status-go/geth/params/config.go

632 lines
18 KiB
Go

package params
import (
"bytes"
"crypto/ecdsa"
"encoding/json"
"errors"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"strings"
"github.com/ethereum/go-ethereum/core"
"github.com/ethereum/go-ethereum/crypto"
"github.com/status-im/status-go/geth/log"
"github.com/status-im/status-go/static"
)
// default node configuration options
var (
UseMainnetFlag = "false" // to be overridden via -ldflags '-X geth/params.UseMainnetFlag'
UseMainnet = false
)
func init() {
if UseMainnetFlag == "true" { // set at compile time, here we make sure to set corresponding boolean flag
UseMainnet = true
}
}
// errors
var (
ErrMissingDataDir = errors.New("missing required 'DataDir' parameter")
ErrMissingNetworkID = errors.New("missing required 'NetworkID' parameter")
ErrEmptyPasswordFile = errors.New("password file cannot be empty")
ErrNoPasswordFileValueSet = errors.New("password file path not set")
ErrNoIdentityFileValueSet = errors.New("identity file path not set")
ErrEmptyIdentityFile = errors.New("identity file cannot be empty")
ErrEmptyAuthorizationKeyFile = errors.New("authorization key file cannot be empty")
ErrAuthorizationKeyFileNotSet = errors.New("authorization key file is not set")
)
// LightEthConfig holds LES-related configuration
// Status nodes are always lightweight clients (due to mobile platform constraints)
type LightEthConfig struct {
// Enabled flag specifies whether protocol is enabled
Enabled bool
// Genesis is JSON to seed the chain database with
Genesis string
// DatabaseCache is memory (in MBs) allocated to internal caching (min 16MB / database forced)
DatabaseCache int
}
// FirebaseConfig holds FCM-related configuration
type FirebaseConfig struct {
// AuthorizationKeyFile file path that contains FCM authorization key
AuthorizationKeyFile string
// NotificationTriggerURL URL used to send push notification requests to
NotificationTriggerURL string
}
// ReadAuthorizationKeyFile reads and loads FCM authorization key
func (c *FirebaseConfig) ReadAuthorizationKeyFile() ([]byte, error) {
if len(c.AuthorizationKeyFile) == 0 {
return nil, ErrAuthorizationKeyFileNotSet
}
key, err := ioutil.ReadFile(c.AuthorizationKeyFile)
if err != nil {
return nil, err
}
key = bytes.TrimRight(key, "\n")
if len(key) == 0 {
return nil, ErrEmptyAuthorizationKeyFile
}
return key, nil
}
// WhisperConfig holds SHH-related configuration
type WhisperConfig struct {
// Enabled flag specifies whether protocol is enabled
Enabled bool
// IdentityFile path to private key, that will be loaded as identity into Whisper
IdentityFile string
// PasswordFile path to password file, for non-interactive password entry
// (if no account file selected, then this password is used for symmetric encryption)
PasswordFile string
// EchoMode if mode is on, prints some arguments for diagnostics
EchoMode bool
// BootstrapNode whether node doesn't actively connect to peers, and waits for incoming connections
BootstrapNode bool
// ForwarderNode is mode when node only forwards messages, neither sends nor decrypts messages
ForwarderNode bool
// MailServerNode is mode when node is capable of delivering expired messages on demand
MailServerNode bool
// NotificationServerNode is mode when node is capable of sending Push (and probably other kinds) Notifications
NotificationServerNode bool
// DataDir is the file system folder Whisper should use for any data storage needs.
DataDir string
// Port Whisper node's listening port
Port int
// MinimumPoW minimum PoW for Whisper messages
MinimumPoW float64
// TTL time to live for messages, in seconds
TTL int
// FirebaseConfig extra configuration for Firebase Cloud Messaging
FirebaseConfig *FirebaseConfig `json:"FirebaseConfig,"`
}
// ReadPasswordFile reads and returns content of the password file
func (c *WhisperConfig) ReadPasswordFile() ([]byte, error) {
if len(c.PasswordFile) == 0 {
return nil, ErrNoPasswordFileValueSet
}
password, err := ioutil.ReadFile(c.PasswordFile)
if err != nil {
return nil, err
}
password = bytes.TrimRight(password, "\n")
if len(password) == 0 {
return nil, ErrEmptyPasswordFile
}
return password, nil
}
// ReadIdentityFile reads and loads identity private key
func (c *WhisperConfig) ReadIdentityFile() (*ecdsa.PrivateKey, error) {
if len(c.IdentityFile) == 0 {
return nil, ErrNoIdentityFileValueSet
}
identity, err := crypto.LoadECDSA(c.IdentityFile)
if err != nil {
return nil, err
}
if identity == nil {
return nil, ErrEmptyIdentityFile
}
return identity, nil
}
// String dumps config object as nicely indented JSON
func (c *WhisperConfig) String() string {
data, _ := json.MarshalIndent(c, "", " ")
return string(data)
}
// SwarmConfig holds Swarm-related configuration
type SwarmConfig struct {
// Enabled flag specifies whether protocol is enabled
Enabled bool
}
// String dumps config object as nicely indented JSON
func (c *SwarmConfig) String() string {
data, _ := json.MarshalIndent(c, "", " ")
return string(data)
}
// BootClusterConfig holds configuration for supporting boot cluster, which is a temporary
// means for mobile devices to get connected to Ethereum network (UDP-based discovery
// may not be available, so we need means to discover the network manually).
