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          * @private
  41          * @fixme Make private again after Flow got fixed.
  42          */
  43         public $target;
  44
  45         /**
  46          * @var string Set to "newbie" to list contributions from the most recent 1% registered users.
  47          *  $this->target is ignored then. Defaults to "users".
  48          * @private
  49          * @fixme Make private again after Flow got fixed.
  50          */
  51         public $contribs;
  52
  53         /**
  54          * @var string|int A single namespace number, or an empty string for all namespaces
  55          * @private
  56          * @fixme Make private again after Flow got fixed.
  57          */
  58         public $namespace = '';
  59
  60         /**
  61          * @var string|false Name of tag to filter, or false to ignore tags
  62          * @private
  63          * @fixme Make private again after Flow got fixed.
  64          */
  65         public $tagFilter;
  66
  67         /**
  68          * @var bool Set to true to invert the namespace selection
  69          */
  70         private $nsInvert;
  71
  72         /**
  73          * @var bool Set to true to show both the subject and talk namespace, no matter which got
  74          *  selected
  75          */
  76         private $associated;
  77
  78         /**
  79          * @var bool Set to true to show only deleted revisions
  80          */
  81         private $deletedOnly;
  82
  83         /**
  84          * @var bool Set to true to show only latest (a.k.a. current) revisions
  85          */
  86         private $topOnly;
  87
  88         /**
  89          * @var bool Set to true to show only new pages
  90          * @private
  91          * @fixme Make private again after Flow got fixed.
  92          */
  93         public $newOnly;
  94
  95         /**
  96          * @var bool Set to true to hide edits marked as minor by the user
  97          */
  98         private $hideMinor;
  99
 100         private $preventClickjacking = false;
 101
 102         /** @var IDatabase */
 103         private $mDbSecondary;
 104
 105         /**
 106          * @var array
 107          */
 108         private $mParentLens;
 109
 110         /**
 111          * @var TemplateParser
 112          */
 113         private $templateParser;
 114
 115         public function __construct( IContextSource $context, array $options ) {
 116                 parent::__construct( $context );
 117
 118                 $msgs = [
 119                         'diff',
 120                         'hist',
 121                         'pipe-separator',
 122                         'uctop'
 123                 ];
 124
 125                 foreach ( $msgs as $msg ) {
 126                         $this->messages[$msg] = $this->msg( $msg )->escaped();
 127                 }
 128
 129                 $this->target = $options['target'] ?? '';
 130                 $this->contribs = $options['contribs'] ?? 'users';
 131                 $this->namespace = $options['namespace'] ?? '';
 132                 $this->tagFilter = $options['tagfilter'] ?? false;
 133                 $this->nsInvert = $options['nsInvert'] ?? false;
 134                 $this->associated = $options['associated'] ?? false;
 135
 136                 $this->deletedOnly = !empty( $options['deletedOnly'] );
 137                 $this->topOnly = !empty( $options['topOnly'] );
 138                 $this->newOnly = !empty( $options['newOnly'] );
 139                 $this->hideMinor = !empty( $options['hideMinor'] );
 140
 141                 // Date filtering: use timestamp if available
 142                 $startTimestamp = '';
 143                 $endTimestamp = '';
 144                 if ( $options['start'] ) {
 145                         $startTimestamp = $options['start'] . ' 00:00:00';
 146                 }
 147                 if ( $options['end'] ) {
 148                         $endTimestamp = $options['end'] . ' 23:59:59';
 149                 }
 150                 $this->getDateRangeCond( $startTimestamp, $endTimestamp );
 151
 152                 // Most of this code will use the 'contributions' group DB, which can map to replica DBs
 153                 // with extra user based indexes or partioning by user. The additional metadata
 154                 // queries should use a regular replica DB since the lookup pattern is not all by user.
