1 # -*- coding: utf-8 -*-
2 ##############################################################################
4 # OpenERP, Open Source Management Solution
5 # Copyright (C) 2011-2012 OpenERP S.A (<http://www.openerp.com>)
7 # This program is free software: you can redistribute it and/or modify
8 # it under the terms of the GNU Affero General Public License as
9 # published by the Free Software Foundation, either version 3 of the
10 # License, or (at your option) any later version
12 # This program is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU Affero General Public License for more details
17 # You should have received a copy of the GNU Affero General Public License
18 # along with this program. If not, see <http://www.gnu.org/licenses/>
20 ##############################################################################
22 from email.MIMEText import MIMEText
23 from email.MIMEBase import MIMEBase
24 from email.MIMEMultipart import MIMEMultipart
25 from email.Charset import Charset
26 from email.Header import Header
27 from email.utils import formatdate, make_msgid, COMMASPACE, getaddresses, formataddr
28 from email import Encoders
34 from openerp import SUPERUSER_ID
35 from openerp.osv import osv, fields
36 from openerp.tools.translate import _
37 from openerp.tools import html2text
38 import openerp.tools as tools
40 # ustr was originally from tools.misc.
41 # it is moved to loglevels until we refactor tools.
42 from openerp.loglevels import ustr
44 _logger = logging.getLogger(__name__)
46 class MailDeliveryException(osv.except_osv):
47 """Specific exception subclass for mail delivery errors"""
48 def __init__(self, name, value):
49 super(MailDeliveryException, self).__init__(name, value)
51 class WriteToLogger(object):
52 """debugging helper: behave as a fd and pipe to logger at the given level"""
53 def __init__(self, logger, level=logging.DEBUG):
58 self.logger.log(self.level, s)
61 def try_coerce_ascii(string_utf8):
62 """Attempts to decode the given utf8-encoded string
63 as ASCII after coercing it to UTF-8, then return
64 the confirmed 7-bit ASCII string.
66 If the process fails (because the string
67 contains non-ASCII characters) returns ``None``.
70 string_utf8.decode('ascii')
71 except UnicodeDecodeError:
75 def encode_header(header_text):
76 """Returns an appropriate representation of the given header value,
77 suitable for direct assignment as a header value in an
78 email.message.Message. RFC2822 assumes that headers contain
79 only 7-bit characters, so we ensure it is the case, using
80 RFC2047 encoding when needed.
82 :param header_text: unicode or utf-8 encoded string with header value
83 :rtype: string | email.header.Header
84 :return: if ``header_text`` represents a plain ASCII string,
85 return the same 7-bit string, otherwise returns an email.header.Header
86 that will perform the appropriate RFC2047 encoding of
89 if not header_text: return ""
90 # convert anything to utf-8, suitable for testing ASCIIness, as 7-bit chars are
91 # encoded as ASCII in utf-8
92 header_text_utf8 = tools.ustr(header_text).encode('utf-8')
93 header_text_ascii = try_coerce_ascii(header_text_utf8)
94 # if this header contains non-ASCII characters,
95 # we'll need to wrap it up in a message.header.Header
96 # that will take care of RFC2047-encoding it as
98 return header_text_ascii if header_text_ascii\
99 else Header(header_text_utf8, 'utf-8')
101 def encode_header_param(param_text):
102 """Returns an appropriate RFC2047 encoded representation of the given
103 header parameter value, suitable for direct assignation as the
104 param value (e.g. via Message.set_param() or Message.add_header())
105 RFC2822 assumes that headers contain only 7-bit characters,
106 so we ensure it is the case, using RFC2047 encoding when needed.
108 :param param_text: unicode or utf-8 encoded string with header value
110 :return: if ``param_text`` represents a plain ASCII string,
111 return the same 7-bit string, otherwise returns an
112 ASCII string containing the RFC2047 encoded text.
114 # For details see the encode_header() method that uses the same logic
115 if not param_text: return ""
116 param_text_utf8 = tools.ustr(param_text).encode('utf-8')
117 param_text_ascii = try_coerce_ascii(param_text_utf8)
118 return param_text_ascii if param_text_ascii\
119 else Charset('utf8').header_encode(param_text_utf8)
121 # TODO master, remove me, no longer used internaly
122 name_with_email_pattern = re.compile(r'("[^<@>]+")\s*<([^ ,<@]+@[^> ,]+)>')
123 address_pattern = re.compile(r'([^ ,<@]+@[^> ,]+)')
125 def extract_rfc2822_addresses(text):
126 """Returns a list of valid RFC2822 addresses
127 that can be found in ``source``, ignoring
128 malformed ones and non-ASCII ones.
