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all: on-chain oracle checkpoint syncing (#19543)

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* all: implement simple checkpoint syncing

cmd, les, node: remove callback mechanism

cmd, node: remove callback definition

les: simplify the registrar

les: expose checkpoint rpc services in the light client

les, light: don't store untrusted receipt

cmd, contracts, les: discard stale checkpoint

cmd, contracts/registrar: loose restriction of registeration

cmd, contracts: add replay-protection

all: off-chain multi-signature contract

params: deploy checkpoint contract for rinkeby

cmd/registrar: add raw signing mode for registrar

cmd/registrar, contracts/registrar, les: fixed messages

* cmd/registrar, contracts/registrar: fix lints

* accounts/abi/bind, les: address comments

* cmd, contracts, les, light, params: minor checkpoint sync cleanups

* cmd, eth, les, light: move checkpoint config to config file

* cmd, eth, les, params: address comments

* eth, les, params: address comments

* cmd: polish up the checkpoint admin CLI

* cmd, contracts, params: deploy new version contract

* cmd/checkpoint-admin: add another flag for clef mode signing

* cmd, contracts, les: rename and regen checkpoint oracle with abigen
This commit is contained in:
gary rong 2019-06-28 15:34:02 +08:00 committed by Péter Szilágyi
parent 702f52fb99
commit f7cdea2bdc
49 changed files with 2861 additions and 383 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
accounts/abi/bind/backends/simulated.go
View File

@ -45,8 +45,10 @@ import (
// This nil assignment ensures compile time that SimulatedBackend implements bind.ContractBackend. // This nil assignment ensures compile time that SimulatedBackend implements bind.ContractBackend.
var _ bind.ContractBackend = (*SimulatedBackend)(nil) var _ bind.ContractBackend = (*SimulatedBackend)(nil)
var errBlockNumberUnsupported = errors.New("SimulatedBackend cannot access blocks other than the latest block") var (
var errGasEstimationFailed = errors.New("gas required exceeds allowance or always failing transaction") errBlockNumberUnsupported = errors.New("simulatedBackend cannot access blocks other than the latest block")
errGasEstimationFailed = errors.New("gas required exceeds allowance or always failing transaction")
)
// SimulatedBackend implements bind.ContractBackend, simulating a blockchain in // SimulatedBackend implements bind.ContractBackend, simulating a blockchain in
// the background. Its main purpose is to allow easily testing contract bindings. // the background. Its main purpose is to allow easily testing contract bindings.
@ -63,10 +65,9 @@ type SimulatedBackend struct {
config *params.ChainConfig config *params.ChainConfig
} }
// NewSimulatedBackend creates a new binding backend using a simulated blockchain // NewSimulatedBackendWithDatabase creates a new binding backend based on the given database
// for testing purposes. // and uses a simulated blockchain for testing purposes.
func NewSimulatedBackend(alloc core.GenesisAlloc, gasLimit uint64) *SimulatedBackend { func NewSimulatedBackendWithDatabase(database ethdb.Database, alloc core.GenesisAlloc, gasLimit uint64) *SimulatedBackend {
database := rawdb.NewMemoryDatabase()
genesis := core.Genesis{Config: params.AllEthashProtocolChanges, GasLimit: gasLimit, Alloc: alloc} genesis := core.Genesis{Config: params.AllEthashProtocolChanges, GasLimit: gasLimit, Alloc: alloc}
genesis.MustCommit(database) genesis.MustCommit(database)
blockchain, _ := core.NewBlockChain(database, nil, genesis.Config, ethash.NewFaker(), vm.Config{}, nil) blockchain, _ := core.NewBlockChain(database, nil, genesis.Config, ethash.NewFaker(), vm.Config{}, nil)
@ -81,6 +82,12 @@ func NewSimulatedBackend(alloc core.GenesisAlloc, gasLimit uint64) *SimulatedBac
return backend return backend
} }
// NewSimulatedBackend creates a new binding backend using a simulated blockchain
// for testing purposes.
func NewSimulatedBackend(alloc core.GenesisAlloc, gasLimit uint64) *SimulatedBackend {
return NewSimulatedBackendWithDatabase(rawdb.NewMemoryDatabase(), alloc, gasLimit)
}
// Commit imports all the pending transactions as a single block and starts a // Commit imports all the pending transactions as a single block and starts a
// fresh new state. // fresh new state.
func (b *SimulatedBackend) Commit() { func (b *SimulatedBackend) Commit() {
@ -424,6 +431,11 @@ func (b *SimulatedBackend) AdjustTime(adjustment time.Duration) error {
return nil return nil
} }
// Blockchain returns the underlying blockchain.
func (b *SimulatedBackend) Blockchain() *core.BlockChain {
return b.blockchain
}
// callmsg implements core.Message to allow passing it as a transaction simulator. // callmsg implements core.Message to allow passing it as a transaction simulator.
type callmsg struct { type callmsg struct {
ethereum.CallMsg ethereum.CallMsg

3
accounts/abi/bind/bind_test.go
View File

@ -475,11 +475,12 @@ var bindTests = []struct {
` `
"github.com/ethereum/go-ethereum/accounts/abi/bind" "github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/accounts/abi/bind/backends" "github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/common"
`, `,
` `
// Create a simulator and wrap a non-deployed contract // Create a simulator and wrap a non-deployed contract
sim := backends.NewSimulatedBackend(nil, uint64(10000000000)) sim := backends.NewSimulatedBackend(core.GenesisAlloc{}, uint64(10000000000))
nonexistent, err := NewNonExistent(common.Address{}, sim) nonexistent, err := NewNonExistent(common.Address{}, sim)
if err != nil { if err != nil {

12
accounts/abi/bind/template.go
View File

@ -439,6 +439,18 @@ var (
} }
}), nil }), nil
} }
// Parse{{.Normalized.Name}} is a log parse operation binding the contract event 0x{{printf "%x" .Original.Id}}.
//
// Solidity: {{.Original.String}}
func (_{{$contract.Type}} *{{$contract.Type}}Filterer) Parse{{.Normalized.Name}}(log types.Log) (*{{$contract.Type}}{{.Normalized.Name}}, error) {
event := new({{$contract.Type}}{{.Normalized.Name}})
if err := _{{$contract.Type}}.contract.UnpackLog(event, "{{.Original.Name}}", log); err != nil {
return nil, err
}
return event, nil
}
{{end}} {{end}}
{{end}} {{end}}
` `

3
accounts/abi/bind/util_test.go
View File

@ -56,7 +56,8 @@ func TestWaitDeployed(t *testing.T) {
backend := backends.NewSimulatedBackend( backend := backends.NewSimulatedBackend(
core.GenesisAlloc{ core.GenesisAlloc{
crypto.PubkeyToAddress(testKey.PublicKey): {Balance: big.NewInt(10000000000)}, crypto.PubkeyToAddress(testKey.PublicKey): {Balance: big.NewInt(10000000000)},
}, 10000000, },
10000000,
) )
// Create the transaction. // Create the transaction.

166
cmd/checkpoint-admin/common.go Normal file
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@ -0,0 +1,166 @@
// Copyright 2018 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// go-ethereum 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
package main
import (
"io/ioutil"
"strconv"
"strings"
"github.com/ethereum/go-ethereum/accounts/keystore"
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/console"
"github.com/ethereum/go-ethereum/contracts/checkpointoracle"
"github.com/ethereum/go-ethereum/ethclient"
"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/rpc"
"gopkg.in/urfave/cli.v1"
)
// newClient creates a client with specified remote URL.
func newClient(ctx *cli.Context) *ethclient.Client {
client, err := ethclient.Dial(ctx.GlobalString(nodeURLFlag.Name))
if err != nil {
utils.Fatalf("Failed to connect to Ethereum node: %v", err)
}
return client
}
// newRPCClient creates a rpc client with specified node URL.
func newRPCClient(url string) *rpc.Client {
client, err := rpc.Dial(url)
if err != nil {
utils.Fatalf("Failed to connect to Ethereum node: %v", err)
}
return client
}
// getContractAddr retrieves the register contract address through
// rpc request.
func getContractAddr(client *rpc.Client) common.Address {
var addr string
if err := client.Call(&addr, "les_getCheckpointContractAddress"); err != nil {
utils.Fatalf("Failed to fetch checkpoint oracle address: %v", err)
}
return common.HexToAddress(addr)
}
// getCheckpoint retrieves the specified checkpoint or the latest one
// through rpc request.
func getCheckpoint(ctx *cli.Context, client *rpc.Client) *params.TrustedCheckpoint {
var checkpoint *params.TrustedCheckpoint
if ctx.GlobalIsSet(indexFlag.Name) {
var result [3]string
index := uint64(ctx.GlobalInt64(indexFlag.Name))
if err := client.Call(&result, "les_getCheckpoint", index); err != nil {
utils.Fatalf("Failed to get local checkpoint %v, please ensure the les API is exposed", err)
}
checkpoint = &params.TrustedCheckpoint{
SectionIndex: index,
SectionHead: common.HexToHash(result[0]),
CHTRoot: common.HexToHash(result[1]),
BloomRoot: common.HexToHash(result[2]),
}
} else {
var result [4]string
err := client.Call(&result, "les_latestCheckpoint")
if err != nil {
utils.Fatalf("Failed to get local checkpoint %v, please ensure the les API is exposed", err)
}
index, err := strconv.ParseUint(result[0], 0, 64)
if err != nil {
utils.Fatalf("Failed to parse checkpoint index %v", err)
}
checkpoint = &params.TrustedCheckpoint{
SectionIndex: index,
SectionHead: common.HexToHash(result[1]),
CHTRoot: common.HexToHash(result[2]),
BloomRoot: common.HexToHash(result[3]),
}
}
return checkpoint
}
// newContract creates a registrar contract instance with specified
// contract address or the default contracts for mainnet or testnet.
func newContract(client *rpc.Client) (common.Address, *checkpointoracle.CheckpointOracle) {
addr := getContractAddr(client)
if addr == (common.Address{}) {
utils.Fatalf("No specified registrar contract address")
}
contract, err := checkpointoracle.NewCheckpointOracle(addr, ethclient.NewClient(client))
if err != nil {
utils.Fatalf("Failed to setup registrar contract %s: %v", addr, err)
}
return addr, contract
}
// promptPassphrase prompts the user for a passphrase.
// Set confirmation to true to require the user to confirm the passphrase.
func promptPassphrase(confirmation bool) string {
passphrase, err := console.Stdin.PromptPassword("Passphrase: ")
if err != nil {
utils.Fatalf("Failed to read passphrase: %v", err)
}
if confirmation {
confirm, err := console.Stdin.PromptPassword("Repeat passphrase: ")
if err != nil {
utils.Fatalf("Failed to read passphrase confirmation: %v", err)
}
if passphrase != confirm {
utils.Fatalf("Passphrases do not match")
}
}
return passphrase
}
// getPassphrase obtains a passphrase given by the user. It first checks the
// --password command line flag and ultimately prompts the user for a
// passphrase.
func getPassphrase(ctx *cli.Context) string {
passphraseFile := ctx.String(utils.PasswordFileFlag.Name)
if passphraseFile != "" {
content, err := ioutil.ReadFile(passphraseFile)
if err != nil {
utils.Fatalf("Failed to read passphrase file '%s': %v",
passphraseFile, err)
}
return strings.TrimRight(string(content), "\r\n")
}
// Otherwise prompt the user for the passphrase.
return promptPassphrase(false)
}
// getKey retrieves the user key through specified key file.
func getKey(ctx *cli.Context) *keystore.Key {
// Read key from file.
keyFile := ctx.GlobalString(keyFileFlag.Name)
keyJson, err := ioutil.ReadFile(keyFile)
if err != nil {
utils.Fatalf("Failed to read the keyfile at '%s': %v", keyFile, err)
}
// Decrypt key with passphrase.
passphrase := getPassphrase(ctx)
key, err := keystore.DecryptKey(keyJson, passphrase)
if err != nil {
utils.Fatalf("Failed to decrypt user key '%s': %v", keyFile, err)
}
return key
}

335
cmd/checkpoint-admin/exec.go Normal file
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@ -0,0 +1,335 @@
// Copyright 2018 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// go-ethereum 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
package main
import (
"bytes"
"context"
"encoding/binary"
"fmt"
"math/big"
"strings"
"time"
"github.com/ethereum/go-ethereum/accounts"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/contracts/checkpointoracle"
"github.com/ethereum/go-ethereum/contracts/checkpointoracle/contract"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/ethclient"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/rpc"
"gopkg.in/urfave/cli.v1"
)
var commandDeploy = cli.Command{
Name: "deploy",
Usage: "Deploy a new checkpoint oracle contract",
Flags: []cli.Flag{
nodeURLFlag,
clefURLFlag,
signersFlag,
thresholdFlag,
keyFileFlag,
utils.PasswordFileFlag,
},
Action: utils.MigrateFlags(deploy),
}
var commandSign = cli.Command{
Name: "sign",
Usage: "Sign the checkpoint with the specified key",
Flags: []cli.Flag{
nodeURLFlag,
clefURLFlag,
indexFlag,
hashFlag,
oracleFlag,
keyFileFlag,
signerFlag,
utils.PasswordFileFlag,
},
Action: utils.MigrateFlags(sign),
}
var commandPublish = cli.Command{
Name: "publish",
Usage: "Publish a checkpoint into the oracle",
Flags: []cli.Flag{
nodeURLFlag,
indexFlag,
signaturesFlag,
keyFileFlag,
utils.PasswordFileFlag,
},
Action: utils.MigrateFlags(publish),
}
// deploy deploys the checkpoint registrar contract.
//
// Note the network where the contract is deployed depends on
// the network where the connected node is located.
func deploy(ctx *cli.Context) error {
// Gather all the addresses that should be permitted to sign
var addrs []common.Address
for _, account := range strings.Split(ctx.String(signersFlag.Name), ",") {
if trimmed := strings.TrimSpace(account); !common.IsHexAddress(trimmed) {
utils.Fatalf("Invalid account in --signers: '%s'", trimmed)
}
addrs = append(addrs, common.HexToAddress(account))
}
// Retrieve and validate the signing threshold
needed := ctx.Int(thresholdFlag.Name)
if needed == 0 || needed > len(addrs) {
utils.Fatalf("Invalid signature threshold %d", needed)
}
// Print a summary to ensure the user understands what they're signing
fmt.Printf("Deploying new checkpoint oracle:\n\n")
for i, addr := range addrs {
fmt.Printf("Admin %d => %s\n", i+1, addr.Hex())
}
fmt.Printf("\nSignatures needed to publish: %d\n", needed)
// Retrieve the private key, create an abigen transactor and an RPC client
transactor := bind.NewKeyedTransactor(getKey(ctx).PrivateKey)
client := newClient(ctx)
// Deploy the checkpoint oracle
oracle, tx, _, err := contract.DeployCheckpointOracle(transactor, client, addrs, big.NewInt(int64(params.CheckpointFrequency)),
big.NewInt(int64(params.CheckpointProcessConfirmations)), big.NewInt(int64(needed)))
if err != nil {
utils.Fatalf("Failed to deploy checkpoint oracle %v", err)
}
log.Info("Deployed checkpoint oracle", "address", oracle, "tx", tx.Hash().Hex())
return nil
}
// sign creates the signature for specific checkpoint
// with local key. Only contract admins have the permission to
// sign checkpoint.
func sign(ctx *cli.Context) error {
var (
offline bool // The indicator whether we sign checkpoint by offline.
chash common.Hash
cindex uint64
address common.Address
node *rpc.Client
oracle *checkpointoracle.CheckpointOracle
)
if !ctx.GlobalIsSet(nodeURLFlag.Name) {
// Offline mode signing
offline = true
if !ctx.IsSet(hashFlag.Name) {
utils.Fatalf("Please specify the checkpoint hash (--hash) to sign in offline mode")
}
chash = common.HexToHash(ctx.String(hashFlag.Name))
if !ctx.IsSet(indexFlag.Name) {
utils.Fatalf("Please specify checkpoint index (--index) to sign in offline mode")
}
cindex = ctx.Uint64(indexFlag.Name)
if !ctx.IsSet(oracleFlag.Name) {
utils.Fatalf("Please specify oracle address (--oracle) to sign in offline mode")
}
address = common.HexToAddress(ctx.String(oracleFlag.Name))
} else {
// Interactive mode signing, retrieve the data from the remote node
node = newRPCClient(ctx.GlobalString(nodeURLFlag.Name))
checkpoint := getCheckpoint(ctx, node)
chash = checkpoint.Hash()
cindex = checkpoint.SectionIndex
address = getContractAddr(node)
// Check the validity of checkpoint
reqCtx, cancelFn := context.WithTimeout(context.Background(), 10*time.Second)
defer cancelFn()
head, err := ethclient.NewClient(node).HeaderByNumber(reqCtx, nil)
if err != nil {
return err
}
num := head.Number.Uint64()
if num < ((cindex+1)*params.CheckpointFrequency + params.CheckpointProcessConfirmations) {
utils.Fatalf("Invalid future checkpoint")
}
_, oracle = newContract(node)
latest, _, h, err := oracle.Contract().GetLatestCheckpoint(nil)
if err != nil {
return err
}
if cindex < latest {
utils.Fatalf("Checkpoint is too old")
}
if cindex == latest && (latest != 0 || h.Uint64() != 0) {
utils.Fatalf("Stale checkpoint, latest registered %d, given %d", latest, cindex)
}
}
var (
signature string
signer string
)
// isAdmin checks whether the specified signer is admin.
isAdmin := func(addr common.Address) error {
signers, err := oracle.Contract().GetAllAdmin(nil)
if err != nil {
return err
}
for _, s := range signers {
if s == addr {
return nil
}
}
return fmt.Errorf("signer %v is not the admin", addr.Hex())
}
// Print to the user the data thy are about to sign
fmt.Printf("Oracle => %s\n", address.Hex())
fmt.Printf("Index %4d => %s\n", cindex, chash.Hex())
switch {
case ctx.GlobalIsSet(clefURLFlag.Name):
// Sign checkpoint in clef mode.
signer = ctx.String(signerFlag.Name)
if !offline {
if err := isAdmin(common.HexToAddress(signer)); err != nil {
return err
}
}
clef := newRPCClient(ctx.GlobalString(clefURLFlag.Name))
p := make(map[string]string)
buf := make([]byte, 8)
binary.BigEndian.PutUint64(buf, cindex)
p["address"] = address.Hex()
p["message"] = hexutil.Encode(append(buf, chash.Bytes()...))
if err := clef.Call(&signature, "account_signData", accounts.MimetypeDataWithValidator, signer, p); err != nil {
utils.Fatalf("Failed to sign checkpoint, err %v", err)
}
case ctx.GlobalIsSet(keyFileFlag.Name):
// Sign checkpoint in raw private key file mode.
key := getKey(ctx)
signer = key.Address.Hex()
if !offline {
if err := isAdmin(key.Address); err != nil {
return err
}
}
sig, err := crypto.Sign(sighash(cindex, address, chash), key.PrivateKey)
if err != nil {
utils.Fatalf("Failed to sign checkpoint, err %v", err)
}
sig[64] += 27 // Transform V from 0/1 to 27/28 according to the yellow paper
signature = common.Bytes2Hex(sig)
default:
utils.Fatalf("Please specify clef URL or private key file path to sign checkpoint")
}
fmt.Printf("Signer => %s\n", signer)
fmt.Printf("Signature => %s\n", signature)
return nil
}
// sighash calculates the hash of the data to sign for the checkpoint oracle.
func sighash(index uint64, oracle common.Address, hash common.Hash) []byte {
buf := make([]byte, 8)
binary.BigEndian.PutUint64(buf, index)
data := append([]byte{0x19, 0x00}, append(oracle[:], append(buf, hash[:]...)...)...)
return crypto.Keccak256(data)
}
// ecrecover calculates the sender address from a sighash and signature combo.
func ecrecover(sighash []byte, sig []byte) common.Address {
sig[64] -= 27
defer func() { sig[64] += 27 }()
signer, err := crypto.SigToPub(sighash, sig)
if err != nil {
utils.Fatalf("Failed to recover sender from signature %x: %v", sig, err)
}
return crypto.PubkeyToAddress(*signer)
}
// publish registers the specified checkpoint which generated by connected node
// with a authorised private key.
func publish(ctx *cli.Context) error {
// Print the checkpoint oracle's current status to make sure we're interacting
// with the correct network and contract.
status(ctx)
// Gather the signatures from the CLI
var sigs [][]byte
for _, sig := range strings.Split(ctx.String(signaturesFlag.Name), ",") {
trimmed := strings.TrimPrefix(strings.TrimSpace(sig), "0x")
if len(trimmed) != 130 {
utils.Fatalf("Invalid signature in --signature: '%s'", trimmed)
} else {
sigs = append(sigs, common.Hex2Bytes(trimmed))
}
}
// Retrieve the checkpoint we want to sign to sort the signatures
var (
client = newRPCClient(ctx.GlobalString(nodeURLFlag.Name))
addr, oracle = newContract(client)
checkpoint = getCheckpoint(ctx, client)
sighash = sighash(checkpoint.SectionIndex, addr, checkpoint.Hash())
)
for i := 0; i < len(sigs); i++ {
for j := i + 1; j < len(sigs); j++ {
signerA := ecrecover(sighash, sigs[i])
signerB := ecrecover(sighash, sigs[j])
if bytes.Compare(signerA.Bytes(), signerB.Bytes()) > 0 {
sigs[i], sigs[j] = sigs[j], sigs[i]
}
}
}
// Retrieve recent header info to protect replay attack
reqCtx, cancelFn := context.WithTimeout(context.Background(), 10*time.Second)
defer cancelFn()
head, err := ethclient.NewClient(client).HeaderByNumber(reqCtx, nil)
if err != nil {
return err
}
num := head.Number.Uint64()
recent, err := ethclient.NewClient(client).HeaderByNumber(reqCtx, big.NewInt(int64(num-128)))
if err != nil {
return err
}
// Print a summary of the operation that's going to be performed
fmt.Printf("Publishing %d => %s:\n\n", checkpoint.SectionIndex, checkpoint.Hash().Hex())
for i, sig := range sigs {
fmt.Printf("Signer %d => %s\n", i+1, ecrecover(sighash, sig).Hex())
}
fmt.Println()
fmt.Printf("Sentry number => %d\nSentry hash => %s\n", recent.Number, recent.Hash().Hex())
// Publish the checkpoint into the oracle
tx, err := oracle.RegisterCheckpoint(getKey(ctx).PrivateKey, checkpoint.SectionIndex, checkpoint.Hash().Bytes(), recent.Number, recent.Hash(), sigs)
if err != nil {
utils.Fatalf("Register contract failed %v", err)
}
log.Info("Successfully registered checkpoint", "tx", tx.Hash().Hex())
return nil
}

124
cmd/checkpoint-admin/main.go Normal file
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@ -0,0 +1,124 @@
// Copyright 2018 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// go-ethereum 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
// checkpoint-admin is a utility that can be used to query checkpoint information
// and register stable checkpoints into an oracle contract.
package main
import (
"fmt"
"os"
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/common/fdlimit"
"github.com/ethereum/go-ethereum/log"
"gopkg.in/urfave/cli.v1"
)
const (
commandHelperTemplate = `{{.Name}}{{if .Subcommands}} command{{end}}{{if .Flags}} [command options]{{end}} [arguments...]
{{if .Description}}{{.Description}}
{{end}}{{if .Subcommands}}
SUBCOMMANDS:
{{range .Subcommands}}{{.Name}}{{with .ShortName}}, {{.}}{{end}}{{ "\t" }}{{.Usage}}
{{end}}{{end}}{{if .Flags}}
OPTIONS:
{{range $.Flags}}{{"\t"}}{{.}}
{{end}}
{{end}}`
)
var (
// Git SHA1 commit hash of the release (set via linker flags)
gitCommit = ""
gitDate = ""
)
var app *cli.App
func init() {
app = utils.NewApp(gitCommit, gitDate, "ethereum checkpoint helper tool")
app.Commands = []cli.Command{
commandStatus,
commandDeploy,
commandSign,
commandPublish,
}
app.Flags = []cli.Flag{
oracleFlag,
keyFileFlag,
nodeURLFlag,
clefURLFlag,
utils.PasswordFileFlag,
}
cli.CommandHelpTemplate = commandHelperTemplate
}
// Commonly used command line flags.
var (
indexFlag = cli.Int64Flag{
Name: "index",
Usage: "Checkpoint index (query latest from remote node if not specified)",
}
hashFlag = cli.StringFlag{
Name: "hash",
Usage: "Checkpoint hash (query latest from remote node if not specified)",
}
oracleFlag = cli.StringFlag{
Name: "oracle",
Usage: "Checkpoint oracle address (query from remote node if not specified)",
}
thresholdFlag = cli.Int64Flag{
Name: "threshold",
Usage: "Minimal number of signatures required to approve a checkpoint",
}
keyFileFlag = cli.StringFlag{
Name: "keyfile",
Usage: "The private key file (keyfile signature is not recommended)",
}
nodeURLFlag = cli.StringFlag{
Name: "rpc",
Value: "http://localhost:8545",
Usage: "The rpc endpoint of a local or remote geth node",
}
clefURLFlag = cli.StringFlag{
Name: "clef",
Value: "http://localhost:8550",
Usage: "The rpc endpoint of clef",
}
signerFlag = cli.StringFlag{
Name: "signer",
Usage: "Signer address for clef mode signing",
}
signersFlag = cli.StringFlag{
Name: "signers",
Usage: "Comma separated accounts of trusted checkpoint signers",
}
signaturesFlag = cli.StringFlag{
Name: "signatures",
Usage: "Comma separated checkpoint signatures to submit",
}
)
func main() {
log.Root().SetHandler(log.LvlFilterHandler(log.LvlInfo, log.StreamHandler(os.Stderr, log.TerminalFormat(true))))
fdlimit.Raise(2048)
if err := app.Run(os.Args); err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
}

61
cmd/checkpoint-admin/status.go Normal file
View File

@ -0,0 +1,61 @@
// Copyright 2018 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// go-ethereum 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
package main
import (
"fmt"
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/common"
"gopkg.in/urfave/cli.v1"
)
var commandStatus = cli.Command{
Name: "status",
Usage: "Fetches the signers and checkpoint status of the oracle contract",
Flags: []cli.Flag{
nodeURLFlag,
},
Action: utils.MigrateFlags(status),
}
// status fetches the admin list of specified registrar contract.
func status(ctx *cli.Context) error {
// Create a wrapper around the checkpoint oracle contract
addr, oracle := newContract(newRPCClient(ctx.GlobalString(nodeURLFlag.Name)))
fmt.Printf("Oracle => %s\n", addr.Hex())
fmt.Println()
// Retrieve the list of authorized signers (admins)
admins, err := oracle.Contract().GetAllAdmin(nil)
if err != nil {
return err
}
for i, admin := range admins {
fmt.Printf("Admin %d => %s\n", i+1, admin.Hex())
}
fmt.Println()
// Retrieve the latest checkpoint
index, checkpoint, height, err := oracle.Contract().GetLatestCheckpoint(nil)
if err != nil {
return err
}
fmt.Printf("Checkpoint (published at #%d) %d => %s\n", height, index, common.Hash(checkpoint).Hex())
return nil
}

