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authorJanos Guljas <janos@resenje.org>2017-12-01 17:32:14 +0800
committerJanos Guljas <janos@resenje.org>2017-12-01 18:25:50 +0800
commit057af8c5c842714feff675faeab089e497ec1739 (patch)
tree6cf0ddb52aeccf9e316c62d53f2683fb42804916 /cmd
parent5aa3eac22d80c754d70651a918bccc9b3d1d216f (diff)
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swarm: add CLI --ens-endpoint flag (#14386)
Implement a CLI flag that can be repeated to allow multiple ENS resolvers for different TLDs.
Diffstat (limited to 'cmd')
-rw-r--r--cmd/swarm/main.go103
-rw-r--r--cmd/swarm/main_test.go141
2 files changed, 190 insertions, 54 deletions
diff --git a/cmd/swarm/main.go b/cmd/swarm/main.go
index 603fd9b94..98a0352dc 100644
--- a/cmd/swarm/main.go
+++ b/cmd/swarm/main.go
@@ -17,11 +17,9 @@
package main
import (
- "context"
"crypto/ecdsa"
"fmt"
"io/ioutil"
- "math/big"
"os"
"os/signal"
"runtime"
@@ -29,14 +27,13 @@ import (
"strconv"
"strings"
"syscall"
- "time"
+ "unicode"
"github.com/ethereum/go-ethereum/accounts"
"github.com/ethereum/go-ethereum/accounts/keystore"
"github.com/ethereum/go-ethereum/cmd/utils"
"github.com/ethereum/go-ethereum/common"
"github.com/ethereum/go-ethereum/console"
- "github.com/ethereum/go-ethereum/contracts/ens"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/ethclient"
"github.com/ethereum/go-ethereum/internal/debug"
@@ -45,7 +42,6 @@ import (
"github.com/ethereum/go-ethereum/p2p"
"github.com/ethereum/go-ethereum/p2p/discover"
"github.com/ethereum/go-ethereum/params"
- "github.com/ethereum/go-ethereum/rpc"
"github.com/ethereum/go-ethereum/swarm"
bzzapi "github.com/ethereum/go-ethereum/swarm/api"
"gopkg.in/urfave/cli.v1"
@@ -101,6 +97,10 @@ var (
Name: "sync",
Usage: "Swarm Syncing enabled (default true)",
}
+ EnsEndpointsFlag = cli.StringSliceFlag{
+ Name: "ens-endpoint",
+ Usage: "ENS API endpoint for a TLD and with contract address, can be repeated, format [tld:][contract-addr@]url",
+ }
EnsAPIFlag = cli.StringFlag{
Name: "ens-api",
Usage: "URL of the Ethereum API provider to use for ENS record lookups",
@@ -323,6 +323,7 @@ DEPRECATED: use 'swarm db clean'.
utils.PasswordFileFlag,
// bzzd-specific flags
CorsStringFlag,
+ EnsEndpointsFlag,
EnsAPIFlag,
EnsAddrFlag,
SwarmConfigPathFlag,
@@ -416,38 +417,6 @@ func bzzd(ctx *cli.Context) error {
return nil
}
-// detectEnsAddr determines the ENS contract address by getting both the
-// version and genesis hash using the client and matching them to either
-// mainnet or testnet addresses
-func detectEnsAddr(client *rpc.Client) (common.Address, error) {
- ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
- defer cancel()
-
- var version string
- if err := client.CallContext(ctx, &version, "net_version"); err != nil {
- return common.Address{}, err
- }
-
- block, err := ethclient.NewClient(client).BlockByNumber(ctx, big.NewInt(0))
- if err != nil {
- return common.Address{}, err
- }
-
- switch {
-
- case version == "1" && block.Hash() == params.MainnetGenesisHash:
- log.Info("using Mainnet ENS contract address", "addr", ens.MainNetAddress)
- return ens.MainNetAddress, nil
-
- case version == "3" && block.Hash() == params.TestnetGenesisHash:
- log.Info("using Testnet ENS contract address", "addr", ens.TestNetAddress)
- return ens.TestNetAddress, nil
-
- default:
- return common.Address{}, fmt.Errorf("unknown version and genesis hash: %s %s", version, block.Hash())
- }
-}
-
func registerBzzService(ctx *cli.Context, stack *node.Node) {
prvkey := getAccount(ctx, stack)
@@ -476,6 +445,7 @@ func registerBzzService(ctx *cli.Context, stack *node.Node) {
utils.Fatalf("SWAP is enabled but --swap-api is not set")
}
+ ensEndpoints := ctx.GlobalStringSlice(EnsEndpointsFlag.Name)
ensapi := ctx.GlobalString(EnsAPIFlag.Name)
ensAddr := ctx.GlobalString(EnsAddrFlag.Name)
@@ -491,34 +461,59 @@ func registerBzzService(ctx *cli.Context, stack *node.Node) {
}
}
- var ensClient *ethclient.Client
+ ensClientConfigs := []swarm.ENSClientConfig{}
if ensapi != "" {
- log.Info("connecting to ENS API", "url", ensapi)
- client, err := rpc.Dial(ensapi)
- if err != nil {
- return nil, fmt.Errorf("error connecting to ENS API %s: %s", ensapi, err)
- }
- ensClient = ethclient.NewClient(client)
-
- if ensAddr != "" {
- bzzconfig.EnsRoot = common.HexToAddress(ensAddr)
- } else {
- ensAddr, err := detectEnsAddr(client)
- if err == nil {
- bzzconfig.EnsRoot = ensAddr
- } else {
- log.Warn(fmt.Sprintf("could not determine ENS contract address, using default %s", bzzconfig.EnsRoot), "err", err)
+ ensClientConfigs = append(ensClientConfigs, swarm.ENSClientConfig{
+ Endpoint: ensapi,
+ ContractAddress: ensAddr,
+ })
+ }
+ if ensEndpoints != nil {
+ for _, s := range ensEndpoints {
+ if s != "" {
+ ensClientConfigs = append(ensClientConfigs, parseFlagEnsEndpoint(s))
}
}
}
+ if len(ensClientConfigs) == 0 {
+ log.Warn("No ENS, please specify non-empty --ens-api or --ens-endpoint to use domain name resolution")
+ }
- return swarm.NewSwarm(ctx, swapClient, ensClient, bzzconfig, swapEnabled, syncEnabled, cors)
+ return swarm.NewSwarm(ctx, swapClient, ensClientConfigs, bzzconfig, swapEnabled, syncEnabled, cors)
}
if err := stack.Register(boot); err != nil {
utils.Fatalf("Failed to register the Swarm service: %v", err)
}
}
+func parseFlagEnsEndpoint(s string) swarm.ENSClientConfig {
+ isAllLetterString := func(s string) bool {
+ for _, r := range s {
+ if !unicode.IsLetter(r) {
+ return false
+ }
+ }
+ return true
+ }
+ endpoint := s
+ var addr, tld string
+ if i := strings.Index(endpoint, ":"); i > 0 {
+ if isAllLetterString(endpoint[:i]) && len(endpoint) > i+2 && endpoint[i+1:i+3] != "//" {
+ tld = endpoint[:i]
+ endpoint = endpoint[i+1:]
+ }
+ }
+ if i := strings.Index(endpoint, "@"); i > 0 {
+ addr = endpoint[:i]
+ endpoint = endpoint[i+1:]
+ }
+ return swarm.ENSClientConfig{
+ Endpoint: endpoint,
+ ContractAddress: addr,
+ TLD: tld,
+ }
+}
+
func getAccount(ctx *cli.Context, stack *node.Node) *ecdsa.PrivateKey {
keyid := ctx.GlobalString(SwarmAccountFlag.Name)
diff --git a/cmd/swarm/main_test.go b/cmd/swarm/main_test.go
new file mode 100644
index 000000000..054034434
--- /dev/null
+++ b/cmd/swarm/main_test.go
@@ -0,0 +1,141 @@
+// Copyright 2017 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 (
+ "testing"
+
+ "github.com/ethereum/go-ethereum/swarm"
+)
+
+func TestParseFlagEnsEndpoint(t *testing.T) {
+ for _, x := range []struct {
+ description string
