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          * @var array
  51          */
  52         private $blockStatusByUid;
  53
  54         /**
  55          * @param IContextSource $context
  56          * @param null $group Unused
  57          * @param string $par Parameter passed to the page
  58          */
  59         function __construct( IContextSource $context = null, $group = null, $par = null ) {
  60                 parent::__construct( $context );
  61
  62                 $this->RCMaxAge = $this->getConfig()->get( 'ActiveUserDays' );
  63                 $un = $this->getRequest()->getText( 'username', $par );
  64                 $this->requestedUser = '';
  65                 if ( $un != '' ) {
  66                         $username = Title::makeTitleSafe( NS_USER, $un );
  67                         if ( !is_null( $username ) ) {
  68                                 $this->requestedUser = $username->getText();
  69                         }
  70                 }
  71
  72                 $this->setupOptions();
  73         }
  74
  75         public function setupOptions() {
  76                 $this->opts = new FormOptions();
  77
  78                 $this->opts->add( 'hidebots', false, FormOptions::BOOL );
  79                 $this->opts->add( 'hidesysops', false, FormOptions::BOOL );
  80
  81                 $this->opts->fetchValuesFromRequest( $this->getRequest() );
  82
  83                 if ( $this->opts->getValue( 'hidebots' ) == 1 ) {
  84                         $this->hideRights[] = 'bot';
  85                 }
  86                 if ( $this->opts->getValue( 'hidesysops' ) == 1 ) {
  87                         $this->hideGroups[] = 'sysop';
  88                 }
  89         }
  90
  91         function getIndexField() {
  92                 return 'qcc_title';
  93         }
  94
  95         function getQueryInfo() {
  96                 $dbr = $this->getDatabase();
  97
  98                 $activeUserSeconds = $this->getConfig()->get( 'ActiveUserDays' ) * 86400;
  99                 $timestamp = $dbr->timestamp( wfTimestamp( TS_UNIX ) - $activeUserSeconds );
 100                 $conds = array(
 101                         'qcc_type' => 'activeusers',
 102                         'qcc_namespace' => NS_USER,
 103                         'user_name = qcc_title',
 104                         'rc_user_text = qcc_title',
 105                         'rc_type != ' . $dbr->addQuotes( RC_EXTERNAL ), // Don't count wikidata.
 106                         'rc_log_type IS NULL OR rc_log_type != ' . $dbr->addQuotes( 'newusers' ),
 107                         'rc_timestamp >= ' . $dbr->addQuotes( $timestamp ),
 108                 );
 109                 if ( $this->requestedUser != '' ) {
 110                         $conds[] = 'qcc_title >= ' . $dbr->addQuotes( $this->requestedUser );
 111                 }
 112                 if ( !$this->getUser()->isAllowed( 'hideuser' ) ) {
 113                         $conds[] = 'NOT EXISTS (' . $dbr->selectSQLText(
 114                                 'ipblocks', '1', array( 'ipb_user=user_id', 'ipb_deleted' => 1 )
 115                         ) . ')';
 116                 }
 117
 118                 return array(
 119                         'tables' => array( 'querycachetwo', 'user', 'recentchanges' ),
 120                         'fields' => array( 'user_name', 'user_id', 'recentedits' => 'COUNT(*)', 'qcc_title' ),
 121                         'options' => array( 'GROUP BY' => array( 'qcc_title' ) ),
 122                         'conds' => $conds
 123                 );
 124         }
 125
 126         function doBatchLookups() {
 127                 $uids = array();
 128                 foreach ( $this->mResult as $row ) {
 129                         $uids[] = $row->user_id;
 130                 }
 131                 // Fetch the block status of the user for showing "(blocked)" text and for
 132                 // striking out names of suppressed users when privileged user views the list.
 133                 // Although the first query already hits the block table for un-privileged, this
 134                 // is done in two queries to avoid huge quicksorts and to make COUNT(*) correct.
