# Copyright 2015, Tresys Technology, LLC # # SPDX-License-Identifier: GPL-2.0-only # import unittest import os from unittest.mock import Mock from setools import PermissionMap, TERuletype from setools.exception import PermissionMapParseError, RuleTypeError, \ UnmappedClass, UnmappedPermission from .policyrep.util import compile_policy class PermissionMapTest(unittest.TestCase): """Permission map unit tests.""" @classmethod def setUpClass(cls): cls.p = compile_policy("tests/permmap.conf") @classmethod def tearDownClass(cls): os.unlink(cls.p.path) def validate_permmap_entry(self, permmap, cls, perm, direction, weight, enabled): """Validate a permission map entry and settings.""" self.assertIn(cls, permmap) self.assertIn(perm, permmap[cls]) self.assertIn('direction', permmap[cls][perm]) self.assertIn('weight', permmap[cls][perm]) self.assertIn('enabled', permmap[cls][perm]) self.assertEqual(permmap[cls][perm]['direction'], direction) self.assertEqual(permmap[cls][perm]['weight'], weight) if enabled: self.assertTrue(permmap[cls][perm]['enabled']) else: self.assertFalse(permmap[cls][perm]['enabled']) def test_001_load(self): """PermMap open from path.""" permmap = PermissionMap("tests/perm_map") # validate permission map contents self.assertEqual(5, len(permmap._permmap)) # class infoflow self.assertIn("infoflow", permmap._permmap) self.assertEqual(6, len(permmap._permmap['infoflow'])) self.validate_permmap_entry(permmap._permmap, 'infoflow', 'low_w', 'w', 1, True) self.validate_permmap_entry(permmap._permmap, 'infoflow', 'med_w', 'w', 5, True) self.validate_permmap_entry(permmap._permmap, 'infoflow', 'hi_w', 'w', 10, True) self.validate_permmap_entry(permmap._permmap, 'infoflow', 'low_r', 'r', 1, True) self.validate_permmap_entry(permmap._permmap, 'infoflow', 'med_r', 'r', 5, True) self.validate_permmap_entry(permmap._permmap, 'infoflow', 'hi_r', 'r', 10, True) # class infoflow2 self.assertIn("infoflow2", permmap._permmap) self.assertEqual(7, len(permmap._permmap['infoflow2'])) self.validate_permmap_entry(permmap._permmap, 'infoflow2', 'low_w', 'w', 1, True) self.validate_permmap_entry(permmap._permmap, 'infoflow2', 'med_w', 'w', 5, True) self.validate_permmap_entry(permmap._permmap, 'infoflow2', 'hi_w', 'w', 10, True) self.validate_permmap_entry(permmap._permmap, 'infoflow2', 'low_r', 'r', 1, True) self.validate_permmap_entry(permmap._permmap, 'infoflow2', 'med_r', 'r', 5, True) self.validate_permmap_entry(permmap._permmap, 'infoflow2', 'hi_r', 'r', 10, True) self.validate_permmap_entry(permmap._permmap, 'infoflow2', 'super', 'b', 10, True) # class infoflow3 self.assertIn("infoflow3", permmap._permmap) self.assertEqual(1, len(permmap._permmap['infoflow3'])) self.validate_permmap_entry(permmap._permmap, 'infoflow3', 'null', 'n', 1, True) # class file self.assertIn("file", permmap._permmap) self.assertEqual(2, len(permmap._permmap['file'])) self.validate_permmap_entry(permmap._permmap, 'file', 'execute', 'r', 10, True) self.validate_permmap_entry(permmap._permmap, 'file', 'entrypoint', 'r', 10, True) # class process self.assertIn("process", permmap._permmap) self.assertEqual(1, len(permmap._permmap['process'])) self.validate_permmap_entry(permmap._permmap, 'process', 'transition', 'w', 10, True) def test_002_load_invalid(self): """PermMap load completely wrong file type""" with self.assertRaises(PermissionMapParseError): PermissionMap("setup.py") def test_002_load_negative_class_count(self): """PermMap