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Fixed #12422 -- Don't override global email charset behavior for utf-8. 

Thanks simonb for the report, Claude Paroz and Susan Tan for their work
on a fix.
This commit is contained in:
Ramiro Morales 2013-08-19 20:04:50 -03:00
parent b065aeb17f
commit ececbe77ff
2 changed files with 99 additions and 12 deletions
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14
django/core/mail/message.py
View File

@ -22,7 +22,8 @@ from django.utils import six
# Don't BASE64-encode UTF-8 messages so that we avoid unwanted attention from
# some spam filters.
Charset.add_charset('utf-8', Charset.SHORTEST, None, 'utf-8')
utf8_charset = Charset.Charset('utf-8')
utf8_charset.body_encoding = None # Python defaults to BASE64
# Default MIME type to use on attachments (if it is not explicitly given
# and cannot be guessed).
@ -145,7 +146,16 @@ class SafeMIMEText(MIMEText):
def __init__(self, text, subtype, charset):
self.encoding = charset
MIMEText.__init__(self, text, subtype, charset)
if charset == 'utf-8':
# Unfortunately, Python doesn't support setting a Charset instance
# as MIMEText init parameter (http://bugs.python.org/issue16324).
# We do it manually and trigger re-encoding of the payload.
MIMEText.__init__(self, text, subtype, None)
del self['Content-Transfer-Encoding']
self.set_payload(text, utf8_charset)
self.replace_header('Content-Type', 'text/%s; charset="%s"' % (subtype, charset))
else:
MIMEText.__init__(self, text, subtype, charset)
def __setitem__(self, name, val):
name, val = forbid_multi_line_headers(name, val, self.encoding)

