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/*
Derived from source code of TrueCrypt 7.1a, which is
Copyright (c) 2008-2012 TrueCrypt Developers Association and which is governed
by the TrueCrypt License 3.0.
Modifications and additions to the original source code (contained in this file)
and all other portions of this file are Copyright (c) 2013-2015 IDRIX
and are governed by the Apache License 2.0 the full text of which is
contained in the file License.txt included in VeraCrypt binary and source
code distribution packages.
*/
#include "System.h"
#include "Main/GraphicUserInterface.h"
#include "Volume/Hash.h"
#include "KeyfileGeneratorDialog.h"
namespace VeraCrypt
{
KeyfileGeneratorDialog::KeyfileGeneratorDialog (wxWindow* parent) : KeyfileGeneratorDialogBase (parent)
{
RandomNumberGenerator::Start();
Hashes = Hash::GetAvailableAlgorithms();
foreach (shared_ptr <Hash> hash, Hashes)
{
if (!hash->IsDeprecated())
HashChoice->Append (hash->GetName(), hash.get());
}
HashChoice->Select (0);
RandomNumberGenerator::SetHash (Gui->GetSelectedData <Hash> (HashChoice)->GetNew());
ShowBytes (RandomPoolStaticText, RandomNumberGenerator::PeekPool().GetRange (0, 24));
MouseStaticText->Wrap (Gui->GetCharWidth (MouseStaticText) * 70);
MainSizer->SetMinSize (wxSize (-1, Gui->GetCharHeight (this) * 24));
Layout();
Fit();
Center();
foreach (wxWindow *c, this->GetChildren())
c->Connect (wxEVT_MOTION, wxMouseEventHandler (KeyfileGeneratorDialog::OnMouseMotion), nullptr, this);
}
KeyfileGeneratorDialog::~KeyfileGeneratorDialog ()
{
}
void KeyfileGeneratorDialog::OnGenerateButtonClick (wxCommandEvent& event)
{
try
{
int keyfilesCount = NumberOfKeyfiles->GetValue();
int keyfilesSize = KeyfilesSize->GetValue();
bool useRandomSize = RandomSizeCheckBox->IsChecked();
wxString keyfileBaseName = KeyfilesBaseName->GetValue();
keyfileBaseName.Trim(true);
keyfileBaseName.Trim(false);
if (keyfileBaseName.IsEmpty())
{
Gui->ShowWarning("KEYFILE_EMPTY_BASE_NAME");
return;
}
wxFileName baseFileName = wxFileName::FileName (keyfileBaseName);
if (!baseFileName.IsOk())
{
Gui->ShowWarning("KEYFILE_INVALID_BASE_NAME");
return;
}
DirectoryPath keyfilesDir = Gui->SelectDirectory (Gui->GetActiveWindow(), LangString["SELECT_KEYFILE_GENERATION_DIRECTORY"], false);
if (keyfilesDir.IsEmpty())
return;
wxFileName dirFileName = wxFileName::DirName( wstring(keyfilesDir).c_str() );
if (!dirFileName.IsDirWritable ())
{
Gui->ShowWarning(L"You don't have write permission on the selected directory");
return;
}
wxBusyCursor busy;
for (int i = 0; i < keyfilesCount; i++)
{
int bufferLen;
if (useRandomSize)
{
SecureBuffer sizeBuffer (sizeof(int));
RandomNumberGenerator::GetData (sizeBuffer, true);
memcpy(&bufferLen, sizeBuffer.Ptr(), sizeof(int));
/* since keyfilesSize < 1024 * 1024, we mask with 0x000FFFFF */
bufferLen = (long) (((unsigned long) bufferLen) & 0x000FFFFF);
bufferLen %= ((1024*1024 - 64) + 1);
bufferLen += 64;
}
else
bufferLen = keyfilesSize;
SecureBuffer keyfileBuffer (bufferLen);
RandomNumberGenerator::GetData (keyfileBuffer, true);
wstringstream convertStream;
convertStream << i;
wxString suffix = L"_";
suffix += convertStream.str().c_str();
wxFileName keyfileName;
if (i == 0)
{
keyfileName.Assign(dirFileName.GetPath(), keyfileBaseName);
}
else
{
if (baseFileName.HasExt())
{
keyfileName.Assign(dirFileName.GetPath(), baseFileName.GetName() + suffix + L"." + baseFileName.GetExt());
}
else
{
keyfileName.Assign(dirFileName.GetPath(), keyfileBaseName + suffix);
}
}
if (keyfileName.Exists())
{
wxString msg = wxString::Format(LangString["KEYFILE_ALREADY_EXISTS"], keyfileName.GetFullPath());
if (!Gui->AskYesNo (msg, false, true))
return;
}
{
FilePath keyfilePath((const wchar_t*) keyfileName.GetFullPath().c_str());
File keyfile;
keyfile.Open (keyfilePath, File::CreateWrite);
keyfile.Write (keyfileBuffer);
}
}
Gui->ShowInfo ("KEYFILE_CREATED");
}
catch (exception &e)
{
Gui->ShowError (e);
}
}
void KeyfileGeneratorDialog::OnHashSelected (wxCommandEvent& event)
{
RandomNumberGenerator::SetHash (Gui->GetSelectedData <Hash> (HashChoice)->GetNew());
}
void KeyfileGeneratorDialog::OnMouseMotion (wxMouseEvent& event)
{
event.Skip();
RandomNumberGenerator::AddToPool (ConstBufferPtr (reinterpret_cast <byte *> (&event), sizeof (event)));
long coord = event.GetX();
RandomNumberGenerator::AddToPool (ConstBufferPtr (reinterpret_cast <byte *> (&coord), sizeof (coord)));
coord = event.GetY();
RandomNumberGenerator::AddToPool (ConstBufferPtr (reinterpret_cast <byte *> (&coord), sizeof (coord)));
if (ShowRandomPoolCheckBox->IsChecked())
ShowBytes (RandomPoolStaticText, RandomNumberGenerator::PeekPool().GetRange (0, 24));
}
void KeyfileGeneratorDialog::OnShowRandomPoolCheckBoxClicked (wxCommandEvent& event)
{
if (!event.IsChecked())
RandomPoolStaticText->SetLabel (L"");
}
void KeyfileGeneratorDialog::OnRandomSizeCheckBoxClicked (wxCommandEvent& event)
{
if (!event.IsChecked())
KeyfilesSize->Enable();
else
KeyfilesSize->Disable();
}
void KeyfileGeneratorDialog::ShowBytes (wxStaticText *textCtrl, const ConstBufferPtr &buffer, bool appendDots)
{
wxString str;
for (size_t i = 0; i < buffer.Size(); ++i)
{
str += wxString::Format (L"%02X", buffer[i]);
}
if (appendDots)
str += L"..";
textCtrl->SetLabel (str.c_str());
for (size_t i = 0; i < str.size(); ++i)
{
str[i] = L'X';
}
}
}
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