#!/bin/sh
#
# Copyright 2014 Hewlett-Packard Development Company, L.P.
# All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
#
set -eu
if [ -f ${TARGET_ROOT}/.distro-name ] ; then
    DISTRO_NAME=$(cat ${TARGET_ROOT}/.distro-name)
else
    DISTRO_NAME=debian
fi
DIB_RELEASE=${DIB_RELEASE:-unstable}
DEBOOTSTRAP_TARBALL=$DIB_IMAGE_CACHE/debootstrap-${DISTRO_NAME}-${DIB_RELEASE}-${ARCH}.tar.gz
if [ -n "$DIB_DEBIAN_MIRROR" ]; then
    echo "Use of DIB_DEBIAN_MIRROR environment variable to configure mirror is deprecated."
    echo "Please use DIB_DISTRIBUTION_MIRROR instead."
    DIB_DISTRIBUTION_MIRROR=$DIB_DEBIAN_MIRROR
fi
DIB_DISTRIBUTION_MIRROR=${DIB_DISTRIBUTION_MIRROR:-http://http.debian.net/debian}
http_proxy=${http_proxy:-}

set -x
if [ -n "$DIB_OFFLINE" ] && [ -f $DEBOOTSTRAP_TARBALL ] ; then
    echo $DEBOOTSTRAP_TARBALL found in cache. Using.
    sudo tar -C $TARGET_ROOT --numeric-owner -xzf $DEBOOTSTRAP_TARBALL
else
    echo Building new tarball for Debian $DIB_RELEASE ARCH=$ARCH
    ADD_PACKAGES=cloud-init,cloud-utils,cloud-initramfs-growroot,sudo,adduser,locales,openssh-server,file,less,kbd,curl,rsync,bash-completion,linux-image-amd64
    if [ -f ${TARGET_ROOT}/.extra-packages ] ; then
        ADD_PACKAGES=${ADD_PACKAGES},$(cat ${TARGET_ROOT}/.extra-packages)
    fi
    sudo sh -c "http_proxy=$http_proxy debootstrap --verbose \
        --arch=${ARCH} \
        --include=${ADD_PACKAGES} \
        $DIB_RELEASE \
        $TARGET_ROOT \
        $DIB_DISTRIBUTION_MIRROR"
    echo "Customizing result for cloud use"
    sudo sed -i "s/PermitRootLogin yes/PermitRootLogin without-password/" $TARGET_ROOT/etc/ssh/sshd_config
    sudo chroot ${TARGET_ROOT} adduser --gecos Debian-cloud-init-user --disabled-password --quiet debian
    sudo install -d -m 0755 -o root -g root ${TARGET_ROOT}/etc/sudoers.d
    sudo sh -c "echo 'debian ALL=(ALL) NOPASSWD:ALL' > ${TARGET_ROOT}/etc/sudoers.d/debian-cloud-init"
    sudo chmod 0440 ${TARGET_ROOT}/etc/sudoers.d/debian-cloud-init
    sudo sh -c "echo 'proc /proc proc nodev,noexec,nosuid 0 0
LABEL=cloudimg-rootfs / ext4 errors=remount-ro 0 1
' > ${TARGET_ROOT}/etc/fstab"
    sudo sh -c "echo 'blacklist pcspkr' > ${TARGET_ROOT}/etc/modprobe.d/blacklist.conf"
    sudo sh -c "echo 'debian' > ${TARGET_ROOT}/etc/hostname"
    echo Caching debootstrap result in $DEBOOTSTRAP_TARBALL
    sudo tar -C $TARGET_ROOT -zcf $DEBOOTSTRAP_TARBALL .
fi