includes/logging/LogEventsList.php

   1 <?php
   2 /**
   3  * Contain classes to list log entries
   4  *
   5  * Copyright © 2004 Brion Vibber <brion@pobox.com>, 2008 Aaron Schulz
   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 class LogEventsList extends ContextSource {
  27         const NO_ACTION_LINK = 1;
  28         const NO_EXTRA_USER_LINKS = 2;
  29         const USE_CHECKBOXES = 4;
  30
  31         public $flags;
  32
  33         /**
  34          * @var array
  35          */
  36         protected $mDefaultQuery;
  37
  38         /**
  39          * @var bool
  40          */
  41         protected $showTagEditUI;
  42
  43         /**
  44          * @var array
  45          */
  46         protected $allowedActions = null;
  47
  48         /**
  49          * Constructor.
  50          * The first two parameters used to be $skin and $out, but now only a context
  51          * is needed, that's why there's a second unused parameter.
  52          *
  53          * @param IContextSource|Skin $context Context to use; formerly it was
  54          *   a Skin object. Use of Skin is deprecated.
  55          * @param null $unused Unused; used to be an OutputPage object.
  56          * @param int $flags Can be a combination of self::NO_ACTION_LINK,
  57          *   self::NO_EXTRA_USER_LINKS or self::USE_CHECKBOXES.
  58          */
  59         public function __construct( $context, $unused = null, $flags = 0 ) {
  60                 if ( $context instanceof IContextSource ) {
  61                         $this->setContext( $context );
  62                 } else {
  63                         // Old parameters, $context should be a Skin object
  64                         $this->setContext( $context->getContext() );
  65                 }
  66
  67                 $this->flags = $flags;
  68                 $this->showTagEditUI = ChangeTags::showTagEditingUI( $this->getUser() );
  69         }
  70
  71         /**
  72          * Show options for the log list
  73          *
  74          * @param array|string $types
  75          * @param string $user
  76          * @param string $page
  77          * @param string $pattern
  78          * @param int $year Year
  79          * @param int $month Month
  80          * @param array $filter
  81          * @param string $tagFilter Tag to select by default
  82          * @param string $action
  83          */
  84         public function showOptions( $types = [], $user = '', $page = '', $pattern = '', $year = 0,
  85                 $month = 0, $filter = null, $tagFilter = '', $action = null
  86         ) {
  87                 global $wgScript, $wgMiserMode;
  88
  89                 $title = SpecialPage::getTitleFor( 'Log' );
  90
  91                 // For B/C, we take strings, but make sure they are converted...
  92                 $types = ( $types === '' ) ? [] : (array)$types;
  93
  94                 $tagSelector = ChangeTags::buildTagFilterSelector( $tagFilter );
  95
  96                 $html = Html::hidden( 'title', $title->getPrefixedDBkey() );
  97
  98                 // Basic selectors
  99                 $html .= $this->getTypeMenu( $types ) . "\n";
 100                 $html .= $this->getUserInput( $user ) . "\n";
 101                 $html .= $this->getTitleInput( $page ) . "\n";
 102                 $html .= $this->getExtraInputs( $types ) . "\n";
 103
 104                 // Title pattern, if allowed
 105                 if ( !$wgMiserMode ) {
 106                         $html .= $this->getTitlePattern( $pattern ) . "\n";
 107                 }
 108
 109                 // date menu
 110                 $html .= Xml::tags( 'p', null, Xml::dateMenu( (int)$year, (int)$month ) );
 111
 112                 // Tag filter
 113                 if ( $tagSelector ) {
 114                         $html .= Xml::tags( 'p', null, implode( '&#160;', $tagSelector ) );
 115                 }
 116
 117                 // Filter links
 118                 if ( $filter ) {
 119                         $html .= Xml::tags( 'p', null, $this->getFilterLinks( $filter ) );
 120                 }
 121
 122                 // Action filter
 123                 if ( $action !== null ) {
 124                         $html .= Xml::tags( 'p', null, $this->getActionSelector( $types, $action ) );
 125                 }
 126
 127                 // Submit button
 128                 $html .= Xml::submitButton( $this->msg( 'logeventslist-submit' )->text() );
 129
 130                 // Fieldset
 131                 $html = Xml::fieldset( $this->msg( 'log' )->text(), $html );
 132
 133                 // Form wrapping
 134                 $html = Xml::tags( 'form', [ 'action' => $wgScript, 'method' => 'get' ], $html );
 135
 136                 $this->getOutput()->addHTML( $html );
 137         }
 138
 139         /**
 140          * @param array $filter
 141          * @return string Formatted HTML
 142          */
 143         private function getFilterLinks( $filter ) {
 144                 // show/hide links
 145                 $messages = [ $this->msg( 'show' )->escaped(), $this->msg( 'hide' )->escaped() ];
 146                 // Option value -> message mapping
 147                 $links = [];
 148                 $hiddens = ''; // keep track for "go" button
 149                 foreach ( $filter as $type => $val ) {
 150                         // Should the below assignment be outside the foreach?
