9f6bb492bb
* les, light: remove untrusted header retrieval in ODR * les: polish * light: check the hash equality in odr
223 lines
7.7 KiB
Go
223 lines
7.7 KiB
Go
// Copyright 2019 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 les
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import (
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"fmt"
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"math/big"
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"testing"
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"time"
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"github.com/ethereum/go-ethereum/accounts/abi/bind"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/light"
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"github.com/ethereum/go-ethereum/params"
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)
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// Test light syncing which will download all headers from genesis.
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func TestLightSyncingLes3(t *testing.T) { testCheckpointSyncing(t, 3, 0) }
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// Test legacy checkpoint syncing which will download tail headers
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// based on a hardcoded checkpoint.
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func TestLegacyCheckpointSyncingLes3(t *testing.T) { testCheckpointSyncing(t, 3, 1) }
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// Test checkpoint syncing which will download tail headers based
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// on a verified checkpoint.
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func TestCheckpointSyncingLes3(t *testing.T) { testCheckpointSyncing(t, 3, 2) }
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func testCheckpointSyncing(t *testing.T, protocol int, syncMode int) {
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config := light.TestServerIndexerConfig
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waitIndexers := func(cIndexer, bIndexer, btIndexer *core.ChainIndexer) {
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for {
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cs, _, _ := cIndexer.Sections()
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bts, _, _ := btIndexer.Sections()
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if cs >= 1 && bts >= 1 {
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break
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}
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time.Sleep(10 * time.Millisecond)
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}
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}
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// Generate 128+1 blocks (totally 1 CHT sections)
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server, client, tearDown := newClientServerEnv(t, int(config.ChtSize+config.ChtConfirms), protocol, waitIndexers, nil, 0, false, false, true)
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defer tearDown()
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expected := config.ChtSize + config.ChtConfirms
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// Checkpoint syncing or legacy checkpoint syncing.
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if syncMode == 1 || syncMode == 2 {
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// Assemble checkpoint 0
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s, _, head := server.chtIndexer.Sections()
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cp := ¶ms.TrustedCheckpoint{
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SectionIndex: 0,
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SectionHead: head,
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CHTRoot: light.GetChtRoot(server.db, s-1, head),
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BloomRoot: light.GetBloomTrieRoot(server.db, s-1, head),
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}
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if syncMode == 1 {
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// Register the assembled checkpoint as hardcoded one.
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client.handler.checkpoint = cp
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client.handler.backend.blockchain.AddTrustedCheckpoint(cp)
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} else {
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// Register the assembled checkpoint into oracle.
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header := server.backend.Blockchain().CurrentHeader()
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data := append([]byte{0x19, 0x00}, append(registrarAddr.Bytes(), append([]byte{0, 0, 0, 0, 0, 0, 0, 0}, cp.Hash().Bytes()...)...)...)
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sig, _ := crypto.Sign(crypto.Keccak256(data), signerKey)
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sig[64] += 27 // Transform V from 0/1 to 27/28 according to the yellow paper
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auth, _ := bind.NewKeyedTransactorWithChainID(signerKey, big.NewInt(1337))
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if _, err := server.handler.server.oracle.Contract().RegisterCheckpoint(auth, cp.SectionIndex, cp.Hash().Bytes(), new(big.Int).Sub(header.Number, big.NewInt(1)), header.ParentHash, [][]byte{sig}); err != nil {
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t.Error("register checkpoint failed", err)
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}
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server.backend.Commit()
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// Wait for the checkpoint registration
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for {
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_, hash, _, err := server.handler.server.oracle.Contract().Contract().GetLatestCheckpoint(nil)
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if err != nil || hash == [32]byte{} {
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time.Sleep(10 * time.Millisecond)
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continue
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}
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break
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}
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expected += 1
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}
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}
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done := make(chan error)
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client.handler.syncDone = func() {
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header := client.handler.backend.blockchain.CurrentHeader()
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if header.Number.Uint64() == expected {
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done <- nil
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} else {
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done <- fmt.Errorf("blockchain length mismatch, want %d, got %d", expected, header.Number)
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}
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}
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// Create connected peer pair.
