#!/bin/sh
#-
# Copyright (c) 2013-2015 The FreeBSD Foundation
# Copyright (c) 2013 Glen Barber
# Copyright (c) 2011 Nathan Whitehorn
# All rights reserved.
#
# Portions of this software were developed by Glen Barber
# under sponsorship from the FreeBSD Foundation.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# release.sh: check out source trees, and build release components with
#  totally clean, fresh trees.
# Based on release/generate-release.sh written by Nathan Whitehorn
#
# $FreeBSD$
#

PATH="/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin"
export PATH

VERSION=2

# Prototypes that can be redefined per-chroot or per-target.
load_chroot_env() { }
load_target_env() { }

# The directory within which the release will be built.
CHROOTDIR="/scratch"
RELENGDIR="$(realpath $(dirname $(basename ${0})))"

# The default version control system command to obtain the sources.
VCSCMD="svn checkout"

# The default svn checkout server, and svn branches for src/, doc/,
# and ports/.
SVNROOT="svn://svn.FreeBSD.org/"
SRCBRANCH="base/head@rHEAD"
DOCBRANCH="doc/head@rHEAD"
PORTBRANCH="ports/head@rHEAD"

# Set for embedded device builds.
EMBEDDEDBUILD=

# Sometimes one needs to checkout src with --force svn option.
# If custom kernel configs copied to src tree before checkout, e.g.
SRC_FORCE_CHECKOUT=

# The default make.conf and src.conf to use.  Set to /dev/null
# by default to avoid polluting the chroot(8) environment with
# non-default settings.
MAKE_CONF="/dev/null"
SRC_CONF="/dev/null"

# The number of make(1) jobs, defaults to the number of CPUs available for
# buildworld, and half of number of CPUs available for buildkernel.
WORLD_FLAGS="-j$(sysctl -n hw.ncpu)"
KERNEL_FLAGS="-j$(( $(( $(sysctl -n hw.ncpu) + 1 )) / 2))"

MAKE_FLAGS="-s"

# The name of the kernel to build, defaults to GENERIC.
KERNEL="GENERIC"

# Set to non-empty value to disable checkout of doc/ and/or ports/.  Disabling
# ports/ checkout also forces NODOC to be set.
NODOC=
NOPORTS=

# Set to non-empty value to build dvd1.iso as part of the release.
WITH_DVD=
WITH_COMPRESSED_IMAGES=

# Set to non-empty value to build virtual machine images as part of
# the release.
WITH_VMIMAGES=
WITH_COMPRESSED_VMIMAGES=

# Set to non-empty value to build virtual machine images for various
# cloud providers as part of the release.
WITH_CLOUDWARE=

usage() {
	echo "Usage: $0 [-c release.conf]"
	exit 1
}

while getopts c: opt; do
	case ${opt} in
	c)
		RELEASECONF="${OPTARG}"
		if [ ! -e "${RELEASECONF}" ]; then
			echo "ERROR: Configuration file ${RELEASECONF} does not exist."
			exit 1
		fi
		# Source the specified configuration file for overrides
		. ${RELEASECONF}
		;;
	\?)
		usage
		;;
	esac
done
shift $(($OPTIND - 1))

# Fix for backwards-compatibility with release.conf that does not have the
# trailing '/'.
case ${SVNROOT} in
	*svn*)
		SVNROOT="${SVNROOT}/"
		;;
	*)
		;;
esac

# Prefix the branches with the SVNROOT for the full checkout URL.
SRCBRANCH="${SVNROOT}${SRCBRANCH}"
DOCBRANCH="${SVNROOT}${DOCBRANCH}"
PORTBRANCH="${SVNROOT}${PORTBRANCH}"

if [ -n "${EMBEDDEDBUILD}" ]; then
	WITH_DVD=
	WITH_COMPRESSED_IMAGES=
	NODOC=yes
fi

# If PORTS is set and NODOC is unset, force NODOC=yes because the ports tree
# is required to build the documentation set.
if [ -n "${NOPORTS}" ] && [ -z "${NODOC}" ]; then
	echo "*** NOTICE: Setting NODOC=1 since ports tree is required"
	echo "            and NOPORTS is set."
	NODOC=yes
fi

