#!/bin/sh

# container-tools - Manage systemd-nspawn containers
# Copyright (C) 2014-2017 Daniel Baumann <daniel.baumann@open-infrastructure.net>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

set -e

DEBCONF_NOWARNINGS="true"
export DEBCONF_NOWARNINGS

. /usr/share/debconf/confmodule

Distribution ()
{
	db_get cnt-debconf/distribution
	DISTRIBUTION="${RET}" # select

	if [ -z "${DISTRIBUTION}" ]
	then
		case "${MODE}" in
			debian)
				db_subst cnt-debconf/distribution CHOICES "Debian GNU/Linux 9 \"stretch\", Debian GNU/Linux unstable/sid"
				db_subst cnt-debconf/distribution CHOICES_C "stretch, sid"

				db_set cnt-debconf/distribution stretch
				db_fset cnt-debconf/distribution seen false
				;;

			progress-linux)
				db_subst cnt-debconf/distribution CHOICES "Progress Linux 4 (dschinn), Progress Linux 4+ (dschinn-backports)"
				db_subst cnt-debconf/distribution CHOICES_C "dschinn, dschinn-backports"

				db_set cnt-debconf/distribution dschinn-backports
				db_fset cnt-debconf/distribution seen false
				;;
		esac

		db_settitle cnt-debconf/title
		db_input high cnt-debconf/distribution || true
		db_go

		db_get cnt-debconf/distribution
		DISTRIBUTION="${RET}" # select
	fi

	echo "DISTRIBUTION=\"${DISTRIBUTION}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
	export DISTRIBUTION
}

Parent_distribution ()
{
	db_get cnt-debconf/parent-distribution
	PARENT_DISTRIBUTION="${RET}"

	if [ -z "${PARENT_DISTRIBUTION}" ]
	then
		case "${MODE}" in
			progress-linux)
				case "${DISTRIBUTION}" in
					dschinn*)
						PARENT_DISTRIBUTION="stretch"
						;;
				esac
				;;

			*)
				PARENT_DISTRIBUTION="${DISTRIBUTION}"
				;;
		esac
	fi

	echo "PARENT_DISTRIBUTION=\"${PARENT_DISTRIBUTION}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
	export PARENT_DISTRIBUTION
}

Architecture ()
{
	case "$(dpkg --print-architecture)" in
		amd64)
			DEFAULT="amd64"
			CHOICES="Automatic, 32-bit PC (i386), 64-bit PC (amd64)"
			CHOICES_C="auto, i386, amd64"
			;;

		arm64)
			DEFAULT="arm64"
			CHOICES="Automatic, Rpi1 (armel), Rpi2 (armhf), Rpi3 (arm64)"
			CHOICES_C="auto, armel, armhf, arm64"
			;;

		armel)
			DEFAULT="armel"
			CHOICES="Automatic, Rpi1 (armel)"
			CHOICES_C="auto, armel"
			;;

		armhf)
			DEFAULT="armhf"
			CHOICES="Automatic, Rpi1 (armel), Rpi2 (armhf)"
			CHOICES_C="auto, armel, armhf"
			;;

		i386)
			case "$(uname -m)" in
				x86_64)
					DEFAULT="amd64"
					CHOICES="Automatic, 32-bit PC (i386), 64-bit PC (amd64)"
					CHOICES_C="auto, i386, amd64"
					;;

				*)
					DEFAULT="i386"
					CHOICES=""
					CHOICES_C=""
					;;
			esac
			;;

		*)
			echo "E: Architecture current not yet supported."
			exit 1
	esac

	db_get cnt-debconf/architecture
	ARCHITECTURE="${RET}" # select

	if [ -z "${ARCHITECTURE}" ] && [ -n "${CHOICES}" ]
	then
		db_subst cnt-debconf/architecture CHOICES ${CHOICES}
		db_subst cnt-debconf/architecture CHOICES_C ${CHOICES_C}

		db_set cnt-debconf/architecture ${DEFAULT}
		db_fset cnt-debconf/distribution seen false

		db_settitle cnt-debconf/title
		db_input high cnt-debconf/architecture || true
		db_go

		db_get cnt-debconf/architecture
		ARCHITECTURE="${RET}" # select
	fi

	case "${ARCHITECTURE}" in
		auto)
			ARCHITECTURE="${DEFAULT}"
			;;
	esac

	echo "ARCHITECTURE=\"${ARCHITECTURE}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
	export ARCHITECTURE
}

Archives ()
{
	db_get cnt-debconf/archives
	ARCHIVES="${RET}" # multiselect

	if [ -z "${ARCHIVES}" ]
	then
		case "${MODE}" in
			debian)
				case "${PARENT_DISTRIBUTION}" in
					sid)
						db_subst cnt-debconf/archives CHOICES "Experimental"
						db_subst cnt-debconf/archives CHOICES_C "experimental"

						db_set cnt-debconf/archives ""
						db_fset cnt-debconf/archives seen false
						;;

