nextcloud /
server
| Total Complexity | 91 |
| Total Lines | 461 |
| Duplicated Lines | 0 % |
| Changes | 0 | ||
Complex classes like SharedStorage 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 SharedStorage, and based on these observations, apply Extract Interface, too.
| 1 | <?php |
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| 51 | class SharedStorage extends \OC\Files\Storage\Wrapper\Jail implements ISharedStorage, IDisableEncryptionStorage { |
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| 52 | |||
| 53 | /** @var \OCP\Share\IShare */ |
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| 54 | private $superShare; |
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| 55 | |||
| 56 | /** @var \OCP\Share\IShare[] */ |
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| 57 | private $groupedShares; |
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| 58 | |||
| 59 | /** |
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| 60 | * @var \OC\Files\View |
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| 61 | */ |
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| 62 | private $ownerView; |
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| 63 | |||
| 64 | private $initialized = false; |
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| 65 | |||
| 66 | /** |
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| 67 | * @var ICacheEntry |
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| 68 | */ |
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| 69 | private $sourceRootInfo; |
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| 70 | |||
| 71 | /** @var string */ |
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| 72 | private $user; |
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| 73 | |||
| 74 | /** |
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| 75 | * @var \OCP\ILogger |
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| 76 | */ |
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| 77 | private $logger; |
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| 78 | |||
| 79 | /** @var IStorage */ |
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| 80 | private $nonMaskedStorage; |
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| 81 | |||
| 82 | private $options; |
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introduced
by
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| 83 | |||
| 84 | /** @var boolean */ |
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| 85 | private $sharingDisabledForUser; |
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| 86 | |||
| 87 | public function __construct($arguments) { |
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| 88 | $this->ownerView = $arguments['ownerView']; |
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| 89 | $this->logger = \OC::$server->getLogger(); |
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| 90 | |||
| 91 | $this->superShare = $arguments['superShare']; |
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| 92 | $this->groupedShares = $arguments['groupedShares']; |
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| 93 | |||
| 94 | $this->user = $arguments['user']; |
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| 95 | if (isset($arguments['sharingDisabledForUser'])) { |
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| 96 | $this->sharingDisabledForUser = $arguments['sharingDisabledForUser']; |
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| 97 | } else { |
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| 98 | $this->sharingDisabledForUser = false; |
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| 99 | } |
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| 100 | |||
| 101 | parent::__construct([ |
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| 102 | 'storage' => null, |
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| 103 | 'root' => null, |
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| 104 | ]); |
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| 105 | } |
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| 106 | |||
| 107 | /** |
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| 108 | * @return ICacheEntry |
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| 109 | */ |
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| 110 | private function getSourceRootInfo() { |
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| 111 | if (is_null($this->sourceRootInfo)) { |
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| 112 | if (is_null($this->superShare->getNodeCacheEntry())) { |
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| 113 | $this->init(); |
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| 114 | $this->sourceRootInfo = $this->nonMaskedStorage->getCache()->get($this->rootPath); |
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| 115 | } else { |
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| 116 | $this->sourceRootInfo = $this->superShare->getNodeCacheEntry(); |
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| 117 | } |
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| 118 | } |
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| 119 | return $this->sourceRootInfo; |
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| 120 | } |
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| 121 | |||
| 122 | private function init() { |
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| 123 | if ($this->initialized) { |
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| 124 | return; |
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| 125 | } |
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| 126 | $this->initialized = true; |
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| 127 | try { |
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| 128 | Filesystem::initMountPoints($this->superShare->getShareOwner()); |
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| 129 | $sourcePath = $this->ownerView->getPath($this->superShare->getNodeId()); |
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| 130 | list($this->nonMaskedStorage, $this->rootPath) = $this->ownerView->resolvePath($sourcePath); |
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| 131 | $this->storage = new PermissionsMask([ |
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| 132 | 'storage' => $this->nonMaskedStorage, |
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| 133 | 'mask' => $this->superShare->getPermissions() |
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| 134 | ]); |
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| 135 | } catch (NotFoundException $e) { |
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| 136 | // original file not accessible or deleted, set FailedStorage |
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| 137 | $this->storage = new FailedStorage(['exception' => $e]); |
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| 138 | $this->cache = new FailedCache(); |
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| 139 | $this->rootPath = ''; |
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| 140 | } catch (NoUserException $e) { |
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| 141 | // sharer user deleted, set FailedStorage |