type BootClusterConfig struct {
// Enabled flag specifies whether feature is enabled
Enabled bool
// RootNumber CHT root number
RootNumber int
// RootHash is hash of CHT root for a given root number
RootHash string
// BootNodes list of bootstrap nodes for a given network (Ropsten, Rinkeby, Homestead),
// for a given mode (production vs development)
BootNodes []string
}
// String dumps config object as nicely indented JSON
func (c *BootClusterConfig) String() string {
data, _ := json.MarshalIndent(c, "", " ")
return string(data)
}
//=====================================================================================
// UpstreamRPCConfig stores configuration for upstream rpc connection.
type UpstreamRPCConfig struct {
// Enabled flag specifies whether feature is enabled
Enabled bool
// URL sets the rpc upstream host address for communication with
// a non-local infura endpoint.
URL string
}
//=====================================================================================
// NodeConfig stores configuration options for a node
type NodeConfig struct {
// DevMode is true when given configuration is to be used during development.
// For production, this flag should be turned off, so that more strict requirements
// are applied to node's configuration
DevMode bool
// NetworkID sets network to use for selecting peers to connect to
NetworkID uint64 `json:"NetworkId" validate:"required"`
// DataDir is the file system folder the node should use for any data storage needs.
DataDir string `validate:"required"`
// KeyStoreDir is the file system folder that contains private keys.
// If KeyStoreDir is empty, the default location is the "keystore" subdirectory of DataDir.
KeyStoreDir string
// PrivateKeyFile is a filename with node ID (private key)
// This file should contain a valid secp256k1 private key that will be used for both
// remote peer identification as well as network traffic encryption.
NodeKeyFile string
// Name sets the instance name of the node. It must not contain the / character.
Name string `validate:"excludes=/"`
// Version exposes program's version. It is used in the devp2p node identifier.
Version string
// APIModules is a comma-separated list of API modules exposed via *any* (HTTP/WS/IPC) RPC interface.
APIModules string
// HTTPHost is the host interface on which to start the HTTP RPC server.
// Pass empty string if no HTTP RPC interface needs to be started.
HTTPHost string
// RPCEnabled specifies whether the http RPC server is to be enabled by default.
RPCEnabled bool
// HTTPPort is the TCP port number on which to start the Geth's HTTP RPC server.
HTTPPort int
// WSHost is a host interface for the WebSocket RPC server
WSHost string
// WSPort is the TCP port number on which to start the Geth's WebSocket RPC server.
WSPort int
// WSEnabled specifies whether WS-RPC Server is enabled or not
WSEnabled bool
// IPCFile is filename of exposed IPC RPC Server
IPCFile string
// IPCEnabled specifies whether IPC-RPC Server is enabled or not
IPCEnabled bool
// TLSEnabled specifies whether TLS support should be enabled on node or not
// TLS support is only planned in go-ethereum, so we are using our own patch.
TLSEnabled bool
// MaxPeers is the maximum number of (global) peers that can be connected.
// Set to zero, if only static or trusted peers are allowed to connect.
MaxPeers int
// MaxPendingPeers is the maximum number of peers that can be pending in the
// handshake phase, counted separately for inbound and outbound connections.
MaxPendingPeers int
// LogFile is filename where exposed logs get written to
LogFile string
// LogLevel defines minimum log level. Valid names are "ERROR", "WARNING", "INFO", "DEBUG", and "TRACE".
LogLevel string `validate:"eq=ERROR|eq=WARNING|eq=INFO|eq=DEBUG|eq=TRACE"`
// LogToStderr defines whether logged info should also be output to os.Stderr
LogToStderr bool
// UpstreamConfig extra config for providing upstream infura server.
