VeraCrypt
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path: root/src/Common/libzip/zip_file_add.c
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/*
  zip_file_add.c -- add file via callback function
  Copyright (C) 1999-2014 Dieter Baron and Thomas Klausner

  This file is part of libzip, a library to manipulate ZIP archives.
  The authors can be contacted at <libzip@nih.at>

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions
  are met:
  1. Redistributions of source code must retain the above copyright
     notice, this list of conditions and the following disclaimer.
  2. Redistributions in binary form must reproduce the above copyright
     notice, this list of conditions and the following disclaimer in
     the documentation and/or other materials provided with the
     distribution.
  3. The names of the authors may not be used to endorse or promote
     products derived from this software without specific prior
     written permission.

  THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS
  OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
  DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
  IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
  OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
  IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/


#include "zipint.h"

/*
  NOTE: Return type is signed so we can return -1 on error.
	The index can not be larger than ZIP_INT64_MAX since the size
	of the central directory cannot be larger than
	ZIP_UINT64_MAX, and each entry is larger than 2 bytes.
*/

ZIP_EXTERN zip_int64_t
zip_file_add(zip_t *za, const char *name, zip_source_t *source, zip_flags_t flags) {
    if (name == NULL || source == NULL) {
	zip_error_set(&za->error, ZIP_ER_INVAL, 0);
	return -1;
    }

    return _zip_file_replace(za, ZIP_UINT64_MAX, name, source, flags);
}
334' href='#n334'>334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443
/*
 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) 2003-2010 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 "Crypto.h"
#include "Volumes.h"
#include "Password.h"
#include "Dlgcode.h"
#include "Language.h"
#include "Pkcs5.h"
#include "Endian.h"
#include "Random.h"

#include <io.h>

void VerifyPasswordAndUpdate (HWND hwndDlg, HWND hButton, HWND hPassword,
			 HWND hVerify, unsigned char *szPassword,
			 char *szVerify,
			 BOOL keyFilesEnabled)
{
	char szTmp1[MAX_PASSWORD + 1];
	char szTmp2[MAX_PASSWORD + 1];
	int k = GetWindowTextLength (hPassword);
	BOOL bEnable = FALSE;

	UNREFERENCED_PARAMETER (hwndDlg);		/* Remove warning */

	GetWindowText (hPassword, szTmp1, sizeof (szTmp1));
	GetWindowText (hVerify, szTmp2, sizeof (szTmp2));

	if (strcmp (szTmp1, szTmp2) != 0)
		bEnable = FALSE;
	else
	{
		if (k >= MIN_PASSWORD || keyFilesEnabled)
			bEnable = TRUE;
		else
			bEnable = FALSE;
	}

	if (szPassword != NULL)
		memcpy (szPassword, szTmp1, sizeof (szTmp1));

	if (szVerify != NULL)
		memcpy (szVerify, szTmp2, sizeof (szTmp2));

	burn (szTmp1, sizeof (szTmp1));
	burn (szTmp2, sizeof (szTmp2));

	EnableWindow (hButton, bEnable);
}


BOOL CheckPasswordCharEncoding (HWND hPassword, Password *ptrPw)
{
	int i, len;
	
	if (hPassword == NULL)
	{
		if (ptrPw)
		{
			unsigned char *pw;
			len = ptrPw->Length;
			pw = (unsigned char *) ptrPw->Text;

			for (i = 0; i < len; i++)
			{
				if (pw[i] >= 0x7f || pw[i] < 0x20)	// A non-ASCII or non-printable character?
					return FALSE;
			}
		}
		else
			return FALSE;
	}
	else
	{
		wchar_t s[MAX_PASSWORD + 1];
		len = GetWindowTextLength (hPassword);

		if (len > MAX_PASSWORD)
			return FALSE; 

