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fb334ef6 | 1 | /** @file |
2 | * | |
3 | * Copyright (c) 2011, ARM Limited. All rights reserved. | |
4 | * | |
5 | * This program and the accompanying materials | |
6 | * are licensed and made available under the terms and conditions of the BSD License | |
7 | * which accompanies this distribution. The full text of the license may be found at | |
8 | * http://opensource.org/licenses/bsd-license.php | |
9 | * | |
10 | * THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, | |
11 | * WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. | |
12 | * | |
13 | **/ | |
14 | \r | |
15 | #include "Ebl.h"\r | |
16 | ||
17 | #include <Guid/GlobalVariable.h> | |
18 | \r | |
19 | EFI_STATUS\r | |
20 | EblGetCmd (\r | |
21 | IN UINTN Argc,\r | |
22 | IN CHAR8 **Argv\r | |
23 | )\r | |
24 | {\r | |
25 | EFI_STATUS Status = EFI_INVALID_PARAMETER;\r | |
26 | UINTN Size; | |
27 | VOID* Value; | |
28 | CHAR8* AsciiVariableName = NULL; | |
29 | CHAR16* VariableName; | |
30 | UINT32 Index; | |
31 | ||
32 | if (Argc == 1) { | |
33 | AsciiPrint("Variable name is missing.\n"); | |
34 | return Status; | |
35 | } | |
36 | ||
37 | for (Index = 1; Index < Argc; Index++) { | |
38 | if (Argv[Index][0] == '-') { | |
39 | AsciiPrint("Warning: '%a' not recognized.\n",Argv[Index]); | |
40 | } else { | |
41 | AsciiVariableName = Argv[Index]; | |
42 | } | |
43 | } | |
44 | ||
45 | if (AsciiVariableName == NULL) { | |
46 | AsciiPrint("Variable name is missing.\n"); | |
47 | return Status; | |
48 | } else { | |
49 | VariableName = AllocatePool((AsciiStrLen (AsciiVariableName) + 1) * sizeof (CHAR16)); | |
50 | AsciiStrToUnicodeStr (AsciiVariableName,VariableName); | |
51 | } | |
52 | ||
53 | // Try to get the variable size. | |
54 | Value = NULL; | |
55 | Size = 0; | |
56 | Status = gRT->GetVariable (VariableName, &gEfiGlobalVariableGuid, NULL, &Size, Value); | |
57 | if (Status == EFI_NOT_FOUND) { | |
20fd35dc | 58 | AsciiPrint("Variable name '%s' not found.\n",VariableName); |
fb334ef6 | 59 | } else if (Status == EFI_BUFFER_TOO_SMALL) { |
60 | // Get the environment variable value | |
61 | Value = AllocatePool (Size); | |
62 | if (Value == NULL) { | |
63 | return EFI_OUT_OF_RESOURCES; | |
64 | } | |
65 | ||
66 | Status = gRT->GetVariable ((CHAR16 *)VariableName, &gEfiGlobalVariableGuid, NULL, &Size, Value); | |
67 | if (EFI_ERROR (Status)) { | |
68 | AsciiPrint("Error: '%r'\n",Status); | |
69 | } else { | |
70 | AsciiPrint("%a=%a\n",AsciiVariableName,Value); | |
71 | } | |
72 | FreePool(Value); | |
73 | } else { | |
74 | AsciiPrint("Error: '%r'\n",Status); | |
75 | }\r | |
76 | \r | |
77 | FreePool(VariableName);\r | |
78 | return Status;\r | |
79 | }\r | |
80 | \r | |
81 | EFI_STATUS\r | |
82 | EblSetCmd (\r | |
83 | IN UINTN Argc,\r | |
84 | IN CHAR8 **Argv\r | |
85 | )\r | |
86 | {\r | |
87 | EFI_STATUS Status = EFI_INVALID_PARAMETER;\r | |
88 | CHAR8* AsciiVariableSetting = NULL; | |
89 | CHAR8* AsciiVariableName; | |
90 | CHAR8* AsciiValue; | |
91 | UINT32 AsciiValueLength; | |
92 | CHAR16* VariableName; | |
93 | UINT32 Index;\r | |
94 | UINT32 EscapedQuotes = 0;\r | |
95 | BOOLEAN Volatile = FALSE;\r | |
96 | \r | |
97 | if (Argc == 1) { | |
98 | AsciiPrint("Variable name is missing.\n"); | |
99 | return Status; | |
100 | } | |
101 | ||
102 | for (Index = 1; Index < Argc; Index++) { | |
103 | if (AsciiStrCmp(Argv[Index],"-v") == 0) { | |
104 | Volatile = 0; | |
105 | } else if (Argv[Index][0] == '-') { | |
106 | AsciiPrint("Warning: '%a' not recognized.\n",Argv[Index]); | |
107 | } else { | |
108 | AsciiVariableSetting = Argv[Index]; | |
109 | } | |
110 | } | |
111 | ||
112 | if (AsciiVariableSetting == NULL) { | |
113 | AsciiPrint("Variable name is missing.\n"); | |
114 | return Status; | |
115 | } | |
116 | ||
117 | // Check if it is a valid variable setting | |
118 | AsciiValue = AsciiStrStr (AsciiVariableSetting,"=");\r | |
119 | if (AsciiValue == NULL) { | |
20fd35dc | 120 | // |
121 | // There is no value. It means this variable will be deleted | |
122 | // | |
123 | ||
124 | // Convert VariableName into Unicode | |
125 | VariableName = AllocatePool((AsciiStrLen (AsciiVariableSetting) + 1) * sizeof (CHAR16)); | |
126 | AsciiStrToUnicodeStr (AsciiVariableSetting,VariableName); | |
127 | ||
128 | Status = gRT->SetVariable ( | |
129 | VariableName, | |
130 | &gEfiGlobalVariableGuid, | |
131 | ( !Volatile ? EFI_VARIABLE_NON_VOLATILE : 0) | | |
132 | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS, | |
133 | 0, | |
134 | NULL | |
135 | ); | |
136 | if (!EFI_ERROR(Status)) { | |
137 | AsciiPrint("Variable '%s' deleted\n",VariableName); | |
138 | } else { | |
139 | AsciiPrint("Variable setting is incorrect. It should be VariableName=Value\n"); | |
140 | } | |
fb334ef6 | 141 | return Status; |
142 | }\r | |
143 | \r | |
144 | AsciiValue[0] = '\0';\r | |
145 | AsciiVariableName = AsciiVariableSetting;\r | |
146 | AsciiValue++;\r | |
147 | \r | |
148 | // Clean AsciiValue from quote\r | |
149 | if (AsciiValue[0] == '"') {\r | |
150 | AsciiValue++;\r | |
151 | }\r | |
152 | AsciiValueLength = AsciiStrLen (AsciiValue);\r | |
153 | if ((AsciiValue[AsciiValueLength-2] != '\\') && (AsciiValue[AsciiValueLength-1] == '"')) {\r | |
154 | AsciiValue[AsciiValueLength-1] = '\0';\r | |
155 | }\r | |
156 | \r | |
157 | // Clean AsciiValue from escaped quotes\r | |
158 | for (Index = 0; Index < AsciiValueLength; Index++) {\r | |
159 | if ((Index > 0) && (AsciiValue[Index-1] == '\\') && (AsciiValue[Index] == '"')) {\r | |
160 | EscapedQuotes++;\r | |
161 | }\r | |
162 | AsciiValue[Index-EscapedQuotes] = AsciiValue[Index];\r | |
163 | }\r | |
164 | // Fill the end of the value with '\0'\r | |
165 | for (Index = 0; Index < EscapedQuotes; Index++) {\r | |
166 | AsciiValue[AsciiValueLength-1-Index] = '\0';\r | |
167 | }\r | |
168 | \r | |
169 | // Convert VariableName into Unicode\r | |
170 | VariableName = AllocatePool((AsciiStrLen (AsciiVariableName) + 1) * sizeof (CHAR16)); | |
171 | AsciiStrToUnicodeStr (AsciiVariableName,VariableName);\r | |
172 | \r | |
173 | Status = gRT->SetVariable ( | |
174 | VariableName, | |
175 | &gEfiGlobalVariableGuid, | |
176 | ( !Volatile ? EFI_VARIABLE_NON_VOLATILE : 0) | | |
177 | EFI_VARIABLE_BOOTSERVICE_ACCESS | EFI_VARIABLE_RUNTIME_ACCESS, | |
178 | AsciiStrLen (AsciiValue)+1, | |
179 | AsciiValue | |
180 | );\r | |
20fd35dc | 181 | if (!EFI_ERROR(Status)) {\r |
182 | AsciiPrint("'%a'='%a'\n",AsciiVariableName,AsciiValue);\r | |
183 | } | |
fb334ef6 | 184 | \r |
185 | return Status;\r | |
186 | }\r | |
187 | \r | |
188 | GLOBAL_REMOVE_IF_UNREFERENCED const EBL_COMMAND_TABLE mCmdVariableTemplate[] =\r | |
189 | {\r | |
190 | {\r | |
191 | "get",\r | |
192 | " ; get UEFI variable\n\r [v]; verbose",\r | |
193 | NULL,\r | |
194 | EblGetCmd\r | |
195 | },\r | |
196 | {\r | |
197 | "set",\r | |
198 | " ; set UEFI variable\n\r [v]; create volatile variable",\r | |
199 | NULL,\r | |
200 | EblSetCmd\r | |
201 | }\r | |
202 | };\r | |
203 | \r | |
204 | /**\r | |
205 | Initialize the commands in this in this file\r | |
206 | **/\r | |
207 | VOID\r | |
208 | EblInitializeVariableCmds (\r | |
209 | VOID\r | |
210 | )\r | |
211 | {\r | |
212 | EblAddCommands (mCmdVariableTemplate, sizeof (mCmdVariableTemplate)/sizeof (EBL_COMMAND_TABLE));\r | |
213 | }\r |