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| 142 | $this->storage = new FailedStorage(['exception' => $e]); |
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| 143 | $this->cache = new FailedCache(); |
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| 144 | $this->rootPath = ''; |
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| 145 | } catch (\Exception $e) { |
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| 146 | $this->storage = new FailedStorage(['exception' => $e]); |
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| 147 | $this->cache = new FailedCache(); |
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| 148 | $this->rootPath = ''; |
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| 149 | $this->logger->logException($e); |
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| 150 | } |
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| 151 | |||
| 152 | if (!$this->nonMaskedStorage) { |
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| 153 | $this->nonMaskedStorage = $this->storage; |
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| 154 | } |
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| 155 | } |
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| 156 | |||
| 157 | /** |
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| 158 | * @inheritdoc |
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| 159 | */ |
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| 160 | public function instanceOfStorage($class) { |
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| 161 | if ($class === '\OC\Files\Storage\Common') { |
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| 162 | return true; |
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| 163 | } |
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| 164 | if (in_array($class, ['\OC\Files\Storage\Home', '\OC\Files\ObjectStore\HomeObjectStoreStorage'])) { |
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| 165 | return false; |
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| 166 | } |
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| 167 | return parent::instanceOfStorage($class); |
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| 168 | } |
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| 169 | |||
| 170 | /** |
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| 171 | * @return string |
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| 172 | */ |
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| 173 | public function getShareId() { |
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| 174 | return $this->superShare->getId(); |
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| 175 | } |
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| 176 | |||
| 177 | private function isValid() { |
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| 178 | return $this->getSourceRootInfo() && ($this->getSourceRootInfo()->getPermissions() & Constants::PERMISSION_SHARE) === Constants::PERMISSION_SHARE; |
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| 179 | } |
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| 180 | |||
| 181 | /** |
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| 182 | * get id of the mount point |
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| 183 | * |
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| 184 | * @return string |
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| 185 | */ |
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| 186 | public function getId() { |
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| 187 | return 'shared::' . $this->getMountPoint(); |
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| 188 | } |
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| 189 | |||
| 190 | /** |
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| 191 | * Get the permissions granted for a shared file |
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| 192 | * |
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| 193 | * @param string $target Shared target file path |
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| 194 | * @return int CRUDS permissions granted |
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| 195 | */ |
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| 196 | public function getPermissions($target = '') { |
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| 197 | if (!$this->isValid()) { |
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| 198 | return 0; |
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| 199 | } |
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| 200 | $permissions = parent::getPermissions($target) & $this->superShare->getPermissions(); |
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| 201 | |||
| 202 | // part files and the mount point always have delete permissions |
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| 203 | if ($target === '' || pathinfo($target, PATHINFO_EXTENSION) === 'part') { |
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| 204 | $permissions |= \OCP\Constants::PERMISSION_DELETE; |
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| 205 | } |
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| 206 | |||
| 207 | if ($this->sharingDisabledForUser) { |
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| 208 | $permissions &= ~\OCP\Constants::PERMISSION_SHARE; |
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| 209 | } |
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| 210 | |||
| 211 | return $permissions; |
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| 212 | } |
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| 213 | |||
| 214 | public function isCreatable($path) { |
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| 215 | return ($this->getPermissions($path) & \OCP\Constants::PERMISSION_CREATE); |
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| 216 | } |
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| 217 | |||
| 218 | public function isReadable($path) { |
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| 219 | if (!$this->isValid()) { |
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| 220 | return false; |
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| 221 | } |
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| 222 | if (!$this->file_exists($path)) { |
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| 223 | return false; |
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| 224 | } |
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| 225 | /** @var IStorage $storage */ |
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| 226 | /** @var string $internalPath */ |
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| 227 | list($storage, $internalPath) = $this->resolvePath($path); |
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| 228 | return $storage->isReadable($internalPath); |
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| 229 | } |
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| 230 | |||
| 231 | public function isUpdatable($path) { |
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| 232 | return ($this->getPermissions($path) & \OCP\Constants::PERMISSION_UPDATE); |
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| 233 | } |
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| 234 | |||