					*)
						db_subst cnt-debconf/archives CHOICES "Security, Updates, Backports, Proposed Updates"
						db_subst cnt-debconf/archives CHOICES_C "${DISTRIBUTION}-security, ${DISTRIBUTION}-updates, ${DISTRIBUTION}-backports, ${DISTRIBUTION}-proposed-updates"

						case "${PARENT_DISTRIBUTION}" in
							sid)
								db_set cnt-debconf/archives ""
								;;

							*)
								#db_set cnt-debconf/archives "${DISTRIBUTION}-security, ${DISTRIBUTION}-updates, ${DISTRIBUTION}-backports"
								db_set cnt-debconf/archives "${DISTRIBUTION}-security, ${DISTRIBUTION}-updates"
								;;
						esac

						db_fset cnt-debconf/archives seen false
						;;
				esac
				;;

			progress-linux)
				DIST="$(echo ${DISTRIBUTION} | sed -e 's|-backports||')"

				db_subst cnt-debconf/archives CHOICES "staging, Security, Security (staging), Updates, Updates (staging), Extras, Extras (staging), Backports, Backports (staging), Backports Extras, Backports Extras (staging)"
				db_subst cnt-debconf/archives CHOICES_C "${DIST}-staging, ${DIST}-security, ${DIST}-security-staging, ${DIST}-updates, ${DIST}-updates-staging, ${DIST}-extras, ${DIST}-extras-staging, ${DIST}-backports, ${DIST}-backports-staging, ${DIST}-backports-extras, ${DIST}-backports-extras-staging"

				db_set cnt-debconf/archives "${DIST}-security, ${DIST}-updates, ${DIST}-extras, ${DIST}-backports, ${DIST}-backports-extras"
				db_fset cnt-debconf/archives seen false
				;;
		esac

		db_settitle cnt-debconf/title
		db_input high cnt-debconf/archives || true
		db_go

		db_get cnt-debconf/archives
		ARCHIVES="${RET}" # multiselect
	fi

	ARCHIVES="$(echo ${ARCHIVES} | sed -e 's|, | |g')"

	echo "ARCHIVES=\"${ARCHIVES}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
	export ARCHIVES
}

Parent_archives ()
{
	db_get cnt-debconf/parent-archives
	PARENT_ARCHIVES="${RET}" # multiselect (w/o empty)

	if [ -z "${PARENT_ARCHIVES}" ]
	then
		case "${MODE}" in
			progress-linux)
				db_subst cnt-debconf/parent-archives CHOICES "Security, Updates, Backports, Proposed Updates"
				db_subst cnt-debconf/parent-archives CHOICES_C "${PARENT_DISTRIBUTION}-security, ${PARENT_DISTRIBUTION}-updates, ${PARENT_DISTRIBUTION}-backports, ${PARENT_DISTRIBUTION}-proposed-updates"

				case "${PARENT_DISTRIBUTION}" in
					*)
						#db_set cnt-debconf/parent-archives "${PARENT_DISTRIBUTION}-security, ${PARENT_DISTRIBUTION}-updates, ${PARENT_DISTRIBUTION}-backports"
						db_set cnt-debconf/parent-archives "${PARENT_DISTRIBUTION}-security, ${PARENT_DISTRIBUTION}-updates"
						;;
				esac

				db_fset cnt-debconf/parent-archives seen false

				db_settitle cnt-debconf/title
				db_input high cnt-debconf/parent-archives || true
				db_go
				;;

			*)
				db_subst cnt-debconf/parent-archives CHOICES "Security, Updates, Backports, Proposed Updates"
				db_subst cnt-debconf/parent-archives CHOICES_C "${ARCHIVES}"

				db_set cnt-debconf/parent-archives "${ARCHIVES}"
				db_fset cnt-debconf/parent-archives seen true
				;;
		esac

		db_get cnt-debconf/parent-archives
		PARENT_ARCHIVES="${RET}" # multiselect (w/o empty)

		if [ -z "${PARENT_ARCHIVES}" ]
		then
			case "${MODE}" in
				progress-linux)
					case "${PARENT_DISTRIBUTION}" in
						*)
							#PARENT_ARCHIVES="${PARENT_DISTRIBUTION}-security, ${PARENT_DISTRIBUTION}-updates, ${PARENT_DISTRIBUTION}-backports"
							PARENT_ARCHIVES="${PARENT_DISTRIBUTION}-security, ${PARENT_DISTRIBUTION}-updates"
							;;
					esac
					;;

