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4539 | -- --
-- package Copyright (c) Dmitry A. Kazakov --
-- GNAT.Sockets.Connection_State_Machine. Luebeck --
-- HTTP_Server Winter, 2013 --
-- Implementation --
-- Last revision : 20:46 27 Aug 2020 --
-- --
-- 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. --
-- --
-- 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.IO_Exceptions; use Ada.IO_Exceptions;
with Ada.Characters.Handling; use Ada.Characters.Handling;
with Ada.Tags; use Ada.Tags;
with GNAT.SHA1; use GNAT.SHA1;
with Interfaces; use Interfaces;
with Strings_Edit; use Strings_Edit;
with Strings_Edit.Base64; use Strings_Edit.Base64;
with Strings_Edit.Floats; use Strings_Edit.Floats;
with Strings_Edit.Integers; use Strings_Edit.Integers;
with Strings_Edit.Quoted; use Strings_Edit.Quoted;
with Ada.Unchecked_Conversion;
with Ada.Unchecked_Deallocation;
with GNAT.Sockets.Connection_State_Machine.Big_Endian.Unsigneds;
with Strings_Edit.UTF8;
package body GNAT.Sockets.Connection_State_Machine.HTTP_Server is
use CGI_Keys;
use Content_Ranges;
use GNAT.Sockets.Server.Stream_Element_Offset_Edit;
Block_Size : constant := 1024;
Default_Response : constant String := "Not implemented";
Bad_Request_Response : constant String := "Bad request";
function From_Digest (Data : Message_Digest) return String is
Result : String (1..Data'Length / 2);
Pointer : Integer := Data'First;
begin
for Index in Result'Range loop
Result (Index) :=
Character'Val
( Strings_Edit.Integers.Value
( Source => Data (Pointer..Pointer + 1),
Base => 16
) );
Pointer := Pointer + 2;
end loop;
return Result;
end From_Digest;
function To_String (Data : Stream_Element_Array) return String is
Result : String (1..Data'Length);
begin
for Index in Data'Range loop
Result (Integer (Index - Data'First + 1)) :=
Character'Val (Data (Index));
end loop;
return Result;
end To_String;
function Accumulated_Body_Length (Client : HTTP_Client)
return Stream_Element_Count is
begin
if Client.Body_Content.First = null then
return 0;
else
return Client.Body_Content.Length;
end if;
end Accumulated_Body_Length;
procedure Accumulate_Body
( Client : in out HTTP_Client;
Content : String
) is
begin
Accumulate_Body (Client, From_String (Content));
end Accumulate_Body;
procedure Accumulate_Body
( Client : in out HTTP_Client'Class;
Content : Content_Item_Ptr
) is
begin
if Client.Body_Content.First = null then
Client.Body_Content.First := Content;
Client.Body_Content.Length := Content.Length;
else
if Client.Body_Content.Last /= null then
Client.Body_Content.Last.Next := Content;
end if;
Client.Body_Content.Length :=
Client.Body_Content.Length + Content.Length;
end if;
Client.Body_Content.Last := Content;
end Accumulate_Body;
procedure Accumulate_Body
( Client : in out HTTP_Client;
Content : access Stream_Element_Array
) is
type Content_Item_Ptr is access Content_Item;
for Content_Item_Ptr'Storage_Pool use Client.Pool;
Ptr : Content_Item_Ptr;
begin
Ptr := new Content_Item'
( Kind => Stream_Elements_Pointer,
Length => Content'Length,
Next => null,
First => Content'First,
Data_Ptr => Content.all'Unchecked_Access
);
Accumulate_Body (Client, Ptr.all'Unchecked_Access);
end Accumulate_Body;
procedure Accumulate_Body
( Client : in out HTTP_Client;
Content : access String
) is
type Content_Item_Ptr is access Content_Item;
for Content_Item_Ptr'Storage_Pool use Client.Pool;
Ptr : Content_Item_Ptr;
begin
Ptr := new Content_Item'
( Kind => String_Pointer,
Length => Content'Length,
Next => null,
First => Stream_Element_Offset (Content'First),
Text_Ptr => Content.all'Unchecked_Access
);
Accumulate_Body (Client, Ptr.all'Unchecked_Access);
end Accumulate_Body;
procedure Accumulate_Body
( Client : in out HTTP_Client;
Content : Stream_Element_Array
) is
type Content_Item_Ptr is access Content_Item;
for Content_Item_Ptr'Storage_Pool use Client.Pool;
Ptr : Content_Item_Ptr;
begin
if Content'Length > 0 then
Ptr := new Content_Item'
( Kind => Literal_Value,
Length => Content'Length,
Next => null,
First => 1,
Data => Content
);
Accumulate_Body (Client, Ptr.all'Unchecked_Access);
end if;
end Accumulate_Body;
procedure Body_Error
( Client : in out HTTP_Client;
Stream : in out Root_Stream_Type'Class;
Error : Exception_Occurrence
) is
begin
Raise_Exception (Data_Error'Identity, Exception_Message (Error));
end Body_Error;
procedure Body_Error
( Client : in out HTTP_Client;
Content : in out Content_Destination'Class;
Error : Exception_Occurrence
) is
begin
Raise_Exception (Data_Error'Identity, Exception_Message (Error));
end Body_Error;
procedure Body_Received
( Client : in out HTTP_Client;
Stream : in out Root_Stream_Type'Class
) is
begin
null;
end Body_Received;
procedure Body_Received
( Client : in out HTTP_Client;
Content : in out Content_Destination'Class
) is
begin
null;
end Body_Received;
procedure Body_Sent
( Client : in out HTTP_Client;
Stream : in out Root_Stream_Type'Class;
Get : Boolean
) is
begin
null;
end Body_Sent;
procedure Body_Error
( Client : in out HTTP_Client;
Content : in out CGI_Keys.Table'Class;
Error : Exception_Occurrence
) is
begin
Raise_Exception (Data_Error'Identity, Exception_Message (Error));
end Body_Error;
procedure Body_Received
( Client : in out HTTP_Client;
Content : in out CGI_Keys.Table'Class
) is
begin
null;
end Body_Received;
function Check_WebSocket
( Client : access HTTP_Client
) return Boolean is
This : HTTP_Client renames Client.all;
begin
if 0 = (This.Connection and Connection_Upgrade) then
Reply_Text
( Client.all,
400,
Bad_Request_Response,
"Connection field is not 'upgrade'"
);
return False;
end if;
begin
case Integer'
( Value (Get_Header (This, Sec_WebSocket_Version_Header))
) is
when 13 =>
null;
when others =>
Send_Status_Line (This, 426, "Upgrade required");
Send_Date (This);
Send_Content_Type (This, "text/plain");
Send (This, "Sec-WebSocket-Version: 13" & CRLF);
Send_Connection (This, False);
Send_Body (This, "Unsupported WebSocket version");
return False;
end case;
exception
when Error : others =>
Reply_Text
( This,
400,
Bad_Request_Response,
"WebSocket version error: " & Exception_Message (Error)
);
return False;
end;
case Get_Header (This, Sec_WebSocket_Key_Header)'Length is
when 16 =>
null;
when 0 =>
Reply_Text
( This,
400,
Bad_Request_Response,
"Missing WebSocket key"
);
return False;
when others =>
Reply_Text
( This,
400,
Bad_Request_Response,
"Broken WebSocket key, must be 16-bytes long"
);
return False;
end case;
-- declare -- Origin checks
-- Host : String := Get_Header (This, Host_Header);
-- Checked : Boolean := False;
-- begin
-- if Host /= "localhost" then
-- declare
-- Server : Host_Entry_Type := Get_Host_By_Name (Host_Name);
-- Origin : Host_Entry_Type := Get_Host_By_Name (Host);
-- begin
-- Verify : for I in 1..Addresses_Length (Origin) loop
-- declare
-- Address : Inet_Addr_Type := Addresses (Origin, I);
-- begin
-- for J in 1..Addresses_Length (Server) loop
-- if Addresses (Server, J) = Address then
-- Checked := True;
-- exit Verify;
-- end if;
-- end loop;
-- end;
-- end loop Verify;
-- if not Checked then
-- Reply_Text
-- ( This,
-- 400,
-- Bad_Request_Response,
-- "Host does not contain server's name"
-- );
-- return False;
-- end if;
-- end;
-- end if;
-- exception
-- when others =>
-- if not Checked then
-- Reply_Text
-- ( This,
-- 400,
-- Bad_Request_Response,
-- "Host does not contain server's name"
-- );
-- return False;
-- end if;
-- end;
return True;
end Check_WebSocket;
procedure Cleanup_Body_Part (Client : in out HTTP_Client'Class) is
begin
if Client.Part_Mark /= null then
declare
type Part_Ptr is access String;
for Part_Ptr'Storage_Pool use Client.Pool;
function To_Part_Ptr is
new Ada.Unchecked_Conversion (Text_Ptr, Part_Ptr);
procedure Free is
new Ada.Unchecked_Deallocation (String, Part_Ptr);
Ptr : Part_Ptr := To_Part_Ptr (Client.Part_Mark);
begin
Free (Ptr);
Client.Multipart := (others => null);
Client.Part_Mark := null;
end;
end if;
end Cleanup_Body_Part;
procedure Commit (Destination : in out Content_Destination) is
begin
null;
end Commit;
procedure Commit (Destination : in out CGI_Content) is
Client : HTTP_Client'Class renames Destination.Client.all;
type Value_Ptr is access String;
for Value_Ptr'Storage_Pool use Client.Pool;
Ptr : Value_Ptr;
begin
case Destination.State is
when CGI_Value =>
if Destination.Offset /= 0 then
Ptr :=
new String'
( From_Escaped
( Client.Line.Value
( Client.Line.Value'First
.. Client.Line.Last
),
True
) );
Replace
( Destination.Keys.all,
Destination.Offset,
Ptr.all'Unchecked_Access
);
if Destination.Client.Trace_Body then
Trace
( Client,
( "CGI "
& Quote
( GetName
( Destination.Keys.all,
Destination.Offset
),
'''
)
& '='
& Quote
( GetTag
( Destination.Keys.all,
Destination.Offset
) .all,
'''
) ) );
end if;
end if;
when CGI_Key =>
null;
end case;
end Commit;
function Compare (Left, Right : String) return Boolean is
begin
if Left'Length /= Right'Length then
return False;
end if;
for Index in Left'Range loop
if ( To_Lower (Left (Index))
/= Right (Index + (Right'First - Left'First))
)
then
return False;
end if;
end loop;
return True;
end Compare;
procedure Continue (Client : in out HTTP_Client; Chain : Action) is
begin
Client.Chain := Chain;
end Continue;
procedure Content_Chunk (Client : in out HTTP_Client'Class) is
begin
if Client.Source /= null then
declare
Chunk : constant String := Get (Client.Source);
begin
if Client.Chunked then -- Chunked transfer
Send (Client, Integers.Image (Chunk'Length, 16) & CRLF);
if Chunk'Length = 0 then
Client.Source := null;
Send (Client, CRLF);
else
Send (Client, Chunk);
Send (Client, CRLF);
Continue (Client, Content_Chunk'Access);
end if;
else -- Fixed length transfer
if Chunk'Length = 0 then -- End of data
Client.Source := null;
if Client.Data_Length > 0 then
Raise_Exception
( Data_Error'Identity,
( "Missing "
& Image (Client.Data_Length)
& " contents data to transfer"
) );
end if;
Send (Client, CRLF);
else -- A chunk of data obtained
if Chunk'Length < Client.Data_Length then
Send (Client, Chunk);
Client.Data_Length :=
Client.Data_Length - Chunk'Length;
Continue (Client, Content_Chunk'Access);
else
Client.Source := null;
Send
( Client,
Chunk
( Chunk'First
.. ( Chunk'First
+ Natural (Client.Data_Length)
- 1
) ) );
Client.Data_Length := 0;
Send (Client, CRLF);
end if;
end if;
end if;
end;
else
if Client.Chunked then -- Chunked transfer completed
Send (Client, "0" & CRLF & CRLF);
else -- Fixed length transfer completed
Send (Client, CRLF);
end if;
end if;
exception
when Content_Not_Ready =>
Continue (Client, Content_Chunk'Access);
when Error : others =>
Trace_Error
( Client.Listener.Factory.all,
"Sending content chunk",
Error
);
Client.Source := null;
Client.Data_Length := 0;
if Client.Chunked then -- Chunked transfer completed
Send (Client, "0" & CRLF & CRLF);
else -- Fixed length transfer completed
Send (Client, CRLF);
end if;
end Content_Chunk;
procedure Do_Body (Client : in out HTTP_Client) is
begin
null;
end Do_Body;
procedure Do_Connect (Client : in out HTTP_Client) is
begin
Reply_Text (Client, 501, Default_Response, Default_Response);
end Do_Connect;
procedure Do_Delete (Client : in out HTTP_Client) is
begin
Reply_Text (Client, 501, Default_Response, Default_Response);
end Do_Delete;
procedure Do_Head (Client : in out HTTP_Client) is
begin
Send_Status_Line (Client, 200, "OK");
Send_Date (Client, Clock);
Send_Server (Client);
Send_Length (Client, Natural'(Default_Response'Length));
Send_Connection (Client, False);
Send_Content_Type (Client);
end Do_Head;
procedure Do_Get (Client : in out HTTP_Client) is
begin
Send_Status_Line (Client, 200, "OK");
Send_Date (Client, Clock);
Send_Server (Client);
Send_Length (Client, Natural'(Default_Response'Length));
Send_Connection (Client, False);
Send_Content_Type (Client);
Send (Client, CRLF);
Send (Client, Default_Response);
end Do_Get;
procedure Do_Options (Client : in out HTTP_Client) is
Response : constant String := "";
begin
Send_Status_Line (Client, 200, "OK");
Send_Date (Client, Clock);
Send_Server (Client);
Send_Length (Client, Natural'(Response'Length));
Send_Connection (Client, False);
Send_Allow (Client, Client.Allowed);
Send (Client, CRLF);
Send (Client, Response);
end Do_Options;
procedure Do_Patch (Client : in out HTTP_Client) is
begin
Reply_Text (Client, 501, Default_Response, Default_Response);
end Do_Patch;
procedure Do_Post (Client : in out HTTP_Client) is
begin
Reply_Text (Client, 501, Default_Response, Default_Response);
end Do_Post;
procedure Do_Put (Client : in out HTTP_Client) is
begin
Reply_Text (Client, 501, Default_Response, Default_Response);
end Do_Put;
procedure Do_Trace (Client : in out HTTP_Client) is
begin
Reply_Text (Client, 501, Default_Response, Default_Response);
end Do_Trace;
procedure Do_WebSocket (Client : in out HTTP_Client) is
begin
if not Check_WebSocket (Client'Access) then
return;
end if;
declare
Result : constant WebSocket_Accept :=
WebSocket_Open (HTTP_Client'Class (Client)'Access);
Socket : WebSocket_Data renames Client.WebSocket;
begin
if Result.Accepted then
declare
type Message_Ptr is access WebSocket_Message;
for Message_Ptr'Storage_Pool use Client.Pool;
Ptr : constant Message_Ptr :=
