Your IP : 172.69.17.155
<?php
/**
* Implements Special:Undelete
*
* 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
*
* @file
* @ingroup SpecialPage
*/
/**
* Used to show archived pages and eventually restore them.
*
* @ingroup SpecialPage
*/
class PageArchive {
/**
* @var Title
*/
protected $title;
/**
* @var Status
*/
protected $fileStatus;
/**
* @var Status
*/
protected $revisionStatus;
function __construct( $title ) {
if( is_null( $title ) ) {
throw new MWException( __METHOD__ . ' given a null title.' );
}
$this->title = $title;
}
/**
* List all deleted pages recorded in the archive table. Returns result
* wrapper with (ar_namespace, ar_title, count) fields, ordered by page
* namespace/title.
*
* @return ResultWrapper
*/
public static function listAllPages() {
$dbr = wfGetDB( DB_SLAVE );
return self::listPages( $dbr, '' );
}
/**
* List deleted pages recorded in the archive table matching the
* given title prefix.
* Returns result wrapper with (ar_namespace, ar_title, count) fields.
*
* @param string $prefix title prefix
* @return ResultWrapper
*/
public static function listPagesByPrefix( $prefix ) {
$dbr = wfGetDB( DB_SLAVE );
$title = Title::newFromText( $prefix );
if( $title ) {
$ns = $title->getNamespace();
$prefix = $title->getDBkey();
} else {
// Prolly won't work too good
// @todo handle bare namespace names cleanly?
$ns = 0;
}
$conds = array(
'ar_namespace' => $ns,
'ar_title' . $dbr->buildLike( $prefix, $dbr->anyString() ),
);
return self::listPages( $dbr, $conds );
}
/**
* @param $dbr DatabaseBase
* @param $condition
* @return bool|ResultWrapper
*/
protected static function listPages( $dbr, $condition ) {
return $dbr->resultObject(
$dbr->select(
array( 'archive' ),
array(
'ar_namespace',
'ar_title',
'count' => 'COUNT(*)'
),
$condition,
__METHOD__,
array(
'GROUP BY' => array( 'ar_namespace', 'ar_title' ),
'ORDER BY' => array( 'ar_namespace', 'ar_title' ),
'LIMIT' => 100,
)
)
);
}
/**
* List the revisions of the given page. Returns result wrapper with
* (ar_minor_edit, ar_timestamp, ar_user, ar_user_text, ar_comment) fields.
*
* @return ResultWrapper
*/
function listRevisions() {
global $wgContentHandlerUseDB;
$dbr = wfGetDB( DB_SLAVE );
$fields = array(
'ar_minor_edit', 'ar_timestamp', 'ar_user', 'ar_user_text',
'ar_comment', 'ar_len', 'ar_deleted', 'ar_rev_id', 'ar_sha1',
);
if ( $wgContentHandlerUseDB ) {
$fields[] = 'ar_content_format';
$fields[] = 'ar_content_model';
}
$res = $dbr->select( 'archive',
$fields,
array( 'ar_namespace' => $this->title->getNamespace(),
'ar_title' => $this->title->getDBkey() ),
__METHOD__,
array( 'ORDER BY' => 'ar_timestamp DESC' ) );
$ret = $dbr->resultObject( $res );
return $ret;
}
/**
* List the deleted file revisions for this page, if it's a file page.
* Returns a result wrapper with various filearchive fields, or null
* if not a file page.
*
* @return ResultWrapper
* @todo Does this belong in Image for fuller encapsulation?
*/
function listFiles() {
if( $this->title->getNamespace() == NS_FILE ) {
$dbr = wfGetDB( DB_SLAVE );
$res = $dbr->select(
'filearchive',
ArchivedFile::selectFields(),
array( 'fa_name' => $this->title->getDBkey() ),
__METHOD__,
array( 'ORDER BY' => 'fa_timestamp DESC' ) );
$ret = $dbr->resultObject( $res );
return $ret;
}
return null;
}
/**
* Return a Revision object containing data for the deleted revision.
* Note that the result *may* or *may not* have a null page ID.
*
* @param $timestamp String
* @return Revision
*/
function getRevision( $timestamp ) {
global $wgContentHandlerUseDB;
$dbr = wfGetDB( DB_SLAVE );
$fields = array(
'ar_rev_id',
'ar_text',
'ar_comment',
'ar_user',
'ar_user_text',
'ar_timestamp',
'ar_minor_edit',
'ar_flags',
'ar_text_id',
'ar_deleted',
'ar_len',
'ar_sha1',
);
if ( $wgContentHandlerUseDB ) {
$fields[] = 'ar_content_format';
$fields[] = 'ar_content_model';
}
$row = $dbr->selectRow( 'archive',
$fields,
array( 'ar_namespace' => $this->title->getNamespace(),
'ar_title' => $this->title->getDBkey(),
'ar_timestamp' => $dbr->timestamp( $timestamp ) ),
__METHOD__ );
if( $row ) {
return Revision::newFromArchiveRow( $row, array( 'title' => $this->title ) );
} else {
return null;
}
}
/**
* Return the most-previous revision, either live or deleted, against
* the deleted revision given by timestamp.
*
* May produce unexpected results in case of history merges or other
* unusual time issues.
*
* @param $timestamp String
* @return Revision or null
*/
function getPreviousRevision( $timestamp ) {
$dbr = wfGetDB( DB_SLAVE );
// Check the previous deleted revision...
$row = $dbr->selectRow( 'archive',
'ar_timestamp',
array( 'ar_namespace' => $this->title->getNamespace(),
'ar_title' => $this->title->getDBkey(),
'ar_timestamp < ' .
$dbr->addQuotes( $dbr->timestamp( $timestamp ) ) ),
__METHOD__,
array(
'ORDER BY' => 'ar_timestamp DESC',
'LIMIT' => 1 ) );
$prevDeleted = $row ? wfTimestamp( TS_MW, $row->ar_timestamp ) : false;
$row = $dbr->selectRow( array( 'page', 'revision' ),
array( 'rev_id', 'rev_timestamp' ),
array(
'page_namespace' => $this->title->getNamespace(),
'page_title' => $this->title->getDBkey(),
'page_id = rev_page',
'rev_timestamp < ' .
