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#!/usr/bin/env bash |
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# letsencrypt.sh by lukas2511 |
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# Source: https://github.com/lukas2511/letsencrypt.sh |
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set -e |
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set -u |
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set -o pipefail |
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umask 077 # paranoid umask, we're creating private keys |
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# Get the directory in which this script is stored |
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SCRIPTDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )" |
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BASEDIR="${SCRIPTDIR}" |
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# Check for script dependencies |
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check_dependencies() { |
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# just execute some dummy and/or version commands to see if required tools exist and are actually usable |
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openssl version > /dev/null 2>&1 || _exiterr "This script requires an openssl binary." |
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_sed "" < /dev/null > /dev/null 2>&1 || _exiterr "This script requires sed with support for extended (modern) regular expressions." |
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grep -V > /dev/null 2>&1 || _exiterr "This script requires grep." |
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mktemp -u -t XXXXXX > /dev/null 2>&1 || _exiterr "This script requires mktemp." |
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# curl returns with an error code in some ancient versions so we have to catch that |
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set +e |
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curl -V > /dev/null 2>&1 |
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set -e |
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retcode="$?" |
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if [[ ! "${retcode}" = "0" ]] && [[ ! "${retcode}" = "2" ]]; then |
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_exiterr "This script requires curl." |
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fi |
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} |
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# Setup default config values, search for and load configuration files |
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load_config() { |
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# Check for config in various locations |
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if [[ -z "${CONFIG:-}" ]]; then |
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for check_config in "/etc/letsencrypt.sh" "/usr/local/etc/letsencrypt.sh" "${PWD}" "${SCRIPTDIR}"; do |
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if [[ -e "${check_config}/config.sh" ]]; then |
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BASEDIR="${check_config}" |
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CONFIG="${check_config}/config.sh" |
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break |
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fi |
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done |
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fi |
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# Default values |
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CA="https://acme-v01.api.letsencrypt.org/directory" |
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LICENSE="https://letsencrypt.org/documents/LE-SA-v1.0.1-July-27-2015.pdf" |
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CHALLENGETYPE="http-01" |
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CONFIG_D= |
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HOOK= |
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RENEW_DAYS="30" |
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PRIVATE_KEY= |
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KEYSIZE="4096" |
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WELLKNOWN= |
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PRIVATE_KEY_RENEW="no" |
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KEY_ALGO=rsa |
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OPENSSL_CNF="$(openssl version -d | cut -d\" -f2)/openssl.cnf" |
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CONTACT_EMAIL= |
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LOCKFILE= |
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if [[ -z "${CONFIG:-}" ]]; then |
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echo "#" >&2 |
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echo "# !! WARNING !! No main config file found, using default config!" >&2 |
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echo "#" >&2 |
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elif [[ -e "${CONFIG}" ]]; then |
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echo "# INFO: Using main config file ${CONFIG}" |
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BASEDIR="$(dirname "${CONFIG}")" |
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# shellcheck disable=SC1090 |
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. "${CONFIG}" |
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else |
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_exiterr "Specified config file doesn't exist." |
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fi |
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if [[ -n "${CONFIG_D}" ]]; then |
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if [[ ! -d "${CONFIG_D}" ]]; then |
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_exiterr "The path ${CONFIG_D} specified for CONFIG_D does not point to a directory." >&2 |
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fi |
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for check_config_d in ${CONFIG_D}/*.sh; do |
