Update rack to fix multipart uploads with an empty file [#1945 state:…

…resolved]

actionpack/lib/action_controller/vendor/rack-1.0/rack.rb

@@ -28,6 +28,7 @@ def self.release
 
   autoload :Builder, "rack/builder"
   autoload :Cascade, "rack/cascade"
+  autoload :Chunked, "rack/chunked"
   autoload :CommonLogger, "rack/commonlogger"
   autoload :ConditionalGet, "rack/conditionalget"
   autoload :ContentLength, "rack/content_length"

actionpack/lib/action_controller/vendor/rack-1.0/rack/chunked.rb

@@ -0,0 +1,49 @@
+require 'rack/utils'
+
+module Rack
+
+  # Middleware that applies chunked transfer encoding to response bodies
+  # when the response does not include a Content-Length header.
+  class Chunked
+    include Rack::Utils
+
+    def initialize(app)
+      @app = app
+    end
+
+    def call(env)
+      status, headers, body = @app.call(env)
+      headers = HeaderHash.new(headers)
+
+      if env['HTTP_VERSION'] == 'HTTP/1.0' ||
+         STATUS_WITH_NO_ENTITY_BODY.include?(status) ||
+         headers['Content-Length'] ||
+         headers['Transfer-Encoding']
+        [status, headers.to_hash, body]
+      else
+        dup.chunk(status, headers, body)
+      end
+    end
+
+    def chunk(status, headers, body)
+      @body = body
+      headers.delete('Content-Length')
+      headers['Transfer-Encoding'] = 'chunked'
+      [status, headers.to_hash, self]
+    end
+
+    def each
+      term = "\r\n"
+      @body.each do |chunk|
+        size = bytesize(chunk)
+        next if size == 0
+        yield [size.to_s(16), term, chunk, term].join
+      end
+      yield ["0", term, "", term].join
+    end
+
+    def close
+      @body.close if @body.respond_to?(:close)
+    end
+  end
+end

actionpack/lib/action_controller/vendor/rack-1.0/rack/file.rb

@@ -60,7 +60,7 @@ def serving
         body = self
       else
         body = [F.read(@path)]
-        size = body.first.size
+        size = Utils.bytesize(body.first)
       end
 
       [200, {

actionpack/lib/action_controller/vendor/rack-1.0/rack/handler/cgi.rb

@@ -1,3 +1,5 @@
+require 'rack/content_length'
+
 module Rack
   module Handler
     class CGI
@@ -6,6 +8,8 @@ def self.run(app, options=nil)
       end
 
       def self.serve(app)
+        app = ContentLength.new(app)
+
         env = ENV.to_hash
         env.delete "HTTP_CONTENT_LENGTH"
 

actionpack/lib/action_controller/vendor/rack-1.0/rack/handler/fastcgi.rb

@@ -1,5 +1,6 @@
 require 'fcgi'
 require 'socket'
+require 'rack/content_length'
 
 module Rack
   module Handler
@@ -29,6 +30,8 @@ def read(*args)
       end
 
       def self.serve(request, app)
+        app = Rack::ContentLength.new(app)
+
         env = request.env
         env.delete "HTTP_CONTENT_LENGTH"
 

actionpack/lib/action_controller/vendor/rack-1.0/rack/handler/lsws.rb

@@ -1,5 +1,6 @@
 require 'lsapi'
-#require 'cgi'
+require 'rack/content_length'
+
 module Rack
   module Handler
     class LSWS
@@ -9,6 +10,8 @@ def self.run(app, options=nil)
         end
       end
       def self.serve(app)
+        app = Rack::ContentLength.new(app)
+
         env = ENV.to_hash
         env.delete "HTTP_CONTENT_LENGTH"
         env["SCRIPT_NAME"] = "" if env["SCRIPT_NAME"] == "/"

actionpack/lib/action_controller/vendor/rack-1.0/rack/handler/mongrel.rb

@@ -1,5 +1,7 @@
 require 'mongrel'
 require 'stringio'
+require 'rack/content_length'
+require 'rack/chunked'
 
 module Rack
   module Handler
@@ -33,7 +35,7 @@ def self.run(app, options={})
       end
 
       def initialize(app)
-        @app = app
+        @app = Rack::Chunked.new(Rack::ContentLength.new(app))
       end
 
       def process(request, response)

actionpack/lib/action_controller/vendor/rack-1.0/rack/handler/scgi.rb

@@ -1,5 +1,7 @@
 require 'scgi'
 require 'stringio'
+require 'rack/content_length'
+require 'rack/chunked'
 
 module Rack
   module Handler
@@ -14,7 +16,7 @@ def self.run(app, options=nil)
       end
 
