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cmd/tailscale: use tsaddr helpers

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Updates #cleanup

Signed-off-by: Kristoffer Dalby <kristoffer@tailscale.com>
This commit is contained in:
Kristoffer Dalby 2024-09-25 11:09:49 +02:00 committed by Kristoffer Dalby
parent 3dc33a0a5b
commit 0909431660
1 changed files with 4 additions and 32 deletions
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36
cmd/tailscale/cli/up.go
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@ -32,10 +32,12 @@
"tailscale.com/ipn"
"tailscale.com/ipn/ipnstate"
"tailscale.com/net/netutil"
"tailscale.com/net/tsaddr"
"tailscale.com/safesocket"
"tailscale.com/tailcfg"
"tailscale.com/types/logger"
"tailscale.com/types/preftype"
"tailscale.com/types/views"
"tailscale.com/util/dnsname"
"tailscale.com/version"
"tailscale.com/version/distro"
@ -1015,7 +1017,7 @@ func prefsToFlags(env upCheckEnv, prefs *ipn.Prefs) (flagVal map[string]any) {
set(prefs.OperatorUser)
case "advertise-routes":
var sb strings.Builder
for i, r := range withoutExitNodes(prefs.AdvertiseRoutes) {
for i, r := range tsaddr.WithoutExitRoutes(views.SliceOf(prefs.AdvertiseRoutes)).All() {
if i > 0 {
sb.WriteByte(',')
}
@ -1023,7 +1025,7 @@ func prefsToFlags(env upCheckEnv, prefs *ipn.Prefs) (flagVal map[string]any) {
}
set(sb.String())
case "advertise-exit-node":
set(hasExitNodeRoutes(prefs.AdvertiseRoutes))
set(tsaddr.ContainsExitRoutes(views.SliceOf(prefs.AdvertiseRoutes)))
case "advertise-connector":
set(prefs.AppConnector.Advertise)
case "snat-subnet-routes":
@ -1057,36 +1059,6 @@ func fmtFlagValueArg(flagName string, val any) string {
return fmt.Sprintf("--%s=%v", flagName, shellquote.Join(fmt.Sprint(val)))
}
func hasExitNodeRoutes(rr []netip.Prefix) bool {
var v4, v6 bool
for _, r := range rr {
if r.Bits() == 0 {
if r.Addr().Is4() {
v4 = true
} else if r.Addr().Is6() {
v6 = true
}
}
}
return v4 && v6
}
// withoutExitNodes returns rr unchanged if it has only 1 or 0 /0
// routes. If it has both IPv4 and IPv6 /0 routes, then it returns
// a copy with all /0 routes removed.
func withoutExitNodes(rr []netip.Prefix) []netip.Prefix {
if !hasExitNodeRoutes(rr) {
return rr
}
var out []netip.Prefix
for _, r := range rr {
if r.Bits() > 0 {
out = append(out, r)
}
}
return out
}
// exitNodeIP returns the exit node IP from p, using st to map
// it from its ID form to an IP address if needed.
func exitNodeIP(p *ipn.Prefs, st *ipnstate.Status) (ip netip.Addr) {