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#!/bin/sh

## live-build(7) - System Build Scripts
## 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

# Including common functions
[ -e "${LIVE_BUILD}/scripts/build.sh" ] && . "${LIVE_BUILD}/scripts/build.sh" || . /usr/lib/live/build.sh

# Setting static variables
DESCRIPTION="Manage /etc/apt/apt.conf"
USAGE="${PROGRAM} {install|install-binary|remove} [--force]"

# Processing arguments and configuration files
Init_config_data "${@}"

# Requiring stage file
Require_stagefiles config bootstrap

CONFD="chroot/etc/apt/apt.conf.d"

case "${1}" in
	install|install-binary)
		Echo_message "Configuring file /etc/apt/apt.conf"

		# Checking stage file
		Check_stagefile

		# Acquire lock file
		Acquire_lockfile

		mkdir -p ${CONFD}

		# Configuring apt ftp proxy
		if [ -n "${LB_APT_FTP_PROXY}" ]
		then
			echo "Acquire::ftp::Proxy \"${LB_APT_FTP_PROXY}\";" > ${CONFD}/00ftp-proxy
		fi

		# Configuring apt http proxy
		if [ -n "${LB_APT_HTTP_PROXY}" ]
		then
			echo "Acquire::http::Proxy \"${LB_APT_HTTP_PROXY}\";" > ${CONFD}/00http-proxy
		fi

		# Configuring apt pipeline
		if [ -n "${LB_APT_PIPELINE}" ]
		then
			echo "Acquire::http::Pipeline-Depth \"${LB_APT_PIPELINE}\";" > ${CONFD}/00pipeline
		fi

		# Configuring apt recommends
		case "${LB_APT_RECOMMENDS}" in
			true)
				echo "APT::Install-Recommends \"true\";" > ${CONFD}/00recommends
				echo "Aptitude::Recommends-Important \"true\";" >> ${CONFD}/00recommends
				;;

			false)
				echo "APT::Install-Recommends \"false\";" > ${CONFD}/00recommends
				echo "Aptitude::Recommends-Important \"false\";" >> ${CONFD}/00recommends
				;;
		esac

		# Configuring apt secure
		case "${LB_APT_SECURE}" in
			true)
				echo "APT::Get::AllowUnauthenticated \"false\";" > ${CONFD}/00secure
				echo "Aptitude::CmdLine::Ignore-Trust-Violations \"false\";" >> ${CONFD}/00secure
				echo "Acquire::AllowInsecureRepositories \"false\";" >> ${CONFD}/00secure
				;;

			false)
				echo "APT::Get::AllowUnauthenticated \"true\";" > ${CONFD}/00secure
				echo "Aptitude::CmdLine::Ignore-Trust-Violations \"true\";" >> ${CONFD}/00secure
				echo "Acquire::AllowInsecureRepositories \"true\";" >> ${CONFD}/00secure
				;;
		esac

		# Configuring apt config
		CONFIG_FILE="config/apt/apt.conf"
		CHROOT_FILE="chroot/etc/apt/apt.conf"
		if [ -f ${CONFIG_FILE} ]; then
			if [ -f ${CHROOT_FILE} ]; then
				mv ${CHROOT_FILE} ${CHROOT_FILE}.orig
			fi
			cp ${CONFIG_FILE} ${CHROOT_FILE}
		fi

		# Configuring apt preferences
		CONFIG_FILE="config/apt/preferences"
		CHROOT_FILE="chroot/etc/apt/preferences"
		if [ -f ${CONFIG_FILE} ]; then
			if [ -f ${CHROOT_FILE} ]; then
				mv ${CHROOT_FILE} ${CHROOT_FILE}.orig
			fi
			cp ${CONFIG_FILE} ${CHROOT_FILE}
		fi

		if Find_files config/apt/*.pref; then
			for CONFIG_FILE in config/apt/*.pref; do
				CHROOT_FILE="chroot/etc/apt/preferences.d/$(basename ${CONFIG_FILE})"
				if [ -f ${CHROOT_FILE} ]; then
					mv ${CHROOT_FILE} ${CHROOT_FILE}.orig
				fi
				cp -aL ${CONFIG_FILE} chroot/etc/apt/preferences.d
			done
		fi