# If NOPORTS and/or NODOC are unset, they must not pass to make as variables.
# The release makefile verifies definedness of NOPORTS/NODOC variables
# instead of their values.
DOCPORTS=
if [ -n "${NOPORTS}" ]; then
	DOCPORTS="NOPORTS=yes "
fi
if [ -n "${NODOC}" ]; then
	DOCPORTS="${DOCPORTS}NODOC=yes"
fi

# The aggregated build-time flags based upon variables defined within
# this file, unless overridden by release.conf.  In most cases, these
# will not need to be changed.
CONF_FILES="__MAKE_CONF=${MAKE_CONF} SRCCONF=${SRC_CONF}"
if [ -n "${TARGET}" ] && [ -n "${TARGET_ARCH}" ]; then
	ARCH_FLAGS="TARGET=${TARGET} TARGET_ARCH=${TARGET_ARCH}"
else
	ARCH_FLAGS=
fi
load_chroot_env
CHROOT_MAKEENV="${CHROOT_MAKEENV} MAKEOBJDIRPREFIX=${CHROOTDIR}/tmp/obj"
CHROOT_WMAKEFLAGS="${MAKE_FLAGS} ${WORLD_FLAGS} ${CONF_FILES}"
CHROOT_IMAKEFLAGS="${CONF_FILES}"
CHROOT_DMAKEFLAGS="${CONF_FILES}"
RELEASE_WMAKEFLAGS="${MAKE_FLAGS} ${WORLD_FLAGS} ${ARCH_FLAGS} ${CONF_FILES}"
RELEASE_KMAKEFLAGS="${MAKE_FLAGS} ${KERNEL_FLAGS} KERNCONF=\"${KERNEL}\" ${ARCH_FLAGS} ${CONF_FILES}"
RELEASE_RMAKEFLAGS="${ARCH_FLAGS} KERNCONF=\"${KERNEL}\" ${CONF_FILES} \
	${DOCPORTS} WITH_DVD=${WITH_DVD} WITH_VMIMAGES=${WITH_VMIMAGES} \
	WITH_CLOUDWARE=${WITH_CLOUDWARE}"

# Force src checkout if configured
FORCE_SRC_KEY=
if [ -n "${SRC_FORCE_CHECKOUT}" ]; then
	FORCE_SRC_KEY="--force"
fi

if [ -z "${CHROOTDIR}" ]; then
	echo "Please set CHROOTDIR."
	exit 1
fi

if [ $(id -u) -ne 0 ]; then
	echo "Needs to be run as root."
	exit 1
fi

set -e # Everything must succeed

mkdir -p ${CHROOTDIR}/usr

if [ -z "${SRC_UPDATE_SKIP}" ]; then
	${VCSCMD} ${FORCE_SRC_KEY} ${SRCBRANCH} ${CHROOTDIR}/usr/src
fi
if [ -z "${NODOC}" ] && [ -z "${DOC_UPDATE_SKIP}" ]; then
	${VCSCMD} ${DOCBRANCH} ${CHROOTDIR}/usr/doc
fi
if [ -z "${NOPORTS}" ] && [ -z "${PORTS_UPDATE_SKIP}" ]; then
	${VCSCMD} ${PORTBRANCH} ${CHROOTDIR}/usr/ports
fi

if [ -z "${CHROOTBUILD_SKIP}" ]; then
	cd ${CHROOTDIR}/usr/src
	env ${CHROOT_MAKEENV} make ${CHROOT_WMAKEFLAGS} buildworld
	env ${CHROOT_MAKEENV} make ${CHROOT_IMAKEFLAGS} installworld \
		DESTDIR=${CHROOTDIR}
	env ${CHROOT_MAKEENV} make ${CHROOT_DMAKEFLAGS} distribution \
		DESTDIR=${CHROOTDIR}
fi
mount -t devfs devfs ${CHROOTDIR}/dev
cp /etc/resolv.conf ${CHROOTDIR}/etc/resolv.conf
trap "umount ${CHROOTDIR}/dev" EXIT # Clean up devfs mount on exit

