Beispiel #1
0
func (c *one_net_conn) headers(d []byte) {
	var hdr [81]byte
	b := bytes.NewReader(d)
	cnt, er := btc.ReadVLen(b)
	if er != nil {
		return
	}
	if cnt == 0 /*|| LastBlock.node.Height>=150e3*/ {
		SetAllHeadersDone(true)
		return
	}
	for i := uint64(0); i < cnt; i++ {
		if _, er = b.Read(hdr[:]); er != nil {
			return
		}
		if hdr[80] != 0 {
			fmt.Println(LastBlock.node.Height, "Unexpected value of txn_count")
			continue
		}
		bl, er := btc.NewBlock(hdr[:])
		if er == nil {
			er = chkblock(bl)
			if er != nil {
				fmt.Println(er.Error())
				os.Exit(1)
			}
		} else {
			fmt.Println(LastBlock.node.Height, er.Error())
		}
	}
	//fmt.Println("Height:", LastBlock.node.Height)
}
Beispiel #2
0
// This function is called from a net conn thread
func netBlockReceived(conn *OneConnection, b []byte) {
	bl, e := btc.NewBlock(b)
	if e != nil {
		conn.DoS("BrokenBlock")
		println("NewBlock:", e.Error())
		return
	}

	idx := bl.Hash.BIdx()
	MutexRcv.Lock()
	if rb, got := ReceivedBlocks[idx]; got {
		rb.Cnt++
		MutexRcv.Unlock()
		common.CountSafe("BlockSameRcvd")
		return
	}
	orb := &OneReceivedBlock{Time: time.Now()}
	if bip, ok := conn.GetBlockInProgress[idx]; ok {
		orb.TmDownload = orb.Time.Sub(bip.start)
		conn.Mutex.Lock()
		delete(conn.GetBlockInProgress, idx)
		conn.Mutex.Unlock()
	} else {
		common.CountSafe("UnxpectedBlockRcvd")
	}
	ReceivedBlocks[idx] = orb
	MutexRcv.Unlock()

	NetBlocks <- &BlockRcvd{Conn: conn, Block: bl}
}
Beispiel #3
0
func (ch *Chain) ParseTillBlock(end *BlockTreeNode) {
	var b []byte
	var er error
	var trusted bool

	prv := time.Now().UnixNano()
	for !AbortNow && ch.BlockTreeEnd != end {
		cur := time.Now().UnixNano()
		if cur-prv >= 10e9 {
			fmt.Println("ParseTillBlock ...", ch.BlockTreeEnd.Height, "/", end.Height)
			prv = cur
		}

		nxt := ch.BlockTreeEnd.FindPathTo(end)
		if nxt == nil {
			break
		}

		b, trusted, er = ch.Blocks.BlockGet(nxt.BlockHash)
		if er != nil {
			panic("Db.BlockGet(): " + er.Error())
		}

		bl, er := btc.NewBlock(b)
		if er != nil {
			ch.DeleteBranch(nxt)
			break
		}

		er = bl.BuildTxList()
		if er != nil {
			ch.DeleteBranch(nxt)
			break
		}

		bl.Trusted = trusted

		changes, er := ch.ProcessBlockTransactions(bl, nxt.Height, end.Height)
		if er != nil {
			println("ProcessBlockTransactions", nxt.Height, er.Error())
			ch.DeleteBranch(nxt)
			break
		}
		if !trusted {
			ch.Blocks.BlockTrusted(bl.Hash.Hash[:])
		}

		ch.Unspent.CommitBlockTxs(changes, bl.Hash.Hash[:])

		ch.BlockTreeEnd = nxt
	}

	if !AbortNow && ch.BlockTreeEnd != end {
		end, _ = ch.BlockTreeRoot.FindFarthestNode()
		fmt.Println("ParseTillBlock failed - now go to", end.Height)
		ch.MoveToBlock(end)
	}
	ch.Unspent.Sync()
	ch.Save()
}
Beispiel #4
0
func (ch *Chain) UndoLastBlock() {
	fmt.Println("Undo block", ch.BlockTreeEnd.Height, ch.BlockTreeEnd.BlockHash.String(),
		ch.BlockTreeEnd.BlockSize>>10, "KB")

	raw, _, _ := ch.Blocks.BlockGet(ch.BlockTreeEnd.BlockHash)

