3 # Electrum - lightweight Bitcoin client
4 # Copyright (C) 2011 thomasv@gitorious
6 # This program is free software: you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation, either version 3 of the License, or
9 # (at your option) any later version.
11 # This program is distributed in the hope that it will be useful,
12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 # GNU General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with this program. If not, see <http://www.gnu.org/licenses/>.
33 from util import print_msg, print_error, user_dir, format_satoshis
38 EncodeAES = lambda secret, s: base64.b64encode(aes.encryptData(secret,s))
39 DecodeAES = lambda secret, e: aes.decryptData(secret, base64.b64decode(e))
41 def pw_encode(s, password):
43 secret = Hash(password)
44 return EncodeAES(secret, s)
48 def pw_decode(s, password):
49 if password is not None:
50 secret = Hash(password)
52 d = DecodeAES(secret, s)
54 raise BaseException('Invalid password')
63 from version import ELECTRUM_VERSION, SEED_VERSION
67 def __init__(self, config={}):
70 self.electrum_version = ELECTRUM_VERSION
71 self.gap_limit_for_change = 3 # constant
74 self.seed_version = config.get('seed_version', SEED_VERSION)
75 self.gap_limit = config.get('gap_limit', 5)
76 self.use_change = config.get('use_change',True)
77 self.fee = int(config.get('fee_per_kb',20000))
78 self.num_zeros = int(config.get('num_zeros',0))
79 self.use_encryption = config.get('use_encryption', False)
80 self.seed = config.get('seed', '') # encrypted
81 self.labels = config.get('labels', {})
82 self.frozen_addresses = config.get('frozen_addresses',[])
83 self.prioritized_addresses = config.get('prioritized_addresses',[])
84 self.addressbook = config.get('contacts', [])
85 self.imported_keys = config.get('imported_keys',{})
86 self.history = config.get('addr_history',{}) # address -> list(txid, height)
87 self.accounts = config.get('accounts', {}) # this should not include public keys
89 self.SequenceClass = ElectrumSequence
91 self.sequences[0] = self.SequenceClass(self.config.get('master_public_key'))
93 if self.accounts.get(0) is None:
94 self.accounts[0] = { 0:[], 1:[], 'name':'Main account' }
96 self.transactions = {}
97 tx = config.get('transactions',{})
99 for k,v in tx.items(): self.transactions[k] = Transaction(v)
101 print_msg("Warning: Cannot deserialize transactions. skipping")
104 self.prevout_values = {} # my own transaction outputs
105 self.spent_outputs = []
110 # there is a difference between wallet.up_to_date and interface.is_up_to_date()
111 # interface.is_up_to_date() returns true when all requests have been answered and processed
112 # wallet.up_to_date is true when the wallet is synchronized (stronger requirement)
114 self.up_to_date = False
115 self.lock = threading.Lock()
116 self.transaction_lock = threading.Lock()
117 self.tx_event = threading.Event()
119 if self.seed_version != SEED_VERSION:
120 raise ValueError("This wallet seed is deprecated. Please run upgrade.py for a diagnostic.")
