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 class SpecialContributions extends IncludableSpecialPage {
  30         protected $opts;
  31
  32         public function __construct() {
  33                 parent::__construct( 'Contributions' );
  34         }
  35
  36         public function execute( $par ) {
  37                 $this->setHeaders();
  38                 $this->outputHeader();
  39                 $out = $this->getOutput();
  40                 $out->addModuleStyles( 'mediawiki.special' );
  41
  42                 $this->opts = array();
  43                 $request = $this->getRequest();
  44
  45                 if ( $par !== null ) {
  46                         $target = $par;
  47                 } else {
  48                         $target = $request->getVal( 'target' );
  49                 }
  50
  51                 // check for radiobox
  52                 if ( $request->getVal( 'contribs' ) == 'newbie' ) {
  53                         $target = 'newbies';
  54                         $this->opts['contribs'] = 'newbie';
  55                 } elseif ( $par === 'newbies' ) { // b/c for WMF
  56                         $target = 'newbies';
  57                         $this->opts['contribs'] = 'newbie';
  58                 } else {
  59                         $this->opts['contribs'] = 'user';
  60                 }
  61
  62                 $this->opts['deletedOnly'] = $request->getBool( 'deletedOnly' );
  63
  64                 if ( !strlen( $target ) ) {
  65                         if ( !$this->including() ) {
  66                                 $out->addHTML( $this->getForm() );
  67                         }
  68
  69                         return;
  70                 }
  71
  72                 $user = $this->getUser();
  73
  74                 $this->opts['limit'] = $request->getInt( 'limit', $user->getOption( 'rclimit' ) );
  75                 $this->opts['target'] = $target;
  76                 $this->opts['topOnly'] = $request->getBool( 'topOnly' );
  77                 $this->opts['newOnly'] = $request->getBool( 'newOnly' );
  78
  79                 $nt = Title::makeTitleSafe( NS_USER, $target );
  80                 if ( !$nt ) {
  81                         $out->addHTML( $this->getForm() );
  82
  83                         return;
  84                 }
  85                 $userObj = User::newFromName( $nt->getText(), false );
  86                 if ( !$userObj ) {
  87                         $out->addHTML( $this->getForm() );
  88
  89                         return;
  90                 }
  91                 $id = $userObj->getID();
  92
  93                 if ( $this->opts['contribs'] != 'newbie' ) {
  94                         $target = $nt->getText();
  95                         $out->addSubtitle( $this->contributionsSub( $userObj ) );
  96                         $out->setHTMLTitle( $this->msg(
  97                                 'pagetitle',
  98                                 $this->msg( 'contributions-title', $target )->plain()
  99                         )->inContentLanguage() );
 100                         $this->getSkin()->setRelevantUser( $userObj );
 101                 } else {
 102                         $out->addSubtitle( $this->msg( 'sp-contributions-newbies-sub' ) );
 103                         $out->setHTMLTitle( $this->msg(
 104                                 'pagetitle',
 105                                 $this->msg( 'sp-contributions-newbies-title' )->plain()
 106                         )->inContentLanguage() );
 107                 }
 108
 109                 if ( ( $ns = $request->getVal( 'namespace', null ) ) !== null && $ns !== '' ) {
 110                         $this->opts['namespace'] = intval( $ns );
 111                 } else {
 112                         $this->opts['namespace'] = '';
 113                 }
 114
 115                 $this->opts['associated'] = $request->getBool( 'associated' );
 116                 $this->opts['nsInvert'] = (bool)$request->getVal( 'nsInvert' );
 117                 $this->opts['tagfilter'] = (string)$request->getVal( 'tagfilter' );
 118
 119                 // Allows reverts to have the bot flag in recent changes. It is just here to
 120                 // be passed in the form at the top of the page
 121                 if ( $user->isAllowed( 'markbotedits' ) && $request->getBool( 'bot' ) ) {
 122                         $this->opts['bot'] = '1';
 123                 }
 124
 125                 $skip = $request->getText( 'offset' ) || $request->getText( 'dir' ) == 'prev';
 126                 # Offset overrides year/month selection
 127                 if ( $skip ) {
 128                         $this->opts['year'] = '';
 129                         $this->opts['month'] = '';
 130                 } else {
 131                         $this->opts['year'] = $request->getIntOrNull( 'year' );
 132                         $this->opts['month'] = $request->getIntOrNull( 'month' );
 133                 }
 134
 135                 $feedType = $request->getVal( 'feed' );
 136
 137                 $feedParams = array(
 138                         'action' => 'feedcontributions',
 139                         'user' => $target,
 140                 );
 141                 if ( $this->opts['topOnly'] ) {
 142                         $feedParams['toponly'] = true;
 143                 }
 144                 if ( $this->opts['newOnly'] ) {
 145                         $feedParams['newonly'] = true;
 146                 }
 147                 if ( $this->opts['deletedOnly'] ) {
 148                         $feedParams['deletedonly'] = true;
 149                 }
 150                 if ( $this->opts['tagfilter'] !== '' ) {
 151                         $feedParams['tagfilter'] = $this->opts['tagfilter'];
 152                 }
 153                 if ( $this->opts['namespace'] !== '' ) {
 154                         $feedParams['namespace'] = $this->opts['namespace'];
 155                 }
 156                 // Don't use year and month for the feed URL, but pass them on if
 157                 // we redirect to API (if $feedType is specified)
 158                 if ( $feedType && $this->opts['year'] !== null ) {
 159                         $feedParams['year'] = $this->opts['year'];
 160                 }
 161                 if ( $feedType && $this->opts['month'] !== null ) {
 162                         $feedParams['month'] = $this->opts['month'];
 163                 }
 164
 165                 if ( $feedType ) {
 166                         // Maintain some level of backwards compatability
 167                         // If people request feeds using the old parameters, redirect to API
 168                         $feedParams['feedformat'] = $feedType;
 169                         $url = wfAppendQuery( wfScript( 'api' ), $feedParams );
 170
 171                         $out->redirect( $url, '301' );
 172
 173                         return;
 174                 }
 175
 176                 // Add RSS/atom links
 177                 $this->addFeedLinks( $feedParams );
 178
 179                 if ( wfRunHooks( 'SpecialContributionsBeforeMainOutput', array( $id, $userObj, $this ) ) ) {
