319 lines
8.4 KiB
Go
319 lines
8.4 KiB
Go
// Copyright 2017 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package enr
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import (
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"bytes"
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"encoding/hex"
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"fmt"
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"math/rand"
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"testing"
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"time"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/rlp"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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var (
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privkey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291")
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pubkey = &privkey.PublicKey
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)
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var rnd = rand.New(rand.NewSource(time.Now().UnixNano()))
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func randomString(strlen int) string {
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b := make([]byte, strlen)
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rnd.Read(b)
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return string(b)
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}
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// TestGetSetID tests encoding/decoding and setting/getting of the ID key.
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func TestGetSetID(t *testing.T) {
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id := ID("someid")
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var r Record
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r.Set(id)
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var id2 ID
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require.NoError(t, r.Load(&id2))
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assert.Equal(t, id, id2)
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}
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// TestGetSetIP4 tests encoding/decoding and setting/getting of the IP key.
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func TestGetSetIP4(t *testing.T) {
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ip := IP{192, 168, 0, 3}
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var r Record
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r.Set(ip)
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var ip2 IP
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require.NoError(t, r.Load(&ip2))
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assert.Equal(t, ip, ip2)
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}
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// TestGetSetIP6 tests encoding/decoding and setting/getting of the IP key.
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func TestGetSetIP6(t *testing.T) {
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ip := IP{0x20, 0x01, 0x48, 0x60, 0, 0, 0x20, 0x01, 0, 0, 0, 0, 0, 0, 0x00, 0x68}
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var r Record
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r.Set(ip)
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var ip2 IP
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require.NoError(t, r.Load(&ip2))
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assert.Equal(t, ip, ip2)
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}
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// TestGetSetDiscPort tests encoding/decoding and setting/getting of the DiscPort key.
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func TestGetSetUDP(t *testing.T) {
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port := UDP(30309)
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var r Record
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r.Set(port)
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var port2 UDP
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require.NoError(t, r.Load(&port2))
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assert.Equal(t, port, port2)
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}
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// TestGetSetSecp256k1 tests encoding/decoding and setting/getting of the Secp256k1 key.
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func TestGetSetSecp256k1(t *testing.T) {
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var r Record
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if err := SignV4(&r, privkey); err != nil {
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t.Fatal(err)
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}
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var pk Secp256k1
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require.NoError(t, r.Load(&pk))
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assert.EqualValues(t, pubkey, &pk)
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}
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func TestLoadErrors(t *testing.T) {
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var r Record
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ip4 := IP{127, 0, 0, 1}
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r.Set(ip4)
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// Check error for missing keys.
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var udp UDP
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err := r.Load(&udp)
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if !IsNotFound(err) {
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t.Error("IsNotFound should return true for missing key")
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}
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assert.Equal(t, &KeyError{Key: udp.ENRKey(), Err: errNotFound}, err)
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// Check error for invalid keys.
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var list []uint
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err = r.Load(WithEntry(ip4.ENRKey(), &list))
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kerr, ok := err.(*KeyError)
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if !ok {
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t.Fatalf("expected KeyError, got %T", err)
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}
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assert.Equal(t, kerr.Key, ip4.ENRKey())
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assert.Error(t, kerr.Err)
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if IsNotFound(err) {
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t.Error("IsNotFound should return false for decoding errors")
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}
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}
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// TestSortedGetAndSet tests that Set produced a sorted pairs slice.
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func TestSortedGetAndSet(t *testing.T) {
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type pair struct {
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k string
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v uint32
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}
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for _, tt := range []struct {
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input []pair
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want []pair
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}{
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{
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input: []pair{{"a", 1}, {"c", 2}, {"b", 3}},
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want: []pair{{"a", 1}, {"b", 3}, {"c", 2}},
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},
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{
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input: []pair{{"a", 1}, {"c", 2}, {"b", 3}, {"d", 4}, {"a", 5}, {"bb", 6}},
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want: []pair{{"a", 5}, {"b", 3}, {"bb", 6}, {"c", 2}, {"d", 4}},
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},
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{
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input: []pair{{"c", 2}, {"b", 3}, {"d", 4}, {"a", 5}, {"bb", 6}},
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want: []pair{{"a", 5}, {"b", 3}, {"bb", 6}, {"c", 2}, {"d", 4}},
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},
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} {
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var r Record
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for _, i := range tt.input {
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r.Set(WithEntry(i.k, &i.v))
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}
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for i, w := range tt.want {
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// set got's key from r.pair[i], so that we preserve order of pairs
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got := pair{k: r.pairs[i].k}
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assert.NoError(t, r.Load(WithEntry(w.k, &got.v)))
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assert.Equal(t, w, got)
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}
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}
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}
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// TestDirty tests record signature removal on setting of new key/value pair in record.
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func TestDirty(t *testing.T) {
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var r Record
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if r.Signed() {
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t.Error("Signed returned true for zero record")
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}
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if _, err := rlp.EncodeToBytes(r); err != errEncodeUnsigned {
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t.Errorf("expected errEncodeUnsigned, got %#v", err)
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}
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require.NoError(t, SignV4(&r, privkey))
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if !r.Signed() {
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t.Error("Signed return false for signed record")
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}
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_, err := rlp.EncodeToBytes(r)
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assert.NoError(t, err)
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r.SetSeq(3)
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if r.Signed() {
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t.Error("Signed returned true for modified record")
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}
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if _, err := rlp.EncodeToBytes(r); err != errEncodeUnsigned {
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t.Errorf("expected errEncodeUnsigned, got %#v", err)
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}
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}
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// TestGetSetOverwrite tests value overwrite when setting a new value with an existing key in record.
