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#!/usr/bin/python3
#/***************************************************************************
# * Copyright (C) 2019 Daniel Mueller (deso@posteo.net) *
# * *
# * 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/>. *
# ***************************************************************************/
from argparse import (
ArgumentParser,
)
from csv import (
writer as CsvWriter,
QUOTE_MINIMAL,
)
from subprocess import (
CalledProcessError,
check_call,
)
from sys import (
argv,
stderr,
stdout,
exit,
)
FORMAT_CSV = "csv"
FORMAT_PSKC = "pskc"
def setupArgumentParser():
"""Create and initialize an argument parser, ready for use."""
parser = ArgumentParser(prog="otp-export")
parser.add_argument(
"--nitrocli", default=None, dest="nitrocli",
help="The path of the nitrocli executable.",
)
parser.add_argument(
"--model", default=None, dest="model",
help="The Nitrokey model to use.",
)
parser.add_argument(
"slot", type=int, help="The OTP slot to use",
)
parser.add_argument(
"name", help="The name of the slot",
)
parser.add_argument(
"secret",
help="The secret to store on the slot as a hexadecimal string (unless --ascii is set)",
)
parser.add_argument(
"-a", "--algorithm", action="store", choices=("hotp", "totp"), dest="algorithm",
help="The OTP algorithm to use (hotp or totp, default: totp)",
)
parser.add_argument(
"-c", "--counter", action="store", dest="counter", type=int,
help="The counter value for HOTP (default: 0)",
)
parser.add_argument(
"-d", "--digits", action="store", choices=(6, 8), dest="digits", type=int,
help="The number of digits to use for the one-time password (6 or 8, default: 6)",
)
parser.add_argument(
"--export-format", action="store", choices=(FORMAT_CSV, FORMAT_PSKC),
dest="export", default=FORMAT_CSV,
help="The format to export the OTP as (default: %s)." % FORMAT_CSV,
)
parser.add_argument(
"-f", "--format", choices=("ascii", "base32", "hex"), dest="format",
help="The format of the secret (ascii|base32|hex)",
)
parser.add_argument(
"-t", "--time-window", action="store", dest="window", type=int,
help="The time window for TOTP (default: 30)",
)
return parser
def main(args):
"""The main function interprets the arguments and acts upon them."""
parser = setupArgumentParser()
namespace = parser.parse_args(args)
nitrocli = namespace.nitrocli
if nitrocli is None:
raise RuntimeError("--nitrocli option not supplied as expected.")
args = [
"otp", "set",
str(namespace.slot),
namespace.name,
namespace.secret
]
if namespace.model is not None:
args += ["--model", namespace.model]
if namespace.algorithm is not None:
args += ["--algorithm", namespace.algorithm]
if namespace.counter is not None:
args += ["--counter", str(namespace.counter)]
if namespace.digits is not None:
args += ["--digits", str(namespace.digits)]
if namespace.format is not None:
args += ["--format", namespace.format]
if namespace.window is not None:
args += ["--time-window", str(namespace.window)]
try:
check_call([nitrocli] + args)
except CalledProcessError as e:
# nitrocli will have reported the error already, so don't print it again;
# just mirror the exit code.
return e.returncode
else:
if namespace.export == FORMAT_CSV:
# TODO: Use actually defined CSV format for OTP secret.
csv = CsvWriter(stdout, delimiter=",", quotechar="|", quoting=QUOTE_MINIMAL)
csv.writerow([namespace.name, namespace.secret])
else:
# TODO: Implement PSKC export.
print("Only csv format is currently supported.", file=stderr)
return 1
return 0
if __name__ == "__main__":
exit(main(argv[1:]))
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