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require 'tempfile'
require 'stringio'
require 'strscan'
require 'active_support/core_ext/hash/indifferent_access'
require 'active_support/core_ext/string/access'
require 'action_dispatch/http/headers'
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::Upload
include ActionDispatch::Http::URL
%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 ].each do |env|
class_eval <<-METHOD, __FILE__, __LINE__ + 1
def #{env.sub(/^HTTP_/n, '').downcase}
@env["#{env}"]
end
METHOD
end
def self.new(env)
if request = env["action_dispatch.request"] && request.instance_of?(self)
return request
end
super
end
def key?(key)
@env.key?(key)
end
HTTP_METHODS = %w(get head put post delete options)
HTTP_METHOD_LOOKUP = HTTP_METHODS.inject({}) { |h, m| h[m] = h[m.upcase] = m.to_sym; h }
# Returns the true HTTP request \method as a lowercase symbol, such as
# <tt>:get</tt>. If the request \method is not listed in the HTTP_METHODS
# constant above, an UnknownHttpMethod exception is raised.
def request_method
method = env["rack.methodoverride.original_method"] || env["REQUEST_METHOD"]
HTTP_METHOD_LOOKUP[method] || raise(ActionController::UnknownHttpMethod, "#{method}, accepted HTTP methods are #{HTTP_METHODS.to_sentence(:locale => :en)}")
end
# Returns the HTTP request \method used for action processing as a
# lowercase symbol, such as <tt>:post</tt>. (Unlike #request_method, this
# method returns <tt>:get</tt> for a HEAD request because the two are
# functionally equivalent from the application's perspective.)
def method
method = env["REQUEST_METHOD"]
HTTP_METHOD_LOOKUP[method] || raise(ActionController::UnknownHttpMethod, "#{method}, accepted HTTP methods are #{HTTP_METHODS.to_sentence(:locale => :en)}")
end
# Is this a GET (or HEAD) request? Equivalent to <tt>request.method == :get</tt>.
def get?
method == :get
end
# Is this a POST request? Equivalent to <tt>request.method == :post</tt>.
def post?
method == :post
end
# Is this a PUT request? Equivalent to <tt>request.method == :put</tt>.
def put?
method == :put
end
# Is this a DELETE request? Equivalent to <tt>request.method == :delete</tt>.
def delete?
method == :delete
end
# Is this a HEAD request? Since <tt>request.method</tt> sees HEAD as <tt>:get</tt>,
# this \method checks the actual HTTP \method directly.
def head?
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
def forgery_whitelisted?
method == :get || xhr? || content_type.nil? || !content_type.verify_request?
end
def media_type
content_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 request's "X-Requested-With" header contains
# "XMLHttpRequest". (The Prototype Javascript library sends this header with
# every Ajax request.)
def xml_http_request?
!(@env['HTTP_X_REQUESTED_WITH'] !~ /XMLHttpRequest/i)
end
alias :xhr? :xml_http_request?
# Which IP addresses are "trusted proxies" that can be stripped from
# the right-hand-side of X-Forwarded-For
TRUSTED_PROXIES = /^127\.0\.0\.1$|^(10|172\.(1[6-9]|2[0-9]|30|31)|192\.168)\./i
# Determines originating IP address. REMOTE_ADDR is the standard
# but will fail if the user is behind a proxy. HTTP_CLIENT_IP and/or
# HTTP_X_FORWARDED_FOR are set by proxies so check for these if
# REMOTE_ADDR is a proxy. HTTP_X_FORWARDED_FOR may be a comma-
# delimited list in the case of multiple chained proxies; the last
# address which is not trusted is the originating IP.
def remote_ip
(@env["action_dispatch.remote_ip"] || ip).to_s
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'
@env['RAW_POST_DATA'] = body.read(@env['CONTENT_LENGTH'].to_i)
body.rewind if 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) if raw_post.respond_to?(:force_encoding)
StringIO.new(raw_post)
else
@env['rack.input']
end
end
def form_data?
FORM_DATA_MEDIA_TYPES.include?(content_type.to_s)
end
def body_stream #:nodoc:
@env['rack.input']
end
def reset_session
self.session_options.delete(:id)
self.session = {}
end
def session=(session) #:nodoc:
@env['rack.session'] = session
end
def session_options=(options)
@env['rack.session.options'] = options
end
# Override Rack's GET method to support indifferent access
def GET
@env["action_dispatch.request.query_parameters"] ||= normalize_parameters(super)
end
alias :query_parameters :GET
# Override Rack's POST method to support indifferent access
def POST
@env["action_dispatch.request.request_parameters"] ||= normalize_parameters(super)
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
end
end
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