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-rw-r--r--src/leap/bitmask/keymanager/__init__.py842
-rw-r--r--src/leap/bitmask/keymanager/_version.py484
-rw-r--r--src/leap/bitmask/keymanager/documents.py101
-rw-r--r--src/leap/bitmask/keymanager/errors.py119
-rw-r--r--src/leap/bitmask/keymanager/keys.py290
-rw-r--r--src/leap/bitmask/keymanager/migrator.py167
-rw-r--r--src/leap/bitmask/keymanager/openpgp.py881
-rw-r--r--src/leap/bitmask/keymanager/validation.py129
-rw-r--r--src/leap/bitmask/keymanager/wrapper.py134
9 files changed, 3147 insertions, 0 deletions
diff --git a/src/leap/bitmask/keymanager/__init__.py b/src/leap/bitmask/keymanager/__init__.py
new file mode 100644
index 00000000..0b8a5b30
--- /dev/null
+++ b/src/leap/bitmask/keymanager/__init__.py
@@ -0,0 +1,842 @@
+# -*- coding: utf-8 -*-
+# __init__.py
+# Copyright (C) 2013 LEAP
+#
+# 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/>.
+"""
+Key Manager is a Nicknym agent for LEAP client.
+"""
+# let's do a little sanity check to see if we're using the wrong gnupg
+import fileinput
+import os
+import sys
+import tempfile
+import json
+import urllib
+
+from leap.common import ca_bundle
+from twisted.web import client
+from twisted.web._responses import NOT_FOUND
+
+from ._version import get_versions
+
+try:
+ from gnupg.gnupg import GPGUtilities
+ assert(GPGUtilities) # pyflakes happy
+ from gnupg import __version__ as _gnupg_version
+ if '-' in _gnupg_version:
+ # avoid Parsing it as LegacyVersion, get just
+ # the release numbers:
+ _gnupg_version = _gnupg_version.split('-')[0]
+ from pkg_resources import parse_version
+ # We need to make sure that we're not colliding with the infamous
+ # python-gnupg
+ assert(parse_version(_gnupg_version) >= parse_version('1.4.0'))
+
+except (ImportError, AssertionError):
+ print "*******"
+ print "Ooops! It looks like there is a conflict in the installed version "
+ print "of gnupg."
+ print "GNUPG_VERSION:", _gnupg_version
+ print
+ print "Disclaimer: Ideally, we would need to work a patch and propose the "
+ print "merge to upstream. But until then do: "
+ print
+ print "% pip uninstall python-gnupg"
+ print "% pip install gnupg"
+ print "*******"
+ sys.exit(1)
+
+import logging
+
+from twisted.internet import defer
+from urlparse import urlparse
+
+from leap.common.check import leap_assert
+from leap.common.http import HTTPClient
+from leap.common.events import emit_async, catalog
+from leap.common.decorators import memoized_method
+
+from leap.keymanager.errors import (
+ KeyNotFound,
+ KeyNotValidUpgrade,
+ InvalidSignature
+)
+from leap.keymanager.validation import ValidationLevels, can_upgrade
+from leap.keymanager.openpgp import OpenPGPScheme
+
+__version__ = get_versions()['version']
+del get_versions
+
+logger = logging.getLogger(__name__)
+
+
+#
+# The Key Manager
+#
+
+class KeyManager(object):
+
+ #
+ # server's key storage constants
+ #
+
+ OPENPGP_KEY = 'openpgp'
+ PUBKEY_KEY = "user[public_key]"
+
+ def __init__(self, address, nickserver_uri, soledad, token=None,
+ ca_cert_path=None, api_uri=None, api_version=None, uid=None,
+ gpgbinary=None):
+ """
+ Initialize a Key Manager for user's C{address} with provider's
+ nickserver reachable in C{nickserver_uri}.
+
+ :param address: The email address of the user of this Key Manager.
+ :type address: str
+ :param nickserver_uri: The URI of the nickserver.
+ :type nickserver_uri: str
+ :param soledad: A Soledad instance for local storage of keys.
+ :type soledad: leap.soledad.Soledad
+ :param token: The token for interacting with the webapp API.
+ :type token: str
+ :param ca_cert_path: The path to the CA certificate.
+ :type ca_cert_path: str
+ :param api_uri: The URI of the webapp API.
+ :type api_uri: str
+ :param api_version: The version of the webapp API.
+ :type api_version: str
+ :param uid: The user's UID.
+ :type uid: str
+ :param gpgbinary: Name for GnuPG binary executable.
+ :type gpgbinary: C{str}
+ """
+ self._address = address
+ self._nickserver_uri = nickserver_uri
+ self._soledad = soledad
+ self._token = token
+ self.ca_cert_path = ca_cert_path
+ self.api_uri = api_uri
+ self.api_version = api_version
+ self.uid = uid
+ self._openpgp = OpenPGPScheme(soledad, gpgbinary=gpgbinary)
+ self._combined_ca_bundle = self._create_combined_bundle_file()
+ self._async_client = HTTPClient(self._combined_ca_bundle)
+ self._async_client_pinned = HTTPClient(self._ca_cert_path)
+
+ #
+ # destructor
+ #
+
+ def __del__(self):
+ try:
+ created_tmp_combined_ca_bundle = self._combined_ca_bundle not in \
+ [ca_bundle.where(), self._ca_cert_path]
+ if created_tmp_combined_ca_bundle:
+ os.remove(self._combined_ca_bundle)
+ except OSError:
+ pass
+
+ #
+ # utilities
+ #
+
+ def _create_combined_bundle_file(self):
+ leap_ca_bundle = ca_bundle.where()
+
+ if self._ca_cert_path == leap_ca_bundle:
+ return self._ca_cert_path # don't merge file with itself
+ elif not self._ca_cert_path:
+ return leap_ca_bundle
+
+ tmp_file = tempfile.NamedTemporaryFile(delete=False)
+
+ with open(tmp_file.name, 'w') as fout:
+ fin = fileinput.input(files=(leap_ca_bundle, self._ca_cert_path))
+ for line in fin:
+ fout.write(line)
+ fin.close()
+
+ return tmp_file.name
+
+ @defer.inlineCallbacks
+ def _get_key_from_nicknym(self, address):
+ """
+ Send a GET request to C{uri} containing C{data}.
+
+ :param address: The URI of the request.
+ :type address: str
+
+ :return: A deferred that will be fired with GET content as json (dict)
+ :rtype: Deferred
+ """
+ try:
+ uri = self._nickserver_uri + '?address=' + address
+ content = yield self._fetch_and_handle_404_from_nicknym(uri, address)
+ json_content = json.loads(content)
+
+ except KeyNotFound:
+ raise
+ except IOError as e:
+ logger.warning("HTTP error retrieving key: %r" % (e,))
+ logger.warning("%s" % (content,))
+ raise KeyNotFound(e.message), None, sys.exc_info()[2]
+ except ValueError as v:
+ logger.warning("Invalid JSON data from key: %s" % (uri,))
+ raise KeyNotFound(v.message + ' - ' + uri), None, sys.exc_info()[2]
+
+ except Exception as e:
+ logger.warning("Error retrieving key: %r" % (e,))
+ raise KeyNotFound(e.message), None, sys.exc_info()[2]
+ # Responses are now text/plain, although it's json anyway, but
+ # this will fail when it shouldn't
+ # leap_assert(
+ # res.headers['content-type'].startswith('application/json'),
+ # 'Content-type is not JSON.')
+ defer.returnValue(json_content)
+
+ def _fetch_and_handle_404_from_nicknym(self, uri, address):
+ """
+ Send a GET request to C{uri} containing C{data}.
+
+ :param uri: The URI of the request.
+ :type uri: str
+ :param address: The email corresponding to the key.
+ :type address: str
+
+ :return: A deferred that will be fired with GET content as json (dict)
+ :rtype: Deferred
+ """
+ def check_404(response):
+ if response.code == NOT_FOUND:
+ message = '%s: %s key not found.' % (response.code, address)
+ logger.warning(message)
+ raise KeyNotFound(message), None, sys.exc_info()[2]
+ return response
+
+ d = self._async_client_pinned.request(str(uri), 'GET', callback=check_404)
+ d.addCallback(client.readBody)
+ return d
+
+ @defer.inlineCallbacks
+ def _get_with_combined_ca_bundle(self, uri, data=None):
+ """
+ Send a GET request to C{uri} containing C{data}.
+
+ Instead of using the ca_cert provided on construction time, this
+ version also uses the default certificates shipped with leap.common
+
+ :param uri: The URI of the request.
+ :type uri: str
+ :param data: The body of the request.
+ :type data: dict, str or file
+
+ :return: A deferred that will be fired with the GET response
+ :rtype: Deferred
+ """
+ try:
+ content = yield self._async_client.request(str(uri), 'GET')
+ except Exception as e:
+ logger.warning("There was a problem fetching key: %s" % (e,))
+ raise KeyNotFound(uri)
+ if not content:
+ raise KeyNotFound(uri)
+ defer.returnValue(content)
+
+ @defer.inlineCallbacks
+ def _put(self, uri, data=None):
+ """
+ Send a PUT request to C{uri} containing C{data}.
+
+ The request will be sent using the configured CA certificate path to
+ verify the server certificate and the configured session id for
+ authentication.
+
+ :param uri: The URI of the request.
+ :type uri: str
+ :param data: The body of the request.
+ :type data: dict, str or file
+
+ :return: A deferred that will be fired when PUT request finishes
+ :rtype: Deferred
+ """
+ leap_assert(
+ self._token is not None,
+ 'We need a token to interact with webapp!')
+ if type(data) == dict:
+ data = urllib.urlencode(data)
+ headers = {'Authorization': [str('Token token=%s' % self._token)]}
+ headers['Content-Type'] = ['application/x-www-form-urlencoded']
+ try:
+ res = yield self._async_client_pinned.request(str(uri), 'PUT',
+ body=str(data),
+ headers=headers)
+ except Exception as e:
+ logger.warning("Error uploading key: %r" % (e,))
+ raise e
+ if 'error' in res:
+ # FIXME: That's a workaround for 500,
+ # we need to implement a readBody to assert response code
+ logger.warning("Error uploading key: %r" % (res,))
+ raise Exception(res)
+
+ @memoized_method(invalidation=300)
+ @defer.inlineCallbacks
+ def _fetch_keys_from_server(self, address):
+ """
+ Fetch keys bound to address from nickserver and insert them in
+ local database.
+
+ :param address: The address bound to the keys.
+ :type address: str
+
+ :return: A Deferred which fires when the key is in the storage,
+ or which fails with KeyNotFound if the key was not found on
+ nickserver.
+ :rtype: Deferred
+
+ """
+ # request keys from the nickserver
+ server_keys = yield self._get_key_from_nicknym(address)
+
+ # insert keys in local database
+ if self.OPENPGP_KEY in server_keys:
+ # nicknym server is authoritative for its own domain,
+ # for other domains the key might come from key servers.
+ validation_level = ValidationLevels.Weak_Chain
+ _, domain = _split_email(address)
+ if (domain == _get_domain(self._nickserver_uri)):
+ validation_level = ValidationLevels.Provider_Trust
+
+ yield self.put_raw_key(
+ server_keys['openpgp'],
+ address=address,
+ validation=validation_level)
+
+ #
+ # key management
+ #
+
+ def send_key(self):
+ """
+ Send user's key to provider.
+
+ Public key bound to user's is sent to provider, which will sign it and
+ replace any prior keys for the same address in its database.
+
+ :return: A Deferred which fires when the key is sent, or which fails
+ with KeyNotFound if the key was not found in local database.
+ :rtype: Deferred
+
+ :raise UnsupportedKeyTypeError: if invalid key type
+ """
+ def send(pubkey):
+ data = {
+ self.PUBKEY_KEY: pubkey.key_data
+ }
+ uri = "%s/%s/users/%s.json" % (
+ self._api_uri,
+ self._api_version,
+ self._uid)
+ d = self._put(uri, data)
+ d.addCallback(lambda _:
+ emit_async(catalog.KEYMANAGER_DONE_UPLOADING_KEYS,
+ self._address))
+ return d
+
+ d = self.get_key(
+ self._address, private=False, fetch_remote=False)
+ d.addCallback(send)
+ return d
+
+ def get_key(self, address, private=False, fetch_remote=True):
+ """
+ Return a key bound to address.
+
+ First, search for the key in local storage. If it is not available,
+ then try to fetch from nickserver.
+
+ :param address: The address bound to the key.
+ :type address: str
+ :param private: Look for a private key instead of a public one?
+ :type private: bool
+ :param fetch_remote: If key not found in local storage try to fetch
+ from nickserver
+ :type fetch_remote: bool
+
+ :return: A Deferred which fires with an EncryptionKey bound to address,
+ or which fails with KeyNotFound if no key was found neither
+ locally or in keyserver or fail with KeyVersionError if the
+ key has a format not supported by this version of KeyManager
+ :rtype: Deferred
+
+ :raise UnsupportedKeyTypeError: if invalid key type
+ """
+ logger.debug("getting key for %s" % (address,))
+
+ emit_async(catalog.KEYMANAGER_LOOKING_FOR_KEY, address)
+
+ def key_found(key):
+ emit_async(catalog.KEYMANAGER_KEY_FOUND, address)
+ return key
+
+ def key_not_found(failure):
+ if not failure.check(KeyNotFound):
+ return failure
+
+ emit_async(catalog.KEYMANAGER_KEY_NOT_FOUND, address)
+
+ # we will only try to fetch a key from nickserver if fetch_remote
+ # is True and the key is not private.
