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#!/bin/bash
################################################################################
# ACME.sh 3rd party deploy plugin for Synology DSM
################################################################################
# Authors: Brian Hartvigsen (creator), https://github.com/tresni
# Martin Arndt (contributor), https://troublezone.net/
# Updated: 2023-07-03
# Issues: https://github.com/acmesh-official/acme.sh/issues/2727
################################################################################
# Usage:
# - Create temp admin user automatically:
# export SYNO_USE_TEMP_ADMIN=1
# - Or provide your own admin user credential:
# 1. export SYNO_Username="adminUser"
# 2. export SYNO_Password="adminPassword"
# Optional exports (shown values are the defaults):
# - export SYNO_Certificate="" - to replace a specific certificate via description
# - export SYNO_Scheme="http"
# - export SYNO_Hostname="localhost"
# - export SYNO_Port="5000"
# - export SYNO_Create=1 - to allow creating the certificate if it doesn't exist
# - export SYNO_Device_Name="CertRenewal" - required if 2FA-OTP enabled
# - export SYNO_Device_ID="" - required for skipping 2FA-OTP
# 3. acme.sh --deploy --deploy-hook synology_dsm -d example.com
################################################################################
# Dependencies:
# - jq & curl
# - synouser & synogroup (When available and SYNO_USE_TEMP_ADMIN is set)
################################################################################
# Return value:
# 0 means success, otherwise error.
################################################################################
########## Public functions ####################################################
#domain keyfile certfile cafile fullchain
synology_dsm_deploy() {
_cdomain="$1"
_ckey="$2"
_ccert="$3"
_cca="$4"
_debug _cdomain "$_cdomain"
# Get username & password, but don't save until we authenticated successfully
_getdeployconf SYNO_USE_TEMP_ADMIN
_getdeployconf SYNO_Username
_getdeployconf SYNO_Password
_getdeployconf SYNO_Create
_getdeployconf SYNO_DID
_getdeployconf SYNO_TOTP_SECRET
_getdeployconf SYNO_Device_Name
_getdeployconf SYNO_Device_ID
# Prepare temp admin user info if SYNO_USE_TEMP_ADMIN is set
if [ -n "${SYNO_USE_TEMP_ADMIN:-}" ]; then
if ! _exists synouser; then
if ! _exists synogroup; then
_err "Tools are missing for creating temp admin user, please set SYNO_Username & SYNO_Password instead."
return 1
fi
fi
_debug "Setting temp admin user credential..."
SYNO_Username=sc-acmesh-tmp
SYNO_Password=$(head /dev/urandom | tr -dc A-Za-z0-9 | head -c 16)
# Ignore 2FA-OTP settings which won't be needed.
SYNO_Device_Name=
SYNO_Device_ID=
fi
if [ -z "${SYNO_Username:-}" ] || [ -z "${SYNO_Password:-}" ]; then
_err "You must set either SYNO_USE_TEMP_ADMIN, or set both SYNO_Username and SYNO_Password."
return 1
fi
_debug2 SYNO_Username "$SYNO_Username"
_secure_debug2 SYNO_Password "$SYNO_Password"
_debug2 SYNO_Create "$SYNO_Create"
_debug2 SYNO_Device_Name "$SYNO_Device_Name"
_secure_debug2 SYNO_Device_ID "$SYNO_Device_ID"
# Optional scheme, hostname & port for Synology DSM
_getdeployconf SYNO_Scheme
_getdeployconf SYNO_Hostname
_getdeployconf SYNO_Port
# Default values for scheme, hostname & port
# Defaulting to localhost & http, because it's localhost…
[ -n "${SYNO_Scheme}" ] || SYNO_Scheme="http"
[ -n "${SYNO_Hostname}" ] || SYNO_Hostname="localhost"
[ -n "${SYNO_Port}" ] || SYNO_Port="5000"
_savedeployconf SYNO_USE_TEMP_ADMIN "$SYNO_USE_TEMP_ADMIN"
_savedeployconf SYNO_Scheme "$SYNO_Scheme"
_savedeployconf SYNO_Hostname "$SYNO_Hostname"
_savedeployconf SYNO_Port "$SYNO_Port"
_debug2 SYNO_Scheme "$SYNO_Scheme"
_debug2 SYNO_Hostname "$SYNO_Hostname"
_debug2 SYNO_Port "$SYNO_Port"
# Get the certificate description, but don't save it until we verify it's real
_getdeployconf SYNO_Certificate
_debug SYNO_Certificate "${SYNO_Certificate:-}"
# shellcheck disable=SC1003 # We are not trying to escape a single quote
if printf "%s" "$SYNO_Certificate" | grep '\\'; then
_err "Do not use a backslash (\) in your certificate description"
return 1
fi
_base_url="$SYNO_Scheme://$SYNO_Hostname:$SYNO_Port"
_debug _base_url "$_base_url"
_debug "Getting API version"
response=$(_get "$_base_url/webapi/query.cgi?api=SYNO.API.Info&version=1&method=query&query=SYNO.API.Auth")
api_path=$(echo "$response" | grep "SYNO.API.Auth" | sed -n 's/.*"path" *: *"\([^"]*\)".*/\1/p')
api_version=$(echo "$response" | grep "SYNO.API.Auth" | sed -n 's/.*"maxVersion" *: *\([0-9]*\).*/\1/p')
_debug3 response "$response"
_debug3 api_path "$api_path"
_debug3 api_version "$api_version"
# Login, get the session ID & SynoToken from JSON
_info "Logging into $SYNO_Hostname:$SYNO_Port"
encoded_username="$(printf "%s" "$SYNO_Username" | _url_encode)"
encoded_password="$(printf "%s" "$SYNO_Password" | _url_encode)"
otp_code=""
# START - DEPRECATED, only kept for legacy compatibility reasons
if [ -n "$SYNO_TOTP_SECRET" ]; then
_info "WARNING: Usage of SYNO_TOTP_SECRET is deprecated!"
_info " See synology_dsm.sh script or ACME.sh Wiki page for details:"
_info " https://github.com/acmesh-official/acme.sh/wiki/Synology-NAS-Guide"
if ! _exists oathtool; then
_err "oathtool could not be found, install oathtool to use SYNO_TOTP_SECRET"
return 1
fi
DEPRECATED_otp_code="$(oathtool --base32 --totp "${SYNO_TOTP_SECRET}" 2>/dev/null)"
if [ -n "$SYNO_DID" ]; then
_H1="Cookie: did=$SYNO_DID"
export _H1
_debug3 H1 "${_H1}"
fi
response=$(_post "method=login&account=$encoded_username&passwd=$encoded_password&api=SYNO.API.Auth&version=$api_version&enable_syno_token=yes&otp_code=$DEPRECATED_otp_code&device_name=certrenewal&device_id=$SYNO_DID" "$_base_url/webapi/auth.cgi?enable_syno_token=yes")
_debug3 response "$response"
# END - DEPRECATED, only kept for legacy compatibility reasons
# If SYNO_DeviceDevice_ID & SYNO_Device_Name both empty, just log in normally
elif [ -z "${SYNO_Device_ID:-}" ] && [ -z "${SYNO_Device_Name:-}" ]; then
if [ -n "$SYNO_USE_TEMP_ADMIN" ]; then
_debug "Creating temp admin user in Synology DSM"
synouser --del "$SYNO_Username" >/dev/null 2>/dev/null
synouser --add "$SYNO_Username" "$SYNO_Password" "" 0 "" 0 >/dev/null
synogroup --memberadd administrators "$SYNO_Username" >/dev/null
fi
response=$(_get "$_base_url/webapi/entry.cgi?api=SYNO.API.Auth&version=$api_version&method=login&format=sid&account=$encoded_username&passwd=$encoded_password&enable_syno_token=yes")
_debug3 response "$response"
# Get device ID if still empty first, otherwise log in right away
# If SYNO_Device_Name is set, we treat that account enabled two-factor authorization, consider SYNO_Device_ID is not set, so it won't be able to login without requiring the OTP code.
elif [ -n "${SYNO_Device_Name:-}" ] && [ -z "${SYNO_Device_ID:-}" ]; then
printf "Enter OTP code for user '%s': " "$SYNO_Username"
read -r otp_code
response=$(_get "$_base_url/webapi/$api_path?api=SYNO.API.Auth&version=$api_version&method=login&format=sid&account=$encoded_username&passwd=$encoded_password&otp_code=$otp_code&enable_syno_token=yes&enable_device_token=yes&device_name=$SYNO_Device_Name")
_secure_debug3 response "$response"
id_property='device_id'
[ "${api_version}" -gt '6' ] || id_property='did'
SYNO_Device_ID=$(echo "$response" | grep "$id_property" | sed -n 's/.*"'$id_property'" *: *"\([^"]*\).*/\1/p')
_secure_debug2 SYNO_Device_ID "$SYNO_Device_ID"
# Otherwise, if SYNO_Device_ID is set, we can just use it to login.
else
if [ -z "${SYNO_Device_Name:-}" ]; then
printf "Enter device name or leave empty for default (CertRenewal): "
read -r SYNO_Device_Name
[ -n "${SYNO_Device_Name}" ] || SYNO_Device_Name="CertRenewal"
fi
response=$(_get "$_base_url/webapi/$api_path?api=SYNO.API.Auth&version=$api_version&method=login&format=sid&account=$encoded_username&passwd=$encoded_password&enable_syno_token=yes&device_name=$SYNO_Device_Name&device_id=$SYNO_Device_ID")
_secure_debug3 response "$response"
fi
sid=$(echo "$response" | grep "sid" | sed -n 's/.*"sid" *: *"\([^"]*\).*/\1/p')
token=$(echo "$response" | grep "synotoken" | sed -n 's/.*"synotoken" *: *"\([^"]*\).*/\1/p')
_debug "Session ID" "$sid"
_debug SynoToken "$token"
if [ -z "$sid" ] || [ -z "$token" ]; then
_err "Unable to authenticate to $_base_url - check your username & password."
