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Diffstat (limited to 'pkg/tcpip/header/ndp_test.go')
-rw-r--r--pkg/tcpip/header/ndp_test.go1364
1 files changed, 1343 insertions, 21 deletions
diff --git a/pkg/tcpip/header/ndp_test.go b/pkg/tcpip/header/ndp_test.go
index 0aac14f43..dc4591253 100644
--- a/pkg/tcpip/header/ndp_test.go
+++ b/pkg/tcpip/header/ndp_test.go
@@ -16,9 +16,14 @@ package header
import (
"bytes"
+ "errors"
+ "fmt"
+ "io"
+ "regexp"
"testing"
"time"
+ "github.com/google/go-cmp/cmp"
"gvisor.dev/gvisor/pkg/tcpip"
)
@@ -36,18 +41,18 @@ func TestNDPNeighborSolicit(t *testing.T) {
ns := NDPNeighborSolicit(b)
addr := tcpip.Address("\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f\x10")
if got := ns.TargetAddress(); got != addr {
- t.Fatalf("got ns.TargetAddress = %s, want %s", got, addr)
+ t.Errorf("got ns.TargetAddress = %s, want %s", got, addr)
}
// Test updating the Target Address.
addr2 := tcpip.Address("\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f\x11")
ns.SetTargetAddress(addr2)
if got := ns.TargetAddress(); got != addr2 {
- t.Fatalf("got ns.TargetAddress = %s, want %s", got, addr2)
+ t.Errorf("got ns.TargetAddress = %s, want %s", got, addr2)
}
// Make sure the address got updated in the backing buffer.
if got := tcpip.Address(b[ndpNSTargetAddessOffset:][:IPv6AddressSize]); got != addr2 {
- t.Fatalf("got targetaddress buffer = %s, want %s", got, addr2)
+ t.Errorf("got targetaddress buffer = %s, want %s", got, addr2)
}
}
@@ -65,56 +70,56 @@ func TestNDPNeighborAdvert(t *testing.T) {
na := NDPNeighborAdvert(b)
addr := tcpip.Address("\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f\x10")
if got := na.TargetAddress(); got != addr {
- t.Fatalf("got TargetAddress = %s, want %s", got, addr)
+ t.Errorf("got TargetAddress = %s, want %s", got, addr)
}
// Test getting the Router Flag.
if got := na.RouterFlag(); !got {
- t.Fatalf("got RouterFlag = false, want = true")
+ t.Errorf("got RouterFlag = false, want = true")
}
// Test getting the Solicited Flag.
if got := na.SolicitedFlag(); got {
- t.Fatalf("got SolicitedFlag = true, want = false")
+ t.Errorf("got SolicitedFlag = true, want = false")
}
// Test getting the Override Flag.
if got := na.OverrideFlag(); !got {
- t.Fatalf("got OverrideFlag = false, want = true")
+ t.Errorf("got OverrideFlag = false, want = true")
}
// Test updating the Target Address.
addr2 := tcpip.Address("\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f\x11")
na.SetTargetAddress(addr2)
if got := na.TargetAddress(); got != addr2 {
- t.Fatalf("got TargetAddress = %s, want %s", got, addr2)
+ t.Errorf("got TargetAddress = %s, want %s", got, addr2)
}
// Make sure the address got updated in the backing buffer.
if got := tcpip.Address(b[ndpNATargetAddressOffset:][:IPv6AddressSize]); got != addr2 {
- t.Fatalf("got targetaddress buffer = %s, want %s", got, addr2)
+ t.Errorf("got targetaddress buffer = %s, want %s", got, addr2)
}
// Test updating the Router Flag.
na.SetRouterFlag(false)
if got := na.RouterFlag(); got {
- t.Fatalf("got RouterFlag = true, want = false")
+ t.Errorf("got RouterFlag = true, want = false")
}
// Test updating the Solicited Flag.
na.SetSolicitedFlag(true)
if got := na.SolicitedFlag(); !got {
- t.Fatalf("got SolicitedFlag = false, want = true")
+ t.Errorf("got SolicitedFlag = false, want = true")
}
// Test updating the Override Flag.
na.SetOverrideFlag(false)
if got := na.OverrideFlag(); got {
- t.Fatalf("got OverrideFlag = true, want = false")
+ t.Errorf("got OverrideFlag = true, want = false")
}
// Make sure flags got updated in the backing buffer.
if got := b[ndpNAFlagsOffset]; got != 64 {
- t.Fatalf("got flags byte = %d, want = 64")
+ t.Errorf("got flags byte = %d, want = 64", got)
}
}
@@ -128,27 +133,181 @@ func TestNDPRouterAdvert(t *testing.T) {
ra := NDPRouterAdvert(b)
if got := ra.CurrHopLimit(); got != 64 {
- t.Fatalf("got ra.CurrHopLimit = %d, want = 64", got)
+ t.Errorf("got ra.CurrHopLimit = %d, want = 64", got)
}
if got := ra.ManagedAddrConfFlag(); !got {
- t.Fatalf("got ManagedAddrConfFlag = false, want = true")
+ t.Errorf("got ManagedAddrConfFlag = false, want = true")
}
if got := ra.OtherConfFlag(); got {
- t.Fatalf("got OtherConfFlag = true, want = false")
+ t.Errorf("got OtherConfFlag = true, want = false")
}
if got, want := ra.RouterLifetime(), time.Second*258; got != want {
- t.Fatalf("got ra.RouterLifetime = %d, want = %d", got, want)
+ t.Errorf("got ra.RouterLifetime = %d, want = %d", got, want)
}
if got, want := ra.ReachableTime(), time.Millisecond*50595078; got != want {
- t.Fatalf("got ra.ReachableTime = %d, want = %d", got, want)
+ t.Errorf("got ra.ReachableTime = %d, want = %d", got, want)
}
if got, want := ra.RetransTimer(), time.Millisecond*117967114; got != want {
- t.Fatalf("got ra.RetransTimer = %d, want = %d", got, want)
+ t.Errorf("got ra.RetransTimer = %d, want = %d", got, want)
+ }
+}
+
+// TestNDPSourceLinkLayerAddressOptionEthernetAddress tests getting the
+// Ethernet address from an NDPSourceLinkLayerAddressOption.
