includes/api/ApiQueryAllUsers.php

   1 <?php
   2 /**
   3  *
   4  *
   5  * Created on July 7, 2007
   6  *
   7  * Copyright © 2007 Yuri Astrakhan <Firstname><Lastname>@gmail.com
   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 /**
  28  * Query module to enumerate all registered users.
  29  *
  30  * @ingroup API
  31  */
  32 class ApiQueryAllUsers extends ApiQueryBase {
  33         public function __construct( $query, $moduleName ) {
  34                 parent::__construct( $query, $moduleName, 'au' );
  35         }
  36
  37         /**
  38          * This function converts the user name to a canonical form
  39          * which is stored in the database.
  40          * @param String $name
  41          * @return String
  42          */
  43         private function getCanonicalUserName( $name ) {
  44                 return str_replace( '_', ' ', $name );
  45         }
  46
  47         public function execute() {
  48                 $db = $this->getDB();
  49                 $params = $this->extractRequestParams();
  50
  51                 $prop = $params['prop'];
  52                 if ( !is_null( $prop ) ) {
  53                         $prop = array_flip( $prop );
  54                         $fld_blockinfo = isset( $prop['blockinfo'] );
  55                         $fld_editcount = isset( $prop['editcount'] );
  56                         $fld_groups = isset( $prop['groups'] );
  57                         $fld_rights = isset( $prop['rights'] );
  58                         $fld_registration = isset( $prop['registration'] );
  59                         $fld_implicitgroups = isset( $prop['implicitgroups'] );
  60                 } else {
  61                         $fld_blockinfo = $fld_editcount = $fld_groups = $fld_registration = $fld_rights = $fld_implicitgroups = false;
  62                 }
  63
  64                 $limit = $params['limit'];
  65
  66                 $this->addTables( 'user' );
  67                 $useIndex = true;
  68
  69                 $dir = ( $params['dir'] == 'descending' ? 'older' : 'newer' );
  70                 $from = is_null( $params['from'] ) ? null : $this->getCanonicalUserName( $params['from'] );
  71                 $to = is_null( $params['to'] ) ? null : $this->getCanonicalUserName( $params['to'] );
  72
  73                 # MySQL doesn't seem to use 'equality propagation' here, so like the
  74                 # ActiveUsers special page, we have to use rc_user_text for some cases.
  75                 $userFieldToSort = $params['activeusers'] ? 'rc_user_text' : 'user_name';
  76
  77                 $this->addWhereRange( $userFieldToSort, $dir, $from, $to );
  78
  79                 if ( !is_null( $params['prefix'] ) ) {
  80                         $this->addWhere( $userFieldToSort .
  81                                 $db->buildLike( $this->getCanonicalUserName( $params['prefix'] ), $db->anyString() ) );
  82                 }
  83
  84                 if ( !is_null( $params['rights'] ) ) {
  85                         $groups = array();
  86                         foreach( $params['rights'] as $r ) {
  87                                 $groups = array_merge( $groups, User::getGroupsWithPermission( $r ) );
  88                         }
  89
  90                         $groups = array_unique( $groups );
  91
  92                         if ( is_null( $params['group'] ) ) {
  93                                 $params['group'] = $groups;
  94                         } else {
  95                                 $params['group'] = array_unique( array_merge( $params['group'], $groups ) );
  96                         }
  97                 }
  98
  99                 if ( !is_null( $params['group'] ) && !is_null( $params['excludegroup'] ) ) {
 100                         $this->dieUsage( 'group and excludegroup cannot be used together', 'group-excludegroup' );
 101                 }
 102
 103                 if ( !is_null( $params['group'] ) && count( $params['group'] ) ) {
 104                         $useIndex = false;
 105                         // Filter only users that belong to a given group
 106                         $this->addTables( 'user_groups', 'ug1' );
 107                         $this->addJoinConds( array( 'ug1' => array( 'INNER JOIN', array( 'ug1.ug_user=user_id',
 108                                         'ug1.ug_group' => $params['group'] ) ) ) );
 109                 }
 110
 111                 if ( !is_null( $params['excludegroup'] ) && count( $params['excludegroup'] ) ) {
 112                         $useIndex = false;
 113                         // Filter only users don't belong to a given group
 114                         $this->addTables( 'user_groups', 'ug1' );
 115
 116                         if ( count( $params['excludegroup'] ) == 1 ) {
 117                                 $exclude = array( 'ug1.ug_group' => $params['excludegroup'][0] );
