Merge pull request #14 from redmatrix/master

updating from original codebase

1 files changed, 788 insertions, 0 deletions

diff --git a/.homeinstall/hubzilla-setup.sh b/.homeinstall/hubzilla-setup.sh
new file mode 100755
index 000000000..5e8cd69c8
--- /dev/null
+++ b/.homeinstall/hubzilla-setup.sh
@@ -0,0 +1,788 @@
+#!/bin/bash
+#
+# How to use
+# ----------
+# 
+# This file automates the installation of hubzilla under Debian Linux
+#
+# 1) Edit the file "hubzilla-config.txt"
+#       Follow the instuctions there
+# 
+# 2) Switch to user "root" by typing "su -"
+# 
+# 3) Run with "./hubzilla-setup.sh"
+#       If this fails check if you can execute the script.
+#       - To make it executable type "chmod +x hubzilla-setup.sh"
+#       - or run "bash hubzilla-setup.sh"
+# 
+# 
+# What does this script do basically?
+# -----------------------------------
+# 
+# This file automates the installation of hubzilla under Debian Linux
+# - install
+#        * apache webserer, 
+#        * php,  
+#        * mysql - the database for hubzilla,  
+#        * phpmyadmin,  
+#        * git to download and update hubzilla itself
+# - download hubzilla core and addons
+# - configure cron
+#        * "poller.php" for regular background prozesses of hubzilla
+#        * to_do "apt-get update" and "apt-get dist-upgrade" to keep linux
+#          up-to-date
+#        * to_do backup hubzillas database and files (rsnapshot)
+# - configure dynamic ip with cron
+# - to_do letsencrypt
+# - to_do redirection to https
+# 
+# 
+# Discussion
+# ----------
+# 
+# Security - password  is the same for mysql-server, phpmyadmin and hubzilla db
+# - The script runs into installation errors for phpmyadmin if it uses
+#   different passwords. For the sake of simplicity one singel password.
+# 
+# Security - suhosin for PHP
+# - The script does not install suhosin.
+# - Is the security package suhosin usefull or not usefull?
+#
+# Hubzilla - email verification
+# - The script switches off email verification off in all htconfig.tpl.
+#   Example: /var/www/html/view/en/htconfig.tpl
+# - Is this a silly idea or not?
+#
+# 
+# Remove Hubzilla (for a fresh start using the script)
+# ----------------------------------------------------
+#
+# You could use /var/www/hubzilla-remove.sh
+# that is created by hubzilla-setup.sh.
+#
+# The script will remove (almost everything) what was installed by the script.
+# After the removal you could run the script again to have a fresh install
+# of all applications including hubzilla and its database.
+# 
+# How to restore from backup
+# --------------------------
+#
+# Daily backup
+# - - - - - - 
+# 
+# The installation
+# - writes a script /var/www/hubzilla-daily.sh
+# - creates a daily cron that runs the hubzilla-daily.sh
+#
+# hubzilla-daily.sh makes a (daily) backup of all relevant files
+# - /var/lib/mysql/ > hubzilla database
+# - /var/www/html/ > hubzilla from github
+# - /var/www/letsencrypt/ > certificates
+# 
+# hubzilla-daily.sh writes the backup
+# - either to an external disk compatible to LUKS+ext4 (see hubzilla-config.txt)
+# - or to /var/cache/rsnapshot in case the external disk is not plugged in
+# 
+# Restore backup
+# - - - - - - - 
+# 
+# This was not tested yet.
+# Bacically you can copy the files from the backup to the server.
+# 
+# Credits
+# -------
+#
+# The srcipt is based on Thomas Willinghams script "debian-setup.sh"
+# which he used to install the red#matrix.
+#
+# The script uses another script from https://github.com/lukas2511/letsencrypt.sh
+#
+# The documentation of 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 "Ubuntu is not supported"
+    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 $1
+    echo -e '\e[0m'
+}
+
+function install_apache {
+    print_info "installing apache..."
