Example #1
0
func xmp_txs2s(w http.ResponseWriter, r *http.Request) {
	if !ipchecker(r) {
		return
	}

	r.ParseForm()

	if checksid(r) && len(r.Form["del"]) > 0 {
		tid := btc.NewUint256FromString(r.Form["del"][0])
		if tid != nil {
			network.TxMutex.Lock()
			delete(network.TransactionsToSend, tid.Hash)
			network.TxMutex.Unlock()
		}
	}

	if checksid(r) && len(r.Form["send"]) > 0 {
		tid := btc.NewUint256FromString(r.Form["send"][0])
		if tid != nil {
			network.TxMutex.Lock()
			if ptx, ok := network.TransactionsToSend[tid.Hash]; ok {
				network.TxMutex.Unlock()
				cnt := network.NetRouteInv(1, tid, nil)
				ptx.Invsentcnt += cnt
			}
		}
	}

	w.Header()["Content-Type"] = []string{"text/xml"}

	if len(r.Form["id"]) > 0 {
		output_tx_xml(w, r.Form["id"][0])
		return
	}

	w.Write([]byte("<txpool>"))
	network.TxMutex.Lock()
	for k, v := range network.TransactionsToSend {
		w.Write([]byte("<tx>"))
		fmt.Fprint(w, "<id>", btc.NewUint256(k[:]).String(), "</id>")
		fmt.Fprint(w, "<time>", v.Firstseen.Unix(), "</time>")
		fmt.Fprint(w, "<len>", len(v.Data), "</len>")
		fmt.Fprint(w, "<own>", v.Own, "</own>")
		fmt.Fprint(w, "<firstseen>", v.Firstseen.Unix(), "</firstseen>")
		fmt.Fprint(w, "<invsentcnt>", v.Invsentcnt, "</invsentcnt>")
		fmt.Fprint(w, "<sentcnt>", v.SentCnt, "</sentcnt>")
		fmt.Fprint(w, "<sentlast>", v.Lastsent.Unix(), "</sentlast>")
		fmt.Fprint(w, "<volume>", v.Volume, "</volume>")
		fmt.Fprint(w, "<fee>", v.Fee, "</fee>")
		fmt.Fprint(w, "<blocked>", v.Blocked, "</blocked>")
		w.Write([]byte("</tx>"))
	}
	network.TxMutex.Unlock()
	w.Write([]byte("</txpool>"))
}
Example #2
0
func raw_tx(w http.ResponseWriter, r *http.Request) {
	if !ipchecker(r) {
		return
	}

	defer func() {
		if r := recover(); r != nil {
			fmt.Fprintln(w, "Error")
			if err, ok := r.(error); ok {
				fmt.Fprintln(w, err.Error())
			}
		}
	}()

	r.ParseForm()
	if len(r.Form["id"]) == 0 {
		fmt.Println("No id given")
		return
	}

	txid := btc.NewUint256FromString(r.Form["id"][0])
	fmt.Fprintln(w, "TxID:", txid.String())
	if tx, ok := network.TransactionsToSend[txid.Hash]; ok {
		s, _, _, _, _ := usif.DecodeTx(tx.Tx)
		w.Write([]byte(s))
	} else {
		fmt.Fprintln(w, "Not found")
	}
}
Example #3
0
func host_init() {
	BtcRootDir := BitcoinHome()

	if *datadir == "" {
		GocoinHomeDir = BtcRootDir + "gocoin/"
	} else {
		GocoinHomeDir = *datadir + "/"
	}

	if *testnet { // testnet3
		DefaultTcpPort = 18333
		GenesisBlock = btc.NewUint256FromString("000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943")
		Magic = [4]byte{0x0B, 0x11, 0x09, 0x07}
		GocoinHomeDir += "tstnet/"
		AddrVersion = 0x6f
		BtcRootDir += "testnet3/"
	} else {
		DefaultTcpPort = 8333
		GenesisBlock = btc.NewUint256FromString("000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f")
		Magic = [4]byte{0xF9, 0xBE, 0xB4, 0xD9}
		GocoinHomeDir += "btcnet/"
		AddrVersion = 0x00
	}

	fi, e := os.Stat(GocoinHomeDir + "blockchain.idx")
	if e != nil || fi.Size() < 100 {
		os.RemoveAll(GocoinHomeDir)
		fmt.Println("You seem to be running Gocoin for the fist time on this PC")
		fi, e = os.Stat(BtcRootDir + "blocks/blk00000.dat")
		if e == nil && fi.Size() > 1024*1024 {
			fmt.Println("There is a database from Satoshi client on your disk...")
			if ask_yes_no("Go you want to import this database into Gocoin?") {
				import_blockchain(BtcRootDir + "blocks")
			}
		}
	}

