/usr/lib/python2.7/dist-packages/passlib/tests/test_ext_django.py is in python-passlib 1.7.1-1.
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#=============================================================================
# imports
#=============================================================================
# core
from __future__ import absolute_import, division, print_function
import logging; log = logging.getLogger(__name__)
import sys
# site
# pkg
from passlib import apps as _apps, exc, registry
from passlib.apps import django10_context, django14_context, django16_context
from passlib.context import CryptContext
from passlib.ext.django.utils import (
DJANGO_VERSION, MIN_DJANGO_VERSION, DjangoTranslator,
)
from passlib.utils.compat import iteritems, get_method_function, u
from passlib.utils.decor import memoized_property
# tests
from passlib.tests.utils import TestCase, TEST_MODE, handler_derived_from
from passlib.tests.test_handlers import get_handler_case, conditionally_available_hashes
# local
__all__ = [
"DjangoBehaviorTest",
"ExtensionBehaviorTest",
"_ExtensionSupport",
]
#=============================================================================
# configure django settings for testcases
#=============================================================================
# whether we have supported django version
has_min_django = DJANGO_VERSION >= MIN_DJANGO_VERSION
# import and configure empty django settings
# NOTE: we don't want to set up entirety of django, so not using django.setup() directly.
# instead, manually configuring the settings, and setting it up w/ no apps installed.
# in future, may need to alter this so we call django.setup() after setting
# DJANGO_SETTINGS_MODULE to a custom settings module w/ a dummy django app.
if has_min_django:
#
# initialize django settings manually
#
from django.conf import settings, LazySettings
if not isinstance(settings, LazySettings):
# this probably means django globals have been configured already,
# which we don't want, since test cases reset and manipulate settings.
raise RuntimeError("expected django.conf.settings to be LazySettings: %r" % (settings,))
# else configure a blank settings instance for the unittests
if not settings.configured:
settings.configure()
#
# init django apps w/ NO installed apps.
# NOTE: required for django >= 1.9
#
from django.apps import apps
apps.populate(["django.contrib.contenttypes", "django.contrib.auth"])
#=============================================================================
# support funcs
#=============================================================================
# flag for update_settings() to remove specified key entirely
UNSET = object()
def update_settings(**kwds):
"""helper to update django settings from kwds"""
for k,v in iteritems(kwds):
if v is UNSET:
if hasattr(settings, k):
delattr(settings, k)
else:
setattr(settings, k, v)
if has_min_django:
from django.contrib.auth.models import User
class FakeUser(User):
"""mock user object for use in testing"""
# NOTE: this mainly just overrides .save() to test commit behavior.
# NOTE: .Meta.app_label required for django >= 1.9
class Meta:
app_label = __name__
@memoized_property
def saved_passwords(self):
return []
def pop_saved_passwords(self):
try:
return self.saved_passwords[:]
finally:
del self.saved_passwords[:]
def save(self, update_fields=None):
# NOTE: ignoring update_fields for test purposes
self.saved_passwords.append(self.password)
def create_mock_setter():
state = []
def setter(password):
state.append(password)
def popstate():
try:
return state[:]
finally:
del state[:]
setter.popstate = popstate
return setter
#=============================================================================
# work up stock django config
#=============================================================================
# build config dict that matches stock django
# XXX: move these to passlib.apps?
if DJANGO_VERSION >= (1, 10):
stock_config = _apps.django110_context.to_dict()
stock_rounds = 30000
elif DJANGO_VERSION >= (1, 9):
stock_config = _apps.django16_context.to_dict()
stock_rounds = 24000
else: # 1.8
stock_config = _apps.django16_context.to_dict()
stock_rounds = 20000
stock_config.update(
deprecated="auto",
django_pbkdf2_sha1__default_rounds=stock_rounds,
django_pbkdf2_sha256__default_rounds=stock_rounds,
)
# override sample hashes used in test cases
from passlib.hash import django_pbkdf2_sha256
sample_hashes = dict(
django_pbkdf2_sha256=("not a password", django_pbkdf2_sha256
.using(rounds=stock_config.get("django_pbkdf2_sha256__default_rounds"))
.hash("not a password"))
)
#=============================================================================
# test utils
#=============================================================================
class _ExtensionSupport(object):
"""support funcs for loading/unloading extension"""
#===================================================================
# support funcs
#===================================================================
@classmethod
def _iter_patch_candidates(cls):
"""helper to scan for monkeypatches.
