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Various health fixes
This commit is contained in:
Andrew Murray
parent
b213f63c59
commit
f55f2d13cb
196
PIL/OleFileIO.py
196
PIL/OleFileIO.py
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@ -399,12 +399,12 @@ WORD_CLSID = "00020900-0000-0000-C000-000000000046"
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#TODO: check Excel, PPT, ...
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#[PL]: Defect levels to classify parsing errors - see OleFileIO._raise_defect()
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DEFECT_UNSURE = 10 # a case which looks weird, but not sure it's a defect
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DEFECT_POTENTIAL = 20 # a potential defect
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DEFECT_INCORRECT = 30 # an error according to specifications, but parsing
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# can go on
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DEFECT_FATAL = 40 # an error which cannot be ignored, parsing is
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# impossible
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DEFECT_UNSURE = 10 # a case which looks weird, but not sure it's a defect
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DEFECT_POTENTIAL = 20 # a potential defect
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DEFECT_INCORRECT = 30 # an error according to specifications, but parsing
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# can go on
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DEFECT_FATAL = 40 # an error which cannot be ignored, parsing is
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# impossible
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# Minimal size of an empty OLE file, with 512-bytes sectors = 1536 bytes
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# (this is used in isOleFile and OleFile.open)
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@ -504,20 +504,20 @@ def _clsid(clsid):
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def filetime2datetime(filetime):
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"""
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convert FILETIME (64 bits int) to Python datetime.datetime
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"""
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# TODO: manage exception when microseconds is too large
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# inspired from http://code.activestate.com/recipes/511425-filetime-to-datetime/
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_FILETIME_null_date = datetime.datetime(1601, 1, 1, 0, 0, 0)
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#debug('timedelta days=%d' % (filetime//(10*1000000*3600*24)))
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return _FILETIME_null_date + datetime.timedelta(microseconds=filetime//10)
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"""
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convert FILETIME (64 bits int) to Python datetime.datetime
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"""
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# TODO: manage exception when microseconds is too large
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# inspired from http://code.activestate.com/recipes/511425-filetime-to-datetime/
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_FILETIME_null_date = datetime.datetime(1601, 1, 1, 0, 0, 0)
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#debug('timedelta days=%d' % (filetime//(10*1000000*3600*24)))
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return _FILETIME_null_date + datetime.timedelta(microseconds=filetime//10)
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#=== CLASSES ==================================================================
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class OleMetadata:
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class OleMetadata(object):
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"""
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class to parse and store metadata from standard properties of OLE files.
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@ -803,7 +803,7 @@ class _OleStream(io.BytesIO):
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#--- _OleDirectoryEntry -------------------------------------------------------
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class _OleDirectoryEntry:
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class _OleDirectoryEntry(object):
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"""
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OLE2 Directory Entry
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@ -1064,7 +1064,7 @@ class _OleDirectoryEntry:
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#--- OleFileIO ----------------------------------------------------------------
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class OleFileIO:
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class OleFileIO(object):
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"""
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OLE container object
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@ -1935,12 +1935,12 @@ class OleFileIO:
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nb_sectors = (size + (self.sectorsize-1)) // self.sectorsize
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debug('nb_sectors = %d' % nb_sectors)
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for i in range(nb_sectors):
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## try:
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## self.fp.seek(offset + self.sectorsize * sect)
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## except:
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## debug('sect=%d, seek=%d' %
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## (sect, offset+self.sectorsize*sect))
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## raise IOError('OLE sector index out of range')
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# try:
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# self.fp.seek(offset + self.sectorsize * sect)
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# except:
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# debug('sect=%d, seek=%d' %
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# (sect, offset+self.sectorsize*sect))
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# raise IOError('OLE sector index out of range')
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# extract one sector from data, the last one being smaller:
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if i<(nb_sectors-1):
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data_sector = data [i*self.sectorsize : (i+1)*self.sectorsize]
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@ -2071,7 +2071,7 @@ class OleFileIO:
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"""
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#REFERENCE: [MS-OLEPS] https://msdn.microsoft.com/en-us/library/dd942421.aspx
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# make sure no_conversion is a list, just to simplify code below:
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if no_conversion == None:
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if no_conversion is None:
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no_conversion = []
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# stream path as a string to report exceptions:
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streampath = filename
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@ -2226,8 +2226,6 @@ class OleFileIO:
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if __name__ == "__main__":
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import sys
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# [PL] display quick usage info if launched from command-line
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if len(sys.argv) <= 1:
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print('olefile version %s %s - %s' % (__version__, __date__, __author__))
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@ -2247,55 +2245,55 @@ For more information, see http://www.decalage.info/olefile
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check_streams = False
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for filename in sys.argv[1:]:
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## try:
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# OPTIONS:
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if filename == '-d':
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# option to switch debug mode on:
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set_debug_mode(True)
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continue
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if filename == '-c':
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# option to switch check streams mode on:
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check_streams = True
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continue
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# try:
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# OPTIONS:
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if filename == '-d':
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# option to switch debug mode on:
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set_debug_mode(True)
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continue
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if filename == '-c':
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# option to switch check streams mode on:
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check_streams = True
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continue
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ole = OleFileIO(filename)#, raise_defects=DEFECT_INCORRECT)
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print("-" * 68)
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print(filename)
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print("-" * 68)
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ole.dumpdirectory()
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ole = OleFileIO(filename)#, raise_defects=DEFECT_INCORRECT)
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print("-" * 68)
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print(filename)
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print("-" * 68)
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ole.dumpdirectory()
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for streamname in ole.listdir():
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if streamname[-1][0] == "\005":
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print(streamname, ": properties")
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props = ole.getproperties(streamname, convert_time=True)
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props = sorted(props.items())
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for k, v in props:
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#[PL]: avoid to display too large or binary values:
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if isinstance(v, (basestring, bytes)):
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if len(v) > 50:
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v = v[:50]
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if isinstance(v, bytes):
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# quick and dirty binary check:
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for c in (1,2,3,4,5,6,7,11,12,14,15,16,17,18,19,20,
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21,22,23,24,25,26,27,28,29,30,31):
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if c in bytearray(v):
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v = '(binary data)'
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break
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print(" ", k, v)
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if check_streams:
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# Read all streams to check if there are errors:
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print('\nChecking streams...')
