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/*
** blkcalc
** The Sleuth Kit
**
** Calculates the corresponding block number between 'blkls' and 'dd' images
** when given an 'blkls' block number, it determines the block number it
** had in a 'dd' image. When given a 'dd' image, it determines the
** value it would have in a 'blkls' image (if the block is unallocated)
**
** Brian Carrier [carrier <at> sleuthkit [dot] org]
** Copyright (c) 2006-2011 Brian Carrier, Basis Technology. All Rights reserved
** Copyright (c) 2003-2005 Brian Carrier. All Rights reserved
**
** TASK
** Copyright (c) 2002 Brian Carrier, @stake Inc. All Rights reserved
**
** TCTUTILs
** Copyright (c) 2001 Brian Carrier. All rights reserved
**
**
** This software is distributed under the Common Public License 1.0
**
*/
#include "tsk/tsk_tools_i.h"
#include <locale.h>
static TSK_TCHAR *progname;
static void
usage()
{
TFPRINTF(stderr,
_TSK_T
("usage: %s [-dsu unit_addr] [-vV] [-f fstype] [-i imgtype] [-b dev_sector_size] [-o imgoffset] [-P pooltype] [-B pool_volume_block] image [images]\n"),
progname);
tsk_fprintf(stderr, "Slowly calculates the opposite block number\n");
tsk_fprintf(stderr, "\tOne of the following must be given:\n");
tsk_fprintf(stderr,
"\t -d: The given address is from a 'dd' image \n");
tsk_fprintf(stderr,
"\t -s: The given address is from a 'blkls -s' (slack) image\n");
tsk_fprintf(stderr,
"\t -u: The given address is from a 'blkls' (unallocated) image\n");
tsk_fprintf(stderr,
"\t-f fstype: The file system type (use '-f list' for supported types)\n");
tsk_fprintf(stderr,
"\t-i imgtype: The format of the image file (use '-i list' for supported types)\n");
tsk_fprintf(stderr,
"\t-b dev_sector_size: The size (in bytes) of the device sectors\n");
tsk_fprintf(stderr,
"\t-o imgoffset: The offset of the file system in the image (in sectors)\n");
tsk_fprintf(stderr,
"\t-P pooltype: Pool container type (use '-P list' for supported types)\n");
tsk_fprintf(stderr,
"\t-B pool_volume_block: Starting block (for pool volumes only)\n");
tsk_fprintf(stderr, "\t-v: verbose output to stderr\n");
tsk_fprintf(stderr, "\t-V: Print version\n");
exit(1);
}
int
main(int argc, char **argv1)
{
TSK_IMG_TYPE_ENUM imgtype = TSK_IMG_TYPE_DETECT;
TSK_IMG_INFO *img;
TSK_OFF_T imgaddr = 0;
TSK_FS_TYPE_ENUM fstype = TSK_FS_TYPE_DETECT;
TSK_FS_INFO *fs;
TSK_POOL_TYPE_ENUM pooltype = TSK_POOL_TYPE_DETECT;
TSK_OFF_T pvol_block = 0;
const char * password = "";
int ch;
TSK_TCHAR *cp;
uint8_t type = 0;
int set = 0;
TSK_DADDR_T count = 0;
TSK_TCHAR **argv;
unsigned int ssize = 0;
#ifdef TSK_WIN32
// On Windows, get the wide arguments (mingw doesn't support wmain)
argv = CommandLineToArgvW(GetCommandLineW(), &argc);
if (argv == NULL) {
fprintf(stderr, "Error getting wide arguments\n");
exit(1);
}
#else
argv = (TSK_TCHAR **) argv1;
#endif
progname = argv[0];
setlocale(LC_ALL, "");
while ((ch = GETOPT(argc, argv, _TSK_T("b:B:d:f:i:o:P:s:u:vV"))) > 0) {
switch (ch) {
case _TSK_T('?'):
default:
TFPRINTF(stderr, _TSK_T("Invalid argument: %s\n"),
argv[OPTIND]);
usage();
case _TSK_T('b'):
ssize = (unsigned int) TSTRTOUL(OPTARG, &cp, 0);
if (*cp || *cp == *OPTARG || ssize < 1) {
TFPRINTF(stderr,
_TSK_T
("invalid argument: sector size must be positive: %s\n"),
OPTARG);
usage();
}
break;
case _TSK_T('d'):
type |= TSK_FS_BLKCALC_DD;
count = TSTRTOULL(OPTARG, &cp, 0);
