config/config.go

   1 package config
   2
   3 import (
   4         "encoding/hex"
   5         "io"
   6         "os"
   7         "os/user"
   8         "path/filepath"
   9         "runtime"
  10
  11         log "github.com/sirupsen/logrus"
  12
  13         "github.com/vapor/crypto/ed25519/chainkd"
  14 )
  15
  16 var (
  17         // CommonConfig means config object
  18         CommonConfig *Config
  19 )
  20
  21 type Config struct {
  22         // Top level options use an anonymous struct
  23         BaseConfig `mapstructure:",squash"`
  24         // Options for services
  25         P2P        *P2PConfig        `mapstructure:"p2p"`
  26         Wallet     *WalletConfig     `mapstructure:"wallet"`
  27         Auth       *RPCAuthConfig    `mapstructure:"auth"`
  28         Web        *WebConfig        `mapstructure:"web"`
  29         Websocket  *WebsocketConfig  `mapstructure:"ws"`
  30         Federation *FederationConfig `mapstructure:"federation"`
  31 }
  32
  33 // Default configurable parameters.
  34 func DefaultConfig() *Config {
  35         return &Config{
  36                 BaseConfig: DefaultBaseConfig(),
  37                 P2P:        DefaultP2PConfig(),
  38                 Wallet:     DefaultWalletConfig(),
  39                 Auth:       DefaultRPCAuthConfig(),
  40                 Web:        DefaultWebConfig(),
  41                 Websocket:  DefaultWebsocketConfig(),
  42                 Federation: DefaultFederationConfig(),
  43         }
  44 }
  45
  46 // Set the RootDir for all Config structs
  47 func (cfg *Config) SetRoot(root string) *Config {
  48         cfg.BaseConfig.RootDir = root
  49         return cfg
  50 }
  51
  52 // NodeKey retrieves the currently configured private key of the node, checking
  53 // first any manually set key, falling back to the one found in the configured
  54 // data folder. If no key can be found, a new one is generated.
  55 func (cfg *Config) PrivateKey() *chainkd.XPrv {
  56         if cfg.XPrv != nil {
  57                 return cfg.XPrv
  58         }
  59
  60         filePath := rootify(cfg.PrivateKeyFile, cfg.BaseConfig.RootDir)
  61         fildReader, err := os.Open(filePath)
  62         if err != nil {
  63                 log.WithField("err", err).Panic("fail on open private key file")
  64         }
  65
  66         defer fildReader.Close()
  67         buf := make([]byte, 128)
  68         if _, err = io.ReadFull(fildReader, buf); err != nil {
  69                 log.WithField("err", err).Panic("fail on read private key file")
  70         }
  71
  72         var xprv chainkd.XPrv
  73         if _, err := hex.Decode(xprv[:], buf); err != nil {
  74                 log.WithField("err", err).Panic("fail on decode private key")
  75         }
  76
  77         cfg.XPrv = &xprv
  78         xpub := cfg.XPrv.XPub()
  79         cfg.XPub = &xpub
  80         return cfg.XPrv
  81 }
  82
  83 //-----------------------------------------------------------------------------
  84 // BaseConfig
  85 type BaseConfig struct {
  86         // The root directory for all data.
  87         // This should be set in viper so it can unmarshal into this struct
  88         RootDir string `mapstructure:"home"`
  89
  90         //The ID of the network to json
  91         ChainID string `mapstructure:"chain_id"`
  92
  93         //log level to set
  94         LogLevel string `mapstructure:"log_level"`
  95
  96         // A custom human readable name for this node
  97         Moniker string `mapstructure:"moniker"`
  98
  99         // TCP or UNIX socket address for the profiling server to listen on
 100         ProfListenAddress string `mapstructure:"prof_laddr"`
 101
 102         Mining bool `mapstructure:"mining"`
 103
 104         // Database backend: leveldb | memdb
 105         DBBackend string `mapstructure:"db_backend"`
 106
 107         // Database directory
 108         DBPath string `mapstructure:"db_dir"`
 109
 110         // Keystore directory
 111         KeysPath string `mapstructure:"keys_dir"`
 112
 113         ApiAddress string `mapstructure:"api_addr"`
 114
 115         VaultMode bool `mapstructure:"vault_mode"`
 116
 117         // log file name
 118         LogFile string `mapstructure:"log_file"`
 119
 120         PrivateKeyFile string `mapstructure:"private_key_file"`
 121         XPrv           *chainkd.XPrv
 122         XPub           *chainkd.XPub
 123
 124         // Federation file name
 125         FederationFileName string `mapstructure:"federation_file"`
 126 }
 127
 128 // Default configurable base parameters.