new WebSocket_Message (Result.Size);
begin
Socket.Data := Ptr.all'Unchecked_Access;
end;
Socket.Max_Length := Result.Size;
Socket.Chunked := Result.Chunked;
Client.Expecting := WebSocket_Header;
if Result.Duplex then -- Allow full-duplex operation
Set_Overlapped_Size (Client, Client.Output_Size);
end if;
Socket.Duplex := Result.Duplex;
Socket.State := Open_Socket;
if Client.Trace_Body then
Trace (Client, "WebSocket connection accepted");
end if;
--
-- Responding with connection acknowledge
--
Send_Status_Line (Client, 101, "Switching Protocols");
Send (Client, "Upgrade: websocket" & CRLF);
Send (Client, "Connection: Upgrade" & CRLF);
Send
( Client,
( "Sec-WebSocket-Accept: "
& To_Base64
( From_Digest
( Digest
( To_Base64
( Get_Header
( Client,
Sec_WebSocket_Key_Header
) )
& "258EAFA5-E914-47DA-95CA-C5AB0DC85B11"
) ) )
& CRLF
) );
if Result.Protocols = "" then
if Client.Headers (Sec_WebSocket_Protocol_Header) /= null
then
Send -- Copy protocols
( Client,
( "Sec-WebSocket-Protocol: "
& Get_Header
( Client,
Sec_WebSocket_Protocol_Header
)
& CRLF
) );
end if;
else
Send
( Client,
"Sec-WebSocket-Protocol: " & Result.Protocols & CRLF
);
end if;
Send (Client, CRLF);
if Result.Duplex then -- Allow full-duplex operation
if Queued_To_Send (Client) > 0 then
Client.Mutex.Set (Server_Sending);
else
Client.Mutex.Set (Idle);
end if;
end if;
begin
WebSocket_Initialize (HTTP_Client'Class (Client));
exception
when Error : others =>
Trace
( Client,
( "WebSocket initialization callback fault: "
& Exception_Information (Error)
) );
raise;
end;
else
Reply_Text
( Client,
Result.Code,
Result.Reason,
Result.Reason
);
end if;
end;
exception
when others =>
WebSocket_Cleanup (Client);
raise;
end Do_WebSocket;
procedure Finalize (Client : in out HTTP_Client) is
begin
WebSocket_Cleanup (Client);
Finalize (State_Machine (Client));
Deallocate_All (Client.Pool);
Client.Expecting := Request_Line;
Client.Data_Length := 0;
Client.Status := null;
Client.Part_Mark := null;
Client.Chain := null;
Client.Boundary := null;
Client.Destination := null;
Client.Source := null;
end Finalize;
function From_Escaped
( Name : String;
Translate_Plus : Boolean := False
) return String is
Length : Natural := 0;
Pointer : Integer := Name'First;
begin
while Pointer <= Name'Last loop
if Name (Pointer) = '%' then
Pointer := Pointer + 3;
else
Pointer := Pointer + 1;
end if;
Length := Length + 1;
end loop;
declare
Pointer : Integer := Name'First;
Result : String (1..Length);
begin
for Index in Result'Range loop
if Name (Pointer) = '%' then
Result (Index) :=
Character'Val
( Integer'
( Value
( Name (Pointer + 1..Pointer + 2),
16
) ) );
Pointer := Pointer + 3;
elsif Name (Pointer) = '+' and then Translate_Plus then
Result (Index) := ' ';
Pointer := Pointer + 1;
else
Result (Index) := Name (Pointer);
Pointer := Pointer + 1;
end if;
end loop;
return Result;
exception
when others =>
Raise_Exception
( Data_Error'Identity,
"Illegal escape sequence"
);
end;
end From_Escaped;
function Get_Allowed (Client : HTTP_Client) return HTTP_Allowed is
begin
return Client.Allowed;
end Get_Allowed;
function Get_CGI_Key (Client : HTTP_Client; Index : Positive)
return String is
begin
if ( Client.CGI.Keys /= null
and then
Index <= GetSize (Client.CGI.Keys.all)
)
then
return GetName (Client.CGI.Keys.all, Index);
end if;
Raise_Exception (Constraint_Error'Identity, "Invalid key index");
end Get_CGI_Key;
function Get_CGI_Size (Client : HTTP_Client) return Natural is
begin
if Client.CGI.Keys = null then
return 0;
else
return GetSize (Client.CGI.Keys.all);
end if;
end Get_CGI_Size;
function Get_CGI_Value (Client : HTTP_Client; Index : Positive)
return String is
begin
if ( Client.CGI.Keys /= null
and then
Index <= GetSize (Client.CGI.Keys.all)
)
then
declare
Value : constant String_Ptr :=
GetTag (Client.CGI.Keys.all, Index);
begin
if Value = null then
return "";
else
return Value.all;
end if;
end;
end if;
Raise_Exception (Constraint_Error'Identity, "Invalid key index");
end Get_CGI_Value;
function Get_CGI_Value (Client : HTTP_Client; Key : String)
return String is
begin
if Client.CGI.Keys /= null then
declare
Offset : constant Natural :=
Locate (Client.CGI.Keys.all, Key);
Value : String_Ptr;
begin
if Offset > 0 then
Value := GetTag (Client.CGI.Keys.all, Offset);
if Value /= null then
return Value.all;
end if;
end if;
end;
end if;
return "";
end Get_CGI_Value;
function Get_Closing (Client : HTTP_Client) return Boolean is
begin
return 0 /= (Client.Connection and Connection_Close);
end Get_Closing;
function Get_Date (Client : HTTP_Client) return Time is
begin
if Client.Specific (Date_Header) then
return Client.Date;
else
raise Time_Error;
end if;
end Get_Date;
function Get_Header
( Client : HTTP_Client;
Header : Text_Header
) return String is
begin
if Client.Headers (Header) = null then
return "";
else
return Client.Headers (Header).all;
end if;
end Get_Header;
function Get_If_Modified_Since (Client : HTTP_Client) return Time is
begin
if Client.Specific (If_Modified_Since_Header) then
return Client.If_Modified_Since;
else
raise Time_Error;
end if;
end Get_If_Modified_Since;
function Get_If_Unmodified_Since (Client : HTTP_Client) return Time is
begin
if Client.Specific (If_Unmodified_Since_Header) then
return Client.If_Unmodified_Since;
else
raise Time_Error;
end if;
end Get_If_Unmodified_Since;
function Get_Last_Modified (Client : HTTP_Client) return Time is
begin
if Client.Specific (Last_Modified_Header) then
return Client.Last_Modified;
else
raise Time_Error;
end if;
end Get_Last_Modified;
function Get_Method (Client : HTTP_Client) return HTTP_Method is
begin
return Client.Method;
end Get_Method;
function Get_Multipart_Header
( Client : HTTP_Client;
Header : Multipart_Header
) return String is
begin
if Client.Multipart (Header) = null then
return "";
else
return Client.Multipart (Header).all;
end if;
end Get_Multipart_Header;
function Get_Name (Client : HTTP_Client) return String is
begin
return "Simple_Components_HTTP_Server/1.0";
end Get_Name;
function Get_Prefix
( Client : access Connection'Class;
Data : Stream_Element_Array;
End_Of_Stream : Boolean
) return String is
begin
return Image (Stream_Element_Count'(Data'Length), 16) & CRLF;
end Get_Prefix;
function Get_Ranges (Client : HTTP_Client) return Ranges_Set is
begin
if Client.Suffix = Stream_Element_Offset'First then -- No suffix
return (Explicit_Range, Client.Ranges);
else
return (Suffix_Range, Client.Ranges, Client.Suffix);
end if;
end Get_Ranges;
function Get_Status_Line (Client : HTTP_Client) return Status_Line is
begin
if Client.Status = null then
return (None, 0, 0, 0, "");
else
return Client.Status.all;
end if;
end Get_Status_Line;
function Get_Suffix
( Client : access Connection'Class;
Data : Stream_Element_Array;
End_Of_Stream : Boolean
) return String is
begin
if End_Of_Stream then
if Data'Length = 0 then
return CRLF & CRLF; -- Last empty chunk
else
return CRLF & '0' & CRLF & CRLF; -- Last not empty chunk
end if;
else
return CRLF;
end if;
end Get_Suffix;
function Get_Version (Client : HTTP_Client) return HTTP_Version is
begin
return Client.Version;
end Get_Version;
procedure Header_Received
( Client : in out HTTP_Client;
Header : Request_Header;
Value : String
) is
procedure Get_Text is
pragma Inline (Get_Text);
type Header_Ptr is access String;
for Header_Ptr'Storage_Pool use Client.Pool;
Ptr : Header_Ptr;
begin
if Client.Headers (Header) /= null then
return; -- The value is already set
end if;
if Header = Sec_WebSocket_Key_Header then
declare
Key : constant String := From_Base64 (Value);
begin
Ptr := new String'(Key);
Client.Headers (Header) := Ptr.all'Unchecked_Access;
end;
else
Ptr := new String'(Value);
Client.Headers (Header) := Ptr.all'Unchecked_Access;
if Header = Content_Type_Header then
if Is_Prefix ("multipart", Value, Lower) then
declare
type Boundary_Ptr is access String;
for Boundary_Ptr'Storage_Pool use Client.Pool;
Pointer : aliased Integer := Value'First + 9;
Boundary : Boundary_Ptr;
begin
while Pointer <= Value'Last loop
if Is_Prefix
( "boundary=",
Value,
Pointer,
Lower
)
then
Boundary :=
new String'
( CRLF
& "--"
& Value (Pointer + 9.. Value'Last)
);
Client.Boundary :=
Boundary.all'Unchecked_Access;
Client.Position := Client.Boundary'First;
exit;
end if;
Pointer := Pointer + 1;
end loop;
end;
if Client.Boundary = null then
Raise_Exception
( Data_Error'Identity,
"Missing multipart boundary specification"
);
end if;
end if;
end if;
end if;
end Get_Text;
begin
case Header is
when Text_Header =>
Get_Text;
when Date_Header =>
Client.Date := To_Time (Value);
Client.Specific (Date_Header) := True;
when Content_Length_Header =>
Client.Data_Length :=
Stream_Element_Offset_Edit.Value (Value);
when Last_Modified_Header =>
Client.If_Modified_Since := To_Time (Value);
Client.Specific (Last_Modified_Header) := True;
when If_Modified_Since_Header =>
Client.If_Modified_Since := To_Time (Value);
Client.Specific (If_Modified_Since_Header) := True;
when If_Unmodified_Since_Header =>
Client.If_Unmodified_Since := To_Time (Value);
Client.Specific (If_Unmodified_Since_Header) := True;
when Connection_Header =>
Client.Connection := To_Flags (Value);
when Range_Header =>
declare
Pointer : Integer := Value'First;
From : Stream_Element_Offset;
To : Stream_Element_Offset;
begin
if not Is_Prefix ("bytes=", Value, Pointer, Lower) then
Raise_Exception
( Data_Error'Identity,
"Illegal or missing range units specification"
);
end if;
Pointer := Pointer + 6;
loop
begin
Get (Value, Pointer, From);
exception
when others =>
Raise_Exception
( Data_Error'Identity,
"Missing or wrong lower range bound " &
"specification"
);
end;
if From < 0 then
exit when Pointer > Value'Last;
Raise_Exception
( Data_Error'Identity,
"Suffix range is not the last on of " &
"the range specification"
);
end if;
if not Is_Prefix ("-", Value, Pointer) then
Raise_Exception
( Data_Error'Identity,
"Missing minus in the range specification"
);
end if;
Pointer := Pointer + 1;
if Pointer <= Value'Last then
begin
Get (Value, Pointer, To);
exception
when others =>
Raise_Exception
( Data_Error'Identity,
"Missing or wrong upper range bound " &
"specification"
);
end;
begin
Add (Client.Ranges, From, To);
exception
when others =>
Raise_Exception
( Data_Error'Identity,
"Illegal range specification"
);
end;
else
Client.Suffix := From;
exit;
end if;
exit when Pointer > Value'Last;
if Value (Pointer) /= ',' then
Raise_Exception
( Data_Error'Identity,
"Missing comma in the ranges specification"
);
end if;
Pointer := Pointer + 1;
end loop;
end;
end case;
end Header_Received;
function Image (Scheme : Scheme_Type) return String is
begin
if Scheme_Type'Pos (Scheme) < GetSize (Schemes) then
return GetName (Schemes, Scheme_Type'Pos (Scheme) + 1);
else
return "unknown";
end if;
end Image;
function Image (Header : Request_Header) return String is
Result : String := Request_Header'Image (Header);
Capitalize : Boolean := True;
begin
for Index in Result'First..Result'Last - 7 loop
if Result (Index) = '_' then
Result (Index) := '-';
Capitalize := True;
elsif Capitalize then
Result (Index) := To_Upper (Result (Index));
Capitalize := False;
else
Result (Index) := To_Lower (Result (Index));
end if;
end loop;
return Result (Result'First..Result'Last - 7);
end Image;
procedure Initialize (Client : in out HTTP_Client) is
begin
Client.LF.Value (1) := 10;
Client.Line.Terminator := Character'Val (13);
Set_Maximum_Size (Client.Line, Client.Request_Length);
Initialize (State_Machine (Client));
end Initialize;
function Is_Empty (Stream : Content_Stream) return Boolean is
begin
return Stream.First = null;
end Is_Empty;
procedure Message_Chunk (Client : in out HTTP_Client'Class) is
Done : Boolean;
begin
Send
( Client => Client,
Stream => Client.Body_Content,
End_Of_Stream => Done
);
if Done then
if Client.Stub /= null then
declare
type Stub_Ptr is access Content_Item;
for Stub_Ptr'Storage_Pool use Client.Pool;
function To_Ptr is
new Ada.Unchecked_Conversion
( Content_Item_Ptr,
Stub_Ptr
);
procedure Free is
new Ada.Unchecked_Deallocation
( Content_Item,
Stub_Ptr
);
Ptr : Stub_Ptr := To_Ptr (Client.Stub);
begin
Free (Ptr);
end;
Client.Stub := null;
end if;
if Client.WebSocket.State = Closing_Socket then
WebSocket_Cleanup (Client);
end if;
else
Continue (Client, Message_Chunk'Access);
end if;
end Message_Chunk;
procedure Multipart_Header_Received
( Client : in out HTTP_Client;
Header : Request_Header;
Value : String
) is
type Header_Ptr is access String;
for Header_Ptr'Storage_Pool use Client.Pool;
Ptr : Header_Ptr;
begin
case Header is
when Multipart_Header =>
if Client.Multipart (Header) = null then
Ptr := new String'(Value);
Client.Multipart (Header) := Ptr.all'Unchecked_Access;
if Client.Part_Mark = null then
Client.Part_Mark := Client.Multipart (Header);
end if;
end if;
when others =>
Trace
( Client,
"Unsupported multipart header " & Quote (Value, ''')
);
end case;
end Multipart_Header_Received;
procedure Queue_Content
( Client : in out HTTP_Client;
Data : Stream_Element_Array
) is
type Content_Item_Ptr is access Content_Item;
for Content_Item_Ptr'Storage_Pool use Client.Pool;
Ptr : Content_Item_Ptr;
begin
Ptr := new Content_Item'
( Kind => Literal_Value,
