cmd/bzzd: add swarm server daemon
This commit is contained in:
Felix Lange
parent
5cd4430a8d
commit
e336b0d60e
246
cmd/bzzd/main.go
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246
cmd/bzzd/main.go
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// Copyright 2016 The go-ethereum Authors
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// This file is part of go-ethereum.
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//
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// go-ethereum is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// go-ethereum is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
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package main
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import (
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"crypto/ecdsa"
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"fmt"
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"io/ioutil"
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"os"
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"runtime"
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"strconv"
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"github.com/ethereum/go-ethereum/accounts"
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"github.com/ethereum/go-ethereum/cmd/utils"
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"github.com/ethereum/go-ethereum/common"
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"github.com/ethereum/go-ethereum/console"
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"github.com/ethereum/go-ethereum/crypto"
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"github.com/ethereum/go-ethereum/ethclient"
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"github.com/ethereum/go-ethereum/internal/debug"
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"github.com/ethereum/go-ethereum/logger"
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"github.com/ethereum/go-ethereum/logger/glog"
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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/swarm"
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bzzapi "github.com/ethereum/go-ethereum/swarm/api"
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"gopkg.in/urfave/cli.v1"
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)
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const clientIdentifier = "bzzd"
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var (
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gitCommit string // Git SHA1 commit hash of the release (set via linker flags)
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app = utils.NewApp(gitCommit, "Ethereum Swarm server daemon")
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)
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var (
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ChequebookAddrFlag = cli.StringFlag{
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Name: "chequebook",
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Usage: "chequebook contract address",
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}
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SwarmAccountFlag = cli.StringFlag{
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Name: "bzzaccount",
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Usage: "Swarm account key file",
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}
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SwarmPortFlag = cli.StringFlag{
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Name: "bzzport",
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Usage: "Swarm local http api port",
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}
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SwarmConfigPathFlag = cli.StringFlag{
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Name: "bzzconfig",
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Usage: "Swarm config file path (datadir/bzz)",
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}
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SwarmSwapDisabled = cli.BoolFlag{
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Name: "bzznoswap",
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Usage: "Swarm SWAP disabled (default false)",
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}
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SwarmSyncDisabled = cli.BoolFlag{
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Name: "bzznosync",
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Usage: "Swarm Syncing disabled (default false)",
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}
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EthAPI = cli.StringFlag{
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Name: "ethapi",
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Usage: "URL of the Ethereum API provider",
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Value: node.DefaultIPCEndpoint("geth"),
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}
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)
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var defaultBootnodes = []string{}
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func init() {
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// Override flag defaults so bzzd can run alongside geth.
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utils.ListenPortFlag.Value = 30399
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utils.IPCPathFlag.Value = utils.DirectoryString{Value: "bzzd.ipc"}
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// Set up the cli app.
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app.Commands = nil
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app.Action = bzzd
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app.Flags = []cli.Flag{
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utils.IdentityFlag,
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utils.DataDirFlag,
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utils.BootnodesFlag,
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utils.KeyStoreDirFlag,
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utils.ListenPortFlag,
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utils.MaxPeersFlag,
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utils.NATFlag,
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utils.NodeKeyFileFlag,
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utils.NodeKeyHexFlag,
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utils.IPCDisabledFlag,
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utils.IPCApiFlag,
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utils.IPCPathFlag,
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// bzzd-specific flags
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EthAPI,
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SwarmConfigPathFlag,
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SwarmSwapDisabled,
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SwarmSyncDisabled,
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SwarmPortFlag,
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SwarmAccountFlag,
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ChequebookAddrFlag,
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}
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app.Flags = append(app.Flags, debug.Flags...)
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app.Before = func(ctx *cli.Context) error {
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runtime.GOMAXPROCS(runtime.NumCPU())
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return debug.Setup(ctx)
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}
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app.After = func(ctx *cli.Context) error {
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debug.Exit()
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return nil
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}
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}
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func main() {
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if err := app.Run(os.Args); err != nil {
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fmt.Fprintln(os.Stderr, err)
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os.Exit(1)
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}
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}
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func bzzd(ctx *cli.Context) error {
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stack := utils.MakeNode(ctx, clientIdentifier, gitCommit)
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registerBzzService(ctx, stack)
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utils.StartNode(stack)
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// Add bootnodes as initial peers.