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if [[ ! -e "${check_config_d}" ]]; then |
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echo "# !! WARNING !! Extra configuration directory ${CONFIG_D} exists, but no configuration found in it." >&2 |
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break |
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elif [[ -f "${check_config_d}" ]] && [[ -r "${check_config_d}" ]]; then |
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echo "# INFO: Using additional config file ${check_config_d}" |
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. ${check_config_d} |
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else |
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_exiterr "Specified additional config ${check_config_d} is not readable or not a file at all." >&2 |
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fi |
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done |
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fi |
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# Remove slash from end of BASEDIR. Mostly for cleaner outputs, doesn't change functionality. |
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BASEDIR="${BASEDIR%%/}" |
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# Check BASEDIR and set default variables |
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[[ -d "${BASEDIR}" ]] || _exiterr "BASEDIR does not exist: ${BASEDIR}" |
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[[ -z "${PRIVATE_KEY}" ]] && PRIVATE_KEY="${BASEDIR}/private_key.pem" |
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[[ -z "${WELLKNOWN}" ]] && WELLKNOWN="${BASEDIR}/.acme-challenges" |
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[[ -z "${LOCKFILE}" ]] && LOCKFILE="${BASEDIR}/lock" |
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[[ -n "${PARAM_HOOK:-}" ]] && HOOK="${PARAM_HOOK}" |
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[[ -n "${PARAM_CHALLENGETYPE:-}" ]] && CHALLENGETYPE="${PARAM_CHALLENGETYPE}" |
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[[ -n "${PARAM_KEY_ALGO:-}" ]] && KEY_ALGO="${PARAM_KEY_ALGO}" |
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[[ "${CHALLENGETYPE}" =~ (http-01|dns-01) ]] || _exiterr "Unknown challenge type ${CHALLENGETYPE}... can not continue." |
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if [[ "${CHALLENGETYPE}" = "dns-01" ]] && [[ -z "${HOOK}" ]]; then |
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_exiterr "Challenge type dns-01 needs a hook script for deployment... can not continue." |
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fi |
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[[ "${KEY_ALGO}" =~ ^(rsa|prime256v1|secp384r1)$ ]] || _exiterr "Unknown public key algorithm ${KEY_ALGO}... can not continue." |
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} |
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# Initialize system |
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init_system() { |
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load_config |
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# Lockfile handling (prevents concurrent access) |
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LOCKDIR="$(dirname "${LOCKFILE}")" |
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[[ -w "${LOCKDIR}" ]] || _exiterr "Directory ${LOCKDIR} for LOCKFILE ${LOCKFILE} is not writable, aborting." |
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( set -C; date > "${LOCKFILE}" ) 2>/dev/null || _exiterr "Lock file '${LOCKFILE}' present, aborting." |
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remove_lock() { rm -f "${LOCKFILE}"; } |
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trap 'remove_lock' EXIT |
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# Get CA URLs |
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CA_DIRECTORY="$(http_request get "${CA}")" |
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CA_NEW_CERT="$(printf "%s" "${CA_DIRECTORY}" | get_json_string_value new-cert)" && |
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CA_NEW_AUTHZ="$(printf "%s" "${CA_DIRECTORY}" | get_json_string_value new-authz)" && |
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CA_NEW_REG="$(printf "%s" "${CA_DIRECTORY}" | get_json_string_value new-reg)" && |
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# shellcheck disable=SC2015 |
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CA_REVOKE_CERT="$(printf "%s" "${CA_DIRECTORY}" | get_json_string_value revoke-cert)" || |
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_exiterr "Problem retrieving ACME/CA-URLs, check if your configured CA points to the directory entrypoint." |
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# Export some environment variables to be used in hook script |
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export WELLKNOWN BASEDIR CONFIG |
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# Checking for private key ... |
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register_new_key="no" |
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if [[ -n "${PARAM_PRIVATE_KEY:-}" ]]; then |
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# a private key was specified from the command line so use it for this run |
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echo "Using private key ${PARAM_PRIVATE_KEY} instead of account key" |
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PRIVATE_KEY="${PARAM_PRIVATE_KEY}" |
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else |
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# Check if private account key exists, if it doesn't exist yet generate a new one (rsa key) |
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if [[ ! -e "${PRIVATE_KEY}" ]]; then |
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echo "+ Generating account key..." |
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_openssl genrsa -out "${PRIVATE_KEY}" "${KEYSIZE}" |
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register_new_key="yes" |
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fi |
