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e8fda61a57
Signed-off-by: Rob van der Linde <rob@catalyst.net.nz> Reviewed-by: Douglas Bagnall <douglas.bagnall@catalyst.net.nz> Reviewed-by: Andrew Bartlett <abartlet@samba.org>
294 lines
12 KiB
Python
294 lines
12 KiB
Python
# Tests for Tests for source4/dsdb/samdb/ldb_modules/password_hash.c
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#
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# Copyright (C) Catalyst IT Ltd. 2017
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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"""
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Tests for source4/dsdb/samdb/ldb_modules/password_hash.c
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These tests need to be run in an environment in which
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io->ac->gpg_key_ids != NULL, so that the gpg supplemental credentials
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are generated. The functional level needs to be >= 2008 so that the
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kerberos newer keys are generated.
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"""
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from samba.tests.password_hash import (
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PassWordHashTests,
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get_package,
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USER_PASS,
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USER_NAME
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)
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from samba.ndr import ndr_unpack
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from samba.dcerpc import drsblobs
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import binascii
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from samba.tests.pso import PasswordSettings
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import samba
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class PassWordHashGpgmeTests(PassWordHashTests):
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def test_default_supplementalCredentials(self):
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self.add_user()
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if not self.lp.get("password hash gpg key ids"):
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self.skipTest("No password hash gpg key ids, " +
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"Primary:SambaGPG will not be generated")
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sc = self.get_supplemental_creds()
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# Check that we got all the expected supplemental credentials
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# And they are in the expected order.
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size = len(sc.sub.packages)
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self.assertEqual(5, size)
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(pos, package) = get_package(sc, "Primary:Kerberos-Newer-Keys")
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self.assertEqual(1, pos)
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self.assertEqual("Primary:Kerberos-Newer-Keys", package.name)
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(pos, package) = get_package(sc, "Primary:Kerberos")
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self.assertEqual(2, pos)
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self.assertEqual("Primary:Kerberos", package.name)
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(pos, wd_package) = get_package(sc, "Primary:WDigest")
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self.assertEqual(3, pos)
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self.assertEqual("Primary:WDigest", wd_package.name)
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(pos, package) = get_package(sc, "Packages")
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self.assertEqual(4, pos)
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self.assertEqual("Packages", package.name)
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(pos, package) = get_package(sc, "Primary:SambaGPG")
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self.assertEqual(5, pos)
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self.assertEqual("Primary:SambaGPG", package.name)
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# Check that the WDigest values are correct.
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#
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digests = ndr_unpack(drsblobs.package_PrimaryWDigestBlob,
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binascii.a2b_hex(wd_package.data))
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self.check_wdigests(digests)
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def test_supplementalCredentials_cleartext(self):
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self.add_user(clear_text=True)
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if not self.lp.get("password hash gpg key ids"):
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self.skipTest("No password hash gpg key ids, " +
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"Primary:SambaGPG will not be generated")
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sc = self.get_supplemental_creds()
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# Check that we got all the expected supplemental credentials
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# And they are in the expected order.
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size = len(sc.sub.packages)
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self.assertEqual(6, size)
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(pos, package) = get_package(sc, "Primary:Kerberos-Newer-Keys")
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self.assertEqual(1, pos)
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self.assertEqual("Primary:Kerberos-Newer-Keys", package.name)
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(pos, package) = get_package(sc, "Primary:Kerberos")
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self.assertEqual(2, pos)
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self.assertEqual("Primary:Kerberos", package.name)
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(pos, wd_package) = get_package(sc, "Primary:WDigest")
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self.assertEqual(3, pos)
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self.assertEqual("Primary:WDigest", wd_package.name)
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(pos, ct_package) = get_package(sc, "Primary:CLEARTEXT")
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self.assertEqual(4, pos)
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self.assertEqual("Primary:CLEARTEXT", ct_package.name)
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(pos, package) = get_package(sc, "Packages")
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self.assertEqual(5, pos)
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self.assertEqual("Packages", package.name)
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(pos, package) = get_package(sc, "Primary:SambaGPG")
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self.assertEqual(6, pos)
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self.assertEqual("Primary:SambaGPG", package.name)
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# Check that the WDigest values are correct.
