/usr/share/ada/adainclude/aws/aws-messages.adb is in libaws3.3.2-dev 3.3.2-2.
This file is owned by root:root, with mode 0o644.
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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. --
------------------------------------------------------------------------------
with Ada.Directories;
with AWS.Headers.Values;
with AWS.Utils;
package body AWS.Messages is
subtype Status_Code_Image is String (1 .. 3);
S100_Message : aliased constant String := "Continue";
S101_Message : aliased constant String := "Switching Protocols";
S102_Message : aliased constant String := "Processing";
-- Introduced in the WebDAV HTTP extension, refer to RFC2518
S200_Message : aliased constant String := "OK";
S201_Message : aliased constant String := "Created";
S202_Message : aliased constant String := "Accepted";
S203_Message : aliased constant String := "Non-Authoritative Information";
S204_Message : aliased constant String := "No Content";
S205_Message : aliased constant String := "Reset Content";
S206_Message : aliased constant String := "Partial Content";
S207_Message : aliased constant String := "Multi-Status";
-- Introduced in the WebDAV HTTP extension, refer to RFC4918
S300_Message : aliased constant String := "Multiple Choices";
S301_Message : aliased constant String := "Moved Permanently";
S302_Message : aliased constant String := "Found";
S303_Message : aliased constant String := "See Other";
S304_Message : aliased constant String := "Not Modified";
S305_Message : aliased constant String := "Use Proxy";
S307_Message : aliased constant String := "Temporary Redirect";
S400_Message : aliased constant String := "Bad Request";
S401_Message : aliased constant String := "Unauthorized";
S402_Message : aliased constant String := "Payment Required";
S403_Message : aliased constant String := "Forbidden";
S404_Message : aliased constant String := "Not Found";
S405_Message : aliased constant String := "Method Not Allowed";
S406_Message : aliased constant String := "Not Acceptable";
S407_Message : aliased constant String := "Proxy Authentication Required";
S408_Message : aliased constant String := "Request Time-out";
S409_Message : aliased constant String := "Conflict";
S410_Message : aliased constant String := "Gone";
S411_Message : aliased constant String := "Length Required";
S412_Message : aliased constant String := "Precondition Failed";
S413_Message : aliased constant String := "Request Entity Too Large";
S414_Message : aliased constant String := "Request-URI Too Large";
S415_Message : aliased constant String := "Unsupported Media Type";
S416_Message : aliased constant String := "Requestd range not satisfiable";
S417_Message : aliased constant String := "Expectation Failed";
S422_Message : aliased constant String := "Unprocessable Entity";
S423_Message : aliased constant String := "Locked";
S424_Message : aliased constant String := "Failed Dependency";
-- Introduced in the WebDAV HTTP extension, refer to RFC4918
S500_Message : aliased constant String := "Internal Server Error";
S501_Message : aliased constant String := "Not Implemented";
S502_Message : aliased constant String := "Bad Gateway";
S503_Message : aliased constant String := "Service Unavailable";
S504_Message : aliased constant String := "Gateway Time-out";
S505_Message : aliased constant String := "HTTP Version not supported";
S507_Message : aliased constant String := "Insufficient Storage";
-- Introduced in the WebDAV HTTP extension, refer to RFC4918
type Status_Data is record
Code : Status_Code_Image;
Reason_Phrase : not null access constant String;
end record;
Status_Messages : constant array (Status_Code) of Status_Data :=
