Class: ActionController::Request

Inherits:
Rack::Request
  • Object
show all
Defined in:
lib/action_controller/request.rb

Direct Known Subclasses

TestRequest

Constant Summary collapse

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 }
TRUSTED_PROXIES =

Which IP addresses are “trusted proxies” that can be stripped from the right-hand-side of X-Forwarded-For

/^127\.0\.0\.1$|^(10|172\.(1[6-9]|2[0-9]|30|31)|192\.168)\./i

Instance Method Summary collapse

Instance Method Details

#accepts ⇒ Object

Returns the accepted MIME type for the request.



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# File 'lib/action_controller/request.rb', line 103

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

#body ⇒ Object

The request body is an IO input stream. If the RAW_POST_DATA environment variable is already set, wrap it in a StringIO.



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# File 'lib/action_controller/request.rb', line 411

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

#body_stream ⇒ Object

:nodoc:



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# File 'lib/action_controller/request.rb', line 436

def body_stream #:nodoc:
  @env['rack.input']
end

#cache_format ⇒ Object 



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# File 'lib/action_controller/request.rb', line 199

def cache_format
  parameters[:format]
end

#content_length ⇒ Object

Returns the content length of the request as an integer.



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# File 'lib/action_controller/request.rb', line 80

def content_length
  super.to_i
end

#content_type ⇒ Object

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.



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# File 'lib/action_controller/request.rb', line 88

def content_type
  @content_type ||= begin
    if @env['CONTENT_TYPE'] =~ /^([^,\;]*)/
      Mime::Type.lookup($1.strip.downcase)
    else
      nil
    end
  end
end

#delete? ⇒ Boolean

Is this a DELETE request? Equivalent to request.method == :delete.

Returns:

  • (Boolean) 


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# File 'lib/action_controller/request.rb', line 62

def delete?
  request_method == :delete
end

#domain(tld_length = 1) ⇒ Object

Returns the domain part of a host, such as “rubyonrails.org” in “www.rubyonrails.org”. You can specify a different tld_length, such as 2 to catch rubyonrails.co.uk in “www.rubyonrails.co.uk”.



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# File 'lib/action_controller/request.rb', line 319

def domain(tld_length = 1)
  return nil unless named_host?(host)

  host.split('.').last(1 + tld_length).join('.')
end

#etag_matches?(etag) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/action_controller/request.rb', line 129

def etag_matches?(etag)
  if_none_match && if_none_match == etag
end

#form_data? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/action_controller/request.rb', line 420

def form_data?
  FORM_DATA_MEDIA_TYPES.include?(content_type.to_s)
end

#format ⇒ Object

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>



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# File 'lib/action_controller/request.rb', line 154

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

#format=(extension) ⇒ Object

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



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# File 'lib/action_controller/request.rb', line 179

def format=(extension)
  parameters[:format] = extension.to_s
  @format = Mime::Type.lookup_by_extension(parameters[:format])
end

#fresh?(response) ⇒ Boolean

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.

Returns:

  • (Boolean) 


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# File 'lib/action_controller/request.rb', line 136

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

#GET ⇒ Object Also known as: query_parameters

Override Rack’s GET method to support indifferent access



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# File 'lib/action_controller/request.rb', line 425

def GET
  @env["action_controller.request.query_parameters"] ||= normalize_parameters(super)
end

#get? ⇒ Boolean

Is this a GET (or HEAD) request? Equivalent to request.method == :get.

Returns:

  • (Boolean) 


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# File 'lib/action_controller/request.rb', line 47

def get?
  method == :get
end

#head? ⇒ Boolean

Is this a HEAD request? Since request.method sees HEAD as :get, this method checks the actual HTTP method directly.

Returns:

  • (Boolean) 


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# File 'lib/action_controller/request.rb', line 68

def head?
  request_method == :head
end

#headers ⇒ Object

Provides access to the request’s HTTP headers, for example:

request.headers["Content-Type"] # => "text/plain"



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# File 'lib/action_controller/request.rb', line 75

def headers
  @headers ||= ActionController::Http::Headers.new(@env)
end

#host ⇒ Object

Returns the host for this request, such as example.com.



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# File 'lib/action_controller/request.rb', line 284

def host
  raw_host_with_port.sub(/:\d+$/, '')
end

#host_with_port ⇒ Object

Returns a host:port string for this request, such as “example.com” or “example.com:8080”.