+func TestNDPSourceLinkLayerAddressOptionEthernetAddress(t *testing.T) {
+ tests := []struct {
+ name string
+ buf []byte
+ expected tcpip.LinkAddress
+ }{
+ {
+ "ValidMAC",
+ []byte{1, 2, 3, 4, 5, 6},
+ tcpip.LinkAddress("\x01\x02\x03\x04\x05\x06"),
+ },
+ {
+ "SLLBodyTooShort",
+ []byte{1, 2, 3, 4, 5},
+ tcpip.LinkAddress([]byte(nil)),
+ },
+ {
+ "SLLBodyLargerThanNeeded",
+ []byte{1, 2, 3, 4, 5, 6, 7, 8},
+ tcpip.LinkAddress("\x01\x02\x03\x04\x05\x06"),
+ },
+ }
+
+ for _, test := range tests {
+ t.Run(test.name, func(t *testing.T) {
+ sll := NDPSourceLinkLayerAddressOption(test.buf)
+ if got := sll.EthernetAddress(); got != test.expected {
+ t.Errorf("got sll.EthernetAddress = %s, want = %s", got, test.expected)
+ }
+ })
+ }
+}
+
+// TestNDPSourceLinkLayerAddressOptionSerialize tests serializing a
+// NDPSourceLinkLayerAddressOption.
+func TestNDPSourceLinkLayerAddressOptionSerialize(t *testing.T) {
+ tests := []struct {
+ name string
+ buf []byte
+ expectedBuf []byte
+ addr tcpip.LinkAddress
+ }{
+ {
+ "Ethernet",
+ make([]byte, 8),
+ []byte{1, 1, 1, 2, 3, 4, 5, 6},
+ "\x01\x02\x03\x04\x05\x06",
+ },
+ {
+ "Padding",
+ []byte{1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1},
+ []byte{1, 2, 1, 2, 3, 4, 5, 6, 7, 8, 0, 0, 0, 0, 0, 0},
+ "\x01\x02\x03\x04\x05\x06\x07\x08",
+ },
+ {
+ "Empty",
+ nil,
+ nil,
+ "",
+ },
+ }
+
+ for _, test := range tests {
+ t.Run(test.name, func(t *testing.T) {
+ opts := NDPOptions(test.buf)
+ serializer := NDPOptionsSerializer{
+ NDPSourceLinkLayerAddressOption(test.addr),
+ }
+ if got, want := int(serializer.Length()), len(test.expectedBuf); got != want {
+ t.Fatalf("got Length = %d, want = %d", got, want)
+ }
+ opts.Serialize(serializer)
+ if !bytes.Equal(test.buf, test.expectedBuf) {
+ t.Fatalf("got b = %d, want = %d", test.buf, test.expectedBuf)
+ }
+
+ it, err := opts.Iter(true)
+ if err != nil {
+ t.Fatalf("got Iter = (_, %s), want = (_, nil)", err)
+ }
+
+ if len(test.expectedBuf) > 0 {
+ next, done, err := it.Next()
+ if err != nil {
+ t.Fatalf("got Next = (_, _, %s), want = (_, _, nil)", err)
+ }
+ if done {
+ t.Fatal("got Next = (_, true, _), want = (_, false, _)")
+ }
+ if got := next.Type(); got != NDPSourceLinkLayerAddressOptionType {
+ t.Fatalf("got Type = %d, want = %d", got, NDPSourceLinkLayerAddressOptionType)
+ }
+ sll := next.(NDPSourceLinkLayerAddressOption)
+ if got, want := []byte(sll), test.expectedBuf[2:]; !bytes.Equal(got, want) {
+ t.Fatalf("got Next = (%x, _, _), want = (%x, _, _)", got, want)
+ }
+
+ if got, want := sll.EthernetAddress(), tcpip.LinkAddress(test.expectedBuf[2:][:EthernetAddressSize]); got != want {
+ t.Errorf("got sll.EthernetAddress = %s, want = %s", got, want)
+ }
+ }
+
+ // Iterator should not return anything else.
+ next, done, err := it.Next()
+ if err != nil {
+ t.Errorf("got Next = (_, _, %s), want = (_, _, nil)", err)
+ }
+ if !done {
+ t.Error("got Next = (_, false, _), want = (_, true, _)")
+ }
+ if next != nil {
+ t.Errorf("got Next = (%x, _, _), want = (nil, _, _)", next)
+ }
+ })
+ }
+}
+
+// TestNDPTargetLinkLayerAddressOptionEthernetAddress tests getting the
+// Ethernet address from an NDPTargetLinkLayerAddressOption.
