/
dehydrated
executable file
·2404 lines (2110 loc) · 86.9 KB
/
dehydrated
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#!/usr/bin/env bash
# dehydrated by lukas2511
# Source: https://dehydrated.io
#
# This script is licensed under The MIT License (see LICENSE for more information).
set -e
set -u
set -o pipefail
[[ -n "${ZSH_VERSION:-}" ]] && set -o SH_WORD_SPLIT && set +o FUNCTION_ARGZERO && set -o NULL_GLOB && set -o noglob
[[ -z "${ZSH_VERSION:-}" ]] && shopt -s nullglob && set -f
umask 077 # paranoid umask, we're creating private keys
# Close weird external file descriptors
exec 3>&-
exec 4>&-
VERSION="0.7.2"
# Find directory in which this script is stored by traversing all symbolic links
SOURCE="${0}"
while [ -h "$SOURCE" ]; do # resolve $SOURCE until the file is no longer a symlink
DIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
SOURCE="$(readlink "$SOURCE")"
[[ $SOURCE != /* ]] && SOURCE="$DIR/$SOURCE" # if $SOURCE was a relative symlink, we need to resolve it relative to the path where the symlink file was located
done
SCRIPTDIR="$( cd -P "$( dirname "$SOURCE" )" && pwd )"
BASEDIR="${SCRIPTDIR}"
ORIGARGS=("${@}")
noglob_set() {
if [[ -n "${ZSH_VERSION:-}" ]]; then
set +o noglob
else
set +f
fi
}
noglob_clear() {
if [[ -n "${ZSH_VERSION:-}" ]]; then
set -o noglob
else
set -f
fi
}
# Generate json.sh path matching string
json_path() {
if [ ! "${1}" = "-p" ]; then
printf '"%s"' "${1}"
else
printf '%s' "${2}"
fi
}
# Get string value from json dictionary
get_json_string_value() {
local filter
filter="$(printf 's/.*\[%s\][[:space:]]*"\([^"]*\)"/\\1/p' "$(json_path "${1:-}" "${2:-}")")"
sed -n "${filter}"
}
# Get array values from json dictionary
get_json_array_values() {
grep -E '^\['"$(json_path "${1:-}" "${2:-}")"',[0-9]*\]' | sed -e 's/\[[^\]*\][[:space:]]*//g' -e 's/^"//' -e 's/"$//'
}
# Get sub-dictionary from json
get_json_dict_value() {
local filter
filter="$(printf 's/.*\[%s\][[:space:]]*\(.*\)/\\1/p' "$(json_path "${1:-}" "${2:-}")")"
sed -n "${filter}" | jsonsh
}
# Get integer value from json
get_json_int_value() {
local filter
filter="$(printf 's/.*\[%s\][[:space:]]*\([^"]*\)/\\1/p' "$(json_path "${1:-}" "${2:-}")")"
sed -n "${filter}"
}
# Get boolean value from json
get_json_bool_value() {
local filter
filter="$(printf 's/.*\[%s\][[:space:]]*\([^"]*\)/\\1/p' "$(json_path "${1:-}" "${2:-}")")"
sed -n "${filter}"
}
# JSON.sh JSON-parser
# Modified from https://github.com/dominictarr/JSON.sh
# Original Copyright (c) 2011 Dominic Tarr
# Licensed under The MIT License
jsonsh() {
throw() {
echo "$*" >&2
exit 1
}
awk_egrep () {
local pattern_string=$1
awk '{
while ($0) {
start=match($0, pattern);
token=substr($0, start, RLENGTH);
print token;
$0=substr($0, start+RLENGTH);
}
}' pattern="$pattern_string"
}
tokenize () {
local GREP
local ESCAPE
local CHAR
if echo "test string" | grep -Eao --color=never "test" >/dev/null 2>&1
then
GREP='grep -Eao --color=never'
else
GREP='grep -Eao'
fi
# shellcheck disable=SC2196
if echo "test string" | grep -Eao "test" >/dev/null 2>&1
then
ESCAPE='(\\[^u[:cntrl:]]|\\u[0-9a-fA-F]{4})'
CHAR='[^[:cntrl:]"\\]'
else
GREP=awk_egrep
ESCAPE='(\\\\[^u[:cntrl:]]|\\u[0-9a-fA-F]{4})'
CHAR='[^[:cntrl:]"\\\\]'
fi
local STRING="\"$CHAR*($ESCAPE$CHAR*)*\""
local NUMBER='-?(0|[1-9][0-9]*)([.][0-9]*)?([eE][+-]?[0-9]*)?'
local KEYWORD='null|false|true'
local SPACE='[[:space:]]+'
# Force zsh to expand $A into multiple words
local is_wordsplit_disabled
is_wordsplit_disabled="$(unsetopt 2>/dev/null | grep -c '^shwordsplit$' || true)"
if [ "${is_wordsplit_disabled}" != "0" ]; then setopt shwordsplit; fi
$GREP "$STRING|$NUMBER|$KEYWORD|$SPACE|." | grep -Ev "^$SPACE$"
if [ "${is_wordsplit_disabled}" != "0" ]; then unsetopt shwordsplit; fi
}
parse_array () {
local index=0
local ary=''
read -r token
case "$token" in
']') ;;
*)
while :
do
parse_value "$1" "$index"
index=$((index+1))
ary="$ary""$value"
read -r token
case "$token" in
']') break ;;
',') ary="$ary," ;;
*) throw "EXPECTED , or ] GOT ${token:-EOF}" ;;
esac
read -r token
done
;;
esac
value=$(printf '[%s]' "$ary") || value=
:
}
parse_object () {
local key
local obj=''
read -r token
case "$token" in
'}') ;;
*)
while :
do
case "$token" in
'"'*'"') key=$token ;;
*) throw "EXPECTED string GOT ${token:-EOF}" ;;
esac
read -r token
case "$token" in
':') ;;
*) throw "EXPECTED : GOT ${token:-EOF}" ;;
esac
read -r token
parse_value "$1" "$key"
obj="$obj$key:$value"
read -r token
case "$token" in
'}') break ;;
',') obj="$obj," ;;
*) throw "EXPECTED , or } GOT ${token:-EOF}" ;;
esac
read -r token
done
;;
esac
value=$(printf '{%s}' "$obj") || value=
:
}
parse_value () {
local jpath="${1:+$1,}${2:-}"
case "$token" in
'{') parse_object "$jpath" ;;
'[') parse_array "$jpath" ;;
