>> Hi, Yaron!
>> One of my forms uses {{{field|filename|mandatory|uploadable}}}
>> my wiki and system locale is Russian. SF seems to be mostly
>> well-translated, everything
>> displays in Cyrillic. But, when I click on my Russian equivalent of
>> "Upload file" link
>> (exactly the same as
>> http://discoursedb.org/wiki/Special:AddData/Images_test/Some_new_page )
>> the popup JS window contains garbage characters instead of properly
>> translated Cyrillic help.
>> My browser is Firefox 3.0.3, so it's not old and it's not IE. My guess
>> is that some JS uses
>> non-UTF8 encoding of Cyrillic letters.
>> However, I can't find any translation or even English sources for these
>> messages in SF_Messages.php!
>>
>> Can you point me out, where these texts and translations are located,
>> please?
>>
>> "Use the form below to upload files. To view or search previously
>> uploaded files go to the list of uploaded files, (re)uploads are also
>> logged in the upload log, deletions in the deletion log.
>>
>> To include a file in a page, use a link in one of the following forms:
>>
>> * [[Image:File.jpg]] to use the full version of the file
>> * [[Image:File.png|200px|thumb|left|alt text]] to use a 200 pixel
>> wide rendition in a box in the left margin with 'alt text' as description
>> * [[Media:File.ogg]] for directly linking to the file without
>> displaying the file
>> "
>>
>> Dmitriy
>>
>>
>>
Seems that I've figured it out myself. No proper page encoding was
specified in JS popup window,
so it probably worked correctly only with latin characters. I've added
to SF_UploadWindow.php
the following line:
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<head>
before the head of the page and now it displays the Cyrillic just fine.
The text was taken from
mediawiki Special:Upload, that's why I wasn't unable to find it anywhere.
May I ask to add the forementioned <meta> string to SVN?
That would be better than patching every new version manually.
Dmitriy
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setHeaders();
doSpecialUploadWindow();
}
}
/**
* Entry point
*/
function doSpecialUploadWindow() {
global $wgRequest, $wgOut, $wgUser, $wgServer;
global $wgScript, $wgJsMimeType, $wgStylePath, $wgStyleVersion;
global $wgContLang, $wgLanguageCode, $wgXhtmlDefaultNamespace, $wgXhtmlNamespaces;
global $wgUseAjax, $wgAjaxUploadDestCheck, $wgAjaxLicensePreview;
// disable $wgOut - we'll print out the page manually, taking the
// body created by the form, plus the necessary _javascript_ files,
// and turning them into an HTML page
$wgOut->disable();
$form = new UploadWindowForm( $wgRequest );
$form->execute();
$sk = $wgUser->getSkin();
$sk->initPage($wgOut); // need to call this to set skin name correctly
// call to get user JS was changed in MW 1.14
if (method_exists($sk, 'generateUserJs')) {
$skin_user_js = $sk->generateUserJs();
} else {
$skin_user_js = $sk->getUserJs();
}
$useAjaxDestCheck = $wgUseAjax && $wgAjaxUploadDestCheck;
$useAjaxLicensePreview = $wgUseAjax && $wgAjaxLicensePreview;
$adc = wfBoolToStr( $useAjaxDestCheck );
$alp = wfBoolToStr( $useAjaxLicensePreview );
$autofill = wfBoolToStr( true );
$user_js =<< $sk->getSkinName()));
$wikibits_include = "";
$ajax_include = "";
$ajaxwatch_include = "";
$text = <<isRTL() ? "rtl" : "ltr";
$text .= "xml:lang=\"{$wgLanguageCode}\" lang=\"{$wgLanguageCode}\" dir=\"{$dir}\">";
$text .= <<getHTML()}
END;
print $text;
}
/**
* implements Special:UploadWindow
* @addtogroup SpecialPage
*/
class UploadWindowForm {
/[EMAIL PROTECTED]
* @access private
*/
var $mComment, $mLicense, $mIgnoreWarning, $mCurlError;
var $mDestName, $mTempPath, $mFileSize, $mFileProps;
var $mCopyrightStatus, $mCopyrightSource, $mReUpload, $mAction, $mUploadClicked;
var $mSrcName, $mSessionKey, $mStashed, $mDesiredDestName, $mRemoveTempFile, $mSourceType;
var $mDestWarningAck, $mCurlDestHandle;
var $mLocalFile;
# Placeholders for text injection by hooks (must be HTML)
# extensions should take care to _append_ to the present value
var $uploadFormTextTop;
var $uploadFormTextAfterSummary;
# used by Semantic Forms
var $mInputID;
var $mDelimiter;
const SESSION_VERSION = 1;
/[EMAIL PROTECTED]/
/**
* Constructor : initialise object
* Get data POSTed through the form and assign them to the object
* @param $request Data posted.
