* 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

1 files changed, 16 insertions, 0 deletions

diff --git a/test/resolv/test_addr.rb b/test/resolv/test_addr.rb
new file mode 100644
index 0000000000..84bc8c2d3b
--- /dev/null
+++ b/test/resolv/test_addr.rb
@@ -0,0 +1,16 @@
+require 'test/unit'
+require 'resolv'
+require 'socket'
+
+class TestResolvAddr < Test::Unit::TestCase
+  def test_invalid_ipv4_address
+    assert_not_match(Resolv::IPv4::Regex, "1.2.3.256", "[ruby-core:29501]")
+    1000.times {|i|
+      if i < 256
+        assert_match(Resolv::IPv4::Regex, "#{i}.#{i}.#{i}.#{i}")
+      else
+        assert_not_match(Resolv::IPv4::Regex, "#{i}.#{i}.#{i}.#{i}")
+      end
+    }
+  end
+end