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authordrebs <drebs@leap.se>2013-05-06 19:31:56 -0300
committerdrebs <drebs@leap.se>2013-05-11 17:01:04 -0300
commita7584ae58e7d08498199d8a556c928f7b8d6b20e (patch)
tree9ee59b3e6cbc7b1c7d3978cc2c053a9767c07500 /src/leap/mail/tests/smtp
parent8fb5895c46282aa913d2cf3c31f3c526174b3f3b (diff)
Adapt smtp-relay to use leap.common.keymanager
* Add docstrings to smtp-relay classes. * Setup test suite. * Add setuptools-trial as dependency for tests. * Move smtp-relay tests to default test directory. * Add tests for smtp-relay. * Send of unencrypted mail depending on 'encrypted_only' param. * Malformed email address. * Add a helper function for smtp-relay. * Assert params for initializing SMTPFactory. * Use mail.util.parseaddr to parse email address. * Use email.message.Message to represent an email message in smtp-relay. * Make requirements effective and fix leap.common version in setup.py. * Add/remove dependencies in setup.py. * Fix Soledad instantiation in tests. * Fix sender address in smtp-relay. * Fix some comments regarding twisted's SSL and SMTP. * Remove authentication from smtp-relay when sending. This closes #2446.
Diffstat (limited to 'src/leap/mail/tests/smtp')
-rw-r--r--src/leap/mail/tests/smtp/185CA770.key79
-rw-r--r--src/leap/mail/tests/smtp/185CA770.pub52
-rw-r--r--src/leap/mail/tests/smtp/__init__.py268
-rw-r--r--src/leap/mail/tests/smtp/mail.txt10
-rw-r--r--src/leap/mail/tests/smtp/test_smtprelay.py212
5 files changed, 621 insertions, 0 deletions
diff --git a/src/leap/mail/tests/smtp/185CA770.key b/src/leap/mail/tests/smtp/185CA770.key
new file mode 100644
index 0000000..587b416
--- /dev/null
+++ b/src/leap/mail/tests/smtp/185CA770.key
@@ -0,0 +1,79 @@
+-----BEGIN PGP PRIVATE KEY BLOCK-----
+Version: GnuPG v1.4.10 (GNU/Linux)
+
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+-----END PGP PRIVATE KEY BLOCK-----
diff --git a/src/leap/mail/tests/smtp/185CA770.pub b/src/leap/mail/tests/smtp/185CA770.pub
new file mode 100644
index 0000000..38af19f
--- /dev/null
+++ b/src/leap/mail/tests/smtp/185CA770.pub
@@ -0,0 +1,52 @@
+-----BEGIN PGP PUBLIC KEY BLOCK-----
+Version: GnuPG v1.4.10 (GNU/Linux)
+
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+-----END PGP PUBLIC KEY BLOCK-----
diff --git a/src/leap/mail/tests/smtp/__init__.py b/src/leap/mail/tests/smtp/__init__.py
new file mode 100644
index 0000000..113e047
--- /dev/null
+++ b/src/leap/mail/tests/smtp/__init__.py
@@ -0,0 +1,268 @@
+# -*- 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/>.
+
+
+"""
+Base classes and keys for SMTP relay tests.
+"""
+
+import os
+import shutil
+import tempfile
+from mock import Mock
+
+
+from twisted.trial import unittest
+
+
+from leap.soledad import Soledad
+from leap.soledad.crypto import SoledadCrypto
+from leap.common.keymanager import (
+ KeyManager,
+ openpgp,
+)
+
+
+from leap.common.testing.basetest import BaseLeapTest
+
+
+class TestCaseWithKeyManager(BaseLeapTest):
+
+ def setUp(self):
+ # mimic BaseLeapTest.setUpClass behaviour, because this is deprecated
+ # in Twisted: http://twistedmatrix.com/trac/ticket/1870
+ self.old_path = os.environ['PATH']
+ self.old_home = os.environ['HOME']
+ self.tempdir = tempfile.mkdtemp(prefix="leap_tests-")
+ self.home = self.tempdir
+ bin_tdir = os.path.join(
+ self.tempdir,
+ 'bin')
+ os.environ["PATH"] = bin_tdir
+ os.environ["HOME"] = self.tempdir
+
+ # setup our own stuff
+ address = 'leap@leap.se' # user's address in the form user@provider
+ uuid = 'leap@leap.se'
+ passphrase = '123'
+ secret_path = os.path.join(self.tempdir, 'secret.gpg')
+ local_db_path = os.path.join(self.tempdir, 'soledad.u1db')
+ server_url = 'http://provider/'
+ cert_file = ''
+
+ # mock key fetching and storing so Soledad doesn't fail when trying to
+ # reach the server.
+ Soledad._fetch_keys_from_shared_db = Mock(return_value=None)
+ Soledad._assert_keys_in_shared_db = Mock(return_value=None)
+
+ # instantiate soledad
+ self._soledad = Soledad(
+ uuid,
+ passphrase,
+ secret_path,
+ local_db_path,
+ server_url,
+ cert_file,
+ )
+
+ self._config = {
+ 'host': 'http://provider/',
+ 'port': 25,
+ 'username': address,
+ 'password': '<password>',
+ 'encrypted_only': True
+ }
+
+ nickserver_url = '' # the url of the nickserver
+ self._km = KeyManager(address, nickserver_url, self._soledad)
+
+ # insert test keys in key manager.
+ pgp = openpgp.OpenPGPScheme(self._soledad)
+ pgp.put_ascii_key(PRIVATE_KEY)
+ pgp.put_ascii_key(PRIVATE_KEY_2)
+
+ def tearDown(self):
+ # mimic LeapBaseTest.tearDownClass behaviour
+ os.environ["PATH"] = self.old_path
+ os.environ["HOME"] = self.old_home
+ # safety check
+ assert self.tempdir.startswith('/tmp/leap_tests-')
+ shutil.rmtree(self.tempdir)
+
+
+# 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)
+
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+RZXoH+FTg9UAW87eqU610npOkT6cRaBxaMK/mDtGNdc=
+=JTFu
+-----END PGP PRIVATE KEY BLOCK-----
+"""
diff --git a/src/leap/mail/tests/smtp/mail.txt b/src/leap/mail/tests/smtp/mail.txt
new file mode 100644
index 0000000..9542047
--- /dev/null
+++ b/src/leap/mail/tests/smtp/mail.txt
@@ -0,0 +1,10 @@
+HELO drebs@riseup.net
+MAIL FROM: drebs@riseup.net
+RCPT TO: drebs@riseup.net
+RCPT TO: drebs@leap.se
+DATA
+Subject: leap test
+
+Hello world!
+.
+QUIT
diff --git a/src/leap/mail/tests/smtp/test_smtprelay.py b/src/leap/mail/tests/smtp/test_smtprelay.py
new file mode 100644
index 0000000..6ef4e85
--- /dev/null
+++ b/src/leap/mail/tests/smtp/test_smtprelay.py
@@ -0,0 +1,212 @@
+# -*- coding: utf-8 -*-
+# test_smtprelay.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/>.
+
+
+"""
+SMTP relay tests.
+"""
+
+
+import re
+
+
+from datetime import datetime
+from twisted.test import proto_helpers
+from twisted.mail.smtp import (
+ User,
+ SMTPBadRcpt,
+)
+from mock import Mock
+
+
+from leap.mail.smtp.smtprelay import (
+ SMTPFactory,
+ EncryptedMessage,
+)
+from leap.mail.tests.smtp import TestCaseWithKeyManager
+from leap.common.keymanager import openpgp
+
+
+# some regexps
+IP_REGEX = "(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}" + \
+ "([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])"
+HOSTNAME_REGEX = "(([a-zA-Z0-9]|[a-zA-Z0-9][a-zA-Z0-9\-]*[a-zA-Z0-9])\.)*" + \
+ "([A-Za-z0-9]|[A-Za-z0-9][A-Za-z0-9\-]*[A-Za-z0-9])"
+IP_OR_HOST_REGEX = '(' + IP_REGEX + '|' + HOSTNAME_REGEX + ')'
+
+
+class TestSmtpRelay(TestCaseWithKeyManager):
+
+ EMAIL_DATA = ['HELO relay.leap.se',
+ 'MAIL FROM: <user@leap.se>',
+ 'RCPT TO: <leap@leap.se>',
+ 'DATA',
+ 'From: User <user@leap.se>',
+ 'To: Leap <leap@leap.se>',
+ 'Date: ' + datetime.now().strftime('%c'),
+ 'Subject: test message',
+ '',
+ 'This is a secret message.',
+ 'Yours,',
+ 'A.',
+ '',
+ '.',
+ 'QUIT']
+
+ def assertMatch(self, string, pattern, msg=None):
+ if not re.match(pattern, string):
+ msg = self._formatMessage(msg, '"%s" does not match pattern "%s".'
+ % (string, pattern))
+ raise self.failureException(msg)
+
+ def test_openpgp_encrypt_decrypt(self):
+ "Test if openpgp can encrypt and decrypt."
+ text = "simple raw text"
+ pubkey = self._km.get_key(
+ 'leap@leap.se', openpgp.OpenPGPKey, private=False)
+ encrypted = openpgp.encrypt_asym(text, pubkey)
+ self.assertNotEqual(text, encrypted, "failed encrypting text")
+ privkey = self._km.get_key(
+ 'leap@leap.se', openpgp.OpenPGPKey, private=True)
+ decrypted = openpgp.decrypt_asym(encrypted, privkey)
+ self.assertEqual(text, decrypted, "failed decrypting text")
+
+ def test_relay_accepts_valid_email(self):
+ """
+ Test if SMTP server responds correctly for valid interaction.
+ """
+
+ SMTP_ANSWERS = ['220 ' + IP_OR_HOST_REGEX +
+ ' NO UCE NO UBE NO RELAY PROBES',
+ '250 ' + IP_OR_HOST_REGEX + ' Hello ' +
+ IP_OR_HOST_REGEX + ', nice to meet you',
+ '250 Sender address accepted',
+ '250 Recipient address accepted',
+ '354 Continue']
+ proto = SMTPFactory(
+ self._km, self._config).buildProtocol(('127.0.0.1', 0))
+ transport = proto_helpers.StringTransport()
+ proto.makeConnection(transport)
+ for i, line in enumerate(self.EMAIL_DATA):
+ proto.lineReceived(line + '\r\n')
+ self.assertMatch(transport.value(),
+ '\r\n'.join(SMTP_ANSWERS[0:i + 1]))
+ proto.setTimeout(None)
+
+ def test_message_encrypt(self):
+ """
+ Test if message gets encrypted to destination email.
+ """
+ proto = SMTPFactory(
+ self._km, self._config).buildProtocol(('127.0.0.1', 0))
+ user = User('leap@leap.se', 'relay.leap.se', proto, 'leap@leap.se')
+ m = EncryptedMessage(user, self._km, self._config)
+ for line in self.EMAIL_DATA[4:12]:
+ m.lineReceived(line)
+ m.eomReceived()
+ privkey = self._km.get_key(
+ 'leap@leap.se', openpgp.OpenPGPKey, private=True)
+ decrypted = openpgp.decrypt_asym(m._message.get_payload(), privkey)
+ self.assertEqual(
+ '\r\n'.join(self.EMAIL_DATA[9:12]) + '\r\n',
+ decrypted)
+
+ def test_missing_key_rejects_address(self):
+ """
+ Test if server rejects to send unencrypted when 'encrypted_only' is
+ True.
+ """
+ # remove key from key manager
+ pubkey = self._km.get_key('leap@leap.se', openpgp.OpenPGPKey)
+ pgp = openpgp.OpenPGPScheme(self._soledad)
+ pgp.delete_key(pubkey)
+ # mock the key fetching
+ self._km.fetch_keys_from_server = Mock(return_value=[])
+ # prepare the SMTP factory
+ proto = SMTPFactory(
+ self._km, self._config).buildProtocol(('127.0.0.1', 0))
+ transport = proto_helpers.StringTransport()
+ proto.makeConnection(transport)
+ proto.lineReceived(self.EMAIL_DATA[0] + '\r\n')
+ proto.lineReceived(self.EMAIL_DATA[1] + '\r\n')
+ proto.lineReceived(self.EMAIL_DATA[2] + '\r\n')
+ # ensure the address was rejected
+ lines = transport.value().rstrip().split('\n')
+ self.assertEqual(
+ '550 Cannot receive for specified address',
+ lines[-1])
+
+ def test_missing_key_accepts_address(self):
+ """
+ Test if server accepts to send unencrypted when 'encrypted_only' is
+ False.
+ """
+ # remove key from key manager
+ pubkey = self._km.get_key('leap@leap.se', openpgp.OpenPGPKey)
+ pgp = openpgp.OpenPGPScheme(self._soledad)
+ pgp.delete_key(pubkey)
+ # mock the key fetching
+ self._km.fetch_keys_from_server = Mock(return_value=[])
+ # change the configuration
+ self._config['encrypted_only'] = False
+ # prepare the SMTP factory
+ proto = SMTPFactory(
+ self._km, self._config).buildProtocol(('127.0.0.1', 0))
+ transport = proto_helpers.StringTransport()
+ proto.makeConnection(transport)
+ proto.lineReceived(self.EMAIL_DATA[0] + '\r\n')
+ proto.lineReceived(self.EMAIL_DATA[1] + '\r\n')
+ proto.lineReceived(self.EMAIL_DATA[2] + '\r\n')
+ # ensure the address was rejected
+ lines = transport.value().rstrip().split('\n')
+ self.assertEqual(
+ '250 Recipient address accepted',
+ lines[-1])
+
+ def test_malformed_address_rejects(self):
+ """
+ Test if server rejects to send to malformed addresses.
+ """
+ # mock the key fetching
+ self._km.fetch_keys_from_server = Mock(return_value=[])
+ # prepare the SMTP factory
+ for malformed in ['leap@']:
+ proto = SMTPFactory(
+ self._km, self._config).buildProtocol(('127.0.0.1', 0))
+ transport = proto_helpers.StringTransport()
+ proto.makeConnection(transport)
+ proto.lineReceived(self.EMAIL_DATA[0] + '\r\n')
+ proto.lineReceived(self.EMAIL_DATA[1] + '\r\n')
+ proto.lineReceived('RCPT TO: <%s>%s' % (malformed, '\r\n'))
+ # ensure the address was rejected
+ lines = transport.value().rstrip().split('\n')
+ self.assertEqual(
+ '550 Cannot receive for specified address',
+ lines[-1])
+
+ def test_prepare_header_adds_from(self):
+ """
+ Test if message headers are OK.
+ """
+ proto = SMTPFactory(
+ self._km, self._config).buildProtocol(('127.0.0.1', 0))
+ user = User('leap@leap.se', 'relay.leap.se', proto, 'leap@leap.se')
+ m = EncryptedMessage(user, self._km, self._config)
+ for line in self.EMAIL_DATA[4:12]:
+ m.lineReceived(line)
+ m.eomReceived()
+ self.assertEqual('<leap@leap.se>', m._message['From'])