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#include "totpgen.h"
#ifdef _WIN32
static const std::string path_separator = "\\";
static const std::string config_dir_name = "TOTPGen";
#else
static const std::string path_separator = "/";
static const std::string config_dir_name = ".totpgen";
#endif
IMPLEMENT_APP(TOTPGenGUI)
bool TOTPGenGUI::OnInit()
{
TOTPGen *MainAppFrame = new TOTPGen();
MainAppFrame->Show(true);
return true;
}
TOTPGen::TOTPGen() : wxFrame(nullptr, wxID_ANY, wxT("TOTP Generator"),
wxDefaultPosition, wxSize(320,240),
wxDEFAULT_FRAME_STYLE | wxRESIZE_BORDER)
{
MainWindow = new wxPanel(this, wxID_ANY);
MainSizer = new wxBoxSizer(wxVERTICAL);
Locked = true;
wxString UserConfigDir = wxStandardPaths::Get().GetUserConfigDir();
wxString AppConfigDir = UserConfigDir + path_separator + config_dir_name;
if (!wxDirExists(AppConfigDir)) {
wxMkdir(AppConfigDir);
}
SecretFile = AppConfigDir + path_separator + "secret.dat";
TOTPField = new wxStaticText(MainWindow, wxID_ANY,
wxEmptyString, wxDefaultPosition,
wxDefaultSize, wxTE_CENTER);
wxFont LabelFont(48, wxFONTFAMILY_TELETYPE,
wxFONTSTYLE_NORMAL,
wxFONTWEIGHT_NORMAL);
TOTPField->SetFont(LabelFont);
TOTPField->SetLabel(" ");
TextSizer = new wxBoxSizer(wxHORIZONTAL);
TextSizer->Add(TOTPField, 2, wxCENTER);
CountdownGauge = new wxGauge(MainWindow, wxID_ANY, 30, wxPoint(50, 50));
CountdownTimer = new wxTimer(MainWindow, wxID_ANY);
CountdownTimer->Start(1000);
UpdateSecretButton = new wxButton(MainWindow, wxID_OK, wxT("Set Key"));
UpdateSecretButton->Bind(wxEVT_BUTTON, &TOTPGen::UpdateSecret, this);
UnlockButton = new wxButton(MainWindow, wxID_CLEAR, wxT("Unlock"));
UnlockButton->Bind(wxEVT_BUTTON, &TOTPGen::Unlock, this);
if (!wxFileExists(SecretFile)) {
UnlockButton->Enable(false);
}
ButtonSizer_Upper = new wxBoxSizer(wxHORIZONTAL);
ButtonSizer_Upper->Add(UpdateSecretButton, 2, wxEXPAND | wxALL);
ButtonSizer_Upper->Add(UnlockButton, 2, wxEXPAND | wxALL);
CopyButton = new wxButton(MainWindow, wxID_COPY, wxT("Copy"));
CopyButton->Bind(wxEVT_BUTTON, &TOTPGen::CopyText, this);
if (Locked) {
CopyButton->Enable(false);
}
QuitButton = new wxButton(MainWindow, wxID_EXIT, wxT("Exit"));
QuitButton->Bind(wxEVT_BUTTON, &TOTPGen::OnExit, this);
ButtonSizer_Lower = new wxBoxSizer(wxHORIZONTAL);
ButtonSizer_Lower->Add(CopyButton, 2, wxEXPAND | wxALL);
ButtonSizer_Lower->Add(QuitButton, 2, wxEXPAND | wxALL);
MainSizer->Add(TextSizer, 2, wxCENTER | wxALIGN_CENTER);
MainSizer->Add(CountdownGauge, 2, wxEXPAND | wxALL);
MainSizer->Add(ButtonSizer_Upper, 2, wxEXPAND | wxALL);
MainSizer->Add(ButtonSizer_Lower, 2, wxEXPAND | wxALL);
MainWindow->SetSizer(MainSizer);
}
void TOTPGen::OnExit(wxCommandEvent& WXUNUSED(event))
{
Close(true);
}
bool TOTPGen::IsBase32(std::string& str)
{
