omarchy/bin/omarchy-fido2-setup

#!/bin/bash

yay -S --noconfirm --needed libfido2 pam-u2f

# Check if the user doesn't want sudo
while [[ $# -gt 0 ]]; do
  case $1 in
  --no-sudo) exit 0 ;;
  *)
    echo "Unknown option: $1 \n --no-sudo is the only option"
    exit 1
    ;;
  esac
  shift
done

tokens=$(fido2-token -L)
if [ -z "$tokens" ]; then
  echo -e "\e[31m\nNo fido2 device detected. Plug it in, you may have to unlock it as well\e[0m"
else

  # Create the pamu2fcfg file
  if [ ! -f /etc/fido2/fido2 ]; then
    sudo mkdir -p /etc/fido2
    echo -e "\e[32m\nLet's setup your device, confirm on the device now\n\e[0m"
    pamu2fcfg >/tmp/fido2 # This needs to run as the user
    sudo mv /tmp/fido2 /etc/fido2/fido2
  fi

  # Add fido2 auth as an option for sudo
  if ! grep -q pam_u2f.so /etc/pam.d/sudo; then
    sudo sed -i '1i auth    sufficient pam_u2f.so cue authfile=/etc/fido2/fido2' /etc/pam.d/sudo
  fi
fi