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dns/parse_test.go

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package dns
import (
"bytes"
"crypto/rsa"
"encoding/hex"
"fmt"
"math/rand"
"net"
"reflect"
"regexp"
"strconv"
"strings"
"testing"
"testing/quick"
)
func TestDotInName(t *testing.T) {
buf := make([]byte, 20)
PackDomainName("aa\\.bb.nl.", buf, 0, nil, false)
// index 3 must be a real dot
if buf[3] != '.' {
t.Error("dot should be a real dot")
}
if buf[6] != 2 {
t.Error("this must have the value 2")
}
dom, _, _ := UnpackDomainName(buf, 0)
// printing it should yield the backspace again
if dom != "aa\\.bb.nl." {
t.Error("dot should have been escaped: ", dom)
}
}
func TestDotLastInLabel(t *testing.T) {
sample := "aa\\..au."
buf := make([]byte, 20)
_, err := PackDomainName(sample, buf, 0, nil, false)
if err != nil {
t.Fatalf("unexpected error packing domain: %v", err)
}
dom, _, _ := UnpackDomainName(buf, 0)
if dom != sample {
t.Fatalf("unpacked domain `%s' doesn't match packed domain", dom)
}
}
func TestTooLongDomainName(t *testing.T) {
l := "aaabbbcccdddeeefffggghhhiiijjjkkklllmmmnnnooopppqqqrrrsssttt."
dom := l + l + l + l + l + l + l
_, err := NewRR(dom + " IN A 127.0.0.1")
if err == nil {
t.Error("should be too long")
}
_, err = NewRR("..com. IN A 127.0.0.1")
if err == nil {
t.Error("should fail")
}
}
func TestDomainName(t *testing.T) {
tests := []string{"r\\.gieben.miek.nl.", "www\\.www.miek.nl.",
"www.*.miek.nl.", "www.*.miek.nl.",
}
dbuff := make([]byte, 40)
for _, ts := range tests {
if _, err := PackDomainName(ts, dbuff, 0, nil, false); err != nil {
t.Error("not a valid domain name")
continue
}
n, _, err := UnpackDomainName(dbuff, 0)
if err != nil {
t.Error("failed to unpack packed domain name")
continue
}
if ts != n {
t.Errorf("must be equal: in: %s, out: %s", ts, n)
}
}
}
func TestDomainNameAndTXTEscapes(t *testing.T) {
tests := []byte{'.', '(', ')', ';', ' ', '@', '"', '\\', 9, 13, 10, 0, 255}
for _, b := range tests {
rrbytes := []byte{
1, b, 0, // owner
byte(TypeTXT >> 8), byte(TypeTXT),
byte(ClassINET >> 8), byte(ClassINET),
0, 0, 0, 1, // TTL
0, 2, 1, b, // Data
}
rr1, _, err := UnpackRR(rrbytes, 0)
if err != nil {
panic(err)
}
s := rr1.String()
rr2, err := NewRR(s)
if err != nil {
t.Errorf("error parsing unpacked RR's string: %v", err)
}
repacked := make([]byte, len(rrbytes))
if _, err := PackRR(rr2, repacked, 0, nil, false); err != nil {
t.Errorf("error packing parsed RR: %v", err)
}
if !bytes.Equal(repacked, rrbytes) {
t.Error("packed bytes don't match original bytes")
}
}
}
func TestTXTEscapeParsing(t *testing.T) {
test := [][]string{
{`";"`, `";"`},
{`\;`, `";"`},
{`"\t"`, `"t"`},
{`"\r"`, `"r"`},
{`"\ "`, `" "`},
{`"\;"`, `";"`},
{`"\;\""`, `";\""`},
{`"\(a\)"`, `"(a)"`},
{`"\(a)"`, `"(a)"`},
{`"(a\)"`, `"(a)"`},
{`"(a)"`, `"(a)"`},
{`"\048"`, `"0"`},
{`"\` + "\t" + `"`, `"\009"`},
{`"\` + "\n" + `"`, `"\010"`},
{`"\` + "\r" + `"`, `"\013"`},
{`"\` + "\x11" + `"`, `"\017"`},
{`"\'"`, `"'"`},
}
for _, s := range test {
rr, err := NewRR(fmt.Sprintf("example.com. IN TXT %v", s[0]))
if err != nil {
t.Errorf("could not parse %v TXT: %s", s[0], err)
continue
}
txt := sprintTxt(rr.(*TXT).Txt)
if txt != s[1] {
t.Errorf("mismatch after parsing `%v` TXT record: `%v` != `%v`", s[0], txt, s[1])
}
}
}
func GenerateDomain(r *rand.Rand, size int) []byte {
dnLen := size % 70 // artificially limit size so there's less to interpret if a failure occurs
var dn []byte
done := false
for i := 0; i < dnLen && !done; {
max := dnLen - i
if max > 63 {
max = 63
}
lLen := max
if lLen != 0 {
lLen = int(r.Int31()) % max
}
done = lLen == 0
if done {
continue
}
l := make([]byte, lLen+1)
l[0] = byte(lLen)
for j := 0; j < lLen; j++ {
l[j+1] = byte(rand.Int31())
}
dn = append(dn, l...)
i += 1 + lLen
}
return append(dn, 0)
}
func TestDomainQuick(t *testing.T) {
r := rand.New(rand.NewSource(0))
f := func(l int) bool {
db := GenerateDomain(r, l)
ds, _, err := UnpackDomainName(db, 0)
if err != nil {
panic(err)
}
buf := make([]byte, 255)
off, err := PackDomainName(ds, buf, 0, nil, false)
if err != nil {
t.Errorf("error packing domain: %v", err)
t.Errorf(" bytes: %v", db)
t.Errorf("string: %v", ds)
return false
}
if !bytes.Equal(db, buf[:off]) {
t.Errorf("repacked domain doesn't match original:")
t.Errorf("src bytes: %v", db)
t.Errorf(" string: %v", ds)
t.Errorf("out bytes: %v", buf[:off])
return false
}
return true
}
if err := quick.Check(f, nil); err != nil {
t.Error(err)
}
}
func GenerateTXT(r *rand.Rand, size int) []byte {
rdLen := size % 300 // artificially limit size so there's less to interpret if a failure occurs
var rd []byte
for i := 0; i < rdLen; {
max := rdLen - 1
if max > 255 {
max = 255
}
sLen := max
if max != 0 {
sLen = int(r.Int31()) % max
}
s := make([]byte, sLen+1)
s[0] = byte(sLen)
for j := 0; j < sLen; j++ {
s[j+1] = byte(rand.Int31())
}
rd = append(rd, s...)
i += 1 + sLen
}
return rd
}
// Ok, 2 things. 1) this test breaks with the new functionality of splitting up larger txt
// chunks into 255 byte pieces. 2) I don't like the random nature of this thing, because I can't
// place the quotes where they need to be.
// So either add some code the places the quotes in just the right spots, make this non random
// or do something else.
// Disabled for now. (miek)
func testTXTRRQuick(t *testing.T) {
s := rand.NewSource(0)
r := rand.New(s)
typeAndClass := []byte{
byte(TypeTXT >> 8), byte(TypeTXT),
byte(ClassINET >> 8), byte(ClassINET),
0, 0, 0, 1, // TTL
}
f := func(l int) bool {
owner := GenerateDomain(r, l)
rdata := GenerateTXT(r, l)
rrbytes := make([]byte, 0, len(owner)+2+2+4+2+len(rdata))
rrbytes = append(rrbytes, owner...)
rrbytes = append(rrbytes, typeAndClass...)
rrbytes = append(rrbytes, byte(len(rdata)>>8), byte(len(rdata)))
rrbytes = append(rrbytes, rdata...)
