includes/logging/LogEventsList.php

   1 <?php
   2 /**
   3  * Contain classes to list log entries
   4  *
   5  * Copyright © 2004 Brion Vibber <brion@pobox.com>
   6  * https://www.mediawiki.org/
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; if not, write to the Free Software Foundation, Inc.,
  20  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  21  * http://www.gnu.org/copyleft/gpl.html
  22  *
  23  * @file
  24  */
  25
  26 use MediaWiki\Linker\LinkRenderer;
  27 use MediaWiki\MediaWikiServices;
  28 use Wikimedia\Rdbms\IDatabase;
  29
  30 class LogEventsList extends ContextSource {
  31         const NO_ACTION_LINK = 1;
  32         const NO_EXTRA_USER_LINKS = 2;
  33         const USE_CHECKBOXES = 4;
  34
  35         public $flags;
  36
  37         /**
  38          * @var array
  39          */
  40         protected $mDefaultQuery;
  41
  42         /**
  43          * @var bool
  44          */
  45         protected $showTagEditUI;
  46
  47         /**
  48          * @var array
  49          */
  50         protected $allowedActions = null;
  51
  52         /**
  53          * @var LinkRenderer|null
  54          */
  55         private $linkRenderer;
  56
  57         /**
  58          * The first two parameters used to be $skin and $out, but now only a context
  59          * is needed, that's why there's a second unused parameter.
  60          *
  61          * @param IContextSource|Skin $context Context to use; formerly it was
  62          *   a Skin object. Use of Skin is deprecated.
  63          * @param LinkRenderer|null $linkRenderer previously unused
  64          * @param int $flags Can be a combination of self::NO_ACTION_LINK,
  65          *   self::NO_EXTRA_USER_LINKS or self::USE_CHECKBOXES.
  66          */
  67         public function __construct( $context, $linkRenderer = null, $flags = 0 ) {
  68                 if ( $context instanceof IContextSource ) {
  69                         $this->setContext( $context );
  70                 } else {
  71                         // Old parameters, $context should be a Skin object
  72                         $this->setContext( $context->getContext() );
  73                 }
  74
  75                 $this->flags = $flags;
  76                 $this->showTagEditUI = ChangeTags::showTagEditingUI( $this->getUser() );
  77                 if ( $linkRenderer instanceof LinkRenderer ) {
  78                         $this->linkRenderer = $linkRenderer;
  79                 }
  80         }
  81
  82         /**
  83          * @since 1.30
  84          * @return LinkRenderer
  85          */
  86         protected function getLinkRenderer() {
  87                 if ( $this->linkRenderer !== null ) {
  88                         return $this->linkRenderer;
  89                 } else {
  90                         return MediaWikiServices::getInstance()->getLinkRenderer();
  91                 }
  92         }
  93
  94         /**
  95          * Show options for the log list
  96          *
  97          * @param array|string $types
  98          * @param string $user
  99          * @param string $page
 100          * @param bool $pattern
 101          * @param int|string $year Use 0 to start with no year preselected.
 102          * @param int|string $month A month in the 1..12 range. Use 0 to start with no month
 103          *  preselected.
 104          * @param int|string $day A day in the 1..31 range. Use 0 to start with no month
 105          *  preselected.
 106          * @param array|null $filter
 107          * @param string $tagFilter Tag to select by default
 108          * @param string|null $action
 109          */
 110         public function showOptions( $types = [], $user = '', $page = '', $pattern = false, $year = 0,
 111                 $month = 0, $day = 0, $filter = null, $tagFilter = '', $action = null
 112         ) {
 113                 // For B/C, we take strings, but make sure they are converted...
 114                 $types = ( $types === '' ) ? [] : (array)$types;
 115
 116                 $formDescriptor = [];
 117
 118                 // Basic selectors
 119                 $formDescriptor['type'] = $this->getTypeMenuDesc( $types );
 120                 $formDescriptor['user'] = $this->getUserInputDesc( $user );
 121                 $formDescriptor['page'] = $this->getTitleInputDesc( $page );
 122
 123                 // Add extra inputs if any
 124                 // This could either be a form descriptor array or a string with raw HTML.
 125                 // We need it to work in both cases and show a deprecation warning if it
 126                 // is a string. See T199495.
