import random
import aes
import ecdsa
+import Queue
+import time
from ecdsa.util import string_to_number, number_to_string
-from util import print_error
-from util import user_dir
-
-############ functions from pywallet #####################
-
-addrtype = 0
-
-def hash_160(public_key):
- try:
- md = hashlib.new('ripemd160')
- md.update(hashlib.sha256(public_key).digest())
- return md.digest()
- except:
- import ripemd
- md = ripemd.new(hashlib.sha256(public_key).digest())
- return md.digest()
-
-
-def public_key_to_bc_address(public_key):
- h160 = hash_160(public_key)
- return hash_160_to_bc_address(h160)
-
-def hash_160_to_bc_address(h160):
- vh160 = chr(addrtype) + h160
- h = Hash(vh160)
- addr = vh160 + h[0:4]
- return b58encode(addr)
-
-def bc_address_to_hash_160(addr):
- bytes = b58decode(addr, 25)
- return bytes[1:21]
-
-def encode_point(pubkey, compressed=False):
- order = generator_secp256k1.order()
- p = pubkey.pubkey.point
- x_str = ecdsa.util.number_to_string(p.x(), order)
- y_str = ecdsa.util.number_to_string(p.y(), order)
- if compressed:
- return chr(2 + (p.y() & 1)) + x_str
- else:
- return chr(4) + pubkey.to_string() #x_str + y_str
-
-__b58chars = '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz'
-__b58base = len(__b58chars)
-
-def b58encode(v):
- """ encode v, which is a string of bytes, to base58."""
-
- long_value = 0L
- for (i, c) in enumerate(v[::-1]):
- long_value += (256**i) * ord(c)
-
- result = ''
- while long_value >= __b58base:
- div, mod = divmod(long_value, __b58base)
- result = __b58chars[mod] + result
- long_value = div
- result = __b58chars[long_value] + result
-
- # Bitcoin does a little leading-zero-compression:
- # leading 0-bytes in the input become leading-1s
- nPad = 0
- for c in v:
- if c == '\0': nPad += 1
- else: break
-
- return (__b58chars[0]*nPad) + result
-
-def b58decode(v, length):
- """ decode v into a string of len bytes."""
- long_value = 0L
- for (i, c) in enumerate(v[::-1]):
- long_value += __b58chars.find(c) * (__b58base**i)
-
- result = ''
- while long_value >= 256:
- div, mod = divmod(long_value, 256)
- result = chr(mod) + result
- long_value = div
- result = chr(long_value) + result
-
- nPad = 0
- for c in v:
- if c == __b58chars[0]: nPad += 1
- else: break
-
- result = chr(0)*nPad + result
- if length is not None and len(result) != length:
- return None
-
- return result
-
-
-def Hash(data):
- return hashlib.sha256(hashlib.sha256(data).digest()).digest()
-
-def EncodeBase58Check(vchIn):
- hash = Hash(vchIn)
- return b58encode(vchIn + hash[0:4])
-
-def DecodeBase58Check(psz):
- vchRet = b58decode(psz, None)
- key = vchRet[0:-4]
- csum = vchRet[-4:]
- hash = Hash(key)
- cs32 = hash[0:4]
- if cs32 != csum:
- return None
- else:
- return key
-
-def PrivKeyToSecret(privkey):
- return privkey[9:9+32]
-
-def SecretToASecret(secret):
- vchIn = chr(addrtype+128) + secret
- return EncodeBase58Check(vchIn)
-
-def ASecretToSecret(key):
- vch = DecodeBase58Check(key)
- if vch and vch[0] == chr(addrtype+128):
- return vch[1:]
- else:
- return False
-
-########### end pywallet functions #######################
-