+ if fetch_remote is False or private is True:
+ return failure
+
+ emit_async(catalog.KEYMANAGER_LOOKING_FOR_KEY, address)
+ d = self._fetch_keys_from_server(address)
+ d.addCallback(
+ lambda _: self._openpgp.get_key(address, private=False))
+ d.addCallback(key_found)
+ return d
+
+ # return key if it exists in local database
+ d = self._openpgp.get_key(address, private=private)
+ d.addCallbacks(key_found, key_not_found)
+ return d
+
+ def get_all_keys(self, private=False):
+ """
+ Return all keys stored in local database.
+
+ :param private: Include private keys
+ :type private: bool
+
+ :return: A Deferred which fires with a list of all keys in local db.
+ :rtype: Deferred
+ """
+ return self._openpgp.get_all_keys(private)
+
+ def gen_key(self):
+ """
+ Generate a key bound to the user's address.
+
+ :return: A Deferred which fires with the generated EncryptionKey.
+ :rtype: Deferred
+
+ :raise UnsupportedKeyTypeError: if invalid key type
+ """
+
+ def signal_finished(key):
+ emit_async(
+ catalog.KEYMANAGER_FINISHED_KEY_GENERATION, self._address)
+ return key
+
+ emit_async(catalog.KEYMANAGER_STARTED_KEY_GENERATION, self._address)
+
+ d = self._openpgp.gen_key(self._address)
+ d.addCallback(signal_finished)
+ return d
+
+ #
+ # Setters/getters
+ #
+
+ def _get_token(self):
+ return self._token
+
+ def _set_token(self, token):
+ self._token = token
+
+ token = property(
+ _get_token, _set_token, doc='The session token.')
+
+ def _get_ca_cert_path(self):
+ return self._ca_cert_path
+
+ def _set_ca_cert_path(self, ca_cert_path):
+ self._ca_cert_path = ca_cert_path
+
+ ca_cert_path = property(
+ _get_ca_cert_path, _set_ca_cert_path,
+ doc='The path to the CA certificate.')
+
+ def _get_api_uri(self):
+ return self._api_uri
+
+ def _set_api_uri(self, api_uri):
+ self._api_uri = api_uri
+
+ api_uri = property(
+ _get_api_uri, _set_api_uri, doc='The webapp API URI.')
+
+ def _get_api_version(self):
+ return self._api_version
+
+ def _set_api_version(self, api_version):
+ self._api_version = api_version
+
+ api_version = property(
+ _get_api_version, _set_api_version, doc='The webapp API version.')
+
+ def _get_uid(self):
+ return self._uid
+
+ def _set_uid(self, uid):
+ self._uid = uid
+
+ uid = property(
+ _get_uid, _set_uid, doc='The uid of the user.')
+
+ #
+ # encrypt/decrypt and sign/verify API
+ #
+
+ def encrypt(self, data, address, passphrase=None, sign=None,
+ cipher_algo='AES256', fetch_remote=True):
+ """
+ Encrypt data with the public key bound to address and sign with with
+ the private key bound to sign address.
+
+ :param data: The data to be encrypted.
+ :type data: str
+ :param address: The address to encrypt it for.
+ :type address: str
+ :param passphrase: The passphrase for the secret key used for the
+ signature.
+ :type passphrase: str
+ :param sign: The address to be used for signature.
+ :type sign: str
+ :param cipher_algo: The cipher algorithm to use.
+ :type cipher_algo: str
+ :param fetch_remote: If key is not found in local storage try to fetch
+ from nickserver
+ :type fetch_remote: bool
+
+ :return: A Deferred which fires with the encrypted data as str, or
+ which fails with KeyNotFound if no keys were found neither
+ locally or in keyserver or fails with KeyVersionError if the
+ key format is not supported or fails with EncryptError if
+ failed encrypting for some reason.
+ :rtype: Deferred
+
+ :raise UnsupportedKeyTypeError: if invalid key type
+ """
+
+ @defer.inlineCallbacks
+ def encrypt(keys):
+ pubkey, signkey = keys
+ encrypted = yield self._openpgp.encrypt(
+ data, pubkey, passphrase, sign=signkey,
+ cipher_algo=cipher_algo)
+ if not pubkey.encr_used:
+ pubkey.encr_used = True
+ yield self._openpgp.put_key(pubkey)
+ defer.returnValue(encrypted)
+
+ dpub = self.get_key(address, private=False,
+ fetch_remote=fetch_remote)
+ dpriv = defer.succeed(None)
+ if sign is not None:
+ dpriv = self.get_key(sign, private=True)
+ d = defer.gatherResults([dpub, dpriv], consumeErrors=True)
+ d.addCallbacks(encrypt, self._extract_first_error)
+ return d
+
+ def decrypt(self, data, address, passphrase=None, verify=None,
+ fetch_remote=True):
+ """
+ Decrypt data using private key from address and verify with public key
+ bound to verify address.
+
+ :param data: The data to be decrypted.
+ :type data: str
+ :param address: The address to whom data was encrypted.
+ :type address: str
+ :param passphrase: The passphrase for the secret key used for
+ decryption.
+ :type passphrase: str
+ :param verify: The address to be used for signature.
+ :type verify: str
+ :param fetch_remote: If key for verify not found in local storage try
+ to fetch from nickserver
+ :type fetch_remote: bool
+
+ :return: A Deferred which fires with:
+ * (decripted str, signing key) if validation works
+ * (decripted str, KeyNotFound) if signing key not found
+ * (decripted str, InvalidSignature) if signature is invalid
+ * KeyNotFound failure if private key not found
+ * DecryptError failure if decription failed
+ :rtype: Deferred
+
+ :raise UnsupportedKeyTypeError: if invalid key type
+ """
+
+ @defer.inlineCallbacks
+ def decrypt(keys):
+ pubkey, privkey = keys
+ decrypted, signed = yield self._openpgp.decrypt(
+ data, privkey, passphrase=passphrase, verify=pubkey)
+ if pubkey is None:
+ signature = KeyNotFound(verify)
+ elif signed:
+ signature = pubkey
+ if not pubkey.sign_used:
+ pubkey.sign_used = True
+ yield self._openpgp.put_key(pubkey)
+ defer.returnValue((decrypted, signature))
+ else:
+ signature = InvalidSignature(
+ 'Failed to verify signature with key %s' %
+ (pubkey.fingerprint,))
+ defer.returnValue((decrypted, signature))
+
+ dpriv = self.get_key(address, private=True)
+ dpub = defer.succeed(None)
+ if verify is not None:
+ dpub = self.get_key(verify, private=False,
+ fetch_remote=fetch_remote)
+ dpub.addErrback(lambda f: None if f.check(KeyNotFound) else f)
+ d = defer.gatherResults([dpub, dpriv], consumeErrors=True)
+ d.addCallbacks(decrypt, self._extract_first_error)
+ return d
+
+ def _extract_first_error(self, failure):
+ return failure.value.subFailure
+
+ def sign(self, data, address, digest_algo='SHA512', clearsign=False,
+ detach=True, binary=False):
+ """
+ Sign data with private key bound to address.
+
+ :param data: The data to be signed.
+ :type data: str
+ :param address: The address to be used to sign.
+ :type address: EncryptionKey
+ :param digest_algo: The hash digest to use.
+ :type digest_algo: str
+ :param clearsign: If True, create a cleartext signature.
+ :type clearsign: bool
+ :param detach: If True, create a detached signature.
+ :type detach: bool
+ :param binary: If True, do not ascii armour the output.
+ :type binary: bool
+
+ :return: A Deferred which fires with the signed data as str or fails
+ with KeyNotFound if no key was found neither locally or in
+ keyserver or fails with SignFailed if there was any error
+ signing.
+ :rtype: Deferred
+
+ :raise UnsupportedKeyTypeError: if invalid key type
+ """
+
+ def sign(privkey):
+ return self._openpgp.sign(
+ data, privkey, digest_algo=digest_algo, clearsign=clearsign,
+ detach=detach, binary=binary)
+
+ d = self.get_key(address, private=True)
+ d.addCallback(sign)
+ return d
+
+ def verify(self, data, address, detached_sig=None,
+ fetch_remote=True):
+ """
+ Verify signed data with private key bound to address, eventually using
+ detached_sig.
+
+ :param data: The data to be verified.
+ :type data: str
+ :param address: The address to be used to verify.
+ :type address: EncryptionKey
+ :param detached_sig: A detached signature. If given, C{data} is
+ verified using this detached signature.
+ :type detached_sig: str
+ :param fetch_remote: If key for verify not found in local storage try
+ to fetch from nickserver
+ :type fetch_remote: bool
+
+ :return: A Deferred which fires with the signing EncryptionKey if
+ signature verifies, or which fails with InvalidSignature if
+ signature don't verifies or fails with KeyNotFound if no key
+ was found neither locally or in keyserver.
+ :rtype: Deferred
+
+ :raise UnsupportedKeyTypeError: if invalid key type
+ """
+
+ def verify(pubkey):
+ signed = self._openpgp.verify(
+ data, pubkey, detached_sig=detached_sig)
+ if signed:
+ if not pubkey.sign_used:
+ pubkey.sign_used = True
+ d = self._openpgp.put_key(pubkey)
+ d.addCallback(lambda _: pubkey)
+ return d
+ return pubkey
+ else:
+ raise InvalidSignature(
+ 'Failed to verify signature with key %s' %
+ (pubkey.fingerprint,))
+
+ d = self.get_key(address, private=False,
+ fetch_remote=fetch_remote)
+ d.addCallback(verify)
+ return d
+
+ def delete_key(self, key):
+ """
+ Remove key from storage.
+
+ :param key: The key to be removed.
+ :type key: EncryptionKey
+
+ :return: A Deferred which fires when the key is deleted, or which fails
+ KeyNotFound if the key was not found on local storage.
+ :rtype: Deferred
+
+ :raise UnsupportedKeyTypeError: if invalid key type
+ """
+ return self._openpgp.delete_key(key)
+
+ def put_key(self, key):
+ """
+ Put key bound to address in local storage.
+
+ :param key: The key to be stored
+ :type key: EncryptionKey
+
+ :return: A Deferred which fires when the key is in the storage, or
+ which fails with KeyNotValidUpdate if a key with the same
+ uid exists and the new one is not a valid update for it.
+ :rtype: Deferred
+
+ :raise UnsupportedKeyTypeError: if invalid key type
+ """
+
+ def old_key_not_found(failure):
+ if failure.check(KeyNotFound):
+ return None
+ else:
+ return failure
+
+ def check_upgrade(old_key):
+ if key.private or can_upgrade(key, old_key):
+ return self._openpgp.put_key(key)
+ else:
+ raise KeyNotValidUpgrade(
+ "Key %s can not be upgraded by new key %s"
+ % (old_key.fingerprint, key.fingerprint))
+
+ d = self._openpgp.get_key(key.address, private=key.private)
+ d.addErrback(old_key_not_found)
+ d.addCallback(check_upgrade)
+ return d
+
+ def put_raw_key(self, key, address,
+ validation=ValidationLevels.Weak_Chain):
+ """
+ Put raw key bound to address in local storage.
+
+ :param key: The ascii key to be stored
+ :type key: str
+ :param address: address for which this key will be active
+ :type address: str
+ :param validation: validation level for this key
+ (default: 'Weak_Chain')
+ :type validation: ValidationLevels
+
+ :return: A Deferred which fires when the key is in the storage, or
+ which fails with KeyAddressMismatch if address doesn't match
+ any uid on the key or fails with KeyNotFound if no OpenPGP
+ material was found in key or fails with KeyNotValidUpdate if a
+ key with the same uid exists and the new one is not a valid
+ update for it.
+ :rtype: Deferred
+
+ :raise UnsupportedKeyTypeError: if invalid key type
+ """
+ pubkey, privkey = self._openpgp.parse_key(key, address)
+
+ if pubkey is None:
+ return defer.fail(KeyNotFound(key))
+
+ pubkey.validation = validation
+ d = self.put_key(pubkey)
+ if privkey is not None:
+ d.addCallback(lambda _: self.put_key(privkey))
+ return d
+
+ @defer.inlineCallbacks
+ def fetch_key(self, address, uri, validation=ValidationLevels.Weak_Chain):
+ """
+ Fetch a public key bound to address from the network and put it in
+ local storage.
+
+ :param address: The email address of the key.
+ :type address: str
+ :param uri: The URI of the key.
+ :type uri: str
+ :param validation: validation level for this key
+ (default: 'Weak_Chain')
+ :type validation: ValidationLevels
+
+ :return: A Deferred which fires when the key is in the storage, or
+ which fails with KeyNotFound: if not valid key on uri or fails
+ with KeyAddressMismatch if address doesn't match any uid on
+ the key or fails with KeyNotValidUpdate if a key with the same
+ uid exists and the new one is not a valid update for it.
