/usr/bin/vinetto is in vinetto 0.6.0~alpha-1.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
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# -*- coding: UTF-8 -*-
"""
-----------------------------------------------------------------------------
Vinetto : a forensics tool to examine Thumbs.db files
Copyright (C) 2005, 2006 by Michel Roukine
This file is part of Vinetto.
Vinetto is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as published
by the Free Software Foundation; either version 2 of the License, or (at
your option) any later version.
Vinetto is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License along
with the vinetto package; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-----------------------------------------------------------------------------
"""
__revision__ = "$Revision: 56 $"
__version__ = "0.06"
__author__ = 'Michel Roukine'
import sys
import os
import StringIO
import md5
import vinreport
from optparse import OptionParser
from struct import unpack
from binascii import unhexlify
from time import ctime
from vinutils import addCatEntry, nbCatEnt, nbTNstr, TNfname, catIndxOutOfSeq, \
tnStreamOutOfSeq, addTNStream, extractStats
PPS_TYPES = ["undefined", "storage", "stream", "undefined", "undefined", "root"]
EOI = unhexlify('ffd9')
HEADER1 = unhexlify('0c00')
PIL = ""
def getargs():
"""Return arguments passed to vinetto on the command line. """
verstr = "%prog " + __version__ + " (r" + __revision__[11:-2] +")\n\n" +\
"Copyright (C) 2005-2006 Michel Roukine.\n" + \
"Vinetto is open source software," + \
" see http://vinetto.sourceforge.net/"
parser = OptionParser(usage="%prog [OPTIONS] [-o DIR] file", version=verstr)
parser.add_option("-o", dest="outputdir",
help="write thumbnails to DIR", metavar="DIR")
parser.set_defaults(htmlrep=False)
parser.add_option("-H", action="store_true", dest="htmlrep",
help="write html report to DIR")
opts, pargs = parser.parse_args()
if len(pargs) != 1:
parser.error("incorrect number of arguments")
if (opts.outputdir == None) and (opts.htmlrep == True):
parser.error("-H option requires -o with a directory name")
return (pargs[0], opts.outputdir, opts.htmlrep)
def conv2pytime (win32filetime):
"""Convert win32 timestamp to python time. """
SECS_BETWEEN_EPOCHS = 11644473600
SECS_TO_100NS = 10000000
if win32filetime == 0:
return 0
else:
return (win32filetime / SECS_TO_100NS) - SECS_BETWEEN_EPOCHS
def nextBlock (TDB, Table, indx):
"""Return next block. """
iFAT = indx / 128 # FAT block number to search in
iSECT = indx % 128 # SECTor to search in the FAT block
offst = Table [iFAT] * 512 + 0x200 + iSECT*4
return unpack("<l", TDB[offst:offst+4])[0]
# Beginning ...
tDBfname, outputdir, htmlrep = getargs()
# Testing file and DIR parameters
if not os.access(tDBfname, os.F_OK):
print >> sys.stderr, "Error: ", tDBfname, "does not exist"
sys.exit(1)
elif not os.path.isfile(tDBfname):
print >> sys.stderr, "Error: ", tDBfname, "not a file"
sys.exit(1)
elif not os.access(tDBfname, os.R_OK):
print >> sys.stderr, "Error: ", tDBfname, "not readable"
sys.exit(1)
# Opening Thumbs.db file
thumbsDB = open(tDBfname,"rb").read()
longueur = len(thumbsDB)
if (longueur % 512 ) != 0:
print >> sys.stderr, " ** Warning: length " + tDBfname + " : " \
+ str(longueur) + ", non multiple 512"
# Initializing extraction and optional html report
if outputdir != None :
if not os.path.exists(outputdir):
try :
os.mkdir(outputdir)
print 'Note: ', outputdir, ' was created'
except EnvironmentError, e:
print >> sys.stderr, "Error creating", outputdir
sys.exit(1)
elif not os.path.isdir(outputdir):
print >> sys.stderr, 'Error: ', outputdir, ' is not a directory'
sys.exit(1)
elif not os.access(outputdir, os.W_OK):
print >> sys.stderr, 'Error: ', outputdir, ' not writable'
sys.exit(1)
outputdir += "/"
try:
import Image
PIL = "imported"
except ImportError, e:
print >> sys.stderr, ""
print >> sys.stderr, " ** Warning: Cannot find \"Image\" module."
print >> sys.stderr, " Vinetto will only extract Type 2 thumbnails."
print >> sys.stderr, ""
header = open("/usr/share/vinetto/header","rb").read()
quantization = open("/usr/share/vinetto/quantization","rb").read()
huffman = open("/usr/share/vinetto/huffman","rb").read()
if htmlrep == True:
report = vinreport.HtRep(tDBfname, outputdir, __version__ + " (r" + \
__revision__[11:-2] +")")
md5tDB = md5.new(thumbsDB).hexdigest()
report.SetFileSection(longueur, md5tDB)
# -----------------------------------------------------------------------------
# Analyzing header block ...
if "\xd0\xcf\x11\xe0\xa1\xb1\x1a\xe1" != thumbsDB[0:8] :
print >> sys.stderr, " *** Error " + tDBfname + ": header signature error "
sys.exit(8)
nbFATblocks = unpack("<l", thumbsDB[0x2c:0x2c+4])[0]
REfirstBlock = unpack("<l", thumbsDB[0x30:0x30+4])[0] #Root directory 1st block
firstMiniFATblock = unpack("<l", thumbsDB[0x3c:0x3c+4])[0]
FATblocks = []
for i in range(nbFATblocks):
offset = 0x4c + i*4
FATblocks.append(unpack("<l", thumbsDB[offset:offset + 4])[0])
# -----------------------------------------------------------------------------
# Analyzing Root Entry directory ...
currentBlock = REfirstBlock
i = firstMiniFATblock
MiniFATblocks = []
while i != -2:
MiniFATblocks.append(i)
i = nextBlock (thumbsDB, FATblocks, i)
offset = 0x200 + currentBlock * 0x200
firstMiniFATstreamBlock = unpack("<l", thumbsDB[offset+0x74:offset+0x78])[0]
i = firstMiniFATstreamBlock
MiniFATstreamBlocks = []
while i != -2:
MiniFATstreamBlocks.append(i)
i = nextBlock (thumbsDB, FATblocks, i)
SID = 0
while currentBlock != -2:
offset = 0x200 + currentBlock * 0x200
for i in range (offset, offset+0x200, 0x80):
pps_rawname = unpack("64s", thumbsDB[i :i+0x40])[0]
pps_sizeofname = unpack("<h", thumbsDB[i+0x40:i+0x42])[0]
pps_type = unpack("b", thumbsDB[i+0x42:i+0x43])[0]
pps_ts1 = unpack("<Q", thumbsDB[i+0x64:i+0x6c])[0]
pps_ts2 = unpack("<Q", thumbsDB[i+0x6c:i+0x74])[0]
pps_sb = unpack("<l", thumbsDB[i+0x74:i+0x78])[0]
pps_size = unpack("<l", thumbsDB[i+0x78:i+0x7c])[0]
if pps_type == 2: # stream files extraction
rawname = unicode(pps_rawname,"utf-16-le")[0:(pps_sizeofname/2 - 1)]
#SIDstr = "%04i" % SID
SIDstr = rawname [::-1]
if len(SIDstr) < 4:
SIDstr = "%04i" % int(SIDstr)
bytesToWrite = pps_size
if pps_size >= 4096 : # stream located in the FAT
sr = ""
currentStreamBlock = pps_sb
while currentStreamBlock != -2:
sOffset = 0x200 + currentStreamBlock * 0x200
if bytesToWrite >= 512:
sr = sr + thumbsDB[sOffset:sOffset + 512]
else:
sr = sr + thumbsDB[sOffset:sOffset + bytesToWrite]
bytesToWrite = bytesToWrite - 512
currentStreamBlock = nextBlock (thumbsDB, FATblocks,
currentStreamBlock)
else: # stream located in the MiniFAT
sr = ""
currentStreamMiniBlock = pps_sb
while currentStreamMiniBlock != -2 :
# computing offset of the miniBlock to copy
# 1 : which block of the miniFATstream ?
nb = currentStreamMiniBlock / 8
# 2 : where is this block ?
bl = MiniFATstreamBlocks[nb]
# 3 : which offset from the start of block ?
ioffset = (currentStreamMiniBlock % 8) * 64
sOffset = 0x200 + bl*0x200 + ioffset
if bytesToWrite >= 64:
sr = sr + thumbsDB[sOffset:sOffset + 64 ]
else:
sr = sr + thumbsDB[sOffset:sOffset + bytesToWrite]
bytesToWrite = bytesToWrite - 64
# computing next currentStreamMiniBlock
currentStreamMiniBlock = nextBlock (thumbsDB,
MiniFATblocks,
currentStreamMiniBlock)
# extraction stream processing ... ---------------------------------
longueur = len(sr)
