<?php
+/**
+ * Backend for uploading files from a HTTP resource.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ * http://www.gnu.org/copyleft/gpl.html
+ *
+ * @file
+ * @ingroup Upload
+ */
+/**
+ * Implements uploading from a HTTP resource.
+ *
+ * @ingroup Upload
+ * @author Bryan Tong Minh
+ * @author Michael Dale
+ */
class UploadFromUrl extends UploadBase {
- protected $mTempDownloadPath;
+ protected $mAsync, $mUrl;
+ protected $mIgnoreWarnings = true;
- // by default do a SYNC_DOWNLOAD
- protected $dl_mode = Http::SYNC_DOWNLOAD;
+ protected $mTempPath, $mTmpHandle;
/**
- * Checks if the user is allowed to use the upload-by-URL feature
+ * Checks if the user is allowed to use the upload-by-URL feature. If the
+ * user is allowed, pass on permissions checking to the parent.
+ *
+ * @param $user User
+ *
+ * @return bool
*/
- static function isAllowed( $user ) {
- if( !$user->isAllowed( 'upload_by_url' ) )
+ public static function isAllowed( $user ) {
+ if ( !$user->isAllowed( 'upload_by_url' ) ) {
return 'upload_by_url';
+ }
return parent::isAllowed( $user );
}
/**
* Checks if the upload from URL feature is enabled
+ * @return bool
*/
- static function isEnabled() {
+ public static function isEnabled() {
global $wgAllowCopyUploads;
return $wgAllowCopyUploads && parent::isEnabled();
}
- /* entry point for API upload:: ASYNC_DOWNLOAD (if possible) */
- function initialize( $name, $url, $asyncdownload, $na = false ) {
- global $wgTmpDirectory, $wgPhpCli;
-
- // check for $asyncdownload request:
- if( $asyncdownload !== false){
- if( $wgPhpCli && wfShellExecEnabled() ){
- $this->dl_mode = Http::ASYNC_DOWNLOAD;
- } else {
- $this->dl_mode = Http::SYNC_DOWNLOAD;
+ /**
+ * Checks whether the URL is for an allowed host
+ *
+ * @param $url string
+ * @return bool
+ */
+ public static function isAllowedHost( $url ) {
+ global $wgCopyUploadsDomains;
+ if ( !count( $wgCopyUploadsDomains ) ) {
+ return true;
+ }
+ $parsedUrl = wfParseUrl( $url );
+ if ( !$parsedUrl ) {
+ return false;
+ }
+ $valid = false;
+ foreach( $wgCopyUploadsDomains as $domain ) {
+ if ( $parsedUrl['host'] === $domain ) {
+ $valid = true;
+ break;
}
}
+ return $valid;
+ }
- $local_file = tempnam( $wgTmpDirectory, 'WEBUPLOAD' );
- parent::initialize( $name, $local_file, 0, true );
+ /**
+ * Entry point for API upload
+ *
+ * @param $name string
+ * @param $url string
+ * @param $async mixed Whether the download should be performed
+ * asynchronous. False for synchronous, async or async-leavemessage for
+ * asynchronous download.
+ */
+ public function initialize( $name, $url, $async = false ) {
+ global $wgAllowAsyncCopyUploads;
- $this->mUrl = trim( $url );
- }
+ $this->mUrl = $url;
+ $this->mAsync = $wgAllowAsyncCopyUploads ? $async : false;
+ if ( $async ) {
+ throw new MWException( 'Asynchronous copy uploads are no longer possible as of r81612.' );
+ }
- public function isAsync(){
- return $this->dl_mode == Http::ASYNC_DOWNLOAD;
+ $tempPath = $this->mAsync ? null : $this->makeTemporaryFile();
+ # File size and removeTempFile will be filled in later
+ $this->initializePathInfo( $name, $tempPath, 0, false );
}
/**
- * Entry point for SpecialUpload no ASYNC_DOWNLOAD possible
- * @param $request Object: WebRequest object
+ * Entry point for SpecialUpload
+ * @param $request WebRequest object
*/
- function initializeFromRequest( &$request ) {
-
- // set dl mode if not set:
- if( !$this->dl_mode )
- $this->dl_mode = Http::SYNC_DOWNLOAD;
-
+ public function initializeFromRequest( &$request ) {
$desiredDestName = $request->getText( 'wpDestFile' );
- if( !$desiredDestName )
- $desiredDestName = $request->getText( 'wpUploadFile' );
- return $this->initialize(
+ if ( !$desiredDestName ) {
+ $desiredDestName = $request->getText( 'wpUploadFileURL' );
+ }
+ $this->initialize(
$desiredDestName,
- $request->getVal( 'wpUploadFileURL' ),
+ trim( $request->getVal( 'wpUploadFileURL' ) ),
false
);
}
/**
- * Do the real fetching stuff
+ * @param $request WebRequest object
+ * @return bool
+ */
+ public static function isValidRequest( $request ) {
+ global $wgUser;
+
+ $url = $request->getVal( 'wpUploadFileURL' );
+ return !empty( $url )
+ && Http::isValidURI( $url )
+ && $wgUser->isAllowed( 'upload_by_url' );
+ }
+
+ /**
+ * @return string
*/
- function fetchFile() {
- // entry point for SpecialUplaod
- if( self::isValidURI( $this->mUrl ) === false ) {
- return Status::newFatal( 'upload-proto-error' );
+ public function getSourceType() { return 'url'; }
+
+ /**
+ * @return Status
+ */
+ public function fetchFile() {
+ if ( !Http::isValidURI( $this->mUrl ) ) {
+ return Status::newFatal( 'http-invalid-url' );
}
- // now do the actual download to the target file:
- $status = Http::doDownload( $this->mUrl, $this->mTempPath, $this->dl_mode );
+ if( !self::isAllowedHost( $this->mUrl ) ) {
+ return Status::newFatal( 'upload-copy-upload-invalid-domain' );
+ }
+ if ( !$this->mAsync ) {
+ return $this->reallyFetchFile();
+ }
+ return Status::newGood();
+ }
+ /**
+ * Create a new temporary file in the URL subdirectory of wfTempDir().