 180                         if ( !$this->including() ) {
 181                                 $out->addHTML( $this->getForm() );
 182                         }
 183                         $pager = new ContribsPager( $this->getContext(), array(
 184                                 'target' => $target,
 185                                 'contribs' => $this->opts['contribs'],
 186                                 'namespace' => $this->opts['namespace'],
 187                                 'tagfilter' => $this->opts['tagfilter'],
 188                                 'year' => $this->opts['year'],
 189                                 'month' => $this->opts['month'],
 190                                 'deletedOnly' => $this->opts['deletedOnly'],
 191                                 'topOnly' => $this->opts['topOnly'],
 192                                 'newOnly' => $this->opts['newOnly'],
 193                                 'nsInvert' => $this->opts['nsInvert'],
 194                                 'associated' => $this->opts['associated'],
 195                         ) );
 196
 197                         if ( !$pager->getNumRows() ) {
 198                                 $out->addWikiMsg( 'nocontribs', $target );
 199                         } else {
 200                                 # Show a message about slave lag, if applicable
 201                                 $lag = wfGetLB()->safeGetLag( $pager->getDatabase() );
 202                                 if ( $lag > 0 ) {
 203                                         $out->showLagWarning( $lag );
 204                                 }
 205
 206                                 $output = $pager->getBody();
 207                                 if ( !$this->including() ) {
 208                                         $output = '<p>' . $pager->getNavigationBar() . '</p>' .
 209                                                 $output .
 210                                                 '<p>' . $pager->getNavigationBar() . '</p>';
 211                                 }
 212                                 $out->addHTML( $output );
 213                         }
 214                         $out->preventClickjacking( $pager->getPreventClickjacking() );
 215
 216                         # Show the appropriate "footer" message - WHOIS tools, etc.
 217                         if ( $this->opts['contribs'] == 'newbie' ) {
 218                                 $message = 'sp-contributions-footer-newbies';
 219                         } elseif ( IP::isIPAddress( $target ) ) {
 220                                 $message = 'sp-contributions-footer-anon';
 221                         } elseif ( $userObj->isAnon() ) {
 222                                 // No message for non-existing users
 223                                 $message = '';
 224                         } else {
 225                                 $message = 'sp-contributions-footer';
 226                         }
 227
 228                         if ( $message ) {
 229                                 if ( !$this->including() ) {
 230                                         if ( !$this->msg( $message, $target )->isDisabled() ) {
 231                                                 $out->wrapWikiMsg(
 232                                                         "<div class='mw-contributions-footer'>\n$1\n</div>",
 233                                                         array( $message, $target ) );
 234                                         }
 235                                 }
 236                         }
 237                 }
 238         }
 239
 240         /**
 241          * Generates the subheading with links
 242          * @param User $userObj User object for the target
 243          * @return string Appropriately-escaped HTML to be output literally
 244          * @todo FIXME: Almost the same as getSubTitle in SpecialDeletedContributions.php.
 245          * Could be combined.
 246          */
 247         protected function contributionsSub( $userObj ) {
 248                 if ( $userObj->isAnon() ) {
 249                         // Show a warning message that the user being searched for doesn't exists
 250                         if ( !User::isIP( $userObj->getName() ) ) {
 251                                 $this->getOutput()->wrapWikiMsg(
 252                                         "<div class=\"mw-userpage-userdoesnotexist error\">\n\$1\n</div>",
 253                                         array(
 254                                                 'contributions-userdoesnotexist',
 255                                                 wfEscapeWikiText( $userObj->getName() ),
 256                                         )
 257                                 );
 258                                 if ( !$this->including() ) {
 259                                         $this->getOutput()->setStatusCode( 404 );
 260                                 }
 261                         }
 262                         $user = htmlspecialchars( $userObj->getName() );
 263                 } else {
 264                         $user = Linker::link( $userObj->getUserPage(), htmlspecialchars( $userObj->getName() ) );
 265                 }
 266                 $nt = $userObj->getUserPage();
 267                 $talk = $userObj->getTalkPage();
 268                 $links = '';
 269                 if ( $talk ) {
 270                         $tools = $this->getUserLinks( $nt, $talk, $userObj );
 271                         $links = $this->getLanguage()->pipeList( $tools );
 272
 273                         // Show a note if the user is blocked and display the last block log entry.
 274                         // Do not expose the autoblocks, since that may lead to a leak of accounts' IPs,
 275                         // and also this will display a totally irrelevant log entry as a current block.
 276                         if ( !$this->including() ) {
 277                                 $block = Block::newFromTarget( $userObj, $userObj );
 278                                 if ( !is_null( $block ) && $block->getType() != Block::TYPE_AUTO ) {
 279                                         if ( $block->getType() == Block::TYPE_RANGE ) {
 280                                                 $nt = MWNamespace::getCanonicalName( NS_USER ) . ':' . $block->getTarget();
 281                                         }
 282
 283                                         $out = $this->getOutput(); // showLogExtract() wants first parameter by reference
 284                                         LogEventsList::showLogExtract(
 285                                                 $out,
 286                                                 'block',
 287                                                 $nt,
 288                                                 '',
 289                                                 array(
 290                                                         'lim' => 1,
 291                                                         'showIfEmpty' => false,
 292                                                         'msgKey' => array(
 293                                                                 $userObj->isAnon() ?
