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         /**
  34          * @var string[] Local cache for escaped messages
  35          */
  36         private $messages;
  37
  38         /**
  39          * @var string User name, or a string describing an IP address range
  40          */
  41         private $target;
  42
  43         /**
  44          * @var string Set to "newbie" to list contributions from the most recent 1% registered users.
  45          *  $this->target is ignored then. Defaults to "users".
  46          */
  47         private $contribs;
  48
  49         /**
  50          * @var string|int A single namespace number, or an empty string for all namespaces
  51          */
  52         private $namespace = '';
  53
  54         /**
  55          * @var string|false Name of tag to filter, or false to ignore tags
  56          */
  57         private $tagFilter;
  58
  59         /**
  60          * @var bool Set to true to invert the namespace selection
  61          */
  62         private $nsInvert;
  63
  64         /**
  65          * @var bool Set to true to show both the subject and talk namespace, no matter which got
  66          *  selected
  67          */
  68         private $associated;
  69
  70         /**
  71          * @var bool Set to true to show only deleted revisions
  72          */
  73         private $deletedOnly;
  74
  75         /**
  76          * @var bool Set to true to show only latest (a.k.a. current) revisions
  77          */
  78         private $topOnly;
  79
  80         /**
  81          * @var bool Set to true to show only new pages
  82          */
  83         private $newOnly;
  84
  85         /**
  86          * @var bool Set to true to hide edits marked as minor by the user
  87          */
  88         private $hideMinor;
  89
  90         private $preventClickjacking = false;
  91
  92         /** @var IDatabase */
  93         private $mDbSecondary;
  94
  95         /**
  96          * @var array
  97          */
  98         private $mParentLens;
  99
 100         /**
 101          * @var TemplateParser
 102          */
 103         private $templateParser;
 104
 105         public function __construct( IContextSource $context, array $options ) {
 106                 parent::__construct( $context );
 107
 108                 $msgs = [
 109                         'diff',
 110                         'hist',
 111                         'pipe-separator',
 112                         'uctop'
 113                 ];
 114
 115                 foreach ( $msgs as $msg ) {
 116                         $this->messages[$msg] = $this->msg( $msg )->escaped();
 117                 }
 118
 119                 $this->target = $options['target'] ?? '';
 120                 $this->contribs = $options['contribs'] ?? 'users';
 121                 $this->namespace = $options['namespace'] ?? '';
 122                 $this->tagFilter = $options['tagfilter'] ?? false;
 123                 $this->nsInvert = $options['nsInvert'] ?? false;
 124                 $this->associated = $options['associated'] ?? false;
 125
 126                 $this->deletedOnly = !empty( $options['deletedOnly'] );
 127                 $this->topOnly = !empty( $options['topOnly'] );
 128                 $this->newOnly = !empty( $options['newOnly'] );
 129                 $this->hideMinor = !empty( $options['hideMinor'] );
 130
 131                 // Date filtering: use timestamp if available
 132                 $startTimestamp = '';
 133                 $endTimestamp = '';
 134                 if ( $options['start'] ) {
 135                         $startTimestamp = $options['start'] . ' 00:00:00';
 136                 }
 137                 if ( $options['end'] ) {
 138                         $endTimestamp = $options['end'] . ' 23:59:59';
 139                 }
 140                 $this->getDateRangeCond( $startTimestamp, $endTimestamp );
 141
 142                 // Most of this code will use the 'contributions' group DB, which can map to replica DBs
 143                 // with extra user based indexes or partioning by user. The additional metadata
 144                 // queries should use a regular replica DB since the lookup pattern is not all by user.
 145                 $this->mDbSecondary = wfGetDB( DB_REPLICA ); // any random replica DB
 146                 $this->mDb = wfGetDB( DB_REPLICA, 'contributions' );
 147                 $this->templateParser = new TemplateParser();
 148         }
 149
 150         function getDefaultQuery() {
 151                 $query = parent::getDefaultQuery();
 152                 $query['target'] = $this->target;
 153
 154                 return $query;
 155         }
 156
 157         /**
 158          * This method basically executes the exact same code as the parent class, though with
 159          * a hook added, to allow extensions to add additional queries.