+    nocheck_install "apache2 apache2-utils"
+}
+
+function install_php {
+    # openssl and mbstring are included in libapache2-mod-php5
+    # to_to:  php5-suhosin
+    print_info "installing php..."
+    nocheck_install "libapache2-mod-php5 php5 php-pear php5-xcache php5-curl php5-mcrypt php5-gd"
+    php5enmod mcrypt
+}
+
+function install_mysql {
+    # http://www.microhowto.info/howto/perform_an_unattended_installation_of_a_debian_package.html
+    # 
+    # To determine the required package name, key and type you can perform
+    # a trial installation then search the configuration database.
+    # 
+    #     debconf-get-selections | grep mysql-server
+    #
+    # The command debconf-get-selections is provided by the package
+    # debconf-utils, which you may need to install.
+    #
+    #    apt-get install debconf-utils
+    #
+    # If you want to supply an answer to a configuration question but do not 
+    # want to be prompted for it then this can be arranged by preseeding the
+    # DebConf database with the required information.
+    #
+    #     echo mysql-server-5.5 mysql-server/root_password password xyzzy | debconf-set-selections
+    #     echo mysql-server-5.5 mysql-server/root_password_again password xyzzy | debconf-set-selections
+    #
+    print_info "installing mysql..."
+    if [ -z "$mysqlpass" ]
+    then
+        die "mysqlpass not set in $configfile"
+    fi
+    echo mysql-server-5.5 mysql-server/root_password password $mysqlpass | debconf-set-selections
+    echo mysql-server-5.5 mysql-server/root_password_again password $mysqlpass | debconf-set-selections
+    nocheck_install "php5-mysql mysql-server mysql-client"
+    php5enmod mcrypt
+}
+
+function install_phpmyadmin {
+    print_info "installing phpmyadmin..."
+    if [ -z "$phpmyadminpass" ]
+    then
+        die "phpmyadminpass not set in $configfile"
+    fi
+    echo phpmyadmin    phpmyadmin/setup-password password $phpmyadminpass | debconf-set-selections
+    echo phpmyadmin    phpmyadmin/mysql/app-pass password $phpmyadminpass | debconf-set-selections
+    echo phpmyadmin    phpmyadmin/app-password-confirm password $phpmyadminpass | debconf-set-selections
+    echo phpmyadmin    phpmyadmin/mysql/admin-pass    password $phpmyadminpass | debconf-set-selections
+    echo phpmyadmin    phpmyadmin/password-confirm    password $phpmyadminpass | debconf-set-selections
+    echo phpmyadmin    phpmyadmin/reconfigure-webserver multiselect apache2 | debconf-set-selections
+    nocheck_install "phpmyadmin"
+
+    # It seems to be not neccessary to check rewrite.load because it comes
+    # with the installation. To be sure you could check this manually by:
+    #
+    #    nano /etc/apache2/mods-available/rewrite.load
+    #
+    # You should find the content:
+    #
+    #    LoadModule rewrite_module /usr/lib/apache2/modules/mod_rewrite.so
+
+    a2enmod rewrite
+    if [ ! -f /etc/apache2/apache2.conf ]
+    then
+        die "could not find file /etc/apache2/apache2.conf"
+    fi
+    sed -i \
+        "s/AllowOverride None/AllowOverride all/" \
+        /etc/apache2/apache2.conf
+    if [ -z "`grep 'Include /etc/phpmyadmin/apache.conf' /etc/apache2/apache2.conf`" ]
+    then
+        echo "Include /etc/phpmyadmin/apache.conf" >> /etc/apache2/apache2.conf
+    fi
+    service apache2 restart
+}
+
+function create_hubzilla_db {
+    print_info "creating hubzilla database..." 