rr, _, err := UnpackRR(rrbytes, 0)
if err != nil {
panic(err)
}
buf := make([]byte, len(rrbytes)*3)
off, err := PackRR(rr, buf, 0, nil, false)
if err != nil {
t.Errorf("pack Error: %v\nRR: %v", err, rr)
return false
}
buf = buf[:off]
if !bytes.Equal(buf, rrbytes) {
t.Errorf("packed bytes don't match original bytes")
t.Errorf("src bytes: %v", rrbytes)
t.Errorf(" struct: %v", rr)
t.Errorf("out bytes: %v", buf)
return false
}
if len(rdata) == 0 {
// stringifying won't produce any data to parse
return true
}
rrString := rr.String()
rr2, err := NewRR(rrString)
if err != nil {
t.Errorf("error parsing own output: %v", err)
t.Errorf("struct: %v", rr)
t.Errorf("string: %v", rrString)
return false
}
if rr2.String() != rrString {
t.Errorf("parsed rr.String() doesn't match original string")
t.Errorf("original: %v", rrString)
t.Errorf(" parsed: %v", rr2.String())
return false
}
buf = make([]byte, len(rrbytes)*3)
off, err = PackRR(rr2, buf, 0, nil, false)
if err != nil {
t.Errorf("error packing parsed rr: %v", err)
t.Errorf("unpacked Struct: %v", rr)
t.Errorf(" string: %v", rrString)
t.Errorf(" parsed Struct: %v", rr2)
return false
}
buf = buf[:off]
if !bytes.Equal(buf, rrbytes) {
t.Errorf("parsed packed bytes don't match original bytes")
t.Errorf(" source bytes: %v", rrbytes)
t.Errorf("unpacked struct: %v", rr)
t.Errorf(" string: %v", rrString)
t.Errorf(" parsed struct: %v", rr2)
t.Errorf(" repacked bytes: %v", buf)
return false
}
return true
}
c := &quick.Config{MaxCountScale: 10}
if err := quick.Check(f, c); err != nil {
t.Error(err)
}
}
func TestParseDirectiveMisc(t *testing.T) {
tests := map[string]string{
"$ORIGIN miek.nl.\na IN NS b": "a.miek.nl.\t3600\tIN\tNS\tb.miek.nl.",
"$TTL 2H\nmiek.nl. IN NS b.": "miek.nl.\t7200\tIN\tNS\tb.",
"miek.nl. 1D IN NS b.": "miek.nl.\t86400\tIN\tNS\tb.",
`name. IN SOA a6.nstld.com. hostmaster.nic.name. (
203362132 ; serial
5m ; refresh (5 minutes)
5m ; retry (5 minutes)
2w ; expire (2 weeks)
300 ; minimum (5 minutes)
)`: "name.\t3600\tIN\tSOA\ta6.nstld.com. hostmaster.nic.name. 203362132 300 300 1209600 300",
". 3600000 IN NS ONE.MY-ROOTS.NET.": ".\t3600000\tIN\tNS\tONE.MY-ROOTS.NET.",
"ONE.MY-ROOTS.NET. 3600000 IN A 192.168.1.1": "ONE.MY-ROOTS.NET.\t3600000\tIN\tA\t192.168.1.1",
}
for i, o := range tests {
rr, err := NewRR(i)
if err != nil {
t.Error("failed to parse RR: ", err)
continue
}
if rr.String() != o {
t.Errorf("`%s' should be equal to\n`%s', but is `%s'", i, o, rr.String())
}
}
}
func TestNSEC(t *testing.T) {
nsectests := map[string]string{
"nl. IN NSEC3PARAM 1 0 5 30923C44C6CBBB8F": "nl.\t3600\tIN\tNSEC3PARAM\t1 0 5 30923C44C6CBBB8F",
"p2209hipbpnm681knjnu0m1febshlv4e.nl. IN NSEC3 1 1 5 30923C44C6CBBB8F P90DG1KE8QEAN0B01613LHQDG0SOJ0TA NS SOA TXT RRSIG DNSKEY NSEC3PARAM": "p2209hipbpnm681knjnu0m1febshlv4e.nl.\t3600\tIN\tNSEC3\t1 1 5 30923C44C6CBBB8F P90DG1KE8QEAN0B01613LHQDG0SOJ0TA NS SOA TXT RRSIG DNSKEY NSEC3PARAM",
"localhost.dnssex.nl. IN NSEC www.dnssex.nl. A RRSIG NSEC": "localhost.dnssex.nl.\t3600\tIN\tNSEC\twww.dnssex.nl. A RRSIG NSEC",
"localhost.dnssex.nl. IN NSEC www.dnssex.nl. A RRSIG NSEC TYPE65534": "localhost.dnssex.nl.\t3600\tIN\tNSEC\twww.dnssex.nl. A RRSIG NSEC TYPE65534",
"localhost.dnssex.nl. IN NSEC www.dnssex.nl. A RRSIG NSec Type65534": "localhost.dnssex.nl.\t3600\tIN\tNSEC\twww.dnssex.nl. A RRSIG NSEC TYPE65534",
"44ohaq2njb0idnvolt9ggthvsk1e1uv8.skydns.test. NSEC3 1 0 0 - 44OHAQ2NJB0IDNVOLT9GGTHVSK1E1UVA": "44ohaq2njb0idnvolt9ggthvsk1e1uv8.skydns.test.\t3600\tIN\tNSEC3\t1 0 0 - 44OHAQ2NJB0IDNVOLT9GGTHVSK1E1UVA",
}
for i, o := range nsectests {
rr, err := NewRR(i)
if err != nil {
t.Error("failed to parse RR: ", err)
continue
}
if rr.String() != o {
t.Errorf("`%s' should be equal to\n`%s', but is `%s'", i, o, rr.String())
}
}
rr, err := NewRR("nl. IN NSEC3PARAM 1 0 5 30923C44C6CBBB8F")
if err != nil {
t.Fatal("failed to parse RR: ", err)
}
if nsec3param, ok := rr.(*NSEC3PARAM); ok {
if nsec3param.SaltLength != 8 {
t.Fatalf("nsec3param saltlen %d != 8", nsec3param.SaltLength)
}
} else {
t.Fatal("not nsec3 param: ", err)
}
}
func TestParseLOC(t *testing.T) {
lt := map[string]string{
"SW1A2AA.find.me.uk. LOC 51 30 12.748 N 00 07 39.611 W 0.00m 0.00m 0.00m 0.00m": "SW1A2AA.find.me.uk.\t3600\tIN\tLOC\t51 30 12.748 N 00 07 39.611 W 0m 0.00m 0.00m 0.00m",
"SW1A2AA.find.me.uk. LOC 51 0 0.0 N 00 07 39.611 W 0.00m 0.00m 0.00m 0.00m": "SW1A2AA.find.me.uk.\t3600\tIN\tLOC\t51 00 0.000 N 00 07 39.611 W 0m 0.00m 0.00m 0.00m",
"SW1A2AA.find.me.uk. LOC 51 30 12.748 N 00 07 39.611 W 0.00m": "SW1A2AA.find.me.uk.\t3600\tIN\tLOC\t51 30 12.748 N 00 07 39.611 W 0m 1m 10000m 10m",
// Exercise boundary cases
"SW1A2AA.find.me.uk. LOC 90 0 0.0 N 180 0 0.0 W 42849672.95 90000000.00m 90000000.00m 90000000.00m": "SW1A2AA.find.me.uk.\t3600\tIN\tLOC\t90 00 0.000 N 180 00 0.000 W 42849672.95m 90000000m 90000000m 90000000m",
"SW1A2AA.find.me.uk. LOC 89 59 59.999 N 179 59 59.999 W -100000 90000000.00m 90000000.00m 90000000m": "SW1A2AA.find.me.uk.\t3600\tIN\tLOC\t89 59 59.999 N 179 59 59.999 W -100000m 90000000m 90000000m 90000000m",
// use float64 to have enough precision.
"example.com. LOC 42 21 43.952 N 71 5 6.344 W -24m 1m 200m 10m": "example.com.\t3600\tIN\tLOC\t42 21 43.952 N 71 05 6.344 W -24m 1m 200m 10m",
}
for i, o := range lt {
rr, err := NewRR(i)
if err != nil {
t.Error("failed to parse RR: ", err)
continue
}
if rr.String() != o {
t.Errorf("`%s' should be equal to\n`%s', but is `%s'", i, o, rr.String())
}
}
// Invalid cases (out of range values)
lt = map[string]string{ // Pair of (invalid) RDATA and the bad field name
// One of the subfields is out of range.
"91 0 0.0 N 00 07 39.611 W 0m": "Latitude",
"89 60 0.0 N 00 07 39.611 W 0m": "Latitude",
"89 00 60.0 N 00 07 39.611 W 0m": "Latitude",
"1 00 -1 N 00 07 39.611 W 0m": "Latitude",
"0 0 0.0 N 181 00 0.0 W 0m": "Longitude",
"0 0 0.0 N 179 60 0.0 W 0m": "Longitude",
"0 0 0.0 N 179 00 60.0 W 0m": "Longitude",
"0 0 0.0 N 1 00 -1 W 0m": "Longitude",
// Each subfield is valid, but resulting latitude would be out of range.
"90 01 00.0 N 00 07 39.611 W 0m": "Latitude",
"0 0 0.0 N 180 01 0.0 W 0m": "Longitude",
}
for rdata, field := range lt {
_, err := NewRR(fmt.Sprintf("example.com. LOC %s", rdata))
if err == nil || !strings.Contains(err.Error(), field) {
t.Errorf("expected error to contain %q, but got %v", field, err)
}
}
}
// this tests a subroutine for the LOC RR parser. It's complicated enough to test separately.
func TestStringToCm(t *testing.T) {
tests := []struct {
// Test description: the input token and the expected return values from stringToCm.
token string
e uint8
m uint8
ok bool
}{
{"100", 4, 1, true},
{"0100", 4, 1, true}, // leading 0 (allowed)
{"100.99", 4, 1, true},
{"90000000", 9, 9, true},
{"90000000.00", 9, 9, true},
{"0", 0, 0, true},
{"0.00", 0, 0, true},
{"0.01", 0, 1, true},
{".01", 0, 1, true}, // empty 'meter' part (allowed)
{"0.1", 1, 1, true},
// out of range (too large)
{"90000001", 0, 0, false},
{"90000000.01", 0, 0, false},
// more than 2 digits in 'cmeter' part
{"0.000", 0, 0, false},
{"0.001", 0, 0, false},
{"0.999", 0, 0, false},
// with plus or minus sign (disallowed)
{"-100", 0, 0, false},
{"+100", 0, 0, false},
{"0.-10", 0, 0, false},
{"0.+10", 0, 0, false},
{"0a.00", 0, 0, false}, // invalid string for 'meter' part
{".1x", 0, 0, false}, // invalid string for 'cmeter' part
{".", 0, 0, false}, // empty 'cmeter' part (disallowed)
{"1.", 0, 0, false}, // ditto
{"m", 0, 0, false}, // only the "m" suffix
}
for _, tc := range tests {
tc := tc
t.Run(tc.token, func(t *testing.T) {
// In all cases the expected result is the same with or without the 'm' suffix.
// So we test both cases using the same test code.
