includes/LogEventsList.php

   1 <?php
   2 # Copyright (C) 2004 Brion Vibber <brion@pobox.com>, 2008 Aaron Schulz
   3 # http://www.mediawiki.org/
   4 #
   5 # This program is free software; you can redistribute it and/or modify
   6 # it under the terms of the GNU General Public License as published by
   7 # the Free Software Foundation; either version 2 of the License, or
   8 # (at your option) any later version.
   9 #
  10 # This program is distributed in the hope that it will be useful,
  11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  13 # GNU General Public License for more details.
  14 #
  15 # You should have received a copy of the GNU General Public License along
  16 # with this program; if not, write to the Free Software Foundation, Inc.,
  17 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18 # http://www.gnu.org/copyleft/gpl.html
  19
  20 class LogEventsList {
  21         const NO_ACTION_LINK = 1;
  22
  23         private $skin;
  24         private $out;
  25         public $flags;
  26
  27         public function __construct( $skin, $out, $flags = 0 ) {
  28                 $this->skin = $skin;
  29                 $this->out = $out;
  30                 $this->flags = $flags;
  31                 $this->preCacheMessages();
  32         }
  33
  34         /**
  35          * As we use the same small set of messages in various methods and that
  36          * they are called often, we call them once and save them in $this->message
  37          */
  38         private function preCacheMessages() {
  39                 // Precache various messages
  40                 if( !isset( $this->message ) ) {
  41                         $messages = array( 'revertmerge', 'protect_change', 'unblocklink', 'change-blocklink',
  42                                 'revertmove', 'undeletelink', 'undeleteviewlink', 'revdel-restore', 'rev-delundel', 'hist', 'diff',
  43                                 'pipe-separator' );
  44                         foreach( $messages as $msg ) {
  45                                 $this->message[$msg] = wfMsgExt( $msg, array( 'escapenoentities' ) );
  46                         }
  47                 }
  48         }
  49
  50         /**
  51          * Set page title and show header for this log type
  52          * @param $type String
  53          */
  54         public function showHeader( $type ) {
  55                 if( LogPage::isLogType( $type ) ) {
  56                         $this->out->setPageTitle( LogPage::logName( $type ) );
  57                         $this->out->addHTML( LogPage::logHeader( $type ) );
  58                 }
  59         }
  60
  61         /**
  62          * Show options for the log list
  63          * @param $types string or Array
  64          * @param $user String
  65          * @param $page String
  66          * @param $pattern String
  67          * @param $year Integer: year
  68          * @param $month Integer: month
  69          * @param $filter: array
  70          * @param $tagFilter: array?
  71          */
  72         public function showOptions( $types=array(), $user='', $page='', $pattern='', $year='',
  73                 $month = '', $filter = null, $tagFilter='' )
  74         {
  75                 global $wgScript, $wgMiserMode;
  76                 $action = htmlspecialchars( $wgScript );
  77                 $title = SpecialPage::getTitleFor( 'Log' );
  78                 $special = htmlspecialchars( $title->getPrefixedDBkey() );
  79                 // For B/C, we take strings, but make sure they are converted...
  80                 $types = ($types === '') ? array() : (array)$types;
  81
  82                 $tagSelector = ChangeTags::buildTagFilterSelector( $tagFilter );
  83
  84                 $this->out->addHTML( "<form action=\"$action\" method=\"get\"><fieldset>" .
  85                         Xml::element( 'legend', array(), wfMsg( 'log' ) ) .
  86                         Xml::hidden( 'title', $special ) . "\n" .
  87                         $this->getTypeMenu( $types ) . "\n" .
  88                         $this->getUserInput( $user ) . "\n" .
  89                         $this->getTitleInput( $page ) . "\n" .
  90                         ( !$wgMiserMode ? ($this->getTitlePattern( $pattern )."\n") : "" ) .
  91                         "<p>" . Xml::dateMenu( $year, $month ) . "\n" .
  92                         ( $tagSelector ? Xml::tags( 'p', null, implode( '&nbsp;', $tagSelector ) ) :'' ). "\n" .
  93                         ( $filter ? "</p><p>".$this->getFilterLinks( $filter )."\n" : "" ) . "\n" .