(S100 => ("100", S100_Message'Access),
S101 => ("101", S101_Message'Access),
S102 => ("102", S102_Message'Access),
S200 => ("200", S200_Message'Access),
S201 => ("201", S201_Message'Access),
S202 => ("202", S202_Message'Access),
S203 => ("203", S203_Message'Access),
S204 => ("204", S204_Message'Access),
S205 => ("205", S205_Message'Access),
S206 => ("206", S206_Message'Access),
S207 => ("207", S207_Message'Access),
S300 => ("300", S300_Message'Access),
S301 => ("301", S301_Message'Access),
S302 => ("302", S302_Message'Access),
S303 => ("303", S303_Message'Access),
S304 => ("304", S304_Message'Access),
S305 => ("305", S305_Message'Access),
S307 => ("307", S307_Message'Access),
S400 => ("400", S400_Message'Access),
S401 => ("401", S401_Message'Access),
S402 => ("402", S402_Message'Access),
S403 => ("403", S403_Message'Access),
S404 => ("404", S404_Message'Access),
S405 => ("405", S405_Message'Access),
S406 => ("406", S406_Message'Access),
S407 => ("407", S407_Message'Access),
S408 => ("408", S408_Message'Access),
S409 => ("409", S409_Message'Access),
S410 => ("410", S410_Message'Access),
S411 => ("411", S411_Message'Access),
S412 => ("412", S412_Message'Access),
S413 => ("413", S413_Message'Access),
S414 => ("414", S414_Message'Access),
S415 => ("415", S415_Message'Access),
S416 => ("416", S416_Message'Access),
S417 => ("417", S417_Message'Access),
S422 => ("422", S422_Message'Access),
S423 => ("422", S423_Message'Access),
S424 => ("422", S424_Message'Access),
S500 => ("500", S500_Message'Access),
S501 => ("501", S501_Message'Access),
S502 => ("502", S502_Message'Access),
S503 => ("503", S503_Message'Access),
S504 => ("504", S504_Message'Access),
S505 => ("505", S505_Message'Access),
S507 => ("507", S507_Message'Access));
Month_Name : constant array (Calendar.Month_Number) of String (1 .. 3) :=
("Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec");
HD : constant String := ": ";
-- Header delimiter with space for well formatting
---------------------
-- Accept_Encoding --
---------------------
function Accept_Encoding (Encoding : String) return String is
begin
return Accept_Encoding_Token & HD & Encoding;
end Accept_Encoding;
---------------------
-- Accept_Language --
---------------------
function Accept_Language (Mode : String) return String is
begin
return Accept_Language_Token & HD & Mode;
end Accept_Language;
-----------------
-- Accept_Type --
-----------------
function Accept_Type (Mode : String) return String is
begin
return Accept_Token & HD & Mode;
end Accept_Type;
-------------------
-- Authorization --
-------------------
function Authorization (Mode, Password : String) return String is
begin
return Authorization_Token & HD & Mode & ' ' & Password;
end Authorization;
-------------------
-- Cache_Control --
-------------------
function Cache_Control (Option : Cache_Option) return String is
begin
return Cache_Control_Token & HD & String (Option);
end Cache_Control;
function Cache_Control (Data : Cache_Data) return String is
begin
return Cache_Control (To_Cache_Option (Data));
end Cache_Control;
----------------
-- Connection --
----------------
function Connection (Mode : String) return String is
begin
return Connection_Token & HD & Mode;
end Connection;
-------------------------
-- Content_Disposition --
-------------------------
function Content_Disposition
(Format, Name, Filename : String) return String is
begin
if Filename = "" then
return Content_Disposition_Token & HD & Format
& "; name=""" & Name & '"';
else
return Content_Disposition_Token & HD & Format
& "; name=""" & Name & """; filename="""
& Directories.Simple_Name (Filename) & '"';
end if;