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peer1, peer2, err := newTestPeerPair("peer", protocol, server.handler, client.handler)
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if err != nil {
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t.Fatalf("Failed to connect testing peers %v", err)
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}
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defer peer1.close()
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defer peer2.close()
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select {
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case err := <-done:
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if err != nil {
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t.Error("sync failed", err)
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}
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return
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case <-time.NewTimer(10 * time.Second).C:
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t.Error("checkpoint syncing timeout")
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}
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}
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func TestMissOracleBackend(t *testing.T) { testMissOracleBackend(t, true) }
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func TestMissOracleBackendNoCheckpoint(t *testing.T) { testMissOracleBackend(t, false) }
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func testMissOracleBackend(t *testing.T, hasCheckpoint bool) {
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config := light.TestServerIndexerConfig
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waitIndexers := func(cIndexer, bIndexer, btIndexer *core.ChainIndexer) {
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for {
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cs, _, _ := cIndexer.Sections()
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bts, _, _ := btIndexer.Sections()
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if cs >= 1 && bts >= 1 {
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break
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}
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time.Sleep(10 * time.Millisecond)
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}
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}
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// Generate 512+4 blocks (totally 1 CHT sections)
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server, client, tearDown := newClientServerEnv(t, int(config.ChtSize+config.ChtConfirms), 3, waitIndexers, nil, 0, false, false, true)
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defer tearDown()
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expected := config.ChtSize + config.ChtConfirms
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s, _, head := server.chtIndexer.Sections()
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cp := ¶ms.TrustedCheckpoint{
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SectionIndex: 0,
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SectionHead: head,
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CHTRoot: light.GetChtRoot(server.db, s-1, head),
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BloomRoot: light.GetBloomTrieRoot(server.db, s-1, head),
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}
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// Register the assembled checkpoint into oracle.
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header := server.backend.Blockchain().CurrentHeader()
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data := append([]byte{0x19, 0x00}, append(registrarAddr.Bytes(), append([]byte{0, 0, 0, 0, 0, 0, 0, 0}, cp.Hash().Bytes()...)...)...)
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sig, _ := crypto.Sign(crypto.Keccak256(data), signerKey)
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sig[64] += 27 // Transform V from 0/1 to 27/28 according to the yellow paper
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auth, _ := bind.NewKeyedTransactorWithChainID(signerKey, big.NewInt(1337))
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if _, err := server.handler.server.oracle.Contract().RegisterCheckpoint(auth, cp.SectionIndex, cp.Hash().Bytes(), new(big.Int).Sub(header.Number, big.NewInt(1)), header.ParentHash, [][]byte{sig}); err != nil {
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t.Error("register checkpoint failed", err)
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}
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server.backend.Commit()
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// Wait for the checkpoint registration
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for {
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_, hash, _, err := server.handler.server.oracle.Contract().Contract().GetLatestCheckpoint(nil)
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if err != nil || hash == [32]byte{} {
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time.Sleep(100 * time.Millisecond)
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continue
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}
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break
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}
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expected += 1
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// Explicitly set the oracle as nil. In normal use case it can happen
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// that user wants to unlock something which blocks the oracle backend
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// initialisation. But at the same time syncing starts.
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//
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// See https://github.com/ethereum/go-ethereum/issues/20097 for more detail.
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//
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// In this case, client should run light sync or legacy checkpoint sync
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// if hardcoded checkpoint is configured.
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client.handler.backend.oracle = nil
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// For some private networks it can happen checkpoint syncing is enabled
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// but there is no hardcoded checkpoint configured.
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if hasCheckpoint {
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client.handler.checkpoint = cp
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client.handler.backend.blockchain.AddTrustedCheckpoint(cp)
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}
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done := make(chan error)
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client.handler.syncDone = func() {
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header := client.handler.backend.blockchain.CurrentHeader()
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if header.Number.Uint64() == expected {
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done <- nil
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} else {
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done <- fmt.Errorf("blockchain length mismatch, want %d, got %d", expected, header.Number)
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}
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}
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// Create connected peer pair.
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if _, _, err := newTestPeerPair("peer", 2, server.handler, client.handler); err != nil {
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t.Fatalf("Failed to connect testing peers %v", err)
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}
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select {
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case err := <-done:
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if err != nil {
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t.Error("sync failed", err)
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}
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return
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case <-time.NewTimer(10 * time.Second).C:
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t.Error("checkpoint syncing timeout")
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}
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}
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