From 6ac13e48a5e43bb59b57ec67a22c3a1c831949c1 Mon Sep 17 00:00:00 2001
From: rootzoll <christian@geektank.de>
Date: Thu, 13 Dec 2018 21:59:58 +0100
Subject: [PATCH] added dynamic domain update

---
 home.admin/_background.sh | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/home.admin/_background.sh b/home.admin/_background.sh
index dabd2331c..8dd682308 100644
--- a/home.admin/_background.sh
+++ b/home.admin/_background.sh
@@ -60,6 +60,7 @@ do
   # every 15min - not too often
   # because its a ping to external service
   recheckPublicIP=$((($counter % 900)+1))
+  updateDynDomain=0
   if [ ${recheckPublicIP} -eq 1 ]; then
     echo "*** RECHECK PUBLIC IP ***"
 
@@ -83,6 +84,9 @@ do
         echo "restart LND with new environment config"
         sudo systemctl restart lnd.service
 
+        # 3) trigger update if dnyamic domain (if set)
+        updateDynDomain=1
+
       else
         echo "public IP has not changed"
       fi
@@ -93,6 +97,29 @@ do
 
   fi
 
+  ###############################
+  # UPDATE DYNAMIC DOMAIN
+  # like afraid.org
+  ###############################
+
+  # if not activated above, update every hour
+  if [ ${updateDynDomain} -eq 0 ];
+    # dont +1 so that it gets executed on first loop
+    updateDynDomain=$(($counter % 3600))
+  fi
+  if [ ${updateDynDomain} -eq 1 ]; then
+    echo "*** UPDATE DYNAMIC DOMAIN ***"
+    # check if update URL for dyn Domain is set
+    if [ ${#dynUpdateUrl} -gt 0 ]; then
+      # calling the update url
+      echo "calling: ${dynUpdateUrl}"
+      echo "to update domain: ${dynDomain}"
+      curl --connect-timeout 6 ${dynUpdateUrl}
+    else
+      echo "'dynUpdateUrl' not set in ${configFile}"
+    fi
+  fi
+
   ###############################
   # Prepare next loop
   ###############################