4 * @addtogroup SpecialPage
11 function wfSpecialUpload() {
13 $form = new UploadForm( $wgRequest );
18 * implements Special:Upload
19 * @addtogroup SpecialPage
25 var $mComment, $mLicense, $mIgnoreWarning, $mCurlError;
26 var $mDestName, $mTempPath, $mFileSize, $mFileProps;
27 var $mCopyrightStatus, $mCopyrightSource, $mReUpload, $mAction, $mUploadClicked;
28 var $mSrcName, $mSessionKey, $mStashed, $mDesiredDestName, $mRemoveTempFile, $mSourceType;
32 # Placeholders for text injection by hooks (must be HTML)
33 # extensions should take care to _append_ to the present value
34 var $uploadFormTextTop;
35 var $uploadFormTextAfterSummary;
37 const SESSION_VERSION
= 1;
41 * Constructor : initialise object
42 * Get data POSTed through the form and assign them to the object
43 * @param $request Data posted.
45 function UploadForm( &$request ) {
46 global $wgAllowCopyUploads;
47 $this->mDesiredDestName
= $request->getText( 'wpDestFile' );
49 if( !$request->wasPosted() ) {
50 # GET requests just give the main form; no data except wpDestfile.
54 # Placeholders for text injection by hooks (empty per default)
55 $this->uploadFormTextTop
= "";
56 $this->uploadFormTextAfterSummary
= "";
58 $this->mIgnoreWarning
= $request->getCheck( 'wpIgnoreWarning' );
59 $this->mReUpload
= $request->getCheck( 'wpReUpload' );
60 $this->mUploadClicked
= $request->getCheck( 'wpUpload' );
62 $this->mComment
= $request->getText( 'wpUploadDescription' );
63 $this->mLicense
= $request->getText( 'wpLicense' );
64 $this->mCopyrightStatus
= $request->getText( 'wpUploadCopyStatus' );
65 $this->mCopyrightSource
= $request->getText( 'wpUploadSource' );
66 $this->mWatchthis
= $request->getBool( 'wpWatchthis' );
67 $this->mSourceType
= $request->getText( 'wpSourceType' );
68 wfDebug( "UploadForm: watchthis is: '$this->mWatchthis'\n" );
70 $this->mAction
= $request->getVal( 'action' );
72 $this->mSessionKey
= $request->getInt( 'wpSessionKey' );
73 if( !empty( $this->mSessionKey
) &&
74 isset( $_SESSION['wsUploadData'][$this->mSessionKey
]['version'] ) &&
75 $_SESSION['wsUploadData'][$this->mSessionKey
]['version'] == self
::SESSION_VERSION
) {
77 * Confirming a temporarily stashed upload.
78 * We don't want path names to be forged, so we keep
79 * them in the session on the server and just give
80 * an opaque key to the user agent.
82 $data = $_SESSION['wsUploadData'][$this->mSessionKey
];
83 $this->mTempPath
= $data['mTempPath'];
84 $this->mFileSize
= $data['mFileSize'];
85 $this->mSrcName
= $data['mSrcName'];
86 $this->mFileProps
= $data['mFileProps'];
87 $this->mCurlError
= 0/*UPLOAD_ERR_OK*/;
88 $this->mStashed
= true;
89 $this->mRemoveTempFile
= false;
92 *Check for a newly uploaded file.
94 if( $wgAllowCopyUploads && $this->mSourceType
== 'web' ) {
95 $this->initializeFromUrl( $request );
97 $this->initializeFromUpload( $request );
103 * Initialize the uploaded file from PHP data
106 function initializeFromUpload( $request ) {
107 $this->mTempPath
= $request->getFileTempName( 'wpUploadFile' );
108 $this->mFileSize
= $request->getFileSize( 'wpUploadFile' );
109 $this->mSrcName
= $request->getFileName( 'wpUploadFile' );
110 $this->mCurlError
= $request->getUploadError( 'wpUploadFile' );
111 $this->mSessionKey
= false;
112 $this->mStashed
= false;
113 $this->mRemoveTempFile
= false; // PHP will handle this
117 * Copy a web file to a temporary file
120 function initializeFromUrl( $request ) {
121 global $wgTmpDirectory;
122 $url = $request->getText( 'wpUploadFileURL' );
123 $local_file = tempnam( $wgTmpDirectory, 'WEBUPLOAD' );
125 $this->mTempPath
= $local_file;
126 $this->mFileSize
= 0; # Will be set by curlCopy
127 $this->mCurlError
= $this->curlCopy( $url, $local_file );
128 $this->mSrcName
= array_pop( explode( '/', $url ) );
129 $this->mSessionKey
= false;
130 $this->mStashed
= false;
132 // PHP won't auto-cleanup the file
133 $this->mRemoveTempFile
= file_exists( $local_file );
138 * Returns true if there was an error, false otherwise
140 private function curlCopy( $url, $dest ) {
141 global $wgUser, $wgOut;
143 if( !$wgUser->isAllowed( 'upload_by_url' ) ) {
144 $wgOut->permissionRequired( 'upload_by_url' );
148 # Maybe remove some pasting blanks :-)
150 if( stripos($url, 'http://') !== 0 && stripos($url, 'ftp://') !== 0 ) {
151 # Only HTTP or FTP URLs
152 $wgOut->errorPage( 'upload-proto-error', 'upload-proto-error-text' );
156 # Open temporary file
157 $this->mCurlDestHandle
= @fopen
( $this->mTempPath
, "wb" );
158 if( $this->mCurlDestHandle
=== false ) {
159 # Could not open temporary file to write in
160 $wgOut->errorPage( 'upload-file-error', 'upload-file-error-text');
165 curl_setopt( $ch, CURLOPT_HTTP_VERSION
, 1.0); # Probably not needed, but apparently can work around some bug
166 curl_setopt( $ch, CURLOPT_TIMEOUT
, 10); # 10 seconds timeout
167 curl_setopt( $ch, CURLOPT_LOW_SPEED_LIMIT
, 512); # 0.5KB per second minimum transfer speed
168 curl_setopt( $ch, CURLOPT_URL
, $url);
169 curl_setopt( $ch, CURLOPT_WRITEFUNCTION
, array( $this, 'uploadCurlCallback' ) );
171 $error = curl_errno( $ch ) ?