 155                 $this->mDbSecondary = wfGetDB( DB_REPLICA ); // any random replica DB
 156                 $this->mDb = wfGetDB( DB_REPLICA, 'contributions' );
 157                 $this->templateParser = new TemplateParser();
 158         }
 159
 160         function getDefaultQuery() {
 161                 $query = parent::getDefaultQuery();
 162                 $query['target'] = $this->target;
 163
 164                 return $query;
 165         }
 166
 167         /**
 168          * This method basically executes the exact same code as the parent class, though with
 169          * a hook added, to allow extensions to add additional queries.
 170          *
 171          * @param string $offset Index offset, inclusive
 172          * @param int $limit Exact query limit
 173          * @param bool $descending Query direction, false for ascending, true for descending
 174          * @return IResultWrapper
 175          */
 176         function reallyDoQuery( $offset, $limit, $descending ) {
 177                 list( $tables, $fields, $conds, $fname, $options, $join_conds ) = $this->buildQueryInfo(
 178                         $offset,
 179                         $limit,
 180                         $descending
 181                 );
 182
 183                 /*
 184                  * This hook will allow extensions to add in additional queries, so they can get their data
 185                  * in My Contributions as well. Extensions should append their results to the $data array.
 186                  *
 187                  * Extension queries have to implement the navbar requirement as well. They should
 188                  * - have a column aliased as $pager->getIndexField()
 189                  * - have LIMIT set
 190                  * - have a WHERE-clause that compares the $pager->getIndexField()-equivalent column to the offset
 191                  * - have the ORDER BY specified based upon the details provided by the navbar
 192                  *
 193                  * See includes/Pager.php buildQueryInfo() method on how to build LIMIT, WHERE & ORDER BY
 194                  *
 195                  * &$data: an array of results of all contribs queries
 196                  * $pager: the ContribsPager object hooked into
 197                  * $offset: see phpdoc above
 198                  * $limit: see phpdoc above
 199                  * $descending: see phpdoc above
 200                  */
 201                 $data = [ $this->mDb->select(
 202                         $tables, $fields, $conds, $fname, $options, $join_conds
 203                 ) ];
 204                 Hooks::run(
 205                         'ContribsPager::reallyDoQuery',
 206                         [ &$data, $this, $offset, $limit, $descending ]
 207                 );
 208
 209                 $result = [];
 210
 211                 // loop all results and collect them in an array
 212                 foreach ( $data as $query ) {
 213                         foreach ( $query as $i => $row ) {
 214                                 // use index column as key, allowing us to easily sort in PHP
 215                                 $result[$row->{$this->getIndexField()} . "-$i"] = $row;
 216                         }
 217                 }
 218
 219                 // sort results
 220                 if ( $descending ) {
 221                         ksort( $result );
 222                 } else {
 223                         krsort( $result );
 224                 }
 225
 226                 // enforce limit
 227                 $result = array_slice( $result, 0, $limit );
 228
 229                 // get rid of array keys
 230                 $result = array_values( $result );
 231
 232                 return new FakeResultWrapper( $result );
 233         }
 234
 235         function getQueryInfo() {
 236                 $revQuery = Revision::getQueryInfo( [ 'page', 'user' ] );
 237                 $queryInfo = [
 238                         'tables' => $revQuery['tables'],
 239                         'fields' => array_merge( $revQuery['fields'], [ 'page_is_new' ] ),
 240                         'conds' => [],
 241                         'options' => [],
 242                         'join_conds' => $revQuery['joins'],
 243                 ];
 244
 245                 if ( $this->contribs == 'newbie' ) {
 246                         $max = $this->mDb->selectField( 'user', 'max(user_id)', '', __METHOD__ );
 247                         $queryInfo['conds'][] = $revQuery['fields']['rev_user'] . ' >' . (int)( $max - $max / 100 );
 248                         # ignore local groups with the bot right
 249                         # @todo FIXME: Global groups may have 'bot' rights
 250                         $groupsWithBotPermission = User::getGroupsWithPermission( 'bot' );
 251                         if ( count( $groupsWithBotPermission ) ) {
 252                                 $queryInfo['tables'][] = 'user_groups';
 253                                 $queryInfo['conds'][] = 'ug_group IS NULL';
 254                                 $queryInfo['join_conds']['user_groups'] = [
 255                                         'LEFT JOIN', [
 256                                                 'ug_user = ' . $revQuery['fields']['rev_user'],
 257                                                 'ug_group' => $groupsWithBotPermission,
 258                                                 'ug_expiry IS NULL OR ug_expiry >= ' .