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# File 'lib/action_controller/request.rb', line 290

def host_with_port
  "#{host}#{port_string}"
end

#if_modified_since ⇒ Object 



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# File 'lib/action_controller/request.rb', line 115

def if_modified_since
  if since = env['HTTP_IF_MODIFIED_SINCE']
    Time.rfc2822(since) rescue nil
  end
end

#if_none_match ⇒ Object 



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# File 'lib/action_controller/request.rb', line 121

def if_none_match
  env['HTTP_IF_NONE_MATCH']
end

#key?(key) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/action_controller/request.rb', line 24

def key?(key)
  @env.key?(key)
end

#media_type ⇒ Object 



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# File 'lib/action_controller/request.rb', line 98

def media_type
  content_type.to_s
end

#method ⇒ Object

Returns the HTTP request method used for action processing as a lowercase symbol, such as :post. (Unlike #request_method, this method returns :get for a HEAD request because the two are functionally equivalent from the application’s perspective.)



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# File 'lib/action_controller/request.rb', line 42

def method
  request_method == :head ? :get : request_method
end

#not_modified?(modified_at) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/action_controller/request.rb', line 125

def not_modified?(modified_at)
  if_modified_since && modified_at && if_modified_since >= modified_at
end

#parameters ⇒ Object Also known as: params

Returns both GET and POST parameters in a single hash.



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# File 'lib/action_controller/request.rb', line 384

def parameters
  @parameters ||= request_parameters.merge(query_parameters).update(path_parameters).with_indifferent_access
end

#path ⇒ Object

Returns the interpreted path to requested resource after all the installation directory of this application was taken into account.



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# File 'lib/action_controller/request.rb', line 367

def path
  path = request_uri.to_s[/\A[^\?]*/]
  path.sub!(/\A#{ActionController::Base.relative_url_root}/, '')
  path
end

#path_parameters ⇒ Object

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 symbolized_path_parameters for symbolized keys.



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# File 'lib/action_controller/request.rb', line 405

def path_parameters
  @env["action_controller.request.path_parameters"] ||= {}
end

#path_parameters=(parameters) ⇒ Object

:nodoc:



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# File 'lib/action_controller/request.rb', line 389

def path_parameters=(parameters) #:nodoc:
  @env["action_controller.request.path_parameters"] = parameters
  @symbolized_path_parameters = @parameters = nil
end

#port ⇒ Object

Returns the port number of this request as an integer.



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# File 'lib/action_controller/request.rb', line 295

def port
  if raw_host_with_port =~ /:(\d+)$/
    $1.to_i
  else
    standard_port
  end
end

#port_string ⇒ Object

Returns a port suffix like “:8080” if the port number of this request is not the default HTTP port 80 or HTTPS port 443.



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# File 'lib/action_controller/request.rb', line 313

def port_string
  port == standard_port ? '' : ":#{port}"
end

#POST ⇒ Object Also known as: request_parameters

Override Rack’s POST method to support indifferent access



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# File 'lib/action_controller/request.rb', line 431

def POST
  @env["action_controller.request.request_parameters"] ||= normalize_parameters(super)
end

#post? ⇒ Boolean

Is this a POST request? Equivalent to request.method == :post.

Returns:

  • (Boolean) 


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# File 'lib/action_controller/request.rb', line 52

def post?
  request_method == :post
end

#protocol ⇒ Object

Returns ‘https://’ if this is an SSL request and ‘http://’ otherwise.



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# File 'lib/action_controller/request.rb', line 265

def protocol
  ssl? ? 'https://' : 'http://'
end

#put? ⇒ Boolean

Is this a PUT request? Equivalent to request.method == :put.

Returns:

  • (Boolean) 


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# File 'lib/action_controller/request.rb', line 57

def put?
  request_method == :put
end

#query_string ⇒ Object

Returns the query string, accounting for server idiosyncrasies.



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# File 'lib/action_controller/request.rb', line 336

def query_string
  @env['QUERY_STRING'].present? ? @env['QUERY_STRING'] : (@env['REQUEST_URI'].split('?', 2)[1] || '')
end

#raw_host_with_port ⇒ Object

Returns the host for this request, such as “example.com”.



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# File 'lib/action_controller/request.rb', line 275

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

#raw_post ⇒ Object

Read the request body. This is useful for web services that need to work with raw requests directly.