 151                         // Then it would have to be copied. Not certain what is more expensive.
 152                         $query = $this->getDefaultQuery();
 153                         $queryKey = "hide_{$type}_log";
 154
 155                         $hideVal = 1 - intval( $val );
 156                         $query[$queryKey] = $hideVal;
 157
 158                         $link = Linker::linkKnown(
 159                                 $this->getTitle(),
 160                                 $messages[$hideVal],
 161                                 [],
 162                                 $query
 163                         );
 164
 165                         // Message: log-show-hide-patrol
 166                         $links[$type] = $this->msg( "log-show-hide-{$type}" )->rawParams( $link )->escaped();
 167                         $hiddens .= Html::hidden( "hide_{$type}_log", $val ) . "\n";
 168                 }
 169
 170                 // Build links
 171                 return '<small>' . $this->getLanguage()->pipeList( $links ) . '</small>' . $hiddens;
 172         }
 173
 174         private function getDefaultQuery() {
 175                 if ( !isset( $this->mDefaultQuery ) ) {
 176                         $this->mDefaultQuery = $this->getRequest()->getQueryValues();
 177                         unset( $this->mDefaultQuery['title'] );
 178                         unset( $this->mDefaultQuery['dir'] );
 179                         unset( $this->mDefaultQuery['offset'] );
 180                         unset( $this->mDefaultQuery['limit'] );
 181                         unset( $this->mDefaultQuery['order'] );
 182                         unset( $this->mDefaultQuery['month'] );
 183                         unset( $this->mDefaultQuery['year'] );
 184                 }
 185
 186                 return $this->mDefaultQuery;
 187         }
 188
 189         /**
 190          * @param array $queryTypes
 191          * @return string Formatted HTML
 192          */
 193         private function getTypeMenu( $queryTypes ) {
 194                 $queryType = count( $queryTypes ) == 1 ? $queryTypes[0] : '';
 195                 $selector = $this->getTypeSelector();
 196                 $selector->setDefault( $queryType );
 197
 198                 return $selector->getHTML();
 199         }
 200
 201         /**
 202          * Returns log page selector.
