1649 lines
52 KiB
PHP
1649 lines
52 KiB
PHP
<?php
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/**
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*
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* @addtogroup SpecialPage
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*/
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/**
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* Entry point
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*/
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function wfSpecialUpload() {
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global $wgRequest;
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$form = new UploadForm( $wgRequest );
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$form->execute();
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}
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/**
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* implements Special:Upload
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* @addtogroup SpecialPage
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*/
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class UploadForm {
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const SUCCESS = 0;
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const BEFORE_PROCESSING = 1;
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const LARGE_FILE_SERVER = 2;
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const EMPTY_FILE = 3;
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const MIN_LENGHT_PARTNAME = 4;
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const ILLEGAL_FILENAME = 5;
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const PROTECTED_PAGE = 6;
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const OVERWRITE_EXISTING_FILE = 7;
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const FILETYPE_MISSING = 8;
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const FILETYPE_BADTYPE = 9;
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const VERIFICATION_ERROR = 10;
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const UPLOAD_VERIFICATION_ERROR = 11;
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const UPLOAD_WARNING = 12;
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const INTERNAL_ERROR = 13;
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/**#@+
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* @access private
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*/
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var $mComment, $mLicense, $mIgnoreWarning, $mCurlError;
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var $mDestName, $mTempPath, $mFileSize, $mFileProps;
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var $mCopyrightStatus, $mCopyrightSource, $mReUpload, $mAction, $mUploadClicked;
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var $mSrcName, $mSessionKey, $mStashed, $mDesiredDestName, $mRemoveTempFile, $mSourceType;
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var $mDestWarningAck, $mCurlDestHandle;
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var $mLocalFile;
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# Placeholders for text injection by hooks (must be HTML)
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# extensions should take care to _append_ to the present value
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var $uploadFormTextTop;
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var $uploadFormTextAfterSummary;
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const SESSION_VERSION = 1;
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/**#@-*/
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/**
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* Constructor : initialise object
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* Get data POSTed through the form and assign them to the object
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* @param $request Data posted.
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*/
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function UploadForm( &$request ) {
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global $wgAllowCopyUploads;
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$this->mDesiredDestName = $request->getText( 'wpDestFile' );
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$this->mIgnoreWarning = $request->getCheck( 'wpIgnoreWarning' );
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$this->mComment = $request->getText( 'wpUploadDescription' );
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if( !$request->wasPosted() ) {
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# GET requests just give the main form; no data except destination
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# filename and description
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return;
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}
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# Placeholders for text injection by hooks (empty per default)
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$this->uploadFormTextTop = "";
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$this->uploadFormTextAfterSummary = "";
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$this->mReUpload = $request->getCheck( 'wpReUpload' );
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$this->mUploadClicked = $request->getCheck( 'wpUpload' );
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$this->mLicense = $request->getText( 'wpLicense' );
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$this->mCopyrightStatus = $request->getText( 'wpUploadCopyStatus' );
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$this->mCopyrightSource = $request->getText( 'wpUploadSource' );
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$this->mWatchthis = $request->getBool( 'wpWatchthis' );
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$this->mSourceType = $request->getText( 'wpSourceType' );
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$this->mDestWarningAck = $request->getText( 'wpDestFileWarningAck' );
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$this->mAction = $request->getVal( 'action' );
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$this->mSessionKey = $request->getInt( 'wpSessionKey' );
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if( !empty( $this->mSessionKey ) &&
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isset( $_SESSION['wsUploadData'][$this->mSessionKey]['version'] ) &&
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$_SESSION['wsUploadData'][$this->mSessionKey]['version'] == self::SESSION_VERSION ) {
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/**
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* Confirming a temporarily stashed upload.
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* We don't want path names to be forged, so we keep
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* them in the session on the server and just give
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* an opaque key to the user agent.
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*/
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$data = $_SESSION['wsUploadData'][$this->mSessionKey];
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$this->mTempPath = $data['mTempPath'];
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$this->mFileSize = $data['mFileSize'];
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$this->mSrcName = $data['mSrcName'];
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$this->mFileProps = $data['mFileProps'];
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$this->mCurlError = 0/*UPLOAD_ERR_OK*/;
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$this->mStashed = true;
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$this->mRemoveTempFile = false;
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} else {
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/**
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*Check for a newly uploaded file.
