1  #!/usr/bin/env python3
  2  # Copyright (c) 2018-2022 The Bitcoin Core developers
  3  # Distributed under the MIT software license, see the accompanying
  4  # file COPYING or http://www.opensource.org/licenses/mit-license.php.
  5  
  6  import os
  7  import sys
  8  import argparse
  9  import json
 10  
 11  def perform_pre_checks():
 12      mock_result_path = os.path.join(os.getcwd(), "mock_result")
 13      if os.path.isfile(mock_result_path):
 14          with open(mock_result_path, "r", encoding="utf8") as f:
 15              mock_result = f.read()
 16          if mock_result[0]:
 17              sys.stdout.write(mock_result[2:])
 18              sys.exit(int(mock_result[0]))
 19  
 20  def enumerate(args):
 21      sys.stdout.write(json.dumps([{"fingerprint": "00000001", "type": "trezor", "model": "trezor_t"}]))
 22  
 23  def getdescriptors(args):
 24      xpub = "tpubD6NzVbkrYhZ4WaWSyoBvQwbpLkojyoTZPRsgXELWz3Popb3qkjcJyJUGLnL4qHHoQvao8ESaAstxYSnhyswJ76uZPStJRJCTKvosUCJZL5B"
 25  
 26      sys.stdout.write(json.dumps({
 27          "receive": [
 28              "pkh([00000001/44h/1h/" + args.account + "']" + xpub + "/0/*)#aqllu46s",
 29              "sh(wpkh([00000001/49h/1h/" + args.account + "']" + xpub + "/0/*))#5dh56mgg",
 30              "wpkh([00000001/84h/1h/" + args.account + "']" + xpub + "/0/*)#h62dxaej",
 31              "tr([00000001/86h/1h/" + args.account + "']" + xpub + "/0/*)#pcd5w87f"
 32          ],
 33          "internal": [
 34              "pkh([00000001/44h/1h/" + args.account + "']" + xpub + "/1/*)#v567pq2g",
 35              "sh(wpkh([00000001/49h/1h/" + args.account + "']" + xpub + "/1/*))#pvezzyah",
 36              "wpkh([00000001/84h/1h/" + args.account + "']" + xpub + "/1/*)#xw0vmgf2",
 37              "tr([00000001/86h/1h/" + args.account + "']" + xpub + "/1/*)#svg4njw3"
 38  
 39          ]
 40      }))
 41  
 42  
 43  def displayaddress(args):
 44      if args.fingerprint != "00000001":
 45          return sys.stdout.write(json.dumps({"error": "Unexpected fingerprint", "fingerprint": args.fingerprint}))
 46  
 47      expected_desc = {
 48          "wpkh([00000001/84h/1h/0h/0/0]02c97dc3f4420402e01a113984311bf4a1b8de376cac0bdcfaf1b3ac81f13433c7)#3te6hhy7": "bcrt1qm90ugl4d48jv8n6e5t9ln6t9zlpm5th68x4f8g",
 49          "sh(wpkh([00000001/49h/1h/0h/0/0]02c97dc3f4420402e01a113984311bf4a1b8de376cac0bdcfaf1b3ac81f13433c7))#kz9y5w82": "2N2gQKzjUe47gM8p1JZxaAkTcoHPXV6YyVp",
 50          "pkh([00000001/44h/1h/0h/0/0]02c97dc3f4420402e01a113984311bf4a1b8de376cac0bdcfaf1b3ac81f13433c7)#q3pqd8wh": "n1LKejAadN6hg2FrBXoU1KrwX4uK16mco9",
 51          "tr([00000001/86h/1h/0h/0/0]c97dc3f4420402e01a113984311bf4a1b8de376cac0bdcfaf1b3ac81f13433c7)#puqqa90m": "tb1phw4cgpt6cd30kz9k4wkpwm872cdvhss29jga2xpmftelhqll62mscq0k4g",
 52          "wpkh([00000001/84h/1h/0h/0/1]03a20a46308be0b8ded6dff0a22b10b4245c587ccf23f3b4a303885be3a524f172)#aqpjv5xr": "wrong_address",
 53      }
 54      if args.desc not in expected_desc:
 55          return sys.stdout.write(json.dumps({"error": "Unexpected descriptor", "desc": args.desc}))
 56  
 57      return sys.stdout.write(json.dumps({"address": expected_desc[args.desc]}))
 58  
 59  def signtx(args):
 60      if args.fingerprint != "00000001":
 61          return sys.stdout.write(json.dumps({"error": "Unexpected fingerprint", "fingerprint": args.fingerprint}))
 62  
 63      with open(os.path.join(os.getcwd(), "mock_psbt"), "r", encoding="utf8") as f:
 64          mock_psbt = f.read()
 65  
 66      if args.fingerprint == "00000001" :
 67          sys.stdout.write(json.dumps({
 68              "psbt": mock_psbt,
 69              "complete": True
 70          }))
 71      else:
 72          sys.stdout.write(json.dumps({"psbt": args.psbt}))
 73  
 74  parser = argparse.ArgumentParser(prog='./signer.py', description='External signer mock')
 75  parser.add_argument('--fingerprint')
 76  parser.add_argument('--chain', default='main')
 77  parser.add_argument('--stdin', action='store_true')
 78  
 79  subparsers = parser.add_subparsers(description='Commands', dest='command')
 80  subparsers.required = True
 81  
 82  parser_enumerate = subparsers.add_parser('enumerate', help='list available signers')
 83  parser_enumerate.set_defaults(func=enumerate)
 84  
 85  parser_getdescriptors = subparsers.add_parser('getdescriptors')
 86  parser_getdescriptors.set_defaults(func=getdescriptors)
 87  parser_getdescriptors.add_argument('--account', metavar='account')
 88  
 89  parser_displayaddress = subparsers.add_parser('displayaddress', help='display address on signer')
 90  parser_displayaddress.add_argument('--desc', metavar='desc')
 91  parser_displayaddress.set_defaults(func=displayaddress)
 92  
 93  parser_signtx = subparsers.add_parser('signtx')
 94  parser_signtx.add_argument('psbt', metavar='psbt')
 95  
 96  parser_signtx.set_defaults(func=signtx)
 97  
 98  if not sys.stdin.isatty():
 99      buffer = sys.stdin.read()
100      if buffer and buffer.rstrip() != "":
101          sys.argv.extend(buffer.rstrip().split(" "))
102  
103  args = parser.parse_args()
104  
105  perform_pre_checks()
106  
107  args.func(args)