+from util import print_error, user_dir, format_satoshis
+from bitcoin import *
# URL decode
_ud = re.compile('%([0-9a-hA-H]{2})', re.MULTILINE)
urldecode = lambda x: _ud.sub(lambda m: chr(int(m.group(1), 16)), x)
-
-def int_to_hex(i, length=1):
- s = hex(i)[2:].rstrip('L')
- s = "0"*(2*length - len(s)) + s
- return s.decode('hex')[::-1].encode('hex')
-
-
-# AES
+# AES encryption
EncodeAES = lambda secret, s: base64.b64encode(aes.encryptData(secret,s))
DecodeAES = lambda secret, e: aes.decryptData(secret, base64.b64decode(e))
-
-# secp256k1, http://www.oid-info.com/get/1.3.132.0.10
-_p = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC2FL
-_r = 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141L
-_b = 0x0000000000000000000000000000000000000000000000000000000000000007L
-_a = 0x0000000000000000000000000000000000000000000000000000000000000000L
-_Gx = 0x79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798L
-_Gy = 0x483ada7726a3c4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8L
-curve_secp256k1 = ecdsa.ellipticcurve.CurveFp( _p, _a, _b )
-generator_secp256k1 = ecdsa.ellipticcurve.Point( curve_secp256k1, _Gx, _Gy, _r )
-oid_secp256k1 = (1,3,132,0,10)
-SECP256k1 = ecdsa.curves.Curve("SECP256k1", curve_secp256k1, generator_secp256k1, oid_secp256k1 )
-
-
-def filter(s):
- out = re.sub('( [^\n]*|)\n','',s)
- out = out.replace(' ','')
- out = out.replace('\n','')
- return out
-
-def raw_tx( inputs, outputs, for_sig = None ):
- s = int_to_hex(1,4) + ' version\n'
- s += int_to_hex( len(inputs) ) + ' number of inputs\n'
- for i in range(len(inputs)):
- _, _, p_hash, p_index, p_script, pubkey, sig = inputs[i]
- s += p_hash.decode('hex')[::-1].encode('hex') + ' prev hash\n'
- s += int_to_hex(p_index,4) + ' prev index\n'
- if for_sig is None:
- sig = sig + chr(1) # hashtype
- script = int_to_hex( len(sig)) + ' push %d bytes\n'%len(sig)
- script += sig.encode('hex') + ' sig\n'
- pubkey = chr(4) + pubkey
- script += int_to_hex( len(pubkey)) + ' push %d bytes\n'%len(pubkey)
- script += pubkey.encode('hex') + ' pubkey\n'
- elif for_sig==i:
- script = p_script + ' scriptsig \n'
- else:
- script=''
- s += int_to_hex( len(filter(script))/2 ) + ' script length \n'
- s += script
- s += "ffffffff" + ' sequence\n'
- s += int_to_hex( len(outputs) ) + ' number of outputs\n'
- for output in outputs:
- addr, amount = output
- s += int_to_hex( amount, 8) + ' amount: %d\n'%amount
- script = '76a9' # op_dup, op_hash_160
- script += '14' # push 0x14 bytes
- script += bc_address_to_hash_160(addr).encode('hex')
- script += '88ac' # op_equalverify, op_checksig
- s += int_to_hex( len(filter(script))/2 ) + ' script length \n'
- s += script + ' script \n'
- s += int_to_hex(0,4) # lock time
- if for_sig is not None: s += int_to_hex(1, 4) # hash type
- return s
-
-
-
-
-def format_satoshis(x, is_diff=False, num_zeros = 0):
- from decimal import Decimal
- s = Decimal(x)
- sign, digits, exp = s.as_tuple()
- digits = map(str, digits)
- while len(digits) < 9:
- digits.insert(0,'0')
- digits.insert(-8,'.')
- s = ''.join(digits).rstrip('0')
- if sign:
- s = '-' + s
- elif is_diff:
- s = "+" + s
-
- p = s.find('.')
