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UserEmailLocal.php
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UserEmailLocal.php
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<?php
namespace App\Rules;
use Illuminate\Contracts\Validation\Rule;
use Illuminate\Support\Facades\Validator;
class UserEmailLocal implements Rule
{
private $message;
private $external;
private $blacklist = [
// These are special names in Cyrus IMAP
'anonymous',
'anyone',
];
/**
* Class constructor.
*
* @param bool $external The user in an external domain, or not
*/
public function __construct(bool $external)
{
$this->external = $external;
}
/**
* Determine if the validation rule passes.
*
* Validation of local part of an email address that's
* going to be user's login.
*
* @param string $attribute Attribute name
* @param mixed $login Local part of email address
*/
public function passes($attribute, $login): bool
{
// Strict validation
if (
empty($login)
|| !is_string($login)
|| !preg_match('/^[A-Za-z0-9_.-]+$/', $login)
) {
$this->message = \trans('validation.entryinvalid', ['attribute' => $attribute]);
return false;
}
// Standard email address validation
$v = Validator::make([$attribute => $login . '@test.com'], [$attribute => 'required|email']);
if ($v->fails()) {
$this->message = \trans('validation.entryinvalid', ['attribute' => $attribute]);
return false;
}
// Global blacklist, e.g. for keywords reserved in the backend(s)
// TODO: This should not be done when checking aliases or groups (they don't create a mailbox)
foreach ($this->blacklist as $entry) {
if (strcasecmp($login, $entry) == 0) {
$this->message = \trans('validation.entryexists', ['attribute' => $attribute]);
return false;
}
}
// Check if the local part is not one of exceptions
// (when creating an account/alias in a public domain)
if (!$this->external) {
$exceptions = '/^(admin|administrator|postmaster|sales|root|webmaster|info|abuse|noreply)$/i';
if (preg_match($exceptions, $login)) {
$this->message = \trans('validation.entryexists', ['attribute' => $attribute]);
return false;
}
}
return true;
}
/**
* Get the validation error message.
*/
public function message(): ?string
{
return $this->message;
}
}

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