+func TestNDPTargetLinkLayerAddressOptionEthernetAddress(t *testing.T) {
+ tests := []struct {
+ name string
+ buf []byte
+ expected tcpip.LinkAddress
+ }{
+ {
+ "ValidMAC",
+ []byte{1, 2, 3, 4, 5, 6},
+ tcpip.LinkAddress("\x01\x02\x03\x04\x05\x06"),
+ },
+ {
+ "TLLBodyTooShort",
+ []byte{1, 2, 3, 4, 5},
+ tcpip.LinkAddress([]byte(nil)),
+ },
+ {
+ "TLLBodyLargerThanNeeded",
+ []byte{1, 2, 3, 4, 5, 6, 7, 8},
+ tcpip.LinkAddress("\x01\x02\x03\x04\x05\x06"),
+ },
+ }
+
+ for _, test := range tests {
+ t.Run(test.name, func(t *testing.T) {
+ tll := NDPTargetLinkLayerAddressOption(test.buf)
+ if got := tll.EthernetAddress(); got != test.expected {
+ t.Errorf("got tll.EthernetAddress = %s, want = %s", got, test.expected)
+ }
+ })
}
}
@@ -175,8 +334,8 @@ func TestNDPTargetLinkLayerAddressOptionSerialize(t *testing.T) {
},
{
"Empty",
- []byte{},
- []byte{},
+ nil,
+ nil,
"",
},
}
@@ -194,6 +353,1169 @@ func TestNDPTargetLinkLayerAddressOptionSerialize(t *testing.T) {
if !bytes.Equal(test.buf, test.expectedBuf) {
t.Fatalf("got b = %d, want = %d", test.buf, test.expectedBuf)
}
+
+ it, err := opts.Iter(true)
+ if err != nil {
+ t.Fatalf("got Iter = (_, %s), want = (_, nil)", err)
+ }
+
+ if len(test.expectedBuf) > 0 {
+ next, done, err := it.Next()
+ if err != nil {
+ t.Fatalf("got Next = (_, _, %s), want = (_, _, nil)", err)
+ }
+ if done {
+ t.Fatal("got Next = (_, true, _), want = (_, false, _)")
+ }
+ if got := next.Type(); got != NDPTargetLinkLayerAddressOptionType {
+ t.Fatalf("got Type = %d, want = %d", got, NDPTargetLinkLayerAddressOptionType)
+ }
+ tll := next.(NDPTargetLinkLayerAddressOption)
+ if got, want := []byte(tll), test.expectedBuf[2:]; !bytes.Equal(got, want) {
+ t.Fatalf("got Next = (%x, _, _), want = (%x, _, _)", got, want)
+ }
+
+ if got, want := tll.EthernetAddress(), tcpip.LinkAddress(test.expectedBuf[2:][:EthernetAddressSize]); got != want {
+ t.Errorf("got tll.EthernetAddress = %s, want = %s", got, want)
+ }
+ }
+
+ // Iterator should not return anything else.
+ next, done, err := it.Next()
+ if err != nil {
+ t.Errorf("got Next = (_, _, %s), want = (_, _, nil)", err)
+ }
+ if !done {
+ t.Error("got Next = (_, false, _), want = (_, true, _)")
+ }
+ if next != nil {
+ t.Errorf("got Next = (%x, _, _), want = (nil, _, _)", next)
+ }
+ })
+ }
+}
+
+// TestNDPPrefixInformationOption tests the field getters and serialization of a
+// NDPPrefixInformation.
+func TestNDPPrefixInformationOption(t *testing.T) {
+ b := []byte{
+ 43, 127,
+ 1, 2, 3, 4,
+ 5, 6, 7, 8,
+ 5, 5, 5, 5,
+ 9, 10, 11, 12,
+ 13, 14, 15, 16,
+ 17, 18, 19, 20,
+ 21, 22, 23, 24,
+ }
+
+ targetBuf := []byte{1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}
+ opts := NDPOptions(targetBuf)
+ serializer := NDPOptionsSerializer{
+ NDPPrefixInformation(b),
+ }
+ opts.Serialize(serializer)
+ expectedBuf := []byte{
+ 3, 4, 43, 64,
+ 1, 2, 3, 4,
+ 5, 6, 7, 8,
+ 0, 0, 0, 0,
+ 9, 10, 11, 12,
+ 13, 14, 15, 16,
+ 17, 18, 19, 20,
+ 21, 22, 23, 24,
+ }
+ if !bytes.Equal(targetBuf, expectedBuf) {
+ t.Fatalf("got targetBuf = %x, want = %x", targetBuf, expectedBuf)
+ }
+
+ it, err := opts.Iter(true)
+ if err != nil {
+ t.Fatalf("got Iter = (_, %s), want = (_, nil)", err)
+ }
+
+ next, done, err := it.Next()
+ if err != nil {
+ t.Fatalf("got Next = (_, _, %s), want = (_, _, nil)", err)
+ }
+ if done {
+ t.Fatal("got Next = (_, true, _), want = (_, false, _)")
+ }
+ if got := next.Type(); got != NDPPrefixInformationType {
+ t.Errorf("got Type = %d, want = %d", got, NDPPrefixInformationType)
+ }
+
+ pi := next.(NDPPrefixInformation)
+
+ if got := pi.Type(); got != 3 {
+ t.Errorf("got Type = %d, want = 3", got)
+ }
+
+ if got := pi.Length(); got != 30 {
+ t.Errorf("got Length = %d, want = 30", got)
+ }
+
+ if got := pi.PrefixLength(); got != 43 {
+ t.Errorf("got PrefixLength = %d, want = 43", got)
+ }
+
+ if pi.OnLinkFlag() {
+ t.Error("got OnLinkFlag = true, want = false")
+ }
+
+ if !pi.AutonomousAddressConfigurationFlag() {
+ t.Error("got AutonomousAddressConfigurationFlag = false, want = true")
+ }
+
+ if got, want := pi.ValidLifetime(), 16909060*time.Second; got != want {
+ t.Errorf("got ValidLifetime = %d, want = %d", got, want)
+ }
+
+ if got, want := pi.PreferredLifetime(), 84281096*time.Second; got != want {
+ t.Errorf("got PreferredLifetime = %d, want = %d", got, want)
+ }
+
+ if got, want := pi.Prefix(), tcpip.Address("\x09\x0a\x0b\x0c\x0d\x0e\x0f\x10\x11\x12\x13\x14\x15\x16\x17\x18"); got != want {
+ t.Errorf("got Prefix = %s, want = %s", got, want)
+ }
+
+ // Iterator should not return anything else.