122 for tx_hash in self.transactions.keys():
123 self.update_tx_outputs(tx_hash)
126 def set_up_to_date(self,b):
127 with self.lock: self.up_to_date = b
129 def is_up_to_date(self):
130 with self.lock: return self.up_to_date
133 self.up_to_date = False
134 self.interface.poke('synchronizer')
135 while not self.is_up_to_date(): time.sleep(0.1)
137 def import_key(self, sec, password):
139 seed = self.decode_seed(password)
140 address = address_from_private_key(sec)
142 if self.is_mine(address):
143 raise BaseException('Address already in wallet')
145 # store the originally requested keypair into the imported keys table
146 self.imported_keys[address] = pw_encode(sec, password )
147 self.config.set_key('imported_keys', self.imported_keys, True)
150 def delete_imported_key(self, addr):
151 if addr in self.imported_keys:
152 self.imported_keys.pop(addr)
153 self.config.set_key('imported_keys', self.imported_keys, True)
156 def init_seed(self, seed):
157 if self.seed: raise BaseException("a seed exists")
159 seed = random_seed(128)
163 self.config.set_key('seed', self.seed, True)
164 self.config.set_key('seed_version', self.seed_version, True)
165 mpk = self.SequenceClass.mpk_from_seed(self.seed)
166 self.init_sequence(mpk)
169 def init_sequence(self, mpk):
170 self.config.set_key('master_public_key', mpk, True)
171 self.sequences[0] = self.SequenceClass(mpk)
172 self.accounts[0] = { 0:[], 1:[], 'name':'Main account' }
173 self.config.set_key('accounts', self.accounts, True)
176 def addresses(self, include_change = True):
177 o = self.get_account_addresses(-1, include_change)
178 for a in self.accounts.keys():
179 o += self.get_account_addresses(a, include_change)
183 def is_mine(self, address):
184 return address in self.addresses(True)
186 def is_change(self, address):
187 if not self.is_mine(address): return False
188 if address in self.imported_keys.keys(): return False
189 acct, s = self.get_address_index(address)
192 def get_master_public_key(self):
193 return self.config.get("master_public_key")
195 def get_address_index(self, address):
196 if address in self.imported_keys.keys():
198 for account in self.accounts.keys():
199 for for_change in [0,1]:
200 addresses = self.accounts[account][for_change]
201 for addr in addresses:
203 return account, (for_change, addresses.index(addr))
204 raise BaseException("not found")
207 def get_public_key(self, address):
208 account, sequence = self.get_address_index(address)
209 return self.sequences[account].get_pubkey( sequence )
212 def decode_seed(self, password):
213 seed = pw_decode(self.seed, password)
214 self.sequences[0].check_seed(seed)
217 def get_private_key(self, address, password):
218 return self.get_private_keys([address], password).get(address)
220 def get_private_keys(self, addresses, password):
221 if not self.seed: return {}
222 # decode seed in any case, in order to test the password
223 seed = self.decode_seed(password)
227 for address in addresses:
228 if address in self.imported_keys.keys():
229 out[address] = pw_decode( self.imported_keys[address], password )
231 account, sequence = self.get_address_index(address)
233 l_sequences.append(sequence)
234 l_addresses.append(address)
236 pk = self.sequences[0].get_private_keys(l_sequences, seed)
237 for i, address in enumerate(l_addresses): out[address] = pk[i]
241 def signrawtransaction(self, tx, input_info, private_keys, password):
242 unspent_coins = self.get_unspent_coins()
243 seed = self.decode_seed(password)
245 # convert private_keys to dict
247 for sec in private_keys:
248 address = address_from_private_key(sec)
252 for txin in tx.inputs:
253 # convert to own format
254 txin['tx_hash'] = txin['prevout_hash']
255 txin['index'] = txin['prevout_n']
257 for item in input_info:
258 if item.get('txid') == txin['tx_hash'] and item.get('vout') == txin['index']:
259 txin['raw_output_script'] = item['scriptPubKey']
260 txin['redeemScript'] = item.get('redeemScript')
261 txin['KeyID'] = item.get('KeyID')
264 for item in unspent_coins:
265 if txin['tx_hash'] == item['tx_hash'] and txin['index'] == item['index']:
266 txin['raw_output_script'] = item['raw_output_script']
269 # if neither, we might want to get it from the server..
