Update of the home install setup script

- "hubzilla" replaced by "zotserver" in file names and file content when relevant
- Nginx can now be installed as the web server (Apache still chosen by default in the config file)
- Setup script now allows installation of multiple hub/instances on the same server
- Daily cron jobs script was updated an splitted : one global script launches shared commands
(SSL cert renewal + global backup on external device) and every instance has its own script for
git pull (individual scripts are launched by the global one)

1 files changed, 793 insertions, 0 deletions

diff --git a/.homeinstall/zotserver-setup.sh b/.homeinstall/zotserver-setup.sh
new file mode 100755
index 000000000..42ff6685d
--- /dev/null
+++ b/.homeinstall/zotserver-setup.sh
@@ -0,0 +1,793 @@
+#!/bin/bash
+#
+# How to use
+# ----------
+#
+# This file automates the installation of
+# - hubzilla: https://zotlabs.org/page/hubzilla/hubzilla-project and
+# - zap: https://zotlabs.com/zap/
+# - misty : https://zotlabs.com/misty/
+# - osada : https://codeberg.org/zot/osada
+# - redmatrix : https://codeberg.org/zot/redmatrix
+# under Debian Linux "Buster"
+#
+# 1) Copy the file "zotserver-config.txt.template" to "zotserver-config.txt"
+#       Follow the instuctions there
+#
+# 2) Switch to user "root" by typing "su -"
+#
+# 3) Run with "./zotserver-setup.sh"
+#       If this fails check if you can execute the script.
+#       - To make it executable type "chmod +x zotserver-setup.sh"
+#       - or run "bash zotserver-setup.sh"
+#
+#
+# What does this script do basically?
+# -----------------------------------
+#
+# This file automates the installation of a Zot hub/instance under Debian Linux
+# - install
+#        * apache webserver,
+#        * php,
+#        * mariadb - the database for zotserver,
+#        * adminer,
+#        * git to download and update addons
+# - configure cron
+#        * "Run.php" for regular background processes of your Zot hub/instance
+#        * "apt-get update" and "apt-get dist-upgrade" and "apt-get autoremove" to keep linux up-to-date
+#        * run command to keep the IP up-to-date > DynDNS provided by selfHOST.de or freedns.afraid.org
+#        * backup your server's database and files (rsync)
+# - run letsencrypt to create, register and use a certifacte for https
+#
+#
+# Discussion
+# ----------
+#
+# Security - password  is the same for mysql-server, phpmyadmin and your hub/instance db
+# - The script runs into installation errors for phpmyadmin if it uses
+#   different passwords. For the sake of simplicity one single password.
+#
+# How to restore from backup
+# --------------------------
+#
+# (Some explanations here would certainly be useful)
+#
+# Daily backup
+# ------------
+#
+# The installation
+# - writes a shell script in /var/www/
+# - creates a daily cron that runs this script
+#
+# The script makes a (daily) backup of all relevant files
+# - /var/lib/mysql/ > database
+# - /var/www/ > hubzilla/zap/misty from git repository
+# - /etc/letsencrypt/ > certificates
+#
+# The backup will be written on an external disk compatible to LUKS+ext4 (see zotserver-config.txt)
+#
+# How to restore from backup
+# --------------------------
+#
+# (Some explanations here would certainly be useful)
+#
+#
+# Credits
+# -------
+#
+# The script is based on Thomas Willinghams script "debian-setup.sh"
+# which he used to install the red#matrix.
+#
+# The documentation for bash is here
+# https://www.gnu.org/software/bash/manual/bash.html
+#
+function check_sanity {
+    # Do some sanity checking.
+    print_info "Sanity check..."
+    if [ $(/usr/bin/id -u) != "0" ]
+    then
+        die 'Must be run by root user'
+    fi
+
+    if [ -f /etc/lsb-release ]
+    then
+        die "Distribution is not supported"
+    fi
+    if [ ! -f /etc/debian_version ]
+    then
+        die "Debian is supported only"
+    fi
+    if ! grep -q 'Linux 10' /etc/issue
+    then
+        die "Linux 10 (buster) is supported only"x
+    fi
+}
+
+function check_config {
+    print_info "config check..."
