Move the key manager from leap_client repo to its own repo.

2 files changed, 676 insertions, 0 deletions

diff --git a/src/leap/keymanager/tests/__init__.py b/src/leap/keymanager/tests/__init__.py
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/src/leap/keymanager/tests/__init__.py
diff --git a/src/leap/keymanager/tests/test_keymanager.py b/src/leap/keymanager/tests/test_keymanager.py
new file mode 100644
index 0000000..09a6183
--- /dev/null
+++ b/src/leap/keymanager/tests/test_keymanager.py
@@ -0,0 +1,676 @@
+## -*- 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.
+"""
+
+
+from mock import Mock
+from leap.common.testing.basetest import BaseLeapTest
+from leap.soledad import Soledad
+from leap.keymanager import (
+    KeyManager,
+    openpgp,
+    KeyNotFound,
+    NoPasswordGiven,
+    errors,
+)
+from leap.keymanager.openpgp import OpenPGPKey
+from leap.keymanager.keys import (
+    is_address,
+    build_key_from_dict,
+)
+
+
+ADDRESS = 'leap@leap.se'
+ADDRESS_2 = 'anotheruser@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.')
+
+
+class KeyManagerWithSoledadTestCase(BaseLeapTest):
+
+    def setUp(self):
+        # mock key fetching and storing so Soledad doesn't fail when trying to
+        # reach the server.
+        Soledad._get_secrets_from_shared_db = Mock(return_value=None)
+        Soledad._put_secrets_in_shared_db = Mock(return_value=None)
+
+        self._soledad = Soledad(
+            "leap@leap.se",
+            "123456",
+            secrets_path=self.tempdir + "/secret.gpg",
+            local_db_path=self.tempdir + "/soledad.u1db",
+            server_url='',
+            cert_file=None,
+            auth_token=None,
+        )
+
+    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_ascii_key(PUBLIC_KEY)
+        key = pgp.get_key(ADDRESS, private=False)
+        pgp.delete_key(key)
+        self.assertRaises(KeyNotFound, pgp.get_key, ADDRESS)
+
+    def test_openpgp_put_ascii_key(self):
+        pgp = openpgp.OpenPGPScheme(self._soledad)
+        self.assertRaises(KeyNotFound, pgp.get_key, ADDRESS)
+        pgp.put_ascii_key(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_ascii_key(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_ascii_key(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.assertTrue(openpgp.is_encrypted(cyphertext))
+        # decrypt
+        self.assertRaises(
+            KeyNotFound, pgp.get_key, ADDRESS, private=True)
+        pgp.put_ascii_key(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_verify_with_private_raises(self):
+        pgp = openpgp.OpenPGPScheme(self._soledad)
+        pgp.put_ascii_key(PRIVATE_KEY)
+        data = 'data'
+        privkey = pgp.get_key(ADDRESS, private=True)
+        signed = openpgp.sign(data, privkey)
+        self.assertRaises(
+            AssertionError,
+            openpgp.verify, signed, privkey)
+
+    def test_sign_with_public_raises(self):
+        pgp = openpgp.OpenPGPScheme(self._soledad)
+        pgp.put_ascii_key(PUBLIC_KEY)
+        data = 'data'
+        pubkey = pgp.get_key(ADDRESS, private=False)
+        self.assertRaises(
+            AssertionError,
+            openpgp.sign, data, pubkey)
+
+    def test_verify_with_wrong_key_raises(self):
+        pgp = openpgp.OpenPGPScheme(self._soledad)
+        pgp.put_ascii_key(PRIVATE_KEY)
+        data = 'data'
+        privkey = pgp.get_key(ADDRESS, private=True)
+        signed = openpgp.sign(data, privkey)
+        pgp.put_ascii_key(PUBLIC_KEY_2)
+        wrongkey = pgp.get_key(ADDRESS_2)
+        self.assertRaises(
+            errors.InvalidSignature,
+            openpgp.verify, signed, wrongkey)
+
+    def test_encrypt_asym_sign_with_public_raises(self):
+        pgp = openpgp.OpenPGPScheme(self._soledad)
+        pgp.put_ascii_key(PRIVATE_KEY)
+        data = 'data'
+        privkey = pgp.get_key(ADDRESS, private=True)
+        pubkey = pgp.get_key(ADDRESS, private=False)
+        self.assertRaises(
+            AssertionError,
+            openpgp.encrypt_asym, data, privkey, sign=pubkey)
+
+    def test_decrypt_asym_verify_with_private_raises(self):
+        pgp = openpgp.OpenPGPScheme(self._soledad)
+        pgp.put_ascii_key(PRIVATE_KEY)
+        data = 'data'
+        privkey = pgp.get_key(ADDRESS, private=True)
