AaronFiore/electrum
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ln: remove EncumberedTransaction

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This commit is contained in:
Janus
2018-12-20 18:09:55 +01:00
committed by ThomasV
parent 60508725b6
commit 2c1fcb2f54
6 changed files with 76 additions and 66 deletions
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69
electrum/lnsweep.py
View File

@@ -7,8 +7,7 @@ from typing import Optional, Dict, List, Tuple, TYPE_CHECKING
from .util import bfh, bh2u, print_error
from .bitcoin import TYPE_ADDRESS, redeem_script_to_address, dust_threshold
from . import ecc
from .lnutil import (EncumberedTransaction,
make_commitment_output_to_remote_address, make_commitment_output_to_local_witness_script,
from .lnutil import (make_commitment_output_to_remote_address, make_commitment_output_to_local_witness_script,
derive_privkey, derive_pubkey, derive_blinded_pubkey, derive_blinded_privkey,
make_htlc_tx_witness, make_htlc_tx_with_open_channel,
LOCAL, REMOTE, make_htlc_output_witness_script, UnknownPaymentHash,
@@ -49,11 +48,12 @@ def maybe_create_sweeptx_for_their_ctx_to_local(ctx: Transaction, revocation_pri
witness_script=witness_script,
privkey=revocation_privkey,
is_revocation=True)
if sweep_tx is None: return None
return sweep_tx
def create_sweeptxs_for_their_just_revoked_ctx(chan: 'Channel', ctx: Transaction, per_commitment_secret: bytes,
sweep_address: str) -> Dict[str,EncumberedTransaction]:
sweep_address: str) -> Dict[str,Transaction]:
"""Presign sweeping transactions using the just received revoked pcs.
These will only be utilised if the remote breaches.
Sweep 'lo_local', and all the HTLCs (two cases: directly from ctx, or from HTLC tx).
@@ -73,7 +73,7 @@ def create_sweeptxs_for_their_just_revoked_ctx(chan: 'Channel', ctx: Transaction
delayed_pubkey=this_delayed_pubkey,
sweep_address=sweep_address)
if sweep_tx:
txs[ctx.txid()] = EncumberedTransaction('their_ctx_to_local', sweep_tx, csv_delay=0, cltv_expiry=0)
txs[ctx.txid()] = sweep_tx
# HTLCs
def create_sweeptx_for_htlc(htlc: 'UpdateAddHtlc', is_received_htlc: bool) -> Tuple[Optional[Transaction],
Optional[Transaction],
@@ -96,6 +96,8 @@ def create_sweeptxs_for_their_just_revoked_ctx(chan: 'Channel', ctx: Transaction
is_revocation=True)
# sweep from htlc tx
secondstage_sweep_tx = create_sweeptx_that_spends_htlctx_that_spends_htlc_in_ctx(
'their_htlctx_',
to_self_delay=0,
htlc_tx=htlc_tx,
htlctx_witness_script=htlc_tx_witness_script,
sweep_address=sweep_address,
@@ -109,22 +111,22 @@ def create_sweeptxs_for_their_just_revoked_ctx(chan: 'Channel', ctx: Transaction
for htlc in received_htlcs:
direct_sweep_tx, secondstage_sweep_tx, htlc_tx = create_sweeptx_for_htlc(htlc, is_received_htlc=True)
if direct_sweep_tx:
txs[ctx.txid()] = EncumberedTransaction(f'their_ctx_sweep_htlc_{bh2u(htlc.payment_hash)}', direct_sweep_tx, csv_delay=0, cltv_expiry=0)
txs[ctx.txid()] = direct_sweep_tx
if secondstage_sweep_tx:
txs[htlc_tx.txid()] = EncumberedTransaction(f'their_htlctx_{bh2u(htlc.payment_hash)}', secondstage_sweep_tx, csv_delay=0, cltv_expiry=0)
txs[htlc_tx.txid()] = secondstage_sweep_tx
# offered HTLCs, in their ctx
offered_htlcs = chan.included_htlcs(REMOTE, REMOTE, False)
for htlc in offered_htlcs:
direct_sweep_tx, secondstage_sweep_tx, htlc_tx = create_sweeptx_for_htlc(htlc, is_received_htlc=False)
if direct_sweep_tx:
txs[ctx.txid()] = EncumberedTransaction(f'their_ctx_sweep_htlc_{bh2u(htlc.payment_hash)}', direct_sweep_tx, csv_delay=0, cltv_expiry=0)
txs[ctx.txid()] = direct_sweep_tx
if secondstage_sweep_tx:
txs[htlc_tx.txid()] = EncumberedTransaction(f'their_htlctx_{bh2u(htlc.payment_hash)}', secondstage_sweep_tx, csv_delay=0, cltv_expiry=0)
txs[htlc_tx.txid()] = secondstage_sweep_tx
return txs
def create_sweeptxs_for_our_latest_ctx(chan: 'Channel', ctx: Transaction,
sweep_address: str) -> Dict[str,EncumberedTransaction]:
sweep_address: str) -> Dict[str,Transaction]:
"""Handle the case where we force close unilaterally with our latest ctx.
Construct sweep txns for 'to_local', and for all HTLCs (2 txns each).
'to_local' can be swept even if this is a breach (by us),
@@ -151,7 +153,7 @@ def create_sweeptxs_for_our_latest_ctx(chan: 'Channel', ctx: Transaction,
remote_revocation_pubkey=other_revocation_pubkey,
to_self_delay=to_self_delay)
if sweep_tx:
txs[sweep_tx.prevout(0)] = EncumberedTransaction('our_ctx_to_local', sweep_tx, csv_delay=to_self_delay, cltv_expiry=0)
txs[sweep_tx.prevout(0)] = sweep_tx
# HTLCs
def create_txns_for_htlc(htlc: 'UpdateAddHtlc', is_received_htlc: bool) -> Tuple[Optional[Transaction], Optional[Transaction]]:
if is_received_htlc:
@@ -171,6 +173,7 @@ def create_sweeptxs_for_our_latest_ctx(chan: 'Channel', ctx: Transaction,
preimage=preimage,
is_received_htlc=is_received_htlc)
to_wallet_tx = create_sweeptx_that_spends_htlctx_that_spends_htlc_in_ctx(
'our_ctx_htlc_tx_',
to_self_delay=to_self_delay,
htlc_tx=htlc_tx,
htlctx_witness_script=htlctx_witness_script,
@@ -184,21 +187,21 @@ def create_sweeptxs_for_our_latest_ctx(chan: 'Channel', ctx: Transaction,
for htlc in offered_htlcs:
htlc_tx, to_wallet_tx = create_txns_for_htlc(htlc, is_received_htlc=False)
if htlc_tx and to_wallet_tx:
txs[to_wallet_tx.prevout(0)] = EncumberedTransaction(f'second_stage_to_wallet_{bh2u(htlc.payment_hash)}', to_wallet_tx, csv_delay=to_self_delay, cltv_expiry=0)
txs[htlc_tx.prevout(0)] = EncumberedTransaction(f'our_ctx_htlc_tx_{bh2u(htlc.payment_hash)}', htlc_tx, csv_delay=0, cltv_expiry=htlc.cltv_expiry)
txs[to_wallet_tx.prevout(0)] = to_wallet_tx
txs[htlc_tx.prevout(0)] = htlc_tx
# received HTLCs, in our ctx --> "success"
# TODO consider carefully if "included_htlcs" is what we need here
received_htlcs = list(chan.included_htlcs(LOCAL, REMOTE)) # type: List[UpdateAddHtlc]
for htlc in received_htlcs:
htlc_tx, to_wallet_tx = create_txns_for_htlc(htlc, is_received_htlc=True)
if htlc_tx and to_wallet_tx:
txs[to_wallet_tx.prevout(0)] = EncumberedTransaction(f'second_stage_to_wallet_{bh2u(htlc.payment_hash)}', to_wallet_tx, csv_delay=to_self_delay, cltv_expiry=0)
txs[htlc_tx.prevout(0)] = EncumberedTransaction(f'our_ctx_htlc_tx_{bh2u(htlc.payment_hash)}', htlc_tx, csv_delay=0, cltv_expiry=0)
txs[to_wallet_tx.prevout(0)] = to_wallet_tx
txs[htlc_tx.prevout(0)] = htlc_tx
return txs
def create_sweeptxs_for_their_latest_ctx(chan: 'Channel', ctx: Transaction,
sweep_address: str) -> Dict[str,EncumberedTransaction]:
sweep_address: str) -> Dict[str,Transaction]:
"""Handle the case when the remote force-closes with their ctx.