273 if txin.get('KeyID'):
274 account, name, sequence = txin.get('KeyID')
275 if name != 'Electrum': continue
276 sec = self.sequences[account].get_private_key(sequence, seed)
277 addr = self.sequences[account].get_address(sequence)
278 txin['address'] = addr
279 private_keys[addr] = sec
281 elif txin.get("redeemScript"):
282 txin['address'] = hash_160_to_bc_address(hash_160(txin.get("redeemScript").decode('hex')), 5)
284 elif txin.get("raw_output_script"):
286 addr = deserialize.get_address_from_output_script(txin.get("raw_output_script").decode('hex'))
287 sec = self.get_private_key(addr, password)
289 private_keys[addr] = sec
290 txin['address'] = addr
292 tx.sign( private_keys )
294 def sign_message(self, address, message, password):
295 sec = self.get_private_key(address, password)
296 key = regenerate_key(sec)
297 compressed = is_compressed(sec)
298 return key.sign_message(message, compressed, address)
300 def verify_message(self, address, signature, message):
302 EC_KEY.verify_message(address, signature, message)
304 except BaseException as e:
305 print_error("Verification error: {0}".format(e))
308 def create_new_address(self, account, for_change):
309 addresses = self.accounts[account][for_change]
311 address = self.get_new_address( account, for_change, n)
312 self.accounts[account][for_change].append(address)
313 self.history[address] = []
318 def get_new_address(self, account, for_change, n):
319 return self.sequences[account].get_address((for_change, n))
323 def change_gap_limit(self, value):
324 if value >= self.gap_limit:
325 self.gap_limit = value
326 self.config.set_key('gap_limit', self.gap_limit, True)
327 self.interface.poke('synchronizer')
330 elif value >= self.min_acceptable_gap():
331 for key, account in self.accounts.items():
332 addresses = account[0]
333 k = self.num_unused_trailing_addresses(addresses)
334 n = len(addresses) - k + value
335 addresses = addresses[0:n]
336 self.accounts[key][0] = addresses
338 self.gap_limit = value
344 def num_unused_trailing_addresses(self, addresses):
346 for a in addresses[::-1]:
347 if self.history.get(a):break
351 def min_acceptable_gap(self):
352 # fixme: this assumes wallet is synchronized
356 for account in self.accounts.values():
357 addresses = account[0]
358 k = self.num_unused_trailing_addresses(addresses)
359 for a in addresses[0:-k]:
360 if self.history.get(a):
364 if n > nmax: nmax = n
368 def address_is_old(self, address):
370 h = self.history.get(address, [])
373 for tx_hash, tx_height in h:
377 tx_age = self.verifier.height - tx_height + 1
383 def synchronize_sequence(self, account, for_change):
384 limit = self.gap_limit_for_change if for_change else self.gap_limit
385 addresses = self.accounts[account][for_change]
388 if len(addresses) < limit:
389 new_addresses.append( self.create_new_address(account, for_change) )
391 if map( lambda a: self.address_is_old(a), addresses[-limit:] ) == limit*[False]:
394 new_addresses.append( self.create_new_address(account, for_change) )
398 def synchronize_account(self, account):
400 new += self.synchronize_sequence(account, 0)
401 new += self.synchronize_sequence(account, 1)
404 def synchronize(self):
406 for account in self.accounts.keys():
407 new += self.synchronize_account(account)
412 return self.history.values() != [[]] * len(self.history)
415 def fill_addressbook(self):
416 for tx_hash, tx in self.transactions.items():
417 is_relevant, is_send, _, _ = self.get_tx_value(tx)
419 for addr, v in tx.outputs:
420 if not self.is_mine(addr) and addr not in self.addressbook:
421 self.addressbook.append(addr)
423 # self.update_tx_labels()
425 def get_num_tx(self, address):
427 for tx in self.transactions.values():
428 if address in map(lambda x:x[0], tx.outputs): n += 1
432 def get_address_flags(self, addr):
433 flags = "C" if self.is_change(addr) else "I" if addr in self.imported_keys.keys() else "-"
434 flags += "F" if addr in self.frozen_addresses else "P" if addr in self.prioritized_addresses else "-"
438 def get_tx_value(self, tx, account=None):
439 domain = self.get_account_addresses(account)
