#!/bin/sh

## live-config(7) - System Configuration Components
## 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.noroot|noroot)
				LIVE_CONFIG_NOROOT="true"
				;;

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

Init ()
{
	# Disable root access, no matter what mechanism
	case "${LIVE_CONFIG_NOROOT}" in
		true)
			exit 0
			;;
	esac

	# Checking if package is installed
	if [ ! -e /var/lib/dpkg/info/policykit-1.list ] || \
	   [ -e /var/lib/live/config/policykit ]
	then
		exit 0
	fi

	echo -n " policykit"
}

Config ()
{
	# Grant administrative PolicyKit pivilieges to default user

	# Configure PolicyKit in live session
	mkdir -p /etc/PolicyKit

cat > /etc/PolicyKit/PolicyKit.conf << EOF
<?xml version="1.0" encoding="UTF-8"?> <!-- -*- XML -*- -->

<!DOCTYPE pkconfig PUBLIC "-//freedesktop//DTD PolicyKit Configuration 1.0//EN"
"http://hal.freedesktop.org/releases/PolicyKit/1.0/config.dtd">

<!-- See the manual page PolicyKit.conf(5) for file format -->

<config version="0.1">
	<match user="root">
		<return result="yes"/>
	</match>
EOF

	if [ -n "${LIVE_USERNAME}" ]
	then

cat >> /etc/PolicyKit/PolicyKit.conf << EOF
	<!-- don't ask password for user in live session -->
	<match user="${LIVE_USERNAME}">
		<return result="yes"/>
	</match>
EOF

	fi

cat >> /etc/PolicyKit/PolicyKit.conf << EOF
	<define_admin_auth group="adm"/>
</config>
EOF

	mkdir -p /var/lib/polkit-1/localauthority/10-vendor.d

cat > /var/lib/polkit-1/localauthority/10-vendor.d/10-live-cd.pkla << EOF
# Policy to allow the livecd user to bypass policykit
[Live CD user permissions]
Identity=unix-user:${LIVE_USERNAME}
Action=*
ResultAny=no
ResultInactive=no
ResultActive=yes
EOF

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

Cmdline
Init
Config