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  * http://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_REVDEL_CHECKBOXES = 4;
  30
  31         public $flags;
  32
  33         /**
  34          * @var Array
  35          */
  36         protected $mDefaultQuery;
  37
  38         /**
  39          * Constructor.
  40          * The first two parameters used to be $skin and $out, but now only a context
  41          * is needed, that's why there's a second unused parameter.
  42          *
  43          * @param $context IContextSource Context to use; formerly it was Skin object.
  44          * @param $unused void Unused; used to be an OutputPage object.
  45          * @param int $flags flags; can be a combinaison of self::NO_ACTION_LINK,
  46          *        self::NO_EXTRA_USER_LINKS or self::USE_REVDEL_CHECKBOXES.
  47          */
  48         public function __construct( $context, $unused = null, $flags = 0 ) {
  49                 if ( $context instanceof IContextSource ) {
  50                         $this->setContext( $context );
  51                 } else {
  52                         // Old parameters, $context should be a Skin object
  53                         $this->setContext( $context->getContext() );
  54                 }
  55
  56                 $this->flags = $flags;
  57         }
  58
  59         /**
  60          * Deprecated alias for getTitle(); do not use.
  61          *
  62          * @deprecated in 1.20; use getTitle() instead.
  63          * @return Title object
  64          */
  65         public function getDisplayTitle() {
  66                 wfDeprecated( __METHOD__, '1.20' );
  67                 return $this->getTitle();
  68         }
  69
  70         /**
  71          * Set page title and show header for this log type
  72          * @param $type Array
  73          * @deprecated in 1.19
  74          */
  75         public function showHeader( $type ) {
  76                 wfDeprecated( __METHOD__, '1.19' );
  77                 // If only one log type is used, then show a special message...
  78                 $headerType = count( $type ) == 1 ? $type[0] : '';
  79                 $out = $this->getOutput();
  80                 if ( LogPage::isLogType( $headerType ) ) {
  81                         $page = new LogPage( $headerType );
  82                         $out->setPageTitle( $page->getName()->text() );
  83                         $out->addHTML( $page->getDescription()->parseAsBlock() );
  84                 } else {
  85                         $out->addHTML( $this->msg( 'alllogstext' )->parse() );
  86                 }
  87         }
  88
  89         /**
  90          * Show options for the log list
  91          *
  92          * @param string $types or Array
  93          * @param $user String
  94          * @param $page String
  95          * @param $pattern String
  96          * @param $year Integer: year
  97          * @param $month Integer: month
  98          * @param $filter: array
  99          * @param $tagFilter: array?
 100          */
 101         public function showOptions( $types = array(), $user = '', $page = '', $pattern = '', $year = 0,
 102                 $month = 0, $filter = null, $tagFilter = ''
 103         ) {
 104                 global $wgScript, $wgMiserMode;
 105
 106                 $title = SpecialPage::getTitleFor( 'Log' );
 107
 108                 // For B/C, we take strings, but make sure they are converted...
 109                 $types = ( $types === '' ) ? array() : (array)$types;
 110
 111                 $tagSelector = ChangeTags::buildTagFilterSelector( $tagFilter );
 112
 113                 $html = Html::hidden( 'title', $title->getPrefixedDBkey() );
 114
 115                 // Basic selectors
 116                 $html .= $this->getTypeMenu( $types ) . "\n";
 117                 $html .= $this->getUserInput( $user ) . "\n";
 118                 $html .= $this->getTitleInput( $page ) . "\n";
 119                 $html .= $this->getExtraInputs( $types ) . "\n";
 120
 121                 // Title pattern, if allowed
 122                 if ( !$wgMiserMode ) {
 123                         $html .= $this->getTitlePattern( $pattern ) . "\n";
 124                 }
 125
 126                 // date menu
 127                 $html .= Xml::tags( 'p', null, Xml::dateMenu( (int)$year, (int)$month ) );
 128
 129                 // Tag filter
 130                 if ( $tagSelector ) {
 131                         $html .= Xml::tags( 'p', null, implode( '&#160;', $tagSelector ) );
 132                 }
 133
 134                 // Filter links
 135                 if ( $filter ) {
 136                         $html .= Xml::tags( 'p', null, $this->getFilterLinks( $filter ) );
 137                 }
 138
 139                 // Submit button
 140                 $html .= Xml::submitButton( $this->msg( 'allpagessubmit' )->text() );
 141
 142                 // Fieldset
 143                 $html = Xml::fieldset( $this->msg( 'log' )->text(), $html );
 144
 145                 // Form wrapping
 146                 $html = Xml::tags( 'form', array( 'action' => $wgScript, 'method' => 'get' ), $html );
 147
 148                 $this->getOutput()->addHTML( $html );
 149         }
 150
 151         /**
 152          * @param $filter Array
 153          * @return String: Formatted HTML
 154          */
 155         private function getFilterLinks( $filter ) {
 156                 // show/hide links
 157                 $messages = array( $this->msg( 'show' )->escaped(), $this->msg( 'hide' )->escaped() );
 158                 // Option value -> message mapping
 159                 $links = array();
 160                 $hiddens = ''; // keep track for "go" button
 161                 foreach ( $filter as $type => $val ) {
 162                         // Should the below assignment be outside the foreach?
