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( ApiQuery $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                 $params = $this->extractRequestParams();
  49                 $activeUserDays = $this->getConfig()->get( 'ActiveUserDays' );
  50
  51                 if ( $params['activeusers'] ) {
  52                         // Update active user cache
  53                         SpecialActiveUsers::mergeActiveUsers( 600, $activeUserDays );
  54                 }
  55
  56                 $db = $this->getDB();
  57
  58                 $prop = $params['prop'];
  59                 if ( !is_null( $prop ) ) {
  60                         $prop = array_flip( $prop );
  61                         $fld_blockinfo = isset( $prop['blockinfo'] );
  62                         $fld_editcount = isset( $prop['editcount'] );
  63                         $fld_groups = isset( $prop['groups'] );
  64                         $fld_rights = isset( $prop['rights'] );
  65                         $fld_registration = isset( $prop['registration'] );
  66                         $fld_implicitgroups = isset( $prop['implicitgroups'] );
  67                 } else {
  68                         $fld_blockinfo = $fld_editcount = $fld_groups = $fld_registration =
  69                                 $fld_rights = $fld_implicitgroups = false;
  70                 }
  71
  72                 $limit = $params['limit'];
  73
  74                 $this->addTables( 'user' );
  75                 $useIndex = true;
  76
  77                 $dir = ( $params['dir'] == 'descending' ? 'older' : 'newer' );
  78                 $from = is_null( $params['from'] ) ? null : $this->getCanonicalUserName( $params['from'] );
  79                 $to = is_null( $params['to'] ) ? null : $this->getCanonicalUserName( $params['to'] );
  80
  81                 # MySQL can't figure out that 'user_name' and 'qcc_title' are the same
  82                 # despite the JOIN condition, so manually sort on the correct one.
  83                 $userFieldToSort = $params['activeusers'] ? 'qcc_title' : 'user_name';
  84
  85                 $this->addWhereRange( $userFieldToSort, $dir, $from, $to );
  86
  87                 if ( !is_null( $params['prefix'] ) ) {
  88                         $this->addWhere( $userFieldToSort .
  89                                 $db->buildLike( $this->getCanonicalUserName( $params['prefix'] ), $db->anyString() ) );
  90                 }
  91
  92                 if ( !is_null( $params['rights'] ) && count( $params['rights'] ) ) {
  93                         $groups = array();
  94                         foreach ( $params['rights'] as $r ) {
  95                                 $groups = array_merge( $groups, User::getGroupsWithPermission( $r ) );
  96                         }
  97
  98                         // no group with the given right(s) exists, no need for a query
  99                         if ( !count( $groups ) ) {
 100                                 $this->getResult()->setIndexedTagName_internal( array( 'query', $this->getModuleName() ), '' );
 101
 102                                 return;
 103                         }
 104
 105                         $groups = array_unique( $groups );
 106
 107                         if ( is_null( $params['group'] ) ) {
 108                                 $params['group'] = $groups;
 109                         } else {
 110                                 $params['group'] = array_unique( array_merge( $params['group'], $groups ) );
 111                         }
 112                 }
 113
 114                 if ( !is_null( $params['group'] ) && !is_null( $params['excludegroup'] ) ) {
 115                         $this->dieUsage( 'group and excludegroup cannot be used together', 'group-excludegroup' );
 116                 }
 117
 118                 if ( !is_null( $params['group'] ) && count( $params['group'] ) ) {
 119                         $useIndex = false;
 120                         // Filter only users that belong to a given group
 121                         $this->addTables( 'user_groups', 'ug1' );
 122                         $this->addJoinConds( array( 'ug1' => array( 'INNER JOIN', array( 'ug1.ug_user=user_id',
 123                                 'ug1.ug_group' => $params['group'] ) ) ) );
 124                 }
 125
 126                 if ( !is_null( $params['excludegroup'] ) && count( $params['excludegroup'] ) ) {
 127                         $useIndex = false;
 128                         // Filter only users don't belong to a given group
 129                         $this->addTables( 'user_groups', 'ug1' );
 130
 131                         if ( count( $params['excludegroup'] ) == 1 ) {
 132                                 $exclude = array( 'ug1.ug_group' => $params['excludegroup'][0] );
 133                         } else {
 134                                 $exclude = array( $db->makeList(
 135                                         array( 'ug1.ug_group' => $params['excludegroup'] ),
 136                                         LIST_OR
 137                                 ) );
 138                         }
 139                         $this->addJoinConds( array( 'ug1' => array( 'LEFT OUTER JOIN',
 140                                 array_merge( array( 'ug1.ug_user=user_id' ), $exclude )
 141                         ) ) );
 142                         $this->addWhere( 'ug1.ug_user IS NULL' );
 143                 }
 144
 145                 if ( $params['witheditsonly'] ) {
