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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 |
289b714b | 5 | SPDX-License-Identifier: BSD-2-Clause-Patent\r |
ecc722ad | 6 | \r |
7 | **/\r | |
8 | \r | |
9 | #include "SecureBootConfigImpl.h"\r | |
10 | \r | |
ecc722ad | 11 | VOID *mStartOpCodeHandle = NULL;\r |
12 | VOID *mEndOpCodeHandle = NULL;\r | |
13 | EFI_IFR_GUID_LABEL *mStartLabel = NULL;\r | |
14 | EFI_IFR_GUID_LABEL *mEndLabel = NULL;\r | |
15 | \r | |
16 | /**\r | |
762d8ddb | 17 | Refresh the global UpdateData structure.\r |
ecc722ad | 18 | \r |
19 | **/\r | |
762d8ddb DB |
20 | VOID\r |
21 | RefreshUpdateData (\r | |
22 | VOID\r | |
ecc722ad | 23 | )\r |
24 | {\r | |
ecc722ad | 25 | //\r |
762d8ddb | 26 | // Free current updated date\r |
ecc722ad | 27 | //\r |
762d8ddb DB |
28 | if (mStartOpCodeHandle != NULL) {\r |
29 | HiiFreeOpCodeHandle (mStartOpCodeHandle);\r | |
ecc722ad | 30 | }\r |
ecc722ad | 31 | \r |
ecc722ad | 32 | //\r |
762d8ddb | 33 | // Create new OpCode Handle\r |
ecc722ad | 34 | //\r |
762d8ddb | 35 | mStartOpCodeHandle = HiiAllocateOpCodeHandle ();\r |
ecc722ad | 36 | \r |
37 | //\r | |
762d8ddb | 38 | // Create Hii Extend Label OpCode as the start opcode\r |
ecc722ad | 39 | //\r |
762d8ddb DB |
40 | mStartLabel = (EFI_IFR_GUID_LABEL *) HiiCreateGuidOpCode (\r |
41 | mStartOpCodeHandle,\r | |
42 | &gEfiIfrTianoGuid,\r | |
43 | NULL,\r | |
44 | sizeof (EFI_IFR_GUID_LABEL)\r | |
ecc722ad | 45 | );\r |
762d8ddb | 46 | mStartLabel->ExtendOpCode = EFI_IFR_EXTEND_OP_LABEL;\r |
ecc722ad | 47 | }\r |
48 | \r | |
49 | /**\r | |
762d8ddb | 50 | Clean up the dynamic opcode at label and form specified by both LabelId.\r |
ecc722ad | 51 | \r |
762d8ddb DB |
52 | @param[in] LabelId It is both the Form ID and Label ID for opcode deletion.\r |
53 | @param[in] PrivateData Module private data.\r | |
20333c6d | 54 | \r |
ecc722ad | 55 | **/\r |
56 | VOID\r | |
762d8ddb DB |
57 | CleanUpPage (\r |
58 | IN UINT16 LabelId,\r | |
59 | IN SECUREBOOT_CONFIG_PRIVATE_DATA *PrivateData\r | |
ecc722ad | 60 | )\r |
61 | {\r | |
762d8ddb | 62 | RefreshUpdateData ();\r |
ecc722ad | 63 | \r |
64 | //\r | |
762d8ddb | 65 | // Remove all op-codes from dynamic page\r |
ecc722ad | 66 | //\r |
762d8ddb DB |
67 | mStartLabel->Number = LabelId;\r |
68 | HiiUpdateForm (\r | |
69 | PrivateData->HiiHandle,\r | |
70 | &gSecureBootConfigFormSetGuid,\r | |
71 | LabelId,\r | |
72 | mStartOpCodeHandle, // Label LabelId\r | |
73 | mEndOpCodeHandle // LABEL_END\r | |
74 | );\r | |
ecc722ad | 75 | }\r |
76 | \r | |
ecc722ad | 77 | /**\r |
762d8ddb | 78 | Extract filename from device path. The returned buffer is allocated using AllocateCopyPool.\r |
ed2992b3 DB |
79 | The caller is responsible for freeing the allocated buffer using FreePool(). If return NULL\r |
80 | means not enough memory resource.\r | |
ecc722ad | 81 | \r |
762d8ddb | 82 | @param DevicePath Device path.\r |
ecc722ad | 83 | \r |
ed2992b3 DB |
84 | @retval NULL Not enough memory resourece for AllocateCopyPool.\r |
85 | @retval Other A new allocated string that represents the file name.\r | |
ecc722ad | 86 | \r |
87 | **/\r | |
762d8ddb DB |
88 | CHAR16 *\r |
89 | ExtractFileNameFromDevicePath (\r | |
90 | IN EFI_DEVICE_PATH_PROTOCOL *DevicePath\r | |
ecc722ad | 91 | )\r |
92 | {\r | |
762d8ddb DB |
93 | CHAR16 *String;\r |
94 | CHAR16 *MatchString;\r | |
95 | CHAR16 *LastMatch;\r | |
96 | CHAR16 *FileName;\r | |
97 | UINTN Length;\r | |
ecc722ad | 98 | \r |
762d8ddb | 99 | ASSERT(DevicePath != NULL);\r |
ecc722ad | 100 | \r |
762d8ddb DB |
101 | String = DevicePathToStr(DevicePath);\r |
102 | MatchString = String;\r | |
103 | LastMatch = String;\r | |
ed2992b3 | 104 | FileName = NULL;\r |
ecc722ad | 105 | \r |
762d8ddb DB |
106 | while(MatchString != NULL){\r |
107 | LastMatch = MatchString + 1;\r | |
108 | MatchString = StrStr(LastMatch,L"\\");\r | |
ecc722ad | 109 | }\r |
110 | \r | |
762d8ddb DB |
111 | Length = StrLen(LastMatch);\r |
112 | FileName = AllocateCopyPool ((Length + 1) * sizeof(CHAR16), LastMatch);\r | |
ed2992b3 DB |
113 | if (FileName != NULL) {\r |
114 | *(FileName + Length) = 0;\r | |
115 | }\r | |
ecc722ad | 116 | \r |
762d8ddb | 117 | FreePool(String);\r |
20333c6d | 118 | \r |
762d8ddb | 119 | return FileName;\r |
ecc722ad | 120 | }\r |
121 | \r | |
122 | \r | |
123 | /**\r | |
762d8ddb | 124 | Update the form base on the selected file.\r |
ecc722ad | 125 | \r |
762d8ddb DB |
126 | @param FilePath Point to the file path.\r |
127 | @param FormId The form need to display.\r | |
ecc722ad | 128 | \r |
762d8ddb DB |
129 | @retval TRUE Exit caller function.\r |
130 | @retval FALSE Not exit caller function.\r | |
ecc722ad | 131 | \r |
132 | **/\r | |
762d8ddb DB |
133 | BOOLEAN\r |
134 | UpdatePage(\r | |
135 | IN EFI_DEVICE_PATH_PROTOCOL *FilePath,\r | |
136 | IN EFI_FORM_ID FormId\r | |
ecc722ad | 137 | )\r |
138 | {\r | |
762d8ddb DB |
139 | CHAR16 *FileName;\r |
140 | EFI_STRING_ID StringToken;\r | |
ecc722ad | 141 | \r |
ed2992b3 DB |
142 | FileName = NULL;\r |
143 | \r | |
144 | if (FilePath != NULL) {\r | |
762d8ddb | 145 | FileName = ExtractFileNameFromDevicePath(FilePath);\r |
ecc722ad | 146 | }\r |
ed2992b3 DB |
147 | if (FileName == NULL) {\r |
148 | //\r | |
149 | // FileName = NULL has two case:\r | |
150 | // 1. FilePath == NULL, not select file.\r | |
151 | // 2. FilePath != NULL, but ExtractFileNameFromDevicePath return NULL not enough memory resource.\r | |
152 | // In these two case, no need to update the form, and exit the caller function.\r | |
153 | //\r | |
154 | return TRUE;\r | |
155 | }\r | |
156 | StringToken = HiiSetString (gSecureBootPrivateData->HiiHandle, 0, FileName, NULL);\r | |
ecc722ad | 157 | \r |
762d8ddb | 158 | gSecureBootPrivateData->FileContext->FileName = FileName;\r |
20333c6d | 159 | \r |
1bf50074 | 160 | EfiOpenFileByDevicePath (\r |
762d8ddb DB |
161 | &FilePath,\r |
162 | &gSecureBootPrivateData->FileContext->FHandle,\r | |
163 | EFI_FILE_MODE_READ,\r | |
164 | 0\r | |
165 | );\r | |
ecc722ad | 166 | //\r |
762d8ddb | 167 | // Create Subtitle op-code for the display string of the option.\r |
ecc722ad | 168 | //\r |
762d8ddb DB |
169 | RefreshUpdateData ();\r |
170 | mStartLabel->Number = FormId;\r | |
ecc722ad | 171 | \r |
762d8ddb DB |
172 | HiiCreateSubTitleOpCode (\r |
173 | mStartOpCodeHandle,\r | |
174 | StringToken,\r | |
175 | 0,\r | |
176 | 0,\r | |
177 | 0\r | |
178 | );\r | |
179 | \r | |
180 | HiiUpdateForm (\r | |
181 | gSecureBootPrivateData->HiiHandle,\r | |
182 | &gSecureBootConfigFormSetGuid,\r | |
183 | FormId,\r | |
184 | mStartOpCodeHandle, // Label FormId\r | |
185 | mEndOpCodeHandle // LABEL_END\r | |
186 | );\r | |
187 | \r | |
188 | return TRUE;\r | |
ecc722ad | 189 | }\r |
190 | \r | |
191 | /**\r | |
762d8ddb | 192 | Update the PK form base on the input file path info.\r |
ecc722ad | 193 | \r |
762d8ddb DB |
194 | @param FilePath Point to the file path.\r |
195 | \r | |
196 | @retval TRUE Exit caller function.\r | |
197 | @retval FALSE Not exit caller function.\r | |
ecc722ad | 198 | **/\r |
762d8ddb | 199 | BOOLEAN\r |
bac308be | 200 | EFIAPI\r |
762d8ddb DB |
201 | UpdatePKFromFile (\r |
202 | IN EFI_DEVICE_PATH_PROTOCOL *FilePath\r | |
ecc722ad | 203 | )\r |
204 | {\r | |
762d8ddb | 205 | return UpdatePage(FilePath, FORMID_ENROLL_PK_FORM);\r |
ecc722ad | 206 | \r |
ecc722ad | 207 | }\r |
208 | \r | |
209 | /**\r | |
762d8ddb | 210 | Update the KEK form base on the input file path info.\r |
ecc722ad | 211 | \r |
762d8ddb | 212 | @param FilePath Point to the file path.\r |
ecc722ad | 213 | \r |
762d8ddb DB |
214 | @retval TRUE Exit caller function.\r |
215 | @retval FALSE Not exit caller function.\r | |
ecc722ad | 216 | **/\r |
762d8ddb | 217 | BOOLEAN\r |
bac308be | 218 | EFIAPI\r |
762d8ddb DB |
219 | UpdateKEKFromFile (\r |
220 | IN EFI_DEVICE_PATH_PROTOCOL *FilePath\r | |
ecc722ad | 221 | )\r |
222 | {\r | |
762d8ddb | 223 | return UpdatePage(FilePath, FORMID_ENROLL_KEK_FORM);\r |
ecc722ad | 224 | }\r |
225 | \r | |
226 | /**\r | |
762d8ddb | 227 | Update the DB form base on the input file path info.\r |
ecc722ad | 228 | \r |
762d8ddb | 229 | @param FilePath Point to the file path.\r |
ecc722ad | 230 | \r |
762d8ddb DB |
231 | @retval TRUE Exit caller function.\r |
232 | @retval FALSE Not exit caller function.\r | |
ecc722ad | 233 | **/\r |
234 | BOOLEAN\r | |
bac308be | 235 | EFIAPI\r |
762d8ddb DB |
236 | UpdateDBFromFile (\r |
237 | IN EFI_DEVICE_PATH_PROTOCOL *FilePath\r | |
ecc722ad | 238 | )\r |
239 | {\r | |
762d8ddb DB |
240 | return UpdatePage(FilePath, SECUREBOOT_ENROLL_SIGNATURE_TO_DB);\r |
241 | }\r | |
ecc722ad | 242 | \r |
762d8ddb DB |
243 | /**\r |
244 | Update the DBX form base on the input file path info.\r | |
ecc722ad | 245 | \r |
762d8ddb | 246 | @param FilePath Point to the file path.\r |
ecc722ad | 247 | \r |
762d8ddb DB |
248 | @retval TRUE Exit caller function.\r |
249 | @retval FALSE Not exit caller function.\r | |
250 | **/\r | |
251 | BOOLEAN\r | |
bac308be | 252 | EFIAPI\r |
762d8ddb DB |
253 | UpdateDBXFromFile (\r |
254 | IN EFI_DEVICE_PATH_PROTOCOL *FilePath\r | |
255 | )\r | |
256 | {\r | |
257 | return UpdatePage(FilePath, SECUREBOOT_ENROLL_SIGNATURE_TO_DBX);\r | |
ecc722ad | 258 | }\r |
259 | \r | |
260 | /**\r | |
762d8ddb | 261 | Update the DBT form base on the input file path info.\r |
ecc722ad | 262 | \r |
762d8ddb | 263 | @param FilePath Point to the file path.\r |
ecc722ad | 264 | \r |
762d8ddb DB |
265 | @retval TRUE Exit caller function.\r |
266 | @retval FALSE Not exit caller function.\r | |
ecc722ad | 267 | **/\r |
762d8ddb | 268 | BOOLEAN\r |
bac308be | 269 | EFIAPI\r |
762d8ddb DB |
270 | UpdateDBTFromFile (\r |
271 | IN EFI_DEVICE_PATH_PROTOCOL *FilePath\r | |
ecc722ad | 272 | )\r |
273 | {\r | |
762d8ddb | 274 | return UpdatePage(FilePath, SECUREBOOT_ENROLL_SIGNATURE_TO_DBT);\r |
ecc722ad | 275 | }\r |
762d8ddb | 276 | \r |