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<?php
/**
* ownCloud
*
* @author Jakob Sack
* @copyright 2011 Jakob Sack kde@jakobsack.de
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
* License as published by the Free Software Foundation; either
* version 3 of the License, or any later version.
*
* This library 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 AFFERO GENERAL PUBLIC LICENSE for more details.
*
* You should have received a copy of the GNU Affero General Public
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
*
*/
class OC_Connector_Sabre_File extends OC_Connector_Sabre_Node implements Sabre_DAV_IFile {
/**
* Updates the data
*
* The data argument is a readable stream resource.
*
* After a succesful put operation, you may choose to return an ETag. The
* etag must always be surrounded by double-quotes. These quotes must
* appear in the actual string you're returning.
*
* Clients may use the ETag from a PUT request to later on make sure that
* when they update the file, the contents haven't changed in the mean
* time.
*
* If you don't plan to store the file byte-by-byte, and you return a
* different object on a subsequent GET you are strongly recommended to not
* return an ETag, and just return null.
*
* @param resource $data
* @throws Sabre_DAV_Exception_Forbidden
* @return string|null
*/
public function put($data) {
if (!\OC\Files\Filesystem::isUpdatable($this->path)) {
throw new \Sabre_DAV_Exception_Forbidden();
}
// throw an exception if encryption was disabled but the files are still encrypted
if (\OC_Util::encryptedFiles()) {
throw new \Sabre_DAV_Exception_ServiceUnavailable();
}
// mark file as partial while uploading (ignored by the scanner)
$partpath = $this->path . '.part';
\OC\Files\Filesystem::file_put_contents($partpath, $data);
//detect aborted upload
if (isset ($_SERVER['REQUEST_METHOD']) && $_SERVER['REQUEST_METHOD'] === 'PUT') {
if (isset($_SERVER['CONTENT_LENGTH'])) {
$expected = $_SERVER['CONTENT_LENGTH'];
$actual = \OC\Files\Filesystem::filesize($partpath);
if ($actual != $expected) {
\OC\Files\Filesystem::unlink($partpath);
throw new Sabre_DAV_Exception_BadRequest(
'expected filesize ' . $expected . ' got ' . $actual);
}
}
}
// rename to correct path
$renameOkay = \OC\Files\Filesystem::rename($partpath, $this->path);
$fileExists = \OC\Files\Filesystem::file_exists($this->path);
if ($renameOkay === false || $fileExists === false) {
\OC_Log::write('webdav', '\OC\Files\Filesystem::rename() failed', \OC_Log::ERROR);
\OC\Files\Filesystem::unlink($partpath);
throw new Sabre_DAV_Exception();
}
//allow sync clients to send the mtime along in a header
$mtime = OC_Request::hasModificationTime();
if ($mtime !== false) {
if (\OC\Files\Filesystem::touch($this->path, $mtime)) {
header('X-OC-MTime: accepted');
}
}
return OC_Connector_Sabre_Node::getETagPropertyForPath($this->path);
}
/**
* Returns the data
*
* @return string
*/
public function get() {
//throw execption if encryption is disabled but files are still encrypted
if (\OC_Util::encryptedFiles()) {
throw new \Sabre_DAV_Exception_ServiceUnavailable();
} else {
return \OC\Files\Filesystem::fopen($this->path, 'rb');
}
}
/**
* Delete the current file
*
* @return void
* @throws Sabre_DAV_Exception_Forbidden
*/
public function delete() {
if (!\OC\Files\Filesystem::isDeletable($this->path)) {
throw new \Sabre_DAV_Exception_Forbidden();
}
\OC\Files\Filesystem::unlink($this->path);
}
/**
* Returns the size of the node, in bytes
*
* @return int
*/
public function getSize() {
$this->getFileinfoCache();
if ($this->fileinfo_cache['size'] > -1) {
return $this->fileinfo_cache['size'];
} else {
return null;
}
}
/**
* Returns the ETag for a file
*
* An ETag is a unique identifier representing the current version of the
* file. If the file changes, the ETag MUST change. The ETag is an
* arbritrary string, but MUST be surrounded by double-quotes.
*
* Return null if the ETag can not effectively be determined
*
* @return mixed
*/
public function getETag() {
$properties = $this->getProperties(array(self::GETETAG_PROPERTYNAME));
if (isset($properties[self::GETETAG_PROPERTYNAME])) {
return $properties[self::GETETAG_PROPERTYNAME];
}
return null;
}
/**
* Returns the mime-type for a file
*
* If null is returned, we'll assume application/octet-stream
*
* @return mixed
*/
public function getContentType() {
if (isset($this->fileinfo_cache['mimetype'])) {
return $this->fileinfo_cache['mimetype'];
}
return \OC\Files\Filesystem::getMimeType($this->path);
}
}
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