+ next, done, err = it.Next()
+ if err != nil {
+ t.Errorf("got Next = (_, _, %s), want = (_, _, nil)", err)
+ }
+ if !done {
+ t.Error("got Next = (_, false, _), want = (_, true, _)")
+ }
+ if next != nil {
+ t.Errorf("got Next = (%x, _, _), want = (nil, _, _)", next)
+ }
+}
+
+func TestNDPRecursiveDNSServerOptionSerialize(t *testing.T) {
+ b := []byte{
+ 9, 8,
+ 1, 2, 4, 8,
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
+ }
+ targetBuf := []byte{1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}
+ expected := []byte{
+ 25, 3, 0, 0,
+ 1, 2, 4, 8,
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
+ }
+ opts := NDPOptions(targetBuf)
+ serializer := NDPOptionsSerializer{
+ NDPRecursiveDNSServer(b),
+ }
+ if got, want := opts.Serialize(serializer), len(expected); got != want {
+ t.Errorf("got Serialize = %d, want = %d", got, want)
+ }
+ if !bytes.Equal(targetBuf, expected) {
+ t.Fatalf("got targetBuf = %x, want = %x", targetBuf, expected)
+ }
+
+ it, err := opts.Iter(true)
+ if err != nil {
+ t.Fatalf("got Iter = (_, %s), want = (_, nil)", err)
+ }
+
+ next, done, err := it.Next()
+ if err != nil {
+ t.Fatalf("got Next = (_, _, %s), want = (_, _, nil)", err)
+ }
+ if done {
+ t.Fatal("got Next = (_, true, _), want = (_, false, _)")
+ }
+ if got := next.Type(); got != NDPRecursiveDNSServerOptionType {
+ t.Errorf("got Type = %d, want = %d", got, NDPRecursiveDNSServerOptionType)
+ }
+
+ opt, ok := next.(NDPRecursiveDNSServer)
+ if !ok {
+ t.Fatalf("next (type = %T) cannot be casted to an NDPRecursiveDNSServer", next)
+ }
+ if got := opt.Type(); got != 25 {
+ t.Errorf("got Type = %d, want = 31", got)
+ }
+ if got := opt.Length(); got != 22 {
+ t.Errorf("got Length = %d, want = 22", got)
+ }
+ if got, want := opt.Lifetime(), 16909320*time.Second; got != want {
+ t.Errorf("got Lifetime = %s, want = %s", got, want)
+ }
+ want := []tcpip.Address{
+ "\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f",
+ }
+ addrs, err := opt.Addresses()
+ if err != nil {
+ t.Errorf("opt.Addresses() = %s", err)
+ }
+ if diff := cmp.Diff(addrs, want); diff != "" {
+ t.Errorf("mismatched addresses (-want +got):\n%s", diff)
+ }
+
+ // Iterator should not return anything else.
+ next, done, err = it.Next()
+ if err != nil {
+ t.Errorf("got Next = (_, _, %s), want = (_, _, nil)", err)
+ }
+ if !done {
+ t.Error("got Next = (_, false, _), want = (_, true, _)")
+ }
+ if next != nil {
+ t.Errorf("got Next = (%x, _, _), want = (nil, _, _)", next)
+ }
+}
+
+func TestNDPRecursiveDNSServerOption(t *testing.T) {
+ tests := []struct {
+ name string
+ buf []byte
+ lifetime time.Duration
+ addrs []tcpip.Address
+ }{
+ {
+ "Valid1Addr",
+ []byte{
+ 25, 3, 0, 0,
+ 0, 0, 0, 0,
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
+ },
+ 0,
+ []tcpip.Address{
+ "\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f",
+ },
+ },
+ {
+ "Valid2Addr",
+ []byte{
+ 25, 5, 0, 0,
+ 0, 0, 0, 0,
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
+ 17, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16,
+ },
+ 0,
+ []tcpip.Address{
+ "\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f",
+ "\x11\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x10",
+ },
+ },
+ {
+ "Valid3Addr",
+ []byte{
+ 25, 7, 0, 0,
+ 0, 0, 0, 0,
+ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
+ 17, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16,
+ 17, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 17,
+ },
+ 0,
+ []tcpip.Address{
+ "\x00\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x0f",
+ "\x11\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x10",
+ "\x11\x01\x02\x03\x04\x05\x06\x07\x08\x09\x0a\x0b\x0c\x0d\x0e\x11",
+ },
+ },
+ }
+
+ for _, test := range tests {
+ t.Run(test.name, func(t *testing.T) {
+ opts := NDPOptions(test.buf)
+ it, err := opts.Iter(true)
+ if err != nil {
+ t.Fatalf("got Iter = (_, %s), want = (_, nil)", err)
+ }
+
+ // Iterator should get our option.
+ next, done, err := it.Next()
+ if err != nil {
+ t.Fatalf("got Next = (_, _, %s), want = (_, _, nil)", err)
+ }
+ if done {
+ t.Fatal("got Next = (_, true, _), want = (_, false, _)")
+ }
+ if got := next.Type(); got != NDPRecursiveDNSServerOptionType {
+ t.Fatalf("got Type = %d, want = %d", got, NDPRecursiveDNSServerOptionType)
+ }
+
+ opt, ok := next.(NDPRecursiveDNSServer)
+ if !ok {
+ t.Fatalf("next (type = %T) cannot be casted to an NDPRecursiveDNSServer", next)
+ }
+ if got := opt.Lifetime(); got != test.lifetime {
+ t.Errorf("got Lifetime = %d, want = %d", got, test.lifetime)
+ }
+ addrs, err := opt.Addresses()
+ if err != nil {
+ t.Errorf("opt.Addresses() = %s", err)
+ }
+ if diff := cmp.Diff(addrs, test.addrs); diff != "" {
+ t.Errorf("mismatched addresses (-want +got):\n%s", diff)
+ }
+
+ // Iterator should not return anything else.
+ next, done, err = it.Next()
+ if err != nil {
+ t.Errorf("got Next = (_, _, %s), want = (_, _, nil)", err)
+ }
+ if !done {
+ t.Error("got Next = (_, false, _), want = (_, true, _)")
+ }
+ if next != nil {
+ t.Errorf("got Next = (%x, _, _), want = (nil, _, _)", next)
+ }
})
}
}
+
+// TestNDPDNSSearchListOption tests the getters of NDPDNSSearchList.
