You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
40 lines
1.3 KiB
40 lines
1.3 KiB
#!/usr/bin/env python3
|
|
"""Plugin that replaces HTLC payloads.
|
|
|
|
This feature is important if we want to accept an HTLC tlv field not
|
|
accepted by lightningd.
|
|
"""
|
|
from pyln.client import Plugin
|
|
|
|
plugin = Plugin()
|
|
|
|
|
|
@plugin.hook("htlc_accepted")
|
|
def on_htlc_accepted(htlc, onion, plugin, **kwargs):
|
|
# eg. '2902017b04016d0821fff5b6bd5018c8731aa0496c3698ef49f132ef9a3000c94436f4957e79a2f8827b'
|
|
# (but values change depending on pay's randomness!)
|
|
print("payload was:{}".format(onion['payload']))
|
|
assert onion['payload'][0:2] == '29'
|
|
|
|
if plugin.replace_payload == 'corrupt_secret':
|
|
# Note: we don't include length prefix in returned payload, since it doesn't
|
|
# support the pre-TLV legacy form.
|
|
if onion['payload'][18] == '0':
|
|
newpayload = onion['payload'][2:18] + '1' + onion['payload'][19:]
|
|
else:
|
|
newpayload = onion['payload'][2:18] + '0' + onion['payload'][19:]
|
|
else:
|
|
newpayload = plugin.replace_payload
|
|
print("payload was:{}".format(onion['payload']))
|
|
print("payload now:{}".format(newpayload))
|
|
|
|
return {'result': 'continue', 'payload': newpayload}
|
|
|
|
|
|
@plugin.method('setpayload')
|
|
def setpayload(plugin, payload: bytes):
|
|
plugin.replace_payload = payload
|
|
return {}
|
|
|
|
|
|
plugin.run()
|
|
|