604 lines
17 KiB
PHP
604 lines
17 KiB
PHP
<?php
|
|
/**
|
|
* ownCloud
|
|
*
|
|
* @author Michael Gapczynski
|
|
* @copyright 2012 Michael Gapczynski mtgap@owncloud.com
|
|
*
|
|
* 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/>.
|
|
*/
|
|
|
|
namespace OC\Files\Storage;
|
|
|
|
set_include_path(get_include_path().PATH_SEPARATOR.
|
|
\OC_App::getAppPath('files_external').'/3rdparty/google-api-php-client/src');
|
|
require_once 'Google_Client.php';
|
|
require_once 'contrib/Google_DriveService.php';
|
|
|
|
class Google extends \OC\Files\Storage\Common {
|
|
|
|
private $id;
|
|
private $service;
|
|
private $driveFiles;
|
|
|
|
private static $tempFiles = array();
|
|
|
|
// Google Doc mimetypes
|
|
const FOLDER = 'application/vnd.google-apps.folder';
|
|
const DOCUMENT = 'application/vnd.google-apps.document';
|
|
const SPREADSHEET = 'application/vnd.google-apps.spreadsheet';
|
|
const DRAWING = 'application/vnd.google-apps.drawing';
|
|
const PRESENTATION = 'application/vnd.google-apps.presentation';
|
|
|
|
public function __construct($params) {
|
|
if (isset($params['configured']) && $params['configured'] === 'true'
|
|
&& isset($params['client_id']) && isset($params['client_secret'])
|
|
&& isset($params['token'])
|
|
) {
|
|
$client = new \Google_Client();
|
|
$client->setClientId($params['client_id']);
|
|
$client->setClientSecret($params['client_secret']);
|
|
$client->setScopes(array('https://www.googleapis.com/auth/drive'));
|
|
$client->setUseObjects(true);
|
|
$client->setAccessToken($params['token']);
|
|
$this->service = new \Google_DriveService($client);
|
|
$token = json_decode($params['token'], true);
|
|
$this->id = 'google::'.substr($params['client_id'], 0, 30).$token['created'];
|
|
} else {
|
|
throw new \Exception('Creating \OC\Files\Storage\Google storage failed');
|
|
}
|
|
}
|
|
|
|
public function getId() {
|
|
return $this->id;
|
|
}
|
|
|
|
/**
|
|
* Get the Google_DriveFile object for the specified path
|
|
* @param string $path
|
|
* @return string
|
|
*/
|
|
private function getDriveFile($path) {
|
|
// Remove leading and trailing slashes
|
|
$path = trim($path, '/');
|
|
if (isset($this->driveFiles[$path])) {
|
|
return $this->driveFiles[$path];
|
|
} else if ($path === '') {
|
|
$root = $this->service->files->get('root');
|
|
$this->driveFiles[$path] = $root;
|
|
return $root;
|
|
} else {
|
|
// Google Drive SDK does not have methods for retrieving files by path
|
|
// Instead we must find the id of the parent folder of the file
|
|
$parentId = $this->getDriveFile('')->getId();
|
|
$folderNames = explode('/', $path);
|
|
$path = '';
|
|
// Loop through each folder of this path to get to the file
|
|
foreach ($folderNames as $name) {
|
|
// Reconstruct path from beginning
|
|
if ($path === '') {
|
|
$path .= $name;
|
|
} else {
|
|
$path .= '/'.$name;
|
|
}
|
|
if (isset($this->driveFiles[$path])) {
|
|
$parentId = $this->driveFiles[$path]->getId();
|
|
} else {
|
|
$q = "title='".$name."' and '".$parentId."' in parents and trashed = false";
|
|
$result = $this->service->files->listFiles(array('q' => $q))->getItems();
|
|
if (!empty($result)) {
|
|
// Google Drive allows files with the same name, ownCloud doesn't
|
|
if (count($result) > 1) {
|
|
$this->onDuplicateFileDetected($path);
|
|
return false;
|
|
} else {
|
|
$file = current($result);
|
|
$this->driveFiles[$path] = $file;
|
|
$parentId = $file->getId();
|
|
}
|
|
} else {
|
|
// Google Docs have no extension in their title, so try without extension
