Example #1
0
// createWallet prompts the user for information needed to generate a new wallet
// and generates the wallet accordingly.  The new wallet will reside at the
// provided path.
func createWallet(cfg *config) error {
	dbDir := networkDir(cfg.AppDataDir.Value, activeNet.Params)
	loader := wallet.NewLoader(activeNet.Params, dbDir)

	// When there is a legacy keystore, open it now to ensure any errors
	// don't end up exiting the process after the user has spent time
	// entering a bunch of information.
	netDir := networkDir(cfg.AppDataDir.Value, activeNet.Params)
	keystorePath := filepath.Join(netDir, keystore.Filename)
	var legacyKeyStore *keystore.Store
	_, err := os.Stat(keystorePath)
	if err != nil && !os.IsNotExist(err) {
		// A stat error not due to a non-existant file should be
		// returned to the caller.
		return err
	} else if err == nil {
		// Keystore file exists.
		legacyKeyStore, err = keystore.OpenDir(netDir)
		if err != nil {
			return err
		}
	}

	// Start by prompting for the private passphrase.  When there is an
	// existing keystore, the user will be promped for that passphrase,
	// otherwise they will be prompted for a new one.
	reader := bufio.NewReader(os.Stdin)
	privPass, err := prompt.PrivatePass(reader, legacyKeyStore)
	if err != nil {
		return err
	}

	// When there exists a legacy keystore, unlock it now and set up a
	// callback to import all keystore keys into the new walletdb
	// wallet
	if legacyKeyStore != nil {
		err = legacyKeyStore.Unlock(privPass)
		if err != nil {
			return err
		}

		// Import the addresses in the legacy keystore to the new wallet if
		// any exist, locking each wallet again when finished.
		loader.RunAfterLoad(func(w *wallet.Wallet) {
			defer legacyKeyStore.Lock()

			fmt.Println("Importing addresses from existing wallet...")

			err := w.Manager.Unlock(privPass)
			if err != nil {
				fmt.Printf("ERR: Failed to unlock new wallet "+
					"during old wallet key import: %v", err)
				return
			}
			defer w.Manager.Lock()

			err = convertLegacyKeystore(legacyKeyStore, w.Manager)
			if err != nil {
				fmt.Printf("ERR: Failed to import keys from old "+
					"wallet format: %v", err)
				return
			}

			// Remove the legacy key store.
			err = os.Remove(keystorePath)
			if err != nil {
				fmt.Printf("WARN: Failed to remove legacy wallet "+
					"from'%s'\n", keystorePath)
			}
		})
	}

	// Ascertain the public passphrase.  This will either be a value
	// specified by the user or the default hard-coded public passphrase if
	// the user does not want the additional public data encryption.
	pubPass, err := prompt.PublicPass(reader, privPass,
		[]byte(wallet.InsecurePubPassphrase), []byte(cfg.WalletPass))
	if err != nil {
		return err
	}

	// Ascertain the wallet generation seed.  This will either be an
	// automatically generated value the user has already confirmed or a
	// value the user has entered which has already been validated.
	seed, err := prompt.Seed(reader)
	if err != nil {
		return err
	}

	fmt.Println("Creating the wallet...")
	w, err := loader.CreateNewWallet(pubPass, privPass, seed)
	if err != nil {
		return err
	}

	w.Manager.Close()
	fmt.Println("The wallet has been created successfully.")
	return nil
}
Example #2
0
// walletMain is a work-around main function that is required since deferred
// functions (such as log flushing) are not called with calls to os.Exit.
// Instead, main runs this function and checks for a non-nil error, at which
// point any defers have already run, and if the error is non-nil, the program
// can be exited with an error exit status.
func walletMain() error {
	// Load configuration and parse command line.  This function also
	// initializes logging and configures it accordingly.
	tcfg, _, err := loadConfig()
	if err != nil {
		return err
	}
	cfg = tcfg
	defer backendLog.Flush()

	// Show version at startup.
	log.Infof("Version %s", version())

	if cfg.Profile != "" {
		go func() {
			listenAddr := net.JoinHostPort("", cfg.Profile)
			log.Infof("Profile server listening on %s", listenAddr)
			profileRedirect := http.RedirectHandler("/debug/pprof",
				http.StatusSeeOther)
			http.Handle("/", profileRedirect)
			log.Errorf("%v", http.ListenAndServe(listenAddr, nil))
		}()
	}

	dbDir := networkDir(cfg.AppDataDir.Value, activeNet.Params)
	loader := wallet.NewLoader(activeNet.Params, dbDir)

	// Create and start HTTP server to serve wallet client connections.
	// This will be updated with the wallet and chain server RPC client
	// created below after each is created.
	rpcs, legacyRPCServer, err := startRPCServers(loader)
	if err != nil {
		log.Errorf("Unable to create RPC servers: %v", err)
		return err
	}

