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annotate sat/plugins/plugin_misc_smtp.py @ 3058:0408df45ebe7

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plugin OTR: work around a bad exception raised in potr
author Goffi <goffi@goffi.org>
date Wed, 16 Oct 2019 08:39:52 +0200
parents ab2696e34d29
children
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1 #!/usr/bin/env python3
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2 # -*- coding: utf-8 -*-
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3
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4 # SàT plugin for managing smtp server
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5 # Copyright (C) 2011 Jérôme Poisson (goffi@goffi.org)
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20 from sat.core.i18n import _
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21 from sat.core.constants import Const as C
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22 from sat.core.log import getLogger
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23
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24 log = getLogger(__name__)
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25 from twisted.internet import defer
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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 from twisted.internet import reactor
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34 import sys
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35
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36 from zope.interface import implementer
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37
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38 PLUGIN_INFO = {
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39 C.PI_NAME: "SMTP server Plugin",
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40 C.PI_IMPORT_NAME: "SMTP",
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41 C.PI_TYPE: "Misc",
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42 C.PI_PROTOCOLS: [],
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43 C.PI_DEPENDENCIES: ["Maildir"],
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44 C.PI_MAIN: "SMTP_server",
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45 C.PI_HANDLER: "no",
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46 C.PI_DESCRIPTION: _(
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47 """Create a SMTP server that you can use to send your "normal" type messages"""
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48 ),
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49 }
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51
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52 class SMTP_server(object):
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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="int" constraint="1;65535" />
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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 log.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.updateParams(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 log.info(_("Launching SMTP server on port %d") % port)
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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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77
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78 @implementer(smtp.IMessage)
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79 class SatSmtpMessage(object):
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80
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81 def __init__(self, host, profile):
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82 self.host = host
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83 self.profile = profile
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84 self.message = []
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85
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86 def lineReceived(self, line):
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87 """handle another line"""
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88 self.message.append(line)
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89
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90 def eomReceived(self):
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91 """handle end of message"""
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92 mail = Parser().parsestr("\n".join(self.message))
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93 try:
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94 self.host._sendMessage(
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95 parseaddr(mail["to"].decode("utf-8", "replace"))[1],
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96 mail.get_payload().decode(
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97 "utf-8", "replace"
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98 ), # TODO: manage other charsets
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99 subject=mail["subject"].decode("utf-8", "replace"),
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100 mess_type="normal",
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101 profile_key=self.profile,
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102 )
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103 except:
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104 exc_type, exc_value, exc_traceback = sys.exc_info()
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105 log.error(
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106 _("Can't send message: %s") % exc_value
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107 ) # The email is invalid or incorreclty parsed
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108 return defer.fail()
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109 self.message = None
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110 return defer.succeed(None)
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111
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112 def connectionLost(self):
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113 """handle message truncated"""
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114 raise smtp.SMTPError
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115
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116
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117 @implementer(smtp.IMessageDelivery)
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118 class SatSmtpDelivery(object):
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119
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120 def __init__(self, host, profile):
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121 self.host = host
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122 self.profile = profile
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123
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124 def receivedHeader(self, helo, origin, recipients):
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125 """
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126 Generate the Received header for a message
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127 @param helo: The argument to the HELO command and the client's IP
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128 address.
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129 @param origin: The address the message is from
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130 @param recipients: A list of the addresses for which this message
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131 is bound.
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132 @return: The full \"Received\" header string.
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133 """
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134 return "Received:"
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135
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136 def validateTo(self, user):
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137 """
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138 Validate the address for which the message is destined.
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139 @param user: The address to validate.
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140 @return: A Deferred which becomes, or a callable which
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141 takes no arguments and returns an object implementing IMessage.
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142 This will be called and the returned object used to deliver the
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143 message when it arrives.
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144 """
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145 return lambda: SatSmtpMessage(self.host, self.profile)
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146
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147 def validateFrom(self, helo, origin):
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148 """
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149 Validate the address from which the message originates.
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150 @param helo: The argument to the HELO command and the client's IP
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151 address.
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152 @param origin: The address the message is from
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153 @return: origin or a Deferred whose callback will be
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154 passed origin.
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155 """
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156 return origin
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157
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158
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159 @implementer(portal.IRealm)
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160 class SmtpRealm(object):
260
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161
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162 def __init__(self, host):
260
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163 self.host = host
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164
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165 def requestAvatar(self, avatarID, mind, *interfaces):
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166 log.debug("requestAvatar")
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167 profile = avatarID
260
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168 if smtp.IMessageDelivery not in interfaces:
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169 raise NotImplementedError
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170 return smtp.IMessageDelivery, SatSmtpDelivery(self.host, profile), lambda: None
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171
260
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172
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173 @implementer(checkers.ICredentialsChecker)
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174 class SatProfileCredentialChecker(object):
260
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175 """
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176 This credential checker check against SàT's profile and associated jabber's password
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177 Check if the profile exists, and if the password is OK
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178 Return the profile as avatarId
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179 """
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180
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181 credentialInterfaces = (
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182 credentials.IUsernamePassword,
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183 credentials.IUsernameHashedPassword,
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184 )
260
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185
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186 def __init__(self, host):
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187 self.host = host
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188
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189 def _cbPasswordMatch(self, matched, profile):
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190 if matched:
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191 return profile.encode("utf-8")
260
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192 else:
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193 return failure.Failure(cred_error.UnauthorizedLogin())
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194
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195 def requestAvatarId(self, credentials):
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196 profiles = self.host.memory.getProfilesList()
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197 if not credentials.username in profiles:
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198 return defer.fail(cred_error.UnauthorizedLogin())
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199 d = self.host.memory.asyncGetParamA(
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200 "Password", "Connection", profile_key=credentials.username
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201 )
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202 d.addCallback(credentials.checkPassword)
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203 d.addCallback(self._cbPasswordMatch, credentials.username)
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204 return d
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205
260
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206
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207 class SmtpServerFactory(smtp.SMTPFactory):
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208 def __init__(self, host):
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209 self.protocol = smtp.ESMTP
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210 self.host = host
260
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211 _portal = portal.Portal(SmtpRealm(self.host))
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212 _portal.registerChecker(SatProfileCredentialChecker(self.host))
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213 smtp.SMTPFactory.__init__(self, _portal)
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214
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215 def startedConnecting(self, connector):
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216 log.debug(_("SMTP server connection started"))
260
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217 smtp.SMTPFactory.startedConnecting(self, connector)
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218
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219 def clientConnectionLost(self, connector, reason):
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220 log.debug(_("SMTP server connection lost (reason: %s)"), reason)
260
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221 smtp.SMTPFactory.clientConnectionLost(self, connector, reason)
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222
260
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223 def buildProtocol(self, addr):
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224 p = smtp.SMTPFactory.buildProtocol(self, addr)
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225 # add the challengers from imap4, more secure and complicated challengers are available
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226 p.challengers = {"LOGIN": LOGINCredentials, "PLAIN": PLAINCredentials}
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227 return p