includes/specials/pagers/ContribsPager.php

   1 <?php
   2 /**
   3  * This program is free software; you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License as published by
   5  * the Free Software Foundation; either version 2 of the License, or
   6  * (at your option) any later version.
   7  *
   8  * This program is distributed in the hope that it will be useful,
   9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  11  * GNU General Public License for more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along
  14  * with this program; if not, write to the Free Software Foundation, Inc.,
  15  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  16  * http://www.gnu.org/copyleft/gpl.html
  17  *
  18  * @file
  19  * @ingroup Pager
  20  */
  21
  22 /**
  23  * Pager for Special:Contributions
  24  * @ingroup Pager
  25  */
  26 use MediaWiki\MediaWikiServices;
  27 use Wikimedia\Rdbms\IResultWrapper;
  28 use Wikimedia\Rdbms\FakeResultWrapper;
  29 use Wikimedia\Rdbms\IDatabase;
  30
  31 class ContribsPager extends RangeChronologicalPager {
  32
  33         public $mDefaultDirection = IndexPager::DIR_DESCENDING;
  34
  35         /**
  36          * @var string[] Local cache for escaped messages
  37          */
  38         public $messages;
  39
  40         /**
  41          * @var string User name, or a string describing an IP address range
  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          */
  49         private $contribs;
  50
  51         /**
  52          * @var string|int A single namespace number, or an empty string for all namespaces
  53          */
  54         public $namespace = '';
  55
  56         /**
  57          * @var string|false Name of tag to filter, or false to ignore tags
  58          */
  59         private $tagFilter;
  60
  61         /**
  62          * @var bool Set to true to invert the namespace selection
  63          */
  64         private $nsInvert;
  65
  66         /**
  67          * @var bool Set to true to show both the subject and talk namespace, no matter which got
  68          *  selected
  69          */
  70         private $associated;
  71
  72         /**
  73          * @var bool Set to true to show only deleted revisions
  74          */
  75         private $deletedOnly;
  76
  77         /**
  78          * @var bool Set to true to show only latest (a.k.a. current) revisions
  79          */
  80         private $topOnly;
  81
  82         /**
  83          * @var bool Set to true to show only new pages
  84          */
  85         private $newOnly;
  86
  87         /**
  88          * @var bool Set to true to hide edits marked as minor by the user
  89          */
  90         private $hideMinor;
  91
  92         public $mDb;
  93         public $preventClickjacking = false;
  94
  95         /** @var IDatabase */
  96         public $mDbSecondary;
  97
  98         /**
  99          * @var array
 100          */
 101         protected $mParentLens;
 102
 103         /**
 104          * @var TemplateParser
 105          */
 106         protected $templateParser;
 107
 108         function __construct( IContextSource $context, array $options ) {
 109                 parent::__construct( $context );
 110
 111                 $msgs = [
 112                         'diff',
 113                         'hist',
 114                         'pipe-separator',
 115                         'uctop'
 116                 ];
 117
 118                 foreach ( $msgs as $msg ) {
 119                         $this->messages[$msg] = $this->msg( $msg )->escaped();
 120                 }
 121
 122                 $this->target = $options['target'] ?? '';
 123                 $this->contribs = $options['contribs'] ?? 'users';
 124                 $this->namespace = $options['namespace'] ?? '';
 125                 $this->tagFilter = $options['tagfilter'] ?? false;
 126                 $this->nsInvert = $options['nsInvert'] ?? false;
 127                 $this->associated = $options['associated'] ?? false;
 128
 129                 $this->deletedOnly = !empty( $options['deletedOnly'] );
 130                 $this->topOnly = !empty( $options['topOnly'] );
 131                 $this->newOnly = !empty( $options['newOnly'] );
 132                 $this->hideMinor = !empty( $options['hideMinor'] );
 133
 134                 // Date filtering: use timestamp if available
 135                 $startTimestamp = '';
 136                 $endTimestamp = '';
 137                 if ( $options['start'] ) {
 138                         $startTimestamp = $options['start'] . ' 00:00:00';
 139                 }
 140                 if ( $options['end'] ) {
 141                         $endTimestamp = $options['end'] . ' 23:59:59';
 142                 }
 143                 $this->getDateRangeCond( $startTimestamp, $endTimestamp );
 144
 145                 // Most of this code will use the 'contributions' group DB, which can map to replica DBs
 146                 // with extra user based indexes or partioning by user. The additional metadata
 147                 // queries should use a regular replica DB since the lookup pattern is not all by user.
