Golang btcutil.DecodeAddress函數代碼示例

func main() {
	flag.Parse()

	// Connect to local btcd RPC server
	btcdHomeDir := btcutil.AppDataDir("btcd", false)
	certs, err := ioutil.ReadFile(filepath.Join(btcdHomeDir, "rpc.cert"))
	if err != nil {
		log.Fatal(err)
	}
	connCfg := &btcrpcclient.ConnConfig{
		Host:         *host,
		Endpoint:     *protocol,
		User:         *user,
		Pass:         *pass,
		Certificates: certs,
	}
	client, err := btcrpcclient.New(connCfg, nil)
	if err != nil {
		log.Fatal(err)
	}
	addr, err := btcutil.DecodeAddress("1JZJaDDC44DCKLnezDsbW43Zf8LspCKBYP", nil)
	if err != nil {
		log.Fatal(err)
	}
	log.Println(btcinterned.LookupAddress(client, addr, btcinterned.SixMonths))
}

func CheckAddress(address string) bool {
	_, err := btcutil.DecodeAddress(address, &FloParams)
	if err != nil {
		return false
	}
	return true
}

// getArgs parses command line args and asserts that a private key and an
// address are present and correctly formatted.
func getArgs() requiredArgs {
	flag.Parse()
	if *a == "" || *k == "" || *t == "" || *v == -1 {
		fmt.Println("\nThis tool generates a bitcoin transaction that moves coins from an input to an output.\n" +
			"You must provide a key, an address, a transaction id (the hash\n" +
			"of a tx) and the index into the outputs of that tx that fund your\n" +
			"address! Use http://blockchain.info/pushtx to send the raw transaction.\n")
		flag.PrintDefaults()
		fmt.Println("")
		os.Exit(0)
	}

	pkBytes, err := hex.DecodeString(*k)
	if err != nil {
		log.Fatal(err)
	}
	privKey, _ := btcec.PrivKeyFromBytes(btcec.S256(), pkBytes)

	addr, err := btcutil.DecodeAddress(*a, &btcnet.MainNetParams)
	if err != nil {
		log.Fatal(err)
	}

	txid, err := btcwire.NewShaHashFromStr(*t)

	args := requiredArgs{
		txid:      txid,
		vout:      uint32(*v),
		toAddress: addr,
		privKey:   privKey,
	}

	return args
}

// This example demonstrates creating a script which pays to a bitcoin address.
// It also prints the created script hex and uses the DisasmString function to
// display the disassembled script.
func ExamplePayToAddrScript() {
	// Parse the address to send the coins to into a btcutil.Address
	// which is useful to ensure the accuracy of the address and determine
	// the address type.  It is also required for the upcoming call to
	// PayToAddrScript.
	addressStr := "12gpXQVcCL2qhTNQgyLVdCFG2Qs2px98nV"
	address, err := btcutil.DecodeAddress(addressStr, &chaincfg.MainNetParams)
	if err != nil {
		fmt.Println(err)
		return
	}

	// Create a public key script that pays to the address.
	script, err := txscript.PayToAddrScript(address)
	if err != nil {
		fmt.Println(err)
		return
	}
	fmt.Printf("Script Hex: %x\n", script)

	disasm, err := txscript.DisasmString(script)
	if err != nil {
		fmt.Println(err)
		return
	}
	fmt.Println("Script Disassembly:", disasm)

	// Output:
	// Script Hex: 76a914128004ff2fcaf13b2b91eb654b1dc2b674f7ec6188ac
	// Script Disassembly: OP_DUP OP_HASH160 128004ff2fcaf13b2b91eb654b1dc2b674f7ec61 OP_EQUALVERIFY OP_CHECKSIG
}

