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          * Wrap the navigation bar in a p element with identifying class.
 159          * In future we may want to change the `p` tag to a `div` and upstream
 160          * this to the parent class.
 161          *
 162          * @return string HTML
 163          */
 164         function getNavigationBar() {
 165                 return Html::rawElement( 'p', [ 'class' => 'mw-pager-navigation-bar' ],
 166                         parent::getNavigationBar()
 167                 );
 168         }
 169
 170         /**
 171          * This method basically executes the exact same code as the parent class, though with
 172          * a hook added, to allow extensions to add additional queries.
 173          *
 174          * @param string $offset Index offset, inclusive
 175          * @param int $limit Exact query limit
 176          * @param bool $order IndexPager::QUERY_ASCENDING or IndexPager::QUERY_DESCENDING
 177          * @return IResultWrapper
 178          */
 179         function reallyDoQuery( $offset, $limit, $order ) {
 180                 list( $tables, $fields, $conds, $fname, $options, $join_conds ) = $this->buildQueryInfo(
 181                         $offset,
 182                         $limit,
 183                         $order
 184                 );
 185
 186                 /*
 187                  * This hook will allow extensions to add in additional queries, so they can get their data
 188                  * in My Contributions as well. Extensions should append their results to the $data array.
 189                  *
 190                  * Extension queries have to implement the navbar requirement as well. They should
 191                  * - have a column aliased as $pager->getIndexField()
 192                  * - have LIMIT set
 193                  * - have a WHERE-clause that compares the $pager->getIndexField()-equivalent column to the offset
 194                  * - have the ORDER BY specified based upon the details provided by the navbar
 195                  *
 196                  * See includes/Pager.php buildQueryInfo() method on how to build LIMIT, WHERE & ORDER BY
 197                  *
 198                  * &$data: an array of results of all contribs queries
 199                  * $pager: the ContribsPager object hooked into
 200                  * $offset: see phpdoc above
 201                  * $limit: see phpdoc above
 202                  * $descending: see phpdoc above
 203                  */
 204                 $data = [ $this->mDb->select(
 205                         $tables, $fields, $conds, $fname, $options, $join_conds
 206                 ) ];
 207                 Hooks::run(
 208                         'ContribsPager::reallyDoQuery',
 209                         [ &$data, $this, $offset, $limit, $order ]
 210                 );
 211
 212                 $result = [];
 213
 214                 // loop all results and collect them in an array
 215                 foreach ( $data as $query ) {
 216                         foreach ( $query as $i => $row ) {
 217                                 // use index column as key, allowing us to easily sort in PHP
 218                                 $result[$row->{$this->getIndexField()} . "-$i"] = $row;
 219                         }
 220                 }
 221
 222                 // sort results
 223                 if ( $order === self::QUERY_ASCENDING ) {
 224                         ksort( $result );
 225                 } else {
 226                         krsort( $result );
 227                 }
 228
 229                 // enforce limit
 230                 $result = array_slice( $result, 0, $limit );
 231
 232                 // get rid of array keys
 233                 $result = array_values( $result );
 234
 235                 return new FakeResultWrapper( $result );
 236         }
 237
 238         function getQueryInfo() {
 239                 $revQuery = Revision::getQueryInfo( [ 'page', 'user' ] );
 240                 $queryInfo = [
 241                         'tables' => $revQuery['tables'],
 242                         'fields' => array_merge( $revQuery['fields'], [ 'page_is_new' ] ),
 243                         'conds' => [],
 244                         'options' => [],
 245                         'join_conds' => $revQuery['joins'],
 246                 ];
 247
 248                 if ( $this->contribs == 'newbie' ) {
 249                         $max = $this->mDb->selectField( 'user', 'max(user_id)', '', __METHOD__ );
 250                         $queryInfo['conds'][] = $revQuery['fields']['rev_user'] . ' >' . (int)( $max - $max / 100 );
 251                         # ignore local groups with the bot right
 252                         # @todo FIXME: Global groups may have 'bot' rights
 253                         $groupsWithBotPermission = User::getGroupsWithPermission( 'bot' );
 254                         if ( count( $groupsWithBotPermission ) ) {
 255                                 $queryInfo['tables'][] = 'user_groups';
 256                                 $queryInfo['conds'][] = 'ug_group IS NULL';
 257                                 $queryInfo['join_conds']['user_groups'] = [
 258                                         'LEFT JOIN', [
 259                                                 'ug_user = ' . $revQuery['fields']['rev_user'],
 260                                                 'ug_group' => $groupsWithBotPermission,
 261                                                 'ug_expiry IS NULL OR ug_expiry >= ' .
