Code scrub for the Capsule, SecurityStub, and Crc32 library instance.
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5441 6f19259b-4bc3-4df7-8a09-765794883524
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@@ -27,6 +27,21 @@ typedef struct {
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UINT32 CRC32Checksum;
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} CRC32_SECTION_HEADER;
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/**
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The implementation of Crc32 guided section GetInfo() to get
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size and attribute of the guided section.
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@param InputSection Buffer containing the input GUIDed section to be processed.
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@param OutputBufferSize The size of OutputBuffer.
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@param ScratchBufferSize The size of ScratchBuffer.
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@param SectionAttribute The attribute of the input guided section.
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@retval EFI_SUCCESS The size of destination buffer, the size of scratch buffer and
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the attribute of the input section are successull retrieved.
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@retval EFI_INVALID_PARAMETER The GUID in InputSection does not match this instance guid.
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**/
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EFI_STATUS
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EFIAPI
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Crc32GuidedSectionGetInfo (
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@@ -35,26 +50,10 @@ Crc32GuidedSectionGetInfo (
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OUT UINT32 *ScratchBufferSize,
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OUT UINT16 *SectionAttribute
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)
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/*++
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Routine Description:
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The implementation of Crc32 guided section GetInfo().
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Arguments:
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InputSection Buffer containing the input GUIDed section to be processed.
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OutputBufferSize The size of OutputBuffer.
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ScratchBufferSize The size of ScratchBuffer.
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SectionAttribute The attribute of the input guided section.
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Returns:
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EFI_SUCCESS - The size of destination buffer and the size of scratch buffer are successull retrieved.
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EFI_INVALID_PARAMETER - The source data is corrupted, or
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The GUID in InputSection does not match this instance guid.
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--*/
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{
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//
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// Check whether the input guid section is recognized.
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//
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if (!CompareGuid (
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&gEfiCrc32GuidedSectionExtractionProtocolGuid,
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&(((EFI_GUID_DEFINED_SECTION *) InputSection)->SectionDefinitionGuid))) {
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@@ -71,6 +70,20 @@ Returns:
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return EFI_SUCCESS;
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}
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/**
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The implementation of Crc32 Guided section extraction to get the section data.
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@param InputSection Buffer containing the input GUIDed section to be processed.
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@param OutputBuffer to contain the output data, which is allocated by the caller.
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@param ScratchBuffer A pointer to a caller-allocated buffer for function internal use.
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@param AuthenticationStatus A pointer to a caller-allocated UINT32 that indicates the
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authentication status of the output buffer.
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@retval EFI_SUCCESS Section Data and Auth Status is extracted successfully.
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@retval EFI_INVALID_PARAMETER The GUID in InputSection does not match this instance guid.
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**/
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EFI_STATUS
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EFIAPI
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Crc32GuidedSectionHandler (
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@@ -79,28 +92,6 @@ Crc32GuidedSectionHandler (
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IN VOID *ScratchBuffer, OPTIONAL
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OUT UINT32 *AuthenticationStatus
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)
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/*++
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Routine Description:
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The implementation of Crc32 Guided section extraction.
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Arguments:
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InputSection Buffer containing the input GUIDed section to be processed.
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OutputBuffer OutputBuffer to point to the start of the section's contents.
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if guided data is not prcessed. Otherwise,
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OutputBuffer to contain the output data, which is allocated by the caller.
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ScratchBuffer A pointer to a caller-allocated buffer for function internal use.
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AuthenticationStatus A pointer to a caller-allocated UINT32 that indicates the
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authentication status of the output buffer.
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Returns:
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RETURN_SUCCESS - Decompression is successfull
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RETURN_INVALID_PARAMETER - The source data is corrupted, or
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The GUID in InputSection does not match this instance guid.
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--*/
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{
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EFI_STATUS Status;
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CRC32_SECTION_HEADER *Crc32SectionHeader;
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@@ -108,12 +99,18 @@ Returns:
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UINT32 OutputBufferSize;
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VOID *DummyInterface;
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//
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// Check whether the input guid section is recognized.
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//
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if (!CompareGuid (
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&gEfiCrc32GuidedSectionExtractionProtocolGuid,
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&(((EFI_GUID_DEFINED_SECTION *) InputSection)->SectionDefinitionGuid))) {
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return EFI_INVALID_PARAMETER;
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}
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//
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// Init Checksum value to Zero.
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//
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Crc32Checksum = 0;
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//
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// Points to the Crc32 section header
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@@ -134,6 +131,9 @@ Returns:
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//
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Status = gBS->LocateProtocol (&gEfiSecurityPolicyProtocolGuid, NULL, &DummyInterface);
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if (!EFI_ERROR (Status)) {
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//
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// If SecurityPolicy Protocol exist, AUTH platform override bit is set.
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//
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*AuthenticationStatus |= EFI_AUTH_STATUS_PLATFORM_OVERRIDE;
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} else {
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//
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@@ -142,9 +142,15 @@ Returns:
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Status = gBS->CalculateCrc32 (*OutputBuffer, OutputBufferSize, &Crc32Checksum);
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if (Status == EFI_SUCCESS) {
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if (Crc32Checksum != Crc32SectionHeader->CRC32Checksum) {
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//
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// If Crc32 checksum is not matched, AUTH tested failed bit is set.
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//
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*AuthenticationStatus |= EFI_AUTH_STATUS_TEST_FAILED;
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}
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} else {
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//
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// If Crc32 checksum is not calculated, AUTH not tested bit is set.
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//
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*AuthenticationStatus |= EFI_AUTH_STATUS_NOT_TESTED;
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}
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}
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@@ -152,11 +158,11 @@ Returns:
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return EFI_SUCCESS;
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}
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/**
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/**
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Register Crc32 section handler.
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@retval RETURN_SUCCESS Register successfully.
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@retval RETURN_OUT_OF_RESOURCES No enough memory to store this handler.
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@retval RETURN_OUT_OF_RESOURCES No enough memory to register this handler.
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**/
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EFI_STATUS
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EFIAPI
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@@ -1,7 +1,7 @@
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#/** @file
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# Component description file for Crc32SectionExtract library.
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# Crc32SectionExtract library instance registers Crc32 handler into ExtractGuidedSectionLib.
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#
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# Copyright (c) 2006 - 2007, Intel Corporation
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# Copyright (c) 2006 - 2008, Intel Corporation
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#
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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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@@ -19,6 +19,7 @@
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FILE_GUID = 387A2490-81FC-4E7C-8E0A-3E58C30FCD0B
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MODULE_TYPE = DXE_DRIVER
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VERSION_STRING = 1.0
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LIBRARY_CLASS = NULL|DXE_CORE DXE_DRIVER DXE_RUNTIME_DRIVER DXE_SAL_DRIVER DXE_SMM_DRIVER UEFI_APPLICATION UEFI_DRIVER
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EDK_RELEASE_VERSION = 0x00020000
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EFI_SPECIFICATION_VERSION = 0x00020000
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