 146                         $this->addWhere( 'user_editcount > 0' );
 147                 }
 148
 149                 $this->showHiddenUsersAddBlockInfo( $fld_blockinfo );
 150
 151                 if ( $fld_groups || $fld_rights ) {
 152                         // Show the groups the given users belong to
 153                         // request more than needed to avoid not getting all rows that belong to one user
 154                         $groupCount = count( User::getAllGroups() );
 155                         $sqlLimit = $limit + $groupCount + 1;
 156
 157                         $this->addTables( 'user_groups', 'ug2' );
 158                         $this->addJoinConds( array( 'ug2' => array( 'LEFT JOIN', 'ug2.ug_user=user_id' ) ) );
 159                         $this->addFields( array( 'ug_group2' => 'ug2.ug_group' ) );
 160                 } else {
 161                         $sqlLimit = $limit + 1;
 162                 }
 163
 164                 if ( $params['activeusers'] ) {
 165                         $activeUserSeconds = $activeUserDays * 86400;
 166
 167                         // Filter query to only include users in the active users cache
 168                         $this->addTables( 'querycachetwo' );
 169                         $this->addJoinConds( array( 'querycachetwo' => array(
 170                                 'INNER JOIN', array(
 171                                         'qcc_type' => 'activeusers',
 172                                         'qcc_namespace' => NS_USER,
 173                                         'qcc_title=user_name',
 174                                 ),
 175                         ) ) );
 176
 177                         // Actually count the actions using a subquery (bug 64505 and bug 64507)
 178                         $timestamp = $db->timestamp( wfTimestamp( TS_UNIX ) - $activeUserSeconds );
 179                         $this->addFields( array(
 180                                 'recentactions' => '(' . $db->selectSQLText(
 181                                         'recentchanges',
 182                                         'COUNT(*)',
 183                                         array(
 184                                                 'rc_user_text = user_name',
 185                                                 'rc_type != ' . $db->addQuotes( RC_EXTERNAL ), // no wikidata
 186                                                 'rc_log_type IS NULL OR rc_log_type != ' . $db->addQuotes( 'newusers' ),
 187                                                 'rc_timestamp >= ' . $db->addQuotes( $timestamp ),
 188                                         )
 189                                 ) . ')'
 190                         ) );
 191                 }
 192
 193                 $this->addOption( 'LIMIT', $sqlLimit );
 194
 195                 $this->addFields( array(
 196                         'user_name',
 197                         'user_id'
 198                 ) );
 199                 $this->addFieldsIf( 'user_editcount', $fld_editcount );
 200                 $this->addFieldsIf( 'user_registration', $fld_registration );
 201
 202                 if ( $useIndex ) {
 203                         $this->addOption( 'USE INDEX', array( 'user' => 'user_name' ) );
 204                 }
 205
 206                 $res = $this->select( __METHOD__ );
 207
 208                 $count = 0;
 209                 $lastUserData = false;
 210                 $lastUser = false;
 211                 $result = $this->getResult();
 212
 213                 // This loop keeps track of the last entry. For each new row, if the
 214                 // new row is for different user then the last, the last entry is added
 215                 // to results. Otherwise, the group of the new row is appended to the
 216                 // last entry. The setContinue... is more complex because of this, and
 217                 // takes into account the higher sql limit to make sure all rows that
 218                 // belong to the same user are received.
 219
 220                 foreach ( $res as $row ) {
 221                         $count++;
 222
 223                         if ( $lastUser !== $row->user_name ) {
 224                                 // Save the last pass's user data
 225                                 if ( is_array( $lastUserData ) ) {
 226                                         if ( $params['activeusers'] && $lastUserData['recentactions'] === 0 ) {
 227                                                 // activeusers cache was out of date
 228                                                 $fit = true;
 229                                         } else {
 230                                                 $fit = $result->addValue( array( 'query', $this->getModuleName() ),
 231                                                         null, $lastUserData );
 232                                         }
 233
 234                                         $lastUserData = null;
 235
 236                                         if ( !$fit ) {
 237                                                 $this->setContinueEnumParameter( 'from', $lastUserData['name'] );
 238                                                 break;
 239                                         }
 240                                 }
 241
 242                                 if ( $count > $limit ) {
 243                                         // We've reached the one extra which shows that there are
 244                                         // additional pages to be had. Stop here...
