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Diffstat (limited to 'lib/private/connector/sabre/file.php')
| -rw-r--r-- | lib/private/connector/sabre/file.php | 176 |
1 files changed, 176 insertions, 0 deletions
diff --git a/lib/private/connector/sabre/file.php b/lib/private/connector/sabre/file.php new file mode 100644 index 00000000000..433b1148552 --- /dev/null +++ b/lib/private/connector/sabre/file.php @@ -0,0 +1,176 @@ +<?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); + + } +} |