for _, sfx := range []string{"", "m"} {
token := tc.token + sfx
e, m, ok := stringToCm(token)
if ok != tc.ok {
t.Fatal("unexpected validation result")
}
if m != tc.m {
t.Fatalf("Expected %d, got %d", tc.m, m)
}
if e != tc.e {
t.Fatalf("Expected %d, got %d", tc.e, e)
}
}
})
}
}
func TestParseDS(t *testing.T) {
dt := map[string]string{
"example.net. 3600 IN DS 40692 12 3 22261A8B0E0D799183E35E24E2AD6BB58533CBA7E3B14D659E9CA09B 2071398F": "example.net.\t3600\tIN\tDS\t40692 12 3 22261A8B0E0D799183E35E24E2AD6BB58533CBA7E3B14D659E9CA09B2071398F",
}
for i, o := range dt {
rr, err := NewRR(i)
if err != nil {
t.Error("failed to parse RR: ", err)
continue
}
if rr.String() != o {
t.Errorf("`%s' should be equal to\n`%s', but is `%s'", i, o, rr.String())
}
}
}
func TestQuotes(t *testing.T) {
tests := map[string]string{
`t.example.com. IN TXT "a bc"`: "t.example.com.\t3600\tIN\tTXT\t\"a bc\"",
`t.example.com. IN TXT "a
bc"`: "t.example.com.\t3600\tIN\tTXT\t\"a\\010 bc\"",
`t.example.com. IN TXT ""`: "t.example.com.\t3600\tIN\tTXT\t\"\"",
`t.example.com. IN TXT "a"`: "t.example.com.\t3600\tIN\tTXT\t\"a\"",
`t.example.com. IN TXT "aa"`: "t.example.com.\t3600\tIN\tTXT\t\"aa\"",
`t.example.com. IN TXT "aaa" ;`: "t.example.com.\t3600\tIN\tTXT\t\"aaa\"",
`t.example.com. IN TXT "abc" "DEF"`: "t.example.com.\t3600\tIN\tTXT\t\"abc\" \"DEF\"",
`t.example.com. IN TXT "abc" ( "DEF" )`: "t.example.com.\t3600\tIN\tTXT\t\"abc\" \"DEF\"",
`t.example.com. IN TXT aaa ;`: "t.example.com.\t3600\tIN\tTXT\t\"aaa\"",
`t.example.com. IN TXT aaa aaa;`: "t.example.com.\t3600\tIN\tTXT\t\"aaa\" \"aaa\"",
`t.example.com. IN TXT aaa aaa`: "t.example.com.\t3600\tIN\tTXT\t\"aaa\" \"aaa\"",
`t.example.com. IN TXT aaa`: "t.example.com.\t3600\tIN\tTXT\t\"aaa\"",
"cid.urn.arpa. NAPTR 100 50 \"s\" \"z3950+I2L+I2C\" \"\" _z3950._tcp.gatech.edu.": "cid.urn.arpa.\t3600\tIN\tNAPTR\t100 50 \"s\" \"z3950+I2L+I2C\" \"\" _z3950._tcp.gatech.edu.",
"cid.urn.arpa. NAPTR 100 50 \"s\" \"rcds+I2C\" \"\" _rcds._udp.gatech.edu.": "cid.urn.arpa.\t3600\tIN\tNAPTR\t100 50 \"s\" \"rcds+I2C\" \"\" _rcds._udp.gatech.edu.",
"cid.urn.arpa. NAPTR 100 50 \"s\" \"http+I2L+I2C+I2R\" \"\" _http._tcp.gatech.edu.": "cid.urn.arpa.\t3600\tIN\tNAPTR\t100 50 \"s\" \"http+I2L+I2C+I2R\" \"\" _http._tcp.gatech.edu.",
"cid.urn.arpa. NAPTR 100 10 \"\" \"\" \"/urn:cid:.+@([^\\.]+\\.)(.*)$/\\2/i\" .": "cid.urn.arpa.\t3600\tIN\tNAPTR\t100 10 \"\" \"\" \"/urn:cid:.+@([^\\.]+\\.)(.*)$/\\2/i\" .",
}
for i, o := range tests {
rr, err := NewRR(i)
if err != nil {
t.Error("failed to parse RR: ", err)
continue
}
if rr.String() != o {
t.Errorf("`%s' should be equal to\n`%s', but is\n`%s'", i, o, rr.String())
}
}
}
func TestParseClass(t *testing.T) {
tests := map[string]string{
"t.example.com. IN A 127.0.0.1": "t.example.com. 3600 IN A 127.0.0.1",
"t.example.com. CS A 127.0.0.1": "t.example.com. 3600 CS A 127.0.0.1",
"t.example.com. CH A 127.0.0.1": "t.example.com. 3600 CH A 127.0.0.1",
// ClassANY can not occur in zone files
// "t.example.com. ANY A 127.0.0.1": "t.example.com. 3600 ANY A 127.0.0.1",
"t.example.com. NONE A 127.0.0.1": "t.example.com. 3600 NONE A 127.0.0.1",
"t.example.com. CLASS255 A 127.0.0.1": "t.example.com. 3600 CLASS255 A 127.0.0.1",
}
for i, o := range tests {
rr, err := NewRR(i)
if err != nil {
t.Error("failed to parse RR: ", err)
continue
}
if rr.String() != o {
t.Errorf("`%s' should be equal to\n`%s', but is\n`%s'", i, o, rr.String())
}
}
}
func TestBrace(t *testing.T) {
tests := map[string]string{
"(miek.nl.) 3600 IN A 127.0.1.1": "miek.nl.\t3600\tIN\tA\t127.0.1.1",
"miek.nl. (3600) IN MX (10) elektron.atoom.net.": "miek.nl.\t3600\tIN\tMX\t10 elektron.atoom.net.",
`miek.nl. IN (
3600 A 127.0.0.1)`: "miek.nl.\t3600\tIN\tA\t127.0.0.1",
"(miek.nl.) (A) (127.0.2.1)": "miek.nl.\t3600\tIN\tA\t127.0.2.1",
"miek.nl A 127.0.3.1": "miek.nl.\t3600\tIN\tA\t127.0.3.1",
"_ssh._tcp.local. 60 IN (PTR) stora._ssh._tcp.local.": "_ssh._tcp.local.\t60\tIN\tPTR\tstora._ssh._tcp.local.",
"miek.nl. NS ns.miek.nl": "miek.nl.\t3600\tIN\tNS\tns.miek.nl.",
`(miek.nl.) (
(IN)
(AAAA)
(::1) )`: "miek.nl.\t3600\tIN\tAAAA\t::1",
`(miek.nl.) (
(IN)
(AAAA)
(::1))`: "miek.nl.\t3600\tIN\tAAAA\t::1",
"miek.nl. IN AAAA ::2": "miek.nl.\t3600\tIN\tAAAA\t::2",
`((m)(i)ek.(n)l.) (SOA) (soa.) (soa.) (
2009032802 ; serial
21600 ; refresh (6 hours)
7(2)00 ; retry (2 hours)
604()800 ; expire (1 week)
3600 ; minimum (1 hour)
)`: "miek.nl.\t3600\tIN\tSOA\tsoa. soa. 2009032802 21600 7200 604800 3600",
"miek\\.nl. IN A 127.0.0.10": "miek\\.nl.\t3600\tIN\tA\t127.0.0.10",
"miek.nl. IN A 127.0.0.11": "miek.nl.\t3600\tIN\tA\t127.0.0.11",
"miek.nl. A 127.0.0.12": "miek.nl.\t3600\tIN\tA\t127.0.0.12",
`miek.nl. 86400 IN SOA elektron.atoom.net. miekg.atoom.net. (
2009032802 ; serial
21600 ; refresh (6 hours)
7200 ; retry (2 hours)
604800 ; expire (1 week)
3600 ; minimum (1 hour)
)`: "miek.nl.\t86400\tIN\tSOA\telektron.atoom.net. miekg.atoom.net. 2009032802 21600 7200 604800 3600",
}
for i, o := range tests {
rr, err := NewRR(i)
if err != nil {
t.Errorf("failed to parse RR: %v\n\t%s", err, i)
continue
}
if rr.String() != o {
t.Errorf("`%s' should be equal to\n`%s', but is `%s'", i, o, rr.String())
}
}
}
func TestParseFailure(t *testing.T) {
tests := []string{"miek.nl. IN A 327.0.0.1",
"miek.nl. IN AAAA ::x",
"miek.nl. IN MX a0 miek.nl.",
"miek.nl aap IN MX mx.miek.nl.",
"miek.nl 200 IN mxx 10 mx.miek.nl.",
"miek.nl. inn MX 10 mx.miek.nl.",
// "miek.nl. IN CNAME ", // actually valid nowadays, zero size rdata
"miek.nl. IN CNAME ..",
"miek.nl. PA MX 10 miek.nl.",
"miek.nl. ) IN MX 10 miek.nl.",
}
for _, s := range tests {
_, err := NewRR(s)
if err == nil {
t.Errorf("should have triggered an error: \"%s\"", s)
}
}
}
func TestOmittedTTL(t *testing.T) {
zone := `
$ORIGIN example.com.
example.com. 42 IN SOA ns1.example.com. hostmaster.example.com. 1 86400 60 86400 3600 ; TTL=42 SOA
example.com. NS 2 ; TTL=42 absolute owner name
@ MD 3 ; TTL=42 current-origin owner name
MF 4 ; TTL=42 leading-space implied owner name
43 TYPE65280 \# 1 05 ; TTL=43 implied owner name explicit TTL
MB 6 ; TTL=43 leading-tab implied owner name
$TTL 1337
example.com. 88 MG 7 ; TTL=88 explicit TTL
example.com. MR 8 ; TTL=1337 after first $TTL
$TTL 314
1 TXT 9 ; TTL=1 implied owner name explicit TTL
example.com. DNAME 10 ; TTL=314 after second $TTL
`
reCaseFromComment := regexp.MustCompile(`TTL=(\d+)\s+(.*)`)
z := NewZoneParser(strings.NewReader(zone), "", "")
var i int
for rr, ok := z.Next(); ok; rr, ok = z.Next() {
i++
expected := reCaseFromComment.FindStringSubmatch(z.Comment())
if len(expected) != 3 {
t.Errorf("regexp didn't match for record %d", i)
continue
}
expectedTTL, _ := strconv.ParseUint(expected[1], 10, 32)
ttl := rr.Header().Ttl
if ttl != uint32(expectedTTL) {
t.Errorf("%s: expected TTL %d, got %d", expected[2], expectedTTL, ttl)
}
}
if err := z.Err(); err != nil {
t.Error(err)
}
if i != 10 {
t.Errorf("expected %d records, got %d", 5, i)
}
}
func TestRelativeNameErrors(t *testing.T) {
var badZones = []struct {
label string
zoneContents string
expectedErr string
}{
{
"relative owner name without origin",
"example.com 3600 IN SOA ns.example.com. hostmaster.example.com. 1 86400 60 86400 3600",
"bad owner name",
},
{
"relative owner name in RDATA",
"example.com. 3600 IN SOA ns hostmaster 1 86400 60 86400 3600",
"bad SOA Ns",
},
{
"origin reference without origin",
"@ 3600 IN SOA ns.example.com. hostmaster.example.com. 1 86400 60 86400 3600",
"bad owner name",
},
{
"relative owner name in $INCLUDE",
"$INCLUDE file.db example.com",
"bad origin name",
},
{
"relative owner name in $ORIGIN",
"$ORIGIN example.com",
"bad origin name",
},
}
for _, errorCase := range badZones {
z := NewZoneParser(strings.NewReader(errorCase.zoneContents), "", "")
z.Next()
if err := z.Err(); err == nil {
t.Errorf("%s: expected error, got nil", errorCase.label)
} else if !strings.Contains(err.Error(), errorCase.expectedErr) {
t.Errorf("%s: expected error `%s`, got `%s`", errorCase.label, errorCase.expectedErr, err)
}
}
}
func TestHIP(t *testing.T) {
h := `www.example.com. IN HIP ( 2 200100107B1A74DF365639CC39F1D578
AwEAAbdxyhNuSutc5EMzxTs9LBPCIkOFH8cIvM4p
9+LrV4e19WzK00+CI6zBCQTdtWsuxKbWIy87UOoJTwkUs7lBu+Upr1gsNrut79ryra+bSRGQ
b1slImA8YVJyuIDsj7kwzG7jnERNqnWxZ48AWkskmdHaVDP4BcelrTI3rMXdXF5D
rvs1.example.com.
rvs2.example.com. )`
rr, err := NewRR(h)
if err != nil {
t.Fatalf("failed to parse RR: %v", err)
}
msg := new(Msg)
msg.Answer = []RR{rr, rr}
bytes, err := msg.Pack()
if err != nil {
t.Fatalf("failed to pack msg: %v", err)
}
if err := msg.Unpack(bytes); err != nil {
t.Fatalf("failed to unpack msg: %v", err)
}
if len(msg.Answer) != 2 {
t.Fatalf("2 answers expected: %v", msg)
}
for i, rr := range msg.Answer {
rr := rr.(*HIP)
if l := len(rr.RendezvousServers); l != 2 {
t.Fatalf("2 servers expected, only %d in record %d:\n%v", l, i, msg)
}
for j, s := range []string{"rvs1.example.com.", "rvs2.example.com."} {
if rr.RendezvousServers[j] != s {
t.Fatalf("expected server %d of record %d to be %s:\n%v", j, i, s, msg)
}
}
}
}
// Test with no known RR on the line
func TestLineNumberError2(t *testing.T) {
tests := map[string]string{
"example.com. 1000 SO master.example.com. admin.example.com. 1 4294967294 4294967293 4294967295 100": "dns: expecting RR type or class, not this...: \"SO\" at line: 1:21",
"example.com 1000 IN TALINK a.example.com. b..example.com.": "dns: bad TALINK NextName: \"b..example.com.\" at line: 1:57",
"example.com 1000 IN TALINK ( a.example.com. b..example.com. )": "dns: bad TALINK NextName: \"b..example.com.\" at line: 1:60",
`example.com 1000 IN TALINK ( a.example.com.
bb..example.com. )`: "dns: bad TALINK NextName: \"bb..example.com.\" at line: 2:18",
// This is a bug, it should report an error on line 1, but the new is already processed.