+ :rtype: Deferred
+
+ :raise UnsupportedKeyTypeError: if invalid key type
+ """
+
+ logger.info("Fetch key for %s from %s" % (address, uri))
+ ascii_content = yield self._get_with_combined_ca_bundle(uri)
+
+ # XXX parse binary keys
+ pubkey, _ = self._openpgp.parse_key(ascii_content, address)
+ if pubkey is None:
+ raise KeyNotFound(uri)
+
+ pubkey.validation = validation
+ yield self.put_key(pubkey)
+
+
+def _split_email(address):
+ """
+ Split username and domain from an email address
+
+ :param address: an email address
+ :type address: str
+
+ :return: username and domain from the email address
+ :rtype: (str, str)
+ """
+ if address.count("@") != 1:
+ return None
+ return address.split("@")
+
+
+def _get_domain(url):
+ """
+ Get the domain from an url
+
+ :param url: an url
+ :type url: str
+
+ :return: the domain part of the url
+ :rtype: str
+ """
+ return urlparse(url).hostname
diff --git a/src/leap/bitmask/keymanager/_version.py b/src/leap/bitmask/keymanager/_version.py
new file mode 100644
index 00000000..b28c6977
--- /dev/null
+++ b/src/leap/bitmask/keymanager/_version.py
@@ -0,0 +1,484 @@
+
+# This file helps to compute a version number in source trees obtained from
+# git-archive tarball (such as those provided by githubs download-from-tag
+# feature). Distribution tarballs (built by setup.py sdist) and build
+# directories (produced by setup.py build) will contain a much shorter file
+# that just contains the computed version number.
+
+# This file is released into the public domain. Generated by
+# versioneer-0.16 (https://github.com/warner/python-versioneer)
+
+"""Git implementation of _version.py."""
+
+import errno
+import os
+import re
+import subprocess
+import sys
+
+
+def get_keywords():
+ """Get the keywords needed to look up the version information."""
+ # these strings will be replaced by git during git-archive.
+ # setup.py/versioneer.py will grep for the variable names, so they must
+ # each be defined on a line of their own. _version.py will just call
+ # get_keywords().
+ git_refnames = "$Format:%d$"
+ git_full = "$Format:%H$"
+ keywords = {"refnames": git_refnames, "full": git_full}
+ return keywords
+
+
+class VersioneerConfig:
+ """Container for Versioneer configuration parameters."""
+
+
+def get_config():
+ """Create, populate and return the VersioneerConfig() object."""
+ # these strings are filled in when 'setup.py versioneer' creates
+ # _version.py
+ cfg = VersioneerConfig()
+ cfg.VCS = "git"
+ cfg.style = "pep440"
+ cfg.tag_prefix = ""
+ cfg.parentdir_prefix = "None"
+ cfg.versionfile_source = "src/leap/keymanager/_version.py"
+ cfg.verbose = False
+ return cfg
+
+
+class NotThisMethod(Exception):
+ """Exception raised if a method is not valid for the current scenario."""
+
+
+LONG_VERSION_PY = {}
+HANDLERS = {}
+
+
+def register_vcs_handler(vcs, method): # decorator
+ """Decorator to mark a method as the handler for a particular VCS."""
+ def decorate(f):
+ """Store f in HANDLERS[vcs][method]."""
+ if vcs not in HANDLERS:
+ HANDLERS[vcs] = {}
+ HANDLERS[vcs][method] = f
+ return f
+ return decorate
+
+
+def run_command(commands, args, cwd=None, verbose=False, hide_stderr=False):
+ """Call the given command(s)."""
+ assert isinstance(commands, list)
+ p = None
+ for c in commands:
+ try:
+ dispcmd = str([c] + args)
+ # remember shell=False, so use git.cmd on windows, not just git
+ p = subprocess.Popen([c] + args, cwd=cwd, stdout=subprocess.PIPE,
+ stderr=(subprocess.PIPE if hide_stderr
+ else None))
+ break
+ except EnvironmentError:
+ e = sys.exc_info()[1]
+ if e.errno == errno.ENOENT:
+ continue
+ if verbose:
+ print("unable to run %s" % dispcmd)
+ print(e)
+ return None
+ else:
+ if verbose:
+ print("unable to find command, tried %s" % (commands,))
+ return None
+ stdout = p.communicate()[0].strip()
+ if sys.version_info[0] >= 3:
+ stdout = stdout.decode()
+ if p.returncode != 0:
+ if verbose:
+ print("unable to run %s (error)" % dispcmd)
+ return None
+ return stdout
+
+
+def versions_from_parentdir(parentdir_prefix, root, verbose):
+ """Try to determine the version from the parent directory name.
+
+ Source tarballs conventionally unpack into a directory that includes
+ both the project name and a version string.
+ """
+ dirname = os.path.basename(root)
+ if not dirname.startswith(parentdir_prefix):
+ if verbose:
+ print("guessing rootdir is '%s', but '%s' doesn't start with "
+ "prefix '%s'" % (root, dirname, parentdir_prefix))
+ raise NotThisMethod("rootdir doesn't start with parentdir_prefix")
+ return {"version": dirname[len(parentdir_prefix):],
+ "full-revisionid": None,
+ "dirty": False, "error": None}
+
+
+@register_vcs_handler("git", "get_keywords")
+def git_get_keywords(versionfile_abs):
+ """Extract version information from the given file."""
+ # the code embedded in _version.py can just fetch the value of these
+ # keywords. When used from setup.py, we don't want to import _version.py,
+ # so we do it with a regexp instead. This function is not used from
+ # _version.py.
+ keywords = {}
+ try:
+ f = open(versionfile_abs, "r")
+ for line in f.readlines():
+ if line.strip().startswith("git_refnames ="):
+ mo = re.search(r'=\s*"(.*)"', line)
+ if mo:
+ keywords["refnames"] = mo.group(1)
+ if line.strip().startswith("git_full ="):
+ mo = re.search(r'=\s*"(.*)"', line)
+ if mo:
+ keywords["full"] = mo.group(1)
+ f.close()
+ except EnvironmentError:
+ pass
+ return keywords
+
+
+@register_vcs_handler("git", "keywords")
+def git_versions_from_keywords(keywords, tag_prefix, verbose):
+ """Get version information from git keywords."""
+ if not keywords:
+ raise NotThisMethod("no keywords at all, weird")
+ refnames = keywords["refnames"].strip()
+ if refnames.startswith("$Format"):
+ if verbose:
+ print("keywords are unexpanded, not using")
+ raise NotThisMethod("unexpanded keywords, not a git-archive tarball")
+ refs = set([r.strip() for r in refnames.strip("()").split(",")])
+ # starting in git-1.8.3, tags are listed as "tag: foo-1.0" instead of
+ # just "foo-1.0". If we see a "tag: " prefix, prefer those.
+ TAG = "tag: "
+ tags = set([r[len(TAG):] for r in refs if r.startswith(TAG)])
+ if not tags:
+ # Either we're using git < 1.8.3, or there really are no tags. We use
+ # a heuristic: assume all version tags have a digit. The old git %d
+ # expansion behaves like git log --decorate=short and strips out the
+ # refs/heads/ and refs/tags/ prefixes that would let us distinguish
+ # between branches and tags. By ignoring refnames without digits, we
+ # filter out many common branch names like "release" and
+ # "stabilization", as well as "HEAD" and "master".
+ tags = set([r for r in refs if re.search(r'\d', r)])
+ if verbose:
+ print("discarding '%s', no digits" % ",".join(refs-tags))
+ if verbose:
+ print("likely tags: %s" % ",".join(sorted(tags)))
+ for ref in sorted(tags):
+ # sorting will prefer e.g. "2.0" over "2.0rc1"
+ if ref.startswith(tag_prefix):
+ r = ref[len(tag_prefix):]
+ if verbose:
+ print("picking %s" % r)
+ return {"version": r,
+ "full-revisionid": keywords["full"].strip(),
+ "dirty": False, "error": None
+ }
+ # no suitable tags, so version is "0+unknown", but full hex is still there
+ if verbose:
+ print("no suitable tags, using unknown + full revision id")
+ return {"version": "0+unknown",
+ "full-revisionid": keywords["full"].strip(),
+ "dirty": False, "error": "no suitable tags"}
+
+
+@register_vcs_handler("git", "pieces_from_vcs")
+def git_pieces_from_vcs(tag_prefix, root, verbose, run_command=run_command):
+ """Get version from 'git describe' in the root of the source tree.
+
+ This only gets called if the git-archive 'subst' keywords were *not*
+ expanded, and _version.py hasn't already been rewritten with a short
+ version string, meaning we're inside a checked out source tree.
+ """
+ if not os.path.exists(os.path.join(root, ".git")):
+ if verbose:
+ print("no .git in %s" % root)
+ raise NotThisMethod("no .git directory")
+
+ GITS = ["git"]
+ if sys.platform == "win32":
+ GITS = ["git.cmd", "git.exe"]
+ # if there is a tag matching tag_prefix, this yields TAG-NUM-gHEX[-dirty]
+ # if there isn't one, this yields HEX[-dirty] (no NUM)
+ describe_out = run_command(GITS, ["describe", "--tags", "--dirty",
+ "--always", "--long",
+ "--match", "%s*" % tag_prefix],
+ cwd=root)
+ # --long was added in git-1.5.5
+ if describe_out is None:
+ raise NotThisMethod("'git describe' failed")
+ describe_out = describe_out.strip()
+ full_out = run_command(GITS, ["rev-parse", "HEAD"], cwd=root)
+ if full_out is None:
+ raise NotThisMethod("'git rev-parse' failed")
+ full_out = full_out.strip()
+
+ pieces = {}
+ pieces["long"] = full_out
+ pieces["short"] = full_out[:7] # maybe improved later
+ pieces["error"] = None
+
+ # parse describe_out. It will be like TAG-NUM-gHEX[-dirty] or HEX[-dirty]
+ # TAG might have hyphens.
+ git_describe = describe_out
+
+ # look for -dirty suffix
+ dirty = git_describe.endswith("-dirty")
+ pieces["dirty"] = dirty
+ if dirty:
+ git_describe = git_describe[:git_describe.rindex("-dirty")]
+
+ # now we have TAG-NUM-gHEX or HEX
+
+ if "-" in git_describe:
+ # TAG-NUM-gHEX
+ mo = re.search(r'^(.+)-(\d+)-g([0-9a-f]+)$', git_describe)
+ if not mo:
+ # unparseable. Maybe git-describe is misbehaving?
+ pieces["error"] = ("unable to parse git-describe output: '%s'"
+ % describe_out)
+ return pieces
+
+ # tag
+ full_tag = mo.group(1)
+ if not full_tag.startswith(tag_prefix):
+ if verbose:
+ fmt = "tag '%s' doesn't start with prefix '%s'"
+ print(fmt % (full_tag, tag_prefix))
+ pieces["error"] = ("tag '%s' doesn't start with prefix '%s'"
+ % (full_tag, tag_prefix))
+ return pieces
+ pieces["closest-tag"] = full_tag[len(tag_prefix):]
+
+ # distance: number of commits since tag
+ pieces["distance"] = int(mo.group(2))
+
+ # commit: short hex revision ID
+ pieces["short"] = mo.group(3)
+
+ else:
+ # HEX: no tags
+ pieces["closest-tag"] = None
+ count_out = run_command(GITS, ["rev-list", "HEAD", "--count"],
+ cwd=root)
+ pieces["distance"] = int(count_out) # total number of commits
+
+ return pieces
+
+
+def plus_or_dot(pieces):
+ """Return a + if we don't already have one, else return a ."""
+ if "+" in pieces.get("closest-tag", ""):
+ return "."
+ return "+"
+
+
+def render_pep440(pieces):
+ """Build up version string, with post-release "local version identifier".
+
+ Our goal: TAG[+DISTANCE.gHEX[.dirty]] . Note that if you
+ get a tagged build and then dirty it, you'll get TAG+0.gHEX.dirty
+
+ Exceptions:
+ 1: no tags. git_describe was just HEX. 0+untagged.DISTANCE.gHEX[.dirty]
+ """
+ if pieces["closest-tag"]:
+ rendered = pieces["closest-tag"]
+ if pieces["distance"] or pieces["dirty"]:
+ rendered += plus_or_dot(pieces)
+ rendered += "%d.g%s" % (pieces["distance"], pieces["short"])
+ if pieces["dirty"]:
+ rendered += ".dirty"
+ else:
+ # exception #1
+ rendered = "0+untagged.%d.g%s" % (pieces["distance"],
+ pieces["short"])
+ if pieces["dirty"]:
+ rendered += ".dirty"
+ return rendered
+
+
+def render_pep440_pre(pieces):
+ """TAG[.post.devDISTANCE] -- No -dirty.
