Example #1
0
File: stuff.go Project: wchh/gocoin
// return the change addrress or nil if there will be no change
func get_change_addr() (chng *btc.BtcAddr) {
	if *change != "" {
		var e error
		chng, e = btc.NewAddrFromString(*change)
		if e != nil {
			println("Change address:", e.Error())
			cleanExit(1)
		}
		assert_address_version(chng)
		return
	}

	// If change address not specified, send it back to the first input
	for idx := range unspentOuts {
		if unspentOuts[idx].stealth {
			continue // cannot send change to a stelath address since we don't know the scankey
		}
		uo := getUO(&unspentOuts[idx].TxPrevOut)
		if k := pkscr_to_key(uo.Pk_script); k != nil {
			chng = k.BtcAddr
			return
		}
	}

	fmt.Println("ERROR: Could not determine address where to send change. Add -change switch")
	cleanExit(1)
	return
}
Example #2
0
File: send.go Project: wchh/gocoin
// parse the "-send ..." parameter
func parse_spend() {
	outs := strings.Split(*send, ",")

	for i := range outs {
		tmp := strings.Split(strings.Trim(outs[i], " "), "=")
		if len(tmp) != 2 {
			println("The outputs must be in a format address1=amount1[,addressN=amountN]")
			cleanExit(1)
		}

		a, e := btc.NewAddrFromString(tmp[0])
		if e != nil {
			println("NewAddrFromString:", e.Error())
			cleanExit(1)
		}
		assert_address_version(a)

		am, er := btc.StringToSatoshis(tmp[1])
		if er != nil {
			println("Incorrect amount: ", tmp[1], er.Error())
			cleanExit(1)
		}
		if *subfee {
			am -= curFee
		}

		sendTo = append(sendTo, oneSendTo{addr: a, amount: am})
		spendBtc += am
	}
}
Example #3
0
File: balio.go Project: wchh/gocoin
func load_wallet(fn string) (addrs []*btc.BtcAddr) {
	f, e := os.Open(fn)
	if e != nil {
		println(e.Error())
		return
	}
	defer f.Close()
	rd := bufio.NewReader(f)
	linenr := 0
	for {
		var l string
		l, e = rd.ReadString('\n')
		l = strings.Trim(l, " \t\r\n")
		linenr++
		if len(l) > 0 {
			if l[0] == '@' {
				fmt.Println("netsted wallet in line", linenr, "- ignore it")
			} else if l[0] != '#' {
				ls := strings.SplitN(l, " ", 2)
				if len(ls) > 0 {
					a, e := btc.NewAddrFromString(ls[0])
					if e != nil {
						println(fmt.Sprint(fn, ":", linenr), e.Error())
					} else {
						addrs = append(addrs, a)
					}
				}
			}
		}
		if e != nil {
			break
		}
	}
	return
}
Example #4
0
func ReloadMiners() {
	d, _ := ioutil.ReadFile("miners.json")
	if d != nil {
		var MinerIdFile [][3]string
		e := json.Unmarshal(d, &MinerIdFile)
		if e != nil {
			println("miners.json", e.Error())
			return
		}
		MinerIds = nil
		for _, r := range MinerIdFile {
			var rec oneMinerId
			rec.Name = r[0]
			if r[1] != "" {
				rec.Tag = []byte(r[1])
			} else {
				if a, _ := btc.NewAddrFromString(r[2]); a != nil {
					rec.Tag = a.OutScript()
				} else {
					println("Error in miners.json for", r[0])
					continue
				}
			}
			MinerIds = append(MinerIds, rec)
		}
	}
}
Example #5
0
func address_to_key(addr string) *btc.PrivateAddr {
	a, e := btc.NewAddrFromString(addr)
	if e != nil {
		println("Cannot Decode address", addr)
		println(e.Error())
		cleanExit(1)
	}
	return hash_to_key(a.Hash160)
}
Example #6
0
File: send.go Project: wchh/gocoin
// parse the "-batch ..." parameter
func parse_batch() {
	f, e := os.Open(*batch)
	if e == nil {
		defer f.Close()
		td := bufio.NewReader(f)
		var lcnt int
		for {
			li, _, _ := td.ReadLine()
			if li == nil {
				break
			}
			lcnt++
			tmp := strings.SplitN(strings.Trim(string(li), " "), "=", 2)
			if len(tmp) < 2 {
				println("Error in the batch file line", lcnt)
				cleanExit(1)
			}
			if tmp[0][0] == '#' {
				continue // Just a comment-line
			}