Length => Data'Length,
Next => null,
First => 1,
Data => Data
);
if Client.Stub = null then
Client.Stub := Ptr.all'Unchecked_Access;
end if;
Accumulate_Body (Client, Ptr.all'Unchecked_Access);
Continue (Client, Message_Chunk'Access);
end Queue_Content;
procedure Queue_Content
( Client : in out HTTP_Client;
Data : String
) is
type Content_Item_Ptr is access Content_Item;
for Content_Item_Ptr'Storage_Pool use Client.Pool;
Ptr : Content_Item_Ptr;
begin
Ptr := new Content_Item
( Kind => Literal_Value,
Length => Data'Length
);
declare
Message : Stream_Element_Array renames Ptr.Data;
Pointer : Stream_Element_Offset := Message'First;
begin
for Index in Data'Range loop
Message (Pointer) := Character'Pos (Data (Index));
Pointer := Pointer + 1;
end loop;
end;
if Client.Stub = null then
Client.Stub := Ptr.all'Unchecked_Access;
end if;
Accumulate_Body (Client, Ptr.all'Unchecked_Access);
Continue (Client, Message_Chunk'Access);
end Queue_Content;
procedure Process_Body_Tail (Client : in out HTTP_Client'Class) is
Request : String renames Client.Line.Value (1..Client.Line.Last);
Pointer : constant Integer := Request'First;
begin
if Request = "--" then
Client.Expecting := Multipart_Epilogue;
elsif Pointer > Request'Last then
Client.Expecting := Multipart_Header_Line;
else
Trace
( Client,
"Malformed ending of a multipart body: " & Request
);
end if;
end Process_Body_Tail;
procedure Process_Chunk_Line (Client : in out HTTP_Client'Class) is
Request : String renames Client.Line.Value (1..Client.Line.Last);
Pointer : Integer := Request'First;
begin
Get
( Source => Request,
Pointer => Pointer,
Value => Client.Data_Length,
Base => 16,
First => 0
);
Client.Expecting := Client.Chunk_Type; -- Restore expected type
if Client.Data_Length = 0 then
Client.Chunked := False; -- End of chunked receive
if Client.Stream /= null then
Body_Received (Client, Client.Stream.all);
Client.Stream := null;
elsif Client.Destination /= null then
Commit (Client.Destination.all);
if Client.Destination = Client.CGI'Unchecked_Access then
Body_Received (Client, Client.CGI.Keys.all);
else
Body_Received (Client, Client.Destination.all);
end if;
Client.Destination := null;
end if;
end if;
exception
when Data_Error | Constraint_Error | End_Error =>
Raise_Exception
( Data_Error'Identity,
"Malformed data chunk header line"
);
end Process_Chunk_Line;
procedure Process_Epilogue (Client : in out HTTP_Client'Class) is
begin
null;
end Process_Epilogue;
procedure Process_Header_Line (Client : in out HTTP_Client'Class) is
Request : String renames Client.Line.Value (1..Client.Line.Last);
Pointer : Integer := Request'First;
begin
if Pointer > Request'Last then
if Client.Trace_Header then
Trace (Client, "Header:");
for Index in Client.Headers'Range loop
if Client.Headers (Index) /= null then
Trace
( Client,
( " "
& Text_Header'Image (Index)
& '='
& Quote (Client.Headers (Index).all, ''')
) );
end if;
end loop;
end if;
if Client.Boundary /= null then -- Multipart body
Client.Expecting := Multipart_Preamble;
Client.Multipart := (others => null);
Client.Part_Mark := null;
elsif Client.Chunked then -- Chunked transfer-encoded body
Do_Body (Client);
Client.Chunk_Type := Body_Data;
Client.Expecting := Chunk_Line;
elsif Client.Data_Length > 0 then -- Fixed-length body
Do_Body (Client);
Client.Expecting := Body_Data;
else
Process_Request (Client);
end if;
else
while Pointer <= Request'Last loop
if Request (Pointer) = ':' then
declare
Index : constant Integer :=
Locate
( Request_Headers,
Request (Request'First..Pointer - 1)
);
begin
if Index > 0 then
Pointer := Pointer + 1;
if Pointer <= Request'Last and then
Request (Pointer) = ' '
then
Pointer := Pointer + 1;
end if;
Header_Received
( Client,
GetTag (Request_Headers, Index),
Request (Pointer..Request'Last)
);
else
Trace
( Client,
( "Unsupported header "
& Quote
( Request (Request'First..Pointer - 1),
'''
) ) );
end if;
end;
return;
end if;
Pointer := Pointer + 1;
end loop;
Trace (Client, "Malformed header " & Request);
end if;
end Process_Header_Line;
procedure Process_Part_Header (Client : in out HTTP_Client'Class) is
Request : String renames Client.Line.Value (1..Client.Line.Last);
Pointer : Integer := Request'First;
begin
if Pointer > Request'Last then
if Client.Trace_Header then
Trace (Client, "Multipart header:");
for Index in Client.Multipart'Range loop
if Client.Multipart (Index) /= null then
Trace
( Client,
( " "
& Multipart_Header'Image (Index)
& '='
& Quote (Client.Multipart (Index).all, ''')
) );
end if;
end loop;
end if;
Do_Body (Client);
Client.Expecting := Multipart_Body_Data;
else
while Pointer <= Request'Last loop
if Request (Pointer) = ':' then
declare
Index : constant Integer :=
Locate
( Request_Headers,
Request (Request'First..Pointer - 1)
);
begin
if Index > 0 then
Pointer := Pointer + 1;
if Pointer <= Request'Last and then
Request (Pointer) = ' '
then
Pointer := Pointer + 1;
end if;
Multipart_Header_Received
( Client,
GetTag (Request_Headers, Index),
Request (Pointer..Request'Last)
);
else
Trace
( Client,
( "Unsupported header "
& Quote
( Request (Request'First..Pointer - 1),
'''
) ) );
end if;
end;
return;
end if;
Pointer := Pointer + 1;
end loop;
Trace (Client, "Malformed multipart header " & Request);
end if;
end Process_Part_Header;
procedure Process_Preamble (Client : in out HTTP_Client'Class) is
Request : String renames Client.Line.Value (1..Client.Line.Last);
Boundary : String renames Client.Boundary.all;
begin
if Is_Prefix -- Matching boundary without forward CRLF
( Boundary (Boundary'First + 2..Boundary'Last),
Request
)
then -- Boundary is here
if Is_Prefix
( "--",
Request,
Request'First + Boundary'Length
)
then -- Last boundary
Client.Expecting := Multipart_Epilogue;
else
Client.Expecting := Multipart_Header_Line;
end if;
end if;
end Process_Preamble;
procedure Process_Request (Client : in out HTTP_Client'Class) is
begin
Client.Expecting := Request_Line;
case Client.Method is
when HTTP_GET =>
if Compare
( Get_Header (Client, Upgrade_Header),
"websocket"
)
then
Do_WebSocket (Client);
else -- This is a normal GET request
Do_Get (Client);
end if;
when HTTP_HEAD =>
Do_Head (Client);
when HTTP_POST =>
Do_Post (Client);
when HTTP_PUT =>
Do_Put (Client);
when HTTP_DELETE =>
Do_Delete (Client);
when HTTP_TRACE =>
Do_Trace (Client);
when HTTP_OPTIONS =>
Do_Options (Client);
when HTTP_CONNECT =>
Do_Connect (Client);
when HTTP_PATCH =>
Do_Patch (Client);
end case;
end Process_Request;
procedure Process_Request_Line (Client : in out HTTP_Client'Class) is
Request : String renames Client.Line.Value (1..Client.Line.Last);
Pointer : Integer := Request'First;
function Get_Version return HTTP_Version is
Version : Float;
begin
Get (Request, Pointer);
if not Is_Prefix ("http/", Request, Pointer, Lower) then
Trace (Client, "No HTTP version specified (1.1 assumed)");
return 1.1;
end if;
Pointer := Pointer + 5;
begin
Get (Request, Pointer, Version);
exception
when others =>
raise Constraint_Error;
end;
if Pointer <= Request'Last then
Trace
( Client,
"Unrecognized text follows HTTP version (1.1 assumed)"
);
return 1.1;
else
return HTTP_Version (Version);
end if;
exception
when Constraint_Error =>
Trace (Client, "Illegal HTTP version (1.1 assumed)");
return 1.1;
end Get_Version;
begin
Skip (Request, Pointer);
begin
Client.Method :=
Find (Commands, Request (Request'First..Pointer - 1));
exception
when End_Error =>
Raise_Exception
( Data_Error'Identity,
( "Method "
& Request (Request'First..Pointer - 1)
& " is not supported"
) );
end;
Pointer := Pointer + 1;
if Pointer > Request'Last then
Raise_Exception (Data_Error'Identity, "Missing request-URI");
end if;
Client.Expecting := Header_Line;
Client.Chunked := False;
Client.Connection := 0;
Client.Status := null;
Client.Stream := null;
Client.Source := null;
Client.Destination := null;
Client.Boundary := null;
Client.Data_Length := 0;
Client.Body_Content.First := null;
Client.Headers := (others => null);
Client.Multipart := (others => null);
Client.Specific := (others => False);
Client.Suffix := Stream_Element_Count'First;
Client.CGI.Keys := null;
Erase (Client.Ranges);
if Request (Pointer) = '*' then
Pointer := Pointer + 1;
Status_Line_Received (Client, Client.Method, Get_Version);
elsif Request (Pointer) = '/' then
Pointer := Pointer + 1;
declare
Path : constant Integer := Pointer;
Query : Integer := Request'Last + 1;
begin
while Pointer <= Request'Last loop
case Request (Pointer) is
when ' ' =>
exit;
when '?' =>
Query := Integer'Min (Query, Pointer);
Pointer := Pointer + 1;
when others =>
Pointer := Pointer + 1;
end case;
end loop;
Query := Integer'Min (Query, Pointer);
Status_Line_Received
( Client => Client,
Method => Client.Method,
Path => From_Escaped (Request (Path..Query - 1)),
Query => From_Escaped (Request (Query + 1..Pointer - 1)),
Version => Get_Version
);
end;
else
declare
Host_First : Integer := Request'First;
Host_Next : Integer := Request'First;
Path_First : Integer := Request'First;
Path_Next : Integer := Request'First;
Query_First : Integer := Request'First;
Query_Next : Integer := Request'First;
Port : Integer := 80;
Scheme : Scheme_Type;
begin
loop
if Pointer > Request'Last then
Raise_Exception
( Data_Error'Identity,
"URI does not contain scheme followed by colon ':'"
);
end if;
if Request (Pointer) = ':' then
declare
Offset : constant Integer :=
Locate (Schemes, Request (1..Pointer - 1));
begin
if Offset > 0 then
Scheme := GetTag (Schemes, Offset);
else
Scheme := Unknown_Scheme;
end if;
end;
if Client.Trace_Header then
Trace (Client, "Scheme: " & Image (Scheme));
end if;
Pointer := Pointer + 1;
exit;
end if;
Pointer := Pointer + 1;
end loop;
if Is_Prefix ("//", Request, Pointer) then
Pointer := Pointer + 2;
Host_First := Pointer;
Host_Next := Pointer;
while Pointer <= Request'Last loop
case Request (Pointer) is
when ' ' | '/' =>
exit;
when ':' =>
Pointer := Pointer + 1;
begin
Get
( Source => Request,
Pointer => Pointer,
Value => Port,
First => 1,
Last => 2**16-1
);
exception
when Constraint_Error =>
Raise_Exception
( Data_Error'Identity,
"Port number is not in range"
);
when others =>
Raise_Exception
( Data_Error'Identity,
"No port number after colon ':' in URI"
);
end;
exit;
when others =>
Pointer := Pointer + 1;
Host_Next := Pointer;
end case;
end loop;
if Host_First >= Host_Next then
Raise_Exception
( Data_Error'Identity,
"Empty host address in URI"
);
end if;
if Request (Pointer) = '/' then
Pointer := Pointer + 1;
Path_First := Pointer;
Path_Next := Pointer;
while Pointer <= Request'Last loop
case Request (Pointer) is
when ' ' =>
exit;
when '?' =>
Pointer := Pointer + 1;
Query_First := Pointer;
Skip (Request, Pointer);
Query_Next := Pointer;
exit;
when others =>
Pointer := Pointer + 1;
Path_Next := Pointer;
end case;
end loop;
end if;
Status_Line_Received
( Client => Client,
Scheme => Scheme,
Method => Client.Method,
Port => Port_Type (Port),
Version => Get_Version,
Host => From_Escaped
( Request (Host_First..Host_Next - 1)
),
Path => From_Escaped
( Request (Path_First..Path_Next - 1)
),
Query => From_Escaped
( Request (Query_First..Query_Next - 1)
) );
else
Path_First := Pointer;
Path_Next := Pointer;
while Pointer <= Request'Last loop
case Request (Pointer) is
when ' ' =>
exit;
when '?' =>
Pointer := Pointer + 1;
Query_First := Pointer;
Skip (Request, Pointer);
Query_Next := Pointer;
exit;
when others =>
Pointer := Pointer + 1;
Path_Next := Pointer;
end case;
end loop;
Status_Line_Received
( Client => Client,
Scheme => Scheme,
Method => Client.Method,
Port => 0, -- No port
Version => Get_Version,
Host => "", -- No host
Path => From_Escaped
( Request (Path_First..Path_Next - 1)
),
Query => From_Escaped
( Request (Query_First..Query_Next -1)
) );
end if;
end;
end if;
end Process_Request_Line;
procedure Put
( Destination : in out CGI_Content;
Data : String
) is
type Value_Ptr is access String;
for Value_Ptr'Storage_Pool use Destination.Client.Pool;
Value : String renames Destination.Client.Line.Value.all;
Last : Natural renames Destination.Client.Line.Last;
begin
for Index in Data'Range loop
case Destination.State is
when CGI_Value =>
if Data (Index) = '&' then
if Destination.Offset /= 0 then
declare
Ptr : Value_Ptr;
begin
Ptr :=
new String'
( From_Escaped
( Value (Value'First..Last),
True
) );
Last := 0;
Replace
( Destination.Keys.all,
Destination.Offset,
Ptr.all'Unchecked_Access
);
if Destination.Client.Trace_Body then
Trace
( Destination.Client.all,
( "CGI "
& Quote
( GetName
( Destination.Keys.all,
Destination.Offset
),
'''
)
& '='
& Quote
( GetTag
( Destination.Keys.all,
Destination.Offset
) .all,
'''
) ) );
end if;
end;
end if;
Destination.State := CGI_Key;
else
if Last < Value'Last then
Last := Last + 1;
Value (Last) := Data (Index);
else
Raise_Exception
( Data_Error'Identity,
( "CGI value is longer than "
& Image (Destination.Client.Request_Length)
& " bytes"
) );
end if;
end if;
when CGI_Key =>
if Data (Index) = '=' then
begin
declare
Key : constant String :=
From_Escaped
( Value (Value'First..Last),
True
);
begin
Destination.Offset :=
Locate (Destination.Keys.all, Key);
if Destination.Offset > 0 then
if ( GetTag
( Destination.Keys.all,
Destination.Offset
)
/= null
