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unfreeze rails 2.3.9

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Reinier Balt 2011-02-04 16:35:00 +01:00
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493
vendor/rails/actionpack/lib/action_controller/request.rb vendored
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require 'tempfile'
require 'stringio'
require 'strscan'
require 'active_support/memoizable'
require 'action_controller/cgi_ext'
module ActionController
class Request < Rack::Request
%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 HTTP_REFERER HTTP_USER_AGENT ].each do |env|
define_method(env.sub(/^HTTP_/n, '').downcase) do
@env[env]
end
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
@request_method ||= HTTP_METHOD_LOOKUP[super] || raise(UnknownHttpMethod, "#{super}, 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
request_method == :head ? :get : request_method
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?
request_method == :post
end
# Is this a PUT request? Equivalent to <tt>request.method == :put</tt>.
def put?
request_method == :put
end
# Is this a DELETE request? Equivalent to <tt>request.method == :delete</tt>.
def delete?
request_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
@headers ||= ActionController::Http::Headers.new(@env)
end
# Returns the content length of the request as an integer.
def content_length
super.to_i
end
# The MIME type of the HTTP request, such as Mime::XML.
#
# For backward compatibility, the post \format is extracted from the
# X-Post-Data-Format HTTP header if present.
def content_type
@content_type ||= begin
if @env['CONTENT_TYPE'] =~ /^([^,\;]*)/
Mime::Type.lookup($1.strip.downcase)
else
nil
end
end
end
def media_type
content_type.to_s
end
# Returns the accepted MIME type for the request.
def accepts
@accepts ||= begin
header = @env['HTTP_ACCEPT'].to_s.strip
if header.empty?
[content_type, Mime::ALL].compact
else
Mime::Type.parse(header)
end
end
end
def if_modified_since
if since = env['HTTP_IF_MODIFIED_SINCE']
Time.rfc2822(since) rescue nil
end
end
def if_none_match
env['HTTP_IF_NONE_MATCH']
end
def not_modified?(modified_at)
if_modified_since && modified_at && if_modified_since >= modified_at
end
def etag_matches?(etag)
if_none_match && if_none_match == etag
end
# Check response freshness (Last-Modified and ETag) against request
# If-Modified-Since and If-None-Match conditions. If both headers are
# supplied, both must match, or the request is not considered fresh.
def fresh?(response)
case
when if_modified_since && if_none_match
not_modified?(response.last_modified) && etag_matches?(response.etag)
when if_modified_since
not_modified?(response.last_modified)
when if_none_match
etag_matches?(response.etag)
else
false
end
end
# Returns the Mime type for the \format used in the request.
#
# GET /posts/5.xml | request.format => Mime::XML
# GET /posts/5.xhtml | request.format => Mime::HTML
# GET /posts/5 | request.format => Mime::HTML or MIME::JS, or request.accepts.first depending on the value of <tt>ActionController::Base.use_accept_header</tt>
def format
@format ||=
if parameters[:format]
Mime::Type.lookup_by_extension(parameters[:format])
elsif ActionController::Base.use_accept_header
accepts.first
elsif xhr?
Mime::Type.lookup_by_extension("js")
else
Mime::Type.lookup_by_extension("html")
end
end
# Sets the \format by string extension, which can be used to force custom formats
# that are not controlled by the extension.
#
# class ApplicationController < ActionController::Base
# before_filter :adjust_format_for_iphone
#
# private
# def adjust_format_for_iphone
# request.format = :iphone if request.env["HTTP_USER_AGENT"][/iPhone/]
# end
# end
def format=(extension)
parameters[:format] = extension.to_s
@format = Mime::Type.lookup_by_extension(parameters[:format])
end
# Returns a symbolized version of the <tt>:format</tt> parameter of the request.
# If no \format is given it returns <tt>:js</tt>for Ajax requests and <tt>:html</tt>
# otherwise.
def template_format
parameter_format = parameters[:format]
if parameter_format
parameter_format
elsif xhr?
:js
else
:html
end
end
def cache_format
parameters[:format]
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
remote_addr_list = @env['REMOTE_ADDR'] && @env['REMOTE_ADDR'].scan(/[^,\s]+/)
unless remote_addr_list.blank?
not_trusted_addrs = remote_addr_list.reject {|addr| addr =~ TRUSTED_PROXIES}
return not_trusted_addrs.first unless not_trusted_addrs.empty?
end
remote_ips = @env['HTTP_X_FORWARDED_FOR'] && @env['HTTP_X_FORWARDED_FOR'].split(',')
if @env.include? 'HTTP_CLIENT_IP'
if ActionController::Base.ip_spoofing_check && remote_ips && !remote_ips.include?(@env['HTTP_CLIENT_IP'])
# We don't know which came from the proxy, and which from the user
raise ActionControllerError.new(<<EOM)
IP spoofing attack?!
HTTP_CLIENT_IP=#{@env['HTTP_CLIENT_IP'].inspect}
HTTP_X_FORWARDED_FOR=#{@env['HTTP_X_FORWARDED_FOR'].inspect}
EOM
end
return @env['HTTP_CLIENT_IP']
end
if remote_ips
while remote_ips.size > 1 && TRUSTED_PROXIES =~ remote_ips.last.strip
remote_ips.pop
end
return remote_ips.last.strip
end
@env['REMOTE_ADDR']
end
# Returns the lowercase name of the HTTP server software.
def server_software
(@env['SERVER_SOFTWARE'] && /^([a-zA-Z]+)/ =~ @env['SERVER_SOFTWARE']) ? $1.downcase : nil
end
# Returns the complete URL used for this request.
def url
protocol + host_with_port + request_uri
end
# Returns 'https://' if this is an SSL request and 'http://' otherwise.
def protocol
ssl? ? 'https://' : 'http://'
end
# Is this an SSL request?
def ssl?
