includes/specials/SpecialContributions.php

   1 <?php
   2 /**
   3  * Implements Special:Contributions
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  * http://www.gnu.org/copyleft/gpl.html
  19  *
  20  * @file
  21  * @ingroup SpecialPage
  22  */
  23
  24 /**
  25  * Special:Contributions, show user contributions in a paged list
  26  *
  27  * @ingroup SpecialPage
  28  */
  29
  30 class SpecialContributions extends SpecialPage {
  31
  32         protected $opts;
  33
  34         public function __construct() {
  35                 parent::__construct( 'Contributions' );
  36         }
  37
  38         public function execute( $par ) {
  39                 $this->setHeaders();
  40                 $this->outputHeader();
  41                 $out = $this->getOutput();
  42                 $out->addModuleStyles( 'mediawiki.special' );
  43
  44                 $this->opts = array();
  45                 $request = $this->getRequest();
  46
  47                 if( $par == 'newbies' ) {
  48                         $target = 'newbies';
  49                         $this->opts['contribs'] = 'newbie';
  50                 } elseif( $par !== null ) {
  51                         $target = $par;
  52                 } else {
  53                         $target = $request->getVal( 'target' );
  54                 }
  55
  56                 // check for radiobox
  57                 if( $request->getVal( 'contribs' ) == 'newbie' ) {
  58                         $target = 'newbies';
  59                         $this->opts['contribs'] = 'newbie';
  60                 } else {
  61                         $this->opts['contribs'] = 'user';
  62                 }
  63
  64                 $this->opts['deletedOnly'] = $request->getBool( 'deletedOnly' );
  65
  66                 if( !strlen( $target ) ) {
  67                         $out->addHTML( $this->getForm() );
  68                         return;
  69                 }
  70
  71                 $user = $this->getUser();
  72
  73                 $this->opts['limit'] = $request->getInt( 'limit', $user->getOption('rclimit') );
  74                 $this->opts['target'] = $target;
  75                 $this->opts['topOnly'] = $request->getBool( 'topOnly' );
  76
  77                 $nt = Title::makeTitleSafe( NS_USER, $target );
  78                 if( !$nt ) {
  79                         $out->addHTML( $this->getForm() );
  80                         return;
  81                 }
  82                 $id = User::idFromName( $nt->getText() );
  83
  84                 if( $this->opts['contribs'] != 'newbie' ) {
  85                         $target = $nt->getText();
  86                         $out->addSubtitle( $this->contributionsSub( $nt, $id ) );
  87                         $out->setHTMLTitle( $this->msg( 'pagetitle', wfMsgExt( 'contributions-title', array( 'parsemag' ), $target ) ) );
  88                         $userObj = User::newFromName( $target, false );
  89                         if ( is_object( $userObj ) ) {
  90                                 $this->getSkin()->setRelevantUser( $userObj );
  91                         }
  92                 } else {
  93                         $out->addSubtitle( $this->msg( 'sp-contributions-newbies-sub') );
  94                         $out->setHTMLTitle( $this->msg( 'pagetitle', wfMsg( 'sp-contributions-newbies-title' ) ) );
  95                 }
  96
  97                 if( ( $ns = $request->getVal( 'namespace', null ) ) !== null && $ns !== '' ) {
  98                         $this->opts['namespace'] = intval( $ns );
  99                 } else {
 100                         $this->opts['namespace'] = '';
 101                 }
 102
 103                 $this->opts['nsInvert'] = (bool) $request->getVal( 'nsInvert' );
 104
 105                 $this->opts['tagfilter'] = (string) $request->getVal( 'tagfilter' );
 106
 107                 // Allows reverts to have the bot flag in recent changes. It is just here to
 108                 // be passed in the form at the top of the page
 109                 if( $user->isAllowed( 'markbotedits' ) && $request->getBool( 'bot' ) ) {
 110                         $this->opts['bot'] = '1';
 111                 }
 112
 113                 $skip = $request->getText( 'offset' ) || $request->getText( 'dir' ) == 'prev';
 114                 # Offset overrides year/month selection
 115                 if( $skip ) {
 116                         $this->opts['year'] = '';
 117                         $this->opts['month'] = '';
 118                 } else {
 119                         $this->opts['year'] = $request->getIntOrNull( 'year' );
 120                         $this->opts['month'] = $request->getIntOrNull( 'month' );
 121                 }
 122
 123                 $feedType = $request->getVal( 'feed' );
 124                 if( $feedType ) {
 125                         // Maintain some level of backwards compatability
 126                         // If people request feeds using the old parameters, redirect to API
 127                         $apiParams = array(
