// Copyright 2016 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// go-ethereum is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
package main
import (
"crypto/ecdsa"
"fmt"
"io/ioutil"
"os"
"runtime"
"strconv"
"strings"
"github.com/ethereum/go-ethereum/accounts"
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/console"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/ethclient"
"github.com/ethereum/go-ethereum/internal/debug"
"github.com/ethereum/go-ethereum/logger"
"github.com/ethereum/go-ethereum/logger/glog"
"github.com/ethereum/go-ethereum/node"
"github.com/ethereum/go-ethereum/p2p"
"github.com/ethereum/go-ethereum/p2p/discover"
"github.com/ethereum/go-ethereum/swarm"
bzzapi "github.com/ethereum/go-ethereum/swarm/api"
"github.com/ethereum/go-ethereum/swarm/network"
"gopkg.in/urfave/cli.v1"
)
const (
clientIdentifier = "swarm"
versionString = "0.2"
)
var (
gitCommit string // Git SHA1 commit hash of the release (set via linker flags)
app = utils.NewApp(gitCommit, "Ethereum Swarm")
)
var (
ChequebookAddrFlag = cli.StringFlag{
Name: "chequebook",
Usage: "chequebook contract address",
}
SwarmAccountFlag = cli.StringFlag{
Name: "bzzaccount",
Usage: "Swarm account key file",
}
SwarmPortFlag = cli.StringFlag{
Name: "bzzport",
Usage: "Swarm local http api port",
}
SwarmNetworkIdFlag = cli.IntFlag{
Name: "bzznetworkid",
Usage: "Network identifier (integer, default 3=swarm testnet)",
Value: network.NetworkId,
}
SwarmConfigPathFlag = cli.StringFlag{
Name: "bzzconfig",
Usage: "Swarm config file path (datadir/bzz)",
}
SwarmSwapEnabled = cli.BoolFlag{
Name: "swap",
Usage: "Swarm SWAP enabled (default false)",
}
SwarmSyncEnabled = cli.BoolTFlag{
Name: "sync",
Usage: "Swarm Syncing enabled (default true)",
}
EthAPI = cli.StringFlag{
Name: "ethapi",
Usage: "URL of the Ethereum API provider",
Value: node.DefaultIPCEndpoint("geth"),
}
SwarmApiFlag = cli.StringFlag{
Name: "bzzapi",
Usage: "Swarm HTTP endpoint",
Value: "http://127.0.0.1:8500",
}
SwarmRecursiveUploadFlag = cli.BoolFlag{
Name: "recursive",
Usage: "Upload directories recursively",
}
SwarmWantManifestFlag = cli.BoolTFlag{
Name: "manifest",
Usage: "Automatic manifest upload",
}
)
var defaultBootnodes = []string{}
func init() {
// Override flag defaults so bzzd can run alongside geth.
utils.ListenPortFlag.Value = 30399
utils.IPCPathFlag.Value = utils.DirectoryString{Value: "bzzd.ipc"}
utils.IPCApiFlag.Value = "admin, bzz, chequebook, debug, rpc, web3"
// Set up the cli app.
app.Action = bzzd
app.HideVersion = true // we have a command to print the version
app.Copyright = "Copyright 2013-2016 The go-ethereum Authors"
app.Commands = []cli.Command{
cli.Command{
Action: version,
Name: "version",
Usage: "Print version numbers",
ArgsUsage: " ",
Description: `
The output of this command is supposed to be machine-readable.
`,
},
cli.Command{
Action: upload,
Name: "up",
Usage: "upload a file or directory to swarm using the HTTP API",
ArgsUsage: " <file>",
Description: `
"upload a file or directory to swarm using the HTTP API and prints the root hash",
`,
},
cli.Command{
Action: hash,
Name: "hash",
Usage: "print the swarm hash of a file or directory",
ArgsUsage: " <file>",
Description: `
Prints the swarm hash of file or directory.
`,
},
}
app.Flags = []cli.Flag{
utils.IdentityFlag,
utils.DataDirFlag,
utils.BootnodesFlag,
utils.KeyStoreDirFlag,
utils.ListenPortFlag,
utils.NoDiscoverFlag,
utils.DiscoveryV5Flag,
utils.NetrestrictFlag,
utils.NodeKeyFileFlag,
utils.NodeKeyHexFlag,
utils.MaxPeersFlag,
utils.NATFlag,
utils.IPCDisabledFlag,
utils.IPCApiFlag,
utils.IPCPathFlag,
// bzzd-specific flags
EthAPI,
SwarmConfigPathFlag,
SwarmSwapEnabled,
SwarmSyncEnabled,
SwarmPortFlag,
SwarmAccountFlag,
SwarmNetworkIdFlag,
ChequebookAddrFlag,
// upload flags
SwarmApiFlag,
SwarmRecursiveUploadFlag,
SwarmWantManifestFlag,
}
app.Flags = append(app.Flags, debug.Flags...)
