149 lines
5.3 KiB
Python
Executable file
149 lines
5.3 KiB
Python
Executable file
#!/usr/bin/env python
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#
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# mmgen = Multi-Mode GENerator, command-line Bitcoin cold storage solution
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# Copyright (C) 2013 by philemon <mmgen-py@yandex.com>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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"""
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mmgen-txsign: Sign a Bitcoin transaction generated by mmgen-txcreate
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"""
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import sys
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from mmgen.Opts import *
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from mmgen.license import *
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from mmgen.config import *
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from mmgen.tx import *
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from mmgen.utils import msg
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help_data = {
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'prog_name': sys.argv[0].split("/")[-1],
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'desc': "Sign a Bitcoin transaction generated by mmgen-txcreate",
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'usage': "[opts] <transaction file> [mmgen wallet/seed/words/brain file]...",
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'options': """
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-h, --help Print this help message
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-d, --outdir d Specify an alternate directory 'd' for output
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-e, --echo-passphrase Print passphrase to screen when typing it
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-i, --info Display information about the transaction and exit
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-I, --tx_id Display transaction ID and exit
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-k, --keys-from-file k Provide additional key data from file 'k'
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-P, --passwd-file f Get passphrase from file 'f'
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-q, --quiet Suppress warnings; overwrite files without
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prompting
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-b, --from-brain l,p Generate keys from a user-created password,
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i.e. a "brainwallet", using seed length 'l' and
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hash preset 'p' (comma-separated)
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-m, --from-mnemonic Generate keys from an electrum-like mnemonic
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-s, --from-seed Generate keys from a seed in .{} format
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-w, --use-wallet-dat Use the keys in the bitcoind wallet.dat file too
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Transactions with either mmgen or non-mmgen input addresses may be signed.
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For non-mmgen inputs, the bitcoind wallet.dat is used as the key source.
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For mmgen inputs, key data is generated from your seed as with the
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mmgen-addrgen and mmgen-keygen utilities.
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Data for the --from-<what> options will be taken from a file if a second
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file is specified on the command line. Otherwise, the user will be
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prompted to enter the data.
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In cases of transactions with mixed mmgen and non-mmgen inputs, non-mmgen
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keys must be supplied in a separate file (WIF format, one key per line)
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using the '--keys-from-file' option. Alternatively, one may import the
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required mmgen keys into the bitcoind wallet.dat and use the
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'--force-wallet-dat' option.
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Seed data supplied in files must have the following extensions:
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wallet: '.{}'
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seed: '.{}'
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mnemonic: '.{}'
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brainwallet: '.{}'
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""".format(seed_ext,wallet_ext,seed_ext,mn_ext,brain_ext)
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}
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short_opts = "hd:eiIk:P:qb:msw"
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long_opts = "help","outdir=","echo_passphrase","info","tx_id",\
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"keys_from_file=","passwd_file=","quiet","from_brain=",\
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"from_mnemonic","from_seed","use_wallet_dat"
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opts,infiles = process_opts(sys.argv,help_data,short_opts,long_opts)
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check_opts(opts,long_opts)
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if not infiles: usage(help_data)
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for i in infiles: check_infile(i)
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# Begin execution
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c = connect_to_bitcoind()
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tx_file = infiles.pop(0)
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m = "" if 'tx_id' in opts else "transaction data"
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tx_data = get_lines_from_file(tx_file,m)
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metadata,tx_hex,sig_data,inputs_data = parse_tx_data(tx_data,tx_file)
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if 'tx_id' in opts:
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msg(metadata[0])
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sys.exit(0)
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if 'info' in opts:
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view_tx_data(c,inputs_data,tx_hex,metadata)
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sys.exit(0)
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if not 'quiet' in opts: do_license_msg(immed=True)
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msg("Successfully opened transaction file '%s'" % tx_file)
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prompt = "View transaction data? (y)es, (N)o, (v)iew in pager"
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reply = prompt_and_get_char(prompt,"YyNnVv",enter_ok=True)
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if reply and reply in "YyVv":
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p = True if reply in "Vv" else False
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view_tx_data(c,inputs_data,tx_hex,metadata,pager=p)
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# Are inputs mmgen addresses?
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mmgen_addrs = [i for i in inputs_data if verify_mmgen_label(i['account'])]
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other_addrs = [i for i in inputs_data if not verify_mmgen_label(i['account'])]
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keys = get_lines_from_file(opts['keys_from_file'],"key data") \
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if 'keys_from_file' in opts else []
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if mmgen_addrs:
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if other_addrs and not keys and not 'use_wallet_dat' in opts:
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missing_keys_errormsg(other_addrs)
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sys.exit(2)
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keys += get_keys_for_mmgen_addrs(mmgen_addrs,infiles,opts)
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if 'use_wallet_dat' in opts:
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sig_tx = sign_tx_with_bitcoind_wallet(c,tx_hex,sig_data,keys,opts)
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else:
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sig_tx = sign_transaction(c,tx_hex,sig_data,keys)
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elif other_addrs:
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if 'use_wallet_dat' in opts:
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sig_tx = sign_tx_with_bitcoind_wallet(c,tx_hex,sig_data,keys,opts)
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else:
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if keys:
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sig_tx = sign_transaction(c,tx_hex,sig_data,keys)
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else:
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missing_keys_errormsg(other_addrs)
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sys.exit(2)
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if sig_tx['complete']:
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msg("Signing completed")
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prompt = "Save signed transaction?"
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if user_confirm(prompt,default_yes=True):
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print_signed_tx_to_file(tx_hex,sig_tx['hex'],metadata,opts)
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else:
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msg("Some keys were missing. Transaction could not be signed.")
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sys.exit(3)
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