true : false;
172 $errornum = curl_errno( $ch );
173 // if ( $error ) print curl_error ( $ch ) ; # Debugging output
176 fclose( $this->mCurlDestHandle
);
177 unset( $this->mCurlDestHandle
);
180 if( wfEmptyMsg( "upload-curl-error$errornum", wfMsg("upload-curl-error$errornum") ) )
181 $wgOut->errorPage( 'upload-misc-error', 'upload-misc-error-text' );
183 $wgOut->errorPage( "upload-curl-error$errornum", "upload-curl-error$errornum-text" );
190 * Callback function for CURL-based web transfer
191 * Write data to file unless we've passed the length limit;
192 * if so, abort immediately.
195 function uploadCurlCallback( $ch, $data ) {
196 global $wgMaxUploadSize;
197 $length = strlen( $data );
198 $this->mFileSize +
= $length;
199 if( $this->mFileSize
> $wgMaxUploadSize ) {
202 fwrite( $this->mCurlDestHandle
, $data );
211 global $wgUser, $wgOut;
212 global $wgEnableUploads;
214 # Check uploading enabled
215 if( !$wgEnableUploads ) {
216 $wgOut->showErrorPage( 'uploaddisabled', 'uploaddisabledtext', array( $this->mDesiredDestName
) );
221 if( !$wgUser->isAllowed( 'upload' ) ) {
222 if( !$wgUser->isLoggedIn() ) {
223 $wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
225 $wgOut->permissionRequired( 'upload' );
231 if( $wgUser->isBlocked() ) {
232 $wgOut->blockedPage();
237 $wgOut->readOnlyPage();
241 if( $this->mReUpload
) {
242 if( !$this->unsaveUploadedFile() ) {
245 $this->mainUploadForm();
246 } else if( 'submit' == $this->mAction ||
$this->mUploadClicked
) {
247 $this->processUpload();
249 $this->mainUploadForm();
252 $this->cleanupTempFile();
255 /* -------------------------------------------------------------- */
258 * Really do the upload
259 * Checks are made in SpecialUpload::execute()
262 function processUpload() {
263 global $wgUser, $wgOut;
265 if( !wfRunHooks( 'UploadForm:BeforeProcessing', array( &$this ) ) )
267 wfDebug( "Hook 'UploadForm:BeforeProcessing' broke processing the file." );
271 /* Check for PHP error if any, requires php 4.2 or newer */
272 if( $this->mCurlError
== 1/*UPLOAD_ERR_INI_SIZE*/ ) {
273 $this->mainUploadForm( wfMsgHtml( 'largefileserver' ) );
278 * If there was no filename or a zero size given, give up quick.
280 if( trim( $this->mSrcName
) == '' ||
empty( $this->mFileSize
) ) {
281 $this->mainUploadForm( wfMsgHtml( 'emptyfile' ) );
285 # Chop off any directories in the given filename
286 if( $this->mDesiredDestName
) {
287 $basename = wfBaseName( $this->mDesiredDestName
);
289 $basename = wfBaseName( $this->mSrcName
);
293 * We'll want to blacklist against *any* 'extension', and use
294 * only the final one for the whitelist.
296 list( $partname, $ext ) = $this->splitExtensions( $basename );
298 if( count( $ext ) ) {
299 $finalExt = $ext[count( $ext ) - 1];
304 # If there was more than one "extension", reassemble the base
305 # filename to prevent bogus complaints about length
306 if( count( $ext ) > 1 ) {
307 for( $i = 0; $i < count( $ext ) - 1; $i++
)
308 $partname .= '.' . $ext[$i];
311 if( strlen( $partname ) < 3 ) {
312 $this->mainUploadForm( wfMsgHtml( 'minlength' ) );
317 * Filter out illegal characters, and try to make a legible name
318 * out of it. We'll strip some silently that Title would die on.
320 $filtered = preg_replace ( "/[^".Title
::legalChars()."]|:/", '-', $basename );
321 $nt = Title
::makeTitleSafe( NS_IMAGE
, $filtered );
322 if( is_null( $nt ) ) {
323 $this->uploadError( wfMsgWikiHtml( 'illegalfilename', htmlspecialchars( $filtered ) ) );
326 $this->mLocalFile
= wfLocalFile( $nt );
327 $this->mDestName
= $this->mLocalFile
->getName();
330 * If the image is protected, non-sysop users won't be able
331 * to modify it by uploading a new revision.
333 if( !$nt->userCan( 'edit' ) ) {
334 return $this->uploadError( wfMsgWikiHtml( 'protectedpage' ) );
338 * In some cases we may forbid overwriting of existing files.
340 $overwrite = $this->checkOverwrite( $this->mDestName
);
341 if( WikiError
::isError( $overwrite ) ) {
342 return $this->uploadError( $overwrite->toString() );
345 /* Don't allow users to override the blacklist (check file extension) */
346 global $wgStrictFileExtensions;
347 global $wgFileExtensions, $wgFileBlacklist;
348 if ($finalExt == '') {
349 return $this->uploadError( wfMsgExt( 'filetype-missing', array ( 'parseinline' ) ) );
350 } elseif ( $this->checkFileExtensionList( $ext, $wgFileBlacklist ) ||
351 ($wgStrictFileExtensions && !$this->checkFileExtension( $finalExt, $wgFileExtensions ) ) ) {
352 return $this->uploadError( wfMsgExt( 'filetype-badtype', array ( 'parseinline' ),
353 htmlspecialchars( $finalExt ), implode ( ', ', $wgFileExtensions ) ) );
357 * Look at the contents of the file; if we can recognize the
358 * type but it's corrupt or data of the wrong type, we should
359 * probably not accept it.
