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)
}
// 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}
}
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()
}
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
}
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()
}
}
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
}
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.")
}
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))
}
}
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)
}
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)
}
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)
}