diff options
Diffstat (limited to 'src/device')
| -rw-r--r-- | src/device/mod.rs | 464 | ||||
| -rw-r--r-- | src/device/pro.rs | 79 | ||||
| -rw-r--r-- | src/device/storage.rs | 735 | ||||
| -rw-r--r-- | src/device/wrapper.rs | 134 |
4 files changed, 1412 insertions, 0 deletions
diff --git a/src/device/mod.rs b/src/device/mod.rs new file mode 100644 index 0000000..5e15f08 --- /dev/null +++ b/src/device/mod.rs @@ -0,0 +1,464 @@ +// Copyright (C) 2018-2019 Robin Krahl <robin.krahl@ireas.org> +// SPDX-License-Identifier: MIT + +mod pro; +mod storage; +mod wrapper; + +use std::fmt; + +use libc; +use nitrokey_sys; + +use crate::auth::Authenticate; +use crate::config::{Config, RawConfig}; +use crate::error::{CommunicationError, Error}; +use crate::otp::GenerateOtp; +use crate::pws::GetPasswordSafe; +use crate::util::{ + get_command_result, get_cstring, get_last_error, result_from_string, result_or_error, +}; + +pub use pro::Pro; +pub use storage::{ + SdCardData, Storage, StorageProductionInfo, StorageStatus, VolumeMode, VolumeStatus, +}; +pub use wrapper::DeviceWrapper; + +/// Available Nitrokey models. +#[derive(Clone, Copy, Debug, PartialEq)] +pub enum Model { + /// The Nitrokey Storage. + Storage, + /// The Nitrokey Pro. + Pro, +} + +impl fmt::Display for Model { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + f.write_str(match *self { + Model::Pro => "Pro", + Model::Storage => "Storage", + }) + } +} + +/// A firmware version for a Nitrokey device. +#[derive(Clone, Copy, Debug, PartialEq)] +pub struct FirmwareVersion { + /// The major firmware version, e. g. 0 in v0.40. + pub major: u8, + /// The minor firmware version, e. g. 40 in v0.40. + pub minor: u8, +} + +impl fmt::Display for FirmwareVersion { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + write!(f, "v{}.{}", self.major, self.minor) + } +} + +/// A Nitrokey device. +/// +/// This trait provides the commands that can be executed without authentication and that are +/// present on all supported Nitrokey devices. +pub trait Device<'a>: Authenticate<'a> + GetPasswordSafe<'a> + GenerateOtp + fmt::Debug { + /// Returns the [`Manager`][] instance that has been used to connect to this device. + /// + /// # Example + /// + /// ``` + /// use nitrokey::{Device, DeviceWrapper}; + /// + /// fn do_something(device: DeviceWrapper) { + /// // reconnect to any device + /// let manager = device.into_manager(); + /// let device = manager.connect(); + /// // do something with the device + /// // ... + /// } + /// + /// match nitrokey::take()?.connect() { + /// Ok(device) => do_something(device), + /// Err(err) => println!("Could not connect to a Nitrokey: {}", err), + /// } + /// # Ok::<(), nitrokey::Error>(()) + /// ``` + fn into_manager(self) -> &'a mut crate::Manager; + + /// Returns the model of the connected Nitrokey device. + /// + /// # Example + /// + /// ```no_run + /// use nitrokey::Device; + /// # use nitrokey::Error; + /// + /// # fn try_main() -> Result<(), Error> { + /// let mut manager = nitrokey::take()?; + /// let device = manager.connect()?; + /// println!("Connected to a Nitrokey {}", device.get_model()); + /// # Ok(()) + /// # } + fn get_model(&self) -> Model; + + /// Returns the serial number of the Nitrokey device. The serial number is the string + /// representation of a hex number. + /// + /// # Example + /// + /// ```no_run + /// use nitrokey::Device; + /// # use nitrokey::Error; + /// + /// # fn try_main() -> Result<(), Error> { + /// let mut manager = nitrokey::take()?; + /// let device = manager.connect()?; + /// match device.get_serial_number() { + /// Ok(number) => println!("serial no: {}", number), + /// Err(err) => eprintln!("Could not get serial number: {}", err), + /// }; + /// # Ok(()) + /// # } + /// ``` + fn get_serial_number(&self) -> Result<String, Error> { + result_from_string(unsafe { nitrokey_sys::NK_device_serial_number() }) + } + + /// Returns the number of remaining authentication attempts for the user. The total number of + /// available attempts is three. + /// + /// # Example + /// + /// ```no_run + /// use nitrokey::Device; + /// # use nitrokey::Error; + /// + /// # fn try_main() -> Result<(), Error> { + /// let mut manager = nitrokey::take()?; + /// let device = manager.connect()?; + /// let count = device.get_user_retry_count(); + /// match device.get_user_retry_count() { + /// Ok(count) => println!("{} remaining authentication attempts (user)", count), + /// Err(err) => eprintln!("Could not get user retry count: {}", err), + /// } + /// # Ok(()) + /// # } + /// ``` + fn get_user_retry_count(&self) -> Result<u8, Error> { + result_or_error(unsafe { nitrokey_sys::NK_get_user_retry_count() }) + } + + /// Returns the number of remaining authentication attempts for the admin. The total number of + /// available attempts is three. + /// + /// # Example + /// + /// ```no_run + /// use nitrokey::Device; + /// # use nitrokey::Error; + /// + /// # fn try_main() -> Result<(), Error> { + /// let mut manager = nitrokey::take()?; + /// let device = manager.connect()?; + /// let count = device.get_admin_retry_count(); + /// match device.get_admin_retry_count() { + /// Ok(count) => println!("{} remaining authentication attempts (admin)", count), + /// Err(err) => eprintln!