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package test
import (
"testing"
"github.com/miekg/dns"
)
// Start 2 tests server, server A will proxy to B, server B is an CH server.
func TestProxyToChaosServer(t *testing.T) {
t.Parallel()
corefile := `.:0 {
chaos CoreDNS-001 miek@miek.nl
}`
chaos, udpChaos, _, err := CoreDNSServerAndPorts(corefile)
if err != nil {
t.Fatalf("Could not get CoreDNS serving instance: %s", err)
}
defer chaos.Stop()
corefileProxy := `.:0 {
forward . ` + udpChaos + `
}`
proxy, udp, _, err := CoreDNSServerAndPorts(corefileProxy)
if err != nil {
t.Fatalf("Could not get CoreDNS serving instance")
}
defer proxy.Stop()
chaosTest(t, udpChaos)
chaosTest(t, udp)
// chaosTest(t, tcp, "tcp"), commented out because we use the original transport to reach the
// proxy and we only forward to the udp port.
}
func chaosTest(t *testing.T, server string) {
m := new(dns.Msg)
m.Question = make([]dns.Question, 1)
m.Question[0] = dns.Question{Qclass: dns.ClassCHAOS, Name: "version.bind.", Qtype: dns.TypeTXT}
r, err := dns.Exchange(m, server)
if err != nil {
t.Fatalf("Could not send message: %s", err)
}
if r.Rcode != dns.RcodeSuccess || len(r.Answer) == 0 {
t.Fatalf("Expected successful reply, got %s", dns.RcodeToString[r.Rcode])
}
if r.Answer[0].String() != `version.bind. 0 CH TXT "CoreDNS-001"` {
t.Fatalf("Expected version.bind. reply, got %s", r.Answer[0].String())
}
}
func TestReverseExpansion(t *testing.T) {
// this test needs a fixed port, because with :0 the expanded reverse zone will listen on different
// addresses and we can't check which ones...
corefile := `10.0.0.0/15:5053 {
whoami
}`
server, udp, _, err := CoreDNSServerAndPorts(corefile)
if err != nil {
t.Fatalf("Could not get CoreDNS serving instance: %s", err)
}
defer server.Stop()
m := new(dns.Msg)
m.SetQuestion("whoami.0.10.in-addr.arpa.", dns.TypeA)
r, err := dns.Exchange(m, udp)
if err != nil {
t.Fatalf("Could not send message: %s", err)
}
if r.Rcode != dns.RcodeSuccess {
t.Errorf("Expected NOERROR, got %d", r.Rcode)
}
if len(r.Extra) != 2 {
t.Errorf("Expected 2 RRs in additional section, got %d", len(r.Extra))
}
m.SetQuestion("whoami.1.10.in-addr.arpa.", dns.TypeA)
r, err = dns.Exchange(m, udp)
if err != nil {
t.Fatalf("Could not send message: %s", err)
}
if r.Rcode != dns.RcodeSuccess {
t.Errorf("Expected NOERROR, got %d", r.Rcode)
}
if len(r.Extra) != 2 {
t.Errorf("Expected 2 RRs in additional section, got %d", len(r.Extra))
}
// should be refused
m.SetQuestion("whoami.2.10.in-addr.arpa.", dns.TypeA)
r, err = dns.Exchange(m, udp)
if err != nil {
t.Fatalf("Could not send message: %s", err)
}
if r.Rcode != dns.RcodeRefused {
t.Errorf("Expected REFUSED, got %d", r.Rcode)
}
if len(r.Extra) != 0 {
t.Errorf("Expected 0 RRs in additional section, got %d", len(r.Extra))
}
}
|