|
|
$pos = strrpos($path, '.');
|
|
if ($pos !== false) {
|
|
$pathWithoutExt = substr($path, 0, $pos);
|
|
$file = $this->getDriveFile($pathWithoutExt);
|
|
if ($file) {
|
|
// Switch cached Google_DriveFile to the correct index
|
|
unset($this->driveFiles[$pathWithoutExt]);
|
|
$this->driveFiles[$path] = $file;
|
|
$parentId = $file->getId();
|
|
} else {
|
|
return false;
|
|
}
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return $this->driveFiles[$path];
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set the Google_DriveFile object in the cache
|
|
* @param string $path
|
|
* @param Google_DriveFile|false $file
|
|
*/
|
|
private function setDriveFile($path, $file) {
|
|
$path = trim($path, '/');
|
|
$this->driveFiles[$path] = $file;
|
|
if ($file === false) {
|
|
// Set all child paths as false
|
|
$len = strlen($path);
|
|
foreach ($this->driveFiles as $key => $file) {
|
|
if (substr($key, 0, $len) === $path) {
|
|
$this->driveFiles[$key] = false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Write a log message to inform about duplicate file names
|
|
* @param string $path
|
|
*/
|
|
private function onDuplicateFileDetected($path) {
|
|
$about = $this->service->about->get();
|
|
$user = $about->getName();
|
|
\OCP\Util::writeLog('files_external',
|
|
'Ignoring duplicate file name: '.$path.' on Google Drive for Google user: '.$user,
|
|
\OCP\Util::INFO
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Generate file extension for a Google Doc, choosing Open Document formats for download
|
|
* @param string $mimetype
|
|
* @return string
|
|
*/
|
|
private function getGoogleDocExtension($mimetype) {
|
|
if ($mimetype === self::DOCUMENT) {
|
|
return 'odt';
|
|
} else if ($mimetype === self::SPREADSHEET) {
|
|
return 'ods';
|
|
} else if ($mimetype === self::DRAWING) {
|
|
return 'jpg';
|
|
} else if ($mimetype === self::PRESENTATION) {
|
|
// Download as .odp is not available
|
|
return 'pdf';
|
|
} else {
|
|
return '';
|
|
}
|
|
}
|
|
|
|
public function mkdir($path) {
|
|
if (!$this->is_dir($path)) {
|
|
$parentFolder = $this->getDriveFile(dirname($path));
|
|
if ($parentFolder) {
|
|
$folder = new \Google_DriveFile();
|
|
$folder->setTitle(basename($path));
|
|
$folder->setMimeType(self::FOLDER);
|
|
$parent = new \Google_ParentReference();
|
|
$parent->setId($parentFolder->getId());
|
|
$folder->setParents(array($parent));
|
|
$result = $this->service->files->insert($folder);
|
|
if ($result) {
|
|
$this->setDriveFile($path, $result);
|
|
}
|
|
return (bool)$result;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function rmdir($path) {
|
|
if (!$this->isDeletable($path)) {
|
|
return false;
|
|
}
|
|
if (trim($path, '/') === '') {
|
|
$dir = $this->opendir($path);
|
|
if(is_resource($dir)) {
|
|
while (($file = readdir($dir)) !== false) {
|
|
if (!\OC\Files\Filesystem::isIgnoredDir($file)) {
|
|
if (!$this->unlink($path.'/'.$file)) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
closedir($dir);
|
|
}
|
|
$this->driveFiles = array();
|
|
return true;
|
|
} else {
|
|
return $this->unlink($path);
|
|
}
|
|
}
|
|
|
|
public function opendir($path) {
|
|
// Remove leading and trailing slashes
|
|
$path = trim($path, '/');
|
|
$folder = $this->getDriveFile($path);
|
|
if ($folder) {
|
|
$files = array();
|
|
$duplicates = array();
|
|
$pageToken = true;
|
|
while ($pageToken) {
|
|
$params = array();
|
|
if ($pageToken !== true) {
|
|
$params['pageToken'] = $pageToken;