("Could not get admin retry count: {}", err), + /// } + /// # Ok(()) + /// # } + /// ``` + fn get_admin_retry_count(&self) -> Result<u8, Error> { + result_or_error(unsafe { nitrokey_sys::NK_get_admin_retry_count() }) + } + + /// Returns the firmware version. + /// + /// # Example + /// + /// ```no_run + /// use nitrokey::Device; + /// # use nitrokey::Error; + /// + /// # fn try_main() -> Result<(), Error> { + /// let mut manager = nitrokey::take()?; + /// let device = manager.connect()?; + /// match device.get_firmware_version() { + /// Ok(version) => println!("Firmware version: {}", version), + /// Err(err) => eprintln!("Could not access firmware version: {}", err), + /// }; + /// # Ok(()) + /// # } + /// ``` + fn get_firmware_version(&self) -> Result<FirmwareVersion, Error> { + let major = result_or_error(unsafe { nitrokey_sys::NK_get_major_firmware_version() })?; + let minor = result_or_error(unsafe { nitrokey_sys::NK_get_minor_firmware_version() })?; + Ok(FirmwareVersion { major, minor }) + } + + /// Returns the current configuration of the Nitrokey device. + /// + /// # Example + /// + /// ```no_run + /// use nitrokey::Device; + /// # use nitrokey::Error; + /// + /// # fn try_main() -> Result<(), Error> { + /// let mut manager = nitrokey::take()?; + /// let device = manager.connect()?; + /// let config = device.get_config()?; + /// println!("numlock binding: {:?}", config.numlock); + /// println!("capslock binding: {:?}", config.capslock); + /// println!("scrollock binding: {:?}", config.scrollock); + /// println!("require password for OTP: {:?}", config.user_password); + /// # Ok(()) + /// # } + /// ``` + fn get_config(&self) -> Result<Config, Error> { + let config_ptr = unsafe { nitrokey_sys::NK_read_config() }; + if config_ptr.is_null() { + return Err(get_last_error()); + } + let config_array_ptr = config_ptr as *const [u8; 5]; + let raw_config = unsafe { RawConfig::from(*config_array_ptr) }; + unsafe { libc::free(config_ptr as *mut libc::c_void) }; + Ok(raw_config.into()) + } + + /// Changes the administrator PIN. + /// + /// # Errors + /// + /// - [`InvalidString`][] if one of the provided passwords contains a null byte + /// - [`WrongPassword`][] if the current admin password is wrong + /// + /// # Example + /// + /// ```no_run + /// use nitrokey::Device; + /// # use nitrokey::Error; + /// + /// # fn try_main() -> Result<(), Error> { + /// let mut manager = nitrokey::take()?; + /// let mut device = manager.connect()?; + /// match device.change_admin_pin("12345678", "12345679") { + /// Ok(()) => println!("Updated admin PIN."), + /// Err(err) => eprintln!("Failed to update admin PIN: {}", err), + /// }; + /// # Ok(()) + /// # } + /// ``` + /// + /// [`InvalidString`]: enum.LibraryError.html#variant.InvalidString + /// [`WrongPassword`]: enum.CommandError.html#variant.WrongPassword + fn change_admin_pin(&mut self, current: &str, new: &str) -> Result<(), Error> { + let current_string = get_cstring(current)?; + let new_string = get_cstring(new)?; + get_command_result(unsafe { + nitrokey_sys::NK_change_admin_PIN(current_string.as_ptr(), new_string.as_ptr()) + }) + } + + /// Changes the user PIN. + /// + /// # Errors + /// + /// - [`InvalidString`][] if one of the provided passwords contains a null byte + /// - [`WrongPassword`][] if the current user password is wrong + /// + /// # Example + /// + /// ```no_run + /// use nitrokey::Device; + /// # use nitrokey::Error; + /// + /// # fn try_main() -> Result<(), Error> { + /// let mut manager = nitrokey::take()?; + /// let mut device = manager.connect()?; + /// match device.change_user_pin("123456", "123457") { + /// Ok(()) => println!("Updated admin PIN."), + /// Err(err) => eprintln!("Failed to update admin PIN: {}", err), + /// }; + /// # Ok(()) + /// # } + /// ``` + /// + /// [`InvalidString`]: enum.LibraryError.html#variant.InvalidString + /// [`WrongPassword`]: enum.CommandError.html#variant.WrongPassword + fn change_user_pin(&mut self, current: &str, new: &str) -> Result<(), Error> { + let current_string = get_cstring(current)?; + let new_string = get_cstring(new)?; + get_command_result(unsafe { + nitrokey_sys::NK_change_user_PIN(current_string.as_ptr(), new_string.as_ptr()) + }) + } + + /// Unlocks the user PIN after three failed login attempts and sets it to the given value. + /// + /// # Errors + /// + /// - [`InvalidString`][] if one of the provided passwords contains a null byte + /// - [`WrongPassword`][] if the admin password is wrong + /// + /// # Example + /// + /// ```no_run + /// use nitrokey::Device; + /// # use nitrokey::Error; + /// + /// # fn try_main() -> Result<(), Error> { + /// let mut manager = nitrokey::take()?; + /// let mut device = manager.connect()?; + /// match device.unlock_user_pin("12345678", "123456") { + /// Ok(()) => println!("Unlocked user PIN."), + /// Err(err) => eprintln!