execute(); } /** * implements Special:Upload * @ingroup SpecialPage */ class UploadForm { const SUCCESS = 0; const BEFORE_PROCESSING = 1; const LARGE_FILE_SERVER = 2; const EMPTY_FILE = 3; const MIN_LENGTH_PARTNAME = 4; const ILLEGAL_FILENAME = 5; const PROTECTED_PAGE = 6; const OVERWRITE_EXISTING_FILE = 7; const FILETYPE_MISSING = 8; const FILETYPE_BADTYPE = 9; const VERIFICATION_ERROR = 10; const UPLOAD_VERIFICATION_ERROR = 11; const UPLOAD_WARNING = 12; const INTERNAL_ERROR = 13; /**#@+ * @access private */ var $mComment, $mLicense, $mIgnoreWarning, $mCurlError; var $mDestName, $mTempPath, $mFileSize, $mFileProps; var $mCopyrightStatus, $mCopyrightSource, $mReUpload, $mAction, $mUploadClicked; var $mSrcName, $mSessionKey, $mStashed, $mDesiredDestName, $mRemoveTempFile, $mSourceType; var $mDestWarningAck, $mCurlDestHandle; var $mLocalFile; # Placeholders for text injection by hooks (must be HTML) # extensions should take care to _append_ to the present value var $uploadFormTextTop; var $uploadFormTextAfterSummary; const SESSION_VERSION = 1; /**#@-*/ /** * Constructor : initialise object * Get data POSTed through the form and assign them to the object * @param $request Data posted. */ function UploadForm( &$request ) { global $wgAllowCopyUploads; $this->mDesiredDestName = $request->getText( 'wpDestFile' ); $this->mIgnoreWarning = $request->getCheck( 'wpIgnoreWarning' ); $this->mComment = $request->getText( 'wpUploadDescription' ); $this->mForReUpload = $request->getBool( 'wpForReUpload' ); $this->mReUpload = $request->getCheck( 'wpReUpload' ); if( !$request->wasPosted() ) { # GET requests just give the main form; no data except destination # filename and description return; } # Placeholders for text injection by hooks (empty per default) $this->uploadFormTextTop = ""; $this->uploadFormTextAfterSummary = ""; $this->mUploadClicked = $request->getCheck( 'wpUpload' ); $this->mLicense = $request->getText( 'wpLicense' ); $this->mCopyrightStatus = $request->getText( 'wpUploadCopyStatus' ); $this->mCopyrightSource = $request->getText( 'wpUploadSource' ); $this->mWatchthis = $request->getBool( 'wpWatchthis' ); $this->mSourceType = $request->getText( 'wpSourceType' ); $this->mDestWarningAck = $request->getText( 'wpDestFileWarningAck' ); $this->mAction = $request->getVal( 'action' ); $this->mSessionKey = $request->getInt( 'wpSessionKey' ); if( !empty( $this->mSessionKey ) && isset( $_SESSION['wsUploadData'][$this->mSessionKey]['version'] ) && $_SESSION['wsUploadData'][$this->mSessionKey]['version'] == self::SESSION_VERSION ) { /** * Confirming a temporarily stashed upload. * We don't want path names to be forged, so we keep * them in the session on the server and just give * an opaque key to the user agent. */ $data = $_SESSION['wsUploadData'][$this->mSessionKey]; $this->mTempPath = $data['mTempPath']; $this->mFileSize = $data['mFileSize']; $this->mSrcName = $data['mSrcName']; $this->mFileProps = $data['mFileProps']; $this->mCurlError = 0/*UPLOAD_ERR_OK*/; $this->mStashed = true; $this->mRemoveTempFile = false; } else { /** *Check for a newly uploaded file. */ if( $wgAllowCopyUploads && $this->mSourceType == 'web' ) { $this->initializeFromUrl( $request ); } else { $this->initializeFromUpload( $request ); } } } /** * Initialize the uploaded file from PHP data * @access private */ function initializeFromUpload( $request ) { $this->mTempPath = $request->getFileTempName( 'wpUploadFile' ); $this->mFileSize = $request->getFileSize( 'wpUploadFile' ); $this->mSrcName = $request->getFileName( 'wpUploadFile' ); $this->mCurlError = $request->getUploadError( 'wpUploadFile' ); $this->mSessionKey = false; $this->mStashed = false; $this->mRemoveTempFile = false; // PHP will handle this } /** * Copy a web file to a temporary file * @access private */ function initializeFromUrl( $request ) { global $wgTmpDirectory; $url = $request->getText( 'wpUploadFileURL' ); $local_file = tempnam( $wgTmpDirectory, 'WEBUPLOAD' ); $this->mTempPath = $local_file; $this->mFileSize = 0; # Will be set by curlCopy $this->mCurlError = $this->curlCopy( $url, $local_file ); $pathParts = explode( '/', $url ); $this->mSrcName = array_pop( $pathParts ); $this->mSessionKey = false; $this->mStashed = false; // PHP won't auto-cleanup the file $this->mRemoveTempFile = file_exists( $local_file ); } /** * Safe copy from URL * Returns true if there was an error, false otherwise */ private function curlCopy( $url, $dest ) { global $wgUser, $wgOut, $wgHTTPProxy; if( !$wgUser->isAllowed( 'upload_by_url' ) ) { $wgOut->permissionRequired( 'upload_by_url' ); return true; } # Maybe remove some pasting blanks :-) $url = trim( $url ); if( stripos($url, 'http://') !== 0 && stripos($url, 'ftp://') !== 0 ) { # Only HTTP or FTP URLs $wgOut->showErrorPage( 'upload-proto-error', 'upload-proto-error-text' ); return true; } # Open temporary file $this->mCurlDestHandle = @fopen( $this->mTempPath, "wb" ); if( $this->mCurlDestHandle === false ) { # Could not open temporary file to write in $wgOut->showErrorPage( 'upload-file-error', 'upload-file-error-text'); return true; } $ch = curl_init(); curl_setopt( $ch, CURLOPT_HTTP_VERSION, 1.0); # Probably not needed, but apparently can work around some bug curl_setopt( $ch, CURLOPT_TIMEOUT, 10); # 10 seconds timeout curl_setopt( $ch, CURLOPT_LOW_SPEED_LIMIT, 512); # 0.5KB per second minimum transfer speed curl_setopt( $ch, CURLOPT_URL, $url); if( $wgHTTPProxy ) { curl_setopt( $ch, CURLOPT_PROXY, $wgHTTPProxy ); } curl_setopt( $ch, CURLOPT_WRITEFUNCTION, array( $this, 'uploadCurlCallback' ) ); curl_exec( $ch ); $error = curl_errno( $ch ) ? true : false; $errornum = curl_errno( $ch ); // if ( $error ) print curl_error ( $ch ) ; # Debugging output curl_close( $ch ); fclose( $this->mCurlDestHandle ); unset( $this->mCurlDestHandle ); if( $error ) { unlink( $dest ); if( wfEmptyMsg( "upload-curl-error$errornum", wfMsg("upload-curl-error$errornum") ) ) $wgOut->showErrorPage( 'upload-misc-error', 'upload-misc-error-text' ); else $wgOut->showErrorPage( "upload-curl-error$errornum", "upload-curl-error$errornum-text" ); } return $error; } /** * Callback function for CURL-based web transfer * Write data to file unless we've passed the length limit; * if so, abort immediately. * @access private */ function uploadCurlCallback( $ch, $data ) { global $wgMaxUploadSize; $length = strlen( $data ); $this->mFileSize += $length; if( $this->mFileSize > $wgMaxUploadSize ) { return 0; } fwrite( $this->mCurlDestHandle, $data ); return $length; } /** * Start doing stuff * @access public */ function execute() { global $wgUser, $wgOut; global $wgEnableUploads; # Check php's file_uploads setting if( !wfIniGetBool( 'file_uploads' ) ) { $wgOut->showErrorPage( 'uploaddisabled', 'php-uploaddisabledtext', array( $this->mDesiredDestName ) ); return; } # Check uploading enabled if( !