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# Copyright (C) 1998-2018 by the Free Software Foundation, Inc.
#
# This program 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.
#
# This program 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 this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
"""Parse mystery style generated by MTA at caiwireless.net."""
import re
import email
from cStringIO import StringIO
tcre = re.compile(r'the following recipients did not receive this message:',
re.IGNORECASE)
acre = re.compile(r'<(?P<addr>[^>]*)>')
def process(msg):
if msg.get_content_type() <> 'multipart/mixed':
return None
# simple state machine
# 0 == nothing seen
# 1 == tag line seen
state = 0
# This format thinks it's a MIME, but it really isn't
for line in email.Iterators.body_line_iterator(msg):
line = line.strip()
if state == 0 and tcre.match(line):
state = 1
elif state == 1 and line:
mo = acre.match(line)
if not mo:
return None
return [mo.group('addr')]
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