2e2c089898
rename UploadBase::initialize to UploadBase::initializeFileInfo Each sub-class implements initialize() with a different prototype. Only two sub-classes actually use the parent initialize().
137 lines
3.4 KiB
PHP
137 lines
3.4 KiB
PHP
<?php
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/**
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* @file
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* @ingroup upload
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*
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* Implements uploading from a HTTP resource.
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*
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* @author Bryan Tong Minh
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* @author Michael Dale
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*/
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class UploadFromUrl extends UploadBase {
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protected $mTempDownloadPath;
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/**
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* Checks if the user is allowed to use the upload-by-URL feature. If the
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* user is allowed, pass on permissions checking to the parent.
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*/
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public static function isAllowed( $user ) {
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if( !$user->isAllowed( 'upload_by_url' ) )
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return 'upload_by_url';
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return parent::isAllowed( $user );
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}
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/**
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* Checks if the upload from URL feature is enabled
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*/
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public static function isEnabled() {
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global $wgAllowCopyUploads;
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return $wgAllowCopyUploads && parent::isEnabled();
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}
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/**
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* Entry point for API upload
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*/
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public function initialize( $name, $url, $na, $nb = false ) {
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global $wgTmpDirectory;
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$localFile = tempnam( $wgTmpDirectory, 'WEBUPLOAD' );
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$this->initializePathInfo( $name, $localFile, 0, true );
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$this->mUrl = trim( $url );
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}
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/**
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* Entry point for SpecialUpload
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* @param $request Object: WebRequest object
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*/
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public function initializeFromRequest( &$request ) {
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$desiredDestName = $request->getText( 'wpDestFile' );
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if( !$desiredDestName )
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$desiredDestName = $request->getText( 'wpUploadFileURL' );
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return $this->initialize(
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$desiredDestName,
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$request->getVal( 'wpUploadFileURL' ),
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false
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);
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}
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/**
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* @param $request Object: WebRequest object
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*/
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public static function isValidRequest( $request ){
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if( !$request->getVal( 'wpUploadFileURL' ) )
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return false;
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// check that is a valid url:
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return self::isValidUrl( $request->getVal( 'wpUploadFileURL' ) );
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}
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public static function isValidUrl( $url ) {
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// Only allow HTTP or FTP for now
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return (bool)preg_match( '!^(http://|ftp://)!', $url );
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}
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/**
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* Do the real fetching stuff
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*/
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function fetchFile() {
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if( !self::isValidUrl( $this->mUrl ) ) {
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return Status::newFatal( 'upload-proto-error' );
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}
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$res = $this->curlCopy();
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if( $res !== true ) {
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return Status::newFatal( $res );
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}
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return Status::newGood();
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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() {
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global $wgOut;
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# Open temporary file
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$this->mCurlDestHandle = @fopen( $this->mTempPath, "wb" );
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if( $this->mCurlDestHandle === false ) {
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# Could not open temporary file to write in
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return 'upload-file-error';
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}
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$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, $this->mUrl);
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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 );
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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( $error )
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return "upload-curl-error$errornum";
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return true;
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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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