// Parese network's "addr" message
func ParseAddr(pl []byte) {
b := bytes.NewBuffer(pl)
cnt, _ := btc.ReadVLen(b)
for i := 0; i < int(cnt); i++ {
var buf [30]byte
n, e := b.Read(buf[:])
if n != len(buf) || e != nil {
common.CountSafe("AddrError")
//println("ParseAddr:", n, e)
break
}
a := peersdb.NewPeer(buf[:])
if !sys.ValidIp4(a.Ip4[:]) {
common.CountSafe("AddrInvalid")
} else if time.Unix(int64(a.Time), 0).Before(time.Now().Add(time.Minute)) {
if time.Now().Before(time.Unix(int64(a.Time), 0).Add(peersdb.ExpirePeerAfter)) {
k := qdb.KeyType(a.UniqID())
v := peersdb.PeerDB.Get(k)
if v != nil {
a.Banned = peersdb.NewPeer(v[:]).Banned
}
peersdb.PeerDB.Put(k, a.Bytes())
} else {
common.CountSafe("AddrStale")
}
} else {
common.CountSafe("AddrInFuture")
}
}
}
func (db *UnspentDB) del(hash []byte, outs []bool) {
if db.ch.CB.NotifyTxDel != nil {
db.ch.CB.NotifyTxDel(hash, outs)
}
ind := qdb.KeyType(binary.LittleEndian.Uint64(hash[:8]))
_db := db.dbN(int(hash[31]) % NumberOfUnspentSubDBs)
v := _db.Get(ind)
if v == nil {
return // no such txid in UTXO (just ignorde delete request)
}
rec := NewQdbRec(ind, v)
var anyout bool
for i, rm := range outs {
if rm {
rec.Outs[i] = nil
} else if rec.Outs[i] != nil {
anyout = true
}
}
if anyout {
_db.Put(ind, rec.Bytes())
} else {
_db.Del(ind)
}
}
func parse_addr(pl []byte) {
b := bytes.NewBuffer(pl)
cnt, _ := btc.ReadVLen(b)
for i := 0; i < int(cnt); i++ {
var buf [30]byte
n, e := b.Read(buf[:])
if n != len(buf) || e != nil {
COUNTER("ADER")
//println("ParseAddr:", n, e)
break
}
a := peersdb.NewPeer(buf[:])
if !sys.ValidIp4(a.Ip4[:]) {
COUNTER("ADNO")
} else if time.Unix(int64(a.Time), 0).Before(time.Now().Add(time.Minute)) {
if time.Now().Before(time.Unix(int64(a.Time), 0).Add(peersdb.ExpirePeerAfter)) {
k := qdb.KeyType(a.UniqID())
v := peersdb.PeerDB.Get(k)
if v != nil {
a.Banned = peersdb.NewPeer(v[:]).Banned
}
peersdb.PeerDB.Put(k, a.Bytes())
} else {
COUNTER("ADST")
}
} else {
COUNTER("ADFU")
}
}
}
func (db *UnspentDB) UndoBlockTxs(bl *btc.Block, newhash []byte) {
for _, tx := range bl.Txs {
lst := make([]bool, len(tx.TxOut))
for i := range lst {
lst[i] = true
}
db.del(tx.Hash.Hash[:], lst)
}
fn := fmt.Sprint(db.dir, db.LastBlockHeight)
var addback []*QdbRec
if _, er := os.Stat(fn); er != nil {
fn += ".tmp"
}
dat, er := ioutil.ReadFile(fn)
if er != nil {
panic(er.Error())
}
off := 32 // ship the block hash
for off < len(dat) {
le, n := btc.VLen(dat[off:])
off += n
qr := FullQdbRec(dat[off : off+le])
off += le
addback = append(addback, qr)
}
for _, tx := range addback {
if db.ch.CB.NotifyTxAdd != nil {
db.ch.CB.NotifyTxAdd(tx)
}
ind := qdb.KeyType(binary.LittleEndian.Uint64(tx.TxID[:8]))
_db := db.dbN(int(tx.TxID[31]) % NumberOfUnspentSubDBs)
v := _db.Get(ind)
if v != nil {
oldrec := NewQdbRec(ind, v)
for a := range tx.Outs {
if tx.Outs[a] == nil {
tx.Outs[a] = oldrec.Outs[a]
}
}
}
_db.PutExt(ind, tx.Bytes(), 0)
}
os.Remove(fn)
db.LastBlockHeight--
copy(db.LastBlockHash, newhash)
}
func (db *UnspentDB) commit(changes *BlockChanges) {
// Now aplly the unspent changes
for _, rec := range changes.AddList {
ind := qdb.KeyType(binary.LittleEndian.Uint64(rec.TxID[:8]))
if db.ch.CB.NotifyTxAdd != nil {
db.ch.CB.NotifyTxAdd(rec)
}
db.dbN(int(rec.TxID[31])%NumberOfUnspentSubDBs).PutExt(ind, rec.Bytes(), 0)
}
for k, v := range changes.DeledTxs {
db.del(k[:], v)
}
}
// Get ne unspent output
func (db *UnspentDB) UnspentGet(po *btc.TxPrevOut) (res *btc.TxOut, e error) {
ind := qdb.KeyType(binary.LittleEndian.Uint64(po.Hash[:8]))
v := db.dbN(int(po.Hash[31]) % NumberOfUnspentSubDBs).Get(ind)
if v == nil {
e = errors.New("Unspent TX not found")
return
}
rec := NewQdbRec(ind, v)
if len(rec.Outs) < int(po.Vout) || rec.Outs[po.Vout] == nil {
e = errors.New("Unspent VOut not found")
return
}
res = new(btc.TxOut)
res.VoutCount = uint32(len(rec.Outs))
res.WasCoinbase = rec.Coinbase
res.BlockHeight = rec.InBlock
res.Value = rec.Outs[po.Vout].Value
res.Pk_script = rec.Outs[po.Vout].PKScr
return
}
func NewPeerFromString(ipstr string) (p *PeerAddr, e error) {
port := DefaultTcpPort()
x := strings.Index(ipstr, ":")
if x != -1 {
v, er := strconv.ParseUint(ipstr[x+1:], 10, 32)
if er != nil {
e = er
return
}
if v > 0xffff {
e = errors.New("Port number too big")
return
}
port = uint16(v)
ipstr = ipstr[:x] // remove port number
}
ip := net.ParseIP(ipstr)
if ip != nil && len(ip) == 16 {
if sys.IsIPBlocked(ip[12:16]) {
e = errors.New(ipstr + " is blocked")
return
}
p = NewEmptyPeer()
copy(p.Ip4[:], ip[12:16])
p.Services = Services
copy(p.Ip6[:], ip[:12])
p.Port = port
if dbp := PeerDB.Get(qdb.KeyType(p.UniqID())); dbp != nil && NewPeer(dbp).Banned != 0 {
e = errors.New(p.Ip() + " is banned")
p = nil
} else {
p.Time = uint32(time.Now().Unix())
p.Save()
}
} else {
e = errors.New("Error parsing IP '" + ipstr + "'")
}
return
}
func FullQdbRec(dat []byte) *QdbRec {
return NewQdbRec(qdb.KeyType(binary.LittleEndian.Uint64(dat[:8])), dat[8:])
}
func (p *PeerAddr) Save() {
PeerDB.Put(qdb.KeyType(p.UniqID()), p.Bytes())
}