440 return tx.get_value(domain, self.prevout_values)
443 def update_tx_outputs(self, tx_hash):
444 tx = self.transactions.get(tx_hash)
446 for i, (addr, value) in enumerate(tx.outputs):
447 key = tx_hash+ ':%d'%i
448 self.prevout_values[key] = value
450 for item in tx.inputs:
451 if self.is_mine(item.get('address')):
452 key = item['prevout_hash'] + ':%d'%item['prevout_n']
453 self.spent_outputs.append(key)
456 def get_addr_balance(self, address):
457 assert self.is_mine(address)
458 h = self.history.get(address,[])
459 if h == ['*']: return 0,0
461 received_coins = [] # list of coins received at address
463 for tx_hash, tx_height in h:
464 tx = self.transactions.get(tx_hash)
467 for i, (addr, value) in enumerate(tx.outputs):
469 key = tx_hash + ':%d'%i
470 received_coins.append(key)
472 for tx_hash, tx_height in h:
473 tx = self.transactions.get(tx_hash)
477 for item in tx.inputs:
478 addr = item.get('address')
480 key = item['prevout_hash'] + ':%d'%item['prevout_n']
481 value = self.prevout_values.get( key )
482 if key in received_coins:
485 for i, (addr, value) in enumerate(tx.outputs):
486 key = tx_hash + ':%d'%i
497 def get_accounts(self):
499 for k, account in self.accounts.items():
500 accounts[k] = account.get('name')
501 if self.imported_keys:
502 accounts[-1] = 'Imported keys'
505 def get_account_addresses(self, a, include_change=True):
507 o = self.addresses(True)
509 o = self.imported_keys.keys()
511 ac = self.accounts[a]
513 if include_change: o += ac[1]
516 def get_imported_balance(self):
518 for addr in self.imported_keys.keys():
519 c, u = self.get_addr_balance(addr)
524 def get_account_balance(self, account):
526 return self.get_balance()
528 return self.get_imported_balance()
531 for addr in self.get_account_addresses(account):
532 c, u = self.get_addr_balance(addr)
537 def get_frozen_balance(self):
539 for addr in self.frozen_addresses:
540 c, u = self.get_addr_balance(addr)
546 def get_balance(self):
548 for a in self.accounts.keys():
549 c, u = self.get_account_balance(a)
552 c, u = self.get_imported_balance()
558 def get_unspent_coins(self, domain=None):
560 if domain is None: domain = self.addresses(True)
562 h = self.history.get(addr, [])
563 if h == ['*']: continue
564 for tx_hash, tx_height in h:
565 tx = self.transactions.get(tx_hash)
566 if tx is None: raise BaseException("Wallet not synchronized")
567 for output in tx.d.get('outputs'):
568 if output.get('address') != addr: continue
569 key = tx_hash + ":%d" % output.get('index')
570 if key in self.spent_outputs: continue
571 output['tx_hash'] = tx_hash
577 def choose_tx_inputs( self, amount, fixed_fee, account = None ):
578 """ todo: minimize tx size """
580 fee = self.fee if fixed_fee is None else fixed_fee
581 domain = self.get_account_addresses(account)
583 prioritized_coins = []
584 for i in self.frozen_addresses:
585 if i in domain: domain.remove(i)
587 for i in self.prioritized_addresses:
588 if i in domain: domain.remove(i)
590 coins = self.get_unspent_coins(domain)
591 prioritized_coins = self.get_unspent_coins(self.prioritized_addresses)
594 coins = prioritized_coins + coins
597 addr = item.get('address')
598 v = item.get('value')
600 inputs.append( item )
601 fee = self.estimated_fee(inputs) if fixed_fee is None else fixed_fee
602 if total >= amount + fee: break
606 return inputs, total, fee
609 def estimated_fee(self, inputs):
610 estimated_size = len(inputs) * 180 + 80 # this assumes non-compressed keys
611 fee = self.fee * int(round(estimated_size/1024.))
612 if fee == 0: fee = self.fee
616 def add_tx_change( self, inputs, outputs, amount, fee, total, change_addr=None, account=0 ):
617 "add change to a transaction"
618 change_amount = total - ( amount + fee )
619 if change_amount != 0:
622 # send change to one of the accounts involved in the tx
623 address = inputs[0].get('address')
624 account, _ = self.get_address_index(address)
626 if not self.use_change or account == -1:
627 change_addr = inputs[-1]['address']
629 change_addr = self.accounts[account][1][-self.gap_limit_for_change]
631 # Insert the change output at a random position in the outputs
