def on_sig(self, nick, sigb64):
"""Processes transaction signatures from counterparties.
Returns True if all signatures received correctly, else
returns False
"""
if self.aborted:
return False
sig = base64.b64decode(sigb64).encode('hex')
inserted_sig = False
txhex = btc.serialize(self.latest_tx)
# batch retrieval of utxo data
utxo = {}
ctr = 0
for index, ins in enumerate(self.latest_tx['ins']):
utxo_for_checking = ins['outpoint']['hash'] + ':' + str(
ins['outpoint']['index'])
#'deadbeef' markers mean our own input scripts are not ''
if (ins['script'] != ''):
continue
utxo[ctr] = [index, utxo_for_checking]
ctr += 1
utxo_data = jm_single().bc_interface.query_utxo_set(
[x[1] for x in utxo.values()])
# insert signatures
for i, u in utxo.iteritems():
if utxo_data[i] is None:
continue
sig_good = btc.verify_tx_input(txhex, u[0], utxo_data[i]['script'],
*btc.deserialize_script(sig))
if sig_good:
jlog.debug('found good sig at index=%d' % (u[0]))
self.latest_tx['ins'][u[0]]['script'] = sig
inserted_sig = True
# check if maker has sent everything possible
self.utxos[nick].remove(u[1])
if len(self.utxos[nick]) == 0:
jlog.debug(('nick = {} sent all sigs, removing from '
'nonrespondant list').format(nick))
self.nonrespondants.remove(nick)
break
if not inserted_sig:
jlog.debug('signature did not match anything in the tx')
# TODO what if the signature doesnt match anything
# nothing really to do except drop it, carry on and wonder why the
# other guy sent a failed signature
tx_signed = True
for ins in self.latest_tx['ins']:
if ins['script'] == '':
tx_signed = False
if not tx_signed:
return False
assert not len(self.nonrespondants)
jlog.debug('all makers have sent their signatures')
self.taker_info_callback("INFO", "Transaction is valid, signing..")
jlog.debug("schedule item was: " +
str(self.schedule[self.schedule_index]))
return self.self_sign_and_push()
def on_sig(self, nick, sigb64):
"""Processes transaction signatures from counterparties.
Returns True if all signatures received correctly, else
returns False
"""
if self.aborted:
return False
sig = base64.b64decode(sigb64).encode('hex')
inserted_sig = False
txhex = btc.serialize(self.latest_tx)
# batch retrieval of utxo data
utxo = {}
ctr = 0
for index, ins in enumerate(self.latest_tx['ins']):
utxo_for_checking = ins['outpoint']['hash'] + ':' + str(
ins['outpoint']['index'])
#'deadbeef' markers mean our own input scripts are not ''
if (ins['script'] != ''):
continue
utxo[ctr] = [index, utxo_for_checking]
ctr += 1
utxo_data = jm_single().bc_interface.query_utxo_set(
[x[1] for x in utxo.values()])
# insert signatures
for i, u in utxo.iteritems():
if utxo_data[i] is None:
continue
#Check if the sender serialize_scripted the witness
#item into the sig message; if so, also pick up the amount
#from the utxo data retrieved from the blockchain to verify
#the segwit-style signature. Note that this allows a mixed
#SW/non-SW transaction as each utxo is interpreted separately.
sig_deserialized = btc.deserialize_script(sig)
if len(sig_deserialized) == 2:
ver_sig, ver_pub = sig_deserialized
wit = None
elif len(sig_deserialized) == 3:
ver_sig, ver_pub, wit = sig_deserialized
else:
jlog.debug("Invalid signature message - more than 3 items")
break
ver_amt = utxo_data[i]['value'] if wit else None
sig_good = btc.verify_tx_input(txhex,
u[0],
utxo_data[i]['script'],
ver_sig,
ver_pub,
witness=wit,
amount=ver_amt)
if sig_good:
jlog.debug('found good sig at index=%d' % (u[0]))
if wit:
self.latest_tx["ins"][u[0]]["txinwitness"] = [
ver_sig, ver_pub
]
self.latest_tx["ins"][u[0]]["script"] = "16" + wit
else:
self.latest_tx["ins"][u[0]]["script"] = sig
inserted_sig = True
# check if maker has sent everything possible
self.utxos[nick].remove(u[1])
if len(self.utxos[nick]) == 0:
jlog.debug(('nick = {} sent all sigs, removing from '
'nonrespondant list').format(nick))
self.nonrespondants.remove(nick)
break
if not inserted_sig:
jlog.debug('signature did not match anything in the tx')
# TODO what if the signature doesnt match anything
# nothing really to do except drop it, carry on and wonder why the
# other guy sent a failed signature
tx_signed = True
for ins in self.latest_tx['ins']:
if ins['script'] == '':
tx_signed = False
if not tx_signed:
return False
assert not len(self.nonrespondants)
jlog.info('all makers have sent their signatures')
self.taker_info_callback("INFO", "Transaction is valid, signing..")
