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GoogleDriveAdapter.php
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GoogleDriveAdapter.php
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<?php
namespace Masbug\Flysystem;
use Google_Service_Drive;
use Google_Service_Drive_DriveFile;
use Google_Service_Drive_FileList;
use Google_Service_Drive_Permission;
use GuzzleHttp\Psr7;
use League\Flysystem\Adapter\AbstractAdapter;
use League\Flysystem\AdapterInterface;
use League\Flysystem\Config;
use League\Flysystem\FileNotFoundException;
use League\Flysystem\Util;
use Psr\Http\Message\RequestInterface;
use Psr\Http\Message\StreamInterface;
define('DEBUG_ME', false);
class GoogleDriveAdapter extends AbstractAdapter
{
/**
* Maximum size of upload content before switching from "one shot" mode to "chunked upload"
*
* @var int
*/
const MAX_CHUNK_SIZE = 100 * 1024 * 1024;
/**
* Minimum time [s] before allowing already cached file object to be refreshed
*
* @var int
*/
const FILE_OBJECT_MINIMUM_VALID_TIME = 10;
/**
* Fetch fields setting for list
*
* @var string
*/
const FETCHFIELDS_LIST = 'files(id,mimeType,createdTime,modifiedTime,name,parents,permissions,size,webContentLink),nextPageToken';
/**
* Fetch fields setting for get
*
* @var string
*/
const FETCHFIELDS_GET = 'id,name,mimeType,createdTime,modifiedTime,parents,permissions,size,webContentLink,webViewLink';
/**
* MIME tyoe of directory
*
* @var string
*/
const DIRMIME = 'application/vnd.google-apps.folder';
/**
* Google_Service_Drive instance
*
* @var Google_Service_Drive
*/
protected $service;
/**
* Default options
*
* @var array
*/
protected static $defaultOptions = [
'spaces' => 'drive',
'useHasDir' => false,
'useDisplayPaths' => true,
'publishPermission' => [
'type' => 'anyone',
'role' => 'reader',
'withLink' => true
],
'appsExportMap' => [
'application/vnd.google-apps.document' => 'application/vnd.openxmlformats-officedocument.wordprocessingml.document',
'application/vnd.google-apps.spreadsheet' => 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
'application/vnd.google-apps.drawing' => 'application/pdf',
'application/vnd.google-apps.presentation' => 'application/vnd.openxmlformats-officedocument.presentationml.presentation',
'application/vnd.google-apps.script' => 'application/vnd.google-apps.script+json',
'default' => 'application/pdf'
],
'parameters' => [],
'teamDriveId' => null,
'sanitize_chars' => [
// sanitize filename
// file system reserved https://en.wikipedia.org/wiki/Filename#Reserved_characters_and_words
// control characters http://msdn.microsoft.com/en-us/library/windows/desktop/aa365247%28v=vs.85%29.aspx
// non-printing characters DEL, NO-BREAK SPACE, SOFT HYPHEN
// URI reserved https://tools.ietf.org/html/rfc3986#section-2.2
// URL unsafe characters https://www.ietf.org/rfc/rfc1738.txt
// must not allow
'/', '\\', '?', '%', '*', ':', '|', '"', '<', '>',
'\x00', '\x01', '\x02', '\x03', '\x04', '\x05', '\x06', '\x07', '\x08', '\x09', '\x0A', '\x0B', '\x0C', '\x0D', '\x0E', '\x0F',
'\x10', '\x11', '\x12', '\x13', '\x14', '\x15', '\x16', '\x17', '\x18', '\x19', '\x1A', '\x1B', '\x1C', '\x1D', '\x1E', '\x1F',
'\x7F', '\xA0', '\xAD',
// optional
'#', '@', '!', '$', '&', '\'', '+', ';', '=',
'^', '~', '`',
],
'sanitize_replacement_char' => '_'
];
/**
* A comma-separated list of spaces to query
* Supported values are 'drive', 'appDataFolder' and 'photos'
*
* @var string
*/
protected $spaces;
/**
* Root path
*
* @var string
*/
protected $root;
/**
* Permission array as published item
*
* @var array
*/
protected $publishPermission;
/**
* Cache of file objects
*
* @var array
*/
private $cacheFileObjects = [];
/**
* Cache of hasDir
*
* @var array
*/
private $cacheHasDirs = [];
/**
* Use hasDir function
*
* @var bool
*/
private $useHasDir = false;
/**
* Options array
*
* @var array
*/
private $options = [];
/**
* Using display paths instead of virtual IDs
*
* @var bool
*/
private $useDisplayPaths = true;
/**
* Resolved root ID
*
* @var string
*/
private $rootId = null;
/**
* Full path => virtual ID cache
*
* @var array
*/
private $cachedPaths = [];
/**
* Recent virtual ID => file object requests cache
*
* @var array
*/
private $requestedIds = [];
/**
* @var array Optional parameters sent with each request (see Google_Service_Resource var stackParameters and https://developers.google.com/analytics/devguides/reporting/core/v4/parameters)
*/
private $optParams = [];
/**
* GoogleDriveAdapter constructor.
