execute();
}
/**
* Used to show archived pages and eventually restore them.
* @ingroup SpecialPage
*/
class PageArchive {
protected $title;
var $fileStatus;
function __construct( $title ) {
if( is_null( $title ) ) {
throw new MWException( 'Archiver() 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.
*
* @return ResultWrapper
*/
public static function listPagesByPrefix( $prefix ) {
$dbr = wfGetDB( DB_SLAVE );
$title = Title::newFromText( $prefix );
if( $title ) {
$ns = $title->getNamespace();
$encPrefix = $dbr->escapeLike( $title->getDBkey() );
} else {
// Prolly won't work too good
// @todo handle bare namespace names cleanly?
$ns = 0;
$encPrefix = $dbr->escapeLike( $prefix );
}
$conds = array(
'ar_namespace' => $ns,
"ar_title LIKE '$encPrefix%'",
);
return self::listPages( $dbr, $conds );
}
protected static function listPages( $dbr, $condition ) {
return $dbr->resultObject(
$dbr->select(
array( 'archive' ),
array(
'ar_namespace',
'ar_title',
'COUNT(*) AS count'
),
$condition,
__METHOD__,
array(
'GROUP BY' => 'ar_namespace,ar_title',
'ORDER BY' => '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() {
$dbr = wfGetDB( DB_SLAVE );
$res = $dbr->select( 'archive',
array( 'ar_minor_edit', 'ar_timestamp', 'ar_user', 'ar_user_text', 'ar_comment', 'ar_len', 'ar_deleted' ),
array( 'ar_namespace' => $this->title->getNamespace(),
'ar_title' => $this->title->getDBkey() ),
'PageArchive::listRevisions',
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_IMAGE ) {
$dbr = wfGetDB( DB_SLAVE );
$res = $dbr->select( 'filearchive',
array(
'fa_id',
'fa_name',
'fa_archive_name',
'fa_storage_key',
'fa_storage_group',
'fa_size',
'fa_width',
'fa_height',
'fa_bits',
'fa_metadata',
'fa_media_type',
'fa_major_mime',
'fa_minor_mime',
'fa_description',
'fa_user',
'fa_user_text',
'fa_timestamp',
'fa_deleted' ),
array( 'fa_name' => $this->title->getDBkey() ),
__METHOD__,
array( 'ORDER BY' => 'fa_timestamp DESC' ) );
$ret = $dbr->resultObject( $res );
return $ret;
}
return null;
}
/**
* Fetch (and decompress if necessary) the stored text for the deleted
* revision of the page with the given timestamp.
*
* @return string
* @deprecated Use getRevision() for more flexible information
*/
function getRevisionText( $timestamp ) {
$rev = $this->getRevision( $timestamp );
return $rev ? $rev->getText() : 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 string $timestamp
* @return Revision
*/
function getRevision( $timestamp ) {
$dbr = wfGetDB( DB_SLAVE );
$row = $dbr->selectRow( 'archive',
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' ),
array( 'ar_namespace' => $this->title->getNamespace(),
'ar_title' => $this->title->getDBkey(),
'ar_timestamp' => $dbr->timestamp( $timestamp ) ),
__METHOD__ );
if( $row ) {
return new Revision( array(
'page' => $this->title->getArticleId(),
'id' => $row->ar_rev_id,
'text' => ($row->ar_text_id
? null
: Revision::getRevisionText( $row, 'ar_' ) ),
'comment' => $row->ar_comment,
'user' => $row->ar_user,
'user_text' => $row->ar_user_text,
'timestamp' => $row->ar_timestamp,
'minor_edit' => $row->ar_minor_edit,
'text_id' => $row->ar_text_id,
'deleted' => $row->ar_deleted,
'len' => $row->ar_len) );
} 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 string $timestamp
* @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
*/
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() ),
'PageArchive::getLastRevisionText',
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 bool
*/
function isDeleted() {
$dbr = wfGetDB( DB_SLAVE );
$n = $dbr->selectField( 'archive', 'COUNT(ar_title)',
array( 'ar_namespace' => $this->title->getNamespace(),
'ar_title' => $this->title->getDBkey() ) );
return ($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 string $comment
* @param array $fileVersions
* @param bool $unsuppress
*
* @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 ) {
// 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_IMAGE ) {
$img = wfLocalFile( $this->title );
$this->fileStatus = $img->restore( $fileVersions, $unsuppress );
$filesRestored = $this->fileStatus->successCount;
} else {
$filesRestored = 0;
}
if( $restoreText ) {
$textRestored = $this->undeleteRevisions( $timestamps, $unsuppress );
if($textRestored === false) // It must be one of UNDELETE_*
return false;
} else {
$textRestored = 0;
}
// Touch the log!
