Пример #1
0
// apply the chnages to the balance folder
func apply_to_balance(tx *btc.Tx) {
	f, _ := os.Create("balance/unspent.txt")
	if f != nil {
		// append new outputs at the end of unspentOuts
		ioutil.WriteFile("balance/"+tx.Hash.String()+".tx", tx.Serialize(), 0600)

		fmt.Println("Adding", len(tx.TxOut), "new output(s) to the balance/ folder...")
		for out := range tx.TxOut {
			if k := pkscr_to_key(tx.TxOut[out].Pk_script); k != nil {
				uns := new(unspRec)
				uns.key = k
				uns.TxPrevOut.Hash = tx.Hash.Hash
				uns.TxPrevOut.Vout = uint32(out)
				uns.label = fmt.Sprint("# ", btc.UintToBtc(tx.TxOut[out].Value), " BTC @ ", k.BtcAddr.String())
				//stealth bool TODO: maybe we can fix it...
				unspentOuts = append(unspentOuts, uns)
			}
		}

		for j := range unspentOuts {
			if !unspentOuts[j].spent {
				fmt.Fprintln(f, unspentOuts[j].String())
			}
		}
		f.Close()
	} else {
		println("ERROR: Cannot create balance/unspent.txt")
	}
}
Пример #2
0
func write_tx_file(tx *btc.Tx) {
	signedrawtx := tx.Serialize()
	tx.Hash = btc.NewSha2Hash(signedrawtx)

	hs := tx.Hash.String()
	fmt.Println(hs)

	f, _ := os.Create(hs[:8] + ".txt")
	if f != nil {
		f.Write([]byte(hex.EncodeToString(signedrawtx)))
		f.Close()
		fmt.Println("Transaction data stored in", hs[:8]+".txt")
	}
}
Пример #3
0
func mk_out_tx(sig_scr, pk_scr []byte) (output_tx *btc.Tx) {
	// We build input_tx only to calculate it's hash for output_tx
	input_tx := new(btc.Tx)
	input_tx.Version = 1
	input_tx.TxIn = []*btc.TxIn{&btc.TxIn{Input: btc.TxPrevOut{Vout: 0xffffffff},
		ScriptSig: []byte{0, 0}, Sequence: 0xffffffff}}
	input_tx.TxOut = []*btc.TxOut{&btc.TxOut{Pk_script: pk_scr}}
	// Lock_time = 0

	output_tx = new(btc.Tx)
	output_tx.Version = 1
	output_tx.TxIn = []*btc.TxIn{&btc.TxIn{Input: btc.TxPrevOut{Hash: btc.Sha2Sum(input_tx.Serialize()), Vout: 0},
		ScriptSig: sig_scr, Sequence: 0xffffffff}}
	output_tx.TxOut = []*btc.TxOut{&btc.TxOut{}}
	// Lock_time = 0

	return
}
Пример #4
0
// return miner ID of the given coinbase transaction
func TxMiner(cbtx *btc.Tx) (string, int) {
	txdat := cbtx.Serialize()
	for i, m := range MinerIds {
		if bytes.Equal(m.Tag, []byte("_p2pool_")) { // P2Pool
			if len(cbtx.TxOut) > 10 &&
				bytes.Equal(cbtx.TxOut[len(cbtx.TxOut)-1].Pk_script[:2], []byte{0x6A, 0x28}) {
				return m.Name, i
			}
		} else if bytes.Contains(txdat, m.Tag) {
			return m.Name, i
		}
	}

	adr := btc.NewAddrFromPkScript(cbtx.TxOut[0].Pk_script, Testnet)
	if adr != nil {
		return adr.String(), -1
	}

	return "", -1
}
Пример #5
0
// Download (and re-assemble) raw transaction from blockexplorer.com
func GetTxFromExplorer(txid *btc.Uint256) ([]byte, []byte) {
	url := "http://blockexplorer.com/rawtx/" + txid.String()
	r, er := http.Get(url)
	if er == nil && r.StatusCode == 200 {
		defer r.Body.Close()
		c, _ := ioutil.ReadAll(r.Body)
		var txx onetx
		er = json.Unmarshal(c[:], &txx)
		if er == nil {
			// This part looks weird, but this is how I solved seq=FFFFFFFF, if the field not present:
			for i := range txx.In {
				txx.In[i].Sequence = 0xffffffff
			}
			json.Unmarshal(c[:], &txx)
			// ... end of the weird solution

			tx := new(btc.Tx)
			tx.Version = txx.Ver
			tx.TxIn = make([]*btc.TxIn, len(txx.In))
			for i := range txx.In {
				tx.TxIn[i] = new(btc.TxIn)
				tx.TxIn[i].Input.Hash = btc.NewUint256FromString(txx.In[i].Prev_out.Hash).Hash
				tx.TxIn[i].Input.Vout = txx.In[i].Prev_out.N
				if txx.In[i].Prev_out.N == 0xffffffff &&
					txx.In[i].Prev_out.Hash == "0000000000000000000000000000000000000000000000000000000000000000" {
					tx.TxIn[i].ScriptSig, _ = hex.DecodeString(txx.In[i].Coinbase)
				} else {
					tx.TxIn[i].ScriptSig, _ = btc.DecodeScript(txx.In[i].ScriptSig)
				}
				tx.TxIn[i].Sequence = txx.In[i].Sequence
			}
			tx.TxOut = make([]*btc.TxOut, len(txx.Out))
			for i := range txx.Out {
				am, er := btc.StringToSatoshis(txx.Out[i].Value)
				if er != nil {
					fmt.Println("Incorrect BTC amount", txx.Out[i].Value, er.Error())
					return nil, nil
				}
				tx.TxOut[i] = new(btc.TxOut)
				tx.TxOut[i].Value = am
				tx.TxOut[i].Pk_script, _ = btc.DecodeScript(txx.Out[i].ScriptPubKey)
			}
			tx.Lock_time = txx.Lock_time
			rawtx := tx.Serialize()
			if txx.Size != uint(len(rawtx)) {
				fmt.Printf("Transaction size mismatch: %d expexted, %d decoded\n", txx.Size, len(rawtx))
				return nil, rawtx
			}
			curid := btc.NewSha2Hash(rawtx)
			if !curid.Equal(txid) {
				fmt.Println("The downloaded transaction does not match its ID.", txid.String())
				return nil, rawtx
			}
			return rawtx, rawtx
		} else {
			fmt.Println("json.Unmarshal:", er.Error())
		}
	} else {
		if er != nil {
			fmt.Println("http.Get:", er.Error())
		} else {
			fmt.Println("StatusCode=", r.StatusCode)
		}
	}
	return nil, nil
}
Пример #6
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)
}