+
+ Exceptions:
+ 1: no tags. 0.post.devDISTANCE
+ """
+ if pieces["closest-tag"]:
+ rendered = pieces["closest-tag"]
+ if pieces["distance"]:
+ rendered += ".post.dev%d" % pieces["distance"]
+ else:
+ # exception #1
+ rendered = "0.post.dev%d" % pieces["distance"]
+ return rendered
+
+
+def render_pep440_post(pieces):
+ """TAG[.postDISTANCE[.dev0]+gHEX] .
+
+ The ".dev0" means dirty. Note that .dev0 sorts backwards
+ (a dirty tree will appear "older" than the corresponding clean one),
+ but you shouldn't be releasing software with -dirty anyways.
+
+ Exceptions:
+ 1: no tags. 0.postDISTANCE[.dev0]
+ """
+ if pieces["closest-tag"]:
+ rendered = pieces["closest-tag"]
+ if pieces["distance"] or pieces["dirty"]:
+ rendered += ".post%d" % pieces["distance"]
+ if pieces["dirty"]:
+ rendered += ".dev0"
+ rendered += plus_or_dot(pieces)
+ rendered += "g%s" % pieces["short"]
+ else:
+ # exception #1
+ rendered = "0.post%d" % pieces["distance"]
+ if pieces["dirty"]:
+ rendered += ".dev0"
+ rendered += "+g%s" % pieces["short"]
+ return rendered
+
+
+def render_pep440_old(pieces):
+ """TAG[.postDISTANCE[.dev0]] .
+
+ The ".dev0" means dirty.
+
+ Eexceptions:
+ 1: no tags. 0.postDISTANCE[.dev0]
+ """
+ if pieces["closest-tag"]:
+ rendered = pieces["closest-tag"]
+ if pieces["distance"] or pieces["dirty"]:
+ rendered += ".post%d" % pieces["distance"]
+ if pieces["dirty"]:
+ rendered += ".dev0"
+ else:
+ # exception #1
+ rendered = "0.post%d" % pieces["distance"]
+ if pieces["dirty"]:
+ rendered += ".dev0"
+ return rendered
+
+
+def render_git_describe(pieces):
+ """TAG[-DISTANCE-gHEX][-dirty].
+
+ Like 'git describe --tags --dirty --always'.
+
+ Exceptions:
+ 1: no tags. HEX[-dirty] (note: no 'g' prefix)
+ """
+ if pieces["closest-tag"]:
+ rendered = pieces["closest-tag"]
+ if pieces["distance"]:
+ rendered += "-%d-g%s" % (pieces["distance"], pieces["short"])
+ else:
+ # exception #1
+ rendered = pieces["short"]
+ if pieces["dirty"]:
+ rendered += "-dirty"
+ return rendered
+
+
+def render_git_describe_long(pieces):
+ """TAG-DISTANCE-gHEX[-dirty].
+
+ Like 'git describe --tags --dirty --always -long'.
+ The distance/hash is unconditional.
+
+ Exceptions:
+ 1: no tags. HEX[-dirty] (note: no 'g' prefix)
+ """
+ if pieces["closest-tag"]:
+ rendered = pieces["closest-tag"]
+ rendered += "-%d-g%s" % (pieces["distance"], pieces["short"])
+ else:
+ # exception #1
+ rendered = pieces["short"]
+ if pieces["dirty"]:
+ rendered += "-dirty"
+ return rendered
+
+
+def render(pieces, style):
+ """Render the given version pieces into the requested style."""
+ if pieces["error"]:
+ return {"version": "unknown",
+ "full-revisionid": pieces.get("long"),
+ "dirty": None,
+ "error": pieces["error"]}
+
+ if not style or style == "default":
+ style = "pep440" # the default
+
+ if style == "pep440":
+ rendered = render_pep440(pieces)
+ elif style == "pep440-pre":
+ rendered = render_pep440_pre(pieces)
+ elif style == "pep440-post":
+ rendered = render_pep440_post(pieces)
+ elif style == "pep440-old":
+ rendered = render_pep440_old(pieces)
+ elif style == "git-describe":
+ rendered = render_git_describe(pieces)
+ elif style == "git-describe-long":
+ rendered = render_git_describe_long(pieces)
+ else:
+ raise ValueError("unknown style '%s'" % style)
+
+ return {"version": rendered, "full-revisionid": pieces["long"],
+ "dirty": pieces["dirty"], "error": None}
+
+
+def get_versions():
+ """Get version information or return default if unable to do so."""
+ # I am in _version.py, which lives at ROOT/VERSIONFILE_SOURCE. If we have
+ # __file__, we can work backwards from there to the root. Some
+ # py2exe/bbfreeze/non-CPython implementations don't do __file__, in which
+ # case we can only use expanded keywords.
+
+ cfg = get_config()
+ verbose = cfg.verbose
+
+ try:
+ return git_versions_from_keywords(get_keywords(), cfg.tag_prefix,
+ verbose)
+ except NotThisMethod:
+ pass
+
+ try:
+ root = os.path.realpath(__file__)
+ # versionfile_source is the relative path from the top of the source
+ # tree (where the .git directory might live) to this file. Invert
+ # this to find the root from __file__.
+ for i in cfg.versionfile_source.split('/'):
+ root = os.path.dirname(root)
+ except NameError:
+ return {"version": "0+unknown", "full-revisionid": None,
+ "dirty": None,
+ "error": "unable to find root of source tree"}
+
+ try:
+ pieces = git_pieces_from_vcs(cfg.tag_prefix, root, verbose)
+ return render(pieces, cfg.style)
+ except NotThisMethod:
+ pass
+
+ try:
+ if cfg.parentdir_prefix:
+ return versions_from_parentdir(cfg.parentdir_prefix, root, verbose)
+ except NotThisMethod:
+ pass
+
+ return {"version": "0+unknown", "full-revisionid": None,
+ "dirty": None,
+ "error": "unable to compute version"}
diff --git a/src/leap/bitmask/keymanager/documents.py b/src/leap/bitmask/keymanager/documents.py
new file mode 100644
index 00000000..2ed53769
--- /dev/null
+++ b/src/leap/bitmask/keymanager/documents.py
@@ -0,0 +1,101 @@
+# -*- coding: utf-8 -*-
+# documents.py
+# Copyright (C) 2013-2016 LEAP
+#
+# 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/>.
+"""
+Soledad documents
+"""
+from twisted.internet import defer
+from leap.common.check import leap_assert
+
+#
+# Dictionary keys used for storing cryptographic keys.
+#
+
+KEY_VERSION_KEY = 'version'
+KEY_UIDS_KEY = 'uids'
+KEY_ADDRESS_KEY = 'address'
+KEY_TYPE_KEY = 'type'
+KEY_FINGERPRINT_KEY = 'fingerprint'
+KEY_DATA_KEY = 'key_data'
+KEY_PRIVATE_KEY = 'private'
+KEY_LENGTH_KEY = 'length'
+KEY_EXPIRY_DATE_KEY = 'expiry_date'
+KEY_LAST_AUDITED_AT_KEY = 'last_audited_at'
+KEY_REFRESHED_AT_KEY = 'refreshed_at'
+KEY_VALIDATION_KEY = 'validation'
+KEY_ENCR_USED_KEY = 'encr_used'
+KEY_SIGN_USED_KEY = 'sign_used'
+KEY_TAGS_KEY = 'tags'
+
+
+#
+# Key storage constants
+#
+
+KEYMANAGER_KEY_TAG = 'keymanager-key'
+KEYMANAGER_ACTIVE_TAG = 'keymanager-active'
+KEYMANAGER_ACTIVE_TYPE = '-active'
+
+# Version of the Soledad Document schema,
+# it should be bumped each time the document format changes
+KEYMANAGER_DOC_VERSION = 1
+
+
+#
+# key indexing constants.
+#
+
+TAGS_PRIVATE_INDEX = 'by-tags-private'
+TYPE_FINGERPRINT_PRIVATE_INDEX = 'by-type-fingerprint-private'
+TYPE_ADDRESS_PRIVATE_INDEX = 'by-type-address-private'
+INDEXES = {
+ TAGS_PRIVATE_INDEX: [
+ KEY_TAGS_KEY,
+ 'bool(%s)' % KEY_PRIVATE_KEY,
+ ],
+ TYPE_FINGERPRINT_PRIVATE_INDEX: [
+ KEY_TYPE_KEY,
+ KEY_FINGERPRINT_KEY,
+ 'bool(%s)' % KEY_PRIVATE_KEY,
+ ],
+ TYPE_ADDRESS_PRIVATE_INDEX: [
+ KEY_TYPE_KEY,
+ KEY_ADDRESS_KEY,
+ 'bool(%s)' % KEY_PRIVATE_KEY,
+ ]
+}
+
+
+@defer.inlineCallbacks
+def init_indexes(soledad):
+ """
+ Initialize the database indexes.
+ """
+ leap_assert(soledad is not None,
+ "Cannot init indexes with null soledad")
+
+ indexes = yield soledad.list_indexes()
+ db_indexes = dict(indexes)
+ # Loop through the indexes we expect to find.
+ for name, expression in INDEXES.items():
+ if name not in db_indexes:
+ # The index does not yet exist.
+ yield soledad.create_index(name, *expression)
+ elif expression != db_indexes[name]:
+ # The index exists but the definition is not what expected,
+ # so we delete it and add the proper index expression.
+ yield soledad.delete_index(name)
+ yield soledad.create_index(name, *expression)
diff --git a/src/leap/bitmask/keymanager/errors.py b/src/leap/bitmask/keymanager/errors.py
new file mode 100644
index 00000000..dfff3936
--- /dev/null
+++ b/src/leap/bitmask/keymanager/errors.py
@@ -0,0 +1,119 @@
+# -*- coding: utf-8 -*-
+# errors.py
+# Copyright (C) 2013 LEAP
+#
+# 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/>.
+
+
+"""
+Errors and exceptions used by the Key Manager.
+"""
+
+
+class KeyNotFound(Exception):
+ """
+ Raised when key was no found on keyserver.
+ """
+ pass
+
+
+class KeyVersionError(KeyNotFound):
+ """
+ Raised when key was found in the keyring but the version is not supported.
+
+ It will usually mean that it was created by a newer version of KeyManager.
+ """
+ pass
+
+
+class KeyAlreadyExists(Exception):
+ """
+ Raised when attempted to create a key that already exists.
+ """
+ pass
+
+
+class KeyAttributesDiffer(Exception):
+ """
+ Raised when trying to delete a key but the stored key differs from the key
+ passed to the delete_key() method.
+ """
+ pass
+
+
+class NoPasswordGiven(Exception):
+ """
+ Raised when trying to perform some action that needs a password without
+ providing one.
+ """
+ pass
+
+
+class InvalidSignature(Exception):
+ """
+ Raised when signature could not be verified.
+ """
+ pass
+
+
+class EncryptError(Exception):
+ """
+ Raised upon failures of encryption.
+ """
+ pass
+
+
+class DecryptError(Exception):
+ """
+ Raised upon failures of decryption.
+ """
+ pass
+
+
+class GPGError(Exception):
+ """
+ Raised upon failures of encryption/decryption.
+ """
+ pass
+
+
+class SignFailed(Exception):
+ """
+ Raised when failed to sign.
+ """
+ pass
+
+
+class KeyAddressMismatch(Exception):
+ """
+ A mismatch between addresses.
+ """
+
+
+class KeyFingerprintMismatch(Exception):
+ """
+ A mismatch between fingerprints.
+ """
+
+
+class KeyNotValidUpgrade(Exception):
+ """
+ Already existing key can not be upgraded with the new key
+ """
+
+
+class UnsupportedKeyTypeError(Exception):
+ """
+ Invalid key type
+ """
diff --git a/src/leap/bitmask/keymanager/keys.py b/src/leap/bitmask/keymanager/keys.py
new file mode 100644
index 00000000..91ecf3ac
--- /dev/null
+++ b/src/leap/bitmask/keymanager/keys.py
@@ -0,0 +1,290 @@
+# -*- coding: utf-8 -*-
+# keys.py
+# Copyright (C) 2013-2016 LEAP
+#
+# 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/>.
+"""
+Abstact key type and encryption scheme representations.
+"""
+
+
+import json
+import logging
+import re
+import time
+
+from datetime import datetime
+
+from leap.keymanager import errors
+from leap.keymanager.wrapper import TempGPGWrapper
+from leap.keymanager.validation import ValidationLevels
+from leap.keymanager import documents as doc
+
+logger = logging.getLogger(__name__)
+
+
+#
+# Key handling utilities
+#
+
+def is_address(address):
+ """
+ Return whether the given C{address} is in the form user@provider.
+
+ :param address: The address to be tested.
+ :type address: str
+ :return: Whether C{address} is in the form user@provider.
+ :rtype: bool
+ """
+ return bool(re.match('[\w.-]+@[\w.-]+', address))
+
+
+def build_key_from_dict(key, active=None):
+ """
+ Build an OpenPGPKey key based on info in C{kdict}.
+
+ :param key: Dictionary with key data.
+ :type key: dict
+ :param active: Dictionary with active data.
+ :type active: dict
+ :return: An instance of the key.
