freedombone/install-freedombone.sh

#!/bin/bash
#
# .---.                  .              .
# |                      |              |
# |--- .--. .-.  .-.  .-.|  .-. .--.--. |.-.  .-. .--.  .-.
# |    |   (.-' (.-' (   | (   )|  |  | |   )(   )|  | (.-'
# '    '     --'  --'  -' -  -' '  '   -' -'   -' '   -  --'
#
#                    Freedom in the Cloud
#
# This install script is intended for use with Debian Jessie
#
# Please note that the various hashes and download archives
# for systems such as Owncloud and Dokuwiki may need to be updated
#
# License
# =======
#
# Copyright (C) 2014 Bob Mottram <bob@robotics.uk.to>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# Summary
# =======
#
# This script is intended to be run on the target device, which
# is typically a Beaglebone Black.
#
# To be able to run this script you need to get to a condition
# where you have Debian Jessie installed, with at least one
# unprivileged user account and at least one subdomain created on
# https://freedns.afraid.org/. If you're not installing on a
# Beaglebone Black then set the variable INSTALLING_ON_BBB to "no"
#
# Note on dynamic dns
# ===================
#
# I'm not particularly trying to promote freedns.afraid.org
# as a service, it just happens to be a dynamic DNS system which
# provides free (as in beer) accounts, and I'm trying to make the
# process of setting up a working server as trivial as possible.
# Other dynamic DNS systems are available, and if you're using
# something different then comment out the section within
# argument_checks and the call to dynamic_dns_freedns.
#
# Prerequisites
# =============
#
# You will need to initially prepare a microSD card with a Debian
# image on it. This can be done using the initial_setup.sh script.
#
# If you are not using a Beaglebone Black then just prepare the
# target system with a fresh installation of Debian Jessie.
#
# Configuration file
# ==================
# If you don't want to edit this script directly then you can
# create a configuration file called freedombone.cfg, which should
# be in the same directory as install-freedombone.sh.
# Within the configuration file you can specify the main settings
# such as:
#
# INSTALLING_ON_BBB=yes
# SSH_PORT=2222
# MICROBLOG_DOMAIN_NAME=mydomain
# MICROBLOG_FREEDNS_SUBDOMAIN_CODE=[code]
# ...
#
# Note that there are no spaces around the equals.

DOMAIN_NAME=$1
MY_USERNAME=$2
FREEDNS_SUBDOMAIN_CODE=$3
SYSTEM_TYPE=$4

# Are we installing on a Beaglebone Black (BBB) or some other system?
INSTALLING_ON_BBB="yes"

# Version number of this script
VERSION="1.00"

# Different system variants which may be specified within
# the SYSTEM_TYPE option
VARIANT_WRITER="writer"
VARIANT_CLOUD="cloud"
VARIANT_CHAT="chat"
VARIANT_MAILBOX="mailbox"
VARIANT_NONMAILBOX="nonmailbox"
VARIANT_SOCIAL="social"
VARIANT_MEDIA="media"

# An optional configuration file which overrides some of these variables
CONFIGURATION_FILE="freedombone.cfg"

SSH_PORT=2222

# Why use Google as a time source?
# The thinking here is that it's likely to be reliable and fast.
# The ping doesn't reveal any information other than that the server
# is running, and if anyone maliciously alters the time on Google's
# servers then that would certainly be newsworthy and they'd be
# likely to do something about it quickly.
# If you have better time sources then change them here.
TLS_TIME_SOURCE1="google.com"
TLS_TIME_SOURCE2="www.ptb.de"

# kernel specifically tweaked for the Beaglebone Black
KERNEL_VERSION="v3.15.10-bone7"

# Whether or not to use the beaglebone's hardware random number generator
USE_HWRNG="yes"

# Whether this system is being installed within a docker container
INSTALLED_WITHIN_DOCKER="no"

# If you want to run a public mailing list specify its name here.
# There should be no spaces in the name
PUBLIC_MAILING_LIST=
# Optional different domain name for the public mailing list
PUBLIC_MAILING_LIST_DOMAIN_NAME=
# Directory where the public mailing list data is stored
PUBLIC_MAILING_LIST_DIRECTORY="/var/spool/mlmmj"

# If you want to run an encrypted mailing list specify its name here.
# There should be no spaces in the name
PRIVATE_MAILING_LIST=

# Domain name or freedns subdomain for mediagoblin installation
MEDIAGOBLIN_DOMAIN_NAME=
MEDIAGOBLIN_FREEDNS_SUBDOMAIN_CODE=
MEDIAGOBLIN_REPO=""
MEDIAGOBLIN_ADMIN_PASSWORD=

# Domain name or freedns subdomain for microblog installation
MICROBLOG_DOMAIN_NAME=
MICROBLOG_FREEDNS_SUBDOMAIN_CODE=
MICROBLOG_REPO="git://gitorious.org/social/mainline.git"
MICROBLOG_ADMIN_PASSWORD=

# Domain name or redmatrix installation
REDMATRIX_DOMAIN_NAME=
REDMATRIX_FREEDNS_SUBDOMAIN_CODE=
REDMATRIX_REPO="https://github.com/friendica/red.git"
REDMATRIX_ADDONS_REPO="https://github.com/friendica/red-addons.git"
REDMATRIX_ADMIN_PASSWORD=

# Domain name and freedns subdomain for Owncloud installation
OWNCLOUD_DOMAIN_NAME=
OWNCLOUD_FREEDNS_SUBDOMAIN_CODE=
OWNCLOUD_ADMIN_PASSWORD=

# Domain name and freedns subdomain for your wiki
WIKI_DOMAIN_NAME=
WIKI_FREEDNS_SUBDOMAIN_CODE=

# Domain name and freedns subdomain for your blog
FULLBLOG_DOMAIN_NAME=
FULLBLOG_FREEDNS_SUBDOMAIN_CODE=
MY_BLOG_TITLE="My Blog"
MY_BLOG_SUBTITLE="Another Freedombone Blog"

GPG_KEYSERVER="hkp://keys.gnupg.net"

# whether to encrypt all incoming email with your public key
GPG_ENCRYPT_STORED_EMAIL="yes"

# gets set to yes if gpg keys are imported from usb
GPG_KEYS_IMPORTED="no"

# optionally you can provide your exported GPG key pair here
# Note that the private key file will be deleted after use
# If these are unspecified then a new GPG key will be created
MY_GPG_PUBLIC_KEY=
MY_GPG_PRIVATE_KEY=

# optionally specify your public key ID
MY_GPG_PUBLIC_KEY_ID=

# If you have existing mail within a Maildir
# you can specify the directory here and the files
# will be imported
IMPORT_MAILDIR=

# The Debian package repository to use.
DEBIAN_REPO="ftp.us.debian.org"

DEBIAN_VERSION="jessie"

# Directory where source code is downloaded and compiled
INSTALL_DIR=$HOME/build

# device name for an attached usb drive
USB_DRIVE=/dev/sda1

# Location where the USB drive is mounted to
USB_MOUNT=/mnt/usb

# name of a script used to upgrade the system
UPGRADE_SCRIPT_NAME="freedombone-upgrade"

# Name of a script used to create a backup of the system on usb drive
BACKUP_SCRIPT_NAME="backup"

# Name of a script used to restore the system from usb drive
RESTORE_SCRIPT_NAME="restore"

# name of a script used to backup to friends servers
BACKUP_TO_FRIENDS_SCRIPT_NAME="backup2friends"

# name of a script used to restore backed up data from a friend
RESTORE_FROM_FRIEND_SCRIPT_NAME="restorefromfriend"

# passphrase used for automatic backups to friends servers
# this will be automatically generated
BACKUP_TO_FRIENDS_PASSPHRASE=

# memory limit for php in MB
MAX_PHP_MEMORY=64

# default MariaDB password
MARIADB_PASSWORD=

# Directory where XMPP settings are stored
XMPP_DIRECTORY="/var/lib/prosody"

# file containing a list of remote locations to backup to
# Format: [username@friendsdomain//home/username] [ssh_password]
# With the only space character being between the server and the password
FRIENDS_SERVERS_LIST=/home/$MY_USERNAME/backup.list

# list of encryption protocols
SSL_PROTOCOLS="TLSv1 TLSv1.1 TLSv1.2"

# list of ciphers to use.  See bettercrypto.org recommendations
SSL_CIPHERS="EDH+CAMELLIA:EDH+aRSA:EECDH+aRSA+AESGCM:EECDH+aRSA+SHA384:EECDH+aRSA+SHA256:EECDH:+CAMELLIA256:+AES256:+CAMELLIA128:+AES128:+SSLv3:!aNULL:!eNULL:!LOW:!3DES:!MD5:!EXP:!PSK:!DSS:!RC4:!SEED:!ECDSA:CAMELLIA256-SHA:AES256-SHA:CAMELLIA128-SHA:AES128-SHA"

# the default email address
MY_EMAIL_ADDRESS=$MY_USERNAME@$DOMAIN_NAME

# optionally specify your name to appear on the blog
MY_NAME=$DOMAIN_NAME

export DEBIAN_FRONTEND=noninteractive

# File which keeps track of what has already been installed
COMPLETION_FILE=$HOME/freedombone-completed.txt
if [ ! -f $COMPLETION_FILE ]; then
    touch $COMPLETION_FILE
fi

# message if something fails to install
CHECK_MESSAGE="Check your internet connection, /etc/network/interfaces and /etc/resolv.conf, then delete $COMPLETION_FILE, run 'rm -fR /var/lib/apt/lists/* && apt-get update --fix-missing' and run this script again. If hash sum mismatches persist then try setting $DEBIAN_REPO to a different mirror and also change /etc/apt/sources.list."

function show_help {
  echo ''
  echo './install-freedombone.sh [domain] [username] [subdomain code] [system type]'
  echo ''
  echo 'domain'
  echo '------'
  echo 'This is your domain name or freedns subdomain.'
  echo ''
  echo 'username'
  echo '--------'
  echo ''
  echo 'This will be your username on the system. It should be all'
  echo 'lower case and contain no spaces'
  echo ''
  echo 'subdomain code'
  echo '--------------'
  echo 'This is the freedns dynamic DNS code for your subdomain.'
  echo "To find it from https://freedns.afraid.org select 'Dynamic DNS',"
  echo "then 'quick cron example' and copy the code located between "
  echo "'?' and '=='."
  echo ''
  echo 'system type'
  echo '-----------'
  echo 'This can either be blank if you wish to install the full system,'
  echo "or for more specialised variants you can specify '$VARIANT_MAILBOX', '$VARIANT_CLOUD',"
  echo "'$VARIANT_CHAT', '$VARIANT_SOCIAL', '$VARIANT_MEDIA' or '$VARIANT_WRITER'."
  echo "If you wish to install everything except email then use the '$VARIANT_NONMAILBOX' variaint."

}

function argument_checks {
  if [ ! -d /home/$MY_USERNAME ]; then
      echo "There is no user '$MY_USERNAME' on the system. Use 'adduser $MY_USERNAME' to create the user."
      exit 1
  fi
  if [ ! $DOMAIN_NAME ]; then
      show_help
      exit 2
  fi
  if [ ! $MY_USERNAME ]; then
      show_help
      exit 3
  fi
  if [ ! $FREEDNS_SUBDOMAIN_CODE ]; then
      show_help
      exit 4
  fi
  if [ $SYSTEM_TYPE ]; then
      if [[ $SYSTEM_TYPE != $VARIANT_WRITER && $SYSTEM_TYPE != $VARIANT_CLOUD && $SYSTEM_TYPE != $VARIANT_CHAT && $SYSTEM_TYPE != $VARIANT_MAILBOX && $SYSTEM_TYPE != $VARIANT_NONMAILBOX && $SYSTEM_TYPE != $VARIANT_SOCIAL && $SYSTEM_TYPE != $VARIANT_MEDIA ]]; then
          echo "'$SYSTEM_TYPE' is an unrecognised Freedombone variant."
          exit 30
      fi
  fi
}

function read_configuration {
  if [ -f $CONFIGURATION_FILE ]; then
      if grep -q "MY_NAME" $CONFIGURATION_FILE; then
          MY_NAME=$(grep "MY_NAME" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "MY_EMAIL_ADDRESS" $CONFIGURATION_FILE; then
          MY_EMAIL_ADDRESS=$(grep "MY_EMAIL_ADDRESS" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "INSTALLING_ON_BBB" $CONFIGURATION_FILE; then
          INSTALLING_ON_BBB=$(grep "INSTALLING_ON_BBB" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "SSH_PORT" $CONFIGURATION_FILE; then
          SSH_PORT=$(grep "SSH_PORT" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "INSTALLED_WITHIN_DOCKER" $CONFIGURATION_FILE; then
          INSTALLED_WITHIN_DOCKER=$(grep "INSTALLED_WITHIN_DOCKER" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "PUBLIC_MAILING_LIST" $CONFIGURATION_FILE; then
          PUBLIC_MAILING_LIST=$(grep "PUBLIC_MAILING_LIST" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "MICROBLOG_DOMAIN_NAME" $CONFIGURATION_FILE; then
          MICROBLOG_DOMAIN_NAME=$(grep "MICROBLOG_DOMAIN_NAME" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "MICROBLOG_FREEDNS_SUBDOMAIN_CODE" $CONFIGURATION_FILE; then
          MICROBLOG_FREEDNS_SUBDOMAIN_CODE=$(grep "MICROBLOG_FREEDNS_SUBDOMAIN_CODE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "REDMATRIX_DOMAIN_NAME" $CONFIGURATION_FILE; then
          REDMATRIX_DOMAIN_NAME=$(grep "REDMATRIX_DOMAIN_NAME" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "REDMATRIX_FREEDNS_SUBDOMAIN_CODE" $CONFIGURATION_FILE; then
          REDMATRIX_FREEDNS_SUBDOMAIN_CODE=$(grep "REDMATRIX_FREEDNS_SUBDOMAIN_CODE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "OWNCLOUD_DOMAIN_NAME" $CONFIGURATION_FILE; then
          OWNCLOUD_DOMAIN_NAME=$(grep "OWNCLOUD_DOMAIN_NAME" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "OWNCLOUD_FREEDNS_SUBDOMAIN_CODE" $CONFIGURATION_FILE; then
          OWNCLOUD_FREEDNS_SUBDOMAIN_CODE=$(grep "OWNCLOUD_FREEDNS_SUBDOMAIN_CODE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "WIKI_DOMAIN_NAME" $CONFIGURATION_FILE; then
          WIKI_DOMAIN_NAME=$(grep "WIKI_DOMAIN_NAME" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "WIKI_FREEDNS_SUBDOMAIN_CODE" $CONFIGURATION_FILE; then
          WIKI_FREEDNS_SUBDOMAIN_CODE=$(grep "WIKI_FREEDNS_SUBDOMAIN_CODE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "FULLBLOG_DOMAIN_NAME" $CONFIGURATION_FILE; then
          FULLBLOG_DOMAIN_NAME=$(grep "FULLBLOG_DOMAIN_NAME" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "FULLBLOG_FREEDNS_SUBDOMAIN_CODE" $CONFIGURATION_FILE; then
          FULLBLOG_FREEDNS_SUBDOMAIN_CODE=$(grep "FULLBLOG_FREEDNS_SUBDOMAIN_CODE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "MY_BLOG_TITLE" $CONFIGURATION_FILE; then
          MY_BLOG_TITLE=$(grep "MY_BLOG_TITLE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "MY_BLOG_SUBTITLE" $CONFIGURATION_FILE; then
          MY_BLOG_SUBTITLE=$(grep "MY_BLOG_SUBTITLE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "GPG_ENCRYPT_STORED_EMAIL" $CONFIGURATION_FILE; then
          GPG_ENCRYPT_STORED_EMAIL=$(grep "GPG_ENCRYPT_STORED_EMAIL" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "MY_GPG_PUBLIC_KEY" $CONFIGURATION_FILE; then
          MY_GPG_PUBLIC_KEY=$(grep "MY_GPG_PUBLIC_KEY" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "MY_GPG_PRIVATE_KEY" $CONFIGURATION_FILE; then
          MY_GPG_PRIVATE_KEY=$(grep "MY_GPG_PRIVATE_KEY" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "MY_GPG_PUBLIC_KEY_ID" $CONFIGURATION_FILE; then
          MY_GPG_PUBLIC_KEY_ID=$(grep "MY_GPG_PUBLIC_KEY_ID" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "USB_DRIVE" $CONFIGURATION_FILE; then
          USB_DRIVE=$(grep "USB_DRIVE" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "MAX_PHP_MEMORY" $CONFIGURATION_FILE; then
          MAX_PHP_MEMORY=$(grep "MAX_PHP_MEMORY" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "TLS_TIME_SOURCE1" $CONFIGURATION_FILE; then
          TLS_TIME_SOURCE1=$(grep "TLS_TIME_SOURCE1" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
      if grep -q "TLS_TIME_SOURCE2" $CONFIGURATION_FILE; then
          TLS_TIME_SOURCE2=$(grep "TLS_TIME_SOURCE2" $CONFIGURATION_FILE | awk -F '=' '{print $2}')
      fi
  fi
}

function check_hwrng {
  # If hardware random number generation was enabled then make sure that the device exists.
  # if /dev/hwrng is not found then any subsequent cryptographic key generation would
  # suffer from low entropy and might be insecure
  if [ ! -f /etc/default/rng-tools ]; then
      return
  fi
  if [ ! -e /dev/hwrng ]; then
      ls /dev/hw*
      echo 'The hardware random number generator is enabled but could not be detected on'
      echo '/dev/hwrng.  There may be a problem with the installation or the Beaglebone hardware.'
      exit 75
  fi
}

function import_gpg_key_to_root {
  # This is a compromise. backup needs access to things which the user
  # doesn't have access to, but also needs to be able to encrypt as the user
  # Perhaps there is some better way to do this.
  # Maybe there should be a separate backup GPG key.  Discuss.
  if [ ! $MY_GPG_PUBLIC_KEY ]; then
      MY_GPG_PUBLIC_KEY=/tmp/public_key.gpg
  fi

  apt-get -y --force-yes install gnupg

  if [ ! $MY_GPG_PUBLIC_KEY_ID ]; then
      MY_GPG_PUBLIC_KEY_ID=$(su -c "gpg --list-keys $MY_EMAIL_ADDRESS | grep 'pub '" - $MY_USERNAME | awk -F ' ' '{print $2}' | awk -F '/' '{print $2}')
  fi

  # if the above fails because the key has an unexpected email address
  if [ ! $MY_GPG_PUBLIC_KEY_ID ]; then
      # copy the whole keyring from the user
      cp -r /home/$MY_USERNAME/.gnupg /root
      # get the first entry, which we assume to be the imported key
      MY_GPG_PUBLIC_KEY_ID=$(gpg --list-keys | grep "pub " | head -n 1 | awk -F ' ' '{print $2}' | awk -F '/' '{print $2}')
  else
      # make sure that the root user has access to your gpg public key
      if [ $MY_GPG_PUBLIC_KEY_ID ]; then
          su -c "gpg --export-ownertrust > ~/temp_trust.txt" - $MY_USERNAME
          su -c "gpg --output $MY_GPG_PUBLIC_KEY --armor --export $MY_GPG_PUBLIC_KEY_ID" - $MY_USERNAME
          su -c "gpg --output ~/temp_private_key.txt --armor --export-secret-key $MY_GPG_PUBLIC_KEY_ID" - $MY_USERNAME
          gpg --import-ownertrust < /home/$MY_USERNAME/temp_trust.txt
          gpg --import $MY_GPG_PUBLIC_KEY
          gpg --allow-secret-key-import --import /home/$MY_USERNAME/temp_private_key.txt
          shred -zu /home/$MY_USERNAME/temp_private_key.txt
          shred -zu /home/$MY_USERNAME/temp_trust.txt
      fi
  fi
}

function create_backup_script {
  if grep -Fxq "create_backup_script" $COMPLETION_FILE; then
      return
  fi
  apt-get -y --force-yes install duplicity

  import_gpg_key_to_root

  echo '#!/bin/bash' > /usr/bin/$BACKUP_SCRIPT_NAME
  echo '' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo 'GPG_KEY=$1' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo '' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo 'if [ ! $GPG_KEY ]; then' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "  if [ ! $MY_GPG_PUBLIC_KEY_ID ]; then" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo '    echo "You need to specify a GPG key ID with which to create the backup"' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo '    exit 1' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo '  fi' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "  GPG_KEY='$MY_GPG_PUBLIC_KEY_ID'" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo '' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "if [ ! -b $USB_DRIVE ]; then" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo '  echo "Please attach a USB drive"' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo '  exit 1' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo '' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "if [ ! -d $USB_MOUNT ]; then" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "  mkdir $USB_MOUNT" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "  mount $USB_DRIVE $USB_MOUNT" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "if [ ! -d $USB_MOUNT/backup ]; then" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "  mkdir $USB_MOUNT/backup" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo '' >> /usr/bin/$BACKUP_SCRIPT_NAME

  echo '# Put some files into a temporary directory so that they can be easily backed up' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "if [ ! -d /home/$MY_USERNAME/tempfiles ]; then" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "  mkdir /home/$MY_USERNAME/tempfiles" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$BACKUP_SCRIPT_NAME
  if grep -Fxq "install_gnu_social" $COMPLETION_FILE; then
      echo 'echo "Obtaining GNU Social database backup"' >> /usr/bin/$BACKUP_SCRIPT_NAME
      echo "mysqldump --password=$MARIADB_PASSWORD gnusocial > /home/$MY_USERNAME/tempfiles/gnusocial.sql" >> /usr/bin/$BACKUP_SCRIPT_NAME
  fi
  if grep -Fxq "install_redmatrix" $COMPLETION_FILE; then
      echo 'echo "Obtaining Red Matrix database backup"' >> /usr/bin/$BACKUP_SCRIPT_NAME
      echo "mysqldump --password=$MARIADB_PASSWORD redmatrix > /home/$MY_USERNAME/tempfiles/redmatrix.sql" >> /usr/bin/$BACKUP_SCRIPT_NAME
      echo 'echo "Archiving Red Matrix settings"' >> /usr/bin/$BACKUP_SCRIPT_NAME
      echo "tar -czvf /home/$MY_USERNAME/tempfiles/redmatrix.tar.gz /var/www/$REDMATRIX_DOMAIN_NAME/htdocs/.htconfig.php /var/www/$REDMATRIX_DOMAIN_NAME/htdocs/store" >> /usr/bin/$BACKUP_SCRIPT_NAME
  fi
  if grep -Fxq "install_owncloud" $COMPLETION_FILE; then
      echo 'echo "Obtaining Owncloud data backup"' >> /usr/bin/$BACKUP_SCRIPT_NAME
      echo "tar -czvf /home/$MY_USERNAME/tempfiles/owncloud.tar.gz /var/www/$OWNCLOUD_DOMAIN_NAME/htdocs/data/$MY_USERNAME" >> /usr/bin/$BACKUP_SCRIPT_NAME
  fi
  if grep -Fxq "install_wiki" $COMPLETION_FILE; then
      echo 'echo "Obtaining wiki data backup"' >> /usr/bin/$BACKUP_SCRIPT_NAME
      echo "tar -czvf /home/$MY_USERNAME/tempfiles/wiki.tar.gz /var/www/$WIKI_DOMAIN_NAME/htdocs/data" >> /usr/bin/$BACKUP_SCRIPT_NAME
  fi
  if grep -Fxq "install_blog" $COMPLETION_FILE; then
      echo 'echo "Obtaining blog backup"' >> /usr/bin/$BACKUP_SCRIPT_NAME
      echo "tar -czvf /home/$MY_USERNAME/tempfiles/blog.tar.gz /var/www/$FULLBLOG_DOMAIN_NAME/htdocs" >> /usr/bin/$BACKUP_SCRIPT_NAME
  fi
  echo 'echo "Archiving miscellaneous files"' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "tar -czvf /home/$MY_USERNAME/tempfiles/miscfiles.tar.gz /home/$MY_USERNAME/.gnupg /home/$MY_USERNAME/.muttrc /home/$MY_USERNAME/.procmailrc /home/$MY_USERNAME/.ssh /home/$MY_USERNAME/personal" >> /usr/bin/$BACKUP_SCRIPT_NAME

  echo '' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo '# Backup the public mailing list' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "if [ -d $PUBLIC_MAILING_LIST_DIRECTORY ]; then" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo '  echo "Backing up the public mailing list"' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo -n '  duplicity incr --encrypt-key $GPG_KEY --full-if-older-than 4W --exclude-other-filesystems ' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "$PUBLIC_MAILING_LIST_DIRECTORY file://$USB_MOUNT/backup/publicmailinglist" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo '' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo '# Backup xmpp settings' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "if [ -d $XMPP_DIRECTORY ]; then" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo '  echo "Backing up the XMPP settings"' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo -n '  duplicity incr --encrypt-key $GPG_KEY --full-if-older-than 4W --exclude-other-filesystems ' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "$XMPP_DIRECTORY file://$USB_MOUNT/backup/xmpp" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo '' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo '# Backup web content and other stuff' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "if [ -d /home/$MY_USERNAME/tempfiles ]; then" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo '  echo "Backing up web content and miscellaneous files"' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo -n '  duplicity incr --encrypt-key $GPG_KEY --full-if-older-than 4W --exclude-other-filesystems ' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "/home/$MY_USERNAME/tempfiles file://$USB_MOUNT/backup/tempfiles" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo '' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo '# Backup email' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "if [ -d /home/$MY_USERNAME/Maildir ]; then" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo '  echo "Backing up emails"' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo -n '  duplicity incr --encrypt-key $GPG_KEY --full-if-older-than 4W --exclude-other-filesystems ' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "/home/$MY_USERNAME/Maildir file://$USB_MOUNT/backup/Maildir" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo '' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo '# Backup DLNA cache' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "if [ -d /var/cache/minidlna ]; then" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo '  echo "Backing up DLNA cache"' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo -n '  duplicity incr --encrypt-key $GPG_KEY --full-if-older-than 4W --exclude-other-filesystems ' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "/var/cache/minidlna file://$USB_MOUNT/backup/dlna" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$BACKUP_SCRIPT_NAME

  echo 'echo "Cleaning up backup files"' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "if [ -d /home/$MY_USERNAME/Maildir ]; then" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "  duplicity --force cleanup file://$USB_MOUNT/backup/Maildir" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "if [ -d /home/$MY_USERNAME/tempfiles ]; then" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "  duplicity --force cleanup file://$USB_MOUNT/backup/tempfiles" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "if [ -d /var/cache/minidlna ]; then" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "  duplicity --force cleanup file://$USB_MOUNT/backup/dlna" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "if [ -d $XMPP_DIRECTORY ]; then" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "  duplicity --force cleanup file://$USB_MOUNT/backup/xmpp" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "if [ -d $PUBLIC_MAILING_LIST_DIRECTORY ]; then" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "  duplicity --force cleanup file://$USB_MOUNT/backup/publicmailinglist" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$BACKUP_SCRIPT_NAME

  echo 'echo "Removing old backups"' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "if [ -d /home/$MY_USERNAME/Maildir ]; then" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "  duplicity --force remove-all-but-n-full 2 file://$USB_MOUNT/backup/Maildir" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "if [ -d /home/$MY_USERNAME/tempfiles ]; then" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "  duplicity --force remove-all-but-n-full 2 file://$USB_MOUNT/backup/tempfiles" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "if [ -d /var/cache/minidlna ]; then" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "  duplicity --force remove-all-but-n-full 2 file://$USB_MOUNT/backup/dlna" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "if [ -d $XMPP_DIRECTORY ]; then" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "  duplicity --force remove-all-but-n-full 2 file://$USB_MOUNT/backup/xmpp" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "if [ -d $PUBLIC_MAILING_LIST_DIRECTORY ]; then" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "  duplicity --force remove-all-but-n-full 2 file://$USB_MOUNT/backup/publicmailinglist" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$BACKUP_SCRIPT_NAME

  echo '' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo 'sync' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo '# Remove temporary files' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "if [ -d /home/$MY_USERNAME/tempfiles ]; then" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo '  echo "Removing temporary files"' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "  rm -rf /home/$MY_USERNAME/tempfiles" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "umount $USB_MOUNT" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo "rm -rf $USB_MOUNT" >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo 'echo "Backup to USB drive is complete. You can now unplug it."' >> /usr/bin/$BACKUP_SCRIPT_NAME
  echo 'exit 0' >> /usr/bin/$BACKUP_SCRIPT_NAME
  chmod 400 /usr/bin/$BACKUP_SCRIPT_NAME
  chmod +x /usr/bin/$BACKUP_SCRIPT_NAME

  echo 'create_backup_script' >> $COMPLETION_FILE
}

function create_restore_script {
  if grep -Fxq "create_restore_script" $COMPLETION_FILE; then
      return
  fi
  apt-get -y --force-yes install duplicity

  import_gpg_key_to_root

  echo '#!/bin/bash' > /usr/bin/$RESTORE_SCRIPT_NAME
  echo '' >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo 'GPG_KEY=$1' >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo '' >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo 'if [ ! $GPG_KEY ]; then' >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo "  if [ ! $MY_GPG_PUBLIC_KEY_ID ]; then" >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo '    echo "You need to specify a GPG key ID with which to restore from backup"' >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo '    exit 1' >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo '  fi' >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo "  GPG_KEY='$MY_GPG_PUBLIC_KEY_ID'" >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo '' >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo "if [ ! -b $USB_DRIVE ]; then" >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo '  echo "Please attach a USB drive"' >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo '  exit 1' >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo '' >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo "if [ ! -d $USB_MOUNT ]; then" >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo "  mkdir $USB_MOUNT" >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo "  mount $USB_DRIVE $USB_MOUNT" >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo "if [ ! -d $USB_MOUNT/backup ]; then" >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo '  echo "No backup directory found on the USB drive."' >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo '  exit 2' >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo '' >> /usr/bin/$RESTORE_SCRIPT_NAME

  echo "if [ -d $PUBLIC_MAILING_LIST_DIRECTORY ]; then" >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo '  echo "Restoring public mailing list"' >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo "  duplicity --force file://$USB_MOUNT/backup/publicmailinglist $PUBLIC_MAILING_LIST_DIRECTORY" >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$RESTORE_SCRIPT_NAME

  echo "if [ -d $XMPP_DIRECTORY ]; then" >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo '  echo "Restoring XMPP settings"' >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo "  duplicity --force file://$USB_MOUNT/backup/xmpp $XMPP_DIRECTORY" >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$RESTORE_SCRIPT_NAME

  echo "if [ -d /home/$MY_USERNAME/tempfiles ]; then" >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo "  rm -rf /home/$MY_USERNAME/tempfiles/*" >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo 'else' >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo "  mkdir /home/$MY_USERNAME/tempfiles" >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo 'echo "Restoring web content and miscellaneous files"' >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo "duplicity --force file://$USB_MOUNT/backup/tempfiles /home/$MY_USERNAME/tempfiles" >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo "tar -xzvf /home/$MY_USERNAME/tempfiles/miscfiles.tar.gz -C /" >> /usr/bin/$RESTORE_SCRIPT_NAME

  if grep -Fxq "install_gnu_social" $COMPLETION_FILE; then
      echo "if [ -f /home/$MY_USERNAME/tempfiles/gnusocial.sql ]; then" >> /usr/bin/$RESTORE_SCRIPT_NAME
      echo '  echo "Restoring microblog database"' >> /usr/bin/$RESTORE_SCRIPT_NAME
      echo "  mysql -u root --password=$MARIADB_PASSWORD gnusocial -o < /home/$MY_USERNAME/tempfiles/gnusocial.sql" >> /usr/bin/$RESTORE_SCRIPT_NAME
      echo 'fi' >> /usr/bin/$RESTORE_SCRIPT_NAME
  fi

  if grep -Fxq "install_redmatrix" $COMPLETION_FILE; then
      echo "if [ -f /home/$MY_USERNAME/tempfiles/redmatrix.sql ]; then" >> /usr/bin/$RESTORE_SCRIPT_NAME
      echo '  echo "Restoring Red Matrix database"' >> /usr/bin/$RESTORE_SCRIPT_NAME
      echo "  mysql -u root --password=$MARIADB_PASSWORD redmatrix -o < /home/$MY_USERNAME/tempfiles/redmatrix.sql" >> /usr/bin/$RESTORE_SCRIPT_NAME
      echo "  tar -xzvf /home/$MY_USERNAME/tempfiles/redmatrix.tar.gz -C /" >> /usr/bin/$RESTORE_SCRIPT_NAME
      echo 'fi' >> /usr/bin/$RESTORE_SCRIPT_NAME
  fi

  if grep -Fxq "install_owncloud" $COMPLETION_FILE; then
      echo "if [ -f /home/$MY_USERNAME/tempfiles/owncloud.tar.gz ]; then" >> /usr/bin/$RESTORE_SCRIPT_NAME
      echo '  echo "Restoring Owncloud"' >> /usr/bin/$RESTORE_SCRIPT_NAME
      echo "  tar -xzvf /home/$MY_USERNAME/tempfiles/owncloud.tar.gz -C /" >> /usr/bin/$RESTORE_SCRIPT_NAME
      echo '  echo "Restoring owncloud database"' >> /usr/bin/$RESTORE_SCRIPT_NAME
      echo "  mysql -u root --password=$MARIADB_PASSWORD owncloud -o < /home/$MY_USERNAME/tempfiles/owncloud.sql" >> /usr/bin/$RESTORE_SCRIPT_NAME
      echo 'fi' >> /usr/bin/$RESTORE_SCRIPT_NAME
  fi