130 if not text: return []
131 candidates = address_pattern.findall(tools.ustr(text).encode('utf-8'))
132 return filter(try_coerce_ascii, candidates)
134 def encode_rfc2822_address_header(header_text):
135 """If ``header_text`` contains non-ASCII characters,
136 attempts to locate patterns of the form
137 ``"Name" <address@domain>`` and replace the
138 ``"Name"`` portion by the RFC2047-encoded
139 version, preserving the address part untouched.
141 def encode_addr(addr):
143 if not try_coerce_ascii(name):
144 name = str(Header(name, 'utf-8'))
145 return formataddr((name, email))
147 addresses = getaddresses([tools.ustr(header_text).encode('utf-8')])
148 return COMMASPACE.join(map(encode_addr, addresses))
151 class ir_mail_server(osv.osv):
152 """Represents an SMTP server, able to send outgoing emails, with SSL and TLS capabilities."""
153 _name = "ir.mail_server"
155 NO_VALID_RECIPIENT = ("At least one valid recipient address should be "
156 "specified for outgoing emails (To/Cc/Bcc)")
159 'name': fields.char('Description', size=64, required=True, select=True),
160 'smtp_host': fields.char('SMTP Server', size=128, required=True, help="Hostname or IP of SMTP server"),
161 'smtp_port': fields.integer('SMTP Port', size=5, required=True, help="SMTP Port. Usually 465 for SSL, and 25 or 587 for other cases."),
162 'smtp_user': fields.char('Username', size=64, help="Optional username for SMTP authentication"),
163 'smtp_pass': fields.char('Password', size=64, help="Optional password for SMTP authentication"),
164 'smtp_encryption': fields.selection([('none','None'),
165 ('starttls','TLS (STARTTLS)'),
167 string='Connection Security', required=True,
168 help="Choose the connection encryption scheme:\n"
169 "- None: SMTP sessions are done in cleartext.\n"
170 "- TLS (STARTTLS): TLS encryption is requested at start of SMTP session (Recommended)\n"
171 "- SSL/TLS: SMTP sessions are encrypted with SSL/TLS through a dedicated port (default: 465)"),
172 'smtp_debug': fields.boolean('Debugging', help="If enabled, the full output of SMTP sessions will "
173 "be written to the server log at DEBUG level"
174 "(this is very verbose and may include confidential info!)"),
175 'sequence': fields.integer('Priority', help="When no specific mail server is requested for a mail, the highest priority one "
176 "is used. Default priority is 10 (smaller number = higher priority)"),
177 'active': fields.boolean('Active')
184 'smtp_encryption': 'none',
187 def __init__(self, *args, **kwargs):
188 # Make sure we pipe the smtplib outputs to our own DEBUG logger
189 if not isinstance(smtplib.stderr, WriteToLogger):
190 logpiper = WriteToLogger(_logger)
191 smtplib.stderr = logpiper
192 smtplib.stdout = logpiper
193 super(ir_mail_server, self).__init__(*args,**kwargs)
195 def name_get(self, cr, uid, ids, context=None):
196 return [(a["id"], "(%s)" % (a['name'])) for a in self.read(cr, uid, ids, ['name'], context=context)]
198 def test_smtp_connection(self, cr, uid, ids, context=None):
199 for smtp_server in self.browse(cr, uid, ids, context=context):
202 smtp = self.connect(smtp_server.smtp_host, smtp_server.smtp_port, user=smtp_server.smtp_user,
203 password=smtp_server.smtp_pass, encryption=smtp_server.smtp_encryption,
204 smtp_debug=smtp_server.smtp_debug)
206 raise osv.except_osv(_("Connection Test Failed!"), _("Here is what we got instead:\n %s") % tools.ustr(e))
211 # ignored, just a consequence of the previous exception
213 raise osv.except_osv(_("Connection Test Succeeded!"), _("Everything seems properly set up!"))