$dbr->addQuotes( $dbr->timestamp( $timestamp ) ) ),
__METHOD__,
array(
'ORDER BY' => 'rev_timestamp DESC',
'LIMIT' => 1 ) );
$prevLive = $row ? wfTimestamp( TS_MW, $row->rev_timestamp ) : false;
$prevLiveId = $row ? intval( $row->rev_id ) : null;
if( $prevLive && $prevLive > $prevDeleted ) {
// Most prior revision was live
return Revision::newFromId( $prevLiveId );
} elseif( $prevDeleted ) {
// Most prior revision was deleted
return $this->getRevision( $prevDeleted );
} else {
// No prior revision on this page.
return null;
}
}
/**
* Get the text from an archive row containing ar_text, ar_flags and ar_text_id
*
* @param $row Object: database row
* @return Revision
*/
function getTextFromRow( $row ) {
if( is_null( $row->ar_text_id ) ) {
// An old row from MediaWiki 1.4 or previous.
// Text is embedded in this row in classic compression format.
return Revision::getRevisionText( $row, 'ar_' );
} else {
// New-style: keyed to the text storage backend.
$dbr = wfGetDB( DB_SLAVE );
$text = $dbr->selectRow( 'text',
array( 'old_text', 'old_flags' ),
array( 'old_id' => $row->ar_text_id ),
__METHOD__ );
return Revision::getRevisionText( $text );
}
}
/**
* Fetch (and decompress if necessary) the stored text of the most
* recently edited deleted revision of the page.
*
* If there are no archived revisions for the page, returns NULL.
*
* @return String
*/
function getLastRevisionText() {
$dbr = wfGetDB( DB_SLAVE );
$row = $dbr->selectRow( 'archive',
array( 'ar_text', 'ar_flags', 'ar_text_id' ),
array( 'ar_namespace' => $this->title->getNamespace(),
'ar_title' => $this->title->getDBkey() ),
__METHOD__,
array( 'ORDER BY' => 'ar_timestamp DESC' ) );
if( $row ) {
return $this->getTextFromRow( $row );
} else {
return null;
}
}
/**
* Quick check if any archived revisions are present for the page.
*
* @return Boolean
*/
function isDeleted() {
$dbr = wfGetDB( DB_SLAVE );
$n = $dbr->selectField( 'archive', 'COUNT(ar_title)',
array( 'ar_namespace' => $this->title->getNamespace(),
'ar_title' => $this->title->getDBkey() ),
__METHOD__
);
return ( $n > 0 );
}
/**
* Restore the given (or all) text and file revisions for the page.
* Once restored, the items will be removed from the archive tables.
* The deletion log will be updated with an undeletion notice.
*
* @param array $timestamps pass an empty array to restore all revisions, otherwise list the ones to undelete.
* @param $comment String
* @param $fileVersions Array
* @param $unsuppress Boolean
* @param $user User doing the action, or null to use $wgUser
*
* @return array(number of file revisions restored, number of image revisions restored, log message)
* on success, false on failure
*/
function undelete( $timestamps, $comment = '', $fileVersions = array(), $unsuppress = false, User $user = null ) {
// If both the set of text revisions and file revisions are empty,
// restore everything. Otherwise, just restore the requested items.
$restoreAll = empty( $timestamps ) && empty( $fileVersions );
$restoreText = $restoreAll || !empty( $timestamps );
$restoreFiles = $restoreAll || !empty( $fileVersions );
if( $restoreFiles && $this->title->getNamespace() == NS_FILE ) {
$img = wfLocalFile( $this->title );
$this->fileStatus = $img->restore( $fileVersions, $unsuppress );
if ( !$this->fileStatus->isOK() ) {
return false;
}
$filesRestored = $this->fileStatus->successCount;
} else {
$filesRestored = 0;
}
if( $restoreText ) {
$this->revisionStatus = $this->undeleteRevisions( $timestamps, $unsuppress, $comment );
if( !$this->revisionStatus->isOK() ) {
return false;
}
$textRestored = $this->revisionStatus->getValue();
} else {
$textRestored = 0;
}
// Touch the log!
if( $textRestored && $filesRestored ) {
$reason = wfMessage( 'undeletedrevisions-files' )
->numParams( $textRestored, $filesRestored )->inContentLanguage()->text();
} elseif( $textRestored ) {
$reason = wfMessage( 'undeletedrevisions' )->numParams( $textRestored )
->inContentLanguage()->text();
} elseif( $filesRestored ) {
$reason = wfMessage( 'undeletedfiles' )->numParams( $filesRestored )
->inContentLanguage()->text();
} else {
wfDebug( "Undelete: nothing undeleted...\n" );
return false;
}
if( trim( $comment ) != '' ) {
$reason .= wfMessage( 'colon-separator' )->inContentLanguage()->text() . $comment;
}
if ( $user === null ) {
global $wgUser;
$user = $wgUser;
}
$logEntry = new ManualLogEntry( 'delete', 'restore' );
$logEntry->setPerformer( $user );
$logEntry->setTarget( $this->title );
$logEntry->setComment( $reason );
wfRunHooks( 'ArticleUndeleteLogEntry', array( $this, &$logEntry, $user ) );
$logid = $logEntry->insert();
$logEntry->publish( $logid );
return array( $textRestored, $filesRestored, $reason );
}
/**
* This is the meaty bit -- restores archived revisions of the given page
* to the cur/old tables. If the page currently exists, all revisions will
* be stuffed into old, otherwise the most recent will go into cur.
*
* @param array $timestamps pass an empty array to restore all revisions, otherwise list the ones to undelete.