// NewTransaction create transaction,
// utxos is an interface which need to be a slice type, and each item
// of the slice is an UtxoWithPrivkey interface.
// outAddrs is the output address array.
// using the api of blockchain.info to get the raw trasaction info of txid.
func NewTransaction(utxos interface{}, outAddrs []TxOut) (*Transaction, error) {
	s := reflect.ValueOf(utxos)
	if s.Kind() != reflect.Slice {
		return nil, errors.New("error utxo type")
	}

	ret := make([]interface{}, s.Len())
	for i := 0; i < s.Len(); i++ {
		ret[i] = s.Index(i).Interface()
	}

	tx := wire.NewMsgTx()
	oldTxOuts := make([]*wire.TxOut, len(ret))
	for i, r := range ret {
		utxo := r.(UtxoWithkey)
		txid, err := chainhash.NewHashFromStr(utxo.GetTxid())
		if err != nil {
			return nil, err
		}
		rawFundingTx, err := lookupTxid(txid)
		if err != nil {
			return nil, err
		}
		oldTxOut, outpoint, err := getFundingParams(rawFundingTx, utxo.GetVout())
		if err != nil {
			return nil, err
		}
		oldTxOuts[i] = oldTxOut

		txin := createTxIn(outpoint)
		tx.AddTxIn(txin)
	}

	if len(outAddrs) > 2 {
		return nil, errors.New("out address more than 2")
	}

	for _, out := range outAddrs {
		addr, err := btcutil.DecodeAddress(out.Addr, &chaincfg.MainNetParams)
		if err != nil {
			return nil, fmt.Errorf("decode address %s, faild, %s", out.Addr, err)
		}
		txout := createTxOut(out.Value, addr)
		tx.AddTxOut(txout)
	}

	// sign the transaction
	for i, r := range ret {
		utxo := r.(UtxoWithkey)
		sig, err := signRawTx(&Transaction{*tx}, i, utxo.GetPrivKey(), oldTxOuts[i].PkScript)
		if err != nil {
			return nil, err
		}
		tx.TxIn[i].SignatureScript = sig
	}
	return &Transaction{*tx}, nil
}

// newLnAddr...
func newLnAddr(encodedAddr string) (*lnAddr, error) {
	// The format of an lnaddr is "<pubkey or pkh>@host"
	idHost := strings.Split(encodedAddr, "@")
	if len(idHost) != 2 {
		return nil, fmt.Errorf("invalid format for lnaddr string: %v", encodedAddr)
	}

	// Attempt to resolve the IP address, this handles parsing IPv6 zones,
	// and such.
	fmt.Println("host: ", idHost[1])
	ipAddr, err := net.ResolveTCPAddr("tcp", idHost[1])
	if err != nil {
		return nil, err
	}

	addr := &lnAddr{netAddr: ipAddr}

	idLen := len(idHost[0])
	switch {
	// Is the ID a hex-encoded compressed public key?
	case idLen > 65 && idLen < 69:
		pubkeyBytes, err := hex.DecodeString(idHost[0])
		if err != nil {
			return nil, err
		}

		addr.pubKey, err = btcec.ParsePubKey(pubkeyBytes, btcec.S256())
		if err != nil {
			return nil, err
		}

		// got pubey, populate address from pubkey
		pkh := btcutil.Hash160(addr.pubKey.SerializeCompressed())
		addr.bitcoinAddr, err = btcutil.NewAddressPubKeyHash(pkh,
			&chaincfg.TestNet3Params)
		if err != nil {
			return nil, err
		}
	// Is the ID a string encoded bitcoin address?
	case idLen > 33 && idLen < 37:
		addr.bitcoinAddr, err = btcutil.DecodeAddress(idHost[0],
			&chaincfg.TestNet3Params)
		if err != nil {
			return nil, err
		}
	default:
		return nil, fmt.Errorf("invalid address %s", idHost[0])
	}