$wgEnableUploads ) { $wgOut->showErrorPage( 'uploaddisabled', 'uploaddisabledtext', array( $this->mDesiredDestName ) ); return; } # Check permissions if( !$wgUser->isAllowed( 'upload' ) ) { if( !$wgUser->isLoggedIn() ) { $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' ); } else { $wgOut->permissionRequired( 'upload' ); } return; } # Check blocks if( $wgUser->isBlocked() ) { $wgOut->blockedPage(); return; } if( wfReadOnly() ) { $wgOut->readOnlyPage(); return; } if( $this->mReUpload ) { if( !$this->unsaveUploadedFile() ) { return; } # Because it is probably checked and shouldn't be $this->mIgnoreWarning = false; $this->mainUploadForm(); } else if( 'submit' == $this->mAction || $this->mUploadClicked ) { $this->processUpload(); } else { $this->mainUploadForm(); } $this->cleanupTempFile(); } /** * Do the upload * Checks are made in SpecialUpload::execute() * * @access private */ function processUpload(){ global $wgUser, $wgOut, $wgFileExtensions, $wgLang; $details = null; $value = null; $value = $this->internalProcessUpload( $details ); switch($value) { case self::SUCCESS: $wgOut->redirect( $this->mLocalFile->getTitle()->getFullURL() ); break; case self::BEFORE_PROCESSING: break; case self::LARGE_FILE_SERVER: $this->mainUploadForm( wfMsgHtml( 'largefileserver' ) ); break; case self::EMPTY_FILE: $this->mainUploadForm( wfMsgHtml( 'emptyfile' ) ); break; case self::MIN_LENGTH_PARTNAME: $this->mainUploadForm( wfMsgHtml( 'minlength1' ) ); break; case self::ILLEGAL_FILENAME: $filtered = $details['filtered']; $this->uploadError( wfMsgWikiHtml( 'illegalfilename', htmlspecialchars( $filtered ) ) ); break; case self::PROTECTED_PAGE: $wgOut->showPermissionsErrorPage( $details['permissionserrors'] ); break; case self::OVERWRITE_EXISTING_FILE: $errorText = $details['overwrite']; $this->uploadError( $wgOut->parse( $errorText ) ); break; case self::FILETYPE_MISSING: $this->uploadError( wfMsgExt( 'filetype-missing', array ( 'parseinline' ) ) ); break; case self::FILETYPE_BADTYPE: $finalExt = $details['finalExt']; $this->uploadError( wfMsgExt( 'filetype-banned-type', array( 'parseinline' ), htmlspecialchars( $finalExt ), $wgLang->commaList( $wgFileExtensions ), $wgLang->formatNum( count($wgFileExtensions) ) ) ); break; case self::VERIFICATION_ERROR: $veri = $details['veri']; $this->uploadError( $veri->toString() ); break; case self::UPLOAD_VERIFICATION_ERROR: $error = $details['error']; $this->uploadError( $error ); break; case self::UPLOAD_WARNING: $warning = $details['warning']; $this->uploadWarning( $warning ); break; case self::INTERNAL_ERROR: $internal = $details['internal']; $this->showError( $internal ); break; default: throw new MWException( __METHOD__ . ": Unknown value `{$value}`" ); } } /** * Really do the upload * Checks are made in SpecialUpload::execute() * * @param array $resultDetails contains result-specific dict of additional values * * @access private */ function internalProcessUpload( &$resultDetails ) { global $wgUser; if( !wfRunHooks( 'UploadForm:BeforeProcessing', array( &$this ) ) ) { wfDebug( "Hook 'UploadForm:BeforeProcessing' broke processing the file.\n" ); return self::BEFORE_PROCESSING; } /** * If there was no filename or a zero size given, give up quick. */ if( trim( $this->mSrcName ) == '' || empty( $this->mFileSize ) ) { return self::EMPTY_FILE; } /* Check for curl error */ if( $this->mCurlError ) { return self::BEFORE_PROCESSING; } /** * Chop off any directories in the given filename. Then * filter out illegal characters, and try to make a legible name * out of it. We'll strip some silently that Title would die on. */ if( $this->mDesiredDestName ) { $basename = $this->mDesiredDestName; } else { $basename = $this->mSrcName; } $filtered = wfStripIllegalFilenameChars( $basename ); /* Normalize to title form before we do any further processing */ $nt = Title::makeTitleSafe( NS_FILE, $filtered ); if( is_null( $nt ) ) { $resultDetails = array( 'filtered' => $filtered ); return self::ILLEGAL_FILENAME; } $filtered = $nt->getDBkey(); /** * We'll want to blacklist against *any* 'extension', and use * only the final one for the whitelist. */ list( $partname, $ext ) = $this->splitExtensions( $filtered ); if( count( $ext ) ) { $finalExt = $ext[count( $ext ) - 1]; } else { $finalExt = ''; } # If there was more than one "extension", reassemble the base # filename to prevent bogus complaints about length if( count( $ext ) > 1 ) { for( $i = 0; $i < count( $ext ) - 1; $i++ ) $partname .= '.' . $ext[$i]; } if( strlen( $partname ) < 1 ) { return self::MIN_LENGTH_PARTNAME; } $this->mLocalFile = wfLocalFile( $nt ); $this->mDestName = $this->mLocalFile->getName(); /** * If the image is protected, non-sysop users won't be able * to modify it by uploading a new revision. */ $permErrors = $nt->getUserPermissionsErrors( 'edit', $wgUser ); $permErrorsUpload = $nt->getUserPermissionsErrors( 'upload', $wgUser ); $permErrorsCreate = ( $nt->exists() ? array() : $nt->getUserPermissionsErrors( 'create', $wgUser ) ); if( $permErrors || $permErrorsUpload || $permErrorsCreate ) { // merge all the problems into one list, avoiding duplicates $permErrors = array_merge( $permErrors, wfArrayDiff2( $permErrorsUpload, $permErrors ) ); $permErrors = array_merge( $permErrors, wfArrayDiff2( $permErrorsCreate, $permErrors ) ); $resultDetails = array( 'permissionserrors' => $permErrors ); return self::PROTECTED_PAGE; } /** * In some cases we may forbid overwriting of existing files. */ $overwrite = $this->checkOverwrite( $this->mDestName ); if( $overwrite !