* @param $unsuppress Boolean: remove all ar_deleted/fa_deleted restrictions of seletected revs
*
* @param $comment String
* @throws ReadOnlyError
* @return Status, containing the number of revisions restored on success
*/
private function undeleteRevisions( $timestamps, $unsuppress = false, $comment = '' ) {
global $wgContentHandlerUseDB;
if ( wfReadOnly() ) {
throw new ReadOnlyError();
}
$restoreAll = empty( $timestamps );
$dbw = wfGetDB( DB_MASTER );
# Does this page already exist? We'll have to update it...
$article = WikiPage::factory( $this->title );
# Load latest data for the current page (bug 31179)
$article->loadPageData( 'fromdbmaster' );
$oldcountable = $article->isCountable();
$page = $dbw->selectRow( 'page',
array( 'page_id', 'page_latest' ),
array( 'page_namespace' => $this->title->getNamespace(),
'page_title' => $this->title->getDBkey() ),
__METHOD__,
array( 'FOR UPDATE' ) // lock page
);
if( $page ) {
$makepage = false;
# Page already exists. Import the history, and if necessary
# we'll update the latest revision field in the record.
$previousRevId = $page->page_latest;
# Get the time span of this page
$previousTimestamp = $dbw->selectField( 'revision', 'rev_timestamp',
array( 'rev_id' => $previousRevId ),
__METHOD__ );
if( $previousTimestamp === false ) {
wfDebug( __METHOD__ . ": existing page refers to a page_latest that does not exist\n" );
$status = Status::newGood( 0 );
$status->warning( 'undeleterevision-missing' );
return $status;
}
} else {
# Have to create a new article...
$makepage = true;
$previousRevId = 0;
$previousTimestamp = 0;
}
if( $restoreAll ) {
$oldones = '1 = 1'; # All revisions...
} else {
$oldts = implode( ',',
array_map( array( &$dbw, 'addQuotes' ),
array_map( array( &$dbw, 'timestamp' ),
$timestamps ) ) );
$oldones = "ar_timestamp IN ( {$oldts} )";
}
$fields = array(
'ar_rev_id',
'ar_text',
'ar_comment',
'ar_user',
'ar_user_text',
'ar_timestamp',
'ar_minor_edit',
'ar_flags',
'ar_text_id',
'ar_deleted',
'ar_page_id',
'ar_len',
'ar_sha1'
);
if ( $wgContentHandlerUseDB ) {
$fields[] = 'ar_content_format';
$fields[] = 'ar_content_model';
}
/**
* Select each archived revision...
*/
$result = $dbw->select( 'archive',
$fields,
/* WHERE */ array(
'ar_namespace' => $this->title->getNamespace(),
'ar_title' => $this->title->getDBkey(),
$oldones ),
__METHOD__,
/* options */ array( 'ORDER BY' => 'ar_timestamp' )
);
$ret = $dbw->resultObject( $result );
$rev_count = $dbw->numRows( $result );
if( !$rev_count ) {
wfDebug( __METHOD__ . ": no revisions to restore\n" );
$status = Status::newGood( 0 );
$status->warning( "undelete-no-results" );
return $status;
}
$ret->seek( $rev_count - 1 ); // move to last
$row = $ret->fetchObject(); // get newest archived rev
$ret->seek( 0 ); // move back
// grab the content to check consistency with global state before restoring the page.
$revision = Revision::newFromArchiveRow( $row,
array(
'title' => $article->getTitle(), // used to derive default content model
)
);
$user = User::newFromName( $revision->getRawUserText(), false );
$content = $revision->getContent( Revision::RAW );
//NOTE: article ID may not be known yet. prepareSave() should not modify the database.
$status = $content->prepareSave( $article, 0, -1, $user );
if ( !$status->isOK() ) {
return $status;
}
if( $makepage ) {
// Check the state of the newest to-be version...
if( !$unsuppress && ( $row->ar_deleted & Revision::DELETED_TEXT ) ) {
return Status::newFatal( "undeleterevdel" );
}
// Safe to insert now...
$newid = $article->insertOn( $dbw );
$pageId = $newid;
} else {
// Check if a deleted revision will become the current revision...
if( $row->ar_timestamp > $previousTimestamp ) {
// Check the state of the newest to-be version...
if( !$unsuppress && ( $row->ar_deleted & Revision::DELETED_TEXT ) ) {
return Status::newFatal( "undeleterevdel" );
}
}
$newid = false;
$pageId = $article->getId();
}
$revision = null;
$restored = 0;
foreach ( $ret as $row ) {
// Check for key dupes due to shitty archive integrity.
if( $row->ar_rev_id ) {
$exists = $dbw->selectField( 'revision', '1',
array( 'rev_id' => $row->ar_rev_id ), __METHOD__ );
if( $exists ) {
continue; // don't throw DB errors
}
}
// Insert one revision at a time...maintaining deletion status
// unless we are specifically removing all restrictions...
$revision = Revision::newFromArchiveRow( $row,
array(
'page' => $pageId,
'title' => $this->title,
'deleted' => $unsuppress ? 0 : $row->ar_deleted
) );
$revision->insertOn( $dbw );
$restored++;
wfRunHooks( 'ArticleRevisionUndeleted', array( &$this->title, $revision, $row->ar_page_id ) );
}
# Now that it's safely stored, take it out of the archive
$dbw->delete( 'archive',
/* WHERE */ array(
'ar_namespace' => $this->title->getNamespace(),
'ar_title' => $this->title->getDBkey(),
$oldones ),
__METHOD__ );
// Was anything restored at all?
if ( $restored == 0 ) {
return Status::newGood( 0 );
}
$created = (bool)$newid;
// Attach the latest revision to the page...
$wasnew = $article->updateIfNewerOn( $dbw, $revision, $previousRevId );
if ( $created || $wasnew ) {
// Update site stats, link tables, etc
$user = User::newFromName( $revision->getRawUserText(), false );
$article->doEditUpdates( $revision, $user, array( 'created' => $created, 'oldcountable' => $oldcountable ) );
}
wfRunHooks( 'ArticleUndelete', array( &$this->title, $created, $comment ) );
if( $this->title->getNamespace() == NS_FILE ) {
$update = new HTMLCacheUpdate( $this->title, 'imagelinks' );
$update->doUpdate();
}
return Status::newGood( $restored );
}
/**
* @return Status
*/
function getFileStatus() { return $this->fileStatus; }
/**
* @return Status
*/
function getRevisionStatus() { return $this->revisionStatus; }
}
/**
* Special page allowing users with the appropriate permissions to view
* and restore deleted content.
