status-go/node/node.go

389 lines
12 KiB
Go

package node
import (
"encoding/json"
"errors"
"fmt"
"os"
"path/filepath"
"time"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/eth"
"github.com/ethereum/go-ethereum/eth/downloader"
"github.com/ethereum/go-ethereum/les"
"github.com/ethereum/go-ethereum/log"
"github.com/ethereum/go-ethereum/node"
"github.com/ethereum/go-ethereum/p2p"
"github.com/ethereum/go-ethereum/p2p/discover"
"github.com/ethereum/go-ethereum/p2p/discv5"
"github.com/ethereum/go-ethereum/p2p/nat"
"github.com/status-im/status-go/mailserver"
"github.com/status-im/status-go/params"
"github.com/status-im/status-go/services/peer"
"github.com/status-im/status-go/services/personal"
"github.com/status-im/status-go/services/shhext"
"github.com/status-im/status-go/services/status"
"github.com/status-im/status-go/static"
"github.com/status-im/status-go/timesource"
whisper "github.com/status-im/whisper/whisperv6"
"github.com/syndtr/goleveldb/leveldb"
)
// Errors related to node and services creation.
var (
ErrNodeMakeFailureFormat = "error creating p2p node: %s"
ErrWhisperServiceRegistrationFailure = errors.New("failed to register the Whisper service")
ErrLightEthRegistrationFailure = errors.New("failed to register the LES service")
ErrLightEthRegistrationFailureUpstreamEnabled = errors.New("failed to register the LES service, upstream is also configured")
ErrPersonalServiceRegistrationFailure = errors.New("failed to register the personal api service")
ErrStatusServiceRegistrationFailure = errors.New("failed to register the Status service")
ErrPeerServiceRegistrationFailure = errors.New("failed to register the Peer service")
)
// All general log messages in this package should be routed through this logger.
var logger = log.New("package", "status-go/node")
// MakeNode creates a geth node entity
func MakeNode(config *params.NodeConfig, db *leveldb.DB) (*node.Node, error) {
// If DataDir is empty, it means we want to create an ephemeral node
// keeping data only in memory.
if config.DataDir != "" {
// make sure data directory exists
if err := os.MkdirAll(filepath.Clean(config.DataDir), os.ModePerm); err != nil {
return nil, fmt.Errorf("make node: make data directory: %v", err)
}
// make sure keys directory exists
if err := os.MkdirAll(filepath.Clean(config.KeyStoreDir), os.ModePerm); err != nil {
return nil, fmt.Errorf("make node: make keys directory: %v", err)
}
}
stackConfig, err := newGethNodeConfig(config)
if err != nil {
return nil, err
}
stack, err := node.New(stackConfig)
if err != nil {
return nil, fmt.Errorf(ErrNodeMakeFailureFormat, err.Error())
}
// start Ethereum service if we are not expected to use an upstream server
if !config.UpstreamConfig.Enabled {
if err := activateLightEthService(stack, config); err != nil {
return nil, fmt.Errorf("%v: %v", ErrLightEthRegistrationFailure, err)
}
} else {
if config.LightEthConfig.Enabled {
return nil, fmt.Errorf("%v: %v", ErrLightEthRegistrationFailureUpstreamEnabled, err)
}
logger.Info("LES protocol is disabled")
// `personal_sign` and `personal_ecRecover` methods are important to
// keep DApps working.
// Usually, they are provided by an ETH or a LES service, but when using
// upstream, we don't start any of these, so we need to start our own
// implementation.
if err := activatePersonalService(stack, config); err != nil {
return nil, fmt.Errorf("%v: %v", ErrPersonalServiceRegistrationFailure, err)
}
}
// start Whisper service.
if err := activateShhService(stack, config, db); err != nil {
return nil, fmt.Errorf("%v: %v", ErrWhisperServiceRegistrationFailure, err)
}
// start status service.