 118                         } else {
 119                                 $exclude = array( $db->makeList( array( 'ug1.ug_group' => $params['excludegroup'] ), LIST_OR ) );
 120                         }
 121                         $this->addJoinConds( array( 'ug1' => array( 'LEFT OUTER JOIN',
 122                                 array_merge( array( 'ug1.ug_user=user_id' ), $exclude )
 123                                 )
 124                         ) );
 125                         $this->addWhere( 'ug1.ug_user IS NULL' );
 126                 }
 127
 128                 if ( $params['witheditsonly'] ) {
 129                         $this->addWhere( 'user_editcount > 0' );
 130                 }
 131
 132                 $this->showHiddenUsersAddBlockInfo( $fld_blockinfo );
 133
 134                 if ( $fld_groups || $fld_rights ) {
 135                         // Show the groups the given users belong to
 136                         // request more than needed to avoid not getting all rows that belong to one user
 137                         $groupCount = count( User::getAllGroups() );
 138                         $sqlLimit = $limit + $groupCount + 1;
 139
 140                         $this->addTables( 'user_groups', 'ug2' );
 141                         $this->addJoinConds( array( 'ug2' => array( 'LEFT JOIN', 'ug2.ug_user=user_id' ) ) );
 142                         $this->addFields( 'ug2.ug_group ug_group2' );
 143                 } else {
 144                         $sqlLimit = $limit + 1;
 145                 }
 146
 147                 if ( $params['activeusers'] ) {
 148                         global $wgActiveUserDays;
 149                         $this->addTables( 'recentchanges' );
 150
 151                         $this->addJoinConds( array( 'recentchanges' => array(
 152                                 'INNER JOIN', 'rc_user_text=user_name'
 153                         ) ) );
 154
 155                         $this->addFields( 'COUNT(*) AS recentedits' );
 156
 157                         $this->addWhere( "rc_log_type IS NULL OR rc_log_type != 'newusers'" );
 158                         $timestamp = $db->timestamp( wfTimestamp( TS_UNIX ) - $wgActiveUserDays*24*3600 );
 159                         $this->addWhere( "rc_timestamp >= {$db->addQuotes( $timestamp )}" );
 160
 161                         $this->addOption( 'GROUP BY', $userFieldToSort );
 162                 }
 163
 164                 $this->addOption( 'LIMIT', $sqlLimit );
 165
 166                 $this->addFields( array(
 167                         'user_name',
 168                         'user_id'
 169                 ) );
 170                 $this->addFieldsIf( 'user_editcount', $fld_editcount );
 171                 $this->addFieldsIf( 'user_registration', $fld_registration );
 172
 173                 if ( $useIndex ) {
 174                         $this->addOption( 'USE INDEX', array( 'user' => 'user_name' ) );
 175                 }
 176
 177                 $res = $this->select( __METHOD__ );
 178
 179                 $count = 0;
 180                 $lastUserData = false;
 181                 $lastUser = false;
 182                 $result = $this->getResult();
 183
 184                 //
 185                 // This loop keeps track of the last entry.
 186                 // For each new row, if the new row is for different user then the last, the last entry is added to results.
 187                 // Otherwise, the group of the new row is appended to the last entry.
 188                 // The setContinue... is more complex because of this, and takes into account the higher sql limit
 189                 // to make sure all rows that belong to the same user are received.
 190
 191                 foreach ( $res as $row ) {
 192                         $count++;
 193
 194                         if ( $lastUser !== $row->user_name ) {
 195                                 // Save the last pass's user data
 196                                 if ( is_array( $lastUserData ) ) {
 197                                         $fit = $result->addValue( array( 'query', $this->getModuleName() ),
 198                                                         null, $lastUserData );
 199
 200                                         $lastUserData = null;
 201
 202                                         if ( !$fit ) {
 203                                                 $this->setContinueEnumParameter( 'from', $lastUserData['name'] );
 204                                                 break;
 205                                         }
 206                                 }
 207
 208                                 if ( $count > $limit ) {
 209                                         // We've reached the one extra which shows that there are additional pages to be had. Stop here...