+    if [ -z "$hubzilla_db_name" ]
+    then
+        die "hubzilla_db_name not set in $configfile"
+    fi     
+    if [ -z "$hubzilla_db_user" ]
+    then
+        die "hubzilla_db_user not set in $configfile"
+    fi     
+    if [ -z "$hubzilla_db_pass" ]
+    then
+        die "hubzilla_db_pass not set in $configfile"
+    fi
+    Q1="CREATE DATABASE IF NOT EXISTS $hubzilla_db_name;"
+    Q2="GRANT USAGE ON *.* TO $hubzilla_db_user@localhost IDENTIFIED BY '$hubzilla_db_pass';"
+    Q3="GRANT ALL PRIVILEGES ON $hubzilla_db_name.* to $hubzilla_db_user@localhost identified by '$hubzilla_db_pass';"
+    Q4="FLUSH PRIVILEGES;"
+    SQL="${Q1}${Q2}${Q3}${Q4}"     
+    mysql -uroot -p$phpmyadminpass -e "$SQL"
+}
+
+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 $configfile)"
+        fi
+        wget --no-check-certificate -O - https://freedns.afraid.org/dynamic/update.php?$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 $configfile"
+    else
+        # Use cron for dynamich ip update
+        #   - at reboot
+        #   - every 30 minutes
+        if [ -z "`grep 'freedns.afraid.org' /etc/crontab`" ]
+        then
+            echo "@reboot root https://freedns.afraid.org/dynamic/update.php?$freedns_key > /dev/null 2>&1" >> /etc/crontab
+            echo "*/30 * * * * root wget --no-check-certificate -O - https://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 "freedns is not configured because freedns_key is empty in $configfile"
+    else
+        # Use cron for dynamich ip update
+        #   - at reboot
+        #   - every 30 minutes
+        if [ -z "`grep 'selfhost-updater.sh' /etc/crontab`" ]
+        then
+            echo "@reboot root bash /etc/selfhost/selfhost-updater.sh update > /dev/null 2>&1" >> /etc/crontab
+            echo "*/5 * * * * root /bin/bash /etc/selfhost/selfhost-updater.sh update > /dev/null 2>&1" >> /etc/crontab
+        else
+            print_info "cron for selfhost was configured already"
+        fi        
+    fi
+}
+
+function install_git {
+    print_info "installing git..."
+    nocheck_install "git"
+}
+
+function install_letsencrypt {
+    print_info "installing let's encrypt ..."
+    # check if user gave domain
+    if [ -z "$le_domain" ]
+    then
+        die "Failed to install let's encrypt: 'le_domain' is empty in $configfile"
+    fi
+    # configure apache
+    apache_le_conf=/etc/apache2/sites-available/le-default.conf    
+    if [ -f $apache_le_conf ]
+    then
+        print_info "$apache_le_conf exist already"
+    else
+        cat > $apache_le_conf <<END
+# letsencrypt default Apache configuration
+Alias /.well-known/acme-challenge /var/www/letsencrypt
+
+<Directory /var/www/letsencrypt>
+    Options FollowSymLinks
+	Allow from all
+</Directory>
+END
+        a2ensite le-default.conf
+        service apache2 restart
+    fi
+    # download the shell script
+    if [ -d $le_dir ]
+    then
+        print_info "letsenrypt exists already (nothing downloaded > no certificate created and registered)"
+        return 0
+    fi
+    git clone https://github.com/lukas2511/letsencrypt.sh $le_dir
+    cd $le_dir
+    # create config file for letsencrypt.sh
+    echo "WELLKNOWN=$le_dir" > $le_dir/config.sh
+    if [ -n "$le_email" ]
+    then
+        echo "CONTACT_EMAIL=$le_email" >> $le_dir/config.sh
+    fi
+    # create domain file for letsencrypt.sh
+    # WATCH THIS:
+    #    - It did not work wit "sub.domain.org www.sub.domain.org".
+    #    - So just use "sub.domain.org" only!