	fmt.Println("Opening blockchain...")
	sta := time.Now().UnixNano()
	BlockChain = btc.NewChain(GocoinHomeDir, GenesisBlock, *rescan)
	sto := time.Now().UnixNano()
	fmt.Printf("Blockchain open in %.3f seconds\n", float64(sto-sta)/1e9)
	if *nosync {
		BlockChain.DoNotSync = true
		fmt.Println("Syncing is disabled. Switch it on with 'sync' command")
	}
}
Example #4
0
File: txs.go Project: vipwzw/gocoin
func output_tx_xml(w http.ResponseWriter, id string) {
	txid := btc.NewUint256FromString(id)
	w.Write([]byte("<tx>"))
	fmt.Fprint(w, "<id>", id, "</id>")
	if t2s, ok := network.TransactionsToSend[txid.BIdx()]; ok {
		w.Write([]byte("<status>OK</status>"))
		tx := t2s.Tx
		w.Write([]byte("<inputs>"))
		for i := range tx.TxIn {
			w.Write([]byte("<input>"))
			var po *btc.TxOut
			inpid := btc.NewUint256(tx.TxIn[i].Input.Hash[:])
			if txinmem, ok := network.TransactionsToSend[inpid.BIdx()]; ok {
				if int(tx.TxIn[i].Input.Vout) < len(txinmem.TxOut) {
					po = txinmem.TxOut[tx.TxIn[i].Input.Vout]
				}
			} else {
				po, _ = common.BlockChain.Unspent.UnspentGet(&tx.TxIn[i].Input)
			}
			if po != nil {
				ok := btc.VerifyTxScript(tx.TxIn[i].ScriptSig, po.Pk_script, i, tx, true)
				if !ok {
					w.Write([]byte("<status>Script FAILED</status>"))
				} else {
					w.Write([]byte("<status>OK</status>"))
				}
				fmt.Fprint(w, "<value>", po.Value, "</value>")
				fmt.Fprint(w, "<addr>", btc.NewAddrFromPkScript(po.Pk_script, common.Testnet).String(), "</addr>")
				fmt.Fprint(w, "<block>", po.BlockHeight, "</block>")
			} else {
				w.Write([]byte("<status>UNKNOWN INPUT</status>"))
			}
			w.Write([]byte("</input>"))
		}
		w.Write([]byte("</inputs>"))

		w.Write([]byte("<outputs>"))
		for i := range tx.TxOut {
			w.Write([]byte("<output>"))
			fmt.Fprint(w, "<value>", tx.TxOut[i].Value, "</value>")
			adr := btc.NewAddrFromPkScript(tx.TxOut[i].Pk_script, common.Testnet)
			if adr != nil {
				fmt.Fprint(w, "<addr>", adr.String(), "</addr>")
			} else {
				fmt.Fprint(w, "<addr>", "scr:"+hex.EncodeToString(tx.TxOut[i].Pk_script), "</addr>")
			}
			w.Write([]byte("</output>"))
		}
		w.Write([]byte("</outputs>"))
	} else {
		w.Write([]byte("<status>Not found</status>"))
	}
	w.Write([]byte("</tx>"))
}
Example #5
0
func dec_tx(par string) {
	txid := btc.NewUint256FromString(par)
	if txid == nil {
		fmt.Println("You must specify a valid transaction ID for this command.")
		list_txs("")
		return
	}
	if tx, ok := network.TransactionsToSend[txid.Hash]; ok {
		s, _, _, _, _ := usif.DecodeTx(tx.Tx)
		fmt.Println(s)
	} else {
		fmt.Println("No such transaction ID in the memory pool.")
	}
}
Example #6
0
func send_tx(par string) {
	txid := btc.NewUint256FromString(par)
	if txid == nil {
		fmt.Println("You must specify a valid transaction ID for this command.")
		list_txs("")
		return
	}
	if _, ok := TransactionsToSend[txid.Hash]; !ok {
		fmt.Println("No such transaction ID in the memory pool.")
		list_txs("")
		return
	}
	cnt := NetSendInv(1, txid.Hash[:], nil)
	fmt.Println("Transaction", txid.String(), "broadcasted to", cnt, "node(s)")
	fmt.Println("If it does not appear in the chain, you may want to redo it.")
}
Example #7
0
func main() {
	fmt.Println("Gocoin FetchTx version", btc.SourcesTag)

	if len(os.Args) < 2 {
		fmt.Println("Specify transaction id on the command line (MSB).")
		return
	}