+    # Check for required parameters
+    if [ -z "$db_pass" ]
+    then
+        die "db_pass not set in $configfile"
+    fi
+    if [ -z "$le_domain" ]
+    then
+        die "le_domain not set in $configfile"
+    fi
+    # backup is important and should be checked
+	if [ -n "$backup_device_name" ]
+	then
+		if [ ! -d "$backup_mount_point" ]
+		then
+			mkdir "$backup_mount_point"
+		fi
+		device_mounted=0
+		if fdisk -l | grep -i "$backup_device_name.*linux"
+		then
+		    print_info "ok - filesystem of external device is linux"
+	        if [ -n "$backup_device_pass" ]
+	        then
+	            echo "$backup_device_pass" | cryptsetup luksOpen $backup_device_name cryptobackup
+	            if mount /dev/mapper/cryptobackup /media/zotserver_backup
+	            then
+                    device_mounted=1
+	                print_info "ok - could encrypt and mount external backup device"
+                	umount /media/zotserver_backup
+	            else
+            		print_warn "backup to external device will fail because encryption failed"
+	            fi
+                cryptsetup luksClose cryptobackup
+            else
+	            if mount $backup_device_name /media/zotserver_backup
+	            then
+                    device_mounted=1
+	                print_info "ok - could mount external backup device"
+                	umount /media/zotserver_backup
+	            else
+            		print_warn "backup to external device will fail because mount failed"
+	            fi
+            fi
+		else
+        	print_warn "backup to external device will fail because filesystem is either not linux or 'backup_device_name' is not correct in $configfile"
+		fi
+        if [ $device_mounted == 0 ]
+        then
+            die "backup device not ready"
+        fi
+	fi
+}
+
+function die {
+    echo "ERROR: $1" > /dev/null 1>&2
+    exit 1
+}
+
+
+function update_upgrade {
+    print_info "updated and upgrade..."
+    # Run through the apt-get update/upgrade first. This should be done before
+    # we try to install any package
+    apt-get -q -y update && apt-get -q -y dist-upgrade
+    print_info "updated and upgraded linux"
+}
+
+function check_install {
+    if [ -z "`which "$1" 2>/dev/null`" ]
+    then
+        # export DEBIAN_FRONTEND=noninteractive ... answers from the package
+        # configuration database
+        # - q ... without progress information
+        # - y ... answer interactive questions with "yes"
+        # DEBIAN_FRONTEND=noninteractive apt-get --no-install-recommends -q -y install $2
+        DEBIAN_FRONTEND=noninteractive apt-get -q -y install $2
+        print_info "installed $2 installed for $1"
+    else
+        print_warn "$2 already installed"
+    fi
+}
+
+function nocheck_install {
+    # export DEBIAN_FRONTEND=noninteractive ... answers from the package configuration database
+    # - q ... without progress information
+    # - y ... answer interactive questions with "yes"
+    # DEBIAN_FRONTEND=noninteractive apt-get --no-install-recommends -q -y install $2
+    # DEBIAN_FRONTEND=noninteractive apt-get --install-suggests -q -y install $1
+    DEBIAN_FRONTEND=noninteractive apt-get -q -y install $1
+    print_info "installed $1"
+}
+
+
+function print_info {
+    echo -n -e '\e[1;34m'
+    echo -n $1
+    echo -e '\e[0m'
+}
+
+function print_warn {
+    echo -n -e '\e[1;31m'
+    echo -n $1
+    echo -e '\e[0m'
+}
+
+function stop_zotserver {
+    if [ $webserver = "nginx" ]
+    then
+        print_info "stopping nginx webserver..."
+        systemctl stop nginx
+    elif [ $webserver = "apache" ]
+    then
+        print_info "stopping apache webserver..."
+        systemctl stop apache2
+    fi
+    print_info "stopping mysql db..."
+    systemctl stop mariadb
+}
+
+function install_apache {
+    print_info "installing apache..."
