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-- Ada Web Server --
-- --
-- Copyright (C) 2000-2014, AdaCore --
-- --
-- This library is free software; you can redistribute it and/or modify --
-- it under terms of the GNU General Public License as published by the --
-- Free Software Foundation; either version 3, or (at your option) any --
-- later version. This library is distributed in the hope that it will be --
-- useful, but WITHOUT ANY WARRANTY; without even the implied warranty of --
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. --
-- --
-- As a special exception under Section 7 of GPL version 3, you are --
-- granted additional permissions described in the GCC Runtime Library --
-- Exception, version 3.1, as published by the Free Software Foundation. --
-- --
-- You should have received a copy of the GNU General Public License and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
-- As a special exception, if other files instantiate generics from this --
-- unit, or you link this unit with other files to produce an executable, --
-- this unit does not by itself cause the resulting executable to be --
-- covered by the GNU General Public License. This exception does not --
-- however invalidate any other reasons why the executable file might be --
-- covered by the GNU Public License. --
------------------------------------------------------------------------------
pragma Ada_2012;
-- This package is used to keep the HTTP protocol status. Client can then
-- request the status for various values like the requested URI, the
-- Content_Length and the Session ID for example.
with Ada.Calendar;
with Ada.Real_Time;
with Ada.Streams;
with Ada.Strings.Unbounded;
with AWS.Attachments;
with AWS.Headers;
with AWS.Messages;
with AWS.Net;
with AWS.Parameters;
with AWS.Session;
with AWS.URL;
private with AWS.Containers.Memory_Streams;
package AWS.Status is
use Ada;
use Ada.Streams;
use Ada.Strings.Unbounded;
type Data is private;
type Request_Method is
(OPTIONS, GET, HEAD, POST, PUT, DELETE, TRACE, CONNECT, EXTENSION_METHOD);
-- EXTENSION_METHOD indicates that a method is an extension-method,
-- ie none of the eight method tokens predefined in the RFC 2616.
type Authorization_Type is (None, Basic, Digest);
------------------
-- Request-Line --
------------------
function Method (D : Data) return Request_Method with Inline;
-- Returns the request method
function Method (D : Data) return String with Inline;
-- Returns the request method as a String. Useful to get the method String
-- for an extension-method, ie a method that is not already predefined
-- in the RFC 2616.
function URI (D : Data) return String with Inline;
-- Returns the requested resource
function URI (D : Data) return URL.Object with Inline;
-- As above but return an URL object
function URL (D : Data) return String with Inline;
-- Returns the requested URL
function Parameters (D : Data) return Parameters.List with Inline;
-- Returns the list of parameters for the request. This list can be empty
-- if there was no form or URL parameters.
function Parameter
(D : Data; Name : String; N : Positive := 1) return String with Inline;
function HTTP_Version (D : Data) return String with Inline;
-- Returns the HTTP version used by the client
function Request_Time (D : Data) return Calendar.Time with Inline;
-- Returns the time of the request
function Request_Time (D : Data) return Real_Time.Time with Inline;
------------
-- Header --
------------
function Header (D : Data) return Headers.List with Inline;
-- Returns the list of header lines for the request
function Accept_Encoding (D : Data) return String with Inline;
-- Get the value for "Accept-Encoding:" header
function Connection (D : Data) return String with Inline;
-- Get the value for "Connection:" header
function Content_Length (D : Data) return Natural with Inline;
-- Get the value for "Content-Length:" header, this is the number of
-- bytes in the message body.
function Content_Type (D : Data) return String with Inline;
-- Get value for "Content-Type:" header
function Expect (D : Data) return String with Inline;
-- Get value for "Expect:" header
function Host (D : Data) return String with Inline;
-- Get value for "Host:" header
function If_Modified_Since (D : Data) return String with Inline;
-- Get value for "If-Modified-Since:" header
function Keep_Alive (D : Data) return Boolean with Inline;
-- Returns the flag if the current HTTP connection is keep-alive
function User_Agent (D : Data) return String with Inline;
-- Get value for "User-Agent:" header
function Referer (D : Data) return String with Inline;
-- Get value for "Referer:" header
function Cache_Control (D : Data) return Messages.Cache_Option
with Inline;
-- Get value for "Cache-Control:" header
function Cache_Control (D : Data) return Messages.Cache_Data
with Inline;
-- Returns the cache control data specified for the request
function Is_Supported
(D : Data;
Encoding : Messages.Content_Encoding) return Boolean;
-- Returns True if the content encoding scheme is sported by the client
function Preferred_Coding (D : Data) return Messages.Content_Encoding;
-- Returns supported by AWS coding preferred by client from the
-- Accept-Coding header.