 203          * @return XmlSelect
 204          * @since 1.19
 205          */
 206         public function getTypeSelector() {
 207                 $typesByName = []; // Temporary array
 208                 // First pass to load the log names
 209                 foreach ( LogPage::validTypes() as $type ) {
 210                         $page = new LogPage( $type );
 211                         $restriction = $page->getRestriction();
 212                         if ( $this->getUser()->isAllowed( $restriction ) ) {
 213                                 $typesByName[$type] = $page->getName()->text();
 214                         }
 215                 }
 216
 217                 // Second pass to sort by name
 218                 asort( $typesByName );
 219
 220                 // Always put "All public logs" on top
 221                 $public = $typesByName[''];
 222                 unset( $typesByName[''] );
 223                 $typesByName = [ '' => $public ] + $typesByName;
 224
 225                 $select = new XmlSelect( 'type' );
 226                 foreach ( $typesByName as $type => $name ) {
 227                         $select->addOption( $name, $type );
 228                 }
 229
 230                 return $select;
 231         }
 232
 233         /**
 234          * @param string $user
 235          * @return string Formatted HTML
 236          */
 237         private function getUserInput( $user ) {
 238                 $label = Xml::inputLabel(
 239                         $this->msg( 'specialloguserlabel' )->text(),
 240                         'user',
 241                         'mw-log-user',
 242                         15,
 243                         $user,
 244                         [ 'class' => 'mw-autocomplete-user' ]
 245                 );
 246
 247                 return '<span class="mw-input-with-label">' . $label . '</span>';
 248         }
 249
 250         /**
 251          * @param string $title
 252          * @return string Formatted HTML
 253          */
 254         private function getTitleInput( $title ) {
 255                 $label = Xml::inputLabel(
 256                         $this->msg( 'speciallogtitlelabel' )->text(),
 257                         'page',
 258                         'mw-log-page',
 259                         20,
 260                         $title
 261                 );
 262
 263                 return '<span class="mw-input-with-label">' . $label .  '</span>';
 264         }
 265
 266         /**
 267          * @param string $pattern
 268          * @return string Checkbox
 269          */
 270         private function getTitlePattern( $pattern ) {
 271                 return '<span class="mw-input-with-label">' .
 272                         Xml::checkLabel( $this->msg( 'log-title-wildcard' )->text(), 'pattern', 'pattern', $pattern ) .
 273                         '</span>';
 274         }
 275
 276         /**
 277          * @param array $types
 278          * @return string
 279          */
 280         private function getExtraInputs( $types ) {
 281                 if ( count( $types ) == 1 ) {
 282                         if ( $types[0] == 'suppress' ) {
 283                                 $offender = $this->getRequest()->getVal( 'offender' );
 284                                 $user = User::newFromName( $offender, false );
 285                                 if ( !$user || ( $user->getId() == 0 && !IP::isIPAddress( $offender ) ) ) {
 286                                         $offender = ''; // Blank field if invalid
 287                                 }
 288                                 return Xml::inputLabel( $this->msg( 'revdelete-offender' )->text(), 'offender',
 289                                         'mw-log-offender', 20, $offender );
 290                         } else {
 291                                 // Allow extensions to add their own extra inputs
 292                                 $input = '';
 293                                 Hooks::run( 'LogEventsListGetExtraInputs', [ $types[0], $this, &$input ] );
 294                                 return $input;
 295                         }
 296                 }
 297
 298                 return '';
 299         }
 300
 301         /**
 302          * Drop down menu for selection of actions that can be used to filter the log
 303          * @param array $types
 304          * @param string $action
 305          * @return string
 306          * @since 1.27
 307          */
 308         private function getActionSelector( $types, $action ) {
 309                 if ( $this->allowedActions === null || !count( $this->allowedActions ) ) {
 310                         return '';
 311                 }
 312                 $html = '';
 313                 $html .= Xml::label( wfMessage( 'log-action-filter-' . $types[0] )->text(),
 314                         'action-filter-' .$types[0] ) . "\n";
 315                 $select = new XmlSelect( 'subtype' );
 316                 $select->addOption( wfMessage( 'log-action-filter-all' )->text(), '' );
