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 string $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 array $filter
 105          * @param string $tagFilter Tag to select by default
 106          * @param string $action
 107          */
 108         public function showOptions( $types = [], $user = '', $page = '', $pattern = '', $year = 0,
 109                 $month = 0, $filter = null, $tagFilter = '', $action = null
 110         ) {
 111                 global $wgScript, $wgMiserMode;
 112
 113                 $title = SpecialPage::getTitleFor( 'Log' );
 114
 115                 // For B/C, we take strings, but make sure they are converted...
 116                 $types = ( $types === '' ) ? [] : (array)$types;
 117
 118                 $tagSelector = ChangeTags::buildTagFilterSelector( $tagFilter, false, $this->getContext() );
 119
 120                 $html = Html::hidden( 'title', $title->getPrefixedDBkey() );
 121
 122                 // Basic selectors
 123                 $html .= $this->getTypeMenu( $types ) . "\n";
 124                 $html .= $this->getUserInput( $user ) . "\n";
 125                 $html .= $this->getTitleInput( $page ) . "\n";
 126                 $html .= $this->getExtraInputs( $types ) . "\n";
 127
 128                 // Title pattern, if allowed
 129                 if ( !$wgMiserMode ) {
 130                         $html .= $this->getTitlePattern( $pattern ) . "\n";
 131                 }
 132
 133                 // date menu
 134                 $html .= Xml::tags( 'p', null, Xml::dateMenu( (int)$year, (int)$month ) );
 135
 136                 // Tag filter
 137                 if ( $tagSelector ) {
 138                         $html .= Xml::tags( 'p', null, implode( '&#160;', $tagSelector ) );
 139                 }
 140
 141                 // Filter links
 142                 if ( $filter ) {
 143                         $html .= Xml::tags( 'p', null, $this->getFilterLinks( $filter ) );
 144                 }
 145
 146                 // Action filter
 147                 if ( $action !== null ) {
 148                         $html .= Xml::tags( 'p', null, $this->getActionSelector( $types, $action ) );
 149                 }
 150
 151                 // Submit button
 152                 $html .= Xml::submitButton( $this->msg( 'logeventslist-submit' )->text() );
 153
 154                 // Fieldset
 155                 $html = Xml::fieldset( $this->msg( 'log' )->text(), $html );
 156
 157                 // Form wrapping
 158                 $html = Xml::tags( 'form', [ 'action' => $wgScript, 'method' => 'get' ], $html );
 159
 160                 $this->getOutput()->addHTML( $html );
 161         }
 162
 163         /**
 164          * @param array $filter
 165          * @return string Formatted HTML
 166          */
 167         private function getFilterLinks( $filter ) {
 168                 // show/hide links
 169                 $messages = [ $this->msg( 'show' )->text(), $this->msg( 'hide' )->text() ];
 170                 // Option value -> message mapping
 171                 $links = [];
 172                 $hiddens = ''; // keep track for "go" button
 173                 $linkRenderer = $this->getLinkRenderer();
 174                 foreach ( $filter as $type => $val ) {
 175                         // Should the below assignment be outside the foreach?
 176                         // Then it would have to be copied. Not certain what is more expensive.