)
then
Destination.Offset := 0;
end if;
elsif ( Destination.Client.Validate_CGI
and then
Validate_Key
( Destination.Client.all,
Key
) ) then
Add
( Destination.Keys.all,
Key,
null,
Destination.Offset
);
end if;
end;
exception
when others =>
Destination.Offset := 0;
end;
Last := 0;
Destination.State := CGI_Value;
else
if Last < Value'Last then
Last := Last + 1;
Value (Last) := Data (Index);
end if;
end if;
end case;
end loop;
end Put;
procedure Read
( Stream : in out Content_Stream;
Item : out Stream_Element_Array;
Last : out Stream_Element_Offset
) is
Count : Stream_Element_Count := Item'Length;
procedure Add
( Data : Stream_Element_Array;
First : in out Stream_Element_Offset;
Next : Content_Item_Ptr
) is
pragma Inline (Add);
Size : constant Stream_Element_Count := Data'Last + 1 - First;
begin
if Size > Count then
Last := Last + Count;
Item (Last - Count + 1..Last) :=
Data (First..First + Count - 1);
First := First + Count;
Stream.Length := Stream.Length - Count;
Count := 0;
else
Last := Last + Size;
Count := Count - Size;
Item (Last - Size + 1..Last) := Data (First..Data'Last);
Stream.Length := Stream.Length - Size;
Stream.First := Next;
end if;
end Add;
procedure Add
( Data : String;
First : in out Stream_Element_Offset;
Next : Content_Item_Ptr
) is
pragma Inline (Add);
Size : constant Stream_Element_Count :=
Stream_Element_Offset (Data'Last) + 1 - First;
begin
if Size > Count then
Last := Last + Count;
Item (Last - Count + 1..Last) :=
From_String
( Data
( Integer (First)
.. Integer (First + Count - 1)
) );
First := First + Count;
Stream.Length := Stream.Length - Count;
Count := 0;
else
Last := Last + Size;
Count := Count - Size;
Item (Last - Size + 1..Last) :=
From_String
( Data
( Integer (First)
.. Integer (Data'Last)
) );
Stream.Length := Stream.Length - Size;
Stream.First := Next;
end if;
end Add;
begin
Last := Item'First - 1;
while Count > 0 and then Stream.First /= null loop
declare
This : Content_Item renames Stream.First.all;
begin
case This.Kind is
when Literal_Value =>
Add (This.Data, This.First, This.Next);
when Stream_Elements_Pointer =>
Add (This.Data_Ptr.all, This.First, This.Next);
when String_Pointer =>
Add (This.Text_Ptr.all, This.First, This.Next);
end case;
end;
end loop;
end Read;
procedure Receive_Body
( Client : in out HTTP_Client;
Stream : access Root_Stream_Type'Class
) is
begin
Client.Stream := Stream.all'Unchecked_Access;
end Receive_Body;
procedure Receive_Body
( Client : in out HTTP_Client;
Content : access Content_Destination'Class
) is
begin
Client.Destination := Content.all'Unchecked_Access;
end Receive_Body;
procedure Receive_Body
( Client : in out HTTP_Client;
Content : access CGI_Keys.Table'Class
) is
begin
for Offset in 1..GetSize (Content.all) loop
Replace (Content.all, Offset, null);
end loop;
Client.Destination := Client.CGI'Unchecked_Access;
Client.CGI.Keys := Content.all'Unchecked_Access;
Client.CGI.State := CGI_Key;
Client.CGI.Offset := 0;
Client.Line.Last := 0;
Client.Validate_CGI := False;
end Receive_Body;
procedure Receive_Body
( Client : in out HTTP_Client;
Content : String;
Delimiter : Character := ','
) is
Start : Integer := Content'First;
begin
Erase (Client.CGI.Map);
for Index in Content'Range loop
if Content (Index) = Delimiter then
Replace (Client.CGI.Map, Content (Start..Index - 1), null);
Start := Index + 1;
elsif Index = Content'Last then
Replace (Client.CGI.Map, Content (Start..Index), null);
end if;
end loop;
Client.Destination := Client.CGI'Unchecked_Access;
Client.CGI.Keys := Client.CGI.Map'Unchecked_Access;
Client.CGI.State := CGI_Key;
Client.CGI.Offset := 0;
Client.Line.Last := 0;
Client.Validate_CGI := False;
end Receive_Body;
procedure Receive_Body (Client : in out HTTP_Client) is
begin
Erase (Client.CGI.Map);
Client.Destination := Client.CGI'Unchecked_Access;
Client.CGI.Keys := Client.CGI.Map'Unchecked_Access;
Client.CGI.State := CGI_Key;
Client.CGI.Offset := 0;
Client.Line.Last := 0;
Client.Validate_CGI := True;
end Receive_Body;
procedure Received
( Client : in out HTTP_Client;
Data : Stream_Element_Array;
Pointer : in out Stream_Element_Offset
) is
function Done (Data : Stream_Element_Array) return String is
begin
return (1..Data'Length => '.');
end Done;
function Left (Data : Stream_Element_Array) return String is
begin
return (1..Data'Length => 'x');
end Left;
procedure Store (Data : Stream_Element_Array) is
pragma Inline (Store);
begin
if Data'Length > 0 then
if Client.Stream /= null then
begin
Write (Client.Stream.all, Data);
exception
when Error : others =>
Body_Error -- Dispatching call
( HTTP_Client'Class (Client),
Client.Stream.all,
Error
);
Client.Stream := null;
Cleanup_Body_Part (Client);
end;
elsif Client.Destination /= null then
begin
Put (Client.Destination.all, To_String (Data));
exception
when Error : others =>
if ( Client.Destination
= Client.CGI'Unchecked_Access
)
then
Body_Error -- Dispatching call
( HTTP_Client'Class (Client),
Client.CGI.Keys.all,
Error
);
else
Body_Error -- Dispatching call
( HTTP_Client'Class (Client),
Client.Destination.all,
Error
);
end if;
Client.Destination := null;
Cleanup_Body_Part (Client);
end;
end if;
end if;
end Store;
procedure Store (Data : String) is
pragma Inline (Store);
begin
if Data'Length > 0 then
if Client.Stream /= null then
begin
Write (Client.Stream.all, From_String (Data));
exception
when Error : others =>
Body_Error -- Dispatching call
( HTTP_Client'Class (Client),
Client.Stream.all,
Error
);
Client.Stream := null;
Cleanup_Body_Part (Client);
end;
elsif Client.Destination /= null then
begin
Put (Client.Destination.all, Data);
exception
when Error : others =>
if ( Client.Destination
= Client.CGI'Unchecked_Access
)
then
Body_Error -- Dispatching call
( HTTP_Client'Class (Client),
Client.CGI.Keys.all,
Error
);
else
Body_Error -- Dispatching call
( HTTP_Client'Class (Client),
Client.Destination.all,
Error
);
end if;
Client.Destination := null;
Cleanup_Body_Part (Client);
end;
end if;
end if;
end Store;
procedure Multipart_Body (Last : Stream_Element_Offset) is
pragma Inline (Multipart_Body);
--
-- |<- Boundary ->| |<- Data ----------------------->|
-- |***+++++ | |xxxxxx|+++++////////////////////|
-- | | | | |
-- | Position Pointer From Last
-- Client.Position
--
-- + - Matched so far as boundary prefix
-- * - Matched as boundary prefix earlier (not in Data buffer)
-- x - Stored as the body
-- / - Data to process
--
Boundary : String renames Client.Boundary.all;
Position : Integer := Client.Position;
Start : constant Stream_Element_Offset := Pointer;
From : Stream_Element_Offset := Pointer;
begin
loop
if Position > Boundary'Last then -- All boundary matched
declare
Tail : Stream_Element_Array renames
Data (Pointer..From - 1 - Boundary'Length);
begin
if Tail'Length > 0 then
if Client.Trace_Body then
Trace
( Client,
( "Multipart body |"
& Image (Tail)
& "| "
& Image (Pointer)
& ".."
& Image (Last)
& " "
& Image (Client.Data_Length - From + Start)
& " more expected"
) );
end if;
Store (Tail);
end if;
end;
Pointer := From;
Client.Data_Length :=
Client.Data_Length - Pointer + Start;
Client.Position := Boundary'First;
Client.Expecting := Multipart_Body_Tail;
if Client.Stream /= null then
Body_Received -- Dispatching call
( HTTP_Client'Class (Client),
Client.Stream.all
);
Client.Stream := null;
elsif Client.Destination /= null then
Commit (Client.Destination.all);
if ( Client.Destination
= Client.CGI'Unchecked_Access
)
then
Body_Received -- Dispatching call
( HTTP_Client'Class (Client),
Client.CGI.Keys.all
);
else
Body_Received -- Dispatching call
( HTTP_Client'Class (Client),
Client.Destination.all
);
end if;
Client.Destination := null;
end if;
Cleanup_Body_Part (Client);
return;
elsif From > Last then -- Everything matched the boundary,
declare -- so far
Tail : Stream_Element_Array renames
Data
( Pointer
.. ( From
- 1
- Stream_Element_Offset
( Position
- Boundary'First
) ) );
begin
if Tail'Length > 0 then
if Client.Trace_Body then
Trace
( Client,
( "Multipart body |"
& Image (Tail)
& "| "
& Image (Pointer)
& ".."
& Image (Last)
& " "
& Image (Client.Data_Length - From + Start)
& " more expected"
) );
end if;
Store (Tail);
end if;
end;
Pointer := From;
Client.Position := Position;
Client.Data_Length :=
Client.Data_Length - Pointer + Start;
return;
elsif Character'Pos (Boundary (Position)) = Data (From) then
Position := Position + 1;
From := From + 1;
elsif Client.Position > Boundary'First then -- Some out of
declare -- buffer data
From : Integer := Boundary'First + 1;
To : constant Integer := Client.Position;
begin
while From < To loop
exit when
Is_Prefix (Boundary (From..To), Boundary);
From := From + 1;
end loop;
if Client.Trace_Body then
Trace
( Client,
( "Multipart body "
& "|"
& Image
( From_String
( Boundary (Boundary'First..From - 1)
) )
& "| "
& Image (Pointer)
& ".."
& Image (Last)
) );
end if;
Store (Boundary (Boundary'First..From - 1));
Position := Boundary'First + To - From;
Client.Position := Position;
end;
elsif Position > Boundary'First then -- Boundary prefix was
From := -- matched, retreating
( From
+ 1
- Stream_Element_Offset (Position - Boundary'First)
);
Position := Boundary'First;
else
From := From + 1;
end if;
end loop;
end Multipart_Body;
procedure WebSocket_Message_End is
Socket : WebSocket_Data renames Client.WebSocket;
Frame : WebSocket_Message renames Socket.Frame.all;
function Status return WebSocket_Status is
begin
if Frame.Pointer > 2 then
return ( WebSocket_Status (Frame.Data (1)) * 256
+ WebSocket_Status (Frame.Data (2))
);
else
return 1000;
end if;
end Status;
function Message return String is
begin
if Frame.Pointer > 2 then
return To_String (Frame.Data (3..Frame.Pointer - 1));
else
return "";
end if;
end Message;
begin
case Frame.Type_Of is
when WebSocket_Binary_Type => -- Binary data frame ended
if Socket.State = Open_Socket then
if Socket.Duplex then
Socket.Context := Current_Task;
end if;
if Client.Trace_Body then
Trace
( Client,
( "WebSocket received binary message ["
& Image (Frame.Data (1..Frame.Pointer - 1))
& "]"
) );
end if;
WebSocket_Received
( HTTP_Client'Class (Client),
Frame.Data (1..Frame.Pointer - 1)
);
end if;
when WebSocket_Text_Type => -- Text data frame ended
if Socket.State = Open_Socket then
if Socket.Duplex then
Socket.Context := Current_Task;
end if;
if Client.Trace_Body then
Trace
( Client,
( "WebSocket received text message ["
& To_String (Frame.Data (1..Frame.Pointer - 1))
& "]"
) );
end if;
WebSocket_Received
( HTTP_Client'Class (Client),
To_String (Frame.Data (1..Frame.Pointer - 1))
);
end if;
when WebSocket_Close_Type =>
if Socket.State = Open_Socket then
if Socket.Duplex then
Socket.Context := Current_Task;
end if;
begin
WebSocket_Closed
( HTTP_Client'Class (Client),
Status,
Message
);
exception
when Error : others =>
Trace
( Client,
( "WebSocket closing callback fault: "
& Exception_Information (Error)
) );
end;
if Socket.State = Open_Socket then
WebSocket_Close (Client, Status, Message);
end if;
end if;
if Socket.State = Closing_Socket then
if Queued_To_Send (Client) = 0 then
WebSocket_Cleanup (Client);
end if;
end if;
when WebSocket_Ping_Type =>
if Socket.State = Open_Socket then
WebSocket_Send
( Client, -- Pong frame
( ( 2#1000_0000# or WebSocket_Pong_Type,
Stream_Element (Frame.Length)
)
& Frame.Data (1..Frame.Length)
) );
end if;
when others => -- Ignore unsupported frames
Trace
( Client,
( "Message of an unsupported type "
& Image (Integer (Frame.Type_Of))
& " ignored"
) );
end case;
end WebSocket_Message_End;
begin
Pointer := Data'First;
while Pointer <= Data'Last loop
case Client.Expecting is
when Body_Data => -- Single body receipt
if Client.Data_Length > 0 then -- Receiving the body
if Client.Data_Length > Data'Last - Pointer + 1 then
Client.Data_Length :=
Client.Data_Length - Data'Last + Pointer - 1;
if Client.Trace_Body then
Trace
( Client,
( "Append body "
& Done (Data (Data'First..Pointer - 1))
& "|"
& Image (Data (Pointer..Data'Last))
& "| "
& Image (Client.Data_Length)
& " more expected"
) );
end if;
Store (Data (Pointer..Data'Last));
Pointer := Data'Last + 1;
else
if Client.Trace_Body then
Trace
( Client,
( "Append body "
& Done (Data (Data'First..Pointer - 1))
& "|"
& Image
( Data
( Pointer
.. Pointer + Client.Data_Length - 1
) )
& "|"
& Left
( Data
( Pointer + Client.Data_Length
.. Data'Last
) )
& " No more expected"
) );
end if;
Store
( Data
( Pointer
.. Pointer + Client.Data_Length - 1
) );
Pointer := Pointer + Client.Data_Length;
Client.Data_Length := 0;
end if;
end if;
if Client.Data_Length = 0 then -- End of chunk
if Client.Chunked then -- Chunked receipt
Client.Chunk_Type := Body_Data;
Client.Expecting := Chunk_Line;
else -- Explicit length body
if Client.Stream /= null then
Body_Received -- Dispatching call
( HTTP_Client'Class (Client),
Client.Stream.all
);
Client.Stream := null;
elsif Client.Destination /= null then
Commit (Client.Destination.all);
if ( Client.Destination
= Client.CGI'Unchecked_Access
)
then
Body_Received -- Dispatching call
( HTTP_Client'Class (Client),
Client.CGI.Keys.all
);
else
Body_Received -- Dispatching call
( HTTP_Client'Class (Client),
Client.Destination.all
);
end if;
Client.Destination := null;
