mmgen-txcreate 4.7 KB

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  1. #!/usr/bin/env python
  2. #
  3. # mmgen = Multi-Mode GENerator, command-line Bitcoin cold storage solution
  4. # Copyright (C) 2013 by philemon <mmgen-py@yandex.com>
  5. #
  6. # This program is free software: you can redistribute it and/or modify
  7. # it under the terms of the GNU General Public License as published by
  8. # the Free Software Foundation, either version 3 of the License, or
  9. # (at your option) any later version.
  10. #
  11. # This program is distributed in the hope that it will be useful,
  12. # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13. # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  14. # GNU General Public License for more details.
  15. #
  16. # You should have received a copy of the GNU General Public License
  17. # along with this program. If not, see <http://www.gnu.org/licenses/>.
  18. """
  19. mmgen-txcreate: Create a BTC transaction, sending to specified addresses
  20. """
  21. import sys
  22. #from hashlib import sha256
  23. from mmgen.Opts import *
  24. from mmgen.license import *
  25. from mmgen.config import *
  26. from mmgen.tx import *
  27. from mmgen.utils import check_opts, msg, msg_r, user_confirm
  28. from decimal import Decimal
  29. prog_name = sys.argv[0].split("/")[-1]
  30. help_data = {
  31. 'prog_name': prog_name,
  32. 'desc': "Create a BTC transaction, sending to specified addresses",
  33. 'usage': "[opts] <address:amount>[,...] <transaction fee> <change address>",
  34. 'options': """
  35. -h, --help Print this help message
  36. -d, --outdir d Specify an alternate directory 'd' for output
  37. -e, --echo-passphrase Print passphrase to screen when typing it
  38. -i, --info Display unspent outputs and exit
  39. -q, --quiet Suppress warnings; overwrite files without
  40. prompting
  41. Outputs to spend are chosen by the user via a menu.
  42. Ages of transactions are approximate based on an average block discovery
  43. interval of %s minutes.
  44. """ % mins_per_block
  45. }
  46. short_opts = "hd:eiq"
  47. long_opts = "help","outdir=","echo_passphrase","info","quiet"
  48. opts,cmd_args = process_opts(sys.argv,help_data,short_opts,long_opts)
  49. # Exits on invalid input
  50. check_opts(opts, ('outdir',))
  51. if debug:
  52. print "Processed options: %s" % repr(opts)
  53. print "Cmd args: %s" % repr(cmd_args)
  54. if len(cmd_args) == 3:
  55. rcpt_arg,tx_fee,change_addr = cmd_args
  56. check_address(change_addr)
  57. elif len(cmd_args) == 2:
  58. rcpt_arg,tx_fee = cmd_args
  59. change_addr = ""
  60. elif len(cmd_args) == 0 and 'info' in opts:
  61. pass
  62. else: usage(help_data)
  63. if not 'info' in opts:
  64. tx_out = make_tx_out(rcpt_arg)
  65. for i in tx_out.keys(): check_address(i)
  66. for i in tx_out.values(): check_btc_amt(i)
  67. tx_fee = check_btc_amt(tx_fee)
  68. # Begin execution
  69. c = connect_to_bitcoind()
  70. if not 'quiet' in opts and not 'info' in opts: do_license_msg()
  71. # Begin test
  72. # import mmgen.rpc
  73. # us = eval(get_data_from_file("listunspent.json"))
  74. # End test
  75. us = c.listunspent()
  76. if not us:
  77. msg_r("""
  78. No spendable outputs found! Import addresses with balances into your
  79. watch-only wallet using 'mmgen-addrimport' and then re-run this program.
  80. """)
  81. sys.exit(2)
  82. # write_to_file("listunspent.json",repr(us))
  83. # sys.exit()
  84. unspent = sort_and_view(us)
  85. total = trim_exponent(sum([i.amount for i in unspent]))
  86. msg("Total unspent: %s BTC (%s outputs)" % (total, len(unspent)))
  87. if 'info' in opts: sys.exit(0)
  88. send_amt = sum(tx_out.values())
  89. msg("Total amount to spend: %s BTC" % send_amt)
  90. while True:
  91. sel_nums = select_outputs(unspent,
  92. "Enter a range or space-separated list of outputs to spend: ")
  93. msg("Selected outputs: %s" % " ".join(str(i) for i in sel_nums))
  94. sel_unspent = [unspent[i-1] for i in sel_nums]
  95. lbls = set([verify_mmgen_label(
  96. i.account,return_str=True,check_label_len=True)
  97. for i in sel_unspent])
  98. lbls.discard("")
  99. if lbls and len(lbls) < len(sel_unspent):
  100. msg(txmsg['mixed_inputs'] % ", ".join(sorted(lbls)))
  101. if not user_confirm("Accept?"):
  102. continue
  103. total_in = trim_exponent(sum([o.amount for o in sel_unspent]))
  104. change = trim_exponent(total_in - (send_amt + tx_fee))
  105. if change >= 0:
  106. prompt = "Transaction produces %s BTC in change. OK?" % change
  107. if user_confirm(prompt,default_yes=True):
  108. break
  109. else:
  110. msg(txmsg['not_enough_btc'] % change)
  111. if change > 0 and not change_addr:
  112. msg(txmsg['throwaway_change'] % (change, total_in-tx_fee))
  113. sys.exit(2)
  114. tx_in = [{"txid":i.txid, "vout":i.vout} for i in sel_unspent]
  115. for i in tx_out.keys(): tx_out[i] = float(tx_out[i])
  116. if change: tx_out[change_addr] = float(change)
  117. tx_hex = c.createrawtransaction(tx_in,tx_out)
  118. prompt = "Transaction successfully created\nView decoded transaction?"
  119. if user_confirm(prompt,default_yes=False):
  120. view_tx_data(c,[i.__dict__ for i in sel_unspent],tx_hex)
  121. prompt = "Save transaction?"
  122. if user_confirm(prompt,default_yes=True):
  123. print_tx_to_file(tx_hex,sel_unspent,send_amt,opts)