 259                                                         $this->mDb->addQuotes( $this->mDb->timestamp() )
 260                                         ]
 261                                 ];
 262                         }
 263                         // (T140537) Disallow looking too far in the past for 'newbies' queries. If the user requested
 264                         // a timestamp offset far in the past such that there are no edits by users with user_ids in
 265                         // the range, we would end up scanning all revisions from that offset until start of time.
 266                         $queryInfo['conds'][] = 'rev_timestamp > ' .
 267                                 $this->mDb->addQuotes( $this->mDb->timestamp( wfTimestamp() - 30 * 24 * 60 * 60 ) );
 268                 } else {
 269                         $user = User::newFromName( $this->target, false );
 270                         $ipRangeConds = $user->isAnon() ? $this->getIpRangeConds( $this->mDb, $this->target ) : null;
 271                         if ( $ipRangeConds ) {
 272                                 $queryInfo['tables'][] = 'ip_changes';
 273                                 /**
 274                                  * These aliases make `ORDER BY rev_timestamp, rev_id` from {@see getIndexField} and
 275                                  * {@see getExtraSortFields} use the replicated `ipc_rev_timestamp` and `ipc_rev_id`
 276                                  * columns from the `ip_changes` table, for more efficient queries.
 277                                  * @see https://phabricator.wikimedia.org/T200259#4832318
 278                                  */
 279                                 $queryInfo['fields'] = array_merge(
 280                                         [
 281                                                 'rev_timestamp' => 'ipc_rev_timestamp',
 282                                                 'rev_id' => 'ipc_rev_id',
 283                                         ],
 284                                         array_diff( $queryInfo['fields'], [
 285                                                 'rev_timestamp',
 286                                                 'rev_id',
 287                                         ] )
 288                                 );
 289                                 $queryInfo['join_conds']['ip_changes'] = [
 290                                         'LEFT JOIN', [ 'ipc_rev_id = rev_id' ]
 291                                 ];
 292                                 $queryInfo['conds'][] = $ipRangeConds;
 293                         } else {
 294                                 // tables and joins are already handled by Revision::getQueryInfo()
 295                                 $conds = ActorMigration::newMigration()->getWhere( $this->mDb, 'rev_user', $user );
 296                                 $queryInfo['conds'][] = $conds['conds'];
 297                                 // Force the appropriate index to avoid bad query plans (T189026)
 298                                 if ( isset( $conds['orconds']['actor'] ) ) {
 299                                         // @todo: This will need changing when revision_comment_temp goes away
 300                                         $queryInfo['options']['USE INDEX']['temp_rev_user'] = 'actor_timestamp';
 301                                         // Alias 'rev_timestamp' => 'revactor_timestamp' so "ORDER BY rev_timestamp" is interpreted to
 302                                         // use revactor_timestamp instead.
