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 (
 134                         is_string( $extraInputsDescriptor ) &&
 135                         $extraInputsDescriptor !== ''
 136                 ) {
 137                         // We'll add this to the footer of the form later
 138                         $extraInputsString = $extraInputsDescriptor;
 139                         wfDeprecated( '$input in LogEventsListGetExtraInputs hook', '1.32' );
 140                 }
 141
 142                 // Title pattern, if allowed
 143                 if ( !$this->getConfig()->get( 'MiserMode' ) ) {
 144                         $formDescriptor['pattern'] = $this->getTitlePatternDesc( $pattern );
 145                 }
 146
 147                 // Date menu
 148                 $formDescriptor['date'] = [
 149                         'type' => 'date',
 150                         'label-message' => 'date',
 151                         'default' => $year && $month && $day ? sprintf( "%04d-%02d-%02d", $year, $month, $day ) : '',
 152                 ];
 153
 154                 // Tag filter
 155                 $formDescriptor['tagfilter'] = [
 156                         'type' => 'tagfilter',
 157                         'name' => 'tagfilter',
 158                         'label-raw' => $this->msg( 'tag-filter' )->parse(),
 159                 ];
 160
 161                 // Filter links
 162                 if ( $filter ) {
 163                         $formDescriptor['filters'] = $this->getFiltersDesc( $filter );
 164                 }
 165
 166                 // Action filter
 167                 if (
 168                         $action !== null &&
 169                         $this->allowedActions !== null &&
 170                         count( $this->allowedActions ) > 0
 171                 ) {
 172                         $formDescriptor['subtype'] = $this->getActionSelectorDesc( $types, $action );
 173                 }
 174
 175                 $context = new DerivativeContext( $this->getContext() );
 176                 $context->setTitle( SpecialPage::getTitleFor( 'Log' ) ); // Remove subpage
 177                 $htmlForm = HTMLForm::factory( 'ooui', $formDescriptor, $context );
 178                 $htmlForm
 179                         ->setSubmitText( $this->msg( 'logeventslist-submit' )->text() )
 180                         ->setMethod( 'get' )
 181                         ->setWrapperLegendMsg( 'log' );
 182
 183                 // TODO This will should be removed at some point. See T199495.
 184                 if ( isset( $extraInputsString ) ) {
 185                         $htmlForm->addFooterText( Html::rawElement(
 186                                 'div',
 187                                 null,
 188                                 $extraInputsString
 189                         ) );
 190                 }
 191
 192                 $htmlForm->prepareForm()->displayForm( false );
 193         }
 194
 195         /**
 196          * @param array $filter
 197          * @return array Form descriptor
 198          */
 199         private function getFiltersDesc( $filter ) {
 200                 $options = [];
 201                 $default = [];
 202                 foreach ( $filter as $type => $val ) {
 203                         $message = $this->msg( "logeventslist-{$type}-log" );
 204                         // FIXME: Remove this check once T199657 is fully resolved.
 205                         if ( !$message->exists() ) {
 206                                 $message = $this->msg( "log-show-hide-{$type}" )->params( $this->msg( 'show' )->text() );
 207                         }
 208                         $options[ $message->text() ] = $type;
 209
 210                         if ( $val === false ) {
 211                                 $default[] = $type;
 212                         }
 213                 }
 214                 return [
 215                         'class' => 'HTMLMultiSelectField',
 216                         'label-message' => 'logeventslist-more-filters',
 217                         'flatlist' => true,
 218                         'options' => $options,
 219                         'default' => $default,
 220                 ];
 221         }
 222
 223         /**
 224          * @param array $queryTypes
 225          * @return array Form descriptor
 226          */
 227         private function getTypeMenuDesc( $queryTypes ) {
 228                 $queryType = count( $queryTypes ) == 1 ? $queryTypes[0] : '';
 229
 230                 $typesByName = []; // Temporary array
 231                 // First pass to load the log names
 232                 foreach ( LogPage::validTypes() as $type ) {
 233                         $page = new LogPage( $type );
 234                         $restriction = $page->getRestriction();
 235                         if ( $this->getUser()->isAllowed( $restriction ) ) {
 236                                 $typesByName[$type] = $page->getName()->text();
 237                         }
 238                 }
 239
 240                 // Second pass to sort by name
 241                 asort( $typesByName );
 242
 243                 // Always put "All public logs" on top
 244                 $public = $typesByName[''];
 245                 unset( $typesByName[''] );
 246                 $typesByName = [ '' => $public ] + $typesByName;
 247
 248                 return [
 249                         'class' => 'HTMLSelectField',
 250                         'name' => 'type',
 251                         'options' => array_flip( $typesByName ),
 252                         'default' => $queryType,
 253                 ];
 254         }
 255
 256         /**
 257          * @param string $user
 258          * @return array Form descriptor
 259          */
