#!/bin/bash

# This script runs a scan for all available TLDs, and notes
# down the TLDs that resolve to `website/template.md`
#
# It also puts some information about the IP Adress from where
# the scan was run (might be relevant for DNS lookups) into
# `website/_data/ip.json`. Structure is at ipapi.co

for domain in $(grep -v '^#' tlds.txt); do
    RESULT=$(dig +time=1 +tries=1 +short "$domain." | head -c -1 | tr '\n' '@' | sed 's/@/`,`/g' | grep -v "connection timed out")
    if [ ! -z "$RESULT" ]; then
        echo $domain
        DOMAIN_REAL="$domain"
        # Very crude regex for punycode domains
        if [[ $(echo "$domain" | grep -E  "^XN--[[:upper:]]+$") ]]; then
            DOMAIN_REAL=$(idn --idna-to-unicode "$domain")
        fi
        echo "|$DOMAIN_REAL|$domain|[http](http://$domain)|[https](https://$domain)|\`$RESULT\`|" >> template.md
    fi
done

curl 'https://ipapi.co/yaml/' > website/_data/ip.json

echo >> template.md
echo "This scan was last run on $(date)" >> template.md