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author | Péter Szilágyi <peterke@gmail.com> | 2016-04-12 22:51:09 +0800 |
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committer | Péter Szilágyi <peterke@gmail.com> | 2016-04-12 22:51:09 +0800 |
commit | 1e9b504ee7c7ebfd4b2658c66fad53fe6d440811 (patch) | |
tree | 66d229bcfb3381fe0964faf573fc6cf6b0073c75 /cmd/geth/accountcmd.go | |
parent | 33e4f51749cdfcb9125159aae8481a8130e50062 (diff) | |
parent | 6498df7b0290139df57629568d824dfa242900cc (diff) | |
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Merge pull request #2284 from fjl/accounts-addr-cache
accounts: cache key addresses
Diffstat (limited to 'cmd/geth/accountcmd.go')
-rw-r--r-- | cmd/geth/accountcmd.go | 323 |
1 files changed, 323 insertions, 0 deletions
diff --git a/cmd/geth/accountcmd.go b/cmd/geth/accountcmd.go new file mode 100644 index 000000000..bf754c72f --- /dev/null +++ b/cmd/geth/accountcmd.go @@ -0,0 +1,323 @@ +// Copyright 2016 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" + "io/ioutil" + + "github.com/codegangsta/cli" + "github.com/ethereum/go-ethereum/accounts" + "github.com/ethereum/go-ethereum/cmd/utils" + "github.com/ethereum/go-ethereum/crypto" + "github.com/ethereum/go-ethereum/logger" + "github.com/ethereum/go-ethereum/logger/glog" +) + +var ( + walletCommand = cli.Command{ + Name: "wallet", + Usage: "ethereum presale wallet", + Subcommands: []cli.Command{ + { + Action: importWallet, + Name: "import", + Usage: "import ethereum presale wallet", + }, + }, + Description: ` + + get wallet import /path/to/my/presale.wallet + +will prompt for your password and imports your ether presale account. +It can be used non-interactively with the --password option taking a +passwordfile as argument containing the wallet password in plaintext. + +`} + accountCommand = cli.Command{ + Action: accountList, + Name: "account", + Usage: "manage accounts", + Description: ` + +Manage accounts lets you create new accounts, list all existing accounts, +import a private key into a new account. + +' help' shows a list of subcommands or help for one subcommand. + +It supports interactive mode, when you are prompted for password as well as +non-interactive mode where passwords are supplied via a given password file. +Non-interactive mode is only meant for scripted use on test networks or known +safe environments. + +Make sure you remember the password you gave when creating a new account (with +either new or import). Without it you are not able to unlock your account. + +Note that exporting your key in unencrypted format is NOT supported. + +Keys are stored under <DATADIR>/keys. +It is safe to transfer the entire directory or the individual keys therein +between ethereum nodes by simply copying. +Make sure you backup your keys regularly. + +In order to use your account to send transactions, you need to unlock them using +the '--unlock' option. The argument is a space separated list of addresses or +indexes. If used non-interactively with a passwordfile, the file should contain +the respective passwords one per line. If you unlock n accounts and the password +file contains less than n entries, then the last password is meant to apply to +all remaining accounts. + +And finally. DO NOT FORGET YOUR PASSWORD. +`, + Subcommands: []cli.Command{ + { + Action: accountList, + Name: "list", + Usage: "print account addresses", + }, + { + Action: accountCreate, + Name: "new", + Usage: "create a new account", + Description: ` + + ethereum account new + +Creates a new account. Prints the address. + +The account is saved in encrypted format, you are prompted for a passphrase. + +You must remember this passphrase to unlock your account in the future. + +For non-interactive use the passphrase can be specified with the --password flag: + + ethereum --password <passwordfile> account new + +Note, this is meant to be used for testing only, it is a bad idea to save your +password to file or expose in any other way. + `, + }, + { + Action: accountUpdate, + Name: "update", + Usage: "update an existing account", + Description: ` + + ethereum account update <address> + +Update an existing account. + +The account is saved in the newest version in encrypted format, you are prompted +for a passphrase to unlock the account and another to save the updated file. + +This same command can therefore be used to migrate an account of a deprecated +format to the newest format or change the password for an account. + +For non-interactive use the passphrase can be specified with the --password flag: + + ethereum --password <passwordfile> account update <address> + +Since only one password can be given, only format update can be performed, +changing your password is only possible interactively. + `, + }, + { + Action: accountImport, + Name: "import", + Usage: "import a private key into a new account", + Description: ` + + ethereum account import <keyfile> + +Imports an unencrypted private key from <keyfile> and creates a new account. +Prints the address. + +The keyfile is assumed to contain an unencrypted private key in hexadecimal format. + +The account is saved in encrypted format, you are prompted for a passphrase. + +You must remember this passphrase to unlock your account in the future. + +For non-interactive use the passphrase can be specified with the -password flag: + + ethereum --password <passwordfile> account import <keyfile> + +Note: +As you can directly copy your encrypted accounts to another ethereum instance, +this import