/*

Most of the source code contained in this file is taken from the source code of
TrueCrypt 7.0a, which is governed by the TrueCrypt License 3.0 that can be found
in the file 'License.txt' in the folder 'TrueCrypt-License'.

Modifications and additions to the original source code (contained in this file)
and all other portions of this file are Copyright (c) 2009-2010 by Kih-Oskh or
Copyright (c) 2012-2013 Josef Schneider <josef@netpage.dk>


Source code in this file is derived from 'Mount\Mount.c'

-------------------------------------------------------------------------------

Original legal notice of the TrueCrypt source:

	 Legal Notice: Some portions of the source code contained in this file were
	 derived from the source code of Encryption for the Masses 2.02a, which is
	 Copyright (c) 1998-2000 Paul Le Roux and which is governed by the 'License
	 Agreement for Encryption for the Masses'. Modifications and additions to
	 the original source code (contained in this file) and all other portions
	 of this file are Copyright (c) 2003-2009 TrueCrypt Developers Association
	 and are governed by the TrueCrypt License 3.0 the full text of which is
	 contained in the file License.txt included in TrueCrypt binary and source
	 code distribution packages.

*/

#include "Tcdefs.h"

#include <time.h>
#include <math.h>
#include <dbt.h>
#include <fcntl.h>
#include <io.h>
#include <sys/stat.h>
#include <windowsx.h>

#include "Apidrvr.h"
#include "BootEncryption.h"
#include "Cmdline.h"
#include "Crypto.h"
#include "Dlgcode.h"
#include "Combo.h"
#include "Keyfiles.h"
#include "Language.h"
#include "../Mount/MainCom.h"
#include "../Mount/Mount.h"
#include "Pkcs5.h"
#include "Random.h"
#include "Registry.h"
#include "Resource.h"
#include "Password.h"
#include "Xml.h"
#include "../Boot/Windows/BootCommon.h"
#include "../Common/Dictionary.h"
#include "../Common/Common.h"
#include "../Common/Resource.h"
#include "../Common/SecurityToken.h"
#include "../Platform/Finally.h"
#include "../Platform/ForEach.h"
#include <Strsafe.h>

#include "ExpandVolume.h"

using namespace VeraCrypt;

const char szExpandVolumeInfo[] =
":: VeraCrypt Expander ::\n\nExpand a VeraCrypt volume on the fly without reformatting\n\n\n\
All kind of volumes (container files, disks and partitions) formatted with \
NTFS are supported. The only condition is that there must be enough free \
space on the host drive or host device of the VeraCrypt volume.\n\n\
Do not use this software to expand an outer volume containing a hidden \
volume, because this destroys the hidden volume!\n\
";

enum timer_ids
{
	TIMER_ID_MAIN = 0xff,
	TIMER_ID_KEYB_LAYOUT_GUARD
};

enum hidden_os_read_only_notif_mode
{
	TC_HIDDEN_OS_READ_ONLY_NOTIF_MODE_NONE = 0,
	TC_HIDDEN_OS_READ_ONLY_NOTIF_MODE_COMPACT,
	TC_HIDDEN_OS_READ_ONLY_NOTIF_MODE_DISABLED
};

#define TIMER_INTERVAL_MAIN					500
#define TIMER_INTERVAL_KEYB_LAYOUT_GUARD	10

namespace VeraCryptExpander
{

BOOL bExplore = FALSE;				/* Display explorer window after mount */
BOOL bBeep = FALSE;					/* Donot beep after mount */
char szFileName[TC_MAX_PATH+1];		/* Volume to mount */
char szDriveLetter[3];				/* Drive Letter to mount */
char commandLineDrive = 0;
BOOL bCacheInDriver = FALSE;		/* Cache any passwords we see */
BOOL bCacheInDriverDefault = FALSE;
BOOL bHistoryCmdLine = FALSE;		/* History control is always disabled */
BOOL bCloseDismountedWindows=TRUE;	/* Close all open explorer windows of dismounted volume */
BOOL bWipeCacheOnExit = FALSE;		/* Wipe password from chace on exit */
BOOL bWipeCacheOnAutoDismount = TRUE;
BOOL bEnableBkgTask = FALSE;
BOOL bCloseBkgTaskWhenNoVolumes = FALSE;
BOOL bDismountOnLogOff = TRUE;
BOOL bDismountOnScreenSaver = TRUE;
BOOL bDismountOnPowerSaving = FALSE;
BOOL bForceAutoDismount = TRUE;
BOOL bForceMount = FALSE;			/* Mount volume even if host file/device already in use */
BOOL bForceUnmount = FALSE;			/* Unmount volume even if it cannot be locked */
BOOL bWipe = FALSE;					/* Wipe driver passwords */
BOOL bAuto = FALSE;					/* Do everything without user input */
BOOL bAutoMountDevices = FALSE;		/* Auto-mount devices */
BOOL bAutoMountFavorites = FALSE;
BOOL bPlaySoundOnHotkeyMountDismount = TRUE;
BOOL bDisplayMsgBoxOnHotkeyDismount = FALSE;
BOOL bHibernationPreventionNotified = FALSE;	/* TRUE if the user has been notified that hibernation was prevented (system encryption) during the session. */
BOOL bHiddenSysLeakProtNotifiedDuringSession = FALSE;	/* TRUE if the user has been notified during the session that unencrypted filesystems and non-hidden VeraCrypt volumes are mounted as read-only under hidden OS. */
BOOL CloseSecurityTokenSessionsAfterMount = FALSE;