Regardless of it is a breach or not, construct sweep tx for 'to_remote'.
If it is a breach, also construct sweep tx for 'to_local'.
@@ -244,13 +247,13 @@ def create_sweeptxs_for_their_latest_ctx(chan: 'Channel', ctx: Transaction,
delayed_pubkey=this_delayed_pubkey,
sweep_address=sweep_address)
if sweep_tx:
txs[sweep_tx.prevout(0)] = EncumberedTransaction('their_ctx_to_local', sweep_tx, csv_delay=0, cltv_expiry=0)
txs[sweep_tx.prevout(0)] = sweep_tx
# to_remote
sweep_tx = maybe_create_sweeptx_for_their_ctx_to_remote(ctx=ctx,
sweep_address=sweep_address,
our_payment_privkey=other_payment_privkey)
if sweep_tx:
txs[sweep_tx.prevout(0)] = EncumberedTransaction('their_ctx_to_remote', sweep_tx, csv_delay=0, cltv_expiry=0)
txs[sweep_tx.prevout(0)] = sweep_tx
# HTLCs
# from their ctx, we can only redeem HTLCs if the ctx was not revoked,
# as old HTLCs are not stored. (if it was revoked, then we should have presigned txns
@@ -279,20 +282,21 @@ def create_sweeptxs_for_their_latest_ctx(chan: 'Channel', ctx: Transaction,
htlc_output_witness_script=htlc_output_witness_script,
privkey=other_htlc_privkey.get_secret_bytes(),
preimage=preimage,
is_revocation=False)
is_revocation=False,
cltv_expiry=htlc.cltv_expiry if is_received_htlc else 0)
return sweep_tx
# received HTLCs, in their ctx --> "timeout"
received_htlcs = chan.included_htlcs_in_their_latest_ctxs(LOCAL)[ctn] # type: List[UpdateAddHtlc]
for htlc in received_htlcs:
sweep_tx = create_sweeptx_for_htlc(htlc, is_received_htlc=True)
if sweep_tx:
txs[sweep_tx.prevout(0)] = EncumberedTransaction(f'their_ctx_sweep_htlc_{bh2u(htlc.payment_hash)}', sweep_tx, csv_delay=0, cltv_expiry=htlc.cltv_expiry)
txs[sweep_tx.prevout(0)] = sweep_tx
# offered HTLCs, in their ctx --> "success"
offered_htlcs = chan.included_htlcs_in_their_latest_ctxs(REMOTE)[ctn] # type: List[UpdateAddHtlc]
for htlc in offered_htlcs:
sweep_tx = create_sweeptx_for_htlc(htlc, is_received_htlc=False)
if sweep_tx:
txs[sweep_tx.prevout(0)] = EncumberedTransaction(f'their_ctx_sweep_htlc_{bh2u(htlc.payment_hash)}', sweep_tx, csv_delay=0, cltv_expiry=0)
txs[sweep_tx.prevout(0)] = sweep_tx
return txs
@@ -327,7 +331,9 @@ def create_htlctx_that_spends_from_our_ctx(chan: 'Channel', our_pcp: bytes,
for_us=True,
we_receive=is_received_htlc,
commit=ctx,
htlc=htlc)
htlc=htlc,
name=f'our_ctx_htlc_tx_{bh2u(htlc.payment_hash)}',
cltv_expiry=0 if is_received_htlc else htlc.cltv_expiry)
remote_htlc_sig = chan.get_remote_htlc_sig_for_htlc(htlc, we_receive=is_received_htlc)
local_htlc_sig = bfh(htlc_tx.sign_txin(0, local_htlc_privkey))
txin = htlc_tx.inputs()[0]
@@ -339,7 +345,7 @@ def create_htlctx_that_spends_from_our_ctx(chan: 'Channel', our_pcp: bytes,
def maybe_create_sweeptx_for_their_ctx_htlc(ctx: Transaction, sweep_address: str,
htlc_output_witness_script: bytes,
privkey: bytes, is_revocation: bool,
