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ecc722ad | 1 | /** @file\r |
2 | Internal file explorer functions for SecureBoot configuration module.\r | |
3 | \r | |
762d8ddb | 4 | Copyright (c) 2012 - 2016, Intel Corporation. All rights reserved.<BR>\r |
ecc722ad | 5 | This program and the accompanying materials\r |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | #include "SecureBootConfigImpl.h"\r | |
16 | \r | |
ecc722ad | 17 | VOID *mStartOpCodeHandle = NULL;\r |
18 | VOID *mEndOpCodeHandle = NULL;\r | |
19 | EFI_IFR_GUID_LABEL *mStartLabel = NULL;\r | |
20 | EFI_IFR_GUID_LABEL *mEndLabel = NULL;\r | |
21 | \r | |
22 | /**\r | |
762d8ddb | 23 | Refresh the global UpdateData structure.\r |
ecc722ad | 24 | \r |
25 | **/\r | |
762d8ddb DB |
26 | VOID\r |
27 | RefreshUpdateData (\r | |
28 | VOID\r | |
ecc722ad | 29 | )\r |
30 | {\r | |
ecc722ad | 31 | //\r |
762d8ddb | 32 | // Free current updated date\r |
ecc722ad | 33 | //\r |
762d8ddb DB |
34 | if (mStartOpCodeHandle != NULL) {\r |
35 | HiiFreeOpCodeHandle (mStartOpCodeHandle);\r | |
ecc722ad | 36 | }\r |
ecc722ad | 37 | \r |
ecc722ad | 38 | //\r |
762d8ddb | 39 | // Create new OpCode Handle\r |
ecc722ad | 40 | //\r |
762d8ddb | 41 | mStartOpCodeHandle = HiiAllocateOpCodeHandle ();\r |
ecc722ad | 42 | \r |
43 | //\r | |
762d8ddb | 44 | // Create Hii Extend Label OpCode as the start opcode\r |
ecc722ad | 45 | //\r |
762d8ddb DB |
46 | mStartLabel = (EFI_IFR_GUID_LABEL *) HiiCreateGuidOpCode (\r |
47 | mStartOpCodeHandle,\r | |
48 | &gEfiIfrTianoGuid,\r | |
49 | NULL,\r | |
50 | sizeof (EFI_IFR_GUID_LABEL)\r | |
ecc722ad | 51 | );\r |
762d8ddb | 52 | mStartLabel->ExtendOpCode = EFI_IFR_EXTEND_OP_LABEL;\r |
ecc722ad | 53 | }\r |
54 | \r | |
55 | /**\r | |
762d8ddb | 56 | Clean up the dynamic opcode at label and form specified by both LabelId.\r |
ecc722ad | 57 | \r |
762d8ddb DB |
58 | @param[in] LabelId It is both the Form ID and Label ID for opcode deletion.\r |
59 | @param[in] PrivateData Module private data.\r | |
20333c6d | 60 | \r |
ecc722ad | 61 | **/\r |
62 | VOID\r | |
762d8ddb DB |
63 | CleanUpPage (\r |
64 | IN UINT16 LabelId,\r | |
65 | IN SECUREBOOT_CONFIG_PRIVATE_DATA *PrivateData\r | |
ecc722ad | 66 | )\r |
67 | {\r | |
762d8ddb | 68 | RefreshUpdateData ();\r |
ecc722ad | 69 | \r |
70 | //\r | |
762d8ddb | 71 | // Remove all op-codes from dynamic page\r |
ecc722ad | 72 | //\r |
762d8ddb DB |
73 | mStartLabel->Number = LabelId;\r |
74 | HiiUpdateForm (\r | |
75 | PrivateData->HiiHandle,\r | |
76 | &gSecureBootConfigFormSetGuid,\r | |
77 | LabelId,\r | |
78 | mStartOpCodeHandle, // Label LabelId\r | |
79 | mEndOpCodeHandle // LABEL_END\r | |
80 | );\r | |
ecc722ad | 81 | }\r |
82 | \r | |
83 | /**\r | |
84 | This function will open a file or directory referenced by DevicePath.\r | |
85 | \r | |
86 | This function opens a file with the open mode according to the file path. The\r | |
87 | Attributes is valid only for EFI_FILE_MODE_CREATE.\r | |
88 | \r | |
20333c6d | 89 | @param[in, out] FilePath On input, the device path to the file.\r |
