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, format_satoshis
36 from transaction import Transaction
39 EncodeAES = lambda secret, s: base64.b64encode(aes.encryptData(secret,s))
40 DecodeAES = lambda secret, e: aes.decryptData(secret, base64.b64decode(e))
42 def pw_encode(s, password):
44 secret = Hash(password)
45 return EncodeAES(secret, s)
49 def pw_decode(s, password):
50 if password is not None:
51 secret = Hash(password)
53 d = DecodeAES(secret, s)
55 raise BaseException('Invalid password')
64 from version import ELECTRUM_VERSION, SEED_VERSION
69 def __init__(self, config):
71 self.file_exists = False
72 self.init_path(config)
73 print_error( "wallet path", self.path )
78 def init_path(self, config):
79 """Set the path of the wallet."""
81 path = config.get('wallet_path')
83 path = config.get('default_wallet_path')
88 self.path = os.path.join(config.path, "electrum.dat")
92 """Read the contents of the wallet file."""
94 with open(self.path, "r") as f:
99 d = ast.literal_eval( data ) #parse raw data from reading wallet file
101 raise IOError("Cannot read wallet file.")
104 self.file_exists = True
107 def get(self, key, default=None):
108 return self.data.get(key, default)
110 def put(self, key, value, save = True):
112 if self.data.get(key) is not None:
113 self.data[key] = value
115 # add key to wallet config
116 self.data[key] = value
124 f = open(self.path,"w")
127 if self.get('gui') != 'android':
129 os.chmod(self.path,stat.S_IREAD | stat.S_IWRITE)
134 def __init__(self, storage):
136 self.storage = storage
137 self.electrum_version = ELECTRUM_VERSION
138 self.gap_limit_for_change = 3 # constant
141 self.seed_version = storage.get('seed_version', SEED_VERSION)
143 self.gap_limit = storage.get('gap_limit', 5)
144 self.use_change = storage.get('use_change',True)
145 self.use_encryption = storage.get('use_encryption', False)
146 self.seed = storage.get('seed', '') # encrypted
147 self.labels = storage.get('labels', {})
148 self.frozen_addresses = storage.get('frozen_addresses',[])
149 self.prioritized_addresses = storage.get('prioritized_addresses',[])
150 self.addressbook = storage.get('contacts', [])
152 self.imported_keys = storage.get('imported_keys',{})
153 self.history = storage.get('addr_history',{}) # address -> list(txid, height)
155 self.fee = int(storage.get('fee_per_kb',20000))
157 self.master_public_keys = storage.get('master_public_keys',{})
158 self.master_private_keys = storage.get('master_private_keys', {})
160 self.next_addresses = storage.get('next_addresses',{})
162 if self.seed_version < 4:
163 raise ValueError("This wallet seed is deprecated.")
167 self.transactions = {}
168 tx_list = self.storage.get('transactions',{})
169 for k,v in tx_list.items():
173 print_msg("Warning: Cannot deserialize transactions. skipping")
176 self.add_extra_addresses(tx)
177 self.transactions[k] = tx
179 for h,tx in self.transactions.items():
180 if not self.check_new_tx(h, tx):
181 print_error("removing unreferenced tx", h)
182 self.transactions.pop(h)
186 self.prevout_values = {} # my own transaction outputs
187 self.spent_outputs = []
192 # there is a difference between wallet.up_to_date and interface.is_up_to_date()
193 # interface.is_up_to_date() returns true when all requests have been answered and processed
194 # wallet.up_to_date is true when the wallet is synchronized (stronger requirement)
196 self.up_to_date = False
197 self.lock = threading.Lock()
198 self.transaction_lock = threading.Lock()
199 self.tx_event = threading.Event()
201 for tx_hash, tx in self.transactions.items():
202 self.update_tx_outputs(tx_hash)
205 def add_extra_addresses(self, tx):
207 # find the address corresponding to pay-to-pubkey inputs
208 tx.add_extra_addresses(self.transactions)
209 for o in tx.d.get('outputs'):
210 if o.get('is_pubkey'):
211 for tx2 in self.transactions.values():
212 tx2.add_extra_addresses({h:tx})
217 def set_up_to_date(self,b):
218 with self.lock: self.up_to_date = b
221 def is_up_to_date(self):
222 with self.lock: return self.up_to_date
226 self.up_to_date = False
227 while not self.is_up_to_date():
231 def import_key(self, sec, password):
233 seed = self.decode_seed(password)
235 address = address_from_private_key(sec)
237 raise BaseException('Invalid private key')
239 if self.is_mine(address):
240 raise BaseException('Address already in wallet')
242 # store the originally requested keypair into the imported keys table
243 self.imported_keys[address] = pw_encode(sec, password )
244 self.storage.put('imported_keys', self.imported_keys, True)
247 def delete_imported_key(self, addr):
248 if addr in self.imported_keys:
249 self.imported_keys.pop(addr)
250 self.storage.put('imported_keys', self.imported_keys, True)
253 def init_seed(self, seed):
254 if self.seed: raise BaseException("a seed exists")
256 seed = random_seed(128)
261 self.storage.put('seed', self.seed, True)
262 self.storage.put('seed_version', self.seed_version, True)
264 def create_watching_only_wallet(self, c0, K0):
266 self.master_public_keys = {
267 "m/0'/": (c0, K0, cK0),
269 self.storage.put('master_public_keys', self.master_public_keys, True)
270 self.create_account('1','Main account')
272 def create_accounts(self):
274 master_k, master_c, master_K, master_cK = bip32_init(self.seed)
277 k0, c0, K0, cK0 = bip32_private_derivation(master_k, master_c, "m/", "m/0'/")
279 k1, c1, K1, cK1 = bip32_private_derivation(master_k, master_c, "m/", "m/1'/")
280 k2, c2, K2, cK2 = bip32_private_derivation(master_k, master_c, "m/", "m/2'/")
282 k3, c3, K3, cK3 = bip32_private_derivation(master_k, master_c, "m/", "m/3'/")
283 k4, c4, K4, cK4 = bip32_private_derivation(master_k, master_c, "m/", "m/4'/")
284 k5, c5, K5, cK5 = bip32_private_derivation(master_k, master_c, "m/", "m/5'/")
286 self.master_public_keys = {
287 "m/0'/": (c0, K0, cK0),
288 "m/1'/": (c1, K1, cK1),
289 "m/2'/": (c2, K2, cK2),
290 "m/3'/": (c3, K3, cK3),
291 "m/4'/": (c4, K4, cK4),
292 "m/5'/": (c5, K5, cK5)
295 self.master_private_keys = {
304 self.storage.put('master_public_keys', self.master_public_keys, True)
305 self.storage.put('master_private_keys', self.master_private_keys, True)
307 # create default account
308 self.create_account('1','Main account')
311 def find_root_by_master_key(self, c, K):
312 for key, v in self.master_public_keys.items():
313 if key == "m/":continue
315 if (c == cc) and (K == KK):
318 def deseed_root(self, seed, password):
319 # for safety, we ask the user to enter their seed
320 assert seed == self.decode_seed(password)
322 self.storage.put('seed', '', True)
325 def deseed_branch(self, k):
326 # check that parent has no seed
327 assert self.seed == ''
328 self.master_private_keys.pop(k)
329 self.storage.put('master_private_keys', self.master_private_keys, True)
332 def account_id(self, account_type, i):
333 if account_type == '1':
335 elif account_type == '2of2':
336 return "m/1'/%d & m/2'/%d"%(i,i)
337 elif account_type == '2of3':
338 return "m/3'/%d & m/4'/%d & m/5'/%d"%(i,i,i)
340 raise BaseException('unknown account type')
343 def num_accounts(self, account_type):
344 keys = self.accounts.keys()
347 account_id = self.account_id(account_type, i)
348 if account_id not in keys: break
353 def new_account_address(self, account_type = '1'):
354 i = self.num_accounts(account_type)
355 k = self.account_id(account_type,i)
357 addr = self.next_addresses.get(k)
359 account_id, account = self.next_account(account_type)
360 addr = account.first_address()
361 self.next_addresses[k] = addr
362 self.storage.put('next_addresses',self.next_addresses)
367 def next_account(self, account_type = '1'):
369 i = self.num_accounts(account_type)
370 account_id = self.account_id(account_type,i)
372 if account_type is '1':
373 master_c0, master_K0, _ = self.master_public_keys["m/0'/"]
374 c0, K0, cK0 = bip32_public_derivation(master_c0.decode('hex'), master_K0.decode('hex'), "m/0'/", "m/0'/%d"%i)
375 account = BIP32_Account({ 'c':c0, 'K':K0, 'cK':cK0 })
377 elif account_type == '2of2':
378 master_c1, master_K1, _ = self.master_public_keys["m/1'/"]
379 c1, K1, cK1 = bip32_public_derivation(master_c1.decode('hex'), master_K1.decode('hex'), "m/1'/", "m/1'/%d"%i)
380 master_c2, master_K2, _ = self.master_public_keys["m/2'/"]
381 c2, K2, cK2 = bip32_public_derivation(master_c2.decode('hex'), master_K2.decode('hex'), "m/2'/", "m/2'/%d"%i)
382 account = BIP32_Account_2of2({ 'c':c1, 'K':K1, 'cK':cK1, 'c2':c2, 'K2':K2, 'cK2':cK2 })
384 elif account_type == '2of3':
385 master_c3, master_K3, _ = self.master_public_keys["m/3'/"]
386 c3, K3, cK3 = bip32_public_derivation(master_c3.decode('hex'), master_K3.decode('hex'), "m/3'/", "m/3'/%d"%i)
387 master_c4, master_K4, _ = self.master_public_keys["m/4'/"]
388 c4, K4, cK4 = bip32_public_derivation(master_c4.decode('hex'), master_K4.decode('hex'), "m/4'/", "m/4'/%d"%i)
389 master_c5, master_K5, _ = self.master_public_keys["m/5'/"]
390 c5, K5, cK5 = bip32_public_derivation(master_c5.decode('hex'), master_K5.decode('hex'), "m/5'/", "m/5'/%d"%i)
391 account = BIP32_Account_2of3({ 'c':c3, 'K':K3, 'cK':cK3, 'c2':c4, 'K2':K4, 'cK2':cK4, 'c3':c5, 'K3':K5, 'cK3':cK5 })
393 return account_id, account
396 def set_label(self, key, value):
397 self.labels[key] = value
398 self.storage.put('labels', self.labels, True)