	bl, _ := btc.NewBlock(raw)
	bl.BuildTxList()

	ch.Unspent.UndoBlockTxs(bl, ch.BlockTreeEnd.Parent.BlockHash.Hash[:])
	ch.BlockTreeEnd = ch.BlockTreeEnd.Parent
}
Beispiel #5
0
func defrag_db() {
	if (usif.DefragBlocksDB & 1) != 0 {
		qdb.SetDefragPercent(1)
		fmt.Print("Defragmenting UTXO database")
		for {
			if !common.BlockChain.Unspent.Idle() {
				break
			}
			fmt.Print(".")
		}
		fmt.Println("done")
	}

	if (usif.DefragBlocksDB & 2) != 0 {
		fmt.Println("Creating empty database in", common.GocoinHomeDir+"defrag", "...")
		os.RemoveAll(common.GocoinHomeDir + "defrag")
		defragdb := chain.NewBlockDB(common.GocoinHomeDir + "defrag")
		fmt.Println("Defragmenting the database...")
		blk := common.BlockChain.BlockTreeRoot
		for {
			blk = blk.FindPathTo(common.BlockChain.BlockTreeEnd)
			if blk == nil {
				fmt.Println("Database defragmenting finished successfully")
				fmt.Println("To use the new DB, move the two new files to a parent directory and restart the client")
				break
			}
			if (blk.Height & 0xff) == 0 {
				fmt.Printf("%d / %d blocks written (%d%%)\r", blk.Height, common.BlockChain.BlockTreeEnd.Height,
					100*blk.Height/common.BlockChain.BlockTreeEnd.Height)
			}
			bl, trusted, er := common.BlockChain.Blocks.BlockGet(blk.BlockHash)
			if er != nil {
				fmt.Println("FATAL ERROR during BlockGet:", er.Error())
				break
			}
			nbl, er := btc.NewBlock(bl)
			if er != nil {
				fmt.Println("FATAL ERROR during NewBlock:", er.Error())
				break
			}
			nbl.Trusted = trusted
			defragdb.BlockAdd(blk.Height, nbl)
		}
		defragdb.Sync()
		defragdb.Close()
	}
}
Beispiel #6
0
func GetRawTransaction(BlockHeight uint32, txid *btc.Uint256, txf io.Writer) bool {
	// Find the block with the indicated Height in the main tree
	common.BlockChain.BlockIndexAccess.Lock()
	n := common.Last.Block
	if n.Height < BlockHeight {
		println(n.Height, BlockHeight)
		common.BlockChain.BlockIndexAccess.Unlock()
		panic("This should not happen")
	}
	for n.Height > BlockHeight {
		n = n.Parent
	}
	common.BlockChain.BlockIndexAccess.Unlock()

	bd, _, e := common.BlockChain.Blocks.BlockGet(n.BlockHash)
	if e != nil {
		println("BlockGet", n.BlockHash.String(), BlockHeight, e.Error())
		println("This should not happen - please, report a bug.")
		println("You can probably fix it by launching the client with -rescan")
		os.Exit(1)
	}

	bl, e := btc.NewBlock(bd)
	if e != nil {
		println("NewBlock: ", e.Error())
		os.Exit(1)
	}

	e = bl.BuildTxList()
	if e != nil {
		println("BuildTxList:", e.Error())
		os.Exit(1)
	}

	// Find the transaction we need and store it in the file
	for i := range bl.Txs {
		if bl.Txs[i].Hash.Equal(txid) {
			txf.Write(bl.Txs[i].Serialize())
			return true
		}
	}
	return false
}
Beispiel #7
0
func import_blockchain(dir string) {
	BlockDatabase := blockdb.NewBlockDB(dir, Magic)
	chain := chain.NewChain(GocoinHomeDir, GenesisBlock, false)

	var bl *btc.Block
	var er error
	var dat []byte
	var totbytes, perbytes uint64

	chain.DoNotSync = true

	fmt.Println("Be patient while importing Satoshi's database... ")
	start := time.Now().UnixNano()
	prv := start
	for {
		now := time.Now().UnixNano()
		if now-prv >= 10e9 {
			stat(now-start, now-prv, totbytes, perbytes, chain.BlockTreeEnd.Height)
			prv = now // show progress each 10 seconds
			perbytes = 0
		}