		if Find_files config/packages.chroot/*.deb || Find_files config/packages/*.deb
		then
			CHROOT_FILE="chroot/etc/apt/preferences"
			echo >> ${CHROOT_FILE}
			echo "# Added by lb_chroot_apt ${@}" >> ${CHROOT_FILE}
			echo "Package: *" >> ${CHROOT_FILE}
			echo "Pin: release o=config/packages.chroot" >> ${CHROOT_FILE}

			case "${1}" in
				install)
					# Ensure local packages have priority
					echo "Pin-Priority: 1001" >> ${CHROOT_FILE}
					;;

				install-binary)
					# Ensure local packages are not re-installed during lb_binary
					echo "Pin-Priority: 99" >> ${CHROOT_FILE}

					echo >> ${CHROOT_FILE}
					echo "Package: *" >> ${CHROOT_FILE}
					echo "Pin: release o=debian" >> ${CHROOT_FILE}
					echo "Pin-Priority: 99" >> ${CHROOT_FILE}
					;;
			esac
		fi

		# Creating stage file
		Create_stagefile
		;;

	remove)
		Echo_message "Deconfiguring file /etc/apt/apt.conf"

		# Acquire lock file
		Acquire_lockfile

		# Deconfiguring aptitude ftp proxy
		rm -f ${CONFD}/00ftp-proxy

		# Deconfiguring aptitude http proxy
		rm -f ${CONFD}/00http-proxy

		# Deconfiguring aptitude pipeline
		rm -f ${CONFD}/00pipeline

		# Deconfiguring aptitude recommends
		if [ "${LB_APT_RECOMMENDS}" = "true" ]; then
			rm -f ${CONFD}/00recommends
		fi

		# Deconfiguring aptitude secure
		if [ "${LB_APT_SECURE}" = "true" ]; then
			rm -f ${CONFD}/00secure
		fi

		# Configuring apt config
		CONFIG_FILE="config/apt/apt.conf"
		CHROOT_FILE="chroot/etc/apt/apt.conf"
		if [ -f ${CONFIG_FILE} ]; then
			rm -f ${CHROOT_FILE}

			if [ -f ${CHROOT_FILE}.orig ]; then
				mv ${CHROOT_FILE}.orig ${CHROOT_FILE}
			fi
		fi

		# Deconfiguring apt preferences
		CONFIG_FILE="config/apt/preferences"
		CHROOT_FILE="chroot/etc/apt/preferences"
		if [ -f ${CONFIG_FILE} ]; then
			rm -f ${CHROOT_FILE}

			if [ -f ${CHROOT_FILE}.orig ]; then
				mv ${CHROOT_FILE}.orig ${CHROOT_FILE}
			fi
		elif [ -f ${CHROOT_FILE} ]; then
			# delete additions from lb_chroot_apt install|install-binary to preferences
			sed -i '/# Added by lb_chroot_apt/,$d' ${CHROOT_FILE}
			# delete the last empty line
			sed -i '${/^[[:blank:]]*$/d;}' ${CHROOT_FILE}
			# if the resulting preferences file is empty, we must have created it, remove it
			if [ ! -s ${CHROOT_FILE} ]; then
				rm -f ${CHROOT_FILE}
			fi
		fi

		if Find_files config/apt/*.pref; then
			for CONFIG_FILE in config/apt/*.pref; do
				CHROOT_FILE="chroot/etc/apt/preferences.d/$(basename ${CONFIG_FILE})"

				rm -f ${CHROOT_FILE}

				if [ -f ${CHROOT_FILE}.orig ]; then
					mv ${CHROOT_FILE}.orig ${CHROOT_FILE}
				fi
			done
		fi

		# Removing stage file
		Remove_stagefile
		;;

	*)
		Usage 1
		;;
esac