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// Copyright 2019 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 (
"fmt"
"os"
"path/filepath"
"github.com/ethereum/go-ethereum/internal/debug"
"github.com/ethereum/go-ethereum/internal/flags"
"github.com/ethereum/go-ethereum/p2p/enode"
"github.com/ethereum/go-ethereum/params"
"github.com/urfave/cli/v2"
)
var (
// Git information set by linker when building with ci.go.
gitCommit string
gitDate string
app = &cli.App{
Name: filepath.Base(os.Args[0]),
Usage: "go-ethereum devp2p tool",
Version: params.VersionWithCommit(gitCommit, gitDate),
Writer: os.Stdout,
HideVersion: true,
}
)
func init() {
// Set up the CLI app.
app.Flags = append(app.Flags, debug.Flags...)
app.Before = func(ctx *cli.Context) error {
flags.MigrateGlobalFlags(ctx)
return debug.Setup(ctx)
}
app.After = func(ctx *cli.Context) error {
debug.Exit()
return nil
}
app.CommandNotFound = func(ctx *cli.Context, cmd string) {
fmt.Fprintf(os.Stderr, "No such command: %s\n", cmd)
os.Exit(1)
}
// Add subcommands.
app.Commands = []*cli.Command{
enrdumpCommand,
keyCommand,
discv4Command,
discv5Command,
dnsCommand,
nodesetCommand,
rlpxCommand,
}
}
func main() {
exit(app.Run(os.Args))
}
// commandHasFlag returns true if the current command supports the given flag.
func commandHasFlag(ctx *cli.Context, flag cli.Flag) bool {
names := flag.Names()
set := make(map[string]struct{}, len(names))
for _, name := range names {
set[name] = struct{}{}
}
for _, fn := range ctx.FlagNames() {
if _, ok := set[fn]; ok {
return true
}
}
return false
}
// getNodeArg handles the common case of a single node descriptor argument.
func getNodeArg(ctx *cli.Context) *enode.Node {
if ctx.NArg() < 1 {
exit("missing node as command-line argument")
}
n, err := parseNode(ctx.Args().First())
if err != nil {
exit(err)
}
return n
}
func exit(err interface{}) {
if err == nil {
os.Exit(0)
}
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}