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*/
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if( $wgAllowCopyUploads && $this->mSourceType == 'web' ) {
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$this->initializeFromUrl( $request );
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} else {
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$this->initializeFromUpload( $request );
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}
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}
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}
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/**
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* Initialize the uploaded file from PHP data
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* @access private
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*/
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function initializeFromUpload( $request ) {
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$this->mTempPath = $request->getFileTempName( 'wpUploadFile' );
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$this->mFileSize = $request->getFileSize( 'wpUploadFile' );
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$this->mSrcName = $request->getFileName( 'wpUploadFile' );
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$this->mCurlError = $request->getUploadError( 'wpUploadFile' );
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$this->mSessionKey = false;
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$this->mStashed = false;
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$this->mRemoveTempFile = false; // PHP will handle this
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}
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/**
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* Copy a web file to a temporary file
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* @access private
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*/
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function initializeFromUrl( $request ) {
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global $wgTmpDirectory;
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$url = $request->getText( 'wpUploadFileURL' );
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$local_file = tempnam( $wgTmpDirectory, 'WEBUPLOAD' );
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$this->mTempPath = $local_file;
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$this->mFileSize = 0; # Will be set by curlCopy
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$this->mCurlError = $this->curlCopy( $url, $local_file );
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$pathParts = explode( '/', $url );
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$this->mSrcName = array_pop( $pathParts );
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$this->mSessionKey = false;
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$this->mStashed = false;
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// PHP won't auto-cleanup the file
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$this->mRemoveTempFile = file_exists( $local_file );
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}
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/**
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* Safe copy from URL
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* Returns true if there was an error, false otherwise
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*/
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private function curlCopy( $url, $dest ) {
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global $wgUser, $wgOut;
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if( !$wgUser->isAllowed( 'upload_by_url' ) ) {
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$wgOut->permissionRequired( 'upload_by_url' );
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return true;
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}
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# Maybe remove some pasting blanks :-)
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$url = trim( $url );
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if( stripos($url, 'http://') !== 0 && stripos($url, 'ftp://') !== 0 ) {
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# Only HTTP or FTP URLs
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$wgOut->errorPage( 'upload-proto-error', 'upload-proto-error-text' );
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return true;
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}
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# Open temporary file
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$this->mCurlDestHandle = @fopen( $this->mTempPath, "wb" );
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if( $this->mCurlDestHandle === false ) {
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# Could not open temporary file to write in
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$wgOut->errorPage( 'upload-file-error', 'upload-file-error-text');
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return true;
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}
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$ch = curl_init();
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curl_setopt( $ch, CURLOPT_HTTP_VERSION, 1.0); # Probably not needed, but apparently can work around some bug
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curl_setopt( $ch, CURLOPT_TIMEOUT, 10); # 10 seconds timeout
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curl_setopt( $ch, CURLOPT_LOW_SPEED_LIMIT, 512); # 0.5KB per second minimum transfer speed
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curl_setopt( $ch, CURLOPT_URL, $url);
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curl_setopt( $ch, CURLOPT_WRITEFUNCTION, array( $this, 'uploadCurlCallback' ) );
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curl_exec( $ch );
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$error = curl_errno( $ch ) ? true : false;
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$errornum = curl_errno( $ch );
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// if ( $error ) print curl_error ( $ch ) ; # Debugging output
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curl_close( $ch );
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fclose( $this->mCurlDestHandle );
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unset( $this->mCurlDestHandle );
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if( $error ) {
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unlink( $dest );
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if( wfEmptyMsg( "upload-curl-error$errornum", wfMsg("upload-curl-error$errornum") ) )
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$wgOut->errorPage( 'upload-misc-error', 'upload-misc-error-text' );
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else
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$wgOut->errorPage( "upload-curl-error$errornum", "upload-curl-error$errornum-text" );
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}
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return $error;
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}
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/**
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* Callback function for CURL-based web transfer
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* Write data to file unless we've passed the length limit;
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* if so, abort immediately.
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* @access private
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*/
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function uploadCurlCallback( $ch, $data ) {
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global $wgMaxUploadSize;
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$length = strlen( $data );
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$this->mFileSize += $length;
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if( $this->mFileSize > $wgMaxUploadSize ) {
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return 0;
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}
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fwrite( $this->mCurlDestHandle, $data );
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return $length;
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}
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/**
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* Start doing stuff
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* @access public
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*/
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function execute() {
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global $wgUser, $wgOut;
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global $wgEnableUploads;
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# Check uploading enabled
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if( !$wgEnableUploads ) {
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$wgOut->showErrorPage( 'uploaddisabled', 'uploaddisabledtext', array( $this->mDesiredDestName ) );
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return;
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}
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# Check permissions
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if( !$wgUser->isAllowed( 'upload' ) ) {
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if( !$wgUser->isLoggedIn() ) {
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$wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
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} else {
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$wgOut->permissionRequired( 'upload' );
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}
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return;
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}
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# Check blocks
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if( $wgUser->isBlocked() ) {
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$wgOut->blockedPage();
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return;
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}
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if( wfReadOnly() ) {
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$wgOut->readOnlyPage();
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return;
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}
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if( $this->mReUpload ) {
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if( !$this->unsaveUploadedFile() ) {
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return;
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}
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$this->mainUploadForm();
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} else if( 'submit' == $this->mAction || $this->mUploadClicked ) {
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$this->processUpload();
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} else {
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$this->mainUploadForm();
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}
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$this->cleanupTempFile();
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}
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/**
