download HashiCorp products (macOS)

README.md

dl.sh

Shell script for downloading HashiCorp binaries.

Requires jq (brew install jq) and gpg (brew cask install gpg-suite).

example

I structure all my binaries as ~/devel/HashiCorp/binaries/<product>-<version>/<product> and adjust paths as needed based on the project I'm working on.

Version to download is optional; defaults to latest.

[:~] $ ~/devel/HashiCorp/binaries/dl.sh consul
current version: 1.6.2
retrieving consul 1.6.2
:: binary
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 38.3M  100 38.3M    0     0  11.6M      0  0:00:03  0:00:03 --:--:-- 11.6M
:: SHA256SUMS
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  1148  100  1148    0     0  14316      0 --:--:-- --:--:-- --:--:-- 14350
:: SHA256SUMS signature
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   310  100   310    0     0   3734      0 --:--:-- --:--:-- --:--:--  3780
verifying GPG signature
gpg: Signature made Wed Nov 13 16:32:50 2019 EST
gpg:                using RSA key 91A6E7F85D05C65630BEF18951852D87348FFC4C
gpg: Good signature from "HashiCorp Security <security@hashicorp.com>" [unknown]
gpg: WARNING: This key is not certified with a trusted signature!
gpg:          There is no indication that the signature belongs to the owner.
Primary key fingerprint: 91A6 E7F8 5D05 C656 30BE  F189 5185 2D87 348F FC4C
consul_1.6.2_darwin_amd64.zip: OK
Archive:  consul_1.6.2_darwin_amd64.zip
  inflating: consul
=> /Users/blalor/devel/HashiCorp/binaries/consul-1.6.0/consul

dl.sh

#!/bin/bash
set -e -u -o pipefail

basedir=$( cd "$( dirname "${0}" )" && /bin/pwd -P )

if [ $# -lt 1 ]; then
    echo "usage: ${0} <product> [<version>]"
    exit 1
fi

product="${1}"
version="${2:-latest}"

tmpdir="$( mktemp -d )"

function cleanup() {
    EXIT=$?

    cd /
    rm -rf "${tmpdir}"

    exit ${EXIT}
}

trap cleanup EXIT

cd "${tmpdir}"

curl=( curl --retry 3 --retry-delay 5 -fSLO )

if [ "${version}" = "latest" ]; then
    if ! version=$( curl -sfSL "https://checkpoint-api.hashicorp.com/v1/check/${product}" | jq -r .current_version ); then
        ## filter out semver whose point version is not a number
        version="$(
            curl -sfSL "https://releases.hashicorp.com/${product}/index.json" | \
                jq -r '
                    [
                        .versions |
                        keys |
                        .[] |
                        split(".") |
                        [
                            .[] | try tonumber catch null
                        ] |
                        select(.[2])
                    ] |
                    sort |
                    .[-1] |
                    [ .[] | tostring ] |
                    join(".")
                '
            )"
    fi

    echo "current version: ${version}"
fi

bindir="${basedir}/${product}-${version}"
if [ -d "${bindir}" ]; then
    echo "${product} ${version} already exists"
    exit 1
fi

mkdir -p "${bindir}"

echo "retrieving ${product} ${version}"
basefn="${product}_${version}"
_U="https://releases.hashicorp.com/${product}/${version}/${basefn}"

echo ":: binary"
"${curl[@]}" "${_U}_darwin_amd64.zip"

echo ":: SHA256SUMS"
"${curl[@]}" "${_U}_SHA256SUMS"

echo ":: SHA256SUMS signature"
"${curl[@]}" "${_U}_SHA256SUMS.sig"

# if ! gpg --list-keys 91A6E7F85D05C65630BEF18951852D87348FFC4C >/dev/null; then

echo "verifying GPG signature"
gpg --verify "${basefn}_SHA256SUMS.sig" "${basefn}_SHA256SUMS"
grep -E '_darwin_amd64\.zip$' "${basefn}_SHA256SUMS" | shasum -c

unzip "${basefn}_darwin_amd64.zip"
mv "${product}" "${bindir}"

echo "=> ${bindir}/${product}"