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()
}
// 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 (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)
}
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 BlocksMiner(bl []byte) (string, int) {
for i, m := range MinerIds {
if MinedBy(bl, m.Tag) {
return m.Name, i
}
}
bt, _ := btc.NewBlock(bl)
cbtx, _ := btc.NewTx(bl[bt.TxOffset:])
adr := btc.NewAddrFromPkScript(cbtx.TxOut[0].Pk_script, Testnet)
if adr != nil {
return adr.String(), -1
}
return "", -1
}
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 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_REWARD}", fmt.Sprintf("%.2f", float64(rew)/1e8), 1)
mi, _ := common.BlocksMiner(bl)
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)
}
blks = templ_add(blks, "<!--BLOCK_ROW-->", s)
end = end.Parent
}
write_html_head(w, r)
w.Write([]byte(blks))
write_html_tail(w)
}
func import_blockchain(dir string) {
trust := !textui.AskYesNo("Do you want to verify scripts while importing (will be slow)?")
BlockDatabase := blockdb.NewBlockDB(dir, common.Magic)
chain := chain.NewChain(common.GocoinHomeDir, common.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.Sync()
chain.Save()
chain.Close()
fmt.Println("Database saved. No more imports should be needed.")
fmt.Println("It is advised to close and restart the node now, to free some mem.")
}
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 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
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
}
tot_blocks++
tot_blocks_len += len(bl)
diff += btc.GetDifficulty(block.Bits())
if common.MinedByUs(bl) {
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)
}
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)
}