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1378 lines
51 KiB
1378 lines
51 KiB
#!/usr/bin/env python
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#
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# Electrum - lightweight Bitcoin client
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# Copyright (C) 2011 thomasv@gitorious
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import sys
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import base64
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import os
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import re
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import hashlib
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import copy
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import operator
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import ast
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import threading
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import random
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import aes
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import ecdsa
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import Queue
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import time
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from ecdsa.util import string_to_number, number_to_string
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from util import print_error, user_dir, format_satoshis
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from bitcoin import *
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# URL decode
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_ud = re.compile('%([0-9a-hA-H]{2})', re.MULTILINE)
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urldecode = lambda x: _ud.sub(lambda m: chr(int(m.group(1), 16)), x)
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# AES encryption
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EncodeAES = lambda secret, s: base64.b64encode(aes.encryptData(secret,s))
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DecodeAES = lambda secret, e: aes.decryptData(secret, base64.b64decode(e))
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from version import ELECTRUM_VERSION, SEED_VERSION
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class Wallet:
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def __init__(self, config={}):
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self.config = config
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self.electrum_version = ELECTRUM_VERSION
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self.gap_limit_for_change = 3 # constant
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# saved fields
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self.seed_version = config.get('seed_version', SEED_VERSION)
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self.gap_limit = config.get('gap_limit', 5)
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self.use_change = config.get('use_change',True)
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self.fee = int(config.get('fee',100000))
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self.num_zeros = int(config.get('num_zeros',0))
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self.master_public_key = config.get('master_public_key','')
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self.use_encryption = config.get('use_encryption', False)
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self.addresses = config.get('addresses', []) # receiving addresses visible for user
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self.change_addresses = config.get('change_addresses', []) # addresses used as change
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self.seed = config.get('seed', '') # encrypted
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self.labels = config.get('labels', {})
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self.aliases = config.get('aliases', {}) # aliases for addresses
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self.authorities = config.get('authorities', {}) # trusted addresses
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self.frozen_addresses = config.get('frozen_addresses',[])
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self.prioritized_addresses = config.get('prioritized_addresses',[])
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self.receipts = config.get('receipts',{}) # signed URIs
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self.addressbook = config.get('contacts', [])
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self.imported_keys = config.get('imported_keys',{})
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self.history = config.get('addr_history',{}) # address -> list(txid, height)
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self.transactions = config.get('transactions',{}) # txid -> deserialised
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self.requested_amounts = config.get('requested_amounts',{}) # txid -> deserialised
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# not saved
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self.prevout_values = {} # my own transaction outputs
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self.spent_outputs = []
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self.receipt = None # next receipt
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self.banner = ''
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# spv
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self.verifier = None
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# there is a difference between wallet.up_to_date and interface.is_up_to_date()
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# interface.is_up_to_date() returns true when all requests have been answered and processed
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# wallet.up_to_date is true when the wallet is synchronized (stronger requirement)
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self.up_to_date = False
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self.lock = threading.Lock()
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self.tx_event = threading.Event()
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if self.seed_version != SEED_VERSION:
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raise ValueError("This wallet seed is deprecated. Please run upgrade.py for a diagnostic.")
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for tx_hash in self.transactions.keys():
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self.update_tx_outputs(tx_hash)
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def set_up_to_date(self,b):