("Failed to unlock user PIN: {}", err), + /// }; + /// # Ok(()) + /// # } + /// ``` + /// + /// [`InvalidString`]: enum.LibraryError.html#variant.InvalidString + /// [`WrongPassword`]: enum.CommandError.html#variant.WrongPassword + fn unlock_user_pin(&mut self, admin_pin: &str, user_pin: &str) -> Result<(), Error> { + let admin_pin_string = get_cstring(admin_pin)?; + let user_pin_string = get_cstring(user_pin)?; + get_command_result(unsafe { + nitrokey_sys::NK_unlock_user_password( + admin_pin_string.as_ptr(), + user_pin_string.as_ptr(), + ) + }) + } + + /// Locks the Nitrokey device. + /// + /// This disables the password store if it has been unlocked. On the Nitrokey Storage, this + /// also disables the volumes if they have been enabled. + /// + /// # Example + /// + /// ```no_run + /// use nitrokey::Device; + /// # use nitrokey::Error; + /// + /// # fn try_main() -> Result<(), Error> { + /// let mut manager = nitrokey::take()?; + /// let mut device = manager.connect()?; + /// match device.lock() { + /// Ok(()) => println!("Locked the Nitrokey device."), + /// Err(err) => eprintln!("Could not lock the Nitrokey device: {}", err), + /// }; + /// # Ok(()) + /// # } + /// ``` + fn lock(&mut self) -> Result<(), Error> { + get_command_result(unsafe { nitrokey_sys::NK_lock_device() }) + } + + /// Performs a factory reset on the Nitrokey device. + /// + /// This commands performs a factory reset on the smart card (like the factory reset via `gpg + /// --card-edit`) and then clears the flash memory (password safe, one-time passwords etc.). + /// After a factory reset, [`build_aes_key`][] has to be called before the password safe or the + /// encrypted volume can be used. + /// + /// # Errors + /// + /// - [`InvalidString`][] if the provided password contains a null byte + /// - [`WrongPassword`][] if the admin password is wrong + /// + /// # Example + /// + /// ```no_run + /// use nitrokey::Device; + /// # use nitrokey::Error; + /// + /// # fn try_main() -> Result<(), Error> { + /// let mut manager = nitrokey::take()?; + /// let mut device = manager.connect()?; + /// match device.factory_reset("12345678") { + /// Ok(()) => println!("Performed a factory reset."), + /// Err(err) => eprintln!("Could not perform a factory reset: {}", err), + /// }; + /// # Ok(()) + /// # } + /// ``` + /// + /// [`build_aes_key`]: #method.build_aes_key + fn factory_reset(&mut self, admin_pin: &str) -> Result<(), Error> { + let admin_pin_string = get_cstring(admin_pin)?; + get_command_result(unsafe { nitrokey_sys::NK_factory_reset(admin_pin_string.as_ptr()) }) + } + + /// Builds a new AES key on the Nitrokey. + /// + /// The AES key is used to encrypt the password safe and the encrypted volume. You may need + /// to call this method after a factory reset, either using [`factory_reset`][] or using `gpg + /// --card-edit`. You can also use it to destroy the data stored in the password safe or on + /// the encrypted volume. + /// + /// # Errors + /// + /// - [`InvalidString`][] if the provided password contains a null byte + /// - [`WrongPassword`][] if the admin password is wrong + /// + /// # Example + /// + /// ```no_run + /// use nitrokey::Device; + /// # use nitrokey::Error; + /// + /// # fn try_main() -> Result<(), Error> { + /// let mut manager = nitrokey::take()?; + /// let mut device = manager.connect()?; + /// match device.build_aes_key("12345678") { + /// Ok(()) => println!("New AES keys have been built."), + /// Err(err) => eprintln!("Could not build new AES keys: {}", err), + /// }; + /// # Ok(()) + /// # } + /// ``` + /// + /// [`factory_reset`]: #method.factory_reset + fn build_aes_key(&mut self, admin_pin: &str) -> Result<(), Error> { + let admin_pin_string = get_cstring(admin_pin)?; + get_command_result(unsafe { nitrokey_sys::NK_build_aes_key(admin_pin_string.as_ptr()) }) + } +} + +fn get_connected_model() -> Option<Model> { + match unsafe { nitrokey_sys::NK_get_device_model() } { + nitrokey_sys::NK_device_model_NK_PRO => Some(Model::Pro), + nitrokey_sys::NK_device_model_NK_STORAGE => Some(Model::Storage), + _ => None, + } +} + +pub(crate) fn create_device_wrapper( + manager: &mut crate::Manager, + model: Model, +) -> DeviceWrapper<'_> { + match model { + Model::Pro => Pro::new(manager).into(), + Model::Storage => Storage::new(manager).into(), + } +} + +pub(crate) fn get_connected_device( + manager: &mut crate::Manager, +) -> Result<DeviceWrapper<'_>, Error> { + match get_connected_model() { + Some(model) => Ok(create_device_wrapper(manager, model)), + None => Err(CommunicationError::NotConnected.into()), + } +} + +pub(crate) fn connect_enum(model: Model) -> bool { + let model = match model { + Model::Storage => nitrokey_sys::NK_device_model_NK_STORAGE, + Model::Pro => nitrokey_sys::NK_device_model_NK_PRO, + }; + unsafe { nitrokey_sys::NK_login_enum(model) == 1 } +} diff --git a/src/device/pro.rs b/src/device/pro.rs new file mode 100644 index 0000000..a65345e --- /dev/null +++ b/src/device/pro.rs @@ -0,0 +1,79 @@ +// Copyright (C) 2018-2019 Robin Krahl <robin.krahl@ireas.org> +// SPDX-License-Identifier: MIT + +use nitrokey_sys; + +use crate::device::{Device, Model}; +use crate::otp::GenerateOtp; + +/// A Nitrokey Pro device without user or admin authentication. +/// +/// Use the [`connect`][] method to obtain an instance wrapper or the [`connect_pro`] method to +/// directly obtain an instance. If you want to execute a command that requires user or admin +/// authentication, use [`authenticate_admin`][] or [`authenticate_user`][]. +/// +/// # Examples +/// +/// Authentication with error handling: +/// +/// ```no_run +/// use nitrokey::{Authenticate, User, Pro}; +/// # use nitrokey::Error; +/// +/// fn perform_user_task<'a>(device: &User<'a, Pro<'a>>) {} +/// fn perform_other_task(device: &Pro) {} +/// +/// # fn try_main() -> Result<(), Error> { +/// let mut manager = nitrokey::take()?; +/// let device = manager.connect_pro()?; +/// 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(()) +/// # } +/// ``` +/// +/// [`authenticate_admin`]: trait.Authenticate.html#method.authenticate_admin +/// [`authenticate_user`]: trait.Authenticate.html#method.authenticate_user +/// [`connect`]: struct.Manager.html#method.connect +/// [`connect_pro`]: struct.Manager.html#method.connect_pro +#[derive(Debug)] +pub struct Pro<'a> { + manager: Option<&'a mut crate::Manager>, +} + +impl<'a> Pro<'a> { + pub(crate) fn new(manager: &'a mut crate::Manager) -> Pro<'a> { + Pro { + manager: Some(manager), + } + } +} + +impl<'a> Drop for Pro<'a> { + fn drop(&mut self) { + unsafe { + nitrokey_sys::NK_logout(); + } + } +} + +impl<'a> Device<'a> for Pro<'a> { + fn into_manager(mut self) -> &'a mut crate::Manager { + self.manager.take().unwrap() + } + + fn get_model(&self) -> Model { + Model::Pro + } +} + +impl<'a> GenerateOtp for Pro<'a> {} diff --git a/src/device/storage.rs b/src/device/storage.rs new file mode 100644 index 0000000..370ce36 --- /dev/null +++ b/src/device/storage.rs @@ -0,0 +1,735 @@ +// Copyright (C) 2018-2019 Robin Krahl <robin.krahl@ireas.org> +// SPDX-License-Identifier: MIT + +use std::fmt; + +use nitrokey_sys; + +use crate::device::{Device, FirmwareVersion, Model}; +use crate::error::Error; +use crate::otp::GenerateOtp; +use crate::util::{get_command_result, get_cstring}; + +/// A Nitrokey Storage device without user or admin authentication. +/// +/// Use the [`connect`][] method to obtain an instance wrapper or the [`connect_storage`] method to +/// directly obtain an instance. If you want to execute a command that requires user or admin +/// authentication, use [`authenticate_admin`][] or [`authenticate_user`][]. +/// +/// # Examples +/// +/// Authentication with error handling: +/// +/// ```no_run +/// use nitrokey::{Authenticate, User, Storage}; +/// # use nitrokey::Error; +/// +/// fn perform_user_task<'a>(device: &User<'a, Storage<'a>>) {} +/// fn perform_other_task(device: &Storage) {} +/// +/// # fn try_main() -> Result<(), Error> { +/// let mut manager = nitrokey::take()?; +/// let device = manager.connect_storage()?; +/// 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(()) +/// # } +/// ``` +/// +/// [`authenticate_admin`]: trait.Authenticate.html#method.authenticate_admin +/// [`authenticate_user`]: trait.Authenticate.html#method.authenticate_user +/// [`connect`]: struct.Manager.html#method.connect +/// [`connect_storage`]: struct.Manager.html#method.connect_storage +#[derive(Debug)] +pub struct Storage<'a> { + manager: Option<&'a mut crate::Manager>, +} + +/// The access mode of a volume on the Nitrokey Storage. +#[derive(Clone, Copy, Debug, PartialEq)] +pub enum VolumeMode { + /// A read-only volume. + ReadOnly, + /// A read-write volume. + ReadWrite, +} + +impl fmt::Display for VolumeMode { + fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result { + f.write_str(match *self { + VolumeMode::ReadOnly => "read-only", + VolumeMode::ReadWrite => "read-write", + }) + } +} + +/// The status of a volume on a Nitrokey Storage device. +#[derive(Debug)] +pub struct VolumeStatus { + /// Indicates whether the volume is read-only. + pub read_only: bool, + /// Indicates whether the volume is active. + pub active: bool, +} + +/// Information about the SD card in a Storage device. +#[derive(Debug)] +pub struct SdCardData { + /// The serial number of the SD card. + pub serial_number: u32, + /// The size of the SD card in GB. + pub size: u8, + /// The year the card was manufactured, e. g. 17 for 2017. + pub manufacturing_year: u8, + /// The month the card was manufactured. + pub manufacturing_month: u8, + /// The OEM ID. + pub oem: u16, + /// The manufacturer ID. + pub manufacturer: u8, +} + +/// Production information for a Storage device. +#[derive(Debug)] +pub struct StorageProductionInfo { + /// The firmware version. + pub firmware_version: FirmwareVersion, + /// The internal firmware version. + pub firmware_version_internal: u8, + /// The serial number of the CPU. + pub serial_number_cpu: u32, + /// Information about the SD card. + pub sd_card: SdCardData, +} + +/// The status of a Nitrokey Storage device. +#[derive(Debug)] +pub struct StorageStatus { + /// The status of the unencrypted volume. + pub unencrypted_volume: VolumeStatus, + /// The status of the encrypted volume. + pub encrypted_volume: VolumeStatus, + /// The status of the hidden volume. + pub hidden_volume: VolumeStatus, + /// The firmware version. + pub firmware_version: FirmwareVersion, + /// Indicates whether the firmware is locked. + pub firmware_locked: bool, + /// The serial number of the SD card in the Storage stick. + pub serial_number_sd_card: u32, + /// The serial number of the smart card in the Storage stick. + pub serial_number_smart_card: u32, + /// The number of remaining login attempts for the user PIN. + pub user_retry_count: u8, + /// The number of