nextcloud /
server
| Total Complexity | 70 |
| Total Lines | 383 |
| Duplicated Lines | 0 % |
| Changes | 1 | ||
| Bugs | 0 | Features | 0 |
Complex classes like Storage often do a lot of different things. To break such a class down, we need to identify a cohesive component within that class. A common approach to find such a component is to look for fields/methods that share the same prefixes, or suffixes.
Once you have determined the fields that belong together, you can apply the Extract Class refactoring. If the component makes sense as a sub-class, Extract Subclass is also a candidate, and is often faster.
While breaking up the class, it is a good idea to analyze how other classes use Storage, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 52 | class Storage extends DAV implements ISharedStorage, IDisableEncryptionStorage, IReliableEtagStorage { |
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| 53 | /** @var ICloudId */ |
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| 54 | private $cloudId; |
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| 55 | /** @var string */ |
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| 56 | private $mountPoint; |
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| 57 | /** @var string */ |
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| 58 | private $token; |
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| 59 | /** @var \OCP\ICacheFactory */ |
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| 60 | private $memcacheFactory; |
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| 61 | /** @var \OCP\Http\Client\IClientService */ |
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| 62 | private $httpClient; |
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| 63 | /** @var bool */ |
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| 64 | private $updateChecked = false; |
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| 65 | |||
| 66 | /** @var ExternalShareManager */ |
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| 67 | private $manager; |
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| 68 | |||
| 69 | /** |
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| 70 | * @param array{HttpClientService: IClientService, manager: ExternalShareManager, cloudId: ICloudId, mountpoint: string, token: string, password: ?string}|array $options |
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| 71 | */ |
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| 72 | public function __construct($options) { |
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| 73 | $this->memcacheFactory = \OC::$server->getMemCacheFactory(); |
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| 74 | $this->httpClient = $options['HttpClientService']; |
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| 75 | |||
| 76 | $this->manager = $options['manager']; |
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| 77 | $this->cloudId = $options['cloudId']; |
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| 78 | $discoveryService = \OC::$server->query(\OCP\OCS\IDiscoveryService::class); |
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| 79 | |||
| 80 | [$protocol, $remote] = explode('://', $this->cloudId->getRemote()); |
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| 81 | if (strpos($remote, '/')) { |
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| 82 | [$host, $root] = explode('/', $remote, 2); |
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| 83 | } else { |
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| 84 | $host = $remote; |
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| 85 | $root = ''; |
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| 86 | } |
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| 87 | $secure = $protocol === 'https'; |
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| 88 | $federatedSharingEndpoints = $discoveryService->discover($this->cloudId->getRemote(), 'FEDERATED_SHARING'); |
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| 89 | $webDavEndpoint = isset($federatedSharingEndpoints['webdav']) ? $federatedSharingEndpoints['webdav'] : '/public.php/webdav'; |
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| 90 | $root = rtrim($root, '/') . $webDavEndpoint; |
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| 91 | $this->mountPoint = $options['mountpoint']; |
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| 92 | $this->token = $options['token']; |
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| 93 | |||
| 94 | parent::__construct([ |
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| 95 | 'secure' => $secure, |
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| 96 | 'host' => $host, |
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| 97 | 'root' => $root, |
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| 98 | 'user' => $options['token'], |
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| 99 | 'password' => (string)$options['password'] |
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| 100 | ]); |
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| 101 | } |
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| 102 | |||
| 103 | public function getWatcher($path = '', $storage = null) { |
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| 104 | if (!$storage) { |
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| 105 | $storage = $this; |
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| 106 | } |
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| 107 | if (!isset($this->watcher)) { |
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| 108 | $this->watcher = new Watcher($storage); |
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| 109 | $this->watcher->setPolicy(\OC\Files\Cache\Watcher::CHECK_ONCE); |
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| 110 | } |
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| 111 | return $this->watcher; |
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| 112 | } |
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| 113 | |||
| 114 | public function getRemoteUser(): string { |
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| 115 | return $this->cloudId->getUser(); |
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| 116 | } |
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| 117 | |||
| 118 | public function getRemote(): string { |
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| 119 | return $this->cloudId->getRemote(); |
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| 120 | } |
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| 121 | |||
| 122 | public function getMountPoint(): string { |
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| 123 | return $this->mountPoint; |
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| 124 | } |
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| 125 | |||
| 126 | public function getToken(): string { |
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| 127 | return $this->token; |
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| 128 | } |
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| 129 | |||
| 130 | public function getPassword(): ?string { |
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| 131 | return $this->password; |
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| 132 | } |
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| 133 | |||
| 134 | /** |
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| 135 | * Get id of the mount point. |
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| 136 | * @return string |
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| 137 | */ |
