--- /dev/null
+#!/usr/bin/python
+# Public Domain
+# Original author: ArtForz
+# Twisted integration: slush
+
+import struct
+import socket
+import binascii
+import time
+import sys
+import random
+import cStringIO
+from Crypto.Hash import SHA256
+
+from twisted.internet.protocol import Protocol
+from util import *
+
+MY_VERSION = 31402
+MY_SUBVERSION = ".4"
+
+class CAddress(object):
+ def __init__(self):
+ self.nTime = 0
+ self.nServices = 1
+ self.pchReserved = "\x00" * 10 + "\xff" * 2
+ self.ip = "0.0.0.0"
+ self.port = 0
+ def deserialize(self, f):
+ #self.nTime = struct.unpack("<I", f.read(4))[0]
+ self.nServices = struct.unpack("<Q", f.read(8))[0]
+ self.pchReserved = f.read(12)
+ self.ip = socket.inet_ntoa(f.read(4))
+ self.port = struct.unpack(">H", f.read(2))[0]
+ def serialize(self):
+ r = ""
+ #r += struct.pack("<I", self.nTime)
+ r += struct.pack("<Q", self.nServices)
+ r += self.pchReserved
+ r += socket.inet_aton(self.ip)
+ r += struct.pack(">H", self.port)
+ return r
+ def __repr__(self):
+ return "CAddress(nServices=%i ip=%s port=%i)" % (self.nServices, self.ip, self.port)
+
+class CInv(object):
+ typemap = {
+ 0: "Error",
+ 1: "TX",
+ 2: "Block"}
+ def __init__(self):
+ self.type = 0
+ self.hash = 0L
+ def deserialize(self, f):
+ self.type = struct.unpack("<i", f.read(4))[0]
+ self.hash = deser_uint256(f)
+ def serialize(self):
+ r = ""
+ r += struct.pack("<i", self.type)
+ r += ser_uint256(self.hash)
+ return r
+ def __repr__(self):
+ return "CInv(type=%s hash=%064x)" % (self.typemap[self.type], self.hash)
+
+class CBlockLocator(object):
+ def __init__(self):
+ self.nVersion = MY_VERSION
+ self.vHave = []
+ def deserialize(self, f):
+ self.nVersion = struct.unpack("<i", f.read(4))[0]
+ self.vHave = deser_uint256_vector(f)
+ def serialize(self):
+ r = ""
+ r += struct.pack("<i", self.nVersion)
+ r += ser_uint256_vector(self.vHave)
+ return r
+ def __repr__(self):
+ return "CBlockLocator(nVersion=%i vHave=%s)" % (self.nVersion, repr(self.vHave))
+
+class COutPoint(object):
+ def __init__(self):
+ self.hash = 0
+ self.n = 0
+ def deserialize(self, f):
+ self.hash = deser_uint256(f)
+ self.n = struct.unpack("<I", f.read(4))[0]
+ def serialize(self):
+ r = ""
+ r += ser_uint256(self.hash)
+ r += struct.pack("<I", self.n)
+ return r
+ def __repr__(self):
+ return "COutPoint(hash=%064x n=%i)" % (self.hash, self.n)
+
+class CTxIn(object):
+ def __init__(self):
+ self.prevout = COutPoint()
+ self.scriptSig = ""
+ self.nSequence = 0
+ def deserialize(self, f):
+ self.prevout = COutPoint()
+ self.prevout.deserialize(f)
+ self.scriptSig = deser_string(f)
+ self.nSequence = struct.unpack("<I", f.read(4))[0]
+ def serialize(self):
+ r = ""
+ r += self.prevout.serialize()
+ r += ser_string(self.scriptSig)
+ r += struct.pack("<I", self.nSequence)
+ return r
+ def __repr__(self):
+ return "CTxIn(prevout=%s scriptSig=%s nSequence=%i)" % (repr(self.prevout), binascii.hexlify(self.scriptSig), self.nSequence)
+
+class CTxOut(object):
+ def __init__(self):
+ self.nValue = 0
+ self.scriptPubKey = ""
+ def deserialize(self, f):
+ self.nValue = struct.unpack("<q", f.read(8))[0]
+ self.scriptPubKey = deser_string(f)
+ def serialize(self):
+ r = ""
+ r += struct.pack("<q", self.nValue)
+ r += ser_string(self.scriptPubKey)
+ return r
+ def __repr__(self):
+ return "CTxOut(nValue=%i.%08i scriptPubKey=%s)" % (self.nValue // 100000000, self.nValue % 100000000, binascii.hexlify(self.scriptPubKey))
+
+class CTransaction(object):
+ def __init__(self):
+ self.nVersion = 1
+ self.vin = []
+ self.vout = []
+ self.nLockTime = 0