  94                         Xml::submitButton( wfMsg( 'allpagessubmit' ) ) . "</p>\n" .
  95                         "</fieldset></form>"
  96                 );
  97         }
  98
  99         /**
 100          * @param $filter Array
 101          * @return String: Formatted HTML
 102          */
 103         private function getFilterLinks( $filter ) {
 104                 global $wgTitle, $wgLang;
 105                 // show/hide links
 106                 $messages = array( wfMsgHtml( 'show' ), wfMsgHtml( 'hide' ) );
 107                 // Option value -> message mapping
 108                 $links = array();
 109                 $hiddens = ''; // keep track for "go" button
 110                 foreach( $filter as $type => $val ) {
 111                         $hideVal = 1 - intval($val);
 112                         $link = $this->skin->makeKnownLinkObj( $wgTitle, $messages[$hideVal],
 113                                 wfArrayToCGI( array( "hide_{$type}_log" => $hideVal ), $this->getDefaultQuery() )
 114                         );
 115                         $links[$type] = wfMsgHtml( "log-show-hide-{$type}", $link );
 116                         $hiddens .= Xml::hidden( "hide_{$type}_log", $val ) . "\n";
 117                 }
 118                 // Build links
 119                 return '<small>'.$wgLang->pipeList( $links ) . '</small>' . $hiddens;
 120         }
 121
 122         private function getDefaultQuery() {
 123                 if ( !isset( $this->mDefaultQuery ) ) {
 124                         $this->mDefaultQuery = $_GET;
 125                         unset( $this->mDefaultQuery['title'] );
 126                         unset( $this->mDefaultQuery['dir'] );
 127                         unset( $this->mDefaultQuery['offset'] );
 128                         unset( $this->mDefaultQuery['limit'] );
 129                         unset( $this->mDefaultQuery['order'] );
 130                         unset( $this->mDefaultQuery['month'] );
 131                         unset( $this->mDefaultQuery['year'] );
 132                 }
 133                 return $this->mDefaultQuery;
 134         }
 135
 136         /**
 137          * @param $queryTypes Array
 138          * @return String: Formatted HTML
 139          */
 140         private function getTypeMenu( $queryTypes ) {
 141                 global $wgLogRestrictions, $wgUser;
 142
 143                 $html = "<select name='type'>\n";
 144
 145                 $validTypes = LogPage::validTypes();
 146                 $typesByName = array(); // Temporary array
 147
 148                 // First pass to load the log names
 149                 foreach( $validTypes as $type ) {
 150                         $text = LogPage::logName( $type );
 151                         $typesByName[$text] = $type;
 152                 }
 153
 154                 // Second pass to sort by name
 155                 ksort($typesByName);
 156
 157                 // Note the query type
 158                 $queryType = count($queryTypes) == 1 ? $queryTypes[0] : '';
 159                 // Third pass generates sorted XHTML content
 160                 foreach( $typesByName as $text => $type ) {
 161                         $selected = ($type == $queryType);
 162                         // Restricted types
 163                         if ( isset($wgLogRestrictions[$type]) ) {
 164                                 if ( $wgUser->isAllowed( $wgLogRestrictions[$type] ) ) {
 165                                         $html .= Xml::option( $text, $type, $selected ) . "\n";
 166                                 }
 167                         } else {
 168                                 $html .= Xml::option( $text, $type, $selected ) . "\n";
 169                         }
 170                 }
 171
 172                 $html .= '</select>';
 173                 return $html;
 174         }
 175
 176         /**
 177          * @param $user String
 178          * @return String: Formatted HTML
 179          */
 180         private function getUserInput( $user ) {
 181                 return Xml::inputLabel( wfMsg( 'specialloguserlabel' ), 'user', 'mw-log-user', 15, $user );
 182         }
 183
 184         /**
 185          * @param $title String
 186          * @return String: Formatted HTML
 187          */
 188         private function getTitleInput( $title ) {
 189                 return Xml::inputLabel( wfMsg( 'speciallogtitlelabel' ), 'page', 'mw-log-page', 20, $title );
 190         }
 191
 192         /**
 193          * @return boolean Checkbox
 194          */
 195         private function getTitlePattern( $pattern ) {
 196                 return '<span style="white-space: nowrap">' .
 197                         Xml::checkLabel( wfMsg( 'log-title-wildcard' ), 'pattern', 'pattern', $pattern ) .
 198                         '</span>';
 199         }
 200
 201         public function beginLogEventsList() {
 202                 return "<ul>\n";
 203         }
 204
 205         public function endLogEventsList() {
 206                 return "</ul>\n";
 207         }
 208
 209         /**
 210          * @param $row Row: a single row from the result set
 211          * @return String: Formatted HTML list item
 212          */
 213         public function logLine( $row ) {
 214                 global $wgLang, $wgUser, $wgContLang;
 215
 216                 $title = Title::makeTitle( $row->log_namespace, $row->log_title );
 217                 $classes = array( "mw-logline-{$row->log_type}" );
 218                 $time = $wgLang->timeanddate( wfTimestamp(TS_MW, $row->log_timestamp), true );
 219                 // User links
 220                 if( self::isDeleted($row,LogPage::DELETED_USER) ) {
 221                         $userLink = '<span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 222                 } else {
 223                         $userLink = $this->skin->userLink( $row->log_user, $row->user_name ) .