361 if( !$this->mStashed
) {
362 $this->mFileProps
= File
::getPropsFromPath( $this->mTempPath
, $finalExt );
363 $this->checkMacBinary();
364 $veri = $this->verify( $this->mTempPath
, $finalExt );
366 if( $veri !== true ) { //it's a wiki error...
367 return $this->uploadError( $veri->toString() );
371 * Provide an opportunity for extensions to add futher checks
374 if( !wfRunHooks( 'UploadVerification',
375 array( $this->mDestName
, $this->mTempPath
, &$error ) ) ) {
376 return $this->uploadError( $error );
382 * Check for non-fatal conditions
384 if ( ! $this->mIgnoreWarning
) {
387 global $wgCapitalLinks;
388 if( $wgCapitalLinks ) {
389 $filtered = ucfirst( $filtered );
391 if( $this->mDestName
!= $filtered ) {
392 $warning .= '<li>'.wfMsgHtml( 'badfilename', htmlspecialchars( $this->mDestName
) ).'</li>';
395 global $wgCheckFileExtensions;
396 if ( $wgCheckFileExtensions ) {
397 if ( ! $this->checkFileExtension( $finalExt, $wgFileExtensions ) ) {
398 $warning .= '<li>'.wfMsgExt( 'filetype-badtype', array ( 'parseinline' ),
399 htmlspecialchars( $finalExt ), implode ( ', ', $wgFileExtensions ) ).'</li>';
403 global $wgUploadSizeWarning;
404 if ( $wgUploadSizeWarning && ( $this->mFileSize
> $wgUploadSizeWarning ) ) {
405 $skin = $wgUser->getSkin();
406 $wsize = $skin->formatSize( $wgUploadSizeWarning );
407 $asize = $skin->formatSize( $this->mFileSize
);
408 $warning .= '<li>' . wfMsgHtml( 'large-file', $wsize, $asize ) . '</li>';
410 if ( $this->mFileSize
== 0 ) {
411 $warning .= '<li>'.wfMsgHtml( 'emptyfile' ).'</li>';
415 $sk = $wgUser->getSkin();
417 // Check for uppercase extension. We allow these filenames but check if an image
418 // with lowercase extension exists already
419 if ( $finalExt != strtolower( $finalExt ) ) {
420 $nt_lc = Title
::newFromText( $partname . '.' . strtolower( $finalExt ) );
421 $image_lc = wfLocalFile( $nt_lc );
424 if( $this->mLocalFile
->exists() ) {
425 $dlink = $sk->makeKnownLinkObj( $nt );
426 if ( $this->mLocalFile
->allowInlineDisplay() ) {
427 $dlink2 = $sk->makeImageLinkObj( $nt, wfMsgExt( 'fileexists-thumb', 'parseinline', $dlink ),
428 $nt->getText(), 'right', array(), false, true );
429 } elseif ( !$this->mLocalFile
->allowInlineDisplay() && $this->mLocalFile
->isSafeFile() ) {
430 $icon = $this->mLocalFile
->iconThumb();
431 $dlink2 = '<div style="float:right" id="mw-media-icon"><a href="' . $this->mLocalFile
->getURL() . '">' .
432 $icon->toHtml() . '</a><br />' . $dlink . '</div>';
437 $warning .= '<li>' . wfMsgExt( 'fileexists', 'parseline', $dlink ) . '</li>' . $dlink2;
439 } elseif ( isset( $image_lc) && $image_lc->exists() ) {
440 # Check if image with lowercase extension exists.
441 # It's not forbidden but in 99% it makes no sense to upload the same filename with uppercase extension
442 $dlink = $sk->makeKnownLinkObj( $nt_lc );
443 if ( $image_lc->allowInlineDisplay() ) {
444 $dlink2 = $sk->makeImageLinkObj( $nt_lc, wfMsgExt( 'fileexists-thumb', 'parseinline', $dlink ),
445 $nt_lc->getText(), 'right', array(), false, true );
446 } elseif ( !$image_lc->allowInlineDisplay() && $image_lc->isSafeFile() ) {
447 $icon = $image_lc->iconThumb();
448 $dlink2 = '<div style="float:right" id="mw-media-icon"><a href="' . $image_lc->getURL() . '">' .
449 $icon->toHtml() . '</a><br />' . $dlink . '</div>';
454 $warning .= '<li>' . wfMsgExt( 'fileexists-extension', 'parsemag' , $partname . '.'
455 . $finalExt , $dlink ) . '</li>' . $dlink2;
457 } elseif ( ( substr( $partname , 3, 3 ) == 'px-' ||
substr( $partname , 2, 3 ) == 'px-' )
458 && ereg( "[0-9]{2}" , substr( $partname , 0, 2) ) )
460 # Check for filenames like 50px- or 180px-, these are mostly thumbnails
461 $nt_thb = Title
::newFromText( substr( $partname , strpos( $partname , '-' ) +
1 ) . '.' . $finalExt );
462 $image_thb = wfLocalFile( $nt_thb );
463 if ($image_thb->exists() ) {
464 # Check if an image without leading '180px-' (or similiar) exists
465 $dlink = $sk->makeKnownLinkObj( $nt_thb);
466 if ( $image_thb->allowInlineDisplay() ) {
467 $dlink2 = $sk->makeImageLinkObj( $nt_thb,
468 wfMsgExt( 'fileexists-thumb', 'parseinline', $dlink ),
469 $nt_thb->getText(), 'right', array(), false, true );
470 } elseif ( !$image_thb->allowInlineDisplay() && $image_thb->isSafeFile() ) {
471 $icon = $image_thb->iconThumb();
472 $dlink2 = '<div style="float:right" id="mw-media-icon"><a href="' .