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fi |
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openssl rsa -in "${PRIVATE_KEY}" -check 2>/dev/null > /dev/null || _exiterr "Private key is not valid, can not continue." |
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# Get public components from private key and calculate thumbprint |
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pubExponent64="$(openssl rsa -in "${PRIVATE_KEY}" -noout -text | grep publicExponent | grep -oE "0x[a-f0-9]+" | cut -d'x' -f2 | hex2bin | urlbase64)" |
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pubMod64="$(openssl rsa -in "${PRIVATE_KEY}" -noout -modulus | cut -d'=' -f2 | hex2bin | urlbase64)" |
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thumbprint="$(printf '{"e":"%s","kty":"RSA","n":"%s"}' "${pubExponent64}" "${pubMod64}" | openssl sha -sha256 -binary | urlbase64)" |
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# If we generated a new private key in the step above we have to register it with the acme-server |
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if [[ "${register_new_key}" = "yes" ]]; then |
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echo "+ Registering account key with letsencrypt..." |
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[[ ! -z "${CA_NEW_REG}" ]] || _exiterr "Certificate authority doesn't allow registrations." |
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# If an email for the contact has been provided then adding it to the registration request |
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if [[ -n "${CONTACT_EMAIL}" ]]; then |
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signed_request "${CA_NEW_REG}" '{"resource": "new-reg", "contact":["mailto:'"${CONTACT_EMAIL}"'"], "agreement": "'"$LICENSE"'"}' > /dev/null |
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else |
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signed_request "${CA_NEW_REG}" '{"resource": "new-reg", "agreement": "'"$LICENSE"'"}' > /dev/null |
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fi |
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fi |
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if [[ "${CHALLENGETYPE}" = "http-01" && ! -d "${WELLKNOWN}" ]]; then |
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_exiterr "WELLKNOWN directory doesn't exist, please create ${WELLKNOWN} and set appropriate permissions." |
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fi |
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} |
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# Different sed version for different os types... |
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_sed() { |
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if [[ "${OSTYPE}" = "Linux" ]]; then |
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sed -r "${@}" |
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else |
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sed -E "${@}" |
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fi |
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} |
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# Print error message and exit with error |
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_exiterr() { |
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echo "ERROR: ${1}" >&2 |
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exit 1 |
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} |
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# Encode data as url-safe formatted base64 |
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urlbase64() { |
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# urlbase64: base64 encoded string with '+' replaced with '-' and '/' replaced with '_' |
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openssl base64 -e | tr -d '\n\r' | _sed -e 's:=*$::g' -e 'y:+/:-_:' |
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} |
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# Convert hex string to binary data |
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hex2bin() { |
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# Remove spaces, add leading zero, escape as hex string and parse with printf |
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printf -- "$(cat | _sed -e 's/[[:space:]]//g' -e 's/^(.(.{2})*)$/0\1/' -e 's/(.{2})/\\x\1/g')" |
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} |
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# Get string value from json dictionary |
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get_json_string_value() { |
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grep -Eo '"'"${1}"'":[[:space:]]*"[^"]*"' | cut -d'"' -f4 |
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} |
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# OpenSSL writes to stderr/stdout even when there are no errors. So just |
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# display the output if the exit code was != 0 to simplify debugging. |
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_openssl() { |
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set +e |
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out="$(openssl "${@}" 2>&1)" |
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res=$? |
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set -e |
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if [[ $res -ne 0 ]]; then |
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echo " + ERROR: failed to run $* (Exitcode: $res)" >&2 |
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echo >&2 |
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echo "Details:" >&2 |
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echo "$out" >&2 |
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exit $res |
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fi |
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} |
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# Send http(s) request with specified method |
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http_request() { |
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tempcont="$(mktemp -t XXXXXX)" |