 163                         // Then it would have to be copied. Not certain what is more expensive.
 164                         $query = $this->getDefaultQuery();
 165                         $queryKey = "hide_{$type}_log";
 166
 167                         $hideVal = 1 - intval( $val );
 168                         $query[$queryKey] = $hideVal;
 169
 170                         $link = Linker::linkKnown(
 171                                 $this->getTitle(),
 172                                 $messages[$hideVal],
 173                                 array(),
 174                                 $query
 175                         );
 176
 177                         // Message: log-show-hide-patrol
 178                         $links[$type] = $this->msg( "log-show-hide-{$type}" )->rawParams( $link )->escaped();
 179                         $hiddens .= Html::hidden( "hide_{$type}_log", $val ) . "\n";
 180                 }
 181
 182                 // Build links
 183                 return '<small>' . $this->getLanguage()->pipeList( $links ) . '</small>' . $hiddens;
 184         }
 185
 186         private function getDefaultQuery() {
 187                 if ( !isset( $this->mDefaultQuery ) ) {
 188                         $this->mDefaultQuery = $this->getRequest()->getQueryValues();
 189                         unset( $this->mDefaultQuery['title'] );
 190                         unset( $this->mDefaultQuery['dir'] );
 191                         unset( $this->mDefaultQuery['offset'] );
 192                         unset( $this->mDefaultQuery['limit'] );
 193                         unset( $this->mDefaultQuery['order'] );
 194                         unset( $this->mDefaultQuery['month'] );
 195                         unset( $this->mDefaultQuery['year'] );
 196                 }
 197
 198                 return $this->mDefaultQuery;
 199         }
 200
 201         /**
 202          * @param $queryTypes Array
 203          * @return String: Formatted HTML
 204          */
 205         private function getTypeMenu( $queryTypes ) {
 206                 $queryType = count( $queryTypes ) == 1 ? $queryTypes[0] : '';
 207                 $selector = $this->getTypeSelector();
 208                 $selector->setDefault( $queryType );
 209
 210                 return $selector->getHtml();
 211         }
 212
 213         /**
 214          * Returns log page selector.
