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parse_test.go
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parse_test.go
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package dns
import (
"bytes"
"crypto/rsa"
"encoding/hex"
"fmt"
"math/rand"
"net"
"reflect"
"strconv"
"strings"
"testing"
"testing/quick"
"time"
)
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")
} else {
t.Logf("error is %v", err)
}
_, err = NewRR("..com. IN A 127.0.0.1")
if err == nil {
t.Error("should fail")
} else {
t.Logf("error is %v", err)
}
}
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{'.', '(', ')', ';', ' ', '@', '"', '\\', '\t', '\r', '\n', 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)
t.Errorf(" Bytes: %v", rrbytes)
t.Errorf("String: %v", s)
}
repacked := make([]byte, len(rrbytes))
if _, err := PackRR(rr2, repacked, 0, nil, false); err != nil {
t.Errorf("error packing parsed RR: %v", err)
t.Errorf(" original Bytes: %v", rrbytes)
t.Errorf("unpacked Struct: %v", rr1)
t.Errorf(" parsed Struct: %v", rr2)
}
if !bytes.Equal(repacked, rrbytes) {
t.Error("packed bytes don't match original bytes")
t.Errorf(" original bytes: %v", rrbytes)
t.Errorf(" packed bytes: %v", repacked)
t.Errorf("unpacked struct: %v", rr1)
t.Errorf(" parsed struct: %v", rr2)
}
}
}
func TestTXTEscapeParsing(t *testing.T) {
test := [][]string{
{`";"`, `";"`},
{`\;`, `";"`},
{`"\t"`, `"\t"`},
{`"\r"`, `"\r"`},
{`"\ "`, `" "`},
{`"\;"`, `";"`},
{`"\;\""`, `";\""`},
{`"\(a\)"`, `"(a)"`},
{`"\(a)"`, `"(a)"`},
{`"(a\)"`, `"(a)"`},
{`"(a)"`, `"(a)"`},
{`"\048"`, `"0"`},
{`"\` + "\n" + `"`, `"\n"`},
{`"\` + "\r" + `"`, `"\r"`},
{`"\` + "\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 intrepret 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 intrepret 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))
rrbytes = append(rrbytes, 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 {
// string'ing 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())
} else {
t.Logf("RR is OK: `%s'", 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",
}
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())
} else {
t.Logf("RR is OK: `%s'", rr.String())
}
}
}
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",
}
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())
} else {
t.Logf("RR is OK: `%s'", rr.String())
}
}
}
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())
} else {
t.Logf("RR is OK: `%s'", 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\\n 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())
} else {
t.Logf("RR is OK: `%s'", 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",
}
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())
} else {
t.Logf("RR is OK: `%s'", 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())
} else {
t.Logf("RR is OK: `%s'", 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 TestZoneParsing(t *testing.T) {
// parse_test.db
db := `
a.example.com. IN A 127.0.0.1
8db7._openpgpkey.example.com. IN OPENPGPKEY mQCNAzIG
$ORIGIN a.example.com.
test IN A 127.0.0.1
IN SSHFP 1 2 (
BC6533CDC95A79078A39A56EA7635984ED655318ADA9
B6159E30723665DA95BB )
$ORIGIN b.example.com.
test IN CNAME test.a.example.com.
`
start := time.Now().UnixNano()
to := ParseZone(strings.NewReader(db), "", "parse_test.db")
var i int
for x := range to {
i++
if x.Error != nil {
t.Error(x.Error)
continue
}
t.Log(x.RR)
}
delta := time.Now().UnixNano() - start
t.Logf("%d RRs parsed in %.2f s (%.2f RR/s)", i, float32(delta)/1e9, float32(i)/(float32(delta)/1e9))
}
func ExampleZone() {
zone := `$ORIGIN .
$TTL 3600 ; 1 hour
name IN SOA a6.nstld.com. hostmaster.nic.name. (
203362132 ; serial
300 ; refresh (5 minutes)
300 ; retry (5 minutes)
1209600 ; expire (2 weeks)
300 ; minimum (5 minutes)
)
$TTL 10800 ; 3 hours
name. 10800 IN NS name.
IN NS g6.nstld.com.