 128                                 'action' => 'feedcontributions',
 129                                 'feedformat' => $feedType,
 130                                 'user' => $target,
 131                         );
 132                         if ( $this->opts['topOnly'] ) {
 133                                 $apiParams['toponly'] = true;
 134                         }
 135                         if ( $this->opts['deletedOnly'] ) {
 136                                 $apiParams['deletedonly'] = true;
 137                         }
 138                         if ( $this->opts['tagfilter'] !== '' ) {
 139                                 $apiParams['tagfilter'] = $this->opts['tagfilter'];
 140                         }
 141                         if ( $this->opts['namespace'] !== '' ) {
 142                                 $apiParams['namespace'] = $this->opts['namespace'];
 143                         }
 144                         if ( $this->opts['year'] !== null ) {
 145                                 $apiParams['year'] = $this->opts['year'];
 146                         }
 147                         if ( $this->opts['month'] !== null ) {
 148                                 $apiParams['month'] = $this->opts['month'];
 149                         }
 150
 151                         $url = wfScript( 'api' ) . '?' . wfArrayToCGI( $apiParams );
 152
 153                         $out->redirect( $url, '301' );
 154                         return;
 155                 }
 156
 157                 // Add RSS/atom links
 158                 $this->addFeedLinks( array( 'action' => 'feedcontributions', 'user' => $target ) );
 159
 160                 if ( wfRunHooks( 'SpecialContributionsBeforeMainOutput', array( $id ) ) ) {
 161
 162                         $out->addHTML( $this->getForm() );
 163
 164                         $pager = new ContribsPager( array(
 165                                 'target' => $target,
 166                                 'contribs' => $this->opts['contribs'],
 167                                 'namespace' => $this->opts['namespace'],
 168                                 'year' => $this->opts['year'],
 169                                 'month' => $this->opts['month'],
 170                                 'deletedOnly' => $this->opts['deletedOnly'],
 171                                 'topOnly' => $this->opts['topOnly'],
 172                                 'nsInvert' => $this->opts['nsInvert'],
 173                         ) );
 174                         if( !$pager->getNumRows() ) {
 175                                 $out->addWikiMsg( 'nocontribs', $target );
 176                         } else {
 177                                 # Show a message about slave lag, if applicable
 178                                 $lag = wfGetLB()->safeGetLag( $pager->getDatabase() );
 179                                 if( $lag > 0 )
 180                                         $out->showLagWarning( $lag );
 181
 182                                 $out->addHTML(
 183                                         '<p>' . $pager->getNavigationBar() . '</p>' .
 184                                         $pager->getBody() .
 185                                         '<p>' . $pager->getNavigationBar() . '</p>'
 186                                 );
 187                         }
 188                         $out->preventClickjacking( $pager->getPreventClickjacking() );
 189
 190                         # Show the appropriate "footer" message - WHOIS tools, etc.
 191                         if( $this->opts['contribs'] != 'newbie' ) {
 192                                 $message = 'sp-contributions-footer';
 193                                 if ( IP::isIPAddress( $target ) ) {
 194                                         $message = 'sp-contributions-footer-anon';
 195                                 } else {
 196                                         $userObj = User::newFromName( $target );
 197                                         if ( !$userObj || $userObj->isAnon() ) {
 198                                                 // No message for non-existing users
 199                                                 return;
 200                                         }
 201                                 }
 202
 203                                 if( !wfMessage( $message, $target )->isDisabled() ) {
 204                                         $out->wrapWikiMsg(
 205                                                 "<div class='mw-contributions-footer'>\n$1\n</div>",
 206                                                 array( $message, $target ) );
 207                                 }
 208                         }
 209                 }
 210         }
 211
 212         /**
 213          * Generates the subheading with links
 214          * @param $nt Title object for the target
 215          * @param $id Integer: User ID for the target
 216          * @return String: appropriately-escaped HTML to be output literally
 217          * @todo FIXME: Almost the same as getSubTitle in SpecialDeletedContributions.php. Could be combined.
