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#!/usr/bin/env python3
# Unix SMB/CIFS implementation.
# Copyright (C) Andrew Bartlett 2023
# Copyright (C) Stefan Metzmacher 2020
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
import sys
import os
sys.path.insert(0, 'bin/python')
os.environ['PYTHONUNBUFFERED'] = '1'
from samba.dcerpc import krb5pac, claims
from samba.ndr import ndr_pack, ndr_unpack, ndr_print
from samba.tests import TestCase
class PacClaimsTests(TestCase):
pac_data_uncompressed = bytes.fromhex("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")
pac_data_compressed = bytes.fromhex("080000000000000001000000f8010000880000000000000006000000100000008002000000000000070000001000000090020000000000000a0000001e000000a0020000000000000c000000b0000000c0020000000000000d0000006002000070030000000000001100000008000000d005000000000000120000001c000000d80500000000000001100800cccccccce801000000000000000002000000000000000000ffffffffffffff7fffffffffffffff7f50b330913c60d90150739abb0561d90150338a863d81d90114001400040002000000000008000200000000000c00020000000000100002000000000014000200000000001800020000000000ad04000001020000010000001c00020020000000000000000000000000000000000000001e002000200002000a000c00240002002800020000000000000000001000000000000000000000000000000000000000000000000000000000000000020000002c0002000000000000000000000000000a000000000000000a000000370032003000660064003300630033005f00360000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001000000010200000700000010000000000000000f000000410042004100520054004c00450054002d00440043002d00570049004e000000060000000000000005000000570049004e00320032000000040000000104000000000005150000003f1ba8749a54499be10ea459020000003000020007000000340002000700000005000000010500000000000515000000000000000000000000000000f10100000100000001010000000000120100000010000000ace7b599ff30aa486b52983210000000b50e9bea014545c97eca0b978097ee903c60d9011400370032003000660064003300630033005f0036000000380018002200500003000000140078001c00900000000000370032003000660064003300630033005f0036004000770069006e00320032002e006500780061006d0070006c0065002e0063006f006d00570049004e00320032002e004500580041004d0050004c0045002e0043004f004d00000000000000370032003000660064003300630033005f003600000000000105000000000005150000003f1ba8749a54499be10ea459ad0400000000000001100800cccccccc500200000000000000000200290200000400020004000000282000000000000000000000000000002902000073778788878808880700080007800800060007000700070887770780080088008870070008000808000080000000008070787787770076770867868788000000000000000000000000000000000000000000000000000000000000000000000000000000000008000000000000000000000000000000000000000000000000007700080080000000870000000000000085070000000000007476800000000000750587000800000066078000000080706677880080008060878708000000008000800000000000800000000000000000000000000000000000000000000000006080080000000070000000000000000000000000000000000000000000000000fd74eaf001add6213aecf4346587eec48c323e3e1a5a32042eecf243669a581e383d2940e80e383c294463b8c0b49024f1def20df819586b086cd2ab98700923386674845663ef57e91718110c1ad4c0ac88912126d2180545e98670ea2aa002052aa54189cc318d26c46b667f18b6876262a9a4985ecdf76e5161033fd457ba020075360c837aaa3aa82749ee8152420999b553c60195be5e5c35c4330557538772972a7d527aeca1fc6b2951ca254ac83960272a930f3194892d4729eff48e48ccfb929329ff501c356c0e8ed18471ec70986c31da86a8090b4022c1db257514fdba4347532146648d4f99f9065e0d9a0d90d80f38389c39cb9ebe6d4e5e681e5a8a5418f591f1dbb7594a3f2aa3220ced1cd18cb49cffcc2ff18eef6caf443663640c566400001200000002000000010000000105000000000005150000003f1ba8749a54499be10ea459ad04000000000000")
