ifapi_eventlog_system.h

/* SPDX-License-Identifier: BSD-2-Clause */
/*******************************************************************************
 * Copyright 2018-2019, Fraunhofer SIT sponsored by Infineon Technologies AG
 * All rights reserved.
 *******************************************************************************/
#ifndef IFAPI_EVENTLOG_SYSTEM_H
#define IFAPI_EVENTLOG_SYSTEM_H
 
#include <json.h>    // for json_object
#include <stdbool.h> // for bool
#include <stddef.h>  // for size_t
 
#include "efi_event.h"   // for TCG_EVENT_HEADER2, TCG_DIGEST2, TCG_EVENT
#include "fapi_types.h"  // for UINT8_ARY
#include "tss2_common.h" // for UINT32, BYTE, TSS2_RC
 
typedef UINT32 TCG_EVENT_TYPE;
 
typedef struct {
    TCG_EVENT_TYPE in;
    char          *name;
} TCG_EVENT_TYPE_ASSIGN;
 
typedef bool (*DIGEST2_CALLBACK)(TCG_DIGEST2 const *digest, size_t size, void *data);
typedef bool (*EVENT2_CALLBACK)(TCG_EVENT_HEADER2 const *event_hdr, size_t size, void *data);
typedef bool (*EVENT2DATA_CALLBACK)(TCG_EVENT2 const *event, UINT32 type, void *data);
typedef bool (*SPECID_CALLBACK)(TCG_EVENT const *event, void *data);
typedef bool (*LOG_EVENT_CALLBACK)(TCG_EVENT const *event_hdr, size_t size, void *data);
 
typedef struct {
    void               *data;
    SPECID_CALLBACK     specid_cb;
    LOG_EVENT_CALLBACK  log_eventhdr_cb;
    EVENT2_CALLBACK     event2hdr_cb;
    DIGEST2_CALLBACK    digest2_cb;
    EVENT2DATA_CALLBACK event2_cb;
} tpm2_eventlog_context;

typedef struct {
    UINT32    event_type;
    UINT8_ARY data;
} IFAPI_FIRMWARE_EVENT;
 
bool digest2_accumulator_callback(TCG_DIGEST2 const *digest, size_t size, void *data);
 
bool parse_event2body(TCG_EVENT2 const *event, UINT32 type);
bool foreach_digest2(tpm2_eventlog_context *ctx,
                     UINT32                 event_type,
                     TCG_DIGEST2 const     *event_hdr,
                     size_t                 count,
                     size_t                 size);
bool parse_event2(TCG_EVENT_HEADER2 const *eventhdr,
                  size_t                   buf_size,
                  size_t                  *event_size,
                  size_t                  *digests_size);
bool
foreach_event2(tpm2_eventlog_context *ctx, TCG_EVENT_HEADER2 const *eventhdr_start, size_t size);
bool specid_event(TCG_EVENT const *event, size_t size, TCG_EVENT_HEADER2 **next);
bool parse_eventlog(tpm2_eventlog_context *ctx, BYTE const *eventlog, size_t size);
 
TSS2_RC
ifapi_json_IFAPI_FIRMWARE_EVENT_deserialize(json_object          *jso,
                                            IFAPI_FIRMWARE_EVENT *out,
                                            bool                 *verify);
 
#endif /* IFAPI_EVENTLOG_SYSTEM_H */