From 92fa72e07a52c3fce1c3fa82175e6ca5a758c3c1 Mon Sep 17 00:00:00 2001
From: Dennis Eichhorn <spl1nes.com@googlemail.com>
Date: Thu, 21 Jul 2016 15:00:44 +0200
Subject: [PATCH] Ip converter/lookup (country)

Can be considered as converter since ip->country is performed
---
 Utils/Converter/Ip.php | 87 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 87 insertions(+)
 create mode 100644 Utils/Converter/Ip.php

diff --git a/Utils/Converter/Ip.php b/Utils/Converter/Ip.php
new file mode 100644
index 000000000..af243582f
--- /dev/null
+++ b/Utils/Converter/Ip.php
@@ -0,0 +1,87 @@
+<?php
+/**
+ * Orange Management
+ *
+ * PHP Version 7.0
+ *
+ * @category   TBD
+ * @package    TBD
+ * @author     OMS Development Team <dev@oms.com>
+ * @author     Dennis Eichhorn <d.eichhorn@oms.com>
+ * @copyright  2013 Dennis Eichhorn
+ * @license    OMS License 1.0
+ * @version    1.0.0
+ * @link       http://orange-management.com
+ */
+namespace phpOMS\Utils\Converter;
+
+/**
+ * Ip converter.
+ *
+ * @category   Framework
+ * @package    phpOMS\Utils\Converter
+ * @author     OMS Development Team <dev@oms.com>
+ * @author     Dennis Eichhorn <d.eichhorn@oms.com>
+ * @license    OMS License 1.0
+ * @link       http://orange-management.com
+ * @since      1.0.0
+ */
+class Ip
+{
+    const IP_TABLE_PATH = __DIR__ . '/../../Localization/Default/Ip/ipGeoLocation.csv';
+    const IP_TABLE_ITERATIONS = 100;
+
+    private function __construct() {}
+
+    public static function ip2Float(string $ip) : float 
+    {
+        $split = explode('.', $ip);
+        return $split[0] * (256 ** 3) + $split[1] * (256 ** 2) + $split[2] * (256 ** 1) + $split[3];
+    }
+
+    public static function ip2Country(string $ip) : string 
+    {
+        $fh = fopen(self::IP_TABLE_PATH, 'r');
+
+        fseek($fh, 0, SEEK_END);
+        $end = ftell($fh);
+        fseek($fh, 0);
+        $start = 0;
+        $current = $start;
+
+        $ip = self::ip2Float($ip);
+        $country = '';
+        $counter = 0;
+
+        while($counter < self::IP_TABLE_ITERATIONS) {
+            $line = fgets($fh, 150);
+            if($current !== 0) {
+                $line = fgets($fh, 150);
+            }
+
+            $split = explode(',', $line);
+
+            if($ip >= $split[0] && $ip <= $split[1]) {
+                $country = $split[2];
+                break;
+            }
+
+            if($ip > $split[1]) {
+                $larger = true;
+                $start = $current;
+                fseek($fh, ($end - $current) / 2, SEEK_CUR);
+            } else {
+                $larger = false;
+                $end = $current;
+                fseek($fh, ($start - $current) / 2, SEEK_CUR);
+            }
+
+            $counter++;
+            $current = ftell($fh);
+        }
+
+        fclose($fh);
+
+        return $country;
+    }
+}
\ No newline at end of file