From 20a6e94e4758334209a1c3d241737c84d759daad Mon Sep 17 00:00:00 2001
From: akr <akr@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sun, 18 Apr 2010 09:09:46 +0000
Subject: * lib/resolv.rb (Resolv::IPv4::Regex): make it only accept 0 to 255. 
  [ruby-core:29501]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@27389 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 lib/resolv.rb | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

(limited to 'lib')

diff --git a/lib/resolv.rb b/lib/resolv.rb
index 5a6032c604..9a96c55931 100644
--- a/lib/resolv.rb
+++ b/lib/resolv.rb
@@ -2110,7 +2110,11 @@ class Resolv
     ##
     # Regular expression IPv4 addresses must match.
 
-    Regex = /\A(\d+)\.(\d+)\.(\d+)\.(\d+)\z/
+    Regex256 = /0
+               |1(?:[0-9][0-9]?)?
+               |2(?:[0-4][0-9]?|5[0-5]?|[6-9])?
+               |[3-9][0-9]?/x
+    Regex = /\A(#{Regex256})\.(#{Regex256})\.(#{Regex256})\.(#{Regex256})\z/
 
     def self.create(arg)
       case arg
-- 
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