// getRedeemScript returns the redeem script for the given P2SH address. It must
// be called with the manager unlocked.
func getRedeemScript(mgr *waddrmgr.Manager, addr *btcutil.AddressScriptHash) ([]byte, error) {
address, err := mgr.Address(addr)
if err != nil {
return nil, err
}
return address.(waddrmgr.ManagedScriptAddress).Script()
}
// TstRunWithManagerUnlocked calls the given callback with the manager unlocked,
// and locks it again before returning.
func TstRunWithManagerUnlocked(t *testing.T, mgr *waddrmgr.Manager, callback func()) {
if err := mgr.Unlock(privPassphrase); err != nil {
t.Fatal(err)
}
defer mgr.Lock()
callback()
}
// 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
}
func encryptKeys(keys []string, mgr *waddrmgr.Manager, keyType waddrmgr.CryptoKeyType) ([][]byte, error) {
encryptedKeys := make([][]byte, len(keys))
var err error
for i, key := range keys {
if key == "" {
encryptedKeys[i] = nil
} else {
encryptedKeys[i], err = mgr.Encrypt(keyType, []byte(key))
}
if err != nil {
return nil, err
}
}
return encryptedKeys, nil
}
// signMultiSigUTXO signs the P2SH UTXO with the given index by constructing a
// script containing all given signatures plus the redeem (multi-sig) script. The
// redeem script is obtained by looking up the address of the given P2SH pkScript
// on the address manager.
// The order of the signatures must match that of the public keys in the multi-sig
// script as OP_CHECKMULTISIG expects that.
// This function must be called with the manager unlocked.
func signMultiSigUTXO(mgr *waddrmgr.Manager, tx *wire.MsgTx, idx int, pkScript []byte, sigs []RawSig) error {
class, addresses, _, err := txscript.ExtractPkScriptAddrs(pkScript, mgr.ChainParams())
if err != nil {
return newError(ErrTxSigning, "unparseable pkScript", err)
}
if class != txscript.ScriptHashTy {
return newError(ErrTxSigning, fmt.Sprintf("pkScript is not P2SH: %s", class), nil)
}
redeemScript, err := getRedeemScript(mgr, addresses[0].(*btcutil.AddressScriptHash))
if err != nil {
return newError(ErrTxSigning, "unable to retrieve redeem script", err)
}
class, _, nRequired, err := txscript.ExtractPkScriptAddrs(redeemScript, mgr.ChainParams())
if err != nil {
return newError(ErrTxSigning, "unparseable redeem script", err)
}
if class != txscript.MultiSigTy {
return newError(ErrTxSigning, fmt.Sprintf("redeem script is not multi-sig: %v", class), nil)
}
if len(sigs) < nRequired {
errStr := fmt.Sprintf("not enough signatures; need %d but got only %d", nRequired,
len(sigs))
return newError(ErrTxSigning, errStr, nil)
}
// Construct the unlocking script.
// Start with an OP_0 because of the bug in bitcoind, then add nRequired signatures.
unlockingScript := txscript.NewScriptBuilder().AddOp(txscript.OP_FALSE)
for _, sig := range sigs[:nRequired] {
unlockingScript.AddData(sig)
}
// Combine the redeem script and the unlocking script to get the actual signature script.
sigScript := unlockingScript.AddData(redeemScript)
script, err := sigScript.Script()
if err != nil {
return newError(ErrTxSigning, "error building sigscript", err)
}
tx.TxIn[idx].SignatureScript = script
if err := validateSigScript(tx, idx, pkScript); err != nil {
return err
}
return nil
}