includes/specials/pagers/ContribsPager.php

   1 <?php
   2 /**
   3  * This program is free software; you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation; either version 2 of the License, or
   6  * (at your option) any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  16  * http://www.gnu.org/copyleft/gpl.html
  17  *
  18  * @file
  19  * @ingroup Pager
  20  */
  21
  22 /**
  23  * Pager for Special:Contributions
  24  * @ingroup Pager
  25  */
  26 use MediaWiki\MediaWikiServices;
  27 use Wikimedia\Rdbms\IResultWrapper;
  28 use Wikimedia\Rdbms\FakeResultWrapper;
  29 use Wikimedia\Rdbms\IDatabase;
  30
  31 class ContribsPager extends RangeChronologicalPager {
  32
  33         public $mDefaultDirection = IndexPager::DIR_DESCENDING;
  34         public $messages;
  35         public $target;
  36         public $namespace = '';
  37         public $mDb;
  38         public $preventClickjacking = false;
  39
  40         /** @var IDatabase */
  41         public $mDbSecondary;
  42
  43         /**
  44          * @var array
  45          */
  46         protected $mParentLens;
  47
  48         /**
  49          * @var TemplateParser
  50          */
  51         protected $templateParser;
  52
  53         function __construct( IContextSource $context, array $options ) {
  54                 parent::__construct( $context );
  55
  56                 $msgs = [
  57                         'diff',
  58                         'hist',
  59                         'pipe-separator',
  60                         'uctop'
  61                 ];
  62
  63                 foreach ( $msgs as $msg ) {
  64                         $this->messages[$msg] = $this->msg( $msg )->escaped();
  65                 }
  66
  67                 $this->target = $options['target'] ?? '';
  68                 $this->contribs = $options['contribs'] ?? 'users';
  69                 $this->namespace = $options['namespace'] ?? '';
  70                 $this->tagFilter = $options['tagfilter'] ?? false;
  71                 $this->nsInvert = $options['nsInvert'] ?? false;
  72                 $this->associated = $options['associated'] ?? false;
  73
  74                 $this->deletedOnly = !empty( $options['deletedOnly'] );
  75                 $this->topOnly = !empty( $options['topOnly'] );
  76                 $this->newOnly = !empty( $options['newOnly'] );
  77                 $this->hideMinor = !empty( $options['hideMinor'] );
  78
  79                 // Date filtering: use timestamp if available
  80                 $startTimestamp = '';
  81                 $endTimestamp = '';
  82                 if ( $options['start'] ) {
  83                         $startTimestamp = $options['start'] . ' 00:00:00';
  84                 }
  85                 if ( $options['end'] ) {
  86                         $endTimestamp = $options['end'] . ' 23:59:59';
  87                 }
  88                 $this->getDateRangeCond( $startTimestamp, $endTimestamp );
  89
  90                 // Most of this code will use the 'contributions' group DB, which can map to replica DBs
  91                 // with extra user based indexes or partioning by user. The additional metadata
  92                 // queries should use a regular replica DB since the lookup pattern is not all by user.
  93                 $this->mDbSecondary = wfGetDB( DB_REPLICA ); // any random replica DB
  94                 $this->mDb = wfGetDB( DB_REPLICA, 'contributions' );
  95                 $this->templateParser = new TemplateParser();
  96         }
  97
  98         function getDefaultQuery() {
  99                 $query = parent::getDefaultQuery();
 100                 $query['target'] = $this->target;
 101
 102                 return $query;
 103         }
 104
 105         /**
 106          * This method basically executes the exact same code as the parent class, though with
 107          * a hook added, to allow extensions to add additional queries.
 108          *
 109          * @param string $offset Index offset, inclusive
 110          * @param int $limit Exact query limit
 111          * @param bool $descending Query direction, false for ascending, true for descending
 112          * @return IResultWrapper
 113          */
 114         function reallyDoQuery( $offset, $limit, $descending ) {
 115                 list( $tables, $fields, $conds, $fname, $options, $join_conds ) = $this->buildQueryInfo(
 116                         $offset,
 117                         $limit,
 118                         $descending
 119                 );
 120
 121                 /*
 122                  * This hook will allow extensions to add in additional queries, so they can get their data
 123                  * in My Contributions as well. Extensions should append their results to the $data array.