+    nocheck_install "apache2 apache2-utils"
+    a2enmod rewrite
+    systemctl restart apache2
+}
+
+function install_nginx {
+    print_info "installing nginx..."
+    nocheck_install "nginx"
+    systemctl restart nginx
+}
+
+function add_vhost {
+    print_info "adding apache vhost"
+    echo "<VirtualHost *:80>" >> "/etc/apache2/sites-available/${le_domain}.conf"
+    echo "ServerName ${le_domain}" >> "/etc/apache2/sites-available/${le_domain}.conf"
+    echo "DocumentRoot $install_path" >> "/etc/apache2/sites-available/${le_domain}.conf"
+    echo "</VirtualHost>"  >> "/etc/apache2/sites-available/${le_domain}.conf"
+    a2ensite $le_domain
+}
+
+function add_nginx_block {
+    print_info "adding nginx block"
+    sed "s|SERVER_NAME|${le_domain}|g;s|INSTALL_PATH|${install_path}|g;s|ZOTSERVER_LOG|${install_folder}-${zotserver}.log|;s|PHP_FPM_SOCK|$(ls /var/run/php/*sock)|;" nginx-zotserver.conf.template >> /etc/nginx/sites-enabled/${le_domain}.conf
+    ln -s /etc/nginx/sites-enabled/${le_domain}.conf /etc/nginx/sites-available/
+}
+
+function install_imagemagick {
+    print_info "installing imagemagick..."
+    nocheck_install "imagemagick"
+}
+
+function install_curl {
+    print_info "installing curl..."
+    nocheck_install "curl"
+}
+
+function install_wget {
+    print_info "installing wget..."
+    nocheck_install "wget"
+}
+
+function install_sendmail {
+    print_info "installing sendmail..."
+    nocheck_install "sendmail sendmail-bin"
+}
+
+function install_php {
+    # openssl and mbstring are included in libapache2-mod-php
+    print_info "installing php..."
+    if [ $webserver = "nginx" ]
+    then
+        nocheck_install "php php-pear php-curl php-gd php-mbstring php-xml php-zip php-fpm"
+        sed -i "s/^upload_max_filesize =.*/upload_max_filesize = 100M/g" /etc/php/7.3/fpm/php.ini
+        sed -i "s/^post_max_size =.*/post_max_size = 100M/g" /etc/php/7.3/fpm/php.ini
+        systemctl reload php7.3-fpm
+    elif [ $webserver = "apache" ]
+    then
+        nocheck_install "libapache2-mod-php php php-pear php-curl php-gd php-mbstring php-xml php-zip"
+        sed -i "s/^upload_max_filesize =.*/upload_max_filesize = 100M/g" /etc/php/7.3/apache2/php.ini
+        sed -i "s/^post_max_size =.*/post_max_size = 100M/g" /etc/php/7.3/apache2/php.ini
+    fi
+}
+
+function install_mysql {
+    print_info "installing mysql..."
+    if [ -z "$mysqlpass" ]
+    then
+        die "mysqlpass not set in $configfile"
+    fi
+	if type mysql ; then
+		echo "Yes, mysql is installed"
+	else
+		echo "mariadb-server"
+		nocheck_install "mariadb-server"
+        systemctl status mariadb
+        systemctl start mariadb
+        mysql --user=root <<_EOF_
+UPDATE mysql.user SET Password=PASSWORD('${mysqlpass}') WHERE User='root';
+DELETE FROM mysql.user WHERE User='';
+DROP DATABASE IF EXISTS test;
+DELETE FROM mysql.db WHERE Db='test' OR Db='test\\_%';
+FLUSH PRIVILEGES;
+_EOF_
+    fi
+}
+
+function install_adminer {
+    print_info "installing adminer..."
