346 lines
11 KiB
Go
346 lines
11 KiB
Go
package node
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import (
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"encoding/json"
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"errors"
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"fmt"
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"os"
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"path"
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"path/filepath"
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"time"
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"github.com/ethereum/go-ethereum/core"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/eth"
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"github.com/ethereum/go-ethereum/eth/downloader"
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"github.com/ethereum/go-ethereum/les"
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"github.com/ethereum/go-ethereum/log"
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"github.com/ethereum/go-ethereum/node"
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"github.com/ethereum/go-ethereum/p2p"
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"github.com/ethereum/go-ethereum/p2p/discover"
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"github.com/ethereum/go-ethereum/p2p/discv5"
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"github.com/ethereum/go-ethereum/p2p/nat"
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whisper "github.com/ethereum/go-ethereum/whisper/whisperv6"
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"github.com/status-im/status-go/mailserver"
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shhmetrics "github.com/status-im/status-go/metrics/whisper"
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"github.com/status-im/status-go/params"
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"github.com/status-im/status-go/services/peer"
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"github.com/status-im/status-go/services/personal"
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"github.com/status-im/status-go/services/shhext"
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"github.com/status-im/status-go/services/status"
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"github.com/status-im/status-go/timesource"
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"github.com/syndtr/goleveldb/leveldb"
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)
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// Errors related to node and services creation.
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var (
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ErrNodeMakeFailureFormat = "error creating p2p node: %s"
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ErrWhisperServiceRegistrationFailure = errors.New("failed to register the Whisper service")
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ErrLightEthRegistrationFailure = errors.New("failed to register the LES service")
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ErrPersonalServiceRegistrationFailure = errors.New("failed to register the personal api service")
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ErrStatusServiceRegistrationFailure = errors.New("failed to register the Status service")
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ErrPeerServiceRegistrationFailure = errors.New("failed to register the Peer service")
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)
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// All general log messages in this package should be routed through this logger.
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var logger = log.New("package", "status-go/node")
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// MakeNode create a geth node entity
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func MakeNode(config *params.NodeConfig, db *leveldb.DB) (*node.Node, error) {
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// If DataDir is empty, it means we want to create an ephemeral node
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// keeping data only in memory.
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if config.DataDir != "" {
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// make sure data directory exists
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if err := os.MkdirAll(filepath.Clean(config.DataDir), os.ModePerm); err != nil {
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return nil, fmt.Errorf("make node: make data directory: %v", err)
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}
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// make sure keys directory exists
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if err := os.MkdirAll(filepath.Clean(config.KeyStoreDir), os.ModePerm); err != nil {
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return nil, fmt.Errorf("make node: make keys directory: %v", err)
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}
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}
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stackConfig := defaultEmbeddedNodeConfig(config)
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if len(config.NodeKeyFile) > 0 {
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logger.Info("Loading private key file", "file", config.NodeKeyFile)
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pk, err := crypto.LoadECDSA(config.NodeKeyFile)
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if err != nil {
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logger.Error("Failed loading private key file", "file", config.NodeKeyFile, "error", err)
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}
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// override node's private key
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stackConfig.P2P.PrivateKey = pk
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}
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stack, err := node.New(stackConfig)
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if err != nil {
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return nil, fmt.Errorf(ErrNodeMakeFailureFormat, err.Error())
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}
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// start Ethereum service if we are not expected to use an upstream server
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if !config.UpstreamConfig.Enabled {
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if err := activateLightEthService(stack, config); err != nil {
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return nil, fmt.Errorf("%v: %v", ErrLightEthRegistrationFailure, err)
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}
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} else {
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// `personal_sign` and `personal_ecRecover` methods are important to
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// keep DApps working.
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// Usually, they are provided by an ETH or a LES service, but when using
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// upstream, we don't start any of these, so we need to start our own
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// implementation.
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if err := activatePersonalService(stack, config); err != nil {
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return nil, fmt.Errorf("%v: %v", ErrPersonalServiceRegistrationFailure, err)
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}
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}
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// start Whisper service.
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if err := activateShhService(stack, config, db); err != nil {
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return nil, fmt.Errorf("%v: %v", ErrWhisperServiceRegistrationFailure, err)
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}
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// start status service.