	// Finally, populate the lnid from the address.
	copy(addr.lnId[:], addr.bitcoinAddr.ScriptAddress())

	return addr, nil
}

// CreateRawTx create bitcoin raw transaction.
func (btc Bitcoin) CreateRawTx(txIns []coin.TxIn, txOuts interface{}) (string, error) {
	tx := wire.NewMsgTx()
	oldTxOuts := make([]*wire.TxOut, len(txIns))
	for i, in := range txIns {
		txid, err := chainhash.NewHashFromStr(in.Txid)
		// txid, err := chainhash.NewShaHashFromStr(in.Txid)
		if err != nil {
			return "", err
		}
		rawFundingTx, err := lookupTxid(txid)
		if err != nil {
			return "", err
		}
		oldTxOut, outpoint, err := getFundingParams(rawFundingTx, in.Vout)
		if err != nil {
			return "", err
		}
		oldTxOuts[i] = oldTxOut

		txin := createTxIn(outpoint)
		tx.AddTxIn(txin)
	}

	s := reflect.ValueOf(txOuts)
	if s.Kind() != reflect.Slice {
		return "", errors.New("error tx out type")
	}

	outs := make([]interface{}, s.Len())
	for i := 0; i < s.Len(); i++ {
		outs[i] = s.Index(i).Interface()
	}

	if len(outs) > 2 {
		return "", errors.New("out address more than 2")
	}

	for _, o := range outs {
		out := o.(TxOut)
		addr, err := btcutil.DecodeAddress(out.Addr, &chaincfg.MainNetParams)
		if err != nil {
			return "", err
		}
		txout := createTxOut(out.Value, addr)
		tx.AddTxOut(txout)
	}

	t := Transaction{*tx}
	d, err := t.Serialize()
	if err != nil {
		return "", err
	}
	return hex.EncodeToString(d), nil
}

func TestSignMultiSigUTXOPkScriptNotP2SH(t *testing.T) {
	tearDown, pool, _ := TstCreatePoolAndTxStore(t)
	defer tearDown()

	mgr := pool.Manager()
	tx := createWithdrawalTx(t, pool, []int64{4e6}, []int64{})
	addr, _ := btcutil.DecodeAddress("1MirQ9bwyQcGVJPwKUgapu5ouK2E2Ey4gX", mgr.ChainParams())
	pubKeyHashPkScript, _ := txscript.PayToAddrScript(addr.(*btcutil.AddressPubKeyHash))
	msgtx := tx.toMsgTx()

	err := signMultiSigUTXO(mgr, msgtx, 0, pubKeyHashPkScript, []RawSig{RawSig{}})

	TstCheckError(t, "", err, ErrTxSigning)
}

func TstNewOutputRequest(t *testing.T, transaction uint32, address string, amount btcutil.Amount,
	net *chaincfg.Params) OutputRequest {
	addr, err := btcutil.DecodeAddress(address, net)
	if err != nil {
		t.Fatalf("Unable to decode address %s", address)
	}
	pkScript, err := txscript.PayToAddrScript(addr)
	if err != nil {
		t.Fatalf("Unable to generate pkScript for %v", addr)
	}
	return OutputRequest{
		PkScript:    pkScript,
		Address:     addr,
		Amount:      amount,
		Server:      "server",
		Transaction: transaction,
	}
}

// Send sends coins.
func Send(args []string) error {
	if SCon.RBytes == 0 {
		return fmt.Errorf("Can't send, spv connection broken")
	}
	// get all utxos from the database
	allUtxos, err := SCon.TS.GetAllUtxos()
	if err != nil {
		return err
	}
	var score int64 // score is the sum of all utxo amounts.  highest score wins.
	// add all the utxos up to get the score
	for _, u := range allUtxos {
		score += u.Value
	}

	// score is 0, cannot unlock 'send coins' acheivement
	if score == 0 {
		return fmt.Errorf("You don't have money.  Work hard.")
	}
	// need args, fail
	if len(args) < 2 {
		return fmt.Errorf("need args: ssend amount(satoshis) address")
	}
	amt, err := strconv.ParseInt(args[0], 10, 64)
	if err != nil {
		return err
	}
	if amt < 1000 {
		return fmt.Errorf("can't send %d, too small", amt)
	}
	adr, err := btcutil.DecodeAddress(args[1], SCon.TS.Param)
	if err != nil {
		fmt.Printf("error parsing %s as address\t", args[1])
		return err
	}
	fmt.Printf("send %d to address: %s \n",
		amt, adr.String())
	err = SendCoins(SCon, adr, amt)
	if err != nil {
		return err
	}
	return nil
}