end Content_Disposition;
--------------------
-- Content_Length --
--------------------
function Content_Length (Size : Stream_Element_Offset) return String is
begin
return Content_Length_Token & ':' & Stream_Element_Offset'Image (Size);
end Content_Length;
------------------
-- Content_Type --
------------------
function Content_Type
(Format : String; Boundary : String := "") return String is
begin
if Boundary = "" then
return Content_Type_Token & HD & Format;
else
return Content_Type_Token & HD & Format
& "; boundary=""" & Boundary & '"';
end if;
end Content_Type;
------------
-- Cookie --
------------
function Cookie (Value : String) return String is
begin
return Cookie_Token & HD & Value;
end Cookie;
-----------------
-- Create_ETag --
-----------------
function Create_ETag
(Name : String; Weak : Boolean := False) return ETag_Value
is
ET : constant ETag_Value := '"' & ETag_Value (Name) & '"';
begin
if Weak then
return "W/" & ET;
else
return ET;
end if;
end Create_ETag;
----------------
-- Data_Range --
----------------
function Data_Range (Value : String) return String is
begin
return Range_Token & HD & Value;
end Data_Range;
----------
-- ETag --
----------
function ETag (Value : ETag_Value) return String is
begin
return ETag_Token & HD & String (Value);
end ETag;
-------------
-- Expires --
-------------
function Expires (Date : Calendar.Time) return String is
begin
return Expires_Token & HD & To_HTTP_Date (Date);
end Expires;
----------
-- Host --
----------
function Host (Name : String) return String is
begin
return Host_Token & HD & Name;
end Host;
-----------
-- Image --
-----------
function Image (S : Status_Code) return String is
begin
return Status_Messages (S).Code;
end Image;
-------------------
-- Last_Modified --
-------------------
function Last_Modified (Date : Calendar.Time) return String is
begin
return Last_Modified_Token & HD & To_HTTP_Date (Date);
end Last_Modified;
--------------
-- Location --
--------------
function Location (URL : String) return String is
begin
return Location_Token & HD & URL;
end Location;
-------------------------
-- Proxy_Authorization --
-------------------------
function Proxy_Authorization (Mode, Password : String) return String is
begin
return Proxy_Authorization_Token & HD & Mode & ' ' & Password;
end Proxy_Authorization;
----------------------
-- Proxy_Connection --
----------------------
function Proxy_Connection (Mode : String) return String is
begin
return Proxy_Connection_Token & HD & Mode;
end Proxy_Connection;
-------------------
-- Reason_Phrase --
-------------------
function Reason_Phrase (S : Status_Code) return String is
begin
return Status_Messages (S).Reason_Phrase.all;
end Reason_Phrase;
--------------------------
-- Sec_WebSocket_Accept --
--------------------------
function Sec_WebSocket_Accept (Key : String) return String is
begin
return Sec_WebSocket_Accept_Token & HD & Key;
end Sec_WebSocket_Accept;
----------------
-- SOAPAction --
----------------
function SOAPAction (URI : String) return String is
begin
return SOAPAction_Token & HD & '"' & URI & '"';
end SOAPAction;
-----------------
-- Status_Line --
-----------------
function Status_Line
(Code : Status_Code;
Reason_Phrase : String := "") return String is
begin
return HTTP_Version & ' '
& Status_Messages (Code).Code & ' '
& (if Reason_Phrase = ""
then Status_Messages (Code).Reason_Phrase.all
else Reason_Phrase);
end Status_Line;
-------------------
-- To_Cache_Data --
-------------------
function To_Cache_Data
(Kind : Cache_Kind; Value : Cache_Option) return Cache_Data
is
use AWS.Headers;
Result : Cache_Data (Kind);
procedure Simple_Value (Item : String; Quit : in out Boolean);