632 posn = random.randint(0, len(outputs))
633 outputs[posn:posn] = [( change_addr, change_amount)]
637 def get_history(self, address):
639 return self.history.get(address)
642 def get_status(self, h):
643 if not h: return None
644 if h == ['*']: return '*'
646 for tx_hash, height in h:
647 status += tx_hash + ':%d:' % height
648 return hashlib.sha256( status ).digest().encode('hex')
651 def receive_tx_callback(self, tx_hash, tx, tx_height):
653 if not self.check_new_tx(tx_hash, tx):
654 # may happen due to pruning
655 print_error("received transaction that is no longer referenced in history", tx_hash)
658 with self.transaction_lock:
659 self.transactions[tx_hash] = tx
660 if self.verifier and tx_height>0:
661 self.verifier.add(tx_hash, tx_height)
662 self.update_tx_outputs(tx_hash)
667 def receive_history_callback(self, addr, hist):
669 if not self.check_new_history(addr, hist):
670 raise BaseException("error: received history for %s is not consistent with known transactions"%addr)
673 self.history[addr] = hist
677 for tx_hash, tx_height in hist:
679 # add it in case it was previously unconfirmed
680 if self.verifier: self.verifier.add(tx_hash, tx_height)
683 def get_tx_history(self, account=None):
684 with self.transaction_lock:
685 history = self.transactions.items()
686 history.sort(key = lambda x: self.verifier.get_txpos(x[0]))
690 for tx_hash, tx in history:
691 is_relevant, is_mine, v, fee = self.get_tx_value(tx, account)
692 if v is not None: balance += v
694 c, u = self.get_account_balance(account)
697 result.append( ('', 1000, 0, c+u-balance, None, c+u-balance, None ) )
699 balance = c + u - balance
700 for tx_hash, tx in history:
701 is_relevant, is_mine, value, fee = self.get_tx_value(tx, account)
704 if value is not None:
707 conf, timestamp = self.verifier.get_confirmations(tx_hash) if self.verifier else (None, None)
708 result.append( (tx_hash, conf, is_mine, value, fee, balance, timestamp) )
713 def get_label(self, tx_hash):
714 label = self.labels.get(tx_hash)
715 is_default = (label == '') or (label is None)
716 if is_default: label = self.get_default_label(tx_hash)
717 return label, is_default
720 def get_default_label(self, tx_hash):
721 tx = self.transactions.get(tx_hash)
724 is_relevant, is_mine, _, _ = self.get_tx_value(tx)
728 if not self.is_mine(o_addr):
730 default_label = self.labels[o_addr]
732 default_label = o_addr
735 default_label = '(internal)'
739 if self.is_mine(o_addr) and not self.is_change(o_addr):
744 if self.is_mine(o_addr):
750 dest_label = self.labels.get(o_addr)
752 default_label = self.labels[o_addr]
754 default_label = o_addr
759 def mktx(self, outputs, password, fee=None, change_addr=None, account=None ):
763 None means use all accounts
764 -1 means imported keys
765 0, 1, etc are seed accounts
768 for address, x in outputs:
769 assert is_valid(address)
771 amount = sum( map(lambda x:x[1], outputs) )
773 inputs, total, fee = self.choose_tx_inputs( amount, fee, account )
775 raise ValueError("Not enough funds")
777 outputs = self.add_tx_change(inputs, outputs, amount, fee, total, change_addr, account)
779 tx = Transaction.from_io(inputs, outputs)
782 for i in range(len(tx.inputs)):
784 address = txin['address']
785 if address in self.imported_keys.keys():
786 pk_addresses.append(address)
788 account, sequence = self.get_address_index(address)
789 txin['KeyID'] = (account, 'Electrum', sequence) # used by the server to find the key
790 pk_addr, redeemScript = self.sequences[account].get_input_info(sequence)
791 if redeemScript: txin['redeemScript'] = redeemScript
792 pk_addresses.append(pk_addr)
794 # get all private keys at once.
796 private_keys = self.get_private_keys(pk_addresses, password)
797 tx.sign(private_keys)
799 for address, x in outputs:
800 if address not in self.addressbook and not self.is_mine(address):
801 self.addressbook.append(address)
807 def sendtx(self, tx):
811 return self.receive_tx(h)
813 def send_tx(self, tx):
815 self.tx_event.clear()
816 self.interface.send([('blockchain.transaction.broadcast', [str(tx)])], 'synchronizer')
819 def receive_tx(self,tx_hash):
