#!/usr/bin/env python
#
# Electrum - lightweight Bitcoin client
# Copyright (C) 2011 thomasv@gitorious
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import sys
import base64
import os
import re
import hashlib
import copy
import operator
import ast
import threading
import random
import aes
import Queue
import time
from util import print_msg, print_error, user_dir, format_satoshis
from bitcoin import *
# URL decode
_ud = re.compile('%([0-9a-hA-H]{2})', re.MULTILINE)
urldecode = lambda x: _ud.sub(lambda m: chr(int(m.group(1), 16)), x)
# AES encryption
EncodeAES = lambda secret, s: base64.b64encode(aes.encryptData(secret,s))
DecodeAES = lambda secret, e: aes.decryptData(secret, base64.b64decode(e))
def pw_encode(s, password):
if password:
secret = Hash(password)
return EncodeAES(secret, s)
else:
return s
def pw_decode(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
from version import ELECTRUM_VERSION, SEED_VERSION
class Wallet:
def __init__(self, config={}):
self.config = config
self.electrum_version = ELECTRUM_VERSION
self.gap_limit_for_change = 3 # constant
# saved fields
self.seed_version = config.get('seed_version', SEED_VERSION)
self.gap_limit = config.get('gap_limit', 5)
self.use_change = config.get('use_change',True)
self.fee = int(config.get('fee',100000))
self.num_zeros = int(config.get('num_zeros',0))
self.use_encryption = config.get('use_encryption', False)
self.seed = config.get('seed', '') # encrypted
self.labels = config.get('labels', {})
self.aliases = config.get('aliases', {}) # aliases for addresses
self.authorities = config.get('authorities', {}) # trusted addresses
self.frozen_addresses = config.get('frozen_addresses',[])
self.prioritized_addresses = config.get('prioritized_addresses',[])
self.receipts = config.get('receipts',{}) # signed URIs
self.addressbook = config.get('contacts', [])
self.imported_keys = config.get('imported_keys',{})
self.history = config.get('addr_history',{}) # address -> list(txid, height)
self.tx_height = config.get('tx_height',{})
self.requested_amounts = config.get('requested_amounts',{})
self.accounts = config.get('accounts', {}) # this should not include public keys
self.sequences = {}
self.sequences[0] = DeterministicSequence(self.config.get('master_public_key'))
if self.accounts.get(0) is None:
self.accounts[0] = { 0:[], 1:[], 'name':'Main account' }
self.transactions = {}
tx = config.get('transactions',{})
try:
for k,v in tx.items(): self.transactions[k] = Transaction(v)
except:
print_msg("Warning: Cannot deserialize transactions. skipping")
# plugins
self.plugins = []
self.plugin_hooks = {}
# not saved
self.prevout_values = {} # my own transaction outputs
self.spent_outputs = []
self.receipt = None # next receipt
self.banner = ''
# spv
self.verifier = None
# there is a difference between wallet.up_to_date and interface.is_up_to_date()
# interface.is_up_to_date() returns true when all requests have been answered and processed
# wallet.up_to_date is true when the wallet is synchronized (stronger requirement)
self.up_to_date = False
self.lock = threading.Lock()
self.tx_event = threading.Event()
if self.seed_version != SEED_VERSION:
raise ValueError("This wallet seed is deprecated. Please run upgrade.py for a diagnostic.")
