--- /dev/null
+<?php
+
+/**
+ * File deletion user interface
+ *
+ * @addtogroup Media
+ * @author Rob Church <robchur@gmail.com>
+ */
+class FileDeleteForm {
+
+ private $title = null;
+ private $file = null;
+
+ private $oldfile = null;
+ private $oldimage = '';
+
+ /**
+ * Constructor
+ *
+ * @param File $file File we're deleting
+ */
+ public function __construct( $file ) {
+ $this->title = $file->getTitle();
+ $this->file = $file;
+ }
+
+ /**
+ * Fulfil the request; shows the form or deletes the file,
+ * pending authentication, confirmation, etc.
+ */
+ public function execute() {
+ global $wgOut, $wgRequest, $wgUser;
+ $this->setHeaders();
+
+ if( wfReadOnly() ) {
+ $wgOut->readOnlyPage();
+ return;
+ } elseif( !$wgUser->isLoggedIn() ) {
+ $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
+ return;
+ } elseif( !$wgUser->isAllowed( 'delete' ) ) {
+ $wgOut->permissionError( 'delete' );
+ return;
+ } elseif( $wgUser->isBlocked() ) {
+ $wgOut->blockedPage();
+ return;
+ }
+
+ $this->oldimage = $wgRequest->getText( 'oldimage', false );
+ $token = $wgRequest->getText( 'wpEditToken' );
+ if( $this->oldimage && !$this->isValidOldSpec() ) {
+ $wgOut->showUnexpectedValueError( 'oldimage', htmlspecialchars( $this->oldimage ) );
+ return;
+ }
+ if( $this->oldimage )
+ $this->oldfile = RepoGroup::singleton()->getLocalRepo()->newFromArchiveName( $this->title, $this->oldimage );
+
+ if( !$this->haveDeletableFile() ) {
+ $wgOut->addHtml( $this->prepareMessage( 'filedelete-nofile' ) );
+ $wgOut->addReturnTo( $this->title );
+ return;
+ }
+
+ // Perform the deletion if appropriate
+ if( $wgRequest->wasPosted() && $wgUser->matchEditToken( $token, $this->oldimage ) ) {
+ $comment = $wgRequest->getText( 'wpReason' );
+ if( $this->oldimage ) {
+ $status = $this->file->deleteOld( $this->oldimage, $comment );
+ if( $status->ok ) {
+ // Need to do a log item
+ $log = new LogPage( 'delete' );
+ $log->addEntry( 'delete', $this->title, wfMsg( 'deletedrevision' , $this->oldimage ) );
+ }
+ } else {
+ $status = $this->file->delete( $comment );
+ if( $status->ok ) {
+ // Need to delete the associated article
+ $article = new Article( $this->title );
+ $article->doDeleteArticle( $comment );
+ }
+ }
+ if( !$status->isGood() )
+ $wgOut->addWikiText( $status->getWikiText( 'filedeleteerror-short', 'filedeleteerror-long' ) );
+ if( $status->ok ) {
+ $wgOut->addHtml( $this->prepareMessage( 'filedelete-success' ) );
+ // Return to the main page if we just deleted all versions of the
+ // file, otherwise go back to the description page
+ $wgOut->addReturnTo( $this->oldimage ? $this->title : Title::newMainPage() );
+ }
+ return;
+ }
+
+ $this->showForm();
+ $this->showLogEntries();
+ }
+
+ /**
+ * Show the confirmation form
+ */
+ private function showForm() {
+ global $wgOut, $wgUser, $wgRequest;
+
+ $form = Xml::openElement( 'form', array( 'method' => 'post', 'action' => $this->getAction() ) );
+ $form .= Xml::hidden( 'wpEditToken', $wgUser->editToken( $this->oldimage ) );
+ $form .= '<fieldset><legend>' . wfMsgHtml( 'filedelete-legend' ) . '</legend>';
+ $form .= $this->prepareMessage( 'filedelete-intro' );
+
+ $form .= '<p>' . Xml::inputLabel( wfMsg( 'filedelete-comment' ), 'wpReason', 'wpReason',
+ 60, $wgRequest->getText( 'wpReason' ) ) . '</p>';
+ $form .= '<p>' . Xml::submitButton( wfMsg( 'filedelete-submit' ) ) . '</p>';
+ $form .= '</fieldset>';
+ $form .= '</form>';
+
+ $wgOut->addHtml( $form );
+ }
+
+ /**
+ * Show deletion log fragments pertaining to the current file
+ */
+ private function showLogEntries() {
+ global $wgOut;
+ $wgOut->addHtml( '<h2>' . htmlspecialchars( LogPage::logName( 'delete' ) ) . "</h2>\n" );
+ $reader = new LogViewer(
+ new LogReader(
+ new FauxRequest(
+ array(
+ 'type' => 'delete',
+ 'page' => $this->title->getPrefixedText(),
+ )
+ )
+ )
+ );
+ $reader->showList( $wgOut );
+ }
+
+ /**
+ * Prepare a message referring to the file being deleted,
+ * showing an appropriate message depending upon whether
+ * it's a current file or an old version
+ *
+ * @param string $message Message base
+ * @return string
+ */
+ private function prepareMessage( $message ) {
+ global $wgLang, $wgServer;
+ if( $this->oldimage ) {
+ return wfMsgExt(
+ "{$message}-old",
+ 'parse',
+ $this->title->getText(),
+ $wgLang->date( $this->getTimestamp(), true ),
+ $wgLang->time( $this->getTimestamp(), true ),
+ $wgServer . $this->file->getArchiveUrl( $this->oldimage )
+ );
+ } else {
+ return wfMsgExt(
+ $message,
+ 'parse',
+ $this->title->getText()
+ );
+ }
+ }
+
+ /**
+ * Set headers, titles and other bits
+ */
+ private function setHeaders() {
+ global $wgOut, $wgUser;
+ $wgOut->setPageTitle( wfMsg( 'filedelete', $this->title->getText() ) );
+ $wgOut->setRobotPolicy( 'noindex,nofollow' );
+ $wgOut->setSubtitle( wfMsg( 'filedelete-backlink', $wgUser->getSkin()->makeKnownLinkObj( $this->title ) ) );
+ }
+
+ /**
+ * Is the provided `oldimage` value valid?
+ *
+ * @return bool
+ */
+ private function isValidOldSpec() {
+ return strlen( $this->oldimage ) >= 16
+ && strpos( $this->oldimage, '/' ) === false
+ && strpos( $this->oldimage, '\\' ) === false;
+ }
+
+ /**
+ * Could we delete the file specified? If an `oldimage`
+ * value was provided, does it correspond to an
+ * existing, local, old version of this file?
+ *
+ * @return bool
+ */
+ private function haveDeletableFile() {
+ return $this->oldimage
+ ? $this->oldfile && $this->oldfile->exists() && $this->oldfile->isLocal()
+ : $this->file && $this->file->exists() && $this->file->isLocal();
+ }
+
+ /**
+ * Prepare the form action
+ *
+ * @return string
+ */
+ private function getAction() {
+ $q = array();
+ $q[] = 'action=delete';
+ if( $this->oldimage )
+ $q[] = 'oldimage=' . urlencode( $this->oldimage );
+ return $this->title->getLocalUrl( implode( '&', $q ) );
+ }
+
+ /**
+ * Extract the timestamp of the old version
+ *
+ * @return string
+ */
+ private function getTimestamp() {
+ return $this->oldfile->getTimestamp();
+ }
+
+}
\ No newline at end of file
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