== true ) { $resultDetails = array( 'overwrite' => $overwrite ); return self::OVERWRITE_EXISTING_FILE; } /* Don't allow users to override the blacklist (check file extension) */ global $wgCheckFileExtensions, $wgStrictFileExtensions; global $wgFileExtensions, $wgFileBlacklist; if ($finalExt == '') { return self::FILETYPE_MISSING; } elseif ( $this->checkFileExtensionList( $ext, $wgFileBlacklist ) || ($wgCheckFileExtensions && $wgStrictFileExtensions && !$this->checkFileExtension( $finalExt, $wgFileExtensions ) ) ) { $resultDetails = array( 'finalExt' => $finalExt ); return self::FILETYPE_BADTYPE; } /** * Look at the contents of the file; if we can recognize the * type but it's corrupt or data of the wrong type, we should * probably not accept it. */ if( !$this->mStashed ) { $this->mFileProps = File::getPropsFromPath( $this->mTempPath, $finalExt ); $this->checkMacBinary(); $veri = $this->verify( $this->mTempPath, $finalExt ); if( $veri !== true ) { //it's a wiki error... $resultDetails = array( 'veri' => $veri ); return self::VERIFICATION_ERROR; } /** * Provide an opportunity for extensions to add further checks */ $error = ''; if( !wfRunHooks( 'UploadVerification', array( $this->mDestName, $this->mTempPath, &$error ) ) ) { $resultDetails = array( 'error' => $error ); return self::UPLOAD_VERIFICATION_ERROR; } } /** * Check for non-fatal conditions */ if ( ! $this->mIgnoreWarning ) { $warning = ''; $comparableName = str_replace( ' ', '_', $basename ); global $wgCapitalLinks, $wgContLang; if ( $wgCapitalLinks ) { $comparableName = $wgContLang->ucfirst( $comparableName ); } if( $comparableName !== $filtered ) { $warning .= '
  • '.wfMsgHtml( 'badfilename', htmlspecialchars( $this->mDestName ) ).'
  • '; } global $wgCheckFileExtensions; if ( $wgCheckFileExtensions ) { if ( !$this->checkFileExtension( $finalExt, $wgFileExtensions ) ) { global $wgLang; $warning .= '
  • ' . wfMsgExt( 'filetype-unwanted-type', array( 'parseinline' ), htmlspecialchars( $finalExt ), $wgLang->commaList( $wgFileExtensions ), $wgLang->formatNum( count($wgFileExtensions) ) ) . '
  • '; } } global $wgUploadSizeWarning; if ( $wgUploadSizeWarning && ( $this->mFileSize > $wgUploadSizeWarning ) ) { $skin = $wgUser->getSkin(); $wsize = $skin->formatSize( $wgUploadSizeWarning ); $asize = $skin->formatSize( $this->mFileSize ); $warning .= '
  • ' . wfMsgHtml( 'large-file', $wsize, $asize ) . '
  • '; } if ( $this->mFileSize == 0 ) { $warning .= '
  • '.wfMsgHtml( 'emptyfile' ).'
  • '; } if ( !$this->mDestWarningAck ) { $warning .= self::getExistsWarning( $this->mLocalFile ); } $warning .= $this->getDupeWarning( $this->mTempPath, $finalExt, $nt ); if( $warning != '' ) { /** * Stash the file in a temporary location; the user can choose * to let it through and we'll complete the upload then. */ $resultDetails = array( 'warning' => $warning ); return self::UPLOAD_WARNING; } } /** * Try actually saving the thing... * It will show an error form on failure. */ if( !$this->mForReUpload ) { $pageText = self::getInitialPageText( $this->mComment, $this->mLicense, $this->mCopyrightStatus, $this->mCopyrightSource ); } $status = $this->mLocalFile->upload( $this->mTempPath, $this->mComment, $pageText, File::DELETE_SOURCE, $this->mFileProps ); if ( !$status->isGood() ) { $resultDetails = array( 'internal' => $status->getWikiText() ); return self::INTERNAL_ERROR; } else { if ( $this->mWatchthis ) { global $wgUser; $wgUser->addWatch( $this->mLocalFile->getTitle() ); } // Success, redirect to description page $img = null; // @todo: added to avoid passing a ref to null - should this be defined somewhere? wfRunHooks( 'UploadComplete', array( &$this ) ); return self::SUCCESS; } } /** * Do existence checks on a file and produce a warning * This check is static and can be done pre-upload via AJAX * Returns an HTML fragment consisting of one or more LI elements if there is a warning * Returns an empty string if there is no warning */ static function getExistsWarning( $file ) { global $wgUser, $wgContLang; // Check for uppercase extension. We allow these filenames but check if an image // with lowercase extension exists already $warning = ''; $align = $wgContLang->isRtl() ? 'left' : 'right'; if( strpos( $file->getName(), '.' ) == false ) { $partname = $file->getName(); $rawExtension = ''; } else { $n = strrpos( $file->getName(), '.' ); $rawExtension = substr( $file->getName(), $n + 1 ); $partname = substr( $file->getName(), 0, $n ); } $sk = $wgUser->getSkin(); if ( $rawExtension != $file->getExtension() ) { // We're not using the normalized form of the extension. // Normal form is lowercase, using most common of alternate // extensions (eg 'jpg' rather than 'JPEG'). // // Check for another file using the normalized form... $nt_lc = Title::makeTitle( NS_FILE, $partname . '.' . $file->getExtension() ); $file_lc = wfLocalFile( $nt_lc ); } else { $file_lc = false; } if( $file->exists() ) { $dlink = $sk->makeKnownLinkObj( $file->getTitle() ); if ( $file->allowInlineDisplay() ) { $dlink2 = $sk->makeImageLinkObj( $file->getTitle(), wfMsgExt( 'fileexists-thumb', 'parseinline' ), $file->getName(), $align, array(), false, true ); } elseif ( !$file->allowInlineDisplay() && $file->isSafeFile() ) { $icon = $file->iconThumb(); $dlink2 = '
    ' . $icon->toHtml( array( 'desc-link' => true ) ) . '
    ' . $dlink . '
    '; } else { $dlink2 = ''; } $warning .= '
  • ' . wfMsgExt( 'fileexists', array('parseinline','replaceafter'), $dlink ) . '
  • ' . $dlink2; } elseif( $file->getTitle()->getArticleID() ) { $lnk = $sk->makeKnownLinkObj( $file->getTitle(), '', 'redirect=no' ); $warning .= '
  • ' . wfMsgExt( 'filepageexists', array( 'parseinline', 'replaceafter' ), $lnk ) . '
  • '; } elseif ( $file_lc && $file_lc->exists() ) { # Check if image with lowercase extension exists. # It's not forbidden but in 99% it makes no sense to upload the same filename with uppercase extension $dlink = $sk->makeKnownLinkObj( $nt_lc ); if ( $file_lc->allowInlineDisplay() ) { $dlink2 = $sk->makeImageLinkObj( $nt_lc, wfMsgExt( 'fileexists-thumb', 'parseinline' ), $nt_lc->getText(), $align, array(), false, true ); } elseif ( !$file_lc->allowInlineDisplay() && $file_lc->isSafeFile() ) { $icon = $file_lc->iconThumb(); $dlink2 = '
