func (c *OneConnection) GetBlockData(h []byte) {
var b [1 + 4 + 32]byte
b[0] = 1 // One inv
b[1] = 2 // Block
copy(b[5:37], h[:32])
if common.DebugLevel > 1 {
println("GetBlockData", btc.NewUint256(h).String())
}
bh := btc.NewUint256(h)
c.Mutex.Lock()
c.GetBlockInProgress[bh.BIdx()] = &oneBlockDl{hash: bh, start: time.Now()}
c.Mutex.Unlock()
c.SendRawMsg("getdata", b[:])
}
func xml_balance(w http.ResponseWriter, r *http.Request) {
if !ipchecker(r) {
return
}
w.Header()["Content-Type"] = []string{"text/xml"}
w.Write([]byte("<unspent>"))
wallet.BalanceMutex.Lock()
for i := range wallet.MyBalance {
w.Write([]byte("<output>"))
fmt.Fprint(w, "<txid>", btc.NewUint256(wallet.MyBalance[i].TxPrevOut.Hash[:]).String(), "</txid>")
fmt.Fprint(w, "<vout>", wallet.MyBalance[i].TxPrevOut.Vout, "</vout>")
fmt.Fprint(w, "<value>", wallet.MyBalance[i].Value, "</value>")
fmt.Fprint(w, "<inblock>", wallet.MyBalance[i].MinedAt, "</inblock>")
fmt.Fprint(w, "<blocktime>", get_block_time(wallet.MyBalance[i].MinedAt), "</blocktime>")
fmt.Fprint(w, "<addr>", wallet.MyBalance[i].DestAddr(), "</addr>")
fmt.Fprint(w, "<addrorg>", wallet.MyBalance[i].BtcAddr.String(), "</addrorg>")
fmt.Fprint(w, "<wallet>", html.EscapeString(wallet.MyBalance[i].BtcAddr.Extra.Wallet), "</wallet>")
fmt.Fprint(w, "<label>", html.EscapeString(wallet.MyBalance[i].BtcAddr.Extra.Label), "</label>")
fmt.Fprint(w, "<virgin>", fmt.Sprint(wallet.MyBalance[i].BtcAddr.Extra.Virgin), "</virgin>")
w.Write([]byte("</output>"))
}
wallet.BalanceMutex.Unlock()
w.Write([]byte("</unspent>"))
}
func init() {
rd, _ := hex.DecodeString("0100000001b14bdcbc3e01bdaad36cc08e81e69c82e1060bc14e518db2b49aa43ad90ba26000000000490047304402203f16c6f40162ab686621ef3000b04e75418a0c0cb2d8aebeac894ae360ac1e780220ddc15ecdfc3507ac48e1681a33eb60996631bf6bf5bc0a0682c4db743ce7ca2b01ffffffff0140420f00000000001976a914660d4ef3a743e3e696ad990364e555c271ad504b88ac00000000")
dummy_tx, _ := btc.NewTx(rd)
dummy_tx.Size = uint32(len(rd))
ha := btc.Sha2Sum(rd)
dummy_tx.Hash = btc.NewUint256(ha[:])
}
func DecodeTx(tx *btc.Tx) (s string, missinginp bool, totinp, totout uint64, e error) {
s += fmt.Sprintln("Transaction details (for your information):")
s += fmt.Sprintln(len(tx.TxIn), "Input(s):")
for i := range tx.TxIn {
s += fmt.Sprintf(" %3d %s", i, tx.TxIn[i].Input.String())
var po *btc.TxOut
inpid := btc.NewUint256(tx.TxIn[i].Input.Hash[:])
if txinmem, ok := network.TransactionsToSend[inpid.BIdx()]; ok {
s += fmt.Sprint(" mempool")
if int(tx.TxIn[i].Input.Vout) >= len(txinmem.TxOut) {
s += fmt.Sprintf(" - Vout TOO BIG (%d/%d)!", int(tx.TxIn[i].Input.Vout), len(txinmem.TxOut))
} else {
po = txinmem.TxOut[tx.TxIn[i].Input.Vout]
}
} else {
po, _ = common.BlockChain.Unspent.UnspentGet(&tx.TxIn[i].Input)
if po != nil {
s += fmt.Sprintf("%8d", po.BlockHeight)
}
}
if po != nil {
ok := script.VerifyTxScript(tx.TxIn[i].ScriptSig, po.Pk_script, i, tx, true)
if !ok {
s += fmt.Sprintln("\nERROR: The transacion does not have a valid signature.")
e = errors.New("Invalid signature")
return
}
totinp += po.Value
ads := "???"
if ad := btc.NewAddrFromPkScript(po.Pk_script, common.Testnet); ad != nil {
ads = ad.String()
}
s += fmt.Sprintf(" %15.8f BTC @ %s\n", float64(po.Value)/1e8, ads)
} else {
s += fmt.Sprintln(" - UNKNOWN INPUT")
missinginp = true
}
}
s += fmt.Sprintln(len(tx.TxOut), "Output(s):")
for i := range tx.TxOut {
totout += tx.TxOut[i].Value
adr := btc.NewAddrFromPkScript(tx.TxOut[i].Pk_script, common.Testnet)
if adr != nil {
s += fmt.Sprintf(" %15.8f BTC to adr %s\n", float64(tx.TxOut[i].Value)/1e8, adr.String())
} else {
s += fmt.Sprintf(" %15.8f BTC to scr %s\n", float64(tx.TxOut[i].Value)/1e8, hex.EncodeToString(tx.TxOut[i].Pk_script))
}
}
if missinginp {
s += fmt.Sprintln("WARNING: There are missing inputs and we cannot calc input BTC amount.")
s += fmt.Sprintln("If there is somethign wrong with this transaction, you can loose money...")
} else {
s += fmt.Sprintf("All OK: %.8f BTC in -> %.8f BTC out, with %.8f BTC fee\n", float64(totinp)/1e8,
float64(totout)/1e8, float64(totinp-totout)/1e8)
}
return
}
// This function either appends a new block at the end of the existing chain
// in which case it also applies all the transactions to the unspent database.
