#!/usr/bin/env python # # mmgen = Multi-Mode GENerator, command-line Bitcoin cold storage solution # Copyright (C) 2013-2014 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 * import mmgen.config as g from mmgen.tx import * from mmgen.util import msg,qmsg help_data = { 'prog_name': sys.argv[0].split("/")[-1], 'desc': "Sign Bitcoin transactions generated by mmgen-txcreate", 'usage': "[opts] ,.. [mmgen wallet/seed/words/brainwallet 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 -V, --skip-key-preverify Skip optional key pre-verification step -b, --from-brain= l,p Generate keys from a user-created password, i.e. a "brainwallet", using seed length 'l' and hash preset 'p' -w, --use-wallet-dat Get keys from a running bitcoind -g, --from-incog Generate keys from an incognito wallet -X, --from-incog-hex Generate keys from an incognito hexadecimal wallet -G, --from-incog-hidden= f,o,l Generate keys from incognito data in file 'f' at offset 'o', with seed length of 'l' -m, --from-mnemonic Generate keys from an electrum-like mnemonic -s, --from-seed Generate keys from a seed in .{g.seed_ext} format """.format(g=g), 'notes': """ 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 get keys from a running bitcoind using the '--force-wallet-dat' option. First import the required mmgen keys using 'bitcoind importprivkey'. For transaction outputs that are MMGen addresses, MMGen-to-Bitcoin address mappings are verified. Therefore, seed material for these addresses must be supplied on the command line. Seed data supplied in files must have the following extensions: wallet: '.{g.wallet_ext}' seed: '.{g.seed_ext}' mnemonic: '.{g.mn_ext}' brainwallet: '.{g.brain_ext}' """.format(g=g) } opts,infiles = parse_opts(sys.argv,help_data) if "quiet" in opts: g.quiet = True if 'from_incog_hex' in opts or 'from_incog_hidden' in opts: opts['from_incog'] = True if not infiles: usage(help_data) for i in infiles: check_infile(i) c = connect_to_bitcoind() saved_seeds = {} tx_files = [i for i in set(infiles) if get_extension(i) == g.rawtx_ext] infiles = list(set(infiles) - set(tx_files)) if not "info" in opts: do_license_msg(immed=True) keys_from_file = get_lines_from_file(opts['keys_from_file'],"key data", remove_comments=True) if 'keys_from_file' in opts else [] for tx_file in tx_files: m = "" if 'tx_id' in opts else "transaction data" tx_data = get_lines_from_file(tx_file,m) metadata,tx_hex,inputs_data,b2m_map = parse_tx_data(tx_data,tx_file) qmsg("Successfully opened transaction file '%s'" % 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,b2m_map,metadata) sys.exit(0) # Are inputs mmgen addresses? mmgen_addrs = [i for i in inputs_data if parse_mmgen_label(i['account'])[0]] other_addrs = [i for i in inputs_data if not parse_mmgen_label(i['account'])[0]] keys = keys_from_file if other_addrs and not keys and not 'use_wallet_dat' in opts: missing_keys_errormsg(other_addrs) sys.exit(2) if other_addrs and keys and not 'skip_key_preverify' in opts: a = [i['address'] for i in other_addrs] preverify_keys(a, keys) opts['skip_key_preverify'] = True check_mmgen_to_btc_addr_mappings(inputs_data,b2m_map,infiles,saved_seeds,opts) if len(tx_files) > 1: msg("\nTransaction %s/%s:" % (tx_files.index(tx_file)+1,len(tx_files))) 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,b2m_map,metadata,pager=p) sig_data = [ {"txid":i['txid'],"vout":i['vout'],"scriptPubKey":i['scriptPubKey']} for i in inputs_data] if mmgen_addrs: ml = [i['account'].split()[0] for i in mmgen_addrs] keys += get_keys_for_mmgen_addrs(ml,infiles,saved_seeds,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 keys: sig_tx = sign_transaction(c,tx_hex,sig_data,keys) else: sig_tx = sign_tx_with_bitcoind_wallet(c,tx_hex,sig_data,keys,opts) if sig_tx['complete']: prompt = "OK\nSave signed transaction?" if user_confirm(prompt,default_yes=True): write_signed_tx_to_file(tx_hex,sig_tx['hex'],metadata,inputs_data,b2m_map,opts) else: msg("failed\nSome keys were missing. Transaction could not be signed.") sys.exit(3)