# At this point, the only valid single-character tokens are digits.
''|[!0-9]) throw "EXPECTED value GOT ${token:-EOF}" ;;
*) value="${token//\\\///}"
# replace solidus ("\/") in json strings with normalized value: "/"
;;
esac
[ "$value" = '' ] && return
[ -z "$jpath" ] && return # do not print head
printf "[%s]\t%s\n" "$jpath" "$value"
:
}
parse () {
read -r token
parse_value
read -r token || true
case "$token" in
'') ;;
*) throw "EXPECTED EOF GOT $token" ;;
esac
}
tokenize | parse
}
# Convert IP addresses to their reverse dns variants.
# Used for ALPN certs as validation for IPs uses this in SNI since IPs aren't allowed there.
ip_to_ptr() {
ip="$(cat)"
if [[ "${ip}" =~ : ]]; then
printf "%sip6.arpa" "$(printf "%s" "${ip}" | awk -F: 'BEGIN {OFS=""; }{addCount = 9 - NF; for(i=1; i<=NF;i++){if(length($i) == 0){ for(j=1;j<=addCount;j++){$i = ($i "0000");} } else { $i = substr(("0000" $i), length($i)+5-4);}}; print}' | rev | sed -e "s/./&./g")"
else
printf "%s.in-addr.arpa" "$(printf "%s" "${ip}" | awk -F. '{print $4"."$3"." $2"."$1}')"
fi
}
# Create (identifiable) temporary files
_mktemp() {
mktemp "${TMPDIR:-/tmp}/dehydrated-XXXXXX"
}
# Check for script dependencies
check_dependencies() {
# look for required binaries
for binary in grep mktemp diff sed awk curl cut head tail hexdump; do
bin_path="$(command -v "${binary}" 2>/dev/null)" || _exiterr "This script requires ${binary}."
[[ -x "${bin_path}" ]] || _exiterr "${binary} found in PATH but it's not executable"
done
# just execute some dummy and/or version commands to see if required tools are actually usable
"${OPENSSL}" version > /dev/null 2>&1 || _exiterr "This script requires an openssl binary."
_sed "" < /dev/null > /dev/null 2>&1 || _exiterr "This script requires sed with support for extended (modern) regular expressions."
# curl returns with an error code in some ancient versions so we have to catch that
set +e
CURL_VERSION="$(curl -V 2>&1 | head -n1 | awk '{print $2}')"
set -e
}
store_configvars() {
__KEY_ALGO="${KEY_ALGO}"
__OCSP_MUST_STAPLE="${OCSP_MUST_STAPLE}"
__OCSP_FETCH="${OCSP_FETCH}"
__OCSP_DAYS="${OCSP_DAYS}"
__PRIVATE_KEY_RENEW="${PRIVATE_KEY_RENEW}"
__PRIVATE_KEY_ROLLOVER="${PRIVATE_KEY_ROLLOVER}"
__KEYSIZE="${KEYSIZE}"
__CHALLENGETYPE="${CHALLENGETYPE}"
__HOOK="${HOOK}"
__PREFERRED_CHAIN="${PREFERRED_CHAIN}"
__WELLKNOWN="${WELLKNOWN}"
__HOOK_CHAIN="${HOOK_CHAIN}"
__OPENSSL_CNF="${OPENSSL_CNF}"
__RENEW_DAYS="${RENEW_DAYS}"
__IP_VERSION="${IP_VERSION}"
}
reset_configvars() {
KEY_ALGO="${__KEY_ALGO}"
OCSP_MUST_STAPLE="${__OCSP_MUST_STAPLE}"
OCSP_FETCH="${__OCSP_FETCH}"
OCSP_DAYS="${__OCSP_DAYS}"
PRIVATE_KEY_RENEW="${__PRIVATE_KEY_RENEW}"
PRIVATE_KEY_ROLLOVER="${__PRIVATE_KEY_ROLLOVER}"
KEYSIZE="${__KEYSIZE}"
CHALLENGETYPE="${__CHALLENGETYPE}"
HOOK="${__HOOK}"
PREFERRED_CHAIN="${__PREFERRED_CHAIN}"
WELLKNOWN="${__WELLKNOWN}"
HOOK_CHAIN="${__HOOK_CHAIN}"
OPENSSL_CNF="${__OPENSSL_CNF}"
RENEW_DAYS="${__RENEW_DAYS}"
IP_VERSION="${__IP_VERSION}"
}
hookscript_bricker_hook() {
# Hook scripts should ignore any hooks they don't know.
# Calling a random hook to make this clear to the hook script authors...
if [[ -n "${HOOK}" ]]; then
"${HOOK}" "this_hookscript_is_broken__dehydrated_is_working_fine__please_ignore_unknown_hooks_in_your_script" || _exiterr "Please check your hook script, it should exit cleanly without doing anything on unknown/new hooks."
fi
}
# verify configuration values
verify_config() {
[[ "${CHALLENGETYPE}" == "http-01" || "${CHALLENGETYPE}" == "dns-01" || "${CHALLENGETYPE}" == "tls-alpn-01" ]] || _exiterr "Unknown challenge type ${CHALLENGETYPE}... cannot continue."
if [[ "${CHALLENGETYPE}" = "dns-01" ]] && [[ -z "${HOOK}" ]]; then
_exiterr "Challenge type dns-01 needs a hook script for deployment... cannot continue."
fi
if [[ "${CHALLENGETYPE}" = "http-01" && ! -d "${WELLKNOWN}" && ! "${COMMAND:-}" = "register" ]]; then
_exiterr "WELLKNOWN directory doesn't exist, please create ${WELLKNOWN} and set appropriate permissions."
fi
[[ "${KEY_ALGO}" == "rsa" || "${KEY_ALGO}" == "prime256v1" || "${KEY_ALGO}" == "secp384r1" || "${KEY_ALGO}" == "secp521r1" ]] || _exiterr "Unknown public key algorithm ${KEY_ALGO}... cannot continue."