    ' . $icon->toHtml( array( 'desc-link' => true ) ) . '
    ' . $dlink . '
    '; } else { $dlink2 = ''; } $warning .= '
  • ' . wfMsgExt( 'fileexists-extension', 'parsemag', $file->getTitle()->getPrefixedText(), $dlink ) . '
  • ' . $dlink2; } elseif ( ( substr( $partname , 3, 3 ) == 'px-' || substr( $partname , 2, 3 ) == 'px-' ) && ereg( "[0-9]{2}" , substr( $partname , 0, 2) ) ) { # Check for filenames like 50px- or 180px-, these are mostly thumbnails $nt_thb = Title::newFromText( substr( $partname , strpos( $partname , '-' ) +1 ) . '.' . $rawExtension ); $file_thb = wfLocalFile( $nt_thb ); if ($file_thb->exists() ) { # Check if an image without leading '180px-' (or similiar) exists $dlink = $sk->makeKnownLinkObj( $nt_thb); if ( $file_thb->allowInlineDisplay() ) { $dlink2 = $sk->makeImageLinkObj( $nt_thb, wfMsgExt( 'fileexists-thumb', 'parseinline' ), $nt_thb->getText(), $align, array(), false, true ); } elseif ( !$file_thb->allowInlineDisplay() && $file_thb->isSafeFile() ) { $icon = $file_thb->iconThumb(); $dlink2 = '
    ' . $icon->toHtml( array( 'desc-link' => true ) ) . '
    ' . $dlink . '
    '; } else { $dlink2 = ''; } $warning .= '
  • ' . wfMsgExt( 'fileexists-thumbnail-yes', 'parsemag', $dlink ) . '
  • ' . $dlink2; } else { # Image w/o '180px-' does not exists, but we do not like these filenames $warning .= '
  • ' . wfMsgExt( 'file-thumbnail-no', 'parseinline' , substr( $partname , 0, strpos( $partname , '-' ) +1 ) ) . '
  • '; } } $filenamePrefixBlacklist = self::getFilenamePrefixBlacklist(); # Do the match foreach( $filenamePrefixBlacklist as $prefix ) { if ( substr( $partname, 0, strlen( $prefix ) ) == $prefix ) { $warning .= '
  • ' . wfMsgExt( 'filename-bad-prefix', 'parseinline', $prefix ) . '
  • '; break; } } if ( $file->wasDeleted() && !$file->exists() ) { # If the file existed before and was deleted, warn the user of this # Don't bother doing so if the file exists now, however $ltitle = SpecialPage::getTitleFor( 'Log' ); $llink = $sk->makeKnownLinkObj( $ltitle, wfMsgHtml( 'deletionlog' ), 'type=delete&page=' . $file->getTitle()->getPrefixedUrl() ); $warning .= '
  • ' . wfMsgWikiHtml( 'filewasdeleted', $llink ) . '
  • '; } return $warning; } /** * Get a list of warnings * * @param string local filename, e.g. 'file exists', 'non-descriptive filename' * @return array list of warning messages */ static function ajaxGetExistsWarning( $filename ) { $file = wfFindFile( $filename ); if( !$file ) { // Force local file so we have an object to do further checks against // if there isn't an exact match... $file = wfLocalFile( $filename ); } $s = ' '; if ( $file ) { $warning = self::getExistsWarning( $file ); if ( $warning !== '' ) { $s = ""; } } return $s; } /** * Render a preview of a given license for the AJAX preview on upload * * @param string $license * @return string */ public static function ajaxGetLicensePreview( $license ) { global $wgParser, $wgUser; $text = '{{' . $license . '}}'; $title = Title::makeTitle( NS_FILE, 'Sample.jpg' ); $options = ParserOptions::newFromUser( $wgUser ); // Expand subst: first, then live templates... $text = $wgParser->preSaveTransform( $text, $title, $wgUser, $options ); $output = $wgParser->parse( $text, $title, $options ); return $output->getText(); } /** * Check for duplicate files and throw up a warning before the upload * completes. */ function getDupeWarning( $tempfile, $extension, $destinationTitle ) { $hash = File::sha1Base36( $tempfile ); $dupes = RepoGroup::singleton()->findBySha1( $hash ); $archivedImage = new ArchivedFile( null, 0, $hash.".$extension" ); if( $dupes ) { global $wgOut; $msg = ""; foreach( $dupes as $file ) { $title = $file->getTitle(); # Don't throw the warning when the titles are the same, it's a reupload # and highly redundant. if ( !$title->equals( $destinationTitle ) || !$this->mForReUpload ) { $msg .= $title->getPrefixedText() . "|" . $title->getText() . "\n"; } } $msg .= ""; return "
  • " . wfMsgExt( "file-exists-duplicate", array( "parse" ), count( $dupes ) ) . $wgOut->parse( $msg ) . "
  • \n"; } elseif ( $archivedImage->getID() > 0 ) { global $wgOut; $name = Title::makeTitle( NS_FILE, $archivedImage->getName() )->getPrefixedText(); return Xml::tags( 'li', null, wfMsgExt( 'file-deleted-duplicate', array( 'parseinline' ), array( $name ) ) ); } else { return ''; } } /** * Get a list of blacklisted filename prefixes from [[MediaWiki:filename-prefix-blacklist]] * * @return array list of prefixes */ public static function getFilenamePrefixBlacklist() { $blacklist = array(); $message = wfMsgForContent( 'filename-prefix-blacklist' ); if( $message && !( wfEmptyMsg( 'filename-prefix-blacklist', $message ) || $message == '-' ) ) { $lines = explode( "\n", $message ); foreach( $lines as $line ) { // Remove comment lines $comment = substr( trim( $line ), 0, 1 ); if ( $comment == '#' || $comment == '' ) { continue; } // Remove additional comments after a prefix $comment = strpos( $line, '#' ); if ( $comment > 0 ) { $line = substr( $line, 0, $comment-1 ); } $blacklist[] = trim( $line ); } } return $blacklist; } /** * Stash a file in a temporary directory for later processing * after the user has confirmed it. * * If the user doesn't explicitly cancel or accept, these files * can accumulate in the temp directory. * * @param string $saveName - the destination filename * @param string $tempName - the source temporary file to save * @return string - full path the stashed file, or false on failure * @access private */ function saveTempUploadedFile( $saveName, $tempName ) { global $wgOut; $repo = RepoGroup::singleton()->getLocalRepo(); $status = $repo->storeTemp( $saveName, $tempName ); if ( !$status->isGood() ) { $this->showError( $status->getWikiText() ); return false; } else { return $status->value; } } /** * Stash a file in a temporary directory for later processing, * and save the necessary descriptive info into the session. * Returns a key value which will be passed through a form * to pick up the path info on a later invocation. * * @return int * @access private */ function stashSession() { $stash = $this->saveTempUploadedFile( $this->mDestName, $this->mTempPath ); if( !