Bug in `ValidateFQDN` function

[ehsandeep]

from https://github.com/projectdiscovery/public-bugbounty-programs/blob/main/pkg/dns/dns.go#L27-L36

func ValidateFQDN(value string) bool {
    // check if domain can can be parsed
    tld, err := publicsuffix.EffectiveTLDPlusOne(value)
    if err != nil {
        return false
    }

    // check if top level domain is equal to original and it's a valid domain name
    return tld == value && govalidator.IsDNSName(tld)
}

flagging ngrok.io as invalid domain - https://github.com/projectdiscovery/public-bugbounty-programs/actions/runs/5364609119/jobs/9732904993

[MattSilvaa]

Hey! I can take this on

[MattSilvaa]

So it seems like the reason this is occurring is because ngrok.io is in the PSL. Do you want to change the fqdn logic to not consider the PSL when validating?

EDIT: Modified the logic to only look at the ICANN domains in the PSL