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      1 /*
      2  * Author: Joshua Brindle <jbrindle (at) tresys.com>
      3  *         Chad Sellers <csellers (at) tresys.com>
      4  *
      5  * Copyright (C) 2006 Tresys Technology, LLC
      6  *
      7  *  This library is free software; you can redistribute it and/or
      8  *  modify it under the terms of the GNU Lesser General Public
      9  *  License as published by the Free Software Foundation; either
     10  *  version 2.1 of the License, or (at your option) any later version.
     11  *
     12  *  This library is distributed in the hope that it will be useful,
     13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
     14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     15  *  Lesser General Public License for more details.
     16  *
     17  *  You should have received a copy of the GNU Lesser General Public
     18  *  License along with this library; if not, write to the Free Software
     19  *  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
     20  */
     21 
     22 #include "parse_util.h"
     23 #include "helpers.h"
     24 #include "test-common.h"
     25 
     26 #include <sepol/policydb/policydb.h>
     27 #include <sepol/policydb/link.h>
     28 
     29 #include <CUnit/Basic.h>
     30 #include <stdlib.h>
     31 
     32 /* Tests for types:
     33  * Test for each of these for
     34  * - type in appropriate symtab (global and decl)
     35  * - datum in the decl symtab has correct type bitmap (if attr)
     36  * - primary is set correctly
     37  * - scope datum has correct decl ids
     38  * Tests:
     39  * - type in base, no modules
     40  * - type in base optional, no modules
     41  * - type a in base, b in module
     42  * - type a in base optional, b in module
     43  * - type a in base, b in module optional
     44  * - type a in base optional, b in module optional
     45  * - attr in base, no modules
     46  * - attr in base optional, no modules
     47  * - attr a in base, b in module
     48  * - attr a in base optional, b in module
     49  * - attr a in base, b in module optional
     50  * - attr a in base optional, b in module optional
     51  * - attr a declared in base, added to in module
     52  * - attr a declared in base, added to in module optional
     53  * - attr a declared in base, added to in 2 modules
     54  * - attr a declared in base, added to in 2 modules (optional and global)
     55  * - attr a declared in base optional, added to in module
     56  * - attr a declared in base optional, added to in module optional
     57  * - attr a added to in base optional, declared in module
     58  * - attr a added to in base optional, declared in module optional
     59  * - attr a added to in base optional, declared in module, added to in other module
     60  * - attr a added to in base optional, declared in module optional, added to in other module
     61  * - attr a added to in base optional, declared in module , added to in other module optional
     62  * - attr a added to in base optional, declared in module optional, added to in other module optional
     63  * - alias in base of primary type in base, no modules
     64  * - alias in base optional of primary type in base, no modules
     65  * - alias in base optional of primary type in base optional
     66  * - alias in module of primary type in base
     67  * - alias in module optional of primary type in base
     68  * - alias in module optional of primary type in base optional
     69  * - alias in module of primary type in module
