auth-proxy redirects to mod page if we're not authenticated. seems to work well enough

auth-proxy.php

@@ -1,5 +1,7 @@
 <?php
 
+require __DIR__ . '/inc/functions.php';
+
 // Define the remote root URL as a constant
 define('REMOTE_ROOT_URL', 'http://localhost:8300/');
 
@@ -14,6 +16,7 @@ function proxy() {
     $ch = curl_init();
     curl_setopt($ch, CURLOPT_URL, $remoteUrl);
     curl_setopt($ch, CURLOPT_HEADER, true);
+    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); // Return the response as a string
 
     // If there was a POST request, then forward that as well.
     if ($_SERVER['REQUEST_METHOD'] == 'POST') {
@@ -21,8 +24,45 @@ function proxy() {
         curl_setopt($ch, CURLOPT_POSTFIELDS, $_POST);
     }
 
-    curl_exec($ch);
+    $response = curl_exec($ch);
+
+    if ($response === false) {
+        header("HTTP/1.1 502 Bad Gateway");
+        echo "Proxy Error: Unable to communicate with the backend server.";
+        exit;
+    }
+
+    // Split the response into headers and body
+    list($headers, $body) = explode("\r\n\r\n", $response, 2);
+
+    // Set the headers from the backend response
+    $headerLines = explode("\r\n", $headers);
+    foreach ($headerLines as $headerLine) {
+        header($headerLine);
+    }
+
+    // Output the body content
+    echo $body;
+
     curl_close($ch);
 }
 
-proxy();
+function main() {
+    global $mod;
+
+    check_login(true);
+
+    if (!$mod) {
+        // Get the current URL, including query parameters
+        $currentUrl = $_SERVER['REQUEST_URI'];
+        $status = 303;
+        $redirectUrl = '/mod.php?r=' . urlencode($currentUrl) . '&status=' . $status;
+        header('Location: ' . $redirectUrl, true, $status);
+        exit;
+    }
+
+    #echo json_encode($mod);
+    proxy();
+}
+
+main();