Method IpcHandle

device/uapi.go:419–468

(socket net.Conn)

}

func (device *Device) IpcHandle(socket net.Conn) {
	defer socket.Close()

	buffered := func(s io.ReadWriter) *bufio.ReadWriter {
		reader := bufio.NewReader(s)
		writer := bufio.NewWriter(s)
		return bufio.NewReadWriter(reader, writer)
	}(socket)

	for {
		op, err := buffered.ReadString('\n')
		if err != nil {
			return
		}

		// handle operation
		switch op {
		case "set=1\n":
			err = device.IpcSetOperation(buffered.Reader)
		case "get=1\n":
			var nextByte byte
			nextByte, err = buffered.ReadByte()
			if err != nil {
				return
			}
			if nextByte != '\n' {
				err = ipcErrorf(ipc.IpcErrorInvalid, "trailing character in UAPI get: %q", nextByte)
				break
			}
			err = device.IpcGetOperation(buffered.Writer)
		default:
			device.log.Errorf("invalid UAPI operation: %v", op)
			return
		}

		// write status
		var status *IPCError
		if err != nil && !errors.As(err, &status) {
			// shouldn't happen
			status = ipcErrorf(ipc.IpcErrorUnknown, "other UAPI error: %w", err)
		}
		if status != nil {
			device.log.Errorf("%v", status)
			fmt.Fprintf(buffered, "errno=%d\n\n", status.ErrorCode())
		} else {
			fmt.Fprintf(buffered, "errno=0\n\n")
		}
		buffered.Flush()
	}
}