 303                                         $queryInfo['fields'] = array_merge(
 304                                                 array_diff( $queryInfo['fields'], [ 'rev_timestamp' ] ),
 305                                                 [ 'rev_timestamp' => 'revactor_timestamp' ]
 306                                         );
 307                                 } else {
 308                                         $queryInfo['options']['USE INDEX']['revision'] =
 309                                                 isset( $conds['orconds']['userid'] ) ? 'user_timestamp' : 'usertext_timestamp';
 310                                 }
 311                         }
 312                 }
 313
 314                 if ( $this->deletedOnly ) {
 315                         $queryInfo['conds'][] = 'rev_deleted != 0';
 316                 }
 317
 318                 if ( $this->topOnly ) {
 319                         $queryInfo['conds'][] = 'rev_id = page_latest';
 320                 }
 321
 322                 if ( $this->newOnly ) {
 323                         $queryInfo['conds'][] = 'rev_parent_id = 0';
 324                 }
 325
 326                 if ( $this->hideMinor ) {
 327                         $queryInfo['conds'][] = 'rev_minor_edit = 0';
 328                 }
 329
 330                 $user = $this->getUser();
 331                 $queryInfo['conds'] = array_merge( $queryInfo['conds'], $this->getNamespaceCond() );
 332
 333                 // Paranoia: avoid brute force searches (T19342)
 334                 if ( !$user->isAllowed( 'deletedhistory' ) ) {
 335                         $queryInfo['conds'][] = $this->mDb->bitAnd( 'rev_deleted', Revision::DELETED_USER ) . ' = 0';
 336                 } elseif ( !$user->isAllowedAny( 'suppressrevision', 'viewsuppressed' ) ) {
 337                         $queryInfo['conds'][] = $this->mDb->bitAnd( 'rev_deleted', Revision::SUPPRESSED_USER ) .
 338                                 ' != ' . Revision::SUPPRESSED_USER;
 339                 }
 340
 341                 // For IPv6, we use ipc_rev_timestamp on ip_changes as the index field,
 342                 // which will be referenced when parsing the results of a query.
 343                 if ( self::isQueryableRange( $this->target ) ) {
 344                         $queryInfo['fields'][] = 'ipc_rev_timestamp';
 345                 }
 346
 347                 ChangeTags::modifyDisplayQuery(
 348                         $queryInfo['tables'],
 349                         $queryInfo['fields'],
 350                         $queryInfo['conds'],
 351                         $queryInfo['join_conds'],
 352                         $queryInfo['options'],
 353                         $this->tagFilter
 354                 );
 355
 356                 // Avoid PHP 7.1 warning from passing $this by reference
 357                 $pager = $this;
 358                 Hooks::run( 'ContribsPager::getQueryInfo', [ &$pager, &$queryInfo ] );
 359
 360                 return $queryInfo;
 361         }
 362
 363         function getNamespaceCond() {
 364                 if ( $this->namespace !== '' ) {
 365                         $selectedNS = $this->mDb->addQuotes( $this->namespace );
 366                         $eq_op = $this->nsInvert ? '!=' : '=';
 367                         $bool_op = $this->nsInvert ? 'AND' : 'OR';
 368
 369                         if ( !$this->associated ) {
 370                                 return [ "page_namespace $eq_op $selectedNS" ];
 371                         }
 372
 373                         $associatedNS = $this->mDb->addQuotes(
 374                                 MWNamespace::getAssociated( $this->namespace )
 375                         );
 376
 377                         return [
 378                                 "page_namespace $eq_op $selectedNS " .
 379                                 $bool_op .
 380                                 " page_namespace $eq_op $associatedNS"
 381                         ];
 382                 }
 383
 384                 return [];
 385         }
 386
 387         /**
 388          * Get SQL conditions for an IP range, if applicable
 389          * @param IDatabase      $db
 390          * @param string         $ip The IP address or CIDR
 391          * @return string|false  SQL for valid IP ranges, false if invalid
 392          */
 393         private function getIpRangeConds( $db, $ip ) {
 394                 // First make sure it is a valid range and they are not outside the CIDR limit
 395                 if ( !$this->isQueryableRange( $ip ) ) {
 396                         return false;
 397                 }
 398
 399                 list( $start, $end ) = IP::parseRange( $ip );
 400
 401                 return 'ipc_hex BETWEEN ' . $db->addQuotes( $start ) . ' AND ' . $db->addQuotes( $end );
 402         }
 403
 404         /**
 405          * Is the given IP a range and within the CIDR limit?
 406          *
 407          * @param string $ipRange
 408          * @return bool True if it is valid
 409          * @since 1.30
 410          */
 411         public function isQueryableRange( $ipRange ) {
 412                 $limits = $this->getConfig()->get( 'RangeContributionsCIDRLimit' );
 413
 414                 $bits = IP::parseCIDR( $ipRange )[1];
 415                 if (
 416                         ( $bits === false ) ||
 417                         ( IP::isIPv4( $ipRange ) && $bits < $limits['IPv4'] ) ||
 418                         ( IP::isIPv6( $ipRange ) && $bits < $limits['IPv6'] )
 419                 ) {
 420                         return false;
 421                 }
 422
 423                 return true;
 424         }
 425
 426         /**
 427          * @return string
 428          */
 429         public function getIndexField() {
 430                 // Note this is run via parent::__construct() *before* $this->target is set!
 431                 return 'rev_timestamp';
 432         }
 433
 434         /**
 435          * @return string[]
 436          */
 437         protected function getExtraSortFields() {
 438                 // Note this is run via parent::__construct() *before* $this->target is set!
 439                 return [ 'rev_id' ];
 440         }
 441
 442         protected function doBatchLookups() {
 443                 # Do a link batch query
 444                 $this->mResult->seek( 0 );
 445                 $parentRevIds = [];
 446                 $this->mParentLens = [];
 447                 $batch = new LinkBatch();
 448                 $isIpRange = $this->isQueryableRange( $this->target );
 449                 # Give some pointers to make (last) links
 450                 foreach ( $this->mResult as $row ) {
 451                         if ( isset( $row->rev_parent_id ) && $row->rev_parent_id ) {
 452                                 $parentRevIds[] = $row->rev_parent_id;
 453                         }
 454                         if ( isset( $row->rev_id ) ) {
 455                                 $this->mParentLens[$row->rev_id] = $row->rev_len;
 456                                 if ( $this->contribs === 'newbie' ) { // multiple users
 457                                         $batch->add( NS_USER, $row->user_name );
 458                                         $batch->add( NS_USER_TALK, $row->user_name );
 459                                 } elseif ( $isIpRange ) {
 460                                         // If this is an IP range, batch the IP's talk page
 461                                         $batch->add( NS_USER_TALK, $row->rev_user_text );
 462                                 }
 463                                 $batch->add( $row->page_namespace, $row->page_title );
 464                         }
 465                 }
 466                 # Fetch rev_len for revisions not already scanned above
 467                 $this->mParentLens += Revision::getParentLengths(
 468                         $this->mDbSecondary,
 469                         array_diff( $parentRevIds, array_keys( $this->mParentLens ) )
 470                 );
 471                 $batch->execute();
 472                 $this->mResult->seek( 0 );
 473         }
 474
 475         /**
 476          * @return string
 477          */
 478         protected function getStartBody() {
 479                 return "<ul class=\"mw-contributions-list\">\n";
 480         }
 481
 482         /**
 483          * @return string
 484          */
 485         protected function getEndBody() {
 486                 return "</ul>\n";
 487         }
 488
 489         /**
 490          * Check whether the revision associated is valid for formatting. If has no associated revision
 491          * id then null is returned.
 492          *
 493          * @param object $row
 494          * @param Title|null $title
 495          * @return Revision|null
 496          */
 497         public function tryToCreateValidRevision( $row, $title = null ) {
 498                 /*
 499                  * There may be more than just revision rows. To make sure that we'll only be processing
 500                  * revisions here, let's _try_ to build a revision out of our row (without displaying
 501                  * notices though) and then trying to grab data from the built object. If we succeed,
 502                  * we're definitely dealing with revision data and we may proceed, if not, we'll leave it
 503                  * to extensions to subscribe to the hook to parse the row.
 504                  */
 505                 Wikimedia\suppressWarnings();
 506                 try {
 507                         $rev = new Revision( $row, 0, $title );
 508                         $validRevision = (bool)$rev->getId();
 509                 } catch ( Exception $e ) {
 510                         $validRevision = false;
 511                 }
 512                 Wikimedia\restoreWarnings();
 513                 return $validRevision ? $rev : null;
 514         }
 515
 516         /**
 517          * Generates each row in the contributions list.