@env['HTTPS'] == 'on' || @env['HTTP_X_FORWARDED_PROTO'] == 'https'
end
# Returns the \host for this request, such as "example.com".
def raw_host_with_port
if forwarded = env["HTTP_X_FORWARDED_HOST"]
forwarded.split(/,\s?/).last
else
env['HTTP_HOST'] || "#{env['SERVER_NAME'] || env['SERVER_ADDR']}:#{env['SERVER_PORT']}"
end
end
# Returns the host for this request, such as example.com.
def host
raw_host_with_port.sub(/:\d+$/, '')
end
# Returns a \host:\port string for this request, such as "example.com" or
# "example.com:8080".
def host_with_port
"#{host}#{port_string}"
end
# Returns the port number of this request as an integer.
def port
if raw_host_with_port =~ /:(\d+)$/
$1.to_i
else
standard_port
end
end
# Returns the standard \port number for this request's protocol.
def standard_port
case protocol
when 'https://' then 443
else 80
end
end
# Returns a \port suffix like ":8080" if the \port number of this request
# is not the default HTTP \port 80 or HTTPS \port 443.
def port_string
port == standard_port ? '' : ":#{port}"
end
# Returns the \domain part of a \host, such as "rubyonrails.org" in "www.rubyonrails.org". You can specify
# a different <tt>tld_length</tt>, such as 2 to catch rubyonrails.co.uk in "www.rubyonrails.co.uk".
def domain(tld_length = 1)
return nil unless named_host?(host)
host.split('.').last(1 + tld_length).join('.')
end
# Returns all the \subdomains as an array, so <tt>["dev", "www"]</tt> would be
# returned for "dev.www.rubyonrails.org". You can specify a different <tt>tld_length</tt>,
# such as 2 to catch <tt>["www"]</tt> instead of <tt>["www", "rubyonrails"]</tt>
# in "www.rubyonrails.co.uk".
def subdomains(tld_length = 1)
return [] unless named_host?(host)
parts = host.split('.')
parts[0..-(tld_length+2)]
end
# Returns the query string, accounting for server idiosyncrasies.
def query_string
@env['QUERY_STRING'].present? ? @env['QUERY_STRING'] : (@env['REQUEST_URI'].split('?', 2)[1] || '')
end
# Returns the request URI, accounting for server idiosyncrasies.
# WEBrick includes the full URL. IIS leaves REQUEST_URI blank.
def request_uri
if uri = @env['REQUEST_URI']
# Remove domain, which webrick puts into the request_uri.
(%r{^\w+\://[^/]+(/.*|$)$} =~ uri) ? $1 : uri
else
# Construct IIS missing REQUEST_URI from SCRIPT_NAME and PATH_INFO.
uri = @env['PATH_INFO'].to_s
if script_filename = @env['SCRIPT_NAME'].to_s.match(%r{[^/]+$})
uri = uri.sub(/#{script_filename}\//, '')
end
env_qs = @env['QUERY_STRING'].to_s
uri += "?#{env_qs}" unless env_qs.empty?
if uri.blank?
@env.delete('REQUEST_URI')
else
@env['REQUEST_URI'] = uri
end
end
end
# Returns the interpreted \path to requested resource after all the installation
# directory of this application was taken into account.
def path
path = request_uri.to_s[/\A[^\?]*/]
path.sub!(/\A#{ActionController::Base.relative_url_root}/, '')
path
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
# Returns both GET and POST \parameters in a single hash.
def parameters
@parameters ||= request_parameters.merge(query_parameters).update(path_parameters).with_indifferent_access
end
alias_method :params, :parameters
def path_parameters=(parameters) #:nodoc:
@env["action_controller.request.path_parameters"] = parameters
@symbolized_path_parameters = @parameters = nil
end
# The same as <tt>path_parameters</tt> with explicitly symbolized keys.
def symbolized_path_parameters
@symbolized_path_parameters ||= path_parameters.symbolize_keys
end
# Returns a hash with the \parameters used to form the \path of the request.
# Returned hash keys are strings:
#
# {'action' => 'my_action', 'controller' => 'my_controller'}
#
# See <tt>symbolized_path_parameters</tt> for symbolized keys.
def path_parameters
@env["action_controller.request.path_parameters"] ||= {}
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
# Override Rack's GET method to support indifferent access
def GET
@env["action_controller.request.query_parameters"] ||= normalize_parameters(super)
end
alias_method :query_parameters, :GET
# Override Rack's POST method to support indifferent access
def POST
@env["action_controller.request.request_parameters"] ||= normalize_parameters(super)
end
alias_method :request_parameters, :POST
def body_stream #:nodoc:
@env['rack.input']
end
def session
@env['rack.session'] ||= {}
end
def session=(session) #:nodoc:
@env['rack.session'] = session
end
def reset_session
session.destroy if session
self.session = {}
end
def session_options
@env['rack.session.options'] ||= {}
end
def session_options=(options)
@env['rack.session.options'] = options
end
def server_port
@env['SERVER_PORT'].to_i
end
private
def named_host?(host)
!(host.nil? || /\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/.match(host))
end
# Convert nested Hashs to HashWithIndifferentAccess and replace
# file upload hashs with UploadedFile objects
def normalize_parameters(value)
case value
when Hash
if value.has_key?(:tempfile)
upload = value[:tempfile]
upload.extend(UploadedFile)
upload.original_path = value[:filename]
upload.content_type = value[:type]
upload
else
h = {}
value.each { |k, v| h[k] = normalize_parameters(v) }
h.with_indifferent_access
end
when Array
value.map { |e| normalize_parameters(e) }
else
value
end
end
end
end