mechanism is not needed when you transfer an account between +nodes. + `, + }, + }, + } +) + +func accountList(ctx *cli.Context) { + accman := utils.MakeAccountManager(ctx) + for i, acct := range accman.Accounts() { + fmt.Printf("Account #%d: {%x} %s\n", i, acct.Address, acct.File) + } +} + +// tries unlocking the specified account a few times. +func unlockAccount(ctx *cli.Context, accman *accounts.Manager, address string, i int, passwords []string) (accounts.Account, string) { + account, err := utils.MakeAddress(accman, address) + if err != nil { + utils.Fatalf("Could not list accounts: %v", err) + } + for trials := 0; trials < 3; trials++ { + prompt := fmt.Sprintf("Unlocking account %s | Attempt %d/%d", address, trials+1, 3) + password := getPassPhrase(prompt, false, i, passwords) + err = accman.Unlock(account, password) + if err == nil { + glog.V(logger.Info).Infof("Unlocked account %x", account.Address) + return account, password + } + if err, ok := err.(*accounts.AmbiguousAddrError); ok { + glog.V(logger.Info).Infof("Unlocked account %x", account.Address) + return ambiguousAddrRecovery(accman, err, password), password + } + if err != accounts.ErrDecrypt { + // No need to prompt again if the error is not decryption-related. + break + } + } + // All trials expended to unlock account, bail out + utils.Fatalf("Failed to unlock account %s (%v)", address, err) + return accounts.Account{}, "" +} + +// getPassPhrase retrieves the passwor associated with an account, either fetched +// from a list of preloaded passphrases, or requested interactively from the user. +func getPassPhrase(prompt string, confirmation bool, i int, passwords []string) string { + // If a list of passwords was supplied, retrieve from them + if len(passwords) > 0 { + if i < len(passwords) { + return passwords[i] + } + return passwords[len(passwords)-1] + } + // Otherwise prompt the user for the password + if prompt != "" { + fmt.Println(prompt) + } + password, err := utils.Stdin.PasswordPrompt("Passphrase: ") + if err != nil { + utils.Fatalf("Failed to read passphrase: %v", err) + } + if confirmation { + confirm, err := utils.Stdin.PasswordPrompt("Repeat passphrase: ") + if err != nil { + utils.Fatalf("Failed to read passphrase confirmation: %v", err) + } + if password != confirm { + utils.Fatalf("Passphrases do not match") + } + } + return password +} + +func ambiguousAddrRecovery(am *accounts.Manager, err *accounts.AmbiguousAddrError, auth string) accounts.Account { + fmt.Printf("Multiple key files exist for address %x:\n", err.Addr) + for _, a := range err.Matches { + fmt.Println(" ", a.File) + } + fmt.Println("Testing your passphrase against all of them...") + var match *accounts.Account + for _, a := range err.Matches { + if err := am.Unlock(a, auth); err == nil { + match = &a + break + } + } + if match == nil { + utils.Fatalf("None of the listed files could be unlocked.") + } + fmt.Printf("Your passphrase unlocked %s\n", match.File) + fmt.Println("In order to avoid this warning, you need to remove the following duplicate key files:") + for _, a := range err.Matches { + if a != *match { + fmt.Println(" ", a.File) + } + } + return *match +} + +// accountCreate creates a new account into the keystore defined by the CLI flags. +func accountCreate(ctx *cli.Context) { + accman := utils.MakeAccountManager(ctx) + password := getPassPhrase("Your new account is locked with a password. Please give a password. Do not forget this password.", true, 0, utils.MakePasswordList(ctx)) + + account, err := accman.NewAccount(password) + if err != nil { + utils.Fatalf("Failed to create account: %v", err) + } + fmt.Printf("Address: {%x}\n", account.Address) +} + +// accountUpdate transitions an account from a previous format to the current +// one, also providing the possibility to change the pass-phrase. +func accountUpdate(ctx *cli.Context) { + if len(ctx.Args()) == 0 { + utils.Fatalf("No accounts specified to update") + } + accman := utils.MakeAccountManager(ctx) + + account, oldPassword := unlockAccount(ctx, accman, ctx.Args().First(), 0, nil) + newPassword := getPassPhrase("Please give a new password. Do not forget this password.", true, 0, nil) + if err := accman.Update(account, oldPassword, newPassword); err != nil { + utils.Fatalf("Could not update the account: %v", err) + } +} + +func importWallet(ctx *cli.Context) { + keyfile := ctx.Args().First() + if len(keyfile) == 0 { + utils.Fatalf("keyfile must be given as argument") + } + keyJson, err := ioutil.ReadFile(keyfile) + if err != nil { + utils.Fatalf("Could not read wallet file: %v", err) + } + + accman := utils.MakeAccountManager(ctx) + passphrase := getPassPhrase("", false, 0, utils.MakePasswordList(ctx)) + + acct, err := accman.ImportPreSaleKey(keyJson, passphrase) + if err != nil { + utils.Fatalf("%v", err) + } + fmt.Printf("Address: {%x}\n", acct.Address) +} + +func accountImport(ctx *cli.Context) { + keyfile := ctx.Args().First() + if len(keyfile) == 0 { + utils.Fatalf("keyfile must be given as argument") + } + key, err := crypto.LoadECDSA(keyfile) + if err != nil { + utils.Fatalf("keyfile must be given as argument") + } + accman := utils.MakeAccountManager(ctx) + passphrase := getPassPhrase("Your new account is locked with a password. Please give a password. Do not forget this password.", true, 0, utils.MakePasswordList(ctx)) + acct, err := accman.ImportECDSA(key, passphrase) + if err != nil { + utils.Fatalf("Could not create the account: %v", err) + } + fmt.Printf("Address: {%x}\n", acct.Address) +} |