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with self.lock: self.up_to_date = b
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def is_up_to_date(self):
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with self.lock: return self.up_to_date
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def update(self):
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self.up_to_date = False
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self.interface.poke('synchronizer')
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while not self.is_up_to_date(): time.sleep(0.1)
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def import_key(self, sec, password):
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# try password
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try:
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seed = self.decode_seed(password)
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except:
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raise BaseException("Invalid password")
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# rebuild public key from private key, compressed or uncompressed
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pkey = regenerate_key(sec)
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if not pkey:
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return False
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# figure out if private key is compressed
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compressed = is_compressed(sec)
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# rebuild private and public key from regenerated secret
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private_key = GetPrivKey(pkey, compressed)
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public_key = GetPubKey(pkey.pubkey, compressed)
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address = public_key_to_bc_address(public_key)
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if address in self.all_addresses():
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raise BaseException('Address already in wallet')
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# store the originally requested keypair into the imported keys table
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self.imported_keys[address] = self.pw_encode(sec, password )
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return address
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def init_seed(self, seed):
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if self.seed: raise BaseException("a seed exists")
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if not seed:
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seed = "%032x"%ecdsa.util.randrange( pow(2,128) )
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self.seed = seed
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self.config.set_key('seed', self.seed, True)
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self.config.set_key('seed_version', self.seed_version, True)
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self.init_mpk(self.seed)
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def init_mpk(self,seed):
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# public key
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curve = SECP256k1
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secexp = self.stretch_key(seed)
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master_private_key = ecdsa.SigningKey.from_secret_exponent( secexp, curve = SECP256k1 )
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self.master_public_key = master_private_key.get_verifying_key().to_string().encode('hex')
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self.config.set_key('master_public_key', self.master_public_key, True)
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def all_addresses(self):
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return self.addresses + self.change_addresses + self.imported_keys.keys()
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def is_mine(self, address):
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return address in self.all_addresses()
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def is_change(self, address):
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return address in self.change_addresses
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def is_valid(self,addr):
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ADDRESS_RE = re.compile('[1-9A-HJ-NP-Za-km-z]{26,}\\Z')
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if not ADDRESS_RE.match(addr): return False
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try:
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addrtype, h = bc_address_to_hash_160(addr)
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except:
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return False
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return addr == hash_160_to_bc_address(h, addrtype)
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def stretch_key(self,seed):
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oldseed = seed
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for i in range(100000):
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seed = hashlib.sha256(seed + oldseed).digest()
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return string_to_number( seed )
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def get_sequence(self,n,for_change):
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return string_to_number( Hash( "%d:%d:"%(n,for_change) + self.master_public_key.decode('hex') ) )
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def get_private_key_base58(self, address, password):
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secexp, compressed = self.get_private_key(address, password)
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if secexp is None: return None
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pk = number_to_string( secexp, generator_secp256k1.order() )
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return SecretToASecret( pk, compressed )
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def get_private_key(self, address, password):
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""" Privatekey(type,n) = Master_private_key + H(n|S|type) """
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order = generator_secp256k1.order()
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if address in self.imported_keys.keys():
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sec = self.pw_decode( self.imported_keys[address], password )