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if ctx.GlobalIsSet(utils.BootnodesFlag.Name) {
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injectBootnodes(stack.Server(), ctx.GlobalStringSlice(utils.BootnodesFlag.Name))
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} else {
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injectBootnodes(stack.Server(), defaultBootnodes)
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}
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stack.Wait()
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return nil
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}
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func registerBzzService(ctx *cli.Context, stack *node.Node) {
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prvkey := getAccount(ctx, stack)
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chbookaddr := common.HexToAddress(ctx.GlobalString(ChequebookAddrFlag.Name))
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bzzdir := ctx.GlobalString(SwarmConfigPathFlag.Name)
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if bzzdir == "" {
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bzzdir = stack.InstanceDir()
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}
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bzzconfig, err := bzzapi.NewConfig(bzzdir, chbookaddr, prvkey)
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if err != nil {
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utils.Fatalf("unable to configure swarm: %v", err)
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}
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bzzport := ctx.GlobalString(SwarmPortFlag.Name)
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if len(bzzport) > 0 {
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bzzconfig.Port = bzzport
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}
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swapEnabled := !ctx.GlobalBool(SwarmSwapDisabled.Name)
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syncEnabled := !ctx.GlobalBool(SwarmSyncDisabled.Name)
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ethapi := ctx.GlobalString(EthAPI.Name)
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if ethapi == "" {
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utils.Fatalf("Option %q must not be empty", EthAPI.Name)
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}
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boot := func(ctx *node.ServiceContext) (node.Service, error) {
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client, err := ethclient.Dial(ethapi)
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if err != nil {
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utils.Fatalf("Can't connect: %v", err)
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}
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return swarm.NewSwarm(ctx, client, bzzconfig, swapEnabled, syncEnabled)
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}
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if err := stack.Register(boot); err != nil {
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utils.Fatalf("Failed to register the Swarm service: %v", err)
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}
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}
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func getAccount(ctx *cli.Context, stack *node.Node) *ecdsa.PrivateKey {
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keyid := ctx.GlobalString(SwarmAccountFlag.Name)
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if keyid == "" {
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utils.Fatalf("Option %q is required", SwarmAccountFlag.Name)
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}
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// Try to load the arg as a hex key file.
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if key, err := crypto.LoadECDSA(keyid); err == nil {
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glog.V(logger.Info).Infof("swarm account key loaded: %#x", crypto.PubkeyToAddress(key.PublicKey))
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return key
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}
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// Otherwise try getting it from the keystore.
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return decryptStoreAccount(stack.AccountManager(), keyid)
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}
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func decryptStoreAccount(accman *accounts.Manager, account string) *ecdsa.PrivateKey {
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var a accounts.Account
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var err error
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if common.IsHexAddress(account) {
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a, err = accman.Find(accounts.Account{Address: common.HexToAddress(account)})
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} else if ix, ixerr := strconv.Atoi(account); ixerr == nil {
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a, err = accman.AccountByIndex(ix)
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} else {
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utils.Fatalf("Can't find swarm account key %s", account)
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}
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if err != nil {
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utils.Fatalf("Can't find swarm account key: %v", err)
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}
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keyjson, err := ioutil.ReadFile(a.File)
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if err != nil {
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utils.Fatalf("Can't load swarm account key: %v", err)
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}
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for i := 1; i <= 3; i++ {
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passphrase := promptPassphrase(fmt.Sprintf("Unlocking swarm account %s [%d/3]", a.Address.Hex(), i))
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key, err := accounts.DecryptKey(keyjson, passphrase)
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if err == nil {
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return key.PrivateKey
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}
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}
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utils.Fatalf("Can't decrypt swarm account key")
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return nil
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}
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func promptPassphrase(prompt string) string {
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if prompt != "" {
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fmt.Println(prompt)
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}
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password, err := console.Stdin.PromptPassword("Passphrase: ")
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if err != nil {
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utils.Fatalf("Failed to read passphrase: %v", err)
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}
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return password
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}
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func injectBootnodes(srv *p2p.Server, nodes []string) {
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for _, url := range nodes {
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n, err := discover.ParseNode(url)
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if err != nil {
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glog.Errorf("invalid bootnode %q", err)
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}
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srv.AddPeer(n)
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}
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}
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