github.com/gilgames000/kcc-geth@v1.0.6/cmd/devp2p/rlpxcmd.go (about)

     1  // Copyright 2020 The go-ethereum Authors
     2  // This file is part of go-ethereum.
     3  //
     4  // go-ethereum is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // go-ethereum is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU General Public License
    15  // along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  package main
    18  
    19  import (
    20  	"fmt"
    21  	"net"
    22  
    23  	"github.com/ethereum/go-ethereum/cmd/devp2p/internal/ethtest"
    24  	"github.com/ethereum/go-ethereum/crypto"
    25  	"github.com/ethereum/go-ethereum/p2p"
    26  	"github.com/ethereum/go-ethereum/p2p/rlpx"
    27  	"github.com/ethereum/go-ethereum/rlp"
    28  	"gopkg.in/urfave/cli.v1"
    29  )
    30  
    31  var (
    32  	rlpxCommand = cli.Command{
    33  		Name:  "rlpx",
    34  		Usage: "RLPx Commands",
    35  		Subcommands: []cli.Command{
    36  			rlpxPingCommand,
    37  			rlpxEthTestCommand,
    38  		},
    39  	}
    40  	rlpxPingCommand = cli.Command{
    41  		Name:   "ping",
    42  		Usage:  "ping <node>",
    43  		Action: rlpxPing,
    44  	}
    45  	rlpxEthTestCommand = cli.Command{
    46  		Name:      "eth-test",
    47  		Usage:     "Runs tests against a node",
    48  		ArgsUsage: "<node> <chain.rlp> <genesis.json>",
    49  		Action:    rlpxEthTest,
    50  		Flags: []cli.Flag{
    51  			testPatternFlag,
    52  			testTAPFlag,
    53  		},
    54  	}
    55  )
    56  
    57  func rlpxPing(ctx *cli.Context) error {
    58  	n := getNodeArg(ctx)
    59  	fd, err := net.Dial("tcp", fmt.Sprintf("%v:%d", n.IP(), n.TCP()))
    60  	if err != nil {
    61  		return err
    62  	}
    63  	conn := rlpx.NewConn(fd, n.Pubkey())
    64  	ourKey, _ := crypto.GenerateKey()
    65  	_, err = conn.Handshake(ourKey)
    66  	if err != nil {
    67  		return err
    68  	}
    69  	code, data, _, err := conn.Read()
    70  	if err != nil {
    71  		return err
    72  	}
    73  	switch code {
    74  	case 0:
    75  		var h ethtest.Hello
    76  		if err := rlp.DecodeBytes(data, &h); err != nil {
    77  			return fmt.Errorf("invalid handshake: %v", err)
    78  		}
    79  		fmt.Printf("%+v\n", h)
    80  	case 1:
    81  		var msg []p2p.DiscReason
    82  		if rlp.DecodeBytes(data, &msg); len(msg) == 0 {
    83  			return fmt.Errorf("invalid disconnect message")
    84  		}
    85  		return fmt.Errorf("received disconnect message: %v", msg[0])
    86  	default:
    87  		return fmt.Errorf("invalid message code %d, expected handshake (code zero)", code)
    88  	}
    89  	return nil
    90  }
    91  
    92  // rlpxEthTest runs the eth protocol test suite.
    93  func rlpxEthTest(ctx *cli.Context) error {
    94  	if ctx.NArg() < 3 {
    95  		exit("missing path to chain.rlp as command-line argument")
    96  	}
    97  	suite, err := ethtest.NewSuite(getNodeArg(ctx), ctx.Args()[1], ctx.Args()[2])
    98  	if err != nil {
    99  		exit(err)
   100  	}
   101  	return runTests(ctx, suite.EthTests())
   102  }