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* Do the upload
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* Checks are made in SpecialUpload::execute()
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*
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* @access private
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*/
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function processUpload(){
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global $wgUser, $wgOut, $wgFileExtensions;
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$details = null;
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$value = null;
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$value = $this->internalProcessUpload( $details );
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switch($value) {
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case self::SUCCESS:
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$wgOut->redirect( $this->mLocalFile->getTitle()->getFullURL() );
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break;
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case self::BEFORE_PROCESSING:
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break;
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case self::LARGE_FILE_SERVER:
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$this->mainUploadForm( wfMsgHtml( 'largefileserver' ) );
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break;
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case self::EMPTY_FILE:
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$this->mainUploadForm( wfMsgHtml( 'emptyfile' ) );
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break;
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case self::MIN_LENGHT_PARTNAME:
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$this->mainUploadForm( wfMsgHtml( 'minlength1' ) );
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break;
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case self::ILLEGAL_FILENAME:
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$filtered = $details['filtered'];
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$this->uploadError( wfMsgWikiHtml( 'illegalfilename', htmlspecialchars( $filtered ) ) );
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break;
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case self::PROTECTED_PAGE:
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$this->uploadError( wfMsgWikiHtml( 'protectedpage' ) );
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break;
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case self::OVERWRITE_EXISTING_FILE:
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$errorText = $details['overwrite'];
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$overwrite = new WikiError( $wgOut->parse( $errorText ) );
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$this->uploadError( $overwrite->toString() );
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break;
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case self::FILETYPE_MISSING:
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$this->uploadError( wfMsgExt( 'filetype-missing', array ( 'parseinline' ) ) );
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break;
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case self::FILETYPE_BADTYPE:
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$finalExt = $details['finalExt'];
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$this->uploadError(
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wfMsgExt( 'filetype-banned-type',
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array( 'parseinline' ),
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htmlspecialchars( $finalExt ),
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implode(
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wfMsgExt( 'comma-separator', array( 'escapenoentities' ) ),
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$wgFileExtensions
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)
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)
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);
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break;
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case self::VERIFICATION_ERROR:
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$veri = $details['veri'];
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$this->uploadError( $veri->toString() );
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break;
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case self::UPLOAD_VERIFICATION_ERROR:
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$error = $details['error'];
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$this->uploadError( $error );
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break;
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case self::UPLOAD_WARNING:
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$warning = $details['warning'];
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$this->uploadWarning( $warning );
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break;
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case self::INTERNAL_ERROR:
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$internal = $details['internal'];
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$this->showError( $internal );
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break;
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default:
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throw new MWException( __METHOD__ . ": Unknown value `{$value}`" );
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}
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}
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/**
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* Really do the upload
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* Checks are made in SpecialUpload::execute()
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*
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* @param array $resultDetails contains result-specific dict of additional values
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*
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* @access private
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*/
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function internalProcessUpload( &$resultDetails ) {
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global $wgUser;
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if( !wfRunHooks( 'UploadForm:BeforeProcessing', array( &$this ) ) )
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{
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wfDebug( "Hook 'UploadForm:BeforeProcessing' broke processing the file." );
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return self::BEFORE_PROCESSING;
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}
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/* Check for PHP error if any, requires php 4.2 or newer */
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if( $this->mCurlError == 1/*UPLOAD_ERR_INI_SIZE*/ ) {
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return self::LARGE_FILE_SERVER;
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}
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/**
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* If there was no filename or a zero size given, give up quick.
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*/
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if( trim( $this->mSrcName ) == '' || empty( $this->mFileSize ) ) {
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return self::EMPTY_FILE;
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}
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# Chop off any directories in the given filename
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if( $this->mDesiredDestName ) {
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$basename = $this->mDesiredDestName;
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} else {
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$basename = $this->mSrcName;
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}
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$filtered = wfBaseName( $basename );
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/**
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* We'll want to blacklist against *any* 'extension', and use
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* only the final one for the whitelist.
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*/
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list( $partname, $ext ) = $this->splitExtensions( $filtered );
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if( count( $ext ) ) {
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$finalExt = $ext[count( $ext ) - 1];
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} else {
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$finalExt = '';
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}
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# If there was more than one "extension", reassemble the base
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# filename to prevent bogus complaints about length
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if( count( $ext ) > 1 ) {
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for( $i = 0; $i < count( $ext ) - 1; $i++ )
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$partname .= '.' . $ext[$i];
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}
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if( strlen( $partname ) < 1 ) {
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return self::MIN_LENGHT_PARTNAME;
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}
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/**
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* Filter out illegal characters, and try to make a legible name
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* out of it. We'll strip some silently that Title would die on.
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*/
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$filtered = preg_replace ( "/[^".Title::legalChars()."]|:/", '-', $filtered );
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$nt = Title::makeTitleSafe( NS_IMAGE, $filtered );
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if( is_null( $nt ) ) {
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$resultDetails = array( 'filtered' => $filtered );
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return self::ILLEGAL_FILENAME;
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}
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$this->mLocalFile = wfLocalFile( $nt );
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$this->mDestName = $this->mLocalFile->getName();
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/**
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* If the image is protected, non-sysop users won't be able
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* to modify it by uploading a new revision.
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*/
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if( !$nt->userCan( 'edit' ) || !$nt->userCan( 'create' ) ) {
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return self::PROTECTED_PAGE;
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}
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/**
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* In some cases we may forbid overwriting of existing files.