if [[ -n "${IP_VERSION}" ]]; then
[[ "${IP_VERSION}" = "4" || "${IP_VERSION}" = "6" ]] || _exiterr "Unknown IP version ${IP_VERSION}... cannot continue."
fi
[[ "${API}" == "auto" || "${API}" == "1" || "${API}" == "2" ]] || _exiterr "Unsupported API version defined in config: ${API}"
[[ "${OCSP_DAYS}" =~ ^[0-9]+$ ]] || _exiterr "OCSP_DAYS must be a number"
}
# Setup default config values, search for and load configuration files
load_config() {
# Check for config in various locations
if [[ -z "${CONFIG:-}" ]]; then
for check_config in "/etc/dehydrated" "/usr/local/etc/dehydrated" "${PWD}" "${SCRIPTDIR}"; do
if [[ -f "${check_config}/config" ]]; then
BASEDIR="${check_config}"
CONFIG="${check_config}/config"
break
fi
done
fi
# Preset
CA_ZEROSSL="https://acme.zerossl.com/v2/DV90"
CA_LETSENCRYPT="https://acme-v02.api.letsencrypt.org/directory"
CA_LETSENCRYPT_TEST="https://acme-staging-v02.api.letsencrypt.org/directory"
CA_BUYPASS="https://api.buypass.com/acme/directory"
CA_BUYPASS_TEST="https://api.test4.buypass.no/acme/directory"
# Default values
CA="letsencrypt"
OLDCA=
CERTDIR=
ALPNCERTDIR=
ACCOUNTDIR=
ACCOUNT_KEYSIZE="4096"
ACCOUNT_KEY_ALGO=rsa
CHALLENGETYPE="http-01"
CONFIG_D=
CURL_OPTS=
DOMAINS_D=
DOMAINS_TXT=
HOOK=
PREFERRED_CHAIN=
HOOK_CHAIN="no"
RENEW_DAYS="30"
KEYSIZE="4096"
WELLKNOWN=
PRIVATE_KEY_RENEW="yes"
PRIVATE_KEY_ROLLOVER="no"
KEY_ALGO=secp384r1
OPENSSL=openssl
OPENSSL_CNF=
CONTACT_EMAIL=
LOCKFILE=
OCSP_MUST_STAPLE="no"
OCSP_FETCH="no"
OCSP_DAYS=5
IP_VERSION=
CHAINCACHE=
AUTO_CLEANUP="no"
DEHYDRATED_USER=
DEHYDRATED_GROUP=
API="auto"
if [[ -z "${CONFIG:-}" ]]; then
echo "#" >&2
echo "# !! WARNING !! No main config file found, using default config!" >&2
echo "#" >&2
elif [[ -f "${CONFIG}" ]]; then
echo "# INFO: Using main config file ${CONFIG}"
BASEDIR="$(dirname "${CONFIG}")"
# shellcheck disable=SC1090
. "${CONFIG}"
else
_exiterr "Specified config file doesn't exist."
fi
if [[ -n "${CONFIG_D}" ]]; then
if [[ ! -d "${CONFIG_D}" ]]; then
_exiterr "The path ${CONFIG_D} specified for CONFIG_D does not point to a directory."
fi
# Allow globbing
noglob_set
for check_config_d in "${CONFIG_D}"/*.sh; do
if [[ -f "${check_config_d}" ]] && [[ -r "${check_config_d}" ]]; then
echo "# INFO: Using additional config file ${check_config_d}"
# shellcheck disable=SC1090
. "${check_config_d}"
else
_exiterr "Specified additional config ${check_config_d} is not readable or not a file at all."
fi
done
# Disable globbing
noglob_clear
fi
# Check for missing dependencies
check_dependencies
has_sudo() {
command -v sudo > /dev/null 2>&1 || _exiterr "DEHYDRATED_USER set but sudo not available. Please install sudo."
}
# Check if we are running & are allowed to run as root
if [[ -n "$DEHYDRATED_USER" ]]; then
command -v getent > /dev/null 2>&1 || _exiterr "DEHYDRATED_USER set but getent not available. Please install getent."
TARGET_UID="$(getent passwd "${DEHYDRATED_USER}" | cut -d':' -f3)" || _exiterr "DEHYDRATED_USER ${DEHYDRATED_USER} is invalid"
if [[ -z "${DEHYDRATED_GROUP}" ]]; then
if [[ "${EUID}" != "${TARGET_UID}" ]]; then
echo "# INFO: Running $0 as ${DEHYDRATED_USER}"
has_sudo && exec sudo -u "${DEHYDRATED_USER}" "${0}" "${ORIGARGS[@]}"
fi
else
TARGET_GID="$(getent group "${DEHYDRATED_GROUP}" | cut -d':' -f3)" || _exiterr "DEHYDRATED_GROUP ${DEHYDRATED_GROUP} is invalid"
if [[ -z "${EGID:-}" ]]; then
command -v id > /dev/null 2>&1 || _exiterr "DEHYDRATED_GROUP set, don't know current gid and 'id' not available... Please provide 'id' binary."
EGID="$(id -g)"
fi
if [[ "${EUID}" != "${TARGET_UID}" ]] || [[ "${EGID}" != "${TARGET_GID}" ]]; then
echo "# INFO: Running $0 as ${DEHYDRATED_USER}/${DEHYDRATED_GROUP}"
has_sudo && exec sudo -u "${DEHYDRATED_USER}" -g "${DEHYDRATED_GROUP}" "${0}" "${ORIGARGS[@]}"
fi
fi
elif [[ -n "${DEHYDRATED_GROUP}" ]]; then
_exiterr "DEHYDRATED_GROUP can only be used in combination with DEHYDRATED_USER."