 294                                                                         'sp-contributions-blocked-notice-anon' :
 295                                                                         'sp-contributions-blocked-notice',
 296                                                                 $userObj->getName() # Support GENDER in 'sp-contributions-blocked-notice'
 297                                                         ),
 298                                                         'offset' => '' # don't use WebRequest parameter offset
 299                                                 )
 300                                         );
 301                                 }
 302                         }
 303                 }
 304
 305                 return $this->msg( 'contribsub2' )->rawParams( $user, $links )->params( $userObj->getName() );
 306         }
 307
 308         /**
 309          * Links to different places.
 310          * @param Title $userpage Target user page
 311          * @param Title $talkpage Talk page
 312          * @param User $target Target user object
 313          * @return array
 314          */
 315         public function getUserLinks( Title $userpage, Title $talkpage, User $target ) {
 316
 317                 $id = $target->getId();
 318                 $username = $target->getName();
 319
 320                 $tools[] = Linker::link( $talkpage, $this->msg( 'sp-contributions-talk' )->escaped() );
 321
 322                 if ( ( $id !== null ) || ( $id === null && IP::isIPAddress( $username ) ) ) {
 323                         if ( $this->getUser()->isAllowed( 'block' ) ) { # Block / Change block / Unblock links
 324                                 if ( $target->isBlocked() && $target->getBlock()->getType() != Block::TYPE_AUTO ) {
 325                                         $tools[] = Linker::linkKnown( # Change block link
 326                                                 SpecialPage::getTitleFor( 'Block', $username ),
 327                                                 $this->msg( 'change-blocklink' )->escaped()
 328                                         );
 329                                         $tools[] = Linker::linkKnown( # Unblock link
 330                                                 SpecialPage::getTitleFor( 'Unblock', $username ),
 331                                                 $this->msg( 'unblocklink' )->escaped()
 332                                         );
 333                                 } else { # User is not blocked
 334                                         $tools[] = Linker::linkKnown( # Block link
 335                                                 SpecialPage::getTitleFor( 'Block', $username ),
 336                                                 $this->msg( 'blocklink' )->escaped()
 337                                         );
 338                                 }
 339                         }
 340
 341                         # Block log link
 342                         $tools[] = Linker::linkKnown(
 343                                 SpecialPage::getTitleFor( 'Log', 'block' ),
 344                                 $this->msg( 'sp-contributions-blocklog' )->escaped(),
 345                                 array(),
 346                                 array( 'page' => $userpage->getPrefixedText() )
 347                         );
 348
 349                         # Suppression log link (bug 59120)
 350                         if ( $this->getUser()->isAllowed( 'suppressionlog' ) ) {
 351                                 $tools[] = Linker::linkKnown(
 352                                         SpecialPage::getTitleFor( 'Log', 'suppress' ),
 353                                         $this->msg( 'sp-contributions-suppresslog' )->escaped(),
 354                                         array(),
 355                                         array( 'offender' => $username )
 356                                 );
 357                         }
 358                 }
 359                 # Uploads
 360                 $tools[] = Linker::linkKnown(
 361                         SpecialPage::getTitleFor( 'Listfiles', $username ),
 362                         $this->msg( 'sp-contributions-uploads' )->escaped()
 363                 );
 364
 365                 # Other logs link
 366                 $tools[] = Linker::linkKnown(
 367                         SpecialPage::getTitleFor( 'Log', $username ),
 368                         $this->msg( 'sp-contributions-logs' )->escaped()
 369                 );
 370
 371                 # Add link to deleted user contributions for priviledged users
 372                 if ( $this->getUser()->isAllowed( 'deletedhistory' ) ) {
 373                         $tools[] = Linker::linkKnown(
 374                                 SpecialPage::getTitleFor( 'DeletedContributions', $username ),
 375                                 $this->msg( 'sp-contributions-deleted' )->escaped()
 376                         );
 377                 }
 378
 379                 # Add a link to change user rights for privileged users
 380                 $userrightsPage = new UserrightsPage();
 381                 $userrightsPage->setContext( $this->getContext() );
 382                 if ( $userrightsPage->userCanChangeRights( $target ) ) {
 383                         $tools[] = Linker::linkKnown(
 384                                 SpecialPage::getTitleFor( 'Userrights', $username ),
 385                                 $this->msg( 'sp-contributions-userrights' )->escaped()
 386                         );
 387                 }
 388
 389                 wfRunHooks( 'ContributionsToolLinks', array( $id, $userpage, &$tools ) );
 390
 391                 return $tools;
 392         }
 393
 394         /**
 395          * Generates the namespace selector form with hidden attributes.