 224                                 $this->skin->userToolLinks( $row->log_user, $row->user_name, true, 0, $row->user_editcount );
 225                 }
 226                 // Comment
 227                 if( self::isDeleted($row,LogPage::DELETED_COMMENT) ) {
 228                         $comment = '<span class="history-deleted">' . wfMsgHtml('rev-deleted-comment') . '</span>';
 229                 } else {
 230                         $comment = $wgContLang->getDirMark() . $this->skin->commentBlock( $row->log_comment );
 231                 }
 232                 // Extract extra parameters
 233                 $paramArray = LogPage::extractParams( $row->log_params );
 234                 $revert = $del = '';
 235                 // Some user can hide log items and have review links
 236                 if( !($this->flags & self::NO_ACTION_LINK) && $wgUser->isAllowed( 'deleterevision' ) ) {
 237                         $del = $this->getShowHideLinks( $row ) . ' ';
 238                 }
 239                 // Add review links and such...
 240                 if( ($this->flags & self::NO_ACTION_LINK) || ($row->log_deleted & LogPage::DELETED_ACTION) ) {
 241                         // Action text is suppressed...
 242                 } else if( self::typeAction($row,'move','move','move') && !empty($paramArray[0]) ) {
 243                         $destTitle = Title::newFromText( $paramArray[0] );
 244                         if( $destTitle ) {
 245                                 $revert = '(' . $this->skin->makeKnownLinkObj( SpecialPage::getTitleFor( 'Movepage' ),
 246                                         $this->message['revertmove'],
 247                                         'wpOldTitle=' . urlencode( $destTitle->getPrefixedDBkey() ) .
 248                                         '&wpNewTitle=' . urlencode( $title->getPrefixedDBkey() ) .
 249                                         '&wpReason=' . urlencode( wfMsgForContent( 'revertmove' ) ) .
 250                                         '&wpMovetalk=0' ) . ')';
 251                         }
 252                 // Show undelete link
 253                 } else if( self::typeAction($row,array('delete','suppress'),'delete','deletedhistory') ) {
 254                         if( !$wgUser->isAllowed( 'undelete' ) )
 255                                 $viewdeleted = $this->message['undeleteviewlink'];
 256                         else
 257                                 $viewdeleted = $this->message['undeletelink'];
 258                         $revert = '(' . $this->skin->makeKnownLinkObj( SpecialPage::getTitleFor( 'Undelete' ),
 259                                 $viewdeleted, 'target='. urlencode( $title->getPrefixedDBkey() ) ) . ')';
 260                 // Show unblock/change block link
 261                 } else if( self::typeAction($row,array('block','suppress'),array('block','reblock'),'block') ) {
 262                         $revert = '(' .
 263                                 $this->skin->link( SpecialPage::getTitleFor( 'Ipblocklist' ),
 264                                         $this->message['unblocklink'],
 265                                         array(),
 266                                         array( 'action' => 'unblock', 'ip' => $row->log_title ),
 267                                         'known' )
 268                                 . $this->message['pipe-separator'] .
 269                                 $this->skin->link( SpecialPage::getTitleFor( 'Blockip', $row->log_title ),
 270                                         $this->message['change-blocklink'],
 271                                         array(), array(), 'known' ) .
 272                                 ')';
 273                 // Show change protection link
 274                 } else if( self::typeAction( $row, 'protect', array( 'modify', 'protect', 'unprotect' ) ) ) {
 275                         $revert .= ' (' .
 276                                 $this->skin->link( $title,
 277                                         $this->message['hist'],
 278                                         array(),
 279                                         array( 'action' => 'history', 'offset' => $row->log_timestamp ) );
 280                         if( $wgUser->isAllowed( 'protect' ) ) {
 281                                 $revert .= $this->message['pipe-separator'] .
 282                                         $this->skin->link( $title,
 283                                                 $this->message['protect_change'],
 284                                                 array(),
 285                                                 array( 'action' => 'protect' ),
 286                                                 'known' );
 287                         }
 288                         $revert .= ')';
 289                 // Show unmerge link
 290                 } else if( self::typeAction($row,'merge','merge','mergehistory') ) {
 291                         $merge = SpecialPage::getTitleFor( 'Mergehistory' );
 292                         $revert = '(' .  $this->skin->makeKnownLinkObj( $merge, $this->message['revertmerge'],
 293                                 wfArrayToCGI( array('target' => $paramArray[0], 'dest' => $title->getPrefixedDBkey(),
 294                                         'mergepoint' => $paramArray[1] ) ) ) . ')';
 295                 // If an edit was hidden from a page give a review link to the history
 296                 } else if( self::typeAction($row,array('delete','suppress'),'revision','deleterevision') ) {
 297                         if( count($paramArray) >= 2 ) {
 298                                 $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 299                                 // Different revision types use different URL params...