def test_unpack_raw(self):
pac_unpacked_raw = ndr_unpack(krb5pac.PAC_DATA_RAW, self.pac_data_uncompressed)
self.assertEqual(pac_unpacked_raw.num_buffers, 8)
self.assertEqual(pac_unpacked_raw.version, 0)
def confirm_uncompressed_claims(self, claim_metadata):
self.assertEqual(claim_metadata.uncompressed_claims_set_size,
344)
claims_set = claim_metadata.claims_set.claims.claims
self.assertEqual(claims_set.claims_array_count,
1)
claim_arrays = claims_set.claims_arrays
self.assertEqual(claim_arrays[0].claims_source_type,
claims.CLAIMS_SOURCE_TYPE_AD)
self.assertEqual(claim_arrays[0].claims_count,
3)
claim_entries = claim_arrays[0].claim_entries
self.assertEqual(claim_entries[0].id,
'720fd3c3_9')
self.assertEqual(claim_entries[0].type,
claims.CLAIM_TYPE_BOOLEAN)
self.assertEqual(claim_entries[0].values.value_count,
1)
self.assertEqual(claim_entries[0].values.values[0],
1)
self.assertEqual(claim_entries[1].id,
'720fd3c3_7')
self.assertEqual(claim_entries[1].type,
claims.CLAIM_TYPE_STRING)
self.assertEqual(claim_entries[1].values.value_count,
3)
self.assertEqual(claim_entries[1].values.values[0],
"foo")
self.assertEqual(claim_entries[1].values.values[1],
"bar")
self.assertEqual(claim_entries[1].values.values[2],
"baz")
self.assertEqual(claim_entries[2].id,
'720fd3c3_8')
self.assertEqual(claim_entries[2].type,
claims.CLAIM_TYPE_UINT64)
self.assertEqual(claim_entries[2].values.value_count,
4)
self.assertEqual(claim_entries[2].values.values[0],
655369)
self.assertEqual(claim_entries[2].values.values[1],
65543)
self.assertEqual(claim_entries[2].values.values[2],
65542)
self.assertEqual(claim_entries[2].values.values[3],
65536)
def test_unpack_claims_pac_uncompressed(self):
pac = ndr_unpack(krb5pac.PAC_DATA, self.pac_data_uncompressed)
self.assertEqual(pac.num_buffers, 8)
self.assertEqual(pac.version, 0)
self.assertEqual(pac.buffers[0].type, krb5pac.PAC_TYPE_LOGON_INFO)
self.assertEqual(pac.buffers[0].info.info.info3.base.account_name.string, "720fd3c3_10")
self.assertEqual(pac.buffers[5].type, krb5pac.PAC_TYPE_CLIENT_CLAIMS_INFO)
self.assertIsNotNone(pac.buffers[5].info.remaining)
client_claims = ndr_unpack(claims.CLAIMS_SET_METADATA_NDR, pac.buffers[5].info.remaining)
claim_metadata = client_claims.claims.metadata
self.assertEqual(pac.buffers[6].type, krb5pac.PAC_TYPE_ATTRIBUTES_INFO)
self.assertEqual(pac.buffers[7].type, krb5pac.PAC_TYPE_REQUESTER_SID)
self.assertEqual(claim_metadata.compression_format,
claims.CLAIMS_COMPRESSION_FORMAT_NONE)
self.confirm_uncompressed_claims(claim_metadata)
def confirm_compressed_claims(self, claim_metadata):
self.assertEqual(claim_metadata.uncompressed_claims_set_size,
8232)
claims_set = claim_metadata.claims_set.claims.claims
self.assertEqual(claims_set.claims_array_count,
1)
claim_arrays = claims_set.claims_arrays
self.assertEqual(claim_arrays[0].claims_source_type,
claims.CLAIMS_SOURCE_TYPE_AD)
self.assertEqual(claim_arrays[0].claims_count,
5)
claim_entries = claim_arrays[0].claim_entries
self.assertEqual(claim_entries[0].id,
'720fd3c3_4')
self.assertEqual(claim_entries[0].type,
claims.CLAIM_TYPE_BOOLEAN)
self.assertEqual(claim_entries[0].values.value_count,
1)
self.assertEqual(claim_entries[0].values.values[0],
1)
self.assertEqual(claim_entries[1].id,
'720fd3c3_0')
self.assertEqual(claim_entries[1].type,
claims.CLAIM_TYPE_STRING)
self.assertEqual(claim_entries[1].values.value_count,
4)
self.assertEqual(claim_entries[1].values.values[0],
"A first value.")
self.assertEqual(claim_entries[1].values.values[1],
"A second value.")
self.assertEqual(claim_entries[1].values.values[2],
"A third value.")
