wireguard-android/app/src/main/java/com/wireguard/android/ProfileServiceInterface.java
Samuel Holland 5d5cdf54fa ProfileService: Rework profile updating
This should help discourage editing a Profile without making a copy
first, since the caller has to keep track of the old Profile as well.

ProfileAdder has been updated to prevent adding duplicate profiles. It
checks once in the constructor, so the caller can catch the exception
and pass the error back to the UI. It checks again in the worker thread
to prevent any race from happening if a profile is added twice quickly.
Either the file exists, or it doesn't.

Additionally, this change solves the race condition when the old
profile is removed before it is updated; previously this would lead
to the profile being re-added. Now, ProfileRemover will fail and the
profile will stay removed.

Finally, updating a profile's name should now work correctly. There were
previously multiple bugs with that (the old profile wasn't removed, the
new one could duplicate a name, the new one could overwrite some random
other one, etc.).

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
2017-08-01 01:38:39 -05:00

71 lines
2.9 KiB
Java

package com.wireguard.android;
import android.databinding.ObservableList;
import com.wireguard.config.Profile;
/**
* Interface for the background connection service.
*/
public interface ProfileServiceInterface {
/**
* Attempt to set up and enable an interface for this profile. The profile's connection state
* will be updated if connection is successful. If this profile is already connected, or it is
* not a known profile, no changes will be made.
*
* @param profile The profile (in the list of known profiles) to use for this connection.
*/
void connectProfile(Profile profile);
/**
* Creates a deep copy of an existing profile that can be modified and then passed to
* saveProfile. If the given profile is not a known profile, or the profile cannot be copied,
* this function returns null.
*
* @param profile The existing profile (in the list of known profiles) to copy.
* @return A copy of the profile that can be freely modified.
*/
Profile copyProfileForEditing(Profile profile);
/**
* Attempt to disable and tear down an interface for this profile. The profile's connection
* state will be updated if disconnection is successful. If this profile is already
* disconnected, or it is not a known profile, no changes will be made.
*
* @param profile The profile (in the list of known profiles) to disconnect.
*/
void disconnectProfile(Profile profile);
/**
* Retrieve a list of profiles known and managed by this service. Profiles in this list must not
* be modified directly. If a profile is to be updated, first create a copy of it by calling
* copyProfileForEditing().
*
* @return The list of known profiles.
*/
ObservableList<Profile> getProfiles();
/**
* Remove a profile from being managed by this service. If the profile is currently connected,
* it will be disconnected before it is removed. If successful, configuration for this profile
* will be removed from persistent storage. If the profile is not a known profile, no changes
* will be made.
*
* @param profile The profile (in the list of known profiles) to remove.
*/
void removeProfile(Profile profile);
/**
* Replace the given profile, or add a new profile if oldProfile is null.
* If the profile exists and is currently connected, it will be disconnected before the
* replacement, and the service will attempt to reconnect it afterward. If the profile is new,
* it will be set to the disconnected state. If successful, configuration for this profile will
* be saved to persistent storage.
*
* @param oldProfile The existing profile to replace, or null to add the new profile.
* @param newProfile The profile to add, or a copy of the profile to replace.
*/
void saveProfile(Profile oldProfile, Profile newProfile);
}