 210                                         $this->setContinueEnumParameter( 'from', $row->user_name );
 211                                         break;
 212                                 }
 213
 214                                 // Record new user's data
 215                                 $lastUser = $row->user_name;
 216                                 $lastUserData = array(
 217                                         'userid' => $row->user_id,
 218                                         'name' => $lastUser,
 219                                 );
 220                                 if ( $fld_blockinfo && !is_null( $row->ipb_by_text ) ) {
 221                                         $lastUserData['blockedby'] = $row->ipb_by_text;
 222                                         $lastUserData['blockreason'] = $row->ipb_reason;
 223                                         $lastUserData['blockexpiry'] = $row->ipb_expiry;
 224                                 }
 225                                 if ( $row->ipb_deleted ) {
 226                                         $lastUserData['hidden'] = '';
 227                                 }
 228                                 if ( $fld_editcount ) {
 229                                         $lastUserData['editcount'] = intval( $row->user_editcount );
 230                                 }
 231                                 if ( $params['activeusers'] ) {
 232                                         $lastUserData['recenteditcount'] = intval( $row->recentedits );
 233                                 }
 234                                 if ( $fld_registration ) {
 235                                         $lastUserData['registration'] = $row->user_registration ?
 236                                                 wfTimestamp( TS_ISO_8601, $row->user_registration ) : '';
 237                                 }
 238                         }
 239
 240                         if ( $sqlLimit == $count ) {
 241                                 // BUG!  database contains group name that User::getAllGroups() does not return
 242                                 // TODO: should handle this more gracefully
 243                                 ApiBase::dieDebug( __METHOD__,
 244                                         'MediaWiki configuration error: the database contains more user groups than known to User::getAllGroups() function' );
 245                         }
 246
 247                         $lastUserObj = User::newFromId( $row->user_id );
 248
 249                         // Add user's group info
 250                         if ( $fld_groups ) {
 251                                 if ( !isset( $lastUserData['groups'] ) ) {
 252                                         if ( $lastUserObj ) {
 253                                                 $lastUserData['groups'] = ApiQueryUsers::getAutoGroups( $lastUserObj );
 254                                         } else {
 255                                                 // This should not normally happen
 256                                                 $lastUserData['groups'] = array();
 257                                         }
 258                                 }
 259
 260                                 if ( !is_null( $row->ug_group2 ) ) {
 261                                         $lastUserData['groups'][] = $row->ug_group2;
 262                                 }
 263
 264                                 $result->setIndexedTagName( $lastUserData['groups'], 'g' );
 265                         }
 266
 267                         if ( $fld_implicitgroups && !isset( $lastUserData['implicitgroups'] ) && $lastUserObj ) {
 268                                 $lastUserData['implicitgroups'] = ApiQueryUsers::getAutoGroups( $lastUserObj );
 269                                 $result->setIndexedTagName( $lastUserData['implicitgroups'], 'g' );
 270                         }
 271                         if ( $fld_rights ) {
 272                                 if ( !isset( $lastUserData['rights'] ) ) {
 273                                         if ( $lastUserObj ) {
 274                                                 $lastUserData['rights'] =  User::getGroupPermissions( $lastUserObj->getAutomaticGroups() );
 275                                         } else {
 276                                                 // This should not normally happen
 277                                                 $lastUserData['rights'] = array();
 278                                         }
 279                                 }
 280
 281                                 if ( !is_null( $row->ug_group2 ) ) {
 282                                         $lastUserData['rights'] = array_unique( array_merge( $lastUserData['rights'],
 283                                                 User::getGroupPermissions( array( $row->ug_group2 ) ) ) );
 284                                 }
 285
 286                                 $result->setIndexedTagName( $lastUserData['rights'], 'r' );
 287                         }
 288                 }
 289
 290                 if ( is_array( $lastUserData ) ) {
 291                         $fit = $result->addValue( array( 'query', $this->getModuleName() ),
 292                                 null, $lastUserData );
 293                         if ( !$fit ) {
 294                                 $this->setContinueEnumParameter( 'from', $lastUserData['name'] );
 295                         }
 296                 }
 297