 177                         $query = $this->getDefaultQuery();
 178                         $queryKey = "hide_{$type}_log";
 179
 180                         $hideVal = 1 - intval( $val );
 181                         $query[$queryKey] = $hideVal;
 182
 183                         $link = $linkRenderer->makeKnownLink(
 184                                 $this->getTitle(),
 185                                 $messages[$hideVal],
 186                                 [],
 187                                 $query
 188                         );
 189
 190                         // Message: log-show-hide-patrol
 191                         $links[$type] = $this->msg( "log-show-hide-{$type}" )->rawParams( $link )->escaped();
 192                         $hiddens .= Html::hidden( "hide_{$type}_log", $val ) . "\n";
 193                 }
 194
 195                 // Build links
 196                 return '<small>' . $this->getLanguage()->pipeList( $links ) . '</small>' . $hiddens;
 197         }
 198
 199         private function getDefaultQuery() {
 200                 if ( !isset( $this->mDefaultQuery ) ) {
 201                         $this->mDefaultQuery = $this->getRequest()->getQueryValues();
 202                         unset( $this->mDefaultQuery['title'] );
 203                         unset( $this->mDefaultQuery['dir'] );
 204                         unset( $this->mDefaultQuery['offset'] );
 205                         unset( $this->mDefaultQuery['limit'] );
 206                         unset( $this->mDefaultQuery['order'] );
 207                         unset( $this->mDefaultQuery['month'] );
 208                         unset( $this->mDefaultQuery['year'] );
 209                 }
 210
 211                 return $this->mDefaultQuery;
 212         }
 213
 214         /**
 215          * @param array $queryTypes
 216          * @return string Formatted HTML
 217          */
 218         private function getTypeMenu( $queryTypes ) {
 219                 $queryType = count( $queryTypes ) == 1 ? $queryTypes[0] : '';
 220                 $selector = $this->getTypeSelector();
 221                 $selector->setDefault( $queryType );
 222
 223                 return $selector->getHTML();
 224         }
 225
 226         /**
 227          * Returns log page selector.
 228          * @return XmlSelect
 229          * @since 1.19
 230          */
 231         public function getTypeSelector() {
 232                 $typesByName = []; // Temporary array
 233                 // First pass to load the log names
 234                 foreach ( LogPage::validTypes() as $type ) {
 235                         $page = new LogPage( $type );
 236                         $restriction = $page->getRestriction();
 237                         if ( $this->getUser()->isAllowed( $restriction ) ) {
 238                                 $typesByName[$type] = $page->getName()->text();
 239                         }
 240                 }
 241
 242                 // Second pass to sort by name
 243                 asort( $typesByName );
 244
 245                 // Always put "All public logs" on top
 246                 $public = $typesByName[''];
 247                 unset( $typesByName[''] );
 248                 $typesByName = [ '' => $public ] + $typesByName;
 249
 250                 $select = new XmlSelect( 'type' );
 251                 foreach ( $typesByName as $type => $name ) {
 252                         $select->addOption( $name, $type );
 253                 }
 254
 255                 return $select;
 256         }
 257
 258         /**
 259          * @param string $user
 260          * @return string Formatted HTML
 261          */
 262         private function getUserInput( $user ) {
 263                 $label = Xml::inputLabel(
 264                         $this->msg( 'specialloguserlabel' )->text(),
 265                         'user',
 266                         'mw-log-user',
 267                         15,
 268                         $user,
 269                         [ 'class' => 'mw-autocomplete-user' ]
 270                 );
 271
 272                 return '<span class="mw-input-with-label">' . $label . '</span>';
 273         }
 274
 275         /**
 276          * @param string $title
 277          * @return string Formatted HTML
 278          */
 279         private function getTitleInput( $title ) {
 280                 $label = Xml::inputLabel(
 281                         $this->msg( 'speciallogtitlelabel' )->text(),
 282                         'page',
 283                         'mw-log-page',
 284                         20,
 285                         $title
 286                 );
 287
 288                 return '<span class="mw-input-with-label">' . $label .  '</span>';
 289         }
 290
 291         /**
 292          * @param string $pattern
 293          * @return string Checkbox
 294          */
 295         private function getTitlePattern( $pattern ) {
 296                 return '<span class="mw-input-with-label">' .
 297                         Xml::checkLabel( $this->msg( 'log-title-wildcard' )->text(), 'pattern', 'pattern', $pattern ) .