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| 138 | public function getId() { |
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| 139 | return 'shared::' . md5($this->token . '@' . $this->getRemote()); |
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| 140 | } |
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| 141 | |||
| 142 | public function getCache($path = '', $storage = null) { |
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| 143 | if (is_null($this->cache)) { |
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| 144 | $this->cache = new Cache($this, $this->cloudId); |
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| 145 | } |
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| 146 | return $this->cache; |
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| 147 | } |
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| 148 | |||
| 149 | /** |
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| 150 | * @param string $path |
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| 151 | * @param \OC\Files\Storage\Storage $storage |
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| 152 | * @return \OCA\Files_Sharing\External\Scanner |
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| 153 | */ |
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| 154 | public function getScanner($path = '', $storage = null) { |
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| 155 | if (!$storage) { |
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| 156 | $storage = $this; |
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| 157 | } |
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| 158 | if (!isset($this->scanner)) { |
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| 159 | $this->scanner = new Scanner($storage); |
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| 160 | } |
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| 161 | return $this->scanner; |
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| 162 | } |
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| 163 | |||
| 164 | /** |
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| 165 | * Check if a file or folder has been updated since $time |
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| 166 | * |
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| 167 | * @param string $path |
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| 168 | * @param int $time |
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| 169 | * @throws \OCP\Files\StorageNotAvailableException |
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| 170 | * @throws \OCP\Files\StorageInvalidException |
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| 171 | * @return bool |
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| 172 | */ |
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| 173 | public function hasUpdated($path, $time) { |
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| 174 | // since for owncloud webdav servers we can rely on etag propagation we only need to check the root of the storage |
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| 175 | // because of that we only do one check for the entire storage per request |
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| 176 | if ($this->updateChecked) { |
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| 177 | return false; |
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| 178 | } |
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| 179 | $this->updateChecked = true; |
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| 180 | try { |
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| 181 | return parent::hasUpdated('', $time); |
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| 182 | } catch (StorageInvalidException $e) { |
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| 183 | // check if it needs to be removed |
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| 184 | $this->checkStorageAvailability(); |
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| 185 | throw $e; |
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| 186 | } catch (StorageNotAvailableException $e) { |
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| 187 | // check if it needs to be removed or just temp unavailable |
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| 188 | $this->checkStorageAvailability(); |
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| 189 | throw $e; |
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| 190 | } |
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| 191 | } |
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| 192 | |||
| 193 | public function test() { |
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| 194 | try { |
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| 195 | return parent::test(); |
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| 196 | } catch (StorageInvalidException $e) { |
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| 197 | // check if it needs to be removed |
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| 198 | $this->checkStorageAvailability(); |
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| 199 | throw $e; |
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| 200 | } catch (StorageNotAvailableException $e) { |
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| 201 | // check if it needs to be removed or just temp unavailable |
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| 202 | $this->checkStorageAvailability(); |
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| 203 | throw $e; |
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| 204 | } |
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| 205 | } |
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| 206 | |||
| 207 | /** |
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| 208 | * Check whether this storage is permanently or temporarily |
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| 209 | * unavailable |
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| 210 | * |
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| 211 | * @throws \OCP\Files\StorageNotAvailableException |
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| 212 | * @throws \OCP\Files\StorageInvalidException |
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| 213 | */ |
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| 214 | public function checkStorageAvailability() { |
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| 215 | // see if we can find out why the share is unavailable |
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| 216 | try { |
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| 217 | $this->getShareInfo(); |
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| 218 | } catch (NotFoundException $e) { |
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| 219 | // a 404 can either mean that the share no longer exists or there is no Nextcloud on the remote |
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| 220 | if ($this->testRemote()) { |
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| 221 | // valid Nextcloud instance means that the public share no longer exists |
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| 222 | // since this is permanent (re-sharing the file will create a new token) |
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| 223 | // we remove the invalid storage |
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| 224 | $this->manager->removeShare($this->mountPoint); |
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| 225 | $this->manager->getMountManager()->removeMount($this->mountPoint); |