load negative class count""" with self.assertRaises(PermissionMapParseError): PermissionMap("tests/invalid_perm_maps/negative-classcount") def test_003_load_non_number_class_count(self): """PermMap load non-number class count""" with self.assertRaises(PermissionMapParseError): PermissionMap("tests/invalid_perm_maps/non-number-classcount") def test_004_load_extra_class(self): """PermMap load extra class""" with self.assertRaises(PermissionMapParseError): PermissionMap("tests/invalid_perm_maps/extra-class") def test_005_load_bad_class_keyword(self): """PermMap load bad class keyword""" with self.assertRaises(PermissionMapParseError): PermissionMap("tests/invalid_perm_maps/bad-class-keyword") # test 6: bad class name(?) def test_007_load_negative_perm_count(self): """PermMap load negative permission count""" with self.assertRaises(PermissionMapParseError): PermissionMap("tests/invalid_perm_maps/negative-permcount") def test_008_load_bad_perm_count(self): """PermMap load bad permission count""" with self.assertRaises(PermissionMapParseError): PermissionMap("tests/invalid_perm_maps/bad-permcount") # test 9: bad perm name(?) def test_010_load_extra_perms(self): """PermMap load negative permission count""" with self.assertRaises(PermissionMapParseError): PermissionMap("tests/invalid_perm_maps/extra-perms") def test_011_load_invalid_flow_direction(self): """PermMap load invalid flow direction""" with self.assertRaises(PermissionMapParseError): PermissionMap("tests/invalid_perm_maps/invalid-flowdir") def test_012_load_bad_perm_weight(self): """PermMap load too high/low permission weight""" with self.assertRaises(PermissionMapParseError): PermissionMap("tests/invalid_perm_maps/bad-perm-weight-high") with self.assertRaises(PermissionMapParseError): PermissionMap("tests/invalid_perm_maps/bad-perm-weight-low") def test_013_load_invalid_weight(self): """PermMap load invalid permission weight""" with self.assertRaises(PermissionMapParseError): PermissionMap("tests/invalid_perm_maps/invalid-perm-weight") def test_100_set_weight(self): """PermMap set weight""" permmap = PermissionMap("tests/perm_map") self.validate_permmap_entry(permmap._permmap, 'infoflow2', 'low_w', 'w', 1, True) permmap.set_weight("infoflow2", "low_w", 10) self.validate_permmap_entry(permmap._permmap, 'infoflow2', 'low_w', 'w', 10, True) def test_101_set_weight_low(self): """PermMap set weight low""" permmap = PermissionMap("tests/perm_map") with self.assertRaises(ValueError): permmap.set_weight("infoflow2", "low_w", 0) with self.assertRaises(ValueError): permmap.set_weight("infoflow2", "low_w", -10) def test_102_set_weight_low(self): """PermMap set weight high""" permmap = PermissionMap("tests/perm_map") with self.assertRaises(ValueError): permmap.set_weight("infoflow2", "low_w", 11) with self.assertRaises(ValueError): permmap.set_weight("infoflow2", "low_w", 50) def test_103_set_weight_unmapped_class(self): """PermMap set weight unmapped class""" permmap = PermissionMap("tests/perm_map") with self.assertRaises(UnmappedClass): permmap.set_weight("UNMAPPED", "write", 10) def test_104_set_weight_unmapped_permission(self): """PermMap set weight unmapped class""" permmap = PermissionMap("tests/perm_map") with self.assertRaises(UnmappedPermission): permmap.set_weight("infoflow2", "UNMAPPED", 10) def test_110_set_direction(self): """PermMap set direction""" permmap = PermissionMap("tests/perm_map") self.validate_permmap_entry(permmap._permmap, 