 135                 $dbr = $this->getDatabase();
 136                 $res = $dbr->select( 'ipblocks',
 137                         array( 'ipb_user', 'MAX(ipb_deleted) AS block_status' ),
 138                         array( 'ipb_user' => $uids ),
 139                         __METHOD__,
 140                         array( 'GROUP BY' => array( 'ipb_user' ) )
 141                 );
 142                 $this->blockStatusByUid = array();
 143                 foreach ( $res as $row ) {
 144                         $this->blockStatusByUid[$row->ipb_user] = $row->block_status; // 0 or 1
 145                 }
 146                 $this->mResult->seek( 0 );
 147         }
 148
 149         function formatRow( $row ) {
 150                 $userName = $row->user_name;
 151
 152                 $ulinks = Linker::userLink( $row->user_id, $userName );
 153                 $ulinks .= Linker::userToolLinks( $row->user_id, $userName );
 154
 155                 $lang = $this->getLanguage();
 156
 157                 $list = array();
 158                 $user = User::newFromId( $row->user_id );
 159
 160                 // User right filter
 161                 foreach ( $this->hideRights as $right ) {
 162                         // Calling User::getRights() within the loop so that
 163                         // if the hideRights() filter is empty, we don't have to
 164                         // trigger the lazy-init of the big userrights array in the
 165                         // User object
 166                         if ( in_array( $right, $user->getRights() ) ) {
 167                                 return '';
 168                         }
 169                 }
 170
 171                 // User group filter
 172                 // Note: This is a different loop than for user rights,
 173                 // because we're reusing it to build the group links
 174                 // at the same time
 175                 foreach ( $user->getGroups() as $group ) {
 176                         if ( in_array( $group, $this->hideGroups ) ) {
 177                                 return '';
 178                         }
 179                         $list[] = self::buildGroupLink( $group, $userName );
 180                 }
 181
 182                 $groups = $lang->commaList( $list );
 183
 184                 $item = $lang->specialList( $ulinks, $groups );
 185
 186                 $isBlocked = isset( $this->blockStatusByUid[$row->user_id] );
 187                 if ( $isBlocked && $this->blockStatusByUid[$row->user_id] == 1 ) {
 188                         $item = "<span class=\"deleted\">$item</span>";
 189                 }
 190                 $count = $this->msg( 'activeusers-count' )->numParams( $row->recentedits )
 191                         ->params( $userName )->numParams( $this->RCMaxAge )->escaped();
 192                 $blocked = $isBlocked ? ' ' . $this->msg( 'listusers-blocked', $userName )->escaped() : '';
 193
 194                 return Html::rawElement( 'li', array(), "{$item} [{$count}]{$blocked}" );
 195         }
 196
 197         function getPageHeader() {
 198                 $self = $this->getTitle();
 199                 $limit = $this->mLimit ? Html::hidden( 'limit', $this->mLimit ) : '';
 200
 201                 # Form tag
 202                 $out = Xml::openElement( 'form', array( 'method' => 'get', 'action' => wfScript() ) );
 203                 $out .= Xml::fieldset( $this->msg( 'activeusers' )->text() ) . "\n";
 204                 $out .= Html::hidden( 'title', $self->getPrefixedDBkey() ) . $limit . "\n";
 205
 206                 # Username field
 207                 $out .= Xml::inputLabel( $this->msg( 'activeusers-from' )->text(),
 208                         'username', 'offset', 20, $this->requestedUser,
 209                         array( 'class' => 'mw-ui-input-inline', 'tabindex' => 1 ) ) . '<br />';
 210
 211                 $out .= Xml::checkLabel( $this->msg( 'activeusers-hidebots' )->text(),
 212                         'hidebots', 'hidebots', $this->opts->getValue( 'hidebots' ), array( 'tabindex' => 2 ) );
 213
 214                 $out .= Xml::checkLabel(
 215                         $this->msg( 'activeusers-hidesysops' )->text(),
 216                         'hidesysops',
 217                         'hidesysops',
 218                         $this->opts->getValue( 'hidesysops' ),
 219                         array( 'tabindex' => 3 )
 220                 ) . '<br />';
 221
 222                 # Submit button and form bottom
 223                 $out .= Xml::submitButton(
 224                         $this->msg( 'allpagessubmit' )->text(),
 225                         array( 'tabindex' => 4 )
 226                 ) . "\n";
 227                 $out .= Xml::closeElement( 'fieldset' );
 228                 $out .= Xml::closeElement( 'form' );
 229
 230                 return $out;
 231         }
 232 }
 233
 234 /**
 235  * @ingroup SpecialPage
 236  */
 237 class SpecialActiveUsers extends SpecialPage {
 238
 239         /**
 240          * Constructor
 241          */
 242         public function __construct() {
 243                 parent::__construct( 'Activeusers' );
 244         }
 245
 246         /**
 247          * Show the special page
 248          *
 249          * @param string $par Parameter passed to the page or null
 250          */
 251         public function execute( $par ) {
 252                 $days = $this->getConfig()->get( 'ActiveUserDays' );
 253
 254                 $this->setHeaders();
 255                 $this->outputHeader();
 256
 257                 $out = $this->getOutput();
 258                 $out->wrapWikiMsg( "<div class='mw-activeusers-intro'>\n$1\n</div>",
 259                         array( 'activeusers-intro', $this->getLanguage()->formatNum( $days ) ) );
 260
 261                 // Occasionally merge in new updates
 262                 $seconds = min( self::mergeActiveUsers( 300, $days ), $days * 86400 );
 263                 // Mention the level of staleness
 264                 $out->addWikiMsg( 'cachedspecial-viewing-cached-ttl',
 265                         $this->getLanguage()->formatDuration( $seconds ) );
 266
 267                 $up = new ActiveUsersPager( $this->getContext(), null, $par );
 268
 269                 # getBody() first to check, if empty
 270                 $usersbody = $up->getBody();
 271
 272                 $out->addHTML( $up->getPageHeader() );
 273                 if ( $usersbody ) {
 274                         $out->addHTML(
 275                                 $up->getNavigationBar() .