473 $image_thb->getURL() . '">' . $icon->toHtml() . '</a><br />' .
479 $warning .= '<li>' . wfMsgExt( 'fileexists-thumbnail-yes', 'parsemag', $dlink ) .
482 # Image w/o '180px-' does not exists, but we do not like these filenames
483 $warning .= '<li>' . wfMsgExt( 'file-thumbnail-no', 'parseinline' ,
484 substr( $partname , 0, strpos( $partname , '-' ) +
1 ) ) . '</li>';
487 if ( $this->mLocalFile
->wasDeleted() ) {
488 # If the file existed before and was deleted, warn the user of this
489 # Don't bother doing so if the image exists now, however
490 $ltitle = SpecialPage
::getTitleFor( 'Log' );
491 $llink = $sk->makeKnownLinkObj( $ltitle, wfMsgHtml( 'deletionlog' ),
492 'type=delete&page=' . $nt->getPrefixedUrl() );
493 $warning .= wfOpenElement( 'li' ) . wfMsgWikiHtml( 'filewasdeleted', $llink ) .
494 wfCloseElement( 'li' );
497 if( $warning != '' ) {
499 * Stash the file in a temporary location; the user can choose
500 * to let it through and we'll complete the upload then.
502 return $this->uploadWarning( $warning );
507 * Try actually saving the thing...
508 * It will show an error form on failure.
510 $pageText = self
::getInitialPageText( $this->mComment
, $this->mLicense
,
511 $this->mCopyrightStatus
, $this->mCopyrightSource
);
513 $error = $this->mLocalFile
->upload( $this->mTempPath
, $this->mComment
, $pageText,
514 File
::DELETE_SOURCE
, $this->mFileProps
);
515 if ( WikiError
::isError( $error ) ) {
516 $this->showError( $error );
518 if ( $this->mWatchthis
) {
520 $wgUser->addWatch( $this->mLocalFile
->getTitle() );
522 $this->showSuccess();
523 wfRunHooks( 'UploadComplete', array( &$img ) );
528 * Stash a file in a temporary directory for later processing
529 * after the user has confirmed it.
531 * If the user doesn't explicitly cancel or accept, these files
532 * can accumulate in the temp directory.
534 * @param string $saveName - the destination filename
535 * @param string $tempName - the source temporary file to save
536 * @return string - full path the stashed file, or false on failure
539 function saveTempUploadedFile( $saveName, $tempName ) {
541 $repo = RepoGroup
::singleton()->getLocalRepo();
542 $result = $repo->storeTemp( $saveName, $tempName );
543 if ( WikiError
::isError( $result ) ) {
544 $this->showError( $result );
552 * Stash a file in a temporary directory for later processing,
553 * and save the necessary descriptive info into the session.
554 * Returns a key value which will be passed through a form
555 * to pick up the path info on a later invocation.
560 function stashSession() {
561 $stash = $this->saveTempUploadedFile( $this->mDestName
, $this->mTempPath
);
564 # Couldn't save the file.
568 $key = mt_rand( 0, 0x7fffffff );
569 $_SESSION['wsUploadData'][$key] = array(
570 'mTempPath' => $stash,
571 'mFileSize' => $this->mFileSize
,
572 'mSrcName' => $this->mSrcName
,
573 'mFileProps' => $this->mFileProps
,
574 'version' => self
::SESSION_VERSION
,
580 * Remove a temporarily kept file stashed by saveTempUploadedFile().
584 function unsaveUploadedFile() {
586 $repo = RepoGroup
::singleton()->getLocalRepo();
587 $success = $repo->freeTemp( $this->mTempPath
);
589 $wgOut->showFileDeleteError( $this->mTempPath
);
596 /* -------------------------------------------------------------- */
599 * Show some text and linkage on successful upload.
602 function showSuccess() {
603 global $wgUser, $wgOut, $wgContLang;
605 $sk = $wgUser->getSkin();
606 $ilink = $sk->makeMediaLinkObj( $this->mLocalFile
->getTitle() );
607 $dname = $wgContLang->getNsText( NS_IMAGE
) . ':'.$this->mDestName
;
608 $dlink = $sk->makeKnownLink( $dname, $dname );
610 $wgOut->addHTML( '<h2>' . wfMsgHtml( 'successfulupload' ) . "</h2>\n" );
611 $text = wfMsgWikiHtml( 'fileuploaded', $ilink, $dlink );
612 $wgOut->addHTML( $text );
613 $wgOut->returnToMain( false );
617 * @param string $error as HTML
620 function uploadError( $error ) {
622 $wgOut->addHTML( "<h2>" . wfMsgHtml( 'uploadwarning' ) . "</h2>\n" );
623 $wgOut->addHTML( "<span class='error'>{$error}</span>\n" );
627 * There's something wrong with this file, not enough to reject it
628 * totally but we require manual intervention to save it for real.
629 * Stash it away, then present a form asking to confirm or cancel.
631 * @param string $warning as HTML
634 function uploadWarning( $warning ) {
636 global $wgUseCopyrightUpload;
638 $this->mSessionKey
= $this->stashSession();
639 if( !$this->mSessionKey
) {
640 # Couldn't save file; an error has been displayed so let's go.
