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cmd/tailscale/cli: [set] handle selectively modifying routes/exit node

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Noticed this while debugging something else, we would reset all routes if
either `--advertise-exit-node` or `--advertise-routes` were set. This handles
correctly updating them.

Also added tests.

Signed-off-by: Maisem Ali <maisem@tailscale.com>
This commit is contained in:
Maisem Ali
2022-11-12 14:53:36 +05:00
committed by Maisem Ali
parent 26d1fc867e
commit 8e85227059
7 changed files with 199 additions and 19 deletions
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11
net/tsaddr/tsaddr.go
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@@ -11,6 +11,7 @@ import (
"net/netip"
"sync"
"golang.org/x/exp/slices"
"tailscale.com/net/netaddr"
)
@@ -266,6 +267,16 @@ func AllIPv6() netip.Prefix { return allIPv6 }
// ExitRoutes returns a slice containing AllIPv4 and AllIPv6.
func ExitRoutes() []netip.Prefix { return []netip.Prefix{allIPv4, allIPv6} }
// SortPrefixes sorts the prefixes in place.
func SortPrefixes(p []netip.Prefix) {
slices.SortFunc(p, func(ri, rj netip.Prefix) bool {
if ri.Addr() == rj.Addr() {
return ri.Bits() < rj.Bits()
}
return ri.Addr().Less(rj.Addr())
})
}
// FilterPrefixes returns a new slice, not aliasing in, containing elements of
// in that match f.
func FilterPrefixesCopy(in []netip.Prefix, f func(netip.Prefix) bool) []netip.Prefix {