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#!/bin/sh

# lh_chroot_sources(1) - manage /etc/apt/sources.list
# Copyright (C) 2006-2007 Daniel Baumann <daniel@debian.org>
#
# live-helper 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

# Including common functions
LH_BASE="${LH_BASE:-/usr/share/live-helper}"

for FUNCTION in "${LH_BASE}"/functions/*.sh
do
	. "${FUNCTION}"
done

# Setting static variables
DESCRIPTION="manage /etc/apt/sources.list"
HELP=""
USAGE="${PROGRAM} {install|remove} [--force]"

Arguments "${@}"

# Reading configuration files
Read_conffile config/common
Read_conffile config/bootstrap
Read_conffile config/chroot
Read_conffile config/binary
Read_conffile config/source
Set_defaults

# Requiring stage file
Require_stagefile .stage/bootstrap

case "${1}" in
	install)
		Echo_message "Configuring file /etc/apt/sources.list"

		# Checking stage file
		Check_stagefile .stage/chroot_sources

		# Checking lock file
		Check_lockfile .lock

		# Creating lock file
		Create_lockfile .lock

		# Configure custom sources.list
		echo "deb ${LIVE_MIRROR_BOOTSTRAP} ${LIVE_DISTRIBUTION} ${LIVE_SECTIONS}" > chroot/etc/apt/sources.list

		if [ "${LIVE_SOURCE}" = "enabled" ]
		then
			echo "deb-src ${LIVE_MIRROR_BOOTSTRAP} ${LIVE_DISTRIBUTION} ${LIVE_SECTIONS}" >> chroot/etc/apt/sources.list
		fi

		if [ "${LIVE_SECURITY}" = "enabled" ]
		then
			case "${LH_MODE}" in
				debian)
					if [ "${LIVE_DISTRIBUTION}" != "sid" ] && [ "${LIVE_DISTRIBUTION}" != "unstable" ]
					then
						echo "deb ${LIVE_MIRROR_BOOTSTRAP_SECURITY} ${LIVE_DISTRIBUTION}/updates ${LIVE_SECTIONS}" >> chroot/etc/apt/sources.list

						if [ "${LIVE_SOURCE}" = "enabled" ]
						then
							echo "deb-src ${LIVE_MIRROR_BOOTSTRAP_SECURITY} ${LIVE_DISTRIBUTION}/updates ${LIVE_SECTIONS}" >> chroot/etc/apt/sources.list
						fi
					fi
					;;

				ubuntu)
					echo "deb ${LIVE_MIRROR_BOOTSTRAP_SECURITY} ${LIVE_DISTRIBUTION}-security ${LIVE_SECTIONS}" >> chroot/etc/apt/sources.list

					if [ "${LIVE_SOURCE}" = "enabled" ]
					then
						echo "deb-src ${LIVE_MIRROR_BOOTSTRAP_SECURITY} ${LIVE_DISTRIBUTION}-security ${LIVE_SECTIONS}" >> chroot/etc/apt/sources.list
					fi
					;;
			esac
		fi

		# Check local sources.list
		if ls config/chroot_sources/*.bootstrap > /dev/null 2>&1
		then
			echo "" >> chroot/etc/apt/sources.list
			echo "# Custom repositories" >> chroot/etc/apt/sources.list

			for FILE in config/chroot_sources/*.bootstrap
			do
				cat ${FILE} | grep -v "^##" >> chroot/etc/apt/sources.list
			done
		fi

		# Update indices from cache
		if [ "${LH_CACHE_INDICES}" = "enabled" ] && [ -d cache/indices_bootstrap ]
		then
			if ls cache/indices_bootstrap/secring.gpg* > /dev/null 2>&1
			then
				cp -f cache/indices_bootstrap/secring.gpg* chroot/etc/apt
			fi

			if ls cache/indices_bootstrap/trusted.gpg* > /dev/null 2>&1
			then
				cp -f cache/indices_bootstrap/trusted.gpg* chroot/etc/apt
			fi

			if [ -f cache/indices_bootstrap/pkgcache.bin ]
			then
				cp -f cache/indices_bootstrap/pkgcache.bin chroot/var/cache/apt
			fi

			if [ -f cache/indices_bootstrap/srcpkgcache.bin ]
			then
				cp -f cache/indices_bootstrap/srcpkgcache.bin chroot/var/cache/apt
			fi

			if ls cache/indices_bootstrap/*_Packages > /dev/null 2>&1
			then
				cp -f cache/indices_bootstrap/*_Packages chroot/var/lib/apt/lists
			fi

			if ls cache/indices_bootstrap/*_Sources > /dev/null 2>&1
			then
				cp -f cache/indices_bootstrap/*_Sources chroot/var/lib/apt/lists
			fi

			if ls cache/indices_bootstrap/*_Release* > /dev/null 2>&1
			then
				cp -f cache/indices_bootstrap/*_Release* chroot/var/lib/apt/lists
			fi

			if [ "${LH_APT}" = "aptitude" ] && [ ! -x /usr/bin/aptitude ]
			then
				Chroot "apt-get install --yes --force-yes aptitude"
			fi
		else # Get fresh indices
			# Check local gpg keys
			if ls config/chroot_sources/*.bootstrap.gpg > /dev/null 2>&1
			then
				for FILE in config/chroot_sources/*.bootstrap.gpg
				do
					cp ${FILE} chroot/root
					Chroot "apt-key add /root/`basename ${FILE}`"
					rm -f chroot/root/`basename ${FILE}`
				done
			fi

			# Check local keyring packages
			if ls config/chroot_sources/*.deb > /dev/null 2>&1
			then
				for PACKAGE in config/chroot_sources/*.deb
				do
					cp ${PACKAGE} chroot/root
					Chroot "dpkg -i `basename ${PACKAGE}`"
					rm -f chroot/root/`basename ${PACKAGE}`
				done
			fi