+ value string
+ config swarm.ENSClientConfig
+ }{
+ {
+ description: "IPC endpoint",
+ value: "/data/testnet/geth.ipc",
+ config: swarm.ENSClientConfig{
+ Endpoint: "/data/testnet/geth.ipc",
+ },
+ },
+ {
+ description: "HTTP endpoint",
+ value: "http://127.0.0.1:1234",
+ config: swarm.ENSClientConfig{
+ Endpoint: "http://127.0.0.1:1234",
+ },
+ },
+ {
+ description: "WS endpoint",
+ value: "ws://127.0.0.1:1234",
+ config: swarm.ENSClientConfig{
+ Endpoint: "ws://127.0.0.1:1234",
+ },
+ },
+ {
+ description: "IPC Endpoint and TLD",
+ value: "test:/data/testnet/geth.ipc",
+ config: swarm.ENSClientConfig{
+ Endpoint: "/data/testnet/geth.ipc",
+ TLD: "test",
+ },
+ },
+ {
+ description: "HTTP endpoint and TLD",
+ value: "test:http://127.0.0.1:1234",
+ config: swarm.ENSClientConfig{
+ Endpoint: "http://127.0.0.1:1234",
+ TLD: "test",
+ },
+ },
+ {
+ description: "WS endpoint and TLD",
+ value: "test:ws://127.0.0.1:1234",
+ config: swarm.ENSClientConfig{
+ Endpoint: "ws://127.0.0.1:1234",
+ TLD: "test",
+ },
+ },
+ {
+ description: "IPC Endpoint and contract address",
+ value: "314159265dD8dbb310642f98f50C066173C1259b@/data/testnet/geth.ipc",
+ config: swarm.ENSClientConfig{
+ Endpoint: "/data/testnet/geth.ipc",
+ ContractAddress: "314159265dD8dbb310642f98f50C066173C1259b",
+ },
+ },
+ {
+ description: "HTTP endpoint and contract address",
+ value: "314159265dD8dbb310642f98f50C066173C1259b@http://127.0.0.1:1234",
+ config: swarm.ENSClientConfig{
+ Endpoint: "http://127.0.0.1:1234",
+ ContractAddress: "314159265dD8dbb310642f98f50C066173C1259b",
+ },
+ },
+ {
+ description: "WS endpoint and contract address",
+ value: "314159265dD8dbb310642f98f50C066173C1259b@ws://127.0.0.1:1234",
+ config: swarm.ENSClientConfig{
+ Endpoint: "ws://127.0.0.1:1234",
+ ContractAddress: "314159265dD8dbb310642f98f50C066173C1259b",
+ },
+ },
+ {
+ description: "IPC Endpoint, TLD and contract address",
+ value: "test:314159265dD8dbb310642f98f50C066173C1259b@/data/testnet/geth.ipc",
+ config: swarm.ENSClientConfig{
+ Endpoint: "/data/testnet/geth.ipc",
+ ContractAddress: "314159265dD8dbb310642f98f50C066173C1259b",
+ TLD: "test",
+ },
+ },
+ {
+ description: "HTTP endpoint, TLD and contract address",
+ value: "eth:314159265dD8dbb310642f98f50C066173C1259b@http://127.0.0.1:1234",
+ config: swarm.ENSClientConfig{
+ Endpoint: "http://127.0.0.1:1234",
+ ContractAddress: "314159265dD8dbb310642f98f50C066173C1259b",
+ TLD: "eth",
+ },
+ },
+ {
+ description: "WS endpoint, TLD and contract address",
+ value: "eth:314159265dD8dbb310642f98f50C066173C1259b@ws://127.0.0.1:1234",
+ config: swarm.ENSClientConfig{
+ Endpoint: "ws://127.0.0.1:1234",
+ ContractAddress: "314159265dD8dbb310642f98f50C066173C1259b",
+ TLD: "eth",
+ },
+ },
+ } {
+ t.Run(x.description, func(t *testing.T) {
+ config := parseFlagEnsEndpoint(x.value)
+ if config.Endpoint != x.config.Endpoint {
+ t.Errorf("expected Endpoint %q, got %q", x.config.Endpoint, config.Endpoint)
+ }
+ if config.ContractAddress != x.config.ContractAddress {
+ t.Errorf("expected ContractAddress %q, got %q", x.config.ContractAddress, config.ContractAddress)
+ }
+ if config.TLD != x.config.TLD {
+ t.Errorf("expected TLD %q, got %q", x.config.TLD, config.TLD)
+ }
+ })
+ }
+}