 218          */
 219         protected function contributionsSub( $nt, $id ) {
 220                 if ( $id === null ) {
 221                         $user = htmlspecialchars( $nt->getText() );
 222                 } else {
 223                         $user = Linker::link( $nt, htmlspecialchars( $nt->getText() ) );
 224                 }
 225                 $userObj = User::newFromName( $nt->getText(), /* check for username validity not needed */ false );
 226                 $talk = $nt->getTalkPage();
 227                 if( $talk ) {
 228                         $tools = self::getUserLinks( $nt, $talk, $userObj, $this->getUser() );
 229                         $links = $this->getLang()->pipeList( $tools );
 230
 231                         // Show a note if the user is blocked and display the last block log entry.
 232                         if ( $userObj->isBlocked() ) {
 233                                 $out = $this->getOutput(); // showLogExtract() wants first parameter by reference
 234                                 LogEventsList::showLogExtract(
 235                                         $out,
 236                                         'block',
 237                                         $nt,
 238                                         '',
 239                                         array(
 240                                                 'lim' => 1,
 241                                                 'showIfEmpty' => false,
 242                                                 'msgKey' => array(
 243                                                         $userObj->isAnon() ?
 244                                                                 'sp-contributions-blocked-notice-anon' :
 245                                                                 'sp-contributions-blocked-notice',
 246                                                         $nt->getText() # Support GENDER in 'sp-contributions-blocked-notice'
 247                                                 ),
 248                                                 'offset' => '' # don't use WebRequest parameter offset
 249                                         )
 250                                 );
 251                         }
 252                 }
 253
 254                 // Old message 'contribsub' had one parameter, but that doesn't work for
 255                 // languages that want to put the "for" bit right after $user but before
 256                 // $links.  If 'contribsub' is around, use it for reverse compatibility,
 257                 // otherwise use 'contribsub2'.
 258                 $oldMsg = $this->msg( 'contribsub' );
 259                 if ( $oldMsg->exists() ) {
 260                         return $oldMsg->rawParams( "$user ($links)" );
 261                 } else {
 262                         return $this->msg( 'contribsub2' )->rawParams( $user, $links );
 263                 }
 264         }
 265
 266         /**
 267          * Links to different places.
 268          * @param $userpage Title: Target user page
 269          * @param $talkpage Title: Talk page
 270          * @param $target User: Target user object
 271          * @param $subject User: The viewing user ($wgUser might be still checked in some cases)
 272          */
 273         public static function getUserLinks( Title $userpage, Title $talkpage, User $target, User $subject ) {
 274
 275                 $id = $target->getId();
 276                 $username = $target->getName();
 277
 278                 $tools[] = Linker::link( $talkpage, wfMsgHtml( 'sp-contributions-talk' ) );
 279
 280                 if( ( $id !== null ) || ( $id === null && IP::isIPAddress( $username ) ) ) {
 281                         if( $subject->isAllowed( 'block' ) ) { # Block / Change block / Unblock links
 282                                 if ( $target->isBlocked() ) {
 283                                         $tools[] = Linker::linkKnown( # Change block link
 284                                                 SpecialPage::getTitleFor( 'Block', $username ),
 285                                                 wfMsgHtml( 'change-blocklink' )
 286                                         );
 287                                         $tools[] = Linker::linkKnown( # Unblock link
 288                                                 SpecialPage::getTitleFor( 'Unblock', $username ),
 289                                                 wfMsgHtml( 'unblocklink' )
 290                                         );
 291                                 } else { # User is not blocked
 292                                         $tools[] = Linker::linkKnown( # Block link
 293                                                 SpecialPage::getTitleFor( 'Block', $username ),
 294                                                 wfMsgHtml( 'blocklink' )
 295                                         );
 296                                 }
 297                         }
 298                         # Block log link
 299                         $tools[] = Linker::linkKnown(
 300                                 SpecialPage::getTitleFor( 'Log', 'block' ),