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if [[ "${1}" = "head" ]]; then |
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statuscode="$(curl -s -w "%{http_code}" -o "${tempcont}" "${2}" -I)" |
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elif [[ "${1}" = "get" ]]; then |
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statuscode="$(curl -s -w "%{http_code}" -o "${tempcont}" "${2}")" |
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elif [[ "${1}" = "post" ]]; then |
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statuscode="$(curl -s -w "%{http_code}" -o "${tempcont}" "${2}" -d "${3}")" |
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else |
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_exiterr "Unknown request method: ${1}" |
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fi |
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if [[ ! "${statuscode:0:1}" = "2" ]]; then |
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echo " + ERROR: An error occurred while sending ${1}-request to ${2} (Status ${statuscode})" >&2 |
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echo >&2 |
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echo "Details:" >&2 |
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cat "${tempcont}" >&2 |
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rm -f "${tempcont}" |
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# Wait for hook script to clean the challenge if used |
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if [[ -n "${HOOK}" ]] && [[ -n "${challenge_token:+set}" ]]; then |
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${HOOK} "clean_challenge" '' "${challenge_token}" "${keyauth}" |
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fi |
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# remove temporary domains.txt file if used |
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[[ -n "${PARAM_DOMAIN:-}" ]] && rm "${DOMAINS_TXT}" |
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exit 1 |
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fi |
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cat "${tempcont}" |
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rm -f "${tempcont}" |
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} |
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# Send signed request |
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signed_request() { |
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# Encode payload as urlbase64 |
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payload64="$(printf '%s' "${2}" | urlbase64)" |
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# Retrieve nonce from acme-server |
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nonce="$(http_request head "${CA}" | grep Replay-Nonce: | awk -F ': ' '{print $2}' | tr -d '\n\r')" |
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# Build header with just our public key and algorithm information |
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header='{"alg": "RS256", "jwk": {"e": "'"${pubExponent64}"'", "kty": "RSA", "n": "'"${pubMod64}"'"}}' |
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# Build another header which also contains the previously received nonce and encode it as urlbase64 |
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protected='{"alg": "RS256", "jwk": {"e": "'"${pubExponent64}"'", "kty": "RSA", "n": "'"${pubMod64}"'"}, "nonce": "'"${nonce}"'"}' |
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protected64="$(printf '%s' "${protected}" | urlbase64)" |
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# Sign header with nonce and our payload with our private key and encode signature as urlbase64 |
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signed64="$(printf '%s' "${protected64}.${payload64}" | openssl dgst -sha256 -sign "${PRIVATE_KEY}" | urlbase64)" |
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# Send header + extended header + payload + signature to the acme-server |
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data='{"header": '"${header}"', "protected": "'"${protected64}"'", "payload": "'"${payload64}"'", "signature": "'"${signed64}"'"}' |
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http_request post "${1}" "${data}" |
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} |
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# Extracts all subject names from a CSR |
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# Outputs either the CN, or the SANs, one per line |
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extract_altnames() { |
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csr="${1}" # the CSR itself (not a file) |
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if ! <<<"${csr}" openssl req -verify -noout 2>/dev/null; then |
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_exiterr "Certificate signing request isn't valid" |
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fi |
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reqtext="$( <<<"${csr}" openssl req -noout -text )" |
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if <<<"$reqtext" grep -q '^[[:space:]]*X509v3 Subject Alternative Name:[[:space:]]*$'; then |
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# SANs used, extract these |
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altnames="$( <<<"${reqtext}" grep -A1 '^[[:space:]]*X509v3 Subject Alternative Name:[[:space:]]*$' | tail -n1 )" |
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# split to one per line: |
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altnames="$( <<<"${altnames}" _sed -e 's/^[[:space:]]*//; s/, /\'$'\n''/' )" |
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# we can only get DNS: ones signed |
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if [ -n "$( <<<"${altnames}" grep -v '^DNS:' )" ]; then |
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_exiterr "Certificate signing request contains non-DNS Subject Alternative Names" |
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fi |
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# strip away the DNS: prefix |
