#!/usr/bin/env python # # mmgen = Multi-Mode GENerator, command-line Bitcoin cold storage solution # Copyright (C) 2013 by philemon # # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program. If not, see . """ mmgen-txsign: Sign a Bitcoin transaction generated by mmgen-txcreate """ import sys #from hashlib import sha256 from mmgen.Opts import * from mmgen.license import * from mmgen.config import * from mmgen.tx import * from mmgen.utils import * help_data = { 'prog_name': sys.argv[0].split("/")[-1], 'desc': "Sign a Bitcoin transaction generated by mmgen-txcreate", 'usage': "[opts] [mmgen wallet/seed/mnemonic file]", 'options': """ -h, --help Print this help message -d, --outdir d Specify an alternate directory 'd' for output -e, --echo-passphrase Print passphrase to screen when typing it -f, --force-wallet-dat Force the use of wallet.dat as a key source -i, --info Display information about the transaction and exit -k, --keys-from-file k Provide additional key data from file 'k' -q, --quiet Suppress warnings; overwrite files without asking -b, --from-brain l,p Generate keys from a user-created password, i.e. a "brainwallet", using seed length 'l' and hash preset 'p' (comma-separated) -m, --from-mnemonic Generate keys from an electrum-like mnemonic -s, --from-seed Generate keys from a seed in .{} format Data for the --from- options will be taken from a file if a second file is specified on the command line. Otherwise, the user will be prompted to enter the data. """.format(seed_ext) } short_opts = "hd:efik:qb:ms" long_opts = "help","outdir=","echo_passphrase","force_wallet_dat","info",\ "keys_from_file=","quiet","from_brain=","from_mnemonic","from_seed" opts,cmd_args = process_opts(sys.argv,help_data,short_opts,long_opts) # Exits on invalid input check_opts(opts, ('outdir','from_brain')) if 'keys_from_file' in opts: check_infile(opts['keys_from_file']) if debug: print "Processed options: %s" % repr(opts) print "Cmd args: %s" % repr(cmd_args) if len(cmd_args) in (1,2): tx_file = cmd_args[0] check_infile(tx_file) else: usage(help_data) # Begin execution c = connect_to_bitcoind() tx_data = get_lines_from_file(tx_file,"transaction data") metadata,tx_hex,sig_data,inputs_data = parse_tx_data(tx_data,tx_file) # Are inputs mmgen addresses? infile,mmgen_addrs,other_addrs = "",[],[] # Check that all the seed IDs are the same: for i in inputs_data: if verify_mmgen_label(i['account']): mmgen_addrs.append(i) else: other_addrs.append(i) if mmgen_addrs: a_ids = list(set([i['account'][:8] for i in mmgen_addrs])) if len(a_ids) != 1: msg("Addresses come from different seeds! (%s)" % " ".join(a_ids)) sys.exit(3) if len(cmd_args) == 2: infile = cmd_args[1] else: if "from_brain" in opts \ or "from_mnemonic" in opts \ or "from_seed" in opts: infile = "" else: msg("Inputs contain mmgen addresses. An MMGen wallet file must be specified on the command line (or use the '-b', '-m' or '-s' options).".strip()) sys.exit(2) if other_addrs: if 'keys_from_file' in opts: add_keys = get_lines_from_file(opts['keys_from_file']) else: msg(""" A key file must be supplied (option '-f') for the following non-mmgen address%s: %s""" % ( "" if len(other_addrs) == 1 else "es", " ".join([i['address'] for i in other_addrs]) )) sys.exit(2) if 'info' in opts: view_tx_data(c,inputs_data,tx_hex,metadata) sys.exit(0) if not 'quiet' in opts and not 'info' in opts: do_license_msg() msg("Successfully opened transaction file '%s'" % tx_file) if user_confirm("View transaction data? ",default_yes=False): view_tx_data(c,inputs_data,tx_hex,metadata) if mmgen_addrs: seed = get_seed(infile,opts) seed_id = make_chksum_8(seed) if seed_id != a_ids[0]: msg("Seed ID of wallet (%s) doesn't match that of addresses (%s)" % (seed_id,a_ids[0])) sys.exit(3) addr_nums = [int(i['account'].split()[0][9:]) for i in mmgen_addrs] from mmgen.addr import generate_addrs o = {'no_addresses': True, 'gen_what': "keys"} keys = [i['wif'] for i in generate_addrs(seed, addr_nums, o)] if other_addrs: keys += add_keys try: sig_tx = c.signrawtransaction(tx_hex,sig_data,keys) except: msg("Failed to sign transaction") sys.exit(3) else: prompt = "Enter passphrase for bitcoind wallet: " if 'echo_passphrase' in opts: password = my_raw_input(prompt) else: password = my_getpass(prompt) wallet_enc = True from mmgen.rpc import exceptions try: c.walletpassphrase(password, 9999) except exceptions.WalletWrongEncState: msg("Wallet is unencrypted") wallet_enc = False except exceptions.WalletPassphraseIncorrect: msg("Passphrase incorrect") sys.exit(3) except exceptions.WalletAlreadyUnlocked: msg("WARNING: Wallet already unlocked!") else: msg("Passphrase OK") try: sig_tx = c.signrawtransaction(tx_hex,sig_data) except: msg("Failed to sign transaction") if wallet_enc: c.walletlock() msg("Locking wallet") sys.exit(3) if wallet_enc: c.walletlock() msg("Locking wallet") if sig_tx['complete']: msg("Signing completed") else: msg("Signing failed: 'complete=%s'" % sig_tx['complete']) sys.exit(3) prompt = "Save signed transaction?" if user_confirm(prompt,default_yes=True): print_signed_tx_to_file(tx_hex,sig_tx['hex'],metadata,opts)