 300                                 $key = $paramArray[0];
 301                                 // $paramArray[1] is a CSV of the IDs
 302                                 $Ids = explode( ',', $paramArray[1] );
 303                                 $query = urlencode($paramArray[1]);
 304                                 $revert = array();
 305                                 // Diff link for single rev deletions
 306                                 if( ( $key === 'oldid' || $key == 'revision' ) && count($Ids) == 1 ) {
 307                                         $revert[] = $this->skin->makeKnownLinkObj( $title, $this->message['diff'],
 308                                                 'diff='.intval($Ids[0])."&unhide=1" );
 309                                 }
 310                                 // View/modify link...
 311                                 $revert[] = $this->skin->makeKnownLinkObj( $revdel, $this->message['revdel-restore'],
 312                                         'target='.$title->getPrefixedUrl()."&type=$key&ids=$query" );
 313                                 // Pipe links
 314                                 $revert = '(' . implode(' | ',$revert) . ')';
 315                         }
 316                 // Hidden log items, give review link
 317                 } else if( self::typeAction($row,array('delete','suppress'),'event','deleterevision') ) {
 318                         if( count($paramArray) >= 1 ) {
 319                                 $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 320                                 // $paramArray[1] is a CSV of the IDs
 321                                 $Ids = explode( ',', $paramArray[0] );
 322                                 $query = urlencode($paramArray[0]);
 323                                 // Link to each hidden object ID, $paramArray[1] is the url param
 324                                 $revert = '(' . $this->skin->makeKnownLinkObj( $revdel, $this->message['revdel-restore'],
 325                                         'target='.$title->getPrefixedUrl()."&type=logging&ids=$query" ) . ')';
 326                         }
 327                 // Self-created users
 328                 } else if( self::typeAction($row,'newusers','create2') ) {
 329                         if( isset( $paramArray[0] ) ) {
 330                                 $revert = $this->skin->userToolLinks( $paramArray[0], $title->getDBkey(), true );
 331                         } else {
 332                                 # Fall back to a blue contributions link
 333                                 $revert = $this->skin->userToolLinks( 1, $title->getDBkey() );
 334                         }
 335                         if( $time < '20080129000000' ) {
 336                                 # Suppress $comment from old entries (before 2008-01-29),
 337                                 # not needed and can contain incorrect links
 338                                 $comment = '';
 339                         }
 340                 // Do nothing. The implementation is handled by the hook modifiying the passed-by-ref parameters.
 341                 } else {
 342                         wfRunHooks( 'LogLine', array( $row->log_type, $row->log_action, $title, $paramArray,
 343                                 &$comment, &$revert, $row->log_timestamp ) );
 344                 }
 345                 // Event description
 346                 if( self::isDeleted($row,LogPage::DELETED_ACTION) ) {
 347                         $action = '<span class="history-deleted">' . wfMsgHtml('rev-deleted-event') . '</span>';
 348                 } else {
 349                         $action = LogPage::actionText( $row->log_type, $row->log_action, $title,
 350                                 $this->skin, $paramArray, true );
 351                 }
 352
 353                 // Any tags...
 354                 list($tagDisplay, $newClasses) = ChangeTags::formatSummaryRow( $row->ts_tags, 'logevent' );
 355                 $classes = array_merge( $classes, $newClasses );
 356
 357                 if( $revert != '' ) {
 358                         $revert = '<span class="mw-logevent-actionlink">' . $revert . '</span>';
 359                 }
 360
 361                 $time = htmlspecialchars( $time );
 362
 363                 return Xml::tags( 'li', array( "class" => implode( ' ', $classes ) ),
 364                         $del . $time . ' ' . $userLink . ' ' . $action . ' ' . $comment . ' ' . $revert . " $tagDisplay" ) . "\n";
 365         }
 366
 367         /**
 368          * @param $row Row
 369          * @return string
 370          */
 371         private function getShowHideLinks( $row ) {
 372                 // If event was hidden from sysops
 373                 if( !self::userCan( $row, LogPage::DELETED_RESTRICTED ) ) {
 374                         $del = Xml::tags( 'span', array( 'class'=>'mw-revdelundel-link' ),
 375                                 '('.$this->message['rev-delundel'].')' );
 376                 } else if( $row->log_type == 'suppress' ) {
 377                         $del = ''; // No one should be hiding from the oversight log
 378                 } else {
 379                         $target = SpecialPage::getTitleFor( 'Log', $row->log_type );
 380                         $page = Title::makeTitle( $row->log_namespace, $row->log_title );
 381                         $query = array(
 382                                 'target' => $target->getPrefixedDBkey(),
 383                                 'type' => 'logging',
 384                                 'ids' => $row->log_id,
 385                         );
 386                         $del = $this->skin->revDeleteLink( $query,
 387                                 self::isDeleted( $row, LogPage::DELETED_RESTRICTED ) );
 388                 }
 389                 return $del;
 390         }
 391
 392         /**
 393          * @param $row Row
 394          * @param $type Mixed: string/array
 395          * @param $action Mixed: string/array
 396          * @param $right string
 397          * @return bool
 398          */
 399         public static function typeAction( $row, $type, $action, $right='' ) {
 400                 $match = is_array($type) ?