37
cmd/geth/main.go
View File

@ -37,6 +37,7 @@ import (
"github.com/ethereum/go-ethereum/eth/downloader" "github.com/ethereum/go-ethereum/eth/downloader"
"github.com/ethereum/go-ethereum/ethclient" "github.com/ethereum/go-ethereum/ethclient"
"github.com/ethereum/go-ethereum/internal/debug" "github.com/ethereum/go-ethereum/internal/debug"
"github.com/ethereum/go-ethereum/les"
"github.com/ethereum/go-ethereum/log" "github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/metrics" "github.com/ethereum/go-ethereum/metrics"
"github.com/ethereum/go-ethereum/node" "github.com/ethereum/go-ethereum/node"
@ -323,14 +324,33 @@ func startNode(ctx *cli.Context, stack *node.Node) {
events := make(chan accounts.WalletEvent, 16) events := make(chan accounts.WalletEvent, 16)
stack.AccountManager().Subscribe(events) stack.AccountManager().Subscribe(events)
go func() { // Create a client to interact with local geth node.
// Create a chain state reader for self-derivation rpcClient, err := stack.Attach()
rpcClient, err := stack.Attach() if err != nil {
if err != nil { utils.Fatalf("Failed to attach to self: %v", err)
utils.Fatalf("Failed to attach to self: %v", err) }
} ethClient := ethclient.NewClient(rpcClient)
stateReader := ethclient.NewClient(rpcClient)
// Set contract backend for ethereum service if local node
// is serving LES requests.
if ctx.GlobalInt(utils.LightServFlag.Name) > 0 {
var ethService *eth.Ethereum
if err := stack.Service(&ethService); err != nil {
utils.Fatalf("Failed to retrieve ethereum service: %v", err)
}
ethService.SetContractBackend(ethClient)
}
// Set contract backend for les service if local node is
// running as a light client.
if ctx.GlobalString(utils.SyncModeFlag.Name) == "light" {
var lesService *les.LightEthereum
if err := stack.Service(&lesService); err != nil {
utils.Fatalf("Failed to retrieve light ethereum service: %v", err)
}
lesService.SetContractBackend(ethClient)
}
go func() {
// Open any wallets already attached // Open any wallets already attached
for _, wallet := range stack.AccountManager().Wallets() { for _, wallet := range stack.AccountManager().Wallets() {
if err := wallet.Open(""); err != nil { if err := wallet.Open(""); err != nil {
@ -354,7 +374,7 @@ func startNode(ctx *cli.Context, stack *node.Node) {
} }
derivationPaths = append(derivationPaths, accounts.DefaultBaseDerivationPath) derivationPaths = append(derivationPaths, accounts.DefaultBaseDerivationPath)
event.Wallet.SelfDerive(derivationPaths, stateReader) event.Wallet.SelfDerive(derivationPaths, ethClient)
case accounts.WalletDropped: case accounts.WalletDropped:
log.Info("Old wallet dropped", "url", event.Wallet.URL()) log.Info("Old wallet dropped", "url", event.Wallet.URL())
@ -383,7 +403,6 @@ func startNode(ctx *cli.Context, stack *node.Node) {
"age", common.PrettyAge(timestamp)) "age", common.PrettyAge(timestamp))
stack.Stop() stack.Stop()
} }
} }
}() }()
} }

17
cmd/puppeth/wizard_genesis.go
View File

@ -44,12 +44,13 @@ func (w *wizard) makeGenesis() {
Difficulty: big.NewInt(524288), Difficulty: big.NewInt(524288),
Alloc: make(core.GenesisAlloc), Alloc: make(core.GenesisAlloc),
Config: &params.ChainConfig{ Config: &params.ChainConfig{
HomesteadBlock: big.NewInt(1), HomesteadBlock: big.NewInt(0),
EIP150Block: big.NewInt(2), EIP150Block: big.NewInt(0),
EIP155Block: big.NewInt(3), EIP155Block: big.NewInt(0),
EIP158Block: big.NewInt(3), EIP158Block: big.NewInt(0),
ByzantiumBlock: big.NewInt(4), ByzantiumBlock: big.NewInt(0),
ConstantinopleBlock: big.NewInt(5), ConstantinopleBlock: big.NewInt(0),
PetersburgBlock: big.NewInt(0),
}, },
} }
// Figure out which consensus engine to choose // Figure out which consensus engine to choose
@ -191,7 +192,7 @@ func (w *wizard) importGenesis() {
func (w *wizard) manageGenesis() { func (w *wizard) manageGenesis() {
// Figure out whether to modify or export the genesis // Figure out whether to modify or export the genesis
fmt.Println() fmt.Println()
fmt.Println(" 1. Modify existing fork rules") fmt.Println(" 1. Modify existing configurations")
fmt.Println(" 2. Export genesis configurations") fmt.Println(" 2. Export genesis configurations")
fmt.Println(" 3. Remove genesis configuration") fmt.Println(" 3. Remove genesis configuration")
@ -226,7 +227,7 @@ func (w *wizard) manageGenesis() {
w.conf.Genesis.Config.PetersburgBlock = w.conf.Genesis.Config.ConstantinopleBlock w.conf.Genesis.Config.PetersburgBlock = w.conf.Genesis.Config.ConstantinopleBlock
} }
fmt.Println() fmt.Println()
fmt.Printf("Which block should Constantinople-Fix (remove EIP-1283) come into effect? (default = %v)\n", w.conf.Genesis.Config.PetersburgBlock) fmt.Printf("Which block should Petersburg come into effect? (default = %v)\n", w.conf.Genesis.Config.PetersburgBlock)
w.conf.Genesis.Config.PetersburgBlock = w.readDefaultBigInt(w.conf.Genesis.Config.PetersburgBlock) w.conf.Genesis.Config.PetersburgBlock = w.readDefaultBigInt(w.conf.Genesis.Config.PetersburgBlock)
out, _ := json.MarshalIndent(w.conf.Genesis.Config, "", " ") out, _ := json.MarshalIndent(w.conf.Genesis.Config, "", " ")

415
contracts/checkpointoracle/contract/oracle.go Normal file
View File

@ -0,0 +1,415 @@
// Code generated - DO NOT EDIT.
// This file is a generated binding and any manual changes will be lost.
package contract
import (
"math/big"
"strings"
ethereum "github.com/ethereum/go-ethereum"
"github.com/ethereum/go-ethereum/accounts/abi"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/event"
)
// Reference imports to suppress errors if they are not otherwise used.
var (
_ = big.NewInt
_ = strings.NewReader
_ = ethereum.NotFound
_ = abi.U256
_ = bind.Bind
_ = common.Big1
_ = types.BloomLookup
_ = event.NewSubscription
)
// CheckpointOracleABI is the input ABI used to generate the binding from.
const CheckpointOracleABI = "[{\"constant\":true,\"inputs\":[],\"name\":\"GetAllAdmin\",\"outputs\":[{\"name\":\"\",\"type\":\"address[]\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":true,\"inputs\":[],\"name\":\"GetLatestCheckpoint\",\"outputs\":[{\"name\":\"\",\"type\":\"uint64\"},{\"name\":\"\",\"type\":\"bytes32\"},{\"name\":\"\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"view\",\"type\":\"function\"},{\"constant\":false,\"inputs\":[{\"name\":\"_recentNumber\",\"type\":\"uint256\"},{\"name\":\"_recentHash\",\"type\":\"bytes32\"},{\"name\":\"_hash\",\"type\":\"bytes32\"},{\"name\":\"_sectionIndex\",\"type\":\"uint64\"},{\"name\":\"v\",\"type\":\"uint8[]\"},{\"name\":\"r\",\"type\":\"bytes32[]\"},{\"name\":\"s\",\"type\":\"bytes32[]\"}],\"name\":\"SetCheckpoint\",\"outputs\":[{\"name\":\"\",\"type\":\"bool\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"name\":\"_adminlist\",\"type\":\"address[]\"},{\"name\":\"_sectionSize\",\"type\":\"uint256\"},{\"name\":\"_processConfirms\",\"type\":\"uint256\"},{\"name\":\"_threshold\",\"type\":\"uint256\"}],\"payable\":false,\"stateMutability\":\"nonpayable\",\"type\":\"constructor\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"name\":\"index\",\"type\":\"uint64\"},{\"indexed\":false,\"name\":\"checkpointHash\",\"type\":\"bytes32\"},{\"indexed\":false,\"name\":\"v\",\"type\":\"uint8\"},{\"indexed\":false,\"name\":\"r\",\"type\":\"bytes32\"},{\"indexed\":false,\"name\":\"s\",\"type\":\"bytes32\"}],\"name\":\"NewCheckpointVote\",\"type\":\"event\"}]"
// CheckpointOracleBin is the compiled bytecode used for deploying new contracts.
const CheckpointOracleBin = `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`
// DeployCheckpointOracle deploys a new Ethereum contract, binding an instance of CheckpointOracle to it.
func DeployCheckpointOracle(auth *bind.TransactOpts, backend bind.ContractBackend, _adminlist []common.Address, _sectionSize *big.Int, _processConfirms *big.Int, _threshold *big.Int) (common.Address, *types.Transaction, *CheckpointOracle, error) {
parsed, err := abi.JSON(strings.NewReader(CheckpointOracleABI))
if err != nil {
return common.Address{}, nil, nil, err
}
address, tx, contract, err := bind.DeployContract(auth, parsed, common.FromHex(CheckpointOracleBin), backend, _adminlist, _sectionSize, _processConfirms, _threshold)
if err != nil {
return common.Address{}, nil, nil, err
}
return address, tx, &CheckpointOracle{CheckpointOracleCaller: CheckpointOracleCaller{contract: contract}, CheckpointOracleTransactor: CheckpointOracleTransactor{contract: contract}, CheckpointOracleFilterer: CheckpointOracleFilterer{contract: contract}}, nil
}
// CheckpointOracle is an auto generated Go binding around an Ethereum contract.
type CheckpointOracle struct {
CheckpointOracleCaller // Read-only binding to the contract
CheckpointOracleTransactor // Write-only binding to the contract
CheckpointOracleFilterer // Log filterer for contract events
}
// CheckpointOracleCaller is an auto generated read-only Go binding around an Ethereum contract.
type CheckpointOracleCaller struct {
contract *bind.BoundContract // Generic contract wrapper for the low level calls
}
// CheckpointOracleTransactor is an auto generated write-only Go binding around an Ethereum contract.
type CheckpointOracleTransactor struct {
contract *bind.BoundContract // Generic contract wrapper for the low level calls
}
// CheckpointOracleFilterer is an auto generated log filtering Go binding around an Ethereum contract events.
type CheckpointOracleFilterer struct {
contract *bind.BoundContract // Generic contract wrapper for the low level calls
}
// CheckpointOracleSession is an auto generated Go binding around an Ethereum contract,
// with pre-set call and transact options.
type CheckpointOracleSession struct {
Contract *CheckpointOracle // Generic contract binding to set the session for
CallOpts bind.CallOpts // Call options to use throughout this session
TransactOpts bind.TransactOpts // Transaction auth options to use throughout this session
}
// CheckpointOracleCallerSession is an auto generated read-only Go binding around an Ethereum contract,
// with pre-set call options.
type CheckpointOracleCallerSession struct {
Contract *CheckpointOracleCaller // Generic contract caller binding to set the session for
CallOpts bind.CallOpts // Call options to use throughout this session
}
// CheckpointOracleTransactorSession is an auto generated write-only Go binding around an Ethereum contract,
// with pre-set transact options.
type CheckpointOracleTransactorSession struct {
Contract *CheckpointOracleTransactor // Generic contract transactor binding to set the session for
TransactOpts bind.TransactOpts // Transaction auth options to use throughout this session
}
// CheckpointOracleRaw is an auto generated low-level Go binding around an Ethereum contract.
type CheckpointOracleRaw struct {
Contract *CheckpointOracle // Generic contract binding to access the raw methods on
}
// CheckpointOracleCallerRaw is an auto generated low-level read-only Go binding around an Ethereum contract.
type CheckpointOracleCallerRaw struct {
Contract *CheckpointOracleCaller // Generic read-only contract binding to access the raw methods on
}
// CheckpointOracleTransactorRaw is an auto generated low-level write-only Go binding around an Ethereum contract.
type CheckpointOracleTransactorRaw struct {
Contract *CheckpointOracleTransactor // Generic write-only contract binding to access the raw methods on
}
// NewCheckpointOracle creates a new instance of CheckpointOracle, bound to a specific deployed contract.
func NewCheckpointOracle(address common.Address, backend bind.ContractBackend) (*CheckpointOracle, error) {
contract, err := bindCheckpointOracle(address, backend, backend, backend)
if err != nil {
return nil, err
}
return &CheckpointOracle{CheckpointOracleCaller: CheckpointOracleCaller{contract: contract}, CheckpointOracleTransactor: CheckpointOracleTransactor{contract: contract}, CheckpointOracleFilterer: CheckpointOracleFilterer{contract: contract}}, nil
}
// NewCheckpointOracleCaller creates a new read-only instance of CheckpointOracle, bound to a specific deployed contract.
func NewCheckpointOracleCaller(address common.Address, caller bind.ContractCaller) (*CheckpointOracleCaller, error) {
contract, err := bindCheckpointOracle(address, caller, nil, nil)
if err != nil {
return nil, err
}
return &CheckpointOracleCaller{contract: contract}, nil
}
// NewCheckpointOracleTransactor creates a new write-only instance of CheckpointOracle, bound to a specific deployed contract.
func NewCheckpointOracleTransactor(address common.Address, transactor bind.ContractTransactor) (*CheckpointOracleTransactor, error) {
contract, err := bindCheckpointOracle(address, nil, transactor, nil)
if err != nil {
return nil, err
}
return &CheckpointOracleTransactor{contract: contract}, nil
}
// NewCheckpointOracleFilterer creates a new log filterer instance of CheckpointOracle, bound to a specific deployed contract.
func NewCheckpointOracleFilterer(address common.Address, filterer bind.ContractFilterer) (*CheckpointOracleFilterer, error) {
contract, err := bindCheckpointOracle(address, nil, nil, filterer)
if err != nil {
return nil, err
}
return &CheckpointOracleFilterer{contract: contract}, nil
}
// bindCheckpointOracle binds a generic wrapper to an already deployed contract.
func bindCheckpointOracle(address common.Address, caller bind.ContractCaller, transactor bind.ContractTransactor, filterer bind.ContractFilterer) (*bind.BoundContract, error) {
parsed, err := abi.JSON(strings.NewReader(CheckpointOracleABI))
if err != nil {
return nil, err
}
return bind.NewBoundContract(address, parsed, caller, transactor, filterer), nil
}
// Call invokes the (constant) contract method with params as input values and
// sets the output to result. The result type might be a single field for simple
// returns, a slice of interfaces for anonymous returns and a struct for named
// returns.
func (_CheckpointOracle *CheckpointOracleRaw) Call(opts *bind.CallOpts, result interface{}, method string, params ...interface{}) error {
return _CheckpointOracle.Contract.CheckpointOracleCaller.contract.Call(opts, result, method, params...)
}
// Transfer initiates a plain transaction to move funds to the contract, calling
// its default method if one is available.
func (_CheckpointOracle *CheckpointOracleRaw) Transfer(opts *bind.TransactOpts) (*types.Transaction, error) {
return _CheckpointOracle.Contract.CheckpointOracleTransactor.contract.Transfer(opts)
}
// Transact invokes the (paid) contract method with params as input values.
func (_CheckpointOracle *CheckpointOracleRaw) Transact(opts *bind.TransactOpts, method string, params ...interface{}) (*types.Transaction, error) {
return _CheckpointOracle.Contract.CheckpointOracleTransactor.contract.Transact(opts, method, params...)
}
// Call invokes the (constant) contract method with params as input values and
// sets the output to result. The result type might be a single field for simple
// returns, a slice of interfaces for anonymous returns and a struct for named
// returns.
func (_CheckpointOracle *CheckpointOracleCallerRaw) Call(opts *bind.CallOpts, result interface{}, method string, params ...interface{}) error {
return _CheckpointOracle.Contract.contract.Call(opts, result, method, params...)
}
// Transfer initiates a plain transaction to move funds to the contract, calling
// its default method if one is available.
func (_CheckpointOracle *CheckpointOracleTransactorRaw) Transfer(opts *bind.TransactOpts) (*types.Transaction, error) {
return _CheckpointOracle.Contract.contract.Transfer(opts)
}
// Transact invokes the (paid) contract method with params as input values.
func (_CheckpointOracle *CheckpointOracleTransactorRaw) Transact(opts *bind.TransactOpts, method string, params ...interface{}) (*types.Transaction, error) {
return _CheckpointOracle.Contract.contract.Transact(opts, method, params...)
}
// GetAllAdmin is a free data retrieval call binding the contract method 0x45848dfc.
//
// Solidity: function GetAllAdmin() constant returns(address[])
func (_CheckpointOracle *CheckpointOracleCaller) GetAllAdmin(opts *bind.CallOpts) ([]common.Address, error) {
var (
ret0 = new([]common.Address)
)
out := ret0
err := _CheckpointOracle.contract.Call(opts, out, "GetAllAdmin")
return *ret0, err
}
// GetAllAdmin is a free data retrieval call binding the contract method 0x45848dfc.
//
// Solidity: function GetAllAdmin() constant returns(address[])
func (_CheckpointOracle *CheckpointOracleSession) GetAllAdmin() ([]common.Address, error) {
return _CheckpointOracle.Contract.GetAllAdmin(&_CheckpointOracle.CallOpts)
}
// GetAllAdmin is a free data retrieval call binding the contract method 0x45848dfc.
//
// Solidity: function GetAllAdmin() constant returns(address[])
func (_CheckpointOracle *CheckpointOracleCallerSession) GetAllAdmin() ([]common.Address, error) {
return _CheckpointOracle.Contract.GetAllAdmin(&_CheckpointOracle.CallOpts)
}
// GetLatestCheckpoint is a free data retrieval call binding the contract method 0x4d6a304c.
//
// Solidity: function GetLatestCheckpoint() constant returns(uint64, bytes32, uint256)
func (_CheckpointOracle *CheckpointOracleCaller) GetLatestCheckpoint(opts *bind.CallOpts) (uint64, [32]byte, *big.Int, error) {
var (
ret0 = new(uint64)
ret1 = new([32]byte)
ret2 = new(*big.Int)
)
out := &[]interface{}{
ret0,
ret1,
ret2,
}
err := _CheckpointOracle.contract.Call(opts, out, "GetLatestCheckpoint")
return *ret0, *ret1, *ret2, err
}
// GetLatestCheckpoint is a free data retrieval call binding the contract method 0x4d6a304c.
//
// Solidity: function GetLatestCheckpoint() constant returns(uint64, bytes32, uint256)
func (_CheckpointOracle *CheckpointOracleSession) GetLatestCheckpoint() (uint64, [32]byte, *big.Int, error) {
return _CheckpointOracle.Contract.GetLatestCheckpoint(&_CheckpointOracle.CallOpts)
}
// GetLatestCheckpoint is a free data retrieval call binding the contract method 0x4d6a304c.
//
// Solidity: function GetLatestCheckpoint() constant returns(uint64, bytes32, uint256)
func (_CheckpointOracle *CheckpointOracleCallerSession) GetLatestCheckpoint() (uint64, [32]byte, *big.Int, error) {
return _CheckpointOracle.Contract.GetLatestCheckpoint(&_CheckpointOracle.CallOpts)
}
// SetCheckpoint is a paid mutator transaction binding the contract method 0xd459fc46.
//
// Solidity: function SetCheckpoint(uint256 _recentNumber, bytes32 _recentHash, bytes32 _hash, uint64 _sectionIndex, uint8[] v, bytes32[] r, bytes32[] s) returns(bool)
func (_CheckpointOracle *CheckpointOracleTransactor) SetCheckpoint(opts *bind.TransactOpts, _recentNumber *big.Int, _recentHash [32]byte, _hash [32]byte, _sectionIndex uint64, v []uint8, r [][32]byte, s [][32]byte) (*types.Transaction, error) {
return _CheckpointOracle.contract.Transact(opts, "SetCheckpoint", _recentNumber, _recentHash, _hash, _sectionIndex, v, r, s)
}
// SetCheckpoint is a paid mutator transaction binding the contract method 0xd459fc46.
//
// Solidity: function SetCheckpoint(uint256 _recentNumber, bytes32 _recentHash, bytes32 _hash, uint64 _sectionIndex, uint8[] v, bytes32[] r, bytes32[] s) returns(bool)
func (_CheckpointOracle *CheckpointOracleSession) SetCheckpoint(_recentNumber *big.Int, _recentHash [32]byte, _hash [32]byte, _sectionIndex uint64, v []uint8, r [][32]byte, s [][32]byte) (*types.Transaction, error) {
return _CheckpointOracle.Contract.SetCheckpoint(&_CheckpointOracle.TransactOpts, _recentNumber, _recentHash, _hash, _sectionIndex, v, r, s)
}
// SetCheckpoint is a paid mutator transaction binding the contract method 0xd459fc46.
//
// Solidity: function SetCheckpoint(uint256 _recentNumber, bytes32 _recentHash, bytes32 _hash, uint64 _sectionIndex, uint8[] v, bytes32[] r, bytes32[] s) returns(bool)
func (_CheckpointOracle *CheckpointOracleTransactorSession) SetCheckpoint(_recentNumber *big.Int, _recentHash [32]byte, _hash [32]byte, _sectionIndex uint64, v []uint8, r [][32]byte, s [][32]byte) (*types.Transaction, error) {
return _CheckpointOracle.Contract.SetCheckpoint(&_CheckpointOracle.TransactOpts, _recentNumber, _recentHash, _hash, _sectionIndex, v, r, s)
}
// CheckpointOracleNewCheckpointVoteIterator is returned from FilterNewCheckpointVote and is used to iterate over the raw logs and unpacked data for NewCheckpointVote events raised by the CheckpointOracle contract.
type CheckpointOracleNewCheckpointVoteIterator struct {
Event *CheckpointOracleNewCheckpointVote // Event containing the contract specifics and raw log
contract *bind.BoundContract // Generic contract to use for unpacking event data
event string // Event name to use for unpacking event data
logs chan types.Log // Log channel receiving the found contract events
sub ethereum.Subscription // Subscription for errors, completion and termination
done bool // Whether the subscription completed delivering logs
fail error // Occurred error to stop iteration
}
// Next advances the iterator to the subsequent event, returning whether there
// are any more events found. In case of a retrieval or parsing error, false is
// returned and Error() can be queried for the exact failure.
func (it *CheckpointOracleNewCheckpointVoteIterator) Next() bool {
// If the iterator failed, stop iterating
if it.fail != nil {
return false
}
// If the iterator completed, deliver directly whatever's available
if it.done {
select {
case log := <-it.logs:
it.Event = new(CheckpointOracleNewCheckpointVote)
if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
it.fail = err
return false
}
it.Event.Raw = log
return true
default:
return false
}
}
// Iterator still in progress, wait for either a data or an error event
select {
case log := <-it.logs:
it.Event = new(CheckpointOracleNewCheckpointVote)
if err := it.contract.UnpackLog(it.Event, it.event, log); err != nil {
it.fail = err
return false
}
it.Event.Raw = log
return true
case err := <-it.sub.Err():
it.done = true
it.fail = err
return it.Next()
}
}
// Error returns any retrieval or parsing error occurred during filtering.
func (it *CheckpointOracleNewCheckpointVoteIterator) Error() error {
return it.fail
}
// Close terminates the iteration process, releasing any pending underlying
// resources.
func (it *CheckpointOracleNewCheckpointVoteIterator) Close() error {
it.sub.Unsubscribe()
return nil
}
// CheckpointOracleNewCheckpointVote represents a NewCheckpointVote event raised by the CheckpointOracle contract.
type CheckpointOracleNewCheckpointVote struct {
Index uint64
CheckpointHash [32]byte
V uint8
R [32]byte
S [32]byte
Raw types.Log // Blockchain specific contextual infos
}
// FilterNewCheckpointVote is a free log retrieval operation binding the contract event 0xce51ffa16246bcaf0899f6504f473cd0114f430f566cef71ab7e03d3dde42a41.
//
// Solidity: event NewCheckpointVote(uint64 indexed index, bytes32 checkpointHash, uint8 v, bytes32 r, bytes32 s)
func (_CheckpointOracle *CheckpointOracleFilterer) FilterNewCheckpointVote(opts *bind.FilterOpts, index []uint64) (*CheckpointOracleNewCheckpointVoteIterator, error) {
var indexRule []interface{}
for _, indexItem := range index {
indexRule = append(indexRule, indexItem)
}
logs, sub, err := _CheckpointOracle.contract.FilterLogs(opts, "NewCheckpointVote", indexRule)
if err != nil {
return nil, err
}
return &CheckpointOracleNewCheckpointVoteIterator{contract: _CheckpointOracle.contract, event: "NewCheckpointVote", logs: logs, sub: sub}, nil
}
// WatchNewCheckpointVote is a free log subscription operation binding the contract event 0xce51ffa16246bcaf0899f6504f473cd0114f430f566cef71ab7e03d3dde42a41.
//
// Solidity: event NewCheckpointVote(uint64 indexed index, bytes32 checkpointHash, uint8 v, bytes32 r, bytes32 s)
func (_CheckpointOracle *CheckpointOracleFilterer) WatchNewCheckpointVote(opts *bind.WatchOpts, sink chan<- *CheckpointOracleNewCheckpointVote, index []uint64) (event.Subscription, error) {
var indexRule []interface{}
for _, indexItem := range index {
indexRule = append(indexRule, indexItem)
}
logs, sub, err := _CheckpointOracle.contract.WatchLogs(opts, "NewCheckpointVote", indexRule)
if err != nil {
return nil, err
}
return event.NewSubscription(func(quit <-chan struct{}) error {
defer sub.Unsubscribe()
for {
select {
case log := <-logs:
// New log arrived, parse the event and forward to the user
event := new(CheckpointOracleNewCheckpointVote)
if err := _CheckpointOracle.contract.UnpackLog(event, "NewCheckpointVote", log); err != nil {
return err
}
event.Raw = log
select {
case sink <- event:
case err := <-sub.Err():
return err
case <-quit:
return nil
}
case err := <-sub.Err():
return err
case <-quit:
return nil
}
}
}), nil
}
// ParseNewCheckpointVote is a log parse operation binding the contract event 0xce51ffa16246bcaf0899f6504f473cd0114f430f566cef71ab7e03d3dde42a41.
//
// Solidity: event NewCheckpointVote(uint64 indexed index, bytes32 checkpointHash, uint8 v, bytes32 r, bytes32 s)
func (_CheckpointOracle *CheckpointOracleFilterer) ParseNewCheckpointVote(log types.Log) (*CheckpointOracleNewCheckpointVote, error) {
event := new(CheckpointOracleNewCheckpointVote)
if err := _CheckpointOracle.contract.UnpackLog(event, "NewCheckpointVote", log); err != nil {
return nil, err
}
return event, nil
}