$stash ) { # Couldn't save the file. return false; } $key = mt_rand( 0, 0x7fffffff ); $_SESSION['wsUploadData'][$key] = array( 'mTempPath' => $stash, 'mFileSize' => $this->mFileSize, 'mSrcName' => $this->mSrcName, 'mFileProps' => $this->mFileProps, 'version' => self::SESSION_VERSION, ); return $key; } /** * Remove a temporarily kept file stashed by saveTempUploadedFile(). * @access private * @return success */ function unsaveUploadedFile() { global $wgOut; if( !$this->mTempPath ) return true; // nothing to delete $repo = RepoGroup::singleton()->getLocalRepo(); $success = $repo->freeTemp( $this->mTempPath ); if ( ! $success ) { $wgOut->showFileDeleteError( $this->mTempPath ); return false; } else { return true; } } /* -------------------------------------------------------------- */ /** * @param string $error as HTML * @access private */ function uploadError( $error ) { global $wgOut; $wgOut->addHTML( '

    ' . wfMsgHtml( 'uploadwarning' ) . "

    \n" ); $wgOut->addHTML( '' . $error . '' ); } /** * There's something wrong with this file, not enough to reject it * totally but we require manual intervention to save it for real. * Stash it away, then present a form asking to confirm or cancel. * * @param string $warning as HTML * @access private */ function uploadWarning( $warning ) { global $wgOut; global $wgUseCopyrightUpload; $this->mSessionKey = $this->stashSession(); if( !$this->mSessionKey ) { # Couldn't save file; an error has been displayed so let's go. return; } $wgOut->addHTML( '

    ' . wfMsgHtml( 'uploadwarning' ) . "

    \n" ); $wgOut->addHTML( '\n" ); $titleObj = SpecialPage::getTitleFor( 'Upload' ); if ( $wgUseCopyrightUpload ) { $copyright = Xml::hidden( 'wpUploadCopyStatus', $this->mCopyrightStatus ) . "\n" . Xml::hidden( 'wpUploadSource', $this->mCopyrightSource ) . "\n"; } else { $copyright = ''; } $wgOut->addHTML( Xml::openElement( 'form', array( 'method' => 'post', 'action' => $titleObj->getLocalURL( 'action=submit' ), 'enctype' => 'multipart/form-data', 'id' => 'uploadwarning' ) ) . "\n" . Xml::hidden( 'wpIgnoreWarning', '1' ) . "\n" . Xml::hidden( 'wpSessionKey', $this->mSessionKey ) . "\n" . Xml::hidden( 'wpUploadDescription', $this->mComment ) . "\n" . Xml::hidden( 'wpLicense', $this->mLicense ) . "\n" . Xml::hidden( 'wpDestFile', $this->mDesiredDestName ) . "\n" . Xml::hidden( 'wpWatchthis', $this->mWatchthis ) . "\n" . "{$copyright}
    " . Xml::submitButton( wfMsg( 'ignorewarning' ), array ( 'name' => 'wpUpload', 'id' => 'wpUpload', 'checked' => 'checked' ) ) . ' ' . Xml::submitButton( wfMsg( 'reuploaddesc' ), array ( 'name' => 'wpReUpload', 'id' => 'wpReUpload' ) ) . Xml::closeElement( 'form' ) . "\n" ); } /** * Displays the main upload form, optionally with a highlighted * error message up at the top. * * @param string $msg as HTML * @access private */ function mainUploadForm( $msg='' ) { global $wgOut, $wgUser, $wgLang, $wgMaxUploadSize; global $wgUseCopyrightUpload, $wgUseAjax, $wgAjaxUploadDestCheck, $wgAjaxLicensePreview; global $wgRequest, $wgAllowCopyUploads; global $wgStylePath, $wgStyleVersion; $useAjaxDestCheck = $wgUseAjax && $wgAjaxUploadDestCheck; $useAjaxLicensePreview = $wgUseAjax && $wgAjaxLicensePreview; $adc = wfBoolToStr( $useAjaxDestCheck ); $alp = wfBoolToStr( $useAjaxLicensePreview ); $autofill = wfBoolToStr( $this->mDesiredDestName == '' ); $wgOut->addScript( "" ); $wgOut->addScriptFile( 'upload.js' ); $wgOut->addScriptFile( 'edit.js' ); // For support if( !wfRunHooks( 'UploadForm:initial', array( &$this ) ) ) { wfDebug( "Hook 'UploadForm:initial' broke output of the upload form\n" ); return false; } if( $this->mDesiredDestName ) { $title = Title::makeTitleSafe( NS_FILE, $this->mDesiredDestName ); // Show a subtitle link to deleted revisions (to sysops et al only) if( $title instanceof Title && ( $count = $title->isDeleted() ) > 0 && $wgUser->isAllowed( 'deletedhistory' ) ) { $link = wfMsgExt( $wgUser->isAllowed( 'delete' ) ? 'thisisdeleted' : 'viewdeleted', array( 'parse', 'replaceafter' ), $wgUser->getSkin()->makeKnownLinkObj( SpecialPage::getTitleFor( 'Undelete', $title->getPrefixedText() ), wfMsgExt( 'restorelink', array( 'parsemag', 'escape' ), $count ) ) ); $wgOut->addHTML( "
    {$link}
    " ); } // Show the relevant lines from deletion log (for still deleted files only) if( $title instanceof Title && $title->isDeletedQuick() && !$title->exists() ) { $this->showDeletionLog( $wgOut, $title->getPrefixedText() ); } } $cols = intval($wgUser->getOption( 'cols' )); if( $wgUser->getOption( 'editwidth' ) ) { $width = " style=\"width:100%\""; } else { $width = ''; } if ( '' != $msg ) { $sub = wfMsgHtml( 'uploaderror' ); $wgOut->addHTML( "

    {$sub}

    \n" . "{$msg}\n" ); } $wgOut->addHTML( '
    ' ); $wgOut->addWikiMsg( 'uploadtext', $this->mDesiredDestName ); $wgOut->addHTML( "
    \n" ); # Print a list of allowed file extensions, if so configured. We ignore # MIME type here, it's incomprehensible to most people and too long. global $wgCheckFileExtensions, $wgStrictFileExtensions, $wgFileExtensions, $wgFileBlacklist; $allowedExtensions = ''; if( $wgCheckFileExtensions ) { if( $wgStrictFileExtensions ) { # Everything not permitted is banned $extensionsList = '
    ' . wfMsgWikiHtml( 'upload-permitted', $wgLang->commaList( $wgFileExtensions ) ) . "
    \n"; } else { # We have to list both preferred and prohibited $extensionsList = '
    ' . wfMsgWikiHtml( 'upload-preferred', $wgLang->commaList( $wgFileExtensions ) ) . "
    \n" . '
    ' . wfMsgWikiHtml( 'upload-prohibited', $wgLang->commaList( $wgFileBlacklist ) ) . "