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if not sec: return None, None
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pkey = regenerate_key(sec)
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compressed = is_compressed(sec)
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secexp = pkey.secret
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else:
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if address in self.addresses:
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n = self.addresses.index(address)
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for_change = False
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elif address in self.change_addresses:
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n = self.change_addresses.index(address)
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for_change = True
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else:
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raise BaseException("unknown address")
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seed = self.pw_decode( self.seed, password)
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if not seed: return None
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secexp = self.stretch_key(seed)
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secexp = ( secexp + self.get_sequence(n,for_change) ) % order
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compressed = False
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pkey = EC_KEY(secexp)
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public_key = GetPubKey(pkey.pubkey, compressed)
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addr = public_key_to_bc_address(public_key)
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if addr != address:
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print_error('Invalid password with correct decoding')
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raise BaseException('Invalid password')
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return secexp, compressed
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def msg_magic(self, message):
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return "\x18Bitcoin Signed Message:\n" + chr( len(message) ) + message
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def sign_message(self, address, message, password):
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secexp, compressed = self.get_private_key(address, password)
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private_key = ecdsa.SigningKey.from_secret_exponent( secexp, curve = SECP256k1 )
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public_key = private_key.get_verifying_key()
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signature = private_key.sign_digest( Hash( self.msg_magic( message ) ), sigencode = ecdsa.util.sigencode_string )
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assert public_key.verify_digest( signature, Hash( self.msg_magic( message ) ), sigdecode = ecdsa.util.sigdecode_string)
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for i in range(4):
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sig = base64.b64encode( chr(27 + i + (4 if compressed else 0)) + signature )
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try:
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self.verify_message( address, sig, message)
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return sig
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except:
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continue
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else:
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raise BaseException("error: cannot sign message")
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def verify_message(self, address, signature, message):
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""" See http://www.secg.org/download/aid-780/sec1-v2.pdf for the math """
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from ecdsa import numbertheory, ellipticcurve, util
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import msqr
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curve = curve_secp256k1
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G = generator_secp256k1
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order = G.order()
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# extract r,s from signature
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sig = base64.b64decode(signature)
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if len(sig) != 65: raise BaseException("Wrong encoding")
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r,s = util.sigdecode_string(sig[1:], order)
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nV = ord(sig[0])
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if nV < 27 or nV >= 35:
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raise BaseException("Bad encoding")
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if nV >= 31:
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compressed = True
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nV -= 4
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else:
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compressed = False
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recid = nV - 27
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# 1.1
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x = r + (recid/2) * order
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# 1.3
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alpha = ( x * x * x + curve.a() * x + curve.b() ) % curve.p()
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beta = msqr.modular_sqrt(alpha, curve.p())
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y = beta if (beta - recid) % 2 == 0 else curve.p() - beta
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# 1.4 the constructor checks that nR is at infinity
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R = ellipticcurve.Point(curve, x, y, order)
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# 1.5 compute e from message:
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h = Hash( self.msg_magic( message ) )
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e = string_to_number(h)
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minus_e = -e % order
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# 1.6 compute Q = r^-1 (sR - eG)
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inv_r = numbertheory.inverse_mod(r,order)
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Q = inv_r * ( s * R + minus_e * G )
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public_key = ecdsa.VerifyingKey.from_public_point( Q, curve = SECP256k1 )
