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 $flags;
  26
  27         function __construct( &$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 = 'revertmerge protect_change unblocklink revertmove undeletelink revdel-restore rev-delundel';
  42                         foreach( explode(' ', $messages ) as $msg ) {
  43                                 $this->message[$msg] = wfMsgExt( $msg, array( 'escape') );
  44                         }
  45                 }
  46         }
  47
  48         /**
  49          * Set page title and show header for this log type
  50          * @param string $type
  51          */
  52         public function showHeader( $type ) {
  53                 if( LogPage::isLogType( $type ) ) {
  54                         $this->out->setPageTitle( LogPage::logName( $type ) );
  55                         $this->out->addHtml( LogPage::logHeader( $type ) );
  56                 }
  57         }
  58
  59         /**
  60          * Show options for the log list
  61          * @param string $type,
  62          * @param string $user,
  63          * @param string $page,
  64          * @param string $pattern
  65          * @param int $year
  66          * @parm int $month
  67          */
  68         public function showOptions( $type='', $user='', $page='', $pattern='', $year='', $month='' ) {
  69                 global $wgScript, $wgMiserMode;
  70                 $action = htmlspecialchars( $wgScript );
  71                 $title = SpecialPage::getTitleFor( 'Log' );
  72                 $special = htmlspecialchars( $title->getPrefixedDBkey() );
  73
  74                 $this->out->addHTML( "<form action=\"$action\" method=\"get\"><fieldset>" .
  75                         Xml::element( 'legend', array(), wfMsg( 'log' ) ) .
  76                         Xml::hidden( 'title', $special ) . "\n" .
  77                         $this->getTypeMenu( $type ) . "\n" .
  78                         $this->getUserInput( $user ) . "\n" .
  79                         $this->getTitleInput( $page ) . "\n" .
  80                         ( !$wgMiserMode ? ($this->getTitlePattern( $pattern )."\n") : "" ) .
  81                         "<p>" . $this->getDateMenu( $year, $month ) . "\n" .
  82                         Xml::submitButton( wfMsg( 'allpagessubmit' ) ) . "</p>\n" .
  83                         "</fieldset></form>" );
  84         }
  85
  86         /**
  87          * @return string Formatted HTML
  88          * @param string $queryType
  89          */
  90         private function getTypeMenu( $queryType ) {
  91                 global $wgLogRestrictions, $wgUser;
  92
  93                 $html = "<select name='type'>\n";
  94
  95                 $validTypes = LogPage::validTypes();
  96                 $m = array(); // Temporary array
  97
  98                 // First pass to load the log names
  99                 foreach( $validTypes as $type ) {
 100                         $text = LogPage::logName( $type );
 101                         $m[$text] = $type;
 102                 }
 103
 104                 // Second pass to sort by name
 105                 ksort($m);
 106
 107                 // Third pass generates sorted XHTML content
 108                 foreach( $m as $text => $type ) {
 109                         $selected = ($type == $queryType);
 110                         // Restricted types
 111                         if ( isset($wgLogRestrictions[$type]) ) {
 112                                 if ( $wgUser->isAllowed( $wgLogRestrictions[$type] ) ) {
 113                                         $html .= Xml::option( $text, $type, $selected ) . "\n";
 114                                 }
 115                         } else {
 116                                 $html .= Xml::option( $text, $type, $selected ) . "\n";
 117                         }
 118                 }
 119
 120                 $html .= '</select>';
 121                 return $html;
 122         }
 123
 124         /**
 125          * @return string Formatted HTML
 126          * @param string $user
 127          */
 128         private function getUserInput( $user ) {
 129                 return Xml::inputLabel( wfMsg( 'specialloguserlabel' ), 'user', 'user', 15, $user );
 130         }
 131
 132         /**
 133          * @return string Formatted HTML
 134          * @param string $title
 135          */
 136         private function getTitleInput( $title ) {
 137                 return Xml::inputLabel( wfMsg( 'speciallogtitlelabel' ), 'page', 'page', 20, $title );
 138         }
 139
 140         /**
 141          * @return string Formatted HTML
 142          * @param int $year
 143          * @param int $month
 144          */
 145         private function getDateMenu( $year, $month ) {
 146                 # Offset overrides year/month selection
 147                 if( $month && $month !== -1 ) {
 148                         $encMonth = intval( $month );
 149                 } else {
 150                         $encMonth = '';
 151                 }
 152                 if ( $year ) {
 153                         $encYear = intval( $year );
 154                 } else if( $encMonth ) {
 155                         $thisMonth = intval( gmdate( 'n' ) );
 156                         $thisYear = intval( gmdate( 'Y' ) );
 157                         if( intval($encMonth) > $thisMonth ) {
 158                                 $thisYear--;
 159                         }
 160                         $encYear = $thisYear;
 161                 } else {
 162                         $encYear = '';
 163                 }
 164                 return Xml::label( wfMsg( 'year' ), 'year' ) . ' '.