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altnames="$( <<<"${altnames}" _sed -e 's/^DNS://' )" |
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echo "$altnames" |
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else |
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# No SANs, extract CN |
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altnames="$( <<<"${reqtext}" grep '^[[:space:]]*Subject:' | _sed -e 's/.* CN=([^ /,]*).*/\1/' )" |
|
|
|
|
echo "$altnames" |
|
|
|
|
fi |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
# Create certificate for domain(s) and outputs it FD 3 |
|
|
|
|
sign_csr() { |
|
|
|
|
csr="${1}" # the CSR itself (not a file) |
|
|
|
|
|
|
|
|
|
if { true >&3; } 2>/dev/null; then |
|
|
|
|
: # fd 3 looks OK |
|
|
|
|
else |
|
|
|
|
_exiterr "sign_csr: FD 3 not open" |
|
|
|
|
fi |
|
|
|
|
|
|
|
|
|
shift 1 || true |
|
|
|
|
altnames="${*:-}" |
|
|
|
|
if [ -z "$altnames" ]; then |
|
|
|
|
altnames="$( extract_altnames "$csr" )" |
|
|
|
|
fi |
|
|
|
|
|
|
|
|
|
if [[ -z "${CA_NEW_AUTHZ}" ]] || [[ -z "${CA_NEW_CERT}" ]]; then |
|
|
|
|
_exiterr "Certificate authority doesn't allow certificate signing" |
|
|
|
|
fi |
|
|
|
|
|
|
|
|
|
# Request and respond to challenges |
|
|
|
|
for altname in ${altnames}; do |
|
|
|
|
# Ask the acme-server for new challenge token and extract them from the resulting json block |
|
|
|
|
echo " + Requesting challenge for ${altname}..." |
|
|
|
|
response="$(signed_request "${CA_NEW_AUTHZ}" '{"resource": "new-authz", "identifier": {"type": "dns", "value": "'"${altname}"'"}}')" |
|
|
|
|
|
|
|
|
|
challenges="$(printf '%s\n' "${response}" | grep -Eo '"challenges":[^\[]*\[[^]]*]')" |
|
|
|
|
repl=$'\n''{' # fix syntax highlighting in Vim |
|
|
|
|
challenge="$(printf "%s" "${challenges//\{/${repl}}" | grep \""${CHALLENGETYPE}"\")" |
|
|
|
|
challenge_token="$(printf '%s' "${challenge}" | get_json_string_value token | _sed 's/[^A-Za-z0-9_\-]/_/g')" |
|
|
|
|
challenge_uri="$(printf '%s' "${challenge}" | get_json_string_value uri)" |
|
|
|
|
|
|
|
|
|
if [[ -z "${challenge_token}" ]] || [[ -z "${challenge_uri}" ]]; then |
|
|
|
|
_exiterr "Can't retrieve challenges (${response})" |
|
|
|
|
fi |
|
|
|
|
|
|
|
|
|
# Challenge response consists of the challenge token and the thumbprint of our public certificate |
|
|
|
|
keyauth="${challenge_token}.${thumbprint}" |
|
|
|
|
|
|
|
|
|
case "${CHALLENGETYPE}" in |
|
|
|
|
"http-01") |
|
|
|
|
# Store challenge response in well-known location and make world-readable (so that a webserver can access it) |
|
|
|
|
printf '%s' "${keyauth}" > "${WELLKNOWN}/${challenge_token}" |
|
|
|
|
chmod a+r "${WELLKNOWN}/${challenge_token}" |
|
|
|
|
keyauth_hook="${keyauth}" |
|
|
|
|
;; |
|
|
|
|
"dns-01") |
|
|
|
|
# Generate DNS entry content for dns-01 validation |
|
|
|
|
keyauth_hook="$(printf '%s' "${keyauth}" | openssl sha -sha256 -binary | urlbase64)" |
|
|
|
|
;; |
|
|
|
|
esac |
|
|
|
|
|
|
|
|
|
# Wait for hook script to deploy the challenge if used |
|
|
|
|
[[ -n "${HOOK}" ]] && ${HOOK} "deploy_challenge" "${altname}" "${challenge_token}" "${keyauth_hook}" |
|
|
|
|
|
|
|
|
|
# Ask the acme-server to verify our challenge and wait until it is no longer pending |
|
|
|
|
echo " + Responding to challenge for ${altname}..." |
|
|
|
|
result="$(signed_request "${challenge_uri}" '{"resource": "challenge", "keyAuthorization": "'"${keyauth}"'"}')" |
|
|
|
|
|
|
|
|
|
status="$(printf '%s\n' "${result}" | get_json_string_value status)" |
|
|
|
|
|
|
|
|
|
while [[ "${status}" = "pending" ]]; do |
|
|
|
|
sleep 1 |
|
|
|
|
result="$(http_request get "${challenge_uri}")" |
|
|
|
|
status="$(printf '%s\n' "${result}" | get_json_string_value status)" |
|
|
|
|
done |
|
|
|
|
|
|
|
|
|
[[ "${CHALLENGETYPE}" = "http-01" ]] && rm -f "${WELLKNOWN}/${challenge_token}" |
|
|
|
|
|
|
|
|
|
# Wait for hook script to clean the challenge if used |
|
|
|
|
if [[ -n "${HOOK}" ]] && [[ -n "${challenge_token}" ]]; then |
|
|
|
|
${HOOK} "clean_challenge" "${altname}" "${challenge_token}" "${keyauth_hook}" |
|
|
|
|
fi |
|
|
|
|
|
|
|
|
|
if [[ "${status}" = "valid" ]]; then |
|
|
|
|
echo " + Challenge is valid!" |
|
|
|
|
else |
|
|
|
|
_exiterr "Challenge is invalid! (returned: ${status}) (result: ${result})" |
|
|
|
|
fi |
|
|
|
|
done |
|
|
|
|
|
|
|
|
|
# Finally request certificate from the acme-server and store it in cert-${timestamp}.pem and link from cert.pem |
|
|
|
|
echo " + Requesting certificate..." |
|
|
|
|
csr64="$( <<<"${csr}" openssl req -outform DER | urlbase64)" |
|
|
|
|
crt64="$(signed_request "${CA_NEW_CERT}" '{"resource": "new-cert", "csr": "'"${csr64}"'"}' | openssl base64 -e)" |
|
|
|
|
crt="$( printf -- '-----BEGIN CERTIFICATE-----\n%s\n-----END CERTIFICATE-----\n' "${crt64}" )" |
|
|
|
|
|
|
|
|
|
# Try to load the certificate to detect corruption |
|
|
|
|
echo " + Checking certificate..." |
|
|
|
|
_openssl x509 -text <<<"${crt}" |
|
|
|
|
|
|
|
|
|
echo "${crt}" >&3 |
|
|
|
|
|
|
|
|
|
unset challenge_token |
|
|
|
|
echo " + Done!" |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
# Create certificate for domain(s) |
|
|
|
|
sign_domain() { |
|
|
|
|
domain="${1}" |
|
|
|
|
altnames="${*}" |
|
|
|
|
timestamp="$(date +%s)" |
|
|
|
|
|
|
|
|
|
echo " + Signing domains..." |
|
|
|
|
if [[ -z "${CA_NEW_AUTHZ}" ]] || [[ -z "${CA_NEW_CERT}" ]]; then |
|
|
|
|
_exiterr "Certificate authority doesn't allow certificate signing" |
|
|
|
|
fi |
|
|
|
|
|
|
|
|
|
# If there is no existing certificate directory => make it |
|
|
|
|
if [[ ! -e "${BASEDIR}/certs/${domain}" ]]; then |
|
|
|
|
echo " + Creating new directory ${BASEDIR}/certs/${domain} ..." |
|
|
|
|
mkdir -p "${BASEDIR}/certs/${domain}" |
|
|
|
|
fi |
|
|
|
|
|
|
|
|
|
privkey="privkey.pem" |
|
|
|
|
# generate a new private key if we need or want one |
|
|
|
|
if [[ ! -f "${BASEDIR}/certs/${domain}/privkey.pem" ]] || [[ "${PRIVATE_KEY_RENEW}" = "yes" ]]; then |
|
|
|
|
echo " + Generating private key..." |
|
|
|
|
privkey="privkey-${timestamp}.pem" |
|
|
|
|
case "${KEY_ALGO}" in |
|
|
|
|
rsa) _openssl genrsa -out "${BASEDIR}/certs/${domain}/privkey-${timestamp}.pem" "${KEYSIZE}";; |
|
|
|
|