+    nocheck_install "adminer"
+    if [ ! -f /etc/adminer/adminer.conf ]
+    then
+        echo "Alias /adminer /usr/share/adminer/adminer" > /etc/adminer/adminer.conf
+        ln -s /etc/adminer/adminer.conf /etc/apache2/conf-available/adminer.conf
+    else
+        print_info "file /etc/adminer/adminer.conf exists already"
+    fi
+
+    a2enmod rewrite
+
+    if [ ! -f /etc/apache2/apache2.conf ]
+    then
+        die "could not find file /etc/apache2/apache2.conf"
+    fi
+    sed -i \
+        "s/AllowOverride None/AllowOverride all/" \
+        /etc/apache2/apache2.conf
+
+    a2enconf adminer
+    systemctl restart mariadb
+    systemctl reload apache2
+}
+
+function create_zotserver_db {
+    print_info "creating zotserver database..."
+    if [ -z "$zotserver_db_name" ]
+    then
+        zotserver_db_name=$zotserver
+    fi
+    if [ -z "$zotserver_db_user" ]
+    then
+        zotserver_db_user=$zotserver
+    fi
+    if [ -z "$zotserver_db_pass" ]
+    then
+        die "zotserver_db_pass not set in $configfile"
+    fi
+    systemctl restart mariadb
+    # Make sure we don't write over an already existing database if we install more than one Zot hub/instance
+    if [ -z $(mysql -h localhost -u root -p$mysqlpass -e "SHOW DATABASES;" | grep $zotserver_db_name) ]
+    then
+        Q1="CREATE DATABASE IF NOT EXISTS $zotserver_db_name;"
+        Q2="GRANT USAGE ON *.* TO $zotserver_db_user@localhost IDENTIFIED BY '$zotserver_db_pass';"
+        Q3="GRANT ALL PRIVILEGES ON $zotserver_db_name.* to $zotserver_db_user@localhost identified by '$zotserver_db_pass';"
+        Q4="FLUSH PRIVILEGES;"
+        SQL="${Q1}${Q2}${Q3}${Q4}"
+        mysql -uroot -p$mysqlpass -e "$SQL"
+    else
+        die "Can't write over an already existing database!"
+    fi
+}
+
+function run_freedns {
+    print_info "run freedns (dynamic IP)..."
+    if [ -z "$freedns_key" ]
+    then
+        print_info "freedns was not started because 'freedns_key' is empty in $configfile"
+    else
+        if [ -n "$selfhost_user" ]
+        then
+            die "You can not use freeDNS AND selfHOST for dynamic IP updates ('freedns_key' AND 'selfhost_user' set in $configfile)"
+        fi
+        wget --no-check-certificate -O - http://freedns.afraid.org/dynamic/update.php?$freedns_key
+    fi
+}
+
+function install_run_selfhost {
+    print_info "install and start selfhost (dynamic IP)..."
+    if [ -z "$selfhost_user" ]
+    then
+        print_info "selfHOST was not started because 'selfhost_user' is empty in $configfile"
+    else
+        if [ -n "$freedns_key" ]
+        then
+            die "You can not use freeDNS AND selfHOST for dynamic IP updates ('freedns_key' AND 'selfhost_user' set in $configfile)"
+        fi
+        if [ -z "$selfhost_pass" ]
+        then
+            die "selfHOST was not started because 'selfhost_pass' is empty in $configfile"
+        fi
+        if [ ! -d $selfhostdir ]
+        then
+            mkdir $selfhostdir
+        fi
+        # the old way
+        # https://carol.selfhost.de/update?username=123456&password=supersafe
+        #
+        # the prefered way
+        wget --output-document=$selfhostdir/$selfhostscript http://jonaspasche.de/selfhost-updater
+        echo "router" > $selfhostdir/device
+        echo "$selfhost_user" > $selfhostdir/user
+        echo "$selfhost_pass" > $selfhostdir/pass
+        bash $selfhostdir/$selfhostscript update
+    fi
+}
+
+function ping_domain {
+    print_info "ping domain $domain..."
+    # Is the domain resolved? Try to ping 6 times à 10 seconds
+    COUNTER=0
+    for i in {1..6}
+    do
+        print_info "loop $i for ping -c 1 $domain ..."