     70  * - alias in module optional of primary type in module
     71  * - alias in module optional of primary type in module optional
     72  * - alias a in base, b in module, primary type in base
     73  * - alias a in base, b in module, primary type in module
     74  * - alias a in base optional, b in module, primary type in base
     75  * - alias a in base optional, b in module, primary type in module
     76  * - alias a in base, b in module optional, primary type in base
     77  * - alias a in base, b in module optional, primary type in module
     78  * - alias a in base optional, b in module optional, primary type in base
     79  * - alias a in base optional, b in module optional, primary type in module
     80  * - alias a in base, required in module, primary type in base
     81  * - alias a in base, required in base optional, primary type in base
     82  * - alias a in base, required in module optional, primary type in base
     83  * - alias a in module, required in base optional, primary type in base
     84  * - alias a in module, required in module optional, primary type in base
     85  * - alias a in base optional, required in module, primary type in base
     86  * - alias a in base optional, required in different base optional, primary type in base
     87  * - alias a in base optional, required in module optional, primary type in base
     88  * - alias a in module optional, required in base optional, primary type in base
     89  * - alias a in module optional, required in module optional, primary type in base
     90  * - alias a in module, required in base optional, primary type in module
     91  * - alias a in module, required in module optional, primary type in module
     92  * - alias a in base optional, required in module, primary type in module
     93  * - alias a in base optional, required in different base optional, primary type in module
     94  * - alias a in base optional, required in module optional, primary type in module
     95  * - alias a in module optional, required in base optional, primary type in module
     96  * - alias a in module optional, required in module optional, primary type in module
     97  */
     98 
     99 /* Don't pass in decls from global blocks since symbols aren't stored in their symtab */
    100 static void test_type_datum(policydb_t * p, const char *id, unsigned int *decls, int len, unsigned int primary)
    101 {
    102 	int i;
    103 	unsigned int value;
    104 	type_datum_t *type;
    105 
    106 	/* just test the type datums for each decl to see if it is what we expect */
    107 	type = hashtab_search(p->p_types.table, id);
    108 
    109 	CU_ASSERT_FATAL(type != NULL);
    110 	CU_ASSERT(type->primary == primary);
    111 	CU_ASSERT(type->flavor == TYPE_TYPE);
    112 
    113 	value = type->s.value;
    114 
    115 	for (i = 0; i < len; i++) {
    116 		type = hashtab_search(p->decl_val_to_struct[decls[i] - 1]->p_types.table, id);
    117 		CU_ASSERT_FATAL(type != NULL);
    118 		CU_ASSERT(type->primary == primary);
    119 		CU_ASSERT(type->flavor == TYPE_TYPE);
    120 		CU_ASSERT(type->s.value == value);
    121 	}
    122 
    123 }
    124 
    125 void base_type_tests(policydb_t * base)
    126 {
    127 	unsigned int decls[2];
    128 	const char *types[2];
    129 
    130 	/* These tests look at types in the base only, the desire is to ensure that
    131 	 * types are not destroyed or otherwise removed during the link process.
    132 	 * if this happens these tests won't work anyway since we are using types to
    133 	 * mark blocks */
    134 
    135 	/**** test for g_b_type_1 in base and decl 1 (global) ****/
    136 	decls[0] = (test_find_decl_by_sym(base, SYM_TYPES, "tag_g_b"))->decl_id;
    137 	test_sym_presence(base, "g_b_type_1", SYM_TYPES, SCOPE_DECL, decls, 1);
    138 	test_type_datum(base, "g_b_type_1", NULL, 0, 1);
    139 	/* this attr is in the same decl as the type */
    140 	test_sym_presence(base, "g_b_attr_1", SYM_TYPES, SCOPE_DECL, decls, 1);
    141 	types[0] = "g_b_type_1";
    142 	test_attr_types(base, "g_b_attr_1", NULL, types, 1);
    143 
    144 	/**** test for o1_b_type_1 in optional (decl 2) ****/
    145 	decls[0] = (test_find_decl_by_sym(base, SYM_TYPES, "tag_o1_b"))->decl_id;
    146 	test_sym_presence(base, "o1_b_type_1", SYM_TYPES, SCOPE_DECL, decls, 1);
    147 	test_type_datum(base, "o1_b_type_1", NULL, 0, 1);
    148 	/* this attr is in the same decl as the type */
    149 	test_sym_presence(base, "o1_b_attr_1", SYM_TYPES, SCOPE_DECL, decls, 1);
    150 	types[0] = "o1_b_type_1";
    151 	test_attr_types(base, "o1_b_attr_1", base->decl_val_to_struct[decls[0] - 1], types, 1);
    152 
    153 	/* tests for aliases */
    154 	decls[0] = (test_find_decl_by_sym(base, SYM_TYPES, "tag_g_b"))->decl_id;
    155 	test_sym_presence(base, "g_b_alias_1", SYM_TYPES, SCOPE_DECL, decls, 1);
    156 	test_alias_datum(base, "g_b_alias_1", "g_b_type_3", 1, 0);
    157 	decls[0] = (test_find_decl_by_sym(base, SYM_TYPES, "tag_o6_b"))->decl_id;
    158 	test_sym_presence(base, "g_b_alias_2", SYM_TYPES, SCOPE_DECL, decls, 1);
    159 	test_alias_datum(base, "g_b_alias_2", "g_b_type_3", 1, 0);
    160 
    161 }
    162 
    163 void module_type_tests(policydb_t * base)
    164 {
    165 	unsigned int decls[2];
    166 	const char *types[2];
    167 	avrule_decl_t *d;
    168 
    169 	/* These tests look at types that were copied from modules or attributes
    170 	 * that were modified and declared in modules and base. These apply to
    171 	 * declarations and modifications in and out of optionals. These tests
    172 	 * should ensure that types and attributes are correctly copied from modules
    173 	 * and that attribute type sets are correctly copied and mapped. */
    174 
    175 	/* note: scope for attributes is currently smashed if the attribute is declared
    176 	 * somewhere so the scope test only looks at global, the type bitmap test looks
    177 	 * at the appropriate decl symtab */
    178 
    179 	/* test for type in module 1 (global) */
    180 	decls[0] = (test_find_decl_by_sym(base, SYM_TYPES, "tag_g_m1"))->decl_id;
    181 	test_sym_presence(base, "g_m1_type_1", SYM_TYPES, SCOPE_DECL, decls, 1);
    182 	test_type_datum(base, "g_m1_type_1", NULL, 0, 1);
    183 	/* attr has is in the same decl as the above type */
    184 	test_sym_presence(base, "g_m1_attr_1", SYM_TYPES, SCOPE_DECL, decls, 1);
    185 	types[0] = "g_m1_type_1";
    186 	types[1] = "g_m1_type_2";
    187 	test_attr_types(base, "g_m1_attr_1", NULL, types, 2);
    188 
    189 	/* test for type in module 1 (optional) */
    190 	decls[0] = (test_find_decl_by_sym(base, SYM_TYPES, "tag_o1_m1"))->decl_id;
    191 	test_sym_presence(base, "o1_m1_type_1", SYM_TYPES, SCOPE_DECL, decls, 1);
    192 	test_type_datum(base, "o1_m1_type_1", NULL, 0, 1);
    193 	/* attr has is in the same decl as the above type */
    194 	test_sym_presence(base, "o1_m1_attr_1", SYM_TYPES, SCOPE_DECL, decls, 1);
    195 	types[0] = "o1_m1_type_2";
    196 	test_attr_types(base, "o1_m1_attr_1", base->decl_val_to_struct[decls[0] - 1], types, 1);
    197 
    198 	/* test for attr declared in base, added to in module (global).
    199 	 * Since these are both global it'll be merged in the main symtab */
    200 	decls[0] = (test_find_decl_by_sym(base, SYM_TYPES, "tag_g_b"))->decl_id;
    201 	test_sym_presence(base, "g_b_attr_3", SYM_TYPES, SCOPE_DECL, decls, 1);
    202 	types[0] = "g_m1_type_3";
    203 	test_attr_types(base, "g_b_attr_3", NULL, types, 1);
    204 
    205 	/* test for attr declared in base, added to in module (optional). */
    206 	decls[0] = (test_find_decl_by_sym(base, SYM_TYPES, "tag_g_b"))->decl_id;
    207 	test_sym_presence(base, "g_b_attr_4", SYM_TYPES, SCOPE_DECL, decls, 1);
    208 
    209 	decls[0] = (test_find_decl_by_sym(base, SYM_TYPES, "tag_o1_m1"))->decl_id;
    210 	types[0] = "o1_m1_type_3";
    211 	test_attr_types(base, "g_b_attr_4", base->decl_val_to_struct[decls[0] - 1], types, 1);
    212 
    213 	/* test for attr declared in base, added to in 2 modules (global). (merged in main symtab) */
    214 	decls[0] = (test_find_decl_by_sym(base, SYM_TYPES, "tag_g_b"))->decl_id;
    215 	test_sym_presence(base, "g_b_attr_5", SYM_TYPES, SCOPE_DECL, decls, 1);
    216 	types[0] = "g_m1_type_4";
    217 	types[1] = "g_m2_type_4";
    218 	test_attr_types(base, "g_b_attr_5", NULL, types, 2);
    219 
    220 	/* test for attr declared in base, added to in 2 modules (optional/global). */
    221 	decls[0] = (test_find_decl_by_sym(base, SYM_TYPES, "tag_g_b"))->decl_id;
    222 	test_sym_presence(base, "g_b_attr_6", SYM_TYPES, SCOPE_DECL, decls, 1);
    223 	/* module 2 was global to its type is in main symtab */
    224 	types[0] = "g_m2_type_5";
    225 	test_attr_types(base, "g_b_attr_6", NULL, types, 1);
    226 	d = (test_find_decl_by_sym(base, SYM_TYPES, "tag_o3_m1"));
    227 	types[0] = "o3_m1_type_2";
    228 	test_attr_types(base, "g_b_attr_6", d, types, 1);
    229 
    230 	/* test for attr declared in base optional, added to in module (global). */
    231 	decls[0] = (test_find_decl_by_sym(base, SYM_TYPES, "tag_o4_b"))->decl_id;
    232 	test_sym_presence(base, "o4_b_attr_1", SYM_TYPES, SCOPE_DECL, decls, 1);
    233 	types[0] = "g_m1_type_5";
    234 	test_attr_types(base, "o4_b_attr_1", NULL, types, 1);
    235 
    236 	/* test for attr declared in base optional, added to in module (optional). */
    237 	decls[0] = (test_find_decl_by_sym(base, SYM_TYPES, "tag_o1_b"))->decl_id;
    238 	test_sym_presence(base, "o1_b_attr_2", SYM_TYPES, SCOPE_DECL, decls, 1);
    239 	d = test_find_decl_by_sym(base, SYM_TYPES, "tag_o1_m1");
    240 	types[0] = "o1_m1_type_5";
    241 	test_attr_types(base, "o1_b_attr_2", d, types, 1);
    242 
    243 	/* test for attr declared in module, added to in base optional */
    244 	decls[0] = (test_find_decl_by_sym(base, SYM_TYPES, "tag_g_m1"))->decl_id;
    245 	test_sym_presence(base, "g_m1_attr_2", SYM_TYPES, SCOPE_DECL, decls, 1);
    246 	d = test_find_decl_by_sym(base, SYM_TYPES, "tag_o1_b");
    247 	types[0] = "o1_b_type_2";
    248 	test_attr_types(base, "g_m1_attr_2", d, types, 1);
    249 
    250 	/* test for attr declared in module optional, added to in base optional */
    251 	decls[0] = (test_find_decl_by_sym(base, SYM_TYPES, "tag_o3_m1"))->decl_id;
    252 	test_sym_presence(base, "o3_m1_attr_1", SYM_TYPES, SCOPE_DECL, decls, 1);
    253 	d = test_find_decl_by_sym(base, SYM_TYPES, "tag_o4_b");
    254 	types[0] = "o4_b_type_1";
    255 	test_attr_types(base, "o3_m1_attr_1", d, types, 1);
    256 
    257 	/* attr a added to in base optional, declared/added to in module, added to in other module */
    258 	/* first the module declare/add and module 2 add (since its global it'll be in the main symtab */
    259 	decls[0] = (test_find_decl_by_sym(base, SYM_TYPES, "tag_g_m1"))->decl_id;
    260 	test_sym_presence(base, "g_m1_attr_3", SYM_TYPES, SCOPE_DECL, decls, 1);
    261 	types[0] = "g_m1_type_6";
    262 	types[1] = "g_m2_type_3";
    263 	test_attr_types(base, "g_m1_attr_3", NULL, types, 2);
    264 	/* base add */
    265 	d = test_find_decl_by_sym(base, SYM_TYPES, "tag_o4_b");
    266 	types[0] = "o4_b_type_2";
    267 	test_attr_types(base, "g_m1_attr_3", d, types, 1);
    268 
    269 	/* attr a added to in base optional, declared/added in module optional, added to in other module */
    270 	d = test_find_decl_by_sym(base, SYM_TYPES, "tag_o3_m1");
    271 	decls[0] = d->decl_id;
    272 	test_sym_presence(base, "o3_m1_attr_2", SYM_TYPES, SCOPE_DECL, decls, 1);
    273 	types[0] = "o3_m1_type_3";
    274 	test_attr_types(base, "o3_m1_attr_2", d, types, 1);
    275 	/* module 2's type will be in the main symtab */
    276 	types[0] = "g_m2_type_6";
    277 	test_attr_types(base, "o3_m1_attr_2", NULL, types, 1);
    278 	/* base add */
    279 	d = test_find_decl_by_sym(base, SYM_TYPES, "tag_o2_b");
    280 	types[0] = "o2_b_type_1";
    281 	test_attr_types(base, "o3_m1_attr_2", d, types, 1);
    282 
    283 	/* attr a added to in base optional, declared/added in module , added to in other module optional */
    284 	decls[0] = (test_find_decl_by_sym(base, SYM_TYPES, "tag_g_m1"))->decl_id;
    285 	test_sym_presence(base, "g_m1_attr_4", SYM_TYPES, SCOPE_DECL, decls, 1);
    286 	types[0] = "g_m1_type_7";
    287 	test_attr_types(base, "g_m1_attr_4", NULL, types, 1);
    288 	/* module 2 */
    289 	d = test_find_decl_by_sym(base, SYM_TYPES, "tag_o2_m2");
    290 	types[0] = "o2_m2_type_1";
    291 	test_attr_types(base, "g_m1_attr_4", d, types, 1);
    292 	/* base add */
    293 	d = test_find_decl_by_sym(base, SYM_TYPES, "tag_o5_b");
    294 	types[0] = "o5_b_type_1";
    295 	test_attr_types(base, "g_m1_attr_4", d, types, 1);
    296 
    297 	/* attr a added to in base optional, declared/added in module optional, added to in other module optional */
    298 	d = test_find_decl_by_sym(base, SYM_TYPES, "tag_o4_m1");
    299 	decls[0] = d->decl_id;
    300 	test_sym_presence(base, "o4_m1_attr_1", SYM_TYPES, SCOPE_DECL, decls, 1);
    301 	types[0] = "o4_m1_type_1";
    302 	test_attr_types(base, "o4_m1_attr_1", d, types, 1);
    303 	/* module 2 */
    304 	d = test_find_decl_by_sym(base, SYM_TYPES, "tag_o2_m2");
    305 	types[0] = "o2_m2_type_2";
    306 	test_attr_types(base, "o4_m1_attr_1", d, types, 1);
    307 	/* base add */
    308 	d = test_find_decl_by_sym(base, SYM_TYPES, "tag_o5_b");
    309 	types[0] = "o5_b_type_2";
    310 	test_attr_types(base, "o4_m1_attr_1", d, types, 1);
    311 
    312 	/* tests for aliases */
    313 	decls[0] = (test_find_decl_by_sym(base, SYM_TYPES, "tag_g_m1"))->decl_id;
    314 	test_sym_presence(base, "g_m_alias_1", SYM_TYPES, SCOPE_DECL, decls, 1);
    315 	test_alias_datum(base, "g_m_alias_1", "g_b_type_3", 1, 0);
    316 
    317 }
    318