	txid := btc.NewUint256FromString(os.Args[1])
	rawtx := utils.GetTxFromWeb(txid)
	if rawtx == nil {
		fmt.Println("Error fetching the transaction")
	} else {
		ioutil.WriteFile(txid.String()+".tx", rawtx, 0666)
	}
}
Example #8
0
func GetTx(txid *btc.Uint256, vout int) bool {
	r, er := http.Get("http://blockexplorer.com/rawtx/" + txid.String())
	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 {
			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
				tx.TxIn[i].ScriptSig, _ = btc.DecodeScript(txx.In[i].ScriptSig)
				tx.TxIn[i].Sequence = 0xffffffff
			}
			tx.TxOut = make([]*btc.TxOut, len(txx.Out))
			for i := range txx.Out {
				tx.TxOut[i] = new(btc.TxOut)
				tx.TxOut[i].Value = btc.ParseValue(txx.Out[i].Value)
				tx.TxOut[i].Pk_script, _ = btc.DecodeScript(txx.Out[i].ScriptPubKey)
			}
			tx.Lock_time = txx.Lock_time
			rawtx := tx.Serialize()
			curid := btc.NewSha2Hash(rawtx)
			if !curid.Equal(txid) {
				fmt.Println("The downloaded transaction does not match its ID.")
				return false
			}
			ioutil.WriteFile("balance/"+curid.String()+".tx", rawtx, 0666)
			return true
		} else {
			fmt.Println("json.Unmarshal:", er.Error())
		}
	} else {
		if er != nil {
			fmt.Println("http.Get:", er.Error())
		} else {
			fmt.Println("StatusCode=", r.StatusCode)
		}
	}
	return false
}
Example #9
0
func del_tx(par string) {
	txid := btc.NewUint256FromString(par)
	if txid == nil {
		fmt.Println("You must specify a valid transaction ID for this command.")
		list_txs("")
		return
	}
	network.TxMutex.Lock()
	if _, ok := network.TransactionsToSend[txid.Hash]; !ok {
		network.TxMutex.Unlock()
		fmt.Println("No such transaction ID in the memory pool.")
		list_txs("")
		return
	}
	delete(network.TransactionsToSend, txid.Hash)
	network.TxMutex.Unlock()
	fmt.Println("Transaction", txid.String(), "removed from the memory pool")
}
Example #10
0
func send_tx(par string) {
	txid := btc.NewUint256FromString(par)
	if txid == nil {
		fmt.Println("You must specify a valid transaction ID for this command.")
		list_txs("")
		return
	}
	network.TxMutex.Lock()
	if ptx, ok := network.TransactionsToSend[txid.BIdx()]; ok {
		network.TxMutex.Unlock()
		cnt := network.NetRouteInv(1, txid, nil)
		ptx.Invsentcnt += cnt
		fmt.Println("INV for TxID", txid.String(), "sent to", cnt, "node(s)")
		fmt.Println("If it does not appear in the chain, you may want to redo it.")
	} else {
		network.TxMutex.Unlock()
		fmt.Println("No such transaction ID in the memory pool.")
		list_txs("")
	}
}
Example #11
0
func send1_tx(par string) {
	txid := btc.NewUint256FromString(par)
	if txid == nil {
		fmt.Println("You must specify a valid transaction ID for this command.")
		list_txs("")
		return
	}
	network.TxMutex.Lock()
	if ptx, ok := network.TransactionsToSend[txid.Hash]; ok {
		network.TxMutex.Unlock()
		usif.SendInvToRandomPeer(1, txid)
		ptx.Invsentcnt++
		fmt.Println("INV for TxID", txid.String(), "sent to a random node")
		fmt.Println("If it does not appear in the chain, you may want to redo it.")
	} else {
		network.TxMutex.Unlock()
		fmt.Println("No such transaction ID in the memory pool.")
		list_txs("")
	}
}
Example #12
0
func dump_block(s string) {
	h := btc.NewUint256FromString(s)
	if h == nil {
		println("Specify block's hash")
		return
	}
	bl, _, e := common.BlockChain.Blocks.BlockGet(h)
	if e != nil {
		println(e.Error())
		return
	}
	fn := h.String() + ".bin"
	f, e := os.Create(fn)
	if e != nil {
		println(e.Error())
		return
	}
	f.Write(bl)
	f.Close()
	fmt.Println("Block saved to file:", fn)
}
Example #13
0
func main() {
	StartTime = time.Now()

	GenesisBlock := btc.NewUint256FromString("000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f")
	Magic = [4]byte{0xF9, 0xBE, 0xB4, 0xD9}
	GocoinHomeDir = "btcnet" + string(os.PathSeparator)

	BlockChain = btc.NewChain(GocoinHomeDir, GenesisBlock, false)
	if btc.AbortNow || BlockChain == nil {
		return
	}

	new_connection("129.132.230.71")
	//new_connection("198.12.127.2")
	//new_connection("85.17.239.32")
	//new_connection("94.23.228.130")
	//new_connection("129.132.230.75")
	//new_connection("178.63.63.214")
	get_headers()
	return
}
Example #14
0
// load the content of the "balance/" folder
func load_balance() {
	var unknownInputs int
	f, e := os.Open("balance/unspent.txt")
	if e != nil {
		println(e.Error())
		os.Exit(1)
	}
	rd := bufio.NewReader(f)
	for {
		l, _, e := rd.ReadLine()
		if len(l) == 0 && e != nil {
			break
		}
		if l[64] == '-' {
			txid := btc.NewUint256FromString(string(l[:64]))
			rst := strings.SplitN(string(l[65:]), " ", 2)
			vout, _ := strconv.ParseUint(rst[0], 10, 32)
			uns := new(btc.TxPrevOut)
			copy(uns.Hash[:], txid.Hash[:])
			uns.Vout = uint32(vout)
			lab := ""
			if len(rst) > 1 {
				lab = rst[1]
			}

