diff options
Diffstat (limited to 'actionpack/lib/action_dispatch/http/response.rb')
| -rw-r--r-- | actionpack/lib/action_dispatch/http/response.rb | 293 |
1 files changed, 207 insertions, 86 deletions
diff --git a/actionpack/lib/action_dispatch/http/response.rb b/actionpack/lib/action_dispatch/http/response.rb index c5939adb9f..516a2af69a 100644 --- a/actionpack/lib/action_dispatch/http/response.rb +++ b/actionpack/lib/action_dispatch/http/response.rb @@ -1,6 +1,7 @@ -require 'active_support/core_ext/module/attribute_accessors' -require 'action_dispatch/http/filter_redirect' -require 'monitor' +require "active_support/core_ext/module/attribute_accessors" +require "action_dispatch/http/filter_redirect" +require "action_dispatch/http/cache" +require "monitor" module ActionDispatch # :nodoc: # Represents an HTTP response generated by a controller action. Use it to @@ -32,45 +33,62 @@ module ActionDispatch # :nodoc: # end # end class Response + class Header < DelegateClass(Hash) # :nodoc: + def initialize(response, header) + @response = response + super(header) + end + + def []=(k, v) + if @response.sending? || @response.sent? + raise ActionDispatch::IllegalStateError, "header already sent" + end + + super + end + + def merge(other) + self.class.new @response, __getobj__.merge(other) + end + + def to_hash + __getobj__.dup + end + end + # The request that the response is responding to. attr_accessor :request # The HTTP status code. attr_reader :status - attr_writer :sending_file - # Get headers for this response. attr_reader :header alias_method :headers, :header - delegate :[], :[]=, :to => :@header - delegate :each, :to => :@stream + delegate :[], :[]=, to: :@header - # Sets the HTTP response's content MIME type. For example, in the controller - # you could write this: - # - # response.content_type = "text/plain" - # - # If a character set has been defined for this response (see charset=) then - # the character set information will also be included in the content type - # information. - attr_reader :content_type - - # The charset of the response. HTML wants to know the encoding of the - # content you're giving them, so we need to send that along. - attr_reader :charset + def each(&block) + sending! + x = @stream.each(&block) + sent! + x + end CONTENT_TYPE = "Content-Type".freeze SET_COOKIE = "Set-Cookie".freeze LOCATION = "Location".freeze - NO_CONTENT_CODES = [204, 304] + NO_CONTENT_CODES = [100, 101, 102, 204, 205, 304] cattr_accessor(:default_charset) { "utf-8" } cattr_accessor(:default_headers) include Rack::Response::Helpers + # Aliasing these off because AD::Http::Cache::Response defines them + alias :_cache_control :cache_control + alias :_cache_control= :cache_control= + include ActionDispatch::Http::FilterRedirect include ActionDispatch::Http::Cache::Response include MonitorMixin @@ -80,20 +98,33 @@ module ActionDispatch # :nodoc: @response = response @buf = buf @closed = false + @str_body = nil + end + + def body + @str_body ||= begin + buf = "" + each { |chunk| buf << chunk } + buf + end end def write(string) raise IOError, "closed stream" if closed? + @str_body = nil @response.commit! @buf.push string end def each(&block) - @response.sending! - x = @buf.each(&block) - @response.sent! - x + if @str_body + return enum_for(:each) unless block_given? + + yield @str_body + else + each_chunk(&block) + end end def abort @@ -107,39 +138,48 @@ module ActionDispatch # :nodoc: def closed? @closed end + + private + + def each_chunk(&block) + @buf.each(&block) # extract into own method + end + end + + def self.create(status = 200, header = {}, body = [], default_headers: self.default_headers) + header = merge_default_headers(header, default_headers) + new status, header, body + end + + def self.merge_default_headers(original, default) + default.respond_to?(:merge) ? default.merge(original) : original end # The underlying body, as a streamable object. attr_reader :stream - def initialize(status = 200, header = {}, body = [], default_headers: self.class.default_headers) + def initialize(status = 200, header = {}, body = []) super() - header = merge_default_headers(header, default_headers) - @header = header + @header = Header.new(self, header) self.body, self.status = body, status - @sending_file = false - @blank = false @cv = new_cond @committed = false @sending = false @sent = false - @content_type = nil - @charset = self.class.default_charset - - if content_type = self[CONTENT_TYPE] - type, charset = content_type.split(/;\s*charset=/) - @content_type = Mime::Type.lookup(type) - @charset = charset || self.class.default_charset - end prepare_cache_control! yield self if block_given? end + def has_header?(key); headers.key? key; end + def get_header(key); headers[key]; end + def set_header(key, v); headers[key] = v; end + def delete_header(key); headers.delete key; end + def await_commit synchronize do @cv.wait_until { @committed } @@ -184,18 +224,55 @@ module ActionDispatch # :nodoc: # Sets the HTTP content type. def content_type=(content_type) - @content_type = content_type.to_s + return unless content_type + new_header_info = parse_content_type(content_type.to_s) + prev_header_info = parsed_content_type_header + charset = new_header_info.charset || prev_header_info.charset + charset ||= self.class.default_charset unless prev_header_info.mime_type + set_content_type new_header_info.mime_type, charset end - # Sets the HTTP character set. + # Sets the HTTP response's content MIME type. For example, in the controller + # you could write this: + # + # response.content_type = "text/plain" + # + # If a character set has been defined for this response (see charset=) then + # the character set information will also be included in the content type + # information. + + def content_type + parsed_content_type_header.mime_type + end + + def sending_file=(v) + if true == v + self.charset = false + end + end + + # Sets the