#!/bin/sh

## live-build(7) - System Build Scripts
## Copyright (C) 2006-2013 Daniel Baumann <daniel@debian.org>
##
## 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.

# Including common functions
. /usr/lib/live/build.sh

# Reading defaults
if [ -r /etc/default/live-build-cgi ]
then
	. /etc/default/live-build-cgi
else
	echo "E: /etc/default/live-build-cgi missing"
	exit 1
fi

# Exit if disabled
if [ "${_WEBBUILD}" != "true" ]
then
	exit 0
fi

_HOSTNAME="$(hostname -f)"

# Turn on debug if true
if [ "${_DEBUG}" = "true" ]
then
	set -x
fi

# Checking lock file
if [ -f /var/lock/live-build-cgi.lock ]
then
	echo "E: live-build-cgi already/still running."
	exit 1
fi

# Creating lock trap
trap "test -f /var/lock/live-build-cgi.lock && rm -f /var/lock/live-build-cgi.lock; exit 0" 0 1 2 3 9 15

# Creating lock file
touch /var/lock/live-build-cgi.lock

# Cleanup old builds: cron should be run at least once per hour to take effect
if ls "${_DESTDIR}"/`date -d yesterday +%Y%m%d.%H`* > /dev/null 2>&1
then
	rm -rf "${_DESTDIR}"/`date -d yesterday +%Y%m%d.%H`*

	echo "`date +%b\ %d\ %H:%M:%S` ${_HOSTNAME} live-build-cgi: remove web build (`date -d yesterday +%Y%m%d.%H`*)." >> /var/log/live
fi

# Ok from here spin through the live-build-cgi files we have waiting to build
#if ls "${_TEMPDIR}"/*.build > /dev/null 2>&1
if Find_files ${_TEMPDIR}/*.build
then
	for _FILE in "${_TEMPDIR}"/*.build
	do
		# Pull in variables from the build file.
		. "${_FILE}"

		# Clone the git config to target build directory
		git clone ${_LB_GIT} "${_TEMPDIR}"/"${_BUILD}" >> /var/log/live
		_ERRORGIT="${?}"

		# Now set a variable for the correct build path
		_BUILD_PATH="${_TEMPDIR}/${_BUILD}/images/${_LB_CONFIG}"

		# Drop out some build data for information if something goes wrong.
		echo "`date +%b\ %d\ %H:%M:%S` ${_HOSTNAME} live-build-cgi: begin web build (${_BUILD})." >> /var/log/live

		# Creating directory for the config/package-lists
		mkdir -p "${_BUILD_PATH}"/config/package-lists

		# Add cgipackages.list.chroot
		if [ -n "${_LB_CGIPACKAGES}" ]
		then
			echo "${_LB_CGIPACKAGES}" > "${_BUILD_PATH}"/config/package-lists/cgipackages.list.chroot
		fi

		_DATE_START="`date -R`"
		echo "Begin: ${_DATE_START}" > "${_BUILD_PATH}"/log

		# Generating config here
		if [ "${_ERRORGIT}" -eq "0" ]
		then
			cd "${_BUILD_PATH}"
			# Do config with git and stack on config file params to build
			lb config --distribution "${LB_DISTRIBUTION}" --architectures "${LB_ARCHITECTURES}" --archive-areas "${LB_ARCHIVE_AREAS}" --chroot-filesystem "${LB_CHROOT_FILESYSTEM}" --linux-flavours "${LB_LINUX_FLAVOURS}" --security "${LB_SECURITY}" --apt-indices "${LB_APT_INDICES}" --bootappend-install "${LB_BOOTAPPEND_INSTALL}" --bootappend-live "${LB_BOOTAPPEND_LIVE}" --bootloader "${LB_BOOTLOADER}" --debian-installer "${LB_DEBIAN_INSTALLER}" --iso-application "${LB_ISO_APPLICATION}" --iso-preparer "${LB_ISO_PREPARER}" --iso-publisher "${LB_ISO_PUBLISHER}" --iso-volume "${LB_ISO_VOLUME}" --memtest "${LB_MEMTEST}" --net-root-path "${LB_NET_ROOT_PATH}" --net-root-server "${LB_NET_ROOT_SERVER}" --source-images "${LB_SOURCE_IMAGES}" --source "${LB_SOURCE}"
			_ERRORCONFIG="${?}"
		else
			echo "Config stage skipped. The git clone produced an error: ${_ERRORGIT}" > "${_BUILD_PATH}"/log
		fi

		# Run build if config went ok
		if [ "${_ERRORCONFIG}" -eq "0" ]
		then
			lb build >> "${_BUILD_PATH}"/log 2>&1
			_ERRORBUILD="${?}"
		else
			echo "Build stage skipped. Config produced an error: ${_ERRORCONFIG}" > "${_BUILD_PATH}"/log
		fi

		_DATE_END="`date -R`"
		echo "End: ${_DATE_END}" >> "${_BUILD_PATH}"/log

		# Creating image directory
		mkdir -p "${_DESTDIR}"/"${_BUILD}"

		# Creating mail and logging.
		if [ "${_ERRORGIT}" -eq "0" ] && [ "${_ERRORCONFIG}" -eq "0" ] && [ "${_ERRORBUILD}" -eq "0" ]
		then
			_STATUS="maybe-successful"
			echo "${REMOTE_ADDR} - - `date +[%d/%b/%Y:%H:%m:%S\ %z]` \"${_BUILD} ${LB_ARCHITECTURES}/${LB_DISTRIBUTION}/${_LB_CGIPACKAGES}\" 200 - \"-\" \"\"">>/var/log/live-cgi.builds
		else
			_STATUS="maybe-failed"
			echo "${REMOTE_ADDR} - - `date +[%d/%b/%Y:%H:%m:%S\ %z]` \"${_BUILD} ${LB_ARCHITECTURES}/${LB_DISTRIBUTION}/${_LB_CGIPACKAGES}\" 404 - \"-\" \"\"">>/var/log/live-cgi.builds
		fi

		sed -e "s/BUILD/${_BUILD}/g" \
		    -e "s/EMAIL/${_EMAIL}/" \
		    -e "s/VERSION/${VERSION}/" \
		    -e "s/DATE_START/${_DATE_START}/" \
		    -e "s/DATE_END/${_DATE_END}/" \
		    -e "s/STATUS/${_STATUS}/" \
		    -e "s#SERVER#${_SERVER}#" \
		"${_TEMPLATES}"/mail.txt > "${_DESTDIR}"/"${_BUILD}"/mail

cat >> "${_DESTDIR}"/"${_BUILD}"/mail << EOF

---

Here's a list of all build-options that were used to build your image:

EOF

		cat "${_TEMPDIR}"/"${_BUILD}".build >> "${_DESTDIR}"/"${_BUILD}"/mail

		# Moving binary image
		#if ls "${_TEMPDIR}"/"${_BUILD}"/binary*.* > /dev/null 2>&1
		if Find_files ${_BUILD_PATH}/binary*.*
		then
			mv "${_BUILD_PATH}"/binary*.* "${_DESTDIR}"/"${_BUILD}"
		fi

		# Moving source image
		#if ls "${_TEMPDIR}"/"${_BUILD}"/source.* > /dev/null 2>&1
		if Find_files ${_BUILD_PATH}/source.*
		then
			mv "${_BUILD_PATH}"/source.* "${_DESTDIR}"/"${_BUILD}"
		fi

		# Moving build
		mv "${_TEMPDIR}"/"${_BUILD}".build "${_DESTDIR}"/"${_BUILD}"/build

		# Moving log
		mv "${_BUILD_PATH}"/log "${_DESTDIR}"/"${_BUILD}"

		# Generating md5sum
		cd "${_DESTDIR}"/"${_BUILD}"
		md5sum * > md5sum
		cd "${OLDPWD}"

		# Sending mail
		cat "${_DESTDIR}"/"${_BUILD}"/mail | /usr/sbin/sendmail -t

		# Unmounting devpts-live
		#if ls "${_TEMPDIR}"/"${_BUILD}"/chroot/dev/pts/* > /dev/null 2>&1
		if Find_files ${_BUILD_PATH}/chroot/dev/pts/*
		then
			umount "${_BUILD_PATH}"/chroot/dev/pts
		fi

		# Unmounting proc
		if [ -f "${_BUILD_PATH}"/chroot/proc/version ]
		then
			umount "${_BUILD_PATH}"/chroot/proc
		fi

		# Unmounting sysfs
		if [ -d "${_BUILD_PATH}"/chroot/sys/kernel ]
		then
			umount "${_BUILD_PATH}"/chroot/sys
		fi

		# Removing build directory
		rm -rf "${_TEMPDIR}"/"${_BUILD}"

		echo "`date +%b\ %d\ %H:%M:%S` ${_HOSTNAME} live-build-cgi: end web build (${_BUILD}: ${_STATUS})." >> /var/log/live
	done
fi