fi
# Remove slash from end of BASEDIR. Mostly for cleaner outputs, doesn't change functionality.
[[ "$BASEDIR" != "/" ]] && BASEDIR="${BASEDIR%%/}"
# Check BASEDIR and set default variables
[[ -d "${BASEDIR}" ]] || _exiterr "BASEDIR does not exist: ${BASEDIR}"
# Check for ca cli parameter
if [ -n "${PARAM_CA:-}" ]; then
CA="${PARAM_CA}"
fi
# Preset CAs
if [ "${CA}" = "letsencrypt" ]; then
CA="${CA_LETSENCRYPT}"
elif [ "${CA}" = "letsencrypt-test" ]; then
CA="${CA_LETSENCRYPT_TEST}"
elif [ "${CA}" = "zerossl" ]; then
CA="${CA_ZEROSSL}"
elif [ "${CA}" = "buypass" ]; then
CA="${CA_BUYPASS}"
elif [ "${CA}" = "buypass-test" ]; then
CA="${CA_BUYPASS_TEST}"
fi
if [[ -z "${OLDCA}" ]] && [[ "${CA}" = "https://acme-v02.api.letsencrypt.org/directory" ]]; then
OLDCA="https://acme-v01.api.letsencrypt.org/directory"
fi
# Create new account directory or symlink to account directory from old CA
# dev note: keep in mind that because of the use of 'echo' instead of 'printf' or
# similar there is a newline encoded in the directory name. not going to fix this
# since it's a non-issue and trying to fix existing installations would be too much
# trouble
CAHASH="$(echo "${CA}" | urlbase64)"
[[ -z "${ACCOUNTDIR}" ]] && ACCOUNTDIR="${BASEDIR}/accounts"
if [[ ! -e "${ACCOUNTDIR}/${CAHASH}" ]]; then
OLDCAHASH="$(echo "${OLDCA}" | urlbase64)"
mkdir -p "${ACCOUNTDIR}"
if [[ -n "${OLDCA}" ]] && [[ -e "${ACCOUNTDIR}/${OLDCAHASH}" ]]; then
echo "! Reusing account from ${OLDCA}"
ln -s "${OLDCAHASH}" "${ACCOUNTDIR}/${CAHASH}"
else
mkdir "${ACCOUNTDIR}/${CAHASH}"
fi
fi
# shellcheck disable=SC1090
[[ -f "${ACCOUNTDIR}/${CAHASH}/config" ]] && . "${ACCOUNTDIR}/${CAHASH}/config"
ACCOUNT_KEY="${ACCOUNTDIR}/${CAHASH}/account_key.pem"
ACCOUNT_KEY_JSON="${ACCOUNTDIR}/${CAHASH}/registration_info.json"
ACCOUNT_ID_JSON="${ACCOUNTDIR}/${CAHASH}/account_id.json"
ACCOUNT_DEACTIVATED="${ACCOUNTDIR}/${CAHASH}/deactivated"
if [[ -f "${ACCOUNT_DEACTIVATED}" ]]; then
_exiterr "Account has been deactivated. Remove account and create a new one using --register."
fi
if [[ -f "${BASEDIR}/private_key.pem" ]] && [[ ! -f "${ACCOUNT_KEY}" ]]; then
echo "! Moving private_key.pem to ${ACCOUNT_KEY}"
mv "${BASEDIR}/private_key.pem" "${ACCOUNT_KEY}"
fi
if [[ -f "${BASEDIR}/private_key.json" ]] && [[ ! -f "${ACCOUNT_KEY_JSON}" ]]; then
echo "! Moving private_key.json to ${ACCOUNT_KEY_JSON}"
mv "${BASEDIR}/private_key.json" "${ACCOUNT_KEY_JSON}"
fi
[[ -z "${CERTDIR}" ]] && CERTDIR="${BASEDIR}/certs"
[[ -z "${ALPNCERTDIR}" ]] && ALPNCERTDIR="${BASEDIR}/alpn-certs"
[[ -z "${CHAINCACHE}" ]] && CHAINCACHE="${BASEDIR}/chains"
[[ -z "${DOMAINS_TXT}" ]] && DOMAINS_TXT="${BASEDIR}/domains.txt"
[[ -z "${WELLKNOWN}" ]] && WELLKNOWN="/var/www/dehydrated"
[[ -z "${LOCKFILE}" ]] && LOCKFILE="${BASEDIR}/lock"
[[ -z "${OPENSSL_CNF}" ]] && OPENSSL_CNF="$("${OPENSSL}" version -d | cut -d\" -f2)/openssl.cnf"
[[ -n "${PARAM_LOCKFILE_SUFFIX:-}" ]] && LOCKFILE="${LOCKFILE}-${PARAM_LOCKFILE_SUFFIX}"
[[ -n "${PARAM_NO_LOCK:-}" ]] && LOCKFILE=""
[[ -n "${PARAM_HOOK:-}" ]] && HOOK="${PARAM_HOOK}"
[[ -n "${PARAM_DOMAINS_TXT:-}" ]] && DOMAINS_TXT="${PARAM_DOMAINS_TXT}"
[[ -n "${PARAM_PREFERRED_CHAIN:-}" ]] && PREFERRED_CHAIN="${PARAM_PREFERRED_CHAIN}"
[[ -n "${PARAM_CERTDIR:-}" ]] && CERTDIR="${PARAM_CERTDIR}"
[[ -n "${PARAM_ALPNCERTDIR:-}" ]] && ALPNCERTDIR="${PARAM_ALPNCERTDIR}"
[[ -n "${PARAM_CHALLENGETYPE:-}" ]] && CHALLENGETYPE="${PARAM_CHALLENGETYPE}"
[[ -n "${PARAM_KEY_ALGO:-}" ]] && KEY_ALGO="${PARAM_KEY_ALGO}"
[[ -n "${PARAM_OCSP_MUST_STAPLE:-}" ]] && OCSP_MUST_STAPLE="${PARAM_OCSP_MUST_STAPLE}"
[[ -n "${PARAM_IP_VERSION:-}" ]] && IP_VERSION="${PARAM_IP_VERSION}"
if [ "${PARAM_FORCE_VALIDATION:-no}" = "yes" ] && [ "${PARAM_FORCE:-no}" = "no" ]; then
_exiterr "Argument --force-validation can only be used in combination with --force (-x)"
fi
if [ ! "${1:-}" = "noverify" ]; then
verify_config
fi
store_configvars
}
# Initialize system
init_system() {
load_config
# Lockfile handling (prevents concurrent access)
if [[ -n "${LOCKFILE}" ]]; then
LOCKDIR="$(dirname "${LOCKFILE}")"
[[ -w "${LOCKDIR}" ]] || _exiterr "Directory ${LOCKDIR} for LOCKFILE ${LOCKFILE} is not writable, aborting."
