Added script for re6snet

templates/re6stnet.sh

+SLAPOS_CFG_PATH=/etc/opt/slapos/slapos.cfg
+
+function re6st_conf_generation{
+    # Generate re6st configuration
+    read -p "Please enter the registry you wish to use for re6st[http://re6stnet.nexedi.com]: " REGISTRY
+    REGISTRY=${REGISTRY:-http://re6stnet.nexedi.com}
+    read -p "Please enter your email for token generation: " EMAIL
+    re6st-conf --registry $REGISTRY --email $EMAIL -r emailAddress $EMAIL -d /etc/re6stnet
+	  echo "File /etc/re6stnet/re6stnet.conf generated"
+    echo "You now need to reboot your server manually for the changes to take\
+effect"
+}
+
+function remove_VPN_conf{
+    # Remove VPN configuration
+    if [ -e /etc/openvpn/vifib.conf ]; then
+        rm /etc/openvpn/vifib.conf
+        rm -Rf /etc/openvpn/vifib-keys
+	      echo "Removed vifib OpenVPN configuration files"
+    fi
+    
+    if [ -e /etc/opt/slapos/openvpn-needed ]; then
+        rm /etc/opt/slapos/openvpn-needed
+	      echo "Removed /etc/opt/slapos/openvpn-needed"
+    fi
+}
+
+function modify_interfaces_in_SlapOS_conf{
+    # Modify slapos.cfg to use lo
+    cp $SLAPOS_CFG_PATH $SLAPOS_CFG_PATH.old
+    echo "Copied old slapos.cfg to $SLAPOS_CFG_PATH.old"
+    
+    sed 's/\(interface_name =\).*/\1 lo/g' $SLAPOS_CFG_PATH.old > $SLAPOS_CFG_PATH.tmp
+    sed 's/.*ipv6_interface =.*//g' $SLAPOS_CFG_PATH.tmp > $SLAPOS_CFG_PATH
+    rm $SLAPOS_CFG_PATH.tmp
+}
+
+#XXX Vivien: fugly logic, feel free to modify it if you can do better
+#            or if install/upgrade procedure was simplified
+if [ -e $SLAPOS_CFG_PATH ]; then
+    # In case of an upgrade test for native ipv6 inside slapos.cfg
+    if grep -qe "ipv6_interface" $SLAPOS_CFG_PATH && ! grep -qe "#ipv6_interface" $SLAPOS_CFG_PATH; then
+        # If using vifib VPN        
+        remove_VPN_conf
+       
+        modify_interfaces_in_SlapOS_conf
+       
+        re6st_conf_generation
+
+    elif [ ! -e /etc/re6stnet/re6stnet.conf ]; then
+        if grep -qe "interface_name = lo" $SLAPOS_CFG_PATH; then
+            # New node with new configuration case
+            re6st_conf_generation
+        
+        else
+            # Manual configuration by user before upgrade
+            echo "You seem to have no separate interface for ipv6, please proceed \
+with the configuration of re6st and SlapOS Node by yourself."
+    fi
+fi
+