From f354e6de69f66c23b67cc29dd84baac06d2fe5d6 Mon Sep 17 00:00:00 2001
From: Michael Weber <mw@magneticflux.net>
Date: Sat, 6 Feb 2021 08:25:49 +0000
Subject: [PATCH] lighttpd deploy hook

* verbatim copy from haproxy.sh, s/haproxy/lighttpd
* enable issuer
---
 deploy/lighttpd.sh | 275 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 275 insertions(+)
 create mode 100644 deploy/lighttpd.sh

diff --git a/deploy/lighttpd.sh b/deploy/lighttpd.sh
new file mode 100644
index 00000000..c003f455
--- /dev/null
+++ b/deploy/lighttpd.sh
@@ -0,0 +1,275 @@
+#!/usr/bin/env sh
+
+# Script for acme.sh to deploy certificates to lighttpd
+#
+# The following variables can be exported:
+#
+# export DEPLOY_LIGHTTPD_PEM_NAME="${domain}.pem"
+#
+# Defines the name of the PEM file.
+# Defaults to "<domain>.pem"
+#
+# export DEPLOY_LIGHTTPD_PEM_PATH="/etc/lighttpd"
+#
+# Defines location of PEM file for Lighttpd.
+# Defaults to /etc/lighttpd
+#
+# export DEPLOY_LIGHTTPD_RELOAD="systemctl reload lighttpd"
+#
+# OPTIONAL: Reload command used post deploy
+# This defaults to be a no-op (ie "true").
+# It is strongly recommended to set this something that makes sense
+# for your distro.
+#
+# export DEPLOY_LIGHTTPD_ISSUER="yes"
+#
+# OPTIONAL: Places CA file as "${DEPLOY_LIGHTTPD_PEM}.issuer"
+# Note: Required for OCSP stapling to work
+#
+# export DEPLOY_LIGHTTPD_BUNDLE="no"
+#
+# OPTIONAL: Deploy this certificate as part of a multi-cert bundle
+# This adds a suffix to the certificate based on the certificate type
+# eg RSA certificates will have .rsa as a suffix to the file name
+# Lighttpd will load all certificates and provide one or the other
+# depending on client capabilities
+# Note: This functionality requires Lighttpd was compiled against
+# a version of OpenSSL that supports this.
+#
+
+########  Public functions #####################
+
+#domain keyfile certfile cafile fullchain
+lighttpd_deploy() {
+  _cdomain="$1"
+  _ckey="$2"
+  _ccert="$3"
+  _cca="$4"
+  _cfullchain="$5"
+
+  # Some defaults
+  DEPLOY_LIGHTTPD_PEM_PATH_DEFAULT="/etc/lighttpd"
+  DEPLOY_LIGHTTPD_PEM_NAME_DEFAULT="${_cdomain}.pem"
+  DEPLOY_LIGHTTPD_BUNDLE_DEFAULT="no"
+  DEPLOY_LIGHTTPD_ISSUER_DEFAULT="yes"
+  DEPLOY_LIGHTTPD_RELOAD_DEFAULT="true"
+
+  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 "${_cfullchain}"
+
+  # PEM_PATH is optional. If not provided then assume "${DEPLOY_LIGHTTPD_PEM_PATH_DEFAULT}"
+  if [ -n "${DEPLOY_LIGHTTPD_PEM_PATH}" ]; then
+    Le_Deploy_lighttpd_pem_path="${DEPLOY_LIGHTTPD_PEM_PATH}"
+    _savedomainconf Le_Deploy_lighttpd_pem_path "${Le_Deploy_lighttpd_pem_path}"
+  elif [ -z "${Le_Deploy_lighttpd_pem_path}" ]; then
+    Le_Deploy_lighttpd_pem_path="${DEPLOY_LIGHTTPD_PEM_PATH_DEFAULT}"
+  fi
+
+  # Ensure PEM_PATH exists
+  if [ -d "${Le_Deploy_lighttpd_pem_path}" ]; then
+    _debug "PEM_PATH ${Le_Deploy_lighttpd_pem_path} exists"
+  else
+    _err "PEM_PATH ${Le_Deploy_lighttpd_pem_path} does not exist"
+    return 1
+  fi
+
+  # PEM_NAME is optional. If not provided then assume "${DEPLOY_LIGHTTPD_PEM_NAME_DEFAULT}"
+  if [ -n "${DEPLOY_LIGHTTPD_PEM_NAME}" ]; then
+    Le_Deploy_lighttpd_pem_name="${DEPLOY_LIGHTTPD_PEM_NAME}"
