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types/config, types/node: model default-auto-update from auto_update.enabled

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Tailscale stamps tailcfg.NodeAttrDefaultAutoUpdate on every node's
CapMap with a JSON bool reflecting the tailnet-wide auto-update
default. Headscale grows an auto_update.enabled config option and
emits the cap accordingly from TailNode -- the cap leaves the
unmodelledTailnetStateCaps strip list and is compared in full by the
nodeAttrs compat suite.

testNodeAttrsSuccess drives cfg.AutoUpdate.Enabled from
tf.Input.Tailnet.Settings.DevicesAutoUpdatesOn so each capture's
expected emission matches the SaaS state it was taken under. Two
captures cover both branches:

  - nodeattrs-tailnet-devices-auto-updates-on  -> [true]
  - nodeattrs-tailnet-devices-auto-updates-off -> [false]

The Tailscale v2 TailnetSettings API does not expose the Send Files
toggle, so the compat suite cannot vary cfg.Taildrop.Enabled per
capture. TestTaildropDisabledWithholdsFileSharingCap covers the off
path directly in servertest.
This commit is contained in:
Kristoffer Dalby
2026-05-11 16:28:09 +00:00
parent 408f4022e4
commit 64d13f77e8
10 changed files with 9519 additions and 854 deletions
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12
hscontrol/types/node.go
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@@ -1203,6 +1203,18 @@ func (nv NodeView) TailNode(
capMap[tailcfg.CapabilityFileSharing] = []tailcfg.RawMessage{}
}
// default-auto-update is always emitted; the value is a JSON bool
// reflecting cfg.AutoUpdate.Enabled. Clients read this on first
// netmap and store the default locally; subsequent control-plane
// changes are ignored unless the client has not yet opted in or
// out.
autoUpdateVal := tailcfg.RawMessage("false")
if cfg.AutoUpdate.Enabled {
autoUpdateVal = tailcfg.RawMessage("true")
}
capMap[tailcfg.NodeAttrDefaultAutoUpdate] = []tailcfg.RawMessage{autoUpdateVal}
// Policy nodeAttrs overlay the baseline on the self view. Peers
// pass nil; their CapMap is replaced downstream by [policyv2.PeerCapMap].
maps.Copy(capMap, selfPolicyCaps)