global $wgContLang;
$log = new LogPage( 'delete' );
if( $textRestored && $filesRestored ) {
$reason = wfMsgExt( 'undeletedrevisions-files', array( 'content', 'parsemag' ),
$wgContLang->formatNum( $textRestored ),
$wgContLang->formatNum( $filesRestored ) );
} elseif( $textRestored ) {
$reason = wfMsgExt( 'undeletedrevisions', array( 'content', 'parsemag' ),
$wgContLang->formatNum( $textRestored ) );
} elseif( $filesRestored ) {
$reason = wfMsgExt( 'undeletedfiles', array( 'content', 'parsemag' ),
$wgContLang->formatNum( $filesRestored ) );
} else {
wfDebug( "Undelete: nothing undeleted...\n" );
return false;
}
if( trim( $comment ) != '' )
$reason .= ": {$comment}";
$log->addEntry( 'restore', $this->title, $reason );
return array($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 string $comment
* @param array $fileVersions
* @param bool $unsuppress, remove all ar_deleted/fa_deleted restrictions of seletected revs
*
* @return mixed number of revisions restored or false on failure
*/
private function undeleteRevisions( $timestamps, $unsuppress = false ) {
if ( wfReadOnly() )
return false;
$restoreAll = empty( $timestamps );
$dbw = wfGetDB( DB_MASTER );
# Does this page already exist? We'll have to update it...
$article = new Article( $this->title );
$options = 'FOR UPDATE';
$page = $dbw->selectRow( 'page',
array( 'page_id', 'page_latest' ),
array( 'page_namespace' => $this->title->getNamespace(),
'page_title' => $this->title->getDBkey() ),
__METHOD__,
$options );
if( $page ) {
$makepage = false;
# Page already exists. Import the history, and if necessary
# we'll update the latest revision field in the record.
$newid = 0;
$pageId = $page->page_id;
$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" );
return 0;
}
} 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} )";
}
/**
* Select each archived revision...
*/
$result = $dbw->select( 'archive',
/* 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' ),
/* 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 ) {
# We need to seek around as just using DESC in the ORDER BY
# would leave the revisions inserted in the wrong order
$first = $ret->fetchObject();
$ret->seek( $rev_count - 1 );
$last = $ret->fetchObject();
// We don't handle well changing the top revision's settings
if( !$unsuppress && $last->ar_deleted && $last->ar_timestamp > $previousTimestamp ) {
wfDebug( __METHOD__.": restoration would result in a deleted top revision\n" );
return false;
}
$ret->seek( 0 );
}
if( $makepage ) {
$newid = $article->insertOn( $dbw );
$pageId = $newid;
}
$revision = null;
$restored = 0;
while( $row = $ret->fetchObject() ) {
if( $row->ar_text_id ) {
// Revision was deleted in 1.5+; text is in
// the regular text table, use the reference.
// Specify null here so the so the text is
// dereferenced for page length info if needed.
$revText = null;
} else {
// Revision was deleted in 1.4 or earlier.
// Text is squashed into the archive row, and
// a new text table entry will be created for it.