// If the block does is not the heighest, it is added to the chain, but maked
// as an orphan - its transaction will be verified only if the chain would swap
// to its branch later on.
func (ch *Chain) AcceptBlock(bl *btc.Block) (e error) {
prevblk, ok := ch.BlockIndex[btc.NewUint256(bl.ParentHash()).BIdx()]
if !ok {
panic("This should not happen")
}
// create new BlockTreeNode
cur := new(BlockTreeNode)
cur.BlockHash = bl.Hash
cur.Parent = prevblk
cur.Height = prevblk.Height + 1
cur.BlockSize = uint32(len(bl.Raw))
cur.TxCount = uint32(bl.TxCount)
copy(cur.BlockHeader[:], bl.Raw[:80])
// Add this block to the block index
ch.BlockIndexAccess.Lock()
prevblk.addChild(cur)
ch.BlockIndex[cur.BlockHash.BIdx()] = cur
ch.BlockIndexAccess.Unlock()
if ch.BlockTreeEnd == prevblk {
// The head of out chain - apply the transactions
var changes *BlockChanges
changes, e = ch.ProcessBlockTransactions(bl, cur.Height, bl.LastKnownHeight)
if e != nil {
// ProcessBlockTransactions failed, so trash the block.
println("ProcessBlockTransactions ", cur.BlockHash.String(), cur.Height, e.Error())
ch.BlockIndexAccess.Lock()
cur.Parent.delChild(cur)
delete(ch.BlockIndex, cur.BlockHash.BIdx())
ch.BlockIndexAccess.Unlock()
} else {
// ProcessBlockTransactions succeeded, so save the block as "trusted".
bl.Trusted = true
ch.Blocks.BlockAdd(cur.Height, bl)
// Apply the block's trabnsactions to the unspent database:
ch.Unspent.CommitBlockTxs(changes, bl.Hash.Hash[:])
if !ch.DoNotSync {
ch.Blocks.Sync()
}
ch.BlockTreeEnd = cur // Advance the head
}
} else {
// The block's parent is not the current head of the chain...
// Save the block, though do not makt it as "trusted" just yet
ch.Blocks.BlockAdd(cur.Height, bl)
// If it has a bigger height than the current head,
// ... move the coin state into a new branch.
if cur.Height > ch.BlockTreeEnd.Height {
ch.MoveToBlock(cur)
}
}
return
}
func output_tx_xml(w http.ResponseWriter, id string) {
txid := btc.NewUint256FromString(id)
w.Write([]byte("<tx>"))
fmt.Fprint(w, "<id>", id, "</id>")
if t2s, ok := network.TransactionsToSend[txid.BIdx()]; ok {
w.Write([]byte("<status>OK</status>"))
tx := t2s.Tx
w.Write([]byte("<inputs>"))
for i := range tx.TxIn {
w.Write([]byte("<input>"))
var po *btc.TxOut
inpid := btc.NewUint256(tx.TxIn[i].Input.Hash[:])
if txinmem, ok := network.TransactionsToSend[inpid.BIdx()]; ok {
if int(tx.TxIn[i].Input.Vout) < len(txinmem.TxOut) {
po = txinmem.TxOut[tx.TxIn[i].Input.Vout]
}
} else {
po, _ = common.BlockChain.Unspent.UnspentGet(&tx.TxIn[i].Input)
}
if po != nil {
ok := script.VerifyTxScript(tx.TxIn[i].ScriptSig, po.Pk_script, i, tx, true)
if !ok {
w.Write([]byte("<status>Script FAILED</status>"))
} else {
w.Write([]byte("<status>OK</status>"))
}
fmt.Fprint(w, "<value>", po.Value, "</value>")
ads := "???"
if ad := btc.NewAddrFromPkScript(po.Pk_script, common.Testnet); ad != nil {
ads = ad.String()
}
fmt.Fprint(w, "<addr>", ads, "</addr>")
fmt.Fprint(w, "<block>", po.BlockHeight, "</block>")
} else {
w.Write([]byte("<status>UNKNOWN INPUT</status>"))
}
w.Write([]byte("</input>"))
}
w.Write([]byte("</inputs>"))
w.Write([]byte("<outputs>"))
for i := range tx.TxOut {
w.Write([]byte("<output>"))
fmt.Fprint(w, "<value>", tx.TxOut[i].Value, "</value>")
adr := btc.NewAddrFromPkScript(tx.TxOut[i].Pk_script, common.Testnet)
if adr != nil {
fmt.Fprint(w, "<addr>", adr.String(), "</addr>")
} else {
fmt.Fprint(w, "<addr>", "scr:"+hex.EncodeToString(tx.TxOut[i].Pk_script), "</addr>")
}
w.Write([]byte("</output>"))
}
w.Write([]byte("</outputs>"))
} else {
w.Write([]byte("<status>Not found</status>"))
}
w.Write([]byte("</tx>"))
}
// Handle tx-inv notifications
func (c *OneConnection) TxInvNotify(hash []byte) {
if NeedThisTx(btc.NewUint256(hash), nil) {
var b [1 + 4 + 32]byte
b[0] = 1 // One inv
b[1] = 1 // Tx
copy(b[5:37], hash)
c.SendRawMsg("getdata", b[:])
}
}
// Call it only from the Chain thread
func DumpBalance(mybal chain.AllUnspentTx, utxt *os.File, details, update_balance bool) (s string) {
var sum uint64
BalanceMutex.Lock()
for i := range mybal {
sum += mybal[i].Value
if details {
if i < 100 {
s += fmt.Sprintf("%7d %s\n", 1+common.Last.Block.Height-mybal[i].MinedAt,
mybal[i].String())
} else if i == 100 {
s += fmt.Sprintln("List of unspent outputs truncated to 100 records")
}
}
// update the balance/ folder
if utxt != nil {
po, e := common.BlockChain.Unspent.UnspentGet(&mybal[i].TxPrevOut)
if e != nil {
println("UnspentGet:", 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)
}
txid := btc.NewUint256(mybal[i].TxPrevOut.Hash[:])
// Store the unspent line in balance/unspent.txt
fmt.Fprintln(utxt, mybal[i].UnspentTextLine())
// store the entire transactiojn in balance/<txid>.tx
fn := "balance/" + txid.String()[:64] + ".tx"
txf, _ := os.Open(fn)
if txf == nil {
// Do it only once per txid
txf, _ = os.Create(fn)
if txf == nil {
println("Cannot create ", fn)
os.Exit(1)
}
GetRawTransaction(po.BlockHeight, txid, txf)
}
txf.Close()
}
}
if update_balance {
LastBalance = sum
}
BalanceMutex.Unlock()
s += fmt.Sprintf("Total balance: %.8f BTC in %d unspent outputs\n", float64(sum)/1e8, len(mybal))