 160          *
 161          * @param string $offset Index offset, inclusive
 162          * @param int $limit Exact query limit
 163          * @param bool $descending Query direction, false for ascending, true for descending
 164          * @return IResultWrapper
 165          */
 166         function reallyDoQuery( $offset, $limit, $descending ) {
 167                 list( $tables, $fields, $conds, $fname, $options, $join_conds ) = $this->buildQueryInfo(
 168                         $offset,
 169                         $limit,
 170                         $descending
 171                 );
 172
 173                 /*
 174                  * This hook will allow extensions to add in additional queries, so they can get their data
 175                  * in My Contributions as well. Extensions should append their results to the $data array.
 176                  *
 177                  * Extension queries have to implement the navbar requirement as well. They should
 178                  * - have a column aliased as $pager->getIndexField()
 179                  * - have LIMIT set
 180                  * - have a WHERE-clause that compares the $pager->getIndexField()-equivalent column to the offset
 181                  * - have the ORDER BY specified based upon the details provided by the navbar
 182                  *
 183                  * See includes/Pager.php buildQueryInfo() method on how to build LIMIT, WHERE & ORDER BY
 184                  *
 185                  * &$data: an array of results of all contribs queries
 186                  * $pager: the ContribsPager object hooked into
 187                  * $offset: see phpdoc above
 188                  * $limit: see phpdoc above
 189                  * $descending: see phpdoc above
 190                  */
 191                 $data = [ $this->mDb->select(
 192                         $tables, $fields, $conds, $fname, $options, $join_conds
 193                 ) ];
 194                 Hooks::run(
 195                         'ContribsPager::reallyDoQuery',
 196                         [ &$data, $this, $offset, $limit, $descending ]
 197                 );
 198
 199                 $result = [];
 200
 201                 // loop all results and collect them in an array
 202                 foreach ( $data as $query ) {
 203                         foreach ( $query as $i => $row ) {
 204                                 // use index column as key, allowing us to easily sort in PHP
 205                                 $result[$row->{$this->getIndexField()} . "-$i"] = $row;
 206                         }
 207                 }
 208
 209                 // sort results
 210                 if ( $descending ) {
 211                         ksort( $result );
 212                 } else {
 213                         krsort( $result );
 214                 }
 215
 216                 // enforce limit
 217                 $result = array_slice( $result, 0, $limit );
 218
 219                 // get rid of array keys
 220                 $result = array_values( $result );
 221
 222                 return new FakeResultWrapper( $result );
 223         }
 224
 225         function getQueryInfo() {
 226                 $revQuery = Revision::getQueryInfo( [ 'page', 'user' ] );
 227                 $queryInfo = [
 228                         'tables' => $revQuery['tables'],
 229                         'fields' => array_merge( $revQuery['fields'], [ 'page_is_new' ] ),
 230                         'conds' => [],
 231                         'options' => [],
 232                         'join_conds' => $revQuery['joins'],
 233                 ];
 234
 235                 if ( $this->contribs == 'newbie' ) {
 236                         $max = $this->mDb->selectField( 'user', 'max(user_id)', '', __METHOD__ );
 237                         $queryInfo['conds'][] = $revQuery['fields']['rev_user'] . ' >' . (int)( $max - $max / 100 );
 238                         # ignore local groups with the bot right
 239                         # @todo FIXME: Global groups may have 'bot' rights
 240                         $groupsWithBotPermission = User::getGroupsWithPermission( 'bot' );
 241                         if ( count( $groupsWithBotPermission ) ) {
 242                                 $queryInfo['tables'][] = 'user_groups';
 243                                 $queryInfo['conds'][] = 'ug_group IS NULL';
 244                                 $queryInfo['join_conds']['user_groups'] = [
 245                                         'LEFT JOIN', [
 246                                                 'ug_user = ' . $revQuery['fields']['rev_user'],
 247                                                 'ug_group' => $groupsWithBotPermission,
 248                                                 'ug_expiry IS NULL OR ug_expiry >= ' .
