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mailfilter.py
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mailfilter.py
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import poplib, imaplib, smtplib
import email, email.parser, email.message, email.header, rfc822
import sys, os, os.path, re, datetime, time
import imp, pickle, argparse
import pprint, traceback
class Filter:
def matches( self, msg ):
raise Exception("not implemented")
def __str__( self ):
return type(self)
class Yes (Filter):
def matches( self, msg ):
return True
def __str__( self ):
return "Yes"
class And (Filter):
def __init__(self, *filters):
self.filters = filters
def matches( self, msg ):
for f in self.filters:
if not f.matches( msg ):
return False
return True
def __str__( self ):
return "( " + reduce( lambda s, t: "%s and %s" % (s, t), self.filters ) + " )"
class Not (Filter):
def __init__(self, filter):
self.filter = filter
def matches( self, msg ):
return not self.filter.matches(msg)
def __str__( self ):
return "Not %s" % self.filter
class Or (Filter):
def __init__(self, *filters):
self.filters = filters
def matches( self, msg ):
for f in self.filters:
if f.matches( msg ):
return True
return False
def __str__( self ):
return "( " + reduce( lambda s, t: "%s or %s" % (s, t), self.filters ) + " )"
class HeaderFilter (Filter):
def __init__(self, header):
self.header = header
def matches( self, msg ):
#TODO: allow access to xx_vars here!
if self.header.startswith("xx_"):
try:
hh = getattr( msg, self.header )
except:
hh = None
else:
hh = msg.get_all(self.header)
if not type(hh) in (tuple, list, set):
hh = ( hh, )
if hh:
for h in hh:
h = decode_header_str( h )
if self.matches_value( h ):
return True
return False
def matches_value( self, v ):
return Exception("not implemented")
class Matches (HeaderFilter):
def __init__(self, header, regex, flags = 0):
HeaderFilter.__init__(self, header)
if type(regex) == str or type(regex) == unicode:
self.regex = re.compile(regex, flags)
else:
self.regex = regex
def matches_value( self, v ):
if v.startswith('^'):
m = self.regex.match( v )
else:
m = self.regex.search( v )
if m: return True
else: return False
def __str__( self ):
return "%s ~~ %s" % (self.header, self.regex.pattern)
class Equals (HeaderFilter):
def __init__(self, header, value):
HeaderFilter.__init__(self, header)
self.value = value
def matches_value( self, v ):
return v == self.value
def __str__( self ):
return "%s == %s" % (self.header, self.value)
class HasTag (Equals):
def __init__(self, tag):
Equals.__init__(self, "xx_flags", tag)
class Contains (Matches):
def __init__(self, header, value, case_sensitive = False):
if case_sensitive:
f = rs.CASE_SENSITIVE
else:
f = 0
if type(value) != str:
p = "(" + "|".join( map( lambda s: re.escape(s), value ) ) + ")"
else:
p = re.escape(value)
Matches.__init__(self, header, '.*' + p + '.*', f)
class Greater (HeaderFilter):
def __init__(self, header, value):
HeaderFilter.__init__(self, header)
self.value = value
def matches_value( self, v ):
return v > self.value
def __str__( self ):
return "%s > %s" % (self.header, self.value)
class Less (HeaderFilter):
def __init__(self, header, value):
HeaderFilter.__init__(self, header)
self.value = value
def matches_value( self, v ):
return v < self.value
def __str__( self ):
return "%s < %s" % (self.header, self.value)
class Older (HeaderFilter):
def __init__(self, header, age):
HeaderFilter.__init__(self, header)
if type(age) == str or type(age) == unicode:
if age.endswith("y"):
age = int(age[:-1]) * 365 * 24 * 60 * 60
elif age.endswith("w"):
age = int(age[:-1]) * 7 * 24 * 60 * 60
elif age.endswith("d"):
age = int(age[:-1]) * 24 * 60 * 60
elif age.endswith("h"):
age = int(age[:-1]) * 60 * 60
elif age.endswith("m"):
age = int(age[:-1]) * 60
elif age.endswith("s"):
age = int(age);
else:
age = int(age) * 24 * 60 * 60;
self.age = age
def matches_value( self, v ):
t0 = time.time()
then = rfc822.parsedate_tz( v )
t1 = rfc822.mktime_tz(then)
return (t0 - t1) > self.age
def __str__( self ):
return "%s older than %s seconds" % (self.header, self.value)