401 def create_account(self, account_type = '1', name = None):
402 account_id, account = self.next_account(account_type)
403 self.accounts[account_id] = account
406 self.set_label(account_id, name)
409 def create_old_account(self):
410 mpk = OldAccount.mpk_from_seed(self.seed)
411 self.storage.put('master_public_key', mpk, True)
412 self.accounts[0] = OldAccount({'mpk':mpk, 0:[], 1:[]})
416 def save_accounts(self):
418 for k, v in self.accounts.items():
420 self.storage.put('accounts', d, True)
424 def load_accounts(self):
425 d = self.storage.get('accounts', {})
427 for k, v in d.items():
429 v['mpk'] = self.storage.get('master_public_key')
430 self.accounts[k] = OldAccount(v)
432 self.accounts[k] = BIP32_Account_2of2(v)
434 self.accounts[k] = BIP32_Account(v)
437 def addresses(self, include_change = True, next=False):
438 o = self.get_account_addresses(-1, include_change)
439 for a in self.accounts.keys():
440 o += self.get_account_addresses(a, include_change)
443 for addr in self.next_addresses.values():
449 def is_mine(self, address):
450 return address in self.addresses(True)
453 def is_change(self, address):
454 if not self.is_mine(address): return False
455 if address in self.imported_keys.keys(): return False
456 acct, s = self.get_address_index(address)
457 if s is None: return False
460 def get_master_public_key(self):
461 if self.seed_version == 4:
462 return self.storage.get("master_public_key")
464 c, K, cK = self.storage.get("master_public_keys")["m/0'/"]
467 def get_master_private_key(self, account, password):
468 master_k = pw_decode( self.master_private_keys[account], password)
469 master_c, master_K, master_Kc = self.master_public_keys[account]
471 K, Kc = get_pubkeys_from_secret(master_k.decode('hex'))
472 assert K.encode('hex') == master_K
474 raise BaseException("Invalid password")
478 def get_address_index(self, address):
479 if address in self.imported_keys.keys():
482 for account in self.accounts.keys():
483 for for_change in [0,1]:
484 addresses = self.accounts[account].get_addresses(for_change)
485 for addr in addresses:
487 return account, (for_change, addresses.index(addr))
489 raise BaseException("Address not found", address)
492 def rebase_sequence(self, account, sequence):
495 for a in account.split('&'):
497 m = re.match("(m/\d+'/)(\d+)", s)
499 num = int(m.group(2))
500 dd.append( (root, [num,c,i] ) )
504 def get_keyID(self, account, sequence):
508 rs = self.rebase_sequence(account, sequence)
510 for root, public_sequence in rs:
511 c, K, _ = self.master_public_keys[root]
512 s = '/' + '/'.join( map(lambda x:str(x), public_sequence) )
513 dd.append( 'bip32(%s,%s,%s)'%(c,K, s) )
517 def get_public_key(self, address):
518 account, sequence = self.get_address_index(address)
519 return self.accounts[account].get_pubkey( *sequence )
522 def decode_seed(self, password):
523 seed = pw_decode(self.seed, password)
524 #todo: #self.sequences[0].check_seed(seed)
528 def get_private_key(self, address, password):
530 if address in self.imported_keys.keys():
531 out.append( pw_decode( self.imported_keys[address], password ) )
533 account, sequence = self.get_address_index(address)
535 seed = self.decode_seed(password)
536 pk = self.accounts[account].get_private_key(seed, sequence)
540 # assert address == self.accounts[account].get_address(*sequence)
541 rs = self.rebase_sequence( account, sequence)
542 for root, public_sequence in rs:
544 if root not in self.master_private_keys.keys(): continue
545 master_k = self.get_master_private_key(root, password)
546 master_c, _, _ = self.master_public_keys[root]
547 pk = bip32_private_key( public_sequence, master_k.decode('hex'), master_c.decode('hex'))
555 def signrawtransaction(self, tx, input_info, private_keys, password):
557 unspent_coins = self.get_unspent_coins()
558 seed = self.decode_seed(password)
560 # build a list of public/private keys
562 for sec in private_keys:
563 pubkey = public_key_from_private_key(sec)
564 keypairs[ pubkey ] = sec
567 for txin in tx.inputs:
568 # convert to own format
569 txin['tx_hash'] = txin['prevout_hash']
570 txin['index'] = txin['prevout_n']
572 for item in input_info:
573 if item.get('txid') == txin['tx_hash'] and item.get('vout') == txin['index']:
574 txin['raw_output_script'] = item['scriptPubKey']
575 txin['redeemScript'] = item.get('redeemScript')
576 txin['KeyID'] = item.get('KeyID')
579 for item in unspent_coins:
580 if txin['tx_hash'] == item['tx_hash'] and txin['index'] == item['index']:
581 print_error( "tx input is in unspent coins" )
582 txin['raw_output_script'] = item['raw_output_script']