* @param Google_Service_Drive $service
* @param string|null $root
* @param array $options
*/
public function __construct(Google_Service_Drive $service, $root = null, $options = [])
{
$this->service = $service;
$this->options = array_replace_recursive(static::$defaultOptions, $options);
$this->spaces = $this->options['spaces'];
$this->useHasDir = $this->options['useHasDir'];
$this->publishPermission = $this->options['publishPermission'];
$this->useDisplayPaths = $this->options['useDisplayPaths'];
$this->optParams = $this->cleanOptParameters($this->options['parameters']);
if ($root !== null) {
$root = trim($root, '/');
if ($root === '') {
$root = null;
}
}
if (isset($this->options['teamDriveId'])) {
$this->root = null;
$this->setTeamDriveId($this->options['teamDriveId']);
if ($this->useDisplayPaths && $root !== null) {
// get real root id
$this->root = $this->toSingleVirtualPath($root, false, true, true, true);
// reset cache
$this->rootId = $this->root;
$this->clearCache();
}
} else {
if (!$this->useDisplayPaths || $root === null) {
if ($root === null) {
$root = 'root';
}
$this->root = $root;
$this->setPathPrefix('');
} else {
$this->root = 'root';
$this->setPathPrefix('');
// get real root id
$this->root = $this->toSingleVirtualPath($root, false, true, true, true);
// reset cache
$this->rootId = $this->root;
$this->clearCache();
}
}
}
/**
* Allow to forcefully clear the cache to enable long running process
*
* @return void
*/
public function clearCache()
{
$this->cachedPaths = [];
$this->requestedIds = [];
$this->cacheFileObjects = [];
$this->cacheHasDirs = [];
}
protected function cleanOptParameters($parameters)
{
$operations = ['files.copy', 'files.create', 'files.delete',
'files.trash', 'files.get', 'files.list', 'files.update',
'files.watch'];
$clean = [];
foreach ($operations as $operation) {
$clean[$operation] = [];
if (isset($parameters[$operation])) {
$clean[$operation] = $parameters[$operation];
}
}
foreach ($parameters as $key => $value) {
if (in_array($key, $operations)) {
unset($parameters[$key]);
}
}
foreach ($operations as $operation) {
$clean[$operation] = array_merge_recursive($parameters, $clean[$operation]);
}
return $clean;
}
/**
* {@inheritdoc}
*/
public function write($path, $contents, Config $config)
{
$updating = null;
if ($this->useDisplayPaths) {
try {
$virtual_path = $this->toVirtualPath($path, true, false);
$updating = true; // destination exists
} catch (FileNotFoundException $e) {
$updating = false;
[$parentDir, $fileName] = $this->splitPath($path, false);
$virtual_path = $this->toSingleVirtualPath($parentDir, false, true, true, true);
if ($virtual_path === '') {
$virtual_path = $fileName;
} else {
$virtual_path .= '/'.$fileName;
}
}
if ($updating && is_array($virtual_path)) {
// multiple destinations with the same display path -> remove all but the first created & the first gets replaced
if (count($virtual_path) > 1) {
// delete all but first
$this->delete_by_id(
array_map(
function ($p) {
return $this->splitPath($p, false)[1];
},
array_slice($virtual_path, 1)
)
);
}
$virtual_path = $virtual_path[0];
}
} else {
$virtual_path = $path;
}
return $this->upload($virtual_path, $contents, $config, $updating);
}
/**
* {@inheritdoc}
*/
public function writeStream($path, $resource, Config $config)
{
return $this->write($path, $resource, $config);
}
/**
* {@inheritdoc}
*/
public function update($path, $contents, Config $config)
{
return $this->write($path, $contents, $config);