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#
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digests = ndr_unpack(drsblobs.package_PrimaryWDigestBlob,
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binascii.a2b_hex(wd_package.data))
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self.check_wdigests(digests)
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# Check the clear text value is correct.
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ct = ndr_unpack(drsblobs.package_PrimaryCLEARTEXTBlob,
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binascii.a2b_hex(ct_package.data))
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self.assertEqual(USER_PASS.encode('utf-16-le'), ct.cleartext)
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def assert_cleartext(self, expect_cleartext, password=None):
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"""Checks cleartext is (or isn't) returned as expected"""
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sc = self.get_supplemental_creds()
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if expect_cleartext:
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(pos, ct_package) = get_package(sc, "Primary:CLEARTEXT")
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self.assertTrue(ct_package is not None, "Failed to retrieve cleartext")
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# Check the clear-text value is correct.
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ct = ndr_unpack(drsblobs.package_PrimaryCLEARTEXTBlob,
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binascii.a2b_hex(ct_package.data))
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self.assertEqual(password.encode('utf-16-le'), ct.cleartext)
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else:
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ct_package = get_package(sc, "Primary:CLEARTEXT")
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self.assertTrue(ct_package is None,
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"Got cleartext when we shouldn't have")
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def test_supplementalCredentials_cleartext_pso(self):
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"""Checks that a PSO's cleartext setting can override the domain's"""
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# create a user that stores plain-text passwords
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self.add_user(clear_text=True)
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# check that clear-text is present in the supplementary-credentials
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self.assert_cleartext(expect_cleartext=True, password=USER_PASS)
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# create a PSO overriding the plain-text setting & apply it to the user
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no_plaintext_pso = PasswordSettings("no-plaintext-PSO", self.ldb,
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precedence=200,
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store_plaintext=False)
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self.addCleanup(self.ldb.delete, no_plaintext_pso.dn)
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userdn = "cn=" + USER_NAME + ",cn=users," + self.base_dn
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no_plaintext_pso.apply_to(userdn)
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# set the password to update the cleartext password stored
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new_password = samba.generate_random_password(32, 32)
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self.ldb.setpassword("(sAMAccountName=%s)" % USER_NAME, new_password)
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# this time cleartext shouldn't be in the supplementary creds
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self.assert_cleartext(expect_cleartext=False)
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# unapply PSO, update password, and check we get the cleartext again
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no_plaintext_pso.unapply(userdn)
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new_password = samba.generate_random_password(32, 32)
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self.ldb.setpassword("(sAMAccountName=%s)" % USER_NAME, new_password)
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self.assert_cleartext(expect_cleartext=True, password=new_password)
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# Now update the domain setting and check we no longer get cleartext
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self.set_store_cleartext(False)
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new_password = samba.generate_random_password(32, 32)
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self.ldb.setpassword("(sAMAccountName=%s)" % USER_NAME, new_password)
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self.assert_cleartext(expect_cleartext=False)
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# create a PSO overriding the domain setting & apply it to the user
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plaintext_pso = PasswordSettings("plaintext-PSO", self.ldb,
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precedence=100, store_plaintext=True)
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self.addCleanup(self.ldb.delete, plaintext_pso.dn)
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plaintext_pso.apply_to(userdn)
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new_password = samba.generate_random_password(32, 32)
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self.ldb.setpassword("(sAMAccountName=%s)" % USER_NAME, new_password)
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self.assert_cleartext(expect_cleartext=True, password=new_password)
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def test_userPassword_multiple_hashes(self):
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self.add_user(options=[(
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"password hash userPassword schemes",
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"CryptSHA512 CryptSHA256 CryptSHA512")])
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sc = self.get_supplemental_creds()
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# Check that we got all the expected supplemental credentials
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# And they are in the expected order.
