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298 | -- SPDX-License-Identifier: GPL-3.0-or-later
------------------------------------------------------------------------
-- pla-util - A power line adapter utility
-- Copyright (C) 2016-2023 John Serock
--
-- This file is part of pla-util.
--
-- pla-util 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 3 of the License, or
-- (at your option) any later version.
--
-- pla-util 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 program. If not, see <http://www.gnu.org/licenses/>.
------------------------------------------------------------------------
with Ada.Characters.Latin_1;
with GNAT.SHA256;
with Power_Line_Adapters.Network;
with To_Bounded_String;
package body Power_Line_Adapters is
function "<" (Left : Adapter_Type;
Right : Adapter_Type) return Boolean is
use type MAC_Addresses.MAC_Address_Type;
begin
if Left.Network_Interface = Right.Network_Interface then
return Left.MAC_Address < Right.MAC_Address;
else
return Left.Network_Interface < Right.Network_Interface;
end if;
end "<";
overriding function "=" (Left : Adapter_Type;
Right : Adapter_Type) return Boolean is
use type MAC_Addresses.MAC_Address_Type;
begin
return Left.Network_Interface = Right.Network_Interface and then Left.MAC_Address = Right.MAC_Address;
end "=";
function Generate_DAK (Passphrase : String) return Octets.Key_Type is
Salt : constant Ada.Streams.Stream_Element_Array (1 .. 8) := (16#08#, 16#85#, 16#6d#, 16#af#, 16#7c#, 16#f5#, 16#81#, 16#85#);
begin
return Generate_Key (Passphrase => Passphrase,
Salt => Salt);
end Generate_DAK;
function Generate_Key (Passphrase : String;
Salt : Ada.Streams.Stream_Element_Array) return Octets.Key_Type is
use type Ada.Streams.Stream_Element_Offset;
Key : Octets.Key_Type;
J : Ada.Streams.Stream_Element_Offset;
Digest : GNAT.SHA256.Binary_Message_Digest;
PS : Ada.Streams.Stream_Element_Array (1 .. Passphrase'Length + Salt'Length);
begin
J := 1;
for I in Passphrase'Range loop
PS (J) := Ada.Streams.Stream_Element (Character'Pos (Passphrase (I)));
J := J + 1;
end loop;
for I in Salt'Range loop
PS (J) := Salt (I);
J := J + 1;
end loop;
Digest := GNAT.SHA256.Digest (A => PS);
for I in 2 .. 1000 loop
Digest := GNAT.SHA256.Digest (A => Digest);
end loop;
J := 1;
for I in Octets.Key_Type'Range loop
Key (I) := Octets.Octet_Type (Digest (J));
J := J + 1;
end loop;
return Key;
end Generate_Key;
function Generate_NMK (Passphrase : String) return Octets.Key_Type is
Salt : constant Ada.Streams.Stream_Element_Array (1 .. 8) := (16#08#, 16#85#, 16#6d#, 16#af#, 16#7c#, 16#f5#, 16#81#, 16#86#);
begin
return Generate_Key (Passphrase => Passphrase,
Salt => Salt);
end Generate_NMK;
function Has_MAC_Address (Self : Adapter_Type;
MAC_Address : MAC_Addresses.MAC_Address_Type) return Boolean is
use type MAC_Addresses.MAC_Address_Type;
begin
return Self.MAC_Address = MAC_Address;
end Has_MAC_Address;
function Image (Self : Adapter_Type) return String is
begin
return Self.MAC_Address.Image & " via " & Self.Network_Interface'Image & " interface, HFID: " & HFID_Strings.To_String (Source => Self.HFID);
end Image;
procedure Initialize (Self : out Adapter_Type;
Network_Interface : Network_Interface_Type;
MAC_Address : MAC_Addresses.MAC_Address_Type;
HFID : HFID_Strings.Bounded_String) is
begin
Self.Network_Interface := Network_Interface;
Self.MAC_Address := MAC_Address;
Self.HFID := HFID;
end Initialize;
procedure Process (Self : Adapter_Type;
Request : Messages.Message_Type;
Confirmation : out Packets.Payload_Type;
Confirmation_Length : out Natural;
From_MAC_Address : out MAC_Addresses.MAC_Address_Type) is
begin
Power_Line_Adapters.Network.Send (Message => Request,
Destination => Self.MAC_Address);
Power_Line_Adapters.Network.Receive (Confirmation => Confirmation,
Confirmation_Length => Confirmation_Length,
From_MAC_Address => From_MAC_Address);
if Confirmation_Length = 0 then
raise Adapter_Error with Message_No_Confirmation;
end if;
end Process;