 124                  *
 125                  * Extension queries have to implement the navbar requirement as well. They should
 126                  * - have a column aliased as $pager->getIndexField()
 127                  * - have LIMIT set
 128                  * - have a WHERE-clause that compares the $pager->getIndexField()-equivalent column to the offset
 129                  * - have the ORDER BY specified based upon the details provided by the navbar
 130                  *
 131                  * See includes/Pager.php buildQueryInfo() method on how to build LIMIT, WHERE & ORDER BY
 132                  *
 133                  * &$data: an array of results of all contribs queries
 134                  * $pager: the ContribsPager object hooked into
 135                  * $offset: see phpdoc above
 136                  * $limit: see phpdoc above
 137                  * $descending: see phpdoc above
 138                  */
 139                 $data = [ $this->mDb->select(
 140                         $tables, $fields, $conds, $fname, $options, $join_conds
 141                 ) ];
 142                 Hooks::run(
 143                         'ContribsPager::reallyDoQuery',
 144                         [ &$data, $this, $offset, $limit, $descending ]
 145                 );
 146
 147                 $result = [];
 148
 149                 // loop all results and collect them in an array
 150                 foreach ( $data as $query ) {
 151                         foreach ( $query as $i => $row ) {
 152                                 // use index column as key, allowing us to easily sort in PHP
 153                                 $result[$row->{$this->getIndexField()} . "-$i"] = $row;
 154                         }
 155                 }
 156
 157                 // sort results
 158                 if ( $descending ) {
 159                         ksort( $result );
 160                 } else {
 161                         krsort( $result );
 162                 }
 163
 164                 // enforce limit
 165                 $result = array_slice( $result, 0, $limit );
 166
 167                 // get rid of array keys
 168                 $result = array_values( $result );
 169
 170                 return new FakeResultWrapper( $result );
 171         }
 172
 173         function getQueryInfo() {
 174                 $revQuery = Revision::getQueryInfo( [ 'page', 'user' ] );
 175                 $queryInfo = [
 176                         'tables' => $revQuery['tables'],
 177                         'fields' => array_merge( $revQuery['fields'], [ 'page_is_new' ] ),
 178                         'conds' => [],
 179                         'options' => [],
 180                         'join_conds' => $revQuery['joins'],
 181                 ];
 182
 183                 if ( $this->contribs == 'newbie' ) {
 184                         $max = $this->mDb->selectField( 'user', 'max(user_id)', '', __METHOD__ );
 185                         $queryInfo['conds'][] = $revQuery['fields']['rev_user'] . ' >' . (int)( $max - $max / 100 );
 186                         # ignore local groups with the bot right
 187                         # @todo FIXME: Global groups may have 'bot' rights
 188                         $groupsWithBotPermission = User::getGroupsWithPermission( 'bot' );
 189                         if ( count( $groupsWithBotPermission ) ) {
 190                                 $queryInfo['tables'][] = 'user_groups';
 191                                 $queryInfo['conds'][] = 'ug_group IS NULL';
 192                                 $queryInfo['join_conds']['user_groups'] = [
 193                                         'LEFT JOIN', [
 194                                                 'ug_user = ' . $revQuery['fields']['rev_user'],
 195                                                 'ug_group' => $groupsWithBotPermission,
 196                                                 'ug_expiry IS NULL OR ug_expiry >= ' .
 197                                                         $this->mDb->addQuotes( $this->mDb->timestamp() )
 198                                         ]
 199                                 ];
 200                         }
 201                         // (T140537) Disallow looking too far in the past for 'newbies' queries. If the user requested
 202                         // a timestamp offset far in the past such that there are no edits by users with user_ids in
 203                         // the range, we would end up scanning all revisions from that offset until start of time.
 204                         $queryInfo['conds'][] = 'rev_timestamp > ' .
 205                                 $this->mDb->addQuotes( $this->mDb->timestamp( wfTimestamp() - 30 * 24 * 60 * 60 ) );
 206                 } else {
 207                         $user = User::newFromName( $this->target, false );
 208                         $ipRangeConds = $user->isAnon() ? $this->getIpRangeConds( $this->mDb, $this->target ) : null;
 209                         if ( $ipRangeConds ) {
 210                                 $queryInfo['tables'][] = 'ip_changes';
 211                                 /**
 212                                  * These aliases make `ORDER BY rev_timestamp, rev_id` from {@see getIndexField} and
 213                                  * {@see getExtraSortFields} use the replicated `ipc_rev_timestamp` and `ipc_rev_id`
 214                                  * columns from the `ip_changes` table, for more efficient queries.