 298                         '</span>';
 299         }
 300
 301         /**
 302          * @param array $types
 303          * @return string
 304          */
 305         private function getExtraInputs( $types ) {
 306                 if ( count( $types ) == 1 ) {
 307                         if ( $types[0] == 'suppress' ) {
 308                                 $offender = $this->getRequest()->getVal( 'offender' );
 309                                 $user = User::newFromName( $offender, false );
 310                                 if ( !$user || ( $user->getId() == 0 && !IP::isIPAddress( $offender ) ) ) {
 311                                         $offender = ''; // Blank field if invalid
 312                                 }
 313                                 return Xml::inputLabel( $this->msg( 'revdelete-offender' )->text(), 'offender',
 314                                         'mw-log-offender', 20, $offender );
 315                         } else {
 316                                 // Allow extensions to add their own extra inputs
 317                                 $input = '';
 318                                 Hooks::run( 'LogEventsListGetExtraInputs', [ $types[0], $this, &$input ] );
 319                                 return $input;
 320                         }
 321                 }
 322
 323                 return '';
 324         }
 325
 326         /**
 327          * Drop down menu for selection of actions that can be used to filter the log
 328          * @param array $types
 329          * @param string $action
 330          * @return string
 331          * @since 1.27
 332          */
 333         private function getActionSelector( $types, $action ) {
 334                 if ( $this->allowedActions === null || !count( $this->allowedActions ) ) {
 335                         return '';
 336                 }
 337                 $html = '';
 338                 $html .= Xml::label( wfMessage( 'log-action-filter-' . $types[0] )->text(),
 339                         'action-filter-' .$types[0] ) . "\n";
 340                 $select = new XmlSelect( 'subtype' );
 341                 $select->addOption( wfMessage( 'log-action-filter-all' )->text(), '' );
 342                 foreach ( $this->allowedActions as $value ) {
 343                         $msgKey = 'log-action-filter-' . $types[0] . '-' . $value;
 344                         $select->addOption( wfMessage( $msgKey )->text(), $value );
 345                 }
 346                 $select->setDefault( $action );
 347                 $html .= $select->getHTML();
 348                 return $html;
 349         }
 350
 351         /**
 352          * Sets the action types allowed for log filtering
 353          * To one action type may correspond several log_actions
 354          * @param array $actions
 355          * @since 1.27
 356          */
 357         public function setAllowedActions( $actions ) {
 358                 $this->allowedActions = $actions;
 359         }
 360
 361         /**
 362          * @return string
 363          */
 364         public function beginLogEventsList() {
 365                 return "<ul>\n";
 366         }
 367
 368         /**
 369          * @return string
 370          */
 371         public function endLogEventsList() {
 372                 return "</ul>\n";
 373         }
 374
 375         /**
 376          * @param stdClass $row A single row from the result set
 377          * @return string Formatted HTML list item
 378          */
 379         public function logLine( $row ) {
 380                 $entry = DatabaseLogEntry::newFromRow( $row );
 381                 $formatter = LogFormatter::newFromEntry( $entry );
 382                 $formatter->setContext( $this->getContext() );
 383                 $formatter->setLinkRenderer( $this->getLinkRenderer() );
 384                 $formatter->setShowUserToolLinks( !( $this->flags & self::NO_EXTRA_USER_LINKS ) );
 385
 386                 $time = htmlspecialchars( $this->getLanguage()->userTimeAndDate(
 387                         $entry->getTimestamp(), $this->getUser() ) );
 388
 389                 $action = $formatter->getActionText();
 390
 391                 if ( $this->flags & self::NO_ACTION_LINK ) {
 392                         $revert = '';
 393                 } else {
 394                         $revert = $formatter->getActionLinks();
 395                         if ( $revert != '' ) {
 396                                 $revert = '<span class="mw-logevent-actionlink">' . $revert . '</span>';
 397                         }
 398                 }
 399
 400                 $comment = $formatter->getComment();
 401
 402                 // Some user can hide log items and have review links
 403                 $del = $this->getShowHideLinks( $row );
 404
 405                 // Any tags...