 401                         in_array($row->log_type,$type) : $row->log_type == $type;
 402                 if( $match ) {
 403                         $match = is_array($action) ?
 404                                 in_array($row->log_action,$action) : $row->log_action == $action;
 405                         if( $match && $right ) {
 406                                 global $wgUser;
 407                                 $match = $wgUser->isAllowed( $right );
 408                         }
 409                 }
 410                 return $match;
 411         }
 412
 413         /**
 414          * Determine if the current user is allowed to view a particular
 415          * field of this log row, if it's marked as deleted.
 416          * @param $row Row
 417          * @param $field Integer
 418          * @return Boolean
 419          */
 420         public static function userCan( $row, $field ) {
 421                 if( ( $row->log_deleted & $field ) == $field ) {
 422                         global $wgUser;
 423                         $permission = ( $row->log_deleted & LogPage::DELETED_RESTRICTED ) == LogPage::DELETED_RESTRICTED
 424                                 ? 'suppressrevision'
 425                                 : 'deleterevision';
 426                         wfDebug( "Checking for $permission due to $field match on $row->log_deleted\n" );
 427                         return $wgUser->isAllowed( $permission );
 428                 } else {
 429                         return true;
 430                 }
 431         }
 432
 433         /**
 434          * @param $row Row
 435          * @param $field Integer: one of DELETED_* bitfield constants
 436          * @return Boolean
 437          */
 438         public static function isDeleted( $row, $field ) {
 439                 return ($row->log_deleted & $field) == $field;
 440         }
 441
 442         /**
 443          * Quick function to show a short log extract
 444          * @param $out OutputPage
 445          * @param $types String or Array
 446          * @param $page String
 447          * @param $user String
 448          * @param $lim Integer
 449          * @param $conds Array
 450          */
 451         public static function showLogExtract( $out, $types=array(), $page='', $user='', $lim=0, $conds=array() ) {
 452                 global $wgUser;
 453                 # Insert list of top 50 or so items
 454                 $loglist = new LogEventsList( $wgUser->getSkin(), $out, 0 );
 455                 $pager = new LogPager( $loglist, $types, $user, $page, '', $conds );
 456                 if( $lim > 0 ) $pager->mLimit = $lim;
 457                 $logBody = $pager->getBody();
 458                 if( $logBody ) {
 459                         $out->addHTML(
 460                                 $loglist->beginLogEventsList() .
 461                                 $logBody .
 462                                 $loglist->endLogEventsList()
 463                         );
 464                 } else {
 465                         $out->addWikiMsg( 'logempty' );
 466                 }
 467                 return $pager->getNumRows();
 468         }
 469
 470         /**
 471          * SQL clause to skip forbidden log types for this user
 472          * @param $db Database
 473          * @param $audience string, public/user
 474          * @return mixed (string or false)
 475          */
 476         public static function getExcludeClause( $db, $audience = 'public' ) {
 477                 global $wgLogRestrictions, $wgUser;
 478                 // Reset the array, clears extra "where" clauses when $par is used
 479                 $hiddenLogs = array();
 480                 // Don't show private logs to unprivileged users
 481                 foreach( $wgLogRestrictions as $logType => $right ) {
 482                         if( $audience == 'public' || !$wgUser->isAllowed($right) ) {
 483                                 $safeType = $db->strencode( $logType );
 484                                 $hiddenLogs[] = $safeType;
 485                         }
 486                 }
 487                 if( count($hiddenLogs) == 1 ) {
 488                         return 'log_type != ' . $db->addQuotes( $hiddenLogs[0] );
 489                 } elseif( $hiddenLogs ) {
 490                         return 'log_type NOT IN (' . $db->makeList($hiddenLogs) . ')';
 491                 }
 492                 return false;
 493         }
 494 }
 495
 496 /**
 497  * @ingroup Pager
 498  */
 499 class LogPager extends ReverseChronologicalPager {
 500         private $types = array(), $user = '', $title = '', $pattern = '';
 501         private $typeCGI = '';
 502         public $mLogEventsList;
 503
 504         /**
 505          * constructor
 506          * @param $list LogEventsList
 507          * @param $types String or Array
 508          * @param $user String
 509          * @param $title String
 510          * @param $pattern String
 511          * @param $conds Array
 512          * @param $year Integer
 513          * @param $month Integer
 514          */
 515         public function __construct( $list, $types = array(), $user = '', $title = '', $pattern = '',
 516                 $conds = array(), $year = false, $month = false, $tagFilter = '' )
 517         {
 518                 parent::__construct();
 519                 $this->mConds = $conds;
 520
 521                 $this->mLogEventsList = $list;
 522
 523                 $this->limitType( $types ); // also excludes hidden types
 524                 $this->limitUser( $user );
 525                 $this->limitTitle( $title, $pattern );
 526                 $this->getDateCond( $year, $month );
 527                 $this->mTagFilter = $tagFilter;
 528         }
 529
 530         public function getDefaultQuery() {
 531                 $query = parent::getDefaultQuery();
 532                 $query['type'] = $this->typeCGI; // arrays won't work here
 533                 $query['user'] = $this->user;
 534                 $query['month'] = $this->mMonth;
 535                 $query['year'] = $this->mYear;
 536                 return $query;
 537         }
 538
 539         // Call ONLY after calling $this->limitType() already!