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pragma solidity ^0.5.10;
/**
* @title CheckpointOracle
* @author Gary Rong<garyrong@ethereum.org>, Martin Swende <martin.swende@ethereum.org>
* @dev Implementation of the blockchain checkpoint registrar.
*/
contract CheckpointOracle {
/*
Events
*/
// NewCheckpointVote is emitted when a new checkpoint proposal receives a vote.
event NewCheckpointVote(uint64 indexed index, bytes32 checkpointHash, uint8 v, bytes32 r, bytes32 s);
/*
Public Functions
*/
constructor(address[] memory _adminlist, uint _sectionSize, uint _processConfirms, uint _threshold) public {
for (uint i = 0; i < _adminlist.length; i++) {
admins[_adminlist[i]] = true;
adminList.push(_adminlist[i]);
}
sectionSize = _sectionSize;
processConfirms = _processConfirms;
threshold = _threshold;
}
/**
* @dev Get latest stable checkpoint information.
* @return section index
* @return checkpoint hash
* @return block height associated with checkpoint
*/
function GetLatestCheckpoint()
view
public
returns(uint64, bytes32, uint) {
return (sectionIndex, hash, height);
}
// SetCheckpoint sets a new checkpoint. It accepts a list of signatures
// @_recentNumber: a recent blocknumber, for replay protection
// @_recentHash : the hash of `_recentNumber`
// @_hash : the hash to set at _sectionIndex
// @_sectionIndex : the section index to set
// @v : the list of v-values
// @r : the list or r-values
// @s : the list of s-values
function SetCheckpoint(
uint _recentNumber,
bytes32 _recentHash,
bytes32 _hash,
uint64 _sectionIndex,
uint8[] memory v,
bytes32[] memory r,
bytes32[] memory s)
public
returns (bool)
{
// Ensure the sender is authorized.
require(admins[msg.sender]);
// These checks replay protection, so it cannot be replayed on forks,
// accidentally or intentionally
require(blockhash(_recentNumber) == _recentHash);
// Ensure the batch of signatures are valid.
require(v.length == r.length);
require(v.length == s.length);
// Filter out "future" checkpoint.
if (block.number < (_sectionIndex+1)*sectionSize+processConfirms) {
return false;
}
// Filter out "old" announcement
if (_sectionIndex < sectionIndex) {
return false;
}
// Filter out "stale" announcement
if (_sectionIndex == sectionIndex && (_sectionIndex != 0 || height != 0)) {
return false;
}
// Filter out "invalid" announcement
if (_hash == ""){
return false;
}
// EIP 191 style signatures
//
// Arguments when calculating hash to validate
// 1: byte(0x19) - the initial 0x19 byte
// 2: byte(0) - the version byte (data with intended validator)
// 3: this - the validator address
// -- Application specific data
// 4 : checkpoint section_index(uint64)
// 5 : checkpoint hash (bytes32)
// hash = keccak256(checkpoint_index, section_head, cht_root, bloom_root)
bytes32 signedHash = keccak256(abi.encodePacked(byte(0x19), byte(0), this, _sectionIndex, _hash));
address lastVoter = address(0);
// In order for us not to have to maintain a mapping of who has already
// voted, and we don't want to count a vote twice, the signatures must
// be submitted in strict ordering.
for (uint idx = 0; idx < v.length; idx++){
address signer = ecrecover(signedHash, v[idx], r[idx], s[idx]);
require(admins[signer]);
require(uint256(signer) > uint256(lastVoter));
lastVoter = signer;
emit NewCheckpointVote(_sectionIndex, _hash, v[idx], r[idx], s[idx]);
// Sufficient signatures present, update latest checkpoint.
if (idx+1 >= threshold){
hash = _hash;
height = block.number;
sectionIndex = _sectionIndex;
return true;
}
}
// We shouldn't wind up here, reverting un-emits the events
revert();
}
/**
* @dev Get all admin addresses
* @return address list
*/
function GetAllAdmin()
public
view
returns(address[] memory)
{
address[] memory ret = new address[](adminList.length);
for (uint i = 0; i < adminList.length; i++) {
ret[i] = adminList[i];
}
return ret;
}
/*
Fields
*/
// A map of admin users who have the permission to update CHT and bloom Trie root
mapping(address => bool) admins;
// A list of admin users so that we can obtain all admin users.
address[] adminList;
// Latest stored section id
uint64 sectionIndex;
// The block height associated with latest registered checkpoint.
uint height;
// The hash of latest registered checkpoint.
bytes32 hash;
// The frequency for creating a checkpoint
//
// The default value should be the same as the checkpoint size(32768) in the ethereum.
uint sectionSize;
// The number of confirmations needed before a checkpoint can be registered.
// We have to make sure the checkpoint registered will not be invalid due to
// chain reorg.
//
// The default value should be the same as the checkpoint process confirmations(256)
// in the ethereum.
uint processConfirms;
// The required signatures to finalize a stable checkpoint.
uint threshold;
}

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// 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 <http://www.gnu.org/licenses/>.
// Package checkpointoracle is a an on-chain light client checkpoint oracle.
package checkpointoracle
//go:generate abigen --sol contract/oracle.sol --pkg contract --out contract/oracle.go
import (
"crypto/ecdsa"
"errors"
"math/big"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/contracts/checkpointoracle/contract"
"github.com/ethereum/go-ethereum/core/types"
)
// CheckpointOracle is a Go wrapper around an on-chain light client checkpoint oracle.
type CheckpointOracle struct {
contract *contract.CheckpointOracle
}
// NewCheckpointOracle binds checkpoint contract and returns a registrar instance.
func NewCheckpointOracle(contractAddr common.Address, backend bind.ContractBackend) (*CheckpointOracle, error) {
c, err := contract.NewCheckpointOracle(contractAddr, backend)
if err != nil {
return nil, err
}
return &CheckpointOracle{contract: c}, nil
}
// Contract returns the underlying contract instance.
func (oracle *CheckpointOracle) Contract() *contract.CheckpointOracle {
return oracle.contract
}
// LookupCheckpointEvents searches checkpoint event for specific section in the
// given log batches.
func (oracle *CheckpointOracle) LookupCheckpointEvents(blockLogs [][]*types.Log, section uint64, hash common.Hash) []*contract.CheckpointOracleNewCheckpointVote {
var votes []*contract.CheckpointOracleNewCheckpointVote
for _, logs := range blockLogs {
for _, log := range logs {
event, err := oracle.contract.ParseNewCheckpointVote(*log)
if err != nil {
continue
}
if event.Index == section && common.Hash(event.CheckpointHash) == hash {
votes = append(votes, event)
}
}
}
return votes
}
// RegisterCheckpoint registers the checkpoint with a batch of associated signatures
// that are collected off-chain and sorted by lexicographical order.
//
// Notably all signatures given should be transformed to "ethereum style" which transforms
// v from 0/1 to 27/28 according to the yellow paper.
func (oracle *CheckpointOracle) RegisterCheckpoint(key *ecdsa.PrivateKey, index uint64, hash []byte, rnum *big.Int, rhash [32]byte, sigs [][]byte) (*types.Transaction, error) {
var (
r [][32]byte
s [][32]byte
v []uint8
)
for i := 0; i < len(sigs); i++ {
if len(sigs[i]) != 65 {
return nil, errors.New("invalid signature")
}
r = append(r, common.BytesToHash(sigs[i][:32]))
s = append(s, common.BytesToHash(sigs[i][32:64]))
v = append(v, sigs[i][64])
}
return oracle.contract.SetCheckpoint(bind.NewKeyedTransactor(key), rnum, rhash, common.BytesToHash(hash), index, v, r, s)
}

333
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// 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 <http://www.gnu.org/licenses/>.
package checkpointoracle
import (
"bytes"
"crypto/ecdsa"
"encoding/binary"
"errors"
"math/big"
"reflect"
"sort"
"testing"
"time"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/contracts/checkpointoracle/contract"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/params"
)
var (
emptyHash = [32]byte{}
checkpoint0 = params.TrustedCheckpoint{
SectionIndex: 0,
SectionHead: common.HexToHash("0x7fa3c32f996c2bfb41a1a65b3d8ea3e0a33a1674cde43678ad6f4235e764d17d"),
CHTRoot: common.HexToHash("0x98fc5d3de23a0fecebad236f6655533c157d26a1aedcd0852a514dc1169e6350"),
BloomRoot: common.HexToHash("0x99b5adb52b337fe25e74c1c6d3835b896bd638611b3aebddb2317cce27a3f9fa"),
}
checkpoint1 = params.TrustedCheckpoint{
SectionIndex: 1,
SectionHead: common.HexToHash("0x2d4dee68102125e59b0cc61b176bd89f0d12b3b91cfaf52ef8c2c82fb920c2d2"),
CHTRoot: common.HexToHash("0x7d428008ece3b4c4ef5439f071930aad0bb75108d381308df73beadcd01ded95"),
BloomRoot: common.HexToHash("0x652571f7736de17e7bbb427ac881474da684c6988a88bf51b10cca9a2ee148f4"),
}
checkpoint2 = params.TrustedCheckpoint{
SectionIndex: 2,
SectionHead: common.HexToHash("0x61c0de578c0115b1dff8ef39aa600588c7c6ecb8a2f102003d7cf4c4146e9291"),
CHTRoot: common.HexToHash("0x407a08a407a2bc3838b74ca3eb206903c9c8a186ccf5ef14af07794efff1970b"),
BloomRoot: common.HexToHash("0x058b4161f558ce295a92925efc57f34f9210d5a30088d7475c183e0d3e58f5ac"),
}
)
var (
// The block frequency for creating checkpoint(only used in test)
sectionSize = big.NewInt(512)
// The number of confirmations needed to generate a checkpoint(only used in test).
processConfirms = big.NewInt(4)
)
// validateOperation executes the operation, watches and delivers all events fired by the backend and ensures the
// correctness by assert function.
func validateOperation(t *testing.T, c *contract.CheckpointOracle, backend *backends.SimulatedBackend, operation func(),
assert func(<-chan *contract.CheckpointOracleNewCheckpointVote) error, opName string) {
// Watch all events and deliver them to assert function
var (
sink = make(chan *contract.CheckpointOracleNewCheckpointVote)
sub, _ = c.WatchNewCheckpointVote(nil, sink, nil)
)
defer func() {
// Close all subscribers
sub.Unsubscribe()
}()
operation()
// flush pending block
backend.Commit()
if err := assert(sink); err != nil {
t.Errorf("operation {%s} failed, err %s", opName, err)
}
}
// validateEvents checks that the correct number of contract events
// fired by contract backend.
func validateEvents(target int, sink interface{}) (bool, []reflect.Value) {
chanval := reflect.ValueOf(sink)
chantyp := chanval.Type()
if chantyp.Kind() != reflect.Chan || chantyp.ChanDir()&reflect.RecvDir == 0 {
return false, nil
}
count := 0
var recv []reflect.Value
timeout := time.After(1 * time.Second)
cases := []reflect.SelectCase{{Chan: chanval, Dir: reflect.SelectRecv}, {Chan: reflect.ValueOf(timeout), Dir: reflect.SelectRecv}}
for {
chose, v, _ := reflect.Select(cases)
if chose == 1 {
// Not enough event received
return false, nil
}
count += 1
recv = append(recv, v)
if count == target {
break
}
}
done := time.After(50 * time.Millisecond)
cases = cases[:1]
cases = append(cases, reflect.SelectCase{Chan: reflect.ValueOf(done), Dir: reflect.SelectRecv})
chose, _, _ := reflect.Select(cases)
// If chose equal 0, it means receiving redundant events.
return chose == 1, recv
}
func signCheckpoint(addr common.Address, privateKey *ecdsa.PrivateKey, index uint64, hash common.Hash) []byte {
// EIP 191 style signatures
//
// Arguments when calculating hash to validate
// 1: byte(0x19) - the initial 0x19 byte
// 2: byte(0) - the version byte (data with intended validator)
// 3: this - the validator address
// -- Application specific data
// 4 : checkpoint section_index(uint64)
// 5 : checkpoint hash (bytes32)
// hash = keccak256(checkpoint_index, section_head, cht_root, bloom_root)
buf := make([]byte, 8)
binary.BigEndian.PutUint64(buf, index)
data := append([]byte{0x19, 0x00}, append(addr.Bytes(), append(buf, hash.Bytes()...)...)...)
sig, _ := crypto.Sign(crypto.Keccak256(data), privateKey)
sig[64] += 27 // Transform V from 0/1 to 27/28 according to the yellow paper
return sig
}
// assertSignature verifies whether the recovered signers are equal with expected.
func assertSignature(addr common.Address, index uint64, hash [32]byte, r, s [32]byte, v uint8, expect common.Address) bool {
buf := make([]byte, 8)
binary.BigEndian.PutUint64(buf, index)
data := append([]byte{0x19, 0x00}, append(addr.Bytes(), append(buf, hash[:]...)...)...)
pubkey, err := crypto.Ecrecover(crypto.Keccak256(data), append(r[:], append(s[:], v-27)...))
if err != nil {
return false
}
var signer common.Address
copy(signer[:], crypto.Keccak256(pubkey[1:])[12:])
return bytes.Equal(signer.Bytes(), expect.Bytes())
}
type Account struct {
key *ecdsa.PrivateKey
addr common.Address
}
type Accounts []Account
func (a Accounts) Len() int { return len(a) }
func (a Accounts) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
func (a Accounts) Less(i, j int) bool { return bytes.Compare(a[i].addr.Bytes(), a[j].addr.Bytes()) < 0 }
func TestCheckpointRegister(t *testing.T) {
// Initialize test accounts
var accounts Accounts
for i := 0; i < 3; i++ {
key, _ := crypto.GenerateKey()
addr := crypto.PubkeyToAddress(key.PublicKey)
accounts = append(accounts, Account{key: key, addr: addr})
}
sort.Sort(accounts)
// Deploy registrar contract
transactOpts := bind.NewKeyedTransactor(accounts[0].key)
contractBackend := backends.NewSimulatedBackend(core.GenesisAlloc{accounts[0].addr: {Balance: big.NewInt(1000000000)}, accounts[1].addr: {Balance: big.NewInt(1000000000)}, accounts[2].addr: {Balance: big.NewInt(1000000000)}}, 10000000)
// 3 trusted signers, threshold 2
contractAddr, _, c, err := contract.DeployCheckpointOracle(transactOpts, contractBackend, []common.Address{accounts[0].addr, accounts[1].addr, accounts[2].addr}, sectionSize, processConfirms, big.NewInt(2))
if err != nil {
t.Error("Failed to deploy registrar contract", err)
}
contractBackend.Commit()
// getRecent returns block height and hash of the head parent.
getRecent := func() (*big.Int, common.Hash) {
parentNumber := new(big.Int).Sub(contractBackend.Blockchain().CurrentHeader().Number, big.NewInt(1))
parentHash := contractBackend.Blockchain().CurrentHeader().ParentHash
return parentNumber, parentHash
}
// collectSig generates specified number signatures.
collectSig := func(index uint64, hash common.Hash, n int, unauthorized *ecdsa.PrivateKey) (v []uint8, r [][32]byte, s [][32]byte) {
for i := 0; i < n; i++ {
sig := signCheckpoint(contractAddr, accounts[i].key, index, hash)
if unauthorized != nil {
sig = signCheckpoint(contractAddr, unauthorized, index, hash)
}
r = append(r, common.BytesToHash(sig[:32]))
s = append(s, common.BytesToHash(sig[32:64]))
v = append(v, sig[64])
}
return v, r, s
}
// insertEmptyBlocks inserts a batch of empty blocks to blockchain.
insertEmptyBlocks := func(number int) {
for i := 0; i < number; i++ {
contractBackend.Commit()
}
}
// assert checks whether the current contract status is same with
// the expected.
assert := func(index uint64, hash [32]byte, height *big.Int) error {
lindex, lhash, lheight, err := c.GetLatestCheckpoint(nil)
if err != nil {
return err
}
if lindex != index {
return errors.New("latest checkpoint index mismatch")
}
if !bytes.Equal(lhash[:], hash[:]) {
return errors.New("latest checkpoint hash mismatch")
}
if lheight.Cmp(height) != 0 {
return errors.New("latest checkpoint height mismatch")
}
return nil
}
// Test future checkpoint registration
validateOperation(t, c, contractBackend, func() {
number, hash := getRecent()
v, r, s := collectSig(0, checkpoint0.Hash(), 2, nil)
c.SetCheckpoint(transactOpts, number, hash, checkpoint0.Hash(), 0, v, r, s)
}, func(events <-chan *contract.CheckpointOracleNewCheckpointVote) error {
return assert(0, emptyHash, big.NewInt(0))
}, "test future checkpoint registration")
insertEmptyBlocks(int(sectionSize.Uint64() + processConfirms.Uint64()))
// Test transaction replay protection
validateOperation(t, c, contractBackend, func() {
number, hash := getRecent()
v, r, s := collectSig(0, checkpoint0.Hash(), 2, nil)
hash = common.HexToHash("deadbeef")
c.SetCheckpoint(transactOpts, number, hash, checkpoint0.Hash(), 0, v, r, s)
}, func(events <-chan *contract.CheckpointOracleNewCheckpointVote) error {
return assert(0, emptyHash, big.NewInt(0))
}, "test transaction replay protection")
// Test unauthorized signature checking
validateOperation(t, c, contractBackend, func() {
number, hash := getRecent()
u, _ := crypto.GenerateKey()
v, r, s := collectSig(0, checkpoint0.Hash(), 2, u)
c.SetCheckpoint(transactOpts, number, hash, checkpoint0.Hash(), 0, v, r, s)
}, func(events <-chan *contract.CheckpointOracleNewCheckpointVote) error {
return assert(0, emptyHash, big.NewInt(0))
}, "test unauthorized signature checking")
// Test un-multi-signature checkpoint registration
validateOperation(t, c, contractBackend, func() {
number, hash := getRecent()
v, r, s := collectSig(0, checkpoint0.Hash(), 1, nil)
c.SetCheckpoint(transactOpts, number, hash, checkpoint0.Hash(), 0, v, r, s)
}, func(events <-chan *contract.CheckpointOracleNewCheckpointVote) error {
return assert(0, emptyHash, big.NewInt(0))
}, "test un-multi-signature checkpoint registration")
// Test valid checkpoint registration
validateOperation(t, c, contractBackend, func() {
number, hash := getRecent()
v, r, s := collectSig(0, checkpoint0.Hash(), 2, nil)
c.SetCheckpoint(transactOpts, number, hash, checkpoint0.Hash(), 0, v, r, s)
}, func(events <-chan *contract.CheckpointOracleNewCheckpointVote) error {
if valid, recv := validateEvents(2, events); !valid {
return errors.New("receive incorrect number of events")
} else {
for i := 0; i < len(recv); i++ {
event := recv[i].Interface().(*contract.CheckpointOracleNewCheckpointVote)
if !assertSignature(contractAddr, event.Index, event.CheckpointHash, event.R, event.S, event.V, accounts[i].addr) {
return errors.New("recover signer failed")
}
}
}
number, _ := getRecent()
return assert(0, checkpoint0.Hash(), number.Add(number, big.NewInt(1)))
}, "test valid checkpoint registration")
distance := 3*sectionSize.Uint64() + processConfirms.Uint64() - contractBackend.Blockchain().CurrentHeader().Number.Uint64()
insertEmptyBlocks(int(distance))
// Test uncontinuous checkpoint registration
validateOperation(t, c, contractBackend, func() {
number, hash := getRecent()
v, r, s := collectSig(2, checkpoint2.Hash(), 2, nil)
c.SetCheckpoint(transactOpts, number, hash, checkpoint2.Hash(), 2, v, r, s)
}, func(events <-chan *contract.CheckpointOracleNewCheckpointVote) error {
if valid, recv := validateEvents(2, events); !valid {
return errors.New("receive incorrect number of events")
} else {
for i := 0; i < len(recv); i++ {
event := recv[i].Interface().(*contract.CheckpointOracleNewCheckpointVote)
if !assertSignature(contractAddr, event.Index, event.CheckpointHash, event.R, event.S, event.V, accounts[i].addr) {
return errors.New("recover signer failed")
}
}
}
number, _ := getRecent()
return assert(2, checkpoint2.Hash(), number.Add(number, big.NewInt(1)))
}, "test uncontinuous checkpoint registration")
// Test old checkpoint registration
validateOperation(t, c, contractBackend, func() {
number, hash := getRecent()
v, r, s := collectSig(1, checkpoint1.Hash(), 2, nil)
c.SetCheckpoint(transactOpts, number, hash, checkpoint1.Hash(), 1, v, r, s)
}, func(events <-chan *contract.CheckpointOracleNewCheckpointVote) error {
number, _ := getRecent()
return assert(2, checkpoint2.Hash(), number)
}, "test uncontinuous checkpoint registration")
// Test stale checkpoint registration
validateOperation(t, c, contractBackend, func() {
number, hash := getRecent()
v, r, s := collectSig(2, checkpoint2.Hash(), 2, nil)
c.SetCheckpoint(transactOpts, number, hash, checkpoint2.Hash(), 2, v, r, s)
}, func(events <-chan *contract.CheckpointOracleNewCheckpointVote) error {
number, _ := getRecent()
return assert(2, checkpoint2.Hash(), number.Sub(number, big.NewInt(1)))
}, "test stale checkpoint registration")
}

7
core/chain_indexer.go
View File

@ -128,12 +128,13 @@ func (c *ChainIndexer) AddCheckpoint(section uint64, shead common.Hash) {
c.lock.Lock() c.lock.Lock()
defer c.lock.Unlock() defer c.lock.Unlock()
// Short circuit if the given checkpoint is below than local's.
if c.checkpointSections >= section+1 || section < c.storedSections {
return
}
c.checkpointSections = section + 1 c.checkpointSections = section + 1
c.checkpointHead = shead c.checkpointHead = shead
if section < c.storedSections {
return
}
c.setSectionHead(section, shead) c.setSectionHead(section, shead)
c.setValidSections(section + 1) c.setValidSections(section + 1)
} }

21
eth/backend.go
View File

@ -26,6 +26,7 @@ import (
"sync/atomic" "sync/atomic"
"github.com/ethereum/go-ethereum/accounts" "github.com/ethereum/go-ethereum/accounts"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil" "github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/consensus" "github.com/ethereum/go-ethereum/consensus"
@ -57,6 +58,7 @@ type LesServer interface {
APIs() []rpc.API APIs() []rpc.API
Protocols() []p2p.Protocol Protocols() []p2p.Protocol
SetBloomBitsIndexer(bbIndexer *core.ChainIndexer) SetBloomBitsIndexer(bbIndexer *core.ChainIndexer)
SetContractBackend(bind.ContractBackend)
} }
// Ethereum implements the Ethereum full node service. // Ethereum implements the Ethereum full node service.
@ -99,6 +101,14 @@ func (s *Ethereum) AddLesServer(ls LesServer) {
ls.SetBloomBitsIndexer(s.bloomIndexer) ls.SetBloomBitsIndexer(s.bloomIndexer)
} }
// SetClient sets a rpc client which connecting to our local node.
func (s *Ethereum) SetContractBackend(backend bind.ContractBackend) {
// Pass the rpc client to les server if it is enabled.
if s.lesServer != nil {
s.lesServer.SetContractBackend(backend)
}
}
// New creates a new Ethereum object (including the // New creates a new Ethereum object (including the
// initialisation of the common Ethereum object) // initialisation of the common Ethereum object)
func New(ctx *node.ServiceContext, config *Config) (*Ethereum, error) { func New(ctx *node.ServiceContext, config *Config) (*Ethereum, error) {
@ -192,7 +202,11 @@ func New(ctx *node.ServiceContext, config *Config) (*Ethereum, error) {
// Permit the downloader to use the trie cache allowance during fast sync // Permit the downloader to use the trie cache allowance during fast sync
cacheLimit := cacheConfig.TrieCleanLimit + cacheConfig.TrieDirtyLimit cacheLimit := cacheConfig.TrieCleanLimit + cacheConfig.TrieDirtyLimit
if eth.protocolManager, err = NewProtocolManager(chainConfig, config.SyncMode, config.NetworkId, eth.eventMux, eth.txPool, eth.engine, eth.blockchain, chainDb, cacheLimit, config.Whitelist); err != nil { checkpoint := config.Checkpoint
if checkpoint == nil {
checkpoint = params.TrustedCheckpoints[genesisHash]
}
if eth.protocolManager, err = NewProtocolManager(chainConfig, checkpoint, config.SyncMode, config.NetworkId, eth.eventMux, eth.txPool, eth.engine, eth.blockchain, chainDb, cacheLimit, config.Whitelist); err != nil {
return nil, err return nil, err
} }
eth.miner = miner.New(eth, &config.Miner, chainConfig, eth.EventMux(), eth.engine, eth.isLocalBlock) eth.miner = miner.New(eth, &config.Miner, chainConfig, eth.EventMux(), eth.engine, eth.isLocalBlock)
@ -268,6 +282,11 @@ func (s *Ethereum) APIs() []rpc.API {
// Append any APIs exposed explicitly by the consensus engine // Append any APIs exposed explicitly by the consensus engine
apis = append(apis, s.engine.APIs(s.BlockChain())...) apis = append(apis, s.engine.APIs(s.BlockChain())...)
// Append any APIs exposed explicitly by the les server
if s.lesServer != nil {
apis = append(apis, s.lesServer.APIs()...)
}
// Append all the local APIs and return // Append all the local APIs and return
return append(apis, []rpc.API{ return append(apis, []rpc.API{
{ {