 406                 list( $tagDisplay, $newClasses ) = ChangeTags::formatSummaryRow(
 407                         $row->ts_tags,
 408                         'logevent',
 409                         $this->getContext()
 410                 );
 411                 $classes = array_merge(
 412                         [ 'mw-logline-' . $entry->getType() ],
 413                         $newClasses
 414                 );
 415                 $attribs = [
 416                         'data-mw-logid' => $entry->getId(),
 417                         'data-mw-logaction' => $entry->getFullType(),
 418                 ];
 419                 $ret = "$del $time $action $comment $revert $tagDisplay";
 420
 421                 // Let extensions add data
 422                 Hooks::run( 'LogEventsListLineEnding', [ $this, &$ret, $entry, &$classes, &$attribs ] );
 423                 $attribs = wfArrayFilterByKey( $attribs, [ Sanitizer::class, 'isReservedDataAttribute' ] );
 424                 $attribs['class'] = implode( ' ', $classes );
 425
 426                 return Html::rawElement( 'li', $attribs, $ret ) . "\n";
 427         }
 428
 429         /**
 430          * @param stdClass $row
 431          * @return string
 432          */
 433         private function getShowHideLinks( $row ) {
 434                 // We don't want to see the links and
 435                 if ( $this->flags == self::NO_ACTION_LINK ) {
 436                         return '';
 437                 }
 438
 439                 $user = $this->getUser();
 440
 441                 // If change tag editing is available to this user, return the checkbox
 442                 if ( $this->flags & self::USE_CHECKBOXES && $this->showTagEditUI ) {
 443                         return Xml::check(
 444                                 'showhiderevisions',
 445                                 false,
 446                                 [ 'name' => 'ids[' . $row->log_id . ']' ]
 447                         );
 448                 }
 449
 450                 // no one can hide items from the suppress log.
 451                 if ( $row->log_type == 'suppress' ) {
 452                         return '';
 453                 }
 454
 455                 $del = '';
 456                 // Don't show useless checkbox to people who cannot hide log entries
 457                 if ( $user->isAllowed( 'deletedhistory' ) ) {
 458                         $canHide = $user->isAllowed( 'deletelogentry' );
 459                         $canViewSuppressedOnly = $user->isAllowed( 'viewsuppressed' ) &&
 460                                 !$user->isAllowed( 'suppressrevision' );
 461                         $entryIsSuppressed = self::isDeleted( $row, LogPage::DELETED_RESTRICTED );
 462                         $canViewThisSuppressedEntry = $canViewSuppressedOnly && $entryIsSuppressed;
 463                         if ( $row->log_deleted || $canHide ) {
 464                                 // Show checkboxes instead of links.
 465                                 if ( $canHide && $this->flags & self::USE_CHECKBOXES && !$canViewThisSuppressedEntry ) {
 466                                         // If event was hidden from sysops
 467                                         if ( !self::userCan( $row, LogPage::DELETED_RESTRICTED, $user ) ) {
 468                                                 $del = Xml::check( 'deleterevisions', false, [ 'disabled' => 'disabled' ] );
 469                                         } else {
 470                                                 $del = Xml::check(
 471                                                         'showhiderevisions',
 472                                                         false,
 473                                                         [ 'name' => 'ids[' . $row->log_id . ']' ]
 474                                                 );
 475                                         }
 476                                 } else {
 477                                         // If event was hidden from sysops
 478                                         if ( !self::userCan( $row, LogPage::DELETED_RESTRICTED, $user ) ) {
 479                                                 $del = Linker::revDeleteLinkDisabled( $canHide );
 480                                         } else {
 481                                                 $query = [
 482                                                         'target' => SpecialPage::getTitleFor( 'Log', $row->log_type )->getPrefixedDBkey(),
 483                                                         'type' => 'logging',
 484                                                         'ids' => $row->log_id,
 485                                                 ];
 486                                                 $del = Linker::revDeleteLink(
 487                                                         $query,
 488                                                         $entryIsSuppressed,
 489                                                         $canHide && !$canViewThisSuppressedEntry
 490                                                 );
 491                                         }
 492                                 }
 493                         }
 494                 }
 495
 496                 return $del;
 497         }
 498
 499         /**
 500          * @param stdClass $row
 501          * @param string|array $type
 502          * @param string|array $action
 503          * @param string $right
 504          * @return bool
 505          */
 506         public static function typeAction( $row, $type, $action, $right = '' ) {
 507                 $match = is_array( $type ) ?
 508                         in_array( $row->log_type, $type ) : $row->log_type == $type;
 509                 if ( $match ) {
 510                         $match = is_array( $action ) ?
