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