`example.com 1000 IN TALINK ( a.example.com. b...example.com.
)`: "dns: bad TALINK NextName: \"b...example.com.\" at line: 2:1"}
for in, errStr := range tests {
_, err := NewRR(in)
if err == nil {
t.Error("err is nil")
} else {
if err.Error() != errStr {
t.Errorf("%s: error should be %s is %v", in, errStr, err)
}
}
}
}
// Test if the calculations are correct
func TestRfc1982(t *testing.T) {
// If the current time and the timestamp are more than 68 years apart
// it means the date has wrapped. 0 is 1970
// fall in the current 68 year span
strtests := []string{"20120525134203", "19700101000000", "20380119031408"}
for _, v := range strtests {
if x, _ := StringToTime(v); v != TimeToString(x) {
t.Errorf("1982 arithmetic string failure %s (%s:%d)", v, TimeToString(x), x)
}
}
inttests := map[uint32]string{0: "19700101000000",
1 << 31: "20380119031408",
1<<32 - 1: "21060207062815",
}
for i, v := range inttests {
if TimeToString(i) != v {
t.Errorf("1982 arithmetic int failure %d:%s (%s)", i, v, TimeToString(i))
}
}
// Future tests, these dates get parsed to a date within the current 136 year span
future := map[string]string{"22680119031408": "20631123173144",
"19010101121212": "20370206184028",
"19210101121212": "20570206184028",
"19500101121212": "20860206184028",
"19700101000000": "19700101000000",
"19690101000000": "21050207062816",
"29210101121212": "21040522212236",
}
for from, to := range future {
x, _ := StringToTime(from)
y := TimeToString(x)
if y != to {
t.Errorf("1982 arithmetic future failure %s:%s (%s)", from, to, y)
}
}
}
func TestEmpty(t *testing.T) {
z := NewZoneParser(strings.NewReader(""), "", "")
for _, ok := z.Next(); ok; _, ok = z.Next() {
t.Errorf("should be empty")
}
if err := z.Err(); err != nil {
t.Error("got an error when it shouldn't")
}
}
func TestLowercaseTokens(t *testing.T) {
var testrecords = []string{
"example.org. 300 IN a 1.2.3.4",
"example.org. 300 in A 1.2.3.4",
"example.org. 300 in a 1.2.3.4",
"example.org. 300 a 1.2.3.4",
"example.org. 300 A 1.2.3.4",
"example.org. IN a 1.2.3.4",
"example.org. in A 1.2.3.4",
"example.org. in a 1.2.3.4",
"example.org. a 1.2.3.4",
"example.org. A 1.2.3.4",
"example.org. a 1.2.3.4",
"$ORIGIN example.org.\n a 1.2.3.4",
"$Origin example.org.\n a 1.2.3.4",
"$origin example.org.\n a 1.2.3.4",
"example.org. Class1 Type1 1.2.3.4",
}
for _, testrr := range testrecords {
_, err := NewRR(testrr)
if err != nil {
t.Errorf("failed to parse %#v, got %v", testrr, err)
}
}
}
func TestSRVPacking(t *testing.T) {
msg := Msg{}
things := []string{"1.2.3.4:8484",
"45.45.45.45:8484",
"84.84.84.84:8484",
}
for i, n := range things {
h, p, err := net.SplitHostPort(n)
if err != nil {
continue
}
port, _ := strconv.ParseUint(p, 10, 16)
rr := &SRV{
Hdr: RR_Header{Name: "somename.",
Rrtype: TypeSRV,
Class: ClassINET,
Ttl: 5},
Priority: uint16(i),
Weight: 5,
Port: uint16(port),
Target: h + ".",
}
msg.Answer = append(msg.Answer, rr)
}
_, err := msg.Pack()
if err != nil {
t.Fatalf("couldn't pack %v: %v", msg, err)
}
}
func TestParseBackslash(t *testing.T) {
if _, err := NewRR("nul\\000gap.test.globnix.net. 600 IN A 192.0.2.10"); err != nil {
t.Errorf("could not create RR with \\000 in it")
}
if _, err := NewRR(`nul\000gap.test.globnix.net. 600 IN TXT "Hello\123"`); err != nil {
t.Errorf("could not create RR with \\000 in it")
}
if _, err := NewRR(`m\ @\ iek.nl. IN 3600 A 127.0.0.1`); err != nil {
t.Errorf("could not create RR with \\ and \\@ in it")
}
}
func TestILNP(t *testing.T) {
tests := []string{
"host1.example.com.\t3600\tIN\tNID\t10 0014:4fff:ff20:ee64",
"host1.example.com.\t3600\tIN\tNID\t20 0015:5fff:ff21:ee65",
"host2.example.com.\t3600\tIN\tNID\t10 0016:6fff:ff22:ee66",
"host1.example.com.\t3600\tIN\tL32\t10 10.1.2.0",
"host1.example.com.\t3600\tIN\tL32\t20 10.1.4.0",
"host2.example.com.\t3600\tIN\tL32\t10 10.1.8.0",
"host1.example.com.\t3600\tIN\tL64\t10 2001:0DB8:1140:1000",
"host1.example.com.\t3600\tIN\tL64\t20 2001:0DB8:2140:2000",
"host2.example.com.\t3600\tIN\tL64\t10 2001:0DB8:4140:4000",
"host1.example.com.\t3600\tIN\tLP\t10 l64-subnet1.example.com.",
"host1.example.com.\t3600\tIN\tLP\t10 l64-subnet2.example.com.",
"host1.example.com.\t3600\tIN\tLP\t20 l32-subnet1.example.com.",
}
for _, t1 := range tests {
r, err := NewRR(t1)
if err != nil {
t.Fatalf("an error occurred: %v", err)
} else {
if t1 != r.String() {
t.Fatalf("strings should be equal %s %s", t1, r.String())
}
}
}
}
func TestGposEidNimloc(t *testing.T) {
dt := map[string]string{
"444433332222111199990123000000ff. NSAP-PTR foo.bar.com.": "444433332222111199990123000000ff.\t3600\tIN\tNSAP-PTR\tfoo.bar.com.",
"lillee. IN GPOS -32.6882 116.8652 10.0": "lillee.\t3600\tIN\tGPOS\t-32.6882 116.8652 10.0",
"hinault. IN GPOS -22.6882 116.8652 250.0": "hinault.\t3600\tIN\tGPOS\t-22.6882 116.8652 250.0",
"VENERA. IN NIMLOC 75234159EAC457800920": "VENERA.\t3600\tIN\tNIMLOC\t75234159EAC457800920",
"VAXA. IN EID 3141592653589793": "VAXA.\t3600\tIN\tEID\t3141592653589793",
}
for i, o := range dt {
rr, err := NewRR(i)
if err != nil {
t.Error("failed to parse RR: ", err)
continue
}
if rr.String() != o {
t.Errorf("`%s' should be equal to\n`%s', but is `%s'", i, o, rr.String())
}
}
}
func TestPX(t *testing.T) {
dt := map[string]string{
"*.net2.it. IN PX 10 net2.it. PRMD-net2.ADMD-p400.C-it.": "*.net2.it.\t3600\tIN\tPX\t10 net2.it. PRMD-net2.ADMD-p400.C-it.",
"ab.net2.it. IN PX 10 ab.net2.it. O-ab.PRMD-net2.ADMDb.C-it.": "ab.net2.it.\t3600\tIN\tPX\t10 ab.net2.it. O-ab.PRMD-net2.ADMDb.C-it.",
}
for i, o := range dt {
rr, err := NewRR(i)
if err != nil {
t.Error("failed to parse RR: ", err)
continue
}
if rr.String() != o {
t.Errorf("`%s' should be equal to\n`%s', but is `%s'", i, o, rr.String())
}
}
}
func TestComment(t *testing.T) {
// Comments we must see
comments := map[string]bool{
"; this is comment 1": true,
"; this is comment 2": true,
"; this is comment 4": true,
"; this is comment 6": true,
"; this is comment 7": true,
"; this is comment 8": true,
}
zone := `
foo. IN A 10.0.0.1 ; this is comment 1
foo. IN A (
10.0.0.2 ; this is comment 2
)
; this is comment 3
foo. IN A 10.0.0.3
foo. IN A ( 10.0.0.4 ); this is comment 4
foo. IN A 10.0.0.5
; this is comment 5
foo. IN A 10.0.0.6
foo. IN DNSKEY 256 3 5 AwEAAb+8l ; this is comment 6
foo. IN NSEC miek.nl. TXT RRSIG NSEC; this is comment 7
foo. IN TXT "THIS IS TEXT MAN"; this is comment 8
`
z := NewZoneParser(strings.NewReader(zone), ".", "")
for _, ok := z.Next(); ok; _, ok = z.Next() {
if z.Comment() != "" {
if _, okC := comments[z.Comment()]; !okC {
t.Errorf("wrong comment %q", z.Comment())
}
}
}
if err := z.Err(); err != nil {
t.Error("got an error when it shouldn't")
}
}
func TestZoneParserComments(t *testing.T) {
for i, test := range []struct {
zone string
comments []string
}{
{
`name. IN SOA a6.nstld.com. hostmaster.nic.name. (
203362132 ; serial
5m ; refresh (5 minutes)
5m ; retry (5 minutes)
2w ; expire (2 weeks)
300 ; minimum (5 minutes)
) ; y
. 3600000 IN NS ONE.MY-ROOTS.NET. ; x`,
[]string{"; serial ; refresh (5 minutes) ; retry (5 minutes) ; expire (2 weeks) ; minimum (5 minutes) ; y", "; x"},
},
{
`name. IN SOA a6.nstld.com. hostmaster.nic.name. (
203362132 ; serial
5m ; refresh (5 minutes)
5m ; retry (5 minutes)
2w ; expire (2 weeks)
300 ; minimum (5 minutes)
) ; y
. 3600000 IN NS ONE.MY-ROOTS.NET.`,
[]string{"; serial ; refresh (5 minutes) ; retry (5 minutes) ; expire (2 weeks) ; minimum (5 minutes) ; y", ""},
},
{
`name. IN SOA a6.nstld.com. hostmaster.nic.name. (
203362132 ; serial
5m ; refresh (5 minutes)
5m ; retry (5 minutes)
2w ; expire (2 weeks)
300 ; minimum (5 minutes)
)
. 3600000 IN NS ONE.MY-ROOTS.NET.`,
[]string{"; serial ; refresh (5 minutes) ; retry (5 minutes) ; expire (2 weeks) ; minimum (5 minutes)", ""},
},
{
