271 lines
7.7 KiB
Bash
271 lines
7.7 KiB
Bash
#!/usr/bin/env /bin/bash
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declare -r BASEDIR="`pwd`"
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declare -r mode="full" # one of 'full'|'unattend'
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declare -r ISO_BASEDIR="/mnt/machines/iso"
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declare -r CONFIG_DIR="${BASEDIR}/configs"
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declare -r UNATTEND_XML="${2:-"${CONFIG_DIR}/autounattend-builder-amd64-20260527.xml"}"
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#declare -r WINDOWS_ISO="${ISO_BASEDIR}/nano11-25H2-Pro-Eng-Arm64-20260513.iso"
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#declare -r WINDOWS_ISO="${ISO_BASEDIR}/tiny11-25H2-Pro-Eng-Arm64-20260514.iso"
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#declare -r WINDOWS_ISO="${ISO_BASEDIR}/nano11-25H2-English-Pro-2026-03-15.iso"
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#declare -r WINDOWS_ISO="${ISO_BASEDIR}/Tiny11-25H2-English-Pro-2026-05-20.iso"
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#declare -r WINDOWS_ISO="${ISO_BASEDIR}/Tiny11Core-25H2-English-Pro-2026-05-20.iso"
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#declare -r WINDOWS_ISO="${ISO_BASEDIR}/nano11-25H2-English-Pro-2026-05-20.iso"
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#declare -r WINDOWS_ISO="${ISO_BASEDIR}/nano11-base-25H2-Pro-Eng-amd64-20260526.iso"
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declare -r WINDOWS_ISO="${ISO_BASEDIR}/nano11-base-25H2-Pro-Eng-arm64-20260526.iso"
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declare -r VIRTIO_ISO="${ISO_BASEDIR}/virtio-win-0.1.285.iso"
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#declare -r VIRTIO_ISO="${BASEDIR}/virtio-win-0.1.285.iso"
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######################################################################################
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#
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#
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function detect_iso_arch {
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local iso_file="${1}"
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local fallback_arch="${2}"
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case "${iso_file@L}" in
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*-amd64-*|*-x64-*)
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echo "amd64" ;;
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*-arm64-*|*-aarch64-*)
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echo "arm64" ;;
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*) # Unknown use host arch as fallback
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echo "NOTICE: Cannot detect architecture from ISO name, using fallback" >&2
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echo "${fallback_arch}" ;;
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esac
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}
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function detect_host_arch {
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case "$(uname -m | tr '[:upper:]' '[:lower:]')" in
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"x86_64") echo "amd64" ;;
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"aarch64") echo "arm64" ;;
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*) return 1 ;;
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esac
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}
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######################################################################################
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# Detect host and guest architecture
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declare -r HOST_ARCH="$(detect_host_arch)"
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[[ -n "${HOST_ARCH}" ]] || {
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echo "Failed to detect host arch" >&2;
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exit 1;
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}
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declare -r TARGET_ARCH="$(detect_iso_arch "${WINDOWS_ISO}")"
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[[ -n "${TARGET_ARCH}" ]] || {
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echo "Failed to detect target arch" >&2;
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exit 1;
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}
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case "${mode}" in
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"full")
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echo "Generating full ${TARGET_ARCH} installation ISO image..." >&2
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declare -r DEFAULT_OUTPUT_FILE="install-${TARGET_ARCH}-$(date +%Y%m%d-%H%M00).iso"
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;;
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"unattend")
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echo "Generating unattended ${TARGET_ARCH} ISO image..." >&2
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declare -r DEFAULT_OUTPUT_FILE="unattend-${TARGET_ARCH}-$(date +%Y%m%d-%H%M00).iso"
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;;
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*)
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echo "Invalid mode '${mode}' expected either 'full'|'unattend'" >&2
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exit 1
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;;
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esac
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#
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# Output file
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#
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declare -r OUTPUT_FILE="${1:-${DEFAULT_OUTPUT_FILE}}"
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#
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# Validate input XML
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#
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xmllint -noout "${UNATTEND_XML}" || {
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echo "$(basename "${UNATTEND_XML}") contains invalid XML, aborting" >&2
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exit 1
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}
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mkdir -p "${BASEDIR}/build" || exit $?