if (*cp || *cp == *OPTARG) {
TFPRINTF(stderr, _TSK_T("Invalid address: %s\n"), OPTARG);
usage();
}
set = 1;
break;
case _TSK_T('f'):
if (TSTRCMP(OPTARG, _TSK_T("list")) == 0) {
tsk_fs_type_print(stderr);
exit(1);
}
fstype = tsk_fs_type_toid(OPTARG);
if (fstype == TSK_FS_TYPE_UNSUPP) {
TFPRINTF(stderr,
_TSK_T("Unsupported file system type: %s\n"), OPTARG);
usage();
}
break;
case _TSK_T('i'):
if (TSTRCMP(OPTARG, _TSK_T("list")) == 0) {
tsk_img_type_print(stderr);
exit(1);
}
imgtype = tsk_img_type_toid(OPTARG);
if (imgtype == TSK_IMG_TYPE_UNSUPP) {
TFPRINTF(stderr, _TSK_T("Unsupported image type: %s\n"),
OPTARG);
usage();
}
break;
case _TSK_T('o'):
if ((imgaddr = tsk_parse_offset(OPTARG)) == -1) {
tsk_error_print(stderr);
exit(1);
}
break;
case _TSK_T('P'):
if (TSTRCMP(OPTARG, _TSK_T("list")) == 0) {
tsk_pool_type_print(stderr);
exit(1);
}
pooltype = tsk_pool_type_toid(OPTARG);
if (pooltype == TSK_POOL_TYPE_UNSUPP) {
TFPRINTF(stderr,
_TSK_T("Unsupported pool container type: %s\n"), OPTARG);
usage();
}
break;
case _TSK_T('B'):
if ((pvol_block = tsk_parse_offset(OPTARG)) == -1) {
tsk_error_print(stderr);
exit(1);
}
break;
case _TSK_T('s'):
type |= TSK_FS_BLKCALC_SLACK;
count = TSTRTOULL(OPTARG, &cp, 0);
if (*cp || *cp == *OPTARG) {
TFPRINTF(stderr, _TSK_T("Invalid address: %s\n"), OPTARG);
usage();
}
set = 1;
break;
case _TSK_T('u'):
type |= TSK_FS_BLKCALC_BLKLS;
count = TSTRTOULL(OPTARG, &cp, 0);
if (*cp || *cp == *OPTARG) {
TFPRINTF(stderr, _TSK_T("Invalid address: %s\n"), OPTARG);
usage();
}
set = 1;
break;
case _TSK_T('v'):
tsk_verbose++;
break;
case _TSK_T('V'):
tsk_version_print(stdout);
exit(0);
}
}
/* We need at least one more argument */
if (OPTIND == argc) {
tsk_fprintf(stderr, "Missing image name\n");
usage();
}
if ((!type) || (set == 0)) {
tsk_fprintf(stderr, "Calculation type not given (-u, -d, -s)\n");
usage();
}
if ((type & TSK_FS_BLKCALC_DD) && (type & TSK_FS_BLKCALC_BLKLS)
&& (type & TSK_FS_BLKCALC_SLACK)) {
tsk_fprintf(stderr, "Only one block type can be given\n");
usage();
}
if ((img =
tsk_img_open(argc - OPTIND, &argv[OPTIND], imgtype,
ssize)) == NULL) {
tsk_error_print(stderr);
exit(1);
}
if ((imgaddr * img->sector_size) >= img->size) {
tsk_fprintf(stderr,
"Sector offset supplied is larger than disk image (maximum: %"
PRIu64 ")\n", img->size / img->sector_size);
exit(1);
}
if (pvol_block == 0) {
if ((fs = tsk_fs_open_img_decrypt(img, imgaddr * img->sector_size,
fstype, password)) == NULL) {
tsk_error_print(stderr);
if (tsk_error_get_errno() == TSK_ERR_FS_UNSUPTYPE)
tsk_fs_type_print(stderr);
tsk_img_close(img);
exit(1);
}
}
else {
const TSK_POOL_INFO *pool = tsk_pool_open_img_sing(img, imgaddr * img->sector_size, pooltype);
if (pool == NULL) {
tsk_error_print(stderr);
if (tsk_error_get_errno() == TSK_ERR_FS_UNSUPTYPE)
tsk_pool_type_print(stderr);
tsk_img_close(img);
exit(1);
}
img = pool->get_img_info(pool, (TSK_DADDR_T)pvol_block);
if ((fs = tsk_fs_open_img_decrypt(img, imgaddr * img->sector_size, fstype, password)) == NULL) {
tsk_error_print(stderr);
if (tsk_error_get_errno() == TSK_ERR_FS_UNSUPTYPE)
tsk_fs_type_print(stderr);
tsk_img_close(img);
exit(1);
}
}
if (-1 == tsk_fs_blkcalc(fs, (TSK_FS_BLKCALC_FLAG_ENUM) type, count)) {
tsk_error_print(stderr);
tsk_fs_close(fs);
tsk_img_close(img);
exit(1);
}
tsk_fs_close(fs);
tsk_img_close(img);
exit(0);
}
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