forked from intel/trustauthority-client-for-go
/
file_event_log_parser.go
41 lines (34 loc) · 1.08 KB
/
file_event_log_parser.go
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/*
* Copyright (c) 2022 Intel Corporation
* All rights reserved.
* SPDX-License-Identifier: BSD-3-Clause
*/
package tdx
import (
"bytes"
"os"
"github.com/pkg/errors"
)
// fileEventLogParser manages TD eventlog collection from file
type fileEventLogParser struct {
file string
}
// GetEventLogs is used to get TD eventlog by reading through file
func (parser *fileEventLogParser) GetEventLogs() ([]RtmrEventLog, error) {
var eventLogs []RtmrEventLog
b, err := os.ReadFile(parser.file)
if err != nil {
return nil, errors.Wrapf(err, "Failed to read event log file %s", parser.file)
}
eventBuf := bytes.NewBuffer(b)
// Parse and skip TCG_PCR_EVENT(Intel TXT spec. ver. 16.2) from event-log buffer
realEventBuf, realEventSize, err := parseTcgSpecEvent(eventBuf, uint32(len(b)))
if err != nil {
return nil, errors.Wrap(err, "error while parsing UEFI event log data")
}
eventLogs, err = createEventLog(realEventBuf, realEventSize, eventLogs)
if err != nil {
return nil, errors.Wrap(err, "error while creating event-log data for UEFI Events")
}
return eventLogs, nil
}