 511                                 in_array( $row->log_action, $action ) : $row->log_action == $action;
 512                         if ( $match && $right ) {
 513                                 global $wgUser;
 514                                 $match = $wgUser->isAllowed( $right );
 515                         }
 516                 }
 517
 518                 return $match;
 519         }
 520
 521         /**
 522          * Determine if the current user is allowed to view a particular
 523          * field of this log row, if it's marked as deleted and/or restricted log type.
 524          *
 525          * @param stdClass $row
 526          * @param int $field
 527          * @param User $user User to check, or null to use $wgUser
 528          * @return bool
 529          */
 530         public static function userCan( $row, $field, User $user = null ) {
 531                 return self::userCanBitfield( $row->log_deleted, $field, $user ) &&
 532                         self::userCanViewLogType( $row->log_type, $user );
 533         }
 534
 535         /**
 536          * Determine if the current user is allowed to view a particular
 537          * field of this log row, if it's marked as deleted.
 538          *
 539          * @param int $bitfield Current field
 540          * @param int $field
 541          * @param User $user User to check, or null to use $wgUser
 542          * @return bool
 543          */
 544         public static function userCanBitfield( $bitfield, $field, User $user = null ) {
 545                 if ( $bitfield & $field ) {
 546                         if ( $user === null ) {
 547                                 global $wgUser;
 548                                 $user = $wgUser;
 549                         }
 550                         if ( $bitfield & LogPage::DELETED_RESTRICTED ) {
 551                                 $permissions = [ 'suppressrevision', 'viewsuppressed' ];
 552                         } else {
 553                                 $permissions = [ 'deletedhistory' ];
 554                         }
 555                         $permissionlist = implode( ', ', $permissions );
 556                         wfDebug( "Checking for $permissionlist due to $field match on $bitfield\n" );
 557                         return call_user_func_array( [ $user, 'isAllowedAny' ], $permissions );
 558                 }
 559                 return true;
 560         }
 561
 562         /**
 563          * Determine if the current user is allowed to view a particular
 564          * field of this log row, if it's marked as restricted log type.
 565          *
 566          * @param stdClass $type
 567          * @param User|null $user User to check, or null to use $wgUser
 568          * @return bool
 569          */
 570         public static function userCanViewLogType( $type, User $user = null ) {
 571                 if ( $user === null ) {
 572                         global $wgUser;
 573                         $user = $wgUser;
 574                 }
 575                 $logRestrictions = MediaWikiServices::getInstance()->getMainConfig()->get( 'LogRestrictions' );
 576                 if ( isset( $logRestrictions[$type] ) && !$user->isAllowed( $logRestrictions[$type] ) ) {
 577                         return false;
 578                 }
 579                 return true;
 580         }
 581
 582         /**
 583          * @param stdClass $row
 584          * @param int $field One of DELETED_* bitfield constants
 585          * @return bool
 586          */
 587         public static function isDeleted( $row, $field ) {
 588                 return ( $row->log_deleted & $field ) == $field;
 589         }
 590
 591         /**
 592          * Show log extract. Either with text and a box (set $msgKey) or without (don't set $msgKey)
 593          *
 594          * @param OutputPage|string &$out
 595          * @param string|array $types Log types to show
 596          * @param string|Title $page The page title to show log entries for
 597          * @param string $user The user who made the log entries
 598          * @param array $param Associative Array with the following additional options:
 599          * - lim Integer Limit of items to show, default is 50
 600          * - conds Array Extra conditions for the query
 601          *   (e.g. 'log_action != ' . $dbr->addQuotes( 'revision' ))
 602          * - showIfEmpty boolean Set to false if you don't want any output in case the loglist is empty
 603          *   if set to true (default), "No matching items in log" is displayed if loglist is empty
 604          * - msgKey Array If you want a nice box with a message, set this to the key of the message.
 605          *   First element is the message key, additional optional elements are parameters for the key
 606          *   that are processed with wfMessage
 607          * - offset Set to overwrite offset parameter in WebRequest
 608          *   set to '' to unset offset
 609          * - wrap String Wrap the message in html (usually something like "<div ...>$1</div>").
