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