/usr/lib/python2.7/dist-packages/bzrlib/smtp_connection.py is in python-bzrlib 2.7.0-2ubuntu3.1.
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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 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 | # Copyright (C) 2007 Canonical Ltd
#
# 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
"""A convenience class around smtplib."""
from __future__ import absolute_import
from email import Utils
import errno
import smtplib
import socket
from bzrlib import (
config,
osutils,
)
from bzrlib.errors import (
NoDestinationAddress,
SMTPError,
DefaultSMTPConnectionRefused,
SMTPConnectionRefused,
)
smtp_password = config.Option('smtp_password', default=None,
help='''\
Password to use for authentication to SMTP server.
''')
smtp_server = config.Option('smtp_server', default=None,
help='''\
Hostname of the SMTP server to use for sending email.
''')
smtp_username = config.Option('smtp_username', default=None,
help='''\
Username to use for authentication to SMTP server.
''')
class SMTPConnection(object):
"""Connect to an SMTP server and send an email.
This is a gateway between bzrlib.config.Config and smtplib.SMTP. It
understands the basic bzr SMTP configuration information: smtp_server,
smtp_username, and smtp_password.
"""
_default_smtp_server = 'localhost'
def __init__(self, config, _smtp_factory=None):
self._smtp_factory = _smtp_factory
if self._smtp_factory is None:
self._smtp_factory = smtplib.SMTP
self._config = config
self._config_smtp_server = config.get('smtp_server')
self._smtp_server = self._config_smtp_server
if self._smtp_server is None:
self._smtp_server = self._default_smtp_server
self._smtp_username = config.get('smtp_username')
self._smtp_password = config.get('smtp_password')
self._connection = None
def _connect(self):
"""If we haven't connected, connect and authenticate."""
if self._connection is not None:
return
self._create_connection()
# FIXME: _authenticate() should only be called when the server has
# refused unauthenticated access, so it can safely try to authenticate
# with the default username. JRV20090407
self._authenticate()
def _create_connection(self):
"""Create an SMTP connection."""
self._connection = self._smtp_factory()
try:
self._connection.connect(self._smtp_server)
except socket.error, e:
if e.args[0] == errno.ECONNREFUSED:
if self._config_smtp_server is None:
raise DefaultSMTPConnectionRefused(socket.error,
self._smtp_server)
else:
raise SMTPConnectionRefused(socket.error,
self._smtp_server)
else:
raise
# Say EHLO (falling back to HELO) to query the server's features.
code, resp = self._connection.ehlo()
if not (200 <= code <= 299):
code, resp = self._connection.helo()
if not (200 <= code <= 299):
raise SMTPError("server refused HELO: %d %s" % (code, resp))
# Use TLS if the server advertised it:
if self._connection.has_extn("starttls"):
code, resp = self._connection.starttls()
if not (200 <= code <= 299):
raise SMTPError("server refused STARTTLS: %d %s" % (code, resp))
# Say EHLO again, to check for newly revealed features
code, resp = self._connection.ehlo()
if not (200 <= code <= 299):
raise SMTPError("server refused EHLO: %d %s" % (code, resp))
def _authenticate(self):
"""If necessary authenticate yourself to the server."""
auth = config.AuthenticationConfig()
if self._smtp_username is None:
# FIXME: Since _authenticate gets called even when no authentication
# is necessary, it's not possible to use the default username
# here yet.
self._smtp_username = auth.get_user('smtp', self._smtp_server)
if self._smtp_username is None:
return
if self._smtp_password is None:
self._smtp_password = auth.get_password(
'smtp', self._smtp_server, self._smtp_username)
# smtplib requires that the username and password be byte
# strings. The CRAM-MD5 spec doesn't give any guidance on
# encodings, but the SASL PLAIN spec says UTF-8, so that's
# what we'll use.
username = osutils.safe_utf8(self._smtp_username)
password = osutils.safe_utf8(self._smtp_password)
self._connection.login(username, password)
@staticmethod
def get_message_addresses(message):
"""Get the origin and destination addresses of a message.
:param message: A message object supporting get() to access its
headers, like email.Message or bzrlib.email_message.EmailMessage.
:return: A pair (from_email, to_emails), where from_email is the email
address in the From header, and to_emails a list of all the
addresses in the To, Cc, and Bcc headers.
"""
from_email = Utils.parseaddr(message.get('From', None))[1]
to_full_addresses = []
for header in ['To', 'Cc', 'Bcc']:
value = message.get(header, None)
if value:
to_full_addresses.append(value)
to_emails = [ pair[1] for pair in
Utils.getaddresses(to_full_addresses) ]
return from_email, to_emails
def send_email(self, message):
"""Send an email message.
The message will be sent to all addresses in the To, Cc and Bcc
headers.
:param message: An email.Message or email.MIMEMultipart object.
:return: None
"""
from_email, to_emails = self.get_message_addresses(message)
if not to_emails:
raise NoDestinationAddress
try:
self._connect()
self._connection.sendmail(from_email, to_emails,
message.as_string())
except smtplib.SMTPRecipientsRefused, e:
raise SMTPError('server refused recipient: %d %s' %
e.recipients.values()[0])
except smtplib.SMTPResponseException, e:
raise SMTPError('%d %s' % (e.smtp_code, e.smtp_error))
except smtplib.SMTPException, e:
raise SMTPError(str(e))
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