 148                 $this->mDbSecondary = wfGetDB( DB_REPLICA ); // any random replica DB
 149                 $this->mDb = wfGetDB( DB_REPLICA, 'contributions' );
 150                 $this->templateParser = new TemplateParser();
 151         }
 152
 153         function getDefaultQuery() {
 154                 $query = parent::getDefaultQuery();
 155                 $query['target'] = $this->target;
 156
 157                 return $query;
 158         }
 159
 160         /**
 161          * This method basically executes the exact same code as the parent class, though with
 162          * a hook added, to allow extensions to add additional queries.
 163          *
 164          * @param string $offset Index offset, inclusive
 165          * @param int $limit Exact query limit
 166          * @param bool $descending Query direction, false for ascending, true for descending
 167          * @return IResultWrapper
 168          */
 169         function reallyDoQuery( $offset, $limit, $descending ) {
 170                 list( $tables, $fields, $conds, $fname, $options, $join_conds ) = $this->buildQueryInfo(
 171                         $offset,
 172                         $limit,
 173                         $descending
 174                 );
 175
 176                 /*
 177                  * This hook will allow extensions to add in additional queries, so they can get their data
 178                  * in My Contributions as well. Extensions should append their results to the $data array.
 179                  *
 180                  * Extension queries have to implement the navbar requirement as well. They should
 181                  * - have a column aliased as $pager->getIndexField()
 182                  * - have LIMIT set
 183                  * - have a WHERE-clause that compares the $pager->getIndexField()-equivalent column to the offset
 184                  * - have the ORDER BY specified based upon the details provided by the navbar
 185                  *
 186                  * See includes/Pager.php buildQueryInfo() method on how to build LIMIT, WHERE & ORDER BY
 187                  *
 188                  * &$data: an array of results of all contribs queries
 189                  * $pager: the ContribsPager object hooked into
 190                  * $offset: see phpdoc above
 191                  * $limit: see phpdoc above
 192                  * $descending: see phpdoc above
 193                  */
 194                 $data = [ $this->mDb->select(
 195                         $tables, $fields, $conds, $fname, $options, $join_conds
 196                 ) ];
 197                 Hooks::run(
 198                         'ContribsPager::reallyDoQuery',
 199                         [ &$data, $this, $offset, $limit, $descending ]
 200                 );
 201
 202                 $result = [];
 203
 204                 // loop all results and collect them in an array
 205                 foreach ( $data as $query ) {
 206                         foreach ( $query as $i => $row ) {
 207                                 // use index column as key, allowing us to easily sort in PHP
 208                                 $result[$row->{$this->getIndexField()} . "-$i"] = $row;
 209                         }
 210                 }
 211
 212                 // sort results
 213                 if ( $descending ) {
 214                         ksort( $result );
 215                 } else {
 216                         krsort( $result );
 217                 }
 218
 219                 // enforce limit
 220                 $result = array_slice( $result, 0, $limit );
 221
 222                 // get rid of array keys
 223                 $result = array_values( $result );
 224
 225                 return new FakeResultWrapper( $result );
 226         }
 227
 228         function getQueryInfo() {
 229                 $revQuery = Revision::getQueryInfo( [ 'page', 'user' ] );
 230                 $queryInfo = [
 231                         'tables' => $revQuery['tables'],
 232                         'fields' => array_merge( $revQuery['fields'], [ 'page_is_new' ] ),
 233                         'conds' => [],
 234                         'options' => [],
 235                         'join_conds' => $revQuery['joins'],
 236                 ];
 237
 238                 if ( $this->contribs == 'newbie' ) {
 239                         $max = $this->mDb->selectField( 'user', 'max(user_id)', '', __METHOD__ );
 240                         $queryInfo['conds'][] = $revQuery['fields']['rev_user'] . ' >' . (int)( $max - $max / 100 );
 241                         # ignore local groups with the bot right
 242                         # @todo FIXME: Global groups may have 'bot' rights
 243                         $groupsWithBotPermission = User::getGroupsWithPermission( 'bot' );
 244                         if ( count( $groupsWithBotPermission ) ) {
 245                                 $queryInfo['tables'][] = 'user_groups';
 246                                 $queryInfo['conds'][] = 'ug_group IS NULL';
 247                                 $queryInfo['join_conds']['user_groups'] = [
 248                                         'LEFT JOIN', [
 249                                                 'ug_user = ' . $revQuery['fields']['rev_user'],
 250                                                 'ug_group' => $groupsWithBotPermission,
 251                                                 'ug_expiry IS NULL OR ug_expiry >= ' .