returns tuple containing:
* object (module or class)
* attribute of object
* value of attribute
* whether it should or should not be patched
"""
# XXX: this and assert_unpatched() could probably be refactored to use
# the PatchManager class to do the heavy lifting.
from django.contrib.auth import models, hashers
user_attrs = ["check_password", "set_password"]
model_attrs = ["check_password", "make_password"]
hasher_attrs = ["check_password", "make_password", "get_hasher", "identify_hasher",
"get_hashers"]
objs = [(models, model_attrs),
(models.User, user_attrs),
(hashers, hasher_attrs),
]
for obj, patched in objs:
for attr in dir(obj):
if attr.startswith("_"):
continue
value = obj.__dict__.get(attr, UNSET) # can't use getattr() due to GAE
if value is UNSET and attr not in patched:
continue
value = get_method_function(value)
source = getattr(value, "__module__", None)
if source:
yield obj, attr, source, (attr in patched)
#===================================================================
# verify current patch state
#===================================================================
def assert_unpatched(self):
"""test that django is in unpatched state"""
# make sure we aren't currently patched
mod = sys.modules.get("passlib.ext.django.models")
self.assertFalse(mod and mod.adapter.patched, "patch should not be enabled")
# make sure no objects have been replaced, by checking __module__
for obj, attr, source, patched in self._iter_patch_candidates():
if patched:
self.assertTrue(source.startswith("django.contrib.auth."),
"obj=%r attr=%r was not reverted: %r" %
(obj, attr, source))
else:
self.assertFalse(source.startswith("passlib."),
"obj=%r attr=%r should not have been patched: %r" %
(obj, attr, source))
def assert_patched(self, context=None):
"""helper to ensure django HAS been patched, and is using specified config"""
# make sure we're currently patched
mod = sys.modules.get("passlib.ext.django.models")
self.assertTrue(mod and mod.adapter.patched, "patch should have been enabled")
# make sure only the expected objects have been patched
for obj, attr, source, patched in self._iter_patch_candidates():
if patched:
self.assertTrue(source == "passlib.ext.django.utils",
"obj=%r attr=%r should have been patched: %r" %
(obj, attr, source))
else:
self.assertFalse(source.startswith("passlib."),
"obj=%r attr=%r should not have been patched: %r" %
(obj, attr, source))
# check context matches
if context is not None:
context = CryptContext._norm_source(context)
self.assertEqual(mod.password_context.to_dict(resolve=True),
context.to_dict(resolve=True))
#===================================================================
# load / unload the extension (and verify it worked)
#===================================================================
_config_keys = ["PASSLIB_CONFIG", "PASSLIB_CONTEXT", "PASSLIB_GET_CATEGORY"]
def load_extension(self, check=True, **kwds):
"""helper to load extension with specified config & patch django"""
self.unload_extension()
if check:
config = kwds.get("PASSLIB_CONFIG") or kwds.get("PASSLIB_CONTEXT")
for key in self._config_keys:
kwds.setdefault(key, UNSET)
update_settings(**kwds)
import passlib.ext.django.models
if check:
self.assert_patched(context=config)
def unload_extension(self):
"""helper to remove patches and unload extension"""
# remove patches and unload module
mod = sys.modules.get("passlib.ext.django.models")
if mod:
mod.adapter.remove_patch()
del sys.modules["passlib.ext.django.models"]
# wipe config from django settings
update_settings(**dict((key, UNSET) for key in self._config_keys))
# check everything's gone
self.assert_unpatched()
#===================================================================
# eoc
#===================================================================
# XXX: rename to ExtensionFixture?
class _ExtensionTest(TestCase, _ExtensionSupport):
def setUp(self):
super(_ExtensionTest, self).setUp()
self.require_TEST_MODE("default")
if not DJANGO_VERSION:
raise self.skipTest("Django not installed")
elif not has_min_django:
raise self.skipTest("Django version too old")
# reset to baseline, and verify it worked
self.unload_extension()
# and do the same when the test exits
self.addCleanup(self.unload_extension)
#=============================================================================
# extension tests
#=============================================================================
class DjangoBehaviorTest(_ExtensionTest):
"""tests model to verify it matches django's behavior"""
descriptionPrefix = "verify django behavior"
patched = False
config = stock_config
# NOTE: if this test fails, it means we're not accounting for
# some part of django's hashing logic, or that this is
# running against an untested version of django with a new
# hashing policy.
@property
def context(self):
return CryptContext._norm_source(self.config)
def assert_unusable_password(self, user):
"""check that user object is set to 'unusable password' constant"""
self.assertTrue(user.password.startswith("!"))
