File : adagio-socket-ip.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-socket-ip.adb,v 1.3 2004/01/21 21:05:39 Jano Exp $
with Gnat.Sockets; use Gnat;
with Ada.Exceptions; use Ada;
package body Adagio.Socket.IP is
-- Returns the public/private IP of this machine
-- If more than one public, the first encountered
-- If none private, 127.0.0.1
function Get_IP(Public: Boolean:= true) return string is
Host: Sockets.Host_entry_type:=
Sockets.Get_host_by_name(Sockets.Host_name);
begin
if Public then
for n in 1 .. Sockets.Addresses_length(Host) loop
if Kind(Sockets.Image(Sockets.Addresses(Host, n))) =
Adagio.Socket.IP.Public then
return Sockets.Image(Sockets.Addresses(Host, n));
end if;
end loop;
Exceptions.Raise_Exception(Constraint_error'Identity, "No public IP found");
return "0.0.0.0"; -- To disable warning
else
for n in 1 .. Sockets.Addresses_length(Host) loop
if Kind(Sockets.Image(Sockets.Addresses(Host, n))) = Internal then
return Sockets.Image(Sockets.Addresses(Host, n));
end if;
end loop;
return "127.0.0.1";
end if;
end;
-- Specific form:
function Get_IP(Kind : in Address_type) return string is
begin
case Kind is
when Local => return Local_address;
when Public => return Get_IP (Public => true);
when Internal =>
if Get_IP (Public => false) /= Local_address then
return Get_IP (Public => false);
else
Exceptions.Raise_Exception(
Constraint_error'Identity, "No private IP found");
return Local_address; -- Prevent warning
end if;
end case;
end Get_IP;
-- Says if a dotted address is public or not:
function Kind(Address: String) return Address_type is
begin
if Address(Address'First .. Address'First + 2) = "10." then
return Internal;
elsif Address(Address'First .. Address'First + 6) = "192.168" then
return Internal;
elsif Address(Address'First .. Address'First + 2) = "172" then
declare
Num : Natural := Natural'Value (Address (Address'First + 4 .. Address'First + 6));
begin
if Num >= 16 and then Num <= 31 then
return Internal;
else
return Public;
end if;
end;
elsif Address(Address'First .. Address'First + 2) = "127" and then
Address (Address'First .. Address'First + 8) = "127.0.0.1" then
return Local;
elsif Address(Address'First .. Address'First + 2) = "127" then
return Internal;
end if;
return Public;
end Kind;
-- Says if is public:
function Is_public (Address : in String) return Boolean is
begin
return Kind (Address) = Public;
end Is_Public;
end Adagio.Socket.IP;