 518          *
 519          * Contributions which are marked "top" are currently on top of the history.
 520          * For these contributions, a [rollback] link is shown for users with roll-
 521          * back privileges. The rollback link restores the most recent version that
 522          * was not written by the target user.
 523          *
 524          * @todo This would probably look a lot nicer in a table.
 525          * @param object $row
 526          * @return string
 527          */
 528         function formatRow( $row ) {
 529                 $ret = '';
 530                 $classes = [];
 531                 $attribs = [];
 532
 533                 $linkRenderer = MediaWikiServices::getInstance()->getLinkRenderer();
 534
 535                 $page = null;
 536                 // Create a title for the revision if possible
 537                 // Rows from the hook may not include title information
 538                 if ( isset( $row->page_namespace ) && isset( $row->page_title ) ) {
 539                         $page = Title::newFromRow( $row );
 540                 }
 541                 $rev = $this->tryToCreateValidRevision( $row, $page );
 542                 if ( $rev ) {
 543                         $attribs['data-mw-revid'] = $rev->getId();
 544
 545                         $link = $linkRenderer->makeLink(
 546                                 $page,
 547                                 $page->getPrefixedText(),
 548                                 [ 'class' => 'mw-contributions-title' ],
 549                                 $page->isRedirect() ? [ 'redirect' => 'no' ] : []
 550                         );
 551                         # Mark current revisions
 552                         $topmarktext = '';
 553                         $user = $this->getUser();
 554
 555                         if ( $row->rev_id === $row->page_latest ) {
 556                                 $topmarktext .= '<span class="mw-uctop">' . $this->messages['uctop'] . '</span>';
 557                                 $classes[] = 'mw-contributions-current';
 558                                 # Add rollback link
 559                                 if ( !$row->page_is_new && $page->quickUserCan( 'rollback', $user )
 560                                         && $page->quickUserCan( 'edit', $user )
 561                                 ) {
 562                                         $this->preventClickjacking();
 563                                         $topmarktext .= ' ' . Linker::generateRollback( $rev, $this->getContext() );
 564                                 }
 565                         }
 566                         # Is there a visible previous revision?
 567                         if ( $rev->userCan( Revision::DELETED_TEXT, $user ) && $rev->getParentId() !== 0 ) {
 568                                 $difftext = $linkRenderer->makeKnownLink(
 569                                         $page,
 570                                         new HtmlArmor( $this->messages['diff'] ),
 571                                         [ 'class' => 'mw-changeslist-diff' ],
 572                                         [
 573                                                 'diff' => 'prev',
 574                                                 'oldid' => $row->rev_id
 575                                         ]
 576                                 );
 577                         } else {
 578                                 $difftext = $this->messages['diff'];
 579                         }
 580                         $histlink = $linkRenderer->makeKnownLink(
 581                                 $page,
 582                                 new HtmlArmor( $this->messages['hist'] ),
 583                                 [ 'class' => 'mw-changeslist-history' ],
 584                                 [ 'action' => 'history' ]
 585                         );
 586
 587                         if ( $row->rev_parent_id === null ) {
 588                                 // For some reason rev_parent_id isn't populated for this row.
 589                                 // Its rumoured this is true on wikipedia for some revisions (T36922).
 590                                 // Next best thing is to have the total number of bytes.
