lib/rack/multipart.rb in rack-3.0.10 vs lib/rack/multipart.rb in rack-3.1.0

@@ -4,19 +4,52 @@
 require_relative 'utils'
 
 require_relative 'multipart/parser'
 require_relative 'multipart/generator'
 
+require_relative 'bad_request'
+
 module Rack
   # A multipart form data parser, adapted from IOWA.
   #
   # Usually, Rack::Request#POST takes care of calling this.
   module Multipart
     MULTIPART_BOUNDARY = "AaB03x"
 
+    class MissingInputError < StandardError
+      include BadRequest
+    end
+
+    # Accumulator for multipart form data, conforming to the QueryParser API.
+    # In future, the Parser could return the pair list directly, but that would
+    # change its API.
+    class ParamList # :nodoc:
+      def self.make_params
+        new
+      end
+
+      def self.normalize_params(params, key, value)
+        params << [key, value]
+      end
+
+      def initialize
+        @pairs = []
+      end
+
+      def <<(pair)
+        @pairs << pair
+      end
+
+      def to_params_hash
+        @pairs
+      end
+    end
+
     class << self
       def parse_multipart(env, params = Rack::Utils.default_query_parser)
-        io = env[RACK_INPUT]
+        unless io = env[RACK_INPUT]
+          raise MissingInputError, "Missing input stream!"
+        end
 
         if content_length = env['CONTENT_LENGTH']
           content_length = content_length.to_i
         end