+    echo "$le_domain" > $le_dir/domains.txt
+    # test apache config for letsencrpyt
+    url_http=http://$le_domain/.well-known/acme-challenge/domains.txt
+    wget_output=$(wget -nv --spider --max-redirect 0 $url_http)
+    if [ $? -ne 0 ]
+    then
+        die "Failed to load $url_http"
+    fi
+    # run letsencrypt.sh
+    # 
+    ./letsencrypt.sh --cron
+}
+
+function configure_apache_for_https {
+    print_info "configuring apache to use httpS ..."
+    # letsencrypt.sh
+    #
+    #   "${BASEDIR}/certs/${domain}/privkey.pem"
+    #   "${BASEDIR}/certs/${domain}/cert.pem"
+    #   "${BASEDIR}/certs/${domain}/fullchain.pem"
+    #
+    SSLCertificateFile=${le_dir}/certs/${le_domain}/cert.pem
+    SSLCertificateKeyFile=${le_dir}/certs/${le_domain}/privkey.pem
+    SSLCertificateChainFile=${le_dir}/certs/${le_domain}/fullchain.pem
+    if [ ! -f $SSLCertificateFile ]
+    then
+        print_warn "Failed to configure apache for httpS: Missing certificate file $SSLCertificateFile" 
+        return 0  
+    fi
+    # make sure that the ssl mode is enabled
+    print_info "...configuring apache to use httpS - a2enmod ssl ..."
+    a2enmod ssl
+    # modify apach' ssl conf file 
+    if grep -i "ServerName" $sslconf
+    then
+        print_info "seems that apache was already configered to use httpS with $sslconf"
+    else
+        sed -i "s/ServerAdmin.*$/ServerAdmin webmaster@localhost\\n        ServerName ${le_domain}/" $sslconf 
+    fi     
+    sed -i s#/etc/ssl/certs/ssl-cert-snakeoil.pem#$SSLCertificateFile# $sslconf 
+    sed -i s#/etc/ssl/private/ssl-cert-snakeoil.key#$SSLCertificateKeyFile# $sslconf 
+    sed -i s#/etc/apache2/ssl.crt/server-ca.crt#$SSLCertificateChainFile# $sslconf 
+    sed -i s/#SSLCertificateChainFile/SSLCertificateChainFile/ $sslconf 
+    # apply changes
+    a2ensite default-ssl.conf
+    service apache2 restart
+}
+
+function check_https {
+    print_info "checking httpS > testing ..."
+    url_https=https://$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 install_hubzilla {
+    print_info "installing hubzilla..."
+    # rm -R /var/www/html/ # for "stand alone" usage
+    cd /var/www/
+    # git clone https://github.com/redmatrix/hubzilla html # for "stand alone" usage
+    cd html/
+    git clone https://github.com/redmatrix/hubzilla-addons addon
+    mkdir -p "store/[data]/smarty3"
+    chmod -R 777 store
+    touch .htconfig.php
+    chmod ou+w .htconfig.php
+    cd ..
+    chown -R www-data:www-data html
+	chown root:www-data /var/www/html/
+	chown root:www-data /var/www/html/.htaccess
+	chmod 0644 /var/www/html/.htaccess
+    # try to switch off email registration
+    sed -i "s/verify_email.*1/verify_email'] = 0/" /var/www/html/view/*/ht*
+    if [ -n "`grep -r 'verify_email.*1' /var/www/html/view/`" ]
+    then
+        print_warn "Hubzillas registration prozess might have email verification switched on."
+    fi
+    print_info "installed hubzilla"
+}
+
+function rewrite_to_https {
+    print_info "configuring apache to redirect http to httpS ..."