		GetWindowTextW (hPassword, s, sizeof (s) / sizeof (wchar_t));

		for (i = 0; i < len; i++)
		{
			if (s[i] >= 0x7f || s[i] < 0x20)	// A non-ASCII or non-printable character?
				break;
		}

		burn (s, sizeof(s));

		if (i < len)
			return FALSE; 
	}

	return TRUE;
}


BOOL CheckPasswordLength (HWND hwndDlg, HWND hwndItem)
{
	if (GetWindowTextLength (hwndItem) < PASSWORD_LEN_WARNING)
	{
#ifndef _DEBUG
		if (MessageBoxW (hwndDlg, GetString ("PASSWORD_LENGTH_WARNING"), lpszTitle, MB_YESNO|MB_ICONWARNING|MB_DEFBUTTON2) != IDYES)
			return FALSE;
#endif
	}
	return TRUE;
}

int ChangePwd (const char *lpszVolume, Password *oldPassword, int old_pkcs5, BOOL truecryptMode, Password *newPassword, int pkcs5, int wipePassCount, HWND hwndDlg)
{
	int nDosLinkCreated = 1, nStatus = ERR_OS_ERROR;
	char szDiskFile[TC_MAX_PATH], szCFDevice[TC_MAX_PATH];
	char szDosDevice[TC_MAX_PATH];
	char buffer[TC_VOLUME_HEADER_EFFECTIVE_SIZE];
	PCRYPTO_INFO cryptoInfo = NULL, ci = NULL;
	void *dev = INVALID_HANDLE_VALUE;
	DWORD dwError;
	DWORD bytesRead;
	BOOL bDevice;
	unsigned __int64 hostSize = 0;
	int volumeType;
	int wipePass;
	FILETIME ftCreationTime;
	FILETIME ftLastWriteTime;
	FILETIME ftLastAccessTime;
	BOOL bTimeStampValid = FALSE;
	LARGE_INTEGER headerOffset;
	BOOL backupHeader;
	DISK_GEOMETRY driveInfo;

	if (oldPassword->Length == 0 || newPassword->Length == 0) return -1;

	if ((wipePassCount <= 0) || (truecryptMode && (old_pkcs5 == SHA256)))
	{
      nStatus = ERR_PARAMETER_INCORRECT;
      handleError (hwndDlg, nStatus);
      return nStatus;
	}

   if (!lpszVolume)
   {
      nStatus = ERR_OUTOFMEMORY;
      handleError (hwndDlg, nStatus);
      return nStatus;
   }

	WaitCursor ();

	CreateFullVolumePath (szDiskFile, sizeof(szDiskFile), lpszVolume, &bDevice);

	if (bDevice == FALSE)
	{
		strcpy (szCFDevice, szDiskFile);
	}
	else
	{
		nDosLinkCreated = FakeDosNameForDevice (szDiskFile, szDosDevice, sizeof(szDosDevice), szCFDevice, sizeof(szCFDevice),FALSE);
		
		if (nDosLinkCreated != 0)
			goto error;
	}

	dev = CreateFile (szCFDevice, GENERIC_READ | GENERIC_WRITE, FILE_SHARE_READ | FILE_SHARE_WRITE, NULL, OPEN_EXISTING, 0, NULL);

	if (dev == INVALID_HANDLE_VALUE) 
		goto error;

	if (bDevice)
	{
		/* This is necessary to determine the hidden volume header offset */

		if (dev == INVALID_HANDLE_VALUE)
		{
			goto error;
		}
		else
		{
			PARTITION_INFORMATION diskInfo;
			DWORD dwResult;
			BOOL bResult;

			bResult = DeviceIoControl (dev, IOCTL_DISK_GET_DRIVE_GEOMETRY, NULL, 0,
				&driveInfo, sizeof (driveInfo), &dwResult, NULL);

			if (!bResult)
				goto error;

			bResult = GetPartitionInfo (lpszVolume, &diskInfo);

			if (bResult)
			{
				hostSize = diskInfo.PartitionLength.QuadPart;
			}
			else
			{
				hostSize = driveInfo.Cylinders.QuadPart * driveInfo.BytesPerSector *
					driveInfo.SectorsPerTrack * driveInfo.TracksPerCylinder;
			}

