From 127aae1e14f985d74ab2d12a293f98fbf832e6d4 Mon Sep 17 00:00:00 2001
From: Thiago Talma <thiago@thiagomt.com>
Date: Tue, 10 Mar 2015 12:45:19 -0300
Subject: [PATCH] Gii: Control access also by the hostname

close #7655
---
 extensions/debug/CHANGELOG.md |  2 +-
 extensions/debug/Module.php   | 13 +++++++++++++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/extensions/debug/CHANGELOG.md b/extensions/debug/CHANGELOG.md
index 604c0d34dc..111b193a72 100644
--- a/extensions/debug/CHANGELOG.md
+++ b/extensions/debug/CHANGELOG.md
@@ -4,7 +4,7 @@ Yii Framework 2 debug extension Change Log
 2.0.4 under development
 -----------------------
 
-- no changes in this release.
+- Enh #7655: Added ability to filter access by hostname (thiagotalma)
 
 
 2.0.3 March 01, 2015
diff --git a/extensions/debug/Module.php b/extensions/debug/Module.php
index 3a6fa09b85..764392591d 100644
--- a/extensions/debug/Module.php
+++ b/extensions/debug/Module.php
@@ -30,6 +30,13 @@ class Module extends \yii\base\Module implements BootstrapInterface
      * by localhost.
      */
     public $allowedIPs = ['127.0.0.1', '::1'];
+    /**
+     * @var array the list of hosts that are allowed to access this module.
+     * Each array element is a hostname that will be resolved to an IP address that is compared 
+     * with the IP address of the user. A use case is to use a dynamic DNS (DDNS) to allow access.
+     * The default value is `[]`.
+     */
+    public $allowedHosts = [];
     /**
      * @inheritdoc
      */
@@ -197,6 +204,12 @@ class Module extends \yii\base\Module implements BootstrapInterface
                 return true;
             }
         }
+        foreach ($this->allowedHosts as $hostname) {
+            $filter = gethostbyname($hostname);
+            if ($filter === $ip) {
+                return true;
+            }
+        }
         Yii::warning('Access to debugger is denied due to IP address restriction. The requesting IP address is ' . $ip, __METHOD__);
         return false;
     }