- s += "0"*( 1 + num_zeros - ( len(s) - p ))
- s += " "*( 9 - ( len(s) - p ))
- s = " "*( 5 - ( p )) + s
- return s
-
-
from version import ELECTRUM_VERSION, SEED_VERSION
-
class Wallet:
def __init__(self, config={}):
self.config = config
self.electrum_version = ELECTRUM_VERSION
- self.update_callbacks = []
# saved fields
self.seed_version = config.get('seed_version', SEED_VERSION)
self.addresses = config.get('addresses', []) # receiving addresses visible for user
self.change_addresses = config.get('change_addresses', []) # addresses used as change
self.seed = config.get('seed', '') # encrypted
- self.history = config.get('history',{})
self.labels = config.get('labels',{}) # labels for addresses and transactions
self.aliases = config.get('aliases', {}) # aliases for addresses
self.authorities = config.get('authorities', {}) # trusted addresses
self.receipts = config.get('receipts',{}) # signed URIs
self.addressbook = config.get('contacts', []) # outgoing addresses, for payments
self.imported_keys = config.get('imported_keys',{})
-
+ self.history = config.get('addr_history',{}) # address -> list(txid, height)
+ self.transactions = config.get('transactions',{}) # txid -> deserialised
# not saved
+ self.prevout_values = {}
+ self.spent_outputs = []
self.receipt = None # next receipt
- self.tx_history = {}
- self.was_updated = True
- self.blocks = -1
self.banner = ''
+ # spv
+ self.verifier = None
+
# there is a difference between wallet.up_to_date and interface.is_up_to_date()
# interface.is_up_to_date() returns true when all requests have been answered and processed
# wallet.up_to_date is true when the wallet is synchronized (stronger requirement)
self.lock = threading.Lock()
self.tx_event = threading.Event()
- self.update_tx_history()
if self.seed_version != SEED_VERSION:
raise ValueError("This wallet seed is deprecated. Please run upgrade.py for a diagnostic.")
+ for tx_hash in self.transactions.keys():
+ self.update_tx_outputs(tx_hash)
- def register_callback(self, update_callback):
- with self.lock:
- self.update_callbacks.append(update_callback)
- def trigger_callbacks(self):
- with self.lock:
- callbacks = self.update_callbacks[:]
- [update() for update in callbacks]
+ def init_up_to_date(self):
+ self.up_to_date_event.clear()
+ self.up_to_date = False
def import_key(self, keypair, password):
if value >= self.gap_limit:
self.gap_limit = value
self.save()
- self.interface.poke()
+ self.interface.poke('synchronizer')
return True
elif value >= self.min_acceptable_gap():
if len(self.addresses) < n:
new_addresses.append( self.create_new_address(False) )
continue
- if map( lambda a: self.history.get(a), self.addresses[-n:] ) == n*[[]]:
+ if map( lambda a: self.history.get(a, []), self.addresses[-n:] ) == n*[[]]:
break
else:
new_addresses.append( self.create_new_address(False) )
return (len(self.change_addresses) > 1 ) or ( len(self.addresses) > self.gap_limit )
def fill_addressbook(self):
- for tx in self.tx_history.values():
- if tx['value']<0:
- for i in tx['outputs']:
- if not self.is_mine(i) and i not in self.addressbook:
- self.addressbook.append(i)
+ for tx_hash, tx in self.transactions.items():
+ if self.get_tx_value(tx_hash)<0:
+ for o in tx['outputs']:
+ addr = o.get('address')
+ if not self.is_mine(addr) and addr not in self.addressbook:
+ self.addressbook.append(addr)
# redo labels
- self.update_tx_labels()
+ # self.update_tx_labels()
def get_address_flags(self, addr):
return flags
+ def get_tx_value(self, tx_hash, addresses = None):
+ # return the balance for that tx
+ if addresses is None: addresses = self.all_addresses()
+ with self.lock:
+ v = 0
+ d = self.transactions.get(tx_hash)
+ if not d: return 0
+ for item in d.get('inputs'):
+ addr = item.get('address')
+ if addr in addresses:
+ key = item['prevout_hash'] + ':%d'%item['prevout_n']
+ value = self.prevout_values.get( key )
+ if value is None: continue
+ v -= value
+ for item in d.get('outputs'):
+ addr = item.get('address')
+ if addr in addresses:
+ value = item.get('value')
+ v += value
+ return v
+
+
+
+ def update_tx_outputs(self, tx_hash):
+ tx = self.transactions.get(tx_hash)
+ for item in tx.get('outputs'):
+ value = item.get('value')
+ key = tx_hash+ ':%d'%item.get('index')
+ with self.lock:
+ self.prevout_values[key] = value
+
+ for item in tx.get('inputs'):
+ if self.is_mine(item.get('address')):
+ key = item['prevout_hash'] + ':%d'%item['prevout_n']
+ self.spent_outputs.append(key)
+
+
def get_addr_balance(self, addr):
assert self.is_mine(addr)
h = self.history.get(addr,[])
+ if h == ['*']: return 0,0
c = u = 0
- for item in h:
- v = item['value']
- if item['height']:
+ for tx_hash, tx_height in h:
+ v = self.get_tx_value(tx_hash, [addr])
+ if tx_height:
c += v
else:
u += v
if i in domain: domain.remove(i)
for addr in domain:
- h = self.history.get(addr)
- if h is None: continue
- for item in h:
- if item.get('raw_output_script'):
- coins.append( (addr,item))
-
- coins = sorted( coins, key = lambda x: x[1]['timestamp'] )
+ h = self.history.get(addr, [])
+ if h == ['*']: continue
+ for tx_hash, tx_height in h:
+ tx = self.transactions.get(tx_hash)
+ for output in tx.get('outputs'):
+ if output.get('address') != addr: continue
+ key = tx_hash + ":%d" % output.get('index')
+ if key in self.spent_outputs: continue
+ output['tx_hash'] = tx_hash
+ coins.append(output)
+
+ #coins = sorted( coins, key = lambda x: x[1]['timestamp'] )
for addr in self.prioritized_addresses:
- h = self.history.get(addr)
- if h is None: continue
- for item in h:
- if item.get('raw_output_script'):
- prioritized_coins.append( (addr,item))
-
- prioritized_coins = sorted( prioritized_coins, key = lambda x: x[1]['timestamp'] )
+ h = self.history.get(addr, [])
+ if h == ['*']: continue
+ for tx_hash, tx_height in h:
+ for output in tx.get('outputs'):
+ if output.get('address') != addr: continue
+ key = tx_hash + ":%d" % output.get('index')
+ if key in self.spent_outputs: continue
+ output['tx_hash'] = tx_hash
+ prioritized_coins.append(output)
+
+ #prioritized_coins = sorted( prioritized_coins, key = lambda x: x[1]['timestamp'] )
inputs = []
coins = prioritized_coins + coins
- for c in coins:
- addr, item = c
+ for item in coins:
+ addr = item.get('address')
v = item.get('value')
total += v
inputs.append((addr, v, item['tx_hash'], item['index'], item['raw_output_script'], None, None) )
else:
return s
- def get_status(self, address):
- h = self.history.get(address)
- if not h:
- status = None
- else:
- lastpoint = h[-1]
- status = lastpoint['block_hash']
- if status == 'mempool':
- status = status + ':%d'% len(h)
- return status
- def receive_status_callback(self, addr, status):
+ def get_history(self, address):
with self.lock:
- if self.get_status(addr) != status:
- #print "updating status for", addr, status
- self.interface.get_history(addr)
+ return self.history.get(address)
+
+ def get_status(self, h):
+ if not h: return None
+ if h == ['*']: return '*'
+ status = ''
+ for tx_hash, height in h:
+ status += tx_hash + ':%d:' % height
+ return hashlib.sha256( status ).digest().encode('hex')
+
- def receive_history_callback(self, addr, data):
- #print "updating history for", addr
+
+ def receive_tx_callback(self, tx_hash, tx):
+
+ if not self.check_new_tx(tx_hash, tx):
+ raise BaseException("error: received transaction is not consistent with history"%tx_hash)
+
+ with self.lock:
+ self.transactions[tx_hash] = tx
+
+ tx_height = tx.get('height')
+ if tx_height>0: self.verifier.add(tx_hash, tx_height)
+
+ self.update_tx_outputs(tx_hash)
+
+ self.save()
+
+
