Commit Graph

118 Commits

Author SHA1 Message Date
Emilio López 7b35234c7b
email_mirror: Fix exception handling unstructured headers.
This commit rewrites the way addresses are collected. If
the header with the address is not an AddressHeader (for instance,
Delivered-To and Envelope-To), we take its string representation.

Fixes: #15864 ("Error in email_mirror - _UnstructuredHeader has no attribute addresses").
2020-07-22 12:11:25 -07:00
Mohit Gupta 60ee3ce68a tests: Verify error logs by log_and_report function.
This commit verify error logs printed during testing of log_and report
function using assertLogs without printing it in test output and hence
avoiding spam.
2020-07-21 12:22:21 -07:00
Anders Kaseorg a803e68528 email-mirror-postfix: Handle 8-bit messages correctly.
Since JSON can’t represent bytes, we encode them with base64.

Signed-off-by: Anders Kaseorg <anders@zulip.com>
2020-06-14 20:24:06 -07:00
Anders Kaseorg bff3dcadc8 email: Migrate to new Python ≥ 3.3 email API.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2020-06-14 20:24:06 -07:00
Anders Kaseorg 365fe0b3d5 python: Sort imports with isort.
Fixes #2665.

Regenerated by tabbott with `lint --fix` after a rebase and change in
parameters.

Note from tabbott: In a few cases, this converts technical debt in the
form of unsorted imports into different technical debt in the form of
our largest files having very long, ugly import sequences at the
start.  I expect this change will increase pressure for us to split
those files, which isn't a bad thing.

Signed-off-by: Anders Kaseorg <anders@zulip.com>
2020-06-11 16:45:32 -07:00
Anders Kaseorg 69730a78cc python: Use trailing commas consistently.
Automatically generated by the following script, based on the output
of lint with flake8-comma:

import re
import sys

last_filename = None
last_row = None
lines = []

for msg in sys.stdin:
    m = re.match(
        r"\x1b\[35mflake8    \|\x1b\[0m \x1b\[1;31m(.+):(\d+):(\d+): (\w+)", msg
    )
    if m:
        filename, row_str, col_str, err = m.groups()
        row, col = int(row_str), int(col_str)

        if filename == last_filename:
            assert last_row != row
        else:
            if last_filename is not None:
                with open(last_filename, "w") as f:
                    f.writelines(lines)

            with open(filename) as f:
                lines = f.readlines()
            last_filename = filename
        last_row = row

        line = lines[row - 1]
        if err in ["C812", "C815"]:
            lines[row - 1] = line[: col - 1] + "," + line[col - 1 :]
        elif err in ["C819"]:
            assert line[col - 2] == ","
            lines[row - 1] = line[: col - 2] + line[col - 1 :].lstrip(" ")

if last_filename is not None:
    with open(last_filename, "w") as f:
        f.writelines(lines)

Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
2020-06-11 16:04:12 -07:00
Anders Kaseorg 67e7a3631d python: Convert percent formatting to Python 3.6 f-strings.
Generated by pyupgrade --py36-plus.

Signed-off-by: Anders Kaseorg <anders@zulip.com>
2020-06-10 15:02:09 -07:00
Anders Kaseorg 8dd83228e7 python: Convert "".format to Python 3.6 f-strings.
Generated by pyupgrade --py36-plus --keep-percent-format, but with the
NamedTuple changes reverted (see commit
ba7906a3c6, #15132).

Signed-off-by: Anders Kaseorg <anders@zulip.com>
2020-06-08 15:31:20 -07:00
Anders Kaseorg 840cf4b885 requirements: Drop direct dependency on mock.
mock is just a backport of the standard library’s unittest.mock now.

The SAMLAuthBackendTest change is needed because
MagicMock.call_args.args wasn’t introduced until Python
3.8 (https://bugs.python.org/issue21269).

The PROVISION_VERSION bump is skipped because mock is still an
indirect dev requirement via moto.

Signed-off-by: Anders Kaseorg <anders@zulip.com>
2020-05-26 11:40:42 -07:00
Anders Kaseorg bdc365d0fe logging: Pass format arguments to logging.
https://docs.python.org/3/howto/logging.html#optimization

Signed-off-by: Anders Kaseorg <anders@zulip.com>
2020-05-02 10:18:02 -07:00
Anders Kaseorg c734bbd95d python: Modernize legacy Python 2 syntax with pyupgrade.
Generated by `pyupgrade --py3-plus --keep-percent-format` on all our
Python code except `zthumbor` and `zulip-ec2-configure-interfaces`,
followed by manual indentation fixes.

Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
2020-04-09 16:43:22 -07:00
Steve Howell 1306239c16 tests: Use email/delivery_email more explicitly.
We try to use the correct variation of `email`
or `delivery_email`, even though in some
databases they are the same.

(To find the differences, I temporarily hacked
populate_db to use different values for email
and delivery_email, and reduced email visibility
in the zulip realm to admins only.)

In places where we want the "normal" realm
behavior of showing emails (and having `email`
be the same as `delivery_email`), we use
the new `reset_emails_in_zulip_realm` helper.

A couple random things:

    - I fixed any error messages that were leaking
      the wrong email

    - a test that claimed to rely on the order
      of emails no longer does (we sort user_ids
      instead)

    - we now use user_ids in some place where we used
      to use emails

    - for IRC mirrors I just punted and used
      `reset_emails_in_zulip_realm` in most places

    - for MIT-related tests, I didn't fix email
      vs. delivery_email unless it was obvious

I also explicitly reset the realm to a "normal"
realm for a couple tests that I frankly just didn't
have the energy to debug.  (Also, we do want some
coverage on the normal case, even though it is
"easier" for tests to pass if you mix up `email`
and `delivery_email`.)

In particular, I just reset data for the analytics
and corporate tests.
2020-03-19 16:04:03 -07:00
Steve Howell 1b16693526 tests: Limit email-based logins.
We now have this API...

If you really just need to log in
and not do anything with the actual
user:

    self.login('hamlet')

If you're gonna use the user in the
rest of the test:

    hamlet = self.example_user('hamlet')
    self.login_user(hamlet)

If you are specifically testing
email/password logins (used only in 4 places):

    self.login_by_email(email, password)

And for failures uses this (used twice):

    self.assert_login_failure(email)
2020-03-11 17:10:22 -07:00
Mateusz Mandera 8bd3752d13 email_mirror: Handle encoded attachment filenames. 2020-01-30 13:03:47 -08:00
Mateusz Mandera 9dcf677bf9 email_mirror: Parse encoded From headers with show_sender=True. 2020-01-29 12:27:35 -08:00
Mateusz Mandera d37e6ef921 email_mirror: Use plaintext if html body empty with prefer-html option.
If an email is sent with the .prefer-html option, but it has no html
body, it's better to fall back to plaintext content instead of treating
it as a user error.
2020-01-16 15:25:27 -08:00
Mateusz Mandera 0c9c218e91 email_mirror: Add prefer-html and prefer-text address options.
Closes #13484.

These options tell zulip whether to prefer the plaintext or html version
of the email message. prefer-text is the default behavior, so including
the option doesn't change anything as of now, but we're adding it to
prepare to potentially change the default behavior in the future.
2020-01-16 15:25:19 -08:00
Mateusz Mandera 0beae44081 email_mirror: Use .walk() to search all MIME parts for attachments.
Fixes #13416

We used to search only one level in depth through the MIME structure,
and thus would miss attachments that were nested deeper (which can
happen with some email clients). We can take advantage of message.walk()
to iterate through each MIME part.
2020-01-14 15:37:39 -08:00
Mateusz Mandera 1561d144e0 email_mirror: Insert a new line before attachment links. 2020-01-14 15:37:39 -08:00
Mateusz Mandera 90a69ab24f email_mirror: Reuse exception messages in mirror_email_message. 2020-01-12 11:30:18 -08:00
Mateusz Mandera c011d2c6d3 email_mirror: Migrate missed message addresses from redis to database.
Addresses point 1 of #13533.

MissedMessageEmailAddress objects get tied to the specific that was
missed by the user. A useful benefit of that is that email message sent
to that address will handle topic changes - if the message that was
missed gets its topic changed, the email response will get posted under
the new topic, while in the old model it would get posted under the
old topic, which could potentially be confusing.