*/
function UploadWindowForm( &$request ) {
global $wgAllowCopyUploads;
$this->mDesiredDestName = $request->getText( 'wpDestFile' );
$this->mIgnoreWarning = $request->getCheck( 'wpIgnoreWarning' );
$this->mComment = $request->getText( 'wpUploadDescription' );
$this->mInputID = $request->getText( 'sfInputID' );
$this->mDelimiter = $request->getText( 'sfDelimiter' );
if( !$request->wasPosted() ) {
# GET requests just give the main form; no data except destination
# filename and description
return;
}
# Placeholders for text injection by hooks (empty per default)
$this->uploadFormTextTop = "";
$this->uploadFormTextAfterSummary = "";
$this->mReUpload = $request->getCheck( 'wpReUpload' );
$this->mUploadClicked = $request->getCheck( 'wpUpload' );
$this->mLicense = $request->getText( 'wpLicense' );
$this->mCopyrightStatus = $request->getText( 'wpUploadCopyStatus' );
$this->mCopyrightSource = $request->getText( 'wpUploadSource' );
$this->mWatchthis = $request->getBool( 'wpWatchthis' );
$this->mSourceType = $request->getText( 'wpSourceType' );
$this->mDestWarningAck = $request->getText( 'wpDestFileWarningAck' );
$this->mAction = $request->getVal( 'action' );
$this->mSessionKey = $request->getInt( 'wpSessionKey' );
if( !empty( $this->mSessionKey ) &&
isset( $_SESSION['wsUploadData'][$this->mSessionKey]['version'] ) &&
$_SESSION['wsUploadData'][$this->mSessionKey]['version'] == self::SESSION_VERSION ) {
/**
* Confirming a temporarily stashed upload.
* We don't want path names to be forged, so we keep
* them in the session on the server and just give
* an opaque key to the user agent.
*/
$data = "">mSessionKey];
$this->mTempPath = $data['mTempPath'];
$this->mFileSize = $data['mFileSize'];
$this->mSrcName = $data['mSrcName'];
$this->mFileProps = $data['mFileProps'];
$this->mCurlError = 0/*UPLOAD_ERR_OK*/;
$this->mStashed = true;
$this->mRemoveTempFile = false;
} else {
/**
*Check for a newly uploaded file.
