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pixelfed/app/Rules/Webfinger.php

60 lines
1.3 KiB
PHP

<?php
namespace App\Rules;
use Illuminate\Contracts\Validation\Rule;
class WebFinger implements Rule
{
/**
* Determine if the validation rule passes.
*
* @param string $attribute
* @param mixed $value
* @return bool
*/
public function passes($attribute, $value)
{
if (! is_string($value)) {
return false;
}
$mention = $value;
if (str_starts_with($mention, '@')) {
$mention = substr($mention, 1);
}
$parts = explode('@', $mention);
if (count($parts) !== 2) {
return false;
}
[$username, $domain] = $parts;
if (empty($username) ||
! preg_match('/^[a-zA-Z0-9_.-]+$/', $username) ||
strlen($username) >= 80) {
return false;
}
if (empty($domain) ||
! str_contains($domain, '.') ||
! preg_match('/^[a-zA-Z0-9.-]+$/', $domain) ||
strlen($domain) >= 255) {
return false;
}
return true;
}
/**
* Get the validation error message.
*
* @return string
*/
public function message()
{
return 'The :attribute must be a valid WebFinger address (username@domain.tld or @username@domain.tld)';
}
}