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# check that Q is the public key
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public_key.verify_digest( sig[1:], h, sigdecode = ecdsa.util.sigdecode_string)
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# check that we get the original signing address
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addr = public_key_to_bc_address( encode_point(public_key, compressed) )
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if address != addr:
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raise BaseException("Bad signature")
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def create_new_address(self, for_change):
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n = len(self.change_addresses) if for_change else len(self.addresses)
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address = self.get_new_address(n, for_change)
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if for_change:
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self.change_addresses.append(address)
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else:
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self.addresses.append(address)
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self.history[address] = []
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return address
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def get_new_address(self, n, for_change):
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""" Publickey(type,n) = Master_public_key + H(n|S|type)*point """
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curve = SECP256k1
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z = self.get_sequence(n, for_change)
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master_public_key = ecdsa.VerifyingKey.from_string( self.master_public_key.decode('hex'), curve = SECP256k1 )
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pubkey_point = master_public_key.pubkey.point + z*curve.generator
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public_key2 = ecdsa.VerifyingKey.from_public_point( pubkey_point, curve = SECP256k1 )
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address = public_key_to_bc_address( '04'.decode('hex') + public_key2.to_string() )
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print address
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return address
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def change_gap_limit(self, value):
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if value >= self.gap_limit:
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self.gap_limit = value
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self.save()
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self.interface.poke('synchronizer')
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return True
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elif value >= self.min_acceptable_gap():
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k = self.num_unused_trailing_addresses()
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n = len(self.addresses) - k + value
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self.addresses = self.addresses[0:n]
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self.gap_limit = value
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self.save()
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return True
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else:
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return False
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def num_unused_trailing_addresses(self):
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k = 0
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for a in self.addresses[::-1]:
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if self.history.get(a):break
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k = k + 1
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return k
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def min_acceptable_gap(self):
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# fixme: this assumes wallet is synchronized
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n = 0
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nmax = 0
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k = self.num_unused_trailing_addresses()
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for a in self.addresses[0:-k]:
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if self.history.get(a):
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n = 0
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else:
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n += 1
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if n > nmax: nmax = n
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return nmax + 1
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def address_is_old(self, address):
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age = -1
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h = self.history.get(address, [])
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if h == ['*']:
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return True
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for tx_hash, tx_height in h:
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if tx_height == 0:
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tx_age = 0
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else:
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tx_age = self.verifier.height - tx_height + 1
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if tx_age > age:
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age = tx_age
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return age > 2
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def synchronize_sequence(self, addresses, n, for_change):
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new_addresses = []
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while True:
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if len(self.addresses) < n:
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new_addresses.append( self.create_new_address(for_change) )
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continue
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if map( lambda a: self.address_is_old(a), addresses[-n:] ) == n*[False]:
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break
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else:
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new_addresses.append( self.create_new_address(for_change) )
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return new_addresses