+ :rtype: C{kClass}
+ """
+ address = None
+ validation = ValidationLevels.Weak_Chain
+ last_audited_at = None
+ encr_used = False
+ sign_used = False
+
+ if active:
+ address = active[doc.KEY_ADDRESS_KEY]
+ try:
+ validation = ValidationLevels.get(active[doc.KEY_VALIDATION_KEY])
+ except ValueError:
+ logger.error("Not valid validation level (%s) for key %s",
+ (active[doc.KEY_VALIDATION_KEY],
+ active[doc.KEY_FINGERPRINT_KEY]))
+ last_audited_at = _to_datetime(active[doc.KEY_LAST_AUDITED_AT_KEY])
+ encr_used = active[doc.KEY_ENCR_USED_KEY]
+ sign_used = active[doc.KEY_SIGN_USED_KEY]
+
+ expiry_date = _to_datetime(key[doc.KEY_EXPIRY_DATE_KEY])
+ refreshed_at = _to_datetime(key[doc.KEY_REFRESHED_AT_KEY])
+
+ return OpenPGPKey(
+ address=address,
+ uids=key[doc.KEY_UIDS_KEY],
+ fingerprint=key[doc.KEY_FINGERPRINT_KEY],
+ key_data=key[doc.KEY_DATA_KEY],
+ private=key[doc.KEY_PRIVATE_KEY],
+ length=key[doc.KEY_LENGTH_KEY],
+ expiry_date=expiry_date,
+ last_audited_at=last_audited_at,
+ refreshed_at=refreshed_at,
+ validation=validation,
+ encr_used=encr_used,
+ sign_used=sign_used,
+ )
+
+
+def _to_datetime(unix_time):
+ if unix_time != 0:
+ return datetime.fromtimestamp(unix_time)
+ else:
+ return None
+
+
+def _to_unix_time(date):
+ if date is not None:
+ return int(time.mktime(date.timetuple()))
+ else:
+ return 0
+
+
+class OpenPGPKey(object):
+ """
+ Base class for OpenPGP keys.
+ """
+
+ __slots__ = ('address', 'uids', 'fingerprint', 'key_data',
+ 'private', 'length', 'expiry_date', 'validation',
+ 'last_audited_at', 'refreshed_at',
+ 'encr_used', 'sign_used', '_index', '_gpgbinary')
+
+ def __init__(self, address=None, gpgbinary=None, uids=[], fingerprint="",
+ key_data="", private=False, length=0, expiry_date=None,
+ validation=ValidationLevels.Weak_Chain, last_audited_at=None,
+ refreshed_at=None, encr_used=False, sign_used=False):
+ self._gpgbinary = gpgbinary
+ self.address = address
+ if not uids and address:
+ self.uids = [address]
+ else:
+ self.uids = uids
+ self.fingerprint = fingerprint
+ self.key_data = key_data
+ self.private = private
+ self.length = length
+ self.expiry_date = expiry_date
+
+ self.validation = validation
+ self.last_audited_at = last_audited_at
+ self.refreshed_at = refreshed_at
+ self.encr_used = encr_used
+ self.sign_used = sign_used
+ self._index = len(self.__slots__)
+
+ @property
+ def signatures(self):
+ """
+ Get the key signatures
+
+ :return: the key IDs that have signed the key
+ :rtype: list(str)
+ """
+ with TempGPGWrapper(keys=[self], gpgbinary=self._gpgbinary) as gpg:
+ res = gpg.list_sigs(self.fingerprint)
+ for uid, sigs in res.sigs.iteritems():
+ if parse_address(uid) in self.uids:
+ return sigs
+
+ return []
+
+ def merge(self, newkey):
+ if newkey.fingerprint != self.fingerprint:
+ logger.critical(
+ "Can't put a key whith the same key_id and different "
+ "fingerprint: %s, %s"
+ % (newkey.fingerprint, self.fingerprint))
+ raise errors.KeyFingerprintMismatch(newkey.fingerprint)
+
+ with TempGPGWrapper(gpgbinary=self._gpgbinary) as gpg:
+ gpg.import_keys(self.key_data)
+ gpg.import_keys(newkey.key_data)
+ gpgkey = gpg.list_keys(secret=newkey.private).pop()
+
+ if gpgkey['expires']:
+ self.expiry_date = datetime.fromtimestamp(
+ int(gpgkey['expires']))
+ else:
+ self.expiry_date = None
+
+ self.uids = []
+ for uid in gpgkey['uids']:
+ self.uids.append(parse_address(uid))
+
+ self.length = int(gpgkey['length'])
+ self.key_data = gpg.export_keys(gpgkey['fingerprint'],
+ secret=self.private)
+
+ if newkey.validation > self.validation:
+ self.validation = newkey.validation
+ if newkey.last_audited_at > self.last_audited_at:
+ self.validation = newkey.last_audited_at
+ self.encr_used = newkey.encr_used or self.encr_used
+ self.sign_used = newkey.sign_used or self.sign_used
+ self.refreshed_at = datetime.now()
+
+ def get_json(self):
+ """
+ Return a JSON string describing this key.
+
+ :return: The JSON string describing this key.
+ :rtype: str
+ """
+ expiry_date = _to_unix_time(self.expiry_date)
+ refreshed_at = _to_unix_time(self.refreshed_at)
+
+ return json.dumps({
+ doc.KEY_UIDS_KEY: self.uids,
+ doc.KEY_TYPE_KEY: self.__class__.__name__,
+ doc.KEY_FINGERPRINT_KEY: self.fingerprint,
+ doc.KEY_DATA_KEY: self.key_data,
+ doc.KEY_PRIVATE_KEY: self.private,
+ doc.KEY_LENGTH_KEY: self.length,
+ doc.KEY_EXPIRY_DATE_KEY: expiry_date,
+ doc.KEY_REFRESHED_AT_KEY: refreshed_at,
+ doc.KEY_VERSION_KEY: doc.KEYMANAGER_DOC_VERSION,
+ doc.KEY_TAGS_KEY: [doc.KEYMANAGER_KEY_TAG],
+ })
+
+ def get_active_json(self):
+ """
+ Return a JSON string describing this key.
+
+ :return: The JSON string describing this key.
+ :rtype: str
+ """
+ last_audited_at = _to_unix_time(self.last_audited_at)
+
+ return json.dumps({
+ doc.KEY_ADDRESS_KEY: self.address,
+ doc.KEY_TYPE_KEY: (self.__class__.__name__ +
+ doc.KEYMANAGER_ACTIVE_TYPE),
+ doc.KEY_FINGERPRINT_KEY: self.fingerprint,
+ doc.KEY_PRIVATE_KEY: self.private,
+ doc.KEY_VALIDATION_KEY: str(self.validation),
+ doc.KEY_LAST_AUDITED_AT_KEY: last_audited_at,
+ doc.KEY_ENCR_USED_KEY: self.encr_used,
+ doc.KEY_SIGN_USED_KEY: self.sign_used,
+ doc.KEY_VERSION_KEY: doc.KEYMANAGER_DOC_VERSION,
+ doc.KEY_TAGS_KEY: [doc.KEYMANAGER_ACTIVE_TAG],
+ })
+
+ def next(self):
+ if self._index == 0:
+ self._index = len(self.__slots__)
+ raise StopIteration
+
+ self._index -= 1
+ key = self.__slots__[self._index]
+
+ if key.startswith('_'):
+ return self.next()
+
+ value = getattr(self, key)
+ if key == "validation":
+ value = str(value)
+ elif key in ["expiry_date", "last_audited_at", "refreshed_at"]:
+ value = str(value)
+ return key, value
+
+ def __iter__(self):
+ return self
+
+ def __repr__(self):
+ """
+ Representation of this class
+ """
+ return u"<%s 0x%s (%s - %s)>" % (
+ self.__class__.__name__,
+ self.fingerprint,
+ self.address,
+ "priv" if self.private else "publ")
+
+
+def parse_address(address):
+ """
+ Remove name, '<', '>' and the identity suffix after the '+' until the '@'
+ e.g.: test_user+something@provider.com becomes test_user@provider.com
+ since the key belongs to the identity without the '+' suffix.
+
+ :type address: str
+ :rtype: str
+ """
+ mail_regex = '(.*<)?([\w.-]+)(\+.*)?(@[\w.-]+)(>.*)?'
+ match = re.match(mail_regex, address)
+ if match is None:
+ return None
+ return ''.join(match.group(2, 4))
diff --git a/src/leap/bitmask/keymanager/migrator.py b/src/leap/bitmask/keymanager/migrator.py
new file mode 100644
index 00000000..c73da2ee
--- /dev/null
+++ b/src/leap/bitmask/keymanager/migrator.py
@@ -0,0 +1,167 @@
+# -*- coding: utf-8 -*-
+# migrator.py
+# Copyright (C) 2015 LEAP
+#
+# 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/>.
+
+"""
+Document migrator
+"""
+# XXX: versioning has being added 12/2015 when keymanager was not
+# much in use in the wild. We can probably drop support for
+# keys without version at some point.
+
+
+from collections import namedtuple
+from twisted.internet.defer import gatherResults, succeed
+
+from leap.keymanager import documents as doc
+from leap.keymanager.validation import ValidationLevels
+
+
+KEY_ID_KEY = 'key_id'
+
+KeyDocs = namedtuple("KeyDocs", ['key', 'active'])
+
+
+class KeyDocumentsMigrator(object):
+ """
+ Migrate old KeyManager Soledad Documents to the newest schema
+ """
+
+ def __init__(self, soledad):
+ self._soledad = soledad
+
+ def migrate(self):
+ deferred_public = self._get_docs(private=False)
+ deferred_public.addCallback(self._migrate_docs)
+
+ deferred_private = self._get_docs(private=True)
+ deferred_private.addCallback(self._migrate_docs)
+
+ return gatherResults([deferred_public, deferred_private])
+
+ def _get_docs(self, private=False):
+ private_value = '1' if private else '0'
+
+ deferred_keys = self._soledad.get_from_index(
+ doc.TAGS_PRIVATE_INDEX,
+ doc.KEYMANAGER_KEY_TAG,
+ private_value)
+ deferred_active = self._soledad.get_from_index(
+ doc.TAGS_PRIVATE_INDEX,
+ doc.KEYMANAGER_ACTIVE_TAG,
+ private_value)
+ return gatherResults([deferred_keys, deferred_active])
+
+ def _migrate_docs(self, (key_docs, active_docs)):
+ def update_keys(keys):
+ deferreds = []
+ for key_id in keys:
+ key = keys[key_id].key
+ actives = keys[key_id].active
+
+ d = self._migrate_actives(key, actives)
+ deferreds.append(d)
+
+ d = self._migrate_key(key)
+ deferreds.append(d)
+ return gatherResults(deferreds)
+
+ d = self._buildKeyDict(key_docs, active_docs)
+ d.addCallback(lambda keydict: self._filter_outdated(keydict))
+ d.addCallback(update_keys)
+
+ def _buildKeyDict(self, keys, actives):
+ keydict = {
+ fp2id(key.content[doc.KEY_FINGERPRINT_KEY]): KeyDocs(key, [])
+ for key in keys}
+
+ deferreds = []
+ for active in actives:
+ if KEY_ID_KEY in active.content:
+ key_id = active.content[KEY_ID_KEY]
+ if key_id not in keydict:
+ d = self._soledad.delete_doc(active)
+ deferreds.append(d)
+ continue
+ keydict[key_id].active.append(active)
+
+ d = gatherResults(deferreds)
+ d.addCallback(lambda _: keydict)
+ return d
+
+ def _filter_outdated(self, keydict):
+ outdated = {}
+ for key_id, docs in keydict.items():
+ if ((docs.key and doc.KEY_VERSION_KEY not in docs.key.content) or
+ docs.active):
+ outdated[key_id] = docs
+ return outdated
+
+ def _migrate_actives(self, key, actives):
+ if not key:
+ deferreds = []
+ for active in actives:
+ d = self._soledad.delete_doc(active)
+ deferreds.append(d)
+ return gatherResults(deferreds)
+
+ validation = str(ValidationLevels.Weak_Chain)
+ last_audited = 0
+ encr_used = False
+ sign_used = False
+ fingerprint = key.content[doc.KEY_FINGERPRINT_KEY]
+ if len(actives) == 1 and doc.KEY_VERSION_KEY not in key.content:
+ # we can preserve the validation of the key if there is only one
+ # active address for the key
+ validation = key.content[doc.KEY_VALIDATION_KEY]
+ last_audited = key.content[doc.KEY_LAST_AUDITED_AT_KEY]
+ encr_used = key.content[doc.KEY_ENCR_USED_KEY]
+ sign_used = key.content[doc.KEY_SIGN_USED_KEY]
+
+ deferreds = []
+ for active in actives:
+ if doc.KEY_VERSION_KEY in active.content:
+ continue
+
+ active.content[doc.KEY_VERSION_KEY] = doc.KEYMANAGER_DOC_VERSION
+ active.content[doc.KEY_FINGERPRINT_KEY] = fingerprint
+ active.content[doc.KEY_VALIDATION_KEY] = validation
+ active.content[doc.KEY_LAST_AUDITED_AT_KEY] = last_audited
+ active.content[doc.KEY_ENCR_USED_KEY] = encr_used
+ active.content[doc.KEY_SIGN_USED_KEY] = sign_used
+ del active.content[KEY_ID_KEY]
+ d = self._soledad.put_doc(active)
+ deferreds.append(d)
+ return gatherResults(deferreds)
+
+ def _migrate_key(self, key):
+ if not key or doc.KEY_VERSION_KEY in key.content:
+ return succeed(None)
+
+ key.content[doc.KEY_VERSION_KEY] = doc.KEYMANAGER_DOC_VERSION
+ key.content[doc.KEY_UIDS_KEY] = key.content[doc.KEY_ADDRESS_KEY]
+ del key.content[doc.KEY_ADDRESS_KEY]
+ del key.content[KEY_ID_KEY]
+ del key.content[doc.KEY_VALIDATION_KEY]
+ del key.content[doc.KEY_LAST_AUDITED_AT_KEY]
+ del key.content[doc.KEY_ENCR_USED_KEY]
+ del key.content[doc.KEY_SIGN_USED_KEY]
+ return self._soledad.put_doc(key)
+
+
+def fp2id(fingerprint):
+ KEY_ID_LENGTH = 16
+ return fingerprint[-KEY_ID_LENGTH:]
diff --git a/src/leap/bitmask/keymanager/openpgp.py b/src/leap/bitmask/keymanager/openpgp.py
new file mode 100644
index 00000000..31c13df1
--- /dev/null
+++ b/src/leap/bitmask/keymanager/openpgp.py
@@ -0,0 +1,881 @@
+# -*- coding: utf-8 -*-
+# openpgp.py
+# Copyright (C) 2013-2016 LEAP
+#
+# 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/>.
