This file is indexed.

/usr/lib/python2.7/dist-packages/vobject/win32tz.py is in python-vobject 0.8.1c-4.1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
import _winreg
import struct
import datetime

handle=_winreg.ConnectRegistry(None, _winreg.HKEY_LOCAL_MACHINE)
tzparent=_winreg.OpenKey(handle,
            "SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Time Zones")
parentsize=_winreg.QueryInfoKey(tzparent)[0]

localkey=_winreg.OpenKey(handle,
            "SYSTEM\\CurrentControlSet\\Control\\TimeZoneInformation")
WEEKS=datetime.timedelta(7)

def list_timezones():
    """Return a list of all time zones known to the system."""
    l=[]
    for i in xrange(parentsize):
        l.append(_winreg.EnumKey(tzparent, i))
    return l

class win32tz(datetime.tzinfo):
    """tzinfo class based on win32's timezones available in the registry.
    
    >>> local = win32tz('Central Standard Time')
    >>> oct1 = datetime.datetime(month=10, year=2004, day=1, tzinfo=local)
    >>> dec1 = datetime.datetime(month=12, year=2004, day=1, tzinfo=local)
    >>> oct1.dst()
    datetime.timedelta(0, 3600)
    >>> dec1.dst()
    datetime.timedelta(0)
    >>> braz = win32tz('E. South America Standard Time')
    >>> braz.dst(oct1)
    datetime.timedelta(0)
    >>> braz.dst(dec1)
    datetime.timedelta(0, 3600)
    
    """
    def __init__(self, name):
        self.data=win32tz_data(name)
        
    def utcoffset(self, dt):
        if self._isdst(dt):
            return datetime.timedelta(minutes=self.data.dstoffset)
        else:
            return datetime.timedelta(minutes=self.data.stdoffset)

    def dst(self, dt):
        if self._isdst(dt):
            minutes = self.data.dstoffset - self.data.stdoffset
            return datetime.timedelta(minutes=minutes)
        else:
            return datetime.timedelta(0)
        
    def tzname(self, dt):
        if self._isdst(dt): return self.data.dstname
        else: return self.data.stdname
    
    def _isdst(self, dt):
        dat=self.data
        dston = pickNthWeekday(dt.year, dat.dstmonth, dat.dstdayofweek,
                               dat.dsthour, dat.dstminute, dat.dstweeknumber)
        dstoff = pickNthWeekday(dt.year, dat.stdmonth, dat.stddayofweek,
                                dat.stdhour, dat.stdminute, dat.stdweeknumber)
        if dston < dstoff:
            if dston <= dt.replace(tzinfo=None) < dstoff: return True
            else: return False
        else:
            if dstoff <= dt.replace(tzinfo=None) < dston: return False
            else: return True

    def __repr__(self):
        return "<win32tz - %s>" % self.data.display

def pickNthWeekday(year, month, dayofweek, hour, minute, whichweek):
    """dayofweek == 0 means Sunday, whichweek > 4 means last instance"""
    first = datetime.datetime(year=year, month=month, hour=hour, minute=minute,
                              day=1)
    weekdayone = first.replace(day=((dayofweek - first.isoweekday()) % 7 + 1))
    for n in xrange(whichweek - 1, -1, -1):
        dt=weekdayone + n * WEEKS
        if dt.month == month: return dt


class win32tz_data(object):
    """Read a registry key for a timezone, expose its contents."""
    
    def __init__(self, path):
        """Load path, or if path is empty, load local time."""
        if path:
            keydict=valuesToDict(_winreg.OpenKey(tzparent, path))
            self.display = keydict['Display']
            self.dstname = keydict['Dlt']
            self.stdname = keydict['Std']
            
            #see http://ww_winreg.jsiinc.com/SUBA/tip0300/rh0398.htm
            tup = struct.unpack('=3l16h', keydict['TZI'])
            self.stdoffset = -tup[0]-tup[1] #Bias + StandardBias * -1
            self.dstoffset = self.stdoffset - tup[2] # + DaylightBias * -1
            
            offset=3
            self.stdmonth = tup[1 + offset]
            self.stddayofweek = tup[2 + offset] #Sunday=0
            self.stdweeknumber = tup[3 + offset] #Last = 5
            self.stdhour = tup[4 + offset]
            self.stdminute = tup[5 + offset]
            
            offset=11
            self.dstmonth = tup[1 + offset]
            self.dstdayofweek = tup[2 + offset] #Sunday=0
            self.dstweeknumber = tup[3 + offset] #Last = 5
            self.dsthour = tup[4 + offset]
            self.dstminute = tup[5 + offset]
            
        else:
            keydict=valuesToDict(localkey)
            
            self.stdname = keydict['StandardName']
            self.dstname = keydict['DaylightName']
            
            sourcekey=_winreg.OpenKey(tzparent, self.stdname)
            self.display = valuesToDict(sourcekey)['Display']
            
            self.stdoffset = -keydict['Bias']-keydict['StandardBias']
            self.dstoffset = self.stdoffset - keydict['DaylightBias']

            #see http://ww_winreg.jsiinc.com/SUBA/tip0300/rh0398.htm
            tup = struct.unpack('=8h', keydict['StandardStart'])

            offset=0
            self.stdmonth = tup[1 + offset]
            self.stddayofweek = tup[2 + offset] #Sunday=0
            self.stdweeknumber = tup[3 + offset] #Last = 5
            self.stdhour = tup[4 + offset]
            self.stdminute = tup[5 + offset]
            
            tup = struct.unpack('=8h', keydict['DaylightStart'])
            self.dstmonth = tup[1 + offset]
            self.dstdayofweek = tup[2 + offset] #Sunday=0
            self.dstweeknumber = tup[3 + offset] #Last = 5
            self.dsthour = tup[4 + offset]
            self.dstminute = tup[5 + offset]

def valuesToDict(key):
    """Convert a registry key's values to a dictionary."""
    dict={}
    size=_winreg.QueryInfoKey(key)[1]
    for i in xrange(size):
        dict[_winreg.EnumValue(key, i)[0]]=_winreg.EnumValue(key, i)[1]
    return dict

def _test():
    import win32tz, doctest
    doctest.testmod(win32tz, verbose=0)

if __name__ == '__main__':
    _test()