+    htaccessfile=/var/www/html/.htaccess
+    if grep -i "https" $htaccessfile
+    then
+        print_info "...configuring apache to redirect http to httpS was already done in $htaccessfile"
+    else
+        sed -i "s#QSA]#QSA]\\n  RewriteCond %{SERVER_PORT} !^443$\\n  RewriteRule (.*) https://%{HTTP_HOST}/$1 [R=301,L]#" $htaccessfile 
+    fi     
+    service apache2 restart
+}
+
+
+function install_owncloud {
+    if [ -z "$owncloud" ]
+    then
+    	print_info "Do not install owncloud"
+        return 0
+    fi  
+    if [ -f /etc/apt/sources.list.d/owncloud.list ]
+    then
+        print_info "owncloud is already installed and is left untouched"
+        return 0
+    fi
+    print_info "installing owncloud..."
+    # add the repository key to apt
+    wget -nv https://download.owncloud.org/download/repositories/stable/Debian_8.0/Release.key -O Release.key
+    apt-key add - < Release.key
+    # add the repository and install from there
+    sh -c "echo 'deb http://download.owncloud.org/download/repositories/stable/Debian_8.0/ /' >> /etc/apt/sources.list.d/owncloud.list"
+    apt-get update
+    nocheck_install "owncloud"
+    chown -R www-data:www-data /var/www/owncloud/
+	# set strong permissions
+    ocpath='/var/www/owncloud'
+    htuser='www-data'
+    htgroup='www-data'
+    rootuser='root' # On QNAP this is admin
+    find ${ocpath}/ -type f -print0 | xargs -0 chmod 0640
+    find ${ocpath}/ -type d -print0 | xargs -0 chmod 0750
+    chown -R ${rootuser}:${htgroup} ${ocpath}/
+    chown -R ${htuser}:${htgroup} ${ocpath}/apps/
+    chown -R ${htuser}:${htgroup} ${ocpath}/config/
+    chown -R ${htuser}:${htgroup} ${ocpath}/data/
+    chown -R ${htuser}:${htgroup} ${ocpath}/themes/
+    chown ${rootuser}:${htgroup} ${ocpath}/.htaccess
+    chown ${rootuser}:${htgroup} ${ocpath}/data/.htaccess
+    chmod 0644 ${ocpath}/.htaccess
+    chmod 0644 ${ocpath}/data/.htaccess
+}
+
+# This will allways overwrite both config files
+#   - internal disk
+#   - external disk (LUKS + ext4)
+#  of rsnapshot for hubzilla
+function install_rsnapshot {
+    print_info "installing rsnapshot..."
+    nocheck_install "rsnapshot"
+	# internal disk
+    cp -f /etc/rsnapshot.conf $snapshotconfig   
+    sed -i "/hourly/s/retain/#retain/" $snapshotconfig 
+    sed -i "/monthly/s/#retain/retain/" $snapshotconfig 
+    sed -i "s/^cmd_cp/#cmd_cp/" $snapshotconfig
+    sed -i "s/^backup/#backup/" $snapshotconfig
+    if [ -z "`grep 'letsencrypt' $snapshotconfig`" ]
+    then
+		echo "backup	/var/lib/mysql/	localhost/" >> $snapshotconfig
+		echo "backup	/var/www/html/	localhost/" >> $snapshotconfig
+		echo "backup	/var/www/letsencrypt/	localhost/" >> $snapshotconfig
+    fi
+	# external disk
+	if [ -n "$backup_device_name" ] && [ -n "$backup_device_pass" ]
+	then
+		cp -f /etc/rsnapshot.conf $snapshotconfig_external_device   
+		sed -i "s#snapshot_root.*#snapshot_root	$backup_mount_point#" $snapshotconfig_external_device
+		sed -i "/hourly/s/retain/#retain/" $snapshotconfig_external_device 
+		sed -i "/monthly/s/#retain/retain/" $snapshotconfig_external_device 
+		sed -i "s/^cmd_cp/#cmd_cp/" $snapshotconfig_external_device
+		sed -i "s/^backup/#backup/" $snapshotconfig_external_device
+		if [ -z "`grep 'letsencrypt' $snapshotconfig_external_device`" ]
+		then
+			echo "backup	/var/lib/mysql/	localhost/" >> $snapshotconfig_external_device
+			echo "backup	/var/www/html/	localhost/" >> $snapshotconfig_external_device
+			echo "backup	/var/www/letsencrypt/	localhost/" >> $snapshotconfig_external_device
+		fi
+    else
+        print_info "No backup configuration (rsnapshot) for external device configured. Reason: backup_device_name and/or backup_device_pass not given in $configfile"
+	fi
+}
+
+function install_cryptosetup {
+    print_info "installing cryptsetup..."
