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Update the code of processing device path info in browser to follow UEFI spec.
[mirror_edk2.git] / MdeModulePkg / Universal / SetupBrowserDxe / Expression.c
1 /** @file
2 Utility functions for expression evaluation.
3
4 Copyright (c) 2007 - 2013, Intel Corporation. All rights reserved.<BR>
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
15 #include "Setup.h"
16
17 //
18 // Global stack used to evaluate boolean expresions
19 //
20 EFI_HII_VALUE *mOpCodeScopeStack = NULL;
21 EFI_HII_VALUE *mOpCodeScopeStackEnd = NULL;
22 EFI_HII_VALUE *mOpCodeScopeStackPointer = NULL;
23
24 EFI_HII_VALUE *mExpressionEvaluationStack = NULL;
25 EFI_HII_VALUE *mExpressionEvaluationStackEnd = NULL;
26 EFI_HII_VALUE *mExpressionEvaluationStackPointer = NULL;
27 UINTN mExpressionEvaluationStackOffset = 0;
28
29 EFI_HII_VALUE *mCurrentExpressionStack = NULL;
30 EFI_HII_VALUE *mCurrentExpressionEnd = NULL;
31 EFI_HII_VALUE *mCurrentExpressionPointer = NULL;
32
33 EFI_HII_VALUE *mMapExpressionListStack = NULL;
34 EFI_HII_VALUE *mMapExpressionListEnd = NULL;
35 EFI_HII_VALUE *mMapExpressionListPointer = NULL;
36
37 FORM_EXPRESSION **mFormExpressionStack = NULL;
38 FORM_EXPRESSION **mFormExpressionEnd = NULL;
39 FORM_EXPRESSION **mFormExpressionPointer = NULL;
40
41 FORM_EXPRESSION **mStatementExpressionStack = NULL;
42 FORM_EXPRESSION **mStatementExpressionEnd = NULL;
43 FORM_EXPRESSION **mStatementExpressionPointer = NULL;
44
45 FORM_EXPRESSION **mOptionExpressionStack = NULL;
46 FORM_EXPRESSION **mOptionExpressionEnd = NULL;
47 FORM_EXPRESSION **mOptionExpressionPointer = NULL;
48
49
50 //
51 // Unicode collation protocol interface
52 //
53 EFI_UNICODE_COLLATION_PROTOCOL *mUnicodeCollation = NULL;
54 EFI_USER_MANAGER_PROTOCOL *mUserManager = NULL;
55
56 /**
57 Grow size of the stack.
58
59 This is an internal function.
60
61 @param Stack On input: old stack; On output: new stack
62 @param StackPtr On input: old stack pointer; On output: new stack
63 pointer
64 @param StackEnd On input: old stack end; On output: new stack end
65
66 @retval EFI_SUCCESS Grow stack success.
67 @retval EFI_OUT_OF_RESOURCES No enough memory for stack space.
68
69 **/
70 EFI_STATUS
71 GrowStack (
72 IN OUT EFI_HII_VALUE **Stack,
73 IN OUT EFI_HII_VALUE **StackPtr,
74 IN OUT EFI_HII_VALUE **StackEnd
75 )
76 {
77 UINTN Size;
78 EFI_HII_VALUE *NewStack;
79
80 Size = EXPRESSION_STACK_SIZE_INCREMENT;
81 if (*StackPtr != NULL) {
82 Size = Size + (*StackEnd - *Stack);
83 }
84
85 NewStack = AllocatePool (Size * sizeof (EFI_HII_VALUE));
86 if (NewStack == NULL) {
87 return EFI_OUT_OF_RESOURCES;
88 }
89
90 if (*StackPtr != NULL) {
91 //
92 // Copy from Old Stack to the New Stack
93 //
94 CopyMem (
95 NewStack,
96 *Stack,
97 (*StackEnd - *Stack) * sizeof (EFI_HII_VALUE)
98 );
99
100 //
101 // Free The Old Stack
102 //
103 FreePool (*Stack);
104 }
105
106 //
107 // Make the Stack pointer point to the old data in the new stack
108 //
109 *StackPtr = NewStack + (*StackPtr - *Stack);
110 *Stack = NewStack;
111 *StackEnd = NewStack + Size;
112
113 return EFI_SUCCESS;
114 }
115
116
117 /**
118 Push an element onto the Boolean Stack.
119
120 @param Stack On input: old stack; On output: new stack
121 @param StackPtr On input: old stack pointer; On output: new stack
122 pointer
123 @param StackEnd On input: old stack end; On output: new stack end
124 @param Data Data to push.
125
126 @retval EFI_SUCCESS Push stack success.
127
128 **/
129 EFI_STATUS
130 PushStack (
131 IN OUT EFI_HII_VALUE **Stack,
132 IN OUT EFI_HII_VALUE **StackPtr,
133 IN OUT EFI_HII_VALUE **StackEnd,
134 IN EFI_HII_VALUE *Data
135 )
136 {
137 EFI_STATUS Status;
138
139 //
140 // Check for a stack overflow condition
141 //
142 if (*StackPtr >= *StackEnd) {
143 //
144 // Grow the stack
145 //
146 Status = GrowStack (Stack, StackPtr, StackEnd);
147 if (EFI_ERROR (Status)) {
148 return Status;
149 }
150 }
151
152 //
153 // Push the item onto the stack
154 //
155 CopyMem (*StackPtr, Data, sizeof (EFI_HII_VALUE));
156 if (Data->Type == EFI_IFR_TYPE_BUFFER) {
157 (*StackPtr)->Buffer = AllocateCopyPool(Data->BufferLen, Data->Buffer);
158 ASSERT ((*StackPtr)->Buffer != NULL);
159 }
160
161 *StackPtr = *StackPtr + 1;
162
163 return EFI_SUCCESS;
164 }
165
166
167 /**
168 Pop an element from the stack.
169
170 @param Stack On input: old stack
171 @param StackPtr On input: old stack pointer; On output: new stack pointer
172 @param Data Data to pop.
173
174 @retval EFI_SUCCESS The value was popped onto the stack.
175 @retval EFI_ACCESS_DENIED The pop operation underflowed the stack
176
177 **/
178 EFI_STATUS
179 PopStack (
180 IN EFI_HII_VALUE *Stack,
181 IN OUT EFI_HII_VALUE **StackPtr,
182 OUT EFI_HII_VALUE *Data
183 )
184 {
185 //
186 // Check for a stack underflow condition
187 //
188 if (*StackPtr == Stack) {
189 return EFI_ACCESS_DENIED;
190 }
191
192 //
193 // Pop the item off the stack
194 //
195 *StackPtr = *StackPtr - 1;
196 CopyMem (Data, *StackPtr, sizeof (EFI_HII_VALUE));
197 return EFI_SUCCESS;
198 }
199
200
201 /**
202 Reset stack pointer to begin of the stack.
203
204 **/
205 VOID
206 ResetCurrentExpressionStack (
207 VOID
208 )
209 {
210 mCurrentExpressionPointer = mCurrentExpressionStack;
211 mFormExpressionPointer = mFormExpressionStack;
212 mStatementExpressionPointer = mStatementExpressionStack;
213 mOptionExpressionPointer = mOptionExpressionStack;
214 }
215
216
217 /**
218 Push current expression onto the Stack
219
220 @param Pointer Pointer to current expression.
221
222 @retval EFI_SUCCESS The value was pushed onto the stack.
223 @retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the stack.
224
225 **/
226 EFI_STATUS
227 PushCurrentExpression (
228 IN VOID *Pointer
229 )
230 {
231 EFI_HII_VALUE Data;
232
233 Data.Type = EFI_IFR_TYPE_NUM_SIZE_64;
234 Data.Value.u64 = (UINT64) (UINTN) Pointer;
235
236 return PushStack (
237 &mCurrentExpressionStack,
238 &mCurrentExpressionPointer,
239 &mCurrentExpressionEnd,
240 &Data
241 );
242 }
243
244
245 /**
246 Pop current expression from the Stack
247
248 @param Pointer Pointer to current expression to be pop.
249
250 @retval EFI_SUCCESS The value was pushed onto the stack.
251 @retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the stack.
252
253 **/
254 EFI_STATUS
255 PopCurrentExpression (
256 OUT VOID **Pointer
257 )
258 {
259 EFI_STATUS Status;
260 EFI_HII_VALUE Data;
261
262 Status = PopStack (
263 mCurrentExpressionStack,
264 &mCurrentExpressionPointer,
265 &Data
266 );
267
268 *Pointer = (VOID *) (UINTN) Data.Value.u64;
269
270 return Status;
271 }
272
273 /**
274 Reset stack pointer to begin of the stack.
275
276 **/
277 VOID
278 ResetMapExpressionListStack (
279 VOID
280 )
281 {
282 mMapExpressionListPointer = mMapExpressionListStack;
283 }
284
285
286 /**
287 Grow size of the stack.
288
289 This is an internal function.
290
291 @param Stack On input: old stack; On output: new stack
292 @param StackPtr On input: old stack pointer; On output: new stack
293 pointer
294 @param StackEnd On input: old stack end; On output: new stack end
295 @param MemberSize The stack member size.
296
297 @retval EFI_SUCCESS Grow stack success.
298 @retval EFI_OUT_OF_RESOURCES No enough memory for stack space.
299
300 **/
301 EFI_STATUS
302 GrowConditionalStack (
303 IN OUT FORM_EXPRESSION ***Stack,
304 IN OUT FORM_EXPRESSION ***StackPtr,
305 IN OUT FORM_EXPRESSION ***StackEnd,
306 IN UINTN MemberSize
307 )
308 {
309 UINTN Size;
310 FORM_EXPRESSION **NewStack;
311
312 Size = EXPRESSION_STACK_SIZE_INCREMENT;
313 if (*StackPtr != NULL) {
314 Size = Size + (*StackEnd - *Stack);
315 }
316
317 NewStack = AllocatePool (Size * MemberSize);
318 if (NewStack == NULL) {
319 return EFI_OUT_OF_RESOURCES;
320 }
321
322 if (*StackPtr != NULL) {
323 //
324 // Copy from Old Stack to the New Stack
325 //
326 CopyMem (
327 NewStack,
328 *Stack,
329 (*StackEnd - *Stack) * MemberSize
330 );
331
332 //
333 // Free The Old Stack
334 //
335 FreePool (*Stack);
336 }
337
338 //
339 // Make the Stack pointer point to the old data in the new stack
340 //
341 *StackPtr = NewStack + (*StackPtr - *Stack);
342 *Stack = NewStack;
343 *StackEnd = NewStack + Size;
344
345 return EFI_SUCCESS;
346 }
347
348 /**
349 Push an element onto the Stack.
350
351 @param Stack On input: old stack; On output: new stack
352 @param StackPtr On input: old stack pointer; On output: new stack
353 pointer
354 @param StackEnd On input: old stack end; On output: new stack end
355 @param Data Data to push.
356
357 @retval EFI_SUCCESS Push stack success.
358
359 **/
360 EFI_STATUS
361 PushConditionalStack (
362 IN OUT FORM_EXPRESSION ***Stack,
363 IN OUT FORM_EXPRESSION ***StackPtr,
364 IN OUT FORM_EXPRESSION ***StackEnd,
365 IN FORM_EXPRESSION **Data
366 )
367 {
368 EFI_STATUS Status;
369
370 //
371 // Check for a stack overflow condition
372 //
373 if (*StackPtr >= *StackEnd) {
374 //
375 // Grow the stack
376 //
377 Status = GrowConditionalStack (Stack, StackPtr, StackEnd, sizeof (FORM_EXPRESSION *));
378 if (EFI_ERROR (Status)) {
379 return Status;
380 }
381 }
382
383 //
384 // Push the item onto the stack
385 //
386 CopyMem (*StackPtr, Data, sizeof (FORM_EXPRESSION *));
387 *StackPtr = *StackPtr + 1;
388
389 return EFI_SUCCESS;
390
391 }
392
393 /**
394 Pop an element from the stack.
395
396 @param Stack On input: old stack
397 @param StackPtr On input: old stack pointer; On output: new stack pointer
398 @param Data Data to pop.
399
400 @retval EFI_SUCCESS The value was popped onto the stack.
401 @retval EFI_ACCESS_DENIED The pop operation underflowed the stack
402
403 **/
404 EFI_STATUS
405 PopConditionalStack (
406 IN FORM_EXPRESSION **Stack,
407 IN OUT FORM_EXPRESSION ***StackPtr,
408 OUT FORM_EXPRESSION **Data
409 )
410 {
411 //
412 // Check for a stack underflow condition
413 //
414 if (*StackPtr == Stack) {
415 return EFI_ACCESS_DENIED;
416 }
417
418 //
419 // Pop the item off the stack
420 //
421 *StackPtr = *StackPtr - 1;
422 CopyMem (Data, *StackPtr, sizeof (FORM_EXPRESSION *));
423 return EFI_SUCCESS;
424
425 }
426
427 /**
428 Get the expression list count.
429
430 @param Level Which type this expression belong to. Form,
431 statement or option?
432
433 @retval >=0 The expression count
434 @retval -1 Input parameter error.
435
436 **/
437 INTN
438 GetConditionalExpressionCount (
439 IN EXPRESS_LEVEL Level
440 )
441 {
442 switch (Level) {
443 case ExpressForm:
444 return mFormExpressionPointer - mFormExpressionStack;
445 case ExpressStatement:
446 return mStatementExpressionPointer - mStatementExpressionStack;
447 case ExpressOption:
448 return mOptionExpressionPointer - mOptionExpressionStack;
449 default:
450 ASSERT (FALSE);
451 return -1;
452 }
453 }
454
455 /**
456 Get the expression Buffer pointer.
457
458 @param Level Which type this expression belong to. Form,
459 statement or option?
460
461 @retval The start pointer of the expression buffer or NULL.
462
463 **/
464 FORM_EXPRESSION **
465 GetConditionalExpressionList (
466 IN EXPRESS_LEVEL Level
467 )
468 {
469 switch (Level) {
470 case ExpressForm:
471 return mFormExpressionStack;
472 case ExpressStatement:
473 return mStatementExpressionStack;
474 case ExpressOption:
475 return mOptionExpressionStack;
476 default:
477 ASSERT (FALSE);
478 return NULL;
479 }
480 }
481
482
483 /**
484 Push the expression options onto the Stack.
485
486 @param Pointer Pointer to the current expression.
487 @param Level Which type this expression belong to. Form,
488 statement or option?
489
490 @retval EFI_SUCCESS The value was pushed onto the stack.
491 @retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the stack.
492
493 **/
494 EFI_STATUS
495 PushConditionalExpression (
496 IN FORM_EXPRESSION *Pointer,
497 IN EXPRESS_LEVEL Level
498 )
499 {
500 switch (Level) {
501 case ExpressForm:
502 return PushConditionalStack (
503 &mFormExpressionStack,
504 &mFormExpressionPointer,
505 &mFormExpressionEnd,
506 &Pointer
507 );
508 case ExpressStatement:
509 return PushConditionalStack (
510 &mStatementExpressionStack,
511 &mStatementExpressionPointer,
512 &mStatementExpressionEnd,
513 &Pointer
514 );
515 case ExpressOption:
516 return PushConditionalStack (
517 &mOptionExpressionStack,
518 &mOptionExpressionPointer,
519 &mOptionExpressionEnd,
520 &Pointer
521 );
522 default:
523 ASSERT (FALSE);
524 return EFI_INVALID_PARAMETER;
525 }
526 }
527
528 /**
529 Pop the expression options from the Stack
530
531 @param Level Which type this expression belong to. Form,
532 statement or option?
533
534 @retval EFI_SUCCESS The value was pushed onto the stack.
535 @retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the stack.
536
537 **/
538 EFI_STATUS
539 PopConditionalExpression (
540 IN EXPRESS_LEVEL Level
541 )
542 {
543 FORM_EXPRESSION *Pointer;
544
545 switch (Level) {
546 case ExpressForm:
547 return PopConditionalStack (
548 mFormExpressionStack,
549 &mFormExpressionPointer,
550 &Pointer
551 );
552
553 case ExpressStatement:
554 return PopConditionalStack (
555 mStatementExpressionStack,
556 &mStatementExpressionPointer,
557 &Pointer
558 );
559
560 case ExpressOption:
561 return PopConditionalStack (
562 mOptionExpressionStack,
563 &mOptionExpressionPointer,
564 &Pointer
565 );
566
567 default:
568 ASSERT (FALSE);
569 return EFI_INVALID_PARAMETER;
570 }
571 }
572
573
574 /**
575 Push the list of map expression onto the Stack
576
577 @param Pointer Pointer to the list of map expression to be pushed.
578
579 @retval EFI_SUCCESS The value was pushed onto the stack.
580 @retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the stack.
581
582 **/
583 EFI_STATUS
584 PushMapExpressionList (
585 IN VOID *Pointer
586 )
587 {
588 EFI_HII_VALUE Data;
589
590 Data.Type = EFI_IFR_TYPE_NUM_SIZE_64;
591 Data.Value.u64 = (UINT64) (UINTN) Pointer;
592
593 return PushStack (
594 &mMapExpressionListStack,
595 &mMapExpressionListPointer,
596 &mMapExpressionListEnd,
597 &Data
598 );
599 }
600
601
602 /**
603 Pop the list of map expression from the Stack
604
605 @param Pointer Pointer to the list of map expression to be pop.
606
607 @retval EFI_SUCCESS The value was pushed onto the stack.
608 @retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the stack.
609
610 **/
611 EFI_STATUS
612 PopMapExpressionList (
613 OUT VOID **Pointer
614 )
615 {
616 EFI_STATUS Status;
617 EFI_HII_VALUE Data;
618
619 Status = PopStack (
620 mMapExpressionListStack,
621 &mMapExpressionListPointer,
622 &Data
623 );
624
625 *Pointer = (VOID *) (UINTN) Data.Value.u64;
626
627 return Status;
628 }
629
630 /**
631 Reset stack pointer to begin of the stack.
632
633 **/
634 VOID
635 ResetScopeStack (
636 VOID
637 )
638 {
639 mOpCodeScopeStackPointer = mOpCodeScopeStack;
640 }
641
642
643 /**
644 Push an Operand onto the Stack
645
646 @param Operand Operand to push.
647
648 @retval EFI_SUCCESS The value was pushed onto the stack.
649 @retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the
650 stack.
651
652 **/
653 EFI_STATUS
654 PushScope (
655 IN UINT8 Operand
656 )
657 {
658 EFI_HII_VALUE Data;
659
660 Data.Type = EFI_IFR_TYPE_NUM_SIZE_8;
661 Data.Value.u8 = Operand;
662
663 return PushStack (
664 &mOpCodeScopeStack,
665 &mOpCodeScopeStackPointer,
666 &mOpCodeScopeStackEnd,
667 &Data
668 );
669 }
670
671
672 /**
673 Pop an Operand from the Stack
674
675 @param Operand Operand to pop.
676
677 @retval EFI_SUCCESS The value was pushed onto the stack.
678 @retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the
679 stack.
680
681 **/
682 EFI_STATUS
683 PopScope (
684 OUT UINT8 *Operand
685 )
686 {
687 EFI_STATUS Status;
688 EFI_HII_VALUE Data;
689
690 Status = PopStack (
691 mOpCodeScopeStack,
692 &mOpCodeScopeStackPointer,
693 &Data
694 );
695
696 *Operand = Data.Value.u8;
697
698 return Status;
699 }
700
701
702 /**
703 Push an Expression value onto the Stack
704
705 @param Value Expression value to push.
706
707 @retval EFI_SUCCESS The value was pushed onto the stack.
708 @retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the
709 stack.
710
711 **/
712 EFI_STATUS
713 PushExpression (
714 IN EFI_HII_VALUE *Value
715 )
716 {
717 return PushStack (
718 &mExpressionEvaluationStack,
719 &mExpressionEvaluationStackPointer,
720 &mExpressionEvaluationStackEnd,
721 Value
722 );
723 }
724
725
726 /**
727 Pop an Expression value from the stack.
728
729 @param Value Expression value to pop.
730
731 @retval EFI_SUCCESS The value was popped onto the stack.
732 @retval EFI_ACCESS_DENIED The pop operation underflowed the stack
733
734 **/
735 EFI_STATUS
736 PopExpression (
737 OUT EFI_HII_VALUE *Value
738 )
739 {
740 return PopStack (
741 mExpressionEvaluationStack + mExpressionEvaluationStackOffset,
742 &mExpressionEvaluationStackPointer,
743 Value
744 );
745 }
746
747 /**
748 Get current stack offset from stack start.
749
750 @return Stack offset to stack start.
751 **/
752 UINTN
753 SaveExpressionEvaluationStackOffset (
754 )
755 {
756 UINTN TempStackOffset;
757 TempStackOffset = mExpressionEvaluationStackOffset;
758 mExpressionEvaluationStackOffset = mExpressionEvaluationStackPointer - mExpressionEvaluationStack;
759 return TempStackOffset;
760 }
761
762 /**
763 Restore stack offset based on input stack offset
764
765 @param StackOffset Offset to stack start.
766
767 **/
768 VOID
769 RestoreExpressionEvaluationStackOffset (
770 UINTN StackOffset
771 )
772 {
773 mExpressionEvaluationStackOffset = StackOffset;
774 }
775
776 /**
777 Get Form given its FormId.
778
779 @param FormSet The formset which contains this form.
780 @param FormId Id of this form.
781
782 @retval Pointer The form.
783 @retval NULL Specified Form is not found in the formset.
784
785 **/
786 FORM_BROWSER_FORM *
787 IdToForm (
788 IN FORM_BROWSER_FORMSET *FormSet,
789 IN UINT16 FormId
790 )
791 {
792 LIST_ENTRY *Link;
793 FORM_BROWSER_FORM *Form;
794
795 Link = GetFirstNode (&FormSet->FormListHead);
796 while (!IsNull (&FormSet->FormListHead, Link)) {
797 Form = FORM_BROWSER_FORM_FROM_LINK (Link);
798
799 if (Form->FormId == FormId) {
800 return Form;
801 }
802
803 Link = GetNextNode (&FormSet->FormListHead, Link);
804 }
805
806 return NULL;
807 }
808
809
810 /**
811 Search a Question in Form scope using its QuestionId.
812
813 @param Form The form which contains this Question.
814 @param QuestionId Id of this Question.
815
816 @retval Pointer The Question.
817 @retval NULL Specified Question not found in the form.
818
819 **/
820 FORM_BROWSER_STATEMENT *
821 IdToQuestion2 (
822 IN FORM_BROWSER_FORM *Form,
823 IN UINT16 QuestionId
824 )
825 {
826 LIST_ENTRY *Link;
827 FORM_BROWSER_STATEMENT *Question;
828
829 if (QuestionId == 0 || Form == NULL) {
830 //
831 // The value of zero is reserved
832 //
833 return NULL;
834 }
835
836 Link = GetFirstNode (&Form->StatementListHead);
837 while (!IsNull (&Form->StatementListHead, Link)) {
838 Question = FORM_BROWSER_STATEMENT_FROM_LINK (Link);
839
840 if (Question->QuestionId == QuestionId) {
841 return Question;
842 }
843
844 Link = GetNextNode (&Form->StatementListHead, Link);
845 }
846
847 return NULL;
848 }
849
850
851 /**
852 Search a Question in Formset scope using its QuestionId.
853
854 @param FormSet The formset which contains this form.
855 @param Form The form which contains this Question.
856 @param QuestionId Id of this Question.
857
858 @retval Pointer The Question.
859 @retval NULL Specified Question not found in the form.
860
861 **/
862 FORM_BROWSER_STATEMENT *
863 IdToQuestion (
864 IN FORM_BROWSER_FORMSET *FormSet,
865 IN FORM_BROWSER_FORM *Form,
866 IN UINT16 QuestionId
867 )
868 {
869 LIST_ENTRY *Link;
870 FORM_BROWSER_STATEMENT *Question;
871
872 //
873 // Search in the form scope first
874 //
875 Question = IdToQuestion2 (Form, QuestionId);
876 if (Question != NULL) {
877 return Question;
878 }
879
880 //
881 // Search in the formset scope
882 //
883 Link = GetFirstNode (&FormSet->FormListHead);
884 while (!IsNull (&FormSet->FormListHead, Link)) {
885 Form = FORM_BROWSER_FORM_FROM_LINK (Link);
886
887 Question = IdToQuestion2 (Form, QuestionId);
888 if (Question != NULL) {
889 //
890 // EFI variable storage may be updated by Callback() asynchronous,
891 // to keep synchronous, always reload the Question Value.
892 //
893 if (Question->Storage->Type == EFI_HII_VARSTORE_EFI_VARIABLE) {
894 GetQuestionValue (FormSet, Form, Question, GetSetValueWithHiiDriver);
895 }
896
897 return Question;
898 }
899
900 Link = GetNextNode (&FormSet->FormListHead, Link);
901 }
902
903 return NULL;
904 }
905
906
907 /**
908 Get Expression given its RuleId.
909
910 @param Form The form which contains this Expression.
911 @param RuleId Id of this Expression.
912
913 @retval Pointer The Expression.
914 @retval NULL Specified Expression not found in the form.
915
916 **/
917 FORM_EXPRESSION *
918 RuleIdToExpression (
919 IN FORM_BROWSER_FORM *Form,
920 IN UINT8 RuleId
921 )
922 {
923 LIST_ENTRY *Link;
924 FORM_EXPRESSION *Expression;
925
926 Link = GetFirstNode (&Form->ExpressionListHead);
927 while (!IsNull (&Form->ExpressionListHead, Link)) {
928 Expression = FORM_EXPRESSION_FROM_LINK (Link);
929
930 if (Expression->Type == EFI_HII_EXPRESSION_RULE && Expression->RuleId == RuleId) {
931 return Expression;
932 }
933
934 Link = GetNextNode (&Form->ExpressionListHead, Link);
935 }
936
937 return NULL;
938 }
939
940
941 /**
942 Locate the Unicode Collation Protocol interface for later use.
943
944 @retval EFI_SUCCESS Protocol interface initialize success.
945 @retval Other Protocol interface initialize failed.
946
947 **/
948 EFI_STATUS
949 InitializeUnicodeCollationProtocol (
950 VOID
951 )
952 {
953 EFI_STATUS Status;
954
955 if (mUnicodeCollation != NULL) {
956 return EFI_SUCCESS;
957 }
958
959 //
960 // BUGBUG: Proper impelmentation is to locate all Unicode Collation Protocol
961 // instances first and then select one which support English language.
962 // Current implementation just pick the first instance.
963 //
964 Status = gBS->LocateProtocol (
965 &gEfiUnicodeCollation2ProtocolGuid,
966 NULL,
967 (VOID **) &mUnicodeCollation
968 );
969 return Status;
970 }
971
972 /**
973 Convert the input Unicode character to upper.
974
975 @param String Th Unicode character to be converted.
976
977 **/
978 VOID
979 IfrStrToUpper (
980 IN CHAR16 *String
981 )
982 {
983 while (*String != 0) {
984 if ((*String >= 'a') && (*String <= 'z')) {
985 *String = (UINT16) ((*String) & ((UINT16) ~0x20));
986 }
987 String++;
988 }
989 }
990
991
992 /**
993 Evaluate opcode EFI_IFR_TO_STRING.
994
995 @param FormSet Formset which contains this opcode.
996 @param Format String format in EFI_IFR_TO_STRING.
997 @param Result Evaluation result for this opcode.
998
999 @retval EFI_SUCCESS Opcode evaluation success.
1000 @retval Other Opcode evaluation failed.
1001
1002 **/
1003 EFI_STATUS
1004 IfrToString (
1005 IN FORM_BROWSER_FORMSET *FormSet,
1006 IN UINT8 Format,
1007 OUT EFI_HII_VALUE *Result
1008 )
1009 {
1010 EFI_STATUS Status;
1011 EFI_HII_VALUE Value;
1012 CHAR16 *String;
1013 CHAR16 *PrintFormat;
1014 CHAR16 Buffer[MAXIMUM_VALUE_CHARACTERS];
1015 UINT8 *TmpBuf;
1016 UINTN BufferSize;
1017
1018 Status = PopExpression (&Value);
1019 if (EFI_ERROR (Status)) {
1020 return Status;
1021 }
1022
1023 switch (Value.Type) {
1024 case EFI_IFR_TYPE_NUM_SIZE_8:
1025 case EFI_IFR_TYPE_NUM_SIZE_16:
1026 case EFI_IFR_TYPE_NUM_SIZE_32:
1027 case EFI_IFR_TYPE_NUM_SIZE_64:
1028 BufferSize = MAXIMUM_VALUE_CHARACTERS * sizeof (CHAR16);
1029 switch (Format) {
1030 case EFI_IFR_STRING_UNSIGNED_DEC:
1031 case EFI_IFR_STRING_SIGNED_DEC:
1032 PrintFormat = L"%ld";
1033 break;
1034
1035 case EFI_IFR_STRING_LOWERCASE_HEX:
1036 PrintFormat = L"%lx";
1037 break;
1038
1039 case EFI_IFR_STRING_UPPERCASE_HEX:
1040 PrintFormat = L"%lX";
1041 break;
1042
1043 default:
1044 Result->Type = EFI_IFR_TYPE_UNDEFINED;
1045 return EFI_SUCCESS;
1046 }
1047 UnicodeSPrint (Buffer, BufferSize, PrintFormat, Value.Value.u64);
1048 String = Buffer;
1049 break;
1050
1051 case EFI_IFR_TYPE_STRING:
1052 CopyMem (Result, &Value, sizeof (EFI_HII_VALUE));
1053 return EFI_SUCCESS;
1054
1055 case EFI_IFR_TYPE_BOOLEAN:
1056 String = (Value.Value.b) ? L"True" : L"False";
1057 break;
1058
1059 case EFI_IFR_TYPE_BUFFER:
1060 //
1061 // + 3 is base on the unicode format, the length may be odd number,
1062 // so need 1 byte to align, also need 2 bytes for L'\0'.
1063 //
1064 TmpBuf = AllocateZeroPool (Value.BufferLen + 3);
1065 ASSERT (TmpBuf != NULL);
1066 if (Format == EFI_IFR_STRING_ASCII) {
1067 CopyMem (TmpBuf, Value.Buffer, Value.BufferLen);
1068 PrintFormat = L"%a";
1069 } else {
1070 // Format == EFI_IFR_STRING_UNICODE
1071 CopyMem (TmpBuf, Value.Buffer, Value.BufferLen * sizeof (CHAR16));
1072 PrintFormat = L"%s";
1073 }
1074 UnicodeSPrint (Buffer, sizeof (Buffer), PrintFormat, Value.Buffer);
1075 String = Buffer;
1076 FreePool (TmpBuf);
1077 FreePool (Value.Buffer);
1078 break;
1079
1080 default:
1081 Result->Type = EFI_IFR_TYPE_UNDEFINED;
1082 return EFI_SUCCESS;
1083 }
1084
1085 Result->Type = EFI_IFR_TYPE_STRING;
1086 Result->Value.string = NewString (String, FormSet->HiiHandle);
1087 return EFI_SUCCESS;
1088 }
1089
1090
1091 /**
1092 Evaluate opcode EFI_IFR_TO_UINT.
1093
1094 @param FormSet Formset which contains this opcode.
1095 @param Result Evaluation result for this opcode.
1096
1097 @retval EFI_SUCCESS Opcode evaluation success.
1098 @retval Other Opcode evaluation failed.
1099
1100 **/
1101 EFI_STATUS
1102 IfrToUint (
1103 IN FORM_BROWSER_FORMSET *FormSet,
1104 OUT EFI_HII_VALUE *Result
1105 )
1106 {
1107 EFI_STATUS Status;
1108 EFI_HII_VALUE Value;
1109 CHAR16 *String;
1110 CHAR16 *StringPtr;
1111
1112 Status = PopExpression (&Value);
1113 if (EFI_ERROR (Status)) {
1114 return Status;
1115 }
1116
1117 if (Value.Type >= EFI_IFR_TYPE_OTHER && Value.Type != EFI_IFR_TYPE_BUFFER) {
1118 Result->Type = EFI_IFR_TYPE_UNDEFINED;
1119 return EFI_SUCCESS;
1120 }
1121
1122 Status = EFI_SUCCESS;
1123 if (Value.Type == EFI_IFR_TYPE_STRING) {
1124 String = GetToken (Value.Value.string, FormSet->HiiHandle);
1125 if (String == NULL) {
1126 return EFI_NOT_FOUND;
1127 }
1128
1129 IfrStrToUpper (String);
1130 StringPtr = StrStr (String, L"0X");
1131 if (StringPtr != NULL) {
1132 //
1133 // Hex string
1134 //
1135 Result->Value.u64 = StrHexToUint64 (String);
1136 } else {
1137 //
1138 // decimal string
1139 //
1140 Result->Value.u64 = StrDecimalToUint64 (String);
1141 }
1142 FreePool (String);
1143 } else if (Value.Type == EFI_IFR_TYPE_BUFFER) {
1144 if (Value.BufferLen > 8) {
1145 FreePool (Value.Buffer);
1146 Result->Type = EFI_IFR_TYPE_UNDEFINED;
1147 return EFI_SUCCESS;
1148 }
1149 Result->Value.u64 = *(UINT64*) Value.Buffer;
1150 FreePool (Value.Buffer);
1151 } else {
1152 CopyMem (Result, &Value, sizeof (EFI_HII_VALUE));
1153 }
1154
1155 Result->Type = EFI_IFR_TYPE_NUM_SIZE_64;
1156 return Status;
1157 }
1158
1159
1160 /**
1161 Evaluate opcode EFI_IFR_CATENATE.
1162
1163 @param FormSet Formset which contains this opcode.
1164 @param Result Evaluation result for this opcode.
1165
1166 @retval EFI_SUCCESS Opcode evaluation success.
1167 @retval Other Opcode evaluation failed.
1168
1169 **/
1170 EFI_STATUS
1171 IfrCatenate (
1172 IN FORM_BROWSER_FORMSET *FormSet,
1173 OUT EFI_HII_VALUE *Result
1174 )
1175 {
1176 EFI_STATUS Status;
1177 EFI_HII_VALUE Value[2];
1178 CHAR16 *String[2];
1179 UINTN Index;
1180 CHAR16 *StringPtr;
1181 UINTN Size;
1182
1183 //
1184 // String[0] - The second string
1185 // String[1] - The first string
1186 //
1187 String[0] = NULL;
1188 String[1] = NULL;
1189 StringPtr = NULL;
1190 Status = EFI_SUCCESS;
1191 ZeroMem (Value, sizeof (Value));
1192
1193 Status = PopExpression (&Value[0]);
1194 if (EFI_ERROR (Status)) {
1195 goto Done;
1196 }
1197
1198 Status = PopExpression (&Value[1]);
1199 if (EFI_ERROR (Status)) {
1200 goto Done;
1201 }
1202
1203 for (Index = 0; Index < 2; Index++) {
1204 if (Value[Index].Type != EFI_IFR_TYPE_STRING && Value[Index].Type != EFI_IFR_TYPE_BUFFER) {
1205 Result->Type = EFI_IFR_TYPE_UNDEFINED;
1206 Status = EFI_SUCCESS;
1207 goto Done;
1208 }
1209
1210 if (Value[Index].Type == EFI_IFR_TYPE_STRING) {
1211 String[Index] = GetToken (Value[Index].Value.string, FormSet->HiiHandle);
1212 if (String[Index] == NULL) {
1213 Status = EFI_NOT_FOUND;
1214 goto Done;
1215 }
1216 }
1217 }
1218
1219 if (Value[0].Type == EFI_IFR_TYPE_STRING) {
1220 Size = StrSize (String[0]);
1221 StringPtr= AllocatePool (StrSize (String[1]) + Size);
1222 ASSERT (StringPtr != NULL);
1223 StrCpy (StringPtr, String[1]);
1224 StrCat (StringPtr, String[0]);
1225
1226 Result->Type = EFI_IFR_TYPE_STRING;
1227 Result->Value.string = NewString (StringPtr, FormSet->HiiHandle);
1228 } else {
1229 Result->Type = EFI_IFR_TYPE_BUFFER;
1230 Result->BufferLen = (UINT16) (Value[0].BufferLen + Value[1].BufferLen);
1231
1232 Result->Buffer = AllocateZeroPool (Result->BufferLen);
1233 ASSERT (Result->Buffer != NULL);
1234
1235 CopyMem (Result->Buffer, Value[0].Buffer, Value[0].BufferLen);
1236 CopyMem (&Result->Buffer[Value[0].BufferLen], Value[1].Buffer, Value[1].BufferLen);
1237 }
1238 Done:
1239 if (Value[0].Buffer != NULL) {
1240 FreePool (Value[0].Buffer);
1241 }
1242 if (Value[1].Buffer != NULL) {
1243 FreePool (Value[1].Buffer);
1244 }
1245 if (String[0] != NULL) {
1246 FreePool (String[0]);
1247 }
1248 if (String[1] != NULL) {
1249 FreePool (String[1]);
1250 }
1251 if (StringPtr != NULL) {
1252 FreePool (StringPtr);
1253 }
1254
1255 return Status;
1256 }
1257
1258
1259 /**
1260 Evaluate opcode EFI_IFR_MATCH.
1261
1262 @param FormSet Formset which contains this opcode.
1263 @param Result Evaluation result for this opcode.
1264
1265 @retval EFI_SUCCESS Opcode evaluation success.
1266 @retval Other Opcode evaluation failed.
1267
1268 **/
1269 EFI_STATUS
1270 IfrMatch (
1271 IN FORM_BROWSER_FORMSET *FormSet,
1272 OUT EFI_HII_VALUE *Result
1273 )
1274 {
1275 EFI_STATUS Status;
1276 EFI_HII_VALUE Value[2];
1277 CHAR16 *String[2];
1278 UINTN Index;
1279
1280 //
1281 // String[0] - The string to search
1282 // String[1] - pattern
1283 //
1284 String[0] = NULL;
1285 String[1] = NULL;
1286 Status = EFI_SUCCESS;
1287 ZeroMem (Value, sizeof (Value));
1288
1289 Status = PopExpression (&Value[0]);
1290 if (EFI_ERROR (Status)) {
1291 goto Done;
1292 }
1293
1294 Status = PopExpression (&Value[1]);
1295 if (EFI_ERROR (Status)) {
1296 goto Done;
1297 }
1298
1299 for (Index = 0; Index < 2; Index++) {
1300 if (Value[Index].Type != EFI_IFR_TYPE_STRING) {
1301 Result->Type = EFI_IFR_TYPE_UNDEFINED;
1302 Status = EFI_SUCCESS;
1303 goto Done;
1304 }
1305
1306 String[Index] = GetToken (Value[Index].Value.string, FormSet->HiiHandle);
1307 if (String [Index] == NULL) {
1308 Status = EFI_NOT_FOUND;
1309 goto Done;
1310 }
1311 }
1312
1313 Result->Type = EFI_IFR_TYPE_BOOLEAN;
1314 Result->Value.b = mUnicodeCollation->MetaiMatch (mUnicodeCollation, String[0], String[1]);
1315
1316 Done:
1317 if (String[0] != NULL) {
1318 FreePool (String[0]);
1319 }
1320 if (String[1] != NULL) {
1321 FreePool (String[1]);
1322 }
1323
1324 return Status;
1325 }
1326
1327
1328 /**
1329 Evaluate opcode EFI_IFR_FIND.
1330
1331 @param FormSet Formset which contains this opcode.
1332 @param Format Case sensitive or insensitive.
1333 @param Result Evaluation result for this opcode.
1334
1335 @retval EFI_SUCCESS Opcode evaluation success.
1336 @retval Other Opcode evaluation failed.
1337
1338 **/
1339 EFI_STATUS
1340 IfrFind (
1341 IN FORM_BROWSER_FORMSET *FormSet,
1342 IN UINT8 Format,
1343 OUT EFI_HII_VALUE *Result
1344 )
1345 {
1346 EFI_STATUS Status;
1347 EFI_HII_VALUE Value[3];
1348 CHAR16 *String[2];
1349 UINTN Base;
1350 CHAR16 *StringPtr;
1351 UINTN Index;
1352
1353 ZeroMem (Value, sizeof (Value));
1354
1355 if (Format > EFI_IFR_FF_CASE_INSENSITIVE) {
1356 return EFI_INVALID_PARAMETER;
1357 }
1358
1359 Status = PopExpression (&Value[0]);
1360 if (EFI_ERROR (Status)) {
1361 return Status;
1362 }
1363
1364 Status = PopExpression (&Value[1]);
1365 if (EFI_ERROR (Status)) {
1366 return Status;
1367 }
1368
1369 Status = PopExpression (&Value[2]);
1370 if (EFI_ERROR (Status)) {
1371 return Status;
1372 }
1373
1374 if (Value[0].Type > EFI_IFR_TYPE_NUM_SIZE_64) {
1375 Result->Type = EFI_IFR_TYPE_UNDEFINED;
1376 return EFI_SUCCESS;
1377 }
1378 Base = (UINTN) Value[0].Value.u64;
1379
1380 //
1381 // String[0] - sub-string
1382 // String[1] - The string to search
1383 //
1384 String[0] = NULL;
1385 String[1] = NULL;
1386 for (Index = 0; Index < 2; Index++) {
1387 if (Value[Index + 1].Type != EFI_IFR_TYPE_STRING) {
1388 Result->Type = EFI_IFR_TYPE_UNDEFINED;
1389 Status = EFI_SUCCESS;
1390 goto Done;
1391 }
1392
1393 String[Index] = GetToken (Value[Index + 1].Value.string, FormSet->HiiHandle);
1394 if (String[Index] == NULL) {
1395 Status = EFI_NOT_FOUND;
1396 goto Done;
1397 }
1398
1399 if (Format == EFI_IFR_FF_CASE_INSENSITIVE) {
1400 //
1401 // Case insensitive, convert both string to upper case
1402 //
1403 IfrStrToUpper (String[Index]);
1404 }
1405 }
1406
1407 Result->Type = EFI_IFR_TYPE_NUM_SIZE_64;
1408 if (Base >= StrLen (String[1])) {
1409 Result->Value.u64 = 0xFFFFFFFFFFFFFFFFULL;
1410 } else {
1411 StringPtr = StrStr (String[1] + Base, String[0]);
1412 Result->Value.u64 = (StringPtr == NULL) ? 0xFFFFFFFFFFFFFFFFULL : (StringPtr - String[1]);
1413 }
1414
1415 Done:
1416 if (String[0] != NULL) {
1417 FreePool (String[0]);
1418 }
1419 if (String[1] != NULL) {
1420 FreePool (String[1]);
1421 }
1422
1423 return Status;
1424 }
1425
1426
1427 /**
1428 Evaluate opcode EFI_IFR_MID.
1429
1430 @param FormSet Formset which contains this opcode.
1431 @param Result Evaluation result for this opcode.
1432
1433 @retval EFI_SUCCESS Opcode evaluation success.
1434 @retval Other Opcode evaluation failed.
1435
1436 **/
1437 EFI_STATUS
1438 IfrMid (
1439 IN FORM_BROWSER_FORMSET *FormSet,
1440 OUT EFI_HII_VALUE *Result
1441 )
1442 {
1443 EFI_STATUS Status;
1444 EFI_HII_VALUE Value[3];
1445 CHAR16 *String;
1446 UINTN Base;
1447 UINTN Length;
1448 CHAR16 *SubString;
1449 UINT8 *Buffer;
1450 UINT16 BufferLen;
1451
1452 ZeroMem (Value, sizeof (Value));
1453
1454 Status = PopExpression (&Value[0]);
1455 if (EFI_ERROR (Status)) {
1456 return Status;
1457 }
1458
1459 Status = PopExpression (&Value[1]);
1460 if (EFI_ERROR (Status)) {
1461 return Status;
1462 }
1463
1464 Status = PopExpression (&Value[2]);
1465 if (EFI_ERROR (Status)) {
1466 return Status;
1467 }
1468
1469 if (Value[0].Type > EFI_IFR_TYPE_NUM_SIZE_64) {
1470 Result->Type = EFI_IFR_TYPE_UNDEFINED;
1471 return EFI_SUCCESS;
1472 }
1473 Length = (UINTN) Value[0].Value.u64;
1474
1475 if (Value[1].Type > EFI_IFR_TYPE_NUM_SIZE_64) {
1476 Result->Type = EFI_IFR_TYPE_UNDEFINED;
1477 return EFI_SUCCESS;
1478 }
1479 Base = (UINTN) Value[1].Value.u64;
1480
1481 if (Value[2].Type != EFI_IFR_TYPE_STRING && Value[2].Type != EFI_IFR_TYPE_BUFFER) {
1482 Result->Type = EFI_IFR_TYPE_UNDEFINED;
1483 return EFI_SUCCESS;
1484 }
1485 if (Value[2].Type == EFI_IFR_TYPE_STRING) {
1486 String = GetToken (Value[2].Value.string, FormSet->HiiHandle);
1487 if (String == NULL) {
1488 return EFI_NOT_FOUND;
1489 }
1490
1491 if (Length == 0 || Base >= StrLen (String)) {
1492 SubString = gEmptyString;
1493 } else {
1494 SubString = String + Base;
1495 if ((Base + Length) < StrLen (String)) {
1496 SubString[Length] = L'\0';
1497 }
1498 }
1499
1500 Result->Type = EFI_IFR_TYPE_STRING;
1501 Result->Value.string = NewString (SubString, FormSet->HiiHandle);
1502
1503 FreePool (String);
1504 } else {
1505 Buffer = Value[2].Buffer;
1506 BufferLen = Value[2].BufferLen;
1507
1508 Result->Type = EFI_IFR_TYPE_BUFFER;
1509 if (Length == 0 || Base >= BufferLen) {
1510 Result->BufferLen = 0;
1511 Result->Buffer = NULL;
1512 } else {
1513 Result->BufferLen = (UINT16)((BufferLen - Base) < Length ? (BufferLen - Base) : Length);
1514 Result->Buffer = AllocateZeroPool (Result->BufferLen);
1515 ASSERT (Result->Buffer != NULL);
1516 CopyMem (Result->Buffer, &Value[2].Buffer[Base], Result->BufferLen);
1517 }
1518
1519 FreePool (Value[2].Buffer);
1520 }
1521
1522 return Status;
1523 }
1524
1525
1526 /**
1527 Evaluate opcode EFI_IFR_TOKEN.
1528
1529 @param FormSet Formset which contains this opcode.
1530 @param Result Evaluation result for this opcode.
1531
1532 @retval EFI_SUCCESS Opcode evaluation success.
1533 @retval Other Opcode evaluation failed.
1534
1535 **/
1536 EFI_STATUS
1537 IfrToken (
1538 IN FORM_BROWSER_FORMSET *FormSet,
1539 OUT EFI_HII_VALUE *Result
1540 )
1541 {
1542 EFI_STATUS Status;
1543 EFI_HII_VALUE Value[3];
1544 CHAR16 *String[2];
1545 UINTN Count;
1546 CHAR16 *Delimiter;
1547 CHAR16 *SubString;
1548 CHAR16 *StringPtr;
1549 UINTN Index;
1550
1551 ZeroMem (Value, sizeof (Value));
1552
1553 Status = PopExpression (&Value[0]);
1554 if (EFI_ERROR (Status)) {
1555 return Status;
1556 }
1557
1558 Status = PopExpression (&Value[1]);
1559 if (EFI_ERROR (Status)) {
1560 return Status;
1561 }
1562
1563 Status = PopExpression (&Value[2]);
1564 if (EFI_ERROR (Status)) {
1565 return Status;
1566 }
1567
1568 if (Value[0].Type > EFI_IFR_TYPE_NUM_SIZE_64) {
1569 Result->Type = EFI_IFR_TYPE_UNDEFINED;
1570 return EFI_SUCCESS;
1571 }
1572 Count = (UINTN) Value[0].Value.u64;
1573
1574 //
1575 // String[0] - Delimiter
1576 // String[1] - The string to search
1577 //
1578 String[0] = NULL;
1579 String[1] = NULL;
1580 for (Index = 0; Index < 2; Index++) {
1581 if (Value[Index + 1].Type != EFI_IFR_TYPE_STRING) {
1582 Result->Type = EFI_IFR_TYPE_UNDEFINED;
1583 Status = EFI_SUCCESS;
1584 goto Done;
1585 }
1586
1587 String[Index] = GetToken (Value[Index + 1].Value.string, FormSet->HiiHandle);
1588 if (String[Index] == NULL) {
1589 Status = EFI_NOT_FOUND;
1590 goto Done;
1591 }
1592 }
1593
1594 Delimiter = String[0];
1595 SubString = String[1];
1596 while (Count > 0) {
1597 SubString = StrStr (SubString, Delimiter);
1598 if (SubString != NULL) {
1599 //
1600 // Skip over the delimiter
1601 //
1602 SubString = SubString + StrLen (Delimiter);
1603 } else {
1604 break;
1605 }
1606 Count--;
1607 }
1608
1609 if (SubString == NULL) {
1610 //
1611 // nth delimited sub-string not found, push an empty string
1612 //
1613 SubString = gEmptyString;
1614 } else {
1615 //
1616 // Put a NULL terminator for nth delimited sub-string
1617 //
1618 StringPtr = StrStr (SubString, Delimiter);
1619 if (StringPtr != NULL) {
1620 *StringPtr = L'\0';
1621 }
1622 }
1623
1624 Result->Type = EFI_IFR_TYPE_STRING;
1625 Result->Value.string = NewString (SubString, FormSet->HiiHandle);
1626
1627 Done:
1628 if (String[0] != NULL) {
1629 FreePool (String[0]);
1630 }
1631 if (String[1] != NULL) {
1632 FreePool (String[1]);
1633 }
1634
1635 return Status;
1636 }
1637
1638
1639 /**
1640 Evaluate opcode EFI_IFR_SPAN.
1641
1642 @param FormSet Formset which contains this opcode.
1643 @param Flags FIRST_MATCHING or FIRST_NON_MATCHING.
1644 @param Result Evaluation result for this opcode.
1645
1646 @retval EFI_SUCCESS Opcode evaluation success.
1647 @retval Other Opcode evaluation failed.
1648
1649 **/
1650 EFI_STATUS
1651 IfrSpan (
1652 IN FORM_BROWSER_FORMSET *FormSet,
1653 IN UINT8 Flags,
1654 OUT EFI_HII_VALUE *Result
1655 )
1656 {
1657 EFI_STATUS Status;
1658 EFI_HII_VALUE Value[3];
1659 CHAR16 *String[2];
1660 CHAR16 *Charset;
1661 UINTN Base;
1662 UINTN Index;
1663 CHAR16 *StringPtr;
1664 BOOLEAN Found;
1665
1666 ZeroMem (Value, sizeof (Value));
1667
1668 Status = PopExpression (&Value[0]);
1669 if (EFI_ERROR (Status)) {
1670 return Status;
1671 }
1672
1673 Status = PopExpression (&Value[1]);
1674 if (EFI_ERROR (Status)) {
1675 return Status;
1676 }
1677
1678 Status = PopExpression (&Value[2]);
1679 if (EFI_ERROR (Status)) {
1680 return Status;
1681 }
1682
1683 if (Value[0].Type > EFI_IFR_TYPE_NUM_SIZE_64) {
1684 Result->Type = EFI_IFR_TYPE_UNDEFINED;
1685 return EFI_SUCCESS;
1686 }
1687 Base = (UINTN) Value[0].Value.u64;
1688
1689 //
1690 // String[0] - Charset
1691 // String[1] - The string to search
1692 //
1693 String[0] = NULL;
1694 String[1] = NULL;
1695 for (Index = 0; Index < 2; Index++) {
1696 if (Value[Index + 1].Type != EFI_IFR_TYPE_STRING) {
1697 Result->Type = EFI_IFR_TYPE_UNDEFINED;
1698 Status = EFI_SUCCESS;
1699 goto Done;
1700 }
1701
1702 String[Index] = GetToken (Value[Index + 1].Value.string, FormSet->HiiHandle);
1703 if (String [Index] == NULL) {
1704 Status = EFI_NOT_FOUND;
1705 goto Done;
1706 }
1707 }
1708
1709 if (Base >= StrLen (String[1])) {
1710 Result->Type = EFI_IFR_TYPE_UNDEFINED;
1711 Status = EFI_SUCCESS;
1712 goto Done;
1713 }
1714
1715 Found = FALSE;
1716 StringPtr = String[1] + Base;
1717 Charset = String[0];
1718 while (*StringPtr != 0 && !Found) {
1719 Index = 0;
1720 while (Charset[Index] != 0) {
1721 if (*StringPtr >= Charset[Index] && *StringPtr <= Charset[Index + 1]) {
1722 if (Flags == EFI_IFR_FLAGS_FIRST_MATCHING) {
1723 Found = TRUE;
1724 break;
1725 }
1726 } else {
1727 if (Flags == EFI_IFR_FLAGS_FIRST_NON_MATCHING) {
1728 Found = TRUE;
1729 break;
1730 }
1731 }
1732 //
1733 // Skip characters pair representing low-end of a range and high-end of a range
1734 //
1735 Index += 2;
1736 }
1737
1738 if (!Found) {
1739 StringPtr++;
1740 }
1741 }
1742
1743 Result->Type = EFI_IFR_TYPE_NUM_SIZE_64;
1744 Result->Value.u64 = StringPtr - String[1];
1745
1746 Done:
1747 if (String[0] != NULL) {
1748 FreePool (String[0]);
1749 }
1750 if (String[1] != NULL) {
1751 FreePool (String[1]);
1752 }
1753
1754 return Status;
1755 }
1756
1757
1758 /**
1759 Zero extend integer/boolean/date/time to UINT64 for comparing.
1760
1761 @param Value HII Value to be converted.
1762
1763 **/
1764 VOID
1765 ExtendValueToU64 (
1766 IN EFI_HII_VALUE *Value
1767 )
1768 {
1769 UINT64 Temp;
1770
1771 Temp = 0;
1772 switch (Value->Type) {
1773 case EFI_IFR_TYPE_NUM_SIZE_8:
1774 Temp = Value->Value.u8;
1775 break;
1776
1777 case EFI_IFR_TYPE_NUM_SIZE_16:
1778 Temp = Value->Value.u16;
1779 break;
1780
1781 case EFI_IFR_TYPE_NUM_SIZE_32:
1782 Temp = Value->Value.u32;
1783 break;
1784
1785 case EFI_IFR_TYPE_BOOLEAN:
1786 Temp = Value->Value.b;
1787 break;
1788
1789 case EFI_IFR_TYPE_TIME:
1790 Temp = Value->Value.u32 & 0xffffff;
1791 break;
1792
1793 case EFI_IFR_TYPE_DATE:
1794 Temp = Value->Value.u32;
1795 break;
1796
1797 default:
1798 return;
1799 }
1800
1801 Value->Value.u64 = Temp;
1802 }
1803
1804
1805 /**
1806 Compare two Hii value.
1807
1808 @param Value1 Expression value to compare on left-hand.
1809 @param Value2 Expression value to compare on right-hand.
1810 @param Result Return value after compare.
1811 retval 0 Two operators equal.
1812 return Positive value if Value1 is greater than Value2.
1813 retval Negative value if Value1 is less than Value2.
1814 @param HiiHandle Only required for string compare.
1815
1816 @retval other Could not perform compare on two values.
1817 @retval EFI_SUCCESS Compare the value success.
1818
1819 **/
1820 EFI_STATUS
1821 CompareHiiValue (
1822 IN EFI_HII_VALUE *Value1,
1823 IN EFI_HII_VALUE *Value2,
1824 OUT INTN *Result,
1825 IN EFI_HII_HANDLE HiiHandle OPTIONAL
1826 )
1827 {
1828 INT64 Temp64;
1829 CHAR16 *Str1;
1830 CHAR16 *Str2;
1831 UINTN Len;
1832
1833 if (Value1->Type >= EFI_IFR_TYPE_OTHER || Value2->Type >= EFI_IFR_TYPE_OTHER ) {
1834 if (Value1->Type != EFI_IFR_TYPE_BUFFER && Value2->Type != EFI_IFR_TYPE_BUFFER) {
1835 return EFI_UNSUPPORTED;
1836 }
1837 }
1838
1839 if (Value1->Type == EFI_IFR_TYPE_STRING || Value2->Type == EFI_IFR_TYPE_STRING ) {
1840 if (Value1->Type != Value2->Type) {
1841 //
1842 // Both Operator should be type of String
1843 //
1844 return EFI_UNSUPPORTED;
1845 }
1846
1847 if (Value1->Value.string == 0 || Value2->Value.string == 0) {
1848 //
1849 // StringId 0 is reserved
1850 //
1851 return EFI_INVALID_PARAMETER;
1852 }
1853
1854 if (Value1->Value.string == Value2->Value.string) {
1855 *Result = 0;
1856 return EFI_SUCCESS;
1857 }
1858
1859 Str1 = GetToken (Value1->Value.string, HiiHandle);
1860 if (Str1 == NULL) {
1861 //
1862 // String not found
1863 //
1864 return EFI_NOT_FOUND;
1865 }
1866
1867 Str2 = GetToken (Value2->Value.string, HiiHandle);
1868 if (Str2 == NULL) {
1869 FreePool (Str1);
1870 return EFI_NOT_FOUND;
1871 }
1872
1873 *Result = StrCmp (Str1, Str2);
1874
1875 FreePool (Str1);
1876 FreePool (Str2);
1877
1878 return EFI_SUCCESS;
1879 }
1880
1881 if (Value1->Type == EFI_IFR_TYPE_BUFFER || Value2->Type == EFI_IFR_TYPE_BUFFER ) {
1882 if (Value1->Type != Value2->Type) {
1883 //
1884 // Both Operator should be type of Buffer.
1885 //
1886 return EFI_UNSUPPORTED;
1887 }
1888 Len = Value1->BufferLen > Value2->BufferLen ? Value2->BufferLen : Value1->BufferLen;
1889 *Result = CompareMem (Value1->Buffer, Value2->Buffer, Len);
1890 if ((*Result == 0) && (Value1->BufferLen != Value2->BufferLen))
1891 {
1892 //
1893 // In this case, means base on samll number buffer, the data is same
1894 // So which value has more data, which value is bigger.
1895 //
1896 *Result = Value1->BufferLen > Value2->BufferLen ? 1 : -1;
1897 }
1898 return EFI_SUCCESS;
1899 }
1900
1901 //
1902 // Take remain types(integer, boolean, date/time) as integer
1903 //
1904 Temp64 = (INT64) (Value1->Value.u64 - Value2->Value.u64);
1905 if (Temp64 > 0) {
1906 *Result = 1;
1907 } else if (Temp64 < 0) {
1908 *Result = -1;
1909 } else {
1910 *Result = 0;
1911 }
1912
1913 return EFI_SUCCESS;
1914 }
1915
1916 /**
1917 Check if current user has the privilege specified by the permissions GUID.
1918
1919 @param[in] Guid A GUID specifying setup access permissions.
1920
1921 @retval TRUE Current user has the privilege.
1922 @retval FALSE Current user does not have the privilege.
1923 **/
1924 BOOLEAN
1925 CheckUserPrivilege (
1926 IN EFI_GUID *Guid
1927 )
1928 {
1929 EFI_STATUS Status;
1930 EFI_USER_PROFILE_HANDLE UserProfileHandle;
1931 EFI_USER_INFO_HANDLE UserInfoHandle;
1932 EFI_USER_INFO *UserInfo;
1933 EFI_GUID *UserPermissionsGuid;
1934 UINTN UserInfoSize;
1935 UINTN AccessControlDataSize;
1936 EFI_USER_INFO_ACCESS_CONTROL *AccessControl;
1937 UINTN RemainSize;
1938
1939 if (mUserManager == NULL) {
1940 Status = gBS->LocateProtocol (
1941 &gEfiUserManagerProtocolGuid,
1942 NULL,
1943 (VOID **) &mUserManager
1944 );
1945 if (EFI_ERROR (Status)) {
1946 ///
1947 /// If the system does not support user management, then it is assumed that
1948 /// all users have admin privilege and evaluation of each EFI_IFR_SECURITY
1949 /// op-code is always TRUE.
1950 ///
1951 return TRUE;
1952 }
1953 }
1954
1955 Status = mUserManager->Current (mUserManager, &UserProfileHandle);
1956 ASSERT_EFI_ERROR (Status);
1957
1958 ///
1959 /// Enumerate all user information of the current user profile
1960 /// to look for any EFI_USER_INFO_ACCESS_SETUP record.
1961 ///
1962
1963 for (UserInfoHandle = NULL;;) {
1964 Status = mUserManager->GetNextInfo (mUserManager, UserProfileHandle, &UserInfoHandle);
1965 if (EFI_ERROR (Status)) {
1966 break;
1967 }
1968
1969 UserInfoSize = 0;
1970 Status = mUserManager->GetInfo (mUserManager, UserProfileHandle, UserInfoHandle, NULL, &UserInfoSize);
1971 if (Status != EFI_BUFFER_TOO_SMALL) {
1972 continue;
1973 }
1974
1975 UserInfo = (EFI_USER_INFO *) AllocatePool (UserInfoSize);
1976 if (UserInfo == NULL) {
1977 break;
1978 }
1979
1980 Status = mUserManager->GetInfo (mUserManager, UserProfileHandle, UserInfoHandle, UserInfo, &UserInfoSize);
1981 if (EFI_ERROR (Status) ||
1982 UserInfo->InfoType != EFI_USER_INFO_ACCESS_POLICY_RECORD ||
1983 UserInfo->InfoSize <= sizeof (EFI_USER_INFO)) {
1984 FreePool (UserInfo);
1985 continue;
1986 }
1987
1988 RemainSize = UserInfo->InfoSize - sizeof (EFI_USER_INFO);
1989 AccessControl = (EFI_USER_INFO_ACCESS_CONTROL *)(UserInfo + 1);
1990 while (RemainSize >= sizeof (EFI_USER_INFO_ACCESS_CONTROL)) {
1991 if (RemainSize < AccessControl->Size || AccessControl->Size < sizeof (EFI_USER_INFO_ACCESS_CONTROL)) {
1992 break;
1993 }
1994 if (AccessControl->Type == EFI_USER_INFO_ACCESS_SETUP) {
1995 ///
1996 /// Check if current user has the privilege specified by the permissions GUID.
1997 ///
1998
1999 UserPermissionsGuid = (EFI_GUID *)(AccessControl + 1);
2000 AccessControlDataSize = AccessControl->Size - sizeof (EFI_USER_INFO_ACCESS_CONTROL);
2001 while (AccessControlDataSize >= sizeof (EFI_GUID)) {
2002 if (CompareGuid (Guid, UserPermissionsGuid)) {
2003 FreePool (UserInfo);
2004 return TRUE;
2005 }
2006 UserPermissionsGuid++;
2007 AccessControlDataSize -= sizeof (EFI_GUID);
2008 }
2009 }
2010 RemainSize -= AccessControl->Size;
2011 AccessControl = (EFI_USER_INFO_ACCESS_CONTROL *)((UINT8 *)AccessControl + AccessControl->Size);
2012 }
2013
2014 FreePool (UserInfo);
2015 }
2016 return FALSE;
2017 }
2018
2019 /**
2020 Get question value from the predefined formset.
2021
2022 @param DevicePath The driver's device path which produece the formset data.
2023 @param InputHiiHandle The hii handle associate with the formset data.
2024 @param FormSetGuid The formset guid which include the question.
2025 @param QuestionId The question id which need to get value from.
2026 @param Value The return data about question's value.
2027
2028 @retval TRUE Get the question value success.
2029 @retval FALSE Get the question value failed.
2030 **/
2031 BOOLEAN
2032 GetQuestionValueFromForm (
2033 IN EFI_DEVICE_PATH_PROTOCOL *DevicePath,
2034 IN EFI_HII_HANDLE InputHiiHandle,
2035 IN EFI_GUID *FormSetGuid,
2036 IN EFI_QUESTION_ID QuestionId,
2037 OUT EFI_HII_VALUE *Value
2038 )
2039 {
2040 EFI_STATUS Status;
2041 EFI_HANDLE DriverHandle;
2042 EFI_HANDLE Handle;
2043 EFI_HII_HANDLE *HiiHandles;
2044 EFI_HII_HANDLE HiiHandle;
2045 UINTN Index;
2046 FORM_BROWSER_STATEMENT *Question;
2047 FORM_BROWSER_FORMSET *FormSet;
2048 FORM_BROWSER_FORM *Form;
2049 BOOLEAN GetTheVal;
2050 LIST_ENTRY *Link;
2051
2052 //
2053 // The input parameter DevicePath or InputHiiHandle must have one valid input.
2054 //
2055 ASSERT ((DevicePath != NULL && InputHiiHandle == NULL) ||
2056 (DevicePath == NULL && InputHiiHandle != NULL) );
2057
2058 GetTheVal = TRUE;
2059 DriverHandle = NULL;
2060 HiiHandle = NULL;
2061 Question = NULL;
2062 Form = NULL;
2063
2064 //
2065 // Get HiiHandle.
2066 //
2067 if (DevicePath != NULL) {
2068 //
2069 // 1. Get Driver handle.
2070 //
2071 Status = gBS->LocateDevicePath (
2072 &gEfiDevicePathProtocolGuid,
2073 &DevicePath,
2074 &DriverHandle
2075 );
2076 if (EFI_ERROR (Status) || (DriverHandle == NULL)) {
2077 return FALSE;
2078 }
2079
2080 //
2081 // 2. Get Hii handle
2082 //
2083 HiiHandles = HiiGetHiiHandles (NULL);
2084 if (HiiHandles == NULL) {
2085 return FALSE;
2086 }
2087
2088 for (Index = 0; HiiHandles[Index] != NULL; Index++) {
2089 Status = mHiiDatabase->GetPackageListHandle (
2090 mHiiDatabase,
2091 HiiHandles[Index],
2092 &Handle
2093 );
2094 if (!EFI_ERROR (Status) && (Handle == DriverHandle)) {
2095 HiiHandle = HiiHandles[Index];
2096 break;
2097 }
2098 }
2099 FreePool (HiiHandles);
2100 } else {
2101 HiiHandle = InputHiiHandle;
2102 }
2103 ASSERT (HiiHandle != NULL);
2104
2105 //
2106 // Get the formset data include this question.
2107 //
2108 FormSet = AllocateZeroPool (sizeof (FORM_BROWSER_FORMSET));
2109 ASSERT (FormSet != NULL);
2110 Status = InitializeFormSet(HiiHandle, FormSetGuid, FormSet, FALSE);
2111 if (EFI_ERROR (Status)) {
2112 GetTheVal = FALSE;
2113 goto Done;
2114 }
2115
2116 //
2117 // Base on the Question Id to get the question info.
2118 //
2119 Question = IdToQuestion(FormSet, NULL, QuestionId);
2120 if (Question == NULL) {
2121 GetTheVal = FALSE;
2122 goto Done;
2123 }
2124
2125 //
2126 // Search form in the formset scope
2127 //
2128 Link = GetFirstNode (&FormSet->FormListHead);
2129 while (!IsNull (&FormSet->FormListHead, Link)) {
2130 Form = FORM_BROWSER_FORM_FROM_LINK (Link);
2131
2132 Question = IdToQuestion2 (Form, QuestionId);
2133 if (Question != NULL) {
2134 break;
2135 }
2136
2137 Link = GetNextNode (&FormSet->FormListHead, Link);
2138 Form = NULL;
2139 }
2140 ASSERT (Form != NULL);
2141
2142 //
2143 // Get the question value.
2144 //
2145 Status = GetQuestionValue(FormSet, Form, Question, GetSetValueWithHiiDriver);
2146 if (EFI_ERROR (Status)) {
2147 GetTheVal = FALSE;
2148 goto Done;
2149 }
2150
2151 CopyMem (Value, &Question->HiiValue, sizeof (EFI_HII_VALUE));
2152
2153 Done:
2154 //
2155 // Clean the formset structure and restore the global parameter.
2156 //
2157 if (FormSet != NULL) {
2158 DestroyFormSet (FormSet);
2159 }
2160
2161 return GetTheVal;
2162 }
2163
2164 /**
2165 Evaluate the result of a HII expression.
2166
2167 If Expression is NULL, then ASSERT.
2168
2169 @param FormSet FormSet associated with this expression.
2170 @param Form Form associated with this expression.
2171 @param Expression Expression to be evaluated.
2172
2173 @retval EFI_SUCCESS The expression evaluated successfuly
2174 @retval EFI_NOT_FOUND The Question which referenced by a QuestionId
2175 could not be found.
2176 @retval EFI_OUT_OF_RESOURCES There is not enough system memory to grow the
2177 stack.
2178 @retval EFI_ACCESS_DENIED The pop operation underflowed the stack
2179 @retval EFI_INVALID_PARAMETER Syntax error with the Expression
2180
2181 **/
2182 EFI_STATUS
2183 EvaluateExpression (
2184 IN FORM_BROWSER_FORMSET *FormSet,
2185 IN FORM_BROWSER_FORM *Form,
2186 IN OUT FORM_EXPRESSION *Expression
2187 )
2188 {
2189 EFI_STATUS Status;
2190 LIST_ENTRY *Link;
2191 EXPRESSION_OPCODE *OpCode;
2192 FORM_BROWSER_STATEMENT *Question;
2193 FORM_BROWSER_STATEMENT *Question2;
2194 UINT16 Index;
2195 EFI_HII_VALUE Data1;
2196 EFI_HII_VALUE Data2;
2197 EFI_HII_VALUE Data3;
2198 FORM_EXPRESSION *RuleExpression;
2199 EFI_HII_VALUE *Value;
2200 INTN Result;
2201 CHAR16 *StrPtr;
2202 CHAR16 *NameValue;
2203 UINT32 TempValue;
2204 LIST_ENTRY *SubExpressionLink;
2205 FORM_EXPRESSION *SubExpression;
2206 UINTN StackOffset;
2207 UINTN TempLength;
2208 CHAR16 TempStr[5];
2209 UINT8 DigitUint8;
2210 UINT8 *TempBuffer;
2211 EFI_TIME EfiTime;
2212 EFI_HII_VALUE QuestionVal;
2213 EFI_DEVICE_PATH_PROTOCOL *DevicePath;
2214
2215 //
2216 // Save current stack offset.
2217 //
2218 StackOffset = SaveExpressionEvaluationStackOffset ();
2219
2220 ASSERT (Expression != NULL);
2221 Expression->Result.Type = EFI_IFR_TYPE_OTHER;
2222
2223 Link = GetFirstNode (&Expression->OpCodeListHead);
2224 while (!IsNull (&Expression->OpCodeListHead, Link)) {
2225 OpCode = EXPRESSION_OPCODE_FROM_LINK (Link);
2226
2227 Link = GetNextNode (&Expression->OpCodeListHead, Link);
2228
2229 ZeroMem (&Data1, sizeof (EFI_HII_VALUE));
2230 ZeroMem (&Data2, sizeof (EFI_HII_VALUE));
2231 ZeroMem (&Data3, sizeof (EFI_HII_VALUE));
2232
2233 Value = &Data3;
2234 Value->Type = EFI_IFR_TYPE_BOOLEAN;
2235 Status = EFI_SUCCESS;
2236
2237 switch (OpCode->Operand) {
2238 //
2239 // Built-in functions
2240 //
2241 case EFI_IFR_EQ_ID_VAL_OP:
2242 Question = IdToQuestion (FormSet, Form, OpCode->QuestionId);
2243 if (Question == NULL) {
2244 Value->Type = EFI_IFR_TYPE_UNDEFINED;
2245 break;
2246 }
2247
2248 Status = CompareHiiValue (&Question->HiiValue, &OpCode->Value, &Result, NULL);
2249 if (Status == EFI_UNSUPPORTED) {
2250 Status = EFI_SUCCESS;
2251 Value->Type = EFI_IFR_TYPE_UNDEFINED;
2252 break;
2253 }
2254
2255 if (EFI_ERROR (Status)) {
2256 goto Done;
2257 }
2258 Value->Value.b = (BOOLEAN) ((Result == 0) ? TRUE : FALSE);
2259 break;
2260
2261 case EFI_IFR_EQ_ID_ID_OP:
2262 Question = IdToQuestion (FormSet, Form, OpCode->QuestionId);
2263 if (Question == NULL) {
2264 Value->Type = EFI_IFR_TYPE_UNDEFINED;
2265 break;
2266 }
2267
2268 Question2 = IdToQuestion (FormSet, Form, OpCode->QuestionId2);
2269 if (Question2 == NULL) {
2270 Value->Type = EFI_IFR_TYPE_UNDEFINED;
2271 break;
2272 }
2273
2274 Status = CompareHiiValue (&Question->HiiValue, &Question2->HiiValue, &Result, FormSet->HiiHandle);
2275 if (Status == EFI_UNSUPPORTED) {
2276 Value->Type = EFI_IFR_TYPE_UNDEFINED;
2277 Status = EFI_SUCCESS;
2278 break;
2279 }
2280 if (EFI_ERROR (Status)) {
2281 goto Done;
2282 }
2283 Value->Value.b = (BOOLEAN) ((Result == 0) ? TRUE : FALSE);
2284 break;
2285
2286 case EFI_IFR_EQ_ID_VAL_LIST_OP:
2287 Question = IdToQuestion (FormSet, Form, OpCode->QuestionId);
2288 if (Question == NULL) {
2289 Value->Type = EFI_IFR_TYPE_UNDEFINED;
2290 break;
2291 }
2292
2293 Value->Value.b = FALSE;
2294 for (Index =0; Index < OpCode->ListLength; Index++) {
2295 if (Question->HiiValue.Value.u16 == OpCode->ValueList[Index]) {
2296 Value->Value.b = TRUE;
2297 break;
2298 }
2299 }
2300 break;
2301
2302 case EFI_IFR_DUP_OP:
2303 Status = PopExpression (Value);
2304 if (EFI_ERROR (Status)) {
2305 goto Done;
2306 }
2307
2308 Status = PushExpression (Value);
2309 break;
2310
2311 case EFI_IFR_QUESTION_REF1_OP:
2312 case EFI_IFR_THIS_OP:
2313 Question = IdToQuestion (FormSet, Form, OpCode->QuestionId);
2314 if (Question == NULL) {
2315 Status = EFI_NOT_FOUND;
2316 goto Done;
2317 }
2318
2319 Value = &Question->HiiValue;
2320 break;
2321
2322 case EFI_IFR_SECURITY_OP:
2323 Value->Value.b = CheckUserPrivilege (&OpCode->Guid);
2324 break;
2325
2326 case EFI_IFR_GET_OP:
2327 //
2328 // Get Value from VarStore buffer, EFI VarStore, Name/Value VarStore.
2329 //
2330 Value->Type = EFI_IFR_TYPE_UNDEFINED;
2331 Value->Value.u8 = 0;
2332 if (OpCode->VarStorage != NULL) {
2333 switch (OpCode->VarStorage->Type) {
2334 case EFI_HII_VARSTORE_BUFFER:
2335 case EFI_HII_VARSTORE_EFI_VARIABLE_BUFFER:
2336 //
2337 // Get value from Edit Buffer
2338 //
2339 Value->Type = OpCode->ValueType;
2340 CopyMem (&Value->Value, OpCode->VarStorage->EditBuffer + OpCode->VarStoreInfo.VarOffset, OpCode->ValueWidth);
2341 break;
2342 case EFI_HII_VARSTORE_NAME_VALUE:
2343 if (OpCode->ValueType != EFI_IFR_TYPE_STRING) {
2344 //
2345 // Get value from string except for STRING value.
2346 //
2347 Status = GetValueByName (OpCode->VarStorage, OpCode->ValueName, &StrPtr, GetSetValueWithEditBuffer);
2348 if (!EFI_ERROR (Status)) {
2349 ASSERT (StrPtr != NULL);
2350 TempLength = StrLen (StrPtr);
2351 if (OpCode->ValueWidth >= ((TempLength + 1) / 2)) {
2352 Value->Type = OpCode->ValueType;
2353 TempBuffer = (UINT8 *) &Value->Value;
2354 ZeroMem (TempStr, sizeof (TempStr));
2355 for (Index = 0; Index < TempLength; Index ++) {
2356 TempStr[0] = StrPtr[TempLength - Index - 1];
2357 DigitUint8 = (UINT8) StrHexToUint64 (TempStr);
2358 if ((Index & 1) == 0) {
2359 TempBuffer [Index/2] = DigitUint8;
2360 } else {
2361 TempBuffer [Index/2] = (UINT8) ((DigitUint8 << 4) + TempBuffer [Index/2]);
2362 }
2363 }
2364 }
2365 }
2366 }
2367 break;
2368 case EFI_HII_VARSTORE_EFI_VARIABLE:
2369 //
2370 // Get value from variable.
2371 //
2372 TempLength = OpCode->ValueWidth;
2373 Value->Type = OpCode->ValueType;
2374 Status = gRT->GetVariable (
2375 OpCode->ValueName,
2376 &OpCode->VarStorage->Guid,
2377 NULL,
2378 &TempLength,
2379 &Value->Value
2380 );
2381 if (EFI_ERROR (Status)) {
2382 Value->Type = EFI_IFR_TYPE_UNDEFINED;
2383 Value->Value.u8 = 0;
2384 }
2385 break;
2386 default:
2387 //
2388 // Not recognize storage.
2389 //
2390 Status = EFI_UNSUPPORTED;
2391 goto Done;
2392 }
2393 } else {
2394 //
2395 // For Time/Date Data
2396 //
2397 if (OpCode->ValueType != EFI_IFR_TYPE_DATE && OpCode->ValueType != EFI_IFR_TYPE_TIME) {
2398 //
2399 // Only support Data/Time data when storage doesn't exist.
2400 //
2401 Status = EFI_UNSUPPORTED;
2402 goto Done;
2403 }
2404 Status = gRT->GetTime (&EfiTime, NULL);
2405 if (!EFI_ERROR (Status)) {
2406 if (OpCode->ValueType == EFI_IFR_TYPE_DATE) {
2407 switch (OpCode->VarStoreInfo.VarOffset) {
2408 case 0x00:
2409 Value->Type = EFI_IFR_TYPE_NUM_SIZE_16;
2410 Value->Value.u16 = EfiTime.Year;
2411 break;
2412 case 0x02:
2413 Value->Type = EFI_IFR_TYPE_NUM_SIZE_8;
2414 Value->Value.u8 = EfiTime.Month;
2415 break;
2416 case 0x03:
2417 Value->Type = EFI_IFR_TYPE_NUM_SIZE_8;
2418 Value->Value.u8 = EfiTime.Day;
2419 break;
2420 default:
2421 //
2422 // Invalid Date field.
2423 //
2424 Status = EFI_INVALID_PARAMETER;
2425 goto Done;
2426 }
2427 } else {
2428 switch (OpCode->VarStoreInfo.VarOffset) {
2429 case 0x00:
2430 Value->Type = EFI_IFR_TYPE_NUM_SIZE_8;
2431 Value->Value.u8 = EfiTime.Hour;
2432 break;
2433 case 0x01:
2434 Value->Type = EFI_IFR_TYPE_NUM_SIZE_8;
2435 Value->Value.u8 = EfiTime.Minute;
2436 break;
2437 case 0x02:
2438 Value->Type = EFI_IFR_TYPE_NUM_SIZE_8;
2439 Value->Value.u8 = EfiTime.Second;
2440 break;
2441 default:
2442 //
2443 // Invalid Time field.
2444 //
2445 Status = EFI_INVALID_PARAMETER;
2446 goto Done;
2447 }
2448 }
2449 }
2450 }
2451
2452 break;
2453
2454 case EFI_IFR_QUESTION_REF3_OP:
2455 //
2456 // EFI_IFR_QUESTION_REF3
2457 // Pop an expression from the expression stack
2458 //
2459 Status = PopExpression (Value);
2460 if (EFI_ERROR (Status)) {
2461 goto Done;
2462 }
2463
2464 //
2465 // Validate the expression value
2466 //
2467 if ((Value->Type > EFI_IFR_TYPE_NUM_SIZE_64) || (Value->Value.u64 > 0xffff)) {
2468 Value->Type = EFI_IFR_TYPE_UNDEFINED;
2469 break;
2470 }
2471
2472 if (OpCode->DevicePath != 0) {
2473 Value->Type = EFI_IFR_TYPE_UNDEFINED;
2474
2475 StrPtr = GetToken (OpCode->DevicePath, FormSet->HiiHandle);
2476 if (StrPtr != NULL && mPathFromText != NULL) {
2477 DevicePath = mPathFromText->ConvertTextToDevicePath(StrPtr);
2478 if (DevicePath != NULL && GetQuestionValueFromForm(DevicePath, NULL, &OpCode->Guid, Value->Value.u16, &QuestionVal)) {
2479 Value = &QuestionVal;
2480 }
2481 if (DevicePath != NULL) {
2482 FreePool (DevicePath);
2483 }
2484 }
2485
2486 if (StrPtr != NULL) {
2487 FreePool (StrPtr);
2488 }
2489 } else if (CompareGuid (&OpCode->Guid, &gZeroGuid) != 0) {
2490 if (!GetQuestionValueFromForm(NULL, FormSet->HiiHandle, &OpCode->Guid, Value->Value.u16, &QuestionVal)){
2491 Value->Type = EFI_IFR_TYPE_UNDEFINED;
2492 break;
2493 }
2494 Value = &QuestionVal;
2495 } else {
2496 Question = IdToQuestion (FormSet, Form, Value->Value.u16);
2497 if (Question == NULL) {
2498 Value->Type = EFI_IFR_TYPE_UNDEFINED;
2499 break;
2500 }
2501
2502 //
2503 // push the questions' value on to the expression stack
2504 //
2505 Value = &Question->HiiValue;
2506 }
2507 break;
2508
2509 case EFI_IFR_RULE_REF_OP:
2510 //
2511 // Find expression for this rule
2512 //
2513 RuleExpression = RuleIdToExpression (Form, OpCode->RuleId);
2514 if (RuleExpression == NULL) {
2515 Value->Type = EFI_IFR_TYPE_UNDEFINED;
2516 break;
2517 }
2518
2519 //
2520 // Evaluate this rule expression
2521 //
2522 Status = EvaluateExpression (FormSet, Form, RuleExpression);
2523 if (EFI_ERROR (Status) || RuleExpression->Result.Type == EFI_IFR_TYPE_UNDEFINED) {
2524 Value->Type = EFI_IFR_TYPE_UNDEFINED;
2525 break;
2526 }
2527
2528 Value = &RuleExpression->Result;
2529 break;
2530
2531 case EFI_IFR_STRING_REF1_OP:
2532 Value->Type = EFI_IFR_TYPE_STRING;
2533 Value->Value.string = OpCode->Value.Value.string;
2534 break;
2535
2536 //
2537 // Constant
2538 //
2539 case EFI_IFR_TRUE_OP:
2540 case EFI_IFR_FALSE_OP:
2541 case EFI_IFR_ONE_OP:
2542 case EFI_IFR_ONES_OP:
2543 case EFI_IFR_UINT8_OP:
2544 case EFI_IFR_UINT16_OP:
2545 case EFI_IFR_UINT32_OP:
2546 case EFI_IFR_UINT64_OP:
2547 case EFI_IFR_UNDEFINED_OP:
2548 case EFI_IFR_VERSION_OP:
2549 case EFI_IFR_ZERO_OP:
2550 Value = &OpCode->Value;
2551 break;
2552
2553 //
2554 // unary-op
2555 //
2556 case EFI_IFR_LENGTH_OP:
2557 Status = PopExpression (Value);
2558 if (EFI_ERROR (Status)) {
2559 goto Done;
2560 }
2561 if (Value->Type != EFI_IFR_TYPE_STRING && Value->Type != EFI_IFR_TYPE_BUFFER) {
2562 Value->Type = EFI_IFR_TYPE_UNDEFINED;
2563 break;
2564 }
2565
2566 if (Value->Type == EFI_IFR_TYPE_STRING) {
2567 StrPtr = GetToken (Value->Value.string, FormSet->HiiHandle);
2568 if (StrPtr == NULL) {
2569 Status = EFI_INVALID_PARAMETER;
2570 goto Done;
2571 }
2572
2573 Value->Type = EFI_IFR_TYPE_NUM_SIZE_64;
2574 Value->Value.u64 = StrLen (StrPtr);
2575 FreePool (StrPtr);
2576 } else {
2577 Value->Type = EFI_IFR_TYPE_NUM_SIZE_64;
2578 Value->Value.u64 = Value->BufferLen;
2579 FreePool (Value->Buffer);
2580 }
2581 break;
2582
2583 case EFI_IFR_NOT_OP:
2584 Status = PopExpression (Value);
2585 if (EFI_ERROR (Status)) {
2586 goto Done;
2587 }
2588 if (Value->Type != EFI_IFR_TYPE_BOOLEAN) {
2589 Value->Type = EFI_IFR_TYPE_UNDEFINED;
2590 break;
2591 }
2592 Value->Value.b = (BOOLEAN) (!Value->Value.b);
2593 break;
2594
2595 case EFI_IFR_QUESTION_REF2_OP:
2596 //
2597 // Pop an expression from the expression stack
2598 //
2599 Status = PopExpression (Value);
2600 if (EFI_ERROR (Status)) {
2601 goto Done;
2602 }
2603
2604 //
2605 // Validate the expression value
2606 //
2607 if ((Value->Type > EFI_IFR_TYPE_NUM_SIZE_64) || (Value->Value.u64 > 0xffff)) {
2608 Value->Type = EFI_IFR_TYPE_UNDEFINED;
2609 break;
2610 }
2611
2612 Question = IdToQuestion (FormSet, Form, Value->Value.u16);
2613 if (Question == NULL) {
2614 Value->Type = EFI_IFR_TYPE_UNDEFINED;
2615 break;
2616 }
2617
2618 Value = &Question->HiiValue;
2619 break;
2620
2621 case EFI_IFR_STRING_REF2_OP:
2622 //
2623 // Pop an expression from the expression stack
2624 //
2625 Status = PopExpression (Value);
2626 if (EFI_ERROR (Status)) {
2627 goto Done;
2628 }
2629
2630 //
2631 // Validate the expression value
2632 //
2633 if ((Value->Type > EFI_IFR_TYPE_NUM_SIZE_64) || (Value->Value.u64 > 0xffff)) {
2634 Value->Type = EFI_IFR_TYPE_UNDEFINED;
2635 break;
2636 }
2637
2638 Value->Type = EFI_IFR_TYPE_STRING;
2639 StrPtr = GetToken (Value->Value.u16, FormSet->HiiHandle);
2640 if (StrPtr == NULL) {
2641 //
2642 // If String not exit, push an empty string
2643 //
2644 Value->Value.string = NewString (gEmptyString, FormSet->HiiHandle);
2645 } else {
2646 Index = (UINT16) Value->Value.u64;
2647 Value->Value.string = Index;
2648 FreePool (StrPtr);
2649 }
2650 break;
2651
2652 case EFI_IFR_TO_BOOLEAN_OP:
2653 //
2654 // Pop an expression from the expression stack
2655 //
2656 Status = PopExpression (Value);
2657 if (EFI_ERROR (Status)) {
2658 goto Done;
2659 }
2660
2661 //
2662 // Convert an expression to a Boolean
2663 //
2664 if (Value->Type <= EFI_IFR_TYPE_DATE) {
2665 //
2666 // When converting from an unsigned integer, zero will be converted to
2667 // FALSE and any other value will be converted to TRUE.
2668 //
2669 Value->Value.b = (BOOLEAN) (Value->Value.u64 != 0);
2670
2671 Value->Type = EFI_IFR_TYPE_BOOLEAN;
2672 } else if (Value->Type == EFI_IFR_TYPE_STRING) {
2673 //
2674 // When converting from a string, if case-insensitive compare
2675 // with "true" is True, then push True. If a case-insensitive compare
2676 // with "false" is True, then push False. Otherwise, push Undefined.
2677 //
2678 StrPtr = GetToken (Value->Value.string, FormSet->HiiHandle);
2679 if (StrPtr == NULL) {
2680 Status = EFI_INVALID_PARAMETER;
2681 goto Done;
2682 }
2683
2684 IfrStrToUpper (StrPtr);
2685 if (StrCmp (StrPtr, L"TRUE") == 0){
2686 Value->Value.b = TRUE;
2687 Value->Type = EFI_IFR_TYPE_BOOLEAN;
2688 } else if (StrCmp (StrPtr, L"FALSE") == 0) {
2689 Value->Value.b = FALSE;
2690 Value->Type = EFI_IFR_TYPE_BOOLEAN;
2691 } else {
2692 Value->Type = EFI_IFR_TYPE_UNDEFINED;
2693 }
2694 FreePool (StrPtr);
2695 } else if (Value->Type == EFI_IFR_TYPE_BUFFER) {
2696 //
2697 // When converting from a buffer, if the buffer is all zeroes,
2698 // then push False. Otherwise push True.
2699 //
2700 for (Index =0; Index < Value->BufferLen; Index ++) {
2701 if (Value->Buffer[Index] != 0) {
2702 break;
2703 }
2704 }
2705
2706 if (Index >= Value->BufferLen) {
2707 Value->Value.b = FALSE;
2708 } else {
2709 Value->Value.b = TRUE;
2710 }
2711 Value->Type = EFI_IFR_TYPE_BOOLEAN;
2712 FreePool (Value->Buffer);
2713 }
2714 break;
2715
2716 case EFI_IFR_TO_STRING_OP:
2717 Status = IfrToString (FormSet, OpCode->Format, Value);
2718 break;
2719
2720 case EFI_IFR_TO_UINT_OP:
2721 Status = IfrToUint (FormSet, Value);
2722 break;
2723
2724 case EFI_IFR_TO_LOWER_OP:
2725 case EFI_IFR_TO_UPPER_OP:
2726 Status = InitializeUnicodeCollationProtocol ();
2727 if (EFI_ERROR (Status)) {
2728 goto Done;
2729 }
2730
2731 Status = PopExpression (Value);
2732 if (EFI_ERROR (Status)) {
2733 goto Done;
2734 }
2735
2736 if (Value->Type != EFI_IFR_TYPE_STRING) {
2737 Value->Type = EFI_IFR_TYPE_UNDEFINED;
2738 break;
2739 }
2740
2741 StrPtr = GetToken (Value->Value.string, FormSet->HiiHandle);
2742 if (StrPtr == NULL) {
2743 Status = EFI_NOT_FOUND;
2744 goto Done;
2745 }
2746
2747 if (OpCode->Operand == EFI_IFR_TO_LOWER_OP) {
2748 mUnicodeCollation->StrLwr (mUnicodeCollation, StrPtr);
2749 } else {
2750 mUnicodeCollation->StrUpr (mUnicodeCollation, StrPtr);
2751 }
2752 Value->Value.string = NewString (StrPtr, FormSet->HiiHandle);
2753 FreePool (StrPtr);
2754 break;
2755
2756 case EFI_IFR_BITWISE_NOT_OP:
2757 //
2758 // Pop an expression from the expression stack
2759 //
2760 Status = PopExpression (Value);
2761 if (EFI_ERROR (Status)) {
2762 goto Done;
2763 }
2764 if (Value->Type > EFI_IFR_TYPE_DATE) {
2765 Value->Type = EFI_IFR_TYPE_UNDEFINED;
2766 break;
2767 }
2768
2769 Value->Type = EFI_IFR_TYPE_NUM_SIZE_64;
2770 Value->Value.u64 = ~Value->Value.u64;
2771 break;
2772
2773 case EFI_IFR_SET_OP:
2774 //
2775 // Pop an expression from the expression stack
2776 //
2777 Status = PopExpression (Value);
2778 if (EFI_ERROR (Status)) {
2779 goto Done;
2780 }
2781 Data1.Type = EFI_IFR_TYPE_BOOLEAN;
2782 Data1.Value.b = FALSE;
2783 //
2784 // Set value to var storage buffer
2785 //
2786 if (OpCode->VarStorage != NULL) {
2787 switch (OpCode->VarStorage->Type) {
2788 case EFI_HII_VARSTORE_BUFFER:
2789 case EFI_HII_VARSTORE_EFI_VARIABLE_BUFFER:
2790 CopyMem (OpCode->VarStorage->EditBuffer + OpCode->VarStoreInfo.VarOffset, &Value->Value, OpCode->ValueWidth);
2791 Data1.Value.b = TRUE;
2792 break;
2793 case EFI_HII_VARSTORE_NAME_VALUE:
2794 if (OpCode->ValueType != EFI_IFR_TYPE_STRING) {
2795 NameValue = AllocateZeroPool ((OpCode->ValueWidth * 2 + 1) * sizeof (CHAR16));
2796 ASSERT (Value != NULL);
2797 //
2798 // Convert Buffer to Hex String
2799 //
2800 TempBuffer = (UINT8 *) &Value->Value + OpCode->ValueWidth - 1;
2801 StrPtr = NameValue;
2802 for (Index = 0; Index < OpCode->ValueWidth; Index ++, TempBuffer --) {
2803 StrPtr += UnicodeValueToString (StrPtr, PREFIX_ZERO | RADIX_HEX, *TempBuffer, 2);
2804 }
2805 Status = SetValueByName (OpCode->VarStorage, OpCode->ValueName, NameValue, GetSetValueWithEditBuffer);
2806 FreePool (NameValue);
2807 if (!EFI_ERROR (Status)) {
2808 Data1.Value.b = TRUE;
2809 }
2810 }
2811 break;
2812 case EFI_HII_VARSTORE_EFI_VARIABLE:
2813 Status = gRT->SetVariable (
2814 OpCode->ValueName,
2815 &OpCode->VarStorage->Guid,
2816 OpCode->VarStorage->Attributes,
2817 OpCode->ValueWidth,
2818 &Value->Value
2819 );
2820 if (!EFI_ERROR (Status)) {
2821 Data1.Value.b = TRUE;
2822 }
2823 break;
2824 default:
2825 //
2826 // Not recognize storage.
2827 //
2828 Status = EFI_UNSUPPORTED;
2829 goto Done;
2830 break;
2831 }
2832 } else {
2833 //
2834 // For Time/Date Data
2835 //
2836 if (OpCode->ValueType != EFI_IFR_TYPE_DATE && OpCode->ValueType != EFI_IFR_TYPE_TIME) {
2837 //
2838 // Only support Data/Time data when storage doesn't exist.
2839 //
2840 Status = EFI_UNSUPPORTED;
2841 goto Done;
2842 }
2843 Status = gRT->GetTime (&EfiTime, NULL);
2844 if (!EFI_ERROR (Status)) {
2845 if (OpCode->ValueType == EFI_IFR_TYPE_DATE) {
2846 switch (OpCode->VarStoreInfo.VarOffset) {
2847 case 0x00:
2848 EfiTime.Year = Value->Value.u16;
2849 break;
2850 case 0x02:
2851 EfiTime.Month = Value->Value.u8;
2852 break;
2853 case 0x03:
2854 EfiTime.Day = Value->Value.u8;
2855 break;
2856 default:
2857 //
2858 // Invalid Date field.
2859 //
2860 Status = EFI_INVALID_PARAMETER;
2861 goto Done;
2862 }
2863 } else {
2864 switch (OpCode->VarStoreInfo.VarOffset) {
2865 case 0x00:
2866 EfiTime.Hour = Value->Value.u8;
2867 break;
2868 case 0x01:
2869 EfiTime.Minute = Value->Value.u8;
2870 break;
2871 case 0x02:
2872 EfiTime.Second = Value->Value.u8;
2873 break;
2874 default:
2875 //
2876 // Invalid Time field.
2877 //
2878 Status = EFI_INVALID_PARAMETER;
2879 goto Done;
2880 }
2881 }
2882 Status = gRT->SetTime (&EfiTime);
2883 if (!EFI_ERROR (Status)) {
2884 Data1.Value.b = TRUE;
2885 }
2886 }
2887 }
2888 Value = &Data1;
2889 break;
2890
2891 //
2892 // binary-op
2893 //
2894 case EFI_IFR_ADD_OP:
2895 case EFI_IFR_SUBTRACT_OP:
2896 case EFI_IFR_MULTIPLY_OP:
2897 case EFI_IFR_DIVIDE_OP:
2898 case EFI_IFR_MODULO_OP:
2899 case EFI_IFR_BITWISE_AND_OP:
2900 case EFI_IFR_BITWISE_OR_OP:
2901 case EFI_IFR_SHIFT_LEFT_OP:
2902 case EFI_IFR_SHIFT_RIGHT_OP:
2903 //
2904 // Pop an expression from the expression stack
2905 //
2906 Status = PopExpression (&Data2);
2907 if (EFI_ERROR (Status)) {
2908 goto Done;
2909 }
2910
2911 //
2912 // Pop another expression from the expression stack
2913 //
2914 Status = PopExpression (&Data1);
2915 if (EFI_ERROR (Status)) {
2916 goto Done;
2917 }
2918
2919 if (Data2.Type > EFI_IFR_TYPE_DATE) {
2920 Value->Type = EFI_IFR_TYPE_UNDEFINED;
2921 break;
2922 }
2923
2924
2925 if (Data1.Type > EFI_IFR_TYPE_DATE) {
2926 Value->Type = EFI_IFR_TYPE_UNDEFINED;
2927 break;
2928 }
2929
2930 Value->Type = EFI_IFR_TYPE_NUM_SIZE_64;
2931
2932 switch (OpCode->Operand) {
2933 case EFI_IFR_ADD_OP:
2934 Value->Value.u64 = Data1.Value.u64 + Data2.Value.u64;
2935 break;
2936
2937 case EFI_IFR_SUBTRACT_OP:
2938 Value->Value.u64 = Data1.Value.u64 - Data2.Value.u64;
2939 break;
2940
2941 case EFI_IFR_MULTIPLY_OP:
2942 Value->Value.u64 = MultU64x32 (Data1.Value.u64, (UINT32) Data2.Value.u64);
2943 break;
2944
2945 case EFI_IFR_DIVIDE_OP:
2946 Value->Value.u64 = DivU64x32 (Data1.Value.u64, (UINT32) Data2.Value.u64);
2947 break;
2948
2949 case EFI_IFR_MODULO_OP:
2950 DivU64x32Remainder (Data1.Value.u64, (UINT32) Data2.Value.u64, &TempValue);
2951 Value->Value.u64 = TempValue;
2952 break;
2953
2954 case EFI_IFR_BITWISE_AND_OP:
2955 Value->Value.u64 = Data1.Value.u64 & Data2.Value.u64;
2956 break;
2957
2958 case EFI_IFR_BITWISE_OR_OP:
2959 Value->Value.u64 = Data1.Value.u64 | Data2.Value.u64;
2960 break;
2961
2962 case EFI_IFR_SHIFT_LEFT_OP:
2963 Value->Value.u64 = LShiftU64 (Data1.Value.u64, (UINTN) Data2.Value.u64);
2964 break;
2965
2966 case EFI_IFR_SHIFT_RIGHT_OP:
2967 Value->Value.u64 = RShiftU64 (Data1.Value.u64, (UINTN) Data2.Value.u64);
2968 break;
2969
2970 default:
2971 break;
2972 }
2973 break;
2974
2975 case EFI_IFR_AND_OP:
2976 case EFI_IFR_OR_OP:
2977 //
2978 // Two Boolean operator
2979 //
2980 Status = PopExpression (&Data2);
2981 if (EFI_ERROR (Status)) {
2982 goto Done;
2983 }
2984
2985 //
2986 // Pop another expression from the expression stack
2987 //
2988 Status = PopExpression (&Data1);
2989 if (EFI_ERROR (Status)) {
2990 goto Done;
2991 }
2992
2993 if (Data2.Type != EFI_IFR_TYPE_BOOLEAN) {
2994 Value->Type = EFI_IFR_TYPE_UNDEFINED;
2995 break;
2996 }
2997
2998 if (Data1.Type != EFI_IFR_TYPE_BOOLEAN) {
2999 Value->Type = EFI_IFR_TYPE_UNDEFINED;
3000 break;
3001 }
3002
3003 if (OpCode->Operand == EFI_IFR_AND_OP) {
3004 Value->Value.b = (BOOLEAN) (Data1.Value.b && Data2.Value.b);
3005 } else {
3006 Value->Value.b = (BOOLEAN) (Data1.Value.b || Data2.Value.b);
3007 }
3008 break;
3009
3010 case EFI_IFR_EQUAL_OP:
3011 case EFI_IFR_NOT_EQUAL_OP:
3012 case EFI_IFR_GREATER_EQUAL_OP:
3013 case EFI_IFR_GREATER_THAN_OP:
3014 case EFI_IFR_LESS_EQUAL_OP:
3015 case EFI_IFR_LESS_THAN_OP:
3016 //
3017 // Compare two integer, string, boolean or date/time
3018 //
3019 Status = PopExpression (&Data2);
3020 if (EFI_ERROR (Status)) {
3021 goto Done;
3022 }
3023
3024 //
3025 // Pop another expression from the expression stack
3026 //
3027 Status = PopExpression (&Data1);
3028 if (EFI_ERROR (Status)) {
3029 goto Done;
3030 }
3031
3032 if (Data2.Type > EFI_IFR_TYPE_BOOLEAN &&
3033 Data2.Type != EFI_IFR_TYPE_STRING &&
3034 Data2.Type != EFI_IFR_TYPE_BUFFER) {
3035 Value->Type = EFI_IFR_TYPE_UNDEFINED;
3036 break;
3037 }
3038
3039 if (Data1.Type > EFI_IFR_TYPE_BOOLEAN &&
3040 Data1.Type != EFI_IFR_TYPE_STRING &&
3041 Data1.Type != EFI_IFR_TYPE_BUFFER) {
3042 Value->Type = EFI_IFR_TYPE_UNDEFINED;
3043 break;
3044 }
3045
3046 Status = CompareHiiValue (&Data1, &Data2, &Result, FormSet->HiiHandle);
3047 if (Data1.Type == EFI_IFR_TYPE_BUFFER) {
3048 FreePool (Data1.Buffer);
3049 FreePool (Data2.Buffer);
3050 }
3051
3052 if (Status == EFI_UNSUPPORTED) {
3053 Value->Type = EFI_IFR_TYPE_UNDEFINED;
3054 Status = EFI_SUCCESS;
3055 break;
3056 }
3057
3058 if (EFI_ERROR (Status)) {
3059 goto Done;
3060 }
3061
3062 switch (OpCode->Operand) {
3063 case EFI_IFR_EQUAL_OP:
3064 Value->Value.b = (BOOLEAN) ((Result == 0) ? TRUE : FALSE);
3065 break;
3066
3067 case EFI_IFR_NOT_EQUAL_OP:
3068 Value->Value.b = (BOOLEAN) ((Result != 0) ? TRUE : FALSE);
3069 break;
3070
3071 case EFI_IFR_GREATER_EQUAL_OP:
3072 Value->Value.b = (BOOLEAN) ((Result >= 0) ? TRUE : FALSE);
3073 break;
3074
3075 case EFI_IFR_GREATER_THAN_OP:
3076 Value->Value.b = (BOOLEAN) ((Result > 0) ? TRUE : FALSE);
3077 break;
3078
3079 case EFI_IFR_LESS_EQUAL_OP:
3080 Value->Value.b = (BOOLEAN) ((Result <= 0) ? TRUE : FALSE);
3081 break;
3082
3083 case EFI_IFR_LESS_THAN_OP:
3084 Value->Value.b = (BOOLEAN) ((Result < 0) ? TRUE : FALSE);
3085 break;
3086
3087 default:
3088 break;
3089 }
3090 break;
3091
3092 case EFI_IFR_MATCH_OP:
3093 Status = InitializeUnicodeCollationProtocol ();
3094 if (EFI_ERROR (Status)) {
3095 goto Done;
3096 }
3097
3098 Status = IfrMatch (FormSet, Value);
3099 break;
3100
3101 case EFI_IFR_CATENATE_OP:
3102 Status = IfrCatenate (FormSet, Value);
3103 break;
3104
3105 //
3106 // ternary-op
3107 //
3108 case EFI_IFR_CONDITIONAL_OP:
3109 //
3110 // Pop third expression from the expression stack
3111 //
3112 Status = PopExpression (&Data3);
3113 if (EFI_ERROR (Status)) {
3114 goto Done;
3115 }
3116
3117 //
3118 // Pop second expression from the expression stack
3119 //
3120 Status = PopExpression (&Data2);
3121 if (EFI_ERROR (Status)) {
3122 goto Done;
3123 }
3124
3125 //
3126 // Pop first expression from the expression stack
3127 //
3128 Status = PopExpression (&Data1);
3129 if (EFI_ERROR (Status)) {
3130 goto Done;
3131 }
3132 if (Data1.Type != EFI_IFR_TYPE_BOOLEAN) {
3133 Value->Type = EFI_IFR_TYPE_UNDEFINED;
3134 break;
3135 }
3136
3137 if (Data1.Value.b) {
3138 Value = &Data3;
3139 } else {
3140 Value = &Data2;
3141 }
3142 break;
3143
3144 case EFI_IFR_FIND_OP:
3145 Status = IfrFind (FormSet, OpCode->Format, Value);
3146 break;
3147
3148 case EFI_IFR_MID_OP:
3149 Status = IfrMid (FormSet, Value);
3150 break;
3151
3152 case EFI_IFR_TOKEN_OP:
3153 Status = IfrToken (FormSet, Value);
3154 break;
3155
3156 case EFI_IFR_SPAN_OP:
3157 Status = IfrSpan (FormSet, OpCode->Flags, Value);
3158 break;
3159
3160 case EFI_IFR_MAP_OP:
3161 //
3162 // Pop the check value
3163 //
3164 Status = PopExpression (&Data1);
3165 if (EFI_ERROR (Status)) {
3166 goto Done;
3167 }
3168 //
3169 // Check MapExpression list is valid.
3170 //
3171 if (OpCode->MapExpressionList.ForwardLink == NULL) {
3172 Status = EFI_INVALID_PARAMETER;
3173 goto Done;
3174 }
3175 //
3176 // Go through map expression list.
3177 //
3178 SubExpressionLink = GetFirstNode(&OpCode->MapExpressionList);
3179 while (!IsNull (&OpCode->MapExpressionList, SubExpressionLink)) {
3180 SubExpression = FORM_EXPRESSION_FROM_LINK (SubExpressionLink);
3181 //
3182 // Evaluate the first expression in this pair.
3183 //
3184 Status = EvaluateExpression (FormSet, Form, SubExpression);
3185 if (EFI_ERROR (Status)) {
3186 goto Done;
3187 }
3188 //
3189 // Compare the expression value with current value
3190 //
3191 if ((CompareHiiValue (&Data1, &SubExpression->Result, &Result, NULL) == EFI_SUCCESS) && (Result == 0)) {
3192 //
3193 // Try get the map value.
3194 //
3195 SubExpressionLink = GetNextNode (&OpCode->MapExpressionList, SubExpressionLink);
3196 if (IsNull (&OpCode->MapExpressionList, SubExpressionLink)) {
3197 Status = EFI_INVALID_PARAMETER;
3198 goto Done;
3199 }
3200 SubExpression = FORM_EXPRESSION_FROM_LINK (SubExpressionLink);
3201 Status = EvaluateExpression (FormSet, Form, SubExpression);
3202 if (EFI_ERROR (Status)) {
3203 goto Done;
3204 }
3205 Value = &SubExpression->Result;
3206 break;
3207 }
3208 //
3209 // Skip the second expression on this pair.
3210 //
3211 SubExpressionLink = GetNextNode (&OpCode->MapExpressionList, SubExpressionLink);
3212 if (IsNull (&OpCode->MapExpressionList, SubExpressionLink)) {
3213 Status = EFI_INVALID_PARAMETER;
3214 goto Done;
3215 }
3216 //
3217 // Goto the first expression on next pair.
3218 //
3219 SubExpressionLink = GetNextNode (&OpCode->MapExpressionList, SubExpressionLink);
3220 }
3221
3222 //
3223 // No map value is found.
3224 //
3225 if (IsNull (&OpCode->MapExpressionList, SubExpressionLink)) {
3226 Value->Type = EFI_IFR_TYPE_UNDEFINED;
3227 Value->Value.u8 = 0;
3228 }
3229 break;
3230
3231 default:
3232 break;
3233 }
3234 if (EFI_ERROR (Status) || Value->Type == EFI_IFR_TYPE_UNDEFINED) {
3235 goto Done;
3236 }
3237
3238 Status = PushExpression (Value);
3239 if (EFI_ERROR (Status)) {
3240 goto Done;
3241 }
3242 }
3243
3244 //
3245 // Pop the final result from expression stack
3246 //
3247 Value = &Data1;
3248 Status = PopExpression (Value);
3249 if (EFI_ERROR (Status)) {
3250 goto Done;
3251 }
3252
3253 //
3254 // After evaluating an expression, there should be only one value left on the expression stack
3255 //
3256 if (PopExpression (Value) != EFI_ACCESS_DENIED) {
3257 Status = EFI_INVALID_PARAMETER;
3258 }
3259
3260 Done:
3261 RestoreExpressionEvaluationStackOffset (StackOffset);
3262 if (!EFI_ERROR (Status)) {
3263 CopyMem (&Expression->Result, Value, sizeof (EFI_HII_VALUE));
3264 }
3265
3266 return Status;
3267 }
3268
3269 /**
3270 Return the result of the expression list. Check the expression list and
3271 return the highest priority express result.
3272 Priority: DisableIf > SuppressIf > GrayOutIf > FALSE
3273
3274 @param ExpList The input expression list.
3275 @param Evaluate Whether need to evaluate the expression first.
3276 @param FormSet FormSet associated with this expression.
3277 @param Form Form associated with this expression.
3278
3279 @retval EXPRESS_RESULT Return the higher priority express result.
3280 DisableIf > SuppressIf > GrayOutIf > FALSE
3281
3282 **/
3283 EXPRESS_RESULT
3284 EvaluateExpressionList (
3285 IN FORM_EXPRESSION_LIST *ExpList,
3286 IN BOOLEAN Evaluate,
3287 IN FORM_BROWSER_FORMSET *FormSet, OPTIONAL
3288 IN FORM_BROWSER_FORM *Form OPTIONAL
3289 )
3290 {
3291 UINTN Index;
3292 EXPRESS_RESULT ReturnVal;
3293 EXPRESS_RESULT CompareOne;
3294 EFI_STATUS Status;
3295
3296 if (ExpList == NULL) {
3297 return ExpressFalse;
3298 }
3299
3300 ASSERT(ExpList->Signature == FORM_EXPRESSION_LIST_SIGNATURE);
3301 Index = 0;
3302
3303 //
3304 // Check whether need to evaluate the expression first.
3305 //
3306 if (Evaluate) {
3307 while (ExpList->Count > Index) {
3308 Status = EvaluateExpression (FormSet, Form, ExpList->Expression[Index++]);
3309 if (EFI_ERROR (Status)) {
3310 return ExpressFalse;
3311 }
3312 }
3313 }
3314
3315 //
3316 // Run the list of expressions.
3317 //
3318 ReturnVal = ExpressFalse;
3319 for (Index = 0; Index < ExpList->Count; Index++) {
3320 if (ExpList->Expression[Index]->Result.Type == EFI_IFR_TYPE_BOOLEAN &&
3321 ExpList->Expression[Index]->Result.Value.b) {
3322 switch (ExpList->Expression[Index]->Type) {
3323 case EFI_HII_EXPRESSION_SUPPRESS_IF:
3324 CompareOne = ExpressSuppress;
3325 break;
3326
3327 case EFI_HII_EXPRESSION_GRAY_OUT_IF:
3328 CompareOne = ExpressGrayOut;
3329 break;
3330
3331 case EFI_HII_EXPRESSION_DISABLE_IF:
3332 CompareOne = ExpressDisable;
3333 break;
3334
3335 default:
3336 return ExpressFalse;
3337 }
3338
3339 ReturnVal = ReturnVal < CompareOne ? CompareOne : ReturnVal;
3340 }
3341 }
3342
3343 return ReturnVal;
3344 }
EFI Development Kit II mirror for PVE