+ self.sha256 = None
+ def deserialize(self, f):
+ self.nVersion = struct.unpack("<i", f.read(4))[0]
+ self.vin = deser_vector(f, CTxIn)
+ self.vout = deser_vector(f, CTxOut)
+ self.nLockTime = struct.unpack("<I", f.read(4))[0]
+ self.sha256 = None
+ def serialize(self):
+ r = ""
+ r += struct.pack("<i", self.nVersion)
+ r += ser_vector(self.vin)
+ r += ser_vector(self.vout)
+ r += struct.pack("<I", self.nLockTime)
+ return r
+
+ def calc_sha256(self):
+ if self.sha256 is None:
+ self.sha256 = uint256_from_str(SHA256.new(SHA256.new(self.serialize()).digest()).digest())
+ return self.sha256
+
+ def is_valid(self):
+ self.calc_sha256()
+ for tout in self.vout:
+ if tout.nValue < 0 or tout.nValue > 21000000L * 100000000L:
+ return False
+ return True
+ def __repr__(self):
+ return "CTransaction(nVersion=%i vin=%s vout=%s nLockTime=%i)" % (self.nVersion, repr(self.vin), repr(self.vout), self.nLockTime)
+
+class CBlock(object):
+ def __init__(self):
+ self.nVersion = 1
+ self.hashPrevBlock = 0
+ self.hashMerkleRoot = 0
+ self.nTime = 0
+ self.nBits = 0
+ self.nNonce = 0
+ self.vtx = []
+ self.sha256 = None
+ def deserialize(self, f):
+ self.nVersion = struct.unpack("<i", f.read(4))[0]
+ self.hashPrevBlock = deser_uint256(f)
+ self.hashMerkleRoot = deser_uint256(f)
+ self.nTime = struct.unpack("<I", f.read(4))[0]
+ self.nBits = struct.unpack("<I", f.read(4))[0]
+ self.nNonce = struct.unpack("<I", f.read(4))[0]
+ self.vtx = deser_vector(f, CTransaction)
+ def serialize(self):
+ r = []
+ r.append(struct.pack("<i", self.nVersion))
+ r.append(ser_uint256(self.hashPrevBlock))
+ r.append(ser_uint256(self.hashMerkleRoot))
+ r.append(struct.pack("<I", self.nTime))
+ r.append(struct.pack("<I", self.nBits))
+ r.append(struct.pack("<I", self.nNonce))
+ r.append(ser_vector(self.vtx))
+ return ''.join(r)
+ def calc_sha256(self):
+ if self.sha256 is None:
+ r = []
+ r.append(struct.pack("<i", self.nVersion))
+ r.append(ser_uint256(self.hashPrevBlock))
+ r.append(ser_uint256(self.hashMerkleRoot))
+ r.append(struct.pack("<I", self.nTime))
+ r.append(struct.pack("<I", self.nBits))
+ r.append(struct.pack("<I", self.nNonce))
+ self.sha256 = uint256_from_str(SHA256.new(SHA256.new(''.join(r)).digest()).digest())
+ return self.sha256
+
+ def is_valid(self):
+ self.calc_sha256()
+ target = uint256_from_compact(self.nBits)
+ if self.sha256 > target:
+ return False
+ hashes = []
+ for tx in self.vtx:
+ tx.sha256 = None
+ if not tx.is_valid():
+ return False
+ tx.calc_sha256()
+ hashes.append(ser_uint256(tx.sha256))
+
+ while len(hashes) > 1:
+ newhashes = []
+ for i in xrange(0, len(hashes), 2):
+ i2 = min(i+1, len(hashes)-1)
+ newhashes.append(SHA256.new(SHA256.new(hashes[i] + hashes[i2]).digest()).digest())
+ hashes = newhashes
+
+ if uint256_from_str(hashes[0]) != self.hashMerkleRoot:
+ return False
+ return True
+ def __repr__(self):
+ return "CBlock(nVersion=%i hashPrevBlock=%064x hashMerkleRoot=%064x nTime=%s nBits=%08x nNonce=%08x vtx=%s)" % (self.nVersion, self.hashPrevBlock, self.hashMerkleRoot, time.ctime(self.nTime), self.nBits, self.nNonce, repr(self.vtx))
+
+class msg_version(object):
+ command = "version"
+ def __init__(self):
+ self.nVersion = MY_VERSION
+ self.nServices = 0
+ self.nTime = time.time()
+ self.addrTo = CAddress()
+ self.addrFrom = CAddress()
+ self.nNonce = random.getrandbits(64)
+ self.strSubVer = MY_SUBVERSION
+ self.nStartingHeight = 0
+
+ def deserialize(self, f):
+ self.nVersion = struct.unpack("<i", f.read(4))[0]
+ if self.nVersion == 10300:
+ self.nVersion = 300
+ self.nServices = struct.unpack("<Q", f.read(8))[0]