if utxt != nil {
utxt.Close()
}
return
}
func baned_txs(par string) {
fmt.Println("Rejected transactions:")
cnt := 0
network.TxMutex.Lock()
for k, v := range network.TransactionsRejected {
cnt++
fmt.Println("", cnt, btc.NewUint256(k[:]).String(), "-", v.Size, "bytes",
"-", v.Reason, "-", time.Now().Sub(v.Time).String(), "ago")
}
network.TxMutex.Unlock()
}
func send_all_tx(par string) {
network.TxMutex.Lock()
for k, v := range network.TransactionsToSend {
if v.Own != 0 {
cnt := network.NetRouteInv(1, btc.NewUint256(k[:]), nil)
v.Invsentcnt += cnt
fmt.Println("INV for TxID", v.Hash.String(), "sent to", cnt, "node(s)")
}
}
network.TxMutex.Unlock()
}
// Loads block index from the disk
func (ch *Chain) loadBlockIndex() {
ch.BlockIndex = make(map[[btc.Uint256IdxLen]byte]*BlockTreeNode, BlockMapInitLen)
ch.BlockTreeRoot = new(BlockTreeNode)
ch.BlockTreeRoot.BlockHash = ch.Genesis
ch.BlockIndex[ch.Genesis.BIdx()] = ch.BlockTreeRoot
ch.Blocks.LoadBlockIndex(ch, nextBlock)
tlb := ch.Unspent.LastBlockHash
//println("Building tree from", len(ch.BlockIndex), "nodes")
for _, v := range ch.BlockIndex {
if AbortNow {
return
}
if v == ch.BlockTreeRoot {
// skip root block (should be only one)
continue
}
par, ok := ch.BlockIndex[btc.NewUint256(v.BlockHeader[4:36]).BIdx()]
if !ok {
panic(v.BlockHash.String() + " has no Parent " + btc.NewUint256(v.BlockHeader[4:36]).String())
}
/*if par.Height+1 != v.Height {
panic("height mismatch")
}*/
v.Parent = par
v.Parent.addChild(v)
}
if tlb == nil {
//println("No last block - full rescan will be needed")
ch.BlockTreeEnd = ch.BlockTreeRoot
return
} else {
//println("Last Block Hash:", btc.NewUint256(tlb).String())
var ok bool
ch.BlockTreeEnd, ok = ch.BlockIndex[btc.NewUint256(tlb).BIdx()]
if !ok {
panic("Last btc.Block Hash not found")
}
}
}
func chkblock(bl *btc.Block) (er error) {
// Check timestamp (must not be higher than now +2 hours)
if int64(bl.BlockTime()) > time.Now().Unix()+2*60*60 {
er = errors.New("CheckBlock() : block timestamp too far in the future")
return
}
MemBlockChainMutex.Lock()
if prv, pres := MemBlockChain.BlockIndex[bl.Hash.BIdx()]; pres {
MemBlockChainMutex.Unlock()
if prv.Parent == nil {
// This is genesis block
er = errors.New("Genesis")
return
} else {
return
}
}
prevblk, ok := MemBlockChain.BlockIndex[btc.NewUint256(bl.ParentHash()).BIdx()]
if !ok {
er = errors.New("CheckBlock: " + bl.Hash.String() + " parent not found")
return
}
// Check proof of work
gnwr := MemBlockChain.GetNextWorkRequired(prevblk, bl.BlockTime())
if bl.Bits() != gnwr {
if !Testnet || ((prevblk.Height+1)%2016) != 0 {
MemBlockChainMutex.Unlock()
er = errors.New(fmt.Sprint("CheckBlock: Incorrect proof of work at block", prevblk.Height+1))
return
}
}
cur := new(chain.BlockTreeNode)
cur.BlockHash = bl.Hash
cur.Parent = prevblk
cur.Height = prevblk.Height + 1
cur.TxCount = uint32(bl.TxCount)
copy(cur.BlockHeader[:], bl.Raw[:80])
prevblk.Childs = append(prevblk.Childs, cur)
MemBlockChain.BlockIndex[cur.BlockHash.BIdx()] = cur
MemBlockChainMutex.Unlock()
LastBlock.Mutex.Lock()
if cur.Height > LastBlock.node.Height {
LastBlock.node = cur
}
LastBlock.Mutex.Unlock()
return
}
func execute_test_tx(t *testing.T, tv *testvector) bool {
if len(tv.inps) == 0 {
t.Error("Vector has no inputs")
return false
}
rd, er := hex.DecodeString(tv.tx)
if er != nil {
t.Error(er.Error())
return false
}
tx, _ := btc.NewTx(rd)
if tx == nil {
t.Error("Canot decode tx")
return false
}
tx.Size = uint32(len(rd))
ha := btc.Sha2Sum(rd)
tx.Hash = btc.NewUint256(ha[:])
if skip_broken_tests(tx) {
return false
}
oks := 0
for i := range tx.TxIn {
var j int
for j = range tv.inps {
if bytes.Equal(tx.TxIn[i].Input.Hash[:], tv.inps[j].txid.Hash[:]) &&
tx.TxIn[i].Input.Vout == uint32(tv.inps[j].vout) {
break
}
}
if j >= len(tv.inps) {
t.Error("Matching input not found")
continue
}
pk, er := btc.DecodeScript(tv.inps[j].pkscr)
if er != nil {
t.Error(er.Error())
continue
}
var ss []byte
if tv.inps[j].vout >= 0 {
ss = tx.TxIn[i].ScriptSig
}
if VerifyTxScript(ss, pk, i, tx, tv.p2sh) {
oks++
}
}
return oks == len(tx.TxIn)
}
func nextBlock(ch *Chain, hash, header []byte, height, blen, txs uint32) {
bh := btc.NewUint256(hash[:])
if _, ok := ch.BlockIndex[bh.BIdx()]; ok {
println("nextBlock:", bh.String(), "- already in")
return
}
v := new(BlockTreeNode)
v.BlockHash = bh
v.Height = height
v.BlockSize = blen
v.TxCount = txs
copy(v.BlockHeader[:], header)
ch.BlockIndex[v.BlockHash.BIdx()] = v
}
// Read VLen followed by the number of locators
// parse the payload of getblocks and getheaders messages
func parseLocatorsPayload(pl []byte) (h2get []*btc.Uint256, hashstop *btc.Uint256, er error) {
var cnt uint64
var h [32]byte
var ver uint32
b := bytes.NewReader(pl)
// version
if er = binary.Read(b, binary.LittleEndian, &ver); er != nil {
return
}
// hash count
cnt, er = btc.ReadVLen(b)
if er != nil {
return
}
// block locator hashes
if cnt > 0 {
h2get = make([]*btc.Uint256, cnt)
for i := 0; i < int(cnt); i++ {
if _, er = b.Read(h[:]); er != nil {
return
}
h2get[i] = btc.NewUint256(h[:])