	// Create and start chain RPC client so it's ready to connect to
	// the wallet when loaded later.
	if !cfg.NoInitialLoad {
		go rpcClientConnectLoop(legacyRPCServer, loader)
	}

	loader.RunAfterLoad(func(w *wallet.Wallet) {
		startWalletRPCServices(w, rpcs, legacyRPCServer)
	})

	if !cfg.NoInitialLoad {
		// Load the wallet database.  It must have been created already
		// or this will return an appropriate error.
		_, err = loader.OpenExistingWallet([]byte(cfg.WalletPass), true)
		if err != nil {
			log.Error(err)
			return err
		}
	}

	// Add interrupt handlers to shutdown the various process components
	// before exiting.  Interrupt handlers run in LIFO order, so the wallet
	// (which should be closed last) is added first.
	addInterruptHandler(func() {
		err := loader.UnloadWallet()
		if err != nil && err != wallet.ErrNotLoaded {
			log.Errorf("Failed to close wallet: %v", err)
		}
	})
	if rpcs != nil {
		addInterruptHandler(func() {
			// TODO: Does this need to wait for the grpc server to
			// finish up any requests?
			log.Warn("Stopping RPC server...")
			rpcs.Stop()
			log.Info("RPC server shutdown")
		})
	}
	if legacyRPCServer != nil {
		addInterruptHandler(func() {
			log.Warn("Stopping legacy RPC server...")
			legacyRPCServer.Stop()
			log.Info("Legacy RPC server shutdown")
		})
		go func() {
			<-legacyRPCServer.RequestProcessShutdown()
			simulateInterrupt()
		}()
	}

	<-interruptHandlersDone
	log.Info("Shutdown complete")
	return nil
}
Example #3
0
// NewLightningWallet creates/opens and initializes a LightningWallet instance.
// If the wallet has never been created (according to the passed dataDir), first-time
// setup is executed.
// TODO(roasbeef): fin...add config
func NewLightningWallet(config *Config) (*LightningWallet, walletdb.DB, error) {
	// Ensure the wallet exists or create it when the create flag is set.
	netDir := networkDir(config.DataDir, config.NetParams)

	var pubPass []byte
	if config.PublicPass == nil {
		pubPass = defaultPubPassphrase
	} else {
		pubPass = config.PublicPass
	}

	var walletDB walletdb.DB
	loader := btcwallet.NewLoader(config.NetParams, netDir)
	loader.RunAfterLoad(func(w *btcwallet.Wallet, db walletdb.DB) {
		walletDB = db
	})

	walletExists, err := loader.WalletExists()
	if err != nil {
		return nil, nil, err
	}

	var createID bool
	var wallet *btcwallet.Wallet
	if !walletExists {
		// Wallet has never been created, perform initial set up.
		wallet, err = loader.CreateNewWallet(pubPass, config.PrivatePass,
			config.HdSeed)
		if err != nil {
			return nil, nil, err
		}

		createID = true
	} else {
		// Wallet has been created and been initialized at this point, open it
		// along with all the required DB namepsaces, and the DB itself.
		wallet, err = loader.OpenExistingWallet(pubPass, false)
		if err != nil {
			return nil, nil, err
		}
	}

	// Create a special namespace for our unique payment channel related
	// meta-data. Subsequently initializing the channeldb around the
	// created namespace.
	lnNamespace, err := walletDB.Namespace(lightningNamespaceKey)
	if err != nil {
		return nil, nil, err
	}
	cdb := channeldb.New(wallet.Manager, lnNamespace)

	if err := wallet.Manager.Unlock(config.PrivatePass); err != nil {
		return nil, nil, err
	}

	// If we just created the wallet, then reserve, and store a key for
	// our ID within the Lightning Network.
	if createID {
		adrs, err := wallet.Manager.NextInternalAddresses(waddrmgr.DefaultAccountNum, 1)
		if err != nil {
			return nil, nil, err
		}

		idPubkeyHash := adrs[0].Address().ScriptAddress()
		if err := cdb.PutIdKey(idPubkeyHash); err != nil {
			return nil, nil, err
		}
		log.Printf("stored identity key pubkey hash in channeldb\n")
	}

	chainNotifier, err := btcdnotify.NewBtcdNotifier(wallet)
	if err != nil {
		return nil, nil, err
	}

	// TODO(roasbeef): logging
	return &LightningWallet{
		db:            walletDB,
		chainNotifier: chainNotifier,
		Wallet:        wallet,
		ChannelDB:     cdb,
		msgChan:       make(chan interface{}, msgBufferSize),
		// TODO(roasbeef): make this atomic.Uint32 instead? Which is
		// faster, locks or CAS? I'm guessing CAS because assembly:
		//  * https://golang.org/src/sync/atomic/asm_amd64.s
		nextFundingID: 0,
		cfg:           config,
		fundingLimbo:  make(map[uint64]*ChannelReservation),
		quit:          make(chan struct{}),
	}, walletDB, nil
}