6
eth/config.go
View File

@ -149,4 +149,10 @@ type Config struct {
// RPCGasCap is the global gas cap for eth-call variants. // RPCGasCap is the global gas cap for eth-call variants.
RPCGasCap *big.Int `toml:",omitempty"` RPCGasCap *big.Int `toml:",omitempty"`
// Checkpoint is a hardcoded checkpoint which can be nil.
Checkpoint *params.TrustedCheckpoint
// CheckpointOracle is the configuration for checkpoint oracle.
CheckpointOracle *params.CheckpointOracleConfig
} }

19
eth/gen_config.go
View File

@ -12,6 +12,7 @@ import (
"github.com/ethereum/go-ethereum/eth/downloader" "github.com/ethereum/go-ethereum/eth/downloader"
"github.com/ethereum/go-ethereum/eth/gasprice" "github.com/ethereum/go-ethereum/eth/gasprice"
"github.com/ethereum/go-ethereum/miner" "github.com/ethereum/go-ethereum/miner"
"github.com/ethereum/go-ethereum/params"
) )
// MarshalTOML marshals as TOML. // MarshalTOML marshals as TOML.
@ -32,6 +33,7 @@ func (c Config) MarshalTOML() (interface{}, error) {
SkipBcVersionCheck bool `toml:"-"` SkipBcVersionCheck bool `toml:"-"`
DatabaseHandles int `toml:"-"` DatabaseHandles int `toml:"-"`
DatabaseCache int DatabaseCache int
DatabaseFreezer string
TrieCleanCache int TrieCleanCache int
TrieDirtyCache int TrieDirtyCache int
TrieTimeout time.Duration TrieTimeout time.Duration
@ -45,6 +47,8 @@ func (c Config) MarshalTOML() (interface{}, error) {
EVMInterpreter string EVMInterpreter string
ConstantinopleOverride *big.Int ConstantinopleOverride *big.Int
RPCGasCap *big.Int `toml:",omitempty"` RPCGasCap *big.Int `toml:",omitempty"`
Checkpoint *params.TrustedCheckpoint
CheckpointOracle *params.CheckpointOracleConfig
} }
var enc Config var enc Config
enc.Genesis = c.Genesis enc.Genesis = c.Genesis
@ -62,6 +66,7 @@ func (c Config) MarshalTOML() (interface{}, error) {
enc.SkipBcVersionCheck = c.SkipBcVersionCheck enc.SkipBcVersionCheck = c.SkipBcVersionCheck
enc.DatabaseHandles = c.DatabaseHandles enc.DatabaseHandles = c.DatabaseHandles
enc.DatabaseCache = c.DatabaseCache enc.DatabaseCache = c.DatabaseCache
enc.DatabaseFreezer = c.DatabaseFreezer
enc.TrieCleanCache = c.TrieCleanCache enc.TrieCleanCache = c.TrieCleanCache
enc.TrieDirtyCache = c.TrieDirtyCache enc.TrieDirtyCache = c.TrieDirtyCache
enc.TrieTimeout = c.TrieTimeout enc.TrieTimeout = c.TrieTimeout
@ -75,6 +80,8 @@ func (c Config) MarshalTOML() (interface{}, error) {
enc.EVMInterpreter = c.EVMInterpreter enc.EVMInterpreter = c.EVMInterpreter
enc.ConstantinopleOverride = c.ConstantinopleOverride enc.ConstantinopleOverride = c.ConstantinopleOverride
enc.RPCGasCap = c.RPCGasCap enc.RPCGasCap = c.RPCGasCap
enc.Checkpoint = c.Checkpoint
enc.CheckpointOracle = c.CheckpointOracle
return &enc, nil return &enc, nil
} }
@ -96,6 +103,7 @@ func (c *Config) UnmarshalTOML(unmarshal func(interface{}) error) error {
SkipBcVersionCheck *bool `toml:"-"` SkipBcVersionCheck *bool `toml:"-"`
DatabaseHandles *int `toml:"-"` DatabaseHandles *int `toml:"-"`
DatabaseCache *int DatabaseCache *int
DatabaseFreezer *string
TrieCleanCache *int TrieCleanCache *int
TrieDirtyCache *int TrieDirtyCache *int
TrieTimeout *time.Duration TrieTimeout *time.Duration
@ -109,6 +117,8 @@ func (c *Config) UnmarshalTOML(unmarshal func(interface{}) error) error {
EVMInterpreter *string EVMInterpreter *string
ConstantinopleOverride *big.Int ConstantinopleOverride *big.Int
RPCGasCap *big.Int `toml:",omitempty"` RPCGasCap *big.Int `toml:",omitempty"`
Checkpoint *params.TrustedCheckpoint
CheckpointOracle *params.CheckpointOracleConfig
} }
var dec Config var dec Config
if err := unmarshal(&dec); err != nil { if err := unmarshal(&dec); err != nil {
@ -159,6 +169,9 @@ func (c *Config) UnmarshalTOML(unmarshal func(interface{}) error) error {
if dec.DatabaseCache != nil { if dec.DatabaseCache != nil {
c.DatabaseCache = *dec.DatabaseCache c.DatabaseCache = *dec.DatabaseCache
} }
if dec.DatabaseFreezer != nil {
c.DatabaseFreezer = *dec.DatabaseFreezer
}
if dec.TrieCleanCache != nil { if dec.TrieCleanCache != nil {
c.TrieCleanCache = *dec.TrieCleanCache c.TrieCleanCache = *dec.TrieCleanCache
} }
@ -198,5 +211,11 @@ func (c *Config) UnmarshalTOML(unmarshal func(interface{}) error) error {
if dec.RPCGasCap != nil { if dec.RPCGasCap != nil {
c.RPCGasCap = dec.RPCGasCap c.RPCGasCap = dec.RPCGasCap
} }
if dec.Checkpoint != nil {
c.Checkpoint = dec.Checkpoint
}
if dec.CheckpointOracle != nil {
c.CheckpointOracle = dec.CheckpointOracle
}
return nil return nil
} }

4
eth/handler.go
View File

@ -106,7 +106,7 @@ type ProtocolManager struct {
// NewProtocolManager returns a new Ethereum sub protocol manager. The Ethereum sub protocol manages peers capable // NewProtocolManager returns a new Ethereum sub protocol manager. The Ethereum sub protocol manages peers capable
// with the Ethereum network. // with the Ethereum network.
func NewProtocolManager(config *params.ChainConfig, mode downloader.SyncMode, networkID uint64, mux *event.TypeMux, txpool txPool, engine consensus.Engine, blockchain *core.BlockChain, chaindb ethdb.Database, cacheLimit int, whitelist map[uint64]common.Hash) (*ProtocolManager, error) { func NewProtocolManager(config *params.ChainConfig, checkpoint *params.TrustedCheckpoint, mode downloader.SyncMode, networkID uint64, mux *event.TypeMux, txpool txPool, engine consensus.Engine, blockchain *core.BlockChain, chaindb ethdb.Database, cacheLimit int, whitelist map[uint64]common.Hash) (*ProtocolManager, error) {
// Create the protocol manager with the base fields // Create the protocol manager with the base fields
manager := &ProtocolManager{ manager := &ProtocolManager{
networkID: networkID, networkID: networkID,
@ -145,7 +145,7 @@ func NewProtocolManager(config *params.ChainConfig, mode downloader.SyncMode, ne
} }
} }
// If we have trusted checkpoints, enforce them on the chain // If we have trusted checkpoints, enforce them on the chain
if checkpoint, ok := params.TrustedCheckpoints[blockchain.Genesis().Hash()]; ok { if checkpoint != nil {
manager.checkpointNumber = (checkpoint.SectionIndex+1)*params.CHTFrequency - 1 manager.checkpointNumber = (checkpoint.SectionIndex+1)*params.CHTFrequency - 1
manager.checkpointHash = checkpoint.SectionHead manager.checkpointHash = checkpoint.SectionHead
} }

15
eth/handler_test.go
View File

@ -499,31 +499,30 @@ func testCheckpointChallenge(t *testing.T, syncmode downloader.SyncMode, checkpo
// Initialize a chain and generate a fake CHT if checkpointing is enabled // Initialize a chain and generate a fake CHT if checkpointing is enabled
var ( var (
db = rawdb.NewMemoryDatabase() db = rawdb.NewMemoryDatabase()
config = new(params.ChainConfig) config = new(params.ChainConfig)
genesis = (&core.Genesis{Config: config}).MustCommit(db)
) )
(&core.Genesis{Config: config}).MustCommit(db) // Commit genesis block
// If checkpointing is enabled, create and inject a fake CHT and the corresponding // If checkpointing is enabled, create and inject a fake CHT and the corresponding
// chllenge response. // chllenge response.
var response *types.Header var response *types.Header
var cht *params.TrustedCheckpoint
if checkpoint { if checkpoint {
index := uint64(rand.Intn(500)) index := uint64(rand.Intn(500))
number := (index+1)*params.CHTFrequency - 1 number := (index+1)*params.CHTFrequency - 1
response = &types.Header{Number: big.NewInt(int64(number)), Extra: []byte("valid")} response = &types.Header{Number: big.NewInt(int64(number)), Extra: []byte("valid")}
cht := &params.TrustedCheckpoint{ cht = &params.TrustedCheckpoint{
SectionIndex: index, SectionIndex: index,
SectionHead: response.Hash(), SectionHead: response.Hash(),
} }
params.TrustedCheckpoints[genesis.Hash()] = cht
defer delete(params.TrustedCheckpoints, genesis.Hash())
} }
// Create a checkpoint aware protocol manager // Create a checkpoint aware protocol manager
blockchain, err := core.NewBlockChain(db, nil, config, ethash.NewFaker(), vm.Config{}, nil) blockchain, err := core.NewBlockChain(db, nil, config, ethash.NewFaker(), vm.Config{}, nil)
if err != nil { if err != nil {
t.Fatalf("failed to create new blockchain: %v", err) t.Fatalf("failed to create new blockchain: %v", err)
} }
pm, err := NewProtocolManager(config, syncmode, DefaultConfig.NetworkId, new(event.TypeMux), new(testTxPool), ethash.NewFaker(), blockchain, db, 1, nil) pm, err := NewProtocolManager(config, cht, syncmode, DefaultConfig.NetworkId, new(event.TypeMux), new(testTxPool), ethash.NewFaker(), blockchain, db, 1, nil)
if err != nil { if err != nil {
t.Fatalf("failed to start test protocol manager: %v", err) t.Fatalf("failed to start test protocol manager: %v", err)
} }
@ -610,7 +609,7 @@ func testBroadcastBlock(t *testing.T, totalPeers, broadcastExpected int) {
if err != nil { if err != nil {
t.Fatalf("failed to create new blockchain: %v", err) t.Fatalf("failed to create new blockchain: %v", err)
} }
pm, err := NewProtocolManager(config, downloader.FullSync, DefaultConfig.NetworkId, evmux, new(testTxPool), pow, blockchain, db, 1, nil) pm, err := NewProtocolManager(config, nil, downloader.FullSync, DefaultConfig.NetworkId, evmux, new(testTxPool), pow, blockchain, db, 1, nil)
if err != nil { if err != nil {
t.Fatalf("failed to start test protocol manager: %v", err) t.Fatalf("failed to start test protocol manager: %v", err)
} }

2
eth/helper_test.go
View File

@ -66,7 +66,7 @@ func newTestProtocolManager(mode downloader.SyncMode, blocks int, generator func
if _, err := blockchain.InsertChain(chain); err != nil { if _, err := blockchain.InsertChain(chain); err != nil {
panic(err) panic(err)
} }
pm, err := NewProtocolManager(gspec.Config, mode, DefaultConfig.NetworkId, evmux, &testTxPool{added: newtx}, engine, blockchain, db, 1, nil) pm, err := NewProtocolManager(gspec.Config, nil, mode, DefaultConfig.NetworkId, evmux, &testTxPool{added: newtx}, engine, blockchain, db, 1, nil)
if err != nil { if err != nil {
return nil, nil, err return nil, nil, err
} }

26
internal/web3ext/web3ext.go
View File

@ -32,6 +32,7 @@ var Modules = map[string]string{
"shh": ShhJs, "shh": ShhJs,
"swarmfs": SwarmfsJs, "swarmfs": SwarmfsJs,
"txpool": TxpoolJs, "txpool": TxpoolJs,
"les": LESJs,
} }
const ChequebookJs = ` const ChequebookJs = `
@ -760,3 +761,28 @@ web3._extend({
] ]
}); });
` `
const LESJs = `
web3._extend({
property: 'les',
methods:
[
new web3._extend.Method({
name: 'getCheckpoint',
call: 'les_getCheckpoint',
params: 1
}),
],
properties:
[
new web3._extend.Property({
name: 'latestCheckpoint',
getter: 'les_latestCheckpoint'
}),
new web3._extend.Property({
name: 'checkpointContractAddress',
getter: 'les_getCheckpointContractAddress'
}),
]
});
`

58
les/api.go
View File

@ -34,6 +34,8 @@ var (
ErrMinCap = errors.New("capacity too small") ErrMinCap = errors.New("capacity too small")
ErrTotalCap = errors.New("total capacity exceeded") ErrTotalCap = errors.New("total capacity exceeded")
ErrUnknownBenchmarkType = errors.New("unknown benchmark type") ErrUnknownBenchmarkType = errors.New("unknown benchmark type")
ErrNoCheckpoint = errors.New("no local checkpoint provided")
ErrNotActivated = errors.New("checkpoint registrar is not activated")
dropCapacityDelay = time.Second // delay applied to decreasing capacity changes dropCapacityDelay = time.Second // delay applied to decreasing capacity changes
) )
@ -470,3 +472,59 @@ func (api *PrivateLightServerAPI) Benchmark(setups []map[string]interface{}, pas
} }
return result, nil return result, nil
} }
// PrivateLightAPI provides an API to access the LES light server or light client.
type PrivateLightAPI struct {
backend *lesCommons
reg *checkpointOracle
}
// NewPrivateLightAPI creates a new LES service API.
func NewPrivateLightAPI(backend *lesCommons, reg *checkpointOracle) *PrivateLightAPI {
return &PrivateLightAPI{
backend: backend,
reg: reg,
}
}
// LatestCheckpoint returns the latest local checkpoint package.
//
// The checkpoint package consists of 4 strings:
// result[0], hex encoded latest section index
// result[1], 32 bytes hex encoded latest section head hash
// result[2], 32 bytes hex encoded latest section canonical hash trie root hash
// result[3], 32 bytes hex encoded latest section bloom trie root hash
func (api *PrivateLightAPI) LatestCheckpoint() ([4]string, error) {
var res [4]string
cp := api.backend.latestLocalCheckpoint()
if cp.Empty() {
return res, ErrNoCheckpoint
}
res[0] = hexutil.EncodeUint64(cp.SectionIndex)
res[1], res[2], res[3] = cp.SectionHead.Hex(), cp.CHTRoot.Hex(), cp.BloomRoot.Hex()
return res, nil
}
// GetLocalCheckpoint returns the specific local checkpoint package.
//
// The checkpoint package consists of 3 strings:
// result[0], 32 bytes hex encoded latest section head hash
// result[1], 32 bytes hex encoded latest section canonical hash trie root hash
// result[2], 32 bytes hex encoded latest section bloom trie root hash
func (api *PrivateLightAPI) GetCheckpoint(index uint64) ([3]string, error) {
var res [3]string
cp := api.backend.getLocalCheckpoint(index)
if cp.Empty() {
return res, ErrNoCheckpoint
}
res[0], res[1], res[2] = cp.SectionHead.Hex(), cp.CHTRoot.Hex(), cp.BloomRoot.Hex()
return res, nil
}
// GetCheckpointContractAddress returns the contract contract address in hex format.
func (api *PrivateLightAPI) GetCheckpointContractAddress() (string, error) {
if api.reg == nil {
return "", ErrNotActivated
}
return api.reg.config.Address.Hex(), nil
}

66
les/backend.go
View File

@ -23,6 +23,7 @@ import (
"time" "time"
"github.com/ethereum/go-ethereum/accounts" "github.com/ethereum/go-ethereum/accounts"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/hexutil" "github.com/ethereum/go-ethereum/common/hexutil"
"github.com/ethereum/go-ethereum/common/mclock" "github.com/ethereum/go-ethereum/common/mclock"
@ -43,14 +44,13 @@ import (
"github.com/ethereum/go-ethereum/p2p" "github.com/ethereum/go-ethereum/p2p"
"github.com/ethereum/go-ethereum/p2p/discv5" "github.com/ethereum/go-ethereum/p2p/discv5"
"github.com/ethereum/go-ethereum/params" "github.com/ethereum/go-ethereum/params"
rpc "github.com/ethereum/go-ethereum/rpc" "github.com/ethereum/go-ethereum/rpc"
) )
type LightEthereum struct { type LightEthereum struct {
lesCommons lesCommons
odr *LesOdr odr *LesOdr
relay *LesTxRelay
chainConfig *params.ChainConfig chainConfig *params.ChainConfig
// Channel for shutting down the service // Channel for shutting down the service
shutdownChan chan bool shutdownChan chan bool
@ -62,6 +62,7 @@ type LightEthereum struct {
serverPool *serverPool serverPool *serverPool
reqDist *requestDistributor reqDist *requestDistributor
retriever *retrieveManager retriever *retrieveManager
relay *lesTxRelay
bloomRequests chan chan *bloombits.Retrieval // Channel receiving bloom data retrieval requests bloomRequests chan chan *bloombits.Retrieval // Channel receiving bloom data retrieval requests
bloomIndexer *core.ChainIndexer bloomIndexer *core.ChainIndexer
@ -116,16 +117,20 @@ func New(ctx *node.ServiceContext, config *eth.Config) (*LightEthereum, error) {
} }
leth.serverPool = newServerPool(chainDb, quitSync, &leth.wg, trustedNodes) leth.serverPool = newServerPool(chainDb, quitSync, &leth.wg, trustedNodes)
leth.retriever = newRetrieveManager(peers, leth.reqDist, leth.serverPool) leth.retriever = newRetrieveManager(peers, leth.reqDist, leth.serverPool)
leth.relay = NewLesTxRelay(peers, leth.retriever) leth.relay = newLesTxRelay(peers, leth.retriever)
leth.odr = NewLesOdr(chainDb, light.DefaultClientIndexerConfig, leth.retriever) leth.odr = NewLesOdr(chainDb, light.DefaultClientIndexerConfig, leth.retriever)
leth.chtIndexer = light.NewChtIndexer(chainDb, leth.odr, params.CHTFrequency, params.HelperTrieConfirmations) leth.chtIndexer = light.NewChtIndexer(chainDb, leth.odr, params.CHTFrequency, params.HelperTrieConfirmations)
leth.bloomTrieIndexer = light.NewBloomTrieIndexer(chainDb, leth.odr, params.BloomBitsBlocksClient, params.BloomTrieFrequency) leth.bloomTrieIndexer = light.NewBloomTrieIndexer(chainDb, leth.odr, params.BloomBitsBlocksClient, params.BloomTrieFrequency)
leth.odr.SetIndexers(leth.chtIndexer, leth.bloomTrieIndexer, leth.bloomIndexer) leth.odr.SetIndexers(leth.chtIndexer, leth.bloomTrieIndexer, leth.bloomIndexer)
checkpoint := config.Checkpoint
if checkpoint == nil {
checkpoint = params.TrustedCheckpoints[genesisHash]
}
// Note: NewLightChain adds the trusted checkpoint so it needs an ODR with // Note: NewLightChain adds the trusted checkpoint so it needs an ODR with
// indexers already set but not started yet // indexers already set but not started yet
if leth.blockchain, err = light.NewLightChain(leth.odr, leth.chainConfig, leth.engine); err != nil { if leth.blockchain, err = light.NewLightChain(leth.odr, leth.chainConfig, leth.engine, checkpoint); err != nil {
return nil, err return nil, err
} }
// Note: AddChildIndexer starts the update process for the child // Note: AddChildIndexer starts the update process for the child
@ -141,32 +146,6 @@ func New(ctx *node.ServiceContext, config *eth.Config) (*LightEthereum, error) {
} }
leth.txPool = light.NewTxPool(leth.chainConfig, leth.blockchain, leth.relay) leth.txPool = light.NewTxPool(leth.chainConfig, leth.blockchain, leth.relay)
if leth.protocolManager, err = NewProtocolManager(
leth.chainConfig,
light.DefaultClientIndexerConfig,
true,
config.NetworkId,
leth.eventMux,
leth.engine,
leth.peers,
leth.blockchain,
nil,
chainDb,
leth.odr,
leth.relay,
leth.serverPool,
quitSync,
&leth.wg,
config.ULC,
nil); err != nil {
return nil, err
}
if leth.protocolManager.isULCEnabled() {
log.Warn("Ultra light client is enabled", "trustedNodes", len(leth.protocolManager.ulc.trustedKeys), "minTrustedFraction", leth.protocolManager.ulc.minTrustedFraction)
leth.blockchain.DisableCheckFreq()
}
leth.ApiBackend = &LesApiBackend{ctx.ExtRPCEnabled(), leth, nil} leth.ApiBackend = &LesApiBackend{ctx.ExtRPCEnabled(), leth, nil}
gpoParams := config.GPO gpoParams := config.GPO
@ -174,6 +153,19 @@ func New(ctx *node.ServiceContext, config *eth.Config) (*LightEthereum, error) {
gpoParams.Default = config.Miner.GasPrice gpoParams.Default = config.Miner.GasPrice
} }
leth.ApiBackend.gpo = gasprice.NewOracle(leth.ApiBackend, gpoParams) leth.ApiBackend.gpo = gasprice.NewOracle(leth.ApiBackend, gpoParams)
oracle := config.CheckpointOracle
if oracle == nil {
oracle = params.CheckpointOracles[genesisHash]
}
registrar := newCheckpointOracle(oracle, leth.getLocalCheckpoint)
if leth.protocolManager, err = NewProtocolManager(leth.chainConfig, checkpoint, light.DefaultClientIndexerConfig, config.ULC, true, config.NetworkId, leth.eventMux, leth.peers, leth.blockchain, nil, chainDb, leth.odr, leth.serverPool, registrar, quitSync, &leth.wg, nil); err != nil {
return nil, err
}
if leth.protocolManager.isULCEnabled() {
log.Warn("Ultra light client is enabled", "trustedNodes", len(leth.protocolManager.ulc.trustedKeys), "minTrustedFraction", leth.protocolManager.ulc.minTrustedFraction)
leth.blockchain.DisableCheckFreq()
}
return leth, nil return leth, nil
} }
@ -234,6 +226,11 @@ func (s *LightEthereum) APIs() []rpc.API {
Version: "1.0", Version: "1.0",
Service: s.netRPCService, Service: s.netRPCService,
Public: true, Public: true,
}, {
Namespace: "les",
Version: "1.0",
Service: NewPrivateLightAPI(&s.lesCommons, s.protocolManager.reg),
Public: false,
}, },
}...) }...)
} }
@ -288,3 +285,12 @@ func (s *LightEthereum) Stop() error {
return nil return nil
} }
// SetClient sets the rpc client and binds the registrar contract.
func (s *LightEthereum) SetContractBackend(backend bind.ContractBackend) {
// Short circuit if registrar is nil
if s.protocolManager.reg == nil {
return
}
s.protocolManager.reg.start(backend)
}

158
les/checkpointoracle.go Normal file
View File

@ -0,0 +1,158 @@
// Copyright 2019 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 <http://www.gnu.org/licenses/>.
package les
import (
"encoding/binary"
"sync/atomic"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/contracts/checkpointoracle"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/params"
)
// checkpointOracle is responsible for offering the latest stable checkpoint
// generated and announced by the contract admins on-chain. The checkpoint is
// verified by clients locally during the checkpoint syncing.
type checkpointOracle struct {
config *params.CheckpointOracleConfig
contract *checkpointoracle.CheckpointOracle
// Whether the contract backend is set.
running int32
getLocal func(uint64) params.TrustedCheckpoint // Function used to retrieve local checkpoint
syncDoneHook func() // Function used to notify that light syncing has completed.
}
// newCheckpointOracle returns a checkpoint registrar handler.
func newCheckpointOracle(config *params.CheckpointOracleConfig, getLocal func(uint64) params.TrustedCheckpoint) *checkpointOracle {
if config == nil {
log.Info("Checkpoint registrar is not enabled")
return nil
}
if config.Address == (common.Address{}) || uint64(len(config.Signers)) < config.Threshold {
log.Warn("Invalid checkpoint registrar config")
return nil
}
log.Info("Configured checkpoint registrar", "address", config.Address, "signers", len(config.Signers), "threshold", config.Threshold)
return &checkpointOracle{
config: config,
getLocal: getLocal,
}
}
// start binds the registrar contract and start listening to the
// newCheckpointEvent for the server side.
func (reg *checkpointOracle) start(backend bind.ContractBackend) {
contract, err := checkpointoracle.NewCheckpointOracle(reg.config.Address, backend)
if err != nil {
log.Error("Oracle contract binding failed", "err", err)
return
}
if !atomic.CompareAndSwapInt32(&reg.running, 0, 1) {
log.Error("Already bound and listening to registrar")
return
}
reg.contract = contract
}
// isRunning returns an indicator whether the registrar is running.
func (reg *checkpointOracle) isRunning() bool {
return atomic.LoadInt32(&reg.running) == 1
}
// stableCheckpoint returns the stable checkpoint which was generated by local
// indexers and announced by trusted signers.
func (reg *checkpointOracle) stableCheckpoint() (*params.TrustedCheckpoint, uint64) {
// Retrieve the latest checkpoint from the contract, abort if empty
latest, hash, height, err := reg.contract.Contract().GetLatestCheckpoint(nil)
if err != nil || (latest == 0 && hash == [32]byte{}) {
return nil, 0
}
local := reg.getLocal(latest)
// The following scenarios may occur:
//
// * local node is out of sync so that it doesn't have the
// checkpoint which registered in the contract.
// * local checkpoint doesn't match with the registered one.
//
// In both cases, server won't send the **stable** checkpoint
// to the client(no worry, client can use hardcoded one instead).
if local.HashEqual(common.Hash(hash)) {
return &local, height.Uint64()
}
return nil, 0
}
// verifySigners recovers the signer addresses according to the signature and
// checks whether there are enough approvals to finalize the checkpoint.
func (reg *checkpointOracle) verifySigners(index uint64, hash [32]byte, signatures [][]byte) (bool, []common.Address) {
// Short circuit if the given signatures doesn't reach the threshold.
if len(signatures) < int(reg.config.Threshold) {
return false, nil
}
var (
signers []common.Address
checked = make(map[common.Address]struct{})
)
for i := 0; i < len(signatures); i++ {
if len(signatures[i]) != 65 {
continue
}
// EIP 191 style signatures
//
// Arguments when calculating hash to validate
// 1: byte(0x19) - the initial 0x19 byte
// 2: byte(0) - the version byte (data with intended validator)
// 3: this - the validator address
// -- Application specific data
// 4 : checkpoint section_index (uint64)
// 5 : checkpoint hash (bytes32)
// hash = keccak256(checkpoint_index, section_head, cht_root, bloom_root)
buf := make([]byte, 8)
binary.BigEndian.PutUint64(buf, index)
data := append([]byte{0x19, 0x00}, append(reg.config.Address.Bytes(), append(buf, hash[:]...)...)...)
signatures[i][64] -= 27 // Transform V from 27/28 to 0/1 according to the yellow paper for verification.
pubkey, err := crypto.Ecrecover(crypto.Keccak256(data), signatures[i])
if err != nil {
return false, nil
}
var signer common.Address
copy(signer[:], crypto.Keccak256(pubkey[1:])[12:])
if _, exist := checked[signer]; exist {
continue
}
for _, s := range reg.config.Signers {
if s == signer {
signers = append(signers, signer)
checked[signer] = struct{}{}
}
}
}
threshold := reg.config.Threshold
if uint64(len(signers)) < threshold {
log.Warn("Not enough signers to approve checkpoint", "signers", len(signers), "threshold", threshold)
return false, nil
}
return true, signers
}