BOOL MultipleMountOperationInProgress = FALSE;

BOOL Quit = FALSE;					/* Exit after processing command line */
BOOL ComServerMode = FALSE;
BOOL UsePreferences = TRUE;

int HiddenSysLeakProtectionNotificationStatus = TC_HIDDEN_OS_READ_ONLY_NOTIF_MODE_NONE;
int MaxVolumeIdleTime = -120;
int nCurrentShowType = 0;			/* current display mode, mount, unmount etc */
int nSelectedDriveIndex = -1;		/* Item number of selected drive */

int cmdUnmountDrive = -2;			/* Volume drive letter to unmount (-1 = all) */
Password VolumePassword;			/* Password used for mounting volumes */
Password CmdVolumePassword;			/* Password passed from command line */
BOOL CmdVolumePasswordValid = FALSE;
MountOptions mountOptions;
MountOptions defaultMountOptions;
KeyFile *FirstCmdKeyFile;

HBITMAP hbmLogoBitmapRescaled = NULL;
char OrigKeyboardLayout [8+1] = "00000409";
BOOL bKeyboardLayoutChanged = FALSE;		/* TRUE if the keyboard layout was changed to the standard US keyboard layout (from any other layout). */
BOOL bKeybLayoutAltKeyWarningShown = FALSE;	/* TRUE if the user has been informed that it is not possible to type characters by pressing keys while the right Alt key is held down. */

static KeyFilesDlgParam				hidVolProtKeyFilesParam;
VOLUME_NOTIFICATIONS_LIST	VolumeNotificationsList;

static int bPrebootPasswordDlgMode = FALSE;

static void localcleanup (void)
{
	// Wipe command line
	char *c = GetCommandLineA ();
	wchar_t *wc = GetCommandLineW ();
	burn(c, strlen (c));
	burn(wc, wcslen (wc) * sizeof (wchar_t));

	/* Delete buffered bitmaps (if any) */
	if (hbmLogoBitmapRescaled != NULL)
	{
		DeleteObject ((HGDIOBJ) hbmLogoBitmapRescaled);
		hbmLogoBitmapRescaled = NULL;
	}

	/* These items should have already been cleared by the functions that used them, but we're going to
	clear them for extra security. */
	burn (&VolumePassword, sizeof (VolumePassword));
	burn (&CmdVolumePassword, sizeof (CmdVolumePassword));
	burn (&mountOptions, sizeof (mountOptions));
	burn (&defaultMountOptions, sizeof (defaultMountOptions));
	burn (&szFileName, sizeof(szFileName));

	/* Cleanup common code resources */
	cleanup ();

	RandStop (TRUE);
}


void EndMainDlg (HWND hwndDlg)
{
	if (!bHistory)
	{
		SetWindowText (GetDlgItem (hwndDlg, IDC_VOLUME), "");
	}

	EndDialog (hwndDlg, 0);
}

BOOL CALLBACK MountOptionsDlgProc (HWND hwndDlg, UINT msg, WPARAM wParam, LPARAM lParam)
{
	// dummy (referenced by PasswordDlgProc() )
	return FALSE;
}
BOOL TCBootLoaderOnInactiveSysEncDrive (void)
{
	// dummy (referenced by Dlgcode.c)
	return FALSE;
}

BOOL CheckSysEncMountWithoutPBA (const char *devicePath, BOOL quiet)
{
	// dummy (referenced by Dlgcode.c)
	return FALSE;
}

static void InitMainDialog (HWND hwndDlg)
{
	/* Call the common dialog init code */
	InitDialog (hwndDlg);
	LocalizeDialog (hwndDlg, NULL);

	SendMessage (GetDlgItem (hwndDlg, IDC_VOLUME), CB_LIMITTEXT, TC_MAX_PATH, 0);
	SetWindowTextW (hwndDlg, lpszTitle);

	SendMessage (GetDlgItem (hwndDlg, IDC_INFOEXPAND), WM_SETFONT, (WPARAM) hBoldFont, (LPARAM) TRUE);
	SetWindowText (GetDlgItem (hwndDlg, IDC_INFOEXPAND), szExpandVolumeInfo);

	// Resize the logo bitmap if the user has a non-default DPI
	if (ScreenDPI != USER_DEFAULT_SCREEN_DPI
		&& hbmLogoBitmapRescaled == NULL)	// If not re-called (e.g. after language pack change)
	{
		hbmLogoBitmapRescaled = RenderBitmap (MAKEINTRESOURCE (IDB_LOGO_288DPI),
			GetDlgItem (hwndDlg, IDC_LOGO),
			0, 0, 0, 0, FALSE, TRUE);
	}

