AC-7025 - Sanitize input handler parameter

Author: Devika-GL

lib/internal/Magento/Framework/RegexValidator.php

@@ -0,0 +1,53 @@
+<?php
+/**
+ * Copyright © Magento, Inc. All rights reserved.
+ * See COPYING.txt for license details.
+ */
+declare(strict_types=1);
+
+namespace Magento\Framework;
+
+use Magento\Framework\App\ObjectManager;
+use Magento\Framework\Validator\RegexFactory;
+
+class RegexValidator extends RegexFactory
+{
+
+    /**
+     * @var RegexFactory
+     */
+    private RegexFactory $regexValidatorFactory;
+
+    /**
+     * Validation pattern for handles array
+     */
+    private const VALIDATION_RULE_PATTERN = '/^[a-z0-9,.]+[a-z0-9_,.]*$/i';
+
+    /**
+     * @param RegexFactory|null $regexValidatorFactory
+     */
+    public function __construct(
+        ?RegexFactory $regexValidatorFactory = null
+    ) {
+        $this->regexValidatorFactory = $regexValidatorFactory
+            ?: ObjectManager::getInstance()->get(RegexFactory::class);
+    }
+
+    /**
+     * Validates parameter regex
+     *
+     * @param string $params
+     * @param string $pattern
+     * @return bool
+     */
+    public function validateParamRegex($params, $pattern = self::VALIDATION_RULE_PATTERN)
+    {
+        $validator = $this->regexValidatorFactory->create(['pattern' => $pattern]);
+
+        if ($params && !$validator->isValid($params)) {
+            return false;
+        }
+
+        return true;
+    }
+}