52
les/commons.go
View File

@ -76,24 +76,6 @@ func (c *lesCommons) makeProtocols(versions []uint) []p2p.Protocol {
// nodeInfo retrieves some protocol metadata about the running host node. // nodeInfo retrieves some protocol metadata about the running host node.
func (c *lesCommons) nodeInfo() interface{} { func (c *lesCommons) nodeInfo() interface{} {
var cht params.TrustedCheckpoint
sections, _, _ := c.chtIndexer.Sections()
sections2, _, _ := c.bloomTrieIndexer.Sections()
if sections2 < sections {
sections = sections2
}
if sections > 0 {
sectionIndex := sections - 1
sectionHead := c.bloomTrieIndexer.SectionHead(sectionIndex)
cht = params.TrustedCheckpoint{
SectionIndex: sectionIndex,
SectionHead: sectionHead,
CHTRoot: light.GetChtRoot(c.chainDb, sectionIndex, sectionHead),
BloomRoot: light.GetBloomTrieRoot(c.chainDb, sectionIndex, sectionHead),
}
}
chain := c.protocolManager.blockchain chain := c.protocolManager.blockchain
head := chain.CurrentHeader() head := chain.CurrentHeader()
hash := head.Hash() hash := head.Hash()
@ -103,6 +85,38 @@ func (c *lesCommons) nodeInfo() interface{} {
Genesis: chain.Genesis().Hash(), Genesis: chain.Genesis().Hash(),
Config: chain.Config(), Config: chain.Config(),
Head: chain.CurrentHeader().Hash(), Head: chain.CurrentHeader().Hash(),
CHT: cht, CHT: c.latestLocalCheckpoint(),
}
}
// latestLocalCheckpoint finds the common stored section index and returns a set of
// post-processed trie roots (CHT and BloomTrie) associated with
// the appropriate section index and head hash as a local checkpoint package.
func (c *lesCommons) latestLocalCheckpoint() params.TrustedCheckpoint {
sections, _, _ := c.chtIndexer.Sections()
sections2, _, _ := c.bloomTrieIndexer.Sections()
// Cap the section index if the two sections are not consistent.
if sections > sections2 {
sections = sections2
}
if sections == 0 {
// No checkpoint information can be provided.
return params.TrustedCheckpoint{}
}
return c.getLocalCheckpoint(sections - 1)
}
// getLocalCheckpoint returns a set of post-processed trie roots (CHT and BloomTrie)
// associated with the appropriate head hash by specific section index.
//
// The returned checkpoint is only the checkpoint generated by the local indexers,
// not the stable checkpoint registered in the registrar contract.
func (c *lesCommons) getLocalCheckpoint(index uint64) params.TrustedCheckpoint {
sectionHead := c.chtIndexer.SectionHead(index)
return params.TrustedCheckpoint{
SectionIndex: index,
SectionHead: sectionHead,
CHTRoot: light.GetChtRoot(c.chainDb, index, sectionHead),
BloomRoot: light.GetBloomTrieRoot(c.chainDb, index, sectionHead),
} }
} }

34
les/handler.go
View File

@ -27,7 +27,6 @@ import (
"time" "time"
"github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/consensus"
"github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/rawdb" "github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/core/state" "github.com/ethereum/go-ethereum/core/state"
@ -101,7 +100,7 @@ type ProtocolManager struct {
networkId uint64 // The identity of network. networkId uint64 // The identity of network.
txpool txPool txpool txPool
txrelay *LesTxRelay txrelay *lesTxRelay
blockchain BlockChain blockchain BlockChain
chainDb ethdb.Database chainDb ethdb.Database
odr *LesOdr odr *LesOdr
@ -115,6 +114,8 @@ type ProtocolManager struct {
fetcher *lightFetcher fetcher *lightFetcher
ulc *ulc ulc *ulc
peers *peerSet peers *peerSet
checkpoint *params.TrustedCheckpoint
reg *checkpointOracle // If reg == nil, it means the checkpoint registrar is not activated
// channels for fetcher, syncer, txsyncLoop // channels for fetcher, syncer, txsyncLoop
newPeerCh chan *peer newPeerCh chan *peer
@ -131,23 +132,7 @@ type ProtocolManager struct {
// NewProtocolManager returns a new ethereum sub protocol manager. The Ethereum sub protocol manages peers capable // NewProtocolManager returns a new ethereum sub protocol manager. The Ethereum sub protocol manages peers capable
// with the ethereum network. // with the ethereum network.
func NewProtocolManager( func NewProtocolManager(chainConfig *params.ChainConfig, checkpoint *params.TrustedCheckpoint, indexerConfig *light.IndexerConfig, ulcConfig *eth.ULCConfig, client bool, networkId uint64, mux *event.TypeMux, peers *peerSet, blockchain BlockChain, txpool txPool, chainDb ethdb.Database, odr *LesOdr, serverPool *serverPool, registrar *checkpointOracle, quitSync chan struct{}, wg *sync.WaitGroup, synced func() bool) (*ProtocolManager, error) {
chainConfig *params.ChainConfig,
indexerConfig *light.IndexerConfig,
client bool,
networkId uint64,
mux *event.TypeMux,
engine consensus.Engine,
peers *peerSet,
blockchain BlockChain,
txpool txPool,
chainDb ethdb.Database,
odr *LesOdr,
txrelay *LesTxRelay,
serverPool *serverPool,
quitSync chan struct{},
wg *sync.WaitGroup,
ulcConfig *eth.ULCConfig, synced func() bool) (*ProtocolManager, error) {
// Create the protocol manager with the base fields // Create the protocol manager with the base fields
manager := &ProtocolManager{ manager := &ProtocolManager{
client: client, client: client,
@ -159,13 +144,14 @@ func NewProtocolManager(
odr: odr, odr: odr,
networkId: networkId, networkId: networkId,
txpool: txpool, txpool: txpool,
txrelay: txrelay,
serverPool: serverPool, serverPool: serverPool,
reg: registrar,
peers: peers, peers: peers,
newPeerCh: make(chan *peer), newPeerCh: make(chan *peer),
quitSync: quitSync, quitSync: quitSync,
wg: wg, wg: wg,
noMorePeers: make(chan struct{}), noMorePeers: make(chan struct{}),
checkpoint: checkpoint,
synced: synced, synced: synced,
} }
if odr != nil { if odr != nil {
@ -182,11 +168,11 @@ func NewProtocolManager(
removePeer = func(id string) {} removePeer = func(id string) {}
} }
if client { if client {
var checkpoint uint64 var checkpointNumber uint64
if cht, ok := params.TrustedCheckpoints[blockchain.Genesis().Hash()]; ok { if checkpoint != nil {
checkpoint = (cht.SectionIndex+1)*params.CHTFrequency - 1 checkpointNumber = (checkpoint.SectionIndex+1)*params.CHTFrequency - 1
} }
manager.downloader = downloader.New(checkpoint, chainDb, nil, manager.eventMux, nil, blockchain, removePeer) manager.downloader = downloader.New(checkpointNumber, chainDb, nil, manager.eventMux, nil, blockchain, removePeer)
manager.peers.notify((*downloaderPeerNotify)(manager)) manager.peers.notify((*downloaderPeerNotify)(manager))
manager.fetcher = newLightFetcher(manager) manager.fetcher = newLightFetcher(manager)
} }

47
les/handler_test.go
View File

@ -259,7 +259,6 @@ func testGetCode(t *testing.T, protocol int) {
var codereqs []*CodeReq var codereqs []*CodeReq
var codes [][]byte var codes [][]byte
for i := uint64(0); i <= bc.CurrentBlock().NumberU64(); i++ { for i := uint64(0); i <= bc.CurrentBlock().NumberU64(); i++ {
header := bc.GetHeaderByNumber(i) header := bc.GetHeaderByNumber(i)
req := &CodeReq{ req := &CodeReq{
@ -342,11 +341,10 @@ func testGetProofs(t *testing.T, protocol int) {
var proofreqs []ProofReq var proofreqs []ProofReq
proofsV2 := light.NewNodeSet() proofsV2 := light.NewNodeSet()
accounts := []common.Address{testBankAddress, acc1Addr, acc2Addr, {}} accounts := []common.Address{bankAddr, userAddr1, userAddr2, {}}
for i := uint64(0); i <= bc.CurrentBlock().NumberU64(); i++ { for i := uint64(0); i <= bc.CurrentBlock().NumberU64(); i++ {
header := bc.GetHeaderByNumber(i) header := bc.GetHeaderByNumber(i)
root := header.Root trie, _ := trie.New(header.Root, trie.NewDatabase(server.db))
trie, _ := trie.New(root, trie.NewDatabase(server.db))
for _, acc := range accounts { for _, acc := range accounts {
req := ProofReq{ req := ProofReq{
@ -377,7 +375,7 @@ func testGetStaleProof(t *testing.T, protocol int) {
check := func(number uint64, wantOK bool) { check := func(number uint64, wantOK bool) {
var ( var (
header = bc.GetHeaderByNumber(number) header = bc.GetHeaderByNumber(number)
account = crypto.Keccak256(testBankAddress.Bytes()) account = crypto.Keccak256(userAddr1.Bytes())
) )
req := &ProofReq{ req := &ProofReq{
BHash: header.Hash(), BHash: header.Hash(),
@ -390,7 +388,7 @@ func testGetStaleProof(t *testing.T, protocol int) {
if wantOK { if wantOK {
proofsV2 := light.NewNodeSet() proofsV2 := light.NewNodeSet()
t, _ := trie.New(header.Root, trie.NewDatabase(server.db)) t, _ := trie.New(header.Root, trie.NewDatabase(server.db))
t.Prove(crypto.Keccak256(account), 0, proofsV2) t.Prove(account, 0, proofsV2)
expected = proofsV2.NodeList() expected = proofsV2.NodeList()
} }
if err := expectResponse(server.tPeer.app, ProofsV2Msg, 42, testBufLimit, expected); err != nil { if err := expectResponse(server.tPeer.app, ProofsV2Msg, 42, testBufLimit, expected); err != nil {
@ -496,14 +494,15 @@ func TestGetBloombitsProofs(t *testing.T) {
} }
func TestTransactionStatusLes2(t *testing.T) { func TestTransactionStatusLes2(t *testing.T) {
db := rawdb.NewMemoryDatabase() server, tearDown := newServerEnv(t, 0, 2, nil)
pm := newTestProtocolManagerMust(t, false, 0, nil, nil, nil, db, nil) defer tearDown()
chain := pm.blockchain.(*core.BlockChain)
chain := server.pm.blockchain.(*core.BlockChain)
config := core.DefaultTxPoolConfig config := core.DefaultTxPoolConfig
config.Journal = "" config.Journal = ""
txpool := core.NewTxPool(config, params.TestChainConfig, chain) txpool := core.NewTxPool(config, params.TestChainConfig, chain)
pm.txpool = txpool server.pm.txpool = txpool
peer, _ := newTestPeer(t, "peer", 2, pm, true, 0) peer, _ := newTestPeer(t, "peer", 2, server.pm, true, 0)
defer peer.close() defer peer.close()
var reqID uint64 var reqID uint64
@ -511,13 +510,13 @@ func TestTransactionStatusLes2(t *testing.T) {
test := func(tx *types.Transaction, send bool, expStatus light.TxStatus) { test := func(tx *types.Transaction, send bool, expStatus light.TxStatus) {
reqID++ reqID++
if send { if send {
cost := peer.GetRequestCost(SendTxV2Msg, 1) cost := server.tPeer.GetRequestCost(SendTxV2Msg, 1)
sendRequest(peer.app, SendTxV2Msg, reqID, cost, types.Transactions{tx}) sendRequest(server.tPeer.app, SendTxV2Msg, reqID, cost, types.Transactions{tx})
} else { } else {
cost := peer.GetRequestCost(GetTxStatusMsg, 1) cost := server.tPeer.GetRequestCost(GetTxStatusMsg, 1)
sendRequest(peer.app, GetTxStatusMsg, reqID, cost, []common.Hash{tx.Hash()}) sendRequest(server.tPeer.app, GetTxStatusMsg, reqID, cost, []common.Hash{tx.Hash()})
} }
if err := expectResponse(peer.app, TxStatusMsg, reqID, testBufLimit, []light.TxStatus{expStatus}); err != nil { if err := expectResponse(server.tPeer.app, TxStatusMsg, reqID, testBufLimit, []light.TxStatus{expStatus}); err != nil {
t.Errorf("transaction status mismatch") t.Errorf("transaction status mismatch")
} }
} }
@ -525,16 +524,16 @@ func TestTransactionStatusLes2(t *testing.T) {
signer := types.HomesteadSigner{} signer := types.HomesteadSigner{}
// test error status by sending an underpriced transaction // test error status by sending an underpriced transaction
tx0, _ := types.SignTx(types.NewTransaction(0, acc1Addr, big.NewInt(10000), params.TxGas, nil, nil), signer, testBankKey) tx0, _ := types.SignTx(types.NewTransaction(0, userAddr1, big.NewInt(10000), params.TxGas, nil, nil), signer, bankKey)
test(tx0, true, light.TxStatus{Status: core.TxStatusUnknown, Error: core.ErrUnderpriced.Error()}) test(tx0, true, light.TxStatus{Status: core.TxStatusUnknown, Error: core.ErrUnderpriced.Error()})
tx1, _ := types.SignTx(types.NewTransaction(0, acc1Addr, big.NewInt(10000), params.TxGas, big.NewInt(100000000000), nil), signer, testBankKey) tx1, _ := types.SignTx(types.NewTransaction(0, userAddr1, big.NewInt(10000), params.TxGas, big.NewInt(100000000000), nil), signer, bankKey)
test(tx1, false, light.TxStatus{Status: core.TxStatusUnknown}) // query before sending, should be unknown test(tx1, false, light.TxStatus{Status: core.TxStatusUnknown}) // query before sending, should be unknown
test(tx1, true, light.TxStatus{Status: core.TxStatusPending}) // send valid processable tx, should return pending test(tx1, true, light.TxStatus{Status: core.TxStatusPending}) // send valid processable tx, should return pending
test(tx1, true, light.TxStatus{Status: core.TxStatusPending}) // adding it again should not return an error test(tx1, true, light.TxStatus{Status: core.TxStatusPending}) // adding it again should not return an error
tx2, _ := types.SignTx(types.NewTransaction(1, acc1Addr, big.NewInt(10000), params.TxGas, big.NewInt(100000000000), nil), signer, testBankKey) tx2, _ := types.SignTx(types.NewTransaction(1, userAddr1, big.NewInt(10000), params.TxGas, big.NewInt(100000000000), nil), signer, bankKey)
tx3, _ := types.SignTx(types.NewTransaction(2, acc1Addr, big.NewInt(10000), params.TxGas, big.NewInt(100000000000), nil), signer, testBankKey) tx3, _ := types.SignTx(types.NewTransaction(2, userAddr1, big.NewInt(10000), params.TxGas, big.NewInt(100000000000), nil), signer, bankKey)
// send transactions in the wrong order, tx3 should be queued // send transactions in the wrong order, tx3 should be queued
test(tx3, true, light.TxStatus{Status: core.TxStatusQueued}) test(tx3, true, light.TxStatus{Status: core.TxStatusQueued})
test(tx2, true, light.TxStatus{Status: core.TxStatusPending}) test(tx2, true, light.TxStatus{Status: core.TxStatusPending})
@ -542,7 +541,7 @@ func TestTransactionStatusLes2(t *testing.T) {
test(tx3, false, light.TxStatus{Status: core.TxStatusPending}) test(tx3, false, light.TxStatus{Status: core.TxStatusPending})
// generate and add a block with tx1 and tx2 included // generate and add a block with tx1 and tx2 included
gchain, _ := core.GenerateChain(params.TestChainConfig, chain.GetBlockByNumber(0), ethash.NewFaker(), db, 1, func(i int, block *core.BlockGen) { gchain, _ := core.GenerateChain(params.TestChainConfig, chain.GetBlockByNumber(0), ethash.NewFaker(), server.db, 1, func(i int, block *core.BlockGen) {
block.AddTx(tx1) block.AddTx(tx1)
block.AddTx(tx2) block.AddTx(tx2)
}) })
@ -561,12 +560,12 @@ func TestTransactionStatusLes2(t *testing.T) {
} }
// check if their status is included now // check if their status is included now
block1hash := rawdb.ReadCanonicalHash(db, 1) block1hash := rawdb.ReadCanonicalHash(server.db, 1)
test(tx1, false, light.TxStatus{Status: core.TxStatusIncluded, Lookup: &rawdb.LegacyTxLookupEntry{BlockHash: block1hash, BlockIndex: 1, Index: 0}}) test(tx1, false, light.TxStatus{Status: core.TxStatusIncluded, Lookup: &rawdb.LegacyTxLookupEntry{BlockHash: block1hash, BlockIndex: 1, Index: 0}})
test(tx2, false, light.TxStatus{Status: core.TxStatusIncluded, Lookup: &rawdb.LegacyTxLookupEntry{BlockHash: block1hash, BlockIndex: 1, Index: 1}}) test(tx2, false, light.TxStatus{Status: core.TxStatusIncluded, Lookup: &rawdb.LegacyTxLookupEntry{BlockHash: block1hash, BlockIndex: 1, Index: 1}})
// create a reorg that rolls them back // create a reorg that rolls them back
gchain, _ = core.GenerateChain(params.TestChainConfig, chain.GetBlockByNumber(0), ethash.NewFaker(), db, 2, func(i int, block *core.BlockGen) {}) gchain, _ = core.GenerateChain(params.TestChainConfig, chain.GetBlockByNumber(0), ethash.NewFaker(), server.db, 2, func(i int, block *core.BlockGen) {})
if _, err := chain.InsertChain(gchain); err != nil { if _, err := chain.InsertChain(gchain); err != nil {
panic(err) panic(err)
} }
@ -589,7 +588,7 @@ func TestStopResumeLes3(t *testing.T) {
db := rawdb.NewMemoryDatabase() db := rawdb.NewMemoryDatabase()
clock := &mclock.Simulated{} clock := &mclock.Simulated{}
testCost := testBufLimit / 10 testCost := testBufLimit / 10
pm, err := newTestProtocolManager(false, 0, nil, nil, nil, db, nil, testCost, clock) pm, _, err := newTestProtocolManager(false, 0, nil, nil, nil, db, nil, testCost, clock)
if err != nil { if err != nil {
t.Fatalf("Failed to create protocol manager: %v", err) t.Fatalf("Failed to create protocol manager: %v", err)
} }