  if grep -Fxq "install_wiki" $COMPLETION_FILE; then
      echo "if [ -f /home/$MY_USERNAME/tempfiles/wiki.tar.gz ]; then" >> /usr/bin/$RESTORE_SCRIPT_NAME
      echo '  echo "Restoring Wiki"' >> /usr/bin/$RESTORE_SCRIPT_NAME
      echo "  tar -xzvf /home/$MY_USERNAME/tempfiles/wiki.tar.gz -C /" >> /usr/bin/$RESTORE_SCRIPT_NAME
      echo 'fi' >> /usr/bin/$RESTORE_SCRIPT_NAME
  fi

  if grep -Fxq "install_blog" $COMPLETION_FILE; then
      echo "if [ -f /home/$MY_USERNAME/tempfiles/blog.tar.gz ]; then" >> /usr/bin/$RESTORE_SCRIPT_NAME
      echo '  echo "Restoring blog"' >> /usr/bin/$RESTORE_SCRIPT_NAME
      echo "  tar -xzvf /home/$MY_USERNAME/tempfiles/blog.tar.gz -C /" >> /usr/bin/$RESTORE_SCRIPT_NAME
      echo 'fi' >> /usr/bin/$RESTORE_SCRIPT_NAME
  fi

  echo "rm -rf /home/$MY_USERNAME/tempfiles" >> /usr/bin/$RESTORE_SCRIPT_NAME

  echo "if [ -d /home/$MY_USERNAME/Maildir ]; then" >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo '  echo "Restoring emails"' >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo "  duplicity --force file://$USB_MOUNT/backup/Maildir /home/$MY_USERNAME/Maildir" >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$RESTORE_SCRIPT_NAME

  echo "if [ -d /var/cache/minidlna ]; then" >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo '  echo "Restoring DLNA cache"' >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo "  duplicity --force file://$USB_MOUNT/backup/dlna /var/cache/minidlna" >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$RESTORE_SCRIPT_NAME

  echo 'sync' >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo "umount $USB_MOUNT" >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo "rm -rf $USB_MOUNT" >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo 'echo "Restore from USB drive is complete. You can now remove it."' >> /usr/bin/$RESTORE_SCRIPT_NAME
  echo 'exit 0' >> /usr/bin/$RESTORE_SCRIPT_NAME
  chmod 400 /usr/bin/$RESTORE_SCRIPT_NAME
  chmod +x /usr/bin/$RESTORE_SCRIPT_NAME

  echo 'create_restore_script' >> $COMPLETION_FILE
}

function backup_to_friends_servers {
  if grep -Fxq "backup_to_friends_servers" $COMPLETION_FILE; then
      return
  fi
  if [ ! $FRIENDS_SERVERS_LIST ]; then
      return
  fi

  apt-get -y --force-yes install duplicity

  if [ ! $BACKUP_TO_FRIENDS_PASSPHRASE ]; then
      BACKUP_TO_FRIENDS_PASSPHRASE=$(openssl rand -base64 32)
  fi

  if ! grep -q "With a USB drive attached just type" /home/$MY_USERNAME/README; then
      if [ ! -f /home/$MY_USERNAME/README ]; then
          touch /home/$MY_USERNAME/README
      fi
      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'Backups' >> /home/$MY_USERNAME/README
      echo '=======' >> /home/$MY_USERNAME/README
      echo 'With a USB drive attached just type "backup" or "restore" when logged in as root.' >> /home/$MY_USERNAME/README
      echo 'You will be asked to enter your GPG key passphrase.' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo "Passphrase for backups on friends servers: $BACKUP_TO_FRIENDS_PASSPHRASE" >> /home/$MY_USERNAME/README
      echo "To add friends servers create a file called $FRIENDS_SERVERS_LIST"
      echo 'and add entries like this:' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'username1@domain1//home/username1 ssh_password1' >> /home/$MY_USERNAME/README
      echo 'username2@domain2//home/username2 ssh_password2' >> /home/$MY_USERNAME/README
      echo '...' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'The system will try to backup to these remote locations once per day.' >> /home/$MY_USERNAME/README
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
  fi

  echo '#!/bin/bash' > /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "PASSPHRASE='$BACKUP_TO_FRIENDS_PASSPHRASE'" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "if [ ! -f $FRIENDS_SERVERS_LIST ]; then" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '    exit 1' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME

  echo '# Put some files into a temporary directory so that they can be easily backed up' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "if [ ! -d /home/$MY_USERNAME/tempfiles ]; then" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "  mkdir /home/$MY_USERNAME/tempfiles" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  if grep -Fxq "install_gnu_social" $COMPLETION_FILE; then
      echo 'if [ -f /var/backups/gnusocial_daily.sql ]; then' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
      echo "  cp /var/backups/gnusocial_daily.sql /home/$MY_USERNAME/tempfiles/gnusocial.sql" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
      echo 'else' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
      echo "  mysqldump --password=$MARIADB_PASSWORD gnusocial > /home/$MY_USERNAME/tempfiles/gnusocial.sql" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
      echo 'fi' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  fi
  if grep -Fxq "install_redmatrix" $COMPLETION_FILE; then
      echo 'if [ -f /var/backups/redmatrix_daily.sql ]; then' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
      echo "  cp /var/backups/redmatrix_daily.sql /home/$MY_USERNAME/tempfiles/redmatrix.sql" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
      echo 'else' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
      echo "  mysqldump --password=$MARIADB_PASSWORD redmatrix > /home/$MY_USERNAME/tempfiles/redmatrix.sql" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
      echo 'fi' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
      echo "tar -czvf /home/$MY_USERNAME/tempfiles/redmatrix.tar.gz /var/www/$REDMATRIX_DOMAIN_NAME/htdocs/.htconfig.php /var/www/$REDMATRIX_DOMAIN_NAME/htdocs/store" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
 fi
  if grep -Fxq "install_owncloud" $COMPLETION_FILE; then
      echo "tar -czvf /home/$MY_USERNAME/tempfiles/owncloud.tar.gz /var/www/$OWNCLOUD_DOMAIN_NAME/htdocs/data/$MY_USERNAME" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  fi
  if grep -Fxq "install_wiki" $COMPLETION_FILE; then
      echo "tar -czvf /home/$MY_USERNAME/tempfiles/wiki.tar.gz /var/www/$WIKI_DOMAIN_NAME/htdocs/data" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  fi
  if grep -Fxq "install_blog" $COMPLETION_FILE; then
      echo "tar -czvf /home/$MY_USERNAME/tempfiles/blog.tar.gz /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/data" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  fi
  echo "tar -czvf /home/$MY_USERNAME/tempfiles/miscfiles.tar.gz /home/$MY_USERNAME/.gnupg /home/$MY_USERNAME/.muttrc /home/$MY_USERNAME/.procmailrc /home/$MY_USERNAME/.ssh /home/$MY_USERNAME/personal" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME

  echo '' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo 'while read remote_server' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo 'do' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '  # Get the server and its password' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '  SERVER="scp://${* %%remote_server}"' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '  FTP_PASSWORD="${remote_server%% *}"' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '  # Backup the public mailing list' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "  if [ -d $PUBLIC_MAILING_LIST_DIRECTORY ]; then" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo -n '    duplicity incr --ssh-askpass --full-if-older-than 4W --exclude-other-filesystems ' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "$PUBLIC_MAILING_LIST_DIRECTORY $SERVER/publicmailinglist" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '  fi' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '  # Backup xmpp settings' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "  if [ -d $XMPP_DIRECTORY ]; then" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo -n '    duplicity incr --ssh-askpass --full-if-older-than 4W --exclude-other-filesystems ' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "$XMPP_DIRECTORY $SERVER/xmpp" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '  fi' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '  # Backup web content and other stuff' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "  if [ -d /home/$MY_USERNAME/tempfiles ]; then" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo -n '    duplicity incr --ssh-askpass --full-if-older-than 4W --exclude-other-filesystems ' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "/home/$MY_USERNAME/tempfiles $SERVER/tempfiles" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '  fi' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '  # Backup email' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "  if [ -d /home/$MY_USERNAME/Maildir ]; then" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo -n '    duplicity incr --ssh-askpass $GPG_KEY --full-if-older-than 4W --exclude-other-filesystems ' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "/home/$MY_USERNAME/Maildir $SERVER/Maildir" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '  fi' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '  # Backup DLNA cache' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "  if [ -d /var/cache/minidlna ]; then" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo -n '    duplicity incr --ssh-askpass --full-if-older-than 4W --exclude-other-filesystems ' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "/var/cache/minidlna $SERVER/dlna" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '  fi' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '  echo "Cleaning up backup files"' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "  if [ -d /home/$MY_USERNAME/Maildir ]; then" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "    duplicity --ssh-askpass --force cleanup $SERVER/Maildir" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '  fi' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "  if [ -d /home/$MY_USERNAME/tempfiles ]; then" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "    duplicity --ssh-askpass --force cleanup $SERVER/tempfiles" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '  fi' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "  if [ -d /var/cache/minidlna ]; then" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "    duplicity --ssh-askpass --force cleanup $SERVER/dlna" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '  fi' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "  if [ -d $XMPP_DIRECTORY ]; then" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "    duplicity --ssh-askpass --force cleanup $SERVER/xmpp" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '  fi' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "  if [ -d $PUBLIC_MAILING_LIST_DIRECTORY ]; then" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "    duplicity --ssh-askpass --force cleanup $SERVER/publicmailinglist" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '  fi' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '  echo "Removing old backups"' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "  if [ -d /home/$MY_USERNAME/Maildir ]; then" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "    duplicity --ssh-askpass --force remove-all-but-n-full 2 $SERVER/Maildir" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '  fi' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "  if [ -d /home/$MY_USERNAME/tempfiles ]; then" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "    duplicity --ssh-askpass --force remove-all-but-n-full 2 $SERVER/tempfiles" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '  fi' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "  if [ -d /var/cache/minidlna ]; then" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "    duplicity --ssh-askpass --force remove-all-but-n-full 2 $SERVER/dlna" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '  fi' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "  if [ -d $XMPP_DIRECTORY ]; then" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "    duplicity --ssh-askpass --force remove-all-but-n-full 2 $SERVER/xmpp" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '  fi' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "  if [ -d $PUBLIC_MAILING_LIST_DIRECTORY ]; then" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "    duplicity --ssh-askpass --force remove-all-but-n-full 2 $SERVER/publicmailinglist" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '  fi' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "done < $FRIENDS_SERVERS_LIST" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo '# Remove temporary files' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "if [ -d /home/$MY_USERNAME/tempfiles ]; then" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo "  rm -rf /home/$MY_USERNAME/tempfiles" >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  echo 'exit 0' >> /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  chown root:root /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  chmod 400 /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME
  chmod +x /usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME

  # update crontab
  echo '#!/bin/bash' > /etc/cron.daily/backuptofriends
  echo "/usr/bin/$BACKUP_TO_FRIENDS_SCRIPT_NAME" >> /etc/cron.daily/backuptofriends
  chmod +x /etc/cron.daily/backuptofriends

  echo 'backup_to_friends_servers' >> $COMPLETION_FILE
}

function restore_from_friend {
  if grep -Fxq "restore_from_friend" $COMPLETION_FILE; then
      return
  fi

  if ! grep -q "Restoring from Backups" /home/$MY_USERNAME/README; then
      if [ ! -f /home/$MY_USERNAME/README ]; then
          touch /home/$MY_USERNAME/README
      fi
      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'Restoring from Backups' >> /home/$MY_USERNAME/README
      echo '======================' >> /home/$MY_USERNAME/README
      echo 'To restore from USB backup plug in the USB drive then log in' >> /home/$MY_USERNAME/README
      echo 'as root and just type "restore".' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo "To restore from a friend's server use the command:" >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo "  $RESTORE_FROM_FRIEND_SCRIPT_NAME [server]" >> /home/$MY_USERNAME/README
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
  fi

  if [ ! $BACKUP_TO_FRIENDS_PASSPHRASE ]; then
      BACKUP_TO_FRIENDS_PASSPHRASE=$(openssl rand -base64 32)
  fi

  echo '#!/bin/bash' > /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo 'SERVER_NAME=$1' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo '' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo "PASSPHRASE='$BACKUP_TO_FRIENDS_PASSPHRASE'" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo '' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo 'if [ ! $SERVER_NAME ]; then' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo "    echo '$RESTORE_FROM_FRIEND_SCRIPT_NAME [server]'" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo '    exit 1' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo '' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo "if [ ! -f $FRIENDS_SERVERS_LIST ]; then" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo "    echo 'No friends list found at $FRIENDS_SERVERS_LIST'" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo '    exit 2' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo '' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo -n 'if ! grep -q "$SERVER_NAME" ' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo "$FRIENDS_SERVERS_LIST; then" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo '    echo "Server not found within the friends list"' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo '    exit 3' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo '' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo -n 'SERVER=$(grep -i "$SERVER_NAME" ' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo "$FRIENDS_SERVERS_LIST | awk -F ' ' '{print $1}')" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo -n 'FTP_PASSWORD=$(grep -i "$SERVER_NAME" ' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo "$FRIENDS_SERVERS_LIST | awk -F ' ' '{print $2}')" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo '' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME

  echo "if [ -d $PUBLIC_MAILING_LIST_DIRECTORY ]; then" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo '  echo "Restoring public mailing list"' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo "  duplicity --force scp://$SERVER/publicmailinglist $PUBLIC_MAILING_LIST_DIRECTORY" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME

  echo "if [ -d $XMPP_DIRECTORY ]; then" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo '  echo "Restoring XMPP settings"' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo "  duplicity --force scp://$SERVER/xmpp $XMPP_DIRECTORY" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME

  echo "if [ -d /home/$MY_USERNAME/tempfiles ]; then" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo "  rm -rf /home/$MY_USERNAME/tempfiles/*" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo 'else' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo "  mkdir /home/$MY_USERNAME/tempfiles" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo 'echo "Restoring web content and miscellaneous files"' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo "duplicity --force scp://$SERVER/tempfiles /home/$MY_USERNAME/tempfiles" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo "tar -xzvf /home/$MY_USERNAME/tempfiles/miscfiles.tar.gz -C /" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME

  if grep -Fxq "install_gnu_social" $COMPLETION_FILE; then
      echo "if [ -f /home/$MY_USERNAME/tempfiles/gnusocial.sql ]; then" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
      echo '  echo "Restoring microblog database"' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
      echo "  mysql -u root --password=$MARIADB_PASSWORD gnusocial -o < /home/$MY_USERNAME/tempfiles/gnusocial.sql" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
      echo 'fi' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  fi

  if grep -Fxq "install_redmatrix" $COMPLETION_FILE; then
      echo "if [ -f /home/$MY_USERNAME/tempfiles/redmatrix.sql ]; then" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
      echo '  echo "Restoring Red Matrix database"' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
      echo "  mysql -u root --password=$MARIADB_PASSWORD redmatrix -o < /home/$MY_USERNAME/tempfiles/redmatrix.sql" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
      echo "  tar -xzvf /home/$MY_USERNAME/tempfiles/redmatrix.tar.gz -C /" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
      echo 'fi' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  fi

  if grep -Fxq "install_owncloud" $COMPLETION_FILE; then
      echo "if [ -f /home/$MY_USERNAME/tempfiles/owncloud.tar.gz ]; then" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
      echo '  echo "Restoring Owncloud"' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
      echo "  tar -xzvf /home/$MY_USERNAME/tempfiles/owncloud.tar.gz -C /" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
      echo '  echo "Restoring owncloud database"' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
      echo "  mysql -u root --password=$MARIADB_PASSWORD owncloud -o < /home/$MY_USERNAME/tempfiles/owncloud.sql" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
      echo 'fi' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  fi

  if grep -Fxq "install_wiki" $COMPLETION_FILE; then
      echo "if [ -f /home/$MY_USERNAME/tempfiles/wiki.tar.gz ]; then" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
      echo '  echo "Restoring Wiki"' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
      echo "  tar -xzvf /home/$MY_USERNAME/tempfiles/wiki.tar.gz -C /" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
      echo 'fi' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  fi

  if grep -Fxq "install_blog" $COMPLETION_FILE; then
      echo "if [ -f /home/$MY_USERNAME/tempfiles/blog.tar.gz ]; then" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
      echo '  echo "Restoring Blog"' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
      echo "  tar -xzvf /home/$MY_USERNAME/tempfiles/blog.tar.gz -C /" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
      echo 'fi' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  fi

  echo "rm -rf /home/$MY_USERNAME/tempfiles" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME

  echo "if [ -d /home/$MY_USERNAME/Maildir ]; then" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo '  echo "Restoring emails"' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo "  duplicity --force scp://$SERVER/Maildir /home/$MY_USERNAME/Maildir" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME

  echo "if [ -d /var/cache/minidlna ]; then" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo '  echo "Restoring DLNA cache"' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo "  duplicity --force scp://$SERVER/dlna /var/cache/minidlna" >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo 'fi' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME

  echo '' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME
  echo 'exit 0' >> /usr/bin/$RESTORE_FROM_FRIEND_SCRIPT_NAME

  echo 'restore_from_friend' >> $COMPLETION_FILE
}

function remove_default_user {
  # make sure you don't use the default user account
  if [[ $MY_USERNAME == "debian" ]]; then
      echo 'Do not use the default debian user account. Create a different user with: adduser [username]'
      exit 68
  fi
  # remove the default debian user to prevent it from becoming an attack vector
  if [ -d /home/debian ]; then
      userdel -r debian
      echo 'Default debian user account removed'
  fi
}

function enforce_good_passwords {
  # because humans are generally bad at choosing passwords
  if grep -Fxq "enforce_good_passwords" $COMPLETION_FILE; then
      return
  fi
  apt-get -y --force-yes install libpam-cracklib

  sed -i 's/password.*requisite.*pam_cracklib.so.*/password        required                       pam_cracklib.so retry=2 dcredit=-4 ucredit=-1 ocredit=-1 lcredit=0 minlen=10 reject_username/g' /etc/pam.d/common-password
  echo 'enforce_good_passwords' >> $COMPLETION_FILE
}

function change_login_message {
  if grep -Fxq "change_login_message" $COMPLETION_FILE; then
      return
  fi
  echo '' > /etc/motd
  echo ".---.                  .              .                   " >> /etc/motd
  echo "|                      |              |                   " >> /etc/motd
  echo "|--- .--. .-.  .-.  .-.|  .-. .--.--. |.-.  .-. .--.  .-. " >> /etc/motd
  echo "|    |   (.-' (.-' (   | (   )|  |  | |   )(   )|  | (.-' " >> /etc/motd
  echo "'    '     --'  --'  -' -  -' '  '   -' -'   -' '   -  --'" >> /etc/motd

  if [[ $SYSTEM_TYPE == "$VARIANT_MEDIA" ]]; then
      echo '                 .    .        .            ' >> /etc/motd
      echo '                 |\  /|        |   o        ' >> /etc/motd
      echo "                 | \/ | .-. .-.|   .  .-.   " >> /etc/motd
      echo "                 |    |(.-'(   |   | (   )  " >> /etc/motd
      echo "                 '    '  --' -' --'  - -' - " >> /etc/motd
  fi

  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" ]]; then
      echo '              .  .   .  .     .          ' >> /etc/motd
      echo '               \  \ /  /   o _|_         ' >> /etc/motd
      echo '                \  \  /.--..  |  .-. .--.' >> /etc/motd
      echo "                 \/ \/ |   |  | (.-' |   " >> /etc/motd
      echo "                  ' '  ' -'  - -' --''   " >> /etc/motd
  fi

  if [[ $SYSTEM_TYPE == "$VARIANT_CLOUD" ]]; then
      echo '                  .--..             . ' >> /etc/motd
      echo '                 :    |             | ' >> /etc/motd
      echo '                 |    | .-. .  . .-.| ' >> /etc/motd
      echo '                 :    |(   )|  |(   | ' >> /etc/motd
      echo "                   --' - -'  -- - -' -" >> /etc/motd
  fi

  if [[ $SYSTEM_TYPE == "$VARIANT_CHAT" ]]; then
      echo '                  .--..         .   ' >> /etc/motd
      echo '                 :    |        _|_  ' >> /etc/motd
      echo '                 |    |--. .-.  |   ' >> /etc/motd
      echo '                 :    |  |(   ) |   ' >> /etc/motd
      echo "                   --''   - -' - -' " >> /etc/motd
  fi

  if [[ $SYSTEM_TYPE == "$VARIANT_SOCIAL" ]]; then
      echo '               .-.                    .  ' >> /etc/motd
      echo '              (   )           o       |  ' >> /etc/motd
      echo '                -.  .-.  .-.  .  .-.  |  ' >> /etc/motd
      echo '              (   )(   )(     | (   ) |  ' >> /etc/motd
      echo "                -'   -'   -'-'  - -' - - " >> /etc/motd
  fi

  if [[ $SYSTEM_TYPE == "$VARIANT_MAILBOX" ]]; then
      echo '             .    .           . .              ' >> /etc/motd
      echo '             |\  /|        o  | |              ' >> /etc/motd
      echo '             | \/ | .-.    .  | |.-.  .-.-. ,- ' >> /etc/motd
      echo '             |    |(   )   |  | |   )(   ) :   ' >> /etc/motd
      echo "             '    '  -' --'  - -' -'   -'-'  - " >> /etc/motd
  fi

  echo '' >> /etc/motd
  echo '                  Freedom in the Cloud' >> /etc/motd
  echo '' >> /etc/motd
  echo 'change_login_message' >> $COMPLETION_FILE
}

function search_for_attached_usb_drive {
  # If a USB drive is attached then search for email,
  # gpg, ssh keys and emacs configuration
  if grep -Fxq "search_for_attached_usb_drive" $COMPLETION_FILE; then
      return
  fi
  if [ -b $USB_DRIVE ]; then
      if [ ! -d $USB_MOUNT ]; then
          echo 'Mounting USB drive'
          mkdir $USB_MOUNT
          mount $USB_DRIVE $USB_MOUNT
      fi
      if ! [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" ]]; then
          if [ -d $USB_MOUNT/Maildir ]; then
              echo 'Maildir found on USB drive'
              IMPORT_MAILDIR=$USB_MOUNT/Maildir
          fi
          if [ -d $USB_MOUNT/.gnupg ]; then
              echo 'Importing GPG keyring'
              cp -r $USB_MOUNT/.gnupg /home/$MY_USERNAME
              chown -R $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.gnupg
              GPG_KEYS_IMPORTED="yes"
              if [ -f /home/$MY_USERNAME/.gnupg/secring.gpg ]; then
                  shred -zu $USB_MOUNT/.gnupg/secring.gpg
                  shred -zu $USB_MOUNT/.gnupg/random_seed
                  shred -zu $USB_MOUNT/.gnupg/trustdb.gpg
                  rm -rf $USB_MOUNT/.gnupg
              else
                  echo 'GPG files did not copy'
                  exit 7
              fi
          fi

          if [ -f $USB_MOUNT/.procmailrc ]; then
              echo 'Importing procmail settings'
              cp $USB_MOUNT/.procmailrc /home/$MY_USERNAME
              chown -R $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.procmailrc
          fi

          if [ -f $USB_MOUNT/private_key.gpg ]; then
              echo 'GPG private key found on USB drive'
              MY_GPG_PRIVATE_KEY=$USB_MOUNT/private_key.gpg
          fi
          if [ -f $USB_MOUNT/public_key.gpg ]; then
              echo 'GPG public key found on USB drive'
              MY_GPG_PUBLIC_KEY=$USB_MOUNT/public_key.gpg
          fi
      fi
      if [ -d $USB_MOUNT/prosody ]; then
          if [ ! -d $XMPP_DIRECTORY ]; then
              mkdir $XMPP_DIRECTORY
          fi
          cp -r $USB_MOUNT/prosody/* $XMPP_DIRECTORY
          chown -R prosody:prosody $XMPP_DIRECTORY
      fi
      if [ -d $USB_MOUNT/.ssh ]; then
          echo 'Importing ssh keys'
          cp -r $USB_MOUNT/.ssh /home/$MY_USERNAME
          chown -R $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.ssh
          # for security delete the ssh keys from the usb drive
          if [ -f /home/$MY_USERNAME/.ssh/id_rsa ]; then
              shred -zu $USB_MOUNT/.ssh/id_rsa
              shred -zu $USB_MOUNT/.ssh/id_rsa.pub
              shred -zu $USB_MOUNT/.ssh/known_hosts
              rm -rf $USB_MOUNT/.ssh
          else
              echo 'ssh files did not copy'
              exit 8
          fi
      fi
      if [ -f $USB_MOUNT/.emacs ]; then
          echo 'Importing .emacs file'
          cp -f $USB_MOUNT/.emacs /home/$MY_USERNAME/.emacs
          chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.emacs
      fi
      if [ -d $USB_MOUNT/.emacs.d ]; then
          echo 'Importing .emacs.d directory'
          cp -r $USB_MOUNT/.emacs.d /home/$MY_USERNAME
          chown -R $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.emacs.d
      fi
      if [ -d $USB_MOUNT/ssl ]; then
          echo 'Importing SSL certificates'
          cp -r $USB_MOUNT/ssl/* /etc/ssl
          chmod 640 /etc/ssl/certs/*
          chmod 400 /etc/ssl/private/*
          # change ownership of some certificates
          if [ -d /etc/prosody ]; then
              chown prosody:prosody /etc/ssl/private/xmpp.*
              chown prosody:prosody /etc/ssl/certs/xmpp.*
          fi
          if [ -d /etc/dovecot ]; then
              chown root:dovecot /etc/ssl/certs/dovecot.*
              chown root:dovecot /etc/ssl/private/dovecot.*
          fi
          if [ -f /etc/ssl/private/exim.key ]; then
              chown root:Debian-exim /etc/ssl/private/exim.key /etc/ssl/certs/exim.crt /etc/ssl/certs/exim.dhparam
          fi
      fi
      if [ -d $USB_MOUNT/personal ]; then
          echo 'Importing personal directory'
          cp -r $USB_MOUNT/personal /home/$MY_USERNAME
          chown -R $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/personal
      fi
  else
      if [ -d $USB_MOUNT ]; then
          umount $USB_MOUNT
          rm -rf $USB_MOUNT
      fi
      echo 'No USB drive attached'
  fi
  echo 'search_for_attached_usb_drive' >> $COMPLETION_FILE
}

function remove_proprietary_repos {
  if grep -Fxq "remove_proprietary_repos" $COMPLETION_FILE; then
      return
  fi
  sed -i 's/ non-free//g' /etc/apt/sources.list
  echo 'remove_proprietary_repos' >> $COMPLETION_FILE
}

function change_debian_repos {
  if grep -Fxq "change_debian_repos" $COMPLETION_FILE; then
      return
  fi
  rm -rf /var/lib/apt/lists/*
  apt-get clean
  sed -i "s/ftp.us.debian.org/$DEBIAN_REPO/g" /etc/apt/sources.list

  # ensure that there is a security repo
  if ! grep -q "security" /etc/apt/sources.list; then
      echo "deb http://security.debian.org/ $DEBIAN_VERSION/updates main contrib" >> /etc/apt/sources.list
      echo "#deb-src http://security.debian.org/ $DEBIAN_VERSION/updates main contrib" >> /etc/apt/sources.list
  fi

  apt-get update
  apt-get -y --force-yes install apt-transport-https
  echo 'change_debian_repos' >> $COMPLETION_FILE
}

function initial_setup {
  if grep -Fxq "initial_setup" $COMPLETION_FILE; then
      return
  fi
  apt-get -y remove --purge apache*
  apt-get -y dist-upgrade
  apt-get -y install ca-certificates emacs24

  echo 'initial_setup' >> $COMPLETION_FILE
}

function install_editor {
  if grep -Fxq "install_editor" $COMPLETION_FILE; then
      return
  fi
  update-alternatives --set editor /usr/bin/emacs24

  # A minimal emacs configuration
  echo "(add-to-list 'load-path "~/.emacs.d/")" > /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ';; ===== Remove trailing whitepace ======================================' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ";;(add-hook 'before-save-hook 'delete-trailing-whitespace)" >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ';; Goto a line number with CTRL-l' >> /home/$MY_USERNAME/.emacs
  echo -n '(global-set-key "\C-l" ' >> /home/$MY_USERNAME/.emacs
  echo "'goto-line)" >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ';; ===== Show line numbers ==============================================' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo "(add-hook 'find-file-hook (lambda () (linum-mode 1)))" >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ';; ===== Enable line wrapping in org-mode ===============================' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo " (add-hook 'org-mode-hook" >> /home/$MY_USERNAME/.emacs
  echo "           '(lambda ()" >> /home/$MY_USERNAME/.emacs
  echo "              (visual-line-mode 1)))" >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ';; ===== Enable shift select in org mode ================================' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo '(setq org-support-shift-select t)' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ';; ===== Set standard indent to 4 rather that 4 ========================='
  echo '' >> /home/$MY_USERNAME/.emacs
  echo '(setq standard-indent 4)' >> /home/$MY_USERNAME/.emacs
  echo '(setq-default tab-width 4)' >> /home/$MY_USERNAME/.emacs
  echo '(setq c-basic-offset 4)' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ';; ===== Support Wheel Mouse Scrolling ==================================' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo '(mouse-wheel-mode t)' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ';; ===== Place Backup Files in Specific Directory =======================' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo '(setq make-backup-files t)' >> /home/$MY_USERNAME/.emacs
  echo '(setq version-control t)' >> /home/$MY_USERNAME/.emacs
  echo '(setq backup-directory-alist (quote ((".*" . "~/.emacs_backups/"))))' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ';; ===== Make Text mode the default mode for new buffers ================' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo "(setq default-major-mode 'text-mode)" >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ';; ===== Line length ====================================================' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo '(setq-default fill-column 72)' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ';; ===== Enable Line and Column Numbering ===============================' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo '(line-number-mode 1)' >> /home/$MY_USERNAME/.emacs
  echo '(column-number-mode 1)' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ';; ===== Turn on Auto Fill mode automatically in all modes ==============' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ';; Auto-fill-mode the the automatic wrapping of lines and insertion of' >> /home/$MY_USERNAME/.emacs
  echo ';; newlines when the cursor goes over the column limit.' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ';; This should actually turn on auto-fill-mode by default in all major' >> /home/$MY_USERNAME/.emacs
  echo ';; modes. The other way to do this is to turn on the fill for specific modes' >> /home/$MY_USERNAME/.emacs
  echo ';; via hooks.' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo '(setq auto-fill-mode 1)' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo ';; ===== Enable GPG encryption =========================================' >> /home/$MY_USERNAME/.emacs
  echo '' >> /home/$MY_USERNAME/.emacs
  echo "(require 'epa)" >> /home/$MY_USERNAME/.emacs
  echo '(epa-file-enable)' >> /home/$MY_USERNAME/.emacs
  cp /home/$MY_USERNAME/.emacs /root/.emacs
  chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.emacs

  echo 'install_editor' >> $COMPLETION_FILE
}

function enable_backports {
  if grep -Fxq "enable_backports" $COMPLETION_FILE; then
      return
  fi
  if ! grep -Fxq "deb http://$DEBIAN_REPO/debian $DEBIAN_VERSION-backports main" /etc/apt/sources.list; then
    echo "deb http://$DEBIAN_REPO/debian $DEBIAN_VERSION-backports main" >> /etc/apt/sources.list
  fi
  echo 'enable_backports' >> $COMPLETION_FILE
}

function update_the_kernel {
  if grep -Fxq "update_the_kernel" $COMPLETION_FILE; then
      return
  fi
  # if this is not a beaglebone or is a docker container
  # then just use the standard kernel
  if [[ $INSTALLED_WITHIN_DOCKER == "yes" || $INSTALLING_ON_BBB != "yes" ]]; then
      return
  fi
  cd /opt/scripts/tools
  ./update_kernel.sh --kernel $KERNEL_VERSION
  echo 'update_the_kernel' >> $COMPLETION_FILE
}

