mail.py
author Julien Cristau <julien.cristau@logilab.fr>
Mon, 28 Apr 2014 11:20:26 +0200
changeset 9708 b36bc18f6ef7
parent 9362 2f0129d17fa9
child 10326 03d98646d57c
permissions -rw-r--r--
[migration] move 'entities' table changes from 3.19.0 to bootstrap script The 'mtime' and 'source' columns need to go away before we attempt to do anything else with the repo, otherwise any addition of an entity is going to explode.
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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# copyright 2003-2012 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
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# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
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#
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# This file is part of CubicWeb.
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#
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# CubicWeb is free software: you can redistribute it and/or modify it under the
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# terms of the GNU Lesser General Public License as published by the Free
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# Software Foundation, either version 2.1 of the License, or (at your option)
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# any later version.
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#
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# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Lesser General Public License along
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# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
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"""Common utilies to format / send emails."""
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__docformat__ = "restructuredtext en"
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from base64 import b64encode, b64decode
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from time import time
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from email.mime.multipart import MIMEMultipart
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from email.mime.text import MIMEText
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from email.mime.image import MIMEImage
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from email.header import Header
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from socket import gethostname
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def header(ustring):
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    return Header(ustring.encode('UTF-8'), 'UTF-8')
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def addrheader(uaddr, uname=None):
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    # even if an email address should be ascii, encode it using utf8 since
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    # automatic tests may generate non ascii email address
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    addr = uaddr.encode('UTF-8')
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    if uname:
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        return '%s <%s>' % (header(uname).encode(), addr)
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    return addr
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def construct_message_id(appid, eid, withtimestamp=True):
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    if withtimestamp:
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        addrpart = 'eid=%s&timestamp=%.10f' % (eid, time())
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    else:
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        addrpart = 'eid=%s' % eid
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    # we don't want any equal sign nor trailing newlines
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    leftpart = b64encode(addrpart, '.-').rstrip().rstrip('=')
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    return '<%s@%s.%s>' % (leftpart, appid, gethostname())
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def parse_message_id(msgid, appid):
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    if msgid[0] == '<':
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        msgid = msgid[1:]
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    if msgid[-1] == '>':
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        msgid = msgid[:-1]
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    try:
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        values, qualif = msgid.split('@')
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        padding = len(values) % 4
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        values = b64decode(str(values + '='*padding), '.-')
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        values = dict(v.split('=') for v in values.split('&'))
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        fromappid, host = qualif.split('.', 1)
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    except Exception:
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        return None
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    if appid != fromappid or host != gethostname():
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        return None
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    return values
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0
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def format_mail(uinfo, to_addrs, content, subject="",
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                cc_addrs=(), msgid=None, references=(), config=None):
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    """Sends an Email to 'e_addr' with content 'content', and subject 'subject'
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    to_addrs and cc_addrs are expected to be a list of email address without
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    name
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    """
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    assert type(content) is unicode, repr(content)
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    msg = MIMEText(content.encode('UTF-8'), 'plain', 'UTF-8')
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    # safety: keep only the first newline
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    try:
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        subject = subject.splitlines()[0]
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        msg['Subject'] = header(subject)
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    except IndexError:
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        pass # no subject
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    if uinfo.get('email'):
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        email = uinfo['email']
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    elif config and config['sender-addr']:
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        email = unicode(config['sender-addr'])
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    else:
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        email = u''
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    if uinfo.get('name'):
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        name = uinfo['name']
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    elif config and config['sender-name']:
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        name = unicode(config['sender-name'])
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    else:
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        name = u''
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    msg['From'] = addrheader(email, name)
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    if config and config['sender-addr'] and config['sender-addr'] != email:
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        appaddr = addrheader(config['sender-addr'], config['sender-name'])
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        msg['Reply-to'] = '%s, %s' % (msg['From'], appaddr)
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    elif email:
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        msg['Reply-to'] = msg['From']
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    if config is not None:
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        msg['X-CW'] = config.appid
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    unique_addrs = lambda addrs: sorted(set(addr for addr in addrs if addr is not None))
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    msg['To'] = ', '.join(addrheader(addr) for addr in unique_addrs(to_addrs))
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    if cc_addrs:
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        msg['Cc'] = ', '.join(addrheader(addr) for addr in unique_addrs(cc_addrs))
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    if msgid:
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        msg['Message-id'] = msgid
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    if references:
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        msg['References'] = ', '.join(references)
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    return msg
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class HtmlEmail(MIMEMultipart):
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    def __init__(self, subject, textcontent, htmlcontent,
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                 sendermail=None, sendername=None, recipients=None, ccrecipients=None):
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        MIMEMultipart.__init__(self, 'related')
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        self['Subject'] = header(subject)
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        self.preamble = 'This is a multi-part message in MIME format.'
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        # Attach alternative text message
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        alternative = MIMEMultipart('alternative')
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        self.attach(alternative)
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        msgtext = MIMEText(textcontent.encode('UTF-8'), 'plain', 'UTF-8')
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        alternative.attach(msgtext)
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        # Attach html message
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        msghtml = MIMEText(htmlcontent.encode('UTF-8'), 'html', 'UTF-8')
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        alternative.attach(msghtml)
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        if sendermail or sendername:
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            self['From'] = addrheader(sendermail, sendername)
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        if recipients:
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            self['To'] = ', '.join(addrheader(addr) for addr in recipients if addr is not None)
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        if ccrecipients:
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            self['Cc'] = ', '.join(addrheader(addr) for addr in ccrecipients if addr is not None)
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    def attach_image(self, data, htmlId):
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        image = MIMEImage(data)
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        image.add_header('Content-ID', '<%s>' % htmlId)
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        self.attach(image)