diff options
Diffstat (limited to 'src/VBox/Devices/EFI/Firmware/MdeModulePkg/Library/BrotliCustomDecompressLib/GuidedSectionExtraction.c')
| -rw-r--r-- | src/VBox/Devices/EFI/Firmware/MdeModulePkg/Library/BrotliCustomDecompressLib/GuidedSectionExtraction.c | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/src/VBox/Devices/EFI/Firmware/MdeModulePkg/Library/BrotliCustomDecompressLib/GuidedSectionExtraction.c b/src/VBox/Devices/EFI/Firmware/MdeModulePkg/Library/BrotliCustomDecompressLib/GuidedSectionExtraction.c new file mode 100644 index 00000000..d84722fb --- /dev/null +++ b/src/VBox/Devices/EFI/Firmware/MdeModulePkg/Library/BrotliCustomDecompressLib/GuidedSectionExtraction.c @@ -0,0 +1,191 @@ +/** @file + BROTLI Decompress GUIDed Section Extraction Library. + It wraps Brotli decompress interfaces to GUIDed Section Extraction interfaces + and registers them into GUIDed handler table. + + Copyright (c) 2017, Intel Corporation. All rights reserved.<BR> + SPDX-License-Identifier: BSD-2-Clause-Patent + +**/ + +#include <BrotliDecompressLibInternal.h> + +/** + Examines a GUIDed section and returns the size of the decoded buffer and the + size of an scratch buffer required to actually decode the data in a GUIDed section. + + Examines a GUIDed section specified by InputSection. + If GUID for InputSection does not match the GUID that this handler supports, + then RETURN_UNSUPPORTED is returned. + If the required information can not be retrieved from InputSection, + then RETURN_INVALID_PARAMETER is returned. + If the GUID of InputSection does match the GUID that this handler supports, + then the size required to hold the decoded buffer is returned in OututBufferSize, + the size of an optional scratch buffer is returned in ScratchSize, and the Attributes field + from EFI_GUID_DEFINED_SECTION header of InputSection is returned in SectionAttribute. + + If InputSection is NULL, then ASSERT(). + If OutputBufferSize is NULL, then ASSERT(). + If ScratchBufferSize is NULL, then ASSERT(). + If SectionAttribute is NULL, then ASSERT(). + + + @param[in] InputSection A pointer to a GUIDed section of an FFS formatted file. + @param[out] OutputBufferSize A pointer to the size, in bytes, of an output buffer required + if the buffer specified by InputSection were decoded. + @param[out] ScratchBufferSize A pointer to the size, in bytes, required as scratch space + if the buffer specified by InputSection were decoded. + @param[out] SectionAttribute A pointer to the attributes of the GUIDed section. See the Attributes + field of EFI_GUID_DEFINED_SECTION in the PI Specification. + + @retval RETURN_SUCCESS The information about InputSection was returned. + @retval RETURN_UNSUPPORTED The section specified by InputSection does not match the GUID this handler supports. + @retval RETURN_INVALID_PARAMETER The information can not be retrieved from the section specified by InputSection. + +**/ +RETURN_STATUS +EFIAPI +BrotliGuidedSectionGetInfo ( + IN CONST VOID *InputSection, + OUT UINT32 *OutputBufferSize, + OUT UINT32 *ScratchBufferSize, + OUT UINT16 *SectionAttribute + ) +{ + ASSERT (InputSection != NULL); + ASSERT (OutputBufferSize != NULL); + ASSERT (ScratchBufferSize != NULL); + ASSERT (SectionAttribute != NULL); + + if (IS_SECTION2 (InputSection)) { + if (!CompareGuid ( + &gBrotliCustomDecompressGuid, + &(((EFI_GUID_DEFINED_SECTION2 *) InputSection)->SectionDefinitionGuid))) { + return RETURN_INVALID_PARAMETER; + } + + *SectionAttribute = ((EFI_GUID_DEFINED_SECTION2 *) InputSection)->Attributes; + + return BrotliUefiDecompressGetInfo ( + (UINT8 *) InputSection + ((EFI_GUID_DEFINED_SECTION2 *) InputSection)->DataOffset, + SECTION2_SIZE (InputSection) - ((EFI_GUID_DEFINED_SECTION2 *) InputSection)->DataOffset, + OutputBufferSize, + ScratchBufferSize + ); + } else { + if (!CompareGuid ( + &gBrotliCustomDecompressGuid, + &(((EFI_GUID_DEFINED_SECTION *) InputSection)->SectionDefinitionGuid))) { + return RETURN_INVALID_PARAMETER; + } + + *SectionAttribute = ((EFI_GUID_DEFINED_SECTION *) InputSection)->Attributes; + + return