Function decodeJoinAccept

cmd/ttn-lw-cli/commands/lorawan.go:136–164

(msg *ttnpb.Message, config lorawanConfig)

}

func decodeJoinAccept(msg *ttnpb.Message, config lorawanConfig) (*lorawanDecodedFrame, error) {
	pld := msg.GetJoinAcceptPayload()
	key, keyName := config.getJoinAcceptDecodeKey()
	if key.IsZero() {
		logger.Warnf("No %s provided, skipping join accept decryption", keyName)
	} else {
		buf, err := crypto.DecryptJoinAccept(key, pld.Encrypted)
		if err != nil {
			return nil, err
		}
		n := len(buf)
		if n < 4 {
			logger.WithFields(log.Fields("length", n, "minimum", 4)).Warn("Invalid Join Accept message length")
			return &lorawanDecodedFrame{Message: msg}, nil
		}
		buf, mic := buf[:n-4], buf[n-4:]
		decBuf := ttnpb.Clone(pld)
		if err := lorawan.UnmarshalJoinAcceptPayload(buf, decBuf); err != nil {
			logger.WithError(err).Warn("Failed to unmarshal join accept payload")
			return &lorawanDecodedFrame{Message: msg}, nil
		}

		msg.Mic = mic
		msg.Payload = &ttnpb.Message_JoinAcceptPayload{
			JoinAcceptPayload: decBuf,
		}
	}
	return &lorawanDecodedFrame{Message: msg}, nil
}

func decodeDownlink(msg *ttnpb.Message, config lorawanConfig) (*lorawanDecodedFrame, error) {
	pld := msg.GetMacPayload()