 298                 $result->setIndexedTagName_internal( array( 'query', $this->getModuleName() ), 'u' );
 299         }
 300
 301         public function getCacheMode( $params ) {
 302                 return 'anon-public-user-private';
 303         }
 304
 305         public function getAllowedParams() {
 306                 $userGroups = User::getAllGroups();
 307                 return array(
 308                         'from' => null,
 309                         'to' => null,
 310                         'prefix' => null,
 311                         'dir' => array(
 312                                 ApiBase::PARAM_DFLT => 'ascending',
 313                                 ApiBase::PARAM_TYPE => array(
 314                                         'ascending',
 315                                         'descending'
 316                                 ),
 317                         ),
 318                         'group' => array(
 319                                 ApiBase::PARAM_TYPE => $userGroups,
 320                                 ApiBase::PARAM_ISMULTI => true,
 321                         ),
 322                         'excludegroup' => array(
 323                                 ApiBase::PARAM_TYPE => $userGroups,
 324                                 ApiBase::PARAM_ISMULTI => true,
 325                         ),
 326                         'rights' => array(
 327                                 ApiBase::PARAM_TYPE => User::getAllRights(),
 328                                 ApiBase::PARAM_ISMULTI => true,
 329                         ),
 330                         'prop' => array(
 331                                 ApiBase::PARAM_ISMULTI => true,
 332                                 ApiBase::PARAM_TYPE => array(
 333                                         'blockinfo',
 334                                         'groups',
 335                                         'implicitgroups',
 336                                         'rights',
 337                                         'editcount',
 338                                         'registration'
 339                                 )
 340                         ),
 341                         'limit' => array(
 342                                 ApiBase::PARAM_DFLT => 10,
 343                                 ApiBase::PARAM_TYPE => 'limit',
 344                                 ApiBase::PARAM_MIN => 1,
 345                                 ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
 346                                 ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
 347                         ),
 348                         'witheditsonly' => false,
 349                         'activeusers' => false,
 350                 );
 351         }
 352
 353         public function getParamDescription() {
 354                 global $wgActiveUserDays;
 355                 return array(
 356                         'from' => 'The user name to start enumerating from',
 357                         'to' => 'The user name to stop enumerating at',
 358                         'prefix' => 'Search for all users that begin with this value',
 359                         'dir' => 'Direction to sort in',
 360                         'group' => 'Limit users to given group name(s)',
 361                         'excludegroup' => 'Exclude users in given group name(s)',
 362                         'rights' => 'Limit users to given right(s)',
 363                         'prop' => array(
 364                                 'What pieces of information to include.',
 365                                 ' blockinfo      - Adds the information about a current block on the user',
 366                                 ' groups         - Lists groups that the user is in. This uses more server resources and may return fewer results than the limit',
 367                                 ' implicitgroups - Lists all the groups the user is automatically in',
 368                                 ' rights         - Lists rights that the user has',
 369                                 ' editcount      - Adds the edit count of the user',
 370                                 ' registration   - Adds the timestamp of when the user registered if available (may be blank)',
 371                                 ),
 372                         'limit' => 'How many total user names to return',
 373                         'witheditsonly' => 'Only list users who have made edits',
 374                         'activeusers' => "Only list users active in the last {$wgActiveUserDays} days(s)"
 375                 );
 376         }
 377
 378         public function getDescription() {
 379                 return 'Enumerate all registered users';
 380         }
 381
 382         public function getPossibleErrors() {
 383                 return array_merge( parent::getPossibleErrors(), array(
 384                         array( 'code' => 'group-excludegroup', 'info' => 'group and excludegroup cannot be used together' ),
 385                 ) );
 386         }
 387
 388         public function getExamples() {
 389                 return array(
 390                         'api.php?action=query&list=allusers&aufrom=Y',
 391                 );
 392         }
 393
 394         public function getHelpUrls() {
 395                 return 'https://www.mediawiki.org/wiki/API:Allusers';
 396         }
 397
 398         public function getVersion() {
 399                 return __CLASS__ . ': $Id$';
 400         }
 401 }