function enable_zram {
  if grep -Fxq "enable_zram" $COMPLETION_FILE; then
      return
  fi
  if [[ $INSTALLED_WITHIN_DOCKER == "yes" || $INSTALLING_ON_BBB != "yes" ]]; then
      return
  fi
  if ! grep -q "options zram num_devices=1" /etc/modprobe.d/zram.conf; then
      echo 'options zram num_devices=1' >> /etc/modprobe.d/zram.conf
  fi
  echo '#!/bin/bash' > /etc/init.d/zram
  echo '### BEGIN INIT INFO' >> /etc/init.d/zram
  echo '# Provides: zram' >> /etc/init.d/zram
  echo '# Required-Start:' >> /etc/init.d/zram
  echo '# Required-Stop:' >> /etc/init.d/zram
  echo '# Default-Start: 2 3 4 5' >> /etc/init.d/zram
  echo '# Default-Stop: 0 1 6' >> /etc/init.d/zram
  echo '# Short-Description: Increased Performance In Linux With zRam (Virtual Swap Compressed in RAM)' >> /etc/init.d/zram
  echo '# Description: Adapted from systemd scripts at https://github.com/mystilleef/FedoraZram' >> /etc/init.d/zram
  echo '### END INIT INFO' >> /etc/init.d/zram
  echo 'start() {' >> /etc/init.d/zram
  echo '    # get the number of CPUs' >> /etc/init.d/zram
  echo '    num_cpus=$(grep -c processor /proc/cpuinfo)' >> /etc/init.d/zram
  echo '    # if something goes wrong, assume we have 1' >> /etc/init.d/zram
  echo '    [ "$num_cpus" != 0 ] || num_cpus=1' >> /etc/init.d/zram
  echo '    # set decremented number of CPUs' >> /etc/init.d/zram
  echo '    decr_num_cpus=$((num_cpus - 1))' >> /etc/init.d/zram
  echo '    # get the amount of memory in the machine' >> /etc/init.d/zram
  echo '    mem_total_kb=$(grep MemTotal /proc/meminfo | grep -E --only-matching "[[:digit:]]+")' >> /etc/init.d/zram
  echo '    mem_total=$((mem_total_kb * 1024))' >> /etc/init.d/zram
  echo '    # load dependency modules' >> /etc/init.d/zram
  echo '    modprobe zram num_devices=$num_cpus' >> /etc/init.d/zram
  echo '    # initialize the devices' >> /etc/init.d/zram
  echo '    for i in $(seq 0 $decr_num_cpus); do' >> /etc/init.d/zram
  echo '      echo $((mem_total / num_cpus)) > /sys/block/zram$i/disksize' >> /etc/init.d/zram
  echo '    done' >> /etc/init.d/zram
  echo '    # Creating swap filesystems' >> /etc/init.d/zram
  echo '    for i in $(seq 0 $decr_num_cpus); do' >> /etc/init.d/zram
  echo '      mkswap /dev/zram$i' >> /etc/init.d/zram
  echo '    done' >> /etc/init.d/zram
  echo '    # Switch the swaps on' >> /etc/init.d/zram
  echo '    for i in $(seq 0 $decr_num_cpus); do' >> /etc/init.d/zram
  echo '      swapon -p 100 /dev/zram$i' >> /etc/init.d/zram
  echo '    done' >> /etc/init.d/zram
  echo '}' >> /etc/init.d/zram
  echo 'stop() {' >> /etc/init.d/zram
  echo '    # get the number of CPUs' >> /etc/init.d/zram
  echo '    num_cpus=$(grep -c processor /proc/cpuinfo)' >> /etc/init.d/zram
  echo '    # set decremented number of CPUs' >> /etc/init.d/zram
  echo '    decr_num_cpus=$((num_cpus - 1))' >> /etc/init.d/zram
  echo '    # Switching off swap' >> /etc/init.d/zram
  echo '    for i in $(seq 0 $decr_num_cpus); do' >> /etc/init.d/zram
  echo '      if [ "$(grep /dev/zram$i /proc/swaps)" != "" ]; then' >> /etc/init.d/zram
  echo '        swapoff /dev/zram$i' >> /etc/init.d/zram
  echo '        sleep 1' >> /etc/init.d/zram
  echo '      fi' >> /etc/init.d/zram
  echo '    done' >> /etc/init.d/zram
  echo '    sleep 1' >> /etc/init.d/zram
  echo '    rmmod zram' >> /etc/init.d/zram
  echo '}' >> /etc/init.d/zram
  echo 'case "$1" in' >> /etc/init.d/zram
  echo '    start)' >> /etc/init.d/zram
  echo '        start' >> /etc/init.d/zram
  echo '        ;;' >> /etc/init.d/zram
  echo '    stop)' >> /etc/init.d/zram
  echo '        stop' >> /etc/init.d/zram
  echo '        ;;' >> /etc/init.d/zram
  echo '    restart)' >> /etc/init.d/zram
  echo '        stop' >> /etc/init.d/zram
  echo '        sleep 3' >> /etc/init.d/zram
  echo '        start' >> /etc/init.d/zram
  echo '        ;;' >> /etc/init.d/zram
  echo '    *)' >> /etc/init.d/zram
  echo '        echo "Usage: $0 {start|stop|restart}"' >> /etc/init.d/zram
  echo '        RETVAL=1' >> /etc/init.d/zram
  echo 'esac' >> /etc/init.d/zram
  echo 'exit $RETVAL' >> /etc/init.d/zram
  chmod +x /etc/init.d/zram
  update-rc.d zram defaults
  echo 'enable_zram' >> $COMPLETION_FILE
}

function random_number_generator {
  if grep -Fxq "random_number_generator" $COMPLETION_FILE; then
      return
  fi
  if [[ $INSTALLING_ON_BBB != "yes" ]]; then
      # On systems which are not beaglebones assume that
      # no hardware random number generator is available
      # and use the second best option
      apt-get -y --force-yes install haveged
      return
  fi
  if [[ $INSTALLED_WITHIN_DOCKER == "yes" ]]; then
      # it is assumed that docker uses the random number
      # generator of the host system
      return
  fi
  if [[ $USE_HWRNG == "yes" ]]; then
    apt-get -y --force-yes install rng-tools
    sed -i 's|#HRNGDEVICE=/dev/hwrng|HRNGDEVICE=/dev/hwrng|g' /etc/default/rng-tools
  else
    apt-get -y --force-yes install haveged
  fi
  echo 'random_number_generator' >> $COMPLETION_FILE
}

function configure_ssh {
  if grep -Fxq "configure_ssh" $COMPLETION_FILE; then
      return
  fi
  sed -i "s/Port 22/Port $SSH_PORT/g" /etc/ssh/sshd_config
  sed -i 's/PermitRootLogin without-password/PermitRootLogin no/g' /etc/ssh/sshd_config
  sed -i 's/X11Forwarding yes/X11Forwarding no/g' /etc/ssh/sshd_config
  sed -i 's/ServerKeyBits 1024/ServerKeyBits 4096/g' /etc/ssh/sshd_config
  sed -i 's/TCPKeepAlive yes/TCPKeepAlive no/g' /etc/ssh/sshd_config
  sed -i 's|HostKey /etc/ssh/ssh_host_dsa_key|#HostKey /etc/ssh/ssh_host_dsa_key|g' /etc/ssh/sshd_config
  sed -i 's|HostKey /etc/ssh/ssh_host_ecdsa_key|#HostKey /etc/ssh/ssh_host_ecdsa_key|g' /etc/ssh/sshd_config
  echo 'ClientAliveInterval 60' >> /etc/ssh/sshd_config
  echo 'ClientAliveCountMax 3' >> /etc/ssh/sshd_config
  echo 'Ciphers aes256-ctr,aes128-ctr' >> /etc/ssh/sshd_config
  echo 'MACs hmac-sha2-512,hmac-sha2-256,hmac-ripemd160
  KexAlgorithms diffie-hellman-group-exchange-sha256,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1' >> /etc/ssh/sshd_config
  apt-get -y --force-yes install fail2ban
  echo 'configure_ssh' >> $COMPLETION_FILE
  # Don't reboot if installing within docker
  # random numbers will come from the host system
  if [[ $INSTALLED_WITHIN_DOCKER == "yes" || $INSTALLING_ON_BBB != "yes" ]]; then
      return
  fi
  echo ''
  echo ''
  echo '  *** Rebooting to initialise ssh settings and random number generator ***'
  echo ''
  echo "  *** Reconnect via ssh on port $SSH_PORT, then run this script again  ***"
  echo ''
  reboot
}

function regenerate_ssh_keys {
  if grep -Fxq "regenerate_ssh_keys" $COMPLETION_FILE; then
      return
  fi
  rm -f /etc/ssh/ssh_host_*
  dpkg-reconfigure openssh-server
  service ssh restart
  echo 'regenerate_ssh_keys' >> $COMPLETION_FILE
}

function configure_dns {
  if grep -Fxq "configure_dns" $COMPLETION_FILE; then
      return
  fi
  echo 'domain localdomain' > /etc/resolv.conf
  echo 'search localdomain' >> /etc/resolv.conf
  echo 'nameserver 213.73.91.35' >> /etc/resolv.conf
  echo 'nameserver 85.214.20.141' >> /etc/resolv.conf
  echo 'configure_dns' >> $COMPLETION_FILE
}

function set_your_domain_name {
  if grep -Fxq "set_your_domain_name" $COMPLETION_FILE; then
      return
  fi
  echo "$DOMAIN_NAME" > /etc/hostname
  hostname $DOMAIN_NAME
  sed -i "s/127.0.1.1       arm/127.0.1.1       $DOMAIN_NAME/g" /etc/hosts
  echo "127.0.1.1  $DOMAIN_NAME" >> /etc/hosts
  echo 'set_your_domain_name' >> $COMPLETION_FILE
}

function time_synchronisation {
  if grep -Fxq "time_synchronisation" $COMPLETION_FILE; then
      return
  fi
  #apt-get -y --force-yes install tlsdate

  # building tlsdate from source is a workaround because of
  # this bug https://github.com/ioerror/tlsdate/issues/130
  apt-get -y --force-yes install build-essential automake git pkg-config autoconf libtool libssl-dev libevent-dev

  if [ ! -d $INSTALL_DIR ]; then
      mkdir $INSTALL_DIR
  fi
  cd $INSTALL_DIR
  git clone https://github.com/ioerror/tlsdate.git
  cd $INSTALL_DIR/tlsdate
  ./autogen.sh
  ./configure
  make
  make install
  cp /usr/local/bin/tlsdate* /usr/bin
  cp /usr/local/sbin/tlsdate* /usr/bin

  apt-get -y remove ntpdate

  echo '#!/bin/bash' > /usr/bin/updatedate
  echo "TIMESOURCE='TLS_TIME_SOURCE1'" >> /usr/bin/updatedate
  echo "TIMESOURCE2='TLS_TIME_SOURCE2'" >> /usr/bin/updatedate
  echo 'LOGFILE=/var/log/tlsdate.log' >> /usr/bin/updatedate
  echo 'TIMEOUT=5' >> /usr/bin/updatedate
  echo "EMAIL=$MY_EMAIL_ADDRESS" >> /usr/bin/updatedate
  echo '# File which contains the previous date as a number' >> /usr/bin/updatedate
  echo 'BEFORE_DATE_FILE=/var/log/tlsdateprevious.txt' >> /usr/bin/updatedate
  echo '# File which contains the previous date as a string' >> /usr/bin/updatedate
  echo 'BEFORE_FULLDATE_FILE=/var/log/tlsdate.txt' >> /usr/bin/updatedate
  echo 'DATE_BEFORE=$(date)' >> /usr/bin/updatedate
  echo 'BEFORE=$(date -d "$Y-$M-$D" "+%s")' >> /usr/bin/updatedate
  echo 'BACKWARDS_BETWEEN=0' >> /usr/bin/updatedate
  echo '# If the date was previously set' >> /usr/bin/updatedate
  echo 'if [ -f "$BEFORE_DATE_FILE" ]; then' >> /usr/bin/updatedate
  echo '    BEFORE_FILE=$(cat $BEFORE_DATE_FILE)' >> /usr/bin/updatedate
  echo '    BEFORE_FULLDATE=$(cat $BEFORE_FULLDATE_FILE)' >> /usr/bin/updatedate
  echo '    # is the date going backwards?' >> /usr/bin/updatedate
  echo '    if (( $BEFORE_FILE > $BEFORE )); then' >> /usr/bin/updatedate
  echo '        echo -n "Date went backwards between tlsdate updates. " >> $LOGFILE' >> /usr/bin/updatedate
  echo '        echo -n "$BEFORE_FILE > $BEFORE, " >> $LOGFILE' >> /usr/bin/updatedate
  echo '        echo "$BEFORE_FULLDATE > $DATE_BEFORE" >> $LOGFILE' >> /usr/bin/updatedate
  echo '        # Send a warning email' >> /usr/bin/updatedate
  echo '        echo $(tail $LOGFILE -n 2) | mail -s "tlsdate anomaly" $EMAIL' >> /usr/bin/updatedate
  echo '        # Try another time source' >> /usr/bin/updatedate
  echo '        TIMESOURCE=$TIMESOURCE2' >> /usr/bin/updatedate
  echo '        # try running without any parameters' >> /usr/bin/updatedate
  echo '        tlsdate >> $LOGFILE' >> /usr/bin/updatedate
  echo '        BACKWARDS_BETWEEN=1' >> /usr/bin/updatedate
  echo '    fi' >> /usr/bin/updatedate
  echo 'fi' >> /usr/bin/updatedate
  echo '# Set the date' >> /usr/bin/updatedate
  echo '/usr/bin/timeout $TIMEOUT tlsdate -l -t -H $TIMESOURCE -p 443 >> $LOGFILE' >> /usr/bin/updatedate
  echo 'DATE_AFTER=$(date)' >> /usr/bin/updatedate
  echo 'AFTER=$(date -d "$Y-$M-$D" '+%s')' >> /usr/bin/updatedate
  echo '# After setting the date did it go backwards?' >> /usr/bin/updatedate
  echo 'if (( $AFTER < $BEFORE )); then' >> /usr/bin/updatedate
  echo '    echo "Incorrect date: $DATE_BEFORE -> $DATE_AFTER" >> $LOGFILE' >> /usr/bin/updatedate
  echo '    # Send a warning email' >> /usr/bin/updatedate
  echo '    echo $(tail $LOGFILE -n 2) | mail -s "tlsdate anomaly" $EMAIL' >> /usr/bin/updatedate
  echo '    # Try resetting the date from another time source' >> /usr/bin/updatedate
  echo '    /usr/bin/timeout $TIMEOUT tlsdate -l -t -H $TIMESOURCE2 -p 443 >> $LOGFILE' >> /usr/bin/updatedate
  echo '    DATE_AFTER=$(date)' >> /usr/bin/updatedate
  echo '    AFTER=$(date -d "$Y-$M-$D" "+%s")' >> /usr/bin/updatedate
  echo 'else' >> /usr/bin/updatedate
  echo '    echo -n $TIMESOURCE >> $LOGFILE' >> /usr/bin/updatedate
  echo '    if [ -f "$BEFORE_DATE_FILE" ]; then' >> /usr/bin/updatedate
  echo '        echo -n " " >> $LOGFILE' >> /usr/bin/updatedate
  echo '        echo -n $BEFORE_FILE >> $LOGFILE' >> /usr/bin/updatedate
  echo '    fi' >> /usr/bin/updatedate
  echo '    echo -n " " >> $LOGFILE' >> /usr/bin/updatedate
  echo '    echo -n $BEFORE >> $LOGFILE' >> /usr/bin/updatedate
  echo '    echo -n " " >> $LOGFILE' >> /usr/bin/updatedate
  echo '    echo -n $AFTER >> $LOGFILE' >> /usr/bin/updatedate
  echo '    echo -n " " >> $LOGFILE' >> /usr/bin/updatedate
  echo '    echo $DATE_AFTER >> $LOGFILE' >> /usr/bin/updatedate
  echo 'fi' >> /usr/bin/updatedate
  echo '# Log the last date' >> /usr/bin/updatedate
  echo 'if [[ $BACKWARDS_BETWEEN == 0 ]]; then' >> /usr/bin/updatedate
  echo '    echo "$AFTER" > $BEFORE_DATE_FILE' >> /usr/bin/updatedate
  echo '    echo "$DATE_AFTER" > $BEFORE_FULLDATE_FILE' >> /usr/bin/updatedate
  echo '    exit 0' >> /usr/bin/updatedate
  echo 'else' >> /usr/bin/updatedate
  echo '    exit 1' >> /usr/bin/updatedate
  echo 'fi' >> /usr/bin/updatedate
  chmod +x /usr/bin/updatedate
  echo '*/15           * *   *   *   root /usr/bin/updatedate' >> /etc/crontab
  service cron restart

  echo '#!/bin/bash' > /etc/init.d/tlsdate
  echo '# /etc/init.d/tlsdate' >> /etc/init.d/tlsdate
  echo '### BEGIN INIT INFO' >> /etc/init.d/tlsdate
  echo '# Provides:          tlsdate' >> /etc/init.d/tlsdate
  echo '# Required-Start:    $remote_fs $syslog' >> /etc/init.d/tlsdate
  echo '# Required-Stop:     $remote_fs $syslog' >> /etc/init.d/tlsdate
  echo '# Default-Start:     2 3 4 5' >> /etc/init.d/tlsdate
  echo '# Default-Stop:      0 1 6' >> /etc/init.d/tlsdate
  echo '# Short-Description: Initially calls tlsdate with the timewarp option' >> /etc/init.d/tlsdate
  echo '# Description:       Initially calls tlsdate with the timewarp option' >> /etc/init.d/tlsdate
  echo '### END INIT INFO' >> /etc/init.d/tlsdate
  echo '# Author: Bob Mottram <bob@robotics.uk.to>' >> /etc/init.d/tlsdate
  echo 'PATH="/usr/local/sbin:/usr/local/bin:/usr/bin:/sbin:/usr/sbin:/bin"' >> /etc/init.d/tlsdate
  echo 'LOGFILE="/var/log/tlsdate.log"' >> /etc/init.d/tlsdate
  echo 'TLSDATECOMMAND="tlsdate --timewarp -l -H www.ptb.de -p 443 >> $LOGFILE"' >> /etc/init.d/tlsdate
  echo '#Start-Stop here' >> /etc/init.d/tlsdate
  echo 'case "$1" in' >> /etc/init.d/tlsdate
  echo '  start)' >> /etc/init.d/tlsdate
  echo '    echo "tlsdate started"' >> /etc/init.d/tlsdate
  echo '    $TLSDATECOMMAND' >> /etc/init.d/tlsdate
  echo '    ;;' >> /etc/init.d/tlsdate
  echo '  stop)' >> /etc/init.d/tlsdate
  echo '    echo "tlsdate stopped"' >> /etc/init.d/tlsdate
  echo '    ;;' >> /etc/init.d/tlsdate
  echo '  restart)' >> /etc/init.d/tlsdate
  echo '    echo "tlsdate restarted"' >> /etc/init.d/tlsdate
  echo '    $TLSDATECOMMAND' >> /etc/init.d/tlsdate
  echo '    ;;' >> /etc/init.d/tlsdate
  echo '    *)' >> /etc/init.d/tlsdate
  echo '  echo "Usage: $0 {start|stop|restart}"' >> /etc/init.d/tlsdate
  echo '  exit 1' >> /etc/init.d/tlsdate
  echo '  ;;' >> /etc/init.d/tlsdate
  echo 'esac' >> /etc/init.d/tlsdate
  echo 'exit 0' >> /etc/init.d/tlsdate
  chmod +x /etc/init.d/tlsdate
  update-rc.d tlsdate defaults
  echo 'time_synchronisation' >> $COMPLETION_FILE
}

function configure_firewall {
  if grep -Fxq "configure_firewall" $COMPLETION_FILE; then
      return
  fi
  if [[ $INSTALLED_WITHIN_DOCKER == "yes" ]]; then
      # docker does its own firewalling
      return
  fi
  iptables -P INPUT ACCEPT
  ip6tables -P INPUT ACCEPT
  iptables -F
  ip6tables -F
  iptables -X
  ip6tables -X
  iptables -P INPUT DROP
  ip6tables -P INPUT DROP
  iptables -A INPUT -i lo -j ACCEPT
  iptables -A INPUT -i eth0 -m conntrack --ctstate ESTABLISHED,RELATED -j ACCEPT

  # Make sure incoming tcp connections are SYN packets
  iptables -A INPUT -p tcp ! --syn -m state --state NEW -j DROP

  # Drop packets with incoming fragments
  iptables -A INPUT -f -j DROP

  # Drop bogons
  iptables -A INPUT -p tcp --tcp-flags ALL ALL -j DROP
  iptables -A INPUT -p tcp --tcp-flags ALL FIN,PSH,URG -j DROP
  iptables -A INPUT -p tcp --tcp-flags ALL SYN,RST,ACK,FIN,URG -j DROP

  # Incoming malformed NULL packets:
  iptables -A INPUT -p tcp --tcp-flags ALL NONE -j DROP

  echo 'configure_firewall' >> $COMPLETION_FILE
}

function save_firewall_settings {
  iptables-save > /etc/firewall.conf
  ip6tables-save > /etc/firewall6.conf
  printf '#!/bin/sh\n' > /etc/network/if-up.d/iptables
  printf 'iptables-restore < /etc/firewall.conf\n' >> /etc/network/if-up.d/iptables
  printf 'ip6tables-restore < /etc/firewall6.conf\n' >> /etc/network/if-up.d/iptables
  chmod +x /etc/network/if-up.d/iptables
}

function configure_firewall_for_dns {
  if grep -Fxq "configure_firewall_for_dns" $COMPLETION_FILE; then
      return
  fi
  if [[ $INSTALLED_WITHIN_DOCKER == "yes" ]]; then
      # docker does its own firewalling
      return
  fi
  iptables -A INPUT -i eth0 -p udp -m udp --dport 1024:65535 --sport 53 -j ACCEPT
  save_firewall_settings
  echo 'configure_firewall_for_dns' >> $COMPLETION_FILE
}

function configure_firewall_for_xmpp {
  if [ ! -d /etc/prosody ]; then
      return
  fi
  if grep -Fxq "configure_firewall_for_xmpp" $COMPLETION_FILE; then
      return
  fi
  if [[ $INSTALLED_WITHIN_DOCKER == "yes" ]]; then
      # docker does its own firewalling
      return
  fi
  iptables -A INPUT -i eth0 -p tcp --dport 5222:5223 -j ACCEPT
  iptables -A INPUT -i eth0 -p tcp --dport 5269 -j ACCEPT
  iptables -A INPUT -i eth0 -p tcp --dport 5280:5281 -j ACCEPT
  save_firewall_settings
  echo 'configure_firewall_for_xmpp' >> $COMPLETION_FILE
}

function configure_firewall_for_irc {
  if [ ! -d /etc/ngircd ]; then
      return
  fi
  if grep -Fxq "configure_firewall_for_irc" $COMPLETION_FILE; then
      return
  fi
  if [[ $INSTALLED_WITHIN_DOCKER == "yes" ]]; then
      # docker does its own firewalling
      return
  fi
  iptables -A INPUT -i eth0 -p tcp --dport 6697  -j ACCEPT
  iptables -I INPUT -i eth0 -p tcp --dport 1024:65535 --sport 6697 -j ACCEPT
  iptables -A INPUT -i eth0 -p tcp --dport 9999 -j ACCEPT
  save_firewall_settings
  echo 'configure_firewall_for_irc' >> $COMPLETION_FILE
}

function configure_firewall_for_ftp {
  if grep -Fxq "configure_firewall_for_ftp" $COMPLETION_FILE; then
      return
  fi
  if [[ $INSTALLED_WITHIN_DOCKER == "yes" ]]; then
      # docker does its own firewalling
      return
  fi
  iptables -I INPUT -i eth0 -p tcp --dport 1024:65535 --sport 20:21 -j ACCEPT
  save_firewall_settings
  echo 'configure_firewall_for_ftp' >> $COMPLETION_FILE
}

function configure_firewall_for_web_access {
  if grep -Fxq "configure_firewall_for_web_access" $COMPLETION_FILE; then
      return
  fi
  if [[ $INSTALLED_WITHIN_DOCKER == "yes" ]]; then
      # docker does its own firewalling
      return
  fi
  iptables -A INPUT -i eth0 -p tcp --dport 32768:61000 --sport 80 -j ACCEPT
  iptables -A INPUT -i eth0 -p tcp --dport 32768:61000 --sport 443 -j ACCEPT
  save_firewall_settings
  echo 'configure_firewall_for_web_access' >> $COMPLETION_FILE
}

function configure_firewall_for_web_server {
  if grep -Fxq "configure_firewall_for_web_server" $COMPLETION_FILE; then
      return
  fi
  if [[ $INSTALLED_WITHIN_DOCKER == "yes" ]]; then
      # docker does its own firewalling
      return
  fi
  iptables -A INPUT -i eth0 -p tcp --dport 80 -j ACCEPT
  iptables -A INPUT -i eth0 -p tcp --dport 443 -j ACCEPT
  save_firewall_settings
  echo 'configure_firewall_for_web_server' >> $COMPLETION_FILE
}

function configure_firewall_for_ssh {
  if grep -Fxq "configure_firewall_for_ssh" $COMPLETION_FILE; then
      return
  fi
  if [[ $INSTALLED_WITHIN_DOCKER == "yes" ]]; then
      # docker does its own firewalling
      return
  fi
  iptables -A INPUT -i eth0 -p tcp --dport 22 -j ACCEPT
  iptables -A INPUT -i eth0 -p tcp --dport $SSH_PORT -j ACCEPT
  save_firewall_settings
  echo 'configure_firewall_for_ssh' >> $COMPLETION_FILE
}

function configure_firewall_for_git {
  if grep -Fxq "configure_firewall_for_git" $COMPLETION_FILE; then
      return
  fi
  if [[ $INSTALLED_WITHIN_DOCKER == "yes" ]]; then
      # docker does its own firewalling
      return
  fi
  iptables -A INPUT -i eth0 -p tcp --dport 9418 -j ACCEPT
  save_firewall_settings
  echo 'configure_firewall_for_git' >> $COMPLETION_FILE
}

function configure_firewall_for_email {
  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" ]]; then
      return
  fi
  if grep -Fxq "configure_firewall_for_email" $COMPLETION_FILE; then
      return
  fi
  if [[ $INSTALLED_WITHIN_DOCKER == "yes" ]]; then
      # docker does its own firewalling
      return
  fi
  iptables -A INPUT -i eth0 -p tcp --dport 25 -j ACCEPT
  iptables -A INPUT -i eth0 -p tcp --dport 587 -j ACCEPT
  iptables -A INPUT -i eth0 -p tcp --dport 465 -j ACCEPT
  iptables -A INPUT -i eth0 -p tcp --dport 993 -j ACCEPT
  save_firewall_settings
  echo 'configure_firewall_for_email' >> $COMPLETION_FILE
}

function configure_internet_protocol {
  if grep -Fxq "configure_internet_protocol" $COMPLETION_FILE; then
      return
  fi
  sed -i "s/#net.ipv4.tcp_syncookies=1/net.ipv4.tcp_syncookies=1/g" /etc/sysctl.conf
  sed -i "s/#net.ipv4.conf.all.accept_redirects = 0/net.ipv4.conf.all.accept_redirects = 0/g" /etc/sysctl.conf
  sed -i "s/#net.ipv6.conf.all.accept_redirects = 0/net.ipv6.conf.all.accept_redirects = 0/g" /etc/sysctl.conf
  sed -i "s/#net.ipv4.conf.all.send_redirects = 0/net.ipv4.conf.all.send_redirects = 0/g" /etc/sysctl.conf
  sed -i "s/#net.ipv4.conf.all.accept_source_route = 0/net.ipv4.conf.all.accept_source_route = 0/g" /etc/sysctl.conf
  sed -i "s/#net.ipv6.conf.all.accept_source_route = 0/net.ipv6.conf.all.accept_source_route = 0/g" /etc/sysctl.conf
  sed -i "s/#net.ipv4.conf.default.rp_filter=1/net.ipv4.conf.default.rp_filter=1/g" /etc/sysctl.conf
  sed -i "s/#net.ipv4.conf.all.rp_filter=1/net.ipv4.conf.all.rp_filter=1/g" /etc/sysctl.conf
  sed -i "s/#net.ipv4.ip_forward=1/net.ipv4.ip_forward=0/g" /etc/sysctl.conf
  sed -i "s/#net.ipv6.conf.all.forwarding=1/net.ipv6.conf.all.forwarding=0/g" /etc/sysctl.conf
  echo '# ignore pings' >> /etc/sysctl.conf
  echo 'net.ipv4.icmp_echo_ignore_all = 1' >> /etc/sysctl.conf
  echo 'net.ipv6.icmp_echo_ignore_all = 1' >> /etc/sysctl.conf
  echo '# disable ipv6' >> /etc/sysctl.conf
  echo 'net.ipv6.conf.all.disable_ipv6 = 1' >> /etc/sysctl.conf
  echo 'net.ipv4.tcp_synack_retries = 2' >> /etc/sysctl.conf
  echo 'net.ipv4.tcp_syn_retries = 1' >> /etc/sysctl.conf
  echo '# keepalive' >> /etc/sysctl.conf
  echo 'net.ipv4.tcp_keepalive_probes = 9' >> /etc/sysctl.conf
  echo 'net.ipv4.tcp_keepalive_intvl = 75' >> /etc/sysctl.conf
  echo 'net.ipv4.tcp_keepalive_time = 7200' >> /etc/sysctl.conf
  echo 'configure_internet_protocol' >> $COMPLETION_FILE
}

function script_to_make_self_signed_certificates {
  if grep -Fxq "script_to_make_self_signed_certificates" $COMPLETION_FILE; then
      return
  fi
  echo '#!/bin/bash' > /usr/bin/makecert
  echo 'HOSTNAME=$1' >> /usr/bin/makecert
  echo 'COUNTRY_CODE="US"' >> /usr/bin/makecert
  echo 'AREA="Free Speech Zone"' >> /usr/bin/makecert
  echo 'LOCATION="Freedomville"' >> /usr/bin/makecert
  echo 'ORGANISATION="Freedombone"' >> /usr/bin/makecert
  echo 'UNIT="Freedombone Unit"' >> /usr/bin/makecert
  echo 'if ! which openssl > /dev/null ;then' >> /usr/bin/makecert
  echo '    echo "$0: openssl is not installed, exiting" 1>&2' >> /usr/bin/makecert
  echo '    exit 1' >> /usr/bin/makecert
  echo 'fi' >> /usr/bin/makecert
  echo 'openssl req -x509 -nodes -days 3650 -sha256 -subj "/O=$ORGANISATION/OU=$UNIT/C=$COUNTRY_CODE/ST=$AREA/L=$LOCATION/CN=$HOSTNAME" -newkey rsa:4096 -keyout /etc/ssl/private/$HOSTNAME.key -out /etc/ssl/certs/$HOSTNAME.crt' >> /usr/bin/makecert
  echo 'openssl dhparam -check -text -5 1024 -out /etc/ssl/certs/$HOSTNAME.dhparam' >> /usr/bin/makecert
  echo 'chmod 400 /etc/ssl/private/$HOSTNAME.key' >> /usr/bin/makecert
  echo 'chmod 640 /etc/ssl/certs/$HOSTNAME.crt' >> /usr/bin/makecert
  echo 'chmod 640 /etc/ssl/certs/$HOSTNAME.dhparam' >> /usr/bin/makecert
  echo 'if [ -f /etc/init.d/nginx ]; then' >> /usr/bin/makecert
  echo '  /etc/init.d/nginx reload' >> /usr/bin/makecert
  echo 'fi' >> /usr/bin/makecert
  echo '# add the public certificate to a separate directory' >> /usr/bin/makecert
  echo '# so that we can redistribute it easily' >> /usr/bin/makecert
  echo 'if [ ! -d /etc/ssl/mycerts ]; then' >> /usr/bin/makecert
  echo '  mkdir /etc/ssl/mycerts' >> /usr/bin/makecert
  echo 'fi' >> /usr/bin/makecert
  echo 'cp /etc/ssl/certs/$HOSTNAME.crt /etc/ssl/mycerts' >> /usr/bin/makecert
  echo '# Create a bundle of your certificates' >> /usr/bin/makecert
  echo 'cat /etc/ssl/mycerts/*.crt > /etc/ssl/freedombone-bundle.crt' >> /usr/bin/makecert
  echo 'tar -czvf /etc/ssl/freedombone-certs.tar.gz /etc/ssl/mycerts/*.crt' >> /usr/bin/makecert
  chmod +x /usr/bin/makecert
  echo 'script_to_make_self_signed_certificates' >> $COMPLETION_FILE
}

function configure_email {
  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" ]]; then
      return
  fi
  if grep -Fxq "configure_email" $COMPLETION_FILE; then
      return
  fi
  apt-get -y remove postfix
  apt-get -y --force-yes install exim4 sasl2-bin swaks libnet-ssleay-perl procmail

  if [ ! -d /etc/exim4 ]; then
      echo "ERROR: Exim does not appear to have installed. $CHECK_MESSAGE"
      exit 48
  fi

  # configure for Maildir format
  sed -i 's/MAIL_DIR/#MAIL_DIR/g' /etc/login.defs
  sed -i 's|#MAIL_FILE.*|MAIL_FILE Maildir/|g' /etc/login.defs

  if ! grep -q "export MAIL" /etc/profile; then
      echo 'export MAIL=~/Maildir' >> /etc/profile
  fi

  sed -i 's|pam_mail.so standard|pam_mail.so dir=~/Maildir standard|g' /etc/pam.d/login
  sed -i 's|pam_mail.so standard noenv|pam_mail.so dir=~/Maildir standard|g' /etc/pam.d/sshd
  sed -i 's|pam_mail.so nopen|pam_mail.so dir=~/Maildir nopen|g' /etc/pam.d/su

  echo 'dc_eximconfig_configtype="internet"' > /etc/exim4/update-exim4.conf.conf
  echo "dc_other_hostnames='$DOMAIN_NAME'" >> /etc/exim4/update-exim4.conf.conf
  echo "dc_local_interfaces=''" >> /etc/exim4/update-exim4.conf.conf
  echo "dc_readhost=''" >> /etc/exim4/update-exim4.conf.conf
  echo "dc_relay_domains=''" >> /etc/exim4/update-exim4.conf.conf
  echo "dc_minimaldns='false'" >> /etc/exim4/update-exim4.conf.conf
  echo "dc_relay_nets='192.168.1.0/24'" >> /etc/exim4/update-exim4.conf.conf
  echo "dc_smarthost=''" >> /etc/exim4/update-exim4.conf.conf
  echo "CFILEMODE='644'" >> /etc/exim4/update-exim4.conf.conf
  echo "dc_use_split_config='false'" >> /etc/exim4/update-exim4.conf.conf
  echo "dc_hide_mailname=''" >> /etc/exim4/update-exim4.conf.conf
  echo "dc_mailname_in_oh='true'" >> /etc/exim4/update-exim4.conf.conf
  echo "dc_localdelivery='maildir_home'" >> /etc/exim4/update-exim4.conf.conf
  update-exim4.conf
  sed -i "s/START=no/START=yes/g" /etc/default/saslauthd
  /etc/init.d/saslauthd start