 276                                 Html::rawElement( 'ul', array(), $usersbody ) .
 277                                 $up->getNavigationBar()
 278                         );
 279                 } else {
 280                         $out->addWikiMsg( 'activeusers-noresult' );
 281                 }
 282         }
 283
 284         protected function getGroupName() {
 285                 return 'users';
 286         }
 287
 288         /**
 289          * @param int $period Seconds (do updates no more often than this)
 290          * @param int $days How many days user must be idle before he is considered inactive
 291          * @return int How many seconds old the cache is
 292          */
 293         public static function mergeActiveUsers( $period, $days ) {
 294                 $dbr = wfGetDB( DB_SLAVE );
 295                 $cTime = $dbr->selectField( 'querycache_info',
 296                         'qci_timestamp',
 297                         array( 'qci_type' => 'activeusers' )
 298                 );
 299
 300                 if ( !wfReadOnly() ) {
 301                         if ( !$cTime || ( time() - wfTimestamp( TS_UNIX, $cTime ) ) > $period ) {
 302                                 $dbw = wfGetDB( DB_MASTER );
 303                                 if ( $dbw->estimateRowCount( 'recentchanges' ) <= 10000 ) {
 304                                         $window = $days * 86400; // small wiki
 305                                 } else {
 306                                         $window = $period * 2;
 307                                 }
 308                                 $cTime = self::doQueryCacheUpdate( $dbw, $days, $window ) ?: $cTime;
 309                         }
 310                 }
 311
 312                 return ( time() -
 313                         ( $cTime ? wfTimestamp( TS_UNIX, $cTime ) : $days * 86400 ) );
 314         }
 315
 316         /**
 317          * @param DatabaseBase $dbw Passed in from updateSpecialPages.php
 318          * @return void
 319          */
 320         public static function cacheUpdate( DatabaseBase $dbw ) {
 321                 global $wgActiveUserDays;
 322
 323                 self::doQueryCacheUpdate( $dbw, $wgActiveUserDays, $wgActiveUserDays * 86400 );
 324         }
 325
 326         /**
 327          * Update the query cache as needed
 328          *
 329          * @param DatabaseBase $dbw
 330          * @param int $days How many days user must be idle before he is considered inactive
 331          * @param int $window Maximum time range of new data to scan (in seconds)
 332          * @return int|bool UNIX timestamp the cache is now up-to-date as of (false on error)
 333          */
 334         protected static function doQueryCacheUpdate( DatabaseBase $dbw, $days, $window ) {
 335                 $dbw->startAtomic( __METHOD__ );
 336
 337                 $lockKey = wfWikiID() . '-activeusers';
 338                 if ( !$dbw->lock( $lockKey, __METHOD__, 1 ) ) {
 339                         return false; // exclusive update (avoids duplicate entries)
 340                 }
 341
 342                 $nowUnix = time();
 343                 // Get the last-updated timestamp for the cache
 344                 $cTime = $dbw->selectField( 'querycache_info',
 345                         'qci_timestamp',
 346                         array( 'qci_type' => 'activeusers' )
 347                 );
 348                 $cTimeUnix = $cTime ? wfTimestamp( TS_UNIX, $cTime ) : 1;
 349
 350                 // Pick the date range to fetch from. This is normally from the last
 351                 // update to till the present time, but has a limited window for sanity.