			a, e := btc.NewAddrFromString(tmp[0])
			if e != nil {
				println("NewAddrFromString:", e.Error())
				cleanExit(1)
			}
			assert_address_version(a)

			am, e := btc.StringToSatoshis(tmp[1])
			if e != nil {
				println("StringToSatoshis:", e.Error())
				cleanExit(1)
			}

			sendTo = append(sendTo, oneSendTo{addr: a, amount: am})
			spendBtc += am
		}
	} else {
		println(e.Error())
		cleanExit(1)
	}
}
Example #7
0
func main() {
	fmt.Println("Gocoin FetchBal version", lib.Version)
	fmt.Println("NOTE: This tool is deprecated. Use balio instead.")

	proxy = os.Getenv("TOR")
	if proxy != "" {
		fmt.Println("Using Tor at", proxy)
		http.DefaultClient.Transport = &http.Transport{Dial: dials5}
	} else {
		fmt.Println("WARNING: not using Tor (setup TOR variable, if you want)")
	}

	if len(os.Args) < 2 {
		print_help()
		return
	}

	var addrs []*btc.BtcAddr

	if len(os.Args) == 2 {
		fi, er := os.Stat(os.Args[1])
		if er == nil && fi.Size() > 10 && !fi.IsDir() {
			wal := wallet.NewWallet(os.Args[1])
			if wal != nil {
				fmt.Println("Found", len(wal.Addrs), "address(es) in", wal.FileName)
				addrs = wal.Addrs
			}
		}
	}

	if len(addrs) == 0 {
		for i := 1; i < len(os.Args); i++ {
			a, e := btc.NewAddrFromString(os.Args[i])
			if e != nil {
				println(os.Args[i], ": ", e.Error())
				return
			} else {
				addrs = append(addrs, a)
			}
		}
	}

	if len(addrs) == 0 {
		print_help()
		return
	}

	url := "http://blockchain.info/unspent?active="
	for i := range addrs {
		if i > 0 {
			url += "|"
		}
		url += addrs[i].String()
	}

	var sum, outcnt uint64
	r, er := http.Get(url)
	//println(url)
	if er == nil && r.StatusCode == 200 {
		defer r.Body.Close()
		c, _ := ioutil.ReadAll(r.Body)
		var r restype
		er = json.Unmarshal(c[:], &r)
		if er == nil {
			os.RemoveAll("balance/")
			os.Mkdir("balance/", 0700)
			unsp, _ := os.Create("balance/unspent.txt")
			for i := 0; i < len(r.Unspent_outputs); i++ {
				pkscr, _ := hex.DecodeString(r.Unspent_outputs[i].Script)
				b58adr := "???"
				if pkscr != nil {
					ba := btc.NewAddrFromPkScript(pkscr, false)
					if ba != nil {
						b58adr = ba.String()
					}
				}
				txidlsb, _ := hex.DecodeString(r.Unspent_outputs[i].Tx_hash)
				if txidlsb != nil {
					txid := btc.NewUint256(txidlsb)
					rawtx := utils.GetTxFromWeb(txid)
					if rawtx != nil {
						ioutil.WriteFile("balance/"+txid.String()+".tx", rawtx, 0666)
						fmt.Fprintf(unsp, "%s-%03d # %.8f @ %s, %d confs\n",
							txid.String(), r.Unspent_outputs[i].Tx_output_n,
							float64(r.Unspent_outputs[i].Value)/1e8,
							b58adr, r.Unspent_outputs[i].Confirmations)
						sum += r.Unspent_outputs[i].Value
						outcnt++
					} else {
						fmt.Printf(" - cannot fetch %s-%03d\n", txid.String(), r.Unspent_outputs[i].Tx_output_n)
					}
				}
			}
			unsp.Close()
			if outcnt > 0 {
				fmt.Printf("Total %.8f BTC in %d unspent outputs.\n", float64(sum)/1e8, outcnt)
				fmt.Println("The data has been stored in 'balance' folder.")
				fmt.Println("Use it with the wallet app to spend any of it.")
			} else {
				fmt.Println("The fateched balance is empty.")
			}
		} else {
			fmt.Println("Unspent json.Unmarshal", er.Error())
		}
	} else {
		if er != nil {
			fmt.Println("Unspent ", er.Error())
		} else {
			fmt.Println("Unspent HTTP StatusCode", r.StatusCode)
		}
	}
}
Example #8
0
func list_unspent(addr string) {
	fmt.Println("Checking unspent coins for addr", addr)

