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#!/usr/bin/env sh
# Script to deploy certificates to remote server by SSH
# Note that SSH must be able to login to remote host without a password...
# SSH Keys must have been exchanged with the remote host. Validate and
# test that you can login to USER@SERVER from the host running acme.sh before
# using this script.
#
# The following variables exported from environment will be used.
# If not set then values previously saved in domain.conf file are used.
#
# Only a username is required. All others are optional.
#
# The following examples are for QNAP NAS running QTS 4.2
# export ACME_DEPLOY_SSH_CMD="" # defaults to ssh
# export ACME_DEPLOY_SSH_USER="admin" # required
# export ACME_DEPLOY_SSH_SERVER="qnap" # defaults to domain name
# export ACME_DEPLOY_SSH_KEYFILE="/etc/stunnel/stunnel.pem"
# export ACME_DEPLOY_SSH_CERTFILE="/etc/stunnel/stunnel.pem"
# export ACME_DEPLOY_SSH_CAFILE="/etc/stunnel/uca.pem"
# export ACME_DEPLOY_SSH_FULLCHAIN=""
# export ACME_DEPLOY_SSH_REMOTE_CMD="/etc/init.d/stunnel.sh restart"
# export ACME_DEPLOY_SSH_BACKUP="" # yes or no, default to yes
#
######## Public functions #####################
#domain keyfile certfile cafile fullchain
ssh_deploy() {
_cdomain="$1"
_ckey="$2"
_ccert="$3"
_cca="$4"
_cfullchain="$5"
_cmdstr=""
_homedir='~'
_backupprefix="$_homedir/.acme_ssh_deploy/$_cdomain-backup"
_backupdir="$_backupprefix-$(_utc_date | tr ' ' '-')"
if [ -f "$DOMAIN_CONF" ]; then
# shellcheck disable=SC1090
. "$DOMAIN_CONF"
fi
_debug _cdomain "$_cdomain"
_debug _ckey "$_ckey"
_debug _ccert "$_ccert"
_debug _cca "$_cca"
_debug _cfullchain "$_cfullchain"
# USER is required to login by SSH to remote host.
if [ -z "$ACME_DEPLOY_SSH_USER" ]; then
if [ -z "$Le_Deploy_ssh_user" ]; then
_err "ACME_DEPLOY_SSH_USER not defined."
return 1
fi
else
Le_Deploy_ssh_user="$ACME_DEPLOY_SSH_USER"
_savedomainconf Le_Deploy_ssh_user "$Le_Deploy_ssh_user"
fi
# SERVER is optional. If not provided then use _cdomain
if [ -n "$ACME_DEPLOY_SSH_SERVER" ]; then
Le_Deploy_ssh_server="$ACME_DEPLOY_SSH_SERVER"
_savedomainconf Le_Deploy_ssh_server "$Le_Deploy_ssh_server"
elif [ -z "$Le_Deploy_ssh_server" ]; then
Le_Deploy_ssh_server="$_cdomain"
fi
# CMD is optional. If not provided then use ssh
if [ -n "$ACME_DEPLOY_SSH_CMD" ]; then
Le_Deploy_ssh_cmd="$ACME_DEPLOY_SSH_CMD"
_savedomainconf Le_Deploy_ssh_cmd "$Le_Deploy_ssh_cmd"
elif [ -z "$Le_Deploy_ssh_cmd" ]; then
Le_Deploy_ssh_cmd="ssh"
fi
# BACKUP is optional. If not provided then default to yes
if [ "$ACME_DEPLOY_SSH_BACKUP" = "no" ]; then
Le_Deploy_ssh_backup="no"
elif [ -z "$Le_Deploy_ssh_backup" ]; then
Le_Deploy_ssh_backup="yes"
fi
_savedomainconf Le_Deploy_ssh_backup "$Le_Deploy_ssh_backup"
_info "Deploy certificates to remote server $Le_Deploy_ssh_user@$Le_Deploy_ssh_server"
# KEYFILE is optional.
# If provided then private key will be copied to provided filename.
if [ -n "$ACME_DEPLOY_SSH_KEYFILE" ]; then
Le_Deploy_ssh_keyfile="$ACME_DEPLOY_SSH_KEYFILE"
_savedomainconf Le_Deploy_ssh_keyfile "$Le_Deploy_ssh_keyfile"
fi
if [ -n "$Le_Deploy_ssh_keyfile" ]; then
if [ "$Le_Deploy_ssh_backup" = "yes" ]; then
# backup file we are about to overwrite.
_cmdstr="$_cmdstr cp $Le_Deploy_ssh_keyfile $_backupdir >/dev/null;"
fi
# copy new certificate into file.
_cmdstr="$_cmdstr echo \"$(cat "$_ckey")\" > $Le_Deploy_ssh_keyfile;"
_info "will copy private key to remote file $Le_Deploy_ssh_keyfile"
fi
# CERTFILE is optional.
# If provided then private key will be copied or appended to provided filename.
if [ -n "$ACME_DEPLOY_SSH_CERTFILE" ]; then
Le_Deploy_ssh_certfile="$ACME_DEPLOY_SSH_CERTFILE"
_savedomainconf Le_Deploy_ssh_certfile "$Le_Deploy_ssh_certfile"
fi
if [ -n "$Le_Deploy_ssh_certfile" ]; then
_pipe=">"