	EnableDisableButtons (hwndDlg);
}

void EnableDisableButtons (HWND hwndDlg)
{
	HWND hOKButton = GetDlgItem (hwndDlg, IDOK);
	WORD x;

	x = LOWORD (GetSelectedLong (GetDlgItem (hwndDlg, IDC_DRIVELIST)));

	EnableWindow (hOKButton, TRUE);

}

BOOL VolumeSelected (HWND hwndDlg)
{
	return (GetWindowTextLength (GetDlgItem (hwndDlg, IDC_VOLUME)) > 0);
}


void LoadSettings (HWND hwndDlg)
{
	WipeAlgorithmId savedWipeAlgorithm = TC_WIPE_NONE;

	LoadSysEncSettings (hwndDlg);

	if (LoadNonSysInPlaceEncSettings (&savedWipeAlgorithm) != 0)
		bInPlaceEncNonSysPending = TRUE;

	// If the config file has already been loaded during this session
	if (ConfigBuffer != NULL)
	{
		free (ConfigBuffer);
		ConfigBuffer = NULL;
	}

	// Options
	bExplore =						ConfigReadInt ("OpenExplorerWindowAfterMount", FALSE);
	bCloseDismountedWindows =		ConfigReadInt ("CloseExplorerWindowsOnDismount", TRUE);

	bHistory =						ConfigReadInt ("SaveVolumeHistory", FALSE);

	bCacheInDriverDefault = bCacheInDriver = ConfigReadInt ("CachePasswords", FALSE);
	bWipeCacheOnExit =				ConfigReadInt ("WipePasswordCacheOnExit", FALSE);
	bWipeCacheOnAutoDismount =		ConfigReadInt ("WipeCacheOnAutoDismount", TRUE);

	bStartOnLogon =					ConfigReadInt ("StartOnLogon", FALSE);
	bMountDevicesOnLogon =			ConfigReadInt ("MountDevicesOnLogon", FALSE);
	bMountFavoritesOnLogon =		ConfigReadInt ("MountFavoritesOnLogon", FALSE);

	bEnableBkgTask =				ConfigReadInt ("EnableBackgroundTask", TRUE);
	bCloseBkgTaskWhenNoVolumes =	ConfigReadInt ("CloseBackgroundTaskOnNoVolumes", FALSE);

	bDismountOnLogOff =				ConfigReadInt ("DismountOnLogOff", TRUE);
	bDismountOnPowerSaving =		ConfigReadInt ("DismountOnPowerSaving", FALSE);
	bDismountOnScreenSaver =		ConfigReadInt ("DismountOnScreenSaver", FALSE);
	bForceAutoDismount =			ConfigReadInt ("ForceAutoDismount", TRUE);
	MaxVolumeIdleTime =				ConfigReadInt ("MaxVolumeIdleTime", -60);

	HiddenSectorDetectionStatus =	ConfigReadInt ("HiddenSectorDetectionStatus", 0);

	defaultKeyFilesParam.EnableKeyFiles = ConfigReadInt ("UseKeyfiles", FALSE);

	bPreserveTimestamp = defaultMountOptions.PreserveTimestamp = ConfigReadInt ("PreserveTimestamps", TRUE);
	defaultMountOptions.Removable =	ConfigReadInt ("MountVolumesRemovable", FALSE);
	defaultMountOptions.ReadOnly =	ConfigReadInt ("MountVolumesReadOnly", FALSE);
	defaultMountOptions.ProtectHiddenVolume = FALSE;
	defaultMountOptions.PartitionInInactiveSysEncScope = FALSE;
	defaultMountOptions.RecoveryMode = FALSE;
	defaultMountOptions.UseBackupHeader =  FALSE;

	mountOptions = defaultMountOptions;

	CloseSecurityTokenSessionsAfterMount = ConfigReadInt ("CloseSecurityTokenSessionsAfterMount", 0);

	ConfigReadString ("SecurityTokenLibrary", "", SecurityTokenLibraryPath, sizeof (SecurityTokenLibraryPath) - 1);
	if (SecurityTokenLibraryPath[0])
		InitSecurityTokenLibrary(hwndDlg);

	/* we don't load the history */
}


BOOL SelectItem (HWND hTree, char nLetter)
{
	int i;
	LVITEM item;

	for (i = 0; i < ListView_GetItemCount(hTree); i++)
	{
		memset(&item, 0, sizeof(LVITEM));
		item.mask = LVIF_PARAM;
		item.iItem = i;

		if (ListView_GetItem (hTree, &item) == FALSE)
			return FALSE;
		else
		{
			if (HIWORD (item.lParam) == nLetter)
			{
				memset(&item, 0, sizeof(LVITEM));
				item.state = LVIS_FOCUSED|LVIS_SELECTED;
				item.stateMask = LVIS_FOCUSED|LVIS_SELECTED;
				item.mask = LVIF_STATE;
				item.iItem = i;
				SendMessage(hTree, LVM_SETITEMSTATE, i, (LPARAM) &item);
				return TRUE;
			}
		}
	}

	return TRUE;
}



LPARAM
GetSelectedLong (HWND hTree)
{
	int hItem = ListView_GetSelectionMark (hTree);
	LVITEM item;

	if (nSelectedDriveIndex >= 0)
		hItem = nSelectedDriveIndex;

	memset(&item, 0, sizeof(LVITEM));
	item.mask = LVIF_PARAM;
	item.iItem = hItem;

	if (ListView_GetItem (hTree, &item) == FALSE)
		return MAKELONG (0xffff, 0xffff);
	else
		return item.lParam;
}