self.assertFalse(user.has_usable_password())
self.assertEqual(user.pop_saved_passwords(), [])
def assert_valid_password(self, user, hash=UNSET, saved=None):
"""check that user object has a usuable password hash.
:param hash: optionally check it has this exact hash
:param saved: check that mock commit history
for user.password matches this list
"""
if hash is UNSET:
self.assertNotEqual(user.password, "!")
self.assertNotEqual(user.password, None)
else:
self.assertEqual(user.password, hash)
self.assertTrue(user.has_usable_password(),
"hash should be usable: %r" % (user.password,))
self.assertEqual(user.pop_saved_passwords(),
[] if saved is None else [saved])
def test_config(self):
"""test hashing interface
this function is run against both the actual django code, to
verify the assumptions of the unittests are correct;
and run against the passlib extension, to verify it matches
those assumptions.
"""
patched, config = self.patched, self.config
# this tests the following methods:
# User.set_password()
# User.check_password()
# make_password() -- 1.4 only
# check_password()
# identify_hasher()
# User.has_usable_password()
# User.set_unusable_password()
# XXX: this take a while to run. what could be trimmed?
# TODO: get_hasher()
#=======================================================
# setup helpers & imports
#=======================================================
ctx = self.context
setter = create_mock_setter()
PASS1 = "toomanysecrets"
WRONG1 = "letmein"
from django.contrib.auth.hashers import (check_password, make_password,
is_password_usable, identify_hasher)
#=======================================================
# make sure extension is configured correctly
#=======================================================
if patched:
# contexts should match
from passlib.ext.django.models import password_context
self.assertEqual(password_context.to_dict(resolve=True),
ctx.to_dict(resolve=True))
# should have patched both places
from django.contrib.auth.models import check_password as check_password2
self.assertEqual(check_password2, check_password)
#=======================================================
# default algorithm
#=======================================================
# User.set_password() should use default alg
user = FakeUser()
user.set_password(PASS1)
self.assertTrue(ctx.handler().verify(PASS1, user.password))
self.assert_valid_password(user)
# User.check_password() - n/a
# make_password() should use default alg
hash = make_password(PASS1)
self.assertTrue(ctx.handler().verify(PASS1, hash))
# check_password() - n/a
#=======================================================
# empty password behavior
#=======================================================
# User.set_password() should use default alg
user = FakeUser()
user.set_password('')
hash = user.password
self.assertTrue(ctx.handler().verify('', hash))
self.assert_valid_password(user, hash)
# User.check_password() should return True
self.assertTrue(user.check_password(""))
self.assert_valid_password(user, hash)
# no make_password()
# check_password() should return True
self.assertTrue(check_password("", hash))
#=======================================================
# 'unusable flag' behavior
#=======================================================
# sanity check via user.set_unusable_password()
user = FakeUser()
user.set_unusable_password()
self.assert_unusable_password(user)
# ensure User.set_password() sets unusable flag
user = FakeUser()
user.set_password(None)
self.assert_unusable_password(user)
# User.check_password() should always fail
self.assertFalse(user.check_password(None))
self.assertFalse(user.check_password('None'))
self.assertFalse(user.check_password(''))
self.assertFalse(user.check_password(PASS1))
self.assertFalse(user.check_password(WRONG1))
self.assert_unusable_password(user)
# make_password() should also set flag
self.assertTrue(make_password(None).startswith("!"))
# check_password() should return False (didn't handle disabled under 1.3)
self.assertFalse(check_password(PASS1, '!'))