remaining login attempts for the admin PIN. + pub admin_retry_count: u8, + /// Indicates whether a new SD card was found. + pub new_sd_card_found: bool, + /// Indicates whether the SD card is filled with random characters. + pub filled_with_random: bool, + /// Indicates whether the stick has been initialized by generating + /// the AES keys. + pub stick_initialized: bool, +} + +impl<'a> Storage<'a> { + pub(crate) fn new(manager: &'a mut crate::Manager) -> Storage<'a> { + Storage { + manager: Some(manager), + } + } + + /// Changes the update PIN. + /// + /// The update PIN is used to enable firmware updates. Unlike the user and the admin PIN, the + /// update PIN is not managed by the OpenPGP smart card but by the Nitrokey firmware. There is + /// no retry counter as with the other PIN types. + /// + /// # Errors + /// + /// - [`InvalidString`][] if one of the provided passwords contains a null byte + /// - [`WrongPassword`][] if the current update password is wrong + /// + /// # Example + /// + /// ```no_run + /// # use nitrokey::Error; + /// + /// # fn try_main() -> Result<(), Error> { + /// let mut manager = nitrokey::take()?; + /// let mut device = manager.connect_storage()?; + /// match device.change_update_pin("12345678", "87654321") { + /// Ok(()) => println!("Updated update PIN."), + /// Err(err) => eprintln!("Failed to update update PIN: {}", err), + /// }; + /// # Ok(()) + /// # } + /// ``` + /// + /// [`InvalidString`]: enum.LibraryError.html#variant.InvalidString + /// [`WrongPassword`]: enum.CommandError.html#variant.WrongPassword + pub fn change_update_pin(&mut self, current: &str, new: &str) -> Result<(), Error> { + let current_string = get_cstring(current)?; + let new_string = get_cstring(new)?; + get_command_result(unsafe { + nitrokey_sys::NK_change_update_password(current_string.as_ptr(), new_string.as_ptr()) + }) + } + + /// Enables the firmware update mode. + /// + /// During firmware update mode, the Nitrokey can no longer be accessed using HID commands. + /// To resume normal operation, run `dfu-programmer at32uc3a3256s launch`. In order to enter + /// the firmware update mode, you need the update password that can be changed using the + /// [`change_update_pin`][] method. + /// + /// # Errors + /// + /// - [`InvalidString`][] if one of the provided passwords contains a null byte + /// - [`WrongPassword`][] if the current update password is wrong + /// + /// # Example + /// + /// ```no_run + /// # use nitrokey::Error; + /// + /// # fn try_main() -> Result<(), Error> { + /// let mut manager = nitrokey::take()?; + /// let mut device = manager.connect_storage()?; + /// match device.enable_firmware_update("12345678") { + /// Ok(()) => println!("Nitrokey entered update mode."), + /// Err(err) => eprintln!("Could not enter update mode: {}", err), + /// }; + /// # Ok(()) + /// # } + /// ``` + /// + /// [`InvalidString`]: enum.LibraryError.html#variant.InvalidString + /// [`WrongPassword`]: enum.CommandError.html#variant.WrongPassword + pub fn enable_firmware_update(&mut self, update_pin: &str) -> Result<(), Error> { + let update_pin_string = get_cstring(update_pin)?; + get_command_result(unsafe { + nitrokey_sys::NK_enable_firmware_update(update_pin_string.as_ptr()) + }) + } + + /// Enables the encrypted storage volume. + /// + /// Once the encrypted volume is enabled, it is presented to the operating system as a block + /// device. The API does not provide any information on the name or path of this block device. + /// + /// # Errors + /// + /// - [`InvalidString`][] if the provided password contains a null byte + /// - [`WrongPassword`][] if the provided user password is wrong + /// + /// # Example + /// + /// ```no_run + /// # use nitrokey::Error; + /// + /// # fn try_main() -> Result<(), Error> { + /// let mut manager = nitrokey::take()?; + /// let mut device = manager.connect_storage()?; + /// match device.enable_encrypted_volume("123456") { + /// Ok(()) => println!("Enabled the encrypted volume."), + /// Err(err) => eprintln!("Could not enable the encrypted volume: {}", err), + /// }; + /// # Ok(()) + /// # } + /// ``` + /// + /// [`InvalidString`]: enum.LibraryError.html#variant.InvalidString + /// [`WrongPassword`]: enum.CommandError.html#variant.WrongPassword + pub fn enable_encrypted_volume(&mut self, user_pin: &str) -> Result<(), Error> { + let user_pin = get_cstring(user_pin)?; + get_command_result(unsafe { nitrokey_sys::NK_unlock_encrypted_volume(user_pin.as_ptr()) }) + } + + /// Disables the encrypted storage volume. + /// + /// Once the volume is disabled, it can be no longer accessed as a block device. If the + /// encrypted volume has not been enabled, this method still returns a success. + /// + /// # Example + /// + /// ```no_run + /// # use nitrokey::Error; + /// + /// fn use_volume() {} + /// + /// # fn try_main() -> Result<(), Error> { + /// let mut manager = nitrokey::take()?; + /// let mut device = manager.connect_storage()?; + /// match device.enable_encrypted_volume("123456") { + /// Ok(()) => { + /// println!("Enabled the encrypted volume."); + /// use_volume(); + /// match device.disable_encrypted_volume() { + /// Ok(()) => println!("Disabled the encrypted volume."), + /// Err(err) => { + /// eprintln!