#!/bin/sh

. /lib/live/config.sh

## live-config(7) - System Configuration Components
## Copyright (C) 2016-2020 The Debian Live team
## Copyright (C) 2006-2015 Daniel Baumann <mail@daniel-baumann.ch>
##
## This program comes with ABSOLUTELY NO WARRANTY; for details see COPYING.
## This is free software, and you are welcome to redistribute it
## under certain conditions; see COPYING for details.


#set -e

Cmdline ()
{
	# Reading kernel command line
	for _PARAMETER in ${LIVE_CONFIG_CMDLINE}
	do
		case "${_PARAMETER}" in
			live-config.noautologin|noautologin)
				LIVE_CONFIG_NOAUTOLOGIN="true"
				;;

			live-config.nox11autologin|nox11autologin)
				LIVE_CONFIG_NOX11AUTOLOGIN="true"
				;;

			live-config.username=*|username=*)
				LIVE_USERNAME="${_PARAMETER#*username=}"
				;;
		esac
	done
}

Init ()
{
	# Disables both console and graphical autologin.
	case "${LIVE_CONFIG_NOAUTOLOGIN}" in
		true)
			exit 0
			;;
	esac

	# Disables graphical autologin, no matter what mechanism
	case "${LIVE_CONFIG_NOX11AUTOLOGIN}" in
		true)
			exit 0
			;;
	esac

	# Checking if package is installed or already configured
	if ! pkg_is_installed "lightdm" || \
	   component_was_executed "lightdm"
	then
		exit 0
	fi

	echo -n " lightdm"
}

Config ()
{
	# Upstream lightdm.conf uses "# key = value" (spaces around =). A global
	# sed on the main file uncommented the same keys under both [LightDM]
	# and [Seat:*]; autologin belongs only under [Seat:*]. Prefer conf.d.
	#
	# Pick an explicit session: without autologin-session, multiple
	# xsessions (xfce, lightdm-xsession, wayland) can leave autologin
	# falling back to the greeter.
	_SESSION=""
	for _s in xfce lightdm-xsession lxde mate cinnamon openbox
	do
		if [ -e "/usr/share/xsessions/${_s}.desktop" ]
		then
			_SESSION="${_s}"
			break
		fi
	done

	mkdir -p /etc/lightdm/lightdm.conf.d
	if [ -n "${_SESSION}" ]
	then
		cat > /etc/lightdm/lightdm.conf.d/zz-live-config-autologin.conf << EOF
[Seat:*]
autologin-user=${LIVE_USERNAME}
autologin-user-timeout=0
user-session=${_SESSION}
autologin-session=${_SESSION}
EOF
	else
		cat > /etc/lightdm/lightdm.conf.d/zz-live-config-autologin.conf << EOF
[Seat:*]
autologin-user=${LIVE_USERNAME}
autologin-user-timeout=0
EOF
	fi

	# Avoid xinit
	touch /var/lib/live/config/xinit

	# Avoid console agetty autologin (0190-s6 / 0190-runit / 0190-66)
	touch /var/lib/live/config/s6
	touch /var/lib/live/config/runit
	touch /var/lib/live/config/66

	# Creating state file
	touch /var/lib/live/config/lightdm
}

Cmdline
Init
Config
