// PrivatePass prompts the user for a private passphrase with varying behavior
// depending on whether the passed legacy keystore exists. When it does, the
// user is prompted for the existing passphrase which is then used to unlock it.
// On the other hand, when the legacy keystore is nil, the user is prompted for
// a new private passphrase. All prompts are repeated until the user enters a
// valid response.
func PrivatePass(reader *bufio.Reader, legacyKeyStore *keystore.Store) ([]byte, error) {
// When there is not an existing legacy wallet, simply prompt the user
// for a new private passphase and return it.
if legacyKeyStore == nil {
return promptPass(reader, "Enter the private "+
"passphrase for your new wallet", true)
}
// At this point, there is an existing legacy wallet, so prompt the user
// for the existing private passphrase and ensure it properly unlocks
// the legacy wallet so all of the addresses can later be imported.
fmt.Println("You have an existing legacy wallet. All addresses from " +
"your existing legacy wallet will be imported into the new " +
"wallet format.")
for {
privPass, err := promptPass(reader, "Enter the private "+
"passphrase for your existing wallet", false)
if err != nil {
return nil, err
}
// Keep prompting the user until the passphrase is correct.
if err := legacyKeyStore.Unlock([]byte(privPass)); err != nil {
if err == keystore.ErrWrongPassphrase {
fmt.Println(err)
continue
}
return nil, err
}
return privPass, nil
}
}
// convertLegacyKeystore converts all of the addresses in the passed legacy
// key store to the new waddrmgr.Manager format. Both the legacy keystore and
// the new manager must be unlocked.
func convertLegacyKeystore(legacyKeyStore *keystore.Store, manager *waddrmgr.Manager) error {
netParams := legacyKeyStore.Net()
blockStamp := waddrmgr.BlockStamp{
Height: 0,
Hash: *netParams.GenesisHash,
}
for _, walletAddr := range legacyKeyStore.ActiveAddresses() {
switch addr := walletAddr.(type) {
case keystore.PubKeyAddress:
privKey, err := addr.PrivKey()
if err != nil {
fmt.Printf("WARN: Failed to obtain private key "+
"for address %v: %v\n", addr.Address(),
err)
continue
}
wif, err := btcutil.NewWIF((*btcec.PrivateKey)(privKey),
netParams, addr.Compressed())
if err != nil {
fmt.Printf("WARN: Failed to create wallet "+
"import format for address %v: %v\n",
addr.Address(), err)
continue
}
_, err = manager.ImportPrivateKey(wif, &blockStamp)
if err != nil {
fmt.Printf("WARN: Failed to import private "+
"key for address %v: %v\n",
addr.Address(), err)
continue
}
case keystore.ScriptAddress:
_, err := manager.ImportScript(addr.Script(), &blockStamp)
if err != nil {
fmt.Printf("WARN: Failed to import "+
"pay-to-script-hash script for "+
"address %v: %v\n", addr.Address(), err)
continue
}
default:
fmt.Printf("WARN: Skipping unrecognized legacy "+
"keystore type: %T\n", addr)
continue
}
}
return nil
}
// createWallet prompts the user for information needed to generate a new wallet
// and generates the wallet accordingly. The new wallet will reside at the
// provided path.
func createWallet(cfg *config) error {
dbDir := networkDir(cfg.AppDataDir, activeNet.Params)
loader := wallet.NewLoader(activeNet.Params, dbDir)
// When there is a legacy keystore, open it now to ensure any errors
// don't end up exiting the process after the user has spent time
// entering a bunch of information.
netDir := networkDir(cfg.AppDataDir, activeNet.Params)
keystorePath := filepath.Join(netDir, keystore.Filename)
var legacyKeyStore *keystore.Store
_, err := os.Stat(keystorePath)
if err != nil && !os.IsNotExist(err) {
// A stat error not due to a non-existant file should be
// returned to the caller.
return err
} else if err == nil {
// Keystore file exists.
legacyKeyStore, err = keystore.OpenDir(netDir)
if err != nil {
return err
}
}
// Start by prompting for the private passphrase. When there is an
// existing keystore, the user will be promped for that passphrase,
// otherwise they will be prompted for a new one.
reader := bufio.NewReader(os.Stdin)
privPass, err := prompt.PrivatePass(reader, legacyKeyStore)
if err != nil {
return err
}
// When there exists a legacy keystore, unlock it now and set up a
// callback to import all keystore keys into the new walletdb
// wallet
if legacyKeyStore != nil {
err = legacyKeyStore.Unlock(privPass)
if err != nil {
return err
}
// Import the addresses in the legacy keystore to the new wallet if
// any exist, locking each wallet again when finished.
loader.RunAfterLoad(func(w *wallet.Wallet) {
defer legacyKeyStore.Lock()
fmt.Println("Importing addresses from existing wallet...")
err := w.Manager.Unlock(privPass)
if err != nil {
fmt.Printf("ERR: Failed to unlock new wallet "+
"during old wallet key import: %v", err)
return
}
defer w.Manager.Lock()
err = convertLegacyKeystore(legacyKeyStore, w.Manager)
if err != nil {
fmt.Printf("ERR: Failed to import keys from old "+
"wallet format: %v", err)
return
}
// Remove the legacy key store.
err = os.Remove(keystorePath)
if err != nil {
fmt.Printf("WARN: Failed to remove legacy wallet "+
"from'%s'\n", keystorePath)
}
})
}
// Ascertain the public passphrase. This will either be a value
// specified by the user or the default hard-coded public passphrase if
// the user does not want the additional public data encryption.
pubPass, err := prompt.PublicPass(reader, privPass,
[]byte(wallet.InsecurePubPassphrase), []byte(cfg.WalletPass))
if err != nil {
return err
}
// Ascertain the wallet generation seed. This will either be an
// automatically generated value the user has already confirmed or a
// value the user has entered which has already been validated.
seed, err := prompt.Seed(reader)
if err != nil {
return err
}
fmt.Println("Creating the wallet...")
w, err := loader.CreateNewWallet(pubPass, privPass, seed)
if err != nil {
return err
}
w.Manager.Close()
fmt.Println("The wallet has been created successfully.")
return nil
}