end if;
Cleanup_Body_Part (Client);
Process_Request (Client);
end if;
end if;
when Multipart_Body_Data => -- Receiving multipart body
if Client.Data_Length > 0 then -- Receiving a body part
if Client.Data_Length > Data'Last - Pointer + 1 then
Multipart_Body (Data'Last);
else
Multipart_Body (Pointer + Client.Data_Length - 1);
end if;
end if;
if Client.Data_Length = 0 then -- End of chunk
if Client.Chunked then -- Chunked receipt
Client.Chunk_Type := Multipart_Body_Data;
Client.Expecting := Chunk_Line;
else -- Explicit length
if Client.Expecting = Multipart_Epilogue then
Process_Request (Client);
else
Raise_Exception
( Data_Error'Identity,
"Malformed multipart body"
);
end if;
end if;
end if;
when Multipart_Body_Tail =>
Receive_Multipart_Line
( Client,
Data,
Pointer,
Process_Body_Tail'Access
);
when Multipart_Preamble => -- Multipart lines and headers
Receive_Multipart_Line
( Client,
Data,
Pointer,
Process_Preamble'Access
);
when Multipart_Header_Line =>
Receive_Multipart_Line
( Client,
Data,
Pointer,
Process_Part_Header'Access
);
when Multipart_Epilogue =>
Receive_Multipart_Line
( Client,
Data,
Pointer,
Process_Epilogue'Access
);
when Request_Line =>
Receive_Header_Line
( Client,
Data,
Pointer,
Process_Request_Line'Access
);
when Header_Line =>
Receive_Header_Line
( Client,
Data,
Pointer,
Process_Header_Line'Access
);
when Chunk_Line =>
Receive_Header_Line
( Client,
Data,
Pointer,
Process_Chunk_Line'Access
);
when WebSocket_Header =>
declare
Octet : constant Stream_Element := Data (Pointer);
Socket : WebSocket_Data renames Client.WebSocket;
begin
Socket.Final := 0 /= (Octet and 2#1000_0000#);
if 0 /= (Octet and 2#0111_0000#) then
Raise_Exception
( Data_Error'Identity,
"RSV bits must be cleared"
);
end if;
Socket.Frame_Type := Octet and 2#1111#;
Client.Expecting := WebSocket_Length;
Pointer := Pointer + 1;
end;
when WebSocket_Length =>
declare
Octet : constant Stream_Element := Data (Pointer);
Socket : WebSocket_Data renames Client.WebSocket;
begin
if 0 = (Octet and 2#1000_0000#) then
Raise_Exception
( Data_Error'Identity,
"Mask bit must be set"
);
end if;
Socket.Frame_Length :=
Stream_Element_Count (Octet and 2#0111_1111#);
if Socket.Frame_Type >= 8 then -- A control frame
if Socket.Frame_Length > 125 then
Raise_Exception
( Data_Error'Identity,
"Control frame length is greater than 125"
);
end if;
Socket.Frame := Socket.Control'Unchecked_Access;
declare
Frame : WebSocket_Message renames
Socket.Frame.all;
begin
Frame.Type_Of := Socket.Frame_Type;
Frame.Length := Socket.Frame_Length;
Frame.Pointer := 1;
Socket.Mask_Index := 0;
Client.Expecting := WebSocket_Mask;
end;
else -- A data frame
Socket.Frame := Socket.Data;
declare
Frame : WebSocket_Message renames
Socket.Frame.all;
begin
if Socket.Pending then -- A message is pending
if ( Socket.Frame_Type
/= WebSocket_Continunation_Type
)
then
Raise_Exception
( Data_Error'Identity,
"Missing message continuation frame"
);
end if;
else -- A new frame
Frame.Type_Of := Socket.Frame_Type;
Frame.Length := 0;
Frame.Pointer := 1;
if ( Socket.Frame_Type
= WebSocket_Continunation_Type
)
then
Raise_Exception
( Data_Error'Identity,
"Unsolicited continuation frame"
);
end if;
end if;
Socket.Pending := not Socket.Final;
if Socket.Frame_Length < 126 then
Frame.Length :=
Frame.Length + Socket.Frame_Length;
Socket.Mask_Index := 0;
Client.Expecting := WebSocket_Mask;
else
if Socket.Frame_Length = 126 then
Socket.Length_Count := 2; -- Two more
else
Socket.Length_Count := 8; -- Eight more
end if;
Socket.Frame_Length := 0;
Client.Expecting := WebSocket_Length_Ex;
end if;
end;
end if;
Pointer := Pointer + 1;
end;
when WebSocket_Length_Ex =>
declare
Socket : WebSocket_Data renames Client.WebSocket;
Frame : WebSocket_Message renames Socket.Frame.all;
begin
Socket.Frame_Length :=
( Socket.Frame_Length * 256
+ Stream_Element_Count (Data (Pointer))
);
if ( not Socket.Chunked
and then
Socket.Frame_Length > Socket.Max_Length
)
then
Raise_Exception
( Status_Error'Identity,
"Data message length exceeds the limit set"
);
end if;
if Socket.Length_Count = 1 then
Frame.Length := Frame.Length + Socket.Frame_Length;
if ( not Socket.Chunked
and then
Frame.Length > Socket.Max_Length
)
then
Raise_Exception
( Status_Error'Identity,
"Data message length exceeds the limit set"
);
end if;
Socket.Mask_Index := 0;
Client.Expecting := WebSocket_Mask;
else
Socket.Length_Count := Socket.Length_Count - 1;
end if;
Pointer := Pointer + 1;
end;
when WebSocket_Mask =>
declare
Socket : WebSocket_Data renames Client.WebSocket;
begin
Socket.Mask (Socket.Mask_Index) := Data (Pointer);
Socket.Mask_Index := Socket.Mask_Index + 1;
Pointer := Pointer + 1;
if Socket.Mask_Index = 0 then
if Socket.Frame.Length > 0 then
Client.Expecting := WebSocket_Payload_Data;
else -- No payload data
Client.Expecting := WebSocket_Header;
if Socket.Final then
WebSocket_Message_End;
end if;
end if;
end if;
end;
when WebSocket_Payload_Data =>
declare
Socket : WebSocket_Data renames Client.WebSocket;
Frame : WebSocket_Message renames Socket.Frame.all;
begin
while Pointer <= Data'Last loop
exit when Frame.Pointer > Frame.Length;
if Socket.Chunked then
if Frame.Pointer > Frame.Data'Last then
if Socket.Duplex then
Socket.Context := Current_Task;
end if;
if Socket.Frame_Type = WebSocket_Binary_Type then
if Client.Trace_Body then
Trace
( Client,
( "WebSocket received binary "
& "message part ["
& Image (Frame.Data)
& "]"
) );
end if;
WebSocket_Received_Part
( HTTP_Client'Class (Client),
Frame.Data (1..Frame.Pointer - 1)
);
else
if Client.Trace_Body then
Trace
( Client,
( "WebSocket received text "
& "message part ["
& To_String (Frame.Data)
& "]"
) );
end if;
WebSocket_Received_Part
( HTTP_Client'Class (Client),
To_String (Frame.Data)
);
end if;
Frame.Pointer := Frame.Data'First;
Frame.Length :=
Frame.Length - Frame.Data'Length;
end if;
end if;
Frame.Data (Frame.Pointer) :=
( Data (Pointer)
xor
Socket.Mask (Socket.Mask_Index)
);
Socket.Mask_Index := Socket.Mask_Index + 1;
Frame.Pointer := Frame.Pointer + 1;
Pointer := Pointer + 1;
end loop;
if Frame.Pointer > Frame.Length then
Client.Expecting := WebSocket_Header;
if Socket.Final then
WebSocket_Message_End;
end if;
end if;
end;
end case;
end loop;
exception
when Error : others =>
if Client.WebSocket.State /= Closed_Socket then
if Client.Trace_Body then
Trace
( Client,
"WebSocket error " & Exception_Message (Error)
);
end if;
begin
WebSocket_Error (HTTP_Client'Class (Client), Error);
exception
when Error : others =>
Trace
( Client,
( "WebSocket error callback fault: "
& Exception_Information (Error)
) );
end;
WebSocket_Cleanup (Client);
end if;
raise;
end Received;
procedure Receive_Body_Tracing
( Client : in out HTTP_Client;
Enable : Boolean
) is
begin
Client.Trace_Body := Enable;
end Receive_Body_Tracing;
procedure Receive_Header_Tracing
( Client : in out HTTP_Client;
Enable : Boolean
) is
begin
Client.Trace_Header := Enable;
end Receive_Header_Tracing;
procedure Receive_Header_Line
( Client : in out HTTP_Client'Class;
Data : Stream_Element_Array;
Pointer : in out Stream_Element_Offset;
Handler : Completion
) is
begin
Get_Header_Line : loop
Client.Start := Pointer;
Feed
( Client.Data.List (Client.Data.Current).all,
Data,
Pointer,
Client,
Client.State
);
Client.Fed :=
Client.Fed + Unsigned_64 (Pointer - Client.Start);
if Client.State = 0 then -- Done with this item
Client.Data.Current := Client.Data.Current + 1;
while Client.Data.Current > Client.Data.Length loop
if Client.Data.Caller = null then
Client.Data.Current := 1;
Handler (Client);
exit Get_Header_Line;
end if;
Client.State := Client.Data.State; -- Restore state
Client.Data := Client.Data.Caller;
if Client.State /= 0 then
End_Of_Subsequence
( Client.Data.List (Client.Data.Current).all,
Data,
Pointer,
Client,
Client.State
);
exit when Client.State /= 0;
end if;
Client.Data.Current := Client.Data.Current + 1;
end loop;
else
exit when Pointer > Data'Last; -- All data consumed
Raise_Exception
( Status_Error'Identity,
( "Unprocessed data left when after return from "
& Expanded_Name
( Client.Data.List (Client.Data.Current).all'Tag
) ) );
end if;
end loop Get_Header_Line;
end Receive_Header_Line;
procedure Receive_Multipart_Line
( Client : in out HTTP_Client'Class;
Data : Stream_Element_Array;
Pointer : in out Stream_Element_Offset;
Handler : Completion
) is
begin
Get_Header_Line : while Client.Data_Length > 0 loop
if Client.Data_Length > Data'Last - Pointer + 1 then
declare
Start : constant Stream_Element_Offset := Pointer;
Slice : Stream_Element_Array renames
Data (Pointer..Data'Last);
begin
exit when Slice'Length = 0;
Feed
( Client.Data.List (Client.Data.Current).all,
Slice,
Pointer,
Client,
Client.State
);
Client.Fed := Client.Fed + Unsigned_64 (Pointer - Start);
Client.Data_Length :=
Client.Data_Length - Pointer + Start;
end;
else
declare
Start : constant Stream_Element_Offset := Pointer;
Slice : Stream_Element_Array renames
Data (Pointer..Pointer + Client.Data_Length - 1);
begin
exit when Slice'Length = 0;
Feed
( Client.Data.List (Client.Data.Current).all,
Slice,
Pointer,
Client,
Client.State
);
Client.Fed := Client.Fed + Unsigned_64 (Pointer - Start);
Client.Data_Length :=
Client.Data_Length - Pointer + Start;
end;
end if;
if Client.State = 0 then -- Done with this item
Client.Data.Current := Client.Data.Current + 1;
while Client.Data.Current > Client.Data.Length loop
if Client.Data.Caller = null then
Client.Data.Current := 1;
Handler (Client);
exit Get_Header_Line;
end if;
Client.Data := Client.Data.Caller;
Client.Data.Current := Client.Data.Current + 1;
end loop;
else
exit when Pointer > Data'Last;
Raise_Exception
( Status_Error'Identity,
( "Unprocessed data left when after return from "
& Expanded_Name
( Client.Data.List (Client.Data.Current).all'Tag
) ) );
end if;
end loop Get_Header_Line;
if Client.Data_Length = 0 then -- End of chunk
if Client.Chunked then -- Chunked receipt
Client.Chunk_Type := Client.Expecting;
Client.Expecting := Chunk_Line;
else -- Explicit length
if Client.Expecting = Multipart_Epilogue then
Client.Expecting := Header_Line;
Process_Request (Client);
else
Raise_Exception
( Data_Error'Identity,
"Malformed multipart body"
);
end if;
end if;
end if;
end Receive_Multipart_Line;
procedure Reply_HTML
( Client : in out HTTP_Client;
Code : Positive;
Reason : String;
Message : String;
Get : Boolean := True
) is
begin
Send_Status_Line (Client, Code, Reason);
Send_Date (Client);
Send_Content_Type (Client, "text/html");
Send_Connection (Client, False);
if Get then
Send_Body (Client, Message);
end if;
end Reply_HTML;
procedure Reply_Text
( Client : in out HTTP_Client;
Code : Positive;
Reason : String;
Message : String;
Get : Boolean := True
) is
begin
Send_Status_Line (Client, Code, Reason);
Send_Date (Client);
Send_Content_Type (Client, "text/plain");
Send_Connection (Client, False);
if Get then
Send_Body (Client, Message);
end if;
end Reply_Text;
procedure Send
( Client : in out HTTP_Client;
Message : String
) is
Pointer : Integer := Message'First;
begin
Send (Client, Message, Pointer);
if Pointer <= Message'Last then
Raise_Exception
( Data_Error'Identity,
( "Output buffer overrun, "
& Image (Queued_To_Send (Client))
& " elements queued, space for at least more "
& Image (Message'Last - Pointer + 1)
& " requred (available "
& Image (Available_To_Send (Client))
& ")"
) );
end if;
end Send;
procedure Send
( Client : in out HTTP_Client;
Message : Stream_Element_Array
) is
Pointer : Stream_Element_Offset := Message'First;
begin
Send (Client, Message, Pointer);
if Pointer <= Message'Last then
Raise_Exception
( Data_Error'Identity,
( "Output buffer overrun, "
& Image (Queued_To_Send (Client))
& " elements queued, space for at least more "
& Image (Message'Last - Pointer + 1)
& " requred (available "
& Image (Available_To_Send (Client))
& ")"
) );
end if;
end Send;
procedure Send_Accept_Ranges
( Client : in out HTTP_Client;
Accept_Ranges : Boolean
) is
begin
if Accept_Ranges then
Send (Client, "Accept-Ranges: bytes" & CRLF);
else
Send (Client, "Accept-Ranges: none" & CRLF);
end if;
end Send_Accept_Ranges;
procedure Send_Age (Client : in out HTTP_Client; Age : Duration) is
Value : Unsigned_32;
begin
if Age = Duration'Last then
Send (Client, "Age: 2147483648" & CRLF);
elsif Age <= 0.0 then
Send (Client, "Age: 0" & CRLF);
else
Value := Unsigned_32 (Age);
Send (Client, "Age:" & Unsigned_32'Image (Value) & CRLF);
end if;
exception
when Constraint_Error =>
Send (Client, "Age: 2147483648" & CRLF);
end Send_Age;
procedure Send_Allow
( Client : in out HTTP_Client;
Allowed : HTTP_Allowed
) is
First : Boolean := True;
Text : String (1..120);
Pointer : Integer := Text'First;
begin
Put (Text, Pointer, "Allow:");
for Index in 1..GetSize (Commands) loop
if Allowed (GetTag (Commands, Index)) then
if First then
First := False;
else
Put (Text, Pointer, ", ");
end if;
Put (Text, Pointer, GetName (Commands, Index));
end if;
end loop;
Put (Text, Pointer, CRLF);
Send (Client, Text (Text'First..Pointer - 1));
end Send_Allow;
procedure Send_Body
( Client : in out HTTP_Client;
Stream : access Root_Stream_Type'Class;
Get : Boolean := True
) is
begin
Client.Stream := Stream.all'Unchecked_Access;