*
* @ingroup SpecialPage
*/
class SpecialUndelete extends SpecialPage {
var $mAction, $mTarget, $mTimestamp, $mRestore, $mInvert, $mFilename;
var $mTargetTimestamp, $mAllowed, $mCanView, $mComment, $mToken;
/**
* @var Title
*/
var $mTargetObj;
function __construct() {
parent::__construct( 'Undelete', 'deletedhistory' );
}
function loadRequest( $par ) {
$request = $this->getRequest();
$user = $this->getUser();
$this->mAction = $request->getVal( 'action' );
if ( $par !== null && $par !== '' ) {
$this->mTarget = $par;
} else {
$this->mTarget = $request->getVal( 'target' );
}
$this->mTargetObj = null;
if ( $this->mTarget !== null && $this->mTarget !== '' ) {
$this->mTargetObj = Title::newFromURL( $this->mTarget );
}
$this->mSearchPrefix = $request->getText( 'prefix' );
$time = $request->getVal( 'timestamp' );
$this->mTimestamp = $time ? wfTimestamp( TS_MW, $time ) : '';
$this->mFilename = $request->getVal( 'file' );
$posted = $request->wasPosted() &&
$user->matchEditToken( $request->getVal( 'wpEditToken' ) );
$this->mRestore = $request->getCheck( 'restore' ) && $posted;
$this->mInvert = $request->getCheck( 'invert' ) && $posted;
$this->mPreview = $request->getCheck( 'preview' ) && $posted;
$this->mDiff = $request->getCheck( 'diff' );
$this->mDiffOnly = $request->getBool( 'diffonly', $this->getUser()->getOption( 'diffonly' ) );
$this->mComment = $request->getText( 'wpComment' );
$this->mUnsuppress = $request->getVal( 'wpUnsuppress' ) && $user->isAllowed( 'suppressrevision' );
$this->mToken = $request->getVal( 'token' );
if ( $user->isAllowed( 'undelete' ) && !$user->isBlocked() ) {
$this->mAllowed = true; // user can restore
$this->mCanView = true; // user can view content
} elseif ( $user->isAllowed( 'deletedtext' ) ) {
$this->mAllowed = false; // user cannot restore
$this->mCanView = true; // user can view content
$this->mRestore = false;
} else { // user can only view the list of revisions
$this->mAllowed = false;
$this->mCanView = false;
$this->mTimestamp = '';
$this->mRestore = false;
}
if( $this->mRestore || $this->mInvert ) {
$timestamps = array();
$this->mFileVersions = array();
foreach( $request->getValues() as $key => $val ) {
$matches = array();
if( preg_match( '/^ts(\d{14})$/', $key, $matches ) ) {
array_push( $timestamps, $matches[1] );
}
if( preg_match( '/^fileid(\d+)$/', $key, $matches ) ) {
$this->mFileVersions[] = intval( $matches[1] );
}
}
rsort( $timestamps );
$this->mTargetTimestamp = $timestamps;
}
}
function execute( $par ) {
$this->checkPermissions();
$user = $this->getUser();
$this->setHeaders();
$this->outputHeader();
$this->loadRequest( $par );
$out = $this->getOutput();
if ( is_null( $this->mTargetObj ) ) {
$out->addWikiMsg( 'undelete-header' );
# Not all users can just browse every deleted page from the list
if ( $user->isAllowed( 'browsearchive' ) ) {
$this->showSearchForm();
}
return;
}
if ( $this->mAllowed ) {
$out->setPageTitle( $this->msg( 'undeletepage' ) );
} else {
$out->setPageTitle( $this->msg( 'viewdeletedpage' ) );
}
$this->getSkin()->setRelevantTitle( $this->mTargetObj );
if ( $this->mTimestamp !== '' ) {
$this->showRevision( $this->mTimestamp );
} elseif ( $this->mFilename !== null ) {
$file = new ArchivedFile( $this->mTargetObj, '', $this->mFilename );
// Check if user is allowed to see this file
if ( !$file->exists() ) {
$out->addWikiMsg( 'filedelete-nofile', $this->mFilename );
} elseif ( !$file->userCan( File::DELETED_FILE, $user ) ) {
if( $file->isDeleted( File::DELETED_RESTRICTED ) ) {
throw new PermissionsError( 'suppressrevision' );
} else {
throw new PermissionsError( 'deletedtext' );
}
} elseif ( !$user->matchEditToken( $this->mToken, $this->mFilename ) ) {
$this->showFileConfirmationForm( $this->mFilename );
} else {
$this->showFile( $this->mFilename );
}
} elseif ( $this->mRestore && $this->mAction == 'submit' ) {
$this->undelete();
} else {
$this->showHistory();
}
}
function showSearchForm() {
global $wgScript;
$out = $this->getOutput();
$out->setPageTitle( $this->msg( 'undelete-search-title' ) );
$out->addHTML(
Xml::openElement( 'form', array(
'method' => 'get',
'action' => $wgScript ) ) .
Xml::fieldset( $this->msg( 'undelete-search-box' )->text() ) .
Html::hidden( 'title',
$this->getTitle()->getPrefixedDBkey() ) .
Xml::inputLabel( $this->msg( 'undelete-search-prefix' )->text(),
'prefix', 'prefix', 20,
$this->mSearchPrefix ) . ' ' .
Xml::submitButton( $this->msg( 'undelete-search-submit' )->text() ) .
Xml::closeElement( 'fieldset' ) .
