From 29154a258e47acfcca836893dabf6c590cfb866a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sa=C3=BAl=20Badillo?= <saul365@localhost.localdomain>
Date: Mon, 30 Oct 2023 22:21:48 -0600
Subject: [PATCH] Add script for freedns dynamic dns

---
 update-ipv6.sh | 75 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)
 create mode 100755 update-ipv6.sh

diff --git a/update-ipv6.sh b/update-ipv6.sh
new file mode 100755
index 0000000..5261fa5
--- /dev/null
+++ b/update-ipv6.sh
@@ -0,0 +1,75 @@
+#! /bin/bash
+
+PASSWORD=""
+DOMAIN=""
+
+usage(){
+cat << EOF
+usage: update-ipv6 [OPTIONS] -p [PASSWORD] -d [DOMAIN_NAME]
+Dynamic DNS script helper that updates records in freedns.afraid.org if the IPV6 address has been changed.
+	
+Options:
+  -f	Force update in record even if IP hasn't change
+  --dry	Shows if the IP addres has changed without updating it 
+
+EOF
+exit 1
+  
+}
+
+if [[ $# -lt 4 ]] ; 
+then
+  usage
+fi
+
+for option in $@; do
+	case $option in
+		-p) 
+			PASSWORD=$2
+			shift 2;;
+		-d) 
+			DOMAIN=$2
+			shift 2;;
+	 	-f)	
+			FORCE=true;;
+		--dry)	
+			DRY=true;;
+		*)
+			usage;;
+	esac
+done
+
+echo pass $PASSWORD domain $DOMAIN force $FORCE dry $DRY
+exit 0
+
+echo $address
+if [[ $DRY ]]; then
+	exit 1;
+fi
+
+addresses=$(/usr/sbin/ifconfig eth0 | grep 'inet6.*global>' | awk  '{ print $2 }'); 
+GREAT=0
+add=""
+for address in $addresses; 
+do 
+	secs=$(/usr/sbin/ip addr show dev eth0 | grep -A1 $address | grep -v $address | awk '{ print $2}')
+	if [ $GREAT -gt ${secs/sec/} ] || [ $GREAT == 0 ];
+	then
+		GREAT=${secs/sec/}
+		add=$address
+	fi
+
+done
+	if [[ $add ]] && [[ -z $(grep $add /etc/haproxy/haproxy.cfg ) ]] ; then
+                hadd=$(cat /etc/haproxy/haproxy.cfg | grep -m 1 'bind.*ssl' | awk  '{ print $2 }');
+                sed -i s/${hadd::-4}/$add/ /etc/haproxy/haproxy.cfg
+		date
+		echo curl --user "nextia365:$PASSWORD" -XPOST http://freedns.afraid.org/nic/update?hostname=$DOMAIN\&myip=$add
+		curl --user "nextia365:$PASSWORD" -XPOST http://freedns.afraid.org/nic/update?hostname=$DOMAIN\&myip=$add
+		systemctl restart haproxy
+	else
+		echo Unchanged
+		if [[ $FORCE ]]; then
+			curl --user "nextia365:$PASSWORD" -XPOST http://freedns.afraid.org/nic/update?hostname=$DOMAIN\&myip=$add
+		fi
+	fi