( set -C; date > "${LOCKFILE}" ) 2>/dev/null || _exiterr "Lock file '${LOCKFILE}' present, aborting."
remove_lock() { rm -f "${LOCKFILE}"; }
trap 'remove_lock' EXIT
fi
# Get CA URLs
CA_DIRECTORY="$(http_request get "${CA}" | jsonsh)"
# Automatic discovery of API version
if [[ "${API}" = "auto" ]]; then
grep -q newOrder <<< "${CA_DIRECTORY}" && API=2 || API=1
fi
# shellcheck disable=SC2015
if [[ "${API}" = "1" ]]; then
CA_NEW_CERT="$(printf "%s" "${CA_DIRECTORY}" | get_json_string_value new-cert)" &&
CA_NEW_AUTHZ="$(printf "%s" "${CA_DIRECTORY}" | get_json_string_value new-authz)" &&
CA_NEW_REG="$(printf "%s" "${CA_DIRECTORY}" | get_json_string_value new-reg)" &&
CA_TERMS="$(printf "%s" "${CA_DIRECTORY}" | get_json_string_value terms-of-service)" &&
CA_REQUIRES_EAB="false" &&
CA_REVOKE_CERT="$(printf "%s" "${CA_DIRECTORY}" | get_json_string_value revoke-cert)" ||
_exiterr "Problem retrieving ACME/CA-URLs, check if your configured CA points to the directory entrypoint."
# Since reg URI is missing from directory we will assume it is the same as CA_NEW_REG without the new part
CA_REG=${CA_NEW_REG/new-reg/reg}
else
CA_NEW_ORDER="$(printf "%s" "${CA_DIRECTORY}" | get_json_string_value newOrder)" &&
CA_NEW_NONCE="$(printf "%s" "${CA_DIRECTORY}" | get_json_string_value newNonce)" &&
CA_NEW_ACCOUNT="$(printf "%s" "${CA_DIRECTORY}" | get_json_string_value newAccount)" &&
CA_TERMS="$(printf "%s" "${CA_DIRECTORY}" | get_json_string_value -p '"meta","termsOfService"')" &&
CA_REQUIRES_EAB="$(printf "%s" "${CA_DIRECTORY}" | get_json_bool_value -p '"meta","externalAccountRequired"' || echo false)" &&
CA_REVOKE_CERT="$(printf "%s" "${CA_DIRECTORY}" | get_json_string_value revokeCert)" ||
_exiterr "Problem retrieving ACME/CA-URLs, check if your configured CA points to the directory entrypoint."
fi
# Export some environment variables to be used in hook script
export WELLKNOWN BASEDIR CERTDIR ALPNCERTDIR CONFIG COMMAND
# Checking for private key ...
register_new_key="no"
generated="false"
if [[ -n "${PARAM_ACCOUNT_KEY:-}" ]]; then
# a private key was specified from the command line so use it for this run
echo "Using private key ${PARAM_ACCOUNT_KEY} instead of account key"
ACCOUNT_KEY="${PARAM_ACCOUNT_KEY}"
ACCOUNT_KEY_JSON="${PARAM_ACCOUNT_KEY}.json"
ACCOUNT_ID_JSON="${PARAM_ACCOUNT_KEY}_id.json"
[ "${COMMAND:-}" = "register" ] && register_new_key="yes"
else
# Check if private account key exists, if it doesn't exist yet generate a new one (rsa key)
if [[ ! -e "${ACCOUNT_KEY}" ]]; then
if [[ ! "${PARAM_ACCEPT_TERMS:-}" = "yes" ]]; then
printf '\n' >&2
printf 'To use dehydrated with this certificate authority you have to agree to their terms of service which you can find here: %s\n\n' "${CA_TERMS}" >&2
printf 'To accept these terms of service run "%s --register --accept-terms".\n' "${0}" >&2
exit 1
fi
echo "+ Generating account key..."
generated="true"
local tmp_account_key
tmp_account_key="$(_mktemp)"
if [[ ${API} -eq 1 && ! "${ACCOUNT_KEY_ALGO}" = "rsa" ]]; then
_exiterr "ACME API version 1 does not support EC account keys"
fi
case "${ACCOUNT_KEY_ALGO}" in
rsa) _openssl genrsa -out "${tmp_account_key}" "${ACCOUNT_KEYSIZE}";;
prime256v1|secp384r1|secp521r1) _openssl ecparam -genkey -name "${ACCOUNT_KEY_ALGO}" -out "${tmp_account_key}" -noout;;
esac
cat "${tmp_account_key}" > "${ACCOUNT_KEY}"
rm "${tmp_account_key}"
register_new_key="yes"
fi
fi
if ("${OPENSSL}" rsa -in "${ACCOUNT_KEY}" -check 2>/dev/null > /dev/null); then
# Get public components from private key and calculate thumbprint
pubExponent64="$(printf '%x' "$("${OPENSSL}" rsa -in "${ACCOUNT_KEY}" -noout -text | awk '/publicExponent/ {print $2}')" | hex2bin | urlbase64)"
pubMod64="$("${OPENSSL}" rsa -in "${ACCOUNT_KEY}" -noout -modulus | cut -d'=' -f2 | hex2bin | urlbase64)"
account_key_info="$(printf '{"e":"%s","kty":"RSA","n":"%s"}' "${pubExponent64}" "${pubMod64}")"
account_key_sigalgo=RS256
elif ("${OPENSSL}" ec -in "${ACCOUNT_KEY}" -check 2>/dev/null > /dev/null); then
curve="$("${OPENSSL}" ec -in "${ACCOUNT_KEY}" -noout -text 2>/dev/null | grep 'NIST CURVE' | cut -d':' -f2 | tr -d ' ')"
pubkey="$("${OPENSSL}" ec -in "${ACCOUNT_KEY}" -noout -text 2>/dev/null | tr -d '\n ' | grep -Eo 'pub:.*ASN1' | _sed -e 's/^pub://' -e 's/ASN1$//' | tr -d ':')"
if [ "${curve}" = "P-256" ]; then
account_key_sigalgo="ES256"
elif [ "${curve}" = "P-384" ]; then
account_key_sigalgo="ES384"
elif [ "${curve}" = "P-521" ]; then
account_key_sigalgo="ES512"
else
_exiterr "Unknown account key curve: ${curve}"
fi
ec_x_offset=2
ec_x_len=$((${#pubkey}/2 - 1))
ec_x="${pubkey:$ec_x_offset:$ec_x_len}"
ec_x64="$(printf "%s" "${ec_x}" | hex2bin | urlbase64)"
ec_y_offset=$((ec_x_offset+ec_x_len))
ec_y_len=$((${#pubkey}-ec_y_offset))
ec_y="${pubkey:$ec_y_offset:$ec_y_len}"
ec_y64="$(printf "%s" "${ec_y}" | hex2bin | urlbase64)"
account_key_info="$(printf '{"crv":"%s","kty":"EC","x":"%s","y":"%s"}' "${curve}" "${ec_x64}" "${ec_y64}")"
else
_exiterr "Account key is not valid, cannot continue."
