Added rdap web client

rdap/client/rdap.php

@@ -0,0 +1,42 @@
+<?php
+session_start();
+
+// Check for a valid POST request
+if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
+    echo json_encode(['error' => 'Invalid request method.']);
+    exit;
+}
+
+// Captcha validation (if used)
+if ($_POST['captcha'] !== $_SESSION['captcha']) {
+    echo json_encode(['error' => 'Captcha verification failed']);
+    exit;
+}
+
+// Invalidate the current captcha
+unset($_SESSION['captcha']);
+
+// Domain name from the POST request
+$domain = $_POST['domain'];
+
+// RDAP server URL
+$rdapServer = 'https://rdap.EXAMPLE.COM/domain/';
+
+// Initialize cURL session
+$ch = curl_init();
+curl_setopt($ch, CURLOPT_URL, $rdapServer . $domain);
+curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
+
+// Execute cURL session and close it
+$response = curl_exec($ch);
+curl_close($ch);
+
+// Check for errors
+if (!$response) {
+    echo json_encode(['error' => 'Error fetching RDAP data.']);
+    exit;
+}
+
+// Output the RDAP data
+echo $response;