Add modules to repository

EvilPortal/includes/api/Portal.php

@@ -0,0 +1,70 @@
+<?php namespace evilportal;
+
+abstract class Portal
+{
+    protected $request;
+    protected $response;
+    protected $error;
+
+    protected $AUTHORIZED_CLIENTS_FILE = "/tmp/EVILPORTAL_CLIENTS.txt";
+
+    public function __construct($request)
+    {
+        $this->request = $request;
+    }
+
+    public function getResponse()
+    {
+        if (empty($this->error) && !empty($this->response)) {
+            return $this->response;
+        } elseif (empty($this->error) && empty($this->response)) {
+            return array('error' => 'API returned empty response');
+        } else {
+            return array('error' => $this->error);
+        }
+    }
+
+    protected function authorizeClient($clientIP)
+    {
+        if (!$this->isClientAuthorized($clientIP)) {
+            exec("iptables -t nat -I PREROUTING -s {$clientIP} -j ACCEPT");
+            file_put_contents($this->AUTHORIZED_CLIENTS_FILE, "{$clientIP}\n", FILE_APPEND);
+            $this->redirect();
+        } else {
+            return false;
+        }
+    }
+
+    protected function handleAuthorization()
+    {
+        if (isset($this->request->target)) {
+            $this->authorizeClient($_SERVER['REMOTE_ADDR']);
+            $this->showSuccess();
+        } elseif ($this->isClientAuthorized($_SERVER['REMOTE_ADDR'])) {
+            $this->showSuccess();
+        } else {
+            $this->showError();
+        }
+    }
+
+    protected function redirect()
+    {
+        header("Location: {$this->request->target}", true, 302);
+    }
+
+    protected function showSuccess()
+    {
+        echo "You have been authorized successfully.";
+    }
+
+    protected function showError()
+    {
+        echo "You have not been authorized.";
+    }
+
+    protected function isClientAuthorized($clientIP)
+    {
+        $authorizeClients = file_get_contents($this->AUTHORIZED_CLIENTS_FILE);
+        return strpos($authorizeClients, $clientIP);
+    }
+}