644 $wgOut->addHTML( "<h2>" . wfMsgHtml( 'uploadwarning' ) . "</h2>\n" );
645 $wgOut->addHTML( "<ul class='warning'>{$warning}</ul><br />\n" );
647 $save = wfMsgHtml( 'savefile' );
648 $reupload = wfMsgHtml( 'reupload' );
649 $iw = wfMsgWikiHtml( 'ignorewarning' );
650 $reup = wfMsgWikiHtml( 'reuploaddesc' );
651 $titleObj = SpecialPage
::getTitleFor( 'Upload' );
652 $action = $titleObj->escapeLocalURL( 'action=submit' );
654 if ( $wgUseCopyrightUpload )
657 <input type='hidden' name='wpUploadCopyStatus' value=\"" . htmlspecialchars( $this->mCopyrightStatus
) . "\" />
658 <input type='hidden' name='wpUploadSource' value=\"" . htmlspecialchars( $this->mCopyrightSource
) . "\" />
665 <form id='uploadwarning' method='post' enctype='multipart/form-data' action='$action'>
666 <input type='hidden' name='wpIgnoreWarning' value='1' />
667 <input type='hidden' name='wpSessionKey' value=\"" . htmlspecialchars( $this->mSessionKey
) . "\" />
668 <input type='hidden' name='wpUploadDescription' value=\"" . htmlspecialchars( $this->mComment
) . "\" />
669 <input type='hidden' name='wpLicense' value=\"" . htmlspecialchars( $this->mLicense
) . "\" />
670 <input type='hidden' name='wpDestFile' value=\"" . htmlspecialchars( $this->mDesiredDestName
) . "\" />
671 <input type='hidden' name='wpWatchthis' value=\"" . htmlspecialchars( intval( $this->mWatchthis
) ) . "\" />
677 <input tabindex='2' type='submit' name='wpUpload' value=\"$save\" />
679 <td align='left'>$iw</td>
683 <input tabindex='2' type='submit' name='wpReUpload' value=\"{$reupload}\" />
685 <td align='left'>$reup</td>
688 </table></form>\n" );
692 * Displays the main upload form, optionally with a highlighted
693 * error message up at the top.
695 * @param string $msg as HTML
698 function mainUploadForm( $msg='' ) {
699 global $wgOut, $wgUser;
700 global $wgUseCopyrightUpload;
701 global $wgRequest, $wgAllowCopyUploads;
703 if( !wfRunHooks( 'UploadForm:initial', array( &$this ) ) )
705 wfDebug( "Hook 'UploadForm:initial' broke output of the upload form" );
709 $cols = intval($wgUser->getOption( 'cols' ));
710 $ew = $wgUser->getOption( 'editwidth' );
711 if ( $ew ) $ew = " style=\"width:100%\"";
715 $sub = wfMsgHtml( 'uploaderror' );
716 $wgOut->addHTML( "<h2>{$sub}</h2>\n" .
717 "<span class='error'>{$msg}</span>\n" );
719 $wgOut->addHTML( '<div id="uploadtext">' );
720 $wgOut->addWikiText( wfMsgNoTrans( 'uploadtext', $this->mDesiredDestName
) );
721 $wgOut->addHTML( '</div>' );
723 $sourcefilename = wfMsgHtml( 'sourcefilename' );
724 $destfilename = wfMsgHtml( 'destfilename' );
725 $summary = wfMsgWikiHtml( 'fileuploadsummary' );
727 $licenses = new Licenses();
728 $license = wfMsgHtml( 'license' );
729 $nolicense = wfMsgHtml( 'nolicense' );
730 $licenseshtml = $licenses->getHtml();
732 $ulb = wfMsgHtml( 'uploadbtn' );
735 $titleObj = SpecialPage
::getTitleFor( 'Upload' );
736 $action = $titleObj->escapeLocalURL();
738 $encDestName = htmlspecialchars( $this->mDesiredDestName
);
741 ( $wgUser->getOption( 'watchdefault' ) ||
742 ( $wgUser->getOption( 'watchcreations' ) && $this->mDesiredDestName
== '' ) )
743 ?
'checked="checked"'
746 // Prepare form for upload or upload/copy
747 if( $wgAllowCopyUploads && $wgUser->isAllowed( 'upload_by_url' ) ) {
749 "<input type='radio' id='wpSourceTypeFile' name='wpSourceType' value='file' " .
750 "onchange='toggle_element_activation(\"wpUploadFileURL\",\"wpUploadFile\")' checked />" .
751 "<input tabindex='1' type='file' name='wpUploadFile' id='wpUploadFile' " .
753 "toggle_element_activation(\"wpUploadFileURL\",\"wpUploadFile\");" .
754 "toggle_element_check(\"wpSourceTypeFile\",\"wpSourceTypeURL\")'" .
755 ($this->mDesiredDestName?
"":"onchange='fillDestFilename(\"wpUploadFile\")' ") . "size='40' />" .
756 wfMsgHTML( 'upload_source_file' ) . "<br/>" .
757 "<input type='radio' id='wpSourceTypeURL' name='wpSourceType' value='web' " .
758 "onchange='toggle_element_activation(\"wpUploadFile\",\"wpUploadFileURL\")' />" .
759 "<input tabindex='1' type='text' name='wpUploadFileURL' id='wpUploadFileURL' " .
761 "toggle_element_activation(\"wpUploadFile\",\"wpUploadFileURL\");" .
762 "toggle_element_check(\"wpSourceTypeURL\",\"wpSourceTypeFile\")'" .
763 ($this->mDesiredDestName?
"":"onchange='fillDestFilename(\"wpUploadFileURL\")' ") . "size='40' DISABLED />" .
764 wfMsgHtml( 'upload_source_url' ) ;
767 "<input tabindex='1' type='file' name='wpUploadFile' id='wpUploadFile' " .
768 ($this->mDesiredDestName?
"":"onchange='fillDestFilename(\"wpUploadFile\")' ") .