 540         public function getFilterParams() {
 541                 global $wgFilterLogTypes, $wgUser, $wgRequest;
 542                 $filters = array();
 543                 if( count($this->types) ) {
 544                         return $filters;
 545                 }
 546                 foreach( $wgFilterLogTypes as $type => $default ) {
 547                         // Avoid silly filtering
 548                         if( $type !== 'patrol' || $wgUser->useNPPatrol() ) {
 549                                 $hide = $wgRequest->getInt( "hide_{$type}_log", $default );
 550                                 $filters[$type] = $hide;
 551                                 if( $hide )
 552                                         $this->mConds[] = 'log_type != ' . $this->mDb->addQuotes( $type );
 553                         }
 554                 }
 555                 return $filters;
 556         }
 557
 558         /**
 559          * Set the log reader to return only entries of the given type.
 560          * Type restrictions enforced here
 561          * @param $types String or array: Log types ('upload', 'delete', etc);
 562          *   empty string means no restriction
 563          */
 564         private function limitType( $types ) {
 565                 global $wgLogRestrictions, $wgUser;
 566                 // If $types is not an array, make it an array
 567                 $types = ($types === '') ? array() : (array)$types;
 568                 // Don't even show header for private logs; don't recognize it...
 569                 foreach ( $types as $type ) {
 570                         if( isset( $wgLogRestrictions[$type] ) && !$wgUser->isAllowed($wgLogRestrictions[$type]) ) {
 571                                 $types = array_diff( $types, array( $type ) );
 572                         }
 573                 }
 574                 // Don't show private logs to unprivileged users.
 575                 // Also, only show them upon specific request to avoid suprises.
 576                 $audience = $types ? 'user' : 'public';
 577                 $hideLogs = LogEventsList::getExcludeClause( $this->mDb, $audience );
 578                 if( $hideLogs !== false ) {
 579                         $this->mConds[] = $hideLogs;
 580                 }
 581                 if( count($types) ) {
 582                         $this->types = $types;
 583                         $this->mConds['log_type'] = $types;
 584                         // Set typeCGI; used in url param for paging
 585                         if( count($types) == 1 ) $this->typeCGI = $types[0];
 586                 }
 587         }
 588
 589         /**
 590          * Set the log reader to return only entries by the given user.
 591          * @param $name String: (In)valid user name
 592          */
 593         private function limitUser( $name ) {
 594                 if( $name == '' ) {
 595                         return false;
 596                 }
 597                 $usertitle = Title::makeTitleSafe( NS_USER, $name );
 598                 if( is_null($usertitle) ) {
 599                         return false;
 600                 }
 601                 /* Fetch userid at first, if known, provides awesome query plan afterwards */
 602                 $userid = User::idFromName( $name );
 603                 if( !$userid ) {
 604                         /* It should be nicer to abort query at all,
 605                            but for now it won't pass anywhere behind the optimizer */
 606                         $this->mConds[] = "NULL";
 607                 } else {
 608                         global $wgUser;
 609                         $this->mConds['log_user'] = $userid;
 610                         // Paranoia: avoid brute force searches (bug 17342)
 611                         if( !$wgUser->isAllowed( 'suppressrevision' ) ) {
 612                                 $this->mConds[] = 'log_deleted & ' . LogPage::DELETED_USER . ' = 0';
 613                         }
 614                         $this->user = $usertitle->getText();
 615                 }
 616         }
 617
 618         /**
 619          * Set the log reader to return only entries affecting the given page.
 620          * (For the block and rights logs, this is a user page.)
