github.com/ethxdao/go-ethereum@v0.0.0-20221218102228-5ae34a9cc189/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/ethxdao/go-ethereum/cmd/devp2p/internal/ethtest"
    24  	"github.com/ethxdao/go-ethereum/crypto"
    25  	"github.com/ethxdao/go-ethereum/p2p"
    26  	"github.com/ethxdao/go-ethereum/p2p/rlpx"
    27  	"github.com/ethxdao/go-ethereum/rlp"
    28  )
    29  
    30  var (
    31  	rlpxCommand = &cli.Command{
    32  		Name:  "rlpx",
    33  		Usage: "RLPx Commands",
    34  		Subcommands: []*cli.Command{
    35  			rlpxPingCommand,
    36  			rlpxEthTestCommand,
    37  			rlpxSnapTestCommand,
    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  	rlpxSnapTestCommand = &cli.Command{
    56  		Name:      "snap-test",
    57  		Usage:     "Runs tests against a node",
    58  		ArgsUsage: "<node> <chain.rlp> <genesis.json>",
    59  		Action:    rlpxSnapTest,
    60  		Flags: []cli.Flag{
    61  			testPatternFlag,
    62  			testTAPFlag,
    63  		},
    64  	}
    65  )
    66  
    67  func rlpxPing(ctx *cli.Context) error {
    68  	n := getNodeArg(ctx)
    69  	fd, err := net.Dial("tcp", fmt.Sprintf("%v:%d", n.IP(), n.TCP()))
    70  	if err != nil {
    71  		return err
    72  	}
    73  	conn := rlpx.NewConn(fd, n.Pubkey())
    74  	ourKey, _ := crypto.GenerateKey()
    75  	_, err = conn.Handshake(ourKey)
    76  	if err != nil {
    77  		return err
    78  	}
    79  	code, data, _, err := conn.Read()
    80  	if err != nil {
    81  		return err
    82  	}
    83  	switch code {
    84  	case 0:
    85  		var h ethtest.Hello
    86  		if err := rlp.DecodeBytes(data, &h); err != nil {
    87  			return fmt.Errorf("invalid handshake: %v", err)
    88  		}
    89  		fmt.Printf("%+v\n", h)
    90  	case 1:
    91  		var msg []p2p.DiscReason
    92  		if rlp.DecodeBytes(data, &msg); len(msg) == 0 {
    93  			return fmt.Errorf("invalid disconnect message")
    94  		}
    95  		return fmt.Errorf("received disconnect message: %v", msg[0])
    96  	default:
    97  		return fmt.Errorf("invalid message code %d, expected handshake (code zero)", code)
    98  	}
    99  	return nil
   100  }
   101  
   102  // rlpxEthTest runs the eth protocol test suite.
   103  func rlpxEthTest(ctx *cli.Context) error {
   104  	if ctx.NArg() < 3 {
   105  		exit("missing path to chain.rlp as command-line argument")
   106  	}
   107  	suite, err := ethtest.NewSuite(getNodeArg(ctx), ctx.Args().Get(1), ctx.Args().Get(2))
   108  	if err != nil {
   109  		exit(err)
   110  	}
   111  	return runTests(ctx, suite.EthTests())
   112  }
   113  
   114  // rlpxSnapTest runs the snap protocol test suite.
   115  func rlpxSnapTest(ctx *cli.Context) error {
   116  	if ctx.NArg() < 3 {
   117  		exit("missing path to chain.rlp as command-line argument")
   118  	}
   119  	suite, err := ethtest.NewSuite(getNodeArg(ctx), ctx.Args().Get(1), ctx.Args().Get(2))
   120  	if err != nil {
   121  		exit(err)
   122  	}
   123  	return runTests(ctx, suite.SnapTests())
   124  }