770 "<input type='hidden' name='wpSourceType' value='file' />" ;
772 $encComment = htmlspecialchars( $this->mComment
);
774 $wgOut->addHTML( <<<EOT
775 <form id='upload' method='post' enctype='multipart/form-data' action="$action">
778 {$this->uploadFormTextTop}
779 <td align='right' valign='top'><label for='wpUploadFile'>{$sourcefilename}:</label></td>
785 <td align='right'><label for='wpDestFile'>{$destfilename}:</label></td>
787 <input tabindex='2' type='text' name='wpDestFile' id='wpDestFile' size='40' value="$encDestName" />
791 <td align='right'><label for='wpUploadDescription'>{$summary}</label></td>
793 <textarea tabindex='3' name='wpUploadDescription' id='wpUploadDescription' rows='6'
794 cols='{$cols}'{$ew}>$encComment</textarea>
795 {$this->uploadFormTextAfterSummary}
802 if ( $licenseshtml != '' ) {
805 <td align='right'><label for='wpLicense'>$license:</label></td>
807 <script type='text/javascript' src=\"$wgStylePath/common/upload.js\"></script>
808 <select name='wpLicense' id='wpLicense' tabindex='4'
809 onchange='licenseSelectorCheck()'>
810 <option value=''>$nolicense</option>
819 if ( $wgUseCopyrightUpload ) {
820 $filestatus = wfMsgHtml ( 'filestatus' );
821 $copystatus = htmlspecialchars( $this->mCopyrightStatus
);
822 $filesource = wfMsgHtml ( 'filesource' );
823 $uploadsource = htmlspecialchars( $this->mCopyrightSource
);
826 <td align='right' nowrap='nowrap'><label for='wpUploadCopyStatus'>$filestatus:</label></td>
827 <td><input tabindex='5' type='text' name='wpUploadCopyStatus' id='wpUploadCopyStatus'
828 value=\"$copystatus\" size='40' /></td>
831 <td align='right'><label for='wpUploadCopyStatus'>$filesource:</label></td>
832 <td><input tabindex='6' type='text' name='wpUploadSource' id='wpUploadCopyStatus'
833 value=\"$uploadsource\" size='40' /></td>
843 <input tabindex='7' type='checkbox' name='wpWatchthis' id='wpWatchthis' $watchChecked value='true' />
844 <label for='wpWatchthis'>" . wfMsgHtml( 'watchthisupload' ) . "</label>
845 <input tabindex='8' type='checkbox' name='wpIgnoreWarning' id='wpIgnoreWarning' value='true' />
846 <label for='wpIgnoreWarning'>" . wfMsgHtml( 'ignorewarnings' ) . "</label>
851 <td align='left'><input tabindex='9' type='submit' name='wpUpload' value=\"{$ulb}\" /></td>
858 $wgOut->addWikiText( wfMsgForContent( 'edittools' ) );
867 /* -------------------------------------------------------------- */
870 * Split a file into a base name and all dot-delimited 'extensions'
871 * on the end. Some web server configurations will fall back to
872 * earlier pseudo-'extensions' to determine type and execute
873 * scripts, so the blacklist needs to check them all.
877 function splitExtensions( $filename ) {
878 $bits = explode( '.', $filename );
879 $basename = array_shift( $bits );
880 return array( $basename, $bits );
884 * Perform case-insensitive match against a list of file extensions.
885 * Returns true if the extension is in the list.
891 function checkFileExtension( $ext, $list ) {
892 return in_array( strtolower( $ext ), $list );
896 * Perform case-insensitive match against a list of file extensions.
897 * Returns true if any of the extensions are in the list.
903 function checkFileExtensionList( $ext, $list ) {
904 foreach( $ext as $e ) {
905 if( in_array( strtolower( $e ), $list ) ) {
913 * Verifies that it's ok to include the uploaded file
915 * @param string $tmpfile the full path of the temporary file to verify
916 * @param string $extension The filename extension that the file is to be served with
917 * @return mixed true of the file is verified, a WikiError object otherwise.
919 function verify( $tmpfile, $extension ) {
920 #magically determine mime type
921 $magic=& MimeMagic
::singleton();
922 $mime= $magic->guessMimeType($tmpfile,false);
924 #check mime type, if desired
925 global $wgVerifyMimeType;
926 if ($wgVerifyMimeType) {
928 #check mime type against file extension
929 if( !$this->verifyExtension( $mime, $extension ) ) {
930 return new WikiErrorMsg( 'uploadcorrupt' );
933 #check mime type blacklist
934 global $wgMimeTypeBlacklist;
935 if( isset($wgMimeTypeBlacklist) && !is_null($wgMimeTypeBlacklist)
936 && $this->checkFileExtension( $mime, $wgMimeTypeBlacklist ) ) {
937 return new WikiErrorMsg( 'filetype-badmime', htmlspecialchars( $mime ) );
941 #check for htmlish code and javascript
942 if( $this->detectScript ( $tmpfile, $mime, $extension ) ) {
943 return new WikiErrorMsg( 'uploadscripted' );
947 * Scan the uploaded file for viruses
949 $virus= $this->detectVirus($tmpfile);
951 return new WikiErrorMsg( 'uploadvirus', htmlspecialchars($virus) );
954 wfDebug( __METHOD__
.": all clear; passing.\n" );
959 * Checks if the mime type of the uploaded file matches the file extension.
961 * @param string $mime the mime type of the uploaded file
962 * @param string $extension The filename extension that the file is to be served with
965 function verifyExtension( $mime, $extension ) {
966 $magic =& MimeMagic
::singleton();
968 if ( ! $mime ||
$mime == 'unknown' ||
$mime == 'unknown/unknown' )
969 if ( ! $magic->isRecognizableExtension( $extension ) ) {
970 wfDebug( __METHOD__
.": passing file with unknown detected mime type; " .
971 "unrecognized extension '$extension', can't verify\n" );
974 wfDebug( __METHOD__
.": rejecting file with unknown detected mime type; ".
975 "recognized extension '$extension', so probably invalid file\n" );
979 $match= $magic->isMatchingExtension($extension,$mime);
982 wfDebug( __METHOD__
.": no file extension known for mime type $mime, passing file\n" );
984 } elseif ($match===true) {
985 wfDebug( __METHOD__
.": mime type $mime matches extension $extension, passing file\n" );
987 #TODO: if it's a bitmap, make sure PHP or ImageMagic resp. can handle it!
