// NewTPMContext initialises a new TPM context and sets up the
// internal TSS structures.
func NewTPMContext() (*TPMContext, error) {
var result C.TSS_RESULT
var ctx TPMContext
C.Tspi_Context_Create(&ctx.ctx)
result = C.Tspi_Context_Connect(ctx.ctx, nil)
if result != C.TSS_SUCCESS {
switch result {
case C.TSS_E_INVALID_HANDLE:
return nil, ErrInvalidHandle
case C.TSS_E_INTERNAL_ERROR:
return nil, ErrInternalError
default:
return nil, ErrUnknown
}
}
result = C.Tspi_Context_GetTpmObject(ctx.ctx, &ctx.tpm)
if result != C.TSS_SUCCESS {
switch result {
case C.TSS_E_INVALID_HANDLE:
return nil, ErrInvalidHandle
case C.TSS_E_INTERNAL_ERROR:
return nil, ErrInternalError
case C.TSS_E_BAD_PARAMETER:
return nil, ErrBadParameter
default:
return nil, ErrUnknown
}
}
return &ctx, nil
}
// Connect opens a connection between the context and the TSS daemon. It
// returns an error on failure.
func (context *Context) Connect() error {
var tpmhandle C.TSS_HTPM
err := tspiError(C.Tspi_Context_Connect(context.context, nil))
if err != nil {
return err
}
C.Tspi_Context_GetTpmObject(context.context, &tpmhandle)
context.tpm = TPM{handle: tpmhandle, context: context.context}
return nil
}
func NewContext() (*Context, error) {
c := new(Context)
if result := C.Tspi_Context_Create(&c.ctx); isError(result) {
return nil, Error{result}
}
if result := C.Tspi_Context_Connect(c.ctx, nil /* local TPM */); isError(result) {
return nil, Error{result}
}
if result := C.Tspi_Context_GetTpmObject(c.ctx, &c.tpm); isError(result) {
return nil, Error{result}
}
return c, nil
}