#!/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 mmgen.Opts import * from mmgen.license import * from mmgen.config import * from mmgen.tx import * from mmgen.utils import msg help_data = { 'prog_name': sys.argv[0].split("/")[-1], 'desc': "Sign a Bitcoin transaction generated by mmgen-txcreate", 'usage': "[opts] [mmgen wallet/seed/words/brain 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 -i, --info Display information about the transaction and exit -I, --tx_id Display transaction ID and exit -k, --keys-from-file k Provide additional key data from file 'k' -P, --passwd-file f Get passphrase from file 'f' -q, --quiet Suppress warnings; overwrite files without prompting -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 -w, --use-wallet-dat Use the keys in the bitcoind wallet.dat file too Transactions with either mmgen or non-mmgen input addresses may be signed. For non-mmgen inputs, the bitcoind wallet.dat is used as the key source. For mmgen inputs, key data is generated from your seed as with the mmgen-addrgen and mmgen-keygen utilities. 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. In cases of transactions with mixed mmgen and non-mmgen inputs, non-mmgen keys must be supplied in a separate file (WIF format, one key per line) using the '--keys-from-file' option. Alternatively, one may import the required mmgen keys into the bitcoind wallet.dat and use the '--force-wallet-dat' option. Seed data supplied in files must have the following extensions: wallet: '.{}' seed: '.{}' mnemonic: '.{}' brainwallet: '.{}' """.format(seed_ext,wallet_ext,seed_ext,mn_ext,brain_ext) } short_opts = "hd:eiIk:P:qb:msw" long_opts = "help","outdir=","echo_passphrase","info","tx_id",\ "keys_from_file=","passwd_file=","quiet","from_brain=",\ "from_mnemonic","from_seed","use_wallet_dat" opts,infiles = process_opts(sys.argv,help_data,short_opts,long_opts) check_opts(opts,long_opts) if not infiles: usage(help_data) for i in infiles: check_infile(i) # Begin execution c = connect_to_bitcoind() tx_file = infiles.pop(0) m = "" if 'tx_id' in opts else "transaction data" tx_data = get_lines_from_file(tx_file,m) metadata,tx_hex,sig_data,inputs_data = parse_tx_data(tx_data,tx_file) if 'tx_id' in opts: msg(metadata[0]) sys.exit(0) if 'info' in opts: view_tx_data(c,inputs_data,tx_hex,metadata) sys.exit(0) if not 'quiet' in opts: do_license_msg(immed=True) msg("Successfully opened transaction file '%s'" % tx_file) prompt = "View transaction data? (y)es, (N)o, (v)iew in pager" reply = prompt_and_get_char(prompt,"YyNnVv",enter_ok=True) if reply and reply in "YyVv": p = True if reply in "Vv" else False view_tx_data(c,inputs_data,tx_hex,metadata,pager=p) # Are inputs mmgen addresses? mmgen_addrs = [i for i in inputs_data if verify_mmgen_label(i['account'])] other_addrs = [i for i in inputs_data if not verify_mmgen_label(i['account'])] keys = get_lines_from_file(opts['keys_from_file'],"key data") \ if 'keys_from_file' in opts else [] if mmgen_addrs: if other_addrs and not keys and not 'use_wallet_dat' in opts: missing_keys_errormsg(other_addrs) sys.exit(2) keys += get_keys_for_mmgen_addrs(mmgen_addrs,infiles,opts) if 'use_wallet_dat' in opts: sig_tx = sign_tx_with_bitcoind_wallet(c,tx_hex,sig_data,keys,opts) else: sig_tx = sign_transaction(c,tx_hex,sig_data,keys) elif other_addrs: if 'use_wallet_dat' in opts: sig_tx = sign_tx_with_bitcoind_wallet(c,tx_hex,sig_data,keys,opts) else: if keys: sig_tx = sign_transaction(c,tx_hex,sig_data,keys) else: missing_keys_errormsg(other_addrs) sys.exit(2) if sig_tx['complete']: msg("Signing completed") prompt = "Save signed transaction?" if user_confirm(prompt,default_yes=True): print_signed_tx_to_file(tx_hex,sig_tx['hex'],metadata,opts) else: msg("Some keys were missing. Transaction could not be signed.") sys.exit(3)