LPARAM
GetItemLong (HWND hTree, int itemNo)
{
	LVITEM item;

	memset(&item, 0, sizeof(LVITEM));
	item.mask = LVIF_PARAM;
	item.iItem = itemNo;

	if (ListView_GetItem (hTree, &item) == FALSE)
		return MAKELONG (0xffff, 0xffff);
	else
		return item.lParam;
}

static char PasswordDlgVolume[MAX_PATH + 1];
static BOOL PasswordDialogDisableMountOptions;
static char *PasswordDialogTitleStringId;

/* Except in response to the WM_INITDIALOG message, the dialog box procedure
   should return nonzero if it processes the message, and zero if it does
   not. - see DialogProc */
BOOL CALLBACK ExtcvPasswordDlgProc (HWND hwndDlg, UINT msg, WPARAM wParam, LPARAM lParam)
{
	WORD lw = LOWORD (wParam);
	static Password *szXPwd;
	static int *pkcs5;
	static BOOL* truecryptMode;

	switch (msg)
	{
	case WM_INITDIALOG:
		{
			int i, nIndex;
			szXPwd = ((PasswordDlgParam *) lParam) -> password;
			pkcs5 = ((PasswordDlgParam *) lParam) -> pkcs5;
			truecryptMode = ((PasswordDlgParam *) lParam) -> truecryptMode;
			LocalizeDialog (hwndDlg, "IDD_PASSWORD_DLG");
			DragAcceptFiles (hwndDlg, TRUE);

			if (PasswordDialogTitleStringId)
			{
				SetWindowTextW (hwndDlg, GetString (PasswordDialogTitleStringId));
			}
			else if (strlen (PasswordDlgVolume) > 0)
			{
				wchar_t s[1024];
				const int maxVisibleLen = 40;

				if (strlen (PasswordDlgVolume) > maxVisibleLen)
				{
					string volStr = PasswordDlgVolume;
					StringCbPrintfW (s, sizeof(s), GetString ("ENTER_PASSWORD_FOR"), ("..." + volStr.substr (volStr.size() - maxVisibleLen - 1)).c_str());
				}
				else
					StringCbPrintfW (s, sizeof(s), GetString ("ENTER_PASSWORD_FOR"), PasswordDlgVolume);

				SetWindowTextW (hwndDlg, s);
			}

			/* Populate the PRF algorithms list */
			HWND hComboBox = GetDlgItem (hwndDlg, IDC_PKCS5_PRF_ID);
			SendMessage (hComboBox, CB_RESETCONTENT, 0, 0);

			nIndex = SendMessageW (hComboBox, CB_ADDSTRING, 0, (LPARAM) GetString ("AUTODETECTION"));
			SendMessage (hComboBox, CB_SETITEMDATA, nIndex, (LPARAM) 0);

			for (i = FIRST_PRF_ID; i <= LAST_PRF_ID; i++)
			{
				nIndex = SendMessage (hComboBox, CB_ADDSTRING, 0, (LPARAM) get_pkcs5_prf_name(i));
				SendMessage (hComboBox, CB_SETITEMDATA, nIndex, (LPARAM) i);
			}

			/* make autodetection the default */
			SendMessage (hComboBox, CB_SETCURSEL, 0, 0);

			SendMessage (GetDlgItem (hwndDlg, IDC_PASSWORD), EM_LIMITTEXT, MAX_PASSWORD, 0);
			SendMessage (GetDlgItem (hwndDlg, IDC_CACHE), BM_SETCHECK, bCacheInDriver ? BST_CHECKED:BST_UNCHECKED, 0);

			SetCheckBox (hwndDlg, IDC_KEYFILES_ENABLE, KeyFilesEnable);

			mountOptions.PartitionInInactiveSysEncScope = bPrebootPasswordDlgMode;

			if (bPrebootPasswordDlgMode)
			{
				SendMessage (hwndDlg, TC_APPMSG_PREBOOT_PASSWORD_MODE, 0, 0);
			}

			if (PasswordDialogDisableMountOptions)
			{
				EnableWindow (GetDlgItem (hwndDlg, IDC_CACHE), FALSE);
				EnableWindow (GetDlgItem (hwndDlg, IDC_MOUNT_OPTIONS), FALSE);
			}