-- Receives un-named value
procedure Named_Value (Name, Value : String; Quit : in out Boolean);
-- Receives named value
-----------------
-- Named_Value --
-----------------
procedure Named_Value (Name, Value : String; Quit : in out Boolean) is
begin
Quit := False;
if Utils.Is_Number (Value) then
if Name = "max-stale" then
Result.Max_Stale := Delta_Seconds'Value (Value);
elsif Name = "min-fresh" then
Result.Min_Fresh := Delta_Seconds'Value (Value);
elsif Name = "max-age" then
Result.Max_Age := Delta_Seconds'Value (Value);
elsif Name = "s-maxage" then
Result.S_Max_Age := Delta_Seconds'Value (Value);
end if;
else
if Name = "private" then
Result.Private_Field := To_Unbounded_String (Value);
end if;
end if;
end Named_Value;
-----------
-- Value --
-----------
procedure Simple_Value (Item : String; Quit : in out Boolean) is
begin
Quit := False;
if Item = "no-cache" then
Result.No_Cache := True;
elsif Item = "no-store" then
Result.No_Store := True;
elsif Item = "no-transform" then
Result.No_Transform := True;
elsif Item = "only-if-cached" then
Result.Only_If_Cached := True;
elsif Item = "public" then
Result.Public := True;
elsif Item = "private" then
Result.Private_Field := All_Private;
elsif Item = "must-revalidate" then
Result.Must_Revalidate := True;
elsif Item = "proxy-revalidate" then
Result.Proxy_Revalidate := True;
end if;
end Simple_Value;
procedure Parse is new Headers.Values.Parse (Simple_Value, Named_Value);
begin
Parse (String (Value));
return Result;
end To_Cache_Data;
---------------------
-- To_Cache_Option --
---------------------
function To_Cache_Option (Data : Cache_Data) return Cache_Option is
Result : Unbounded_String;
begin
if Data.No_Cache then
Utils.Append_With_Sep (Result, "no-cache");
end if;
if Data.No_Store then
Utils.Append_With_Sep (Result, "no-store");
end if;
if Data.No_Transform then
Utils.Append_With_Sep (Result, "no-transform");
end if;
if Data.Max_Age /= Unset then
Utils.Append_With_Sep
(Result, "max-age=" & Utils.Image (Integer (Data.Max_Age)));
end if;
case Data.CKind is
when Request =>
if Data.Max_Stale /= Unset then
if Data.Max_Stale = Any_Max_Stale then
Utils.Append_With_Sep (Result, "max-stale");
else
Utils.Append_With_Sep
(Result, "max-stale="
& Utils.Image (Integer (Data.Max_Stale)));
end if;
end if;
if Data.Min_Fresh /= Unset then
Utils.Append_With_Sep
(Result, "min-fresh="
& Utils.Image (Integer (Data.Min_Fresh)));
end if;
if Data.Only_If_Cached then
Utils.Append_With_Sep (Result, "only-if-cached");
end if;
when Response =>
if Data.S_Max_Age /= Unset then
Utils.Append_With_Sep
(Result, "s-maxage="
& Utils.Image (Integer (Data.S_Max_Age)));
end if;
if Data.Public then
Utils.Append_With_Sep (Result, "public");
end if;
if Data.Private_Field /= Private_Unset then
if Data.Private_Field = All_Private then
Utils.Append_With_Sep (Result, "private");
else
Utils.Append_With_Sep
(Result, "private=" & To_String (Data.Private_Field));
end if;
end if;
if Data.Must_Revalidate then
Utils.Append_With_Sep (Result, "must-revalidate");
end if;
if Data.Proxy_Revalidate then
Utils.Append_With_Sep (Result, "proxy-revalidate");
end if;
end case;
return Cache_Option (To_String (Result));
end To_Cache_Option;
------------------
-- To_HTTP_Date --
------------------
function To_HTTP_Date (Time : Calendar.Time) return String is
function Truncation (S : Calendar.Day_Duration) return Natural;
-- returns the integral value of S
function Image (V : Natural) return String;
-- returns V image without the leading space and with leading zero if
-- only one digit
function Weekday (Date : Calendar.Time) return String;
-- returns the weekday as a 3 letters string for the Date
-----------