 396          * @return string HTML fragment
 397          */
 398         protected function getForm() {
 399                 global $wgScript;
 400
 401                 $this->opts['title'] = $this->getPageTitle()->getPrefixedText();
 402                 if ( !isset( $this->opts['target'] ) ) {
 403                         $this->opts['target'] = '';
 404                 } else {
 405                         $this->opts['target'] = str_replace( '_', ' ', $this->opts['target'] );
 406                 }
 407
 408                 if ( !isset( $this->opts['namespace'] ) ) {
 409                         $this->opts['namespace'] = '';
 410                 }
 411
 412                 if ( !isset( $this->opts['nsInvert'] ) ) {
 413                         $this->opts['nsInvert'] = '';
 414                 }
 415
 416                 if ( !isset( $this->opts['associated'] ) ) {
 417                         $this->opts['associated'] = false;
 418                 }
 419
 420                 if ( !isset( $this->opts['contribs'] ) ) {
 421                         $this->opts['contribs'] = 'user';
 422                 }
 423
 424                 if ( !isset( $this->opts['year'] ) ) {
 425                         $this->opts['year'] = '';
 426                 }
 427
 428                 if ( !isset( $this->opts['month'] ) ) {
 429                         $this->opts['month'] = '';
 430                 }
 431
 432                 if ( $this->opts['contribs'] == 'newbie' ) {
 433                         $this->opts['target'] = '';
 434                 }
 435
 436                 if ( !isset( $this->opts['tagfilter'] ) ) {
 437                         $this->opts['tagfilter'] = '';
 438                 }
 439
 440                 if ( !isset( $this->opts['topOnly'] ) ) {
 441                         $this->opts['topOnly'] = false;
 442                 }
 443
 444                 if ( !isset( $this->opts['newOnly'] ) ) {
 445                         $this->opts['newOnly'] = false;
 446                 }
 447
 448                 $form = Html::openElement(
 449                         'form',
 450                         array(
 451                                 'method' => 'get',
 452                                 'action' => $wgScript,
 453                                 'class' => 'mw-contributions-form'
 454                         )
 455                 );
 456
 457                 # Add hidden params for tracking except for parameters in $skipParameters
 458                 $skipParameters = array(
 459                         'namespace',
 460                         'nsInvert',
 461                         'deletedOnly',
 462                         'target',
 463                         'contribs',
 464                         'year',
 465                         'month',
 466                         'topOnly',
 467                         'newOnly',
 468                         'associated'
 469                 );
 470
 471                 foreach ( $this->opts as $name => $value ) {
 472                         if ( in_array( $name, $skipParameters ) ) {
 473                                 continue;
 474                         }
 475                         $form .= "\t" . Html::hidden( $name, $value ) . "\n";
 476                 }
 477
 478                 $tagFilter = ChangeTags::buildTagFilterSelector( $this->opts['tagfilter'] );
 479
 480                 if ( $tagFilter ) {
 481                         $filterSelection = Html::rawElement(
 482                                 'td',
 483                                 array( 'class' => 'mw-label' ),
 484                                 array_shift( $tagFilter )
 485                         );
 486                         $filterSelection .= Html::rawElement(
 487                                 'td',
 488                                 array( 'class' => 'mw-input' ),
 489                                 implode( '&#160', $tagFilter )
 490                         );
 491                 } else {
 492                         $filterSelection = Html::rawElement( 'td', array( 'colspan' => 2 ), '' );
 493                 }
 494
 495                 $labelNewbies = Xml::radioLabel(
 496                         $this->msg( 'sp-contributions-newbies' )->text(),
 497                         'contribs',
 498                         'newbie',
 499                         'newbie',
 500                         $this->opts['contribs'] == 'newbie',
 501                         array( 'class' => 'mw-input' )
 502                 );
 503                 $labelUsername = Xml::radioLabel(
 504                         $this->msg( 'sp-contributions-username' )->text(),
 505                         'contribs',
 506                         'user',
 507                         'user',
 508                         $this->opts['contribs'] == 'user',
 509                         array( 'class' => 'mw-input' )
 510                 );
 511                 $input = Html::input(
 512                         'target',
 513                         $this->opts['target'],
 514                         'text',
 515                         array( 'size' => '40', 'required' => '', 'class' => 'mw-input' ) +
 516                                 ( $this->opts['target'] ? array() : array( 'autofocus' )
 517                                 )
 518                 );
 519                 $targetSelection = Html::rawElement(
 520                         'td',
 521                         array( 'colspan' => 2 ),
 522                         $labelNewbies . '<br />' . $labelUsername . ' ' . $input . ' '
 523                 );
 524
 525                 $namespaceSelection = Xml::tags(
 526                         'td',
 527                         array( 'class' => 'mw-label' ),
 528                         Xml::label(
 529                                 $this->msg( 'namespace' )->text(),
 530                                 'namespace',
 531                                 ''
 532                         )
 533                 );
 534                 $namespaceSelection .= Html::rawElement(
 535                         'td',
 536                         null,
 537                         Html::namespaceSelector(
 538                                 array( 'selected' => $this->opts['namespace'], 'all' => '' ),
 539                                 array(
 540                                         'name' => 'namespace',
 541                                         'id' => 'namespace',
 542                                         'class' => 'namespaceselector',
 543                                 )
 544                         ) . '&#160;' .
 545                                 Html::rawElement(
 546                                         'span',
 547                                         array( 'style' => 'white-space: nowrap' ),
 548                                         Xml::checkLabel(
 549                                                 $this->msg( 'invert' )->text(),
 550                                                 'nsInvert',
 551                                                 'nsInvert',
 552                                                 $this->opts['nsInvert'],
 553                                                 array(
 554                                                         'title' => $this->msg( 'tooltip-invert' )->text(),
 555                                                         'class' => 'mw-input'
 556                                                 )
 557                                         ) . '&#160;'
 558                                 ) .