 301                                 wfMsgHtml( 'sp-contributions-blocklog' ),
 302                                 array(),
 303                                 array(
 304                                         'page' => $userpage->getPrefixedText()
 305                                 )
 306                         );
 307                 }
 308                 # Uploads
 309                 $tools[] = Linker::linkKnown(
 310                         SpecialPage::getTitleFor( 'Listfiles', $username ),
 311                         wfMsgHtml( 'sp-contributions-uploads' )
 312                 );
 313
 314                 # Other logs link
 315                 $tools[] = Linker::linkKnown(
 316                         SpecialPage::getTitleFor( 'Log', $username ),
 317                         wfMsgHtml( 'sp-contributions-logs' )
 318                 );
 319
 320                 # Add link to deleted user contributions for priviledged users
 321                 if( $subject->isAllowed( 'deletedhistory' ) ) {
 322                         $tools[] = Linker::linkKnown(
 323                                 SpecialPage::getTitleFor( 'DeletedContributions', $username ),
 324                                 wfMsgHtml( 'sp-contributions-deleted' )
 325                         );
 326                 }
 327
 328                 # Add a link to change user rights for privileged users
 329                 $userrightsPage = new UserrightsPage();
 330                 $userrightsPage->getContext()->setUser( $subject );
 331                 if( $id !== null && $userrightsPage->userCanChangeRights( $target ) ) {
 332                         $tools[] = Linker::linkKnown(
 333                                 SpecialPage::getTitleFor( 'Userrights', $username ),
 334                                 wfMsgHtml( 'sp-contributions-userrights' )
 335                         );
 336                 }
 337
 338                 wfRunHooks( 'ContributionsToolLinks', array( $id, $userpage, &$tools ) );
 339                 return $tools;
 340         }
 341
 342         /**
 343          * Generates the namespace selector form with hidden attributes.
 344          * @return String: HTML fragment
 345          */
 346         protected function getForm() {
 347                 global $wgScript;
 348
 349                 $this->opts['title'] = $this->getTitle()->getPrefixedText();
 350                 if( !isset( $this->opts['target'] ) ) {
 351                         $this->opts['target'] = '';
 352                 } else {
 353                         $this->opts['target'] = str_replace( '_' , ' ' , $this->opts['target'] );
 354                 }
 355
 356                 if( !isset( $this->opts['namespace'] ) ) {
 357                         $this->opts['namespace'] = '';
 358                 }
 359
 360                 if( !isset( $this->opts['nsInvert'] ) ) {
 361                         $this->opts['nsInvert'] = '';
 362                 }
 363
 364                 if( !isset( $this->opts['contribs'] ) ) {
 365                         $this->opts['contribs'] = 'user';
 366                 }
 367
 368                 if( !isset( $this->opts['year'] ) ) {
 369                         $this->opts['year'] = '';
 370                 }
 371
 372                 if( !isset( $this->opts['month'] ) ) {
 373                         $this->opts['month'] = '';
 374                 }
 375
 376                 if( $this->opts['contribs'] == 'newbie' ) {
 377                         $this->opts['target'] = '';
 378                 }
 379
 380                 if( !isset( $this->opts['tagfilter'] ) ) {
 381                         $this->opts['tagfilter'] = '';
 382                 }
 383
 384                 if( !isset( $this->opts['topOnly'] ) ) {
 385                         $this->opts['topOnly'] = false;
 386                 }
 387
 388                 $f = Xml::openElement( 'form', array( 'method' => 'get', 'action' => $wgScript, 'class' => 'mw-contributions-form' ) );
 389
 390                 # Add hidden params for tracking except for parameters in $skipParameters
 391                 $skipParameters = array( 'namespace', 'nsInvert', 'deletedOnly', 'target', 'contribs', 'year', 'month', 'topOnly' );
 392                 foreach ( $this->opts as $name => $value ) {
 393                         if( in_array( $name, $skipParameters ) ) {
 394                                 continue;
 395                         }
 396                         $f .= "\t" . Html::hidden( $name, $value ) . "\n";
 397                 }
 398
 399                 $tagFilter = ChangeTags::buildTagFilterSelector( $this->opts['tagfilter'] );
 400
 401                 $f .=   Xml::fieldset( wfMsg( 'sp-contributions-search' ) ) .
 402                         Xml::radioLabel( wfMsgExt( 'sp-contributions-newbies', array( 'parsemag' ) ),
 403                                 'contribs', 'newbie' , 'newbie', $this->opts['contribs'] == 'newbie' ) . '<br />' .
 404                         Xml::radioLabel( wfMsgExt( 'sp-contributions-username', array( 'parsemag' ) ),
 405                                 'contribs' , 'user', 'user', $this->opts['contribs'] == 'user' ) . ' ' .