 215          * @return XmlSelect
 216          * @since 1.19
 217          */
 218         public function getTypeSelector() {
 219                 $typesByName = array(); // Temporary array
 220                 // First pass to load the log names
 221                 foreach ( LogPage::validTypes() as $type ) {
 222                         $page = new LogPage( $type );
 223                         $restriction = $page->getRestriction();
 224                         if ( $this->getUser()->isAllowed( $restriction ) ) {
 225                                 $typesByName[$type] = $page->getName()->text();
 226                         }
 227                 }
 228
 229                 // Second pass to sort by name
 230                 asort( $typesByName );
 231
 232                 // Always put "All public logs" on top
 233                 $public = $typesByName[''];
 234                 unset( $typesByName[''] );
 235                 $typesByName = array( '' => $public ) + $typesByName;
 236
 237                 $select = new XmlSelect( 'type' );
 238                 foreach ( $typesByName as $type => $name ) {
 239                         $select->addOption( $name, $type );
 240                 }
 241
 242                 return $select;
 243         }
 244
 245         /**
 246          * @param $user String
 247          * @return String: Formatted HTML
 248          */
 249         private function getUserInput( $user ) {
 250                 $label = Xml::inputLabel(
 251                         $this->msg( 'specialloguserlabel' )->text(),
 252                         'user',
 253                         'mw-log-user',
 254                         15,
 255                         $user
 256                 );
 257
 258                 return '<span style="white-space: nowrap">' . $label . '</span>';
 259         }
 260
 261         /**
 262          * @param $title String
 263          * @return String: Formatted HTML
 264          */
 265         private function getTitleInput( $title ) {
 266                 $label = Xml::inputLabel(
 267                         $this->msg( 'speciallogtitlelabel' )->text(),
 268                         'page',
 269                         'mw-log-page',
 270                         20,
 271                         $title
 272                 );
 273
 274                 return '<span style="white-space: nowrap">' . $label .  '</span>';
 275         }
 276
 277         /**
 278          * @param $pattern
 279          * @return string Checkbox
 280          */
 281         private function getTitlePattern( $pattern ) {
 282                 return '<span style="white-space: nowrap">' .
 283                         Xml::checkLabel( $this->msg( 'log-title-wildcard' )->text(), 'pattern', 'pattern', $pattern ) .
 284                         '</span>';
 285         }
 286
 287         /**
 288          * @param $types
 289          * @return string
 290          */
 291         private function getExtraInputs( $types ) {
 292                 $offender = $this->getRequest()->getVal( 'offender' );
 293                 $user = User::newFromName( $offender, false );
 294                 if ( !$user || ( $user->getId() == 0 && !IP::isIPAddress( $offender ) ) ) {
 295                         $offender = ''; // Blank field if invalid
 296                 }
 297                 if ( count( $types ) == 1 && $types[0] == 'suppress' ) {
 298                         return Xml::inputLabel( $this->msg( 'revdelete-offender' )->text(), 'offender',
 299                                 'mw-log-offender', 20, $offender );
 300                 }
 301
 302                 return '';
 303         }
 304
 305         /**
 306          * @return string
 307          */
 308         public function beginLogEventsList() {
 309                 return "<ul>\n";
 310         }
 311
 312         /**
 313          * @return string
 314          */
 315         public function endLogEventsList() {
 316                 return "</ul>\n";
 317         }
 318
 319         /**
 320          * @param $row Row: a single row from the result set
 321          * @return String: Formatted HTML list item
 322          */
 323         public function logLine( $row ) {
 324                 $entry = DatabaseLogEntry::newFromRow( $row );
 325                 $formatter = LogFormatter::newFromEntry( $entry );
 326                 $formatter->setContext( $this->getContext() );
 327                 $formatter->setShowUserToolLinks( !( $this->flags & self::NO_EXTRA_USER_LINKS ) );
 328
 329                 $time = htmlspecialchars( $this->getLanguage()->userTimeAndDate(
 330                         $entry->getTimestamp(), $this->getUser() ) );
 331
 332                 $action = $formatter->getActionText();
 333
 334                 if ( $this->flags & self::NO_ACTION_LINK ) {
 335                         $revert = '';
 336                 } else {
 337                         $revert = $formatter->getActionLinks();
 338                         if ( $revert != '' ) {
 339                                 $revert = '<span class="mw-logevent-actionlink">' . $revert . '</span>';
 340                         }
 341                 }
 342
 343                 $comment = $formatter->getComment();
 344
 345                 // Some user can hide log items and have review links
 346                 $del = $this->getShowHideLinks( $row );
 347
 348                 // Any tags...
 349                 list( $tagDisplay, $newClasses ) = ChangeTags::formatSummaryRow( $row->ts_tags, 'logevent' );
 350                 $classes = array_merge(
 351                         array( 'mw-logline-' . $entry->getType() ),
 352                         $newClasses
 353                 );
 354
 355                 return Html::rawElement( 'li', array( 'class' => $classes ),
 356                         "$del $time $action $comment $revert $tagDisplay" ) . "\n";
 357         }
 358
 359         /**
 360          * @param $row Row
 361          * @return string
 362          */
 363         private function getShowHideLinks( $row ) {
 364                 // We don't want to see the links and
 365                 // no one can hide items from the suppress log.