 317                 foreach ( $this->allowedActions as $value ) {
 318                         $msgKey = 'log-action-filter-' . $types[0] . '-' . $value;
 319                         $select->addOption( wfMessage( $msgKey )->text(), $value );
 320                 }
 321                 $select->setDefault( $action );
 322                 $html .= $select->getHTML();
 323                 return $html;
 324         }
 325
 326         /**
 327          * Sets the action types allowed for log filtering
 328          * To one action type may correspond several log_actions
 329          * @param array $actions
 330          * @since 1.27
 331          */
 332         public function setAllowedActions( $actions ) {
 333                 $this->allowedActions = $actions;
 334         }
 335
 336         /**
 337          * @return string
 338          */
 339         public function beginLogEventsList() {
 340                 return "<ul>\n";
 341         }
 342
 343         /**
 344          * @return string
 345          */
 346         public function endLogEventsList() {
 347                 return "</ul>\n";
 348         }
 349
 350         /**
 351          * @param stdClass $row A single row from the result set
 352          * @return string Formatted HTML list item
 353          */
 354         public function logLine( $row ) {
 355                 $entry = DatabaseLogEntry::newFromRow( $row );
 356                 $formatter = LogFormatter::newFromEntry( $entry );
 357                 $formatter->setContext( $this->getContext() );
 358                 $formatter->setShowUserToolLinks( !( $this->flags & self::NO_EXTRA_USER_LINKS ) );
 359
 360                 $time = htmlspecialchars( $this->getLanguage()->userTimeAndDate(
 361                         $entry->getTimestamp(), $this->getUser() ) );
 362
 363                 $action = $formatter->getActionText();
 364
 365                 if ( $this->flags & self::NO_ACTION_LINK ) {
 366                         $revert = '';
 367                 } else {
 368                         $revert = $formatter->getActionLinks();
 369                         if ( $revert != '' ) {
 370                                 $revert = '<span class="mw-logevent-actionlink">' . $revert . '</span>';
 371                         }
 372                 }
 373
 374                 $comment = $formatter->getComment();
 375
 376                 // Some user can hide log items and have review links
 377                 $del = $this->getShowHideLinks( $row );
 378
 379                 // Any tags...
 380                 list( $tagDisplay, $newClasses ) = ChangeTags::formatSummaryRow(
 381                         $row->ts_tags,
 382                         'logevent',
 383                         $this->getContext()
 384                 );
 385                 $classes = array_merge(
 386                         [ 'mw-logline-' . $entry->getType() ],
 387                         $newClasses
 388                 );
 389
 390                 return Html::rawElement( 'li', [ 'class' => $classes ],
 391                         "$del $time $action $comment $revert $tagDisplay" ) . "\n";
 392         }
 393
 394         /**
 395          * @param stdClass $row Row
 396          * @return string
 397          */
 398         private function getShowHideLinks( $row ) {
 399                 // We don't want to see the links and
 400                 if ( $this->flags == self::NO_ACTION_LINK ) {
 401                         return '';
 402                 }
 403
 404                 $user = $this->getUser();
 405
 406                 // If change tag editing is available to this user, return the checkbox
 407                 if ( $this->flags & self::USE_CHECKBOXES && $this->showTagEditUI ) {
 408                         return Xml::check(
 409                                 'showhiderevisions',
 410                                 false,
 411                                 [ 'name' => 'ids[' . $row->log_id . ']' ]
 412                         );
 413                 }
 414
 415                 // no one can hide items from the suppress log.
 416                 if ( $row->log_type == 'suppress' ) {
 417                         return '';
 418                 }
 419
 420                 $del = '';
 421                 // Don't show useless checkbox to people who cannot hide log entries
 422                 if ( $user->isAllowed( 'deletedhistory' ) ) {
 423                         $canHide = $user->isAllowed( 'deletelogentry' );
 424                         $canViewSuppressedOnly = $user->isAllowed( 'viewsuppressed' ) &&
 425                                 !$user->isAllowed( 'suppressrevision' );
 426                         $entryIsSuppressed = self::isDeleted( $row, LogPage::DELETED_RESTRICTED );
 427                         $canViewThisSuppressedEntry = $canViewSuppressedOnly && $entryIsSuppressed;
 428                         if ( $row->log_deleted || $canHide ) {
 429                                 // Show checkboxes instead of links.