Xml::closeElement( 'form' )
);
# List undeletable articles
if( $this->mSearchPrefix ) {
$result = PageArchive::listPagesByPrefix( $this->mSearchPrefix );
$this->showList( $result );
}
}
/**
* Generic list of deleted pages
*
* @param $result ResultWrapper
* @return bool
*/
private function showList( $result ) {
$out = $this->getOutput();
if( $result->numRows() == 0 ) {
$out->addWikiMsg( 'undelete-no-results' );
return false;
}
$out->addWikiMsg( 'undeletepagetext', $this->getLanguage()->formatNum( $result->numRows() ) );
$undelete = $this->getTitle();
$out->addHTML( "<ul>\n" );
foreach ( $result as $row ) {
$title = Title::makeTitleSafe( $row->ar_namespace, $row->ar_title );
if ( $title !== null ) {
$item = Linker::linkKnown(
$undelete,
htmlspecialchars( $title->getPrefixedText() ),
array(),
array( 'target' => $title->getPrefixedText() )
);
} else {
// The title is no longer valid, show as text
$item = Html::element( 'span', array( 'class' => 'mw-invalidtitle' ),
Linker::getInvalidTitleDescription( $this->getContext(), $row->ar_namespace, $row->ar_title ) );
}
$revs = $this->msg( 'undeleterevisions' )->numParams( $row->count )->parse();
$out->addHTML( "<li>{$item} ({$revs})</li>\n" );
}
$result->free();
$out->addHTML( "</ul>\n" );
return true;
}
private function showRevision( $timestamp ) {
if( !preg_match( '/[0-9]{14}/', $timestamp ) ) {
return;
}
$archive = new PageArchive( $this->mTargetObj );
if ( !wfRunHooks( 'UndeleteForm::showRevision', array( &$archive, $this->mTargetObj ) ) ) {
return;
}
$rev = $archive->getRevision( $timestamp );
$out = $this->getOutput();
$user = $this->getUser();
if( !$rev ) {
$out->addWikiMsg( 'undeleterevision-missing' );
return;
}
if( $rev->isDeleted( Revision::DELETED_TEXT ) ) {
if( !$rev->userCan( Revision::DELETED_TEXT, $user ) ) {
$out->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", 'rev-deleted-text-permission' );
return;
} else {
$out->wrapWikiMsg( "<div class='mw-warning plainlinks'>\n$1\n</div>\n", 'rev-deleted-text-view' );
$out->addHTML( '<br />' );
// and we are allowed to see...
}
}
if( $this->mDiff ) {
$previousRev = $archive->getPreviousRevision( $timestamp );
if( $previousRev ) {
$this->showDiff( $previousRev, $rev );
if( $this->mDiffOnly ) {
return;
} else {
$out->addHTML( '<hr />' );
}
} else {
$out->addWikiMsg( 'undelete-nodiff' );
}
}
$link = Linker::linkKnown(
$this->getTitle( $this->mTargetObj->getPrefixedDBkey() ),
htmlspecialchars( $this->mTargetObj->getPrefixedText() )
);
$lang = $this->getLanguage();
// date and time are separate parameters to facilitate localisation.
// $time is kept for backward compat reasons.
$time = $lang->userTimeAndDate( $timestamp, $user );
$d = $lang->userDate( $timestamp, $user );
$t = $lang->userTime( $timestamp, $user );
$userLink = Linker::revUserTools( $rev );
$content = $rev->getContent( Revision::FOR_THIS_USER, $user );
$isText = ( $content instanceof TextContent );
if( $this->mPreview || $isText ) {
$openDiv = '<div id="mw-undelete-revision" class="mw-warning">';
} else {
$openDiv = '<div id="mw-undelete-revision">';
}
$out->addHTML( $openDiv );
// Revision delete links
if ( !$this->mDiff ) {
$revdel = Linker::getRevDeleteLink( $user, $rev, $this->mTargetObj );
if ( $revdel ) {
$out->addHTML( "$revdel " );
}
}
$out->addHTML( $this->msg( 'undelete-revision' )->rawParams( $link )->params(
$time )->rawParams( $userLink )->params( $d, $t )->parse() . '</div>' );
if ( !wfRunHooks( 'UndeleteShowRevision', array( $this->mTargetObj, $rev ) ) ) {
return;
}
if( $this->mPreview || !$isText ) {
// NOTE: non-text content has no source view, so always use rendered preview
// Hide [edit]s
$popts = $out->parserOptions();
$popts->setEditSection( false );
$pout = $content->getParserOutput( $this->mTargetObj, $rev->getId(), $popts, true );
$out->addParserOutput( $pout );
}
if ( $isText ) {
// source view for textual content
$sourceView = Xml::element( 'textarea', array(
'readonly' => 'readonly',
'cols' => $user->getIntOption( 'cols' ),
'rows' => $user->getIntOption( 'rows' ) ),
$content->getNativeData() . "\n" );
$previewButton = Xml::element( 'input', array(
'type' => 'submit',
'name' => 'preview',
'value' => $this->msg( 'showpreview' )->text() ) );
} else {
$sourceView = '';
$previewButton = '';
}
$diffButton = Xml::element( 'input', array(
'name' => 'diff',
'type' => 'submit',
'value' => $this->msg( 'showdiff' )->text() ) );
$out->addHTML(
$sourceView .
Xml::openElement( 'div', array(
'style' => 'clear: both' ) ) .
Xml::openElement( 'form', array(
'method' => 'post',
'action' => $this->getTitle()->getLocalURL( array( 'action' => 'submit' ) ) ) ) .
Xml::element( 'input', array(
'type' => 'hidden',
'name' => 'target',
'value' => $this->mTargetObj->getPrefixedDBkey() ) ) .
Xml::element( 'input', array(
'type' => 'hidden',
'name' => 'timestamp',
'value' => $timestamp ) ) .
Xml::element( 'input', array(
'type' => 'hidden',
'name' => 'wpEditToken',
'value' => $user->getEditToken() ) ) .
$previewButton .
$diffButton .
Xml::closeElement( 'form' ) .
Xml::closeElement( 'div' ) );
}
/**
* Build a diff display between this and the previous either deleted
* or non-deleted edit.
*
* @param $previousRev Revision
* @param $currentRev Revision
* @return String: HTML
*/
function showDiff( $previousRev, $currentRev ) {
$diffContext = clone $this->getContext();
$diffContext->setTitle( $currentRev->getTitle() );
$diffContext->setWikiPage( WikiPage::factory( $currentRev->getTitle() ) );
$diffEngine = $currentRev->getContentHandler()->createDifferenceEngine( $diffContext );
$diffEngine->showDiffStyle();
$this->getOutput()->addHTML(
"<div>" .
"<table style='width: 98%;' cellpadding='0' cellspacing='4' class='diff'>" .
"<col class='diff-marker' />" .
"<col class='diff-content' />" .
"<col class='diff-marker' />" .
"<col class='diff-content' />" .
"<tr>" .
"<td colspan='2' style='width: 50%; text-align: center' class='diff-otitle'>" .
$this->diffHeader( $previousRev, 'o' ) .
"</td>\n" .
"<td colspan='2' style='width: 50%; text-align: center' class='diff-ntitle'>" .
$this->diffHeader( $currentRev, 'n' ) .
"</td>\n" .
"</tr>" .
