c8dd259d61
2. Added NULL pointer check before calling FreePool () to fix bugs when free memory. git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@2513 6f19259b-4bc3-4df7-8a09-765794883524
1368 lines
36 KiB
C
1368 lines
36 KiB
C
/*++
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Copyright (c) 2006 - 2007, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name:
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Boolean.c
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Abstract:
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This routine will evaluate the IFR inconsistency data to determine if
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something is a valid entry for a particular expression
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--*/
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#include "Setup.h"
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#include "Ui.h"
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//
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// Global stack used to evaluate boolean expresions
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//
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BOOLEAN *mBooleanEvaluationStack = (BOOLEAN) 0;
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BOOLEAN *mBooleanEvaluationStackEnd = (BOOLEAN) 0;
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STATIC
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VOID
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GrowBooleanStack (
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IN OUT BOOLEAN **Stack,
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IN UINTN StackSizeInBoolean
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)
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/*++
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Routine Description:
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Grow size of the boolean stack
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Arguments:
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Stack - Old stack on the way in and new stack on the way out
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StackSizeInBoolean - New size of the stack
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Returns:
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NONE
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--*/
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{
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BOOLEAN *NewStack;
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NewStack = AllocatePool (StackSizeInBoolean * sizeof (BOOLEAN));
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ASSERT (NewStack != NULL);
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if (*Stack != NULL) {
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//
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// Copy to Old Stack to the New Stack
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//
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CopyMem (
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NewStack,
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mBooleanEvaluationStack,
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(mBooleanEvaluationStackEnd - mBooleanEvaluationStack) * sizeof (BOOLEAN)
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);
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//
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// Make the Stack pointer point to the old data in the new stack
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//
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*Stack = NewStack + (*Stack - mBooleanEvaluationStack);
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//
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// Free The Old Stack
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//
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FreePool (mBooleanEvaluationStack);
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}
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mBooleanEvaluationStack = NewStack;
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mBooleanEvaluationStackEnd = NewStack + StackSizeInBoolean;
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}
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STATIC
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VOID
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InitializeBooleanEvaluator (
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VOID
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)
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/*++
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Routine Description:
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Allocate a global stack for boolean processing.
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Arguments:
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NONE
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Returns:
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NONE
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--*/
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{
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BOOLEAN *NullStack;
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NullStack = NULL;
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GrowBooleanStack (&NullStack, 0x1000);
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}
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STATIC
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VOID
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PushBool (
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IN OUT BOOLEAN **Stack,
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IN BOOLEAN BoolResult
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)
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/*++
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Routine Description:
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Push an element onto the Boolean Stack
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Arguments:
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Stack - Current stack location.
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BoolResult - BOOLEAN to push.
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Returns:
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None.
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--*/
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{
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CopyMem (*Stack, &BoolResult, sizeof (BOOLEAN));
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*Stack += 1;
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if (*Stack >= mBooleanEvaluationStackEnd) {
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//
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// If we run out of stack space make a new one that is 2X as big. Copy
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// the old data into the new stack and update Stack to point to the old
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// data in the new stack.
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//
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GrowBooleanStack (
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Stack,
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(mBooleanEvaluationStackEnd - mBooleanEvaluationStack) * sizeof (BOOLEAN) * 2
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);
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}
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}
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STATIC
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BOOLEAN
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PopBool (
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IN OUT BOOLEAN **Stack
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)
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/*++
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Routine Description:
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Pop an element from the Boolean stack.
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Arguments:
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Stack - Current stack location
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Returns:
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Top of the BOOLEAN stack.
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--*/
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{
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BOOLEAN ReturnValue;
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*Stack -= 1;
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CopyMem (&ReturnValue, *Stack, sizeof (BOOLEAN));
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return ReturnValue;
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}
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STATIC
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EFI_STATUS
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GrowBooleanExpression (
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IN EFI_INCONSISTENCY_DATA *InconsistentTags,
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OUT VOID **BooleanExpression,
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IN OUT UINTN *BooleanExpressionLength
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)
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{
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UINT8 *NewExpression;
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NewExpression = AllocatePool (*BooleanExpressionLength + sizeof (EFI_INCONSISTENCY_DATA));
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ASSERT (NewExpression != NULL);
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if (*BooleanExpression != NULL) {
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//
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// Copy Old buffer to the New buffer
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//
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CopyMem (NewExpression, *BooleanExpression, *BooleanExpressionLength);
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CopyMem (&NewExpression[*BooleanExpressionLength], InconsistentTags, sizeof (EFI_INCONSISTENCY_DATA));
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//
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// Free The Old buffer
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//
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FreePool (*BooleanExpression);
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} else {
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//
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// Copy data into new buffer
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//
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CopyMem (NewExpression, InconsistentTags, sizeof (EFI_INCONSISTENCY_DATA));
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}
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*BooleanExpressionLength = *BooleanExpressionLength + sizeof (EFI_INCONSISTENCY_DATA);
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*BooleanExpression = (VOID *) NewExpression;
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return EFI_SUCCESS;
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}
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STATIC
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VOID
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CreateBooleanExpression (
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IN EFI_FILE_FORM_TAGS *FileFormTags,
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IN UINT16 Value,
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IN UINT16 Id,
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IN BOOLEAN Complex,
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OUT VOID **BooleanExpression,
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OUT UINTN *BooleanExpressionLength
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)
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/*++
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Routine Description:
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Arguments:
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Returns:
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--*/
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{
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UINTN Count;
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EFI_INCONSISTENCY_DATA *InconsistentTags;
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EFI_INCONSISTENCY_DATA FakeInconsistentTags;
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InconsistentTags = FileFormTags->InconsistentTags;
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//
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// Did we run into a question that contains the Id we are looking for?
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//
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for (Count = 0; InconsistentTags->Operand != 0xFF; Count++) {
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//
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// Reserve INVALID_OFFSET_VALUE - 1 for TURE and FALSE, because we need to treat them as well
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// as ideqid etc. but they have no coresponding id, so we reserve this value.
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//
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if (InconsistentTags->QuestionId1 == Id ||
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InconsistentTags->QuestionId1 == INVALID_OFFSET_VALUE - 1) {
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//
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// If !Complex - means evaluate a single if/endif expression
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//
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if (!Complex) {
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//
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// If the ConsistencyId does not match the expression we are looking for
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// skip to the next consistency database entry
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//
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if (InconsistentTags->ConsistencyId != Value) {
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goto NextEntry;
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}
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}
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//
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// We need to rewind to the beginning of the Inconsistent expression
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//
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for (;
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(InconsistentTags->Operand != EFI_IFR_INCONSISTENT_IF_OP) &&
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(InconsistentTags->Operand != EFI_IFR_GRAYOUT_IF_OP) &&
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(InconsistentTags->Operand != EFI_IFR_SUPPRESS_IF_OP);
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) {
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InconsistentTags = InconsistentTags->Previous;
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}
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//
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// Store the consistency check expression, ensure the next for loop starts at the op-code afterwards
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//
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GrowBooleanExpression (InconsistentTags, BooleanExpression, BooleanExpressionLength);
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InconsistentTags = InconsistentTags->Next;
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//
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// Keep growing until we hit the End expression op-code or we hit the beginning of another
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// consistency check like grayout/suppress
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//
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for (;
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InconsistentTags->Operand != EFI_IFR_END_IF_OP &&
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InconsistentTags->Operand != EFI_IFR_GRAYOUT_IF_OP &&
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InconsistentTags->Operand != EFI_IFR_SUPPRESS_IF_OP;
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) {
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GrowBooleanExpression (InconsistentTags, BooleanExpression, BooleanExpressionLength);
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InconsistentTags = InconsistentTags->Next;
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}
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//
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// Store the EndExpression Op-code
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//
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GrowBooleanExpression (InconsistentTags, BooleanExpression, BooleanExpressionLength);
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}
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NextEntry:
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if (InconsistentTags->Next != NULL) {
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//
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// Skip to next entry
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//
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InconsistentTags = InconsistentTags->Next;
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}
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}
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FakeInconsistentTags.Operand = 0;
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//
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// Add one last expression which will signify we have definitely hit the end
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//
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GrowBooleanExpression (&FakeInconsistentTags, BooleanExpression, BooleanExpressionLength);
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}
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STATIC
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EFI_STATUS
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BooleanVariableWorker (
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IN CHAR16 *VariableName,
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IN EFI_VARIABLE_DEFINITION *VariableDefinition,
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IN BOOLEAN *StackPtr,
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IN OUT UINTN *SizeOfVariable,
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IN OUT VOID **VariableData
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)
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/*++
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Routine Description:
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Arguments:
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Returns:
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--*/
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{
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EFI_STATUS Status;
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Status = gRT->GetVariable (
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VariableName,
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&VariableDefinition->Guid,
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NULL,
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SizeOfVariable,
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*VariableData
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);
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if (EFI_ERROR (Status)) {
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if (Status == EFI_BUFFER_TOO_SMALL) {
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*VariableData = AllocatePool (*SizeOfVariable);
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ASSERT (*VariableData != NULL);
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Status = gRT->GetVariable (
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VariableName,
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&VariableDefinition->Guid,
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NULL,
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SizeOfVariable,
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*VariableData
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);
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}
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if (Status == EFI_NOT_FOUND) {
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//
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// This is a serious flaw, we must have some standard result if a variable
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// is not found. Our default behavior must either be return a TRUE or FALSE
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// since there is nothing else we can really do. Therefore, my crystal ball
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// says I will return a FALSE
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//
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PushBool (&StackPtr, FALSE);
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}
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}
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return Status;
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}
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STATIC
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UINT8
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PredicateIfrType (
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IN EFI_INCONSISTENCY_DATA *Iterator
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)
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/*++
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Routine Description:
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This routine is for the purpose of predicate whether the Ifr is generated by a VfrCompiler greater than or equal to 1.88 or
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less than 1.88 which is legacy.
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Arguments:
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Iterator - The pointer to inconsistency tags
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Returns:
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0x2 - If IFR is not legacy
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0x1 - If IFR is legacy
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--*/
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{
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//
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// legacy Ifr cover the states:
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// Not ...
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// Operand Opcode Operand
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//
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// while Operand means ideqval, TRUE, or other what can be evaluated to True or False,
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// and Opcode means AND or OR.
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//
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if (Iterator->Operand == EFI_IFR_NOT_OP ||
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Iterator->Operand == 0) {
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return 0x1;
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} else if (Iterator->Operand == EFI_IFR_EQ_VAR_VAL_OP ||
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Iterator->Operand == EFI_IFR_EQ_ID_VAL_OP ||
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Iterator->Operand == EFI_IFR_EQ_ID_ID_OP ||
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Iterator->Operand == EFI_IFR_EQ_ID_LIST_OP) {
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Iterator++;
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if (Iterator->Operand == EFI_IFR_AND_OP ||
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Iterator->Operand == EFI_IFR_OR_OP) {
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Iterator--;
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return 0x1;
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}
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Iterator--;
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}
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return 0x2;
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}
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STATIC
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VOID
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PostOrderEvaluate (
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IN EFI_FILE_FORM_TAGS *FileFormTags,
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IN UINT16 Width,
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IN OUT EFI_INCONSISTENCY_DATA **PIterator,
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IN OUT BOOLEAN **StackPtr
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)
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/*++
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Routine Description:
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PostOrderEvaluate is used for Ifr generated by VfrCompiler greater than or equal to 1.88,
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which generate Operand Operand Opcode type Ifr.
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PostOrderEvaluete only evaluate boolean expression part, not suppressif/grayoutif. TRUE,
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FALSE, >=, >, (, ) are supported.
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Arguments:
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FileFormTags - The pointer to the tags of the form
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Width - Width of Operand, recognized every iteration
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PIterator - The pointer to inconsistency tags
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StackPtr - The pointer to the evaluation stack
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Returns:
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TRUE - If value is valid
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FALSE - If value is not valid
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--*/
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{
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BOOLEAN Operator;
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BOOLEAN Operator2;
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UINT16 *MapBuffer;
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UINT16 *MapBuffer2;
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UINT16 MapValue;
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UINT16 MapValue2;
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UINTN SizeOfVariable;
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CHAR16 VariableName[MAXIMUM_VALUE_CHARACTERS];
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VOID *VariableData;
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EFI_VARIABLE_DEFINITION *VariableDefinition;
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EFI_STATUS Status;
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UINTN Index;
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BOOLEAN PushValue;
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Operator = FALSE;
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Operator2 = FALSE;
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MapBuffer = NULL;
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MapBuffer2 = NULL;
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MapValue = 0;
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MapValue2 = 0;
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VariableData = NULL;
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while (TRUE) {
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if ((*PIterator)->Operand == 0) {
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return;
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}
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Width = (*PIterator)->Width;
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//
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// Because INVALID_OFFSET_VALUE - 1 is reserved for TRUE or FALSE, omit them.
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//
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if ((*PIterator)->QuestionId1 != INVALID_OFFSET_VALUE &&
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(*PIterator)->QuestionId1 != INVALID_OFFSET_VALUE - 1) {
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ExtractNvValue (FileFormTags, (*PIterator)->VariableNumber, Width, (*PIterator)->QuestionId1, (VOID **) &MapBuffer);
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ExtractNvValue (FileFormTags, (*PIterator)->VariableNumber2, Width, (*PIterator)->QuestionId2, (VOID **) &MapBuffer2);
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if (MapBuffer != NULL) {
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if (Width == 2) {
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MapValue = *MapBuffer;
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} else {
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MapValue = (UINT8) *MapBuffer;
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}
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FreePool (MapBuffer);
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}
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if (MapBuffer2 != NULL) {
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if (Width == 2) {
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MapValue2 = *MapBuffer2;
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} else {
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MapValue2 = (UINT8) *MapBuffer2;
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}
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FreePool (MapBuffer2);
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}
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}
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switch ((*PIterator)->Operand) {
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case EFI_IFR_EQ_VAR_VAL_OP:
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UnicodeValueToString (
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VariableName,
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FALSE,
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(UINTN) (*PIterator)->QuestionId1,
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(sizeof (VariableName) / sizeof (VariableName[0])) - 1
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);
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SizeOfVariable = 0;
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ExtractRequestedNvMap (FileFormTags, (*PIterator)->VariableNumber, &VariableDefinition);
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Status = BooleanVariableWorker (
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VariableName,
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VariableDefinition,
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*StackPtr,
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&SizeOfVariable,
|
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&VariableData
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);
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if (!EFI_ERROR (Status)) {
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if (SizeOfVariable == 1) {
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CopyMem (&MapValue, VariableData, 1);
|
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} else {
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CopyMem (&MapValue, VariableData, 2);
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}
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//
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// Do operation after knowing the compare operator.
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//
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MapValue2 = (*PIterator)->Value;
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(*PIterator)++;
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if ((*PIterator)->Operand == EFI_IFR_GT_OP) {
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PushValue = (BOOLEAN) (MapValue > MapValue2);
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} else if ((*PIterator)->Operand == EFI_IFR_GE_OP) {
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PushValue = (BOOLEAN) (MapValue >= MapValue2);
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} else {
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(*PIterator)--;
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PushValue = (BOOLEAN) (MapValue == MapValue2);
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}
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PushBool (StackPtr, PushValue);
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}
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break;
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case EFI_IFR_EQ_ID_VAL_OP:
|
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//
|
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// Do operation after knowing the compare operator.
|
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//
|
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MapValue2 = (*PIterator)->Value;
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(*PIterator)++;
|
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if ((*PIterator)->Operand == EFI_IFR_GT_OP) {
|
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PushValue = (BOOLEAN) (MapValue > MapValue2);
|
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} else if ((*PIterator)->Operand == EFI_IFR_GE_OP) {
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PushValue = (BOOLEAN) (MapValue >= MapValue2);
|
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} else {
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(*PIterator)--;
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PushValue = (BOOLEAN) (MapValue == MapValue2);
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}
|
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PushBool (StackPtr, PushValue);
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break;
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case EFI_IFR_EQ_ID_ID_OP:
|
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//
|
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// Do operation after knowing the compare operator.
|
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//
|
|
(*PIterator)++;
|
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if ((*PIterator)->Operand == EFI_IFR_GT_OP) {
|
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PushValue = (BOOLEAN) (MapValue > MapValue2);
|
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} else if ((*PIterator)->Operand == EFI_IFR_GE_OP) {
|
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PushValue = (BOOLEAN) (MapValue >= MapValue2);
|
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} else {
|
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(*PIterator)--;
|
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PushValue = (BOOLEAN) (MapValue == MapValue2);
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}
|
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PushBool (StackPtr, PushValue);
|
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break;
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|
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case EFI_IFR_EQ_ID_LIST_OP:
|
|
for (Index = 0; Index < (*PIterator)->ListLength; Index++) {
|
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Operator = (BOOLEAN) (MapValue == (*PIterator)->ValueList[Index]);
|
|
if (Operator) {
|
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break;
|
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}
|
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}
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|
|
PushBool (StackPtr, Operator);
|
|
break;
|
|
|
|
case EFI_IFR_TRUE_OP:
|
|
PushBool (StackPtr, TRUE);
|
|
break;
|
|
|
|
case EFI_IFR_FALSE_OP:
|
|
PushBool (StackPtr, FALSE);
|
|
break;
|
|
|
|
case EFI_IFR_AND_OP:
|
|
Operator = PopBool (StackPtr);
|
|
Operator2 = PopBool (StackPtr);
|
|
PushBool (StackPtr, (BOOLEAN) (Operator && Operator2));
|
|
break;
|
|
case EFI_IFR_OR_OP:
|
|
Operator = PopBool (StackPtr);
|
|
Operator2 = PopBool (StackPtr);
|
|
PushBool (StackPtr, (BOOLEAN) (Operator || Operator2));
|
|
break;
|
|
case EFI_IFR_NOT_OP:
|
|
Operator = PopBool (StackPtr);
|
|
PushBool (StackPtr, (BOOLEAN) (!Operator));
|
|
break;
|
|
|
|
case EFI_IFR_SUPPRESS_IF_OP:
|
|
case EFI_IFR_GRAYOUT_IF_OP:
|
|
case EFI_IFR_INCONSISTENT_IF_OP:
|
|
default:
|
|
//
|
|
// Return to the previous tag if runs out of boolean expression.
|
|
//
|
|
(*PIterator)--;
|
|
return;
|
|
}
|
|
(*PIterator)++;
|
|
}
|
|
}
|
|
|
|
BOOLEAN
|
|
ValueIsNotValid (
|
|
IN BOOLEAN Complex,
|
|
IN UINT16 Value,
|
|
IN EFI_TAG *Tag,
|
|
IN EFI_FILE_FORM_TAGS *FileFormTags,
|
|
IN STRING_REF *PopUp
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
|
|
Arguments:
|
|
|
|
Returns:
|
|
|
|
TRUE - If value is valid
|
|
|
|
FALSE - If value is not valid
|
|
|
|
--*/
|
|
{
|
|
BOOLEAN *StackPtr;
|
|
EFI_INCONSISTENCY_DATA *Iterator;
|
|
BOOLEAN Operator;
|
|
BOOLEAN Operator2;
|
|
UINTN Index;
|
|
VOID *BooleanExpression;
|
|
UINTN BooleanExpressionLength;
|
|
BOOLEAN NotOperator;
|
|
BOOLEAN OrOperator;
|
|
BOOLEAN AndOperator;
|
|
BOOLEAN ArtificialEnd;
|
|
UINT16 *MapBuffer;
|
|
UINT16 *MapBuffer2;
|
|
UINT16 MapValue;
|
|
UINT16 MapValue2;
|
|
UINTN SizeOfVariable;
|
|
CHAR16 VariableName[MAXIMUM_VALUE_CHARACTERS];
|
|
VOID *VariableData;
|
|
EFI_STATUS Status;
|
|
UINT16 Id;
|
|
UINT16 Width;
|
|
EFI_VARIABLE_DEFINITION *VariableDefinition;
|
|
BOOLEAN CosmeticConsistency;
|
|
UINT8 IsLegacy;
|
|
|
|
VariableData = NULL;
|
|
BooleanExpressionLength = 0;
|
|
BooleanExpression = NULL;
|
|
Operator = FALSE;
|
|
ArtificialEnd = FALSE;
|
|
CosmeticConsistency = TRUE;
|
|
IsLegacy = 0;
|
|
|
|
Id = Tag->Id;
|
|
if (Tag->StorageWidth == 1) {
|
|
Width = 1;
|
|
} else {
|
|
Width = 2;
|
|
}
|
|
CreateBooleanExpression (FileFormTags, Value, Id, Complex, &BooleanExpression, &BooleanExpressionLength);
|
|
|
|
if (mBooleanEvaluationStack == 0) {
|
|
InitializeBooleanEvaluator ();
|
|
}
|
|
|
|
if (BooleanExpression == NULL) {
|
|
return FALSE;
|
|
}
|
|
|
|
StackPtr = mBooleanEvaluationStack;
|
|
Iterator = BooleanExpression;
|
|
MapBuffer = NULL;
|
|
MapBuffer2 = NULL;
|
|
MapValue = 0;
|
|
MapValue2 = 0;
|
|
|
|
while (TRUE) {
|
|
NotOperator = FALSE;
|
|
OrOperator = FALSE;
|
|
AndOperator = FALSE;
|
|
|
|
if (Iterator->Operand == 0) {
|
|
return Operator;
|
|
}
|
|
|
|
//
|
|
// Because INVALID_OFFSET_VALUE - 1 is reserved for TRUE or FALSE, omit them.
|
|
//
|
|
if (Iterator->QuestionId1 != INVALID_OFFSET_VALUE &&
|
|
Iterator->QuestionId1 != INVALID_OFFSET_VALUE-1) {
|
|
ExtractNvValue (FileFormTags, Iterator->VariableNumber, Width, Iterator->QuestionId1, (VOID **) &MapBuffer);
|
|
ExtractNvValue (FileFormTags, Iterator->VariableNumber2, Width, Iterator->QuestionId2, (VOID **) &MapBuffer2);
|
|
if (MapBuffer != NULL) {
|
|
if (Width == 2) {
|
|
MapValue = *MapBuffer;
|
|
} else {
|
|
MapValue = (UINT8) *MapBuffer;
|
|
}
|
|
|
|
FreePool (MapBuffer);
|
|
}
|
|
|
|
if (MapBuffer2 != NULL) {
|
|
if (Width == 2) {
|
|
MapValue2 = *MapBuffer2;
|
|
} else {
|
|
MapValue2 = (UINT8) *MapBuffer2;
|
|
}
|
|
|
|
FreePool (MapBuffer2);
|
|
}
|
|
}
|
|
|
|
switch (Iterator->Operand) {
|
|
case EFI_IFR_SUPPRESS_IF_OP:
|
|
//
|
|
// Must have hit a suppress followed by a grayout or vice-versa
|
|
//
|
|
if (ArtificialEnd) {
|
|
ArtificialEnd = FALSE;
|
|
Operator = PopBool (&StackPtr);
|
|
if (Operator) {
|
|
Tag->Suppress = TRUE;
|
|
}
|
|
|
|
return Operator;
|
|
}
|
|
|
|
ArtificialEnd = TRUE;
|
|
*PopUp = Iterator->Popup;
|
|
break;
|
|
|
|
case EFI_IFR_GRAYOUT_IF_OP:
|
|
//
|
|
// Must have hit a suppress followed by a grayout or vice-versa
|
|
//
|
|
if (ArtificialEnd) {
|
|
ArtificialEnd = FALSE;
|
|
Operator = PopBool (&StackPtr);
|
|
if (Operator) {
|
|
Tag->GrayOut = TRUE;
|
|
}
|
|
|
|
return Operator;
|
|
}
|
|
|
|
ArtificialEnd = TRUE;
|
|
*PopUp = Iterator->Popup;
|
|
break;
|
|
|
|
case EFI_IFR_INCONSISTENT_IF_OP:
|
|
CosmeticConsistency = FALSE;
|
|
*PopUp = Iterator->Popup;
|
|
break;
|
|
|
|
//
|
|
// In the case of external variable values, we must read the variable which is
|
|
// named by the human readable version of the OpCode->VariableId and the guid of the formset
|
|
//
|
|
case EFI_IFR_EQ_VAR_VAL_OP:
|
|
//
|
|
// To check whether Ifr is legacy. Once every boolean expression.
|
|
//
|
|
if (IsLegacy == 0) {
|
|
IsLegacy = PredicateIfrType (Iterator);
|
|
}
|
|
if (IsLegacy == 0x2) {
|
|
PostOrderEvaluate (FileFormTags, Width, &Iterator, &StackPtr);
|
|
break;
|
|
}
|
|
|
|
UnicodeValueToString (
|
|
VariableName,
|
|
FALSE,
|
|
(UINTN) Iterator->QuestionId1,
|
|
(sizeof (VariableName) / sizeof (VariableName[0])) - 1
|
|
);
|
|
|
|
SizeOfVariable = 0;
|
|
|
|
ExtractRequestedNvMap (FileFormTags, Iterator->VariableNumber, &VariableDefinition);
|
|
|
|
Status = BooleanVariableWorker (
|
|
VariableName,
|
|
VariableDefinition,
|
|
StackPtr,
|
|
&SizeOfVariable,
|
|
&VariableData
|
|
);
|
|
|
|
if (!EFI_ERROR (Status)) {
|
|
if (SizeOfVariable == 1) {
|
|
CopyMem (&MapValue, VariableData, 1);
|
|
} else {
|
|
CopyMem (&MapValue, VariableData, 2);
|
|
}
|
|
|
|
PushBool (&StackPtr, (BOOLEAN) (MapValue == Iterator->Value));
|
|
}
|
|
|
|
break;
|
|
|
|
case EFI_IFR_EQ_ID_VAL_OP:
|
|
//
|
|
// To check whether Ifr is legacy. Once every boolean expression.
|
|
//
|
|
if (IsLegacy == 0) {
|
|
IsLegacy = PredicateIfrType (Iterator);
|
|
}
|
|
if (IsLegacy == 0x2) {
|
|
PostOrderEvaluate (FileFormTags, Width, &Iterator, &StackPtr);
|
|
break;
|
|
}
|
|
|
|
PushBool (&StackPtr, (BOOLEAN) (MapValue == Iterator->Value));
|
|
break;
|
|
|
|
case EFI_IFR_EQ_ID_ID_OP:
|
|
//
|
|
// To check whether Ifr is legacy. Once every boolean expression.
|
|
//
|
|
if (IsLegacy == 0) {
|
|
IsLegacy = PredicateIfrType (Iterator);
|
|
}
|
|
if (IsLegacy == 0x2) {
|
|
PostOrderEvaluate (FileFormTags, Width, &Iterator, &StackPtr);
|
|
break;
|
|
}
|
|
|
|
PushBool (&StackPtr, (BOOLEAN) (MapValue == MapValue2));
|
|
break;
|
|
|
|
case EFI_IFR_EQ_ID_LIST_OP:
|
|
//
|
|
// To check whether Ifr is legacy. Once every boolean expression.
|
|
//
|
|
if (IsLegacy == 0) {
|
|
IsLegacy = PredicateIfrType (Iterator);
|
|
}
|
|
if (IsLegacy == 0x2) {
|
|
PostOrderEvaluate (FileFormTags, Width, &Iterator, &StackPtr);
|
|
break;
|
|
}
|
|
|
|
for (Index = 0; Index < Iterator->ListLength; Index++) {
|
|
Operator = (BOOLEAN) (MapValue == Iterator->ValueList[Index]);
|
|
if (Operator) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
PushBool (&StackPtr, Operator);
|
|
break;
|
|
|
|
case EFI_IFR_AND_OP:
|
|
Iterator++;
|
|
if (Iterator->Operand == EFI_IFR_NOT_OP) {
|
|
NotOperator = TRUE;
|
|
Iterator++;
|
|
}
|
|
|
|
if (Iterator->QuestionId1 != INVALID_OFFSET_VALUE) {
|
|
ExtractNvValue (FileFormTags, Iterator->VariableNumber, Width, Iterator->QuestionId1, (VOID **) &MapBuffer);
|
|
ExtractNvValue (FileFormTags, Iterator->VariableNumber2, Width, Iterator->QuestionId2, (VOID **) &MapBuffer2);
|
|
if (MapBuffer != NULL) {
|
|
if (Width == 2) {
|
|
MapValue = *MapBuffer;
|
|
} else {
|
|
MapValue = (UINT8) *MapBuffer;
|
|
}
|
|
|
|
FreePool (MapBuffer);
|
|
}
|
|
|
|
if (MapBuffer2 != NULL) {
|
|
if (Width == 2) {
|
|
MapValue2 = *MapBuffer2;
|
|
} else {
|
|
MapValue2 = (UINT8) *MapBuffer2;
|
|
}
|
|
|
|
FreePool (MapBuffer2);
|
|
}
|
|
}
|
|
|
|
switch (Iterator->Operand) {
|
|
case EFI_IFR_EQ_ID_VAL_OP:
|
|
//
|
|
// If Not - flip the results
|
|
//
|
|
if (NotOperator) {
|
|
Operator = (BOOLEAN)!(MapValue == Iterator->Value);
|
|
} else {
|
|
Operator = (BOOLEAN) (MapValue == Iterator->Value);
|
|
}
|
|
|
|
PushBool (&StackPtr, Operator);
|
|
break;
|
|
|
|
//
|
|
// In the case of external variable values, we must read the variable which is
|
|
// named by the human readable version of the OpCode->VariableId and the guid of the formset
|
|
//
|
|
case EFI_IFR_EQ_VAR_VAL_OP:
|
|
UnicodeValueToString (
|
|
VariableName,
|
|
FALSE,
|
|
(UINTN) Iterator->QuestionId1,
|
|
(sizeof (VariableName) / sizeof (VariableName[0])) - 1
|
|
);
|
|
|
|
SizeOfVariable = 0;
|
|
|
|
ExtractRequestedNvMap (FileFormTags, Iterator->VariableNumber, &VariableDefinition);
|
|
|
|
Status = BooleanVariableWorker (
|
|
VariableName,
|
|
VariableDefinition,
|
|
StackPtr,
|
|
&SizeOfVariable,
|
|
&VariableData
|
|
);
|
|
|
|
if (!EFI_ERROR (Status)) {
|
|
if (SizeOfVariable == 1) {
|
|
CopyMem (&MapValue, VariableData, 1);
|
|
} else {
|
|
CopyMem (&MapValue, VariableData, 2);
|
|
}
|
|
//
|
|
// If Not - flip the results
|
|
//
|
|
if (NotOperator) {
|
|
PushBool (&StackPtr, (BOOLEAN)!(MapValue == Iterator->Value));
|
|
} else {
|
|
PushBool (&StackPtr, (BOOLEAN) (MapValue == Iterator->Value));
|
|
}
|
|
}
|
|
break;
|
|
|
|
case EFI_IFR_EQ_ID_ID_OP:
|
|
//
|
|
// If Not - flip the results
|
|
//
|
|
if (NotOperator) {
|
|
Operator = (BOOLEAN)!(MapValue == MapValue2);
|
|
} else {
|
|
Operator = (BOOLEAN) (MapValue == MapValue2);
|
|
}
|
|
|
|
PushBool (&StackPtr, Operator);
|
|
break;
|
|
|
|
case EFI_IFR_EQ_ID_LIST_OP:
|
|
for (Index = 0; Index < Iterator->ListLength; Index++) {
|
|
//
|
|
// If Not - flip the results
|
|
//
|
|
if (NotOperator) {
|
|
Operator = (BOOLEAN)!(MapValue == Iterator->ValueList[Index]);
|
|
} else {
|
|
Operator = (BOOLEAN) (MapValue == Iterator->ValueList[Index]);
|
|
}
|
|
//
|
|
// If We are trying to make sure that MapValue != Item[x], keep looking through
|
|
// the list to make sure we don't equal any other items
|
|
//
|
|
if (Operator && NotOperator) {
|
|
continue;
|
|
}
|
|
//
|
|
// If MapValue == Item, then we have succeeded (first found is good enough)
|
|
//
|
|
if (Operator) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
PushBool (&StackPtr, Operator);
|
|
break;
|
|
|
|
default:
|
|
return FALSE;
|
|
}
|
|
|
|
Operator = PopBool (&StackPtr);
|
|
Operator2 = PopBool (&StackPtr);
|
|
PushBool (&StackPtr, (BOOLEAN) (Operator && Operator2));
|
|
break;
|
|
|
|
case EFI_IFR_OR_OP:
|
|
Iterator++;
|
|
if (Iterator->Operand == EFI_IFR_NOT_OP) {
|
|
NotOperator = TRUE;
|
|
Iterator++;
|
|
}
|
|
|
|
if (Iterator->QuestionId1 != INVALID_OFFSET_VALUE) {
|
|
ExtractNvValue (FileFormTags, Iterator->VariableNumber, Width, Iterator->QuestionId1, (VOID **) &MapBuffer);
|
|
ExtractNvValue (FileFormTags, Iterator->VariableNumber2, Width, Iterator->QuestionId2, (VOID **) &MapBuffer2);
|
|
if (MapBuffer != NULL) {
|
|
if (Width == 2) {
|
|
MapValue = *MapBuffer;
|
|
} else {
|
|
MapValue = (UINT8) *MapBuffer;
|
|
}
|
|
|
|
FreePool (MapBuffer);
|
|
}
|
|
|
|
if (MapBuffer2 != NULL) {
|
|
if (Width == 2) {
|
|
MapValue2 = *MapBuffer2;
|
|
} else {
|
|
MapValue2 = (UINT8) *MapBuffer2;
|
|
}
|
|
|
|
FreePool (MapBuffer2);
|
|
}
|
|
}
|
|
|
|
switch (Iterator->Operand) {
|
|
case EFI_IFR_EQ_ID_VAL_OP:
|
|
//
|
|
// If Not - flip the results
|
|
//
|
|
if (NotOperator) {
|
|
Operator = (BOOLEAN)!(MapValue == Iterator->Value);
|
|
} else {
|
|
Operator = (BOOLEAN) (MapValue == Iterator->Value);
|
|
}
|
|
|
|
PushBool (&StackPtr, Operator);
|
|
break;
|
|
|
|
//
|
|
// In the case of external variable values, we must read the variable which is
|
|
// named by the human readable version of the OpCode->VariableId and the guid of the formset
|
|
//
|
|
case EFI_IFR_EQ_VAR_VAL_OP:
|
|
UnicodeValueToString (
|
|
VariableName,
|
|
FALSE,
|
|
(UINTN) Iterator->QuestionId1,
|
|
(sizeof (VariableName) / sizeof (VariableName[0])) - 1
|
|
);
|
|
|
|
SizeOfVariable = 0;
|
|
|
|
ExtractRequestedNvMap (FileFormTags, Iterator->VariableNumber, &VariableDefinition);
|
|
|
|
Status = BooleanVariableWorker (
|
|
VariableName,
|
|
VariableDefinition,
|
|
StackPtr,
|
|
&SizeOfVariable,
|
|
&VariableData
|
|
);
|
|
|
|
if (!EFI_ERROR (Status)) {
|
|
if (SizeOfVariable == 1) {
|
|
CopyMem (&MapValue, VariableData, 1);
|
|
} else {
|
|
CopyMem (&MapValue, VariableData, 2);
|
|
}
|
|
//
|
|
// If Not - flip the results
|
|
//
|
|
if (NotOperator) {
|
|
PushBool (&StackPtr, (BOOLEAN)!(MapValue == Iterator->Value));
|
|
} else {
|
|
PushBool (&StackPtr, (BOOLEAN) (MapValue == Iterator->Value));
|
|
}
|
|
}
|
|
break;
|
|
|
|
case EFI_IFR_EQ_ID_ID_OP:
|
|
//
|
|
// If Not - flip the results
|
|
//
|
|
if (NotOperator) {
|
|
Operator = (BOOLEAN)!(MapValue == MapValue2);
|
|
} else {
|
|
Operator = (BOOLEAN) (MapValue == MapValue2);
|
|
}
|
|
|
|
PushBool (&StackPtr, Operator);
|
|
break;
|
|
|
|
case EFI_IFR_EQ_ID_LIST_OP:
|
|
for (Index = 0; Index < Iterator->ListLength; Index++) {
|
|
//
|
|
// If Not - flip the results
|
|
//
|
|
if (NotOperator) {
|
|
Operator = (BOOLEAN)!(MapValue == Iterator->ValueList[Index]);
|
|
} else {
|
|
Operator = (BOOLEAN) (MapValue == Iterator->ValueList[Index]);
|
|
}
|
|
//
|
|
// If We are trying to make sure that MapValue != Item[x], keep looking through
|
|
// the list to make sure we don't equal any other items
|
|
//
|
|
if (Operator && NotOperator) {
|
|
continue;
|
|
}
|
|
//
|
|
// If MapValue == Item, then we have succeeded (first found is good enough)
|
|
//
|
|
if (Operator) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
PushBool (&StackPtr, Operator);
|
|
break;
|
|
|
|
default:
|
|
return FALSE;
|
|
}
|
|
|
|
Operator = PopBool (&StackPtr);
|
|
Operator2 = PopBool (&StackPtr);
|
|
PushBool (&StackPtr, (BOOLEAN) (Operator || Operator2));
|
|
break;
|
|
|
|
case EFI_IFR_NOT_OP:
|
|
//
|
|
// To check whether Ifr is legacy. Once every boolean expression.
|
|
//
|
|
if (IsLegacy == 0) {
|
|
IsLegacy = PredicateIfrType (Iterator);
|
|
}
|
|
if (IsLegacy == 0x2) {
|
|
PostOrderEvaluate (FileFormTags, Width, &Iterator, &StackPtr);
|
|
break;
|
|
}
|
|
|
|
//
|
|
// I don't need to set the NotOperator (I know that I have to NOT this in this case
|
|
//
|
|
Iterator++;
|
|
|
|
if (Iterator->Operand == EFI_IFR_OR_OP) {
|
|
OrOperator = TRUE;
|
|
Iterator++;
|
|
}
|
|
|
|
if (Iterator->Operand == EFI_IFR_AND_OP) {
|
|
AndOperator = TRUE;
|
|
Iterator++;
|
|
}
|
|
|
|
if (Iterator->QuestionId1 != INVALID_OFFSET_VALUE) {
|
|
ExtractNvValue (FileFormTags, Iterator->VariableNumber, Width, Iterator->QuestionId1, (VOID **) &MapBuffer);
|
|
ExtractNvValue (FileFormTags, Iterator->VariableNumber2, Width, Iterator->QuestionId2, (VOID **) &MapBuffer2);
|
|
if (MapBuffer != NULL) {
|
|
if (Width == 2) {
|
|
MapValue = *MapBuffer;
|
|
} else {
|
|
MapValue = (UINT8) *MapBuffer;
|
|
}
|
|
|
|
FreePool (MapBuffer);
|
|
}
|
|
|
|
if (MapBuffer2 != NULL) {
|
|
if (Width == 2) {
|
|
MapValue2 = *MapBuffer2;
|
|
} else {
|
|
MapValue2 = (UINT8) *MapBuffer2;
|
|
}
|
|
|
|
FreePool (MapBuffer2);
|
|
}
|
|
}
|
|
|
|
switch (Iterator->Operand) {
|
|
case EFI_IFR_EQ_ID_VAL_OP:
|
|
Operator = (BOOLEAN)!(MapValue == Iterator->Value);
|
|
PushBool (&StackPtr, Operator);
|
|
break;
|
|
|
|
//
|
|
// In the case of external variable values, we must read the variable which is
|
|
// named by the human readable version of the OpCode->VariableId and the guid of the formset
|
|
//
|
|
case EFI_IFR_EQ_VAR_VAL_OP:
|
|
UnicodeValueToString (
|
|
VariableName,
|
|
FALSE,
|
|
(UINTN) Iterator->QuestionId1,
|
|
(sizeof (VariableName) / sizeof (VariableName[0])) - 1
|
|
);
|
|
|
|
SizeOfVariable = 0;
|
|
|
|
ExtractRequestedNvMap (FileFormTags, Iterator->VariableNumber, &VariableDefinition);
|
|
|
|
Status = BooleanVariableWorker (
|
|
VariableName,
|
|
VariableDefinition,
|
|
StackPtr,
|
|
&SizeOfVariable,
|
|
&VariableData
|
|
);
|
|
|
|
if (!EFI_ERROR (Status)) {
|
|
if (SizeOfVariable == 1) {
|
|
CopyMem (&MapValue, VariableData, 1);
|
|
} else {
|
|
CopyMem (&MapValue, VariableData, 2);
|
|
}
|
|
|
|
PushBool (&StackPtr, (BOOLEAN)!(MapValue == Iterator->Value));
|
|
}
|
|
break;
|
|
|
|
case EFI_IFR_EQ_ID_ID_OP:
|
|
Operator = (BOOLEAN)!(MapValue == MapValue2);
|
|
PushBool (&StackPtr, Operator);
|
|
break;
|
|
|
|
case EFI_IFR_EQ_ID_LIST_OP:
|
|
for (Index = 0; Index < Iterator->ListLength; Index++) {
|
|
Operator = (BOOLEAN)!(MapValue == Iterator->ValueList[Index]);
|
|
if (Operator) {
|
|
continue;
|
|
}
|
|
}
|
|
|
|
PushBool (&StackPtr, Operator);
|
|
break;
|
|
|
|
default:
|
|
return FALSE;
|
|
}
|
|
|
|
Operator = PopBool (&StackPtr);
|
|
Operator2 = PopBool (&StackPtr);
|
|
|
|
if (OrOperator) {
|
|
PushBool (&StackPtr, (BOOLEAN) (Operator || Operator2));
|
|
}
|
|
|
|
if (AndOperator) {
|
|
PushBool (&StackPtr, (BOOLEAN) (Operator && Operator2));
|
|
}
|
|
|
|
if (!OrOperator && !AndOperator) {
|
|
PushBool (&StackPtr, Operator);
|
|
}
|
|
break;
|
|
|
|
case EFI_IFR_TRUE_OP:
|
|
//
|
|
// To check whether Ifr is legacy. Once every boolean expression.
|
|
//
|
|
if (IsLegacy == 0) {
|
|
IsLegacy = PredicateIfrType (Iterator);
|
|
}
|
|
if (IsLegacy == 0x2) {
|
|
PostOrderEvaluate (FileFormTags, Width, &Iterator, &StackPtr);
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case EFI_IFR_FALSE_OP:
|
|
//
|
|
// To check whether Ifr is legacy. Once every boolean expression.
|
|
//
|
|
if (IsLegacy == 0) {
|
|
IsLegacy = PredicateIfrType (Iterator);
|
|
}
|
|
if (IsLegacy == 0x2) {
|
|
PostOrderEvaluate (FileFormTags, Width, &Iterator, &StackPtr);
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case EFI_IFR_END_IF_OP:
|
|
Operator = PopBool (&StackPtr);
|
|
//
|
|
// If there is an error, return, otherwise keep looking - there might
|
|
// be another test that causes an error
|
|
//
|
|
if (Operator) {
|
|
if (Complex && CosmeticConsistency) {
|
|
return EFI_SUCCESS;
|
|
} else {
|
|
return Operator;
|
|
}
|
|
} else {
|
|
//
|
|
// If not doing a global consistency check, the endif is the REAL terminator of this operation
|
|
// This is used for grayout/suppress operations. InconsistentIf is a global operation so the EndIf is
|
|
// not the end-all be-all of terminators.
|
|
//
|
|
if (!Complex) {
|
|
return Operator;
|
|
}
|
|
break;
|
|
}
|
|
|
|
default:
|
|
//
|
|
// Must have hit a non-consistency related op-code after a suppress/grayout
|
|
//
|
|
if (ArtificialEnd) {
|
|
ArtificialEnd = FALSE;
|
|
Operator = PopBool (&StackPtr);
|
|
return Operator;
|
|
}
|
|
|
|
goto Done;
|
|
}
|
|
|
|
Iterator++;
|
|
}
|
|
|
|
Done:
|
|
return FALSE;
|
|
}
|