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size = len(sc.sub.packages)
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self.assertEqual(6, size)
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(pos, package) = get_package(sc, "Primary:Kerberos-Newer-Keys")
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self.assertEqual(1, pos)
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self.assertEqual("Primary:Kerberos-Newer-Keys", package.name)
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(pos, package) = get_package(sc, "Primary:Kerberos")
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self.assertEqual(2, pos)
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self.assertEqual("Primary:Kerberos", package.name)
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(pos, wp_package) = get_package(sc, "Primary:WDigest")
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self.assertEqual(3, pos)
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self.assertEqual("Primary:WDigest", wp_package.name)
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(pos, up_package) = get_package(sc, "Primary:userPassword")
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self.assertEqual(4, pos)
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self.assertEqual("Primary:userPassword", up_package.name)
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(pos, package) = get_package(sc, "Packages")
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self.assertEqual(5, pos)
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self.assertEqual("Packages", package.name)
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(pos, package) = get_package(sc, "Primary:SambaGPG")
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self.assertEqual(6, pos)
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self.assertEqual("Primary:SambaGPG", package.name)
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# Check that the WDigest values are correct.
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#
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digests = ndr_unpack(drsblobs.package_PrimaryWDigestBlob,
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binascii.a2b_hex(wp_package.data))
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self.check_wdigests(digests)
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# Check that the userPassword hashes are computed correctly
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# Expect three hashes to be calculated
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up = ndr_unpack(drsblobs.package_PrimaryUserPasswordBlob,
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binascii.a2b_hex(up_package.data))
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self.checkUserPassword(up, [
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("{CRYPT}", "6", None),
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("{CRYPT}", "5", None),
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("{CRYPT}", "6", None)
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])
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self.checkNtHash(USER_PASS, up.current_nt_hash.hash)
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def test_userPassword_multiple_hashes_rounds_specified(self):
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self.add_user(options=[(
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"password hash userPassword schemes",
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"CryptSHA512:rounds=5120 CryptSHA256:rounds=2560 CryptSHA512:rounds=5122")])
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sc = self.get_supplemental_creds()
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# Check that we got all the expected supplemental credentials
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# And they are in the expected order.
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size = len(sc.sub.packages)
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self.assertEqual(6, size)
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(pos, package) = get_package(sc, "Primary:Kerberos-Newer-Keys")
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self.assertEqual(1, pos)
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self.assertEqual("Primary:Kerberos-Newer-Keys", package.name)
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(pos, package) = get_package(sc, "Primary:Kerberos")
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self.assertEqual(2, pos)
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self.assertEqual("Primary:Kerberos", package.name)
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(pos, wp_package) = get_package(sc, "Primary:WDigest")
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self.assertEqual(3, pos)
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self.assertEqual("Primary:WDigest", wp_package.name)
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(pos, up_package) = get_package(sc, "Primary:userPassword")
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self.assertEqual(4, pos)
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self.assertEqual("Primary:userPassword", up_package.name)
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(pos, package) = get_package(sc, "Packages")
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self.assertEqual(5, pos)
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self.assertEqual("Packages", package.name)
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(pos, package) = get_package(sc, "Primary:SambaGPG")
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self.assertEqual(6, pos)
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self.assertEqual("Primary:SambaGPG", package.name)
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# Check that the WDigest values are correct.
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#
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digests = ndr_unpack(drsblobs.package_PrimaryWDigestBlob,
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binascii.a2b_hex(wp_package.data))
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self.check_wdigests(digests)
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# Check that the userPassword hashes are computed correctly
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# Expect three hashes to be calculated
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up = ndr_unpack(drsblobs.package_PrimaryUserPasswordBlob,
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binascii.a2b_hex(up_package.data))
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self.checkUserPassword(up, [
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("{CRYPT}", "6", 5120),
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("{CRYPT}", "5", 2560),
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("{CRYPT}", "6", 5122)
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])
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self.checkNtHash(USER_PASS, up.current_nt_hash.hash)
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