 215                                  * @see https://phabricator.wikimedia.org/T200259#4832318
 216                                  */
 217                                 $queryInfo['fields'] = array_merge(
 218                                         [
 219                                                 'rev_timestamp' => 'ipc_rev_timestamp',
 220                                                 'rev_id' => 'ipc_rev_id',
 221                                         ],
 222                                         array_diff( $queryInfo['fields'], [
 223                                                 'rev_timestamp',
 224                                                 'rev_id',
 225                                         ] )
 226                                 );
 227                                 $queryInfo['join_conds']['ip_changes'] = [
 228                                         'LEFT JOIN', [ 'ipc_rev_id = rev_id' ]
 229                                 ];
 230                                 $queryInfo['conds'][] = $ipRangeConds;
 231                         } else {
 232                                 // tables and joins are already handled by Revision::getQueryInfo()
 233                                 $conds = ActorMigration::newMigration()->getWhere( $this->mDb, 'rev_user', $user );
 234                                 $queryInfo['conds'][] = $conds['conds'];
 235                                 // Force the appropriate index to avoid bad query plans (T189026)
 236                                 if ( isset( $conds['orconds']['actor'] ) ) {
 237                                         // @todo: This will need changing when revision_comment_temp goes away
 238                                         $queryInfo['options']['USE INDEX']['temp_rev_user'] = 'actor_timestamp';
 239                                         // Alias 'rev_timestamp' => 'revactor_timestamp' so "ORDER BY rev_timestamp" is interpreted to
 240                                         // use revactor_timestamp instead.
 241                                         $queryInfo['fields'] = array_merge(
 242                                                 array_diff( $queryInfo['fields'], [ 'rev_timestamp' ] ),
 243                                                 [ 'rev_timestamp' => 'revactor_timestamp' ]
 244                                         );
 245                                 } else {
 246                                         $queryInfo['options']['USE INDEX']['revision'] =
 247                                                 isset( $conds['orconds']['userid'] ) ? 'user_timestamp' : 'usertext_timestamp';
 248                                 }
 249                         }
 250                 }
 251
 252                 if ( $this->deletedOnly ) {
 253                         $queryInfo['conds'][] = 'rev_deleted != 0';
 254                 }
 255
 256                 if ( $this->topOnly ) {
 257                         $queryInfo['conds'][] = 'rev_id = page_latest';
 258                 }
 259
 260                 if ( $this->newOnly ) {
 261                         $queryInfo['conds'][] = 'rev_parent_id = 0';
 262                 }
 263
 264                 if ( $this->hideMinor ) {
 265                         $queryInfo['conds'][] = 'rev_minor_edit = 0';
 266                 }
 267
 268                 $user = $this->getUser();
 269                 $queryInfo['conds'] = array_merge( $queryInfo['conds'], $this->getNamespaceCond() );
 270
 271                 // Paranoia: avoid brute force searches (T19342)
 272                 if ( !$user->isAllowed( 'deletedhistory' ) ) {
 273                         $queryInfo['conds'][] = $this->mDb->bitAnd( 'rev_deleted', Revision::DELETED_USER ) . ' = 0';
 274                 } elseif ( !$user->isAllowedAny( 'suppressrevision', 'viewsuppressed' ) ) {
 275                         $queryInfo['conds'][] = $this->mDb->bitAnd( 'rev_deleted', Revision::SUPPRESSED_USER ) .
 276                                 ' != ' . Revision::SUPPRESSED_USER;
 277                 }
 278
 279                 // For IPv6, we use ipc_rev_timestamp on ip_changes as the index field,
 280                 // which will be referenced when parsing the results of a query.
