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rails--rails/actionpack/lib/action_dispatch/http/request.rb
2015-01-04 11:58:41 -03:00

351 lines
12 KiB
Ruby

require 'stringio'
require 'active_support/inflector'
require 'action_dispatch/http/headers'
require 'action_controller/metal/exceptions'
require 'rack/request'
require 'action_dispatch/http/cache'
require 'action_dispatch/http/mime_negotiation'
require 'action_dispatch/http/parameters'
require 'action_dispatch/http/filter_parameters'
require 'action_dispatch/http/upload'
require 'action_dispatch/http/url'
require 'active_support/core_ext/array/conversions'
module ActionDispatch
class Request < Rack::Request
include ActionDispatch::Http::Cache::Request
include ActionDispatch::Http::MimeNegotiation
include ActionDispatch::Http::Parameters
include ActionDispatch::Http::FilterParameters
include ActionDispatch::Http::URL
autoload :Session, 'action_dispatch/request/session'
autoload :Utils, 'action_dispatch/request/utils'
LOCALHOST = Regexp.union [/^127\.\d{1,3}\.\d{1,3}\.\d{1,3}$/, /^::1$/, /^0:0:0:0:0:0:0:1(%.*)?$/]
ENV_METHODS = %w[ AUTH_TYPE GATEWAY_INTERFACE
PATH_TRANSLATED REMOTE_HOST
REMOTE_IDENT REMOTE_USER REMOTE_ADDR
SERVER_NAME SERVER_PROTOCOL
HTTP_ACCEPT HTTP_ACCEPT_CHARSET HTTP_ACCEPT_ENCODING
HTTP_ACCEPT_LANGUAGE HTTP_CACHE_CONTROL HTTP_FROM
HTTP_NEGOTIATE HTTP_PRAGMA ].freeze
ENV_METHODS.each do |env|
class_eval <<-METHOD, __FILE__, __LINE__ + 1
def #{env.sub(/^HTTP_/n, '').downcase} # def accept_charset
@env["#{env}"] # @env["HTTP_ACCEPT_CHARSET"]
end # end
METHOD
end
def initialize(env)
super
@method = nil
@request_method = nil
@remote_ip = nil
@original_fullpath = nil
@fullpath = nil
@ip = nil
@uuid = nil
end
def check_path_parameters!
# If any of the path parameters has an invalid encoding then
# raise since it's likely to trigger errors further on.
path_parameters.each do |key, value|
next unless value.respond_to?(:valid_encoding?)
unless value.valid_encoding?
raise ActionController::BadRequest, "Invalid parameter: #{key} => #{value}"
end
end
end
def key?(key)
@env.key?(key)
end
# List of HTTP request methods from the following RFCs:
# Hypertext Transfer Protocol -- HTTP/1.1 (http://www.ietf.org/rfc/rfc2616.txt)
# HTTP Extensions for Distributed Authoring -- WEBDAV (http://www.ietf.org/rfc/rfc2518.txt)
# Versioning Extensions to WebDAV (http://www.ietf.org/rfc/rfc3253.txt)
# Ordered Collections Protocol (WebDAV) (http://www.ietf.org/rfc/rfc3648.txt)
# Web Distributed Authoring and Versioning (WebDAV) Access Control Protocol (http://www.ietf.org/rfc/rfc3744.txt)
# Web Distributed Authoring and Versioning (WebDAV) SEARCH (http://www.ietf.org/rfc/rfc5323.txt)
# Calendar Extensions to WebDAV (http://www.ietf.org/rfc/rfc4791.txt)
# PATCH Method for HTTP (http://www.ietf.org/rfc/rfc5789.txt)
RFC2616 = %w(OPTIONS GET HEAD POST PUT DELETE TRACE CONNECT)
RFC2518 = %w(PROPFIND PROPPATCH MKCOL COPY MOVE LOCK UNLOCK)
RFC3253 = %w(VERSION-CONTROL REPORT CHECKOUT CHECKIN UNCHECKOUT MKWORKSPACE UPDATE LABEL MERGE BASELINE-CONTROL MKACTIVITY)
RFC3648 = %w(ORDERPATCH)
RFC3744 = %w(ACL)
RFC5323 = %w(SEARCH)
RFC4791 = %w(MKCALENDAR)
RFC5789 = %w(PATCH)
