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annotate src/plugins/plugin_misc_smtp.py @ 573:db7a03a33612

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installation: added mutagen to setup.py's dependencies
author Goffi <goffi@goffi.org>
date Mon, 07 Jan 2013 23:54:17 +0100
parents 2a072735e459
children 89f9a50ce7bf
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1 #!/usr/bin/python
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2 # -*- coding: utf-8 -*-
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3
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4 """
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5 SàT plugin for managing smtp server
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6 Copyright (C) 2011 Jérôme Poisson (goffi@goffi.org)
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7
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8 This program is free software: you can redistribute it and/or modify
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9 it under the terms of the GNU Affero General Public License as published by
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10 the Free Software Foundation, either version 3 of the License, or
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11 (at your option) any later version.
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12
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13 This program is distributed in the hope that it will be useful,
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14 but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 GNU Affero General Public License for more details.
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17
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18 You should have received a copy of the GNU Affero General Public License
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19 along with this program. If not, see <http://www.gnu.org/licenses/>.
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20 """
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21
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22 from logging import debug, info, error
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23 import warnings
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24 from twisted.internet import protocol,defer
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25 from twisted.words.protocols.jabber import error as jab_error
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26 from twisted.cred import portal,checkers,credentials
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27 from twisted.cred import error as cred_error
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28 from twisted.mail import smtp
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29 from twisted.python import failure
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30 from email.parser import Parser
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31 from email.utils import parseaddr
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32 from twisted.mail.imap4 import LOGINCredentials, PLAINCredentials
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33 import os,os.path
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34 from twisted.internet import reactor
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35 import sys
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36
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37
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38 from zope.interface import implements
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39
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40
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41 PLUGIN_INFO = {
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42 "name": "SMTP server Plugin",
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43 "import_name": "SMTP",
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44 "type": "Misc",
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45 "protocols": [],
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46 "dependencies": ["Maildir"],
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47 "main": "SMTP_server",
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48 "handler": "no",
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49 "description": _("""Create a SMTP server that you can use to send your "normal" type messages""")
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50 }
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51
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52 class SMTP_server():
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53
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54 params = """
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55 <params>
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56 <general>
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57 <category name="Mail Server">
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58 <param name="SMTP Port" value="10125" type="string" />
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59 </category>
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60 </general>
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61 </params>
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62 """
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63
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64 def __init__(self, host):
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65 info(_("Plugin SMTP Server initialization"))
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66 self.host = host
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67
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68 #parameters
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69 host.memory.importParams(self.params)
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70
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71 port = int(self.host.memory.getParamA("SMTP Port", "Mail Server"))
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72 info(_("Launching SMTP server on port %d"), port)
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73
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74 self.server_factory = SmtpServerFactory(self.host)
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75 reactor.listenTCP(port, self.server_factory)
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76
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77 class SatSmtpMessage:
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78 implements(smtp.IMessage)
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79
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80 def __init__(self, host, profile):
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81 self.host=host
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82 self.profile=profile
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83 self.message=[]
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84
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85 def lineReceived(self, line):
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86 """handle another line"""
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87 self.message.append(line)
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88
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89 def eomReceived(self):
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90 """handle end of message"""
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91 mail = Parser().parsestr("\n".join(self.message))
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92 try:
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93 self.host.sendMessage(parseaddr(mail['to'].decode('utf-8','replace'))[1], mail.get_payload().decode('utf-8','replace'), #TODO: manage other charsets
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94 subject=mail['subject'].decode('utf-8','replace'), type='normal', profile_key=self.profile)
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95 except:
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96 exc_type, exc_value, exc_traceback = sys.exc_info()
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97 error(_("Can't send message: %s") % exc_value) #The email is invalid or incorreclty parsed
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98 return defer.fail()
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99 self.message=None
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100 return defer.succeed(None)
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101
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102 def connectionLost(self):
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103 """handle message truncated"""
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104 raise smtp.SMTPError
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105
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106 class SatSmtpDelivery:
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107 implements(smtp.IMessageDelivery)
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108
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109 def __init__(self, host, profile):
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110 self.host=host
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111 self.profile=profile
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112
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113 def receivedHeader(self, helo, origin, recipients):
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114 """
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115 Generate the Received header for a message
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116 @param helo: The argument to the HELO command and the client's IP
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117 address.
