Option to disable auth key expiration

[rakema01]

Would be a neat thing to have when the focus of the site is to seed for long periods of time. Also especially helpful when you've got too many torrents and having to change the tracker URL to match the key is a pain. Of course, there's the option to change the expiry length to a random huge number but having an option to outright disable expiry checks is a bit cleaner in my opinion. In its place, we could have an option for the key be manually regenerated when needed.

[mickvandijke]

Good idea. I will make it so that if valid_until is set to 0, the key won't expire.

[josecelano]

Hey @WarmBeer after the latest refactorings we have:

• Keys
• ExpiringKeys

pub struct Key(String);

pub struct ExpiringKey {
    pub key: Key,
    pub valid_until: DurationSinceUnixEpoch,
}

Maybe what we could do if to add a new collection of permanent keys to the tracker:

Current tracker attributes:

pub struct Tracker {
    pub config: Arc<Configuration>,
    mode: TrackerMode,
    keys: RwLock<std::collections::HashMap<Key, auth::ExpiringKey>>,
    whitelist: RwLock<std::collections::HashSet<InfoHash>>,
    torrents: RwLock<std::collections::BTreeMap<InfoHash, torrent::Entry>>,
    stats_event_sender: Option<Box<dyn statistics::EventSender>>,
    stats_repository: statistics::Repo,
    pub database: Box<dyn Database>,
}

New struct after the change:

pub struct Tracker {
    // ...
    expiring_keys: RwLock<std::collections::HashMap<Key, auth::ExpiringKey>>,
    permanent_keys: RwLock<std::collections::HashMap<Key, auth::ExpiringKey>>,
    // ...
}

We also need to change the API auth endpoint to reflect that change. We can use a single resource again where the expiry date is optional or we could have two different resources:

• /api/v1/keys/permanent
• /api/v1/keys/expiring

I've been working on that endpoint today: PR.

Alternatively, we could change the name again and allow the expiry_time to be optional:

pub struct Key(String);

pub struct RegisteredKey {
    pub key: Key,
    pub maybe_valid_until: Option<DurationSinceUnixEpoch>,
}

cc @da2ce7