| // Copyright 2019 The gVisor Authors. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package header |
| |
| import ( |
| "bytes" |
| "testing" |
| "time" |
| |
| "github.com/google/go-cmp/cmp" |
| "gvisor.dev/gvisor/pkg/tcpip" |
| ) |
| |
| // TestNDPNeighborSolicit tests the functions of NDPNeighborSolicit. |
| func TestNDPNeighborSolicit(t *testing.T) { |
| b := []byte{ |
| 0, 0, 0, 0, |
| 1, 2, 3, 4, |
| 5, 6, 7, 8, |
| 9, 10, 11, 12, |
| 13, 14, 15, 16, |
| } |
| |
| // Test getting the Target Address. |
| 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.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.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.Errorf("got targetaddress buffer = %s, want %s", got, addr2) |
| } |
| } |
| |
| // TestNDPNeighborAdvert tests the functions of NDPNeighborAdvert. |
| func TestNDPNeighborAdvert(t *testing.T) { |
| b := []byte{ |
| 160, 0, 0, 0, |
| 1, 2, 3, 4, |
| 5, 6, 7, 8, |
| 9, 10, 11, 12, |
| 13, 14, 15, 16, |
| } |
| |
| // Test getting the Target Address. |
| 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.Errorf("got TargetAddress = %s, want %s", got, addr) |
| } |
| |
| // Test getting the Router Flag. |
| if got := na.RouterFlag(); !got { |
| t.Errorf("got RouterFlag = false, want = true") |
| } |
| |
| // Test getting the Solicited Flag. |
| if got := na.SolicitedFlag(); got { |
| t.Errorf("got SolicitedFlag = true, want = false") |
| } |
| |
| // Test getting the Override Flag. |
| if got := na.OverrideFlag(); !got { |
| 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.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.Errorf("got targetaddress buffer = %s, want %s", got, addr2) |
| } |
| |
| // Test updating the Router Flag. |
| na.SetRouterFlag(false) |
| if got := na.RouterFlag(); got { |
| t.Errorf("got RouterFlag = true, want = false") |
| } |
| |
| // Test updating the Solicited Flag. |
| na.SetSolicitedFlag(true) |
| if got := na.SolicitedFlag(); !got { |
| t.Errorf("got SolicitedFlag = false, want = true") |
| } |
| |
| // Test updating the Override Flag. |
| na.SetOverrideFlag(false) |
| if got := na.OverrideFlag(); got { |
| t.Errorf("got OverrideFlag = true, want = false") |
| } |
| |
| // Make sure flags got updated in the backing buffer. |
| if got := b[ndpNAFlagsOffset]; got != 64 { |
| t.Errorf("got flags byte = %d, want = 64") |
| } |
| } |
| |
| func TestNDPRouterAdvert(t *testing.T) { |
| b := []byte{ |
| 64, 128, 1, 2, |
| 3, 4, 5, 6, |
| 7, 8, 9, 10, |
| } |
| |
| ra := NDPRouterAdvert(b) |
| |
| if got := ra.CurrHopLimit(); got != 64 { |
| t.Errorf("got ra.CurrHopLimit = %d, want = 64", got) |
| } |
| |
| if got := ra.ManagedAddrConfFlag(); !got { |
| t.Errorf("got ManagedAddrConfFlag = false, want = true") |
| } |
| |
| if got := ra.OtherConfFlag(); got { |
| t.Errorf("got OtherConfFlag = true, want = false") |
| } |
| |
| if got, want := ra.RouterLifetime(), time.Second*258; got != want { |
| t.Errorf("got ra.RouterLifetime = %d, want = %d", got, want) |
| } |
| |
| if got, want := ra.ReachableTime(), time.Millisecond*50595078; got != want { |
| t.Errorf("got ra.ReachableTime = %d, want = %d", got, want) |
| } |
| |
| if got, want := ra.RetransTimer(), time.Millisecond*117967114; 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) |
| } |
| }) |
| } |
| } |
| |