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mkdir -p "${BASEDIR}/output" || exit $?
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# Convert architecture for virtio installation media
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case "${TARGET_ARCH}" in
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"arm64")
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VIRTIO_ARCH="${TARGET_ARCH@U}" ;; # Virtio ISO uses "ARM64"
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*)
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VIRTIO_ARCH="${TARGET_ARCH}" ;; # Virtio ISO uses "amd64"
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esac
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#
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# Generate builder script
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#
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cat -> "${BASEDIR}/build/genimage-${TARGET_ARCH}.sh" <<-EOF
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#!/usr/bin/env /bin/ash
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#
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# Required packages
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#
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echo "Installing required packages..." >&2
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apk update || exit \$?
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apk add xorriso 7zip || exit \$?
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#
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# Prepare directories / mountpoints
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#
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echo "Preparing build directory and mountpoints..." >&2
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mkdir -p /tmp/base || exit \$?
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mkdir -p /tmp/virtio || exit \$?
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mkdir -p /tmp/build || exit \$?
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#
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# Mounting (if possible) / unpacking of ISO images
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#
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if [[ "x${mode}" == "xfull" ]]; then
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echo "Attempting to mount windows ISO image..." >&2
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mount -t udf -o loop,ro /input/windows.iso /tmp/base/ 2>/dev/null || {
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echo "Unpacking windows ISO image (fallback)..." >&2
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7z x -bb0 -o/tmp/base/ /input/windows.iso || exit \$?
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}
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else
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echo "Building unattend ISO image, skipping windows mount" >&2
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fi
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echo "Attempting to mount virtio-win ISO image..." >&2
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mount -o loop,ro /input/virtio.iso /tmp/virtio/ 2>/dev/null || {
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echo "Unpacking virtio-win ISO image (fallback)..." >&2
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7z x -bb0 -o/tmp/virtio/ /input/virtio.iso || exit \$?
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}
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#
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# Autounattend XML configuration file (replaces any existing one)
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#
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echo "Copying autounattend.xml..." >&2
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sed -e 's|processorArchitecture="[^"]\+"|processorArchitecture="${TARGET_ARCH}"|' \
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< /input/autounattend.xml \
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> /tmp/build/autounattend.xml || exit \$?
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#
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# Required drivers for installation (into "$WinPEDriver$")
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#
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echo "Creating \\\$WinPEDriver\\\$..." >&2
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mkdir -p "/tmp/build/\\\$WinPEDriver\\\$" || exit \$?
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for x in NetKVM viostor vioscsi; do
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cp -vfR /tmp/virtio/\${x}/w11/${VIRTIO_ARCH} "/tmp/build/\\\$WinPEDriver\\\$/\${x}" || exit \$?
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done
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#
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# OEM files (drivers, packages, etc.)
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#
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echo "Copying OEM files..." >&2
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mkdir -p \
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"/tmp/build/\\\$OEM\\\$/\\\$\\\$" \
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"/tmp/build/\\\$OEM\\\$/\\\$1" \
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|| exit \$?
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# Viofs files for use in the final OS (virtiofsd)
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mkdir -p "/tmp/build/\\\$OEM\\\$/\\\$1/drivers" || exit \$?
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for x in /tmp/virtio/viofs/w11/${VIRTIO_ARCH}; do
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drvname="\$(echo "\${x}" | cut -d'/' -f4)" || exit \$?
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cp -vfR "\${x}" "/tmp/build/\\\$OEM\\\$/\\\$1/drivers/\${drvname}" || exit \$?