			/* No support for mounting TrueCrypt volumes */				
			SetCheckBox (hwndDlg, IDC_TRUECRYPT_MODE, FALSE);
			EnableWindow (GetDlgItem (hwndDlg, IDC_TRUECRYPT_MODE), FALSE);

			if (!SetForegroundWindow (hwndDlg) && (FavoriteMountOnArrivalInProgress))
			{
				SetWindowPos (hwndDlg, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE);

				FLASHWINFO flash;
				flash.cbSize = sizeof (flash);
				flash.dwFlags = FLASHW_ALL | FLASHW_TIMERNOFG;
				flash.dwTimeout = 0;
				flash.hwnd = hwndDlg;
				flash.uCount = 0;

				FlashWindowEx (&flash);

				SetWindowPos (hwndDlg, HWND_NOTOPMOST, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE);
			}
		}
		return 0;

	case TC_APPMSG_PREBOOT_PASSWORD_MODE:
		{
			/* No support for mounting TrueCrypt system partition */				
			SetCheckBox (hwndDlg, IDC_TRUECRYPT_MODE, FALSE);
			EnableWindow (GetDlgItem (hwndDlg, IDC_TRUECRYPT_MODE), FALSE);

			/* Repopulate the PRF algorithms list with algorithms that support system encryption */
			HWND hComboBox = GetDlgItem (hwndDlg, IDC_PKCS5_PRF_ID);
			SendMessage (hComboBox, CB_RESETCONTENT, 0, 0);

			int i, nIndex = SendMessageW (hComboBox, CB_ADDSTRING, 0, (LPARAM) GetString ("AUTODETECTION"));
			SendMessage (hComboBox, CB_SETITEMDATA, nIndex, (LPARAM) 0);

			for (i = FIRST_PRF_ID; i <= LAST_PRF_ID; i++)
			{
				if (HashForSystemEncryption(i))
				{
					nIndex = SendMessage (hComboBox, CB_ADDSTRING, 0, (LPARAM) get_pkcs5_prf_name(i));
					SendMessage (hComboBox, CB_SETITEMDATA, nIndex, (LPARAM) i);
				}
			}

			/* make autodetection the default */
			SendMessage (hComboBox, CB_SETCURSEL, 0, 0);

			ToBootPwdField (hwndDlg, IDC_PASSWORD);

			// Attempt to wipe the password stored in the input field buffer
			char tmp[MAX_PASSWORD+1];
			memset (tmp, 'X', MAX_PASSWORD);
			tmp [MAX_PASSWORD] = 0;
			SetWindowText (GetDlgItem (hwndDlg, IDC_PASSWORD), tmp);
			SetWindowText (GetDlgItem (hwndDlg, IDC_PASSWORD), "");

			StringCbPrintfA (OrigKeyboardLayout, sizeof(OrigKeyboardLayout),"%08X", (DWORD) GetKeyboardLayout (NULL) & 0xFFFF);

			DWORD keybLayout = (DWORD) LoadKeyboardLayout ("00000409", KLF_ACTIVATE);

			if (keybLayout != 0x00000409 && keybLayout != 0x04090409)
			{
				Error ("CANT_CHANGE_KEYB_LAYOUT_FOR_SYS_ENCRYPTION", hwndDlg);
				EndDialog (hwndDlg, IDCANCEL);
				return 1;
			}

			if (SetTimer (hwndDlg, TIMER_ID_KEYB_LAYOUT_GUARD, TIMER_INTERVAL_KEYB_LAYOUT_GUARD, NULL) == 0)
			{
				Error ("CANNOT_SET_TIMER", hwndDlg);
				EndDialog (hwndDlg, IDCANCEL);
				return 1;
			}

			SetCheckBox (hwndDlg, IDC_SHOW_PASSWORD, FALSE);
			EnableWindow (GetDlgItem (hwndDlg, IDC_SHOW_PASSWORD), FALSE);

			SendMessage (GetDlgItem (hwndDlg, IDC_PASSWORD), EM_SETPASSWORDCHAR, '*', 0);
			InvalidateRect (GetDlgItem (hwndDlg, IDC_PASSWORD), NULL, TRUE);

			bPrebootPasswordDlgMode = TRUE;
		}
		return 1;

	case WM_TIMER:
		switch (wParam)
		{
		case TIMER_ID_KEYB_LAYOUT_GUARD:
			if (bPrebootPasswordDlgMode)
			{
				DWORD keybLayout = (DWORD) GetKeyboardLayout (NULL);

				if (keybLayout != 0x00000409 && keybLayout != 0x04090409)
				{
					// Keyboard layout is not standard US