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def synchronize(self):
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if not self.master_public_key:
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return []
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new_addresses = []
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new_addresses += self.synchronize_sequence(self.addresses, self.gap_limit, False)
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new_addresses += self.synchronize_sequence(self.change_addresses, self.gap_limit_for_change, True)
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return new_addresses
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def is_found(self):
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return (len(self.change_addresses) > self.gap_limit_for_change ) or ( len(self.addresses) > self.gap_limit )
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def fill_addressbook(self):
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for tx_hash, tx in self.transactions.items():
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is_send, _, _ = self.get_tx_value(tx_hash)
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if is_send:
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for o in tx['outputs']:
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addr = o.get('address')
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if not self.is_mine(addr) and addr not in self.addressbook:
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self.addressbook.append(addr)
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# redo labels
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# self.update_tx_labels()
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def get_address_flags(self, addr):
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flags = "C" if self.is_change(addr) else "I" if addr in self.imported_keys.keys() else "-"
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flags += "F" if addr in self.frozen_addresses else "P" if addr in self.prioritized_addresses else "-"
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return flags
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def get_tx_value(self, tx_hash, addresses = None):
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# return the balance for that tx
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if addresses is None: addresses = self.all_addresses()
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with self.lock:
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is_send = False
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is_pruned = False
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v_in = v_out = v_out_mine = 0
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d = self.transactions.get(tx_hash)
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if not d:
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return 0, 0, 0
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for item in d.get('inputs'):
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addr = item.get('address')
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if addr in addresses:
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is_send = True
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key = item['prevout_hash'] + ':%d'%item['prevout_n']
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value = self.prevout_values.get( key )
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if value is None:
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is_pruned = True
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else:
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v_in += value
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else:
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is_pruned = True
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for item in d.get('outputs'):
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addr = item.get('address')
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value = item.get('value')
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v_out += value
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if addr in addresses:
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v_out_mine += value
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if not is_pruned:
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# all inputs are mine:
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fee = v_out - v_in
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v = v_out_mine - v_in
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else:
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# some inputs are mine:
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fee = None
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if is_send:
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v = v_out_mine - v_out
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else:
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# no input is mine
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v = v_out_mine
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return is_send, v, fee
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def get_tx_details(self, tx_hash):
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import datetime
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if not tx_hash: return ''
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tx = self.transactions.get(tx_hash)
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is_mine, v, fee = self.get_tx_value(tx_hash)
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conf, timestamp = self.verifier.get_confirmations(tx_hash)
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if conf:
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time_str = datetime.datetime.fromtimestamp(timestamp).isoformat(' ')[:-3]
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else:
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time_str = 'pending'
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inputs = map(lambda x: x.get('address'), tx['inputs'])
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outputs = map(lambda x: x.get('address'), tx['outputs'])
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tx_details = "Transaction Details" +"\n\n" \
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+ "Transaction ID:\n" + tx_hash + "\n\n" \
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+ "Status: %d confirmations\n"%conf
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if is_mine:
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if fee:
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tx_details += "Amount sent: %s\n"% format_satoshis(v-fee, False) \