+    nocheck_install "cryptsetup"
+}
+
+function configure_cron_daily {
+    print_info "configuring cron..."
+    # every 10 min for poller.php
+    if [ -z "`grep 'poller.php' /etc/crontab`" ]
+    then
+        echo "*/10 * * * * www-data cd /var/www/html; php include/poller.php >> /dev/null 2>&1" >> /etc/crontab
+    fi
+    # Run external script daily at 05:30
+    # - stop apache and mysql-server
+    # - backup hubzilla
+    # - update hubzilla core and addon
+    # - update and upgrade linux
+    # - reboot
+    cat > /var/www/$hubzilladaily <<END
+#!/bin/sh
+#
+echo " "
+echo "+++ \$(date) +++"
+echo " "
+# renew certificat if over 30 days old
+echo "\$(date) - renew certificat if 30 days old..."
+bash /var/www/letsencrypt/letsencrypt.sh --cron
+#
+# stop hubzilla
+echo "\$(date) - stoping apaache and mysql..."
+service apache2 stop
+/etc/init.d/mysql stop # to avoid inconsistancies
+#
+# backup
+echo "\$(date) - try to mount external device for backup..."
+backup_device_name=$backup_device_name
+backup_device_pass=$backup_device_pass
+backup_mount_point=$backup_mount_point
+device_mounted=0
+if [ -n "$backup_device_name" ] && [ -n "$backup_device_pass" ]
+then
+    if blkid | grep $backup_device_name
+    then
+        echo "decrypting backup device..."
+        echo "$backup_device_pass" | cryptsetup luksOpen $backup_device_name cryptobackup
+        if [ ! -d $backup_mount_point ]
+        then
+            mkdir $backup_mount_point
+        fi
+        echo "mounting backup device..."
+        if mount /dev/mapper/cryptobackup $backup_mount_point
+        then
+            device_mounted=1
+            echo "device $backup_device_name is now mounted. Starting backup..."
+			rsnapshot -c $snapshotconfig_external_device daily
+			rsnapshot -c $snapshotconfig_external_device weekly
+			rsnapshot -c $snapshotconfig_external_device monthly
+			echo "\$(date) - disk sizes..."
+			df -h
+			echo "\$(date) - db size..."
+			du -h $backup_mount_point | grep mysql/hubzilla
+            echo "unmounting backup device..."
+            umount $backup_mount_point
+        else
+            echo "failed to mount device $backup_device_name"
+        fi
+        echo "closing decrypted backup device..."
+        cryptsetup luksClose cryptobackup
+    fi
+fi
+if [ \$device_mounted == 0 ]
+then
+    echo "device could not be mounted $backup_device_name. Using internal disk for backup..."
+	rsnapshot -c $snapshotconfig daily
+	rsnapshot -c $snapshotconfig weekly
+	rsnapshot -c $snapshotconfig monthly
+fi
+#
+echo "\$(date) - db size..."
+du -h /var/cache/rsnapshot/ | grep mysql/hubzilla
+#
+# update
+echo "\$(date) - updating letsencrypt.sh..."
+git -C /var/www/letsencrypt/ pull
+echo "\$(date) - updating hubhilla core..."