+func TestNDPDNSSearchListOption(t *testing.T) {
+ tests := []struct {
+ name string
+ buf []byte
+ lifetime time.Duration
+ domainNames []string
+ err error
+ }{
+ {
+ name: "Valid1Label",
+ buf: []byte{
+ 0, 0,
+ 0, 0, 0, 1,
+ 3, 'a', 'b', 'c',
+ 0,
+ 0, 0, 0,
+ },
+ lifetime: time.Second,
+ domainNames: []string{
+ "abc",
+ },
+ err: nil,
+ },
+ {
+ name: "Valid2Label",
+ buf: []byte{
+ 0, 0,
+ 0, 0, 0, 5,
+ 3, 'a', 'b', 'c',
+ 4, 'a', 'b', 'c', 'd',
+ 0,
+ 0, 0, 0, 0, 0, 0,
+ },
+ lifetime: 5 * time.Second,
+ domainNames: []string{
+ "abc.abcd",
+ },
+ err: nil,
+ },
+ {
+ name: "Valid3Label",
+ buf: []byte{
+ 0, 0,
+ 1, 0, 0, 0,
+ 3, 'a', 'b', 'c',
+ 4, 'a', 'b', 'c', 'd',
+ 1, 'e',
+ 0,
+ 0, 0, 0, 0,
+ },
+ lifetime: 16777216 * time.Second,
+ domainNames: []string{
+ "abc.abcd.e",
+ },
+ err: nil,
+ },
+ {
+ name: "Valid2Domains",
+ buf: []byte{
+ 0, 0,
+ 1, 2, 3, 4,
+ 3, 'a', 'b', 'c',
+ 0,
+ 2, 'd', 'e',
+ 3, 'x', 'y', 'z',
+ 0,
+ 0, 0, 0,
+ },
+ lifetime: 16909060 * time.Second,
+ domainNames: []string{
+ "abc",
+ "de.xyz",
+ },
+ err: nil,
+ },
+ {
+ name: "Valid3DomainsMixedCase",
+ buf: []byte{
+ 0, 0,
+ 0, 0, 0, 0,
+ 3, 'a', 'B', 'c',
+ 0,
+ 2, 'd', 'E',
+ 3, 'X', 'y', 'z',
+ 0,
+ 1, 'J',
+ 0,
+ },
+ lifetime: 0,
+ domainNames: []string{
+ "abc",
+ "de.xyz",
+ "j",
+ },
+ err: nil,
+ },
+ {
+ name: "ValidDomainAfterNULL",
+ buf: []byte{
+ 0, 0,
+ 0, 0, 0, 0,
+ 3, 'a', 'B', 'c',
+ 0, 0, 0, 0,
+ 2, 'd', 'E',
+ 3, 'X', 'y', 'z',
+ 0,
+ },
+ lifetime: 0,
+ domainNames: []string{
+ "abc",
+ "de.xyz",
+ },
+ err: nil,
+ },
+ {
+ name: "Valid0Domains",
+ buf: []byte{
+ 0, 0,
+ 0, 0, 0, 0,
+ 0,
+ 0, 0, 0, 0, 0, 0, 0,
+ },
+ lifetime: 0,
+ domainNames: nil,
+ err: nil,
+ },
+ {
+ name: "NoTrailingNull",
+ buf: []byte{
+ 0, 0,
+ 0, 0, 0, 0,
+ 7, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
+ },
+ lifetime: 0,
+ domainNames: nil,
+ err: io.ErrUnexpectedEOF,
+ },
+ {
+ name: "IncorrectLength",
+ buf: []byte{
+ 0, 0,
+ 0, 0, 0, 0,
+ 8, 'a', 'b', 'c', 'd', 'e', 'f', 'g',
+ },
+ lifetime: 0,
+ domainNames: nil,
+ err: io.ErrUnexpectedEOF,
+ },
+ {
+ name: "IncorrectLengthWithNULL",
+ buf: []byte{
+ 0, 0,
+ 0, 0, 0, 0,
+ 7, 'a', 'b', 'c', 'd', 'e', 'f',
+ 0,
+ },
+ lifetime: 0,
+ domainNames: nil,
+ err: ErrNDPOptMalformedBody,
+ },
+ {
+ name: "LabelOfLength63",
+ buf: []byte{
+ 0, 0,
+ 0, 0, 0, 0,
+ 63, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k',
+ 0,
+ },
+ lifetime: 0,
+ domainNames: []string{
+ "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijk",
+ },
+ err: nil,
+ },
+ {
+ name: "LabelOfLength64",
+ buf: []byte{
+ 0, 0,
+ 0, 0, 0, 0,
+ 64, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l',
+ 0,
+ },
+ lifetime: 0,
+ domainNames: nil,
+ err: ErrNDPOptMalformedBody,
+ },
+ {
+ name: "DomainNameOfLength255",
+ buf: []byte{
+ 0, 0,
+ 0, 0, 0, 0,
+ 63, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k',
+ 63, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k',
+ 63, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k',
+ 62, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j',
+ 0,
+ },
+ lifetime: 0,
+ domainNames: []string{
+ "abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijk.abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijk.abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijk.abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghij",
+ },
+ err: nil,
+ },
+ {
+ name: "DomainNameOfLength256",
+ buf: []byte{
+ 0, 0,
+ 0, 0, 0, 0,
+ 63, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k',
+ 63, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k',
+ 63, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k',
+ 63, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k',
+ 0,
+ },
+ lifetime: 0,
+ domainNames: nil,
+ err: ErrNDPOptMalformedBody,
+ },
+ {
+ name: "StartingDigitForLabel",
+ buf: []byte{
+ 0, 0,
+ 0, 0, 0, 1,
+ 3, '9', 'b', 'c',
+ 0,
+ 0, 0, 0,
+ },
+ lifetime: time.Second,
+ domainNames: nil,
+ err: ErrNDPOptMalformedBody,
+ },
+ {
+ name: "StartingHyphenForLabel",
+ buf: []byte{
+ 0, 0,
+ 0, 0, 0, 1,