("Could not disable the encrypted volume: {}", err); + /// }, + /// }; + /// }, + /// Err(err) => eprintln!("Could not enable the encrypted volume: {}", err), + /// }; + /// # Ok(()) + /// # } + /// ``` + pub fn disable_encrypted_volume(&mut self) -> Result<(), Error> { + get_command_result(unsafe { nitrokey_sys::NK_lock_encrypted_volume() }) + } + + /// Enables a hidden storage volume. + /// + /// This function will only succeed if the encrypted storage ([`enable_encrypted_volume`][]) or + /// another hidden volume has been enabled previously. Once the hidden volume is enabled, it + /// is presented to the operating system as a block device and any previously opened encrypted + /// or hidden volumes are closed. The API does not provide any information on the name or path + /// of this block device. + /// + /// Note that the encrypted and the hidden volumes operate on the same storage area, so using + /// both at the same time might lead to data loss. + /// + /// The hidden volume to unlock is selected based on the provided password. + /// + /// # Errors + /// + /// - [`AesDecryptionFailed`][] if the encrypted storage has not been opened before calling + /// this method or the AES key has not been built + /// - [`InvalidString`][] if the provided password contains a null byte + /// + /// # Example + /// + /// ```no_run + /// # use nitrokey::Error; + /// + /// # fn try_main() -> Result<(), Error> { + /// let mut manager = nitrokey::take()?; + /// let mut device = manager.connect_storage()?; + /// device.enable_encrypted_volume("123445")?; + /// match device.enable_hidden_volume("hidden-pw") { + /// Ok(()) => println!("Enabled a hidden volume."), + /// Err(err) => eprintln!("Could not enable the hidden volume: {}", err), + /// }; + /// # Ok(()) + /// # } + /// ``` + /// + /// [`enable_encrypted_volume`]: #method.enable_encrypted_volume + /// [`AesDecryptionFailed`]: enum.CommandError.html#variant.AesDecryptionFailed + /// [`InvalidString`]: enum.LibraryError.html#variant.InvalidString + pub fn enable_hidden_volume(&mut self, volume_password: &str) -> Result<(), Error> { + let volume_password = get_cstring(volume_password)?; + get_command_result(unsafe { + nitrokey_sys::NK_unlock_hidden_volume(volume_password.as_ptr()) + }) + } + + /// Disables a hidden storage volume. + /// + /// Once the volume is disabled, it can be no longer accessed as a block device. If no hidden + /// volume has been enabled, this method still returns a success. + /// + /// # Example + /// + /// ```no_run + /// # use nitrokey::Error; + /// + /// fn use_volume() {} + /// + /// # fn try_main() -> Result<(), Error> { + /// let mut manager = nitrokey::take()?; + /// let mut device = manager.connect_storage()?; + /// device.enable_encrypted_volume("123445")?; + /// match device.enable_hidden_volume("hidden-pw") { + /// Ok(()) => { + /// println!("Enabled the hidden volume."); + /// use_volume(); + /// match device.disable_hidden_volume() { + /// Ok(()) => println!("Disabled the hidden volume."), + /// Err(err) => { + /// eprintln!("Could not disable the hidden volume: {}", err); + /// }, + /// }; + /// }, + /// Err(err) => eprintln!("Could not enable the hidden volume: {}", err), + /// }; + /// # Ok(()) + /// # } + /// ``` + pub fn disable_hidden_volume(&mut self) -> Result<(), Error> { + get_command_result(unsafe { nitrokey_sys::NK_lock_hidden_volume() }) + } + + /// Creates a hidden volume. + /// + /// The volume is crated in the given slot and in the given range of the available memory, + /// where `start` is the start position as a percentage of the available memory, and `end` is + /// the end position as a percentage of the available memory. The volume will be protected by + /// the given password. + /// + /// Note that the encrypted and the hidden volumes operate on the same storage area, so using + /// both at the same time might lead to data loss. + /// + /// According to the libnitrokey documentation, this function only works if the encrypted + /// storage has been opened. + /// + /// # Errors + /// + /// - [`AesDecryptionFailed`][] if the encrypted storage has not been opened before calling + /// this method or the AES key has not been built + /// - [`InvalidString`][] if the provided password contains a null byte + /// + /// # Example + /// + /// ```no_run + /// # use nitrokey::Error; + /// + /// # fn try_main() -> Result<(), Error> { + /// let mut manager = nitrokey::take()?; + /// let mut device = manager.connect_storage()?; + /// device.enable_encrypted_volume("123445")?; + /// device.create_hidden_volume(0, 0, 100, "hidden-pw")?; + /// # Ok(()) + /// # } + /// ``` + /// + /// [`AesDecryptionFailed`]: enum.CommandError.html#variant.AesDecryptionFailed + /// [`InvalidString`]: enum.LibraryError.html#variant.InvalidString + pub fn create_hidden_volume( + &mut self, + slot: u8, + start: u8, + end: u8, + password: &str, + ) -> Result<(), Error> { + let password = get_cstring(password)?; + get_command_result(unsafe { + nitrokey_sys::NK_create_hidden_volume(slot, start, end, password.as_ptr()) + }) + } + + /// Sets the access mode of the unencrypted volume. + /// + /// This command will reconnect the unencrypted volume so buffers should be flushed before + /// calling it. Since firmware version v0.51, this command requires the admin PIN. Older + /// firmware versions are not supported. + /// + /// # Errors + /// + /// - [`InvalidString`][] if the provided password contains a null byte + /// - [`WrongPassword`][] if the provided admin password is wrong + /// + /// # Example + /// + /// ```no_run + /// # use nitrokey::Error; + /// use nitrokey::VolumeMode; + /// + /// # fn try_main() -> Result<(), Error> { + /// let mut manager = nitrokey::take()?; + /// let mut device = manager.connect_storage()?; + /// match device.set_unencrypted_volume_mode("12345678", VolumeMode::ReadWrite) { + /// Ok(()) => println!