From f4deae20c7ae3b270d7b476a270100576977f700 Mon Sep 17 00:00:00 2001
From: Salim Alam <salam@chef.io>
Date: Thu, 17 Mar 2016 14:04:53 -0700
Subject: Override no_proxy with internal matcher

---
 chef-config/lib/chef-config/config.rb | 10 ++++++++--
 chef.gemspec                          |  1 +
 lib/chef/http/basic_client.rb         |  7 ++++++-
 3 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/chef-config/lib/chef-config/config.rb b/chef-config/lib/chef-config/config.rb
index 623e8c9d87..c75139e49f 100644
--- a/chef-config/lib/chef-config/config.rb
+++ b/chef-config/lib/chef-config/config.rb
@@ -27,6 +27,7 @@ require "chef-config/windows"
 require "chef-config/path_helper"
 require "mixlib/shellout"
 require "uri"
+require "fuzzyurl"
 require "openssl"
 
 module ChefConfig
@@ -855,8 +856,13 @@ module ChefConfig
               end
 
       excludes = ENV["no_proxy"].to_s.split(/\s*,\s*/).compact
-      excludes = excludes.map { |exclude| exclude =~ /:\d+$/ ? exclude : "#{exclude}:*" }
-      return proxy unless excludes.any? { |exclude| File.fnmatch(exclude, "#{host}:#{port}") }
+      return proxy unless excludes.any? { |exclude| fuzzy_hostname_match?(exclude, host) }
+    end
+
+    def self.fuzzy_hostname_match?(match, hostname)
+        # Do greedy matching by adding wildcard if it is not specified
+        match = "*" + match if !match.start_with?("*")
+        Fuzzyurl.matches?(Fuzzyurl.mask(hostname: match), hostname)
     end
 
     # Chef requires an English-language UTF-8 locale to function properly.  We attempt
diff --git a/chef.gemspec b/chef.gemspec
index c55b2423ed..159f803c91 100644
--- a/chef.gemspec
+++ b/chef.gemspec
@@ -31,6 +31,7 @@ Gem::Specification.new do |s|
   s.add_dependency "diff-lcs", "~> 1.2", ">= 1.2.4"
 
   s.add_dependency "chef-zero", "~> 4.5"
+  s.add_dependency "fuzzyurl", '~> 0.8.0'
 
   s.add_dependency "plist", "~> 3.1.0"
 
diff --git a/lib/chef/http/basic_client.rb b/lib/chef/http/basic_client.rb
index b6ae5d9a6f..796550a516 100644
--- a/lib/chef/http/basic_client.rb
+++ b/lib/chef/http/basic_client.rb
@@ -100,7 +100,12 @@ class Chef
       end
 
       def build_http_client
-        http_client = http_client_builder.new(host, port)
+        # Note: the last nil in the new below forces Net::HTTP to ignore the
+        # no_proxy environment variable. This is a workaround for limitations
+        # in Net::HTTP use of the no_proxy environment variable. We internally
+        # match no_proxy with a fuzzy matcher, rather than letting Net::HTTP
+        # do it.
+        http_client = http_client_builder.new(host, port, nil)
 
         if url.scheme == HTTPS
           configure_ssl(http_client)
-- 
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