				*)
					PARENT_ARCHIVES="${ARCHIVES}"
					;;
			esac
		fi
	fi

	PARENT_ARCHIVES="$(echo ${PARENT_ARCHIVES} | sed -e 's|, | |g')"

	echo "PARENT_ARCHIVES=\"${PARENT_ARCHIVES}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
	export PARENT_ARCHIVES
}

Mirror ()
{
	db_get cnt-debconf/mirror
	MIRROR="${RET}"

	if [ -z "${MIRROR}" ]
	then
		case "${MODE}" in
			debian)
				db_set cnt-debconf/mirror https://deb.debian.org/debian
				db_fset cnt-debconf/mirror seen false
				;;

			progress-linux)
				db_set cnt-debconf/mirror https://cdn.archive.progress-linux.org/packages
				db_fset cnt-debconf/mirror seen false
				;;
		esac

		db_settitle cnt-debconf/title
		db_input high cnt-debconf/mirror || true
		db_go

		db_get cnt-debconf/mirror
		MIRROR="${RET}" # string (w/o empty)

		if [ -z "${MIRROR}" ]
		then
			case "${MODE}" in
				debian)
					MIRROR="https://deb.debian.org/debian"
					;;

				progress-linux)
					MIRROR="https://cdn.archive.progress-linux.org/packages"
					;;
			esac
		fi
	fi

	echo "MIRROR=\"${MIRROR}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
	export MIRROR
}

Mirror_security ()
{
	if ! echo "${ARCHIVES}" | grep -qs "-security"
	then
		return 0
	fi

	db_get cnt-debconf/mirror-security
	MIRROR_SECURITY="${RET}" # string (w/o empty)

	if [ -z "${MIRROR_SECURITY}" ]
	then
		case "${MODE}" in
			debian)
				db_set cnt-debconf/mirror-security http://security.debian.org
				db_fset cnt-debconf/mirror-security seen false
				;;

			*)
				db_set cnt-debconf/mirror-security ${MIRROR}
				db_fset cnt-debconf/mirror-security seen true
				;;
		esac

		db_settitle cnt-debconf/title
		db_input high cnt-debconf/mirror-security || true
		db_go

		db_get cnt-debconf/mirror-security
		MIRROR_SECURITY="${RET}" # string (w/o empty)

		if [ -z "${MIRROR_SECURITY}" ]
		then
			case "${MODE}" in
				debian)
					MIRROR_SECURITY="http://security.debian.org"
					;;

				*)
					MIRROR_SECURITY="${MIRROR}"
					;;
			esac
		fi
	fi

	echo "MIRROR_SECURITY=\"${MIRROR_SECURITY}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
	export MIRROR_SECURITY
}

Parent_mirror ()
{
	db_get cnt-debconf/parent-mirror
	PARENT_MIRROR="${RET}" # string (w/o empty)

	if [ -z "${PARENT_MIRROR}" ]
	then
		case "${MODE}" in
			progress-linux)
				db_set cnt-debconf/parent-mirror https://deb.debian.org/debian
				db_fset cnt-debconf/parent-mirror seen false

				db_settitle cnt-debconf/title
				db_input high cnt-debconf/parent-mirror || true
				db_go
				;;

			*)
				db_set cnt-debconf/parent-mirror ${MIRROR}
				db_fset cnt-debconf/parent-mirror seen true
				;;
		esac

		db_get cnt-debconf/parent-mirror
		PARENT_MIRROR="${RET}" # string (w/o empty)

		if [ -z "${PARENT_MIRROR}" ]
		then
			case "${MODE}" in
				progress-linux)
					PARENT_MIRROR="https://deb.debian.org/debian"
					;;

				*)
					PARENT_MIRROR="${MIRROR}"
					;;
			esac
		fi
	fi

	echo "PARENT_MIRROR=\"${PARENT_MIRROR}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
	export PARENT_MIRROR
}

Parent_mirror_security ()
{
	if ! echo "${PARENT_ARCHIVES}" | grep -qs "-security"
	then
		return 0
	fi

	db_get cnt-debconf/parent-mirror-security
	PARENT_MIRROR_SECURITY="${RET}" # string (w/o empty)

	if [ -z "${PARENT_MIRROR_SECURITY}" ]
	then
		case "${MODE}" in
			progress-linux)
				db_set cnt-debconf/parent-mirror-security http://security.debian.org
				db_fset cnt-debconf/parent-mirror-security seen false

				db_settitle cnt-debconf/title
				db_input high cnt-debconf/parent-mirror-security || true
				db_go
				;;

			*)
				db_set cnt-debconf/parent-mirror-security ${MIRROR_SECURITY}
				db_fset cnt-debconf/parent-mirror-security seen true
				;;
		esac

		db_get cnt-debconf/parent-mirror-security
		PARENT_MIRROR_SECURITY="${RET}" # string (w/o empty)

		if [ -z "${PARENT_MIRROR_SECURITY}" ]
		then
			case "${MODE}" in
				progress-linux)
					PARENT_MIRROR_SECURITY="http://security.debian.org"
					;;