247
les/helper_test.go
View File

@ -20,19 +20,22 @@
package les package les
import ( import (
"context"
"crypto/rand" "crypto/rand"
"math/big" "math/big"
"sync" "sync"
"testing" "testing"
"time" "time"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/accounts/abi/bind/backends"
"github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/mclock" "github.com/ethereum/go-ethereum/common/mclock"
"github.com/ethereum/go-ethereum/consensus/ethash" "github.com/ethereum/go-ethereum/consensus/ethash"
"github.com/ethereum/go-ethereum/contracts/checkpointoracle/contract"
"github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/rawdb" "github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/core/types"
"github.com/ethereum/go-ethereum/core/vm"
"github.com/ethereum/go-ethereum/crypto" "github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/eth" "github.com/ethereum/go-ethereum/eth"
"github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/ethdb"
@ -45,14 +48,14 @@ import (
) )
var ( var (
testBankKey, _ = crypto.HexToECDSA("b71c71a67e1177ad4e901695e1b4b9ee17ae16c6668d313eac2f96dbcda3f291") bankKey, _ = crypto.GenerateKey()
testBankAddress = crypto.PubkeyToAddress(testBankKey.PublicKey) bankAddr = crypto.PubkeyToAddress(bankKey.PublicKey)
testBankFunds = big.NewInt(1000000000000000000) bankFunds = big.NewInt(1000000000000000000)
acc1Key, _ = crypto.HexToECDSA("8a1f9a8f95be41cd7ccb6168179afb4504aefe388d1e14474d32c45c72ce7b7a") userKey1, _ = crypto.GenerateKey()
acc2Key, _ = crypto.HexToECDSA("49a7b37aa6f6645917e7b807e9d1c00d4fa71f18343b0d4122a4d2df64dd6fee") userKey2, _ = crypto.GenerateKey()
acc1Addr = crypto.PubkeyToAddress(acc1Key.PublicKey) userAddr1 = crypto.PubkeyToAddress(userKey1.PublicKey)
acc2Addr = crypto.PubkeyToAddress(acc2Key.PublicKey) userAddr2 = crypto.PubkeyToAddress(userKey2.PublicKey)
testContractCode = common.Hex2Bytes("606060405260cc8060106000396000f360606040526000357c01000000000000000000000000000000000000000000000000000000009004806360cd2685146041578063c16431b914606b57603f565b005b6055600480803590602001909190505060a9565b6040518082815260200191505060405180910390f35b60886004808035906020019091908035906020019091905050608a565b005b80600060005083606481101560025790900160005b50819055505b5050565b6000600060005082606481101560025790900160005b5054905060c7565b91905056") testContractCode = common.Hex2Bytes("606060405260cc8060106000396000f360606040526000357c01000000000000000000000000000000000000000000000000000000009004806360cd2685146041578063c16431b914606b57603f565b005b6055600480803590602001909190505060a9565b6040518082815260200191505060405180910390f35b60886004808035906020019091908035906020019091905050608a565b005b80600060005083606481101560025790900160005b50819055505b5050565b6000600060005082606481101560025790900160005b5054905060c7565b91905056")
testContractAddr common.Address testContractAddr common.Address
@ -60,8 +63,21 @@ var (
testContractDeployed = uint64(2) testContractDeployed = uint64(2)
testEventEmitterCode = common.Hex2Bytes("60606040523415600e57600080fd5b7f57050ab73f6b9ebdd9f76b8d4997793f48cf956e965ee070551b9ca0bb71584e60405160405180910390a160358060476000396000f3006060604052600080fd00a165627a7a723058203f727efcad8b5811f8cb1fc2620ce5e8c63570d697aef968172de296ea3994140029") testEventEmitterCode = common.Hex2Bytes("60606040523415600e57600080fd5b7f57050ab73f6b9ebdd9f76b8d4997793f48cf956e965ee070551b9ca0bb71584e60405160405180910390a160358060476000396000f3006060604052600080fd00a165627a7a723058203f727efcad8b5811f8cb1fc2620ce5e8c63570d697aef968172de296ea3994140029")
testEventEmitterAddr common.Address
// Checkpoint registrar relative
registrarAddr common.Address
signerKey, _ = crypto.GenerateKey()
signerAddr = crypto.PubkeyToAddress(signerKey.PublicKey)
)
var (
// The block frequency for creating checkpoint(only used in test)
sectionSize = big.NewInt(512)
// The number of confirmations needed to generate a checkpoint(only used in test).
processConfirms = big.NewInt(4)
//
testBufLimit = uint64(1000000) testBufLimit = uint64(1000000)
testBufRecharge = uint64(1000) testBufRecharge = uint64(1000)
) )
@ -81,102 +97,139 @@ contract test {
} }
*/ */
func testChainGen(i int, block *core.BlockGen) { // prepareTestchain pre-commits specified number customized blocks into chain.
signer := types.HomesteadSigner{} func prepareTestchain(n int, backend *backends.SimulatedBackend) {
var (
ctx = context.Background()
signer = types.HomesteadSigner{}
)
for i := 0; i < n; i++ {
switch i {
case 0:
// deploy checkpoint contract
registrarAddr, _, _, _ = contract.DeployCheckpointOracle(bind.NewKeyedTransactor(bankKey), backend, []common.Address{signerAddr}, sectionSize, processConfirms, big.NewInt(1))
// bankUser transfers some ether to user1
nonce, _ := backend.PendingNonceAt(ctx, bankAddr)
tx, _ := types.SignTx(types.NewTransaction(nonce, userAddr1, big.NewInt(10000), params.TxGas, nil, nil), signer, bankKey)
backend.SendTransaction(ctx, tx)
case 1:
bankNonce, _ := backend.PendingNonceAt(ctx, bankAddr)
userNonce1, _ := backend.PendingNonceAt(ctx, userAddr1)
switch i { // bankUser transfers more ether to user1
case 0: tx1, _ := types.SignTx(types.NewTransaction(bankNonce, userAddr1, big.NewInt(1000), params.TxGas, nil, nil), signer, bankKey)
// In block 1, the test bank sends account #1 some ether. backend.SendTransaction(ctx, tx1)
tx, _ := types.SignTx(types.NewTransaction(block.TxNonce(testBankAddress), acc1Addr, big.NewInt(10000), params.TxGas, nil, nil), signer, testBankKey)
block.AddTx(tx)
case 1:
// In block 2, the test bank sends some more ether to account #1.
// acc1Addr passes it on to account #2.
// acc1Addr creates a test contract.
// acc1Addr creates a test event.
nonce := block.TxNonce(acc1Addr)
tx1, _ := types.SignTx(types.NewTransaction(block.TxNonce(testBankAddress), acc1Addr, big.NewInt(1000), params.TxGas, nil, nil), signer, testBankKey) // user1 relays ether to user2
tx2, _ := types.SignTx(types.NewTransaction(nonce, acc2Addr, big.NewInt(1000), params.TxGas, nil, nil), signer, acc1Key) tx2, _ := types.SignTx(types.NewTransaction(userNonce1, userAddr2, big.NewInt(1000), params.TxGas, nil, nil), signer, userKey1)
tx3, _ := types.SignTx(types.NewContractCreation(nonce+1, big.NewInt(0), 200000, big.NewInt(0), testContractCode), signer, acc1Key) backend.SendTransaction(ctx, tx2)
testContractAddr = crypto.CreateAddress(acc1Addr, nonce+1)
tx4, _ := types.SignTx(types.NewContractCreation(nonce+2, big.NewInt(0), 200000, big.NewInt(0), testEventEmitterCode), signer, acc1Key) // user1 deploys a test contract
testEventEmitterAddr = crypto.CreateAddress(acc1Addr, nonce+2) tx3, _ := types.SignTx(types.NewContractCreation(userNonce1+1, big.NewInt(0), 200000, big.NewInt(0), testContractCode), signer, userKey1)
block.AddTx(tx1) backend.SendTransaction(ctx, tx3)
block.AddTx(tx2) testContractAddr = crypto.CreateAddress(userAddr1, userNonce1+1)
block.AddTx(tx3)
block.AddTx(tx4) // user1 deploys a event contract
case 2: tx4, _ := types.SignTx(types.NewContractCreation(userNonce1+2, big.NewInt(0), 200000, big.NewInt(0), testEventEmitterCode), signer, userKey1)
// Block 3 is empty but was mined by account #2. backend.SendTransaction(ctx, tx4)
block.SetCoinbase(acc2Addr) case 2:
block.SetExtra([]byte("yeehaw")) // bankUser transfer some ether to signer
data := common.Hex2Bytes("C16431B900000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000001") bankNonce, _ := backend.PendingNonceAt(ctx, bankAddr)
tx, _ := types.SignTx(types.NewTransaction(block.TxNonce(testBankAddress), testContractAddr, big.NewInt(0), 100000, nil, data), signer, testBankKey) tx1, _ := types.SignTx(types.NewTransaction(bankNonce, signerAddr, big.NewInt(1000000000), params.TxGas, nil, nil), signer, bankKey)
block.AddTx(tx) backend.SendTransaction(ctx, tx1)
case 3:
// Block 4 includes blocks 2 and 3 as uncle headers (with modified extra data). // invoke test contract
b2 := block.PrevBlock(1).Header() data := common.Hex2Bytes("C16431B900000000000000000000000000000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000000000001")
b2.Extra = []byte("foo") tx2, _ := types.SignTx(types.NewTransaction(bankNonce+1, testContractAddr, big.NewInt(0), 100000, nil, data), signer, bankKey)
block.AddUncle(b2) backend.SendTransaction(ctx, tx2)
b3 := block.PrevBlock(2).Header() case 3:
b3.Extra = []byte("foo") // invoke test contract
block.AddUncle(b3) bankNonce, _ := backend.PendingNonceAt(ctx, bankAddr)
data := common.Hex2Bytes("C16431B900000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000002") data := common.Hex2Bytes("C16431B900000000000000000000000000000000000000000000000000000000000000020000000000000000000000000000000000000000000000000000000000000002")
tx, _ := types.SignTx(types.NewTransaction(block.TxNonce(testBankAddress), testContractAddr, big.NewInt(0), 100000, nil, data), signer, testBankKey) tx, _ := types.SignTx(types.NewTransaction(bankNonce, testContractAddr, big.NewInt(0), 100000, nil, data), signer, bankKey)
block.AddTx(tx) backend.SendTransaction(ctx, tx)
}
backend.Commit()
} }
} }
// testIndexers creates a set of indexers with specified params for testing purpose. // testIndexers creates a set of indexers with specified params for testing purpose.
func testIndexers(db ethdb.Database, odr light.OdrBackend, iConfig *light.IndexerConfig) (*core.ChainIndexer, *core.ChainIndexer, *core.ChainIndexer) { func testIndexers(db ethdb.Database, odr light.OdrBackend, config *light.IndexerConfig) []*core.ChainIndexer {
chtIndexer := light.NewChtIndexer(db, odr, iConfig.ChtSize, iConfig.ChtConfirms) var indexers [3]*core.ChainIndexer
bloomIndexer := eth.NewBloomIndexer(db, iConfig.BloomSize, iConfig.BloomConfirms) indexers[0] = light.NewChtIndexer(db, odr, config.ChtSize, config.ChtConfirms)
bloomTrieIndexer := light.NewBloomTrieIndexer(db, odr, iConfig.BloomSize, iConfig.BloomTrieSize) indexers[1] = eth.NewBloomIndexer(db, config.BloomSize, config.BloomConfirms)
bloomIndexer.AddChildIndexer(bloomTrieIndexer) indexers[2] = light.NewBloomTrieIndexer(db, odr, config.BloomSize, config.BloomTrieSize)
return chtIndexer, bloomIndexer, bloomTrieIndexer // make bloomTrieIndexer as a child indexer of bloom indexer.
indexers[1].AddChildIndexer(indexers[2])
return indexers[:]
} }
// newTestProtocolManager creates a new protocol manager for testing purposes, // newTestProtocolManager creates a new protocol manager for testing purposes,
// with the given number of blocks already known, potential notification // with the given number of blocks already known, potential notification
// channels for different events and relative chain indexers array. // channels for different events and relative chain indexers array.
func newTestProtocolManager(lightSync bool, blocks int, generator func(int, *core.BlockGen), odr *LesOdr, peers *peerSet, db ethdb.Database, ulcConfig *eth.ULCConfig, testCost uint64, clock mclock.Clock) (*ProtocolManager, error) { func newTestProtocolManager(lightSync bool, blocks int, odr *LesOdr, indexers []*core.ChainIndexer, peers *peerSet, db ethdb.Database, ulcConfig *eth.ULCConfig, testCost uint64, clock mclock.Clock) (*ProtocolManager, *backends.SimulatedBackend, error) {
var ( var (
evmux = new(event.TypeMux) evmux = new(event.TypeMux)
engine = ethash.NewFaker() engine = ethash.NewFaker()
gspec = core.Genesis{ gspec = core.Genesis{
Config: params.TestChainConfig, Config: params.AllEthashProtocolChanges,
Alloc: core.GenesisAlloc{testBankAddress: {Balance: testBankFunds}}, Alloc: core.GenesisAlloc{bankAddr: {Balance: bankFunds}},
} }
genesis = gspec.MustCommit(db) pool txPool
chain BlockChain chain BlockChain
pool txPool exitCh = make(chan struct{})
) )
gspec.MustCommit(db)
if peers == nil { if peers == nil {
peers = newPeerSet() peers = newPeerSet()
} }
// create a simulation backend and pre-commit several customized block to the database.
simulation := backends.NewSimulatedBackendWithDatabase(db, gspec.Alloc, 100000000)
prepareTestchain(blocks, simulation)
// initialize empty chain for light client or pre-committed chain for server.
if lightSync { if lightSync {
chain, _ = light.NewLightChain(odr, gspec.Config, engine) chain, _ = light.NewLightChain(odr, gspec.Config, engine, nil)
} else { } else {
blockchain, _ := core.NewBlockChain(db, nil, gspec.Config, engine, vm.Config{}, nil) chain = simulation.Blockchain()
gchain, _ := core.GenerateChain(gspec.Config, genesis, ethash.NewFaker(), db, blocks, generator) pool = core.NewTxPool(core.DefaultTxPoolConfig, gspec.Config, simulation.Blockchain())
if _, err := blockchain.InsertChain(gchain); err != nil {
panic(err)
}
chain = blockchain
pool = core.NewTxPool(core.DefaultTxPoolConfig, gspec.Config, blockchain)
} }
// Create contract registrar
indexConfig := light.TestServerIndexerConfig indexConfig := light.TestServerIndexerConfig
if lightSync { if lightSync {
indexConfig = light.TestClientIndexerConfig indexConfig = light.TestClientIndexerConfig
} }
pm, err := NewProtocolManager(gspec.Config, indexConfig, lightSync, NetworkId, evmux, engine, peers, chain, pool, db, odr, nil, nil, make(chan struct{}), new(sync.WaitGroup), ulcConfig, func() bool { return true }) config := &params.CheckpointOracleConfig{
if err != nil { Address: crypto.CreateAddress(bankAddr, 0),
return nil, err Signers: []common.Address{signerAddr},
Threshold: 1,
} }
var reg *checkpointOracle
if indexers != nil {
getLocal := func(index uint64) params.TrustedCheckpoint {
chtIndexer := indexers[0]
sectionHead := chtIndexer.SectionHead(index)
return params.TrustedCheckpoint{
SectionIndex: index,
SectionHead: sectionHead,
CHTRoot: light.GetChtRoot(db, index, sectionHead),
BloomRoot: light.GetBloomTrieRoot(db, index, sectionHead),
}
}
reg = newCheckpointOracle(config, getLocal)
}
pm, err := NewProtocolManager(gspec.Config, nil, indexConfig, ulcConfig, lightSync, NetworkId, evmux, peers, chain, pool, db, odr, nil, reg, exitCh, new(sync.WaitGroup), func() bool { return true })
if err != nil {
return nil, nil, err
}
// Registrar initialization could failed if checkpoint contract is not specified.
if pm.reg != nil {
pm.reg.start(simulation)
}
// Set up les server stuff.
if !lightSync { if !lightSync {
srv := &LesServer{lesCommons: lesCommons{protocolManager: pm}} srv := &LesServer{lesCommons: lesCommons{protocolManager: pm, chainDb: db}}
pm.server = srv pm.server = srv
pm.servingQueue = newServingQueue(int64(time.Millisecond*10), 1, nil) pm.servingQueue = newServingQueue(int64(time.Millisecond*10), 1, nil)
pm.servingQueue.setThreads(4) pm.servingQueue.setThreads(4)
@ -189,19 +242,19 @@ func newTestProtocolManager(lightSync bool, blocks int, generator func(int, *cor
srv.fcManager = flowcontrol.NewClientManager(nil, clock) srv.fcManager = flowcontrol.NewClientManager(nil, clock)
} }
pm.Start(1000) pm.Start(1000)
return pm, nil return pm, simulation, nil
} }
// newTestProtocolManagerMust creates a new protocol manager for testing purposes, // newTestProtocolManagerMust creates a new protocol manager for testing purposes,
// with the given number of blocks already known, potential notification // with the given number of blocks already known, potential notification channels
// channels for different events and relative chain indexers array. In case of an error, the constructor force- // for different events and relative chain indexers array. In case of an error, the
// fails the test. // constructor force-fails the test.
func newTestProtocolManagerMust(t *testing.T, lightSync bool, blocks int, generator func(int, *core.BlockGen), odr *LesOdr, peers *peerSet, db ethdb.Database, ulcConfig *eth.ULCConfig) *ProtocolManager { func newTestProtocolManagerMust(t *testing.T, lightSync bool, blocks int, odr *LesOdr, indexers []*core.ChainIndexer, peers *peerSet, db ethdb.Database, ulcConfig *eth.ULCConfig) (*ProtocolManager, *backends.SimulatedBackend) {
pm, err := newTestProtocolManager(lightSync, blocks, generator, odr, peers, db, ulcConfig, 0, &mclock.System{}) pm, backend, err := newTestProtocolManager(lightSync, blocks, odr, indexers, peers, db, ulcConfig, 0, &mclock.System{})
if err != nil { if err != nil {
t.Fatalf("Failed to create protocol manager: %v", err) t.Fatalf("Failed to create protocol manager: %v", err)
} }
return pm return pm, backend
} }
// testPeer is a simulated peer to allow testing direct network calls. // testPeer is a simulated peer to allow testing direct network calls.
@ -324,11 +377,13 @@ func (p *testPeer) close() {
// TestEntity represents a network entity for testing with necessary auxiliary fields. // TestEntity represents a network entity for testing with necessary auxiliary fields.
type TestEntity struct { type TestEntity struct {
db ethdb.Database db ethdb.Database
rPeer *peer rPeer *peer
tPeer *testPeer tPeer *testPeer
peers *peerSet peers *peerSet
pm *ProtocolManager pm *ProtocolManager
backend *backends.SimulatedBackend
// Indexers // Indexers
chtIndexer *core.ChainIndexer chtIndexer *core.ChainIndexer
bloomIndexer *core.ChainIndexer bloomIndexer *core.ChainIndexer
@ -338,11 +393,12 @@ type TestEntity struct {
// newServerEnv creates a server testing environment with a connected test peer for testing purpose. // newServerEnv creates a server testing environment with a connected test peer for testing purpose.
func newServerEnv(t *testing.T, blocks int, protocol int, waitIndexers func(*core.ChainIndexer, *core.ChainIndexer, *core.ChainIndexer)) (*TestEntity, func()) { func newServerEnv(t *testing.T, blocks int, protocol int, waitIndexers func(*core.ChainIndexer, *core.ChainIndexer, *core.ChainIndexer)) (*TestEntity, func()) {
db := rawdb.NewMemoryDatabase() db := rawdb.NewMemoryDatabase()
cIndexer, bIndexer, btIndexer := testIndexers(db, nil, light.TestServerIndexerConfig) indexers := testIndexers(db, nil, light.TestServerIndexerConfig)
pm := newTestProtocolManagerMust(t, false, blocks, testChainGen, nil, nil, db, nil) pm, b := newTestProtocolManagerMust(t, false, blocks, nil, indexers, nil, db, nil)
peer, _ := newTestPeer(t, "peer", protocol, pm, true, 0) peer, _ := newTestPeer(t, "peer", protocol, pm, true, 0)
cIndexer, bIndexer, btIndexer := indexers[0], indexers[1], indexers[2]
cIndexer.Start(pm.blockchain.(*core.BlockChain)) cIndexer.Start(pm.blockchain.(*core.BlockChain))
bIndexer.Start(pm.blockchain.(*core.BlockChain)) bIndexer.Start(pm.blockchain.(*core.BlockChain))
@ -355,6 +411,7 @@ func newServerEnv(t *testing.T, blocks int, protocol int, waitIndexers func(*cor
db: db, db: db,
tPeer: peer, tPeer: peer,
pm: pm, pm: pm,
backend: b,
chtIndexer: cIndexer, chtIndexer: cIndexer,
bloomIndexer: bIndexer, bloomIndexer: bIndexer,
bloomTrieIndexer: btIndexer, bloomTrieIndexer: btIndexer,
@ -376,12 +433,16 @@ func newClientServerEnv(t *testing.T, blocks int, protocol int, waitIndexers fun
rm := newRetrieveManager(lPeers, dist, nil) rm := newRetrieveManager(lPeers, dist, nil)
odr := NewLesOdr(ldb, light.TestClientIndexerConfig, rm) odr := NewLesOdr(ldb, light.TestClientIndexerConfig, rm)
cIndexer, bIndexer, btIndexer := testIndexers(db, nil, light.TestServerIndexerConfig) indexers := testIndexers(db, nil, light.TestServerIndexerConfig)
lcIndexer, lbIndexer, lbtIndexer := testIndexers(ldb, odr, light.TestClientIndexerConfig) lIndexers := testIndexers(ldb, odr, light.TestClientIndexerConfig)
cIndexer, bIndexer, btIndexer := indexers[0], indexers[1], indexers[2]
lcIndexer, lbIndexer, lbtIndexer := lIndexers[0], lIndexers[1], lIndexers[2]
odr.SetIndexers(lcIndexer, lbtIndexer, lbIndexer) odr.SetIndexers(lcIndexer, lbtIndexer, lbIndexer)
pm := newTestProtocolManagerMust(t, false, blocks, testChainGen, nil, peers, db, nil) pm, b := newTestProtocolManagerMust(t, false, blocks, nil, indexers, peers, db, nil)
lpm := newTestProtocolManagerMust(t, true, 0, nil, odr, lPeers, ldb, nil) lpm, lb := newTestProtocolManagerMust(t, true, 0, odr, lIndexers, lPeers, ldb, nil)
startIndexers := func(clientMode bool, pm *ProtocolManager) { startIndexers := func(clientMode bool, pm *ProtocolManager) {
if clientMode { if clientMode {
@ -421,6 +482,7 @@ func newClientServerEnv(t *testing.T, blocks int, protocol int, waitIndexers fun
pm: pm, pm: pm,
rPeer: peer, rPeer: peer,
peers: peers, peers: peers,
backend: b,
chtIndexer: cIndexer, chtIndexer: cIndexer,
bloomIndexer: bIndexer, bloomIndexer: bIndexer,
bloomTrieIndexer: btIndexer, bloomTrieIndexer: btIndexer,
@ -429,6 +491,7 @@ func newClientServerEnv(t *testing.T, blocks int, protocol int, waitIndexers fun
pm: lpm, pm: lpm,
rPeer: lPeer, rPeer: lPeer,
peers: lPeers, peers: lPeers,
backend: lb,
chtIndexer: lcIndexer, chtIndexer: lcIndexer,
bloomIndexer: lbIndexer, bloomIndexer: lbIndexer,
bloomTrieIndexer: lbtIndexer, bloomTrieIndexer: lbtIndexer,

61
les/odr_requests.go
View File

@ -166,11 +166,13 @@ func (r *ReceiptsRequest) Validate(db ethdb.Database, msg *Msg) error {
receipt := receipts[0] receipt := receipts[0]
// Retrieve our stored header and validate receipt content against it // Retrieve our stored header and validate receipt content against it
header := rawdb.ReadHeader(db, r.Hash, r.Number) if r.Header == nil {
if header == nil { r.Header = rawdb.ReadHeader(db, r.Hash, r.Number)
}
if r.Header == nil {
return errHeaderUnavailable return errHeaderUnavailable
} }
if header.ReceiptHash != types.DeriveSha(receipt) { if r.Header.ReceiptHash != types.DeriveSha(receipt) {
return errReceiptHashMismatch return errReceiptHashMismatch
} }
// Validations passed, store and return // Validations passed, store and return
@ -323,7 +325,11 @@ func (r *ChtRequest) CanSend(peer *peer) bool {
peer.lock.RLock() peer.lock.RLock()
defer peer.lock.RUnlock() defer peer.lock.RUnlock()
return peer.headInfo.Number >= r.Config.ChtConfirms && r.ChtNum <= (peer.headInfo.Number-r.Config.ChtConfirms)/r.Config.ChtSize if r.Untrusted {
return peer.headInfo.Number >= r.BlockNum && peer.id == r.PeerId
} else {
return peer.headInfo.Number >= r.Config.ChtConfirms && r.ChtNum <= (peer.headInfo.Number-r.Config.ChtConfirms)/r.Config.ChtSize
}
} }
// Request sends an ODR request to the LES network (implementation of LesOdrRequest) // Request sends an ODR request to the LES network (implementation of LesOdrRequest)
@ -364,32 +370,37 @@ func (r *ChtRequest) Validate(db ethdb.Database, msg *Msg) error {
} }
// Verify the CHT // Verify the CHT
var encNumber [8]byte // Note: For untrusted CHT request, there is no proof response but
binary.BigEndian.PutUint64(encNumber[:], r.BlockNum) // header data.
reads := &readTraceDB{db: nodeSet}
value, _, err := trie.VerifyProof(r.ChtRoot, encNumber[:], reads)
if err != nil {
return fmt.Errorf("merkle proof verification failed: %v", err)
}
if len(reads.reads) != nodeSet.KeyCount() {
return errUselessNodes
}
var node light.ChtNode var node light.ChtNode
if err := rlp.DecodeBytes(value, &node); err != nil { if !r.Untrusted {
return err var encNumber [8]byte
} binary.BigEndian.PutUint64(encNumber[:], r.BlockNum)
if node.Hash != header.Hash() {
return errCHTHashMismatch reads := &readTraceDB{db: nodeSet}
} value, _, err := trie.VerifyProof(r.ChtRoot, encNumber[:], reads)
if r.BlockNum != header.Number.Uint64() { if err != nil {
return errCHTNumberMismatch return fmt.Errorf("merkle proof verification failed: %v", err)
}
if len(reads.reads) != nodeSet.KeyCount() {
return errUselessNodes
}
if err := rlp.DecodeBytes(value, &node); err != nil {
return err
}
if node.Hash != header.Hash() {
return errCHTHashMismatch
}
if r.BlockNum != header.Number.Uint64() {
return errCHTNumberMismatch
}
} }
// Verifications passed, store and return // Verifications passed, store and return
r.Header = header r.Header = header
r.Proof = nodeSet r.Proof = nodeSet
r.Td = node.Td r.Td = node.Td // For untrusted request, td here is nil, todo improve the les/2 protocol
return nil return nil
} }

8
les/odr_test.go
View File

@ -78,7 +78,7 @@ func TestOdrAccountsLes2(t *testing.T) { testOdr(t, 2, 1, true, odrAccounts) }
func odrAccounts(ctx context.Context, db ethdb.Database, config *params.ChainConfig, bc *core.BlockChain, lc *light.LightChain, bhash common.Hash) []byte { func odrAccounts(ctx context.Context, db ethdb.Database, config *params.ChainConfig, bc *core.BlockChain, lc *light.LightChain, bhash common.Hash) []byte {
dummyAddr := common.HexToAddress("1234567812345678123456781234567812345678") dummyAddr := common.HexToAddress("1234567812345678123456781234567812345678")
acc := []common.Address{testBankAddress, acc1Addr, acc2Addr, dummyAddr} acc := []common.Address{bankAddr, userAddr1, userAddr2, dummyAddr}
var ( var (
res []byte res []byte
@ -121,7 +121,7 @@ func odrContractCall(ctx context.Context, db ethdb.Database, config *params.Chai
statedb, err := state.New(header.Root, state.NewDatabase(db)) statedb, err := state.New(header.Root, state.NewDatabase(db))
if err == nil { if err == nil {
from := statedb.GetOrNewStateObject(testBankAddress) from := statedb.GetOrNewStateObject(bankAddr)
from.SetBalance(math.MaxBig256) from.SetBalance(math.MaxBig256)
msg := callmsg{types.NewMessage(from.Address(), &testContractAddr, 0, new(big.Int), 100000, new(big.Int), data, false)} msg := callmsg{types.NewMessage(from.Address(), &testContractAddr, 0, new(big.Int), 100000, new(big.Int), data, false)}
@ -137,8 +137,8 @@ func odrContractCall(ctx context.Context, db ethdb.Database, config *params.Chai
} else { } else {
header := lc.GetHeaderByHash(bhash) header := lc.GetHeaderByHash(bhash)
state := light.NewState(ctx, header, lc.Odr()) state := light.NewState(ctx, header, lc.Odr())
state.SetBalance(testBankAddress, math.MaxBig256) state.SetBalance(bankAddr, math.MaxBig256)
msg := callmsg{types.NewMessage(testBankAddress, &testContractAddr, 0, new(big.Int), 100000, new(big.Int), data, false)} msg := callmsg{types.NewMessage(bankAddr, &testContractAddr, 0, new(big.Int), 100000, new(big.Int), data, false)}
context := core.NewEVMContext(msg, header, lc, nil) context := core.NewEVMContext(msg, header, lc, nil)
vmenv := vm.NewEVM(context, state, config, vm.Config{}) vmenv := vm.NewEVM(context, state, config, vm.Config{})
gp := new(core.GasPool).AddGas(math.MaxUint64) gp := new(core.GasPool).AddGas(math.MaxUint64)

27
les/peer.go
View File

@ -33,6 +33,7 @@ import (
"github.com/ethereum/go-ethereum/les/flowcontrol" "github.com/ethereum/go-ethereum/les/flowcontrol"
"github.com/ethereum/go-ethereum/light" "github.com/ethereum/go-ethereum/light"
"github.com/ethereum/go-ethereum/p2p" "github.com/ethereum/go-ethereum/p2p"
"github.com/ethereum/go-ethereum/params"
"github.com/ethereum/go-ethereum/rlp" "github.com/ethereum/go-ethereum/rlp"
) )
@ -79,6 +80,10 @@ type peer struct {
announceType uint64 announceType uint64
// Checkpoint relative fields
checkpoint params.TrustedCheckpoint
checkpointNumber uint64
id string id string
headInfo *announceData headInfo *announceData
@ -575,6 +580,14 @@ func (p *peer) Handshake(td *big.Int, head common.Hash, headNum uint64, genesis
send = send.add("flowControl/MRC", costList) send = send.add("flowControl/MRC", costList)
p.fcCosts = costList.decode(ProtocolLengths[uint(p.version)]) p.fcCosts = costList.decode(ProtocolLengths[uint(p.version)])
p.fcParams = server.defParams p.fcParams = server.defParams
if server.protocolManager != nil && server.protocolManager.reg != nil && server.protocolManager.reg.isRunning() {
cp, height := server.protocolManager.reg.stableCheckpoint()
if cp != nil {
send = send.add("checkpoint/value", cp)
send = send.add("checkpoint/registerHeight", height)
}
}
} else { } else {
//on client node //on client node
p.announceType = announceTypeSimple p.announceType = announceTypeSimple
@ -658,20 +671,24 @@ func (p *peer) Handshake(td *big.Int, head common.Hash, headNum uint64, genesis
return errResp(ErrUselessPeer, "peer cannot serve requests") return errResp(ErrUselessPeer, "peer cannot serve requests")
} }
var params flowcontrol.ServerParams var sParams flowcontrol.ServerParams
if err := recv.get("flowControl/BL", &params.BufLimit); err != nil { if err := recv.get("flowControl/BL", &sParams.BufLimit); err != nil {
return err return err
} }
if err := recv.get("flowControl/MRR", &params.MinRecharge); err != nil { if err := recv.get("flowControl/MRR", &sParams.MinRecharge); err != nil {
return err return err
} }
var MRC RequestCostList var MRC RequestCostList
if err := recv.get("flowControl/MRC", &MRC); err != nil { if err := recv.get("flowControl/MRC", &MRC); err != nil {
return err return err
} }
p.fcParams = params p.fcParams = sParams
p.fcServer = flowcontrol.NewServerNode(params, &mclock.System{}) p.fcServer = flowcontrol.NewServerNode(sParams, &mclock.System{})
p.fcCosts = MRC.decode(ProtocolLengths[uint(p.version)]) p.fcCosts = MRC.decode(ProtocolLengths[uint(p.version)])
recv.get("checkpoint/value", &p.checkpoint)
recv.get("checkpoint/registerHeight", &p.checkpointNumber)
if !p.isOnlyAnnounce { if !p.isOnlyAnnounce {
for msgCode := range reqAvgTimeCost { for msgCode := range reqAvgTimeCost {
if p.fcCosts[msgCode] == nil { if p.fcCosts[msgCode] == nil {

2
les/request_test.go
View File

@ -28,7 +28,7 @@ import (
"github.com/ethereum/go-ethereum/light" "github.com/ethereum/go-ethereum/light"
) )
var testBankSecureTrieKey = secAddr(testBankAddress) var testBankSecureTrieKey = secAddr(bankAddr)
func secAddr(addr common.Address) []byte { func secAddr(addr common.Address) []byte {
return crypto.Keccak256(addr[:]) return crypto.Keccak256(addr[:])