  # make a tls certificate for email
  if [ ! -f /etc/ssl/private/exim.key ]; then
      makecert exim
  fi
  cp /etc/ssl/private/exim.key /etc/exim4
  cp /etc/ssl/certs/exim.crt /etc/exim4
  cp /etc/ssl/certs/exim.dhparam /etc/exim4
  chown root:Debian-exim /etc/exim4/exim.key /etc/exim4/exim.crt /etc/exim4/exim.dhparam
  chmod 640 /etc/exim4/exim.key /etc/exim4/exim.crt /etc/exim4/exim.dhparam

  sed -i '/login_saslauthd_server/,/.endif/ s/# *//' /etc/exim4/exim4.conf.template
  sed -i "/.ifdef MAIN_HARDCODE_PRIMARY_HOSTNAME/i\MAIN_HARDCODE_PRIMARY_HOSTNAME = $DOMAIN_NAME\nMAIN_TLS_ENABLE = true" /etc/exim4/exim4.conf.template
  sed -i "s|SMTPLISTENEROPTIONS=''|SMTPLISTENEROPTIONS='-oX 465:25:587 -oP /var/run/exim4/exim.pid'|g" /etc/default/exim4
  if ! grep -q "tls_on_connect_ports=465" /etc/exim4/exim4.conf.template; then
    sed -i '/SSL configuration for exim/i\tls_on_connect_ports=465' /etc/exim4/exim4.conf.template
  fi

  adduser $MY_USERNAME sasl
  addgroup Debian-exim sasl
  /etc/init.d/exim4 restart
  if [ ! -d /etc/skel/Maildir ]; then
    mkdir -m 700 /etc/skel/Maildir
    mkdir -m 700 /etc/skel/Maildir/Sent
    mkdir -m 700 /etc/skel/Maildir/Sent/tmp
    mkdir -m 700 /etc/skel/Maildir/Sent/cur
    mkdir -m 700 /etc/skel/Maildir/Sent/new
    mkdir -m 700 /etc/skel/Maildir/.learn-spam
    mkdir -m 700 /etc/skel/Maildir/.learn-spam/cur
    mkdir -m 700 /etc/skel/Maildir/.learn-spam/new
    mkdir -m 700 /etc/skel/Maildir/.learn-spam/tmp
    mkdir -m 700 /etc/skel/Maildir/.learn-ham
    mkdir -m 700 /etc/skel/Maildir/.learn-ham/cur
    mkdir -m 700 /etc/skel/Maildir/.learn-ham/new
    mkdir -m 700 /etc/skel/Maildir/.learn-ham/tmp
    ln -s /etc/skel/Maildir/.learn-spam /etc/skel/Maildir/spam
    ln -s /etc/skel/Maildir/.learn-ham /etc/skel/Maildir/ham
  fi

  if [ ! -d /home/$MY_USERNAME/Maildir ]; then
    mkdir -m 700 /home/$MY_USERNAME/Maildir
    mkdir -m 700 /home/$MY_USERNAME/Maildir/cur
    mkdir -m 700 /home/$MY_USERNAME/Maildir/tmp
    mkdir -m 700 /home/$MY_USERNAME/Maildir/new
    mkdir -m 700 /home/$MY_USERNAME/Maildir/Sent
    mkdir -m 700 /home/$MY_USERNAME/Maildir/Sent/cur
    mkdir -m 700 /home/$MY_USERNAME/Maildir/Sent/tmp
    mkdir -m 700 /home/$MY_USERNAME/Maildir/Sent/new
    mkdir -m 700 /home/$MY_USERNAME/Maildir/.learn-spam
    mkdir -m 700 /home/$MY_USERNAME/Maildir/.learn-spam/cur
    mkdir -m 700 /home/$MY_USERNAME/Maildir/.learn-spam/new
    mkdir -m 700 /home/$MY_USERNAME/Maildir/.learn-spam/tmp
    mkdir -m 700 /home/$MY_USERNAME/Maildir/.learn-ham
    mkdir -m 700 /home/$MY_USERNAME/Maildir/.learn-ham/cur
    mkdir -m 700 /home/$MY_USERNAME/Maildir/.learn-ham/new
    mkdir -m 700 /home/$MY_USERNAME/Maildir/.learn-ham/tmp
    ln -s /home/$MY_USERNAME/Maildir/.learn-spam /home/$MY_USERNAME/Maildir/spam
    ln -s /home/$MY_USERNAME/Maildir/.learn-ham /home/$MY_USERNAME/Maildir/ham
    chown -R $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/Maildir
  fi
  echo 'configure_email' >> $COMPLETION_FILE
}

function create_procmail {
  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" ]]; then
      return
  fi
  if grep -Fxq "create_procmail" $COMPLETION_FILE; then
      return
  fi
  if [ ! -f /home/$MY_USERNAME/.procmailrc ]; then
      echo 'MAILDIR=$HOME/Maildir' > /home/$MY_USERNAME/.procmailrc
      echo 'DEFAULT=$MAILDIR/' >> /home/$MY_USERNAME/.procmailrc
      echo 'LOGFILE=$HOME/log/procmail.log' >> /home/$MY_USERNAME/.procmailrc
      echo 'LOGABSTRACT=all' >> /home/$MY_USERNAME/.procmailrc
  fi
  echo 'create_procmail' >> $COMPLETION_FILE
}

function spam_filtering {
  # NOTE: spamassassin installation currently doesn't work, sa-compile fails with a make error 23/09/2014
  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" ]]; then
      return
  fi
  if grep -Fxq "spam_filtering" $COMPLETION_FILE; then
      return
  fi
  apt-get -y --force-yes install exim4-daemon-heavy
  apt-get -y --force-yes install spamassassin
  sa-update -v
  sed -i 's/ENABLED=0/ENABLED=1/g' /etc/default/spamassassin
  sed -i 's/# spamd_address = 127.0.0.1 783/spamd_address = 127.0.0.1 783/g' /etc/exim4/exim4.conf.template
  # This configuration is based on https://wiki.debian.org/DebianSpamAssassin
  sed -i 's/local_parts = postmaster/local_parts = postmaster:abuse/g' /etc/exim4/conf.d/acl/30_exim4-config_check_rcpt
  sed -i '/domains = +local_domains : +relay_to_domains/a\    set acl_m0 = rfcnames' /etc/exim4/conf.d/acl/30_exim4-config_check_rcpt
  sed -i 's/accept/accept condition = ${if eq{$acl_m0}{rfcnames} {1}{0}}/g' /etc/exim4/conf.d/acl/40_exim4-config_check_data
  echo 'warn  message = X-Spam-Score: $spam_score ($spam_bar)' >> /etc/exim4/conf.d/acl/40_exim4-config_check_data
  echo '      spam = nobody:true' >> /etc/exim4/conf.d/acl/40_exim4-config_check_data
  echo 'warn  message = X-Spam-Flag: YES' >> /etc/exim4/conf.d/acl/40_exim4-config_check_data
  echo '      spam = nobody' >> /etc/exim4/conf.d/acl/40_exim4-config_check_data
  echo 'warn  message = X-Spam-Report: $spam_report' >> /etc/exim4/conf.d/acl/40_exim4-config_check_data
  echo '      spam = nobody' >> /etc/exim4/conf.d/acl/40_exim4-config_check_data
  echo '# reject spam at high scores (> 12)' >> /etc/exim4/conf.d/acl/40_exim4-config_check_data
  echo 'deny  message = This message scored $spam_score spam points.' >> /etc/exim4/conf.d/acl/40_exim4-config_check_data
  echo '      spam = nobody:true' >> /etc/exim4/conf.d/acl/40_exim4-config_check_data
  echo '      condition = ${if >{$spam_score_int}{120}{1}{0}}' >> /etc/exim4/conf.d/acl/40_exim4-config_check_data
  # procmail configuration
  echo '# get spamassassin to check emails' >> /home/$MY_USERNAME/.procmailrc
  echo ':0fw: .spamassassin.lock' >> /home/$MY_USERNAME/.procmailrc
  echo '  * < 256000' >> /home/$MY_USERNAME/.procmailrc
  echo '| spamc' >> /home/$MY_USERNAME/.procmailrc
  echo '# strong spam are discarded' >> /home/$MY_USERNAME/.procmailrc
  echo ':0' >> /home/$MY_USERNAME/.procmailrc
  echo '  * ^X-Spam-Level: \*\*\*\*\*\*' >> /home/$MY_USERNAME/.procmailrc
  echo '/dev/null' >> /home/$MY_USERNAME/.procmailrc
  echo '# weak spam are kept just in case - clear this out every now and then' >> /home/$MY_USERNAME/.procmailrc
  echo ':0' >> /home/$MY_USERNAME/.procmailrc
  echo '  * ^X-Spam-Level: \*\*\*\*\*' >> /home/$MY_USERNAME/.procmailrc
  echo '.0-spam/' >> /home/$MY_USERNAME/.procmailrc
  echo '# otherwise, marginal spam goes here for revision' >> /home/$MY_USERNAME/.procmailrc
  echo ':0' >> /home/$MY_USERNAME/.procmailrc
  echo '  * ^X-Spam-Level: \*\*' >> /home/$MY_USERNAME/.procmailrc
  echo '.spam/' >> /home/$MY_USERNAME/.procmailrc
  chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.procmailrc
  # filtering scripts
  echo '#!/bin/bash' > /usr/bin/filterspam
  echo 'USERNAME=$1' >> /usr/bin/filterspam
  echo 'MAILDIR=/home/$USERNAME/Maildir/.learn-spam' >> /usr/bin/filterspam
  echo 'if [ ! -d "$MAILDIR" ]; then' >> /usr/bin/filterspam
  echo '    exit' >> /usr/bin/filterspam
  echo 'fi' >> /usr/bin/filterspam
  echo 'for f in `ls $MAILDIR/cur`' >> /usr/bin/filterspam
  echo 'do' >> /usr/bin/filterspam
  echo '    spamc -L spam < "$MAILDIR/cur/$f" > /dev/null' >> /usr/bin/filterspam
  echo '    rm "$MAILDIR/cur/$f"' >> /usr/bin/filterspam
  echo 'done' >> /usr/bin/filterspam
  echo 'for f in `ls $MAILDIR/new`' >> /usr/bin/filterspam
  echo 'do' >> /usr/bin/filterspam
  echo '    spamc -L spam < "$MAILDIR/new/$f" > /dev/null' >> /usr/bin/filterspam
  echo '    rm "$MAILDIR/new/$f"' >> /usr/bin/filterspam
  echo 'done' >> /usr/bin/filterspam

  echo '#!/bin/bash' > /usr/bin/filterham
  echo 'USERNAME=$1' >> /usr/bin/filterham
  echo 'MAILDIR=/home/$USERNAME/Maildir/.learn-ham' >> /usr/bin/filterham
  echo 'if [ ! -d "$MAILDIR" ]; then' >> /usr/bin/filterham
  echo '    exit' >> /usr/bin/filterham
  echo 'fi' >> /usr/bin/filterham
  echo 'for f in `ls $MAILDIR/cur`' >> /usr/bin/filterham
  echo 'do' >> /usr/bin/filterham
  echo '    spamc -L ham < "$MAILDIR/cur/$f" > /dev/null' >> /usr/bin/filterham
  echo '    rm "$MAILDIR/cur/$f"' >> /usr/bin/filterham
  echo 'done' >> /usr/bin/filterham
  echo 'for f in `ls $MAILDIR/new`' >> /usr/bin/filterham
  echo 'do' >> /usr/bin/filterham
  echo '    spamc -L ham < "$MAILDIR/new/$f" > /dev/null' >> /usr/bin/filterham
  echo '    rm "$MAILDIR/new/$f"' >> /usr/bin/filterham
  echo 'done' >> /usr/bin/filterham

  if ! grep -q "filterspam" /etc/crontab; then
    echo "*/3 * * * * root /usr/bin/timeout 120 /usr/bin/filterspam $MY_USERNAME" >> /etc/crontab
  fi
  if ! grep -q "filterham" /etc/crontab; then
    echo "*/3 * * * * root /usr/bin/timeout 120 /usr/bin/filterham $MY_USERNAME" >> /etc/crontab
  fi
  chmod 655 /usr/bin/filterspam /usr/bin/filterham
  sed -i 's/# use_bayes 1/use_bayes 1/g' /etc/mail/spamassassin/local.cf
  sed -i 's/# bayes_auto_learn 1/bayes_auto_learn 1/g' /etc/mail/spamassassin/local.cf

  service spamassassin restart
  service exim4 restart
  service cron restart
  echo 'spam_filtering' >> $COMPLETION_FILE
}

function configure_imap {
  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" ]]; then
      return
  fi
  if grep -Fxq "configure_imap" $COMPLETION_FILE; then
      return
  fi
  apt-get -y --force-yes install dovecot-common dovecot-imapd

  if [ ! -d /etc/dovecot ]; then
      echo "ERROR: Dovecot does not appear to have installed. $CHECK_MESSAGE"
      exit 48
  fi

  if [ ! -f /etc/ssl/private/dovecot.key ]; then
      makecert dovecot
  fi
  chown root:dovecot /etc/ssl/certs/dovecot.*
  chown root:dovecot /etc/ssl/private/dovecot.*

  sed -i 's|#ssl = yes|ssl = required|g' /etc/dovecot/conf.d/10-ssl.conf
  sed -i 's|ssl_cert = </etc/dovecot/dovecot.pem|ssl_cert = </etc/ssl/certs/dovecot.crt|g' /etc/dovecot/conf.d/10-ssl.conf
  sed -i 's|ssl_key = </etc/dovecot/private/dovecot.pem|ssl_key = </etc/ssl/private/dovecot.key|g' /etc/dovecot/conf.d/10-ssl.conf
  sed -i 's|#ssl_dh_parameters_length = 1024|ssl_dh_parameters_length = 1024|g' /etc/dovecot/conf.d/10-ssl.conf
  sed -i 's/#ssl_prefer_server_ciphers = no/ssl_prefer_server_ciphers = yes/g' /etc/dovecot/conf.d/10-ssl.conf
  echo "ssl_cipher_list = '$SSL_CIPHERS'" >> /etc/dovecot/conf.d/10-ssl.conf


  sed -i 's/#auth_verbose = no/auth_verbose = yes/g' /etc/dovecot/conf.d/10-logging.conf

  sed -i 's/#listen = *, ::/listen = */g' /etc/dovecot/dovecot.conf
  sed -i 's/#disable_plaintext_auth = yes/disable_plaintext_auth = no/g' /etc/dovecot/conf.d/10-auth.conf
  sed -i 's/auth_mechanisms = plain/auth_mechanisms = plain login/g' /etc/dovecot/conf.d/10-auth.conf
  sed -i 's|mail_location = mbox:~/mail:INBOX=/var/mail/%u|mail_location = maildir:~/Maildir:LAYOUT=fs|g' /etc/dovecot/conf.d/10-mail.conf
  echo 'configure_imap' >> $COMPLETION_FILE
}

function configure_gpg {
  if grep -Fxq "configure_gpg" $COMPLETION_FILE; then
      return
  fi
  apt-get -y --force-yes install gnupg

  # if gpg keys directory was previously imported from usb
  if [[ $GPG_KEYS_IMPORTED == "yes" && -d /home/$MY_USERNAME/.gnupg ]]; then
      sed -i "s|keyserver hkp://keys.gnupg.net|keyserver $GPG_KEYSERVER|g" /home/$MY_USERNAME/.gnupg/gpg.conf
      MY_GPG_PUBLIC_KEY_ID=$(su -c "gpg --list-keys $MY_EMAIL_ADDRESS | grep 'pub '" - $MY_USERNAME | awk -F ' ' '{print $2}' | awk -F '/' '{print $2}')
      echo 'configure_gpg' >> $COMPLETION_FILE
      return
  fi

  if [ ! -d /home/$MY_USERNAME/.gnupg ]; then
      mkdir /home/$MY_USERNAME/.gnupg
      echo 'keyserver hkp://keys.gnupg.net' >> /home/$MY_USERNAME/.gnupg/gpg.conf
      echo 'keyserver-options auto-key-retrieve' >> /home/$MY_USERNAME/.gnupg/gpg.conf
  fi

  sed -i "s|keyserver hkp://keys.gnupg.net|keyserver $GPG_KEYSERVER|g" /home/$MY_USERNAME/.gnupg/gpg.conf

  if ! grep -q "# default preferences" /home/$MY_USERNAME/.gnupg/gpg.conf; then
      echo '' >> /home/$MY_USERNAME/.gnupg/gpg.conf
      echo '# default preferences' >> /home/$MY_USERNAME/.gnupg/gpg.conf
      echo 'personal-digest-preferences SHA256' >> /home/$MY_USERNAME/.gnupg/gpg.conf
      echo 'cert-digest-algo SHA256' >> /home/$MY_USERNAME/.gnupg/gpg.conf
      echo 'default-preference-list SHA512 SHA384 SHA256 SHA224 AES256 AES192 AES CAST5 ZLIB BZIP2 ZIP Uncompressed' >> /home/$MY_USERNAME/.gnupg/gpg.conf
  fi

  chown -R $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.gnupg

  if [[ $MY_GPG_PUBLIC_KEY && $MY_GPG_PRIVATE_KEY ]]; then
      # use your existing GPG keys which were exported
      if [ ! -f $MY_GPG_PUBLIC_KEY ]; then
          echo "GPG public key file $MY_GPG_PUBLIC_KEY was not found"
          exit 5
      fi
      if [ ! -f $MY_GPG_PRIVATE_KEY ]; then
          echo "GPG private key file $MY_GPG_PRIVATE_KEY was not found"
          exit 6
      fi
      su -c "gpg --import $MY_GPG_PUBLIC_KEY" - $MY_USERNAME
      su -c "gpg --allow-secret-key-import --import $MY_GPG_PRIVATE_KEY" - $MY_USERNAME
      # for security ensure that the private key file doesn't linger around
      shred -zu $MY_GPG_PRIVATE_KEY
      MY_GPG_PUBLIC_KEY_ID=$(su -c "gpg --list-keys $MY_EMAIL_ADDRESS | grep 'pub '" - $MY_USERNAME | awk -F ' ' '{print $2}' | awk -F '/' '{print $2}')
  else
      # Generate a GPG key
      echo 'Key-Type: 1' > /home/$MY_USERNAME/gpg-genkey.conf
      echo 'Key-Length: 4096' >> /home/$MY_USERNAME/gpg-genkey.conf
      echo 'Subkey-Type: 1' >> /home/$MY_USERNAME/gpg-genkey.conf
      echo 'Subkey-Length: 4096' >> /home/$MY_USERNAME/gpg-genkey.conf
      echo "Name-Real:  $MY_EMAIL_ADDRESS" >> /home/$MY_USERNAME/gpg-genkey.conf
      echo "Name-Email: $MY_EMAIL_ADDRESS" >> /home/$MY_USERNAME/gpg-genkey.conf
      echo 'Expire-Date: 0' >> /home/$MY_USERNAME/gpg-genkey.conf
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/gpg-genkey.conf
      su -c "gpg --batch --gen-key /home/$MY_USERNAME/gpg-genkey.conf" - $MY_USERNAME
      shred -zu /home/$MY_USERNAME/gpg-genkey.conf
      MY_GPG_PUBLIC_KEY_ID=$(su -c "gpg --list-keys $MY_EMAIL_ADDRESS | grep 'pub '" - $MY_USERNAME | awk -F ' ' '{print $2}' | awk -F '/' '{print $2}')
      MY_GPG_PUBLIC_KEY=/tmp/public_key.gpg
      su -c "gpg --output $MY_GPG_PUBLIC_KEY --armor --export $MY_GPG_PUBLIC_KEY_ID" - $MY_USERNAME
  fi

  echo 'configure_gpg' >> $COMPLETION_FILE
}

function encrypt_incoming_email {
  # encrypts incoming mail using your GPG public key
  # so even if an attacker gains access to the data at rest they still need
  # to know your GPG key password to be able to read anything
  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" ]]; then
      return
  fi
  if grep -Fxq "encrypt_incoming_email" $COMPLETION_FILE; then
      return
  fi
  if [[ $GPG_ENCRYPT_STORED_EMAIL != "yes" ]]; then
      return
  fi
  if [ ! -f /usr/bin/gpgit.pl ]; then
      apt-get -y --force-yes install git libmail-gnupg-perl
      cd $INSTALL_DIR
      git clone https://github.com/mikecardwell/gpgit
      cd gpgit
      cp gpgit.pl /usr/bin
  fi

  # add a procmail rule
  if ! grep -q "/usr/bin/gpgit.pl" /home/$MY_USERNAME/.procmailrc; then
      echo '' >> /home/$MY_USERNAME/.procmailrc
      echo ':0 f' >> /home/$MY_USERNAME/.procmailrc
      echo "| /usr/bin/gpgit.pl $MY_EMAIL_ADDRESS" >> /home/$MY_USERNAME/.procmailrc
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.procmailrc
  fi
  echo 'encrypt_incoming_email' >> $COMPLETION_FILE
}

function encrypt_outgoing_email {
  # encrypts outgoing mail using your GPG public key
  # so even if an attacker gains access to the data at rest they still need
  # to know your GPG key password to be able to read sent mail
  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" ]]; then
      return
  fi
  if grep -Fxq "encrypt_outgoing_email" $COMPLETION_FILE; then
      return
  fi
  if [[ $GPG_ENCRYPT_STORED_EMAIL != "yes" ]]; then
      return
  fi

  echo 'sent_items_router:' > /etc/exim4/conf.d/router/170_exim4-config_encryptsent
  echo '   driver    = accept' >> /etc/exim4/conf.d/router/170_exim4-config_encryptsent
  echo '   transport = sent_items_transport' >> /etc/exim4/conf.d/router/170_exim4-config_encryptsent
  echo '   condition = ${if !eq{$authenticated_id}{}}' >> /etc/exim4/conf.d/router/170_exim4-config_encryptsent
  echo '   unseen' >> /etc/exim4/conf.d/router/170_exim4-config_encryptsent
  echo '   no_verify' >> /etc/exim4/conf.d/router/170_exim4-config_encryptsent

  # TODO
  echo 'sent_items_transport:'
  echo '   driver           = pipe'
  echo '   user             = $authenticated_id'
  echo '   group            = Debian-exim'
  echo '   temp_errors      = *'
  echo '   transport_filter = /usr/bin/gpgit.pl $sender_address'
  echo '   command          = /usr/bin/pipe2imap.pl --ssl --user master --authas $authenticated_id --passfile /etc/exim4/master_imap_password.txt --folder "Sent Items" --flags "\\seen"'
  echo '   log_defer_output = true'

  service exim4 restart

  echo 'encrypt_outgoing_email' >> $COMPLETION_FILE
}

function encrypt_all_email {
  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" ]]; then
      return
  fi
  if grep -Fxq "encrypt_all_email" $COMPLETION_FILE; then
      return
  fi
  if [[ $GPG_ENCRYPT_STORED_EMAIL != "yes" ]]; then
      return
  fi
  echo '#!/bin/bash' > /usr/bin/encmaildir
  echo '#' >> /usr/bin/encmaildir
  echo '# GPLv2' >> /usr/bin/encmaildir
  echo '# GPG Encrypt a Maildir using gpgit.pl' >> /usr/bin/encmaildir
  echo '# Oct 03, 2014' >> /usr/bin/encmaildir
  echo '#' >> /usr/bin/encmaildir
  echo '# Change log:' >> /usr/bin/encmaildir
  echo '#   Sep 03, 2011' >> /usr/bin/encmaildir
  echo '#     - Temporary file is based on file_owner to avoid' >> /usr/bin/encmaildir
  echo '#        issues with permission differences.' >> /usr/bin/encmaildir
  echo '#     - Temporary file is removed after run.' >> /usr/bin/encmaildir
  echo '#     - Optional arguments passed to "find".' >> /usr/bin/encmaildir
  echo '#     - Full paths to binaries.' >> /usr/bin/encmaildir
  echo '#     - Removed unneccessary need of "cat", "grep", etc.' >> /usr/bin/encmaildir
  echo '#   Sep 04, 2011' >> /usr/bin/encmaildir
  echo '#     - Dont remove Dovecot index/uid unless messages' >> /usr/bin/encmaildir
  echo '#       have been GPG encrypted.' >> /usr/bin/encmaildir
  echo '#     - Adjust file tests to not just use -e' >> /usr/bin/encmaildir
  echo '#     - Quote all file operations' >> /usr/bin/encmaildir
  echo '#   Sep 05, 2011' >> /usr/bin/encmaildir
  echo '#     - Dont arbitrarily copy files, only overwrite the file' >> /usr/bin/encmaildir
  echo '#       in ~/Maildir if it differs after calling gpgencmail.pl' >> /usr/bin/encmaildir
  echo '#     - Only rebuild the index if we have modified ~/Maildir' >> /usr/bin/encmaildir
  echo '#   Oct 03, 2014' >> /usr/bin/encmaildir
  echo '#     - Minor modifications for use with Freedombone' >> /usr/bin/encmaildir
  echo '' >> /usr/bin/encmaildir
  echo 'if [[ -z "$1" || -z "$2" || -z "$3" ]]; then' >> /usr/bin/encmaildir
  echo '  echo "Usage is ./encmaildir.sh    {optional arguments passed to find for messages such as -mtime 0}"' >> /usr/bin/encmaildir
  echo '  exit 0' >> /usr/bin/encmaildir
  echo 'fi' >> /usr/bin/encmaildir
  echo '' >> /usr/bin/encmaildir
  echo 'MAIL_DIR=$1' >> /usr/bin/encmaildir
  echo 'EMAIL_ADDRESS=$2' >> /usr/bin/encmaildir
  echo 'USERNAME=$3' >> /usr/bin/encmaildir
  echo 'if [ ! -d "$MAIL_DIR" ]; then' >> /usr/bin/encmaildir
  echo "  MAIL_DIR='/home/$MY_USERNAME/Maildir'" >> /usr/bin/encmaildir
  echo 'fi' >> /usr/bin/encmaildir
  echo '' >> /usr/bin/encmaildir
  echo 'if [ ! $EMAIL_ADDRESS ]; then' >> /usr/bin/encmaildir
  echo "  EMAIL_ADDRESS='$MY_EMAIL_ADDRESS'" >> /usr/bin/encmaildir
  echo 'fi' >> /usr/bin/encmaildir
  echo '' >> /usr/bin/encmaildir
  echo 'if [ ! $USERNAME ]; then' >> /usr/bin/encmaildir
  echo "  USERNAME='$MY_USERNAME'" >> /usr/bin/encmaildir
  echo 'fi' >> /usr/bin/encmaildir
  echo '' >> /usr/bin/encmaildir
  echo '# Does this key exist?' >> /usr/bin/encmaildir
  echo 'gpg --list-keys "$EMAIL_ADDRESS" > /dev/null 2>&1' >> /usr/bin/encmaildir
  echo 'if [ $? -gt 0 ]; then' >> /usr/bin/encmaildir
  echo '  echo "A GPG key for $EMAIL_ADDRESS could not be found!"' >> /usr/bin/encmaildir
  echo '  exit 0' >> /usr/bin/encmaildir
  echo 'fi' >> /usr/bin/encmaildir
  echo '' >> /usr/bin/encmaildir
  echo '# Find all files in the Maildir specified.' >> /usr/bin/encmaildir
  echo 'echo "Calling find"' >> /usr/bin/encmaildir
  echo -n 'find "$MAIL_DIR" -type f -regex ' >> /usr/bin/encmaildir
  echo -n "'.*/\(cur\|new\)/.*' " >> /usr/bin/encmaildir
  echo '$4|while read line; do' >> /usr/bin/encmaildir
  echo '     gpgit.pl --encrypt-mode prefer-inline "$EMAIL_ADDRESS"  "/tmp/msg_$USERNAME"' >> /usr/bin/encmaildir
  echo '' >> /usr/bin/encmaildir
  echo '     # Check to see if there are differences between the existing' >> /usr/bin/encmaildir
  echo '     # Maildir file and what was created by gpgit.pl' >> /usr/bin/encmaildir
  echo '     diff -qa "$line" "/tmp/msg_$USERNAME" > /dev/null 2>&1;' >> /usr/bin/encmaildir
  echo '     if [ $? -gt 0 ]; then' >> /usr/bin/encmaildir
  echo '       # Preserve timestamps, set ownership.' >> /usr/bin/encmaildir
  echo '       chown $USERNAME:$USERNAME "/tmp/msg_$USERNAME"' >> /usr/bin/encmaildir
  echo '       chmod 600   "/tmp/msg_$USERNAME"' >> /usr/bin/encmaildir
  echo '       touch   "/tmp/msg_$USERNAME" --reference="$line"' >> /usr/bin/encmaildir
  echo '' >> /usr/bin/encmaildir
  echo '       # Unlink the original Maildir message' >> /usr/bin/encmaildir
  echo '       unlink "$line"' >> /usr/bin/encmaildir
  echo '' >> /usr/bin/encmaildir
  echo '       # Strip message sizes, retain experimental flags' >> /usr/bin/encmaildir
  echo '       # and status flags, and copy the file over.' >> /usr/bin/encmaildir
  echo '       STRIPSIZES=$(/bin/echo "$line"|/bin/sed -e "s/W=[[:digit:]]*//" -e "s/S=[[:digit:]]*//" -e "s/,,//" -e "s/,:2/:2/")' >> /usr/bin/encmaildir
  echo '       cp -av "/tmp/msg_$USERNAME" "$STRIPSIZES"' >> /usr/bin/encmaildir
  echo '' >> /usr/bin/encmaildir
  echo '       #Indexes must be rebuilt, weve modified Maildir.' >> /usr/bin/encmaildir
  echo '       touch "/tmp/rebuild_index_$USERNAME"' >> /usr/bin/encmaildir
  echo '     else' >> /usr/bin/encmaildir
  echo '       echo "Not copying, no differences between /tmp/msg_$USERNAME and $line"' >> /usr/bin/encmaildir
  echo '     fi' >> /usr/bin/encmaildir
  echo '' >> /usr/bin/encmaildir
  echo '     # Remove the temporary file' >> /usr/bin/encmaildir
  echo '     unlink "/tmp/msg_$USERNAME"' >> /usr/bin/encmaildir
  echo 'done' >> /usr/bin/encmaildir
  echo '' >> /usr/bin/encmaildir
  echo '# Remove Dovecot index and uids for regeneration.' >> /usr/bin/encmaildir
  echo 'if [ -f "/tmp/rebuild_index_$USERNAME" ]; then' >> /usr/bin/encmaildir
  echo '  echo "Removing Dovecot indexes and uids"' >> /usr/bin/encmaildir
  echo -n '  find "$MAIL_DIR" -type f -regex ' >> /usr/bin/encmaildir
  echo "'.*\(dovecot-\|dovecot\.\|\.uidvalidity\).*' -delete" >> /usr/bin/encmaildir
  echo '' >> /usr/bin/encmaildir
  echo '  # Remove the temporary file' >> /usr/bin/encmaildir
  echo '  unlink "/tmp/rebuild_index_$USERNAME"' >> /usr/bin/encmaildir
  echo 'else' >> /usr/bin/encmaildir
  echo '  echo "No messages found needing GPG encryption, not' >> /usr/bin/encmaildir
  echo '  echo "removing Dovecot indexes and UIDs."' >> /usr/bin/encmaildir
  echo 'fi' >> /usr/bin/encmaildir
  echo 'exit 0' >> /usr/bin/encmaildir
  chmod +x /usr/bin/encmaildir

  if [ ! /home/$MY_USERNAME/README ]; then
      touch /home/$MY_USERNAME/README
  fi
  if ! grep -q "If you have imported legacy email" /home/$MY_USERNAME/README; then
      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'Encrypting legacy email' >> /home/$MY_USERNAME/README
      echo '=======================' >> /home/$MY_USERNAME/README
      echo 'If you have imported legacy email which is not encrypted' >> /home/$MY_USERNAME/README
      echo 'then it can be encrypted with the command:' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo '  encmaildir' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'But be warned that depending upon how much email you have' >> /home/$MY_USERNAME/README
      echo 'this could take a seriously LONG time on the Beaglebone' >> /home/$MY_USERNAME/README
      echo 'and may be better done on a faster machine.' >> /home/$MY_USERNAME/README
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
  fi

  echo 'encrypt_all_email' >> $COMPLETION_FILE
}

function email_client {
  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" ]]; then
      return
  fi
  if grep -Fxq "email_client" $COMPLETION_FILE; then
      return
  fi
  apt-get -y --force-yes install mutt-patched lynx abook

  if [ ! -f /etc/Muttrc ]; then
      echo "ERROR: Mutt does not appear to have installed. $CHECK_MESSAGE"
      exit 49
  fi

  if [ ! -d /home/$MY_USERNAME/.mutt ]; then
    mkdir /home/$MY_USERNAME/.mutt
  fi
  echo "text/html; lynx -dump -width=78 -nolist %s | sed ‘s/^ //’; copiousoutput; needsterminal; nametemplate=%s.html" > /home/$MY_USERNAME/.mutt/mailcap
  chown -R $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.mutt


