#!/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: Create a BTC transaction, sending to specified addresses """ import sys #from hashlib import sha256 from mmgen.Opts import * from mmgen.license import * import mmgen.config as g from mmgen.tx import * from mmgen.utils import msg, msg_r, user_confirm from decimal import Decimal prog_name = sys.argv[0].split("/")[-1] help_data = { 'prog_name': prog_name, 'desc': "Create a BTC transaction with outputs to specified addresses", 'usage': "[opts] ... [change addr] [tx fee] [addr 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 unspent outputs and exit -q, --quiet Suppress warnings; overwrite files without prompting -f, --tx-fee f Transaction fee (default: %s BTC) Transaction inputs are chosen from a list of the user's unpent outputs via an interactive menu. Ages of transactions are approximate based on an average block creation interval of %s minutes. Addresses on the command line can be Bitcoin addresses or MMGen addresses in the form : """ % (Decimal(g.tx_fee),g.mins_per_block) } short_opts = "ha:d:eiqf:" long_opts = "help","addr_file","outdir=","echo_passphrase","info","quiet",\ "tx_fee=" opts,cmd_args = process_opts(sys.argv,help_data,short_opts,long_opts) check_opts(opts,long_opts) if g.debug: show_opts_and_cmd_args(opts,cmd_args) if not 'info' in opts: outputs,addr_files,change_addr = [],[],"" for a in cmd_args: if a.split(".")[-1] == g.addrfile_ext: check_infile(a) addr_files.append(a) elif "," in a: outputs.append(a) else: if change_addr: msg("More than one change address specified: %s, %s" % (change_addr, a)) sys.exit(2) change_addr = a if not outputs: msg("At least one output must be specified on the command line") sys.exit(2) addr_data = [parse_addrs_file(f) for f in addr_files] tx_fee = opts['tx_fee'] if 'tx_fee' in opts else g.tx_fee try: tx_fee = Decimal(tx_fee) except: msg("Invalid transaction fee format: %s" % tx_fee) sys.exit(2) if tx_fee > g.max_tx_fee: msg("Transaction fee too large: %s > %s" % (tx_fee,g.max_tx_fee)) sys.exit(2) if change_addr: if ":" in change_addr: change_addr = mmgen_addr_to_btc_addr(change_addr,addr_data) else: check_address(change_addr) tx_out = make_tx_out(outputs,addr_data) 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) if g.debug: show_opts_and_cmd_args(opts,cmd_args) # Begin execution c = connect_to_bitcoind() if not 'quiet' in opts and not 'info' in opts: do_license_msg(immed=True) # Begin test # import mmgen.rpc # us = eval(get_data_from_file("listunspent.json")) # End test us = c.listunspent() if not us: msg_r(""" No spendable outputs found! Import addresses with balances into your watch-only wallet using 'mmgen-addrimport' and then re-run this program. """) sys.exit(2) # write_to_file("listunspent.json",repr(us)) # sys.exit() unspent = sort_and_view(us) total = trim_exponent(sum([i.amount for i in unspent])) msg("Total unspent: %s BTC (%s outputs)" % (total, len(unspent))) if 'info' in opts: sys.exit(0) send_amt = sum(tx_out.values()) msg("Total amount to spend: %s BTC" % send_amt) while True: sel_nums = select_outputs(unspent, "Enter a range or space-separated list of outputs to spend: ") msg("Selected outputs: %s" % " ".join(str(i) for i in sel_nums)) sel_unspent = [unspent[i-1] for i in sel_nums] lbls = set([verify_mmgen_label( i.account,return_str=True,check_label_len=True) for i in sel_unspent]) lbls.discard("") if lbls and len(lbls) < len(sel_unspent): msg(txmsg['mixed_inputs'] % ", ".join(sorted(lbls))) 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) if g.debug: print "tx_in:", repr(tx_in) print "tx_out:", repr(tx_out) tx_hex = c.createrawtransaction(tx_in,tx_out) msg("Transaction successfully created") prompt = "View decoded transaction? (y)es, (N)o, (v)iew in pager" reply = prompt_and_get_char(prompt,"YyNnVv",enter_ok=True) if reply and reply in "YyVv": pager = True if reply in "Vv" else False view_tx_data(c,[i.__dict__ for i in sel_unspent],tx_hex,pager=pager) prompt = "Save transaction?" if user_confirm(prompt,default_yes=True): print_tx_to_file(tx_hex,sel_unspent,send_amt,opts) else: msg("Transaction not saved")