A simple dynamic dns script to update DNS records through serveriai.lt api

Edit the script before uploading it to the hosting provider:

1. Generate AES key and IV: dd if=/dev/urandom bs=1 count=16 2> /dev/null | xxd -p
2. Create an API user: https://www.iv.lt/pagalba/Klient%C5%B3_sistemos_API#Specialus_API_naudotojas
3. Encrypt the API password using AES-CBC, ex:

echo -n "YourAPIpasswordGoesHere" | \
openssl enc -aes-128-cbc -K 304d08c04replace289c11d316f7ffc8 -iv d42replace7557723c30dcde3db0d3bd | xxd -p -c 64

4. Get your domain id: https://klientams.iv.lt/domain.php?id=xxxxx
5. Put the api user name, domain id and the encrypted password into update_domain.php file
6. Edit the list of domains that script allowed to update, ex $allowed_domains = array("domain1", "domain2");
7. Save
8. Upload

Add this line to cron:

*/15 * * * * /usr/bin/curl --silent "https://hostedserver/update_domain.php?k=304d08c04replace289c11d316f7ffc8&i=d42replace7557723c30dcde3db0d3bd&rec=domain1”

This command will keep domain1 up to date with the dynamic IP address