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- #!/usr/bin/env python
- #
- # mmgen = Multi-Mode GENerator, command-line Bitcoin cold storage solution
- # Copyright (C) 2013 by philemon <mmgen-py@yandex.com>
- #
- # 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 <http://www.gnu.org/licenses/>.
- """
- 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.util 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] <addr,amt> ... [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 <seed ID>:<number>
- """ % (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")
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