+ def receive_history_callback(self, addr, hist):
+
+ if hist != ['*']:
+ if not self.check_new_history(addr, hist):
+ raise BaseException("error: received history for %s is not consistent with known transactions"%addr)
+
with self.lock:
- self.history[addr] = data
- self.update_tx_history()
+ self.history[addr] = hist
self.save()
+ if hist != ['*']:
+ for tx_hash, tx_height in hist:
+ if tx_height>0:
+ # add it in case it was previously unconfirmed
+ self.verifier.add(tx_hash, tx_height)
+ # set the height in case it changed
+ tx = self.transactions.get(tx_hash)
+ if tx:
+ if tx.get('height') != tx_height:
+ print_error( "changing height for tx", tx_hash )
+ tx['height'] = tx_height
+
+
def get_tx_history(self):
- lines = self.tx_history.values()
+ with self.lock:
+ lines = self.transactions.values()
+
lines = sorted(lines, key=operator.itemgetter("timestamp"))
return lines
- def update_tx_history(self):
- self.tx_history= {}
- for addr in self.all_addresses():
- h = self.history.get(addr)
- if h is None: continue
- for tx in h:
- tx_hash = tx['tx_hash']
- line = self.tx_history.get(tx_hash)
- if not line:
- self.tx_history[tx_hash] = copy.copy(tx)
- line = self.tx_history.get(tx_hash)
- else:
- line['value'] += tx['value']
- if line['height'] == 0:
- line['timestamp'] = 1e12
- self.update_tx_labels()
+ def get_transactions_at_height(self, height):
+ with self.lock:
+ values = self.transactions.values()[:]
+
+ out = []
+ for tx in values:
+ if tx['height'] == height:
+ out.append(tx['tx_hash'])
+ return out
+
+
+ def get_label(self, tx_hash):
+ label = self.labels.get(tx_hash)
+ is_default = (label == '') or (label is None)
+ if is_default: label = self.get_default_label(tx_hash)
+ return label, is_default
- def update_tx_labels(self):
- for tx in self.tx_history.values():
+ def get_default_label(self, tx_hash):
+ tx = self.transactions.get(tx_hash)
+ if tx:
default_label = ''
- if tx['value']<0:
- for o_addr in tx['outputs']:
+ if self.get_tx_value(tx_hash)<0:
+ for o in tx['outputs']:
+ o_addr = o.get('address')
if not self.is_mine(o_addr):
try:
default_label = self.labels[o_addr]
except KeyError:
default_label = o_addr
else:
- for o_addr in tx['outputs']:
+ for o in tx['outputs']:
+ o_addr = o.get('address')
if self.is_mine(o_addr) and not self.is_change(o_addr):
break
else:
- for o_addr in tx['outputs']:
+ for o in tx['outputs']:
+ o_addr = o.get('address')
if self.is_mine(o_addr):
break
else:
except KeyError:
default_label = o_addr
- tx['default_label'] = default_label
+ return default_label
+
def mktx(self, to_address, amount, label, password, fee=None, change_addr=None, from_addr= None):
if not self.is_valid(to_address):
# asynchronous
self.tx_event.clear()
tx_hash = Hash(tx.decode('hex') )[::-1].encode('hex')
- self.interface.send([('blockchain.transaction.broadcast', [tx])])
+ self.interface.send([('blockchain.transaction.broadcast', [tx])], 'synchronizer')
return tx_hash
def receive_tx(self,tx_hash):
def update(self):
- self.interface.poke()
+ self.interface.poke('synchronizer')
self.up_to_date_event.wait(10000000000)
- def start_session(self, interface):
- self.interface = interface
- self.interface.send([('server.banner',[]), ('blockchain.numblocks.subscribe',[]), ('server.peers.subscribe',[])])
- self.interface.subscribe(self.all_addresses())
-
-
def freeze(self,addr):
if addr in self.all_addresses() and addr not in self.frozen_addresses:
self.unprioritize(addr)
'seed': self.seed,
'addresses': self.addresses,
'change_addresses': self.change_addresses,
- 'history': self.history,
+ 'addr_history': self.history,
'labels': self.labels,
'contacts': self.addressbook,
'imported_keys': self.imported_keys,
'frozen_addresses': self.frozen_addresses,
'prioritized_addresses': self.prioritized_addresses,