	defer func() { // in case if ad.OutScript() would panic
		if r := recover(); r != nil {
			err := r.(error)
			fmt.Println("main panic recovered:", err.Error())
		}
	}()

	var ad *btc.BtcAddr
	var e error
	ad, e = btc.NewAddrFromString(addr)
	if e != nil {
		println(e.Error())
		return
	}
	sa := ad.StealthAddr
	var walk chain.FunctionWalkUnspent
	var unsp chain.AllUnspentTx

	if sa == nil {
		exp_scr := ad.OutScript()
		walk = func(tx *chain.QdbRec) {
			for idx, rec := range tx.Outs {
				if rec != nil && bytes.Equal(rec.PKScr, exp_scr) {
					unsp = append(unsp, tx.ToUnspent(uint32(idx), ad))
				}
			}
		}
	} else {
		var c, spen_exp []byte
		var rec, out *chain.QdbTxOut
		var h160 [20]byte

		wallet.FetchStealthKeys()
		d := wallet.FindStealthSecret(sa)
		if d == nil {
			fmt.Println("No matching secret found in your wallet/stealth folder")
			return
		}
		walk = func(tx *chain.QdbRec) {
			for i := 0; i < len(tx.Outs)-1; i++ {
				if rec = tx.Outs[i]; rec == nil {
					continue
				}
				if out = tx.Outs[i+1]; out == nil {
					continue
				}
				if !rec.IsStealthIdx() || !out.IsP2KH() || !ad.StealthAddr.CheckNonce(rec.PKScr[3:40]) {
					continue
				}
				c = btc.StealthDH(rec.PKScr[7:40], d)
				spen_exp = btc.DeriveNextPublic(sa.SpendKeys[0][:], c)
				btc.RimpHash(spen_exp, h160[:])
				if bytes.Equal(out.PKScr[3:23], h160[:]) {
					uo := new(chain.OneUnspentTx)
					uo.TxPrevOut.Hash = tx.TxID
					uo.TxPrevOut.Vout = uint32(i + 1)
					uo.Value = out.Value
					uo.MinedAt = tx.InBlock
					uo.BtcAddr = btc.NewAddrFromHash160(h160[:], btc.AddrVerPubkey(common.CFG.Testnet))
					uo.FixDestString()
					uo.BtcAddr.StealthAddr = sa
					uo.BtcAddr.Extra = ad.Extra
					uo.StealthC = c
					unsp = append(unsp, uo)
				}
			}
		}
	}
	common.BlockChain.Unspent.BrowseUTXO(false, walk)

	sort.Sort(unsp)
	var sum uint64
	for i := range unsp {
		if len(unsp) < 200 {
			fmt.Println(unsp[i].String())
		}
		sum += unsp[i].Value
	}
	fmt.Printf("Total %.8f unspent BTC in %d outputs at address %s\n",
		float64(sum)/1e8, len(unsp), ad.String())
}
Example #9
0
func do_scan_stealth(p string, ignore_prefix bool) {
	ad, _ := btc.NewAddrFromString(p)
	if ad == nil {
		fmt.Println("Specify base58 encoded bitcoin address")
		return
	}

	sa := ad.StealthAddr
	if sa == nil {
		fmt.Println("Specify base58 encoded stealth address")
		return
	}
	if sa.Version != btc.StealthAddressVersion(common.Testnet) {
		fmt.Println("Incorrect version of the stealth address")
		return
	}
	if len(sa.SpendKeys) != 1 {
		fmt.Println("Currently only single spend keys are supported. This address has", len(sa.SpendKeys))
		return
	}