if [ "$Le_Deploy_ssh_certfile" = "$Le_Deploy_ssh_keyfile" ]; then
# if filename is same as previous file then append.
_pipe=">>"
elif [ "$Le_Deploy_ssh_backup" = "yes" ]; then
# backup file we are about to overwrite.
_cmdstr="$_cmdstr cp $Le_Deploy_ssh_certfile $_backupdir >/dev/null;"
fi
# copy new certificate into file.
_cmdstr="$_cmdstr echo \"$(cat "$_ccert")\" $_pipe $Le_Deploy_ssh_certfile;"
_info "will copy certificate to remote file $Le_Deploy_ssh_certfile"
fi
# CAFILE is optional.
# If provided then CA intermediate certificate will be copied or appended to provided filename.
if [ -n "$ACME_DEPLOY_SSH_CAFILE" ]; then
Le_Deploy_ssh_cafile="$ACME_DEPLOY_SSH_CAFILE"
_savedomainconf Le_Deploy_ssh_cafile "$Le_Deploy_ssh_cafile"
fi
if [ -n "$Le_Deploy_ssh_cafile" ]; then
_pipe=">"
if [ "$Le_Deploy_ssh_cafile" = "$Le_Deploy_ssh_keyfile" ] \
|| [ "$Le_Deploy_ssh_cafile" = "$Le_Deploy_ssh_certfile" ]; then
# if filename is same as previous file then append.
_pipe=">>"
elif [ "$Le_Deploy_ssh_backup" = "yes" ]; then
# backup file we are about to overwrite.
_cmdstr="$_cmdstr cp $Le_Deploy_ssh_cafile $_backupdir >/dev/null;"
fi
# copy new certificate into file.
_cmdstr="$_cmdstr echo \"$(cat "$_cca")\" $_pipe $Le_Deploy_ssh_cafile;"
_info "will copy CA file to remote file $Le_Deploy_ssh_cafile"
fi
# FULLCHAIN is optional.
# If provided then fullchain certificate will be copied or appended to provided filename.
if [ -n "$ACME_DEPLOY_SSH_FULLCHAIN" ]; then
Le_Deploy_ssh_fullchain="$ACME_DEPLOY_SSH_FULLCHAIN"
_savedomainconf Le_Deploy_ssh_fullchain "$Le_Deploy_ssh_fullchain"
fi
if [ -n "$Le_Deploy_ssh_fullchain" ]; then
_pipe=">"
if [ "$Le_Deploy_ssh_fullchain" = "$Le_Deploy_ssh_keyfile" ] \
|| [ "$Le_Deploy_ssh_fullchain" = "$Le_Deploy_ssh_certfile" ] \
|| [ "$Le_Deploy_ssh_fullchain" = "$Le_Deploy_ssh_cafile" ]; then
# if filename is same as previous file then append.
_pipe=">>"
elif [ "$Le_Deploy_ssh_backup" = "yes" ]; then
# backup file we are about to overwrite.
_cmdstr="$_cmdstr cp $Le_Deploy_ssh_fullchain $_backupdir >/dev/null;"
fi
# copy new certificate into file.
_cmdstr="$_cmdstr echo \"$(cat "$_cfullchain")\" $_pipe $Le_Deploy_ssh_fullchain;"
_info "will copy fullchain to remote file $Le_Deploy_ssh_fullchain"
fi
# REMOTE_CMD is optional.
# If provided then this command will be executed on remote host.
if [ -n "$ACME_DEPLOY_SSH_REMOTE_CMD" ]; then
Le_Deploy_ssh_remote_cmd="$ACME_DEPLOY_SSH_REMOTE_CMD"
_savedomainconf Le_Deploy_ssh_remote_cmd "$Le_Deploy_ssh_remote_cmd"
fi
if [ -n "$Le_Deploy_ssh_remote_cmd" ]; then
_cmdstr="$_cmdstr $Le_Deploy_ssh_remote_cmd;"
_info "Will execute remote command $Le_Deploy_ssh_remote_cmd"
fi
if [ -z "$_cmdstr" ]; then
_err "No remote commands to excute. Failed to deploy certificates to remote server"
return 1
elif [ "$Le_Deploy_ssh_backup" = "yes" ]; then
# run cleanup on the backup directory, erase all older
# than 180 days (15552000 seconds).
_cmdstr="{ now=\"\$(date -u +%s)\"; for fn in $_backupprefix*; \
do if [ -d \"\$fn\" ] && [ \"\$(expr \$now - \$(date -ur \$fn +%s) )\" -ge \"15552000\" ]; \
then rm -rf \"\$fn\"; echo \"Backup \$fn deleted as older than 180 days\"; fi; done; }; $_cmdstr"
# Alternate version of above... _cmdstr="find $_backupprefix* -type d -mtime +180 2>/dev/null | xargs rm -rf; $_cmdstr"
# Create our backup directory for overwritten cert files.
_cmdstr="mkdir -p $_backupdir; $_cmdstr"
_info "Backup of old certificate files will be placed in remote directory $_backupdir"
_info "Backup directories erased after 180 days."
fi
_debug "Remote commands to execute: $_cmdstr"
_info "Submitting sequence of commands to remote server by ssh"
# quotations in bash cmd below intended. Squash travis spellcheck error
# shellcheck disable=SC2029
$Le_Deploy_ssh_cmd -T "$Le_Deploy_ssh_user@$Le_Deploy_ssh_server" sh -c "'$_cmdstr'"
_ret="$?"
if [ "$_ret" != "0" ]; then
_err "Error code $_ret returned from $Le_Deploy_ssh_cmd"
fi
return $_ret
}