			if _, ok := loadedTxs[txid.Hash]; !ok {
				tf, _ := os.Open("balance/" + txid.String() + ".tx")
				if tf != nil {
					siz, _ := tf.Seek(0, os.SEEK_END)
					tf.Seek(0, os.SEEK_SET)
					buf := make([]byte, siz)
					tf.Read(buf)
					tf.Close()
					th := btc.Sha2Sum(buf)
					if bytes.Equal(th[:], txid.Hash[:]) {
						tx, _ := btc.NewTx(buf)
						if tx != nil {
							loadedTxs[txid.Hash] = tx
						} else {
							println("transaction is corrupt:", txid.String())
						}
					} else {
						println("transaction file is corrupt:", txid.String())
						os.Exit(1)
					}
				} else {
					println("transaction file not found:", txid.String())
					os.Exit(1)
				}
			}

			uo := UO(uns)
			fnd := false
			for j := range publ_addrs {
				if publ_addrs[j].Owns(uo.Pk_script) {
					unspentOuts = append(unspentOuts, uns)
					unspentOutsLabel = append(unspentOutsLabel, lab)
					totBtc += UO(uns).Value
					fnd = true
					break
				}
			}

			if !fnd {
				unknownInputs++
				if *verbose {
					fmt.Println(uns.String(), "does not belogn to your wallet - ignore it")
				}
			}

		}
	}
	f.Close()
	fmt.Printf("You have %.8f BTC in %d unspent outputs\n", float64(totBtc)/1e8, len(unspentOuts))
	if unknownInputs > 0 {
		fmt.Printf("WARNING: Some inputs (%d) cannot be spent (-v to print them)\n", unknownInputs)
	}
}
Example #15
0
func main() {
	fmt.Println("Gocoin blockchain downloader version", btc.SourcesTag)
	parse_command_line()
	setup_runtime_vars()

	if !add_ip_str(SeedNode) {
		println("You need to specify IP address of a fast seed node.")
		println("For example run it like this: downloader -s 89.31.102.237")
		return
	}
	load_ips() // other seed nodes

	if len(GocoinHomeDir) > 0 && GocoinHomeDir[len(GocoinHomeDir)-1] != os.PathSeparator {
		GocoinHomeDir += string(os.PathSeparator)
	}
	if Testnet {
		GocoinHomeDir += "tstnet" + string(os.PathSeparator)
		Magic = [4]byte{0x0B, 0x11, 0x09, 0x07}
		DefaultTcpPort = 18333
		GenesisBlock = btc.NewUint256FromString("000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943")
		fmt.Println("Using testnet3")
	} else {
		GocoinHomeDir += "btcnet" + string(os.PathSeparator)
	}
	fmt.Println("GocoinHomeDir:", GocoinHomeDir)

	utils.LockDatabaseDir(GocoinHomeDir)
	defer utils.UnlockDatabaseDir()

	StartTime = time.Now()
	if open_blockchain() {
		fmt.Printf("Blockchain opening aborted\n")
		close_blockchain()
		return
	}
	fmt.Println("Blockchain open in", time.Now().Sub(StartTime))

	go do_usif()

	fmt.Println("Downloading headers from the seed peer", SeedNode)
	download_headers()
	if GlobalExit {
		close_blockchain()
		return
	}

	if DoThePings {
		fmt.Println("Tuning to other peers and trying to find the fastest ones.")
		fmt.Println("Execute command 'g' to continue to block chain download.")
		fmt.Println("Otherwise it will auto-continue after 15 minutes.")
		usif_prompt()
		do_pings()
		fmt.Println("Pings done.")
		usif_prompt()
	}

	var HighestTrustedBlock *btc.Uint256
	if LastTrustedBlock == "all" {
		HighestTrustedBlock = TheBlockChain.BlockTreeEnd.BlockHash
		fmt.Println("Assume all blocks trusted")
	} else if LastTrustedBlock == "auto" {
		if LastBlockHeight > 6 {
			ha := BlocksToGet[LastBlockHeight]
			HighestTrustedBlock = btc.NewUint256(ha[:])
			fmt.Println("Assume last trusted block as", HighestTrustedBlock.String())
		} else {
			fmt.Println("-t=auto ignored since LastBlockHeight is only", LastBlockHeight)
		}
	} else if LastTrustedBlock != "" {
		HighestTrustedBlock = btc.NewUint256FromString(LastTrustedBlock)
	}
	if HighestTrustedBlock != nil {
		for k, h := range BlocksToGet {
			if bytes.Equal(h[:], HighestTrustedBlock.Hash[:]) {
				TrustUpTo = k
				fmt.Println("All the blocks up to", TrustUpTo, "are assumed trusted")
				break
			}
		}
	} else {
		fmt.Println("None of the blocks is to be assumed trusted (it will be very slow).")
	}

	for n := TheBlockChain.BlockTreeEnd; n != nil && n.Height > TheBlockChain.BlockTreeEnd.Height-BSLEN; n = n.Parent {
		blocksize_update(int(n.BlockSize))
	}

	fmt.Println("Downloading blocks - BlocksToGet:", len(BlocksToGet), "  avg_size:", avg_block_size())
	usif_prompt()
	StartTime = time.Now()
	get_blocks()
	fmt.Println("Up to block", TheBlockChain.BlockTreeEnd.Height, "in", time.Now().Sub(StartTime).String())
	close_all_connections()

	close_blockchain()

	return
}
Example #16
0
	"os"
	"os/signal"
	"runtime"
	"runtime/debug"
	"time"
	//"github.com/piotrnar/gocoin/qdb"
	"github.com/piotrnar/gocoin/btc/qdb"
	"github.com/piotrnar/gocoin/tools/utils"
)

var (
	Magic         [4]byte = [4]byte{0xF9, 0xBE, 0xB4, 0xD9}
	StartTime     time.Time
	TheBlockChain *btc.Chain