 430                                 if ( $canHide && $this->flags & self::USE_CHECKBOXES && !$canViewThisSuppressedEntry ) {
 431                                         // If event was hidden from sysops
 432                                         if ( !self::userCan( $row, LogPage::DELETED_RESTRICTED, $user ) ) {
 433                                                 $del = Xml::check( 'deleterevisions', false, [ 'disabled' => 'disabled' ] );
 434                                         } else {
 435                                                 $del = Xml::check(
 436                                                         'showhiderevisions',
 437                                                         false,
 438                                                         [ 'name' => 'ids[' . $row->log_id . ']' ]
 439                                                 );
 440                                         }
 441                                 } else {
 442                                         // If event was hidden from sysops
 443                                         if ( !self::userCan( $row, LogPage::DELETED_RESTRICTED, $user ) ) {
 444                                                 $del = Linker::revDeleteLinkDisabled( $canHide );
 445                                         } else {
 446                                                 $query = [
 447                                                         'target' => SpecialPage::getTitleFor( 'Log', $row->log_type )->getPrefixedDBkey(),
 448                                                         'type' => 'logging',
 449                                                         'ids' => $row->log_id,
 450                                                 ];
 451                                                 $del = Linker::revDeleteLink(
 452                                                         $query,
 453                                                         $entryIsSuppressed,
 454                                                         $canHide && !$canViewThisSuppressedEntry
 455                                                 );
 456                                         }
 457                                 }
 458                         }
 459                 }
 460
 461                 return $del;
 462         }
 463
 464         /**
 465          * @param stdClass $row Row
 466          * @param string|array $type
 467          * @param string|array $action
 468          * @param string $right
 469          * @return bool
 470          */
 471         public static function typeAction( $row, $type, $action, $right = '' ) {
 472                 $match = is_array( $type ) ?
 473                         in_array( $row->log_type, $type ) : $row->log_type == $type;
 474                 if ( $match ) {
 475                         $match = is_array( $action ) ?
 476                                 in_array( $row->log_action, $action ) : $row->log_action == $action;
 477                         if ( $match && $right ) {
 478                                 global $wgUser;
 479                                 $match = $wgUser->isAllowed( $right );
 480                         }
 481                 }
 482
 483                 return $match;
 484         }
 485
 486         /**
 487          * Determine if the current user is allowed to view a particular
 488          * field of this log row, if it's marked as deleted.
 489          *
 490          * @param stdClass $row Row
 491          * @param int $field
 492          * @param User $user User to check, or null to use $wgUser
 493          * @return bool
 494          */
 495         public static function userCan( $row, $field, User $user = null ) {
 496                 return self::userCanBitfield( $row->log_deleted, $field, $user );
 497         }
 498
 499         /**
 500          * Determine if the current user is allowed to view a particular
 501          * field of this log row, if it's marked as deleted.
 502          *
 503          * @param int $bitfield Current field
 504          * @param int $field
 505          * @param User $user User to check, or null to use $wgUser
 506          * @return bool
 507          */
 508         public static function userCanBitfield( $bitfield, $field, User $user = null ) {
 509                 if ( $bitfield & $field ) {
 510                         if ( $user === null ) {
 511                                 global $wgUser;
 512                                 $user = $wgUser;
 513                         }
 514                         if ( $bitfield & LogPage::DELETED_RESTRICTED ) {
 515                                 $permissions = [ 'suppressrevision', 'viewsuppressed' ];
 516                         } else {
 517                                 $permissions = [ 'deletedhistory' ];
 518                         }
 519                         $permissionlist = implode( ', ', $permissions );
 520                         wfDebug( "Checking for $permissionlist due to $field match on $bitfield\n" );
 521                         return call_user_func_array( [ $user, 'isAllowedAny' ], $permissions );
 522                 }
 523                 return true;
 524         }
 525
 526         /**
 527          * @param stdClass $row Row
 528          * @param int $field One of DELETED_* bitfield constants
 529          * @return bool
 530          */
 531         public static function isDeleted( $row, $field ) {
 532                 return ( $row->log_deleted & $field ) == $field;
 533         }
 534
 535         /**
 536          * Show log extract. Either with text and a box (set $msgKey) or without (don't set $msgKey)
 537          *
 538          * @param OutputPage|string $out By-reference
 539          * @param string|array $types Log types to show
 540          * @param string|Title $page The page title to show log entries for
 541          * @param string $user The user who made the log entries
 542          * @param array $param Associative Array with the following additional options:
 543          * - lim Integer Limit of items to show, default is 50
 544          * - conds Array Extra conditions for the query (e.g. "log_action != 'revision'")
 545          * - showIfEmpty boolean Set to false if you don't want any output in case the loglist is empty
 546          *   if set to true (default), "No matching items in log" is displayed if loglist is empty
 547          * - msgKey Array If you want a nice box with a message, set this to the key of the message.