583 account, sequence = self.get_address_index(item['address'])
585 txin['redeemScript'] = self.accounts[account].redeem_script(sequence)
588 raise BaseException("Unknown transaction input. Please provide the 'input_info' parameter, or synchronize this wallet")
590 # if available, derive private_keys from KeyID
591 keyid = txin.get('KeyID')
594 for s in keyid.split('&'):
595 m = re.match("bip32\(([0-9a-f]+),([0-9a-f]+),(/\d+/\d+/\d+)", s)
599 sequence = m.group(3)
600 root = self.find_root_by_master_key(c,K)
601 if not root: continue
602 sequence = map(lambda x:int(x), sequence.strip('/').split('/'))
603 root = root + '%d'%sequence[0]
604 sequence = sequence[1:]
605 roots.append((root,sequence))
607 account_id = " & ".join( map(lambda x:x[0], roots) )
608 account = self.accounts.get(account_id)
609 if not account: continue
610 addr = account.get_address(*sequence)
611 txin['address'] = addr
612 pk = self.get_private_key(addr, password)
614 pubkey = public_key_from_private_key(sec)
615 keypairs[pubkey] = sec
617 redeem_script = txin.get("redeemScript")
618 print_error( "p2sh:", "yes" if redeem_script else "no")
620 addr = hash_160_to_bc_address(hash_160(redeem_script.decode('hex')), 5)
622 addr = transaction.get_address_from_output_script(txin["raw_output_script"].decode('hex'))
623 txin['address'] = addr
625 # add private keys that are in the wallet
626 pk = self.get_private_key(addr, password)
628 pubkey = public_key_from_private_key(sec)
629 keypairs[pubkey] = sec
630 if not redeem_script:
631 txin['redeemPubkey'] = pubkey
637 def sign_message(self, address, message, password):
638 keys = self.get_private_key(address, password)
639 assert len(keys) == 1
641 key = regenerate_key(sec)
642 compressed = is_compressed(sec)
643 return key.sign_message(message, compressed, address)
645 def verify_message(self, address, signature, message):
647 EC_KEY.verify_message(address, signature, message)
649 except BaseException as e:
650 print_error("Verification error: {0}".format(e))
654 def change_gap_limit(self, value):
655 if value >= self.gap_limit:
656 self.gap_limit = value
657 self.storage.put('gap_limit', self.gap_limit, True)
658 #self.interface.poke('synchronizer')
661 elif value >= self.min_acceptable_gap():
662 for key, account in self.accounts.items():
663 addresses = account[0]
664 k = self.num_unused_trailing_addresses(addresses)
665 n = len(addresses) - k + value
666 addresses = addresses[0:n]
667 self.accounts[key][0] = addresses
669 self.gap_limit = value
670 self.storage.put('gap_limit', self.gap_limit, True)
676 def num_unused_trailing_addresses(self, addresses):
678 for a in addresses[::-1]:
679 if self.history.get(a):break
683 def min_acceptable_gap(self):
684 # fixme: this assumes wallet is synchronized
688 for account in self.accounts.values():
689 addresses = account.get_addresses(0)
690 k = self.num_unused_trailing_addresses(addresses)
691 for a in addresses[0:-k]:
692 if self.history.get(a):
696 if n > nmax: nmax = n
700 def address_is_old(self, address):
702 h = self.history.get(address, [])
705 for tx_hash, tx_height in h:
709 tx_age = self.verifier.blockchain.height - tx_height + 1
715 def synchronize_sequence(self, account, for_change):
716 limit = self.gap_limit_for_change if for_change else self.gap_limit
719 addresses = account.get_addresses(for_change)
720 if len(addresses) < limit:
721 address = account.create_new_address(for_change)
722 self.history[address] = []
723 new_addresses.append( address )
726 if map( lambda a: self.address_is_old(a), addresses[-limit:] ) == limit*[False]:
729 address = account.create_new_address(for_change)
730 self.history[address] = []
731 new_addresses.append( address )
737 def create_pending_accounts(self):
738 for account_type in ['1','2of2','2of3']:
739 a = self.new_account_address(account_type)
740 if self.address_is_old(a):
741 print_error( "creating account", a )
742 self.create_account(account_type)
745 def synchronize_account(self, account):
747 new += self.synchronize_sequence(account, 0)
748 new += self.synchronize_sequence(account, 1)
752 def synchronize(self):
753 if self.master_public_keys:
754 self.create_pending_accounts()
756 for account in self.accounts.values():
757 new += self.synchronize_account(account)
760 self.storage.put('addr_history', self.history, True)
765 return self.history.values() != [[]] * len(self.history)
768 def add_contact(self, address, label=None):
769 self.addressbook.append(address)
770 self.storage.put('contacts', self.addressbook, True)
772 self.set_label(address, label)
775 def delete_contact(self, addr):
776 if addr in self.addressbook:
777 self.addressbook.remove(addr)