215 def connect(self, host, port, user=None, password=None, encryption=False, smtp_debug=False):
216 """Returns a new SMTP connection to the give SMTP server, authenticated
217 with ``user`` and ``password`` if provided, and encrypted as requested
218 by the ``encryption`` parameter.
220 :param host: host or IP of SMTP server to connect to
221 :param int port: SMTP port to connect to
222 :param user: optional username to authenticate with
223 :param password: optional password to authenticate with
224 :param string encryption: optional, ``'ssl'`` | ``'starttls'``
225 :param bool smtp_debug: toggle debugging of SMTP sessions (all i/o
226 will be output in logs)
228 if encryption == 'ssl':
229 if not 'SMTP_SSL' in smtplib.__all__:
230 raise osv.except_osv(
231 _("SMTP-over-SSL mode unavailable"),
232 _("Your OpenERP Server does not support SMTP-over-SSL. You could use STARTTLS instead."
233 "If SSL is needed, an upgrade to Python 2.6 on the server-side should do the trick."))
234 connection = smtplib.SMTP_SSL(host, port)
236 connection = smtplib.SMTP(host, port)
237 connection.set_debuglevel(smtp_debug)
238 if encryption == 'starttls':
239 # starttls() will perform ehlo() if needed first
240 # and will discard the previous list of services
241 # after successfully performing STARTTLS command,
242 # (as per RFC 3207) so for example any AUTH
243 # capability that appears only on encrypted channels
244 # will be correctly detected for next step
245 connection.starttls()
248 # Attempt authentication - will raise if AUTH service not supported
249 # The user/password must be converted to bytestrings in order to be usable for
250 # certain hashing schemes, like HMAC.
251 # See also bug #597143 and python issue #5285
252 user = tools.ustr(user).encode('utf-8')
253 password = tools.ustr(password).encode('utf-8')
254 connection.login(user, password)
257 def build_email(self, email_from, email_to, subject, body, email_cc=None, email_bcc=None, reply_to=False,
258 attachments=None, message_id=None, references=None, object_id=False, subtype='plain', headers=None,
259 body_alternative=None, subtype_alternative='plain'):
260 """Constructs an RFC2822 email.message.Message object based on the keyword arguments passed, and returns it.
262 :param string email_from: sender email address
263 :param list email_to: list of recipient addresses (to be joined with commas)
264 :param string subject: email subject (no pre-encoding/quoting necessary)
265 :param string body: email body, of the type ``subtype`` (by default, plaintext).
266 If html subtype is used, the message will be automatically converted
267 to plaintext and wrapped in multipart/alternative, unless an explicit
268 ``body_alternative`` version is passed.
269 :param string body_alternative: optional alternative body, of the type specified in ``subtype_alternative``
270 :param string reply_to: optional value of Reply-To header
271 :param string object_id: optional tracking identifier, to be included in the message-id for
272 recognizing replies. Suggested format for object-id is "res_id-model",
273 e.g. "12345-crm.lead".
274 :param string subtype: optional mime subtype for the text body (usually 'plain' or 'html'),
275 must match the format of the ``body`` parameter. Default is 'plain',
276 making the content part of the mail "text/plain".
277 :param string subtype_alternative: optional mime subtype of ``body_alternative`` (usually 'plain'
278 or 'html'). Default is 'plain'.
279 :param list attachments: list of (filename, filecontents) pairs, where filecontents is a string
280 containing the bytes of the attachment
281 :param list email_cc: optional list of string values for CC header (to be joined with commas)
282 :param list email_bcc: optional list of string values for BCC header (to be joined with commas)
283 :param dict headers: optional map of headers to set on the outgoing mail (may override the
284 other headers, including Subject, Reply-To, Message-Id, etc.)
285 :rtype: email.message.Message (usually MIMEMultipart)
286 :return: the new RFC2822 email message
288 email_from = email_from or tools.config.get('email_from')
289 assert email_from, "You must either provide a sender address explicitly or configure "\
290 "a global sender address in the server configuration or with the "\
291 "--email-from startup parameter."
293 # Note: we must force all strings to to 8-bit utf-8 when crafting message,
294 # or use encode_header() for headers, which does it automatically.
