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260 | -----------------------------------------------------------------------
-- keystore-verifier -- Toolbox to explore raw content of keystore
-- Copyright (C) 2019 Stephane Carrez
-- Written by Stephane Carrez (Stephane.Carrez@gmail.com)
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
-- http://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
-----------------------------------------------------------------------
with Interfaces.C.Strings;
with Ada.IO_Exceptions;
with Ada.Text_IO;
with Util.Strings;
with Util.Systems.Os;
with Util.Systems.Types;
with Util.Systems.Constants;
with Util.Streams.Raw;
with Util.Log.Loggers;
with Util.Encoders;
with Keystore.Buffers;
with Keystore.Marshallers;
with Keystore.IO.Headers;
with Keystore.Passwords.GPG;
package body Keystore.Verifier is
use type Interfaces.Unsigned_16;
use type Interfaces.Unsigned_32;
use type Interfaces.C.int;
use type Ada.Text_IO.Count;
use Ada.Streams;
use Util.Systems.Constants;
use Util.Systems.Types;
use type Keystore.Buffers.Block_Count;
use type Keystore.IO.Storage_Identifier;
function Sys_Error return String;
function Get_Storage_Id (Path : in String) return IO.Storage_Identifier;
procedure Open (Path : in String;
File : in out Util.Streams.Raw.Raw_Stream;
Sign : in Secret_Key;
Header : in out Keystore.IO.Headers.Wallet_Header;
Is_Keystore : out Boolean);
Log : constant Util.Log.Loggers.Logger := Util.Log.Loggers.Create ("Keystore.Verifier");
function Sys_Error return String is
Msg : constant Interfaces.C.Strings.chars_ptr
:= Util.Systems.Os.Strerror (Util.Systems.Os.Errno);
begin
return Interfaces.C.Strings.Value (Msg);
end Sys_Error;
function Get_Storage_Id (Path : in String) return IO.Storage_Identifier is
Pos : Natural;
begin
if Util.Strings.Ends_With (Path, ".dkt") then
Pos := Util.Strings.Rindex (Path, '-');
if Pos = 0 then
return IO.DEFAULT_STORAGE_ID;
end if;
return IO.Storage_Identifier'Value (Path (Pos + 1 .. Path'Last - 4));
else
return IO.DEFAULT_STORAGE_ID;
end if;
exception
when Constraint_Error =>
return IO.DEFAULT_STORAGE_ID;
end Get_Storage_Id;
procedure Open (Path : in String;
File : in out Util.Streams.Raw.Raw_Stream;
Sign : in Secret_Key;
Header : in out Keystore.IO.Headers.Wallet_Header;
Is_Keystore : out Boolean) is
-- Compilation on Windows requires this type visibility but GNAT 2019 complains.
pragma Warnings (Off);
use type Util.Systems.Types.File_Type;
pragma Warnings (On);
Storage_Id : constant IO.Storage_Identifier := Get_Storage_Id (Path);
Fd : Util.Systems.Types.File_Type := Util.Systems.Os.NO_FILE;
P : Interfaces.C.Strings.chars_ptr;
Flags : Interfaces.C.int;
Stat : aliased Util.Systems.Types.Stat_Type;
Result : Integer;
begin
Flags := O_CLOEXEC + O_RDONLY;
P := Interfaces.C.Strings.New_String (Path);
Fd := Util.Systems.Os.Sys_Open (P, Flags, 8#600#);
Interfaces.C.Strings.Free (P);
if Fd = Util.Systems.Os.NO_FILE then
Log.Error ("Cannot open keystore '{0}': {1}", Path, Sys_Error);
raise Ada.IO_Exceptions.Name_Error with Path;
end if;
Result := Util.Systems.Os.Sys_Fstat (Fd, Stat'Access);
if Result /= 0 then
Result := Util.Systems.Os.Sys_Close (Fd);
Log.Error ("Invalid keystore file '{0}': {1}", Path, Sys_Error);
raise Ada.IO_Exceptions.Name_Error with Path;
end if;
Ada.Text_IO.Put ("Path");
Ada.Text_IO.Set_Col (30);
Ada.Text_IO.Put_Line (Path);
Ada.Text_IO.Put ("File size");
Ada.Text_IO.Set_Col (30 - 1);
Ada.Text_IO.Put_Line (off_t'Image (Stat.st_size));
if Stat.st_size mod IO.Block_Size /= 0 then
Result := Util.Systems.Os.Sys_Close (Fd);
Log.Error ("Invalid or truncated keystore file '{0}': size is incorrect", Path);
raise Ada.IO_Exceptions.Name_Error with Path;
end if;
File.Initialize (Fd);
Header.Buffer := Buffers.Allocate ((Storage_Id, IO.HEADER_BLOCK_NUM));