 262                                                         $this->mDb->addQuotes( $this->mDb->timestamp() )
 263                                         ]
 264                                 ];
 265                         }
 266                         // (T140537) Disallow looking too far in the past for 'newbies' queries. If the user requested
 267                         // a timestamp offset far in the past such that there are no edits by users with user_ids in
 268                         // the range, we would end up scanning all revisions from that offset until start of time.
 269                         $queryInfo['conds'][] = 'rev_timestamp > ' .
 270                                 $this->mDb->addQuotes( $this->mDb->timestamp( wfTimestamp() - 30 * 24 * 60 * 60 ) );
 271                 } else {
 272                         $user = User::newFromName( $this->target, false );
 273                         $ipRangeConds = $user->isAnon() ? $this->getIpRangeConds( $this->mDb, $this->target ) : null;
 274                         if ( $ipRangeConds ) {
 275                                 $queryInfo['tables'][] = 'ip_changes';
 276                                 /**
 277                                  * These aliases make `ORDER BY rev_timestamp, rev_id` from {@see getIndexField} and
 278                                  * {@see getExtraSortFields} use the replicated `ipc_rev_timestamp` and `ipc_rev_id`
 279                                  * columns from the `ip_changes` table, for more efficient queries.
 280                                  * @see https://phabricator.wikimedia.org/T200259#4832318
 281                                  */
 282                                 $queryInfo['fields'] = array_merge(
 283                                         [
 284                                                 'rev_timestamp' => 'ipc_rev_timestamp',
 285                                                 'rev_id' => 'ipc_rev_id',
 286                                         ],
 287                                         array_diff( $queryInfo['fields'], [
 288                                                 'rev_timestamp',
 289                                                 'rev_id',
 290                                         ] )
 291                                 );
 292                                 $queryInfo['join_conds']['ip_changes'] = [
 293                                         'LEFT JOIN', [ 'ipc_rev_id = rev_id' ]
 294                                 ];
 295                                 $queryInfo['conds'][] = $ipRangeConds;
 296                         } else {
 297                                 // tables and joins are already handled by Revision::getQueryInfo()
 298                                 $conds = ActorMigration::newMigration()->getWhere( $this->mDb, 'rev_user', $user );
 299                                 $queryInfo['conds'][] = $conds['conds'];
 300                                 // Force the appropriate index to avoid bad query plans (T189026)
 301                                 if ( isset( $conds['orconds']['actor'] ) ) {
 302                                         // @todo: This will need changing when revision_comment_temp goes away
 303                                         $queryInfo['options']['USE INDEX']['temp_rev_user'] = 'actor_timestamp';
 304                                         // Alias 'rev_timestamp' => 'revactor_timestamp' and 'rev_id' => 'revactor_rev' so
 305                                         // "ORDER BY rev_timestamp, rev_id" is interpreted to use denormalized revision_actor_temp
 306                                         // fields instead.