}
/**
* {@inheritdoc}
*/
public function updateStream($path, $resource, Config $config)
{
return $this->write($path, $resource, $config);
}
/**
* {@inheritdoc}
*/
public function rename($path, $newpath)
{
if ($this->useDisplayPaths) {
$path = $this->toVirtualPath($path, true, true);
$newpathDir = self::dirname($newpath);
try {
$toPath = $this->toVirtualPath($newpathDir, false, true);
} catch (FileNotFoundException $e) {
if ($this->createDir($newpathDir, new Config(), true) === false) {
return false;
}
$toPath = $this->toVirtualPath($newpathDir, false, true);
}
if ($toPath === '') {
$toPath = $this->root;
}
[$oldParent, $fileId] = $this->splitPath($path);
$newParent = $toPath;
$newName = basename($newpath);
} else {
[$oldParent, $fileId] = $this->splitPath($path);
[$newParent, $newName] = $this->splitPath($newpath);
}
$file = new Google_Service_Drive_DriveFile();
$file->setName($newName);
$opts = [
'fields' => self::FETCHFIELDS_GET
];
if ($newParent !== $oldParent) {
$opts['addParents'] = $newParent;
if ($oldParent !== '') {
$opts['removeParents'] = $oldParent;
}
}
$updatedFile = $this->service->files->update($fileId, $file, $this->applyDefaultParams($opts, 'files.update'));
if ($updatedFile) {
$id = $updatedFile->getId();
if (isset($this->cacheHasDirs[$fileId])) {
$this->cacheHasDirs[$id] = $this->cacheHasDirs[$fileId];
}
$this->uncacheId($fileId);
$this->cacheFileObjects[$id] = $updatedFile;
$this->cacheObjects([$id => $updatedFile]);
$this->resetRequest([$oldParent, $newParent, $fileId, $id]);
return true;
}
return false;
}
/**
* {@inheritdoc}
*/
public function copy($path, $newpath)
{
if ($this->useDisplayPaths) {
$srcId = $this->toVirtualPath($path, false, true);
$newpathDir = self::dirname($newpath);
$toPath = $this->toSingleVirtualPath($newpathDir, false, false, true, true);
if ($toPath === false) {
return false;
}
if ($toPath === '') {
$toPath = $this->root;
}
$newParentId = $toPath;
$fileName = basename($newpath);
} else {
[, $srcId] = $this->splitPath($path);
[$newParentId, $fileName] = $this->splitPath($newpath);
}
$file = new Google_Service_Drive_DriveFile();
$file->setName($fileName);
$file->setParents([
$newParentId
]);
$newFile = $this->service->files->copy($srcId, $file, $this->applyDefaultParams([
'fields' => self::FETCHFIELDS_GET
], 'files.copy'));
if ($newFile instanceof Google_Service_Drive_DriveFile) {
$id = $newFile->getId();
$this->cacheFileObjects[$id] = $newFile;
$this->cacheObjects([$id => $newFile]);
if (isset($this->cacheHasDirs[$srcId])) {
$this->cacheHasDirs[$id] = $this->cacheHasDirs[$srcId];
}
if ($this->getRawVisibility($srcId) === AdapterInterface::VISIBILITY_PUBLIC) {
$this->publish($id);
} else {
$this->unPublish($id);
}
$this->resetRequest([$id, $newParentId]);
return true;
}
return false;
}
/**
* @param string[]|string $ids
* @return bool
*/
protected function delete_by_id($ids)
{
$deleted = false;
if (!is_array($ids)) {
$ids = [$ids];
}
foreach ($ids as $id) {
if ($id !== '' && ($file = $this->getFileObject($id))) {
if (($parents = $file->getParents())) {
$file = new Google_Service_Drive_DriveFile();
$file->setTrashed(true);
if ($this->service->files->update($id, $file, $this->applyDefaultParams([], 'files.update'))) {
$this->uncacheId($id);
$deleted = true;
}
}
}
}
return $deleted;
}
/**
* {@inheritdoc}
*/
public function delete($path)
{
if ($path === '' || $path === '/') {
return false;
} // do not allow deleting root...