+ self.nTime = struct.unpack("<q", f.read(8))[0]
+ self.addrTo = CAddress()
+ self.addrTo.deserialize(f)
+ self.addrFrom = CAddress()
+ self.addrFrom.deserialize(f)
+ self.nNonce = struct.unpack("<Q", f.read(8))[0]
+ self.strSubVer = deser_string(f)
+ self.nStartingHeight = struct.unpack("<i", f.read(4))[0]
+ def serialize(self):
+ r = []
+ r.append(struct.pack("<i", self.nVersion))
+ r.append(struct.pack("<Q", self.nServices))
+ r.append(struct.pack("<q", self.nTime))
+ r.append(self.addrTo.serialize())
+ r.append(self.addrFrom.serialize())
+ r.append(struct.pack("<Q", self.nNonce))
+ r.append(ser_string(self.strSubVer))
+ r.append(struct.pack("<i", self.nStartingHeight))
+ return ''.join(r)
+ def __repr__(self):
+ return "msg_version(nVersion=%i nServices=%i nTime=%s addrTo=%s addrFrom=%s nNonce=0x%016X strSubVer=%s nStartingHeight=%i)" % (self.nVersion, self.nServices, time.ctime(self.nTime), repr(self.addrTo), repr(self.addrFrom), self.nNonce, self.strSubVer, self.nStartingHeight)
+
+class msg_verack(object):
+ command = "verack"
+ def __init__(self):
+ pass
+ def deserialize(self, f):
+ pass
+ def serialize(self):
+ return ""
+ def __repr__(self):
+ return "msg_verack()"
+
+class msg_addr(object):
+ command = "addr"
+ def __init__(self):
+ self.addrs = []
+ def deserialize(self, f):
+ self.addrs = deser_vector(f, CAddress)
+ def serialize(self):
+ return ser_vector(self.addrs)
+ def __repr__(self):
+ return "msg_addr(addrs=%s)" % (repr(self.addrs))
+
+class msg_inv(object):
+ command = "inv"
+ def __init__(self):
+ self.inv = []
+ def deserialize(self, f):
+ self.inv = deser_vector(f, CInv)
+ def serialize(self):
+ return ser_vector(self.inv)
+ def __repr__(self):
+ return "msg_inv(inv=%s)" % (repr(self.inv))
+
+class msg_getdata(object):
+ command = "getdata"
+ def __init__(self):
+ self.inv = []
+ def deserialize(self, f):
+ self.inv = deser_vector(f, CInv)
+ def serialize(self):
+ return ser_vector(self.inv)
+ def __repr__(self):
+ return "msg_getdata(inv=%s)" % (repr(self.inv))
+
+class msg_getblocks(object):
+ command = "getblocks"
+ def __init__(self):
+ self.locator = CBlockLocator()
+ self.hashstop = 0L
+ def deserialize(self, f):
+ self.locator = CBlockLocator()
+ self.locator.deserialize(f)
+ self.hashstop = deser_uint256(f)
+ def serialize(self):
+ r = []
+ r.append(self.locator.serialize())
+ r.append(ser_uint256(self.hashstop))
+ return ''.join(r)
+ def __repr__(self):
+ return "msg_getblocks(locator=%s hashstop=%064x)" % (repr(self.locator), self.hashstop)
+
+class msg_tx(object):
+ command = "tx"
+ def __init__(self):
+ self.tx = CTransaction()
+ def deserialize(self, f):
+ self.tx.deserialize(f)
+ def serialize(self):
+ return self.tx.serialize()
+ def __repr__(self):
+ return "msg_tx(tx=%s)" % (repr(self.tx))
+
+class msg_block(object):
+ command = "block"
+ def __init__(self):
+ self.block = CBlock()
+ def deserialize(self, f):
+ self.block.deserialize(f)
+ def serialize(self):
+ return self.block.serialize()
+ def __repr__(self):
+ return "msg_block(block=%s)" % (repr(self.block))
+
+class msg_getaddr(object):
+ command = "getaddr"
+ def __init__(self):
+ pass
+ def deserialize(self, f):
+ pass
+ def serialize(self):
+ return ""
+ def __repr__(self):
+ return "msg_getaddr()"
+
+class msg_ping(object):
+ command = "ping"
+ def __init__(self):
+ pass
+ def deserialize(self, f):
+ pass
+ def serialize(self):
+ return ""
+ def __repr__(self):
+ return "msg_ping()"
+
+class msg_alert(object):
+ command = "alert"
+ def __init__(self):
+ pass
+ def deserialize(self, f):
+ pass
+ def serialize(self):