Migrating redis data to this new model is a bit tricky, so the migration
code has comments explaining some of the compromises made there, and
test_migrations.py tests handling of the various possible cases that
could arise.
2020-01-07 13:03:22 -08:00
Mateusz Mandera 3271235200 email_mirror: Ignore missed message email if the user isn't active. 2019-09-20 17:58:10 -07:00
Mateusz Mandera 21459ed193 test_email_mirror: Test missed message emails in a single ZulipTestCase.
With the way these tests are, it's unnecessary to have 3 separate
classes, and it makes it confusing to decide where to add a potential
additional mm email test.
2019-09-20 17:58:10 -07:00
Mateusz Mandera dfd6771237 stream settings: Use the .show-sender version of email address.
As requested in #13134.
2019-09-05 11:48:32 -07:00
Mateusz Mandera 307d8d8758 test_email_mirror: Better document the various address formats. 2019-09-05 11:48:32 -07:00
Mateusz Mandera f1b135bd16 email_mirror: Rename include-quotations to include-quotes. 2019-07-20 15:53:43 -07:00
Mateusz Mandera 519ed41803 email_mirror: Display stream email address with . as the separator. 2019-07-20 15:53:43 -07:00
Mateusz Mandera 8bbd1d005d email_mirror: Support both + and . as separators in the address. 2019-07-20 15:53:42 -07:00
Mateusz Mandera 58754830fd email_mirror: Rename "include-footers" option to "include-footer". 2019-07-08 20:10:21 -07:00
Mateusz Mandera 569d79b9d8 email_mirror: Add support for "+include-quotations" in address.
We add an option to disable the stripping of quotations from the email
body, if "+include-quotations" token is included in the email address.
2019-06-02 10:50:59 -07:00
Mateusz Mandera e4138c5463 email_mirror: Add support for "+include-footers" in address.
In addition to the "+show-sender" option, we now add "+include-footers"
which disables stripping of the footer from the email body if this token
is included in the email address.
2019-06-02 10:50:59 -07:00
Mateusz Mandera a5aa4adb54 email_mirror: Add general support for optional tokens in the address.
To enable a comfortable way of adding more optional tokens in the
address (like current '+show-sender') we change decode_email_address to
return a general dictionary containing options specified through adding
these optional tokens in the To: address. For now, we only have
"+show-sender", but more can be easily added using this change.
2019-06-02 10:50:59 -07:00
Mateusz Mandera 4f9bbe9d66 email_mirror: Clean up and expand test_get_missed_message_token.
This is the only function in TestEmailMirrorLibrary, so we rename this
class to more appropriate TestGetMissedMessageToken, clean it up a bit
and add some extra checks to finally get email_mirror.py to 100% test
coverage.
2019-05-20 19:35:32 -07:00
Mateusz Mandera a0efd76f4e email_mirror: Rewrite log_and_report and cover it with tests.
log_and_report and its helper functions were mostly old code no longer
well adapted to how email mirror works currently, as well as having no
test coverage. We rewrite this part of the email to report errors in a
similar manner, and add tests for it. We're able to get rid of the
clunky and now useless debug_info dictionary in process message, as
log_and_report only needs the recipient email in its third argument.
2019-05-20 19:35:32 -07:00
Mateusz Mandera f71c1e6a0c email_mirror: Add test for process_message not finding valid recipient. 2019-05-12 18:55:47 -07:00
Mateusz Mandera fb3fa7883b email_mirror: Clean up TestStreamEmailMessagesEmptyBody.
These tests have some code and comments that only used to apply when
these empty body scenarios used to raise the regular
ZulipEmailForwardError - now they raise ZulipEmailForwardUserError.
We adapt the tests to this fact and test by mocking logging.warning and
making sure it gets called with the intended warning message. This is
also needed to cover the ZulipEmailForwardUserError case with tests to
get to 100% coverage of email_mirror.py.
2019-05-12 18:55:24 -07:00
Mateusz Mandera f892ef1d3f email_mirror: Add tests for messages with attachments. 2019-05-12 18:55:24 -07:00
Mateusz Mandera ede0991ef5 email_mirror: Add tests for filter_footer. 2019-05-12 18:55:24 -07:00
Mateusz Mandera 30c588636b email_mirror: Add test for stream missed message emails. 2019-05-12 18:55:24 -07:00
Mateusz Mandera c2e5661f69 email_mirror: Add test for redis_client.hmget returning None values.
We add a test for the case "if not all(val is not None for val in result):"
on result returned by redis_client.hmget in send_to_missed_message_address.
2019-05-12 18:55:24 -07:00
Mateusz Mandera 2e9dfc1739 email_mirror: Add test to cover empty body after footer stripping. 2019-05-12 18:55:24 -07:00
Mateusz Mandera 40f5755546 email_mirror: Handle case of unspecified charset in Content-Type header.
If the text part of an email message didn't specify the charset in the
Content-Type header, the text content wouldn't be found. We fix this, by
assuming us-ascii charset in those cases, as specified by RFC6657:
https://tools.ietf.org/html/rfc6657
2019-05-09 09:57:40 -07:00
Mateusz Mandera c7c1dbec60 email_mirror: Raise ZulipEmailForwardError if email pattern not recognised.
With the previous commit, fixes #1836.

