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Name	Size	Permission
.github	[ DIR ]	dr-xr-xr-x
dnsutil	[ DIR ]	dr-xr-xr-x
.codecov.yml	128 B	-r--r--r--
.gitignore	24 B	-r--r--r--
AUTHORS	27 B	-r--r--r--
CODEOWNERS	18 B	-r--r--r--
CONTRIBUTORS	150 B	-r--r--r--
COPYRIGHT	512 B	-r--r--r--
LICENSE	1.58 KB	-r--r--r--
Makefile.fuzz	671 B	-r--r--r--
Makefile.release	992 B	-r--r--r--
README.md	5.83 KB	-r--r--r--
acceptfunc.go	1.83 KB	-r--r--r--
acceptfunc_test.go	859 B	-r--r--r--
client.go	13.88 KB	-r--r--r--
client_test.go	16.25 KB	-r--r--r--
clientconfig.go	3.3 KB	-r--r--r--
clientconfig_test.go	4.63 KB	-r--r--r--
dane.go	997 B	-r--r--r--
defaults.go	10.3 KB	-r--r--r--
dns.go	4.34 KB	-r--r--r--
dns_bench_test.go	9.42 KB	-r--r--r--
dns_test.go	9.95 KB	-r--r--r--
dnssec.go	18.32 KB	-r--r--r--
dnssec_keygen.go	3.1 KB	-r--r--r--
dnssec_keyscan.go	6.16 KB	-r--r--r--
dnssec_privkey.go	2.27 KB	-r--r--r--
dnssec_test.go	28.57 KB	-r--r--r--
doc.go	10.54 KB	-r--r--r--
duplicate.go	953 B	-r--r--r--
duplicate_generate.go	3.95 KB	-r--r--r--
duplicate_test.go	3.77 KB	-r--r--r--
dyn_test.go	37 B	-r--r--r--
edns.go	19.69 KB	-r--r--r--
edns_test.go	3.09 KB	-r--r--r--
example_test.go	3.12 KB	-r--r--r--
format.go	2.4 KB	-r--r--r--
format_test.go	279 B	-r--r--r--
fuzz.go	536 B	-r--r--r--
fuzz_test.go	7.54 KB	-r--r--r--
generate.go	4.97 KB	-r--r--r--
generate_test.go	6.93 KB	-r--r--r--
go.mod	210 B	-r--r--r--
go.sum	1 KB	-r--r--r--
issue_test.go	1.19 KB	-r--r--r--
labels.go	4.11 KB	-r--r--r--
labels_test.go	7.88 KB	-r--r--r--
leak_test.go	1.81 KB	-r--r--r--
length_test.go	20.49 KB	-r--r--r--
listen_go111.go	881 B	-r--r--r--
listen_go_not111.go	485 B	-r--r--r--
msg.go	31.99 KB	-r--r--r--
msg_generate.go	10.22 KB	-r--r--r--
msg_helpers.go	21.54 KB	-r--r--r--
msg_helpers_test.go	11.86 KB	-r--r--r--
msg_test.go	9.12 KB	-r--r--r--
msg_truncate.go	3.4 KB	-r--r--r--
msg_truncate_test.go	5 KB	-r--r--r--
nsecx.go	2.38 KB	-r--r--r--
nsecx_test.go	4.77 KB	-r--r--r--
parse_test.go	65.88 KB	-r--r--r--
privaterr.go	3.23 KB	-r--r--r--
privaterr_test.go	3.51 KB	-r--r--r--
reverse.go	1.32 KB	-r--r--r--
rr_test.go	191 B	-r--r--r--
sanitize.go	1.98 KB	-r--r--r--
sanitize_test.go	2 KB	-r--r--r--
scan.go	29.12 KB	-r--r--r--
scan_rr.go	40.59 KB	-r--r--r--
scan_test.go	8.88 KB	-r--r--r--
serve_mux.go	3.37 KB	-r--r--r--
serve_mux_test.go	1.63 KB	-r--r--r--
server.go	21.53 KB	-r--r--r--
server_test.go	31.38 KB	-r--r--r--
sig0.go	4.59 KB	-r--r--r--
sig0_test.go	2.23 KB	-r--r--r--
singleinflight.go	1.56 KB	-r--r--r--
smimea.go	1.33 KB	-r--r--r--
svcb.go	19.95 KB	-r--r--r--
svcb_test.go	2.48 KB	-r--r--r--
tlsa.go	1.1 KB	-r--r--r--
tsig.go	10.98 KB	-r--r--r--
tsig_test.go	10.75 KB	-r--r--r--
types.go	36.03 KB	-r--r--r--
types_generate.go	8.63 KB	-r--r--r--
types_test.go	4.31 KB	-r--r--r--
udp.go	2.9 KB	-r--r--r--
udp_test.go	4.41 KB	-r--r--r--
udp_windows.go	1.15 KB	-r--r--r--
update.go	3.08 KB	-r--r--r--
update_test.go	4.38 KB	-r--r--r--
version.go	275 B	-r--r--r--
version_test.go	180 B	-r--r--r--
xfr.go	6.57 KB	-r--r--r--
xfr_test.go	2.72 KB	-r--r--r--
zduplicate.go	20.23 KB	-r--r--r--
zmsg.go	59.75 KB	-r--r--r--
ztypes.go	29.52 KB	-r--r--r--

