includes/specials/SpecialActiveusers.php

   1 <?php
   2 /**
   3  * Implements Special:Activeusers
   4  *
   5  * Copyright © 2008 Aaron Schulz
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  20  * http://www.gnu.org/copyleft/gpl.html
  21  *
  22  * @file
  23  * @ingroup SpecialPage
  24  */
  25
  26 /**
  27  * This class is used to get a list of active users. The ones with specials
  28  * rights (sysop, bureaucrat, developer) will have them displayed
  29  * next to their names.
  30  *
  31  * @ingroup SpecialPage
  32  */
  33 class ActiveUsersPager extends UsersPager {
  34         /**
  35          * @var FormOptions
  36          */
  37         protected $opts;
  38
  39         /**
  40          * @var array
  41          */
  42         protected $hideGroups = array();
  43
  44         /**
  45          * @var array
  46          */
  47         protected $hideRights = array();
  48
  49         /**
  50          * @param IContextSource $context
  51          * @param null $group Unused
  52          * @param string $par Parameter passed to the page
  53          */
  54         function __construct( IContextSource $context = null, $group = null, $par = null ) {
  55                 global $wgActiveUserDays;
  56
  57                 parent::__construct( $context );
  58
  59                 $this->RCMaxAge = $wgActiveUserDays;
  60                 $un = $this->getRequest()->getText( 'username', $par );
  61                 $this->requestedUser = '';
  62                 if ( $un != '' ) {
  63                         $username = Title::makeTitleSafe( NS_USER, $un );
  64                         if ( !is_null( $username ) ) {
  65                                 $this->requestedUser = $username->getText();
  66                         }
  67                 }
  68
  69                 $this->setupOptions();
  70         }
  71
  72         public function setupOptions() {
  73                 $this->opts = new FormOptions();
  74
  75                 $this->opts->add( 'hidebots', false, FormOptions::BOOL );
  76                 $this->opts->add( 'hidesysops', false, FormOptions::BOOL );
  77
  78                 $this->opts->fetchValuesFromRequest( $this->getRequest() );
  79
  80                 if ( $this->opts->getValue( 'hidebots' ) == 1 ) {
  81                         $this->hideRights[] = 'bot';
  82                 }
  83                 if ( $this->opts->getValue( 'hidesysops' ) == 1 ) {
  84                         $this->hideGroups[] = 'sysop';
  85                 }
  86         }
  87
  88         function getIndexField() {
  89                 return 'qcc_title';
  90         }
  91
  92         function getQueryInfo() {
  93                 $dbr = $this->getDatabase();
  94
  95                 $conds = array(
  96                         'qcc_type' => 'activeusers',
  97                         'qcc_namespace' => NS_USER,
  98                         'user_name = qcc_title',
  99                         'rc_user_text = qcc_title',
 100                         'rc_type != ' . $dbr->addQuotes( RC_EXTERNAL ) // Don't count wikidata.
 101                 );
 102                 if ( $this->requestedUser != '' ) {
 103                         $conds[] = 'qcc_title >= ' . $dbr->addQuotes( $this->requestedUser );
 104                 }
 105                 if ( !$this->getUser()->isAllowed( 'hideuser' ) ) {
 106                         $conds[] = 'NOT EXISTS (' . $dbr->selectSQLText(
 107                                 'ipblocks', '1', array( 'ipb_user=user_id', 'ipb_deleted' => 1 )
 108                         ) . ')';
 109                 }
 110
 111                 return array(
 112                         'tables' => array( 'querycachetwo', 'user', 'recentchanges' ),
 113                         'fields' => array( 'user_name', 'user_id', 'recentedits' => 'COUNT(*)', 'qcc_title' ),
 114                         'options' => array( 'GROUP BY' => array( 'qcc_title' ) ),
 115                         'conds' => $conds
 116                 );
 117         }
 118
 119         function doBatchLookups() {
 120                 $uids = array();
 121                 foreach ( $this->mResult as $row ) {
 122                         $uids[] = $row->user_id;
 123                 }
 124                 // Fetch the block status of the user for showing "(blocked)" text and for
 125                 // striking out names of suppressed users when privileged user views the list.
 126                 // Although the first query already hits the block table for un-privileged, this
 127                 // is done in two queries to avoid huge quicksorts and to make COUNT(*) correct.
