Mike Salvatore | 4d944bc | 2019-11-05 16:43:29 -0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-only |
| 2 | /* |
| 3 | * KUnit tests for AppArmor's policy unpack. |
| 4 | */ |
| 5 | |
| 6 | #include <kunit/test.h> |
| 7 | |
| 8 | #include "include/policy.h" |
| 9 | #include "include/policy_unpack.h" |
| 10 | |
| 11 | #define TEST_STRING_NAME "TEST_STRING" |
| 12 | #define TEST_STRING_DATA "testing" |
| 13 | #define TEST_STRING_BUF_OFFSET \ |
| 14 | (3 + strlen(TEST_STRING_NAME) + 1) |
| 15 | |
| 16 | #define TEST_U32_NAME "U32_TEST" |
| 17 | #define TEST_U32_DATA ((u32)0x01020304) |
| 18 | #define TEST_NAMED_U32_BUF_OFFSET \ |
| 19 | (TEST_STRING_BUF_OFFSET + 3 + strlen(TEST_STRING_DATA) + 1) |
| 20 | #define TEST_U32_BUF_OFFSET \ |
| 21 | (TEST_NAMED_U32_BUF_OFFSET + 3 + strlen(TEST_U32_NAME) + 1) |
| 22 | |
| 23 | #define TEST_U16_OFFSET (TEST_U32_BUF_OFFSET + 3) |
| 24 | #define TEST_U16_DATA ((u16)(TEST_U32_DATA >> 16)) |
| 25 | |
| 26 | #define TEST_U64_NAME "U64_TEST" |
| 27 | #define TEST_U64_DATA ((u64)0x0102030405060708) |
| 28 | #define TEST_NAMED_U64_BUF_OFFSET (TEST_U32_BUF_OFFSET + sizeof(u32) + 1) |
| 29 | #define TEST_U64_BUF_OFFSET \ |
| 30 | (TEST_NAMED_U64_BUF_OFFSET + 3 + strlen(TEST_U64_NAME) + 1) |
| 31 | |
| 32 | #define TEST_BLOB_NAME "BLOB_TEST" |
| 33 | #define TEST_BLOB_DATA "\xde\xad\x00\xbe\xef" |
| 34 | #define TEST_BLOB_DATA_SIZE (ARRAY_SIZE(TEST_BLOB_DATA)) |
| 35 | #define TEST_NAMED_BLOB_BUF_OFFSET (TEST_U64_BUF_OFFSET + sizeof(u64) + 1) |
| 36 | #define TEST_BLOB_BUF_OFFSET \ |
| 37 | (TEST_NAMED_BLOB_BUF_OFFSET + 3 + strlen(TEST_BLOB_NAME) + 1) |
| 38 | |
| 39 | #define TEST_ARRAY_NAME "ARRAY_TEST" |
| 40 | #define TEST_ARRAY_SIZE 16 |
| 41 | #define TEST_NAMED_ARRAY_BUF_OFFSET \ |
| 42 | (TEST_BLOB_BUF_OFFSET + 5 + TEST_BLOB_DATA_SIZE) |
| 43 | #define TEST_ARRAY_BUF_OFFSET \ |
| 44 | (TEST_NAMED_ARRAY_BUF_OFFSET + 3 + strlen(TEST_ARRAY_NAME) + 1) |
| 45 | |
| 46 | struct policy_unpack_fixture { |
| 47 | struct aa_ext *e; |
| 48 | size_t e_size; |
| 49 | }; |
| 50 | |
| 51 | struct aa_ext *build_aa_ext_struct(struct policy_unpack_fixture *puf, |
| 52 | struct kunit *test, size_t buf_size) |
| 53 | { |
| 54 | char *buf; |
| 55 | struct aa_ext *e; |
| 56 | |
| 57 | buf = kunit_kzalloc(test, buf_size, GFP_USER); |
| 58 | KUNIT_EXPECT_NOT_ERR_OR_NULL(test, buf); |
| 59 | |
| 60 | e = kunit_kmalloc(test, sizeof(*e), GFP_USER); |
| 61 | KUNIT_EXPECT_NOT_ERR_OR_NULL(test, e); |
| 62 | |
| 63 | e->start = buf; |
| 64 | e->end = e->start + buf_size; |
| 65 | e->pos = e->start; |
| 66 | |
| 67 | *buf = AA_NAME; |
| 68 | *(buf + 1) = strlen(TEST_STRING_NAME) + 1; |
| 69 | strcpy(buf + 3, TEST_STRING_NAME); |
| 70 | |
| 71 | buf = e->start + TEST_STRING_BUF_OFFSET; |
| 72 | *buf = AA_STRING; |
| 73 | *(buf + 1) = strlen(TEST_STRING_DATA) + 1; |
| 74 | strcpy(buf + 3, TEST_STRING_DATA); |
| 75 | |
| 76 | buf = e->start + TEST_NAMED_U32_BUF_OFFSET; |
| 77 | *buf = AA_NAME; |
| 78 | *(buf + 1) = strlen(TEST_U32_NAME) + 1; |
| 79 | strcpy(buf + 3, TEST_U32_NAME); |
| 80 | *(buf + 3 + strlen(TEST_U32_NAME) + 1) = AA_U32; |
| 81 | *((u32 *)(buf + 3 + strlen(TEST_U32_NAME) + 2)) = TEST_U32_DATA; |
| 82 | |
| 83 | buf = e->start + TEST_NAMED_U64_BUF_OFFSET; |
| 84 | *buf = AA_NAME; |
| 85 | *(buf + 1) = strlen(TEST_U64_NAME) + 1; |
| 86 | strcpy(buf + 3, TEST_U64_NAME); |
| 87 | *(buf + 3 + strlen(TEST_U64_NAME) + 1) = AA_U64; |
| 88 | *((u64 *)(buf + 3 + strlen(TEST_U64_NAME) + 2)) = TEST_U64_DATA; |
| 89 | |
| 90 | buf = e->start + TEST_NAMED_BLOB_BUF_OFFSET; |
| 91 | *buf = AA_NAME; |
| 92 | *(buf + 1) = strlen(TEST_BLOB_NAME) + 1; |
| 93 | strcpy(buf + 3, TEST_BLOB_NAME); |
| 94 | *(buf + 3 + strlen(TEST_BLOB_NAME) + 1) = AA_BLOB; |
| 95 | *(buf + 3 + strlen(TEST_BLOB_NAME) + 2) = TEST_BLOB_DATA_SIZE; |
| 96 | memcpy(buf + 3 + strlen(TEST_BLOB_NAME) + 6, |
| 97 | TEST_BLOB_DATA, TEST_BLOB_DATA_SIZE); |
| 98 | |
| 99 | buf = e->start + TEST_NAMED_ARRAY_BUF_OFFSET; |
| 100 | *buf = AA_NAME; |
| 101 | *(buf + 1) = strlen(TEST_ARRAY_NAME) + 1; |
| 102 | strcpy(buf + 3, TEST_ARRAY_NAME); |
| 103 | *(buf + 3 + strlen(TEST_ARRAY_NAME) + 1) = AA_ARRAY; |
| 104 | *((u16 *)(buf + 3 + strlen(TEST_ARRAY_NAME) + 2)) = TEST_ARRAY_SIZE; |
| 105 | |
| 106 | return e; |
| 107 | } |
| 108 | |
| 109 | static int policy_unpack_test_init(struct kunit *test) |
| 110 | { |
| 111 | size_t e_size = TEST_ARRAY_BUF_OFFSET + sizeof(u16) + 1; |
| 112 | struct policy_unpack_fixture *puf; |
| 113 | |
| 114 | puf = kunit_kmalloc(test, sizeof(*puf), GFP_USER); |
| 115 | KUNIT_EXPECT_NOT_ERR_OR_NULL(test, puf); |
| 116 | |
| 117 | puf->e_size = e_size; |
| 118 | puf->e = build_aa_ext_struct(puf, test, e_size); |
| 119 | |
| 120 | test->priv = puf; |
| 121 | return 0; |
| 122 | } |
| 123 | |
| 124 | static void policy_unpack_test_inbounds_when_inbounds(struct kunit *test) |
| 125 | { |
| 126 | struct policy_unpack_fixture *puf = test->priv; |
| 127 | |
| 128 | KUNIT_EXPECT_TRUE(test, inbounds(puf->e, 0)); |
| 129 | KUNIT_EXPECT_TRUE(test, inbounds(puf->e, puf->e_size / 2)); |
| 130 | KUNIT_EXPECT_TRUE(test, inbounds(puf->e, puf->e_size)); |
| 131 | } |
| 132 | |
| 133 | static void policy_unpack_test_inbounds_when_out_of_bounds(struct kunit *test) |
| 134 | { |
| 135 | struct policy_unpack_fixture *puf = test->priv; |
| 136 | |
| 137 | KUNIT_EXPECT_FALSE(test, inbounds(puf->e, puf->e_size + 1)); |
| 138 | } |
| 139 | |
| 140 | static void policy_unpack_test_unpack_array_with_null_name(struct kunit *test) |
| 141 | { |
| 142 | struct policy_unpack_fixture *puf = test->priv; |
| 143 | u16 array_size; |
| 144 | |
| 145 | puf->e->pos += TEST_ARRAY_BUF_OFFSET; |
| 146 | |
| 147 | array_size = unpack_array(puf->e, NULL); |
| 148 | |
| 149 | KUNIT_EXPECT_EQ(test, array_size, (u16)TEST_ARRAY_SIZE); |
| 150 | KUNIT_EXPECT_PTR_EQ(test, puf->e->pos, |
| 151 | puf->e->start + TEST_ARRAY_BUF_OFFSET + sizeof(u16) + 1); |
| 152 | } |
| 153 | |
| 154 | static void policy_unpack_test_unpack_array_with_name(struct kunit *test) |
| 155 | { |
| 156 | struct policy_unpack_fixture *puf = test->priv; |
| 157 | const char name[] = TEST_ARRAY_NAME; |
| 158 | u16 array_size; |
| 159 | |
| 160 | puf->e->pos += TEST_NAMED_ARRAY_BUF_OFFSET; |
| 161 | |
| 162 | array_size = unpack_array(puf->e, name); |
| 163 | |
| 164 | KUNIT_EXPECT_EQ(test, array_size, (u16)TEST_ARRAY_SIZE); |
| 165 | KUNIT_EXPECT_PTR_EQ(test, puf->e->pos, |
| 166 | puf->e->start + TEST_ARRAY_BUF_OFFSET + sizeof(u16) + 1); |
| 167 | } |
| 168 | |
| 169 | static void policy_unpack_test_unpack_array_out_of_bounds(struct kunit *test) |
| 170 | { |
| 171 | struct policy_unpack_fixture *puf = test->priv; |
| 172 | const char name[] = TEST_ARRAY_NAME; |
| 173 | u16 array_size; |
| 174 | |
| 175 | puf->e->pos += TEST_NAMED_ARRAY_BUF_OFFSET; |
| 176 | puf->e->end = puf->e->start + TEST_ARRAY_BUF_OFFSET + sizeof(u16); |
| 177 | |
| 178 | array_size = unpack_array(puf->e, name); |
| 179 | |
| 180 | KUNIT_EXPECT_EQ(test, array_size, (u16)0); |
| 181 | KUNIT_EXPECT_PTR_EQ(test, puf->e->pos, |
| 182 | puf->e->start + TEST_NAMED_ARRAY_BUF_OFFSET); |
| 183 | } |
| 184 | |
| 185 | static void policy_unpack_test_unpack_blob_with_null_name(struct kunit *test) |
| 186 | { |
| 187 | struct policy_unpack_fixture *puf = test->priv; |
| 188 | char *blob = NULL; |
| 189 | size_t size; |
| 190 | |
| 191 | puf->e->pos += TEST_BLOB_BUF_OFFSET; |
| 192 | size = unpack_blob(puf->e, &blob, NULL); |
| 193 | |
| 194 | KUNIT_ASSERT_EQ(test, size, TEST_BLOB_DATA_SIZE); |
| 195 | KUNIT_EXPECT_TRUE(test, |
| 196 | memcmp(blob, TEST_BLOB_DATA, TEST_BLOB_DATA_SIZE) == 0); |
| 197 | } |
| 198 | |
| 199 | static void policy_unpack_test_unpack_blob_with_name(struct kunit *test) |
| 200 | { |
| 201 | struct policy_unpack_fixture *puf = test->priv; |
| 202 | char *blob = NULL; |
| 203 | size_t size; |
| 204 | |
| 205 | puf->e->pos += TEST_NAMED_BLOB_BUF_OFFSET; |
| 206 | size = unpack_blob(puf->e, &blob, TEST_BLOB_NAME); |
| 207 | |
| 208 | KUNIT_ASSERT_EQ(test, size, TEST_BLOB_DATA_SIZE); |
| 209 | KUNIT_EXPECT_TRUE(test, |
| 210 | memcmp(blob, TEST_BLOB_DATA, TEST_BLOB_DATA_SIZE) == 0); |
| 211 | } |
| 212 | |
| 213 | static void policy_unpack_test_unpack_blob_out_of_bounds(struct kunit *test) |
| 214 | { |
| 215 | struct policy_unpack_fixture *puf = test->priv; |
| 216 | char *blob = NULL; |
| 217 | void *start; |
| 218 | int size; |
| 219 | |
| 220 | puf->e->pos += TEST_NAMED_BLOB_BUF_OFFSET; |
| 221 | start = puf->e->pos; |
| 222 | puf->e->end = puf->e->start + TEST_BLOB_BUF_OFFSET |
| 223 | + TEST_BLOB_DATA_SIZE - 1; |
| 224 | |
| 225 | size = unpack_blob(puf->e, &blob, TEST_BLOB_NAME); |
| 226 | |
| 227 | KUNIT_EXPECT_EQ(test, size, 0); |
| 228 | KUNIT_EXPECT_PTR_EQ(test, puf->e->pos, start); |
| 229 | } |
| 230 | |
| 231 | static void policy_unpack_test_unpack_str_with_null_name(struct kunit *test) |
| 232 | { |
| 233 | struct policy_unpack_fixture *puf = test->priv; |
| 234 | const char *string = NULL; |
| 235 | size_t size; |
| 236 | |
| 237 | puf->e->pos += TEST_STRING_BUF_OFFSET; |
| 238 | size = unpack_str(puf->e, &string, NULL); |
| 239 | |
| 240 | KUNIT_EXPECT_EQ(test, size, strlen(TEST_STRING_DATA) + 1); |
| 241 | KUNIT_EXPECT_STREQ(test, string, TEST_STRING_DATA); |
| 242 | } |
| 243 | |
| 244 | static void policy_unpack_test_unpack_str_with_name(struct kunit *test) |
| 245 | { |
| 246 | struct policy_unpack_fixture *puf = test->priv; |
| 247 | const char *string = NULL; |
| 248 | size_t size; |
| 249 | |
| 250 | size = unpack_str(puf->e, &string, TEST_STRING_NAME); |
| 251 | |
| 252 | KUNIT_EXPECT_EQ(test, size, strlen(TEST_STRING_DATA) + 1); |
| 253 | KUNIT_EXPECT_STREQ(test, string, TEST_STRING_DATA); |
| 254 | } |
| 255 | |
| 256 | static void policy_unpack_test_unpack_str_out_of_bounds(struct kunit *test) |
| 257 | { |
| 258 | struct policy_unpack_fixture *puf = test->priv; |
| 259 | const char *string = NULL; |
| 260 | void *start = puf->e->pos; |
| 261 | int size; |
| 262 | |
| 263 | puf->e->end = puf->e->pos + TEST_STRING_BUF_OFFSET |
| 264 | + strlen(TEST_STRING_DATA) - 1; |
| 265 | |
| 266 | size = unpack_str(puf->e, &string, TEST_STRING_NAME); |
| 267 | |
| 268 | KUNIT_EXPECT_EQ(test, size, 0); |
| 269 | KUNIT_EXPECT_PTR_EQ(test, puf->e->pos, start); |
| 270 | } |
| 271 | |
| 272 | static void policy_unpack_test_unpack_strdup_with_null_name(struct kunit *test) |
| 273 | { |
| 274 | struct policy_unpack_fixture *puf = test->priv; |
| 275 | char *string = NULL; |
| 276 | size_t size; |
| 277 | |
| 278 | puf->e->pos += TEST_STRING_BUF_OFFSET; |
| 279 | size = unpack_strdup(puf->e, &string, NULL); |
| 280 | |
| 281 | KUNIT_EXPECT_EQ(test, size, strlen(TEST_STRING_DATA) + 1); |
| 282 | KUNIT_EXPECT_FALSE(test, |
| 283 | ((uintptr_t)puf->e->start <= (uintptr_t)string) |
| 284 | && ((uintptr_t)string <= (uintptr_t)puf->e->end)); |
| 285 | KUNIT_EXPECT_STREQ(test, string, TEST_STRING_DATA); |
| 286 | } |
| 287 | |
| 288 | static void policy_unpack_test_unpack_strdup_with_name(struct kunit *test) |
| 289 | { |
| 290 | struct policy_unpack_fixture *puf = test->priv; |
| 291 | char *string = NULL; |
| 292 | size_t size; |
| 293 | |
| 294 | size = unpack_strdup(puf->e, &string, TEST_STRING_NAME); |
| 295 | |
| 296 | KUNIT_EXPECT_EQ(test, size, strlen(TEST_STRING_DATA) + 1); |
| 297 | KUNIT_EXPECT_FALSE(test, |
| 298 | ((uintptr_t)puf->e->start <= (uintptr_t)string) |
| 299 | && ((uintptr_t)string <= (uintptr_t)puf->e->end)); |
| 300 | KUNIT_EXPECT_STREQ(test, string, TEST_STRING_DATA); |
| 301 | } |
| 302 | |
| 303 | static void policy_unpack_test_unpack_strdup_out_of_bounds(struct kunit *test) |
| 304 | { |
| 305 | struct policy_unpack_fixture *puf = test->priv; |
| 306 | void *start = puf->e->pos; |
| 307 | char *string = NULL; |
| 308 | int size; |
| 309 | |
| 310 | puf->e->end = puf->e->pos + TEST_STRING_BUF_OFFSET |
| 311 | + strlen(TEST_STRING_DATA) - 1; |
| 312 | |
| 313 | size = unpack_strdup(puf->e, &string, TEST_STRING_NAME); |
| 314 | |
| 315 | KUNIT_EXPECT_EQ(test, size, 0); |
| 316 | KUNIT_EXPECT_PTR_EQ(test, string, (char *)NULL); |
| 317 | KUNIT_EXPECT_PTR_EQ(test, puf->e->pos, start); |
| 318 | } |
| 319 | |
| 320 | static void policy_unpack_test_unpack_nameX_with_null_name(struct kunit *test) |
| 321 | { |
| 322 | struct policy_unpack_fixture *puf = test->priv; |
| 323 | bool success; |
| 324 | |
| 325 | puf->e->pos += TEST_U32_BUF_OFFSET; |
| 326 | |
| 327 | success = unpack_nameX(puf->e, AA_U32, NULL); |
| 328 | |
| 329 | KUNIT_EXPECT_TRUE(test, success); |
| 330 | KUNIT_EXPECT_PTR_EQ(test, puf->e->pos, |
| 331 | puf->e->start + TEST_U32_BUF_OFFSET + 1); |
| 332 | } |
| 333 | |
| 334 | static void policy_unpack_test_unpack_nameX_with_wrong_code(struct kunit *test) |
| 335 | { |
| 336 | struct policy_unpack_fixture *puf = test->priv; |
| 337 | bool success; |
| 338 | |
| 339 | puf->e->pos += TEST_U32_BUF_OFFSET; |
| 340 | |
| 341 | success = unpack_nameX(puf->e, AA_BLOB, NULL); |
| 342 | |
| 343 | KUNIT_EXPECT_FALSE(test, success); |
| 344 | KUNIT_EXPECT_PTR_EQ(test, puf->e->pos, |
| 345 | puf->e->start + TEST_U32_BUF_OFFSET); |
| 346 | } |
| 347 | |
| 348 | static void policy_unpack_test_unpack_nameX_with_name(struct kunit *test) |
| 349 | { |
| 350 | struct policy_unpack_fixture *puf = test->priv; |
| 351 | const char name[] = TEST_U32_NAME; |
| 352 | bool success; |
| 353 | |
| 354 | puf->e->pos += TEST_NAMED_U32_BUF_OFFSET; |
| 355 | |
| 356 | success = unpack_nameX(puf->e, AA_U32, name); |
| 357 | |
| 358 | KUNIT_EXPECT_TRUE(test, success); |
| 359 | KUNIT_EXPECT_PTR_EQ(test, puf->e->pos, |
| 360 | puf->e->start + TEST_U32_BUF_OFFSET + 1); |
| 361 | } |
| 362 | |
| 363 | static void policy_unpack_test_unpack_nameX_with_wrong_name(struct kunit *test) |
| 364 | { |
| 365 | struct policy_unpack_fixture *puf = test->priv; |
| 366 | static const char name[] = "12345678"; |
| 367 | bool success; |
| 368 | |
| 369 | puf->e->pos += TEST_NAMED_U32_BUF_OFFSET; |
| 370 | |
| 371 | success = unpack_nameX(puf->e, AA_U32, name); |
| 372 | |
| 373 | KUNIT_EXPECT_FALSE(test, success); |
| 374 | KUNIT_EXPECT_PTR_EQ(test, puf->e->pos, |
| 375 | puf->e->start + TEST_NAMED_U32_BUF_OFFSET); |
| 376 | } |
| 377 | |
| 378 | static void policy_unpack_test_unpack_u16_chunk_basic(struct kunit *test) |
| 379 | { |
| 380 | struct policy_unpack_fixture *puf = test->priv; |
| 381 | char *chunk = NULL; |
| 382 | size_t size; |
| 383 | |
| 384 | puf->e->pos += TEST_U16_OFFSET; |
| 385 | /* |
| 386 | * WARNING: For unit testing purposes, we're pushing puf->e->end past |
| 387 | * the end of the allocated memory. Doing anything other than comparing |
| 388 | * memory addresses is dangerous. |
| 389 | */ |
| 390 | puf->e->end += TEST_U16_DATA; |
| 391 | |
| 392 | size = unpack_u16_chunk(puf->e, &chunk); |
| 393 | |
| 394 | KUNIT_EXPECT_PTR_EQ(test, (void *)chunk, |
| 395 | puf->e->start + TEST_U16_OFFSET + 2); |
| 396 | KUNIT_EXPECT_EQ(test, size, (size_t)TEST_U16_DATA); |
| 397 | KUNIT_EXPECT_PTR_EQ(test, puf->e->pos, (void *)(chunk + TEST_U16_DATA)); |
| 398 | } |
| 399 | |
| 400 | static void policy_unpack_test_unpack_u16_chunk_out_of_bounds_1( |
| 401 | struct kunit *test) |
| 402 | { |
| 403 | struct policy_unpack_fixture *puf = test->priv; |
| 404 | char *chunk = NULL; |
| 405 | size_t size; |
| 406 | |
| 407 | puf->e->pos = puf->e->end - 1; |
| 408 | |
| 409 | size = unpack_u16_chunk(puf->e, &chunk); |
| 410 | |
| 411 | KUNIT_EXPECT_EQ(test, size, (size_t)0); |
| 412 | KUNIT_EXPECT_PTR_EQ(test, chunk, (char *)NULL); |
| 413 | KUNIT_EXPECT_PTR_EQ(test, puf->e->pos, puf->e->end - 1); |
| 414 | } |
| 415 | |
| 416 | static void policy_unpack_test_unpack_u16_chunk_out_of_bounds_2( |
| 417 | struct kunit *test) |
| 418 | { |
| 419 | struct policy_unpack_fixture *puf = test->priv; |
| 420 | char *chunk = NULL; |
| 421 | size_t size; |
| 422 | |
| 423 | puf->e->pos += TEST_U16_OFFSET; |
| 424 | /* |
| 425 | * WARNING: For unit testing purposes, we're pushing puf->e->end past |
| 426 | * the end of the allocated memory. Doing anything other than comparing |
| 427 | * memory addresses is dangerous. |
| 428 | */ |
| 429 | puf->e->end = puf->e->pos + TEST_U16_DATA - 1; |
| 430 | |
| 431 | size = unpack_u16_chunk(puf->e, &chunk); |
| 432 | |
| 433 | KUNIT_EXPECT_EQ(test, size, (size_t)0); |
| 434 | KUNIT_EXPECT_PTR_EQ(test, chunk, (char *)NULL); |
| 435 | KUNIT_EXPECT_PTR_EQ(test, puf->e->pos, puf->e->start + TEST_U16_OFFSET); |
| 436 | } |
| 437 | |
| 438 | static void policy_unpack_test_unpack_u32_with_null_name(struct kunit *test) |
| 439 | { |
| 440 | struct policy_unpack_fixture *puf = test->priv; |
| 441 | bool success; |
| 442 | u32 data; |
| 443 | |
| 444 | puf->e->pos += TEST_U32_BUF_OFFSET; |
| 445 | |
| 446 | success = unpack_u32(puf->e, &data, NULL); |
| 447 | |
| 448 | KUNIT_EXPECT_TRUE(test, success); |
| 449 | KUNIT_EXPECT_EQ(test, data, TEST_U32_DATA); |
| 450 | KUNIT_EXPECT_PTR_EQ(test, puf->e->pos, |
| 451 | puf->e->start + TEST_U32_BUF_OFFSET + sizeof(u32) + 1); |
| 452 | } |
| 453 | |
| 454 | static void policy_unpack_test_unpack_u32_with_name(struct kunit *test) |
| 455 | { |
| 456 | struct policy_unpack_fixture *puf = test->priv; |
| 457 | const char name[] = TEST_U32_NAME; |
| 458 | bool success; |
| 459 | u32 data; |
| 460 | |
| 461 | puf->e->pos += TEST_NAMED_U32_BUF_OFFSET; |
| 462 | |
| 463 | success = unpack_u32(puf->e, &data, name); |
| 464 | |
| 465 | KUNIT_EXPECT_TRUE(test, success); |
| 466 | KUNIT_EXPECT_EQ(test, data, TEST_U32_DATA); |
| 467 | KUNIT_EXPECT_PTR_EQ(test, puf->e->pos, |
| 468 | puf->e->start + TEST_U32_BUF_OFFSET + sizeof(u32) + 1); |
| 469 | } |
| 470 | |
| 471 | static void policy_unpack_test_unpack_u32_out_of_bounds(struct kunit *test) |
| 472 | { |
| 473 | struct policy_unpack_fixture *puf = test->priv; |
| 474 | const char name[] = TEST_U32_NAME; |
| 475 | bool success; |
| 476 | u32 data; |
| 477 | |
| 478 | puf->e->pos += TEST_NAMED_U32_BUF_OFFSET; |
| 479 | puf->e->end = puf->e->start + TEST_U32_BUF_OFFSET + sizeof(u32); |
| 480 | |
| 481 | success = unpack_u32(puf->e, &data, name); |
| 482 | |
| 483 | KUNIT_EXPECT_FALSE(test, success); |
| 484 | KUNIT_EXPECT_PTR_EQ(test, puf->e->pos, |
| 485 | puf->e->start + TEST_NAMED_U32_BUF_OFFSET); |
| 486 | } |
| 487 | |
| 488 | static void policy_unpack_test_unpack_u64_with_null_name(struct kunit *test) |
| 489 | { |
| 490 | struct policy_unpack_fixture *puf = test->priv; |
| 491 | bool success; |
| 492 | u64 data; |
| 493 | |
| 494 | puf->e->pos += TEST_U64_BUF_OFFSET; |
| 495 | |
| 496 | success = unpack_u64(puf->e, &data, NULL); |
| 497 | |
| 498 | KUNIT_EXPECT_TRUE(test, success); |
| 499 | KUNIT_EXPECT_EQ(test, data, TEST_U64_DATA); |
| 500 | KUNIT_EXPECT_PTR_EQ(test, puf->e->pos, |
| 501 | puf->e->start + TEST_U64_BUF_OFFSET + sizeof(u64) + 1); |
| 502 | } |
| 503 | |
| 504 | static void policy_unpack_test_unpack_u64_with_name(struct kunit *test) |
| 505 | { |
| 506 | struct policy_unpack_fixture *puf = test->priv; |
| 507 | const char name[] = TEST_U64_NAME; |
| 508 | bool success; |
| 509 | u64 data; |
| 510 | |
| 511 | puf->e->pos += TEST_NAMED_U64_BUF_OFFSET; |
| 512 | |
| 513 | success = unpack_u64(puf->e, &data, name); |
| 514 | |
| 515 | KUNIT_EXPECT_TRUE(test, success); |
| 516 | KUNIT_EXPECT_EQ(test, data, TEST_U64_DATA); |
| 517 | KUNIT_EXPECT_PTR_EQ(test, puf->e->pos, |
| 518 | puf->e->start + TEST_U64_BUF_OFFSET + sizeof(u64) + 1); |
| 519 | } |
| 520 | |
| 521 | static void policy_unpack_test_unpack_u64_out_of_bounds(struct kunit *test) |
| 522 | { |
| 523 | struct policy_unpack_fixture *puf = test->priv; |
| 524 | const char name[] = TEST_U64_NAME; |
| 525 | bool success; |
| 526 | u64 data; |
| 527 | |
| 528 | puf->e->pos += TEST_NAMED_U64_BUF_OFFSET; |
| 529 | puf->e->end = puf->e->start + TEST_U64_BUF_OFFSET + sizeof(u64); |
| 530 | |
| 531 | success = unpack_u64(puf->e, &data, name); |
| 532 | |
| 533 | KUNIT_EXPECT_FALSE(test, success); |
| 534 | KUNIT_EXPECT_PTR_EQ(test, puf->e->pos, |
| 535 | puf->e->start + TEST_NAMED_U64_BUF_OFFSET); |
| 536 | } |
| 537 | |
| 538 | static void policy_unpack_test_unpack_X_code_match(struct kunit *test) |
| 539 | { |
| 540 | struct policy_unpack_fixture *puf = test->priv; |
| 541 | bool success = unpack_X(puf->e, AA_NAME); |
| 542 | |
| 543 | KUNIT_EXPECT_TRUE(test, success); |
| 544 | KUNIT_EXPECT_TRUE(test, puf->e->pos == puf->e->start + 1); |
| 545 | } |
| 546 | |
| 547 | static void policy_unpack_test_unpack_X_code_mismatch(struct kunit *test) |
| 548 | { |
| 549 | struct policy_unpack_fixture *puf = test->priv; |
| 550 | bool success = unpack_X(puf->e, AA_STRING); |
| 551 | |
| 552 | KUNIT_EXPECT_FALSE(test, success); |
| 553 | KUNIT_EXPECT_TRUE(test, puf->e->pos == puf->e->start); |
| 554 | } |
| 555 | |
| 556 | static void policy_unpack_test_unpack_X_out_of_bounds(struct kunit *test) |
| 557 | { |
| 558 | struct policy_unpack_fixture *puf = test->priv; |
| 559 | bool success; |
| 560 | |
| 561 | puf->e->pos = puf->e->end; |
| 562 | success = unpack_X(puf->e, AA_NAME); |
| 563 | |
| 564 | KUNIT_EXPECT_FALSE(test, success); |
| 565 | } |
| 566 | |
| 567 | static struct kunit_case apparmor_policy_unpack_test_cases[] = { |
| 568 | KUNIT_CASE(policy_unpack_test_inbounds_when_inbounds), |
| 569 | KUNIT_CASE(policy_unpack_test_inbounds_when_out_of_bounds), |
| 570 | KUNIT_CASE(policy_unpack_test_unpack_array_with_null_name), |
| 571 | KUNIT_CASE(policy_unpack_test_unpack_array_with_name), |
| 572 | KUNIT_CASE(policy_unpack_test_unpack_array_out_of_bounds), |
| 573 | KUNIT_CASE(policy_unpack_test_unpack_blob_with_null_name), |
| 574 | KUNIT_CASE(policy_unpack_test_unpack_blob_with_name), |
| 575 | KUNIT_CASE(policy_unpack_test_unpack_blob_out_of_bounds), |
| 576 | KUNIT_CASE(policy_unpack_test_unpack_nameX_with_null_name), |
| 577 | KUNIT_CASE(policy_unpack_test_unpack_nameX_with_wrong_code), |
| 578 | KUNIT_CASE(policy_unpack_test_unpack_nameX_with_name), |
| 579 | KUNIT_CASE(policy_unpack_test_unpack_nameX_with_wrong_name), |
| 580 | KUNIT_CASE(policy_unpack_test_unpack_str_with_null_name), |
| 581 | KUNIT_CASE(policy_unpack_test_unpack_str_with_name), |
| 582 | KUNIT_CASE(policy_unpack_test_unpack_str_out_of_bounds), |
| 583 | KUNIT_CASE(policy_unpack_test_unpack_strdup_with_null_name), |
| 584 | KUNIT_CASE(policy_unpack_test_unpack_strdup_with_name), |
| 585 | KUNIT_CASE(policy_unpack_test_unpack_strdup_out_of_bounds), |
| 586 | KUNIT_CASE(policy_unpack_test_unpack_u16_chunk_basic), |
| 587 | KUNIT_CASE(policy_unpack_test_unpack_u16_chunk_out_of_bounds_1), |
| 588 | KUNIT_CASE(policy_unpack_test_unpack_u16_chunk_out_of_bounds_2), |
| 589 | KUNIT_CASE(policy_unpack_test_unpack_u32_with_null_name), |
| 590 | KUNIT_CASE(policy_unpack_test_unpack_u32_with_name), |
| 591 | KUNIT_CASE(policy_unpack_test_unpack_u32_out_of_bounds), |
| 592 | KUNIT_CASE(policy_unpack_test_unpack_u64_with_null_name), |
| 593 | KUNIT_CASE(policy_unpack_test_unpack_u64_with_name), |
| 594 | KUNIT_CASE(policy_unpack_test_unpack_u64_out_of_bounds), |
| 595 | KUNIT_CASE(policy_unpack_test_unpack_X_code_match), |
| 596 | KUNIT_CASE(policy_unpack_test_unpack_X_code_mismatch), |
| 597 | KUNIT_CASE(policy_unpack_test_unpack_X_out_of_bounds), |
| 598 | {}, |
| 599 | }; |
| 600 | |
| 601 | static struct kunit_suite apparmor_policy_unpack_test_module = { |
| 602 | .name = "apparmor_policy_unpack", |
| 603 | .init = policy_unpack_test_init, |
| 604 | .test_cases = apparmor_policy_unpack_test_cases, |
| 605 | }; |
| 606 | |
| 607 | kunit_test_suite(apparmor_policy_unpack_test_module); |