 559                                 Html::rawElement( 'span', array( 'style' => 'white-space: nowrap' ),
 560                                         Xml::checkLabel(
 561                                                 $this->msg( 'namespace_association' )->text(),
 562                                                 'associated',
 563                                                 'associated',
 564                                                 $this->opts['associated'],
 565                                                 array(
 566                                                         'title' => $this->msg( 'tooltip-namespace_association' )->text(),
 567                                                         'class' => 'mw-input'
 568                                                 )
 569                                         ) . '&#160;'
 570                                 )
 571                 );
 572
 573                 if ( $this->getUser()->isAllowed( 'deletedhistory' ) ) {
 574                         $deletedOnlyCheck = Html::rawElement(
 575                                 'span',
 576                                 array( 'style' => 'white-space: nowrap' ),
 577                                 Xml::checkLabel(
 578                                         $this->msg( 'history-show-deleted' )->text(),
 579                                         'deletedOnly',
 580                                         'mw-show-deleted-only',
 581                                         $this->opts['deletedOnly'],
 582                                         array( 'class' => 'mw-input' )
 583                                 )
 584                         );
 585                 } else {
 586                         $deletedOnlyCheck = '';
 587                 }
 588
 589                 $checkLabelTopOnly = Html::rawElement(
 590                         'span',
 591                         array( 'style' => 'white-space: nowrap' ),
 592                         Xml::checkLabel(
 593                                 $this->msg( 'sp-contributions-toponly' )->text(),
 594                                 'topOnly',
 595                                 'mw-show-top-only',
 596                                 $this->opts['topOnly'],
 597                                 array( 'class' => 'mw-input' )
 598                         )
 599                 );
 600                 $checkLabelNewOnly = Html::rawElement(
 601                         'span',
 602                         array( 'style' => 'white-space: nowrap' ),
 603                         Xml::checkLabel(
 604                                 $this->msg( 'sp-contributions-newonly' )->text(),
 605                                 'newOnly',
 606                                 'mw-show-new-only',
 607                                 $this->opts['newOnly'],
 608                                 array( 'class' => 'mw-input' )
 609                         )
 610                 );
 611                 $extraOptions = Html::rawElement(
 612                         'td',
 613                         array( 'colspan' => 2 ),
 614                         $deletedOnlyCheck . $checkLabelTopOnly . $checkLabelNewOnly
 615                 );
 616
 617                 $dateSelectionAndSubmit = Xml::tags( 'td', array( 'colspan' => 2 ),
 618                         Xml::dateMenu(
 619                                 $this->opts['year'] === '' ? MWTimestamp::getInstance()->format( 'Y' ) : $this->opts['year'],
 620                                 $this->opts['month']
 621                         ) . ' ' .
 622                                 Xml::submitButton(
 623                                         $this->msg( 'sp-contributions-submit' )->text(),
 624                                         array( 'class' => 'mw-submit' )
 625                                 )
 626                 );
 627
 628                 $form .= Xml::fieldset( $this->msg( 'sp-contributions-search' )->text() );
 629                 $form .= Html::rawElement( 'table', array( 'class' => 'mw-contributions-table' ), "\n" .
 630                         Html::rawElement( 'tr', array(), $targetSelection ) . "\n" .
 631                         Html::rawElement( 'tr', array(), $namespaceSelection ) . "\n" .
 632                         Html::rawElement( 'tr', array(), $filterSelection ) . "\n" .
 633                         Html::rawElement( 'tr', array(), $extraOptions ) . "\n" .
 634                         Html::rawElement( 'tr', array(), $dateSelectionAndSubmit ) . "\n"
 635                 );
 636
 637                 $explain = $this->msg( 'sp-contributions-explain' );
 638                 if ( !$explain->isBlank() ) {
 639                         $form .= "<p id='mw-sp-contributions-explain'>{$explain->parse()}</p>";
 640                 }
 641
 642                 $form .= Xml::closeElement( 'fieldset' ) . Xml::closeElement( 'form' );
 643
 644                 return $form;
 645         }
 646
 647         protected function getGroupName() {
 648                 return 'users';
 649         }
 650 }
 651
 652 /**
 653  * Pager for Special:Contributions
 654  * @ingroup SpecialPage Pager
 655  */
 656 class ContribsPager extends ReverseChronologicalPager {
 657         public $mDefaultDirection = true;
 658         public $messages;
 659         public $target;
 660         public $namespace = '';
 661         public $mDb;
 662         public $preventClickjacking = false;
 663
 664         /** @var DatabaseBase */
 665         public $mDbSecondary;
 666
 667         /**
 668          * @var array
 669          */
 670         protected $mParentLens;
 671
 672         function __construct( IContextSource $context, array $options ) {
 673                 parent::__construct( $context );
 674
 675                 $msgs = array(
 676                         'diff',
 677                         'hist',
 678                         'newarticle',
 679                         'pipe-separator',
 680                         'rev-delundel',
 681                         'rollbacklink',
 682                         'uctop'
 683                 );
 684
 685                 foreach ( $msgs as $msg ) {
 686                         $this->messages[$msg] = $this->msg( $msg )->escaped();
 687                 }
 688
 689                 $this->target = isset( $options['target'] ) ? $options['target'] : '';
 690                 $this->contribs = isset( $options['contribs'] ) ? $options['contribs'] : 'users';
 691                 $this->namespace = isset( $options['namespace'] ) ? $options['namespace'] : '';
 692                 $this->tagFilter = isset( $options['tagfilter'] ) ? $options['tagfilter'] : false;
 693                 $this->nsInvert = isset( $options['nsInvert'] ) ? $options['nsInvert'] : false;
 694                 $this->associated = isset( $options['associated'] ) ? $options['associated'] : false;
 695
 696                 $this->deletedOnly = !empty( $options['deletedOnly'] );
 697                 $this->topOnly = !empty( $options['topOnly'] );
 698                 $this->newOnly = !empty( $options['newOnly'] );
 699
 700                 $year = isset( $options['year'] ) ? $options['year'] : false;
 701                 $month = isset( $options['month'] ) ? $options['month'] : false;
 702                 $this->getDateCond( $year, $month );
 703
 704                 // Most of this code will use the 'contributions' group DB, which can map to slaves
 705                 // with extra user based indexes or partioning by user. The additional metadata
 706                 // queries should use a regular slave since the lookup pattern is not all by user.
 707                 $this->mDbSecondary = wfGetDB( DB_SLAVE ); // any random slave
 708                 $this->mDb = wfGetDB( DB_SLAVE, 'contributions' );
 709         }
 710
 711         function getDefaultQuery() {
 712                 $query = parent::getDefaultQuery();
 713                 $query['target'] = $this->target;
 714
 715                 return $query;
 716         }
 717
 718         /**
 719          * This method basically executes the exact same code as the parent class, though with
 720          * a hook added, to allow extentions to add additional queries.