 610          * - flags Integer display flags (NO_ACTION_LINK,NO_EXTRA_USER_LINKS)
 611          * - useRequestParams boolean Set true to use Pager-related parameters in the WebRequest
 612          * - useMaster boolean Use master DB
 613          * - extraUrlParams array|bool Additional url parameters for "full log" link (if it is shown)
 614          * @return int Number of total log items (not limited by $lim)
 615          */
 616         public static function showLogExtract(
 617                 &$out, $types = [], $page = '', $user = '', $param = []
 618         ) {
 619                 $defaultParameters = [
 620                         'lim' => 25,
 621                         'conds' => [],
 622                         'showIfEmpty' => true,
 623                         'msgKey' => [ '' ],
 624                         'wrap' => "$1",
 625                         'flags' => 0,
 626                         'useRequestParams' => false,
 627                         'useMaster' => false,
 628                         'extraUrlParams' => false,
 629                 ];
 630                 # The + operator appends elements of remaining keys from the right
 631                 # handed array to the left handed, whereas duplicated keys are NOT overwritten.
 632                 $param += $defaultParameters;
 633                 # Convert $param array to individual variables
 634                 $lim = $param['lim'];
 635                 $conds = $param['conds'];
 636                 $showIfEmpty = $param['showIfEmpty'];
 637                 $msgKey = $param['msgKey'];
 638                 $wrap = $param['wrap'];
 639                 $flags = $param['flags'];
 640                 $extraUrlParams = $param['extraUrlParams'];
 641
 642                 $useRequestParams = $param['useRequestParams'];
 643                 if ( !is_array( $msgKey ) ) {
 644                         $msgKey = [ $msgKey ];
 645                 }
 646
 647                 if ( $out instanceof OutputPage ) {
 648                         $context = $out->getContext();
 649                 } else {
 650                         $context = RequestContext::getMain();
 651                 }
 652
 653                 // FIXME: Figure out how to inject this
 654                 $linkRenderer = MediaWikiServices::getInstance()->getLinkRenderer();
 655
 656                 # Insert list of top 50 (or top $lim) items
 657                 $loglist = new LogEventsList( $context, $linkRenderer, $flags );
 658                 $pager = new LogPager( $loglist, $types, $user, $page, '', $conds );
 659                 if ( !$useRequestParams ) {
 660                         # Reset vars that may have been taken from the request
 661                         $pager->mLimit = 50;
 662                         $pager->mDefaultLimit = 50;
 663                         $pager->mOffset = "";
 664                         $pager->mIsBackwards = false;
 665                 }
 666
 667                 if ( $param['useMaster'] ) {
 668                         $pager->mDb = wfGetDB( DB_MASTER );
 669                 }
 670                 if ( isset( $param['offset'] ) ) { # Tell pager to ignore WebRequest offset
 671                         $pager->setOffset( $param['offset'] );
 672                 }
 673
 674                 if ( $lim > 0 ) {
 675                         $pager->mLimit = $lim;
 676                 }
 677                 // Fetch the log rows and build the HTML if needed
 678                 $logBody = $pager->getBody();
 679                 $numRows = $pager->getNumRows();
 680
 681                 $s = '';
 682
 683                 if ( $logBody ) {
 684                         if ( $msgKey[0] ) {
 685                                 $dir = $context->getLanguage()->getDir();
 686                                 $lang = $context->getLanguage()->getHtmlCode();
 687
 688                                 $s = Xml::openElement( 'div', [
 689                                         'class' => "mw-warning-with-logexcerpt mw-content-$dir",
 690                                         'dir' => $dir,
 691                                         'lang' => $lang,
 692                                 ] );
 693
 694                                 if ( count( $msgKey ) == 1 ) {
 695                                         $s .= $context->msg( $msgKey[0] )->parseAsBlock();
 696                                 } else { // Process additional arguments
 697                                         $args = $msgKey;
 698                                         array_shift( $args );
 699                                         $s .= $context->msg( $msgKey[0], $args )->parseAsBlock();
 700                                 }
 701                         }
 702                         $s .= $loglist->beginLogEventsList() .
 703                                 $logBody .
 704                                 $loglist->endLogEventsList();
 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 $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 }