Send (Client, "Transfer-Encoding: chunked" & CRLF);
if Get then
Send (Client, CRLF);
Client.Chunked := True;
Continue (Client, Stream_Chunk'Access);
else
Body_Sent (Client, Client.Stream.all, Get);
end if;
end Send_Body;
procedure Send_Body
( Client : in out HTTP_Client;
Stream : access Root_Stream_Type'Class;
Length : Stream_Element_Count;
Get : Boolean := True
) is
begin
Client.Stream := Stream.all'Unchecked_Access;
Send (Client, "Content-Length: " & Image (Length) & CRLF);
Client.Data_Length := Length;
if Get then
Send (Client, CRLF);
Client.Chunked := False;
Continue (Client, Stream_Chunk'Access);
else
Body_Sent (Client, Client.Stream.all, Get);
end if;
end Send_Body;
procedure Send_Body
( Client : in out HTTP_Client;
Content : access Content_Source'Class;
Get : Boolean := True
) is
begin
Client.Source := Content.all'Unchecked_Access;
Send (Client, "Transfer-Encoding: chunked" & CRLF);
if Get then
Send (Client, CRLF);
Client.Chunked := True;
Continue (Client, Content_Chunk'Access);
end if;
end Send_Body;
procedure Send_Body
( Client : in out HTTP_Client;
Content : access Content_Source'Class;
Length : Stream_Element_Count;
Get : Boolean := True
) is
begin
Client.Source := Content.all'Unchecked_Access;
Send (Client, "Content-Length: " & Image (Length) & CRLF);
Client.Data_Length := Length;
if Get then
Send (Client, CRLF);
Client.Chunked := False;
Continue (Client, Content_Chunk'Access);
end if;
end Send_Body;
procedure Send_Body
( Client : in out HTTP_Client;
Get : Boolean := True
) is
begin
Send_Body
( Client => Client,
Stream => Client.Body_Content'Unchecked_Access,
Length => Accumulated_Body_Length (Client),
Get => Get
);
end Send_Body;
procedure Send_Body
( Client : in out HTTP_Client;
Content : String;
Get : Boolean := True
) is
begin
Send_Length (Client, Natural'(Content'Length));
Send (Client, CRLF);
if Get then
Send (Client, Content);
Send (Client, CRLF);
end if;
end Send_Body;
procedure Send_Connection
( Client : in out HTTP_Client;
Persistent : Boolean := True
) is
begin
if ( 0 = (Client.Connection and Connection_Close)
and
Persistent
) then
Send (Client, "Connection: keep-alive" & CRLF);
else
Client.Connection := Client.Connection or Connection_Close;
Send (Client, "Connection: close" & CRLF);
end if;
end Send_Connection;
procedure Send_Content_Range
( Client : in out HTTP_Client;
Content_Range : String := "none"
) is
begin
Send (Client, "Content-Range: " & Content_Range & CRLF);
end Send_Content_Range;
procedure Send_Content_Range
( Client : in out HTTP_Client;
From : Stream_Element_Count;
To : Stream_Element_Count;
Length : Stream_Element_Count
) is
begin
Send
( Client,
( "Content-Range: "
& Image (From)
& '-'
& Image (To)
& '/'
& Image (Length)
& CRLF
) );
end Send_Content_Range;
procedure Send_Content_Type
( Client : in out HTTP_Client;
Media : String := "text/plain";
Charset : String := "UTF-8"
) is
begin
Send
( Client,
"Content-Type: " & Media & "; charset=" & Charset & CRLF
);
end Send_Content_Type;
procedure Send_Date
( Client : in out HTTP_Client;
Date : Time := Clock
) is
begin
Send (Client, "Date: " & To_HTTP (Date) & CRLF);
end Send_Date;
procedure Send_If_Modified_Since
( Client : in out HTTP_Client;
Date : Time
) is
begin
Send (Client, "If-Modified-Since: " & To_HTTP (Date) & CRLF);
end Send_If_Modified_Since;
procedure Send_If_Unmodified_Since
( Client : in out HTTP_Client;
Date : Time
) is
begin
Send (Client, "If-Unmodified-Since: " & To_HTTP (Date) & CRLF);
end Send_If_Unmodified_Since;
procedure Send_Last_Modified
( Client : in out HTTP_Client;
Date : Time
) is
begin
Send (Client, "Last-Modified: " & To_HTTP (Date) & CRLF);
end Send_Last_Modified;
procedure Send_Length
( Client : in out HTTP_Client;
Length : Natural
) is
begin
Send (Client, "Content-Length: " & Image (Length) & CRLF);
end Send_Length;
procedure Send_Length
( Client : in out HTTP_Client;
Length : Stream_Element_Count
) is
begin
Send (Client, "Content-Length: " & Image (Length) & CRLF);
end Send_Length;
procedure Send_Server (Client : in out HTTP_Client) is
begin
Send
( Client,
"Server: " & Get_Name (HTTP_Client'Class (Client)) & CRLF
);
end Send_Server;
procedure Send_Status_Line
( Client : in out HTTP_Client;
Code : Positive;
Text : String;
Version : String := "HTTP/1.1"
) is
begin
Send (Client, Version & " " & Image (Code) & ' ');
Send (Client, Text);
Send (Client, CRLF);
end Send_Status_Line;
procedure Sent (Client : in out HTTP_Client) is
Chain : Action;
begin
if Queued_To_Send (Client) = 0 then
Chain := Client.Chain;
Client.Chain := null;
if Chain /= null then
Chain (Client);
elsif 0 /= (Client.Connection and Connection_Close) then
raise Connection_Error; -- I am done
else
case Client.WebSocket.State is
when Open_Socket | Closed_Socket =>
null;
when Closing_Socket =>
WebSocket_Cleanup (Client);
end case;
end if;
end if;
exception
when Error : others =>
if Client.WebSocket.State /= Closed_Socket then
if Client.Trace_Body then
Trace
( Client,
"WebSocket error " & Exception_Message (Error)
);
end if;
begin
WebSocket_Error (HTTP_Client'Class (Client), Error);
exception
when Error : others =>
Trace
( Client,
( "WebSocket error callback fault: "
& Exception_Information (Error)
) );
end;
WebSocket_Cleanup (Client);
end if;
raise;
end Sent;
procedure Send_Content
( Client : in out HTTP_Client;
Data : Stream_Element_Array
) is
Length : constant Stream_Element_Count :=
Available_To_Send (Client);
begin
if Data'Length = 0 then
return;
end if;
if Client.Stub = null and then Length >= Data'Length then
Send (Client, Data); -- Send all at once
else -- Send as much as we can
Send (Client, Data (Data'First..Data'First + Length - 1));
Queue_Content (Client, Data (Data'First + Length..Data'Last));
end if;
end Send_Content;
procedure Send_Content
( Client : in out HTTP_Client;
Data : String
) is
Length : constant Stream_Element_Count :=
Available_To_Send (Client);
begin
if Data'Length = 0 then
return;
end if;
if Client.Stub = null and then Length >= Data'Length then
Send (Client, Data);
else -- Send as much as we can
Send
( Client,
Data (Data'First..Data'First + Integer (Length) - 1)
);
Queue_Content
( Client,
Data (Data'First + Integer (Length)..Data'Last)
);
end if;
end Send_Content;
procedure Set_Allowed
( Client : in out HTTP_Client;
Allowed : HTTP_Allowed
) is
begin
Client.Allowed := Allowed;
end Set_Allowed;
procedure Set_Failed
( Client : in out HTTP_Client;
Error : Exception_Occurrence
) is
begin
Client.Mutex.Failed (Error);
end Set_Failed;
procedure Skip (Source : String; Pointer : in out Integer) is
begin
while Pointer <= Source'Last loop
case Source (Pointer) is
when ' ' | Character'Val (9) =>
exit;
when others =>
Pointer := Pointer + 1;
end case;
end loop;
end Skip;
procedure Status_Line_Received
( Client : in out HTTP_Client;
Method : HTTP_Method;
Version : HTTP_Version
) is
begin
Client.Method := Method;
Client.Version := Version;
end Status_Line_Received;
procedure Status_Line_Received
( Client : in out HTTP_Client;
Method : HTTP_Method;
Path : String;
Query : String;
Version : HTTP_Version
) is
type Status_Ptr is access Status_Line;
for Status_Ptr'Storage_Pool use Client.Pool;
Ptr : constant Status_Ptr :=
new Status_Line'
( Kind => File,
Path_Length => Path'Length,
Host_Length => 0,
Query_Length => Query'Length,
File => Path,
Query => Query
);
begin
Client.Method := Method;
Client.Version := Version;
Client.Status := Ptr.all'Unchecked_Access;
end Status_Line_Received;
procedure Status_Line_Received
( Client : in out HTTP_Client;
Scheme : Scheme_Type;
Method : HTTP_Method;
Host : String;
Port : Port_Type;
Path : String;
Query : String;
Version : HTTP_Version
) is
type Status_Ptr is access Status_Line;
for Status_Ptr'Storage_Pool use Client.Pool;
Ptr : constant Status_Ptr :=
new Status_Line'
( Kind => URI,
Scheme => Scheme,
Path_Length => Path'Length,
Host_Length => Host'Length,
Query_Length => Query'Length,
Host => Host,
Port => Port,
Path => Path,
Query => Query
);
begin
Client.Method := Method;
Client.Version := Version;
Client.Status := Ptr.all'Unchecked_Access;
end Status_Line_Received;
procedure Stream_Chunk (Client : in out HTTP_Client'Class) is
Done : Boolean;
begin
if Client.Stream /= null then
if Client.Chunked then -- Chunked transfer
Send
( Client => Client,
Stream => Client.Stream.all,
Reserve => 18,
Get_Prefix => Get_Prefix'Access,
Get_Suffix => Get_Suffix'Access,
End_Of_Stream => Done
);
if Done then
Body_Sent (Client, Client.Stream.all, True);
Client.Stream := null;
else
Continue (Client, Stream_Chunk'Access);
end if;
else
Send
( Client => Client,
Stream => Client.Stream.all,
Count => Client.Data_Length,
End_Of_Stream => Done
);
if Done then
if Client.Data_Length > 0 then
Raise_Exception
( Data_Error'Identity,
( "Missing "
& Image (Client.Data_Length)
& " streamed data to transfer"
) );
end if;
Body_Sent (Client, Client.Stream.all, True);
Client.Stream := null;
else
if Client.Data_Length = 0 then
Body_Sent (Client, Client.Stream.all, True);
Client.Stream := null;
else
Continue (Client, Stream_Chunk'Access);
end if;
end if;
end if;
end if;
end Stream_Chunk;
function To_Escaped (Name : String) return String is
Length : Natural := 0;
begin
for Index in Name'Range loop
case Name (Index) is
when 'A'..'Z' | 'a'..'z' | '0'..'9' |
'-' | '_' | '.' | '!' | '~' | '*' | ''' | '(' | ')' =>
Length := Length + 1;
when others =>
Length := Length + 3;
end case;
end loop;
declare
Pointer : Integer := 1;
Result : String (1..Length);
begin
for Index in Name'Range loop
case Name (Index) is
when 'A'..'Z' | 'a'..'z' | '0'..'9' |
'-' | '_' | '.' | '!' | '~' | '*' |
''' | '(' | ')' =>
Result (Pointer) := Name (Index);
Pointer := Pointer + 1;
when others =>
Result (Pointer) := '%';
Pointer := Pointer + 1;
Strings_Edit.Integers.Put
( Destination => Result,
Pointer => Pointer,
Value => Character'Pos (Name (Index)),
Base => 16,
Field => 2,
Justify => Right,
Fill => '0'
);
end case;
end loop;
return Result;
end;
end To_Escaped;
function To_Flags (Value : String) return Connection_Flags is
Result : Connection_Flags := 0;
Start : Integer := Value'First;
procedure Add (Field : String) is
Index : constant Integer := Locate (Connections, Trim (Field));
begin
if Index > 0 then
Result := Result or GetTag (Connections, Index);
end if;
end Add;
begin
for Pointer in Value'Range loop
if Value (Pointer) = ',' then
if Start <= Pointer - 1 then
Add (Value (Start..Pointer - 1));
end if;
Start := Pointer + 1;
end if;
end loop;
if Start <= Value'Last then
Add (Value (Start..Value'Last));
end if;
return Result;
end To_Flags;
function To_HTML (Text : String) return String is
use Strings_Edit.UTF8;
Length : Natural := 0;
Pointer : Integer := Text'First;
Code : UTF8_Code_Point;
begin
while Pointer <= Text'Last loop
Get (Text, Pointer, Code);
case Code is
when Character'Pos ('<') | Character'Pos ('>') =>
Length := Length + 4;
when Character'Pos ('&') =>
Length := Length + 5;
when Character'Pos ('"') =>
Length := Length + 6;
when 32..33 | 35..37 | 39..59 | 61 | 63..126 =>
Length := Length + 1;
when others =>
if Code <= 16#F# then
Length := Length + 5;
elsif Code <= 16#FF# then
Length := Length + 6;
elsif Code <= 16#FFF# then
Length := Length + 7;
elsif Code <= 16#FFFF# then
Length := Length + 8;
elsif Code <= 16#FFFFF# then
Length := Length + 9;
else
Length := Length + 10;
end if;
end case;
end loop;
Pointer := Text'First;
declare
Result : String (1..Length);
Index : Integer := 1;
begin
while Pointer <= Text'Last loop
Get (Text, Pointer, Code);
case Code is
when Character'Pos ('<') =>
Put (Result, Index, "<");
when Character'Pos ('>') =>
Put (Result, Index, ">");
when Character'Pos ('&') =>
Put (Result, Index, "&");
when Character'Pos ('"') =>
Put (Result, Index, """);
when 32..33 | 35..37 | 39..59 | 61 | 63..126 =>
Result (Index) := Character'Val (Code);
Index := Index + 1;
when others =>
Put (Result, Index, "&#x");
Put (Result, Index, Integer (Code), Base => 16);
Put (Result, Index, ";");
end case;
end loop;
return Result (1..Index - 1);
end;
end To_HTML;
procedure Trace
( Client : in out HTTP_Client;
Message : String
) is
begin
Trace
( Client.Listener.Factory.all,
( Get_Client_Name (Client.Listener.Factory.all, Client)
& ' '
& Message
) );
end Trace;
function Validate_Key
( Client : HTTP_Client;
Key : String
) return Boolean is
begin
return True;
end Validate_Key;
function Value (Text : String) return Header_Value is
Index : constant Integer := Locate (Request_Headers, Text);
begin
if Index > 0 then
return
( None => False,
Header => GetTag (Request_Headers, Index)
);
else
return (None => True);
end if;
end Value;
procedure WebSocket_Blocking_Send
( Client : in out HTTP_Client'Class;
Data : Stream_Element_Array;
First : Boolean;
Last : Boolean
) is
Pointer : Stream_Element_Offset := Data'First;
Next : Stream_Element_Offset;
begin
if First then
Client.Mutex.Seize;
end if;
begin
if Data'Length > 0 then
while Pointer <= Data'Last loop
Push (Client, Data (Pointer..Data'Last), Next);
if Next < Pointer then
raise Connection_Error;
end if;
if Client.Trace_Body then
Trace
( Client,
( "WebSocket message part sent ["
& Image (Data (Pointer..Next))
& "] "
& Image (Pointer)
& ".."