+    _savedomainconf Le_Deploy_lighttpd_pem_name "${Le_Deploy_lighttpd_pem_name}"
+  elif [ -z "${Le_Deploy_lighttpd_pem_name}" ]; then
+    Le_Deploy_lighttpd_pem_name="${DEPLOY_LIGHTTPD_PEM_NAME_DEFAULT}"
+  fi
+
+  # BUNDLE is optional. If not provided then assume "${DEPLOY_LIGHTTPD_BUNDLE_DEFAULT}"
+  if [ -n "${DEPLOY_LIGHTTPD_BUNDLE}" ]; then
+    Le_Deploy_lighttpd_bundle="${DEPLOY_LIGHTTPD_BUNDLE}"
+    _savedomainconf Le_Deploy_lighttpd_bundle "${Le_Deploy_lighttpd_bundle}"
+  elif [ -z "${Le_Deploy_lighttpd_bundle}" ]; then
+    Le_Deploy_lighttpd_bundle="${DEPLOY_LIGHTTPD_BUNDLE_DEFAULT}"
+  fi
+
+  # ISSUER is optional. If not provided then assume "${DEPLOY_LIGHTTPD_ISSUER_DEFAULT}"
+  if [ -n "${DEPLOY_LIGHTTPD_ISSUER}" ]; then
+    Le_Deploy_lighttpd_issuer="${DEPLOY_LIGHTTPD_ISSUER}"
+    _savedomainconf Le_Deploy_lighttpd_issuer "${Le_Deploy_lighttpd_issuer}"
+  elif [ -z "${Le_Deploy_lighttpd_issuer}" ]; then
+    Le_Deploy_lighttpd_issuer="${DEPLOY_LIGHTTPD_ISSUER_DEFAULT}"
+  fi
+
+  # RELOAD is optional. If not provided then assume "${DEPLOY_LIGHTTPD_RELOAD_DEFAULT}"
+  if [ -n "${DEPLOY_LIGHTTPD_RELOAD}" ]; then
+    Le_Deploy_lighttpd_reload="${DEPLOY_LIGHTTPD_RELOAD}"
+    _savedomainconf Le_Deploy_lighttpd_reload "${Le_Deploy_lighttpd_reload}"
+  elif [ -z "${Le_Deploy_lighttpd_reload}" ]; then
+    Le_Deploy_lighttpd_reload="${DEPLOY_LIGHTTPD_RELOAD_DEFAULT}"
+  fi
+
+  # Set the suffix depending if we are creating a bundle or not
+  if [ "${Le_Deploy_lighttpd_bundle}" = "yes" ]; then
+    _info "Bundle creation requested"
+    # Initialise $Le_Keylength if its not already set
+    if [ -z "${Le_Keylength}" ]; then
+      Le_Keylength=""
+    fi
+    if _isEccKey "${Le_Keylength}"; then
+      _info "ECC key type detected"
+      _suffix=".ecdsa"
+    else
+      _info "RSA key type detected"
+      _suffix=".rsa"
+    fi
+  else
+    _suffix=""
+  fi
+  _debug _suffix "${_suffix}"
+
+  # Set variables for later
+  _pem="${Le_Deploy_lighttpd_pem_path}/${Le_Deploy_lighttpd_pem_name}${_suffix}"
+  _issuer="${_pem}.issuer"
+  _ocsp="${_pem}.ocsp"
+  _reload="${Le_Deploy_lighttpd_reload}"
+
+  _info "Deploying PEM file"
+  # Create a temporary PEM file
+  _temppem="$(_mktemp)"
+  _debug _temppem "${_temppem}"
+  cat "${_ckey}" "${_ccert}" "${_cca}" >"${_temppem}"
+  _ret="$?"
+
+  # Check that we could create the temporary file
+  if [ "${_ret}" != "0" ]; then
+    _err "Error code ${_ret} returned during PEM file creation"
+    [ -f "${_temppem}" ] && rm -f "${_temppem}"
+    return ${_ret}
+  fi
+
+  # Move PEM file into place
+  _info "Moving new certificate into place"
+  _debug _pem "${_pem}"
+  cat "${_temppem}" >"${_pem}"
+  _ret=$?
+
+  # Clean up temp file
+  [ -f "${_temppem}" ] && rm -f "${_temppem}"
+
+  # Deal with any failure of moving PEM file into place
+  if [ "${_ret}" != "0" ]; then
+    _err "Error code ${_ret} returned while moving new certificate into place"
+    return ${_ret}
+  fi
+
+  # Update .issuer file if requested
+  if [ "${Le_Deploy_lighttpd_issuer}" = "yes" ]; then
+    _info "Updating .issuer file"
+    _debug _issuer "${_issuer}"
+    cat "${_cca}" >"${_issuer}"
+    _ret="$?"