       def initialize(settings = {})
-        @app = settings[:app]
+        @app = Rack::Chunked.new(Rack::ContentLength.new(settings[:app]))
         @log = Object.new
         def @log.info(*args); end
         def @log.error(*args); end

actionpack/lib/action_controller/vendor/rack-1.0/rack/handler/thin.rb

@@ -1,9 +1,12 @@
 require "thin"
+require "rack/content_length"
+require "rack/chunked"
 
 module Rack
   module Handler
     class Thin
       def self.run(app, options={})
+        app = Rack::Chunked.new(Rack::ContentLength.new(app))
         server = ::Thin::Server.new(options[:Host] || '0.0.0.0',
                                     options[:Port] || 8080,
                                     app)

actionpack/lib/action_controller/vendor/rack-1.0/rack/handler/webrick.rb

@@ -1,5 +1,6 @@
 require 'webrick'
 require 'stringio'
+require 'rack/content_length'
 
 module Rack
   module Handler
@@ -14,7 +15,7 @@ def self.run(app, options={})
 
       def initialize(server, app)
         super server
-        @app = app
+        @app = Rack::ContentLength.new(app)
       end
 
       def service(req, res)

actionpack/lib/action_controller/vendor/rack-1.0/rack/lint.rb

@@ -374,59 +374,43 @@ def check_content_type(status, headers)
 
     ## === The Content-Length
     def check_content_length(status, headers, env)
-      chunked_response = false
-      headers.each { |key, value|
-        if key.downcase == 'transfer-encoding'
-          chunked_response = value.downcase != 'identity'
-        end
-      }
-
       headers.each { |key, value|
         if key.downcase == 'content-length'
-          ## There must be a <tt>Content-Length</tt>, except when the
-          ## +Status+ is 1xx, 204 or 304, in which case there must be none
-          ## given.
+          ## There must not be a <tt>Content-Length</tt> header when the
+          ## +Status+ is 1xx, 204 or 304.
           assert("Content-Length header found in #{status} response, not allowed") {
             not Rack::Utils::STATUS_WITH_NO_ENTITY_BODY.include? status.to_i
           }
 
-          assert('Content-Length header should not be used if body is chunked') {
-            not chunked_response
-          }
-
           bytes = 0
           string_body = true
 
-          @body.each { |part|
-            unless part.kind_of?(String)
-              string_body = false
-              break
-            end
+          if @body.respond_to?(:to_ary)
+            @body.each { |part|
+              unless part.kind_of?(String)
+                string_body = false
+                break
+              end
 
-            bytes += Rack::Utils.bytesize(part)
-          }
-
-          if env["REQUEST_METHOD"] == "HEAD"
-            assert("Response body was given for HEAD request, but should be empty") {
-              bytes == 0
+              bytes += Rack::Utils.bytesize(part)
             }
-          else
-            if string_body
-              assert("Content-Length header was #{value}, but should be #{bytes}") {
-                value == bytes.to_s
+
+            if env["REQUEST_METHOD"] == "HEAD"
+              assert("Response body was given for HEAD request, but should be empty") {
+                bytes == 0
               }
+            else
+              if string_body
+                assert("Content-Length header was #{value}, but should be #{bytes}") {
+                  value == bytes.to_s
+                }
+              end
             end
           end
 
           return
         end
       }
-
-      if [ String, Array ].include?(@body.class) && !chunked_response
-        assert('No Content-Length header found') {
-          Rack::Utils::STATUS_WITH_NO_ENTITY_BODY.include? status.to_i
-        }
-      end
     end
 
     ## === The Body

actionpack/lib/action_controller/vendor/rack-1.0/rack/urlmap.rb

@@ -12,7 +12,11 @@ module Rack
   # first, since they are most specific.
 
   class URLMap
-    def initialize(map)
+    def initialize(map = {})
+      remap(map)
+    end
+
+    def remap(map)
       @mapping = map.map { |location, app|
         if location =~ %r{\Ahttps?://(.*?)(/.*)}
           host, location = $1, $2

actionpack/lib/action_controller/vendor/rack-1.0/rack/utils.rb

@@ -372,7 +372,7 @@ def self.parse_multipart(env)
               data = body
             end
 
-            Utils.normalize_params(params, name, data)
+            Utils.normalize_params(params, name, data) unless data.nil?
 
             break  if buf.empty? || content_length == -1
           }

actionpack/test/controller/request/multipart_params_parsing_test.rb

@@ -103,7 +103,7 @@ def teardown
 
   test "does not create tempfile if no file has been selected" do
     params = parse_multipart('none')
-    assert_equal %w(files submit-name), params.keys.sort
+    assert_equal %w(submit-name), params.keys.sort
     assert_equal 'Larry', params['submit-name']
     assert_equal nil, params['files']
   end