*/
if( $wgAllowCopyUploads && $this->mSourceType == 'web' ) {
$this->initializeFromUrl( $request );
} else {
$this->initializeFromUpload( $request );
}
}
}
/**
* Initialize the uploaded file from PHP data
* @access private
*/
function initializeFromUpload( $request ) {
$this->mTempPath = $request->getFileTempName( 'wpUploadFile' );
$this->mFileSize = $request->getFileSize( 'wpUploadFile' );
$this->mSrcName = $request->getFileName( 'wpUploadFile' );
$this->mCurlError = $request->getUploadError( 'wpUploadFile' );
$this->mSessionKey = false;
$this->mStashed = false;
$this->mRemoveTempFile = false; // PHP will handle this
$this->mInputID = $request->getText( 'sfInputID' );
$this->mDelimiter = $request->getText( 'sfDelimiter' );
}
/**
* Copy a web file to a temporary file
* @access private
*/
function initializeFromUrl( $request ) {
global $wgTmpDirectory;
$url = "">getText( 'wpUploadFileURL' );
$local_file = tempnam( $wgTmpDirectory, 'WEBUPLOAD' );
$this->mTempPath = $local_file;
$this->mFileSize = 0; # Will be set by curlCopy
$this->mCurlError = $this->curlCopy( $url, $local_file );
$this->mSrcName = array_pop( explode( '/', $url ) );
$this->mSessionKey = false;
$this->mStashed = false;
// PHP won't auto-cleanup the file
$this->mRemoveTempFile = file_exists( $local_file );
}
/**
* Safe copy from URL
* Returns true if there was an error, false otherwise
*/
private function curlCopy( $url, $dest ) {
global $wgUser, $wgOut;
if( !$wgUser->isAllowed( 'upload_by_url' ) ) {
$wgOut->permissionRequired( 'upload_by_url' );
return true;
}
# Maybe remove some pasting blanks :-)
$url = "" $url );
if( stripos($url, 'http://') !== 0 && stripos($url, 'ftp://') !== 0 ) {
# Only HTTP or FTP URLs
$wgOut->errorPage( 'upload-proto-error', 'upload-proto-error-text' );
return true;
}
# Open temporary file
$this->mCurlDestHandle = @fopen( $this->mTempPath, "wb" );
if( $this->mCurlDestHandle === false ) {
# Could not open temporary file to write in
$wgOut->errorPage( 'upload-file-error', 'upload-file-error-text');
return true;
}
$ch = curl_init();
curl_setopt( $ch, CURLOPT_HTTP_VERSION, 1.0); # Probably not needed, but apparently can work around some bug
curl_setopt( $ch, CURLOPT_TIMEOUT, 10); # 10 seconds timeout
curl_setopt( $ch, CURLOPT_LOW_SPEED_LIMIT, 512); # 0.5KB per second minimum transfer speed
curl_setopt( $ch, CURLOPT_URL, $url);
curl_setopt( $ch, CURLOPT_WRITEFUNCTION, array( $this, 'uploadCurlCallback' ) );
curl_exec( $ch );
$error = curl_errno( $ch ) ? true : false;
$errornum = curl_errno( $ch );
// if ( $error ) print curl_error ( $ch ) ; # Debugging output
curl_close( $ch );
fclose( $this->mCurlDestHandle );
unset( $this->mCurlDestHandle );
if( $error ) {
unlink( $dest );
if( wfEmptyMsg( "upload-curl-error$errornum", wfMsg("upload-curl-error$errornum") ) )
$wgOut->errorPage( 'upload-misc-error', 'upload-misc-error-text' );
else
$wgOut->errorPage( "upload-curl-error$errornum", "upload-curl-error$errornum-text" );
}
return $error;
}
/**
* Callback function for CURL-based web transfer
* Write data to file unless we've passed the length limit;
* if so, abort immediately.