778 self.storage.put('addressbook', self.addressbook, True)
781 def fill_addressbook(self):
782 for tx_hash, tx in self.transactions.items():
783 is_relevant, is_send, _, _ = self.get_tx_value(tx)
785 for addr, v in tx.outputs:
786 if not self.is_mine(addr) and addr not in self.addressbook:
787 self.addressbook.append(addr)
789 # self.update_tx_labels()
791 def get_num_tx(self, address):
793 for tx in self.transactions.values():
794 if address in map(lambda x:x[0], tx.outputs): n += 1
798 def get_address_flags(self, addr):
799 flags = "C" if self.is_change(addr) else "I" if addr in self.imported_keys.keys() else "-"
800 flags += "F" if addr in self.frozen_addresses else "P" if addr in self.prioritized_addresses else "-"
804 def get_tx_value(self, tx, account=None):
805 domain = self.get_account_addresses(account)
806 return tx.get_value(domain, self.prevout_values)
809 def update_tx_outputs(self, tx_hash):
810 tx = self.transactions.get(tx_hash)
812 for i, (addr, value) in enumerate(tx.outputs):
813 key = tx_hash+ ':%d'%i
814 self.prevout_values[key] = value
816 for item in tx.inputs:
817 if self.is_mine(item.get('address')):
818 key = item['prevout_hash'] + ':%d'%item['prevout_n']
819 self.spent_outputs.append(key)
822 def get_addr_balance(self, address):
823 assert self.is_mine(address)
824 h = self.history.get(address,[])
825 if h == ['*']: return 0,0
827 received_coins = [] # list of coins received at address
829 for tx_hash, tx_height in h:
830 tx = self.transactions.get(tx_hash)
833 for i, (addr, value) in enumerate(tx.outputs):
835 key = tx_hash + ':%d'%i
836 received_coins.append(key)
838 for tx_hash, tx_height in h:
839 tx = self.transactions.get(tx_hash)
843 for item in tx.inputs:
844 addr = item.get('address')
846 key = item['prevout_hash'] + ':%d'%item['prevout_n']
847 value = self.prevout_values.get( key )
848 if key in received_coins:
851 for i, (addr, value) in enumerate(tx.outputs):
852 key = tx_hash + ':%d'%i
863 def get_account_name(self, k):
865 if self.seed_version == 4:
866 name = 'Main account'
870 name = self.labels.get(k, 'Unnamed account')
873 def get_account_names(self):
875 for k, account in self.accounts.items():
876 accounts[k] = self.get_account_name(k)
877 if self.imported_keys:
878 accounts[-1] = 'Imported keys'
881 def get_account_addresses(self, a, include_change=True):
883 o = self.addresses(True)
885 o = self.imported_keys.keys()
887 ac = self.accounts[a]
888 o = ac.get_addresses(0)
889 if include_change: o += ac.get_addresses(1)
892 def get_imported_balance(self):
894 for addr in self.imported_keys.keys():
895 c, u = self.get_addr_balance(addr)
900 def get_account_balance(self, account):
902 return self.get_balance()
904 return self.get_imported_balance()
907 for addr in self.get_account_addresses(account):
908 c, u = self.get_addr_balance(addr)
913 def get_frozen_balance(self):
915 for addr in self.frozen_addresses:
916 c, u = self.get_addr_balance(addr)
922 def get_balance(self):
924 for a in self.accounts.keys():
925 c, u = self.get_account_balance(a)
928 c, u = self.get_imported_balance()
934 def get_unspent_coins(self, domain=None):
936 if domain is None: domain = self.addresses(True)
938 h = self.history.get(addr, [])
939 if h == ['*']: continue
940 for tx_hash, tx_height in h:
941 tx = self.transactions.get(tx_hash)
942 if tx is None: raise BaseException("Wallet not synchronized")
943 for output in tx.d.get('outputs'):
944 if output.get('address') != addr: continue
945 key = tx_hash + ":%d" % output.get('index')
946 if key in self.spent_outputs: continue
947 output['tx_hash'] = tx_hash
953 def choose_tx_inputs( self, amount, fixed_fee, account = None ):
954 """ todo: minimize tx size """
956 fee = self.fee if fixed_fee is None else fixed_fee
957 domain = self.get_account_addresses(account)
959 prioritized_coins = []
960 for i in self.frozen_addresses:
961 if i in domain: domain.remove(i)
963 for i in self.prioritized_addresses:
964 if i in domain: domain.remove(i)
966 coins = self.get_unspent_coins(domain)
967 prioritized_coins = self.get_unspent_coins(self.prioritized_addresses)
970 coins = prioritized_coins + coins
973 addr = item.get('address')
974 v = item.get('value')
976 inputs.append( item )
977 fee = self.estimated_fee(inputs) if fixed_fee is None else fixed_fee
978 if total >= amount + fee: break
982 return inputs, total, fee
985 def set_fee(self, fee):
988 self.storage.put('fee_per_kb', self.fee, True)
990 def estimated_fee(self, inputs):
991 estimated_size = len(inputs) * 180 + 80 # this assumes non-compressed keys
992 fee = self.fee * int(round(estimated_size/1024.))