$diffEngine->generateContentDiffBody(
$previousRev->getContent( Revision::FOR_THIS_USER, $this->getUser() ),
$currentRev->getContent( Revision::FOR_THIS_USER, $this->getUser() ) ) .
"</table>" .
"</div>\n"
);
}
/**
* @param $rev Revision
* @param $prefix
* @return string
*/
private function diffHeader( $rev, $prefix ) {
$isDeleted = !( $rev->getId() && $rev->getTitle() );
if( $isDeleted ) {
/// @todo FIXME: $rev->getTitle() is null for deleted revs...?
$targetPage = $this->getTitle();
$targetQuery = array(
'target' => $this->mTargetObj->getPrefixedText(),
'timestamp' => wfTimestamp( TS_MW, $rev->getTimestamp() )
);
} else {
/// @todo FIXME: getId() may return non-zero for deleted revs...
$targetPage = $rev->getTitle();
$targetQuery = array( 'oldid' => $rev->getId() );
}
// Add show/hide deletion links if available
$user = $this->getUser();
$lang = $this->getLanguage();
$rdel = Linker::getRevDeleteLink( $user, $rev, $this->mTargetObj );
if ( $rdel ) $rdel = " $rdel";
return
'<div id="mw-diff-' . $prefix . 'title1"><strong>' .
Linker::link(
$targetPage,
$this->msg(
'revisionasof',
$lang->userTimeAndDate( $rev->getTimestamp(), $user ),
$lang->userDate( $rev->getTimestamp(), $user ),
$lang->userTime( $rev->getTimestamp(), $user )
)->escaped(),
array(),
$targetQuery
) .
'</strong></div>' .
'<div id="mw-diff-' . $prefix . 'title2">' .
Linker::revUserTools( $rev ) . '<br />' .
'</div>' .
'<div id="mw-diff-' . $prefix . 'title3">' .
Linker::revComment( $rev ) . $rdel . '<br />' .
'</div>';
}
/**
* Show a form confirming whether a tokenless user really wants to see a file
*/
private function showFileConfirmationForm( $key ) {
$out = $this->getOutput();
$lang = $this->getLanguage();
$user = $this->getUser();
$file = new ArchivedFile( $this->mTargetObj, '', $this->mFilename );
$out->addWikiMsg( 'undelete-show-file-confirm',
$this->mTargetObj->getText(),
$lang->userDate( $file->getTimestamp(), $user ),
$lang->userTime( $file->getTimestamp(), $user ) );
$out->addHTML(
Xml::openElement( 'form', array(
'method' => 'POST',
'action' => $this->getTitle()->getLocalURL(
'target=' . urlencode( $this->mTarget ) .
'&file=' . urlencode( $key ) .
'&token=' . urlencode( $user->getEditToken( $key ) ) )
)
) .
Xml::submitButton( $this->msg( 'undelete-show-file-submit' )->text() ) .
'</form>'
);
}
/**
* Show a deleted file version requested by the visitor.
*/
private function showFile( $key ) {
$this->getOutput()->disable();
# We mustn't allow the output to be Squid cached, otherwise
# if an admin previews a deleted image, and it's cached, then
# a user without appropriate permissions can toddle off and
# nab the image, and Squid will serve it
$response = $this->getRequest()->response();
$response->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
$response->header( 'Cache-Control: no-cache, no-store, max-age=0, must-revalidate' );
$response->header( 'Pragma: no-cache' );
$repo = RepoGroup::singleton()->getLocalRepo();
$path = $repo->getZonePath( 'deleted' ) . '/' . $repo->getDeletedHashPath( $key ) . $key;
$repo->streamFile( $path );
}
private function showHistory() {
$out = $this->getOutput();
if( $this->mAllowed ) {
$out->addModules( 'mediawiki.special.undelete' );
}
$out->wrapWikiMsg(
"<div class='mw-undelete-pagetitle'>\n$1\n</div>\n",
array( 'undeletepagetitle', wfEscapeWikiText( $this->mTargetObj->getPrefixedText() ) )
);
$archive = new PageArchive( $this->mTargetObj );
wfRunHooks( 'UndeleteForm::showHistory', array( &$archive, $this->mTargetObj ) );
/*
$text = $archive->getLastRevisionText();
if( is_null( $text ) ) {
$out->addWikiMsg( 'nohistory' );
return;
}
*/
$out->addHTML( '<div class="mw-undelete-history">' );
if ( $this->mAllowed ) {
$out->addWikiMsg( 'undeletehistory' );
$out->addWikiMsg( 'undeleterevdel' );
} else {
$out->addWikiMsg( 'undeletehistorynoadmin' );
}
$out->addHTML( '</div>' );
# List all stored revisions
$revisions = $archive->listRevisions();
$files = $archive->listFiles();
$haveRevisions = $revisions && $revisions->numRows() > 0;
$haveFiles = $files && $files->numRows() > 0;
# Batch existence check on user and talk pages
if( $haveRevisions ) {
$batch = new LinkBatch();
foreach ( $revisions as $row ) {
$batch->addObj( Title::makeTitleSafe( NS_USER, $row->ar_user_text ) );
$batch->addObj( Title::makeTitleSafe( NS_USER_TALK, $row->ar_user_text ) );
}
$batch->execute();
$revisions->seek( 0 );
}
if( $haveFiles ) {
$batch = new LinkBatch();
foreach ( $files as $row ) {
$batch->addObj( Title::makeTitleSafe( NS_USER, $row->fa_user_text ) );
$batch->addObj( Title::makeTitleSafe( NS_USER_TALK, $row->fa_user_text ) );
}
$batch->execute();
$files->seek( 0 );
}
if ( $this->mAllowed ) {
$action = $this->getTitle()->getLocalURL( array( 'action' => 'submit' ) );
# Start the form here
$top = Xml::openElement( 'form', array( 'method' => 'post', 'action' => $action, 'id' => 'undelete' ) );
$out->addHTML( $top );
}
# Show relevant lines from the deletion log:
$deleteLogPage = new LogPage( 'delete' );
$out->addHTML( Xml::element( 'h2', null, $deleteLogPage->getName()->text() ) . "\n" );
LogEventsList::showLogExtract( $out, 'delete', $this->mTargetObj );
# Show relevant lines from the suppression log:
$suppressLogPage = new LogPage( 'suppress' );
if( $this->getUser()->isAllowed( 'suppressionlog' ) ) {
$out->addHTML( Xml::element( 'h2', null, $suppressLogPage->getName()->text() ) . "\n" );
LogEventsList::showLogExtract( $out, 'suppress', $this->mTargetObj );
}
if( $this->mAllowed && ( $haveRevisions || $haveFiles ) ) {
# Format the user-visible controls (comment field, submission button)
# in a nice little table
if( $this->getUser()->isAllowed( 'suppressrevision' ) ) {
$unsuppressBox =
"<tr>
<td> </td>
<td class='mw-input'>" .