				*)
					PARENT_MIRROR_SECURITY="${MIRROR_SECURITY}"
					;;
			esac
		fi
	fi

	echo "PARENT_MIRROR_SECURITY=\"${PARENT_MIRROR_SECURITY}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
	export PARENT_MIRROR_SECURITY
}

Archive_areas ()
{
	db_get cnt-debconf/archive-areas
	ARCHIVE_AREAS="${RET}"

	if [ -z "${ARCHIVE_AREAS}" ]
	then
		case "${MODE}" in
			progress-linux)
				db_subst cnt-debconf/archive-areas CHOICES "main, contrib, non-free"

				db_set cnt-debconf/archive-areas "main, contrib, non-free"
				db_fset cnt-debconf/archive-areas seen false
				;;

			*)
				db_subst cnt-debconf/archive-areas CHOICES "main, contrib, non-free"

				db_set cnt-debconf/archive-areas "main"
				db_fset cnt-debconf/archive-areas seen false
				;;
		esac

		db_settitle cnt-debconf/title
		db_input high cnt-debconf/archive-areas || true
		db_go

		db_get cnt-debconf/archive-areas
		ARCHIVE_AREAS="${RET}" # multiselect (w/o empty)

		if [ -z "${ARCHIVE_AREAS}" ]
		then
			case "${MODE}" in
				debian)
					ARCHIVE_AREAS="main"
					;;

				progress-linux)
					ARCHIVE_AREAS="main, contrib, non-free"
					;;
			esac
		fi
	fi

	ARCHIVE_AREAS="$(echo ${ARCHIVE_AREAS} | sed -e 's| ||g')"

	echo "ARCHIVE_AREAS=\"${ARCHIVE_AREAS}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
	export ARCHIVE_AREAS
}

Parent_archive_areas ()
{
	db_get cnt-debconf/parent-archive-areas
	PARENT_ARCHIVE_AREAS="${RET}" # multiselect (w/o empty)

	if [ -z "${PARENT_ARCHIVE_AREAS}" ]
	then
		case "${MODE}" in
			progress-linux)
				db_subst cnt-debconf/parent-archive-areas CHOICES "main, contrib, non-free"

				db_set cnt-debconf/parent-archive-areas "main, contrib, non-free"
				db_fset cnt-debconf/parent-archive-areas seen false

				db_settitle cnt-debconf/title
				db_input high cnt-debconf/parent-archive-areas || true
				db_go
				;;

			*)
				db_subst cnt-debconf/parent-archive-areas CHOICES "${ARCHIVE_AREAS}"

				db_set cnt-debconf/parent-archive-areas "${ARCHIVE_AREAS}"
				db_fset cnt-debconf/parent-archive-areas seen true
				;;
		esac

		db_get cnt-debconf/parent-archive-areas
		PARENT_ARCHIVE_AREAS="${RET}" # multiselect (w/o empty)

		if [ -z "${PARENT_ARCHIVE_AREAS}" ]
		then
			case "${MODE}" in
				progress-linux)
					PARENT_ARCHIVE_AREAS="main, contrib, non-free"
					;;

				*)
					PARENT_ARCHIVE_AREAS="${ARCHIVE_AREAS}"
					;;
			esac
		fi
	fi

	PARENT_ARCHIVE_AREAS="$(echo ${PARENT_ARCHIVE_AREAS} | sed -e 's| ||g')"

	echo "PARENT_ARCHIVE_AREAS=\"${PARENT_ARCHIVE_AREAS}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
	export PARENT_ARCHIVE_AREAS
}

Packages ()
{
	db_get cnt-debconf/packages
	PACKAGES="${RET}" # string (w/ empty)

	if [ -z "${PACKAGES}" ]
	then
		db_settitle cnt-debconf/title
		db_input high cnt-debconf/packages || true
		db_go

		db_get cnt-debconf/packages
		PACKAGES="${RET}" # string (w/ empty)
	fi

	echo "PACKAGES=\"${PACKAGES}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
	export PACKAGES
}

Local_archives ()
{
	NUMBER="0"

	while db_get cnt-debconf/archive${NUMBER}/repository && [ "${RET}" ]
	do
		mkdir -p "${DEBCONF_TMPDIR}/apt"

		REPOSITORY="${RET#deb }"

		LIST="archive${NUMBER}.list"
		if db_get cnt-debconf/archive${NUMBER}/list
		then
			LIST="$(basename ${RET} .list).list"
		fi