fi
thumbprint="$(printf '%s' "${account_key_info}" | "${OPENSSL}" dgst -sha256 -binary | urlbase64)"
# If we generated a new private key in the step above we have to register it with the acme-server
if [[ "${register_new_key}" = "yes" ]]; then
echo "+ Registering account key with ACME server..."
FAILED=false
if [[ ${API} -eq 1 && -z "${CA_NEW_REG}" ]] || [[ ${API} -eq 2 && -z "${CA_NEW_ACCOUNT}" ]]; then
echo "Certificate authority doesn't allow registrations."
FAILED=true
fi
# ZeroSSL special sauce
if [[ "${CA}" = "${CA_ZEROSSL}" ]]; then
if [[ -z "${EAB_KID:-}" ]] || [[ -z "${EAB_HMAC_KEY:-}" ]]; then
if [[ -z "${CONTACT_EMAIL}" ]]; then
echo "ZeroSSL requires contact email to be set or EAB_KID/EAB_HMAC_KEY to be manually configured"
FAILED=true
else
zeroapi="$(curl -s "https://api.zerossl.com/acme/eab-credentials-email" -d "email=${CONTACT_EMAIL}" | jsonsh)"
EAB_KID="$(printf "%s" "${zeroapi}" | get_json_string_value eab_kid)"
EAB_HMAC_KEY="$(printf "%s" "${zeroapi}" | get_json_string_value eab_hmac_key)"
if [[ -z "${EAB_KID:-}" ]] || [[ -z "${EAB_HMAC_KEY:-}" ]]; then
echo "Unknown error retrieving ZeroSSL API credentials"
echo "${zeroapi}"
FAILED=true
fi
fi
fi
fi
# Check if external account is required
if [[ "${FAILED}" = "false" ]]; then
if [[ "${CA_REQUIRES_EAB}" = "true" ]]; then
if [[ -z "${EAB_KID:-}" ]] || [[ -z "${EAB_HMAC_KEY:-}" ]]; then
FAILED=true
echo "This CA requires an external account but no EAB_KID/EAB_HMAC_KEY has been configured"
fi
fi
fi
# If an email for the contact has been provided then adding it to the registration request
if [[ "${FAILED}" = "false" ]]; then
if [[ ${API} -eq 1 ]]; then
if [[ -n "${CONTACT_EMAIL}" ]]; then
(signed_request "${CA_NEW_REG}" '{"resource": "new-reg", "contact":["mailto:'"${CONTACT_EMAIL}"'"], "agreement": "'"${CA_TERMS}"'"}' > "${ACCOUNT_KEY_JSON}") || FAILED=true
else
(signed_request "${CA_NEW_REG}" '{"resource": "new-reg", "agreement": "'"${CA_TERMS}"'"}' > "${ACCOUNT_KEY_JSON}") || FAILED=true
fi
else
if [[ -n "${EAB_KID:-}" ]] && [[ -n "${EAB_HMAC_KEY:-}" ]]; then
eab_url="${CA_NEW_ACCOUNT}"
eab_protected64="$(printf '{"alg":"HS256","kid":"%s","url":"%s"}' "${EAB_KID}" "${eab_url}" | urlbase64)"
eab_payload64="$(printf "%s" "${account_key_info}" | urlbase64)"
eab_key="$(printf "%s" "${EAB_HMAC_KEY}" | deurlbase64 | bin2hex)"
eab_signed64="$(printf '%s' "${eab_protected64}.${eab_payload64}" | "${OPENSSL}" dgst -binary -sha256 -mac HMAC -macopt "hexkey:${eab_key}" | urlbase64)"
if [[ -n "${CONTACT_EMAIL}" ]]; then
regjson='{"contact":["mailto:'"${CONTACT_EMAIL}"'"], "termsOfServiceAgreed": true, "externalAccountBinding": {"protected": "'"${eab_protected64}"'", "payload": "'"${eab_payload64}"'", "signature": "'"${eab_signed64}"'"}}'
else
regjson='{"termsOfServiceAgreed": true, "externalAccountBinding": {"protected": "'"${eab_protected64}"'", "payload": "'"${eab_payload64}"'", "signature": "'"${eab_signed64}"'"}}'
fi
else
if [[ -n "${CONTACT_EMAIL}" ]]; then
regjson='{"contact":["mailto:'"${CONTACT_EMAIL}"'"], "termsOfServiceAgreed": true}'
else
regjson='{"termsOfServiceAgreed": true}'
fi
fi
(signed_request "${CA_NEW_ACCOUNT}" "${regjson}" > "${ACCOUNT_KEY_JSON}") || FAILED=true
fi
fi
if [[ "${FAILED}" = "true" ]]; then
echo >&2
echo >&2
echo "Error registering account key. See message above for more information." >&2
if [[ "${generated}" = "true" ]]; then
rm "${ACCOUNT_KEY}"
fi
rm -f "${ACCOUNT_KEY_JSON}"
exit 1
fi
elif [[ "${COMMAND:-}" = "register" ]]; then
echo "+ Account already registered!"