 127                 $extraInputsDescriptor = $this->getExtraInputsDesc( $types );
 128                 if (
 129                         is_array( $extraInputsDescriptor ) &&
 130                         !empty( $extraInputsDescriptor )
 131                 ) {
 132                         $formDescriptor[ 'extra' ] = $extraInputsDescriptor;
 133                 } elseif ( is_string( $extraInputsDescriptor ) ) {
 134                         // We'll add this to the footer of the form later
 135                         $extraInputsString = $extraInputsDescriptor;
 136                         wfDeprecated( 'Using $input in LogEventsListGetExtraInputs hook', '1.32' );
 137                 }
 138
 139                 // Title pattern, if allowed
 140                 if ( !$this->getConfig()->get( 'MiserMode' ) ) {
 141                         $formDescriptor['pattern'] = $this->getTitlePatternDesc( $pattern );
 142                 }
 143
 144                 // Date menu
 145                 $formDescriptor['date'] = [
 146                         'type' => 'date',
 147                         'label-message' => 'date'
 148                 ];
 149
 150                 // Tag filter
 151                 $formDescriptor['tagfilter'] = [
 152                         'type' => 'tagfilter',
 153                         'name' => 'tagfilter',
 154                         'label-raw' => $this->msg( 'tag-filter' )->parse(),
 155                 ];
 156
 157                 // Filter links
 158                 if ( $filter ) {
 159                         $formDescriptor['filters'] = $this->getFiltersDesc( $filter );
 160                 }
 161
 162                 // Action filter
 163                 if (
 164                         $action !== null &&
 165                         $this->allowedActions !== null &&
 166                         count( $this->allowedActions ) > 0
 167                 ) {
 168                         $formDescriptor['subtype'] = $this->getActionSelectorDesc( $types, $action );
 169                 }
 170
 171                 $context = new DerivativeContext( $this->getContext() );
 172                 $context->setTitle( SpecialPage::getTitleFor( 'Log' ) ); // Remove subpage
 173                 $htmlForm = new HTMLForm( $formDescriptor, $context );
 174                 $htmlForm
 175                         ->setSubmitText( $this->msg( 'logeventslist-submit' )->text() )
 176                         ->setMethod( 'get' )
 177                         ->setWrapperLegendMsg( 'log' );
 178
 179                 // TODO This will should be removed at some point. See T199495.
 180                 if ( isset( $extraInputsString ) ) {
 181                         $htmlForm->addFooterText( Html::rawElement(
 182                                 'div',
 183                                 null,
 184                                 $extraInputsString
 185                         ) );
 186                 }
 187
 188                 $htmlForm->prepareForm()->displayForm( false );
 189         }
 190
 191         /**
 192          * @param array $filter
 193          * @return array Form descriptor
 194          */
 195         private function getFiltersDesc( $filter ) {
 196                 $options = [];
 197                 $default = [];
 198                 foreach ( $filter as $type => $val ) {
 199                         $message = $this->msg( "logeventslist-{$type}-log" );
 200                         // FIXME: Remove this check once T199657 is fully resolved.
 201                         if ( !$message->exists() ) {
 202                                 $message = $this->msg( "log-show-hide-{$type}" )->params( $this->msg( 'show' )->text() );
 203                         }
 204                         $options[ $message->text() ] = $type;
 205
 206                         if ( $val === false ) {
 207                                 $default[] = $type;
 208                         }
 209                 }
 210                 return [
 211                         'class' => 'HTMLMultiSelectField',
 212                         'label-message' => 'logeventslist-more-filters',
 213                         'flatlist' => true,
 214                         'options' => $options,
 215                         'default' => $default,
 216                 ];
 217         }
 218
 219         private function getDefaultQuery() {
 220                 if ( !isset( $this->mDefaultQuery ) ) {
 221                         $this->mDefaultQuery = $this->getRequest()->getQueryValues();
 222                         unset( $this->mDefaultQuery['title'] );
 223                         unset( $this->mDefaultQuery['dir'] );
 224                         unset( $this->mDefaultQuery['offset'] );
 225                         unset( $this->mDefaultQuery['limit'] );
 226                         unset( $this->mDefaultQuery['order'] );
 227                         unset( $this->mDefaultQuery['month'] );
 228                         unset( $this->mDefaultQuery['year'] );
 229                 }
 230
 231                 return $this->mDefaultQuery;
 232         }
 233
 234         /**
 235          * @param array $queryTypes