# identify_hasher() and is_password_usable() should reject it
self.assertFalse(is_password_usable(user.password))
self.assertRaises(ValueError, identify_hasher, user.password)
#=======================================================
# hash=None
#=======================================================
# User.set_password() - n/a
# User.check_password() - returns False
user = FakeUser()
user.password = None
self.assertFalse(user.check_password(PASS1))
self.assertFalse(user.has_usable_password())
# make_password() - n/a
# check_password() - error
self.assertFalse(check_password(PASS1, None))
# identify_hasher() - error
self.assertRaises(TypeError, identify_hasher, None)
#=======================================================
# empty & invalid hash values
# NOTE: django 1.5 behavior change due to django ticket 18453
# NOTE: passlib integration tries to match current django version
#=======================================================
for hash in ("", # empty hash
"$789$foo", # empty identifier
):
# User.set_password() - n/a
# User.check_password()
# As of django 1.5, blank OR invalid hash returns False
user = FakeUser()
user.password = hash
self.assertFalse(user.check_password(PASS1))
# verify hash wasn't changed/upgraded during check_password() call
self.assertEqual(user.password, hash)
self.assertEqual(user.pop_saved_passwords(), [])
# User.has_usable_password()
self.assertFalse(user.has_usable_password())
# make_password() - n/a
# check_password()
self.assertFalse(check_password(PASS1, hash))
# identify_hasher() - throws error
self.assertRaises(ValueError, identify_hasher, hash)
#=======================================================
# run through all the schemes in the context,
# testing various bits of per-scheme behavior.
#=======================================================
for scheme in ctx.schemes():
#-------------------------------------------------------
# setup constants & imports, pick a sample secret/hash combo
#-------------------------------------------------------
handler = ctx.handler(scheme)
deprecated = ctx.handler(scheme).deprecated
assert not deprecated or scheme != ctx.default_scheme()
try:
testcase = get_handler_case(scheme)
except exc.MissingBackendError:
assert scheme in conditionally_available_hashes
continue
assert handler_derived_from(handler, testcase.handler)
if handler.is_disabled:
continue
if not registry.has_backend(handler):
# TODO: move this above get_handler_case(),
# and omit MissingBackendError check.
assert scheme in ["django_bcrypt", "django_bcrypt_sha256", "django_argon2"], \
"%r scheme should always have active backend" % scheme
continue
try:
secret, hash = sample_hashes[scheme]
except KeyError:
get_sample_hash = testcase("setUp").get_sample_hash
while True:
secret, hash = get_sample_hash()
if secret: # don't select blank passwords
break
other = 'dontletmein'
# User.set_password() - n/a
#-------------------------------------------------------
# User.check_password()+migration against known hash
#-------------------------------------------------------
user = FakeUser()
user.password = hash
# check against invalid password
self.assertFalse(user.check_password(None))
##self.assertFalse(user.check_password(''))
self.assertFalse(user.check_password(other))
self.assert_valid_password(user, hash)
# check against valid password
self.assertTrue(user.check_password(secret))
