// Copyright 2018 The go-ethereum Authors // This file is part of the go-ethereum library. // // The go-ethereum library is free software: you can redistribute it and/or modify // it under the terms of the GNU Lesser General Public License as published by // the Free Software Foundation, either version 3 of the License, or // (at your option) any later version. // // The go-ethereum library is distributed in the hope that it will be useful, // but WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the // GNU Lesser General Public License for more details. // // You should have received a copy of the GNU Lesser General Public License // along with the go-ethereum library. If not, see . package enode import ( "bytes" "encoding/hex" "fmt" "math/big" "net/netip" "testing" "testing/quick" "github.com/ethereum/go-ethereum/p2p/enr" "github.com/ethereum/go-ethereum/rlp" "github.com/stretchr/testify/assert" ) var pyRecord, _ = hex.DecodeString("f884b8407098ad865b00a582051940cb9cf36836572411a47278783077011599ed5cd16b76f2635f4e234738f30813a89eb9137e3e3df5266e3a1f11df72ecf1145ccb9c01826964827634826970847f00000189736563703235366b31a103ca634cae0d49acb401d8a4c6b6fe8c55b70d115bf400769cc1400f3258cd31388375647082765f") // TestPythonInterop checks that we can decode and verify a record produced by the Python // implementation. func TestPythonInterop(t *testing.T) { var r enr.Record if err := rlp.DecodeBytes(pyRecord, &r); err != nil { t.Fatalf("can't decode: %v", err) } n, err := New(ValidSchemes, &r) if err != nil { t.Fatalf("can't verify record: %v", err) } var ( wantID = HexID("a448f24c6d18e575453db13171562b71999873db5b286df957af199ec94617f7") wantSeq = uint64(1) wantIP = enr.IPv4{127, 0, 0, 1} wantUDP = enr.UDP(30303) ) if n.Seq() != wantSeq { t.Errorf("wrong seq: got %d, want %d", n.Seq(), wantSeq) } if n.ID() != wantID { t.Errorf("wrong id: got %x, want %x", n.ID(), wantID) } want := map[enr.Entry]interface{}{new(enr.IPv4): &wantIP, new(enr.UDP): &wantUDP} for k, v := range want { desc := fmt.Sprintf("loading key %q", k.ENRKey()) if assert.NoError(t, n.Load(k), desc) { assert.Equal(t, k, v, desc) } } } func TestNodeEndpoints(t *testing.T) { id := HexID("00000000000000806ad9b61fa5ae014307ebdc964253adcd9f2c0a392aa11abc") type endpointTest struct { name string node *Node wantIP netip.Addr wantUDP int wantTCP int } tests := []endpointTest{ { name: "no-addr", node: func() *Node { var r enr.Record return SignNull(&r, id) }(), }, { name: "udp-only", node: func() *Node { var r enr.Record r.Set(enr.UDP(9000)) return SignNull(&r, id) }(), }, { name: "tcp-only", node: func() *Node { var r enr.Record r.Set(enr.TCP(9000)) return SignNull(&r, id) }(), }, { name: "ipv4-only-loopback", node: func() *Node { var r enr.Record r.Set(enr.IPv4Addr(netip.MustParseAddr("127.0.0.1"))) return SignNull(&r, id) }(), wantIP: netip.MustParseAddr("127.0.0.1"), }, { name: "ipv4-only-unspecified", node: func() *Node { var r enr.Record r.Set(enr.IPv4Addr(netip.MustParseAddr("0.0.0.0"))) return SignNull(&r, id) }(), wantIP: netip.MustParseAddr("0.0.0.0"), }, { name: "ipv4-only", node: func() *Node { var r enr.Record r.Set(enr.IPv4Addr(netip.MustParseAddr("99.22.33.1"))) return SignNull(&r, id) }(), wantIP: netip.MustParseAddr("99.22.33.1"), }, { name: "ipv6-only", node: func() *Node { var r enr.Record r.Set(enr.IPv6Addr(netip.MustParseAddr("2001::ff00:0042:8329"))) return SignNull(&r, id) }(), wantIP: netip.MustParseAddr("2001::ff00:0042:8329"), }, { name: "ipv4-loopback-and-ipv6-global", node: func() *Node { var r enr.Record r.Set(enr.IPv4Addr(netip.MustParseAddr("127.0.0.1"))) r.Set(enr.UDP(30304)) r.Set(enr.IPv6Addr(netip.MustParseAddr("2001::ff00:0042:8329"))) r.Set(enr.UDP6(30306)) return SignNull(&r, id) }(), wantIP: netip.MustParseAddr("2001::ff00:0042:8329"), wantUDP: 30306, }, { name: "ipv4-unspecified-and-ipv6-loopback", node: func() *Node { var r enr.Record r.Set(enr.IPv4Addr(netip.MustParseAddr("0.0.0.0"))) r.Set(enr.IPv6Addr(netip.MustParseAddr("::1"))) return SignNull(&r, id) }(), wantIP: netip.MustParseAddr("::1"), }, { name: "ipv4-private-and-ipv6-global", node: func() *Node { var r enr.Record r.Set(enr.IPv4Addr(netip.MustParseAddr("192.168.2.2"))) r.Set(enr.UDP(30304)) r.Set(enr.IPv6Addr(netip.MustParseAddr("2001::ff00:0042:8329"))) r.Set(enr.UDP6(30306)) return SignNull(&r, id) }(), wantIP: netip.MustParseAddr("2001::ff00:0042:8329"), wantUDP: 30306, }, { name: "ipv4-local-and-ipv6-global", node: func() *Node { var r enr.Record r.Set(enr.IPv4Addr(netip.MustParseAddr("169.254.2.6"))) r.Set(enr.UDP(30304)) r.Set(enr.IPv6Addr(netip.MustParseAddr("2001::ff00:0042:8329"))) r.Set(enr.UDP6(30306)) return SignNull(&r, id) }(), wantIP: netip.MustParseAddr("2001::ff00:0042:8329"), wantUDP: 30306, }, { name: "ipv4-private-and-ipv6-private", node: func() *Node { var r enr.Record r.Set(enr.IPv4Addr(netip.MustParseAddr("192.168.2.2"))) r.Set(enr.UDP(30304)) r.Set(enr.IPv6Addr(netip.MustParseAddr("fd00::abcd:1"))) r.Set(enr.UDP6(30306)) return SignNull(&r, id) }(), wantIP: netip.MustParseAddr("192.168.2.2"), wantUDP: 30304, }, { name: "ipv4-private-and-ipv6-link-local", node: func() *Node { var r enr.Record r.Set(enr.IPv4Addr(netip.MustParseAddr("192.168.2.2"))) r.Set(enr.UDP(30304)) r.Set(enr.IPv6Addr(netip.MustParseAddr("fe80::1"))) r.Set(enr.UDP6(30306)) return SignNull(&r, id) }(), wantIP: netip.MustParseAddr("192.168.2.2"), wantUDP: 30304, }, } for _, test := range tests { t.Run(test.name, func(t *testing.T) { if test.wantIP != test.node.IPAddr() { t.Errorf("node has wrong IP %v, want %v", test.node.IPAddr(), test.wantIP) } if test.wantUDP != test.node.UDP() { t.Errorf("node has wrong UDP port %d, want %d", test.node.UDP(), test.wantUDP) } if test.wantTCP != test.node.TCP() { t.Errorf("node has wrong TCP port %d, want %d", test.node.TCP(), test.wantTCP) } }) } } func TestHexID(t *testing.T) { ref := ID{0, 0, 0, 0, 0, 0, 0, 128, 106, 217, 182, 31, 165, 174, 1, 67, 7, 235, 220, 150, 66, 83, 173, 205, 159, 44, 10, 57, 42, 161, 26, 188} id1 := HexID("0x00000000000000806ad9b61fa5ae014307ebdc964253adcd9f2c0a392aa11abc") id2 := HexID("00000000000000806ad9b61fa5ae014307ebdc964253adcd9f2c0a392aa11abc") if id1 != ref { t.Errorf("wrong id1\ngot %v\nwant %v", id1[:], ref[:]) } if id2 != ref { t.Errorf("wrong id2\ngot %v\nwant %v", id2[:], ref[:]) } } func TestID_textEncoding(t *testing.T) { ref := ID{ 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x30, 0x31, 0x32, } hex := "0102030405060708091011121314151617181920212223242526272829303132" text, err := ref.MarshalText() if err != nil { t.Fatal(err) } if !bytes.Equal(text, []byte(hex)) { t.Fatalf("text encoding did not match\nexpected: %s\ngot: %s", hex, text) } id := new(ID) if err := id.UnmarshalText(text); err != nil { t.Fatal(err) } if *id != ref { t.Fatalf("text decoding did not match\nexpected: %s\ngot: %s", ref, id) } } func TestID_distcmp(t *testing.T) { distcmpBig := func(target, a, b ID) int { tbig := new(big.Int).SetBytes(target[:]) abig := new(big.Int).SetBytes(a[:]) bbig := new(big.Int).SetBytes(b[:]) return new(big.Int).Xor(tbig, abig).Cmp(new(big.Int).Xor(tbig, bbig)) } if err := quick.CheckEqual(DistCmp, distcmpBig, nil); err != nil { t.Error(err) } } // The random tests is likely to miss the case where a and b are equal, // this test checks it explicitly. func TestID_distcmpEqual(t *testing.T) { base := ID{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15} x := ID{15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0} if DistCmp(base, x, x) != 0 { t.Errorf("DistCmp(base, x, x) != 0") } } func TestID_logdist(t *testing.T) { logdistBig := func(a, b ID) int { abig, bbig := new(big.Int).SetBytes(a[:]), new(big.Int).SetBytes(b[:]) return new(big.Int).Xor(abig, bbig).BitLen() } if err := quick.CheckEqual(LogDist, logdistBig, nil); err != nil { t.Error(err) } } // The random tests is likely to miss the case where a and b are equal, // this test checks it explicitly. func TestID_logdistEqual(t *testing.T) { x := ID{0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15} if LogDist(x, x) != 0 { t.Errorf("LogDist(x, x) != 0") } }