7200 NS h6.nstld.com.
3600 IN NS j6.nstld.com.
IN 3600 NS k6.nstld.com.
NS l6.nstld.com.
NS a6.nstld.com.
NS c6.nstld.com.
NS d6.nstld.com.
NS f6.nstld.com.
NS m6.nstld.com.
(
NS m7.nstld.com.
)
$ORIGIN name.
0-0onlus NS ns7.ehiweb.it.
NS ns8.ehiweb.it.
0-g MX 10 mx01.nic
MX 10 mx02.nic
MX 10 mx03.nic
MX 10 mx04.nic
$ORIGIN 0-g.name
moutamassey NS ns01.yahoodomains.jp.
NS ns02.yahoodomains.jp.
`
to := ParseZone(strings.NewReader(zone), "", "testzone")
for x := range to {
fmt.Println(x.RR)
}
// Output:
// name. 3600 IN SOA a6.nstld.com. hostmaster.nic.name. 203362132 300 300 1209600 300
// name. 10800 IN NS name.
// name. 10800 IN NS g6.nstld.com.
// name. 7200 IN NS h6.nstld.com.
// name. 3600 IN NS j6.nstld.com.
// name. 3600 IN NS k6.nstld.com.
// name. 10800 IN NS l6.nstld.com.
// name. 10800 IN NS a6.nstld.com.
// name. 10800 IN NS c6.nstld.com.
// name. 10800 IN NS d6.nstld.com.
// name. 10800 IN NS f6.nstld.com.
// name. 10800 IN NS m6.nstld.com.
// name. 10800 IN NS m7.nstld.com.
// 0-0onlus.name. 10800 IN NS ns7.ehiweb.it.
// 0-0onlus.name. 10800 IN NS ns8.ehiweb.it.
// 0-g.name. 10800 IN MX 10 mx01.nic.name.
// 0-g.name. 10800 IN MX 10 mx02.nic.name.
// 0-g.name. 10800 IN MX 10 mx03.nic.name.
// 0-g.name. 10800 IN MX 10 mx04.nic.name.
// moutamassey.0-g.name.name. 10800 IN NS ns01.yahoodomains.jp.
// moutamassey.0-g.name.name. 10800 IN NS ns02.yahoodomains.jp.
}
func ExampleHIP() {
h := `www.example.com IN HIP ( 2 200100107B1A74DF365639CC39F1D578
AwEAAbdxyhNuSutc5EMzxTs9LBPCIkOFH8cIvM4p
9+LrV4e19WzK00+CI6zBCQTdtWsuxKbWIy87UOoJTwkUs7lBu+Upr1gsNrut79ryra+bSRGQ
b1slImA8YVJyuIDsj7kwzG7jnERNqnWxZ48AWkskmdHaVDP4BcelrTI3rMXdXF5D
rvs.example.com. )`
if hip, err := NewRR(h); err == nil {
fmt.Println(hip.String())
}
// Output:
// www.example.com. 3600 IN HIP 2 200100107B1A74DF365639CC39F1D578 AwEAAbdxyhNuSutc5EMzxTs9LBPCIkOFH8cIvM4p9+LrV4e19WzK00+CI6zBCQTdtWsuxKbWIy87UOoJTwkUs7lBu+Upr1gsNrut79ryra+bSRGQb1slImA8YVJyuIDsj7kwzG7jnERNqnWxZ48AWkskmdHaVDP4BcelrTI3rMXdXF5D rvs.example.com.
