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#!/usr/bin/env python
"""Unit tests for M2Crypto.AuthCookie.
Copyright (c) 1999-2002 Ng Pheng Siong. All rights reserved."""
import Cookie, binascii, time, unittest, sys
from M2Crypto.AuthCookie import AuthCookie, AuthCookieJar, mix, unmix, unmix3
from M2Crypto import Rand, EVP
class AuthCookieTestCase(unittest.TestCase):
_format = 'Set-Cookie: _M2AUTH_="exp=%s&data=%s&digest=%s"'
if sys.version_info < (2,5):
_format += ';'
_token = '_M2AUTH_'
def setUp(self):
self.data = 'cogitoergosum'
self.exp = time.time() + 3600
self.jar = AuthCookieJar()
def tearDown(self):
pass
def test_mix_unmix(self):
dough = mix(self.exp, self.data)
exp, data = unmix(dough)
self.failUnlessEqual(data, self.data)
self.failUnlessEqual(exp, self.exp)
def test_make_cookie(self):
c = self.jar.makeCookie(self.exp, self.data)
self.failUnless(isinstance(c, AuthCookie))
self.failUnlessEqual(c.expiry(), self.exp)
self.failUnlessEqual(c.data(), self.data)
# Peek inside the cookie jar...
key = self.jar._key
mac = binascii.b2a_base64(EVP.hmac(key, mix(self.exp, self.data), 'sha1'))[:-1]
self.failUnlessEqual(c.mac(), mac)
# Ok, stop peeking now.
cookie_str = self._format % (repr(self.exp), self.data, mac)
self.failUnlessEqual(c.output(), cookie_str)
def test_expired(self):
t = self.exp - 7200
c = self.jar.makeCookie(t, self.data)
self.failUnless(c.isExpired())
def test_not_expired(self):
c = self.jar.makeCookie(self.exp, self.data)
self.failIf(c.isExpired())
def test_is_valid(self):
c = self.jar.makeCookie(self.exp, self.data)
self.failUnless(self.jar.isGoodCookie(c))
def test_is_invalid_expired(self):
t = self.exp - 7200
c = self.jar.makeCookie(t, self.data)
self.failIf(self.jar.isGoodCookie(c))
def test_is_invalid_changed_exp(self):
c = self.jar.makeCookie(self.exp, self.data)
c._expiry = 'this is bad'
self.failIf(self.jar.isGoodCookie(c))
def test_is_invalid_changed_data(self):
c = self.jar.makeCookie(self.exp, self.data)
c._data = 'this is bad'
self.failIf(self.jar.isGoodCookie(c))
def test_is_invalid_changed_mac(self):
c = self.jar.makeCookie(self.exp, self.data)
c._mac = 'this is bad'
self.failIf(self.jar.isGoodCookie(c))
def test_mix_unmix3(self):
c = self.jar.makeCookie(self.exp, self.data)
s = Cookie.SmartCookie()
s.load(c.output())
exp, data, digest = unmix3(s[self._token].value)
self.failUnlessEqual(data, self.data)
self.failUnlessEqual(float(exp), self.exp)
key = self.jar._key # Peeking...
mac = binascii.b2a_base64(EVP.hmac(key, mix(self.exp, self.data), 'sha1'))[:-1]
self.failUnlessEqual(digest, mac)
def test_cookie_str(self):
c = self.jar.makeCookie(self.exp, self.data)
self.failUnless(self.jar.isGoodCookieString(c.output()))
def test_cookie_str2(self):
c = self.jar.makeCookie(self.exp, self.data)
s = Cookie.SmartCookie()
s.load(c.output())
self.failUnless(self.jar.isGoodCookieString(s.output()))
def test_cookie_str_expired(self):
t = self.exp - 7200
c = self.jar.makeCookie(t, self.data)
s = Cookie.SmartCookie()
s.load(c.output())
self.failIf(self.jar.isGoodCookieString(s.output()))
def test_cookie_str_arbitrary_change(self):
c = self.jar.makeCookie(self.exp, self.data)
cout = c.output()
str = cout[:32] + 'this is bad' + cout[32:]
s = Cookie.SmartCookie()
s.load(str)
self.failIf(self.jar.isGoodCookieString(s.output()))
def test_cookie_str_changed_exp(self):
c = self.jar.makeCookie(self.exp, self.data)
cout = c.output()
str = cout[:26] + '2' + cout[27:]
s = Cookie.SmartCookie()
s.load(str)
self.failIf(self.jar.isGoodCookieString(s.output()))
def test_cookie_str_changed_data(self):
c = self.jar.makeCookie(self.exp, self.data)
cout = c.output()
str = cout[:36] + 'X' + cout[37:]
s = Cookie.SmartCookie()
s.load(str)
self.failIf(self.jar.isGoodCookieString(s.output()))
def test_cookie_str_changed_mac(self):
c = self.jar.makeCookie(self.exp, self.data)
cout = c.output()
str = cout[:76] + 'X' + cout[77:]
s = Cookie.SmartCookie()
s.load(str)
self.failIf(self.jar.isGoodCookieString(s.output()))
def suite():
return unittest.makeSuite(AuthCookieTestCase)
if __name__ == '__main__':
Rand.load_file('randpool.dat', -1)
unittest.TextTestRunner().run(suite())
Rand.save_file('randpool.dat')
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