 366                 if ( ( $this->flags == self::NO_ACTION_LINK )
 367                         || $row->log_type == 'suppress'
 368                 ) {
 369                         return '';
 370                 }
 371                 $del = '';
 372                 $user = $this->getUser();
 373                 // Don't show useless checkbox to people who cannot hide log entries
 374                 if ( $user->isAllowed( 'deletedhistory' ) ) {
 375                         $canHide = $user->isAllowed( 'deletelogentry' );
 376                         if ( $row->log_deleted || $canHide ) {
 377                                 // Show checkboxes instead of links.
 378                                 if ( $canHide && $this->flags & self::USE_REVDEL_CHECKBOXES ) {
 379                                         // If event was hidden from sysops
 380                                         if ( !self::userCan( $row, LogPage::DELETED_RESTRICTED, $user ) ) {
 381                                                 $del = Xml::check( 'deleterevisions', false, array( 'disabled' => 'disabled' ) );
 382                                         } else {
 383                                                 $del = Xml::check(
 384                                                         'showhiderevisions',
 385                                                         false,
 386                                                         array( 'name' => 'ids[' . $row->log_id . ']' )
 387                                                 );
 388                                         }
 389                                 } else {
 390                                         // If event was hidden from sysops
 391                                         if ( !self::userCan( $row, LogPage::DELETED_RESTRICTED, $user ) ) {
 392                                                 $del = Linker::revDeleteLinkDisabled( $canHide );
 393                                         } else {
 394                                                 $query = array(
 395                                                         'target' => SpecialPage::getTitleFor( 'Log', $row->log_type )->getPrefixedDBkey(),
 396                                                         'type' => 'logging',
 397                                                         'ids' => $row->log_id,
 398                                                 );
 399                                                 $del = Linker::revDeleteLink(
 400                                                         $query,
 401                                                         self::isDeleted( $row, LogPage::DELETED_RESTRICTED ),
 402                                                         $canHide
 403                                                 );
 404                                         }
 405                                 }
 406                         }
 407                 }
 408
 409                 return $del;
 410         }
 411
 412         /**
 413          * @param $row Row
 414          * @param $type Mixed: string/array
 415          * @param $action Mixed: string/array
 416          * @param $right string
 417          * @return Boolean
 418          */
 419         public static function typeAction( $row, $type, $action, $right = '' ) {
 420                 $match = is_array( $type ) ?
 421                         in_array( $row->log_type, $type ) : $row->log_type == $type;
 422                 if ( $match ) {
 423                         $match = is_array( $action ) ?
 424                                 in_array( $row->log_action, $action ) : $row->log_action == $action;
 425                         if ( $match && $right ) {
 426                                 global $wgUser;
 427                                 $match = $wgUser->isAllowed( $right );
 428                         }
 429                 }
 430
 431                 return $match;
 432         }
 433
 434         /**
 435          * Determine if the current user is allowed to view a particular
 436          * field of this log row, if it's marked as deleted.
 437          *
 438          * @param $row Row
 439          * @param $field Integer
 440          * @param $user User object to check, or null to use $wgUser
 441          * @return Boolean
 442          */
 443         public static function userCan( $row, $field, User $user = null ) {
 444                 return self::userCanBitfield( $row->log_deleted, $field, $user );
 445         }
 446
 447         /**
 448          * Determine if the current user is allowed to view a particular
 449          * field of this log row, if it's marked as deleted.
