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import six
import unittest
from base64 import b64encode
from email.parser import Parser
from zope.interface import implementer
from memoryhole import protect, ProtectConfig, IOpenPGP
FROM = "me@domain.com"
TO = "you@other.com"
SUBJECT = "some subject"
BODY = "body text"
EMAIL = """From: %(from)s
To: %(to)s
Subject: %(subject)s
%(body)s
""" % {
"from": FROM,
"to": TO,
"subject": SUBJECT,
"body": BODY
}
class ProtectTest(unittest.TestCase):
def test_pgp_encrypted_mime(self):
p = Parser()
msg = p.parsestr(EMAIL)
encrypter = Encrypter()
conf = ProtectConfig(openpgp=encrypter, obscured_headers=[])
encmsg = protect(msg, config=conf)
self.assertEqual(encmsg.get_payload(1).get_payload(), encrypter.encstr)
self._assert_body(encrypter.data, BODY+'\n')
self.assertEqual([TO], encrypter.encraddr)
self.assertEqual(encmsg.get_content_type(), "multipart/encrypted")
def test_unobscured_headers(self):
p = Parser()
msg = p.parsestr(EMAIL)
encrypter = Encrypter()
conf = ProtectConfig(openpgp=encrypter, obscured_headers=[])
encmsg = protect(msg, config=conf)
self.assertEqual(encmsg['from'], FROM)
self.assertEqual(encmsg['to'], TO)
self.assertEqual(encmsg['subject'], SUBJECT)
def test_obscured_headers(self):
p = Parser()
msg = p.parsestr(EMAIL)
encrypter = Encrypter()
conf = ProtectConfig(openpgp=encrypter)
encmsg = protect(msg, config=conf)
for header, value in conf.obscured_headers.items():
msgheaders = encmsg.get_all(header, [])
if msgheaders:
self.assertEqual(msgheaders, [value])
encpart = p.parsestr(encrypter.data)
self.assertEqual(encpart.get_content_type(), "multipart/mixed")
rfc822part = encpart.get_payload(0)
self.assertEqual(rfc822part.get_content_type(), "text/rfc822-headers")
rfc822body = "Subject: %s\n" % (SUBJECT,)
self.assertEqual(rfc822part.get_payload(), rfc822body)
self.assertEqual(encpart.get_payload(1).get_payload(),
BODY+'\n')
def test_pgp_signed_mime(self):
p = Parser()
msg = p.parsestr(EMAIL)
signer = Signer()
conf = ProtectConfig(openpgp=signer)
encmsg = protect(msg, encrypt=False, config=conf)
b64body = b64encode(six.b(BODY+'\n'))
self.assertEqual(six.b(encmsg.get_payload(0).get_payload()), b64body)
self.assertEqual(encmsg.get_payload(1).get_payload(), signer.signature)
self._assert_body(signer.data, b64body.decode('utf-8'))
self.assertEqual(encmsg.get_content_type(), "multipart/signed")
def test_signed_headers(self):
p = Parser()
msg = p.parsestr(EMAIL)
signer = Signer()
conf = ProtectConfig(openpgp=signer)
signmsg = protect(msg, encrypt=False, config=conf)
self.assertEqual(signmsg['from'], FROM)
self.assertEqual(signmsg['to'], TO)
self.assertEqual(signmsg['subject'], SUBJECT)
signedpart = signmsg.get_payload(0)
self.assertEqual(signedpart['from'], FROM)
self.assertEqual(signedpart['to'], TO)
self.assertEqual(signedpart['subject'], SUBJECT)
def _assert_body(self, data, body):
p = Parser()
msg = p.parsestr(data)
self.assertEqual(msg.get_payload(), body)
@implementer(IOpenPGP)
class Encrypter(object):
encstr = "this is encrypted"
def encrypt(self, data, encraddr):
self.data = data
self.encraddr = encraddr
return self.encstr
@implementer(IOpenPGP)
class Signer(object):
signature = "this is a signature"
def sign(self, data):
self.data = data
return self.signature
if __name__ == "__main__":
unittest.main()
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