HTTP_METHODS = RFC2616 + RFC2518 + RFC3253 + RFC3648 + RFC3744 + RFC5323 + RFC4791 + RFC5789
HTTP_METHOD_LOOKUP = {}
# Populate the HTTP method lookup cache
HTTP_METHODS.each { |method|
HTTP_METHOD_LOOKUP[method] = method.underscore.to_sym
}
# Returns the HTTP \method that the application should see.
# In the case where the \method was overridden by a middleware
# (for instance, if a HEAD request was converted to a GET,
# or if a _method parameter was used to determine the \method
# the application should use), this \method returns the overridden
# value, not the original.
def request_method
@request_method ||= check_method(env["REQUEST_METHOD"])
end
def routes # :nodoc:
env["action_dispatch.routes".freeze]
end
def original_script_name # :nodoc:
env['ORIGINAL_SCRIPT_NAME'.freeze]
end
def engine_script_name(_routes) # :nodoc:
env["ROUTES_#{_routes.object_id}_SCRIPT_NAME"]
end
def request_method=(request_method) #:nodoc:
if check_method(request_method)
@request_method = env["REQUEST_METHOD"] = request_method
end
end
# Returns a symbol form of the #request_method
def request_method_symbol
HTTP_METHOD_LOOKUP[request_method]
end
# Returns the original value of the environment's REQUEST_METHOD,
# even if it was overridden by middleware. See #request_method for
# more information.
def method
@method ||= check_method(env["rack.methodoverride.original_method"] || env['REQUEST_METHOD'])
end
# Returns a symbol form of the #method
def method_symbol
HTTP_METHOD_LOOKUP[method]
end
# Is this a GET (or HEAD) request?
# Equivalent to <tt>request.request_method_symbol == :get</tt>.
def get?
HTTP_METHOD_LOOKUP[request_method] == :get
end
# Is this a POST request?
# Equivalent to <tt>request.request_method_symbol == :post</tt>.
def post?
HTTP_METHOD_LOOKUP[request_method] == :post
end
# Is this a PATCH request?
# Equivalent to <tt>request.request_method == :patch</tt>.
def patch?
HTTP_METHOD_LOOKUP[request_method] == :patch
end
# Is this a PUT request?
# Equivalent to <tt>request.request_method_symbol == :put</tt>.
def put?
HTTP_METHOD_LOOKUP[request_method] == :put
end
# Is this a DELETE request?
# Equivalent to <tt>request.request_method_symbol == :delete</tt>.
def delete?
HTTP_METHOD_LOOKUP[request_method] == :delete
end
# Is this a HEAD request?
# Equivalent to <tt>request.request_method_symbol == :head</tt>.
def head?
HTTP_METHOD_LOOKUP[request_method] == :head
end
# Provides access to the request's HTTP headers, for example:
#
# request.headers["Content-Type"] # => "text/plain"
def headers
Http::Headers.new(@env)
end
# Returns a +String+ with the last requested path including their params.
#
# # get '/foo'
# request.original_fullpath # => '/foo'
#
# # get '/foo?bar'
# request.original_fullpath # => '/foo?bar'
def original_fullpath
@original_fullpath ||= (env["ORIGINAL_FULLPATH"] || fullpath)
end
# Returns the +String+ full path including params of the last URL requested.
#
# # get "/articles"
# request.fullpath # => "/articles"
#
# # get "/articles?page=2"
# request.fullpath # => "/articles?page=2"
def fullpath
@fullpath ||= super
end
# Returns the original request URL as a +String+.
#
# # get "/articles?page=2"
# request.original_url # => "http://www.example.com/articles?page=2"
def original_url
base_url + original_fullpath
end
# The +String+ MIME type of the request.
#
# # get "/articles"
# request.media_type # => "application/x-www-form-urlencoded"
def media_type
content_mime_type.to_s
end
# Returns the content length of the request as an integer.
def content_length
super.to_i
end
# Returns true if the "X-Requested-With" header contains "XMLHttpRequest"
# (case-insensitive), which may need to be manually added depending on the
# choice of JavaScript libraries and frameworks.
def xml_http_request?
