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#!/bin/bash
# Copyright 2018 The gVisor Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# We need to be sure that only a repo path is printed on stdout.
exec 50<&1
exec 1<&2
echo_stdout() {
echo "$@" >&50
}
# Parse arguments. We require more than two arguments, which are the private
# keyring, the e-mail associated with the signer, and the list of packages.
if [ "$#" -le 3 ]; then
echo "usage: $0 <private-key> <signer-email> <root> <packages...>"
exit 1
fi
declare -r private_key=$(readlink -e "$1"); shift
declare -r signer="$1"; shift
declare -r root="$1"; shift
# Ensure that we have the correct packages installed.
function apt_install() {
while true; do
sudo apt-get update &&
sudo apt-get install -y "$@" &&
true
result="${?}"
case $result in
0)
break
;;
100)
# 100 is the error code that apt-get returns.
;;
*)
exit $result
;;
esac
done
}
dpkg-sig --help >/dev/null || apt_install dpkg-sig
apt-ftparchive --help >/dev/null || apt_install apt-utils
xz --help >/dev/null || apt_install xz-utils
# Verbose from this point.
set -xeo pipefail
# Create a temporary working directory. We don't remove this, as we ultimately
# print this result and allow the caller to copy wherever they would like.
declare -r tmpdir=$(mktemp -d /tmp/repoXXXXXX)
# Create a temporary keyring, and ensure it is cleaned up.
declare -r keyring=$(mktemp /tmp/keyringXXXXXX.gpg)
cleanup() {
rm -f "${keyring}"
}
trap cleanup EXIT
gpg --no-default-keyring --keyring "${keyring}" --import "${private_key}"
# Copy the packages into the root.
for pkg in "$@"; do
name=$(basename "${pkg}" .deb)
name=$(basename "${name}" .changes)
arch=${name##*_}
if [[ "${name}" == "${arch}" ]]; then
continue # Not a regular package.
fi
if [[ "${pkg}" =~ ^.*\.deb$ ]]; then
# Extract from the debian file.
version=$(dpkg --info "${pkg}" | grep -E 'Version:' | cut -d':' -f2)
elif [[ "${pkg}" =~ ^.*\.changes$ ]]; then
# Extract from the changes file.
version=$(grep -E 'Version:' "${pkg}" | cut -d':' -f2)
else
# Unsupported file type.
echo "Unknown file type: ${pkg}"
exit 1
fi
version=${version// /} # Trim whitespace.
mkdir -p "${root}"/pool/"${version}"/binary-"${arch}"
cp -a "${pkg}" "${root}"/pool/"${version}"/binary-"${arch}"
done
# Ensure all permissions are correct.
find "${root}"/pool -type f -exec chmod 0644 {} \;
# Sign all packages.
for file in "${root}"/pool/*/binary-*/*.deb; do
dpkg-sig -g "--no-default-keyring --keyring ${keyring}" --sign builder "${file}"
done
# Build the package list.
declare arches=()
for dir in "${root}"/pool/*/binary-*; do
name=$(basename "${dir}")
arch=${name##binary-}
arches+=("${arch}")
repo_packages="${tmpdir}"/main/"${name}"
mkdir -p "${repo_packages}"
(cd "${root}" && apt-ftparchive --arch "${arch}" packages pool > "${repo_packages}"/Packages)
(cd "${repo_packages}" && cat Packages | gzip > Packages.gz)
(cd "${repo_packages}" && cat Packages | xz > Packages.xz)
done
# Build the release list.
cat > "${tmpdir}"/apt.conf <<EOF
APT {
FTPArchive {
Release {
Architectures "${arches[@]}";
Components "main";
};
};
};
EOF
(cd "${tmpdir}" && apt-ftparchive -c=apt.conf release . > Release)
rm "${tmpdir}"/apt.conf
# Sign the release.
declare -r digest_opts=("--digest-algo" "SHA512" "--cert-digest-algo" "SHA512")
(cd "${tmpdir}" && gpg --no-default-keyring --keyring "${keyring}" --clearsign "${digest_opts[@]}" -o InRelease Release)
(cd "${tmpdir}" && gpg --no-default-keyring --keyring "${keyring}" -abs "${digest_opts[@]}" -o Release.gpg Release)
# Show the results.
echo_stdout "${tmpdir}"
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