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/*
* AUTHOR
* Stef Walter
*
* LICENSE
* This software is in the public domain.
*
* The software is provided "as is", without warranty of any kind,
* express or implied, including but not limited to the warranties
* of merchantability, fitness for a particular purpose, and
* noninfringement. In no event shall the author(s) be liable for any
* claim, damages, or other liability, whether in an action of
* contract, tort, or otherwise, arising from, out of, or in connection
* with the software or the use or other dealings in the software.
*
* SUPPORT
* Send bug reports to: <stef@memberwebs.com>
*/
#include "usuals.h"
#include "scrounge.h"
#include "compat.h"
#ifdef _WIN32
const char kPrintHelp[] = "\
usage: scrounge -l \n\
List all drive partition information. \n\
\n\
usage: scrounge [-d drive] [-m mftoffset] [-c clustersize] [-o outdir] start end \n\
Scrounge data from a partition \n\
-c Cluster size (in sectors, default of 8) \n\
-d Drive number \n\
-k Number of sectors to skip when in mft not specified. \n\
-m Offset to mft (in sectors) \n\
-o Directory to put scrounged files in \n\
start First sector of partition \n\
end Last sector of partition \n\
\n\
";
#else /* Not WIN32 */
const char kPrintHelp[] = "\
usage: scrounge -l disk \n\
List all drive partition information. \n\
\n\
usage: scrounge [-m mftoffset] [-c clustersize] [-o outdir] disk start end \n\
Scrounge data from a partition \n\
-c Cluster size (in sectors, default of 8) \n\
-k Number of sectors to skip when in mft not specified. \n\
-m Offset to mft (in sectors) \n\
-o Directory to put scrounged files in \n\
disk The raw disk partitios (ie: /dev/hda) \n\
start First sector of partition \n\
end Last sector of partition \n\
\n\
";
#endif
#define MODE_SCROUNGE 1
#define MODE_LIST 2
#define MODE_SEARCH 3
/* Forward decls */
void usage();
#ifdef _DEBUG
bool g_verifyMode = false;
#endif
int main(int argc, char* argv[])
{
int ch = 0;
int temp = 0;
int mode = 0;
int raw = 0;
uint64 skip = 0;
unsigned long long ull;
partitioninfo pi;
char driveName[MAX_PATH + 1];
char *end;
#ifdef _WIN32
int drive = 0;
#endif
memset(&pi, 0, sizeof(pi));
/* TODO: We need to be able to autodetect the cluster size */
pi.cluster = 8;
#ifdef _WIN32
while((ch = getopt(argc, argv, "c:d:hlm:o:sv")) != -1)
#else
while((ch = getopt(argc, argv, "c:hlm:o:sv")) != -1)
#endif
{
switch(ch)
{
/* cluster size */
case 'c':
{
temp = atoi(optarg);
if(temp <= 0 || temp > 128)
errx(2, "invalid cluster size (must be between 1 and 128)");
pi.cluster = temp;
mode = MODE_SCROUNGE;
}
break;
#ifdef _WIN32
/* drive number */
case 'd':
{
temp = atoi(optarg);
if(temp < 0 || temp > 128)
errx(2, "invalid drive number (must be between 0 and 128)");
drive = temp;
}
break;
#endif
/* skip sectors */
case 'k':
{
ull = strtoull(optarg, &end, 10);
if(*end != 0)
errx(2, "invalid skip number (must be positive)");
skip = ull;
}
break;
/* list mode */
case 'l':
{
if(mode == MODE_SCROUNGE)
errx(2, "invalid -l argument in scrounge mode");
mode = MODE_LIST;
}
break;
/* mft offset */
case 'm':
{
ull = strtoull(optarg, &end, 10);
if(*end != 0)
errx(2, "invalid mft offset (must be positive)");
pi.mft = ull;
mode = MODE_SCROUNGE;
}
break;
/* output directory */
case 'o':
if(chdir(optarg) == -1)
err(2, "couldn't change to output directory");
break;
/* search mode */
case 's':
{
if(mode == MODE_SCROUNGE)
errx(2, "invalid -s argument in scrounge mode");
mode = MODE_SEARCH;
}
break;
#ifdef _DEBUG
case 'v':
g_verifyMode = true;
break;
#endif
/* help mode */
case '?':
case 'h':
default:
usage();
break;
};
if(mode != MODE_SCROUNGE && mode != 0)
break;
}
argc -= optind;
argv += optind;
#ifdef _WIN32
/* Under windows we format the drive number */
makeDriveName(driveName, drive);
#else
/* Now when not under Windows, it's the drive name */
if(argc < 1)
errx(2, "must specify drive name");
strncpy(driveName, argv[0], MAX_PATH);
driveName[MAX_PATH] = 0;
argv++;
argc--;
#endif
if(mode == MODE_SCROUNGE || mode == 0)
{
/* Get the sectors */
if(argc < 2)
errx(2, "must specify start and end sector of partition");
if(argc > 2)
warnx("ignoring extra arguments");
ull = strtoull(argv[0], &end, 10);
if(*end != 0)
errx(2, "invalid start sector (must be positive)");
pi.first = ull;
ull = strtoull(argv[1], &end, 10);
if(*end != 0 || ull <= pi.first)
errx(2, "invalid end sector (must be positive and greater than first)");
pi.end = ull;
/* Open the device */
pi.device = open(driveName, O_BINARY | O_RDONLY | OPEN_LARGE_OPTS);
if(pi.device == -1)
err(1, "couldn't open drive: %s", driveName);
/* Use mft type search */
if(pi.mft != 0)
{
scroungeUsingMFT(&pi);
}
/* Otherwise it's a raw search */
else
{
warnx("Scrounging via raw search. Directory info will be discarded.");
scroungeUsingRaw(&pi, skip);
}
}
else
{
if(argc > 0)
warnx("ignoring extra arguments");
/* List partition and drive info */
if(mode == MODE_LIST)
#ifdef _WIN32
scroungeList();
#else
scroungeListDrive(driveName);
#endif
/* Search for NTFS partitions */
if(mode == MODE_SEARCH)
scroungeSearch(&pi);
}
return 0;
}
void usage()
{
fprintf(stderr, "%s", kPrintHelp);
exit(2);
}
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