 128                 $dbr = $this->getDatabase();
 129                 $res = $dbr->select( 'ipblocks',
 130                         array( 'ipb_user', 'MAX(ipb_deleted) AS block_status' ),
 131                         array( 'ipb_user' => $uids ),
 132                         __METHOD__,
 133                         array( 'GROUP BY' => array( 'ipb_user' ) )
 134                 );
 135                 $this->blockStatusByUid = array();
 136                 foreach ( $res as $row ) {
 137                         $this->blockStatusByUid[$row->ipb_user] = $row->block_status; // 0 or 1
 138                 }
 139                 $this->mResult->seek( 0 );
 140         }
 141
 142         function formatRow( $row ) {
 143                 $userName = $row->user_name;
 144
 145                 $ulinks = Linker::userLink( $row->user_id, $userName );
 146                 $ulinks .= Linker::userToolLinks( $row->user_id, $userName );
 147
 148                 $lang = $this->getLanguage();
 149
 150                 $list = array();
 151                 $user = User::newFromId( $row->user_id );
 152
 153                 // User right filter
 154                 foreach ( $this->hideRights as $right ) {
 155                         // Calling User::getRights() within the loop so that
 156                         // if the hideRights() filter is empty, we don't have to
 157                         // trigger the lazy-init of the big userrights array in the
 158                         // User object
 159                         if ( in_array( $right, $user->getRights() ) ) {
 160                                 return '';
 161                         }
 162                 }
 163
 164                 // User group filter
 165                 // Note: This is a different loop than for user rights,
 166                 // because we're reusing it to build the group links
 167                 // at the same time
 168                 foreach ( $user->getGroups() as $group ) {
 169                         if ( in_array( $group, $this->hideGroups ) ) {
 170                                 return '';
 171                         }
 172                         $list[] = self::buildGroupLink( $group, $userName );
 173                 }
 174
 175                 $groups = $lang->commaList( $list );
 176
 177                 $item = $lang->specialList( $ulinks, $groups );
 178
 179                 $isBlocked = isset( $this->blockStatusByUid[$row->user_id] );
 180                 if ( $isBlocked && $this->blockStatusByUid[$row->user_id] == 1 ) {
 181                         $item = "<span class=\"deleted\">$item</span>";
 182                 }
 183                 $count = $this->msg( 'activeusers-count' )->numParams( $row->recentedits )
 184                         ->params( $userName )->numParams( $this->RCMaxAge )->escaped();
 185                 $blocked = $isBlocked ? ' ' . $this->msg( 'listusers-blocked', $userName )->escaped() : '';
 186
 187                 return Html::rawElement( 'li', array(), "{$item} [{$count}]{$blocked}" );
 188         }
 189
 190         function getPageHeader() {
 191                 global $wgScript;
 192
 193                 $self = $this->getTitle();
 194                 $limit = $this->mLimit ? Html::hidden( 'limit', $this->mLimit ) : '';
 195
 196                 # Form tag
 197                 $out = Xml::openElement( 'form', array( 'method' => 'get', 'action' => $wgScript ) );
 198                 $out .= Xml::fieldset( $this->msg( 'activeusers' )->text() ) . "\n";
 199                 $out .= Html::hidden( 'title', $self->getPrefixedDBkey() ) . $limit . "\n";
 200
 201                 # Username field
 202                 $out .= Xml::inputLabel( $this->msg( 'activeusers-from' )->text(),
 203                         'username', 'offset', 20, $this->requestedUser, array( 'tabindex' => 1 ) ) . '<br />';
 204
 205                 $out .= Xml::checkLabel( $this->msg( 'activeusers-hidebots' )->text(),
 206                         'hidebots', 'hidebots', $this->opts->getValue( 'hidebots' ), array( 'tabindex' => 2 ) );
 207
 208                 $out .= Xml::checkLabel(
 209                         $this->msg( 'activeusers-hidesysops' )->text(),
 210                         'hidesysops',
 211                         'hidesysops',
 212                         $this->opts->getValue( 'hidesysops' ),
 213                         array( 'tabindex' => 3 )
 214                 ) . '<br />';
 215
 216                 # Submit button and form bottom
 217                 $out .= Xml::submitButton(
 218                         $this->msg( 'allpagessubmit' )->text(),
 219                         array( 'tabindex' => 4 )
 220                 ) . "\n";
 221                 $out .= Xml::closeElement( 'fieldset' );
 222                 $out .= Xml::closeElement( 'form' );
 223
 224                 return $out;
 225         }
 226 }
 227
 228 /**
 229  * @ingroup SpecialPage
 230  */