+        if ping -c 4 -W 1 $le_domain
+        then
+            print_info "$le_domain resolved"
+            break
+        else
+            if [ $i -gt 5 ]
+            then
+                die "Failed to: ping -c 1 $domain not resolved"
+            fi
+        fi
+        sleep 10
+    done
+    sleep 5
+}
+
+function configure_cron_freedns {
+    print_info "configure cron for freedns..."
+    if [ -z "$freedns_key" ]
+    then
+        print_info "freedns is not configured because freedns_key is empty in $configfile"
+    else
+        # Use cron for dynamich ip update
+        #   - at reboot
+        #   - every 30 minutes
+        if [ -z "`grep 'freedns.afraid.org' /etc/crontab`" ]
+        then
+            echo "@reboot root http://freedns.afraid.org/dynamic/update.php?$freedns_key > /dev/null 2>&1" >> /etc/crontab
+            echo "*/30 * * * * root wget --no-check-certificate -O - http://freedns.afraid.org/dynamic/update.php?$freedns_key > /dev/null 2>&1" >> /etc/crontab
+        else
+            print_info "cron for freedns was configured already"
+        fi
+    fi
+}
+
+function configure_cron_selfhost {
+    print_info "configure cron for selfhost..."
+    if [ -z "$selfhost_user" ]
+    then
+        print_info "selfhost is not configured because selfhost_key is empty in $configfile"
+    else
+        # Use cron for dynamich ip update
+        #   - at reboot
+        #   - every 5 minutes
+        if [ -z "`grep 'selfhost-updater.sh' /etc/crontab`" ]
+        then
+            echo "@reboot root bash /etc/selfhost/selfhost-updater.sh update > /dev/null 2>&1" >> /etc/crontab
+            echo "*/5 * * * * root /bin/bash /etc/selfhost/selfhost-updater.sh update > /dev/null 2>&1" >> /etc/crontab
+        else
+            print_info "cron for selfhost was configured already"
+        fi
+    fi
+}
+
+function install_letsencrypt {
+    print_info "installing let's encrypt ..."
+    # check if user gave domain
+    if [ -z "$le_domain" ]
+    then
+        die "Failed to install let's encrypt: 'le_domain' is empty in $configfile"
+    fi
+    if [ -z "$le_email" ]
+    then
+        die "Failed to install let's encrypt: 'le_email' is empty in $configfile"
+    fi
+    if [ $webserver = "nginx" ]
+    then
+        nocheck_install "certbot"
+        print_info "run certbot..."
+        systemctl stop nginx
+        certbot certonly --standalone -d $le_domain -m $le_email --agree-tos --non-interactive
+        systemctl start nginx
+    elif [ $webserver = "apache" ]
+    then
+        nocheck_install "certbot python-certbot-apache"
+        print_info "run certbot ..."
+	certbot --apache -w $install_path -d $le_domain -m $le_email --agree-tos --non-interactive --redirect --hsts --uir
+        service apache2 restart
+    fi
+}
+
+function check_https {
+    print_info "checking httpS > testing ..."
+    url_https=https://$le_domain
+    wget_output=$(wget -nv --spider --max-redirect 0 $url_https)
+    if [ $? -ne 0 ]
+    then
+        print_warn "check not ok"
+    else
+        print_info "check ok"
+    fi
+}
+
+function zotserver_name {
+    if git remote -v | grep -i "origin.*hubzilla.*"
+    then
+        zotserver=hubzilla
+    elif git remote -v | grep -i "origin.*zap.*"
+    then
+        zotserver=zap
+    elif git remote -v | grep -i "origin.*misty.*"
+    then
+        zotserver=misty
+    elif git remote -v | grep -i "origin.*osada.*"
+    then
+        zotserver=osada
+    elif git remote -v | grep -i "origin.*redmatrix.*"
+    then
+        zotserver=redmatrix
+    else
+        die "neither redmatrix, osada, misty, zap nor hubzilla repository > did not install redmatrix/osada/misty/zap/hubzilla"
+    fi
+}
+
+function install_zotserver {
+    print_info "installing addons..."
