#tool/distro specific functions for fetching, building and installing dependencies

fetch_source () {
	download_untar "$REQUIRED_URL" "src/"
	download_untar "$REQUIRED_LIBKMOD_URL" "src/"
	# Patch PATH environment
	sed -s -i -r 's#"/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin(:/sbin:/bin)?"#& ":/opt/openslx/usr/sbin:/opt/openslx/usr/bin:/opt/openslx/sbin:/opt/openslx/bin"#g' src/systemd-*/src/core/main.c
	sed -s -i -r 's#"PATH=/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"#& ":/opt/openslx/usr/sbin:/opt/openslx/usr/bin:/opt/openslx/sbin:/opt/openslx/bin"#g' src/systemd-*/src/nspawn/nspawn.c
}

build () {
	#build libkmod
	pinfo "Building libkmod"
	cd "${MODULE_DIR}/src/$REQUIRED_LIBKMOD_VERSION"
	./configure || perror "./configure kmod failed."
	make || perror "kmod make failed."
	make install || perror "kmod make install failed."
	cd - &> /dev/null

	#build systemd
	pinfo "Building systemd"
	cd "${MODULE_DIR}/src/$REQUIRED_VERSION"
	pinfo "calling configure"
	./configure --disable-manpages --enable-split-usr --sysconfdir="/etc" --enable-gtk-doc-html=no --disable-nls --disable-microhttpd --disable-bootchart --disable-quotacheck --disable-hostnamed --disable-timedated --disable-localed --disable-coredump --disable-keymap --without-python --enable-blkid --enable-acl --enable-pam|| perror "configure failed."
	pinfo "calling make"
	make || perror "make failed."
	pinfo "calling make install"
	DESTDIR="${MODULE_BUILD_DIR}" make install || perror "make install failed."
	cd - &> /dev/null
	# Delete unneeded services
	pinfo "Deleting unneeded services"
	local SERVICE=
	local OTHER=
	for SERVICE in $REQUIRED_DISABLED_SERVICES; do
		find "${MODULE_BUILD_DIR}" -name "$SERVICE" -exec rm -r {} \;
		for OTHER in $(grep -l -r "$SERVICE" "$MODULE_BUILD_DIR/usr/lib/systemd/system"); do
			sed -i -r "s#\s*$SERVICE\s*# #g" "$OTHER"
		done
	done
}

post_copy() {
	# dont clear systemd log at startup
	sed -i "s/TTYVTDisallocate=yes/TTYVTDisallocate=no/g" "${TARGET_BUILD_DIR}/usr/lib/systemd/system/getty@.service"

	#old agetty version doesn't support --noclear option in getty service
	if [ "x$(dpkg -s util-linux | grep Version: | cut -d' ' -f2)" == "x2.19.1-2ubuntu3" ];
	then
		sed -i.bak "s/ExecStart=-\/sbin\/agetty --noclear %I 38400 linux/ExecStart=-\/sbin\/agetty %I 38400 linux/g" "${TARGET_BUILD_DIR}/usr/lib/systemd/system/getty@.service"
	fi

	# add nfs to modules-load list
	echo "nfs" > "${TARGET_BUILD_DIR}/etc/modules-load.d/nfs.conf"

	# add pam_systemd.so to pam modules directory
	if [ -e "${MODULE_BUILD_DIR}/usr/lib/security/pam_systemd.so" ]; then
		cp "${MODULE_BUILD_DIR}/usr/lib/security/pam_systemd.so" "${TARGET_BUILD_DIR}/lib/security/"
	else
		pdebug "No such file: ${MODULE_BUILD_DIR}/usr/lib/security/pam_systemd.so"
	fi
}