$revText = Revision::getRevisionText( $row, 'ar_' );
}
$revision = new Revision( array(
'page' => $pageId,
'id' => $row->ar_rev_id,
'text' => $revText,
'comment' => $row->ar_comment,
'user' => $row->ar_user,
'user_text' => $row->ar_user_text,
'timestamp' => $row->ar_timestamp,
'minor_edit' => $row->ar_minor_edit,
'text_id' => $row->ar_text_id,
'deleted' => $unsuppress ? 0 : $row->ar_deleted,
'len' => $row->ar_len
) );
$revision->insertOn( $dbw );
$restored++;
wfRunHooks( 'ArticleRevisionUndeleted', array( &$this->title, $revision, $row->ar_page_id ) );
}
// Was anything restored at all?
if($restored == 0)
return 0;
if( $revision ) {
// Attach the latest revision to the page...
$wasnew = $article->updateIfNewerOn( $dbw, $revision, $previousRevId );
if( $newid || $wasnew ) {
// Update site stats, link tables, etc
$article->createUpdates( $revision );
}
if( $newid ) {
wfRunHooks( 'ArticleUndelete', array( &$this->title, true ) );
Article::onArticleCreate( $this->title );
} else {
wfRunHooks( 'ArticleUndelete', array( &$this->title, false ) );
Article::onArticleEdit( $this->title );
}
if( $this->title->getNamespace() == NS_IMAGE ) {
$update = new HTMLCacheUpdate( $this->title, 'imagelinks' );
$update->doUpdate();
}
} else {
// Revision couldn't be created. This is very weird
return self::UNDELETE_UNKNOWNERR;
}
# 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__ );
return $restored;
}
function getFileStatus() { return $this->fileStatus; }
}
/**
* The HTML form for Special:Undelete, which allows users with the appropriate
* permissions to view and restore deleted content.
* @ingroup SpecialPage
*/
class UndeleteForm {
var $mAction, $mTarget, $mTimestamp, $mRestore, $mTargetObj;
var $mTargetTimestamp, $mAllowed, $mComment;
function UndeleteForm( $request, $par = "" ) {
global $wgUser;
$this->mAction = $request->getVal( 'action' );
$this->mTarget = $request->getVal( 'target' );
$this->mSearchPrefix = $request->getText( 'prefix' );
$time = $request->getVal( 'timestamp' );
$this->mTimestamp = $time ? wfTimestamp( TS_MW, $time ) : '';
$this->mFile = $request->getVal( 'file' );
$posted = $request->wasPosted() &&
$wgUser->matchEditToken( $request->getVal( 'wpEditToken' ) );
$this->mRestore = $request->getCheck( 'restore' ) && $posted;
$this->mPreview = $request->getCheck( 'preview' ) && $posted;
$this->mDiff = $request->getCheck( 'diff' );
$this->mComment = $request->getText( 'wpComment' );
$this->mUnsuppress = $request->getVal( 'wpUnsuppress' ) && $wgUser->isAllowed( 'suppressrevision' );
if( $par != "" ) {
$this->mTarget = $par;
}
if ( $wgUser->isAllowed( 'undelete' ) && !$wgUser->isBlocked() ) {
$this->mAllowed = true;
} else {
$this->mAllowed = false;
$this->mTimestamp = '';
$this->mRestore = false;
}
if ( $this->mTarget !== "" ) {
$this->mTargetObj = Title::newFromURL( $this->mTarget );
} else {
$this->mTargetObj = NULL;
}
if( $this->mRestore ) {
$timestamps = array();
$this->mFileVersions = array();
foreach( $_REQUEST 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() {
global $wgOut, $wgUser;
if ( $this->mAllowed ) {
$wgOut->setPagetitle( wfMsg( "undeletepage" ) );
} else {
$wgOut->setPagetitle( wfMsg( "viewdeletedpage" ) );
}
if( is_null( $this->mTargetObj ) ) {
# Not all users can just browse every deleted page from the list
if( $wgUser->isAllowed( 'browsearchive' ) ) {
$this->showSearchForm();
# List undeletable articles
if( $this->mSearchPrefix ) {
$result = PageArchive::listPagesByPrefix( $this->mSearchPrefix );
$this->showList( $result );
}
} else {
$wgOut->addWikiText( wfMsgHtml( 'undelete-header' ) );
}
return;
}
if( $this->mTimestamp !== '' ) {
return $this->showRevision( $this->mTimestamp );
}
if( $this->mFile !== null ) {
$file = new ArchivedFile( $this->mTargetObj, '', $this->mFile );
// Check if user is allowed to see this file
if( !$file->userCan( File::DELETED_FILE ) ) {
$wgOut->permissionRequired( 'suppressrevision' );
return false;
} else {
return $this->showFile( $this->mFile );
}
}
if( $this->mRestore && $this->mAction == "submit" ) {
return $this->undelete();
}
return $this->showHistory();
}
function showSearchForm() {
global $wgOut, $wgScript;
$wgOut->addWikiMsg( 'undelete-header' );
$wgOut->addHtml(
Xml::openElement( 'form', array(
'method' => 'get',
'action' => $wgScript ) ) .