 236          * @return array Form descriptor
 237          */
 238         private function getTypeMenuDesc( $queryTypes ) {
 239                 $queryType = count( $queryTypes ) == 1 ? $queryTypes[0] : '';
 240
 241                 $typesByName = []; // Temporary array
 242                 // First pass to load the log names
 243                 foreach ( LogPage::validTypes() as $type ) {
 244                         $page = new LogPage( $type );
 245                         $restriction = $page->getRestriction();
 246                         if ( $this->getUser()->isAllowed( $restriction ) ) {
 247                                 $typesByName[$type] = $page->getName()->text();
 248                         }
 249                 }
 250
 251                 // Second pass to sort by name
 252                 asort( $typesByName );
 253
 254                 // Always put "All public logs" on top
 255                 $public = $typesByName[''];
 256                 unset( $typesByName[''] );
 257                 $typesByName = [ '' => $public ] + $typesByName;
 258
 259                 return [
 260                         'class' => 'HTMLSelectField',
 261                         'name' => 'type',
 262                         'options' => array_flip( $typesByName ),
 263                         'default' => $queryType,
 264                 ];
 265         }
 266
 267         /**
 268          * @param string $user
 269          * @return array Form descriptor
 270          */
 271         private function getUserInputDesc( $user ) {
 272                 return [
 273                         'class' => 'HTMLUserTextField',
 274                         'label-message' => 'specialloguserlabel',
 275                         'name' => 'user',
 276                         'default' => $user,
 277                 ];
 278         }
 279
 280         /**
 281          * @param string $title
 282          * @return array Form descriptor
 283          */
 284         private function getTitleInputDesc( $title ) {
 285                 return [
 286                         'class' => 'HTMLTitleTextField',
 287                         'label-message' => 'speciallogtitlelabel',
 288                         'name' => 'page',
 289                         'required' => false
 290                 ];
 291         }
 292
 293         /**
 294          * @param bool $pattern
 295          * @return array Form descriptor
 296          */
 297         private function getTitlePatternDesc( $pattern ) {
 298                 return [
 299                         'type' => 'check',
 300                         'label-message' => 'log-title-wildcard',
 301                         'name' => 'pattern',
 302                 ];
 303         }
 304
 305         /**
 306          * @param array $types
 307          * @return array|string Form descriptor or string with HTML
 308          */
 309         private function getExtraInputsDesc( $types ) {
 310                 if ( count( $types ) == 1 ) {
 311                         if ( $types[0] == 'suppress' ) {
 312                                 return [
 313                                         'type' => 'text',
 314                                         'label-message' => 'revdelete-offender',
 315                                         'name' => 'offender',
 316                                 ];
 317                         } else {
 318                                 // Allow extensions to add their own extra inputs
 319                                 // This could be an array or string. See T199495.
 320                                 $input = ''; // Deprecated
 321                                 $formDescriptor = [];
 322                                 Hooks::run( 'LogEventsListGetExtraInputs', [ $types[0], $this, &$input, &$formDescriptor ] );
 323
 324                                 return empty( $formDescriptor ) ? $input : $formDescriptor;
 325                         }
 326                 }
 327
 328                 return [];
 329         }
 330
 331         /**
 332          * Drop down menu for selection of actions that can be used to filter the log
 333          * @param array $types
 334          * @param string $action
 335          * @return array Form descriptor
 336          */
 337         private function getActionSelectorDesc( $types, $action ) {
 338                 $actionOptions = [];
 339                 $actionOptions[ 'log-action-filter-all' ] = '';
 340
 341                 foreach ( $this->allowedActions as $value ) {
 342                         $msgKey = 'log-action-filter-' . $types[0] . '-' . $value;
 343                         $actionOptions[ $msgKey ] = $value;
 344                 }
 345
 346                 return [
 347                         'class' => 'HTMLSelectField',
 348                         'name' => 'subtype',
 349                         'options-messages' => $actionOptions,
 350                         'default' => $action,
 351                         'label' => $this->msg( 'log-action-filter-' . $types[0] )->text(),
 352                 ];
 353         }
 354
 355         /**
 356          * Sets the action types allowed for log filtering