 307                                         $queryInfo['fields'] = array_merge(
 308                                                 array_diff( $queryInfo['fields'], [ 'rev_timestamp', 'rev_id' ] ),
 309                                                 [ 'rev_timestamp' => 'revactor_timestamp', 'rev_id' => 'revactor_rev' ]
 310                                         );
 311                                 } else {
 312                                         $queryInfo['options']['USE INDEX']['revision'] =
 313                                                 isset( $conds['orconds']['userid'] ) ? 'user_timestamp' : 'usertext_timestamp';
 314                                 }
 315                         }
 316                 }
 317
 318                 if ( $this->deletedOnly ) {
 319                         $queryInfo['conds'][] = 'rev_deleted != 0';
 320                 }
 321
 322                 if ( $this->topOnly ) {
 323                         $queryInfo['conds'][] = 'rev_id = page_latest';
 324                 }
 325
 326                 if ( $this->newOnly ) {
 327                         $queryInfo['conds'][] = 'rev_parent_id = 0';
 328                 }
 329
 330                 if ( $this->hideMinor ) {
 331                         $queryInfo['conds'][] = 'rev_minor_edit = 0';
 332                 }
 333
 334                 $user = $this->getUser();
 335                 $queryInfo['conds'] = array_merge( $queryInfo['conds'], $this->getNamespaceCond() );
 336
 337                 // Paranoia: avoid brute force searches (T19342)
 338                 if ( !$user->isAllowed( 'deletedhistory' ) ) {
 339                         $queryInfo['conds'][] = $this->mDb->bitAnd( 'rev_deleted', Revision::DELETED_USER ) . ' = 0';
 340                 } elseif ( !$user->isAllowedAny( 'suppressrevision', 'viewsuppressed' ) ) {
 341                         $queryInfo['conds'][] = $this->mDb->bitAnd( 'rev_deleted', Revision::SUPPRESSED_USER ) .
 342                                 ' != ' . Revision::SUPPRESSED_USER;
 343                 }
 344
 345                 // For IPv6, we use ipc_rev_timestamp on ip_changes as the index field,
 346                 // which will be referenced when parsing the results of a query.
 347                 if ( self::isQueryableRange( $this->target ) ) {
 348                         $queryInfo['fields'][] = 'ipc_rev_timestamp';
 349                 }
 350
 351                 ChangeTags::modifyDisplayQuery(
 352                         $queryInfo['tables'],
 353                         $queryInfo['fields'],
 354                         $queryInfo['conds'],
 355                         $queryInfo['join_conds'],
 356                         $queryInfo['options'],
 357                         $this->tagFilter
 358                 );
 359
 360                 // Avoid PHP 7.1 warning from passing $this by reference
 361                 $pager = $this;
 362                 Hooks::run( 'ContribsPager::getQueryInfo', [ &$pager, &$queryInfo ] );
 363
 364                 return $queryInfo;
 365         }
 366
 367         function getNamespaceCond() {
 368                 if ( $this->namespace !== '' ) {
 369                         $selectedNS = $this->mDb->addQuotes( $this->namespace );
 370                         $eq_op = $this->nsInvert ? '!=' : '=';
 371                         $bool_op = $this->nsInvert ? 'AND' : 'OR';
 372
 373                         if ( !$this->associated ) {
 374                                 return [ "page_namespace $eq_op $selectedNS" ];
 375                         }
 376
 377                         $associatedNS = $this->mDb->addQuotes(
 378                                 MWNamespace::getAssociated( $this->namespace )
 379                         );
 380
 381                         return [
 382                                 "page_namespace $eq_op $selectedNS " .
 383                                 $bool_op .
 384                                 " page_namespace $eq_op $associatedNS"
 385                         ];
 386                 }
 387
 388                 return [];
 389         }
 390
 391         /**
 392          * Get SQL conditions for an IP range, if applicable
 393          * @param IDatabase      $db
 394          * @param string         $ip The IP address or CIDR
 395          * @return string|false  SQL for valid IP ranges, false if invalid
 396          */
 397         private function getIpRangeConds( $db, $ip ) {
 398                 // First make sure it is a valid range and they are not outside the CIDR limit
 399                 if ( !$this->isQueryableRange( $ip ) ) {
 400                         return false;
 401                 }
 402
 403                 list( $start, $end ) = IP::parseRange( $ip );
 404
 405                 return 'ipc_hex BETWEEN ' . $db->addQuotes( $start ) . ' AND ' . $db->addQuotes( $end );
 406         }
 407
 408         /**
 409          * Is the given IP a range and within the CIDR limit?
