oledir.py
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#!/usr/bin/env python
"""
oledir.py
oledir parses OLE files to display technical information about its directory
entries, including deleted/orphan streams/storages and unused entries.
Author: Philippe Lagadec - http://www.decalage.info
License: BSD, see source code or documentation
oledir is part of the python-oletools package:
http://www.decalage.info/python/oletools
"""
#=== LICENSE ==================================================================
# oledir is copyright (c) 2015-2016 Philippe Lagadec (http://www.decalage.info)
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without modification,
# are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice, this
# list of conditions and the following disclaimer.
# * 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.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "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 COPYRIGHT HOLDER OR CONTRIBUTORS 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.
#------------------------------------------------------------------------------
# CHANGELOG:
# 2015-04-17 v0.01 PL: - first version
# 2015-04-21 v0.02 PL: - improved display with prettytable
# 2016-01-13 v0.03 PL: - replaced prettytable by tablestream, added colors
# 2016-07-20 v0.50 SL: - added Python 3 support
# 2016-08-09 PL: - fixed issue #77 (imports from thirdparty dir)
__version__ = '0.50'
#------------------------------------------------------------------------------
# TODO:
# TODO: show FAT/MiniFAT
# TODO: show errors when reading streams
# === IMPORTS ================================================================
import sys, os
# add the thirdparty subfolder to sys.path (absolute+normalized path):
_thismodule_dir = os.path.normpath(os.path.abspath(os.path.dirname(__file__)))
# print('_thismodule_dir = %r' % _thismodule_dir)
# assumption: the thirdparty dir is a subfolder:
_thirdparty_dir = os.path.normpath(os.path.join(_thismodule_dir, 'thirdparty'))
# print('_thirdparty_dir = %r' % _thirdparty_dir)
if not _thirdparty_dir in sys.path:
sys.path.insert(0, _thirdparty_dir)
import colorclass
# On Windows, colorclass needs to be enabled:
if os.name == 'nt':
colorclass.Windows.enable(auto_colors=True)
import olefile
from tablestream import tablestream
# === CONSTANTS ==============================================================
STORAGE_NAMES = {
olefile.STGTY_EMPTY: 'Empty',
olefile.STGTY_STORAGE: 'Storage',
olefile.STGTY_STREAM: 'Stream',
olefile.STGTY_LOCKBYTES: 'ILockBytes',
olefile.STGTY_PROPERTY: 'IPropertyStorage',
olefile.STGTY_ROOT: 'Root',
}
STORAGE_COLORS = {
olefile.STGTY_EMPTY: 'green',
olefile.STGTY_STORAGE: 'blue',
olefile.STGTY_STREAM: 'yellow',
olefile.STGTY_LOCKBYTES: 'magenta',
olefile.STGTY_PROPERTY: 'magenta',
olefile.STGTY_ROOT: 'cyan',
}
STATUS_COLORS = {
'unused': 'green',
'<Used>': 'yellow',
'ORPHAN': 'red',
}
# === FUNCTIONS ==============================================================
def sid_display(sid):
if sid == olefile.NOSTREAM:
return '-' # None
else:
return sid
# === MAIN ===================================================================
def main():
# print banner with version
print('oledir %s - http://decalage.info/python/oletools' % __version__)
if os.name == 'nt':
colorclass.Windows.enable(auto_colors=True, reset_atexit=True)
fname = sys.argv[1]
print('OLE directory entries in file %s:' % fname)
ole = olefile.OleFileIO(fname)
# ole.dumpdirectory()
# t = prettytable.PrettyTable(('id', 'Status', 'Type', 'Name', 'Left', 'Right', 'Child', '1st Sect', 'Size'))
# t.align = 'l'
# t.max_width['id'] = 4
# t.max_width['Status'] = 6
# t.max_width['Type'] = 10
# t.max_width['Name'] = 10
# t.max_width['Left'] = 5
# t.max_width['Right'] = 5
# t.max_width['Child'] = 5
# t.max_width['1st Sect'] = 8
# t.max_width['Size'] = 6
table = tablestream.TableStream(column_width=[4, 6, 7, 22, 5, 5, 5, 8, 6],
header_row=('id', 'Status', 'Type', 'Name', 'Left', 'Right', 'Child', '1st Sect', 'Size'),
style=tablestream.TableStyleSlim)
# TODO: read ALL the actual directory entries from the directory stream, because olefile does not!
# TODO: OR fix olefile!
# TODO: olefile should store or give access to the raw direntry data on demand
# TODO: oledir option to hexdump the raw direntries
# TODO: olefile should be less picky about incorrect directory structures
for id in range(len(ole.direntries)):
d = ole.direntries[id]
if d is None:
# this direntry is not part of the tree: either unused or an orphan
d = ole._load_direntry(id) #ole.direntries[id]
# print('%03d: %s *** ORPHAN ***' % (id, d.name))
if d.entry_type == olefile.STGTY_EMPTY:
status = 'unused'
else:
status = 'ORPHAN'
else:
# print('%03d: %s' % (id, d.name))
status = '<Used>'
if d.name.startswith('\x00'):
# this may happen with unused entries, the name may be filled with zeroes
name = ''
else:
# handle non-printable chars using repr(), remove quotes:
name = repr(d.name)[1:-1]
left = sid_display(d.sid_left)
right = sid_display(d.sid_right)
child = sid_display(d.sid_child)
entry_type = STORAGE_NAMES.get(d.entry_type, 'Unknown')
etype_color = STORAGE_COLORS.get(d.entry_type, 'red')
status_color = STATUS_COLORS.get(status, 'red')
# print(' type=%7s sid_left=%s sid_right=%s sid_child=%s'
# %(entry_type, left, right, child))
# t.add_row((id, status, entry_type, name, left, right, child, hex(d.isectStart), d.size))
table.write_row((id, status, entry_type, name, left, right, child, '%X' % d.isectStart, d.size),
colors=(None, status_color, etype_color, None, None, None, None, None, None))
ole.close()
# print t
if __name__ == '__main__':
main()