+ 3, '-', 'b', 'c',
+ 0,
+ 0, 0, 0,
+ },
+ lifetime: time.Second,
+ domainNames: nil,
+ err: ErrNDPOptMalformedBody,
+ },
+ {
+ name: "EndingHyphenForLabel",
+ buf: []byte{
+ 0, 0,
+ 0, 0, 0, 1,
+ 3, 'a', 'b', '-',
+ 0,
+ 0, 0, 0,
+ },
+ lifetime: time.Second,
+ domainNames: nil,
+ err: ErrNDPOptMalformedBody,
+ },
+ {
+ name: "EndingDigitForLabel",
+ buf: []byte{
+ 0, 0,
+ 0, 0, 0, 1,
+ 3, 'a', 'b', '9',
+ 0,
+ 0, 0, 0,
+ },
+ lifetime: time.Second,
+ domainNames: []string{
+ "ab9",
+ },
+ err: nil,
+ },
+ }
+
+ for _, test := range tests {
+ t.Run(test.name, func(t *testing.T) {
+ opt := NDPDNSSearchList(test.buf)
+
+ if got := opt.Lifetime(); got != test.lifetime {
+ t.Errorf("got Lifetime = %d, want = %d", got, test.lifetime)
+ }
+ domainNames, err := opt.DomainNames()
+ if !errors.Is(err, test.err) {
+ t.Errorf("opt.DomainNames() = %s", err)
+ }
+ if diff := cmp.Diff(domainNames, test.domainNames); diff != "" {
+ t.Errorf("mismatched domain names (-want +got):\n%s", diff)
+ }
+ })
+ }
+}
+
+func TestNDPSearchListOptionDomainNameLabelInvalidSymbols(t *testing.T) {
+ for r := rune(0); r <= 255; r++ {
+ t.Run(fmt.Sprintf("RuneVal=%d", r), func(t *testing.T) {
+ buf := []byte{
+ 0, 0,
+ 0, 0, 0, 0,
+ 3, 'a', 0 /* will be replaced */, 'c',
+ 0,
+ 0, 0, 0,
+ }
+ buf[8] = uint8(r)
+ opt := NDPDNSSearchList(buf)
+
+ // As per RFC 1035 section 2.3.1, the label must only include ASCII
+ // letters, digits and hyphens (a-z, A-Z, 0-9, -).
+ var expectedErr error
+ re := regexp.MustCompile(`[a-zA-Z0-9-]`)
+ if !re.Match([]byte{byte(r)}) {
+ expectedErr = ErrNDPOptMalformedBody
+ }
+
+ if domainNames, err := opt.DomainNames(); !errors.Is(err, expectedErr) {
+ t.Errorf("got opt.DomainNames() = (%s, %v), want = (_, %v)", domainNames, err, ErrNDPOptMalformedBody)
+ }
+ })
+ }
+}
+
+func TestNDPDNSSearchListOptionSerialize(t *testing.T) {
+ b := []byte{
+ 9, 8,
+ 1, 0, 0, 0,
+ 3, 'a', 'b', 'c',
+ 4, 'a', 'b', 'c', 'd',
+ 1, 'e',
+ 0,
+ }
+ targetBuf := []byte{1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}
+ expected := []byte{
+ 31, 3, 0, 0,
+ 1, 0, 0, 0,
+ 3, 'a', 'b', 'c',
+ 4, 'a', 'b', 'c', 'd',
+ 1, 'e',
+ 0,
+ 0, 0, 0, 0,
+ }
+ opts := NDPOptions(targetBuf)
+ serializer := NDPOptionsSerializer{
+ NDPDNSSearchList(b),
+ }
+ if got, want := opts.Serialize(serializer), len(expected); got != want {
+ t.Errorf("got Serialize = %d, want = %d", got, want)
+ }
+ if !bytes.Equal(targetBuf, expected) {
+ t.Fatalf("got targetBuf = %x, want = %x", targetBuf, expected)
+ }
+
+ it, err := opts.Iter(true)
+ if err != nil {
+ t.Fatalf("got Iter = (_, %s), want = (_, nil)", err)
+ }
+
+ next, done, err := it.Next()
+ if err != nil {
+ t.Fatalf("got Next = (_, _, %s), want = (_, _, nil)", err)
+ }
+ if done {
+ t.Fatal("got Next = (_, true, _), want = (_, false, _)")
+ }
+ if got := next.Type(); got != NDPDNSSearchListOptionType {
+ t.Errorf("got Type = %d, want = %d", got, NDPDNSSearchListOptionType)
+ }
+
+ opt, ok := next.(NDPDNSSearchList)
+ if !ok {
+ t.Fatalf("next (type = %T) cannot be casted to an NDPDNSSearchList", next)
+ }
+ if got := opt.Type(); got != 31 {
+ t.Errorf("got Type = %d, want = 31", got)
+ }
+ if got := opt.Length(); got != 22 {
+ t.Errorf("got Length = %d, want = 22", got)
+ }
+ if got, want := opt.Lifetime(), 16777216*time.Second; got != want {
+ t.Errorf("got Lifetime = %s, want = %s", got, want)
+ }
+ domainNames, err := opt.DomainNames()
+ if err != nil {
+ t.Errorf("opt.DomainNames() = %s", err)
+ }
+ if diff := cmp.Diff(domainNames, []string{"abc.abcd.e"}); diff != "" {
+ t.Errorf("domain names mismatch (-want +got):\n%s", diff)
+ }
+
+ // Iterator should not return anything else.
+ next, done, err = it.Next()
+ if err != nil {
+ t.Errorf("got Next = (_, _, %s), want = (_, _, nil)", err)
+ }
+ if !done {
+ t.Error("got Next = (_, false, _), want = (_, true, _)")
+ }
+ if next != nil {
+ t.Errorf("got Next = (%x, _, _), want = (nil, _, _)", next)
+ }
+}
+
+// TestNDPOptionsIterCheck tests that Iter will return false if the NDPOptions
+// the iterator was returned for is malformed.