("Set the unencrypted volume to read-write mode."), + /// Err(err) => eprintln!("Could not set the unencrypted volume to read-write mode: {}", err), + /// }; + /// # Ok(()) + /// # } + /// ``` + /// + /// [`InvalidString`]: enum.LibraryError.html#variant.InvalidString + /// [`WrongPassword`]: enum.CommandError.html#variant.WrongPassword + pub fn set_unencrypted_volume_mode( + &mut self, + admin_pin: &str, + mode: VolumeMode, + ) -> Result<(), Error> { + let admin_pin = get_cstring(admin_pin)?; + let result = match mode { + VolumeMode::ReadOnly => unsafe { + nitrokey_sys::NK_set_unencrypted_read_only_admin(admin_pin.as_ptr()) + }, + VolumeMode::ReadWrite => unsafe { + nitrokey_sys::NK_set_unencrypted_read_write_admin(admin_pin.as_ptr()) + }, + }; + get_command_result(result) + } + + /// Sets the access mode of the encrypted volume. + /// + /// This command will reconnect the encrypted volume so buffers should be flushed before + /// calling it. It is only available in firmware version 0.49. + /// + /// # Errors + /// + /// - [`InvalidString`][] if the provided password contains a null byte + /// - [`WrongPassword`][] if the provided admin password is wrong + /// + /// # Example + /// + /// ```no_run + /// # use nitrokey::Error; + /// use nitrokey::VolumeMode; + /// + /// # fn try_main() -> Result<(), Error> { + /// let mut manager = nitrokey::take()?; + /// let mut device = manager.connect_storage()?; + /// match device.set_encrypted_volume_mode("12345678", VolumeMode::ReadWrite) { + /// Ok(()) => println!("Set the encrypted volume to read-write mode."), + /// Err(err) => eprintln!("Could not set the encrypted volume to read-write mode: {}", err), + /// }; + /// # Ok(()) + /// # } + /// ``` + /// + /// [`InvalidString`]: enum.LibraryError.html#variant.InvalidString + /// [`WrongPassword`]: enum.CommandError.html#variant.WrongPassword + pub fn set_encrypted_volume_mode( + &mut self, + admin_pin: &str, + mode: VolumeMode, + ) -> Result<(), Error> { + let admin_pin = get_cstring(admin_pin)?; + let result = match mode { + VolumeMode::ReadOnly => unsafe { + nitrokey_sys::NK_set_encrypted_read_only(admin_pin.as_ptr()) + }, + VolumeMode::ReadWrite => unsafe { + nitrokey_sys::NK_set_encrypted_read_write(admin_pin.as_ptr()) + }, + }; + get_command_result(result) + } + + /// Returns the status of the connected storage device. + /// + /// # Example + /// + /// ```no_run + /// # use nitrokey::Error; + /// + /// fn use_volume() {} + /// + /// # fn try_main() -> Result<(), Error> { + /// let mut manager = nitrokey::take()?; + /// let device = manager.connect_storage()?; + /// match device.get_status() { + /// Ok(status) => { + /// println!("SD card ID: {:#x}", status.serial_number_sd_card); + /// }, + /// Err(err) => eprintln!("Could not get Storage status: {}", err), + /// }; + /// # Ok(()) + /// # } + /// ``` + pub fn get_status(&self) -> Result<StorageStatus, Error> { + let mut raw_status = nitrokey_sys::NK_storage_status { + unencrypted_volume_read_only: false, + unencrypted_volume_active: false, + encrypted_volume_read_only: false, + encrypted_volume_active: false, + hidden_volume_read_only: false, + hidden_volume_active: false, + firmware_version_major: 0, + firmware_version_minor: 0, + firmware_locked: false, + serial_number_sd_card: 0, + serial_number_smart_card: 0, + user_retry_count: 0, + admin_retry_count: 0, + new_sd_card_found: false, + filled_with_random: false, + stick_initialized: false, + }; + let raw_result = unsafe { nitrokey_sys::NK_get_status_storage(&mut raw_status) }; + get_command_result(raw_result).map(|_| StorageStatus::from(raw_status)) + } + + /// Returns the production information for the connected storage device. + /// + /// # Example + /// + /// ```no_run + /// # use nitrokey::Error; + /// + /// fn use_volume() {} + /// + /// # fn try_main() -> Result<(), Error> { + /// let mut manager = nitrokey::take()?; + /// let device = manager.connect_storage()?; + /// match device.get_production_info() { + /// Ok(data) => { + /// println!("SD card ID: {:#x}", data.sd_card.serial_number); + /// println!("SD card size: {} GB", data.sd_card.size); + /// }, + /// Err(err) => eprintln!