 249                                                         $this->mDb->addQuotes( $this->mDb->timestamp() )
 250                                         ]
 251                                 ];
 252                         }
 253                         // (T140537) Disallow looking too far in the past for 'newbies' queries. If the user requested
 254                         // a timestamp offset far in the past such that there are no edits by users with user_ids in
 255                         // the range, we would end up scanning all revisions from that offset until start of time.
 256                         $queryInfo['conds'][] = 'rev_timestamp > ' .
 257                                 $this->mDb->addQuotes( $this->mDb->timestamp( wfTimestamp() - 30 * 24 * 60 * 60 ) );
 258                 } else {
 259                         $user = User::newFromName( $this->target, false );
 260                         $ipRangeConds = $user->isAnon() ? $this->getIpRangeConds( $this->mDb, $this->target ) : null;
 261                         if ( $ipRangeConds ) {
 262                                 $queryInfo['tables'][] = 'ip_changes';
 263                                 /**
 264                                  * These aliases make `ORDER BY rev_timestamp, rev_id` from {@see getIndexField} and
 265                                  * {@see getExtraSortFields} use the replicated `ipc_rev_timestamp` and `ipc_rev_id`
 266                                  * columns from the `ip_changes` table, for more efficient queries.
 267                                  * @see https://phabricator.wikimedia.org/T200259#4832318
 268                                  */
 269                                 $queryInfo['fields'] = array_merge(
 270                                         [
 271                                                 'rev_timestamp' => 'ipc_rev_timestamp',
 272                                                 'rev_id' => 'ipc_rev_id',
 273                                         ],
 274                                         array_diff( $queryInfo['fields'], [
 275                                                 'rev_timestamp',
 276                                                 'rev_id',
 277                                         ] )
 278                                 );
 279                                 $queryInfo['join_conds']['ip_changes'] = [
 280                                         'LEFT JOIN', [ 'ipc_rev_id = rev_id' ]
 281                                 ];
 282                                 $queryInfo['conds'][] = $ipRangeConds;
 283                         } else {
 284                                 // tables and joins are already handled by Revision::getQueryInfo()
 285                                 $conds = ActorMigration::newMigration()->getWhere( $this->mDb, 'rev_user', $user );
 286                                 $queryInfo['conds'][] = $conds['conds'];
 287                                 // Force the appropriate index to avoid bad query plans (T189026)
 288                                 if ( isset( $conds['orconds']['actor'] ) ) {
 289                                         // @todo: This will need changing when revision_comment_temp goes away
 290                                         $queryInfo['options']['USE INDEX']['temp_rev_user'] = 'actor_timestamp';
 291                                         // Alias 'rev_timestamp' => 'revactor_timestamp' so "ORDER BY rev_timestamp" is interpreted to
 292                                         // use revactor_timestamp instead.