 357          * To one action type may correspond several log_actions
 358          * @param array $actions
 359          * @since 1.27
 360          */
 361         public function setAllowedActions( $actions ) {
 362                 $this->allowedActions = $actions;
 363         }
 364
 365         /**
 366          * @return string
 367          */
 368         public function beginLogEventsList() {
 369                 return "<ul>\n";
 370         }
 371
 372         /**
 373          * @return string
 374          */
 375         public function endLogEventsList() {
 376                 return "</ul>\n";
 377         }
 378
 379         /**
 380          * @param stdClass $row A single row from the result set
 381          * @return string Formatted HTML list item
 382          */
 383         public function logLine( $row ) {
 384                 $entry = DatabaseLogEntry::newFromRow( $row );
 385                 $formatter = LogFormatter::newFromEntry( $entry );
 386                 $formatter->setContext( $this->getContext() );
 387                 $formatter->setLinkRenderer( $this->getLinkRenderer() );
 388                 $formatter->setShowUserToolLinks( !( $this->flags & self::NO_EXTRA_USER_LINKS ) );
 389
 390                 $time = htmlspecialchars( $this->getLanguage()->userTimeAndDate(
 391                         $entry->getTimestamp(), $this->getUser() ) );
 392
 393                 $action = $formatter->getActionText();
 394
 395                 if ( $this->flags & self::NO_ACTION_LINK ) {
 396                         $revert = '';
 397                 } else {
 398                         $revert = $formatter->getActionLinks();
 399                         if ( $revert != '' ) {
 400                                 $revert = '<span class="mw-logevent-actionlink">' . $revert . '</span>';
 401                         }
 402                 }
 403
 404                 $comment = $formatter->getComment();
 405
 406                 // Some user can hide log items and have review links
 407                 $del = $this->getShowHideLinks( $row );
 408
 409                 // Any tags...
 410                 list( $tagDisplay, $newClasses ) = ChangeTags::formatSummaryRow(
 411                         $row->ts_tags,
 412                         'logevent',
 413                         $this->getContext()
 414                 );
 415                 $classes = array_merge(
 416                         [ 'mw-logline-' . $entry->getType() ],
 417                         $newClasses
 418                 );
 419                 $attribs = [
 420                         'data-mw-logid' => $entry->getId(),
 421                         'data-mw-logaction' => $entry->getFullType(),
 422                 ];
 423                 $ret = "$del $time $action $comment $revert $tagDisplay";
 424
 425                 // Let extensions add data
 426                 Hooks::run( 'LogEventsListLineEnding', [ $this, &$ret, $entry, &$classes, &$attribs ] );
 427                 $attribs = array_filter( $attribs,
 428                         [ Sanitizer::class, 'isReservedDataAttribute' ],
 429                         ARRAY_FILTER_USE_KEY
 430                 );
 431                 $attribs['class'] = implode( ' ', $classes );
 432
 433                 return Html::rawElement( 'li', $attribs, $ret ) . "\n";
 434         }
 435
 436         /**
 437          * @param stdClass $row
 438          * @return string
 439          */
 440         private function getShowHideLinks( $row ) {
 441                 // We don't want to see the links and
 442                 if ( $this->flags == self::NO_ACTION_LINK ) {
 443                         return '';
 444                 }
 445
 446                 $user = $this->getUser();
 447
 448                 // If change tag editing is available to this user, return the checkbox
 449                 if ( $this->flags & self::USE_CHECKBOXES && $this->showTagEditUI ) {
 450                         return Xml::check(
 451                                 'showhiderevisions',
 452                                 false,
 453                                 [ 'name' => 'ids[' . $row->log_id . ']' ]
 454                         );
 455                 }
 456
 457                 // no one can hide items from the suppress log.
 458                 if ( $row->log_type == 'suppress' ) {
 459                         return '';
 460                 }
 461
 462                 $del = '';
 463                 // Don't show useless checkbox to people who cannot hide log entries
 464                 if ( $user->isAllowed( 'deletedhistory' ) ) {
 465                         $canHide = $user->isAllowed( 'deletelogentry' );
 466                         $canViewSuppressedOnly = $user->isAllowed( 'viewsuppressed' ) &&
 467                                 !$user->isAllowed( 'suppressrevision' );
 468                         $entryIsSuppressed = self::isDeleted( $row, LogPage::DELETED_RESTRICTED );
 469                         $canViewThisSuppressedEntry = $canViewSuppressedOnly && $entryIsSuppressed;
 470                         if ( $row->log_deleted || $canHide ) {
 471                                 // Show checkboxes instead of links.
 472                                 if ( $canHide && $this->flags & self::USE_CHECKBOXES && !$canViewThisSuppressedEntry ) {
 473                                         // If event was hidden from sysops
 474                                         if ( !self::userCan( $row, LogPage::DELETED_RESTRICTED, $user ) ) {
 475                                                 $del = Xml::check( 'deleterevisions', false, [ 'disabled' => 'disabled' ] );
 476                                         } else {
 477                                                 $del = Xml::check(
 478                                                         'showhiderevisions',
 479                                                         false,
 480                                                         [ 'name' => 'ids[' . $row->log_id . ']' ]
 481                                                 );
 482                                         }
 483                                 } else {
 484                                         // If event was hidden from sysops
 485                                         if ( !self::userCan( $row, LogPage::DELETED_RESTRICTED, $user ) ) {
 486                                                 $del = Linker::revDeleteLinkDisabled( $canHide );
 487                                         } else {
 488                                                 $query = [
 489                                                         'target' => SpecialPage::getTitleFor( 'Log', $row->log_type )->getPrefixedDBkey(),
 490                                                         'type' => 'logging',
 491                                                         'ids' => $row->log_id,
 492                                                 ];
 493                                                 $del = Linker::revDeleteLink(
 494                                                         $query,
 495                                                         $entryIsSuppressed,
 496                                                         $canHide && !$canViewThisSuppressedEntry
 497                                                 );
 498                                         }
 499                                 }
 500                         }
 501                 }
 502
 503                 return $del;
 504         }
 505
 506         /**
 507          * @param stdClass $row
 508          * @param string|array $type
 509          * @param string|array $action
 510          * @param string $right
 511          * @return bool
 512          */
 513         public static function typeAction( $row, $type, $action, $right = '' ) {
 514                 $match = is_array( $type ) ?
 515                         in_array( $row->log_type, $type ) : $row->log_type == $type;
 516                 if ( $match ) {
 517                         $match = is_array( $action ) ?
 518                                 in_array( $row->log_action, $action ) : $row->log_action == $action;
 519                         if ( $match && $right ) {
 520                                 global $wgUser;
 521                                 $match = $wgUser->isAllowed( $right );
 522                         }
 523                 }
 524
 525                 return $match;
 526         }
 527
 528         /**
 529          * Determine if the current user is allowed to view a particular
 530          * field of this log row, if it's marked as deleted.
 531          *
 532          * @param stdClass $row
 533          * @param int $field
 534          * @param User|null $user User to check, or null to use $wgUser
 535          * @return bool
 536          */
 537         public static function userCan( $row, $field, User $user = null ) {
 538                 return self::userCanBitfield( $row->log_deleted, $field, $user );
 539         }
 540
 541         /**
 542          * Determine if the current user is allowed to view a particular
 543          * field of this log row, if it's marked as deleted.
 544          *
 545          * @param int $bitfield Current field
 546          * @param int $field
 547          * @param User|null $user User to check, or null to use $wgUser
 548          * @return bool
 549          */
 550         public static function userCanBitfield( $bitfield, $field, User $user = null ) {
 551                 if ( $bitfield & $field ) {
 552                         if ( $user === null ) {
 553                                 global $wgUser;
 554                                 $user = $wgUser;
 555                         }
 556                         if ( $bitfield & LogPage::DELETED_RESTRICTED ) {
 557                                 $permissions = [ 'suppressrevision', 'viewsuppressed' ];
 558                         } else {
 559                                 $permissions = [ 'deletedhistory' ];
 560                         }
 561                         $permissionlist = implode( ', ', $permissions );
 562                         wfDebug( "Checking for $permissionlist due to $field match on $bitfield\n" );
 563                         return $user->isAllowedAny( ...$permissions );
 564                 }
 565                 return true;
 566         }
 567
 568         /**
 569          * @param stdClass $row
 570          * @param int $field One of DELETED_* bitfield constants
 571          * @return bool
 572          */
 573         public static function isDeleted( $row, $field ) {
 574                 return ( $row->log_deleted & $field ) == $field;
 575         }
 576
 577         /**
 578          * Show log extract. Either with text and a box (set $msgKey) or without (don't set $msgKey)
 579          *
 580          * @param OutputPage|string &$out
 581          * @param string|array $types Log types to show
 582          * @param string|Title $page The page title to show log entries for
 583          * @param string $user The user who made the log entries
 584          * @param array $param Associative Array with the following additional options:
 585          * - lim Integer Limit of items to show, default is 50
 586          * - conds Array Extra conditions for the query
 587          *   (e.g. 'log_action != ' . $dbr->addQuotes( 'revision' ))
 588          * - showIfEmpty boolean Set to false if you don't want any output in case the loglist is empty
 589          *   if set to true (default), "No matching items in log" is displayed if loglist is empty
 590          * - msgKey Array If you want a nice box with a message, set this to the key of the message.