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if err := activateStatusService(stack, config); err != nil {
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return nil, fmt.Errorf("%v: %v", ErrStatusServiceRegistrationFailure, err)
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}
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// start peer service
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if err := activatePeerService(stack); err != nil {
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return nil, fmt.Errorf("%v: %v", ErrPeerServiceRegistrationFailure, err)
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}
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return stack, nil
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}
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// defaultEmbeddedNodeConfig returns default stack configuration for mobile client node
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func defaultEmbeddedNodeConfig(config *params.NodeConfig) *node.Config {
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nc := &node.Config{
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DataDir: config.DataDir,
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KeyStoreDir: config.KeyStoreDir,
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UseLightweightKDF: true,
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NoUSB: true,
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Name: config.Name,
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Version: config.Version,
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P2P: p2p.Config{
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NoDiscovery: true, // we always use only v5 server
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ListenAddr: config.ListenAddr,
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NAT: nat.Any(),
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MaxPeers: config.MaxPeers,
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MaxPendingPeers: config.MaxPendingPeers,
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},
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IPCPath: makeIPCPath(config),
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HTTPCors: nil,
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HTTPModules: config.FormatAPIModules(),
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HTTPVirtualHosts: []string{"localhost"},
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}
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if config.RPCEnabled {
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nc.HTTPHost = config.HTTPHost
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nc.HTTPPort = config.HTTPPort
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}
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if config.ClusterConfig != nil && config.ClusterConfig.Enabled {
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nc.P2P.BootstrapNodesV5 = parseNodesV5(config.ClusterConfig.BootNodes)
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nc.P2P.StaticNodes = parseNodes(config.ClusterConfig.StaticNodes)
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}
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return nc
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}
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// activateLightEthService configures and registers the eth.Ethereum service with a given node.
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func activateLightEthService(stack *node.Node, config *params.NodeConfig) error {
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if config.LightEthConfig == nil || !config.LightEthConfig.Enabled {
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logger.Info("LES protocol is disabled")
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return nil
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}
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var genesis *core.Genesis
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if config.LightEthConfig.Genesis != "" {
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genesis = new(core.Genesis)
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if err := json.Unmarshal([]byte(config.LightEthConfig.Genesis), genesis); err != nil {
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return fmt.Errorf("invalid genesis spec: %v", err)
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}
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}
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ethConf := eth.DefaultConfig
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ethConf.Genesis = genesis
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ethConf.SyncMode = downloader.LightSync
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ethConf.NetworkId = config.NetworkID
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ethConf.DatabaseCache = config.LightEthConfig.DatabaseCache
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return stack.Register(func(ctx *node.ServiceContext) (node.Service, error) {
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return les.New(ctx, ðConf)
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})
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}
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func activatePersonalService(stack *node.Node, config *params.NodeConfig) error {
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return stack.Register(func(*node.ServiceContext) (node.Service, error) {
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svc := personal.New(stack.AccountManager())
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return svc, nil
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})
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}
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func activateStatusService(stack *node.Node, config *params.NodeConfig) error {
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if !config.StatusServiceEnabled {
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logger.Info("Status service api is disabled")
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return nil
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}
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return stack.Register(func(ctx *node.ServiceContext) (node.Service, error) {
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var whisper *whisper.Whisper
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if err := ctx.Service(&whisper); err != nil {
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return nil, err
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}
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svc := status.New(whisper)
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return svc, nil
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})
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}
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func activatePeerService(stack *node.Node) error {
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return stack.Register(func(ctx *node.ServiceContext) (node.Service, error) {
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svc := peer.New()
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return svc, nil
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})
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}
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func registerMailServer(whisperService *whisper.Whisper, config *params.WhisperConfig) (err error) {
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// if the Password is already set, do not override it
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if config.MailServerPassword == "" && config.MailServerPasswordFile != "" {
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err = config.ReadMailServerPasswordFile()
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if err != nil {
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return
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}
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}
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// similarly, do not override already configured AsymKey
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if config.MailServerAsymKey == nil && config.MailServerAsymKeyFile != "" {
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err = config.ReadMailServerAsymKeyFile()
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if err != nil {
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return
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}
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}
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var mailServer mailserver.WMailServer
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whisperService.RegisterServer(&mailServer)
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return mailServer.Init(whisperService, config)
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}
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// activateShhService configures Whisper and adds it to the given node.