  echo 'set mbox_type=Maildir' >> /etc/Muttrc
  echo 'set folder="~/Maildir"' >> /etc/Muttrc
  echo 'set mask="!^\\.[^.]"' >> /etc/Muttrc
  echo 'set mbox="~/Maildir"' >> /etc/Muttrc
  echo 'set record="+Sent"' >> /etc/Muttrc
  echo 'set postponed="+Drafts"' >> /etc/Muttrc
  echo 'set trash="+Trash"' >> /etc/Muttrc
  echo 'set spoolfile="~/Maildir"' >> /etc/Muttrc
  echo 'auto_view text/x-vcard text/html text/enriched' >> /etc/Muttrc
  echo 'set editor="emacs"' >> /etc/Muttrc
  echo 'set header_cache="+.cache"' >> /etc/Muttrc
  echo '' >> /etc/Muttrc
  echo 'macro index S "<tag-prefix><save-message>=.learn-spam<enter>" "move to learn-spam"' >> /etc/Muttrc
  echo 'macro pager S "<save-message>=.learn-spam<enter>" "move to learn-spam"' >> /etc/Muttrc
  echo 'macro index H "<tag-prefix><copy-message>=.learn-ham<enter>" "copy to learn-ham"' >> /etc/Muttrc
  echo 'macro pager H "<copy-message>=.learn-ham<enter>" "copy to learn-ham"' >> /etc/Muttrc
  echo '' >> /etc/Muttrc
  echo '# set up the sidebar' >> /etc/Muttrc
  echo 'set sidebar_width=12' >> /etc/Muttrc
  echo 'set sidebar_visible=yes' >> /etc/Muttrc
  echo "set sidebar_delim='|'" >> /etc/Muttrc
  echo 'set sidebar_sort=yes' >> /etc/Muttrc
  echo '' >> /etc/Muttrc
  echo 'set rfc2047_parameters' >> /etc/Muttrc
  echo '' >> /etc/Muttrc
  echo '# Show inbox and sent items' >> /etc/Muttrc
  echo 'mailboxes = =Sent' >> /etc/Muttrc
  echo '' >> /etc/Muttrc
  echo '# Alter these colours as needed for maximum bling' >> /etc/Muttrc
  echo 'color sidebar_new yellow default' >> /etc/Muttrc
  echo 'color normal white default' >> /etc/Muttrc
  echo 'color hdrdefault brightcyan default' >> /etc/Muttrc
  echo 'color signature green default' >> /etc/Muttrc
  echo 'color attachment brightyellow default' >> /etc/Muttrc
  echo 'color quoted green default' >> /etc/Muttrc
  echo 'color quoted1 white default' >> /etc/Muttrc
  echo 'color tilde blue default' >> /etc/Muttrc
  echo '' >> /etc/Muttrc
  echo '# ctrl-n, ctrl-p to select next, prev folder' >> /etc/Muttrc
  echo '# ctrl-o to open selected folder' >> /etc/Muttrc
  echo 'bind index \Cp sidebar-prev' >> /etc/Muttrc
  echo 'bind index \Cn sidebar-next' >> /etc/Muttrc
  echo 'bind index \Co sidebar-open' >> /etc/Muttrc
  echo 'bind pager \Cp sidebar-prev' >> /etc/Muttrc
  echo 'bind pager \Cn sidebar-next' >> /etc/Muttrc
  echo 'bind pager \Co sidebar-open' >> /etc/Muttrc
  echo '' >> /etc/Muttrc
  echo '# ctrl-b toggles sidebar visibility' >> /etc/Muttrc
  echo "macro index,pager \Cb '<enter-command>toggle sidebar_visible<enter><redraw-screen>' 'toggle sidebar'" >> /etc/Muttrc
  echo '' >> /etc/Muttrc
  echo '# esc-m Mark new messages as read' >> /etc/Muttrc
  echo 'macro index <esc>m "T~N<enter>;WNT~O<enter>;WO\CT~T<enter>" "mark all messages read"' >> /etc/Muttrc
  echo '' >> /etc/Muttrc
  echo '# Collapsing threads' >> /etc/Muttrc
  echo 'macro index [ "<collapse-thread>" "collapse/uncollapse thread"' >> /etc/Muttrc
  echo 'macro index ] "<collapse-all>"    "collapse/uncollapse all threads"' >> /etc/Muttrc
  echo '' >> /etc/Muttrc
  echo '# threads containing new messages' >> /etc/Muttrc
  echo 'uncolor index "~(~N)"' >> /etc/Muttrc
  echo 'color index brightblue default "~(~N)"' >> /etc/Muttrc
  echo '' >> /etc/Muttrc
  echo '# new messages themselves' >> /etc/Muttrc
  echo 'uncolor index "~N"' >> /etc/Muttrc
  echo 'color index brightyellow default "~N"' >> /etc/Muttrc
  echo '' >> /etc/Muttrc
  echo '# GPG/PGP integration' >> /etc/Muttrc
  echo '# this set the number of seconds to keep in memory the passphrase used to encrypt/sign' >> /etc/Muttrc
  echo 'set pgp_timeout=1800' >> /etc/Muttrc
  echo '' >> /etc/Muttrc
  echo '# automatically sign and encrypt with PGP/MIME' >> /etc/Muttrc
  echo 'set pgp_autosign         # autosign all outgoing mails' >> /etc/Muttrc
  echo 'set pgp_autoencrypt      # Try to encrypt automatically' >> /etc/Muttrc
  echo 'set pgp_replyencrypt     # autocrypt replies to crypted' >> /etc/Muttrc
  echo 'set pgp_replysign        # autosign replies to signed' >> /etc/Muttrc
  echo 'set pgp_auto_decode=yes  # decode attachments' >> /etc/Muttrc
  echo 'set fcc_clear            # Keep cleartext copy of sent encrypted mail' >> /etc/Muttrc
  echo 'unset smime_is_default' >> /etc/Muttrc
  echo '' >> /etc/Muttrc
  echo 'set alias_file=~/.mutt-alias' >> /etc/Muttrc
  echo 'source ~/.mutt-alias' >> /etc/Muttrc
  echo 'set query_command= "abook --mutt-query \"%s\""' >> /etc/Muttrc
  echo 'macro index,pager A "<pipe-message>abook --add-email-quiet<return>" "add the sender address to abook"' >> /etc/Muttrc

  cp -f /etc/Muttrc /home/$MY_USERNAME/.muttrc
  touch /home/$MY_USERNAME/.mutt-alias
  chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.muttrc
  chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/.mutt-alias

  echo 'email_client' >> $COMPLETION_FILE
}

function folders_for_mailing_lists {
  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" ]]; then
      return
  fi
  if grep -Fxq "folders_for_mailing_lists" $COMPLETION_FILE; then
      return
  fi
  echo '#!/bin/bash' > /usr/bin/addmailinglist
  echo 'MYUSERNAME=$1' >> /usr/bin/addmailinglist
  echo 'MAILINGLIST=$2' >> /usr/bin/addmailinglist
  echo 'SUBJECTTAG=$3' >> /usr/bin/addmailinglist
  echo 'MUTTRC=/home/$MYUSERNAME/.muttrc' >> /usr/bin/addmailinglist
  echo 'PM=/home/$MYUSERNAME/.procmailrc' >> /usr/bin/addmailinglist
  echo 'LISTDIR=/home/$MYUSERNAME/Maildir/$MAILINGLIST' >> /usr/bin/addmailinglist
  echo '' >> /usr/bin/addmailinglist
  echo '# Exit if the list was already added' >> /usr/bin/addmailinglist
  echo 'if grep -q "=$MAILINGLIST" $MUTTRC; then' >> /usr/bin/addmailinglist
  echo '  exit 1' >> /usr/bin/addmailinglist
  echo 'fi' >> /usr/bin/addmailinglist
  echo '' >> /usr/bin/addmailinglist
  echo 'if ! [[ $MYUSERNAME && $MAILINGLIST && $SUBJECTTAG ]]; then' >> /usr/bin/addmailinglist
  echo '  echo "mailinglistsrule [user name] [mailing list name] [subject tag]"' >> /usr/bin/addmailinglist
  echo '  exit 1' >> /usr/bin/addmailinglist
  echo 'fi' >> /usr/bin/addmailinglist
  echo '' >> /usr/bin/addmailinglist
  echo 'if [ ! -d "$LISTDIR" ]; then' >> /usr/bin/addmailinglist
  echo '  mkdir -m 700 $LISTDIR' >> /usr/bin/addmailinglist
  echo '  mkdir -m 700 $LISTDIR/tmp' >> /usr/bin/addmailinglist
  echo '  mkdir -m 700 $LISTDIR/new' >> /usr/bin/addmailinglist
  echo '  mkdir -m 700 $LISTDIR/cur' >> /usr/bin/addmailinglist
  echo 'fi' >> /usr/bin/addmailinglist
  echo '' >> /usr/bin/addmailinglist
  echo 'chown -R $MYUSERNAME:$MYUSERNAME $LISTDIR' >> /usr/bin/addmailinglist
  echo 'echo "" >> $PM' >> /usr/bin/addmailinglist
  echo 'echo ":0" >> $PM' >> /usr/bin/addmailinglist
  echo 'echo "  * ^Subject:.*()\[$SUBJECTTAG\]" >> $PM' >> /usr/bin/addmailinglist
  echo 'echo "$LISTDIR/new" >> $PM' >> /usr/bin/addmailinglist
  echo 'chown $MYUSERNAME:$MYUSERNAME $PM' >> /usr/bin/addmailinglist
  echo '' >> /usr/bin/addmailinglist
  echo 'if [ ! -f "$MUTTRC" ]; then' >> /usr/bin/addmailinglist
  echo '  cp /etc/Muttrc $MUTTRC' >> /usr/bin/addmailinglist
  echo '  chown $MYUSERNAME:$MYUSERNAME $MUTTRC' >> /usr/bin/addmailinglist
  echo 'fi' >> /usr/bin/addmailinglist
  echo '' >> /usr/bin/addmailinglist
  echo 'PROCMAILLOG=/home/$MYUSERNAME/log' >> /usr/bin/addmailinglist
  echo 'if [ ! -d $PROCMAILLOG ]; then' >> /usr/bin/addmailinglist
  echo '  mkdir $PROCMAILLOG' >> /usr/bin/addmailinglist
  echo '  chown -R $MYUSERNAME:$MYUSERNAME $PROCMAILLOG' >> /usr/bin/addmailinglist
  echo 'fi' >> /usr/bin/addmailinglist
  echo '' >> /usr/bin/addmailinglist
  echo 'MUTT_MAILBOXES=$(grep "mailboxes =" $MUTTRC)' >> /usr/bin/addmailinglist
  echo 'if [[ $MUTT_MAILBOXES != *$MAILINGLIST* ]]; then' >> /usr/bin/addmailinglist
  echo '  sed -i "s|$MUTT_MAILBOXES|$MUTT_MAILBOXES =$MAILINGLIST|g" $MUTTRC' >> /usr/bin/addmailinglist
  echo '  chown $MYUSERNAME:$MYUSERNAME $MUTTRC' >> /usr/bin/addmailinglist
  echo 'fi' >> /usr/bin/addmailinglist
  echo 'exit 0' >> /usr/bin/addmailinglist
  chmod +x /usr/bin/addmailinglist
  echo 'folders_for_mailing_lists' >> $COMPLETION_FILE
}

function folders_for_email_addresses {
  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" ]]; then
      return
  fi
  if grep -Fxq "folders_for_email_addresses" $COMPLETION_FILE; then
      return
  fi
  echo '#!/bin/bash' > /usr/bin/addemailtofolder
  echo 'MYUSERNAME=$1' >> /usr/bin/addemailtofolder
  echo 'EMAILADDRESS=$2' >> /usr/bin/addemailtofolder
  echo 'MAILINGLIST=$3' >> /usr/bin/addemailtofolder
  echo 'MUTTRC=/home/$MYUSERNAME/.muttrc' >> /usr/bin/addemailtofolder
  echo 'PM=/home/$MYUSERNAME/.procmailrc' >> /usr/bin/addemailtofolder
  echo 'LISTDIR=/home/$MYUSERNAME/Maildir/$MAILINGLIST' >> /usr/bin/addemailtofolder
  echo '' >> /usr/bin/addemailtofolder
  echo 'if ! [[ $MYUSERNAME && $EMAILADDRESS && $MAILINGLIST ]]; then' >> /usr/bin/addemailtofolder
  echo '  echo "addemailtofolder [user name] [email address] [mailing list name]"' >> /usr/bin/addemailtofolder
  echo '  exit 1' >> /usr/bin/addemailtofolder
  echo 'fi' >> /usr/bin/addemailtofolder
  echo '' >> /usr/bin/addemailtofolder
  echo 'if [ ! -d "$LISTDIR" ]; then' >> /usr/bin/addemailtofolder
  echo '  mkdir -m 700 $LISTDIR' >> /usr/bin/addemailtofolder
  echo '  mkdir -m 700 $LISTDIR/tmp' >> /usr/bin/addemailtofolder
  echo '  mkdir -m 700 $LISTDIR/new' >> /usr/bin/addemailtofolder
  echo '  mkdir -m 700 $LISTDIR/cur' >> /usr/bin/addemailtofolder
  echo 'fi' >> /usr/bin/addemailtofolder
  echo 'chown -R $MYUSERNAME:$MYUSERNAME $LISTDIR' >> /usr/bin/addemailtofolder
  echo 'echo "" >> $PM' >> /usr/bin/addemailtofolder
  echo 'echo ":0" >> $PM' >> /usr/bin/addemailtofolder
  echo 'echo "  * ^From: $EMAILADDRESS" >> $PM' >> /usr/bin/addemailtofolder
  echo 'echo "$LISTDIR/new" >> $PM' >> /usr/bin/addemailtofolder
  echo 'chown $MYUSERNAME:$MYUSERNAME $PM' >> /usr/bin/addemailtofolder
  echo 'if [ ! -f "$MUTTRC" ]; then' >> /usr/bin/addemailtofolder
  echo '  cp /etc/Muttrc $MUTTRC' >> /usr/bin/addemailtofolder
  echo '  chown $MYUSERNAME:$MYUSERNAME $MUTTRC' >> /usr/bin/addemailtofolder
  echo 'fi' >> /usr/bin/addemailtofolder
  echo 'PROCMAILLOG=/home/$MYUSERNAME/log' >> /usr/bin/addemailtofolder
  echo 'if [ ! -d $PROCMAILLOG ]; then' >> /usr/bin/addemailtofolder
  echo '  mkdir $PROCMAILLOG' >> /usr/bin/addemailtofolder
  echo '  chown -R $MYUSERNAME:$MYUSERNAME $PROCMAILLOG' >> /usr/bin/addemailtofolder
  echo 'fi' >> /usr/bin/addemailtofolder
  echo 'MUTT_MAILBOXES=$(grep "mailboxes =" $MUTTRC)' >> /usr/bin/addemailtofolder
  echo 'if [[ $MUTT_MAILBOXES != *$MAILINGLIST* ]]; then' >> /usr/bin/addemailtofolder
  echo '  if ! grep -q "=$MAILINGLIST" $MUTTRC; then' >> /usr/bin/addemailtofolder
  echo '    sed -i "s|$MUTT_MAILBOXES|$MUTT_MAILBOXES =$MAILINGLIST|g" $MUTTRC' >> /usr/bin/addemailtofolder
  echo '    chown $MYUSERNAME:$MYUSERNAME $MUTTRC' >> /usr/bin/addemailtofolder
  echo '  fi' >> /usr/bin/addemailtofolder
  echo 'fi' >> /usr/bin/addemailtofolder
  echo 'exit 0' >> /usr/bin/addemailtofolder
  chmod +x /usr/bin/addemailtofolder
  echo 'folders_for_email_addresses' >> $COMPLETION_FILE
}

function dynamic_dns_freedns {
  if grep -Fxq "dynamic_dns_freedns" $COMPLETION_FILE; then
      return
  fi

  echo '#!/bin/bash' > /usr/bin/dynamicdns
  echo '# subdomain name 1' >> /usr/bin/dynamicdns
  echo "wget -O - https://freedns.afraid.org/dynamic/update.php?$FREEDNS_SUBDOMAIN_CODE== >> /dev/null 2>&1" >> /usr/bin/dynamicdns
  echo '# add any other subdomains below' >> /usr/bin/dynamicdns
  chmod 600 /usr/bin/dynamicdns
  chmod +x /usr/bin/dynamicdns

  if ! grep -q "dynamicdns" /etc/crontab; then
    echo '*/5 * * * * root /usr/bin/timeout 240 /usr/bin/dynamicdns' >> /etc/crontab
  fi
  service cron restart
  echo 'dynamic_dns_freedns' >> $COMPLETION_FILE
}

function create_public_mailing_list {
  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" ]]; then
      return
  fi
  if grep -Fxq "create_public_mailing_list" $COMPLETION_FILE; then
      return
  fi
  if [ ! $PUBLIC_MAILING_LIST ]; then
      return
  fi
  # does the mailing list have a separate domain name?
  if [ ! $PUBLIC_MAILING_LIST_DOMAIN_NAME ]; then
      PUBLIC_MAILING_LIST_DOMAIN_NAME=$DOMAIN_NAME
  fi

  PUBLIC_MAILING_LIST_USER="mlmmj"

  apt-get -y --force-yes install mlmmj
  adduser --system $PUBLIC_MAILING_LIST_USER
  addgroup $PUBLIC_MAILING_LIST_USER
  adduser $PUBLIC_MAILING_LIST_USER $PUBLIC_MAILING_LIST_USER

  echo ''
  echo "Creating the $PUBLIC_MAILING_LIST mailing list"
  echo ''

  # create the list
  mlmmj-make-ml -a -L "$PUBLIC_MAILING_LIST" -c $PUBLIC_MAILING_LIST_USER

  echo 'SYSTEM_ALIASES_PIPE_TRANSPORT = address_pipe' > /etc/exim4/conf.d/main/000_localmacros
  echo "SYSTEM_ALIASES_USER = $PUBLIC_MAILING_LIST_USER" >> /etc/exim4/conf.d/main/000_localmacros
  echo "SYSTEM_ALIASES_GROUP = $PUBLIC_MAILING_LIST_USER" >> /etc/exim4/conf.d/main/000_localmacros

  # router
  echo 'mlmmj_router:' > /etc/exim4/conf.d/router/750_exim4-config_mlmmj
  echo '  debug_print = "R: mlmmj_router for $local_part@$domain"' >> /etc/exim4/conf.d/router/750_exim4-config_mlmmj
  echo '  driver = accept' >> /etc/exim4/conf.d/router/750_exim4-config_mlmmj
  echo '  domains = +mlmmj_domains' >> /etc/exim4/conf.d/router/750_exim4-config_mlmmj
  echo '  #require_files = MLMMJ_HOME/${lc::$local_part}' >> /etc/exim4/conf.d/router/750_exim4-config_mlmmj
  echo '  # Use this instead, if you dont want to give Exim rx rights to mlmmj spool.' >> /etc/exim4/conf.d/router/750_exim4-config_mlmmj
  echo '  # Exim will then spawn a new process running under the UID of "mlmmj".' >> /etc/exim4/conf.d/router/750_exim4-config_mlmmj
  echo '  require_files = mlmmj:MLMMJ_HOME/${lc::$local_part}' >> /etc/exim4/conf.d/router/750_exim4-config_mlmmj
  echo '  local_part_suffix = +*' >> /etc/exim4/conf.d/router/750_exim4-config_mlmmj
  echo '  local_part_suffix_optional' >> /etc/exim4/conf.d/router/750_exim4-config_mlmmj
  echo '  headers_remove = Delivered-To' >> /etc/exim4/conf.d/router/750_exim4-config_mlmmj
  echo '  headers_add = Delivered-To: $local_part$local_part_suffix@$domain' >> /etc/exim4/conf.d/router/750_exim4-config_mlmmj
  echo '  transport = mlmmj_transport' >> /etc/exim4/conf.d/router/750_exim4-config_mlmmj

  # transport
  echo 'mlmmj_transport:' > /etc/exim4/conf.d/transport/40_exim4-config_mlmmj
  echo '  debug_print = "T: mlmmj_transport for $local_part@$domain"' >> /etc/exim4/conf.d/transport/40_exim4-config_mlmmj
  echo '  driver = pipe' >> /etc/exim4/conf.d/transport/40_exim4-config_mlmmj
  echo '  return_path_add' >> /etc/exim4/conf.d/transport/40_exim4-config_mlmmj
  echo '  user = mlmmj' >> /etc/exim4/conf.d/transport/40_exim4-config_mlmmj
  echo '  group = mlmmj' >> /etc/exim4/conf.d/transport/40_exim4-config_mlmmj
  echo '  home_directory = MLMMJ_HOME' >> /etc/exim4/conf.d/transport/40_exim4-config_mlmmj
  echo '  current_directory = MLMMJ_HOME' >> /etc/exim4/conf.d/transport/40_exim4-config_mlmmj
  echo '  command = /usr/bin/mlmmj-receive -F -L MLMMJ_HOME/${lc:$local_part}' >> /etc/exim4/conf.d/transport/40_exim4-config_mlmmj

  if ! grep -q "MLMMJ_HOME=/var/spool/mlmmj" /etc/exim4/conf.d/main/01_exim4-config_listmacrosdefs; then
      sed -i '/MAIN CONFIGURATION SETTINGS/a\MLMMJ_HOME=/var/spool/mlmmj' /etc/exim4/conf.d/main/01_exim4-config_listmacrosdefs
  fi
  if ! grep -q "domainlist mlmmj_domains =" /etc/exim4/conf.d/main/01_exim4-config_listmacrosdefs; then
      sed -i "/MLMMJ_HOME/a\domainlist mlmmj_domains = $PUBLIC_MAILING_LIST_DOMAIN_NAME" /etc/exim4/conf.d/main/01_exim4-config_listmacrosdefs
  fi


  if ! grep -q "delay_warning_condition =" /etc/exim4/conf.d/main/01_exim4-config_listmacrosdefs; then
      sed -i '/domainlist mlmmj_domains =/a\delay_warning_condition = ${if match_domain{$domain}{+mlmmj_domains}{no}{yes}}' /etc/exim4/conf.d/main/01_exim4-config_listmacrosdefs
  fi
  if ! grep -q ": +mlmmj_domains" /etc/exim4/conf.d/main/01_exim4-config_listmacrosdefs; then
      sed -i 's/domainlist relay_to_domains = MAIN_RELAY_TO_DOMAINS/domainlist relay_to_domains = MAIN_RELAY_TO_DOMAINS : +mlmmj_domains/g' /etc/exim4/conf.d/main/01_exim4-config_listmacrosdefs
  fi

  if ! grep -q "! +mlmmj_domains" /etc/exim4/conf.d/router/200_exim4-config_primary; then
      sed -i 's/domains = ! +local_domains/domains = ! +mlmmj_domains : ! +local_domains/g' /etc/exim4/conf.d/router/200_exim4-config_primary
  fi
  newaliases
  update-exim4.conf.template -r
  update-exim4.conf
  service exim4 restart

  if ! grep -q "$PUBLIC_MAILING_LIST mailing list" /home/$MY_USERNAME/README; then
      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'Public mailing list' >> /home/$MY_USERNAME/README
      echo '===================' >> /home/$MY_USERNAME/README
      echo "To subscribe to the $PUBLIC_MAILING_LIST mailing list send a" >> /home/$MY_USERNAME/README
      echo "cleartext email to $PUBLIC_MAILING_LIST+subscribe@$DOMAIN_NAME" >> /home/$MY_USERNAME/README
  fi

  addmailinglist $MY_USERNAME "$PUBLIC_MAILING_LIST" "$PUBLIC_MAILING_LIST"

  echo 'create_public_mailing_list' >> $COMPLETION_FILE
}

function create_private_mailing_list {
  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" ]]; then
      return
  fi
  # This installation doesn't work, results in ruby errors
  # There is currently no schleuder package for Debian jessie
  if grep -Fxq "create_private_mailing_list" $COMPLETION_FILE; then
      return
  fi
  if [ ! $PRIVATE_MAILING_LIST ]; then
      return
  fi
  if [[ $PRIVATE_MAILING_LIST == $MY_USERNAME ]]; then
      echo 'The name of the private mailing list should not be the'
      echo 'same as your username'
      exit 10
  fi
  if [ ! $MY_GPG_PUBLIC_KEY ]; then
      echo 'To create a private mailing list you need to specify a file'
      echo 'containing your exported GPG key within MY_GPG_PUBLIC_KEY at'
      echo 'the top of the script'
      exit 11
  fi
  apt-get -y --force-yes install ruby ruby-dev ruby-gpgme libgpgme11-dev libmagic-dev
  gem install schleuder
  schleuder-fix-gem-dependencies
  schleuder-init-setup --gem
  # NOTE: this is version number sensitive and so might need changing
  ln -s /var/lib/gems/2.1.0/gems/schleuder-2.2.4 /var/lib/schleuder
  sed -i 's/#smtp_port: 25/smtp_port: 465/g' /etc/schleuder/schleuder.conf
  sed -i 's/#superadminaddr: root@localhost/superadminaddr: root@localhost' /etc/schleuder/schleuder.conf
  schleuder-newlist $PRIVATE_MAILING_LIST@$DOMAIN_NAME -realname "$PRIVATE_MAILING_LIST" -adminaddress $MY_EMAIL_ADDRESS -initmember $MY_EMAIL_ADDRESS -initmemberkey $MY_GPG_PUBLIC_KEY -nointeractive
  addemailtofolder $MY_USERNAME $PRIVATE_MAILING_LIST@$DOMAIN_NAME $PRIVATE_MAILING_LIST

  echo 'schleuder:' > /etc/exim4/conf.d/router/550_exim4-config_schleuder
  echo '  debug_print = "R: schleuder for $local_part@$domain"' >> /etc/exim4/conf.d/router/550_exim4-config_schleuder
  echo '  driver = accept' >> /etc/exim4/conf.d/router/550_exim4-config_schleuder
  echo '  local_part_suffix_optional' >> /etc/exim4/conf.d/router/550_exim4-config_schleuder
  echo '  local_part_suffix = +* : -bounce : -sendkey' >> /etc/exim4/conf.d/router/550_exim4-config_schleuder
  echo '  domains = +local_domains' >> /etc/exim4/conf.d/router/550_exim4-config_schleuder
  echo '  user = schleuder' >> /etc/exim4/conf.d/router/550_exim4-config_schleuder
  echo '  group = schleuder' >> /etc/exim4/conf.d/router/550_exim4-config_schleuder
  echo '  require_files = schleuder:+/var/lib/schleuder/$domain/${local_part}' >> /etc/exim4/conf.d/router/550_exim4-config_schleuder
  echo '  transport = schleuder_transport' >> /etc/exim4/conf.d/router/550_exim4-config_schleuder

  echo 'schleuder_transport:' > /etc/exim4/conf.d/transport/30_exim4-config_schleuder
  echo '  debug_print = "T: schleuder_transport for $local_part@$domain"' >> /etc/exim4/conf.d/transport/30_exim4-config_schleuder
  echo '  driver = pipe' >> /etc/exim4/conf.d/transport/30_exim4-config_schleuder
  echo '  home_directory = "/var/lib/schleuder/$domain/$local_part"' >> /etc/exim4/conf.d/transport/30_exim4-config_schleuder
  echo '  command = "/usr/bin/schleuder $local_part@$domain"' >> /etc/exim4/conf.d/transport/30_exim4-config_schleuder
  chown -R schleuder:schleuder /var/lib/schleuder
  update-exim4.conf.template -r
  update-exim4.conf
  service exim4 restart
  useradd -d /var/schleuderlists -s /bin/false schleuder
  adduser Debian-exim schleuder
  usermod -a -G mail schleuder
  #exim -d -bt $PRIVATE_MAILING_LIST@$DOMAIN_NAME
  echo 'create_private_mailing_list' >> $COMPLETION_FILE
}

function import_email {
  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" || $SYSTEM_TYPE == "$VARIANT_NONMAILBOX" ]]; then
      return
  fi
  EMAIL_COMPLETE_MSG='  *** Freedombone mailbox installation is complete ***'
  if grep -Fxq "import_email" $COMPLETION_FILE; then
      if [[ $SYSTEM_TYPE == "$VARIANT_MAILBOX" ]]; then
          create_backup_script
          create_restore_script
          backup_to_friends_servers
          intrusion_detection
          echo ''
          echo "$EMAIL_COMPLETE_MSG"
          if [ -d $USB_MOUNT ]; then
              umount $USB_MOUNT
              rm -rf $USB_MOUNT
              echo '            You can now remove the USB drive'
          fi
          exit 0
      fi
      return
  fi
  if [ $IMPORT_MAILDIR ]; then
      if [ -d $IMPORT_MAILDIR ]; then
          echo 'Transfering email files'
          cp -r $IMPORT_MAILDIR /home/$MY_USERNAME
          chown -R $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/Maildir
      else
          echo "Email import directory $IMPORT_MAILDIR not found"
          exit 9
      fi
  fi
  echo 'import_email' >> $COMPLETION_FILE
  if [[ $SYSTEM_TYPE == "$VARIANT_MAILBOX" ]]; then
      create_backup_script
      create_restore_script
      backup_to_friends_servers
      intrusion_detection
      # unmount any attached usb drive
      echo ''
      echo "$EMAIL_COMPLETE_MSG"
      echo ''
      if [ -d $USB_MOUNT ]; then
          umount $USB_MOUNT
          rm -rf $USB_MOUNT
          echo '            You can now remove the USB drive'
      fi
      exit 0
  fi
}

function install_web_server {
  if [[ $SYSTEM_TYPE == "$VARIANT_CHAT" ]]; then
      return
  fi
  if grep -Fxq "install_web_server" $COMPLETION_FILE; then
      return
  fi
  # remove apache
  apt-get -y remove --purge apache2
  if [ -d /etc/apache2 ]; then
    rm -rf /etc/apache2
  fi
  # install nginx
  apt-get -y --force-yes install nginx php5-fpm git

  # limit the number of php processes
  sed -i 's/; process.max = 128/process.max = 32/g' /etc/php5/fpm/php-fpm.conf
  sed -i 's/;process_control_timeout = 0/process_control_timeout = 300/g' /etc/php5/fpm/php-fpm.conf

  if ! grep -q "pm.max_children" /etc/php5/fpm/php-fpm.conf; then
      echo 'pm.max_children = 10' >> /etc/php5/fpm/php-fpm.conf
      echo 'pm.start_servers = 2' >> /etc/php5/fpm/php-fpm.conf
      echo 'pm.min_spare_servers = 2' >> /etc/php5/fpm/php-fpm.conf
      echo 'pm.max_spare_servers = 5' >> /etc/php5/fpm/php-fpm.conf
      echo 'pm.max_requests = 50' >> /etc/php5/fpm/php-fpm.conf
  fi

  if [ ! -d /etc/nginx ]; then
      echo "ERROR: nginx does not appear to have installed. $CHECK_MESSAGE"
      exit 51
  fi