}
}
// hash_stop
if _, er = b.Read(h[:]); er != nil {
return
}
hashstop = btc.NewUint256(h[:])
return
}
func walk(ch *chain.Chain, hash, hdr []byte, height, blen, txs uint32) {
bh := btc.NewUint256(hash)
if _, ok := bidx[bh.Hash]; ok {
println("walk: ", bh.String(), "already in")
return
}
v := new(chain.BlockTreeNode)
v.BlockHash = bh
v.Height = height
v.BlockSize = blen
v.TxCount = txs
copy(v.BlockHeader[:], hdr)
bidx[bh.Hash] = v
cnt++
}
func (db *BlockDB) BlockTrusted(hash []byte) {
idx := btc.NewUint256(hash).BIdx()
db.mutex.Lock()
cur, ok := db.blockIndex[idx]
if !ok {
db.mutex.Unlock()
println("BlockTrusted: no such block")
return
}
if !cur.trusted {
//fmt.Println("mark", btc.NewUint256(hash).String(), "as trusted")
db.setBlockFlag(cur, BLOCK_TRUSTED)
}
db.mutex.Unlock()
}
// Return DB statistics
func (db *UnspentDB) GetStats() (s string) {
var tot, outcnt, sum, sumcb, stealth_uns, stealth_tot uint64
var mincnt, maxcnt, totdatasize, unspendable uint64
for i := range db.tdb {
dbcnt := uint64(db.dbN(i).Count())
if i == 0 {
mincnt, maxcnt = dbcnt, dbcnt
} else if dbcnt < mincnt {
mincnt = dbcnt
} else if dbcnt > maxcnt {
maxcnt = dbcnt
}
tot += dbcnt
db.dbN(i).Browse(func(k qdb.KeyType, v []byte) uint32 {
totdatasize += uint64(len(v) + 8)
rec := NewQdbRecStatic(k, v)
for idx, r := range rec.Outs {
if r != nil {
outcnt++
sum += r.Value
if rec.Coinbase {
sumcb += r.Value
}
if len(r.PKScr) > 0 && r.PKScr[0] == 0x6a {
unspendable++
}
if r.IsStealthIdx() && idx+1 < len(rec.Outs) {
if rec.Outs[idx+1] != nil {
stealth_uns++
}
stealth_tot++
}
}
}
return 0
})
}
s = fmt.Sprintf("UNSPENT: %.8f BTC in %d outs from %d txs. %.8f BTC in coinbase.\n",
float64(sum)/1e8, outcnt, tot, float64(sumcb)/1e8)
s += fmt.Sprintf(" Defrags:%d Recs/db : %d..%d TotalData:%.1fMB MaxTxOutCnt:%d \n",
db.defragCount, mincnt, maxcnt, float64(totdatasize)/1e6, len(rec_outs))
s += fmt.Sprintf(" Last Block : %s @ %d\n", btc.NewUint256(db.LastBlockHash).String(),
db.LastBlockHeight)
s += fmt.Sprintf(" Number of unspendable outputs: %d. Number of stealth indexes: %d / %d spent\n",
unspendable, stealth_uns, stealth_tot)
return
}
// Called from network threads
func blockWanted(h []byte) (yes bool) {
idx := btc.NewUint256(h).BIdx()
MutexRcv.Lock()
_, ok := ReceivedBlocks[idx]
MutexRcv.Unlock()
if !ok {
if atomic.LoadUint32(&common.CFG.Net.MaxBlockAtOnce) == 0 || !blocksLimitReached(idx) {
yes = true
common.CountSafe("BlockWanted")
} else {
common.CountSafe("BlockInProgress")
}
} else {
common.CountSafe("BlockUnwanted")
}
return
}
func (c *OneConnection) ProcessInv(pl []byte) {
if len(pl) < 37 {
println(c.PeerAddr.Ip(), "inv payload too short", len(pl))
return
}
c.InvsRecieved++
cnt, of := btc.VLen(pl)
if len(pl) != of+36*cnt {
println("inv payload length mismatch", len(pl), of, cnt)
}
var blinv2ask []byte
for i := 0; i < cnt; i++ {
typ := binary.LittleEndian.Uint32(pl[of : of+4])
common.CountSafe(fmt.Sprint("InvGot", typ))
if typ == 2 {
if blockWanted(pl[of+4 : of+36]) {
blinv2ask = append(blinv2ask, pl[of+4:of+36]...)
}
} else if typ == 1 {
if common.CFG.TXPool.Enabled {
c.TxInvNotify(pl[of+4 : of+36])
}
}
of += 36
}
if len(blinv2ask) > 0 {
bu := new(bytes.Buffer)
btc.WriteVlen(bu, uint64(len(blinv2ask)/32))
for i := 0; i < len(blinv2ask); i += 32 {
bh := btc.NewUint256(blinv2ask[i : i+32])
c.Mutex.Lock()
c.GetBlockInProgress[bh.BIdx()] = &oneBlockDl{hash: bh, start: time.Now()}
c.Mutex.Unlock()
binary.Write(bu, binary.LittleEndian, uint32(2))
bu.Write(bh.Hash[:])
}
c.SendRawMsg("getdata", bu.Bytes())
}
return
}
func (db *BlockDB) BlockInvalid(hash []byte) {
idx := btc.NewUint256(hash).BIdx()
db.mutex.Lock()
cur, ok := db.blockIndex[idx]
if !ok {
db.mutex.Unlock()
println("BlockInvalid: no such block")
return
}
if cur.trusted {
println("Looks like your UTXO database is corrupt")
println("To rebuild it, remove folder: " + db.dirname + "unspent4")
panic("Trusted block cannot be invalid")
}
//println("mark", btc.NewUint256(hash).String(), "as invalid")
db.setBlockFlag(cur, BLOCK_INVALID)
delete(db.blockIndex, idx)
db.mutex.Unlock()
}
func (db *BlockDB) LoadBlockIndex(ch *Chain, walk func(ch *Chain, hash, hdr []byte, height, blen, txs uint32)) (e error) {
var b [136]byte
var bh, txs uint32
var maxdatfilepos int64
validpos, _ := db.blockindx.Seek(0, os.SEEK_SET)
for !AbortNow {
_, e := db.blockindx.Read(b[:])
if e != nil {
break
}
if (b[0] & BLOCK_INVALID) != 0 {
// just ignore it
continue
}
ob := new(oneBl)
ob.trusted = (b[0] & BLOCK_TRUSTED) != 0
ob.compressed = (b[0] & BLOCK_COMPRSD) != 0
ob.snappied = (b[0] & BLOCK_SNAPPED) != 0
bh = binary.LittleEndian.Uint32(b[36:40])
ob.fpos = binary.LittleEndian.Uint64(b[40:48])
ob.blen = binary.LittleEndian.Uint32(b[48:52])
txs = binary.LittleEndian.Uint32(b[52:56])
ob.ipos = validpos
BlockHash := b[4:36]
db.blockIndex[btc.NewUint256(BlockHash).BIdx()] = ob
if int64(ob.fpos)+int64(ob.blen) > maxdatfilepos {
maxdatfilepos = int64(ob.fpos) + int64(ob.blen)
}
walk(ch, b[4:36], b[56:136], bh, ob.blen, txs)
validpos += 136
}
// In case if there was some trash at the end of data or index file, this should truncate it:
db.blockindx.Seek(validpos, os.SEEK_SET)
db.blockdata.Seek(maxdatfilepos, os.SEEK_SET)
return
}
// Look for specific TxPrevOut in the balance folder
func getUO(pto *btc.TxPrevOut) *btc.TxOut {
if _, ok := loadedTxs[pto.Hash]; !ok {
loadedTxs[pto.Hash] = tx_from_balance(btc.NewUint256(pto.Hash[:]), true)
}
return loadedTxs[pto.Hash].TxOut[pto.Vout]
}
func p_snd(w http.ResponseWriter, r *http.Request) {
if !ipchecker(r) {
return
}
s := load_template("send.html")
wallet.BalanceMutex.Lock()
if wallet.MyWallet != nil && len(wallet.MyBalance) > 0 {
wal := load_template("send_wal.html")
row_tmp := load_template("send_wal_row.html")
wal = strings.Replace(wal, "{TOTAL_BTC}", fmt.Sprintf("%.8f", float64(wallet.LastBalance)/1e8), 1)
wal = strings.Replace(wal, "{UNSPENT_OUTS}", fmt.Sprint(len(wallet.MyBalance)), -1)
for i := range wallet.MyBalance {
row := row_tmp
row = strings.Replace(row, "{WALLET_FILE}", html.EscapeString(wallet.MyBalance[i].BtcAddr.Extra.Wallet), 1)
lab := wallet.MyBalance[i].BtcAddr.Extra.Label
if wallet.MyBalance[i].BtcAddr.Extra.Virgin {
lab += " ***"
}
var estimated_sig_size uint
ms, msr := wallet.IsMultisig(wallet.MyBalance[i].BtcAddr)
if ms {
if msr != nil {
estimated_sig_size = msr.KeysRequired*AvgSignatureSize + msr.KeysProvided*AvgPublicKeySize
} else {
estimated_sig_size = 2*AvgSignatureSize + 3*AvgPublicKeySize
}
} else {
estimated_sig_size = AvgSignatureSize + AvgPublicKeySize
}
row = strings.Replace(row, "{ADDR_LABEL}", html.EscapeString(lab), 1)
row = strings.Replace(row, "{ROW_NUMBER}", fmt.Sprint(i+1), -1)
row = strings.Replace(row, "{MINED_IN}", fmt.Sprint(wallet.MyBalance[i].MinedAt), 1)
row = strings.Replace(row, "{TX_ID}", btc.NewUint256(wallet.MyBalance[i].TxPrevOut.Hash[:]).String(), -1)
row = strings.Replace(row, "{TX_VOUT}", fmt.Sprint(wallet.MyBalance[i].TxPrevOut.Vout), -1)
row = strings.Replace(row, "{TX_SIGSIZ}", fmt.Sprint(estimated_sig_size), -1)
row = strings.Replace(row, "{BTC_AMOUNT}", fmt.Sprintf("%.8f", float64(wallet.MyBalance[i].Value)/1e8), 1)
row = strings.Replace(row, "{OUT_VALUE}", fmt.Sprint(wallet.MyBalance[i].Value), 1)
row = strings.Replace(row, "{BTC_ADDR}", wallet.MyBalance[i].DestAddr(), 1)
row = strings.Replace(row, "<!--BTC_ADDR_TITLE-->", wallet.MyBalance[i].BtcAddr.String(), 1)
wal = templ_add(wal, "<!--UTXOROW-->", row)
}
// Own wallet
for i := range wallet.MyWallet.Addrs {
row := "wallet.push({'addr':'" + wallet.MyWallet.Addrs[i].Enc58str + "', " +
"'label':'" + wallet.MyWallet.Addrs[i].Extra.Label + "', " +
"'wallet':'" + wallet.MyWallet.Addrs[i].Extra.Wallet + "', " +
"'virgin':" + fmt.Sprint(wallet.MyWallet.Addrs[i].Extra.Virgin) + "})\n"
wal = templ_add(wal, "/*WALLET_ENTRY_JS*/", row)
}
wal = strings.Replace(wal, "/*WALLET_ENTRY_JS*/", "const ADDR_LIST_SIZE = "+fmt.Sprint(common.CFG.WebUI.AddrListLen), 1)
s = strings.Replace(s, "<!--WALLET-->", wal, 1)
} else {
if wallet.MyWallet == nil {
s = strings.Replace(s, "<!--WALLET-->", "You have no wallet", 1)
} else {
s = strings.Replace(s, "<!--WALLET-->", "Your current wallet is empty", 1)
}
}
wallet.BalanceMutex.Unlock()
write_html_head(w, r)
w.Write([]byte(s))
write_html_tail(w)
}
func main() {
fmt.Println("Gocoin FetchBal version", lib.Version)
fmt.Println("NOTE: This tool is deprecated. Use balio instead.")
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)
}
}
}
// Must be called from the chain's thread
func HandleNetTx(ntx *TxRcvd, retry bool) (accepted bool) {
common.CountSafe("HandleNetTx")
tx := ntx.tx
var totinp, totout uint64
var frommem bool
TxMutex.Lock()
if !retry {
if _, present := TransactionsPending[tx.Hash.BIdx()]; !present {
// It had to be mined in the meantime, so just drop it now
TxMutex.Unlock()
common.CountSafe("TxNotPending")
return
}
delete(TransactionsPending, ntx.tx.Hash.BIdx())
} else {
// In case case of retry, it is on the rejected list,
// ... so remove it now to free any tied WaitingForInputs
deleteRejected(tx.Hash.BIdx())
}
pos := make([]*btc.TxOut, len(tx.TxIn))
spent := make([]uint64, len(tx.TxIn))
// Check if all the inputs exist in the chain
for i := range tx.TxIn {
spent[i] = tx.TxIn[i].Input.UIdx()
if _, ok := SpentOutputs[spent[i]]; ok {
RejectTx(ntx.tx.Hash, len(ntx.raw), TX_REJECTED_DOUBLE_SPEND)
TxMutex.Unlock()
common.CountSafe("TxRejectedDoubleSpnd")
return
}
inptx := btc.NewUint256(tx.TxIn[i].Input.Hash[:])
if txinmem, ok := TransactionsToSend[inptx.BIdx()]; common.CFG.TXPool.AllowMemInputs && ok {
if int(tx.TxIn[i].Input.Vout) >= len(txinmem.TxOut) {
RejectTx(ntx.tx.Hash, len(ntx.raw), TX_REJECTED_BAD_INPUT)
TxMutex.Unlock()
common.CountSafe("TxRejectedBadInput")
return
}
pos[i] = txinmem.TxOut[tx.TxIn[i].Input.Vout]
common.CountSafe("TxInputInMemory")
frommem = true
} else {
pos[i], _ = common.BlockChain.Unspent.UnspentGet(&tx.TxIn[i].Input)
if pos[i] == nil {
var newone bool
if !common.CFG.TXPool.AllowMemInputs {
RejectTx(ntx.tx.Hash, len(ntx.raw), TX_REJECTED_NOT_MINED)
TxMutex.Unlock()
common.CountSafe("TxRejectedMemInput")
return
}
// In this case, let's "save" it for later...