UpstreamConfig UpstreamRPCConfig `json:"UpstreamConfig"`
// BootClusterConfig extra configuration for supporting cluster
BootClusterConfig *BootClusterConfig `json:"BootClusterConfig," validate:"structonly"`
// LightEthConfig extra configuration for LES
LightEthConfig *LightEthConfig `json:"LightEthConfig," validate:"structonly"`
// WhisperConfig extra configuration for SHH
WhisperConfig *WhisperConfig `json:"WhisperConfig," validate:"structonly"`
// SwarmConfig extra configuration for Swarm and ENS
SwarmConfig *SwarmConfig `json:"SwarmConfig," validate:"structonly"`
}
// NewNodeConfig creates new node configuration object
func NewNodeConfig(dataDir string, networkID uint64, devMode bool) (*NodeConfig, error) {
nodeConfig := &NodeConfig{
DevMode: devMode,
NetworkID: networkID,
DataDir: dataDir,
Name: ClientIdentifier,
Version: Version,
RPCEnabled: RPCEnabledDefault,
HTTPHost: HTTPHost,
HTTPPort: HTTPPort,
APIModules: APIModules,
WSHost: WSHost,
WSPort: WSPort,
MaxPeers: MaxPeers,
MaxPendingPeers: MaxPendingPeers,
IPCFile: IPCFile,
LogFile: LogFile,
LogLevel: LogLevel,
LogToStderr: LogToStderr,
BootClusterConfig: &BootClusterConfig{
Enabled: true,
BootNodes: []string{},
},
LightEthConfig: &LightEthConfig{
Enabled: true,
DatabaseCache: DatabaseCache,
},
WhisperConfig: &WhisperConfig{
Enabled: true,
Port: WhisperPort,
MinimumPoW: WhisperMinimumPoW,
TTL: WhisperTTL,
FirebaseConfig: &FirebaseConfig{
NotificationTriggerURL: FirebaseNotificationTriggerURL,
},
},
SwarmConfig: &SwarmConfig{},
}
// adjust dependent values
if err := nodeConfig.updateConfig(); err != nil {
return nil, err
}
return nodeConfig, nil
}
// LoadNodeConfig parses incoming JSON and returned it as Config
func LoadNodeConfig(configJSON string) (*NodeConfig, error) {
nodeConfig, err := loadNodeConfig(configJSON)
if err != nil {
return nil, err
}
if err := nodeConfig.Validate(); err != nil {
return nil, err
}
return nodeConfig, nil
}
func loadNodeConfig(configJSON string) (*NodeConfig, error) {
nodeConfig, err := NewNodeConfig("", 0, true)
if err != nil {
return nil, err
}
decoder := json.NewDecoder(strings.NewReader(configJSON))
// override default configuration with values by JSON input
if err := decoder.Decode(&nodeConfig); err != nil {
return nil, err
}
// repopulate
if err := nodeConfig.updateConfig(); err != nil {
return nil, err
}
return nodeConfig, nil
}
// Validate checks if NodeConfig fields have valid values.
//
// It returns nil if there are no errors, otherwise one or more errors
// can be returned. Multiple errors are joined with a new line.
//
// A single error for a struct:
//
// type TestStruct struct {
// TestField string `validate:"required"`
// }
//
// has the following format:
//
// Key: 'TestStruct.TestField' Error:Field validation for 'TestField' failed on the 'required' tag
//
func (c *NodeConfig) Validate() error {
validate := NewValidator()
if err := validate.Struct(c); err != nil {
return err
}
if c.BootClusterConfig.Enabled {
if err := validate.Struct(c.BootClusterConfig); err != nil {
return err
}
}
if c.LightEthConfig.Enabled {
if err := validate.Struct(c.LightEthConfig); err != nil {
return err
}
}
if c.WhisperConfig.Enabled {
if err := validate.Struct(c.WhisperConfig); err != nil {
return err
}
}
if c.SwarmConfig.Enabled {
if err := validate.Struct(c.SwarmConfig); err != nil {
return err
}
}
return nil
}
// Save dumps configuration to the disk
func (c *NodeConfig) Save() error {
data, err := json.MarshalIndent(c, "", " ")
if err != nil {
return err
}
if err := os.MkdirAll(c.DataDir, os.ModePerm); err != nil {
return err
}
configFilePath := filepath.Join(c.DataDir, "config.json")
if err := ioutil.WriteFile(configFilePath, data, os.ModePerm); err != nil {
return err
}
log.Info(fmt.Sprintf("config file saved: %v", configFilePath))
return nil
}
// updateConfig traverses configuration and adjusts dependent fields
// (we have a development/production and mobile/full node dependent configurations)
func (c *NodeConfig) updateConfig() error {
if err := c.updateGenesisConfig(); err != nil {
return err
}
if err := c.updateUpstreamConfig(); err != nil {
return err
}
if err := c.updateBootClusterConfig(); err != nil {
return err
}
if err := c.updateRelativeDirsConfig(); err != nil {
return err
}
return nil
}
// updateGenesisConfig does necessary adjustments to config object (depending on network node will be running on)
func (c *NodeConfig) updateGenesisConfig() error {
var genesis *core.Genesis
switch c.NetworkID {
case MainNetworkID:
genesis = core.DefaultGenesisBlock()
case RopstenNetworkID:
genesis = core.DefaultTestnetGenesisBlock()
case RinkebyNetworkID:
genesis = core.DefaultRinkebyGenesisBlock()
case StatusChainNetworkID:
var err error
genesis, err = c.DefaultStatusChainGenesisBlock()
if err != nil {
return err
}
default:
return nil
}
// encode the genesis into JSON
enc, err := json.Marshal(genesis)
if err != nil {
return err
}
c.LightEthConfig.Genesis = string(enc)
return nil
}
// DefaultStatusChainGenesisBlock returns the StatusChain network genesis block.