 281                 if ( self::isQueryableRange( $this->target ) ) {
 282                         $queryInfo['fields'][] = 'ipc_rev_timestamp';
 283                 }
 284
 285                 ChangeTags::modifyDisplayQuery(
 286                         $queryInfo['tables'],
 287                         $queryInfo['fields'],
 288                         $queryInfo['conds'],
 289                         $queryInfo['join_conds'],
 290                         $queryInfo['options'],
 291                         $this->tagFilter
 292                 );
 293
 294                 // Avoid PHP 7.1 warning from passing $this by reference
 295                 $pager = $this;
 296                 Hooks::run( 'ContribsPager::getQueryInfo', [ &$pager, &$queryInfo ] );
 297
 298                 return $queryInfo;
 299         }
 300
 301         function getNamespaceCond() {
 302                 if ( $this->namespace !== '' ) {
 303                         $selectedNS = $this->mDb->addQuotes( $this->namespace );
 304                         $eq_op = $this->nsInvert ? '!=' : '=';
 305                         $bool_op = $this->nsInvert ? 'AND' : 'OR';
 306
 307                         if ( !$this->associated ) {
 308                                 return [ "page_namespace $eq_op $selectedNS" ];
 309                         }
 310
 311                         $associatedNS = $this->mDb->addQuotes(
 312                                 MWNamespace::getAssociated( $this->namespace )
 313                         );
 314
 315                         return [
 316                                 "page_namespace $eq_op $selectedNS " .
 317                                 $bool_op .
 318                                 " page_namespace $eq_op $associatedNS"
 319                         ];
 320                 }
 321
 322                 return [];
 323         }
 324
 325         /**
 326          * Get SQL conditions for an IP range, if applicable
 327          * @param IDatabase      $db
 328          * @param string         $ip The IP address or CIDR
 329          * @return string|false  SQL for valid IP ranges, false if invalid
 330          */
 331         private function getIpRangeConds( $db, $ip ) {
 332                 // First make sure it is a valid range and they are not outside the CIDR limit
 333                 if ( !$this->isQueryableRange( $ip ) ) {
 334                         return false;
 335                 }
 336
 337                 list( $start, $end ) = IP::parseRange( $ip );
 338
 339                 return 'ipc_hex BETWEEN ' . $db->addQuotes( $start ) . ' AND ' . $db->addQuotes( $end );
 340         }
 341
 342         /**
 343          * Is the given IP a range and within the CIDR limit?
 344          *
 345          * @param string $ipRange
 346          * @return bool True if it is valid
 347          * @since 1.30
 348          */
 349         public function isQueryableRange( $ipRange ) {
 350                 $limits = $this->getConfig()->get( 'RangeContributionsCIDRLimit' );
 351
 352                 $bits = IP::parseCIDR( $ipRange )[1];
 353                 if (
 354                         ( $bits === false ) ||
 355                         ( IP::isIPv4( $ipRange ) && $bits < $limits['IPv4'] ) ||
 356                         ( IP::isIPv6( $ipRange ) && $bits < $limits['IPv6'] )
 357                 ) {
 358                         return false;
 359                 }
 360
 361                 return true;
 362         }
 363
 364         /**
 365          * @return string
 366          */
 367         public function getIndexField() {
 368                 // Note this is run via parent::__construct() *before* $this->target is set!
 369                 return 'rev_timestamp';
 370         }
 371
 372         /**
 373          * @return string[]
 374          */
 375         protected function getExtraSortFields() {
 376                 // Note this is run via parent::__construct() *before* $this->target is set!
 377                 return [ 'rev_id' ];
 378         }
 379
 380         function doBatchLookups() {
 381                 # Do a link batch query
 382                 $this->mResult->seek( 0 );
 383                 $parentRevIds = [];
 384                 $this->mParentLens = [];
 385                 $batch = new LinkBatch();
 386                 $isIpRange = $this->isQueryableRange( $this->target );
 387                 # Give some pointers to make (last) links
 388                 foreach ( $this->mResult as $row ) {
 389                         if ( isset( $row->rev_parent_id ) && $row->rev_parent_id ) {
 390                                 $parentRevIds[] = $row->rev_parent_id;
 391                         }
 392                         if ( isset( $row->rev_id ) ) {
 393                                 $this->mParentLens[$row->rev_id] = $row->rev_len;
 394                                 if ( $this->contribs === 'newbie' ) { // multiple users
 395                                         $batch->add( NS_USER, $row->user_name );
 396                                         $batch->add( NS_USER_TALK, $row->user_name );
 397                                 } elseif ( $isIpRange ) {
 398                                         // If this is an IP range, batch the IP's talk page
 399                                         $batch->add( NS_USER_TALK, $row->rev_user_text );
 400                                 }
 401                                 $batch->add( $row->page_namespace, $row->page_title );
 402                         }
 403                 }
 404                 # Fetch rev_len for revisions not already scanned above
 405                 $this->mParentLens += Revision::getParentLengths(
 406                         $this->mDbSecondary,
 407                         array_diff( $parentRevIds, array_keys( $this->mParentLens ) )
 408                 );
 409                 $batch->execute();
 410                 $this->mResult->seek( 0 );
 411         }
 412
 413         /**
 414          * @return string
 415          */
 416         function getStartBody() {
 417                 return "<ul class=\"mw-contributions-list\">\n";
 418         }
 419
 420         /**
 421          * @return string
 422          */
 423         function getEndBody() {
 424                 return "</ul>\n";
 425         }
 426
 427         /**
 428          * Check whether the revision associated is valid for formatting. If has no associated revision
 429          * id then null is returned.
