2018-09-14 11:30:16 +00:00
|
|
|
package apdu
|
|
|
|
|
|
|
|
import (
|
|
|
|
"bytes"
|
|
|
|
"encoding/binary"
|
|
|
|
)
|
|
|
|
|
|
|
|
type Command struct {
|
2018-09-27 16:01:09 +00:00
|
|
|
Cla uint8
|
|
|
|
Ins uint8
|
|
|
|
P1 uint8
|
|
|
|
P2 uint8
|
|
|
|
Data []byte
|
|
|
|
Le uint8
|
|
|
|
requiresLe bool
|
2018-09-14 11:30:16 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
func NewCommand(cla, ins, p1, p2 uint8, data []byte) *Command {
|
|
|
|
return &Command{
|
2018-09-27 16:01:09 +00:00
|
|
|
Cla: cla,
|
|
|
|
Ins: ins,
|
|
|
|
P1: p1,
|
|
|
|
P2: p2,
|
|
|
|
Data: data,
|
|
|
|
requiresLe: false,
|
2018-09-14 11:30:16 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2018-09-27 16:01:09 +00:00
|
|
|
func (c *Command) SetLE(le uint8) {
|
|
|
|
c.requiresLe = true
|
|
|
|
c.Le = le
|
|
|
|
}
|
|
|
|
|
2018-09-19 13:29:43 +00:00
|
|
|
func (c *Command) Serialize() ([]byte, error) {
|
2018-09-14 11:30:16 +00:00
|
|
|
buf := new(bytes.Buffer)
|
|
|
|
|
|
|
|
if err := binary.Write(buf, binary.BigEndian, c.Cla); err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
|
|
|
|
if err := binary.Write(buf, binary.BigEndian, c.Ins); err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
|
|
|
|
if err := binary.Write(buf, binary.BigEndian, c.P1); err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
|
|
|
|
if err := binary.Write(buf, binary.BigEndian, c.P2); err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
|
|
|
|
if len(c.Data) > 0 {
|
|
|
|
if err := binary.Write(buf, binary.BigEndian, uint8(len(c.Data))); err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
if err := binary.Write(buf, binary.BigEndian, c.Data); err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2018-09-27 16:01:09 +00:00
|
|
|
if c.requiresLe {
|
|
|
|
if err := binary.Write(buf, binary.BigEndian, c.Le); err != nil {
|
|
|
|
return nil, err
|
|
|
|
}
|
2018-09-14 11:30:16 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
return buf.Bytes(), nil
|
|
|
|
}
|