Explicitly require 'active_support/concern'

[#36737359]

When starting msfconsole, 'bundler/setup' is not required, the
'msf/env/gemcache' is required instead. Unlike 'bundler/setup' the
msf/env gemcache does not do the automatic requires for gems in the
cache, so explicit requires on 'active_support/concern' is needed to get
ActiveSupport::Concern defined.  (I could have done require
'active_support' to match the behavior of 'bundler/setup', but a smaller
require seemed more appropriate.

Gemfile

@@ -1,10 +1,13 @@
 source 'http://rubygems.org'
 
+# Need 3+ for ActiveSupport::Concern
+gem 'activesupport', '>= 3.0.0'
+
 group :development do
-  # running documention generation tasks
+  # running documentation generation tasks
   gem 'rake'
-  # Markdown formatting for yara
+  # Markdown formatting for yard
   gem 'redcarpet'
-  # generating documention
+  # generating documentation
   gem 'yard'
 end

Gemfile.lock

@@ -1,6 +1,11 @@
 GEM
   remote: http://rubygems.org/
   specs:
+    activesupport (3.2.8)
+      i18n (~> 0.6)
+      multi_json (~> 1.0)
+    i18n (0.6.1)
+    multi_json (1.3.6)
     rake (0.9.2.2)
     redcarpet (2.1.1)
     yard (0.8.2.1)
@@ -9,6 +14,7 @@ PLATFORMS
   ruby
 
 DEPENDENCIES
+  activesupport (>= 3.0.0)
   rake
   redcarpet
   yard

lib/msf/core/module_manager/cache.rb

@@ -1,3 +1,8 @@
+#
+# Gems
+#
+require 'active_support/concern'
+
 # Concerns the module cache maintained by the {Msf::ModuleManager}.
 module Msf::ModuleManager::Cache
   extend ActiveSupport::Concern

lib/msf/core/module_manager/loading.rb

@@ -1,3 +1,11 @@
+#
+# Gems
+#
+require 'active_support/concern'
+
+#
+# Project
+#
 require 'msf/core/modules/loader/archive'
 require 'msf/core/modules/loader/directory'
 

lib/msf/core/module_manager/module_paths.rb

@@ -1,3 +1,8 @@
+#
+# Gems
+#
+require 'active_support/concern'
+
 # Deals with module paths in the {Msf::ModuleManager}
 module Msf::ModuleManager::ModulePaths
   extend ActiveSupport::Concern

lib/msf/core/module_manager/module_sets.rb

@@ -1,3 +1,12 @@
+#
+# Gems
+#
+require 'active_support/concern'
+
+#
+# Project
+#
+
 # Defines the MODULE_* constants
 require 'msf/core/constants'