47 lines
809 B
Go
47 lines
809 B
Go
|
package apdu
|
||
|
|
|
||
|
|
import (
|
||
|
|
"bytes"
|
||
|
|
"encoding/binary"
|
||
|
|
"errors"
|
||
|
|
)
|
||
|
|
|
||
|
|
type Response struct {
|
||
|
|
Data []byte
|
||
|
|
Sw1 uint8
|
||
|
|
Sw2 uint8
|
||
|
|
Sw uint16
|
||
|
|
}
|
||
|
|
|
||
|
|
var ErrBadRawResponse = errors.New("response data must be at least 2 bytes")
|
||
|
|
|
||
|
|
func (r *Response) deserialize(data []byte) error {
|
||
|
|
if len(data) < 2 {
|
||
|
|
return ErrBadRawResponse
|
||
|
|
}
|
||
|
|
|
||
|
|
r.Data = make([]byte, len(data)-2)
|
||
|
|
buf := bytes.NewReader(data)
|
||
|
|
|
||
|
|
if err := binary.Read(buf, binary.BigEndian, &r.Data); err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
|
||
|
|
if err := binary.Read(buf, binary.BigEndian, &r.Sw1); err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
|
||
|
|
if err := binary.Read(buf, binary.BigEndian, &r.Sw2); err != nil {
|
||
|
|
return err
|
||
|
|
}
|
||
|
|
|
||
|
|
r.Sw = (uint16(r.Sw1) << 8) | uint16(r.Sw2)
|
||
|
|
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func ParseResponse(data []byte) (*Response, error) {
|
||
|
|
r := &Response{}
|
||
|
|
return r, r.deserialize(data)
|
||
|
|
}
|