Next step in server-to-server sharing next generation, see #12285

Beside some small improvements and bug fixes this will probably the final state for OC8.

To test this you need to set up two ownCloud instances. Let's say:

URL: myPC/firstOwnCloud user: user1
URL: myPC/secondOwnCloud user: user2
Now user1 can share a file with user2 by entering the username and the URL to the second ownCloud to the share-drop-down, in this case "user2@myPC/secondOwnCloud".

The next time user2 login he will get a notification that he received a server-to-server share with the option to accept/decline it. If he accept it the share will be mounted. In both cases a event will be send back to user1 and add a notification to the activity stream that the share was accepted/declined.

If user1 decides to unshare the file again from user2 the share will automatically be removed from the second ownCloud server and user2 will see a notification in his activity stream that user1@myPC/firstOwnCloud has unshared the file/folder from him.

1 files changed, 12 insertions, 0 deletions

diff --git a/lib/public/share_backend.php b/lib/public/share_backend.php
index 6ab234aecf0..1ae63d4c1db 100644
--- a/lib/public/share_backend.php
+++ b/lib/public/share_backend.php
@@ -65,4 +65,16 @@ interface Share_Backend {
 	 */
 	public function formatItems($items, $format, $parameters = null);
 
+	/**
+	 * Check if a given share type is allowd by the back-end
+	 *
+	 * @param int $shareType share type
+	 * @return boolean
+	 *
+	 * The back-end can enable/disable specific share types. Just return true if
+	 * the back-end doesn't provide any specific settings for it and want to allow
+	 * all share types defined by the share API
+	 */
+	public function isShareTypeAllowed($shareType);
+
 }