README

This module provides a set of fields to allow domain lookup via DNS over HTTPS services.

• Validated Email Field - validates the domain part of a provided email address via MX lookup
• Validated Domain Field - validates any domain via the configured record type (default: A)
• Selectable Lookup Field - validates any domain via multiple, selectable record types

Some APIs reject requests if a domain or domain part is invalid e.g user@examplecom or user@hotmailcom With this module you can check values using DoH prior to submitting or saving them.

Requirements

Silverstripe 4 / see composer.json

Features

• Plugs into Cloudflare DNS over HTTPS
• Plugs into Google Public DNS over HTTPS
• Does Caching based on TTL (Flysystem middleware)
• Provides a Validatable Email Form Field (MX record check on domain part) for use in forms
• Provides a Validatable Domain Form Field (A record check on domain)
• Provides a Form Field for selecting which DNS records to check against a domain
• Provides EditableFormFields for the silverstripe/userforms module

Basic MX Validation

use Codem\DomainValidation\CloudflareDnsOverHttps;
...
$domain = "google.com"
$service = new CloudflareDnsOverHttps();
$service->setDomain($domain);
$answers = $service->performLookup('MX');
//OR shortcut
$service->hasMxRecord();
//OR compare priority and hostname exactly
$service->hasMxRecord('1 some.host');

Basic A + AAAA Validation

use Codem\DomainValidation\CloudflareDnsOverHttps;
...
$domain = "google.com"
$service = new CloudflareDnsOverHttps();
$service->setDomain($domain);
$results = [];
$results['AAAA'] = $service->performLookup('AAAA');
$results['A']= $service->performLookup('A');

Form field usage

See DomainValidationForm in the source for a full example

UserForm field

Editable form fields are available for the silverstripe/userforms module

The EditableSelectableLookupField field allows for DnsChecks to be configured along with strict checking. The ValidatedDomainField allows for configurable record type and strict/non-strict checking.

• Strict Checking - the lookup must return entries for each record type requested
• Non Strict Checking - the lookup can return any number of entries for the field to validate as OK

Install

/path/to/php /path/to/composer require codem/silverstripe-domain-validation:^n.N

This is a pre-release, not currently in Packagist.

Author

Codem

License

See LICENCE