 245                                         $this->setContinueEnumParameter( 'from', $row->user_name );
 246                                         break;
 247                                 }
 248
 249                                 // Record new user's data
 250                                 $lastUser = $row->user_name;
 251                                 $lastUserData = array(
 252                                         'userid' => $row->user_id,
 253                                         'name' => $lastUser,
 254                                 );
 255                                 if ( $fld_blockinfo && !is_null( $row->ipb_by_text ) ) {
 256                                         $lastUserData['blockid'] = $row->ipb_id;
 257                                         $lastUserData['blockedby'] = $row->ipb_by_text;
 258                                         $lastUserData['blockedbyid'] = $row->ipb_by;
 259                                         $lastUserData['blockreason'] = $row->ipb_reason;
 260                                         $lastUserData['blockexpiry'] = $row->ipb_expiry;
 261                                 }
 262                                 if ( $row->ipb_deleted ) {
 263                                         $lastUserData['hidden'] = '';
 264                                 }
 265                                 if ( $fld_editcount ) {
 266                                         $lastUserData['editcount'] = intval( $row->user_editcount );
 267                                 }
 268                                 if ( $params['activeusers'] ) {
 269                                         $lastUserData['recentactions'] = intval( $row->recentactions );
 270                                         // @todo 'recenteditcount' is set for BC, remove in 1.25
 271                                         $lastUserData['recenteditcount'] = $lastUserData['recentactions'];
 272                                 }
 273                                 if ( $fld_registration ) {
 274                                         $lastUserData['registration'] = $row->user_registration ?
 275                                                 wfTimestamp( TS_ISO_8601, $row->user_registration ) : '';
 276                                 }
 277                         }
 278
 279                         if ( $sqlLimit == $count ) {
 280                                 // @todo BUG!  database contains group name that User::getAllGroups() does not return
 281                                 // Should handle this more gracefully
 282                                 ApiBase::dieDebug(
 283                                         __METHOD__,
 284                                         'MediaWiki configuration error: The database contains more ' .
 285                                                 'user groups than known to User::getAllGroups() function'
 286                                 );
 287                         }
 288
 289                         $lastUserObj = User::newFromId( $row->user_id );
 290
 291                         // Add user's group info
 292                         if ( $fld_groups ) {
 293                                 if ( !isset( $lastUserData['groups'] ) ) {
 294                                         if ( $lastUserObj ) {
 295                                                 $lastUserData['groups'] = $lastUserObj->getAutomaticGroups();
 296                                         } else {
 297                                                 // This should not normally happen
 298                                                 $lastUserData['groups'] = array();
 299                                         }
 300                                 }
 301
 302                                 if ( !is_null( $row->ug_group2 ) ) {
 303                                         $lastUserData['groups'][] = $row->ug_group2;
 304                                 }
 305
 306                                 $result->setIndexedTagName( $lastUserData['groups'], 'g' );
 307                         }
 308
 309                         if ( $fld_implicitgroups && !isset( $lastUserData['implicitgroups'] ) && $lastUserObj ) {
 310                                 $lastUserData['implicitgroups'] = $lastUserObj->getAutomaticGroups();
 311                                 $result->setIndexedTagName( $lastUserData['implicitgroups'], 'g' );
 312                         }
 313                         if ( $fld_rights ) {
 314                                 if ( !isset( $lastUserData['rights'] ) ) {
 315                                         if ( $lastUserObj ) {
 316                                                 $lastUserData['rights'] = User::getGroupPermissions( $lastUserObj->getAutomaticGroups() );
 317                                         } else {
 318                                                 // This should not normally happen
 319                                                 $lastUserData['rights'] = array();
 320                                         }
 321                                 }
 322
 323                                 if ( !is_null( $row->ug_group2 ) ) {
 324                                         $lastUserData['rights'] = array_unique( array_merge( $lastUserData['rights'],
 325                                                 User::getGroupPermissions( array( $row->ug_group2 ) ) ) );
 326                                 }
 327
 328                                 $result->setIndexedTagName( $lastUserData['rights'], 'r' );
 329                         }
 330                 }
 331
 332                 if ( is_array( $lastUserData ) &&
