Astra Security

libraries/Astra_ip.php

@@ -0,0 +1,61 @@
+<?php
+
+if (!class_exists("Astra_ip")) {
+    class Astra_ip
+    {
+        function __construct()
+        {
+        }
+
+        function get_ip_address()
+        {
+
+            if (defined("CZ_IP_HEADER")) {
+                if (array_key_exists(CZ_IP_HEADER, $_SERVER)) {
+                    return $_SERVER[CZ_IP_HEADER];
+                }
+            }
+
+            $serverIp = isset($_SERVER['SERVER_ADDR']) ? $_SERVER['SERVER_ADDR'] : '';
+
+            $ip_keys = array('HTTP_CF_CONNECTING_IP', 'HTTP_X_SUCURI_CLIENTIP', 'HTTP_X_REAL_IP', 'HTTP_CLIENT_IP', 'HTTP_X_FORWARDED_FOR', 'HTTP_X_FORWARDED', 'HTTP_X_CLUSTER_CLIENT_IP', 'HTTP_FORWARDED_FOR', 'HTTP_FORWARDED', 'REMOTE_ADDR');
+            foreach ($ip_keys as $key) {
+                if (array_key_exists($key, $_SERVER) === true) {
+                    foreach (explode(',', $_SERVER[$key]) as $ip) {
+                        // trim for safety measures
+                        $ip = trim($ip);
+                        // attempt to validate IP
+                        if (($this->validate_ip($ip) || $this->validate_ipv6($ip)) && $ip !== $serverIp) {
+                            return $ip;
+                        }
+                    }
+                }
+            }
+            return isset($_SERVER['REMOTE_ADDR']) ? $_SERVER['REMOTE_ADDR'] : false;
+        }
+
+        /**
+         * Ensures an ip address is both a valid IP and does not fall within
+         * a private network range.
+         */
+
+        function validate_ipv6($ip)
+        {
+            if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)) {
+                return true;
+            }
+
+            return false;
+        }
+
+        function validate_ip($ip)
+        {
+            if (filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4 | FILTER_FLAG_NO_PRIV_RANGE | FILTER_FLAG_NO_RES_RANGE) === false) {
+                return false;
+            }
+            return true;
+        }
+
+
+    }
+}