$deleted = false;
if ($this->useDisplayPaths) {
try {
$ids = $this->toVirtualPath($path, false);
$deleted = $this->delete_by_id($ids);
} catch (\Exception $e) {
}
} else {
if (($file = $this->getFileObject($path))) {
[$parentId, $id] = $this->splitPath($path);
if (($parents = $file->getParents())) {
$file = new Google_Service_Drive_DriveFile();
$opts = [];
if (count($parents) > 1) {
$opts['removeParents'] = $parentId;
} else {
$file->setTrashed(true);
}
if ($this->service->files->update($id, $file, $this->applyDefaultParams($opts, 'files.update'))) {
$this->uncacheId($id);
$deleted = true;
}
}
}
}
if ($deleted) {
$this->resetRequest('', true);
}
return $deleted;
}
/**
* {@inheritdoc}
*/
public function deleteDir($dirname)
{
return $this->delete($dirname);
}
/**
* {@inheritdoc}
*/
public function createDir($dirname, Config $config, $internalCall = false)
{
try {
$meta = $this->getMetadata($dirname);
} catch (FileNotFoundException $e) {
$meta = false;
}
if ($meta !== false) {
return [
'path' => $meta['path'],
'filename' => $meta['filename'],
'extension' => $meta['extension']
];
}
[$pdir, $name] = $this->splitPath($dirname, false);
if ($this->useDisplayPaths) {
if ($pdir !== $this->root) {
$pdir = $this->toSingleVirtualPath($pdir, false, false, true, true); // recursion!
if ($pdir === false) {
return false;
} // failed to create dirs
}
}
$folder = $this->createDirectory($name, $pdir !== '' ? basename($pdir) : $pdir);
if ($folder !== null) {
$itemId = $folder->getId();
$this->cacheFileObjects[$itemId] = $folder;
$this->cacheHasDirs[$itemId] = false;
$this->cacheObjects([$itemId => $folder]);
$path_parts = $this->splitFileExtension($name);
$result = [
'path' => Util::normalizeDirname($pdir).'/'.($this->useDisplayPaths ? $name : $itemId),
'filename' => $path_parts['filename'],
'extension' => $path_parts['extension']
];
return $result;
}
return false;
}
/**
* {@inheritdoc}
*/
public function has($path)
{
if ($this->useDisplayPaths) {
try {
$this->toVirtualPath($path, false);
return true;
} catch (FileNotFoundException $e) {
return false;
}
}
return ($this->getFileObject($path, true) instanceof Google_Service_Drive_DriveFile);
}
/**
* {@inheritdoc}
*/
public function read($path)
{
if ($this->useDisplayPaths) {
$fileId = $this->toVirtualPath($path, false, true);
} else {
[, $fileId] = $this->splitPath($path);
}
/** @var RequestInterface $response */
if (($response = $this->service->files->get($fileId, $this->applyDefaultParams(['alt' => 'media'], 'files.get')))) {
return [
'contents' => (string)$response->getBody()
];
}
return false;
}
/**
* {@inheritdoc}
*/
public function readStream($path)
{
if ($this->useDisplayPaths) {
$path = $this->toVirtualPath($path, false, true);
}
$redirect = null;
if (func_num_args() > 1) {
$redirect = func_get_arg(1);
}
if (!$redirect) {
$redirect = [
'cnt' => 0,
'url' => '',
'token' => '',
'cookies' => []
];
if (($file = $this->getFileObject($path))) {
if ($file->getMimeType() === self::DIRMIME) {
throw new FileNotFoundException($path);
}
$dlurl = $this->getDownloadUrl($file);
$client = $this->service->getClient();
/** @var array|string|object $token */
if ($client->isUsingApplicationDefaultCredentials()) {
$token = $client->fetchAccessTokenWithAssertion();
} else {
$token = $client->getAccessToken();
}
$access_token = '';
if (is_array($token)) {
if (empty($token['access_token']) && !empty($token['refresh_token'])) {
$token = $client->fetchAccessTokenWithRefreshToken();
}
$access_token = $token['access_token'];
} else {
if (($token = @json_decode($token))) {
$access_token = $token->access_token;
