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executable file 277 lines (232 sloc) 9.368 kb
module ActionController
# Subclassing AbstractRequest makes these methods available to the request objects used in production and testing,
# CgiRequest and TestRequest
class AbstractRequest
cattr_accessor :relative_url_root
remove_method :relative_url_root
# Returns the hash of environment variables for this request,
# such as { 'RAILS_ENV' => 'production' }.
attr_reader :env
# Returns both GET and POST parameters in a single hash.
def parameters
@parameters ||= request_parameters.update(query_parameters).update(path_parameters).with_indifferent_access
end
# Returns the HTTP request method as a lowercase symbol (:get, for example). Note, HEAD is returned as :get
# since the two are supposedly to be functionaly equivilent for all purposes except that HEAD won't return a response
# body (which Rails also takes care of elsewhere).
def method
@request_method ||= (!parameters[:_method].blank? && @env['REQUEST_METHOD'] == 'POST') ?
parameters[:_method].to_s.downcase.to_sym :
@env['REQUEST_METHOD'].downcase.to_sym
@request_method == :head ? :get : @request_method
end
# Is this a GET (or HEAD) request? Equivalent to request.method == :get
def get?
method == :get
end
# Is this a POST request? Equivalent to request.method == :post
def post?
method == :post
end
# Is this a PUT request? Equivalent to request.method == :put
def put?
method == :put
end
# Is this a DELETE request? Equivalent to request.method == :delete
def delete?
method == :delete
end
# Is this a HEAD request? HEAD is mapped as :get for request.method, so here we ask the
# REQUEST_METHOD header directly. Thus, for head, both get? and head? will return true.
def head?
@env['REQUEST_METHOD'].downcase.to_sym == :head
end
# Determine whether the body of a HTTP call is URL-encoded (default)
# or matches one of the registered param_parsers.
#
# For backward compatibility, the post format is extracted from the
# X-Post-Data-Format HTTP header if present.
def content_type
@content_type ||=
begin
content_type = @env['CONTENT_TYPE'].to_s.downcase
if x_post_format = @env['HTTP_X_POST_DATA_FORMAT']
case x_post_format.to_s.downcase
when 'yaml'
content_type = 'application/x-yaml'
when 'xml'
content_type = 'application/xml'
end
end
Mime::Type.lookup(content_type)
end
end
# Returns the accepted MIME type for the request
def accepts
@accepts ||=
if @env['HTTP_ACCEPT'].to_s.strip.empty?
[ content_type, Mime::ALL ]
else
Mime::Type.parse(@env['HTTP_ACCEPT'])
end
end
# Returns the Mime type for the format used in the request. If there is no format available, the first of the
# accept types will be used. Examples:
#
# GET /posts/5.xml | request.format => Mime::XML
# GET /posts/5.xhtml | request.format => Mime::HTML
# GET /posts/5 | request.format => request.accepts.first (usually Mime::HTML for browsers)
def format
parameters[:format] ? Mime::Type.lookup_by_extension(parameters[:format]) : accepts.first
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?
not /XMLHttpRequest/i.match(@env['HTTP_X_REQUESTED_WITH']).nil?
end
alias xhr? :xml_http_request?
# Determine 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 before
# falling back to REMOTE_ADDR. HTTP_X_FORWARDED_FOR may be a comma-
# delimited list in the case of multiple chained proxies; the first is
# the originating IP.
def remote_ip
return @env['HTTP_CLIENT_IP'] if @env.include? 'HTTP_CLIENT_IP'
if @env.include? 'HTTP_X_FORWARDED_FOR' then
remote_ips = @env['HTTP_X_FORWARDED_FOR'].split(',').reject do |ip|
ip =~ /^unknown$|^(10|172\.(1[6-9]|2[0-9]|30|31)|192\.168)\./i
end
return remote_ips.first.strip unless remote_ips.empty?
end
@env['REMOTE_ADDR']
end
# Returns the domain part of a host, such as rubyonrails.org in "www.rubyonrails.org". You can specify
# a different <tt>tld_length</tt>, such as 2 to catch rubyonrails.co.uk in "www.rubyonrails.co.uk".
def domain(tld_length = 1)
return nil if !/\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}/.match(host).nil? or host.nil?
host.split('.').last(1 + tld_length).join('.')
end
# Returns all the subdomains as an array, so ["dev", "www"] would be returned for "dev.www.rubyonrails.org".
# You can specify a different <tt>tld_length</tt>, such as 2 to catch ["www"] instead of ["www", "rubyonrails"]
# in "www.rubyonrails.co.uk".
def subdomains(tld_length = 1)
return [] unless host
parts = host.split('.')
parts[0..-(tld_length+2)]
end
# Receive the raw post data.
# This is useful for services such as REST, XMLRPC and SOAP
# which communicate over HTTP POST but don't use the traditional parameter format.
def raw_post
@env['RAW_POST_DATA']
end
# Return the request URI, accounting for server idiosyncracies.
# WEBrick includes the full URL. IIS leaves REQUEST_URI blank.
def request_uri
if uri = @env['REQUEST_URI']
# Remove domain, which webrick puts into the request_uri.
(%r{^\w+\://[^/]+(/.*|$)$} =~ uri) ? $1 : uri
else
# Construct IIS missing REQUEST_URI from SCRIPT_NAME and PATH_INFO.
script_filename = @env['SCRIPT_NAME'].to_s.match(%r{[^/]+$})
uri = @env['PATH_INFO']
uri = uri.sub(/#{script_filename}\//, '') unless script_filename.nil?
unless (env_qs = @env['QUERY_STRING']).nil? || env_qs.empty?
uri << '?' << env_qs
end
@env['REQUEST_URI'] = uri
end
end
# Return '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 interpreted path to requested resource after all the installation directory of this application was taken into account
def path
path = (uri = request_uri) ? uri.split('?').first : ''
# Cut off the path to the installation directory if given
path.sub!(%r/^#{relative_url_root}/, '')
path || ''
end
# Returns the path minus the web server relative installation directory.
# This can be set with the environment variable RAILS_RELATIVE_URL_ROOT.
# It can be automatically extracted for Apache setups. If the server is not
# Apache, this method returns an empty string.
def relative_url_root
@@relative_url_root ||= case
when @env["RAILS_RELATIVE_URL_ROOT"]
@env["RAILS_RELATIVE_URL_ROOT"]
when server_software == 'apache'
@env["SCRIPT_NAME"].to_s.sub(/\/dispatch\.(fcgi|rb|cgi)$/, '')
else
''
end
end
# Returns the port number of this request as an integer.
def port
@port_as_int ||= @env['SERVER_PORT'].to_i
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 a host:port string for this request, such as example.com or
# example.com:8080.
def host_with_port
host + port_string
end
def path_parameters=(parameters) #:nodoc:
@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
#
# Example:
#
# {:action => 'my_action', :controller => 'my_controller'}
def path_parameters
@path_parameters ||= {}
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
#--
# Must be implemented in the concrete request
#++
def query_parameters #:nodoc:
end
def request_parameters #:nodoc:
end
# Returns the host for this request, such as example.com.
def host
end
def cookies #:nodoc:
end
def session #:nodoc:
end
def session=(session) #:nodoc:
@session = session
end
def reset_session #:nodoc:
end
end
end
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