+func TestNDPOptionsIterCheck(t *testing.T) {
+ tests := []struct {
+ name string
+ buf []byte
+ expectedErr error
+ }{
+ {
+ name: "ZeroLengthField",
+ buf: []byte{0, 0, 0, 0, 0, 0, 0, 0},
+ expectedErr: ErrNDPOptMalformedHeader,
+ },
+ {
+ name: "ValidSourceLinkLayerAddressOption",
+ buf: []byte{1, 1, 1, 2, 3, 4, 5, 6},
+ expectedErr: nil,
+ },
+ {
+ name: "TooSmallSourceLinkLayerAddressOption",
+ buf: []byte{1, 1, 1, 2, 3, 4, 5},
+ expectedErr: io.ErrUnexpectedEOF,
+ },
+ {
+ name: "ValidTargetLinkLayerAddressOption",
+ buf: []byte{2, 1, 1, 2, 3, 4, 5, 6},
+ expectedErr: nil,
+ },
+ {
+ name: "TooSmallTargetLinkLayerAddressOption",
+ buf: []byte{2, 1, 1, 2, 3, 4, 5},
+ expectedErr: io.ErrUnexpectedEOF,
+ },
+ {
+ name: "ValidPrefixInformation",
+ buf: []byte{
+ 3, 4, 43, 64,
+ 1, 2, 3, 4,
+ 5, 6, 7, 8,
+ 0, 0, 0, 0,
+ 9, 10, 11, 12,
+ 13, 14, 15, 16,
+ 17, 18, 19, 20,
+ 21, 22, 23, 24,
+ },
+ expectedErr: nil,
+ },
+ {
+ name: "TooSmallPrefixInformation",
+ buf: []byte{
+ 3, 4, 43, 64,
+ 1, 2, 3, 4,
+ 5, 6, 7, 8,
+ 0, 0, 0, 0,
+ 9, 10, 11, 12,
+ 13, 14, 15, 16,
+ 17, 18, 19, 20,
+ 21, 22, 23,
+ },
+ expectedErr: io.ErrUnexpectedEOF,
+ },
+ {
+ name: "InvalidPrefixInformationLength",
+ buf: []byte{
+ 3, 3, 43, 64,
+ 1, 2, 3, 4,
+ 5, 6, 7, 8,
+ 0, 0, 0, 0,
+ 9, 10, 11, 12,
+ 13, 14, 15, 16,
+ },
+ expectedErr: ErrNDPOptMalformedBody,
+ },
+ {
+ name: "ValidSourceAndTargetLinkLayerAddressWithPrefixInformation",
+ buf: []byte{
+ // Source Link-Layer Address.
+ 1, 1, 1, 2, 3, 4, 5, 6,
+
+ // Target Link-Layer Address.
+ 2, 1, 7, 8, 9, 10, 11, 12,
+
+ // Prefix information.
+ 3, 4, 43, 64,
+ 1, 2, 3, 4,
+ 5, 6, 7, 8,
+ 0, 0, 0, 0,
+ 9, 10, 11, 12,
+ 13, 14, 15, 16,
+ 17, 18, 19, 20,
+ 21, 22, 23, 24,
+ },
+ expectedErr: nil,
+ },
+ {
+ name: "ValidSourceAndTargetLinkLayerAddressWithPrefixInformationWithUnrecognized",
+ buf: []byte{
+ // Source Link-Layer Address.
+ 1, 1, 1, 2, 3, 4, 5, 6,
+
+ // Target Link-Layer Address.
+ 2, 1, 7, 8, 9, 10, 11, 12,
+
+ // 255 is an unrecognized type. If 255 ends up
+ // being the type for some recognized type,
+ // update 255 to some other unrecognized value.
+ 255, 2, 1, 2, 3, 4, 5, 6, 1, 2, 3, 4, 5, 6, 7, 8,
+
+ // Prefix information.
+ 3, 4, 43, 64,
+ 1, 2, 3, 4,
+ 5, 6, 7, 8,
+ 0, 0, 0, 0,
+ 9, 10, 11, 12,
+ 13, 14, 15, 16,
+ 17, 18, 19, 20,
+ 21, 22, 23, 24,
+ },
+ expectedErr: nil,
+ },
+ {
+ name: "InvalidRecursiveDNSServerCutsOffAddress",
+ buf: []byte{
+ 25, 4, 0, 0,
+ 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1,
+ 0, 1, 2, 3, 4, 5, 6, 7,
+ },
+ expectedErr: ErrNDPOptMalformedBody,
+ },
+ {
+ name: "InvalidRecursiveDNSServerInvalidLengthField",
+ buf: []byte{
+ 25, 2, 0, 0,
+ 0, 0, 0, 0,
+ 0, 1, 2, 3, 4, 5, 6, 7, 8,
+ },
+ expectedErr: io.ErrUnexpectedEOF,
+ },
+ {
+ name: "RecursiveDNSServerTooSmall",
+ buf: []byte{
+ 25, 1, 0, 0,
+ 0, 0, 0,
+ },
+ expectedErr: io.ErrUnexpectedEOF,
+ },
+ {
+ name: "RecursiveDNSServerMulticast",
+ buf: []byte{
+ 25, 3, 0, 0,
+ 0, 0, 0, 0,
+ 255, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1,
+ },
+ expectedErr: ErrNDPOptMalformedBody,
+ },
+ {
+ name: "RecursiveDNSServerUnspecified",
+ buf: []byte{
+ 25, 3, 0, 0,
+ 0, 0, 0, 0,
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+ },
+ expectedErr: ErrNDPOptMalformedBody,
+ },
+ {
+ name: "DNSSearchListLargeCompliantRFC1035",
+ buf: []byte{
+ 31, 33, 0, 0,
+ 0, 0, 0, 0,
+ 63, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k',
+ 63, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k',
+ 63, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k',
+ 62, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j',
+ 0,
+ },
+ expectedErr: nil,
+ },
+ {
+ name: "DNSSearchListNonCompliantRFC1035",
+ buf: []byte{
+ 31, 33, 0, 0,
+ 0, 0, 0, 0,
+ 63, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k',
+ 63, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k',
+ 63, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k',
+ 63, 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q',
+ 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z',
+ 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h',
+ 'i', 'j', 'k',
+ 0,
+ 0, 0, 0, 0, 0, 0, 0, 0,
+ },
+ expectedErr: ErrNDPOptMalformedBody,
+ },
+ {
+ name: "DNSSearchListValidSmall",
+ buf: []byte{
+ 31, 2, 0, 0,
+ 0, 0, 0, 0,
+ 6, 'a', 'b', 'c', 'd', 'e', 'f',
+ 0,
+ },
+ expectedErr: nil,
+ },
+ {
+ name: "DNSSearchListTooSmall",
+ buf: []byte{
+ 31, 1, 0, 0,
+ 0, 0, 0,
+ },
+ expectedErr: io.ErrUnexpectedEOF,
+ },
+ }
+
+ for _, test := range tests {
+ t.Run(test.name, func(t *testing.T) {
+ opts := NDPOptions(test.buf)
+
+ if _, err := opts.Iter(true); !errors.Is(err, test.expectedErr) {
+ t.Fatalf("got Iter(true) = (_, %v), want = (_, %v)", err, test.expectedErr)
+ }
+
+ // test.buf may be malformed but we chose not to check
+ // the iterator so it must return true.