+ *
+ * @return string Path to the file
+ */
+ protected function makeTemporaryFile() {
+ return tempnam( wfTempDir(), 'URL' );
+ }
+
+ /**
+ * Callback: save a chunk of the result of a HTTP request to the temporary file
+ *
+ * @param $req mixed
+ * @param $buffer string
+ * @return int number of bytes handled
+ */
+ public function saveTempFileChunk( $req, $buffer ) {
+ $nbytes = fwrite( $this->mTmpHandle, $buffer );
- // update the local filesize var:
- $this->mFileSize = filesize( $this->mTempPath );
+ if ( $nbytes == strlen( $buffer ) ) {
+ $this->mFileSize += $nbytes;
+ } else {
+ // Well... that's not good!
+ fclose( $this->mTmpHandle );
+ $this->mTmpHandle = false;
+ }
+
+ return $nbytes;
+ }
+
+ /**
+ * Download the file, save it to the temporary file and update the file
+ * size and set $mRemoveTempFile to true.
+ * @return Status
+ */
+ protected function reallyFetchFile() {
+ if ( $this->mTempPath === false ) {
+ return Status::newFatal( 'tmp-create-error' );
+ }
+
+ // Note the temporary file should already be created by makeTemporaryFile()
+ $this->mTmpHandle = fopen( $this->mTempPath, 'wb' );
+ if ( !$this->mTmpHandle ) {
+ return Status::newFatal( 'tmp-create-error' );
+ }
+
+ $this->mRemoveTempFile = true;
+ $this->mFileSize = 0;
+
+ $req = MWHttpRequest::factory( $this->mUrl, array(
+ 'followRedirects' => true
+ ) );
+ $req->setCallback( array( $this, 'saveTempFileChunk' ) );
+ $status = $req->execute();
+
+ if ( $this->mTmpHandle ) {
+ // File got written ok...
+ fclose( $this->mTmpHandle );
+ $this->mTmpHandle = null;
+ } else {
+ // We encountered a write error during the download...
+ return Status::newFatal( 'tmp-write-error' );
+ }
+
+ if ( !$status->isOk() ) {
+ return $status;
+ }
return $status;
}
/**
- * @param $request Object: WebRequest object
+ * Wrapper around the parent function in order to defer verifying the
+ * upload until the file really has been fetched.
+ * @return array|mixed
*/
- static function isValidRequest( $request ){
- if( !$request->getVal( 'wpUploadFileURL' ) )
- return false;
- // check that is a valid url:
- return self::isValidURI( $request->getVal( 'wpUploadFileURL' ) );
+ public function verifyUpload() {
+ if ( $this->mAsync ) {
+ return array( 'status' => UploadBase::OK );
+ }
+ return parent::verifyUpload();
}
/**
- * Checks that the given URI is a valid one
- * @param $uri Mixed: URI to check for validity
+ * Wrapper around the parent function in order to defer checking warnings
+ * until the file really has been fetched.
+ * @return Array
*/
- static function isValidURI( $uri ){
- return preg_match(
- '/(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?/',
- $uri,
- $matches
- );
+ public function checkWarnings() {
+ if ( $this->mAsync ) {
+ $this->mIgnoreWarnings = false;
+ return array();
+ }
+ return parent::checkWarnings();
+ }
+
+ /**
+ * Wrapper around the parent function in order to defer checking protection
+ * until we are sure that the file can actually be uploaded
+ * @return bool|mixed
+ */
+ public function verifyTitlePermissions( $user ) {
+ if ( $this->mAsync ) {
+ return true;
+ }
+ return parent::verifyTitlePermissions( $user );
+ }
+
+ /**
+ * Wrapper around the parent function in order to defer uploading to the
+ * job queue for asynchronous uploads
+ * @return Status
+ */
+ public function performUpload( $comment, $pageText, $watch, $user ) {
+ if ( $this->mAsync ) {
+ $sessionKey = $this->insertJob( $comment, $pageText, $watch, $user );
+
+ return Status::newFatal( 'async', $sessionKey );
+ }
+
+ return parent::performUpload( $comment, $pageText, $watch, $user );
+ }
+
+ /**
+ * @param $comment
+ * @param $pageText
+ * @param $watch
+ * @param $user User
+ * @return
+ */
+ protected function insertJob( $comment, $pageText, $watch, $user ) {
+ $sessionKey = $this->stashSession();
+ $job = new UploadFromUrlJob( $this->getTitle(), array(
+ 'url' => $this->mUrl,
+ 'comment' => $comment,
+ 'pageText' => $pageText,
+ 'watch' => $watch,
+ 'userName' => $user->getName(),
+ 'leaveMessage' => $this->mAsync == 'async-leavemessage',
+ 'ignoreWarnings' => $this->mIgnoreWarnings,
+ 'sessionId' => session_id(),
+ 'sessionKey' => $sessionKey,
+ ) );
+ $job->initializeSessionData();
+ $job->insert();
+ return $sessionKey;
}
-}
\ No newline at end of file
+}
dépôts / lhc / web / wiklou.git / blobdiff