diff options
Diffstat (limited to 'includes/FileDeleteForm.php')
| -rw-r--r-- | includes/FileDeleteForm.php | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/includes/FileDeleteForm.php b/includes/FileDeleteForm.php new file mode 100644 index 00000000..ee165cd1 --- /dev/null +++ b/includes/FileDeleteForm.php @@ -0,0 +1,220 @@ +<?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(); + } + +}
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