Merge remote-tracking branch 'drebs/feature/key-manager' into develop

1 files changed, 528 insertions, 0 deletions

diff --git a/src/leap/common/tests/test_keymanager.py b/src/leap/common/tests/test_keymanager.py
new file mode 100644
index 0000000..1d7a382
--- /dev/null
+++ b/src/leap/common/tests/test_keymanager.py
@@ -0,0 +1,528 @@
+## -*- coding: utf-8 -*-
+# test_keymanager.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/>.
+
+
+"""
+Tests for the Key Manager.
+"""
+
+
+import mock
+try:
+    import simplejson as json
+except ImportError:
+    import json  # noqa
+
+
+from leap.common.testing.basetest import BaseLeapTest
+from leap.soledad import Soledad
+from leap.soledad.crypto import SoledadCrypto
+
+
+from leap.common.keymanager import (
+    KeyManager,
+    openpgp,
+    KeyNotFound,
+    NoPasswordGiven,
+    TAGS_INDEX,
+    TAGS_AND_PRIVATE_INDEX,
+)
+from leap.common.keymanager.openpgp import OpenPGPKey
+from leap.common.keymanager.keys import (
+    is_address,
+    build_key_from_dict,
+    keymanager_doc_id,
+)
+from leap.common.keymanager import errors
+
+
+ADDRESS = 'leap@leap.se'
+
+
+class KeyManagerUtilTestCase(BaseLeapTest):
+
+    def setUp(self):
+        pass
+
+    def tearDown(self):
+        pass
+
+    def test_is_address(self):
+        self.assertTrue(
+            is_address('user@leap.se'),
+            'Incorrect address detection.')
+        self.assertFalse(
+            is_address('userleap.se'),
+            'Incorrect address detection.')
+        self.assertFalse(
+            is_address('user@'),
+            'Incorrect address detection.')
+        self.assertFalse(
+            is_address('@leap.se'),
+            'Incorrect address detection.')
+
+    def test_build_key_from_dict(self):
+        kdict = {
+            'address': ADDRESS,
+            'key_id': 'key_id',
+            'fingerprint': 'fingerprint',
+            'key_data': 'key_data',
+            'private': 'private',
+            'length': 'length',
+            'expiry_date': 'expiry_date',
+            'first_seen_at': 'first_seen_at',
+            'last_audited_at': 'last_audited_at',
+            'validation': 'validation',
+        }
+        key = build_key_from_dict(OpenPGPKey, ADDRESS, kdict)
+        self.assertEqual(
+            kdict['address'], key.address,
+            'Wrong data in key.')
+        self.assertEqual(
+            kdict['key_id'], key.key_id,
+            'Wrong data in key.')
+        self.assertEqual(
+            kdict['fingerprint'], key.fingerprint,
+            'Wrong data in key.')
+        self.assertEqual(
+            kdict['key_data'], key.key_data,
+            'Wrong data in key.')
+        self.assertEqual(
+            kdict['private'], key.private,
+            'Wrong data in key.')
+        self.assertEqual(
+            kdict['length'], key.length,
+            'Wrong data in key.')
+        self.assertEqual(
+            kdict['expiry_date'], key.expiry_date,
+            'Wrong data in key.')
+        self.assertEqual(
+            kdict['first_seen_at'], key.first_seen_at,
+            'Wrong data in key.')
+        self.assertEqual(
+            kdict['last_audited_at'], key.last_audited_at,
+            'Wrong data in key.')
+        self.assertEqual(
+            kdict['validation'], key.validation,
+            'Wrong data in key.')
+
+    def test_keymanager_doc_id(self):
+        doc_id1 = keymanager_doc_id(
+            OpenPGPKey, ADDRESS, private=False)
+        doc_id2 = keymanager_doc_id(
+            OpenPGPKey, ADDRESS, private=True)
+        doc_id3 = keymanager_doc_id(
+            OpenPGPKey, 'user@leap.se', private=False)
+        doc_id4 = keymanager_doc_id(
+            OpenPGPKey, 'user@leap.se', private=True)
+        self.assertFalse(doc_id1 == doc_id2, 'Doc ids are equal!')
+        self.assertFalse(doc_id1 == doc_id3, 'Doc ids are equal!')
+        self.assertFalse(doc_id1 == doc_id4, 'Doc ids are equal!')
+        self.assertFalse(doc_id2 == doc_id3, 'Doc ids are equal!')
+        self.assertFalse(doc_id2 == doc_id4, 'Doc ids are equal!')
+        self.assertFalse(doc_id3 == doc_id4, 'Doc ids are equal!')
