| 1 |
/* wptCryptdiskSrv.cpp - Server application for Cryptdisk |
| 2 |
* |
| 3 |
* Control program for a virtual disk driver for Windows NT/2000/XP. |
| 4 |
* Copyright (C) 1999, 2000, 2001, 2002 Bo Brantén. |
| 5 |
* |
| 6 |
* Heavily modified for the use with Cryptdisk by Timo Schulz |
| 7 |
* (C) 2004 Timo Schulz |
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|
| 9 |
This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
| 11 |
the Free Software Foundation; either version 2 of the License, or |
| 12 |
(at your option) any later version. |
| 13 |
This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 |
GNU General Public License for more details. |
| 17 |
You should have received a copy of the GNU General Public License |
| 18 |
along with this program; if not, write to the Free Software |
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
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*/ |
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|
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#ifdef HAVE_CONFIG_H |
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#include <config.h> |
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#endif |
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|
| 26 |
#include <windows.h> |
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#include <winioctl.h> |
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#include <stdio.h> |
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#include <sys/types.h> |
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|
| 31 |
#define PGM_NAME "CryptdiskSrv" |
| 32 |
|
| 33 |
/* remember to change the values in wptErrors.h also */ |
| 34 |
#define CDISK_ERR_LOCK 201 |
| 35 |
#define CDISK_ERR_MOUNT 202 |
| 36 |
#define CDISK_ERR_UMOUNT 203 |
| 37 |
#define CDISK_ERR_OPEN 204 |
| 38 |
#define CDISK_ERR_BUSY 205 |
| 39 |
#define CDISK_ERR_QUERY 206 |
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|
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#define DEVICE_BASE_NAME "\\FileDisk" |
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#define DEVICE_DIR_NAME "\\Device" DEVICE_BASE_NAME |
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#define DEVICE_NAME_PREFIX DEVICE_DIR_NAME DEVICE_BASE_NAME |
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|
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#define FILE_DEVICE_FILE_DISK 0x8000 |
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|
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#define IOCTL_FILE_DISK_OPEN_FILE CTL_CODE(FILE_DEVICE_FILE_DISK, 0x800, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS) |
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#define IOCTL_FILE_DISK_CLOSE_FILE CTL_CODE(FILE_DEVICE_FILE_DISK, 0x801, METHOD_BUFFERED, FILE_READ_ACCESS | FILE_WRITE_ACCESS) |
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#define IOCTL_FILE_DISK_QUERY_FILE CTL_CODE(FILE_DEVICE_FILE_DISK, 0x802, METHOD_BUFFERED, FILE_READ_ACCESS) |
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|
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enum cmd_t { |
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CMD_MOUNT =0, |
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CMD_NEW =1, |
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CMD_UMOUNT =2, |
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CMD_UMOUNT2 =3, |
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}; |
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|
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struct private_ofi_s { |
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INT forced; |
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INT cmd; |
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INT devnum; |
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CHAR drvlet; |
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LARGE_INTEGER filesize; |
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BOOLEAN readonly; |
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USHORT flen; |
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UCHAR fname[MAX_PATH+1]; |
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}; |
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|
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|
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typedef struct _OPEN_FILE_INFORMATION { |
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LARGE_INTEGER FileSize; |
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BOOLEAN ReadOnly; |
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USHORT FileNameLength; |
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UCHAR FileName[1]; |
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} OPEN_FILE_INFORMATION, *POPEN_FILE_INFORMATION; |
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|
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|
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static struct private_ofi_s ofi; |
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static HANDLE wait_ev = NULL; |
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|
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static void |
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print_lasterr (char * prefix) |
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{ |
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LPVOID msg; |
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|
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FormatMessage( |
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FORMAT_MESSAGE_ALLOCATE_BUFFER | |
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FORMAT_MESSAGE_FROM_SYSTEM | |
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FORMAT_MESSAGE_IGNORE_INSERTS, |
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NULL, |
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GetLastError(), |
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0, |
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(LPTSTR) &msg, |
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0, |
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NULL |
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); |
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MessageBox (NULL, (LPTSTR)msg, prefix, MB_ICONERROR|MB_OK); |
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LocalFree (msg); |
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} |
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|
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|
