New version of pcsc-lite: 1.9.6
I just released a new version of
pcsc-lite 1.9.6.
pcsc-lite is a Free Software implementation of the PC/SC (or WinSCard) API for
Unix systems.
Changes:
1.9.6: Ludovic Rousseau11 May 2022
- do not fail reader removal in some specific cases (USB/Thunderbolt port)
- improve documentation regarding /etc/reader.conf.d/
-
SCardGetStatusChange: speedup the case
DISABLE_AUTO_POWER_ON - configure:
-
add
--disable-strictoption
By default the compiler arguments are now:-Wall -Wextra -Wno-unused-parameter -Werror ${CFLAGS} - fail if flex is not found
- fix different data races
-
pcscdaemon: -v displays internal constants values:
MAX_READERNAME&PCSCLITE_MAX_READERS_CONTEXTS - Some other minor improvements
Reader removal issue
The problem with reader removal is that, with some hardware configurations,
the USB bus is removed when the USB device is disconnected. You can see that
using the libusb command.
Before connecting the device:
Bus 002 Device 002: ID 0bda:0328 Realtek Semiconductor Corp. USB3.0-CRW Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 1bcf:2c6b Sunplus Innovation Technology Inc. HD WebCam Bus 001 Device 005: ID 1044:7a39 Chu Yuen Enterprise Co., Ltd USB-HID Keyboard Bus 001 Device 004: ID 8087:0a2b Intel Corp. Bluetooth wireless interface Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
After connecting the Yubikey token
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 003 Device 002: ID 1050:0407 Yubico.com Yubikey 4/5 OTP+U2F+CCID Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 002 Device 002: ID 0bda:0328 Realtek Semiconductor Corp. USB3.0-CRW Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 1bcf:2c6b Sunplus Innovation Technology Inc. HD WebCam Bus 001 Device 005: ID 1044:7a39 Chu Yuen Enterprise Co., Ltd USB-HID Keyboard Bus 001 Device 004: ID 8087:0a2b Intel Corp. Bluetooth wireless interface Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
The new lines are:
- Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
- Bus 003 Device 002: ID 1050:0407 Yubico.com Yubikey 4/5 OTP+U2F+CCID
- Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
2 new USB buses are created 003 & 004. The Yubikey token is connected on the bus 003.
After removing the Yubikey
Bus 002 Device 002: ID 0bda:0328 Realtek Semiconductor Corp. USB3.0-CRW Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 003: ID 1bcf:2c6b Sunplus Innovation Technology Inc. HD WebCam Bus 001 Device 005: ID 1044:7a39 Chu Yuen Enterprise Co., Ltd USB-HID Keyboard Bus 001 Device 004: ID 8087:0a2b Intel Corp. Bluetooth wireless interface Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
The USB buses 3 & 4 have disappeared. This confused pcsc-lite. The token was not removed for pcsc-lite and caused the generation of log errors. This is now fixed.