 252                                                         $this->mDb->addQuotes( $this->mDb->timestamp() )
 253                                         ]
 254                                 ];
 255                         }
 256                         // (T140537) Disallow looking too far in the past for 'newbies' queries. If the user requested
 257                         // a timestamp offset far in the past such that there are no edits by users with user_ids in
 258                         // the range, we would end up scanning all revisions from that offset until start of time.
 259                         $queryInfo['conds'][] = 'rev_timestamp > ' .
 260                                 $this->mDb->addQuotes( $this->mDb->timestamp( wfTimestamp() - 30 * 24 * 60 * 60 ) );
 261                 } else {
 262                         $user = User::newFromName( $this->target, false );
 263                         $ipRangeConds = $user->isAnon() ? $this->getIpRangeConds( $this->mDb, $this->target ) : null;
 264                         if ( $ipRangeConds ) {
 265                                 $queryInfo['tables'][] = 'ip_changes';
 266                                 /**
 267                                  * These aliases make `ORDER BY rev_timestamp, rev_id` from {@see getIndexField} and
 268                                  * {@see getExtraSortFields} use the replicated `ipc_rev_timestamp` and `ipc_rev_id`
 269                                  * columns from the `ip_changes` table, for more efficient queries.
 270                                  * @see https://phabricator.wikimedia.org/T200259#4832318
 271                                  */
 272                                 $queryInfo['fields'] = array_merge(
 273                                         [
 274                                                 'rev_timestamp' => 'ipc_rev_timestamp',
 275                                                 'rev_id' => 'ipc_rev_id',
 276                                         ],
 277                                         array_diff( $queryInfo['fields'], [
 278                                                 'rev_timestamp',
 279                                                 'rev_id',
 280                                         ] )
 281                                 );
 282                                 $queryInfo['join_conds']['ip_changes'] = [
 283                                         'LEFT JOIN', [ 'ipc_rev_id = rev_id' ]
 284                                 ];
 285                                 $queryInfo['conds'][] = $ipRangeConds;
 286                         } else {
 287                                 // tables and joins are already handled by Revision::getQueryInfo()
 288                                 $conds = ActorMigration::newMigration()->getWhere( $this->mDb, 'rev_user', $user );
 289                                 $queryInfo['conds'][] = $conds['conds'];
 290                                 // Force the appropriate index to avoid bad query plans (T189026)
 291                                 if ( isset( $conds['orconds']['actor'] ) ) {
 292                                         // @todo: This will need changing when revision_comment_temp goes away
 293                                         $queryInfo['options']['USE INDEX']['temp_rev_user'] = 'actor_timestamp';
 294                                         // Alias 'rev_timestamp' => 'revactor_timestamp' so "ORDER BY rev_timestamp" is interpreted to
 295                                         // use revactor_timestamp instead.