`name. IN SOA a6.nstld.com. hostmaster.nic.name. (
203362132 ; serial
5m ; refresh (5 minutes)
5m ; retry (5 minutes)
2w ; expire (2 weeks)
300 ; minimum (5 minutes)
)
. 3600000 IN NS ONE.MY-ROOTS.NET. ; x`,
[]string{"; serial ; refresh (5 minutes) ; retry (5 minutes) ; expire (2 weeks) ; minimum (5 minutes)", "; x"},
},
{
`name. IN SOA a6.nstld.com. hostmaster.nic.name. (
203362132 ; serial
5m ; refresh (5 minutes)
5m ; retry (5 minutes)
2w ; expire (2 weeks)
300 ; minimum (5 minutes)
)`,
[]string{"; serial ; refresh (5 minutes) ; retry (5 minutes) ; expire (2 weeks) ; minimum (5 minutes)"},
},
{
`. 3600000 IN NS ONE.MY-ROOTS.NET. ; x`,
[]string{"; x"},
},
{
`. 3600000 IN NS ONE.MY-ROOTS.NET.`,
[]string{""},
},
{
`. 3600000 IN NS ONE.MY-ROOTS.NET. ;;x`,
[]string{";;x"},
},
} {
r := strings.NewReader(test.zone)
var j int
z := NewZoneParser(r, "", "")
for rr, ok := z.Next(); ok; rr, ok = z.Next() {
if j >= len(test.comments) {
t.Fatalf("too many records for zone %d at %d record, expected %d", i, j+1, len(test.comments))
}
if z.Comment() != test.comments[j] {
t.Errorf("invalid comment for record %d:%d %v", i, j, rr)
t.Logf("expected %q", test.comments[j])
t.Logf("got %q", z.Comment())
}
j++
}
if err := z.Err(); err != nil {
t.Fatal(err)
}
if j != len(test.comments) {
t.Errorf("too few records for zone %d, got %d, expected %d", i, j, len(test.comments))
}
}
}
func TestEUIxx(t *testing.T) {
tests := map[string]string{
"host.example. IN EUI48 00-00-5e-90-01-2a": "host.example.\t3600\tIN\tEUI48\t00-00-5e-90-01-2a",
"host.example. IN EUI64 00-00-5e-ef-00-00-00-2a": "host.example.\t3600\tIN\tEUI64\t00-00-5e-ef-00-00-00-2a",
}
for i, o := range tests {
r, err := NewRR(i)
if err != nil {
t.Errorf("failed to parse %s: %v", i, err)
}
if r.String() != o {
t.Errorf("want %s, got %s", o, r.String())
}
}
}
func TestUserRR(t *testing.T) {
tests := map[string]string{
"host.example. IN UID 1234": "host.example.\t3600\tIN\tUID\t1234",
"host.example. IN GID 1234556": "host.example.\t3600\tIN\tGID\t1234556",
"host.example. IN UINFO \"Miek Gieben\"": "host.example.\t3600\tIN\tUINFO\t\"Miek Gieben\"",
}
for i, o := range tests {
r, err := NewRR(i)
if err != nil {
t.Errorf("failed to parse %s: %v", i, err)
}
if r.String() != o {
t.Errorf("want %s, got %s", o, r.String())
}
}
}
func TestTXT(t *testing.T) {
// Test single entry TXT record
rr, err := NewRR(`_raop._tcp.local. 60 IN TXT "single value"`)
if err != nil {
t.Error("failed to parse single value TXT record", err)
} else if rr, ok := rr.(*TXT); !ok {
t.Error("wrong type, record should be of type TXT")
} else {
if len(rr.Txt) != 1 {
t.Error("bad size of TXT value:", len(rr.Txt))
} else if rr.Txt[0] != "single value" {
t.Error("bad single value")
}
if rr.String() != `_raop._tcp.local. 60 IN TXT "single value"` {
t.Error("bad representation of TXT record:", rr.String())
}
if Len(rr) != 28+1+12 {
t.Error("bad size of serialized record:", Len(rr))
}
}
// Test multi entries TXT record
rr, err = NewRR(`_raop._tcp.local. 60 IN TXT "a=1" "b=2" "c=3" "d=4"`)
if err != nil {
t.Error("failed to parse multi-values TXT record", err)
} else if rr, ok := rr.(*TXT); !ok {
t.Error("wrong type, record should be of type TXT")
} else {
if len(rr.Txt) != 4 {
t.Error("bad size of TXT multi-value:", len(rr.Txt))
} else if rr.Txt[0] != "a=1" || rr.Txt[1] != "b=2" || rr.Txt[2] != "c=3" || rr.Txt[3] != "d=4" {
t.Error("bad values in TXT records")
}
if rr.String() != `_raop._tcp.local. 60 IN TXT "a=1" "b=2" "c=3" "d=4"` {
t.Error("bad representation of TXT multi value record:", rr.String())
}
if Len(rr) != 28+1+3+1+3+1+3+1+3 {
t.Error("bad size of serialized multi value record:", Len(rr))
}
}
// Test empty-string in TXT record
rr, err = NewRR(`_raop._tcp.local. 60 IN TXT ""`)
if err != nil {
t.Error("failed to parse empty-string TXT record", err)
} else if rr, ok := rr.(*TXT); !ok {
t.Error("wrong type, record should be of type TXT")
} else {
if len(rr.Txt) != 1 {
t.Error("bad size of TXT empty-string value:", len(rr.Txt))
} else if rr.Txt[0] != "" {
t.Error("bad value for empty-string TXT record")
}
if rr.String() != `_raop._tcp.local. 60 IN TXT ""` {
t.Error("bad representation of empty-string TXT record:", rr.String())
}
if Len(rr) != 28+1 {
t.Error("bad size of serialized record:", Len(rr))
}
}
// Test TXT record with chunk larger than 255 bytes, they should be split up, by the parser
s := ""
for i := 0; i < 255; i++ {
s += "a"
}
s += "b"
rr, err = NewRR(`test.local. 60 IN TXT "` + s + `"`)
if err != nil {
t.Error("failed to parse empty-string TXT record", err)
}
if rr.(*TXT).Txt[1] != "b" {
t.Errorf("Txt should have two chunk, last one my be 'b', but is %s", rr.(*TXT).Txt[1])
}
}
func TestTypeXXXX(t *testing.T) {
_, err := NewRR("example.com IN TYPE1234 \\# 4 aabbccdd")
if err != nil {
t.Errorf("failed to parse TYPE1234 RR: %v", err)
}
_, err = NewRR("example.com IN TYPE655341 \\# 8 aabbccddaabbccdd")
if err == nil {
t.Errorf("this should not work, for TYPE655341")
}
_, err = NewRR("example.com IN TYPE1 \\# 4 0a000001")
if err != nil {
t.Errorf("failed to parse TYPE1 RR: %v", err)
}
}
func TestPTR(t *testing.T) {
_, err := NewRR("144.2.0.192.in-addr.arpa. 900 IN PTR ilouse03146p0\\(.example.com.")
if err != nil {
t.Error("failed to parse ", err)
}
}
func TestDigit(t *testing.T) {
tests := map[string]byte{
"miek\\000.nl. 100 IN TXT \"A\"": 0,
"miek\\001.nl. 100 IN TXT \"A\"": 1,
"miek\\254.nl. 100 IN TXT \"A\"": 254,
"miek\\255.nl. 100 IN TXT \"A\"": 255,
"miek\\256.nl. 100 IN TXT \"A\"": 0,
"miek\\257.nl. 100 IN TXT \"A\"": 1,
"miek\\004.nl. 100 IN TXT \"A\"": 4,
}
for s, i := range tests {
r, err := NewRR(s)
buf := make([]byte, 40)
if err != nil {
t.Fatalf("failed to parse %v", err)
}
PackRR(r, buf, 0, nil, false)
if buf[5] != i {
t.Fatalf("5 pos must be %d, is %d", i, buf[5])
}
r1, _, _ := UnpackRR(buf, 0)
if r1.Header().Ttl != 100 {
t.Fatalf("TTL should %d, is %d", 100, r1.Header().Ttl)
}
}
}
func TestParseRRSIGTimestamp(t *testing.T) {
tests := map[string]bool{
`miek.nl. IN RRSIG SOA 8 2 43200 20140210031301 20140111031301 12051 miek.nl. MVZUyrYwq0iZhMFDDnVXD2BvuNiUJjSYlJAgzyAE6CF875BMvvZa+Sb0 RlSCL7WODQSQHhCx/fegHhVVF+Iz8N8kOLrmXD1+jO3Bm6Prl5UhcsPx WTBsg/kmxbp8sR1kvH4oZJtVfakG3iDerrxNaf0sQwhZzyfJQAqpC7pcBoc=`: true,
`miek.nl. IN RRSIG SOA 8 2 43200 315565800 4102477800 12051 miek.nl. MVZUyrYwq0iZhMFDDnVXD2BvuNiUJjSYlJAgzyAE6CF875BMvvZa+Sb0 RlSCL7WODQSQHhCx/fegHhVVF+Iz8N8kOLrmXD1+jO3Bm6Prl5UhcsPx WTBsg/kmxbp8sR1kvH4oZJtVfakG3iDerrxNaf0sQwhZzyfJQAqpC7pcBoc=`: true,
}
for r := range tests {
_, err := NewRR(r)
if err != nil {
t.Error(err)
}
}
}
func TestTxtEqual(t *testing.T) {
rr1 := new(TXT)
rr1.Hdr = RR_Header{Name: ".", Rrtype: TypeTXT, Class: ClassINET, Ttl: 0}
rr1.Txt = []string{"a\"a", "\"", "b"}
rr2, _ := NewRR(rr1.String())
if rr1.String() != rr2.String() {
// This is not an error, but keep this test.
t.Errorf("these two TXT records should match:\n%s\n%s", rr1.String(), rr2.String())
}
}
func TestTxtLong(t *testing.T) {
rr1 := new(TXT)
rr1.Hdr = RR_Header{Name: ".", Rrtype: TypeTXT, Class: ClassINET, Ttl: 0}
// Make a long txt record, this breaks when sending the packet,
// but not earlier.
rr1.Txt = []string{"start-"}
for i := 0; i < 200; i++ {
rr1.Txt[0] += "start-"
}
str := rr1.String()
if len(str) < len(rr1.Txt[0]) {
t.Error("string conversion should work")
}
}
// Basically, don't crash.
func TestMalformedPackets(t *testing.T) {
var packets = []string{
"0021641c0000000100000000000078787878787878787878787303636f6d0000100001",
}
// com = 63 6f 6d
for _, packet := range packets {
data, _ := hex.DecodeString(packet)
var msg Msg
msg.Unpack(data)
}
}
type algorithm struct {
name uint8
bits int
}
func TestNewPrivateKey(t *testing.T) {
if testing.Short() {
t.Skip("skipping test in short mode.")