			if (hostSize == 0)
			{
				nStatus = ERR_VOL_SIZE_WRONG;
				goto error;
			}
		}
	}
	else
	{
		LARGE_INTEGER fileSize;
		if (!GetFileSizeEx (dev, &fileSize))
		{
			nStatus = ERR_OS_ERROR;
			goto error;
		}

		hostSize = fileSize.QuadPart;
	}

	if (Randinit ())
	{
		if (CryptoAPILastError == ERROR_SUCCESS)
			nStatus = ERR_RAND_INIT_FAILED;
		else
			nStatus = ERR_CAPI_INIT_FAILED;
		goto error;
	}

	SetRandomPoolEnrichedByUserStatus (FALSE); /* force the display of the random enriching dialog */

	if (!bDevice && bPreserveTimestamp)
	{
		if (GetFileTime ((HANDLE) dev, &ftCreationTime, &ftLastAccessTime, &ftLastWriteTime) == 0)
			bTimeStampValid = FALSE;
		else
			bTimeStampValid = TRUE;
	}

	for (volumeType = TC_VOLUME_TYPE_NORMAL; volumeType < TC_VOLUME_TYPE_COUNT; volumeType++)
	{
		// Seek the volume header
		switch (volumeType)
		{
		case TC_VOLUME_TYPE_NORMAL:
			headerOffset.QuadPart = TC_VOLUME_HEADER_OFFSET;
			break;

		case TC_VOLUME_TYPE_HIDDEN:
			if (TC_HIDDEN_VOLUME_HEADER_OFFSET + TC_VOLUME_HEADER_SIZE > hostSize)
				continue;

			headerOffset.QuadPart = TC_HIDDEN_VOLUME_HEADER_OFFSET;
			break;

		}

		if (!SetFilePointerEx ((HANDLE) dev, headerOffset, NULL, FILE_BEGIN))
		{
			nStatus = ERR_OS_ERROR;
			goto error;
		}

		/* Read in volume header */
		if (!ReadEffectiveVolumeHeader (bDevice, dev, buffer, &bytesRead))
		{
			nStatus = ERR_OS_ERROR;
			goto error;
		}

		if (bytesRead != sizeof (buffer))
		{
			// Windows may report EOF when reading sectors from the last cluster of a device formatted as NTFS 
			memset (buffer, 0, sizeof (buffer));
		}

		/* Try to decrypt the header */

		nStatus = ReadVolumeHeader (FALSE, buffer, oldPassword, old_pkcs5, truecryptMode, &cryptoInfo, NULL);
		if (nStatus == ERR_CIPHER_INIT_WEAK_KEY)
			nStatus = 0;	// We can ignore this error here

		if (nStatus == ERR_PASSWORD_WRONG)
		{
			continue;		// Try next volume type
		}
		else if (nStatus != 0)
		{
			cryptoInfo = NULL;
			goto error;
		}
		else 
			break;
	}

	if (nStatus != 0)
	{
		cryptoInfo = NULL;
		goto error;
	}

	if (cryptoInfo->HeaderFlags & TC_HEADER_FLAG_ENCRYPTED_SYSTEM)
	{
		nStatus = ERR_SYS_HIDVOL_HEAD_REENC_MODE_WRONG;
		goto error;
	}

	// Change the PKCS-5 PRF if requested by user
	if (pkcs5 != 0)
		cryptoInfo->pkcs5 = pkcs5;

	RandSetHashFunction (cryptoInfo->pkcs5);

	NormalCursor();
	UserEnrichRandomPool (hwndDlg);
	EnableElevatedCursorChange (hwndDlg);
	WaitCursor();