97
les/server.go
View File

@ -21,6 +21,7 @@ import (
"sync" "sync"
"time" "time"
"github.com/ethereum/go-ethereum/accounts/abi/bind"
"github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/common/mclock" "github.com/ethereum/go-ethereum/common/mclock"
"github.com/ethereum/go-ethereum/core" "github.com/ethereum/go-ethereum/core"
@ -72,68 +73,38 @@ type LesServer struct {
priorityClientPool *priorityClientPool priorityClientPool *priorityClientPool
} }
func NewLesServer(eth *eth.Ethereum, config *eth.Config) (*LesServer, error) { func NewLesServer(e *eth.Ethereum, config *eth.Config) (*LesServer, error) {
var csvLogger *csvlogger.Logger var csvLogger *csvlogger.Logger
if logFileName != "" { if logFileName != "" {
csvLogger = csvlogger.NewLogger(logFileName, time.Second*10, "event, peerId") csvLogger = csvlogger.NewLogger(logFileName, time.Second*10, "event, peerId")
} }
quitSync := make(chan struct{})
pm, err := NewProtocolManager(
eth.BlockChain().Config(),
light.DefaultServerIndexerConfig,
false,
config.NetworkId,
eth.EventMux(),
eth.Engine(),
newPeerSet(),
eth.BlockChain(),
eth.TxPool(),
eth.ChainDb(),
nil,
nil,
nil,
quitSync,
new(sync.WaitGroup),
config.ULC,
eth.Synced)
if err != nil {
return nil, err
}
if logProtocolHandler {
pm.logger = csvLogger
}
requestLogger := csvLogger requestLogger := csvLogger
if !logRequestServing { if !logRequestServing {
requestLogger = nil requestLogger = nil
} }
pm.servingQueue = newServingQueue(int64(time.Millisecond*10), float64(config.LightServ)/100, requestLogger)
lesTopics := make([]discv5.Topic, len(AdvertiseProtocolVersions)) lesTopics := make([]discv5.Topic, len(AdvertiseProtocolVersions))
for i, pv := range AdvertiseProtocolVersions { for i, pv := range AdvertiseProtocolVersions {
lesTopics[i] = lesTopic(eth.BlockChain().Genesis().Hash(), pv) lesTopics[i] = lesTopic(e.BlockChain().Genesis().Hash(), pv)
} }
quitSync := make(chan struct{})
srv := &LesServer{ srv := &LesServer{
lesCommons: lesCommons{ lesCommons: lesCommons{
config: config, config: config,
chainDb: eth.ChainDb(),
iConfig: light.DefaultServerIndexerConfig, iConfig: light.DefaultServerIndexerConfig,
chtIndexer: light.NewChtIndexer(eth.ChainDb(), nil, params.CHTFrequency, params.HelperTrieProcessConfirmations), chainDb: e.ChainDb(),
bloomTrieIndexer: light.NewBloomTrieIndexer(eth.ChainDb(), nil, params.BloomBitsBlocks, params.BloomTrieFrequency), chtIndexer: light.NewChtIndexer(e.ChainDb(), nil, params.CHTFrequency, params.HelperTrieProcessConfirmations),
protocolManager: pm, bloomTrieIndexer: light.NewBloomTrieIndexer(e.ChainDb(), nil, params.BloomBitsBlocks, params.BloomTrieFrequency),
}, },
archiveMode: eth.ArchiveMode(), archiveMode: e.ArchiveMode(),
quitSync: quitSync, quitSync: quitSync,
lesTopics: lesTopics, lesTopics: lesTopics,
onlyAnnounce: config.OnlyAnnounce, onlyAnnounce: config.OnlyAnnounce,
csvLogger: csvLogger, csvLogger: csvLogger,
logTotalCap: requestLogger.NewChannel("totalCapacity", 0.01), logTotalCap: requestLogger.NewChannel("totalCapacity", 0.01),
} }
srv.costTracker, srv.minCapacity = newCostTracker(eth.ChainDb(), config, requestLogger) srv.costTracker, srv.minCapacity = newCostTracker(e.ChainDb(), config, requestLogger)
logger := log.New() logger := log.New()
pm.server = srv
srv.thcNormal = config.LightServ * 4 / 100 srv.thcNormal = config.LightServ * 4 / 100
if srv.thcNormal < 4 { if srv.thcNormal < 4 {
srv.thcNormal = 4 srv.thcNormal = 4
@ -141,22 +112,31 @@ func NewLesServer(eth *eth.Ethereum, config *eth.Config) (*LesServer, error) {
srv.thcBlockProcessing = config.LightServ/100 + 1 srv.thcBlockProcessing = config.LightServ/100 + 1
srv.fcManager = flowcontrol.NewClientManager(nil, &mclock.System{}) srv.fcManager = flowcontrol.NewClientManager(nil, &mclock.System{})
chtSectionCount, _, _ := srv.chtIndexer.Sections() checkpoint := srv.latestLocalCheckpoint()
if chtSectionCount != 0 { if !checkpoint.Empty() {
chtLastSection := chtSectionCount - 1 logger.Info("Loaded latest checkpoint", "section", checkpoint.SectionIndex, "head", checkpoint.SectionHead,
chtSectionHead := srv.chtIndexer.SectionHead(chtLastSection) "chtroot", checkpoint.CHTRoot, "bloomroot", checkpoint.BloomRoot)
chtRoot := light.GetChtRoot(pm.chainDb, chtLastSection, chtSectionHead)
logger.Info("Loaded CHT", "section", chtLastSection, "head", chtSectionHead, "root", chtRoot)
}
bloomTrieSectionCount, _, _ := srv.bloomTrieIndexer.Sections()
if bloomTrieSectionCount != 0 {
bloomTrieLastSection := bloomTrieSectionCount - 1
bloomTrieSectionHead := srv.bloomTrieIndexer.SectionHead(bloomTrieLastSection)
bloomTrieRoot := light.GetBloomTrieRoot(pm.chainDb, bloomTrieLastSection, bloomTrieSectionHead)
logger.Info("Loaded bloom trie", "section", bloomTrieLastSection, "head", bloomTrieSectionHead, "root", bloomTrieRoot)
} }
srv.chtIndexer.Start(eth.BlockChain()) srv.chtIndexer.Start(e.BlockChain())
oracle := config.CheckpointOracle
if oracle == nil {
oracle = params.CheckpointOracles[e.BlockChain().Genesis().Hash()]
}
registrar := newCheckpointOracle(oracle, srv.getLocalCheckpoint)
// TODO(rjl493456442) Checkpoint is useless for les server, separate handler for client and server.
pm, err := NewProtocolManager(e.BlockChain().Config(), nil, light.DefaultServerIndexerConfig, config.ULC, false, config.NetworkId, e.EventMux(), newPeerSet(), e.BlockChain(), e.TxPool(), e.ChainDb(), nil, nil, registrar, quitSync, new(sync.WaitGroup), e.Synced)
if err != nil {
return nil, err
}
srv.protocolManager = pm
if logProtocolHandler {
pm.logger = csvLogger
}
pm.servingQueue = newServingQueue(int64(time.Millisecond*10), float64(config.LightServ)/100, requestLogger)
pm.server = srv
return srv, nil return srv, nil
} }
@ -168,6 +148,12 @@ func (s *LesServer) APIs() []rpc.API {
Service: NewPrivateLightServerAPI(s), Service: NewPrivateLightServerAPI(s),
Public: false, Public: false,
}, },
{
Namespace: "les",
Version: "1.0",
Service: NewPrivateLightAPI(&s.lesCommons, s.protocolManager.reg),
Public: false,
},
} }
} }
@ -292,6 +278,13 @@ func (s *LesServer) SetBloomBitsIndexer(bloomIndexer *core.ChainIndexer) {
bloomIndexer.AddChildIndexer(s.bloomTrieIndexer) bloomIndexer.AddChildIndexer(s.bloomTrieIndexer)
} }
// SetClient sets the rpc client and starts running checkpoint contract if it is not yet watched.
func (s *LesServer) SetContractBackend(backend bind.ContractBackend) {
if s.protocolManager.reg != nil {
s.protocolManager.reg.start(backend)
}
}
// Stop stops the LES service // Stop stops the LES service
func (s *LesServer) Stop() { func (s *LesServer) Stop() {
s.fcManager.Stop() s.fcManager.Stop()

157
les/sync.go
View File

@ -18,11 +18,29 @@ package les
import ( import (
"context" "context"
"errors"
"time" "time"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/core/rawdb" "github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/eth/downloader" "github.com/ethereum/go-ethereum/eth/downloader"
"github.com/ethereum/go-ethereum/light" "github.com/ethereum/go-ethereum/light"
"github.com/ethereum/go-ethereum/log"
)
var errInvalidCheckpoint = errors.New("invalid advertised checkpoint")
const (
// lightSync starts syncing from the current highest block.
// If the chain is empty, syncing the entire header chain.
lightSync = iota
// legacyCheckpointSync starts syncing from a hardcoded checkpoint.
legacyCheckpointSync
// checkpointSync starts syncing from a checkpoint signed by trusted
// signer or hardcoded checkpoint for compatibility.
checkpointSync
) )
// syncer is responsible for periodically synchronising with the network, both // syncer is responsible for periodically synchronising with the network, both
@ -54,26 +72,141 @@ func (pm *ProtocolManager) syncer() {
} }
} }
func (pm *ProtocolManager) needToSync(peerHead blockInfo) bool { // validateCheckpoint verifies the advertised checkpoint by peer is valid or not.
head := pm.blockchain.CurrentHeader() //
currentTd := rawdb.ReadTd(pm.chainDb, head.Hash(), head.Number.Uint64()) // Each network has several hard-coded checkpoint signer addresses. Only the
return currentTd != nil && peerHead.Td.Cmp(currentTd) > 0 // checkpoint issued by the specified signer is considered valid.
//
// In addition to the checkpoint registered in the registrar contract, there are
// several legacy hardcoded checkpoints in our codebase. These checkpoints are
// also considered as valid.
func (pm *ProtocolManager) validateCheckpoint(peer *peer) error {
ctx, cancel := context.WithTimeout(context.Background(), time.Second*10)
defer cancel()
// Fetch the block header corresponding to the checkpoint registration.
cp := peer.checkpoint
header, err := light.GetUntrustedHeaderByNumber(ctx, pm.odr, peer.checkpointNumber, peer.id)
if err != nil {
return err
}
// Fetch block logs associated with the block header.
logs, err := light.GetUntrustedBlockLogs(ctx, pm.odr, header)
if err != nil {
return err
}
events := pm.reg.contract.LookupCheckpointEvents(logs, cp.SectionIndex, cp.Hash())
if len(events) == 0 {
return errInvalidCheckpoint
}
var (
index = events[0].Index
hash = events[0].CheckpointHash
signatures [][]byte
)
for _, event := range events {
signatures = append(signatures, append(event.R[:], append(event.S[:], event.V)...))
}
valid, signers := pm.reg.verifySigners(index, hash, signatures)
if !valid {
return errInvalidCheckpoint
}
log.Warn("Verified advertised checkpoint", "peer", peer.id, "signers", len(signers))
return nil
} }
// synchronise tries to sync up our local block chain with a remote peer. // synchronise tries to sync up our local chain with a remote peer.
func (pm *ProtocolManager) synchronise(peer *peer) { func (pm *ProtocolManager) synchronise(peer *peer) {
// Short circuit if no peers are available // Short circuit if the peer is nil.
if peer == nil { if peer == nil {
return return
} }
// Make sure the peer's TD is higher than our own. // Make sure the peer's TD is higher than our own.
if !pm.needToSync(peer.headBlockInfo()) { latest := pm.blockchain.CurrentHeader()
currentTd := rawdb.ReadTd(pm.chainDb, latest.Hash(), latest.Number.Uint64())
if currentTd != nil && peer.headBlockInfo().Td.Cmp(currentTd) < 0 {
return return
} }
// Recap the checkpoint.
//
// The light client may be connected to several different versions of the server.
// (1) Old version server which can not provide stable checkpoint in the handshake packet.
// => Use hardcoded checkpoint or empty checkpoint
// (2) New version server but simple checkpoint syncing is not enabled(e.g. mainnet, new testnet or private network)
// => Use hardcoded checkpoint or empty checkpoint
// (3) New version server but the provided stable checkpoint is even lower than the hardcoded one.
// => Use hardcoded checkpoint
// (4) New version server with valid and higher stable checkpoint
// => Use provided checkpoint
var checkpoint = &peer.checkpoint
var hardcoded bool
if pm.checkpoint != nil && pm.checkpoint.SectionIndex >= peer.checkpoint.SectionIndex {
checkpoint = pm.checkpoint // Use the hardcoded one.
hardcoded = true
}
// Determine whether we should run checkpoint syncing or normal light syncing.
//
// Here has four situations that we will disable the checkpoint syncing:
//
// 1. The checkpoint is empty
// 2. The latest head block of the local chain is above the checkpoint.
// 3. The checkpoint is hardcoded(recap with local hardcoded checkpoint)
// 4. For some networks the checkpoint syncing is not activated.
mode := checkpointSync
switch {
case checkpoint.Empty():
mode = lightSync
log.Debug("Disable checkpoint syncing", "reason", "empty checkpoint")
case latest.Number.Uint64() >= (checkpoint.SectionIndex+1)*pm.iConfig.ChtSize-1:
mode = lightSync
log.Debug("Disable checkpoint syncing", "reason", "local chain beyond the checkpoint")
case hardcoded:
mode = legacyCheckpointSync
log.Debug("Disable checkpoint syncing", "reason", "checkpoint is hardcoded")
case pm.reg == nil || !pm.reg.isRunning():
mode = legacyCheckpointSync
log.Debug("Disable checkpoint syncing", "reason", "checkpoint syncing is not activated")
}
// Notify testing framework if syncing has completed(for testing purpose).
defer func() {
if pm.reg != nil && pm.reg.syncDoneHook != nil {
pm.reg.syncDoneHook()
}
}()
start := time.Now()
if mode == checkpointSync || mode == legacyCheckpointSync {
// Validate the advertised checkpoint
if mode == legacyCheckpointSync {
checkpoint = pm.checkpoint
} else if mode == checkpointSync {
if err := pm.validateCheckpoint(peer); err != nil {
log.Debug("Failed to validate checkpoint", "reason", err)
pm.removePeer(peer.id)
return
}
pm.blockchain.(*light.LightChain).AddTrustedCheckpoint(checkpoint)
}
log.Debug("Checkpoint syncing start", "peer", peer.id, "checkpoint", checkpoint.SectionIndex)
ctx, cancel := context.WithTimeout(context.Background(), time.Second*5) // Fetch the start point block header.
defer cancel() //
pm.blockchain.(*light.LightChain).SyncCht(ctx) // For the ethash consensus engine, the start header is the block header
pm.downloader.Synchronise(peer.id, peer.Head(), peer.Td(), downloader.LightSync) // of the checkpoint.
//
// For the clique consensus engine, the start header is the block header
// of the latest epoch covered by checkpoint.
ctx, cancel := context.WithTimeout(context.Background(), time.Second*5)
defer cancel()
if !checkpoint.Empty() && !pm.blockchain.(*light.LightChain).SyncCheckpoint(ctx, checkpoint) {
log.Debug("Sync checkpoint failed")
pm.removePeer(peer.id)
return
}
}
// Fetch the remaining block headers based on the current chain header.
if err := pm.downloader.Synchronise(peer.id, peer.Head(), peer.Td(), downloader.LightSync); err != nil {
log.Debug("Synchronise failed", "reason", err)
return
}
log.Debug("Synchronise finished", "elapsed", common.PrettyDuration(time.Since(start)))
} }

133
les/sync_test.go Normal file
View File

@ -0,0 +1,133 @@
// 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 <http://www.gnu.org/licenses/>.
package les
import (
"fmt"
"math/big"
"testing"
"time"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/light"
"github.com/ethereum/go-ethereum/params"
)
// Test light syncing which will download all headers from genesis.
func TestLightSyncingLes2(t *testing.T) { testCheckpointSyncing(t, 2, 0) }
func TestLightSyncingLes3(t *testing.T) { testCheckpointSyncing(t, 3, 0) }
// Test legacy checkpoint syncing which will download tail headers
// based on a hardcoded checkpoint.
func TestLegacyCheckpointSyncingLes2(t *testing.T) { testCheckpointSyncing(t, 2, 1) }
func TestLegacyCheckpointSyncingLes3(t *testing.T) { testCheckpointSyncing(t, 3, 1) }
// Test checkpoint syncing which will download tail headers based
// on a verified checkpoint.
func TestCheckpointSyncingLes2(t *testing.T) { testCheckpointSyncing(t, 2, 2) }
func TestCheckpointSyncingLes3(t *testing.T) { testCheckpointSyncing(t, 3, 2) }
func testCheckpointSyncing(t *testing.T, protocol int, syncMode int) {
config := light.TestServerIndexerConfig
waitIndexers := func(cIndexer, bIndexer, btIndexer *core.ChainIndexer) {
for {
cs, _, _ := cIndexer.Sections()
bts, _, _ := btIndexer.Sections()
if cs >= 1 && bts >= 1 {
break
}
time.Sleep(10 * time.Millisecond)
}
}
// Generate 512+4 blocks (totally 1 CHT sections)
server, client, tearDown := newClientServerEnv(t, int(config.ChtSize+config.ChtConfirms), protocol, waitIndexers, false)
defer tearDown()
expected := config.ChtSize + config.ChtConfirms
// Checkpoint syncing or legacy checkpoint syncing.
if syncMode == 1 || syncMode == 2 {
// Assemble checkpoint 0
s, _, head := server.chtIndexer.Sections()
cp := &params.TrustedCheckpoint{
SectionIndex: 0,
SectionHead: head,
CHTRoot: light.GetChtRoot(server.db, s-1, head),
BloomRoot: light.GetBloomTrieRoot(server.db, s-1, head),
}
if syncMode == 1 {
// Register the assembled checkpoint as hardcoded one.
client.pm.checkpoint = cp
client.pm.blockchain.(*light.LightChain).AddTrustedCheckpoint(cp)
} else {
// Register the assembled checkpoint into oracle.
header := server.backend.Blockchain().CurrentHeader()
data := append([]byte{0x19, 0x00}, append(registrarAddr.Bytes(), append([]byte{0, 0, 0, 0, 0, 0, 0, 0}, cp.Hash().Bytes()...)...)...)
sig, _ := crypto.Sign(crypto.Keccak256(data), signerKey)
sig[64] += 27 // Transform V from 0/1 to 27/28 according to the yellow paper
if _, err := server.pm.reg.contract.RegisterCheckpoint(signerKey, cp.SectionIndex, cp.Hash().Bytes(), new(big.Int).Sub(header.Number, big.NewInt(1)), header.ParentHash, [][]byte{sig}); err != nil {
t.Error("register checkpoint failed", err)
}
server.backend.Commit()
// Wait for the checkpoint registration
for {
_, hash, _, err := server.pm.reg.contract.Contract().GetLatestCheckpoint(nil)
if err != nil || hash == [32]byte{} {
time.Sleep(100 * time.Millisecond)
continue
}
break
}
expected += 1
}
}
done := make(chan error)
client.pm.reg.syncDoneHook = func() {
header := client.pm.blockchain.CurrentHeader()
if header.Number.Uint64() == expected {
done <- nil
} else {
done <- fmt.Errorf("blockchain length mismatch, want %d, got %d", expected, header.Number)
}
}
// Create connected peer pair.
peer, err1, lPeer, err2 := newTestPeerPair("peer", protocol, server.pm, client.pm)
select {
case <-time.After(time.Millisecond * 100):
case err := <-err1:
t.Fatalf("peer 1 handshake error: %v", err)
case err := <-err2:
t.Fatalf("peer 2 handshake error: %v", err)
}
server.rPeer, client.rPeer = peer, lPeer
select {
case err := <-done:
if err != nil {
t.Error("sync failed", err)
}
return
case <-time.NewTimer(10 * time.Second).C:
t.Error("checkpoint syncing timeout")
}
}

0
les/transactions.rlp
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20
les/txrelay.go
View File

@ -30,7 +30,7 @@ type ltrInfo struct {
sentTo map[*peer]struct{} sentTo map[*peer]struct{}
} }
type LesTxRelay struct { type lesTxRelay struct {
txSent map[common.Hash]*ltrInfo txSent map[common.Hash]*ltrInfo
txPending map[common.Hash]struct{} txPending map[common.Hash]struct{}
ps *peerSet ps *peerSet
@ -42,8 +42,8 @@ type LesTxRelay struct {
retriever *retrieveManager retriever *retrieveManager
} }
func NewLesTxRelay(ps *peerSet, retriever *retrieveManager) *LesTxRelay { func newLesTxRelay(ps *peerSet, retriever *retrieveManager) *lesTxRelay {
r := &LesTxRelay{ r := &lesTxRelay{
txSent: make(map[common.Hash]*ltrInfo), txSent: make(map[common.Hash]*ltrInfo),
txPending: make(map[common.Hash]struct{}), txPending: make(map[common.Hash]struct{}),
ps: ps, ps: ps,
@ -54,18 +54,18 @@ func NewLesTxRelay(ps *peerSet, retriever *retrieveManager) *LesTxRelay {
return r return r
} }
func (self *LesTxRelay) Stop() { func (self *lesTxRelay) Stop() {
close(self.stop) close(self.stop)
} }
func (self *LesTxRelay) registerPeer(p *peer) { func (self *lesTxRelay) registerPeer(p *peer) {
self.lock.Lock() self.lock.Lock()
defer self.lock.Unlock() defer self.lock.Unlock()
self.peerList = self.ps.AllPeers() self.peerList = self.ps.AllPeers()
} }
func (self *LesTxRelay) unregisterPeer(p *peer) { func (self *lesTxRelay) unregisterPeer(p *peer) {
self.lock.Lock() self.lock.Lock()
defer self.lock.Unlock() defer self.lock.Unlock()
@ -74,7 +74,7 @@ func (self *LesTxRelay) unregisterPeer(p *peer) {
// send sends a list of transactions to at most a given number of peers at // send sends a list of transactions to at most a given number of peers at
// once, never resending any particular transaction to the same peer twice // once, never resending any particular transaction to the same peer twice
func (self *LesTxRelay) send(txs types.Transactions, count int) { func (self *lesTxRelay) send(txs types.Transactions, count int) {
sendTo := make(map[*peer]types.Transactions) sendTo := make(map[*peer]types.Transactions)
self.peerStartPos++ // rotate the starting position of the peer list self.peerStartPos++ // rotate the starting position of the peer list
@ -143,14 +143,14 @@ func (self *LesTxRelay) send(txs types.Transactions, count int) {
} }
} }
func (self *LesTxRelay) Send(txs types.Transactions) { func (self *lesTxRelay) Send(txs types.Transactions) {
self.lock.Lock() self.lock.Lock()
defer self.lock.Unlock() defer self.lock.Unlock()
self.send(txs, 3) self.send(txs, 3)
} }
func (self *LesTxRelay) NewHead(head common.Hash, mined []common.Hash, rollback []common.Hash) { func (self *lesTxRelay) NewHead(head common.Hash, mined []common.Hash, rollback []common.Hash) {
self.lock.Lock() self.lock.Lock()
defer self.lock.Unlock() defer self.lock.Unlock()
@ -173,7 +173,7 @@ func (self *LesTxRelay) NewHead(head common.Hash, mined []common.Hash, rollback
} }
} }
func (self *LesTxRelay) Discard(hashes []common.Hash) { func (self *lesTxRelay) Discard(hashes []common.Hash) {
self.lock.Lock() self.lock.Lock()
defer self.lock.Unlock() defer self.lock.Unlock()

21
les/ulc_test.go
View File

@ -26,7 +26,6 @@ import (
"time" "time"
"github.com/ethereum/go-ethereum/common/mclock" "github.com/ethereum/go-ethereum/common/mclock"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/core/rawdb" "github.com/ethereum/go-ethereum/core/rawdb"
"github.com/ethereum/go-ethereum/crypto" "github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/eth" "github.com/ethereum/go-ethereum/eth"
@ -36,7 +35,7 @@ import (
) )
func TestULCSyncWithOnePeer(t *testing.T) { func TestULCSyncWithOnePeer(t *testing.T) {
f := newFullPeerPair(t, 1, 4, testChainGen) f := newFullPeerPair(t, 1, 4)
ulcConfig := &eth.ULCConfig{ ulcConfig := &eth.ULCConfig{
MinTrustedFraction: 100, MinTrustedFraction: 100,
TrustedServers: []string{f.Node.String()}, TrustedServers: []string{f.Node.String()},
@ -63,7 +62,7 @@ func TestULCSyncWithOnePeer(t *testing.T) {
} }
func TestULCReceiveAnnounce(t *testing.T) { func TestULCReceiveAnnounce(t *testing.T) {
f := newFullPeerPair(t, 1, 4, testChainGen) f := newFullPeerPair(t, 1, 4)
ulcConfig := &eth.ULCConfig{ ulcConfig := &eth.ULCConfig{
MinTrustedFraction: 100, MinTrustedFraction: 100,
TrustedServers: []string{f.Node.String()}, TrustedServers: []string{f.Node.String()},
@ -100,8 +99,8 @@ func TestULCReceiveAnnounce(t *testing.T) {
} }
func TestULCShouldNotSyncWithTwoPeersOneHaveEmptyChain(t *testing.T) { func TestULCShouldNotSyncWithTwoPeersOneHaveEmptyChain(t *testing.T) {
f1 := newFullPeerPair(t, 1, 4, testChainGen) f1 := newFullPeerPair(t, 1, 4)
f2 := newFullPeerPair(t, 2, 0, nil) f2 := newFullPeerPair(t, 2, 0)
ulcConf := &ulc{minTrustedFraction: 100, trustedKeys: make(map[string]struct{})} ulcConf := &ulc{minTrustedFraction: 100, trustedKeys: make(map[string]struct{})}
ulcConf.trustedKeys[f1.Node.ID().String()] = struct{}{} ulcConf.trustedKeys[f1.Node.ID().String()] = struct{}{}
ulcConf.trustedKeys[f2.Node.ID().String()] = struct{}{} ulcConf.trustedKeys[f2.Node.ID().String()] = struct{}{}
@ -131,9 +130,9 @@ func TestULCShouldNotSyncWithTwoPeersOneHaveEmptyChain(t *testing.T) {
} }
func TestULCShouldNotSyncWithThreePeersOneHaveEmptyChain(t *testing.T) { func TestULCShouldNotSyncWithThreePeersOneHaveEmptyChain(t *testing.T) {
f1 := newFullPeerPair(t, 1, 3, testChainGen) f1 := newFullPeerPair(t, 1, 3)
f2 := newFullPeerPair(t, 2, 4, testChainGen) f2 := newFullPeerPair(t, 2, 4)
f3 := newFullPeerPair(t, 3, 0, nil) f3 := newFullPeerPair(t, 3, 0)
ulcConfig := &eth.ULCConfig{ ulcConfig := &eth.ULCConfig{
MinTrustedFraction: 60, MinTrustedFraction: 60,
@ -211,10 +210,10 @@ func connectPeers(full, light pairPeer, version int) (*peer, *peer, error) {
} }
// newFullPeerPair creates node with full sync mode // newFullPeerPair creates node with full sync mode
func newFullPeerPair(t *testing.T, index int, numberOfblocks int, chainGen func(int, *core.BlockGen)) pairPeer { func newFullPeerPair(t *testing.T, index int, numberOfblocks int) pairPeer {
db := rawdb.NewMemoryDatabase() db := rawdb.NewMemoryDatabase()
pmFull := newTestProtocolManagerMust(t, false, numberOfblocks, chainGen, nil, nil, db, nil) pmFull, _ := newTestProtocolManagerMust(t, false, numberOfblocks, nil, nil, nil, db, nil)
peerPairFull := pairPeer{ peerPairFull := pairPeer{
Name: "full node", Name: "full node",
@ -238,7 +237,7 @@ func newLightPeer(t *testing.T, ulcConfig *eth.ULCConfig) pairPeer {
odr := NewLesOdr(ldb, light.DefaultClientIndexerConfig, rm) odr := NewLesOdr(ldb, light.DefaultClientIndexerConfig, rm)
pmLight := newTestProtocolManagerMust(t, true, 0, nil, odr, peers, ldb, ulcConfig) pmLight, _ := newTestProtocolManagerMust(t, true, 0, odr, nil, peers, ldb, ulcConfig)
peerPairLight := pairPeer{ peerPairLight := pairPeer{
Name: "ulc node", Name: "ulc node",
PM: pmLight, PM: pmLight,

