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- // Copyright 2020 The go-ethereum Authors
- // This file is part of go-ethereum.
- //
- // 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 utils contains internal helper functions for go-ethereum commands.
- package utils
- import (
- "fmt"
- "github.com/ethereum/go-ethereum/console/prompt"
- )
- // GetPassPhrase displays the given text(prompt) to the user and requests some textual
- // data to be entered, but one which must not be echoed out into the terminal.
- // The method returns the input provided by the user.
- func GetPassPhrase(text string, confirmation bool) string {
- if text != "" {
- fmt.Println(text)
- }
- password, err := prompt.Stdin.PromptPassword("Password: ")
- if err != nil {
- Fatalf("Failed to read password: %v", err)
- }
- if confirmation {
- confirm, err := prompt.Stdin.PromptPassword("Repeat password: ")
- if err != nil {
- Fatalf("Failed to read password confirmation: %v", err)
- }
- if password != confirm {
- Fatalf("Passwords do not match")
- }
- }
- return password
- }
- // GetPassPhraseWithList retrieves the password associated with an account, either fetched
- // from a list of preloaded passphrases, or requested interactively from the user.
- func GetPassPhraseWithList(text string, confirmation bool, index int, passwords []string) string {
- // If a list of passwords was supplied, retrieve from them
- if len(passwords) > 0 {
- if index < len(passwords) {
- return passwords[index]
- }
- return passwords[len(passwords)-1]
- }
- // Otherwise prompt the user for the password
- password := GetPassPhrase(text, confirmation)
- return password
- }
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