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#
# This file is a part of the Mailman PGP plugin.
#
# 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/>.
"""A combined PGP/MIME + inline PGP wrapper."""
from public import public
from mailman_pgp.pgp.inline import InlineWrapper
from mailman_pgp.pgp.mime import MIMEWrapper
@public
class PGPWrapper():
"""A combined PGP/MIME + inline PGP wrapper."""
def __init__(self, msg, default=MIMEWrapper):
"""
Wrap the given message.
:param msg: The message to wrap.
:type msg: mailman.email.message.Message
:param default:
:type default: MIMEWrapper or InlineWrapper
"""
self.msg = msg
self.mime = MIMEWrapper(msg)
self.inline = InlineWrapper(msg)
if default is MIMEWrapper:
self.default = self.mime
elif default is InlineWrapper:
self.default = self.inline
else:
raise ValueError('Default wrapper must be one of ' +
MIMEWrapper.__name__ + ' ' +
InlineWrapper.__name__ + '.')
def get_payload(self):
return self.default.get_payload()
def is_signed(self):
return self.mime.is_signed() or self.inline.is_signed()
def has_signature(self):
return self.mime.has_signature() or self.inline.has_signature()
def get_signed(self):
if self.mime.is_signed():
yield from self.mime.get_signed()
elif self.inline.is_signed():
yield from self.inline.get_signed()
def sign(self, key, **kwargs):
return self.default.sign(key, **kwargs)
def verify(self, key):
"""
Verify the signature of this message with key.
:param key: The key to verify with.
:type key: pgpy.PGPKey
:return: The verified signature.
:rtype: generator of pgpy.types.SignatureVerification
"""
if self.mime.is_signed():
yield from self.mime.verify(key)
elif self.inline.is_signed():
yield from self.inline.verify(key)
def verifies(self, key):
return all(bool(verification) for verification in self.verify(key))
def is_encrypted(self):
return self.mime.is_encrypted() or self.inline.is_encrypted()
def has_encryption(self):
return self.mime.has_encryption() or self.inline.has_encryption()
def encrypt(self, *keys, **kwargs):
return self.default.encrypt(*keys, **kwargs)
def decrypt(self, key):
"""
Decrypt this message with key.
:param key: The key to decrypt with.
:type key: pgpy.PGPKey
:return: The decrypted message.
:rtype: PGPMessage
"""
if self.mime.is_encrypted():
return self.mime.decrypt(key)
elif self.inline.is_encrypted():
return self.inline.decrypt(key)
def is_keys(self):
return self.mime.is_keys() or self.inline.is_keys()
def has_keys(self):
return self.mime.has_keys() or self.inline.has_keys()
def keys(self):
"""
Get the collection of keys in this message.
:return: A collection of keys.
"""
if self.mime.has_keys():
yield from self.mime.keys()
elif self.inline.has_keys():
yield from self.inline.keys()
def sign_encrypt(self, key, *keys, **kwargs):
return self.default.sign_encrypt(key, *keys, **kwargs)
def sign_then_encrypt(self, key, *keys, **kwargs):
return self.default.sign_then_encrypt(key, *keys, **kwargs)
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