30
light/lightchain.go
View File

@ -77,7 +77,7 @@ type LightChain struct {
// NewLightChain returns a fully initialised light chain using information // NewLightChain returns a fully initialised light chain using information
// available in the database. It initialises the default Ethereum header // available in the database. It initialises the default Ethereum header
// validator. // validator.
func NewLightChain(odr OdrBackend, config *params.ChainConfig, engine consensus.Engine) (*LightChain, error) { func NewLightChain(odr OdrBackend, config *params.ChainConfig, engine consensus.Engine, checkpoint *params.TrustedCheckpoint) (*LightChain, error) {
bodyCache, _ := lru.New(bodyCacheLimit) bodyCache, _ := lru.New(bodyCacheLimit)
bodyRLPCache, _ := lru.New(bodyCacheLimit) bodyRLPCache, _ := lru.New(bodyCacheLimit)
blockCache, _ := lru.New(blockCacheLimit) blockCache, _ := lru.New(blockCacheLimit)
@ -101,8 +101,8 @@ func NewLightChain(odr OdrBackend, config *params.ChainConfig, engine consensus.
if bc.genesisBlock == nil { if bc.genesisBlock == nil {
return nil, core.ErrNoGenesis return nil, core.ErrNoGenesis
} }
if cp, ok := params.TrustedCheckpoints[bc.genesisBlock.Hash()]; ok { if checkpoint != nil {
bc.addTrustedCheckpoint(cp) bc.AddTrustedCheckpoint(checkpoint)
} }
if err := bc.loadLastState(); err != nil { if err := bc.loadLastState(); err != nil {
return nil, err return nil, err
@ -118,8 +118,8 @@ func NewLightChain(odr OdrBackend, config *params.ChainConfig, engine consensus.
return bc, nil return bc, nil
} }
// addTrustedCheckpoint adds a trusted checkpoint to the blockchain // AddTrustedCheckpoint adds a trusted checkpoint to the blockchain
func (lc *LightChain) addTrustedCheckpoint(cp *params.TrustedCheckpoint) { func (lc *LightChain) AddTrustedCheckpoint(cp *params.TrustedCheckpoint) {
if lc.odr.ChtIndexer() != nil { if lc.odr.ChtIndexer() != nil {
StoreChtRoot(lc.chainDb, cp.SectionIndex, cp.SectionHead, cp.CHTRoot) StoreChtRoot(lc.chainDb, cp.SectionIndex, cp.SectionHead, cp.CHTRoot)
lc.odr.ChtIndexer().AddCheckpoint(cp.SectionIndex, cp.SectionHead) lc.odr.ChtIndexer().AddCheckpoint(cp.SectionIndex, cp.SectionHead)
@ -131,7 +131,7 @@ func (lc *LightChain) addTrustedCheckpoint(cp *params.TrustedCheckpoint) {
if lc.odr.BloomIndexer() != nil { if lc.odr.BloomIndexer() != nil {
lc.odr.BloomIndexer().AddCheckpoint(cp.SectionIndex, cp.SectionHead) lc.odr.BloomIndexer().AddCheckpoint(cp.SectionIndex, cp.SectionHead)
} }
log.Info("Added trusted checkpoint", "chain", cp.Name, "block", (cp.SectionIndex+1)*lc.indexerConfig.ChtSize-1, "hash", cp.SectionHead) log.Info("Added trusted checkpoint", "block", (cp.SectionIndex+1)*lc.indexerConfig.ChtSize-1, "hash", cp.SectionHead)
} }
func (lc *LightChain) getProcInterrupt() bool { func (lc *LightChain) getProcInterrupt() bool {
@ -462,21 +462,21 @@ func (lc *LightChain) GetHeaderByNumberOdr(ctx context.Context, number uint64) (
// Config retrieves the header chain's chain configuration. // Config retrieves the header chain's chain configuration.
func (lc *LightChain) Config() *params.ChainConfig { return lc.hc.Config() } func (lc *LightChain) Config() *params.ChainConfig { return lc.hc.Config() }
func (lc *LightChain) SyncCht(ctx context.Context) bool { // SyncCheckpoint fetches the checkpoint point block header according to
// If we don't have a CHT indexer, abort // the checkpoint provided by the remote peer.
if lc.odr.ChtIndexer() == nil { //
return false // Note if we are running the clique, fetches the last epoch snapshot header
} // which covered by checkpoint.
// Ensure the remote CHT head is ahead of us func (lc *LightChain) SyncCheckpoint(ctx context.Context, checkpoint *params.TrustedCheckpoint) bool {
// Ensure the remote checkpoint head is ahead of us
head := lc.CurrentHeader().Number.Uint64() head := lc.CurrentHeader().Number.Uint64()
sections, _, _ := lc.odr.ChtIndexer().Sections()
latest := sections*lc.indexerConfig.ChtSize - 1 latest := (checkpoint.SectionIndex+1)*lc.indexerConfig.ChtSize - 1
if clique := lc.hc.Config().Clique; clique != nil { if clique := lc.hc.Config().Clique; clique != nil {
latest -= latest % clique.Epoch // epoch snapshot for clique latest -= latest % clique.Epoch // epoch snapshot for clique
} }
if head >= latest { if head >= latest {
return false return true
} }
// Retrieve the latest useful header and update to it // Retrieve the latest useful header and update to it
if header, err := GetHeaderByNumber(ctx, lc.odr, latest); header != nil && err == nil { if header, err := GetHeaderByNumber(ctx, lc.odr, latest); header != nil && err == nil {

6
light/lightchain_test.go
View File

@ -55,7 +55,7 @@ func newCanonical(n int) (ethdb.Database, *LightChain, error) {
db := rawdb.NewMemoryDatabase() db := rawdb.NewMemoryDatabase()
gspec := core.Genesis{Config: params.TestChainConfig} gspec := core.Genesis{Config: params.TestChainConfig}
genesis := gspec.MustCommit(db) genesis := gspec.MustCommit(db)
blockchain, _ := NewLightChain(&dummyOdr{db: db, indexerConfig: TestClientIndexerConfig}, gspec.Config, ethash.NewFaker()) blockchain, _ := NewLightChain(&dummyOdr{db: db, indexerConfig: TestClientIndexerConfig}, gspec.Config, ethash.NewFaker(), nil)
// Create and inject the requested chain // Create and inject the requested chain
if n == 0 { if n == 0 {
@ -75,7 +75,7 @@ func newTestLightChain() *LightChain {
Config: params.TestChainConfig, Config: params.TestChainConfig,
} }
gspec.MustCommit(db) gspec.MustCommit(db)
lc, err := NewLightChain(&dummyOdr{db: db}, gspec.Config, ethash.NewFullFaker()) lc, err := NewLightChain(&dummyOdr{db: db}, gspec.Config, ethash.NewFullFaker(), nil)
if err != nil { if err != nil {
panic(err) panic(err)
} }
@ -344,7 +344,7 @@ func TestReorgBadHeaderHashes(t *testing.T) {
defer func() { delete(core.BadHashes, headers[3].Hash()) }() defer func() { delete(core.BadHashes, headers[3].Hash()) }()
// Create a new LightChain and check that it rolled back the state. // Create a new LightChain and check that it rolled back the state.
ncm, err := NewLightChain(&dummyOdr{db: bc.chainDb}, params.TestChainConfig, ethash.NewFaker()) ncm, err := NewLightChain(&dummyOdr{db: bc.chainDb}, params.TestChainConfig, ethash.NewFaker(), nil)
if err != nil { if err != nil {
t.Fatalf("failed to create new chain manager: %v", err) t.Fatalf("failed to create new chain manager: %v", err)
} }

22
light/odr.go
View File

@ -122,19 +122,25 @@ func (req *BlockRequest) StoreResult(db ethdb.Database) {
// ReceiptsRequest is the ODR request type for retrieving block bodies // ReceiptsRequest is the ODR request type for retrieving block bodies
type ReceiptsRequest struct { type ReceiptsRequest struct {
OdrRequest OdrRequest
Hash common.Hash Untrusted bool // Indicator whether the result retrieved is trusted or not
Number uint64 Hash common.Hash
Receipts types.Receipts Number uint64
Header *types.Header
Receipts types.Receipts
} }
// StoreResult stores the retrieved data in local database // StoreResult stores the retrieved data in local database
func (req *ReceiptsRequest) StoreResult(db ethdb.Database) { func (req *ReceiptsRequest) StoreResult(db ethdb.Database) {
rawdb.WriteReceipts(db, req.Hash, req.Number, req.Receipts) if !req.Untrusted {
rawdb.WriteReceipts(db, req.Hash, req.Number, req.Receipts)
}
} }
// ChtRequest is the ODR request type for state/storage trie entries // ChtRequest is the ODR request type for state/storage trie entries
type ChtRequest struct { type ChtRequest struct {
OdrRequest OdrRequest
Untrusted bool // Indicator whether the result retrieved is trusted or not
PeerId string // The specified peer id from which to retrieve data.
Config *IndexerConfig Config *IndexerConfig
ChtNum, BlockNum uint64 ChtNum, BlockNum uint64
ChtRoot common.Hash ChtRoot common.Hash
@ -147,9 +153,11 @@ type ChtRequest struct {
func (req *ChtRequest) StoreResult(db ethdb.Database) { func (req *ChtRequest) StoreResult(db ethdb.Database) {
hash, num := req.Header.Hash(), req.Header.Number.Uint64() hash, num := req.Header.Hash(), req.Header.Number.Uint64()
rawdb.WriteHeader(db, req.Header) if !req.Untrusted {
rawdb.WriteTd(db, hash, num, req.Td) rawdb.WriteHeader(db, req.Header)
rawdb.WriteCanonicalHash(db, hash, num) rawdb.WriteTd(db, hash, num, req.Td)
rawdb.WriteCanonicalHash(db, hash, num)
}
} }
// BloomRequest is the ODR request type for retrieving bloom filters from a CHT structure // BloomRequest is the ODR request type for retrieving bloom filters from a CHT structure

2
light/odr_test.go
View File

@ -264,7 +264,7 @@ func testChainOdr(t *testing.T, protocol int, fn odrTestFn) {
} }
odr := &testOdr{sdb: sdb, ldb: ldb, indexerConfig: TestClientIndexerConfig} odr := &testOdr{sdb: sdb, ldb: ldb, indexerConfig: TestClientIndexerConfig}
lightchain, err := NewLightChain(odr, params.TestChainConfig, ethash.NewFullFaker()) lightchain, err := NewLightChain(odr, params.TestChainConfig, ethash.NewFullFaker(), nil)
if err != nil { if err != nil {
t.Fatal(err) t.Fatal(err)
} }

34
light/odr_util.go
View File

@ -69,6 +69,16 @@ func GetHeaderByNumber(ctx context.Context, odr OdrBackend, number uint64) (*typ
return r.Header, nil return r.Header, nil
} }
// GetUntrustedHeaderByNumber fetches specified block header without correctness checking.
// Note this function should only be used in light client checkpoint syncing.
func GetUntrustedHeaderByNumber(ctx context.Context, odr OdrBackend, number uint64, peerId string) (*types.Header, error) {
r := &ChtRequest{BlockNum: number, ChtNum: number / odr.IndexerConfig().ChtSize, Untrusted: true, PeerId: peerId, Config: odr.IndexerConfig()}
if err := odr.Retrieve(ctx, r); err != nil {
return nil, err
}
return r.Header, nil
}
func GetCanonicalHash(ctx context.Context, odr OdrBackend, number uint64) (common.Hash, error) { func GetCanonicalHash(ctx context.Context, odr OdrBackend, number uint64) (common.Hash, error) {
hash := rawdb.ReadCanonicalHash(odr.Database(), number) hash := rawdb.ReadCanonicalHash(odr.Database(), number)
if (hash != common.Hash{}) { if (hash != common.Hash{}) {
@ -169,6 +179,30 @@ func GetBlockLogs(ctx context.Context, odr OdrBackend, hash common.Hash, number
return logs, nil return logs, nil
} }
// GetUntrustedBlockLogs retrieves the logs generated by the transactions included in a
// block. The retrieved logs are regarded as untrusted and will not be stored in the
// database. This function should only be used in light client checkpoint syncing.
func GetUntrustedBlockLogs(ctx context.Context, odr OdrBackend, header *types.Header) ([][]*types.Log, error) {
// Retrieve the potentially incomplete receipts from disk or network
hash, number := header.Hash(), header.Number.Uint64()
receipts := rawdb.ReadRawReceipts(odr.Database(), hash, number)
if receipts == nil {
r := &ReceiptsRequest{Hash: hash, Number: number, Header: header, Untrusted: true}
if err := odr.Retrieve(ctx, r); err != nil {
return nil, err
}
receipts = r.Receipts
// Untrusted receipts won't be stored in the database. Therefore
// derived fields computation is unnecessary.
}
// Return the logs without deriving any computed fields on the receipts
logs := make([][]*types.Log, len(receipts))
for i, receipt := range receipts {
logs[i] = receipt.Logs
}
return logs, nil
}
// GetBloomBits retrieves a batch of compressed bloomBits vectors belonging to the given bit index and section indexes // GetBloomBits retrieves a batch of compressed bloomBits vectors belonging to the given bit index and section indexes
func GetBloomBits(ctx context.Context, odr OdrBackend, bitIdx uint, sectionIdxList []uint64) ([][]byte, error) { func GetBloomBits(ctx context.Context, odr OdrBackend, bitIdx uint, sectionIdxList []uint64) ([][]byte, error) {
var ( var (

2
light/txpool_test.go
View File

@ -100,7 +100,7 @@ func TestTxPool(t *testing.T) {
discard: make(chan int, 1), discard: make(chan int, 1),
mined: make(chan int, 1), mined: make(chan int, 1),
} }
lightchain, _ := NewLightChain(odr, params.TestChainConfig, ethash.NewFullFaker()) lightchain, _ := NewLightChain(odr, params.TestChainConfig, ethash.NewFullFaker(), nil)
txPermanent = 50 txPermanent = 50
pool := NewTxPool(params.TestChainConfig, lightchain, relay) pool := NewTxPool(params.TestChainConfig, lightchain, relay)
ctx, cancel := context.WithTimeout(context.Background(), 1*time.Second) ctx, cancel := context.WithTimeout(context.Background(), 1*time.Second)

1
node/node.go
View File

@ -247,7 +247,6 @@ func (n *Node) Start() error {
n.services = services n.services = services
n.server = running n.server = running
n.stop = make(chan struct{}) n.stop = make(chan struct{})
return nil return nil
} }

2
p2p/message.go
View File

@ -169,7 +169,7 @@ type MsgPipeRW struct {
closed *int32 closed *int32
} }
// WriteMsg sends a messsage on the pipe. // WriteMsg sends a message on the pipe.
// It blocks until the receiver has consumed the message payload. // It blocks until the receiver has consumed the message payload.
func (p *MsgPipeRW) WriteMsg(msg Msg) error { func (p *MsgPipeRW) WriteMsg(msg Msg) error {
if atomic.LoadInt32(p.closed) == 0 { if atomic.LoadInt32(p.closed) == 0 {

56
params/config.go
View File

@ -17,10 +17,12 @@
package params package params
import ( import (
"encoding/binary"
"fmt" "fmt"
"math/big" "math/big"
"github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/crypto"
) )
// Genesis hashes to enforce below configs on. // Genesis hashes to enforce below configs on.
@ -40,6 +42,12 @@ var TrustedCheckpoints = map[common.Hash]*TrustedCheckpoint{
GoerliGenesisHash: GoerliTrustedCheckpoint, GoerliGenesisHash: GoerliTrustedCheckpoint,
} }
// CheckpointOracles associates each known checkpoint oracles with the genesis hash of
// the chain it belongs to.
var CheckpointOracles = map[common.Hash]*CheckpointOracleConfig{
RinkebyGenesisHash: RinkebyCheckpointOracle,
}
var ( var (
// MainnetChainConfig is the chain parameters to run a node on the main network. // MainnetChainConfig is the chain parameters to run a node on the main network.
MainnetChainConfig = &ChainConfig{ MainnetChainConfig = &ChainConfig{
@ -59,7 +67,6 @@ var (
// MainnetTrustedCheckpoint contains the light client trusted checkpoint for the main network. // MainnetTrustedCheckpoint contains the light client trusted checkpoint for the main network.
MainnetTrustedCheckpoint = &TrustedCheckpoint{ MainnetTrustedCheckpoint = &TrustedCheckpoint{
Name: "mainnet",
SectionIndex: 227, SectionIndex: 227,
SectionHead: common.HexToHash("0xa2e0b25d72c2fc6e35a7f853cdacb193b4b4f95c606accf7f8fa8415283582c7"), SectionHead: common.HexToHash("0xa2e0b25d72c2fc6e35a7f853cdacb193b4b4f95c606accf7f8fa8415283582c7"),
CHTRoot: common.HexToHash("0xf69bdd4053b95b61a27b106a0e86103d791edd8574950dc96aa351ab9b9f1aa0"), CHTRoot: common.HexToHash("0xf69bdd4053b95b61a27b106a0e86103d791edd8574950dc96aa351ab9b9f1aa0"),
@ -84,7 +91,6 @@ var (
// TestnetTrustedCheckpoint contains the light client trusted checkpoint for the Ropsten test network. // TestnetTrustedCheckpoint contains the light client trusted checkpoint for the Ropsten test network.
TestnetTrustedCheckpoint = &TrustedCheckpoint{ TestnetTrustedCheckpoint = &TrustedCheckpoint{
Name: "testnet",
SectionIndex: 161, SectionIndex: 161,
SectionHead: common.HexToHash("0x5378afa734e1feafb34bcca1534c4d96952b754579b96a4afb23d5301ecececc"), SectionHead: common.HexToHash("0x5378afa734e1feafb34bcca1534c4d96952b754579b96a4afb23d5301ecececc"),
CHTRoot: common.HexToHash("0x1cf2b071e7443a62914362486b613ff30f60cea0d9c268ed8c545f876a3ee60c"), CHTRoot: common.HexToHash("0x1cf2b071e7443a62914362486b613ff30f60cea0d9c268ed8c545f876a3ee60c"),
@ -112,13 +118,24 @@ var (
// RinkebyTrustedCheckpoint contains the light client trusted checkpoint for the Rinkeby test network. // RinkebyTrustedCheckpoint contains the light client trusted checkpoint for the Rinkeby test network.
RinkebyTrustedCheckpoint = &TrustedCheckpoint{ RinkebyTrustedCheckpoint = &TrustedCheckpoint{
Name: "rinkeby",
SectionIndex: 125, SectionIndex: 125,
SectionHead: common.HexToHash("0x8a738386f6bb34add15846f8f49c4c519a2f32519096e792b9f43bcb407c831c"), SectionHead: common.HexToHash("0x8a738386f6bb34add15846f8f49c4c519a2f32519096e792b9f43bcb407c831c"),
CHTRoot: common.HexToHash("0xa1e5720a9bad4dce794f129e4ac6744398197b652868011486a6f89c8ec84a75"), CHTRoot: common.HexToHash("0xa1e5720a9bad4dce794f129e4ac6744398197b652868011486a6f89c8ec84a75"),
BloomRoot: common.HexToHash("0xa3048fe8b7e30f77f11bc755a88478363d7d3e71c2bdfe4e8ab9e269cd804ba2"), BloomRoot: common.HexToHash("0xa3048fe8b7e30f77f11bc755a88478363d7d3e71c2bdfe4e8ab9e269cd804ba2"),
} }
// RinkebyCheckpointOracle contains a set of configs for the Rinkeby test network oracle.
RinkebyCheckpointOracle = &CheckpointOracleConfig{
Address: common.HexToAddress("0xebe8eFA441B9302A0d7eaECc277c09d20D684540"),
Signers: []common.Address{
common.HexToAddress("0xd9c9cd5f6779558b6e0ed4e6acf6b1947e7fa1f3"), // Peter
common.HexToAddress("0x78d1ad571a1a09d60d9bbf25894b44e4c8859595"), // Martin
common.HexToAddress("0x286834935f4A8Cfb4FF4C77D5770C2775aE2b0E7"), // Zsolt
common.HexToAddress("0xb86e2B0Ab5A4B1373e40c51A7C712c70Ba2f9f8E"), // Gary
},
Threshold: 2,
}
// GoerliChainConfig contains the chain parameters to run a node on the Görli test network. // GoerliChainConfig contains the chain parameters to run a node on the Görli test network.
GoerliChainConfig = &ChainConfig{ GoerliChainConfig = &ChainConfig{
ChainID: big.NewInt(5), ChainID: big.NewInt(5),
@ -139,7 +156,6 @@ var (
// GoerliTrustedCheckpoint contains the light client trusted checkpoint for the Görli test network. // GoerliTrustedCheckpoint contains the light client trusted checkpoint for the Görli test network.
GoerliTrustedCheckpoint = &TrustedCheckpoint{ GoerliTrustedCheckpoint = &TrustedCheckpoint{
Name: "goerli",
SectionIndex: 9, SectionIndex: 9,
SectionHead: common.HexToHash("0x8e223d827391eee53b07cb8ee057dbfa11c93e0b45352188c783affd7840a921"), SectionHead: common.HexToHash("0x8e223d827391eee53b07cb8ee057dbfa11c93e0b45352188c783affd7840a921"),
CHTRoot: common.HexToHash("0xe0a817ac69b36c1e437c5b0cff9e764853f5115702b5f66d451b665d6afb7e78"), CHTRoot: common.HexToHash("0xe0a817ac69b36c1e437c5b0cff9e764853f5115702b5f66d451b665d6afb7e78"),
@ -169,13 +185,43 @@ var (
// used to start light syncing from this checkpoint and avoid downloading the // used to start light syncing from this checkpoint and avoid downloading the
// entire header chain while still being able to securely access old headers/logs. // entire header chain while still being able to securely access old headers/logs.
type TrustedCheckpoint struct { type TrustedCheckpoint struct {
Name string `json:"-"`
SectionIndex uint64 `json:"sectionIndex"` SectionIndex uint64 `json:"sectionIndex"`
SectionHead common.Hash `json:"sectionHead"` SectionHead common.Hash `json:"sectionHead"`
CHTRoot common.Hash `json:"chtRoot"` CHTRoot common.Hash `json:"chtRoot"`
BloomRoot common.Hash `json:"bloomRoot"` BloomRoot common.Hash `json:"bloomRoot"`
} }
// HashEqual returns an indicator comparing the itself hash with given one.
func (c *TrustedCheckpoint) HashEqual(hash common.Hash) bool {
if c.Empty() {
return hash == common.Hash{}
}
return c.Hash() == hash
}
// Hash returns the hash of checkpoint's four key fields(index, sectionHead, chtRoot and bloomTrieRoot).
func (c *TrustedCheckpoint) Hash() common.Hash {
buf := make([]byte, 8+3*common.HashLength)
binary.BigEndian.PutUint64(buf, c.SectionIndex)
copy(buf[8:], c.SectionHead.Bytes())
copy(buf[8+common.HashLength:], c.CHTRoot.Bytes())
copy(buf[8+2*common.HashLength:], c.BloomRoot.Bytes())
return crypto.Keccak256Hash(buf)
}
// Empty returns an indicator whether the checkpoint is regarded as empty.
func (c *TrustedCheckpoint) Empty() bool {
return c.SectionHead == (common.Hash{}) || c.CHTRoot == (common.Hash{}) || c.BloomRoot == (common.Hash{})
}
// CheckpointOracleConfig represents a set of checkpoint contract(which acts as an oracle)
// config which used for light client checkpoint syncing.
type CheckpointOracleConfig struct {
Address common.Address `json:"address"`
Signers []common.Address `json:"signers"`
Threshold uint64 `json:"threshold"`
}
// ChainConfig is the core config which determines the blockchain settings. // ChainConfig is the core config which determines the blockchain settings.
// //
// ChainConfig is stored in the database on a per block basis. This means // ChainConfig is stored in the database on a per block basis. This means

6
params/network_params.go
View File

@ -47,6 +47,12 @@ const (
// is generated // is generated
HelperTrieProcessConfirmations = 256 HelperTrieProcessConfirmations = 256
// CheckpointFrequency is the block frequency for creating checkpoint
CheckpointFrequency = 32768
// CheckpointProcessConfirmations is the number before a checkpoint is generated
CheckpointProcessConfirmations = 256
// ImmutabilityThreshold is the number of blocks after which a chain segment is // ImmutabilityThreshold is the number of blocks after which a chain segment is
// considered immutable (i.e. soft finality). It is used by the downloader as a // considered immutable (i.e. soft finality). It is used by the downloader as a
// hard limit against deep ancestors, by the blockchain against deep reorgs, by // hard limit against deep ancestors, by the blockchain against deep reorgs, by