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*/
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$overwrite = $this->checkOverwrite( $this->mDestName );
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if( $overwrite !== true ) {
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$resultDetails = array( 'overwrite' => $overwrite );
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return self::OVERWRITE_EXISTING_FILE;
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}
|
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|
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/* Don't allow users to override the blacklist (check file extension) */
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global $wgStrictFileExtensions;
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global $wgFileExtensions, $wgFileBlacklist;
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if ($finalExt == '') {
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return self::FILETYPE_MISSING;
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} elseif ( $this->checkFileExtensionList( $ext, $wgFileBlacklist ) ||
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($wgStrictFileExtensions && !$this->checkFileExtension( $finalExt, $wgFileExtensions ) ) ) {
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$resultDetails = array( 'finalExt' => $finalExt );
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return self::FILETYPE_BADTYPE;
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}
|
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|
|
/**
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* Look at the contents of the file; if we can recognize the
|
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* type but it's corrupt or data of the wrong type, we should
|
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* probably not accept it.
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*/
|
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if( !$this->mStashed ) {
|
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$this->mFileProps = File::getPropsFromPath( $this->mTempPath, $finalExt );
|
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$this->checkMacBinary();
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$veri = $this->verify( $this->mTempPath, $finalExt );
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if( $veri !== true ) { //it's a wiki error...
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$resultDetails = array( 'veri' => $veri );
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return self::VERIFICATION_ERROR;
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}
|
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|
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/**
|
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* Provide an opportunity for extensions to add further checks
|
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*/
|
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$error = '';
|
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if( !wfRunHooks( 'UploadVerification',
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array( $this->mDestName, $this->mTempPath, &$error ) ) ) {
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$resultDetails = array( 'error' => $error );
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return self::UPLOAD_VERIFICATION_ERROR;
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}
|
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}
|
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|
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|
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/**
|
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* Check for non-fatal conditions
|
|
*/
|
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if ( ! $this->mIgnoreWarning ) {
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$warning = '';
|
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|
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global $wgCapitalLinks;
|
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if( $wgCapitalLinks ) {
|
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$filtered = ucfirst( $filtered );
|
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}
|
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if( $basename != $filtered ) {
|
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$warning .= '<li>'.wfMsgHtml( 'badfilename', htmlspecialchars( $this->mDestName ) ).'</li>';
|
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}
|
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|
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global $wgCheckFileExtensions;
|
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if ( $wgCheckFileExtensions ) {
|
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if ( !$this->checkFileExtension( $finalExt, $wgFileExtensions ) ) {
|
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$warning .= '<li>' .
|
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wfMsgExt( 'filetype-unwanted-type',
|
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array( 'parseinline' ),
|
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htmlspecialchars( $finalExt ),
|
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implode(
|
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wfMsgExt( 'comma-separator', array( 'escapenoentities' ) ),
|
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$wgFileExtensions
|
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)
|
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) . '</li>';
|
|
}
|
|
}
|
|
|
|
global $wgUploadSizeWarning;
|
|
if ( $wgUploadSizeWarning && ( $this->mFileSize > $wgUploadSizeWarning ) ) {
|
|
$skin = $wgUser->getSkin();
|
|
$wsize = $skin->formatSize( $wgUploadSizeWarning );
|
|
$asize = $skin->formatSize( $this->mFileSize );
|
|
$warning .= '<li>' . wfMsgHtml( 'large-file', $wsize, $asize ) . '</li>';
|
|
}
|
|
if ( $this->mFileSize == 0 ) {
|
|
$warning .= '<li>'.wfMsgHtml( 'emptyfile' ).'</li>';
|
|
}
|
|
|
|
if ( !$this->mDestWarningAck ) {
|
|
$warning .= self::getExistsWarning( $this->mLocalFile );
|
|
}
|
|
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.
|
|
*/
|
|
$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::newFromText( $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 = '<div style="float:' . $align . '" id="mw-media-icon">' .
|
|
$icon->toHtml( array( 'desc-link' => true ) ) . '<br />' . $dlink . '</div>';
|
|
} else {
|
|
$dlink2 = '';
|
|
}
|
|
|
|
$warning .= '<li>' . wfMsgExt( 'fileexists', array('parseinline','replaceafter'), $dlink ) . '</li>' . $dlink2;
|
|
|
|
} elseif( $file->getTitle()->getArticleID() ) {
|
|
$lnk = $sk->makeKnownLinkObj( $file->getTitle(), '', 'redirect=no' );
|
|
$warning .= '<li>' . wfMsgExt( 'filepageexists', array( 'parseinline', 'replaceafter' ), $lnk ) . '</li>';
|
|
} 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 = '<div style="float:' . $align . '" id="mw-media-icon">' .
|
|
$icon->toHtml( array( 'desc-link' => true ) ) . '<br />' . $dlink . '</div>';
|
|
} else {
|
|
$dlink2 = '';
|
|
}
|
|
|
|
$warning .= '<li>' . wfMsgExt( 'fileexists-extension', 'parsemag', $file->getName(), $dlink ) . '</li>' . $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 = '<div style="float:' . $align . '" id="mw-media-icon">' .