 296                                         $queryInfo['fields'] = array_merge(
 297                                                 array_diff( $queryInfo['fields'], [ 'rev_timestamp' ] ),
 298                                                 [ 'rev_timestamp' => 'revactor_timestamp' ]
 299                                         );
 300                                 } else {
 301                                         $queryInfo['options']['USE INDEX']['revision'] =
 302                                                 isset( $conds['orconds']['userid'] ) ? 'user_timestamp' : 'usertext_timestamp';
 303                                 }
 304                         }
 305                 }
 306
 307                 if ( $this->deletedOnly ) {
 308                         $queryInfo['conds'][] = 'rev_deleted != 0';
 309                 }
 310
 311                 if ( $this->topOnly ) {
 312                         $queryInfo['conds'][] = 'rev_id = page_latest';
 313                 }
 314
 315                 if ( $this->newOnly ) {
 316                         $queryInfo['conds'][] = 'rev_parent_id = 0';
 317                 }
 318
 319                 if ( $this->hideMinor ) {
 320                         $queryInfo['conds'][] = 'rev_minor_edit = 0';
 321                 }
 322
 323                 $user = $this->getUser();
 324                 $queryInfo['conds'] = array_merge( $queryInfo['conds'], $this->getNamespaceCond() );
 325
 326                 // Paranoia: avoid brute force searches (T19342)
 327                 if ( !$user->isAllowed( 'deletedhistory' ) ) {
 328                         $queryInfo['conds'][] = $this->mDb->bitAnd( 'rev_deleted', Revision::DELETED_USER ) . ' = 0';
 329                 } elseif ( !$user->isAllowedAny( 'suppressrevision', 'viewsuppressed' ) ) {
 330                         $queryInfo['conds'][] = $this->mDb->bitAnd( 'rev_deleted', Revision::SUPPRESSED_USER ) .
 331                                 ' != ' . Revision::SUPPRESSED_USER;
 332                 }
 333
 334                 // For IPv6, we use ipc_rev_timestamp on ip_changes as the index field,
 335                 // which will be referenced when parsing the results of a query.
 336                 if ( self::isQueryableRange( $this->target ) ) {
 337                         $queryInfo['fields'][] = 'ipc_rev_timestamp';
 338                 }
 339
 340                 ChangeTags::modifyDisplayQuery(
 341                         $queryInfo['tables'],
 342                         $queryInfo['fields'],
 343                         $queryInfo['conds'],
 344                         $queryInfo['join_conds'],
 345                         $queryInfo['options'],
 346                         $this->tagFilter
 347                 );
 348
 349                 // Avoid PHP 7.1 warning from passing $this by reference
 350                 $pager = $this;
 351                 Hooks::run( 'ContribsPager::getQueryInfo', [ &$pager, &$queryInfo ] );
 352
 353                 return $queryInfo;
 354         }
 355
 356         function getNamespaceCond() {
 357                 if ( $this->namespace !== '' ) {
 358                         $selectedNS = $this->mDb->addQuotes( $this->namespace );
 359                         $eq_op = $this->nsInvert ? '!=' : '=';
 360                         $bool_op = $this->nsInvert ? 'AND' : 'OR';
 361
 362                         if ( !$this->associated ) {
 363                                 return [ "page_namespace $eq_op $selectedNS" ];
 364                         }
 365
 366                         $associatedNS = $this->mDb->addQuotes(
 367                                 MWNamespace::getAssociated( $this->namespace )
 368                         );
 369
 370                         return [
 371                                 "page_namespace $eq_op $selectedNS " .
 372                                 $bool_op .
 373                                 " page_namespace $eq_op $associatedNS"
 374                         ];
 375                 }
 376
 377                 return [];
 378         }
 379
 380         /**
 381          * Get SQL conditions for an IP range, if applicable
 382          * @param IDatabase      $db
 383          * @param string         $ip The IP address or CIDR
 384          * @return string|false  SQL for valid IP ranges, false if invalid
 385          */
 386         private function getIpRangeConds( $db, $ip ) {
 387                 // First make sure it is a valid range and they are not outside the CIDR limit
 388                 if ( !$this->isQueryableRange( $ip ) ) {
 389                         return false;
 390                 }
 391
 392                 list( $start, $end ) = IP::parseRange( $ip );
 393
 394                 return 'ipc_hex BETWEEN ' . $db->addQuotes( $start ) . ' AND ' . $db->addQuotes( $end );
 395         }
 396
 397         /**
 398          * Is the given IP a range and within the CIDR limit?