prime256v1|secp384r1) _openssl ecparam -genkey -name "${KEY_ALGO}" -out "${BASEDIR}/certs/${domain}/privkey-${timestamp}.pem";; |
|
|
|
|
esac |
|
|
|
|
fi |
|
|
|
|
|
|
|
|
|
# Generate signing request config and the actual signing request |
|
|
|
|
echo " + Generating signing request..." |
|
|
|
|
SAN="" |
|
|
|
|
for altname in ${altnames}; do |
|
|
|
|
SAN+="DNS:${altname}, " |
|
|
|
|
done |
|
|
|
|
SAN="${SAN%%, }" |
|
|
|
|
local tmp_openssl_cnf |
|
|
|
|
tmp_openssl_cnf="$(mktemp -t XXXXXX)" |
|
|
|
|
cat "${OPENSSL_CNF}" > "${tmp_openssl_cnf}" |
|
|
|
|
printf "[SAN]\nsubjectAltName=%s" "${SAN}" >> "${tmp_openssl_cnf}" |
|
|
|
|
openssl req -new -sha256 -key "${BASEDIR}/certs/${domain}/${privkey}" -out "${BASEDIR}/certs/${domain}/cert-${timestamp}.csr" -subj "/CN=${domain}/" -reqexts SAN -config "${tmp_openssl_cnf}" |
|
|
|
|
rm -f "${tmp_openssl_cnf}" |
|
|
|
|
|
|
|
|
|
crt_path="${BASEDIR}/certs/${domain}/cert-${timestamp}.pem" |
|
|
|
|
sign_csr "$(< "${BASEDIR}/certs/${domain}/cert-${timestamp}.csr" )" ${altnames} 3>"${crt_path}" |
|
|
|
|
|
|
|
|
|
# Create fullchain.pem |
|
|
|
|
echo " + Creating fullchain.pem..." |
|
|
|
|
cat "${crt_path}" > "${BASEDIR}/certs/${domain}/fullchain-${timestamp}.pem" |
|
|
|
|
http_request get "$(openssl x509 -in "${BASEDIR}/certs/${domain}/cert-${timestamp}.pem" -noout -text | grep 'CA Issuers - URI:' | cut -d':' -f2-)" > "${BASEDIR}/certs/${domain}/chain-${timestamp}.pem" |
|
|
|
|
if ! grep -q "BEGIN CERTIFICATE" "${BASEDIR}/certs/${domain}/chain-${timestamp}.pem"; then |
|
|
|
|
openssl x509 -in "${BASEDIR}/certs/${domain}/chain-${timestamp}.pem" -inform DER -out "${BASEDIR}/certs/${domain}/chain-${timestamp}.pem" -outform PEM |
|
|
|
|
fi |
|
|
|
|
cat "${BASEDIR}/certs/${domain}/chain-${timestamp}.pem" >> "${BASEDIR}/certs/${domain}/fullchain-${timestamp}.pem" |
|
|
|
|
|
|
|
|
|
# Update symlinks |
|
|
|
|
[[ "${privkey}" = "privkey.pem" ]] || ln -sf "privkey-${timestamp}.pem" "${BASEDIR}/certs/${domain}/privkey.pem" |
|
|
|
|
|
|
|
|
|
ln -sf "chain-${timestamp}.pem" "${BASEDIR}/certs/${domain}/chain.pem" |
|
|
|
|
ln -sf "fullchain-${timestamp}.pem" "${BASEDIR}/certs/${domain}/fullchain.pem" |
|
|
|
|
ln -sf "cert-${timestamp}.csr" "${BASEDIR}/certs/${domain}/cert.csr" |
|
|
|
|
ln -sf "cert-${timestamp}.pem" "${BASEDIR}/certs/${domain}/cert.pem" |
|
|
|
|
|
|
|
|
|
# Wait for hook script to clean the challenge and to deploy cert if used |
|
|
|
|
[[ -n "${HOOK}" ]] && ${HOOK} "deploy_cert" "${domain}" "${BASEDIR}/certs/${domain}/privkey.pem" "${BASEDIR}/certs/${domain}/cert.pem" "${BASEDIR}/certs/${domain}/fullchain.pem" |
|
|
|
|
|
|
|
|
|
unset challenge_token |
|
|
|
|
echo " + Done!" |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
# Usage: --cron (-c) |
|
|
|
|
# Description: Sign/renew non-existant/changed/expiring certificates. |
|
|
|
|
command_sign_domains() { |
|
|
|
|
init_system |
|
|
|
|
|
|
|
|
|
if [[ -n "${PARAM_DOMAIN:-}" ]]; then |
|
|
|
|
DOMAINS_TXT="$(mktemp -t XXXXXX)" |
|
|
|
|
printf -- "${PARAM_DOMAIN}" > "${DOMAINS_TXT}" |
|
|
|
|
elif [[ -e "${BASEDIR}/domains.txt" ]]; then |
|
|
|
|
DOMAINS_TXT="${BASEDIR}/domains.txt" |
|
|
|
|
else |
|
|
|
|
_exiterr "domains.txt not found and --domain not given" |
|
|
|
|
fi |
|
|
|
|
|
|
|
|
|
# Generate certificates for all domains found in domains.txt. Check if existing certificate are about to expire |
|
|
|
|
<"${DOMAINS_TXT}" _sed -e 's/^[[:space:]]*//g' -e 's/[[:space:]]*$//g' -e 's/[[:space:]]+/ /g' | (grep -vE '^(#|$)' || true) | while read -r line; do |
|
|
|
|
domain="$(printf '%s\n' "${line}" | cut -d' ' -f1)" |
|
|
|
|
morenames="$(printf '%s\n' "${line}" | cut -s -d' ' -f2-)" |
|
|
|
|
cert="${BASEDIR}/certs/${domain}/cert.pem" |
|
|
|
|
|
|
|
|
|
force_renew="${PARAM_FORCE:-no}" |
|
|
|
|
|
|
|
|
|
if [[ -z "${morenames}" ]];then |
|
|
|
|
echo "Processing ${domain}" |
|
|
|
|
else |
|
|
|
|
echo "Processing ${domain} with alternative names: ${morenames}" |
|
|
|
|
fi |
|
|
|
|
|
|
|
|
|
if [[ -e "${cert}" ]]; then |
|
|
|
|
printf " + Checking domain name(s) of existing cert..." |
|
|
|
|
|
|
|
|
|
certnames="$(openssl x509 -in "${cert}" -text -noout | grep DNS: | _sed 's/DNS://g' | tr -d ' ' | tr ',' '\n' | sort -u | tr '\n' ' ' | _sed 's/ $//')" |
|
|
|
|
givennames="$(echo "${domain}" "${morenames}"| tr ' ' '\n' | sort -u | tr '\n' ' ' | _sed 's/ $//' | _sed 's/^ //')" |
|
|
|
|
|
|
|
|
|
if [[ "${certnames}" = "${givennames}" ]]; then |
|
|
|
|
echo " unchanged." |
|
|
|
|
else |
|
|
|
|
echo " changed!" |
|
|
|
|
echo " + Domain name(s) are not matching!" |
|
|
|
|
echo " + Names in old certificate: ${certnames}" |
|
|
|
|
echo " + Configured names: ${givennames}" |
|
|
|
|
echo " + Forcing renew." |
|
|
|
|
force_renew="yes" |
|
|
|
|
fi |
|
|
|
|
fi |
|
|
|
|
|
|
|
|
|
if [[ -e "${cert}" ]]; then |
|
|
|
|
echo " + Checking expire date of existing cert..." |
|
|
|
|
valid="$(openssl x509 -enddate -noout -in "${cert}" | cut -d= -f2- )" |
|
|
|
|
|
|
|
|
|
printf " + Valid till %s " "${valid}" |
|
|
|
|
if openssl x509 -checkend $((RENEW_DAYS * 86400)) -noout -in "${cert}"; then |
|
|
|
|
printf "(Longer than %d days). " "${RENEW_DAYS}" |
|
|
|
|
if [[ "${force_renew}" = "yes" ]]; then |
|
|
|
|
echo "Ignoring because renew was forced!" |
|
|
|
|
else |
|
|
|
|
echo "Skipping!" |
|
|
|
|
continue |
|
|
|
|
fi |
|
|
|
|
else |
|
|
|
|
echo "(Less than ${RENEW_DAYS} days). Renewing!" |
|
|
|
|
fi |
|
|
|
|
fi |
|
|
|
|
|
|
|
|
|
# shellcheck disable=SC2086 |
|
|
|
|
sign_domain ${line} |
|
|
|
|
done |
|
|
|
|
|
|
|
|
|
# remove temporary domains.txt file if used |
|
|
|
|
[[ -n "${PARAM_DOMAIN:-}" ]] && rm -f "${DOMAINS_TXT}" |
|
|
|
|
|
|
|
|
|
exit 0 |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
# Usage: --signcsr (-s) path/to/csr.pem |
|
|
|
|
# Description: Sign a given CSR, output CRT on stdout (advanced usage) |
|
|
|
|
command_sign_csr() { |
|
|
|
|
# redirect stdout to stderr |
|
|
|
|
# leave stdout over at fd 3 to output the cert |
|
|
|
|
exec 3>&1 1>&2 |
|
|
|
|
|
|
|
|
|
init_system |
|
|
|
|
|
|
|
|
|
csrfile="${1}" |
|
|
|
|
if [ ! -r "${csrfile}" ]; then |
|
|
|
|
_exiterr "Could not read certificate signing request ${csrfile}" |
|
|
|
|
fi |
|
|
|
|
|
|
|
|
|