'' .
'' );
}
// Generic list of deleted pages
private function showList( $result ) {
global $wgLang, $wgContLang, $wgUser, $wgOut;
if( $result->numRows() == 0 ) {
$wgOut->addWikiMsg( 'undelete-no-results' );
return;
}
$wgOut->addWikiMsg( "undeletepagetext" );
$sk = $wgUser->getSkin();
$undelete = SpecialPage::getTitleFor( 'Undelete' );
$wgOut->addHTML( "\n" );
while( $row = $result->fetchObject() ) {
$title = Title::makeTitleSafe( $row->ar_namespace, $row->ar_title );
$link = $sk->makeKnownLinkObj( $undelete, htmlspecialchars( $title->getPrefixedText() ),
'target=' . $title->getPrefixedUrl() );
#$revs = wfMsgHtml( 'undeleterevisions', $wgLang->formatNum( $row->count ) );
$revs = wfMsgExt( 'undeleterevisions',
array( 'parseinline' ),
$wgLang->formatNum( $row->count ) );
$wgOut->addHtml( "- {$link} ({$revs})
\n" );
}
$result->free();
$wgOut->addHTML( "
\n" );
return true;
}
private function showRevision( $timestamp ) {
global $wgLang, $wgUser, $wgOut;
$self = SpecialPage::getTitleFor( 'Undelete' );
$skin = $wgUser->getSkin();
if(!preg_match("/[0-9]{14}/",$timestamp)) return 0;
$archive = new PageArchive( $this->mTargetObj );
$rev = $archive->getRevision( $timestamp );
if( !$rev ) {
$wgOut->addWikiMsg( 'undeleterevision-missing' );
return;
}
if( $rev->isDeleted(Revision::DELETED_TEXT) ) {
if( !$rev->userCan(Revision::DELETED_TEXT) ) {
$wgOut->addWikiText( wfMsg( 'rev-deleted-text-permission' ) );
return;
} else {
$wgOut->addWikiText( wfMsg( 'rev-deleted-text-view' ) );
$wgOut->addHTML( '
' );
// and we are allowed to see...
}
}
$wgOut->setPageTitle( wfMsg( 'undeletepage' ) );
$link = $skin->makeKnownLinkObj(
SpecialPage::getTitleFor( 'Undelete', $this->mTargetObj->getPrefixedDBkey() ),
htmlspecialchars( $this->mTargetObj->getPrefixedText() )
);
$time = htmlspecialchars( $wgLang->timeAndDate( $timestamp, true ) );
$user = $skin->revUserTools( $rev );
if( $this->mDiff ) {
$previousRev = $archive->getPreviousRevision( $timestamp );
if( $previousRev ) {
$this->showDiff( $previousRev, $rev );
if( $wgUser->getOption( 'diffonly' ) ) {
return;
} else {
$wgOut->addHtml( '
' );
}
} else {
$wgOut->addHtml( wfMsgHtml( 'undelete-nodiff' ) );
}
}
$wgOut->addHtml( '' . wfMsgHtml( 'undelete-revision', $link, $time, $user ) . '
' );
wfRunHooks( 'UndeleteShowRevision', array( $this->mTargetObj, $rev ) );
if( $this->mPreview ) {
$wgOut->addHtml( "
\n" );
//Hide [edit]s
$popts = $wgOut->parserOptions();
$popts->setEditSection( false );
$wgOut->parserOptions( $popts );
$wgOut->addWikiTextTitleTidy( $rev->revText(), $this->mTargetObj, true );
}
$wgOut->addHtml(
wfElement( 'textarea', array(
'readonly' => 'readonly',
'cols' => intval( $wgUser->getOption( 'cols' ) ),
'rows' => intval( $wgUser->getOption( 'rows' ) ) ),
$rev->revText() . "\n" ) .