for tx_hash in self.transactions.keys():
self.update_tx_outputs(tx_hash)
# plugins
def set_hook(self, name, callback):
h = self.plugin_hooks.get(name, [])
h.append(callback)
self.plugin_hooks[name] = h
def unset_hook(self, name, callback):
h = self.plugin_hooks.get(name,[])
if callback in h: h.remove(callback)
self.plugin_hooks[name] = h
def init_plugins(self, plugins):
self.plugins = plugins
for p in plugins:
try:
p.init(self)
except:
import traceback
print_msg("Error:cannot initialize plugin",p)
traceback.print_exc(file=sys.stdout)
def set_up_to_date(self,b):
with self.lock: self.up_to_date = b
def is_up_to_date(self):
with self.lock: return self.up_to_date
def update(self):
self.up_to_date = False
self.interface.poke('synchronizer')
while not self.is_up_to_date(): time.sleep(0.1)
def import_key(self, sec, password):
# check password
seed = self.decode_seed(password)
address = address_from_private_key(sec)
if self.is_mine(address):
raise BaseException('Address already in wallet')
# store the originally requested keypair into the imported keys table
self.imported_keys[address] = pw_encode(sec, password )
return address
def init_seed(self, seed):
if self.seed: raise BaseException("a seed exists")
if not seed:
seed = random_seed(128)
self.seed = seed
self.config.set_key('seed', self.seed, True)
self.config.set_key('seed_version', self.seed_version, True)
mpk = DeterministicSequence.mpk_from_seed(self.seed)
self.config.set_key('master_public_key', mpk, True)
self.sequences[0] = DeterministicSequence(mpk)
self.accounts[0] = { 0:[], 1:[], 'name':'Main account' }
self.config.set_key('accounts', self.accounts, True)
def addresses(self, include_change = False):
o = self.imported_keys.keys()
for a in self.accounts.values():
o += a[0]
if include_change: o += a[1]
return o
def is_mine(self, address):
return address in self.addresses(True)
def is_change(self, address):
#return address in self.change_addresses
return False
def get_master_public_key(self):
return self.sequence.master_public_key
def get_address_index(self, address):
if address in self.imported_keys.keys():
raise BaseException("imported key")
for account in self.accounts.keys():
for for_change in [0,1]:
addresses = self.accounts[account][for_change]
for addr in addresses:
if address == addr:
return account, (for_change, addresses.index(addr))
raise BaseException("not found")
def get_public_key(self, address):
account, sequence = self.get_address_index(address)
return self.sequences[account].get_pubkey( sequence )
def decode_seed(self, password):
seed = pw_decode(self.seed, password)
self.sequences[0].check_seed(seed)
return seed
def get_private_key(self, address, password):
return self.get_private_keys([address], password).get(address)
def get_private_keys(self, addresses, password):
# decode seed in any case, in order to test the password
seed = self.decode_seed(password)
out = {}
l_sequences = []
l_addresses = []
for address in addresses:
if address in self.imported_keys.keys():
out[address] = pw_decode( self.imported_keys[address], password )
else:
account, sequence = self.get_address_index(address)
if account == 0:
l_sequences.append(sequence)
l_addresses.append(address)
pk = self.sequences[0].get_private_keys(l_sequences, seed)
for i, address in enumerate(l_addresses): out[address] = pk[i]
return out
def signrawtransaction(self, tx, input_info, private_keys, password):
unspent_coins = self.get_unspent_coins()
seed = self.decode_seed(password)
# convert private_keys to dict
pk = {}
for sec in private_keys:
address = address_from_private_key(sec)
pk[address] = sec
private_keys = pk
for txin in tx.inputs:
# convert to own format
txin['tx_hash'] = txin['prevout_hash']
txin['index'] = txin['prevout_n']
for item in input_info:
if item.get('txid') == txin['tx_hash'] and item.get('vout') == txin['index']:
txin['raw_output_script'] = item['scriptPubKey']
txin['redeemScript'] = item.get('redeemScript')
txin['electrumKeyID'] = item.get('electrumKeyID')
break
else:
for item in unspent_coins:
if txin['tx_hash'] == item['tx_hash'] and txin['index'] == item['index']:
txin['raw_output_script'] = item['raw_output_script']
break
else:
# if neither, we might want to get it from the server..
raise
# find the address:
if txin.get('electrumKeyID'):
account, sequence = txin.get('electrumKeyID')
sec = self.sequences[account].get_private_key(sequence, seed)
addr = self.sequences[account].get_address(sequence)
txin['address'] = addr
private_keys[addr] = sec
elif txin.get("redeemScript"):
txin['address'] = hash_160_to_bc_address(hash_160(txin.get("redeemScript").decode('hex')), 5)
elif txin.get("raw_output_script"):
import deserialize
addr = deserialize.get_address_from_output_script(txin.get("raw_output_script").decode('hex'))
sec = self.get_private_key(addr, password)
if sec:
private_keys[addr] = sec
txin['address'] = addr
tx.sign( private_keys )
def sign_message(self, address, message, password):
sec = self.get_private_key(address, password)
key = regenerate_key(sec)
compressed = is_compressed(sec)
return key.sign_message(message, compressed, address)
def create_new_address(self, account, for_change):
addresses = self.accounts[account][for_change]
n = len(addresses)
address = self.get_new_address( account, for_change, n)
self.accounts[account][for_change].append(address)
self.history[address] = []