		COMMENT=""
		if db_get cnt-debconf/archive${NUMBER}/comment
		then
			COMMENT="${RET}"

			echo "# ${COMMENT}" > "${DEBCONF_TMPDIR}/apt/${LIST}"
		fi

		echo "deb ${REPOSITORY}" >> "${DEBCONF_TMPDIR}/apt/${LIST}"

		if db_get cnt-debconf/archive${NUMBER}/source && [ "$RET" = true ]
		then
			echo "deb-src ${REPOSITORY}" >> "${DEBCONF_TMPDIR}/apt/${LIST}"
		fi

		KEY=""
		if db_get cnt-debconf/archive${NUMBER}/key
		then
			KEY="${RET}"

			wget -q "${KEY}" -O "${DEBCONF_TMPDIR}/apt/$(basename ${LIST} .list).key"
		fi

		PREFERENCES_PACKAGE=""
		PREFERENCES_PIN=""
		PREFERENCES_PIN_PRIORITY=""
		if db_get cnt-debconf/archive${NUMBER}/preferences-package
		then
			PREFERENCES_PACKAGE="${RET}"

			if db_get cnt-debconf/archive${NUMBER}/preferences-pin
			then
				PREFERENCES_PIN="${RET}"
			fi

			if db_get cnt-debconf/archive${NUMBER}/preferences-pin-priority
			then
				PREFERENCES_PIN_PRIORITY="${RET}"
			fi

			if [ -n "${PREFERENCES_PACKAGE}" ] || [ -n "${PREFERENCES_PIN}" ] || [ -n "${PREFERENCES_PIN_PRIORITY}" ]
			then

cat > "${DEBCONF_TMPDIR}/apt/$(basename ${LIST} .list).pref" << EOF
Package: ${PREFERENCES_PACKAGE}
Pin: ${PREFERENCES_PIN}
Pin-Priority: ${PREFERENCES_PIN_PRIORITY}
EOF

			fi
		fi

		NUMBER="$((${NUMBER} + 1))"
	done
}

Network_defaults ()
{
	# FIXME:
	#   * use interfaces.d where possible
	#   * respect pre-existing interfaces (or interfaces.d)
	#   * add support for bridges (make interface configuration more generic?)

	HOSTNAME_SHORT="$(echo veth-$(echo ${NAME} | cut -c-8)-0)"
	VETH_NAME="$(echo ${HOSTNAME_SHORT:-veth0})"

	NETWORK0_VETH="${NETWORK0_VETH:-$VETH_NAME}"
	NETWORK0_BRIDGE="${NETWORK0_BRIDGE:-br0}"
	NETWORK0_IPV4_METHOD="${NETWORK0_IPV4_METHOD:-dhcp}"
	NETWORK0_IPV4_ADDRESS="${NETWORK0_IPV4_ADDRESS:-192.168.1.2}"
	NETWORK0_IPV4_NETMASK="${NETWORK0_IPV4_NETMASK:-255.255.255.0}"

	if [ "${NETWORK0_IPV4_METHOD}" = "static" ] && [ -e /etc/resolv.conf ]
	then
		NAMESERVER_SERVER="${NAMESERVER_SERVER:-$(if [ -e /etc/resolv.conf ]; then awk '/^nameserver / {$1=""; print $0}' /etc/resolv.conf; fi)}"
		# Workaround to get rid of newlines since debconf can not handle multiline return value in assignments
		NAMESERVER_SERVER="$(echo ${NAMESERVER_SERVER})"

		NAMESERVER_DOMAIN="${NAMESERVER_DOMAIN:-$(if [ -e /etc/resolv.conf ]; then awk '/^domain / {$1=""; print $0}' /etc/resolv.conf; fi)}"
		NAMESERVER_SEARCH="${NAMESERVER_SEARCH:-$(if [ -e /etc/resolv.conf ]; then awk '/^search / {$1=""; print $0}' /etc/resolv.conf; fi)}"
		NAMESERVER_OPTIONS="${NAMESERVER_OPTIONS:-$(if [ -e /etc/resolv.conf ]; then awk '/^options / {$1=""; print $0}' /etc/resolv.conf; fi)}"
	fi
}

Network ()
{
	db_get cnt-debconf/network0/bridge
	NETWORK0_BRIDGE="${RET}" # string (w/o empty)

	db_get cnt-debconf/network0/veth
	NETWORK0_VETH="${RET}" # string (w/o empty)

	db_get cnt-debconf/network0/ipv4-method
	NETWORK0_IPV4_METHOD="${RET}" # select

	db_get cnt-debconf/network0/ipv4-comment
	NETWORK0_IPV4_COMMENT="${RET}" # string (w/ empty)

	db_get cnt-debconf/network0/ipv4-address
	NETWORK0_IPV4_ADDRESS="${RET}" # string (w/o empty)

	db_get cnt-debconf/network0/ipv4-gateway
	NETWORK0_IPV4_GATEWAY="${RET}" # string (w/ empty)

	db_get cnt-debconf/network0/ipv4-netmask
	NETWORK0_IPV4_NETMASK="${RET}" # string (w/o empty)

	db_get cnt-debconf/network0/ipv4-post-up
	NETWORK0_IPV4_POST_UP="${RET}" # string (w/ empty)

	db_get cnt-debconf/network0/ipv4-post-down
	NETWORK0_IPV4_POST_DOWN="${RET}" # string (w/ empty)

	db_get cnt-debconf/nameserver/server
	NAMESERVER_SERVER="${RET}" # string (w/ empty)

	db_get cnt-debconf/nameserver/domain
	NAMESERVER_DOMAIN="${RET}" # string (w/ empty)

	db_get cnt-debconf/nameserver/search
	NAMESERVER_SEARCH="${RET}" # string (w/ empty)

	db_get cnt-debconf/nameserver/options
	NAMESERVER_OPTIONS="${RET}" # string (w/ empty)

	Network_defaults

	db_set cnt-debconf/network0/bridge "${NETWORK0_BRIDGE}"
	db_fset cnt-debconf/network0/bridge seen false

	db_set cnt-debconf/network0/veth "${NETWORK0_VETH}"
	db_fset cnt-debconf/network0/veth seen false

	db_set cnt-debconf/network0/ipv4-method "${NETWORK0_IPV4_METHOD}"
	db_fset cnt-debconf/network0/ipv4-method seen false

	db_set cnt-debconf/network0/ipv4-comment "${NETWORK0_IPV4_COMMENT}"
	db_fset cnt-debconf/network0/ipv4-comment seen false

	db_set cnt-debconf/network0/ipv4-address "${NETWORK0_IPV4_ADDRESS}"
	db_fset cnt-debconf/network0/ipv4-address seen false

	db_set cnt-debconf/network0/ipv4-gateway "${NETWORK0_IPV4_GATEWAY}"
	db_fset cnt-debconf/network0/ipv4-gateway seen false

	db_set cnt-debconf/network0/ipv4-netmask "${NETWORK0_IPV4_NETMASK}"
	db_fset cnt-debconf/network0/ipv4-netmask seen false

	db_set cnt-debconf/network0/ipv4-post-up "${NETWORK0_IPV4_POST_UP}"
	db_fset cnt-debconf/network0/ipv4-post-up seen false

	db_set cnt-debconf/network0/ipv4-post-down "${NETWORK0_IPV4_POST_DOWN}"
	db_fset cnt-debconf/network0/ipv4-post-down seen false

	db_set cnt-debconf/nameserver/server "${NAMESERVER_SERVER}"
	db_fset cnt-debconf/nameserver/server seen false

	db_set cnt-debconf/nameserver/domain "${NAMESERVER_DOMAIN}"
	db_fset cnt-debconf/nameserver/domain seen false

	db_set cnt-debconf/nameserver/search "${NAMESERVER_SEARCH}"
	db_fset cnt-debconf/nameserver/search seen false

	db_set cnt-debconf/nameserver/options "${NAMESERVER_OPTIONS}"
	db_fset cnt-debconf/nameserver/options seen false

	db_settitle cnt-debconf/title
	db_input high cnt-debconf/network0/ipv4-method || true
	db_go

	db_get cnt-debconf/network0/bridge
	NETWORK0_BRIDGE="${RET}" # select

	db_get cnt-debconf/network0/veth
	NETWORK0_VETH="${RET}" # select

	db_get cnt-debconf/network0/ipv4-method
	NETWORK0_IPV4_METHOD="${RET}" # select

	case "${NETWORK0_IPV4_METHOD}" in
		none|dhcp)
			;;

		static)
			db_settitle cnt-debconf/title
			db_input high cnt-debconf/network0/ipv4-comment || true
			db_go

			db_settitle cnt-debconf/title
			db_input high cnt-debconf/network0/ipv4-address || true
			db_go

			db_settitle cnt-debconf/title
			db_input high cnt-debconf/network0/ipv4-gateway || true
			db_go

			db_settitle cnt-debconf/title
			db_input high cnt-debconf/network0/ipv4-netmask || true
			db_go

			db_settitle cnt-debconf/title
			db_input high cnt-debconf/network0/ipv4-post-up || true
			db_go

			db_settitle cnt-debconf/title
			db_input high cnt-debconf/network0/ipv4-post-down || true
			db_go

			db_settitle cnt-debconf/title
			db_input high cnt-debconf/nameserver/server || true
			db_go
			;;
	esac