	//fmt.Println("scankey", hex.EncodeToString(sa.ScanKey[:]))
	if ignore_prefix {
		sa.Prefix = []byte{0}
		fmt.Println("Ignoring Prefix inside the address")
	} else if len(sa.Prefix) == 0 {
		fmt.Println("Prefix not present in the address")
	} else {
		fmt.Println("Prefix", sa.Prefix[0], hex.EncodeToString(sa.Prefix[1:]))
	}

	wallet.FetchStealthKeys()
	d := wallet.FindStealthSecret(sa)
	if d == nil {
		fmt.Println("No matching secret found in your wallet/stealth folder")
		return
	}

	var unsp chain.AllUnspentTx
	var c, spen_exp []byte
	var rec, out *chain.QdbTxOut
	var h160 [20]byte

	common.BlockChain.Unspent.BrowseUTXO(true, func(tx *chain.QdbRec) {
		for i := 0; i < len(tx.Outs)-1; i++ {
			if rec = tx.Outs[i]; rec == nil {
				continue
			}
			if out = tx.Outs[i+1]; out == nil {
				continue
			}
			if !rec.IsStealthIdx() || !out.IsP2KH() || !ad.StealthAddr.CheckNonce(rec.PKScr[3:40]) {
				continue
			}
			c = btc.StealthDH(rec.PKScr[7:40], d)
			spen_exp = btc.DeriveNextPublic(sa.SpendKeys[0][:], c)
			btc.RimpHash(spen_exp, h160[:])
			if bytes.Equal(out.PKScr[3:23], h160[:]) {
				uo := new(chain.OneUnspentTx)
				uo.TxPrevOut.Hash = tx.TxID
				uo.TxPrevOut.Vout = uint32(i + 1)
				uo.Value = out.Value
				uo.MinedAt = tx.InBlock
				uo.BtcAddr = btc.NewAddrFromHash160(h160[:], btc.AddrVerPubkey(common.CFG.Testnet))
				uo.FixDestString()
				uo.BtcAddr.StealthAddr = sa
				uo.BtcAddr.Extra = ad.Extra
				uo.StealthC = c
				unsp = append(unsp, uo)
			}
		}
	})

	sort.Sort(unsp)
	os.RemoveAll("balance")
	os.MkdirAll("balance/", 0770)
	utxt, _ := os.Create("balance/unspent.txt")
	fmt.Print(wallet.DumpBalance(unsp, utxt, true, false))
}
Example #10
0
File: balio.go Project: wchh/gocoin
func main() {
	fmt.Println("Gocoin BalIO version", lib.Version)

	if len(os.Args) < 2 {
		print_help()
		return
	}

	proxy = os.Getenv("TOR")
	if proxy != "" {
		fmt.Println("Using Tor at", proxy)
		http.DefaultClient.Transport = &http.Transport{Dial: dials5}
	} else {
		fmt.Println("WARNING: not using Tor (setup TOR variable, if you want)")
	}

	var addrs []*btc.BtcAddr

	var argz []string
	for i := 1; i < len(os.Args); i++ {
		if os.Args[i] == "-ltc" {
			ltc = true
		} else if os.Args[i] == "-t" {
			tbtc = true
		} else {
			argz = append(argz, os.Args[i])
		}
	}

	if len(argz) == 1 {
		fi, er := os.Stat(argz[0])
		if er == nil && fi.Size() > 10 && !fi.IsDir() {
			addrs = load_wallet(argz[0])
			if addrs != nil {
				fmt.Println("Found", len(addrs), "address(es) in", argz[0])
			}
		}
	}

	if len(addrs) == 0 {
		for i := range argz {
			a, e := btc.NewAddrFromString(argz[i])
			if e != nil {
				println(argz[i], ": ", e.Error())
				return
			} else {
				addrs = append(addrs, a)
			}
		}
	}

	if len(addrs) == 0 {
		print_help()
		return
	}

	for i := range addrs {
		switch addrs[i].Version {
		case 48:
			ltc = true
		case 111:
			tbtc = true
		}
	}

	if tbtc && ltc {
		println("Litecoin's testnet is not suppported")
		return
	}

	url := base_url() + "address/unspent/"
	for i := range addrs {
		if i > 0 {
			url += ","
		}
		url += addrs[i].String()
	}

	if len(addrs) == 0 {
		println("No addresses to fetch balance for")
		return
	}

	var sum, outcnt uint64

	os.RemoveAll("balance/")
	os.Mkdir("balance/", 0700)
	unsp, _ := os.Create("balance/unspent.txt")
	for off := 0; off < len(addrs); off += MAX_UNSPENT_AT_ONCE {
		var r []prvout
		if off+MAX_UNSPENT_AT_ONCE < len(addrs) {
			r = get_unspent(addrs[off : off+MAX_UNSPENT_AT_ONCE])
		} else {
			r = get_unspent(addrs[off:])
		}
		if r == nil {
			return
		}
		for i := range r {
			for j := range r[i].Unspent {
				txraw := get_raw_tx(r[i].Unspent[j].Tx)
				if len(txraw) > 0 {
					ioutil.WriteFile("balance/"+r[i].Unspent[j].Tx+".tx", txraw, 0666)
				} else {
					println("ERROR: cannot fetch raw tx data for", r[i].Unspent[j].Tx)
					os.Exit(1)
				}

