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# Copyright (C) 2015 Patrick Totzke <patricktotzke@gmail.com>
# This file is released under the GNU GPL, version 3 or a later revision.
# For further details see the COPYING file
from twisted.internet.defer import inlineCallbacks, returnValue
from alot.errors import GPGProblem, GPGCode
from alot import crypto
@inlineCallbacks
def get_keys(ui, encrypt_keyids, block_error=False):
"""Get several keys from the GPG keyring. The keys are selected by keyid
and are checked if they can be used for encryption.
:param ui: the main user interface object
:type ui: alot.ui.UI
:param encrypt_keyids: the key ids of the keys to get
:type encrypt_keyids: list(str)
:param block_error: wether error messages for the user should expire
automatically or block the ui
:type block_error: bool
:returns: the available keys indexed by their key hash
:rtype: dict(str->gpgme.Key)
"""
keys = {}
for keyid in encrypt_keyids:
try:
key = crypto.get_key(keyid, validate=True, encrypt=True)
except GPGProblem as e:
if e.code == GPGCode.AMBIGUOUS_NAME:
possible_keys = crypto.list_keys(hint=keyid)
tmp_choices = [k.uids[0].uid for k in possible_keys]
choices = {str(len(tmp_choices) - x): tmp_choices[x]
for x in range(0, len(tmp_choices))}
keyid = yield ui.choice("ambiguous keyid! Which " +
"key do you want to use?",
choices, cancel=None)
if keyid:
encrypt_keyids.append(keyid)
continue
else:
ui.notify(e.message, priority='error', block=block_error)
continue
keys[crypto.hash_key(key)] = key
returnValue(keys)
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