 450          *
 451          * @param $bitfield Integer (current field)
 452          * @param $field Integer
 453          * @param $user User object to check, or null to use $wgUser
 454          * @return Boolean
 455          */
 456         public static function userCanBitfield( $bitfield, $field, User $user = null ) {
 457                 if ( $bitfield & $field ) {
 458                         if ( $bitfield & LogPage::DELETED_RESTRICTED ) {
 459                                 $permission = 'suppressrevision';
 460                         } else {
 461                                 $permission = 'deletedhistory';
 462                         }
 463                         wfDebug( "Checking for $permission due to $field match on $bitfield\n" );
 464                         if ( $user === null ) {
 465                                 global $wgUser;
 466                                 $user = $wgUser;
 467                         }
 468
 469                         return $user->isAllowed( $permission );
 470                 }
 471
 472                 return true;
 473         }
 474
 475         /**
 476          * @param $row Row
 477          * @param $field Integer: one of DELETED_* bitfield constants
 478          * @return Boolean
 479          */
 480         public static function isDeleted( $row, $field ) {
 481                 return ( $row->log_deleted & $field ) == $field;
 482         }
 483
 484         /**
 485          * Show log extract. Either with text and a box (set $msgKey) or without (don't set $msgKey)
 486          *
 487          * @param $out OutputPage|String-by-reference
 488          * @param string|array $types Log types to show
 489          * @param string|Title $page The page title to show log entries for
 490          * @param string $user The user who made the log entries
 491          * @param array $param Associative Array with the following additional options:
 492          * - lim Integer Limit of items to show, default is 50
 493          * - conds Array Extra conditions for the query (e.g. "log_action != 'revision'")
 494          * - showIfEmpty boolean Set to false if you don't want any output in case the loglist is empty
 495          *   if set to true (default), "No matching items in log" is displayed if loglist is empty
 496          * - msgKey Array If you want a nice box with a message, set this to the key of the message.
 497          *   First element is the message key, additional optional elements are parameters for the key
 498          *   that are processed with wfMessage
 499          * - offset Set to overwrite offset parameter in WebRequest
 500          *   set to '' to unset offset
 501          * - wrap String Wrap the message in html (usually something like "<div ...>$1</div>").
 502          * - flags Integer display flags (NO_ACTION_LINK,NO_EXTRA_USER_LINKS)
 503          * - useRequestParams boolean Set true to use Pager-related parameters in the WebRequest
 504          * @return Integer Number of total log items (not limited by $lim)
 505          */
 506         public static function showLogExtract(
 507                 &$out, $types = array(), $page = '', $user = '', $param = array()
 508         ) {
 509                 $defaultParameters = array(
 510                         'lim' => 25,
 511                         'conds' => array(),
 512                         'showIfEmpty' => true,
 513                         'msgKey' => array( '' ),
 514                         'wrap' => "$1",
 515                         'flags' => 0,
 516                         'useRequestParams' => false,
 517                 );
 518                 # The + operator appends elements of remaining keys from the right
 519                 # handed array to the left handed, whereas duplicated keys are NOT overwritten.
 520                 $param += $defaultParameters;
 521                 # Convert $param array to individual variables
 522                 $lim = $param['lim'];
 523                 $conds = $param['conds'];
 524                 $showIfEmpty = $param['showIfEmpty'];
 525                 $msgKey = $param['msgKey'];
 526                 $wrap = $param['wrap'];
 527                 $flags = $param['flags'];
 528                 $useRequestParams = $param['useRequestParams'];
 529                 if ( !is_array( $msgKey ) ) {
 530                         $msgKey = array( $msgKey );
 531                 }
 532
 533                 if ( $out instanceof OutputPage ) {
 534                         $context = $out->getContext();
 535                 } else {
 536                         $context = RequestContext::getMain();
 537                 }
 538
 539                 # Insert list of top 50 (or top $lim) items
 540                 $loglist = new LogEventsList( $context, null, $flags );
 541                 $pager = new LogPager( $loglist, $types, $user, $page, '', $conds );
 542                 if ( !$useRequestParams ) {
 543                         # Reset vars that may have been taken from the request
 544                         $pager->mLimit = 50;
 545                         $pager->mDefaultLimit = 50;
 546                         $pager->mOffset = "";
 547                         $pager->mIsBackwards = false;
 548                 }
 549                 if ( isset( $param['offset'] ) ) { # Tell pager to ignore WebRequest offset
 550                         $pager->setOffset( $param['offset'] );
 551                 }
 552                 if ( $lim > 0 ) {
 553                         $pager->mLimit = $lim;
 554                 }
 555                 $logBody = $pager->getBody();
 556                 $s = '';
 557                 if ( $logBody ) {
 558                         if ( $msgKey[0] ) {
 559                                 $s = '<div class="mw-warning-with-logexcerpt">';
 560
 561                                 if ( count( $msgKey ) == 1 ) {
 562                                         $s .= $context->msg( $msgKey[0] )->parseAsBlock();
 563                                 } else { // Process additional arguments
 564                                         $args = $msgKey;
 565                                         array_shift( $args );
 566                                         $s .= $context->msg( $msgKey[0], $args )->parseAsBlock();
 567                                 }
 568                         }
 569                         $s .= $loglist->beginLogEventsList() .
