build-and-run

#!/usr/bin/env bash

set -e

source functions.sh

# Read configuration variable file if it is present
[[ -r "./settings.conf" ]] && . ./settings.conf

if [[ ! -f ./iso/netinstall-18.04.2-desktop-amd64.iso ]]; then
    shout "Downloading netinstall iso"
    pushd ./iso/
    wget -O netinstall-18.04.2-desktop-amd64.iso \
        http://mirrors.edge.kernel.org/ubuntu/dists/bionic/main/installer-amd64/current/images/netboot/mini.iso
    popd
fi

# NOTE: linux-modules-extra version must match kernel version in the netinstall iso
if [[ ! -f ./iso/linux-modules-extra-4.15.0-20-generic_4.15.0-20.21_amd64.deb ]]; then
    shout "Downloading linux-modules-extra"
    pushd ./iso/
    wget http://mirrors.kernel.org/ubuntu/pool/main/l/linux/linux-modules-extra-4.15.0-20-generic_4.15.0-20.21_amd64.deb
    popd
fi

UNIQ=`date | sha1sum | cut -c 1-7`
ISO=`find ./iso/netinstall* | head -n1`

VMS_ROOT="${HOME}/VirtualBox VMs"
VM="Ubuntu-`echo ${ISO} | cut -d "-" -f 2-3`-${UNIQ}"
VM_HDD="${VMS_ROOT}/${VM}/${VM}"
VM_HDD_FILE="${VM_HDD}.vdi"

shout "Setting up"

# Some dependency checks
directory_exists "${VMS_ROOT}" "Cannot find VirtualBox VM directory ${VMS_ROOT}"
file_exists "${ISO}" "Cannot find iso ${ISO}"
is_runnable "vboxmanage" "Cannot find/run vboxmanage"
is_runnable "xorriso" "Cannot find/run xorriso"
is_runnable "7z" "Cannot find/run 7z"
is_runnable "sha1sum" "Cannot find/run sha1sum"

# Remove previously built ISOs
rm -f *.iso
# Cleanup if previous job failed / quit early
rm -rf ./tmp
rm -rf ./initramfs
rm -f ./initramfs.fakeroot

mkdir -p ./tmp
mkdir -p ./initramfs

shout "Extracting ${ISO}"

7z x -o"./tmp/" ${ISO}

pushd ./initramfs

zcat ../tmp/initrd.gz | fakeroot -s ../initramfs.fakeroot cpio -i

mkdir -p seed

cp ../custom.cfg ./seed/

if [[ -f ../proxy.cfg ]]; then
    cp ../proxy.cfg ./seed/proxy.cfg
else
    cp ../proxy.cfg.sample ./seed/proxy.cfg
fi

# Include extra modules non-free modules for network.
ar p ../iso/linux-modules-extra-4.15.0-20-generic_4.15.0-20.21_amd64.deb data.tar.xz | tar xJ

find | fakeroot -i ../initramfs.fakeroot cpio -o -H newc | gzip -c > ../tmp/initrd.gz

popd

shout "Copying configuration"

cp -f ./isolinux.cfg ./tmp/isolinux.cfg
chmod 0755 ./tmp/boot/grub/grub.cfg
cp -f ./grub.cfg ./tmp/boot/grub/grub.cfg

shout "Building custom iso"

xorriso -as mkisofs \
        -isohybrid-mbr /usr/lib/ISOLINUX/isohdpfx.bin \
        -b isolinux.bin \
        -no-emul-boot \
        -boot-load-size 4 \
        -boot-info-table \
        -eltorito-alt-boot \
        -e boot/grub/efi.img \
        -no-emul-boot \
        -isohybrid-gpt-basdat \
        -o ./${VM}-unattended.iso \
        ./tmp

shout "Cleanup"

shout "Booting VM to start install"

VBoxManage -v &> /dev/null || { echo "ERROR: VBoxManage not in path!"; exit 1; }
VBoxManage createvm --name "${VM}" --register
VBoxManage modifyvm "${VM}" --ostype Ubuntu_64 --memory 8192 --vram 64 --rtcuseutc on --ioapic on \
           --clipboard bidirectional --cpus 2 --firmware efi64

# ISO image to boot
VBoxManage storagectl "${VM}" --name ide0 --add ide
VBoxManage storageattach "${VM}" --storagectl ide0 --device 0 --port 0 --type dvddrive --medium ./${VM}-unattended.iso

# Storage to be used as primary disk
VBoxManage storagectl "${VM}" --name nvme0 --add pcie --controller NVMe --portcount 1
VBoxManage createhd --filename "${VM_HDD_FILE}" --size 40960
VBoxManage storageattach "${VM}" --storagectl nvme0 --port 0 --type hdd --medium "${VM_HDD_FILE}"

# Other stuff
VBoxManage modifyvm "${VM}" --nic1 nat
VBoxManage startvm --type=gui "${VM}"

# Wait until we're done with it
wait_vm_quit ${VM}

echo -n "Remove the ${VM} VM?"
read answer

if [[ "$answer" != "${answer#[Yy]}" ]]; then
    VBoxManage unregistervm "$VM" --delete
fi