}
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)
}
t.Logf("RR: %s", rr)
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)
t.Logf("RR: %s", rr)
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)
}
}
}
}
func ExampleSOA() {
s := "example.com. 1000 SOA master.example.com. admin.example.com. 1 4294967294 4294967293 4294967295 100"
if soa, err := NewRR(s); err == nil {
fmt.Println(soa.String())
}
// Output:
// example.com. 1000 IN SOA master.example.com. admin.example.com. 1 4294967294 4294967293 4294967295 100
}
func TestLineNumberError(t *testing.T) {
s := "example.com. 1000 SOA master.example.com. admin.example.com. monkey 4294967294 4294967293 4294967295 100"
if _, err := NewRR(s); err != nil {
if err.Error() != "dns: bad SOA zone parameter: \"monkey\" at line: 1:68" {
t.Error("not expecting this error: ", err)
}
}
}
// 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) {
for _ = range ParseZone(strings.NewReader(""), "", "") {
t.Errorf("should be empty")
}
}
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 ExampleGenerate() {
// From the manual: http://www.bind9.net/manual/bind/9.3.2/Bv9ARM.ch06.html#id2566761
zone := "$GENERATE 1-2 0 NS SERVER$.EXAMPLE.\n$GENERATE 1-8 $ CNAME $.0"
to := ParseZone(strings.NewReader(zone), "0.0.192.IN-ADDR.ARPA.", "")
for x := range to {
if x.Error == nil {
fmt.Println(x.RR.String())
}
}
// Output:
// 0.0.0.192.IN-ADDR.ARPA. 3600 IN NS SERVER1.EXAMPLE.
// 0.0.0.192.IN-ADDR.ARPA. 3600 IN NS SERVER2.EXAMPLE.
// 1.0.0.192.IN-ADDR.ARPA. 3600 IN CNAME 1.0.0.0.192.IN-ADDR.ARPA.
// 2.0.0.192.IN-ADDR.ARPA. 3600 IN CNAME 2.0.0.0.192.IN-ADDR.ARPA.
// 3.0.0.192.IN-ADDR.ARPA. 3600 IN CNAME 3.0.0.0.192.IN-ADDR.ARPA.
// 4.0.0.192.IN-ADDR.ARPA. 3600 IN CNAME 4.0.0.0.192.IN-ADDR.ARPA.
// 5.0.0.192.IN-ADDR.ARPA. 3600 IN CNAME 5.0.0.0.192.IN-ADDR.ARPA.
// 6.0.0.192.IN-ADDR.ARPA. 3600 IN CNAME 6.0.0.0.192.IN-ADDR.ARPA.
// 7.0.0.192.IN-ADDR.ARPA. 3600 IN CNAME 7.0.0.0.192.IN-ADDR.ARPA.
// 8.0.0.192.IN-ADDR.ARPA. 3600 IN CNAME 8.0.0.0.192.IN-ADDR.ARPA.
}
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 := 8484
tmp, err := strconv.Atoi(p)
if err == nil {
port = tmp
}
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 r, 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")
} else {
t.Logf("parsed %s", r.String())
}
if r, err := NewRR(`nul\000gap.test.globnix.net. 600 IN TXT "Hello\123"`); err != nil {
t.Errorf("could not create RR with \\000 in it")
} else {
t.Logf("parsed %s", r.String())
}
if r, err := NewRR(`m\ @\ iek.nl. IN 3600 A 127.0.0.1`); err != nil {
t.Errorf("could not create RR with \\ and \\@ in it")
} else {
t.Logf("parsed %s", r.String())
}
}
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 TestNsapGposEidNimloc(t *testing.T) {
dt := map[string]string{
"foo.bar.com. IN NSAP 21 47000580ffff000000321099991111222233334444": "foo.bar.com.\t3600\tIN\tNSAP\t0x47000580ffff000000321099991111222233334444",
"foo.bar.com. IN NSAP 0x47000580ffff000000321099991111222233334444": "foo.bar.com.\t3600\tIN\tNSAP\t0x47000580ffff000000321099991111222233334444",
"host.school.de IN NSAP 17 39276f3100111100002222333344449876": "host.school.de.\t3600\tIN\tNSAP\t0x39276f3100111100002222333344449876",
"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())
} else {
t.Logf("RR is OK: `%s'", 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())
} else {
t.Logf("RR is OK: `%s'", rr.String())
}
}
}
func TestComment(t *testing.T) {
// Comments we must see
comments := map[string]bool{"; this is comment 1": 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 comment2
)
; this is comment3
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 comment5
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
`
for x := range ParseZone(strings.NewReader(zone), ".", "") {
if x.Error == nil {
if x.Comment != "" {
if _, ok := comments[x.Comment]; !ok {
t.Errorf("wrong comment %s", x.Comment)
}
}
}
}
}
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())
}
}
}