		dat, er = BlockDatabase.FetchNextBlock()
		if dat == nil || er != nil {
			println("END of DB file")
			break
		}

		bl, er = btc.NewBlock(dat[:])
		if er != nil {
			println("Block inconsistent:", er.Error())
			break
		}

		bl.Trusted = Trust

		er, _, _ = chain.CheckBlock(bl)

		if er != nil {
			if er.Error() != "Genesis" {
				println("CheckBlock failed:", er.Error())
				os.Exit(1) // Such a thing should not happen, so let's better abort here.
			}
			continue
		}

		er = chain.AcceptBlock(bl)
		if er != nil {
			println("AcceptBlock failed:", er.Error())
			os.Exit(1) // Such a thing should not happen, so let's better abort here.
		}

		totbytes += uint64(len(bl.Raw))
		perbytes += uint64(len(bl.Raw))
	}

	stop := time.Now().UnixNano()
	stat(stop-start, stop-prv, totbytes, perbytes, chain.BlockTreeEnd.Height)

	fmt.Println("Satoshi's database import finished in", (stop-start)/1e9, "seconds")

	fmt.Println("Now saving the new database...")
	chain.Save()
	chain.Close()
	fmt.Println("Database saved. No more imports should be needed.")
}
Beispiel #8
0
func (c *one_net_conn) block(d []byte) {
	atomic.AddUint64(&DlBytesDownloaded, uint64(len(d)))

	BlocksMutex.Lock()
	defer BlocksMutex.Unlock()
	h := btc.NewSha2Hash(d[:80])

	c.Lock()
	c.last_blk_rcvd = time.Now()
	c.Unlock()

	bip := BlocksInProgress[h.Hash]
	if bip == nil || !bip.Conns[c.id] {
		COUNTER("BNOT")
		//fmt.Println(h.String(), "- already received", bip)
		return
	}
	//fmt.Println(h.String(), "- new", bip.Height)
	COUNTER("BYES")

	delete(bip.Conns, c.id)
	c.Lock()
	c.inprogress--
	c.Unlock()
	blocksize_update(len(d))

	bl, er := btc.NewBlock(d)
	if er != nil {
		fmt.Println(c.Ip(), "-", er.Error())
		c.setbroken(true)
		return
	}

	bl.BuildTxList()
	if !bytes.Equal(btc.GetMerkel(bl.Txs), bl.MerkleRoot()) {
		fmt.Println(c.Ip(), " - MerkleRoot mismatch at block", bip.Height)
		c.setbroken(true)
		return
	}

	delete(BlocksToGet, bip.Height)
	delete(BlocksInProgress, h.Hash)
	if len(BlocksInProgress) == 0 {
		EmptyInProgressCnt++
	}

	//println("got-", bip.Height, BlocksComplete+1)
	if BlocksComplete+1 == bip.Height {
		BlocksComplete++
		BlockQueue <- bl
		for {
			bl = BlocksCached[BlocksComplete+1]
			if bl == nil {
				break
			}
			BlocksComplete++
			delete(BlocksCached, BlocksComplete)
			BlocksCachedSize -= uint64(len(bl.Raw))
			BlockQueue <- bl
		}
	} else {
		BlocksCached[bip.Height] = bl
		BlocksCachedSize += uint64(len(d))
	}
}
Beispiel #9
0
func p_miners(w http.ResponseWriter, r *http.Request) {
	if !ipchecker(r) {
		return
	}

	common.ReloadMiners()

	m := make(map[string]omv, 20)
	var om omv
	cnt := 0
	common.Last.Mutex.Lock()
	end := common.Last.Block
	common.Last.Mutex.Unlock()
	var lastts int64
	var diff float64
	var totbts uint64
	var totfees uint64
	current_mid := -1
	now := time.Now().Unix()

	common.LockCfg()
	minerid := common.CFG.Beeps.MinerID
	common.UnlockCfg()

	next_diff_change := 2016 - end.Height%2016

	block_versions := make(map[uint32]uint)

