Linux & MacOSX: automatically check TrueCryptMode in password dialog when selecting a container file that has the .tc file extension

src/Main/Forms/ChangePasswordDialog.cpp

@@ -24,6 +24,12 @@ namespace VeraCrypt
 		bool enableNewPassword = false;
 		bool enableNewKeyfiles = false;
 		bool enablePkcs5Prf = false;
+		bool isTrueCryptFile = false;
+		
+		if (volumePath && volumePath->HasTrueCryptExtension ())
+		{
+			isTrueCryptFile = true;
+		}
 
 		switch (mode)
 		{
@@ -54,6 +60,7 @@ namespace VeraCrypt
 
 		CurrentPasswordPanel = new VolumePasswordPanel (this, NULL, password, false, keyfiles, false, true, true, false, true, true);
 		CurrentPasswordPanel->UpdateEvent.Connect (EventConnector <ChangePasswordDialog> (this, &ChangePasswordDialog::OnPasswordPanelUpdate));
+		CurrentPasswordPanel->SetTrueCryptMode (isTrueCryptFile);
 		CurrentPasswordPanelSizer->Add (CurrentPasswordPanel, 1, wxALL | wxEXPAND);
 
 		NewPasswordPanel = new VolumePasswordPanel (this, NULL, newPassword, true, newKeyfiles, false, enableNewPassword, enableNewKeyfiles, enableNewPassword, enablePkcs5Prf);

src/Main/Forms/MountOptionsDialog.cpp

@@ -36,6 +36,12 @@ namespace VeraCrypt
 
 		PasswordPanel = new VolumePasswordPanel (this, &options, options.Password, disableMountOptions, options.Keyfiles, !disableMountOptions, true, true, false, true, true);
 		PasswordPanel->SetCacheCheckBoxValidator (wxGenericValidator (&Options.CachePassword));
+		
+		if (options.Path && options.Path->HasTrueCryptExtension() && !disableMountOptions 
+			&& !options.TrueCryptMode && (options.Pim <= 0))
+		{
+			PasswordPanel->SetTrueCryptMode (true);	
+		}
 
 		PasswordSizer->Add (PasswordPanel, 1, wxALL | wxEXPAND);
 

src/Main/Forms/VolumePasswordPanel.cpp

@@ -306,6 +306,16 @@ namespace VeraCrypt
 	{
 		return TrueCryptModeCheckBox->GetValue ();
 	}
+	
+	void VolumePasswordPanel::SetTrueCryptMode (bool trueCryptMode)
+	{
+		bool bEnablePIM = !trueCryptMode;
+		TrueCryptModeCheckBox->SetValue (trueCryptMode);
+		PimCheckBox->Enable (bEnablePIM);
+		VolumePimStaticText->Enable (bEnablePIM);
+		VolumePimTextCtrl->Enable (bEnablePIM);
+		VolumePimHelpStaticText->Enable (bEnablePIM);
+	}
 
 	int VolumePasswordPanel::GetHeaderWipeCount () const
 	{

src/Main/Forms/VolumePasswordPanel.h

@@ -32,6 +32,7 @@ namespace VeraCrypt
 		shared_ptr <Pkcs5Kdf> GetPkcs5Kdf (bool bTrueCryptMode, bool &bUnsupportedKdf) const;
 		int GetVolumePim () const;
 		bool GetTrueCryptMode () const;
+		void SetTrueCryptMode (bool trueCryptMode);
 		int GetHeaderWipeCount () const;
 		void SetCacheCheckBoxValidator (const wxGenericValidator &validator) { CacheCheckBox->SetValidator (validator); }
 		void SetFocusToPasswordTextCtrl () { PasswordTextCtrl->SetSelection (-1, -1); PasswordTextCtrl->SetFocus(); }

src/Volume/Volume.h

@@ -39,6 +39,33 @@ namespace VeraCrypt
 
 		bool IsDevice () const { return FilesystemPath (Data).IsBlockDevice() || FilesystemPath (Data).IsCharacterDevice(); }
 		bool IsEmpty () const { return Data.empty(); }
+		
+		wstring GetExtension () const
+		{
+			if (Data.empty() || (Data.size() == 1))
+				return L"";
+			else
+			{
+				size_t pos = Data.find_last_of (L'.');
+				if (pos == string::npos)
+					return L"";
+				return Data.substr (pos + 1);
+			}
+		}
+		
+		bool HasTrueCryptExtension () const
+		{
+			wstring sExt = GetExtension ();
+			if ((sExt.size () == 2) 
+				&& (sExt[0] == L't' || sExt[0] == L'T')
+				&& (sExt[1] == L'c' || sExt[1] == L'C')
+				)
+			{
+				return true;
+			}
+			else
+				return false;
+		}
 
 	protected:
 		wstring Data;