 410          *
 411          * @param string $ipRange
 412          * @return bool True if it is valid
 413          * @since 1.30
 414          */
 415         public function isQueryableRange( $ipRange ) {
 416                 $limits = $this->getConfig()->get( 'RangeContributionsCIDRLimit' );
 417
 418                 $bits = IP::parseCIDR( $ipRange )[1];
 419                 if (
 420                         ( $bits === false ) ||
 421                         ( IP::isIPv4( $ipRange ) && $bits < $limits['IPv4'] ) ||
 422                         ( IP::isIPv6( $ipRange ) && $bits < $limits['IPv6'] )
 423                 ) {
 424                         return false;
 425                 }
 426
 427                 return true;
 428         }
 429
 430         /**
 431          * @return string
 432          */
 433         public function getIndexField() {
 434                 // Note this is run via parent::__construct() *before* $this->target is set!
 435                 return 'rev_timestamp';
 436         }
 437
 438         /**
 439          * @return false|string
 440          */
 441         public function getTagFilter() {
 442                 return $this->tagFilter;
 443         }
 444
 445         /**
 446          * @return string
 447          */
 448         public function getContribs() {
 449                 return $this->contribs;
 450         }
 451
 452         /**
 453          * @return string
 454          */
 455         public function getTarget() {
 456                 return $this->target;
 457         }
 458
 459         /**
 460          * @return bool
 461          */
 462         public function isNewOnly() {
 463                 return $this->newOnly;
 464         }
 465
 466         /**
 467          * @return int|string
 468          */
 469         public function getNamespace() {
 470                 return $this->namespace;
 471         }
 472
 473         /**
 474          * @return string[]
 475          */
 476         protected function getExtraSortFields() {
 477                 // Note this is run via parent::__construct() *before* $this->target is set!
 478                 return [ 'rev_id' ];
 479         }
 480
 481         protected function doBatchLookups() {
 482                 # Do a link batch query
 483                 $this->mResult->seek( 0 );
 484                 $parentRevIds = [];
 485                 $this->mParentLens = [];
 486                 $batch = new LinkBatch();
 487                 $isIpRange = $this->isQueryableRange( $this->target );
 488                 # Give some pointers to make (last) links
 489                 foreach ( $this->mResult as $row ) {
 490                         if ( isset( $row->rev_parent_id ) && $row->rev_parent_id ) {
 491                                 $parentRevIds[] = $row->rev_parent_id;
 492                         }
 493                         if ( isset( $row->rev_id ) ) {
 494                                 $this->mParentLens[$row->rev_id] = $row->rev_len;
 495                                 if ( $this->contribs === 'newbie' ) { // multiple users
 496                                         $batch->add( NS_USER, $row->user_name );
 497                                         $batch->add( NS_USER_TALK, $row->user_name );
 498                                 } elseif ( $isIpRange ) {
 499                                         // If this is an IP range, batch the IP's talk page
 500                                         $batch->add( NS_USER_TALK, $row->rev_user_text );
 501                                 }
 502                                 $batch->add( $row->page_namespace, $row->page_title );
 503                         }
 504                 }
 505                 # Fetch rev_len for revisions not already scanned above
 506                 $this->mParentLens += Revision::getParentLengths(
 507                         $this->mDbSecondary,
 508                         array_diff( $parentRevIds, array_keys( $this->mParentLens ) )
 509                 );
 510                 $batch->execute();
 511                 $this->mResult->seek( 0 );
 512         }
 513
 514         /**
 515          * @return string
 516          */
 517         protected function getStartBody() {
 518                 return "<ul class=\"mw-contributions-list\">\n";
 519         }
 520
 521         /**
 522          * @return string
 523          */
 524         protected function getEndBody() {
 525                 return "</ul>\n";
 526         }
 527
 528         /**
 529          * Check whether the revision associated is valid for formatting. If has no associated revision
 530          * id then null is returned.