| 235 | public function isDeletable($path) { |
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| 236 | return ($this->getPermissions($path) & \OCP\Constants::PERMISSION_DELETE); |
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| 237 | } |
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| 238 | |||
| 239 | public function isSharable($path) { |
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| 240 | if (\OCP\Util::isSharingDisabledForUser() || !\OC\Share\Share::isResharingAllowed()) { |
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| 241 | return false; |
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| 242 | } |
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| 243 | return ($this->getPermissions($path) & \OCP\Constants::PERMISSION_SHARE); |
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| 244 | } |
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| 245 | |||
| 246 | public function fopen($path, $mode) { |
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| 247 | if ($source = $this->getUnjailedPath($path)) { |
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| 248 | switch ($mode) { |
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| 249 | case 'r+': |
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| 250 | case 'rb+': |
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| 251 | case 'w+': |
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| 252 | case 'wb+': |
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| 253 | case 'x+': |
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| 254 | case 'xb+': |
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| 255 | case 'a+': |
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| 256 | case 'ab+': |
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| 257 | case 'w': |
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| 258 | case 'wb': |
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| 259 | case 'x': |
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| 260 | case 'xb': |
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| 261 | case 'a': |
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| 262 | case 'ab': |
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| 263 | $creatable = $this->isCreatable(dirname($path)); |
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| 264 | $updatable = $this->isUpdatable($path); |
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| 265 | // if neither permissions given, no need to continue |
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| 266 | if (!$creatable && !$updatable) { |
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| 267 | if (pathinfo($path, PATHINFO_EXTENSION) === 'part') { |
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| 268 | $updatable = $this->isUpdatable(dirname($path)); |
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| 269 | } |
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| 270 | |||
| 271 | if (!$updatable) { |
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| 272 | return false; |
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| 273 | } |
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| 274 | } |
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| 275 | |||
| 276 | $exists = $this->file_exists($path); |
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| 277 | // if a file exists, updatable permissions are required |
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| 278 | if ($exists && !$updatable) { |
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| 279 | return false; |
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| 280 | } |
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| 281 | |||
| 282 | // part file is allowed if !$creatable but the final file is $updatable |
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| 283 | if (pathinfo($path, PATHINFO_EXTENSION) !== 'part') { |
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| 284 | if (!$exists && !$creatable) { |
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| 285 | return false; |
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| 286 | } |
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| 287 | } |
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| 288 | } |
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| 289 | $info = [ |
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| 290 | 'target' => $this->getMountPoint() . $path, |
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| 291 | 'source' => $source, |
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| 292 | 'mode' => $mode, |
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| 293 | ]; |
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| 294 | \OCP\Util::emitHook('\OC\Files\Storage\Shared', 'fopen', $info); |
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| 295 | return $this->nonMaskedStorage->fopen($this->getUnjailedPath($path), $mode); |
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| 296 | } |
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| 297 | return false; |
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| 298 | } |
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| 299 | |||
| 300 | /** |
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| 301 | * see http://php.net/manual/en/function.rename.php |
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| 302 | * |
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| 303 | * @param string $path1 |
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| 304 | * @param string $path2 |
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| 305 | * @return bool |
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| 306 | */ |
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| 307 | public function rename($path1, $path2) { |
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| 308 | $this->init(); |
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| 309 | $isPartFile = pathinfo($path1, PATHINFO_EXTENSION) === 'part'; |
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| 310 | $targetExists = $this->file_exists($path2); |
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| 311 | $sameFodler = dirname($path1) === dirname($path2); |
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| 312 | |||
| 313 | if ($targetExists || ($sameFodler && !$isPartFile)) { |
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| 314 | if (!$this->isUpdatable('')) { |
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| 315 | return false; |
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| 316 | } |
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| 317 | } else { |
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| 318 | if (!$this->isCreatable('')) { |
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| 319 | return false; |
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| 320 | } |
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| 321 | } |
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| 322 | |||
| 323 | return $this->nonMaskedStorage->rename($this->getUnjailedPath($path1), $this->getUnjailedPath($path2)); |
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| 324 | } |
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| 325 | |||
| 326 | /** |
