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Fixed #21093 -- Ensured that mails are not base64 encoded on python 3.3.3+.

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Thanks to Arfrever for the report and Aymeric for the review.
This commit is contained in:
Florian Apolloner 2013-12-28 12:40:10 +01:00
parent b7a7baa554
commit f28ea02308
1 changed files with 30 additions and 41 deletions
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71
django/core/mail/message.py
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@ -3,9 +3,10 @@ from __future__ import unicode_literals
import mimetypes
import os
import random
import sys
import time
from email import charset as Charset, encoders as Encoders, message_from_string
from email.generator import Generator
from email import (charset as Charset, encoders as Encoders,
message_from_string, generator)
from email.message import Message
from email.mime.text import MIMEText
from email.mime.multipart import MIMEMultipart
@ -121,13 +122,7 @@ def sanitize_address(addr, encoding):
return formataddr((nm, addr))
class SafeMIMEMessage(MIMEMessage):
def __setitem__(self, name, val):
# message/rfc822 attachments must be ASCII
name, val = forbid_multi_line_headers(name, val, 'ascii')
MIMEMessage.__setitem__(self, name, val)
class MIMEMixin():
def as_string(self, unixfrom=False):
"""Return the entire formatted message as a string.
Optional `unixfrom' when True, means include the Unix From_ envelope
@ -136,13 +131,33 @@ class SafeMIMEMessage(MIMEMessage):
This overrides the default as_string() implementation to not mangle
lines that begin with 'From '. See bug #13433 for details.
"""
fp = six.StringIO()
g = Generator(fp, mangle_from_=False)
g.flatten(self, unixfrom=unixfrom)
return fp.getvalue()
# Using a normal Generator on python 3 will yield a string, which will
# get base64 encoded in some cases to ensure that it's always convertable
# to ascii. We don't want base64 encoded emails, so we use a BytesGenertor
# which will do the right thing and then decode according to our known
# encoding. See #21093 and #3472 for details.
if six.PY3 and sys.version_info >= (3, 3, 3):
fp = six.BytesIO()
g = generator.BytesGenerator(fp, mangle_from_=False)
g.flatten(self, unixfrom=unixfrom)
encoding = self.get_charset().get_output_charset() if self.get_charset() else 'utf-8'
return fp.getvalue().decode(encoding)
else:
fp = six.StringIO()
g = generator.Generator(fp, mangle_from_=False)
g.flatten(self, unixfrom=unixfrom)
return fp.getvalue()
class SafeMIMEText(MIMEText):
class SafeMIMEMessage(MIMEMixin, MIMEMessage):
def __setitem__(self, name, val):
# message/rfc822 attachments must be ASCII
name, val = forbid_multi_line_headers(name, val, 'ascii')
MIMEMessage.__setitem__(self, name, val)
class SafeMIMEText(MIMEMixin, MIMEText):
def __init__(self, text, subtype, charset):
self.encoding = charset
@ -161,21 +176,8 @@ class SafeMIMEText(MIMEText):
name, val = forbid_multi_line_headers(name, val, self.encoding)
MIMEText.__setitem__(self, name, val)
def as_string(self, unixfrom=False):
"""Return the entire formatted message as a string.
Optional `unixfrom' when True, means include the Unix From_ envelope
header.
This overrides the default as_string() implementation to not mangle
lines that begin with 'From '. See bug #13433 for details.
"""
fp = six.StringIO()
g = Generator(fp, mangle_from_=False)
g.flatten(self, unixfrom=unixfrom)
return fp.getvalue()
class SafeMIMEMultipart(MIMEMultipart):
class SafeMIMEMultipart(MIMEMixin, MIMEMultipart):
def __init__(self, _subtype='mixed', boundary=None, _subparts=None, encoding=None, **_params):
self.encoding = encoding
@ -185,19 +187,6 @@ class SafeMIMEMultipart(MIMEMultipart):
name, val = forbid_multi_line_headers(name, val, self.encoding)
MIMEMultipart.__setitem__(self, name, val)
def as_string(self, unixfrom=False):
"""Return the entire formatted message as a string.
Optional `unixfrom' when True, means include the Unix From_ envelope
header.
This overrides the default as_string() implementation to not mangle
lines that begin with 'From '. See bug #13433 for details.
"""
fp = six.StringIO()
g = Generator(fp, mangle_from_=False)
g.flatten(self, unixfrom=unixfrom)
return fp.getvalue()
class EmailMessage(object):
"""