822 return False, "error: " + out
827 def update_password(self, seed, old_password, new_password):
828 if new_password == '': new_password = None
829 # this will throw an exception if unicode cannot be converted
830 self.seed = pw_encode( seed, new_password)
831 self.config.set_key('seed', self.seed, True)
832 self.use_encryption = (new_password != None)
833 self.config.set_key('use_encryption', self.use_encryption,True)
834 for k in self.imported_keys.keys():
835 a = self.imported_keys[k]
836 b = pw_decode(a, old_password)
837 c = pw_encode(b, new_password)
838 self.imported_keys[k] = c
839 self.config.set_key('imported_keys', self.imported_keys, True)
842 def freeze(self,addr):
843 if self.is_mine(addr) and addr not in self.frozen_addresses:
844 self.unprioritize(addr)
845 self.frozen_addresses.append(addr)
846 self.config.set_key('frozen_addresses', self.frozen_addresses, True)
851 def unfreeze(self,addr):
852 if self.is_mine(addr) and addr in self.frozen_addresses:
853 self.frozen_addresses.remove(addr)
854 self.config.set_key('frozen_addresses', self.frozen_addresses, True)
859 def prioritize(self,addr):
860 if self.is_mine(addr) and addr not in self.prioritized_addresses:
862 self.prioritized_addresses.append(addr)
863 self.config.set_key('prioritized_addresses', self.prioritized_addresses, True)
868 def unprioritize(self,addr):
869 if self.is_mine(addr) and addr in self.prioritized_addresses:
870 self.prioritized_addresses.remove(addr)
871 self.config.set_key('prioritized_addresses', self.prioritized_addresses, True)
876 def set_fee(self, fee):
879 self.config.set_key('fee_per_kb', self.fee, True)
884 for k,v in self.transactions.items():
888 'use_change': self.use_change,
889 'fee_per_kb': self.fee,
890 'accounts': self.accounts,
891 'addr_history': self.history,
892 'labels': self.labels,
893 'contacts': self.addressbook,
894 'num_zeros': self.num_zeros,
895 'frozen_addresses': self.frozen_addresses,
896 'prioritized_addresses': self.prioritized_addresses,
897 'gap_limit': self.gap_limit,
900 for k, v in s.items():
901 self.config.set_key(k,v)
904 def set_verifier(self, verifier):
905 self.verifier = verifier
907 # review transactions that are in the history
908 for addr, hist in self.history.items():
909 if hist == ['*']: continue
910 for tx_hash, tx_height in hist:
912 # add it in case it was previously unconfirmed
913 self.verifier.add(tx_hash, tx_height)
916 # if we are on a pruning server, remove unverified transactions
917 vr = self.verifier.transactions.keys() + self.verifier.verified_tx.keys()
918 for tx_hash in self.transactions.keys():
919 if tx_hash not in vr:
920 self.transactions.pop(tx_hash)
924 def check_new_history(self, addr, hist):
926 # check that all tx in hist are relevant
928 for tx_hash, height in hist:
929 tx = self.transactions.get(tx_hash)
931 if not tx.has_address(addr):
934 # check that we are not "orphaning" a transaction
935 old_hist = self.history.get(addr,[])
936 if old_hist == ['*']: return True
938 for tx_hash, height in old_hist:
939 if tx_hash in map(lambda x:x[0], hist): continue
941 for _addr, _hist in self.history.items():
942 if _addr == addr: continue
943 if _hist == ['*']: continue
944 _tx_hist = map(lambda x:x[0], _hist)
945 if tx_hash in _tx_hist:
950 tx = self.transactions.get(tx_hash)
951 # tx might not be there
955 if self.verifier.get_height(tx_hash):
958 print_error("new history is orphaning transaction:", tx_hash)
959 # check that all outputs are not mine, request histories
961 for _addr, _v in tx.outputs:
962 # assert not self.is_mine(_addr)
963 ext_requests.append( ('blockchain.address.get_history', [_addr]) )
965 ext_h = self.interface.synchronous_get(ext_requests)
966 print_error("sync:", ext_requests, ext_h)
969 if h == ['*']: continue
971 if item.get('tx_hash') == tx_hash:
972 height = item.get('height')
974 print_error("found height for", tx_hash, height)
975 self.verifier.add(tx_hash, height)
977 print_error("removing orphaned tx from history", tx_hash)
978 self.transactions.pop(tx_hash)
984 def check_new_tx(self, tx_hash, tx):
985 # 1 check that tx is referenced in addr_history.
