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