 430          *
 431          * @param object $row
 432          * @return Revision|null
 433          */
 434         public function tryToCreateValidRevision( $row ) {
 435                 /*
 436                  * There may be more than just revision rows. To make sure that we'll only be processing
 437                  * revisions here, let's _try_ to build a revision out of our row (without displaying
 438                  * notices though) and then trying to grab data from the built object. If we succeed,
 439                  * we're definitely dealing with revision data and we may proceed, if not, we'll leave it
 440                  * to extensions to subscribe to the hook to parse the row.
 441                  */
 442                 Wikimedia\suppressWarnings();
 443                 try {
 444                         $rev = new Revision( $row );
 445                         $validRevision = (bool)$rev->getId();
 446                 } catch ( Exception $e ) {
 447                         $validRevision = false;
 448                 }
 449                 Wikimedia\restoreWarnings();
 450                 return $validRevision ? $rev : null;
 451         }
 452
 453         /**
 454          * Generates each row in the contributions list.
 455          *
 456          * Contributions which are marked "top" are currently on top of the history.
 457          * For these contributions, a [rollback] link is shown for users with roll-
 458          * back privileges. The rollback link restores the most recent version that
 459          * was not written by the target user.
 460          *
 461          * @todo This would probably look a lot nicer in a table.
 462          * @param object $row
 463          * @return string
 464          */
 465         function formatRow( $row ) {
 466                 $ret = '';
 467                 $classes = [];
 468                 $attribs = [];
 469
 470                 $linkRenderer = MediaWikiServices::getInstance()->getLinkRenderer();
 471
 472                 $rev = $this->tryToCreateValidRevision( $row );
 473                 if ( $rev ) {
 474                         $attribs['data-mw-revid'] = $rev->getId();
 475
 476                         $page = Title::newFromRow( $row );
 477                         $link = $linkRenderer->makeLink(
 478                                 $page,
 479                                 $page->getPrefixedText(),
 480                                 [ 'class' => 'mw-contributions-title' ],
 481                                 $page->isRedirect() ? [ 'redirect' => 'no' ] : []
 482                         );
 483                         # Mark current revisions
 484                         $topmarktext = '';
 485                         $user = $this->getUser();
 486
 487                         if ( $row->rev_id === $row->page_latest ) {
 488                                 $topmarktext .= '<span class="mw-uctop">' . $this->messages['uctop'] . '</span>';
 489                                 $classes[] = 'mw-contributions-current';
 490                                 # Add rollback link
 491                                 if ( !$row->page_is_new && $page->quickUserCan( 'rollback', $user )
 492                                         && $page->quickUserCan( 'edit', $user )
 493                                 ) {
 494                                         $this->preventClickjacking();
 495                                         $topmarktext .= ' ' . Linker::generateRollback( $rev, $this->getContext() );
 496                                 }
 497                         }
 498                         # Is there a visible previous revision?
 499                         if ( $rev->userCan( Revision::DELETED_TEXT, $user ) && $rev->getParentId() !== 0 ) {
 500                                 $difftext = $linkRenderer->makeKnownLink(
 501                                         $page,
 502                                         new HtmlArmor( $this->messages['diff'] ),
 503                                         [ 'class' => 'mw-changeslist-diff' ],
 504                                         [
 505                                                 'diff' => 'prev',
 506                                                 'oldid' => $row->rev_id
 507                                         ]
 508                                 );
 509                         } else {
 510                                 $difftext = $this->messages['diff'];
 511                         }
 512                         $histlink = $linkRenderer->makeKnownLink(
 513                                 $page,
 514                                 new HtmlArmor( $this->messages['hist'] ),
 515                                 [ 'class' => 'mw-changeslist-history' ],
 516                                 [ 'action' => 'history' ]
 517                         );
 518
 519                         if ( $row->rev_parent_id === null ) {
 520                                 // For some reason rev_parent_id isn't populated for this row.