296 headers = headers or {} # need valid dict later
298 if not email_cc: email_cc = []
299 if not email_bcc: email_bcc = []
300 if not body: body = u''
302 email_body_utf8 = ustr(body).encode('utf-8')
303 email_text_part = MIMEText(email_body_utf8, _subtype=subtype, _charset='utf-8')
304 msg = MIMEMultipart()
308 message_id = tools.generate_tracking_message_id(object_id)
310 message_id = make_msgid()
311 msg['Message-Id'] = encode_header(message_id)
313 msg['references'] = encode_header(references)
314 msg['Subject'] = encode_header(subject)
315 msg['From'] = encode_rfc2822_address_header(email_from)
318 msg['Reply-To'] = encode_rfc2822_address_header(reply_to)
320 msg['Reply-To'] = msg['From']
321 msg['To'] = encode_rfc2822_address_header(COMMASPACE.join(email_to))
323 msg['Cc'] = encode_rfc2822_address_header(COMMASPACE.join(email_cc))
325 msg['Bcc'] = encode_rfc2822_address_header(COMMASPACE.join(email_bcc))
326 msg['Date'] = formatdate()
327 # Custom headers may override normal headers or provide additional ones
328 for key, value in headers.iteritems():
329 msg[ustr(key).encode('utf-8')] = encode_header(value)
331 if subtype == 'html' and not body_alternative and html2text:
332 # Always provide alternative text body ourselves if possible.
333 text_utf8 = tools.html2text(email_body_utf8.decode('utf-8')).encode('utf-8')
334 alternative_part = MIMEMultipart(_subtype="alternative")
335 alternative_part.attach(MIMEText(text_utf8, _charset='utf-8', _subtype='plain'))
336 alternative_part.attach(email_text_part)
337 msg.attach(alternative_part)
338 elif body_alternative:
339 # Include both alternatives, as specified, within a multipart/alternative part
340 alternative_part = MIMEMultipart(_subtype="alternative")
341 body_alternative_utf8 = ustr(body_alternative).encode('utf-8')
342 alternative_body_part = MIMEText(body_alternative_utf8, _subtype=subtype_alternative, _charset='utf-8')
343 alternative_part.attach(alternative_body_part)
344 alternative_part.attach(email_text_part)
345 msg.attach(alternative_part)
347 msg.attach(email_text_part)
350 for (fname, fcontent) in attachments:
351 filename_rfc2047 = encode_header_param(fname)
352 part = MIMEBase('application', "octet-stream")
354 # The default RFC2231 encoding of Message.add_header() works in Thunderbird but not GMail
355 # so we fix it by using RFC2047 encoding for the filename instead.
356 part.set_param('name', filename_rfc2047)
357 part.add_header('Content-Disposition', 'attachment', filename=filename_rfc2047)
359 part.set_payload(fcontent)
360 Encoders.encode_base64(part)
364 def send_email(self, cr, uid, message, mail_server_id=None, smtp_server=None, smtp_port=None,
365 smtp_user=None, smtp_password=None, smtp_encryption=None, smtp_debug=False,
367 """Sends an email directly (no queuing).
369 No retries are done, the caller should handle MailDeliveryException in order to ensure that
370 the mail is never lost.
372 If the mail_server_id is provided, sends using this mail server, ignoring other smtp_* arguments.
373 If mail_server_id is None and smtp_server is None, use the default mail server (highest priority).
374 If mail_server_id is None and smtp_server is not None, use the provided smtp_* arguments.
375 If both mail_server_id and smtp_server are None, look for an 'smtp_server' value in server config,
376 and fails if not found.
378 :param message: the email.message.Message to send. The envelope sender will be extracted from the
379 ``Return-Path`` or ``From`` headers. The envelope recipients will be
380 extracted from the combined list of ``To``, ``CC`` and ``BCC`` headers.
381 :param mail_server_id: optional id of ir.mail_server to use for sending. overrides other smtp_* arguments.