self.assertEqual(claim_entries[2].id,
'720fd3c3_1')
self.assertEqual(claim_entries[2].type,
claims.CLAIM_TYPE_STRING)
self.assertEqual(claim_entries[2].values.value_count,
3)
self.assertEqual(claim_entries[2].values.values[0],
"DC=win22,DC=example,DC=com")
self.assertEqual(claim_entries[2].values.values[1],
"CN=Users,DC=win22,DC=example,DC=com")
self.assertEqual(claim_entries[2].values.values[2],
"CN=Computers,DC=win22,DC=example,DC=com")
self.assertEqual(claim_entries[3].id,
'720fd3c3_2')
self.assertEqual(claim_entries[3].type,
claims.CLAIM_TYPE_UINT64)
self.assertEqual(claim_entries[3].values.value_count,
4)
self.assertEqual(claim_entries[3].values.values[0],
655369)
self.assertEqual(claim_entries[3].values.values[1],
65543)
self.assertEqual(claim_entries[3].values.values[2],
65542)
self.assertEqual(claim_entries[3].values.values[3],
65536)
def test_unpack_claims_pac_compressed(self):
pac = ndr_unpack(krb5pac.PAC_DATA, self.pac_data_compressed)
self.assertEqual(pac.num_buffers, 8)
self.assertEqual(pac.version, 0)
self.assertEqual(pac.buffers[0].type, krb5pac.PAC_TYPE_LOGON_INFO)
self.assertEqual(pac.buffers[0].info.info.info3.base.account_name.string, "720fd3c3_6")
self.assertEqual(pac.buffers[5].type, krb5pac.PAC_TYPE_CLIENT_CLAIMS_INFO)
self.assertIsNotNone(pac.buffers[5].info.remaining)
client_claims = ndr_unpack(claims.CLAIMS_SET_METADATA_NDR, pac.buffers[5].info.remaining)
claim_metadata = client_claims.claims.metadata
self.assertEqual(pac.buffers[6].type, krb5pac.PAC_TYPE_ATTRIBUTES_INFO)
self.assertEqual(pac.buffers[7].type, krb5pac.PAC_TYPE_REQUESTER_SID)
self.assertEqual(claim_metadata.compression_format,
claims.CLAIMS_COMPRESSION_FORMAT_XPRESS_HUFF)
self.assertEqual(claim_metadata.claims_set_size,
553)
self.confirm_compressed_claims(claim_metadata)
def test_repack_claims_pac_uncompressed(self):
pac = ndr_unpack(krb5pac.PAC_DATA, self.pac_data_uncompressed)
client_claims = ndr_unpack(claims.CLAIMS_SET_METADATA_NDR, pac.buffers[5].info.remaining)
client_claims_bytes1 = ndr_pack(client_claims)
client_claims2 = ndr_unpack(claims.CLAIMS_SET_METADATA_NDR, client_claims_bytes1)
client_claims_bytes2 = ndr_pack(client_claims2)
self.assertEqual(client_claims_bytes1, client_claims_bytes2)
claim_metadata = client_claims2.claims.metadata
self.assertEqual(claim_metadata.compression_format,
claims.CLAIMS_COMPRESSION_FORMAT_NONE)
self.confirm_uncompressed_claims(claim_metadata)
def test_repack_claims_pac_compressed(self):
pac = ndr_unpack(krb5pac.PAC_DATA, self.pac_data_compressed)
client_claims = ndr_unpack(claims.CLAIMS_SET_METADATA_NDR, pac.buffers[5].info.remaining)
client_claims_bytes1 = ndr_pack(client_claims)
client_claims2 = ndr_unpack(claims.CLAIMS_SET_METADATA_NDR, client_claims_bytes1)
client_claims_bytes2 = ndr_pack(client_claims2)
self.assertEqual(client_claims_bytes1, client_claims_bytes2)
# This confirms that after compression and decompression, we
# still get the values we expect
claim_metadata = client_claims2.claims.metadata
self.assertEqual(claim_metadata.compression_format,
claims.CLAIMS_COMPRESSION_FORMAT_XPRESS_HUFF)
self.assertEqual(claim_metadata.claims_set_size,
585)
self.confirm_compressed_claims(claim_metadata)
def test_repack_claims_pac_uncompressed_set_compressed(self):
pac = ndr_unpack(krb5pac.PAC_DATA, self.pac_data_uncompressed)
client_claims = ndr_unpack(claims.CLAIMS_SET_METADATA_NDR, pac.buffers[5].info.remaining)
client_claims.claims.metadata.compression_format = claims.CLAIMS_COMPRESSION_FORMAT_XPRESS_HUFF
client_claims_bytes1 = ndr_pack(client_claims)
client_claims2 = ndr_unpack(claims.CLAIMS_SET_METADATA_NDR, client_claims_bytes1)
# Confirm that despite setting FORMAT_XPRESS_HUFF compression is never attempted
self.assertEqual(client_claims2.claims.metadata.uncompressed_claims_set_size,
344)
self.assertEqual(client_claims2.claims.metadata.claims_set_size,
344)
self.assertEqual(client_claims2.claims.metadata.compression_format,
claims.CLAIMS_COMPRESSION_FORMAT_NONE)