+"""
+Infrastructure for using OpenPGP keys in Key Manager.
+"""
+import logging
+import os
+import re
+import tempfile
+import traceback
+import io
+
+
+from datetime import datetime
+from multiprocessing import cpu_count
+from gnupg.gnupg import GPGUtilities
+from twisted.internet import defer
+from twisted.internet.threads import deferToThread
+
+from leap.common.check import leap_assert, leap_assert_type, leap_check
+from leap.keymanager import errors
+from leap.keymanager.wrapper import TempGPGWrapper
+from leap.keymanager.keys import (
+ OpenPGPKey,
+ is_address,
+ parse_address,
+ build_key_from_dict,
+)
+from leap.keymanager.documents import (
+ init_indexes,
+ TAGS_PRIVATE_INDEX,
+ TYPE_FINGERPRINT_PRIVATE_INDEX,
+ TYPE_ADDRESS_PRIVATE_INDEX,
+ KEY_UIDS_KEY,
+ KEY_FINGERPRINT_KEY,
+ KEY_PRIVATE_KEY,
+ KEY_REFRESHED_AT_KEY,
+ KEY_SIGN_USED_KEY,
+ KEY_ENCR_USED_KEY,
+ KEY_ADDRESS_KEY,
+ KEY_TYPE_KEY,
+ KEY_VERSION_KEY,
+ KEYMANAGER_DOC_VERSION,
+ KEYMANAGER_ACTIVE_TYPE,
+ KEYMANAGER_KEY_TAG,
+ KEYMANAGER_ACTIVE_TAG,
+)
+
+
+logger = logging.getLogger(__name__)
+
+
+#
+# A temporary GPG keyring wrapped to provide OpenPGP functionality.
+#
+
+# This function will be used to call blocking GPG functions outside
+# of Twisted reactor and match the concurrent calls to the amount of CPU cores
+cpu_core_semaphore = defer.DeferredSemaphore(cpu_count())
+
+
+def from_thread(func, *args, **kwargs):
+ call = lambda: deferToThread(func, *args, **kwargs)
+ return cpu_core_semaphore.run(call)
+
+
+#
+# The OpenPGP wrapper
+#
+
+class OpenPGPScheme(object):
+ """
+ A wrapper for OpenPGP keys management and use (encryption, decyption,
+ signing and verification).
+ """
+
+ # type used on the soledad documents
+ KEY_TYPE = OpenPGPKey.__name__
+ ACTIVE_TYPE = KEY_TYPE + KEYMANAGER_ACTIVE_TYPE
+
+ def __init__(self, soledad, gpgbinary=None):
+ """
+ Initialize the OpenPGP wrapper.
+
+ :param soledad: A Soledad instance for key storage.
+ :type soledad: leap.soledad.Soledad
+ :param gpgbinary: Name for GnuPG binary executable.
+ :type gpgbinary: C{str}
+ """
+ self._soledad = soledad
+ self._gpgbinary = gpgbinary
+ self.deferred_init = init_indexes(soledad)
+ self.deferred_init.addCallback(self._migrate_documents_schema)
+ self._wait_indexes("get_key", "put_key", "get_all_keys")
+
+ def _migrate_documents_schema(self, _):
+ from leap.keymanager.migrator import KeyDocumentsMigrator
+ migrator = KeyDocumentsMigrator(self._soledad)
+ return migrator.migrate()
+
+ def _wait_indexes(self, *methods):
+ """
+ Methods that need to wait for the indexes to be ready.
+
+ Heavily based on
+ http://blogs.fluidinfo.com/terry/2009/05/11/a-mixin-class-allowing-python-__init__-methods-to-work-with-twisted-deferreds/
+
+ :param methods: methods that need to wait for the indexes to be ready
+ :type methods: tuple(str)
+ """
+ self.waiting = []
+ self.stored = {}
+
+ def restore(_):
+ for method in self.stored:
+ setattr(self, method, self.stored[method])
+ for d in self.waiting:
+ d.callback(None)
+
+ def makeWrapper(method):
+ def wrapper(*args, **kw):
+ d = defer.Deferred()
+ d.addCallback(lambda _: self.stored[method](*args, **kw))
+ self.waiting.append(d)
+ return d
+ return wrapper
+
+ for method in methods:
+ self.stored[method] = getattr(self, method)
+ setattr(self, method, makeWrapper(method))
+
+ self.deferred_init.addCallback(restore)
+
+ #
+ # Keys management
+ #
+
+ def gen_key(self, address):
+ """
+ Generate an OpenPGP keypair bound to C{address}.
+
+ :param address: The address bound to the key.
+ :type address: str
+
+ :return: A Deferred which fires with the key bound to address, or fails
+ with KeyAlreadyExists if key already exists in local database.
+ :rtype: Deferred
+ """
+ # make sure the key does not already exist
+ leap_assert(is_address(address), 'Not an user address: %s' % address)
+
+ @defer.inlineCallbacks
+ def _gen_key(_):
+ with TempGPGWrapper(gpgbinary=self._gpgbinary) as gpg:
+ # TODO: inspect result, or use decorator
+ params = gpg.gen_key_input(
+ key_type='RSA',
+ key_length=4096,
+ name_real=address,
+ name_email=address,
+ name_comment='')
+ logger.info("About to generate keys... "
+ "This might take SOME time.")
+ yield from_thread(gpg.gen_key, params)
+ logger.info("Keys for %s have been successfully "
+ "generated." % (address,))
+ pubkeys = gpg.list_keys()
+
+ # assert for new key characteristics
+ leap_assert(
+ len(pubkeys) is 1, # a unitary keyring!
+ 'Keyring has wrong number of keys: %d.' % len(pubkeys))
+ key = gpg.list_keys(secret=True).pop()
+ leap_assert(
+ len(key['uids']) is 1, # with just one uid!
+ 'Wrong number of uids for key: %d.' % len(key['uids']))
+ uid_match = False
+ for uid in key['uids']:
+ if re.match('.*<%s>$' % address, uid) is not None:
+ uid_match = True
+ break
+ leap_assert(uid_match, 'Key not correctly bound to address.')
+
+ # insert both public and private keys in storage
+ deferreds = []
+ for secret in [True, False]:
+ key = gpg.list_keys(secret=secret).pop()
+ openpgp_key = self._build_key_from_gpg(
+ key,
+ gpg.export_keys(key['fingerprint'], secret=secret),
+ address)
+ d = self.put_key(openpgp_key)
+ deferreds.append(d)
+ yield defer.gatherResults(deferreds)
+
+ def key_already_exists(_):
+ raise errors.KeyAlreadyExists(address)
+
+ d = self.get_key(address)
+ d.addCallbacks(key_already_exists, _gen_key)
+ d.addCallback(lambda _: self.get_key(address, private=True))
+ return d
+
+ def get_key(self, address, private=False):
+ """
+ Get key bound to C{address} from local storage.
+
+ :param address: The address bound to the key.
+ :type address: str
+ :param private: Look for a private key instead of a public one?
+ :type private: bool
+
+ :return: A Deferred which fires with the OpenPGPKey bound to address,
+ or which fails with KeyNotFound if the key was not found on
+ local storage.
+ :rtype: Deferred
+ """
+ address = parse_address(address)
+
+ def build_key((keydoc, activedoc)):
+ if keydoc is None:
+ raise errors.KeyNotFound(address)
+ leap_assert(
+ address in keydoc.content[KEY_UIDS_KEY],
+ 'Wrong address in key %s. Expected %s, found %s.'
+ % (keydoc.content[KEY_FINGERPRINT_KEY], address,
+ keydoc.content[KEY_UIDS_KEY]))
+ key = build_key_from_dict(keydoc.content, activedoc.content)
+ key._gpgbinary = self._gpgbinary
+ return key
+
+ d = self._get_key_doc(address, private)
+ d.addCallback(build_key)
+ return d
+
+ @defer.inlineCallbacks
+ def get_all_keys(self, private=False):
+ """
+ Return all keys stored in local database.
+
+ :param private: Include private keys
+ :type private: bool
+
+ :return: A Deferred which fires with a list of all keys in local db.
+ :rtype: Deferred
+ """
+ HAS_ACTIVE = "has_active"
+
+ active_docs = yield self._soledad.get_from_index(
+ TAGS_PRIVATE_INDEX,
+ KEYMANAGER_ACTIVE_TAG,
+ '1' if private else '0')
+ key_docs = yield self._soledad.get_from_index(
+ TAGS_PRIVATE_INDEX,
+ KEYMANAGER_KEY_TAG,
+ '1' if private else '0')
+
+ keys = []
+ fp = lambda doc: doc.content[KEY_FINGERPRINT_KEY]
+ for active in active_docs:
+ fp_keys = filter(lambda k: fp(k) == fp(active), key_docs)
+
+ if len(fp_keys) == 0:
+ yield self._soledad.delete_doc(active)
+ continue
+ elif len(fp_keys) == 1:
+ key = fp_keys[0]
+ else:
+ key = yield self._repair_key_docs(fp_keys)
+ key.content[HAS_ACTIVE] = True
+ keys.append(build_key_from_dict(key.content, active.content))
+
+ unactive_keys = filter(lambda k: HAS_ACTIVE not in k.content, key_docs)
+ keys += map(lambda k: build_key_from_dict(k.content), unactive_keys)
+ defer.returnValue(keys)
+
+ def parse_key(self, key_data, address=None):
+ """
+ Parses a key (or key pair) data and returns
+ the OpenPGPKey keys.
+
+ :param key_data: the key data to be parsed.
+ :type key_data: str or unicode
+ :param address: Active address for the key.
+ :type address: str
+
+ :returns: the public key and private key (if applies) for that data.
+ :rtype: (public, private) -> tuple(OpenPGPKey, OpenPGPKey)
+ the tuple may have one or both components None
+ """
+ leap_assert_type(key_data, (str, unicode))
+ # TODO: add more checks for correct key data.
+ leap_assert(key_data is not None, 'Data does not represent a key.')
+
+ priv_info, privkey = process_key(
+ key_data, self._gpgbinary, secret=True)
+ pub_info, pubkey = process_key(
+ key_data, self._gpgbinary, secret=False)
+
+ if not pubkey:
+ return (None, None)
+
+ openpgp_privkey = None
+ if privkey:
+ # build private key
+ openpgp_privkey = self._build_key_from_gpg(priv_info, privkey,
+ address)
+ leap_check(pub_info['fingerprint'] == priv_info['fingerprint'],
+ 'Fingerprints for public and private key differ.',
+ errors.KeyFingerprintMismatch)
+ # build public key
+ openpgp_pubkey = self._build_key_from_gpg(pub_info, pubkey, address)
+
+ return (openpgp_pubkey, openpgp_privkey)
+
+ def put_raw_key(self, key_data, address):
+ """
+ Put key contained in C{key_data} in local storage.
+
+ :param key_data: The key data to be stored.
+ :type key_data: str or unicode
+ :param address: address for which this key will be active
+ :type address: str
+
+ :return: A Deferred which fires when the OpenPGPKey is in the storage.
+ :rtype: Deferred
+ """
+ leap_assert_type(key_data, (str, unicode))
+
+ openpgp_privkey = None
+ try:
+ openpgp_pubkey, openpgp_privkey = self.parse_key(
+ key_data, address)
+ except (errors.KeyAddressMismatch, errors.KeyFingerprintMismatch) as e:
+ return defer.fail(e)
+
+ def put_key(_, key):
+ return self.put_key(key)
+
+ d = defer.succeed(None)
+ if openpgp_pubkey is not None:
+ d.addCallback(put_key, openpgp_pubkey)
+ if openpgp_privkey is not None:
+ d.addCallback(put_key, openpgp_privkey)
+ return d
+
+ def put_key(self, key):
+ """
+ Put C{key} in local storage.