wfOpenElement( 'div' ) .
wfOpenElement( 'form', array(
'method' => 'post',
'action' => $self->getLocalURL( "action=submit" ) ) ) .
wfElement( 'input', array(
'type' => 'hidden',
'name' => 'target',
'value' => $this->mTargetObj->getPrefixedDbKey() ) ) .
wfElement( 'input', array(
'type' => 'hidden',
'name' => 'timestamp',
'value' => $timestamp ) ) .
wfElement( 'input', array(
'type' => 'hidden',
'name' => 'wpEditToken',
'value' => $wgUser->editToken() ) ) .
wfElement( 'input', array(
'type' => 'submit',
'name' => 'preview',
'value' => wfMsg( 'showpreview' ) ) ) .
wfElement( 'input', array(
'name' => 'diff',
'type' => 'submit',
'value' => wfMsg( 'showdiff' ) ) ) .
wfCloseElement( 'form' ) .
wfCloseElement( 'div' ) );
}
/**
* Build a diff display between this and the previous either deleted
* or non-deleted edit.
* @param Revision $previousRev
* @param Revision $currentRev
* @return string HTML
*/
function showDiff( $previousRev, $currentRev ) {
global $wgOut, $wgUser;
$diffEngine = new DifferenceEngine();
$diffEngine->showDiffStyle();
$wgOut->addHtml(
"" .
"
" .
"" .
"" .
"" .
"" .
"" .
"| " .
$this->diffHeader( $previousRev ) .
" | " .
"" .
$this->diffHeader( $currentRev ) .
" | " .
"
" .
$diffEngine->generateDiffBody(
$previousRev->getText(), $currentRev->getText() ) .
"
" .
"
' .
$sk->makeLinkObj( $targetPage,
wfMsgHtml( 'revisionasof',
$wgLang->timeanddate( $rev->getTimestamp(), true ) ),
$targetQuery ) .
( $isDeleted ? ' ' . wfMsgHtml( 'deletedrev' ) : '' ) .
'
' .
'' .
$sk->revUserTools( $rev ) . '
' .
'
' .
'' .
$sk->revComment( $rev ) . '
' .
'
';
}
/**
* Show a deleted file version requested by the visitor.
*/
private function showFile( $key ) {
global $wgOut, $wgRequest;
$wgOut->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
$wgRequest->response()->header( 'Expires: ' . gmdate( 'D, d M Y H:i:s', 0 ) . ' GMT' );
$wgRequest->response()->header( 'Cache-Control: no-cache, no-store, max-age=0, must-revalidate' );
$wgRequest->response()->header( 'Pragma: no-cache' );
$store = FileStore::get( 'deleted' );
$store->stream( $key );
}
private function showHistory() {
global $wgLang, $wgUser, $wgOut;
$sk = $wgUser->getSkin();
if( $this->mAllowed ) {
$wgOut->setPagetitle( wfMsg( "undeletepage" ) );
} else {
$wgOut->setPagetitle( wfMsg( 'viewdeletedpage' ) );
}
$wgOut->addWikiText( wfMsgHtml( 'undeletepagetitle', $this->mTargetObj->getPrefixedText()) );
$archive = new PageArchive( $this->mTargetObj );
/*
$text = $archive->getLastRevisionText();
if( is_null( $text ) ) {
$wgOut->addWikiMsg( "nohistory" );
return;
}
*/
if ( $this->mAllowed ) {
$wgOut->addWikiMsg( "undeletehistory" );
$wgOut->addWikiMsg( "undeleterevdel" );
} else {
$wgOut->addWikiMsg( "undeletehistorynoadmin" );
}
# 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();
while( $row = $revisions->fetchObject() ) {
$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();
while( $row = $files->fetchObject() ) {
$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 ) {
$titleObj = SpecialPage::getTitleFor( "Undelete" );
$action = $titleObj->getLocalURL( "action=submit" );
# Start the form here
$top = Xml::openElement( 'form', array( 'method' => 'post', 'action' => $action, 'id' => 'undelete' ) );
$wgOut->addHtml( $top );
}
# Show relevant lines from the deletion log:
$wgOut->addHTML( Xml::element( 'h2', null, LogPage::logName( 'delete' ) ) . "\n" );
LogEventsList::showLogExtract( $wgOut, 'delete', $this->mTargetObj->getPrefixedText() );
if( $this->mAllowed && ( $haveRevisions || $haveFiles ) ) {
# Format the user-visible controls (comment field, submission button)
# in a nice little table
if( $wgUser->isAllowed( 'suppressrevision' ) ) {
$unsuppressBox =
"
| |
" .