+    cd $install_path/
+    if [ $zotserver = "hubzilla" ]
+    then
+        print_info "hubzilla"
+        util/add_addon_repo https://framagit.org/hubzilla/addons hzaddons
+    elif [ $zotserver = "zap" ]
+    then
+        print_info "zap"
+        util/add_addon_repo https://codeberg.org/zot/zap-addons.git zaddons
+    elif [ $zotserver = "misty" ]
+    then
+        print_info "misty"
+        util/add_addon_repo https://codeberg.org/zot/misty-addons.git maddons
+    elif [ $zotserver = "osada" ]
+    then
+        print_info "osada"
+        util/add_addon_repo https://codeberg.org/zot/osada-addons.git oaddons
+    elif [ $zotserver = "redmatrix" ]
+    then
+        print_info "redmatrix"
+        util/add_addon_repo https://codeberg.org/zot/redmatrix-addons.git raddons
+    else
+        die "neither redmatrix, osada, misty, zap nor hubzilla repository > did not install addons or redmatrix/osada/misty/zap/hubzilla"
+    fi
+    mkdir -p "cache/smarty3"
+    mkdir -p "store"
+    chmod -R 777 store
+    touch .htconfig.php
+    chmod ou+w .htconfig.php
+    cd /var/www/
+    chown -R www-data:www-data $install_path
+	chown root:www-data $install_path/
+	chown root:www-data $install_path/.htaccess
+	chmod 0644 $install_path/.htaccess
+    print_info "installed addons"
+}
+
+function install_rsync {
+    print_info "installing rsync..."
+    nocheck_install "rsync"
+}
+
+function install_cryptosetup {
+    print_info "installing cryptsetup..."
+    nocheck_install "cryptsetup"
+}
+
+function configure_zotserverdaily {
+    echo "#!/bin/sh" >> /var/www/$zotserverdaily
+    echo "#" >> /var/www/$zotserverdaily
+    echo "# update of $le_domain Zot hub/instance" >> /var/www/$zotserverdaily
+    echo "echo \"\$(date) - updating core and addons...\"" >> /var/www/$zotserverdaily
+    echo "echo \"reaching git repository for $le_domain $zotserver hub/instance...\"" >> /var/www/$zotserverdaily
+    echo "(cd $install_path ; util/udall)" >> /var/www/$zotserverdaily
+    echo "chown -R www-data:www-data $install_path # make all accessible for the webserver" >> /var/www/$zotserverdaily
+    if [ $webserver = "apache" ]
+    then
+        echo "chown root:www-data $install_path/.htaccess" >> /var/www/$zotserverdaily
+        echo "chmod 0644 $install_path/.htaccess # www-data can read but not write it" >> /var/www/$zotserverdaily
+    fi
+    chmod a+x /var/www/$zotserverdaily
+}
+
+function configure_cron_daily {
+    print_info "configuring cron..."
