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contrib: fix signet miner (sighash mismatch)

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PSBT signing was changed to use SIGHASH_DEFAULT by default in #22514.
The signet miner script sets the sighash type of the created PSBT to
SIGHASH_ALL, hence this leads to a sighash mismatch when the
`walletprocesspsbt` RPC is called. Fix this by explicitly passing the
correct sighash type.

Note that the same change was needed in one of our functional tests,
see commit d3992669df826899a3de78a77a366dab46028026.

Reported by gruve-p.
This commit is contained in:
Sebastian Falbesoner 2022-03-13 21:44:28 +01:00
parent e04720ec33
commit 12cc0201c2
1 changed files with 4 additions and 3 deletions
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7
contrib/signet/miner
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@ -8,7 +8,7 @@ import base64
import json
import logging
import math
import os.path
import os
import re
import struct
import sys
@ -493,10 +493,11 @@ def do_generate(args):
logging.debug("Mining block delta=%s start=%s mine=%s", seconds_to_hms(mine_time-bestheader["time"]), mine_time, is_mine)
mined_blocks += 1
psbt = generate_psbt(tmpl, reward_spk, blocktime=mine_time)
psbt_signed = json.loads(args.bcli("-stdin", "walletprocesspsbt", input=psbt.encode('utf8')))
input_stream = os.linesep.join([psbt, "true", "ALL"]).encode('utf8')
psbt_signed = json.loads(args.bcli("-stdin", "walletprocesspsbt", input=input_stream))
if not psbt_signed.get("complete",False):
logging.debug("Generated PSBT: %s" % (psbt,))
sys.stderr.write("PSBT signing failed")
sys.stderr.write("PSBT signing failed\n")
return 1
block, signet_solution = do_decode_psbt(psbt_signed["psbt"])
block = finish_block(block, signet_solution, args.grind_cmd)