xin/modules/lock-action.nix

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{ pkgs, lib, config, ... }:
let
cfg = config.services.lock-action;
dbus-monitor = "${pkgs.dbus}/bin/dbus-monitor";
awk = "${pkgs.gawk}/bin/awk";
ssh-add = "${pkgs.openssh}/bin/ssh-add";
action-script = pkgs.writeScript "action-script" ''
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export DBUS_SESSION_BUS_ADDRESS="$(systemctl --user show-environment | ${awk} -F= '/^DBUS_SESSION_BUS_ADDRESS/ {print $(NF-1) "=" $NF}')"
export SSH_AUTH_SOCK="$(systemctl --user show-environment | ${awk} -F= '/^SSH_AUTH_SOCK/ {print $NF}')"
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echo $DBUS_SESSION_BUS_ADDRESS
echo $SSH_AUTH_SOCK
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${dbus-monitor} --session "type='signal',interface='org.freedesktop.ScreenSaver'" | \
while read x; do
case "$x" in
*"boolean true"*)
echo "Screen Locked";
${ssh-add} -D
/run/wrappers/bin/sudo -K
esac
done
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'';
in
{
options = {
services.lock-action = {
enable = lib.mkEnableOption "Enable lock actions";
};
};
config = lib.mkIf cfg.enable {
systemd.user.services.lock-action = {
enable = true;
script = ''
${action-script}
'';
environment = {
DBUS_SESSION_BUS_ADDRESS = "fake";
SSH_AUTH_SOCK = "fake";
};
wantedBy = [ "graphical-session.target" ];
after = [ "graphical-session.target" ];
};
};
}