& Image (Next)
& "/"
& Image (Data'Last)
) );
end if;
Pointer := Next + 1;
end loop;
if Last then
Client.Mutex.Set (Idle);
end if;
end if;
exception
when Error : Connection_Error =>
Set_Failed (Client, Error);
Raise_Exception
( End_Error'Identity,
"Connection closed by peer"
);
when Error : others =>
Set_Failed (Client, Error);
raise;
end;
end WebSocket_Blocking_Send;
procedure WebSocket_Finalize (Client : in out HTTP_Client) is
begin
null;
end WebSocket_Finalize;
procedure WebSocket_Cleanup (Client : in out HTTP_Client'Class) is
Socket : WebSocket_Data renames Client.WebSocket;
begin
if Socket.State /= Closed_Socket then
if Client.Trace_Body then
Trace (Client, "WebSocket closing connection ...");
end if;
if Socket.Duplex then
Client.Mutex.Set (Disabled);
end if;
begin
if Client.Trace_Body then
Trace (Client, "WebSocket finalizing ...");
end if;
WebSocket_Finalize (Client);
exception
when Error : others =>
Trace
( Client,
( "WebSocket finalization callback fault: "
& Exception_Information (Error)
) );
end;
Set_Overlapped_Size (Client, 0); -- Disabe full-duplex mode
Client.Stub := null;
if Socket.Data /= null then
declare
type Message_Ptr is access WebSocket_Message;
for Message_Ptr'Storage_Pool use Client.Pool;
function To_Message_Ptr is
new Ada.Unchecked_Conversion
( WebSocket_Message_Ptr,
Message_Ptr
);
procedure Free is
new Ada.Unchecked_Deallocation
( WebSocket_Message,
Message_Ptr
);
Ptr : Message_Ptr := To_Message_Ptr (Socket.Data);
begin
Free (Ptr);
Socket.Data := null;
end;
end if;
Socket.State := Closed_Socket;
Socket.Pending := False;
Socket.Duplex := False;
Client.Expecting := Request_Line;
end if;
end WebSocket_Cleanup;
procedure WebSocket_Close
( Client : in out HTTP_Client;
Status : WebSocket_Status := WebSocket_Normal_Closure;
Message : String := ""
) is
begin
if Message'Length > 123 then
Raise_Exception
( Constraint_Error'Identity,
"WebSocket closing message is longer than 123 bytes"
);
elsif Client.WebSocket.State = Open_Socket then
declare
Header : constant Stream_Element_Array :=
( 2#1000_0000# or WebSocket_Close_Type,
Stream_Element (Message'Length + 2),
Stream_Element (Status / 256),
Stream_Element (Status mod 256)
);
begin
if Client.WebSocket.Duplex then
WebSocket_Send (Client, Header & From_String (Message));
Client.Mutex.Set (Closing);
Client.WebSocket.State := Closing_Socket;
else
Send_Content (Client, Header);
Send_Content (Client, Message);
if Queued_To_Send (Client) = 0 then
WebSocket_Cleanup (Client);
else
Client.WebSocket.State := Closing_Socket;
end if;
end if;
end;
else
Raise_Exception (End_Error'Identity, "No WebSocket open");
end if;
end WebSocket_Close;
procedure WebSocket_Closed
( Client : in out HTTP_Client;
Status : WebSocket_Status;
Message : String
) is
begin
null;
end WebSocket_Closed;
procedure WebSocket_Error
( Client : in out HTTP_Client;
Error : Exception_Occurrence
) is
begin
null;
end WebSocket_Error;
procedure WebSocket_Initialize (Client : in out HTTP_Client) is
begin
null;
end WebSocket_Initialize;
function WebSocket_Header
( Length : Stream_Element_Count;
Frame : WebSocket_Frame_Type
) return Stream_Element_Array is
begin
if Length < 126 then
return
( 1 => 2#1000_0000# or Frame,
2 => Stream_Element (Length)
);
elsif Length < 2**16 then
return
( 1 => 2#1000_0000# or Frame,
2 => 126,
3 => Stream_Element (Length / 256),
4 => Stream_Element (Length mod 256)
);
else
declare
use Big_Endian.Unsigneds;
Header : Stream_Element_Array (1..10);
Pointer : Stream_Element_Offset := 3;
begin
Header (1) := 2#1000_0000# or Frame;
Header (2) := 127;
Put (Header, Pointer, Unsigned_64 (Length));
return Header;
end;
end if;
end WebSocket_Header;
function WebSocket_Open
( Client : access HTTP_Client
) return WebSocket_Accept is
begin
return
( Accepted => False,
Code => 501,
Length => Default_Response'Length,
Reason => Default_Response
);
end WebSocket_Open;
procedure WebSocket_Received
( Client : in out HTTP_Client;
Message : Stream_Element_Array
) is
begin
null;
end WebSocket_Received;
procedure WebSocket_Received
( Client : in out HTTP_Client;
Message : String
) is
begin
null;
end WebSocket_Received;
procedure WebSocket_Received_Part
( Client : in out HTTP_Client;
Message : Stream_Element_Array
) is
begin
null;
end WebSocket_Received_Part;
procedure WebSocket_Received_Part
( Client : in out HTTP_Client;
Message : String
) is
begin
null;
end WebSocket_Received_Part;
procedure WebSocket_Send
( Client : in out HTTP_Client;
Message : Stream_Element_Array
) is
Header : constant Stream_Element_Array :=
WebSocket_Header (Message'Length, WebSocket_Binary_Type);
begin
if Client.WebSocket.Duplex then
if Client.WebSocket.Context = Current_Task then
if Client.WebSocket.State = Open_Socket then
declare
Seized : Boolean;
begin
Client.Mutex.Grab (Seized);
if Seized then
begin
Send_Content (Client, Header);
Send_Content (Client, Message);
exception
when others =>
Client.Mutex.Release;
raise;
end;
else
Queue_Content (Client, Header);
Queue_Content (Client, Message);
end if;
end;
else
Raise_Exception
( End_Error'Identity,
"No WebSocket open"
);
end if;
else
WebSocket_Blocking_Send (Client, Header, True, False);
WebSocket_Blocking_Send (Client, Message, False, True);
end if;
else
if Client.WebSocket.State = Open_Socket then
Send_Content (Client, Header);
Send_Content (Client, Message);
else
Raise_Exception (End_Error'Identity, "No WebSocket open");
end if;
end if;
end WebSocket_Send;
procedure WebSocket_Send
( Client : in out HTTP_Client;
Message : String
) is
Header : constant Stream_Element_Array :=
WebSocket_Header (Message'Length, WebSocket_Text_Type);
begin
if Client.WebSocket.Duplex then
if Client.WebSocket.Context = Current_Task then
if Client.WebSocket.State = Open_Socket then
declare
Seized : Boolean;
begin
Client.Mutex.Grab (Seized);
if Seized then
begin
Send_Content (Client, Header);
Send_Content (Client, Message);
exception
when others =>
Client.Mutex.Release;
raise;
end;
else
Queue_Content (Client, Header);
Queue_Content (Client, Message);
end if;
end;
else
Raise_Exception
( End_Error'Identity,
"No WebSocket open"
);
end if;
else
WebSocket_Blocking_Send (Client, Header, True, False);
declare
Pointer : Integer := Message'First;
begin
while Message'Last + 1 - Pointer > Block_Size loop
WebSocket_Blocking_Send
( Client,
From_String
( Message (Pointer..Pointer + Block_Size - 1)
),
False,
False
);
Pointer := Pointer + Block_Size;
end loop;
WebSocket_Blocking_Send
( Client,
From_String (Message (Pointer..Message'Last)),
False,
True
);
end;
end if;
else
if Client.WebSocket.State = Open_Socket then
Send_Content (Client, Header);
Send_Content (Client, Message);
else
Raise_Exception (End_Error'Identity, "No WebSocket open");
end if;
end if;
end WebSocket_Send;
procedure Write
( Client : in out HTTP_Client;
Factory : in out Connections_Factory'Class;
Blocked : out Boolean
) is
begin
if Client.WebSocket.Duplex then
declare
Seized : Boolean;
begin
Client.Mutex.Grab (Seized);
if Seized then
begin
Write (Connection (Client), Factory, Blocked);
if Blocked or else Queued_To_Send (Client) = 0 then
Client.Mutex.Release;
end if;
exception
when others =>
Client.Mutex.Release;
raise;
end;
else
Blocked := False; -- Try later
end if;
end;
else
Write (Connection (Client), Factory, Blocked);
end if;
end Write;
procedure Write
( Stream : in out Content_Stream;
Item : Stream_Element_Array
) is
begin
null;
end Write;
procedure Write
( Stream : access Root_Stream_Type'Class;
Item : Content_Stream
) is
begin
null;
end Write;
procedure Write
( Stream : access Root_Stream_Type'Class;
Item : Data_Pool
) is
begin
null;
end Write;
procedure Write
( Stream : access Root_Stream_Type'Class;
Item : Content_Destination
) is
begin
null;
end Write;
procedure Write
( Stream : access Root_Stream_Type'Class;
Item : WebSocket_Data
) is
begin
null;
end Write;
procedure Write
( Stream : access Root_Stream_Type'Class;
Item : Send_Mutex
) is
begin
null;
end Write;
protected body Send_Mutex is
procedure Failed (Error : Exception_Occurrence) is
begin
Set_Failed (State_Machine (Client.all), Error);
if State in Idle..Task_Sending then
State := Server_Sending;
end if;
end Failed;
function Get_Status return Duplex_Status is
begin
return State;
end Get_Status;
procedure Grab (Seized : out Boolean) is
begin
case State is
when Disabled | Closing | Server_Sending =>
Seized := True;
when Idle =>
State := Server_Sending;
Seized := True;
when Task_Sending =>
Seized := False;
end case;
end Grab;
procedure Release is
begin
case State is
when Disabled | Closing | Idle =>
null;
when Task_Sending | Server_Sending =>
State := Idle;
end case;
end Release;
entry Seize when State in Disabled..Idle is
begin
case State is
when Idle =>
State := Task_Sending;
when Closing =>
Raise_Exception
( End_Error'Identity,
"WebSocket is being closed"
);
when others =>
Raise_Exception
( End_Error'Identity,
"No WebSocket open"
);
end case;
end Seize;
procedure Set (New_State : Duplex_Status) is
begin
State := New_State;
end Set;
end Send_Mutex;
begin
Add (Commands, "CONNECT", HTTP_CONNECT);
Add (Commands, "DELETE", HTTP_DELETE);
Add (Commands, "GET", HTTP_GET);
Add (Commands, "HEAD", HTTP_HEAD);
Add (Commands, "OPTIONS", HTTP_OPTIONS);
Add (Commands, "PATCH", HTTP_PATCH);
Add (Commands, "POST", HTTP_POST);
Add (Commands, "PUT", HTTP_PUT);
Add (Commands, "TRACE", HTTP_TRACE);
Add (Request_Headers, "Accept", Accept_Header);
Add (Request_Headers, "Accept-Charset", Accept_Charset_Header);
Add (Request_Headers, "Accept-Encoding", Accept_Encoding_Header);
Add (Request_Headers, "Accept-Language", Accept_Language_Header);
Add (Request_Headers, "Accept-Datetime", Accept_Datetime_Header);
Add (Request_Headers, "Allow", Allow_Header);
Add (Request_Headers, "Authorization", Authorization_Header);
Add (Request_Headers, "Cache-Control", Cache_Control_Header);
Add (Request_Headers, "Cookie", Cookie_Header);
Add (Request_Headers, "Connection", Connection_Header);
Add (Request_Headers, "Content-Disposition",
Content_Disposition_Header);
Add (Request_Headers, "Content-Encoding", Content_Encoding_Header);
Add (Request_Headers, "Content-Language", Content_Language_Header);
Add (Request_Headers, "Content-Length", Content_Length_Header);
Add (Request_Headers, "Content-Location", Content_Location_Header);
Add (Request_Headers, "Content-MD5", Content_MD5_Header);
Add (Request_Headers, "Content-Type", Content_Type_Header);
Add (Request_Headers, "Date", Date_Header);
Add (Request_Headers, "Expect", Expect_Header);
Add (Request_Headers, "Expires", Expires_Header);
Add (Request_Headers, "From", From_Header);
Add (Request_Headers, "Host", Host_Header);
Add (Request_Headers, "If-Match", If_Match_Header);
Add (Request_Headers, "If-Modified-Since", If_Modified_Since_Header);
Add (Request_Headers, "If-None-Match", If_None_Match_Header);
Add (Request_Headers, "If-Range", If_Range_Header);
Add (Request_Headers, "If-Unmodified-Since",
If_Unmodified_Since_Header);
Add (Request_Headers, "Last-Modified", Last_Modified_Header);
Add (Request_Headers, "Max-Forwards", Max_Forwards_Header);
Add (Request_Headers, "Origin", Origin_Header);
Add (Request_Headers, "Pragma", Pragma_Header);
Add (Request_Headers, "Proxy-Authorization",
Proxy_Authorization_Header);
Add (Request_Headers, "Range", Range_Header);
Add (Request_Headers, "Referer", Referer_Header);
Add (Request_Headers, "Sec-WebSocket-Extensions",
Sec_WebSocket_Extensions_Header);
Add (Request_Headers, "Sec-WebSocket-Key", Sec_WebSocket_Key_Header);
Add (Request_Headers, "Sec-WebSocket-Protocol",
Sec_WebSocket_Protocol_Header);
Add (Request_Headers, "Sec-WebSocket-Version",
Sec_WebSocket_Version_Header);
Add (Request_Headers, "TE", TE_Header);
Add (Request_Headers, "Trailer", Trailer_Header);
Add (Request_Headers, "Transfer-Encoding", Transfer_Encoding_Header);
Add (Request_Headers, "Upgrade", Upgrade_Header);
Add (Request_Headers, "Upgrade-Insecure-Requests",
Upgrade_Insecure_Requests);
Add (Request_Headers, "User-Agent", User_Agent_Header);
Add (Request_Headers, "Via", Via_Header);
Add (Request_Headers, "Warning", Warning_Header);