missingid := btc.NewUint256(tx.TxIn[i].Input.Hash[:])
nrtx := RejectTx(ntx.tx.Hash, len(ntx.raw), TX_REJECTED_NO_TXOU)
if nrtx != nil {
nrtx.Wait4Input = &Wait4Input{missingTx: missingid, TxRcvd: ntx}
// Add to waiting list:
var rec *OneWaitingList
if rec, _ = WaitingForInputs[nrtx.Wait4Input.missingTx.BIdx()]; rec == nil {
rec = new(OneWaitingList)
rec.TxID = nrtx.Wait4Input.missingTx
rec.Ids = make(map[[btc.Uint256IdxLen]byte]time.Time)
newone = true
}
rec.Ids[tx.Hash.BIdx()] = time.Now()
WaitingForInputs[nrtx.Wait4Input.missingTx.BIdx()] = rec
}
TxMutex.Unlock()
if newone {
common.CountSafe("TxRejectedNoInpNew")
} else {
common.CountSafe("TxRejectedNoInpOld")
}
return
}
}
totinp += pos[i].Value
}
// Check if total output value does not exceed total input
minout := uint64(btc.MAX_MONEY)
for i := range tx.TxOut {
if tx.TxOut[i].Value < atomic.LoadUint64(&common.CFG.TXPool.MinVoutValue) {
RejectTx(ntx.tx.Hash, len(ntx.raw), TX_REJECTED_DUST)
TxMutex.Unlock()
common.CountSafe("TxRejectedDust")
return
}
if tx.TxOut[i].Value < minout {
minout = tx.TxOut[i].Value
}
totout += tx.TxOut[i].Value
}
if totout > totinp {
RejectTx(ntx.tx.Hash, len(ntx.raw), TX_REJECTED_OVERSPEND)
TxMutex.Unlock()
ntx.conn.DoS("TxOverspend")
return
}
// Check for a proper fee
fee := totinp - totout
if fee < (uint64(len(ntx.raw)) * atomic.LoadUint64(&common.CFG.TXPool.FeePerByte)) {
RejectTx(ntx.tx.Hash, len(ntx.raw), TX_REJECTED_LOW_FEE)
TxMutex.Unlock()
common.CountSafe("TxRejectedLowFee")
return
}
// Verify scripts
for i := range tx.TxIn {
if !script.VerifyTxScript(tx.TxIn[i].ScriptSig, pos[i].Pk_script, i, tx, true) {
RejectTx(ntx.tx.Hash, len(ntx.raw), TX_REJECTED_SCRIPT_FAIL)
TxMutex.Unlock()
ntx.conn.DoS("TxScriptFail")
return
}
}
rec := &OneTxToSend{Data: ntx.raw, Spent: spent, Volume: totinp, Fee: fee, Firstseen: time.Now(), Tx: tx, Minout: minout}
TransactionsToSend[tx.Hash.BIdx()] = rec
for i := range spent {
SpentOutputs[spent[i]] = tx.Hash.BIdx()
}
wtg := WaitingForInputs[tx.Hash.BIdx()]
if wtg != nil {
defer RetryWaitingForInput(wtg) // Redo waiting txs when leaving this function
}
TxMutex.Unlock()
common.CountSafe("TxAccepted")
if frommem {
// Gocoin does not route txs that need unconfirmed inputs
rec.Blocked = TX_REJECTED_NOT_MINED
common.CountSafe("TxRouteNotMined")
} else if isRoutable(rec) {
rec.Invsentcnt += NetRouteInv(1, tx.Hash, ntx.conn)
common.CountSafe("TxRouteOK")
}
accepted = true
return
}
func main() {
if len(os.Args)<2 {
fmt.Println("Specify a path to folder containig blockchain.dat and blockchain.new")
fmt.Println("Output bootstrap.dat file will be written in the current folder.")
return
}
blks := chain.NewBlockDB(os.Args[1])
if blks==nil {
return
}
fmt.Println("Loading block index...")
bidx = make(map[[32]byte] *chain.BlockTreeNode, 300e3)
blks.LoadBlockIndex(nil, walk)
var tail, nd *chain.BlockTreeNode
var genesis_block_hash *btc.Uint256
for _, v := range bidx {
if v==tail {
// skip root block (should be only one)
continue
}
par_hash := btc.NewUint256(v.BlockHeader[4:36])
par, ok := bidx[par_hash.Hash]
if !ok {
genesis_block_hash = par_hash
} else {
v.Parent = par
if tail==nil || v.Height > tail.Height {
tail = v
}
}
}
if genesis_block_hash == nil {
println("genesis_block_hash not found")
return
}
var magic []byte
gen_bin, _ := hex.DecodeString(GenesisBitcoin)
tmp := btc.NewSha2Hash(gen_bin[:80])
if genesis_block_hash.Equal(tmp) {
println("Bitcoin genesis block")
magic = []byte{0xF9,0xBE,0xB4,0xD9}
}
if magic==nil {
gen_bin, _ := hex.DecodeString(GenesisTestnet)
tmp = btc.NewSha2Hash(gen_bin[:80])
if genesis_block_hash.Equal(tmp) {
println("Testnet3 genesis block")
magic = []byte{0x0B,0x11,0x09,0x07}
}
}
if magic==nil {
println("Unknow genesis block", genesis_block_hash.String())
println("Aborting since cannot figure out the magic bytes")
return
}
var total_data, curr_data int64
for nd=tail; nd.Parent!=nil; {
nd.Parent.Childs = []*chain.BlockTreeNode{nd}
total_data += int64(nd.BlockSize)
nd = nd.Parent
}
fmt.Println("Writting bootstrap.dat, height", tail.Height, " magic", hex.EncodeToString(magic))
f, _ := os.Create("bootstrap.dat")
f.Write(magic)
binary.Write(f, binary.LittleEndian, uint32(len(gen_bin)))
f.Write(gen_bin)
for {
bl, _, _ := blks.BlockGet(nd.BlockHash)
f.Write(magic)
binary.Write(f, binary.LittleEndian, uint32(len(bl)))
f.Write(bl)
curr_data += int64(nd.BlockSize)
if (nd.Height&0xfff)==0 {
fmt.Printf("\r%.1f%%...", 100*float64(curr_data)/float64(total_data))
}
if len(nd.Childs)==0 {
break
}
nd = nd.Childs[0]
}
fmt.Println("\rDone ")
}
// This isusually the most time consuming process when applying a new block
func (ch *Chain) commitTxs(bl *btc.Block, changes *BlockChanges) (e error) {
sumblockin := btc.GetBlockReward(changes.Height)
var txoutsum, txinsum, sumblockout uint64
if int(changes.Height)+UnwindBufferMaxHistory >= int(changes.LastKnownHeight) {
changes.UndoData = make(map[[32]byte]*QdbRec)
}
// Add each tx outs from the current block to the temporary pool