993 if fee == 0: fee = self.fee
997 def add_tx_change( self, inputs, outputs, amount, fee, total, change_addr=None, account=0 ):
998 "add change to a transaction"
999 change_amount = total - ( amount + fee )
1000 if change_amount != 0:
1003 # send change to one of the accounts involved in the tx
1004 address = inputs[0].get('address')
1005 account, _ = self.get_address_index(address)
1007 if not self.use_change or account == -1:
1008 change_addr = inputs[-1]['address']
1010 change_addr = self.accounts[account].get_addresses(1)[-self.gap_limit_for_change]
1012 # Insert the change output at a random position in the outputs
1013 posn = random.randint(0, len(outputs))
1014 outputs[posn:posn] = [( change_addr, change_amount)]
1018 def get_history(self, address):
1020 return self.history.get(address)
1023 def get_status(self, h):
1024 if not h: return None
1025 if h == ['*']: return '*'
1027 for tx_hash, height in h:
1028 status += tx_hash + ':%d:' % height
1029 return hashlib.sha256( status ).digest().encode('hex')
1032 def receive_tx_callback(self, tx_hash, tx, tx_height):
1034 with self.transaction_lock:
1035 self.add_extra_addresses(tx)
1036 if not self.check_new_tx(tx_hash, tx):
1037 # may happen due to pruning
1038 print_error("received transaction that is no longer referenced in history", tx_hash)
1040 self.transactions[tx_hash] = tx
1041 self.network.interface.pending_transactions_for_notifications.append(tx)
1042 self.save_transactions()
1043 if self.verifier and tx_height>0:
1044 self.verifier.add(tx_hash, tx_height)
1045 self.update_tx_outputs(tx_hash)
1048 def save_transactions(self):
1050 for k,v in self.transactions.items():
1052 self.storage.put('transactions', tx, True)
1054 def receive_history_callback(self, addr, hist):
1056 if not self.check_new_history(addr, hist):
1057 raise BaseException("error: received history for %s is not consistent with known transactions"%addr)
1060 self.history[addr] = hist
1061 self.storage.put('addr_history', self.history, True)
1064 for tx_hash, tx_height in hist:
1066 # add it in case it was previously unconfirmed
1067 if self.verifier: self.verifier.add(tx_hash, tx_height)
1070 def get_tx_history(self, account=None):
1071 with self.transaction_lock:
1072 history = self.transactions.items()
1073 history.sort(key = lambda x: self.verifier.get_txpos(x[0]))
1077 for tx_hash, tx in history:
1078 is_relevant, is_mine, v, fee = self.get_tx_value(tx, account)
1079 if v is not None: balance += v
1081 c, u = self.get_account_balance(account)
1084 result.append( ('', 1000, 0, c+u-balance, None, c+u-balance, None ) )
1086 balance = c + u - balance
1087 for tx_hash, tx in history:
1088 is_relevant, is_mine, value, fee = self.get_tx_value(tx, account)
1091 if value is not None:
1094 conf, timestamp = self.verifier.get_confirmations(tx_hash) if self.verifier else (None, None)
1095 result.append( (tx_hash, conf, is_mine, value, fee, balance, timestamp) )
1100 def get_label(self, tx_hash):
1101 label = self.labels.get(tx_hash)
1102 is_default = (label == '') or (label is None)
1103 if is_default: label = self.get_default_label(tx_hash)
1104 return label, is_default
1107 def get_default_label(self, tx_hash):
1108 tx = self.transactions.get(tx_hash)
1111 is_relevant, is_mine, _, _ = self.get_tx_value(tx)
1113 for o in tx.outputs:
1115 if not self.is_mine(o_addr):
1117 default_label = self.labels[o_addr]
1119 default_label = o_addr
1122 default_label = '(internal)'
1124 for o in tx.outputs:
1126 if self.is_mine(o_addr) and not self.is_change(o_addr):
1129 for o in tx.outputs:
1131 if self.is_mine(o_addr):
1137 dest_label = self.labels.get(o_addr)
1139 default_label = self.labels[o_addr]
1141 default_label = o_addr
1143 return default_label
1146 def make_unsigned_transaction(self, outputs, fee=None, change_addr=None, account=None ):
1147 for address, x in outputs:
1148 assert is_valid(address)
1149 amount = sum( map(lambda x:x[1], outputs) )
1150 inputs, total, fee = self.choose_tx_inputs( amount, fee, account )
1152 raise ValueError("Not enough funds")
1153 outputs = self.add_tx_change(inputs, outputs, amount, fee, total, change_addr, account)
1154 return Transaction.from_io(inputs, outputs)
1157 def mktx(self, outputs, password, fee=None, change_addr=None, account=None ):
1158 tx = self.make_unsigned_transaction(outputs, fee, change_addr, account)
1159 self.sign_transaction(tx, password)
1163 def sign_transaction(self, tx, password):
1165 for i, txin in enumerate(tx.inputs):
1166 address = txin['address']
1167 account, sequence = self.get_address_index(address)
1168 txin['KeyID'] = self.get_keyID(account, sequence)