 352                 // If the window is limited, multiple runs are need to fully populate it.
 353                 $sTimestamp = max( $cTimeUnix, $nowUnix - $days * 86400 );
 354                 $eTimestamp = min( $sTimestamp + $window, $nowUnix );
 355
 356                 // Get all the users active since the last update
 357                 $res = $dbw->select(
 358                         array( 'recentchanges' ),
 359                         array( 'rc_user_text', 'lastedittime' => 'MAX(rc_timestamp)' ),
 360                         array(
 361                                 'rc_user > 0', // actual accounts
 362                                 'rc_type != ' . $dbw->addQuotes( RC_EXTERNAL ), // no wikidata
 363                                 'rc_log_type IS NULL OR rc_log_type != ' . $dbw->addQuotes( 'newusers' ),
 364                                 'rc_timestamp >= ' . $dbw->addQuotes( $dbw->timestamp( $sTimestamp ) ),
 365                                 'rc_timestamp <= ' . $dbw->addQuotes( $dbw->timestamp( $eTimestamp ) )
 366                         ),
 367                         __METHOD__,
 368                         array(
 369                                 'GROUP BY' => array( 'rc_user_text' ),
 370                                 'ORDER BY' => 'NULL' // avoid filesort
 371                         )
 372                 );
 373                 $names = array();
 374                 foreach ( $res as $row ) {
 375                         $names[$row->rc_user_text] = $row->lastedittime;
 376                 }
 377
 378                 // Rotate out users that have not edited in too long (according to old data set)
 379                 $dbw->delete( 'querycachetwo',
 380                         array(
 381                                 'qcc_type' => 'activeusers',
 382                                 'qcc_value < ' . $dbw->addQuotes( $nowUnix - $days * 86400 ) // TS_UNIX
 383                         ),
 384                         __METHOD__
 385                 );
 386
 387                 // Find which of the recently active users are already accounted for
 388                 if ( count( $names ) ) {
 389                         $res = $dbw->select( 'querycachetwo',
 390                                 array( 'user_name' => 'qcc_title' ),
 391                                 array(
 392                                         'qcc_type' => 'activeusers',
 393                                         'qcc_namespace' => NS_USER,
 394                                         'qcc_title' => array_keys( $names ) ),
 395                                 __METHOD__,
 396                                 // See the latest data (ignoring trx snapshot) to avoid
 397                                 // duplicates if this method was called in a transaction
 398                                 array( 'LOCK IN SHARE MODE' )
 399                         );
 400                         foreach ( $res as $row ) {
 401                                 unset( $names[$row->user_name] );
 402                         }
 403                 }
 404
 405                 // Insert the users that need to be added to the list (which their last edit time
 406                 if ( count( $names ) ) {
 407                         $newRows = array();
 408                         foreach ( $names as $name => $lastEditTime ) {
 409                                 $newRows[] = array(
 410                                         'qcc_type' => 'activeusers',
 411                                         'qcc_namespace' => NS_USER,
 412                                         'qcc_title' => $name,
 413                                         'qcc_value' => wfTimestamp( TS_UNIX, $lastEditTime ),
 414                                         'qcc_namespacetwo' => 0, // unused
 415                                         'qcc_titletwo' => '' // unused
 416                                 );
 417                         }
 418                         foreach ( array_chunk( $newRows, 500 ) as $rowBatch ) {
 419                                 $dbw->insert( 'querycachetwo', $rowBatch, __METHOD__ );
 420                                 if ( !$dbw->trxLevel() ) {
 421                                         wfWaitForSlaves();
 422                                 }
 423                         }
 424                 }
 425
 426                 // If a transaction was already started, it might have an old
 427                 // snapshot, so kludge the timestamp range back as needed.
 428                 $asOfTimestamp = min( $eTimestamp, (int)$dbw->trxTimestamp() );
 429
 430                 // Touch the data freshness timestamp
 431                 $dbw->replace( 'querycache_info',
 432                         array( 'qci_type' ),
 433                         array( 'qci_type' => 'activeusers',
 434                                 'qci_timestamp' => $dbw->timestamp( $asOfTimestamp ) ), // not always $now
 435                         __METHOD__
 436                 );
 437
 438                 $dbw->unlock( $lockKey, __METHOD__ );
 439                 $dbw->endAtomic( __METHOD__ );
 440
 441                 return $eTimestamp;
 442         }
 443 }