 591          *   First element is the message key, additional optional elements are parameters for the key
 592          *   that are processed with wfMessage
 593          * - offset Set to overwrite offset parameter in WebRequest
 594          *   set to '' to unset offset
 595          * - wrap String Wrap the message in html (usually something like "<div ...>$1</div>").
 596          * - flags Integer display flags (NO_ACTION_LINK,NO_EXTRA_USER_LINKS)
 597          * - useRequestParams boolean Set true to use Pager-related parameters in the WebRequest
 598          * - useMaster boolean Use master DB
 599          * - extraUrlParams array|bool Additional url parameters for "full log" link (if it is shown)
 600          * @return int Number of total log items (not limited by $lim)
 601          */
 602         public static function showLogExtract(
 603                 &$out, $types = [], $page = '', $user = '', $param = []
 604         ) {
 605                 $defaultParameters = [
 606                         'lim' => 25,
 607                         'conds' => [],
 608                         'showIfEmpty' => true,
 609                         'msgKey' => [ '' ],
 610                         'wrap' => "$1",
 611                         'flags' => 0,
 612                         'useRequestParams' => false,
 613                         'useMaster' => false,
 614                         'extraUrlParams' => false,
 615                 ];
 616                 # The + operator appends elements of remaining keys from the right
 617                 # handed array to the left handed, whereas duplicated keys are NOT overwritten.
 618                 $param += $defaultParameters;
 619                 # Convert $param array to individual variables
 620                 $lim = $param['lim'];
 621                 $conds = $param['conds'];
 622                 $showIfEmpty = $param['showIfEmpty'];
 623                 $msgKey = $param['msgKey'];
 624                 $wrap = $param['wrap'];
 625                 $flags = $param['flags'];
 626                 $extraUrlParams = $param['extraUrlParams'];
 627
 628                 $useRequestParams = $param['useRequestParams'];
 629                 if ( !is_array( $msgKey ) ) {
 630                         $msgKey = [ $msgKey ];
 631                 }
 632
 633                 if ( $out instanceof OutputPage ) {
 634                         $context = $out->getContext();
 635                 } else {
 636                         $context = RequestContext::getMain();
 637                 }
 638
 639                 // FIXME: Figure out how to inject this
 640                 $linkRenderer = MediaWikiServices::getInstance()->getLinkRenderer();
 641
 642                 # Insert list of top 50 (or top $lim) items
 643                 $loglist = new LogEventsList( $context, $linkRenderer, $flags );
 644                 $pager = new LogPager( $loglist, $types, $user, $page, '', $conds );
 645                 if ( !$useRequestParams ) {
 646                         # Reset vars that may have been taken from the request
 647                         $pager->mLimit = 50;
 648                         $pager->mDefaultLimit = 50;
 649                         $pager->mOffset = "";
 650                         $pager->mIsBackwards = false;
 651                 }
 652
 653                 if ( $param['useMaster'] ) {
 654                         $pager->mDb = wfGetDB( DB_MASTER );
 655                 }
 656                 if ( isset( $param['offset'] ) ) { # Tell pager to ignore WebRequest offset
 657                         $pager->setOffset( $param['offset'] );
 658                 }
 659
 660                 if ( $lim > 0 ) {
 661                         $pager->mLimit = $lim;
 662                 }
 663                 // Fetch the log rows and build the HTML if needed
 664                 $logBody = $pager->getBody();
 665                 $numRows = $pager->getNumRows();
 666
 667                 $s = '';
 668
 669                 if ( $logBody ) {
 670                         if ( $msgKey[0] ) {
 671                                 $dir = $context->getLanguage()->getDir();
 672                                 $lang = $context->getLanguage()->getHtmlCode();
 673
 674                                 $s = Xml::openElement( 'div', [
 675                                         'class' => "mw-warning-with-logexcerpt mw-content-$dir",
 676                                         'dir' => $dir,
 677                                         'lang' => $lang,
 678                                 ] );
 679
 680                                 if ( count( $msgKey ) == 1 ) {
 681                                         $s .= $context->msg( $msgKey[0] )->parseAsBlock();
 682                                 } else { // Process additional arguments
 683                                         $args = $msgKey;
 684                                         array_shift( $args );
 685                                         $s .= $context->msg( $msgKey[0], $args )->parseAsBlock();
 686                                 }
 687                         }
 688                         $s .= $loglist->beginLogEventsList() .
