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#!/usr/bin/env python3
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# -*- coding: utf-8 -*-
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from __future__ import absolute_import, division, unicode_literals
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import gpg
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import os
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import os.path
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import subprocess
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import sys
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# Copyright (C) 2018 Ben McGinnes <ben@gnupg.org>
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#
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# This program is free software; you can redistribute it and/or modify it under
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# the terms of the GNU General Public License as published by the Free Software
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# Foundation; either version 2 of the License, or (at your option) any later
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# version.
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#
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# This program is free software; you can redistribute it and/or modify it under
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# the terms of the GNU Lesser General Public License as published by the Free
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# Software Foundation; either version 2.1 of the License, or (at your option)
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# any later version.
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#
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU General Public License and the GNU
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# Lesser 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 and the GNU
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# Lesser General Public along with this program; if not, see
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# <https://www.gnu.org/licenses/>.
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print("""
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This script exports one or more secret keys as both ASCII armored and binary
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file formats, saved in files within the user's GPG home directory.
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The gpg-agent and pinentry are invoked to authorise the export.
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""")
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if sys.platform == "win32":
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gpgconfcmd = "gpgconf.exe --list-dirs homedir"
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else:
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gpgconfcmd = "gpgconf --list-dirs homedir"
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a = gpg.Context(armor=True)
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b = gpg.Context()
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c = gpg.Context()
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if len(sys.argv) >= 4:
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keyfile = sys.argv[1]
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logrus = sys.argv[2]
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homedir = sys.argv[3]
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elif len(sys.argv) == 3:
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keyfile = sys.argv[1]
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logrus = sys.argv[2]
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homedir = input("Enter the GPG configuration directory path (optional): ")
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elif len(sys.argv) == 2:
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keyfile = sys.argv[1]
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logrus = input("Enter the UID matching the secret key(s) to export: ")
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homedir = input("Enter the GPG configuration directory path (optional): ")
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else:
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keyfile = input("Enter the filename to save the secret key to: ")
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logrus = input("Enter the UID matching the secret key(s) to export: ")
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homedir = input("Enter the GPG configuration directory path (optional): ")
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if len(homedir) == 0:
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homedir = None
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elif homedir.startswith("~"):
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userdir = os.path.expanduser(homedir)
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if os.path.exists(userdir) is True:
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homedir = os.path.realpath(userdir)
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else:
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homedir = None
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else:
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homedir = os.path.realpath(homedir)
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if homedir is not None and os.path.exists(homedir) is False:
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homedir = None
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elif homedir is not None and os.path.exists(homedir) is True:
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if os.path.isdir(homedir) is False:
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homedir = None
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else:
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pass
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if homedir is not None:
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c.home_dir = homedir
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else:
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pass
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if c.home_dir is not None:
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if c.home_dir.endswith("/"):
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gpgfile = "{0}{1}.gpg".format(c.home_dir, keyfile)
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ascfile = "{0}{1}.asc".format(c.home_dir, keyfile)
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else:
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gpgfile = "{0}/{1}.gpg".format(c.home_dir, keyfile)
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ascfile = "{0}/{1}.asc".format(c.home_dir, keyfile)
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else:
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if os.path.exists(os.environ["GNUPGHOME"]) is True:
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hd = os.environ["GNUPGHOME"]
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else:
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try:
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hd = subprocess.getoutput(gpgconfcmd)
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except:
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process = subprocess.Popen(gpgconfcmd.split(),
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stdout=subprocess.PIPE)
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procom = process.communicate()
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if sys.version_info[0] == 2:
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hd = procom[0].strip()
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else:
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hd = procom[0].decode().strip()
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gpgfile = "{0}/{1}.gpg".format(hd, keyfile)
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ascfile = "{0}/{1}.asc".format(hd, keyfile)
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try:
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a_result = a.key_export_secret(pattern=logrus)
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b_result = b.key_export_secret(pattern=logrus)
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except:
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a_result = a.key_export_secret(pattern=None)
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b_result = b.key_export_secret(pattern=None)
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if a_result is not None:
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with open(ascfile, "wb") as f:
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f.write(a_result)
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os.chmod(ascfile, 0o600)
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else:
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pass
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if b_result is not None:
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with open(gpgfile, "wb") as f:
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f.write(b_result)
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os.chmod(gpgfile, 0o600)
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else:
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pass
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