mirror of
https://github.com/coredns/coredns.git
synced 2025-10-31 02:03:20 -04:00
ba1efee4f1
Every plugin needs to deal with EDNS0 and should call Scrub to make a message fit the client's buffer. Move this functionality into the server and wrapping the ResponseWriter into a ScrubWriter that handles these bits for us. Result: Less code and faster, because multiple chained plugins could all be calling scrub and SizeAndDo - now there is just one place. Most tests in file/* and dnssec/* needed adjusting because in those unit tests you don't see OPT RRs anymore. The DNSSEC signer was also looking at the returned OPT RR to see if it needed to sign - as those are now added by the server (and thus later), this needed to change slightly. Scrub itself still exist (for backward compat reasons), but has been made a noop. Scrub has been renamed to scrub as it should not be used by external plugins. Fixes: #2010 Signed-off-by: Miek Gieben <miek@miek.nl>
297 lines
9.9 KiB
Go
297 lines
9.9 KiB
Go
package file
|
|
|
|
import (
|
|
"context"
|
|
"strings"
|
|
"testing"
|
|
|
|
"github.com/coredns/coredns/plugin/pkg/dnstest"
|
|
"github.com/coredns/coredns/plugin/test"
|
|
|
|
"github.com/miekg/dns"
|
|
)
|
|
|
|
// RFC 6672, Section 2.2. Assuming QTYPE != DNAME.
|
|
var dnameSubstitutionTestCases = []struct {
|
|
qname string
|
|
owner string
|
|
target string
|
|
expected string
|
|
}{
|
|
{"com.", "example.com.", "example.net.", ""},
|
|
{"example.com.", "example.com.", "example.net.", ""},
|
|
{"a.example.com.", "example.com.", "example.net.", "a.example.net."},
|
|
{"a.b.example.com.", "example.com.", "example.net.", "a.b.example.net."},
|
|
{"ab.example.com.", "b.example.com.", "example.net.", ""},
|
|
{"foo.example.com.", "example.com.", "example.net.", "foo.example.net."},
|
|
{"a.x.example.com.", "x.example.com.", "example.net.", "a.example.net."},
|
|
{"a.example.com.", "example.com.", "y.example.net.", "a.y.example.net."},
|
|
{"cyc.example.com.", "example.com.", "example.com.", "cyc.example.com."},
|
|
{"cyc.example.com.", "example.com.", "c.example.com.", "cyc.c.example.com."},
|
|
{"shortloop.x.x.", "x.", ".", "shortloop.x."},
|
|
{"shortloop.x.", "x.", ".", "shortloop."},
|
|
}
|
|
|
|
func TestDNAMESubstitution(t *testing.T) {
|
|
for i, tc := range dnameSubstitutionTestCases {
|
|
result := substituteDNAME(tc.qname, tc.owner, tc.target)
|
|
if result != tc.expected {
|
|
if result == "" {
|
|
result = "<no match>"
|
|
}
|
|
|
|
t.Errorf("Case %d: Expected %s -> %s, got %v", i, tc.qname, tc.expected, result)
|
|
return
|
|
}
|
|
}
|
|
}
|
|
|
|
var dnameTestCases = []test.Case{
|
|
{
|
|
Qname: "dname.miek.nl.", Qtype: dns.TypeDNAME,
|
|
Answer: []dns.RR{
|
|
test.DNAME("dname.miek.nl. 1800 IN DNAME test.miek.nl."),
|
|
},
|
|
Ns: miekAuth,
|
|
},
|
|
{
|
|
Qname: "dname.miek.nl.", Qtype: dns.TypeA,
|
|
Answer: []dns.RR{
|
|
test.A("dname.miek.nl. 1800 IN A 127.0.0.1"),
|
|
},
|
|
Ns: miekAuth,
|
|
},
|
|
{
|
|
Qname: "dname.miek.nl.", Qtype: dns.TypeMX,
|
|
Answer: []dns.RR{},
|
|
Ns: []dns.RR{
|
|
test.SOA("miek.nl. 1800 IN SOA linode.atoom.net. miek.miek.nl. 1282630057 14400 3600 604800 14400"),
|
|
},
|
|
},
|
|
{
|
|
Qname: "a.dname.miek.nl.", Qtype: dns.TypeA,