 521                                 // Its rumoured this is true on wikipedia for some revisions (T36922).
 522                                 // Next best thing is to have the total number of bytes.
 523                                 $chardiff = ' <span class="mw-changeslist-separator"></span> ';
 524                                 $chardiff .= Linker::formatRevisionSize( $row->rev_len );
 525                                 $chardiff .= ' <span class="mw-changeslist-separator"></span> ';
 526                         } else {
 527                                 $parentLen = 0;
 528                                 if ( isset( $this->mParentLens[$row->rev_parent_id] ) ) {
 529                                         $parentLen = $this->mParentLens[$row->rev_parent_id];
 530                                 }
 531
 532                                 $chardiff = ' <span class="mw-changeslist-separator"></span> ';
 533                                 $chardiff .= ChangesList::showCharacterDifference(
 534                                         $parentLen,
 535                                         $row->rev_len,
 536                                         $this->getContext()
 537                                 );
 538                                 $chardiff .= ' <span class="mw-changeslist-separator"></span> ';
 539                         }
 540
 541                         $lang = $this->getLanguage();
 542                         $comment = $lang->getDirMark() . Linker::revComment( $rev, false, true );
 543                         $date = $lang->userTimeAndDate( $row->rev_timestamp, $user );
 544                         if ( $rev->userCan( Revision::DELETED_TEXT, $user ) ) {
 545                                 $d = $linkRenderer->makeKnownLink(
 546                                         $page,
 547                                         $date,
 548                                         [ 'class' => 'mw-changeslist-date' ],
 549                                         [ 'oldid' => intval( $row->rev_id ) ]
 550                                 );
 551                         } else {
 552                                 $d = htmlspecialchars( $date );
 553                         }
 554                         if ( $rev->isDeleted( Revision::DELETED_TEXT ) ) {
 555                                 $d = '<span class="history-deleted">' . $d . '</span>';
 556                         }
 557
 558                         # Show user names for /newbies as there may be different users.
 559                         # Note that only unprivileged users have rows with hidden user names excluded.
 560                         # When querying for an IP range, we want to always show user and user talk links.
 561                         $userlink = '';
 562                         if ( ( $this->contribs == 'newbie' && !$rev->isDeleted( Revision::DELETED_USER ) )
 563                                 || $this->isQueryableRange( $this->target ) ) {
 564                                 $userlink = ' <span class="mw-changeslist-separator"></span> '
 565                                         . $lang->getDirMark()
 566                                         . Linker::userLink( $rev->getUser(), $rev->getUserText() );
 567                                 $userlink .= ' ' . $this->msg( 'parentheses' )->rawParams(
 568                                         Linker::userTalkLink( $rev->getUser(), $rev->getUserText() ) )->escaped() . ' ';
 569                         }
 570
 571                         $flags = [];
 572                         if ( $rev->getParentId() === 0 ) {
 573                                 $flags[] = ChangesList::flag( 'newpage' );
 574                         }
 575
 576                         if ( $rev->isMinor() ) {
 577                                 $flags[] = ChangesList::flag( 'minor' );
 578                         }
 579
 580                         $del = Linker::getRevDeleteLink( $user, $rev, $page );
 581                         if ( $del !== '' ) {
 582                                 $del .= ' ';
 583                         }
 584
 585                         $diffHistLinks = Html::rawElement( 'ul',
 586                                 [ 'class' => 'mw-changeslist-link-list' ],
 587                                 Html::rawElement( 'li', [], $difftext ) .
 588                                 Html::rawElement( 'li', [], $histlink )
 589                         );
 590
 591                         # Tags, if any.