	GenesisBlock *btc.Uint256 = btc.NewUint256FromString("000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f")
	TrustUpTo    uint32
	GlobalExit   bool

	// CommandLineSwitches
	LastTrustedBlock string // -trust
	GocoinHomeDir    string // -d
	OnlyStoreBlocks  bool   // -b
	MaxNetworkConns  uint   // -n
	GCPerc           int    // -g
	SeedNode         string // -s
	DoThePings       bool   // -p
	MemForBlocks     uint   // -m (in megabytes)
	Testnet          bool   // -t
)
Example #17
0
func dl_payment(w http.ResponseWriter, r *http.Request) {
	if !ipchecker(r) {
		return
	}

	var err string

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

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

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

		wallet.LockBal()
		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)

								totalinput += wallet.MyBalance[j].Value

								if change_addr == nil {
									change_addr = wallet.MyBalance[j].BtcAddr
								}
							}
						}
					}
				}
			}
		}
		wallet.UnlockBal()

		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)

						tout := new(btc.TxOut)
						tout.Value = am
						tout.Pk_script = addr.OutScript()
						tx.TxOut = append(tx.TxOut, tout)

						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
			tout := new(btc.TxOut)
			tout.Value = totalinput - spentsofar
			tout.Pk_script = change_addr.OutScript()
			tx.TxOut = append(tx.TxOut, tout)
		}

		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.Fprintf(fz, "%s # %.8f BTC @ %s, %d confs\n", thisbal[i].TxPrevOut.String(),
				float64(thisbal[i].Value)/1e8, thisbal[i].BtcAddr.StringLab(),
				1+common.Last.Block.Height-thisbal[i].MinedAt)
		}

		// pay_cmd.bat
		if pay_cmd != "" {
			fz, _ = zi.Create(common.CFG.PayCommandName)
			fz.Write([]byte(pay_cmd))
		}

		// Raw 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)
}
Example #18
0
// load the content of the "balance/" folder
func load_balance(showbalance bool) {
	var unknownInputs, multisigInputs int
	f, e := os.Open("balance/unspent.txt")
	if e != nil {
		println(e.Error())
		return
	}
	rd := bufio.NewReader(f)
	for {
		l, _, e := rd.ReadLine()
		if len(l) == 0 && e != nil {
			break
		}
		if l[64] == '-' {
			txid := btc.NewUint256FromString(string(l[:64]))
			rst := strings.SplitN(string(l[65:]), " ", 2)
			vout, _ := strconv.ParseUint(rst[0], 10, 32)
			uns := new(btc.TxPrevOut)
			copy(uns.Hash[:], txid.Hash[:])
			uns.Vout = uint32(vout)
			lab := ""
			if len(rst) > 1 {
				lab = rst[1]
			}

			str := string(l)
			if sti := strings.Index(str, "_StealthC:"); sti != -1 {
				c, e := hex.DecodeString(str[sti+10 : sti+10+64])
				if e != nil {
					fmt.Println("ERROR at stealth", txid.String(), vout, e.Error())
				} else {
					// add a new key to the wallet
					sec := btc.DeriveNextPrivate(first_seed[:], c)
					is_stealth[len(priv_keys)] = true
					priv_keys = append(priv_keys, sec)
					labels = append(labels, lab)
					pub_key := btc.PublicFromPrivate(sec, true)
					publ_addrs = append(publ_addrs, btc.NewAddrFromPubkey(pub_key, btc.AddrVerPubkey(*testnet)))
					compressed_key = append(compressed_key, true) // stealth keys are always compressed
				}
			}

			if _, ok := loadedTxs[txid.Hash]; !ok {
				tf, _ := os.Open("balance/" + txid.String() + ".tx")
				if tf != nil {
					siz, _ := tf.Seek(0, os.SEEK_END)
					tf.Seek(0, os.SEEK_SET)
					buf := make([]byte, siz)
					tf.Read(buf)
					tf.Close()
					th := btc.Sha2Sum(buf)
					if bytes.Equal(th[:], txid.Hash[:]) {
						tx, _ := btc.NewTx(buf)
						if tx != nil {
							loadedTxs[txid.Hash] = tx
						} else {
							println("transaction is corrupt:", txid.String())
						}
					} else {
						println("transaction file is corrupt:", txid.String())
						os.Exit(1)
					}
				} else {
					println("transaction file not found:", txid.String())
					os.Exit(1)
				}
			}