app.Before = func(ctx *cli.Context) error {
runtime.GOMAXPROCS(runtime.NumCPU())
return debug.Setup(ctx)
}
app.After = func(ctx *cli.Context) error {
debug.Exit()
return nil
}
}
func main() {
if err := app.Run(os.Args); err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
}
func version(ctx *cli.Context) error {
fmt.Println(strings.Title(clientIdentifier))
fmt.Println("Version:", versionString)
if gitCommit != "" {
fmt.Println("Git Commit:", gitCommit)
}
fmt.Println("Network Id:", ctx.GlobalInt(utils.NetworkIdFlag.Name))
fmt.Println("Go Version:", runtime.Version())
fmt.Println("OS:", runtime.GOOS)
fmt.Printf("GOPATH=%s\n", os.Getenv("GOPATH"))
fmt.Printf("GOROOT=%s\n", runtime.GOROOT())
return nil
}
func bzzd(ctx *cli.Context) error {
stack := utils.MakeNode(ctx, clientIdentifier, gitCommit)
registerBzzService(ctx, stack)
utils.StartNode(stack)
// Add bootnodes as initial peers.
if ctx.GlobalIsSet(utils.BootnodesFlag.Name) {
bootnodes := strings.Split(ctx.GlobalString(utils.BootnodesFlag.Name), ",")
injectBootnodes(stack.Server(), bootnodes)
} else {
injectBootnodes(stack.Server(), defaultBootnodes)
}
stack.Wait()
return nil
}
func registerBzzService(ctx *cli.Context, stack *node.Node) {
prvkey := getAccount(ctx, stack)
chbookaddr := common.HexToAddress(ctx.GlobalString(ChequebookAddrFlag.Name))
bzzdir := ctx.GlobalString(SwarmConfigPathFlag.Name)
if bzzdir == "" {
bzzdir = stack.InstanceDir()
}
bzzconfig, err := bzzapi.NewConfig(bzzdir, chbookaddr, prvkey, ctx.GlobalUint64(SwarmNetworkIdFlag.Name))
if err != nil {
utils.Fatalf("unable to configure swarm: %v", err)
}
bzzport := ctx.GlobalString(SwarmPortFlag.Name)
if len(bzzport) > 0 {
bzzconfig.Port = bzzport
}
swapEnabled := ctx.GlobalBool(SwarmSwapEnabled.Name)
syncEnabled := ctx.GlobalBoolT(SwarmSyncEnabled.Name)
ethapi := ctx.GlobalString(EthAPI.Name)
boot := func(ctx *node.ServiceContext) (node.Service, error) {
var client *ethclient.Client
if ethapi == "" {
err = fmt.Errorf("use ethapi flag to connect to a an eth client and talk to the blockchain")
} else {
client, err = ethclient.Dial(ethapi)
}
if err != nil {
utils.Fatalf("Can't connect: %v", err)
}
return swarm.NewSwarm(ctx, client, bzzconfig, swapEnabled, syncEnabled)
}
if err := stack.Register(boot); err != nil {
utils.Fatalf("Failed to register the Swarm service: %v", err)
}
}
func getAccount(ctx *cli.Context, stack *node.Node) *ecdsa.PrivateKey {
keyid := ctx.GlobalString(SwarmAccountFlag.Name)
if keyid == "" {
utils.Fatalf("Option %q is required", SwarmAccountFlag.Name)
}
// Try to load the arg as a hex key file.
if key, err := crypto.LoadECDSA(keyid); err == nil {
glog.V(logger.Info).Infof("swarm account key loaded: %#x", crypto.PubkeyToAddress(key.PublicKey))
return key
}
// Otherwise try getting it from the keystore.
return decryptStoreAccount(stack.AccountManager(), keyid)
}
func decryptStoreAccount(accman *accounts.Manager, account string) *ecdsa.PrivateKey {
var a accounts.Account
var err error
if common.IsHexAddress(account) {
a, err = accman.Find(accounts.Account{Address: common.HexToAddress(account)})
} else if ix, ixerr := strconv.Atoi(account); ixerr == nil {
a, err = accman.AccountByIndex(ix)
} else {
utils.Fatalf("Can't find swarm account key %s", account)
}
if err != nil {
utils.Fatalf("Can't find swarm account key: %v", err)
}
keyjson, err := ioutil.ReadFile(a.File)
if err != nil {
utils.Fatalf("Can't load swarm account key: %v", err)
}
for i := 1; i <= 3; i++ {
passphrase := promptPassphrase(fmt.Sprintf("Unlocking swarm account %s [%d/3]", a.Address.Hex(), i))
key, err := accounts.DecryptKey(keyjson, passphrase)
if err == nil {
return key.PrivateKey
}
}
utils.Fatalf("Can't decrypt swarm account key")
return nil
}
func promptPassphrase(prompt string) string {
if prompt != "" {
fmt.Println(prompt)
}
password, err := console.Stdin.PromptPassword("Passphrase: ")
if err != nil {
utils.Fatalf("Failed to read passphrase: %v", err)
}
return password
}
func injectBootnodes(srv *p2p.Server, nodes []string) {
for _, url := range nodes {
n, err := discover.ParseNode(url)
if err != nil {
glog.Errorf("invalid bootnode %q", err)
continue
}
srv.AddPeer(n)
}
}
