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286 | ------------------------------------------------------------------------------
-- --
-- AXMPP Project --
-- --
-- XMPP Library for Ada --
-- --
------------------------------------------------------------------------------
-- --
-- Copyright © 2011, Alexander Basov <coopht@gmail.com> --
-- All rights reserved. --
-- --
-- Redistribution and use in source and binary forms, with or without --
-- modification, are permitted provided that the following conditions --
-- are met: --
-- --
-- * Redistributions of source code must retain the above copyright --
-- notice, this list of conditions and the following disclaimer. --
-- --
-- * Redistributions in binary form must reproduce the above copyright --
-- notice, this list of conditions and the following disclaimer in the --
-- documentation and/or other materials provided with the distribution. --
-- --
-- * Neither the name of the Alexander Basov, IE nor the names of its --
-- contributors may be used to endorse or promote products derived from --
-- this software without specific prior written permission. --
-- --
-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS --
-- "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT --
-- LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR --
-- A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT --
-- HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, --
-- SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED --
-- TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR --
-- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF --
-- LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING --
-- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS --
-- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. --
-- --
------------------------------------------------------------------------------
-- $Revision$ $Date$
------------------------------------------------------------------------------
with Ada.Characters.Conversions;
with Ada.Exceptions;
with XMPP.Logger;
package body XMPP.Networks is
use XMPP.Logger;
function "+" (Item : String) return Wide_Wide_String
renames Ada.Characters.Conversions.To_Wide_Wide_String;
---------------
-- Connect --
---------------
procedure Connect
(Self : not null access Network'Class;
Host : String;
Port : Natural) is
No_Block : GNAT.Sockets.Request_Type (GNAT.Sockets.Non_Blocking_IO);
begin
Create_Socket (Self.Sock);
Self.Addr :=
Sock_Addr_Type'(Addr =>
Addresses (GNAT.Sockets.Get_Host_By_Name (Host), 1),
Port => Port_Type (Port),
Family => Family_Inet);
Set_Socket_Option (Self.Sock,
Socket_Level,
(Reuse_Address, True));
Connect_Socket (Self.Sock, Self.Addr);
Self.Channel := Stream (Self.Sock);
delay 0.2;
No_Block.Enabled := True;
-- Setting non-blocking IO
GNAT.Sockets.Control_Socket (Self.Get_Socket, No_Block);
Create_Selector (Self.Selector);
Empty (Self.RSet);
Empty (Self.WSet);
Self.Target.On_Connect;
Self.Plain_Input.Set_Socket (Self.Sock);
exception
when E : others =>
Log (+Ada.Exceptions.Exception_Information (E));
end Connect;
------------------
-- Get_Socket --
------------------
function Get_Socket (Self : not null access Network'Class)
return Socket_Type is
begin
return Self.Sock;
end Get_Socket;
----------------
-- Get_Source --
----------------
function Get_Source (Self : not null access Network)
return not null access XML.SAX.Input_Sources.SAX_Input_Source'Class is
begin
if Self.Use_TSL then
return Self.TLS_Input'Access;
else
return Self.Plain_Input'Access;
end if;
end Get_Source;
----------------
-- Initialize --
----------------
procedure Initialize is
begin
-- Initializing gnutls
GNUTLS.Global_Set_Log_Level (65537);
GNUTLS.Global_Init;
end Initialize;
------------------------
-- Is_TLS_Established --
------------------------
function Is_TLS_Established (Self : Network) return Boolean is
begin
return Self.Use_TSL;
end Is_TLS_Established;
-------------------------
-- Read_Data_Wrapper --
-------------------------
function Read_Data_Wrapper (Self : not null access Network'Class)
return Boolean is
-- for debug
X : GNAT.Sockets.Request_Type (GNAT.Sockets.N_Bytes_To_Read);
begin
delay (0.1);
-- Getting how much data available in Socket
GNAT.Sockets.Control_Socket (Self.Get_Socket, X);
if X.Size = 0 then
return False;
else
return Self.Target.Read_Data;
end if;
end Read_Data_Wrapper;
---------------
-- Recieve --
---------------
function Recieve (Self : not null access Network'Class) return Boolean is
begin
Set (Self.RSet, Self.Sock);
Log ("Waiting for data in select");
-- multiplexed i/o, like select in C
Check_Selector (Self.Selector, Self.RSet, Self.WSet, Self.Status);
case Self.Status is
when Completed =>
if Is_Set (Self.RSet, Self.Sock) then
return Self.Read_Data_Wrapper;
else
return False;
end if;
when Expired =>
return True;
when Aborted =>
return False;
end case;
-- Set (Self.RSet, Self.Sock);
-- Empty (Self.RSet);
exception
when E : others =>
Log (+Ada.Exceptions.Exception_Information (E));
return False;
end Recieve;
------------
-- Send --
------------
procedure Send
(Self : not null access Network'Class;
Data : Ada.Streams.Stream_Element_Array) is
begin
if not Self.Use_TSL then
Self.Channel.Write (Data);
else
Log ("Sendinging data via TLS");
declare
Tmp : Ada.Streams.Stream_Element_Array := Data;
E : constant GNAT.Sockets.Vector_Element :=
(Base => Tmp (Tmp'First)'Unchecked_Access,
Length => Tmp'Length);
P : GNAT.Sockets.Vector_Type (0 .. 0);
L : Ada.Streams.Stream_Element_Count := 1;
begin
P (0) := E;
GNUTLS.Record_Send (Self.TLS_Session, P, L);
end;
end if;
exception
when E : others =>
Log (+Ada.Exceptions.Exception_Information (E));
end Send;
---------------------
-- Start_Handshake --
---------------------
procedure Start_Handshake (Self : in out Network) is
begin
Log ("GNUTLS.Anon_Allocate_Client_Credentials");
GNUTLS.Certificate_Allocate_Credentials (Self.Credential);
-- GNUTLS.Anon_Allocate_Client_Credentials (Self.Cred);
-- Initialize TLS session
Log ("Init");
GNUTLS.Init (Self.TLS_Session, GNUTLS.GNUTLS_CLIENT);
-- GNUTLS.Compression_Set_Priority (Self.TLS_Session, Comp_Priority);
-- GNUTLS.Mac_Set_Priority (Self.TLS_Session, Mac_Priority);
GNUTLS.Credentials_Set (Self.TLS_Session,
GNUTLS.GNUTLS_CRD_CERTIFICATE,
Self.Credential);
GNUTLS.Set_Default_Priority (Self.TLS_Session);
-- GNUTLS.Credentials_Set (Self.TLS_Session,
-- GNUTLS.GNUTLS_CRD_ANON,
-- Self.Cred);
Log ("GNUTLS.Transport_Set_Ptr");
GNUTLS.Transport_Set_Ptr (Self.TLS_Session, Self.Get_Socket);
Log ("GNUTLS.Handshake");
-- begin
-- GNUTLS.Handshake (Self.TLS_Session);
--
-- exception
-- when others =>
-- Log (GNUTLS.IO_Direction'Image
-- (GNUTLS.Get_Direction (Self.TLS_Session)));
-- end;
-- Log ("End of GNUTLS.Handshake");
--
Self.TLS_Input.Start_Handshake (Self.Sock, Self.TLS_Session);
Self.Use_TSL := True;
end Start_Handshake;
--------------------
-- Task_Stopped --
--------------------
procedure Task_Stopped (Self : not null access Network'Class) is
begin
Close_Selector (Self.Selector);
Close_Socket (Self.Sock);
Self.Target.On_Disconnect;
end Task_Stopped;
end XMPP.Networks;
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