|
|
$icon->toHtml( array( 'desc-link' => true ) ) . '<br />' .
|
|
$dlink . '</div>';
|
|
} else {
|
|
$dlink2 = '';
|
|
}
|
|
|
|
$warning .= '<li>' . wfMsgExt( 'fileexists-thumbnail-yes', 'parsemag', $dlink ) .
|
|
'</li>' . $dlink2;
|
|
} else {
|
|
# Image w/o '180px-' does not exists, but we do not like these filenames
|
|
$warning .= '<li>' . wfMsgExt( 'file-thumbnail-no', 'parseinline' ,
|
|
substr( $partname , 0, strpos( $partname , '-' ) +1 ) ) . '</li>';
|
|
}
|
|
}
|
|
|
|
$filenamePrefixBlacklist = self::getFilenamePrefixBlacklist();
|
|
# Do the match
|
|
foreach( $filenamePrefixBlacklist as $prefix ) {
|
|
if ( substr( $partname, 0, strlen( $prefix ) ) == $prefix ) {
|
|
$warning .= '<li>' . wfMsgExt( 'filename-bad-prefix', 'parseinline', $prefix ) . '</li>';
|
|
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 .= '<li>' . wfMsgWikiHtml( 'filewasdeleted', $llink ) . '</li>';
|
|
}
|
|
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 !== '' ) {
|
|
$s = "<ul>$warning</ul>";
|
|
}
|
|
}
|
|
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_IMAGE, '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();
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
$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( "<h2>" . wfMsgHtml( 'uploadwarning' ) . "</h2>\n" );
|
|
$wgOut->addHTML( "<span class='error'>{$error}</span>\n" );
|
|
}
|
|
|
|
/**
|
|
* 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, $wgContLang;
|
|
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( "<h2>" . wfMsgHtml( 'uploadwarning' ) . "</h2>\n" );
|
|
$wgOut->addHTML( "<ul class='warning'>{$warning}</ul><br />\n" );
|
|
|
|
$save = wfMsgHtml( 'savefile' );
|
|
$reupload = wfMsgHtml( 'reupload' );
|
|
$iw = wfMsgWikiHtml( 'ignorewarning' );
|
|
$reup = wfMsgWikiHtml( 'reuploaddesc' );
|
|
$titleObj = SpecialPage::getTitleFor( 'Upload' );
|
|
$action = $titleObj->escapeLocalURL( 'action=submit' );
|
|
$align1 = $wgContLang->isRTL() ? 'left' : 'right';
|
|
$align2 = $wgContLang->isRTL() ? 'right' : 'left';
|
|
|
|
if ( $wgUseCopyrightUpload )
|
|
{
|
|
$copyright = "
|
|
<input type='hidden' name='wpUploadCopyStatus' value=\"" . htmlspecialchars( $this->mCopyrightStatus ) . "\" />
|
|
<input type='hidden' name='wpUploadSource' value=\"" . htmlspecialchars( $this->mCopyrightSource ) . "\" />
|
|
";
|
|
} else {
|
|
$copyright = "";
|
|
}
|
|
|
|
$wgOut->addHTML( "
|
|
<form id='uploadwarning' method='post' enctype='multipart/form-data' action='$action'>
|
|
<input type='hidden' name='wpIgnoreWarning' value='1' />
|
|
<input type='hidden' name='wpSessionKey' value=\"" . htmlspecialchars( $this->mSessionKey ) . "\" />
|
|
<input type='hidden' name='wpUploadDescription' value=\"" . htmlspecialchars( $this->mComment ) . "\" />
|
|
<input type='hidden' name='wpLicense' value=\"" . htmlspecialchars( $this->mLicense ) . "\" />
|
|
<input type='hidden' name='wpDestFile' value=\"" . htmlspecialchars( $this->mDesiredDestName ) . "\" />
|
|
<input type='hidden' name='wpWatchthis' value=\"" . htmlspecialchars( intval( $this->mWatchthis ) ) . "\" />
|
|
{$copyright}
|
|
<table border='0'>
|
|
<tr>
|
|
<tr>
|
|
<td align='$align1'>
|
|
<input tabindex='2' type='submit' name='wpUpload' value=\"$save\" />
|
|
</td>
|
|
<td align='$align2'>$iw</td>
|
|
</tr>
|
|
<tr>
|
|
<td align='$align1'>
|
|
<input tabindex='2' type='submit' name='wpReUpload' value=\"{$reupload}\" />
|
|
</td>
|
|
<td align='$align2'>$reup</td>
|
|
</tr>
|
|
</tr>
|
|
</table></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, $wgContLang;
|
|
global $wgUseCopyrightUpload, $wgUseAjax, $wgAjaxUploadDestCheck, $wgAjaxLicensePreview;
|
|
global $wgRequest, $wgAllowCopyUploads;
|
|
global $wgStylePath, $wgStyleVersion;
|
|
|
|
$useAjaxDestCheck = $wgUseAjax && $wgAjaxUploadDestCheck;
|
|
$useAjaxLicensePreview = $wgUseAjax && $wgAjaxLicensePreview;
|
|
|
|
$adc = wfBoolToStr( $useAjaxDestCheck );
|
|
$alp = wfBoolToStr( $useAjaxLicensePreview );
|
|
|
|
$wgOut->addScript( "<script type=\"text/javascript\">
|
|
wgAjaxUploadDestCheck = {$adc};
|
|
wgAjaxLicensePreview = {$alp};
|
|
</script>
|
|
<script type=\"text/javascript\" src=\"{$wgStylePath}/common/upload.js?{$wgStyleVersion}\"></script>
|
|
" );
|
|
|
|
if( !wfRunHooks( 'UploadForm:initial', array( &$this ) ) )
|
|
{
|
|
wfDebug( "Hook 'UploadForm:initial' broke output of the upload form" );
|
|
return false;
|
|
}
|
|
|
|
if( $this->mDesiredDestName ) {
|
|
$title = Title::makeTitleSafe( NS_IMAGE, $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 )
|
|
)
|
|
);
|
|
$wgOut->addHtml( "<div id=\"contentSub2\">{$link}</div>" );
|
|
}
|
|
|
|
// Show the relevant lines from deletion log (for still deleted files only)
|
|
if( $title instanceof Title && $title->isDeleted() > 0 && !$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' );
|
|
$wgOut->addHTML( "<h2>{$sub}</h2>\n" .