 293                                         $queryInfo['fields'] = array_merge(
 294                                                 array_diff( $queryInfo['fields'], [ 'rev_timestamp' ] ),
 295                                                 [ 'rev_timestamp' => 'revactor_timestamp' ]
 296                                         );
 297                                 } else {
 298                                         $queryInfo['options']['USE INDEX']['revision'] =
 299                                                 isset( $conds['orconds']['userid'] ) ? 'user_timestamp' : 'usertext_timestamp';
 300                                 }
 301                         }
 302                 }
 303
 304                 if ( $this->deletedOnly ) {
 305                         $queryInfo['conds'][] = 'rev_deleted != 0';
 306                 }
 307
 308                 if ( $this->topOnly ) {
 309                         $queryInfo['conds'][] = 'rev_id = page_latest';
 310                 }
 311
 312                 if ( $this->newOnly ) {
 313                         $queryInfo['conds'][] = 'rev_parent_id = 0';
 314                 }
 315
 316                 if ( $this->hideMinor ) {
 317                         $queryInfo['conds'][] = 'rev_minor_edit = 0';
 318                 }
 319
 320                 $user = $this->getUser();
 321                 $queryInfo['conds'] = array_merge( $queryInfo['conds'], $this->getNamespaceCond() );
 322
 323                 // Paranoia: avoid brute force searches (T19342)
 324                 if ( !$user->isAllowed( 'deletedhistory' ) ) {
 325                         $queryInfo['conds'][] = $this->mDb->bitAnd( 'rev_deleted', Revision::DELETED_USER ) . ' = 0';
 326                 } elseif ( !$user->isAllowedAny( 'suppressrevision', 'viewsuppressed' ) ) {
 327                         $queryInfo['conds'][] = $this->mDb->bitAnd( 'rev_deleted', Revision::SUPPRESSED_USER ) .
 328                                 ' != ' . Revision::SUPPRESSED_USER;
 329                 }
 330
 331                 // For IPv6, we use ipc_rev_timestamp on ip_changes as the index field,
 332                 // which will be referenced when parsing the results of a query.
 333                 if ( self::isQueryableRange( $this->target ) ) {
 334                         $queryInfo['fields'][] = 'ipc_rev_timestamp';
 335                 }
 336
 337                 ChangeTags::modifyDisplayQuery(
 338                         $queryInfo['tables'],
 339                         $queryInfo['fields'],
 340                         $queryInfo['conds'],
 341                         $queryInfo['join_conds'],
 342                         $queryInfo['options'],
 343                         $this->tagFilter
 344                 );
 345
 346                 // Avoid PHP 7.1 warning from passing $this by reference
 347                 $pager = $this;
 348                 Hooks::run( 'ContribsPager::getQueryInfo', [ &$pager, &$queryInfo ] );
 349
 350                 return $queryInfo;
 351         }
 352
 353         function getNamespaceCond() {
 354                 if ( $this->namespace !== '' ) {
 355                         $selectedNS = $this->mDb->addQuotes( $this->namespace );
 356                         $eq_op = $this->nsInvert ? '!=' : '=';
 357                         $bool_op = $this->nsInvert ? 'AND' : 'OR';
 358
 359                         if ( !$this->associated ) {
 360                                 return [ "page_namespace $eq_op $selectedNS" ];
 361                         }
 362
 363                         $associatedNS = $this->mDb->addQuotes(
 364                                 MWNamespace::getAssociated( $this->namespace )
 365                         );
 366
 367                         return [
 368                                 "page_namespace $eq_op $selectedNS " .
 369                                 $bool_op .
 370                                 " page_namespace $eq_op $associatedNS"
 371                         ];
 372                 }
 373
 374                 return [];
 375         }
 376
 377         /**
 378          * Get SQL conditions for an IP range, if applicable
 379          * @param IDatabase      $db
 380          * @param string         $ip The IP address or CIDR
 381          * @return string|false  SQL for valid IP ranges, false if invalid
 382          */
 383         private function getIpRangeConds( $db, $ip ) {
 384                 // First make sure it is a valid range and they are not outside the CIDR limit
 385                 if ( !$this->isQueryableRange( $ip ) ) {
 386                         return false;
 387                 }
 388
 389                 list( $start, $end ) = IP::parseRange( $ip );
 390
 391                 return 'ipc_hex BETWEEN ' . $db->addQuotes( $start ) . ' AND ' . $db->addQuotes( $end );
 392         }
 393
 394         /**
 395          * Is the given IP a range and within the CIDR limit?