HTTP character set. In case of +nil+ parameter + # it sets the charset to utf-8. + # + # response.charset = 'utf-16' # => 'utf-16' + # response.charset = nil # => 'utf-8' def charset=(charset) - if nil == charset - @charset = self.class.default_charset + header_info = parsed_content_type_header + if false == charset + set_header CONTENT_TYPE, header_info.mime_type else - @charset = charset + content_type = header_info.mime_type + set_content_type content_type, charset || self.class.default_charset end end + # The charset of the response. HTML wants to know the encoding of the + # content you're giving them, so we need to send that along. + def charset + header_info = parsed_content_type_header + header_info.charset || self.class.default_charset + end + # The response code of the request. def response_code @status @@ -222,17 +299,15 @@ module ActionDispatch # :nodoc: # Returns the content of the response as a string. This contains the contents # of any calls to <tt>render</tt>. def body - strings = [] - each { |part| strings << part.to_s } - strings.join + @stream.body end - EMPTY = " " + def write(string) + @stream.write string + end # Allows you to manually set or override the response body. def body=(body) - @blank = true if body == EMPTY - if body.respond_to?(:to_path) @stream = body else @@ -242,31 +317,49 @@ module ActionDispatch # :nodoc: end end - def body_parts - parts = [] - @stream.each { |x| parts << x } - parts - end + # Avoid having to pass an open file handle as the response body. + # Rack::Sendfile will usually intercept the response and uses + # the path directly, so there is no reason to open the file. + class FileBody #:nodoc: + attr_reader :to_path + + def initialize(path) + @to_path = path + end + + def body + File.binread(to_path) + end - def set_cookie(key, value) - ::Rack::Utils.set_cookie_header!(header, key, value) + # Stream the file's contents if Rack::Sendfile isn't present. + def each + File.open(to_path, "rb") do |file| + while chunk = file.read(16384) + yield chunk + end + end + end end - def delete_cookie(key, value={}) - ::Rack::Utils.delete_cookie_header!(header, key, value) + # Send the file stored at +path+ as the response body. + def send_file(path) + commit! + @stream = FileBody.new(path) end - # The location header we'll be responding with. - def location - headers[LOCATION] + def reset_body! + @stream = build_buffer(self, []) end - alias_method :redirect_url, :location - # Sets the location header we'll be responding with. - def location=(url) - headers[LOCATION] = url + def body_parts + parts = [] + @stream.each { |x| parts << x } + parts end + # The location header we'll be responding with. + alias_method :redirect_url, :location + def close stream.close if stream.respond_to?(:close) end @@ -297,10 +390,10 @@ module ActionDispatch # :nodoc: # assert_equal 'AuthorOfNewPage', r.cookies['author'] def cookies cookies = {} - if header = self[SET_COOKIE] + if header = get_header(SET_COOKIE) header = header.split("\n") if header.respond_to?(:to_str) header.each do |cookie| - if pair = cookie.split(';').first + if pair = cookie.split(";").first key, value = pair.split("=").map { |v| Rack::Utils.unescape(v) } cookies[key] = value end @@ -311,17 +404,48 @@ module ActionDispatch # :nodoc: private + ContentTypeHeader = Struct.new :mime_type, :charset + NullContentTypeHeader = ContentTypeHeader.new nil, nil + + def parse_content_type(content_type) + if content_type + type, charset = content_type.split(/;\s*charset=/) + type = nil if type && type.empty? + ContentTypeHeader.new(type, charset) + else + NullContentTypeHeader + end + end + + # Small internal convenience method to get the parsed version of the current + # content type header. + def parsed_content_type_header + parse_content_type(get_header(CONTENT_TYPE)) + end + + def set_content_type(content_type, charset) + type = (content_type || "").dup + type << "; charset=#{charset}" if charset + set_header CONTENT_TYPE, type + end + def before_committed return if committed? assign_default_content_type_and_charset! handle_conditional_get! + handle_no_content! end def before_sending - end + # Normally we've already committed by now, but it's possible + # (e.g., if the controller action tries to read back its own + # response) to get here before that. In that case, we must force + # an "early" commit: we're about to freeze the headers, so this is + # our last chance. + commit! unless committed? - def merge_default_headers(original, default) - default.respond_to?(:merge) ? default.merge(original) : original + headers.freeze + request.commit_cookie_jar! unless committed? end def build_buffer(response, body) @@ -333,18 +457,11 @@ module ActionDispatch # :nodoc: end def assign_default_content_type_and_charset! - return if self[CONTENT_TYPE].present? - - @content_type ||= Mime::HTML - - type = @content_type.to_s.dup - type << "; charset=#{charset}" if append_charset? - - self[CONTENT_TYPE] = type - end + return if content_type - def append_charset? - !@sending_file && @charset != false + ct = parsed_content_type_header + set_content_type(ct.mime_type || Mime[:html].to_s, + ct.charset || self.class.default_charset) end class RackBody @@ -367,7 +484,7 @@ module ActionDispatch # :nodoc: end def respond_to?(method, include_private = false) - if method.to_s == 'to_path' + if method.to_s == "to_path" @response.stream.respond_to?(method) else super @@ -383,11 +500,15 @@ module ActionDispatch # :nodoc: end end - def rack_response(status, header) - header[SET_COOKIE] = header[SET_COOKIE].join("\n") if header[SET_COOKIE].respond_to?(:join) - + def handle_no_content! if NO_CONTENT_CODES.include?(@status) - header.delete CONTENT_TYPE + @header.delete CONTENT_TYPE + @header.delete "Content-Length" + end + end + + def rack_response(status, header) + if NO_CONTENT_CODES.include?(status) [status, header, []] else [status, header, RackBody.new(self)] |