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# File 'lib/action_controller/request.rb', line 375

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

#remote_ip ⇒ Object

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.



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# File 'lib/action_controller/request.rb', line 221

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

#request_method ⇒ Object

Returns the true HTTP request method as a lowercase symbol, such as :get. If the request method is not listed in the HTTP_METHODS constant above, an UnknownHttpMethod exception is raised.



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# File 'lib/action_controller/request.rb', line 34

def request_method
  @request_method ||= HTTP_METHOD_LOOKUP[super] || raise(UnknownHttpMethod, "#{super}, accepted HTTP methods are #{HTTP_METHODS.to_sentence(:locale => :en)}")
end

#request_uri ⇒ Object

Returns the request URI, accounting for server idiosyncrasies. WEBrick includes the full URL. IIS leaves REQUEST_URI blank.



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# File 'lib/action_controller/request.rb', line 342

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

#reset_session ⇒ Object 



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# File 'lib/action_controller/request.rb', line 448

def reset_session
  @env['rack.session.options'].delete(:id)
  @env['rack.session'] = {}
end

#server_port ⇒ Object 



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# File 'lib/action_controller/request.rb', line 461

def server_port
  @env['SERVER_PORT'].to_i
end

#server_software ⇒ Object

Returns the lowercase name of the HTTP server software.



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# File 'lib/action_controller/request.rb', line 255

def server_software
  (@env['SERVER_SOFTWARE'] && /^([a-zA-Z]+)/ =~ @env['SERVER_SOFTWARE']) ? $1.downcase : nil
end

#session ⇒ Object 



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# File 'lib/action_controller/request.rb', line 440

def session
  @env['rack.session'] ||= {}
end

#session=(session) ⇒ Object

:nodoc:



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# File 'lib/action_controller/request.rb', line 444

def session=(session) #:nodoc:
  @env['rack.session'] = session
end

#session_options ⇒ Object 



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# File 'lib/action_controller/request.rb', line 453

def session_options
  @env['rack.session.options'] ||= {}
end

#session_options=(options) ⇒ Object 



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# File 'lib/action_controller/request.rb', line 457

def session_options=(options)
  @env['rack.session.options'] = options
end

#ssl? ⇒ Boolean

Is this an SSL request?

Returns:

  • (Boolean) 


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# File 'lib/action_controller/request.rb', line 270

def ssl?
  @env['HTTPS'] == 'on' || @env['HTTP_X_FORWARDED_PROTO'] == 'https'
end

#standard_port ⇒ Object

Returns the standard port number for this request’s protocol.



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# File 'lib/action_controller/request.rb', line 304

def standard_port
  case protocol
    when 'https://' then 443
    else 80
  end
end

#subdomains(tld_length = 1) ⇒ Object

Returns all the subdomains as an array, so ["dev", "www"] would be returned for “dev.www.rubyonrails.org”. You can specify a different tld_length, such as 2 to catch ["www"] instead of ["www", "rubyonrails"] in “www.rubyonrails.co.uk”.



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# File 'lib/action_controller/request.rb', line 329

def subdomains(tld_length = 1)
  return [] unless named_host?(host)
  parts = host.split('.')
  parts[0..-(tld_length+2)]
end

#symbolized_path_parameters ⇒ Object

The same as path_parameters with explicitly symbolized keys.



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# File 'lib/action_controller/request.rb', line 395

def symbolized_path_parameters
  @symbolized_path_parameters ||= path_parameters.symbolize_keys
end

#template_format ⇒ Object

Returns a symbolized version of the :format parameter of the request. If no format is given it returns :jsfor Ajax requests and :html otherwise.



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# File 'lib/action_controller/request.rb', line 187

def template_format
  parameter_format = parameters[:format]

  if parameter_format
    parameter_format
  elsif xhr?
    :js
  else
    :html
  end
end

#url ⇒ Object

Returns the complete URL used for this request.



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# File 'lib/action_controller/request.rb', line 260

def url
  protocol + host_with_port + request_uri
end

#xml_http_request? ⇒ Boolean Also known as: xhr?

Returns true if the request’s “X-Requested-With” header contains “XMLHttpRequest”. (The Prototype Javascript library sends this header with every Ajax request.)

Returns:

  • (Boolean) 


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# File 'lib/action_controller/request.rb', line 206

def xml_http_request?
  !(@env['HTTP_X_REQUESTED_WITH'] !~ /XMLHttpRequest/i)
end