 396          *
 397          * @param string $ipRange
 398          * @return bool True if it is valid
 399          * @since 1.30
 400          */
 401         public function isQueryableRange( $ipRange ) {
 402                 $limits = $this->getConfig()->get( 'RangeContributionsCIDRLimit' );
 403
 404                 $bits = IP::parseCIDR( $ipRange )[1];
 405                 if (
 406                         ( $bits === false ) ||
 407                         ( IP::isIPv4( $ipRange ) && $bits < $limits['IPv4'] ) ||
 408                         ( IP::isIPv6( $ipRange ) && $bits < $limits['IPv6'] )
 409                 ) {
 410                         return false;
 411                 }
 412
 413                 return true;
 414         }
 415
 416         /**
 417          * @return string
 418          */
 419         public function getIndexField() {
 420                 // Note this is run via parent::__construct() *before* $this->target is set!
 421                 return 'rev_timestamp';
 422         }
 423
 424         /**
 425          * @return string[]
 426          */
 427         protected function getExtraSortFields() {
 428                 // Note this is run via parent::__construct() *before* $this->target is set!
 429                 return [ 'rev_id' ];
 430         }
 431
 432         function doBatchLookups() {
 433                 # Do a link batch query
 434                 $this->mResult->seek( 0 );
 435                 $parentRevIds = [];
 436                 $this->mParentLens = [];
 437                 $batch = new LinkBatch();
 438                 $isIpRange = $this->isQueryableRange( $this->target );
 439                 # Give some pointers to make (last) links
 440                 foreach ( $this->mResult as $row ) {
 441                         if ( isset( $row->rev_parent_id ) && $row->rev_parent_id ) {
 442                                 $parentRevIds[] = $row->rev_parent_id;
 443                         }
 444                         if ( isset( $row->rev_id ) ) {
 445                                 $this->mParentLens[$row->rev_id] = $row->rev_len;
 446                                 if ( $this->contribs === 'newbie' ) { // multiple users
 447                                         $batch->add( NS_USER, $row->user_name );
 448                                         $batch->add( NS_USER_TALK, $row->user_name );
 449                                 } elseif ( $isIpRange ) {
 450                                         // If this is an IP range, batch the IP's talk page
 451                                         $batch->add( NS_USER_TALK, $row->rev_user_text );
 452                                 }
 453                                 $batch->add( $row->page_namespace, $row->page_title );
 454                         }
 455                 }
 456                 # Fetch rev_len for revisions not already scanned above
 457                 $this->mParentLens += Revision::getParentLengths(
 458                         $this->mDbSecondary,
 459                         array_diff( $parentRevIds, array_keys( $this->mParentLens ) )
 460                 );
 461                 $batch->execute();
 462                 $this->mResult->seek( 0 );
 463         }
 464
 465         /**
 466          * @return string
 467          */
 468         function getStartBody() {
 469                 return "<ul class=\"mw-contributions-list\">\n";
 470         }
 471
 472         /**
 473          * @return string
 474          */
 475         function getEndBody() {
 476                 return "</ul>\n";
 477         }
 478
 479         /**
 480          * Check whether the revision associated is valid for formatting. If has no associated revision
 481          * id then null is returned.
 482          *
 483          * @param object $row
 484          * @param Title|null $title
 485          * @return Revision|null
 486          */
 487         public function tryToCreateValidRevision( $row, $title = null ) {
 488                 /*
 489                  * There may be more than just revision rows. To make sure that we'll only be processing
 490                  * revisions here, let's _try_ to build a revision out of our row (without displaying
 491                  * notices though) and then trying to grab data from the built object. If we succeed,
 492                  * we're definitely dealing with revision data and we may proceed, if not, we'll leave it
 493                  * to extensions to subscribe to the hook to parse the row.
 494                  */
 495                 Wikimedia\suppressWarnings();
 496                 try {
 497                         $rev = new Revision( $row, 0, $title );
 498                         $validRevision = (bool)$rev->getId();
 499                 } catch ( Exception $e ) {
 500                         $validRevision = false;
 501                 }
 502                 Wikimedia\restoreWarnings();
 503                 return $validRevision ? $rev : null;
 504         }
 505
 506         /**
 507          * Generates each row in the contributions list.