	NUMBER="0"

	while db_get cnt-debconf/network${NUMBER}/ipv4-method && [ "${RET}" ]
	do
		if db_get cnt-debconf/network${NUMBER}/bridge
		then
			eval NETWORK${NUMBER}_BRIDGE="\"${RET}\"" # string (w/o empty)
		fi

		if db_get cnt-debconf/network${NUMBER}/veth
		then
			eval NETWORK${NUMBER}_VETH="\"${RET}\"" # string (w/o empty)
		fi

		if db_get cnt-debconf/network${NUMBER}/ipv4-comment
		then
			eval NETWORK${NUMBER}_IPV4_COMMENT="\"${RET}\"" # string (w/ empty)
		fi

		if db_get cnt-debconf/network${NUMBER}/ipv4-method
		then
			eval NETWORK${NUMBER}_IPV4_METHOD="\"${RET}\"" # select
		fi

		if db_get cnt-debconf/network${NUMBER}/ipv4-address
		then
			eval NETWORK${NUMBER}_IPV4_ADDRESS="\"${RET}\"" # string (w/o empty)
		fi

		if db_get cnt-debconf/network${NUMBER}/ipv4-gateway
		then
			eval NETWORK${NUMBER}_IPV4_GATEWAY="\"${RET}\"" # string (w/ empty)
		fi

		if db_get cnt-debconf/network${NUMBER}/ipv4-netmask
		then
			eval NETWORK${NUMBER}_IPV4_NETMASK="\"${RET}\"" # string (w/o empty)
		fi

		if db_get cnt-debconf/network${NUMBER}/ipv4-post-up
		then
			eval NETWORK${NUMBER}_IPV4_POST_UP="\"${RET}\"" # string (w/ empty)
		fi

		if db_get cnt-debconf/network${NUMBER}/ipv4-post-down
		then
			eval NETWORK${NUMBER}_IPV4_POST_DOWN="\"${RET}\"" # string (w/ empty)
		fi

		NUMBER="$((${NUMBER} + 1))"
	done

	NETWORK_NUMBER="${NUMBER}"

	db_get cnt-debconf/nameserver/server
	NAMESERVER_SERVER="${RET}" # string (w/ empty)

	db_get cnt-debconf/nameserver/domain
	NAMESERVER_DOMAIN="${RET}" # string (w/ empty)

	db_get cnt-debconf/nameserver/search
	NAMESERVER_SEARCH="${RET}" # string (w/ empty)

	db_get cnt-debconf/nameserver/options
	NAMESERVER_OPTIONS="${RET}" # string (w/ empty)

	Network_defaults

	echo "NETWORK_NUMBER=\"${NETWORK_NUMBER}\"" >> "${DEBCONF_TMPDIR}/debconf.default"

	for NUMBER in $(seq 0 ${NETWORK_NUMBER})
	do
		eval BRIDGE="$`echo NETWORK${NUMBER}_BRIDGE`"
		echo "NETWORK${NUMBER}_BRIDGE=\"${BRIDGE}\"" >> "${DEBCONF_TMPDIR}/debconf.default"

		eval VETH="$`echo NETWORK${NUMBER}_VETH`"
		echo "NETWORK${NUMBER}_VETH=\"${VETH}\"" >> "${DEBCONF_TMPDIR}/debconf.default"

		eval COMMENT="$`echo NETWORK${NUMBER}_IPV4_COMMENT`"
		echo "NETWORK${NUMBER}_IPV4_COMMENT=\"${COMMENT}\"" >> "${DEBCONF_TMPDIR}/debconf.default"

		eval METHOD="$`echo NETWORK${NUMBER}_IPV4_METHOD`"
		echo "NETWORK${NUMBER}_IPV4_METHOD=\"${METHOD}\"" >> "${DEBCONF_TMPDIR}/debconf.default"

		eval ADDRESS="$`echo NETWORK${NUMBER}_IPV4_ADDRESS`"
		echo "NETWORK${NUMBER}_IPV4_ADDRESS=\"${ADDRESS}\"" >> "${DEBCONF_TMPDIR}/debconf.default"

		eval GATEWAY="$`echo NETWORK${NUMBER}_IPV4_GATEWAY`"
		echo "NETWORK${NUMBER}_IPV4_GATEWAY=\"${GATEWAY}\"" >> "${DEBCONF_TMPDIR}/debconf.default"

		eval NETMASK="$`echo NETWORK${NUMBER}_IPV4_NETMASK`"
		echo "NETWORK${NUMBER}_IPV4_NETMASK=\"${NETMASK}\"" >> "${DEBCONF_TMPDIR}/debconf.default"

		eval POST_UP="$`echo NETWORK${NUMBER}_IPV4_POST_UP`"
		echo "NETWORK${NUMBER}_IPV4_POST_UP=\"${POST_UP}\"" >> "${DEBCONF_TMPDIR}/debconf.default"

		eval POST_DOWN="$`echo NETWORK${NUMBER}_IPV4_POST_DOWN`"
		echo "NETWORK${NUMBER}_IPV4_POST_DOWN=\"${POST_DOWN}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
	done

	echo "NAMESERVER_SERVER=\"${NAMESERVER_SERVER}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
	echo "NAMESERVER_DOMAIN=\"${NAMESERVER_DOMAIN}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
	echo "NAMESERVER_SEARCH=\"${NAMESERVER_SEARCH}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
	echo "NAMESERVER_OPTIONS=\"${NAMESERVER_OPTIONS}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
}