382 :param smtp_server: optional hostname of SMTP server to use
383 :param smtp_encryption: optional TLS mode, one of 'none', 'starttls' or 'ssl' (see ir.mail_server fields for explanation)
384 :param smtp_port: optional SMTP port, if mail_server_id is not passed
385 :param smtp_user: optional SMTP user, if mail_server_id is not passed
386 :param smtp_password: optional SMTP password to use, if mail_server_id is not passed
387 :param smtp_debug: optional SMTP debug flag, if mail_server_id is not passed
388 :return: the Message-ID of the message that was just sent, if successfully sent, otherwise raises
389 MailDeliveryException and logs root cause.
391 smtp_from = message['Return-Path'] or message['From']
392 assert smtp_from, "The Return-Path or From header is required for any outbound email"
394 # The email's "Envelope From" (Return-Path), and all recipient addresses must only contain ASCII characters.
395 from_rfc2822 = extract_rfc2822_addresses(smtp_from)
396 assert from_rfc2822, ("Malformed 'Return-Path' or 'From' address: %r - "
397 "It should contain one valid plain ASCII email") % smtp_from
398 # use last extracted email, to support rarities like 'Support@MyComp <support@mycompany.com>'
399 smtp_from = from_rfc2822[-1]
400 email_to = message['To']
401 email_cc = message['Cc']
402 email_bcc = message['Bcc']
403 smtp_to_list = filter(None, tools.flatten(map(extract_rfc2822_addresses,[email_to, email_cc, email_bcc])))
404 assert smtp_to_list, self.NO_VALID_RECIPIENT
406 # Do not actually send emails in testing mode!
407 if getattr(threading.currentThread(), 'testing', False):
408 _logger.log(logging.TEST, "skip sending email in test mode")
409 return message['Message-Id']
411 # Get SMTP Server Details from Mail Server
414 mail_server = self.browse(cr, SUPERUSER_ID, mail_server_id)
415 elif not smtp_server:
416 mail_server_ids = self.search(cr, SUPERUSER_ID, [], order='sequence', limit=1)
418 mail_server = self.browse(cr, SUPERUSER_ID, mail_server_ids[0])
421 smtp_server = mail_server.smtp_host
422 smtp_user = mail_server.smtp_user
423 smtp_password = mail_server.smtp_pass
424 smtp_port = mail_server.smtp_port
425 smtp_encryption = mail_server.smtp_encryption
426 smtp_debug = smtp_debug or mail_server.smtp_debug
428 # we were passed an explicit smtp_server or nothing at all
429 smtp_server = smtp_server or tools.config.get('smtp_server')
430 smtp_port = tools.config.get('smtp_port', 25) if smtp_port is None else smtp_port
431 smtp_user = smtp_user or tools.config.get('smtp_user')
432 smtp_password = smtp_password or tools.config.get('smtp_password')
433 if smtp_encryption is None and tools.config.get('smtp_ssl'):
434 smtp_encryption = 'starttls' # STARTTLS is the new meaning of the smtp_ssl flag as of v7.0
437 raise osv.except_osv(
438 _("Missing SMTP Server"),
439 _("Please define at least one SMTP server, or provide the SMTP parameters explicitly."))
442 message_id = message['Message-Id']
444 # Add email in Maildir if smtp_server contains maildir.
445 if smtp_server.startswith('maildir:/'):
446 from mailbox import Maildir
447 maildir_path = smtp_server[8:]
448 mdir = Maildir(maildir_path, factory=None, create = True)
449 mdir.add(message.as_string(True))
453 smtp = self.connect(smtp_server, smtp_port, smtp_user, smtp_password, smtp_encryption or False, smtp_debug)
454 smtp.sendmail(smtp_from, smtp_to_list, message.as_string())
457 # Close Connection of SMTP Server
460 # ignored, just a consequence of the previous exception
463 msg = _("Mail delivery failed via SMTP server '%s'.\n%s: %s") % (tools.ustr(smtp_server),
464 e.__class__.__name__,
466 _logger.exception(msg)
467 raise MailDeliveryException(_("Mail delivery failed"), msg)
470 def on_change_encryption(self, cr, uid, ids, smtp_encryption):
471 if smtp_encryption == 'ssl':
472 result = {'value': {'smtp_port': 465}}
473 if not 'SMTP_SSL' in smtplib.__all__:
474 result['warning'] = {'title': _('Warning'),
475 'message': _('Your server does not seem to support SSL, you may want to try STARTTLS instead')}
477 result = {'value': {'smtp_port': 25}}
480 # vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4: