// commands.rs
// *************************************************************************
// * Copyright (C) 2018-2019 Daniel Mueller (deso@posteo.net) *
// * *
// * This program is free software: you can redistribute it and/or modify *
// * it under the terms of the GNU General Public License as published by *
// * the Free Software Foundation, either version 3 of the License, or *
// * (at your option) any later version. *
// * *
// * This program is distributed in the hope that it will be useful, *
// * but WITHOUT ANY WARRANTY; without even the implied warranty of *
// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
// * GNU General Public License for more details. *
// * *
// * You should have received a copy of the GNU General Public License *
// * along with this program. If not, see . *
// *************************************************************************
use std::fmt;
use std::result;
use std::thread;
use std::time;
use std::u8;
use libc::sync;
use nitrokey::ConfigureOtp;
use nitrokey::Device;
use nitrokey::GenerateOtp;
use crate::args;
use crate::error::Error;
use crate::pinentry;
use crate::Result;
const NITROKEY_DEFAULT_ADMIN_PIN: &str = "12345678";
/// Create an `error::Error` with an error message of the format `msg: err`.
fn get_error(msg: &'static str, err: nitrokey::CommandError) -> Error {
Error::CommandError(Some(msg), err)
}
/// Set `libnitrokey`'s log level based on the execution context's verbosity.
fn set_log_level(ctx: &mut args::ExecCtx<'_>) {
let log_lvl = match ctx.verbosity {
// The error log level is what libnitrokey uses by default. As such,
// there is no harm in us setting that as well when the user did not
// ask for higher verbosity.
0 => nitrokey::LogLevel::Error,
1 => nitrokey::LogLevel::Warning,
2 => nitrokey::LogLevel::Info,
3 => nitrokey::LogLevel::DebugL1,
4 => nitrokey::LogLevel::Debug,
_ => nitrokey::LogLevel::DebugL2,
};
nitrokey::set_log_level(log_lvl);
}
/// Connect to any Nitrokey device and return it.
fn get_device(ctx: &mut args::ExecCtx<'_>) -> Result {
set_log_level(ctx);
match ctx.model {
Some(model) => nitrokey::connect_model(model.into()),
None => nitrokey::connect(),
}
.map_err(|_| Error::from("Nitrokey device not found"))
}
/// Connect to a Nitrokey Storage device and return it.
fn get_storage_device(ctx: &mut args::ExecCtx<'_>) -> Result {
set_log_level(ctx);
if let Some(model) = ctx.model {
if model != args::DeviceModel::Storage {
return Err(Error::from(
"This command is only available on the Nitrokey Storage",
));
}
}
nitrokey::Storage::connect().or_else(|_| Err(Error::from("Nitrokey Storage device not found")))
}
/// Open the password safe on the given device.
fn get_password_safe<'dev, D>(
ctx: &mut args::ExecCtx<'_>,
device: &'dev D,
) -> Result>
where
D: Device,
{
let pin_entry = pinentry::PinEntry::from(pinentry::PinType::User, device)?;
try_with_pin_and_data(
ctx,
&pin_entry,
"Could not access the password safe",
(),
|_, pin| device.get_password_safe(pin).map_err(|err| ((), err)),
)
}
/// Authenticate the given device using the given PIN type and operation.
///
/// If an error occurs, the error message `msg` is used.
fn authenticate(
ctx: &mut args::ExecCtx<'_>,
device: D,
pin_type: pinentry::PinType,
msg: &'static str,
op: F,
) -> Result
where
D: Device,
F: Fn(D, &str) -> result::Result,
{
let pin_entry = pinentry::PinEntry::from(pin_type, &device)?;
try_with_pin_and_data(ctx, &pin_entry, msg, device, op)
}
/// Authenticate the given device with the user PIN.
fn authenticate_user(ctx: &mut args::ExecCtx<'_>, device: T) -> Result>
where
T: Device,
{
authenticate(
ctx,
device,
pinentry::PinType::User,
"Could not authenticate as user",
|device, pin| device.authenticate_user(pin),
)
}
/// Authenticate the given device with the admin PIN.
fn authenticate_admin(ctx: &mut args::ExecCtx<'_>, device: T) -> Result>
where
T: Device,
{
authenticate(
ctx,
device,
pinentry::PinType::Admin,
"Could not authenticate as admin",
|device, pin| device.authenticate_admin(pin),
)
}
/// Return a string representation of the given volume status.
fn get_volume_status(status: &nitrokey::VolumeStatus) -> &'static str {
if status.active {
if status.read_only {
"read-only"
} else {
"active"
}
} else {
"inactive"
}
}
/// Try to execute the given function with a pin queried using pinentry.
///
/// This function will query the pin of the given type from the user
/// using pinentry. It will then execute the given function. If this
/// function returns a result, the result will be passed on. If it
/// returns a `CommandError::WrongPassword`, the user will be asked
/// again to enter the pin. Otherwise, this function returns an error
/// containing the given error message. The user will have at most
/// three tries to get the pin right.
///
/// The data argument can be used to pass on data between the tries. At
/// the first try, this function will call `op` with `data`. At the
/// second or third try, it will call `op` with the data returned by the
/// previous call to `op`.
fn try_with_pin_and_data_with_pinentry(
ctx: &mut args::ExecCtx<'_>,
pin_entry: &pinentry::PinEntry,
msg: &'static str,
data: D,
op: F,
) -> Result
where
F: Fn(D, &str) -> result::Result,
{
let mut data = data;
let mut retry = 3;
let mut error_msg = None;
loop {
let pin = pinentry::inquire(ctx, pin_entry, pinentry::Mode::Query, error_msg)?;
match op(data, &pin) {
Ok(result) => return Ok(result),
Err((new_data, err)) => match err {
nitrokey::CommandError::WrongPassword => {
pinentry::clear(pin_entry)?;
retry -= 1;
if retry > 0 {
error_msg = Some("Wrong password, please reenter");
data = new_data;
continue;
}
return Err(get_error(msg, err));
}
err => return Err(get_error(msg, err)),
},
};
}
}
/// Try to execute the given function with a PIN.
fn try_with_pin_and_data(
ctx: &mut args::ExecCtx<'_>,
pin_entry: &pinentry::PinEntry,
msg: &'static str,
data: D,
op: F,
) -> Result
where
F: Fn(D, &str) -> result::Result,
{
let pin = match pin_entry.pin_type() {
pinentry::PinType::Admin => &ctx.admin_pin,
pinentry::PinType::User => &ctx.user_pin,
};
if let Some(pin) = pin {
let pin = pin.to_str().ok_or_else(|| {
Error::Error(format!(
"{}: Failed to read PIN due to invalid Unicode data",
msg
))
})?;
op(data, &pin).map_err(|(_, err)| get_error(msg, err))
} else {
try_with_pin_and_data_with_pinentry(ctx, pin_entry, msg, data, op)
}
}
/// Try to execute the given function with a pin queried using pinentry.
///
/// This function behaves exactly as `try_with_pin_and_data`, but
/// it refrains from passing any data to it.
fn try_with_pin(
ctx: &mut args::ExecCtx<'_>,
pin_entry: &pinentry::PinEntry,
msg: &'static str,
op: F,
) -> Result<()>
where
F: Fn(&str) -> result::Result<(), nitrokey::CommandError>,
{
try_with_pin_and_data(ctx, pin_entry, msg, (), |data, pin| {
op(pin).map_err(|err| (data, err))
})
}
/// Query and pretty print the status that is common to all Nitrokey devices.
fn print_status(
ctx: &mut args::ExecCtx<'_>,
model: &'static str,
device: &nitrokey::DeviceWrapper,
) -> Result<()> {
let serial_number = device
.get_serial_number()
.map_err(|err| get_error("Could not query the serial number", err))?;
println!(
ctx,
r#"Status:
model: {model}
serial number: 0x{id}
firmware version: {fwv0}.{fwv1}
user retry count: {urc}
admin retry count: {arc}"#,
model = model,
id = serial_number,
fwv0 = device.get_major_firmware_version(),
fwv1 = device.get_minor_firmware_version(),
urc = device.get_user_retry_count(),
arc = device.get_admin_retry_count(),
)?;
Ok(())
}
/// Inquire the status of the nitrokey.
pub fn status(ctx: &mut args::ExecCtx<'_>) -> Result<()> {
let device = get_device(ctx)?;
let model = match device {
nitrokey::DeviceWrapper::Pro(_) => "Pro",
nitrokey::DeviceWrapper::Storage(_) => "Storage",
};
print_status(ctx, model, &device)
}
/// Perform a factory reset.
pub fn reset(ctx: &mut args::ExecCtx<'_>) -> Result<()> {
let device = get_device(ctx)?;
let pin_entry = pinentry::PinEntry::from(pinentry::PinType::Admin, &device)?;
// To force the user to enter the admin PIN before performing a
// factory reset, we clear the pinentry cache for the admin PIN.
pinentry::clear(&pin_entry)?;
try_with_pin(ctx, &pin_entry, "Factory reset failed", |pin| {
device.factory_reset(&pin)?;
// Work around for a timing issue between factory_reset and
// build_aes_key, see
// https://github.com/Nitrokey/nitrokey-storage-firmware/issues/80
thread::sleep(time::Duration::from_secs(3));
// Another work around for spurious WrongPassword returns of
// build_aes_key after a factory reset on Pro devices.
// https://github.com/Nitrokey/nitrokey-pro-firmware/issues/57
let _ = device.get_user_retry_count();
device.build_aes_key(NITROKEY_DEFAULT_ADMIN_PIN)
})
}
/// Open the encrypted volume on the nitrokey.
pub fn storage_open(ctx: &mut args::ExecCtx<'_>) -> Result<()> {
let device = get_storage_device(ctx)?;
let pin_entry = pinentry::PinEntry::from(pinentry::PinType::User, &device)?;
// We may forcefully close a hidden volume, if active, so be sure to
// flush caches to disk.
unsafe { sync() };
try_with_pin(ctx, &pin_entry, "Opening encrypted volume failed", |pin| {
device.enable_encrypted_volume(&pin)
})
}
/// Close the previously opened encrypted volume.
pub fn storage_close(ctx: &mut args::ExecCtx<'_>) -> Result<()> {
// Flush all filesystem caches to disk. We are mostly interested in
// making sure that the encrypted volume on the nitrokey we are
// about to close is not closed while not all data was written to
// it.
unsafe { sync() };
get_storage_device(ctx)?
.disable_encrypted_volume()
.map_err(|err| get_error("Closing encrypted volume failed", err))
}
/// Create a hidden volume.
pub fn storage_hidden_create(
ctx: &mut args::ExecCtx<'_>,
slot: u8,
start: u8,
end: u8,
) -> Result<()> {
let device = get_storage_device(ctx)?;
let pwd_entry = pinentry::PwdEntry::from(&device)?;
let pwd = if let Some(pwd) = &ctx.password {
pwd
.to_str()
.ok_or_else(|| Error::from("Failed to read password: invalid Unicode data found"))
.map(ToOwned::to_owned)
} else {
pinentry::choose(ctx, &pwd_entry)
}?;
device
.create_hidden_volume(slot, start, end, &pwd)
.map_err(|err| get_error("Creating hidden volume failed", err))
}
/// Open a hidden volume.
pub fn storage_hidden_open(ctx: &mut args::ExecCtx<'_>) -> Result<()> {
let device = get_storage_device(ctx)?;
let pwd_entry = pinentry::PwdEntry::from(&device)?;
let pwd = if let Some(pwd) = &ctx.password {
pwd
.to_str()
.ok_or_else(|| Error::from("Failed to read password: invalid Unicode data found"))
.map(ToOwned::to_owned)
} else {
pinentry::inquire(ctx, &pwd_entry, pinentry::Mode::Query, None)
}?;
// We may forcefully close an encrypted volume, if active, so be sure
// to flush caches to disk.
unsafe { sync() };
device
.enable_hidden_volume(&pwd)
.map_err(|err| get_error("Opening hidden volume failed", err))
}
/// Close a previously opened hidden volume.
pub fn storage_hidden_close(ctx: &mut args::ExecCtx<'_>) -> Result<()> {
unsafe { sync() };
get_storage_device(ctx)?
.disable_hidden_volume()
.map_err(|err| get_error("Closing hidden volume failed", err))
}
/// Pretty print the status of a Nitrokey Storage.
fn print_storage_status(
ctx: &mut args::ExecCtx<'_>,
status: &nitrokey::StorageStatus,
) -> Result<()> {
println!(
ctx,
r#"Status:
SD card ID: {id:#x}
firmware: {fw}
storage keys: {sk}
volumes:
unencrypted: {vu}
encrypted: {ve}
hidden: {vh}"#,
id = status.serial_number_sd_card,
fw = if status.firmware_locked {
"locked"
} else {
"unlocked"
},
sk = if status.stick_initialized {
"created"
} else {
"not created"
},
vu = get_volume_status(&status.unencrypted_volume),
ve = get_volume_status(&status.encrypted_volume),
vh = get_volume_status(&status.hidden_volume),
)?;
Ok(())
}
/// Connect to and pretty print the status of a Nitrokey Storage.
pub fn storage_status(ctx: &mut args::ExecCtx<'_>) -> Result<()> {
let device = get_storage_device(ctx)?;
let status = device
.get_status()
.map_err(|err| get_error("Getting Storage status failed", err))?;
print_storage_status(ctx, &status)
}
/// Return a String representation of the given Option.
fn format_option(option: Option) -> String {
match option {
Some(value) => format!("{}", value),
None => "not set".to_string(),
}
}
/// Read the Nitrokey configuration.
pub fn config_get(ctx: &mut args::ExecCtx<'_>) -> Result<()> {
let config = get_device(ctx)?
.get_config()
.map_err(|err| get_error("Could not get configuration", err))?;
println!(
ctx,
r#"Config:
numlock binding: {nl}
capslock binding: {cl}
scrollock binding: {sl}
require user PIN for OTP: {otp}"#,
nl = format_option(config.numlock),
cl = format_option(config.capslock),
sl = format_option(config.scrollock),
otp = config.user_password,
)?;
Ok(())
}
/// Write the Nitrokey configuration.
pub fn config_set(
ctx: &mut args::ExecCtx<'_>,
numlock: args::ConfigOption,
capslock: args::ConfigOption,
scrollock: args::ConfigOption,
user_password: Option,
) -> Result<()> {
let device = get_device(ctx)?;
let device = authenticate_admin(ctx, device)?;
let config = device
.get_config()
.map_err(|err| get_error("Could not get configuration", err))?;
let config = nitrokey::Config {
numlock: numlock.or(config.numlock),
capslock: capslock.or(config.capslock),
scrollock: scrollock.or(config.scrollock),
user_password: user_password.unwrap_or(config.user_password),
};
device
.write_config(config)
.map_err(|err| get_error("Could not set configuration", err))
}
/// Lock the Nitrokey device.
pub fn lock(ctx: &mut args::ExecCtx<'_>) -> Result<()> {
get_device(ctx)?
.lock()
.map_err(|err| get_error("Getting Storage status failed", err))
}
fn get_otp(slot: u8, algorithm: args::OtpAlgorithm, device: &T) -> Result {
match algorithm {
args::OtpAlgorithm::Hotp => device.get_hotp_code(slot),
args::OtpAlgorithm::Totp => device.get_totp_code(slot),
}
.map_err(|err| get_error("Could not generate OTP", err))
}
fn get_unix_timestamp() -> Result {
time::SystemTime::now()
.duration_since(time::UNIX_EPOCH)
.or_else(|_| Err(Error::from("Current system time is before the Unix epoch")))
.map(|duration| duration.as_secs())
}
/// Generate a one-time password on the Nitrokey device.
pub fn otp_get(
ctx: &mut args::ExecCtx<'_>,
slot: u8,
algorithm: args::OtpAlgorithm,
time: Option,
) -> Result<()> {
let device = get_device(ctx)?;
if algorithm == args::OtpAlgorithm::Totp {
device
.set_time(
match time {
Some(time) => time,
None => get_unix_timestamp()?,
},
true,
)
.map_err(|err| get_error("Could not set time", err))?;
}
let config = device
.get_config()
.map_err(|err| get_error("Could not get device configuration", err))?;
let otp = if config.user_password {
let user = authenticate_user(ctx, device)?;
get_otp(slot, algorithm, &user)
} else {
get_otp(slot, algorithm, &device)
}?;
println!(ctx, "{}", otp)?;
Ok(())
}
/// Format a byte vector as a hex string.
fn format_bytes(bytes: &[u8]) -> String {
bytes
.iter()
.map(|c| format!("{:x}", c))
.collect::>()
.join("")
}
/// Prepare an ASCII secret string for libnitrokey.
///
/// libnitrokey expects secrets as hexadecimal strings. This function transforms an ASCII string
/// into a hexadecimal string or returns an error if the given string contains non-ASCII
/// characters.
fn prepare_ascii_secret(secret: &str) -> Result {
if secret.is_ascii() {
Ok(format_bytes(&secret.as_bytes()))
} else {
Err(Error::from(
"The given secret is not an ASCII string despite --format ascii being set",
))
}
}
/// Prepare a base32 secret string for libnitrokey.
fn prepare_base32_secret(secret: &str) -> Result {
base32::decode(base32::Alphabet::RFC4648 { padding: false }, secret)
.map(|vec| format_bytes(&vec))
.ok_or_else(|| Error::from("Could not parse base32 secret"))
}
/// Configure a one-time password slot on the Nitrokey device.
pub fn otp_set(
ctx: &mut args::ExecCtx<'_>,
data: nitrokey::OtpSlotData,
algorithm: args::OtpAlgorithm,
counter: u64,
time_window: u16,
secret_format: args::OtpSecretFormat,
) -> Result<()> {
let secret = match secret_format {
args::OtpSecretFormat::Ascii => prepare_ascii_secret(&data.secret)?,
args::OtpSecretFormat::Base32 => prepare_base32_secret(&data.secret)?,
args::OtpSecretFormat::Hex => data.secret,
};
let data = nitrokey::OtpSlotData { secret, ..data };
let device = get_device(ctx)?;
let device = authenticate_admin(ctx, device)?;
match algorithm {
args::OtpAlgorithm::Hotp => device.write_hotp_slot(data, counter),
args::OtpAlgorithm::Totp => device.write_totp_slot(data, time_window),
}
.map_err(|err| get_error("Could not write OTP slot", err))?;
Ok(())
}
/// Clear an OTP slot.
pub fn otp_clear(
ctx: &mut args::ExecCtx<'_>,
slot: u8,
algorithm: args::OtpAlgorithm,
) -> Result<()> {
let device = get_device(ctx)?;
let device = authenticate_admin(ctx, device)?;
match algorithm {
args::OtpAlgorithm::Hotp => device.erase_hotp_slot(slot),
args::OtpAlgorithm::Totp => device.erase_totp_slot(slot),
}
.map_err(|err| get_error("Could not clear OTP slot", err))?;
Ok(())
}
fn print_otp_status(
ctx: &mut args::ExecCtx<'_>,
algorithm: args::OtpAlgorithm,
device: &nitrokey::DeviceWrapper,
all: bool,
) -> Result<()> {
let mut slot: u8 = 0;
loop {
let result = match algorithm {
args::OtpAlgorithm::Hotp => device.get_hotp_slot_name(slot),
args::OtpAlgorithm::Totp => device.get_totp_slot_name(slot),
};
slot = match slot.checked_add(1) {
Some(slot) => slot,
None => {
return Err(Error::from("Integer overflow when iterating OTP slots"));
}
};
let name = match result {
Ok(name) => name,
Err(nitrokey::CommandError::InvalidSlot) => return Ok(()),
Err(nitrokey::CommandError::SlotNotProgrammed) => {
if all {
"[not programmed]".to_string()
} else {
continue;
}
}
Err(err) => return Err(get_error("Could not check OTP slot", err)),
};
println!(ctx, "{}\t{}\t{}", algorithm, slot - 1, name)?;
}
}
/// Print the status of the OTP slots.
pub fn otp_status(ctx: &mut args::ExecCtx<'_>, all: bool) -> Result<()> {
let device = get_device(ctx)?;
println!(ctx, "alg\tslot\tname")?;
print_otp_status(ctx, args::OtpAlgorithm::Hotp, &device, all)?;
print_otp_status(ctx, args::OtpAlgorithm::Totp, &device, all)?;
Ok(())
}
/// Clear the PIN stored by various operations.
pub fn pin_clear(ctx: &mut args::ExecCtx<'_>) -> Result<()> {
let device = get_device(ctx)?;
pinentry::clear(&pinentry::PinEntry::from(
pinentry::PinType::Admin,
&device,
)?)?;
pinentry::clear(&pinentry::PinEntry::from(pinentry::PinType::User, &device)?)?;
Ok(())
}
/// Choose a PIN of the given type.
///
/// If the user has set the respective environment variable for the
/// given PIN type, it will be used.
fn choose_pin(
ctx: &mut args::ExecCtx<'_>,
pin_entry: &pinentry::PinEntry,
new: bool,
) -> Result {
let new_pin = match pin_entry.pin_type() {
pinentry::PinType::Admin => {
if new {
&ctx.new_admin_pin
} else {
&ctx.admin_pin
}
}
pinentry::PinType::User => {
if new {
&ctx.new_user_pin
} else {
&ctx.user_pin
}
}
};
if let Some(new_pin) = new_pin {
new_pin
.to_str()
.ok_or_else(|| Error::from("Failed to read PIN: invalid Unicode data found"))
.map(ToOwned::to_owned)
} else {
pinentry::choose(ctx, pin_entry)
}
}
/// Change a PIN.
pub fn pin_set(ctx: &mut args::ExecCtx<'_>, pin_type: pinentry::PinType) -> Result<()> {
let device = get_device(ctx)?;
let pin_entry = pinentry::PinEntry::from(pin_type, &device)?;
let new_pin = choose_pin(ctx, &pin_entry, true)?;
try_with_pin(
ctx,
&pin_entry,
"Could not change the PIN",
|current_pin| match pin_type {
pinentry::PinType::Admin => device.change_admin_pin(¤t_pin, &new_pin),
pinentry::PinType::User => device.change_user_pin(¤t_pin, &new_pin),
},
)
}
/// Unblock and reset the user PIN.
pub fn pin_unblock(ctx: &mut args::ExecCtx<'_>) -> Result<()> {
let device = get_device(ctx)?;
let pin_entry = pinentry::PinEntry::from(pinentry::PinType::User, &device)?;
let user_pin = choose_pin(ctx, &pin_entry, false)?;
let pin_entry = pinentry::PinEntry::from(pinentry::PinType::Admin, &device)?;
try_with_pin(
ctx,
&pin_entry,
"Could not unblock the user PIN",
|admin_pin| device.unlock_user_pin(&admin_pin, &user_pin),
)
}
fn print_pws_data(
ctx: &mut args::ExecCtx<'_>,
description: &'static str,
result: result::Result,
quiet: bool,
) -> Result<()> {
let value = result.map_err(|err| get_error("Could not access PWS slot", err))?;
if quiet {
println!(ctx, "{}", value)?;
} else {
println!(ctx, "{} {}", description, value)?;
}
Ok(())
}
fn check_slot(pws: &nitrokey::PasswordSafe<'_>, slot: u8) -> Result<()> {
if slot >= nitrokey::SLOT_COUNT {
return Err(nitrokey::CommandError::InvalidSlot.into());
}
let status = pws
.get_slot_status()
.map_err(|err| get_error("Could not read PWS slot status", err))?;
if status[slot as usize] {
Ok(())
} else {
Err(get_error(
"Could not access PWS slot",
nitrokey::CommandError::SlotNotProgrammed,
))
}
}
/// Read a PWS slot.
pub fn pws_get(
ctx: &mut args::ExecCtx<'_>,
slot: u8,
show_name: bool,
show_login: bool,
show_password: bool,
quiet: bool,
) -> Result<()> {
let device = get_device(ctx)?;
let pws = get_password_safe(ctx, &device)?;
check_slot(&pws, slot)?;
let show_all = !show_name && !show_login && !show_password;
if show_all || show_name {
print_pws_data(ctx, "name: ", pws.get_slot_name(slot), quiet)?;
}
if show_all || show_login {
print_pws_data(ctx, "login: ", pws.get_slot_login(slot), quiet)?;
}
if show_all || show_password {
print_pws_data(ctx, "password:", pws.get_slot_password(slot), quiet)?;
}
Ok(())
}
/// Write a PWS slot.
pub fn pws_set(
ctx: &mut args::ExecCtx<'_>,
slot: u8,
name: &str,
login: &str,
password: &str,
) -> Result<()> {
let device = get_device(ctx)?;
let pws = get_password_safe(ctx, &device)?;
pws
.write_slot(slot, name, login, password)
.map_err(|err| get_error("Could not write PWS slot", err))
}
/// Clear a PWS slot.
pub fn pws_clear(ctx: &mut args::ExecCtx<'_>, slot: u8) -> Result<()> {
let device = get_device(ctx)?;
let pws = get_password_safe(ctx, &device)?;
pws
.erase_slot(slot)
.map_err(|err| get_error("Could not clear PWS slot", err))
}
fn print_pws_slot(
ctx: &mut args::ExecCtx<'_>,
pws: &nitrokey::PasswordSafe<'_>,
slot: usize,
programmed: bool,
) -> Result<()> {
if slot > u8::MAX as usize {
return Err(Error::from("Invalid PWS slot number"));
}
let slot = slot as u8;
let name = if programmed {
pws
.get_slot_name(slot)
.map_err(|err| get_error("Could not read PWS slot", err))?
} else {
"[not programmed]".to_string()
};
println!(ctx, "{}\t{}", slot, name)?;
Ok(())
}
/// Print the status of all PWS slots.
pub fn pws_status(ctx: &mut args::ExecCtx<'_>, all: bool) -> Result<()> {
let device = get_device(ctx)?;
let pws = get_password_safe(ctx, &device)?;
let slots = pws
.get_slot_status()
.map_err(|err| get_error("Could not read PWS slot status", err))?;
println!(ctx, "slot\tname")?;
for (i, &value) in slots
.into_iter()
.enumerate()
.filter(|(_, &value)| all || value)
{
print_pws_slot(ctx, &pws, i, value)?;
}
Ok(())
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn prepare_secret_ascii() {
let result = prepare_ascii_secret("12345678901234567890");
assert_eq!(
"3132333435363738393031323334353637383930".to_string(),
result.unwrap()
);
}
#[test]
fn prepare_secret_non_ascii() {
let result = prepare_ascii_secret("Österreich");
assert!(result.is_err());
}
}