}
}
$redirect = [
'cnt' => 0,
'url' => '',
'token' => $access_token,
'cookies' => []
];
}
} else {
if ($redirect['cnt'] > 5) {
return false;
}
$dlurl = $redirect['url'];
$redirect['url'] = '';
$access_token = $redirect['token'];
}
if (!empty($dlurl)) {
$url = parse_url($dlurl);
$cookies = [];
if ($redirect['cookies']) {
foreach ($redirect['cookies'] as $d => $c) {
if (strpos($url['host'], $d) !== false) {
$cookies[] = $c;
}
}
}
if (!empty($access_token)) {
$query = isset($url['query']) ? '?'.$url['query'] : '';
$stream = stream_socket_client('ssl://'.$url['host'].':443');
stream_set_timeout($stream, 300);
fwrite($stream, "GET {$url['path']}{$query} HTTP/1.1\r\n");
fwrite($stream, "Host: {$url['host']}\r\n");
fwrite($stream, "Authorization: Bearer {$access_token}\r\n");
fwrite($stream, "Connection: Close\r\n");
if ($cookies) {
fwrite($stream, 'Cookie: '.implode('; ', $cookies)."\r\n");
}
fwrite($stream, "\r\n");
while (($res = trim(fgets($stream))) !== '') {
// find redirect
if (preg_match('/^Location: (.+)$/', $res, $m)) {
$redirect['url'] = $m[1];
}
// fetch cookie
if (strpos($res, 'Set-Cookie:') === 0) {
$domain = $url['host'];
if (preg_match('/^Set-Cookie:(.+)(?:domain=\s*([^ ;]+))?/i', $res, $c1)) {
if (!empty($c1[2])) {
$domain = trim($c1[2]);
}
if (preg_match('/([^ ]+=[^;]+)/', $c1[1], $c2)) {
$redirect['cookies'][$domain] = $c2[1];
}
}
}
}
if ($redirect['url']) {
$redirect['cnt']++;
fclose($stream);
return $this->readStream($path, $redirect);
}
return compact('stream');
}
}
return false;
}
/**
* {@inheritdoc}
*/
public function listContents($directory = '', $recursive = false)
{
if ($this->useDisplayPaths) {
$time = microtime(true);
$vp = [];
try {
$vp = $this->toVirtualPath($directory);
} catch (\Exception $e) {
}
$elapsed = (microtime(true) - $time) * 1000.0;
if (!is_array($vp)) {
$vp = [$vp];
}
$items = [];
foreach ($vp as $path) {
if (DEBUG_ME) {
echo 'Converted display path to virtual path ['.number_format($elapsed, 1).'ms]: '.$path."\n";
}
$items = array_merge($items, array_values($this->getItems($path, $recursive)));
}
} else {
$items = array_values($this->getItems($directory, $recursive));
}
return $items;
}
/**
* {@inheritdoc}
*/
public function getMetadata($path)
{
if ($this->useDisplayPaths) {
$path = $this->toVirtualPath($path, true, true);
}
if (($obj = $this->getFileObject($path, true))) {
if ($obj instanceof Google_Service_Drive_DriveFile) {
return $this->normaliseObject($obj, self::dirname($path));
}
}
return false;
}
/**
* {@inheritdoc}
*/
public function getSize($path)
{
$meta = $this->getMetadata($path);
return ($meta && isset($meta['size'])) ? $meta : false;
}
/**
* {@inheritdoc}
*/
public function getMimetype($path)
{
$meta = $this->getMetadata($path);
return ($meta && isset($meta['mimetype'])) ? $meta : false;
}
/**
* {@inheritdoc}
*/
public function getTimestamp($path)
{
$meta = $this->getMetadata($path);
return ($meta && isset($meta['timestamp'])) ? $meta : false;
}
/**
* {@inheritdoc}
*/
public function setVisibility($path, $visibility, $internalCall = false)
{
if ($this->useDisplayPaths && !$internalCall) {
try {
$path = $this->toVirtualPath($path, false, true);
} catch (\Exception $e) {
return false;
}
}
$result = ($visibility === AdapterInterface::VISIBILITY_PUBLIC) ? $this->publish($path) : $this->unPublish($path);
if ($result) {
return compact('path', 'visibility');
}
return false;
}
/**
* {@inheritdoc}
*/
public function getVisibility($path)
{
if ($this->useDisplayPaths) {
$path = $this->toVirtualPath($path, false, true);
}
return [
