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-rw-r--r--nitrokey/src/device/wrapper.rs134
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diff --git a/nitrokey/src/device/wrapper.rs b/nitrokey/src/device/wrapper.rs
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-// Copyright (C) 2018-2019 Robin Krahl <robin.krahl@ireas.org>
-// SPDX-License-Identifier: MIT
-
-use crate::device::{Device, Model, Pro, Storage};
-use crate::error::Error;
-use crate::otp::GenerateOtp;
-
-/// A wrapper for a Nitrokey device of unknown type.
-///
-/// Use the [`connect`][] method to obtain a wrapped instance. The wrapper implements all traits
-/// that are shared between all Nitrokey devices so that the shared functionality can be used
-/// without knowing the type of the underlying device. If you want to use functionality that is
-/// not available for all devices, you have to extract the device.
-///
-/// # Examples
-///
-/// Authentication with error handling:
-///
-/// ```no_run
-/// use nitrokey::{Authenticate, DeviceWrapper, User};
-/// # use nitrokey::Error;
-///
-/// fn perform_user_task<'a>(device: &User<'a, DeviceWrapper<'a>>) {}
-/// fn perform_other_task(device: &DeviceWrapper) {}
-///
-/// # fn try_main() -> Result<(), Error> {
-/// let mut manager = nitrokey::take()?;
-/// let device = manager.connect()?;
-/// let device = match device.authenticate_user("123456") {
-/// Ok(user) => {
-/// perform_user_task(&user);
-/// user.device()
-/// },
-/// Err((device, err)) => {
-/// eprintln!("Could not authenticate as user: {}", err);
-/// device
-/// },
-/// };
-/// perform_other_task(&device);
-/// # Ok(())
-/// # }
-/// ```
-///
-/// Device-specific commands:
-///
-/// ```no_run
-/// use nitrokey::{DeviceWrapper, Storage};
-/// # use nitrokey::Error;
-///
-/// fn perform_common_task(device: &DeviceWrapper) {}
-/// fn perform_storage_task(device: &Storage) {}
-///
-/// # fn try_main() -> Result<(), Error> {
-/// let mut manager = nitrokey::take()?;
-/// let device = manager.connect()?;
-/// perform_common_task(&device);
-/// match device {
-/// DeviceWrapper::Storage(storage) => perform_storage_task(&storage),
-/// _ => (),
-/// };
-/// # Ok(())
-/// # }
-/// ```
-///
-/// [`connect`]: struct.Manager.html#method.connect
-#[derive(Debug)]
-pub enum DeviceWrapper<'a> {
- /// A Nitrokey Storage device.
- Storage(Storage<'a>),
- /// A Nitrokey Pro device.
- Pro(Pro<'a>),
-}
-
-impl<'a> DeviceWrapper<'a> {
- fn device(&self) -> &dyn Device<'a> {
- match *self {
- DeviceWrapper::Storage(ref storage) => storage,
- DeviceWrapper::Pro(ref pro) => pro,
- }
- }
-
- fn device_mut(&mut self) -> &mut dyn Device<'a> {
- match *self {
- DeviceWrapper::Storage(ref mut storage) => storage,
- DeviceWrapper::Pro(ref mut pro) => pro,
- }
- }
-}
-
-impl<'a> From<Pro<'a>> for DeviceWrapper<'a> {
- fn from(device: Pro<'a>) -> Self {
- DeviceWrapper::Pro(device)
- }
-}
-
-impl<'a> From<Storage<'a>> for DeviceWrapper<'a> {
- fn from(device: Storage<'a>) -> Self {
- DeviceWrapper::Storage(device)
- }
-}
-
-impl<'a> GenerateOtp for DeviceWrapper<'a> {
- fn get_hotp_slot_name(&self, slot: u8) -> Result<String, Error> {
- self.device().get_hotp_slot_name(slot)
- }
-
- fn get_totp_slot_name(&self, slot: u8) -> Result<String, Error> {
- self.device().get_totp_slot_name(slot)
- }
-
- fn get_hotp_code(&mut self, slot: u8) -> Result<String, Error> {
- self.device_mut().get_hotp_code(slot)
- }
-
- fn get_totp_code(&self, slot: u8) -> Result<String, Error> {
- self.device().get_totp_code(slot)
- }
-}
-
-impl<'a> Device<'a> for DeviceWrapper<'a> {
- fn into_manager(self) -> &'a mut crate::Manager {
- match self {
- DeviceWrapper::Pro(dev) => dev.into_manager(),
- DeviceWrapper::Storage(dev) => dev.into_manager(),
- }
- }
-
- fn get_model(&self) -> Model {
- match *self {
- DeviceWrapper::Pro(_) => Model::Pro,
- DeviceWrapper::Storage(_) => Model::Storage,
- }
- }
-}