  # install a script to easily enable and disable nginx virtual hosts
  if [ ! -d $INSTALL_DIR ]; then
      mkdir $INSTALL_DIR
  fi
  cd $INSTALL_DIR
  git clone https://github.com/perusio/nginx_ensite
  cd $INSTALL_DIR/nginx_ensite
  cp nginx_* /usr/sbin
  nginx_dissite default
  echo 'install_web_server' >> $COMPLETION_FILE
}

function configure_php {
  sed -i "s/memory_limit = 128M/memory_limit = ${MAX_PHP_MEMORY}M/g" /etc/php5/fpm/php.ini
  sed -i 's/;cgi.fix_pathinfo=1/cgi.fix_pathinfo=0/g' /etc/php5/fpm/php.ini
  sed -i "s/memory_limit = -1/memory_limit = ${MAX_PHP_MEMORY}M/g" /etc/php5/cli/php.ini
  sed -i "s/upload_max_filesize = 2M/upload_max_filesize = 50M/g" /etc/php5/fpm/php.ini
  sed -i "s/post_max_size = 8M/post_max_size = 50M/g" /etc/php5/fpm/php.ini
}

function get_mariadb_password {
  if [ -f /home/$MY_USERNAME/README ]; then
      if grep -q "MariaDB password" /home/$MY_USERNAME/README; then
          MARIADB_PASSWORD=$(cat /home/$MY_USERNAME/README | grep "MariaDB password" | awk -F ':' '{print $2}' | sed 's/^ *//')
      fi
  fi
}

function get_mariadb_gnusocial_admin_password {
  if [ -f /home/$MY_USERNAME/README ]; then
      if grep -q "MariaDB gnusocial admin password" /home/$MY_USERNAME/README; then
          MICROBLOG_ADMIN_PASSWORD=$(cat /home/$MY_USERNAME/README | grep "MariaDB gnusocial admin password" | awk -F ':' '{print $2}' | sed 's/^ *//')
      fi
  fi
}

function get_mariadb_redmatrix_admin_password {
  if [ -f /home/$MY_USERNAME/README ]; then
      if grep -q "MariaDB Red Matrix admin password" /home/$MY_USERNAME/README; then
          REDMATRIX_ADMIN_PASSWORD=$(cat /home/$MY_USERNAME/README | grep "MariaDB Red Matrix admin password" | awk -F ':' '{print $2}' | sed 's/^ *//')
      fi
  fi
}

function get_mariadb_owncloud_admin_password {
  if [ -f /home/$MY_USERNAME/README ]; then
      if grep -q "Owncloud database password" /home/$MY_USERNAME/README; then
          OWNCLOUD_ADMIN_PASSWORD=$(cat /home/$MY_USERNAME/README | grep "Owncloud database password" | awk -F ':' '{print $2}' | sed 's/^ *//')
      fi
  fi
}

function install_mariadb {
  if grep -Fxq "install_mariadb" $COMPLETION_FILE; then
      return
  fi
  apt-get -y --force-yes install python-software-properties debconf-utils
  apt-key adv --recv-keys --keyserver keyserver.ubuntu.com 0xcbcb082a1bb943db
  add-apt-repository 'deb http://mariadb.biz.net.id//repo/10.1/debian sid main'
  apt-get -y --force-yes install software-properties-common
  apt-get -y update

  get_mariadb_password
  if [ ! $MARIADB_PASSWORD ]; then
      MARIADB_PASSWORD=$(openssl rand -base64 32)
      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'MariaDB / MySql' >> /home/$MY_USERNAME/README
      echo '===============' >> /home/$MY_USERNAME/README
      echo "Your MariaDB password is: $MARIADB_PASSWORD" >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
  fi

  debconf-set-selections <<< "mariadb-server mariadb-server/root_password password $MARIADB_PASSWORD"
  debconf-set-selections <<< "mariadb-server mariadb-server/root_password_again password $MARIADB_PASSWORD"
  apt-get -y --force-yes install mariadb-server

  if [ ! -d /etc/mysql ]; then
      echo "ERROR: mariadb-server does not appear to have installed. $CHECK_MESSAGE"
      exit 54
  fi

  mysqladmin -u root password "$MARIADB_PASSWORD"
  echo 'install_mariadb' >> $COMPLETION_FILE
}

function backup_databases_script_header {
  if [ ! -f /usr/bin/backupdatabases ]; then
      # daily
      echo '#!/bin/sh' > /usr/bin/backupdatabases
      echo '' >> /usr/bin/backupdatabases
      echo "EMAIL='$MY_EMAIL_ADDRESS'" >> /usr/bin/backupdatabases
      echo '' >> /usr/bin/backupdatabases
      echo "MYSQL_PASSWORD='$MARIADB_PASSWORD'" >> /usr/bin/backupdatabases
      echo 'umask 0077' >> /usr/bin/backupdatabases
      echo '' >> /usr/bin/backupdatabases
      echo '# exit if we are backing up to friends servers' >> /usr/bin/backupdatabases
      echo "if [ -f $FRIENDS_SERVER_LIST ]; then" >> /usr/bin/backupdatabases
      echo '  exit 1' >> /usr/bin/backupdatabases
      echo 'fi' >> /usr/bin/backupdatabases
      chmod 600 /usr/bin/backupdatabases
      chmod +x /usr/bin/backupdatabases

      echo '#!/bin/sh' > /etc/cron.daily/backupdatabasesdaily
      echo '/usr/bin/backupdatabases' >> /etc/cron.daily/backupdatabasesdaily
      chmod 600 /etc/cron.daily/backupdatabasesdaily
      chmod +x /etc/cron.daily/backupdatabasesdaily

      # weekly
      echo '#!/bin/sh' > /etc/cron.weekly/backupdatabasesweekly
      echo '' >> /etc/cron.weekly/backupdatabasesweekly
      echo 'umask 0077' >> /etc/cron.weekly/backupdatabasesweekly

      chmod 600 /etc/cron.weekly/backupdatabasesweekly
      chmod +x /etc/cron.weekly/backupdatabasesweekly

      # monthly
      echo '#!/bin/sh' > /etc/cron.monthly/backupdatabasesmonthly
      echo '' >> /etc/cron.monthly/backupdatabasesmonthly
      echo 'umask 0077' >> /etc/cron.monthly/backupdatabasesmonthly

      chmod 600 /etc/cron.monthly/backupdatabasesmonthly
      chmod +x /etc/cron.monthly/backupdatabasesmonthly
  fi
}

function repair_databases_script {
  if grep -Fxq "repair_databases_script" $COMPLETION_FILE; then
      return
  fi
  echo '#!/bin/bash' > /usr/bin/repairdatabase
  echo '' >> /usr/bin/repairdatabase
  echo 'DATABASE=$1' >> /usr/bin/repairdatabase
  echo "EMAIL=$MY_EMAIL_ADDRESS" >> /usr/bin/repairdatabase
  echo '' >> /usr/bin/repairdatabase
  echo "MYSQL_ROOT_PASSWORD='$MARIADB_PASSWORD'" >> /usr/bin/repairdatabase
  echo 'TEMPFILE=/root/repairdatabase_$DATABASE' >> /usr/bin/repairdatabase
  echo '' >> /usr/bin/repairdatabase
  echo 'umask 0077' >> /usr/bin/repairdatabase
  echo '' >> /usr/bin/repairdatabase
  echo '# check the database' >> /usr/bin/repairdatabase
  echo 'mysqlcheck -c -u root --password=$MYSQL_ROOT_PASSWORD $DATABASE > $TEMPFILE' >> /usr/bin/repairdatabase
  echo '' >> /usr/bin/repairdatabase
  echo '# Attempt to repair the database if it contains errors' >> /usr/bin/repairdatabase
  echo 'if grep -q "Error" "$TEMPFILE"; then' >> /usr/bin/repairdatabase
  echo '    mysqlcheck -u root --password=$MYSQL_ROOT_PASSWORD --auto-repair $DATABASE' >> /usr/bin/repairdatabase
  echo 'else' >> /usr/bin/repairdatabase
  echo '    # No errors were found, so exit' >> /usr/bin/repairdatabase
  echo '    rm -f $TEMPFILE' >> /usr/bin/repairdatabase
  echo '    exit 0' >> /usr/bin/repairdatabase
  echo 'fi' >> /usr/bin/repairdatabase
  echo 'rm -f $TEMPFILE' >> /usr/bin/repairdatabase
  echo '' >> /usr/bin/repairdatabase
  echo '# Check the database again' >> /usr/bin/repairdatabase
  echo 'mysqlcheck -c -u root --password=$MYSQL_ROOT_PASSWORD $DATABASE > $TEMPFILE' >> /usr/bin/repairdatabase
  echo '' >> /usr/bin/repairdatabase
  echo '# If it still contains errors then restore from backup' >> /usr/bin/repairdatabase
  echo 'if grep -q "Error" "$TEMPFILE"; then' >> /usr/bin/repairdatabase
  echo '    mysql -u root --password=$MYSQL_ROOT_PASSWORD $DATABASE -o < /var/backups/${DATABASE}_daily.sql' >> /usr/bin/repairdatabase
  echo '' >> /usr/bin/repairdatabase
  echo '    # Send a warning email' >> /usr/bin/repairdatabase
  echo '    echo "$DATABASE database corruption could not be repaired. Restored from backup." | mail -s "Freedombone database maintenance" $EMAIL' >> /usr/bin/repairdatabase
  echo '    rm -f $TEMPFILE' >> /usr/bin/repairdatabase
  echo '' >> /usr/bin/repairdatabase
  echo '    exit 1' >> /usr/bin/repairdatabase
  echo 'fi' >> /usr/bin/repairdatabase
  echo 'rm -f $TEMPFILE' >> /usr/bin/repairdatabase
  echo '' >> /usr/bin/repairdatabase
  echo 'exit 0' >> /usr/bin/repairdatabase
  chmod 600 /usr/bin/repairdatabase
  chmod +x /usr/bin/repairdatabase

  echo '#!/bin/bash' > /etc/cron.hourly/repair
  echo '' >> /etc/cron.hourly/repair
  chmod 600 /etc/cron.hourly/repair
  chmod +x /etc/cron.hourly/repair

  echo 'repair_databases_script' >> $COMPLETION_FILE
}

function install_owncloud {
  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_MAILBOX" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" ]]; then
      return
  fi
  OWNCLOUD_COMPLETION_MSG1=" *** Freedombone $SYSTEM_TYPE is now installed ***"
  OWNCLOUD_COMPLETION_MSG2="Open $OWNCLOUD_DOMAIN_NAME in a web browser to complete the setup"
  if grep -Fxq "install_owncloud" $COMPLETION_FILE; then
      if [[ $SYSTEM_TYPE == "$VARIANT_CLOUD" ]]; then
          create_backup_script
          create_restore_script
          backup_to_friends_servers
          intrusion_detection
          # unmount any attached usb drive
          if [ -d $USB_MOUNT ]; then
              umount $USB_MOUNT
              rm -rf $USB_MOUNT
          fi
          echo ''
          echo "$OWNCLOUD_COMPLETION_MSG1"
          echo "$OWNCLOUD_COMPLETION_MSG2"
          exit 0
      fi
      return
  fi
  # if this is exclusively a cloud setup
  if [[ $SYSTEM_TYPE == "$VARIANT_CLOUD" ]]; then
      OWNCLOUD_DOMAIN_NAME=$DOMAIN_NAME
      OWNCLOUD_FREEDNS_SUBDOMAIN_CODE=$FREEDNS_SUBDOMAIN_CODE
  fi
  if [ ! $OWNCLOUD_DOMAIN_NAME ]; then
      return
  fi
  if ! [[ $SYSTEM_TYPE == "$VARIANT_CLOUD" ]]; then
      if [ ! $SYSTEM_TYPE ]; then
          return
      fi
  fi
  apt-get -y --force-yes install owncloud
  install_mariadb
  get_mariadb_password

  get_mariadb_owncloud_admin_password
  if [ ! $OWNCLOUD_ADMIN_PASSWORD ]; then
      OWNCLOUD_ADMIN_PASSWORD=$(openssl rand -base64 32)
  fi

  if ! grep -q "Owncloud database user" /home/$MY_USERNAME/README; then
      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'Owncloud' >> /home/$MY_USERNAME/README
      echo '========' >> /home/$MY_USERNAME/README
      echo 'Owncloud database user: owncloudadmin' >> /home/$MY_USERNAME/README
      echo "Owncloud database password: $OWNCLOUD_ADMIN_PASSWORD" >> /home/$MY_USERNAME/README
      echo 'Owncloud database name: owncloud' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'After creating an administrator account then create a user account via' >> /home/$MY_USERNAME/README
      echo "the Users dropdown menu entry. The username should be '$MY_USERNAME'." >> /home/$MY_USERNAME/README
  fi

  echo "create database owncloud;
CREATE USER 'owncloudadmin'@'localhost' IDENTIFIED BY '$OWNCLOUD_ADMIN_PASSWORD';
GRANT ALL PRIVILEGES ON owncloud.* TO 'owncloudadmin'@'localhost';
quit" > $INSTALL_DIR/batch.sql
  chmod 600 $INSTALL_DIR/batch.sql
  mysql -u root --password="$MARIADB_PASSWORD" < $INSTALL_DIR/batch.sql
  shred -zu $INSTALL_DIR/batch.sql

  if [ ! -d /var/www/$OWNCLOUD_DOMAIN_NAME ]; then
      mkdir /var/www/$OWNCLOUD_DOMAIN_NAME
  fi
  if [ -d /var/www/$OWNCLOUD_DOMAIN_NAME/htdocs ]; then
      rm -rf /var/www/$OWNCLOUD_DOMAIN_NAME/htdocs
  fi

  ln -s /usr/share/owncloud /var/www/$OWNCLOUD_DOMAIN_NAME/htdocs

  echo 'server {' > /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    listen 80;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo "    server_name $OWNCLOUD_DOMAIN_NAME;" >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    rewrite ^ https://$server_name$request_uri? permanent;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '}' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo 'server {' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    listen 443 ssl;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo "    root /var/www/$OWNCLOUD_DOMAIN_NAME/htdocs;" >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo "    server_name $OWNCLOUD_DOMAIN_NAME;" >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    ssl on;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo "    ssl_certificate /etc/ssl/certs/$OWNCLOUD_DOMAIN_NAME.crt;" >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo "    ssl_certificate_key /etc/ssl/private/$OWNCLOUD_DOMAIN_NAME.key;" >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo "    ssl_dhparam /etc/ssl/certs/$OWNCLOUD_DOMAIN_NAME.dhparam;" >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    ssl_session_timeout 5m;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    ssl_prefer_server_ciphers on;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo "    ssl_protocols $SSL_PROTOCOLS; # not possible to do exclusive" >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo "    ssl_ciphers '$SSL_CIPHERS';" >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    add_header X-Frame-Options DENY;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    add_header X-Content-Type-Options nosniff;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    add_header Strict-Transport-Security max-age=15768000;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    # if you want to be able to access the site via HTTP' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    # then replace the above with the following:' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    # add_header Strict-Transport-Security "max-age=0;";' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo "    # make sure webfinger and other well known services aren't blocked" >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    # by denying dot files and rewrite request to the front controller' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    location ^~ /.well-known/ {' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        allow all;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        rewrite ^/(.*) /index.php?q=$uri&$args last;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    client_max_body_size 10G; # set max upload size' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    client_body_buffer_size 128k;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    fastcgi_buffers 64 4K;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    rewrite ^/caldav(.*)$ /remote.php/caldav$1 redirect;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    rewrite ^/carddav(.*)$ /remote.php/carddav$1 redirect;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    rewrite ^/webdav(.*)$ /remote.php/webdav$1 redirect;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    index index.php;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    error_page 403 /core/templates/403.php;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    error_page 404 /core/templates/404.php;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    location = /robots.txt {' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        allow all;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        log_not_found off;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        access_log off;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    location ~ ^/(data|config|\.ht|db_structure\.xml|README) {' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        deny all;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    location / {' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        # The following 2 rules are only needed with webfinger' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        rewrite ^/.well-known/host-meta /public.php?service=host-meta last;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        rewrite ^/.well-known/host-meta.json /public.php?service=host-meta-json last;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        rewrite ^/.well-known/carddav /remote.php/carddav/ redirect;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        rewrite ^/.well-known/caldav /remote.php/caldav/ redirect;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        rewrite ^(/core/doc/[^\/]+/)$ $1/index.html;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        try_files $uri $uri/ index.php;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    location ~ ^(.+?\.php)(/.*)?$ {' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        try_files $1 =404;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        fastcgi_split_path_info ^(.+\.php)(/.+)$;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        fastcgi_pass unix:/var/run/php5-fpm.sock;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        fastcgi_index index.php;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        include fastcgi_params;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        fastcgi_param SCRIPT_FILENAME $document_root$1;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        fastcgi_param PATH_INFO $2;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        fastcgi_param HTTPS on;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    # Optional: set long EXPIRES header on static assets' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    location ~* ^.+\.(jpg|jpeg|gif|bmp|ico|png|css|js|swf)$ {' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        expires 30d;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo "        # Optional: Don't log access to assets" >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '        access_log off;' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME
  echo '}' >> /etc/nginx/sites-available/$OWNCLOUD_DOMAIN_NAME

  configure_php

  if [ ! -f /etc/ssl/private/$OWNCLOUD_DOMAIN_NAME.key ]; then
      makecert $OWNCLOUD_DOMAIN_NAME
  fi

  # Ensure that the database gets backed up locally, if remote
  # backups are not being used
  backup_databases_script_header
  echo '' >> /usr/bin/backupdatabases
  echo '# Backup Owncloud database' >> /usr/bin/backupdatabases
  echo 'TEMPFILE=/root/owncloud.sql' >> /usr/bin/backupdatabases
  echo 'DAILYFILE=/var/backups/owncloud_daily.sql' >> /usr/bin/backupdatabases
  echo 'mysqldump --password="$MYSQL_PASSWORD" owncloud > $TEMPFILE' >> /usr/bin/backupdatabases
  echo 'FILESIZE=$(stat -c%s $TEMPFILE)' >> /usr/bin/backupdatabases
  echo 'if [ "$FILESIZE" -eq "0" ]; then' >> /usr/bin/backupdatabases
  echo '    if [ -f $DAILYFILE ]; then' >> /usr/bin/backupdatabases
  echo '        cp $DAILYFILE $TEMPFILE' >> /usr/bin/backupdatabases
  echo '' >> /usr/bin/backupdatabases
  echo '        # try to restore yesterdays database' >> /usr/bin/backupdatabases
  echo '        mysql -u root --password="$MYSQL_PASSWORD" owncloud -o < $DAILYFILE' >> /usr/bin/backupdatabases
  echo '' >> /usr/bin/backupdatabases
  echo '        # Send a warning email' >> /usr/bin/backupdatabases
  echo '        echo "Unable to create a backup of the Owncloud database. Attempted to restore from yesterdays backup" | mail -s "Owncloud backup" $EMAIL' >> /usr/bin/backupdatabases
  echo '    else' >> /usr/bin/backupdatabases
  echo '        # Send a warning email' >> /usr/bin/backupdatabases
  echo '        echo "Unable to create a backup of the Owncloud database." | mail -s "Owncloud backup" $EMAIL' >> /usr/bin/backupdatabases
  echo '    fi' >> /usr/bin/backupdatabases
  echo 'else' >> /usr/bin/backupdatabases
  echo '    chmod 600 $TEMPFILE' >> /usr/bin/backupdatabases
  echo '    mv $TEMPFILE $DAILYFILE' >> /usr/bin/backupdatabases
  echo '' >> /usr/bin/backupdatabases
  echo '    # Make the backup readable only by root' >> /usr/bin/backupdatabases
  echo '    chmod 600 $DAILYFILE' >> /usr/bin/backupdatabases
  echo 'fi' >> /usr/bin/backupdatabases

  nginx_ensite $OWNCLOUD_DOMAIN_NAME
  service php5-fpm restart
  service nginx restart

  # update the dynamic DNS
  if [ $OWNCLOUD_FREEDNS_SUBDOMAIN_CODE ]; then
      if [[ $OWNCLOUD_FREEDNS_SUBDOMAIN_CODE != $FREEDNS_SUBDOMAIN_CODE ]]; then
          if ! grep -q "$OWNCLOUD_DOMAIN_NAME" /usr/bin/dynamicdns; then
              echo "# $OWNCLOUD_DOMAIN_NAME" >> /usr/bin/dynamicdns
              echo "wget -O - https://freedns.afraid.org/dynamic/update.php?$OWNCLOUD_FREEDNS_SUBDOMAIN_CODE== >> /dev/null 2>&1" >> /usr/bin/dynamicdns
          fi
      fi
  else
      echo 'WARNING: No freeDNS subdomain code given for Owncloud. It is assumed that you are using some other dynamic DNS provider.'
  fi

  echo 'install_owncloud' >> $COMPLETION_FILE

  if [[ $SYSTEM_TYPE == "$VARIANT_CLOUD" ]]; then
      create_backup_script
      create_restore_script
      backup_to_friends_servers
      intrusion_detection
      # unmount any attached usb drive
      if [ -d $USB_MOUNT ]; then
          umount $USB_MOUNT
          rm -rf $USB_MOUNT
      fi
      echo ''
      echo "$OWNCLOUD_COMPLETION_MSG1"
      echo "$OWNCLOUD_COMPLETION_MSG2"
      exit 0
  fi
}

function install_xmpp {
  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_MAILBOX" || $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" ]]; then
      return
  fi
  if grep -Fxq "install_xmpp" $COMPLETION_FILE; then
      return
  fi
  apt-get -y --force-yes install prosody

  if [ ! -d /etc/prosody ]; then
      echo "ERROR: prosody does not appear to have installed. $CHECK_MESSAGE"
      exit 52
  fi

  if [ ! -f "/etc/ssl/private/xmpp.key" ]; then
      makecert xmpp
  fi
  chown prosody:prosody /etc/ssl/private/xmpp.key
  chown prosody:prosody /etc/ssl/certs/xmpp.*
  cp -a /etc/prosody/conf.avail/example.com.cfg.lua /etc/prosody/conf.avail/xmpp.cfg.lua

  sed -i 's|/etc/prosody/certs/example.com.key|/etc/ssl/private/xmpp.key|g' /etc/prosody/conf.avail/xmpp.cfg.lua
  sed -i 's|/etc/prosody/certs/example.com.crt|/etc/ssl/certs/xmpp.crt|g' /etc/prosody/conf.avail/xmpp.cfg.lua
  if ! grep -q "xmpp.dhparam" /etc/prosody/conf.avail/xmpp.cfg.lua; then
      sed -i '/certificate =/a\              dhparam = "/etc/ssl/certs/xmpp.dhparam";' /etc/prosody/conf.avail/xmpp.cfg.lua
  fi
  sed -i "s/example.com/$DOMAIN_NAME/g" /etc/prosody/conf.avail/xmpp.cfg.lua
  sed -i 's/enabled = false -- Remove this line to enable this host//g' /etc/prosody/conf.avail/xmpp.cfg.lua

  if ! grep -q "modules_enabled" /etc/prosody/conf.avail/xmpp.cfg.lua; then
      echo '' >> /etc/prosody/conf.avail/xmpp.cfg.lua
      echo 'modules_enabled = {' >> /etc/prosody/conf.avail/xmpp.cfg.lua
      echo '  "bosh"; -- Enable mod_bosh' >> /etc/prosody/conf.avail/xmpp.cfg.lua
      echo '  "tls"; -- Enable mod_tls' >> /etc/prosody/conf.avail/xmpp.cfg.lua
      echo '  "saslauth"; -- Enable mod_saslauth' >> /etc/prosody/conf.avail/xmpp.cfg.lua
      echo '}' >> /etc/prosody/conf.avail/xmpp.cfg.lua
      echo '' >> /etc/prosody/conf.avail/xmpp.cfg.lua
      echo 'c2s_require_encryption = true' >> /etc/prosody/conf.avail/xmpp.cfg.lua
      echo 's2s_require_encryption = true' >> /etc/prosody/conf.avail/xmpp.cfg.lua
      echo 'allow_unencrypted_plain_auth = false' >> /etc/prosody/conf.avail/xmpp.cfg.lua
  fi
  ln -sf /etc/prosody/conf.avail/xmpp.cfg.lua /etc/prosody/conf.d/xmpp.cfg.lua

  sed -i 's|/etc/prosody/certs/localhost.key|/etc/ssl/private/xmpp.key|g' /etc/prosody/prosody.cfg.lua
  sed -i 's|/etc/prosody/certs/localhost.crt|/etc/ssl/certs/xmpp.crt|g' /etc/prosody/prosody.cfg.lua
  if ! grep -q "xmpp.dhparam" /etc/prosody/prosody.cfg.lua; then
      sed -i '/certificate =/a\      dhparam = "/etc/ssl/certs/xmpp.dhparam";' /etc/prosody/prosody.cfg.lua
  fi
  sed -i 's/c2s_require_encryption = false/c2s_require_encryption = true/g' /etc/prosody/prosody.cfg.lua
  if ! grep -q "s2s_require_encryption" /etc/prosody/prosody.cfg.lua; then
      sed -i '/c2s_require_encryption/a\s2s_require_encryption = true' /etc/prosody/prosody.cfg.lua
  fi
  if ! grep -q "allow_unencrypted_plain_auth" /etc/prosody/prosody.cfg.lua; then
      echo 'allow_unencrypted_plain_auth = false' >> /etc/prosody/conf.avail/xmpp.cfg.lua
  fi
  sed -i 's/--"bosh";/"bosh";/g' /etc/prosody/prosody.cfg.lua
  sed -i 's/authentication = "internal_plain"/authentication = "internal_hashed"/g' /etc/prosody/prosody.cfg.lua
  sed -i 's/enabled = false -- Remove this line to enable this host//g' /etc/prosody/prosody.cfg.lua
  sed -i 's/example.com/$DOMAIN_NAME/g' /etc/prosody/prosody.cfg.lua

  service prosody restart
  touch /home/$MY_USERNAME/README

  if ! grep -q "Your XMPP password is" /home/$MY_USERNAME/README; then
      XMPP_PASSWORD=$(openssl rand -base64 8)
      prosodyctl register $MY_USERNAME $DOMAIN_NAME $XMPP_PASSWORD
      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'XMPP' >> /home/$MY_USERNAME/README
      echo '====' >> /home/$MY_USERNAME/README
      echo "Your XMPP password is: $XMPP_PASSWORD" >> /home/$MY_USERNAME/README
      echo 'You can change it with: ' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo "    prosodyctl passwd $MY_EMAIL_ADDRESS" >> /home/$MY_USERNAME/README
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
  fi
  echo 'install_xmpp' >> $COMPLETION_FILE
}

function install_irc_server {
  if [[ $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_MAILBOX" || $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" ]]; then
      return
  fi
  if grep -Fxq "install_irc_server" $COMPLETION_FILE; then
      return
  fi
  apt-get -y --force-yes install ngircd

  if [ ! -d /etc/ngircd ]; then
      echo "ERROR: ngircd does not appear to have installed. $CHECK_MESSAGE"
      exit 53
  fi

  if [ ! -f /etc/ssl/private/ngircd.key ]; then
      makecert ngircd
  fi

  echo '**************************************************' > /etc/ngircd/motd
  echo '*           F R E E D O M B O N E   I R C        *' >> /etc/ngircd/motd
  echo '*                                                *' >> /etc/ngircd/motd
  echo '*               Freedom in the Cloud             *' >> /etc/ngircd/motd
  echo '**************************************************' >> /etc/ngircd/motd
  sed -i 's|MotdFile = /etc/ngircd/ngircd.motd|MotdFile = /etc/ngircd/motd|g' /etc/ngircd/ngircd.conf
  sed -i "s/irc@irc.example.com/$MY_EMAIL_ADDRESS/g" /etc/ngircd/ngircd.conf
  sed -i "s/irc.example.net/$DOMAIN_NAME/g" /etc/ngircd/ngircd.conf
  sed -i "s|Yet another IRC Server running on Debian GNU/Linux|IRC Server of $DOMAIN_NAME|g" /etc/ngircd/ngircd.conf
  sed -i 's/;Password = wealllikedebian/Password =/g' /etc/ngircd/ngircd.conf
  sed -i 's|;CertFile = /etc/ssl/certs/server.crt|CertFile = /etc/ssl/certs/ngircd.crt|g' /etc/ngircd/ngircd.conf
  sed -i 's|;DHFile = /etc/ngircd/dhparams.pem|DHFile = /etc/ssl/certs/ngircd.dhparam|g' /etc/ngircd/ngircd.conf
  sed -i 's|;KeyFile = /etc/ssl/private/server.key|KeyFile = /etc/ssl/private/ngircd.key|g' /etc/ngircd/ngircd.conf
  sed -i 's/;Ports = 6697, 9999/Ports = 6697, 9999/g' /etc/ngircd/ngircd.conf
  sed -i 's/;Name = #ngircd/Name = #freedombone/g' /etc/ngircd/ngircd.conf
  sed -i 's/;Topic = Our ngircd testing channel/Topic = Freedombone chat channel/g' /etc/ngircd/ngircd.conf
  sed -i 's/;MaxUsers = 23/MaxUsers = 23/g' /etc/ngircd/ngircd.conf
  sed -i 's|;KeyFile = /etc/ngircd/#chan.key|KeyFile = /etc/ngircd/#freedombone.key|g' /etc/ngircd/ngircd.conf
  sed -i 's/;CloakHost = cloaked.host/CloakHost = freedombone/g' /etc/ngircd/ngircd.conf
  IRC_SALT=$(openssl rand -base64 32)
  IRC_OPERATOR_PASSWORD=$(openssl rand -base64 8)
  sed -i "s|;CloakHostSalt = abcdefghijklmnopqrstuvwxyz|CloakHostSalt = $IRC_SALT|g" /etc/ngircd/ngircd.conf
  sed -i 's/;ConnectIPv4 = yes/ConnectIPv4 = yes/g' /etc/ngircd/ngircd.conf
  sed -i 's/;MorePrivacy = no/MorePrivacy = yes/g' /etc/ngircd/ngircd.conf
  sed -i 's/;RequireAuthPing = no/RequireAuthPing = no/g' /etc/ngircd/ngircd.conf
  sed -i "s/;Name = TheOper/Name = $MY_USERNAME/g" /etc/ngircd/ngircd.conf
  sed -i "s/;Password = ThePwd/Password = $IRC_OPERATOR_PASSWORD/g" /etc/ngircd/ngircd.conf
  service ngircd restart

  if ! grep -q "IRC Server" /home/$MY_USERNAME/README; then
      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'IRC Server' >> /home/$MY_USERNAME/README
      echo '==========' >> /home/$MY_USERNAME/README
      echo 'To connect to your IRC server in irssi:' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo "  /server add -auto -ssl $DOMAIN_NAME 6697" >> /home/$MY_USERNAME/README
      echo "  /connect $DOMAIN_NAME" >> /home/$MY_USERNAME/README
      echo '  /join #freedombone' >> /home/$MY_USERNAME/README
  fi

  echo 'install_irc_server' >> $COMPLETION_FILE
}

function install_wiki {
  if [[ $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_MAILBOX" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" ]]; then
      return
  fi
  if grep -Fxq "install_wiki" $COMPLETION_FILE; then
      return
  fi
  # if everything is being installed or if this is exclusively a writer setup
  if [[ ! $SYSTEM_TYPE || $SYSTEM_TYPE == "$VARIANT_WRITER" ]]; then
      WIKI_DOMAIN_NAME=$DOMAIN_NAME
      WIKI_FREEDNS_SUBDOMAIN_CODE=$FREEDNS_SUBDOMAIN_CODE
  fi
  if [ ! $WIKI_DOMAIN_NAME ]; then
      return
  fi
  apt-get -y --force-yes install dokuwiki

  if [ ! -d /var/www/$WIKI_DOMAIN_NAME ]; then
      mkdir /var/www/$WIKI_DOMAIN_NAME
  fi
  if [ -d /var/www/$WIKI_DOMAIN_NAME/htdocs ]; then
      rm -rf /var/www/$WIKI_DOMAIN_NAME/htdocs
  fi
  if [ ! -f /etc/ssl/private/$WIKI_DOMAIN_NAME.key ]; then
      makecert $WIKI_DOMAIN_NAME
  fi

  ln -s /usr/share/dokuwiki /var/www/$WIKI_DOMAIN_NAME/htdocs

  if ! grep -q "video/ogg" /var/www/$WIKI_DOMAIN_NAME/htdocs/conf/mime.conf; then
      echo 'ogv     video/ogg' >> /var/www/$WIKI_DOMAIN_NAME/htdocs/conf/mime.conf
      echo 'mp4     video/mp4' >> /var/www/$WIKI_DOMAIN_NAME/htdocs/conf/mime.conf
      echo 'webm    video/webm' >> /var/www/$WIKI_DOMAIN_NAME/htdocs/conf/mime.conf
  fi

  echo 'server {' > /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    listen 80;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "    root /var/www/$WIKI_DOMAIN_NAME/htdocs;" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "    server_name $WIKI_DOMAIN_NAME;" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "    error_log /var/www/$WIKI_DOMAIN_NAME/error.log;" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    index index.php;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    charset utf-8;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    client_max_body_size 20m;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    client_body_buffer_size 128k;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # rewrite to front controller as default rule' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location / {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        rewrite ^/(.*) /index.php?q=$uri&$args last;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "    # make sure webfinger and other well known services aren't blocked" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # by denying dot files and rewrite request to the front controller' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ^~ /.well-known/ {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        allow all;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        rewrite ^/(.*) /index.php?q=$uri&$args last;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # statically serve these file types when possible' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # otherwise fall back to front controller' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # allow browser to cache them' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # added .htm for advanced source code editor library' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ~* \.(jpg|jpeg|gif|png|ico|css|js|htm|html|ttf|woff|svg)$ {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        expires 30d;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        try_files $uri /index.php?q=$uri&$args;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # block these file types' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ~* \.(tpl|md|tgz|log|out)$ {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        deny all;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # or a unix socket' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ~* \.php$ {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        # Zero-day exploit defense.' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        # http://forum.nginx.org/read.php?2,88845,page=3' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "        # Won't work properly (404 error) if the file is not stored on this" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "        # server, which is entirely possible with php-fpm/php-fcgi." >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "        # Comment the 'try_files' line out if you set up php-fpm/php-fcgi on" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "        # another machine. And then cross your fingers that you won't get hacked." >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        try_files $uri $uri/ /index.php;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        # NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        fastcgi_split_path_info ^(.+\.php)(/.+)$;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        # With php5-cgi alone:' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        # fastcgi_pass 127.0.0.1:9000;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        # With php5-fpm:' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        fastcgi_pass unix:/var/run/php5-fpm.sock;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        include fastcgi_params;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        fastcgi_index index.php;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # deny access to all dot files' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ~ /\. {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        deny all;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    #deny access to store' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ~ /store {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        deny all;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ~ /(data|conf|bin|inc)/ {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '      deny all;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ~ /\.ht {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '      deny  all;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '}' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo 'server {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    listen 443 ssl;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "    root /var/www/$WIKI_DOMAIN_NAME/htdocs;" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "    server_name $WIKI_DOMAIN_NAME;" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "    error_log /var/www/$WIKI_DOMAIN_NAME/error_ssl.log;" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    index index.php;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    charset utf-8;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    client_max_body_size 20m;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    client_body_buffer_size 128k;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    ssl on;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "    ssl_certificate /etc/ssl/certs/$WIKI_DOMAIN_NAME.crt;" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "    ssl_certificate_key /etc/ssl/private/$WIKI_DOMAIN_NAME.key;" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "    ssl_dhparam /etc/ssl/certs/$WIKI_DOMAIN_NAME.dhparam;" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    ssl_session_timeout 5m;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    ssl_prefer_server_ciphers on;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    ssl_session_cache  builtin:1000  shared:SSL:10m;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "    ssl_protocols $SSL_PROTOCOLS; # not possible to do exclusive" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "    ssl_ciphers '$SSL_CIPHERS';" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    add_header X-Frame-Options DENY;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    add_header X-Content-Type-Options nosniff;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    add_header Strict-Transport-Security "max-age=0;";' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # rewrite to front controller as default rule' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location / {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        rewrite ^/(.*) /index.php?q=$uri&$args last;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "    # make sure webfinger and other well known services aren't blocked" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # by denying dot files and rewrite request to the front controller' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ^~ /.well-known/ {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        allow all;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        rewrite ^/(.*) /index.php?q=$uri&$args last;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # statically serve these file types when possible' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # otherwise fall back to front controller' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # allow browser to cache them' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # added .htm for advanced source code editor library' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ~* \.(jpg|jpeg|gif|png|ico|css|js|htm|html|ttf|woff|svg)$ {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        expires 30d;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        try_files $uri /index.php?q=$uri&$args;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # block these file types' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ~* \.(tpl|md|tgz|log|out)$ {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        deny all;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # or a unix socket' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ~* \.php$ {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        # Zero-day exploit defense.' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        # http://forum.nginx.org/read.php?2,88845,page=3' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "        # Won't work properly (404 error) if the file is not stored on this" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "        # server, which is entirely possible with php-fpm/php-fcgi." >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "        # Comment the 'try_files' line out if you set up php-fpm/php-fcgi on" >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo "        # another machine. And then cross your fingers that you won't get hacked." >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        try_files $uri $uri/ /index.php;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        # NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        fastcgi_split_path_info ^(.+\.php)(/.+)$;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        # With php5-cgi alone:' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        # fastcgi_pass 127.0.0.1:9000;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        # With php5-fpm:' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        fastcgi_pass unix:/var/run/php5-fpm.sock;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        include fastcgi_params;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        fastcgi_index index.php;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    # deny access to all dot files' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ~ /\. {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        deny all;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    #deny access to store' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ~ /store {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '        deny all;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ~ /(data|conf|bin|inc)/ {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '      deny all;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    location ~ /\.ht {' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '      deny  all;' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME
  echo '}' >> /etc/nginx/sites-available/$WIKI_DOMAIN_NAME

  configure_php

  nginx_ensite $WIKI_DOMAIN_NAME
  service php5-fpm restart
  service nginx restart

  # update the dynamic DNS
  if [ $WIKI_FREEDNS_SUBDOMAIN_CODE ]; then
      if [[ $WIKI_FREEDNS_SUBDOMAIN_CODE != $FREEDNS_SUBDOMAIN_CODE ]]; then
          if ! grep -q "$WIKI_DOMAIN_NAME" /usr/bin/dynamicdns; then
              echo "# $WIKI_DOMAIN_NAME" >> /usr/bin/dynamicdns
              echo "wget -O - https://freedns.afraid.org/dynamic/update.php?$WIKI_FREEDNS_SUBDOMAIN_CODE== >> /dev/null 2>&1" >> /usr/bin/dynamicdns
          fi
      fi
  else
      echo 'WARNING: No freeDNS subdomain code given for wiki installation. It is assumed that you are using some other dynamic DNS provider.'
  fi

  # add some post-install instructions
  if ! grep -q "Once you have set up the wiki" /home/$MY_USERNAME/README; then
      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'Wiki' >> /home/$MY_USERNAME/README
      echo '====' >> /home/$MY_USERNAME/README
      echo 'Once you have set up the wiki then remove the install file:' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo "  rm /var/www/$WIKI_DOMAIN_NAME/htdocs/install.php" >> /home/$MY_USERNAME/README
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
  fi

  echo 'install_wiki' >> $COMPLETION_FILE
}

function get_blog_admin_password {
  if [ -f /home/$MY_USERNAME/README ]; then
      if grep -q "Your blog password is" /home/$MY_USERNAME/README; then
          FULLBLOG_ADMIN_PASSWORD=$(cat /home/$MY_USERNAME/README | grep "Your blog password is" | awk -F ':' '{print $2}' | sed 's/^ *//')
      fi
  fi
}

function install_blog {
  if [[ $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_MAILBOX" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" || $SYSTEM_TYPE == "$VARIANT_MEDIA" ]]; then
      return
  fi
  if grep -Fxq "install_blog" $COMPLETION_FILE; then
      return
  fi
  if [ ! $FULLBLOG_DOMAIN_NAME ]; then
      return
  fi

  if [ ! -d /var/www/$FULLBLOG_DOMAIN_NAME ]; then
      mkdir /var/www/$FULLBLOG_DOMAIN_NAME
  fi

  cd /var/www/$FULLBLOG_DOMAIN_NAME
  git clone https://github.com/danpros/htmly htdocs

  if [ ! -f /etc/ssl/private/$FULLBLOG_DOMAIN_NAME.key ]; then
      makecert $FULLBLOG_DOMAIN_NAME
  fi

  echo 'server {' > /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    listen 80;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "    root /var/www/$FULLBLOG_DOMAIN_NAME/htdocs;" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "    server_name $FULLBLOG_DOMAIN_NAME;" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "    error_log /var/www/$FULLBLOG_DOMAIN_NAME/error.log;" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    index index.php;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    charset utf-8;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    client_max_body_size 20m;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    client_body_buffer_size 128k;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # rewrite to front controller as default rule' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location / {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        rewrite ^/(.*) /index.php?q=$uri&$args last;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "    # make sure webfinger and other well known services aren't blocked" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # by denying dot files and rewrite request to the front controller' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ^~ /.well-known/ {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        allow all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        rewrite ^/(.*) /index.php?q=$uri&$args last;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # statically serve these file types when possible' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # otherwise fall back to front controller' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # allow browser to cache them' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # added .htm for advanced source code editor library' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ~* \.(jpg|jpeg|gif|png|ico|css|js|htm|html|ttf|woff|svg)$ {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        expires 30d;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        try_files $uri /index.php?q=$uri&$args;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # block these file types' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ~* \.(tpl|md|tgz|log|out)$ {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        deny all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # or a unix socket' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ~* \.php$ {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        # Zero-day exploit defense.' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        # http://forum.nginx.org/read.php?2,88845,page=3' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "        # Won't work properly (404 error) if the file is not stored on this" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "        # server, which is entirely possible with php-fpm/php-fcgi." >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "        # Comment the 'try_files' line out if you set up php-fpm/php-fcgi on" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "        # another machine. And then cross your fingers that you won't get hacked." >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        try_files $uri $uri/ /index.php;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        # NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        fastcgi_split_path_info ^(.+\.php)(/.+)$;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        # With php5-cgi alone:' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        # fastcgi_pass 127.0.0.1:9000;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        # With php5-fpm:' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        fastcgi_pass unix:/var/run/php5-fpm.sock;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        include fastcgi_params;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        fastcgi_index index.php;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # deny access to all dot files' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ~ /\. {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        deny all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    #deny access to store' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ~ /store {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        deny all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ~ /(data|conf|bin|inc)/ {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '      deny all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ~ /\.ht {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '      deny  all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '}' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo 'server {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    listen 443 ssl;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "    root /var/www/$FULLBLOG_DOMAIN_NAME/htdocs;" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "    server_name $FULLBLOG_DOMAIN_NAME;" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "    error_log /var/www/$FULLBLOG_DOMAIN_NAME/error_ssl.log;" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    index index.php;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    charset utf-8;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    client_max_body_size 20m;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    client_body_buffer_size 128k;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    ssl on;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "    ssl_certificate /etc/ssl/certs/$FULLBLOG_DOMAIN_NAME.crt;" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "    ssl_certificate_key /etc/ssl/private/$FULLBLOG_DOMAIN_NAME.key;" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "    ssl_dhparam /etc/ssl/certs/$FULLBLOG_DOMAIN_NAME.dhparam;" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    ssl_session_timeout 5m;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    ssl_prefer_server_ciphers on;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    ssl_session_cache  builtin:1000  shared:SSL:10m;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "    ssl_protocols $SSL_PROTOCOLS; # not possible to do exclusive" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "    ssl_ciphers '$SSL_CIPHERS';" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    add_header X-Frame-Options DENY;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    add_header X-Content-Type-Options nosniff;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    add_header Strict-Transport-Security "max-age=0;";' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # rewrite to front controller as default rule' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location / {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        rewrite ^/(.*) /index.php?q=$uri&$args last;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "    # make sure webfinger and other well known services aren't blocked" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # by denying dot files and rewrite request to the front controller' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ^~ /.well-known/ {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        allow all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        rewrite ^/(.*) /index.php?q=$uri&$args last;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # statically serve these file types when possible' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # otherwise fall back to front controller' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # allow browser to cache them' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # added .htm for advanced source code editor library' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ~* \.(jpg|jpeg|gif|png|ico|css|js|htm|html|ttf|woff|svg)$ {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        expires 30d;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        try_files $uri /index.php?q=$uri&$args;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # block these file types' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ~* \.(tpl|md|tgz|log|out)$ {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        deny all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # or a unix socket' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ~* \.php$ {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        # Zero-day exploit defense.' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        # http://forum.nginx.org/read.php?2,88845,page=3' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "        # Won't work properly (404 error) if the file is not stored on this" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "        # server, which is entirely possible with php-fpm/php-fcgi." >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "        # Comment the 'try_files' line out if you set up php-fpm/php-fcgi on" >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo "        # another machine. And then cross your fingers that you won't get hacked." >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        try_files $uri $uri/ /index.php;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        # NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        fastcgi_split_path_info ^(.+\.php)(/.+)$;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        # With php5-cgi alone:' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        # fastcgi_pass 127.0.0.1:9000;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        # With php5-fpm:' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        fastcgi_pass unix:/var/run/php5-fpm.sock;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        include fastcgi_params;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        fastcgi_index index.php;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    # deny access to all dot files' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ~ /\. {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        deny all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    #deny access to store' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ~ /store {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '        deny all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ~ /(data|conf|bin|inc)/ {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '      deny all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    location ~ /\.ht {' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '      deny  all;' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME
  echo '}' >> /etc/nginx/sites-available/$FULLBLOG_DOMAIN_NAME

  configure_php

  # blog settings
  cp /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini.example /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini
  sed -i "s|site.url.*|site.url = 'https://$FULLBLOG_DOMAIN_NAME'|g" /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini
  sed -i "s|blog.title.*|blog.title = '$MY_BLOG_TITLE'|g" /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini
  sed -i "s|blog.tagline.*|blog.tagline = '$MY_BLOG_SUBTITLE'|g" /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini
  sed -i 's|timezone.*|timezone = "Europe/London"|g' /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini
  sed -i "s|Your name|$MY_NAME|g" /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini

  # create a user password
  get_blog_admin_password
  if [ ! $FULLBLOG_ADMIN_PASSWORD ]; then
      FULLBLOG_ADMIN_PASSWORD=$(openssl rand -base64 16)
      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'HTMLy Blog' >> /home/$MY_USERNAME/README
      echo '==========' >> /home/$MY_USERNAME/README
      echo "Your blog username: $MY_USERNAME" >> /home/$MY_USERNAME/README
      echo "Your blog password is: $FULLBLOG_ADMIN_PASSWORD" >> /home/$MY_USERNAME/README
      echo "Log into your blog at https://$FULLBLOG_DOMAIN_NAME/login" >> /home/$MY_USERNAME/README
      echo 'Edit your blog title and time zone at:' >> /home/$MY_USERNAME/README
      echo "  /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/config.ini" >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
  fi

  # create a user
  cp /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/users/username.ini.example /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/users/$MY_USERNAME.ini
  HASHED_BLOG_PASSWORD="$(echo -n $FULLBLOG_ADMIN_PASSWORD | sha256sum  | awk -F ' ' '{print $1}')"
  sed -i "s|yourpassword|$HASHED_BLOG_PASSWORD|g" /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/users/$MY_USERNAME.ini
  sed -i 's/encryption = clear/encryption = "sha256"/g' /var/www/$FULLBLOG_DOMAIN_NAME/htdocs/config/users/$MY_USERNAME.ini

  nginx_ensite $FULLBLOG_DOMAIN_NAME
  service php5-fpm restart
  service nginx restart

  # update the dynamic DNS
  if [ $FULLBLOG_FREEDNS_SUBDOMAIN_CODE ]; then
      if [[ $FULLBLOG_FREEDNS_SUBDOMAIN_CODE != $FREEDNS_SUBDOMAIN_CODE ]]; then
          if ! grep -q "$FULLBLOG_DOMAIN_NAME" /usr/bin/dynamicdns; then
              echo "# $FULLBLOG_DOMAIN_NAME" >> /usr/bin/dynamicdns
              echo "wget -O - https://freedns.afraid.org/dynamic/update.php?$FULLBLOG_FREEDNS_SUBDOMAIN_CODE== >> /dev/null 2>&1" >> /usr/bin/dynamicdns
          fi
      fi
  else
      echo 'WARNING: No freeDNS subdomain code given for blog installation. It is assumed that you are using some other dynamic DNS provider.'
  fi

  echo 'install_blog' >> $COMPLETION_FILE
}

function install_gnu_social {
  if grep -Fxq "install_gnu_social" $COMPLETION_FILE; then
      return
  fi
  if [[ $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_MAILBOX" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_MEDIA" ]]; then
      return
  fi
  if [ ! $MICROBLOG_DOMAIN_NAME ]; then
      return
  fi

  install_mariadb
  get_mariadb_password
  repair_databases_script

  apt-get -y --force-yes install php-gettext php5-curl php5-gd php5-mysql git curl php-xml-parser

  if [ ! -d /var/www/$MICROBLOG_DOMAIN_NAME ]; then
      mkdir /var/www/$MICROBLOG_DOMAIN_NAME
  fi
  if [ ! -d /var/www/$MICROBLOG_DOMAIN_NAME/htdocs ]; then
      mkdir /var/www/$MICROBLOG_DOMAIN_NAME/htdocs
  fi

  if [ ! -f /var/www/$MICROBLOG_DOMAIN_NAME/htdocs/index.php ]; then
      cd $INSTALL_DIR
      git clone $MICROBLOG_REPO gnusocial

      rm -rf /var/www/$MICROBLOG_DOMAIN_NAME/htdocs
      mv gnusocial /var/www/$MICROBLOG_DOMAIN_NAME/htdocs
      chmod a+w /var/www/$MICROBLOG_DOMAIN_NAME/htdocs
      chown www-data:www-data /var/www/$MICROBLOG_DOMAIN_NAME/htdocs
      chmod a+w /var/www/$MICROBLOG_DOMAIN_NAME/htdocs/avatar
      chmod a+w /var/www/$MICROBLOG_DOMAIN_NAME/htdocs/background
      chmod a+w /var/www/$MICROBLOG_DOMAIN_NAME/htdocs/file
      chmod +x /var/www/$MICROBLOG_DOMAIN_NAME/htdocs/scripts/maildaemon.php
  fi

  get_mariadb_gnusocial_admin_password
  if [ ! $MICROBLOG_ADMIN_PASSWORD ]; then
      MICROBLOG_ADMIN_PASSWORD=$(openssl rand -base64 32)
      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'GNU Social' >> /home/$MY_USERNAME/README
      echo '==========' >> /home/$MY_USERNAME/README
      echo "Your MariaDB gnusocial admin password is: $MICROBLOG_ADMIN_PASSWORD" >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
  fi

  echo "create database gnusocial;
CREATE USER 'gnusocialadmin'@'localhost' IDENTIFIED BY '$MICROBLOG_ADMIN_PASSWORD';
GRANT ALL PRIVILEGES ON gnusocial.* TO 'gnusocialadmin'@'localhost';
quit" > $INSTALL_DIR/batch.sql
  chmod 600 $INSTALL_DIR/batch.sql
  mysql -u root --password="$MARIADB_PASSWORD" < $INSTALL_DIR/batch.sql
  shred -zu $INSTALL_DIR/batch.sql

  if [ ! -f "/etc/aliases" ]; then
      touch /etc/aliases
  fi
  if grep -q "www-data: root" /etc/aliases; then
      echo 'www-data: root' >> /etc/aliases
  fi
  if grep -q "/var/www/$MICROBLOG_DOMAIN_NAME/htdocs/scripts/maildaemon.php" /etc/aliases; then
      echo "*: /var/www/$MICROBLOG_DOMAIN_NAME/htdocs/scripts/maildaemon.php" >> /etc/aliases
  fi
  newaliases

  # update the dynamic DNS
  if [ $MICROBLOG_FREEDNS_SUBDOMAIN_CODE ]; then
      if [[ $MICROBLOG_FREEDNS_SUBDOMAIN_CODE != $FREEDNS_SUBDOMAIN_CODE ]]; then
          if ! grep -q "$MICROBLOG_DOMAIN_NAME" /usr/bin/dynamicdns; then
              echo "# $MICROBLOG_DOMAIN_NAME" >> /usr/bin/dynamicdns
              echo "wget -O - https://freedns.afraid.org/dynamic/update.php?$MICROBLOG_FREEDNS_SUBDOMAIN_CODE== >> /dev/null 2>&1" >> /usr/bin/dynamicdns
          fi
      fi
  else
      echo 'WARNING: No freeDNS subdomain code given for microblog. It is assumed that you are using some other dynamic DNS provider.'
  fi

  echo 'server {' > /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    listen 80;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo "    server_name $MICROBLOG_DOMAIN_NAME;" >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo "    root /var/www/$MICROBLOG_DOMAIN_NAME/htdocs;" >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo "    error_log /var/www/$MICROBLOG_DOMAIN_NAME/error.log;" >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    index index.php;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    rewrite ^ https://$server_name$request_uri? permanent;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '}' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo 'server {' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    listen 443 ssl;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo "    server_name $MICROBLOG_DOMAIN_NAME;" >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo "    root /var/www/$MICROBLOG_DOMAIN_NAME/htdocs;" >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    index index.php index.html index.htm;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    location /index.php {' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '        fastcgi_split_path_info ^(.+\.php)(/.+)$;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '        fastcgi_index index.php;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '        include fastcgi_params;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '        fastcgi_buffer_size 128k;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '        fastcgi_buffers 4 256k;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '        fastcgi_busy_buffers_size 256k;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '        fastcgi_pass unix:/var/run/php5-fpm.sock;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '        fastcgi_read_timeout 300;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    ssl on;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo "    ssl_certificate /etc/ssl/certs/$MICROBLOG_DOMAIN_NAME.crt;" >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo "    ssl_certificate_key /etc/ssl/private/$MICROBLOG_DOMAIN_NAME.key;" >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo "    ssl_dhparam /etc/ssl/certs/$MICROBLOG_DOMAIN_NAME.dhparam;" >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    ssl_session_timeout 5m;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    ssl_prefer_server_ciphers on;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    ssl_session_cache  builtin:1000  shared:SSL:10m;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo "    ssl_protocols $SSL_PROTOCOLS; # not possible to do exclusive" >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo "    ssl_ciphers '$SSL_CIPHERS';" >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    add_header X-Frame-Options DENY;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    add_header X-Content-Type-Options nosniff;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    add_header Strict-Transport-Security max-age=15768000;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '  location / {' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    rewrite ^(.*)$ /index.php?p=$1 last;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    break;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '  }' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '  location ~* ^/(.*)\.(ico|css|js|gif|png|jpg|bmp|JPG|jpeg)$ {' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo "    root /var/www/$MICROBLOG_DOMAIN_NAME/htdocs;" >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    rewrite ^/(.*)$ /$1 break;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    access_log off;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '    expires max;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '  }' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '  client_max_body_size      15m;' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo "  access_log /var/www/$MICROBLOG_DOMAIN_NAME/access_ssl.log;" >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo "  error_log /var/www/$MICROBLOG_DOMAIN_NAME/error_ssl.log;" >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME
  echo '}' >> /etc/nginx/sites-available/$MICROBLOG_DOMAIN_NAME

  configure_php

  if [ ! -f /etc/ssl/private/$MICROBLOG_DOMAIN_NAME.key ]; then
      makecert $MICROBLOG_DOMAIN_NAME
  fi

  # Ensure that the database gets backed up locally, if remote
  # backups are not being used
  backup_databases_script_header
  echo '' >> /usr/bin/backupdatabases
  echo '# Backup the GNU Social database' >> /usr/bin/backupdatabases
  echo 'TEMPFILE=/root/gnusocial.sql' >> /usr/bin/backupdatabases
  echo 'DAILYFILE=/var/backups/gnusocial_daily.sql' >> /usr/bin/backupdatabases
  echo 'mysqldump --password="$MYSQL_PASSWORD" gnusocial > $TEMPFILE' >> /usr/bin/backupdatabases
  echo 'FILESIZE=$(stat -c%s $TEMPFILE)' >> /usr/bin/backupdatabases
  echo 'if [ "$FILESIZE" -eq "0" ]; then' >> /usr/bin/backupdatabases
  echo '    if [ -f $DAILYFILE ]; then' >> /usr/bin/backupdatabases
  echo '        cp $DAILYFILE $TEMPFILE' >> /usr/bin/backupdatabases
  echo '' >> /usr/bin/backupdatabases
  echo '        # try to restore yesterdays database' >> /usr/bin/backupdatabases
  echo '        mysql -u root --password="$MYSQL_PASSWORD" gnusocial -o < $DAILYFILE' >> /usr/bin/backupdatabases
  echo '' >> /usr/bin/backupdatabases
  echo '        # Send a warning email' >> /usr/bin/backupdatabases
  echo '        echo "Unable to create a backup of the GNU Social database. Attempted to restore from yesterdays backup" | mail -s "GNU Social backup" $EMAIL' >> /usr/bin/backupdatabases
  echo '    else' >> /usr/bin/backupdatabases
  echo '        # Send a warning email' >> /usr/bin/backupdatabases
  echo '        echo "Unable to create a backup of the GNU Social database." | mail -s "GNU Social backup" $EMAIL' >> /usr/bin/backupdatabases
  echo '    fi' >> /usr/bin/backupdatabases
  echo 'else' >> /usr/bin/backupdatabases
  echo '    chmod 600 $TEMPFILE' >> /usr/bin/backupdatabases
  echo '    mv $TEMPFILE $DAILYFILE' >> /usr/bin/backupdatabases
  echo '' >> /usr/bin/backupdatabases
  echo '    # Make the backup readable only by root' >> /usr/bin/backupdatabases
  echo '    chmod 600 $DAILYFILE' >> /usr/bin/backupdatabases
  echo 'fi' >> /usr/bin/backupdatabases

  echo '' >> /etc/cron.weekly/backupdatabasesweekly
  echo '# GNU Social' >> /etc/cron.weekly/backupdatabasesweekly
  echo 'if [ -f /var/backups/gnusocial_weekly.sql ]; then' >> /etc/cron.weekly/backupdatabasesweekly
  echo '  cp -f /var/backups/gnusocial_weekly.sql /var/backups/gnusocial_2weekly.sql' >> /etc/cron.weekly/backupdatabasesweekly
  echo 'fi' >> /etc/cron.weekly/backupdatabasesweekly
  echo 'if [ -f /var/backups/gnusocial_daily.sql ]; then' >> /etc/cron.weekly/backupdatabasesweekly
  echo '  cp -f /var/backups/gnusocial_daily.sql /var/backups/gnusocial_weekly.sql' >> /etc/cron.weekly/backupdatabasesweekly
  echo 'fi' >> /etc/cron.weekly/backupdatabasesweekly

  echo '' >> /etc/cron.monthly/backupdatabasesmonthly
  echo '# GNU Social' >> /etc/cron.monthly/backupdatabasesmonthly
  echo 'if [ -f /var/backups/gnusocial_monthly.sql ]; then' >> /etc/cron.monthly/backupdatabasesmonthly
  echo '  cp -f /var/backups/gnusocial_monthly.sql /var/backups/gnusocial_2monthly.sql' >> /etc/cron.monthly/backupdatabasesmonthly
  echo 'fi' >> /etc/cron.monthly/backupdatabasesmonthly
  echo 'if [ -f /var/backups/gnusocial_weekly.sql ]; then' >> /etc/cron.monthly/backupdatabasesmonthly
  echo '  cp -f /var/backups/gnusocial_weekly.sql /var/backups/gnusocial_monthly.sql' >> /etc/cron.monthly/backupdatabasesmonthly
  echo 'fi' >> /etc/cron.monthly/backupdatabasesmonthly

  echo '/usr/bin/repairdatabase gnusocial' >> /etc/cron.hourly/repair

  nginx_ensite $MICROBLOG_DOMAIN_NAME
  service php5-fpm restart
  service nginx restart

  # some post-install instructions for the user
  if ! grep -q "To set up your microblog" /home/$MY_USERNAME/README; then
      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'Microblog' >> /home/$MY_USERNAME/README
      echo '=========' >> /home/$MY_USERNAME/README
      echo "To set up your microblog go to" >> /home/$MY_USERNAME/README
      echo "https://$MICROBLOG_DOMAIN_NAME/install.php" >> /home/$MY_USERNAME/README
      echo 'and enter the following settings:' >> /home/$MY_USERNAME/README
      echo ' - Set a name for the site' >> /home/$MY_USERNAME/README
      echo ' - Server SSL: enable' >> /home/$MY_USERNAME/README
      echo ' - Hostname: localhost' >> /home/$MY_USERNAME/README
      echo ' - Type: MySql/MariaDB' >> /home/$MY_USERNAME/README
      echo ' - Name: gnusocial' >> /home/$MY_USERNAME/README
      echo ' - DB username: gnusocialadmin' >> /home/$MY_USERNAME/README
      echo " - DB Password; $MICROBLOG_ADMIN_PASSWORD" >> /home/$MY_USERNAME/README
      echo " - Administrator nickname: $MY_USERNAME" >> /home/$MY_USERNAME/README
      echo " - Administrator password: $MICROBLOG_ADMIN_PASSWORD" >> /home/$MY_USERNAME/README
      echo ' - Subscribe to announcements: ticked' >> /home/$MY_USERNAME/README
      echo ' - Site profile: Community' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo "Navigate to https://$MICROBLOG_DOMAIN_NAME and you can then " >> /home/$MY_USERNAME/README
      echo 'complete the configuration via the *Admin* section on the header' >> /home/$MY_USERNAME/README
      echo 'bar.  Some recommended admin settings are:' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'Under the *Site* settings:' >> /home/$MY_USERNAME/README
      echo '    Text limit: 140' >> /home/$MY_USERNAME/README
      echo '    Dupe Limit: 60000' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'Under the *User* settings:' >> /home/$MY_USERNAME/README
      echo '    Bio limit: 1000' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'Under the *Access* settings:' >> /home/$MY_USERNAME/README
      echo '    /Invite only/ ticked' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
  fi

  echo 'install_gnu_social' >> $COMPLETION_FILE
}

function install_redmatrix {
  if grep -Fxq "install_redmatrix" $COMPLETION_FILE; then
      return
  fi
  if [[ $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_MAILBOX" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_MEDIA" ]]; then
      return
  fi
  # if this is exclusively a writer setup
  if [[ $SYSTEM_TYPE == "$VARIANT_SOCIAL" ]]; then
      REDMATRIX_DOMAIN_NAME=$DOMAIN_NAME
      REDMATRIX_FREEDNS_SUBDOMAIN_CODE=$FREEDNS_SUBDOMAIN_CODE
  fi
  if [ ! $REDMATRIX_DOMAIN_NAME ]; then
      return
  fi

  install_mariadb
  get_mariadb_password
  repair_databases_script

  apt-get -y --force-yes install php5-common php5-cli php5-curl php5-gd php5-mysql php5-mcrypt git git

  if [ ! -d /var/www/$REDMATRIX_DOMAIN_NAME ]; then
      mkdir /var/www/$REDMATRIX_DOMAIN_NAME
  fi
  if [ ! -d /var/www/$REDMATRIX_DOMAIN_NAME/htdocs ]; then
      mkdir /var/www/$REDMATRIX_DOMAIN_NAME/htdocs
  fi

  if [ ! -f /var/www/$REDMATRIX_DOMAIN_NAME/htdocs/index.php ]; then
      cd $INSTALL_DIR
      git clone $REDMATRIX_REPO redmatrix

      rm -rf /var/www/$REDMATRIX_DOMAIN_NAME/htdocs
      mv redmatrix /var/www/$REDMATRIX_DOMAIN_NAME/htdocs
      chown -R www-data:www-data /var/www/$REDMATRIX_DOMAIN_NAME/htdocs
      git clone $REDMATRIX_ADDONS_REPO /var/www/$REDMATRIX_DOMAIN_NAME/htdocs/addon
  fi

  get_mariadb_redmatrix_admin_password
  if [ ! $REDMATRIX_ADMIN_PASSWORD ]; then
      REDMATRIX_ADMIN_PASSWORD=$(openssl rand -base64 32)
      echo '' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo 'Red Matrix' >> /home/$MY_USERNAME/README
      echo '==========' >> /home/$MY_USERNAME/README
      echo "Your MariaDB Red Matrix admin password is: $REDMATRIX_ADMIN_PASSWORD" >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
  fi

  echo "create database redmatrix;
CREATE USER 'redmatrixadmin'@'localhost' IDENTIFIED BY '$REDMATRIX_ADMIN_PASSWORD';
GRANT ALL PRIVILEGES ON redmatrix.* TO 'redmatrixadmin'@'localhost';
quit" > $INSTALL_DIR/batch.sql
  chmod 600 $INSTALL_DIR/batch.sql
  mysql -u root --password="$MARIADB_PASSWORD" < $INSTALL_DIR/batch.sql
  shred -zu $INSTALL_DIR/batch.sql

  if ! grep -q "/var/www/$REDMATRIX_DOMAIN_NAME/htdocs" /etc/crontab; then
      echo "12,22,32,42,52 * *   *   *   root cd /var/www/$REDMATRIX_DOMAIN_NAME/htdocs; /usr/bin/timeout 240 /usr/bin/php include/poller.php" >> /etc/crontab
  fi

  # update the dynamic DNS
  if [ $REDMATRIX_FREEDNS_SUBDOMAIN_CODE ]; then
      if [[ $REDMATRIX_FREEDNS_SUBDOMAIN_CODE != $FREEDNS_SUBDOMAIN_CODE ]]; then
          if ! grep -q "$REDMATRIX_DOMAIN_NAME" /usr/bin/dynamicdns; then
              echo "# $REDMATRIX_DOMAIN_NAME" >> /usr/bin/dynamicdns
              echo "wget -O - https://freedns.afraid.org/dynamic/update.php?$REDMATRIX_FREEDNS_SUBDOMAIN_CODE== >> /dev/null 2>&1" >> /usr/bin/dynamicdns
          fi
      fi
  else
      echo 'WARNING: No freeDNS code given for Red Matrix. It is assumed that you are using some other dynamic DNS provider.'
  fi

  echo 'server {' > /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    listen 80;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo "    server_name $REDMATRIX_DOMAIN_NAME;" >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo "    root /var/www/$REDMATRIX_DOMAIN_NAME/htdocs;" >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo "    error_log /var/www/$REDMATRIX_DOMAIN_NAME/error.log;" >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    index index.php;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    rewrite ^ https://$server_name$request_uri? permanent;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '}' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo 'server {' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    listen 443 ssl;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo "    root /var/www/$REDMATRIX_DOMAIN_NAME/htdocs;" >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo "    server_name $REDMATRIX_DOMAIN_NAME;" >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo "    error_log /var/www/$REDMATRIX_DOMAIN_NAME/error_ssl.log;" >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    index index.php;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    charset utf-8;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    client_max_body_size 20m;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    client_body_buffer_size 128k;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    ssl on;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo "    ssl_certificate /etc/ssl/certs/$REDMATRIX_DOMAIN_NAME.crt;" >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo "    ssl_certificate_key /etc/ssl/private/$REDMATRIX_DOMAIN_NAME.key;" >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo "    ssl_dhparam /etc/ssl/certs/$REDMATRIX_DOMAIN_NAME.dhparam;" >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    ssl_session_timeout 5m;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    ssl_prefer_server_ciphers on;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    ssl_session_cache  builtin:1000  shared:SSL:10m;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo "    ssl_protocols $SSL_PROTOCOLS; # not possible to do exclusive" >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo "    ssl_ciphers '$SSL_CIPHERS';" >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    add_header X-Frame-Options DENY;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    add_header X-Content-Type-Options nosniff;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    add_header Strict-Transport-Security max-age=15768000;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    # rewrite to front controller as default rule' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    location / {' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '        rewrite ^/(.*) /index.php?q=$uri&$args last;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo "    # make sure webfinger and other well known services aren't blocked" >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    # by denying dot files and rewrite request to the front controller' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    location ^~ /.well-known/ {' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '        allow all;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '        rewrite ^/(.*) /index.php?q=$uri&$args last;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    # statically serve these file types when possible' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    # otherwise fall back to front controller' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    # allow browser to cache them' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    # added .htm for advanced source code editor library' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    location ~* \.(jpg|jpeg|gif|png|ico|css|js|htm|html|ttf|woff|svg)$ {' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '        expires 30d;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '        try_files $uri /index.php?q=$uri&$args;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    # block these file types' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    location ~* \.(tpl|md|tgz|log|out)$ {' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '        deny all;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    # or a unix socket' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    location ~* \.php$ {' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '        # Zero-day exploit defense.' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '        # http://forum.nginx.org/read.php?2,88845,page=3' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo "        # Won't work properly (404 error) if the file is not stored on this" >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo "        # server, which is entirely possible with php-fpm/php-fcgi." >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo "        # Comment the 'try_files' line out if you set up php-fpm/php-fcgi on" >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo "        # another machine. And then cross your fingers that you won't get hacked." >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '        try_files $uri $uri/ /index.php;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '        # NOTE: You should have "cgi.fix_pathinfo = 0;" in php.ini' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '        fastcgi_split_path_info ^(.+\.php)(/.+)$;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '        # With php5-cgi alone:' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '        # fastcgi_pass 127.0.0.1:9000;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '        # With php5-fpm:' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '        fastcgi_pass unix:/var/run/php5-fpm.sock;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '        include fastcgi_params;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '        fastcgi_index index.php;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '        fastcgi_read_timeout 300;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    # deny access to all dot files' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    location ~ /\. {' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '        deny all;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    location ~ /\.ht {' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '      deny  all;' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '    }' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME
  echo '}' >> /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME

  configure_php

  if [ ! -f /etc/ssl/private/$REDMATRIX_DOMAIN_NAME.key ]; then
      makecert $REDMATRIX_DOMAIN_NAME
  fi

  if [ ! -d /var/www/$REDMATRIX_DOMAIN_NAME/htdocs/view/tpl/smarty3 ]; then
      mkdir /var/www/$REDMATRIX_DOMAIN_NAME/htdocs/view/tpl/smarty3
  fi
  if [ ! -d "/var/www/$REDMATRIX_DOMAIN_NAME/htdocs/store" ]; then
      mkdir "/var/www/$REDMATRIX_DOMAIN_NAME/htdocs/store"
  fi
  if [ ! -d "/var/www/$REDMATRIX_DOMAIN_NAME/htdocs/store/[data]" ]; then
      mkdir "/var/www/$REDMATRIX_DOMAIN_NAME/htdocs/store/[data]"
  fi
  if [ ! -d "/var/www/$REDMATRIX_DOMAIN_NAME/htdocs/store/[data]/smarty3" ]; then
      mkdir "/var/www/$REDMATRIX_DOMAIN_NAME/htdocs/store/[data]/smarty3"
      chmod 777 "/var/www/$REDMATRIX_DOMAIN_NAME/htdocs/store/[data]/smarty3"
  fi
  chmod 777 /var/www/$REDMATRIX_DOMAIN_NAME/htdocs/view/tpl
  chown -R www-data:www-data "/var/www/$REDMATRIX_DOMAIN_NAME/htdocs/store"
  chmod 777 /var/www/$REDMATRIX_DOMAIN_NAME/htdocs/view/tpl/smarty3