return address
def get_new_address(self, account, for_change, n):
return self.sequences[account].get_address((for_change, n))
print address
return address
def change_gap_limit(self, value):
if value >= self.gap_limit:
self.gap_limit = value
self.save()
self.interface.poke('synchronizer')
return True
elif value >= self.min_acceptable_gap():
for key, account in self.accounts.items():
addresses = account[0]
k = self.num_unused_trailing_addresses(addresses)
n = len(addresses) - k + value
addresses = addresses[0:n]
self.accounts[key][0] = addresses
self.gap_limit = value
self.save()
return True
else:
return False
def num_unused_trailing_addresses(self, addresses):
k = 0
for a in addresses[::-1]:
if self.history.get(a):break
k = k + 1
return k
def min_acceptable_gap(self):
# fixme: this assumes wallet is synchronized
n = 0
nmax = 0
for account in self.accounts.values():
addresses = account[0]
k = self.num_unused_trailing_addresses(addresses)
for a in addresses[0:-k]:
if self.history.get(a):
n = 0
else:
n += 1
if n > nmax: nmax = n
return nmax + 1
def address_is_old(self, address):
age = -1
h = self.history.get(address, [])
if h == ['*']:
return True
for tx_hash, tx_height in h:
if tx_height == 0:
tx_age = 0
else:
tx_age = self.verifier.height - tx_height + 1
if tx_age > age:
age = tx_age
return age > 2
def synchronize_sequence(self, account, for_change):
limit = self.gap_limit_for_change if for_change else self.gap_limit
addresses = self.accounts[account][for_change]
new_addresses = []
while True:
if len(addresses) < limit:
new_addresses.append( self.create_new_address(account, for_change) )
continue
if map( lambda a: self.address_is_old(a), addresses[-limit:] ) == limit*[False]:
break
else:
new_addresses.append( self.create_new_address(account, for_change) )
return new_addresses
def synchronize_account(self, account):
new = []
new += self.synchronize_sequence(account, 0)
new += self.synchronize_sequence(account, 1)
return new
def synchronize(self):
new = []
for account in self.accounts.keys():
new += self.synchronize_account(account)
return new
def is_found(self):
return self.history.values() != [[]] * len(self.history)
def fill_addressbook(self):
for tx_hash, tx in self.transactions.items():
is_send, _, _ = self.get_tx_value(tx)
if is_send:
for addr, v in tx.outputs:
if not self.is_mine(addr) and addr not in self.addressbook:
self.addressbook.append(addr)
# redo labels
# self.update_tx_labels()
def get_address_flags(self, addr):
flags = "C" if self.is_change(addr) else "I" if addr in self.imported_keys.keys() else "-"
flags += "F" if addr in self.frozen_addresses else "P" if addr in self.prioritized_addresses else "-"
return flags
def get_tx_value(self, tx, addresses=None):
if addresses is None: addresses = self.addresses(True)
return tx.get_value(addresses, self.prevout_values)
def get_tx_details(self, tx_hash):
import datetime
if not tx_hash: return ''
tx = self.transactions.get(tx_hash)
is_mine, v, fee = self.get_tx_value(tx)
conf, timestamp = self.verifier.get_confirmations(tx_hash)
if timestamp:
time_str = datetime.datetime.fromtimestamp(timestamp).isoformat(' ')[:-3]
else:
time_str = 'pending'
inputs = map(lambda x: x.get('address'), tx.inputs)
outputs = map(lambda x: x.get('address'), tx.d['outputs'])
tx_details = "Transaction Details" +"\n\n" \
+ "Transaction ID:\n" + tx_hash + "\n\n" \
+ "Status: %d confirmations\n"%conf
if is_mine:
if fee:
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)
i = 0
for item in tx.outputs:
addr, value = item
key = tx_hash+ ':%d'%i
with self.lock:
self.prevout_values[key] = value
i += 1
for item in tx.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:
tx = self.transactions.get(tx_hash)
if not tx: continue
i = 0
for item in tx.outputs:
addr, value = item
if addr == address:
key = tx_hash + ':%d'%i
received_coins.append(key)
i +=1
for tx_hash, tx_height in h:
tx = self.transactions.get(tx_hash)
if not tx: continue
v = 0
for item in tx.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
i = 0
for item in tx.outputs:
addr, value = item
key = tx_hash + ':%d'%i
if addr == address:
v += value
i += 1
if tx_height:
c += v
else:
u += v
return c, u
def get_account_addresses(self, a):
ac = self.accounts[a]
return ac[0] + ac[1]
def get_imported_balance(self):
cc = uu = 0
for addr in self.imported_keys.keys():
c, u = self.get_addr_balance(addr)
cc += c
uu += u
return cc, uu
def get_account_balance(self, account):
conf = unconf = 0
for addr in self.get_account_addresses(account):
c, u = self.get_addr_balance(addr)
conf += c
unconf += u
return conf, unconf
def get_balance(self):
cc = uu = 0
for a in self.accounts.keys():
c, u = self.get_account_balance(a)
cc += c
uu += u
c, u = self.get_imported_balance()
cc += c
uu += u
return cc, uu
def get_unspent_coins(self, domain=None):
coins = []
if domain is None: domain = self.addresses(True)
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.d.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)
return coins
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.addresses(True)
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)
coins = self.get_unspent_coins(domain)
prioritized_coins = self.get_unspent_coins(self.prioritized_addresses)
inputs = []
coins = prioritized_coins + coins
for item in coins:
addr = item.get('address')
v = item.get('value')
