Add FreeDNS client installation for Raspbian

etc/nextcloudpi-config.d/freeDNS.sh

@@ -0,0 +1,118 @@
+#!/bin/bash
+
+# FreeDNS updater client installation on Raspbian 
+#
+# Copyleft 2017 by Panteleimon Sarantos <pantelis.fedora _a_t_ gmail _d_o_t_ com>
+# GPL licensed (see end of file) * Use at your own risk!
+#
+# Usage:
+# 
+#   ./installer.sh freedns.sh 
+#
+# See installer.sh instructions for details
+#
+#
+#
+
+ACTIVE_=yes
+UPDATEURL_=https://freedns.afraid.org/dynamic/update.php
+UPDATEHASH_=abcdefghijklmnopqrstuvwxyzABCDEFGHIJK1234567
+DOMAIN_=nextcloud.example.com
+UPDATEINTERVAL_=30
+DESCRIPTION="DDNS FreeDNS client (need account)"
+URL="${UPDATEURL_}?${UPDATEHASH_}"
+
+show_info()
+{
+  whiptail --yesno \
+           --backtitle "NextCloudPi configuration" \
+           --title --title "Instructions for FreeDNS client 
+Set the time in seconds in UPDATEINTERVAL. 
+>>> Long interval may lead to not updating your IP address for long time. <<<" \
+  20 90
+}
+
+install()
+{
+apt-get install --no-install-recommends -y dnsutils
+  cat > /usr/local/bin/freedns.sh <<EOF
+#!/bin/bash
+echo "FreeDNS client started"
+echo "${URL}"
+registeredIP=$(nslookup ${DOMAIN_}|tail -n2|grep A|sed s/[^0-9.]//g)
+currentIP=$(wget -q -O - http://checkip.dyndns.org|sed s/[^0-9.]//g)
+    [ "\$currentIP" != "\$registeredIP" ] && {
+        wget -q -O /dev/null ${URL}
+  }
+echo "Registered IP: \$registeredIP | Current IP: \$currentIP"
+
+EOF
+
+  chmod +744 /usr/local/bin/freedns.sh
+
+  cat > /etc/systemd/system/freedns.service <<EOF
+[Unit]
+Description=FreeDNS client
+
+[Service]g
+Type=simple
+ExecStart=/bin/bash /usr/local/bin/freedns.sh
+
+[Install]
+WantedBy=default.target
+EOF
+}
+
+configure() 
+{
+
+  cat > /etc/systemd/system/freedns.timer <<EOF
+[Unit] 
+Description=Timer to run FreeDNS client per interval 
+
+[Timer] 
+OnBootSec=${UPDATEINTERVAL_}
+OnUnitActiveSec=${UPDATEINTERVAL_}
+Unit=freedns.service 
+
+[Install] 
+WantedBy=timers.target
+EOF
+    systemctl daemon-reload
+
+    [[ $ACTIVE_ != "yes" ]] && { 
+    systemctl stop    freedns.timer
+    systemctl disable freedns.timer
+    systemctl daemon-reload
+    echo "FreeDNS client is disabled"
+    return 0
+  }
+  systemctl daemon-reload
+  systemctl enable freedns.timer
+  systemctl start  freedns.timer
+  echo "FreeDNS client is enabled"
+  
+  cd /var/www/nextcloud
+  sudo -u www-data php occ config:system:set trusted_domains 3 --value="$DOMAIN_"
+  sudo -u www-data php occ config:system:set overwrite.cli.url --value=https://"$DOMAIN_"
+  
+
+}
+
+  cleanup() { :; }
+# License
+#
+# This script 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 2 of the License, or
+# (at your option) any later version.
+#
+# This script 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 script; if not, write to the
+# Free Software Foundation, Inc., 59 Temple Place, Suite 330,
+# Boston, MA  02111-1307  USA