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# Copyright (C) 2002-2018 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.
"""Recognizes (some) Microsoft Exchange formats."""
import re
import email.Iterators
scre = re.compile('did not reach the following recipient')
ecre = re.compile('MSEXCH:')
a1cre = re.compile('SMTP=(?P<addr>[^;]+); on ')
a2cre = re.compile('(?P<addr>[^ ]+) on ')
def process(msg):
addrs = {}
it = email.Iterators.body_line_iterator(msg)
# Find the start line
for line in it:
if scre.search(line):
break
else:
return []
# Search each line until we hit the end line
for line in it:
if ecre.search(line):
break
mo = a1cre.search(line)
if not mo:
mo = a2cre.search(line)
if mo:
addrs[mo.group('addr')] = 1
return addrs.keys()
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