|
|
}
|
|
$params['q'] = "'".$folder->getId()."' in parents and trashed = false";
|
|
$children = $this->service->files->listFiles($params);
|
|
foreach ($children->getItems() as $child) {
|
|
$name = $child->getTitle();
|
|
// Check if this is a Google Doc i.e. no extension in name
|
|
if ($child->getFileExtension() === ''
|
|
&& $child->getMimeType() !== self::FOLDER
|
|
) {
|
|
$name .= '.'.$this->getGoogleDocExtension($child->getMimeType());
|
|
}
|
|
if ($path === '') {
|
|
$filepath = $name;
|
|
} else {
|
|
$filepath = $path.'/'.$name;
|
|
}
|
|
// Google Drive allows files with the same name, ownCloud doesn't
|
|
// Prevent opendir() from returning any duplicate files
|
|
$key = array_search($name, $files);
|
|
if ($key !== false || isset($duplicates[$filepath])) {
|
|
if (!isset($duplicates[$filepath])) {
|
|
$duplicates[$filepath] = true;
|
|
$this->setDriveFile($filepath, false);
|
|
unset($files[$key]);
|
|
$this->onDuplicateFileDetected($filepath);
|
|
}
|
|
} else {
|
|
// Cache the Google_DriveFile for future use
|
|
$this->setDriveFile($filepath, $child);
|
|
$files[] = $name;
|
|
}
|
|
}
|
|
$pageToken = $children->getNextPageToken();
|
|
}
|
|
\OC\Files\Stream\Dir::register('google'.$path, $files);
|
|
return opendir('fakedir://google'.$path);
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
public function stat($path) {
|
|
$file = $this->getDriveFile($path);
|
|
if ($file) {
|
|
$stat = array();
|
|
if ($this->filetype($path) === 'dir') {
|
|
$stat['size'] = 0;
|
|
} else {
|
|
// Check if this is a Google Doc
|
|
if ($this->getMimeType($path) !== $file->getMimeType()) {
|
|
// Return unknown file size
|
|
$stat['size'] = \OCP\Files\FileInfo::SPACE_UNKNOWN;
|
|
} else {
|
|
$stat['size'] = $file->getFileSize();
|
|
}
|
|
}
|
|
$stat['atime'] = strtotime($file->getLastViewedByMeDate());
|
|
$stat['mtime'] = strtotime($file->getModifiedDate());
|
|
$stat['ctime'] = strtotime($file->getCreatedDate());
|
|
return $stat;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
public function filetype($path) {
|
|
if ($path === '') {
|
|
return 'dir';
|
|
} else {
|
|
$file = $this->getDriveFile($path);
|
|
if ($file) {
|
|
if ($file->getMimeType() === self::FOLDER) {
|
|
return 'dir';
|
|
} else {
|
|
return 'file';
|
|
}
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
public function isUpdatable($path) {
|
|
$file = $this->getDriveFile($path);
|
|
if ($file) {
|
|
return $file->getEditable();
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
public function file_exists($path) {
|
|
return (bool)$this->getDriveFile($path);
|
|
}
|
|
|
|
public function unlink($path) {
|
|
$file = $this->getDriveFile($path);
|
|
if ($file) {
|
|
$result = $this->service->files->trash($file->getId());
|
|
if ($result) {
|
|
$this->setDriveFile($path, false);
|
|
}
|
|
return (bool)$result;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
public function rename($path1, $path2) {
|
|
$file = $this->getDriveFile($path1);
|
|
if ($file) {
|
|
if (dirname($path1) === dirname($path2)) {
|
|
$file->setTitle(basename(($path2)));
|
|
} else {
|
|
// Change file parent
|
|
$parentFolder2 = $this->getDriveFile(dirname($path2));
|
|
if ($parentFolder2) {
|
|
$parent = new \Google_ParentReference();
|
|
$parent->setId($parentFolder2->getId());
|
|
$file->setParents(array($parent));
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
$result = $this->service->files->patch($file->getId(), $file);
|
|