blUnsp := make(map[[32]byte][]*btc.TxOut, 4*len(bl.Txs))
for i := range bl.Txs {
outs := make([]*btc.TxOut, len(bl.Txs[i].TxOut))
copy(outs, bl.Txs[i].TxOut)
blUnsp[bl.Txs[i].Hash.Hash] = outs
}
// create a channnel to receive results from VerifyScript threads:
done := make(chan bool, sys.UseThreads)
now := changes.Height == 381 && false
//println("pr", changes.Height)
for i := range bl.Txs {
txoutsum, txinsum = 0, 0
// Check each tx for a valid input, except from the first one
if i > 0 {
tx_trusted := bl.Trusted
if !tx_trusted && TrustedTxChecker != nil && TrustedTxChecker(bl.Txs[i].Hash) {
tx_trusted = true
}
scripts_ok := true
for j := 0; j < sys.UseThreads; j++ {
done <- true
}
for j := 0; j < len(bl.Txs[i].TxIn); /*&& e==nil*/ j++ {
inp := &bl.Txs[i].TxIn[j].Input
spendrec, waspent := changes.DeledTxs[inp.Hash]
if waspent && spendrec[inp.Vout] {
println("txin", inp.String(), "already spent in this block")
e = errors.New("Input spent more then once in same block")
break
}
tout := ch.PickUnspent(inp)
if tout == nil {
t, ok := blUnsp[inp.Hash]
if !ok {
e = errors.New("Unknown input TxID: " + btc.NewUint256(inp.Hash[:]).String())
break
}
if inp.Vout >= uint32(len(t)) {
println("Vout too big", len(t), inp.String())
e = errors.New("Vout too big")
break
}
if t[inp.Vout] == nil {
println("Vout already spent", inp.String())
e = errors.New("Vout already spent")
break
}
if t[inp.Vout].WasCoinbase {
e = errors.New("Cannot spend block's own coinbase in TxID: " + btc.NewUint256(inp.Hash[:]).String())
break
}
tout = t[inp.Vout]
t[inp.Vout] = nil // and now mark it as spent:
} else {
if tout.WasCoinbase && changes.Height-tout.BlockHeight < COINBASE_MATURITY {
e = errors.New("Trying to spend prematured coinbase: " + btc.NewUint256(inp.Hash[:]).String())
break
}
// it is confirmed already so delete it later
if !waspent {
spendrec = make([]bool, tout.VoutCount)
changes.DeledTxs[inp.Hash] = spendrec
}
spendrec[inp.Vout] = true
if changes.UndoData != nil {
var urec *QdbRec
urec = changes.UndoData[inp.Hash]
if urec == nil {
urec = new(QdbRec)
urec.TxID = inp.Hash
urec.Coinbase = tout.WasCoinbase
urec.InBlock = tout.BlockHeight
urec.Outs = make([]*QdbTxOut, tout.VoutCount)
changes.UndoData[inp.Hash] = urec
}
tmp := new(QdbTxOut)
tmp.Value = tout.Value
tmp.PKScr = make([]byte, len(tout.Pk_script))
copy(tmp.PKScr, tout.Pk_script)
urec.Outs[inp.Vout] = tmp
}
}
if !(<-done) {
println("VerifyScript error 1")
scripts_ok = false
break
}
if tx_trusted {
done <- true
} else {
go func(sig []byte, prv []byte, i int, tx *btc.Tx) {
done <- script.VerifyTxScript(sig, prv, i, tx, bl.BlockTime() >= BIP16SwitchTime)
}(bl.Txs[i].TxIn[j].ScriptSig, tout.Pk_script, j, bl.Txs[i])
}
// Verify Transaction script:
if now {
println("+", inp.String(), tout.Value)
}
txinsum += tout.Value
}
if scripts_ok {
scripts_ok = <-done
}
for j := 1; j < sys.UseThreads; j++ {
if !(<-done) {
println("VerifyScript error 2")
scripts_ok = false
}
}
if len(done) != 0 {
panic("ASSERT: The channel should be empty gere")
}
if !scripts_ok {
return errors.New("VerifyScripts failed")
}
} else {
// For coinbase tx we need to check (like satoshi) whether the script size is between 2 and 100 bytes
// (Previously we made sure in CheckBlock() that this was a coinbase type tx)
if len(bl.Txs[0].TxIn[0].ScriptSig) < 2 || len(bl.Txs[0].TxIn[0].ScriptSig) > 100 {
return errors.New(fmt.Sprint("Coinbase script has a wrong length", len(bl.Txs[0].TxIn[0].ScriptSig)))
}
}
sumblockin += txinsum
for j := range bl.Txs[i].TxOut {
txoutsum += bl.Txs[i].TxOut[j].Value
}
sumblockout += txoutsum
if e != nil {
return // If any input fails, do not continue
}
if i > 0 && txoutsum > txinsum {
return errors.New(fmt.Sprintf("More spent (%.8f) than at the input (%.8f) in TX %s",
float64(txoutsum)/1e8, float64(txinsum)/1e8, bl.Txs[i].Hash.String()))
}
}
if sumblockin < sumblockout {
return errors.New(fmt.Sprintf("Out:%d > In:%d", sumblockout, sumblockin))
}
var rec *QdbRec
for k, v := range blUnsp {
for i := range v {
if v[i] != nil {
if rec == nil {
rec = new(QdbRec)
rec.TxID = k
rec.Coinbase = v[i].WasCoinbase
rec.InBlock = changes.Height
rec.Outs = make([]*QdbTxOut, len(v))
}
rec.Outs[i] = &QdbTxOut{Value: v[i].Value, PKScr: v[i].Pk_script}
}
}
if rec != nil {
changes.AddList = append(changes.AddList, rec)
rec = nil
}
}
return nil
}
func (ch *Chain) CheckBlock(bl *btc.Block) (er error, dos bool, maybelater bool) {
// Size limits
if len(bl.Raw) < 81 || len(bl.Raw) > btc.MAX_BLOCK_SIZE {
er = errors.New("CheckBlock() : size limits failed")
dos = true
return
}
// Check timestamp (must not be higher than now +2 hours)
if int64(bl.BlockTime()) > time.Now().Unix()+2*60*60 {
er = errors.New("CheckBlock() : block timestamp too far in the future")
dos = true
return
}
if prv, pres := ch.BlockIndex[bl.Hash.BIdx()]; pres {
if prv.Parent == nil {
// This is genesis block
er = errors.New("Genesis")
return
} else {
er = errors.New("CheckBlock: " + bl.Hash.String() + " already in")
return
}
}