# is this a Catalog ?
if rawname == "Catalog" :
# -------------------------------------------------------------
# Skipping catalog header block ...
recordLen = unpack("<h", sr[0:2])[0]
indcat = recordLen
SID = SID - 1
# -------------------------------------------------------------
# Analyzing Catalog entries ...
while indcat < longueur :
recordLen = unpack("<h", sr[indcat :indcat+2])[0]
num = unpack("<l", sr[indcat+4 :indcat+8])[0]
timestamp = unpack("<Q", sr[indcat+8 :indcat+16])[0]
nameLen = recordLen - 0x14
originame = sr[indcat+16 :indcat+16+nameLen]
TNid = "%04i" % num
TNtimestamp = ctime(conv2pytime(timestamp))
TNname = unicode(originame,
'utf-16-le').encode('iso-8859-1', 'replace')
print " " + TNid, " ", TNtimestamp, " ", TNname
addCatEntry(num, TNtimestamp, TNname)
indcat = indcat + recordLen
else :
# is EOI = 0xffd9 ?
if sr[longueur-2:longueur] != EOI:
print >> sys.stderr, " *** Err: missing EOI in stream", SID
sys.exit(2)
# --------------------------- header 1 ------------------------
# is first header OK ?
if sr[0:2] != HEADER1:
print >> sys.stderr, \
" *** Err: unrecognized header in stream", SID
sys.exit(3)
# is length OK ?
if unpack("<H", sr[8:10])[0] != (longueur - 0x0c) :
print >> sys.stderr, " *** Err: length error in stream", SID
sys.exit(4)
# --------------------------- header 2 ------------------------
# is it a type 2 thumbnail ? (full jpeg)
if sr[0x0c:0x10] == "\xff\xd8\xff\xe0" :
if outputdir != None :
open(outputdir + TNfname(SIDstr, "2") + ".jpg", \
"wb").write(sr[0x0c:])
elif unpack("<L",sr[0x0c:0x10])[0] == 1 :
# is second header OK ?
if unpack("<H", sr[0x0c+4:0x0c+6])[0] != (longueur -
0x0c - 0x10):
print >> sys.stderr, \
" *** Err : length(2) error in stream", SID
sys.exit(5)
# Type 1 TN processing ...
if (PIL == "imported") and (outputdir != None):
type1sr = header[:0x14]
type1sr = type1sr + quantization
type1sr = type1sr + sr[0x1e:0x34]
type1sr = type1sr + huffman
type1sr = type1sr + sr[0x34:]
im = Image.open(StringIO.StringIO(type1sr))
r, g, b, a = im.split()
im = Image.merge("RGB", (b, g, r))
im = im.transpose(Image.FLIP_TOP_BOTTOM)
im.save(outputdir + TNfname(SIDstr, "1") + ".jpg", \
"JPEG", quality=100)
elif outputdir != None: # Cannot extract : PIL not imported
addTNStream(int(SIDstr), "1", "")
else :
print >> sys.stderr, \
" *** Err : header (2) error in stream", SID
sys.exit(6)
# -----------------------------------------------------------------
elif pps_type == 5: # Root Entry
REtimestamp = pps_ts2
print
print " Root Entry modify timestamp :", \
ctime(conv2pytime(REtimestamp))
if htmlrep == True:
report.SetREtst (ctime(conv2pytime(REtimestamp)))
print
print " ------------------------------------------------------"
print
SID = SID + 1
currentBlock = nextBlock(thumbsDB, FATblocks, currentBlock)
print
print " ------------------------------------------------------"
print
if catIndxOutOfSeq() == True:
print >> sys.stderr, " * Info: ", tDBfname, "Catalog",\
" index number out of usual sequence"
if tnStreamOutOfSeq() == True:
print >> sys.stderr, " * Info: ", tDBfname, \
"thumbnail stream index number out of usual sequence"
if (outputdir != None) and (nbCatEnt() != nbTNstr()):
print >> sys.stderr, " ** Warning: ", tDBfname, " -- number of extracted ", \
"thumbnails does not match number of Catalog entries"
statstring = extractStats(outputdir)
print statstring
if htmlrep == True:
report.flush(statstring)
|