 231 class SpecialActiveUsers extends SpecialPage {
 232
 233         /**
 234          * Constructor
 235          */
 236         public function __construct() {
 237                 parent::__construct( 'Activeusers' );
 238         }
 239
 240         /**
 241          * Show the special page
 242          *
 243          * @param string $par Parameter passed to the page or null
 244          */
 245         public function execute( $par ) {
 246                 global $wgActiveUserDays;
 247
 248                 $this->setHeaders();
 249                 $this->outputHeader();
 250
 251                 $out = $this->getOutput();
 252                 $out->wrapWikiMsg( "<div class='mw-activeusers-intro'>\n$1\n</div>",
 253                         array( 'activeusers-intro', $this->getLanguage()->formatNum( $wgActiveUserDays ) ) );
 254
 255                 // Occasionally merge in new updates
 256                 $seconds = min( self::mergeActiveUsers( 600 ), $wgActiveUserDays * 86400 );
 257                 // Mention the level of staleness
 258                 $out->addWikiMsg( 'cachedspecial-viewing-cached-ttl',
 259                         $this->getLanguage()->formatDuration( $seconds ) );
 260
 261                 $up = new ActiveUsersPager( $this->getContext(), null, $par );
 262
 263                 # getBody() first to check, if empty
 264                 $usersbody = $up->getBody();
 265
 266                 $out->addHTML( $up->getPageHeader() );
 267                 if ( $usersbody ) {
 268                         $out->addHTML(
 269                                 $up->getNavigationBar() .
 270                                 Html::rawElement( 'ul', array(), $usersbody ) .
 271                                 $up->getNavigationBar()
 272                         );
 273                 } else {
 274                         $out->addWikiMsg( 'activeusers-noresult' );
 275                 }
 276         }
 277
 278         protected function getGroupName() {
 279                 return 'users';
 280         }
 281
 282         /**
 283          * @param intr $period Seconds (do updates no more often than this)
 284          * @return int How many seconds old the cache is
 285          */
 286         public static function mergeActiveUsers( $period ) {
 287                 global $wgActiveUserDays;
 288
 289                 $dbr = wfGetDB( DB_SLAVE );
 290                 $cTime = $dbr->selectField( 'querycache_info',
 291                         'qci_timestamp',
 292                         array( 'qci_type' => 'activeusers' )
 293                 );
 294                 if ( !wfReadOnly() ) {
 295                         if ( !$cTime || ( time() - wfTimestamp( TS_UNIX, $cTime ) ) > $period ) {
 296                                 $dbw = wfGetDB( DB_MASTER );
 297                                 if ( $dbw->estimateRowCount( 'recentchanges' ) <= 10000 ) {
 298                                         $window = $wgActiveUserDays * 86400; // small wiki
 299                                 } else {
 300                                         $window = $period * 2;
 301                                 }
 302                                 self::doQueryCacheUpdate( $dbw, $window );
 303                         }
 304                 }
 305
 306                 return ( time() -
 307                         ( $cTime ? wfTimestamp( TS_UNIX, $cTime ) : $wgActiveUserDays * 86400 ) );
 308         }
 309
 310         /**
 311          * @param DatabaseBase $dbw Passed in from updateSpecialPages.php
 312          * @return void
 313          */
 314         public static function cacheUpdate( DatabaseBase $dbw ) {
 315                 global $wgActiveUserDays;
 316
 317                 self::doQueryCacheUpdate( $dbw, $wgActiveUserDays * 86400 );
 318         }
 319
 320         /**
 321          * Update the query cache as needed
 322          *
 323          * @param DatabaseBase $dbw
 324          * @param int $window Maximum time range of new data to scan (in seconds)
 325          * @return bool Success
 326          */
 327         protected static function doQueryCacheUpdate( DatabaseBase $dbw, $window ) {
 328                 global $wgActiveUserDays;
 329
 330                 $lockKey = wfWikiID() . '-activeusers';
 331                 if ( !$dbw->lock( $lockKey, __METHOD__, 1 ) ) {
 332                         return false; // exclusive update (avoids duplicate entries)
 333                 }
 334
 335                 $now = time();
 336                 $cTime = $dbw->selectField( 'querycache_info',
 337                         'qci_timestamp',
 338                         array( 'qci_type' => 'activeusers' )
 339                 );
 340                 $cTimeUnix = $cTime ? wfTimestamp( TS_UNIX, $cTime ) : 1;
 341
 342                 // Pick the date range to fetch from. This is normally from the last
 343                 // update to till the present time, but has a limited window for sanity.