'infoflow2', 'low_w', 'w', 1, True) permmap.set_direction("infoflow2", "low_w", "r") self.validate_permmap_entry(permmap._permmap, 'infoflow2', 'low_w', 'r', 1, True) def test_111_set_direction_invalid(self): """PermMap set invalid direction""" permmap = PermissionMap("tests/perm_map") with self.assertRaises(ValueError): permmap.set_direction("infoflow2", "low_w", "X") def test_112_set_direction_unmapped_class(self): """PermMap set direction unmapped class""" permmap = PermissionMap("tests/perm_map") with self.assertRaises(UnmappedClass): permmap.set_direction("UNMAPPED", "write", "w") def test_113_set_direction_unmapped_permission(self): """PermMap set direction unmapped class""" permmap = PermissionMap("tests/perm_map") with self.assertRaises(UnmappedPermission): permmap.set_direction("infoflow2", "UNMAPPED", "w") def test_120_exclude_perm(self): """PermMap exclude permission.""" permmap = PermissionMap("tests/perm_map") permmap.exclude_permission("infoflow", "med_w") self.validate_permmap_entry(permmap._permmap, 'infoflow', 'med_w', 'w', 5, False) def test_121_exclude_perm_unmapped_class(self): """PermMap exclude permission unmapped class.""" permmap = PermissionMap("tests/perm_map") with self.assertRaises(UnmappedClass): permmap.exclude_permission("UNMAPPED", "med_w") def test_122_exclude_perm_unmapped_perm(self): """PermMap exclude permission unmapped permission.""" permmap = PermissionMap("tests/perm_map") with self.assertRaises(UnmappedPermission): permmap.exclude_permission("infoflow", "UNMAPPED") def test_123_include_perm(self): """PermMap include permission.""" permmap = PermissionMap("tests/perm_map") permmap.exclude_permission("infoflow", "med_w") self.validate_permmap_entry(permmap._permmap, 'infoflow', 'med_w', 'w', 5, False) permmap.include_permission("infoflow", "med_w") self.validate_permmap_entry(permmap._permmap, 'infoflow', 'med_w', 'w', 5, True) def test_124_include_perm_unmapped_class(self): """PermMap include permission unmapped class.""" permmap = PermissionMap("tests/perm_map") with self.assertRaises(UnmappedClass): permmap.include_permission("UNMAPPED", "med_w") def test_125_include_perm_unmapped_perm(self): """PermMap include permission unmapped permission.""" permmap = PermissionMap("tests/perm_map") with self.assertRaises(UnmappedPermission): permmap.include_permission("infoflow", "UNMAPPED") def test_130_exclude_class(self): """PermMap exclude class.""" permmap = PermissionMap("tests/perm_map") permmap.exclude_class("file") self.validate_permmap_entry(permmap._permmap, 'file', 'execute', 'r', 10, False) self.validate_permmap_entry(permmap._permmap, 'file', 'entrypoint', 'r', 10, False) def test_131_exclude_class_unmapped_class(self): """PermMap exclude class unmapped class.""" permmap = PermissionMap("tests/perm_map") with self.assertRaises(UnmappedClass): permmap.exclude_class("UNMAPPED") def test_132_include_class(self): """PermMap exclude class.""" permmap = PermissionMap("tests/perm_map") permmap.exclude_class("file") self.validate_permmap_entry(permmap._permmap, 'file', 'execute', 'r', 10, False) self.validate_permmap_entry(permmap._permmap, 'file', 'entrypoint', 'r', 10, False) permmap.include_class("file") self.validate_permmap_entry(permmap._permmap, 'file', 'execute', 'r', 10, True) self.validate_permmap_entry(permmap._permmap, 'file', 'entrypoint', 'r', 10, True) def test_133_include_class_unmapped_class(self): """PermMap include class unmapped