#!/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-txcreate: Send BTC to specified addresses """ 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 check_opts, msg, user_confirm from decimal import Decimal prog_name = sys.argv[0].split("/")[-1] help_data = { 'prog_name': prog_name, 'desc': "Send BTC to specified addresses", 'usage': "[opts] [,...] ", '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 unspent outputs and exit -q, --quiet Suppress warnings; overwrite files without asking Outputs to spend are chosen by the user via a menu. Ages of transactions are approximate based on an estimated block discovery time of %s minutes. """ % mins_per_block } short_opts = "hd:eiq" long_opts = "help","outdir=","echo_passphrase","info","quiet" opts,cmd_args = process_opts(sys.argv,help_data,short_opts,long_opts) # Exits on invalid input check_opts(opts, ('outdir',)) if debug: print "Processed options: %s" % repr(opts) print "Cmd args: %s" % repr(cmd_args) if len(cmd_args) == 3: rcpt_arg,tx_fee,change_addr = cmd_args check_address(change_addr) elif len(cmd_args) == 2: rcpt_arg,tx_fee = cmd_args change_addr = "" elif len(cmd_args) == 0 and 'info' in opts: pass else: usage(help_data) if not 'info' in opts: tx_out = make_tx_out(rcpt_arg) for i in tx_out.keys(): check_address(i) for i in tx_out.values(): check_btc_amt(i) tx_fee = check_btc_amt(tx_fee) # Begin execution c = connect_to_bitcoind() if not 'quiet' in opts and not 'info' in opts: do_license_msg() unspent = sort_and_view(c.listunspent()) total = trim_exponent(sum([i.amount for i in unspent])) msg("Total unspent: %s BTC" % total) if 'info' in opts: sys.exit(0) send_amt = sum(tx_out.values()) msg("Total amount to spend: %s BTC" % send_amt) msg("%s unspent outputs total" % len(unspent)) while True: sel_nums = select_outputs(unspent,"Choose the outputs to spend: ") sel_unspent = [unspent[i] for i in sel_nums] mmgen_sel,other_sel = [],[] for i in sel_nums: if verify_mmgen_label(unspent[i].account): mmgen_sel.append(i) else: other_sel.append(i) if mmgen_sel and other_sel: keygen_args = [unspent[i].account.split()[0][9:] for i in mmgen_sel] msg(""" NOTE: This transaction uses a mixture of both mmgen and non-mmgen inputs, which makes the signing process more complicated. When signing the transaction, keys for the non-mmgen inputs must be supplied in a separate file using mmgen-txsign's '-k' option. Alternatively, you may import the mmgen keys into the wallet.dat of your offline bitcoind, first running mmgen-keygen with address list '%s' to generate the keys. Finally, run mmgen-txsign with the '-f' option to force the use of wallet.dat as the key source. """.strip() % ",".join(sorted(keygen_args))) if not user_confirm("Accept?"): continue total_in = trim_exponent(sum([o.amount for o in sel_unspent])) change = trim_exponent(total_in - (send_amt + tx_fee)) if change >= 0: prompt = "Transaction produces %s BTC in change. OK?" % change if user_confirm(prompt,default_yes=True): break else: msg(txmsg['not_enough_btc'] % change) if change > 0 and not change_addr: msg(txmsg['throwaway_change'] % (change, total_in-tx_fee)) sys.exit(2) tx_in = [{"txid":i.txid, "vout":i.vout} for i in sel_unspent] for i in tx_out.keys(): tx_out[i] = float(tx_out[i]) if change: tx_out[change_addr] = float(change) tx_hex = c.createrawtransaction(tx_in,tx_out) msg("Transaction successfully created") prompt = "View decoded transaction?" if user_confirm(prompt,default_yes=False): view_tx_data(c,[i.__dict__ for i in sel_unspent],tx_hex) prompt = "Save transaction?" if user_confirm(prompt,default_yes=True): print_tx_to_file(tx_hex,sel_unspent,send_amt,opts)