+        pubkey = pgp.get_key(ADDRESS, private=False)
+        encrypted_and_signed = openpgp.encrypt_asym(
+            data, pubkey, sign=privkey)
+        self.assertRaises(
+            AssertionError,
+            openpgp.decrypt_asym,
+            encrypted_and_signed, privkey, verify=privkey)
+
+    def test_decrypt_asym_verify_with_wrong_key_raises(self):
+        pgp = openpgp.OpenPGPScheme(self._soledad)
+        pgp.put_ascii_key(PRIVATE_KEY)
+        data = 'data'
+        privkey = pgp.get_key(ADDRESS, private=True)
+        pubkey = pgp.get_key(ADDRESS, private=False)
+        encrypted_and_signed = openpgp.encrypt_asym(data, pubkey, sign=privkey)
+        pgp.put_ascii_key(PUBLIC_KEY_2)
+        wrongkey = pgp.get_key(ADDRESS_2)
+        self.assertRaises(
+            errors.InvalidSignature,
+            openpgp.verify, encrypted_and_signed, wrongkey)
+
+    def test_sign_verify(self):
+        pgp = openpgp.OpenPGPScheme(self._soledad)
+        pgp.put_ascii_key(PRIVATE_KEY)
+        data = 'data'
+        privkey = pgp.get_key(ADDRESS, private=True)
+        signed = openpgp.sign(data, privkey)
+        pubkey = pgp.get_key(ADDRESS, private=False)
+        self.assertTrue(openpgp.verify(signed, pubkey))
+
+    def test_encrypt_asym_sign_decrypt_verify(self):
+        pgp = openpgp.OpenPGPScheme(self._soledad)
+        pgp.put_ascii_key(PRIVATE_KEY)
+        pubkey = pgp.get_key(ADDRESS, private=False)
+        privkey = pgp.get_key(ADDRESS, private=True)
+        pgp.put_ascii_key(PRIVATE_KEY_2)
+        pubkey2 = pgp.get_key(ADDRESS_2, private=False)
+        privkey2 = pgp.get_key(ADDRESS_2, private=True)
+        data = 'data'
+        encrypted_and_signed = openpgp.encrypt_asym(
+            data, pubkey2, sign=privkey)
+        res = openpgp.decrypt_asym(
+            encrypted_and_signed, privkey2, verify=pubkey)
+        self.assertTrue(data, res)
+
+
+class KeyManagerKeyManagementTestCase(KeyManagerWithSoledadTestCase):
+
+    def test_get_all_keys_in_db(self):
+        km = self._key_manager()
+        km._wrapper_map[OpenPGPKey].put_ascii_key(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_ascii_key(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_ascii_key(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)
+
+    def test_send_key(self):
+        """
+        Test that request is well formed when sending keys to server.
+        """
+        km = self._key_manager()
+        km._wrapper_map[OpenPGPKey].put_ascii_key(PUBLIC_KEY)
+        km._fetcher.put = Mock()
+        # the following data will be used on the send
+        km.ca_cert_path = 'capath'
+        km.session_id = 'sessionid'
+        km.uid = 'myuid'
+        km.api_uri = 'apiuri'
+        km.api_version = 'apiver'
+        km.send_key(OpenPGPKey)
+        # setup expected args
+        data = {
+            km.PUBKEY_KEY: km.get_key(km._address, OpenPGPKey).key_data,
+        }
+        url = '%s/%s/users/%s.json' % ('apiuri', 'apiver', 'myuid')
+        km._fetcher.put.assert_called_once_with(
+            url, data=data, verify='capath',
+            cookies={'_session_id': 'sessionid'},
+        )
+
+    def test__fetch_keys_from_server(self):
+        """
+        Test that the request is well formed when fetching keys from server.
+        """
+        km = self._key_manager(url='http://nickserver.domain')
+
+        class Response(object):
+            status_code = 200
+            headers = {'content-type': 'application/json'}
+
+            def json(self):
+                return {'address': ADDRESS_2, 'openpgp': PUBLIC_KEY_2}
+
+            def raise_for_status(self):
+                pass
+
+        # mock the fetcher so it returns the key for ADDRESS_2
+        km._fetcher.get = Mock(
+            return_value=Response())
+        km.ca_cert_path = 'cacertpath'
+        # do the fetch
+        km._fetch_keys_from_server(ADDRESS_2)
+        # and verify the call
+        km._fetcher.get.assert_called_once_with(
+            'http://nickserver.domain',
+            data={'address': ADDRESS_2},
+            verify='cacertpath',
+        )
+
+    def test_refresh_keys_does_not_refresh_own_key(self):
+        """
+        Test that refreshing keys will not attempt to refresh our own key.