991 wfDebug( __METHOD__
.": mime type $mime mismatches file extension $extension, rejecting file\n" );
997 * Heuristic for detecting files that *could* contain JavaScript instructions or
998 * things that may look like HTML to a browser and are thus
999 * potentially harmful. The present implementation will produce false positives in some situations.
1001 * @param string $file Pathname to the temporary upload file
1002 * @param string $mime The mime type of the file
1003 * @param string $extension The extension of the file
1004 * @return bool true if the file contains something looking like embedded scripts
1006 function detectScript($file, $mime, $extension) {
1007 global $wgAllowTitlesInSVG;
1009 #ugly hack: for text files, always look at the entire file.
1010 #For binarie field, just check the first K.
1012 if (strpos($mime,'text/')===0) $chunk = file_get_contents( $file );
1014 $fp = fopen( $file, 'rb' );
1015 $chunk = fread( $fp, 1024 );
1019 $chunk= strtolower( $chunk );
1021 if (!$chunk) return false;
1023 #decode from UTF-16 if needed (could be used for obfuscation).
1024 if (substr($chunk,0,2)=="\xfe\xff") $enc= "UTF-16BE";
1025 elseif (substr($chunk,0,2)=="\xff\xfe") $enc= "UTF-16LE";
1028 if ($enc) $chunk= iconv($enc,"ASCII//IGNORE",$chunk);
1030 $chunk= trim($chunk);
1032 #FIXME: convert from UTF-16 if necessarry!
1034 wfDebug("SpecialUpload::detectScript: checking for embedded scripts and HTML stuff\n");
1036 #check for HTML doctype
1037 if (eregi("<!DOCTYPE *X?HTML",$chunk)) return true;
1040 * Internet Explorer for Windows performs some really stupid file type
1041 * autodetection which can cause it to interpret valid image files as HTML
1042 * and potentially execute JavaScript, creating a cross-site scripting
1045 * Apple's Safari browser also performs some unsafe file type autodetection
1046 * which can cause legitimate files to be interpreted as HTML if the
1047 * web server is not correctly configured to send the right content-type
1048 * (or if you're really uploading plain text and octet streams!)
1050 * Returns true if IE is likely to mistake the given file for HTML.
1051 * Also returns true if Safari would mistake the given file for HTML
1052 * when served with a generic content-type.
1058 '<html', #also in safari
1061 '<script', #also in safari
1064 if( ! $wgAllowTitlesInSVG && $extension !== 'svg' && $mime !== 'image/svg' ) {
1068 foreach( $tags as $tag ) {
1069 if( false !== strpos( $chunk, $tag ) ) {
1075 * look for javascript
1078 #resolve entity-refs to look at attributes. may be harsh on big files... cache result?
1079 $chunk = Sanitizer
::decodeCharReferences( $chunk );
1081 #look for script-types
1082 if (preg_match('!type\s*=\s*[\'"]?\s*(?:\w*/)?(?:ecma|java)!sim',$chunk)) return true;
1084 #look for html-style script-urls
1085 if (preg_match('!(?:href|src|data)\s*=\s*[\'"]?\s*(?:ecma|java)script:!sim',$chunk)) return true;
1087 #look for css-style script-urls
1088 if (preg_match('!url\s*\(\s*[\'"]?\s*(?:ecma|java)script:!sim',$chunk)) return true;
1090 wfDebug("SpecialUpload::detectScript: no scripts found\n");
1095 * Generic wrapper function for a virus scanner program.
1096 * This relies on the $wgAntivirus and $wgAntivirusSetup variables.
1097 * $wgAntivirusRequired may be used to deny upload if the scan fails.
1099 * @param string $file Pathname to the temporary upload file
1100 * @return mixed false if not virus is found, NULL if the scan fails or is disabled,
1101 * or a string containing feedback from the virus scanner if a virus was found.
1102 * If textual feedback is missing but a virus was found, this function returns true.
1104 function detectVirus($file) {
1105 global $wgAntivirus, $wgAntivirusSetup, $wgAntivirusRequired, $wgOut;
1107 if ( !$wgAntivirus ) {
1108 wfDebug( __METHOD__
.": virus scanner disabled\n");
1112 if ( !$wgAntivirusSetup[$wgAntivirus] ) {
1113 wfDebug( __METHOD__
.": unknown virus scanner: $wgAntivirus\n" );
1115 $wgOut->addHTML( "<div class='error'>Bad configuration: unknown virus scanner: <i>$wgAntivirus</i></div>\n" );
1116 return "unknown antivirus: $wgAntivirus";
1119 # look up scanner configuration
1120 $command = $wgAntivirusSetup[$wgAntivirus]["command"];
1121 $exitCodeMap = $wgAntivirusSetup[$wgAntivirus]["codemap"];
1122 $msgPattern = isset( $wgAntivirusSetup[$wgAntivirus]["messagepattern"] ) ?
1123 $wgAntivirusSetup[$wgAntivirus]["messagepattern"] : null;
1125 if ( strpos( $command,"%f" ) === false ) {
1126 # simple pattern: append file to scan
1127 $command .= " " . wfEscapeShellArg( $file );
1129 # complex pattern: replace "%f" with file to scan
1130 $command = str_replace( "%f", wfEscapeShellArg( $file ), $command );
1133 wfDebug( __METHOD__
.": running virus scan: $command \n" );
1135 # execute virus scanner
1138 #NOTE: there's a 50 line workaround to make stderr redirection work on windows, too.
1139 # that does not seem to be worth the pain.
1140 # Ask me (Duesentrieb) about it if it's ever needed.
1142 if ( wfIsWindows() ) {
1143 exec( "$command", $output, $exitCode );
1145 exec( "$command 2>&1", $output, $exitCode );
1148 # map exit code to AV_xxx constants.