* @access private
*/
function uploadCurlCallback( $ch, $data ) {
global $wgMaxUploadSize;
$length = strlen( $data );
$this->mFileSize += $length;
if( $this->mFileSize > $wgMaxUploadSize ) {
return 0;
}
fwrite( $this->mCurlDestHandle, $data );
return $length;
}
/**
* Start doing stuff
* @access public
*/
function execute() {
global $wgUser, $wgOut;
global $wgEnableUploads;
# Check uploading enabled
if( !$wgEnableUploads ) {
$wgOut->showErrorPage( 'uploaddisabled', 'uploaddisabledtext', array( $this->mDesiredDestName ) );
return;
}
# Check permissions
if( !$wgUser->isAllowed( 'upload' ) ) {
if( !$wgUser->isLoggedIn() ) {
$wgOut->showErrorPage( 'uploadnologin', 'uploadnologintext' );
} else {
$wgOut->permissionRequired( 'upload' );
}
return;
}
# Check blocks
if( $wgUser->isBlocked() ) {
$wgOut->blockedPage();
return;
}
if( wfReadOnly() ) {
$wgOut->readOnlyPage();
return;
}
if( $this->mReUpload ) {
if( !$this->unsaveUploadedFile() ) {
return;
}
$this->mainUploadWindowForm();
} else if( 'submit' == $this->mAction || $this->mUploadClicked ) {
$this->processUpload();
} else {
$this->mainUploadWindowForm();
}
$this->cleanupTempFile();
}
/* -------------------------------------------------------------- */
/**
* Really do the upload
* Checks are made in SpecialUpload::execute()
* @access private
*/
function processUpload() {
global $wgUser, $wgOut;
if( !wfRunHooks( 'UploadForm:BeforeProcessing', array( &$this ) ) )
{
wfDebug( "Hook 'UploadForm:BeforeProcessing' broke processing the file." );
return false;
}
/* Check for PHP error if any, requires php 4.2 or newer */
if( $this->mCurlError == 1/*UPLOAD_ERR_INI_SIZE*/ ) {
$this->mainUploadWindowForm( wfMsgHtml( 'largefileserver' ) );
return;
}
/**
* If there was no filename or a zero size given, give up quick.
*/
if( trim( $this->mSrcName ) == '' || empty( $this->mFileSize ) ) {
$this->mainUploadWindowForm( wfMsgHtml( 'emptyfile' ) );
return;
}
# Chop off any directories in the given filename
if( $this->mDesiredDestName ) {
$basename = $this->mDesiredDestName;
} else {
$basename = $this->mSrcName;
}
$filtered = wfBaseName( $basename );
/**
* We'll want to blacklist against *any* 'extension', and use
* only the final one for the whitelist.
*/
list( $partname, $ext ) = $this->splitExtensions( $filtered );
if( count( $ext ) ) {
$finalExt = $ext[count( $ext ) - 1];
} else {
$finalExt = '';
}
# If there was more than one "extension", reassemble the base
# filename to prevent bogus complaints about length
if( count( $ext ) > 1 ) {
for( $i = 0; $i < count( $ext ) - 1; $i++ )
$partname .= '.' . $ext[$i];
}
if( strlen( $partname ) < 1 ) {
$this->mainUploadWindowForm( wfMsgHtml( 'minlength1' ) );
return;
}
/**
* Filter out illegal characters, and try to make a legible name
* out of it. We'll strip some silently that Title would die on.
*/
$filtered = preg_replace ( "/[^".Title::legalChars()."]|:/", '-', $filtered );
$nt = Title::makeTitleSafe( NS_IMAGE, $filtered );
if( is_null( $nt ) ) {
$this->uploadError( wfMsgWikiHtml( 'illegalfilename', htmlspecialchars( $filtered ) ) );
return;
}
$this->mLocalFile = wfLocalFile( $nt );
$this->mDestName = $this->mLocalFile->getName();
/**
* If the image is protected, non-sysop users won't be able
* to modify it by uploading a new revision.
*/
if( !$nt->userCan( 'edit' ) ) {
return $this->uploadError( wfMsgWikiHtml( 'protectedpage' ) );
}
/**
* In some cases we may forbid overwriting of existing files.