 508          *
 509          * Contributions which are marked "top" are currently on top of the history.
 510          * For these contributions, a [rollback] link is shown for users with roll-
 511          * back privileges. The rollback link restores the most recent version that
 512          * was not written by the target user.
 513          *
 514          * @todo This would probably look a lot nicer in a table.
 515          * @param object $row
 516          * @return string
 517          */
 518         function formatRow( $row ) {
 519                 $ret = '';
 520                 $classes = [];
 521                 $attribs = [];
 522
 523                 $linkRenderer = MediaWikiServices::getInstance()->getLinkRenderer();
 524
 525                 $page = null;
 526                 // Create a title for the revision if possible
 527                 // Rows from the hook may not include title information
 528                 if ( isset( $row->page_namespace ) && isset( $row->page_title ) ) {
 529                         $page = Title::newFromRow( $row );
 530                 }
 531                 $rev = $this->tryToCreateValidRevision( $row, $page );
 532                 if ( $rev ) {
 533                         $attribs['data-mw-revid'] = $rev->getId();
 534
 535                         $link = $linkRenderer->makeLink(
 536                                 $page,
 537                                 $page->getPrefixedText(),
 538                                 [ 'class' => 'mw-contributions-title' ],
 539                                 $page->isRedirect() ? [ 'redirect' => 'no' ] : []
 540                         );
 541                         # Mark current revisions
 542                         $topmarktext = '';
 543                         $user = $this->getUser();
 544
 545                         if ( $row->rev_id === $row->page_latest ) {
 546                                 $topmarktext .= '<span class="mw-uctop">' . $this->messages['uctop'] . '</span>';
 547                                 $classes[] = 'mw-contributions-current';
 548                                 # Add rollback link
 549                                 if ( !$row->page_is_new && $page->quickUserCan( 'rollback', $user )
 550                                         && $page->quickUserCan( 'edit', $user )
 551                                 ) {
 552                                         $this->preventClickjacking();
 553                                         $topmarktext .= ' ' . Linker::generateRollback( $rev, $this->getContext() );
 554                                 }
 555                         }
 556                         # Is there a visible previous revision?
 557                         if ( $rev->userCan( Revision::DELETED_TEXT, $user ) && $rev->getParentId() !== 0 ) {
 558                                 $difftext = $linkRenderer->makeKnownLink(
 559                                         $page,
 560                                         new HtmlArmor( $this->messages['diff'] ),
 561                                         [ 'class' => 'mw-changeslist-diff' ],
 562                                         [
 563                                                 'diff' => 'prev',
 564                                                 'oldid' => $row->rev_id
 565                                         ]
 566                                 );
 567                         } else {
 568                                 $difftext = $this->messages['diff'];
 569                         }
 570                         $histlink = $linkRenderer->makeKnownLink(
 571                                 $page,
 572                                 new HtmlArmor( $this->messages['hist'] ),
 573                                 [ 'class' => 'mw-changeslist-history' ],
 574                                 [ 'action' => 'history' ]
 575                         );
 576
 577                         if ( $row->rev_parent_id === null ) {
 578                                 // For some reason rev_parent_id isn't populated for this row.
 579                                 // Its rumoured this is true on wikipedia for some revisions (T36922).
 580                                 // Next best thing is to have the total number of bytes.
