op-geth/cmd/abidump/main.go

75 lines
2.0 KiB
Go

// Copyright 2019 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package main
import (
"encoding/hex"
"flag"
"fmt"
"os"
"strings"
"github.com/ethereum/go-ethereum/signer/core"
"github.com/ethereum/go-ethereum/signer/fourbyte"
)
func init() {
flag.Usage = func() {
fmt.Fprintln(os.Stderr, "Usage:", os.Args[0], "<hexdata>")
flag.PrintDefaults()
fmt.Fprintln(os.Stderr, `
Parses the given ABI data and tries to interpret it from the fourbyte database.`)
}
}
func parse(data []byte) {
db, err := fourbyte.New()
if err != nil {
die(err)
}
messages := core.ValidationMessages{}
db.ValidateCallData(nil, data, &messages)
for _, m := range messages.Messages {
fmt.Printf("%v: %v\n", m.Typ, m.Message)
}
}
// Example
// ./abidump a9059cbb000000000000000000000000ea0e2dc7d65a50e77fc7e84bff3fd2a9e781ff5c0000000000000000000000000000000000000000000000015af1d78b58c40000
func main() {
flag.Parse()
switch {
case flag.NArg() == 1:
hexdata := flag.Arg(0)
data, err := hex.DecodeString(strings.TrimPrefix(hexdata, "0x"))
if err != nil {
die(err)
}
parse(data)
default:
fmt.Fprintln(os.Stderr, "Error: one argument needed")
flag.Usage()
os.Exit(2)
}
}
func die(args ...interface{}) {
fmt.Fprintln(os.Stderr, args...)
os.Exit(1)
}