Code Editor : scan_test.go

package dns

import (
	"io"
	"io/ioutil"
	"net"
	"os"
	"strings"
	"testing"
)

func TestZoneParserGenerate(t *testing.T) {
	zone := "$ORIGIN example.org.\n$GENERATE 10-12 foo${2,3,d} IN A 127.0.0.$"

wantRRs := []RR{
		&A{Hdr: RR_Header{Name: "foo012.example.org."}, A: net.ParseIP("127.0.0.10")},
		&A{Hdr: RR_Header{Name: "foo013.example.org."}, A: net.ParseIP("127.0.0.11")},
		&A{Hdr: RR_Header{Name: "foo014.example.org."}, A: net.ParseIP("127.0.0.12")},
	}

wantIdx := 0

z := NewZoneParser(strings.NewReader(zone), "", "")

for rr, ok := z.Next(); ok; rr, ok = z.Next() {
		if wantIdx >= len(wantRRs) {
			t.Fatalf("expected %d RRs, but got more", len(wantRRs))
		}
		if got, want := rr.Header().Name, wantRRs[wantIdx].Header().Name; got != want {
			t.Fatalf("expected name %s, but got %s", want, got)
		}
		a, okA := rr.(*A)
		if !okA {
			t.Fatalf("expected *A RR, but got %T", rr)
		}
		if got, want := a.A, wantRRs[wantIdx].(*A).A; !got.Equal(want) {
			t.Fatalf("expected A with IP %v, but got %v", got, want)
		}
		wantIdx++
	}

if err := z.Err(); err != nil {
		t.Fatalf("expected no error, but got %s", err)
	}

if wantIdx != len(wantRRs) {
		t.Errorf("too few records, expected %d, got %d", len(wantRRs), wantIdx)
	}
}

func TestZoneParserInclude(t *testing.T) {

tmpfile, err := ioutil.TempFile("", "dns")
	if err != nil {
		t.Fatalf("could not create tmpfile for test: %s", err)
	}
	defer os.Remove(tmpfile.Name())

if _, err := tmpfile.WriteString("foo\tIN\tA\t127.0.0.1"); err != nil {
		t.Fatalf("unable to write content to tmpfile %q: %s", tmpfile.Name(), err)
	}
	if err := tmpfile.Close(); err != nil {
		t.Fatalf("could not close tmpfile %q: %s", tmpfile.Name(), err)
	}

zone := "$ORIGIN example.org.\n$INCLUDE " + tmpfile.Name() + "\nbar\tIN\tA\t127.0.0.2"

var got int
	z := NewZoneParser(strings.NewReader(zone), "", "")
	z.SetIncludeAllowed(true)
	for rr, ok := z.Next(); ok; _, ok = z.Next() {
		switch rr.Header().Name {
		case "foo.example.org.", "bar.example.org.":
		default:
			t.Fatalf("expected foo.example.org. or bar.example.org., but got %s", rr.Header().Name)
		}
		got++
	}
	if err := z.Err(); err != nil {
		t.Fatalf("expected no error, but got %s", err)
	}