+ return ""
+ def __repr__(self):
+ return "msg_alert()"
+
+class BitcoinP2PProtocol(Protocol):
+ messagemap = {
+ "version": msg_version,
+ "verack": msg_verack,
+ "addr": msg_addr,
+ "inv": msg_inv,
+ "getdata": msg_getdata,
+ "getblocks": msg_getblocks,
+ "tx": msg_tx,
+ "block": msg_block,
+ "getaddr": msg_getaddr,
+ "ping": msg_ping,
+ "alert": msg_alert,
+ }
+
+ def connectionMade(self):
+ peer = self.transport.getPeer()
+ self.dstaddr = peer.host
+ self.dstport = peer.port
+ self.recvbuf = ""
+ self.last_sent = 0
+
+ t = msg_version()
+ t.nStartingHeight = getattr(self, 'nStartingHeight', 0)
+ t.addrTo.ip = self.dstaddr
+ t.addrTo.port = self.dstport
+ t.addrTo.nTime = time.time()
+ t.addrFrom.ip = "0.0.0.0"
+ t.addrFrom.port = 0
+ t.addrFrom.nTime = time.time()
+ self.send_message(t)
+
+ def dataReceived(self, data):
+ self.recvbuf += data
+ self.got_data()
+
+ def got_data(self):
+ while True:
+ if len(self.recvbuf) < 4:
+ return
+ if self.recvbuf[:4] != "\xf9\xbe\xb4\xd9":
+ raise ValueError("got garbage %s" % repr(self.recvbuf))
+
+ if len(self.recvbuf) < 4 + 12 + 4 + 4:
+ return
+ command = self.recvbuf[4:4+12].split("\x00", 1)[0]
+ msglen = struct.unpack("<i", self.recvbuf[4+12:4+12+4])[0]
+ checksum = self.recvbuf[4+12+4:4+12+4+4]
+ if len(self.recvbuf) < 4 + 12 + 4 + 4 + msglen:
+ return
+ msg = self.recvbuf[4+12+4+4:4+12+4+4+msglen]
+ th = SHA256.new(msg).digest()
+ h = SHA256.new(th).digest()
+ if checksum != h[:4]:
+ raise ValueError("got bad checksum %s" % repr(self.recvbuf))
+ self.recvbuf = self.recvbuf[4+12+4+4+msglen:]
+
+ if command in self.messagemap:
+ f = cStringIO.StringIO(msg)
+ t = self.messagemap[command]()
+ t.deserialize(f)
+ self.got_message(t)
+ else:
+ print "UNKNOWN COMMAND", command, repr(msg)
+
+ def prepare_message(self, message):
+ command = message.command
+ data = message.serialize()
+ tmsg = "\xf9\xbe\xb4\xd9"
+ tmsg += command
+ tmsg += "\x00" * (12 - len(command))
+ tmsg += struct.pack("<I", len(data))
+ th = SHA256.new(data).digest()
+ h = SHA256.new(th).digest()
+ tmsg += h[:4]
+ tmsg += data
+ return tmsg
+
+ def send_serialized_message(self, tmsg):
+ if not self.connected:
+ return
+
+ self.transport.write(tmsg)
+ self.last_sent = time.time()
+
+ def send_message(self, message):
+ if not self.connected:
+ return
+
+ #print message.command
+
+ #print "send %s" % repr(message)
+ command = message.command
+ data = message.serialize()
+ tmsg = "\xf9\xbe\xb4\xd9"
+ tmsg += command
+ tmsg += "\x00" * (12 - len(command))
+ tmsg += struct.pack("<I", len(data))
+ th = SHA256.new(data).digest()
+ h = SHA256.new(th).digest()
+ tmsg += h[:4]
+ tmsg += data
+
+ #print tmsg, len(tmsg)
+ self.transport.write(tmsg)
+ self.last_sent = time.time()
+
+ def got_message(self, message):
+ if self.last_sent + 30 * 60 < time.time():
+ self.send_message(msg_ping())
+
+ mname = 'do_' + message.command
+ #print mname
+ if not hasattr(self, mname):
+ return
+
+ method = getattr(self, mname)
+ method(message)
+
+# if message.command == "tx":
+# message.tx.calc_sha256()
+# sha256 = message.tx.sha256
+# pubkey = binascii.hexlify(message.tx.vout[0].scriptPubKey)
+# txlock.acquire()
+# tx.append([str(sha256), str(time.time()), str(self.dstaddr), pubkey])
+# txlock.release()
+
+ def do_version(self, message):
+ #print message
+ self.send_message(msg_verack())
+
+ def do_inv(self, message):
+ want = msg_getdata()
+ for i in message.inv:
+ if i.type == 1:
+ want.inv.append(i)
+ if i.type == 2:
+ want.inv.append(i)
+ if len(want.inv):
+ self.send_message(want)
git://git.novaco.in / stratum-mining.git / blobdiff