 165                         Xml::input( 'year', 4, $encYear, array('id' => 'year', 'maxlength' => 4) ) .
 166                         ' '.
 167                         Xml::label( wfMsg( 'month' ), 'month' ) . ' '.
 168                         Xml::monthSelector( $encMonth, -1 );
 169         }
 170
 171         /**
 172          * @return boolean Checkbox
 173          */
 174         private function getTitlePattern( $pattern ) {
 175                 return '<span style="white-space: nowrap">' .
 176                         Xml::checkLabel( wfMsg( 'log-title-wildcard' ), 'pattern', 'pattern', $pattern ) .
 177                         '</span>';
 178         }
 179
 180         public function beginLogEventsList() {
 181                 return "<ul>\n";
 182         }
 183
 184         public function endLogEventsList() {
 185                 return "</ul>\n";
 186         }
 187
 188                 /**
 189          * @param Row $row a single row from the result set
 190          * @return string Formatted HTML list item
 191          * @private
 192          */
 193         public function logLine( $row ) {
 194                 global $wgLang, $wgUser, $wgContLang;
 195
 196                 $title = Title::makeTitle( $row->log_namespace, $row->log_title );
 197                 $time = $wgLang->timeanddate( wfTimestamp(TS_MW, $row->log_timestamp), true );
 198                 // User links
 199                 if( self::isDeleted($row,LogPage::DELETED_USER) ) {
 200                         $userLink = '<span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
 201                 } else {
 202                         $userLink = $this->skin->userLink( $row->log_user, $row->user_name ) .
 203                                 $this->skin->userToolLinks( $row->log_user, $row->user_name, true, 0, $row->user_editcount );
 204                 }
 205                 // Comment
 206                 if( self::isDeleted($row,LogPage::DELETED_COMMENT) ) {
 207                         $comment = '<span class="history-deleted">' . wfMsgHtml('rev-deleted-comment') . '</span>';
 208                 } else {
 209                         $comment = $wgContLang->getDirMark() . $this->skin->commentBlock( $row->log_comment );
 210                 }
 211                 // Extract extra parameters
 212                 $paramArray = LogPage::extractParams( $row->log_params );
 213                 $revert = $del = '';
 214                 // Some user can hide log items and have review links
 215                 if( $wgUser->isAllowed( 'deleterevision' ) ) {
 216                         $del = $this->showhideLinks( $row ) . ' ';
 217                 }
 218                 // Add review links and such...
 219                 if( !($this->flags & self::NO_ACTION_LINK) && !($row->log_deleted & LogPage::DELETED_ACTION) ) {
 220                         if( self::typeAction($row,'move','move') && isset( $paramArray[0] ) && $wgUser->isAllowed( 'move' ) ) {
 221                                 $destTitle = Title::newFromText( $paramArray[0] );
 222                                 if( $destTitle ) {
 223                                         $revert = '(' . $this->skin->makeKnownLinkObj( SpecialPage::getTitleFor( 'Movepage' ),
 224                                                 $this->message['revertmove'],
 225                                                 'wpOldTitle=' . urlencode( $destTitle->getPrefixedDBkey() ) .
 226                                                 '&wpNewTitle=' . urlencode( $title->getPrefixedDBkey() ) .
 227                                                 '&wpReason=' . urlencode( wfMsgForContent( 'revertmove' ) ) .
 228                                                 '&wpMovetalk=0' ) . ')';
 229                                 }
 230                         // Show undelete link
 231                         } else if( self::typeAction($row,array('delete','suppress'),'delete') && $wgUser->isAllowed( 'delete' ) ) {
 232                                 $revert = '(' . $this->skin->makeKnownLinkObj( SpecialPage::getTitleFor( 'Undelete' ),
 233                                         $this->message['undeletelink'], 'target='. urlencode( $title->getPrefixedDBkey() ) ) . ')';
 234                         // Show unblock link
 235                         } else if( self::typeAction($row,'block','block') && $wgUser->isAllowed( 'block' ) ) {
 236                                 $revert = '(' .  $this->skin->makeKnownLinkObj( SpecialPage::getTitleFor( 'Ipblocklist' ),
 237                                         $this->message['unblocklink'],
 238                                         'action=unblock&ip=' . urlencode( $row->log_title ) ) . ')';
 239                         // Show change protection link
 240                         } else if( self::typeAction($row,'protect','modify') && $wgUser->isAllowed( 'protect' ) ) {
 241                                 $revert = '(' .  $this->skin->makeKnownLinkObj( $title, $this->message['protect_change'], 'action=unprotect' ) . ')';
 242                         // Show unmerge link
 243                         } else if ( self::typeAction($row,'merge','merge') ) {
 244                                 $merge = SpecialPage::getTitleFor( 'Mergehistory' );
 245                                 $revert = '(' .  $this->skin->makeKnownLinkObj( $merge, $this->message['revertmerge'],
 246                                         wfArrayToCGI( array('target' => $paramArray[0], 'dest' => $title->getPrefixedDBkey(),
 247                                                 'mergepoint' => $paramArray[1] ) ) ) . ')';
 248                         // If an edit was hidden from a page give a review link to the history
 249                         } else if( self::typeAction($row,array('delete','suppress'),'revision') && $wgUser->isAllowed( 'deleterevision' ) ) {
 250                                 if( count($paramArray) == 2 ) {
 251                                         $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 252                                         // Different revision types use different URL params...
 253                                         $key = $paramArray[0];
 254                                         // Link to each hidden object ID, $paramArray[1] is the url param. List if several...
 255                                         $Ids = explode( ',', $paramArray[1] );
 256                                         if( count($Ids) == 1 ) {
 257                                                 $revert = $this->skin->makeKnownLinkObj( $revdel, $this->message['revdel-restore'],
 258                                                         wfArrayToCGI( array('target' => $title->getPrefixedDBkey(), $key => $Ids[0] ) ) );
 259                                         } else {
 260                                                 $revParams = '';
 261                                                 foreach( $Ids as $n => $id ) {
 262                                                         $revParams .= '&oldid[]=' . intval($id);
 263                                                 }
 264                                                 $revert = $this->skin->makeKnownLinkObj( $revdel, $this->message['revdel-restore'],
 265                                                         'target=' . $title->getPrefixedUrl() . $revParams );
 266                                         }
 267                                         $revert = "($revert)";
 268                                 }
 269                         // Hidden log items, give review link
 270                         } else if( self::typeAction($row,array('delete','suppress'),'event') && $wgUser->isAllowed( 'deleterevision' ) ) {
 271                                 if( count($paramArray) == 1 ) {
 272                                         $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 273                                         $Ids = explode( ',', $paramArray[0] );
 274                                         // Link to each hidden object ID, $paramArray[1] is the url param. List if several...
 275                                         if( count($Ids) == 1 ) {
 276                                                 $revert = $this->skin->makeKnownLinkObj( $revdel, $this->message['revdel-restore'],
 277                                                         wfArrayToCGI( array('target' => $title->getPrefixedDBkey(),'logid' => $Ids[0] ) ) );
 278                                         } else {
 279                                                 $logParams = '';
 280                                                 foreach( $Ids as $n => $id ) {
 281                                                         $logParams .= '&logid[]=' . intval($id);
 282                                                 }
 283                                                 $revert = $this->skin->makeKnownLinkObj( $revdel, $this->message['revdel-restore'],
 284                                                         'target=' . $title->getPrefixedUrl() . $logParams );
 285                                         }
 286                                         $revert = "($revert)";
 287                                 }
 288                         } else {
 289                                 wfRunHooks( 'LogLine', array( $row->log_type, $row->log_action, $title, $paramArray,
 290                                         &$comment, &$revert, $row->log_timestamp ) );
 291                                 // wfDebug( "Invoked LogLine hook for " $row->log_type . ", " . $row->log_action . "\n" );
 292                                 // Do nothing. The implementation is handled by the hook modifiying the passed-by-ref parameters.
 293                         }
 294                 }
 295                 // Event description
 296                 if( self::isDeleted($row,LogPage::DELETED_ACTION) ) {
 297                         $action = '<span class="history-deleted">' . wfMsgHtml('rev-deleted-event') . '</span>';
 298                 } else {
 299                         $action = LogPage::actionText( $row->log_type, $row->log_action, $title, $this->skin, $paramArray, true );
 300                 }
 301
 302                 return "<li>$del$time $userLink $action $comment $revert</li>\n";
 303         }
 304
 305         /**
 306          * @param Row $row
 307          * @return string
 308          */
 309         private function showhideLinks( $row ) {
 310                 $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
 311                 // If event was hidden from sysops
 312                 if( !self::userCan( $row, LogPage::DELETED_RESTRICTED ) ) {
 313                         $del = $this->message['rev-delundel'];
 314                 } else if( $row->log_type == 'suppress' ) {
 315                         // No one should be hiding from the oversight log
 316                         $del = $this->message['rev-delundel'];
 317                 } else {
 318                         $target = SpecialPage::getTitleFor( 'Log', $row->log_type );
 319                         $del = $this->skin->makeKnownLinkObj( $revdel, $this->message['rev-delundel'],
 320                                 'target=' . $target->getPrefixedUrl() . '&logid='.$row->log_id );
 321                         // Bolden oversighted content
 322                         if( self::isDeleted( $row, LogPage::DELETED_RESTRICTED ) )
 323                                 $del = "<strong>$del</strong>";
 324                 }
 325                 return "<tt>(<small>$del</small>)</tt>";
 326         }
 327
 328         /**
 329          * @param Row $row
 330          * @param mixed $type (string/array)
 331          * @param string $action
 332          * @return bool
 333          */
 334         public static function typeAction( $row, $type, $action ) {
 335                 if( is_array($type) ) {
 336                         return ( in_array($row->log_type,$type) && $row->log_action == $action );
 337                 } else {
 338                         return ( $row->log_type == $type && $row->log_action == $action );
 339                 }
 340         }
 341
 342         /**
 343          * Determine if the current user is allowed to view a particular
 344          * field of this log row, if it's marked as deleted.
 345          * @param Row $row
 346          * @param int $field
 347          * @return bool
 348          */
 349         public static function userCan( $row, $field ) {
 350                 if( ( $row->log_deleted & $field ) == $field ) {
 351                         global $wgUser;
 352                         $permission = ( $row->log_deleted & LogPage::DELETED_RESTRICTED ) == LogPage::DELETED_RESTRICTED
 353                                 ? 'hiderevision'
 354                                 : 'deleterevision';
 355                         wfDebug( "Checking for $permission due to $field match on $row->log_deleted\n" );
 356                         return $wgUser->isAllowed( $permission );
 357                 } else {
 358                         return true;
 359                 }
 360         }
 361
 362         /**
 363          * @param Row $row
 364          * @param int $field one of DELETED_* bitfield constants
 365          * @return bool
 366          */
 367         public static function isDeleted( $row, $field ) {
 368                 return ($row->log_deleted & $field) == $field;
 369         }
 370
 371         /**
 372          * Quick function to show a short log extract
 373          * @param OutputPage $out
 374          * @param string $type
 375          * @param string $page
 376          * @param string $user
 377          */
 378          public static function showLogExtract( $out, $type='', $page='', $user='' ) {
 379                 global $wgUser;
 380                 # Insert list of top 50 or so items
 381                 $loglist = new LogEventsList( $wgUser->getSkin(), $out, 0 );
 382                 $pager = new LogPager( $loglist, $type, $user, $page, '' );
 383                 $logBody = $pager->getBody();
 384                 if( $logBody ) {
 385                         $out->addHTML(
 386                                 $loglist->beginLogEventsList() .
 387                                 $logBody .
 388                                 $loglist->endLogEventsList()
 389                         );
 390                 } else {
 391                         $out->addWikiMsg( 'logempty' );
 392                 }
 393          }
 394
 395          /**
 396          * SQL clause to skip forbidden log types for this user
 397          * @param Database $db
 398          * @returns mixed (string or false)
 399          */
 400         public static function getExcludeClause( $db ) {
 401                 global $wgLogRestrictions, $wgUser;
 402                 // Reset the array, clears extra "where" clauses when $par is used
 403                 $hiddenLogs = array();
 404                 // Don't show private logs to unprivileged users
 405                 foreach( $wgLogRestrictions as $logtype => $right ) {
 406                         if( !$wgUser->isAllowed($right) ) {
 407                                 $safetype = $db->strencode( $logtype );
 408                                 $hiddenLogs[] = $safetype;
 409                         }
 410                 }
 411                 if( count($hiddenLogs) == 1 ) {
 412                         return 'log_type != ' . $db->addQuotes( $hiddenLogs[0] );
 413                 } elseif( !empty( $hiddenLogs ) ) {
 414                         return 'log_type NOT IN (' . $db->makeList($hiddenLogs) . ')';
 415                 }
 416                 return false;
 417         }
 418 }
 419
 420 /**
 421  * @addtogroup Pager
 422  */
 423 class LogPager extends ReverseChronologicalPager {
 424         private $type = '', $user = '', $title = '', $pattern = '', $year = '', $month = '';
 425         public $mLogEventsList;
 426         /**
 427         * constructor
 428         * @param LogEventsList $loglist,
 429         * @param string $type,
 430         * @param string $user,
 431         * @param string $page,
 432         * @param string $pattern
 433         * @param array $conds
 434         */
 435         function __construct( $list, $type='', $user='', $title='', $pattern='', $conds=array(), $y=false, $m=false ) {
 436                 parent::__construct();
 437                 $this->mConds = $conds;
 438
 439                 $this->mLogEventsList = $list;
 440
 441                 $this->limitType( $type );
 442                 $this->limitUser( $user );
 443                 $this->limitTitle( $title, $pattern );
 444                 $this->limitDate( $y, $m );
 445         }
 446
 447         function getDefaultQuery() {
 448                 $query = parent::getDefaultQuery();
 449                 $query['type'] = $this->type;
 450                 $query['month'] = $this->month;
 451                 $query['year'] = $this->year;
 452                 return $query;
 453         }
 454
 455         /**
 456          * Set the log reader to return only entries of the given type.
 457          * Type restrictions enforced here
 458          * @param string $type A log type ('upload', 'delete', etc)
 459          * @private
 460          */
 461         private function limitType( $type ) {
 462                 global $wgLogRestrictions, $wgUser;
 463                 // Don't even show header for private logs; don't recognize it...
 464                 if( isset($wgLogRestrictions[$type]) && !$wgUser->isAllowed($wgLogRestrictions[$type]) ) {
 465                         $type = '';
 466                 }
 467                 // Don't show private logs to unpriviledged users
 468                 $hideLogs = LogEventsList::getExcludeClause( $this->mDb );
 469                 if( $hideLogs !== false ) {
 470                         $this->mConds[] = $hideLogs;
 471                 }
 472                 if( empty($type) ) {
 473                         return false;
 474                 }
 475                 $this->type = $type;
 476                 $this->mConds['log_type'] = $type;
 477         }
 478
 479         /**
 480          * Set the log reader to return only entries by the given user.
 481          * @param string $name (In)valid user name
 482          * @private
 483          */
 484         function limitUser( $name ) {
 485                 if( $name == '' ) {
 486                         return false;
 487                 }
 488                 $usertitle = Title::makeTitleSafe( NS_USER, $name );
 489                 if( is_null($usertitle) ) {
 490                         return false;
 491                 }
 492                 /* Fetch userid at first, if known, provides awesome query plan afterwards */
 493                 $userid = User::idFromName( $name );
 494                 if( !$userid ) {
 495                         /* It should be nicer to abort query at all,
 496                            but for now it won't pass anywhere behind the optimizer */
 497                         $this->mConds[] = "NULL";
 498                 } else {
 499                         $this->mConds['log_user'] = $userid;
 500                         $this->user = $usertitle->getText();
 501                 }
 502         }
 503
 504         /**
 505          * Set the log reader to return only entries affecting the given page.
 506          * (For the block and rights logs, this is a user page.)
