Example #1
0
func main() {
	var dir string

	if len(os.Args) > 1 {
		dir = os.Args[1]
	} else {
		dir = sys.BitcoinHome() + "gocoin" + string(os.PathSeparator) + "btcnet" + string(os.PathSeparator) + "peers3"
	}

	db, er := qdb.NewDB(dir, true)

	if er != nil {
		println(er.Error())
		os.Exit(1)
	}

	println(db.Count(), "peers in databse", dir)
	if db.Count() == 0 {
		return
	}

	tmp := make(manyPeers, db.Count())
	cnt := 0
	db.Browse(func(k qdb.KeyType, v []byte) uint32 {
		np := utils.NewPeer(v)
		if !sys.ValidIp4(np.Ip4[:]) {
			return 0
		}
		if cnt < len(tmp) {
			tmp[cnt] = np
			cnt++
		}
		return 0
	})

	sort.Sort(tmp[:cnt])
	for cnt = 0; cnt < len(tmp) && cnt < 2500; cnt++ {
		ad := tmp[cnt]
		fmt.Printf("%3d) %16s   %5d  - seen %5d min ago\n", cnt+1,
			fmt.Sprintf("%d.%d.%d.%d", ad.Ip4[0], ad.Ip4[1], ad.Ip4[2], ad.Ip4[3]),
			ad.Port, (time.Now().Unix()-int64(ad.Time))/60)
	}
}
Example #2
0
func parse_command_line() {
	GocoinHomeDir = sys.BitcoinHome() + "gocoin" + string(os.PathSeparator)

	flag.BoolVar(&OnlyStoreBlocks, "b", false, "Only store blocks, without parsing them into UTXO database")
	flag.BoolVar(&Testnet, "t", false, "Use Testnet3")
	flag.StringVar(&GocoinHomeDir, "d", GocoinHomeDir, "Specify the home directory")
	flag.StringVar(&LastTrustedBlock, "trust", "auto", "Specify the highest trusted block hash (use \"all\" for all)")
	flag.StringVar(&SeedNode, "s", "", "Specify IP of the node to fetch headers from")
	flag.UintVar(&MaxNetworkConns, "n", 10, "Set maximum number of network connections for chain download")
	flag.IntVar(&GCPerc, "g", 0, "Set waste percentage treshold for Go's garbage collector")

	flag.UintVar(&MemForBlocks, "m", 64, "Set memory buffer for cached block data (value in megabytes)")

	var help bool
	flag.BoolVar(&help, "h", false, "Show this help")
	flag.Parse()
	if help {
		flag.PrintDefaults()
		os.Exit(0)
	}

	MemForBlocks <<= 20 // Convert megabytes to bytes
}
Example #3
0
func host_init() {
	var e error
	BtcRootDir := sys.BitcoinHome()

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

	common.Testnet = common.CFG.Testnet // So chaging this value would will only affect the behaviour after restart
	if common.CFG.Testnet {             // testnet3
		common.GenesisBlock = btc.NewUint256FromString("000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943")
		common.Magic = [4]byte{0x0B, 0x11, 0x09, 0x07}
		common.GocoinHomeDir += "tstnet" + string(os.PathSeparator)
		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)
		network.AlertPubKey, _ = hex.DecodeString("04fc9702847840aaf195de8442ebecedf5b095cdbb9bc716bda9110971b28a49e0ead8564ff0db22209e0374782c093bb899692d524e9d6a6956e7c5ecbcd68284")
		common.MaxPeersNeeded = 1000
	}

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

	fi, e := os.Stat(common.GocoinHomeDir + "blockchain.dat")
	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")
			}
		}
	}

	// Create default wallet file if does not exist
	default_wallet_fn := common.GocoinHomeDir + "wallet" + string(os.PathSeparator) + wallet.DefaultFileName
	fi, _ = os.Stat(default_wallet_fn)
	if fi == nil || fi.IsDir() {
		fmt.Println(default_wallet_fn, "not found")

		old_wallet_location := common.GocoinHomeDir + "wallet.txt"
		// If there is wallet.txt rename it to default.
		fi, _ := os.Stat(old_wallet_location)
		if fi != nil && !fi.IsDir() {
			fmt.Println("Taking wallet.txt as", default_wallet_fn)
			os.Rename(old_wallet_location, default_wallet_fn)
		} else {
			fmt.Println("Creating empty default wallet at", default_wallet_fn)
			ioutil.WriteFile(default_wallet_fn, []byte(fmt.Sprintln("# Put your wallet's public addresses here")), 0660)
		}
	}

	// cache the current balance of all the addresses from the current wallet files
	wallet.LoadAllWallets()

	fmt.Println("Loading UTXO database while checking balance of", len(wallet.MyWallet.Addrs),
		"addresses... (press Ctrl-C to interrupt)")

	__exit := make(chan bool)
	__done := make(chan bool)
	go func() {
		for {
			select {
			case s := <-killchan:
				fmt.Println(s)
				chain.AbortNow = true
			case <-__exit:
				__done <- true
				return
			}
		}
	}()

	ext := &chain.NewChanOpts{NotifyTxAdd: wallet.TxNotifyAdd,
		NotifyTxDel: wallet.TxNotifyDel, LoadWalk: wallet.NewUTXO}

	sta := time.Now().UnixNano()
	common.BlockChain = chain.NewChainExt(common.GocoinHomeDir, common.GenesisBlock, common.FLAG.Rescan, ext)
	sto := time.Now().UnixNano()
	if chain.AbortNow {
		fmt.Printf("Blockchain opening aborted after %.3f seconds\n", float64(sto-sta)/1e9)
		common.BlockChain.Close()
		sys.UnlockDatabaseDir()
		os.Exit(1)
	}
	wallet.ChainInitDone()
	al, sy := sys.MemUsed()
	fmt.Printf("Blockchain open in %.3f seconds.  %d + %d MB of RAM used (%d)\n",
		float64(sto-sta)/1e9, al>>20, qdb.ExtraMemoryConsumed>>20, sy>>20)
	common.StartTime = time.Now()
	__exit <- true
	_ = <-__done

	// ... and now load the dafault wallet
	wallet.LoadWallet(default_wallet_fn)
	if wallet.MyWallet != nil {
		wallet.UpdateBalance()
		fmt.Print(wallet.DumpBalance(wallet.MyBalance, nil, false, true))
	}
}
Example #4
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:", sys.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 = sys.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)
}