			// Sum up all the balance and check if we have private key for this input
			uo := UO(uns)

			add_it := true

			if !btc.IsP2SH(uo.Pk_script) {
				fnd := false
				for j := range publ_addrs {
					if publ_addrs[j].Owns(uo.Pk_script) {
						fnd = true
						break
					}
				}

				if !fnd {
					if *onlvalid {
						add_it = false
					}
					if showbalance {
						unknownInputs++
						if *verbose {
							ss := uns.String()
							ss = ss[:8] + "..." + ss[len(ss)-12:]
							fmt.Println(ss, "does not belong to your wallet (cannot sign it)")
						}
					}
				}
			} else {
				if *onlvalid {
					add_it = false
				}
				if *verbose {
					ss := uns.String()
					ss = ss[:8] + "..." + ss[len(ss)-12:]
					fmt.Println(ss, "belongs to a multisig address")
				}
				multisigInputs++
			}

			if add_it {
				unspentOuts = append(unspentOuts, uns)
				unspentOutsLabel = append(unspentOutsLabel, lab)
				totBtc += UO(uns).Value
			}
		}
	}
	f.Close()
	fmt.Printf("You have %.8f BTC in %d unspent outputs. %d inputs are multisig type\n",
		float64(totBtc)/1e8, len(unspentOuts), multisigInputs)
	if showbalance {
		if unknownInputs > 0 {
			fmt.Printf("WARNING: Some inputs (%d) cannot be spent with this password (-v to print them)\n", unknownInputs)
		}
	}
}
Example #19
0
File: main.go Project: Bitoy/gocoin
	"time"
	//"github.com/piotrnar/gocoin/qdb"
	"github.com/piotrnar/gocoin/btc/qdb"
	"github.com/piotrnar/gocoin/tools/utils"
)

const (
	TheGenesis = "000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f"
)

var (
	Magic         [4]byte = [4]byte{0xF9, 0xBE, 0xB4, 0xD9}
	StartTime     time.Time
	TheBlockChain *btc.Chain

	GenesisBlock *btc.Uint256 = btc.NewUint256FromString(TheGenesis)
	TrustUpTo    uint32
	GlobalExit   bool

	// CommandLineSwitches
	LastTrustedBlock string // -t
	GocoinHomeDir    string // -d
	OnlyStoreBlocks  bool   // -b
	MaxNetworkConns  uint   // -n
	GCPerc           int    // -g
	SeedNode         string // -s
	DoThePings       bool   // -p
	MemForBlocks     uint   // -m (in megabytes)
)

func parse_command_line() {
Example #20
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 btc.AllUnspentTx
		var pay_cmd string
		var totalinput, spentsofar uint64
		var change_addr *btc.BtcAddr
		var multisig_input []*wallet.MultisigAddr
		var invalid_tx bool

		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.LockBal()
		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.UnlockBal()

		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)

						tout := new(btc.TxOut)
						tout.Value = am
						tout.Pk_script = addr.OutScript()
						if tout.Pk_script != nil {
							tx.TxOut = append(tx.TxOut, tout)
						} else {
							invalid_tx = true
						}

						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
			tout := new(btc.TxOut)
			tout.Value = totalinput - spentsofar
			tout.Pk_script = change_addr.OutScript()
			tx.TxOut = append(tx.TxOut, tout)
		}

		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.Fprintf(fz, "%s # %.8f BTC @ %s, %d confs\n", thisbal[i].TxPrevOut.String(),
				float64(thisbal[i].Value)/1e8, thisbal[i].BtcAddr.StringLab(),
				1+common.Last.Block.Height-thisbal[i].MinedAt)
		}

		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("multi2sign.txt")
			fz.Write([]byte(hex.EncodeToString(tx.Serialize())))

			fz, _ = zi.Create("multi_" + common.CFG.PayCommandName)
			for k, _ := range addrs_to_msign {
				fmt.Fprintln(fz, "wallet -msign", k, "-raw ...")
			}
		} else {
			// Non-multisig transaction ...
			if !invalid_tx {
				fz, _ = zi.Create("tx2sign.txt")
				fz.Write([]byte(hex.EncodeToString(tx.Serialize())))
			}

			if pay_cmd != "" {
				fz, _ = zi.Create(common.CFG.PayCommandName)
				fz.Write([]byte(pay_cmd))
			}
		}

		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)
}
Example #21
0
// load the content of the "balance/" folder
func load_balance(showbalance bool) {
	var unknownInputs, multisigInputs int
	f, e := os.Open("balance/unspent.txt")
	if e != nil {
		println(e.Error())
		return
	}
	rd := bufio.NewReader(f)
	for {
		l, _, e := rd.ReadLine()
		if len(l) == 0 && e != nil {
			break
		}
		if l[64] == '-' {
			txid := btc.NewUint256FromString(string(l[:64]))
			rst := strings.SplitN(string(l[65:]), " ", 2)
			vout, _ := strconv.ParseUint(rst[0], 10, 32)
			uns := new(btc.TxPrevOut)
			copy(uns.Hash[:], txid.Hash[:])
			uns.Vout = uint32(vout)
			lab := ""
			if len(rst) > 1 {
				lab = rst[1]
			}

			if _, ok := loadedTxs[txid.Hash]; !ok {
				tf, _ := os.Open("balance/" + txid.String() + ".tx")
				if tf != nil {
					siz, _ := tf.Seek(0, os.SEEK_END)
					tf.Seek(0, os.SEEK_SET)
					buf := make([]byte, siz)
					tf.Read(buf)
					tf.Close()
					th := btc.Sha2Sum(buf)
					if bytes.Equal(th[:], txid.Hash[:]) {
						tx, _ := btc.NewTx(buf)
						if tx != nil {
							loadedTxs[txid.Hash] = tx
						} else {
							println("transaction is corrupt:", txid.String())
						}
					} else {
						println("transaction file is corrupt:", txid.String())
						os.Exit(1)
					}
				} else {
					println("transaction file not found:", txid.String())
					os.Exit(1)
				}
			}

			unspentOuts = append(unspentOuts, uns)
			unspentOutsLabel = append(unspentOutsLabel, lab)

