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update gpg / file verification for Gentoo

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Gentoo updated the layout and files for vaidating stages
At least we can validate cryptographically and infer valid checksum now.

https://www.gentoo.org/news/2022/02/17/changed-signatures.html

Change-Id: I708b44419ae53dec2c19a2210ef427dcd2eb6002
Signed-off-by: Matthew Thode <mthode@mthode.org>
This commit is contained in:
Matthew Thode 2022-02-18 14:17:00 -06:00
parent f44644f20f
commit 691eb03be8
No known key found for this signature in database
GPG Key ID: 64A37BEAAE19A4E8
1 changed files with 3 additions and 10 deletions
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13
diskimage_builder/elements/gentoo/root.d/10-gentoo-image
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@ -74,7 +74,7 @@ fi
DIB_CLOUD_SOURCE=${DIB_CLOUD_SOURCE:-"http://distfiles.gentoo.org/releases/${ARCH_PATH}/autobuilds/latest-stage3-${ARCH_PATH}${SIGNED_SOURCE_SUFFIX}.txt"}
BASE_IMAGE_FILE=${BASE_IMAGE_FILE:-"http://distfiles.gentoo.org/releases/${ARCH_PATH}/autobuilds/$(curl "${DIB_CLOUD_SOURCE}" -s -f | tail -n 1 | cut -d\ -f 1)"}
BASE_IMAGE_FILE_SUFFIX=${BASE_IMAGE_FILE_SUFFIX:-"$(basename "${BASE_IMAGE_FILE}" | cut -d. -f 2,3)"}
SIGNATURE_FILE="${SIGNATURE_FILE:-${BASE_IMAGE_FILE}.DIGESTS.asc}"
SIGNATURE_FILE="${SIGNATURE_FILE:-${BASE_IMAGE_FILE}.asc}"
CACHED_FILE="${DIB_IMAGE_CACHE}/${FILENAME_BASE}.${BASE_IMAGE_FILE_SUFFIX}"
CACHED_SIGNATURE_FILE="${DIB_IMAGE_CACHE}/${FILENAME_BASE}.asc"
@ -91,18 +91,11 @@ else
# https://dev.gentoo.org/~dolsen/releases/keyrings/gentoo-keys-*.tar.xz
# http://distfiles.gentoo.org/distfiles/gentoo-keys-*.tar.xz
# check the sig file
if ! gpgv --keyring "${TMP_HOOKS_PATH}"/extra-data.d/gentoo-releng.gpg "${CACHED_SIGNATURE_FILE}"; then
if ! gpgv --keyring "${TMP_HOOKS_PATH}"/extra-data.d/gentoo-releng.gpg "${CACHED_SIGNATURE_FILE}" "${CACHED_FILE}"; then
echo 'invalid signature file'
exit 1
fi
echo 'valid key used'
CACHED_SHA512SUM=$(grep -A1 -e 'SHA512' "${CACHED_SIGNATURE_FILE}" | grep -e "${BASE_IMAGE_FILE_SUFFIX}$" | cut -d\ -f 1)
ACTUAL_SHA512SUM=$(sha512sum "${CACHED_FILE}" | cut -d\ -f 1)
if [[ "${ACTUAL_SHA512SUM}" != "${CACHED_SHA512SUM}" ]]; then
echo "invalid checksum on downloaded tarball: ${CACHED_FILE}"
exit 1
fi
echo 'valid checksum'
echo 'base image file verified'
popd
fi