Xml::checkLabel( $this->msg( 'revdelete-unsuppress' )->text(),
'wpUnsuppress', 'mw-undelete-unsuppress', $this->mUnsuppress ).
"</td>
</tr>";
} else {
$unsuppressBox = '';
}
$table =
Xml::fieldset( $this->msg( 'undelete-fieldset-title' )->text() ) .
Xml::openElement( 'table', array( 'id' => 'mw-undelete-table' ) ) .
"<tr>
<td colspan='2' class='mw-undelete-extrahelp'>" .
$this->msg( 'undeleteextrahelp' )->parseAsBlock() .
"</td>
</tr>
<tr>
<td class='mw-label'>" .
Xml::label( $this->msg( 'undeletecomment' )->text(), 'wpComment' ) .
"</td>
<td class='mw-input'>" .
Xml::input( 'wpComment', 50, $this->mComment, array( 'id' => 'wpComment' ) ) .
"</td>
</tr>
<tr>
<td> </td>
<td class='mw-submit'>" .
Xml::submitButton( $this->msg( 'undeletebtn' )->text(), array( 'name' => 'restore', 'id' => 'mw-undelete-submit' ) ) . ' ' .
Xml::submitButton( $this->msg( 'undeleteinvert' )->text(), array( 'name' => 'invert', 'id' => 'mw-undelete-invert' ) ) .
"</td>
</tr>" .
$unsuppressBox .
Xml::closeElement( 'table' ) .
Xml::closeElement( 'fieldset' );
$out->addHTML( $table );
}
$out->addHTML( Xml::element( 'h2', null, $this->msg( 'history' )->text() ) . "\n" );
if( $haveRevisions ) {
# The page's stored (deleted) history:
$out->addHTML( '<ul>' );
$remaining = $revisions->numRows();
$earliestLiveTime = $this->mTargetObj->getEarliestRevTime();
foreach ( $revisions as $row ) {
$remaining--;
$out->addHTML( $this->formatRevisionRow( $row, $earliestLiveTime, $remaining ) );
}
$revisions->free();
$out->addHTML( '</ul>' );
} else {
$out->addWikiMsg( 'nohistory' );
}
if( $haveFiles ) {
$out->addHTML( Xml::element( 'h2', null, $this->msg( 'filehist' )->text() ) . "\n" );
$out->addHTML( '<ul>' );
foreach ( $files as $row ) {
$out->addHTML( $this->formatFileRow( $row ) );
}
$files->free();
$out->addHTML( '</ul>' );
}
if ( $this->mAllowed ) {
# Slip in the hidden controls here
$misc = Html::hidden( 'target', $this->mTarget );
$misc .= Html::hidden( 'wpEditToken', $this->getUser()->getEditToken() );
$misc .= Xml::closeElement( 'form' );
$out->addHTML( $misc );
}
return true;
}
private function formatRevisionRow( $row, $earliestLiveTime, $remaining ) {
$rev = Revision::newFromArchiveRow( $row,
array(
'title' => $this->mTargetObj
) );
$revTextSize = '';
$ts = wfTimestamp( TS_MW, $row->ar_timestamp );
// Build checkboxen...
if( $this->mAllowed ) {
if( $this->mInvert ) {
if( in_array( $ts, $this->mTargetTimestamp ) ) {
$checkBox = Xml::check( "ts$ts" );
} else {
$checkBox = Xml::check( "ts$ts", true );
}
} else {
$checkBox = Xml::check( "ts$ts" );
}
} else {
$checkBox = '';
}
$user = $this->getUser();
// Build page & diff links...
if( $this->mCanView ) {
$titleObj = $this->getTitle();
# Last link
if( !$rev->userCan( Revision::DELETED_TEXT, $this->getUser() ) ) {
$pageLink = htmlspecialchars( $this->getLanguage()->userTimeAndDate( $ts, $user ) );
$last = $this->msg( 'diff' )->escaped();
} elseif( $remaining > 0 || ( $earliestLiveTime && $ts > $earliestLiveTime ) ) {
$pageLink = $this->getPageLink( $rev, $titleObj, $ts );
$last = Linker::linkKnown(
$titleObj,
$this->msg( 'diff' )->escaped(),
array(),
array(
'target' => $this->mTargetObj->getPrefixedText(),
'timestamp' => $ts,
'diff' => 'prev'
)
);
} else {
$pageLink = $this->getPageLink( $rev, $titleObj, $ts );
$last = $this->msg( 'diff' )->escaped();
}
} else {
$pageLink = htmlspecialchars( $this->getLanguage()->userTimeAndDate( $ts, $user ) );
$last = $this->msg( 'diff' )->escaped();
}
// User links
$userLink = Linker::revUserTools( $rev );
// Revision text size
$size = $row->ar_len;
if( !is_null( $size ) ) {
$revTextSize = Linker::formatRevisionSize( $size );
}
// Edit summary
$comment = Linker::revComment( $rev );
// Revision delete links
$revdlink = Linker::getRevDeleteLink( $user, $rev, $this->mTargetObj );
$revisionRow = $this->msg( 'undelete-revisionrow' )->rawParams( $checkBox, $revdlink, $last, $pageLink, $userLink, $revTextSize, $comment )->escaped();
return "<li>$revisionRow</li>";
}
private function formatFileRow( $row ) {
$file = ArchivedFile::newFromRow( $row );
$ts = wfTimestamp( TS_MW, $row->fa_timestamp );
$user = $this->getUser();
if( $this->mAllowed && $row->fa_storage_key ) {
$checkBox = Xml::check( 'fileid' . $row->fa_id );
$key = urlencode( $row->fa_storage_key );
$pageLink = $this->getFileLink( $file, $this->getTitle(), $ts, $key );
} else {
$checkBox = '';
$pageLink = $this->getLanguage()->userTimeAndDate( $ts, $user );
}
$userLink = $this->getFileUser( $file );
$data = $this->msg( 'widthheight' )->numParams( $row->fa_width, $row->fa_height )->text();
$bytes = $this->msg( 'parentheses' )->rawParams( $this->msg( 'nbytes' )->numParams( $row->fa_size )->text() )->plain();
$data = htmlspecialchars( $data . ' ' . $bytes );
$comment = $this->getFileComment( $file );
