Automatically copies Synology's Let's Encrypt certificate files to SickRage so HTTPS/SSL can be enabled

SynoSickRageSSL.sh

#!/bin/sh

# CONFIGURATION

script_folder=/volume1/scripts
# SickRage folder
sickrage_folder=/usr/local/sickbeard-custom/var/SickBeard
# Synology's default Let's Encrypt folder
letsencrypt_cert_folder=/usr/syno/etc/certificate/system/default
# renew timestamp
renew_timestamp=renew_sickrage_timestamp


# DO NOT CHANGE BELOW UNLESS YOU'RE A NINJA

copy_certs=false
current_date=`date +"%s"`
current_certificate_date=`openssl x509 -enddate -noout -in $letsencrypt_cert_folder/cert.pem | cut -d'=' -f2`
current_certificate_timestamp=`date -d "$current_certificate_date" +"%s"`

# check if the renew_timestamp file exists
if [ ! -f $script_folder/$renew_timestamp ]; then
  # create new timestamp file
  echo "Generate timestamp for the current renew date... "
  echo $current_certificate_timestamp > $script_folder/$renew_timestamp
  chmod +rw $script_folder/$renew_timestamp
  chown admin:users $script_folder/$renew_timestamp

  # copy certs to SickRage folder
  copy_certs=true
else
  renew_date=`cat $script_folder/$renew_timestamp`
  # check if it is necessary to renew the certificate or not
  if expr "$current_date" ">" "$renew_date" > /dev/null; then
    echo "Certificate has been renewed..."
    copy_certs=true
    # update timestamp in the file
    echo $current_certificate_timestamp > $script_folder/$renew_timestamp
  else
    echo "It is not necessary to copy certificate files, abort."
    exit 0
  fi
fi

# copy certs and restart SickRage
if expr "$copy_certs" "=" "true" > /dev/null; then
  echo "Copying certificate files to SickRage folder..."
  cp $letsencrypt_cert_folder/cert.pem $sickrage_folder/server.crt
  cp $letsencrypt_cert_folder/privkey.pem $sickrage_folder/server.key
  chmod +r $sickrage_folder/server*
  chown admin:users $sickrage_folder/server*

  echo "Restarting SickRage..."
  sh /var/packages/sickbeard-custom/scripts/start-stop-status stop
  sh /var/packages/sickbeard-custom/scripts/start-stop-status start
  echo "Done."
fi

1. Copy this script to /volume1/scripts/, or wherever you want (just be sure to update the script with the new location).
2. In Synology DSM, create a task in Task Scheduler (Control Panel -> Task Scheduler -> Create -> Scheduled Task -> User-defined script) that runs this script daily.