preimage: Optional[bytes]) -> Optional[Transaction]:
preimage: Optional[bytes], cltv_expiry: int = 0) -> Optional[Transaction]:
htlc_address = redeem_script_to_address('p2wsh', bh2u(htlc_output_witness_script))
# FIXME handle htlc_address collision
# also: https://github.com/lightningnetwork/lightning-rfc/issues/448
@@ -351,13 +357,14 @@ def maybe_create_sweeptx_for_their_ctx_htlc(ctx: Transaction, sweep_address: str
preimage=preimage,
output_idx=output_idx,
privkey=privkey,
is_revocation=is_revocation)
is_revocation=is_revocation,
cltv_expiry=cltv_expiry)
return sweep_tx
def create_sweeptx_their_ctx_htlc(ctx: Transaction, witness_script: bytes, sweep_address: str,
preimage: Optional[bytes], output_idx: int,
privkey: bytes, is_revocation: bool,
privkey: bytes, is_revocation: bool, cltv_expiry: int,
fee_per_kb: int=None) -> Optional[Transaction]:
preimage = preimage or b'' # preimage is required iff (not is_revocation and htlc is offered)
val = ctx.outputs()[output_idx].value
@@ -378,7 +385,7 @@ def create_sweeptx_their_ctx_htlc(ctx: Transaction, witness_script: bytes, sweep
outvalue = val - fee
if outvalue <= dust_threshold(): return None
sweep_outputs = [TxOutput(TYPE_ADDRESS, sweep_address, outvalue)]
tx = Transaction.from_io(sweep_inputs, sweep_outputs, version=2)
tx = Transaction.from_io(sweep_inputs, sweep_outputs, version=2, name=f'their_ctx_sweep_htlc_{bh2u(htlc.payment_hash)}', cltv_expiry=cltv_expiry)
sig = bfh(tx.sign_txin(0, privkey))
if not is_revocation:
@@ -412,7 +419,7 @@ def create_sweeptx_their_ctx_to_remote(sweep_address: str, ctx: Transaction, out
outvalue = val - fee
if outvalue <= dust_threshold(): return None
sweep_outputs = [TxOutput(TYPE_ADDRESS, sweep_address, outvalue)]
sweep_tx = Transaction.from_io(sweep_inputs, sweep_outputs)
sweep_tx = Transaction.from_io(sweep_inputs, sweep_outputs, name='their_ctx_to_remote')
sweep_tx.set_rbf(True)
sweep_tx.sign({our_payment_pubkey: (our_payment_privkey.get_secret_bytes(), True)})
if not sweep_tx.is_complete():
@@ -451,7 +458,10 @@ def create_sweeptx_ctx_to_local(sweep_address: str, ctx: Transaction, output_idx
outvalue = val - fee
if outvalue <= dust_threshold(): return None
sweep_outputs = [TxOutput(TYPE_ADDRESS, sweep_address, outvalue)]
sweep_tx = Transaction.from_io(sweep_inputs, sweep_outputs, version=2)
if is_revocation:
sweep_tx = Transaction.from_io(sweep_inputs, sweep_outputs, version=2, name='their_ctx_to_local')
else:
sweep_tx = Transaction.from_io(sweep_inputs, sweep_outputs, version=2, name='our_ctx_to_local', csv_delay=to_self_delay)
sig = sweep_tx.sign_txin(0, privkey)
witness = construct_witness([sig, int(is_revocation), witness_script])
sweep_tx.inputs()[0]['witness'] = witness
@@ -459,8 +469,9 @@ def create_sweeptx_ctx_to_local(sweep_address: str, ctx: Transaction, output_idx
def create_sweeptx_that_spends_htlctx_that_spends_htlc_in_ctx(