class.""" permmap = PermissionMap("tests/perm_map") with self.assertRaises(UnmappedClass): permmap.include_class("UNMAPPED") def test_140_weight_read_only(self): """PermMap get weight of read-only rule.""" rule = Mock() rule.ruletype = TERuletype.allow rule.tclass = "infoflow" rule.perms = set(["med_r", "hi_r"]) permmap = PermissionMap("tests/perm_map") r, w = permmap.rule_weight(rule) self.assertEqual(r, 10) self.assertEqual(w, 0) def test_141_weight_write_only(self): """PermMap get weight of write-only rule.""" rule = Mock() rule.ruletype = TERuletype.allow rule.tclass = "infoflow" rule.perms = set(["low_w", "med_w"]) permmap = PermissionMap("tests/perm_map") r, w = permmap.rule_weight(rule) self.assertEqual(r, 0) self.assertEqual(w, 5) def test_142_weight_both(self): """PermMap get weight of both rule.""" rule = Mock() rule.ruletype = TERuletype.allow rule.tclass = "infoflow" rule.perms = set(["low_r", "hi_w"]) permmap = PermissionMap("tests/perm_map") r, w = permmap.rule_weight(rule) self.assertEqual(r, 1) self.assertEqual(w, 10) def test_143_weight_none(self): """PermMap get weight of none rule.""" rule = Mock() rule.ruletype = TERuletype.allow rule.tclass = "infoflow3" rule.perms = set(["null"]) permmap = PermissionMap("tests/perm_map") r, w = permmap.rule_weight(rule) self.assertEqual(r, 0) self.assertEqual(w, 0) def test_144_weight_unmapped_class(self): """PermMap get weight of rule with unmapped class.""" rule = Mock() rule.ruletype = TERuletype.allow rule.tclass = "unmapped" rule.perms = set(["null"]) permmap = PermissionMap("tests/perm_map") self.assertRaises(UnmappedClass, permmap.rule_weight, rule) def test_145_weight_unmapped_permission(self): """PermMap get weight of rule with unmapped permission.""" rule = Mock() rule.ruletype = TERuletype.allow rule.tclass = "infoflow" rule.perms = set(["low_r", "unmapped"]) permmap = PermissionMap("tests/perm_map") self.assertRaises(UnmappedPermission, permmap.rule_weight, rule) def test_146_weight_wrong_rule_type(self): """PermMap get weight of rule with wrong rule type.""" rule = Mock() rule.ruletype = TERuletype.type_transition rule.tclass = "infoflow" permmap = PermissionMap("tests/perm_map") self.assertRaises(RuleTypeError, permmap.rule_weight, rule) def test_147_weight_excluded_permission(self): """PermMap get weight of a rule with excluded permission.""" rule = Mock() rule.ruletype = TERuletype.allow rule.tclass = "infoflow" rule.perms = set(["med_r", "hi_r"]) permmap = PermissionMap("tests/perm_map") permmap.exclude_permission("infoflow", "hi_r") r, w = permmap.rule_weight(rule) self.assertEqual(r, 5) self.assertEqual(w, 0) def test_148_weight_excluded_class(self): """PermMap get weight of a rule with excluded class.""" rule = Mock() rule.ruletype = TERuletype.allow rule.tclass = "infoflow" rule.perms = set(["low_r", "med_r", "hi_r", "low_w", "med_w", "hi_w"]) permmap = PermissionMap("tests/perm_map") permmap.exclude_class("infoflow") r, w = permmap.rule_weight(rule) self.assertEqual(r, 0) self.assertEqual(w, 0) def test_150_map_policy(self): """PermMap create mappings for classes/perms in a policy.""" permmap = PermissionMap("tests/perm_map") permmap.map_policy(self.p) self.validate_permmap_entry(permmap._permmap, 'infoflow2', 'new_perm', 'u', 1, True) self.assertIn("new_class", permmap._permmap) self.assertEqual(1, len(permmap._permmap['new_class'])) self.validate_permmap_entry(permmap._permmap, 'new_class', 'new_class_perm', 'u', 1, True)