@env['HTTP_X_REQUESTED_WITH'] =~ /XMLHttpRequest/i
end
alias :xhr? :xml_http_request?
def ip
@ip ||= super
end
# Originating IP address, usually set by the RemoteIp middleware.
def remote_ip
@remote_ip ||= (@env["action_dispatch.remote_ip"] || ip).to_s
end
# Returns the unique request id, which is based on either the X-Request-Id header that can
# be generated by a firewall, load balancer, or web server or by the RequestId middleware
# (which sets the action_dispatch.request_id environment variable).
#
# This unique ID is useful for tracing a request from end-to-end as part of logging or debugging.
# This relies on the rack variable set by the ActionDispatch::RequestId middleware.
def uuid
@uuid ||= env["action_dispatch.request_id"]
end
# Returns the lowercase name of the HTTP server software.
def server_software
(@env['SERVER_SOFTWARE'] && /^([a-zA-Z]+)/ =~ @env['SERVER_SOFTWARE']) ? $1.downcase : nil
end
# Read the request \body. This is useful for web services that need to
# work with raw requests directly.
def raw_post
unless @env.include? 'RAW_POST_DATA'
raw_post_body = body
@env['RAW_POST_DATA'] = raw_post_body.read(content_length)
raw_post_body.rewind if raw_post_body.respond_to?(:rewind)
end
@env['RAW_POST_DATA']
end
# The request body is an IO input stream. If the RAW_POST_DATA environment
# variable is already set, wrap it in a StringIO.
def body
if raw_post = @env['RAW_POST_DATA']
raw_post.force_encoding(Encoding::BINARY)
StringIO.new(raw_post)
else
@env['rack.input']
end
end
def form_data?
FORM_DATA_MEDIA_TYPES.include?(content_mime_type.to_s)
end
def body_stream #:nodoc:
@env['rack.input']
end
# TODO This should be broken apart into AD::Request::Session and probably
# be included by the session middleware.
def reset_session
if session && session.respond_to?(:destroy)
session.destroy
else
self.session = {}
end
@env['action_dispatch.request.flash_hash'] = nil
end
def session=(session) #:nodoc:
Session.set @env, session
end
def session_options=(options)
Session::Options.set @env, options
end
# Override Rack's GET method to support indifferent access
def GET
@env["action_dispatch.request.query_parameters"] ||= Utils.deep_munge(normalize_encode_params(super || {}))
rescue Rack::Utils::ParameterTypeError, Rack::Utils::InvalidParameterError => e
raise ActionController::BadRequest.new(:query, e)
end
alias :query_parameters :GET
# Override Rack's POST method to support indifferent access
def POST
@env["action_dispatch.request.request_parameters"] ||= Utils.deep_munge(normalize_encode_params(super || {}))
rescue Rack::Utils::ParameterTypeError, Rack::Utils::InvalidParameterError => e
raise ActionController::BadRequest.new(:request, e)
end
alias :request_parameters :POST
# Returns the authorization header regardless of whether it was specified directly or through one of the
# proxy alternatives.
def authorization
@env['HTTP_AUTHORIZATION'] ||
@env['X-HTTP_AUTHORIZATION'] ||
@env['X_HTTP_AUTHORIZATION'] ||
@env['REDIRECT_X_HTTP_AUTHORIZATION']
end
# True if the request came from localhost, 127.0.0.1.
def local?
LOCALHOST =~ remote_addr && LOCALHOST =~ remote_ip
end
protected
def parse_query(qs)
Utils.deep_munge(super)
end
private
def check_method(name)
HTTP_METHOD_LOOKUP[name] || raise(ActionController::UnknownHttpMethod, "#{name}, accepted HTTP methods are #{HTTP_METHODS[0...-1].join(', ')}, and #{HTTP_METHODS[-1]}")
name
end
end
end