 399          *
 400          * @param string $ipRange
 401          * @return bool True if it is valid
 402          * @since 1.30
 403          */
 404         public function isQueryableRange( $ipRange ) {
 405                 $limits = $this->getConfig()->get( 'RangeContributionsCIDRLimit' );
 406
 407                 $bits = IP::parseCIDR( $ipRange )[1];
 408                 if (
 409                         ( $bits === false ) ||
 410                         ( IP::isIPv4( $ipRange ) && $bits < $limits['IPv4'] ) ||
 411                         ( IP::isIPv6( $ipRange ) && $bits < $limits['IPv6'] )
 412                 ) {
 413                         return false;
 414                 }
 415
 416                 return true;
 417         }
 418
 419         /**
 420          * @return string
 421          */
 422         public function getIndexField() {
 423                 // Note this is run via parent::__construct() *before* $this->target is set!
 424                 return 'rev_timestamp';
 425         }
 426
 427         /**
 428          * @return string[]
 429          */
 430         protected function getExtraSortFields() {
 431                 // Note this is run via parent::__construct() *before* $this->target is set!
 432                 return [ 'rev_id' ];
 433         }
 434
 435         function doBatchLookups() {
 436                 # Do a link batch query
 437                 $this->mResult->seek( 0 );
 438                 $parentRevIds = [];
 439                 $this->mParentLens = [];
 440                 $batch = new LinkBatch();
 441                 $isIpRange = $this->isQueryableRange( $this->target );
 442                 # Give some pointers to make (last) links
 443                 foreach ( $this->mResult as $row ) {
 444                         if ( isset( $row->rev_parent_id ) && $row->rev_parent_id ) {
 445                                 $parentRevIds[] = $row->rev_parent_id;
 446                         }
 447                         if ( isset( $row->rev_id ) ) {
 448                                 $this->mParentLens[$row->rev_id] = $row->rev_len;
 449                                 if ( $this->contribs === 'newbie' ) { // multiple users
 450                                         $batch->add( NS_USER, $row->user_name );
 451                                         $batch->add( NS_USER_TALK, $row->user_name );
 452                                 } elseif ( $isIpRange ) {
 453                                         // If this is an IP range, batch the IP's talk page
 454                                         $batch->add( NS_USER_TALK, $row->rev_user_text );
 455                                 }
 456                                 $batch->add( $row->page_namespace, $row->page_title );
 457                         }
 458                 }
 459                 # Fetch rev_len for revisions not already scanned above
 460                 $this->mParentLens += Revision::getParentLengths(
 461                         $this->mDbSecondary,
 462                         array_diff( $parentRevIds, array_keys( $this->mParentLens ) )
 463                 );
 464                 $batch->execute();
 465                 $this->mResult->seek( 0 );
 466         }
 467
 468         /**
 469          * @return string
 470          */
 471         function getStartBody() {
 472                 return "<ul class=\"mw-contributions-list\">\n";
 473         }
 474
 475         /**
 476          * @return string
 477          */
 478         function getEndBody() {
 479                 return "</ul>\n";
 480         }
 481
 482         /**
 483          * Check whether the revision associated is valid for formatting. If has no associated revision
 484          * id then null is returned.
 485          *
 486          * @param object $row
 487          * @param Title|null $title
 488          * @return Revision|null
 489          */
 490         public function tryToCreateValidRevision( $row, $title = null ) {
 491                 /*
 492                  * There may be more than just revision rows. To make sure that we'll only be processing
 493                  * revisions here, let's _try_ to build a revision out of our row (without displaying
 494                  * notices though) and then trying to grab data from the built object. If we succeed,
 495                  * we're definitely dealing with revision data and we may proceed, if not, we'll leave it
 496                  * to extensions to subscribe to the hook to parse the row.
