func EngineById(name string) (*Engine, error) {
cname := C.CString(name)
defer C.free(unsafe.Pointer(cname))
e := &Engine{
e: C.ENGINE_by_id(cname),
}
if e.e == nil {
return nil, fmt.Errorf("engine %s missing", name)
}
if C.ENGINE_init(e.e) == 0 {
C.ENGINE_free(e.e)
return nil, fmt.Errorf("engine %s not initialized", name)
}
runtime.SetFinalizer(e, func(e *Engine) {
C.ENGINE_finish(e.e)
C.ENGINE_free(e.e)
})
return e, nil
}
//these methods interrogate the OpenSSL library to getermine what
//operations they are using.
func finishEngine(self *ENGINE) {
C.ENGINE_finish(self.engine)
return
}
func finishEngine(e *Engine) {
C.ENGINE_finish(e.eng)
}