1169 redeemScript = self.accounts[account].redeem_script(sequence)
1171 txin['redeemScript'] = redeemScript
1173 txin['redeemPubkey'] = self.accounts[account].get_pubkey(*sequence)
1174 private_keys = self.get_private_key(address, password)
1175 for sec in private_keys:
1176 pubkey = public_key_from_private_key(sec)
1177 keypairs[ pubkey ] = sec
1181 def sendtx(self, tx):
1183 h = self.send_tx(tx)
1184 self.tx_event.wait()
1185 return self.receive_tx(h)
1187 def send_tx(self, tx):
1189 self.tx_event.clear()
1190 self.network.interface.send([('blockchain.transaction.broadcast', [str(tx)])], self.on_broadcast)
1193 def on_broadcast(self, i, r):
1194 self.tx_result = r.get('result')
1197 def receive_tx(self,tx_hash):
1198 out = self.tx_result
1200 return False, "error: " + out
1205 def update_password(self, seed, old_password, new_password):
1206 if new_password == '': new_password = None
1207 # this will throw an exception if unicode cannot be converted
1208 self.seed = pw_encode( seed, new_password)
1209 self.storage.put('seed', self.seed, True)
1210 self.use_encryption = (new_password != None)
1211 self.storage.put('use_encryption', self.use_encryption,True)
1212 for k in self.imported_keys.keys():
1213 a = self.imported_keys[k]
1214 b = pw_decode(a, old_password)
1215 c = pw_encode(b, new_password)
1216 self.imported_keys[k] = c
1217 self.storage.put('imported_keys', self.imported_keys, True)
1219 for k, v in self.master_private_keys.items():
1220 b = pw_decode(v, old_password)
1221 c = pw_encode(b, new_password)
1222 self.master_private_keys[k] = c
1223 self.storage.put('master_private_keys', self.master_private_keys, True)
1226 def freeze(self,addr):
1227 if self.is_mine(addr) and addr not in self.frozen_addresses:
1228 self.unprioritize(addr)
1229 self.frozen_addresses.append(addr)
1230 self.storage.put('frozen_addresses', self.frozen_addresses, True)
1235 def unfreeze(self,addr):
1236 if self.is_mine(addr) and addr in self.frozen_addresses:
1237 self.frozen_addresses.remove(addr)
1238 self.storage.put('frozen_addresses', self.frozen_addresses, True)
1243 def prioritize(self,addr):
1244 if self.is_mine(addr) and addr not in self.prioritized_addresses:
1246 self.prioritized_addresses.append(addr)
1247 self.storage.put('prioritized_addresses', self.prioritized_addresses, True)
1252 def unprioritize(self,addr):
1253 if self.is_mine(addr) and addr in self.prioritized_addresses:
1254 self.prioritized_addresses.remove(addr)
1255 self.storage.put('prioritized_addresses', self.prioritized_addresses, True)
1261 def set_verifier(self, verifier):
1262 self.verifier = verifier
1264 # review transactions that are in the history
1265 for addr, hist in self.history.items():
1266 if hist == ['*']: continue
1267 for tx_hash, tx_height in hist:
1269 # add it in case it was previously unconfirmed
1270 self.verifier.add(tx_hash, tx_height)
1273 # if we are on a pruning server, remove unverified transactions
1274 vr = self.verifier.transactions.keys() + self.verifier.verified_tx.keys()
1275 for tx_hash in self.transactions.keys():
1276 if tx_hash not in vr:
1277 self.transactions.pop(tx_hash)
1281 def check_new_history(self, addr, hist):
1283 # check that all tx in hist are relevant
1285 for tx_hash, height in hist:
1286 tx = self.transactions.get(tx_hash)
1288 if not tx.has_address(addr):
1291 # check that we are not "orphaning" a transaction
1292 old_hist = self.history.get(addr,[])
1293 if old_hist == ['*']: return True
1295 for tx_hash, height in old_hist:
1296 if tx_hash in map(lambda x:x[0], hist): continue
1298 for _addr, _hist in self.history.items():
1299 if _addr == addr: continue
1300 if _hist == ['*']: continue
1301 _tx_hist = map(lambda x:x[0], _hist)
1302 if tx_hash in _tx_hist:
1307 tx = self.transactions.get(tx_hash)
1308 # tx might not be there
1312 if self.verifier.get_height(tx_hash):
1315 print_error("new history is orphaning transaction:", tx_hash)
1316 # check that all outputs are not mine, request histories
1318 for _addr, _v in tx.outputs:
1319 # assert not self.is_mine(_addr)
1320 ext_requests.append( ('blockchain.address.get_history', [_addr]) )
1322 ext_h = self.network.interface.synchronous_get(ext_requests)
1323 print_error("sync:", ext_requests, ext_h)
1326 if h == ['*']: continue
1328 if item.get('tx_hash') == tx_hash:
1329 height = item.get('height')
1331 print_error("found height for", tx_hash, height)
1332 self.verifier.add(tx_hash, height)
1334 print_error("removing orphaned tx from history", tx_hash)
1335 self.transactions.pop(tx_hash)
1341 def check_new_tx(self, tx_hash, tx):
1342 # 1 check that tx is referenced in addr_history.