 406                         Html::input( 'target', $this->opts['target'], 'text', array(
 407                                 'size' => '20',
 408                                 'required' => ''
 409                         ) + ( $this->opts['target'] ? array() : array( 'autofocus' ) ) ) . ' '.
 410                         Html::rawElement( 'span', array( 'style' => 'white-space: nowrap' ),
 411                                 Xml::label( wfMsg( 'namespace' ), 'namespace' ) . ' ' .
 412                                 Xml::namespaceSelector( $this->opts['namespace'], '' )
 413                         ) .
 414                         Xml::checkLabel( wfMsg('invert'), 'nsInvert', 'nsInvert', $this->opts['nsInvert'] ) . '&nbsp;' .
 415                         Xml::checkLabel( wfMsg( 'history-show-deleted' ),
 416                                 'deletedOnly', 'mw-show-deleted-only', $this->opts['deletedOnly'] ) . '<br />' .
 417                         Xml::tags( 'p', null, Xml::checkLabel( wfMsg( 'sp-contributions-toponly' ),
 418                                 'topOnly', 'mw-show-top-only', $this->opts['topOnly'] ) ) .
 419                         ( $tagFilter ? Xml::tags( 'p', null, implode( '&#160;', $tagFilter ) ) : '' ) .
 420                         Html::rawElement( 'p', array( 'style' => 'white-space: nowrap' ),
 421                                 Xml::dateMenu( $this->opts['year'], $this->opts['month'] ) . ' ' .
 422                                 Xml::submitButton( wfMsg( 'sp-contributions-submit' ) )
 423                         ) . ' ';
 424                 $explain = wfMessage( 'sp-contributions-explain' );
 425                 if ( $explain->exists() ) {
 426                         $f .= "<p id='mw-sp-contributions-explain'>{$explain}</p>";
 427                 }
 428                 $f .= Xml::closeElement('fieldset' ) .
 429                         Xml::closeElement( 'form' );
 430                 return $f;
 431         }
 432 }
 433
 434 /**
 435  * Pager for Special:Contributions
 436  * @ingroup SpecialPage Pager
 437  */
 438 class ContribsPager extends ReverseChronologicalPager {
 439         public $mDefaultDirection = true;
 440         var $messages, $target;
 441         var $namespace = '', $mDb;
 442         var $preventClickjacking = false;
 443
 444         function __construct( $options ) {
 445                 parent::__construct();
 446
 447                 $msgs = array( 'uctop', 'diff', 'newarticle', 'rollbacklink', 'diff', 'hist', 'rev-delundel', 'pipe-separator' );
 448
 449                 foreach( $msgs as $msg ) {
 450                         $this->messages[$msg] = wfMsgExt( $msg, array( 'escapenoentities' ) );
 451                 }
 452
 453                 $this->target = isset( $options['target'] ) ? $options['target'] : '';
 454                 $this->contribs = isset( $options['contribs'] ) ? $options['contribs'] : 'users';
 455                 $this->namespace = isset( $options['namespace'] ) ? $options['namespace'] : '';
 456                 $this->tagFilter = isset( $options['tagfilter'] ) ? $options['tagfilter'] : false;
 457                 $this->nsInvert = isset( $options['nsInvert'] ) ? $options['nsInvert'] : false;
 458
 459                 $this->deletedOnly = !empty( $options['deletedOnly'] );
 460                 $this->topOnly = !empty( $options['topOnly'] );
 461
 462                 $year = isset( $options['year'] ) ? $options['year'] : false;
 463                 $month = isset( $options['month'] ) ? $options['month'] : false;
 464                 $this->getDateCond( $year, $month );
 465
 466                 $this->mDb = wfGetDB( DB_SLAVE, 'contributions' );
 467         }
 468
 469         function getDefaultQuery() {
 470                 $query = parent::getDefaultQuery();
 471                 $query['target'] = $this->target;
 472                 return $query;
 473         }
 474
 475         function getQueryInfo() {
 476                 list( $tables, $index, $userCond, $join_cond ) = $this->getUserCond();
 477
 478                 $user = $this->getUser();
 479                 $conds = array_merge( $userCond, $this->getNamespaceCond() );
 480
 481                 // Paranoia: avoid brute force searches (bug 17342)
 482                 if( !$user->isAllowed( 'deletedhistory' ) ) {
 483                         $conds[] = $this->mDb->bitAnd('rev_deleted',Revision::DELETED_USER) . ' = 0';
 484                 } elseif( !$user->isAllowed( 'suppressrevision' ) ) {
 485                         $conds[] = $this->mDb->bitAnd('rev_deleted',Revision::SUPPRESSED_USER) .
