From aa74f1e98f978b4b740fe8e076768f3df6f35632 Mon Sep 17 00:00:00 2001 From: Robin Krahl Date: Tue, 14 Jan 2020 18:20:25 +0100 Subject: Fix license identifier in examples/*.rs This patch replaces the invalid license identifier CC-0 with the correct identifier CC0-1.0. --- examples/list-devices.rs | 2 +- examples/otp.rs | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/examples/list-devices.rs b/examples/list-devices.rs index 9c14533..47fa054 100644 --- a/examples/list-devices.rs +++ b/examples/list-devices.rs @@ -1,5 +1,5 @@ // Copyright (C) 2020 Robin Krahl -// SPDX-License-Identifier: CC-0 +// SPDX-License-Identifier: CC0-1.0 //! Enumerates all connected Nitrokey devices and prints some information about them. diff --git a/examples/otp.rs b/examples/otp.rs index 819de28..f2c6f3c 100644 --- a/examples/otp.rs +++ b/examples/otp.rs @@ -1,5 +1,5 @@ // Copyright (C) 2020 Robin Krahl -// SPDX-License-Identifier: CC-0 +// SPDX-License-Identifier: CC0-1.0 //! Connects to a Nitrokey device, configures an TOTP slot and generates a one-time password from //! it. -- cgit v1.2.3 From 8ef4e3904688b7050d3ce6b876ceef3d60ebcce8 Mon Sep 17 00:00:00 2001 From: Robin Krahl Date: Tue, 14 Jan 2020 18:28:47 +0100 Subject: Fix link to examples in README docs.rs seems to support only versioned links to source files. This patch replaces the link to docs.rs with a link to git.ireas.org to avoid having to update the link with every release. (Note that the last release already contained a link to the wrong version.) --- README.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/README.md b/README.md index 8ce093e..9001193 100644 --- a/README.md +++ b/README.md @@ -102,7 +102,7 @@ in the `LICENSES` directory. `libnitrokey` is licensed under the [LGPL-3.0][]. `nitrokey-rs` complies with [version 3.0 of the REUSE specification][reuse]. [API reference]: https://docs.rs/nitrokey -[examples]: https://docs.rs/crate/nitrokey/0.4.0/source/examples/ +[examples]: https://git.ireas.org/nitrokey-rs/tree/examples [`nitrocli`]: https://github.com/d-e-s-o/nitrocli/tree/master/nitrocli [Nitrokey udev rules]: https://www.nitrokey.com/documentation/frequently-asked-questions-faq#openpgp-card-not-available [`libnitrokey`]: https://github.com/nitrokey/libnitrokey -- cgit v1.2.3 From c472c53d6ae8a80cc18659006f3df5fbcace7140 Mon Sep 17 00:00:00 2001 From: Robin Krahl Date: Wed, 15 Jan 2020 13:19:13 +0100 Subject: Fix serial number for older Nitrokey Pro in list_devices MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Previously, we assumed that the serial number returned by hidapi contains the Nitrokey serial number as the least significant bytes. As disussed here [0], this is not true for Nitrokey Pro devices with firmware version 0.8 or older: They write the serial number to the most significant bytes instead. This patch update the get_hidapi_serial_number function so that list_devices now returns the correctly formatted and truncated serial number for all Nitrokey Pro devices. It also makes sure that the serial number is lowercase to be consistent with libnitrokey’s formatting. --- CHANGELOG.md | 4 ++++ src/device/mod.rs | 69 +++++++++++++++++++++++++++++++++++++++---------------- 2 files changed, 53 insertions(+), 20 deletions(-) diff --git a/CHANGELOG.md b/CHANGELOG.md index 54ee7d3..a52e043 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -3,6 +3,10 @@ Copyright (C) 2019-2020 Robin Krahl SPDX-License-Identifier: CC0-1.0 --> +# Unreleased +- Fix serial number formatting for Nitrokey Pro devices with firmware 0.8 or + older in the `list_devices` function. + # v0.5.0 (2020-01-14) - List these libnitrokey functions as unsupported: - `NK_change_firmware_password_pro` diff --git a/src/device/mod.rs b/src/device/mod.rs index 16d6b11..0234bf0 100644 --- a/src/device/mod.rs +++ b/src/device/mod.rs @@ -5,7 +5,6 @@ mod pro; mod storage; mod wrapper; -use std::cmp; use std::convert::{TryFrom, TryInto}; use std::ffi; use std::fmt; @@ -120,21 +119,38 @@ impl fmt::Display for DeviceInfo { /// Parses a serial number returned by hidapi and transforms it to the Nitrokey format. /// -/// If the serial number is all zero, this function returns `None`. Otherwise, all leading zeros -/// (except the last eight characters) are stripped and `Some(_)` is returned. If the serial -/// number has less than eight characters, leading zeros are added. +/// If the serial number is all zero, this function returns `None`. Otherwise, it uses the last +/// eight characters. If these are all zero, the first eight characters are used instead. This +/// function also makes sure that the returned string is lowercase, consistent with libnitrokey’s +/// hex string formatting. +/// +/// The reason for this behavior is that the Nitrokey Storage does not report its serial number at +/// all (all zero value), while the Nitrokey Pro with firmware 0.9 or later writes its serial +/// number to the last eight characters. Nitrokey Pro devices with firmware 0.8 or earlier wrote +/// their serial number to the first eight characters. fn get_hidapi_serial_number(serial_number: &str) -> Option { - let mut iter = serial_number.char_indices().skip_while(|(_, c)| *c == '0'); - let first_non_null = iter.next(); + let len = serial_number.len(); + if len < 8 { + // The serial number in the USB descriptor has 12 bytes, we need at least four of them + return None; + } + + let iter = serial_number.char_indices().rev(); + let first_non_null = iter.skip_while(|(_, c)| *c == '0').next(); if let Some((i, _)) = first_non_null { - // keep at least the last 8 characters - let len = serial_number.len(); - let cut = cmp::min(len.saturating_sub(8), i); - let (_, suffix) = serial_number.split_at(cut); - // if necessary, add leading zeros to reach 8 characters - let fill = 8usize.saturating_sub(len); - Some("0".repeat(fill) + suffix) + if len - i < 8 { + // The last eight characters contain at least one non-zero character --> use them + let mut serial_number = serial_number.split_at(len - 8).1.to_string(); + serial_number.make_ascii_lowercase(); + Some(serial_number) + } else { + // The last eight characters are all zero --> use the first eight + let mut serial_number = serial_number.split_at(8).0.to_string(); + serial_number.make_ascii_lowercase(); + Some(serial_number) + } } else { + // The serial number is all zero None } } @@ -615,10 +631,7 @@ mod tests { fn hidapi_serial_number() { assert_eq!(None, get_hidapi_serial_number("")); assert_eq!(None, get_hidapi_serial_number("00000000000000000")); - assert_eq!( - Some("00001234".to_string()), - get_hidapi_serial_number("1234") - ); + assert_eq!(None, get_hidapi_serial_number("1234")); assert_eq!( Some("00001234".to_string()), get_hidapi_serial_number("00001234") @@ -628,12 +641,28 @@ mod tests { get_hidapi_serial_number("000000001234") ); assert_eq!( - Some("100000001234".to_string()), + Some("00001234".to_string()), get_hidapi_serial_number("100000001234") ); assert_eq!( - Some("10000001234".to_string()), - get_hidapi_serial_number("010000001234") + Some("12340000".to_string()), + get_hidapi_serial_number("123400000000") + ); + assert_eq!( + Some("00005678".to_string()), + get_hidapi_serial_number("000000000000000000005678") + ); + assert_eq!( + Some("00001234".to_string()), + get_hidapi_serial_number("000012340000000000000000") + ); + assert_eq!( + Some("0000ffff".to_string()), + get_hidapi_serial_number("00000000000000000000FFFF") + ); + assert_eq!( + Some("0000ffff".to_string()), + get_hidapi_serial_number("00000000000000000000ffff") ); } } -- cgit v1.2.3 From 5e5d5493331305c97f6ffd059246f0cbff4ae696 Mon Sep 17 00:00:00 2001 From: Robin Krahl Date: Wed, 15 Jan 2020 13:22:22 +0100 Subject: Release v0.5.1 This patch release contains a fix for the serial number formatting in the list_devices function for Nitrokey Pro devices with firmware versions older than 0.9. --- CHANGELOG.md | 2 +- Cargo.toml | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/CHANGELOG.md b/CHANGELOG.md index a52e043..cba0e83 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -3,7 +3,7 @@ Copyright (C) 2019-2020 Robin Krahl SPDX-License-Identifier: CC0-1.0 --> -# Unreleased +# v0.5.1 (2020-01-15) - Fix serial number formatting for Nitrokey Pro devices with firmware 0.8 or older in the `list_devices` function. diff --git a/Cargo.toml b/Cargo.toml index 727d47c..59af067 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -3,7 +3,7 @@ [package] name = "nitrokey" -version = "0.5.0" +version = "0.5.1" authors = ["Robin Krahl "] edition = "2018" homepage = "https://code.ireas.org/nitrokey-rs/" -- cgit v1.2.3