|
|
Answer: []dns.RR{
|
|
test.CNAME("a.dname.miek.nl. 1800 IN CNAME a.test.miek.nl."),
|
|
test.A("a.test.miek.nl. 1800 IN A 139.162.196.78"),
|
|
test.DNAME("dname.miek.nl. 1800 IN DNAME test.miek.nl."),
|
|
},
|
|
Ns: miekAuth,
|
|
},
|
|
{
|
|
Qname: "www.dname.miek.nl.", Qtype: dns.TypeA,
|
|
Answer: []dns.RR{
|
|
test.A("a.test.miek.nl. 1800 IN A 139.162.196.78"),
|
|
test.DNAME("dname.miek.nl. 1800 IN DNAME test.miek.nl."),
|
|
test.CNAME("www.dname.miek.nl. 1800 IN CNAME www.test.miek.nl."),
|
|
test.CNAME("www.test.miek.nl. 1800 IN CNAME a.test.miek.nl."),
|
|
},
|
|
Ns: miekAuth,
|
|
},
|
|
}
|
|
|
|
func TestLookupDNAME(t *testing.T) {
|
|
zone, err := Parse(strings.NewReader(dbMiekNLDNAME), testzone, "stdin", 0)
|
|
if err != nil {
|
|
t.Fatalf("Expect no error when reading zone, got %q", err)
|
|
}
|
|
|
|
fm := File{Next: test.ErrorHandler(), Zones: Zones{Z: map[string]*Zone{testzone: zone}, Names: []string{testzone}}}
|
|
ctx := context.TODO()
|
|
|
|
for _, tc := range dnameTestCases {
|
|
m := tc.Msg()
|
|
|
|
rec := dnstest.NewRecorder(&test.ResponseWriter{})
|
|
_, err := fm.ServeDNS(ctx, rec, m)
|
|
if err != nil {
|
|
t.Errorf("Expected no error, got %v\n", err)
|
|
return
|
|
}
|
|
|
|
resp := rec.Msg
|
|
test.SortAndCheck(t, resp, tc)
|
|
}
|
|
}
|
|
|
|
var dnameDnssecTestCases = []test.Case{
|
|
{
|
|
// We have no auth section, because the test zone does not have nameservers.
|
|
Qname: "ns.example.org.", Qtype: dns.TypeA,
|
|
Answer: []dns.RR{
|
|
test.A("ns.example.org. 1800 IN A 127.0.0.1"),
|
|
},
|
|
},
|
|
{
|
|
Qname: "dname.example.org.", Qtype: dns.TypeDNAME, Do: true,
|
|
Answer: []dns.RR{
|
|
test.DNAME("dname.example.org. 1800 IN DNAME test.example.org."),
|
|
test.RRSIG("dname.example.org. 1800 IN RRSIG DNAME 5 3 1800 20170702091734 20170602091734 54282 example.org. HvXtiBM="),
|
|
},
|
|
},
|
|
{
|
|
Qname: "a.dname.example.org.", Qtype: dns.TypeA, Do: true,
|
|
Answer: []dns.RR{
|
|
test.CNAME("a.dname.example.org. 1800 IN CNAME a.test.example.org."),
|
|
test.DNAME("dname.example.org. 1800 IN DNAME test.example.org."),
|
|
test.RRSIG("dname.example.org. 1800 IN RRSIG DNAME 5 3 1800 20170702091734 20170602091734 54282 example.org. HvXtiBM="),
|
|
},
|
|
},
|
|
}
|
|
|
|
func TestLookupDNAMEDNSSEC(t *testing.T) {
|
|
zone, err := Parse(strings.NewReader(dbExampleDNAMESigned), testzone, "stdin", 0)
|
|
if err != nil {
|
|
t.Fatalf("Expect no error when reading zone, got %q", err)
|
|
}
|
|
|
|
fm := File{Next: test.ErrorHandler(), Zones: Zones{Z: map[string]*Zone{"example.org.": zone}, Names: []string{"example.org."}}}
|
|
ctx := context.TODO()
|
|
|
|
for _, tc := range dnameDnssecTestCases {
|
|
m := tc.Msg()
|
|
|
|
rec := dnstest.NewRecorder(&test.ResponseWriter{})
|
|
_, err := fm.ServeDNS(ctx, rec, m)
|
|
if err != nil {
|
|
t.Errorf("Expected no error, got %v\n", err)
|
|
return
|
|
}
|
|
|
|
resp := rec.Msg
|
|
test.SortAndCheck(t, resp, tc)
|
|
}
|
|
}
|
|
|
|
const dbMiekNLDNAME = `
|
|
$TTL 30M
|
|
$ORIGIN miek.nl.
|
|
@ IN SOA linode.atoom.net. miek.miek.nl. (
|
|
1282630057 ; Serial
|
|
4H ; Refresh
|
|
1H ; Retry
|
|
7D ; Expire
|
|
4H ) ; Negative Cache TTL
|
|
IN NS linode.atoom.net.