 531          *
 532          * @param object $row
 533          * @param Title|null $title
 534          * @return Revision|null
 535          */
 536         public function tryToCreateValidRevision( $row, $title = null ) {
 537                 /*
 538                  * There may be more than just revision rows. To make sure that we'll only be processing
 539                  * revisions here, let's _try_ to build a revision out of our row (without displaying
 540                  * notices though) and then trying to grab data from the built object. If we succeed,
 541                  * we're definitely dealing with revision data and we may proceed, if not, we'll leave it
 542                  * to extensions to subscribe to the hook to parse the row.
 543                  */
 544                 Wikimedia\suppressWarnings();
 545                 try {
 546                         $rev = new Revision( $row, 0, $title );
 547                         $validRevision = (bool)$rev->getId();
 548                 } catch ( Exception $e ) {
 549                         $validRevision = false;
 550                 }
 551                 Wikimedia\restoreWarnings();
 552                 return $validRevision ? $rev : null;
 553         }
 554
 555         /**
 556          * Generates each row in the contributions list.
 557          *
 558          * Contributions which are marked "top" are currently on top of the history.
 559          * For these contributions, a [rollback] link is shown for users with roll-
 560          * back privileges. The rollback link restores the most recent version that
 561          * was not written by the target user.
 562          *
 563          * @todo This would probably look a lot nicer in a table.
 564          * @param object $row
 565          * @return string
 566          */
 567         function formatRow( $row ) {
 568                 $ret = '';
 569                 $classes = [];
 570                 $attribs = [];
 571
 572                 $linkRenderer = MediaWikiServices::getInstance()->getLinkRenderer();
 573
 574                 $page = null;
 575                 // Create a title for the revision if possible
 576                 // Rows from the hook may not include title information
 577                 if ( isset( $row->page_namespace ) && isset( $row->page_title ) ) {
 578                         $page = Title::newFromRow( $row );
 579                 }
 580                 $rev = $this->tryToCreateValidRevision( $row, $page );
 581                 if ( $rev ) {
 582                         $attribs['data-mw-revid'] = $rev->getId();
 583
 584                         $link = $linkRenderer->makeLink(
 585                                 $page,
 586                                 $page->getPrefixedText(),
 587                                 [ 'class' => 'mw-contributions-title' ],
 588                                 $page->isRedirect() ? [ 'redirect' => 'no' ] : []
 589                         );
 590                         # Mark current revisions
 591                         $topmarktext = '';
 592                         $user = $this->getUser();
 593
 594                         if ( $row->rev_id === $row->page_latest ) {
 595                                 $topmarktext .= '<span class="mw-uctop">' . $this->messages['uctop'] . '</span>';
 596                                 $classes[] = 'mw-contributions-current';
 597                                 # Add rollback link
 598                                 if ( !$row->page_is_new && $page->quickUserCan( 'rollback', $user )
 599                                         && $page->quickUserCan( 'edit', $user )
 600                                 ) {
 601                                         $this->preventClickjacking();
 602                                         $topmarktext .= ' ' . Linker::generateRollback( $rev, $this->getContext() );
 603                                 }
 604                         }
 605                         # Is there a visible previous revision?
 606                         if ( $rev->userCan( Revision::DELETED_TEXT, $user ) && $rev->getParentId() !== 0 ) {
 607                                 $difftext = $linkRenderer->makeKnownLink(
 608                                         $page,
 609                                         new HtmlArmor( $this->messages['diff'] ),
 610                                         [ 'class' => 'mw-changeslist-diff' ],
 611                                         [
 612                                                 'diff' => 'prev',
 613                                                 'oldid' => $row->rev_id
 614                                         ]
 615                                 );
 616                         } else {
 617                                 $difftext = $this->messages['diff'];
 618                         }
 619                         $histlink = $linkRenderer->makeKnownLink(
 620                                 $page,
 621                                 new HtmlArmor( $this->messages['hist'] ),
 622                                 [ 'class' => 'mw-changeslist-history' ],
 623                                 [ 'action' => 'history' ]
 624                         );
 625
 626                         if ( $row->rev_parent_id === null ) {
 627                                 // For some reason rev_parent_id isn't populated for this row.