sign_csr "$(< "${csrfile}" )" |
|
|
|
|
|
|
|
|
|
exit 0 |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
# Usage: --revoke (-r) path/to/cert.pem |
|
|
|
|
# Description: Revoke specified certificate |
|
|
|
|
command_revoke() { |
|
|
|
|
init_system |
|
|
|
|
|
|
|
|
|
[[ -n "${CA_REVOKE_CERT}" ]] || _exiterr "Certificate authority doesn't allow certificate revocation." |
|
|
|
|
|
|
|
|
|
cert="${1}" |
|
|
|
|
if [[ -L "${cert}" ]]; then |
|
|
|
|
# follow symlink and use real certificate name (so we move the real file and not the symlink at the end) |
|
|
|
|
local link_target |
|
|
|
|
link_target="$(readlink -n "${cert}")" |
|
|
|
|
if [[ "${link_target}" =~ ^/ ]]; then |
|
|
|
|
cert="${link_target}" |
|
|
|
|
else |
|
|
|
|
cert="$(dirname "${cert}")/${link_target}" |
|
|
|
|
fi |
|
|
|
|
fi |
|
|
|
|
[[ -f "${cert}" ]] || _exiterr "Could not find certificate ${cert}" |
|
|
|
|
|
|
|
|
|
echo "Revoking ${cert}" |
|
|
|
|
|
|
|
|
|
cert64="$(openssl x509 -in "${cert}" -inform PEM -outform DER | urlbase64)" |
|
|
|
|
response="$(signed_request "${CA_REVOKE_CERT}" '{"resource": "revoke-cert", "certificate": "'"${cert64}"'"}')" |
|
|
|
|
# if there is a problem with our revoke request _request (via signed_request) will report this and "exit 1" out |
|
|
|
|
# so if we are here, it is safe to assume the request was successful |
|
|
|
|
echo " + Done." |
|
|
|
|
echo " + Renaming certificate to ${cert}-revoked" |
|
|
|
|
mv -f "${cert}" "${cert}-revoked" |
|
|
|
|
} |
|
|
|
|
|
|
|
|
|
# Usage: --help (-h) |
|
|
|
|
# Description: Show help text |
|
|
|
|
command_help() { |
|
|
|
|
printf "Usage: %s [-h] [command [argument]] [parameter [argument]] [parameter [argument]] ...\n\n" "${0}" |
|
|
|
|
printf "Default command: help\n\n" |
|
|
|
|
echo "Commands:" |
|
|
|
|
grep -e '^[[:space:]]*# Usage:' -e '^[[:space:]]*# Description:' -e '^command_.*()[[:space:]]*{' "${0}" | while read -r usage; read -r description; read -r command; do |
|
|
|
|
if [[ ! "${usage}" =~ Usage ]] || [[ ! "${description}" =~ Description ]] || [[ ! "${command}" =~ ^command_ ]]; then |
|
|
|
|
_exiterr "Error generating help text." |
|
|
|
|
fi |
|
|
|
|
printf " %-32s %s\n" "${usage##"# Usage: "}" "${description##"# Description: "}" |
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done |
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printf -- "\nParameters:\n" |
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grep -E -e '^[[:space:]]*# PARAM_Usage:' -e '^[[:space:]]*# PARAM_Description:' "${0}" | while read -r usage; read -r description; do |
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if [[ ! "${usage}" =~ Usage ]] || [[ ! "${description}" =~ Description ]]; then |
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_exiterr "Error generating help text." |
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fi |
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printf " %-32s %s\n" "${usage##"# PARAM_Usage: "}" "${description##"# PARAM_Description: "}" |
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done |
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} |
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# Usage: --env (-e) |
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# Description: Output configuration variables for use in other scripts |
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command_env() { |
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echo "# letsencrypt.sh configuration" |
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load_config |
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typeset -p CA LICENSE CHALLENGETYPE HOOK RENEW_DAYS PRIVATE_KEY KEYSIZE WELLKNOWN PRIVATE_KEY_RENEW OPENSSL_CNF CONTACT_EMAIL LOCKFILE |
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} |
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# Main method (parses script arguments and calls command_* methods) |
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main() { |
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COMMAND="" |
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set_command() { |
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[[ -z "${COMMAND}" ]] || _exiterr "Only one command can be executed at a time. See help (-h) for more information." |
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COMMAND="${1}" |
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} |
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check_parameters() { |
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if [[ -z "${1:-}" ]]; then |
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echo "The specified command requires additional parameters. See help:" >&2 |
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echo >&2 |
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command_help >&2 |
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exit 1 |
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elif [[ "${1:0:1}" = "-" ]]; then |
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_exiterr "Invalid argument: ${1}" |
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fi |
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} |
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[[ -z "${@}" ]] && eval set -- "--help" |
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while (( "${#}" )); do |
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case "${1}" in |
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--help|-h) |
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command_help |
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exit 0 |
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;; |
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--env|-e) |
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set_command env |
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;; |
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--cron|-c) |
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set_command sign_domains |
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;; |
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--signcsr|-s) |
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shift 1 |
