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remove policy handling for old capver

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Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
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Kristoffer Dalby 2025-02-14 16:51:26 +01:00
parent c61fbe9c5f
commit 91868056f9
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1 changed files with 6 additions and 20 deletions
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16
hscontrol/mapper/mapper.go
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@ -541,27 +541,13 @@ func appendPeerChanges(
resp.UserProfiles = profiles
resp.SSHPolicy = sshPolicy
// 81: 2023-11-17: MapResponse.PacketFilters (incremental packet filter updates)
if capVer >= 81 {
// CapVer 81: 2023-11-17: MapResponse.PacketFilters (incremental packet filter updates)
// Currently, we do not send incremental package filters, however using the
// new PacketFilters field and "base" allows us to send a full update when we
// have to send an empty list, avoiding the hack in the else block.
resp.PacketFilters = map[string][]tailcfg.FilterRule{
"base": policy.ReduceFilterRules(node, filter),
}
} else {
// This is a hack to avoid sending an empty list of packet filters.
// Since tailcfg.PacketFilter has omitempty, any empty PacketFilter will
// be omitted, causing the client to consider it unchanged, keeping the
// previous packet filter. Worst case, this can cause a node that previously
// has access to a node to _not_ loose access if an empty (allow none) is sent.
reduced := policy.ReduceFilterRules(node, filter)
if len(reduced) > 0 {
resp.PacketFilter = reduced
} else {
resp.PacketFilter = filter
}
}
return nil
}