# check if it upgraded the hash
# NOTE: needs_update kept separate in case we need to test rounds.
needs_update = deprecated
if needs_update:
self.assertNotEqual(user.password, hash)
self.assertFalse(handler.identify(user.password))
self.assertTrue(ctx.handler().verify(secret, user.password))
self.assert_valid_password(user, saved=user.password)
else:
self.assert_valid_password(user, hash)
# don't need to check rest for most deployments
if TEST_MODE(max="default"):
continue
#-------------------------------------------------------
# make_password() correctly selects algorithm
#-------------------------------------------------------
alg = DjangoTranslator().passlib_to_django_name(scheme)
hash2 = make_password(secret, hasher=alg)
self.assertTrue(handler.verify(secret, hash2))
#-------------------------------------------------------
# check_password()+setter against known hash
#-------------------------------------------------------
# should call setter only if it needs_update
self.assertTrue(check_password(secret, hash, setter=setter))
self.assertEqual(setter.popstate(), [secret] if needs_update else [])
# should not call setter
self.assertFalse(check_password(other, hash, setter=setter))
self.assertEqual(setter.popstate(), [])
### check preferred kwd is ignored (feature we don't currently support fully)
##self.assertTrue(check_password(secret, hash, setter=setter, preferred='fooey'))
##self.assertEqual(setter.popstate(), [secret])
# TODO: get_hasher()
#-------------------------------------------------------
# identify_hasher() recognizes known hash
#-------------------------------------------------------
self.assertTrue(is_password_usable(hash))
name = DjangoTranslator().django_to_passlib_name(identify_hasher(hash).algorithm)
self.assertEqual(name, scheme)
class ExtensionBehaviorTest(DjangoBehaviorTest):
"""test model to verify passlib.ext.django conforms to it"""
descriptionPrefix = "verify extension behavior"
patched = True
config = dict(
schemes="sha256_crypt,md5_crypt,des_crypt",
deprecated="des_crypt",
)
def setUp(self):
super(ExtensionBehaviorTest, self).setUp()
self.load_extension(PASSLIB_CONFIG=self.config)
class DjangoExtensionTest(_ExtensionTest):
"""test the ``passlib.ext.django`` plugin"""
descriptionPrefix = "passlib.ext.django plugin"
#===================================================================
# monkeypatch testing
#===================================================================
def test_00_patch_control(self):
"""test set_django_password_context patch/unpatch"""
# check config="disabled"
self.load_extension(PASSLIB_CONFIG="disabled", check=False)
self.assert_unpatched()
# check legacy config=None
with self.assertWarningList("PASSLIB_CONFIG=None is deprecated"):
self.load_extension(PASSLIB_CONFIG=None, check=False)
self.assert_unpatched()
# try stock django 1.0 context
self.load_extension(PASSLIB_CONFIG="django-1.0", check=False)
self.assert_patched(context=django10_context)
# try to remove patch
self.unload_extension()
# patch to use stock django 1.4 context
self.load_extension(PASSLIB_CONFIG="django-1.4", check=False)
self.assert_patched(context=django14_context)
# try to remove patch again
self.unload_extension()
def test_01_overwrite_detection(self):
"""test detection of foreign monkeypatching"""
# NOTE: this sets things up, and spot checks two methods,
# this should be enough to verify patch manager is working.
# TODO: test unpatch behavior honors flag.
# configure plugin to use sample context
config = "[passlib]\nschemes=des_crypt\n"
self.load_extension(PASSLIB_CONFIG=config)
# setup helpers
import django.contrib.auth.models as models
from passlib.ext.django.models import adapter
def dummy():
pass
# mess with User.set_password, make sure it's detected
orig = models.User.set_password
models.User.set_password = dummy
with self.assertWarningList("another library has patched.*User\.set_password"):
adapter._manager.check_all()
models.User.set_password = orig
# mess with models.check_password, make sure it's detected
orig = models.check_password
models.check_password = dummy
with self.assertWarningList("another library has patched.*models:check_password"):
adapter._manager.check_all()
models.check_password = orig
def test_02_handler_wrapper(self):
"""test Hasher-compatible handler wrappers"""
from django.contrib.auth import hashers
passlib_to_django = DjangoTranslator().passlib_to_django
# should return native django hasher if available
if DJANGO_VERSION > (1,10):
self.assertRaises(ValueError, passlib_to_django, "hex_md5")
else:
hasher = passlib_to_django("hex_md5")
self.assertIsInstance(hasher, hashers.UnsaltedMD5PasswordHasher)
hasher = passlib_to_django("django_bcrypt")
self.assertIsInstance(hasher, hashers.BCryptPasswordHasher)
