/usr/bin/srs2envtol is in pysrs-bin 1.0.3-1.
This file is owned by root:root, with mode 0o755.
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 | #!/usr/bin/python3
# sendmail program map for SRS
#
# Use only if absolutely necessary. It is *very* inefficient and
# a security risk.
#
# Copyright (c) 2004-2010 Business Management Systems. All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the same terms as Python itself.
import SRS
import re
from ConfigParser import ConfigParser, DuplicateSectionError
# get SRS parameters from milter configuration
cp = ConfigParser({
'secret': 'shhhh!',
'maxage': '8',
'hashlength': '8',
'separator': '='
})
cp.read(["/etc/mail/pysrs.cfg"])
try:
cp.add_section('srs')
except DuplicateSectionError:
pass
srs = SRS.new(
secret=cp.get('srs','secret'),
maxage=cp.getint('srs','maxage'),
hashlength=cp.getint('srs','hashlength'),
separator=cp.get('srs','separator')
)
srs.warn = lambda x: x # ignore case smash warning
del cp
def reverse(old_address):
# Munge ParseLocal recipient in the same manner as required
# in EnvFromSMTP.
use_address = re.compile(r'[<>]').sub('',old_address)
use_address = re.compile(r'\.$').sub('',use_address)
# Just try and reverse the address. If we succeed, return this
# new address; else, return the old address (quoted if it was
# a piped alias).
try:
use_address = srs.reverse(use_address)
while True:
try:
use_address = srs.reverse(use_address)
except: break
return use_address.replace('@','<@',1)+'.>'
except:
if use_address.startswith('|'):
return '"%s"' % old_address
else:
return old_address
if __name__ == "__main__":
import sys
# No funny business in our output, please
sys.stderr.close()
print(reverse(sys.argv[1]))
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