 486                                 ' != ' . Revision::SUPPRESSED_USER;
 487                 }
 488
 489                 # Don't include orphaned revisions
 490                 $join_cond['page'] = Revision::pageJoinCond();
 491                 # Get the current user name for accounts
 492                 $join_cond['user'] = Revision::userJoinCond();
 493
 494                 $queryInfo = array(
 495                         'tables'     => $tables,
 496                         'fields'     => array_merge(
 497                                 Revision::selectFields(),
 498                                 Revision::selectUserFields(),
 499                                 array( 'page_namespace', 'page_title', 'page_is_new',
 500                                         'page_latest', 'page_is_redirect', 'page_len' )
 501                         ),
 502                         'conds'      => $conds,
 503                         'options'    => array( 'USE INDEX' => array( 'revision' => $index ) ),
 504                         'join_conds' => $join_cond
 505                 );
 506
 507                 ChangeTags::modifyDisplayQuery(
 508                         $queryInfo['tables'],
 509                         $queryInfo['fields'],
 510                         $queryInfo['conds'],
 511                         $queryInfo['join_conds'],
 512                         $queryInfo['options'],
 513                         $this->tagFilter
 514                 );
 515
 516                 wfRunHooks( 'ContribsPager::getQueryInfo', array( &$this, &$queryInfo ) );
 517                 return $queryInfo;
 518         }
 519
 520         function getUserCond() {
 521                 $condition = array();
 522                 $join_conds = array();
 523                 $tables = array( 'revision', 'page', 'user' );
 524                 if( $this->contribs == 'newbie' ) {
 525                         $tables[] = 'user_groups';
 526                         $max = $this->mDb->selectField( 'user', 'max(user_id)', false, __METHOD__ );
 527                         $condition[] = 'rev_user >' . (int)($max - $max / 100);
 528                         $condition[] = 'ug_group IS NULL';
 529                         $index = 'user_timestamp';
 530                         # @todo FIXME: Other groups may have 'bot' rights
 531                         $join_conds['user_groups'] = array( 'LEFT JOIN', "ug_user = rev_user AND ug_group = 'bot'" );
 532                 } else {
 533                         if ( IP::isIPAddress( $this->target ) ) {
 534                                 $condition['rev_user_text'] = $this->target;
 535                                 $index = 'usertext_timestamp';
 536                         } else {
 537                                 $condition['rev_user'] = User::idFromName( $this->target );
 538                                 $index = 'user_timestamp';
 539                         }
 540                 }
 541                 if( $this->deletedOnly ) {
 542                         $condition[] = "rev_deleted != '0'";
 543                 }
 544                 if( $this->topOnly ) {
 545                         $condition[] = "rev_id = page_latest";
 546                 }
 547                 return array( $tables, $index, $condition, $join_conds );
 548         }
 549
 550         function getNamespaceCond() {
 551                 if( $this->namespace !== '' ) {
 552                         if ( $this->nsInvert ) {
 553                                 return array( 'page_namespace != ' . (int)$this->namespace );
 554                         } else {
 555                                 return array( 'page_namespace' => (int)$this->namespace );
 556                         }
 557                 } else {
 558                         return array();
 559                 }
 560         }
 561
 562         function getIndexField() {
 563                 return 'rev_timestamp';
 564         }
 565
 566         function doBatchLookups() {
 567                 $this->mResult->rewind();
 568                 $revIds = array();
 569                 foreach ( $this->mResult as $row ) {
 570                         $revIds[] = $row->rev_parent_id;
 571                 }
 572                 $this->mParentLens = $this->getParentLengths( $revIds );
 573                 $this->mResult->rewind(); // reset
 574
 575                 if ( $this->contribs === 'newbie' ) { // multiple users
 576                         # Do a link batch query
 577                         $this->mResult->seek( 0 );
 578                         $batch = new LinkBatch();
 579                         # Give some pointers to make (last) links
 580                         foreach ( $this->mResult as $row ) {
 581                                 $batch->addObj( Title::makeTitleSafe( NS_USER, $row->user_name ) );
 582                                 $batch->addObj( Title::makeTitleSafe( NS_USER_TALK, $row->user_name ) );
 583                         }
 584                         $batch->execute();
 585                         $this->mResult->seek( 0 );
 586                 }
 587         }
 588
 589         /**
 590          * Do a batched query to get the parent revision lengths