 497                  */
 498                 Wikimedia\suppressWarnings();
 499                 try {
 500                         $rev = new Revision( $row, 0, $title );
 501                         $validRevision = (bool)$rev->getId();
 502                 } catch ( Exception $e ) {
 503                         $validRevision = false;
 504                 }
 505                 Wikimedia\restoreWarnings();
 506                 return $validRevision ? $rev : null;
 507         }
 508
 509         /**
 510          * Generates each row in the contributions list.
 511          *
 512          * Contributions which are marked "top" are currently on top of the history.
 513          * For these contributions, a [rollback] link is shown for users with roll-
 514          * back privileges. The rollback link restores the most recent version that
 515          * was not written by the target user.
 516          *
 517          * @todo This would probably look a lot nicer in a table.
 518          * @param object $row
 519          * @return string
 520          */
 521         function formatRow( $row ) {
 522                 $ret = '';
 523                 $classes = [];
 524                 $attribs = [];
 525
 526                 $linkRenderer = MediaWikiServices::getInstance()->getLinkRenderer();
 527
 528                 $page = null;
 529                 // Create a title for the revision if possible
 530                 // Rows from the hook may not include title information
 531                 if ( isset( $row->page_namespace ) && isset( $row->page_title ) ) {
 532                         $page = Title::newFromRow( $row );
 533                 }
 534                 $rev = $this->tryToCreateValidRevision( $row, $page );
 535                 if ( $rev ) {
 536                         $attribs['data-mw-revid'] = $rev->getId();
 537
 538                         $link = $linkRenderer->makeLink(
 539                                 $page,
 540                                 $page->getPrefixedText(),
 541                                 [ 'class' => 'mw-contributions-title' ],
 542                                 $page->isRedirect() ? [ 'redirect' => 'no' ] : []
 543                         );
 544                         # Mark current revisions
 545                         $topmarktext = '';
 546                         $user = $this->getUser();
 547
 548                         if ( $row->rev_id === $row->page_latest ) {
 549                                 $topmarktext .= '<span class="mw-uctop">' . $this->messages['uctop'] . '</span>';
 550                                 $classes[] = 'mw-contributions-current';
 551                                 # Add rollback link
 552                                 if ( !$row->page_is_new && $page->quickUserCan( 'rollback', $user )
 553                                         && $page->quickUserCan( 'edit', $user )
 554                                 ) {
 555                                         $this->preventClickjacking();
 556                                         $topmarktext .= ' ' . Linker::generateRollback( $rev, $this->getContext() );
 557                                 }
 558                         }
 559                         # Is there a visible previous revision?
 560                         if ( $rev->userCan( Revision::DELETED_TEXT, $user ) && $rev->getParentId() !== 0 ) {
 561                                 $difftext = $linkRenderer->makeKnownLink(
 562                                         $page,
 563                                         new HtmlArmor( $this->messages['diff'] ),
 564                                         [ 'class' => 'mw-changeslist-diff' ],
 565                                         [
 566                                                 'diff' => 'prev',
 567                                                 'oldid' => $row->rev_id
 568                                         ]
 569                                 );
 570                         } else {
 571                                 $difftext = $this->messages['diff'];
 572                         }
 573                         $histlink = $linkRenderer->makeKnownLink(
 574                                 $page,
 575                                 new HtmlArmor( $this->messages['hist'] ),
 576                                 [ 'class' => 'mw-changeslist-history' ],
 577                                 [ 'action' => 'history' ]
 578                         );
 579
 580                         if ( $row->rev_parent_id === null ) {
 581                                 // For some reason rev_parent_id isn't populated for this row.
 582                                 // Its rumoured this is true on wikipedia for some revisions (T36922).
 583                                 // Next best thing is to have the total number of bytes.