// Add show/hide deletion links if available
$canHide = $user->isAllowed( 'deleterevision' );
if( $canHide || ( $file->getVisibility() && $user->isAllowed( 'deletedhistory' ) ) ) {
if( !$file->userCan( File::DELETED_RESTRICTED, $user ) ) {
$revdlink = Linker::revDeleteLinkDisabled( $canHide ); // revision was hidden from sysops
} else {
$query = array(
'type' => 'filearchive',
'target' => $this->mTargetObj->getPrefixedDBkey(),
'ids' => $row->fa_id
);
$revdlink = Linker::revDeleteLink( $query,
$file->isDeleted( File::DELETED_RESTRICTED ), $canHide );
}
} else {
$revdlink = '';
}
return "<li>$checkBox $revdlink $pageLink . . $userLink $data $comment</li>\n";
}
/**
* Fetch revision text link if it's available to all users
*
* @param $rev Revision
* @param $titleObj Title
* @param string $ts Timestamp
* @return string
*/
function getPageLink( $rev, $titleObj, $ts ) {
$user = $this->getUser();
$time = $this->getLanguage()->userTimeAndDate( $ts, $user );
if( !$rev->userCan( Revision::DELETED_TEXT, $user ) ) {
return '<span class="history-deleted">' . $time . '</span>';
} else {
$link = Linker::linkKnown(
$titleObj,
htmlspecialchars( $time ),
array(),
array(
'target' => $this->mTargetObj->getPrefixedText(),
'timestamp' => $ts
)
);
if( $rev->isDeleted( Revision::DELETED_TEXT ) ) {
$link = '<span class="history-deleted">' . $link . '</span>';
}
return $link;
}
}
/**
* Fetch image view link if it's available to all users
*
* @param $file File
* @param $titleObj Title
* @param string $ts A timestamp
* @param string $key a storage key
*
* @return String: HTML fragment
*/
function getFileLink( $file, $titleObj, $ts, $key ) {
$user = $this->getUser();
$time = $this->getLanguage()->userTimeAndDate( $ts, $user );
if( !$file->userCan( File::DELETED_FILE, $user ) ) {
return '<span class="history-deleted">' . $time . '</span>';
} else {
$link = Linker::linkKnown(
$titleObj,
htmlspecialchars( $time ),
array(),
array(
'target' => $this->mTargetObj->getPrefixedText(),
'file' => $key,
'token' => $user->getEditToken( $key )
)
);
if( $file->isDeleted( File::DELETED_FILE ) ) {
$link = '<span class="history-deleted">' . $link . '</span>';
}
return $link;
}
}
/**
* Fetch file's user id if it's available to this user
*
* @param $file File
* @return String: HTML fragment
*/
function getFileUser( $file ) {
if( !$file->userCan( File::DELETED_USER, $this->getUser() ) ) {
return '<span class="history-deleted">' . $this->msg( 'rev-deleted-user' )->escaped() . '</span>';
} else {
$link = Linker::userLink( $file->getRawUser(), $file->getRawUserText() ) .
Linker::userToolLinks( $file->getRawUser(), $file->getRawUserText() );
if( $file->isDeleted( File::DELETED_USER ) ) {
$link = '<span class="history-deleted">' . $link . '</span>';
}
return $link;
}
}
/**
* Fetch file upload comment if it's available to this user
*
* @param $file File
* @return String: HTML fragment
*/
function getFileComment( $file ) {
if( !$file->userCan( File::DELETED_COMMENT, $this->getUser() ) ) {
return '<span class="history-deleted"><span class="comment">' .
$this->msg( 'rev-deleted-comment' )->escaped() . '</span></span>';
} else {
$link = Linker::commentBlock( $file->getRawDescription() );
if( $file->isDeleted( File::DELETED_COMMENT ) ) {
$link = '<span class="history-deleted">' . $link . '</span>';
}
return $link;
}
}
function undelete() {
global $wgUploadMaintenance;
if ( $wgUploadMaintenance && $this->mTargetObj->getNamespace() == NS_FILE ) {
throw new ErrorPageError( 'undelete-error', 'filedelete-maintenance' );
}
if ( wfReadOnly() ) {
throw new ReadOnlyError;
}
$out = $this->getOutput();
$archive = new PageArchive( $this->mTargetObj );
wfRunHooks( 'UndeleteForm::undelete', array( &$archive, $this->mTargetObj ) );
$ok = $archive->undelete(
$this->mTargetTimestamp,
$this->mComment,
$this->mFileVersions,
$this->mUnsuppress,
$this->getUser()
);
if( is_array( $ok ) ) {
if ( $ok[1] ) { // Undeleted file count
wfRunHooks( 'FileUndeleteComplete', array(
$this->mTargetObj, $this->mFileVersions,
$this->getUser(), $this->mComment ) );
}
$link = Linker::linkKnown( $this->mTargetObj );
$out->addHTML( $this->msg( 'undeletedpage' )->rawParams( $link )->parse() );
} else {
$out->setPageTitle( $this->msg( 'undelete-error' ) );
}
// Show revision undeletion warnings and errors
$status = $archive->getRevisionStatus();
if( $status && !$status->isGood() ) {
$out->addWikiText( '<div class="error">' . $status->getWikiText( 'cannotundelete', 'cannotundelete' ) . '</div>' );
}
// Show file undeletion warnings and errors
$status = $archive->getFileStatus();
if( $status && !$status->isGood() ) {
$out->addWikiText( '<div class="error">' . $status->getWikiText( 'undelete-error-short', 'undelete-error-long' ) . '</div>' );
}
}
protected function getGroupName() {
return 'pagetools';
}
}