 129 func DefaultBaseConfig() BaseConfig {
 130         return BaseConfig{
 131                 Moniker:            "anonymous",
 132                 ProfListenAddress:  "",
 133                 Mining:             false,
 134                 DBBackend:          "leveldb",
 135                 DBPath:             "data",
 136                 KeysPath:           "keystore",
 137                 LogFile:            "log",
 138                 PrivateKeyFile:     "node_key.txt",
 139                 FederationFileName: "federation.json",
 140         }
 141 }
 142
 143 func (b BaseConfig) DBDir() string {
 144         return rootify(b.DBPath, b.RootDir)
 145 }
 146
 147 func (b BaseConfig) LogDir() string {
 148         return rootify(b.LogFile, b.RootDir)
 149 }
 150
 151 func (b BaseConfig) KeysDir() string {
 152         return rootify(b.KeysPath, b.RootDir)
 153 }
 154
 155 func (b BaseConfig) FederationFile() string {
 156         return rootify(b.FederationFileName, b.RootDir)
 157 }
 158
 159 // P2PConfig
 160 type P2PConfig struct {
 161         ListenAddress    string `mapstructure:"laddr"`
 162         Seeds            string `mapstructure:"seeds"`
 163         SkipUPNP         bool   `mapstructure:"skip_upnp"`
 164         LANDiscover      bool   `mapstructure:"lan_discoverable"`
 165         MaxNumPeers      int    `mapstructure:"max_num_peers"`
 166         HandshakeTimeout int    `mapstructure:"handshake_timeout"`
 167         DialTimeout      int    `mapstructure:"dial_timeout"`
 168         ProxyAddress     string `mapstructure:"proxy_address"`
 169         ProxyUsername    string `mapstructure:"proxy_username"`
 170         ProxyPassword    string `mapstructure:"proxy_password"`
 171         KeepDial         string `mapstructure:"keep_dial"`
 172         Compression      string `mapstructure:"compression_backend"`
 173 }
 174
 175 // Default configurable p2p parameters.
 176 func DefaultP2PConfig() *P2PConfig {
 177         return &P2PConfig{
 178                 ListenAddress:    "tcp://0.0.0.0:56656",
 179                 SkipUPNP:         false,
 180                 LANDiscover:      true,
 181                 MaxNumPeers:      20,
 182                 HandshakeTimeout: 30,
 183                 DialTimeout:      3,
 184                 ProxyAddress:     "",
 185                 ProxyUsername:    "",
 186                 ProxyPassword:    "",
 187                 Compression:      "snappy",
 188         }
 189 }
 190
 191 //-----------------------------------------------------------------------------
 192 type WalletConfig struct {
 193         Disable  bool   `mapstructure:"disable"`
 194         Rescan   bool   `mapstructure:"rescan"`
 195         TxIndex  bool   `mapstructure:"txindex"`
 196         MaxTxFee uint64 `mapstructure:"max_tx_fee"`
 197 }
 198
 199 type RPCAuthConfig struct {
 200         Disable bool `mapstructure:"disable"`
 201 }
 202
 203 type WebConfig struct {
 204         Closed bool `mapstructure:"closed"`
 205 }
 206
 207 type WebsocketConfig struct {
 208         MaxNumWebsockets     int `mapstructure:"max_num_websockets"`
 209         MaxNumConcurrentReqs int `mapstructure:"max_num_concurrent_reqs"`
 210 }
 211
 212 type FederationConfig struct {
 213         Xpubs  []chainkd.XPub `json:"xpubs"`
 214         Quorum int            `json:"quorum"`
 215 }
 216
 217 // Default configurable rpc's auth parameters.