+ if _, err := opts.Iter(false); err != nil {
+ t.Fatalf("got Iter(false) = (_, %s), want = (_, nil)", err)
+ }
+ })
+ }
+}
+
+// TestNDPOptionsIter tests that we can iterator over a valid NDPOptions. Note,
+// this test does not actually check any of the option's getters, it simply
+// checks the option Type and Body. We have other tests that tests the option
+// field gettings given an option body and don't need to duplicate those tests
+// here.
+func TestNDPOptionsIter(t *testing.T) {
+ buf := []byte{
+ // Source Link-Layer Address.
+ 1, 1, 1, 2, 3, 4, 5, 6,
+
+ // Target Link-Layer Address.
+ 2, 1, 7, 8, 9, 10, 11, 12,
+
+ // 255 is an unrecognized type. If 255 ends up being the type
+ // for some recognized type, update 255 to some other
+ // unrecognized value. Note, this option should be skipped when
+ // iterating.
+ 255, 2, 1, 2, 3, 4, 5, 6, 1, 2, 3, 4, 5, 6, 7, 8,
+
+ // Prefix information.
+ 3, 4, 43, 64,
+ 1, 2, 3, 4,
+ 5, 6, 7, 8,
+ 0, 0, 0, 0,
+ 9, 10, 11, 12,
+ 13, 14, 15, 16,
+ 17, 18, 19, 20,
+ 21, 22, 23, 24,
+ }
+
+ opts := NDPOptions(buf)
+ it, err := opts.Iter(true)
+ if err != nil {
+ t.Fatalf("got Iter = (_, %s), want = (_, nil)", err)
+ }
+
+ // Test the first (Source Link-Layer) option.
+ next, done, err := it.Next()
+ if err != nil {
+ t.Fatalf("got Next = (_, _, %s), want = (_, _, nil)", err)
+ }
+ if done {
+ t.Fatal("got Next = (_, true, _), want = (_, false, _)")
+ }
+ if got, want := []byte(next.(NDPSourceLinkLayerAddressOption)), buf[2:][:6]; !bytes.Equal(got, want) {
+ t.Errorf("got Next = (%x, _, _), want = (%x, _, _)", got, want)
+ }
+ if got := next.Type(); got != NDPSourceLinkLayerAddressOptionType {
+ t.Errorf("got Type = %d, want = %d", got, NDPSourceLinkLayerAddressOptionType)
+ }
+
+ // Test the next (Target Link-Layer) option.
+ next, done, err = it.Next()
+ if err != nil {
+ t.Fatalf("got Next = (_, _, %s), want = (_, _, nil)", err)
+ }
+ if done {
+ t.Fatal("got Next = (_, true, _), want = (_, false, _)")
+ }
+ if got, want := []byte(next.(NDPTargetLinkLayerAddressOption)), buf[10:][:6]; !bytes.Equal(got, want) {
+ t.Errorf("got Next = (%x, _, _), want = (%x, _, _)", got, want)
+ }
+ if got := next.Type(); got != NDPTargetLinkLayerAddressOptionType {
+ t.Errorf("got Type = %d, want = %d", got, NDPTargetLinkLayerAddressOptionType)
+ }
+
+ // Test the next (Prefix Information) option.
+ // Note, the unrecognized option should be skipped.
+ next, done, err = it.Next()
+ if err != nil {
+ t.Fatalf("got Next = (_, _, %s), want = (_, _, nil)", err)
+ }
+ if done {
+ t.Fatal("got Next = (_, true, _), want = (_, false, _)")
+ }
+ if got, want := next.(NDPPrefixInformation), buf[34:][:30]; !bytes.Equal(got, want) {
+ t.Errorf("got Next = (%x, _, _), want = (%x, _, _)", got, want)
+ }
+ if got := next.Type(); got != NDPPrefixInformationType {
+ t.Errorf("got Type = %d, want = %d", got, NDPPrefixInformationType)
+ }
+
+ // Iterator should not return anything else.
+ next, done, err = it.Next()
+ if err != nil {
+ t.Errorf("got Next = (_, _, %s), want = (_, _, nil)", err)
+ }
+ if !done {
+ t.Error("got Next = (_, false, _), want = (_, true, _)")
+ }
+ if next != nil {
+ t.Errorf("got Next = (%x, _, _), want = (nil, _, _)", next)
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 07:22:34 +0000