File : adagio-network_settings.adb
------------------------------------------------------------------------------
-- ADAGIO - ADALID - AENEA. --
-- --
-- Copyright (C) 2003 --
-- A. Mosteo. --
-- --
-- Authors: A. Mosteo. (adagio@mosteo.com) --
-- --
-- If you have any questions in regard to this software, please address --
-- them to the above email. --
-- --
-- This program 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 program 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. --
-- --
-- You are not allowed to use any part of this code to develop a program --
-- whose output would be used to harass or prosecute other users of the --
-- networks Adagio connects with. All data collected with Adagio or a tool --
-- containing Adagio code about other network users must remain --
-- confidential and cannot be made public by any mean, nor be used to --
-- harass or legally prosecute these users. --
------------------------------------------------------------------------------
-- $Id: adagio-network_settings.adb,v 1.3 2004/01/21 21:05:38 Jano Exp $
-- This package contains configuration settings about network topology.
with Adagio.Globals;
with Adagio.Globals.Options;
with Adagio.Misc;
with Adagio.Socket.IP;
with Adagio.Trace;
package body Adagio.Network_settings is
NATF_Address : Ustring := U ("127.0.0.1");
------------------------------------------------------------------------
-- Get_NATF_Address --
------------------------------------------------------------------------
-- Returns the public IP visible in the out world, which others can use to
-- be port forwarded to us. It is initially 127.0.0.1 (hence invalid!!)
-- until it is detected somehow and set with the Set_... function.
-- In our case, our IP is obtained from the handshake with any server.
function Get_NATF_Address return String is
begin
return S (NATF_Address);
end Get_NATF_Address;
------------------------------------------------------------------------
-- Set_NATF_Address --
------------------------------------------------------------------------
-- Should be in dotted format
procedure Set_NATF_Address (Address : in String) is
begin
NATF_Address := U (Address);
end Set_NATF_Address;
------------------------------------------------------------------------
-- Get_Reachable_IP --
------------------------------------------------------------------------
-- Get reachable IP, public, NATF or internal in this order of preference:
function Get_Reachable_IP return String is
begin
case Internet_Route is
when Direct =>
return Socket.IP.Get_IP (Public => true);
when NatForward =>
return Get_NATF_Address;
when others =>
return Socket.IP.Get_IP (Public => false);
end case;
end Get_Reachable_IP;
begin
-- Obtain the routing:
declare
Route : constant String := S (Globals.Options.Network_InternetRoute);
begin
Internet_route := Routings'Value (Route);
-- Ensure that things are right:
if Internet_route = Direct then
begin
declare
S : String := Socket.IP.Get_IP (Public => true);
begin
Trace.Log ("Network settings: Our public IP is " & S);
end;
exception
when others =>
-- No public IP found, downgrading to NAT:
Internet_route := Nat;
Trace.Log ("Network_settings: Direct connection was specified"
& " but no public IP found, switching to NAT.",
Trace.Warning);
end;
elsif Internet_route = Nat or else Internet_route = NatForward then
begin
declare
S : String := Socket.IP.Get_IP (Public => true);
begin
Internet_route := Direct;
Trace.Log ("Network_settings: NAT connection was specified " &
"but a public IP has been found, switching to direct.",
Trace.Warning);
end;
exception
when others =>
null; -- Right, there were no public IP
end;
end if;
Trace.Log ("Network_settings: Internet route = " &
Routings'Image (Internet_route));
end;
-- Obtain valid addresses:
declare
Addresses : constant String := Misc.To_lower (S (
Globals.Options.Network_ValidAddresses));
begin
Accept_public_addresses := Addresses = "all" or Addresses = "public";
Accept_private_addresses := Addresses = "all" or Addresses = "private";
Trace.Log ("Network_settings: Valid addresses = " & Addresses);
end;
end Adagio.Network_settings;