+
+ :param key: The key to be stored.
+ :type key: OpenPGPKey
+
+ :return: A Deferred which fires when the key is in the storage.
+ :rtype: Deferred
+ """
+ def merge_and_put((keydoc, activedoc)):
+ if not keydoc:
+ return put_new_key(activedoc)
+
+ active_content = None
+ if activedoc:
+ active_content = activedoc.content
+ oldkey = build_key_from_dict(keydoc.content, active_content)
+
+ key.merge(oldkey)
+ keydoc.set_json(key.get_json())
+ d = self._soledad.put_doc(keydoc)
+ d.addCallback(put_active, activedoc)
+ return d
+
+ def put_new_key(activedoc):
+ deferreds = []
+ if activedoc:
+ d = self._soledad.delete_doc(activedoc)
+ deferreds.append(d)
+ for json in [key.get_json(), key.get_active_json()]:
+ d = self._soledad.create_doc_from_json(json)
+ deferreds.append(d)
+ return defer.gatherResults(deferreds)
+
+ def put_active(_, activedoc):
+ active_json = key.get_active_json()
+ if activedoc:
+ activedoc.set_json(active_json)
+ d = self._soledad.put_doc(activedoc)
+ else:
+ d = self._soledad.create_doc_from_json(active_json)
+ return d
+
+ def get_active_doc(keydoc):
+ d = self._get_active_doc_from_address(key.address, key.private)
+ d.addCallback(lambda activedoc: (keydoc, activedoc))
+ return d
+
+ d = self._get_key_doc_from_fingerprint(key.fingerprint, key.private)
+ d.addCallback(get_active_doc)
+ d.addCallback(merge_and_put)
+ return d
+
+ def _get_key_doc(self, address, private=False):
+ """
+ Get the document with a key (public, by default) bound to C{address}.
+
+ If C{private} is True, looks for a private key instead of a public.
+
+ :param address: The address bound to the key.
+ :type address: str
+ :param private: Whether to look for a private key.
+ :type private: bool
+
+ :return: A Deferred which fires with a touple of two SoledadDocument
+ (keydoc, activedoc) or None if it does not exist.
+ :rtype: Deferred
+ """
+ def get_key_from_active_doc(activedoc):
+ if not activedoc:
+ return (None, None)
+ fingerprint = activedoc.content[KEY_FINGERPRINT_KEY]
+ d = self._get_key_doc_from_fingerprint(fingerprint, private)
+ d.addCallback(delete_active_if_no_key, activedoc)
+ return d
+
+ def delete_active_if_no_key(keydoc, activedoc):
+ if not keydoc:
+ d = self._soledad.delete_doc(activedoc)
+ d.addCallback(lambda _: (None, None))
+ return d
+ return (keydoc, activedoc)
+
+ d = self._get_active_doc_from_address(address, private)
+ d.addCallback(get_key_from_active_doc)
+ return d
+
+ def _build_key_from_gpg(self, key, key_data, address=None):
+ """
+ Build an OpenPGPKey for C{address} based on C{key} from
+ local gpg storage.
+
+ GPG key data has to be queried independently in this
+ wrapper, so we receive it in C{key_data}.
+
+ :param address: Active address for the key.
+ :type address: str
+ :param key: Key obtained from GPG storage.
+ :type key: dict
+ :param key_data: Key data obtained from GPG storage.
+ :type key_data: str
+ :return: An instance of the key.
+ :rtype: OpenPGPKey
+ """
+ return build_gpg_key(key, key_data, address, self._gpgbinary)
+
+ def delete_key(self, key):
+ """
+ Remove C{key} from storage.
+
+ :param key: The key to be removed.
+ :type key: EncryptionKey
+
+ :return: A Deferred which fires when the key is deleted, or which
+ fails with KeyNotFound if the key was not found on local
+ storage.
+ :rtype: Deferred
+ """
+ leap_assert_type(key, OpenPGPKey)
+
+ def delete_docs(activedocs):
+ deferreds = []
+ for doc in activedocs:
+ d = self._soledad.delete_doc(doc)
+ deferreds.append(d)
+ return defer.gatherResults(deferreds)
+
+ def get_key_docs(_):
+ return self._soledad.get_from_index(
+ TYPE_FINGERPRINT_PRIVATE_INDEX,
+ self.KEY_TYPE,
+ key.fingerprint,
+ '1' if key.private else '0')
+
+ def delete_key(docs):
+ if len(docs) == 0:
+ raise errors.KeyNotFound(key)
+ elif len(docs) > 1:
+ logger.warning("There is more than one key for fingerprint %s"
+ % key.fingerprint)
+
+ has_deleted = False
+ deferreds = []
+ for doc in docs:
+ if doc.content['fingerprint'] == key.fingerprint:
+ d = self._soledad.delete_doc(doc)
+ deferreds.append(d)
+ has_deleted = True
+ if not has_deleted:
+ raise errors.KeyNotFound(key)
+ return defer.gatherResults(deferreds)
+
+ d = self._soledad.get_from_index(
+ TYPE_FINGERPRINT_PRIVATE_INDEX,
+ self.ACTIVE_TYPE,
+ key.fingerprint,
+ '1' if key.private else '0')
+ d.addCallback(delete_docs)
+ d.addCallback(get_key_docs)
+ d.addCallback(delete_key)
+ return d
+
+ #
+ # Data encryption, decryption, signing and verifying
+ #
+
+ @staticmethod
+ def _assert_gpg_result_ok(result):
+ """
+ Check if GPG result is 'ok' and log stderr outputs.
+
+ :param result: GPG results, which have a field calld 'ok' that states
+ whether the gpg operation was successful or not.
+ :type result: object
+
+ :raise GPGError: Raised when the gpg operation was not successful.
+ """
+ stderr = getattr(result, 'stderr', None)
+ if stderr:
+ logger.debug("%s" % (stderr,))
+ if getattr(result, 'ok', None) is not True:
+ raise errors.GPGError(
+ 'Failed to encrypt/decrypt: %s' % stderr)
+
+ @defer.inlineCallbacks
+ def encrypt(self, data, pubkey, passphrase=None, sign=None,
+ cipher_algo='AES256'):
+ """
+ Encrypt C{data} using public @{pubkey} and sign with C{sign} key.
+
+ :param data: The data to be encrypted.
+ :type data: str
+ :param pubkey: The key used to encrypt.
+ :type pubkey: OpenPGPKey
+ :param sign: The key used for signing.
+ :type sign: OpenPGPKey
+ :param cipher_algo: The cipher algorithm to use.
+ :type cipher_algo: str
+
+ :return: A Deferred that will be fired with the encrypted data.
+ :rtype: defer.Deferred
+
+ :raise EncryptError: Raised if failed encrypting for some reason.
+ """
+ leap_assert_type(pubkey, OpenPGPKey)
+ leap_assert(pubkey.private is False, 'Key is not public.')
+ keys = [pubkey]
+ if sign is not None:
+ leap_assert_type(sign, OpenPGPKey)
+ leap_assert(sign.private is True)
+ keys.append(sign)
+ with TempGPGWrapper(keys, self._gpgbinary) as gpg:
+ result = yield from_thread(
+ gpg.encrypt,
+ data, pubkey.fingerprint,
+ default_key=sign.fingerprint if sign else None,
+ passphrase=passphrase, symmetric=False,
+ cipher_algo=cipher_algo)
+ # Here we cannot assert for correctness of sig because the sig is
+ # in the ciphertext.
+ # result.ok - (bool) indicates if the operation succeeded
+ # result.data - (bool) contains the result of the operation
+ try:
+ self._assert_gpg_result_ok(result)
+ defer.returnValue(result.data)
+ except errors.GPGError as e:
+ logger.warning('Failed to encrypt: %s.' % str(e))
+ raise errors.EncryptError()
+
+ @defer.inlineCallbacks
+ def decrypt(self, data, privkey, passphrase=None, verify=None):
+ """
+ Decrypt C{data} using private @{privkey} and verify with C{verify} key.
+
+ :param data: The data to be decrypted.
+ :type data: str
+ :param privkey: The key used to decrypt.
+ :type privkey: OpenPGPKey
+ :param passphrase: The passphrase for the secret key used for
+ decryption.
+ :type passphrase: str
+ :param verify: The key used to verify a signature.
+ :type verify: OpenPGPKey
+
+ :return: Deferred that will fire with the decrypted data and
+ if signature verifies (unicode, bool)
+ :rtype: Deferred
+
+ :raise DecryptError: Raised if failed decrypting for some reason.
+ """
+ leap_assert(privkey.private is True, 'Key is not private.')
+ keys = [privkey]
+ if verify is not None:
+ leap_assert_type(verify, OpenPGPKey)
+ leap_assert(verify.private is False)
+ keys.append(verify)
+ with TempGPGWrapper(keys, self._gpgbinary) as gpg:
+ try:
+ result = yield from_thread(gpg.decrypt,
+ data, passphrase=passphrase,
+ always_trust=True)
+ self._assert_gpg_result_ok(result)
+
+ # verify signature
+ sign_valid = False
+ if (verify is not None and
+ result.valid is True and
+ verify.fingerprint == result.pubkey_fingerprint):
+ sign_valid = True
+
+ defer.returnValue((result.data, sign_valid))
+ except errors.GPGError as e:
+ logger.warning('Failed to decrypt: %s.' % str(e))
+ raise errors.DecryptError(str(e))
+
+ def is_encrypted(self, data):
+ """
+ Return whether C{data} was asymmetrically encrypted using OpenPGP.
+
+ :param data: The data we want to know about.
+ :type data: str
+
+ :return: Whether C{data} was encrypted using this wrapper.
+ :rtype: bool
+ """
+ with TempGPGWrapper(gpgbinary=self._gpgbinary) as gpg:
+ gpgutil = GPGUtilities(gpg)
+ return gpgutil.is_encrypted_asym(data)
+
+ def sign(self, data, privkey, digest_algo='SHA512', clearsign=False,
+ detach=True, binary=False):
+ """
+ Sign C{data} with C{privkey}.
+
+ :param data: The data to be signed.
+ :type data: str
+
+ :param privkey: The private key to be used to sign.
+ :type privkey: OpenPGPKey
+ :param digest_algo: The hash digest to use.
+ :type digest_algo: str
+ :param clearsign: If True, create a cleartext signature.
+ :type clearsign: bool
+ :param detach: If True, create a detached signature.
+ :type detach: bool
+ :param binary: If True, do not ascii armour the output.
+ :type binary: bool
+
+ :return: The ascii-armored signed data.
+ :rtype: str
+ """
+ leap_assert_type(privkey, OpenPGPKey)
+ leap_assert(privkey.private is True)
+
+ # result.fingerprint - contains the fingerprint of the key used to
+ # sign.
+ with TempGPGWrapper(privkey, self._gpgbinary) as gpg:
+ result = gpg.sign(data, default_key=privkey.fingerprint,
+ digest_algo=digest_algo, clearsign=clearsign,
+ detach=detach, binary=binary)
+ rfprint = privkey.fingerprint
+ privkey = gpg.list_keys(secret=True).pop()
+ kfprint = privkey['fingerprint']
+ if result.fingerprint is None:
+ raise errors.SignFailed(
+ 'Failed to sign with key %s: %s' %
+ (privkey['fingerprint'], result.stderr))
+ leap_assert(
+ result.fingerprint == kfprint,
+ 'Signature and private key fingerprints mismatch: '
+ '%s != %s' % (rfprint, kfprint))
+ return result.data
+
+ def verify(self, data, pubkey, detached_sig=None):
+ """
+ Verify signed C{data} with C{pubkey}, eventually using
+ C{detached_sig}.
+
+ :param data: The data to be verified.
+ :type data: str
+ :param pubkey: The public key to be used on verification.
+ :type pubkey: OpenPGPKey
+ :param detached_sig: A detached signature. If given, C{data} is
+ verified against this detached signature.
+ :type detached_sig: str
+
+ :return: signature matches
+ :rtype: bool
+ """
+ leap_assert_type(pubkey, OpenPGPKey)
+ leap_assert(pubkey.private is False)
+ with TempGPGWrapper(pubkey, self._gpgbinary) as gpg:
+ result = None
+ if detached_sig is None:
+ result = gpg.verify(data)
+ else:
+ # to verify using a detached sig we have to use
+ # gpg.verify_file(), which receives the data as a binary
+ # stream and the name of a file containing the signature.