987 for addr, hist in self.history.items():
988 if hist == ['*']:continue
989 for txh, height in hist:
991 addresses.append(addr)
996 # 2 check that referencing addresses are in the tx
997 for addr in addresses:
998 if not tx.has_address(addr):
1006 class WalletSynchronizer(threading.Thread):
1009 def __init__(self, wallet, config):
1010 threading.Thread.__init__(self)
1012 self.wallet = wallet
1013 self.interface = self.wallet.interface
1014 self.interface.register_channel('synchronizer')
1015 self.wallet.interface.register_callback('connected', lambda: self.wallet.set_up_to_date(False))
1016 self.was_updated = True
1017 self.running = False
1018 self.lock = threading.Lock()
1021 with self.lock: self.running = False
1022 self.interface.poke('synchronizer')
1024 def is_running(self):
1025 with self.lock: return self.running
1028 def subscribe_to_addresses(self, addresses):
1030 for addr in addresses:
1031 messages.append(('blockchain.address.subscribe', [addr]))
1032 self.interface.send( messages, 'synchronizer')
1036 with self.lock: self.running = True
1040 requested_histories = {}
1042 # request any missing transactions
1043 for history in self.wallet.history.values():
1044 if history == ['*']: continue
1045 for tx_hash, tx_height in history:
1046 if self.wallet.transactions.get(tx_hash) is None and (tx_hash, tx_height) not in missing_tx:
1047 missing_tx.append( (tx_hash, tx_height) )
1048 print_error("missing tx", missing_tx)
1050 # wait until we are connected, in case the user is not connected
1051 while not self.interface.is_connected:
1055 self.subscribe_to_addresses(self.wallet.addresses(True))
1057 while self.is_running():
1058 # 1. create new addresses
1059 new_addresses = self.wallet.synchronize()
1061 # request missing addresses
1063 self.subscribe_to_addresses(new_addresses)
1065 # request missing transactions
1066 for tx_hash, tx_height in missing_tx:
1067 if (tx_hash, tx_height) not in requested_tx:
1068 self.interface.send([ ('blockchain.transaction.get',[tx_hash, tx_height]) ], 'synchronizer')
1069 requested_tx.append( (tx_hash, tx_height) )
1072 # detect if situation has changed
1073 if not self.interface.is_up_to_date('synchronizer'):
1074 if self.wallet.is_up_to_date():
1075 self.wallet.set_up_to_date(False)
1076 self.was_updated = True
1078 if not self.wallet.is_up_to_date():
1079 self.wallet.set_up_to_date(True)
1080 self.was_updated = True
1082 if self.was_updated:
1083 self.interface.trigger_callback('updated')
1084 self.was_updated = False
1087 r = self.interface.get_response('synchronizer')
1089 # poke sends None. (needed during stop)
1092 # 3. handle response
1093 method = r['method']
1094 params = r['params']
1095 result = r.get('result')
1096 error = r.get('error')
1101 if method == 'blockchain.address.subscribe':
1103 if self.wallet.get_status(self.wallet.get_history(addr)) != result:
1104 if requested_histories.get(addr) is None:
1105 self.interface.send([('blockchain.address.get_history', [addr])], 'synchronizer')
1106 requested_histories[addr] = result
1108 elif method == 'blockchain.address.get_history':
1110 print_error("receiving history", addr, result)
1112 assert requested_histories.pop(addr) == '*'
1113 self.wallet.receive_history_callback(addr, result)
1116 # check that txids are unique
1119 tx_hash = item['tx_hash']
1120 if tx_hash not in txids:
1121 txids.append(tx_hash)
1122 hist.append( (tx_hash, item['height']) )
1124 if len(hist) != len(result):
1125 raise BaseException("error: server sent history with non-unique txid", result)
1127 # check that the status corresponds to what was announced
1128 rs = requested_histories.pop(addr)
1129 if self.wallet.get_status(hist) != rs:
1130 raise BaseException("error: status mismatch: %s"%addr)
1132 # store received history
1133 self.wallet.receive_history_callback(addr, hist)
1135 # request transactions that we don't have
1136 for tx_hash, tx_height in hist:
1137 if self.wallet.transactions.get(tx_hash) is None:
1138 if (tx_hash, tx_height) not in requested_tx and (tx_hash, tx_height) not in missing_tx:
1139 missing_tx.append( (tx_hash, tx_height) )
1141 elif method == 'blockchain.transaction.get':
1143 tx_height = params[1]
1144 assert tx_hash == hash_encode(Hash(result.decode('hex')))
1145 tx = Transaction(result)
1146 self.wallet.receive_tx_callback(tx_hash, tx, tx_height)
1147 self.was_updated = True
1148 requested_tx.remove( (tx_hash, tx_height) )
1149 print_error("received tx:", tx_hash, len(tx.raw))
1151 elif method == 'blockchain.transaction.broadcast':
1152 self.wallet.tx_result = result
1153 self.wallet.tx_event.set()
1156 print_error("Error: Unknown message:" + method + ", " + repr(params) + ", " + repr(result) )
1158 if self.was_updated and not requested_tx:
1159 self.interface.trigger_callback('updated')
1160 self.was_updated = False