|
|
IN NS ns-ext.nlnetlabs.nl.
|
|
IN NS omval.tednet.nl.
|
|
IN NS ext.ns.whyscream.net.
|
|
|
|
test IN MX 1 aspmx.l.google.com.
|
|
IN MX 5 alt1.aspmx.l.google.com.
|
|
IN MX 5 alt2.aspmx.l.google.com.
|
|
IN MX 10 aspmx2.googlemail.com.
|
|
IN MX 10 aspmx3.googlemail.com.
|
|
a.test IN A 139.162.196.78
|
|
IN AAAA 2a01:7e00::f03c:91ff:fef1:6735
|
|
www.test IN CNAME a.test
|
|
|
|
dname IN DNAME test
|
|
dname IN A 127.0.0.1
|
|
a.dname IN A 127.0.0.1
|
|
`
|
|
|
|
const dbExampleDNAMESigned = `
|
|
; File written on Fri Jun 2 10:17:34 2017
|
|
; dnssec_signzone version 9.10.3-P4-Debian
|
|
example.org. 1800 IN SOA a.example.org. b.example.org. (
|
|
1282630057 ; serial
|
|
14400 ; refresh (4 hours)
|
|
3600 ; retry (1 hour)
|
|
604800 ; expire (1 week)
|
|
14400 ; minimum (4 hours)
|
|
)
|
|
1800 RRSIG SOA 5 2 1800 (
|
|
20170702091734 20170602091734 54282 example.org.
|
|
mr5eQtFs1GubgwaCcqrpiF6Cgi822OkESPeV
|
|
X0OJYq3JzthJjHw8TfYAJWQ2yGqhlePHir9h
|
|
FT/uFZdYyytHq+qgIUbJ9IVCrq0gZISZdHML
|
|
Ry1DNffMR9CpD77KocOAUABfopcvH/3UGOHn
|
|
TFxkAr447zPaaoC68JYGxYLfZk8= )
|
|
1800 NS ns.example.org.
|
|
1800 RRSIG NS 5 2 1800 (
|
|
20170702091734 20170602091734 54282 example.org.
|
|
McM4UdMxkscVQkJnnEbdqwyjpPgq5a/EuOLA
|
|
r2MvG43/cwOaWULiZoNzLi5Rjzhf+GTeVTan
|
|
jw6EsL3gEuYI1nznwlLQ04/G0XAHjbq5VvJc
|
|
rlscBD+dzf774yfaTjRNoeo2xTem6S7nyYPW
|
|
Y+1f6xkrsQPLYJfZ6VZ9QqyupBw= )
|
|
14400 NSEC dname.example.org. NS SOA RRSIG NSEC DNSKEY
|
|
14400 RRSIG NSEC 5 2 14400 (
|
|
20170702091734 20170602091734 54282 example.org.
|
|
VT+IbjDFajM0doMKFipdX3+UXfCn3iHIxg5x
|
|
LElp4Q/YddTbX+6tZf53+EO+G8Kye3JDLwEl
|
|
o8VceijNeF3igZ+LiZuXCei5Qg/TJ7IAUnAO
|
|
xd85IWwEYwyKkKd6Z2kXbAN2pdcHE8EmboQd
|
|
wfTr9oyWhpZk1Z+pN8vdejPrG0M= )
|
|
1800 DNSKEY 256 3 5 (
|
|
AwEAAczLlmTk5bMXUzpBo/Jta6MWSZYy3Nfw
|
|
gz8t/pkfSh4IlFF6vyXZhEqCeQsCBdD7ltkD
|
|
h5qd4A+nFrYOMwsi5XIjoHMlJN15xwFS9EgS
|
|
ZrZmuxePIEiYB5KccEf9JQMgM1t07Iu1FnrY
|
|
02OuAqGWcO4tuyTLaK3QP4MLQOfAgKqf
|
|
) ; ZSK; alg = RSASHA1; key id = 54282
|
|
1800 RRSIG DNSKEY 5 2 1800 (
|
|
20170702091734 20170602091734 54282 example.org.
|
|
MBgSRtZ6idJblLIHxZWpWL/1oqIwImb1mkl7
|
|
hDFxqV6Hw19yLX06P7gcJEWiisdZBkVEfcOK
|
|
LeMJly05vgKfrMzLgIu2Ry4bL8AMKc8NMXBG
|
|
b1VDCEBW69P2omogj2KnORHDCZQr/BX9+wBU
|
|
5rIMTTKlMSI5sT6ecJHHEymtiac= )
|
|
dname.example.org. 1800 IN A 127.0.0.1
|
|
1800 RRSIG A 5 3 1800 (
|
|
20170702091734 20170602091734 54282 example.org.