					// Attempt to wipe the password stored in the input field buffer
					char tmp[MAX_PASSWORD+1];
					memset (tmp, 'X', MAX_PASSWORD);
					tmp [MAX_PASSWORD] = 0;
					SetWindowText (GetDlgItem (hwndDlg, IDC_PASSWORD), tmp);
					SetWindowText (GetDlgItem (hwndDlg, IDC_PASSWORD), "");

					keybLayout = (DWORD) LoadKeyboardLayout ("00000409", KLF_ACTIVATE);

					if (keybLayout != 0x00000409 && keybLayout != 0x04090409)
					{
						KillTimer (hwndDlg, TIMER_ID_KEYB_LAYOUT_GUARD);
						Error ("CANT_CHANGE_KEYB_LAYOUT_FOR_SYS_ENCRYPTION", hwndDlg);
						EndDialog (hwndDlg, IDCANCEL);
						return 1;
					}

					wchar_t szTmp [4096];
					StringCbCopyW (szTmp, sizeof(szTmp), GetString ("KEYB_LAYOUT_CHANGE_PREVENTED"));
					StringCbCatW (szTmp, sizeof(szTmp), L"\n\n");
					StringCbCatW (szTmp, sizeof(szTmp), GetString ("KEYB_LAYOUT_SYS_ENC_EXPLANATION"));
					MessageBoxW (MainDlg, szTmp, lpszTitle, MB_ICONWARNING | MB_SETFOREGROUND | MB_TOPMOST);
				}
			}
			return 1;
		}
		return 0;

	case WM_COMMAND:

		if (lw == IDC_MOUNT_OPTIONS)
		{
			DialogBoxParamW (hInst, 
				MAKEINTRESOURCEW (IDD_MOUNT_OPTIONS), hwndDlg,
				(DLGPROC) MountOptionsDlgProc, (LPARAM) &mountOptions);

			if (!bPrebootPasswordDlgMode && mountOptions.PartitionInInactiveSysEncScope)
				SendMessage (hwndDlg, TC_APPMSG_PREBOOT_PASSWORD_MODE, 0, 0);

			return 1;
		}

		if (lw == IDC_SHOW_PASSWORD)
		{
			SendMessage (GetDlgItem (hwndDlg, IDC_PASSWORD),
						EM_SETPASSWORDCHAR,
						GetCheckBox (hwndDlg, IDC_SHOW_PASSWORD) ? 0 : '*',
						0);
			InvalidateRect (GetDlgItem (hwndDlg, IDC_PASSWORD), NULL, TRUE);
			return 1;
		}

		if (lw == IDC_KEY_FILES)
		{
			KeyFilesDlgParam param;
			param.EnableKeyFiles = KeyFilesEnable;
			param.FirstKeyFile = FirstKeyFile;

			if (IDOK == DialogBoxParamW (hInst,
				MAKEINTRESOURCEW (IDD_KEYFILES), hwndDlg,
				(DLGPROC) KeyFilesDlgProc, (LPARAM) &param))
			{
				KeyFilesEnable = param.EnableKeyFiles;
				FirstKeyFile = param.FirstKeyFile;

				SetCheckBox (hwndDlg, IDC_KEYFILES_ENABLE, KeyFilesEnable);
			}

			return 1;
		}

		if (lw == IDC_KEYFILES_ENABLE)
		{
			KeyFilesEnable = GetCheckBox (hwndDlg, IDC_KEYFILES_ENABLE);

			return 1;
		}

		if (lw == IDCANCEL || lw == IDOK)
		{
			char tmp[MAX_PASSWORD+1];
			
			if (lw == IDOK)
			{
				if (mountOptions.ProtectHiddenVolume && hidVolProtKeyFilesParam.EnableKeyFiles)
					KeyFilesApply (hwndDlg, &mountOptions.ProtectedHidVolPassword, hidVolProtKeyFilesParam.FirstKeyFile);

				GetWindowText (GetDlgItem (hwndDlg, IDC_PASSWORD), (LPSTR) szXPwd->Text, MAX_PASSWORD + 1);
				szXPwd->Length = strlen ((char *) szXPwd->Text);

				bCacheInDriver = IsButtonChecked (GetDlgItem (hwndDlg, IDC_CACHE));	 
				*pkcs5 = (int) SendMessage (GetDlgItem (hwndDlg, IDC_PKCS5_PRF_ID), CB_GETITEMDATA, SendMessage (GetDlgItem (hwndDlg, IDC_PKCS5_PRF_ID), CB_GETCURSEL, 0, 0), 0);
				*truecryptMode = GetCheckBox (hwndDlg, IDC_TRUECRYPT_MODE);
				/* SHA-256 is not supported by TrueCrypt */
				if (	(*truecryptMode) 
					&& ((*pkcs5 == SHA256) || (mountOptions.ProtectHiddenVolume && mountOptions.ProtectedHidVolPkcs5Prf == SHA256))
					)
				{
					Error ("ALGO_NOT_SUPPORTED_FOR_TRUECRYPT_MODE", hwndDlg);
					return 1;
				}
			}