prevblk, ok := ch.BlockIndex[btc.NewUint256(bl.ParentHash()).BIdx()]
if !ok {
er = errors.New("CheckBlock: " + bl.Hash.String() + " parent not found")
maybelater = true
return
}
height := prevblk.Height + 1
// Reject the block if it reaches into the chain deeper than our unwind buffer
if prevblk != ch.BlockTreeEnd && int(ch.BlockTreeEnd.Height)-int(height) >= MovingCheckopintDepth {
er = errors.New(fmt.Sprint("CheckBlock: btc.Block ", bl.Hash.String(),
" hooks too deep into the chain: ", height, "/", ch.BlockTreeEnd.Height, " ",
btc.NewUint256(bl.ParentHash()).String()))
return
}
// Check proof of work
gnwr := ch.GetNextWorkRequired(prevblk, bl.BlockTime())
if bl.Bits() != gnwr {
println("AcceptBlock() : incorrect proof of work ", bl.Bits, " at block", height, " exp:", gnwr)
// Here is a "solution" for whatever shit there is in testnet3, that nobody can explain me:
if !ch.testnet() || (height%2016) != 0 {
er = errors.New("CheckBlock: incorrect proof of work")
dos = true
return
}
}
if bl.Txs == nil {
er = bl.BuildTxList()
if er != nil {
dos = true
return
}
}
if !bl.Trusted {
if bl.Version() == 0 || (height >= ForceBlockVer2From && !ch.testnet() && bl.Version() < 2) {
er = errors.New("CheckBlock() : Block version too low: " + bl.Hash.String())
dos = true
return
}
if bl.Version() >= 2 {
var exp []byte
if height >= 0x800000 {
if height >= 0x80000000 {
exp = []byte{5, byte(height), byte(height >> 8), byte(height >> 16), byte(height >> 24), 0}
} else {
exp = []byte{4, byte(height), byte(height >> 8), byte(height >> 16), byte(height >> 24)}
}
} else {
exp = []byte{3, byte(height), byte(height >> 8), byte(height >> 16)}
}
if len(bl.Txs[0].TxIn[0].ScriptSig) < len(exp) || !bytes.Equal(exp, bl.Txs[0].TxIn[0].ScriptSig[:len(exp)]) {
er = errors.New("CheckBlock() : Unexpected block number in coinbase: " + bl.Hash.String())
dos = true
return
}
}
// This is a stupid check, but well, we need to be satoshi compatible
if len(bl.Txs) == 0 || !bl.Txs[0].IsCoinBase() {
er = errors.New("CheckBlock() : first tx is not coinbase: " + bl.Hash.String())
dos = true
return
}
// Check Merkle Root - that's importnant
if !bytes.Equal(btc.GetMerkel(bl.Txs), bl.MerkleRoot()) {
er = errors.New("CheckBlock() : Merkle Root mismatch")
dos = true
return
}
// Check transactions - this is the most time consuming task
if !CheckTransactions(bl.Txs, height, bl.BlockTime()) {
er = errors.New("CheckBlock() : CheckTransactions() failed")
dos = true
return
}
}
return
}
func main() {
fmt.Println("Gocoin blockchain downloader version", lib.Version)
parse_command_line()
setup_runtime_vars()
if len(GocoinHomeDir) > 0 && GocoinHomeDir[len(GocoinHomeDir)-1] != os.PathSeparator {
GocoinHomeDir += string(os.PathSeparator)
}
if Testnet {
GocoinHomeDir += "tstnet" + string(os.PathSeparator)
Magic = [4]byte{0x0B, 0x11, 0x09, 0x07}
GenesisBlock = btc.NewUint256FromString("000000000933ea01ad0ee984209779baaec3ced90fa3f408719526f8d77f4943")
fmt.Println("Using testnet3")
} else {
GocoinHomeDir += "btcnet" + string(os.PathSeparator)
}
fmt.Println("GocoinHomeDir:", GocoinHomeDir)
sys.LockDatabaseDir(GocoinHomeDir)
defer sys.UnlockDatabaseDir()
peersdb.Testnet = Testnet
peersdb.InitPeers(GocoinHomeDir)
StartTime = time.Now()
if open_blockchain() {
fmt.Printf("Blockchain opening aborted\n")
return
}
fmt.Println("Blockchain open in", time.Now().Sub(StartTime))
go do_usif()
download_headers()
if GlobalExit() {
TheBlockChain.Close()
return
}
var HighestTrustedBlock *btc.Uint256
if LastTrustedBlock == "all" {
HighestTrustedBlock = TheBlockChain.BlockTreeEnd.BlockHash
fmt.Println("Assume all blocks trusted")
} else if LastTrustedBlock == "auto" {
if LastBlockHeight > 6 {
use := LastBlockHeight - 6
ha := BlocksToGet[use]
HighestTrustedBlock = btc.NewUint256(ha[:])
fmt.Println("Assume last trusted block as", HighestTrustedBlock.String(), "at", use)
} else {
fmt.Println("-t=auto ignored since LastBlockHeight is only", LastBlockHeight)
}
} else if LastTrustedBlock != "" {
HighestTrustedBlock = btc.NewUint256FromString(LastTrustedBlock)
}
if HighestTrustedBlock != nil {
for k, h := range BlocksToGet {
if bytes.Equal(h[:], HighestTrustedBlock.Hash[:]) {
TrustUpTo = k
break
}
}
} else {
fmt.Println("WARNING: The trusted block not found (it will be very slow).")
}
for n := TheBlockChain.BlockTreeEnd; n != nil && n.Height > TheBlockChain.BlockTreeEnd.Height-BSLEN; n = n.Parent {
blocksize_update(int(n.BlockSize))
}
fmt.Println("Downloading blocks - BlocksToGet:", len(BlocksToGet), " avg_size:", avg_block_size())
usif_prompt()
StartTime = time.Now()
get_blocks()
fmt.Println("Up to block", TheBlockChain.BlockTreeEnd.Height, "in", time.Now().Sub(StartTime).String())
close_all_connections()
peersdb.ClosePeerDB()
StartTime = time.Now()
fmt.Print("All blocks done - defrag unspent")
qdb.SetDefragPercent(100)
for {
if !TheBlockChain.Unspent.Idle() {
break
}
fmt.Print(".")
}
fmt.Println("\nDefrag unspent done in", time.Now().Sub(StartTime).String())
TheBlockChain.Close()
return
}