 584                                 $chardiff = ' <span class="mw-changeslist-separator"></span> ';
 585                                 $chardiff .= Linker::formatRevisionSize( $row->rev_len );
 586                                 $chardiff .= ' <span class="mw-changeslist-separator"></span> ';
 587                         } else {
 588                                 $parentLen = 0;
 589                                 if ( isset( $this->mParentLens[$row->rev_parent_id] ) ) {
 590                                         $parentLen = $this->mParentLens[$row->rev_parent_id];
 591                                 }
 592
 593                                 $chardiff = ' <span class="mw-changeslist-separator"></span> ';
 594                                 $chardiff .= ChangesList::showCharacterDifference(
 595                                         $parentLen,
 596                                         $row->rev_len,
 597                                         $this->getContext()
 598                                 );
 599                                 $chardiff .= ' <span class="mw-changeslist-separator"></span> ';
 600                         }
 601
 602                         $lang = $this->getLanguage();
 603                         $comment = $lang->getDirMark() . Linker::revComment( $rev, false, true, false );
 604                         $date = $lang->userTimeAndDate( $row->rev_timestamp, $user );
 605                         if ( $rev->userCan( Revision::DELETED_TEXT, $user ) ) {
 606                                 $d = $linkRenderer->makeKnownLink(
 607                                         $page,
 608                                         $date,
 609                                         [ 'class' => 'mw-changeslist-date' ],
 610                                         [ 'oldid' => intval( $row->rev_id ) ]
 611                                 );
 612                         } else {
 613                                 $d = htmlspecialchars( $date );
 614                         }
 615                         if ( $rev->isDeleted( Revision::DELETED_TEXT ) ) {
 616                                 $d = '<span class="history-deleted">' . $d . '</span>';
 617                         }
 618
 619                         # Show user names for /newbies as there may be different users.
 620                         # Note that only unprivileged users have rows with hidden user names excluded.
 621                         # When querying for an IP range, we want to always show user and user talk links.
 622                         $userlink = '';
 623                         if ( ( $this->contribs == 'newbie' && !$rev->isDeleted( Revision::DELETED_USER ) )
 624                                 || $this->isQueryableRange( $this->target ) ) {
 625                                 $userlink = ' <span class="mw-changeslist-separator"></span> '
 626                                         . $lang->getDirMark()
 627                                         . Linker::userLink( $rev->getUser(), $rev->getUserText() );
 628                                 $userlink .= ' ' . $this->msg( 'parentheses' )->rawParams(
 629                                         Linker::userTalkLink( $rev->getUser(), $rev->getUserText() ) )->escaped() . ' ';
 630                         }
 631
 632                         $flags = [];
 633                         if ( $rev->getParentId() === 0 ) {
 634                                 $flags[] = ChangesList::flag( 'newpage' );
 635                         }
 636
 637                         if ( $rev->isMinor() ) {
 638                                 $flags[] = ChangesList::flag( 'minor' );
 639                         }
 640
 641                         $del = Linker::getRevDeleteLink( $user, $rev, $page );
 642                         if ( $del !== '' ) {
 643                                 $del .= ' ';
 644                         }
 645
 646                         // While it might be tempting to use a list here
 647                         // this would result in clutter and slows down navigating the content
 648                         // in assistive technology.
 649                         // See https://phabricator.wikimedia.org/T205581#4734812
 650                         $diffHistLinks = Html::rawElement( 'span',
 651                                 [ 'class' => 'mw-changeslist-links' ],
 652                                 // The spans are needed to ensure the dividing '|' elements are not
 653                                 // themselves styled as links.
 654                                 Html::rawElement( 'span', [], $difftext ) .
 655                                 ' ' . // Space needed for separating two words.
 656                                 Html::rawElement( 'span', [], $histlink )
 657                         );
 658
 659                         # Tags, if any.