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118 @param origin: The address the message is from
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119 @param recipients: A list of the addresses for which this message
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120 is bound.
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121 @return: The full \"Received\" header string.
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122 """
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123 return "Received:"
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124
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125 def validateTo(self, user):
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126 """
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127 Validate the address for which the message is destined.
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128 @param user: The address to validate.
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129 @return: A Deferred which becomes, or a callable which
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130 takes no arguments and returns an object implementing IMessage.
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131 This will be called and the returned object used to deliver the
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132 message when it arrives.
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133 """
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134 return lambda: SatSmtpMessage(self.host, self.profile)
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135
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136 def validateFrom(self, helo, origin):
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137 """
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138 Validate the address from which the message originates.
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139 @param helo: The argument to the HELO command and the client's IP
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140 address.
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141 @param origin: The address the message is from
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142 @return: origin or a Deferred whose callback will be
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143 passed origin.
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144 """
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145 return origin
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146
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147 class SmtpRealm:
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148 implements(portal.IRealm)
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149
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150 def __init__(self,host):
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151 self.host = host
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152
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153 def requestAvatar(self, avatarID, mind, *interfaces):
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154 debug('requestAvatar')
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155 profile=avatarID.decode('utf-8')
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156 if smtp.IMessageDelivery not in interfaces:
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157 raise NotImplementedError
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158 return smtp.IMessageDelivery, SatSmtpDelivery(self.host,profile), lambda:None
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159
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160 class SatProfileCredentialChecker:
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161 """
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162 This credential checker check against SàT's profile and associated jabber's password
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163 Check if the profile exists, and if the password is OK
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164 Return the profile as avatarId
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165 """
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166 implements(checkers.ICredentialsChecker)
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167 credentialInterfaces = (credentials.IUsernamePassword,
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168 credentials.IUsernameHashedPassword)
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169
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170
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171 def __init__(self, host):
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172 self.host = host
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173
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174 def _cbPasswordMatch(self, matched, profile):
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175 if matched:
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176 return profile.encode('utf-8')
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177 else:
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178 return failure.Failure(cred_error.UnauthorizedLogin())
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179
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180 def requestAvatarId(self, credentials):
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181 profiles = self.host.memory.getProfilesList()
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182 if not credentials.username in profiles:
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183 return defer.fail(cred_error.UnauthorizedLogin())
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184 password = self.host.memory.getParamA("Password", "Connection", profile_key=credentials.username)
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185 return defer.maybeDeferred(
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186 credentials.checkPassword,
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187 password).addCallback(
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188 self._cbPasswordMatch, credentials.username)
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189
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190 class SmtpServerFactory(smtp.SMTPFactory):
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191
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192 def __init__(self, host):
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193 self.protocol = smtp.ESMTP
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194 self.host=host
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195 _portal = portal.Portal(SmtpRealm(self.host))
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196 _portal.registerChecker(SatProfileCredentialChecker(self.host))
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197 smtp.SMTPFactory.__init__(self, _portal)
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198
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199 def startedConnecting(self, connector):
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200 debug (_("SMTP server connection started"))
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201 smtp.SMTPFactory.startedConnecting(self, connector)
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202
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203 def clientConnectionLost(self, connector, reason):
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204 debug (_("SMTP server connection lost (reason: %s)"), reason)
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205 smtp.SMTPFactory.clientConnectionLost(self, connector, reason)
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206
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207 def buildProtocol(self, addr):
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208 p = smtp.SMTPFactory.buildProtocol(self, addr)
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209 # add the challengers from imap4, more secure and complicated challengers are available
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210 p.challengers = {"LOGIN": LOGINCredentials, "PLAIN": PLAINCredentials}
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211 return p
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212