|
|
+ "Transaction fee: %s\n"% format_satoshis(fee, False)
|
|
else:
|
|
tx_details += "Amount sent: %s\n"% format_satoshis(v, False) \
|
|
+ "Transaction fee: unknown\n"
|
|
else:
|
|
tx_details += "Amount received: %s\n"% format_satoshis(v, False) \
|
|
|
|
tx_details += "Date: %s\n\n"%time_str \
|
|
+ "Inputs:\n-"+ '\n-'.join(inputs) + "\n\n" \
|
|
+ "Outputs:\n-"+ '\n-'.join(outputs)
|
|
|
|
r = self.receipts.get(tx_hash)
|
|
if r:
|
|
tx_details += "\n_______________________________________" \
|
|
+ '\n\nSigned URI: ' + r[2] \
|
|
+ "\n\nSigned by: " + r[0] \
|
|
+ '\n\nSignature: ' + r[1]
|
|
|
|
return tx_details
|
|
|
|
|
|
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, address):
|
|
assert self.is_mine(address)
|
|
h = self.history.get(address,[])
|
|
if h == ['*']: return 0,0
|
|
c = u = 0
|
|
received_coins = [] # list of coins received at address
|
|
|
|
for tx_hash, tx_height in h:
|
|
d = self.transactions.get(tx_hash)
|
|
if not d: continue
|
|
for item in d.get('outputs'):
|
|
addr = item.get('address')
|
|
if addr == address:
|
|
key = tx_hash + ':%d'%item['index']
|
|
received_coins.append(key)
|
|
|
|
for tx_hash, tx_height in h:
|
|
d = self.transactions.get(tx_hash)
|
|
if not d: continue
|
|
v = 0
|
|
|
|
for item in d.get('inputs'):
|
|
addr = item.get('address')
|
|
if addr == address:
|
|
key = item['prevout_hash'] + ':%d'%item['prevout_n']
|
|
value = self.prevout_values.get( key )
|
|
if key in received_coins:
|
|
v -= value
|
|
|
|
for item in d.get('outputs'):
|
|
addr = item.get('address')
|
|
key = tx_hash + ':%d'%item['index']
|
|
if addr == address:
|
|
v += item.get('value')
|
|
|
|
if tx_height:
|
|
c += v
|
|
else:
|
|
u += v
|
|
return c, u
|
|
|
|
def get_balance(self):
|
|
conf = unconf = 0
|
|
for addr in self.all_addresses():
|
|
c, u = self.get_addr_balance(addr)
|
|
conf += c
|
|
unconf += u
|
|
return conf, unconf
|
|
|
|
|
|
def choose_tx_inputs( self, amount, fixed_fee, from_addr = None ):
|
|
""" todo: minimize tx size """
|
|
total = 0
|
|
fee = self.fee if fixed_fee is None else fixed_fee
|
|
|
|
coins = []
|
|
prioritized_coins = []
|
|
domain = [from_addr] if from_addr else self.all_addresses()
|
|
for i in self.frozen_addresses:
|
|
if i in domain: domain.remove(i)
|
|
|
|
for i in self.prioritized_addresses:
|
|
if i in domain: domain.remove(i)
|
|
|
|
for addr in domain:
|
|
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)
|
|
|
|
|
|
for addr in self.prioritized_addresses:
|
|
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
|
|
prioritized_coins.append(output)
|
|
|
|
|
|
inputs = []
|
|
coins = prioritized_coins + coins
|
|
|
|
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)] ))
|
|
fee = self.fee*len(inputs) if fixed_fee is None else fixed_fee
|
|
if total >= amount + fee: break
|
|
else:
|
|
#print "not enough funds: %s %s"%(format_satoshis(total), format_satoshis(fee))
|
|
inputs = []
|
|
return inputs, total, fee
|
|
|
|
def add_tx_change( self, outputs, amount, fee, total, change_addr=None ):
|
|
change_amount = total - ( amount + fee )
|
|
if change_amount != 0:
|
|
# normally, the update thread should ensure that the last change address is unused
|
|
if not change_addr:
|
|
change_addr = self.change_addresses[-self.gap_limit_for_change]
|
|
# Insert the change output at a random position in the outputs
|
|
posn = random.randint(0, len(outputs))
|
|
outputs[posn:posn] = [( change_addr, change_amount)]
|
|
return outputs
|
|
|
|
def sign_inputs( self, inputs, outputs, password ):
|
|
s_inputs = []
|
|
for i in range(len(inputs)):
|
|
addr, v, p_hash, p_pos, p_scriptPubKey, _ = inputs[i]
|
|
secexp, compressed = self.get_private_key(addr, password)
|
|
private_key = ecdsa.SigningKey.from_secret_exponent( secexp, curve = SECP256k1 )
|
|
public_key = private_key.get_verifying_key()
|
|
|
|
pkey = EC_KEY(secexp)
|
|
pubkey = GetPubKey(pkey.pubkey, compressed)
|
|
|
|
tx = raw_tx( inputs, outputs, for_sig = i )
|
|
sig = private_key.sign_digest( Hash( tx.decode('hex') ), sigencode = ecdsa.util.sigencode_der )
|
|
assert public_key.verify_digest( sig, Hash( tx.decode('hex') ), sigdecode = ecdsa.util.sigdecode_der)
|
|
s_inputs.append( (addr, v, p_hash, p_pos, p_scriptPubKey, [(pubkey, sig)] ) )
|
|
return s_inputs
|
|
|
|
def pw_encode(self, s, password):
|
|
if password:
|
|
secret = Hash(password)
|
|
return EncodeAES(secret, s)
|
|
else:
|
|
return s
|
|
|
|
def pw_decode(self, s, password):
|
|
if password is not None:
|
|
secret = Hash(password)
|
|
try:
|
|
d = DecodeAES(secret, s)
|
|
except:
|
|
raise BaseException('Invalid password')
|
|
return d
|
|
else:
|
|
return s
|
|
|
|
def decode_seed(self, password):
|
|
seed = self.pw_decode(self.seed, password)
|
|
|
|
# check decoded seed with master public key
|
|
curve = SECP256k1
|
|
secexp = self.stretch_key(seed)
|
|
master_private_key = ecdsa.SigningKey.from_secret_exponent( secexp, curve = SECP256k1 )
|
|
master_public_key = master_private_key.get_verifying_key().to_string().encode('hex')
|
|
if master_public_key != self.master_public_key:
|
|
print_error('invalid password (mpk)')
|
|
raise BaseException('Invalid password')
|
|
|
|
return seed
|
|
|
|
|
|
def get_history(self, address):
|
|
with self.lock:
|
|
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_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 self.verifier and 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 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] = hist
|
|
self.save()
|
|
|
|
if hist != ['*']:
|
|
for tx_hash, tx_height in hist:
|
|
if tx_height>0:
|
|
# add it in case it was previously unconfirmed
|
|
if self.verifier: 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):
|
|
with self.lock:
|
|
history = self.transactions.values()
|
|
history.sort(key = lambda x: x.get('height') if x.get('height') else 1e12)
|
|
result = []
|
|
|
|
balance = 0
|
|
for tx in history:
|
|
is_mine, v, fee = self.get_tx_value(tx['tx_hash'])
|
|
if v is not None: balance += v
|
|
c, u = self.get_balance()
|
|
|
|
if balance != c+u:
|
|
v_str = format_satoshis( c+u - balance, True, self.num_zeros)
|
|
result.append( ('', 1000, 0, c+u-balance, None, c+u-balance, None ) )
|
|
|
|
balance = c + u - balance
|
|
for tx in history:
|
|
tx_hash = tx['tx_hash']
|
|
conf, timestamp = self.verifier.get_confirmations(tx_hash) if self.verifier else (None, None)
|
|
is_mine, value, fee = self.get_tx_value(tx_hash)
|
|
if value is not None:
|
|
balance += value
|
|
|
|
result.append( (tx_hash, conf, is_mine, value, fee, balance, timestamp) )
|
|
|
|
return result
|
|
|
|
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 get_default_label(self, tx_hash):
|
|
tx = self.transactions.get(tx_hash)
|
|
default_label = ''
|
|
if tx:
|
|
is_mine, _, _ = self.get_tx_value(tx_hash)