 591          */
 592         private function getParentLengths( array $revIds ) {
 593                 $revLens = array();
 594                 if ( !$revIds ) {
 595                         return $revLens; // empty
 596                 }
 597                 wfProfileIn( __METHOD__ );
 598                 $res = $this->getDatabase()->select( 'revision',
 599                         array( 'rev_id', 'rev_len' ),
 600                         array( 'rev_id' => $revIds ),
 601                         __METHOD__ );
 602                 foreach( $res as $row ) {
 603                         $revLens[$row->rev_id] = $row->rev_len;
 604                 }
 605                 wfProfileOut( __METHOD__ );
 606                 return $revLens;
 607         }
 608
 609         function getStartBody() {
 610                 return "<ul>\n";
 611         }
 612
 613         function getEndBody() {
 614                 return "</ul>\n";
 615         }
 616
 617         /**
 618          * Generates each row in the contributions list.
 619          *
 620          * Contributions which are marked "top" are currently on top of the history.
 621          * For these contributions, a [rollback] link is shown for users with roll-
 622          * back privileges. The rollback link restores the most recent version that
 623          * was not written by the target user.
 624          *
 625          * @todo This would probably look a lot nicer in a table.
 626          */
 627         function formatRow( $row ) {
 628                 wfProfileIn( __METHOD__ );
 629
 630                 $rev = new Revision( $row );
 631                 $classes = array();
 632
 633                 $page = Title::newFromRow( $row );
 634                 $link = Linker::link(
 635                         $page,
 636                         htmlspecialchars( $page->getPrefixedText() ),
 637                         array(),
 638                         $page->isRedirect() ? array( 'redirect' => 'no' ) : array()
 639                 );
 640                 # Mark current revisions
 641                 $topmarktext = '';
 642                 if( $row->rev_id == $row->page_latest ) {
 643                         $topmarktext .= '<span class="mw-uctop">' . $this->messages['uctop'] . '</span>';
 644                         # Add rollback link
 645                         if( !$row->page_is_new && $page->quickUserCan( 'rollback' )
 646                                 && $page->quickUserCan( 'edit' ) )
 647                         {
 648                                 $this->preventClickjacking();
 649                                 $topmarktext .= ' '.Linker::generateRollback( $rev );
 650                         }
 651                 }
 652                 $user = $this->getUser();
 653                 # Is there a visible previous revision?
 654                 if( $rev->userCan( Revision::DELETED_TEXT, $user ) && $rev->getParentId() !== 0 ) {
 655                         $difftext = Linker::linkKnown(
 656                                 $page,
 657                                 $this->messages['diff'],
 658                                 array(),
 659                                 array(
 660                                         'diff' => 'prev',
 661                                         'oldid' => $row->rev_id
 662                                 )
 663                         );
 664                 } else {
 665                         $difftext = $this->messages['diff'];
 666                 }
 667                 $histlink = Linker::linkKnown(
 668                         $page,
 669                         $this->messages['hist'],
 670                         array(),
 671                         array( 'action' => 'history' )
 672                 );
 673
 674                 if ( isset( $this->mParentLens[$row->rev_parent_id] ) ) {
 675                         $chardiff = ' . . ' . ChangesList::showCharacterDifference(
 676                                 $this->mParentLens[$row->rev_parent_id], $row->rev_len ) . ' . . ';
 677                 } else {
 678                         $chardiff = ' ';
 679                 }
 680
 681                 $comment = $this->getLang()->getDirMark() . Linker::revComment( $rev, false, true );
 682                 $date = $this->getLang()->timeanddate( wfTimestamp( TS_MW, $row->rev_timestamp ), true );
 683                 if( $rev->userCan( Revision::DELETED_TEXT, $user ) ) {
 684                         $d = Linker::linkKnown(
 685                                 $page,
 686                                 htmlspecialchars($date),
 687                                 array(),
 688                                 array( 'oldid' => intval( $row->rev_id ) )
 689                         );
 690                 } else {
 691                         $d = htmlspecialchars( $date );
 692                 }
 693                 if( $rev->isDeleted( Revision::DELETED_TEXT ) ) {
 694                         $d = '<span class="history-deleted">' . $d . '</span>';
 695                 }
 696
 697                 # Show user names for /newbies as there may be different users.