 260         private function getUserInputDesc( $user ) {
 261                 return [
 262                         'class' => 'HTMLUserTextField',
 263                         'label-message' => 'specialloguserlabel',
 264                         'name' => 'user',
 265                         'default' => $user,
 266                 ];
 267         }
 268
 269         /**
 270          * @param string $title
 271          * @return array Form descriptor
 272          */
 273         private function getTitleInputDesc( $title ) {
 274                 return [
 275                         'class' => 'HTMLTitleTextField',
 276                         'label-message' => 'speciallogtitlelabel',
 277                         'name' => 'page',
 278                         'required' => false
 279                 ];
 280         }
 281
 282         /**
 283          * @param bool $pattern
 284          * @return array Form descriptor
 285          */
 286         private function getTitlePatternDesc( $pattern ) {
 287                 return [
 288                         'type' => 'check',
 289                         'label-message' => 'log-title-wildcard',
 290                         'name' => 'pattern',
 291                 ];
 292         }
 293
 294         /**
 295          * @param array $types
 296          * @return array|string Form descriptor or string with HTML
 297          */
 298         private function getExtraInputsDesc( $types ) {
 299                 if ( count( $types ) == 1 ) {
 300                         if ( $types[0] == 'suppress' ) {
 301                                 return [
 302                                         'type' => 'text',
 303                                         'label-message' => 'revdelete-offender',
 304                                         'name' => 'offender',
 305                                 ];
 306                         } else {
 307                                 // Allow extensions to add their own extra inputs
 308                                 // This could be an array or string. See T199495.
 309                                 $input = ''; // Deprecated
 310                                 $formDescriptor = [];
 311                                 Hooks::run( 'LogEventsListGetExtraInputs', [ $types[0], $this, &$input, &$formDescriptor ] );
 312
 313                                 return empty( $formDescriptor ) ? $input : $formDescriptor;
 314                         }
 315                 }
 316
 317                 return [];
 318         }
 319
 320         /**
 321          * Drop down menu for selection of actions that can be used to filter the log
 322          * @param array $types
 323          * @param string $action
 324          * @return array Form descriptor
 325          */
 326         private function getActionSelectorDesc( $types, $action ) {
 327                 $actionOptions = [];
 328                 $actionOptions[ 'log-action-filter-all' ] = '';
 329
 330                 foreach ( $this->allowedActions as $value ) {
 331                         $msgKey = 'log-action-filter-' . $types[0] . '-' . $value;
 332                         $actionOptions[ $msgKey ] = $value;
 333                 }
 334
 335                 return [
 336                         'class' => 'HTMLSelectField',
 337                         'name' => 'subtype',
 338                         'options-messages' => $actionOptions,
 339                         'default' => $action,
 340                         'label' => $this->msg( 'log-action-filter-' . $types[0] )->text(),
 341                 ];
 342         }
 343
 344         /**
 345          * Sets the action types allowed for log filtering
 346          * To one action type may correspond several log_actions
 347          * @param array $actions
 348          * @since 1.27
 349          */
 350         public function setAllowedActions( $actions ) {
 351                 $this->allowedActions = $actions;
 352         }
 353
 354         /**
 355          * @return string
 356          */
 357         public function beginLogEventsList() {
 358                 return "<ul>\n";
 359         }
 360
 361         /**
 362          * @return string
 363          */
 364         public function endLogEventsList() {
 365                 return "</ul>\n";
 366         }
 367
 368         /**
 369          * @param stdClass $row A single row from the result set
 370          * @return string Formatted HTML list item
 371          */
 372         public function logLine( $row ) {
 373                 $entry = DatabaseLogEntry::newFromRow( $row );
 374                 $formatter = LogFormatter::newFromEntry( $entry );
 375                 $formatter->setContext( $this->getContext() );
 376                 $formatter->setLinkRenderer( $this->getLinkRenderer() );
 377                 $formatter->setShowUserToolLinks( !( $this->flags & self::NO_EXTRA_USER_LINKS ) );
 378
 379                 $time = htmlspecialchars( $this->getLanguage()->userTimeAndDate(
 380                         $entry->getTimestamp(), $this->getUser() ) );
 381
 382                 $action = $formatter->getActionText();
 383
 384                 if ( $this->flags & self::NO_ACTION_LINK ) {
 385                         $revert = '';
 386                 } else {
 387                         $revert = $formatter->getActionLinks();
 388                         if ( $revert != '' ) {
 389                                 $revert = '<span class="mw-logevent-actionlink">' . $revert . '</span>';
 390                         }
 391                 }
 392
 393                 $comment = $formatter->getComment();
 394
 395                 // Some user can hide log items and have review links
 396                 $del = $this->getShowHideLinks( $row );
 397
 398                 // Any tags...
