Official Go implementation of the Ethereum protocol
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go-ethereum/cmd/devp2p/rlpxcmd.go

170 lines
4.2 KiB

// Copyright 2020 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 (
"errors"
"fmt"
"net"
"github.com/ethereum/go-ethereum/cmd/devp2p/internal/ethtest"
"github.com/ethereum/go-ethereum/crypto"
"github.com/ethereum/go-ethereum/p2p"
"github.com/ethereum/go-ethereum/p2p/enode"
"github.com/ethereum/go-ethereum/p2p/rlpx"
"github.com/ethereum/go-ethereum/rlp"
"github.com/urfave/cli/v2"
)
var (
rlpxCommand = &cli.Command{
Name: "rlpx",
Usage: "RLPx Commands",
Subcommands: []*cli.Command{
rlpxPingCommand,
rlpxEthTestCommand,
rlpxSnapTestCommand,
},
}
rlpxPingCommand = &cli.Command{
Name: "ping",
Usage: "ping <node>",
Action: rlpxPing,
}
rlpxEthTestCommand = &cli.Command{
Name: "eth-test",
Usage: "Runs eth protocol tests against a node",
ArgsUsage: "<node>",
Action: rlpxEthTest,
Flags: []cli.Flag{
testPatternFlag,
testTAPFlag,
testChainDirFlag,
testNodeFlag,
testNodeJWTFlag,
testNodeEngineFlag,
},
}
rlpxSnapTestCommand = &cli.Command{
Name: "snap-test",
Usage: "Runs snap protocol tests against a node",
ArgsUsage: "",
Action: rlpxSnapTest,
Flags: []cli.Flag{
testPatternFlag,
testTAPFlag,
testChainDirFlag,
testNodeFlag,
testNodeJWTFlag,
testNodeEngineFlag,
},
}
)
func rlpxPing(ctx *cli.Context) error {
n := getNodeArg(ctx)
tcpEndpoint, ok := n.TCPEndpoint()
if !ok {
return errors.New("node has no TCP endpoint")
}
fd, err := net.Dial("tcp", tcpEndpoint.String())
if err != nil {
return err
}
conn := rlpx.NewConn(fd, n.Pubkey())
ourKey, _ := crypto.GenerateKey()
_, err = conn.Handshake(ourKey)
if err != nil {
return err
}
code, data, _, err := conn.Read()
if err != nil {
return err
}
switch code {
case 0:
var h ethtest.Hello
if err := rlp.DecodeBytes(data, &h); err != nil {
return fmt.Errorf("invalid handshake: %v", err)
}
fmt.Printf("%+v\n", h)
case 1:
var msg []p2p.DiscReason
if rlp.DecodeBytes(data, &msg); len(msg) == 0 {
return errors.New("invalid disconnect message")
}
return fmt.Errorf("received disconnect message: %v", msg[0])
default:
return fmt.Errorf("invalid message code %d, expected handshake (code zero) or disconnect (code one)", code)
}
return nil
}
// rlpxEthTest runs the eth protocol test suite.
func rlpxEthTest(ctx *cli.Context) error {
p := cliTestParams(ctx)
suite, err := ethtest.NewSuite(p.node, p.chainDir, p.engineAPI, p.jwt)
if err != nil {
exit(err)
}
return runTests(ctx, suite.EthTests())
}
// rlpxSnapTest runs the snap protocol test suite.
func rlpxSnapTest(ctx *cli.Context) error {
p := cliTestParams(ctx)
suite, err := ethtest.NewSuite(p.node, p.chainDir, p.engineAPI, p.jwt)
if err != nil {
exit(err)
}
return runTests(ctx, suite.SnapTests())
}
type testParams struct {
node *enode.Node
engineAPI string
jwt string
chainDir string
}
func cliTestParams(ctx *cli.Context) *testParams {
nodeStr := ctx.String(testNodeFlag.Name)
if nodeStr == "" {
exit(fmt.Errorf("missing -%s", testNodeFlag.Name))
}
node, err := parseNode(nodeStr)
if err != nil {
exit(err)
}
p := testParams{
node: node,
engineAPI: ctx.String(testNodeEngineFlag.Name),
jwt: ctx.String(testNodeJWTFlag.Name),
chainDir: ctx.String(testChainDirFlag.Name),
}
if p.engineAPI == "" {
exit(fmt.Errorf("missing -%s", testNodeEngineFlag.Name))
}
if p.jwt == "" {
exit(fmt.Errorf("missing -%s", testNodeJWTFlag.Name))
}
if p.chainDir == "" {
exit(fmt.Errorf("missing -%s", testChainDirFlag.Name))
}
return &p
}