'visibility' => $this->getRawVisibility($path)
];
}
// /////////////////- ORIGINAL METHODS -///////////////////
/**
* Get contents parmanent URL
*
* @param string $path itemId path
*
* @return string|false
*/
public function getUrl($path)
{
if ($this->useDisplayPaths) {
$path = $this->toVirtualPath($path, false, true);
}
if ($this->publish($path)) {
$obj = $this->getFileObject($path);
if (($url = $obj->getWebContentLink())) {
return str_replace('export=download', 'export=media', $url);
}
if (($url = $obj->getWebViewLink())) {
return $url;
}
}
return false;
}
/**
* Has child directory
*
* @param string $path itemId path
*
* @return array
*/
public function hasDir($path)
{
$meta = $this->getMetadata($path);
return ($meta && isset($meta['hasdir'])) ? $meta : [
'hasdir' => true
];
}
/**
* Do cache cacheHasDirs with batch request
*
* @param array $targets [[path => id],...]
* @param array $object
* @return array
*/
protected function setHasDir($targets, $object)
{
$service = $this->service;
$client = $service->getClient();
$gFiles = $service->files;
$opts = [
'pageSize' => 1,
'orderBy' => 'folder,modifiedTime,name',
];
$paths = [];
$client->setUseBatch(true);
$batch = $service->createBatch();
$i = 0;
foreach ($targets as $id) {
$opts['q'] = sprintf('trashed = false and "%s" in parents and mimeType = "%s"', $id, self::DIRMIME);
/** @var RequestInterface $request */
$request = $gFiles->listFiles($this->applyDefaultParams($opts, 'files.list'));
$key = ++$i;
$batch->add($request, (string)$key);
$paths['response-'.$key] = $id;
}
$results = $batch->execute();
foreach ($results as $key => $result) {
if ($result instanceof Google_Service_Drive_FileList) {
$object[$paths[$key]]['hasdir'] = $this->cacheHasDirs[$paths[$key]] = (bool)$result->getFiles();
}
}
$client->setUseBatch(false);
return $object;
}
/**
* Get the object permissions presented as a visibility.
*
* @param string $path
* itemId path
*
* @return string
*/
protected function getRawVisibility($path)
{
$file = $this->getFileObject($path);
$permissions = $file->getPermissions();
$visibility = AdapterInterface::VISIBILITY_PRIVATE;
foreach ($permissions as $permission) {
if ($permission->type === $this->publishPermission['type'] && $permission->role === $this->publishPermission['role']) {
$visibility = AdapterInterface::VISIBILITY_PUBLIC;
break;
}
}
return $visibility;
}
/**
* Publish specified path item
*
* @param string $path itemId path
*
* @return bool
*/
protected function publish($path)
{
if (($file = $this->getFileObject($path))) {
if ($this->getRawVisibility($path) === AdapterInterface::VISIBILITY_PUBLIC) {
return true;
}
try {
$new_permission = new Google_Service_Drive_Permission($this->publishPermission);
if ($permission = $this->service->permissions->create($file->getId(), $new_permission, $this->applyDefaultParams([], 'files.create'))) {
$file->setPermissions([$permission]);
return true;
}
} catch (Exception $e) {
return false;
}
}
return false;
}
/**
* Un-publish specified path item
*
* @param string $path itemId path
*
* @return bool
*/
protected function unPublish($path)
{
if (($file = $this->getFileObject($path))) {
$permissions = $file->getPermissions();
try {
foreach ($permissions as $permission) {
if ($permission->type === $this->publishPermission['type'] && $permission->role === $this->publishPermission['role'] && !empty($file->getId())) {
$this->service->permissions->delete($file->getId(), $permission->getId(), $this->applyDefaultParams([], 'files.trash'));
}
}
$file->setPermissions([]);
return true;
} catch (Exception $e) {
return false;
}
}
return false;