Example #1
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 #2
0
func main() {
	fmt.Println("Gocoin FetchBalance version", btc.SourcesTag)

	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)
		}
	}
}