 592                         list( $tagSummary, $newClasses ) = ChangeTags::formatSummaryRow(
 593                                 $row->ts_tags,
 594                                 'contributions',
 595                                 $this->getContext()
 596                         );
 597                         $classes = array_merge( $classes, $newClasses );
 598
 599                         Hooks::run( 'SpecialContributions::formatRow::flags', [ $this->getContext(), $row, &$flags ] );
 600
 601                         $templateParams = [
 602                                 'del' => $del,
 603                                 'timestamp' => $d,
 604                                 'diffHistLinks' => $diffHistLinks,
 605                                 'charDifference' => $chardiff,
 606                                 'flags' => $flags,
 607                                 'articleLink' => $link,
 608                                 'userlink' => $userlink,
 609                                 'logText' => $comment,
 610                                 'topmarktext' => $topmarktext,
 611                                 'tagSummary' => $tagSummary,
 612                         ];
 613
 614                         # Denote if username is redacted for this edit
 615                         if ( $rev->isDeleted( Revision::DELETED_USER ) ) {
 616                                 $templateParams['rev-deleted-user-contribs'] =
 617                                         $this->msg( 'rev-deleted-user-contribs' )->escaped();
 618                         }
 619
 620                         $ret = $this->templateParser->processTemplate(
 621                                 'SpecialContributionsLine',
 622                                 $templateParams
 623                         );
 624                 }
 625
 626                 // Let extensions add data
 627                 Hooks::run( 'ContributionsLineEnding', [ $this, &$ret, $row, &$classes, &$attribs ] );
 628                 $attribs = array_filter( $attribs,
 629                         [ Sanitizer::class, 'isReservedDataAttribute' ],
 630                         ARRAY_FILTER_USE_KEY
 631                 );
 632
 633                 // TODO: Handle exceptions in the catch block above.  Do any extensions rely on
 634                 // receiving empty rows?
 635
 636                 if ( $classes === [] && $attribs === [] && $ret === '' ) {
 637                         wfDebug( "Dropping Special:Contribution row that could not be formatted\n" );
 638                         return "<!-- Could not format Special:Contribution row. -->\n";
 639                 }
 640                 $attribs['class'] = $classes;
 641
 642                 // FIXME: The signature of the ContributionsLineEnding hook makes it
 643                 // very awkward to move this LI wrapper into the template.
 644                 return Html::rawElement( 'li', $attribs, $ret ) . "\n";
 645         }
 646
 647         /**
 648          * Overwrite Pager function and return a helpful comment
 649          * @return string
 650          */
 651         function getSqlComment() {
 652                 if ( $this->namespace || $this->deletedOnly ) {
 653                         // potentially slow, see CR r58153
 654                         return 'contributions page filtered for namespace or RevisionDeleted edits';
 655                 } else {
 656                         return 'contributions page unfiltered';
 657                 }
 658         }
 659
 660         protected function preventClickjacking() {
 661                 $this->preventClickjacking = true;
 662         }
 663
 664         /**
 665          * @return bool
 666          */
 667         public function getPreventClickjacking() {
 668                 return $this->preventClickjacking;
 669         }
 670
 671         /**
 672          * Set up date filter options, given request data.
 673          *
 674          * @param array $opts Options array
 675          * @return array Options array with processed start and end date filter options
 676          */
 677         public static function processDateFilter( array $opts ) {
 678                 $start = $opts['start'] ?? '';
 679                 $end = $opts['end'] ?? '';
 680                 $year = $opts['year'] ?? '';
 681                 $month = $opts['month'] ?? '';
 682
 683                 if ( $start !== '' && $end !== '' && $start > $end ) {
 684                         $temp = $start;
 685                         $start = $end;
 686                         $end = $temp;
 687                 }
 688
 689                 // If year/month legacy filtering options are set, convert them to display the new stamp
 690                 if ( $year !== '' || $month !== '' ) {
 691                         // Reuse getDateCond logic, but subtract a day because
 692                         // the endpoints of our date range appear inclusive
 693                         // but the internal end offsets are always exclusive
 694                         $legacyTimestamp = ReverseChronologicalPager::getOffsetDate( $year, $month );
 695                         $legacyDateTime = new DateTime( $legacyTimestamp->getTimestamp( TS_ISO_8601 ) );
 696                         $legacyDateTime = $legacyDateTime->modify( '-1 day' );
 697
 698                         // Clear the new timestamp range options if used and
 699                         // replace with the converted legacy timestamp
 700                         $start = '';
 701                         $end = $legacyDateTime->format( 'Y-m-d' );
 702                 }
 703
 704                 $opts['start'] = $start;
 705                 $opts['end'] = $end;
 706
 707                 return $opts;
 708         }
 709 }