# If MAKE_CONF and/or SRC_CONF are set and not character devices (/dev/null),
# copy them to the chroot.
if [ -e ${MAKE_CONF} ] && [ ! -c ${MAKE_CONF} ]; then
	mkdir -p ${CHROOTDIR}/$(dirname ${MAKE_CONF})
	cp ${MAKE_CONF} ${CHROOTDIR}/${MAKE_CONF}
fi
if [ -e ${SRC_CONF} ] && [ ! -c ${SRC_CONF} ]; then
	mkdir -p ${CHROOTDIR}/$(dirname ${SRC_CONF})
	cp ${SRC_CONF} ${CHROOTDIR}/${SRC_CONF}
fi

# Embedded builds do not use the 'make release' target.
if [ -n "${EMBEDDEDBUILD}" ]; then
	# If a crochet configuration file exists in *this* checkout of
	# release/, copy it to the /tmp/external directory within the chroot.
	# This allows building embedded releases without relying on updated
	# scripts and/or configurations to exist in the branch being built.
	load_target_env
	if [ -e ${RELENGDIR}/tools/${XDEV}/crochet-${KERNEL}.conf ] && \
		[ -e ${RELENGDIR}/${XDEV}/release.sh ]; then
			mkdir -p ${CHROOTDIR}/tmp/external/${XDEV}/
			cp ${RELENGDIR}/tools/${XDEV}/crochet-${KERNEL}.conf \
				${CHROOTDIR}/tmp/external/${XDEV}/crochet-${KERNEL}.conf
			/bin/sh ${RELENGDIR}/${XDEV}/release.sh
	fi
	# If the script does not exist for this architecture, exit.
	# This probably should be checked earlier, but allowing the rest
	# of the build process to get this far will at least set up the
	# chroot environment for testing.
	exit 0
else
	# Not embedded.
	continue
fi

if [ -d ${CHROOTDIR}/usr/ports ]; then
	# Run ldconfig(8) in the chroot directory so /var/run/ld-elf*.so.hints
	# is created.  This is needed by ports-mgmt/pkg.
	chroot ${CHROOTDIR} /etc/rc.d/ldconfig forcerestart

	## Trick the ports 'run-autotools-fixup' target to do the right thing.
	_OSVERSION=$(sysctl -n kern.osreldate)
	REVISION=$(chroot ${CHROOTDIR} make -C /usr/src/release -V REVISION)
	BRANCH=$(chroot ${CHROOTDIR} make -C /usr/src/release -V BRANCH)
	UNAME_r=${REVISION}-${BRANCH}
	if [ -d ${CHROOTDIR}/usr/doc ] && [ -z "${NODOC}" ]; then
		PBUILD_FLAGS="OSVERSION=${_OSVERSION} BATCH=yes"
		PBUILD_FLAGS="${PBUILD_FLAGS} UNAME_r=${UNAME_r}"
		PBUILD_FLAGS="${PBUILD_FLAGS} OSREL=${REVISION}"
		chroot ${CHROOTDIR} make -C /usr/ports/textproc/docproj \
			${PBUILD_FLAGS} OPTIONS_UNSET="FOP IGOR" \
			install clean distclean
	fi
fi

load_target_env
eval chroot ${CHROOTDIR} make -C /usr/src ${RELEASE_WMAKEFLAGS} buildworld
eval chroot ${CHROOTDIR} make -C /usr/src ${RELEASE_KMAKEFLAGS} buildkernel
eval chroot ${CHROOTDIR} make -C /usr/src/release ${RELEASE_RMAKEFLAGS} \
	release
eval chroot ${CHROOTDIR} make -C /usr/src/release ${RELEASE_RMAKEFLAGS} \
	install DESTDIR=/R WITH_COMPRESSED_IMAGES=${WITH_COMPRESSED_IMAGES} \
	WITH_COMPRESSED_VMIMAGES=${WITH_COMPRESSED_VMIMAGES}