_err "If two-factor authentication is enabled for the user:"
_err "- set SYNO_Device_Name then input *correct* OTP-code manually"
_err "- get & set SYNO_Device_ID via your browser cookies"
_remove_temp_admin "$SYNO_USE_TEMP_ADMIN" "$SYNO_Username"
return 1
fi
_H1="X-SYNO-TOKEN: $token"
export _H1
_debug2 H1 "${_H1}"
# Now that we know the username & password are good, save them
_savedeployconf SYNO_Username "$SYNO_Username"
_savedeployconf SYNO_Password "$SYNO_Password"
if [ -z "${SYNO_USE_TEMP_ADMIN:-}" ]; then
_savedeployconf SYNO_Device_Name "$SYNO_Device_Name"
_savedeployconf SYNO_Device_ID "$SYNO_Device_ID"
fi
_info "Getting certificates in Synology DSM"
response=$(_post "api=SYNO.Core.Certificate.CRT&method=list&version=1&_sid=$sid" "$_base_url/webapi/entry.cgi")
_debug3 response "$response"
escaped_certificate="$(printf "%s" "$SYNO_Certificate" | sed 's/\([].*^$[]\)/\\\1/g;s/"/\\\\"/g')"
_debug escaped_certificate "$escaped_certificate"
id=$(echo "$response" | sed -n "s/.*\"desc\":\"$escaped_certificate\",\"id\":\"\([^\"]*\).*/\1/p")
_debug2 id "$id"
if [ -z "$id" ] && [ -z "${SYNO_Create:-}" ]; then
_err "Unable to find certificate: $SYNO_Certificate & \$SYNO_Create is not set"
_remove_temp_admin "$SYNO_USE_TEMP_ADMIN" "$SYNO_Username"
return 1
fi
# We've verified this certificate description is a thing, so save it
_savedeployconf SYNO_Certificate "$SYNO_Certificate" "base64"
_info "Generate form POST request"
nl="\0015\0012"
delim="--------------------------$(_utc_date | tr -d -- '-: ')"
content="--$delim${nl}Content-Disposition: form-data; name=\"key\"; filename=\"$(basename "$_ckey")\"${nl}Content-Type: application/octet-stream${nl}${nl}$(cat "$_ckey")\0012"
content="$content${nl}--$delim${nl}Content-Disposition: form-data; name=\"cert\"; filename=\"$(basename "$_ccert")\"${nl}Content-Type: application/octet-stream${nl}${nl}$(cat "$_ccert")\0012"
content="$content${nl}--$delim${nl}Content-Disposition: form-data; name=\"inter_cert\"; filename=\"$(basename "$_cca")\"${nl}Content-Type: application/octet-stream${nl}${nl}$(cat "$_cca")\0012"
content="$content${nl}--$delim${nl}Content-Disposition: form-data; name=\"id\"${nl}${nl}$id"
content="$content${nl}--$delim${nl}Content-Disposition: form-data; name=\"desc\"${nl}${nl}${SYNO_Certificate}"
if echo "$response" | sed -n "s/.*\"desc\":\"$escaped_certificate\",\([^{]*\).*/\1/p" | grep -- 'is_default":true' >/dev/null; then
_debug2 default "This is the default certificate"
content="$content${nl}--$delim${nl}Content-Disposition: form-data; name=\"as_default\"${nl}${nl}true"
else
_debug2 default "This is NOT the default certificate"
fi
content="$content${nl}--$delim--${nl}"
content="$(printf "%b_" "$content")"
content="${content%_}" # protect trailing \n
_info "Upload certificate to the Synology DSM"
response=$(_post "$content" "$_base_url/webapi/entry.cgi?api=SYNO.Core.Certificate&method=import&version=1&SynoToken=$token&_sid=$sid" "" "POST" "multipart/form-data; boundary=${delim}")
_debug3 response "$response"
if ! echo "$response" | grep '"error":' >/dev/null; then
if echo "$response" | grep '"restart_httpd":true' >/dev/null; then
_info "Restarting HTTP services succeeded"
else
_info "Restarting HTTP services failed"
fi
_remove_temp_admin "$SYNO_USE_TEMP_ADMIN" "$SYNO_Username"
_logout
return 0
else
_remove_temp_admin "$SYNO_USE_TEMP_ADMIN" "$SYNO_Username"
_err "Unable to update certificate, error code $response"
_logout
return 1
fi
}
#################### Private functions below ##################################
_logout() {
# Logout CERT user only to not occupy a permanent session, e.g. in DSM's "Connected Users" widget (based on previous variables)
response=$(_get "$_base_url/webapi/$api_path?api=SYNO.API.Auth&version=$api_version&method=logout&_sid=$sid")
_debug3 response "$response"
}
_remove_temp_admin() {
flag=$1
username=$2
if [ -n "${flag}" ]; then
_debug "Removing temp admin user in Synology DSM"
synouser --del "$username" >/dev/null
fi
}