 591                                 $chardiff = ' <span class="mw-changeslist-separator"></span> ';
 592                                 $chardiff .= Linker::formatRevisionSize( $row->rev_len );
 593                                 $chardiff .= ' <span class="mw-changeslist-separator"></span> ';
 594                         } else {
 595                                 $parentLen = 0;
 596                                 if ( isset( $this->mParentLens[$row->rev_parent_id] ) ) {
 597                                         $parentLen = $this->mParentLens[$row->rev_parent_id];
 598                                 }
 599
 600                                 $chardiff = ' <span class="mw-changeslist-separator"></span> ';
 601                                 $chardiff .= ChangesList::showCharacterDifference(
 602                                         $parentLen,
 603                                         $row->rev_len,
 604                                         $this->getContext()
 605                                 );
 606                                 $chardiff .= ' <span class="mw-changeslist-separator"></span> ';
 607                         }
 608
 609                         $lang = $this->getLanguage();
 610                         $comment = $lang->getDirMark() . Linker::revComment( $rev, false, true, false );
 611                         $date = $lang->userTimeAndDate( $row->rev_timestamp, $user );
 612                         if ( $rev->userCan( Revision::DELETED_TEXT, $user ) ) {
 613                                 $d = $linkRenderer->makeKnownLink(
 614                                         $page,
 615                                         $date,
 616                                         [ 'class' => 'mw-changeslist-date' ],
 617                                         [ 'oldid' => intval( $row->rev_id ) ]
 618                                 );
 619                         } else {
 620                                 $d = htmlspecialchars( $date );
 621                         }
 622                         if ( $rev->isDeleted( Revision::DELETED_TEXT ) ) {
 623                                 $d = '<span class="history-deleted">' . $d . '</span>';
 624                         }
 625
 626                         # Show user names for /newbies as there may be different users.
 627                         # Note that only unprivileged users have rows with hidden user names excluded.
 628                         # When querying for an IP range, we want to always show user and user talk links.
 629                         $userlink = '';
 630                         if ( ( $this->contribs == 'newbie' && !$rev->isDeleted( Revision::DELETED_USER ) )
 631                                 || $this->isQueryableRange( $this->target ) ) {
 632                                 $userlink = ' <span class="mw-changeslist-separator"></span> '
 633                                         . $lang->getDirMark()
 634                                         . Linker::userLink( $rev->getUser(), $rev->getUserText() );
 635                                 $userlink .= ' ' . $this->msg( 'parentheses' )->rawParams(
 636                                         Linker::userTalkLink( $rev->getUser(), $rev->getUserText() ) )->escaped() . ' ';
 637                         }
 638
 639                         $flags = [];
 640                         if ( $rev->getParentId() === 0 ) {
 641                                 $flags[] = ChangesList::flag( 'newpage' );
 642                         }
 643
 644                         if ( $rev->isMinor() ) {
 645                                 $flags[] = ChangesList::flag( 'minor' );
 646                         }
 647
 648                         $del = Linker::getRevDeleteLink( $user, $rev, $page );
 649                         if ( $del !== '' ) {
 650                                 $del .= ' ';
 651                         }
 652
 653                         // While it might be tempting to use a list here
 654                         // this would result in clutter and slows down navigating the content
 655                         // in assistive technology.
 656                         // See https://phabricator.wikimedia.org/T205581#4734812
 657                         $diffHistLinks = Html::rawElement( 'span',
 658                                 [ 'class' => 'mw-changeslist-links' ],
 659                                 // The spans are needed to ensure the dividing '|' elements are not
 660                                 // themselves styled as links.
 661                                 Html::rawElement( 'span', [], $difftext ) .
 662                                 ' ' . // Space needed for separating two words.
 663                                 Html::rawElement( 'span', [], $histlink )
 664                         );
 665
 666                         # Tags, if any.