Add (Request_Headers, "X-CSRF-TOKEN", X_CSRF_Token_Header);
Add (Request_Headers, "X-Requested-By", X_Requested_By_Header);
Add (Request_Headers, "X-Requested-With", X_Requested_With_Header);
Add (Request_Headers, "X-XSRF-TOKEN", X_XSRF_Token_Header);
Add (Connections, "close", Connection_Close);
Add (Connections, "keep-alive", Connection_Persistent);
Add (Connections, "upgrade", Connection_Upgrade);
Add (Schemes, "aaa", Aaa_Scheme);
Add (Schemes, "aaas", Aaas_Scheme);
Add (Schemes, "about", About_Scheme);
Add (Schemes, "acap", Acap_Scheme);
Add (Schemes, "acct", Acct_Scheme);
Add (Schemes, "acr", Acr_Scheme);
Add (Schemes, "adiumxtra", Adiumxtra_Scheme);
Add (Schemes, "afp", AFP_Scheme);
Add (Schemes, "afs", AFS_Scheme);
Add (Schemes, "aim", Aim_Scheme);
Add (Schemes, "appdata", Appdata_Scheme);
Add (Schemes, "apt", APT_Scheme);
Add (Schemes, "attachment", Attachment_Scheme);
Add (Schemes, "aw", Aw_Scheme);
Add (Schemes, "barion", Barion_Scheme);
Add (Schemes, "beshare", Beshare_Scheme);
Add (Schemes, "bitcoin", Bitcoin_Scheme);
Add (Schemes, "blob", Blob_Scheme);
Add (Schemes, "bolo", Bolo_Scheme);
Add (Schemes, "browserext", Browserext_Scheme);
Add (Schemes, "callto", Callto_Scheme);
Add (Schemes, "cap", Cap_Scheme);
Add (Schemes, "chrome", Chrome_Scheme);
Add (Schemes, "chrome-extension", Chrome_Extension_Scheme);
Add (Schemes, "cid", Cid_Scheme);
Add (Schemes, "coap", Coap_Scheme);
Add (Schemes, "coap+tcp", Coap_Tcp_Scheme);
Add (Schemes, "coaps", Coaps_Scheme);
Add (Schemes, "coaps+tcp", Coaps_Tcp_Scheme);
Add (Schemes, "com-eventbrite-attendee",
Com_Eventbrite_Attendee_Scheme);
Add (Schemes, "content", Content_Scheme);
Add (Schemes, "crid", Crid_Scheme);
Add (Schemes, "cvs", CVS_Scheme);
Add (Schemes, "data", Data_Scheme);
Add (Schemes, "dav", Dav_Scheme);
Add (Schemes, "diaspora", Diaspora_Scheme);
Add (Schemes, "dict", Dict_Scheme);
Add (Schemes, "dis", DIS_Scheme);
Add (Schemes, "dlna-playcontainer", DLNA_Playcontainer_Scheme);
Add (Schemes, "dlna-playsingle", DLNA_Playsingle_Scheme);
Add (Schemes, "dns", DNS_Scheme);
Add (Schemes, "dntp", DNTP_Scheme);
Add (Schemes, "dtn", DTN_Scheme);
Add (Schemes, "dvb", DVB_Scheme);
Add (Schemes, "ed2k", Ed2k_Scheme);
Add (Schemes, "example", Example_Scheme);
Add (Schemes, "facetime", Facetime_Scheme);
Add (Schemes, "fax", Fax_Scheme);
Add (Schemes, "feed", Feed_Scheme);
Add (Schemes, "feedready", Feedready_Scheme);
Add (Schemes, "file", File_Scheme);
Add (Schemes, "filesystem", Filesystem_Scheme);
Add (Schemes, "finger", Finger_Scheme);
Add (Schemes, "fish", Fish_Scheme);
Add (Schemes, "ftp", FTP_Scheme);
Add (Schemes, "geo", Geo_Scheme);
Add (Schemes, "gg", Gg_Scheme);
Add (Schemes, "git", Git_Scheme);
Add (Schemes, "gizmoproject", Gizmoproject_Scheme);
Add (Schemes, "go", Go_Scheme);
Add (Schemes, "gopher", Gopher_Scheme);
Add (Schemes, "graph", Graph_Scheme);
Add (Schemes, "gtalk", Gtalk_Scheme);
Add (Schemes, "h323", H323_Scheme);
Add (Schemes, "ham", Ham_Scheme);
Add (Schemes, "hcp", HCP_Scheme);
Add (Schemes, "http", HTTP_Scheme);
Add (Schemes, "https", HTTPS_Scheme);
Add (Schemes, "hxxp", HXXP_Scheme);
Add (Schemes, "hxxps", HXXPS_Scheme);
Add (Schemes, "hydrazone", Hydrazone_Scheme);
Add (Schemes, "iax", Iax_Scheme);
Add (Schemes, "icap", Icap_Scheme);
Add (Schemes, "icon", Icon_Scheme);
Add (Schemes, "im", Im_Scheme);
Add (Schemes, "imap", Imap_Scheme);
Add (Schemes, "info", Info_Scheme);
Add (Schemes, "iotdisco", Iotdisco_Scheme);
Add (Schemes, "ipn", IPN_Scheme);
Add (Schemes, "ipp", IPP_Scheme);
Add (Schemes, "ipps", IPPS_Scheme);
Add (Schemes, "irc", IRC_Scheme);
Add (Schemes, "irc6", IRC6_Scheme);
Add (Schemes, "ircs", IRCS_Scheme);
Add (Schemes, "iris", Iris_Scheme);
Add (Schemes, "iris.beep", Iris_Beep_Scheme);
Add (Schemes, "iris.lwz", Iris_LWZ_Scheme);
Add (Schemes, "iris.xpc", Iris_XPC_Scheme);
Add (Schemes, "iris.xpcs", Iris_XPCS_Scheme);
Add (Schemes, "isostore", Isostore_Scheme);
Add (Schemes, "itms", ITMS_Scheme);
Add (Schemes, "jabber", Jabber_Scheme);
Add (Schemes, "jar", Jar_Scheme);
Add (Schemes, "jms", Jms_Scheme);
Add (Schemes, "keyparc", Keyparc_Scheme);
Add (Schemes, "lastfm", Lastfm_Scheme);
Add (Schemes, "ldap", LDAP_Scheme);
Add (Schemes, "ldaps", LDAPS_Scheme);
Add (Schemes, "lvlt", LVLT_Scheme);
Add (Schemes, "magnet", Magnet_Scheme);
Add (Schemes, "mailserver", Mailserver_Scheme);
Add (Schemes, "mailto", Mailto_Scheme);
Add (Schemes, "maps", Maps_Scheme);
Add (Schemes, "market", Market_Scheme);
Add (Schemes, "message", Message_Scheme);
Add (Schemes, "mid", Mid_Scheme);
Add (Schemes, "mms", MMS_Scheme);
Add (Schemes, "modem", Modem_Scheme);
Add (Schemes, "mongodb", Mongodb_Scheme);
Add (Schemes, "moz", Moz_Scheme);
Add (Schemes, "ms-access", MS_Access_Scheme);
Add (Schemes, "ms-browser-extension", MS_Browser_Extension_Scheme);
Add (Schemes, "ms-drive-to", MS_Drive_To_Scheme);
Add (Schemes, "ms-enrollment", MS_Enrollment_Scheme);
Add (Schemes, "ms-excel", MS_Excel_Scheme);
Add (Schemes, "ms-gamebarservices", MS_Gamebarservices_Scheme);
Add (Schemes, "ms-getoffice", MS_Getoffice_Scheme);
Add (Schemes, "ms-help", MS_Help_Scheme);
Add (Schemes, "ms-infopath", MS_Infopath_Scheme);
Add (Schemes, "ms-inputapp", MS_Inputapp_Scheme);
Add (Schemes, "ms-media-stream-id", MS_Media_Stream_ID_Scheme);
Add (Schemes, "ms-officeapp", MS_Officeapp_Scheme);
Add (Schemes, "ms-people", MS_People_Scheme);
Add (Schemes, "ms-project", MS_Project_Scheme);
Add (Schemes, "ms-powerpoint", MS_Powerpoint_Scheme);
Add (Schemes, "ms-publisher", MS_Publisher_Scheme);
Add (Schemes, "ms-search-repair", MS_Search_Repair_Scheme);
Add (Schemes, "ms-secondary-screen-controller",
MS_Secondary_Screen_Controller_Scheme);
Add (Schemes, "ms-secondary-screen-setup",
MS_Secondary_Screen_Setup_Scheme);
Add (Schemes, "ms-settings", MS_Settings_Scheme);
Add (Schemes, "ms-settings-airplanemode",
MS_Settings_Airplanemode_Scheme);
Add (Schemes, "ms-settings-bluetooth", MS_Settings_Bluetooth_Scheme);
Add (Schemes, "ms-settings-camera", MS_Settings_Camera_Scheme);
Add (Schemes, "ms-settings-cellular", MS_Settings_Cellular_Scheme);
Add (Schemes, "ms-settings-cloudstorage",
MS_Settings_Cloudstorage_Scheme);
Add (Schemes, "ms-settings-connectabledevices",
MS_Settings_Connectabledevices_Scheme);
Add (Schemes, "ms-settings-displays-topology",
MS_Settings_Displays_Topology_Scheme);
Add (Schemes, "ms-settings-emailandaccounts",
MS_Settings_Emailandaccounts_Scheme);
Add (Schemes, "ms-settings-language",
MS_Settings_Language_Scheme);
Add (Schemes, "ms-settings-location",
MS_Settings_Location_Scheme);
Add (Schemes, "ms-settings-lock", MS_Settings_Lock_Scheme);
Add (Schemes, "ms-settings-nfctransactions",
MS_Settings_Nfctransactions_Scheme);
Add (Schemes, "ms-settings-notifications",
MS_Settings_Notifications_Scheme);
Add (Schemes, "ms-settings-power", MS_Settings_Power_Scheme);
Add (Schemes, "ms-settings-privacy", MS_Settings_Privacy_Scheme);
Add (Schemes, "ms-settings-proximity", MS_Settings_Proximity_Scheme);
Add (Schemes, "ms-settings-screenrotation",
MS_Settings_Screenrotation_Scheme);
Add (Schemes, "ms-settings-wifi", MS_Settings_WiFi_Scheme);
Add (Schemes, "ms-settings-workplace", MS_Settings_Workplace_Scheme);
Add (Schemes, "ms-spd", MS_SPD_Scheme);
Add (Schemes, "ms-sttoverlay", MS_Sttoverlay_Scheme);
Add (Schemes, "ms-transit-to", MS_Transit_To_Scheme);
Add (Schemes, "ms-virtualtouchpad", MS_Virtualtouchpad_Scheme);
Add (Schemes, "ms-visio", MS_Visio_Scheme);
Add (Schemes, "ms-walk-to", MS_Walk_To_Scheme);
Add (Schemes, "ms-whiteboard", MS_Whiteboard_Scheme);
Add (Schemes, "ms-whiteboard-cmd", MS_Whiteboard_CMD_Scheme);
Add (Schemes, "ms-word", MS_Word_Scheme);
Add (Schemes, "msnim", MSnim_Scheme);
Add (Schemes, "msrp", MSRP_Scheme);
Add (Schemes, "msrps", MSRPS_Scheme);
Add (Schemes, "mtqp", MTQP_Scheme);
Add (Schemes, "mumble", Mumble_Scheme);
Add (Schemes, "mupdate", Mupdate_Scheme);
Add (Schemes, "mvn", MVN_Scheme);
Add (Schemes, "news", News_Scheme);
Add (Schemes, "nfs", NFS_Scheme);
Add (Schemes, "ni", NI_Scheme);
Add (Schemes, "nih", NIH_Scheme);
Add (Schemes, "nntp", NNTP_Scheme);
Add (Schemes, "notes", Notes_Scheme);
Add (Schemes, "ocf", OCF_Scheme);
Add (Schemes, "oid", OID_Scheme);
Add (Schemes, "onenote", Onenote_Scheme);
Add (Schemes, "onenote-cmd", Onenote_CMD_Scheme);
Add (Schemes, "opaquelocktoken", Opaquelocktoken_Scheme);
Add (Schemes, "pack", Pack_Scheme);
Add (Schemes, "palm", Palm_Scheme);
Add (Schemes, "paparazzi", Paparazzi_Scheme);
Add (Schemes, "pkcs11", Pkcs11_Scheme);
Add (Schemes, "platform", Platform_Scheme);
Add (Schemes, "pop", POP_Scheme);
Add (Schemes, "pres", Pres_Scheme);
Add (Schemes, "prospero", Prospero_Scheme);
Add (Schemes, "proxy", Proxy_Scheme);
Add (Schemes, "pwid", Pwid_Scheme);
Add (Schemes, "psyc", Psyc_Scheme);
Add (Schemes, "qb", QB_Scheme);
Add (Schemes, "query", Query_Scheme);
Add (Schemes, "redis", Redis_Scheme);
Add (Schemes, "rediss", Rediss_Scheme);
Add (Schemes, "reload", Reload_Scheme);
Add (Schemes, "res", Res_Scheme);
Add (Schemes, "resource", Resource_Scheme);
Add (Schemes, "rmi", RMI_Scheme);
Add (Schemes, "rsync", Rsync_Scheme);
Add (Schemes, "rtmfp", RTMFP_Scheme);
Add (Schemes, "rtmp", RTMP_Scheme);
Add (Schemes, "rtsp", RTSP_Scheme);
Add (Schemes, "rtsps", RTSPS_Scheme);
Add (Schemes, "rtspu", RTSPU_Scheme);
Add (Schemes, "secondlife", Secondlife_Scheme);
Add (Schemes, "service", Service_Scheme);
Add (Schemes, "session", Session_Scheme);
Add (Schemes, "sftp", SFTP_Scheme);
Add (Schemes, "sgn", SGN_Scheme);
Add (Schemes, "shttp", SHTTP_Scheme);
Add (Schemes, "sieve", Sieve_Scheme);
Add (Schemes, "sip", Sip_Scheme);
Add (Schemes, "sips", Sips_Scheme);
Add (Schemes, "skype", Skype_Scheme);
Add (Schemes, "smb", SMB_Scheme);
Add (Schemes, "sms", SMS_Scheme);
Add (Schemes, "smtp", SMTP_Scheme);
Add (Schemes, "snews", SNews_Scheme);
Add (Schemes, "snmp", SNTP_Scheme);
Add (Schemes, "soap.beep", Soap_Beep_Scheme);
Add (Schemes, "soap.beeps", Soap_Beeps_Scheme);
Add (Schemes, "soldat", Soldat_Scheme);
Add (Schemes, "spotify", Spotify_Scheme);
Add (Schemes, "ssh", SSH_Scheme);
Add (Schemes, "steam", Steam_Scheme);
Add (Schemes, "stun", Stun_Scheme);
Add (Schemes, "stuns", Stuns_Scheme);
Add (Schemes, "submit", Submit_Scheme);
Add (Schemes, "svn", SVN_Scheme);
Add (Schemes, "tag", Tag_Scheme);
Add (Schemes, "teamspeak", Teamspeak_Scheme);
Add (Schemes, "tel", Tel_Scheme);
Add (Schemes, "teliaeid", Teliaeid_Scheme);
Add (Schemes, "telnet", Telnet_Scheme);
Add (Schemes, "tftp", TFTP_Scheme);
Add (Schemes, "things", Things_Scheme);
Add (Schemes, "thismessage", Thismessage_Scheme);
Add (Schemes, "tip", Tip_Scheme);
Add (Schemes, "tn3270", Tn3270_Scheme);
Add (Schemes, "tool", Tool_Scheme);
Add (Schemes, "turn", Turn_Scheme);
Add (Schemes, "turns", Turns_Scheme);
Add (Schemes, "tv", TV_Scheme);
Add (Schemes, "udp", UDP_Scheme);
Add (Schemes, "unreal", Unreal_Scheme);
Add (Schemes, "urn", URN_Scheme);
Add (Schemes, "ut2004", UT2004_Scheme);
Add (Schemes, "v-event", V_Event_Scheme);
Add (Schemes, "vemmi", VEMMI_Scheme);
Add (Schemes, "ventrilo", Ventrilo_Scheme);
Add (Schemes, "videotex", Videotex_Scheme);
Add (Schemes, "vnc", VNC_Scheme);
Add (Schemes, "view-source", View_Source_Scheme);
Add (Schemes, "wais", Wais_Scheme);
Add (Schemes, "webcal", Webcal_Scheme);
Add (Schemes, "wpid", Wpid_Scheme);
Add (Schemes, "ws", WS_Scheme);
Add (Schemes, "wss", WSS_Scheme);
Add (Schemes, "wtai", WTAI_Scheme);
Add (Schemes, "wyciwyg", Wyciwyg_Scheme);
Add (Schemes, "xcon", Xcon_Scheme);
Add (Schemes, "xcon-userid", Xcon_Userid_Scheme);
Add (Schemes, "xfire", Xfire_Scheme);
Add (Schemes, "xmlrpc.beep", XMLRPC_Beep_Scheme);
Add (Schemes, "xmlrpc.beeps", XMLRPC_Beeps_Scheme);
Add (Schemes, "xmpp", XMPP_Scheme);
Add (Schemes, "xri", XRI_Scheme);
Add (Schemes, "ymsgr", YMSGR_Scheme);
Add (Schemes, "z39.50", Z39_50_Scheme);
Add (Schemes, "z39.50r", Z39_50r_Scheme);
Add (Schemes, "z39.50s", Z39_50s_Scheme);
end GNAT.Sockets.Connection_State_Machine.HTTP_Server;
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