/usr/share/ada/adainclude/aws/aws-headers-set.adb is in libaws2.10.2-dev 2.10.2-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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-- Ada Web Server --
-- --
-- Copyright (C) 2000-2011, AdaCore --
-- --
-- This library is free software; you can redistribute it and/or modify --
-- it under the terms of the GNU General Public License as published by --
-- the Free Software Foundation; either version 2 of the License, 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. See the GNU --
-- General Public License for more details. --
-- --
-- You should have received a copy of the GNU General Public License --
-- along with this library; if not, write to the Free Software Foundation, --
-- Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. --
-- --
------------------------------------------------------------------------------
with Ada.Characters.Latin_1;
with Ada.Strings.Fixed;
with Ada.Strings.Maps;
with Ada.Text_IO;
with AWS.Containers.Tables.Set;
with AWS.Net.Buffered;
package body AWS.Headers.Set is
use Ada;
use AWS.Containers;
use type Strings.Maps.Character_Set;
Printable_Set : constant Strings.Maps.Character_Set :=
Strings.Maps.To_Set
(Strings.Maps.Character_Range'
(Low => ' ',
High => Character'Val (126)));
-- This is RFC2616 CHAR except CTL
-- CHAR = <any US-ASCII character (octets 0 - 127)>
-- CTL = <any US-ASCII control character
-- (octets 0 - 31) and DEL (127)>
RFC2616_Separator_Set : constant Strings.Maps.Character_Set :=
Strings.Maps.To_Set
(" ()<>@,;:\""/[]?={}" & Characters.Latin_1.HT);
RFC2616_Token_Set : constant Strings.Maps.Character_Set :=
Printable_Set - RFC2616_Separator_Set;
subtype P_List is Tables.Table_Type;
Debug_Flag : Boolean := False;
-- Set to True to output debug information to the standard output
---------
-- Add --
---------
procedure Add (Headers : in out List; Name, Value : String) is
begin
Tables.Set.Add (P_List (Headers), Name, Value);
end Add;
-----------
-- Debug --
-----------
procedure Debug (Activate : Boolean) is
begin
Debug_Flag := Activate;
end Debug;
----------
-- Read --
----------
procedure Read (Socket : Net.Socket_Type'Class; Headers : in out List) is
procedure Parse_Header_Lines (Line : String);
-- Parse the Line eventually catenated with the next line if it is a
-- continuation line see [RFC 2616 - 4.2].
------------------------
-- Parse_Header_Lines --
------------------------
procedure Parse_Header_Lines (Line : String) is
End_Of_Message : constant String := "";
begin
if Line = End_Of_Message then
return;
else
declare
use Ada.Strings;
Next_Line : constant String :=
Net.Buffered.Get_Line (Socket);
Delimiter_Index : Natural;
begin
if Next_Line /= End_Of_Message
and then
(Next_Line (Next_Line'First) = ' '
or else Next_Line (Next_Line'First) = ASCII.HT)
then
-- Continuing value on the next line. Header fields can be
-- extended over multiple lines by preceding each extra
-- line with at least one SP or HT.
Parse_Header_Lines (Line & Next_Line);
else
if Debug_Flag then
Text_IO.Put_Line ('>' & Line);
end if;
-- Put name and value to the container separately
Delimiter_Index := Fixed.Index
(Source => Line,
Set => RFC2616_Token_Set,
Test => Outside);
if Delimiter_Index = 0 -- No delimiter
or else Delimiter_Index = Line'First -- Empty name
or else Line (Delimiter_Index) /= ':' -- Wrong separator
then
-- No delimiter, this is not a valid Header Line
raise Format_Error with Line;
end if;
Add (Headers,
Name => Line (Line'First .. Delimiter_Index - 1),
Value => Fixed.Trim
(Line (Delimiter_Index + 1 .. Line'Last),
Side => Both));
-- Parse next header line
Parse_Header_Lines (Next_Line);
end if;
end;
end if;
end Parse_Header_Lines;
begin
Reset (Headers);
Parse_Header_Lines (Net.Buffered.Get_Line (Socket));
end Read;
-----------
-- Reset --
-----------
procedure Reset (Headers : in out List) is
begin
Tables.Set.Reset (P_List (Headers));
Tables.Set.Case_Sensitive (P_List (Headers), False);
end Reset;
------------
-- Update --
------------
procedure Update
(Headers : in out List;
Name : String;
Value : String;
N : Positive := 1) is
begin
Tables.Set.Update (P_List (Headers), Name, Value, N);
end Update;
end AWS.Headers.Set;
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