if ($result) {
|
|
$this->setDriveFile($path1, false);
|
|
$this->setDriveFile($path2, $result);
|
|
}
|
|
return (bool)$result;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
public function fopen($path, $mode) {
|
|
$pos = strrpos($path, '.');
|
|
if ($pos !== false) {
|
|
$ext = substr($path, $pos);
|
|
} else {
|
|
$ext = '';
|
|
}
|
|
switch ($mode) {
|
|
case 'r':
|
|
case 'rb':
|
|
$file = $this->getDriveFile($path);
|
|
if ($file) {
|
|
$exportLinks = $file->getExportLinks();
|
|
$mimetype = $this->getMimeType($path);
|
|
$downloadUrl = null;
|
|
if ($exportLinks && isset($exportLinks[$mimetype])) {
|
|
$downloadUrl = $exportLinks[$mimetype];
|
|
} else {
|
|
$downloadUrl = $file->getDownloadUrl();
|
|
}
|
|
if (isset($downloadUrl)) {
|
|
$request = new \Google_HttpRequest($downloadUrl, 'GET', null, null);
|
|
$httpRequest = \Google_Client::$io->authenticatedRequest($request);
|
|
if ($httpRequest->getResponseHttpCode() == 200) {
|
|
$tmpFile = \OC_Helper::tmpFile($ext);
|
|
$data = $httpRequest->getResponseBody();
|
|
file_put_contents($tmpFile, $data);
|
|
return fopen($tmpFile, $mode);
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
case 'w':
|
|
case 'wb':
|
|
case 'a':
|
|
case 'ab':
|
|
case 'r+':
|
|
case 'w+':
|
|
case 'wb+':
|
|
case 'a+':
|
|
case 'x':
|
|
case 'x+':
|
|
case 'c':
|
|
case 'c+':
|
|
$tmpFile = \OC_Helper::tmpFile($ext);
|
|
\OC\Files\Stream\Close::registerCallback($tmpFile, array($this, 'writeBack'));
|
|
if ($this->file_exists($path)) {
|
|
$source = $this->fopen($path, 'rb');
|
|
file_put_contents($tmpFile, $source);
|
|
}
|
|
self::$tempFiles[$tmpFile] = $path;
|
|
return fopen('close://'.$tmpFile, $mode);
|
|
}
|
|
}
|
|
|
|
public function writeBack($tmpFile) {
|
|
if (isset(self::$tempFiles[$tmpFile])) {
|
|
$path = self::$tempFiles[$tmpFile];
|
|
$parentFolder = $this->getDriveFile(dirname($path));
|
|
if ($parentFolder) {
|
|
// TODO Research resumable upload
|
|
$mimetype = \OC_Helper::getMimeType($tmpFile);
|
|
$data = file_get_contents($tmpFile);
|
|
$params = array(
|
|
'data' => $data,
|
|
'mimeType' => $mimetype,
|
|
);
|
|
$result = false;
|
|
if ($this->file_exists($path)) {
|
|
$file = $this->getDriveFile($path);
|
|
$result = $this->service->files->update($file->getId(), $file, $params);
|
|
} else {
|
|
$file = new \Google_DriveFile();
|
|
$file->setTitle(basename($path));
|
|
$file->setMimeType($mimetype);
|
|
$parent = new \Google_ParentReference();
|
|
$parent->setId($parentFolder->getId());
|
|
$file->setParents(array($parent));
|
|
$result = $this->service->files->insert($file, $params);
|
|
}
|
|
if ($result) {
|
|
$this->setDriveFile($path, $result);
|
|
}
|
|
}
|
|
unlink($tmpFile);
|
|
}
|
|
}
|
|
|
|
public function getMimeType($path) {
|
|
$file = $this->getDriveFile($path);
|
|
if ($file) {
|
|
$mimetype = $file->getMimeType();
|
|
// Convert Google Doc mimetypes, choosing Open Document formats for download
|
|
if ($mimetype === self::FOLDER) {
|
|
return 'httpd/unix-directory';
|
|
} else if ($mimetype === self::DOCUMENT) {
|
|
return 'application/vnd.oasis.opendocument.text';
|
|
} else if ($mimetype === self::SPREADSHEET) {
|
|
return 'application/x-vnd.oasis.opendocument.spreadsheet';
|
|
} else if ($mimetype === self::DRAWING) {
|
|
return 'image/jpeg';
|
|
} else if ($mimetype === self::PRESENTATION) {
|
|
// Download as .odp is not available
|
|
return 'application/pdf';
|
|
} else {
|
|
return $mimetype;
|
|
}
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
