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#!/bin/bash
# symbol prefixes:
# g_ -> global
# l_ - local variable
# f_ -> function
set -euo pipefail
GITIAN_CACHE_DIRNAME='.gitian-builder-cache'
GO_RELEASE='1.13.3'
GO_TARBALL="go${GO_RELEASE}.linux-amd64.tar.gz"
GO_TARBALL_URL="https://dl.google.com/go/${GO_TARBALL}"
# Defaults
DEFAULT_SIGN_COMMAND='gpg --detach-sign'
DEFAULT_TENDERMINT_SIGS=${TENDERMINT_SIGS:-'tendermint.sigs'}
DEFAULT_GITIAN_REPO='https://github.com/tendermint/gitian-builder'
DEFAULT_GBUILD_FLAGS=''
DEFAULT_SIGS_REPO='https://github.com/tendermint/tendermint.sigs'
# Overrides
SIGN_COMMAND=${SIGN_COMMAND:-${DEFAULT_SIGN_COMMAND}}
GITIAN_REPO=${GITIAN_REPO:-${DEFAULT_GITIAN_REPO}}
GBUILD_FLAGS=${GBUILD_FLAGS:-${DEFAULT_GBUILD_FLAGS}}
# Globals
g_workdir=''
g_gitian_cache=''
g_cached_gitian=''
g_cached_go_tarball=''
g_sign_identity=''
g_sigs_dir=''
g_flag_commit=''
f_help() {
cat >&2 <<EOF
Usage: $(basename $0) [-h] PLATFORM
Launch a gitian build from the current source directory for the given PLATFORM.
The following platforms are supported:
darwin
linux
windows
all
Options:
-h display this help and exit
-c clone the signatures repository and commit signatures;
ignored if sign identity is not supplied
-s IDENTITY sign build as IDENTITY
If a GPG identity is supplied via the -s flag, the build will be signed and verified.
The signature will be saved in '${DEFAULT_TENDERMINT_SIGS}/'. An alternative output directory
for signatures can be supplied via the environment variable \$TENDERMINT_SIGS.
The default signing command used to sign the build is '$DEFAULT_SIGN_COMMAND'.
An alternative signing command can be supplied via the environment
variable \$SIGN_COMMAND.
EOF
}
f_builddir() {
printf '%s' "${g_workdir}/gitian-build-$1"
}
f_prep_build() {
local l_platforms \
l_os \
l_builddir
l_platforms="$1"
if [ -n "${g_flag_commit}" -a ! -d "${g_sigs_dir}" ]; then
git clone ${DEFAULT_SIGS_REPO} "${g_sigs_dir}"
fi
for l_os in ${l_platforms}; do
l_builddir="$(f_builddir ${l_os})"
f_echo_stderr "Preparing build directory $(basename ${l_builddir}), restoring files from cache"
cp -ar "${g_cached_gitian}" "${l_builddir}" >&2
mkdir "${l_builddir}/inputs/"
cp -v "${g_cached_go_tarball}" "${l_builddir}/inputs/"
done
}
f_build() {
local l_descriptor
l_descriptor=$1
bin/gbuild --commit tendermint="$g_commit" ${GBUILD_FLAGS} "$l_descriptor"
libexec/stop-target || f_echo_stderr "warning: couldn't stop target"
}
f_sign_verify() {
local l_descriptor
l_descriptor=$1
bin/gsign -p "${SIGN_COMMAND}" -s "${g_sign_identity}" --destination="${g_sigs_dir}" --release=${g_release} ${l_descriptor}
bin/gverify --destination="${g_sigs_dir}" --release="${g_release}" ${l_descriptor}
}
f_commit_sig() {
local l_release_name
l_release_name=$1
pushd "${g_sigs_dir}"
git add . || echo "git add failed" >&2
git commit -m "Add ${l_release_name} reproducible build" || echo "git commit failed" >&2
popd
}
f_prep_docker_image() {
pushd $1
bin/make-base-vm --docker --suite bionic --arch amd64
popd
}
f_ensure_cache() {
g_gitian_cache="${g_workdir}/${GITIAN_CACHE_DIRNAME}"
[ -d "${g_gitian_cache}" ] || mkdir "${g_gitian_cache}"
g_cached_go_tarball="${g_gitian_cache}/${GO_TARBALL}"
if [ ! -f "${g_cached_go_tarball}" ]; then
f_echo_stderr "${g_cached_go_tarball}: cache miss, caching..."
curl -L "${GO_TARBALL_URL}" --output "${g_cached_go_tarball}"
fi
g_cached_gitian="${g_gitian_cache}/gitian-builder"
if [ ! -d "${g_cached_gitian}" ]; then
f_echo_stderr "${g_cached_gitian}: cache miss, caching..."
git clone ${GITIAN_REPO} "${g_cached_gitian}"
fi
}
f_demangle_platforms() {
case "${1}" in
all)
printf '%s' 'darwin linux windows' ;;
linux|darwin|windows)
printf '%s' "${1}" ;;
*)
echo "invalid platform -- ${1}"
exit 1
esac
}
f_echo_stderr() {
echo $@ >&2
}
while getopts ":cs:h" opt; do
case "${opt}" in
h) f_help ; exit 0 ;;
c) g_flag_commit=y ;;
s) g_sign_identity="${OPTARG}" ;;
esac
done
shift "$((OPTIND-1))"
g_platforms=$(f_demangle_platforms "${1}")
g_workdir="$(pwd)"
g_commit="$(git rev-parse HEAD)"
g_sigs_dir=${TENDERMINT_SIGS:-"${g_workdir}/${DEFAULT_TENDERMINT_SIGS}"}
f_ensure_cache
f_prep_docker_image "${g_cached_gitian}"
f_prep_build "${g_platforms}"
export USE_DOCKER=1
for g_os in ${g_platforms}; do
g_release="$(git describe --tags --abbrev=9 | sed 's/^v//')-${g_os}"
g_descriptor="${g_workdir}/scripts/gitian-descriptors/gitian-${g_os}.yml"
[ -f ${g_descriptor} ]
g_builddir="$(f_builddir ${g_os})"
pushd "${g_builddir}"
f_build "${g_descriptor}"
if [ -n "${g_sign_identity}" ]; then
f_sign_verify "${g_descriptor}"
fi
popd
if [ -n "${g_sign_identity}" -a -n "${g_flag_commit}" ]; then
[ -d "${g_sigs_dir}/.git/" ] && f_commit_sig ${g_release} || f_echo_stderr "couldn't commit, ${g_sigs_dir} is not a git clone"
fi
done
exit 0