+    # every 10 min for poller.php
+    if [ -z "`grep '$install_path.*Run.php' /etc/crontab`" ]
+    then
+        echo "*/10 * * * * www-data cd $install_path; php Zotlabs/Daemon/Run.php Cron >> /dev/null 2>&1" >> /etc/crontab
+    fi
+    # Run external script daily at 05:30
+    # - stop apache/nginx and mysql-server
+    # - renew the certificate of letsencrypt
+    # - backup db, files ($install_path), certificates if letsencrypt
+    # - update zotserver core and addon
+    # - update and upgrade linux
+    # - reboot is done by "shutdown -h now" because "reboot" hangs sometimes depending on the system
+    echo "#!/bin/sh" > /var/www/$zotcron
+    echo "#" >> /var/www/$zotcron
+    echo "echo \" \"" >> /var/www/$zotcron
+    echo "echo \"+++ \$(date) +++\"" >> /var/www/$zotcron
+    echo "echo \" \"" >> /var/www/$zotcron
+    echo "echo \"\$(date) - stopping $webserver and mysql...\"" >> /var/www/$zotcron
+    if [ $webserver = "nginx" ]
+    then
+        echo "systemctl stop nginx" >> /var/www/$zotcron
+    elif [ $webserver = "apache" ]
+    then
+        echo "service apache2 stop" >> /var/www/$zotcron
+    fi
+    echo "/etc/init.d/mysql stop # to avoid inconsistencies" >> /var/www/$zotcron
+    echo "#" >> /var/www/$zotcron
+    echo "echo \"\$(date) - renew certificate...\"" >> /var/www/$zotcron
+    echo "certbot renew --noninteractive" >> /var/www/$zotcron
+    echo "#" >> /var/www/$zotcron
+    echo "# backup" >> /var/www/$zotcron
+    echo "echo \"\$(date) - try to mount external device for backup...\"" >> /var/www/$zotcron
+    echo "backup_device_name=$backup_device_name" >> /var/www/$zotcron
+    echo "backup_device_pass=$backup_device_pass" >> /var/www/$zotcron
+    echo "backup_mount_point=$backup_mount_point" >> /var/www/$zotcron
+    echo "device_mounted=0" >> /var/www/$zotcron
+    echo "if [ -n \"\$backup_device_name\" ]" >> /var/www/$zotcron
+    echo "then" >> /var/www/$zotcron
+    echo "    if blkid | grep $backup_device_name" >> /var/www/$zotcron
+    echo "    then" >> /var/www/$zotcron
+    if [ -n "$backup_device_pass" ]
+    then
+        echo "        echo \"decrypting backup device...\"" >> /var/www/$zotcron
+        echo "        echo "\"$backup_device_pass\"" | cryptsetup luksOpen $backup_device_name cryptobackup" >> /var/www/$zotcron
+    fi
+    echo "        if [ ! -d $backup_mount_point ]" >> /var/www/$zotcron
+    echo "        then" >> /var/www/$zotcron
+    echo "            mkdir $backup_mount_point" >> /var/www/$zotcron
+    echo "        fi" >> /var/www/$zotcron
+    echo "        echo \"mounting backup device...\"" >> /var/www/$zotcron
+    if [ -n "$backup_device_pass" ]
+    then
+        echo "        if mount /dev/mapper/cryptobackup $backup_mount_point" >> /var/www/$zotcron
+    else
+        echo "        if mount $backup_device_name $backup_mount_point" >> /var/www/$zotcron
+    fi
+    echo "        then" >> /var/www/$zotcron
+    echo "            device_mounted=1" >> /var/www/$zotcron
+    echo "            echo \"device $backup_device_name is now mounted. Starting backup...\"" >> /var/www/$zotcron
+    echo "            rsync -a --delete /var/lib/mysql/ /media/zotserver_backup/mysql" >> /var/www/$zotcron
+    echo "            rsync -a --delete /var/www/ /media/zotserver_backup/www" >> /var/www/$zotcron
+    echo "            rsync -a --delete /etc/letsencrypt/ /media/zotserver_backup/letsencrypt" >> /var/www/$zotcron
+    echo "            echo \"\$(date) - disk sizes...\"" >> /var/www/$zotcron
+    echo "            df -h" >> /var/www/$zotcron
+    echo "            echo \"\$(date) - db size...\"" >> /var/www/$zotcron
+    echo "            du -h $backup_mount_point | grep mysql/zotserver" >> /var/www/$zotcron
+    echo "            echo \"unmounting backup device...\"" >> /var/www/$zotcron
+    echo "            umount $backup_mount_point" >> /var/www/$zotcron