+
+
+class KeyManagerWithSoledadTestCase(BaseLeapTest):
+
+    def setUp(self):
+        self._soledad = Soledad(
+            "leap@leap.se",
+            "123456",
+            secret_path=self.tempdir+"/secret.gpg",
+            local_db_path=self.tempdir+"/soledad.u1db",
+            server_url='',
+            cert_file=None,
+            bootstrap=False,
+        )
+        # initialize solead by hand for testing purposes
+        self._soledad._init_dirs()
+        self._soledad._crypto = SoledadCrypto(self._soledad)
+        self._soledad._shared_db = None
+        self._soledad._init_keys()
+        self._soledad._init_db()
+
+    def tearDown(self):
+        km = self._key_manager()
+        for key in km.get_all_keys_in_local_db():
+            km._wrapper_map[key.__class__].delete_key(key)
+        for key in km.get_all_keys_in_local_db(private=True):
+            km._wrapper_map[key.__class__].delete_key(key)
+
+    def _key_manager(self, user=ADDRESS, url=''):
+        return KeyManager(user, url, self._soledad)
+
+
+class OpenPGPCryptoTestCase(KeyManagerWithSoledadTestCase):
+
+    def test_openpgp_gen_key(self):
+        pgp = openpgp.OpenPGPScheme(self._soledad)
+        self.assertRaises(KeyNotFound, pgp.get_key, 'user@leap.se')
+        key = pgp.gen_key('user@leap.se')
+        self.assertIsInstance(key, openpgp.OpenPGPKey)
+        self.assertEqual(
+            'user@leap.se', key.address, 'Wrong address bound to key.')
+        self.assertEqual(
+            '4096', key.length, 'Wrong key length.')
+
+    def test_openpgp_put_delete_key(self):
+        pgp = openpgp.OpenPGPScheme(self._soledad)
+        self.assertRaises(KeyNotFound, pgp.get_key, ADDRESS)
+        pgp.put_key_raw(PUBLIC_KEY)
+        key = pgp.get_key(ADDRESS, private=False)
+        pgp.delete_key(key)
+        self.assertRaises(KeyNotFound, pgp.get_key, ADDRESS)
+
+    def test_openpgp_put_key_raw(self):
+        pgp = openpgp.OpenPGPScheme(self._soledad)
+        self.assertRaises(KeyNotFound, pgp.get_key, ADDRESS)
+        pgp.put_key_raw(PUBLIC_KEY)
+        key = pgp.get_key(ADDRESS, private=False)
+        self.assertIsInstance(key, openpgp.OpenPGPKey)
+        self.assertEqual(
+            ADDRESS, key.address, 'Wrong address bound to key.')
+        self.assertEqual(
+            '4096', key.length, 'Wrong key length.')
+        pgp.delete_key(key)
+        self.assertRaises(KeyNotFound, pgp.get_key, ADDRESS)
+
+    def test_get_public_key(self):
+        pgp = openpgp.OpenPGPScheme(self._soledad)
+        self.assertRaises(KeyNotFound, pgp.get_key, ADDRESS)
+        pgp.put_key_raw(PUBLIC_KEY)
+        self.assertRaises(
+            KeyNotFound, pgp.get_key, ADDRESS, private=True)
+        key = pgp.get_key(ADDRESS, private=False)
+        self.assertEqual(ADDRESS, key.address)
+        self.assertFalse(key.private)
+        self.assertEqual(KEY_FINGERPRINT, key.fingerprint)
+        pgp.delete_key(key)
+        self.assertRaises(KeyNotFound, pgp.get_key, ADDRESS)
+
+    def test_openpgp_encrypt_decrypt_asym(self):
+        # encrypt
+        pgp = openpgp.OpenPGPScheme(self._soledad)
+        pgp.put_key_raw(PUBLIC_KEY)
+        pubkey = pgp.get_key(ADDRESS, private=False)
+        cyphertext = openpgp.encrypt_asym('data', pubkey)
+        # assert
+        self.assertTrue(cyphertext is not None)
+        self.assertTrue(cyphertext != '')
+        self.assertTrue(cyphertext != 'data')
+        self.assertTrue(openpgp.is_encrypted_asym(cyphertext))
+        self.assertFalse(openpgp.is_encrypted_sym(cyphertext))
+        self.assertTrue(openpgp.is_encrypted(cyphertext))
+        # decrypt
+        self.assertRaises(
+            KeyNotFound, pgp.get_key, ADDRESS, private=True)
+        pgp.put_key_raw(PRIVATE_KEY)
+        privkey = pgp.get_key(ADDRESS, private=True)
+        plaintext = openpgp.decrypt_asym(cyphertext, privkey)
+        pgp.delete_key(pubkey)
+        pgp.delete_key(privkey)
+        self.assertRaises(
+            KeyNotFound, pgp.get_key, ADDRESS, private=False)
+        self.assertRaises(
+            KeyNotFound, pgp.get_key, ADDRESS, private=True)
+
+    def test_openpgp_encrypt_decrypt_sym(self):
+        cyphertext = openpgp.encrypt_sym('data', 'pass')
+        self.assertTrue(cyphertext is not None)
+        self.assertTrue(cyphertext != '')
+        self.assertTrue(cyphertext != 'data')
+        self.assertTrue(openpgp.is_encrypted_sym(cyphertext))
+        self.assertFalse(openpgp.is_encrypted_asym(cyphertext))
+        self.assertTrue(openpgp.is_encrypted(cyphertext))
+        plaintext = openpgp.decrypt_sym(cyphertext, 'pass')
+        self.assertEqual('data', plaintext)
+
+
