1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
|
# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.
"""
Tests for L{twisted.cred}, now with 30% more starch.
"""
import hmac
from zope.interface import implements, Interface
from twisted.trial import unittest
from twisted.cred import portal, checkers, credentials, error
from twisted.python import components
from twisted.internet import defer
from twisted.internet.defer import deferredGenerator as dG, waitForDeferred as wFD
try:
from crypt import crypt
except ImportError:
crypt = None
try:
from twisted.cred.pamauth import callIntoPAM
except ImportError:
pamauth = None
else:
from twisted.cred import pamauth
class ITestable(Interface):
pass
class TestAvatar:
def __init__(self, name):
self.name = name
self.loggedIn = False
self.loggedOut = False
def login(self):
assert not self.loggedIn
self.loggedIn = True
def logout(self):
self.loggedOut = True
class Testable(components.Adapter):
implements(ITestable)
# components.Interface(TestAvatar).adaptWith(Testable, ITestable)
components.registerAdapter(Testable, TestAvatar, ITestable)
class IDerivedCredentials(credentials.IUsernamePassword):
pass
class DerivedCredentials(object):
implements(IDerivedCredentials, ITestable)
def __init__(self, username, password):
self.username = username
self.password = password
def checkPassword(self, password):
return password == self.password
class TestRealm:
implements(portal.IRealm)
def __init__(self):
self.avatars = {}
def requestAvatar(self, avatarId, mind, *interfaces):
if avatarId in self.avatars:
avatar = self.avatars[avatarId]
else:
avatar = TestAvatar(avatarId)
self.avatars[avatarId] = avatar
avatar.login()
return (interfaces[0], interfaces[0](avatar),
avatar.logout)
class NewCredTest(unittest.TestCase):
def setUp(self):
r = self.realm = TestRealm()
p = self.portal = portal.Portal(r)
up = self.checker = checkers.InMemoryUsernamePasswordDatabaseDontUse()
up.addUser("bob", "hello")
p.registerChecker(up)
def testListCheckers(self):
expected = [credentials.IUsernamePassword, credentials.IUsernameHashedPassword]
got = self.portal.listCredentialsInterfaces()
expected.sort()
got.sort()
self.assertEqual(got, expected)
def testBasicLogin(self):
l = []; f = []
self.portal.login(credentials.UsernamePassword("bob", "hello"),
self, ITestable).addCallback(
l.append).addErrback(f.append)
if f:
raise f[0]
# print l[0].getBriefTraceback()
iface, impl, logout = l[0]
# whitebox
self.assertEqual(iface, ITestable)
self.failUnless(iface.providedBy(impl),
"%s does not implement %s" % (impl, iface))
# greybox
self.failUnless(impl.original.loggedIn)
self.failUnless(not impl.original.loggedOut)
logout()
self.failUnless(impl.original.loggedOut)
def test_derivedInterface(self):
"""
Login with credentials implementing an interface inheriting from an
interface registered with a checker (but not itself registered).
"""
l = []
f = []
self.portal.login(DerivedCredentials("bob", "hello"), self, ITestable
).addCallback(l.append
).addErrback(f.append)
if f:
raise f[0]
iface, impl, logout = l[0]
# whitebox
self.assertEqual(iface, ITestable)
self.failUnless(iface.providedBy(impl),
"%s does not implement %s" % (impl, iface))
# greybox
self.failUnless(impl.original.loggedIn)
self.failUnless(not impl.original.loggedOut)
logout()
self.failUnless(impl.original.loggedOut)
def testFailedLogin(self):
l = []
self.portal.login(credentials.UsernamePassword("bob", "h3llo"),
self, ITestable).addErrback(
lambda x: x.trap(error.UnauthorizedLogin)).addCallback(l.append)
self.failUnless(l)
self.assertEqual(error.UnauthorizedLogin, l[0])
def testFailedLoginName(self):
l = []
self.portal.login(credentials.UsernamePassword("jay", "hello"),
self, ITestable).addErrback(
lambda x: x.trap(error.UnauthorizedLogin)).addCallback(l.append)
self.failUnless(l)
self.assertEqual(error.UnauthorizedLogin, l[0])
class CramMD5CredentialsTestCase(unittest.TestCase):
def testIdempotentChallenge(self):
c = credentials.CramMD5Credentials()
chal = c.getChallenge()
self.assertEqual(chal, c.getChallenge())
def testCheckPassword(self):
c = credentials.CramMD5Credentials()
chal = c.getChallenge()
c.response = hmac.HMAC('secret', chal).hexdigest()
self.failUnless(c.checkPassword('secret'))
def testWrongPassword(self):
c = credentials.CramMD5Credentials()
self.failIf(c.checkPassword('secret'))
class OnDiskDatabaseTestCase(unittest.TestCase):
users = [
('user1', 'pass1'),
('user2', 'pass2'),
('user3', 'pass3'),
]
def testUserLookup(self):
dbfile = self.mktemp()
db = checkers.FilePasswordDB(dbfile)
f = file(dbfile, 'w')
for (u, p) in self.users:
f.write('%s:%s\n' % (u, p))
f.close()
for (u, p) in self.users:
self.failUnlessRaises(KeyError, db.getUser, u.upper())
self.assertEqual(db.getUser(u), (u, p))
def testCaseInSensitivity(self):
dbfile = self.mktemp()
db = checkers.FilePasswordDB(dbfile, caseSensitive=0)
f = file(dbfile, 'w')
for (u, p) in self.users:
f.write('%s:%s\n' % (u, p))
f.close()
for (u, p) in self.users:
self.assertEqual(db.getUser(u.upper()), (u, p))
def testRequestAvatarId(self):
dbfile = self.mktemp()
db = checkers.FilePasswordDB(dbfile, caseSensitive=0)
f = file(dbfile, 'w')
for (u, p) in self.users:
f.write('%s:%s\n' % (u, p))
f.close()
creds = [credentials.UsernamePassword(u, p) for u, p in self.users]
d = defer.gatherResults(
[defer.maybeDeferred(db.requestAvatarId, c) for c in creds])
d.addCallback(self.assertEqual, [u for u, p in self.users])
return d
def testRequestAvatarId_hashed(self):
dbfile = self.mktemp()
db = checkers.FilePasswordDB(dbfile, caseSensitive=0)
f = file(dbfile, 'w')
for (u, p) in self.users:
f.write('%s:%s\n' % (u, p))
f.close()
creds = [credentials.UsernameHashedPassword(u, p) for u, p in self.users]
d = defer.gatherResults(
[defer.maybeDeferred(db.requestAvatarId, c) for c in creds])
d.addCallback(self.assertEqual, [u for u, p in self.users])
return d
class HashedPasswordOnDiskDatabaseTestCase(unittest.TestCase):
users = [
('user1', 'pass1'),
('user2', 'pass2'),
('user3', 'pass3'),
]
def hash(self, u, p, s):
return crypt(p, s)
def setUp(self):
dbfile = self.mktemp()
self.db = checkers.FilePasswordDB(dbfile, hash=self.hash)
f = file(dbfile, 'w')
for (u, p) in self.users:
f.write('%s:%s\n' % (u, crypt(p, u[:2])))
f.close()
r = TestRealm()
self.port = portal.Portal(r)
self.port.registerChecker(self.db)
def testGoodCredentials(self):
goodCreds = [credentials.UsernamePassword(u, p) for u, p in self.users]
d = defer.gatherResults([self.db.requestAvatarId(c) for c in goodCreds])
d.addCallback(self.assertEqual, [u for u, p in self.users])
return d
def testGoodCredentials_login(self):
goodCreds = [credentials.UsernamePassword(u, p) for u, p in self.users]
d = defer.gatherResults([self.port.login(c, None, ITestable)
for c in goodCreds])
d.addCallback(lambda x: [a.original.name for i, a, l in x])
d.addCallback(self.assertEqual, [u for u, p in self.users])
return d
def testBadCredentials(self):
badCreds = [credentials.UsernamePassword(u, 'wrong password')
for u, p in self.users]
d = defer.DeferredList([self.port.login(c, None, ITestable)
for c in badCreds], consumeErrors=True)
d.addCallback(self._assertFailures, error.UnauthorizedLogin)
return d
def testHashedCredentials(self):
hashedCreds = [credentials.UsernameHashedPassword(u, crypt(p, u[:2]))
for u, p in self.users]
d = defer.DeferredList([self.port.login(c, None, ITestable)
for c in hashedCreds], consumeErrors=True)
d.addCallback(self._assertFailures, error.UnhandledCredentials)
return d
def _assertFailures(self, failures, *expectedFailures):
for flag, failure in failures:
self.assertEqual(flag, defer.FAILURE)
failure.trap(*expectedFailures)
return None
if crypt is None:
skip = "crypt module not available"
class PluggableAuthenticationModulesTest(unittest.TestCase):
def setUp(self):
"""
Replace L{pamauth.callIntoPAM} with a dummy implementation with
easily-controlled behavior.
"""
self._oldCallIntoPAM = pamauth.callIntoPAM
pamauth.callIntoPAM = self.callIntoPAM
def tearDown(self):
"""
Restore the original value of L{pamauth.callIntoPAM}.
"""
pamauth.callIntoPAM = self._oldCallIntoPAM
def callIntoPAM(self, service, user, conv):
if service != 'Twisted':
raise error.UnauthorizedLogin('bad service: %s' % service)
if user != 'testuser':
raise error.UnauthorizedLogin('bad username: %s' % user)
questions = [
(1, "Password"),
(2, "Message w/ Input"),
(3, "Message w/o Input"),
]
replies = conv(questions)
if replies != [
("password", 0),
("entry", 0),
("", 0)
]:
raise error.UnauthorizedLogin('bad conversion: %s' % repr(replies))
return 1
def _makeConv(self, d):
def conv(questions):
return defer.succeed([(d[t], 0) for t, q in questions])
return conv
def testRequestAvatarId(self):
db = checkers.PluggableAuthenticationModulesChecker()
conv = self._makeConv({1:'password', 2:'entry', 3:''})
creds = credentials.PluggableAuthenticationModules('testuser',
conv)
d = db.requestAvatarId(creds)
d.addCallback(self.assertEqual, 'testuser')
return d
def testBadCredentials(self):
db = checkers.PluggableAuthenticationModulesChecker()
conv = self._makeConv({1:'', 2:'', 3:''})
creds = credentials.PluggableAuthenticationModules('testuser',
conv)
d = db.requestAvatarId(creds)
self.assertFailure(d, error.UnauthorizedLogin)
return d
def testBadUsername(self):
db = checkers.PluggableAuthenticationModulesChecker()
conv = self._makeConv({1:'password', 2:'entry', 3:''})
creds = credentials.PluggableAuthenticationModules('baduser',
conv)
d = db.requestAvatarId(creds)
self.assertFailure(d, error.UnauthorizedLogin)
return d
if not pamauth:
skip = "Can't run without PyPAM"
class CheckersMixin:
def testPositive(self):
for chk in self.getCheckers():
for (cred, avatarId) in self.getGoodCredentials():
r = wFD(chk.requestAvatarId(cred))
yield r
self.assertEqual(r.getResult(), avatarId)
testPositive = dG(testPositive)
def testNegative(self):
for chk in self.getCheckers():
for cred in self.getBadCredentials():
r = wFD(chk.requestAvatarId(cred))
yield r
self.assertRaises(error.UnauthorizedLogin, r.getResult)
testNegative = dG(testNegative)
class HashlessFilePasswordDBMixin:
credClass = credentials.UsernamePassword
diskHash = None
networkHash = staticmethod(lambda x: x)
_validCredentials = [
('user1', 'password1'),
('user2', 'password2'),
('user3', 'password3')]
def getGoodCredentials(self):
for u, p in self._validCredentials:
yield self.credClass(u, self.networkHash(p)), u
def getBadCredentials(self):
for u, p in [('user1', 'password3'),
('user2', 'password1'),
('bloof', 'blarf')]:
yield self.credClass(u, self.networkHash(p))
def getCheckers(self):
diskHash = self.diskHash or (lambda x: x)
hashCheck = self.diskHash and (lambda username, password, stored: self.diskHash(password))
for cache in True, False:
fn = self.mktemp()
fObj = file(fn, 'w')
for u, p in self._validCredentials:
fObj.write('%s:%s\n' % (u, diskHash(p)))
fObj.close()
yield checkers.FilePasswordDB(fn, cache=cache, hash=hashCheck)
fn = self.mktemp()
fObj = file(fn, 'w')
for u, p in self._validCredentials:
fObj.write('%s dingle dongle %s\n' % (diskHash(p), u))
fObj.close()
yield checkers.FilePasswordDB(fn, ' ', 3, 0, cache=cache, hash=hashCheck)
fn = self.mktemp()
fObj = file(fn, 'w')
for u, p in self._validCredentials:
fObj.write('zip,zap,%s,zup,%s\n' % (u.title(), diskHash(p)))
fObj.close()
yield checkers.FilePasswordDB(fn, ',', 2, 4, False, cache=cache, hash=hashCheck)
class LocallyHashedFilePasswordDBMixin(HashlessFilePasswordDBMixin):
diskHash = staticmethod(lambda x: x.encode('hex'))
class NetworkHashedFilePasswordDBMixin(HashlessFilePasswordDBMixin):
networkHash = staticmethod(lambda x: x.encode('hex'))
class credClass(credentials.UsernameHashedPassword):
def checkPassword(self, password):
return self.hashed.decode('hex') == password
class HashlessFilePasswordDBCheckerTestCase(HashlessFilePasswordDBMixin, CheckersMixin, unittest.TestCase):
pass
class LocallyHashedFilePasswordDBCheckerTestCase(LocallyHashedFilePasswordDBMixin, CheckersMixin, unittest.TestCase):
pass
class NetworkHashedFilePasswordDBCheckerTestCase(NetworkHashedFilePasswordDBMixin, CheckersMixin, unittest.TestCase):
pass
|