vendor/rails/actionpack/lib/action_controller/params_parser.rb

   1 module ActionController
   2   class ParamsParser
   3     ActionController::Base.param_parsers[Mime::XML] = :xml_simple
   4     ActionController::Base.param_parsers[Mime::JSON] = :json
   5
   6     def initialize(app)
   7       @app = app
   8     end
   9
  10     def call(env)
  11       if params = parse_formatted_parameters(env)
  12         env["action_controller.request.request_parameters"] = params
  13       end
  14
  15       @app.call(env)
  16     end
  17
  18     private
  19       def parse_formatted_parameters(env)
  20         request = Request.new(env)
  21
  22         return false if request.content_length.zero?
  23
  24         mime_type = content_type_from_legacy_post_data_format_header(env) || request.content_type
  25         strategy = ActionController::Base.param_parsers[mime_type]
  26
  27         return false unless strategy
  28
  29         case strategy
  30           when Proc
  31             strategy.call(request.raw_post)
  32           when :xml_simple, :xml_node
  33             body = request.raw_post
  34             body.blank? ? {} : Hash.from_xml(body).with_indifferent_access
  35           when :yaml
  36             YAML.load(request.raw_post)
  37           when :json
  38             body = request.raw_post
  39             if body.blank?
  40               {}
  41             else
  42               data = ActiveSupport::JSON.decode(body)
  43               data = {:_json => data} unless data.is_a?(Hash)
  44               data.with_indifferent_access
  45             end
  46           else
  47             false
  48         end
  49       rescue Exception => e # YAML, XML or Ruby code block errors
  50         raise
  51           { "body" => request.raw_post,
  52             "content_type" => request.content_type,
  53             "content_length" => request.content_length,
  54             "exception" => "#{e.message} (#{e.class})",
  55             "backtrace" => e.backtrace }
  56       end
  57
  58       def content_type_from_legacy_post_data_format_header(env)
  59         if x_post_format = env['HTTP_X_POST_DATA_FORMAT']
  60           case x_post_format.to_s.downcase
  61             when 'yaml'
  62               return Mime::YAML
  63             when 'xml'
  64               return Mime::XML
  65           end
  66         end
  67
  68         nil
  69       end
  70   end
  71 end