 721          *
 722          * @param string $offset Index offset, inclusive
 723          * @param int $limit Exact query limit
 724          * @param bool $descending Query direction, false for ascending, true for descending
 725          * @return ResultWrapper
 726          */
 727         function reallyDoQuery( $offset, $limit, $descending ) {
 728                 list( $tables, $fields, $conds, $fname, $options, $join_conds ) = $this->buildQueryInfo(
 729                         $offset,
 730                         $limit,
 731                         $descending
 732                 );
 733                 $pager = $this;
 734
 735                 /*
 736                  * This hook will allow extensions to add in additional queries, so they can get their data
 737                  * in My Contributions as well. Extensions should append their results to the $data array.
 738                  *
 739                  * Extension queries have to implement the navbar requirement as well. They should
 740                  * - have a column aliased as $pager->getIndexField()
 741                  * - have LIMIT set
 742                  * - have a WHERE-clause that compares the $pager->getIndexField()-equivalent column to the offset
 743                  * - have the ORDER BY specified based upon the details provided by the navbar
 744                  *
 745                  * See includes/Pager.php buildQueryInfo() method on how to build LIMIT, WHERE & ORDER BY
 746                  *
 747                  * &$data: an array of results of all contribs queries
 748                  * $pager: the ContribsPager object hooked into
 749                  * $offset: see phpdoc above
 750                  * $limit: see phpdoc above
 751                  * $descending: see phpdoc above
 752                  */
 753                 $data = array( $this->mDb->select(
 754                         $tables, $fields, $conds, $fname, $options, $join_conds
 755                 ) );
 756                 wfRunHooks(
 757                         'ContribsPager::reallyDoQuery',
 758                         array( &$data, $pager, $offset, $limit, $descending )
 759                 );
 760
 761                 $result = array();
 762
 763                 // loop all results and collect them in an array
 764                 foreach ( $data as $query ) {
 765                         foreach ( $query as $i => $row ) {
 766                                 // use index column as key, allowing us to easily sort in PHP
 767                                 $result[$row->{$this->getIndexField()} . "-$i"] = $row;
 768                         }
 769                 }
 770
 771                 // sort results
 772                 if ( $descending ) {
 773                         ksort( $result );
 774                 } else {
 775                         krsort( $result );
 776                 }
 777
 778                 // enforce limit
 779                 $result = array_slice( $result, 0, $limit );
 780
 781                 // get rid of array keys
 782                 $result = array_values( $result );
 783
 784                 return new FakeResultWrapper( $result );
 785         }
 786
 787         function getQueryInfo() {
 788                 list( $tables, $index, $userCond, $join_cond ) = $this->getUserCond();
 789
 790                 $user = $this->getUser();
 791                 $conds = array_merge( $userCond, $this->getNamespaceCond() );
 792
 793                 // Paranoia: avoid brute force searches (bug 17342)
 794                 if ( !$user->isAllowed( 'deletedhistory' ) ) {
 795                         $conds[] = $this->mDb->bitAnd( 'rev_deleted', Revision::DELETED_USER ) . ' = 0';
 796                 } elseif ( !$user->isAllowedAny( 'suppressrevision', 'viewsuppressed' ) ) {
 797                         $conds[] = $this->mDb->bitAnd( 'rev_deleted', Revision::SUPPRESSED_USER ) .
 798                                 ' != ' . Revision::SUPPRESSED_USER;
 799                 }
 800
 801                 # Don't include orphaned revisions
 802                 $join_cond['page'] = Revision::pageJoinCond();
 803                 # Get the current user name for accounts
 804                 $join_cond['user'] = Revision::userJoinCond();
 805
 806                 $options = array();
 807                 if ( $index ) {
 808                         $options['USE INDEX'] = array( 'revision' => $index );
 809                 }
 810
 811                 $queryInfo = array(
 812                         'tables' => $tables,
 813                         'fields' => array_merge(
 814                                 Revision::selectFields(),
 815                                 Revision::selectUserFields(),
 816                                 array( 'page_namespace', 'page_title', 'page_is_new',
 817                                         'page_latest', 'page_is_redirect', 'page_len' )
 818                         ),
 819                         'conds' => $conds,
 820                         'options' => $options,
 821                         'join_conds' => $join_cond
 822                 );
 823
 824                 ChangeTags::modifyDisplayQuery(
 825                         $queryInfo['tables'],
 826                         $queryInfo['fields'],
 827                         $queryInfo['conds'],
 828                         $queryInfo['join_conds'],
 829                         $queryInfo['options'],
 830                         $this->tagFilter
 831                 );
 832
 833                 wfRunHooks( 'ContribsPager::getQueryInfo', array( &$this, &$queryInfo ) );
 834
 835                 return $queryInfo;
 836         }
 837
 838         function getUserCond() {
 839                 $condition = array();
 840                 $join_conds = array();
 841                 $tables = array( 'revision', 'page', 'user' );
 842                 $index = false;
 843                 if ( $this->contribs == 'newbie' ) {
 844                         $max = $this->mDb->selectField( 'user', 'max(user_id)', false, __METHOD__ );
 845                         $condition[] = 'rev_user >' . (int)( $max - $max / 100 );
 846                         # ignore local groups with the bot right
 847                         # @todo FIXME: Global groups may have 'bot' rights
 848                         $groupsWithBotPermission = User::getGroupsWithPermission( 'bot' );
 849                         if ( count( $groupsWithBotPermission ) ) {
 850                                 $tables[] = 'user_groups';
 851                                 $condition[] = 'ug_group IS NULL';
 852                                 $join_conds['user_groups'] = array(
 853                                         'LEFT JOIN', array(
 854                                                 'ug_user = rev_user',
 855                                                 'ug_group' => $groupsWithBotPermission
 856                                         )
 857                                 );
 858                         }
 859                 } else {
 860                         $uid = User::idFromName( $this->target );
 861                         if ( $uid ) {
 862                                 $condition['rev_user'] = $uid;
 863                                 $index = 'user_timestamp';
 864                         } else {
 865                                 $condition['rev_user_text'] = $this->target;
 866                                 $index = 'usertext_timestamp';
 867                         }
 868                 }
 869
 870                 if ( $this->deletedOnly ) {
 871                         $condition[] = 'rev_deleted != 0';
 872                 }
 873
 874                 if ( $this->topOnly ) {
 875                         $condition[] = 'rev_id = page_latest';
 876                 }
 877
 878                 if ( $this->newOnly ) {
 879                         $condition[] = 'rev_parent_id = 0';
 880                 }
 881
 882                 return array( $tables, $index, $condition, $join_conds );
 883         }
 884
 885         function getNamespaceCond() {
 886                 if ( $this->namespace !== '' ) {
 887                         $selectedNS = $this->mDb->addQuotes( $this->namespace );
 888                         $eq_op = $this->nsInvert ? '!=' : '=';
 889                         $bool_op = $this->nsInvert ? 'AND' : 'OR';
 890
 891                         if ( !$this->associated ) {
 892                                 return array( "page_namespace $eq_op $selectedNS" );
 893                         }
 894
 895                         $associatedNS = $this->mDb->addQuotes(
 896                                 MWNamespace::getAssociated( $this->namespace )
 897                         );
 898
 899                         return array(
 900                                 "page_namespace $eq_op $selectedNS " .