BrotliUefiDecompressGetInfo ( + (UINT8 *) InputSection + ((EFI_GUID_DEFINED_SECTION *) InputSection)->DataOffset, + SECTION_SIZE (InputSection) - ((EFI_GUID_DEFINED_SECTION *) InputSection)->DataOffset, + OutputBufferSize, + ScratchBufferSize + ); + } +} + +/** + Decompress a BROTLI compressed GUIDed section into a caller allocated output buffer. + + Decodes the GUIDed section specified by InputSection. + If GUID for InputSection does not match the GUID that this handler supports, then RETURN_UNSUPPORTED is returned. + If the data in InputSection can not be decoded, then RETURN_INVALID_PARAMETER is returned. + If the GUID of InputSection does match the GUID that this handler supports, then InputSection + is decoded into the buffer specified by OutputBuffer and the authentication status of this + decode operation is returned in AuthenticationStatus. If the decoded buffer is identical to the + data in InputSection, then OutputBuffer is set to point at the data in InputSection. Otherwise, + the decoded data will be placed in caller allocated buffer specified by OutputBuffer. + + If InputSection is NULL, then ASSERT(). + If OutputBuffer is NULL, then ASSERT(). + If ScratchBuffer is NULL and this decode operation requires a scratch buffer, then ASSERT(). + If AuthenticationStatus is NULL, then ASSERT(). + + @param[in] InputSection A pointer to a GUIDed section of an FFS formatted file. + @param[out] OutputBuffer A pointer to a buffer that contains the result of a decode operation. + @param[out] ScratchBuffer A caller allocated buffer that may be required by this function + as a scratch buffer to perform the decode operation. + @param[out] AuthenticationStatus + A pointer to the authentication status of the decoded output buffer. + See the definition of authentication status in the EFI_PEI_GUIDED_SECTION_EXTRACTION_PPI + section of the PI Specification. EFI_AUTH_STATUS_PLATFORM_OVERRIDE must + never be set by this handler. + + @retval RETURN_SUCCESS The buffer specified by InputSection was decoded. + @retval RETURN_UNSUPPORTED The section specified by InputSection does not match the GUID this handler supports. + @retval RETURN_INVALID_PARAMETER The section specified by InputSection can not be decoded. + +**/ +RETURN_STATUS +EFIAPI +BrotliGuidedSectionExtraction ( + IN CONST VOID *InputSection, + OUT VOID **OutputBuffer, + OUT VOID *ScratchBuffer, OPTIONAL + OUT UINT32 *AuthenticationStatus + ) +{ + ASSERT (OutputBuffer != NULL); + ASSERT (InputSection != NULL); + + if (IS_SECTION2 (InputSection)) { + if (!CompareGuid ( + &gBrotliCustomDecompressGuid, + &(((EFI_GUID_DEFINED_SECTION2 *) InputSection)->SectionDefinitionGuid))) { + return RETURN_INVALID_PARAMETER; + } + // + // Authentication is set to Zero, which may be ignored. + // + *AuthenticationStatus = 0; + + return BrotliUefiDecompress ( + (UINT8 *) InputSection + ((EFI_GUID_DEFINED_SECTION2 *) InputSection)->DataOffset, + SECTION2_SIZE (InputSection) - ((EFI_GUID_DEFINED_SECTION2 *) InputSection)->DataOffset, + *OutputBuffer, + ScratchBuffer + ); + } else { + if (!CompareGuid ( + &gBrotliCustomDecompressGuid, + &(((EFI_GUID_DEFINED_SECTION *) InputSection)->SectionDefinitionGuid))) { + return RETURN_INVALID_PARAMETER; + } + // + // Authentication is set to Zero, which may be ignored. + // + *AuthenticationStatus = 0; + + return BrotliUefiDecompress ( + (UINT8 *) InputSection + ((EFI_GUID_DEFINED_SECTION *) InputSection)->DataOffset, + SECTION_SIZE (InputSection) - ((EFI_GUID_DEFINED_SECTION *) InputSection)->DataOffset, + *OutputBuffer, + ScratchBuffer + ); + } +} + +/** + Register BrotliDecompress and BrotliDecompressGetInfo handlers with BrotliCustomerDecompressGuid. + + @retval EFI_SUCCESS Register successfully. + @retval EFI_OUT_OF_RESOURCES No enough memory to store this handler. +**/ +EFI_STATUS +EFIAPI +BrotliDecompressLibConstructor ( + VOID + ) +{ + return ExtractGuidedSectionRegisterHandlers ( + &gBrotliCustomDecompressGuid, + BrotliGuidedSectionGetInfo, + BrotliGuidedSectionExtraction + ); +} |