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-rw-r--r--src/otp.rs33
1 files changed, 19 insertions, 14 deletions
diff --git a/src/otp.rs b/src/otp.rs
index 6f6bd80..9f0a388 100644
--- a/src/otp.rs
+++ b/src/otp.rs
@@ -151,27 +151,27 @@ pub trait ConfigureOtp {
/// Provides methods to generate OTP codes and to query OTP slots on a Nitrokey
/// device.
pub trait GenerateOtp {
- /// Sets the time on the Nitrokey. This command may set the time to arbitrary values. `time`
- /// is the number of seconds since January 1st, 1970 (Unix timestamp).
+ /// Sets the time on the Nitrokey.
+ ///
+ /// `time` is the number of seconds since January 1st, 1970 (Unix timestamp). Unless `force`
+ /// is set to `true`, this command fails if the timestamp on the device is larger than the
+ /// given timestamp or if it is zero.
///
/// The time is used for TOTP generation (see [`get_totp_code`][]).
///
/// # Example
///
- /// ```ignore
- /// extern crate chrono;
- ///
- /// use chrono::Utc;
- /// use nitrokey::Device;
+ /// ```no_run
+ /// use std::time;
+ /// use nitrokey::GenerateOtp;
/// # use nitrokey::CommandError;
///
/// # fn try_main() -> Result<(), CommandError> {
/// let device = nitrokey::connect()?;
- /// let time = Utc::now().timestamp();
- /// if time < 0 {
- /// println!("Timestamps before 1970-01-01 are not supported!");
- /// } else {
- /// device.set_time(time as u64);
+ /// let time = time::SystemTime::now().duration_since(time::UNIX_EPOCH);
+ /// match time {
+ /// Ok(time) => device.set_time(time.as_secs(), false)?,
+ /// Err(_) => println!("The system time is before the Unix epoch!"),
/// }
/// # Ok(())
/// # }
@@ -183,8 +183,13 @@ pub trait GenerateOtp {
///
/// [`get_totp_code`]: #method.get_totp_code
/// [`Timestamp`]: enum.CommandError.html#variant.Timestamp
- fn set_time(&self, time: u64) -> Result<(), CommandError> {
- unsafe { get_command_result(nitrokey_sys::NK_totp_set_time(time)) }
+ fn set_time(&self, time: u64, force: bool) -> Result<(), CommandError> {
+ let result = if force {
+ unsafe { nitrokey_sys::NK_totp_set_time(time) }
+ } else {
+ unsafe { nitrokey_sys::NK_totp_set_time_soft(time) }
+ };
+ get_command_result(result)
}
/// Returns the name of the given HOTP slot.