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func TestGetSetOverwrite(t *testing.T) {
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var r Record
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ip := IP{192, 168, 0, 3}
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r.Set(ip)
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ip2 := IP{192, 168, 0, 4}
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r.Set(ip2)
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var ip3 IP
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require.NoError(t, r.Load(&ip3))
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assert.Equal(t, ip2, ip3)
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}
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// TestSignEncodeAndDecode tests signing, RLP encoding and RLP decoding of a record.
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func TestSignEncodeAndDecode(t *testing.T) {
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var r Record
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r.Set(UDP(30303))
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r.Set(IP{127, 0, 0, 1})
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require.NoError(t, SignV4(&r, privkey))
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blob, err := rlp.EncodeToBytes(r)
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require.NoError(t, err)
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var r2 Record
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require.NoError(t, rlp.DecodeBytes(blob, &r2))
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assert.Equal(t, r, r2)
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blob2, err := rlp.EncodeToBytes(r2)
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require.NoError(t, err)
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assert.Equal(t, blob, blob2)
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}
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func TestNodeAddr(t *testing.T) {
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var r Record
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if addr := r.NodeAddr(); addr != nil {
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t.Errorf("wrong address on empty record: got %v, want %v", addr, nil)
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}
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require.NoError(t, SignV4(&r, privkey))
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expected := "a448f24c6d18e575453db13171562b71999873db5b286df957af199ec94617f7"
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assert.Equal(t, expected, hex.EncodeToString(r.NodeAddr()))
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}
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var pyRecord, _ = hex.DecodeString("f884b8407098ad865b00a582051940cb9cf36836572411a47278783077011599ed5cd16b76f2635f4e234738f30813a89eb9137e3e3df5266e3a1f11df72ecf1145ccb9c01826964827634826970847f00000189736563703235366b31a103ca634cae0d49acb401d8a4c6b6fe8c55b70d115bf400769cc1400f3258cd31388375647082765f")
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// TestPythonInterop checks that we can decode and verify a record produced by the Python
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// implementation.
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func TestPythonInterop(t *testing.T) {
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var r Record
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if err := rlp.DecodeBytes(pyRecord, &r); err != nil {
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t.Fatalf("can't decode: %v", err)
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}
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var (
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wantAddr, _ = hex.DecodeString("a448f24c6d18e575453db13171562b71999873db5b286df957af199ec94617f7")
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wantSeq = uint64(1)
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wantIP = IP{127, 0, 0, 1}
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wantUDP = UDP(30303)
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)
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if r.Seq() != wantSeq {
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t.Errorf("wrong seq: got %d, want %d", r.Seq(), wantSeq)
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}
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if addr := r.NodeAddr(); !bytes.Equal(addr, wantAddr) {
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t.Errorf("wrong addr: got %x, want %x", addr, wantAddr)
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}
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want := map[Entry]interface{}{new(IP): &wantIP, new(UDP): &wantUDP}
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for k, v := range want {
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desc := fmt.Sprintf("loading key %q", k.ENRKey())
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if assert.NoError(t, r.Load(k), desc) {
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assert.Equal(t, k, v, desc)
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}
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}
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}
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// TestRecordTooBig tests that records bigger than SizeLimit bytes cannot be signed.
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func TestRecordTooBig(t *testing.T) {
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var r Record
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key := randomString(10)
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// set a big value for random key, expect error
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r.Set(WithEntry(key, randomString(SizeLimit)))
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if err := SignV4(&r, privkey); err != errTooBig {
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t.Fatalf("expected to get errTooBig, got %#v", err)
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}
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// set an acceptable value for random key, expect no error
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r.Set(WithEntry(key, randomString(100)))
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require.NoError(t, SignV4(&r, privkey))
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}
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// TestSignEncodeAndDecodeRandom tests encoding/decoding of records containing random key/value pairs.
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func TestSignEncodeAndDecodeRandom(t *testing.T) {
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var r Record
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// random key/value pairs for testing
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pairs := map[string]uint32{}
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for i := 0; i < 10; i++ {
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key := randomString(7)
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value := rnd.Uint32()
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pairs[key] = value
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r.Set(WithEntry(key, &value))
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}
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require.NoError(t, SignV4(&r, privkey))
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_, err := rlp.EncodeToBytes(r)
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require.NoError(t, err)
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for k, v := range pairs {
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desc := fmt.Sprintf("key %q", k)
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var got uint32
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buf := WithEntry(k, &got)
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require.NoError(t, r.Load(buf), desc)
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require.Equal(t, v, got, desc)
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}
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}
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func BenchmarkDecode(b *testing.B) {
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var r Record
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for i := 0; i < b.N; i++ {
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rlp.DecodeBytes(pyRecord, &r)
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}
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b.StopTimer()
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r.NodeAddr()
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}
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