+    echo "        else" >> /var/www/$zotcron
+    echo "            echo \"failed to mount device $backup_device_name\"" >> /var/www/$zotcron
+    echo "        fi" >> /var/www/$zotcron
+    if [ -n "$backup_device_pass" ]
+    then
+        echo "        echo \"closing decrypted backup device...\"" >> /var/www/$zotcron
+        echo "        cryptsetup luksClose cryptobackup" >> /var/www/$zotcron
+    fi
+    echo "    fi" >> /var/www/$zotcron
+    echo "fi" >> /var/www/$zotcron
+    echo "if [ \$device_mounted == 0 ]" >> /var/www/$zotcron
+    echo "then" >> /var/www/$zotcron
+    echo "    echo \"device could not be mounted $backup_device_name. No backup written.\"" >> /var/www/$zotcron
+    echo "fi" >> /var/www/$zotcron
+    echo "#" >> /var/www/$zotcron
+    echo "echo \"\$(date) - db size...\"" >> /var/www/$zotcron
+    echo "du -h /var/lib/mysql/ | grep mysql/" >> /var/www/$zotcron
+    echo "#" >> /var/www/$zotcron
+    echo "cd /var/www" >> /var/www/$zotcron
+    echo "for f in *-daily.sh; do \"./\${f}\"; done" >> /var/www/$zotcron
+    echo "echo \"\$(date) - updating linux...\"" >> /var/www/$zotcron
+    echo "apt-get -q -y update && apt-get -q -y dist-upgrade && apt-get -q -y autoremove # update linux and upgrade" >> /var/www/$zotcron
+    echo "echo \"\$(date) - Backup and update finished. Rebooting...\"" >> /var/www/$zotcron
+    echo "#" >> /var/www/$zotcron
+    echo "shutdown -r now" >> /var/www/$zotcron
+
+    # If global cron job does not exist we add it to /etc/crontab
+    if grep -q $zotcron /etc/crontab
+    then
+        echo "cron job already in /etc/crontab"
+    else
+        echo "30 05 * * * root /bin/bash /var/www/$zotcron >> /var/www/zot-daily.log 2>&1" >> /etc/crontab
+        echo "0 0 1 * * root rm /var/www/zot-daily.log" >> /etc/crontab
+    fi
+
+    # This is active after either "reboot" or cron reload"
+    systemctl restart cron
+    print_info "configured cron for updates/upgrades"
+}
+
+########################################################################
+# START OF PROGRAM
+########################################################################
+export PATH=/bin:/usr/bin:/sbin:/usr/sbin
+check_sanity
+
+zotserver_name
+print_info "We're installing a $zotserver instance"
+install_path="$(dirname "$(pwd)")"
+install_folder="$(basename $install_path)"
+
+# Read config file edited by user
+configfile=zotserver-config.txt
+source $configfile
+
+selfhostdir=/etc/selfhost
+selfhostscript=selfhost-updater.sh
+zotcron="zotcron.sh"
+zotserverdaily="${install_folder}-${zotserver}-daily.sh"
+backup_mount_point="/media/zotserver_backup"
+
+#set -x    # activate debugging from here
+
+check_config
+stop_zotserver
+update_upgrade
+install_curl
+install_wget
+install_sendmail
+if [ $webserver = "nginx" ]
+then
+    install_nginx
+elif [ $webserver = "apache" ]
+then
+    install_apache
+else
+die "Failed to install a Web server: 'webserver' not set to \"apache\" or \"nginx\" in $configfile" 
+fi
+install_imagemagick
+install_php
+if [ $webserver = "nginx" ]
+then
+    add_nginx_block
+elif [ $webserver = "apache" ]
+then
+    if [ "$install_path" != "/var/www/html" ]
+    then
+        add_vhost
+    fi
+fi
+install_mysql
+if [ $webserver = "apache" ]
+then
+install_adminer
+fi
+create_zotserver_db
+run_freedns
+install_run_selfhost
+ping_domain
+configure_cron_freedns
+configure_cron_selfhost
+
+if [ "$le_domain" != "localhost" ]
+then
+    install_letsencrypt
+    check_https
+else
+    print_info "is localhost - skipped installation of letsencrypt and configuration of apache for https"
+fi
+
+install_zotserver
+
+configure_zotserverdaily
+
+configure_cron_daily
+
+if [ "$le_domain" != "localhost" ]
+then
+    install_cryptosetup
+    install_rsync
+else
+    print_info "is localhost - skipped installation of cryptosetup"
+fi
+
+
+#set +x    # stop debugging from here