			// Attempt to wipe password stored in the input field buffer
			memset (tmp, 'X', MAX_PASSWORD);
			tmp[MAX_PASSWORD] = 0;
			SetWindowText (GetDlgItem (hwndDlg, IDC_PASSWORD), tmp);	
			SetWindowText (GetDlgItem (hwndDlg, IDC_PASSWORD_PROT_HIDVOL), tmp);	

			if (hidVolProtKeyFilesParam.FirstKeyFile != NULL)
			{
				KeyFileRemoveAll (&hidVolProtKeyFilesParam.FirstKeyFile);
				hidVolProtKeyFilesParam.EnableKeyFiles = FALSE;
			}

			if (bPrebootPasswordDlgMode)
			{
				KillTimer (hwndDlg, TIMER_ID_KEYB_LAYOUT_GUARD);

				// Restore the original keyboard layout
				if (LoadKeyboardLayout (OrigKeyboardLayout, KLF_ACTIVATE | KLF_SUBSTITUTE_OK) == NULL) 
					Warning ("CANNOT_RESTORE_KEYBOARD_LAYOUT", hwndDlg);
			}

			EndDialog (hwndDlg, lw);
			return 1;
		}
		return 0;

	case WM_CONTEXTMENU:
		{
			RECT buttonRect;
			GetWindowRect (GetDlgItem (hwndDlg, IDC_KEY_FILES), &buttonRect);

			if (LOWORD (lParam) >= buttonRect.left && LOWORD (lParam) <= buttonRect.right
				&& HIWORD (lParam) >= buttonRect.top && HIWORD (lParam) <= buttonRect.bottom)
			{
				// The "Keyfiles" button has been right-clicked

				KeyFilesDlgParam param;
				param.EnableKeyFiles = KeyFilesEnable;
				param.FirstKeyFile = FirstKeyFile;

				POINT popupPos;
				popupPos.x = buttonRect.left + 2;
				popupPos.y = buttonRect.top + 2;

				if (KeyfilesPopupMenu (hwndDlg, popupPos, &param))
				{
					KeyFilesEnable = param.EnableKeyFiles;
					FirstKeyFile = param.FirstKeyFile;
					SetCheckBox (hwndDlg, IDC_KEYFILES_ENABLE, KeyFilesEnable);
				}
			}
		}
		break; 

	case WM_DROPFILES:
		{
			HDROP hdrop = (HDROP) wParam;
			int i = 0, count = DragQueryFile (hdrop, 0xFFFFFFFF, NULL, 0);

			while (count-- > 0)
			{
				KeyFile *kf = (KeyFile *) malloc (sizeof (KeyFile));
				if (kf)
				{
					DragQueryFile (hdrop, i++, kf->FileName, sizeof (kf->FileName));
					FirstKeyFile = KeyFileAdd (FirstKeyFile, kf);
					KeyFilesEnable = TRUE;
				}
			}

			SetCheckBox (hwndDlg, IDC_KEYFILES_ENABLE, KeyFilesEnable);
			DragFinish (hdrop);
		}
		return 1;
	}

	return 0;
}

void SaveSettings (HWND hwndDlg)
{
	// dummy
}

int BackupVolumeHeader (HWND hwndDlg, BOOL bRequireConfirmation, char *lpszVolume)
{
	// dummy
	return 0;
}

int RestoreVolumeHeader (HWND hwndDlg, char *lpszVolume)
{
	// dummy
	return 0;
}

int ExtcvAskVolumePassword (HWND hwndDlg, Password *password, int *pkcs5, BOOL* truecryptMode, char *titleStringId, BOOL enableMountOptions)
{
	int result;
	PasswordDlgParam dlgParam;

	PasswordDialogTitleStringId = titleStringId;
	PasswordDialogDisableMountOptions = !enableMountOptions;

	dlgParam.password = password;
	dlgParam.pkcs5 = pkcs5;
	dlgParam.truecryptMode = truecryptMode;

	result = DialogBoxParamW (hInst, 
		MAKEINTRESOURCEW (IDD_PASSWORD_DLG), hwndDlg,
		(DLGPROC) ExtcvPasswordDlgProc, (LPARAM) &dlgParam);

	if (result != IDOK)
	{
		password->Length = 0;
		*pkcs5 = 0;
		*truecryptMode = FALSE;
		burn (&mountOptions.ProtectedHidVolPassword, sizeof (mountOptions.ProtectedHidVolPassword));
		burn (&mountOptions.ProtectedHidVolPkcs5Prf, sizeof (mountOptions.ProtectedHidVolPkcs5Prf));
	}

	return result == IDOK;
}

// GUI actions

static BOOL SelectContainer (HWND hwndDlg)
{
	if (BrowseFiles (hwndDlg, "OPEN_VOL_TITLE", szFileName, bHistory, FALSE, NULL) == FALSE)
		return FALSE;