	// bip100
	bip100_voting := make(map[string]uint)
	//var bip100, bip100v uint64
	bip100x := regexp.MustCompile("/BV{0,1}[0-9]+[M]{0,1}/")
	//bip100rx := regexp.MustCompile("/B[0-9]+[M]{0,1}/")

	for ; end != nil; cnt++ {
		if now-int64(end.Timestamp()) > int64(common.CFG.MiningStatHours)*3600 {
			break
		}
		lastts = int64(end.Timestamp())
		bl, _, e := common.BlockChain.Blocks.BlockGet(end.BlockHash)
		if e != nil {
			return
		}

		block, e := btc.NewBlock(bl)
		cbasetx, _ := btc.NewTx(bl[block.TxOffset:])

		block_versions[binary.LittleEndian.Uint32(bl[0:4])]++
		diff += btc.GetDifficulty(end.Bits())
		miner, mid := common.TxMiner(cbasetx)
		if mid == -1 {
			miner = "<i>" + miner + "</i>"
		}
		om = m[miner]
		om.cnt++
		om.bts += uint64(len(bl))
		om.mid = mid

		// Blocks reward
		var rew uint64
		for o := range cbasetx.TxOut {
			rew += cbasetx.TxOut[o].Value
		}
		om.fees += rew - btc.GetBlockReward(end.Height)

		// bip-100
		res := bip100x.Find(cbasetx.TxIn[0].ScriptSig)
		if res != nil {
			bip100_voting[string(res)]++
		}

		m[miner] = om
		if mid != -1 && current_mid == -1 && minerid == string(common.MinerIds[mid].Tag) {
			current_mid = mid
		}
		totbts += uint64(len(bl))
		end = end.Parent
	}

	if cnt == 0 {
		write_html_head(w, r)
		w.Write([]byte(fmt.Sprint("No blocks in last ", common.CFG.MiningStatHours, " hours")))
		write_html_tail(w)
		return
	}

	srt := make(onemiernstat, len(m))
	i := 0
	for k, v := range m {
		srt[i].name = k
		srt[i].omv = v
		i++
	}
	sort.Sort(srt)

	mnrs := load_template("miners.html")
	onerow := load_template("miners_row.html")

	diff /= float64(cnt)
	bph := float64(cnt) / float64(common.CFG.MiningStatHours)
	hrate := bph / 6 * diff * 7158278.826667
	mnrs = strings.Replace(mnrs, "{MINING_HOURS}", fmt.Sprint(common.CFG.MiningStatHours), 1)
	mnrs = strings.Replace(mnrs, "{BLOCKS_COUNT}", fmt.Sprint(cnt), 1)
	mnrs = strings.Replace(mnrs, "{FIRST_BLOCK_TIME}", time.Unix(lastts, 0).Format("2006-01-02 15:04:05"), 1)
	mnrs = strings.Replace(mnrs, "{AVG_BLOCKS_PER_HOUR}", fmt.Sprintf("%.2f", bph), 1)
	mnrs = strings.Replace(mnrs, "{AVG_DIFFICULTY}", common.NumberToString(diff), 1)
	mnrs = strings.Replace(mnrs, "{AVG_HASHDATE}", common.HashrateToString(hrate), 1)
	mnrs = strings.Replace(mnrs, "{AVG_BLOCKSIZE}", fmt.Sprintf("%.1fKB", float64(totbts)/float64(cnt)/1000), 1)
	mnrs = strings.Replace(mnrs, "{DIFF_CHANGE_IN}", fmt.Sprint(next_diff_change), 1)
	mnrs = strings.Replace(mnrs, "{MINER_MON_IDX}", fmt.Sprint(current_mid), 1)

	for i := range srt {
		s := onerow
		s = strings.Replace(s, "{MINER_NAME}", srt[i].name, 1)
		s = strings.Replace(s, "{BLOCK_COUNT}", fmt.Sprint(srt[i].cnt), 1)
		s = strings.Replace(s, "{TOTAL_PERCENT}", fmt.Sprintf("%.0f", 100*float64(srt[i].cnt)/float64(cnt)), 1)
		s = strings.Replace(s, "{MINER_HASHRATE}", common.HashrateToString(hrate*float64(srt[i].cnt)/float64(cnt)), 1)
		s = strings.Replace(s, "{AVG_BLOCK_SIZE}", fmt.Sprintf("%.1fKB", float64(srt[i].bts)/float64(srt[i].cnt)/1000), 1)
		s = strings.Replace(s, "{MINER_ID}", fmt.Sprint(srt[i].mid), -1)
		s = strings.Replace(s, "<!--TOTAL_FEES-->", btc.UintToBtc(srt[i].fees), -1)
		s = strings.Replace(s, "<!--FEE_PER_BYTE-->", fmt.Sprint(srt[i].fees/srt[i].bts), -1)
		mnrs = templ_add(mnrs, "<!--MINER_ROW-->", s)
		totfees += srt[i].fees
	}

