mirror of https://github.com/ethereum/go-ethereum
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
83 lines
2.7 KiB
83 lines
2.7 KiB
// Copyright 2017 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 (
|
|
"encoding/json"
|
|
"fmt"
|
|
"io/ioutil"
|
|
"strings"
|
|
|
|
"github.com/ethereum/go-ethereum/cmd/utils"
|
|
"github.com/ethereum/go-ethereum/console"
|
|
"github.com/ethereum/go-ethereum/crypto"
|
|
"gopkg.in/urfave/cli.v1"
|
|
)
|
|
|
|
// getPassPhrase obtains a passphrase given by the user. It first checks the
|
|
// --passphrase command line flag and ultimately prompts the user for a
|
|
// passphrase.
|
|
func getPassPhrase(ctx *cli.Context, confirmation bool) string {
|
|
// Look for the --passphrase flag.
|
|
passphraseFile := ctx.String(passphraseFlag.Name)
|
|
if passphraseFile != "" {
|
|
content, err := ioutil.ReadFile(passphraseFile)
|
|
if err != nil {
|
|
utils.Fatalf("Failed to read passphrase file '%s': %v",
|
|
passphraseFile, err)
|
|
}
|
|
return strings.TrimRight(string(content), "\r\n")
|
|
}
|
|
|
|
// Otherwise prompt the user for the passphrase.
|
|
passphrase, err := console.Stdin.PromptPassword("Passphrase: ")
|
|
if err != nil {
|
|
utils.Fatalf("Failed to read passphrase: %v", err)
|
|
}
|
|
if confirmation {
|
|
confirm, err := console.Stdin.PromptPassword("Repeat passphrase: ")
|
|
if err != nil {
|
|
utils.Fatalf("Failed to read passphrase confirmation: %v", err)
|
|
}
|
|
if passphrase != confirm {
|
|
utils.Fatalf("Passphrases do not match")
|
|
}
|
|
}
|
|
return passphrase
|
|
}
|
|
|
|
// signHash is a helper function that calculates a hash for the given message
|
|
// that can be safely used to calculate a signature from.
|
|
//
|
|
// The hash is calulcated as
|
|
// keccak256("\x19Ethereum Signed Message:\n"${message length}${message}).
|
|
//
|
|
// This gives context to the signed message and prevents signing of transactions.
|
|
func signHash(data []byte) []byte {
|
|
msg := fmt.Sprintf("\x19Ethereum Signed Message:\n%d%s", len(data), data)
|
|
return crypto.Keccak256([]byte(msg))
|
|
}
|
|
|
|
// mustPrintJSON prints the JSON encoding of the given object and
|
|
// exits the program with an error message when the marshaling fails.
|
|
func mustPrintJSON(jsonObject interface{}) {
|
|
str, err := json.MarshalIndent(jsonObject, "", " ")
|
|
if err != nil {
|
|
utils.Fatalf("Failed to marshal JSON object: %v", err)
|
|
}
|
|
fmt.Println(string(str))
|
|
}
|
|
|