|
|
if is_mine:
|
|
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 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 in tx['outputs']:
|
|
o_addr = o.get('address')
|
|
if self.is_mine(o_addr):
|
|
break
|
|
else:
|
|
o_addr = None
|
|
|
|
if o_addr:
|
|
dest_label = self.labels.get(o_addr)
|
|
try:
|
|
default_label = self.labels[o_addr]
|
|
except KeyError:
|
|
default_label = o_addr
|
|
|
|
return default_label
|
|
|
|
|
|
def mktx(self, outputs, label, password, fee=None, change_addr=None, from_addr= None):
|
|
|
|
for address, x in outputs:
|
|
assert self.is_valid(address)
|
|
|
|
amount = sum( map(lambda x:x[1], outputs) )
|
|
inputs, total, fee = self.choose_tx_inputs( amount, fee, from_addr )
|
|
if not inputs:
|
|
raise ValueError("Not enough funds")
|
|
|
|
if not self.use_change and not change_addr:
|
|
change_addr = inputs[-1][0]
|
|
print_error( "Sending change to", change_addr )
|
|
outputs = self.add_tx_change(outputs, amount, fee, total, change_addr)
|
|
|
|
if not self.seed:
|
|
return repr({'inputs':inputs, 'outputs':outputs})
|
|
|
|
tx = self.signed_tx(inputs, outputs, password)
|
|
|
|
for address, x in outputs:
|
|
if address not in self.addressbook and not self.is_mine(address):
|
|
self.addressbook.append(address)
|
|
|
|
if label:
|
|
tx_hash = Hash(tx.decode('hex') )[::-1].encode('hex')
|
|
self.labels[tx_hash] = label
|
|
|
|
return tx
|
|
|
|
def signed_tx(self, inputs, outputs, password):
|
|
s_inputs = self.sign_inputs( inputs, outputs, password )
|
|
tx = raw_tx( s_inputs, outputs )
|
|
return tx
|
|
|
|
def sendtx(self, tx):
|
|
# synchronous
|
|
h = self.send_tx(tx)
|
|
self.tx_event.wait()
|
|
return self.receive_tx(h)
|
|
|
|
def send_tx(self, tx):
|
|
# asynchronous
|
|
self.tx_event.clear()
|
|
tx_hash = Hash(tx.decode('hex') )[::-1].encode('hex')
|
|
self.interface.send([('blockchain.transaction.broadcast', [tx])], 'synchronizer')
|
|
return tx_hash
|
|
|
|
def receive_tx(self,tx_hash):
|
|
out = self.tx_result
|
|
if out != tx_hash:
|
|
return False, "error: " + out
|
|
if self.receipt:
|
|
self.receipts[tx_hash] = self.receipt
|
|
self.receipt = None
|
|
return True, out
|
|
|
|
|
|
def read_alias(self, alias):
|
|
# this might not be the right place for this function.
|
|
import urllib
|
|
|
|
m1 = re.match('([\w\-\.]+)@((\w[\w\-]+\.)+[\w\-]+)', alias)
|
|
m2 = re.match('((\w[\w\-]+\.)+[\w\-]+)', alias)
|
|
if m1:
|
|
url = 'https://' + m1.group(2) + '/bitcoin.id/' + m1.group(1)
|
|
elif m2:
|
|
url = 'https://' + alias + '/bitcoin.id'
|
|
else:
|
|
return ''
|
|
try:
|
|
lines = urllib.urlopen(url).readlines()
|
|
except:
|
|
return ''
|
|
|
|
# line 0
|
|
line = lines[0].strip().split(':')
|
|
if len(line) == 1:
|
|
auth_name = None
|
|
target = signing_addr = line[0]
|
|
else:
|
|
target, auth_name, signing_addr, signature = line
|
|
msg = "alias:%s:%s:%s"%(alias,target,auth_name)
|
|
print msg, signature
|
|
self.verify_message(signing_addr, signature, msg)
|
|
|
|
# other lines are signed updates
|
|
for line in lines[1:]:
|
|
line = line.strip()
|
|
if not line: continue
|
|
line = line.split(':')
|
|
previous = target
|
|
print repr(line)
|
|
target, signature = line
|
|
self.verify_message(previous, signature, "alias:%s:%s"%(alias,target))
|
|
|
|
if not self.is_valid(target):
|
|
raise ValueError("Invalid bitcoin address")
|
|
|
|
return target, signing_addr, auth_name
|
|
|
|
def update_password(self, seed, old_password, new_password):
|
|
if new_password == '': new_password = None
|
|
self.use_encryption = (new_password != None)
|
|
self.seed = self.pw_encode( seed, new_password)
|
|
self.config.set_key('seed', self.seed, True)
|
|
for k in self.imported_keys.keys():
|
|
a = self.imported_keys[k]
|
|
b = self.pw_decode(a, old_password)
|
|
c = self.pw_encode(b, new_password)
|
|
self.imported_keys[k] = c
|
|
self.save()
|
|
|
|
def get_alias(self, alias, interactive = False, show_message=None, question = None):
|
|
try:
|
|
target, signing_address, auth_name = self.read_alias(alias)
|
|
except BaseException, e:
|
|
# raise exception if verify fails (verify the chain)
|
|
if interactive:
|
|
show_message("Alias error: " + str(e))
|
|
return
|
|
|
|
print target, signing_address, auth_name
|
|
|
|
if auth_name is None:
|
|
a = self.aliases.get(alias)
|
|
if not a:
|
|
msg = "Warning: the alias '%s' is self-signed.\nThe signing address is %s.\n\nDo you want to add this alias to your list of contacts?"%(alias,signing_address)
|
|
if interactive and question( msg ):
|
|
self.aliases[alias] = (signing_address, target)
|
|
else:
|
|
target = None
|
|
else:
|
|
if signing_address != a[0]:
|
|
msg = "Warning: the key of alias '%s' has changed since your last visit! It is possible that someone is trying to do something nasty!!!\nDo you accept to change your trusted key?"%alias
|
|
if interactive and question( msg ):
|
|
self.aliases[alias] = (signing_address, target)
|
|
else:
|
|
target = None
|
|
else:
|
|
if signing_address not in self.authorities.keys():
|
|
msg = "The alias: '%s' links to %s\n\nWarning: this alias was signed by an unknown key.\nSigning authority: %s\nSigning address: %s\n\nDo you want to add this key to your list of trusted keys?"%(alias,target,auth_name,signing_address)
|
|
if interactive and question( msg ):
|
|
self.authorities[signing_address] = auth_name
|
|
else:
|
|
target = None
|
|
|
|
if target:
|
|
self.aliases[alias] = (signing_address, target)
|
|
|
|
return target
|
|
|
|
|
|
def parse_url(self, url, show_message, question):
|
|
o = url[8:].split('?')
|
|
address = o[0]
|
|
if len(o)>1:
|
|
params = o[1].split('&')
|
|
else:
|
|
params = []
|
|
|
|
amount = label = message = signature = identity = ''
|
|
for p in params:
|
|
k,v = p.split('=')
|
|
uv = urldecode(v)
|
|
if k == 'amount': amount = uv
|
|
elif k == 'message': message = uv
|
|
elif k == 'label': label = uv
|
|
elif k == 'signature':
|
|
identity, signature = uv.split(':')
|
|
url = url.replace('&%s=%s'%(k,v),'')
|
|
else:
|
|
print k,v
|
|
|
|
if label and self.labels.get(address) != label:
|
|
if question('Give label "%s" to address %s ?'%(label,address)):
|
|
if address not in self.addressbook and address not in self.all_addresses():
|
|
self.addressbook.append(address)
|
|
self.labels[address] = label
|
|
|
|
if signature:
|
|
if re.match('^(|([\w\-\.]+)@)((\w[\w\-]+\.)+[\w\-]+)$', identity):
|
|
signing_address = self.get_alias(identity, True, show_message, question)
|
|
elif self.is_valid(identity):
|
|
signing_address = identity
|
|
else:
|
|
signing_address = None
|
|
if not signing_address:
|
|
return
|
|
try:
|
|
self.verify_message(signing_address, signature, url )
|
|
self.receipt = (signing_address, signature, url)
|
|
except:
|
|
show_message('Warning: the URI contains a bad signature.\nThe identity of the recipient cannot be verified.')
