                 $this->addTables( 'ipblocks' );
 119                                 $this->addTables( 'user', 'u2' );
 120                                 $u2 = $this->getAliasedName( 'user', 'u2' );
 121                                 $this->addJoinConds( array(
 122                                         'ipblocks' => array( 'LEFT JOIN', 'ipb_user=u1.user_id' ),
 123                                         $u2 => array( 'LEFT JOIN', 'ipb_by=u2.user_id' ) ) );
 124                                 $this->addFields( array( 'ipb_reason', 'u2.user_name AS blocker_name' ) );
 125                         }
 126
 127                         $data = array();
 128                         $res = $this->select( __METHOD__ );
 129                         foreach ( $res as $row ) {
 130                                 $user = User::newFromRow( $row );
 131                                 $name = $user->getName();
 132                                 $data[$name]['name'] = $name;
 133
 134                                 if ( isset( $this->prop['editcount'] ) ) {
 135                                         $data[$name]['editcount'] = intval( $user->getEditCount() );
 136                                 }
 137
 138                                 if ( isset( $this->prop['registration'] ) ) {
 139                                         $data[$name]['registration'] = wfTimestampOrNull( TS_ISO_8601, $user->getRegistration() );
 140                                 }
 141
 142                                 if ( isset( $this->prop['groups'] ) && !is_null( $row->ug_group ) ) {
 143                                         // This row contains only one group, others will be added from other rows
 144                                         $data[$name]['groups'][] = $row->ug_group;
 145                                 }
 146
 147                                 if ( isset( $this->prop['blockinfo'] ) && !is_null( $row->blocker_name ) ) {
 148                                         $data[$name]['blockedby'] = $row->blocker_name;
 149                                         $data[$name]['blockreason'] = $row->ipb_reason;
 150                                 }
 151
 152                                 if ( isset( $this->prop['emailable'] ) && $user->canReceiveEmail() ) {
 153                                         $data[$name]['emailable'] = '';
 154                                 }
 155
 156                                 if ( isset( $this->prop['gender'] ) ) {
 157                                         $gender = $user->getOption( 'gender' );
 158                                         if ( strval( $gender ) === '' ) {
 159                                                 $gender = 'unknown';
 160                                         }
 161                                         $data[$name]['gender'] = $gender;
 162                                 }
 163
 164                                 if ( !is_null( $params['token'] ) ) {
 165                                         $tokenFunctions = $this->getTokenFunctions();
 166                                         foreach ( $params['token'] as $t ) {
 167                                                 $val = call_user_func( $tokenFunctions[$t], $user );
 168                                                 if ( $val === false ) {
 169                                                         $this->setWarning( "Action '$t' is not allowed for the current user" );
 170                                                 } else {
 171                                                         $data[$name][$t . 'token'] = $val;
 172                                                 }
 173                                         }
 174                                 }
 175                         }
 176                 }
 177                 // Second pass: add result data to $retval
 178                 foreach ( $goodNames as $u ) {
 179                         if ( !isset( $data[$u] ) ) {
 180                                 $data[$u] = array( 'name' => $u );
 181                                 $urPage = new UserrightsPage;
 182                                 $iwUser = $urPage->fetchUser( $u );
 183
 184                                 if ( $iwUser instanceof UserRightsProxy ) {
 185                                         $data[$u]['interwiki'] = '';
 186
 187                                         if ( !is_null( $params['token'] ) ) {
 188                                                 $tokenFunctions = $this->getTokenFunctions();
 189
 190                                                 foreach ( $params['token'] as $t ) {
 191                                                         $val = call_user_func( $tokenFunctions[$t], $iwUser );
 192                                                         if ( $val === false ) {
 193                                                                 $this->setWarning( "Action '$t' is not allowed for the current user" );
 194                                                         } else {
 195                                                                 $data[$u][$t . 'token'] = $val;
 196                                                         }
 197                                                 }
 198                                         }
 199                                 } else {
 200                                         $data[$u]['missing'] = '';
 201                                 }
 202                         } else {
 203                                 if ( isset( $this->prop['groups'] ) && isset( $data[$u]['groups'] ) ) {
 204                                         $autolist = ApiQueryUsers::getAutoGroups( User::newFromName( $u ) );
 205
 206                                         $data[$u]['groups'] = array_merge( $autolist, $data[$u]['groups'] );
 207
 208                                         $this->getResult()->setIndexedTagName( $data[$u]['groups'], 'g' );
 209                                 }
 210                         }
 211                         $fit = $result->addValue( array( 'query', $this->getModuleName() ),
 212                                         null, $data[$u] );
 213                         if ( !$fit ) {
 214                                 $this->setContinueEnumParameter( 'users',
 215                                                 implode( '|', array_diff( $users, $done ) ) );
 216                                 break;
 217                         }
 218                         $done[] = $u;
 219                 }
 220                 return $this->getResult()->setIndexedTagName_internal( array( 'query', $this->getModuleName() ), 'user' );
 221         }
 222
 223         /**
 224         * Gets all the groups that a user is automatically a member of
 225         * @return array
 226         */
 227         public static function getAutoGroups( $user ) {
 228                 $groups = array( '*' );
 229
 230                 if ( !$user->isAnon() ) {
 231                         $groups[] = 'user';
 232                 }
 233
 234                 return array_merge( $groups, Autopromote::getAutopromoteGroups( $user ) );
 235         }
 236
 237         public function getCacheMode( $params ) {
 238                 if ( isset( $params['token'] ) ) {
 239                         return 'private';
 240                 } else {
 241                         return 'public';
 242                 }
 243         }
 244
 245         public function getAllowedParams() {
 246                 return array(
 247                         'prop' => array(
 248                                 ApiBase::PARAM_DFLT => null,
 249                                 ApiBase::PARAM_ISMULTI => true,
 250                                 ApiBase::PARAM_TYPE => array(
 251                                         'blockinfo',
 252                                         'groups',
 253                                         'editcount',
 254                                         'registration',
 255                                         'emailable',
 256                                         'gender',
 257                                 )
 258                         ),
 259                         'users' => array(
 260                                 ApiBase::PARAM_ISMULTI => true
 261                         ),
 262                         'token' => array(
 263                                 ApiBase::PARAM_TYPE => array_keys( $this->getTokenFunctions() ),
 264                                 ApiBase::PARAM_ISMULTI => true
 265                         ),
 266                 );
 267         }
 268
 269         public function getParamDescription() {
 270                 return array(
 271                         'prop' => array(
 272                                 'What pieces of information to include',
 273                                 '  blockinfo    - tags if the user is blocked, by whom, and for what reason',
 274                                 '  groups       - lists all the groups the user belongs to',
 275                                 '  editcount    - adds the user\'s edit count',
 276                                 '  registration - adds the user\'s registration timestamp',
 277                                 '  emailable    - tags if the user can and wants to receive e-mail through [[Special:Emailuser]]',
 278                                 '  gender       - tags the gender of the user. Returns "male", "female", or "unknown"',
 279                         ),
 280                         'users' => 'A list of users to obtain the same information for',
 281                         'token' => 'Which tokens to obtain for each user',
 282                 );
 283         }
 284
 285         public function getDescription() {
 286                 return 'Get information about a list of users';
 287         }
 288
 289         protected function getExamples() {
 290                 return 'api.php?action=query&list=users&ususers=brion|TimStarling&usprop=groups|editcount|gender';
 291         }
 292
 293         public function getVersion() {
 294                 return __CLASS__ . ': $Id$';
 295         }
 296 }