# otherwise should return wrapper
from passlib.hash import sha256_crypt
hasher = passlib_to_django("sha256_crypt")
self.assertEqual(hasher.algorithm, "passlib_sha256_crypt")
# and wrapper should return correct hash
encoded = hasher.encode("stub")
self.assertTrue(sha256_crypt.verify("stub", encoded))
self.assertTrue(hasher.verify("stub", encoded))
self.assertFalse(hasher.verify("xxxx", encoded))
# test wrapper accepts options
encoded = hasher.encode("stub", "abcd"*4, rounds=1234)
self.assertEqual(encoded, "$5$rounds=1234$abcdabcdabcdabcd$"
"v2RWkZQzctPdejyRqmmTDQpZN6wTh7.RUy9zF2LftT6")
self.assertEqual(hasher.safe_summary(encoded),
{'algorithm': 'sha256_crypt',
'salt': u('abcdab**********'),
'rounds': 1234,
'hash': u('v2RWkZ*************************************'),
})
#===================================================================
# PASSLIB_CONFIG settings
#===================================================================
def test_11_config_disabled(self):
"""test PASSLIB_CONFIG='disabled'"""
# test config=None (deprecated)
with self.assertWarningList("PASSLIB_CONFIG=None is deprecated"):
self.load_extension(PASSLIB_CONFIG=None, check=False)
self.assert_unpatched()
# test disabled config
self.load_extension(PASSLIB_CONFIG="disabled", check=False)
self.assert_unpatched()
def test_12_config_presets(self):
"""test PASSLIB_CONFIG='<preset>'"""
# test django presets
self.load_extension(PASSLIB_CONTEXT="django-default", check=False)
ctx = django16_context
self.assert_patched(ctx)
self.load_extension(PASSLIB_CONFIG="django-1.0", check=False)
self.assert_patched(django10_context)
self.load_extension(PASSLIB_CONFIG="django-1.4", check=False)
self.assert_patched(django14_context)
def test_13_config_defaults(self):
"""test PASSLIB_CONFIG default behavior"""
# check implicit default
from passlib.ext.django.utils import PASSLIB_DEFAULT
default = CryptContext.from_string(PASSLIB_DEFAULT)
self.load_extension()
self.assert_patched(PASSLIB_DEFAULT)
# check default preset
self.load_extension(PASSLIB_CONTEXT="passlib-default", check=False)
self.assert_patched(PASSLIB_DEFAULT)
# check explicit string
self.load_extension(PASSLIB_CONTEXT=PASSLIB_DEFAULT, check=False)
self.assert_patched(PASSLIB_DEFAULT)
def test_14_config_invalid(self):
"""test PASSLIB_CONFIG type checks"""
update_settings(PASSLIB_CONTEXT=123, PASSLIB_CONFIG=UNSET)
self.assertRaises(TypeError, __import__, 'passlib.ext.django.models')
self.unload_extension()
update_settings(PASSLIB_CONFIG="missing-preset", PASSLIB_CONTEXT=UNSET)
self.assertRaises(ValueError, __import__, 'passlib.ext.django.models')
#===================================================================
# PASSLIB_GET_CATEGORY setting
#===================================================================
def test_21_category_setting(self):
"""test PASSLIB_GET_CATEGORY parameter"""
# define config where rounds can be used to detect category
config = dict(
schemes = ["sha256_crypt"],
sha256_crypt__default_rounds = 1000,
staff__sha256_crypt__default_rounds = 2000,
superuser__sha256_crypt__default_rounds = 3000,
)
from passlib.hash import sha256_crypt
def run(**kwds):
"""helper to take in user opts, return rounds used in password"""
user = FakeUser(**kwds)
user.set_password("stub")
return sha256_crypt.from_string(user.password).rounds
# test default get_category
self.load_extension(PASSLIB_CONFIG=config)
self.assertEqual(run(), 1000)
self.assertEqual(run(is_staff=True), 2000)
self.assertEqual(run(is_superuser=True), 3000)
# test patch uses explicit get_category function
def get_category(user):
return user.first_name or None
self.load_extension(PASSLIB_CONTEXT=config,
PASSLIB_GET_CATEGORY=get_category)
self.assertEqual(run(), 1000)
self.assertEqual(run(first_name='other'), 1000)
self.assertEqual(run(first_name='staff'), 2000)
self.assertEqual(run(first_name='superuser'), 3000)
# test patch can disable get_category entirely
def get_category(user):
return None
self.load_extension(PASSLIB_CONTEXT=config,
PASSLIB_GET_CATEGORY=get_category)
self.assertEqual(run(), 1000)
self.assertEqual(run(first_name='other'), 1000)
self.assertEqual(run(first_name='staff', is_staff=True), 1000)
self.assertEqual(run(first_name='superuser', is_superuser=True), 1000)
# test bad value
self.assertRaises(TypeError, self.load_extension, PASSLIB_CONTEXT=config,
PASSLIB_GET_CATEGORY='x')
#===================================================================
# eoc
#===================================================================
#=============================================================================
# eof
#=============================================================================
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