	mnrs = strings.Replace(mnrs, "<!--TOTAL_MINING_FEES-->", btc.UintToBtc(totfees), 1)
	mnrs = strings.Replace(mnrs, "<!--AVERAGE_FEE_PER_BYTE-->", fmt.Sprint(totfees/totbts), 1)

	var bv string
	for k, v := range block_versions {
		if bv != "" {
			bv += " + "
		}
		bv += fmt.Sprintf("%dx%d", v, k)
	}
	mnrs = strings.Replace(mnrs, "<!--BLOCK_VERSIONS-->", bv, 1)

	// bip100
	bv = ""
	for k, v := range bip100_voting {
		if bv != "" {
			bv += " + "
		}
		bv += fmt.Sprintf("%sx%d", k, v)
	}

	mnrs = strings.Replace(mnrs, "<!--BLOCKSIZE_VOTES-->", bv, 1)

	write_html_head(w, r)
	w.Write([]byte(mnrs))
	write_html_tail(w)
}
Beispiel #10
0
func p_blocks(w http.ResponseWriter, r *http.Request) {
	if !ipchecker(r) {
		return
	}

	blks := load_template("blocks.html")
	onerow := load_template("blocks_row.html")

	common.Last.Mutex.Lock()
	end := common.Last.Block
	common.Last.Mutex.Unlock()

	for cnt := uint32(0); end != nil && cnt < atomic.LoadUint32(&common.CFG.WebUI.ShowBlocks); cnt++ {
		bl, _, e := common.BlockChain.Blocks.BlockGet(end.BlockHash)
		if e != nil {
			return
		}
		block, e := btc.NewBlock(bl)
		if e != nil {
			return
		}
		cbasetx, _ := btc.NewTx(bl[block.TxOffset:])
		s := onerow

		s = strings.Replace(s, "{BLOCK_NUMBER}", fmt.Sprint(end.Height), 1)
		s = strings.Replace(s, "{BLOCK_TIMESTAMP}",
			time.Unix(int64(block.BlockTime()), 0).Format("Mon 15:04:05"), 1)
		s = strings.Replace(s, "{BLOCK_HASH}", end.BlockHash.String(), 1)
		s = strings.Replace(s, "{BLOCK_TXS}", fmt.Sprint(block.TxCount), 1)
		s = strings.Replace(s, "{BLOCK_SIZE}", fmt.Sprintf("%.1f", float64(len(bl))/1000), 1)
		var rew uint64
		for o := range cbasetx.TxOut {
			rew += cbasetx.TxOut[o].Value
		}
		s = strings.Replace(s, "<!--BLOCK_VERSION-->", fmt.Sprint(block.Version()), 1)
		s = strings.Replace(s, "{BLOCK_REWARD}", fmt.Sprintf("%.2f", float64(rew)/1e8), 1)
		mi, _ := common.TxMiner(cbasetx)
		if len(mi) > 10 {
			mi = mi[:10]
		}
		s = strings.Replace(s, "{BLOCK_MINER}", mi, 1)

		network.MutexRcv.Lock()
		rb := network.ReceivedBlocks[end.BlockHash.BIdx()]
		network.MutexRcv.Unlock()

		if rb.TmDownload != 0 {
			s = strings.Replace(s, "{TIME_TO_DOWNLOAD}", fmt.Sprint(int(rb.TmDownload/time.Millisecond)), 1)
		} else {
			s = strings.Replace(s, "{TIME_TO_DOWNLOAD}", "", 1)
		}
		if rb.TmAccept != 0 {
			s = strings.Replace(s, "{TIME_TO_ACCEPT}", fmt.Sprint(int(rb.TmAccept/time.Millisecond)), 1)
		} else {
			s = strings.Replace(s, "{TIME_TO_ACCEPT}", "", 1)
		}
		if rb.Cnt != 0 {
			s = strings.Replace(s, "{WASTED_BLOCKS}", fmt.Sprint(rb.Cnt), 1)
		} else {
			s = strings.Replace(s, "{WASTED_BLOCKS}", "", 1)
		}
		s = strings.Replace(s, "{TIME_RECEIVED}", rb.Time.Format("15:04:05"), 1)

