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tailscale/ipn/ipnauth
Nick Khyl 02ad21717f ipn/ipn{auth,server,local}: initial support for the always-on mode
In this PR, we update LocalBackend to set WantRunning=true when applying policy settings
to the current profile's prefs, if the "always-on" mode is enabled.

We also implement a new (*LocalBackend).EditPrefsAs() method, which is like EditPrefs
but accepts an actor (e.g., a LocalAPI client's identity) that initiated the change.
If WantRunning is being set to false, the new EditPrefsAs method checks whether the actor
has ipnauth.Disconnect access to the profile and propagates an error if they do not.

Finally, we update (*ipnserver.actor).CheckProfileAccess to allow a disconnect
only if the "always-on" mode is not enabled by the AlwaysOn policy setting.

This is not a comprehensive solution to the "always-on" mode across platforms,
as instead of disconnecting a user could achieve the same effect by creating
a new empty profile, initiating a reauth, or by deleting the profile.
These are the things we should address in future PRs.

Updates #14823

Signed-off-by: Nick Khyl <nickk@tailscale.com>
12 months ago
..
access.go ipn/ipn{auth,server,local}: initial support for the always-on mode 12 months ago
actor.go ipn/{ipnauth, ipnserver}: extend the ipnauth.Actor interface with a CheckProfileAccess method 12 months ago
ipnauth.go go.mod, all: move away from inet.af domain seized by Taliban 2 years ago
ipnauth_notwindows.go ipn/{ipnauth,ipnlocal,ipnserver}: send the auth URL to the user who started interactive login 1 year ago
ipnauth_windows.go ipn/ipnserver: always allow Windows SYSTEM user to connect 2 years ago
self.go ipn/ipnauth: implement an Actor representing tailscaled itself 12 months ago
test_actor.go ipn/{ipnauth, ipnserver}: extend the ipnauth.Actor interface with a CheckProfileAccess method 12 months ago