 399                 list( $tagDisplay, $newClasses ) = ChangeTags::formatSummaryRow(
 400                         $row->ts_tags,
 401                         'logevent',
 402                         $this->getContext()
 403                 );
 404                 $classes = array_merge(
 405                         [ 'mw-logline-' . $entry->getType() ],
 406                         $newClasses
 407                 );
 408                 $attribs = [
 409                         'data-mw-logid' => $entry->getId(),
 410                         'data-mw-logaction' => $entry->getFullType(),
 411                 ];
 412                 $ret = "$del $time $action $comment $revert $tagDisplay";
 413
 414                 // Let extensions add data
 415                 Hooks::run( 'LogEventsListLineEnding', [ $this, &$ret, $entry, &$classes, &$attribs ] );
 416                 $attribs = array_filter( $attribs,
 417                         [ Sanitizer::class, 'isReservedDataAttribute' ],
 418                         ARRAY_FILTER_USE_KEY
 419                 );
 420                 $attribs['class'] = implode( ' ', $classes );
 421
 422                 return Html::rawElement( 'li', $attribs, $ret ) . "\n";
 423         }
 424
 425         /**
 426          * @param stdClass $row
 427          * @return string
 428          */
 429         private function getShowHideLinks( $row ) {
 430                 // We don't want to see the links and
 431                 if ( $this->flags == self::NO_ACTION_LINK ) {
 432                         return '';
 433                 }
 434
 435                 $user = $this->getUser();
 436
 437                 // If change tag editing is available to this user, return the checkbox
 438                 if ( $this->flags & self::USE_CHECKBOXES && $this->showTagEditUI ) {
 439                         return Xml::check(
 440                                 'showhiderevisions',
 441                                 false,
 442                                 [ 'name' => 'ids[' . $row->log_id . ']' ]
 443                         );
 444                 }
 445
 446                 // no one can hide items from the suppress log.
 447                 if ( $row->log_type == 'suppress' ) {
 448                         return '';
 449                 }
 450
 451                 $del = '';
 452                 // Don't show useless checkbox to people who cannot hide log entries
 453                 if ( $user->isAllowed( 'deletedhistory' ) ) {
 454                         $canHide = $user->isAllowed( 'deletelogentry' );
 455                         $canViewSuppressedOnly = $user->isAllowed( 'viewsuppressed' ) &&
 456                                 !$user->isAllowed( 'suppressrevision' );
 457                         $entryIsSuppressed = self::isDeleted( $row, LogPage::DELETED_RESTRICTED );
 458                         $canViewThisSuppressedEntry = $canViewSuppressedOnly && $entryIsSuppressed;
 459                         if ( $row->log_deleted || $canHide ) {
 460                                 // Show checkboxes instead of links.