declare
Buf : constant Buffers.Buffer_Accessor := Header.Buffer.Data.Value;
Last : Ada.Streams.Stream_Element_Offset;
Data : Keystore.IO.IO_Block_Type;
begin
File.Read (Data, Last);
if Last /= Data'Last then
Log.Warn ("Header block is too short");
raise Invalid_Keystore;
end if;
Buf.Data := Data (Buf.Data'Range);
Keystore.IO.Headers.Sign_Header (Header, Sign);
if Header.HMAC /= Data (Keystore.IO.BT_HMAC_HEADER_POS .. Data'Last) then
Log.Warn ("Header block HMAC signature is invalid");
-- raise Invalid_Block;
end if;
Keystore.IO.Headers.Read_Header (Header);
Is_Keystore := Storage_Id = IO.DEFAULT_STORAGE_ID;
Ada.Text_IO.Put ("Type");
Ada.Text_IO.Set_Col (30);
if not Is_Keystore then
Ada.Text_IO.Put ("storage");
Ada.Text_IO.Put_Line (IO.Storage_Identifier'Image (Storage_Id));
else
Ada.Text_IO.Put_Line ("keystore");
end if;
end;
end Open;
procedure Print_Information (Path : in String;
Is_Keystore : out Boolean) is
Header : Keystore.IO.Headers.Wallet_Header;
File : Util.Streams.Raw.Raw_Stream;
Sign : Secret_Key (Length => 32);
Data : Ada.Streams.Stream_Element_Array (1 .. 1024);
Last : Ada.Streams.Stream_Element_Offset;
Kind : Header_Slot_Type;
Encode : constant Util.Encoders.Encoder := Util.Encoders.Create ("hex");
begin
Open (Path => Path,
File => File,
Sign => Sign,
Header => Header,
Is_Keystore => Is_Keystore);
Ada.Text_IO.Put ("UUID");
Ada.Text_IO.Set_Col (30);
Ada.Text_IO.Put_Line (To_String (Header.UUID));
Ada.Text_IO.Put ("HMAC");
Ada.Text_IO.Set_Col (30);
Ada.Text_IO.Put_Line (Encode.Encode_Binary (Header.HMAC));
Ada.Text_IO.Put ("Header data");
Ada.Text_IO.Set_Col (29);
Ada.Text_IO.Put_Line (Header_Slot_Count_Type'Image (Header.Data_Count));
for I in 1 .. Header.Data_Count loop
IO.Headers.Get_Header_Data (Header, I, Kind, Data, Last);
Ada.Text_IO.Put (Header_Slot_Count_Type'Image (I));
Ada.Text_IO.Put (" Kind");
Ada.Text_IO.Set_Col (29);
Ada.Text_IO.Put (Header_Slot_Type'Image (Kind));
Ada.Text_IO.Set_Col (39);
Ada.Text_IO.Put (Stream_Element_Offset'Image (Last));
Ada.Text_IO.Put (" bytes ");
Ada.Text_IO.Put_Line (Keystore.Passwords.GPG.Extract_Key_Id (Data));
end loop;
declare
procedure Report;
Buf : constant Buffers.Buffer_Accessor := Header.Buffer.Data.Value;
Last : Ada.Streams.Stream_Element_Offset;
Data : Keystore.IO.IO_Block_Type;
Block : IO.Block_Number := 1;
Buffer : Keystore.Marshallers.Marshaller;
Btype : Interfaces.Unsigned_16;
Esize : Interfaces.Unsigned_16 with Unreferenced;
Id : Interfaces.Unsigned_32;
Current_Id : Interfaces.Unsigned_32 := 0;
Current_Type : Interfaces.Unsigned_16 := 0;
First_Block : IO.Block_Number := 1;
procedure Report is
begin
Ada.Text_IO.Put (IO.Block_Number'Image (First_Block));
if First_Block + 1 < Block then
Ada.Text_IO.Put ("..");
Ada.Text_IO.Put (IO.Block_Number'Image (Block - 1));
end if;
Ada.Text_IO.Put (" Wallet");
Ada.Text_IO.Put (Interfaces.Unsigned_32'Image (Current_Id));
if Current_Type = IO.BT_WALLET_DIRECTORY then
Ada.Text_IO.Put (" Directory");
elsif Current_Type = IO.BT_WALLET_HEADER then
Ada.Text_IO.Put (" Header");
elsif Current_Type = IO.BT_WALLET_DATA then
Ada.Text_IO.Put (" Data");
else
Ada.Text_IO.Put (" Unkown");
end if;
Ada.Text_IO.New_Line;
end Report;
begin
loop
File.Read (Data, Last);
exit when Last /= Data'Last;
Buffer.Buffer := Header.Buffer;
Buf.Data := Data (Buf.Data'Range);
Btype := Marshallers.Get_Header_16 (Buffer);
Esize := Marshallers.Get_Unsigned_16 (Buffer);
Id := Marshallers.Get_Unsigned_32 (Buffer);
if Btype /= Current_Type or Id /= Current_Id then
if Current_Id > 0 then
Report;
end if;
Current_Id := Id;
Current_Type := Btype;
First_Block := Block;
end if;
Block := Block + 1;
end loop;
Report;
end;
end Print_Information;
end Keystore.Verifier;
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