		blks = templ_add(blks, "<!--BLOCK_ROW-->", s)

		end = end.Parent
	}

	write_html_head(w, r)
	w.Write([]byte(blks))
	write_html_tail(w)
}
Beispiel #11
0
func do_mining(s string) {
	var totbtc, hrs uint64
	if s != "" {
		hrs, _ = strconv.ParseUint(s, 10, 64)
	}
	if hrs == 0 {
		hrs = uint64(common.CFG.MiningStatHours)
	}
	fmt.Println("Looking back", hrs, "hours...")
	lim := uint32(time.Now().Add(-time.Hour * time.Duration(hrs)).Unix())
	common.Last.Mutex.Lock()
	bte := common.Last.Block
	end := bte
	common.Last.Mutex.Unlock()
	cnt, diff := 0, float64(0)
	tot_blocks, tot_blocks_len := 0, 0

	bip100_voting := make(map[string]uint)
	bip100x := regexp.MustCompile("/BV{0,1}[0-9]+[M]{0,1}/")

	for end.Timestamp() >= lim {
		bl, _, e := common.BlockChain.Blocks.BlockGet(end.BlockHash)
		if e != nil {
			println(cnt, e.Error())
			return
		}
		block, e := btc.NewBlock(bl)
		if e != nil {
			println("btc.NewBlock failed", e.Error())
			return
		}

		bt, _ := btc.NewBlock(bl)
		cbasetx, cbtxlen := btc.NewTx(bl[bt.TxOffset:])

		tot_blocks++
		tot_blocks_len += len(bl)
		diff += btc.GetDifficulty(block.Bits())
		common.LockCfg()
		if common.CFG.Beeps.MinerID != "" &&
			bytes.Contains(bl[bt.TxOffset:bt.TxOffset+cbtxlen], []byte(common.CFG.Beeps.MinerID)) {
			block.BuildTxList()
			totbtc += block.Txs[0].TxOut[0].Value
			cnt++
			fmt.Printf("%4d) %6d %s %s  %5.2f => %5.2f BTC total, %d txs, %.1f KB\n",
				cnt, end.Height, end.BlockHash.String(),
				time.Unix(int64(end.Timestamp()), 0).Format("2006-01-02 15:04:05"),
				float64(block.Txs[0].TxOut[0].Value)/1e8, float64(totbtc)/1e8,
				len(block.Txs), float64(len(bl))/1e3)
		}
		common.UnlockCfg()

		res := bip100x.Find(cbasetx.TxIn[0].ScriptSig)
		if res != nil {
			bip100_voting[string(res)]++
			nimer, _ := common.TxMiner(cbasetx)
			fmt.Println("      block", end.Height, "by", nimer, "voting", string(res), " total:", bip100_voting[string(res)])
		}

		end = end.Parent
	}
	if tot_blocks == 0 {
		fmt.Println("There are no blocks from the last", hrs, "hour(s)")
		return
	}
	diff /= float64(tot_blocks)
	common.LockCfg()
	if common.CFG.Beeps.MinerID != "" {
		fmt.Printf("%.8f BTC mined by %s, in %d blocks for the last %d hours\n",
			float64(totbtc)/1e8, common.CFG.Beeps.MinerID, cnt, hrs)
	}
	common.UnlockCfg()
	if cnt > 0 {
		fmt.Printf("Projected weekly income : %.0f BTC,  estimated hashrate : %s\n",
			7*24*float64(totbtc)/float64(hrs)/1e8,
			common.HashrateToString(float64(cnt)/float64(6*hrs)*diff*7158278.826667))
	}
	bph := float64(tot_blocks) / float64(hrs)
	fmt.Printf("Total network hashrate : %s @ average diff %.0f  (%.2f bph)\n",
		common.HashrateToString(bph/6*diff*7158278.826667), diff, bph)
	fmt.Printf("Average block size was %.1f KB,  next difficulty change in %d blocks\n",
		float64(tot_blocks_len/tot_blocks)/1e3, 2016-bte.Height%2016)
}