 218 func DefaultRPCAuthConfig() *RPCAuthConfig {
 219         return &RPCAuthConfig{
 220                 Disable: false,
 221         }
 222 }
 223
 224 // Default configurable web parameters.
 225 func DefaultWebConfig() *WebConfig {
 226         return &WebConfig{
 227                 Closed: false,
 228         }
 229 }
 230
 231 // Default configurable wallet parameters.
 232 func DefaultWalletConfig() *WalletConfig {
 233         return &WalletConfig{
 234                 Disable:  false,
 235                 Rescan:   false,
 236                 TxIndex:  false,
 237                 MaxTxFee: uint64(1000000000),
 238         }
 239 }
 240
 241 func DefaultWebsocketConfig() *WebsocketConfig {
 242         return &WebsocketConfig{
 243                 MaxNumWebsockets:     25,
 244                 MaxNumConcurrentReqs: 20,
 245         }
 246 }
 247
 248 func DefaultFederationConfig() *FederationConfig {
 249         return &FederationConfig{
 250                 Xpubs: []chainkd.XPub{
 251                         xpub("580daf48fa8962100047cb1391da890bb7f2c849fdbc9b368cb4394a4c7cbb0977e2e7ebbf055dc0ef90af6a0d2af01ce7ec56b735d016aab597815ec48552e5"),
 252                         xpub("f3f6bcf61b65fa9d1566455a5688ca8b395efdc22e654963134b5e5cb0a45d8be522d21abc384a73177a7b9d64eba915fcfe2862d86a508a3c46dc410bdd72ad"),
 253                         xpub("53559612f2b7bcada18948b7de39d63947a0e2bd7336d07db1350c54ba5743996b84bf9d18ff7a2457e1a5c70ce5013e4a3b62666ddb03294c53051d5f5c70c0"),
 254                         xpub("7c88cc58adfc71818b08308d43c29de22460b0ea6895449cbec6e458d7dc09e0aea243fa5075ee6621da0d805bd047f6bb207329c5bd2ca3253b172fb323b512"),
 255                 },
 256                 Quorum: 2,
 257         }
 258 }
 259
 260 func xpub(str string) (xpub chainkd.XPub) {
 261         if err := xpub.UnmarshalText([]byte(str)); err != nil {
 262                 log.Panicf("Fail converts a string to xpub")
 263         }
 264         return xpub
 265 }
 266
 267 //-----------------------------------------------------------------------------
 268 // Utils
 269
 270 // helper function to make config creation independent of root dir
 271 func rootify(path, root string) string {
 272         if filepath.IsAbs(path) {
 273                 return path
 274         }
 275         return filepath.Join(root, path)
 276 }
 277
 278 // DefaultDataDir is the default data directory to use for the databases and other
 279 // persistence requirements.
 280 func DefaultDataDir() string {
 281         // Try to place the data folder in the user's home dir
 282         home := homeDir()
 283         if home == "" {
 284                 return "./.vapor"
 285         }
 286         switch runtime.GOOS {
 287         case "darwin":
 288                 return filepath.Join(home, "Library", "Application Support", "Vapor")
 289         case "windows":
 290                 return filepath.Join(home, "AppData", "Roaming", "Vapor")
 291         default:
 292                 return filepath.Join(home, ".vapor")
 293         }
 294 }
 295
 296 func isFolderNotExists(path string) bool {
 297         _, err := os.Stat(path)
 298         return os.IsNotExist(err)
 299 }
 300
 301 func homeDir() string {
 302         if home := os.Getenv("HOME"); home != "" {
 303                 return home
 304         }
 305         if usr, err := user.Current(); err == nil {
 306                 return usr.HomeDir
 307         }
 308         return ""
 309 }