Xml::checkLabel( wfMsg('revdelete-unsuppress'), 'wpUnsuppress',
'mw-undelete-unsuppress', $this->mUnsuppress ).
" |
";
} else {
$unsuppressBox = "";
}
$table =
Xml::openElement( 'fieldset' ) .
Xml::element( 'legend', null, wfMsg( 'undelete-fieldset-title' ) ).
Xml::openElement( 'table', array( 'id' => 'mw-undelete-table' ) ) .
"
| " .
wfMsgWikiHtml( 'undeleteextrahelp' ) .
" |
| " .
Xml::label( wfMsg( 'undeletecomment' ), 'wpComment' ) .
" |
" .
Xml::input( 'wpComment', 50, $this->mComment, array( 'id' => 'wpComment' ) ) .
" |
| |
" .
Xml::submitButton( wfMsg( 'undeletebtn' ), array( 'name' => 'restore', 'id' => 'mw-undelete-submit' ) ) .
Xml::element( 'input', array( 'type' => 'reset', 'value' => wfMsg( 'undeletereset' ), 'id' => 'mw-undelete-reset' ) ) .
" |
" .
$unsuppressBox .
Xml::closeElement( 'table' ) .
Xml::closeElement( 'fieldset' );
$wgOut->addHtml( $table );
}
$wgOut->addHTML( Xml::element( 'h2', null, wfMsg( 'history' ) ) . "\n" );
if( $haveRevisions ) {
# The page's stored (deleted) history:
$wgOut->addHTML("");
$target = urlencode( $this->mTarget );
$remaining = $revisions->numRows();
$earliestLiveTime = $this->getEarliestTime( $this->mTargetObj );
while( $row = $revisions->fetchObject() ) {
$remaining--;
$wgOut->addHTML( $this->formatRevisionRow( $row, $earliestLiveTime, $remaining, $sk ) );
}
$revisions->free();
$wgOut->addHTML("
");
} else {
$wgOut->addWikiMsg( "nohistory" );
}
if( $haveFiles ) {
$wgOut->addHtml( Xml::element( 'h2', null, wfMsg( 'filehist' ) ) . "\n" );
$wgOut->addHtml( "" );
while( $row = $files->fetchObject() ) {
$wgOut->addHTML( $this->formatFileRow( $row, $sk ) );
}
$files->free();
$wgOut->addHTML( "
" );
}
if ( $this->mAllowed ) {
# Slip in the hidden controls here
$misc = Xml::hidden( 'target', $this->mTarget );
$misc .= Xml::hidden( 'wpEditToken', $wgUser->editToken() );
$misc .= Xml::closeElement( 'form' );
$wgOut->addHtml( $misc );
}
return true;
}
private function formatRevisionRow( $row, $earliestLiveTime, $remaining, $sk ) {
global $wgUser, $wgLang;
$rev = new Revision( array(
'page' => $this->mTargetObj->getArticleId(),
'comment' => $row->ar_comment,
'user' => $row->ar_user,
'user_text' => $row->ar_user_text,
'timestamp' => $row->ar_timestamp,
'minor_edit' => $row->ar_minor_edit,
'deleted' => $row->ar_deleted,
'len' => $row->ar_len ) );
$stxt = '';
$ts = wfTimestamp( TS_MW, $row->ar_timestamp );
if( $this->mAllowed ) {
$checkBox = Xml::check( "ts$ts" );
$titleObj = SpecialPage::getTitleFor( "Undelete" );