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| 327 | * return mount point of share, relative to data/user/files |
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| 328 | * |
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| 329 | * @return string |
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| 330 | */ |
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| 331 | public function getMountPoint() { |
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| 332 | return $this->superShare->getTarget(); |
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| 333 | } |
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| 334 | |||
| 335 | /** |
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| 336 | * @param string $path |
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| 337 | */ |
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| 338 | public function setMountPoint($path) { |
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| 339 | $this->superShare->setTarget($path); |
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| 340 | |||
| 341 | foreach ($this->groupedShares as $share) { |
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| 342 | $share->setTarget($path); |
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| 343 | } |
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| 344 | } |
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| 345 | |||
| 346 | /** |
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| 347 | * get the user who shared the file |
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| 348 | * |
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| 349 | * @return string |
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| 350 | */ |
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| 351 | public function getSharedFrom() { |
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| 352 | return $this->superShare->getShareOwner(); |
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| 353 | } |
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| 354 | |||
| 355 | /** |
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| 356 | * @return \OCP\Share\IShare |
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| 357 | */ |
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| 358 | public function getShare() { |
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| 359 | return $this->superShare; |
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| 360 | } |
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| 361 | |||
| 362 | /** |
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| 363 | * return share type, can be "file" or "folder" |
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| 364 | * |
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| 365 | * @return string |
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| 366 | */ |
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| 367 | public function getItemType() { |
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| 368 | return $this->superShare->getNodeType(); |
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| 369 | } |
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| 370 | |||
| 371 | /** |
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| 372 | * @param string $path |
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| 373 | * @param null $storage |
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| 374 | * @return Cache |
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| 375 | */ |
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| 376 | public function getCache($path = '', $storage = null) { |
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| 377 | if ($this->cache) { |
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| 378 | return $this->cache; |
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| 379 | } |
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| 380 | if (!$storage) { |
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| 381 | $storage = $this; |
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| 382 | } |
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| 383 | $sourceRoot = $this->getSourceRootInfo(); |
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| 384 | if ($this->storage instanceof FailedStorage) { |
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| 385 | return new FailedCache(); |
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| 386 | } |
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| 387 | |||
| 388 | $this->cache = new \OCA\Files_Sharing\Cache($storage, $sourceRoot, $this->superShare); |
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| 389 | return $this->cache; |
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| 390 | } |
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| 391 | |||
| 392 | public function getScanner($path = '', $storage = null) { |
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| 393 | if (!$storage) { |
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| 394 | $storage = $this; |
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| 395 | } |
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| 396 | return new \OCA\Files_Sharing\Scanner($storage); |
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| 397 | } |
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| 398 | |||
| 399 | public function getOwner($path) { |
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| 400 | return $this->superShare->getShareOwner(); |
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| 401 | } |
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| 402 | |||
| 403 | /** |
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| 404 | * unshare complete storage, also the grouped shares |
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| 405 | * |
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| 406 | * @return bool |
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| 407 | */ |
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| 408 | public function unshareStorage() { |
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| 409 | foreach ($this->groupedShares as $share) { |
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| 410 | \OC::$server->getShareManager()->deleteFromSelf($share, $this->user); |
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| 411 | } |
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| 412 | return true; |
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| 413 | } |
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| 414 | |||
| 415 | /** |
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| 416 | * @param string $path |
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| 417 | * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE |
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| 418 | * @param \OCP\Lock\ILockingProvider $provider |
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| 419 | * @throws \OCP\Lock\LockedException |
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| 420 | */ |
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| 421 | public function acquireLock($path, $type, ILockingProvider $provider) { |
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| 422 | /** @var \OCP\Files\Storage $targetStorage */ |