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| 226 | throw new StorageInvalidException("Remote share not found", 0, $e); |
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| 227 | } else { |
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| 228 | // Nextcloud instance is gone, likely to be a temporary server configuration error |
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| 229 | throw new StorageNotAvailableException("No nextcloud instance found at remote", 0, $e); |
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| 230 | } |
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| 231 | } catch (ForbiddenException $e) { |
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| 232 | // auth error, remove share for now (provide a dialog in the future) |
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| 233 | $this->manager->removeShare($this->mountPoint); |
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| 234 | $this->manager->getMountManager()->removeMount($this->mountPoint); |
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| 235 | throw new StorageInvalidException("Auth error when getting remote share"); |
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| 236 | } catch (\GuzzleHttp\Exception\ConnectException $e) { |
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| 237 | throw new StorageNotAvailableException("Failed to connect to remote instance", 0, $e); |
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| 238 | } catch (\GuzzleHttp\Exception\RequestException $e) { |
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| 239 | throw new StorageNotAvailableException("Error while sending request to remote instance", 0, $e); |
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| 240 | } |
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| 241 | } |
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| 242 | |||
| 243 | public function file_exists($path) { |
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| 244 | if ($path === '') { |
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| 245 | return true; |
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| 246 | } else { |
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| 247 | return parent::file_exists($path); |
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| 248 | } |
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| 249 | } |
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| 250 | |||
| 251 | /** |
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| 252 | * Check if the configured remote is a valid federated share provider |
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| 253 | * |
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| 254 | * @return bool |
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| 255 | */ |
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| 256 | protected function testRemote(): bool { |
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| 257 | try { |
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| 258 | return $this->testRemoteUrl($this->getRemote() . '/ocs-provider/index.php') |
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| 259 | || $this->testRemoteUrl($this->getRemote() . '/ocs-provider/') |
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| 260 | || $this->testRemoteUrl($this->getRemote() . '/status.php'); |
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| 261 | } catch (\Exception $e) { |
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| 262 | return false; |
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| 263 | } |
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| 264 | } |
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| 265 | |||
| 266 | private function testRemoteUrl(string $url): bool { |
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| 267 | $cache = $this->memcacheFactory->createDistributed('files_sharing_remote_url'); |
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| 268 | if ($cache->hasKey($url)) { |
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| 269 | return (bool)$cache->get($url); |
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| 270 | } |
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| 271 | |||
| 272 | $client = $this->httpClient->newClient(); |
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| 273 | try { |
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| 274 | $result = $client->get($url, [ |
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| 275 | 'timeout' => 10, |
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| 276 | 'connect_timeout' => 10, |
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| 277 | ])->getBody(); |
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| 278 | $data = json_decode($result); |
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| 279 | $returnValue = (is_object($data) && !empty($data->version)); |
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| 280 | } catch (ConnectException $e) { |
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| 281 | $returnValue = false; |
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| 282 | } catch (ClientException $e) { |
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| 283 | $returnValue = false; |
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| 284 | } catch (RequestException $e) { |
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| 285 | $returnValue = false; |
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| 286 | } |
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| 287 | |||
| 288 | $cache->set($url, $returnValue, 60 * 60 * 24); |
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| 289 | return $returnValue; |
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| 290 | } |
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| 291 | |||
| 292 | /** |
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| 293 | * Check whether the remote is an ownCloud/Nextcloud. This is needed since some sharing |
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| 294 | * features are not standardized. |
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| 295 | * |
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| 296 | * @throws LocalServerException |
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| 297 | */ |
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| 298 | public function remoteIsOwnCloud(): bool { |
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| 303 | } |
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| 304 | |||
| 305 | /** |
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| 306 | * @return mixed |
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| 307 | * @throws ForbiddenException |
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| 308 | * @throws NotFoundException |
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| 309 | * @throws \Exception |
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| 310 | */ |
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| 311 | public function getShareInfo() { |
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| 312 | $remote = $this->getRemote(); |
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| 313 | $token = $this->getToken(); |
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| 314 | $password = $this->getPassword(); |
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| 315 | |||
| 316 | try { |
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| 317 | // If remote is not an ownCloud do not try to get any share info |
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| 318 | if (!$this->remoteIsOwnCloud()) { |
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| 319 | return ['status' => 'unsupported']; |