exit 0
fi
# Read account information or request from CA if missing
if [[ -e "${ACCOUNT_KEY_JSON}" ]]; then
if [[ ${API} -eq 1 ]]; then
ACCOUNT_ID="$(jsonsh < "${ACCOUNT_KEY_JSON}" | get_json_int_value id)"
ACCOUNT_URL="${CA_REG}/${ACCOUNT_ID}"
else
if [[ -e "${ACCOUNT_ID_JSON}" ]]; then
ACCOUNT_URL="$(jsonsh < "${ACCOUNT_ID_JSON}" | get_json_string_value url)"
fi
# if account URL is not storred, fetch it from the CA
if [[ -z "${ACCOUNT_URL:-}" ]]; then
echo "+ Fetching account URL..."
ACCOUNT_URL="$(signed_request "${CA_NEW_ACCOUNT}" '{"onlyReturnExisting": true}' 4>&1 | grep -i ^Location: | cut -d':' -f2- | tr -d ' \t\r\n')"
if [[ -z "${ACCOUNT_URL}" ]]; then
_exiterr "Unknown error on fetching account information"
fi
echo '{"url":"'"${ACCOUNT_URL}"'"}' > "${ACCOUNT_ID_JSON}" # store the URL for next time
fi
fi
else
echo "Fetching missing account information from CA..."
if [[ ${API} -eq 1 ]]; then
_exiterr "This is not implemented for ACMEv1! Consider switching to ACMEv2 :)"
else
ACCOUNT_URL="$(signed_request "${CA_NEW_ACCOUNT}" '{"onlyReturnExisting": true}' 4>&1 | grep -i ^Location: | cut -d':' -f2- | tr -d ' \t\r\n')"
ACCOUNT_INFO="$(signed_request "${ACCOUNT_URL}" '{}')"
fi
echo "${ACCOUNT_INFO}" > "${ACCOUNT_KEY_JSON}"
fi
}
# Different sed version for different os types...
_sed() {
if [[ "${OSTYPE}" = "Linux" || "${OSTYPE:0:5}" = "MINGW" ]]; then
sed -r "${@}"
else
sed -E "${@}"
fi
}
# Print error message and exit with error
_exiterr() {
if [ -n "${1:-}" ]; then
echo "ERROR: ${1}" >&2
fi
[[ "${skip_exit_hook:-no}" = "no" ]] && [[ -n "${HOOK:-}" ]] && ("${HOOK}" "exit_hook" "${1:-}" || echo 'exit_hook returned with non-zero exit code!' >&2)
exit 1
}
# Remove newlines and whitespace from json
clean_json() {
tr -d '\r\n' | _sed -e 's/ +/ /g' -e 's/\{ /{/g' -e 's/ \}/}/g' -e 's/\[ /[/g' -e 's/ \]/]/g'
}
# Encode data as url-safe formatted base64
urlbase64() {
# urlbase64: base64 encoded string with '+' replaced with '-' and '/' replaced with '_'
"${OPENSSL}" base64 -e | tr -d '\n\r' | _sed -e 's:=*$::g' -e 'y:+/:-_:'
}
# Decode data from url-safe formatted base64
deurlbase64() {
data="$(cat | tr -d ' \n\r')"
modlen=$((${#data} % 4))
padding=""
if [[ "${modlen}" = "2" ]]; then padding="==";
elif [[ "${modlen}" = "3" ]]; then padding="="; fi
printf "%s%s" "${data}" "${padding}" | tr -d '\n\r' | _sed -e 'y:-_:+/:' | "${OPENSSL}" base64 -d -A
}
# Convert hex string to binary data
hex2bin() {
# Remove spaces, add leading zero, escape as hex string and parse with printf
# shellcheck disable=SC2059
printf "%b" "$(cat | _sed -e 's/[[:space:]]//g' -e 's/^(.(.{2})*)$/0\1/' -e 's/(.{2})/\\x\1/g')"
}
# Convert binary data to hex string
bin2hex() {
hexdump -v -e '/1 "%02x"'
}
# OpenSSL writes to stderr/stdout even when there are no errors. So just
# display the output if the exit code was != 0 to simplify debugging.
_openssl() {
set +e
out="$("${OPENSSL}" "${@}" 2>&1)"
res=$?