				val, _ := btc.StringToSatoshis(r[i].Unspent[j].Amount)
				sum += val
				outcnt++
				fmt.Fprintf(unsp, "%s-%03d # %s @ %s, %d confs", r[i].Unspent[j].Tx,
					r[i].Unspent[j].N, r[i].Unspent[j].Amount, r[i].Address, r[i].Unspent[j].Confirmations)
				fmt.Fprintln(unsp)
			}
		}
	}
	unsp.Close()
	if outcnt > 0 {
		fmt.Printf("Total %.8f %s in %d unspent outputs.\n", float64(sum)/1e8, curr_unit(), outcnt)
		fmt.Println("The data has been stored in 'balance' folder.")
		fmt.Println("Use it with the wallet app to spend any of it.")
	} else {
		fmt.Println("The fateched balance is empty.")
	}
}
Example #11
0
func LoadWalfile(fn string, included int) (addrs []*btc.BtcAddr) {
	waldir, walname := filepath.Split(fn)
	f, e := os.Open(fn)
	if e != nil {
		println(e.Error())
		return
	}
	defer f.Close()
	rd := bufio.NewReader(f)
	linenr := 0
	for {
		var l string
		l, e = rd.ReadString('\n')
		space_first := len(l) > 0 && l[0] == ' '
		l = strings.Trim(l, " \t\r\n")
		linenr++
		if len(l) > 0 {
			if l[0] == '@' {
				if included > 3 {
					println(fmt.Sprint(fn, ":", linenr), "Too many nested wallets")
				} else {
					ifn := strings.Trim(l[1:], " \n\t\t")
					addrs = append(addrs, LoadWalfile(waldir+ifn, included+1)...)
				}
			} else {
				var s string
				if l[0] != '#' {
					s = l
				} else if !PrecachingComplete && len(l) > 10 && l[1] == '1' {
					s = l[1:] // While pre-caching addresses, include ones that are commented out
				}
				if s != "" {
					ls := strings.SplitN(s, " ", 2)
					if len(ls) > 0 {
						a, e := btc.NewAddrFromString(ls[0])
						if e != nil {
							println(fmt.Sprint(fn, ":", linenr), e.Error())
						} else {
							a.Extra.Wallet = walname
							if len(ls) > 1 {
								a.Extra.Label = ls[1]
							}
							a.Extra.Virgin = space_first
							addrs = append(addrs, a)
						}
					}
				}
			}
		}
		if e != nil {
			break
		}
	}

	// remove duplicated addresses
	for i := 0; i < len(addrs)-1; i++ {
		for j := i + 1; j < len(addrs); {
			if addrs[i].Hash160 == addrs[j].Hash160 {
				if addrs[i].StealthAddr != nil && !bytes.Equal(addrs[i].Prefix, addrs[j].Prefix) {
					fmt.Println("WARNING: duplicate stealth addresses with different prefixes. Merging them into one with null-prefix")
					fmt.Println(" -", addrs[i].PrefixLen(), addrs[i].String())
					fmt.Println(" -", addrs[j].PrefixLen(), addrs[j].String())
					addrs[i].Prefix = []byte{0}
					addrs[i].Enc58str = addrs[i].StealthAddr.String()
					fmt.Println(" +", addrs[i].PrefixLen(), addrs[i].String())
				}
				if addrs[i].Extra.Wallet == AddrBookFileName {
					// Overwrite wallet name if is was ADDRESS (book)
					addrs[i].Extra.Wallet = addrs[j].Extra.Wallet
				}
				addrs[i].Extra.Label += "*" + addrs[j].Extra.Label
				addrs = append(addrs[:j], addrs[j+1:]...)
			} else {
				j++
			}
		}
	}
	return
}
Example #12
0
func main() {
	var msg []byte

	flag.Parse()

	if *help || *addr == "" || *sign == "" {
		flag.PrintDefaults()
		return
	}

	ad, er := btc.NewAddrFromString(*addr)
	if !*litecoin && ad != nil && ad.Version == ltc.AddrVerPubkey(false) {
		*litecoin = true
	}
	if er != nil {
		println("Address:", er.Error())
		flag.PrintDefaults()
		return
	}