ecc722ad | 90 | On output, the remaining device path.\r |
91 | @param[out] FileHandle Pointer to the file handle.\r | |
92 | @param[in] OpenMode The mode to open the file with.\r | |
93 | @param[in] Attributes The file's file attributes.\r | |
94 | \r | |
95 | @retval EFI_SUCCESS The information was set.\r | |
96 | @retval EFI_INVALID_PARAMETER One of the parameters has an invalid value.\r | |
97 | @retval EFI_UNSUPPORTED Could not open the file path.\r | |
98 | @retval EFI_NOT_FOUND The specified file could not be found on the\r | |
99 | device or the file system could not be found on\r | |
100 | the device.\r | |
101 | @retval EFI_NO_MEDIA The device has no medium.\r | |
102 | @retval EFI_MEDIA_CHANGED The device has a different medium in it or the\r | |
103 | medium is no longer supported.\r | |
104 | @retval EFI_DEVICE_ERROR The device reported an error.\r | |
105 | @retval EFI_VOLUME_CORRUPTED The file system structures are corrupted.\r | |
106 | @retval EFI_WRITE_PROTECTED The file or medium is write protected.\r | |
107 | @retval EFI_ACCESS_DENIED The file was opened read only.\r | |
108 | @retval EFI_OUT_OF_RESOURCES Not enough resources were available to open the\r | |
109 | file.\r | |
110 | @retval EFI_VOLUME_FULL The volume is full.\r | |
111 | **/\r | |
112 | EFI_STATUS\r | |
113 | EFIAPI\r | |
114 | OpenFileByDevicePath(\r | |
115 | IN OUT EFI_DEVICE_PATH_PROTOCOL **FilePath,\r | |
116 | OUT EFI_FILE_HANDLE *FileHandle,\r | |
117 | IN UINT64 OpenMode,\r | |
118 | IN UINT64 Attributes\r | |
119 | )\r | |
120 | {\r | |
121 | EFI_STATUS Status;\r | |
122 | EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *EfiSimpleFileSystemProtocol;\r | |
123 | EFI_FILE_PROTOCOL *Handle1;\r | |
124 | EFI_FILE_PROTOCOL *Handle2;\r | |
20333c6d | 125 | EFI_HANDLE DeviceHandle;\r |
ecc722ad | 126 | \r |
127 | if ((FilePath == NULL || FileHandle == NULL)) {\r | |
128 | return EFI_INVALID_PARAMETER;\r | |
129 | }\r | |
130 | \r | |
131 | Status = gBS->LocateDevicePath (\r | |
132 | &gEfiSimpleFileSystemProtocolGuid,\r | |
133 | FilePath,\r | |
134 | &DeviceHandle\r | |
135 | );\r | |
136 | if (EFI_ERROR (Status)) {\r | |
137 | return Status;\r | |
138 | }\r | |
139 | \r | |
140 | Status = gBS->OpenProtocol(\r | |
141 | DeviceHandle,\r | |
142 | &gEfiSimpleFileSystemProtocolGuid,\r | |
143 | (VOID**)&EfiSimpleFileSystemProtocol,\r | |
144 | gImageHandle,\r | |
145 | NULL,\r | |
146 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
147 | );\r | |
148 | if (EFI_ERROR (Status)) {\r | |
149 | return Status;\r | |
150 | }\r | |
151 | \r | |
152 | Status = EfiSimpleFileSystemProtocol->OpenVolume(EfiSimpleFileSystemProtocol, &Handle1);\r | |
153 | if (EFI_ERROR (Status)) {\r | |
154 | FileHandle = NULL;\r | |
155 | return Status;\r | |
156 | }\r | |
157 | \r | |
158 | //\r | |
159 | // go down directories one node at a time.\r | |
160 | //\r | |
161 | while (!IsDevicePathEnd (*FilePath)) {\r | |
162 | //\r | |
163 | // For file system access each node should be a file path component\r | |
164 | //\r | |
165 | if (DevicePathType (*FilePath) != MEDIA_DEVICE_PATH ||\r | |
166 | DevicePathSubType (*FilePath) != MEDIA_FILEPATH_DP\r | |
167 | ) {\r | |
168 | FileHandle = NULL;\r | |
169 | return (EFI_INVALID_PARAMETER);\r | |
170 | }\r | |
171 | //\r | |
172 | // Open this file path node\r | |
173 | //\r | |
174 | Handle2 = Handle1;\r | |
175 | Handle1 = NULL;\r | |
176 | \r | |
177 | //\r | |
178 | // Try to test opening an existing file\r | |
179 | //\r | |
180 | Status = Handle2->Open (\r | |
181 | Handle2,\r | |
182 | &Handle1,\r | |
183 | ((FILEPATH_DEVICE_PATH*)*FilePath)->PathName,\r | |
184 | OpenMode &~EFI_FILE_MODE_CREATE,\r | |
185 | 0\r | |
186 | );\r | |
187 | \r | |
188 | //\r | |
189 | // see if the error was that it needs to be created\r | |
190 | //\r | |
191 | if ((EFI_ERROR (Status)) && (OpenMode != (OpenMode &~EFI_FILE_MODE_CREATE))) {\r | |
192 | Status = Handle2->Open (\r | |
193 | Handle2,\r | |
194 | &Handle1,\r | |
195 | ((FILEPATH_DEVICE_PATH*)*FilePath)->PathName,\r | |
196 | OpenMode,\r | |
197 | Attributes\r | |
198 | );\r | |
199 | }\r | |
200 | //\r | |
201 | // Close the last node\r | |
202 | //\r | |
203 | Handle2->Close (Handle2);\r | |
204 | \r | |
205 | if (EFI_ERROR(Status)) {\r | |
206 | return (Status);\r | |
207 | }\r | |
208 | \r | |
209 | //\r | |
210 | // Get the next node\r | |
211 | //\r | |
212 | *FilePath = NextDevicePathNode (*FilePath);\r | |
213 | }\r | |
214 | \r | |
215 | //\r | |
216 | // This is a weak spot since if the undefined SHELL_FILE_HANDLE format changes this must change also!\r | |
217 | //\r | |
218 | *FileHandle = (VOID*)Handle1;\r | |
219 | return EFI_SUCCESS;\r | |
220 | }\r | |
221 | \r | |
762d8ddb | 222 | \r |
ecc722ad | 223 | /**\r |
762d8ddb | 224 | Extract filename from device path. The returned buffer is allocated using AllocateCopyPool.\r |
ed2992b3 DB |
225 | The caller is responsible for freeing the allocated buffer using FreePool(). If return NULL\r |
226 | means not enough memory resource.\r | |
ecc722ad | 227 | \r |
762d8ddb | 228 | @param DevicePath Device path.\r |
ecc722ad | 229 | \r |
ed2992b3 DB |
230 | @retval NULL Not enough memory resourece for AllocateCopyPool.\r |
231 | @retval Other A new allocated string that represents the file name.\r | |
ecc722ad | 232 | \r |
233 | **/\r | |
762d8ddb DB |
234 | CHAR16 *\r |
235 | ExtractFileNameFromDevicePath (\r | |
236 | IN EFI_DEVICE_PATH_PROTOCOL *DevicePath\r | |
ecc722ad | 237 | )\r |
238 | {\r | |
762d8ddb DB |
239 | CHAR16 *String;\r |
240 | CHAR16 *MatchString;\r | |
241 | CHAR16 *LastMatch;\r | |
242 | CHAR16 *FileName;\r | |
243 | UINTN Length;\r | |
ecc722ad | 244 | \r |
762d8ddb | 245 | ASSERT(DevicePath != NULL);\r |
ecc722ad | 246 | \r |
762d8ddb DB |
247 | String = DevicePathToStr(DevicePath);\r |
248 | MatchString = String;\r | |
249 | LastMatch = String;\r | |
ed2992b3 | 250 | FileName = NULL;\r |
ecc722ad | 251 | \r |
762d8ddb DB |
252 | while(MatchString != NULL){\r |
253 | LastMatch = MatchString + 1;\r | |
254 | MatchString = StrStr(LastMatch,L"\\");\r | |
ecc722ad | 255 | }\r |
256 | \r | |
762d8ddb DB |
257 | Length = StrLen(LastMatch);\r |
258 | FileName = AllocateCopyPool ((Length + 1) * sizeof(CHAR16), LastMatch);\r | |
ed2992b3 DB |
259 | if (FileName != NULL) {\r |
260 | *(FileName + Length) = 0;\r | |
261 | }\r | |
ecc722ad | 262 | \r |
762d8ddb | 263 | FreePool(String);\r |
20333c6d | 264 | \r |
762d8ddb | 265 | return FileName;\r |
ecc722ad | 266 | }\r |
267 | \r | |
268 | \r | |
269 | /**\r | |
762d8ddb | 270 | Update the form base on the selected file.\r |
ecc722ad | 271 | \r |
762d8ddb DB |
272 | @param FilePath Point to the file path.\r |
273 | @param FormId The form need to display.\r | |
ecc722ad | 274 | \r |
762d8ddb DB |
275 | @retval TRUE Exit caller function.\r |
276 | @retval FALSE Not exit caller function.\r | |
ecc722ad | 277 | \r |
278 | **/\r | |
762d8ddb DB |
279 | BOOLEAN\r |
280 | UpdatePage(\r | |
281 | IN EFI_DEVICE_PATH_PROTOCOL *FilePath,\r | |
282 | IN EFI_FORM_ID FormId\r | |
ecc722ad | 283 | )\r |
284 | {\r | |
762d8ddb DB |
285 | CHAR16 *FileName;\r |
286 | EFI_STRING_ID StringToken;\r | |
ecc722ad | 287 | \r |
ed2992b3 DB |
288 | FileName = NULL;\r |
289 | \r | |
290 | if (FilePath != NULL) {\r | |
762d8ddb | 291 | FileName = ExtractFileNameFromDevicePath(FilePath);\r |
ecc722ad | 292 | }\r |
ed2992b3 DB |
293 | if (FileName == NULL) {\r |
294 | //\r | |
295 | // FileName = NULL has two case:\r | |
296 | // 1. FilePath == NULL, not select file.\r | |
297 | // 2. FilePath != NULL, but ExtractFileNameFromDevicePath return NULL not enough memory resource.\r | |
298 | // In these two case, no need to update the form, and exit the caller function.\r | |
299 | //\r | |
300 | return TRUE;\r | |
301 | }\r | |
302 | StringToken = HiiSetString (gSecureBootPrivateData->HiiHandle, 0, FileName, NULL);\r | |
ecc722ad | 303 | \r |
762d8ddb | 304 | gSecureBootPrivateData->FileContext->FileName = FileName;\r |
20333c6d | 305 | \r |
762d8ddb DB |
306 | OpenFileByDevicePath(\r |
307 | &FilePath,\r | |
308 | &gSecureBootPrivateData->FileContext->FHandle,\r | |
309 | EFI_FILE_MODE_READ,\r | |
310 | 0\r | |
311 | );\r | |
ecc722ad | 312 | //\r |
762d8ddb | 313 | // Create Subtitle op-code for the display string of the option.\r |
ecc722ad | 314 | //\r |
762d8ddb DB |
315 | RefreshUpdateData ();\r |
316 | mStartLabel->Number = FormId;\r | |
ecc722ad | 317 | \r |
762d8ddb DB |
318 | HiiCreateSubTitleOpCode (\r |
319 | mStartOpCodeHandle,\r | |
320 | StringToken,\r | |
321 | 0,\r | |
322 | 0,\r | |
323 | 0\r | |
324 | );\r | |
325 | \r | |
326 | HiiUpdateForm (\r | |
327 | gSecureBootPrivateData->HiiHandle,\r | |
328 | &gSecureBootConfigFormSetGuid,\r | |
329 | FormId,\r | |
330 | mStartOpCodeHandle, // Label FormId\r | |
331 | mEndOpCodeHandle // LABEL_END\r | |
332 | );\r | |
333 | \r | |
334 | return TRUE;\r | |
ecc722ad | 335 | }\r |
336 | \r | |
337 | /**\r | |
762d8ddb | 338 | Update the PK form base on the input file path info.\r |
ecc722ad | 339 | \r |
762d8ddb DB |
340 | @param FilePath Point to the file path.\r |
341 | \r | |
342 | @retval TRUE Exit caller function.\r | |
343 | @retval FALSE Not exit caller function.\r | |
ecc722ad | 344 | **/\r |
762d8ddb | 345 | BOOLEAN\r |
bac308be | 346 | EFIAPI\r |
762d8ddb DB |
347 | UpdatePKFromFile (\r |
348 | IN EFI_DEVICE_PATH_PROTOCOL *FilePath\r | |
ecc722ad | 349 | )\r |
350 | {\r | |
762d8ddb | 351 | return UpdatePage(FilePath, FORMID_ENROLL_PK_FORM);\r |
ecc722ad | 352 | \r |
ecc722ad | 353 | }\r |
354 | \r | |
355 | /**\r | |
762d8ddb | 356 | Update the KEK form base on the input file path info.\r |
ecc722ad | 357 | \r |
762d8ddb | 358 | @param FilePath Point to the file path.\r |
ecc722ad | 359 | \r |
762d8ddb DB |
360 | @retval TRUE Exit caller function.\r |
361 | @retval FALSE Not exit caller function.\r | |
ecc722ad | 362 | **/\r |
762d8ddb | 363 | BOOLEAN\r |
bac308be | 364 | EFIAPI\r |
762d8ddb DB |
365 | UpdateKEKFromFile (\r |
366 | IN EFI_DEVICE_PATH_PROTOCOL *FilePath\r | |
ecc722ad | 367 | )\r |
368 | {\r | |
762d8ddb | 369 | return UpdatePage(FilePath, FORMID_ENROLL_KEK_FORM);\r |
ecc722ad | 370 | }\r |
371 | \r | |
372 | /**\r | |
762d8ddb | 373 | Update the DB form base on the input file path info.\r |
ecc722ad | 374 | \r |
762d8ddb | 375 | @param FilePath Point to the file path.\r |
ecc722ad | 376 | \r |
762d8ddb DB |
377 | @retval TRUE Exit caller function.\r |
378 | @retval FALSE Not exit caller function.\r | |
ecc722ad | 379 | **/\r |
380 | BOOLEAN\r | |
bac308be | 381 | EFIAPI\r |
762d8ddb DB |
382 | UpdateDBFromFile (\r |
383 | IN EFI_DEVICE_PATH_PROTOCOL *FilePath\r | |
ecc722ad | 384 | )\r |
385 | {\r | |
762d8ddb DB |
386 | return UpdatePage(FilePath, SECUREBOOT_ENROLL_SIGNATURE_TO_DB);\r |
387 | }\r | |
ecc722ad | 388 | \r |
762d8ddb DB |
389 | /**\r |
390 | Update the DBX form base on the input file path info.\r | |
ecc722ad | 391 | \r |
762d8ddb | 392 | @param FilePath Point to the file path.\r |
ecc722ad | 393 | \r |
762d8ddb DB |
394 | @retval TRUE Exit caller function.\r |
395 | @retval FALSE Not exit caller function.\r | |
396 | **/\r | |
397 | BOOLEAN\r | |
bac308be | 398 | EFIAPI\r |
762d8ddb DB |
399 | UpdateDBXFromFile (\r |
400 | IN EFI_DEVICE_PATH_PROTOCOL *FilePath\r | |
401 | )\r | |
402 | {\r | |
403 | return UpdatePage(FilePath, SECUREBOOT_ENROLL_SIGNATURE_TO_DBX);\r | |
ecc722ad | 404 | }\r |
405 | \r | |
406 | /**\r | |
762d8ddb | 407 | Update the DBT form base on the input file path info.\r |
ecc722ad | 408 | \r |
762d8ddb | 409 | @param FilePath Point to the file path.\r |
ecc722ad | 410 | \r |
762d8ddb DB |
411 | @retval TRUE Exit caller function.\r |
412 | @retval FALSE Not exit caller function.\r | |
ecc722ad | 413 | **/\r |
762d8ddb | 414 | BOOLEAN\r |
bac308be | 415 | EFIAPI\r |
762d8ddb DB |
416 | UpdateDBTFromFile (\r |
417 | IN EFI_DEVICE_PATH_PROTOCOL *FilePath\r | |
ecc722ad | 418 | )\r |
419 | {\r | |
762d8ddb | 420 | return UpdatePage(FilePath, SECUREBOOT_ENROLL_SIGNATURE_TO_DBT);\r |
ecc722ad | 421 | }\r |
762d8ddb | 422 | \r |