+<?php
+# Copyright (C) 2004 Brion Vibber <brion@pobox.com>, 2008 Aaron Schulz
+# http://www.mediawiki.org/
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 2 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+# http://www.gnu.org/copyleft/gpl.html
+
+class LogEventList {
+ const NO_ACTION_LINK = 1;
+
+ function __construct( &$skin, $flags = 0 ) {
+ $this->skin =& $skin;
+ $this->flags = $flags;
+ $this->preCacheMessages();
+ }
+
+ /**
+ * As we use the same small set of messages in various methods and that
+ * they are called often, we call them once and save them in $this->message
+ */
+ private function preCacheMessages() {
+ // Precache various messages
+ if( !isset( $this->message ) ) {
+ foreach( explode(' ', 'viewpagelogs revhistory filehist rev-delundel' ) as $msg ) {
+ $this->message[$msg] = wfMsgExt( $msg, array( 'escape') );
+ }
+ }
+ }
+
+ /**
+ * Set page title and show header for this log type
+ * @param OutputPage $out where to send output
+ * @param strin $type
+ */
+ public function showHeader( $out, $type ) {
+ if( LogPage::isLogType( $type ) ) {
+ $out->setPageTitle( LogPage::logName( $type ) );
+ $out->addWikiText( LogPage::logHeader( $type ) );
+ }
+ }
+
+ /**
+ * Show options for the log list
+ * @param OutputPage $out where to send output
+ * @param string $type,
+ * @param string $user,
+ * @param string $page,
+ * @param string $pattern
+ */
+ public function showOptions( $out, $type, $user, $page, $pattern ) {
+ global $wgScript, $wgMiserMode;
+ $action = htmlspecialchars( $wgScript );
+ $title = SpecialPage::getTitleFor( 'Log' );
+ $special = htmlspecialchars( $title->getPrefixedDBkey() );
+ $out->addHTML( "<form action=\"$action\" method=\"get\"><fieldset>" .
+ Xml::element( 'legend', array(), wfMsg( 'log' ) ) .
+ Xml::hidden( 'title', $special ) . "\n" .
+ $this->getTypeMenu( $type ) . "\n" .
+ $this->getUserInput( $user ) . "\n" .
+ $this->getTitleInput( $page ) . "\n" .
+ ( !$wgMiserMode ? ($this->getTitlePattern( $pattern )."\n") : "" ) .
+ Xml::submitButton( wfMsg( 'allpagessubmit' ) ) . "\n" .
+ "</fieldset></form>" );
+ }
+
+ /**
+ * @return string Formatted HTML
+ */
+ private function getTypeMenu( $queryType ) {
+ global $wgLogRestrictions, $wgUser;
+
+ $out = "<select name='type'>\n";
+
+ $validTypes = LogPage::validTypes();
+ $m = array(); // Temporary array
+
+ // First pass to load the log names
+ foreach( $validTypes as $type ) {
+ $text = LogPage::logName( $type );
+ $m[$text] = $type;
+ }
+
+ // Second pass to sort by name
+ ksort($m);
+
+ // Third pass generates sorted XHTML content
+ foreach( $m as $text => $type ) {
+ $selected = ($type == $queryType);
+ // Restricted types
+ if ( isset($wgLogRestrictions[$type]) ) {
+ if ( $wgUser->isAllowed( $wgLogRestrictions[$type] ) ) {
+ $out .= Xml::option( $text, $type, $selected ) . "\n";
+ }
+ } else {
+ $out .= Xml::option( $text, $type, $selected ) . "\n";
+ }
+ }
+
+ $out .= '</select>';
+ return $out;
+ }
+
+ /**
+ * @return string Formatted HTML
+ */
+ private function getUserInput( $user ) {
+ return Xml::inputLabel( wfMsg( 'specialloguserlabel' ), 'user', 'user', 12, $user );
+ }
+
+ /**
+ * @return string Formatted HTML
+ */
+ private function getTitleInput( $title ) {
+ return Xml::inputLabel( wfMsg( 'speciallogtitlelabel' ), 'page', 'page', 20, $title );
+ }
+
+ /**
+ * @return boolean Checkbox
+ */
+ private function getTitlePattern( $pattern ) {
+ return Xml::checkLabel( wfMsg( 'log-title-wildcard' ), 'pattern', 'pattern', $pattern );
+ }
+
+ /**
+ * @param Row $row a single row from the result set
+ * @return string Formatted HTML list item
+ * @private
+ */
+ public function logLine( $row ) {
+ global $wgLang, $wgUser, $wgContLang;
+ $skin = $wgUser->getSkin();
+ $title = Title::makeTitle( $row->log_namespace, $row->log_title );
+ $time = $wgLang->timeanddate( wfTimestamp(TS_MW, $row->log_timestamp), true );
+ // Enter the existence or non-existence of this page into the link cache,
+ // for faster makeLinkObj() in LogPage::actionText()
+ $linkCache =& LinkCache::singleton();
+ $linkCache->addLinkObj( $title );
+ // User links
+ if( LogPage::isDeleted($row,LogPage::DELETED_USER) ) {
+ $userLink = '<span class="history-deleted">' . wfMsgHtml( 'rev-deleted-user' ) . '</span>';
+ } else {
+ $userLink = $this->skin->userLink( $row->log_user, $row->user_name ) .