-- Image --
-----------
function Image (V : Natural) return String is
V_Image : constant String := Natural'Image (V);
begin
if V_Image'Length = 2 then
-- only one digit add a leading zero
return '0' & V_Image (2 .. V_Image'Last);
else
return V_Image (2 .. V_Image'Last);
end if;
end Image;
----------------
-- Truncation --
----------------
function Truncation (S : Calendar.Day_Duration) return Natural is
begin
if S = 0.0 then
return 0;
else
return Natural (S - 0.5);
end if;
end Truncation;
-------------
-- Weekday --
-------------
function Weekday (Date : Calendar.Time) return String is
Day_Names : constant array (Integer range 0 .. 6) of String (1 .. 3)
:= ("Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat");
C : Integer;
Y : Integer := Calendar.Year (Date);
M : Integer := Calendar.Month (Date);
D : constant Integer := Calendar.Day (Date);
begin
-- Calculate day of week by using Zeller's congruence
if M < 3 then
Y := Y - 1;
M := M + 10;
else
M := M - 2;
end if;
C := Y / 100; -- first two digits of Year
Y := Y mod 100; -- last two digits of Year
return Day_Names (((26 * M - 2) / 10
+ D
+ Y
+ Y / 4
+ C / 4
- 2 * C) mod 7);
end Weekday;
Day : constant String := Image (Calendar.Day (Time));
Mon : constant String := Month_Name (Calendar.Month (Time));
Year : constant String := Image (Calendar.Year (Time));
Secs : constant Natural := Truncation (Calendar.Seconds (Time));
Tmp : constant Natural := Secs mod 3600;
H : constant String := Image (Secs / 3600);
M : constant String := Image (Tmp / 60);
S : constant String := Image (Tmp mod 60);
begin
return Weekday (Time) & ", " & Day & ' ' & Mon & ' ' & Year & ' '
& H & ':' & M & ':' & S & " GMT";
end To_HTTP_Date;
-------------
-- To_Time --
-------------
function To_Time (HTTP_Date : String) return Calendar.Time is
function Month_Number
(Month_Name : String) return Calendar.Month_Number;
-- returns the month number given a 3 letter month name
F : constant Positive := HTTP_Date'First;
------------------
-- Month_Number --
------------------
function Month_Number
(Month_Name : String) return Calendar.Month_Number is
begin
for I in Calendar.Month_Number loop
if Month_Name = Messages.Month_Name (I) then
return I;
end if;
end loop;
raise Constraint_Error
with "Month_Number: Wrong Month name (" & Month_Name & ')';
end Month_Number;
begin
return Calendar.Time_Of
(Year => Calendar.Year_Number'Value (HTTP_Date (F + 12 .. F + 15)),
Month => Month_Number (HTTP_Date (F + 8 .. F + 10)),
Day => Calendar.Day_Number'Value (HTTP_Date (F + 5 .. F + 6)),
Seconds => Calendar.Day_Duration
(Natural'Value (HTTP_Date (F + 17 .. F + 18)) * 3600
+ Natural'Value (HTTP_Date (F + 20 .. F + 21)) * 60
+ Natural'Value (HTTP_Date (F + 23 .. F + 24))));
end To_Time;
-----------------------
-- Transfer_Encoding --
-----------------------
function Transfer_Encoding (Encoding : String) return String is
begin
return Transfer_Encoding_Token & HD & Encoding;
end Transfer_Encoding;
----------------
-- User_Agent --
----------------
function User_Agent (Name : String) return String is
begin
return User_Agent_Token & HD & Name;
end User_Agent;
----------------------
-- Www_Authenticate --
----------------------
function WWW_Authenticate (Realm : String) return String is
begin
return WWW_Authenticate_Token & HD & "Basic realm=""" & Realm & """";
end WWW_Authenticate;
function WWW_Authenticate
(Realm, Nonce : String; Stale : Boolean) return String is
begin
return WWW_Authenticate_Token & HD
& "Digest qop=""auth"", realm=""" & Realm
& """, stale=""" & Boolean'Image (Stale)
& """, nonce=""" & Nonce & """";
end WWW_Authenticate;
end AWS.Messages;
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