 333                         !( $params['activeusers'] && $lastUserData['recentactions'] === 0 )
 334                 ) {
 335                         $fit = $result->addValue( array( 'query', $this->getModuleName() ),
 336                                 null, $lastUserData );
 337                         if ( !$fit ) {
 338                                 $this->setContinueEnumParameter( 'from', $lastUserData['name'] );
 339                         }
 340                 }
 341
 342                 $result->setIndexedTagName_internal( array( 'query', $this->getModuleName() ), 'u' );
 343         }
 344
 345         public function getCacheMode( $params ) {
 346                 return 'anon-public-user-private';
 347         }
 348
 349         public function getAllowedParams() {
 350                 $userGroups = User::getAllGroups();
 351
 352                 return array(
 353                         'from' => null,
 354                         'to' => null,
 355                         'prefix' => null,
 356                         'dir' => array(
 357                                 ApiBase::PARAM_DFLT => 'ascending',
 358                                 ApiBase::PARAM_TYPE => array(
 359                                         'ascending',
 360                                         'descending'
 361                                 ),
 362                         ),
 363                         'group' => array(
 364                                 ApiBase::PARAM_TYPE => $userGroups,
 365                                 ApiBase::PARAM_ISMULTI => true,
 366                         ),
 367                         'excludegroup' => array(
 368                                 ApiBase::PARAM_TYPE => $userGroups,
 369                                 ApiBase::PARAM_ISMULTI => true,
 370                         ),
 371                         'rights' => array(
 372                                 ApiBase::PARAM_TYPE => User::getAllRights(),
 373                                 ApiBase::PARAM_ISMULTI => true,
 374                         ),
 375                         'prop' => array(
 376                                 ApiBase::PARAM_ISMULTI => true,
 377                                 ApiBase::PARAM_TYPE => array(
 378                                         'blockinfo',
 379                                         'groups',
 380                                         'implicitgroups',
 381                                         'rights',
 382                                         'editcount',
 383                                         'registration'
 384                                 )
 385                         ),
 386                         'limit' => array(
 387                                 ApiBase::PARAM_DFLT => 10,
 388                                 ApiBase::PARAM_TYPE => 'limit',
 389                                 ApiBase::PARAM_MIN => 1,
 390                                 ApiBase::PARAM_MAX => ApiBase::LIMIT_BIG1,
 391                                 ApiBase::PARAM_MAX2 => ApiBase::LIMIT_BIG2
 392                         ),
 393                         'witheditsonly' => false,
 394                         'activeusers' => false,
 395                 );
 396         }
 397
 398         public function getParamDescription() {
 399                 return array(
 400                         'from' => 'The user name to start enumerating from',
 401                         'to' => 'The user name to stop enumerating at',
 402                         'prefix' => 'Search for all users that begin with this value',
 403                         'dir' => 'Direction to sort in',
 404                         'group' => 'Limit users to given group name(s)',
 405                         'excludegroup' => 'Exclude users in given group name(s)',
 406                         'rights' => 'Limit users to given right(s) (does not include rights ' .
 407                                 'granted by implicit or auto-promoted groups like *, user, or autoconfirmed)',
 408                         'prop' => array(
 409                                 'What pieces of information to include.',
 410                                 ' blockinfo      - Adds the information about a current block on the user',
 411                                 ' groups         - Lists groups that the user is in. This uses ' .
 412                                         'more server resources and may return fewer results than the limit',
 413                                 ' implicitgroups - Lists all the groups the user is automatically in',
 414                                 ' rights         - Lists rights that the user has',
 415                                 ' editcount      - Adds the edit count of the user',
 416                                 ' registration   - Adds the timestamp of when the user registered if available (may be blank)',
 417                         ),
 418                         'limit' => 'How many total user names to return',
 419                         'witheditsonly' => 'Only list users who have made edits',
 420                         'activeusers' => "Only list users active in the last {$this->getConfig()->get( 'ActiveUserDays' )} days(s)"
 421                 );
 422         }
 423
 424         public function getDescription() {
 425                 return 'Enumerate all registered users.';
 426         }
 427
 428         public function getExamples() {
 429                 return array(
 430                         'api.php?action=query&list=allusers&aufrom=Y',
 431                 );
 432         }
 433
 434         public function getHelpUrls() {
 435                 return 'https://www.mediawiki.org/wiki/API:Allusers';
 436         }
 437 }