 548          *   First element is the message key, additional optional elements are parameters for the key
 549          *   that are processed with wfMessage
 550          * - offset Set to overwrite offset parameter in WebRequest
 551          *   set to '' to unset offset
 552          * - wrap String Wrap the message in html (usually something like "<div ...>$1</div>").
 553          * - flags Integer display flags (NO_ACTION_LINK,NO_EXTRA_USER_LINKS)
 554          * - useRequestParams boolean Set true to use Pager-related parameters in the WebRequest
 555          * - useMaster boolean Use master DB
 556          * - extraUrlParams array|bool Additional url parameters for "full log" link (if it is shown)
 557          * @return int Number of total log items (not limited by $lim)
 558          */
 559         public static function showLogExtract(
 560                 &$out, $types = [], $page = '', $user = '', $param = []
 561         ) {
 562                 $defaultParameters = [
 563                         'lim' => 25,
 564                         'conds' => [],
 565                         'showIfEmpty' => true,
 566                         'msgKey' => [ '' ],
 567                         'wrap' => "$1",
 568                         'flags' => 0,
 569                         'useRequestParams' => false,
 570                         'useMaster' => false,
 571                         'extraUrlParams' => false,
 572                 ];
 573                 # The + operator appends elements of remaining keys from the right
 574                 # handed array to the left handed, whereas duplicated keys are NOT overwritten.
 575                 $param += $defaultParameters;
 576                 # Convert $param array to individual variables
 577                 $lim = $param['lim'];
 578                 $conds = $param['conds'];
 579                 $showIfEmpty = $param['showIfEmpty'];
 580                 $msgKey = $param['msgKey'];
 581                 $wrap = $param['wrap'];
 582                 $flags = $param['flags'];
 583                 $extraUrlParams = $param['extraUrlParams'];
 584
 585                 $useRequestParams = $param['useRequestParams'];
 586                 if ( !is_array( $msgKey ) ) {
 587                         $msgKey = [ $msgKey ];
 588                 }
 589
 590                 if ( $out instanceof OutputPage ) {
 591                         $context = $out->getContext();
 592                 } else {
 593                         $context = RequestContext::getMain();
 594                 }
 595
 596                 # Insert list of top 50 (or top $lim) items
 597                 $loglist = new LogEventsList( $context, null, $flags );
 598                 $pager = new LogPager( $loglist, $types, $user, $page, '', $conds );
 599                 if ( !$useRequestParams ) {
 600                         # Reset vars that may have been taken from the request
 601                         $pager->mLimit = 50;
 602                         $pager->mDefaultLimit = 50;
 603                         $pager->mOffset = "";
 604                         $pager->mIsBackwards = false;
 605                 }
 606
 607                 if ( $param['useMaster'] ) {
 608                         $pager->mDb = wfGetDB( DB_MASTER );
 609                 }
 610                 if ( isset( $param['offset'] ) ) { # Tell pager to ignore WebRequest offset
 611                         $pager->setOffset( $param['offset'] );
 612                 }
 613
 614                 if ( $lim > 0 ) {
 615                         $pager->mLimit = $lim;
 616                 }
 617                 // Fetch the log rows and build the HTML if needed
 618                 $logBody = $pager->getBody();
 619                 $numRows = $pager->getNumRows();
 620
 621                 $s = '';
 622
 623                 if ( $logBody ) {
 624                         if ( $msgKey[0] ) {
 625                                 $dir = $context->getLanguage()->getDir();
 626                                 $lang = $context->getLanguage()->getHtmlCode();
 627
 628                                 $s = Xml::openElement( 'div', [
 629                                         'class' => "mw-warning-with-logexcerpt mw-content-$dir",
 630                                         'dir' => $dir,
 631                                         'lang' => $lang,
 632                                 ] );
 633
 634                                 if ( count( $msgKey ) == 1 ) {
 635                                         $s .= $context->msg( $msgKey[0] )->parseAsBlock();
 636                                 } else { // Process additional arguments
 637                                         $args = $msgKey;
 638                                         array_shift( $args );
 639                                         $s .= $context->msg( $msgKey[0], $args )->parseAsBlock();
 640                                 }
 641                         }
 642                         $s .= $loglist->beginLogEventsList() .
