coinboot-download-helper

#!/bin/sh -e

# Copyright (C) 2018 Gunter Miegel coinboot.io
#
# This file is part of Coinboot.
#
# Coinboot is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.

echo '--- Configured environment ---'
env
echo '------------------------------'

WGET='wget --retry-connrefused --waitretry=5 --read-timeout=20 --timeout=15 -t 0'
CURL='curl --max-time 5 --retry-max-time 20 --retry 999'
BOOTDIR=/var/lib/tftpboot
## initramfs and kernel vmlinuz ##
# RELEASE is set via an environment variable under ./conf/environment
# If the value is 'latest' we determine the latest release, else we use the set value.

if [ $RELEASE = latest ]; then
    RESPONSE=$($CURL --silent "https://api.github.com/repos/frzb/coinboot-debirf/tags")
    sleep 5
    while ! TAG=$(echo $RESPONSE | jq -r '.[0].name'); do
      echo "Calling the Github API has failed, repeat ..."
      RESPONSE=$($CURL --silent "https://api.github.com/repos/frzb/coinboot-debirf/tags")
      sleep 5
    done
  echo "Using latest coinboot-debirf release: $TAG"
fi
URL=https://github.com/frzb/coinboot-debirf/releases/download/${TAG}
if [ -z $KERNEL ]; then
  KERNEL=4.15.0-45-generic
fi
VMLINUZ=coinboot-vmlinuz-$KERNEL
INITRAMFS=coinboot-initramfs-$KERNEL

if ! [ -f $BOOTDIR/$VMLINUZ ]; then
$WGET $URL/$VMLINUZ -P $BOOTDIR
fi

if ! [ -f $BOOTDIR/$INITRAMFS ]; then
$WGET $URL/$INITRAMFS -P $BOOTDIR
fi

if ! [ -h $BOOTDIR/vmlinuz ] || [ $(readlink $BOOTDIR/vmlinuz) = $BOOTDIR/$VMLINUZ ]; then
  ln -sfv $BOOTDIR/$VMLINUZ $BOOTDIR/vmlinuz
fi

if ! [ -h $BOOTDIR/initramfs ] || [ $(readlink $BOOTDIR/initramfs) = $BOOTDIR/$INITRAMFS ]; then
  ln -sfv $BOOTDIR/$INITRAMFS $BOOTDIR/initramfs
fi

## iPXE network bootloader for BIOS and UEFI ##
# We use a customised build with remote logging
IPXE_RELEASE=20190130
URL=https://github.com/frzb/coinboot-ipxe/releases/download/${IPXE_RELEASE}
BIOS=undionly.kpxe
UEFI=ipxe.efi

if ! [ -f $BOOTDIR/$BIOS ]; then
  $WGET $URL/$BIOS -P $BOOTDIR
fi

if ! [ -f $BOOTDIR/$UEFI ]; then
  $WGET $URL/$UEFI -P $BOOTDIR
fi