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for streamname in ole.listdir():
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if streamname[-1][0] == "\005":
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print(streamname, ": properties")
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props = ole.getproperties(streamname, convert_time=True)
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props = sorted(props.items())
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for k, v in props:
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#[PL]: avoid to display too large or binary values:
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if isinstance(v, (basestring, bytes)):
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if len(v) > 50:
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v = v[:50]
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if isinstance(v, bytes):
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# quick and dirty binary check:
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for c in (1,2,3,4,5,6,7,11,12,14,15,16,17,18,19,20,
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21,22,23,24,25,26,27,28,29,30,31):
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if c in bytearray(v):
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v = '(binary data)'
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break
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print(" ", k, v)
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if check_streams:
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# Read all streams to check if there are errors:
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print('\nChecking streams...')
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for streamname in ole.listdir():
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# print name using repr() to convert binary chars to \xNN:
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print('-', repr('/'.join(streamname)),'-', end=' ')
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st_type = ole.get_type(streamname)
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if st_type == STGTY_STREAM:
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print('size %d' % ole.get_size(streamname))
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# just try to read stream in memory:
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ole.openstream(streamname)
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else:
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print('NOT a stream : type=%d' % st_type)
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print()
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# print name using repr() to convert binary chars to \xNN:
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print('-', repr('/'.join(streamname)),'-', end=' ')
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st_type = ole.get_type(streamname)
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if st_type == STGTY_STREAM:
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print('size %d' % ole.get_size(streamname))
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# just try to read stream in memory:
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ole.openstream(streamname)
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else:
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print('NOT a stream : type=%d' % st_type)
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print()
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## for streamname in ole.listdir():
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## # print name using repr() to convert binary chars to \xNN:
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@ -2303,34 +2301,34 @@ For more information, see http://www.decalage.info/olefile
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## print(ole.getmtime(streamname))
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## print()
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print('Modification/Creation times of all directory entries:')
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for entry in ole.direntries:
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if entry is not None:
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print('- %s: mtime=%s ctime=%s' % (entry.name,
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entry.getmtime(), entry.getctime()))
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print()
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print('Modification/Creation times of all directory entries:')
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for entry in ole.direntries:
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if entry is not None:
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print('- %s: mtime=%s ctime=%s' % (entry.name,
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entry.getmtime(), entry.getctime()))
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print()
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# parse and display metadata:
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meta = ole.get_metadata()
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meta.dump()
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print()
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#[PL] Test a few new methods:
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root = ole.get_rootentry_name()
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print('Root entry name: "%s"' % root)
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if ole.exists('worddocument'):
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print("This is a Word document.")
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print("type of stream 'WordDocument':", ole.get_type('worddocument'))
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print("size :", ole.get_size('worddocument'))
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if ole.exists('macros/vba'):
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print("This document may contain VBA macros.")
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# parse and display metadata:
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meta = ole.get_metadata()
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meta.dump()
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print()
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#[PL] Test a few new methods:
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root = ole.get_rootentry_name()
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print('Root entry name: "%s"' % root)
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if ole.exists('worddocument'):
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print("This is a Word document.")
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print("type of stream 'WordDocument':", ole.get_type('worddocument'))
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print("size :", ole.get_size('worddocument'))
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if ole.exists('macros/vba'):
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print("This document may contain VBA macros.")
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# print parsing issues:
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print('\nNon-fatal issues raised during parsing:')
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if ole.parsing_issues:
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for exctype, msg in ole.parsing_issues:
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print('- %s: %s' % (exctype.__name__, msg))
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else:
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print('None')
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# print parsing issues:
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print('\nNon-fatal issues raised during parsing:')
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if ole.parsing_issues:
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for exctype, msg in ole.parsing_issues:
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print('- %s: %s' % (exctype.__name__, msg))
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else:
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print('None')
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## except IOError as v:
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## print("***", "cannot read", file, "-", v)
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