 628                                 // Its rumoured this is true on wikipedia for some revisions (T36922).
 629                                 // Next best thing is to have the total number of bytes.
 630                                 $chardiff = ' <span class="mw-changeslist-separator"></span> ';
 631                                 $chardiff .= Linker::formatRevisionSize( $row->rev_len );
 632                                 $chardiff .= ' <span class="mw-changeslist-separator"></span> ';
 633                         } else {
 634                                 $parentLen = 0;
 635                                 if ( isset( $this->mParentLens[$row->rev_parent_id] ) ) {
 636                                         $parentLen = $this->mParentLens[$row->rev_parent_id];
 637                                 }
 638
 639                                 $chardiff = ' <span class="mw-changeslist-separator"></span> ';
 640                                 $chardiff .= ChangesList::showCharacterDifference(
 641                                         $parentLen,
 642                                         $row->rev_len,
 643                                         $this->getContext()
 644                                 );
 645                                 $chardiff .= ' <span class="mw-changeslist-separator"></span> ';
 646                         }
 647
 648                         $lang = $this->getLanguage();
 649                         $comment = $lang->getDirMark() . Linker::revComment( $rev, false, true, false );
 650                         $d = ChangesList::revDateLink( $rev, $user, $lang, $page );
 651
 652                         # Show user names for /newbies as there may be different users.
 653                         # Note that only unprivileged users have rows with hidden user names excluded.
 654                         # When querying for an IP range, we want to always show user and user talk links.
 655                         $userlink = '';
 656                         if ( ( $this->contribs == 'newbie' && !$rev->isDeleted( Revision::DELETED_USER ) )
 657                                 || $this->isQueryableRange( $this->target ) ) {
 658                                 $userlink = ' <span class="mw-changeslist-separator"></span> '
 659                                         . $lang->getDirMark()
 660                                         . Linker::userLink( $rev->getUser(), $rev->getUserText() );
 661                                 $userlink .= ' ' . $this->msg( 'parentheses' )->rawParams(
 662                                         Linker::userTalkLink( $rev->getUser(), $rev->getUserText() ) )->escaped() . ' ';
 663                         }
 664
 665                         $flags = [];
 666                         if ( $rev->getParentId() === 0 ) {
 667                                 $flags[] = ChangesList::flag( 'newpage' );
 668                         }
 669
 670                         if ( $rev->isMinor() ) {
 671                                 $flags[] = ChangesList::flag( 'minor' );
 672                         }
 673
 674                         $del = Linker::getRevDeleteLink( $user, $rev, $page );
 675                         if ( $del !== '' ) {
 676                                 $del .= ' ';
 677                         }
 678
 679                         // While it might be tempting to use a list here
 680                         // this would result in clutter and slows down navigating the content
 681                         // in assistive technology.
 682                         // See https://phabricator.wikimedia.org/T205581#4734812
 683                         $diffHistLinks = Html::rawElement( 'span',
 684                                 [ 'class' => 'mw-changeslist-links' ],
 685                                 // The spans are needed to ensure the dividing '|' elements are not
 686                                 // themselves styled as links.
 687                                 Html::rawElement( 'span', [], $difftext ) .
 688                                 ' ' . // Space needed for separating two words.
 689                                 Html::rawElement( 'span', [], $histlink )
 690                         );
 691
 692                         # Tags, if any.