1344 for addr, hist in self.history.items():
1345 if hist == ['*']:continue
1346 for txh, height in hist:
1348 addresses.append(addr)
1353 # 2 check that referencing addresses are in the tx
1354 for addr in addresses:
1355 if not tx.has_address(addr):
1361 def start_threads(self, network):
1362 from verifier import TxVerifier
1363 self.network = network
1364 self.verifier = TxVerifier(self.network, self.storage)
1365 self.verifier.start()
1366 self.set_verifier(self.verifier)
1367 self.synchronizer = WalletSynchronizer(self)
1368 self.synchronizer.start()
1370 def stop_threads(self):
1371 self.verifier.stop()
1372 self.synchronizer.stop()
1378 class WalletSynchronizer(threading.Thread):
1381 def __init__(self, wallet):
1382 threading.Thread.__init__(self)
1384 self.wallet = wallet
1385 wallet.synchronizer = self
1386 self.network = self.wallet.network
1387 #self.wallet.network.register_callback('connected', lambda: self.wallet.set_up_to_date(False))
1388 self.was_updated = True
1389 self.running = False
1390 self.lock = threading.Lock()
1391 self.queue = Queue.Queue()
1394 with self.lock: self.running = False
1396 def is_running(self):
1397 with self.lock: return self.running
1400 def subscribe_to_addresses(self, addresses):
1402 for addr in addresses:
1403 messages.append(('blockchain.address.subscribe', [addr]))
1404 self.network.interface.send( messages, lambda i,r: self.queue.put(r))
1411 while self.is_running():
1412 interface = self.network.interface
1413 if not interface.is_connected:
1414 print_error("synchronizer: waiting for interface")
1415 interface.connect_event.wait()
1417 self.run_interface(interface)
1420 def run_interface(self, interface):
1422 print_error("synchronizer: connected to", interface.server)
1426 requested_histories = {}
1428 # request any missing transactions
1429 for history in self.wallet.history.values():
1430 if history == ['*']: continue
1431 for tx_hash, tx_height in history:
1432 if self.wallet.transactions.get(tx_hash) is None and (tx_hash, tx_height) not in missing_tx:
1433 missing_tx.append( (tx_hash, tx_height) )
1436 print_error("missing tx", missing_tx)
1439 self.subscribe_to_addresses(self.wallet.addresses(True, next=True))
1441 while self.is_running():
1442 # 1. create new addresses
1443 new_addresses = self.wallet.synchronize()
1445 # request missing addresses
1447 self.subscribe_to_addresses(new_addresses)
1449 # request missing transactions
1450 for tx_hash, tx_height in missing_tx:
1451 if (tx_hash, tx_height) not in requested_tx:
1452 interface.send([ ('blockchain.transaction.get',[tx_hash, tx_height]) ], lambda i,r: self.queue.put(r))
1453 requested_tx.append( (tx_hash, tx_height) )
1456 # detect if situation has changed
1457 if interface.is_up_to_date() and self.queue.empty():
1458 if not self.wallet.is_up_to_date():
1459 self.wallet.set_up_to_date(True)
1460 self.was_updated = True
1462 if self.wallet.is_up_to_date():
1463 self.wallet.set_up_to_date(False)
1464 self.was_updated = True
1466 if self.was_updated:
1467 self.wallet.network.trigger_callback('updated')
1468 self.was_updated = False
1472 r = self.queue.get(block=True, timeout=1)
1476 if interface != self.network.interface:
1482 # 3. handle response
1483 method = r['method']
1484 params = r['params']
1485 result = r.get('result')
1486 error = r.get('error')
1491 if method == 'blockchain.address.subscribe':
1493 if self.wallet.get_status(self.wallet.get_history(addr)) != result:
1494 if requested_histories.get(addr) is None:
1495 interface.send([('blockchain.address.get_history', [addr])], lambda i,r:self.queue.put(r))
1496 requested_histories[addr] = result
1498 elif method == 'blockchain.address.get_history':
1500 print_error("receiving history", addr, result)
1502 assert requested_histories.pop(addr) == '*'
1503 self.wallet.receive_history_callback(addr, result)
1506 # check that txids are unique
1509 tx_hash = item['tx_hash']
1510 if tx_hash not in txids:
1511 txids.append(tx_hash)
1512 hist.append( (tx_hash, item['height']) )
1514 if len(hist) != len(result):
1515 raise BaseException("error: server sent history with non-unique txid", result)
1517 # check that the status corresponds to what was announced
1518 rs = requested_histories.pop(addr)
1519 if self.wallet.get_status(hist) != rs:
1520 raise BaseException("error: status mismatch: %s"%addr)
1522 # store received history
1523 self.wallet.receive_history_callback(addr, hist)
1525 # request transactions that we don't have
1526 for tx_hash, tx_height in hist:
1527 if self.wallet.transactions.get(tx_hash) is None:
1528 if (tx_hash, tx_height) not in requested_tx and (tx_hash, tx_height) not in missing_tx:
1529 missing_tx.append( (tx_hash, tx_height) )
1531 elif method == 'blockchain.transaction.get':
1533 tx_height = params[1]
1534 assert tx_hash == hash_encode(Hash(result.decode('hex')))
1535 tx = Transaction(result)
1536 self.wallet.receive_tx_callback(tx_hash, tx, tx_height)
1537 self.was_updated = True
1538 requested_tx.remove( (tx_hash, tx_height) )
1539 print_error("received tx:", tx_hash, len(tx.raw))
1542 print_error("Error: Unknown message:" + method + ", " + repr(params) + ", " + repr(result) )
1544 if self.was_updated and not requested_tx:
1545 self.wallet.network.trigger_callback('updated')
1546 self.wallet.network.trigger_callback("new_transaction") # Updated gets called too many times from other places as well; if we use that signal we get the notification three times
1548 self.was_updated = False