 570                                 $logBody .
 571                                 $loglist->endLogEventsList();
 572                 } elseif ( $showIfEmpty ) {
 573                         $s = Html::rawElement( 'div', array( 'class' => 'mw-warning-logempty' ),
 574                                 $context->msg( 'logempty' )->parse() );
 575                 }
 576                 if ( $pager->getNumRows() > $pager->mLimit ) { # Show "Full log" link
 577                         $urlParam = array();
 578                         if ( $page instanceof Title ) {
 579                                 $urlParam['page'] = $page->getPrefixedDBkey();
 580                         } elseif ( $page != '' ) {
 581                                 $urlParam['page'] = $page;
 582                         }
 583                         if ( $user != '' ) {
 584                                 $urlParam['user'] = $user;
 585                         }
 586                         if ( !is_array( $types ) ) { # Make it an array, if it isn't
 587                                 $types = array( $types );
 588                         }
 589                         # If there is exactly one log type, we can link to Special:Log?type=foo
 590                         if ( count( $types ) == 1 ) {
 591                                 $urlParam['type'] = $types[0];
 592                         }
 593                         $s .= Linker::link(
 594                                 SpecialPage::getTitleFor( 'Log' ),
 595                                 $context->msg( 'log-fulllog' )->escaped(),
 596                                 array(),
 597                                 $urlParam
 598                         );
 599                 }
 600                 if ( $logBody && $msgKey[0] ) {
 601                         $s .= '</div>';
 602                 }
 603
 604                 if ( $wrap != '' ) { // Wrap message in html
 605                         $s = str_replace( '$1', $s, $wrap );
 606                 }
 607
 608                 /* hook can return false, if we don't want the message to be emitted (Wikia BugId:7093) */
 609                 if ( wfRunHooks( 'LogEventsListShowLogExtract', array( &$s, $types, $page, $user, $param ) ) ) {
 610                         // $out can be either an OutputPage object or a String-by-reference
 611                         if ( $out instanceof OutputPage ) {
 612                                 $out->addHTML( $s );
 613                         } else {
 614                                 $out = $s;
 615                         }
 616                 }
 617
 618                 return $pager->getNumRows();
 619         }
 620
 621         /**
 622          * SQL clause to skip forbidden log types for this user
 623          *
 624          * @param $db DatabaseBase
 625          * @param $audience string, public/user
 626          * @param $user User object to check, or null to use $wgUser
 627          * @return Mixed: string or false
 628          */
 629         public static function getExcludeClause( $db, $audience = 'public', User $user = null ) {
 630                 global $wgLogRestrictions;
 631
 632                 if ( $audience != 'public' && $user === null ) {
 633                         global $wgUser;
 634                         $user = $wgUser;
 635                 }
 636
 637                 // Reset the array, clears extra "where" clauses when $par is used
 638                 $hiddenLogs = array();
 639
 640                 // Don't show private logs to unprivileged users
 641                 foreach ( $wgLogRestrictions as $logType => $right ) {
 642                         if ( $audience == 'public' || !$user->isAllowed( $right ) ) {
 643                                 $hiddenLogs[] = $logType;
 644                         }
 645                 }
 646                 if ( count( $hiddenLogs ) == 1 ) {
 647                         return 'log_type != ' . $db->addQuotes( $hiddenLogs[0] );
 648                 } elseif ( $hiddenLogs ) {
 649                         return 'log_type NOT IN (' . $db->makeList( $hiddenLogs ) . ')';
 650                 }
 651
 652                 return false;
 653         }
 654 }