 344                 // If the window is limited, multiple runs are need to fully populate it.
 345                 $sTimestamp = max( $cTimeUnix, $now - $wgActiveUserDays * 86400 );
 346                 $eTimestamp = min( $sTimestamp + $window, $now );
 347
 348                 // Get all the users active since the last update
 349                 $res = $dbw->select(
 350                         array( 'recentchanges' ),
 351                         array( 'rc_user_text', 'lastedittime' => 'MAX(rc_timestamp)' ),
 352                         array(
 353                                 'rc_user > 0', // actual accounts
 354                                 'rc_type != ' . $dbw->addQuotes( RC_EXTERNAL ), // no wikidata
 355                                 'rc_log_type IS NULL OR rc_log_type != ' . $dbw->addQuotes( 'newusers' ),
 356                                 'rc_timestamp >= ' . $dbw->addQuotes( $dbw->timestamp( $sTimestamp ) ),
 357                                 'rc_timestamp <= ' . $dbw->addQuotes( $dbw->timestamp( $eTimestamp ) )
 358                         ),
 359                         __METHOD__,
 360                         array(
 361                                 'GROUP BY' => array( 'rc_user_text' ),
 362                                 'ORDER BY' => 'NULL' // avoid filesort
 363                         )
 364                 );
 365                 $names = array();
 366                 foreach ( $res as $row ) {
 367                         $names[$row->rc_user_text] = $row->lastedittime;
 368                 }
 369
 370                 // Rotate out users that have not edited in too long (according to old data set)
 371                 $dbw->delete( 'querycachetwo',
 372                         array(
 373                                 'qcc_type' => 'activeusers',
 374                                 'qcc_value < ' . $dbw->addQuotes( $now - $wgActiveUserDays * 86400 ) // TS_UNIX
 375                         ),
 376                         __METHOD__
 377                 );
 378
 379                 // Find which of the recently active users are already accounted for
 380                 if ( count( $names ) ) {
 381                         $res = $dbw->select( 'querycachetwo',
 382                                 array( 'user_name' => 'qcc_title' ),
 383                                 array(
 384                                         'qcc_type' => 'activeusers',
 385                                         'qcc_namespace' => NS_USER,
 386                                         'qcc_title' => array_keys( $names ) ),
 387                                 __METHOD__
 388                         );
 389                         foreach ( $res as $row ) {
 390                                 unset( $names[$row->user_name] );
 391                         }
 392                 }
 393
 394                 // Insert the users that need to be added to the list (which their last edit time
 395                 if ( count( $names ) ) {
 396                         $newRows = array();
 397                         foreach ( $names as $name => $lastEditTime ) {
 398                                 $newRows[] = array(
 399                                         'qcc_type' => 'activeusers',
 400                                         'qcc_namespace' => NS_USER,
 401                                         'qcc_title' => $name,
 402                                         'qcc_value' => wfTimestamp( TS_UNIX, $lastEditTime ),
 403                                         'qcc_namespacetwo' => 0, // unused
 404                                         'qcc_titletwo' => '' // unused
 405                                 );
 406                         }
 407                         foreach ( array_chunk( $newRows, 500 ) as $rowBatch ) {
 408                                 $dbw->insert( 'querycachetwo', $rowBatch, __METHOD__ );
 409                                 wfWaitForSlaves();
 410                         }
 411                 }
 412
 413                 // Touch the data freshness timestamp
 414                 $dbw->replace( 'querycache_info',
 415                         array( 'qci_type' ),
 416                         array( 'qci_type' => 'activeusers',
 417                                 'qci_timestamp' => $dbw->timestamp( $eTimestamp ) ), // not always $now
 418                         __METHOD__
 419                 );
 420
 421                 $dbw->unlock( $lockKey, __METHOD__ );
 422
 423                 return true;
 424         }
 425 }