	nv, btcsig, er := btc.ParseMessageSignature(*sign)
	if er != nil {
		println("ParseMessageSignature:", er.Error())
		return
	}

	if *mess != "" {
		msg = []byte(*mess)
	} else if *mfil != "" {
		msg, er = ioutil.ReadFile(*mfil)
		if er != nil {
			println(er.Error())
			return
		}
	} else {
		if *verb {
			fmt.Println("Enter the message:")
		}
		msg, _ = ioutil.ReadAll(os.Stdin)
	}

	if *unix {
		if *verb {
			fmt.Println("Enforcing Unix text format")
		}
		msg = bytes.Replace(msg, []byte{'\r'}, nil, -1)
	}

	hash := make([]byte, 32)
	if *litecoin {
		ltc.HashFromMessage(msg, hash)
	} else {
		btc.HashFromMessage(msg, hash)
	}

	compressed := false
	if nv >= 31 {
		if *verb {
			fmt.Println("compressed key")
		}
		nv -= 4
		compressed = true
	}

	pub := btcsig.RecoverPublicKey(hash[:], int(nv-27))
	if pub != nil {
		pk := pub.Bytes(compressed)
		ok := btc.EcdsaVerify(pk, btcsig.Bytes(), hash)
		if ok {
			sa := btc.NewAddrFromPubkey(pk, ad.Version)
			if ad.Hash160 != sa.Hash160 {
				fmt.Println("BAD signature for", ad.String())
				if bytes.IndexByte(msg, '\r') != -1 {
					fmt.Println("You have CR chars in the message. Try to verify with -u switch.")
				}
				os.Exit(1)
			} else {
				fmt.Println("Signature OK")
			}
		} else {
			println("BAD signature")
			os.Exit(1)
		}
	} else {
		println("BAD, BAD, BAD signature")
		os.Exit(1)
	}
}
Example #13
0
func dl_payment(w http.ResponseWriter, r *http.Request) {
	if !ipchecker(r) {
		return
	}

	var err string

	if len(r.Form["outcnt"]) == 1 {
		var thisbal chain.AllUnspentTx
		var pay_cmd string
		var totalinput, spentsofar uint64
		var change_addr *btc.BtcAddr
		var multisig_input []*wallet.MultisigAddr

		addrs_to_msign := make(map[string]bool)

		tx := new(btc.Tx)
		tx.Version = 1
		tx.Lock_time = 0

		outcnt, _ := strconv.ParseUint(r.Form["outcnt"][0], 10, 32)

		wallet.BalanceMutex.Lock()
		for i := 1; i <= int(outcnt); i++ {
			is := fmt.Sprint(i)
			if len(r.Form["txout"+is]) == 1 && r.Form["txout"+is][0] == "on" {
				hash := btc.NewUint256FromString(r.Form["txid"+is][0])
				if hash != nil {
					vout, er := strconv.ParseUint(r.Form["txvout"+is][0], 10, 32)
					if er == nil {
						var po = btc.TxPrevOut{Hash: hash.Hash, Vout: uint32(vout)}
						for j := range wallet.MyBalance {
							if wallet.MyBalance[j].TxPrevOut == po {
								thisbal = append(thisbal, wallet.MyBalance[j])

								// Add the input to our tx
								tin := new(btc.TxIn)
								tin.Input = wallet.MyBalance[j].TxPrevOut
								tin.Sequence = 0xffffffff
								tx.TxIn = append(tx.TxIn, tin)

								// Add new multisig address description
								_, msi := wallet.IsMultisig(wallet.MyBalance[j].BtcAddr)
								multisig_input = append(multisig_input, msi)
								if msi != nil {
									for ai := range msi.ListOfAddres {
										addrs_to_msign[msi.ListOfAddres[ai]] = true
									}
								}

								// Add the value to total input value
								totalinput += wallet.MyBalance[j].Value