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| 423 | list($targetStorage, $targetInternalPath) = $this->resolvePath($path); |
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| 424 | $targetStorage->acquireLock($targetInternalPath, $type, $provider); |
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| 425 | // lock the parent folders of the owner when locking the share as recipient |
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| 426 | if ($path === '') { |
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| 427 | $sourcePath = $this->ownerView->getPath($this->superShare->getNodeId()); |
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| 428 | $this->ownerView->lockFile(dirname($sourcePath), ILockingProvider::LOCK_SHARED, true); |
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| 429 | } |
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| 430 | } |
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| 431 | |||
| 432 | /** |
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| 433 | * @param string $path |
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| 434 | * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE |
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| 435 | * @param \OCP\Lock\ILockingProvider $provider |
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| 436 | */ |
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| 437 | public function releaseLock($path, $type, ILockingProvider $provider) { |
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| 438 | /** @var \OCP\Files\Storage $targetStorage */ |
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| 439 | list($targetStorage, $targetInternalPath) = $this->resolvePath($path); |
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| 440 | $targetStorage->releaseLock($targetInternalPath, $type, $provider); |
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| 441 | // unlock the parent folders of the owner when unlocking the share as recipient |
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| 442 | if ($path === '') { |
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| 443 | $sourcePath = $this->ownerView->getPath($this->superShare->getNodeId()); |
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| 444 | $this->ownerView->unlockFile(dirname($sourcePath), ILockingProvider::LOCK_SHARED, true); |
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| 445 | } |
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| 446 | } |
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| 447 | |||
| 448 | /** |
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| 449 | * @param string $path |
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| 450 | * @param int $type \OCP\Lock\ILockingProvider::LOCK_SHARED or \OCP\Lock\ILockingProvider::LOCK_EXCLUSIVE |
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| 451 | * @param \OCP\Lock\ILockingProvider $provider |
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| 452 | */ |
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| 453 | public function changeLock($path, $type, ILockingProvider $provider) { |
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| 454 | /** @var \OCP\Files\Storage $targetStorage */ |
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| 455 | list($targetStorage, $targetInternalPath) = $this->resolvePath($path); |
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| 456 | $targetStorage->changeLock($targetInternalPath, $type, $provider); |
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| 457 | } |
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| 458 | |||
| 459 | /** |
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| 460 | * @return array [ available, last_checked ] |
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| 461 | */ |
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| 462 | public function getAvailability() { |
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| 463 | // shares do not participate in availability logic |
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| 464 | return [ |
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| 465 | 'available' => true, |
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| 466 | 'last_checked' => 0 |
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| 467 | ]; |
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| 468 | } |
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| 469 | |||
| 470 | /** |
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| 471 | * @param bool $available |
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| 472 | */ |
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| 473 | public function setAvailability($available) { |
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| 474 | // shares do not participate in availability logic |
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| 475 | } |
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| 476 | |||
| 477 | public function getSourceStorage() { |
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| 478 | $this->init(); |
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| 479 | return $this->nonMaskedStorage; |
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| 480 | } |
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| 481 | |||
| 482 | public function getWrapperStorage() { |
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| 483 | $this->init(); |
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| 484 | return $this->storage; |
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| 485 | } |
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| 486 | |||
| 487 | public function file_get_contents($path) { |
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| 488 | $info = [ |
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| 489 | 'target' => $this->getMountPoint() . '/' . $path, |
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| 490 | 'source' => $this->getUnjailedPath($path), |
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| 491 | ]; |
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| 492 | \OCP\Util::emitHook('\OC\Files\Storage\Shared', 'file_get_contents', $info); |
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| 493 | return parent::file_get_contents($path); |
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| 494 | } |
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| 495 | |||
| 496 | public function file_put_contents($path, $data) { |
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| 503 | } |
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| 504 | |||
| 505 | public function setMountOptions(array $options) { |
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| 506 | $this->mountOptions = $options; |
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| 507 | } |
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| 508 | |||
| 509 | public function getUnjailedPath($path) { |
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| 510 | $this->init(); |
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| 511 | return parent::getUnjailedPath($path); |
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| 512 | } |
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| 513 | } |
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| 514 |
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