20bb84ffee
This is a cherry pick of recent changes to OEMCrypto and ODK. Most of these are part of the document migration to doxygen. See http://go/wvgerrit/106005 and its parents for code reviews. Bug: 144715340 Bug: 148232693 Bug: 167580674 Change-Id: I658f99c8117b974faed97322d61fac0f382283af
90 lines
2.8 KiB
C
90 lines
2.8 KiB
C
// Copyright 2019 Google LLC. All rights reserved. This file and proprietary
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// source code may only be used and distributed under the Widevine Master
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// License Agreement.
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#ifndef WIDEVINE_ODK_SRC_SERIALIZATION_BASE_H_
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#define WIDEVINE_ODK_SRC_SERIALIZATION_BASE_H_
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#ifdef __cplusplus
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extern "C" {
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#endif
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#include <stddef.h>
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#include <stdint.h>
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#include "OEMCryptoCENCCommon.h"
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#define SIZE_OF_MESSAGE_STRUCT 64
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/*
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* Description:
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* Point |msg| to stack-array |blk|.
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* |blk| is guaranteed large enough to hold a |Message| struct.
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* |blk| cannot be used in the same scope as a variable name.
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* |msg| points to valid memory in the same scope |AllocateMessage| is used.
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* Parameters:
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* msg: pointer to pointer to |Message| struct
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* blk: variable name for stack-array
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*/
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#define AllocateMessage(msg, blk) \
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uint8_t blk[SIZE_OF_MESSAGE_STRUCT]; \
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*(msg) = (Message*)(blk)
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typedef struct _Message Message;
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typedef enum {
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MESSAGE_STATUS_OK,
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MESSAGE_STATUS_UNKNOWN_ERROR,
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MESSAGE_STATUS_OVERFLOW_ERROR,
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MESSAGE_STATUS_UNDERFLOW_ERROR,
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MESSAGE_STATUS_PARSE_ERROR,
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MESSAGE_STATUS_NULL_POINTER_ERROR,
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MESSAGE_STATUS_API_VALUE_ERROR
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} MessageStatus;
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bool ValidMessage(Message* message);
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void Pack_enum(Message* message, int value);
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void Pack_bool(Message* message, const bool* value);
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void Pack_uint16_t(Message* message, const uint16_t* value);
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void Pack_uint32_t(Message* message, const uint32_t* value);
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void Pack_uint64_t(Message* message, const uint64_t* value);
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void PackArray(Message* message, const uint8_t* base, size_t size);
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void Pack_OEMCrypto_Substring(Message* msg, const OEMCrypto_Substring* obj);
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int Unpack_enum(Message* message);
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void Unpack_bool(Message* message, bool* value);
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void Unpack_uint16_t(Message* message, uint16_t* value);
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void Unpack_uint32_t(Message* message, uint32_t* value);
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void Unpack_uint64_t(Message* message, uint64_t* value);
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void UnpackArray(Message* message, uint8_t* address,
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size_t size); /* copy out */
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void Unpack_OEMCrypto_Substring(Message* msg, OEMCrypto_Substring* obj);
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/*
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* Initialize a message structure to reference a separate buffer. The caller
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* is responsible for ensuring that the buffer remains allocated for the
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* lifetime of the message.
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*/
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void InitMessage(Message* message, uint8_t* buffer, size_t capacity);
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/*
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* Reset an existing the message to an empty state
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*/
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void ResetMessage(Message* message);
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uint8_t* GetBase(Message* message);
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size_t GetCapacity(Message* message);
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size_t GetSize(Message* message);
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void SetSize(Message* message, size_t size);
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MessageStatus GetStatus(Message* message);
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void SetStatus(Message* message, MessageStatus status);
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size_t GetOffset(Message* message);
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size_t SizeOfMessageStruct();
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#ifdef __cplusplus
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} // extern "C"
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#endif
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#endif // WIDEVINE_ODK_SRC_SERIALIZATION_BASE_H_
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