117 lines
4.8 KiB
Bash
Executable File
117 lines
4.8 KiB
Bash
Executable File
#!/bin/bash
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# Copyright 2016 Matthew Thode
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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if [ "${DIB_DEBUG_TRACE:-0}" -gt 0 ]; then
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set -x
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fi
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set -eu
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set -o pipefail
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[ -n "${ARCH}" ]
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[ -n "${TARGET_ROOT}" ]
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if [ 'amd64' = "${ARCH}" ] ; then
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ARCH='x86_64'
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fi
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if ! [ 'x86_64' = "${ARCH}" ] ; then
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echo "Only x86_64 images are currently available but ARCH is set to ${ARCH}."
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exit 1
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fi
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# valid gentoo profiles are as follows
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# default/linux/amd64/13.0
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# default/linux/amd64/13.0/no-multilib
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# hardened/linux/amd64
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# hardened/linux/amd64/no-multilib
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GENTOO_PROFILE=${GENTOO_PROFILE:-'default/linux/amd64/17.1'}
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if [[ "${GENTOO_PROFILE}" == "default/linux/amd64/17.1" ]]; then
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FILENAME_BASE='gentoo-stage3'
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SIGNED_SOURCE_SUFFIX=''
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elif [[ "${GENTOO_PROFILE}" == "default/linux/amd64/17.1/no-multilib" ]]; then
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FILENAME_BASE='gentoo-stage3-nomultilib'
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SIGNED_SOURCE_SUFFIX='-nomultilib'
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elif [[ "${GENTOO_PROFILE}" == "default/linux/amd64/17.1/hardened" ]]; then
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FILENAME_BASE='gentoo-stage3-hardened'
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SIGNED_SOURCE_SUFFIX='-hardened'
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elif [[ "${GENTOO_PROFILE}" == "default/linux/amd64/17.1/no-multilib/hardened" ]]; then
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FILENAME_BASE='gentoo-stage3-hardened-nomultilib'
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SIGNED_SOURCE_SUFFIX='-hardened+nomultilib'
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elif [[ "${GENTOO_PROFILE}" == "default/linux/amd64/17.0/musl/hardened" ]]; then
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FILENAME_BASE='gentoo-stage3-hardened-musl'
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SIGNED_SOURCE_SUFFIX='-musl-hardened'
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elif [[ "${GENTOO_PROFILE}" == "default/linux/amd64/17.1/systemd" ]]; then
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FILENAME_BASE='gentoo-stage3-systemd'
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SIGNED_SOURCE_SUFFIX='-systemd'
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else
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echo 'invalid profile, please select from the following profiles'
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echo 'default/linux/amd64/17.1'
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echo 'default/linux/amd64/17.1/no-multilib'
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echo 'default/linux/amd64/17.1/hardened'
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echo 'default/linux/amd64/17.1/no-multilib/hardened'
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echo 'default/linux/amd64/17.1/systemd'
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exit 1
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fi
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DIB_CLOUD_SOURCE=${DIB_CLOUD_SOURCE:-"http://distfiles.gentoo.org/releases/amd64/autobuilds/latest-stage3-amd64${SIGNED_SOURCE_SUFFIX}.txt"}
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BASE_IMAGE_FILE=${BASE_IMAGE_FILE:-"http://distfiles.gentoo.org/releases/amd64/autobuilds/$(curl ${DIB_CLOUD_SOURCE} -s -f | tail -n 1 | cut -d\ -f 1)"}
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BASE_IMAGE_FILE_SUFFIX=${BASE_IMAGE_FILE_SUFFIX:-"$(basename ${BASE_IMAGE_FILE} | cut -d. -f 2,3)"}
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SIGNATURE_FILE="${SIGNATURE_FILE:-${BASE_IMAGE_FILE}.DIGESTS.asc}"
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CACHED_FILE="${DIB_IMAGE_CACHE}/${FILENAME_BASE}.${BASE_IMAGE_FILE_SUFFIX}"
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CACHED_SIGNATURE_FILE="${DIB_IMAGE_CACHE}/${FILENAME_BASE}.asc"
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if [ -n "${DIB_OFFLINE}" -a -f "${CACHED_FILE}" ] ; then
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echo "Not checking freshness of cached ${CACHED_FILE}"
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else
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echo 'Fetching Base Image'
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"${TMP_HOOKS_PATH}"/bin/cache-url "${SIGNATURE_FILE}" "${CACHED_SIGNATURE_FILE}"
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"${TMP_HOOKS_PATH}"/bin/cache-url "${BASE_IMAGE_FILE}" "${CACHED_FILE}"
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pushd "${DIB_IMAGE_CACHE}"
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# import the key
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# this key can be verified at one of the following places
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# https://wiki.gentoo.org/wiki/Project:RelEng#Keys
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# https://dev.gentoo.org/~dolsen/releases/keyrings/gentoo-keys-*.tar.xz
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# http://distfiles.gentoo.org/distfiles/gentoo-keys-*.tar.xz
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# check the sig file
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gpgv --keyring "${TMP_HOOKS_PATH}"/extra-data.d/gentoo-releng.gpg "${CACHED_SIGNATURE_FILE}"
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if [[ "${?}" != 0 ]]; then
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echo 'invalid signature file'
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exit 1
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fi
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echo 'valid key used'
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CACHED_SHA512SUM=$(grep -A1 -e 'SHA512' "${CACHED_SIGNATURE_FILE}" | grep -e "${BASE_IMAGE_FILE_SUFFIX}$" | cut -d\ -f 1)
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ACTUAL_SHA512SUM=$(sha512sum "${CACHED_FILE}" | cut -d\ -f 1)
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if [[ "${ACTUAL_SHA512SUM}" != "${CACHED_SHA512SUM}" ]]; then
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echo "invalid checksum on downloaded tarball: ${CACHED_FILE}"
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exit 1
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fi
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echo 'valid checksum'
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popd
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fi
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# Extract the base image (use --numeric-owner to avoid UID/GID mismatch between
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# image tarball and host OS)
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sudo tar -C "${TARGET_ROOT}" --numeric-owner --xattrs -xf "${CACHED_FILE}"
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# Put in a dummy /etc/resolv.conf over the temporary one we used
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# to bootstrap. systemd has a bug/feature [1] that it will assume
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# you want systemd-networkd as the network manager and create a
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# broken symlink to /run/... if the base image doesn't have one.
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# This broken link confuses things like dhclient.
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# [1] https://bugzilla.redhat.com/show_bug.cgi?id=1197204
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echo -e "# This file intentionally left blank\n" | sudo tee "${TARGET_ROOT}"/etc/resolv.conf
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