name_prefix: str,
htlc_tx: Transaction, htlctx_witness_script: bytes, sweep_address: str,
privkey: bytes, is_revocation: bool, to_self_delay: int=None,
privkey: bytes, is_revocation: bool, to_self_delay: int,
fee_per_kb: int=None) -> Optional[Transaction]:
val = htlc_tx.outputs()[0].value
sweep_inputs = [{
@@ -483,7 +494,7 @@ def create_sweeptx_that_spends_htlctx_that_spends_htlc_in_ctx(
outvalue = val - fee
if outvalue <= dust_threshold(): return None
sweep_outputs = [TxOutput(TYPE_ADDRESS, sweep_address, outvalue)]
tx = Transaction.from_io(sweep_inputs, sweep_outputs, version=2)
tx = Transaction.from_io(sweep_inputs, sweep_outputs, version=2, name=name_prefix + htlc_tx.txid(), csv_delay=to_self_delay)
sig = bfh(tx.sign_txin(0, privkey))
witness = construct_witness([sig, int(is_revocation), htlctx_witness_script])

31
electrum/lnutil.py
View File

@@ -269,10 +269,10 @@ def make_htlc_tx_inputs(htlc_output_txid: str, htlc_output_index: int,
}]
return c_inputs
def make_htlc_tx(cltv_timeout, inputs, output):
def make_htlc_tx(cltv_timeout, inputs, output, name, cltv_expiry):
assert type(cltv_timeout) is int
c_outputs = [output]
tx = Transaction.from_io(inputs, c_outputs, locktime=cltv_timeout, version=2)
tx = Transaction.from_io(inputs, c_outputs, locktime=cltv_timeout, version=2, name=name, cltv_expiry=cltv_expiry)
return tx
def make_offered_htlc(revocation_pubkey: bytes, remote_htlcpubkey: bytes,
@@ -336,7 +336,7 @@ def get_ordered_channel_configs(chan: 'Channel', for_us: bool) -> Tuple[Union[Lo
def make_htlc_tx_with_open_channel(chan: 'Channel', pcp: bytes, for_us: bool,
we_receive: bool, commit: Transaction,
htlc: 'UpdateAddHtlc') -> Tuple[bytes, Transaction]:
htlc: 'UpdateAddHtlc', name: str = None, cltv_expiry: int = 0) -> Tuple[bytes, Transaction]:
amount_msat, cltv_expiry, payment_hash = htlc.amount_msat, htlc.cltv_expiry, htlc.payment_hash
conf, other_conf = get_ordered_channel_configs(chan=chan, for_us=for_us)
@@ -371,7 +371,8 @@ def make_htlc_tx_with_open_channel(chan: 'Channel', pcp: bytes, for_us: bool,
witness_script=bh2u(preimage_script))
if is_htlc_success:
cltv_expiry = 0
htlc_tx = make_htlc_tx(cltv_expiry, inputs=htlc_tx_inputs, output=htlc_tx_output)
htlc_tx = make_htlc_tx(cltv_expiry, inputs=htlc_tx_inputs, output=htlc_tx_output,
name=name, cltv_expiry=cltv_expiry)
return script, htlc_tx
def make_funding_input(local_funding_pubkey: bytes, remote_funding_pubkey: bytes,
@@ -639,28 +640,6 @@ def generate_keypair(ln_keystore: BIP32_KeyStore, key_family: LnKeyFamily, index
return Keypair(*ln_keystore.get_keypair([key_family, 0, index], None))
class EncumberedTransaction(NamedTuple("EncumberedTransaction", [('name', str),
('tx', Transaction),
('csv_delay', int),
('cltv_expiry', int),])):
def to_json(self) -> dict:
return {
'name': self.name,
'tx': str(self.tx),