|
|
"<span class='error'>{$msg}</span>\n" );
|
|
}
|
|
$wgOut->addHTML( '<div id="uploadtext">' );
|
|
$wgOut->addWikiMsg( 'uploadtext', $this->mDesiredDestName );
|
|
$wgOut->addHTML( "</div>\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;
|
|
if( $wgCheckFileExtensions ) {
|
|
$delim = wfMsgExt( 'comma-separator', array( 'escapenoentities' ) );
|
|
if( $wgStrictFileExtensions ) {
|
|
# Everything not permitted is banned
|
|
$wgOut->addHTML(
|
|
'<div id="mw-upload-permitted">' .
|
|
wfMsgWikiHtml( 'upload-permitted', implode( $wgFileExtensions, $delim ) ) .
|
|
"</div>\n"
|
|
);
|
|
} else {
|
|
# We have to list both preferred and prohibited
|
|
$wgOut->addHTML(
|
|
'<div id="mw-upload-preferred">' .
|
|
wfMsgWikiHtml( 'upload-preferred', implode( $wgFileExtensions, $delim ) ) .
|
|
"</div>\n" .
|
|
'<div id="mw-upload-prohibited">' .
|
|
wfMsgWikiHtml( 'upload-prohibited', implode( $wgFileBlacklist, $delim ) ) .
|
|
"</div>\n"
|
|
);
|
|
}
|
|
}
|
|
|
|
$sourcefilename = wfMsgHtml( 'sourcefilename' );
|
|
$destfilename = wfMsgHtml( 'destfilename' );
|
|
$summary = wfMsgExt( 'fileuploadsummary', 'parseinline' );
|
|
|
|
$licenses = new Licenses();
|
|
$license = wfMsgExt( 'license', array( 'parseinline' ) );
|
|
$nolicense = wfMsgHtml( 'nolicense' );
|
|
$licenseshtml = $licenses->getHtml();
|
|
|
|
$ulb = wfMsgHtml( 'uploadbtn' );
|
|
|
|
|
|
$titleObj = SpecialPage::getTitleFor( 'Upload' );
|
|
$action = $titleObj->escapeLocalURL();
|
|
|
|
$encDestName = htmlspecialchars( $this->mDesiredDestName );
|
|
|
|
$watchChecked =
|
|
( $wgUser->getOption( 'watchdefault' ) ||
|
|
( $wgUser->getOption( 'watchcreations' ) && $this->mDesiredDestName == '' ) )
|
|
? 'checked="checked"'
|
|
: '';
|
|
$warningChecked = $this->mIgnoreWarning ? 'checked' : '';
|
|
|
|
// Prepare form for upload or upload/copy
|
|
if( $wgAllowCopyUploads && $wgUser->isAllowed( 'upload_by_url' ) ) {
|
|
$filename_form =
|
|
"<input type='radio' id='wpSourceTypeFile' name='wpSourceType' value='file' " .
|
|
"onchange='toggle_element_activation(\"wpUploadFileURL\",\"wpUploadFile\")' checked />" .
|
|
"<input tabindex='1' type='file' name='wpUploadFile' id='wpUploadFile' " .
|
|
"onfocus='" .
|
|
"toggle_element_activation(\"wpUploadFileURL\",\"wpUploadFile\");" .
|
|
"toggle_element_check(\"wpSourceTypeFile\",\"wpSourceTypeURL\")'" .
|
|
($this->mDesiredDestName?"":"onchange='fillDestFilename(\"wpUploadFile\")' ") . "size='60' />" .
|
|
wfMsgHTML( 'upload_source_file' ) . "<br/>" .
|
|
"<input type='radio' id='wpSourceTypeURL' name='wpSourceType' value='web' " .
|
|
"onchange='toggle_element_activation(\"wpUploadFile\",\"wpUploadFileURL\")' />" .