'gap_limit': self.gap_limit,
+ 'transactions': self.transactions,
}
for k, v in s.items():
self.config.set_key(k,v)
self.config.save()
+
+ def set_verifier(self, verifier):
+ self.verifier = verifier
+
+ # review transactions (they might not all be in history)
+ for tx_hash, tx in self.transactions.items():
+ tx_height = tx.get('height')
+ if tx_height <1:
+ print_error( "skipping", tx_hash, tx_height )
+ continue
+
+ if tx_height>0:
+ self.verifier.add(tx_hash, tx_height)
+
+ # set the timestamp for transactions that need it
+ if tx and not tx.get('timestamp'):
+ timestamp = self.verifier.get_timestamp(tx_height)
+ if timestamp:
+ self.set_tx_timestamp(tx_hash, timestamp)
+
+
+ # review existing history
+ for addr, hist in self.history.items():
+ if hist == ['*']: continue
+ for tx_hash, tx_height in hist:
+ if tx_height>0:
+ # add it in case it was previously unconfirmed
+ self.verifier.add(tx_hash, tx_height)
+ # set the height in case it changed
+ tx = self.transactions.get(tx_hash)
+ if tx:
+ if tx.get('height') != tx_height:
+ print_error( "changing height for tx", tx_hash )
+ tx['height'] = tx_height
+
+
+
+ def set_tx_timestamp(self, tx_hash, timestamp):
+ with self.lock:
+ self.transactions[tx_hash]['timestamp'] = timestamp
+
+
+
+ def is_addr_in_tx(self, addr, tx):
+ found = False
+ for txin in tx.get('inputs'):
+ if addr == txin.get('address'):
+ found = True
+ break
+ for txout in tx.get('outputs'):
+ if addr == txout.get('address'):
+ found = True
+ break
+ return found
+
+
+ def check_new_history(self, addr, hist):
+ # - check that all tx in hist are relevant
+ for tx_hash, height in hist:
+ tx = self.transactions.get(tx_hash)
+ if not tx: continue
+ if not self.is_addr_in_tx(addr,tx):
+ return False
+
+ # todo: check that we are not "orphaning" a transaction
+ # if we are, reject tx if unconfirmed, else reject the server
+
+ return True
+
+
+
+ def check_new_tx(self, tx_hash, tx):
+ # 1 check that tx is referenced in addr_history.
+ addresses = []
+ for addr, hist in self.history.items():
+ if hist == ['*']:continue
+ for txh, height in hist:
+ if txh == tx_hash:
+ addresses.append(addr)
+
+ if not addresses:
+ return False
+
+ # 2 check that referencing addresses are in the tx
+ for addr in addresses:
+ if not self.is_addr_in_tx(addr, tx):
+ return False
+
+ return True
+
+
+
+
+class WalletSynchronizer(threading.Thread):
+
+
+ def __init__(self, wallet, config):
+ threading.Thread.__init__(self)
+ self.daemon = True
+ self.wallet = wallet
+ self.interface = self.wallet.interface
+ self.interface.register_channel('synchronizer')
+ self.wallet.interface.register_callback('connected', self.wallet.init_up_to_date)
+ self.wallet.interface.register_callback('connected', lambda: self.interface.send([('server.banner',[])],'synchronizer') )
+ self.was_updated = True
+
+ def synchronize_wallet(self):
+ new_addresses = self.wallet.synchronize()
+ if new_addresses:
+ self.subscribe_to_addresses(new_addresses)
+ self.wallet.up_to_date = False
+ return
+
+ if not self.interface.is_up_to_date('synchronizer'):
+ if self.wallet.up_to_date:
+ self.wallet.up_to_date = False
+ self.was_updated = True
+ return
+
+ self.wallet.up_to_date = True
+ self.was_updated = True
+ self.wallet.up_to_date_event.set()
+
+
+ def subscribe_to_addresses(self, addresses):
+ messages = []
+ for addr in addresses:
+ messages.append(('blockchain.address.subscribe', [addr]))
+ self.interface.send( messages, 'synchronizer')
+
+
+ def run(self):
+ requested_tx = []
+ missing_tx = []
+ requested_histories = {}
+
+ # request any missing transactions
+ for history in self.wallet.history.values():
+ if history == ['*']: continue
+ for tx_hash, tx_height in history:
+ if self.wallet.transactions.get(tx_hash) is None and (tx_hash, tx_height) not in missing_tx:
+ missing_tx.append( (tx_hash, tx_height) )
+ print_error("missing tx", missing_tx)
+
+ # wait until we are connected, in case the user is not connected
+ while not self.interface.is_connected:
+ time.sleep(1)
+
+ # request banner, because 'connected' event happens before this thread is started
+ self.interface.send([('server.banner',[])],'synchronizer')
+
+ # subscriptions
+ self.subscribe_to_addresses(self.wallet.all_addresses())
+
+ while True:
+ # 1. send new requests
+ self.synchronize_wallet()
+
+ for tx_hash, tx_height in missing_tx:
+ if (tx_hash, tx_height) not in requested_tx:
+ self.interface.send([ ('blockchain.transaction.get',[tx_hash, tx_height]) ], 'synchronizer')
+ requested_tx.append( (tx_hash, tx_height) )
+ missing_tx = []
+
+ if self.was_updated:
+ self.interface.trigger_callback('updated')
+ self.was_updated = False
+
+ # 2. get a response
+ r = self.interface.get_response('synchronizer')
+ if not r:
+ continue
+
+ # 3. handle response
+ method = r['method']
+ params = r['params']
+ result = r.get('result')
+ error = r.get('error')
+ if error:
+ print "error", r
+ continue
+
+ if method == 'blockchain.address.subscribe':
+ addr = params[0]
+ if self.wallet.get_status(self.wallet.get_history(addr)) != result:
+ self.interface.send([('blockchain.address.get_history', [addr])], 'synchronizer')
+ requested_histories[addr] = result
+
+ elif method == 'blockchain.address.get_history':
+ addr = params[0]
+ print_error("receiving history", addr, result)
+ if result == ['*']:
+ assert requested_histories.pop(addr) == '*'
+ self.wallet.receive_history_callback(addr, result)
+ else:
+ hist = []
+ # check that txids are unique
+ txids = []
+ for item in result:
+ tx_hash = item['tx_hash']
+ if tx_hash not in txids:
+ txids.append(tx_hash)
+ hist.append( (tx_hash, item['height']) )
+
+ if len(hist) != len(result):
+ raise BaseException("error: server sent history with non-unique txid", result)
+
+ # check that the status corresponds to what was announced
+ rs = requested_histories.pop(addr)
+ if self.wallet.get_status(hist) != rs:
+ raise BaseException("error: status mismatch: %s"%addr)
+
+ # store received history
+ self.wallet.receive_history_callback(addr, hist)
+
+ # request transactions that we don't have
+ for tx_hash, tx_height in hist:
+ if self.wallet.transactions.get(tx_hash) is None:
+ if (tx_hash, tx_height) not in requested_tx and (tx_hash, tx_height) not in missing_tx:
+ missing_tx.append( (tx_hash, tx_height) )
+ else:
+ timestamp = self.wallet.verifier.get_timestamp(tx_height)
+ self.wallet.set_tx_timestamp(tx_hash, timestamp)
+
+ elif method == 'blockchain.transaction.get':
+ tx_hash = params[0]
+ tx_height = params[1]
+ d = self.deserialize_tx(tx_hash, tx_height, result)
+ self.wallet.receive_tx_callback(tx_hash, d)
+ self.was_updated = True
+ requested_tx.remove( (tx_hash, tx_height) )
+ print_error("received tx:", d)
+
+ elif method == 'blockchain.transaction.broadcast':
+ self.wallet.tx_result = result
+ self.wallet.tx_event.set()
+
+ elif method == 'server.banner':
+ self.wallet.banner = result
+ self.was_updated = True
+
+ else:
+ print_error("Error: Unknown message:" + method + ", " + repr(params) + ", " + repr(result) )
+
+ if self.was_updated and not requested_tx:
+ self.interface.trigger_callback('updated')
+ self.was_updated = False
+
+
+ def deserialize_tx(self, tx_hash, tx_height, raw_tx):
+
+ assert tx_hash == hash_encode(Hash(raw_tx.decode('hex')))
+ import deserialize
+ vds = deserialize.BCDataStream()
+ vds.write(raw_tx.decode('hex'))
+ d = deserialize.parse_Transaction(vds)
+ d['height'] = tx_height
+ d['tx_hash'] = tx_hash
+ d['timestamp'] = self.wallet.verifier.get_timestamp(tx_height)
+ return d
+
git://git.novaco.in / electrum-nvc.git / blobdiff