if expected := 2; got != expected {
		t.Errorf("failed to parse zone after include, expected %d records, got %d", expected, got)
	}

os.Remove(tmpfile.Name())

z = NewZoneParser(strings.NewReader(zone), "", "")
	z.SetIncludeAllowed(true)
	z.Next()
	if err := z.Err(); err == nil ||
		!strings.Contains(err.Error(), "failed to open") ||
		!strings.Contains(err.Error(), tmpfile.Name()) ||
		!strings.Contains(err.Error(), "no such file or directory") {
		t.Fatalf(`expected error to contain: "failed to open", %q and "no such file or directory" but got: %s`,
			tmpfile.Name(), err)
	}
}

func TestZoneParserIncludeDisallowed(t *testing.T) {
	tmpfile, err := ioutil.TempFile("", "dns")
	if err != nil {
		t.Fatalf("could not create tmpfile for test: %s", err)
	}
	defer os.Remove(tmpfile.Name())

zp := NewZoneParser(strings.NewReader("$INCLUDE "+tmpfile.Name()), "example.org.", "")

for _, ok := zp.Next(); ok; _, ok = zp.Next() {
	}

const expect = "$INCLUDE directive not allowed"
	if err := zp.Err(); err == nil || !strings.Contains(err.Error(), expect) {
		t.Errorf("expected error to contain %q, got %v", expect, err)
	}
}

func TestZoneParserAddressAAAA(t *testing.T) {
	tests := []struct {
		record string
		want   *AAAA
	}{
		{
			record: "1.example.org. 600 IN AAAA ::1",
			want:   &AAAA{Hdr: RR_Header{Name: "1.example.org."}, AAAA: net.IPv6loopback},
		},
		{
			record: "2.example.org. 600 IN AAAA ::FFFF:127.0.0.1",
			want:   &AAAA{Hdr: RR_Header{Name: "2.example.org."}, AAAA: net.ParseIP("::FFFF:127.0.0.1")},
		},
	}

for _, tc := range tests {
		got, err := NewRR(tc.record)
		if err != nil {
			t.Fatalf("expected no error, but got %s", err)
		}
		aaaa, ok := got.(*AAAA)
		if !ok {
			t.Fatalf("expected *AAAA RR, but got %T", got)
		}
		if !aaaa.AAAA.Equal(tc.want.AAAA) {
			t.Fatalf("expected AAAA with IP %v, but got %v", tc.want.AAAA, aaaa.AAAA)
		}
	}
}

func TestZoneParserAddressBad(t *testing.T) {
	records := []string{
		"1.bad.example.org. 600 IN A ::1",
		"2.bad.example.org. 600 IN A ::FFFF:127.0.0.1",
		"3.bad.example.org. 600 IN AAAA 127.0.0.1",
	}

for _, record := range records {
		const expect = "bad A"
		if got, err := NewRR(record); err == nil || !strings.Contains(err.Error(), expect) {
			t.Errorf("NewRR(%v) = %v, want err to contain %q", record, got, expect)
		}
	}
}

func TestParseTA(t *testing.T) {
	rr, err := NewRR(` Ta 0 0 0`)
	if err != nil {
		t.Fatalf("expected no error, but got %s", err)
	}
	if rr == nil {
		t.Fatal(`expected a normal RR, but got nil`)
	}
}

var errTestReadError = &Error{"test error"}

type errReader struct{}

func (errReader) Read(p []byte) (int, error) { return 0, errTestReadError }

func TestParseZoneReadError(t *testing.T) {
	rr, err := ReadRR(errReader{}, "")
	if err == nil || !strings.Contains(err.Error(), errTestReadError.Error()) {
		t.Errorf("expected error to contain %q, but got %v", errTestReadError, err)
	}
	if rr != nil {
		t.Errorf("expected a nil RR, but got %v", rr)
	}
}

func TestUnexpectedNewline(t *testing.T) {
	zone := `
example.com. 60 PX
1000 TXT 1K
`
	zp := NewZoneParser(strings.NewReader(zone), "example.com.", "")
	for _, ok := zp.Next(); ok; _, ok = zp.Next() {
	}

const expect = `dns: unexpected newline: "\n" at line: 2:18`
	if err := zp.Err(); err == nil || err.Error() != expect {
		t.Errorf("expected error to contain %q, got %v", expect, err)
	}