|
|
"<input tabindex='1' type='text' name='wpUploadFileURL' id='wpUploadFileURL' " .
|
|
"onfocus='" .
|
|
"toggle_element_activation(\"wpUploadFile\",\"wpUploadFileURL\");" .
|
|
"toggle_element_check(\"wpSourceTypeURL\",\"wpSourceTypeFile\")'" .
|
|
($this->mDesiredDestName?"":"onchange='fillDestFilename(\"wpUploadFileURL\")' ") . "size='60' DISABLED />" .
|
|
wfMsgHtml( 'upload_source_url' ) ;
|
|
} else {
|
|
$filename_form =
|
|
"<input tabindex='1' type='file' name='wpUploadFile' id='wpUploadFile' " .
|
|
($this->mDesiredDestName?"":"onchange='fillDestFilename(\"wpUploadFile\")' ") .
|
|
"size='60' />" .
|
|
"<input type='hidden' name='wpSourceType' value='file' />" ;
|
|
}
|
|
if ( $useAjaxDestCheck ) {
|
|
$warningRow = "<tr><td colspan='2' id='wpDestFile-warning'> </td></tr>";
|
|
$destOnkeyup = 'onkeyup="wgUploadWarningObj.keypress();"';
|
|
} else {
|
|
$warningRow = '';
|
|
$destOnkeyup = '';
|
|
}
|
|
|
|
$encComment = htmlspecialchars( $this->mComment );
|
|
$align1 = $wgContLang->isRTL() ? 'left' : 'right';
|
|
$align2 = $wgContLang->isRTL() ? 'right' : 'left';
|
|
|
|
$wgOut->addHTML( <<<EOT
|
|
<form id='upload' method='post' enctype='multipart/form-data' action="$action">
|
|
<table border='0'>
|
|
<tr>
|
|
{$this->uploadFormTextTop}
|
|
<td align='$align1' valign='top'><label for='wpUploadFile'>{$sourcefilename}:</label></td>
|
|
<td align='$align2'>
|
|
{$filename_form}
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td align='$align1'><label for='wpDestFile'>{$destfilename}:</label></td>
|
|
<td align='$align2'>
|
|
<input tabindex='2' type='text' name='wpDestFile' id='wpDestFile' size='60'
|
|
value="$encDestName" $destOnkeyup />
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
<td align='$align1'><label for='wpUploadDescription'>{$summary}</label></td>
|
|
<td align='$align2'>
|
|
<textarea tabindex='3' name='wpUploadDescription' id='wpUploadDescription' rows='6'
|
|
cols='{$cols}'{$width}>$encComment</textarea>
|
|
{$this->uploadFormTextAfterSummary}
|
|
</td>
|
|
</tr>
|
|
<tr>
|
|
EOT
|
|
);
|
|
|
|
if ( $licenseshtml != '' ) {
|
|
global $wgStylePath;
|
|
$wgOut->addHTML( "
|
|
<td align='$align1'><label for='wpLicense'>$license:</label></td>
|
|
<td align='$align2'>
|
|
<select name='wpLicense' id='wpLicense' tabindex='4'
|
|
onchange='licenseSelectorCheck()'>
|
|
<option value=''>$nolicense</option>
|
|
$licenseshtml
|
|
</select>
|
|
</td>
|
|
</tr>
|
|
<tr>" );
|
|
if( $useAjaxLicensePreview ) {
|
|
$wgOut->addHtml( "
|
|
<td></td>
|
|
<td id=\"mw-license-preview\"></td>
|
|
</tr>
|
|
<tr>" );
|
|
}
|
|
}
|
|
|
|
if ( $wgUseCopyrightUpload ) {
|
|
$filestatus = wfMsgHtml ( 'filestatus' );
|
|
$copystatus = htmlspecialchars( $this->mCopyrightStatus );
|
|
$filesource = wfMsgHtml ( 'filesource' );
|
|
$uploadsource = htmlspecialchars( $this->mCopyrightSource );
|
|
|
|
$wgOut->addHTML( "
|
|
<td align='$align1' nowrap='nowrap'><label for='wpUploadCopyStatus'>$filestatus:</label></td>
|
|
<td><input tabindex='5' type='text' name='wpUploadCopyStatus' id='wpUploadCopyStatus'
|
|
value=\"$copystatus\" size='60' /></td>
|
|
</tr>
|
|
<tr>
|
|
<td align='$align1'><label for='wpUploadCopyStatus'>$filesource:</label></td>
|
|
<td><input tabindex='6' type='text' name='wpUploadSource' id='wpUploadCopyStatus'
|
|
value=\"$uploadsource\" size='60' /></td>
|
|
</tr>
|
|
<tr>
|
|
");
|
|
}
|
|
|
|
$wgOut->addHtml( "
|
|
<td></td>
|
|
<td>
|
|
<input tabindex='7' type='checkbox' name='wpWatchthis' id='wpWatchthis' $watchChecked value='true' />
|
|
<label for='wpWatchthis'>" . wfMsgHtml( 'watchthisupload' ) . "</label>
|
|
<input tabindex='8' type='checkbox' name='wpIgnoreWarning' id='wpIgnoreWarning' value='true' $warningChecked/>
|
|
<label for='wpIgnoreWarning'>" . wfMsgHtml( 'ignorewarnings' ) . "</label>
|
|
</td>
|
|
</tr>
|
|
$warningRow
|
|
<tr>
|
|
<td></td>
|
|
<td align='$align2'><input tabindex='9' type='submit' name='wpUpload' value=\"{$ulb}\"" . $wgUser->getSkin()->tooltipAndAccesskey( 'upload' ) . " /></td>