+git -C /var/www/html/ pull
+echo "\$(date) - updating hubhilla addons..."
+git -C /var/www/html/addon/ pull
+chown -R www-data:www-data /var/www/html/ # make all accessable for the webserver
+chown root:www-data /var/www/html/.htaccess
+chmod 0644 /var/www/html/.htaccess # www-data can read but not write it
+echo "\$(date) - updating linux..."
+apt-get -q -y update && apt-get -q -y dist-upgrade # update linux and upgrade
+echo "\$(date) - Backup hubzilla and update linux finished. Rebooting..."
+#
+reboot
+END
+    if [ -z "`grep 'hubzilla-daily.sh' /etc/crontab`" ]
+    then
+        echo "30 05 * * * root /bin/bash /var/www/$hubzilladaily >> /var/www/html/hubzilla-daily.log 2>&1" >> /etc/crontab
+        echo "0 0 1 * * root rm /var/www/html/hubzilla-daily.log" >> /etc/crontab
+    fi
+
+    # This is active after either "reboot" or "/etc/init.d/cron reload"
+    print_info "configured cron for updates/upgrades"
+}
+
+function write_uninstall_script {
+    print_info "writing uninstall script..."
+
+    cat > /var/www/hubzilla-remove.sh <<END
+#!/bin/sh
+#
+# This script removes Hubzilla.
+# You might do this for a fresh start using the script.
+# The script will remove (almost everything) what was installed by the script,
+# all applications including hubzilla and its database.
+#
+# Backup the certificates of letsencrypt (you never know)
+cp -a /var/www/letsencrypt/ ~/backup_le_certificats
+#
+# Removal
+apt-get remove apache2 apache2-utils libapache2-mod-php5 php5 php-pear php5-xcache php5-curl php5-mcrypt php5-gd php5-mysql mysql-server mysql-client phpmyadmin
+apt-get purge apache2 apache2-utils libapache2-mod-php5 php5 php-pear php5-xcache php5-curl php5-mcrypt php5-gd php5-mysql mysql-server mysql-client phpmyadmin
+apt-get autoremove
+apt-get clean
+rm /etc/rsnapshot_hubzilla.conf
+rm /etc/rsnapshot_hubzilla_external_device.conf
+rm -R /etc/apache2/
+rm -R /var/lib/mysql/
+rm -R /var/www
+rm -R /etc/selfhost/
+# uncomment the next line if you want to remove the backups
+# rm -R /var/cache/rsnapshot
+nano /etc/crontab # remove entries there manually
+END
+    chmod -x /var/www/hubzilla-remove.sh
+}
+
+########################################################################
+# START OF PROGRAM 
+########################################################################
+export PATH=/bin:/usr/bin:/sbin:/usr/sbin
+
+check_sanity
+
+# Read config file edited by user
+configfile=hubzilla-config.txt
+source $configfile
+selfhostdir=/etc/selfhost
+selfhostscript=selfhost-updater.sh
+hubzilladaily=hubzilla-daily.sh
+snapshotconfig=/etc/rsnapshot_hubzilla.conf
+snapshotconfig_external_device=/etc/rsnapshot_hubzilla_external_device.conf
+backup_mount_point=/media/hubzilla_backup
+le_dir=/var/www/letsencrypt
+sslconf=/etc/apache2/sites-available/default-ssl.conf
+
+#set -x    # activate debugging from here
+
+update_upgrade
+install_apache
+install_php
+install_mysql
+install_phpmyadmin
+create_hubzilla_db
+run_freedns
+install_run_selfhost
+ping_domain
+configure_cron_freedns
+configure_cron_selfhost
+install_git
+install_letsencrypt
+configure_apache_for_https
+check_https
+install_hubzilla
+rewrite_to_https
+# install_owncloud # deprecated
+install_rsnapshot
+configure_cron_daily
+install_cryptosetup
+write_uninstall_script
+
+#set +x    # stop debugging from here
+