 693                         list( $tagSummary, $newClasses ) = ChangeTags::formatSummaryRow(
 694                                 $row->ts_tags,
 695                                 'contributions',
 696                                 $this->getContext()
 697                         );
 698                         $classes = array_merge( $classes, $newClasses );
 699
 700                         Hooks::run( 'SpecialContributions::formatRow::flags', [ $this->getContext(), $row, &$flags ] );
 701
 702                         $templateParams = [
 703                                 'del' => $del,
 704                                 'timestamp' => $d,
 705                                 'diffHistLinks' => $diffHistLinks,
 706                                 'charDifference' => $chardiff,
 707                                 'flags' => $flags,
 708                                 'articleLink' => $link,
 709                                 'userlink' => $userlink,
 710                                 'logText' => $comment,
 711                                 'topmarktext' => $topmarktext,
 712                                 'tagSummary' => $tagSummary,
 713                         ];
 714
 715                         # Denote if username is redacted for this edit
 716                         if ( $rev->isDeleted( Revision::DELETED_USER ) ) {
 717                                 $templateParams['rev-deleted-user-contribs'] =
 718                                         $this->msg( 'rev-deleted-user-contribs' )->escaped();
 719                         }
 720
 721                         $ret = $this->templateParser->processTemplate(
 722                                 'SpecialContributionsLine',
 723                                 $templateParams
 724                         );
 725                 }
 726
 727                 // Let extensions add data
 728                 Hooks::run( 'ContributionsLineEnding', [ $this, &$ret, $row, &$classes, &$attribs ] );
 729                 $attribs = array_filter( $attribs,
 730                         [ Sanitizer::class, 'isReservedDataAttribute' ],
 731                         ARRAY_FILTER_USE_KEY
 732                 );
 733
 734                 // TODO: Handle exceptions in the catch block above.  Do any extensions rely on
 735                 // receiving empty rows?
 736
 737                 if ( $classes === [] && $attribs === [] && $ret === '' ) {
 738                         wfDebug( "Dropping Special:Contribution row that could not be formatted\n" );
 739                         return "<!-- Could not format Special:Contribution row. -->\n";
 740                 }
 741                 $attribs['class'] = $classes;
 742
 743                 // FIXME: The signature of the ContributionsLineEnding hook makes it
 744                 // very awkward to move this LI wrapper into the template.
 745                 return Html::rawElement( 'li', $attribs, $ret ) . "\n";
 746         }
 747
 748         /**
 749          * Overwrite Pager function and return a helpful comment
 750          * @return string
 751          */
 752         function getSqlComment() {
 753                 if ( $this->namespace || $this->deletedOnly ) {
 754                         // potentially slow, see CR r58153
 755                         return 'contributions page filtered for namespace or RevisionDeleted edits';
 756                 } else {
 757                         return 'contributions page unfiltered';
 758                 }
 759         }
 760
 761         protected function preventClickjacking() {
 762                 $this->preventClickjacking = true;
 763         }
 764
 765         /**
 766          * @return bool
 767          */
 768         public function getPreventClickjacking() {
 769                 return $this->preventClickjacking;
 770         }
 771
 772         /**
 773          * Set up date filter options, given request data.
 774          *
 775          * @param array $opts Options array
 776          * @return array Options array with processed start and end date filter options
 777          */
 778         public static function processDateFilter( array $opts ) {
 779                 $start = $opts['start'] ?? '';
 780                 $end = $opts['end'] ?? '';
 781                 $year = $opts['year'] ?? '';
 782                 $month = $opts['month'] ?? '';
 783
 784                 if ( $start !== '' && $end !== '' && $start > $end ) {
 785                         $temp = $start;
 786                         $start = $end;
 787                         $end = $temp;
 788                 }
 789
 790                 // If year/month legacy filtering options are set, convert them to display the new stamp
 791                 if ( $year !== '' || $month !== '' ) {
 792                         // Reuse getDateCond logic, but subtract a day because
 793                         // the endpoints of our date range appear inclusive
 794                         // but the internal end offsets are always exclusive
 795                         $legacyTimestamp = ReverseChronologicalPager::getOffsetDate( $year, $month );
 796                         $legacyDateTime = new DateTime( $legacyTimestamp->getTimestamp( TS_ISO_8601 ) );
 797                         $legacyDateTime = $legacyDateTime->modify( '-1 day' );
 798
 799                         // Clear the new timestamp range options if used and
 800                         // replace with the converted legacy timestamp
 801                         $start = '';
 802                         $end = $legacyDateTime->format( 'Y-m-d' );
 803                 }
 804
 805                 $opts['start'] = $start;
 806                 $opts['end'] = $end;
 807
 808                 return $opts;
 809         }
 810 }