Namecheap DDNS for Synology

namecheap_ddns.sh

#!/bin/bash

## Namecheap DDNS updater for Synology
## Brett Terpstra <https://brettterpstra.com>

PASSWORD="$2"
DOMAIN="$3"
IP="$4"

PARTS=$(echo $DOMAIN | awk 'BEGIN{FS="."} {print NF?NF-1:0}')
# If $DOMAIN has two parts (domain + tld), use wildcard for host
if [[ $PARTS == 1 ]]; then
    HOST='@'
    DOMAIN=$DOMAIN
# If $DOMAIN has a subdomain, separate for HOST and DOMAIN variables
elif [[ $PARTS == 2 ]]; then
    HOST=${DOMAIN%%.*}
    DOMAIN=${DOMAIN#*.}
fi

RES=$(curl -s "https://dynamicdns.park-your-domain.com/update?host=$HOST&domain=$DOMAIN&password=$PASSWORD&ip=$IP")
ERR=$(echo $RES | sed -n "s/.*<ErrCount>\(.*\)<\/ErrCount>.*/\1/p")

if [[ $ERR -gt 0 ]]; then
    echo "badauth"
else
    echo "good"
fi

Any instructions about how to install it?

https://brettterpstra.com/2021/08/26/custom-urls-for-your-synology-with-namecheap/

https://brettterpstra.com/2021/08/26/custom-urls-for-your-synology-with-namecheap/

Thank you for your kind and quick response.

Unfortunately it didn't work for me. :( I followed the steps as mentioned, and the platform shows the connection with Namecheap as correct, however the IP address is not updated.

Attached images.

Thank you for this script! Are you able to improve the parsing logic so that it accepts TLDs with multiple parts? For example:
domain.co.uk
domain.com.au
domain.co.nz

Best regards

I'm afraid I don't have time to rewrite the script to handle multi-part TLDs right now, but you could always hardcode it instead of having it split it automatically.

…

On 7 Aug 2022, at 12:45, gwythan wrote: Thank you for this script! Are you able to improve the parsing logic so that it accepts TLDs with multiple parts? For example: domain.co.uk domain.com.au domain.co.nz Best regards -- Reply to this email directly or view it on GitHub: https://gist.github.com/fab7137c71d951d36b166622a4d5800d#gistcomment-4258861 You are receiving this because you authored the thread. Message ID: ***@***.***>