1149 $mappedCode = $exitCode;
1150 if ( $exitCodeMap ) {
1151 if ( isset( $exitCodeMap[$exitCode] ) ) {
1152 $mappedCode = $exitCodeMap[$exitCode];
1153 } elseif ( isset( $exitCodeMap["*"] ) ) {
1154 $mappedCode = $exitCodeMap["*"];
1158 if ( $mappedCode === AV_SCAN_FAILED
) {
1159 # scan failed (code was mapped to false by $exitCodeMap)
1160 wfDebug( __METHOD__
.": failed to scan $file (code $exitCode).\n" );
1162 if ( $wgAntivirusRequired ) {
1163 return "scan failed (code $exitCode)";
1167 } else if ( $mappedCode === AV_SCAN_ABORTED
) {
1168 # scan failed because filetype is unknown (probably imune)
1169 wfDebug( __METHOD__
.": unsupported file type $file (code $exitCode).\n" );
1171 } else if ( $mappedCode === AV_NO_VIRUS
) {
1173 wfDebug( __METHOD__
.": file passed virus scan.\n" );
1176 $output = join( "\n", $output );
1177 $output = trim( $output );
1180 $output = true; #if there's no output, return true
1181 } elseif ( $msgPattern ) {
1183 if ( preg_match( $msgPattern, $output, $groups ) ) {
1185 $output = $groups[1];
1190 wfDebug( __METHOD__
.": FOUND VIRUS! scanner feedback: $output" );
1196 * Check if the temporary file is MacBinary-encoded, as some uploads
1197 * from Internet Explorer on Mac OS Classic and Mac OS X will be.
1198 * If so, the data fork will be extracted to a second temporary file,
1199 * which will then be checked for validity and either kept or discarded.
1203 function checkMacBinary() {
1204 $macbin = new MacBinary( $this->mTempPath
);
1205 if( $macbin->isValid() ) {
1206 $dataFile = tempnam( wfTempDir(), "WikiMacBinary" );
1207 $dataHandle = fopen( $dataFile, 'wb' );
1209 wfDebug( "SpecialUpload::checkMacBinary: Extracting MacBinary data fork to $dataFile\n" );
1210 $macbin->extractData( $dataHandle );
1212 $this->mTempPath
= $dataFile;
1213 $this->mFileSize
= $macbin->dataForkLength();
1215 // We'll have to manually remove the new file if it's not kept.
1216 $this->mRemoveTempFile
= true;
1222 * If we've modified the upload file we need to manually remove it
1223 * on exit to clean up.
1226 function cleanupTempFile() {
1227 if ( $this->mRemoveTempFile
&& file_exists( $this->mTempPath
) ) {
1228 wfDebug( "SpecialUpload::cleanupTempFile: Removing temporary file {$this->mTempPath}\n" );
1229 unlink( $this->mTempPath
);
1234 * Check if there's an overwrite conflict and, if so, if restrictions
1235 * forbid this user from performing the upload.
1237 * @return mixed true on success, WikiError on failure
1240 function checkOverwrite( $name ) {
1241 $img = wfFindFile( $name );
1245 global $wgUser, $wgOut;
1246 if( $img->isLocal() ) {
1247 if( !self
::userCanReUpload( $wgUser, $img->name
) ) {
1248 $error = 'fileexists-forbidden';
1251 if( !$wgUser->isAllowed( 'reupload' ) ||
1252 !$wgUser->isAllowed( 'reupload-shared' ) ) {
1253 $error = "fileexists-shared-forbidden";
1259 $errorText = wfMsg( $error, wfEscapeWikiText( $img->getName() ) );
1260 return new WikiError( $wgOut->parse( $errorText ) );
1263 // Rockin', go ahead and upload
1268 * Check if a user is the last uploader
1271 * @param string $img, image name
1274 public static function userCanReUpload( User
$user, $img ) {
1275 if( $user->isAllowed( 'reupload' ) )
1276 return true; // non-conditional
1277 if( !$user->isAllowed( 'reupload-own' ) )
1280 $dbr = wfGetDB( DB_SLAVE
);
1281 $row = $dbr->selectRow('image',
1282 /* SELECT */ 'img_user',
1283 /* WHERE */ array( 'img_name' => $img )
1288 return $user->getID() == $row->img_user
;
1292 * Display an error from a wikitext-formatted WikiError object
1294 function showError( WikiError
$error ) {
1296 $wgOut->setPageTitle( wfMsg( "internalerror" ) );
1297 $wgOut->setRobotpolicy( "noindex,nofollow" );
1298 $wgOut->setArticleRelated( false );
1299 $wgOut->enableClientCache( false );
1300 $wgOut->addWikiText( $error->getMessage() );
1304 * Get the initial image page text based on a comment and optional file status information
1306 static function getInitialPageText( $comment, $license, $copyStatus, $source ) {
1307 global $wgUseCopyrightUpload;
1308 if ( $wgUseCopyrightUpload ) {
1309 if ( $license != '' ) {
1310 $licensetxt = '== ' . wfMsgForContent( 'license' ) . " ==\n" . '{{' . $license . '}}' . "\n";
1312 $pageText = '== ' . wfMsg ( 'filedesc' ) . " ==\n" . $comment . "\n" .
1313 '== ' . wfMsgForContent ( 'filestatus' ) . " ==\n" . $copyStatus . "\n" .
1315 '== ' . wfMsgForContent ( 'filesource' ) . " ==\n" . $source ;
1317 if ( $license != '' ) {
1318 $filedesc = $comment == '' ?
'' : '== ' . wfMsg ( 'filedesc' ) . " ==\n" . $comment . "\n";
1319 $pageText = $filedesc .
1320 '== ' . wfMsgForContent ( 'license' ) . " ==\n" . '{{' . $license . '}}' . "\n";
1322 $pageText = $comment;