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func activateShhService(stack *node.Node, config *params.NodeConfig, db *leveldb.DB) (err error) {
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if config.WhisperConfig == nil || !config.WhisperConfig.Enabled {
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logger.Info("SHH protocol is disabled")
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return nil
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}
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if config.WhisperConfig.EnableNTPSync {
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if err = stack.Register(func(*node.ServiceContext) (node.Service, error) {
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return timesource.Default(), nil
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}); err != nil {
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return
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}
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}
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err = stack.Register(func(ctx *node.ServiceContext) (node.Service, error) {
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whisperServiceConfig := &whisper.Config{
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MaxMessageSize: whisper.DefaultMaxMessageSize,
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MinimumAcceptedPOW: 0.001,
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TimeSource: time.Now,
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}
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if config.WhisperConfig.EnableNTPSync {
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if whisperServiceConfig.TimeSource, err = whisperTimeSource(ctx); err != nil {
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return nil, err
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}
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}
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whisperService := whisper.New(whisperServiceConfig)
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// enable metrics
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whisperService.RegisterEnvelopeTracer(&shhmetrics.EnvelopeTracer{})
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// enable mail service
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if config.WhisperConfig.EnableMailServer {
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if err := registerMailServer(whisperService, config.WhisperConfig); err != nil {
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return nil, fmt.Errorf("failed to register MailServer: %v", err)
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}
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}
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if config.WhisperConfig.LightClient {
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emptyBloomFilter := make([]byte, 64)
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if err := whisperService.SetBloomFilter(emptyBloomFilter); err != nil {
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return nil, err
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}
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}
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return whisperService, nil
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})
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if err != nil {
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return
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}
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// TODO(dshulyak) add a config option to enable it by default, but disable if app is started from statusd
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return stack.Register(func(ctx *node.ServiceContext) (node.Service, error) {
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var whisper *whisper.Whisper
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if err := ctx.Service(&whisper); err != nil {
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return nil, err
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}
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svc := shhext.New(whisper, shhext.EnvelopeSignalHandler{}, db, config.DebugAPIEnabled)
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return svc, nil
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})
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}
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// makeIPCPath returns IPC-RPC filename
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func makeIPCPath(config *params.NodeConfig) string {
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if !config.IPCEnabled {
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return ""
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}
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return path.Join(config.DataDir, config.IPCFile)
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}
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// parseNodes creates list of discover.Node out of enode strings.
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func parseNodes(enodes []string) []*discover.Node {
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var nodes []*discover.Node
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for _, enode := range enodes {
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parsedPeer, err := discover.ParseNode(enode)
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if err == nil {
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nodes = append(nodes, parsedPeer)
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} else {
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logger.Error("Failed to parse enode", "enode", enode, "err", err)
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}
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}
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return nodes
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}
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// parseNodesV5 creates list of discv5.Node out of enode strings.
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func parseNodesV5(enodes []string) []*discv5.Node {
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var nodes []*discv5.Node
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for _, enode := range enodes {
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parsedPeer, err := discv5.ParseNode(enode)
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if err == nil {
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nodes = append(nodes, parsedPeer)
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} else {
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logger.Error("Failed to parse enode", "enode", enode, "err", err)
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}
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}
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return nodes
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}
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func parseNodesToNodeID(enodes []string) []discover.NodeID {
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nodeIDs := make([]discover.NodeID, 0, len(enodes))
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for _, node := range parseNodes(enodes) {
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nodeIDs = append(nodeIDs, node.ID)
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}
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return nodeIDs
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}
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// whisperTimeSource get timeSource to be used by whisper
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func whisperTimeSource(ctx *node.ServiceContext) (func() time.Time, error) {
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var timeSource *timesource.NTPTimeSource
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if err := ctx.Service(&timeSource); err != nil {
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return nil, err
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}
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return timeSource.Now, nil
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}
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