public function free_space($path) {
|
|
$about = $this->service->about->get();
|
|
return $about->getQuotaBytesTotal() - $about->getQuotaBytesUsed();
|
|
}
|
|
|
|
public function touch($path, $mtime = null) {
|
|
$file = $this->getDriveFile($path);
|
|
$result = false;
|
|
if ($file) {
|
|
if (isset($mtime)) {
|
|
$file->setModifiedDate($mtime);
|
|
$result = $this->service->files->patch($file->getId(), $file, array(
|
|
'setModifiedDate' => true,
|
|
));
|
|
} else {
|
|
$result = $this->service->files->touch($file->getId());
|
|
}
|
|
} else {
|
|
$parentFolder = $this->getDriveFile(dirname($path));
|
|
if ($parentFolder) {
|
|
$file = new \Google_DriveFile();
|
|
$file->setTitle(basename($path));
|
|
$parent = new \Google_ParentReference();
|
|
$parent->setId($parentFolder->getId());
|
|
$file->setParents(array($parent));
|
|
$result = $this->service->files->insert($file);
|
|
}
|
|
}
|
|
if ($result) {
|
|
$this->setDriveFile($path, $result);
|
|
}
|
|
return (bool)$result;
|
|
}
|
|
|
|
public function test() {
|
|
if ($this->free_space('')) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
public function hasUpdated($path, $time) {
|
|
$appConfig = \OC::$server->getAppConfig();
|
|
if ($this->is_file($path)) {
|
|
return parent::hasUpdated($path, $time);
|
|
} else {
|
|
// Google Drive doesn't change modified times of folders when files inside are updated
|
|
// Instead we use the Changes API to see if folders have been updated, and it's a pain
|
|
$folder = $this->getDriveFile($path);
|
|
if ($folder) {
|
|
$result = false;
|
|
$folderId = $folder->getId();
|
|
$startChangeId = $appConfig->getValue('files_external', $this->getId().'cId');
|
|
$params = array(
|
|
'includeDeleted' => true,
|
|
'includeSubscribed' => true,
|
|
);
|
|
if (isset($startChangeId)) {
|
|
$startChangeId = (int)$startChangeId;
|
|
$largestChangeId = $startChangeId;
|
|
$params['startChangeId'] = $startChangeId + 1;
|
|
} else {
|
|
$largestChangeId = 0;
|
|
}
|
|
$pageToken = true;
|
|
while ($pageToken) {
|
|
if ($pageToken !== true) {
|
|
$params['pageToken'] = $pageToken;
|
|
}
|
|
$changes = $this->service->changes->listChanges($params);
|
|
if ($largestChangeId === 0 || $largestChangeId === $startChangeId) {
|
|
$largestChangeId = $changes->getLargestChangeId();
|
|
}
|
|
if (isset($startChangeId)) {
|
|
// Check if a file in this folder has been updated
|
|
// There is no way to filter by folder at the API level...
|
|
foreach ($changes->getItems() as $change) {
|
|
$file = $change->getFile();
|
|
if ($file) {
|
|
foreach ($file->getParents() as $parent) {
|
|
if ($parent->getId() === $folderId) {
|
|
$result = true;
|
|
// Check if there are changes in different folders
|
|
} else if ($change->getId() <= $largestChangeId) {
|
|
// Decrement id so this change is fetched when called again
|
|
$largestChangeId = $change->getId();
|
|
$largestChangeId--;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
$pageToken = $changes->getNextPageToken();
|
|
} else {
|
|
// Assuming the initial scan just occurred and changes are negligible
|
|
break;
|
|
}
|
|
}
|
|
$appConfig->setValue('files_external', $this->getId().'cId', $largestChangeId);
|
|
return $result;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* check if curl is installed
|
|
*/
|
|
public static function checkDependencies() {
|
|
if (function_exists('curl_init')) {
|
|
return true;
|
|
} else {
|
|
return array('curl');
|
|
}
|
|
}
|
|
|
|
}
|