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int |
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filedisk_mount (int DeviceNumber, |
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POPEN_FILE_INFORMATION ofi, |
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char drivelet, |
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BOOLEAN CdImage) |
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{ |
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char VolumeName[] = "\\\\.\\ :"; |
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char DeviceName[255]; |
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HANDLE Device; |
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DWORD BytesReturned; |
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|
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VolumeName[4] = drivelet; |
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|
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Device = CreateFile (VolumeName, |
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GENERIC_READ | GENERIC_WRITE, |
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FILE_SHARE_READ | FILE_SHARE_WRITE, |
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NULL, |
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OPEN_EXISTING, |
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FILE_FLAG_NO_BUFFERING, |
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NULL); |
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if (Device != INVALID_HANDLE_VALUE) { |
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SetLastError (ERROR_BUSY); |
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print_lasterr (&VolumeName[4]); |
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return CDISK_ERR_BUSY; |
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} |
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|
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if (CdImage) |
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sprintf (DeviceName, DEVICE_NAME_PREFIX "Cd" "%u", DeviceNumber); |
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else |
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sprintf (DeviceName, DEVICE_NAME_PREFIX "%u", DeviceNumber); |
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|
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if (!DefineDosDevice (DDD_RAW_TARGET_PATH, |
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&VolumeName[4], |
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DeviceName)) { |
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print_lasterr (&VolumeName[4]); |
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return CDISK_ERR_OPEN; |
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} |
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|
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Device = CreateFile (VolumeName, |
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GENERIC_READ | GENERIC_WRITE, |
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FILE_SHARE_READ | FILE_SHARE_WRITE, |
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NULL, |
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OPEN_EXISTING, |
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FILE_FLAG_NO_BUFFERING, |
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NULL); |
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|
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if (Device == INVALID_HANDLE_VALUE) { |
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print_lasterr (&VolumeName[4]); |
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DefineDosDevice (DDD_REMOVE_DEFINITION, &VolumeName[4], NULL); |
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return CDISK_ERR_OPEN; |
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} |
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|
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if (!DeviceIoControl (Device, |
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IOCTL_FILE_DISK_OPEN_FILE, |
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ofi, |
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sizeof(OPEN_FILE_INFORMATION) + ofi->FileNameLength - 1, |
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NULL, 0, &BytesReturned, NULL)) { |
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print_lasterr ("Cryptdisk Error"); |
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DefineDosDevice (DDD_REMOVE_DEFINITION, &VolumeName[4], NULL); |
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return CDISK_ERR_MOUNT; |
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} |
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|
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return 0; |
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} |
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|
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|
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static int |
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filedisk_unmount2 (char drivelet, int flags, int forced) |
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{ |
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char VolumeName[60] = "\\\\.\\ :"; |
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HANDLE Device; |
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DWORD BytesReturned; |
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|
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if (!flags) |
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VolumeName[4] = drivelet; |
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else if (flags & 1) |
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sprintf(VolumeName,"\\\\.\\FileDisk%d", drivelet); |
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else if (flags & 2) |
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sprintf(VolumeName,"\\\\.\\FileDiskCd%d",drivelet); |
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|
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Device = CreateFile (VolumeName, |
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GENERIC_READ | GENERIC_WRITE, |
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FILE_SHARE_READ | FILE_SHARE_WRITE, |
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NULL, |
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OPEN_EXISTING, |
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FILE_FLAG_NO_BUFFERING, |
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NULL); |