			# Installing aptitude
			if [ "${LH_APT}" = "apt" ] || [ "${LH_APT}" = "apt-get" ]
			then
				Chroot "apt-get update"
			elif [ "${LH_APT}" = "aptitude" ]
			then
				if [ ! -x /usr/bin/aptitude ]
				then
					Chroot "apt-get update"
					Chroot "apt-get install --yes --force-yes aptitude"
				fi

				Chroot "aptitude update"
			fi

			# Installing keyring packages
			if [ -n "${LIVE_KEYRING_PACKAGES}" ]
			then
				Chroot "apt-get install --yes --force-yes ${LIVE_KEYRING_PACKAGES}"
				Chroot "apt-get update"
			fi

			if [ "${LH_CACHE_INDICES}" = "enabled" ]
			then
				mkdir -p cache/indices_bootstrap

				cp -f chroot/etc/apt/secring.gpg* cache/indices_bootstrap
				cp -f chroot/etc/apt/trusted.gpg* cache/indices_bootstrap

				cp -f chroot/var/cache/apt/pkgcache.bin cache/indices_bootstrap
				cp -f chroot/var/cache/apt/srcpkgcache.bin cache/indices_bootstrap

				cp -f chroot/var/lib/apt/lists/*_Packages cache/indices_bootstrap
				cp -f chroot/var/lib/apt/lists/*_Sources cache/indices_bootstrap
				cp -f chroot/var/lib/apt/*_Release* cache/indices_bootstrap
			fi
		fi

		# Creating stage file
		Create_stagefile .stage/chroot_sources
		;;

	remove)
		Echo_message "Deconfiguring file /etc/apt/sources.list"

		# Checking lock file
		Check_lockfile .lock

		# Creating lock file
		Create_lockfile .lock

		# Configure generic indices
		if [ "${LIVE_BINARY_INDICES}" = "enabled" ]
		then
			# Don't do anything if it's not required
			if [ "${LIVE_MIRROR_BOOTSTRAP}" = "${LIVE_MIRROR_BINARY}" ] && \
			[ "${LIVE_MIRROR_BOOTSTRAP_SECURITY}" = "${LIVE_MIRROR_BINARY_SECURITY}" ]
			then
				exit 0
			fi

			# Cleaning apt list cache
			rm -rf chroot/var/lib/apt/lists
			mkdir -p chroot/var/lib/apt/lists/partial

			echo "deb ${LIVE_MIRROR_BINARY} ${LIVE_DISTRIBUTION} ${LIVE_SECTIONS}" > chroot/etc/apt/sources.list

			if [ "${LIVE_SOURCE}" = "enabled" ]
			then
				echo "deb-src ${LIVE_MIRROR_BINARY} ${LIVE_DISTRIBUTION} ${LIVE_SECTIONS}" >> chroot/etc/apt/sources.list
			fi

			if [ "${LIVE_SECURITY}" = "enabled" ]
			then
				case "${LH_MODE}" in
					debian)
						if [ "${LIVE_DISTRIBUTION}" != "sid" ] && [ "${LIVE_DISTRIBUTION}" != "unstable" ]
						then
							echo "deb ${LIVE_MIRROR_BINARY_SECURITY} ${LIVE_DISTRIBUTION}/updates ${LIVE_SECTIONS}" >> chroot/etc/apt/sources.list

							if [ "${LIVE_SOURCE}" = "enabled" ]
							then
								echo "deb-src ${LIVE_MIRROR_BINARY_SECURITY} ${LIVE_DISTRIBUTION}/updates ${LIVE_SECTIONS}" >> chroot/etc/apt/sources.list
							fi
						fi
						;;

					ubuntu)
						echo "deb ${LIVE_MIRROR_BINARY_SECURITY} ${LIVE_DISTRIBUTION}-security ${LIVE_SECTIONS}" >> chroot/etc/apt/sources.list

						if [ "${LIVE_SOURCE}" = "enabled" ]
						then
							echo "deb-src ${LIVE_MIRROR_BINARY_SECURITY} ${LIVE_DISTRIBUTION}-security ${LIVE_SECTIONS}" >> chroot/etc/apt/sources.list
						fi
						;;
				esac
			fi

			# Check local sources.list
			if ls config/chroot_sources/*.binary > /dev/null 2>&1
			then
				echo "" >> chroot/etc/apt/sources.list
				echo "# Custom repositories" >> chroot/etc/apt/sources.list

				for FILE in config/chroot_sources/*.binary
				do
					cat ${FILE} | grep -v "^##" >> chroot/etc/apt/sources.list
				done
			fi

			# Check local gpg keys
			if ls config/chroot_sources/*.binary.gpg > /dev/null 2>&1
			then
				for FILE in config/chroot_sources/*.binary.gpg
				do
					cp ${FILE} chroot/root
					Chroot "apt-key add /root/`basename ${FILE}`"
					rm -f chroot/root/`basename ${FILE}`
				done
			fi

			case "${LH_APT}" in
				apt|apt-get)
					Chroot "apt-get update"
					;;

				aptitude)
					Chroot "aptitude update"
					;;
			esac
		fi

		# Cleaning apt packages cache
		rm -rf chroot/var/cache/apt
		mkdir -p chroot/var/cache/apt/archives/partial

		# Removing old files
		rm -f chroot/var/lib/dpkg/available-old
		rm -f chroot/var/lib/dpkg/diversions-old
		rm -f chroot/var/lib/dpkg/statoverride-old
		rm -f chroot/var/lib/dpkg/status-old

		# Removing stage file
		rm -f .stage/chroot_sources
		;;

	*)
		Usage
		;;
esac