 901                                         $bool_op .
 902                                         " page_namespace $eq_op $associatedNS"
 903                         );
 904                 }
 905
 906                 return array();
 907         }
 908
 909         function getIndexField() {
 910                 return 'rev_timestamp';
 911         }
 912
 913         function doBatchLookups() {
 914                 # Do a link batch query
 915                 $this->mResult->seek( 0 );
 916                 $revIds = array();
 917                 $batch = new LinkBatch();
 918                 # Give some pointers to make (last) links
 919                 foreach ( $this->mResult as $row ) {
 920                         if ( isset( $row->rev_parent_id ) && $row->rev_parent_id ) {
 921                                 $revIds[] = $row->rev_parent_id;
 922                         }
 923                         if ( isset( $row->rev_id ) ) {
 924                                 if ( $this->contribs === 'newbie' ) { // multiple users
 925                                         $batch->add( NS_USER, $row->user_name );
 926                                         $batch->add( NS_USER_TALK, $row->user_name );
 927                                 }
 928                                 $batch->add( $row->page_namespace, $row->page_title );
 929                         }
 930                 }
 931                 $this->mParentLens = Revision::getParentLengths( $this->mDbSecondary, $revIds );
 932                 $batch->execute();
 933                 $this->mResult->seek( 0 );
 934         }
 935
 936         /**
 937          * @return string
 938          */
 939         function getStartBody() {
 940                 return "<ul>\n";
 941         }
 942
 943         /**
 944          * @return string
 945          */
 946         function getEndBody() {
 947                 return "</ul>\n";
 948         }
 949
 950         /**
 951          * Generates each row in the contributions list.
 952          *
 953          * Contributions which are marked "top" are currently on top of the history.
 954          * For these contributions, a [rollback] link is shown for users with roll-
 955          * back privileges. The rollback link restores the most recent version that
 956          * was not written by the target user.
 957          *
 958          * @todo This would probably look a lot nicer in a table.
 959          * @param object $row
 960          * @return string
 961          */
 962         function formatRow( $row ) {
 963                 wfProfileIn( __METHOD__ );
 964
 965                 $ret = '';
 966                 $classes = array();
 967
 968                 /*
 969                  * There may be more than just revision rows. To make sure that we'll only be processing
 970                  * revisions here, let's _try_ to build a revision out of our row (without displaying
 971                  * notices though) and then trying to grab data from the built object. If we succeed,
 972                  * we're definitely dealing with revision data and we may proceed, if not, we'll leave it
 973                  * to extensions to subscribe to the hook to parse the row.
 974                  */
 975                 wfSuppressWarnings();
 976                 try {
 977                         $rev = new Revision( $row );
 978                         $validRevision = (bool)$rev->getId();
 979                 } catch ( MWException $e ) {
 980                         $validRevision = false;
 981                 }
 982                 wfRestoreWarnings();
 983
 984                 if ( $validRevision ) {
 985                         $classes = array();
 986
 987                         $page = Title::newFromRow( $row );
 988                         $link = Linker::link(
 989                                 $page,
 990                                 htmlspecialchars( $page->getPrefixedText() ),
 991                                 array( 'class' => 'mw-contributions-title' ),
 992                                 $page->isRedirect() ? array( 'redirect' => 'no' ) : array()
 993                         );
 994                         # Mark current revisions
 995                         $topmarktext = '';
 996                         $user = $this->getUser();
 997                         if ( $row->rev_id == $row->page_latest ) {
 998                                 $topmarktext .= '<span class="mw-uctop">' . $this->messages['uctop'] . '</span>';
 999                                 # Add rollback link
1000                                 if ( !$row->page_is_new && $page->quickUserCan( 'rollback', $user )
1001                                         && $page->quickUserCan( 'edit', $user )
1002                                 ) {
1003                                         $this->preventClickjacking();
1004                                         $topmarktext .= ' ' . Linker::generateRollback( $rev, $this->getContext() );
1005                                 }
1006                         }
1007                         # Is there a visible previous revision?
1008                         if ( $rev->userCan( Revision::DELETED_TEXT, $user ) && $rev->getParentId() !== 0 ) {
1009                                 $difftext = Linker::linkKnown(
1010                                         $page,
1011                                         $this->messages['diff'],
1012                                         array(),
1013                                         array(
1014                                                 'diff' => 'prev',
1015                                                 'oldid' => $row->rev_id
1016                                         )
1017                                 );
1018                         } else {
1019                                 $difftext = $this->messages['diff'];
1020                         }
1021                         $histlink = Linker::linkKnown(
1022                                 $page,
1023                                 $this->messages['hist'],
1024                                 array(),
1025                                 array( 'action' => 'history' )
1026                         );
1027
1028                         if ( $row->rev_parent_id === null ) {
1029                                 // For some reason rev_parent_id isn't populated for this row.