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if (Device == INVALID_HANDLE_VALUE) { |
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if (forced) |
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print_lasterr(&VolumeName[4]); |
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return CDISK_ERR_OPEN; |
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} |
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|
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if (!DeviceIoControl (Device, |
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FSCTL_LOCK_VOLUME, |
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NULL, 0, NULL, 0, |
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&BytesReturned, NULL)) { |
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if (forced) { |
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print_lasterr(&VolumeName[4]); |
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return CDISK_ERR_LOCK; |
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} |
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} |
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|
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if (!DeviceIoControl (Device, |
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IOCTL_FILE_DISK_CLOSE_FILE, |
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NULL, 0, NULL, 0, |
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&BytesReturned, NULL )) { |
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if (forced) |
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print_lasterr ("Cryptdisk Error"); |
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return CDISK_ERR_UMOUNT; |
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} |
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|
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if (!DeviceIoControl ( |
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Device, FSCTL_DISMOUNT_VOLUME, |
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NULL, 0, NULL, 0, |
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&BytesReturned, NULL)) { |
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if (forced) |
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print_lasterr (&VolumeName[4]); |
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return CDISK_ERR_UMOUNT; |
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} |
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|
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if (!DeviceIoControl (Device, |
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FSCTL_UNLOCK_VOLUME, |
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NULL, 0, NULL, 0, |
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&BytesReturned, NULL)) { |
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if (forced) { |
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print_lasterr (&VolumeName[4]); |
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return CDISK_ERR_LOCK; |
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} |
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} |
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|
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CloseHandle (Device); |
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|
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if (!DefineDosDevice ( |
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DDD_REMOVE_DEFINITION, |
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&VolumeName[4], NULL)) { |
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if (forced) |
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print_lasterr (&VolumeName[4]); |
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return CDISK_ERR_UMOUNT; |
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} |
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|
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return 0; |
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} |
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|
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int |
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filedisk_unmount (char drivelet, int forced) |
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{ |
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char i; |
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|
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if (drivelet) { |
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int rc = filedisk_unmount2 (drivelet, 0, forced); |
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if (rc) |
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print_lasterr ("Unmount"); |
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return rc; |
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} |
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for (i=0; i<20;i++) { |
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if (filedisk_unmount2 (i, 1, 0) == CDISK_ERR_OPEN) |
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break; |
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} |
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for (i=0; i<20;i++) { |
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if (filedisk_unmount2 (i, 2, 0) == CDISK_ERR_OPEN) |
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break; |
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} |
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return 0; |
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} |
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|
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|
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int |
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filedisk_status (char drivelet, LARGE_INTEGER * size, int * rdonly) |
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{ |
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char VolumeName[] = "\\\\.\\ :"; |
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HANDLE Device; |
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POPEN_FILE_INFORMATION ofi; |
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DWORD BytesReturned; |
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|
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VolumeName[4] = drivelet; |
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|
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Device = CreateFile (VolumeName, |
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GENERIC_READ, |