 689                                 $logBody .
 690                                 $loglist->endLogEventsList();
 691                 } elseif ( $showIfEmpty ) {
 692                         $s = Html::rawElement( 'div', [ 'class' => 'mw-warning-logempty' ],
 693                                 $context->msg( 'logempty' )->parse() );
 694                 }
 695
 696                 if ( $numRows > $pager->mLimit ) { # Show "Full log" link
 697                         $urlParam = [];
 698                         if ( $page instanceof Title ) {
 699                                 $urlParam['page'] = $page->getPrefixedDBkey();
 700                         } elseif ( $page != '' ) {
 701                                 $urlParam['page'] = $page;
 702                         }
 703
 704                         if ( $user != '' ) {
 705                                 $urlParam['user'] = $user;
 706                         }
 707
 708                         if ( !is_array( $types ) ) { # Make it an array, if it isn't
 709                                 $types = [ $types ];
 710                         }
 711
 712                         # If there is exactly one log type, we can link to Special:Log?type=foo
 713                         if ( count( $types ) == 1 ) {
 714                                 $urlParam['type'] = $types[0];
 715                         }
 716
 717                         if ( $extraUrlParams !== false ) {
 718                                 $urlParam = array_merge( $urlParam, $extraUrlParams );
 719                         }
 720
 721                         $s .= $linkRenderer->makeKnownLink(
 722                                 SpecialPage::getTitleFor( 'Log' ),
 723                                 $context->msg( 'log-fulllog' )->text(),
 724                                 [],
 725                                 $urlParam
 726                         );
 727                 }
 728
 729                 if ( $logBody && $msgKey[0] ) {
 730                         $s .= '</div>';
 731                 }
 732
 733                 if ( $wrap != '' ) { // Wrap message in html
 734                         $s = str_replace( '$1', $s, $wrap );
 735                 }
 736
 737                 /* hook can return false, if we don't want the message to be emitted (Wikia BugId:7093) */
 738                 if ( Hooks::run( 'LogEventsListShowLogExtract', [ &$s, $types, $page, $user, $param ] ) ) {
 739                         // $out can be either an OutputPage object or a String-by-reference
 740                         if ( $out instanceof OutputPage ) {
 741                                 $out->addHTML( $s );
 742                         } else {
 743                                 $out = $s;
 744                         }
 745                 }
 746
 747                 return $numRows;
 748         }
 749
 750         /**
 751          * SQL clause to skip forbidden log types for this user
 752          *
 753          * @param IDatabase $db
 754          * @param string $audience Public/user
 755          * @param User|null $user User to check, or null to use $wgUser
 756          * @return string|bool String on success, false on failure.
 757          */
 758         public static function getExcludeClause( $db, $audience = 'public', User $user = null ) {
 759                 global $wgLogRestrictions;
 760
 761                 if ( $audience != 'public' && $user === null ) {
 762                         global $wgUser;
 763                         $user = $wgUser;
 764                 }
 765
 766                 // Reset the array, clears extra "where" clauses when $par is used
 767                 $hiddenLogs = [];
 768
 769                 // Don't show private logs to unprivileged users
 770                 foreach ( $wgLogRestrictions as $logType => $right ) {
 771                         if ( $audience == 'public' || !$user->isAllowed( $right ) ) {
 772                                 $hiddenLogs[] = $logType;
 773                         }
 774                 }
 775                 if ( count( $hiddenLogs ) == 1 ) {
 776                         return 'log_type != ' . $db->addQuotes( $hiddenLogs[0] );
 777                 } elseif ( $hiddenLogs ) {
 778                         return 'log_type NOT IN (' . $db->makeList( $hiddenLogs ) . ')';
 779                 }
 780
 781                 return false;
 782         }
 783 }