								// If no change specified, use the first input addr as it
								if change_addr == nil {
									change_addr = wallet.MyBalance[j].BtcAddr
								}
							}
						}
					}
				}
			}
		}
		wallet.BalanceMutex.Unlock()

		for i := 1; ; i++ {
			adridx := fmt.Sprint("adr", i)
			btcidx := fmt.Sprint("btc", i)

			if len(r.Form[adridx]) != 1 || len(r.Form[btcidx]) != 1 {
				break
			}

			if len(r.Form[adridx][0]) > 1 {
				addr, er := btc.NewAddrFromString(r.Form[adridx][0])
				if er == nil {
					am, er := btc.StringToSatoshis(r.Form[btcidx][0])
					if er == nil && am > 0 {
						if pay_cmd == "" {
							pay_cmd = "wallet -useallinputs -send "
						} else {
							pay_cmd += ","
						}
						pay_cmd += addr.Enc58str + "=" + btc.UintToBtc(am)

						outs, er := btc.NewSpendOutputs(addr, am, common.CFG.Testnet)
						if er != nil {
							err = er.Error()
							goto error
						}
						tx.TxOut = append(tx.TxOut, outs...)

						spentsofar += am
					} else {
						err = "Incorrect amount (" + r.Form[btcidx][0] + ") for Output #" + fmt.Sprint(i)
						goto error
					}
				} else {
					err = "Incorrect address (" + r.Form[adridx][0] + ") for Output #" + fmt.Sprint(i)
					goto error
				}
			}
		}

		if pay_cmd == "" {
			err = "No inputs selected"
			goto error
		}

		am, er := btc.StringToSatoshis(r.Form["txfee"][0])
		if er != nil {
			err = "Incorrect fee value: " + r.Form["txfee"][0]
			goto error
		}

		pay_cmd += " -fee " + r.Form["txfee"][0]
		spentsofar += am

		if len(r.Form["change"][0]) > 1 {
			addr, er := btc.NewAddrFromString(r.Form["change"][0])
			if er != nil {
				err = "Incorrect change address: " + r.Form["change"][0]
				goto error
			}
			change_addr = addr
		}
		pay_cmd += " -change " + change_addr.String()

		if totalinput > spentsofar {
			// Add change output
			outs, er := btc.NewSpendOutputs(change_addr, totalinput-spentsofar, common.CFG.Testnet)
			if er != nil {
				err = er.Error()
				goto error
			}
			tx.TxOut = append(tx.TxOut, outs...)
		}

		buf := new(bytes.Buffer)
		zi := zip.NewWriter(buf)

		was_tx := make(map[[32]byte]bool, len(thisbal))
		for i := range thisbal {
			if was_tx[thisbal[i].TxPrevOut.Hash] {
				continue
			}
			was_tx[thisbal[i].TxPrevOut.Hash] = true
			txid := btc.NewUint256(thisbal[i].TxPrevOut.Hash[:])
			fz, _ := zi.Create("balance/" + txid.String() + ".tx")
			wallet.GetRawTransaction(thisbal[i].MinedAt, txid, fz)
		}

		fz, _ := zi.Create("balance/unspent.txt")
		for i := range thisbal {
			fmt.Fprintln(fz, thisbal[i].UnspentTextLine())
		}

		if len(addrs_to_msign) > 0 {
			// Multisig (or mixed) transaction ...
			for i := range multisig_input {
				if multisig_input[i] == nil {
					continue
				}
				d, er := hex.DecodeString(multisig_input[i].RedeemScript)
				if er != nil {
					println("ERROR parsing hex RedeemScript:", er.Error())
					continue
				}
				ms, er := btc.NewMultiSigFromP2SH(d)
				if er != nil {
					println("ERROR parsing bin RedeemScript:", er.Error())
					continue
				}
				tx.TxIn[i].ScriptSig = ms.Bytes()
			}
			fz, _ = zi.Create("multi_" + common.CFG.PayCommandName)
			fmt.Fprintln(fz, "wallet -raw tx2sign.txt")
			for k, _ := range addrs_to_msign {
				fmt.Fprintln(fz, "wallet -msign", k, "-raw ...")
			}
		} else {
			if pay_cmd != "" {
				fz, _ = zi.Create(common.CFG.PayCommandName)
				fz.Write([]byte(pay_cmd))
			}
		}

		// Non-multisig transaction ...
		fz, _ = zi.Create("tx2sign.txt")
		fz.Write([]byte(hex.EncodeToString(tx.Serialize())))

		zi.Close()
		w.Header()["Content-Type"] = []string{"application/zip"}
		w.Write(buf.Bytes())
		return
	} else {
		err = "Bad request"
	}
error:
	s := load_template("send_error.html")
	write_html_head(w, r)
	s = strings.Replace(s, "<!--ERROR_MSG-->", err, 1)
	w.Write([]byte(s))
	write_html_tail(w)
}