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ipn/ipnlocal: empty allowed exit nodes syspolicy should be treated as allow all

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Updates tailscale/corp#19681

If the syspolicy returns an empty list of allowed exit nodes,
this should be treated as "allow all" rather than "allow none"

Signed-off-by: Jonathan Nobels <jonathan@tailscale.com>
This commit is contained in:
Jonathan Nobels 2024-06-03 10:52:00 -04:00
parent 01847e0123
commit 5be738b118
1 changed files with 1 additions and 1 deletions
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2
ipn/ipnlocal/local.go
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@ -6456,7 +6456,7 @@ func suggestExitNode(report *netcheck.Report, netMap *netmap.NetworkMap, r *rand
var allowedCandidates set.Set[string] var allowedCandidates set.Set[string]
if allowed, err := syspolicy.GetStringArray(syspolicy.AllowedSuggestedExitNodes, nil); err != nil { if allowed, err := syspolicy.GetStringArray(syspolicy.AllowedSuggestedExitNodes, nil); err != nil {
return res, fmt.Errorf("unable to read %s policy: %w", syspolicy.AllowedSuggestedExitNodes, err) return res, fmt.Errorf("unable to read %s policy: %w", syspolicy.AllowedSuggestedExitNodes, err)
} else if allowed != nil { } else if allowed != nil && len(allowed) > 0 {
allowedCandidates = set.SetOf(allowed) allowedCandidates = set.SetOf(allowed)
} }
candidates := make([]tailcfg.NodeView, 0, len(netMap.Peers)) candidates := make([]tailcfg.NodeView, 0, len(netMap.Peers))