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a6811666 SZ |
1 | /** @file\r |
2 | Implement authentication services for the authenticated variables.\r | |
3 | \r | |
4 | Caution: This module requires additional review when modified.\r | |
5 | This driver will have external input - variable data. It may be input in SMM mode.\r | |
6 | This external input must be validated carefully to avoid security issue like\r | |
7 | buffer overflow, integer overflow.\r | |
8 | Variable attribute should also be checked to avoid authentication bypass.\r | |
9 | The whole SMM authentication variable design relies on the integrity of flash part and SMM.\r | |
10 | which is assumed to be protected by platform. All variable code and metadata in flash/SMM Memory\r | |
11 | may not be modified without authorization. If platform fails to protect these resources,\r | |
12 | the authentication service provided in this driver will be broken, and the behavior is undefined.\r | |
13 | \r | |
98c2d961 | 14 | Copyright (c) 2015 - 2016, Intel Corporation. All rights reserved.<BR>\r |
a6811666 SZ |
15 | This program and the accompanying materials\r |
16 | are licensed and made available under the terms and conditions of the BSD License\r | |
17 | which accompanies this distribution. The full text of the license may be found at\r | |
18 | http://opensource.org/licenses/bsd-license.php\r | |
19 | \r | |
20 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
21 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
22 | \r | |
23 | **/\r | |
24 | \r | |
25 | #include "AuthServiceInternal.h"\r | |
26 | \r | |
27 | ///\r | |
28 | /// Global database array for scratch\r | |
29 | ///\r | |
30 | UINT8 *mPubKeyStore;\r | |
31 | UINT32 mPubKeyNumber;\r | |
32 | UINT32 mMaxKeyNumber;\r | |
33 | UINT32 mMaxKeyDbSize;\r | |
34 | UINT8 *mCertDbStore;\r | |
35 | UINT32 mMaxCertDbSize;\r | |
560ac77e | 36 | UINT32 mPlatformMode;\r |
a6811666 | 37 | UINT8 mVendorKeyState;\r |
90fa5321 | 38 | BOOLEAN mUserPhysicalPresent;\r |
a6811666 SZ |
39 | \r |
40 | EFI_GUID mSignatureSupport[] = {EFI_CERT_SHA1_GUID, EFI_CERT_SHA256_GUID, EFI_CERT_RSA2048_GUID, EFI_CERT_X509_GUID};\r | |
41 | \r | |
42 | //\r | |
43 | // Hash context pointer\r | |
44 | //\r | |
45 | VOID *mHashCtx = NULL;\r | |
46 | \r | |
47 | VARIABLE_ENTRY_PROPERTY mAuthVarEntry[] = {\r | |
48 | {\r | |
49 | &gEfiSecureBootEnableDisableGuid,\r | |
50 | EFI_SECURE_BOOT_ENABLE_NAME,\r | |
51 | {\r | |
52 | VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r | |
53 | 0,\r | |
54 | VARIABLE_ATTRIBUTE_NV_BS,\r | |
55 | sizeof (UINT8),\r | |
56 | sizeof (UINT8)\r | |
57 | }\r | |
58 | },\r | |
59 | {\r | |
60 | &gEfiCustomModeEnableGuid,\r | |
61 | EFI_CUSTOM_MODE_NAME,\r | |
62 | {\r | |
63 | VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r | |
64 | 0,\r | |
65 | VARIABLE_ATTRIBUTE_NV_BS,\r | |
66 | sizeof (UINT8),\r | |
67 | sizeof (UINT8)\r | |
68 | }\r | |
69 | },\r | |
70 | {\r | |
71 | &gEfiVendorKeysNvGuid,\r | |
72 | EFI_VENDOR_KEYS_NV_VARIABLE_NAME,\r | |
73 | {\r | |
74 | VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r | |
75 | VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY,\r | |
76 | VARIABLE_ATTRIBUTE_NV_BS_RT_AT,\r | |
77 | sizeof (UINT8),\r | |
78 | sizeof (UINT8)\r | |
79 | }\r | |
80 | },\r | |
81 | {\r | |
82 | &gEfiAuthenticatedVariableGuid,\r | |
83 | AUTHVAR_KEYDB_NAME,\r | |
84 | {\r | |
85 | VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r | |
86 | VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY,\r | |
87 | VARIABLE_ATTRIBUTE_NV_BS_RT_AW,\r | |
88 | sizeof (UINT8),\r | |
89 | MAX_UINTN\r | |
90 | }\r | |
91 | },\r | |
92 | {\r | |
93 | &gEfiCertDbGuid,\r | |
94 | EFI_CERT_DB_NAME,\r | |
95 | {\r | |
96 | VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r | |
97 | VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY,\r | |
98 | VARIABLE_ATTRIBUTE_NV_BS_RT_AT,\r | |
99 | sizeof (UINT32),\r | |
100 | MAX_UINTN\r | |
101 | }\r | |
102 | },\r | |
98c2d961 CZ |
103 | {\r |
104 | &gEfiCertDbGuid,\r | |
105 | EFI_CERT_DB_VOLATILE_NAME,\r | |
106 | {\r | |
107 | VAR_CHECK_VARIABLE_PROPERTY_REVISION,\r | |
108 | VAR_CHECK_VARIABLE_PROPERTY_READ_ONLY,\r | |
109 | VARIABLE_ATTRIBUTE_BS_RT_AT,\r | |
110 | sizeof (UINT32),\r | |
111 | MAX_UINTN\r | |
112 | }\r | |
113 | },\r | |
a6811666 SZ |
114 | };\r |
115 | \r | |
f18b2162 | 116 | VOID **mAuthVarAddressPointer[10];\r |
a6811666 SZ |
117 | \r |
118 | AUTH_VAR_LIB_CONTEXT_IN *mAuthVarLibContextIn = NULL;\r | |
119 | \r | |
120 | /**\r | |
121 | Initialization for authenticated varibale services.\r | |
122 | If this initialization returns error status, other APIs will not work\r | |
123 | and expect to be not called then.\r | |
124 | \r | |
125 | @param[in] AuthVarLibContextIn Pointer to input auth variable lib context.\r | |
126 | @param[out] AuthVarLibContextOut Pointer to output auth variable lib context.\r | |
127 | \r | |
128 | @retval EFI_SUCCESS Function successfully executed.\r | |
129 | @retval EFI_INVALID_PARAMETER If AuthVarLibContextIn == NULL or AuthVarLibContextOut == NULL.\r | |
130 | @retval EFI_OUT_OF_RESOURCES Fail to allocate enough resource.\r | |
131 | @retval EFI_UNSUPPORTED Unsupported to process authenticated variable.\r | |
132 | \r | |
133 | **/\r | |
134 | EFI_STATUS\r | |
135 | EFIAPI\r | |
136 | AuthVariableLibInitialize (\r | |
137 | IN AUTH_VAR_LIB_CONTEXT_IN *AuthVarLibContextIn,\r | |
138 | OUT AUTH_VAR_LIB_CONTEXT_OUT *AuthVarLibContextOut\r | |
139 | )\r | |
140 | {\r | |
141 | EFI_STATUS Status;\r | |
142 | UINT8 VarValue;\r | |
143 | UINT32 VarAttr;\r | |
144 | UINT8 *Data;\r | |
145 | UINTN DataSize;\r | |
146 | UINTN CtxSize;\r | |
560ac77e ZC |
147 | UINT8 SecureBootMode;\r |
148 | UINT8 SecureBootEnable;\r | |
a6811666 SZ |
149 | UINT8 CustomMode;\r |
150 | UINT32 ListSize;\r | |
151 | \r | |
152 | if ((AuthVarLibContextIn == NULL) || (AuthVarLibContextOut == NULL)) {\r | |
153 | return EFI_INVALID_PARAMETER;\r | |
154 | }\r | |
155 | \r | |
156 | mAuthVarLibContextIn = AuthVarLibContextIn;\r | |
157 | \r | |
158 | //\r | |
159 | // Initialize hash context.\r | |
160 | //\r | |
161 | CtxSize = Sha256GetContextSize ();\r | |
162 | mHashCtx = AllocateRuntimePool (CtxSize);\r | |
163 | if (mHashCtx == NULL) {\r | |
164 | return EFI_OUT_OF_RESOURCES;\r | |
165 | }\r | |
166 | \r | |
167 | //\r | |
168 | // Reserve runtime buffer for public key database. The size excludes variable header and name size.\r | |
169 | //\r | |
170 | mMaxKeyDbSize = (UINT32) (mAuthVarLibContextIn->MaxAuthVariableSize - sizeof (AUTHVAR_KEYDB_NAME));\r | |
171 | mMaxKeyNumber = mMaxKeyDbSize / sizeof (AUTHVAR_KEY_DB_DATA);\r | |
172 | mPubKeyStore = AllocateRuntimePool (mMaxKeyDbSize);\r | |
173 | if (mPubKeyStore == NULL) {\r | |
174 | return EFI_OUT_OF_RESOURCES;\r | |
175 | }\r | |
176 | \r | |
177 | //\r | |
178 | // Reserve runtime buffer for certificate database. The size excludes variable header and name size.\r | |
98c2d961 | 179 | // Use EFI_CERT_DB_VOLATILE_NAME size since it is longer.\r |
a6811666 | 180 | //\r |
98c2d961 | 181 | mMaxCertDbSize = (UINT32) (mAuthVarLibContextIn->MaxAuthVariableSize - sizeof (EFI_CERT_DB_VOLATILE_NAME));\r |
a6811666 SZ |
182 | mCertDbStore = AllocateRuntimePool (mMaxCertDbSize);\r |
183 | if (mCertDbStore == NULL) {\r | |
184 | return EFI_OUT_OF_RESOURCES;\r | |
185 | }\r | |
186 | \r | |
187 | //\r | |
188 | // Check "AuthVarKeyDatabase" variable's existence.\r | |
189 | // If it doesn't exist, create a new one with initial value of 0 and EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS set.\r | |
190 | //\r | |
191 | Status = AuthServiceInternalFindVariable (\r | |
192 | AUTHVAR_KEYDB_NAME,\r | |
193 | &gEfiAuthenticatedVariableGuid,\r | |
194 | (VOID **) &Data,\r | |
195 | &DataSize\r | |
196 | );\r | |
197 | if (EFI_ERROR (Status)) {\r | |
198 | VarAttr = EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS;\r | |
199 | VarValue = 0;\r | |
200 | mPubKeyNumber = 0;\r | |
201 | Status = AuthServiceInternalUpdateVariable (\r | |
202 | AUTHVAR_KEYDB_NAME,\r | |
203 | &gEfiAuthenticatedVariableGuid,\r | |
204 | &VarValue,\r | |
205 | sizeof(UINT8),\r | |
206 | VarAttr\r | |
207 | );\r | |
208 | if (EFI_ERROR (Status)) {\r | |
209 | return Status;\r | |
210 | }\r | |
211 | } else {\r | |
212 | //\r | |
213 | // Load database in global variable for cache.\r | |
214 | //\r | |
215 | ASSERT ((DataSize != 0) && (Data != NULL));\r | |
216 | //\r | |
217 | // "AuthVarKeyDatabase" is an internal variable. Its DataSize is always ensured not to exceed mPubKeyStore buffer size(See definition before)\r | |
218 | // Therefore, there is no memory overflow in underlying CopyMem.\r | |
219 | //\r | |
220 | CopyMem (mPubKeyStore, (UINT8 *) Data, DataSize);\r | |
221 | mPubKeyNumber = (UINT32) (DataSize / sizeof (AUTHVAR_KEY_DB_DATA));\r | |
222 | }\r | |
223 | \r | |
560ac77e ZC |
224 | Status = AuthServiceInternalFindVariable (EFI_PLATFORM_KEY_NAME, &gEfiGlobalVariableGuid, (VOID **) &Data, &DataSize);\r |
225 | if (EFI_ERROR (Status)) {\r | |
226 | DEBUG ((EFI_D_INFO, "Variable %s does not exist.\n", EFI_PLATFORM_KEY_NAME));\r | |
227 | } else {\r | |
228 | DEBUG ((EFI_D_INFO, "Variable %s exists.\n", EFI_PLATFORM_KEY_NAME));\r | |
229 | }\r | |
230 | \r | |
a6811666 | 231 | //\r |
560ac77e | 232 | // Create "SetupMode" variable with BS+RT attribute set.\r |
a6811666 | 233 | //\r |
560ac77e ZC |
234 | if (EFI_ERROR (Status)) {\r |
235 | mPlatformMode = SETUP_MODE;\r | |
236 | } else {\r | |
237 | mPlatformMode = USER_MODE;\r | |
238 | }\r | |
239 | Status = AuthServiceInternalUpdateVariable (\r | |
240 | EFI_SETUP_MODE_NAME,\r | |
241 | &gEfiGlobalVariableGuid,\r | |
242 | &mPlatformMode,\r | |
243 | sizeof(UINT8),\r | |
244 | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS\r | |
245 | );\r | |
246 | if (EFI_ERROR (Status)) {\r | |
247 | return Status;\r | |
248 | }\r | |
a6811666 SZ |
249 | \r |
250 | //\r | |
251 | // Create "SignatureSupport" variable with BS+RT attribute set.\r | |
252 | //\r | |
253 | Status = AuthServiceInternalUpdateVariable (\r | |
254 | EFI_SIGNATURE_SUPPORT_NAME,\r | |
255 | &gEfiGlobalVariableGuid,\r | |
256 | mSignatureSupport,\r | |
257 | sizeof(mSignatureSupport),\r | |
258 | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS\r | |
259 | );\r | |
260 | if (EFI_ERROR (Status)) {\r | |
261 | return Status;\r | |
262 | }\r | |
263 | \r | |
560ac77e ZC |
264 | //\r |
265 | // If "SecureBootEnable" variable exists, then update "SecureBoot" variable.\r | |
266 | // If "SecureBootEnable" variable is SECURE_BOOT_ENABLE and in USER_MODE, Set "SecureBoot" variable to SECURE_BOOT_MODE_ENABLE.\r | |
267 | // If "SecureBootEnable" variable is SECURE_BOOT_DISABLE, Set "SecureBoot" variable to SECURE_BOOT_MODE_DISABLE.\r | |
268 | //\r | |
269 | SecureBootEnable = SECURE_BOOT_DISABLE;\r | |
270 | Status = AuthServiceInternalFindVariable (EFI_SECURE_BOOT_ENABLE_NAME, &gEfiSecureBootEnableDisableGuid, (VOID **) &Data, &DataSize);\r | |
271 | if (!EFI_ERROR (Status)) {\r | |
272 | if (mPlatformMode == USER_MODE){\r | |
273 | SecureBootEnable = *(UINT8 *) Data;\r | |
274 | }\r | |
275 | } else if (mPlatformMode == USER_MODE) {\r | |
276 | //\r | |
277 | // "SecureBootEnable" not exist, initialize it in USER_MODE.\r | |
278 | //\r | |
279 | SecureBootEnable = SECURE_BOOT_ENABLE;\r | |
280 | Status = AuthServiceInternalUpdateVariable (\r | |
281 | EFI_SECURE_BOOT_ENABLE_NAME,\r | |
282 | &gEfiSecureBootEnableDisableGuid,\r | |
283 | &SecureBootEnable,\r | |
284 | sizeof (UINT8),\r | |
285 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS\r | |
286 | );\r | |
287 | if (EFI_ERROR (Status)) {\r | |
288 | return Status;\r | |
289 | }\r | |
290 | }\r | |
291 | \r | |
292 | //\r | |
293 | // Create "SecureBoot" variable with BS+RT attribute set.\r | |
294 | //\r | |
295 | if (SecureBootEnable == SECURE_BOOT_ENABLE && mPlatformMode == USER_MODE) {\r | |
296 | SecureBootMode = SECURE_BOOT_MODE_ENABLE;\r | |
297 | } else {\r | |
298 | SecureBootMode = SECURE_BOOT_MODE_DISABLE;\r | |
299 | }\r | |
300 | Status = AuthServiceInternalUpdateVariable (\r | |
301 | EFI_SECURE_BOOT_MODE_NAME,\r | |
302 | &gEfiGlobalVariableGuid,\r | |
303 | &SecureBootMode,\r | |
304 | sizeof (UINT8),\r | |
305 | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS\r | |
306 | );\r | |
307 | if (EFI_ERROR (Status)) {\r | |
308 | return Status;\r | |
309 | }\r | |
310 | \r | |
311 | DEBUG ((EFI_D_INFO, "Variable %s is %x\n", EFI_SETUP_MODE_NAME, mPlatformMode));\r | |
312 | DEBUG ((EFI_D_INFO, "Variable %s is %x\n", EFI_SECURE_BOOT_MODE_NAME, SecureBootMode));\r | |
313 | DEBUG ((EFI_D_INFO, "Variable %s is %x\n", EFI_SECURE_BOOT_ENABLE_NAME, SecureBootEnable));\r | |
314 | \r | |
a6811666 SZ |
315 | //\r |
316 | // Initialize "CustomMode" in STANDARD_SECURE_BOOT_MODE state.\r | |
317 | //\r | |
318 | CustomMode = STANDARD_SECURE_BOOT_MODE;\r | |
319 | Status = AuthServiceInternalUpdateVariable (\r | |
320 | EFI_CUSTOM_MODE_NAME,\r | |
321 | &gEfiCustomModeEnableGuid,\r | |
322 | &CustomMode,\r | |
323 | sizeof (UINT8),\r | |
324 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS\r | |
325 | );\r | |
326 | if (EFI_ERROR (Status)) {\r | |
327 | return Status;\r | |
328 | }\r | |
329 | \r | |
330 | DEBUG ((EFI_D_INFO, "Variable %s is %x\n", EFI_CUSTOM_MODE_NAME, CustomMode));\r | |
331 | \r | |
332 | //\r | |
333 | // Check "certdb" variable's existence.\r | |
334 | // If it doesn't exist, then create a new one with\r | |
335 | // EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS set.\r | |
336 | //\r | |
337 | Status = AuthServiceInternalFindVariable (\r | |
338 | EFI_CERT_DB_NAME,\r | |
339 | &gEfiCertDbGuid,\r | |
340 | (VOID **) &Data,\r | |
341 | &DataSize\r | |
342 | );\r | |
343 | if (EFI_ERROR (Status)) {\r | |
344 | VarAttr = EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS;\r | |
345 | ListSize = sizeof (UINT32);\r | |
346 | Status = AuthServiceInternalUpdateVariable (\r | |
347 | EFI_CERT_DB_NAME,\r | |
348 | &gEfiCertDbGuid,\r | |
349 | &ListSize,\r | |
350 | sizeof (UINT32),\r | |
351 | VarAttr\r | |
352 | );\r | |
353 | if (EFI_ERROR (Status)) {\r | |
354 | return Status;\r | |
355 | }\r | |
64b6a3ff CZ |
356 | } else {\r |
357 | //\r | |
358 | // Clean up Certs to make certDB & Time based auth variable consistent\r | |
359 | //\r | |
360 | Status = CleanCertsFromDb();\r | |
361 | if (EFI_ERROR (Status)) {\r | |
f3964772 | 362 | DEBUG ((EFI_D_ERROR, "Clean up CertDB fail! Status %x\n", Status));\r |
64b6a3ff CZ |
363 | return Status;\r |
364 | }\r | |
a6811666 SZ |
365 | }\r |
366 | \r | |
98c2d961 CZ |
367 | //\r |
368 | // Create "certdbv" variable with RT+BS+AT set.\r | |
369 | //\r | |
370 | VarAttr = EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS;\r | |
371 | ListSize = sizeof (UINT32);\r | |
372 | Status = AuthServiceInternalUpdateVariable (\r | |
373 | EFI_CERT_DB_VOLATILE_NAME,\r | |
374 | &gEfiCertDbGuid,\r | |
375 | &ListSize,\r | |
376 | sizeof (UINT32),\r | |
377 | VarAttr\r | |
378 | );\r | |
379 | if (EFI_ERROR (Status)) {\r | |
380 | return Status;\r | |
381 | }\r | |
382 | \r | |
a6811666 SZ |
383 | //\r |
384 | // Check "VendorKeysNv" variable's existence and create "VendorKeys" variable accordingly.\r | |
385 | //\r | |
386 | Status = AuthServiceInternalFindVariable (EFI_VENDOR_KEYS_NV_VARIABLE_NAME, &gEfiVendorKeysNvGuid, (VOID **) &Data, &DataSize);\r | |
387 | if (!EFI_ERROR (Status)) {\r | |
388 | mVendorKeyState = *(UINT8 *)Data;\r | |
389 | } else {\r | |
390 | //\r | |
391 | // "VendorKeysNv" not exist, initialize it in VENDOR_KEYS_VALID state.\r | |
392 | //\r | |
393 | mVendorKeyState = VENDOR_KEYS_VALID;\r | |
394 | Status = AuthServiceInternalUpdateVariable (\r | |
395 | EFI_VENDOR_KEYS_NV_VARIABLE_NAME,\r | |
396 | &gEfiVendorKeysNvGuid,\r | |
397 | &mVendorKeyState,\r | |
398 | sizeof (UINT8),\r | |
399 | EFI_VARIABLE_NON_VOLATILE | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS\r | |
400 | );\r | |
401 | if (EFI_ERROR (Status)) {\r | |
402 | return Status;\r | |
403 | }\r | |
404 | }\r | |
405 | \r | |
406 | //\r | |
407 | // Create "VendorKeys" variable with BS+RT attribute set.\r | |
408 | //\r | |
409 | Status = AuthServiceInternalUpdateVariable (\r | |
410 | EFI_VENDOR_KEYS_VARIABLE_NAME,\r | |
411 | &gEfiGlobalVariableGuid,\r | |
412 | &mVendorKeyState,\r | |
413 | sizeof (UINT8),\r | |
414 | EFI_VARIABLE_RUNTIME_ACCESS | EFI_VARIABLE_BOOTSERVICE_ACCESS\r | |
415 | );\r | |
416 | if (EFI_ERROR (Status)) {\r | |
417 | return Status;\r | |
418 | }\r | |
419 | \r | |
420 | DEBUG ((EFI_D_INFO, "Variable %s is %x\n", EFI_VENDOR_KEYS_VARIABLE_NAME, mVendorKeyState));\r | |
421 | \r | |
422 | AuthVarLibContextOut->StructVersion = AUTH_VAR_LIB_CONTEXT_OUT_STRUCT_VERSION;\r | |
423 | AuthVarLibContextOut->StructSize = sizeof (AUTH_VAR_LIB_CONTEXT_OUT);\r | |
424 | AuthVarLibContextOut->AuthVarEntry = mAuthVarEntry;\r | |
425 | AuthVarLibContextOut->AuthVarEntryCount = sizeof (mAuthVarEntry) / sizeof (mAuthVarEntry[0]);\r | |
f18b2162 SZ |
426 | mAuthVarAddressPointer[0] = (VOID **) &mPubKeyStore;\r |
427 | mAuthVarAddressPointer[1] = (VOID **) &mCertDbStore;\r | |
428 | mAuthVarAddressPointer[2] = (VOID **) &mHashCtx;\r | |
429 | mAuthVarAddressPointer[3] = (VOID **) &mAuthVarLibContextIn;\r | |
430 | mAuthVarAddressPointer[4] = (VOID **) &(mAuthVarLibContextIn->FindVariable),\r | |
431 | mAuthVarAddressPointer[5] = (VOID **) &(mAuthVarLibContextIn->FindNextVariable),\r | |
432 | mAuthVarAddressPointer[6] = (VOID **) &(mAuthVarLibContextIn->UpdateVariable),\r | |
433 | mAuthVarAddressPointer[7] = (VOID **) &(mAuthVarLibContextIn->GetScratchBuffer),\r | |
434 | mAuthVarAddressPointer[8] = (VOID **) &(mAuthVarLibContextIn->CheckRemainingSpaceForConsistency),\r | |
435 | mAuthVarAddressPointer[9] = (VOID **) &(mAuthVarLibContextIn->AtRuntime),\r | |
436 | AuthVarLibContextOut->AddressPointer = mAuthVarAddressPointer;\r | |
437 | AuthVarLibContextOut->AddressPointerCount = sizeof (mAuthVarAddressPointer) / sizeof (mAuthVarAddressPointer[0]);\r | |
a6811666 | 438 | \r |
90fa5321 ZC |
439 | //\r |
440 | // Cache UserPhysicalPresent State. \r | |
441 | // Platform should report PhysicalPresent before this point\r | |
442 | //\r | |
443 | mUserPhysicalPresent = UserPhysicalPresent();\r | |
444 | \r | |
a6811666 SZ |
445 | return Status;\r |
446 | }\r | |
447 | \r | |
448 | /**\r | |
449 | Process variable with EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS/EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS set.\r | |
450 | \r | |
451 | @param[in] VariableName Name of the variable.\r | |
452 | @param[in] VendorGuid Variable vendor GUID.\r | |
453 | @param[in] Data Data pointer.\r | |
454 | @param[in] DataSize Size of Data.\r | |
455 | @param[in] Attributes Attribute value of the variable.\r | |
456 | \r | |
457 | @retval EFI_SUCCESS The firmware has successfully stored the variable and its data as\r | |
458 | defined by the Attributes.\r | |
459 | @retval EFI_INVALID_PARAMETER Invalid parameter.\r | |
460 | @retval EFI_WRITE_PROTECTED Variable is write-protected.\r | |
461 | @retval EFI_OUT_OF_RESOURCES There is not enough resource.\r | |
462 | @retval EFI_SECURITY_VIOLATION The variable is with EFI_VARIABLE_AUTHENTICATED_WRITE_ACCESS\r | |
463 | or EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACESS\r | |
464 | set, but the AuthInfo does NOT pass the validation\r | |
465 | check carried out by the firmware.\r | |
466 | @retval EFI_UNSUPPORTED Unsupported to process authenticated variable.\r | |
467 | \r | |
468 | **/\r | |
469 | EFI_STATUS\r | |
470 | EFIAPI\r | |
471 | AuthVariableLibProcessVariable (\r | |
472 | IN CHAR16 *VariableName,\r | |
473 | IN EFI_GUID *VendorGuid,\r | |
474 | IN VOID *Data,\r | |
475 | IN UINTN DataSize,\r | |
476 | IN UINT32 Attributes\r | |
477 | )\r | |
478 | {\r | |
479 | EFI_STATUS Status;\r | |
480 | \r | |
481 | if (CompareGuid (VendorGuid, &gEfiGlobalVariableGuid) && (StrCmp (VariableName, EFI_PLATFORM_KEY_NAME) == 0)){\r | |
482 | Status = ProcessVarWithPk (VariableName, VendorGuid, Data, DataSize, Attributes, TRUE);\r | |
483 | } else if (CompareGuid (VendorGuid, &gEfiGlobalVariableGuid) && (StrCmp (VariableName, EFI_KEY_EXCHANGE_KEY_NAME) == 0)) {\r | |
484 | Status = ProcessVarWithPk (VariableName, VendorGuid, Data, DataSize, Attributes, FALSE);\r | |
485 | } else if (CompareGuid (VendorGuid, &gEfiImageSecurityDatabaseGuid) &&\r | |
486 | ((StrCmp (VariableName, EFI_IMAGE_SECURITY_DATABASE) == 0) ||\r | |
487 | (StrCmp (VariableName, EFI_IMAGE_SECURITY_DATABASE1) == 0) ||\r | |
488 | (StrCmp (VariableName, EFI_IMAGE_SECURITY_DATABASE2) == 0)\r | |
489 | )) {\r | |
490 | Status = ProcessVarWithPk (VariableName, VendorGuid, Data, DataSize, Attributes, FALSE);\r | |
491 | if (EFI_ERROR (Status)) {\r | |
492 | Status = ProcessVarWithKek (VariableName, VendorGuid, Data, DataSize, Attributes);\r | |
493 | }\r | |
494 | } else {\r | |
495 | Status = ProcessVariable (VariableName, VendorGuid, Data, DataSize, Attributes);\r | |
496 | }\r | |
497 | \r | |
498 | return Status;\r | |
499 | }\r |