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60 lines
1.7 KiB
60 lines
1.7 KiB
# -*- coding: utf-8 -*-
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# Copyright (c) 2020-2022 tecnovert
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# Distributed under the MIT software license, see the accompanying
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# file LICENSE or http://www.opensource.org/licenses/mit-license.php.
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from basicswap.util import (
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SerialiseNum,
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)
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from basicswap.script import (
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OpCodes,
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)
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INITIATE_TX_TIMEOUT = 40 * 60 # TODO: make variable per coin
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def buildContractScript(lock_val, secret_hash, pkh_redeem, pkh_refund, op_lock=OpCodes.OP_CHECKSEQUENCEVERIFY):
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script = bytearray([
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OpCodes.OP_IF,
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OpCodes.OP_SIZE,
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0x01, 0x20, # 32
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OpCodes.OP_EQUALVERIFY,
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OpCodes.OP_SHA256,
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0x20]) \
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+ secret_hash \
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+ bytearray([
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OpCodes.OP_EQUALVERIFY,
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OpCodes.OP_DUP,
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OpCodes.OP_HASH160,
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0x14]) \
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+ pkh_redeem \
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+ bytearray([OpCodes.OP_ELSE, ]) \
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+ SerialiseNum(lock_val) \
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+ bytearray([
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op_lock,
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OpCodes.OP_DROP,
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OpCodes.OP_DUP,
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OpCodes.OP_HASH160,
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0x14]) \
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+ pkh_refund \
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+ bytearray([
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OpCodes.OP_ENDIF,
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OpCodes.OP_EQUALVERIFY,
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OpCodes.OP_CHECKSIG])
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return script
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def extractScriptSecretHash(script):
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return script[7:39]
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def redeemITx(self, bid_id, session):
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bid, offer = self.getBidAndOffer(bid_id, session)
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ci_from = self.ci(offer.coin_from)
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txn = self.createRedeemTxn(ci_from.coin_type(), bid, for_txn_type='initiate')
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txid = ci_from.publishTx(bytes.fromhex(txn))
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bid.initiate_tx.spend_txid = bytes.fromhex(txid)
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self.log.debug('Submitted initiate redeem txn %s to %s chain for bid %s', txid, ci_from.coin_name(), bid_id.hex())
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