Dynamic DNS support shell script for freenom.com

check

#!/bin/bash
GET_IP_URL="https://api.ipify.org/"
UPDATE_SCRIPT=$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd )/update
LOGGER_SCRIPT=$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd )/log
source $( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd )/config

HOST_RESULT="$(host $freenom_domain_name 80.80.80.80)"
DNS_IP=$(echo $HOST_RESULT | cut -d' ' -f 12)
CURR_IP="$(curl -s $GET_IP_URL)"

$LOGGER_SCRIPT start

$LOGGER_SCRIPT continue "Current IP: $CURR_IP :: DNS IP: $DNS_IP"

if [ $DNS_IP = $CURR_IP ]
then
$LOGGER_SCRIPT continue "No change is needed, exiting"
else
$LOGGER_SCRIPT continue "Change is needed procedeing to execute freenom update script"
$UPDATE_SCRIPT
fi
$LOGGER_SCRIPT end

config

#!/bin/bash
freenom_email="[email protected]"
freenom_passwd="hackme"
freenom_domain_name="example.com"
freenom_domain_id="000000000"

log

#!/bin/bash
FULL_PATH=$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd )/log.log
if [ ! -e $FULL_PATH ]
then
touch $FULL_PATH
fi
case $1 in
"erase")
rm $FULL_PATH
;;
"start")
echo "Started domain address check at:   $(date)" >> $FULL_PATH
;;
continue)
echo $2 >> $FULL_PATH
;;
"end")
echo "" >> $FULL_PATH
echo "" >> $FULL_PATH
echo "" >> $FULL_PATH
echo "" >> $FULL_PATH
;;
*)
echo "$1  no es una opción"
exit 1
;;
esac

update

#!/bin/bash
set -u

# settings
# Login information of freenom.com
# Open DNS management page in your browser.
# URL vs settings:
#   https://my.freenom.com/clientarea.php?managedns={freenom_domain_name}&domainid={freenom_domain_id}
source $( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd )/config
BASE_URL="https://my.freenom.com"
CAREA_URL="$BASE_URL/clientarea.php"
LOGIN_URL="$BASE_URL/dologin.php"
LOGOUT_URL="$BASE_URL/logout.php"
MANAGED_URL="$CAREA_URL?managedns=$freenom_domain_name&domainid=$freenom_domain_id"
GET_IP_URL="https://api.ipify.org/"
LOGGER_SCRIPT=$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null && pwd )/log

# get current ip address
current_ip="$(curl -s "$GET_IP_URL")"

if [ -z "$current_ip" ]; then
        $LOGGER_SCRIPT continue "Could not get current IP address."
    exit 1
fi

cookie_file=$(mktemp)
cleanup() {
    $LOGGER_SCRIPT continue "Cleanup"
    rm -f "$cookie_file"
}
trap cleanup INT EXIT TERM

$LOGGER_SCRIPT continue "Login"
loginResult=$(curl --compressed -k -L -c "$cookie_file" \
                   -F "username=$freenom_email" -F "password=$freenom_passwd" \
                   -e "$CAREA_URL" \
                   "$LOGIN_URL" 2>&1)

if [ ! -s "$cookie_file" ]; then
    $LOGGER_SCRIPT continue "Login failed: empty cookie."
    exit 1
fi

if echo "$loginResult" | grep -q "/clientarea.php?incorrect=true"; then
    $LOGGER_SCRIPT continue "Login failed."
    exit 1
fi

$LOGGER_SCRIPT continue "Update $current_ip to domain($freenom_domain_name)"
updateResult=$(curl --compressed -k -L -b "$cookie_file" \
                    -e "$MANAGED_URL" \
                    -F "dnsaction=modify" \
                    -F "records[0][line]=" \
                    -F "records[0][type]=A" \
                    -F "records[0][name]=" \
                    -F "records[0][ttl]=14440" \
                    -F "records[0][value]=$current_ip" \
                    "$MANAGED_URL" 2>&1)

if ! echo "$updateResult" | grep -q "name=\"records\[0\]\[value\]\" value=\"$current_ip\""; then
    $LOGGER_SCRIPT continue "Update failed." 1>&2
    exit 1
fi

$LOGGER_SCRIPT continue "Logout"
curl --compressed -k -b "$cookie_file" "$LOGOUT_URL" > /dev/null 2>&1

exit 0

Sorry I took a week to answer, I saw the notification and then completely forgot about it.
I don't use freenom anymore and I don't plan on supporting this anymore.
I also advice you and anyone currently using or thinking about using freenom to pay for a domain name with a different registrar, you can find ones for 1 USD or you can get things like a .net for about 12 USD a year at this point in time.
The reason why I'm telling you not to use them is I've had a bad experience with freenom where I couldn't modify my dns records or even register a new domain.
Their registrar was down for months, and I was even paying them at that point, it wasn't a .tk it was a .eu.

Currently I'm using namecheap.com + noip.com for dyndns and I haven't had any problems with it so far and it's been a year.
Namecheap even allows you to set your tld to point to another hostname so I set it to the noip hostname. IE you register avocado.net then you can point your avocado.net to a noip hostname, log in with noip on the router and it completely negates the necessity for this script.
I'm just telling you this last bit because it's the alternative to this program that works for me, I don't know if it will for you, hopefully it was helpful.

Hi Reiikz,
Thanks for your feedback. and definitly will look into your suggestion see will this work for me.
Thanks once again.