github.com/cryptotooltop/go-ethereum@v0.0.0-20231103184714-151d1922f3e5/cmd/devp2p/main.go (about)

     1  // Copyright 2019 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  	"os"
    22  	"path/filepath"
    23  	"sort"
    24  
    25  	"gopkg.in/urfave/cli.v1"
    26  
    27  	"github.com/scroll-tech/go-ethereum/internal/debug"
    28  	"github.com/scroll-tech/go-ethereum/p2p/enode"
    29  	"github.com/scroll-tech/go-ethereum/params"
    30  )
    31  
    32  var (
    33  	// Git information set by linker when building with ci.go.
    34  	gitCommit string
    35  	gitDate   string
    36  	app       = &cli.App{
    37  		Name:        filepath.Base(os.Args[0]),
    38  		Usage:       "go-ethereum devp2p tool",
    39  		Version:     params.VersionWithCommit(gitCommit, gitDate),
    40  		Writer:      os.Stdout,
    41  		HideVersion: true,
    42  	}
    43  )
    44  
    45  func init() {
    46  	// Set up the CLI app.
    47  	app.Flags = append(app.Flags, debug.Flags...)
    48  	app.Before = func(ctx *cli.Context) error {
    49  		return debug.Setup(ctx)
    50  	}
    51  	app.After = func(ctx *cli.Context) error {
    52  		debug.Exit()
    53  		return nil
    54  	}
    55  	app.CommandNotFound = func(ctx *cli.Context, cmd string) {
    56  		fmt.Fprintf(os.Stderr, "No such command: %s\n", cmd)
    57  		os.Exit(1)
    58  	}
    59  	// Add subcommands.
    60  	app.Commands = []cli.Command{
    61  		enrdumpCommand,
    62  		keyCommand,
    63  		discv4Command,
    64  		discv5Command,
    65  		dnsCommand,
    66  		nodesetCommand,
    67  		rlpxCommand,
    68  	}
    69  }
    70  
    71  func main() {
    72  	exit(app.Run(os.Args))
    73  }
    74  
    75  // commandHasFlag returns true if the current command supports the given flag.
    76  func commandHasFlag(ctx *cli.Context, flag cli.Flag) bool {
    77  	flags := ctx.FlagNames()
    78  	sort.Strings(flags)
    79  	i := sort.SearchStrings(flags, flag.GetName())
    80  	return i != len(flags) && flags[i] == flag.GetName()
    81  }
    82  
    83  // getNodeArg handles the common case of a single node descriptor argument.
    84  func getNodeArg(ctx *cli.Context) *enode.Node {
    85  	if ctx.NArg() < 1 {
    86  		exit("missing node as command-line argument")
    87  	}
    88  	n, err := parseNode(ctx.Args()[0])
    89  	if err != nil {
    90  		exit(err)
    91  	}
    92  	return n
    93  }
    94  
    95  func exit(err interface{}) {
    96  	if err == nil {
    97  		os.Exit(0)
    98  	}
    99  	fmt.Fprintln(os.Stderr, err)
   100  	os.Exit(1)
   101  }