}
algorithms := []algorithm{
{ECDSAP256SHA256, 256},
{ECDSAP384SHA384, 384},
{RSASHA1, 512},
{RSASHA256, 512},
{ED25519, 256},
}
for _, algo := range algorithms {
key := new(DNSKEY)
key.Hdr.Rrtype = TypeDNSKEY
key.Hdr.Name = "miek.nl."
key.Hdr.Class = ClassINET
key.Hdr.Ttl = 14400
key.Flags = 256
key.Protocol = 3
key.Algorithm = algo.name
privkey, err := key.Generate(algo.bits)
if err != nil {
t.Fatal(err)
}
newPrivKey, err := key.NewPrivateKey(key.PrivateKeyString(privkey))
if err != nil {
t.Error(key.String())
t.Error(key.PrivateKeyString(privkey))
t.Fatal(err)
}
switch newPrivKey := newPrivKey.(type) {
case *rsa.PrivateKey:
newPrivKey.Precompute()
}
if !reflect.DeepEqual(privkey, newPrivKey) {
t.Errorf("[%v] Private keys differ:\n%#v\n%#v", AlgorithmToString[algo.name], privkey, newPrivKey)
}
}
}
// special input test
func TestNewRRSpecial(t *testing.T) {
var (
rr RR
err error
expect string
)
rr, err = NewRR("; comment")
expect = ""
if err != nil {
t.Errorf("unexpected err: %v", err)
}
if rr != nil {
t.Errorf("unexpected result: [%s] != [%s]", rr, expect)
}
rr, err = NewRR("")
expect = ""
if err != nil {
t.Errorf("unexpected err: %v", err)
}
if rr != nil {
t.Errorf("unexpected result: [%s] != [%s]", rr, expect)
}
rr, err = NewRR("$ORIGIN foo.")
expect = ""
if err != nil {
t.Errorf("unexpected err: %v", err)
}
if rr != nil {
t.Errorf("unexpected result: [%s] != [%s]", rr, expect)
}
rr, err = NewRR(" ")
expect = ""
if err != nil {
t.Errorf("unexpected err: %v", err)
}
if rr != nil {
t.Errorf("unexpected result: [%s] != [%s]", rr, expect)
}
rr, err = NewRR("\n")
expect = ""
if err != nil {
t.Errorf("unexpected err: %v", err)
}
if rr != nil {
t.Errorf("unexpected result: [%s] != [%s]", rr, expect)
}
rr, err = NewRR("foo. A 1.1.1.1\nbar. A 2.2.2.2")
expect = "foo.\t3600\tIN\tA\t1.1.1.1"
if err != nil {
t.Errorf("unexpected err: %v", err)
}
if rr == nil || rr.String() != expect {
t.Errorf("unexpected result: [%s] != [%s]", rr, expect)
}
}
func TestPrintfVerbsRdata(t *testing.T) {
x, _ := NewRR("www.miek.nl. IN MX 20 mx.miek.nl.")
if Field(x, 1) != "20" {
t.Errorf("should be 20")
}
if Field(x, 2) != "mx.miek.nl." {
t.Errorf("should be mx.miek.nl.")
}
x, _ = NewRR("www.miek.nl. IN A 127.0.0.1")
if Field(x, 1) != "127.0.0.1" {
t.Errorf("should be 127.0.0.1")
}
x, _ = NewRR("www.miek.nl. IN AAAA ::1")
if Field(x, 1) != "::1" {
t.Errorf("should be ::1")
}
x, _ = NewRR("www.miek.nl. IN NSEC a.miek.nl. A NS SOA MX AAAA")
if Field(x, 1) != "a.miek.nl." {
t.Errorf("should be a.miek.nl.")
}
if Field(x, 2) != "A NS SOA MX AAAA" {
t.Errorf("should be A NS SOA MX AAAA")
}
x, _ = NewRR("www.miek.nl. IN TXT \"first\" \"second\"")
if Field(x, 1) != "first second" {
t.Errorf("should be first second")
}
if Field(x, 0) != "" {
t.Errorf("should be empty")
}
}
func TestParseTokenOverflow(t *testing.T) {
_, err := NewRR("_443._tcp.example.org. IN TLSA 0 0 0 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")
if err == nil {
t.Fatalf("token overflow should return an error")
}
}
func TestParseTLSA(t *testing.T) {
lt := []string{
"_443._tcp.example.org.\t3600\tIN\tTLSA\t1 1 1 c22be239f483c08957bc106219cc2d3ac1a308dfbbdd0a365f17b9351234cf00",
"_443._tcp.example.org.\t3600\tIN\tTLSA\t2 1 2 4e85f45179e9cd6e0e68e2eb5be2e85ec9b92d91c609caf3ef0315213e3f92ece92c38397a607214de95c7fadc0ad0f1c604a469a0387959745032c0d51492f3",
"_443._tcp.example.org.\t3600\tIN\tTLSA\t3 0 2 69ec8d2277360b215d0cd956b0e2747108dff34b27d461a41c800629e38ee6c2d1230cc9e8e36711330adc6766e6ff7c5fbb37f106f248337c1a20ad682888d2",
}
for _, o := range lt {
rr, err := NewRR(o)
if err != nil {
t.Error("failed to parse RR: ", err)
continue
}
if rr.String() != o {
t.Errorf("`%s' should be equal to\n`%s', but is `%s'", o, o, rr.String())
}
}
}
func TestParseSMIMEA(t *testing.T) {
lt := map[string]string{
"2e85e1db3e62be6ea._smimecert.example.com.\t3600\tIN\tSMIMEA\t1 1 2 bd80f334566928fc18f58df7e4928c1886f48f71ca3fd41cd9b1854aca7c2180aaacad2819612ed68e7bd3701cc39be7f2529b017c0bc6a53e8fb3f0c7d48070": "2e85e1db3e62be6ea._smimecert.example.com.\t3600\tIN\tSMIMEA\t1 1 2 bd80f334566928fc18f58df7e4928c1886f48f71ca3fd41cd9b1854aca7c2180aaacad2819612ed68e7bd3701cc39be7f2529b017c0bc6a53e8fb3f0c7d48070",
"2e85e1db3e62be6ea._smimecert.example.com.\t3600\tIN\tSMIMEA\t0 0 1 cdcf0fc66b182928c5217ddd42c826983f5a4b94160ee6c1c9be62d38199f710": "2e85e1db3e62be6ea._smimecert.example.com.\t3600\tIN\tSMIMEA\t0 0 1 cdcf0fc66b182928c5217ddd42c826983f5a4b94160ee6c1c9be62d38199f710",
"2e85e1db3e62be6ea._smimecert.example.com.\t3600\tIN\tSMIMEA\t3 0 2 499a1eda2af8828b552cdb9d80c3744a25872fddd73f3898d8e4afa3549595d2dd4340126e759566fe8c26b251fa0c887ba4869f011a65f7e79967c2eb729f5b": "2e85e1db3e62be6ea._smimecert.example.com.\t3600\tIN\tSMIMEA\t3 0 2 499a1eda2af8828b552cdb9d80c3744a25872fddd73f3898d8e4afa3549595d2dd4340126e759566fe8c26b251fa0c887ba4869f011a65f7e79967c2eb729f5b",
"2e85e1db3e62be6eb._smimecert.example.com.\t3600\tIN\tSMIMEA\t3 0 2 499a1eda2af8828b552cdb9d80c3744a25872fddd73f3898d8e4afa3549595d2dd4340126e759566fe8 c26b251fa0c887ba4869f01 1a65f7e79967c2eb729f5b": "2e85e1db3e62be6eb._smimecert.example.com.\t3600\tIN\tSMIMEA\t3 0 2 499a1eda2af8828b552cdb9d80c3744a25872fddd73f3898d8e4afa3549595d2dd4340126e759566fe8c26b251fa0c887ba4869f011a65f7e79967c2eb729f5b",
}
for i, o := range lt {
rr, err := NewRR(i)
if err != nil {
t.Error("failed to parse RR: ", err)
continue
}
if rr.String() != o {
t.Errorf("`%s' should be equal to\n`%s', but is `%s'", o, o, rr.String())
}
}
}
func TestParseSSHFP(t *testing.T) {
lt := []string{
"test.example.org.\t300\tSSHFP\t1 2 (\n" +
"\t\t\t\t\tBC6533CDC95A79078A39A56EA7635984ED655318ADA9\n" +
"\t\t\t\t\tB6159E30723665DA95BB )",
"test.example.org.\t300\tSSHFP\t1 2 ( BC6533CDC 95A79078A39A56EA7635984ED655318AD A9B6159E3072366 5DA95BB )",
}
result := "test.example.org.\t300\tIN\tSSHFP\t1 2 BC6533CDC95A79078A39A56EA7635984ED655318ADA9B6159E30723665DA95BB"
for _, o := range lt {
rr, err := NewRR(o)
if err != nil {
t.Error("failed to parse RR: ", err)
continue
}
if rr.String() != result {
t.Errorf("`%s' should be equal to\n\n`%s', but is \n`%s'", o, result, rr.String())
}
}
}
func TestParseHINFO(t *testing.T) {
dt := map[string]string{
"example.net. HINFO A B": "example.net. 3600 IN HINFO \"A\" \"B\"",
"example.net. HINFO \"A\" \"B\"": "example.net. 3600 IN HINFO \"A\" \"B\"",
"example.net. HINFO A B C D E F": "example.net. 3600 IN HINFO \"A\" \"B C D E F\"",
"example.net. HINFO AB": "example.net. 3600 IN HINFO \"AB\" \"\"",
// "example.net. HINFO PC-Intel-700mhz \"Redhat Linux 7.1\"": "example.net. 3600 IN HINFO \"PC-Intel-700mhz\" \"Redhat Linux 7.1\"",
// This one is recommended in Pro Bind book http://www.zytrax.com/books/dns/ch8/hinfo.html
// but effectively, even Bind would replace it to correctly formed text when you AXFR
// TODO: remove this set of comments or figure support for quoted/unquoted combinations in endingToTxtSlice function
}
for i, o := range dt {
rr, err := NewRR(i)
if err != nil {
t.Error("failed to parse RR: ", err)
continue
}
if rr.String() != o {
t.Errorf("`%s' should be equal to\n`%s', but is `%s'", i, o, rr.String())
}
}
}
func TestParseCAA(t *testing.T) {
lt := map[string]string{
"example.net. CAA 0 issue \"symantec.com\"": "example.net.\t3600\tIN\tCAA\t0 issue \"symantec.com\"",
"example.net. CAA 0 issuewild \"symantec.com; stuff\"": "example.net.\t3600\tIN\tCAA\t0 issuewild \"symantec.com; stuff\"",
