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wgengine/tsdns: delegate bonjour service rdns requests

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While we're here, parseQuery into a plain function.
This is helpful for fuzzing. (Which I did a bit of. Didn't find anything.)

And clean up a few minor things.

Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>
This commit is contained in:
Josh Bleecher Snyder
2020-09-23 12:05:51 -07:00
committed by Josh Bleecher Snyder
parent 2d0ed99672
commit 1fd10061fd
2 changed files with 60 additions and 4 deletions
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wgengine/tsdns/tsdns_test.go
+23
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@@ -684,6 +684,29 @@ func TestAllocs(t *testing.T) {
}
}
func TestTrimRDNSBonjourPrefix(t *testing.T) {
tests := []struct {
in string
want bool
}{
{"b._dns-sd._udp.0.10.20.172.in-addr.arpa.", true},
{"db._dns-sd._udp.0.10.20.172.in-addr.arpa.", true},
{"r._dns-sd._udp.0.10.20.172.in-addr.arpa.", true},
{"dr._dns-sd._udp.0.10.20.172.in-addr.arpa.", true},
{"lb._dns-sd._udp.0.10.20.172.in-addr.arpa.", true},
{"qq._dns-sd._udp.0.10.20.172.in-addr.arpa.", false},
{"0.10.20.172.in-addr.arpa.", false},
{"i-have-no-dot", false},
}
for _, test := range tests {
got := hasRDNSBonjourPrefix(test.in)
if got != test.want {
t.Errorf("trimRDNSBonjourPrefix(%q) = %v, want %v", test.in, got, test.want)
}
}
}
func BenchmarkFull(b *testing.B) {
dnsHandleFunc("test.site.", resolveToIP(testipv4, testipv6, "dns.test.site."))