'csv_delay': self.csv_delay,
'cltv_expiry': self.cltv_expiry,
}
@classmethod
def from_json(cls, d: dict):
d2 = dict(d)
d2['tx'] = Transaction(d['tx'])
return EncumberedTransaction(**d2)
def __str__(self):
return super().__str__()[:-1] + ", txid: " + self.tx.txid() + ")"
NUM_MAX_HOPS_IN_PAYMENT_PATH = 20
NUM_MAX_EDGES_IN_PAYMENT_PATH = NUM_MAX_HOPS_IN_PAYMENT_PATH + 1

14
electrum/lnwatcher.py
View File

@@ -13,10 +13,10 @@ from typing import NamedTuple, Dict
import jsonrpclib
from .util import PrintError, bh2u, bfh, log_exceptions, ignore_exceptions
from .lnutil import EncumberedTransaction
from . import wallet
from .storage import WalletStorage
from .address_synchronizer import AddressSynchronizer, TX_HEIGHT_LOCAL, TX_HEIGHT_UNCONF_PARENT, TX_HEIGHT_UNCONFIRMED
from .transaction import Transaction
if TYPE_CHECKING:
from .network import Network
@@ -46,14 +46,14 @@ class LNWatcher(AddressSynchronizer):
self.start_network(network)
self.lock = threading.RLock()
self.channel_info = storage.get('channel_info', {}) # access with 'lock'
# [funding_outpoint_str][prev_txid] -> set of EncumberedTransaction
# [funding_outpoint_str][prev_txid] -> set of Transaction
# prev_txid is the txid of a tx that is watched for confirmations
# access with 'lock'
self.sweepstore = defaultdict(lambda: defaultdict(set))
for funding_outpoint, ctxs in storage.get('sweepstore', {}).items():
for txid, set_of_txns in ctxs.items():
for e_tx in set_of_txns:
e_tx2 = EncumberedTransaction.from_json(e_tx)
e_tx2 = Transaction.from_dict(e_tx)
self.sweepstore[funding_outpoint][txid].add(e_tx2)
self.network.register_callback(self.on_network_update,
@@ -100,7 +100,7 @@ class LNWatcher(AddressSynchronizer):
for funding_outpoint, ctxs in self.sweepstore.items():
sweepstore[funding_outpoint] = {}
for prev_txid, set_of_txns in ctxs.items():
sweepstore[funding_outpoint][prev_txid] = [e_tx.to_json() for e_tx in set_of_txns]
sweepstore[funding_outpoint][prev_txid] = [e_tx.as_dict() for e_tx in set_of_txns]
storage.put('sweepstore', sweepstore)
storage.write()
@@ -184,11 +184,11 @@ class LNWatcher(AddressSynchronizer):
self.print_error(e_tx.name, f'could not publish encumbered tx: {str(e_tx)}, prev_txid: {prev_txid}')
async def broadcast_or_log(self, funding_outpoint, e_tx):
height = self.get_tx_height(e_tx.tx.txid()).height
height = self.get_tx_height(e_tx.txid()).height
if height != TX_HEIGHT_LOCAL:
return
try:
txid = await self.network.broadcast_transaction(e_tx.tx)
txid = await self.network.broadcast_transaction(e_tx)
except Exception as e:
self.print_error(f'broadcast: {e_tx.name}: failure: {repr(e)}')
else:
@@ -199,7 +199,7 @@ class LNWatcher(AddressSynchronizer):
@with_watchtower
def add_sweep_tx(self, funding_outpoint: str, prev_txid: str, sweeptx):
encumbered_sweeptx = EncumberedTransaction.from_json(sweeptx)