| // TestNDPTargetLinkLayerAddressOptionSerialize tests serializing a |
| // NDPTargetLinkLayerAddressOption. |
| func TestNDPTargetLinkLayerAddressOptionSerialize(t *testing.T) { |
| tests := []struct { |
| name string |
| buf []byte |
| expectedBuf []byte |
| addr tcpip.LinkAddress |
| }{ |
| { |
| "Ethernet", |
| make([]byte, 8), |
| []byte{2, 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{2, 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{ |
| NDPTargetLinkLayerAddressOption(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 != 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", |
| } |
| if got := opt.Addresses(); !cmp.Equal(got, want) { |
| t.Errorf("got Addresses = %v, want = %v", 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 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) |
| } |
| if got := opt.Addresses(); !cmp.Equal(got, test.addrs) { |
| t.Errorf("got Addresses = %v, want = %v", got, test.addrs) |
| } |
| |
| // 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 |
| expected error |
| }{ |
| { |
| "ZeroLengthField", |
| []byte{0, 0, 0, 0, 0, 0, 0, 0}, |
| ErrNDPOptZeroLength, |
| }, |
| { |
| "ValidSourceLinkLayerAddressOption", |
| []byte{1, 1, 1, 2, 3, 4, 5, 6}, |
| nil, |
| }, |
| { |
| "TooSmallSourceLinkLayerAddressOption", |
| []byte{1, 1, 1, 2, 3, 4, 5}, |
| ErrNDPOptBufExhausted, |
| }, |
| { |
| "ValidTargetLinkLayerAddressOption", |
| []byte{2, 1, 1, 2, 3, 4, 5, 6}, |
| nil, |
| }, |
| { |
| "TooSmallTargetLinkLayerAddressOption", |
| []byte{2, 1, 1, 2, 3, 4, 5}, |
| ErrNDPOptBufExhausted, |
| }, |
| { |
| "ValidPrefixInformation", |
| []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, |
| }, |
| nil, |
| }, |
| { |
| "TooSmallPrefixInformation", |
| []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, |
| }, |
| ErrNDPOptBufExhausted, |
| }, |
| { |
| "InvalidPrefixInformationLength", |
| []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, |
| }, |
| ErrNDPOptMalformedBody, |
| }, |
| { |
| "ValidSourceAndTargetLinkLayerAddressWithPrefixInformation", |
| []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, |
| }, |
| nil, |
| }, |
| { |
| "ValidSourceAndTargetLinkLayerAddressWithPrefixInformationWithUnrecognized", |
| []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, |
| }, |
| nil, |
| }, |
| { |
| "InvalidRecursiveDNSServerCutsOffAddress", |
| []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, |
| }, |
| ErrNDPOptMalformedBody, |
| }, |
| { |
| "InvalidRecursiveDNSServerInvalidLengthField", |
| []byte{ |
| 25, 2, 0, 0, |
| 0, 0, 0, 0, |
| 0, 1, 2, 3, 4, 5, 6, 7, 8, |
| }, |
| ErrNDPInvalidLength, |
| }, |
| { |
| "RecursiveDNSServerTooSmall", |
| []byte{ |
| 25, 1, 0, 0, |
| 0, 0, 0, |
| }, |
| ErrNDPOptBufExhausted, |
| }, |
| { |
| "RecursiveDNSServerMulticast", |
| []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, |
| }, |
| ErrNDPOptMalformedBody, |
| }, |
| { |
| "RecursiveDNSServerUnspecified", |
| []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, |
| }, |
| ErrNDPOptMalformedBody, |
| }, |
| } |
| |
| for _, test := range tests { |
| t.Run(test.name, func(t *testing.T) { |
| opts := NDPOptions(test.buf) |
| |
| if _, err := opts.Iter(true); err != test.expected { |
| t.Fatalf("got Iter(true) = (_, %v), want = (_, %v)", err, test.expected) |
| } |
| |
| // 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) |
| } |
| } |