Filter added for browser plugins for #179

git-svn-id: https://beef.googlecode.com/svn/trunk@657 b87d56ec-f9c0-11de-8c8a-61c5e9addfc9

lib/filter/init.rb

@@ -58,10 +58,8 @@ module BeEF
     # verify the browser_plugins string is valid
     def self.is_valid_browser_plugins?(str)
       return false if not BeEF::Filter.is_non_empty_string?(str)
-      return false if BeEF::Filter.has_non_printable_char?(str)
       return false if str.length > 255  
-      puts "TODO filter browser plugins: issue 179"
-      true
+      return (str =~ /[^\w\d\s()-.,;_\302\256]/).nil? # \302\256 is the (r) character
     end
 
   end

lib/server/inithandler.rb

@@ -77,7 +77,6 @@ module BeEF
       
       # get and store the browser plugins
       browser_plugins = get_param(request.query, 'BrowserPlugins')
-      #TODO: add filters - is_valid_browser_plugins is only a stub
       raise WEBrick::HTTPStatus::BadRequest, "Invalid browser plugins" if not Filter.is_valid_browser_plugins?(browser_plugins)
       BD.set(session_id, 'BrowserPlugins', browser_plugins)
       
@@ -100,7 +99,6 @@ module BeEF
     # returns a selected parameter from the query string.
     def get_param(query, key)
       return nil if query[key].nil?
-      
       b64_param = query[key]
       raise WEBrick::HTTPStatus::BadRequest, "Invalid init base64 value" if Filter.has_non_printable_char?(b64_param)
       escaped_param = CGI.unescapeHTML(b64_param)