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| 320 | } |
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| 321 | } catch (LocalServerException $e) { |
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| 322 | // throw this to be on the safe side: the share will still be visible |
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| 323 | // in the UI in case the failure is intermittent, and the user will |
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| 324 | // be able to decide whether to remove it if it's really gone |
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| 325 | throw new StorageNotAvailableException(); |
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| 326 | } |
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| 327 | |||
| 328 | $url = rtrim($remote, '/') . '/index.php/apps/files_sharing/shareinfo?t=' . $token; |
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| 329 | |||
| 330 | // TODO: DI |
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| 331 | $client = \OC::$server->getHTTPClientService()->newClient(); |
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| 332 | try { |
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| 333 | $response = $client->post($url, [ |
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| 334 | 'body' => ['password' => $password], |
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| 335 | 'timeout' => 10, |
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| 336 | 'connect_timeout' => 10, |
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| 337 | ]); |
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| 338 | } catch (\GuzzleHttp\Exception\RequestException $e) { |
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| 339 | if ($e->getCode() === Http::STATUS_UNAUTHORIZED || $e->getCode() === Http::STATUS_FORBIDDEN) { |
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| 340 | throw new ForbiddenException(); |
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| 341 | } |
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| 342 | if ($e->getCode() === Http::STATUS_NOT_FOUND) { |
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| 343 | throw new NotFoundException(); |
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| 344 | } |
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| 345 | // throw this to be on the safe side: the share will still be visible |
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| 346 | // in the UI in case the failure is intermittent, and the user will |
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| 347 | // be able to decide whether to remove it if it's really gone |
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| 348 | throw new StorageNotAvailableException(); |
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| 349 | } |
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| 350 | |||
| 351 | return json_decode($response->getBody(), true); |
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| 352 | } |
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| 353 | |||
| 354 | public function getOwner($path) { |
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| 355 | return $this->cloudId->getDisplayId(); |
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| 356 | } |
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| 357 | |||
| 358 | public function isSharable($path) { |
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| 359 | if (\OCP\Util::isSharingDisabledForUser() || !\OC\Share\Share::isResharingAllowed()) { |
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| 360 | return false; |
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| 361 | } |
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| 362 | return ($this->getPermissions($path) & Constants::PERMISSION_SHARE); |
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| 363 | } |
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| 364 | |||
| 365 | public function getPermissions($path) { |
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| 366 | $response = $this->propfind($path); |
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| 367 | // old federated sharing permissions |
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| 368 | if (isset($response['{http://open-collaboration-services.org/ns}share-permissions'])) { |
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| 369 | $permissions = $response['{http://open-collaboration-services.org/ns}share-permissions']; |
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| 370 | } elseif (isset($response['{http://open-cloud-mesh.org/ns}share-permissions'])) { |
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| 371 | // permissions provided by the OCM API |
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| 372 | $permissions = $this->ocmPermissions2ncPermissions($response['{http://open-collaboration-services.org/ns}share-permissions'], $path); |
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| 373 | } elseif (isset($response['{http://owncloud.org/ns}permissions'])) { |
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| 374 | return $this->parsePermissions($response['{http://owncloud.org/ns}permissions']); |
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| 375 | } else { |
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| 376 | // use default permission if remote server doesn't provide the share permissions |
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| 377 | $permissions = $this->getDefaultPermissions($path); |
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| 378 | } |
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| 379 | |||
| 380 | return $permissions; |
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| 381 | } |
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| 382 | |||
| 383 | public function needsPartFile() { |
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| 385 | } |
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| 386 | |||
| 387 | /** |
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| 388 | * Translate OCM Permissions to Nextcloud permissions |
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| 389 | * |
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| 390 | * @param string $ocmPermissions json encoded OCM permissions |
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| 391 | * @param string $path path to file |
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| 392 | * @return int |
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| 393 | */ |
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| 394 | protected function ocmPermissions2ncPermissions(string $ocmPermissions, string $path): int { |
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| 418 | } |
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| 419 | |||
| 420 | /** |
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| 421 | * Calculate the default permissions in case no permissions are provided |
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| 422 | */ |
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| 423 | protected function getDefaultPermissions(string $path): int { |
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| 431 | } |
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| 432 | |||
| 433 | public function free_space($path) { |
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| 435 | } |
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| 436 | } |
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| 437 |
In the issue above, the returned value is violating the contract defined by the mentioned interface.
Let's take a look at an example: