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The CommandError::Unknown variant, which is used whenever a reported
error code is not known, makes it close to impossible to determine the
root cause of, say, a one-off error, because all information explaining
what went wrong is discarded.
With this change we adjust the Unknown variant to include the error
report. In addition, we introduce a new CommandError variant, Undefined,
that is used when no error code is available.
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We switched to rand::thread_rng() which cannot fail. Therefore the
CommandError::RngError is no longer needed and removed in this patch.
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As these three enums are scalar values, this patch derives the Clone and
Copy traits for them. This should avoid unnecessary allocations and
reduce the memory footprint.
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This patch updates the rand dependecy to version 0.6. It also replaces
the OsRng, which is guaranteed to use OS/hardware entropy, with the
thread_rng, which is likely to use OS/hardware entropy as a seed. The
choice of RNG and the handling of password should be reviewed at a later
point.
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This patch makes hidden life time parameters explicit to fix
elided-lifetime-in-path compiler warnings.
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Old libnitrokey versions could return pointers to both statically and
dynamically allocated strings for functions that return strings. This
has been fixed in libnitrokey commit 7a8550d (included in v3.4). This
patch removes the old workaround and always frees the return value of
functions returning a string pointer.
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The std::fmt::Display implementation provides a human-readable error
message for a CommandError. It is intended to be used in error
messages displayed to the user.
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The new get_cstring method in util returns a Result<CString,
CommandError>, so mast callers can just use the ? operator to unwrap the
result instead of cumbersome unwrapping code.
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The Result enum is more idiomatic and easier to use than our custom
CommandStatus enum with the same structure. This is especially true for
the try operator ?.
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This patch adds the Storage struct and the test-storage feature. It
also enables all currently supported Pro commands for the Storage.
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Now, the documentation clearly states the purpose of each log level.
Also, the documentation for set_log_level is corrected: libnitrokey
always prints to stderr.
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In future versions, we want to support not only the Nitrokey Pro, but
also the Nitrokey Storage. This requires a better code layout. This
patch introduces two main changes:
First, the OTP-specific methods are moved from the Device trait and the
AdminAuthenticatedDevice struct to the functionality-based traits
ConfigureOtp and GenerateOtp. This will hopefully make it easier to
integrate the Nitrokey Storage.
Secondly, the code is split into separate modules. These modules are
currently all private and re-exported in the lib module, but we can
consider making them public in the future.
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