// GetEventLog returns an array of structures representing the contents of the
// TSS event log
func (tpm *TPM) GetEventLog() ([]Log, error) {
var count C.UINT32
var events *C.TSS_PCR_EVENT
var event C.TSS_PCR_EVENT
err := tspiError(C.Tspi_TPM_GetEventLog(tpm.handle, &count, &events))
if err != nil {
return nil, err
}
if count == 0 {
return nil, nil
}
log := make([]Log, count)
length := count * C.UINT32(unsafe.Sizeof(event))
slice := (*[1 << 30]C.TSS_PCR_EVENT)(unsafe.Pointer(events))[:length:length]
for i := 0; i < int(count); i++ {
log[i].Pcr = int(slice[i].ulPcrIndex)
log[i].Eventtype = int(slice[i].eventType)
log[i].PcrValue = C.GoBytes(unsafe.Pointer(slice[i].rgbPcrValue), C.int(slice[i].ulPcrValueLength))
log[i].Event = C.GoBytes(unsafe.Pointer(slice[i].rgbEvent), C.int(slice[i].ulEventLength))
}
C.Tspi_Context_FreeMemory(tpm.context, (*C.BYTE)(unsafe.Pointer(events)))
return log, nil
}
// GetEventLog returns an array of structures representing the contents of the
// TSS event log
func (tpm *TPM) GetEventLog() ([]tspiconst.Log, error) {
var count C.UINT32
var events *C.TSS_PCR_EVENT
var event C.TSS_PCR_EVENT
var log []tspiconst.Log
f, err := os.Open("/sys/kernel/security/tpm0/binary_bios_measurements")
if err != nil {
return nil, err
}
firmware_events := bufio.NewReader(f)
for {
var entry tspiconst.Log
var datalen int32
err := binary.Read(firmware_events, binary.LittleEndian, &entry.Pcr)
if err == io.EOF {
break
}
if err != nil {
return nil, err
}
err = binary.Read(firmware_events, binary.LittleEndian, &entry.Eventtype)
if err != nil {
return nil, err
}
err = binary.Read(firmware_events, binary.LittleEndian, &entry.PcrValue)
if err != nil {
return nil, err
}
err = binary.Read(firmware_events, binary.LittleEndian, &datalen)
if err != nil {
return nil, err
}
data := make([]byte, datalen)
err = binary.Read(firmware_events, binary.LittleEndian, &data)
if err != nil {
return nil, err
}
entry.Event = data[:]
log = append(log, entry)
}
err = tspiError(C.Tspi_TPM_GetEventLog(tpm.handle, &count, &events))
if err != nil {
return nil, err
}
if count == 0 {
return log, nil
}
length := count * C.UINT32(unsafe.Sizeof(event))
slice := (*[1 << 30]C.TSS_PCR_EVENT)(unsafe.Pointer(events))[:length:length]
for i := 0; i < int(count); i++ {
var entry tspiconst.Log
entry.Pcr = int32(slice[i].ulPcrIndex)
entry.Eventtype = int32(slice[i].eventType)
copy(entry.PcrValue[:], C.GoBytes(unsafe.Pointer(slice[i].rgbPcrValue), C.int(slice[i].ulPcrValueLength)))
entry.Event = C.GoBytes(unsafe.Pointer(slice[i].rgbEvent), C.int(slice[i].ulEventLength))
log = append(log, entry)
}
C.Tspi_Context_FreeMemory(tpm.context, (*C.BYTE)(unsafe.Pointer(events)))
return log, nil
}