jlog.debug("schedule item was: " +
str(self.schedule[self.schedule_index]))
return self.self_sign_and_push()
def add_signature(self, nick, sigb64):
if nick not in self.nonrespondants:
log.debug(('add_signature => nick={} '
'not in nonrespondants {}').format(
nick, self.nonrespondants))
return
sig = base64.b64decode(sigb64).encode('hex')
inserted_sig = False
txhex = btc.serialize(self.latest_tx)
# batch retrieval of utxo data
utxo = {}
ctr = 0
for index, ins in enumerate(self.latest_tx['ins']):
utxo_for_checking = ins['outpoint']['hash'] + ':' + str(
ins['outpoint']['index'])
if (ins['script'] != '' or
utxo_for_checking in self.input_utxos.keys()):
continue
utxo[ctr] = [index, utxo_for_checking]
ctr += 1
utxo_data = jm_single().bc_interface.query_utxo_set(
[x[1] for x in utxo.values()])
# insert signatures
for i, u in utxo.iteritems():
if utxo_data[i] is None:
continue
sig_good = btc.verify_tx_input(
txhex, u[0], utxo_data[i]['script'],
*btc.deserialize_script(sig))
if sig_good:
log.debug('found good sig at index=%d' % (u[0]))
self.latest_tx['ins'][u[0]]['script'] = sig
inserted_sig = True
# check if maker has sent everything possible
self.utxos[nick].remove(u[1])
if len(self.utxos[nick]) == 0:
log.debug(('nick = {} sent all sigs, removing from '
'nonrespondant list').format(nick))
self.nonrespondants.remove(nick)
break
if not inserted_sig:
log.debug('signature did not match anything in the tx')
# TODO what if the signature doesnt match anything
# nothing really to do except drop it, carry on and wonder why the
# other guy sent a failed signature
tx_signed = True
for ins in self.latest_tx['ins']:
if ins['script'] == '':
tx_signed = False
if not tx_signed:
return
self.end_timeout_thread = True
self.all_responded = True
with self.timeout_lock:
self.timeout_lock.notify()
log.debug('all makers have sent their signatures')
for index, ins in enumerate(self.latest_tx['ins']):
# remove placeholders
if ins['script'] == 'deadbeef':
ins['script'] = ''
if self.finishcallback is not None:
log.debug("About to call finishcallback")
self.finishcallback(self)
def add_signature(self, nick, sigb64):
if nick not in self.nonrespondants:
log.debug(
('add_signature => nick={} '
'not in nonrespondants {}').format(nick, self.nonrespondants))
return
sig = base64.b64decode(sigb64).encode('hex')
inserted_sig = False
txhex = btc.serialize(self.latest_tx)
# batch retrieval of utxo data
utxo = {}
ctr = 0
for index, ins in enumerate(self.latest_tx['ins']):
utxo_for_checking = ins['outpoint']['hash'] + ':' + str(
ins['outpoint']['index'])
if (ins['script'] != ''
or utxo_for_checking in self.input_utxos.keys()):
continue
utxo[ctr] = [index, utxo_for_checking]
ctr += 1
utxo_data = jm_single().bc_interface.query_utxo_set(
[x[1] for x in utxo.values()])
# insert signatures
for i, u in utxo.iteritems():
if utxo_data[i] is None:
continue
sig_good = btc.verify_tx_input(txhex, u[0], utxo_data[i]['script'],
*btc.deserialize_script(sig))
if sig_good:
log.debug('found good sig at index=%d' % (u[0]))
self.latest_tx['ins'][u[0]]['script'] = sig
inserted_sig = True
# check if maker has sent everything possible
self.utxos[nick].remove(u[1])
if len(self.utxos[nick]) == 0:
log.debug(('nick = {} sent all sigs, removing from '
'nonrespondant list').format(nick))
self.nonrespondants.remove(nick)
break
if not inserted_sig:
log.debug('signature did not match anything in the tx')
# TODO what if the signature doesnt match anything
# nothing really to do except drop it, carry on and wonder why the
# other guy sent a failed signature
tx_signed = True
for ins in self.latest_tx['ins']:
if ins['script'] == '':
tx_signed = False
if not tx_signed:
return
self.end_timeout_thread = True
self.all_responded = True
with self.timeout_lock:
self.timeout_lock.notify()
log.debug('all makers have sent their signatures')
for index, ins in enumerate(self.latest_tx['ins']):
# remove placeholders
if ins['script'] == 'deadbeef':
ins['script'] = ''
if self.finishcallback is not None:
log.debug("About to call finishcallback")
self.finishcallback(self)