if err := activateStatusService(stack, config); err != nil {
return nil, fmt.Errorf("%v: %v", ErrStatusServiceRegistrationFailure, err)
}
// start peer service
if err := activatePeerService(stack); err != nil {
return nil, fmt.Errorf("%v: %v", ErrPeerServiceRegistrationFailure, err)
}
return stack, nil
}
// newGethNodeConfig returns default stack configuration for mobile client node
func newGethNodeConfig(config *params.NodeConfig) (*node.Config, error) {
nc := &node.Config{
DataDir: config.DataDir,
KeyStoreDir: config.KeyStoreDir,
UseLightweightKDF: true,
NoUSB: true,
Name: config.Name,
Version: config.Version,
P2P: p2p.Config{
NoDiscovery: true, // we always use only v5 server
ListenAddr: config.ListenAddr,
NAT: nat.Any(),
MaxPeers: config.MaxPeers,
MaxPendingPeers: config.MaxPendingPeers,
},
HTTPModules: config.FormatAPIModules(),
}
if config.IPCEnabled {
// use well-known defaults
if config.IPCFile == "" {
config.IPCFile = "geth.ipc"
}
nc.IPCPath = config.IPCFile
}
if config.HTTPEnabled {
nc.HTTPHost = config.HTTPHost
nc.HTTPPort = config.HTTPPort
nc.HTTPVirtualHosts = config.HTTPVirtualHosts
nc.HTTPCors = config.HTTPCors
}
if config.ClusterConfig.Enabled {
nc.P2P.BootstrapNodesV5 = parseNodesV5(config.ClusterConfig.BootNodes)
nc.P2P.StaticNodes = parseNodes(config.ClusterConfig.StaticNodes)
}
if config.NodeKey != "" {
sk, err := crypto.HexToECDSA(config.NodeKey)
if err != nil {
return nil, err
}
// override node's private key
nc.P2P.PrivateKey = sk
}
return nc, nil
}
// calculateGenesis retrieves genesis value for given network
func calculateGenesis(networkID uint64) (*core.Genesis, error) {
var genesis *core.Genesis
switch networkID {
case params.MainNetworkID:
genesis = core.DefaultGenesisBlock()
case params.RopstenNetworkID:
genesis = core.DefaultTestnetGenesisBlock()
case params.RinkebyNetworkID:
genesis = core.DefaultRinkebyGenesisBlock()
case params.StatusChainNetworkID:
var err error
if genesis, err = defaultStatusChainGenesisBlock(); err != nil {
return nil, err
}
default:
return nil, nil
}
return genesis, nil
}
// defaultStatusChainGenesisBlock returns the StatusChain network genesis block.
func defaultStatusChainGenesisBlock() (*core.Genesis, error) {
genesisJSON, err := static.ConfigStatusChainGenesisJsonBytes()
if err != nil {
return nil, fmt.Errorf("status-chain-genesis.json could not be loaded: %s", err)
}
var genesis *core.Genesis
err = json.Unmarshal(genesisJSON, &genesis)
if err != nil {
return nil, fmt.Errorf("cannot unmarshal status-chain-genesis.json: %s", err)
}
return genesis, nil
}
// activateLightEthService configures and registers the eth.Ethereum service with a given node.
func activateLightEthService(stack *node.Node, config *params.NodeConfig) error {
if !config.LightEthConfig.Enabled {
logger.Info("LES protocol is disabled")
return nil
}
genesis, err := calculateGenesis(config.NetworkID)
if err != nil {
return err
}
ethConf := eth.DefaultConfig
ethConf.Genesis = genesis
ethConf.SyncMode = downloader.LightSync
ethConf.NetworkId = config.NetworkID
ethConf.DatabaseCache = config.LightEthConfig.DatabaseCache
ethConf.ULC = &eth.ULCConfig{
TrustedServers: config.LightEthConfig.TrustedNodes,
MinTrustedFraction: config.LightEthConfig.MinTrustedFraction,
}
return stack.Register(func(ctx *node.ServiceContext) (node.Service, error) {
return les.New(ctx, &ethConf)
})
}
func activatePersonalService(stack *node.Node, config *params.NodeConfig) error {
return stack.Register(func(*node.ServiceContext) (node.Service, error) {
svc := personal.New(stack.AccountManager())
return svc, nil
})
}
func activateStatusService(stack *node.Node, config *params.NodeConfig) error {
if !config.StatusServiceEnabled {
logger.Info("Status service api is disabled")
return nil
}
return stack.Register(func(ctx *node.ServiceContext) (node.Service, error) {
var whisper *whisper.Whisper
if err := ctx.Service(&whisper); err != nil {
return nil, err
}
svc := status.New(whisper)
return svc, nil
})
}
func activatePeerService(stack *node.Node) error {
return stack.Register(func(ctx *node.ServiceContext) (node.Service, error) {
svc := peer.New()
return svc, nil
})
}
func registerMailServer(whisperService *whisper.Whisper, config *params.WhisperConfig) (err error) {
var mailServer mailserver.WMailServer
whisperService.RegisterServer(&mailServer)
return mailServer.Init(whisperService, config)
}
// activateShhService configures Whisper and adds it to the given node.