As specified in the issue above, we make
get_email_gateway_message_string_from_address raise an exception if
it doesn't recognise the email gateway address pattern. Then, we make
appropriate adjustments in the codepaths which call this function.
2019-03-21 15:25:57 -07:00
Mateusz Mandera e32c444ecf email_mirror: Move some helper functions out of actions.py.
These functions don't really belong in actions.py, so we move them out,
into email_mirror_helpers.py. They can't go directly into
email_mirror.py or we'd get circular imports resulting in ImportError.
2019-03-21 15:25:57 -07:00
Mateusz Mandera 5b86734178 email_mirror: Change stream name encoding in mirror addresses.
Fixes #9840.

Old addresses caused bugs in some cases with non-latin characters in
stream names (see issue number above). We switch to using django's
slugify helper function to convert stream names to full ascii, while
also getting rid of problematic non-alphanumeric characters, in a
reasonable way. See Django's documentation for slugify to see more about
how this function works.

Tests extended by tabbott to cover cases where we do end up with ascii.
2019-03-18 11:14:22 -07:00
Mateusz Mandera a64a075ff1 email_mirror: Ignore stream_name part of receiving address.
To prepare for changing how the stream name gets encoded into mirror
email addresses while making sure old addresses keep working, we ignore
the stream_name part when receiving emails into the mirror and we only
look at the email_token to identify into which stream to mirror the
email.
2019-03-18 11:06:51 -07:00
Tim Abbott 50dc317466 notifications: Rename notifications.py to email_notifications.py.
This library is entirely about email notifications specifically, and
this rename should help make the codebase more readable.
2019-03-15 11:02:17 -07:00
Mateusz Mandera edcb6d57fc email_mirror: Don't remove quotations from forwarded messages.
Addresses point 2 of #10612. We use a regex to detect if a form
of FWD indicator is present at the beginning of the subject, which
means the message has been forwarded.
remove_quotations argument is added to a couple of functions where
it's necessary.
In filter_footer, the criteria for a line to be a possible beginning
of a footer is changed to line.strip() == "--", instead of
line.strip().startswith("--"), because the former would remove
quotations from plaintext emails. This change makes sense, because
RFC 3676 specifies ""-- " as the separator line between the body
and the signature of a message":
https://tools.ietf.org/html/rfc3676
2019-03-09 15:36:17 -08:00
Mateusz Mandera 0633f268fb email_mirror: Move subject processing into process_stream_message.
We remove the 'subject' argument of process_stream_message and make
subject processing happen inside the function, as it's a more
appropriate place than the general process_message function and is
needed to have a good way of disabling removing quotations in forwarded
emails sent into the mirror.
2019-03-09 15:36:17 -08:00
Mateusz Mandera 518ccec235 test_email_mirror: Improve performance of subject stripping tests.
This used to have a single function test_email_subject_stripping which
would run through a sizeable list of example subjects from subjects.json
fixture, form an email with each subject, send it to the email mirror
and check if the resulting stream message has a correctly stripped
topic. That took too much time, because we run through the entire
process_message and most_recent_message codepaths a lot of times.
We change the way of testing to:
1. Ensure process_message applies subject stripping (only need to run
process_message twice here)
2. Test the strip_from_subject function separately, on all the example
from the subjects.json fixtures. This is very fast.
2019-03-09 23:15:41 +01:00