			// Sum up all the balance and check if we have private key for this input
			uo := UO(uns)
			totBtc += UO(uns).Value

			if !btc.IsP2SH(uo.Pk_script) {
				fnd := false
				for j := range publ_addrs {
					if publ_addrs[j].Owns(uo.Pk_script) {
						fnd = true
						break
					}
				}

				if showbalance && !fnd {
					unknownInputs++
					if *verbose {
						ss := uns.String()
						ss = ss[:8] + "..." + ss[len(ss)-12:]
						fmt.Println(ss, "does not belong to your wallet (cannot sign it)")
					}
				}
			} else {
				if *verbose {
					ss := uns.String()
					ss = ss[:8] + "..." + ss[len(ss)-12:]
					fmt.Println(ss, "belongs to a multisig address")
				}
				multisigInputs++
			}
		}
	}
	f.Close()
	fmt.Printf("You have %.8f BTC in %d unspent outputs. %d inputs are multisig type\n",
		float64(totBtc)/1e8, len(unspentOuts), multisigInputs)
	if showbalance {
		if unknownInputs > 0 {
			fmt.Printf("WARNING: Some inputs (%d) cannot be spent with this password (-v to print them)\n", unknownInputs)
		}
	}
}
Example #22
0
func main() {
	if len(os.Args) < 2 {
		fmt.Println("Specify at least one parameter - a path to the blk0000?.dat files.")
		fmt.Println("By default it should be:", utils.BitcoinHome()+"blocks")
		fmt.Println()
		fmt.Println("If you specify a second parameter, that's where output data will be stored.")
		fmt.Println("Otherwise the output data will go to Gocoin's default data folder.")
		return
	}

	BtcRootDir = RemoveLastSlash(os.Args[1])
	fn := BtcRootDir + string(os.PathSeparator) + "blk00000.dat"
	fmt.Println("Looking for file", fn, "...")
	f, e := os.Open(fn)
	if e != nil {
		println(e.Error())
		os.Exit(1)
	}
	_, e = f.Read(Magic[:])
	f.Close()
	if e != nil {
		println(e.Error())
		os.Exit(1)
	}

	if len(os.Args) > 2 {
		GocoinHomeDir = RemoveLastSlash(os.Args[2]) + string(os.PathSeparator)
	} else {
		GocoinHomeDir = utils.BitcoinHome() + "gocoin" + string(os.PathSeparator)
	}

	if Magic == [4]byte{0x0B, 0x11, 0x09, 0x07} {
		// testnet3
		fmt.Println("There are Testnet3 blocks")
		GenesisBlock = btc.NewUint256FromString("000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943")
		GocoinHomeDir += "tstnet" + string(os.PathSeparator)
	} else if Magic == [4]byte{0xF9, 0xBE, 0xB4, 0xD9} {
		fmt.Println("There are valid Bitcoin blocks")
		GenesisBlock = btc.NewUint256FromString("000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f")
		GocoinHomeDir += "btcnet" + string(os.PathSeparator)
	} else {
		println("blk00000.dat has an unexpected magic")
		os.Exit(1)
	}

	fmt.Println("Importing blockchain data into", GocoinHomeDir, "...")

	if exists(GocoinHomeDir+"blockchain.dat") ||
		exists(GocoinHomeDir+"blockchain.idx") ||
		exists(GocoinHomeDir+"unspent") {
		println("Destination folder contains some database files.")
		println("Either move them somewhere else or delete manually.")
		println("None of the following files/folders must exist before you proceed:")
		println(" *", GocoinHomeDir+"blockchain.dat")
		println(" *", GocoinHomeDir+"blockchain.idx")
		println(" *", GocoinHomeDir+"unspent")
		os.Exit(1)
	}

	import_blockchain(BtcRootDir)
}
Example #23
0
func dl_payment(w http.ResponseWriter, r *http.Request) {
	if !ipchecker(r) {
		return
	}

	var err string

	r.ParseForm()
	if len(r.Form["outcnt"]) == 1 {
		var thisbal btc.AllUnspentTx
		var pay_cmd string