|
|
address = amount = label = identity = message = ''
|
|
|
|
if re.match('^(|([\w\-\.]+)@)((\w[\w\-]+\.)+[\w\-]+)$', address):
|
|
payto_address = self.get_alias(address, True, show_message, question)
|
|
if payto_address:
|
|
address = address + ' <' + payto_address + '>'
|
|
|
|
return address, amount, label, message, signature, identity, url
|
|
|
|
|
|
|
|
def freeze(self,addr):
|
|
if addr in self.all_addresses() and addr not in self.frozen_addresses:
|
|
self.unprioritize(addr)
|
|
self.frozen_addresses.append(addr)
|
|
self.config.set_key('frozen_addresses', self.frozen_addresses, True)
|
|
return True
|
|
else:
|
|
return False
|
|
|
|
def unfreeze(self,addr):
|
|
if addr in self.all_addresses() and addr in self.frozen_addresses:
|
|
self.frozen_addresses.remove(addr)
|
|
self.config.set_key('frozen_addresses', self.frozen_addresses, True)
|
|
return True
|
|
else:
|
|
return False
|
|
|
|
def prioritize(self,addr):
|
|
if addr in self.all_addresses() and addr not in self.prioritized_addresses:
|
|
self.unfreeze(addr)
|
|
self.prioritized_addresses.append(addr)
|
|
self.config.set_key('prioritized_addresses', self.prioritized_addresses, True)
|
|
return True
|
|
else:
|
|
return False
|
|
|
|
def unprioritize(self,addr):
|
|
if addr in self.all_addresses() and addr in self.prioritized_addresses:
|
|
self.prioritized_addresses.remove(addr)
|
|
self.config.set_key('prioritized_addresses', self.prioritized_addresses, True)
|
|
return True
|
|
else:
|
|
return False
|
|
|
|
def save(self):
|
|
s = {
|
|
'use_encryption': self.use_encryption,
|
|
'use_change': self.use_change,
|
|
'fee': self.fee,
|
|
'addresses': self.addresses,
|
|
'change_addresses': self.change_addresses,
|
|
'addr_history': self.history,
|
|
'labels': self.labels,
|
|
'contacts': self.addressbook,
|
|
'imported_keys': self.imported_keys,
|
|
'aliases': self.aliases,
|
|
'authorities': self.authorities,
|
|
'receipts': self.receipts,
|
|
'num_zeros': self.num_zeros,
|
|
'frozen_addresses': self.frozen_addresses,
|
|
'prioritized_addresses': self.prioritized_addresses,
|
|
'gap_limit': self.gap_limit,
|
|
'transactions': self.transactions,
|
|
'requested_amounts': self.requested_amounts,
|
|
}
|
|
for k, v in s.items():
|
|
self.config.set_key(k,v)
|
|
self.config.save()
|
|
|
|
def set_verifier(self, verifier):
|
|
self.verifier = verifier
|
|
|
|
# review stored transactions and send them to the verifier
|
|
# (they are not necessarily in the history, because history items might have have been pruned)
|
|
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)
|
|
|
|
# review transactions that are in the 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 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
|
|
if hist != ['*']:
|
|
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
|
|
|
|
# check that we are not "orphaning" a transaction
|
|
old_hist = self.history.get(addr,[])
|
|
if old_hist == ['*']: return True
|
|
|
|
for tx_hash, height in old_hist:
|
|
if tx_hash in map(lambda x:x[0], hist): continue
|
|
found = False
|
|
for _addr, _hist in self.history.items():
|
|
if _addr == addr: continue
|
|
if _hist == ['*']: continue
|
|
_tx_hist = map(lambda x:x[0], _hist)
|
|
if tx_hash in _tx_hist:
|
|
found = True
|
|
break
|
|
|
|
if not found:
|
|
tx = self.transactions.get(tx_hash)
|
|
# tx might not be there
|
|
if not tx: continue
|
|
|
|
# already verified?
|
|
if tx.get('height'):
|
|
continue
|
|
# unconfirmed tx
|
|
print_error("new history is orphaning transaction:", tx_hash)
|
|
# check that all outputs are not mine, request histories
|
|
ext_requests = []
|
|
for o in tx.get('outputs'):
|
|
_addr = o.get('address')
|
|
# assert not self.is_mine(_addr)
|
|
ext_requests.append( ('blockchain.address.get_history', [_addr]) )
|
|
|
|
ext_h = self.interface.synchronous_get(ext_requests)
|
|
height = None
|
|
for h in ext_h:
|
|
if h == ['*']: continue
|
|
for item in h:
|
|
if item.get('tx_hash') == tx_hash:
|
|
height = item.get('height')
|
|
tx['height'] = height
|
|
if height:
|
|
print_error("found height for", tx_hash, height)
|
|
self.verifier.add(tx_hash, height)
|
|
else:
|
|
print_error("removing orphaned tx from history", tx_hash)
|
|
self.transactions.pop(tx_hash)
|
|
|
|
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', lambda: self.wallet.set_up_to_date(False))
|
|
self.wallet.interface.register_callback('connected', lambda: self.interface.send([('server.banner',[])],'synchronizer') )
|
|
self.was_updated = True
|
|
self.running = False
|
|
self.lock = threading.Lock()
|
|
|
|
def stop(self):
|
|
with self.lock: self.running = False
|
|
self.interface.poke('synchronizer')
|
|
|
|
def is_running(self):
|
|
with self.lock: return self.running
|
|
|
|
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.is_up_to_date():
|
|
self.wallet.set_up_to_date(False)
|
|
self.was_updated = True
|
|
return
|
|
|
|
self.wallet.set_up_to_date(True)
|
|
self.was_updated = True
|
|
|
|
|
|
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):
|
|
with self.lock: self.running = True
|
|
|
|
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 self.is_running():
|
|
# 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')
|
|
|
|
# poke sends None. (needed during stop)
|
|
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:
|
|
if requested_histories.get(addr) is None:
|
|
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) )
|
|
|
|
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.interface.trigger_callback('banner')
|
|
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
|
|
return d
|
|
|
|
|