|
|
</tr>
|
|
<tr>
|
|
<td></td>
|
|
<td align='$align2'>
|
|
" );
|
|
$wgOut->addWikiText( wfMsgForContent( 'edittools' ) );
|
|
$wgOut->addHTML( "
|
|
</td>
|
|
</tr>
|
|
|
|
</table>
|
|
<input type='hidden' name='wpDestFileWarningAck' id='wpDestFileWarningAck' value=''/>
|
|
</form>" );
|
|
}
|
|
|
|
/* -------------------------------------------------------------- */
|
|
|
|
/**
|
|
* 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
|
|
*/
|
|
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
|
|
*/
|
|
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( !$this->verifyExtension( $mime, $extension ) ) {
|
|
return new WikiErrorMsg( 'uploadcorrupt' );
|
|
}
|
|
|
|
#check mime type blacklist
|
|
global $wgMimeTypeBlacklist;
|
|
if( isset($wgMimeTypeBlacklist) && !is_null($wgMimeTypeBlacklist)
|
|
&& $this->checkFileExtension( $mime, $wgMimeTypeBlacklist ) ) {
|
|
return new WikiErrorMsg( 'filetype-badmime', htmlspecialchars( $mime ) );
|
|
}
|
|
}
|
|
|
|
#check for htmlish code and javascript
|
|
if( $this->detectScript ( $tmpfile, $mime, $extension ) ) {
|
|
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
|
|
*/
|
|
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("<!DOCTYPE *X?HTML",$chunk)) return true;
|
|
|
|
/**
|
|
* Internet Explorer for Windows performs some really stupid file type
|
|
* autodetection which can cause it to interpret valid image files as HTML
|
|
* and potentially execute JavaScript, creating a cross-site scripting
|
|
* attack vectors.
|
|
*
|
|
* Apple's Safari browser also performs some unsafe file type autodetection
|
|
* which can cause legitimate files to be interpreted as HTML if the
|
|
* web server is not correctly configured to send the right content-type
|
|
* (or if you're really uploading plain text and octet streams!)
|
|
*
|
|
* Returns true if IE is likely to mistake the given file for HTML.
|
|
* Also returns true if Safari would mistake the given file for HTML
|
|
* when served with a generic content-type.
|
|
*/
|
|
|
|
$tags = array(
|
|
'<body',
|
|
'<head',
|
|
'<html', #also in safari
|
|
'<img',
|
|
'<pre',
|
|
'<script', #also in safari
|
|
'<table'
|
|
);
|
|
if( ! $wgAllowTitlesInSVG && $extension !== 'svg' && $mime !== 'image/svg' ) {
|
|
$tags[] = '<title';
|
|
}
|
|
|
|
foreach( $tags as $tag ) {
|
|
if( false !== strpos( $chunk, $tag ) ) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* look for javascript
|
|
*/
|
|
|
|
#resolve entity-refs to look at attributes. may be harsh on big files... cache result?
|
|
$chunk = Sanitizer::decodeCharReferences( $chunk );
|
|
|
|
#look for script-types
|
|
if (preg_match('!type\s*=\s*[\'"]?\s*(?:\w*/)?(?:ecma|java)!sim',$chunk)) return true;
|
|
|
|
#look for html-style script-urls
|
|
if (preg_match('!(?:href|src|data)\s*=\s*[\'"]?\s*(?:ecma|java)script:!sim',$chunk)) return true;
|
|
|
|
#look for css-style script-urls
|
|
if (preg_match('!url\s*\(\s*[\'"]?\s*(?:ecma|java)script:!sim',$chunk)) return true;
|
|
|
|
wfDebug("SpecialUpload::detectScript: no scripts found\n");
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* 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" );
|
|
# @TODO: localise
|
|
$wgOut->addHTML( "<div class='error'>Bad configuration: unknown virus scanner: <i>$wgAntivirus</i></div>\n" );
|
|
return "unknown antivirus: $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 "scan failed (code $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" );
|
|
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 && 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 ) {
|
|
$reader = new LogReader(
|
|
new FauxRequest(
|
|
array(
|
|
'page' => $filename,
|
|
'type' => 'delete',
|
|
)
|
|
)
|
|
);
|
|
if( $reader->hasRows() ) {
|
|
$out->addHtml( '<div id="mw-upload-deleted-warn">' );
|
|
$out->addWikiMsg( 'upload-wasdeleted' );
|
|
$viewer = new LogViewer( $reader );
|
|
$viewer->showList( $out );
|
|
$out->addHtml( '</div>' );
|
|
}
|
|
}
|
|
}
|