# Confirm we match the originally uncompressed sample
claim_metadata = client_claims2.claims.metadata
self.confirm_uncompressed_claims(claim_metadata)
# Finally confirm a re-pack gets identical bytes
client_claims_bytes2 = ndr_pack(client_claims2)
self.assertEqual(client_claims_bytes1, client_claims_bytes2)
def test_repack_claims_pac_compressed_set_uncompressed(self):
pac = ndr_unpack(krb5pac.PAC_DATA, self.pac_data_compressed)
client_claims = ndr_unpack(claims.CLAIMS_SET_METADATA_NDR, pac.buffers[5].info.remaining)
client_claims.claims.metadata.compression_format = claims.CLAIMS_COMPRESSION_FORMAT_NONE
client_claims_bytes1 = ndr_pack(client_claims)
client_claims2 = ndr_unpack(claims.CLAIMS_SET_METADATA_NDR, client_claims_bytes1)
# Confirm that by setting FORMAT_NONE compression is never attempted
self.assertEqual(client_claims2.claims.metadata.uncompressed_claims_set_size,
8232)
self.assertEqual(client_claims2.claims.metadata.claims_set_size,
8232)
self.assertEqual(client_claims2.claims.metadata.compression_format,
claims.CLAIMS_COMPRESSION_FORMAT_NONE)
# This confirms that after pack and unpack, despite being
# larger than the compression minimum we get add the data and
# the values we expect for the originally-compressed data
claim_metadata = client_claims2.claims.metadata
self.confirm_compressed_claims(claim_metadata)
# Finally confirm a re-pack gets identical bytes
client_claims_bytes2 = ndr_pack(client_claims2)
self.assertEqual(client_claims_bytes1, client_claims_bytes2)
def test_repack_claims_pac_uncompressed_uninit_lengths(self):
pac = ndr_unpack(krb5pac.PAC_DATA, self.pac_data_uncompressed)
client_claims = ndr_unpack(claims.CLAIMS_SET_METADATA_NDR, pac.buffers[5].info.remaining)
# This matches what we expect the KDC to do, which is to ask for compression always
client_claims.claims.metadata.compression_format = claims.CLAIMS_COMPRESSION_FORMAT_XPRESS_HUFF
client_claims.claims.metadata.uncompressed_claims_set_size = 0
client_claims.claims.metadata.claims_set_size = 0
client_claims_bytes1 = ndr_pack(client_claims)
client_claims2 = ndr_unpack(claims.CLAIMS_SET_METADATA_NDR, client_claims_bytes1)
# Confirm that the NDR code did not compress and sent FORMAT_NONE on the wire
self.assertEqual(client_claims2.claims.metadata.uncompressed_claims_set_size,
344)
self.assertEqual(client_claims2.claims.metadata.claims_set_size,
344)
self.assertEqual(client_claims2.claims.metadata.compression_format,
claims.CLAIMS_COMPRESSION_FORMAT_NONE)
claim_metadata = client_claims2.claims.metadata
self.confirm_uncompressed_claims(claim_metadata)
# Finally confirm a re-pack gets identical bytes
client_claims_bytes2 = ndr_pack(client_claims2)
self.assertEqual(client_claims_bytes1, client_claims_bytes2)
def test_repack_claims_pac_compressed_uninit_lengths(self):
pac = ndr_unpack(krb5pac.PAC_DATA, self.pac_data_compressed)
client_claims = ndr_unpack(claims.CLAIMS_SET_METADATA_NDR, pac.buffers[5].info.remaining)
client_claims.claims.metadata.compression_format = claims.CLAIMS_COMPRESSION_FORMAT_XPRESS_HUFF
client_claims.claims.metadata.uncompressed_claims_set_size = 0
client_claims.claims.metadata.claims_set_size = 0
client_claims_bytes1 = ndr_pack(client_claims)
client_claims2 = ndr_unpack(claims.CLAIMS_SET_METADATA_NDR, client_claims_bytes1)
# Confirm that despite no lenghts being set, the data is compressed correctly
self.assertEqual(client_claims2.claims.metadata.uncompressed_claims_set_size,
8232)
self.assertEqual(client_claims2.claims.metadata.claims_set_size,
585)
self.assertEqual(client_claims2.claims.metadata.compression_format,
claims.CLAIMS_COMPRESSION_FORMAT_XPRESS_HUFF)
claim_metadata = client_claims2.claims.metadata
self.confirm_compressed_claims(claim_metadata)
# Finally confirm a re-pack gets identical bytes
client_claims_bytes2 = ndr_pack(client_claims2)
self.assertEqual(client_claims_bytes1, client_claims_bytes2)
if __name__ == '__main__':
import unittest
unittest.main()
|
