Host-customized fork of https://github.com/tecnovert/basicswap/
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61 lines
1.7 KiB
61 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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ABS_LOCK_BLOCKS_LEEWAY = 5 |
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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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