func activateShhService(stack *node.Node, config *params.NodeConfig, db *leveldb.DB) (err error) {
if !config.WhisperConfig.Enabled {
logger.Info("SHH protocol is disabled")
return nil
}
if config.WhisperConfig.EnableNTPSync {
if err = stack.Register(func(*node.ServiceContext) (node.Service, error) {
return timesource.Default(), nil
}); err != nil {
return
}
}
err = stack.Register(func(ctx *node.ServiceContext) (node.Service, error) {
whisperServiceConfig := &whisper.Config{
MaxMessageSize: whisper.DefaultMaxMessageSize,
MinimumAcceptedPOW: params.WhisperMinimumPoW,
}
if config.WhisperConfig.MaxMessageSize > 0 {
whisperServiceConfig.MaxMessageSize = config.WhisperConfig.MaxMessageSize
}
if config.WhisperConfig.MinimumPoW > 0 {
whisperServiceConfig.MinimumAcceptedPOW = config.WhisperConfig.MinimumPoW
}
whisperService := whisper.New(whisperServiceConfig)
if config.WhisperConfig.EnableNTPSync {
timesource, err := whisperTimeSource(ctx)
if err != nil {
return nil, err
}
whisperService.SetTimeSource(timesource)
}
// enable mail service
if config.WhisperConfig.EnableMailServer {
if err := registerMailServer(whisperService, &config.WhisperConfig); err != nil {
return nil, fmt.Errorf("failed to register MailServer: %v", err)
}
}
if config.WhisperConfig.LightClient {
emptyBloomFilter := make([]byte, 64)
if err := whisperService.SetBloomFilter(emptyBloomFilter); err != nil {
return nil, err
}
}
return whisperService, nil
})
if err != nil {
return
}
// TODO(dshulyak) add a config option to enable it by default, but disable if app is started from statusd
return stack.Register(func(ctx *node.ServiceContext) (node.Service, error) {
var whisper *whisper.Whisper
if err := ctx.Service(&whisper); err != nil {
return nil, err
}
config := &shhext.ServiceConfig{
DataDir: config.BackupDisabledDataDir,
InstallationID: config.InstallationID,
Debug: config.DebugAPIEnabled,
PFSEnabled: config.PFSEnabled,
}
svc := shhext.New(whisper, shhext.EnvelopeSignalHandler{}, db, config)
return svc, nil
})
}
// parseNodes creates list of discover.Node out of enode strings.
func parseNodes(enodes []string) []*discover.Node {
var nodes []*discover.Node
for _, enode := range enodes {
parsedPeer, err := discover.ParseNode(enode)
if err == nil {
nodes = append(nodes, parsedPeer)
} else {
logger.Error("Failed to parse enode", "enode", enode, "err", err)
}
}
return nodes
}
// parseNodesV5 creates list of discv5.Node out of enode strings.
func parseNodesV5(enodes []string) []*discv5.Node {
var nodes []*discv5.Node
for _, enode := range enodes {
parsedPeer, err := discv5.ParseNode(enode)
if err == nil {
nodes = append(nodes, parsedPeer)
} else {
logger.Error("Failed to parse enode", "enode", enode, "err", err)
}
}
return nodes
}
func parseNodesToNodeID(enodes []string) []discover.NodeID {
nodeIDs := make([]discover.NodeID, 0, len(enodes))
for _, node := range parseNodes(enodes) {
nodeIDs = append(nodeIDs, node.ID)
}
return nodeIDs
}
// whisperTimeSource get timeSource to be used by whisper
func whisperTimeSource(ctx *node.ServiceContext) (func() time.Time, error) {
var timeSource *timesource.NTPTimeSource
if err := ctx.Service(&timeSource); err != nil {
return nil, err
}
return timeSource.Now, nil
}