 581                                 $chardiff = ' <span class="mw-changeslist-separator"></span> ';
 582                                 $chardiff .= Linker::formatRevisionSize( $row->rev_len );
 583                                 $chardiff .= ' <span class="mw-changeslist-separator"></span> ';
 584                         } else {
 585                                 $parentLen = 0;
 586                                 if ( isset( $this->mParentLens[$row->rev_parent_id] ) ) {
 587                                         $parentLen = $this->mParentLens[$row->rev_parent_id];
 588                                 }
 589
 590                                 $chardiff = ' <span class="mw-changeslist-separator"></span> ';
 591                                 $chardiff .= ChangesList::showCharacterDifference(
 592                                         $parentLen,
 593                                         $row->rev_len,
 594                                         $this->getContext()
 595                                 );
 596                                 $chardiff .= ' <span class="mw-changeslist-separator"></span> ';
 597                         }
 598
 599                         $lang = $this->getLanguage();
 600                         $comment = $lang->getDirMark() . Linker::revComment( $rev, false, true, false );
 601                         $date = $lang->userTimeAndDate( $row->rev_timestamp, $user );
 602                         if ( $rev->userCan( Revision::DELETED_TEXT, $user ) ) {
 603                                 $d = $linkRenderer->makeKnownLink(
 604                                         $page,
 605                                         $date,
 606                                         [ 'class' => 'mw-changeslist-date' ],
 607                                         [ 'oldid' => intval( $row->rev_id ) ]
 608                                 );
 609                         } else {
 610                                 $d = htmlspecialchars( $date );
 611                         }
 612                         if ( $rev->isDeleted( Revision::DELETED_TEXT ) ) {
 613                                 $d = '<span class="history-deleted">' . $d . '</span>';
 614                         }
 615
 616                         # Show user names for /newbies as there may be different users.
 617                         # Note that only unprivileged users have rows with hidden user names excluded.
 618                         # When querying for an IP range, we want to always show user and user talk links.
 619                         $userlink = '';
 620                         if ( ( $this->contribs == 'newbie' && !$rev->isDeleted( Revision::DELETED_USER ) )
 621                                 || $this->isQueryableRange( $this->target ) ) {
 622                                 $userlink = ' <span class="mw-changeslist-separator"></span> '
 623                                         . $lang->getDirMark()
 624                                         . Linker::userLink( $rev->getUser(), $rev->getUserText() );
 625                                 $userlink .= ' ' . $this->msg( 'parentheses' )->rawParams(
 626                                         Linker::userTalkLink( $rev->getUser(), $rev->getUserText() ) )->escaped() . ' ';
 627                         }
 628
 629                         $flags = [];
 630                         if ( $rev->getParentId() === 0 ) {
 631                                 $flags[] = ChangesList::flag( 'newpage' );
 632                         }
 633
 634                         if ( $rev->isMinor() ) {
 635                                 $flags[] = ChangesList::flag( 'minor' );
 636                         }
 637
 638                         $del = Linker::getRevDeleteLink( $user, $rev, $page );
 639                         if ( $del !== '' ) {
 640                                 $del .= ' ';
 641                         }
 642
 643                         // While it might be tempting to use a list here
 644                         // this would result in clutter and slows down navigating the content
 645                         // in assistive technology.
 646                         // See https://phabricator.wikimedia.org/T205581#4734812
 647                         $diffHistLinks = Html::rawElement( 'span',
 648                                 [ 'class' => 'mw-changeslist-links' ],
 649                                 // The spans are needed to ensure the dividing '|' elements are not
 650                                 // themselves styled as links.
 651                                 Html::rawElement( 'span', [], $difftext ) .
 652                                 ' ' . // Space needed for separating two words.
 653                                 Html::rawElement( 'span', [], $histlink )
 654                         );
 655
 656                         # Tags, if any.