 461                                 if ( $canHide && $this->flags & self::USE_CHECKBOXES && !$canViewThisSuppressedEntry ) {
 462                                         // If event was hidden from sysops
 463                                         if ( !self::userCan( $row, LogPage::DELETED_RESTRICTED, $user ) ) {
 464                                                 $del = Xml::check( 'deleterevisions', false, [ 'disabled' => 'disabled' ] );
 465                                         } else {
 466                                                 $del = Xml::check(
 467                                                         'showhiderevisions',
 468                                                         false,
 469                                                         [ 'name' => 'ids[' . $row->log_id . ']' ]
 470                                                 );
 471                                         }
 472                                 } else {
 473                                         // If event was hidden from sysops
 474                                         if ( !self::userCan( $row, LogPage::DELETED_RESTRICTED, $user ) ) {
 475                                                 $del = Linker::revDeleteLinkDisabled( $canHide );
 476                                         } else {
 477                                                 $query = [
 478                                                         'target' => SpecialPage::getTitleFor( 'Log', $row->log_type )->getPrefixedDBkey(),
 479                                                         'type' => 'logging',
 480                                                         'ids' => $row->log_id,
 481                                                 ];
 482                                                 $del = Linker::revDeleteLink(
 483                                                         $query,
 484                                                         $entryIsSuppressed,
 485                                                         $canHide && !$canViewThisSuppressedEntry
 486                                                 );
 487                                         }
 488                                 }
 489                         }
 490                 }
 491
 492                 return $del;
 493         }
 494
 495         /**
 496          * @param stdClass $row
 497          * @param string|array $type
 498          * @param string|array $action
 499          * @param string $right
 500          * @return bool
 501          */
 502         public static function typeAction( $row, $type, $action, $right = '' ) {
 503                 $match = is_array( $type ) ?
 504                         in_array( $row->log_type, $type ) : $row->log_type == $type;
 505                 if ( $match ) {
 506                         $match = is_array( $action ) ?
 507                                 in_array( $row->log_action, $action ) : $row->log_action == $action;
 508                         if ( $match && $right ) {
 509                                 global $wgUser;
 510                                 $match = $wgUser->isAllowed( $right );
 511                         }
 512                 }
 513
 514                 return $match;
 515         }
 516
 517         /**
 518          * Determine if the current user is allowed to view a particular
 519          * field of this log row, if it's marked as deleted and/or restricted log type.
 520          *
 521          * @param stdClass $row
 522          * @param int $field
 523          * @param User|null $user User to check, or null to use $wgUser
 524          * @return bool
 525          */
 526         public static function userCan( $row, $field, User $user = null ) {
 527                 return self::userCanBitfield( $row->log_deleted, $field, $user ) &&
 528                         self::userCanViewLogType( $row->log_type, $user );
 529         }
 530
 531         /**
 532          * Determine if the current user is allowed to view a particular
 533          * field of this log row, if it's marked as deleted.
 534          *
 535          * @param int $bitfield Current field
 536          * @param int $field
 537          * @param User|null $user User to check, or null to use $wgUser
 538          * @return bool
 539          */
 540         public static function userCanBitfield( $bitfield, $field, User $user = null ) {
 541                 if ( $bitfield & $field ) {
 542                         if ( $user === null ) {
 543                                 global $wgUser;
 544                                 $user = $wgUser;
 545                         }
 546                         if ( $bitfield & LogPage::DELETED_RESTRICTED ) {
 547                                 $permissions = [ 'suppressrevision', 'viewsuppressed' ];
 548                         } else {
 549                                 $permissions = [ 'deletedhistory' ];
 550                         }
 551                         $permissionlist = implode( ', ', $permissions );
 552                         wfDebug( "Checking for $permissionlist due to $field match on $bitfield\n" );
 553                         return MediaWikiServices::getInstance()
 554                                 ->getPermissionManager()
 555                                 ->userHasAnyRight( $user, ...$permissions );
 556                 }
 557                 return true;
 558         }
 559
 560         /**
 561          * Determine if the current user is allowed to view a particular
 562          * field of this log row, if it's marked as restricted log type.
 563          *
 564          * @param stdClass $type
 565          * @param User|null $user User to check, or null to use $wgUser
 566          * @return bool
 567          */
 568         public static function userCanViewLogType( $type, User $user = null ) {
 569                 if ( $user === null ) {
 570                         global $wgUser;
 571                         $user = $wgUser;
 572                 }
 573                 $logRestrictions = MediaWikiServices::getInstance()->getMainConfig()->get( 'LogRestrictions' );
 574                 if ( isset( $logRestrictions[$type] ) && !$user->isAllowed( $logRestrictions[$type] ) ) {
 575                         return false;
 576                 }
 577                 return true;
 578         }
 579
 580         /**
 581          * @param stdClass $row
 582          * @param int $field One of DELETED_* bitfield constants
 583          * @return bool
 584          */
 585         public static function isDeleted( $row, $field ) {
 586                 return ( $row->log_deleted & $field ) == $field;
 587         }
 588
 589         /**
 590          * Show log extract. Either with text and a box (set $msgKey) or without (don't set $msgKey)
 591          *
 592          * @param OutputPage|string &$out
 593          * @param string|array $types Log types to show
 594          * @param string|Title $page The page title to show log entries for
 595          * @param string $user The user who made the log entries
 596          * @param array $param Associative Array with the following additional options:
 597          * - lim Integer Limit of items to show, default is 50
 598          * - conds Array Extra conditions for the query
 599          *   (e.g. 'log_action != ' . $dbr->addQuotes( 'revision' ))
 600          * - showIfEmpty boolean Set to false if you don't want any output in case the loglist is empty
 601          *   if set to true (default), "No matching items in log" is displayed if loglist is empty
 602          * - msgKey Array If you want a nice box with a message, set this to the key of the message.