|
|
LPCK2nLyDdGwvmzGLkUO2atEUjoc+aEspkC3
|
|
keZCdXZaLnAwBH7dNAjvvXzzy0WrgWeiyDb4
|
|
+rJ2N0oaKEZicM4QQDHKhugJblKbU5G4qTey
|
|
LSEaV3vvQnzGd0S6dCqnwfPj9czagFN7Zlf5
|
|
DmLtdxx0aiDPCUpqT0+H/vuGPfk= )
|
|
1800 DNAME test.example.org.
|
|
1800 RRSIG DNAME 5 3 1800 (
|
|
20170702091734 20170602091734 54282 example.org.
|
|
HvX79T1flWJ8H9/1XZjX6gz8rP/o2jbfPXJ9
|
|
vC7ids/ZJilSReabLru4DCqcw1IV2DM/CZdE
|
|
tBnED/T2PJXvMut9tnYMrz+ZFPxoV6XyA3Z7
|
|
bok3B0OuxizzAN2EXdol04VdbMHoWUzjQCzi
|
|
0Ri12zLGRPzDepZ7FolgD+JtiBM= )
|
|
14400 NSEC a.dname.example.org. A DNAME RRSIG NSEC
|
|
14400 RRSIG NSEC 5 3 14400 (
|
|
20170702091734 20170602091734 54282 example.org.
|
|
U3ZPYMUBJl3wF2SazQv/kBf6ec0CH+7n0Hr9
|
|
w6lBKkiXz7P9WQzJDVnTHEZOrbDI6UetFGyC
|
|
6qcaADCASZ9Wxc+riyK1Hl4ox+Y/CHJ97WHy
|
|
oS2X//vEf6qmbHQXin0WQtFdU/VCRYF40X5v
|
|
8VfqOmrr8iKiEqXND8XNVf58mTw= )
|
|
a.dname.example.org. 1800 IN A 127.0.0.1
|
|
1800 RRSIG A 5 4 1800 (
|
|
20170702091734 20170602091734 54282 example.org.
|
|
y7RHBWZwli8SJQ4BgTmdXmYS3KGHZ7AitJCx
|
|
zXFksMQtNoOfVEQBwnFqjAb8ezcV5u92h1gN
|
|
i1EcuxCFiElML1XFT8dK2GnlPAga9w3oIwd5
|
|
wzW/YHcnR0P9lF56Sl7RoIt6+jJqOdRfixS6
|
|
TDoLoXsNbOxQ+qV3B8pU2Tam204= )
|
|
14400 NSEC ns.example.org. A RRSIG NSEC
|
|
14400 RRSIG NSEC 5 4 14400 (
|
|
20170702091734 20170602091734 54282 example.org.
|
|
Tmu27q3+xfONSZZtZLhejBUVtEw+83ZU1AFb
|
|
Rsxctjry/x5r2JSxw/sgSAExxX/7tx/okZ8J
|
|
oJqtChpsr91Kiw3eEBgINi2lCYIpMJlW4cWz
|
|
8bYlHfR81VsKYgy/cRgrq1RRvBoJnw+nwSty
|
|
mKPIvUtt67LAvLxJheSCEMZLCKI= )
|
|
ns.example.org. 1800 IN A 127.0.0.1
|
|
1800 RRSIG A 5 3 1800 (
|
|
20170702091734 20170602091734 54282 example.org.
|
|
mhi1SGaaAt+ndQEg5uKWKCH0HMzaqh/9dUK3
|
|
p2wWMBrLbTZrcWyz10zRnvehicXDCasbBrer
|
|
ZpDQnz5AgxYYBURvdPfUzx1XbNuRJRE4l5PN
|
|
CEUTlTWcqCXnlSoPKEJE5HRf7v0xg2BrBUfM
|
|
4mZnW2bFLwjrRQ5mm/mAmHmTROk= )
|
|
14400 NSEC example.org. A RRSIG NSEC
|
|
14400 RRSIG NSEC 5 3 14400 (
|
|
20170702091734 20170602091734 54282 example.org.
|
|
loHcdjX+NIWLAkUDfPSy2371wrfUvrBQTfMO
|
|
17eO2Y9E/6PE935NF5bjQtZBRRghyxzrFJhm
|
|
vY1Ad5ZTb+NLHvdSWbJQJog+eCc7QWp64WzR
|
|
RXpMdvaE6ZDwalWldLjC3h8QDywDoFdndoRY
|
|
eHOsmTvvtWWqtO6Fa5A8gmHT5HA= )
|
|
`
|