$pageLink = $this->getPageLink( $rev, $titleObj, $ts, $sk );
# Last link
if( !$rev->userCan( Revision::DELETED_TEXT ) ) {
$last = wfMsgHtml('diff');
} else if( $remaining > 0 || ($earliestLiveTime && $ts > $earliestLiveTime) ) {
$last = $sk->makeKnownLinkObj( $titleObj, wfMsgHtml('diff'),
"target=" . $this->mTargetObj->getPrefixedUrl() . "×tamp=$ts&diff=prev" );
} else {
$last = wfMsgHtml('diff');
}
} else {
$checkBox = '';
$pageLink = $wgLang->timeanddate( $ts, true );
$last = wfMsgHtml('diff');
}
$userLink = $sk->revUserTools( $rev );
if(!is_null($size = $row->ar_len)) {
$stxt = $sk->formatRevisionSize( $size );
}
$comment = $sk->revComment( $rev );
$revdlink = '';
if( $wgUser->isAllowed( 'deleterevision' ) ) {
$revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
if( !$rev->userCan( Revision::DELETED_RESTRICTED ) ) {
// If revision was hidden from sysops
$del = wfMsgHtml('rev-delundel');
} else {
$ts = wfTimestamp( TS_MW, $row->ar_timestamp );
$del = $sk->makeKnownLinkObj( $revdel,
wfMsgHtml('rev-delundel'),
'target=' . $this->mTargetObj->getPrefixedUrl() . "&artimestamp=$ts" );
// Bolden oversighted content
if( $rev->isDeleted( Revision::DELETED_RESTRICTED ) )
$del = "$del";
}
$revdlink = "($del)";
}
return "$checkBox $revdlink ($last) $pageLink . . $userLink $stxt $comment";
}
private function formatFileRow( $row, $sk ) {
global $wgUser, $wgLang;
$file = ArchivedFile::newFromRow( $row );
$ts = wfTimestamp( TS_MW, $row->fa_timestamp );
if( $this->mAllowed && $row->fa_storage_key ) {
$checkBox = Xml::check( "fileid" . $row->fa_id );
$key = urlencode( $row->fa_storage_key );
$target = urlencode( $this->mTarget );
$titleObj = SpecialPage::getTitleFor( "Undelete" );
$pageLink = $this->getFileLink( $file, $titleObj, $ts, $key, $sk );
} else {
$checkBox = '';
$pageLink = $wgLang->timeanddate( $ts, true );
}
$userLink = $this->getFileUser( $file, $sk );
$data =
wfMsg( 'widthheight',
$wgLang->formatNum( $row->fa_width ),
$wgLang->formatNum( $row->fa_height ) ) .
' (' .
wfMsg( 'nbytes', $wgLang->formatNum( $row->fa_size ) ) .
')';
$data = htmlspecialchars( $data );
$comment = $this->getFileComment( $file, $sk );
$revdlink = '';
if( $wgUser->isAllowed( 'deleterevision' ) ) {
$revdel = SpecialPage::getTitleFor( 'Revisiondelete' );
if( !$file->userCan(File::DELETED_RESTRICTED ) ) {
// If revision was hidden from sysops
$del = wfMsgHtml('rev-delundel');
} else {
$del = $sk->makeKnownLinkObj( $revdel,
wfMsgHtml('rev-delundel'),
'target=' . $this->mTargetObj->getPrefixedUrl() .
