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