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📁 ..
📄 __init__.py(578 B)
📄 __init__.pyc(162 B)
📄 blackwhitelist.py(10.08 KB)
📄 blackwhitelist.pyc(7.95 KB)
📄 call-ahead.py(77.45 KB)
📄 call-ahead.pyc(67.93 KB)
📄 complexrules.py(14.59 KB)
📄 complexrules.pyc(17.37 KB)
📄 dbwriter.py(5.7 KB)
📄 dbwriter.pyc(4.69 KB)
📄 ebl-lookup.py(9.03 KB)
📄 ebl-lookup.pyc(8.3 KB)
📄 enforcetls.py(5.1 KB)
📄 enforcetls.pyc(4.39 KB)
📄 fluentd_writer.py(6.92 KB)
📄 fluentd_writer.pyc(6.73 KB)
📄 geoip.py(7.47 KB)
📄 geoip.pyc(7.4 KB)
📄 helotld.py(3.37 KB)
📄 helotld.pyc(3.07 KB)
📄 killer.py(1.15 KB)
📄 killer.pyc(1.47 KB)
📄 messagesize.py(3.86 KB)
📄 messagesize.pyc(3.54 KB)
📄 originpolicy.py(11.2 KB)
📄 originpolicy.pyc(9.51 KB)
📁 ratelimit
📄 rdns.py(4.42 KB)
📄 rdns.pyc(4.82 KB)
📄 recipientrules.py(11.64 KB)
📄 recipientrules.pyc(10.1 KB)
📄 script.py(5.55 KB)
📄 script.pyc(6 KB)
📄 spfcheck.py(15.57 KB)
📄 spfcheck.pyc(11.36 KB)
📄 srs.py(4.51 KB)
📄 srs.pyc(3.85 KB)
📄 suspect_collect.py(7.84 KB)
📄 suspect_collect.pyc(8.42 KB)

Editing: srs.py

# -*- coding: UTF-8 -*-
#   Copyright 2012-2018 Fumail Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
#
#

from postomaat.shared import ScannerPlugin, DUNNO, REJECT, apply_template
try:
    import SRS
    HAVE_SRS=True
except ImportError:
    SRS=None
    HAVE_SRS=False

class SRSBounceVerify(ScannerPlugin):
    """
    This plugin checks the validity of SRS bounces.
    Intended to be used in conjunction with after queue SRS mechanisms such as Fuglu's SRS Plugin.
    """

def __init__(self,config,section=None):
        ScannerPlugin.__init__(self,config,section)
        self.logger=self._logger()

self.requiredvars = {
            'forward_domain': {
                'default': 'example.com',
                'description': 'the SRS envelope sender domain',
            },

'secret': {
                'default': '',
                'description': 'cryptographic secret. set the same random value on all your machines',
            },

'maxage': {
                'default': '8',
                'description': 'maximum lifetime of bounces',
            },

'hashlength': {
                'default': '8',
                'description': 'size of auth code',
            },

'separator': {
                'default': '=',
                'description': 'SRS token separator',
            },

'messagetemplate':{
                'default':'${from_address} is not a valid SRS bounce address'
            },
            
            'accept_unsigned': {
                'default': 'True',
                'description': 'Accept unsigend (non SRS) recpients. Set to False to reject',
            }

}
    
    
    
    def _init_srs(self):
        secret = self.config.get(self.section, 'secret')
        maxage = self.config.getint(self.section, 'maxage')
        hashlength = self.config.getint(self.section, 'hashlength')
        separator = self.config.get(self.section, 'separator')
        srs = SRS.new(secret=secret, maxage=maxage, hashlength=hashlength, separator=separator, alwaysrewrite=True)
        return srs
    
        
        
    def examine(self, suspect):
        if not HAVE_SRS:
            return DUNNO
        
        forward_domain = self.config.get(self.section, 'forward_domain')
        if suspect.to_domain != forward_domain:
            self.logger.debug('SRS: ignoring mail to %s - only accepting %s' % (suspect.to_address, forward_domain))
            return DUNNO
        
        action = DUNNO
        message = None
        
        srs = self._init_srs()
        if suspect.to_address.lower().startswith('srs'):
            orig_rcpt = suspect.to_address
            try:
                recipient = srs.reverse(orig_rcpt)
                self.logger.info('SRS: decrypted bounce address %s to %s' % (orig_rcpt, recipient))
            except Exception as e:
                self.logger.error('SRS: Failed to decrypt %s reason: %s' % (orig_rcpt, str(e)))
                action = REJECT
                message = apply_template(self.config.get(self.section, 'messagetemplate'), suspect)
        else:
            self.logger.debug('SRS: ignoring unsigned address %s' % (suspect.to_address))
            if not self.config.getboolean(self.section, 'accept_unsigned'):
                action = REJECT
                message = apply_template(self.config.get(self.section, 'messagetemplate'), suspect)
                
        return action, message
        
        
        
    def lint(self):
        allok = self.checkConfig()
        if not HAVE_SRS:
            allok = False
            print('SRS library not found')
            
        if self.config.get(self.section, 'secret') == '':
            allok = False
            print('no secret set in config')
        
        if allok:
            srs = self._init_srs()
            forward_domain = self.config.get(self.section, 'forward_domain')
            srs.forward('foobar@example.com', forward_domain)
            
        return allok
    
    
    
    def __str__(self):
        return "SRSBounceVerify"

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Editing: srs.py

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