*/
$overwrite = $this->checkOverwrite( $this->mDestName );
if( WikiError::isError( $overwrite ) ) {
return $this->uploadError( $overwrite->toString() );
}
/* Don't allow users to override the blacklist (check file extension) */
global $wgStrictFileExtensions;
global $wgFileExtensions, $wgFileBlacklist;
if ($finalExt == '') {
return $this->uploadError( wfMsgExt( 'filetype-missing', array ( 'parseinline' ) ) );
} elseif ( $this->checkFileExtensionList( $ext, $wgFileBlacklist ) ||
($wgStrictFileExtensions && !$this->checkFileExtension( $finalExt, $wgFileExtensions ) ) ) {
return $this->uploadError( wfMsgExt( 'filetype-badtype', array ( 'parseinline' ),
htmlspecialchars( $finalExt ), implode ( ', ', $wgFileExtensions ) ) );
}
/**
* Look at the contents of the file; if we can recognize the
* type but it's corrupt or data of the wrong type, we should
* probably not accept it.
*/
if( !$this->mStashed ) {
$this->mFileProps = File::getPropsFromPath( $this->mTempPath, $finalExt );
$this->checkMacBinary();
$veri = $this->verify( $this->mTempPath, $finalExt );
if( $veri !== true ) { //it's a wiki error...
return $this->uploadError( $veri->toString() );
}
/**
* Provide an opportunity for extensions to add further checks
*/
$error = '';
if( !wfRunHooks( 'UploadVerification',
array( $this->mDestName, $this->mTempPath, &$error ) ) ) {
return $this->uploadError( $error );
}
}
/**
* Check for non-fatal conditions
*/
if ( ! $this->mIgnoreWarning ) {
$warning = '';
global $wgCapitalLinks;
if( $wgCapitalLinks ) {
$filtered = ucfirst( $filtered );
}
if( $basename != $filtered ) {
$warning .= '
';
}
if ( !$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.
*/
return $this->uploadWarning( $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() ) {
$this->showError( $status->getWikiText() );
} else {
if ( $this->mWatchthis ) {
global $wgUser;
$wgUser->addWatch( $this->mLocalFile->getTitle() );
}
// Success, redirect to description page
//$wgOut->redirect( $this->mLocalFile->getTitle()->getFullURL() );
// Semantic Forms change - output _javascript_ to either
// fill in or append to the field in original form, and
// close the window
$basename = str_replace('_', ' ', $basename);
$output = '
END;
$wgOut->addHTML( $output );
$img = null; // @todo: added to avoid passing a ref to null - should this be defined somewhere?
wfRunHooks( 'UploadComplete', array( &$img ) );
}
}
/**
* 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;
// Check for uppercase extension. We allow these filenames but check if an image
// with lowercase extension exists already
$warning = '';
if( strpos( $file->getName(), '.' ) == false ) {
$partname = $file->getName();
$rawExtension = '';
} else {
list( $partname, $rawExtension ) = explode( '.', $file->getName(), 2 );
}
$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', $dlink ),
$file->getName(), 'right', array(), false, true );
} elseif ( !$file->allowInlineDisplay() && $file->isSafeFile() ) {
$icon = $file->iconThumb();
$dlink2 = '
';
}
}
if ( $file->wasDeleted() ) {
# If the file existed before and was deleted, warn the user of this
# Don't bother doing so if the image exists now, however
$ltitle = SpecialPage::getTitleFor( 'Log' );
$llink = $sk->makeKnownLinkObj( $ltitle, wfMsgHtml( 'deletionlog' ),
'type=delete&page=' . $file->getTitle()->getPrefixedUrl() );
$warning .= '
' . wfMsgWikiHtml( 'filewasdeleted', $llink ) . '
';
}
return $warning;
}
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 = "
$warning
";
}
}
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();
}
/**
* 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( "
" . wfMsgHtml( 'uploadwarning' ) . "
\n" );
$wgOut->addHTML( "{$error}\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( "
mInputID ) . "\" />
mDelimiter ) . "\" />
" );
}
/* -------------------------------------------------------------- */
/**
* 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 $enc= "";
if ($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("addHTML( "
Bad configuration: unknown virus scanner: $wgAntivirus
\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 new WikiError( $wgOut->parse( $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;
}
}