  # Ensure that the database gets backed up locally, if remote
  # backups are not being used
  backup_databases_script_header
  echo '' >> /usr/bin/backupdatabases
  echo '# Backup the Red Matrix database' >> /usr/bin/backupdatabases
  echo 'TEMPFILE=/root/redmatrix.sql' >> /usr/bin/backupdatabases
  echo 'DAILYFILE=/var/backups/redmatrix_daily.sql' >> /usr/bin/backupdatabases
  echo 'mysqldump --password="$MYSQL_PASSWORD" redmatrix > $TEMPFILE' >> /usr/bin/backupdatabases
  echo 'FILESIZE=$(stat -c%s $TEMPFILE)' >> /usr/bin/backupdatabases
  echo 'if [ "$FILESIZE" -eq "0" ]; then' >> /usr/bin/backupdatabases
  echo '    if [ -f $DAILYFILE ]; then' >> /usr/bin/backupdatabases
  echo '        cp $DAILYFILE $TEMPFILE' >> /usr/bin/backupdatabases
  echo '' >> /usr/bin/backupdatabases
  echo '        # try to restore yesterdays database' >> /usr/bin/backupdatabases
  echo '        mysql -u root --password="$MYSQL_PASSWORD" redmatrix -o < $DAILYFILE' >> /usr/bin/backupdatabases
  echo '' >> /usr/bin/backupdatabases
  echo '        # Send a warning email' >> /usr/bin/backupdatabases
  echo '        echo "Unable to create a backup of the Red Matrix database. Attempted to restore from yesterdays backup" | mail -s "Red Matrix backup" $EMAIL' >> /usr/bin/backupdatabases
  echo '    else' >> /usr/bin/backupdatabases
  echo '        # Send a warning email' >> /usr/bin/backupdatabases
  echo '        echo "Unable to create a backup of the Red Matrix database." | mail -s "Red Matrix backup" $EMAIL' >> /usr/bin/backupdatabases
  echo '    fi' >> /usr/bin/backupdatabases
  echo 'else' >> /usr/bin/backupdatabases
  echo '    chmod 600 $TEMPFILE' >> /usr/bin/backupdatabases
  echo '    mv $TEMPFILE $DAILYFILE' >> /usr/bin/backupdatabases
  echo '' >> /usr/bin/backupdatabases
  echo '    # Make the backup readable only by root' >> /usr/bin/backupdatabases
  echo '    chmod 600 $DAILYFILE' >> /usr/bin/backupdatabases
  echo 'fi' >> /usr/bin/backupdatabases

  echo '' >> /etc/cron.weekly/backupdatabasesweekly
  echo '# Red Matrix' >> /etc/cron.weekly/backupdatabasesweekly
  echo 'if [ -f /var/backups/redmatrix_weekly.sql ]; then' >> /etc/cron.weekly/backupdatabasesweekly
  echo '  cp -f /var/backups/redmatrix_weekly.sql /var/backups/redmatrix_2weekly.sql' >> /etc/cron.weekly/backupdatabasesweekly
  echo 'fi' >> /etc/cron.weekly/backupdatabasesweekly
  echo 'if [ -f /var/backups/redmatrix_daily.sql ]; then' >> /etc/cron.weekly/backupdatabasesweekly
  echo '  cp -f /var/backups/redmatrix_daily.sql /var/backups/redmatrix_weekly.sql' >> /etc/cron.weekly/backupdatabasesweekly
  echo 'fi' >> /etc/cron.weekly/backupdatabasesweekly

  echo '' >> /etc/cron.monthly/backupdatabasesmonthly
  echo '# Red Matrix' >> /etc/cron.monthly/backupdatabasesmonthly
  echo 'if [ -f /var/backups/redmatrix_monthly.sql ]; then' >> /etc/cron.monthly/backupdatabasesmonthly
  echo '  cp -f /var/backups/redmatrix_monthly.sql /var/backups/redmatrix_2monthly.sql' >> /etc/cron.monthly/backupdatabasesmonthly
  echo 'fi' >> /etc/cron.monthly/backupdatabasesmonthly
  echo 'if [ -f /var/backups/redmatrix_weekly.sql ]; then' >> /etc/cron.monthly/backupdatabasesmonthly
  echo '  cp -f /var/backups/redmatrix_weekly.sql /var/backups/redmatrix_monthly.sql' >> /etc/cron.monthly/backupdatabasesmonthly
  echo 'fi' >> /etc/cron.monthly/backupdatabasesmonthly

  echo '/usr/bin/repairdatabase redmatrix' >> /etc/cron.hourly/repair

  nginx_ensite $REDMATRIX_DOMAIN_NAME
  service php5-fpm restart
  service nginx restart
  service cron restart

  # some post-install instructions for the user
  if ! grep -q "To set up your Red Matrix" /home/$MY_USERNAME/README; then
      echo '' >> /home/$MY_USERNAME/README
      echo "To set up your Red Matrix site go to" >> /home/$MY_USERNAME/README
      echo "https://$REDMATRIX_DOMAIN_NAME" >> /home/$MY_USERNAME/README
      echo 'You will need to have a non self-signed SSL certificate in order' >> /home/$MY_USERNAME/README
      echo "to use Red Matrix. Put the public certificate in /etc/ssl/certs/$REDMATRIX_DOMAIN_NAME.crt" >> /home/$MY_USERNAME/README
      echo "and the private certificate in /etc/ssl/private/$REDMATRIX_DOMAIN_NAME.key." >> /home/$MY_USERNAME/README
      echo 'If there is an intermediate certificate needed (such as with StartSSL) then' >> /home/$MY_USERNAME/README
      echo 'this will need to be concatenated onto the end of the crt file, like this:' >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo "  cat /etc/ssl/certs/$REDMATRIX_DOMAIN_NAME.crt /etc/ssl/chains/startssl-sub.class1.server.ca.pem > /etc/ssl/certs/$REDMATRIX_DOMAIN_NAME.bundle.crt" >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      echo "Then change ssl_certificate to /etc/ssl/certs/$REDMATRIX_DOMAIN_NAME.bundle.crt" >> /home/$MY_USERNAME/README
      echo "within /etc/nginx/sites-available/$REDMATRIX_DOMAIN_NAME" >> /home/$MY_USERNAME/README
      echo '' >> /home/$MY_USERNAME/README
      chown $MY_USERNAME:$MY_USERNAME /home/$MY_USERNAME/README
  fi

  echo 'install_redmatrix' >> $COMPLETION_FILE
}

function script_for_attaching_usb_drive {
  if grep -Fxq "script_for_attaching_usb_drive" $COMPLETION_FILE; then
      return
  fi
  echo '#!/bin/bash' > /usr/bin/attach-music
  echo "if [ -d $USB_MOUNT ]; then" >> /usr/bin/attach-music
  echo "  umount $USB_MOUNT" >> /usr/bin/attach-music
  echo 'fi' >> /usr/bin/attach-music
  echo "if [ ! -d $USB_MOUNT ]; then" >> /usr/bin/attach-music
  echo "  mkdir $USB_MOUNT" >> /usr/bin/attach-music
  echo 'fi' >> /usr/bin/attach-music
  echo "mount /dev/sda1 $USB_MOUNT" >> /usr/bin/attach-music
  echo "chown root:root $USB_MOUNT" >> /usr/bin/attach-music
  echo "chown -R minidlna:minidlna $USB_MOUNT/*" >> /usr/bin/attach-music
  echo 'minidlnad -R' >> /usr/bin/attach-music
  chmod +x /usr/bin/attach-music
  ln -s /usr/bin/attach-music /usr/bin/attach-usb
  ln -s /usr/bin/attach-music /usr/bin/attach-videos
  ln -s /usr/bin/attach-music /usr/bin/attach-pictures
  ln -s /usr/bin/attach-music /usr/bin/attach-media

  echo '#!/bin/bash' > /usr/bin/remove-music
  echo "if [ -d $USB_MOUNT ]; then" >> /usr/bin/remove-music
  echo "  umount $USB_MOUNT" >> /usr/bin/remove-music
  echo "  rm -rf $USB_MOUNT" >> /usr/bin/remove-music
  echo 'fi' >> /usr/bin/remove-music
  chmod +x /usr/bin/remove-music
  ln -s /usr/bin/remove-music /usr/bin/detach-music
  ln -s /usr/bin/remove-music /usr/bin/detach-usb
  ln -s /usr/bin/remove-music /usr/bin/remove-usb
  ln -s /usr/bin/remove-music /usr/bin/detach-media
  ln -s /usr/bin/remove-music /usr/bin/remove-media
  ln -s /usr/bin/remove-music /usr/bin/detach-videos
  ln -s /usr/bin/remove-music /usr/bin/remove-videos
  ln -s /usr/bin/remove-music /usr/bin/detach-pictures
  ln -s /usr/bin/remove-music /usr/bin/remove-pictures

  echo 'script_for_attaching_usb_drive' >> $COMPLETION_FILE
}

function install_dlna_server {
  if grep -Fxq "install_dlna_server" $COMPLETION_FILE; then
      return
  fi
  if [[ $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_MAILBOX" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" ]]; then
      return
  fi
  apt-get -y --force-yes install minidlna

  if [ ! -f /etc/minidlna.conf ]; then
      echo "ERROR: minidlna does not appear to have installed. $CHECK_MESSAGE"
      exit 55
  fi

  sed -i "s|media_dir=/var/lib/minidlna|media_dir=A,/home/$MY_USERNAME/Music|g" /etc/minidlna.conf
  if ! grep -q "/home/$MY_USERNAME/Pictures" /etc/minidlna.conf; then
    echo "media_dir=P,/home/$MY_USERNAME/Pictures" >> /etc/minidlna.conf
  fi
  if ! grep -q "/home/$MY_USERNAME/Videos" /etc/minidlna.conf; then
      echo "media_dir=V,/home/$MY_USERNAME/Videos" >> /etc/minidlna.conf
  fi
  if ! grep -q "$USB_MOUNT/Music" /etc/minidlna.conf; then
      echo "media_dir=A,$USB_MOUNT/Music" >> /etc/minidlna.conf
  fi
  if ! grep -q "$USB_MOUNT/Pictures" /etc/minidlna.conf; then
      echo "media_dir=P,$USB_MOUNT/Pictures" >> /etc/minidlna.conf
  fi
  if ! grep -q "$USB_MOUNT/Videos" /etc/minidlna.conf; then
      echo "media_dir=V,$USB_MOUNT/Videos" >> /etc/minidlna.conf
  fi
  sed -i 's/#root_container=./root_container=B/g' /etc/minidlna.conf
  sed -i 's/#network_interface=/network_interface=eth0/g' /etc/minidlna.conf
  sed -i 's/#friendly_name=/friendly_name="Freedombone Media"/g' /etc/minidlna.conf
  sed -i 's|#db_dir=/var/cache/minidlna|db_dir=/var/cache/minidlna|g' /etc/minidlna.conf
  sed -i 's/#inotify=yes/inotify=yes/g' /etc/minidlna.conf
  sed -i "s|#presentation_url=/|presentation_url=http://localhost:8200|g" /etc/minidlna.conf
  service minidlna force-reload
  service minidlna reload

  echo 'install_dlna_server' >> $COMPLETION_FILE
}

function install_mediagoblin {
  # These instructions don't work and need fixing
  return
  if grep -Fxq "install_mediagoblin" $COMPLETION_FILE; then
      return
  fi
  if [[ $SYSTEM_TYPE == "$VARIANT_CLOUD" || $SYSTEM_TYPE == "$VARIANT_MAILBOX" || $SYSTEM_TYPE == "$VARIANT_CHAT" || $SYSTEM_TYPE == "$VARIANT_WRITER" || $SYSTEM_TYPE == "$VARIANT_SOCIAL" ]]; then
      return
  fi
  # if this is exclusively a writer setup
  if [[ $SYSTEM_TYPE == "$VARIANT_MEDIA" ]]; then
      MEDIAGOBLIN_DOMAIN_NAME=$DOMAIN_NAME
      MEDIAGOBLIN_FREEDNS_SUBDOMAIN_CODE=$FREEDNS_SUBDOMAIN_CODE
  fi
  if [ ! $MEDIAGOBLIN_DOMAIN_NAME ]; then
      return
  fi
  apt-get -y --force-yes install git-core python python-dev python-lxml python-imaging python-virtualenv
  apt-get -y --force-yes install python-gst-1.0 libjpeg8-dev sqlite3 libapache2-mod-fcgid gstreamer1.0-plugins-base gstreamer1.0-plugins-bad gstreamer1.0-plugins-good gstreamer1.0-plugins-ugly gstreamer1.0-libav python-numpy python-scipy libsndfile1-dev
  apt-get -y --force-yes install postgresql postgresql-client python-psycopg2 python-pip autotools-dev automake

  sudo -u postgres createuser -A -D mediagoblin
  sudo -u postgres createdb -E UNICODE -O mediagoblin mediagoblin

  adduser --system mediagoblin

  MEDIAGOBLIN_DOMAIN_ROOT="/srv/$MEDIAGOBLIN_DOMAIN_NAME"
  MEDIAGOBLIN_PATH="$MEDIAGOBLIN_DOMAIN_ROOT/mediagoblin"
  MEDIAGOBLIN_PATH_BIN="$MEDIAGOBLIN_PATH/mediagoblin/bin"

  if [ ! -d $MEDIAGOBLIN_DOMAIN_ROOT ]; then
      mkdir -p $MEDIAGOBLIN_DOMAIN_ROOT
  fi
  cd $MEDIAGOBLIN_DOMAIN_ROOT
  chown -hR mediagoblin: $MEDIAGOBLIN_DOMAIN_ROOT
  su -c "cd $MEDIAGOBLIN_DOMAIN_ROOT; git clone git://gitorious.org/mediagoblin/mediagoblin.git" - mediagoblin
  su -c "cd $MEDIAGOBLIN_PATH; git submodule init" - mediagoblin
  su -c "cd $MEDIAGOBLIN_PATH; git submodule update" - mediagoblin

  #su -c 'cd $MEDIAGOBLIN_PATH; ./experimental-bootstrap.sh' - mediagoblin
  #su -c 'cd $MEDIAGOBLIN_PATH; ./configure' - mediagoblin
  #su -c 'cd $MEDIAGOBLIN_PATH; make' - mediagoblin

  su -c "cd $MEDIAGOBLIN_PATH; virtualenv --system-site-packages ." - mediagoblin
  su -c "cd $MEDIAGOBLIN_PATH_BIN; python setup.py develop" - mediagoblin

  su -c "cp $MEDIAGOBLIN_PATH/mediagoblin.ini $MEDIAGOBLIN_PATH/mediagoblin_local.ini" - mediagoblin
  su -c "cp $MEDIAGOBLIN_PATH/paste.ini $MEDIAGOBLIN_PATH/paste_local.ini" - mediagoblin

  # update the dynamic DNS
  if [ $MEDIAGOBLIN_FREEDNS_SUBDOMAIN_CODE ]; then
      if [[ $MEDIAGOBLIN_FREEDNS_SUBDOMAIN_CODE != $FREEDNS_SUBDOMAIN_CODE ]]; then
          if ! grep -q "$MEDIAGOBLIN_DOMAIN_NAME" /usr/bin/dynamicdns; then
              echo "# $MEDIAGOBLIN_DOMAIN_NAME" >> /usr/bin/dynamicdns
              echo "wget -O - https://freedns.afraid.org/dynamic/update.php?$MEDIAGOBLIN_FREEDNS_SUBDOMAIN_CODE== >> /dev/null 2>&1" >> /usr/bin/dynamicdns
          fi
      fi
  else
      echo 'WARNING: No freeDNS subdomain code given for mediagoblin. It is assumed that you are using some other dynamic DNS provider.'
  fi

  # see https://wiki.mediagoblin.org/Deployment / uwsgi with configs
  apt-get -y --force-yes install uwsgi uwsgi-plugin-python nginx-full supervisor

  echo 'server {' > /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        include /etc/nginx/mime.types;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        autoindex off;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        default_type  application/octet-stream;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        sendfile on;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        # Gzip' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        gzip on;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        gzip_min_length 1024;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        gzip_buffers 4 32k;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        gzip_types text/plain text/html application/x-javascript text/javascript text/xml text/css;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo "        server_name $MEDIAGOBLIN_DOMAIN_NAME;" >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        access_log /var/log/nginx/mg.access.log;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        error_log /var/log/nginx/mg.error.log error;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        #include global/common.conf;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        client_max_body_size 100m;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        add_header X-Content-Type-Options nosniff;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo "        root $MEDIAGOBLIN_PATH/;" >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        location /mgoblin_static/ {' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo "                alias $MEDIAGOBLIN_PATH/static/;" >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        }' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        location /mgoblin_media/ {' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo "                alias $MEDIAGOBL_PATH/media/public/;" >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        }' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        location /theme_static/ {' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        }' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        location /plugin_static/ {' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        }' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        location / {' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '                uwsgi_pass unix:///tmp/mg.uwsgi.sock;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '                uwsgi_param SCRIPT_NAME "/";' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '                include uwsgi_params;' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '        }' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME
  echo '}' >> /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME

  echo 'uwsgi:' > /etc/uwsgi/apps-available/mg.yaml
  echo ' uid: mediagoblin' >> /etc/uwsgi/apps-available/mg.yaml
  echo ' gid: mediagoblin' >> /etc/uwsgi/apps-available/mg.yaml
  echo ' socket: /tmp/mg.uwsgi.sock' >> /etc/uwsgi/apps-available/mg.yaml
  echo ' chown-socket: www-data:www-data' >> /etc/uwsgi/apps-available/mg.yaml
  echo ' plugins: python' >> /etc/uwsgi/apps-available/mg.yaml
  echo " home: $MEDIAGOBLIN_PATH/" >> /etc/uwsgi/apps-available/mg.yaml
  echo " chdir: $MEDIAGOBLIN_PATH/" >> /etc/uwsgi/apps-available/mg.yaml
  echo " ini-paste: $MEDIAGOBLIN_PATH/paste_local.ini" >> /etc/uwsgi/apps-available/mg.yaml

  echo '[program:celery]' > /etc/supervisor/conf.d/mediagoblin.conf
  echo "command=$MEDIAGOBLIN_PATH_BIN/celery worker -l debug" >> /etc/supervisor/conf.d/mediagoblin.conf
  echo '' >> /etc/supervisor/conf.d/mediagoblin.conf
  echo '; Set PYTHONPATH to the directory containing celeryconfig.py' >> /etc/supervisor/conf.d/mediagoblin.conf
  echo "environment=PYTHONPATH='$MEDIAGOBLIN_PATH',MEDIAGOBLIN_CONFIG='$MEDIAGOBLIN_PATH/mediagoblin_local.ini',CELERY_CONFIG_MODULE='mediagoblin.init.celery.from_celery'" >> /etc/supervisor/conf.d/mediagoblin.conf
  echo '' >> /etc/supervisor/conf.d/mediagoblin.conf
  echo "directory=$MEDIAGOBLIN_PATH/" >> /etc/supervisor/conf.d/mediagoblin.conf
  echo 'user=mediagoblin' >> /etc/supervisor/conf.d/mediagoblin.conf
  echo 'numprocs=1' >> /etc/supervisor/conf.d/mediagoblin.conf
  echo '; uncomment below to enable logs saving' >> /etc/supervisor/conf.d/mediagoblin.conf
  echo ";stdout_logfile=/var/log/nginx/celeryd_stdout.log" >> /etc/supervisor/conf.d/mediagoblin.conf
  echo ";stderr_logfile=/var/log/nginx/celeryd_stderr.log" >> /etc/supervisor/conf.d/mediagoblin.conf
  echo 'autostart=true' >> /etc/supervisor/conf.d/mediagoblin.conf
  echo 'autorestart=false' >> /etc/supervisor/conf.d/mediagoblin.conf
  echo 'startsecs=10' >> /etc/supervisor/conf.d/mediagoblin.conf
  echo '' >> /etc/supervisor/conf.d/mediagoblin.conf
  echo '; Need to wait for currently executing tasks to finish at shutdown.' >> /etc/supervisor/conf.d/mediagoblin.conf
  echo '; Increase this if you have very long running tasks.' >> /etc/supervisor/conf.d/mediagoblin.conf
  echo 'stopwaitsecs = 600' >> /etc/supervisor/conf.d/mediagoblin.conf

  ln -s /etc/nginx/sites-available/$MEDIAGOBLIN_DOMAIN_NAME /etc/nginx/sites-enabled/
  ln -s /etc/uwsgi/apps-available/mg.yaml /etc/uwsgi/apps-enabled/

  # change settings
  sed -i "s/notice@mediagoblin.example.org/$MY_EMAIL_ADDRESS/g" $MEDIAGOBLIN_PATH/mediagoblin_local.ini
  sed -i 's/email_debug_mode = true/email_debug_mode = false/g' $MEDIAGOBLIN_PATH/mediagoblin_local.ini
  sed -i 's|# sql_engine = postgresql:///mediagoblin|sql_engine = postgresql:///mediagoblin|g' $MEDIAGOBLIN_PATH/mediagoblin_local.ini

  # add extra media types
  if grep -q "media_types.audio" $MEDIAGOBLIN_PATH/mediagoblin_local.ini; then
      echo '[[mediagoblin.media_types.audio]]' >> $MEDIAGOBLIN_PATH/mediagoblin_local.ini
  fi
  if grep -q "media_types.video" $MEDIAGOBLIN_PATH/mediagoblin_local.ini; then
      echo '[[mediagoblin.media_types.video]]' >> $MEDIAGOBLIN_PATH/mediagoblin_local.ini
  fi
  if grep -q "media_types.stl" $MEDIAGOBLIN_PATH/mediagoblin_local.ini; then
      echo '[[mediagoblin.media_types.stl]]' >> $MEDIAGOBLIN_PATH/mediagoblin_local.ini
  fi

  su -c "cd $MEDIAGOBLIN_PATH_BIN; pip install scikits.audiolab" - mediagoblin
  su -c "cd $MEDIAGOBLIN_PATH_BIN; gmg dbupdate" - mediagoblin

  # systemd init scripts

  echo '[Unit]' > /etc/systemd/system/gmg.service
  echo 'Description=Mediagoblin' >> /etc/systemd/system/gmg.service
  echo '' >> /etc/systemd/system/gmg.service
  echo '[Service]' >> /etc/systemd/system/gmg.service
  echo 'Type=forking' >> /etc/systemd/system/gmg.service
  echo 'User=mediagoblin' >> /etc/systemd/system/gmg.service
  echo 'Group=mediagoblin' >> /etc/systemd/system/gmg.service
  echo '#Environment=CELERY_ALWAYS_EAGER=true' >> /etc/systemd/system/gmg.service
  echo 'Environment=CELERY_ALWAYS_EAGER=false' >> /etc/systemd/system/gmg.service
  echo "WorkingDirectory=$MEDIAGOBLIN_PATH" >> /etc/systemd/system/gmg.service
  echo "ExecStart=$MEDIAGOBLIN_PATH_BIN/paster serve $MEDIAGOBLIN_PATH/paste_local.ini --pid-file=/var/run/mediagoblin/paster.pid --log-file=/var/log/nginx/mediagoblin_paster.log --daemon --server-name=fcgi fcgi_host=127.0.0.1 fcgi_port=26543" >> /etc/systemd/system/gmg.service
  echo "ExecStop=$MEDIAGOBLIN_PATH_BIN/paster serve --pid-file=/var/run/mediagoblin/paster.pid $MEDIAGOBLIN_PATH/paste_local.ini stop" >> /etc/systemd/system/gmg.service
  echo 'PIDFile=/var/run/mediagoblin/mediagoblin.pid' >> /etc/systemd/system/gmg.service
  echo '' >> /etc/systemd/system/gmg.service
  echo '[Install]' >> /etc/systemd/system/gmg.service
  echo 'WantedBy=multi-user.target' >> /etc/systemd/system/gmg.service


  echo '[Unit]' > /etc/systemd/system/gmg-celeryd.service
  echo 'Description=Mediagoblin Celeryd' >> /etc/systemd/system/gmg-celeryd.service
  echo '' >> /etc/systemd/system/gmg-celeryd.service
  echo '[Service]' >> /etc/systemd/system/gmg-celeryd.service
  echo 'User=mediagoblin' >> /etc/systemd/system/gmg-celeryd.service
  echo 'Group=mediagoblin' >> /etc/systemd/system/gmg-celeryd.service
  echo 'Type=simple' >> /etc/systemd/system/gmg-celeryd.service
  echo "WorkingDirectory=$MEDIAGOBLIN_PATH" >> /etc/systemd/system/gmg-celeryd.service
  echo "Environment='MEDIAGOBLIN_CONFIG=$MEDIAGOBLIN_PATH/mediagoblin_local.ini' CELERY_CONFIG_MODULE=mediagoblin.init.celery.from_celery" >> /etc/systemd/system/gmg-celeryd.service
  echo "ExecStart=$MEDIAGOBLIN_PATH_BIN/celeryd" >> /etc/systemd/system/gmg-celeryd.service
  echo 'PIDFile=/var/run/mediagoblin/mediagoblin-celeryd.pid' >> /etc/systemd/system/gmg-celeryd.service
  echo '' >> /etc/systemd/system/gmg-celeryd.service
  echo '[Install]' >> /etc/systemd/system/gmg-celeryd.service
  echo 'WantedBy=multi-user.target' >> /etc/systemd/system/gmg-celeryd.service

  systemctl start gmg.service
  systemctl start gmg-celeryd.service

  echo 'install_mediagoblin' >> $COMPLETION_FILE
}

function create_upgrade_script {
  if grep -Fxq "create_upgrade_script" $COMPLETION_FILE; then
      return
  fi
  echo '#!/bin/bash' > /etc/cron.weekly/$UPGRADE_SCRIPT_NAME
  echo '' >> /etc/cron.weekly/$UPGRADE_SCRIPT_NAME
  echo 'apt-get -y update' >> /etc/cron.weekly/$UPGRADE_SCRIPT_NAME
  echo 'apt-get -y --force-yes upgrade' >> /etc/cron.weekly/$UPGRADE_SCRIPT_NAME
  if grep -Fxq "install_redmatrix" $COMPLETION_FILE; then
      echo "cd /var/www/$REDMATRIX_DOMAIN_NAME/htdocs" >> /etc/cron.weekly/$UPGRADE_SCRIPT_NAME
      echo 'git stash' >> /etc/cron.weekly/$UPGRADE_SCRIPT_NAME
      echo 'git stash drop' >> /etc/cron.weekly/$UPGRADE_SCRIPT_NAME
      echo 'git pull' >> /etc/cron.weekly/$UPGRADE_SCRIPT_NAME
      echo "cd /var/www/$REDMATRIX_DOMAIN_NAME/htdocs/addon" >> /etc/cron.weekly/$UPGRADE_SCRIPT_NAME
      echo 'git stash' >> /etc/cron.weekly/$UPGRADE_SCRIPT_NAME
      echo 'git stash drop' >> /etc/cron.weekly/$UPGRADE_SCRIPT_NAME
      echo 'git pull' >> /etc/cron.weekly/$UPGRADE_SCRIPT_NAME
  fi
  if grep -Fxq "install_gnu_social" $COMPLETION_FILE; then
      echo "cd /var/www/$MICROBLOG_DOMAIN_NAME/htdocs" >> /etc/cron.weekly/$UPGRADE_SCRIPT_NAME
      echo 'git stash' >> /etc/cron.weekly/$UPGRADE_SCRIPT_NAME
      echo 'git stash drop' >> /etc/cron.weekly/$UPGRADE_SCRIPT_NAME
      echo 'git pull' >> /etc/cron.weekly/$UPGRADE_SCRIPT_NAME
  fi
  if grep -Fxq "install_blog" $COMPLETION_FILE; then
      echo "cd /var/www/$FULLBLOG_DOMAIN_NAME/htdocs" >> /etc/cron.weekly/$UPGRADE_SCRIPT_NAME
      echo 'git stash' >> /etc/cron.weekly/$UPGRADE_SCRIPT_NAME
      echo 'git stash drop' >> /etc/cron.weekly/$UPGRADE_SCRIPT_NAME
      echo 'git pull' >> /etc/cron.weekly/$UPGRADE_SCRIPT_NAME
  fi
  echo 'exit 0' >> /etc/cron.weekly/$UPGRADE_SCRIPT_NAME
  chmod +x /etc/cron.weekly/$UPGRADE_SCRIPT_NAME
  echo 'create_upgrade_script' >> $COMPLETION_FILE
}

function intrusion_detection {
  if grep -Fxq "intrusion_detection" $COMPLETION_FILE; then
      return
  fi
  apt-get -y --force-yes install tripwire
  apt-get -y --force-yes autoremove
  cd /etc/tripwire
  cp site.key $DOMAIN_NAME-site.key
  echo ''
  echo ''
  echo '*** Installing intrusion detection. Press Enter when asked for the local and site passphrases. ***'
  echo ''
  echo ''
  tripwire --init

  # make a script for easy resetting of the tripwire
  echo '#!/bin/sh' > /usr/bin/reset-tripwire
  echo 'tripwire --update-policy --secure-mode low /etc/tripwire/twpol.txt' >> /usr/bin/reset-tripwire
  chmod +x /usr/bin/reset-tripwire

  reset-tripwire
  sed -i 's/SYSLOGREPORTING =true/#SYSLOGREPORTING =false/g' /etc/tripwire/twcfg.txt
  sed -i '/# These files change the behavior of the root account/,/}/ s/.*//g' /etc/tripwire/twpol.txt
  reset-tripwire

  echo 'intrusion_detection' >> $COMPLETION_FILE
}

function install_final {
  if grep -Fxq "install_final" $COMPLETION_FILE; then
      return
  fi
  # unmount any attached usb drive
  if [ -d $USB_MOUNT ]; then
      umount $USB_MOUNT
      rm -rf $USB_MOUNT
  fi
  echo 'install_final' >> $COMPLETION_FILE
  echo ''
  echo '  *** Freedombone installation is complete. Rebooting... ***'
  echo ''
  if [ -f "/home/$MY_USERNAME/README" ]; then
      echo "See /home/$MY_USERNAME/README for post-installation instructions."
      echo ''
  fi
  reboot
}

read_configuration
argument_checks
remove_default_user
configure_firewall
configure_firewall_for_ssh
configure_firewall_for_dns
configure_firewall_for_ftp
configure_firewall_for_web_access
remove_proprietary_repos
change_debian_repos
enable_backports
configure_dns
initial_setup
enforce_good_passwords
install_editor
change_login_message
update_the_kernel
enable_zram
random_number_generator
set_your_domain_name
time_synchronisation
configure_internet_protocol
configure_ssh
check_hwrng
search_for_attached_usb_drive
regenerate_ssh_keys
script_to_make_self_signed_certificates
create_upgrade_script
configure_email
create_procmail
#spam_filtering
configure_imap
configure_gpg
encrypt_incoming_email
#encrypt_outgoing_email
email_client
configure_firewall_for_email
folders_for_mailing_lists
folders_for_email_addresses
dynamic_dns_freedns
create_public_mailing_list
#create_private_mailing_list
encrypt_all_email
import_email
script_for_attaching_usb_drive
install_web_server
configure_firewall_for_web_server
install_owncloud
install_xmpp
configure_firewall_for_xmpp
install_irc_server
configure_firewall_for_irc
install_wiki
install_blog
install_gnu_social
install_redmatrix
install_dlna_server
install_mediagoblin
create_backup_script
create_restore_script
backup_to_friends_servers
restore_from_friend
intrusion_detection
install_final
echo 'Freedombone installation is complete'
exit 0