	/* Re-encrypt the volume header */ 
	backupHeader = FALSE;

	while (TRUE)
	{
		/* The header will be re-encrypted wipePassCount times to prevent adversaries from using 
		techniques such as magnetic force microscopy or magnetic force scanning tunnelling microscopy
		to recover the overwritten header. According to Peter Gutmann, data should be overwritten 22
		times (ideally, 35 times) using non-random patterns and pseudorandom data. However, as users might
		impatiently interupt the process (etc.) we will not use the Gutmann's patterns but will write the
		valid re-encrypted header, i.e. pseudorandom data, and there will be many more passes than Guttman
		recommends. During each pass we will write a valid working header. Each pass will use the same master
		key, and also the same header key, secondary key (XTS), etc., derived from the new password. The only
		item that will be different for each pass will be the salt. This is sufficient to cause each "version"
		of the header to differ substantially and in a random manner from the versions written during the
		other passes. */

		for (wipePass = 0; wipePass < wipePassCount; wipePass++)
		{
			// Prepare new volume header
			nStatus = CreateVolumeHeaderInMemory (hwndDlg, FALSE,
				buffer,
				cryptoInfo->ea,
				cryptoInfo->mode,
				newPassword,
				cryptoInfo->pkcs5,
				cryptoInfo->master_keydata,
				&ci,
				cryptoInfo->VolumeSize.Value,
				(volumeType == TC_VOLUME_TYPE_HIDDEN) ? cryptoInfo->hiddenVolumeSize : 0,
				cryptoInfo->EncryptedAreaStart.Value,
				cryptoInfo->EncryptedAreaLength.Value,
				truecryptMode? 0 : cryptoInfo->RequiredProgramVersion,
				cryptoInfo->HeaderFlags,
				cryptoInfo->SectorSize,
				wipePass < wipePassCount - 1);

			if (ci != NULL)
				crypto_close (ci);

			if (nStatus != 0)
				goto error;

			if (!SetFilePointerEx ((HANDLE) dev, headerOffset, NULL, FILE_BEGIN))
			{
				nStatus = ERR_OS_ERROR;
				goto error;
			}

			if (!WriteEffectiveVolumeHeader (bDevice, dev, buffer))
			{
				nStatus = ERR_OS_ERROR;
				goto error;
			}

			if (bDevice
				&& !cryptoInfo->LegacyVolume
				&& !cryptoInfo->hiddenVolume
				&& cryptoInfo->HeaderVersion == 4
				&& (cryptoInfo->HeaderFlags & TC_HEADER_FLAG_NONSYS_INPLACE_ENC) != 0
				&& (cryptoInfo->HeaderFlags & ~TC_HEADER_FLAG_NONSYS_INPLACE_ENC) == 0)
			{
				nStatus = WriteRandomDataToReservedHeaderAreas (hwndDlg, dev, cryptoInfo, cryptoInfo->VolumeSize.Value, !backupHeader, backupHeader);
				if (nStatus != ERR_SUCCESS)
					goto error;
			}

			FlushFileBuffers (dev);
		}

		if (backupHeader || cryptoInfo->LegacyVolume)
			break;
			
		backupHeader = TRUE;
		headerOffset.QuadPart += hostSize - TC_VOLUME_HEADER_GROUP_SIZE;
	}

	/* Password successfully changed */
	nStatus = 0;

error:
	dwError = GetLastError ();

	burn (buffer, sizeof (buffer));

	if (cryptoInfo != NULL)
		crypto_close (cryptoInfo);

	if (bTimeStampValid)
		SetFileTime (dev, &ftCreationTime, &ftLastAccessTime, &ftLastWriteTime);

	if (dev != INVALID_HANDLE_VALUE)
		CloseHandle ((HANDLE) dev);

	if (nDosLinkCreated == 0)
		RemoveFakeDosName (szDiskFile, szDosDevice);

	RandStop (FALSE);
	NormalCursor ();

	SetLastError (dwError);

	if (nStatus == ERR_OS_ERROR && dwError == ERROR_ACCESS_DENIED
		&& bDevice
		&& !UacElevated
		&& IsUacSupported ())
		return nStatus;

	if (nStatus != 0)
		handleError (hwndDlg, nStatus);

	return nStatus;
}