    \n"; } } else { # Everything is permitted. $extensionsList = ''; } # Get the maximum file size from php.ini as $wgMaxUploadSize works for uploads from URL via CURL only # See http://www.php.net/manual/en/ini.core.php#ini.upload-max-filesize for possible values of upload_max_filesize $val = trim( ini_get( 'upload_max_filesize' ) ); $last = strtoupper( ( substr( $val, -1 ) ) ); switch( $last ) { case 'G': $val2 = substr( $val, 0, -1 ) * 1024 * 1024 * 1024; break; case 'M': $val2 = substr( $val, 0, -1 ) * 1024 * 1024; break; case 'K': $val2 = substr( $val, 0, -1 ) * 1024; break; default: $val2 = $val; } $val2 = $wgAllowCopyUploads ? min( $wgMaxUploadSize, $val2 ) : $val2; $maxUploadSize = '
    ' . wfMsgExt( 'upload-maxfilesize', array( 'parseinline', 'escapenoentities' ), $wgLang->formatSize( $val2 ) ) . "
    \n"; $sourcefilename = wfMsgExt( 'sourcefilename', array( 'parseinline', 'escapenoentities' ) ); $destfilename = wfMsgExt( 'destfilename', array( 'parseinline', 'escapenoentities' ) ); $msg = $this->mForReUpload ? 'filereuploadsummary' : 'fileuploadsummary'; $summary = wfMsgExt( $msg, 'parseinline' ); $licenses = new Licenses(); $license = wfMsgExt( 'license', array( 'parseinline' ) ); $nolicense = wfMsgHtml( 'nolicense' ); $licenseshtml = $licenses->getHtml(); $ulb = wfMsgHtml( 'uploadbtn' ); $titleObj = SpecialPage::getTitleFor( 'Upload' ); $encDestName = htmlspecialchars( $this->mDesiredDestName ); $watchChecked = $this->watchCheck() ? 'checked="checked"' : ''; # Re-uploads should not need "file exist already" warnings $warningChecked = ($this->mIgnoreWarning || $this->mForReUpload) ? 'checked="checked"' : ''; // Prepare form for upload or upload/copy if( $wgAllowCopyUploads && $wgUser->isAllowed( 'upload_by_url' ) ) { $filename_form = "" . "" . wfMsgHTML( 'upload_source_file' ) . "
    " . "" . "" . wfMsgHtml( 'upload_source_url' ) ; } else { $filename_form = "mDesiredDestName?"":"onchange='fillDestFilename(\"wpUploadFile\")' ") . "size='60' />" . "" ; } if ( $useAjaxDestCheck ) { $warningRow = " "; $destOnkeyup = 'onkeyup="wgUploadWarningObj.keypress();"'; } else { $warningRow = ''; $destOnkeyup = ''; } $encComment = htmlspecialchars( $this->mComment ); $wgOut->addHTML( Xml::openElement( 'form', array( 'method' => 'post', 'action' => $titleObj->getLocalURL(), 'enctype' => 'multipart/form-data', 'id' => 'mw-upload-form' ) ) . Xml::openElement( 'fieldset' ) . Xml::element( 'legend', null, wfMsg( 'upload' ) ) . Xml::openElement( 'table', array( 'border' => '0', 'id' => 'mw-upload-table' ) ) . " {$this->uploadFormTextTop} {$filename_form} {$maxUploadSize} {$extensionsList} " ); if( $this->mForReUpload ) { $wgOut->addHTML( Xml::hidden( 'wpDestFile', $this->mDesiredDestName, array('id'=>'wpDestFile','tabindex'=>2) ) . "" . $encDestName . "" ); } else { $wgOut->addHTML( "" ); } $wgOut->addHTML( " {$this->uploadFormTextAfterSummary} " ); # Re-uploads should not need license info if ( !$this->mForReUpload && $licenseshtml != '' ) { global $wgStylePath; $wgOut->addHTML( " " ); if( $useAjaxLicensePreview ) { $wgOut->addHTML( " " ); } } if ( !$this->mForReUpload && $wgUseCopyrightUpload ) { $filestatus = wfMsgExt( 'filestatus', 'escapenoentities' ); $copystatus = htmlspecialchars( $this->mCopyrightStatus ); $filesource = wfMsgExt( 'filesource', 'escapenoentities' ); $uploadsource = htmlspecialchars( $this->mCopyrightSource ); $wgOut->addHTML( " " ); } $wgOut->addHTML( " $warningRow getSkin()->tooltipAndAccesskey( 'upload' ) . " /> " ); $wgOut->addHTML( '
    ' ); $wgOut->addWikiMsgArray( 'edittools', array(), array( 'content' ) ); $wgOut->addHTML( '
    ' ); $wgOut->addHTML( " " . Xml::closeElement( 'table' ) . Xml::hidden( 'wpDestFileWarningAck', '', array( 'id' => 'wpDestFileWarningAck' ) ) . Xml::hidden( 'wpForReUpload', $this->mForReUpload, array( 'id' => 'wpForReUpload' ) ) . Xml::closeElement( 'fieldset' ) . Xml::closeElement( 'form' ) ); $uploadfooter = wfMsgNoTrans( 'uploadfooter' ); if( $uploadfooter != '-' && !wfEmptyMsg( 'uploadfooter', $uploadfooter ) ){ $wgOut->addWikiText( '' ); } } /* -------------------------------------------------------------- */ /** * See if we should check the 'watch this page' checkbox on the form * based on the user's preferences and whether we're being asked * to create a new file or update an existing one. * * In the case where 'watch edits' is off but 'watch creations' is on, * we'll leave the box unchecked. * * Note that the page target can be changed *on the form*, so our check * state can get out of sync. */ function watchCheck() { global $wgUser; if( $wgUser->getOption( 'watchdefault' ) ) { // Watch all edits! return true; } $local = wfLocalFile( $this->mDesiredDestName ); if( $local && $local->exists() ) { // We're uploading a new version of an existing file. // No creation, so don't watch it if we're not already. return $local->getTitle()->userIsWatching(); } else { // New page should get watched if that's our option. return $wgUser->getOption( 'watchcreations' ); } } /** * Split a file into a base name and all dot-delimited 'extensions' * on the end. Some web server configurations will fall back to * earlier pseudo-'extensions' to determine type and execute * scripts, so the blacklist needs to check them all. * * @return array */ public function splitExtensions( $filename ) { $bits = explode( '.', $filename ); $basename = array_shift( $bits ); return array( $basename, $bits ); } /** * Perform case-insensitive match against a list of file extensions. * Returns true if the extension is in the list. * * @param string $ext * @param array $list * @return bool */ function checkFileExtension( $ext, $list ) { return in_array( strtolower( $ext ), $list ); } /** * Perform case-insensitive match against a list of file extensions. * Returns true if any of the extensions are in the list. * * @param array $ext * @param array $list * @return bool */ public function checkFileExtensionList( $ext, $list ) { foreach( $ext as $e ) { if( in_array( strtolower( $e ), $list ) ) { return true; } } return false; } /** * Verifies that it's ok to include the uploaded file * * @param string $tmpfile the full path of the temporary file to verify * @param string $extension The filename extension that the file is to be served with * @return mixed true of the file is verified, a WikiError object otherwise. */ function verify( $tmpfile, $extension ) { #magically determine mime type $magic = MimeMagic::singleton(); $mime = $magic->guessMimeType($tmpfile,false); #check mime type, if desired global $wgVerifyMimeType; if ($wgVerifyMimeType) { wfDebug ( "\n\nmime: <$mime> extension: <$extension>\n\n"); #check mime type against file extension if( !self::verifyExtension( $mime, $extension ) ) { return new WikiErrorMsg( 'uploadcorrupt' ); } #check mime type blacklist global $wgMimeTypeBlacklist; if( isset($wgMimeTypeBlacklist) && !is_null($wgMimeTypeBlacklist) ) { if ( $this->checkFileExtension( $mime, $wgMimeTypeBlacklist ) ) { return new WikiErrorMsg( 'filetype-badmime', htmlspecialchars( $mime ) ); } # Check IE type $fp = fopen( $tmpfile, 'rb' ); $chunk = fread( $fp, 256 ); fclose( $fp ); $extMime = $magic->guessTypesForExtension( $extension ); $ieTypes = $magic->getIEMimeTypes( $tmpfile, $chunk, $extMime ); foreach ( $ieTypes as $ieType ) { if ( $this->checkFileExtension( $ieType, $wgMimeTypeBlacklist ) ) { return new WikiErrorMsg( 'filetype-bad-ie-mime', $ieType ); } } } } #check for htmlish code and javascript if( $this->detectScript ( $tmpfile, $mime, $extension ) ) { return new WikiErrorMsg( 'uploadscripted' ); } if( $extension == 'svg' || $mime == 'image/svg+xml' ) { if( $this->detectScriptInSvg( $tmpfile ) ) { return new WikiErrorMsg( 'uploadscripted' ); } } /** * Scan the uploaded file for viruses */ $virus= $this->detectVirus($tmpfile); if ( $virus ) { return new WikiErrorMsg( 'uploadvirus', htmlspecialchars($virus) ); } wfDebug( __METHOD__.": all clear; passing.\n" ); return true; } /** * Checks if the mime type of the uploaded file matches the file extension. * * @param string $mime the mime type of the uploaded file * @param string $extension The filename extension that the file is to be served with * @return bool */ static function verifyExtension( $mime, $extension ) { $magic = MimeMagic::singleton(); if ( ! $mime || $mime == 'unknown' || $mime == 'unknown/unknown' ) if ( ! $magic->isRecognizableExtension( $extension ) ) { wfDebug( __METHOD__.": passing file with unknown detected mime type; " . "unrecognized extension '$extension', can't verify\n" ); return true; } else { wfDebug( __METHOD__.": rejecting file with unknown detected mime type; ". "recognized extension '$extension', so probably invalid file\n" ); return false; } $match= $magic->isMatchingExtension($extension,$mime); if ($match===NULL) { wfDebug( __METHOD__.": no file extension known for mime type $mime, passing file\n" ); return true; } elseif ($match===true) { wfDebug( __METHOD__.": mime type $mime matches extension $extension, passing file\n" ); #TODO: if it's a bitmap, make sure PHP or ImageMagic resp. can handle it! return true; } else { wfDebug( __METHOD__.": mime type $mime mismatches file extension $extension, rejecting file\n" ); return false; } } /** * Heuristic for detecting files that *could* contain JavaScript instructions or * things that may look like HTML to a browser and are thus * potentially harmful. The present implementation will produce false positives in some situations. * * @param string $file Pathname to the temporary upload file * @param string $mime The mime type of the file * @param string $extension The extension of the file * @return bool true if the file contains something looking like embedded scripts */ function detectScript($file, $mime, $extension) { global $wgAllowTitlesInSVG; #ugly hack: for text files, always look at the entire file. #For binarie field, just check the first K. if (strpos($mime,'text/')===0) $chunk = file_get_contents( $file ); else { $fp = fopen( $file, 'rb' ); $chunk = fread( $fp, 1024 ); fclose( $fp ); } $chunk= strtolower( $chunk ); if (!$chunk) return false; #decode from UTF-16 if needed (could be used for obfuscation). if (substr($chunk,0,2)=="\xfe\xff") $enc= "UTF-16BE"; elseif (substr($chunk,0,2)=="\xff\xfe") $enc= "UTF-16LE"; else $enc= NULL; if ($enc) $chunk= iconv($enc,"ASCII//IGNORE",$chunk); $chunk= trim($chunk); #FIXME: convert from UTF-16 if necessarry! wfDebug("SpecialUpload::detectScript: checking for embedded scripts and HTML stuff\n"); #check for HTML doctype if (eregi("filterMatch; } /** * @todo Replace this with a whitelist filter! */ function checkSvgScriptCallback( $element, $attribs ) { $stripped = $this->stripXmlNamespace( $element ); if( $stripped == 'script' ) { wfDebug( __METHOD__ . ": Found script element '$element' in uploaded file.\n" ); return true; } foreach( $attribs as $attrib => $value ) { $stripped = $this->stripXmlNamespace( $attrib ); if( substr( $stripped, 0, 2 ) == 'on' ) { wfDebug( __METHOD__ . ": Found script attribute '$attrib'='value' in uploaded file.\n" ); return true; } if( $stripped == 'href' && strpos( strtolower( $value ), 'javascript:' ) !== false ) { wfDebug( __METHOD__ . ": Found script href attribute '$attrib'='$value' in uploaded file.\n" ); return true; } } } private function stripXmlNamespace( $name ) { // 'http://www.w3.org/2000/svg:script' -> 'script' $parts = explode( ':', strtolower( $name ) ); return array_pop( $parts ); } /** * Generic wrapper function for a virus scanner program. * This relies on the $wgAntivirus and $wgAntivirusSetup variables. * $wgAntivirusRequired may be used to deny upload if the scan fails. * * @param string $file Pathname to the temporary upload file * @return mixed false if not virus is found, NULL if the scan fails or is disabled, * or a string containing feedback from the virus scanner if a virus was found. * If textual feedback is missing but a virus was found, this function returns true. */ function detectVirus($file) { global $wgAntivirus, $wgAntivirusSetup, $wgAntivirusRequired, $wgOut; if ( !$wgAntivirus ) { wfDebug( __METHOD__.": virus scanner disabled\n"); return NULL; } if ( !$wgAntivirusSetup[$wgAntivirus] ) { wfDebug( __METHOD__.": unknown virus scanner: $wgAntivirus\n" ); $wgOut->wrapWikiMsg( '
    $1
