smtplib is broken in Python3

[miwa]

BPO	5259
Nosy	@loewis, @devdanzin, @bitdancer
Dependencies	bpo-3921: smtplib cannot sendmail over TLS bpo-5304: email/base64mime.py cannot work
Files	smtptest.py: smtplib test file 3.0.txt: Python3.0's output of smtptest.py smtplib_eol.diff: Musashi's fix as a patch test-smtplib.diff: unit test

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

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GitHub fields:

assignee = 'https://github.com/bitdancer'
closed_at = <Date 2009-05-28.18:51:52.597>
created_at = <Date 2009-02-14.14:19:17.380>
labels = ['easy', 'type-bug', 'library']
title = 'smtplib is broken in Python3'
updated_at = <Date 2009-05-28.18:52:20.443>
user = 'https://bugs.python.org/miwa'

bugs.python.org fields:

activity = <Date 2009-05-28.18:52:20.443>
actor = 'r.david.murray'
assignee = 'r.david.murray'
closed = True
closed_date = <Date 2009-05-28.18:51:52.597>
closer = 'r.david.murray'
components = ['Library (Lib)']
creation = <Date 2009-02-14.14:19:17.380>
creator = 'miwa'
dependencies = ['3921', '5304']
files = ['13088', '13092', '13783', '14043']
hgrepos = []
issue_num = 5259
keywords = ['patch', 'easy']
message_count = 12.0
messages = ['82064', '82065', '82107', '82140', '82438', '86539', '86563', '88237', '88239', '88253', '88262', '88473']
nosy_count = 8.0
nosy_names = ['loewis', 'ajaksu2', 'marcin.bachry', 'r.david.murray', 'miwa', 'kalevi', 'toastedrobot', 'j.l.caceres']
pr_nums = []
priority = 'critical'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = 'behavior'
url = 'https://bugs.python.org/issue5259'
versions = ['Python 3.0', 'Python 3.1']

[miwa]

Issue #<3921> may be the same problem.

Sending Gmail by smtplib fails on Python 3.0 and 3.0.1.
It seems to be exist two problems in encode_plain function in smtplib.py:

• parameter of encode_base64 must be bytes, not str,
• by default, encode_base64 adds extra newline.
  The following is an example of patch.

# original version
def encode_plain(user, password):
    return encode_base64("\0%s\0%s" % (user, password))

# fixed version. Note that "eol=''" is given in Python 2.6's smtplib.
def encode_plain(user, password):
    s = "\0%s\0%s" % (user, password)
    return encode_base64(s.encode('ascii'), eol='')

[loewis]

Can you show us the failing application? Most likely, the bug is in your
code, not in Python.

[kalevi]

The attached test script works fine in Python 2.6.

Replace the following texts in the script:
from@gmail.com
to@gmail.com
password

[miwa]

The attachment is output of smtptest.py on Python 3.0.

[toastedrobot]

sorry, pressed the wrong button.

that solution does work. didn't find this until #python helped me get:

return encode_base64( ("\0%s\0%s" % (user, password) ).encode('ascii') )

[marcinbachry]

I add simple smtp auth unit test to exercise this bug.