func TestSignMultiSigUTXORedeemScriptNotFound(t *testing.T) {
	tearDown, pool, _ := TstCreatePoolAndTxStore(t)
	defer tearDown()

	mgr := pool.Manager()
	tx := createWithdrawalTx(t, pool, []int64{4e6}, []int64{})
	// This is a P2SH address for which the addr manager doesn't have the redeem
	// script.
	addr, _ := btcutil.DecodeAddress("3Hb4xcebcKg4DiETJfwjh8sF4uDw9rqtVC", mgr.ChainParams())
	if _, err := mgr.Address(addr); err == nil {
		t.Fatalf("Address %s found in manager when it shouldn't", addr)
	}
	msgtx := tx.toMsgTx()

	pkScript, _ := txscript.PayToAddrScript(addr.(*btcutil.AddressScriptHash))
	err := signMultiSigUTXO(mgr, msgtx, 0, pkScript, []RawSig{RawSig{}})

	TstCheckError(t, "", err, ErrTxSigning)
}

// getArgs parses command line args and asserts that a private key and an
// address are present and correctly formatted.
func getArgs() requiredArgs {
	flag.Parse()
	if *toaddress == "" || *privkey == "" || *txid == "" || *vout == -1 || *amount == -1 {
		fmt.Println("\nThis program generates a bitcoin trans action that moves coins from an input to an output.\n" +
			"You must provide a key, a receiving address, a transaction id (the hash\n" +
			"of a tx), the amount to be transferred (in satoshis), and the index into\n" +
			"the outputs of that tx that fund your address. Use http://blockchain.info/pushtx\n" +
			"to send the raw transaction.\n")
		flag.PrintDefaults()
		fmt.Println("")
		os.Exit(0)
	}

	pkBytes, err := hex.DecodeString(*privkey)
	if err != nil {
		log.Fatal(err)
	}

	// PrivKeyFromBytes returns public key as a separate result, but can ignore it here.
	key, _ := btcec.PrivKeyFromBytes(btcec.S256(), pkBytes)

	addr, err := btcutil.DecodeAddress(*toaddress, &chaincfg.MainNetParams)
	if err != nil {
		log.Fatal(err)
	}

	txid, err := wire.NewShaHashFromStr(*txid)
	if err != nil {
		log.Fatal(err)
	}

	args := requiredArgs{
		txid:      txid,
		vout:      uint32(*vout),
		toAddress: addr,
		privKey:   key,
		amount:    int64(*amount),
	}

	return args
}

func sendOpReturn(addr string, totalAmount float64, msg []byte) {
	if len(msg) > MAX_BYTES {
		logger.Crit("message oversize")
		os.Exit(0)
	}
	btcAddr, err := btcutil.DecodeAddress(addr, &chaincfg.MainNetParams)
	if err != nil {
		logger.Crit("can't decode address")
		os.Exit(0)
	}
	logger.Info("finding avaible inputs")
	inputs, err := selectInputs(totalAmount + FEE)
	if err != nil {
		logger.Crit(err.Error())
		return
	}
	change := inputs.total - totalAmount - FEE
	rawtx := createTx(inputs, btcAddr, totalAmount, change, msg)

	if sendTx {
		signedTx, complete, err := client.SignRawTransaction(rawtx)
		if err != nil || !complete {
			logger.Crit(fmt.Sprintf("could not sign the tx: %s", err.Error()))
			os.Exit(0)
		} else {
			var rawtx bytes.Buffer
			signedTx.Serialize(&rawtx)
			decodedTx, _ := client.DecodeRawTransaction(rawtx.Bytes())
			logger.Info(spew.Sdump(decodedTx))

			askForConfirmation("Are you going to send the tx? ")
			txHash, err := client.SendRawTransaction(signedTx, false)
			if err != nil {
				logger.Crit("could not send the tx")
				os.Exit(0)
			} else {
				logger.Info(fmt.Sprintf("tx sent: %s", txHash.String()))
			}
		}
	}
}