// Test that newlines inside braces still work.
	zone = `
example.com. 60 PX (
1000 TXT 1K )
`
	zp = NewZoneParser(strings.NewReader(zone), "example.com.", "")

var count int
	for _, ok := zp.Next(); ok; _, ok = zp.Next() {
		count++
	}

if count != 1 {
		t.Errorf("expected 1 record, got %d", count)
	}

if err := zp.Err(); err != nil {
		t.Errorf("unexpected error: %v", err)
	}
}

func TestParseRFC3597InvalidLength(t *testing.T) {
	// We need to space separate the 00s otherwise it will exceed the maximum token size
	// of the zone lexer.
	_, err := NewRR("example. 3600 CLASS1 TYPE1 \\# 65536 " + strings.Repeat("00 ", 65536))
	if err == nil {
		t.Error("should not have parsed excessively long RFC3579 record")
	}
}

func TestParseKnownRRAsRFC3597(t *testing.T) {
	t.Run("with RDATA", func(t *testing.T) {
		// This was found by oss-fuzz.
		_, err := NewRR("example. 3600 tYpe44 \\# 03 75  0100")
		if err != nil {
			t.Errorf("failed to parse RFC3579 format: %v", err)
		}

rr, err := NewRR("example. 3600 CLASS1 TYPE1 \\# 4 7f000001")
		if err != nil {
			t.Fatalf("failed to parse RFC3579 format: %v", err)
		}

if rr.Header().Rrtype != TypeA {
			t.Errorf("expected TypeA (1) Rrtype, but got %v", rr.Header().Rrtype)
		}

a, ok := rr.(*A)
		if !ok {
			t.Fatalf("expected *A RR, but got %T", rr)
		}

localhost := net.IPv4(127, 0, 0, 1)
		if !a.A.Equal(localhost) {
			t.Errorf("expected A with IP %v, but got %v", localhost, a.A)
		}
	})
	t.Run("without RDATA", func(t *testing.T) {
		rr, err := NewRR("example. 3600 CLASS1 TYPE1 \\# 0")
		if err != nil {
			t.Fatalf("failed to parse RFC3579 format: %v", err)
		}

if rr.Header().Rrtype != TypeA {
			t.Errorf("expected TypeA (1) Rrtype, but got %v", rr.Header().Rrtype)
		}

a, ok := rr.(*A)
		if !ok {
			t.Fatalf("expected *A RR, but got %T", rr)
		}

if len(a.A) != 0 {
			t.Errorf("expected A with empty IP, but got %v", a.A)
		}
	})
}

func BenchmarkNewRR(b *testing.B) {
	const name1 = "12345678901234567890123456789012345.12345678.123."
	const s = name1 + " 3600 IN MX 10 " + name1

for n := 0; n < b.N; n++ {
		_, err := NewRR(s)
		if err != nil {
			b.Fatal(err)
		}
	}
}

func BenchmarkReadRR(b *testing.B) {
	const name1 = "12345678901234567890123456789012345.12345678.123."
	const s = name1 + " 3600 IN MX 10 " + name1 + "\n"

for n := 0; n < b.N; n++ {
		r := struct{ io.Reader }{strings.NewReader(s)}
		// r is now only an io.Reader and won't benefit from the
		// io.ByteReader special-case in zlexer.Next.

_, err := ReadRR(r, "")
		if err != nil {
			b.Fatal(err)
		}
	}
}

const benchZone = `
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
`

func BenchmarkZoneParser(b *testing.B) {
	for n := 0; n < b.N; n++ {
		zp := NewZoneParser(strings.NewReader(benchZone), "example.org.", "")

for _, ok := zp.Next(); ok; _, ok = zp.Next() {
		}

if err := zp.Err(); err != nil {
			b.Fatal(err)
		}
	}
}

${this.title}

Code Editor : scan_test.go