1 files changed, 161 insertions, 0 deletions
diff --git a/apps/files_sharing/lib/sharedmount.php b/apps/files_sharing/lib/sharedmount.php
new file mode 100644
index 00000000000..8d0ecbc6789
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+++ b/apps/files_sharing/lib/sharedmount.php
@@ -0,0 +1,161 @@
+<?php
+/**
+ * Copyright (c) 2014 Robin Appelman <icewind@owncloud.com>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+namespace OCA\Files_Sharing;
+
+use OC\Files\Filesystem;
+use OC\Files\Mount\Mount;
+use OC\Files\Mount\MoveableMount;
+use OC\Files\Storage\Shared;
+
+/**
+ * Shared mount points can be moved by the user
+ */
+class SharedMount extends Mount implements MoveableMount {
+	/**
+	 * @var \OC\Files\Storage\Shared $storage
+	 */
+	protected $storage = null;
+
+	public function __construct($storage, $mountpoint, $arguments = null, $loader = null) {
+		// first update the mount point before creating the parent
+		$newMountPoint = self::verifyMountPoint($arguments['share']);
+		$absMountPoint = '/' . \OCP\User::getUser() . '/files' . $newMountPoint;
+		parent::__construct($storage, $absMountPoint, $arguments, $loader);
+	}
+
+	/**
+	 * check if the parent folder exists otherwise move the mount point up
+	 */
+	private static function verifyMountPoint(&$share) {
+
+		$mountPoint = basename($share['file_target']);
+		$parent = dirname($share['file_target']);
+
+		while (!\OC\Files\Filesystem::is_dir($parent)) {
+			$parent = dirname($parent);
+		}
+
+		$newMountPoint = \OCA\Files_Sharing\Helper::generateUniqueTarget(
+				\OC\Files\Filesystem::normalizePath($parent . '/' . $mountPoint),
+				array(),
+				new \OC\Files\View('/' . \OCP\User::getUser() . '/files')
+				);
+
+		if($newMountPoint !== $share['file_target']) {
+			self::updateFileTarget($newMountPoint, $share);
+			$share['file_target'] = $newMountPoint;
+			$share['unique_name'] = true;
+		}
+
+		return $newMountPoint;
+	}
+
+	/**
+	 * update fileTarget in the database if the mount point changed
+	 * @param string $newPath
+	 * @param array $share reference to the share which should be modified
+	 * @return type
+	 */
+	private static function updateFileTarget($newPath, &$share) {
+		// if the user renames a mount point from a group share we need to create a new db entry
+		// for the unique name
+		if ($share['share_type'] === \OCP\Share::SHARE_TYPE_GROUP && empty($share['unique_name'])) {
+			$query = \OC_DB::prepare('INSERT INTO `*PREFIX*share` (`item_type`, `item_source`, `item_target`,'
+			.' `share_type`, `share_with`, `uid_owner`, `permissions`, `stime`, `file_source`,'
+			.' `file_target`, `token`, `parent`) VALUES (?,?,?,?,?,?,?,?,?,?,?,?)');
+			$arguments = array($share['item_type'], $share['item_source'], $share['item_target'],
+				2, \OCP\User::getUser(), $share['uid_owner'], $share['permissions'], $share['stime'], $share['file_source'],
+				$newPath, $share['token'], $share['id']);
+		} else {
+			// rename mount point
+			$query = \OC_DB::prepare(
+					'Update `*PREFIX*share`
+						SET `file_target` = ?
+						WHERE `id` = ?'
+					);
+			$arguments = array($newPath, $share['id']);
+		}
+
+		$result = $query->execute($arguments);
+
+		return $result === 1 ? true : false;
+	}
+
+	/**
+	 * Format a path to be relative to the /user/files/ directory
+	 *
+	 * @param string $path the absolute path
+	 * @return string e.g. turns '/admin/files/test.txt' into '/test.txt'
+	 */
+	private function stripUserFilesPath($path) {
+		$trimmed = ltrim($path, '/');
+		$split = explode('/', $trimmed);
+
+		// it is not a file relative to data/user/files
+		if (count($split) < 3 || $split[1] !== 'files') {
+			\OCP\Util::writeLog('file sharing',
+				'Can not strip userid and "files/" from path: ' . $path,
+				\OCP\Util::DEBUG);
+			return false;
+		}
+
+		// skip 'user' and 'files'
+		$sliced = array_slice($split, 2);
+		$relPath = implode('/', $sliced);
+
+		return '/' . $relPath;
+	}
+
+	/**
+	 * Move the mount point to $target
+	 *
+	 * @param string $target the target mount point
+	 * @return bool
+	 */
+	public function moveMount($target) {
+		// it shouldn't be possible to move a Shared storage into another one
+		list($targetStorage,) = Filesystem::resolvePath($target);
+		if ($targetStorage instanceof Shared) {
+			\OCP\Util::writeLog('file sharing',
+				'It is not allowed to move one mount point into another one',
+				\OCP\Util::DEBUG);
+			return false;
+		}
+
+		$relTargetPath = $this->stripUserFilesPath($target);
+		$share = $this->storage->getShare();
+
+		$result = $this->updateFileTarget($relTargetPath, $share);
+
+		if ($result) {
+			$this->setMountPoint($target);
+			$this->storage->setUniqueName();
+			$this->storage->setMountPoint($relTargetPath);
+
+		} else {
+			\OCP\Util::writeLog('file sharing',
+				'Could not rename mount point for shared folder "' . $this->getMountPoint() . '" to "' . $target . '"',
+				\OCP\Util::ERROR);
+		}
+
+		return $result;
+	}
+
+	/**
+	 * Remove the mount points
+	 *
+	 * @return bool
+	 */
+	public function removeMount() {
+		$storage = $this->getStorage();
+		$result =  \OCP\Share::unshareFromSelf($storage->getItemType(), $storage->getMountPoint());
+
+		return $result;
+	}
+}