+ $this->skin->userToolLinksRedContribs( $row->log_user, $row->user_name );
+ }
+ // Comment
+ if( $row->log_action == 'create2' ) {
+ $comment = ''; // Suppress from old account creations, useless and can contain incorrect links
+ } else if( LogPage::isDeleted($row,LogPage::DELETED_COMMENT) ) {
+ $comment = '<span class="history-deleted">' . wfMsgHtml('rev-deleted-comment') . '</span>';
+ } else {
+ $comment = $wgContLang->getDirMark() . $this->skin->commentBlock( $row->log_comment );
+ }
+ // Extract extra parameters
+ $paramArray = LogPage::extractParams( $row->log_params );
+ $revert = $del = '';
+ // Some user can hide log items and have review links
+ if( $wgUser->isAllowed( 'deleterevision' ) ) {
+ $del = $this->showhideLinks( $row ) . ' ';
+ }
+ // Add review links and such...
+ if( !($this->flags & self::NO_ACTION_LINK) && !($row->log_deleted & LogPage::DELETED_ACTION) ) {
+ if( $row->log_type == 'move' && isset( $paramArray[0] ) && $wgUser->isAllowed( 'move' ) ) {
+ $destTitle = Title::newFromText( $paramArray[0] );
+ if( $destTitle ) {
+ $revert = '(' . $this->skin->makeKnownLinkObj( SpecialPage::getTitleFor( 'Movepage' ),
+ wfMsg( 'revertmove' ),
+ 'wpOldTitle=' . urlencode( $destTitle->getPrefixedDBkey() ) .
+ '&wpNewTitle=' . urlencode( $title->getPrefixedDBkey() ) .
+ '&wpReason=' . urlencode( wfMsgForContent( 'revertmove' ) ) .
+ '&wpMovetalk=0' ) . ')';
+ }
+ // Show undelete link
+ } else if( $row->log_action == 'delete' && $wgUser->isAllowed( 'delete' ) ) {
+ $revert = '(' . $this->skin->makeKnownLinkObj( SpecialPage::getTitleFor( 'Undelete' ),
+ wfMsg( 'undeletelink' ) ,
+ 'target='. urlencode( $title->getPrefixedDBkey() ) ) . ')';
+ // Show unblock link
+ } else if( $row->log_action == 'block' && $wgUser->isAllowed( 'block' ) ) {
+ $revert = '(' . $this->skin->makeKnownLinkObj( SpecialPage::getTitleFor( 'Ipblocklist' ),
+ wfMsg( 'unblocklink' ),
+ 'action=unblock&ip=' . urlencode( $row->log_title ) ) . ')';
+ // Show change protection link
+ } else if( ( $row->log_action == 'protect' || $row->log_action == 'modify' ) && $wgUser->isAllowed( 'protect' ) ) {
+ $revert = '(' . $this->skin->makeKnownLinkObj( $title, wfMsg( 'protect_change' ), 'action=unprotect' ) . ')';
+ // Show unmerge link
+ } else if ( $row->log_action == 'merge' ) {
+ $merge = SpecialPage::getTitleFor( 'Mergehistory' );
+ $revert = '(' . $this->skin->makeKnownLinkObj( $merge, wfMsg('revertmerge'),
+ wfArrayToCGI(
+ array('target' => $paramArray[0], 'dest' => $title->getPrefixedText(), 'mergepoint' => $paramArray[1] )
+ )
+ ) . ')';
+ // If an edit was hidden from a page give a review link to the history
+ } else if( $row->log_action == 'revision' && $wgUser->isAllowed( 'deleterevision' ) ) {
+ $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
+ // Different revision types use different URL params...