set -e
if [[ ${res} -ne 0 ]]; then
echo " + ERROR: failed to run $* (Exitcode: ${res})" >&2
echo >&2
echo "Details:" >&2
echo "${out}" >&2
echo >&2
exit "${res}"
fi
}
# Send http(s) request with specified method
http_request() {
tempcont="$(_mktemp)"
tempheaders="$(_mktemp)"
if [[ -n "${IP_VERSION:-}" ]]; then
ip_version="-${IP_VERSION}"
fi
set +e
# shellcheck disable=SC2086
if [[ "${1}" = "head" ]]; then
statuscode="$(curl ${ip_version:-} ${CURL_OPTS} -A "dehydrated/${VERSION} curl/${CURL_VERSION}" -s -w "%{http_code}" -o "${tempcont}" "${2}" -I)"
curlret="${?}"
touch "${tempheaders}"
elif [[ "${1}" = "get" ]]; then
statuscode="$(curl ${ip_version:-} ${CURL_OPTS} -A "dehydrated/${VERSION} curl/${CURL_VERSION}" -L -s -w "%{http_code}" -o "${tempcont}" -D "${tempheaders}" "${2}")"
curlret="${?}"
elif [[ "${1}" = "post" ]]; then
statuscode="$(curl ${ip_version:-} ${CURL_OPTS} -A "dehydrated/${VERSION} curl/${CURL_VERSION}" -s -w "%{http_code}" -o "${tempcont}" "${2}" -D "${tempheaders}" -H 'Content-Type: application/jose+json' -d "${3}")"
curlret="${?}"
else
set -e
_exiterr "Unknown request method: ${1}"
fi
set -e
if [[ ! "${curlret}" = "0" ]]; then
_exiterr "Problem connecting to server (${1} for ${2}; curl returned with ${curlret})"
fi
if [[ ! "${statuscode:0:1}" = "2" ]]; then
# check for existing registration warning
if [[ "${API}" = "1" ]] && [[ -n "${CA_NEW_REG:-}" ]] && [[ "${2}" = "${CA_NEW_REG:-}" ]] && [[ "${statuscode}" = "409" ]] && grep -q "Registration key is already in use" "${tempcont}"; then
# do nothing
:
# check for already-revoked warning
elif [[ -n "${CA_REVOKE_CERT:-}" ]] && [[ "${2}" = "${CA_REVOKE_CERT:-}" ]] && [[ "${statuscode}" = "409" ]]; then
grep -q "Certificate already revoked" "${tempcont}" && return
else
if grep -q "urn:ietf:params:acme:error:badNonce" "${tempcont}"; then
printf "badnonce %s" "$(grep -Eoi "^replay-nonce:.*$" "${tempheaders}" | sed 's/ //' | cut -d: -f2)"
return 0
fi
echo " + ERROR: An error occurred while sending ${1}-request to ${2} (Status ${statuscode})" >&2
echo >&2
echo "Details:" >&2
cat "${tempheaders}" >&2
cat "${tempcont}" >&2
echo >&2
echo >&2
# An exclusive hook for the {1}-request error might be useful (e.g., for sending an e-mail to admins)
if [[ -n "${HOOK}" ]]; then
errtxt="$(cat "${tempcont}")"
errheaders="$(cat "${tempheaders}")"
"${HOOK}" "request_failure" "${statuscode}" "${errtxt}" "${1}" "${errheaders}" || _exiterr 'request_failure hook returned with non-zero exit code'
fi
rm -f "${tempcont}"
rm -f "${tempheaders}"
# remove temporary domains.txt file if used
[[ "${COMMAND:-}" = "sign_domains" && -n "${PARAM_DOMAIN:-}" && -n "${DOMAINS_TXT:-}" ]] && rm "${DOMAINS_TXT}"
_exiterr
fi
fi
if { true >&4; } 2>/dev/null; then
cat "${tempheaders}" >&4
fi
cat "${tempcont}"
rm -f "${tempcont}"
rm -f "${tempheaders}"
}
# Send signed request
signed_request() {
# Encode payload as urlbase64
payload64="$(printf '%s' "${2}" | urlbase64)"
if [ -n "${3:-}" ]; then
nonce="$(printf "%s" "${3}" | tr -d ' \t\n\r')"
else
# Retrieve nonce from acme-server
if [[ ${API} -eq 1 ]]; then
nonce="$(http_request head "${CA}" | grep -i ^Replay-Nonce: | cut -d':' -f2- | tr -d ' \t\n\r')"
else
nonce="$(http_request head "${CA_NEW_NONCE}" | grep -i ^Replay-Nonce: | cut -d':' -f2- | tr -d ' \t\n\r')"
fi
fi
if [[ ${API} -eq 1 ]]; then
# Build another header which also contains the previously received nonce and encode it as urlbase64
protected='{"alg": "RS256", "jwk": {"e": "'"${pubExponent64}"'", "kty": "RSA", "n": "'"${pubMod64}"'"}, "nonce": "'"${nonce}"'"}'
protected64="$(printf '%s' "${protected}" | urlbase64)"
else
# Build another header which also contains the previously received nonce and url and encode it as urlbase64
if [[ -n "${ACCOUNT_URL:-}" ]]; then
protected='{"alg": "'"${account_key_sigalgo}"'", "kid": "'"${ACCOUNT_URL}"'", "url": "'"${1}"'", "nonce": "'"${nonce}"'"}'
else
protected='{"alg": "'"${account_key_sigalgo}"'", "jwk": '"${account_key_info}"', "url": "'"${1}"'", "nonce": "'"${nonce}"'"}'
fi
protected64="$(printf '%s' "${protected}" | urlbase64)"
fi
# Sign header with nonce and our payload with our private key and encode signature as urlbase64
if [[ "${account_key_sigalgo}" = "RS256" ]]; then
signed64="$(printf '%s' "${protected64}.${payload64}" | "${OPENSSL}" dgst -sha256 -sign "${ACCOUNT_KEY}" | urlbase64)"
else
dgstparams="$(printf '%s' "${protected64}.${payload64}" | "${OPENSSL}" dgst -sha${account_key_sigalgo:2} -sign "${ACCOUNT_KEY}" | "${OPENSSL}" asn1parse -inform DER)"
dgst_parm_1="$(echo "$dgstparams" | head -n 2 | tail -n 1 | cut -d':' -f4)"
dgst_parm_2="$(echo "$dgstparams" | head -n 3 | tail -n 1 | cut -d':' -f4)"
# zero-padding (doesn't seem to be necessary, but other clients are doing this as well...
case "${account_key_sigalgo}" in
"ES256") siglen=64;;
"ES384") siglen=96;;
"ES512") siglen=132;;
esac
while [[ ${#dgst_parm_1} -lt $siglen ]]; do dgst_parm_1="0${dgst_parm_1}"; done
while [[ ${#dgst_parm_2} -lt $siglen ]]; do dgst_parm_2="0${dgst_parm_2}"; done
signed64="$(printf "%s%s" "${dgst_parm_1}" "${dgst_parm_2}" | hex2bin | urlbase64)"
fi
if [[ ${API} -eq 1 ]]; then
# Build header with just our public key and algorithm information
header='{"alg": "RS256", "jwk": {"e": "'"${pubExponent64}"'", "kty": "RSA", "n": "'"${pubMod64}"'"}}'
# Send header + extended header + payload + signature to the acme-server
data='{"header": '"${header}"', "protected": "'"${protected64}"'", "payload": "'"${payload64}"'", "signature": "'"${signed64}"'"}'
else
# Send extended header + payload + signature to the acme-server
data='{"protected": "'"${protected64}"'", "payload": "'"${payload64}"'", "signature": "'"${signed64}"'"}'
fi
output="$(http_request post "${1}" "${data}")"