function Upgrade (D : Data) return String with Inline;
-- Get value for "Upgrade:" header
function Sec_WebSocket_Key (D : Data) return String with Inline;
-- Get value for "Sec-WebSocket-Key:" header
-------------------------------------------
-- Cross-Origin Resource Sharing Headers --
-------------------------------------------
function Origin (D : Data) return String with Inline;
-- Get value for "Origin:" header
function Access_Control_Request_Headers (D : Data) return String
with Inline;
-- Get value for "Access-Control-Request-Headers:" header
function Access_Control_Request_Method (D : Data) return String with Inline;
-- Get value for "Access-Control-Request-Method:" header
----------------
-- Connection --
----------------
function Peername (D : Data) return String with Inline;
-- Returns the address of the peer (the IP address of the client computer)
function Socket (D : Data) return Net.Socket_Type'Class with Inline;
-- Returns the socket used to transfer data between the client and
-- server.
function Socket (D : Data) return Net.Socket_Access with Inline;
-- Returns the socket used to transfer data between the client and
-- server. Use Socket_Access to avoid memory allocation if we would need
-- socket access further.
----------
-- Data --
----------
function Is_Body_Uploaded (D : Data) return Boolean with Inline;
-- Returns True if the message body has been uploaded and False if not.
-- The reason beeing that the body size is above Upload_Size_Limit.
-- User can upload the file using AWS.Server.Get_Message_Body, the size
-- beeing returned by Content_Length.
function Multipart_Boundary (D : Data) return String with Inline;
-- Get value for the boundary part in "Content-Type: ...; boundary=..."
-- parameter. This is a string that will be used to separate each chunk of
-- data in a multipart message.
function Binary_Data (D : Data) return Stream_Element_Array with Inline;
-- Returns the binary data message content.
-- Note that only the root part of a multipart/related message is returned.
function Binary_Data (D : Data) return Unbounded_String;
-- Returns the binary data message content in a Unbounded_String
-- Note that only the root part of a multipart/related message is returned.
function Binary_Size (D : Data) return Stream_Element_Offset with Inline;
-- Returns size of the binary data message content
procedure Reset_Body_Index (D : Data) with Inline;
-- Reset message body read position to the start
procedure Read_Body
(D : Data;
Buffer : out Stream_Element_Array;
Last : out Stream_Element_Offset)
with Inline;
-- Read a chunk of data from message body and put them into Buffer.
-- Last is the index of the last item returned in Buffer.
function End_Of_Body (D : Data) return Boolean with Inline;
-- Returns true if there is no more data to read from the message body
-----------------
-- Attachments --
-----------------
function Attachments (D : Data) return AWS.Attachments.List with Inline;
-- Returns the list of Attachments for the request
-------------
-- Session --
-------------
function Has_Session (D : Data) return Boolean with Inline;
-- Returns true if a session ID has been received
function Session (D : Data) return Session.Id with Inline;
-- Returns the Session ID for the request. Raises Constraint_Error if
-- server's session support not activated.
function Session_Created (D : Data) return Boolean;
-- Returns True if session was just created and is going to be sent to
-- client.
function Session_Timed_Out (D : Data) return Boolean;
-- Returns True if a previous session was timeout (even if a new session
-- has been created).
----------
-- SOAP --
----------
function Is_SOAP (D : Data) return Boolean with Inline;
-- Returns True if it is a SOAP request. In this case SOAPAction return
-- the SOAPAction header and Payload returns the XML SOAP Payload message.
function SOAPAction (D : Data) return String with Inline;
-- Get value for "SOAPAction:" parameter. This is a standard header to
-- support SOAP over HTTP protocol.
function Payload (D : Data) return String with Inline;
-- Returns the XML Payload message. XML payload is the actual SOAP
-- request. This is the root part of multipart/related SOAP message.
function Payload (D : Data) return Unbounded_String;
-- Returns the XML Payload message. XML payload is the actual SOAP
-- request. This is the root part of multipart/related SOAP message.
-----------
-- HTTPS --
-----------
function Check_Digest
(D : Data; Password : String) return Messages.Status_Code;
-- This function is used by the digest authentication to check if the
-- client password and authentication parameters are correct.
-- The password is not transferred between the client and the server,
-- the server check that the client knows the right password using the
-- MD5 checksum.
-- Returns Messages.S200 in case of successful authentication,
-- Messages.S400 in case of wrong authentication request
-- (RFC 2617 3.2.2, 3.2.2.5),
-- and Messages.S401 in case of authentication error.
function Check_Digest (D : Data; Password : String) return Boolean;
-- The same as above, but do not distinguish wrong requests and
-- authentication errors.
function Authorization_Mode (D : Data) return Authorization_Type
with Inline;
-- Returns the type of the "Authorization:" parameter
function Authorization_Name (D : Data) return String with Inline;
-- Returns "username" value in the "Authorization:" parameter
function Authorization_URI (D : Data) return String with Inline;
-- Returns "uri" value in the "Authorization:" parameter
-- Note, it could differ from HTTP URI field, for example Mozilla browser
-- places http parameters to the authorization uri field.
function Authorization_Password (D : Data) return String with Inline;
-- Returns "password" value in the "Authorization:" parameter
function Authorization_Realm (D : Data) return String with Inline;
-- Returns "realm" value in the "Authorization:" parameter
function Authorization_Nonce (D : Data) return String with Inline;
-- Returns "nonce" value in the "Authorization:" parameter
function Authorization_NC (D : Data) return String with Inline;
-- Returns "nc" value in the "Authorization:" parameter
function Authorization_CNonce (D : Data) return String with Inline;
-- Returns "cnonce" value in the "Authorization:" parameter
function Authorization_QOP (D : Data) return String with Inline;
-- Retruns "qop" value in the "Authorization:" parameter
function Authorization_Response (D : Data) return String with Inline;
-- Returns "response" value in the "Authorization:" parameter
function Authorization_Tail (D : Data) return String with Inline;
-- Returns precalculated part of digest composed of
-- Nonce, NC, CNonce, QOP, Method, URI authorization fields.
-- To build a full authorization response you can use:
--
-- MD5.Digest
-- (MD5.Digest (Username & ':' & Realm & ':' & Password)
-- & Authorization_Tail);
--
-- This method can be used to avoid sending a password over the network.
private
type Memory_Stream_Access is access Containers.Memory_Streams.Stream_Type;
type Data is record
-- Connection info
Socket : Net.Socket_Access;
Peername : Unbounded_String;
-- Request
Header : Headers.List;
Query : Unbounded_String;
Method : Request_Method := GET;
Method_String : Unbounded_String;
HTTP_Version : Unbounded_String;
URI : aliased AWS.URL.Object;
Calendar_Time : Calendar.Time;
Monotonic_Time : Real_Time.Time;
Binary_Data : Memory_Stream_Access;
Uploaded : Boolean := False;
Content_Length : Natural := 0;
Keep_Alive : Boolean;
File_Up_To_Date : Boolean := False;
Attachments : AWS.Attachments.List;
-- SOAP
SOAP_Action : Boolean := False;
-- True if SOAPAction is set in the header list
-- Authentication
Auth_Mode : Authorization_Type := None;
Auth_Name : Unbounded_String; -- for Basic and Digest
Auth_Password : Unbounded_String; -- for Basic
Auth_Realm : Unbounded_String; -- for Digest
Auth_Nonce : Unbounded_String; -- for Digest
Auth_NC : Unbounded_String; -- for Digest
Auth_CNonce : Unbounded_String; -- for Digest
Auth_QOP : Unbounded_String; -- for Digest
Auth_URI : Unbounded_String; -- for Digest
Auth_Response : Unbounded_String; -- for Digest
-- Session
Session_Id : AWS.Session.Id := AWS.Session.No_Session;
Session_Created : Boolean := False;
Session_Timed_Out : Boolean := False;
end record;
end AWS.Status;
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