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done
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#
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# Virtio drivers for auto-installation
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#
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echo "Copying virtio drivers for automatic installation..." >&2
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mkdir -p "/tmp/build/drivers" || exit \$?
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for x in /tmp/virtio/*/w11/${VIRTIO_ARCH}; do
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drvname="\$(echo "\${x}" | cut -d'/' -f4)" || exit \$?
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cp -vfR "\${x}" "/tmp/build/drivers/\${drvname}" || exit \$?
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done
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#
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# ISO image generation
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#
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if [[ "x${mode}" == "xfull" ]]; then
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echo "Generating ISO boot image..." >&2
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mkisofs \\
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-quiet \\
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-b boot/etfsboot.com \\
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-no-emul-boot \\
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-boot-load-size 8 \\
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-iso-level 3 -J -l -D -N -U -joliet-long -relaxed-filenames -rational-rock \\
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-eltorito-alt-boot -e efi/microsoft/boot/efisys_noprompt.bin -no-emul-boot \\
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-m "/tmp/base/autounattend.xml" \\
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-V "Nano11-Builder" \\
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-o "/output/$(basename "${OUTPUT_FILE}")" \\
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"/tmp/base/" "/tmp/build/" || exit \$?
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else
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echo "Generating ISO unattend image..." >&2
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mkisofs \\
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-quiet \\
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-iso-level 3 -J -l -D -N -U -joliet-long -relaxed-filenames -rational-rock \\
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-V "Nano11-Builder-Unattend" \\
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-o "/output/$(basename "${OUTPUT_FILE}")" \\
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"/tmp/build/" || exit \$?
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fi
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# genisoimage \\
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# -quiet \\
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# -b boot/etfsboot.com \\
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# -no-emul-boot \\
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# -boot-load-seg 1984 \\
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# -boot-load-size 8 \\
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# -iso-level 3 -J -l -D -N -U -joliet-long -allow-limited-size -relaxed-filenames -rock \\
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# -eltorito-alt-boot -e efi/microsoft/boot/efisys_noprompt.bin \\
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# -m "/tmp/base/autounattend.xml" \\
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# -V "Nano11-Builder" \\
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# -o "/build/output.iso" \\
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# "/tmp/base/" "/tmp/build/" || exit \$?
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#
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#
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#
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echo "Cleaning up..." >&2
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umount /tmp/base/ 2>/dev/null
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umount /tmp/virtio/ 2>/dev/null
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EOF
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chmod 0755 "${BASEDIR}/build/genimage-${TARGET_ARCH}.sh" || exit $?
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declare -r CONTAINER_IMAGE="alpine:3.23"
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declare -r CONTAINER_ARGS=(
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"-it --rm --name isobuilder-${TARGET_ARCH}"
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"-v ${VIRTIO_ISO}:/input/virtio.iso:ro,Z"
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"-v ${WINDOWS_ISO}:/input/windows.iso:ro,Z"
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"-v ${UNATTEND_XML}:/input/autounattend.xml:ro,Z"
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"-v ${BASEDIR}/build:/build:ro,Z"
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"-v ${BASEDIR}/output:/output:rw,Z"
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"--privileged --network host"
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)
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#
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# Run generation script in alpine 3.23 container
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#
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if type -p docker &>/dev/null; then
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echo "Running isobuilder in docker container" >&2
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docker run ${CONTAINER_ARGS[@]} ${CONTAINER_IMAGE} \
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/build/genimage-${TARGET_ARCH}.sh || exit $?
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elif type -p podman &>/dev/null; then
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echo "Running isobuilder in podman container" >&2
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podman run ${CONTAINER_ARGS[@]} ${CONTAINER_IMAGE} \
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/build/genimage-${TARGET_ARCH}.sh || exit $?
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else
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echo "Failed to start build container: no runtime available" >&2
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exit 1
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fi
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(cd "${BASEDIR}/output" && ls -sh "$(basename "${OUTPUT_FILE}")") || exit $?
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