'&fileid=' . $row->fa_id );
// Bolden oversighted content
if( $file->isDeleted( File::DELETED_RESTRICTED ) )
$del = "$del";
}
$revdlink = "($del)";
}
return "$checkBox $revdlink $pageLink . . $userLink $data $comment\n";
}
private function getEarliestTime( $title ) {
$dbr = wfGetDB( DB_SLAVE );
if( $title->exists() ) {
$min = $dbr->selectField( 'revision',
'MIN(rev_timestamp)',
array( 'rev_page' => $title->getArticleId() ),
__METHOD__ );
return wfTimestampOrNull( TS_MW, $min );
}
return null;
}
/**
* Fetch revision text link if it's available to all users
* @return string
*/
function getPageLink( $rev, $titleObj, $ts, $sk ) {
global $wgLang;
if( !$rev->userCan(Revision::DELETED_TEXT) ) {
return '' . $wgLang->timeanddate( $ts, true ) . '';
} else {
$link = $sk->makeKnownLinkObj( $titleObj, $wgLang->timeanddate( $ts, true ),
"target=".$this->mTargetObj->getPrefixedUrl()."×tamp=$ts" );
if( $rev->isDeleted(Revision::DELETED_TEXT) )
$link = '' . $link . '';
return $link;
}
}
/**
* Fetch image view link if it's available to all users
* @return string
*/
function getFileLink( $file, $titleObj, $ts, $key, $sk ) {
global $wgLang;
if( !$file->userCan(File::DELETED_FILE) ) {
return '' . $wgLang->timeanddate( $ts, true ) . '';
} else {
$link = $sk->makeKnownLinkObj( $titleObj, $wgLang->timeanddate( $ts, true ),
"target=".$this->mTargetObj->getPrefixedUrl()."&file=$key" );
if( $file->isDeleted(File::DELETED_FILE) )
$link = '' . $link . '';
return $link;
}
}
/**
* Fetch file's user id if it's available to this user
* @return string
*/
function getFileUser( $file, $sk ) {
if( !$file->userCan(File::DELETED_USER) ) {
return '' . wfMsgHtml( 'rev-deleted-user' ) . '';
} else {
$link = $sk->userLink( $file->getRawUser(), $file->getRawUserText() ) .
$sk->userToolLinks( $file->getRawUser(), $file->getRawUserText() );
if( $file->isDeleted(File::DELETED_USER) )
$link = '' . $link . '';
return $link;
}
}
/**
* Fetch file upload comment if it's available to this user
* @return string
*/
function getFileComment( $file, $sk ) {
if( !$file->userCan(File::DELETED_COMMENT) ) {
return '';
} else {
$link = $sk->commentBlock( $file->getRawDescription() );
if( $file->isDeleted(File::DELETED_COMMENT) )
$link = '' . $link . '';
return $link;
}
}
function undelete() {
global $wgOut, $wgUser;
if ( wfReadOnly() ) {
$wgOut->readOnlyPage();
return;
}
if( !is_null( $this->mTargetObj ) ) {
$archive = new PageArchive( $this->mTargetObj );
$ok = $archive->undelete(
$this->mTargetTimestamp,
$this->mComment,
$this->mFileVersions,
$this->mUnsuppress );
if( is_array($ok) ) {
if ( $ok[1] ) // Undeleted file count
wfRunHooks( 'FileUndeleteComplete', array(
$this->mTargetObj, $this->mFileVersions,
$wgUser, $this->mComment) );
$skin = $wgUser->getSkin();
$link = $skin->makeKnownLinkObj( $this->mTargetObj );
$wgOut->addHtml( wfMsgWikiHtml( 'undeletedpage', $link ) );
} else {
$wgOut->showFatalError( wfMsg( "cannotundelete" ) );
$wgOut->addHtml( '' . wfMsgHtml( "undeleterevdel" ) . '
' );
}
// Show file deletion warnings and errors
$status = $archive->getFileStatus();
if( $status && !$status->isGood() ) {
$wgOut->addWikiText( $status->getWikiText( 'undelete-error-short', 'undelete-error-long' ) );
}
} else {
$wgOut->showFatalError( wfMsg( "cannotundelete" ) );
}
return false;
}
}