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Signed-off-by: Artem Glazychev <artem.glazychev@xored.com> Signed-off-by: Artem Glazychev <artem.glazychev@xored.com>
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| @@ -0,0 +1,88 @@ | ||
| // Copyright (c) 2022 Cisco and/or its affiliates. | ||
| // | ||
| // SPDX-License-Identifier: Apache-2.0 | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at: | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
|
|
||
| package memory_test | ||
|
|
||
| import ( | ||
| "context" | ||
| "net" | ||
| "testing" | ||
| "time" | ||
|
|
||
| "github.com/miekg/dns" | ||
| "github.com/stretchr/testify/require" | ||
|
|
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| "github.com/networkservicemesh/sdk/pkg/tools/dnsutils/memory" | ||
| "github.com/networkservicemesh/sdk/pkg/tools/dnsutils/next" | ||
| ) | ||
|
|
||
| type responseWriter struct { | ||
| dns.ResponseWriter | ||
| Response *dns.Msg | ||
| } | ||
|
|
||
| func (r *responseWriter) WriteMsg(m *dns.Msg) error { | ||
| r.Response = m | ||
| return nil | ||
| } | ||
|
|
||
| func TestDomainSearches(t *testing.T) { | ||
| ctx, cancel := context.WithTimeout(context.Background(), time.Second) | ||
| defer cancel() | ||
|
|
||
| // Store two entries for IPv4 and IPv6 | ||
| records := new(memory.Map) | ||
| records.Store("example.com.", []net.IP{net.ParseIP("1.1.1.1")}) | ||
| records.Store("example.net.", []net.IP{net.ParseIP("2001:db8::68")}) | ||
|
|
||
| handler := next.NewDNSHandler( | ||
| memory.NewDNSHandler(records), | ||
| ) | ||
| rw := &responseWriter{} | ||
| m := &dns.Msg{} | ||
|
|
||
| // Get example.com IPv4. Expect success | ||
| m.SetQuestion(dns.Fqdn("example.com"), dns.TypeA) | ||
| handler.ServeDNS(ctx, rw, m) | ||
|
|
||
| resp := rw.Response.Copy() | ||
| require.Equal(t, resp.MsgHdr.Rcode, dns.RcodeSuccess) | ||
| require.NotNil(t, resp.Answer) | ||
| require.Equal(t, resp.Answer[0].(*dns.A).A.String(), "1.1.1.1") | ||
|
|
||
| // Get example.com IPv6. Expect NXDomain | ||
| m.SetQuestion(dns.Fqdn("example.com"), dns.TypeAAAA) | ||
| handler.ServeDNS(ctx, rw, m) | ||
|
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| resp = rw.Response.Copy() | ||
| require.Equal(t, resp.MsgHdr.Rcode, dns.RcodeNameError) | ||
|
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||
| // Get example.net IPv4. Expect NXDomain | ||
| m.SetQuestion(dns.Fqdn("example.net"), dns.TypeA) | ||
| handler.ServeDNS(ctx, rw, m) | ||
|
|
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| resp = rw.Response.Copy() | ||
| require.Equal(t, resp.MsgHdr.Rcode, dns.RcodeNameError) | ||
|
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||
| // Get example.net IPv6. Expect success | ||
| m.SetQuestion(dns.Fqdn("example.net"), dns.TypeAAAA) | ||
| handler.ServeDNS(ctx, rw, m) | ||
|
|
||
| resp = rw.Response.Copy() | ||
| require.Equal(t, resp.MsgHdr.Rcode, dns.RcodeSuccess) | ||
| require.NotNil(t, resp.Answer) | ||
| require.Equal(t, resp.Answer[0].(*dns.AAAA).AAAA.String(), "2001:db8::68") | ||
| } |