 667                         list( $tagSummary, $newClasses ) = ChangeTags::formatSummaryRow(
 668                                 $row->ts_tags,
 669                                 'contributions',
 670                                 $this->getContext()
 671                         );
 672                         $classes = array_merge( $classes, $newClasses );
 673
 674                         Hooks::run( 'SpecialContributions::formatRow::flags', [ $this->getContext(), $row, &$flags ] );
 675
 676                         $templateParams = [
 677                                 'del' => $del,
 678                                 'timestamp' => $d,
 679                                 'diffHistLinks' => $diffHistLinks,
 680                                 'charDifference' => $chardiff,
 681                                 'flags' => $flags,
 682                                 'articleLink' => $link,
 683                                 'userlink' => $userlink,
 684                                 'logText' => $comment,
 685                                 'topmarktext' => $topmarktext,
 686                                 'tagSummary' => $tagSummary,
 687                         ];
 688
 689                         # Denote if username is redacted for this edit
 690                         if ( $rev->isDeleted( Revision::DELETED_USER ) ) {
 691                                 $templateParams['rev-deleted-user-contribs'] =
 692                                         $this->msg( 'rev-deleted-user-contribs' )->escaped();
 693                         }
 694
 695                         $ret = $this->templateParser->processTemplate(
 696                                 'SpecialContributionsLine',
 697                                 $templateParams
 698                         );
 699                 }
 700
 701                 // Let extensions add data
 702                 Hooks::run( 'ContributionsLineEnding', [ $this, &$ret, $row, &$classes, &$attribs ] );
 703                 $attribs = array_filter( $attribs,
 704                         [ Sanitizer::class, 'isReservedDataAttribute' ],
 705                         ARRAY_FILTER_USE_KEY
 706                 );
 707
 708                 // TODO: Handle exceptions in the catch block above.  Do any extensions rely on
 709                 // receiving empty rows?
 710
 711                 if ( $classes === [] && $attribs === [] && $ret === '' ) {
 712                         wfDebug( "Dropping Special:Contribution row that could not be formatted\n" );
 713                         return "<!-- Could not format Special:Contribution row. -->\n";
 714                 }
 715                 $attribs['class'] = $classes;
 716
 717                 // FIXME: The signature of the ContributionsLineEnding hook makes it
 718                 // very awkward to move this LI wrapper into the template.
 719                 return Html::rawElement( 'li', $attribs, $ret ) . "\n";
 720         }
 721
 722         /**
 723          * Overwrite Pager function and return a helpful comment
 724          * @return string
 725          */
 726         function getSqlComment() {
 727                 if ( $this->namespace || $this->deletedOnly ) {
 728                         // potentially slow, see CR r58153
 729                         return 'contributions page filtered for namespace or RevisionDeleted edits';
 730                 } else {
 731                         return 'contributions page unfiltered';
 732                 }
 733         }
 734
 735         protected function preventClickjacking() {
 736                 $this->preventClickjacking = true;
 737         }
 738
 739         /**
 740          * @return bool
 741          */
 742         public function getPreventClickjacking() {
 743                 return $this->preventClickjacking;
 744         }
 745
 746         /**
 747          * Set up date filter options, given request data.
 748          *
 749          * @param array $opts Options array
 750          * @return array Options array with processed start and end date filter options
 751          */
 752         public static function processDateFilter( array $opts ) {
 753                 $start = $opts['start'] ?? '';
 754                 $end = $opts['end'] ?? '';
 755                 $year = $opts['year'] ?? '';
 756                 $month = $opts['month'] ?? '';
 757
 758                 if ( $start !== '' && $end !== '' && $start > $end ) {
 759                         $temp = $start;
 760                         $start = $end;
 761                         $end = $temp;
 762                 }
 763
 764                 // If year/month legacy filtering options are set, convert them to display the new stamp
 765                 if ( $year !== '' || $month !== '' ) {
 766                         // Reuse getDateCond logic, but subtract a day because
 767                         // the endpoints of our date range appear inclusive
 768                         // but the internal end offsets are always exclusive
 769                         $legacyTimestamp = ReverseChronologicalPager::getOffsetDate( $year, $month );
 770                         $legacyDateTime = new DateTime( $legacyTimestamp->getTimestamp( TS_ISO_8601 ) );
 771                         $legacyDateTime = $legacyDateTime->modify( '-1 day' );
 772
 773                         // Clear the new timestamp range options if used and
 774                         // replace with the converted legacy timestamp
 775                         $start = '';
 776                         $end = $legacyDateTime->format( 'Y-m-d' );
 777                 }
 778
 779                 $opts['start'] = $start;
 780                 $opts['end'] = $end;
 781
 782                 return $opts;
 783         }
 784 }