 657                         list( $tagSummary, $newClasses ) = ChangeTags::formatSummaryRow(
 658                                 $row->ts_tags,
 659                                 'contributions',
 660                                 $this->getContext()
 661                         );
 662                         $classes = array_merge( $classes, $newClasses );
 663
 664                         Hooks::run( 'SpecialContributions::formatRow::flags', [ $this->getContext(), $row, &$flags ] );
 665
 666                         $templateParams = [
 667                                 'del' => $del,
 668                                 'timestamp' => $d,
 669                                 'diffHistLinks' => $diffHistLinks,
 670                                 'charDifference' => $chardiff,
 671                                 'flags' => $flags,
 672                                 'articleLink' => $link,
 673                                 'userlink' => $userlink,
 674                                 'logText' => $comment,
 675                                 'topmarktext' => $topmarktext,
 676                                 'tagSummary' => $tagSummary,
 677                         ];
 678
 679                         # Denote if username is redacted for this edit
 680                         if ( $rev->isDeleted( Revision::DELETED_USER ) ) {
 681                                 $templateParams['rev-deleted-user-contribs'] =
 682                                         $this->msg( 'rev-deleted-user-contribs' )->escaped();
 683                         }
 684
 685                         $ret = $this->templateParser->processTemplate(
 686                                 'SpecialContributionsLine',
 687                                 $templateParams
 688                         );
 689                 }
 690
 691                 // Let extensions add data
 692                 Hooks::run( 'ContributionsLineEnding', [ $this, &$ret, $row, &$classes, &$attribs ] );
 693                 $attribs = array_filter( $attribs,
 694                         [ Sanitizer::class, 'isReservedDataAttribute' ],
 695                         ARRAY_FILTER_USE_KEY
 696                 );
 697
 698                 // TODO: Handle exceptions in the catch block above.  Do any extensions rely on
 699                 // receiving empty rows?
 700
 701                 if ( $classes === [] && $attribs === [] && $ret === '' ) {
 702                         wfDebug( "Dropping Special:Contribution row that could not be formatted\n" );
 703                         return "<!-- Could not format Special:Contribution row. -->\n";
 704                 }
 705                 $attribs['class'] = $classes;
 706
 707                 // FIXME: The signature of the ContributionsLineEnding hook makes it
 708                 // very awkward to move this LI wrapper into the template.
 709                 return Html::rawElement( 'li', $attribs, $ret ) . "\n";
 710         }
 711
 712         /**
 713          * Overwrite Pager function and return a helpful comment
 714          * @return string
 715          */
 716         function getSqlComment() {
 717                 if ( $this->namespace || $this->deletedOnly ) {
 718                         // potentially slow, see CR r58153
 719                         return 'contributions page filtered for namespace or RevisionDeleted edits';
 720                 } else {
 721                         return 'contributions page unfiltered';
 722                 }
 723         }
 724
 725         protected function preventClickjacking() {
 726                 $this->preventClickjacking = true;
 727         }
 728
 729         /**
 730          * @return bool
 731          */
 732         public function getPreventClickjacking() {
 733                 return $this->preventClickjacking;
 734         }
 735
 736         /**
 737          * Set up date filter options, given request data.
 738          *
 739          * @param array $opts Options array
 740          * @return array Options array with processed start and end date filter options
 741          */
 742         public static function processDateFilter( array $opts ) {
 743                 $start = $opts['start'] ?? '';
 744                 $end = $opts['end'] ?? '';
 745                 $year = $opts['year'] ?? '';
 746                 $month = $opts['month'] ?? '';
 747
 748                 if ( $start !== '' && $end !== '' && $start > $end ) {
 749                         $temp = $start;
 750                         $start = $end;
 751                         $end = $temp;
 752                 }
 753
 754                 // If year/month legacy filtering options are set, convert them to display the new stamp
 755                 if ( $year !== '' || $month !== '' ) {
 756                         // Reuse getDateCond logic, but subtract a day because
 757                         // the endpoints of our date range appear inclusive
 758                         // but the internal end offsets are always exclusive
 759                         $legacyTimestamp = ReverseChronologicalPager::getOffsetDate( $year, $month );
 760                         $legacyDateTime = new DateTime( $legacyTimestamp->getTimestamp( TS_ISO_8601 ) );
 761                         $legacyDateTime = $legacyDateTime->modify( '-1 day' );
 762
 763                         // Clear the new timestamp range options if used and
 764                         // replace with the converted legacy timestamp
 765                         $start = '';
 766                         $end = $legacyDateTime->format( 'Y-m-d' );
 767                 }
 768
 769                 $opts['start'] = $start;
 770                 $opts['end'] = $end;
 771
 772                 return $opts;
 773         }
 774 }