	AddComboItem (GetDlgItem (hwndDlg, IDC_VOLUME), szFileName, bHistory);
	VeraCryptExpander::EnableDisableButtons (hwndDlg);
	SetFocus (GetDlgItem (hwndDlg, IDC_DRIVELIST));
	return TRUE;
}

static BOOL SelectPartition (HWND hwndDlg)
{
	int nResult = DialogBoxParamW (hInst, MAKEINTRESOURCEW (IDD_RAWDEVICES_DLG), hwndDlg,
		(DLGPROC) RawDevicesDlgProc, (LPARAM) & szFileName[0]);
	if (nResult == IDOK)
	{
		AddComboItem (GetDlgItem (hwndDlg, IDC_VOLUME), szFileName, bHistory);
		VeraCryptExpander::EnableDisableButtons (hwndDlg);
		SetFocus (GetDlgItem (hwndDlg, IDC_DRIVELIST));
		return TRUE;
	}

	return FALSE;
}


/* Except in response to the WM_INITDIALOG and WM_ENDSESSION messages, the dialog box procedure
   should return nonzero if it processes a message, and zero if it does not. */
BOOL CALLBACK MainDialogProc (HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
	static UINT taskBarCreatedMsg;
	WORD lw = LOWORD (wParam);

	switch (uMsg)
	{

	case WM_INITDIALOG:
		{
			int exitCode = 0;

			MainDlg = hwndDlg;

			// Set critical default options in case UsePreferences is false
			bPreserveTimestamp = defaultMountOptions.PreserveTimestamp = TRUE;

			if (UsePreferences)
			{
				// General preferences
				VeraCryptExpander::LoadSettings (hwndDlg);

				// Keyfiles
				LoadDefaultKeyFilesParam ();
				RestoreDefaultKeyFilesParam ();
			}

			InitMainDialog (hwndDlg);

			// Quit
			if (Quit)
			{
				exit (exitCode);
			}

			Silent = FALSE;
		}
		return 0;

	case WM_SYSCOMMAND:
		if (lw == IDC_ABOUT)
		{
			DialogBoxW (hInst, MAKEINTRESOURCEW (IDD_ABOUT_DLG), hwndDlg, (DLGPROC) AboutDlgProc);
			return 1;
		}
		return 0;

	case WM_ENDSESSION:
		VeraCryptExpander::EndMainDlg (hwndDlg);
		localcleanup ();
		return 0;

	case WM_COMMAND:

		if (lw == IDCANCEL || lw == IDC_EXIT)
		{
			VeraCryptExpander::EndMainDlg (hwndDlg);
			return 1;
		}

		if ( lw == IDOK )
		{
			if (!VeraCryptExpander::VolumeSelected(hwndDlg))
			{
				Warning ("NO_VOLUME_SELECTED", hwndDlg);
			}
			else
			{
				char fileName[MAX_PATH];
				GetWindowText (GetDlgItem (hwndDlg, IDC_VOLUME), fileName, sizeof (fileName));
				ExpandVolumeWizard(hwndDlg, (char*)fileName);
			}
			return 1;
		}

		if (lw == IDM_ABOUT )
		{
			DialogBoxW (hInst, MAKEINTRESOURCEW (IDD_ABOUT_DLG), hwndDlg, (DLGPROC) AboutDlgProc);
			return 1;
		}

		if (lw == IDM_HOMEPAGE )
		{
			ArrowWaitCursor ();
			ShellExecute (NULL, "open", "https://veracrypt.codeplex.com", NULL, NULL, SW_SHOWNORMAL);
			Sleep (200);
			NormalCursor ();

			return 1;
		}

		if (lw == IDC_SELECT_FILE)
		{
			SelectContainer (hwndDlg);
			return 1;
		}

		if (lw == IDC_SELECT_DEVICE)
		{
			SelectPartition (hwndDlg);
			return 1;
		}

		return 0;

	case WM_CLOSE:
		VeraCryptExpander::EndMainDlg (hwndDlg);
		return 1;

	default:
		;
	}

	return 0;
}

}


int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, char *lpszCommandLine, int nCmdShow)
{
	int status;
	atexit (VeraCryptExpander::localcleanup);
	SetProcessShutdownParameters (0x100, 0);

	VirtualLock (&VeraCryptExpander::VolumePassword, sizeof (VeraCryptExpander::VolumePassword));
	VirtualLock (&VeraCryptExpander::CmdVolumePassword, sizeof (VeraCryptExpander::CmdVolumePassword));
	VirtualLock (&VeraCryptExpander::mountOptions, sizeof (VeraCryptExpander::mountOptions));
	VirtualLock (&VeraCryptExpander::defaultMountOptions, sizeof (VeraCryptExpander::defaultMountOptions));
	VirtualLock (&VeraCryptExpander::szFileName, sizeof(VeraCryptExpander::szFileName));

	InitCommonControls ();
	InitApp (hInstance, lpszCommandLine);

	/* application title */
	lpszTitle = L"VeraCrypt Expander";

	status = DriverAttach ();
	if (status != 0)
	{
		if (status == ERR_OS_ERROR)
			handleWin32Error (NULL);
		else
			handleError (NULL, status);

		AbortProcess ("NODRIVER");
	}

	/* Create the main dialog box */
	DialogBoxParamW (hInstance, MAKEINTRESOURCEW (IDD_MOUNT_DLG), NULL, (DLGPROC) VeraCryptExpander::MainDialogProc,
			(LPARAM) lpszCommandLine);

	/* Terminate */
	return 0;
}