 698                 # Note that we already excluded rows with hidden user names.
 699                 if( $this->contribs == 'newbie' ) {
 700                         $userlink = ' . . ' . Linker::userLink( $rev->getUser(), $rev->getUserText() );
 701                         $userlink .= ' ' . wfMsg( 'parentheses',
 702                                 Linker::userTalkLink( $rev->getUser(), $rev->getUserText() ) ) . ' ';
 703                 } else {
 704                         $userlink = '';
 705                 }
 706
 707                 if( $rev->getParentId() === 0 ) {
 708                         $nflag = ChangesList::flag( 'newpage' );
 709                 } else {
 710                         $nflag = '';
 711                 }
 712
 713                 if( $rev->isMinor() ) {
 714                         $mflag = ChangesList::flag( 'minor' );
 715                 } else {
 716                         $mflag = '';
 717                 }
 718
 719                 // Don't show useless link to people who cannot hide revisions
 720                 $canHide = $user->isAllowed( 'deleterevision' );
 721                 if( $canHide || ($rev->getVisibility() && $user->isAllowed('deletedhistory')) ) {
 722                         if( !$rev->userCan( Revision::DELETED_RESTRICTED, $user ) ) {
 723                                 $del = Linker::revDeleteLinkDisabled( $canHide ); // revision was hidden from sysops
 724                         } else {
 725                                 $query = array(
 726                                         'type'   => 'revision',
 727                                         'target' => $page->getPrefixedDbkey(),
 728                                         'ids'    => $rev->getId()
 729                                 );
 730                                 $del = Linker::revDeleteLink( $query,
 731                                         $rev->isDeleted( Revision::DELETED_RESTRICTED ), $canHide );
 732                         }
 733                         $del .= ' ';
 734                 } else {
 735                         $del = '';
 736                 }
 737
 738                 $diffHistLinks = '(' . $difftext . $this->messages['pipe-separator'] . $histlink . ')';
 739                 $ret = "{$del}{$d} {$diffHistLinks}{$chardiff}{$nflag}{$mflag} {$link}{$userlink} {$comment} {$topmarktext}";
 740
 741                 # Denote if username is redacted for this edit
 742                 if( $rev->isDeleted( Revision::DELETED_USER ) ) {
 743                         $ret .= " <strong>" . wfMsgHtml('rev-deleted-user-contribs') . "</strong>";
 744                 }
 745
 746                 # Tags, if any.
 747                 list($tagSummary, $newClasses) = ChangeTags::formatSummaryRow( $row->ts_tags, 'contributions' );
 748                 $classes = array_merge( $classes, $newClasses );
 749                 $ret .= " $tagSummary";
 750
 751                 // Let extensions add data
 752                 wfRunHooks( 'ContributionsLineEnding', array( &$this, &$ret, $row ) );
 753
 754                 $classes = implode( ' ', $classes );
 755                 $ret = "<li class=\"$classes\">$ret</li>\n";
 756                 wfProfileOut( __METHOD__ );
 757                 return $ret;
 758         }
 759
 760         /**
 761          * Get the Database object in use
 762          *
 763          * @return DatabaseBase
 764          */
 765         public function getDatabase() {
 766                 return $this->mDb;
 767         }
 768
 769         /**
 770          * Overwrite Pager function and return a helpful comment
 771          */
 772         function getSqlComment() {
 773                 if ( $this->namespace || $this->deletedOnly ) {
 774                         return 'contributions page filtered for namespace or RevisionDeleted edits'; // potentially slow, see CR r58153
 775                 } else {
 776                         return 'contributions page unfiltered';
 777                 }
 778         }
 779
 780         protected function preventClickjacking() {
 781                 $this->preventClickjacking = true;
 782         }
 783
 784         public function getPreventClickjacking() {
 785                 return $this->preventClickjacking;
 786         }
 787 }