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set_command sign_csr |
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check_parameters "${1:-}" |
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PARAM_CSR="${1}" |
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;; |
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--revoke|-r) |
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shift 1 |
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set_command revoke |
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check_parameters "${1:-}" |
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PARAM_REVOKECERT="${1}" |
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;; |
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# PARAM_Usage: --domain (-d) domain.tld |
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# PARAM_Description: Use specified domain name(s) instead of domains.txt entry (one certificate!) |
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--domain|-d) |
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shift 1 |
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check_parameters "${1:-}" |
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if [[ -z "${PARAM_DOMAIN:-}" ]]; then |
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PARAM_DOMAIN="${1}" |
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else |
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PARAM_DOMAIN="${PARAM_DOMAIN} ${1}" |
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fi |
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;; |
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# PARAM_Usage: --force (-x) |
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# PARAM_Description: Force renew of certificate even if it is longer valid than value in RENEW_DAYS |
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--force|-x) |
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PARAM_FORCE="yes" |
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;; |
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# PARAM_Usage: --privkey (-p) path/to/key.pem |
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# PARAM_Description: Use specified private key instead of account key (useful for revocation) |
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--privkey|-p) |
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shift 1 |
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check_parameters "${1:-}" |
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PARAM_PRIVATE_KEY="${1}" |
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;; |
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# PARAM_Usage: --config (-f) path/to/config.sh |
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# PARAM_Description: Use specified config file |
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--config|-f) |
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shift 1 |
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check_parameters "${1:-}" |
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CONFIG="${1}" |
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;; |
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# PARAM_Usage: --hook (-k) path/to/hook.sh |
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# PARAM_Description: Use specified script for hooks |
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--hook|-k) |
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|
shift 1 |
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|
check_parameters "${1:-}" |
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PARAM_HOOK="${1}" |
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;; |
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# PARAM_Usage: --challenge (-t) http-01|dns-01 |
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|
# PARAM_Description: Which challenge should be used? Currently http-01 and dns-01 are supported |
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--challenge|-t) |
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|
shift 1 |
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check_parameters "${1:-}" |
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|
PARAM_CHALLENGETYPE="${1}" |
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|
;; |
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# PARAM_Usage: --algo (-a) rsa|prime256v1|secp384r1 |
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|
# PARAM_Description: Which public key algorithm should be used? Supported: rsa, prime256v1 and secp384r1 |
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|
--algo|-a) |
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|
shift 1 |
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|
check_parameters "${1:-}" |
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|
PARAM_KEY_ALGO="${1}" |
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|
;; |
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|
*) |
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|
|
echo "Unknown parameter detected: ${1}" >&2 |
|
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|
|
echo >&2 |
|
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|
|
command_help >&2 |
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|
|
exit 1 |
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|
;; |
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|
esac |
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|
|
shift 1 |
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|
done |
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|
|
case "${COMMAND}" in |
|
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|
|
env) command_env;; |
|
|
|
|
sign_domains) command_sign_domains;; |
|
|
|
|
sign_csr) command_sign_csr "${PARAM_CSR}";; |
|
|
|
|
revoke) command_revoke "${PARAM_REVOKECERT}";; |
|
|
|
|
*) command_help; exit 1;; |
|
|
|
|
esac |
|
|
|
|
} |
|
|
|
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|
|
|
# Determine OS type |
|
|
|
|
OSTYPE="$(uname)" |
|
|
|
|
|
|
|
|
|
# Check for missing dependencies |
|
|
|
|
check_dependencies |
|
|
|
|
|
|
|
|
|
# Run script |
|
|
|
|
main "${@:-}" |
Daniel Berteaud
9 years ago