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FILE_SHARE_READ | FILE_SHARE_WRITE, |
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NULL, |
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OPEN_EXISTING, |
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FILE_FLAG_NO_BUFFERING, |
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NULL); |
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|
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if (Device == INVALID_HANDLE_VALUE) { |
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print_lasterr(&VolumeName[4]); |
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return CDISK_ERR_OPEN; |
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} |
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|
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ofi = (POPEN_FILE_INFORMATION)malloc (sizeof(OPEN_FILE_INFORMATION) + MAX_PATH); |
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|
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if (!DeviceIoControl (Device, |
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IOCTL_FILE_DISK_QUERY_FILE, |
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NULL, |
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0, |
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ofi, |
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sizeof(OPEN_FILE_INFORMATION) + MAX_PATH, |
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&BytesReturned, NULL)) { |
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print_lasterr (&VolumeName[4]); |
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return CDISK_ERR_QUERY; |
| 303 |
} |
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|
| 305 |
if (BytesReturned < sizeof(OPEN_FILE_INFORMATION)) { |
| 306 |
SetLastError (ERROR_INSUFFICIENT_BUFFER); |
| 307 |
print_lasterr (&VolumeName[4]); |
| 308 |
return CDISK_ERR_QUERY; |
| 309 |
} |
| 310 |
|
| 311 |
if (size) |
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*size = ofi->FileSize; |
| 313 |
if (rdonly) |
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*rdonly = ofi->ReadOnly; |
| 315 |
|
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return 0; |
| 317 |
} |
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|
| 319 |
|
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POPEN_FILE_INFORMATION |
| 321 |
filedisk_init_info (int devnum, char drivelet, const char * file, |
| 322 |
int ro, int cd_img, unsigned long size) |
| 323 |
{ |
| 324 |
POPEN_FILE_INFORMATION pfi; |
| 325 |
char * p; |
| 326 |
|
| 327 |
pfi = (POPEN_FILE_INFORMATION) |
| 328 |
calloc (1, sizeof(OPEN_FILE_INFORMATION) + strlen (file) + 7); |
| 329 |
p = (char *)pfi->FileName; |
| 330 |
|
| 331 |
if (file[0] == '\\') { |
| 332 |
if (file[1] == '\\' && file[2] != '.') { |
| 333 |
/* \\server\share\path\filedisk.img */ |
| 334 |
strcpy(p, "\\??\\UNC"); |
| 335 |
strcat(p, file + 1); |
| 336 |
} |
| 337 |
else /* \Device\Harddisk0\Partition1\path\filedisk.img */ |
| 338 |
strcpy(p, file); |
| 339 |
} |
| 340 |
else { // c:\path\filedisk.img |
| 341 |
strcpy (p, "\\??\\"); |
| 342 |
strcat (p, file); |
| 343 |
} |
| 344 |
|
| 345 |
pfi->FileNameLength = (USHORT) strlen (p); |
| 346 |
pfi->ReadOnly = ro? TRUE : FALSE; |
| 347 |
if (cd_img) |
| 348 |
pfi->ReadOnly = TRUE; |
| 349 |
if (size) |
| 350 |
pfi->FileSize.QuadPart = size * 1024; |
| 351 |
return pfi; |
| 352 |
} |
| 353 |
|
| 354 |
|
| 355 |
void |
| 356 |
filedisk_free_info (POPEN_FILE_INFORMATION pfi) |
| 357 |
{ |
| 358 |
if (!pfi) |
| 359 |
return; |
| 360 |
free (pfi); |
| 361 |
} |
| 362 |
|
| 363 |
|
| 364 |
LRESULT CALLBACK |
| 365 |
def_window_proc (HWND hwnd, UINT msg, WPARAM w, LPARAM l) |
| 366 |
{ |
| 367 |
COPYDATASTRUCT * cds; |
| 368 |
|
| 369 |
switch (msg) { |
| 370 |
case WM_DESTROY: |
| 371 |
PostQuitMessage (0); |
| 372 |
break; |
| 373 |
|
| 374 |
case WM_COPYDATA: |
| 375 |
cds = (COPYDATASTRUCT *)l; |
| 376 |
if (!cds || cds->cbData == 0) |
| 377 |
break; |
| 378 |
memcpy ((private_ofi_s *)&ofi, cds->lpData, cds->cbData); |
| 379 |
DestroyWindow (hwnd); |
| 380 |
break; |
| 381 |
} |
| 382 |
return DefWindowProc (hwnd, msg, w, l); |
| 383 |
} |
| 384 |
|
| 385 |
|
| 386 |
int WINAPI |
| 387 |
WinMain (HINSTANCE h, HINSTANCE hp, LPSTR cl, int show) |
| 388 |
{ |
| 389 |
POPEN_FILE_INFORMATION pfi; |
| 390 |
WNDCLASS wc = {0, def_window_proc, 0, 0, h, 0, 0, 0, 0, PGM_NAME}; |
| 391 |
HWND hwnd; |
| 392 |
MSG msg; |
| 393 |
int rc; |
| 394 |
|
| 395 |
wait_ev = CreateEvent (NULL, FALSE, FALSE, "cryptdisksrv.wait"); |
| 396 |
if (!wait_ev) { |
| 397 |
MessageBox (NULL, "Could not create wait event.", "CryptdiskSrv", |
| 398 |
MB_ICONERROR|MB_OK); |
| 399 |
return 0; |
| 400 |
} |
| 401 |
|
| 402 |
rc = RegisterClass (&wc); |
| 403 |
if (rc == FALSE) { |
| 404 |
MessageBox (NULL, "Could not register window class", "CryptdiskSrv", |
| 405 |
MB_ICONERROR|MB_OK); |
| 406 |
CloseHandle (wait_ev); |
| 407 |
return 0; |
| 408 |
} |
| 409 |
|
| 410 |
hwnd = CreateWindow (PGM_NAME, |
| 411 |
PGM_NAME, |
| 412 |
0, 0, 0, 0, 0, |
| 413 |
NULL, |
| 414 |
NULL, |
| 415 |
h, |
| 416 |
NULL); |
| 417 |
if (hwnd == NULL) { |
| 418 |
MessageBox (NULL, "Could not create window", "CryptdiskSrv", |
| 419 |
MB_ICONERROR|MB_OK); |
| 420 |
CloseHandle (wait_ev); |
| 421 |
return 0; |
| 422 |
} |
| 423 |
|
| 424 |
UpdateWindow (hwnd); |
| 425 |
while (GetMessage (&msg, hwnd, 0, 0)) { |
| 426 |
TranslateMessage (&msg); |
| 427 |
DispatchMessage (&msg); |
| 428 |
} |
| 429 |
|
| 430 |
{ |
| 431 |
FILE * logf; |
| 432 |
|
| 433 |
logf = fopen ("cryptdisk.log", "a+b"); |
| 434 |
if (logf) { |
| 435 |
fprintf (logf, "cmd=%d devnum=%d drive=%c name=%s len=%d size=%d forced=%d\r\n", |
| 436 |
ofi.cmd, ofi.devnum, ofi.drvlet, ofi.fname, ofi.flen, |
| 437 |
ofi.filesize, ofi.forced); |
| 438 |
fclose (logf); |
| 439 |
} |
| 440 |
} |
| 441 |
|
| 442 |
SetEvent (wait_ev); |
| 443 |
switch (ofi.cmd) { |
| 444 |
case CMD_NEW: |
| 445 |
case CMD_MOUNT: |
| 446 |
pfi = filedisk_init_info (ofi.devnum, ofi.drvlet, |
| 447 |
(const char *)ofi.fname, |
| 448 |
0, 0, ofi.filesize.LowPart); |
| 449 |
rc = filedisk_mount (ofi.devnum, pfi, ofi.drvlet, FALSE); |
| 450 |
filedisk_free_info (pfi); |
| 451 |
break; |
| 452 |
|
| 453 |
case CMD_UMOUNT: |
| 454 |
rc = filedisk_unmount (ofi.drvlet, ofi.forced); |
| 455 |
break; |
| 456 |
|
| 457 |
case CMD_UMOUNT2: |
| 458 |
rc = filedisk_unmount (0, 0); |
| 459 |
break; |
| 460 |
} |
| 461 |
ResetEvent (wait_ev); |
| 462 |
CloseHandle (wait_ev); |
| 463 |
return rc; |
| 464 |
} |
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