 603          *   First element is the message key, additional optional elements are parameters for the key
 604          *   that are processed with wfMessage
 605          * - offset Set to overwrite offset parameter in WebRequest
 606          *   set to '' to unset offset
 607          * - wrap String Wrap the message in html (usually something like "<div ...>$1</div>").
 608          * - flags Integer display flags (NO_ACTION_LINK,NO_EXTRA_USER_LINKS)
 609          * - useRequestParams boolean Set true to use Pager-related parameters in the WebRequest
 610          * - useMaster boolean Use master DB
 611          * - extraUrlParams array|bool Additional url parameters for "full log" link (if it is shown)
 612          * @return int Number of total log items (not limited by $lim)
 613          */
 614         public static function showLogExtract(
 615                 &$out, $types = [], $page = '', $user = '', $param = []
 616         ) {
 617                 $defaultParameters = [
 618                         'lim' => 25,
 619                         'conds' => [],
 620                         'showIfEmpty' => true,
 621                         'msgKey' => [ '' ],
 622                         'wrap' => "$1",
 623                         'flags' => 0,
 624                         'useRequestParams' => false,
 625                         'useMaster' => false,
 626                         'extraUrlParams' => false,
 627                 ];
 628                 # The + operator appends elements of remaining keys from the right
 629                 # handed array to the left handed, whereas duplicated keys are NOT overwritten.
 630                 $param += $defaultParameters;
 631                 # Convert $param array to individual variables
 632                 $lim = $param['lim'];
 633                 $conds = $param['conds'];
 634                 $showIfEmpty = $param['showIfEmpty'];
 635                 $msgKey = $param['msgKey'];
 636                 $wrap = $param['wrap'];
 637                 $flags = $param['flags'];
 638                 $extraUrlParams = $param['extraUrlParams'];
 639
 640                 $useRequestParams = $param['useRequestParams'];
 641                 if ( !is_array( $msgKey ) ) {
 642                         $msgKey = [ $msgKey ];
 643                 }
 644
 645                 if ( $out instanceof OutputPage ) {
 646                         $context = $out->getContext();
 647                 } else {
 648                         $context = RequestContext::getMain();
 649                 }
 650
 651                 // FIXME: Figure out how to inject this
 652                 $linkRenderer = MediaWikiServices::getInstance()->getLinkRenderer();
 653
 654                 # Insert list of top 50 (or top $lim) items
 655                 $loglist = new LogEventsList( $context, $linkRenderer, $flags );
 656                 $pager = new LogPager( $loglist, $types, $user, $page, '', $conds );
 657                 if ( !$useRequestParams ) {
 658                         # Reset vars that may have been taken from the request
 659                         $pager->mLimit = 50;
 660                         $pager->mDefaultLimit = 50;
 661                         $pager->mOffset = "";
 662                         $pager->mIsBackwards = false;
 663                 }
 664
 665                 if ( $param['useMaster'] ) {
 666                         $pager->mDb = wfGetDB( DB_MASTER );
 667                 }
 668                 if ( isset( $param['offset'] ) ) { # Tell pager to ignore WebRequest offset
 669                         $pager->setOffset( $param['offset'] );
 670                 }
 671
 672                 if ( $lim > 0 ) {
 673                         $pager->mLimit = $lim;
 674                 }
 675                 // Fetch the log rows and build the HTML if needed
 676                 $logBody = $pager->getBody();
 677                 $numRows = $pager->getNumRows();
 678
 679                 $s = '';
 680
 681                 if ( $logBody ) {
 682                         if ( $msgKey[0] ) {
 683                                 $dir = $context->getLanguage()->getDir();
 684                                 $lang = $context->getLanguage()->getHtmlCode();
 685
 686                                 $s = Xml::openElement( 'div', [
 687                                         'class' => "mw-warning-with-logexcerpt mw-content-$dir",
 688                                         'dir' => $dir,
 689                                         'lang' => $lang,
 690                                 ] );
 691
 692                                 if ( count( $msgKey ) == 1 ) {
 693                                         $s .= $context->msg( $msgKey[0] )->parseAsBlock();
 694                                 } else { // Process additional arguments
 695                                         $args = $msgKey;
 696                                         array_shift( $args );
 697                                         $s .= $context->msg( $msgKey[0], $args )->parseAsBlock();
 698                                 }
 699                         }
 700                         $s .= $loglist->beginLogEventsList() .