 621          * @param $page String: Title name as text
 622          * @param $pattern String
 623          */
 624         private function limitTitle( $page, $pattern ) {
 625                 global $wgMiserMode, $wgUser;
 626
 627                 $title = Title::newFromText( $page );
 628                 if( strlen($page) == 0 || !$title instanceof Title )
 629                         return false;
 630
 631                 $this->title = $title->getPrefixedText();
 632                 $ns = $title->getNamespace();
 633                 # Using the (log_namespace, log_title, log_timestamp) index with a
 634                 # range scan (LIKE) on the first two parts, instead of simple equality,
 635                 # makes it unusable for sorting.  Sorted retrieval using another index
 636                 # would be possible, but then we might have to scan arbitrarily many
 637                 # nodes of that index. Therefore, we need to avoid this if $wgMiserMode
 638                 # is on.
 639                 #
 640                 # This is not a problem with simple title matches, because then we can
 641                 # use the page_time index.  That should have no more than a few hundred
 642                 # log entries for even the busiest pages, so it can be safely scanned
 643                 # in full to satisfy an impossible condition on user or similar.
 644                 if( $pattern && !$wgMiserMode ) {
 645                         # use escapeLike to avoid expensive search patterns like 't%st%'
 646                         $safetitle = $this->mDb->escapeLike( $title->getDBkey() );
 647                         $this->mConds['log_namespace'] = $ns;
 648                         $this->mConds[] = "log_title LIKE '$safetitle%'";
 649                         $this->pattern = $pattern;
 650                 } else {
 651                         $this->mConds['log_namespace'] = $ns;
 652                         $this->mConds['log_title'] = $title->getDBkey();
 653                 }
 654                 // Paranoia: avoid brute force searches (bug 17342)
 655                 if( !$wgUser->isAllowed( 'suppressrevision' ) ) {
 656                         $this->mConds[] = 'log_deleted & ' . LogPage::DELETED_ACTION . ' = 0';
 657                 }
 658         }
 659
 660         public function getQueryInfo() {
 661                 $tables = array( 'logging', 'user' );
 662                 $this->mConds[] = 'user_id = log_user';
 663                 $groupBy = false;
 664                 # Add log_search table if there are conditions on it
 665                 if( array_key_exists('ls_field',$this->mConds) ) {
 666                         $tables[] = 'log_search';
 667                         $index = array( 'log_search' => 'PRIMARY', 'logging' => 'PRIMARY' );
 668                         $groupBy = 'ls_log_id';
 669                 # Don't use the wrong logging index
 670                 } else if( $this->title || $this->pattern || $this->user ) {
 671                         $index = array( 'logging' => array('page_time','user_time') );
 672                 } else if( $this->types ) {
 673                         $index = array( 'logging' => 'type_time' );
 674                 } else {
 675                         $index = array( 'logging' => 'times' );
 676                 }
 677                 $options = array( 'USE INDEX' => $index );
 678                 # Don't show duplicate rows when using log_search
 679                 if( $groupBy ) $options['GROUP BY'] = $groupBy;
 680                 $info = array(
 681                         'tables'     => $tables,
 682                         'fields'     => array( 'log_type', 'log_action', 'log_user', 'log_namespace',
 683                                 'log_title', 'log_params', 'log_comment', 'log_id', 'log_deleted',
 684                                 'log_timestamp', 'user_name', 'user_editcount' ),
 685                         'conds'      => $this->mConds,
 686                         'options'    => $options,
 687                         'join_conds' => array(
 688                                 'user' => array( 'INNER JOIN', 'user_id=log_user' ),
 689                                 'log_search' => array( 'INNER JOIN', 'ls_log_id=log_id' )
 690                         )
 691                 );
 692                 # Add ChangeTags filter query
 693                 ChangeTags::modifyDisplayQuery( $info['tables'], $info['fields'], $info['conds'],
 694                         $info['join_conds'], $info['options'], $this->mTagFilter );
 695
 696                 return $info;
 697         }
 698
 699         function getIndexField() {
 700                 return 'log_timestamp';
 701         }
 702
 703         public function getStartBody() {
 704                 wfProfileIn( __METHOD__ );
 705                 # Do a link batch query
 706                 if( $this->getNumRows() > 0 ) {
 707                         $lb = new LinkBatch;
 708                         while( $row = $this->mResult->fetchObject() ) {
 709                                 $lb->add( $row->log_namespace, $row->log_title );
 710                                 $lb->addObj( Title::makeTitleSafe( NS_USER, $row->user_name ) );
 711                                 $lb->addObj( Title::makeTitleSafe( NS_USER_TALK, $row->user_name ) );
 712                         }
 713                         $lb->execute();
 714                         $this->mResult->seek( 0 );
 715                 }
 716                 wfProfileOut( __METHOD__ );
 717                 return '';
 718         }
 719
 720         public function formatRow( $row ) {
 721                 return $this->mLogEventsList->logLine( $row );
 722         }
 723
 724         public function getType() {
 725                 return $this->types;
 726         }
 727
 728         public function getUser() {
 729                 return $this->user;
 730         }
 731
 732         public function getPage() {
 733                 return $this->title;
 734         }
 735
 736         public function getPattern() {
 737                 return $this->pattern;
 738         }
 739
 740         public function getYear() {
 741                 return $this->mYear;
 742         }
 743
 744         public function getMonth() {
 745                 return $this->mMonth;
 746         }
 747
 748         public function getTagFilter() {
 749                 return $this->mTagFilter;
 750         }
 751
 752         public function doQuery() {
 753                 // Workaround MySQL optimizer bug
 754                 $this->mDb->setBigSelects();
 755                 parent::doQuery();
 756                 $this->mDb->setBigSelects( 'default' );
 757         }
 758 }
 759
 760 /**
 761  * @deprecated
 762  * @ingroup SpecialPage
 763  */
 764 class LogReader {
 765         var $pager;
 766         /**
 767          * @param $request WebRequest: for internal use use a FauxRequest object to pass arbitrary parameters.