("Could not get Storage production info: {}", err), + /// }; + /// # Ok(()) + /// # } + /// ``` + pub fn get_production_info(&self) -> Result<StorageProductionInfo, Error> { + let mut raw_data = nitrokey_sys::NK_storage_ProductionTest { + FirmwareVersion_au8: [0, 2], + FirmwareVersionInternal_u8: 0, + SD_Card_Size_u8: 0, + CPU_CardID_u32: 0, + SmartCardID_u32: 0, + SD_CardID_u32: 0, + SC_UserPwRetryCount: 0, + SC_AdminPwRetryCount: 0, + SD_Card_ManufacturingYear_u8: 0, + SD_Card_ManufacturingMonth_u8: 0, + SD_Card_OEM_u16: 0, + SD_WriteSpeed_u16: 0, + SD_Card_Manufacturer_u8: 0, + }; + let raw_result = unsafe { nitrokey_sys::NK_get_storage_production_info(&mut raw_data) }; + get_command_result(raw_result).map(|_| StorageProductionInfo::from(raw_data)) + } + + /// Clears the warning for a new SD card. + /// + /// The Storage status contains a field for a new SD card warning. After a factory reset, the + /// field is set to true. After filling the SD card with random data, it is set to false. + /// This method can be used to set it to false without filling the SD card with random data. + /// + /// # Errors + /// + /// - [`InvalidString`][] if the provided password contains a null byte + /// - [`WrongPassword`][] if the provided admin password is wrong + /// + /// # Example + /// + /// ```no_run + /// # use nitrokey::Error; + /// + /// # fn try_main() -> Result<(), Error> { + /// let mut manager = nitrokey::take()?; + /// let mut device = manager.connect_storage()?; + /// match device.clear_new_sd_card_warning("12345678") { + /// Ok(()) => println!("Cleared the new SD card warning."), + /// Err(err) => eprintln!("Could not set the clear the new SD card warning: {}", err), + /// }; + /// # Ok(()) + /// # } + /// ``` + /// + /// [`InvalidString`]: enum.LibraryError.html#variant.InvalidString + /// [`WrongPassword`]: enum.CommandError.html#variant.WrongPassword + pub fn clear_new_sd_card_warning(&mut self, admin_pin: &str) -> Result<(), Error> { + let admin_pin = get_cstring(admin_pin)?; + get_command_result(unsafe { + nitrokey_sys::NK_clear_new_sd_card_warning(admin_pin.as_ptr()) + }) + } + + /// Blinks the red and green LED alternatively and infinitely until the device is reconnected. + pub fn wink(&mut self) -> Result<(), Error> { + get_command_result(unsafe { nitrokey_sys::NK_wink() }) + } + + /// Exports the firmware to the unencrypted volume. + /// + /// This command requires the admin PIN. The unencrypted volume must be in read-write mode + /// when this command is executed. Otherwise, it will still return `Ok` but not write the + /// firmware. + /// + /// This command unmounts the unencrypted volume if it has been mounted, so all buffers should + /// be flushed. The firmware is written to the `firmware.bin` file on the unencrypted volume. + /// + /// # Errors + /// + /// - [`InvalidString`][] if one of the provided passwords contains a null byte + /// - [`WrongPassword`][] if the admin password is wrong + /// + /// [`InvalidString`]: enum.LibraryError.html#variant.InvalidString + /// [`WrongPassword`]: enum.CommandError.html#variant.WrongPassword + pub fn export_firmware(&mut self, admin_pin: &str) -> Result<(), Error> { + let admin_pin_string = get_cstring(admin_pin)?; + get_command_result(unsafe { nitrokey_sys::NK_export_firmware(admin_pin_string.as_ptr()) }) + } +} + +impl<'a> Drop for Storage<'a> { + fn drop(&mut self) { + unsafe { + nitrokey_sys::NK_logout(); + } + } +} + +impl<'a> Device<'a> for Storage<'a> { + fn into_manager(mut self) -> &'a mut crate::Manager { + self.manager.take().unwrap() + } + + fn get_model(&self) -> Model { + Model::Storage + } +} + +impl<'a> GenerateOtp for Storage<'a> {} + +impl From<nitrokey_sys::NK_storage_ProductionTest> for StorageProductionInfo { + fn from(data: nitrokey_sys::NK_storage_ProductionTest) -> Self { + Self { + firmware_version: FirmwareVersion { + major: data.FirmwareVersion_au8[0], + minor: data.FirmwareVersion_au8[1], + }, + firmware_version_internal: data.FirmwareVersionInternal_u8, + serial_number_cpu: data.CPU_CardID_u32, + sd_card: SdCardData { + serial_number: data.SD_CardID_u32, + size: data.SD_Card_Size_u8, + manufacturing_year: data.SD_Card_ManufacturingYear_u8, + manufacturing_month: data.SD_Card_ManufacturingMonth_u8, + oem: data.SD_Card_OEM_u16, + manufacturer: data.SD_Card_Manufacturer_u8, + }, + } + } +} + +impl From<nitrokey_sys::NK_storage_status> for StorageStatus { + fn from(status: nitrokey_sys::NK_storage_status) -> Self { + StorageStatus { + unencrypted_volume: VolumeStatus { + read_only: status.unencrypted_volume_read_only, + active: status.unencrypted_volume_active, + }, + encrypted_volume: VolumeStatus { + read_only: status.encrypted_volume_read_only, + active: status.encrypted_volume_active, + }, + hidden_volume: VolumeStatus { + read_only: status.hidden_volume_read_only, + active: status.hidden_volume_active, + }, + firmware_version: FirmwareVersion { + major: status.firmware_version_major, + minor: status.firmware_version_minor, + }, + firmware_locked: status.firmware_locked, + serial_number_sd_card: status.serial_number_sd_card, + serial_number_smart_card: status.serial_number_smart_card, + user_retry_count: status.user_retry_count, + admin_retry_count: status.admin_retry_count, + new_sd_card_found: status.new_sd_card_found, + filled_with_random: status.filled_with_random, + stick_initialized: status.stick_initialized, + } + } +} diff --git a/src/device/wrapper.rs b/src/device/wrapper.rs new file mode 100644 index 0000000..a3a18f9 --- /dev/null +++ b/src/device/wrapper.rs @@ -0,0 +1,134 @@ +// 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, + } + } +} |