#!/bin/sh

# cgi - simple webfrontend for live-helper (cronjob)
# Copyright (C) 2006-2010 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.

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

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

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

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

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

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

# Creating lock file
touch /var/lock/live-helper.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-helper.cgi: remove web build (`date -d yesterday +%Y%m%d.%H`*)." >> /var/log/live
fi

# Ok from here spin through the live-helper.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 the remote address, atchitecture, and distribution
		_REMOTE_ADDR=`awk -F\" '/^REMOTE_ADDR=/{print $2}' ${_FILE}`
		_LH_ARCHITECTURE=`awk -F\" '/^LH_ARCHITECTURE=/{print $2}' ${_FILE}`
		_LH_DISTRIBUTION=`awk -F\" '/^LH_DISTRIBUTION=/{print $2}' ${_FILE}`
		_LH_PACKAGES_LISTS=`awk -F\" '/^LH_PACKAGES_LISTS=/{print $2}' ${_FILE}`
		_LH_PACKAGES=`awk -F\" '/^LH_PACKAGES=/{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` ${HOSTNAME} live-helper.cgi: begin web build (${_BUILD})." >> /var/log/live

		# Creating build directory which also creates the config/chroot_sources folder
		mkdir -p "${_TEMPDIR}"/"${_BUILD}"/config/chroot_sources

		# The next two tests are for unofficial third party repositories
		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
		cd "${_TEMPDIR}"/"${_BUILD}"
		lh config -c ${_FILE} >> "${_TEMPDIR}"/"${_BUILD}"/log 2>&1
		_ERRORCONFIG="${?}"
		lh 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 [ "${_ERRORCONFIG}" -eq "0" ] && [ "${_ERRORBUILD}" -eq "0" ]
		then
			_STATUS="maybe-successful"
			echo "${_REMOTE_ADDR} - - [${_DATE_END}] \"${_BUILD} ${_LH_ARCHITECTURE}/${_LH_DISTRIBUTION}/${_LH_PACKAGES_LISTS}/${_LH_PACKAGES}\" 200 - \"-\" \"\"">>/var/log/live-cgi.builds 
		else
			_STATUS="maybe-failed"
			echo "${_REMOTE_ADDR} - - [${_DATE_END}] \"${_BUILD} ${_LH_ARCHITECTURE}/${_LH_DISTRIBUTION}/${_LH_PACKAGES_LISTS}/${_LH_PACKAGES}\" 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` ${HOSTNAME} live-helper.cgi: end web build (${_BUILD}: ${_STATUS})." >> /var/log/live
	done
fi