#!/bin/sh

## live-build(7) - System Build Scripts
## Copyright (C) 2006-2012 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
( . "${LIVE_BUILD}/scripts/build.sh" > /dev/null 2>&1 || true ) || . /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}" != "enabled" ]
then
	exit 0
fi

_HOSTNAME="$(hostname -f)"

# Turn on debug if enabled
if [ "${_DEBUG}" = "enabled" ]
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 the variables we want from the config file.
		# Pul in the build number
		_BUILD=`awk -F\" '/^_BUILD=/{print $2}' ${_FILE}`
		# Pull in the email address
		_EMAIL=`awk -F\" '/^_EMAIL=/{print $2}' ${_FILE}`
		# Pull in cgipackages for config/package-lists/cgipackages.list.chroot
		_LB_CGIPACKAGES=`awk -F\" '/^_LB_CGIPACKAGES=/{print $2}' ${_FILE}`
		# Pull in config for git clone
		_LB_CONFIG=`awk -F\" '/^_LB_CONFIG=/{print $2}' ${_FILE}`
		# Pull in the remote address, atchitecture, distribution, and package-lists.
		_REMOTE_ADDR=`awk -F\" '/^REMOTE_ADDR=/{print $2}' ${_FILE}`
		_LB_ARCHITECTURES=`awk -F\" '/^LB_ARCHITECTURES=/{print $2}' ${_FILE}`
		_LB_DISTRIBUTION=`awk -F\" '/^LB_DISTRIBUTION=/{print $2}' ${_FILE}`
		# Pull in the custom bootstrap
		_CUSTOM_BOOTSTRAP=`awk -F\" '/^_CUSTOM_BOOTSTRAP=/{print $2}' ${_FILE}`
		# Pull in the custom binary
		_CUSTOM_BINARY=`awk -F\" '/^_CUSTOM_BINARY=/{print $2}' ${_FILE}`

		# 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

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

		# Creating build directory and the config/package-lists
		mkdir -p "${_TEMPDIR}"/"${_BUILD}"/config/package-lists

		# The next two tests are for unofficial third party archives
		if [ -n "${_LB_CGIPACKAGES}" ]
		then
			echo "${_LB_CGIPACKAGES}" > "${_TEMPDIR}"/"${_BUILD}"/config/package-lists/cgipackages.list.chroot
		fi

		# Creating the config/chroot_sources folder
		mkdir -p "${_TEMPDIR}"/"${_BUILD}"/config/chroot_sources

		# The next two tests are for unofficial third party archives
		if [ -n "${_CUSTOM_BOOTSTRAP}" ]
		then
			echo "${_CUSTOM_BOOTSTRAP}" > "${_TEMPDIR}"/"${_BUILD}"/config/chroot_sources/custom.bootstrap
		fi

		if [ -n "${_CUSTOM_BINARY}" ]
		then
			echo "${_CUSTOM_BINARY}" > "${_TEMPDIR}"/"${_BUILD}"/config/chroot_sources/custom.binary
		fi

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

		# Generating image here
		cd "${_TEMPDIR}"/"${_BUILD}"
		# Stack on config file params to build dir
		lb config -c ${_FILE} >> "${_TEMPDIR}"/"${_BUILD}"/log 2>&1
		_ERRORCONFIG="${?}"
		# Run build
		lb build >> "${_TEMPDIR}"/"${_BUILD}"/log 2>&1
		_ERRORBUILD="${?}"

		_DATE_END="`date -R`"
		echo "End: ${_DATE_END}" >> "${_TEMPDIR}"/"${_BUILD}"/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 ${_TEMPDIR}/${_BUILD}/binary*.*
		then
			mv "${_TEMPDIR}"/"${_BUILD}"/binary*.* "${_DESTDIR}"/"${_BUILD}"
		fi

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

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

		# Moving log
		mv "${_TEMPDIR}"/"${_BUILD}"/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 ${_TEMPDIR}/${_BUILD}/chroot/dev/pts/*
		then
			umount "${_TEMPDIR}"/${_BUILD}/chroot/dev/pts
		fi

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

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