    ', array( 'virus-badscanner', $wgAntivirus ) ); return wfMsg('virus-unknownscanner') . " $wgAntivirus"; } # look up scanner configuration $command = $wgAntivirusSetup[$wgAntivirus]["command"]; $exitCodeMap = $wgAntivirusSetup[$wgAntivirus]["codemap"]; $msgPattern = isset( $wgAntivirusSetup[$wgAntivirus]["messagepattern"] ) ? $wgAntivirusSetup[$wgAntivirus]["messagepattern"] : null; if ( strpos( $command,"%f" ) === false ) { # simple pattern: append file to scan $command .= " " . wfEscapeShellArg( $file ); } else { # complex pattern: replace "%f" with file to scan $command = str_replace( "%f", wfEscapeShellArg( $file ), $command ); } wfDebug( __METHOD__.": running virus scan: $command \n" ); # execute virus scanner $exitCode = false; #NOTE: there's a 50 line workaround to make stderr redirection work on windows, too. # that does not seem to be worth the pain. # Ask me (Duesentrieb) about it if it's ever needed. $output = array(); if ( wfIsWindows() ) { exec( "$command", $output, $exitCode ); } else { exec( "$command 2>&1", $output, $exitCode ); } # map exit code to AV_xxx constants. $mappedCode = $exitCode; if ( $exitCodeMap ) { if ( isset( $exitCodeMap[$exitCode] ) ) { $mappedCode = $exitCodeMap[$exitCode]; } elseif ( isset( $exitCodeMap["*"] ) ) { $mappedCode = $exitCodeMap["*"]; } } if ( $mappedCode === AV_SCAN_FAILED ) { # scan failed (code was mapped to false by $exitCodeMap) wfDebug( __METHOD__.": failed to scan $file (code $exitCode).\n" ); if ( $wgAntivirusRequired ) { return wfMsg('virus-scanfailed', array( $exitCode ) ); } else { return NULL; } } else if ( $mappedCode === AV_SCAN_ABORTED ) { # scan failed because filetype is unknown (probably imune) wfDebug( __METHOD__.": unsupported file type $file (code $exitCode).\n" ); return NULL; } else if ( $mappedCode === AV_NO_VIRUS ) { # no virus found wfDebug( __METHOD__.": file passed virus scan.\n" ); return false; } else { $output = join( "\n", $output ); $output = trim( $output ); if ( !$output ) { $output = true; #if there's no output, return true } elseif ( $msgPattern ) { $groups = array(); if ( preg_match( $msgPattern, $output, $groups ) ) { if ( $groups[1] ) { $output = $groups[1]; } } } wfDebug( __METHOD__.": FOUND VIRUS! scanner feedback: $output \n" ); return $output; } } /** * Check if the temporary file is MacBinary-encoded, as some uploads * from Internet Explorer on Mac OS Classic and Mac OS X will be. * If so, the data fork will be extracted to a second temporary file, * which will then be checked for validity and either kept or discarded. * * @access private */ function checkMacBinary() { $macbin = new MacBinary( $this->mTempPath ); if( $macbin->isValid() ) { $dataFile = tempnam( wfTempDir(), "WikiMacBinary" ); $dataHandle = fopen( $dataFile, 'wb' ); wfDebug( "SpecialUpload::checkMacBinary: Extracting MacBinary data fork to $dataFile\n" ); $macbin->extractData( $dataHandle ); $this->mTempPath = $dataFile; $this->mFileSize = $macbin->dataForkLength(); // We'll have to manually remove the new file if it's not kept. $this->mRemoveTempFile = true; } $macbin->close(); } /** * If we've modified the upload file we need to manually remove it * on exit to clean up. * @access private */ function cleanupTempFile() { if ( $this->mRemoveTempFile && $this->mTempPath && file_exists( $this->mTempPath ) ) { wfDebug( "SpecialUpload::cleanupTempFile: Removing temporary file {$this->mTempPath}\n" ); unlink( $this->mTempPath ); } } /** * Check if there's an overwrite conflict and, if so, if restrictions * forbid this user from performing the upload. * * @return mixed true on success, WikiError on failure * @access private */ function checkOverwrite( $name ) { $img = wfFindFile( $name ); $error = ''; if( $img ) { global $wgUser, $wgOut; if( $img->isLocal() ) { if( !self::userCanReUpload( $wgUser, $img->name ) ) { $error = 'fileexists-forbidden'; } } else { if( !$wgUser->isAllowed( 'reupload' ) || !$wgUser->isAllowed( 'reupload-shared' ) ) { $error = "fileexists-shared-forbidden"; } } } if( $error ) { $errorText = wfMsg( $error, wfEscapeWikiText( $img->getName() ) ); return $errorText; } // Rockin', go ahead and upload return true; } /** * Check if a user is the last uploader * * @param User $user * @param string $img, image name * @return bool */ public static function userCanReUpload( User $user, $img ) { if( $user->isAllowed( 'reupload' ) ) return true; // non-conditional if( !$user->isAllowed( 'reupload-own' ) ) return false; $dbr = wfGetDB( DB_SLAVE ); $row = $dbr->selectRow('image', /* SELECT */ 'img_user', /* WHERE */ array( 'img_name' => $img ) ); if ( !$row ) return false; return $user->getId() == $row->img_user; } /** * Display an error with a wikitext description */ function showError( $description ) { global $wgOut; $wgOut->setPageTitle( wfMsg( "internalerror" ) ); $wgOut->setRobotPolicy( "noindex,nofollow" ); $wgOut->setArticleRelated( false ); $wgOut->enableClientCache( false ); $wgOut->addWikiText( $description ); } /** * Get the initial image page text based on a comment and optional file status information */ static function getInitialPageText( $comment, $license, $copyStatus, $source ) { global $wgUseCopyrightUpload; if ( $wgUseCopyrightUpload ) { if ( $license != '' ) { $licensetxt = '== ' . wfMsgForContent( 'license' ) . " ==\n" . '{{' . $license . '}}' . "\n"; } $pageText = '== ' . wfMsg ( 'filedesc' ) . " ==\n" . $comment . "\n" . '== ' . wfMsgForContent ( 'filestatus' ) . " ==\n" . $copyStatus . "\n" . "$licensetxt" . '== ' . wfMsgForContent ( 'filesource' ) . " ==\n" . $source ; } else { if ( $license != '' ) { $filedesc = $comment == '' ? '' : '== ' . wfMsg ( 'filedesc' ) . " ==\n" . $comment . "\n"; $pageText = $filedesc . '== ' . wfMsgForContent ( 'license' ) . " ==\n" . '{{' . $license . '}}' . "\n"; } else { $pageText = $comment; } } return $pageText; } /** * If there are rows in the deletion log for this file, show them, * along with a nice little note for the user * * @param OutputPage $out * @param string filename */ private function showDeletionLog( $out, $filename ) { global $wgUser; $loglist = new LogEventsList( $wgUser->getSkin(), $out ); $pager = new LogPager( $loglist, 'delete', false, $filename ); if( $pager->getNumRows() > 0 ) { $out->addHTML( '
    ' ); $out->addWikiMsg( 'upload-wasdeleted' ); $out->addHTML( $loglist->beginLogEventsList() . $pager->getBody() . $loglist->endLogEventsList() ); $out->addHTML( '
    ' ); } } }