 507          * @param string $page Title name as text
 508          * @private
 509          */
 510         function limitTitle( $page, $pattern ) {
 511                 global $wgMiserMode;
 512
 513                 $title = Title::newFromText( $page );
 514                 if( strlen($page) == 0 || !$title instanceof Title )
 515                         return false;
 516
 517                 $this->title = $title->getPrefixedText();
 518                 $ns = $title->getNamespace();
 519                 if( $pattern && !$wgMiserMode ) {
 520                         # use escapeLike to avoid expensive search patterns like 't%st%'
 521                         $safetitle = $this->mDb->escapeLike( $title->getDBkey() );
 522                         $this->mConds['log_namespace'] = $ns;
 523                         $this->mConds[] = "log_title LIKE '$safetitle%'";
 524                         $this->pattern = $pattern;
 525                 } else {
 526                         $this->mConds['log_namespace'] = $ns;
 527                         $this->mConds['log_title'] = $title->getDBkey();
 528                 }
 529         }
 530
 531         /**
 532          * Set the log reader to return only entries from given date.
 533          * @param int $year
 534          * @param int $month
 535          * @private
 536          */
 537         function limitDate( $year, $month ) {
 538                 $year = intval($year);
 539                 $month = intval($month);
 540
 541                 $this->year = ($year > 0 && $year < 10000) ? $year : '';
 542                 $this->month = ($month > 0 && $month < 13) ? $month : '';
 543
 544                 if( $this->year || $this->month ) {
 545                         // Assume this year if only a month is given
 546                         if( $this->year ) {
 547                                 $year_start = $this->year;
 548                         } else {
 549                                 $year_start = substr( wfTimestampNow(), 0, 4 );
 550                                 $thisMonth = gmdate( 'n' );
 551                                 if( $this->month > $thisMonth ) {
 552                                         // Future contributions aren't supposed to happen. :)
 553                                         $year_start--;
 554                                 }
 555                         }
 556
 557                         if( $this->month ) {
 558                                 $month_end = str_pad($this->month + 1, 2, '0', STR_PAD_LEFT);
 559                                 $year_end = $year_start;
 560                         } else {
 561                                 $month_end = 0;
 562                                 $year_end = $year_start + 1;
 563                         }
 564                         $ts_end = str_pad($year_end . $month_end, 14, '0' );
 565
 566                         $this->mOffset = $ts_end;
 567                 }
 568         }
 569
 570         function getQueryInfo() {
 571                 $this->mConds[] = 'user_id = log_user';
 572                 # Don't use the wrong logging index
 573                 if( $this->title || $this->pattern || $this->user ) {
 574                         $index = array( 'USE INDEX' => array( 'logging' => array('page_time','user_time') ) );
 575                 } else if( $this->type ) {
 576                         $index = array( 'USE INDEX' => array( 'logging' => 'type_time' ) );
 577                 } else {
 578                         $index = array( 'USE INDEX' => array( 'logging' => 'times' ) );
 579                 }
 580                 return array(
 581                         'tables' => array( 'logging', 'user' ),
 582                         'fields' => array( 'log_type', 'log_action', 'log_user', 'log_namespace', 'log_title', 'log_params',
 583                                 'log_comment', 'log_id', 'log_deleted', 'log_timestamp', 'user_name', 'user_editcount' ),
 584                         'conds' => $this->mConds,
 585                         'options' => $index
 586                 );
 587         }
 588
 589         function getIndexField() {
 590                 return 'log_timestamp';
 591         }
 592
 593         function getStartBody() {
 594                 wfProfileIn( __METHOD__ );
 595                 # Do a link batch query
 596                 if( $this->getNumRows() > 0 ) {
 597                         $lb = new LinkBatch;
 598                         while( $row = $this->mResult->fetchObject() ) {
 599                                 $lb->add( $row->log_namespace, $row->log_title );
 600                                 $lb->addObj( Title::makeTitleSafe( NS_USER, $row->user_name ) );
 601                                 $lb->addObj( Title::makeTitleSafe( NS_USER_TALK, $row->user_name ) );
 602                         }
 603                         $lb->execute();
 604                         $this->mResult->seek( 0 );
 605                 }
 606                 wfProfileOut( __METHOD__ );
 607                 return '';
 608         }
 609
 610         function formatRow( $row ) {
 611                 return $this->mLogEventsList->logLine( $row );
 612         }
 613
 614         public function getType() {
 615                 return $this->type;
 616         }
 617
 618         public function getUser() {
 619                 return $this->user;
 620         }
 621
 622         public function getPage() {
 623                 return $this->title;
 624         }
 625
 626         public function getPattern() {
 627                 return $this->pattern;
 628         }
 629
 630         public function getYear() {
 631                 return $this->year;
 632         }
 633
 634         public function getMonth() {
 635                 return $this->month;
 636         }
 637 }
 638
 639 /**
 640  * @Deprecated
 641  * @addtogroup SpecialPage
 642  */
 643 class LogReader {
 644         var $pager;
 645         /**
 646          * @param WebRequest $request For internal use use a FauxRequest object to pass arbitrary parameters.
 647          */
 648         function __construct( $request ) {
 649                 global $wgUser, $wgOut;
 650                 # Get parameters
 651                 $type = $request->getVal( 'type' );
 652                 $user = $request->getText( 'user' );
 653                 $title = $request->getText( 'page' );
 654                 $pattern = $request->getBool( 'pattern' );
 655                 $y = $request->getIntOrNull( 'year' );
 656                 $m = $request->getIntOrNull( 'month' );
 657                 # Don't let the user get stuck with a certain date
 658                 $skip = $request->getText( 'offset' ) || $request->getText( 'dir' ) == 'prev';
 659                 if( $skip ) {
 660                         $y = '';
 661                         $m = '';
 662                 }
 663                 # Use new list class to output results
 664                 $loglist = new LogEventsList( $wgUser->getSkin(), $wgOut, 0 );
 665                 $this->pager = new LogPager( $loglist, $type, $user, $title, $pattern, $y, $m );
 666         }
 667
 668         /**
 669         * Is there at least one row?
 670         * @return bool
 671         */
 672         public function hasRows() {
 673                 return isset($this->pager) ? ($this->pager->getNumRows() > 0) : false;
 674         }
 675 }
 676
 677 /**
 678  * @Deprecated
 679  * @addtogroup SpecialPage
 680  */
 681 class LogViewer {
 682         const NO_ACTION_LINK = 1;
 683         /**
 684          * @var LogReader $reader
 685          */
 686         var $reader;
 687         /**
 688          * @param LogReader &$reader where to get our data from
 689          * @param integer $flags Bitwise combination of flags:
 690          *     LogEventsList::NO_ACTION_LINK   Don't show restore/unblock/block links
 691          */
 692         function __construct( &$reader, $flags = 0 ) {
 693                 global $wgUser;
 694                 $this->reader =& $reader;
 695                 $this->reader->pager->mLogEventsList->flags = $flags;
 696                 # Aliases for shorter code...
 697                 $this->pager =& $this->reader->pager;
 698                 $this->list =& $this->reader->pager->mLogEventsList;
 699         }
 700
 701         /**
 702          * Take over the whole output page in $wgOut with the log display.
 703          */
 704         public function show() {
 705                 # Set title and add header
 706                 $this->list->showHeader( $pager->getType() );
 707                 # Show form options
 708                 $this->list->showOptions( $this->pager->getType(), $this->pager->getUser(), $this->pager->getPage(),
 709                         $this->pager->getPattern(), $this->pager->getYear(), $this->pager->getMonth() );
 710                 # Insert list
 711                 $logBody = $this->pager->getBody();
 712                 if( $logBody ) {
 713                         $wgOut->addHTML(
 714                                 $this->pager->getNavigationBar() .
 715                                 $this->list->beginLogEventsList() .
 716                                 $logBody .
 717                                 $this->list->endLogEventsList() .
 718                                 $this->pager->getNavigationBar()
 719                         );
 720                 } else {
 721                         $wgOut->addWikiMsg( 'logempty' );
 722                 }
 723         }
 724
 725         /**
 726          * Output just the list of entries given by the linked LogReader,
 727          * with extraneous UI elements. Use for displaying log fragments in
 728          * another page (eg at Special:Undelete)
 729          * @param OutputPage $out where to send output
 730          */
 731         public function showList( &$out ) {
 732                 $logBody = $this->pager->getBody();
 733                 if( $logBody ) {
 734                         $out->addHTML(
 735                                 $this->list->beginLogEventsList() .
 736                                 $logBody .
 737                                 $this->list->endLogEventsList()
 738                         );
 739                 } else {
 740                         $out->addWikiMsg( 'logempty' );
 741                 }
 742         }
 743 }