encumbered_sweeptx = Transaction.from_dict(sweeptx)
with self.lock:
self.sweepstore[funding_outpoint][prev_txid].add(encumbered_sweeptx)
self.write_to_disk()

4
electrum/tests/test_lnutil.py
View File

@@ -556,7 +556,9 @@ class TestLNUtil(unittest.TestCase):
witness_script=bh2u(htlc))
our_htlc_tx = make_htlc_tx(cltv_timeout,
inputs=our_htlc_tx_inputs,
output=our_htlc_tx_output)
output=our_htlc_tx_output,
name='test',
cltv_expiry=0)
local_sig = our_htlc_tx.sign_txin(0, local_privkey[:-1])

4
electrum/tests/test_transaction.py
View File

@@ -86,7 +86,7 @@ class TestTransaction(SequentialTestCase):
self.assertEqual(tx.deserialize(), expected)
self.assertEqual(tx.deserialize(), None)
self.assertEqual(tx.as_dict(), {'hex': unsigned_blob, 'complete': False, 'final': True})
self.assertEqual(tx.as_dict(), {'hex': unsigned_blob, 'complete': False, 'final': True, 'csv_delay': 0, 'cltv_expiry': 0, 'name': None})
self.assertEqual(tx.get_outputs_for_UI(), [TxOutputForUI('14CHYaaByjJZpx4oHBpfDMdqhTyXnZ3kVs', 1000000)])
self.assertTrue(tx.has_address('14CHYaaByjJZpx4oHBpfDMdqhTyXnZ3kVs'))
@@ -127,7 +127,7 @@ class TestTransaction(SequentialTestCase):
tx = transaction.Transaction(signed_blob)
self.assertEqual(tx.deserialize(), expected)
self.assertEqual(tx.deserialize(), None)
self.assertEqual(tx.as_dict(), {'hex': signed_blob, 'complete': True, 'final': True})
self.assertEqual(tx.as_dict(), {'hex': signed_blob, 'complete': True, 'final': True, 'csv_delay': 0, 'cltv_expiry': 0, 'name': None})
self.assertEqual(tx.serialize(), signed_blob)

20
electrum/transaction.py
View File

@@ -605,6 +605,9 @@ class Transaction:
self._outputs = None # type: List[TxOutput]
self.locktime = 0
self.version = 2
self.name = None
self.csv_delay = 0
self.cltv_expiry = 0
# by default we assume this is a partial txn;
# this value will get properly set when deserializing
self.is_partial_originally = True
@@ -715,13 +718,16 @@ class Transaction:
return d
@classmethod
def from_io(klass, inputs, outputs, locktime=0, version=None):
def from_io(klass, inputs, outputs, locktime=0, version=None, name=None, csv_delay=0, cltv_expiry=0):
self = klass(None)
self._inputs = inputs
self._outputs = outputs
self.locktime = locktime
if version is not None:
self.version = version
self.name = name
self.csv_delay = csv_delay
self.cltv_expiry = cltv_expiry
self.BIP69_sort()
return self
@@ -1223,9 +1229,21 @@ class Transaction:
'hex': self.raw,
'complete': self.is_complete(),
'final': self.is_final(),
'name': self.name,
'csv_delay': self.csv_delay,
'cltv_expiry': self.cltv_expiry,
}
return out
@classmethod
def from_dict(cls, d):
tx = cls(d['hex'])
tx.deserialize(True)
tx.name = d.get('name')
tx.csv_delay = d.get('csv_delay', 0)
tx.cltv_expiry = d.get('cltv_expiry', 0)
return tx
def tx_from_str(txt: str) -> str:
"""Sanitizes tx-describing input (json or raw hex or base43) into