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

		wallet.LockBal()
		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])
							}
						}
					}
				}
			}
		}
		wallet.UnlockBal()

		for i := 1; ; i++ {
			is := fmt.Sprint(i)

			if len(r.Form["adr"+is]) != 1 {
				break
			}

			if len(r.Form["btc"+is]) != 1 {
				break
			}

			if len(r.Form["adr"+is][0]) > 1 {
				addr, er := btc.NewAddrFromString(r.Form["adr"+is][0])
				if er == nil {
					am, er := strconv.ParseFloat(r.Form["btc"+is][0], 64)
					if er == nil && am > 0 {
						if pay_cmd == "" {
							pay_cmd = "wallet -useallinputs -send "
						} else {
							pay_cmd += ","
						}
						pay_cmd += addr.Enc58str + "=" + fmt.Sprintf("%.8f", am)
					} else {
						err = "Incorrect amount (" + r.Form["btc"+is][0] + ") for Output #" + is
						goto error
					}
				} else {
					err = "Incorrect address (" + r.Form["adr"+is][0] + ") for Output #" + is
					goto error
				}
			}
		}

		if pay_cmd != "" && len(r.Form["txfee"]) == 1 {
			pay_cmd += " -fee " + r.Form["txfee"][0]
		}

		if pay_cmd != "" && len(r.Form["change"]) == 1 && len(r.Form["change"][0]) > 1 {
			pay_cmd += " -change " + r.Form["change"][0]
		}

		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.Fprintf(fz, "%s # %.8f BTC @ %s, %d confs\n", thisbal[i].TxPrevOut.String(),
				float64(thisbal[i].Value)/1e8, thisbal[i].BtcAddr.StringLab(),
				1+common.Last.Block.Height-thisbal[i].MinedAt)
		}

		if pay_cmd != "" {
			fz, _ = zi.Create("pay_cmd.txt")
			fz.Write([]byte(pay_cmd))
		}

		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)
}
Example #24
0
func host_init() {
	var e error
	BtcRootDir := utils.BitcoinHome()

	if common.CFG.Datadir == "" {
		common.GocoinHomeDir = BtcRootDir + "gocoin" + string(os.PathSeparator)
	} else {
		common.GocoinHomeDir = common.CFG.Datadir + string(os.PathSeparator)
	}

	if common.CFG.Testnet { // testnet3
		common.GenesisBlock = btc.NewUint256FromString("000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943")
		common.Magic = [4]byte{0x0B, 0x11, 0x09, 0x07}
		common.GocoinHomeDir += "tstnet" + string(os.PathSeparator)
		common.AddrVersion = 0x6f
		BtcRootDir += "testnet3" + string(os.PathSeparator)
		network.AlertPubKey, _ = hex.DecodeString("04302390343f91cc401d56d68b123028bf52e5fca1939df127f63c6467cdf9c8e2c14b61104cf817d0b780da337893ecc4aaff1309e536162dabbdb45200ca2b0a")
		common.MaxPeersNeeded = 100
	} else {
		common.GenesisBlock = btc.NewUint256FromString("000000000019d6689c085ae165831e934ff763ae46a2a6c172b3f1b60a8ce26f")
		common.Magic = [4]byte{0xF9, 0xBE, 0xB4, 0xD9}
		common.GocoinHomeDir += "btcnet" + string(os.PathSeparator)
		common.AddrVersion = 0x00
		network.AlertPubKey, _ = hex.DecodeString("04fc9702847840aaf195de8442ebecedf5b095cdbb9bc716bda9110971b28a49e0ead8564ff0db22209e0374782c093bb899692d524e9d6a6956e7c5ecbcd68284")
		common.MaxPeersNeeded = 1000
	}

	// Lock the folder
	os.MkdirAll(common.GocoinHomeDir, 0770)
	os.MkdirAll(common.GocoinHomeDir+"wallet", 0770)
	LockDatabaseDir()

	fi, e := os.Stat(common.GocoinHomeDir + "blockchain.idx")
	if e != nil {
		os.RemoveAll(common.GocoinHomeDir)
		fmt.Println("You seem to be running Gocoin for the fist time on this PC")
		fi, e = os.Stat(BtcRootDir + "blocks/blk00000.dat")
		if e == nil && fi.Size() > 1024*1024 {
			fmt.Println("There is a database from Satoshi client on your disk...")
			if textui.AskYesNo("Do you want to import this database into Gocoin?") {
				import_blockchain(BtcRootDir + "blocks")
			}
		}
	}

	fmt.Println("Opening blockchain... (Ctrl-C to interrupt)")

	__exit := make(chan bool)
	__done := make(chan bool)
	go func() {
		for {
			select {
			case s := <-killchan:
				fmt.Println(s)
				btc.AbortNow = true
			case <-__exit:
				__done <- true
				return
			}
		}
	}()
	sta := time.Now().UnixNano()
	common.BlockChain = btc.NewChain(common.GocoinHomeDir, common.GenesisBlock, common.FLAG.Rescan)
	sto := time.Now().UnixNano()
	if btc.AbortNow {
		fmt.Printf("Blockchain opening aborted after %.3f seconds\n", float64(sto-sta)/1e9)
		UnlockDatabaseDir()
		os.Exit(1)
	}
	fmt.Printf("Blockchain open in %.3f seconds\n", float64(sto-sta)/1e9)
	common.BlockChain.Unspent.SetTxNotify(wallet.TxNotify)
	common.StartTime = time.Now()
	__exit <- true
	_ = <-__done
}
Example #25
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
}