 643                                 $logBody .
 644                                 $loglist->endLogEventsList();
 645                 } elseif ( $showIfEmpty ) {
 646                         $s = Html::rawElement( 'div', [ 'class' => 'mw-warning-logempty' ],
 647                                 $context->msg( 'logempty' )->parse() );
 648                 }
 649
 650                 if ( $numRows > $pager->mLimit ) { # Show "Full log" link
 651                         $urlParam = [];
 652                         if ( $page instanceof Title ) {
 653                                 $urlParam['page'] = $page->getPrefixedDBkey();
 654                         } elseif ( $page != '' ) {
 655                                 $urlParam['page'] = $page;
 656                         }
 657
 658                         if ( $user != '' ) {
 659                                 $urlParam['user'] = $user;
 660                         }
 661
 662                         if ( !is_array( $types ) ) { # Make it an array, if it isn't
 663                                 $types = [ $types ];
 664                         }
 665
 666                         # If there is exactly one log type, we can link to Special:Log?type=foo
 667                         if ( count( $types ) == 1 ) {
 668                                 $urlParam['type'] = $types[0];
 669                         }
 670
 671                         if ( $extraUrlParams !== false ) {
 672                                 $urlParam = array_merge( $urlParam, $extraUrlParams );
 673                         }
 674
 675                         $s .= Linker::linkKnown(
 676                                 SpecialPage::getTitleFor( 'Log' ),
 677                                 $context->msg( 'log-fulllog' )->escaped(),
 678                                 [],
 679                                 $urlParam
 680                         );
 681                 }
 682
 683                 if ( $logBody && $msgKey[0] ) {
 684                         $s .= '</div>';
 685                 }
 686
 687                 if ( $wrap != '' ) { // Wrap message in html
 688                         $s = str_replace( '$1', $s, $wrap );
 689                 }
 690
 691                 /* hook can return false, if we don't want the message to be emitted (Wikia BugId:7093) */
 692                 if ( Hooks::run( 'LogEventsListShowLogExtract', [ &$s, $types, $page, $user, $param ] ) ) {
 693                         // $out can be either an OutputPage object or a String-by-reference
 694                         if ( $out instanceof OutputPage ) {
 695                                 $out->addHTML( $s );
 696                         } else {
 697                                 $out = $s;
 698                         }
 699                 }
 700
 701                 return $numRows;
 702         }
 703
 704         /**
 705          * SQL clause to skip forbidden log types for this user
 706          *
 707          * @param IDatabase $db
 708          * @param string $audience Public/user
 709          * @param User $user User to check, or null to use $wgUser
 710          * @return string|bool String on success, false on failure.
 711          */
 712         public static function getExcludeClause( $db, $audience = 'public', User $user = null ) {
 713                 global $wgLogRestrictions;
 714
 715                 if ( $audience != 'public' && $user === null ) {
 716                         global $wgUser;
 717                         $user = $wgUser;
 718                 }
 719
 720                 // Reset the array, clears extra "where" clauses when $par is used
 721                 $hiddenLogs = [];
 722
 723                 // Don't show private logs to unprivileged users
 724                 foreach ( $wgLogRestrictions as $logType => $right ) {
 725                         if ( $audience == 'public' || !$user->isAllowed( $right ) ) {
 726                                 $hiddenLogs[] = $logType;
 727                         }
 728                 }
 729                 if ( count( $hiddenLogs ) == 1 ) {
 730                         return 'log_type != ' . $db->addQuotes( $hiddenLogs[0] );
 731                 } elseif ( $hiddenLogs ) {
 732                         return 'log_type NOT IN (' . $db->makeList( $hiddenLogs ) . ')';
 733                 }
 734
 735                 return false;
 736         }
 737 }