"example.net. CAA 128 tbs \"critical\"": "example.net.\t3600\tIN\tCAA\t128 tbs \"critical\"",
"example.net. CAA 2 auth \"0>09\\006\\010+\\006\\001\\004\\001\\214y\\002\\003\\001\\006\\009`\\134H\\001e\\003\\004\\002\\001\\004 y\\209\\012\\221r\\220\\156Q\\218\\150\\150{\\166\\245:\\231\\182%\\157:\\133\\179}\\1923r\\238\\151\\255\\128q\\145\\002\\001\\000\"": "example.net.\t3600\tIN\tCAA\t2 auth \"0>09\\006\\010+\\006\\001\\004\\001\\214y\\002\\003\\001\\006\\009`\\134H\\001e\\003\\004\\002\\001\\004 y\\209\\012\\221r\\220\\156Q\\218\\150\\150{\\166\\245:\\231\\182%\\157:\\133\\179}\\1923r\\238\\151\\255\\128q\\145\\002\\001\\000\"",
"example.net. TYPE257 0 issue \"symantec.com\"": "example.net.\t3600\tIN\tCAA\t0 issue \"symantec.com\"",
}
for i, o := range lt {
rr, err := NewRR(i)
if err != nil {
t.Error("failed to parse RR: ", err)
continue
}
if rr.String() != o {
t.Errorf("`%s' should be equal to\n`%s', but is `%s'", i, o, rr.String())
}
}
}
func TestPackCAA(t *testing.T) {
m := new(Msg)
record := new(CAA)
record.Hdr = RR_Header{Name: "example.com.", Rrtype: TypeCAA, Class: ClassINET, Ttl: 0}
record.Tag = "issue"
record.Value = "symantec.com"
record.Flag = 1
m.Answer = append(m.Answer, record)
bytes, err := m.Pack()
if err != nil {
t.Fatalf("failed to pack msg: %v", err)
}
if err := m.Unpack(bytes); err != nil {
t.Fatalf("failed to unpack msg: %v", err)
}
if len(m.Answer) != 1 {
t.Fatalf("incorrect number of answers unpacked")
}
rr := m.Answer[0].(*CAA)
if rr.Tag != "issue" {
t.Fatalf("invalid tag for unpacked answer")
} else if rr.Value != "symantec.com" {
t.Fatalf("invalid value for unpacked answer")
} else if rr.Flag != 1 {
t.Fatalf("invalid flag for unpacked answer")
}
}
func TestParseURI(t *testing.T) {
lt := map[string]string{
"_http._tcp. IN URI 10 1 \"http://www.example.com/path\"": "_http._tcp.\t3600\tIN\tURI\t10 1 \"http://www.example.com/path\"",
"_http._tcp. IN URI 10 1 \"\"": "_http._tcp.\t3600\tIN\tURI\t10 1 \"\"",
}
for i, o := range lt {
rr, err := NewRR(i)
if err != nil {
t.Error("failed to parse RR: ", err)
continue
}
if rr.String() != o {
t.Errorf("`%s' should be equal to\n`%s', but is `%s'", i, o, rr.String())
}
}
}
func TestParseAVC(t *testing.T) {
avcs := map[string]string{
`example.org. IN AVC "app-name:WOLFGANG|app-class:OAM|business=yes"`: `example.org. 3600 IN AVC "app-name:WOLFGANG|app-class:OAM|business=yes"`,
}
for avc, o := range avcs {
rr, err := NewRR(avc)
if err != nil {
t.Error("failed to parse RR: ", err)
continue
}
if rr.String() != o {
t.Errorf("`%s' should be equal to\n`%s', but is `%s'", avc, o, rr.String())
}
}
}
func TestParseCSYNC(t *testing.T) {
syncs := map[string]string{
`example.com. 3600 IN CSYNC 66 3 A NS AAAA`: `example.com. 3600 IN CSYNC 66 3 A NS AAAA`,
}
for s, o := range syncs {
rr, err := NewRR(s)
if err != nil {
t.Error("failed to parse RR: ", err)
continue
}
if rr.String() != o {
t.Errorf("`%s' should be equal to\n`%s', but is `%s'", s, o, rr.String())
}
}
}
func TestParseSVCB(t *testing.T) {
svcbs := map[string]string{
`example.com. 3600 IN SVCB 0 cloudflare.com.`: `example.com. 3600 IN SVCB 0 cloudflare.com.`,
`example.com. 3600 IN SVCB 65000 cloudflare.com. alpn=h2 ipv4hint=3.4.3.2`: `example.com. 3600 IN SVCB 65000 cloudflare.com. alpn="h2" ipv4hint="3.4.3.2"`,
`example.com. 3600 IN SVCB 65000 cloudflare.com. key65000=4\ 3 key65001="\" " key65002 key65003= key65004="" key65005== key65006==\"\" key65007=\254 key65008=\032`: `example.com. 3600 IN SVCB 65000 cloudflare.com. key65000="4\ 3" key65001="\"\ " key65002="" key65003="" key65004="" key65005="=" key65006="=\"\"" key65007="\254" key65008="\ "`,
// Explained in svcb.go "In AliasMode, records SHOULD NOT include any SvcParams,"
`example.com. 3600 IN SVCB 0 no-default-alpn`: `example.com. 3600 IN SVCB 0 no-default-alpn.`,
// From the specification
`example.com. HTTPS 0 foo.example.com.`: `example.com. 3600 IN HTTPS 0 foo.example.com.`,
`example.com. SVCB 1 .`: `example.com. 3600 IN SVCB 1 .`,
`example.com. SVCB 16 foo.example.com. port=53`: `example.com. 3600 IN SVCB 16 foo.example.com. port="53"`,
`example.com. SVCB 1 foo.example.com. key667=hello`: `example.com. 3600 IN SVCB 1 foo.example.com. key667="hello"`,
`example.com. SVCB 1 foo.example.com. key667="hello\210qoo"`: `example.com. 3600 IN SVCB 1 foo.example.com. key667="hello\210qoo"`,
`example.com. SVCB 1 foo.example.com. ipv6hint="2001:db8::1,2001:db8::53:1"`: `example.com. 3600 IN SVCB 1 foo.example.com. ipv6hint="2001:db8::1,2001:db8::53:1"`,
`example.com. SVCB 1 example.com. ipv6hint="2001:db8::198.51.100.100"`: `example.com. 3600 IN SVCB 1 example.com. ipv6hint="2001:db8::c633:6464"`,
`example.com. SVCB 16 foo.example.org. alpn=h2,h3-19 mandatory=ipv4hint,alpn ipv4hint=192.0.2.1`: `example.com. 3600 IN SVCB 16 foo.example.org. alpn="h2,h3-19" mandatory="ipv4hint,alpn" ipv4hint="192.0.2.1"`,
`example.com. SVCB 16 foo.example.org. alpn="f\\\\oo\\,bar,h2"`: `example.com. 3600 IN SVCB 16 foo.example.org. alpn="f\\\092oo\\\044bar,h2"`,
`example.com. SVCB 16 foo.example.org. alpn=f\\\092oo\092,bar,h2`: `example.com. 3600 IN SVCB 16 foo.example.org. alpn="f\\\092oo\\\044bar,h2"`,
// From draft-ietf-add-ddr-06
`_dns.example.net. SVCB 1 example.net. alpn=h2 dohpath=/dns-query{?dns}`: `_dns.example.net. 3600 IN SVCB 1 example.net. alpn="h2" dohpath="/dns-query{?dns}"`,
}
for s, o := range svcbs {
rr, err := NewRR(s)
if err != nil {
t.Error("failed to parse RR: ", err)
continue
}
if rr.String() != o {
t.Errorf("`%s' should be equal to\n`%s', but is `%s'", s, o, rr.String())
}
}
}
func TestParseBadSVCB(t *testing.T) {
header := `example.com. 3600 IN HTTPS `
evils := []string{
`65536 . no-default-alpn`, // bad priority
`1 ..`, // bad domain
`1 . no-default-alpn=1`, // value illegal
`1 . key`, // invalid key
`1 . key=`, // invalid key
`1 . =`, // invalid key
`1 . ==`, // invalid key
`1 . =a`, // invalid key
`1 . ""`, // invalid key
`1 . ""=`, // invalid key
`1 . "a"`, // invalid key
`1 . "a"=`, // invalid key
`1 . key1=`, // we know that key
`1 . key65535`, // key reserved
`1 . key065534`, // key can't be padded
`1 . key65534="f`, // unterminated value
`1 . key65534="`, // unterminated value
`1 . key65534=\2`, // invalid numeric escape
`1 . key65534=\24`, // invalid numeric escape
`1 . key65534=\256`, // invalid numeric escape
`1 . key65534=\`, // invalid numeric escape
`1 . key65534=""alpn`, // zQuote ending needs whitespace
`1 . key65534="a"alpn`, // zQuote ending needs whitespace
`1 . ipv6hint=1.1.1.1`, // not ipv6
`1 . ipv6hint=1:1:1:1`, // not ipv6
`1 . ipv6hint=a`, // not ipv6
`1 . ipv6hint=`, // empty ipv6
`1 . ipv4hint=1.1.1.1.1`, // not ipv4
`1 . ipv4hint=::fc`, // not ipv4
`1 . ipv4hint=..11`, // not ipv4
`1 . ipv4hint=a`, // not ipv4
`1 . ipv4hint=`, // empty ipv4
`1 . port=`, // empty port
`1 . echconfig=YUd`, // bad base64
`1 . alpn=h\`, // unterminated escape
`1 . alpn=h2\\.h3`, // comma-separated list with bad character
`1 . alpn=h2,,h3`, // empty protocol identifier
`1 . alpn=h3,`, // final protocol identifier empty
}
for _, o := range evils {
_, err := NewRR(header + o)
if err == nil {
t.Error("failed to reject invalid RR: ", header+o)
continue
}
}
}
func TestParseBadNAPTR(t *testing.T) {
// Should look like: mplus.ims.vodafone.com. 3600 IN NAPTR 10 100 "S" "SIP+D2U" "" _sip._udp.mplus.ims.vodafone.com.