std::unordered_set<char> Base32Chars(base32.begin(), base32.end());
for (char c: str) {
if (Base32Chars.find(c) == Base32Chars.end()) {
return false;
}
}
return true;
}
void TOTPGen::UpdateSecret(wxCommandEvent& WXUNUSED(event))
{
wxTextEntryDialog SecretPrompt(this, wxT("Please enter the base 32 token."),
wxT("Secret Entry"), wxEmptyString);
std::string Secret_New;
if (SecretPrompt.ShowModal() == wxID_OK) {
Secret_New = SecretPrompt.GetValue().MakeUpper().ToStdString();
if (!IsBase32(Secret_New)) {
wxMessageBox(wxT("Base 32 token contains invalid characters.\n"
"Only the following are permissible: \n" + base32),
wxT("Error"), wxOK | wxICON_ERROR);
return;
}
}
wxPasswordEntryDialog PasswordPrompt(this, wxT("Please enter a new passphrase\n"
"to encrypt the secret token."),
wxT("Passphrase Entry"), wxEmptyString);
wxPasswordEntryDialog ConfirmPrompt(this, wxT("Please confirm the passphrase."),
wxT("Passphrase Entry"), wxEmptyString);
if ((PasswordPrompt.ShowModal() == wxID_OK)
&& (ConfirmPrompt.ShowModal() == wxID_OK)) {
if (PasswordPrompt.GetValue() == ConfirmPrompt.GetValue()) {
Passphrase = PasswordPrompt.GetValue();
}
else {
wxMessageBox(wxT("Passphrases did not match - try again"),
wxT("Error"), wxOK | wxICON_ERROR);
return;
}
}
else {
return;
}
if (!GenTOTP(Secret_New)) {
wxMessageBox(wxT("Could not generate TOTP - bad token?"),
wxT("Error"), wxOK | wxICON_ERROR);
return;
}
Secret = Secret_New;
EncryptSecret(Secret);
if (Locked) {
Locked = false;
MainWindow->Connect(CountdownTimer->GetId(), wxEVT_TIMER,
wxTimerEventHandler(TOTPGen::UpdateStatus),
NULL, this);
CopyButton->Enable(true);
UnlockButton->Enable(false);
}
return;
}
void TOTPGen::Unlock(wxCommandEvent& WXUNUSED(event))
{
wxPasswordEntryDialog PasswordPrompt(this, wxT("Please enter your passphrase."),
wxT("Passphrase Entry"), wxEmptyString);
if (PasswordPrompt.ShowModal() == wxID_OK) {
Passphrase = PasswordPrompt.GetValue();
}
if (!DecryptSecret()) {
wxMessageBox(wxT("Could not unlock base 32 token,\n"
"bad passphrase or corrupt file?"),
wxT("Error"), wxOK | wxICON_ERROR);
return;
}
MainWindow->Connect(CountdownTimer->GetId(), wxEVT_TIMER,
wxTimerEventHandler(TOTPGen::UpdateStatus),
NULL, this);
Locked = false;
CopyButton->Enable(true);
UnlockButton->Enable(false);
GenTOTP(Secret);
}
void TOTPGen::UpdateStatus(wxTimerEvent& WXUNUSED(event))
{
unsigned char CounterValue = 29 - ((time(NULL) - 1) % 30);
CountdownGauge->SetValue(CounterValue);
if (CounterValue == 0) {
GenTOTP(Secret);
}
}
void TOTPGen::CopyText(wxCommandEvent& WXUNUSED(event))
{
wxString ToCopy = TOTPField->GetLabel();
if (wxTheClipboard->Open() && !Locked) {
wxTheClipboard->SetData(new wxTextDataObject(ToCopy));
wxTheClipboard->Close();
}
}
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