 768          */
 769         function __construct( $request ) {
 770                 global $wgUser, $wgOut;
 771                 wfDeprecated(__METHOD__);
 772                 # Get parameters
 773                 $type = $request->getVal( 'type' );
 774                 $user = $request->getText( 'user' );
 775                 $title = $request->getText( 'page' );
 776                 $pattern = $request->getBool( 'pattern' );
 777                 $year = $request->getIntOrNull( 'year' );
 778                 $month = $request->getIntOrNull( 'month' );
 779                 $tagFilter = $request->getVal( 'tagfilter' );
 780                 # Don't let the user get stuck with a certain date
 781                 $skip = $request->getText( 'offset' ) || $request->getText( 'dir' ) == 'prev';
 782                 if( $skip ) {
 783                         $year = '';
 784                         $month = '';
 785                 }
 786                 # Use new list class to output results
 787                 $loglist = new LogEventsList( $wgUser->getSkin(), $wgOut, 0 );
 788                 $this->pager = new LogPager( $loglist, $type, $user, $title, $pattern, $year, $month, $tagFilter );
 789         }
 790
 791         /**
 792         * Is there at least one row?
 793         * @return bool
 794         */
 795         public function hasRows() {
 796                 return isset($this->pager) ? ($this->pager->getNumRows() > 0) : false;
 797         }
 798 }
 799
 800 /**
 801  * @deprecated
 802  * @ingroup SpecialPage
 803  */
 804 class LogViewer {
 805         const NO_ACTION_LINK = 1;
 806
 807         /**
 808          * LogReader object
 809          */
 810         var $reader;
 811
 812         /**
 813          * @param &$reader LogReader: where to get our data from
 814          * @param $flags Integer: Bitwise combination of flags:
 815          *     LogEventsList::NO_ACTION_LINK   Don't show restore/unblock/block links
 816          */
 817         function __construct( &$reader, $flags = 0 ) {
 818                 wfDeprecated(__METHOD__);
 819                 $this->reader =& $reader;
 820                 $this->reader->pager->mLogEventsList->flags = $flags;
 821                 # Aliases for shorter code...
 822                 $this->pager =& $this->reader->pager;
 823                 $this->list =& $this->reader->pager->mLogEventsList;
 824         }
 825
 826         /**
 827          * Take over the whole output page in $wgOut with the log display.
 828          */
 829         public function show() {
 830                 # Set title and add header
 831                 $this->list->showHeader( $pager->getType() );
 832                 # Show form options
 833                 $this->list->showOptions( $this->pager->getType(), $this->pager->getUser(), $this->pager->getPage(),
 834                         $this->pager->getPattern(), $this->pager->getYear(), $this->pager->getMonth() );
 835                 # Insert list
 836                 $logBody = $this->pager->getBody();
 837                 if( $logBody ) {
 838                         $wgOut->addHTML(
 839                                 $this->pager->getNavigationBar() .
 840                                 $this->list->beginLogEventsList() .
 841                                 $logBody .
 842                                 $this->list->endLogEventsList() .
 843                                 $this->pager->getNavigationBar()
 844                         );
 845                 } else {
 846                         $wgOut->addWikiMsg( 'logempty' );
 847                 }
 848         }
 849
 850         /**
 851          * Output just the list of entries given by the linked LogReader,
 852          * with extraneous UI elements. Use for displaying log fragments in
 853          * another page (eg at Special:Undelete)
 854          * @param $out OutputPage: where to send output
 855          */
 856         public function showList( &$out ) {
 857                 $logBody = $this->pager->getBody();
 858                 if( $logBody ) {
 859                         $out->addHTML(
 860                                 $this->list->beginLogEventsList() .
 861                                 $logBody .
 862                                 $this->list->endLogEventsList()
 863                         );
 864                 } else {
 865                         $out->addWikiMsg( 'logempty' );
 866                 }
 867         }
 868 }