naptr := `mplus.ims.vodafone.com. 3600 IN NAPTR 10 100 S SIP+D2U _sip._udp.mplus.ims.vodafone.com.`
_, err := NewRR(naptr) // parse fails, we should not have leaked a goroutine.
if err == nil {
t.Fatalf("parsing NAPTR should have failed: %s", naptr)
}
if err := goroutineLeaked(); err != nil {
t.Errorf("leaked goroutines: %s", err)
}
}
func TestUnbalancedParens(t *testing.T) {
sig := `example.com. 3600 IN RRSIG MX 15 2 3600 (
1440021600 1438207200 3613 example.com. (
oL9krJun7xfBOIWcGHi7mag5/hdZrKWw15jPGrHpjQeRAvTdszaPD+QLs3f
x8A4M3e23mRZ9VrbpMngwcrqNAg== )`
_, err := NewRR(sig)
if err == nil {
t.Fatalf("failed to detect extra opening brace")
}
}
func TestBad(t *testing.T) {
tests := []string{
`" TYPE257 9 1E12\x00\x105"`,
`" TYPE256 9 5"`,
`" TYPE257 0\"00000000000000400000000000000000000\x00\x10000000000000000000000000000000000 9 l\x16\x01\x005266"`,
}
for i := range tests {
s, err := strconv.Unquote(tests[i])
if err != nil {
t.Fatalf("failed to unquote: %q: %s", tests[i], err)
}
if _, err = NewRR(s); err == nil {
t.Errorf("correctly parsed %q", s)
}
}
}
func TestNULLRecord(t *testing.T) {
// packet captured from iodine
packet := `8116840000010001000000000569627a6c700474657374046d69656b026e6c00000a0001c00c000a0001000000000005497f000001`
data, _ := hex.DecodeString(packet)
msg := new(Msg)
err := msg.Unpack(data)
if err != nil {
t.Fatalf("Failed to unpack NULL record")
}
if _, ok := msg.Answer[0].(*NULL); !ok {
t.Fatalf("Expected packet to contain NULL record")
}
}
func TestParseAPL(t *testing.T) {
tests := []struct {
name string
in string
expect string
}{
{
"v4",
". APL 1:192.0.2.0/24",
".\t3600\tIN\tAPL\t1:192.0.2.0/24",
},
{
"v6",
". APL 2:2001:db8::/32",
".\t3600\tIN\tAPL\t2:2001:db8::/32",
},
{
"null v6",
". APL 2:::/0",
".\t3600\tIN\tAPL\t2:::/0",
},
{
"null v4",
". APL 1:0.0.0.0/0",
".\t3600\tIN\tAPL\t1:0.0.0.0/0",
},
{
"full v6",
". APL 2:::/0",
".\t3600\tIN\tAPL\t2:::/0",
},
{
"full v4",
". APL 1:192.0.2.1/32",
".\t3600\tIN\tAPL\t1:192.0.2.1/32",
},
{
"full v6",
". APL 2:2001:0db8:d2b4:b6ba:50db:49cc:a8d1:5bb1/128",
".\t3600\tIN\tAPL\t2:2001:db8:d2b4:b6ba:50db:49cc:a8d1:5bb1/128",
},
{
"v4in6",
". APL 2:::ffff:192.0.2.0/120",
".\t3600\tIN\tAPL\t2:::ffff:192.0.2.0/120",
},
{
"v4in6 v6 syntax",
". APL 2:::ffff:c000:0200/120",
".\t3600\tIN\tAPL\t2:::ffff:192.0.2.0/120",
},
{
"negate",
". APL !1:192.0.2.0/24",
".\t3600\tIN\tAPL\t!1:192.0.2.0/24",
},
{
"multiple",
". APL 1:192.0.2.0/24 !1:192.0.2.1/32 2:2001:db8::/32 !2:2001:db8:1::0/48",
".\t3600\tIN\tAPL\t1:192.0.2.0/24 !1:192.0.2.1/32 2:2001:db8::/32 !2:2001:db8:1::/48",
},
{
"no address",
". APL",
".\t3600\tIN\tAPL\t",
},
}
for _, tc := range tests {
t.Run(tc.name, func(t *testing.T) {
rr, err := NewRR(tc.in)
if err != nil {
t.Fatalf("failed to parse RR: %s", err)
}
got := rr.String()
if got != tc.expect {
t.Errorf("expected %q, got %q", tc.expect, got)
}
})
}
}
func TestParseAPLErrors(t *testing.T) {
tests := []struct {
name string
in string
}{
{
"unexpected",
`. APL ""`,
},
{
"unrecognized family",
". APL 3:0.0.0.0/0",
},
{
"malformed family",
". APL foo:0.0.0.0/0",
},
{
"malformed address",
". APL 1:192.0.2/16",
},
{
"extra bits",
". APL 2:2001:db8::/0",
},
{
"address mismatch v2",
". APL 1:2001:db8::/64",
},
{
"address mismatch v6",
". APL 2:192.0.2.1/32",
},
{
"no prefix",
". APL 1:192.0.2.1",
},
{
"no family",
". APL 0.0.0.0/0",
},
}
for _, tc := range tests {
t.Run(tc.name, func(t *testing.T) {
_, err := NewRR(tc.in)
if err == nil {
t.Fatal("expected error, got none")
}
})
}
}
func TestUnpackRRWithHeaderInvalidLengths(t *testing.T) {
rr, err := NewRR("test.example.org. 300 IN SSHFP 1 2 BC6533CDC95A79078A39A56EA7635984ED655318ADA9B6159E30723665DA95BB")
if err != nil {
t.Fatalf("failed to parse SSHFP record: %v", err)
}
buf := make([]byte, Len(rr))
headerEnd, end, err := packRR(rr, buf, 0, compressionMap{}, false)
if err != nil {
t.Fatalf("failed to pack A record: %v", err)
}
rr.Header().Rdlength = uint16(end - headerEnd)
for _, off := range []int{
-1,
end + 1,
1<<16 - 1,
} {
_, _, err := UnpackRRWithHeader(*rr.Header(), buf, off)
if de, ok := err.(*Error); !ok || de.err != "bad off" {
t.Errorf("UnpackRRWithHeader with bad offset (%d) returned wrong or no error: %v", off, err)
}
}
for _, rdlength := range []uint16{
uint16(end - headerEnd + 1),
uint16(end),
1<<16 - 1,
} {
rr.Header().Rdlength = rdlength
_, _, err := UnpackRRWithHeader(*rr.Header(), buf, headerEnd)
if de, ok := err.(*Error); !ok || de.err != "bad rdlength" {
t.Errorf("UnpackRRWithHeader with bad rdlength (%d) returned wrong or no error: %v", rdlength, err)
}
}
}
func TestParseZONEMD(t *testing.T) {
// Uses examples from https://tools.ietf.org/html/rfc8976
dt := map[string]string{
// Simple Zone
`example. 86400 IN ZONEMD 2018031900 1 1 (
c68090d90a7aed71
6bc459f9340e3d7c
1370d4d24b7e2fc3
a1ddc0b9a87153b9
a9713b3c9ae5cc27
777f98b8e730044c )
`: "example.\t86400\tIN\tZONEMD\t2018031900 1 1 c68090d90a7aed716bc459f9340e3d7c1370d4d24b7e2fc3a1ddc0b9a87153b9a9713b3c9ae5cc27777f98b8e730044c",
// Complex Zone
`example. 86400 IN ZONEMD 2018031900 1 1 (
a3b69bad980a3504
e1cffcb0fd6397f9
3848071c93151f55
2ae2f6b1711d4bd2
d8b39808226d7b9d
b71e34b72077f8fe )
`: "example.\t86400\tIN\tZONEMD\t2018031900 1 1 a3b69bad980a3504e1cffcb0fd6397f93848071c93151f552ae2f6b1711d4bd2d8b39808226d7b9db71e34b72077f8fe",
// Multiple Digests Zone
`example. 86400 IN ZONEMD 2018031900 1 1 (
62e6cf51b02e54b9
b5f967d547ce4313
6792901f9f88e637
493daaf401c92c27
9dd10f0edb1c56f8
080211f8480ee306 )
`: "example.\t86400\tIN\tZONEMD\t2018031900 1 1 62e6cf51b02e54b9b5f967d547ce43136792901f9f88e637493daaf401c92c279dd10f0edb1c56f8080211f8480ee306",
`example. 86400 IN ZONEMD 2018031900 1 2 (
08cfa1115c7b948c
4163a901270395ea
226a930cd2cbcf2f
a9a5e6eb85f37c8a
4e114d884e66f176
eab121cb02db7d65
2e0cc4827e7a3204
f166b47e5613fd27 )
`: "example.\t86400\tIN\tZONEMD\t2018031900 1 2 08cfa1115c7b948c4163a901270395ea226a930cd2cbcf2fa9a5e6eb85f37c8a4e114d884e66f176eab121cb02db7d652e0cc4827e7a3204f166b47e5613fd27",
`example. 86400 IN ZONEMD 2018031900 1 240 (
e2d523f654b9422a
96c5a8f44607bbee )
`: "example. 86400 IN ZONEMD 2018031900 1 240 e2d523f654b9422a96c5a8f44607bbee",
`example. 86400 IN ZONEMD 2018031900 241 1 (
e1846540e33a9e41
89792d18d5d131f6
05fc283e )
`: "example. 86400 IN ZONEMD 2018031900 241 1 e1846540e33a9e4189792d18d5d131f605fc283e",
// URI.ARPA zone
`uri.arpa. 3600 IN ZONEMD 2018100702 1 1 (
0dbc3c4dbfd75777c12ca19c337854b1577799901307c482e9d91d5d15
cd934d16319d98e30c4201cf25a1d5a0254960 )`: "uri.arpa.\t3600\tIN\tZONEMD\t2018100702 1 1 0dbc3c4dbfd75777c12ca19c337854b1577799901307c482e9d91d5d15cd934d16319d98e30c4201cf25a1d5a0254960",
// ROOT-SERVERS.NET Zone
`root-servers.net. 3600000 IN ZONEMD 2018091100 1 1 (
f1ca0ccd91bd5573d9f431c00ee0101b2545c97602be0a97
8a3b11dbfc1c776d5b3e86ae3d973d6b5349ba7f04340f79 )
`: "root-servers.net.\t3600000\tIN\tZONEMD\t2018091100 1 1 f1ca0ccd91bd5573d9f431c00ee0101b2545c97602be0a978a3b11dbfc1c776d5b3e86ae3d973d6b5349ba7f04340f79",
}
for i, o := range dt {
rr, err := NewRR(i)
if err != nil {
t.Error("failed to parse RR: ", err)
continue
}
if rr.String() != o {
t.Errorf("`%s' should be equal to\n`%s', but is `%s'", i, o, rr.String())
}
}
}
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