 701                                 $logBody .
 702                                 $loglist->endLogEventsList();
 703                         // add styles for change tags
 704                         $context->getOutput()->addModuleStyles( 'mediawiki.interface.helpers.styles' );
 705                 } elseif ( $showIfEmpty ) {
 706                         $s = Html::rawElement( 'div', [ 'class' => 'mw-warning-logempty' ],
 707                                 $context->msg( 'logempty' )->parse() );
 708                 }
 709
 710                 if ( $numRows > $pager->mLimit ) { # Show "Full log" link
 711                         $urlParam = [];
 712                         if ( $page instanceof Title ) {
 713                                 $urlParam['page'] = $page->getPrefixedDBkey();
 714                         } elseif ( $page != '' ) {
 715                                 $urlParam['page'] = $page;
 716                         }
 717
 718                         if ( $user != '' ) {
 719                                 $urlParam['user'] = $user;
 720                         }
 721
 722                         if ( !is_array( $types ) ) { # Make it an array, if it isn't
 723                                 $types = [ $types ];
 724                         }
 725
 726                         # If there is exactly one log type, we can link to Special:Log?type=foo
 727                         if ( count( $types ) == 1 ) {
 728                                 $urlParam['type'] = $types[0];
 729                         }
 730
 731                         if ( $extraUrlParams !== false ) {
 732                                 $urlParam = array_merge( $urlParam, $extraUrlParams );
 733                         }
 734
 735                         $s .= $linkRenderer->makeKnownLink(
 736                                 SpecialPage::getTitleFor( 'Log' ),
 737                                 $context->msg( 'log-fulllog' )->text(),
 738                                 [],
 739                                 $urlParam
 740                         );
 741                 }
 742
 743                 if ( $logBody && $msgKey[0] ) {
 744                         $s .= '</div>';
 745                 }
 746
 747                 if ( $wrap != '' ) { // Wrap message in html
 748                         $s = str_replace( '$1', $s, $wrap );
 749                 }
 750
 751                 /* hook can return false, if we don't want the message to be emitted (Wikia BugId:7093) */
 752                 if ( Hooks::run( 'LogEventsListShowLogExtract', [ &$s, $types, $page, $user, $param ] ) ) {
 753                         // $out can be either an OutputPage object or a String-by-reference
 754                         if ( $out instanceof OutputPage ) {
 755                                 $out->addHTML( $s );
 756                         } else {
 757                                 $out = $s;
 758                         }
 759                 }
 760
 761                 return $numRows;
 762         }
 763
 764         /**
 765          * SQL clause to skip forbidden log types for this user
 766          *
 767          * @param IDatabase $db
 768          * @param string $audience Public/user
 769          * @param User|null $user User to check, or null to use $wgUser
 770          * @return string|bool String on success, false on failure.
 771          */
 772         public static function getExcludeClause( $db, $audience = 'public', User $user = null ) {
 773                 global $wgLogRestrictions;
 774
 775                 if ( $audience != 'public' && $user === null ) {
 776                         global $wgUser;
 777                         $user = $wgUser;
 778                 }
 779
 780                 // Reset the array, clears extra "where" clauses when $par is used
 781                 $hiddenLogs = [];
 782
 783                 // Don't show private logs to unprivileged users
 784                 foreach ( $wgLogRestrictions as $logType => $right ) {
 785                         if ( $audience == 'public' || !$user->isAllowed( $right ) ) {
 786                                 $hiddenLogs[] = $logType;
 787                         }
 788                 }
 789                 if ( count( $hiddenLogs ) == 1 ) {
 790                         return 'log_type != ' . $db->addQuotes( $hiddenLogs[0] );
 791                 } elseif ( $hiddenLogs ) {
 792                         return 'log_type NOT IN (' . $db->makeList( $hiddenLogs ) . ')';
 793                 }
 794
 795                 return false;
 796         }
 797 }