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#!/usr/bin/env python3
from pyln.client import Plugin
from hashlib import sha256
from binascii import hexlify
"""A simple plugin that accepts invoices with "BB"*32 preimages
"""
plugin = Plugin()
@plugin.hook('htlc_accepted')
def on_htlc_accepted(htlc, plugin, **kwargs):
preimage = b"\xBB" * 32
payment_hash = sha256(preimage).hexdigest()
preimage = hexlify(preimage).decode('ASCII')
print("htlc_accepted called for payment_hash {}".format(htlc['payment_hash']))
if htlc['payment_hash'] == payment_hash:
return {'result': 'resolve', 'payment_key': preimage}
else:
return {'result': 'continue'}
plugin.run()