1030                                 // Its rumoured this is true on wikipedia for some revisions (bug 34922).
1031                                 // Next best thing is to have the total number of bytes.
1032                                 $chardiff = ' <span class="mw-changeslist-separator">. .</span> ';
1033                                 $chardiff .= Linker::formatRevisionSize( $row->rev_len );
1034                                 $chardiff .= ' <span class="mw-changeslist-separator">. .</span> ';
1035                         } else {
1036                                 $parentLen = 0;
1037                                 if ( isset( $this->mParentLens[$row->rev_parent_id] ) ) {
1038                                         $parentLen = $this->mParentLens[$row->rev_parent_id];
1039                                 }
1040
1041                                 $chardiff = ' <span class="mw-changeslist-separator">. .</span> ';
1042                                 $chardiff .= ChangesList::showCharacterDifference(
1043                                         $parentLen,
1044                                         $row->rev_len,
1045                                         $this->getContext()
1046                                 );
1047                                 $chardiff .= ' <span class="mw-changeslist-separator">. .</span> ';
1048                         }
1049
1050                         $lang = $this->getLanguage();
1051                         $comment = $lang->getDirMark() . Linker::revComment( $rev, false, true );
1052                         $date = $lang->userTimeAndDate( $row->rev_timestamp, $user );
1053                         if ( $rev->userCan( Revision::DELETED_TEXT, $user ) ) {
1054                                 $d = Linker::linkKnown(
1055                                         $page,
1056                                         htmlspecialchars( $date ),
1057                                         array( 'class' => 'mw-changeslist-date' ),
1058                                         array( 'oldid' => intval( $row->rev_id ) )
1059                                 );
1060                         } else {
1061                                 $d = htmlspecialchars( $date );
1062                         }
1063                         if ( $rev->isDeleted( Revision::DELETED_TEXT ) ) {
1064                                 $d = '<span class="history-deleted">' . $d . '</span>';
1065                         }
1066
1067                         # Show user names for /newbies as there may be different users.
1068                         # Note that we already excluded rows with hidden user names.
1069                         if ( $this->contribs == 'newbie' ) {
1070                                 $userlink = ' . . ' . $lang->getDirMark()
1071                                         . Linker::userLink( $rev->getUser(), $rev->getUserText() );
1072                                 $userlink .= ' ' . $this->msg( 'parentheses' )->rawParams(
1073                                         Linker::userTalkLink( $rev->getUser(), $rev->getUserText() ) )->escaped() . ' ';
1074                         } else {
1075                                 $userlink = '';
1076                         }
1077
1078                         if ( $rev->getParentId() === 0 ) {
1079                                 $nflag = ChangesList::flag( 'newpage' );
1080                         } else {
1081                                 $nflag = '';
1082                         }
1083
1084                         if ( $rev->isMinor() ) {
1085                                 $mflag = ChangesList::flag( 'minor' );
1086                         } else {
1087                                 $mflag = '';
1088                         }
1089
1090                         $del = Linker::getRevDeleteLink( $user, $rev, $page );
1091                         if ( $del !== '' ) {
1092                                 $del .= ' ';
1093                         }
1094
1095                         $diffHistLinks = $this->msg( 'parentheses' )
1096                                 ->rawParams( $difftext . $this->messages['pipe-separator'] . $histlink )
1097                                 ->escaped();
1098                         $ret = "{$del}{$d} {$diffHistLinks}{$chardiff}{$nflag}{$mflag} ";
1099                         $ret .= "{$link}{$userlink} {$comment} {$topmarktext}";
1100
1101                         # Denote if username is redacted for this edit
1102                         if ( $rev->isDeleted( Revision::DELETED_USER ) ) {
1103                                 $ret .= " <strong>" .
1104                                         $this->msg( 'rev-deleted-user-contribs' )->escaped() .
1105                                         "</strong>";
1106                         }
1107
1108                         # Tags, if any.
1109                         list( $tagSummary, $newClasses ) = ChangeTags::formatSummaryRow(
1110                                 $row->ts_tags,
1111                                 'contributions'
1112                         );
1113                         $classes = array_merge( $classes, $newClasses );
1114                         $ret .= " $tagSummary";
1115                 }
1116
1117                 // Let extensions add data
1118                 wfRunHooks( 'ContributionsLineEnding', array( $this, &$ret, $row, &$classes ) );
1119
1120                 if ( $classes === array() && $ret === '' ) {
1121                         wfDebug( "Dropping Special:Contribution row that could not be formatted\n" );
1122                         $ret = "<!-- Could not format Special:Contribution row. -->\n";
1123                 } else {
1124                         $ret = Html::rawElement( 'li', array( 'class' => $classes ), $ret ) . "\n";
1125                 }
1126
1127                 wfProfileOut( __METHOD__ );
1128
1129                 return $ret;
1130         }
1131
1132         /**
1133          * Overwrite Pager function and return a helpful comment
1134          * @return string
1135          */
1136         function getSqlComment() {
1137                 if ( $this->namespace || $this->deletedOnly ) {
1138                         // potentially slow, see CR r58153
1139                         return 'contributions page filtered for namespace or RevisionDeleted edits';
1140                 } else {
1141                         return 'contributions page unfiltered';
1142                 }
1143         }
1144
1145         protected function preventClickjacking() {
1146                 $this->preventClickjacking = true;
1147         }
1148
1149         /**
1150          * @return bool
1151          */
1152         public function getPreventClickjacking() {
1153                 return $this->preventClickjacking;
1154         }
1155 }