 660                         list( $tagSummary, $newClasses ) = ChangeTags::formatSummaryRow(
 661                                 $row->ts_tags,
 662                                 'contributions',
 663                                 $this->getContext()
 664                         );
 665                         $classes = array_merge( $classes, $newClasses );
 666
 667                         Hooks::run( 'SpecialContributions::formatRow::flags', [ $this->getContext(), $row, &$flags ] );
 668
 669                         $templateParams = [
 670                                 'del' => $del,
 671                                 'timestamp' => $d,
 672                                 'diffHistLinks' => $diffHistLinks,
 673                                 'charDifference' => $chardiff,
 674                                 'flags' => $flags,
 675                                 'articleLink' => $link,
 676                                 'userlink' => $userlink,
 677                                 'logText' => $comment,
 678                                 'topmarktext' => $topmarktext,
 679                                 'tagSummary' => $tagSummary,
 680                         ];
 681
 682                         # Denote if username is redacted for this edit
 683                         if ( $rev->isDeleted( Revision::DELETED_USER ) ) {
 684                                 $templateParams['rev-deleted-user-contribs'] =
 685                                         $this->msg( 'rev-deleted-user-contribs' )->escaped();
 686                         }
 687
 688                         $ret = $this->templateParser->processTemplate(
 689                                 'SpecialContributionsLine',
 690                                 $templateParams
 691                         );
 692                 }
 693
 694                 // Let extensions add data
 695                 Hooks::run( 'ContributionsLineEnding', [ $this, &$ret, $row, &$classes, &$attribs ] );
 696                 $attribs = array_filter( $attribs,
 697                         [ Sanitizer::class, 'isReservedDataAttribute' ],
 698                         ARRAY_FILTER_USE_KEY
 699                 );
 700
 701                 // TODO: Handle exceptions in the catch block above.  Do any extensions rely on
 702                 // receiving empty rows?
 703
 704                 if ( $classes === [] && $attribs === [] && $ret === '' ) {
 705                         wfDebug( "Dropping Special:Contribution row that could not be formatted\n" );
 706                         return "<!-- Could not format Special:Contribution row. -->\n";
 707                 }
 708                 $attribs['class'] = $classes;
 709
 710                 // FIXME: The signature of the ContributionsLineEnding hook makes it
 711                 // very awkward to move this LI wrapper into the template.
 712                 return Html::rawElement( 'li', $attribs, $ret ) . "\n";
 713         }
 714
 715         /**
 716          * Overwrite Pager function and return a helpful comment
 717          * @return string
 718          */
 719         function getSqlComment() {
 720                 if ( $this->namespace || $this->deletedOnly ) {
 721                         // potentially slow, see CR r58153
 722                         return 'contributions page filtered for namespace or RevisionDeleted edits';
 723                 } else {
 724                         return 'contributions page unfiltered';
 725                 }
 726         }
 727
 728         protected function preventClickjacking() {
 729                 $this->preventClickjacking = true;
 730         }
 731
 732         /**
 733          * @return bool
 734          */
 735         public function getPreventClickjacking() {
 736                 return $this->preventClickjacking;
 737         }
 738
 739         /**
 740          * Set up date filter options, given request data.
 741          *
 742          * @param array $opts Options array
 743          * @return array Options array with processed start and end date filter options
 744          */
 745         public static function processDateFilter( array $opts ) {
 746                 $start = $opts['start'] ?? '';
 747                 $end = $opts['end'] ?? '';
 748                 $year = $opts['year'] ?? '';
 749                 $month = $opts['month'] ?? '';
 750
 751                 if ( $start !== '' && $end !== '' && $start > $end ) {
 752                         $temp = $start;
 753                         $start = $end;
 754                         $end = $temp;
 755                 }
 756
 757                 // If year/month legacy filtering options are set, convert them to display the new stamp
 758                 if ( $year !== '' || $month !== '' ) {
 759                         // Reuse getDateCond logic, but subtract a day because
 760                         // the endpoints of our date range appear inclusive
 761                         // but the internal end offsets are always exclusive
 762                         $legacyTimestamp = ReverseChronologicalPager::getOffsetDate( $year, $month );
 763                         $legacyDateTime = new DateTime( $legacyTimestamp->getTimestamp( TS_ISO_8601 ) );
 764                         $legacyDateTime = $legacyDateTime->modify( '-1 day' );
 765
 766                         // Clear the new timestamp range options if used and
 767                         // replace with the converted legacy timestamp
 768                         $start = '';
 769                         $end = $legacyDateTime->format( 'Y-m-d' );
 770                 }
 771
 772                 $opts['start'] = $start;
 773                 $opts['end'] = $end;
 774
 775                 return $opts;
 776         }
 777 }