+
+    if [ "${_ret}" != "0" ]; then
+      _err "Error code ${_ret} returned while copying issuer/CA certificate into place"
+      return ${_ret}
+    fi
+  else
+    [ -f "${_issuer}" ] && _err "Issuer file update not requested but .issuer file exists"
+  fi
+
+  # Update .ocsp file if certificate was requested with --ocsp/--ocsp-must-staple option
+  if [ -z "${Le_OCSP_Staple}" ]; then
+    Le_OCSP_Staple="0"
+  fi
+  if [ "${Le_OCSP_Staple}" = "1" ]; then
+    _info "Updating OCSP stapling info"
+    _debug _ocsp "${_ocsp}"
+    _info "Extracting OCSP URL"
+    _ocsp_url=$(openssl x509 -noout -ocsp_uri -in "${_pem}")
+    _debug _ocsp_url "${_ocsp_url}"
+
+    # Only process OCSP if URL was present
+    if [ "${_ocsp_url}" != "" ]; then
+      # Extract the hostname from the OCSP URL
+      _info "Extracting OCSP URL"
+      _ocsp_host=$(echo "${_ocsp_url}" | cut -d/ -f3)
+      _debug _ocsp_host "${_ocsp_host}"
+
+      # Only process the certificate if we have a .issuer file
+      if [ -r "${_issuer}" ]; then
+        # Check if issuer cert is also a root CA cert
+        _subjectdn=$(openssl x509 -in "${_issuer}" -subject -noout | cut -d'/' -f2,3,4,5,6,7,8,9,10)
+        _debug _subjectdn "${_subjectdn}"
+        _issuerdn=$(openssl x509 -in "${_issuer}" -issuer -noout | cut -d'/' -f2,3,4,5,6,7,8,9,10)
+        _debug _issuerdn "${_issuerdn}"
+        _info "Requesting OCSP response"
+        # If the issuer is a CA cert then our command line has "-CAfile" added
+        if [ "${_subjectdn}" = "${_issuerdn}" ]; then
+          _cafile_argument="-CAfile \"${_issuer}\""
+        else
+          _cafile_argument=""
+        fi
+        _debug _cafile_argument "${_cafile_argument}"
+        # if OpenSSL/LibreSSL is v1.1 or above, the format for the -header option has changed
+        _openssl_version=$(openssl version | cut -d' ' -f2)
+        _debug _openssl_version "${_openssl_version}"
+        _openssl_major=$(echo "${_openssl_version}" | cut -d '.' -f1)
+        _openssl_minor=$(echo "${_openssl_version}" | cut -d '.' -f2)
+        if [ "${_openssl_major}" -eq "1" ] && [ "${_openssl_minor}" -ge "1" ] || [ "${_openssl_major}" -ge "2" ]; then
+          _header_sep="="
+        else
+          _header_sep=" "
+        fi
+        # Request the OCSP response from the issuer and store it
+        _openssl_ocsp_cmd="openssl ocsp \
+          -issuer \"${_issuer}\" \
+          -cert \"${_pem}\" \
+          -url \"${_ocsp_url}\" \
+          -header Host${_header_sep}\"${_ocsp_host}\" \
+          -respout \"${_ocsp}\" \
+          -verify_other \"${_issuer}\" \
+          ${_cafile_argument} \
+          | grep -q \"${_pem}: good\""
+        _debug _openssl_ocsp_cmd "${_openssl_ocsp_cmd}"
+        eval "${_openssl_ocsp_cmd}"
+        _ret=$?
+      else
+        # Non fatal: No issuer file was present so no OCSP stapling file created
+        _err "OCSP stapling in use but no .issuer file was present"
+      fi
+    else
+      # Non fatal: No OCSP url was found int the certificate
+      _err "OCSP update requested but no OCSP URL was found in certificate"
+    fi
+
+    # Non fatal: Check return code of openssl command
+    if [ "${_ret}" != "0" ]; then
+      _err "Updating OCSP stapling failed with return code ${_ret}"
+    fi
+  else
+    # An OCSP file was already present but certificate did not have OCSP extension
+    if [ -f "${_ocsp}" ]; then
+      _err "OCSP was not requested but .ocsp file exists."
+      # Could remove the file at this step, although Lighttpd just ignores it in this case
+      # rm -f "${_ocsp}" || _err "Problem removing stale .ocsp file"
+    fi
+  fi
+
+  # Reload Lighttpd
+  _debug _reload "${_reload}"
+  eval "${_reload}"
+  _ret=$?
+  if [ "${_ret}" != "0" ]; then
+    _err "Error code ${_ret} during reload"
+    return ${_ret}
+  else
+    _info "Reload successful"
+  fi
+
+  return 0
+}