Root_password ()
{
	if db_get cnt-debconf/root-password
	then
		ROOT_PASSWORD="${RET}" # string (w/o empty)
	fi

	if [ -z "${ROOT_PASSWORD}" ]
	then
		# Create a random password as suggestion for the user
		RANDOM_PASSWORD="$(dd if=/dev/urandom bs=12 count=1 2> /dev/null | base64)"

		db_set cnt-debconf/root-password ${RANDOM_PASSWORD}
		db_fset cnt-debconf/root-password seen false

		db_settitle cnt-debconf/title
		db_input high cnt-debconf/root-password || true
		db_go

		db_get cnt-debconf/root-password
		ROOT_PASSWORD="${RET}"

		if [ -z "${ROOT_PASSWORD}" ]
		then
			# User did set not set a password, falling back to random password
			ROOT_PASSWORD="${RANDOM_PASSWORD}"
		fi

		if [ "${ROOT_PASSWORD}" = "${RANDOM_PASSWORD}" ]
		then
			echo "ROOT_RANDOM_PASSWORD=\"true\"" >> "${DEBCONF_TMPDIR}/debconf.default"
		fi
	fi

	echo "ROOT_PASSWORD=\"${ROOT_PASSWORD}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
}

Internal_options ()
{
	if db_get cnt-debconf/apt-recommends
	then
		APT_RECOMMENDS="${RET}" # boolean (w/ empty)
	fi

	echo "APT_RECOMMENDS=\"${APT_RECOMMENDS}\"" >> "${DEBCONF_TMPDIR}/debconf.default"

	if db_get cnt-debconf/debconf-frontend
	then
		DEBCONF_FRONTEND="${RET}" # select
	fi

	DEBCONF_FRONTEND="${DEBCONF_FRONTEND:-dialog}"
	echo "DEBCONF_FRONTEND=\"${DEBCONF_FRONTEND}\"" >> "${DEBCONF_TMPDIR}/debconf.default"

	if db_get cnt-debconf/debconf-priority
	then
		DEBCONF_PRIORITY="${RET}" # select
	fi

	DEBCONF_PRIORITY="${DEBCONF_PRIORITY:-high}"
	echo "DEBCONF_PRIORITY=\"${DEBCONF_PRIORITY}\"" >> "${DEBCONF_TMPDIR}/debconf.default"

	if db_get cnt-debconf/container-command
	then
		CONTAINER_COMMAND="${RET}" # string (w/ empty)
	fi

	echo "CONTAINER_COMMAND=\"${CONTAINER_COMMAND}\"" >> "${DEBCONF_TMPDIR}/debconf.default"

	if db_get cnt-debconf/host-command
	then
		HOST_COMMAND="${RET}" # string (w/ empty)
	fi

	echo "HOST_COMMAND=\"${HOST_COMMAND}\"" >> "${DEBCONF_TMPDIR}/debconf.default"

	if db_get cnt-debconf/container-server
	then
		CNT_CONTAINER_SERVER="${RET:-FQDN}" # string (w/o empty)
	fi

	CNT_CONTAINER_SERVER="${CNT_CONTAINER_SERVER:-FQDN}"

	case "${CNT_CONTAINER_SERVER}" in
		FQDN)
			CNT_CONTAINER_SERVER="$(hostname -f)"
			;;
	esac

	echo "CNT_CONTAINER_SERVER=\"${CNT_CONTAINER_SERVER}\"" >> "${DEBCONF_TMPDIR}/debconf.default"

	if db_get cnt-debconf/bind
	then
		BIND="${RET}" # string (w/ empty)
	fi

	echo "BIND=\"${BIND}\"" >> "${DEBCONF_TMPDIR}/debconf.default"

	if db_get cnt-debconf/overlay
	then
		CNT_OVERLAY="${RET}" # string (w/ empty)
	fi

	echo "CNT_OVERLAY=\"${CNT_OVERLAY}\"" >> "${DEBCONF_TMPDIR}/debconf.default"
}

Distribution
Parent_distribution

Architecture

Archives
Parent_archives

Mirror
Mirror_security

Parent_mirror
Parent_mirror_security

Archive_areas
Parent_archive_areas

Packages
Local_archives

Network
Root_password

Internal_options

db_stop