+        """
+        km = self._key_manager()
+        # we add 2 keys but we expect it to only refresh the second one.
+        km._wrapper_map[OpenPGPKey].put_ascii_key(PUBLIC_KEY)
+        km._wrapper_map[OpenPGPKey].put_ascii_key(PUBLIC_KEY_2)
+        # mock the key fetching
+        km._fetch_keys_from_server = Mock(return_value=[])
+        km.ca_cert_path = ''  # some bogus path so the km does not complain.
+        # do the refreshing
+        km.refresh_keys()
+        km._fetch_keys_from_server.assert_called_once_with(
+            ADDRESS_2
+        )
+
+    def test_get_key_fetches_from_server(self):
+        """
+        Test that getting a key successfuly fetches from server.
+        """
+        km = self._key_manager(url='http://nickserver.domain')
+
+        class Response(object):
+            status_code = 200
+            headers = {'content-type': 'application/json'}
+
+            def json(self):
+                return {'address': ADDRESS_2, 'openpgp': PUBLIC_KEY_2}
+
+            def raise_for_status(self):
+                pass
+
+        # mock the fetcher so it returns the key for ADDRESS_2
+        km._fetcher.get = Mock(return_value=Response())
+        km.ca_cert_path = 'cacertpath'
+        # try to key get without fetching from server
+        self.assertRaises(
+            KeyNotFound, km.get_key, ADDRESS_2, OpenPGPKey,
+            fetch_remote=False
+        )
+        # try to get key fetching from server.
+        key = km.get_key(ADDRESS_2, OpenPGPKey)
+        self.assertIsInstance(key, OpenPGPKey)
+        self.assertEqual(ADDRESS_2, key.address)
+
+
+# Key material for testing
+
+# key 24D18DDF: public key "Leap Test Key <leap@leap.se>"
+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)
+
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+RZXoH+FTg9UAW87eqU610npOkT6cRaBxaMK/mDtGNdc=
+=JTFu
+-----END PGP PRIVATE KEY BLOCK-----
+"""
+
+# key 7FEE575A: public key "anotheruser <anotheruser@leap.se>"
+PUBLIC_KEY_2 = """
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+Version: GnuPG v1.4.10 (GNU/Linux)
+
+mI0EUYwJXgEEAMbTKHuPJ5/Gk34l9Z06f+0WCXTDXdte1UBoDtZ1erAbudgC4MOR
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+I+RS/3we6zpMfHs3vvp9xgca6ZupQxivGtxlJs294TpJorx+mFFqbV17AzQ=
+=Thdu
+-----END PGP PUBLIC KEY BLOCK-----
+"""
+
+PRIVATE_KEY_2 = """
+-----BEGIN PGP PRIVATE KEY BLOCK-----
+Version: GnuPG v1.4.10 (GNU/Linux)
+
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+CwkIBwMCBhUIAgkKCwQWAgMBAh4BAheAAAoJEH+d+mh/7ldai24D/i0s3gSBSvsh
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+77TJveOel0a1QK0YSMF2ywZMCKvquvjli4hAtWYz/EwfuzQN3t23jc5ny+GqmqD2
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+UA5kvyZcB4iAN9sWCybE4WHZ9jd4myGB0MPDGxkCAP1RsXJbbuD6zS7BXe5gwunO
+2q4q7ptdSl/sJYQuTe1KNP5d/uGsvlcFfsYjpsopasPjFBIncc/2QThMKlhoEaEB
+/0mVAxpT6SrEvUbJ18z7kna24SgMPr3OnPMxPGfvNLJY/Xv/A17YfoqjmByCvsKE
+JCDjopXtmbcrZyoEZbEht9mko4ifBBgBAgAJBQJRjAleAhsMAAoJEH+d+mh/7lda
+z2UEAKgs0crDpbvHs+z7ogQ+Enm4EalpcWtUxdbo83y5rj4r0TmdlysOWkLLcYBk
+o6Ae7WnOPbNIboeF/FyvgbSQX1POCUvCXNrGrZX8KMmd+Sx+rA2XJCPkUv98Hus6
+THx7N776fcYHGumbqUMYrxrcZSbNveE6SaK8fphRam1dewM0
+=a5gs
+-----END PGP PRIVATE KEY BLOCK-----
+"""
+import unittest
+if __name__ == "__main__":
+    unittest.main()