+ sf, sfname = tempfile.mkstemp()
+ with os.fdopen(sf, 'w') as sfd:
+ sfd.write(detached_sig)
+ result = gpg.verify_file(io.BytesIO(data), sig_file=sfname)
+ os.unlink(sfname)
+ gpgpubkey = gpg.list_keys().pop()
+ valid = result.valid
+ rfprint = result.fingerprint
+ kfprint = gpgpubkey['fingerprint']
+ return valid and rfprint == kfprint
+
+ def _get_active_doc_from_address(self, address, private):
+ d = self._soledad.get_from_index(
+ TYPE_ADDRESS_PRIVATE_INDEX,
+ self.ACTIVE_TYPE,
+ address,
+ '1' if private else '0')
+ d.addCallback(self._repair_and_get_doc, self._repair_active_docs)
+ d.addCallback(self._check_version)
+ return d
+
+ def _get_key_doc_from_fingerprint(self, fingerprint, private):
+ d = self._soledad.get_from_index(
+ TYPE_FINGERPRINT_PRIVATE_INDEX,
+ self.KEY_TYPE,
+ fingerprint,
+ '1' if private else '0')
+ d.addCallback(self._repair_and_get_doc, self._repair_key_docs)
+ d.addCallback(self._check_version)
+ return d
+
+ def _repair_and_get_doc(self, doclist, repair_func):
+ if len(doclist) is 0:
+ return None
+ elif len(doclist) > 1:
+ return repair_func(doclist)
+ return doclist[0]
+
+ def _check_version(self, doc):
+ if doc is not None:
+ version = doc.content[KEY_VERSION_KEY]
+ if version > KEYMANAGER_DOC_VERSION:
+ raise errors.KeyVersionError(str(version))
+ return doc
+
+ def _repair_key_docs(self, doclist):
+ """
+ If there is more than one key for a key id try to self-repair it
+
+ :return: a Deferred that will be fired with the valid key doc once all
+ the deletions are completed
+ :rtype: Deferred
+ """
+ def log_key_doc(doc):
+ logger.error("\t%s: %s" % (doc.content[KEY_UIDS_KEY],
+ doc.content[KEY_FINGERPRINT_KEY]))
+
+ def cmp_key(d1, d2):
+ return cmp(d1.content[KEY_REFRESHED_AT_KEY],
+ d2.content[KEY_REFRESHED_AT_KEY])
+
+ return self._repair_docs(doclist, cmp_key, log_key_doc)
+
+ @defer.inlineCallbacks
+ def _repair_active_docs(self, doclist):
+ """
+ If there is more than one active doc for an address try to self-repair
+ it
+
+ :return: a Deferred that will be fired with the valid active doc once
+ all the deletions are completed
+ :rtype: Deferred
+ """
+ keys = {}
+ for doc in doclist:
+ fp = doc.content[KEY_FINGERPRINT_KEY]
+ private = doc.content[KEY_PRIVATE_KEY]
+ try:
+ key = yield self._get_key_doc_from_fingerprint(fp, private)
+ keys[fp] = key
+ except Exception:
+ pass
+
+ def log_active_doc(doc):
+ logger.error("\t%s: %s" % (doc.content[KEY_ADDRESS_KEY],
+ doc.content[KEY_FINGERPRINT_KEY]))
+
+ def cmp_active(d1, d2):
+ # XXX: for private keys it will be nice to check which key is known
+ # by the nicknym server and keep this one. But this needs a
+ # refactor that might not be worth it.
+ used1 = (d1.content[KEY_SIGN_USED_KEY] +
+ d1.content[KEY_ENCR_USED_KEY])
+ used2 = (d2.content[KEY_SIGN_USED_KEY] +
+ d2.content[KEY_ENCR_USED_KEY])
+ res = cmp(used1, used2)
+ if res != 0:
+ return res
+
+ key1 = keys[d1.content[KEY_FINGERPRINT_KEY]]
+ key2 = keys[d2.content[KEY_FINGERPRINT_KEY]]
+ return cmp(key1.content[KEY_REFRESHED_AT_KEY],
+ key2.content[KEY_REFRESHED_AT_KEY])
+
+ doc = yield self._repair_docs(doclist, cmp_active, log_active_doc)
+ defer.returnValue(doc)
+
+ def _repair_docs(self, doclist, cmp_func, log_func):
+ logger.error("BUG ---------------------------------------------------")
+ logger.error("There is more than one doc of type %s:"
+ % (doclist[0].content[KEY_TYPE_KEY],))
+
+ doclist.sort(cmp=cmp_func, reverse=True)
+ log_func(doclist[0])
+ deferreds = []
+ for doc in doclist[1:]:
+ log_func(doc)
+ d = self._soledad.delete_doc(doc)
+ deferreds.append(d)
+
+ logger.error("")
+ logger.error(traceback.extract_stack())
+ logger.error("BUG (please report above info) ------------------------")
+ d = defer.gatherResults(deferreds, consumeErrors=True)
+ d.addCallback(lambda _: doclist[0])
+ return d
+
+
+def process_key(key_data, gpgbinary, secret=False):
+ with TempGPGWrapper(gpgbinary=gpgbinary) as gpg:
+ try:
+ gpg.import_keys(key_data)
+ info = gpg.list_keys(secret=secret).pop()
+ key = gpg.export_keys(info['fingerprint'], secret=secret)
+ except IndexError:
+ info = {}
+ key = None
+ return info, key
+
+
+def build_gpg_key(key_info, key_data, address=None, gpgbinary=None):
+ expiry_date = None
+ if key_info['expires']:
+ expiry_date = datetime.fromtimestamp(int(key_info['expires']))
+ uids = []
+ for uid in key_info['uids']:
+ uids.append(parse_address(uid))
+ if address and address not in uids:
+ raise errors.KeyAddressMismatch("UIDs %s found, but expected %s"
+ % (str(uids), address))
+
+ return OpenPGPKey(
+ address=address,
+ uids=uids,
+ gpgbinary=gpgbinary,
+ fingerprint=key_info['fingerprint'],
+ key_data=key_data,
+ private=True if key_info['type'] == 'sec' else False,
+ length=int(key_info['length']),
+ expiry_date=expiry_date,
+ refreshed_at=datetime.now())
diff --git a/src/leap/bitmask/keymanager/validation.py b/src/leap/bitmask/keymanager/validation.py
new file mode 100644
index 00000000..16a897e9
--- /dev/null
+++ b/src/leap/bitmask/keymanager/validation.py
@@ -0,0 +1,129 @@
+# -*- coding: utf-8 -*-
+# __init__.py
+# Copyright (C) 2014 LEAP
+#
+# 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/>.
+
+"""
+Validation levels implementation for key managment.
+
+See:
+ https://leap.se/en/docs/design/transitional-key-validation
+"""
+
+
+from datetime import datetime
+
+
+class ValidationLevel(object):
+ """
+ A validation level
+
+ Meant to be used to compare levels or get its string representation.
+ """
+ def __init__(self, name, value):
+ self.name = name
+ self.value = value
+
+ def __cmp__(self, other):
+ return cmp(self.value, other.value)
+
+ def __str__(self):
+ return self.name
+
+ def __repr__(self):
+ return "<ValidationLevel: %s (%d)>" % (self.name, self.value)
+
+
+class _ValidationLevels(object):
+ """
+ Handler class to manage validation levels. It should have only one global
+ instance 'ValidationLevels'.
+
+ The levels are attributes of the instance and can be used like:
+ ValidationLevels.Weak_Chain
+ ValidationLevels.get("Weak_Chain")
+ """
+ _level_names = ("Weak_Chain",
+ "Provider_Trust",
+ "Provider_Endorsement",
+ "Third_Party_Endorsement",
+ "Third_Party_Consensus",
+ "Historically_Auditing",
+ "Known_Key",
+ "Fingerprint")
+
+ def __init__(self):
+ for name in self._level_names:
+ setattr(self, name,
+ ValidationLevel(name, self._level_names.index(name)))
+
+ def get(self, name):
+ """
+ Get the ValidationLevel of a name
+
+ :param name: name of the level
+ :type name: str
+ :rtype: ValidationLevel
+ """
+ return getattr(self, name)
+
+ def __iter__(self):
+ return iter(self._level_names)
+
+
+ValidationLevels = _ValidationLevels()
+
+
+def can_upgrade(new_key, old_key):
+ """
+ :type new_key: EncryptionKey
+ :type old_key: EncryptionKey
+ :rtype: bool
+ """
+ # First contact
+ if old_key is None:
+ return True
+
+ # An update of the same key
+ if new_key.fingerprint == old_key.fingerprint:
+ return True
+
+ # Manually verified fingerprint
+ if new_key.validation == ValidationLevels.Fingerprint:
+ return True
+
+ # Expired key and higher validation level
+ if (old_key.expiry_date is not None and
+ old_key.expiry_date < datetime.now() and
+ new_key.validation >= old_key.validation):
+ return True
+
+ # No expiration date and higher validation level
+ if (old_key.expiry_date is None and
+ new_key.validation > old_key.validation):
+ return True
+
+ # Not successfully used and strict high validation level
+ if (not (old_key.sign_used and old_key.encr_used) and
+ new_key.validation > old_key.validation):
+ return True
+
+ # New key signed by the old key
+ # XXX: signatures are using key-ids instead of fingerprints
+ key_id = old_key.fingerprint[-16:]
+ if key_id in new_key.signatures:
+ return True
+
+ return False
diff --git a/src/leap/bitmask/keymanager/wrapper.py b/src/leap/bitmask/keymanager/wrapper.py
new file mode 100644
index 00000000..4f36cec9
--- /dev/null
+++ b/src/leap/bitmask/keymanager/wrapper.py
@@ -0,0 +1,134 @@
+# -*- coding: utf-8 -*-
+# wrapper.py
+# Copyright (C) 2016 LEAP
+#
+# 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/>.
+"""
+GPG wrapper for temporary keyrings
+"""
+import os
+import shutil
+import tempfile
+from gnupg import GPG
+
+from leap.common.check import leap_assert
+
+
+class TempGPGWrapper(object):
+ """
+ A context manager that wraps a temporary GPG keyring which only contains
+ the keys given at object creation.
+ """
+
+ def __init__(self, keys=None, gpgbinary=None):
+ """
+ Create an empty temporary keyring and import any given C{keys} into
+ it.
+
+ :param keys: OpenPGP key, or list of.
+ :type keys: OpenPGPKey or list of OpenPGPKeys
+ :param gpgbinary: Name for GnuPG binary executable.
+ :type gpgbinary: C{str}
+ """
+ self._gpg = None
+ self._gpgbinary = gpgbinary
+ if not keys:
+ keys = list()
+ if not isinstance(keys, list):
+ keys = [keys]
+ self._keys = keys
+
+ def __enter__(self):
+ """
+ Build and return a GPG keyring containing the keys given on
+ object creation.
+
+ :return: A GPG instance containing the keys given on object creation.
+ :rtype: gnupg.GPG
+ """
+ self._build_keyring()
+ return self._gpg
+
+ def __exit__(self, exc_type, exc_value, traceback):
+ """
+ Ensure the gpg is properly destroyed.
+ """
+ # TODO handle exceptions and log here
+ self._destroy_keyring()
+
+ def _build_keyring(self):
+ """
+ Create a GPG keyring containing the keys given on object creation.
+
+ :return: A GPG instance containing the keys given on object creation.
+ :rtype: gnupg.GPG
+ """
+ privkeys = [key for key in self._keys if key and key.private is True]
+ publkeys = [key for key in self._keys if key and key.private is False]
+ # here we filter out public keys that have a correspondent
+ # private key in the list because the private key_data by
+ # itself is enough to also have the public key in the keyring,
+ # and we want to count the keys afterwards.
+
+ privfps = map(lambda privkey: privkey.fingerprint, privkeys)
+ publkeys = filter(
+ lambda pubkey: pubkey.fingerprint not in privfps, publkeys)
+
+ listkeys = lambda: self._gpg.list_keys()
+ listsecretkeys = lambda: self._gpg.list_keys(secret=True)
+
+ self._gpg = GPG(binary=self._gpgbinary,
+ homedir=tempfile.mkdtemp())
+ leap_assert(len(listkeys()) is 0, 'Keyring not empty.')
+
+ # import keys into the keyring:
+ # concatenating ascii-armored keys, which is correctly
+ # understood by GPG.
+
+ self._gpg.import_keys("".join(
+ [x.key_data for x in publkeys + privkeys]))
+
+ # assert the number of keys in the keyring
+ leap_assert(
+ len(listkeys()) == len(publkeys) + len(privkeys),
+ 'Wrong number of public keys in keyring: %d, should be %d)' %
+ (len(listkeys()), len(publkeys) + len(privkeys)))
+ leap_assert(
+ len(listsecretkeys()) == len(privkeys),
+ 'Wrong number of private keys in keyring: %d, should be %d)' %
+ (len(listsecretkeys()), len(privkeys)))
+
+ def _destroy_keyring(self):
+ """
+ Securely erase the keyring.
+ """
+ # TODO: implement some kind of wiping of data or a more
+ # secure way that
+ # does not write to disk.
+
+ try:
+ for secret in [True, False]:
+ for key in self._gpg.list_keys(secret=secret):
+ self._gpg.delete_keys(
+ key['fingerprint'],
+ secret=secret)
+ leap_assert(len(self._gpg.list_keys()) is 0, 'Keyring not empty!')
+
+ except:
+ raise
+
+ finally:
+ leap_assert(self._gpg.homedir != os.path.expanduser('~/.gnupg'),
+ "watch out! Tried to remove default gnupg home!")
+ shutil.rmtree(self._gpg.homedir)