NAME¶
ewfacquirestream —
acquires data in the
EWF format from stdin
SYNOPSIS¶
| ewfacquirestream |
[-A
codepage]
[-b
amount_of_sectors]
[-B
amount_of_bytes]
[-c
compression_type]
[-C
case_number]
[-d
digest_type]
[-D
description]
[-e
examiner_name]
[-E
evidence_number]
[-f
format]
[-l
log_filename]
[-m
media_type]
[-M
media_flags]
[-N notes]
[-o
offset]
[-p
process_buffer_size]
[-S
segment_file_size]
[-t
target]
[-2
secondary_target]
[-hqsvVw] |
DESCRIPTION¶
ewfacquirestream is a utility to acquire media data from stdin
and store it in EWF format (Expert Witness Format).
ewfacquirestream acquires media data in a format equivalent
to EnCase and FTK imager, including meta data. Under Linux, FreeBSD, NetBSD,
OpenBSD, MacOS-X/Darwin
ewfacquirestream is part of the
libewf
package.
libewf is a library to support the Expert Witness
Compression Format (EWF).
libewf supports both the SMART
format (EWF-S01) and the EnCase format (EWF-E01).
libewf
currently does not support the Logical Volume format (EWF-L01). EWF-X is an
expirimental format intended for testing purposes to enhance the EWF format.
libewf allows you to read and write media data in the EWF
format.
The options are as follows:
- -A
codepage
- the codepage of header section, options: ascii (default),
windows-874, windows-1250, windows-1251, windows-1252, windows-1253,
windows-1254, windows-1255, windows-1256, windows-1257, windows-1258
- -b
amount_of_sectors
- the amount of sectors to read at once (per chunk), options:
64 (default), 128, 256, 512, 1024, 2048, 4096, 8192, 16384 or 32768
- -B
amount_of_bytes
- the amount of bytes to acquire
- -c
compression_type
- the compression type, options: none (default), empty-block,
fast, best
- -C
case_number
- the case number (default is case_number)
- -d
digest_type
- calculate additional digest (hash) types besides md5,
options: sha1
- -D
description
- the description (default is description)
- -e
examiner_name
- the examiner name (default is examiner_name)
- -E
evidence_number
- the evidence number (default is evidence_number)
- -f
format
- the EWF file format to write to, options: ftk, encase2,
encase3, encase4, encase5, encase6 (default), linen5, linen6, ewfx.
libewf does not support streamed writes for other EWF
formats.
- -h
- shows this help
- -l
log_filename
- logs acquiry errors and the digest (hash) to the log
filename
- -m
media_type
- the media type, options: fixed (default), removable,
optical, memory
- -M
media_flags
- the media flags, options: logical, physical (default)
- -N
notes
- the notes (default is notes)
- -o
offset
- the offset to start to acquire (default is 0)
- -p
process_buffer_size
- the process buffer size (default is the chunk size)
- -q
- quiet shows no status information
- -s
- swap byte pairs of the media data (from AB to BA) (use this
for big to little endian conversion and vice versa)
- -S
segment_file_size
- the segment file size in bytes (default is 1.4 GiB)
(minimum is 1.0 MiB, maximum is 7.9 EiB for encase6 format and 1.9 GiB for
other formats)
- -t
target
- the target file (without extension) to write to (default is
image)
- -v
- verbose output to stderr
- -V
- print version
- -w
- wipe sectors on read error (mimic EnCase like
behavior)
- -2
secondary_target
- the secondary target file (without extension) to write
to
ewfacquirestream will read from stding until it encounters a
read error. On read error it will stop no error information is stored in the
EWF file(s).
Empty block compression detects blocks of sectors with entirely the same byte
data and compresses them using the default compression level.
ENVIRONMENT¶
None
FILES¶
None
EXAMPLES¶
# ewfacquirestream -C 1 -D Floppy -E 1.1 -e 'John D.' -N 'Just a floppy in my system' -m removable -M physical -t floppy </dev/fd0
ewfacquirestream 20090229 (libewf 20090229, libuna 20090124, zlib 1.2.3, libcrypto 0.9.8g, libuuid)
Using the following acquiry parameters:
Image path and filename: floppy.E01
Case number: 1
Description: Floppy
Evidence number: 1.1
Examiner name: John D.
Notes: Just a floppy in my system
Media type: removable
Volume type: physical
Compression used: none
EWF file format: EnCase 5
Acquiry start offet: 0
Amount of bytes to acquire: 0 (until end of input)
Evidence segment file size: 1.4 GiB (1572864000 bytes)
Block size: 64 sectors
Error granularity: 64 sectors
Retries on read error: 2
Wipe sectors on read error: no
Acquiry started at: Sat Feb 28 11:32:41 2009
This could take a while.
Status: acquired 1.4 MiB (1474560 bytes)
in 1 second(s) with 1 MiB/s (1474560 bytes/second).
Acquiry completed at: Sat Feb 28 11:32:42 2009
Written: 1.4 MiB (1474560 bytes) in 1 second(s) with 1 MiB/s (1474560 bytes/second).
MD5 hash calculated over data: ae1ce8f5ac079d3ee93f97fe3792bda3
DIAGNOSTICS¶
Errors, verbose and debug output are printed to stderr when verbose output -v is
enabled. Verbose and debug output are only printed when enabled at
compilation.
BUGS¶
Please report bugs of any kind to <forensics@hoffmannbv.nl> or on the
project website:
http://libewf.sourceforge.net/
AUTHOR¶
These man pages were written by Joachim Metz.
COPYRIGHT¶
Copyright 2006-2009 Joachim Metz, Hoffmann Investigations
<forensics@hoffmannbv.nl> and contributors.
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
SEE ALSO¶
ewfacquire(1),
ewfexport(1),
ewfinfo(1),
ewfverify(1)