+class KeyManagerKeyManagementTestCase(
+    KeyManagerWithSoledadTestCase):
+
+    def test_get_all_keys_in_db(self):
+        km = self._key_manager()
+        km._wrapper_map[OpenPGPKey].put_key_raw(PRIVATE_KEY)
+        # get public keys
+        keys = km.get_all_keys_in_local_db(False)
+        self.assertEqual(len(keys), 1, 'Wrong number of keys')
+        self.assertEqual(ADDRESS, keys[0].address)
+        self.assertFalse(keys[0].private)
+        # get private keys
+        keys = km.get_all_keys_in_local_db(True)
+        self.assertEqual(len(keys), 1, 'Wrong number of keys')
+        self.assertEqual(ADDRESS, keys[0].address)
+        self.assertTrue(keys[0].private)
+
+    def test_get_public_key(self):
+        km = self._key_manager()
+        km._wrapper_map[OpenPGPKey].put_key_raw(PRIVATE_KEY)
+        # get the key
+        key = km.get_key(ADDRESS, OpenPGPKey, private=False,
+                         fetch_remote=False)
+        self.assertTrue(key is not None)
+        self.assertEqual(key.address, ADDRESS)
+        self.assertEqual(
+            key.fingerprint.lower(),  KEY_FINGERPRINT.lower())
+        self.assertFalse(key.private)
+
+    def test_get_private_key(self):
+        km = self._key_manager()
+        km._wrapper_map[OpenPGPKey].put_key_raw(PRIVATE_KEY)
+        # get the key
+        key = km.get_key(ADDRESS, OpenPGPKey, private=True,
+                         fetch_remote=False)
+        self.assertTrue(key is not None)
+        self.assertEqual(key.address, ADDRESS)
+        self.assertEqual(
+            key.fingerprint.lower(), KEY_FINGERPRINT.lower())
+        self.assertTrue(key.private)
+
+    def test_send_key_raises_key_not_found(self):
+        km = self._key_manager()
+        self.assertRaises(
+            KeyNotFound,
+            km.send_key, OpenPGPKey, send_private=False)
+
+    def test_send_private_key_raises_key_not_found(self):
+        km = self._key_manager()
+        km._wrapper_map[OpenPGPKey].put_key_raw(PUBLIC_KEY)
+        self.assertRaises(
+            KeyNotFound,
+            km.send_key, OpenPGPKey, send_private=True,
+            password='123')
+
+    def test_send_private_key_without_password_raises(self):
+        km = self._key_manager()
+        km._wrapper_map[OpenPGPKey].put_key_raw(PUBLIC_KEY)
+        self.assertRaises(
+            NoPasswordGiven,
+            km.send_key, OpenPGPKey, send_private=True)
+
+    def test_send_public_key(self):
+        km = self._key_manager()
+        km._wrapper_map[OpenPGPKey].put_key_raw(PUBLIC_KEY)
+        km._fetcher.put = mock.Mock()
+        km.token = '123'
+        km.send_key(OpenPGPKey, send_private=False)
+        # setup args
+        data = {
+            'address': km._address,
+            'keys': [
+                json.loads(
+                    km.get_key(
+                        km._address, OpenPGPKey).get_json()),
+            ]
+        }
+        url = km._nickserver_url + '/key/' + km._address
+
+        km._fetcher.put.assert_called_once_with(
+            url, data=data, auth=(km._address, '123')
+        )
+
+    def test_fetch_keys_from_server(self):
+        km = self._key_manager()
+        # setup mock
+
+        class Response(object):
+            status_code = 200
+            headers = {'content-type': 'application/json'}
+            def json(self):
+                return {'address': 'anotheruser@leap.se', 'keys': []}
+
+        km._fetcher.get = mock.Mock(
+            return_value=Response())
+        # do the fetch
+        km.fetch_keys_from_server('anotheruser@leap.se')
+        # and verify the call
+        km._fetcher.get.assert_called_once_with(
+           km._nickserver_url + '/key/' + 'anotheruser@leap.se',
+        )
+
+    def test_refresh_keys(self):
+        # TODO: maybe we should not attempt to refresh our own public key?
+        km = self._key_manager()
+        km._wrapper_map[OpenPGPKey].put_key_raw(PUBLIC_KEY)
+        km.fetch_keys_from_server = mock.Mock(return_value=[])
+        km.refresh_keys()
+        km.fetch_keys_from_server.assert_called_once_with(
+            'leap@leap.se'
+        )
+
+
+# Key material for testing
+KEY_FINGERPRINT = "E36E738D69173C13D709E44F2F455E2824D18DDF"
+PUBLIC_KEY = """
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+Version: GnuPG v1.4.10 (GNU/Linux)
+
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+=MuOY
+-----END PGP PUBLIC KEY BLOCK-----
+"""
+PRIVATE_KEY = """
+-----BEGIN PGP PRIVATE KEY BLOCK-----
+Version: GnuPG v1.4.10 (GNU/Linux)
+
+lQcYBFC9+dkBEADNRfwV23TWEoGc/x0wWH1P7PlXt8MnC2Z1kKaKKmfnglVrpOiz
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+-----END PGP PRIVATE KEY BLOCK-----
+"""