total += v
inputs.append( item )
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_addresses = self.accounts[0][1]
change_addr = 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 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, tx_height):
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
self.tx_height[tx_hash] = tx_height
#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
txh = self.tx_height.get(tx_hash)
if txh is not None and txh != tx_height:
print_error( "changing height for tx", tx_hash )
self.tx_height[tx_hash] = tx_height
def get_tx_history(self):
with self.lock:
history = self.transactions.items()
history.sort(key = lambda x: self.tx_height.get(x[0]) if self.tx_height.get(x[0]) else 1e12)
result = []
balance = 0
for tx_hash, tx in history:
is_mine, v, fee = self.get_tx_value(tx)
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_hash, tx in history:
conf, timestamp = self.verifier.get_confirmations(tx_hash) if self.verifier else (None, None)
is_mine, value, fee = self.get_tx_value(tx)
if value is not None:
balance += value
result.append( (tx_hash, conf, is_mine, value, fee, balance, timestamp) )
return result
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)
if is_mine:
for o in tx.outputs:
o_addr, _ = o
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
if self.is_mine(o_addr) and not self.is_change(o_addr):
break
else:
for o in tx.outputs:
o_addr, _ = o
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, password, fee=None, change_addr=None, from_addr= None):
for address, x in outputs:
assert 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]['address']
print_error( "Sending change to", change_addr )
outputs = self.add_tx_change(outputs, amount, fee, total, change_addr)
tx = Transaction.from_io(inputs, outputs)
pk_addresses = []
for i in range(len(tx.inputs)):
txin = tx.inputs[i]
address = txin['address']
if address in self.imported_keys.keys():
pk_addresses.append(address)
continue
account, sequence = self.get_address_index(address)
txin['electrumKeyID'] = (account, sequence) # used by the server to find the key
pk_addr, redeemScript = self.sequences[account].get_input_info(sequence)
if redeemScript: txin['redeemScript'] = redeemScript
pk_addresses.append(pk_addr)
# get all private keys at once.
private_keys = self.get_private_keys(pk_addresses, password)
tx.sign(private_keys)
for address, x in outputs:
if address not in self.addressbook and not self.is_mine(address):
self.addressbook.append(address)
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()
self.interface.send([('blockchain.transaction.broadcast', [str(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
EC_KEY.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
EC_KEY.verify_message(previous, signature, "alias:%s:%s"%(alias,target))
if not 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 = 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 = pw_decode(a, old_password)
c = 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 not self.is_mine(address):
self.addressbook.append(address)
self.labels[address] = label
if signature:
if re.match('^(|([\w\-\.]+)@)((\w[\w\-]+\.)+[\w\-]+)$', identity):
signing_address = self.get_alias(identity, True, show_message, question)
elif is_valid(identity):
signing_address = identity
else:
signing_address = None
if not signing_address:
return
try:
EC_KEY.verify_message(signing_address, signature, url )
self.receipt = (signing_address, signature, url)
except:
show_message('Warning: the URI contains a bad signature.\nThe identity of the recipient cannot be verified.')
address = amount = label = identity = message = ''
if re.match('^(|([\w\-\.]+)@)((\w[\w\-]+\.)+[\w\-]+)$', 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 self.is_mine(addr) 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 self.is_mine(addr) 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 is_mine(addr) 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 is_mine(addr) 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):
tx = {}
for k,v in self.transactions.items():
tx[k] = str(v)
s = {
'use_encryption': self.use_encryption,
'use_change': self.use_change,
'fee': self.fee,
'accounts': self.accounts,
'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': tx,
'tx_height': self.tx_height,
'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 = self.tx_height[tx_hash]
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
txh = self.tx_height.get(tx_hash)
if txh is not None and txh != tx_height:
print_error( "changing height for tx", tx_hash )
self.tx_height[tx_hash] = tx_height
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 tx.has_address(addr):
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 self.tx_height.get(tx_hash):
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')
self.tx_height[tx_hash] = 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 tx.has_address(addr):
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.addresses(True))
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]
assert tx_hash == hash_encode(Hash(result.decode('hex')))
tx = Transaction(result)
self.wallet.receive_tx_callback(tx_hash, tx, tx_height)
self.was_updated = True
requested_tx.remove( (tx_hash, tx_height) )
print_error("received tx:", tx)
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