97
tests/mail/tests.py
View File

@ -3,6 +3,7 @@ from __future__ import unicode_literals
import asyncore
import email
from email.mime.text import MIMEText
import os
import shutil
import smtpd
@ -20,11 +21,32 @@ from django.core.mail.message import BadHeaderError
from django.test import TestCase
from django.test.utils import override_settings
from django.utils.encoding import force_str, force_text
from django.utils.six import PY3, StringIO
from django.utils.six import PY3, StringIO, string_types
from django.utils.translation import ugettext_lazy
class MailTests(TestCase):
class HeadersCheckMixin(object):
def assertMessageHasHeaders(self, message, headers):
"""
Check that :param message: has all :param headers: headers.
:param message: can be an instance of an email.Message subclass or a
string with the contens of an email message.
:param headers: should be a set of (header-name, header-value) tuples.
"""
if isinstance(message, string_types):
just_headers = message.split('\n\n', 1)[0]
hlist = just_headers.split('\n')
pairs = [hl.split(':', 1) for hl in hlist]
msg_headers = {(n, v.lstrip()) for (n, v) in pairs}
else:
msg_headers = set(message.items())
self.assertTrue(headers.issubset(msg_headers), msg='Message is missing '
'the following headers: %s' % (headers - msg_headers),)
class MailTests(HeadersCheckMixin, TestCase):
"""
Non-backend specific tests.
"""
@ -93,7 +115,7 @@ class MailTests(TestCase):
headers = {"date": "Fri, 09 Nov 2001 01:08:47 -0000", "Message-ID": "foo"}
email = EmailMessage('subject', 'content', 'from@example.com', ['to@example.com'], headers=headers)
self.assertEqual(sorted(email.message().items()), [
self.assertMessageHasHeaders(email.message(), {
('Content-Transfer-Encoding', '7bit'),
('Content-Type', 'text/plain; charset="utf-8"'),
('From', 'from@example.com'),
@ -102,7 +124,7 @@ class MailTests(TestCase):
('Subject', 'subject'),
('To', 'to@example.com'),
('date', 'Fri, 09 Nov 2001 01:08:47 -0000'),
])
})
def test_from_header(self):
"""
@ -184,7 +206,13 @@ class MailTests(TestCase):
email = EmailMessage('Subject', 'Firstname Sürname is a great guy.', 'from@example.com', ['other@example.com'])
email.encoding = 'iso-8859-1'
message = email.message()
self.assertTrue(message.as_string().startswith('Content-Type: text/plain; charset="iso-8859-1"\nMIME-Version: 1.0\nContent-Transfer-Encoding: quoted-printable\nSubject: Subject\nFrom: from@example.com\nTo: other@example.com'))
self.assertMessageHasHeaders(message, {
('MIME-Version', '1.0'),
('Content-Type', 'text/plain; charset="iso-8859-1"'),
('Content-Transfer-Encoding', 'quoted-printable'),
('Subject', 'Subject'),
('From', 'from@example.com'),
('To', 'other@example.com')})
self.assertEqual(message.get_payload(), 'Firstname S=FCrname is a great guy.')
# Make sure MIME attachments also works correctly with other encodings than utf-8
@ -193,8 +221,18 @@ class MailTests(TestCase):
msg = EmailMultiAlternatives('Subject', text_content, 'from@example.com', ['to@example.com'])
msg.encoding = 'iso-8859-1'
msg.attach_alternative(html_content, "text/html")
self.assertEqual(msg.message().get_payload(0).as_string(), 'Content-Type: text/plain; charset="iso-8859-1"\nMIME-Version: 1.0\nContent-Transfer-Encoding: quoted-printable\n\nFirstname S=FCrname is a great guy.')
self.assertEqual(msg.message().get_payload(1).as_string(), 'Content-Type: text/html; charset="iso-8859-1"\nMIME-Version: 1.0\nContent-Transfer-Encoding: quoted-printable\n\n<p>Firstname S=FCrname is a <strong>great</strong> guy.</p>')
payload0 = msg.message().get_payload(0)
self.assertMessageHasHeaders(payload0, {
('MIME-Version', '1.0'),
('Content-Type', 'text/plain; charset="iso-8859-1"'),
('Content-Transfer-Encoding', 'quoted-printable')})
self.assertTrue(payload0.as_string().endswith('\n\nFirstname S=FCrname is a great guy.'))
payload1 = msg.message().get_payload(1)
self.assertMessageHasHeaders(payload1, {
('MIME-Version', '1.0'),
('Content-Type', 'text/html; charset="iso-8859-1"'),
('Content-Transfer-Encoding', 'quoted-printable')})
self.assertTrue(payload1.as_string().endswith('\n\n<p>Firstname S=FCrname is a <strong>great</strong> guy.</p>'))
def test_attachments(self):
"""Regression test for #9367"""
@ -365,7 +403,31 @@ class MailTests(TestCase):
self.assertTrue(str('Child Subject') in parent_s)
class BaseEmailBackendTests(object):
class PythonGlobalState(TestCase):
"""
Tests for #12422 -- Django smarts (#2472/#11212) with charset of utf-8 text
parts shouldn't pollute global email Python package charset registry when
django.mail.message is imported.
"""
def test_utf8(self):
txt = MIMEText('UTF-8 encoded body', 'plain', 'utf-8')
self.assertTrue('Content-Transfer-Encoding: base64' in txt.as_string())
def test_7bit(self):
txt = MIMEText('Body with only ASCII characters.', 'plain', 'utf-8')
self.assertTrue('Content-Transfer-Encoding: base64' in txt.as_string())
def test_8bit_latin(self):
txt = MIMEText('Body with latin characters: àáä.', 'plain', 'utf-8')
self.assertTrue(str('Content-Transfer-Encoding: base64') in txt.as_string())
def test_8bit_non_latin(self):
txt = MIMEText('Body with non latin characters: А Б В Г Д Е Ж Ѕ З И І К Л М Н О П.', 'plain', 'utf-8')
self.assertTrue(str('Content-Transfer-Encoding: base64') in txt.as_string())
class BaseEmailBackendTests(HeadersCheckMixin, object):
email_backend = None
def setUp(self):
@ -523,7 +585,15 @@ class BaseEmailBackendTests(object):
email = EmailMessage('Subject', 'Content', 'from@example.com', ['to@example.com'], cc=['cc@example.com'])
mail.get_connection().send_messages([email])
message = self.get_the_message()
self.assertStartsWith(message.as_string(), 'Content-Type: text/plain; charset="utf-8"\nMIME-Version: 1.0\nContent-Transfer-Encoding: 7bit\nSubject: Subject\nFrom: from@example.com\nTo: to@example.com\nCc: cc@example.com\nDate: ')
self.assertMessageHasHeaders(message, {
('MIME-Version', '1.0'),
('Content-Type', 'text/plain; charset="utf-8"'),
('Content-Transfer-Encoding', '7bit'),
('Subject', 'Subject'),
('From', 'from@example.com'),
('To', 'to@example.com'),
('Cc', 'cc@example.com')})
self.assertIn('\nDate: ', message.as_string())
def test_idn_send(self):
"""
@ -681,7 +751,14 @@ class ConsoleBackendTests(BaseEmailBackendTests, TestCase):
s = StringIO()
connection = mail.get_connection('django.core.mail.backends.console.EmailBackend', stream=s)
send_mail('Subject', 'Content', 'from@example.com', ['to@example.com'], connection=connection)
self.assertTrue(s.getvalue().startswith('Content-Type: text/plain; charset="utf-8"\nMIME-Version: 1.0\nContent-Transfer-Encoding: 7bit\nSubject: Subject\nFrom: from@example.com\nTo: to@example.com\nDate: '))
self.assertMessageHasHeaders(s.getvalue(), {
('MIME-Version', '1.0'),
('Content-Type', 'text/plain; charset="utf-8"'),
('Content-Transfer-Encoding', '7bit'),
('Subject', 'Subject'),
('From', 'from@example.com'),
('To', 'to@example.com')})
self.assertIn('\nDate: ', s.getvalue())
class FakeSMTPChannel(smtpd.SMTPChannel):