+ $subtype = isset($paramArray[2]) ? $paramArray[1] : '';
+ // Link to each hidden object ID, $paramArray[1] is the url param. List if several...
+ $Ids = explode( ',', $paramArray[2] );
+ if( count($Ids) == 1 ) {
+ $revert = $this->skin->makeKnownLinkObj( $revdel, wfMsgHtml('revdel-restore'),
+ wfArrayToCGI( array('target' => $paramArray[0], $paramArray[1] => $Ids[0] ) ) );
+ } else {
+ $revert .= wfMsgHtml('revdel-restore').':';
+ foreach( $Ids as $n => $id ) {
+ $revert .= ' '.$this->skin->makeKnownLinkObj( $revdel, '#'.($n+1),
+ wfArrayToCGI( array('target' => $paramArray[0], $paramArray[1] => $id ) ) );
+ }
+ }
+ $revert = "($revert)";
+ // Hidden log items, give review link
+ } else if( $row->log_action == 'event' && $wgUser->isAllowed( 'deleterevision' ) ) {
+ $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
+ $revert .= wfMsgHtml('revdel-restore');
+ $Ids = explode( ',', $paramArray[0] );
+ // Link to each hidden object ID, $paramArray[1] is the url param. List if several...
+ if( count($Ids) == 1 ) {
+ $revert = $this->skin->makeKnownLinkObj( $revdel, wfMsgHtml('revdel-restore'),
+ wfArrayToCGI( array('logid' => $Ids[0] ) ) );
+ } else {
+ foreach( $Ids as $n => $id ) {
+ $revert .= $this->skin->makeKnownLinkObj( $revdel, '#'.($n+1),
+ wfArrayToCGI( array('logid' => $id ) ) );
+ }
+ }
+ $revert = "($revert)";
+ } else {
+ wfRunHooks( 'LogLine', array( $row->log_type, $row->log_action, $title, $paramArray,
+ &$comment, &$revert, $row->log_timestamp ) );
+ // wfDebug( "Invoked LogLine hook for " $row->log_type . ", " . $row->log_action . "\n" );
+ // Do nothing. The implementation is handled by the hook modifiying the passed-by-ref parameters.
+ }
+ }
+ // Event description
+ if( $row->log_deleted & LogPage::DELETED_ACTION ) {
+ $action = '<span class="history-deleted">' . wfMsgHtml('rev-deleted-event') . '</span>';
+ } else {
+ $action = LogPage::actionText( $row->log_type, $row->log_action, $title, $this->skin, $paramArray, true );
+ }
+
+ return "<li>$del$time $userLink $action $comment $revert</li>";
+ }
+
+ /**
+ * @param Row $row
+ * @private
+ */
+ private function showhideLinks( $row ) {
+ global $wgAllowLogDeletion;
+
+ if( !$wgAllowLogDeletion )
+ return "";
+
+ $revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
+ // If event was hidden from sysops
+ if( !LogPage::userCan( $row, Revision::DELETED_RESTRICTED ) ) {
+ $del = $this->message['rev-delundel'];
+ } else if( $row->log_type == 'suppress' ) {
+ return ''; // No one should be hiding from the oversight log
+ } else {
+ $del = $this->skin->makeKnownLinkObj( $revdel, $this->message['rev-delundel'], 'logid='.$row->log_id );
+ // Bolden oversighted content
+ if( LogPage::isDeleted( $row, Revision::DELETED_RESTRICTED ) )
+ $del = "<strong>$del</strong>";
+ }
+ return "<tt>(<small>$del</small>)</tt>";
+ }
+}
+
+
+/**
+ *
+ * @addtogroup SpecialPage
+ */
+class LogReader {
+ const NO_ACTION_LINK = 1;
+
+ var $db, $joinClauses, $whereClauses;
+ var $type = '', $user = '', $title = null, $pattern = false;
+
+ /**
+ * @param WebRequest $request For internal use use a FauxRequest object to pass arbitrary parameters.
+ */
+ function LogReader( $request ) {
+ $this->db = wfGetDB( DB_SLAVE );
+ $this->setupQuery( $request );
+ }
+
+ /**
+ * Basic setup and applies the limiting factors from the WebRequest object.
+ * @param WebRequest $request
+ * @private
+ */
+ function setupQuery( $request ) {
+ $page = $this->db->tableName( 'page' );
+ $user = $this->db->tableName( 'user' );
+ $this->joinClauses = array(
+ "LEFT OUTER JOIN $page ON log_namespace=page_namespace AND log_title=page_title",
+ "INNER JOIN $user ON user_id=log_user" );
+ $this->whereClauses = array();
+
+ $this->limitType( $request->getVal( 'type' ) );
+ $this->limitUser( $request->getText( 'user' ) );
+ $this->limitTitle( $request->getText( 'page' ) , $request->getBool( 'pattern' ) );
+ $this->limitTime( $request->getVal( 'from' ), '>=' );
+ $this->limitTime( $request->getVal( 'until' ), '<=' );
+
+ list( $this->limit, $this->offset ) = $request->getLimitOffset();
+
+ // XXX This all needs to use Pager, ugly hack for now.
+ global $wgMiserMode;
+ if( $wgMiserMode )
+ $this->offset = min( $this->offset, 10000 );
+ }
+
+ /**
+ * Set the log reader to return only entries of the given type.
+ * Type restrictions enforced here
+ * @param string $type A log type ('upload', 'delete', etc)
+ * @private
+ */
+ function limitType( $type ) {
+ global $wgLogRestrictions, $wgUser;
+ // Reset the array, clears extra "where" clauses when $par is used
+ $this->whereClauses = $hiddenLogs = array();
+ // Nothing to show the user requested a log they can't see
+ if( isset($wgLogRestrictions[$type]) && !$wgUser->isAllowed($wgLogRestrictions[$type]) ) {
+ $this->whereClauses[] = "1 = 0";
+ return false;
+ }
+ // Don't show private logs to unpriviledged users
+ foreach( $wgLogRestrictions as $logtype => $right ) {
+ if( !$wgUser->isAllowed($right) || empty($type) ) {
+ $safetype = $this->db->strencode( $logtype );
+ $hiddenLogs[] = "'$safetype'";
+ }
+ }
+ if( !empty($hiddenLogs) ) {
+ $this->whereClauses[] = 'log_type NOT IN('.implode(',',$hiddenLogs).')';
+ }
+
+ if( empty($type) ) {
+ return false;
+ }
+ $this->type = $type;
+ $safetype = $this->db->strencode( $type );
+ $this->whereClauses[] = "log_type='$safetype'";
+ }
+
+ /**
+ * Set the log reader to return only entries by the given user.
+ * @param string $name (In)valid user name
+ * @private
+ */
+ function limitUser( $name ) {
+ if ( $name == '' )
+ return false;
+ $usertitle = Title::makeTitleSafe( NS_USER, $name );
+ if ( is_null( $usertitle ) )
+ return false;
+ $this->user = $usertitle->getText();
+
+ /* Fetch userid at first, if known, provides awesome query plan afterwards */
+ $userid = $this->db->selectField('user','user_id',array('user_name'=>$this->user));
+ if (!$userid)
+ /* It should be nicer to abort query at all,
+ but for now it won't pass anywhere behind the optimizer */
+ $this->whereClauses[] = "NULL";
+ else
+ $this->whereClauses[] = "log_user=$userid";
+ }
+
+ /**
+ * Set the log reader to return only entries affecting the given page.
+ * (For the block and rights logs, this is a user page.)
+ * @param string $page Title name as text
+ * @private
+ */
+ function limitTitle( $page , $pattern ) {
+ global $wgMiserMode;
+
+ $title = Title::newFromText( $page );
+
+ if( strlen( $page ) == 0 || !$title instanceof Title )
+ return false;
+
+ $this->title =& $title;
+ $this->pattern = $pattern;
+ $ns = $title->getNamespace();
+ if ( $pattern && !$wgMiserMode ) {
+ $safetitle = $this->db->escapeLike( $title->getDBkey() ); // use escapeLike to avoid expensive search patterns like 't%st%'
+ $this->whereClauses[] = "log_namespace=$ns AND log_title LIKE '$safetitle%'";
+ } else {
+ $safetitle = $this->db->strencode( $title->getDBkey() );
+ $this->whereClauses[] = "log_namespace=$ns AND log_title = '$safetitle'";
+ }
+ }
+
+ /**
+ * Set the log reader to return only entries in a given time range.
+ * @param string $time Timestamp of one endpoint
+ * @param string $direction either ">=" or "<=" operators
+ * @private
+ */
+ function limitTime( $time, $direction ) {
+ # Direction should be a comparison operator
+ if( empty( $time ) ) {
+ return false;
+ }
+ $safetime = $this->db->strencode( wfTimestamp( TS_MW, $time ) );
+ $this->whereClauses[] = "log_timestamp $direction '$safetime'";
+ }
+
+ /**
+ * Build an SQL query from all the set parameters.
+ * @return string the SQL query
+ * @private
+ */
+ function getQuery() {
+ global $wgAllowLogDeletion;
+
+ $logging = $this->db->tableName( "logging" );
+ $sql = "SELECT /*! STRAIGHT_JOIN */ log_type, log_action, log_timestamp,
+ log_user, user_name, log_namespace, log_title, page_id,
+ log_comment, log_params, log_deleted ";
+ if( $wgAllowLogDeletion )
+ $sql .= ", log_id ";
+
+ $sql .= "FROM $logging ";
+ if( !empty( $this->joinClauses ) ) {
+ $sql .= implode( ' ', $this->joinClauses );
+ }
+ if( !empty( $this->whereClauses ) ) {
+ $sql .= " WHERE " . implode( ' AND ', $this->whereClauses );
+ }
+ $sql .= " ORDER BY log_timestamp DESC ";
+ $sql = $this->db->limitResult($sql, $this->limit, $this->offset );
+ return $sql;
+ }
+
+ /**
+ * Execute the query and start returning results.
+ * @return ResultWrapper result object to return the relevant rows
+ */
+ function getRows() {
+ $res = $this->db->query( $this->getQuery(), __METHOD__ );
+ return $this->db->resultObject( $res );
+ }
+
+ /**
+ * @return string The query type that this LogReader has been limited to.
+ */
+ function queryType() {
+ return $this->type;
+ }
+
+ /**
+ * @return string The username type that this LogReader has been limited to, if any.
+ */
+ function queryUser() {
+ return $this->user;
+ }
+
+ /**
+ * @return boolean The checkbox, if titles should be searched by a pattern too
+ */
+ function queryPattern() {
+ return $this->pattern;
+ }
+
+ /**
+ * @return string The text of the title that this LogReader has been limited to.
+ */
+ function queryTitle() {
+ if( is_null( $this->title ) ) {
+ return '';
+ } else {
+ return $this->title->getPrefixedText();
+ }
+ }
+
+ /**
+ * Is there at least one row?
+ *
+ * @return bool
+ */
+ public function hasRows() {
+ # Little hack...
+ $limit = $this->limit;
+ $this->limit = 1;
+ $res = $this->db->query( $this->getQuery() );
+ $this->limit = $limit;
+ $ret = $this->db->numRows( $res ) > 0;
+ $this->db->freeResult( $res );
+ return $ret;
+ }
+
+}
+
+/**
+ *
+ * @addtogroup SpecialPage
+ */
+class LogViewer {
+ /**
+ * @var LogReader $reader
+ */
+ var $reader;
+ var $numResults = 0;
+ var $flags = 0;
+
+ /**
+ * @param LogReader &$reader where to get our data from
+ * @param integer $flags Bitwise combination of flags:
+ * LogEventList::NO_ACTION_LINK Don't show restore/unblock/block links
+ */
+ function LogViewer( &$reader, $flags = 0 ) {
+ global $wgUser;
+ $this->skin = $wgUser->getSkin();
+ $this->reader =& $reader;
+ $this->flags = $flags;
+ $this->logList = new LogEventList( $wgUser->getSkin(), $flags );
+ }
+
+ /**
+ * Take over the whole output page in $wgOut with the log display.
+ */
+ function show() {
+ global $wgOut;
+ $this->logList->showHeader( $wgOut, $this->reader->queryType() );
+ $this->logList->showOptions( $wgOut, $this->reader->queryType(), $this->reader->queryUser(),
+ $this->reader->queryTitle(), $this->reader->queryPattern() );
+ $result = $this->getLogRows();
+ if ( $this->numResults > 0 ) {
+ $this->showPrevNext( $wgOut );
+ $this->doShowList( $wgOut, $result );
+ $this->showPrevNext( $wgOut );
+ } else {
+ $this->showError( $wgOut );
+ }
+ }
+
+ /**
+ * Load the data from the linked LogReader
+ * Preload the link cache
+ * Initialise numResults
+ *
+ * Must be called before calling showPrevNext
+ *
+ * @return object database result set
+ */
+ function getLogRows() {
+ $result = $this->reader->getRows();
+ $this->numResults = 0;
+
+ // Fetch results and form a batch link existence query
+ $batch = new LinkBatch;
+ while ( $s = $result->fetchObject() ) {
+ // User link
+ $batch->addObj( Title::makeTitleSafe( NS_USER, $s->user_name ) );
+ $batch->addObj( Title::makeTitleSafe( NS_USER_TALK, $s->user_name ) );
+
+ // Move destination link
+ if ( $s->log_type == 'move' ) {
+ $paramArray = LogPage::extractParams( $s->log_params );
+ $title = Title::newFromText( $paramArray[0] );
+ $batch->addObj( $title );
+ }
+ ++$this->numResults;
+ }
+ $batch->execute();
+
+ return $result;
+ }
+
+
+ /**
+ * Output just the list of entries given by the linked LogReader,
+ * with extraneous UI elements. Use for displaying log fragments in
+ * another page (eg at Special:Undelete)
+ * @param OutputPage $out where to send output
+ */
+ function showList( &$out ) {
+ $result = $this->getLogRows();
+ if ( $this->numResults > 0 ) {
+ $this->doShowList( $out, $result );
+ } else {
+ $this->showError( $out );
+ }
+ }
+
+ function doShowList( &$out, $result ) {
+ // Rewind result pointer and go through it again, making the HTML
+ $html = "\n<ul>\n";
+ $result->seek( 0 );
+ while( $s = $result->fetchObject() ) {
+ $html .= $this->logList->logLine( $s );
+ }
+ $html .= "\n</ul>\n";
+ $out->addHTML( $html );
+ $result->free();
+ }
+
+ function showError( &$out ) {
+ $out->addWikiMsg( 'logempty' );
+ }
+
+ /**
+ * @param OutputPage &$out where to send output
+ * @private
+ */
+ function showPrevNext( &$out ) {
+ global $wgContLang,$wgRequest;
+ $pieces = array();
+ $pieces[] = 'type=' . urlencode( $this->reader->queryType() );
+ $pieces[] = 'user=' . urlencode( $this->reader->queryUser() );
+ $pieces[] = 'page=' . urlencode( $this->reader->queryTitle() );
+ $pieces[] = 'pattern=' . urlencode( $this->reader->queryPattern() );
+ $bits = implode( '&', $pieces );
+ list( $limit, $offset ) = $wgRequest->getLimitOffset();
+
+ # TODO: use timestamps instead of offsets to make it more natural
+ # to go huge distances in time
+ $html = wfViewPrevNext( $offset, $limit,
+ $wgContLang->specialpage( 'Log' ),
+ $bits,
+ $this->numResults < $limit);
+ $out->addHTML( '<p>' . $html . '</p>' );
+ }
+}
+