// addOutputs adds the given address/amount pairs as outputs to msgtx,
// returning their total amount.
func addOutputs(msgtx *wire.MsgTx, pairs map[string]btcutil.Amount, chainParams *chaincfg.Params) (btcutil.Amount, error) {
	var minAmount btcutil.Amount
	for addrStr, amt := range pairs {
		if amt <= 0 {
			return minAmount, ErrNonPositiveAmount
		}
		minAmount += amt
		addr, err := btcutil.DecodeAddress(addrStr, chainParams)
		if err != nil {
			return minAmount, fmt.Errorf("cannot decode address: %s", err)
		}

		// Add output to spend amt to addr.
		pkScript, err := txscript.PayToAddrScript(addr)
		if err != nil {
			return minAmount, fmt.Errorf("cannot create txout script: %s", err)
		}
		txout := wire.NewTxOut(int64(amt), pkScript)
		msgtx.AddTxOut(txout)
	}
	return minAmount, nil
}

//.........這裏部分代碼省略.........
			"options may  not be activated at the same time",
			funcName)
		fmt.Fprintln(os.Stderr, err)
		fmt.Fprintln(os.Stderr, usageMessage)
		return nil, nil, err
	}

	// --addrindex and --dropaddrindex do not mix.
	if cfg.AddrIndex && cfg.DropAddrIndex {
		err := fmt.Errorf("%s: the --addrindex and --dropaddrindex "+
			"options may not be activated at the same time",
			funcName)
		fmt.Fprintln(os.Stderr, err)
		fmt.Fprintln(os.Stderr, usageMessage)
		return nil, nil, err
	}

	// --addrindex and --droptxindex do not mix.
	if cfg.AddrIndex && cfg.DropTxIndex {
		err := fmt.Errorf("%s: the --addrindex and --droptxindex "+
			"options may not be activated at the same time "+
			"because the address index relies on the transaction "+
			"index",
			funcName)
		fmt.Fprintln(os.Stderr, err)
		fmt.Fprintln(os.Stderr, usageMessage)
		return nil, nil, err
	}

	// Check getwork keys are valid and saved parsed versions.
	cfg.miningAddrs = make([]btcutil.Address, 0, len(cfg.GetWorkKeys)+
		len(cfg.MiningAddrs))
	for _, strAddr := range cfg.GetWorkKeys {
		addr, err := btcutil.DecodeAddress(strAddr,
			activeNetParams.Params)
		if err != nil {
			str := "%s: getworkkey '%s' failed to decode: %v"
			err := fmt.Errorf(str, funcName, strAddr, err)
			fmt.Fprintln(os.Stderr, err)
			fmt.Fprintln(os.Stderr, usageMessage)
			return nil, nil, err
		}
		if !addr.IsForNet(activeNetParams.Params) {
			str := "%s: getworkkey '%s' is on the wrong network"
			err := fmt.Errorf(str, funcName, strAddr)
			fmt.Fprintln(os.Stderr, err)
			fmt.Fprintln(os.Stderr, usageMessage)
			return nil, nil, err
		}
		cfg.miningAddrs = append(cfg.miningAddrs, addr)
	}

	// Check mining addresses are valid and saved parsed versions.
	for _, strAddr := range cfg.MiningAddrs {
		addr, err := btcutil.DecodeAddress(strAddr, activeNetParams.Params)
		if err != nil {
			str := "%s: mining address '%s' failed to decode: %v"
			err := fmt.Errorf(str, funcName, strAddr, err)
			fmt.Fprintln(os.Stderr, err)
			fmt.Fprintln(os.Stderr, usageMessage)
			return nil, nil, err
		}
		if !addr.IsForNet(activeNetParams.Params) {
			str := "%s: mining address '%s' is on the wrong network"
			err := fmt.Errorf(str, funcName, strAddr)
			fmt.Fprintln(os.Stderr, err)