function To_HFID_String (HFID_Octets : Octets.Octets_Type) return HFID_Strings.Bounded_String is
function To_String is new To_Bounded_String (T => HFID_Strings.Bounded_String,
Append => HFID_Strings.Append);
begin
return To_String (Data => HFID_Octets);
end To_HFID_String;
procedure Validate_DAK_Passphrase (Passphrase : String;
Check_Min_Length : Boolean := True) is
Max_Passphrase_Length : constant := 19;
Min_Passphrase_Length : constant := 19;
begin
Validate_Passphrase (Passphrase => Passphrase,
Min_Passphrase_Length => Min_Passphrase_Length,
Max_Passphrase_Length => Max_Passphrase_Length,
Check_Min_Length => Check_Min_Length);
end Validate_DAK_Passphrase;
procedure Validate_HFID (HFID : HFID_Strings.Bounded_String;
Min_HFID_Length : Positive := 1) is
Length : constant HFID_Strings.Length_Range := HFID_Strings.Length (HFID);
C : Character;
begin
if Length < Min_HFID_Length then
raise Adapter_Error with "HFID has fewer than" & Integer'Image (Min_HFID_Length) & " characters";
end if;
for I in 1 .. Length loop
C := HFID_Strings.Element (Source => HFID,
Index => I);
if C < ' ' or else C > Ada.Characters.Latin_1.DEL then
raise Adapter_Error with "HFID contains one or more illegal characters";
end if;
end loop;
end Validate_HFID;
procedure Validate_NMK_Passphrase (Passphrase : String;
Check_Min_Length : Boolean := True) is
Max_Passphrase_Length : constant := 64;
Min_Passphrase_Length : constant := 24;
begin
Validate_Passphrase (Passphrase => Passphrase,
Min_Passphrase_Length => Min_Passphrase_Length,
Max_Passphrase_Length => Max_Passphrase_Length,
Check_Min_Length => Check_Min_Length);
end Validate_NMK_Passphrase;
procedure Validate_Passphrase (Passphrase : String;
Min_Passphrase_Length : Positive;
Max_Passphrase_Length : Positive;
Check_Min_Length : Boolean := True) is
begin
if Passphrase'Length > Max_Passphrase_Length then
raise Adapter_Error with "Passphrase has more than" & Integer'Image (Max_Passphrase_Length) & " characters";
end if;
if Check_Min_Length and then Passphrase'Length < Min_Passphrase_Length then
raise Adapter_Error with "Passphrase has fewer than" & Integer'Image (Min_Passphrase_Length) & " characters";
end if;
for I in Passphrase'Range loop
if Passphrase (I) < ' ' or else Passphrase (I) > Ada.Characters.Latin_1.DEL then
raise Adapter_Error with "Passphrase contains one or more illegal characters";
end if;
end loop;
end Validate_Passphrase;
function Check_DAK (Self : Adapter_Type;
Passphrase : String) return Boolean is separate;
function Check_NMK (Self : Adapter_Type;
Passphrase : String) return Boolean is separate;
function Get_Any_Network_Info (Self : Adapter_Type) return Network_Info_List_Type is separate;
function Get_Capabilities (Self : Adapter_Type) return Capabilities_Type is separate;
function Get_Discover_List (Self : Adapter_Type) return Discover_List_Type is separate;
function Get_HFID (Self : Adapter_Type;
Kind : HFID_Kind_Type) return HFID_Strings.Bounded_String is separate;
function Get_Id_Info (Self : Adapter_Type) return Id_Info_Type is separate;
function Get_Manufacturer_HFID (Self : Adapter_Type) return HFID_Strings.Bounded_String is separate;
function Get_Member_Network_Info (Self : Adapter_Type) return Network_Info_List_Type is separate;
function Get_Network_Info (Self : Adapter_Type;
Scope : Network_Scope_Type) return Network_Info_List_Type is separate;
function Get_Network_Stats (Self : Adapter_Type) return Network_Stats_List_Type is separate;
function Get_Station_Info (Self : Adapter_Type) return Station_Info_Type is separate;
function Get_User_HFID (Self : Adapter_Type) return HFID_Strings.Bounded_String is separate;
procedure Reset (Self : Adapter_Type) is separate;
procedure Restart (Self : Adapter_Type) is separate;
procedure Set_HFID (Self : Adapter_Type;
HFID : HFID_Strings.Bounded_String) is separate;
procedure Set_NMK (Self : Adapter_Type;
Passphrase : String) is separate;
end Power_Line_Adapters;
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