func (c *NodeConfig) DefaultStatusChainGenesisBlock() (*core.Genesis, error) {
genesisJSON, err := static.Asset("config/status-chain-genesis.json")
if err != nil {
return nil, fmt.Errorf("status-chain-genesis.json could not be loaded: %s", err)
}
var genesis *core.Genesis
if err := json.Unmarshal([]byte(genesisJSON), &genesis); err != nil {
return nil, fmt.Errorf("cannot unmarshal status-chain-genesis.json: %s", err)
}
return genesis, nil
}
// updateUpstreamConfig sets the proper UpstreamConfig.URL for the network id being used.
func (c *NodeConfig) updateUpstreamConfig() error {
// If we have a URL already set then keep URL incase
// of custom server.
if c.UpstreamConfig.URL != "" {
return nil
}
switch c.NetworkID {
case MainNetworkID:
c.UpstreamConfig.URL = UpstreamMainNetEthereumNetworkURL
case RopstenNetworkID:
c.UpstreamConfig.URL = UpstreamRopstenEthereumNetworkURL
case RinkebyNetworkID:
c.UpstreamConfig.URL = UpstreamRinkebyEthereumNetworkURL
}
return nil
}
// updateBootClusterConfig loads boot nodes and CHT for a given network and mode.
// This is necessary until we have LES protocol support CHT sync, and better node
// discovery on mobile devices)
func (c *NodeConfig) updateBootClusterConfig() error {
if !c.BootClusterConfig.Enabled {
return nil
}
// TODO: Remove this thing as this is an ugly hack.
// Once CHT sync sub-protocol is working in LES, we will rely on it, as it provides
// decentralized solution. For now, in order to avoid forcing users to long sync times
// we use central static resource
type subClusterConfig struct {
Number int `json:"number"`
Hash string `json:"hash"`
BootNodes []string `json:"bootnodes"`
}
type clusterConfig struct {
NetworkID int `json:"networkID"`
GenesisHash string `json:"genesisHash"`
Prod subClusterConfig `json:"prod"`
Dev subClusterConfig `json:"dev"`
}
chtFile, err := static.Asset("config/cht.json")
if err != nil {
return fmt.Errorf("cht.json could not be loaded: %s", err)
}
var clusters []clusterConfig
err = json.Unmarshal(chtFile, &clusters)
if err != nil {
return fmt.Errorf("failed to unmarshal cht.json: %s", err)
}
for _, cluster := range clusters {
if cluster.NetworkID == int(c.NetworkID) {
c.BootClusterConfig.RootNumber = cluster.Prod.Number
c.BootClusterConfig.RootHash = cluster.Prod.Hash
c.BootClusterConfig.BootNodes = cluster.Prod.BootNodes
if c.DevMode {
c.BootClusterConfig.RootNumber = cluster.Dev.Number
c.BootClusterConfig.RootHash = cluster.Dev.Hash
c.BootClusterConfig.BootNodes = cluster.Dev.BootNodes
}
break
}
}
return nil
}
// updateRelativeDirsConfig updates directories that should be wrt to DataDir
func (c *NodeConfig) updateRelativeDirsConfig() error {
makeSubDirPath := func(baseDir, subDir string) string {
if len(baseDir) == 0 {
return ""
}
return filepath.Join(baseDir, subDir)
}
if len(c.KeyStoreDir) == 0 {
c.KeyStoreDir = makeSubDirPath(c.DataDir, KeyStoreDir)
}
if len(c.WhisperConfig.DataDir) == 0 {
c.WhisperConfig.DataDir = makeSubDirPath(c.DataDir, WhisperDataDir)
}
return nil
}
// String dumps config object as nicely indented JSON
func (c *NodeConfig) String() string {
data, _ := json.MarshalIndent(c, "", " ")
return string(data)
}