Send the `csrftoken` and `sessionid` cookies with `SameSite=Lax`.
This adds a layer of defense against CSRF attacks and matches the new
default in Django 2.1:
https://docs.djangoproject.com/en/2.1/releases/2.1/#samesite-cookies
This can be reverted when we upgrade to Django ≥ 2.1.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
This fixes a collection of bugs surrounding LDAP configurations A and
C (i.e. LDAP_APPEND_DOMAIN=None) with EmailAuthBackend also enabled.
The core problem was that our desired security model in that setting
of requiring LDAP authentication for accounts managed by LDAP was not
implementable without a way to
Now admins can configure an LDAPSearch query that will find if there
are users in LDAP that have the email address and
email_belongs_to_ldap() will take advantage of that - no longer
returning True in response to all requests and thus blocking email
backend authentication.
In the documentation, we describe this as mandatory configuration for
users (and likely will make it so soon in the code) because the
failure modes for this not being configured are confusing.
But making that change is pending work to improve the relevant error
messages.
Fixes#11715.
There are a few outstanding issues that we expect to resolve beforce
including this in a release, but this is good checkpoint to merge.
This PR is a collaboration with Tim Abbott.
Fixes#716.
Fixes#9401.
This adds a FAKE_EMAIL_DOMAIN setting, which should be used if
EXTERNAL_HOST is not a valid domain, and something else is needed to
form bot and dummy user emails (if email visibility is turned off).
It defaults to EXTERNAL_HOST.
get_fake_email_domain() should be used to get this value. It validates
that it's correctly set - that it can be used to form valid emails.
If it's not set correctly, an exception is raised. This is the right
approach, because it's undesirable to have the server seemingly
peacefully operating with that setting misconfigured, as that could
mask some hidden sneaky bugs due to UserProfiles with invalid emails,
which would blow up the moment some code that does validate the emails
is called.
The current code looks like it's trying to redirect /integrations/doc/email
to /integrations when EMAIL_GATEWAY_PATTERN is not set.
I think it doesn't currently do this. The test for that pathway has a bug:
self.get_doc('integrations/doc-html/email', subdomain='zulip') needs a
leading slash, and putting the slash back in results in the test failing.
This redirection is not really desired behavior -- better is to
unconditionally show that the email integration exists, and just point the
user to https://zulip.readthedocs.io/en/latest/production/email-gateway.html
(this is done in a child commit).
This commit alone breaks things, needs to be merged with the follow-up
ones.
welcome-bot is removed from the explicit list, because it already is in
settings.INTERNAL_BOTS.
Django’s default FileSystemFinder disallows STATICFILES_DIRS from
containing STATIC_ROOT (by raising an ImproperlyConfigured exception),
because STATIC_ROOT is supposed to be the result of collecting all the
static files in the project, not one of the potentially many sources
of static files.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
This change serves to declutter webhook-errors.log, which is
filled with too many UnexpectedWebhookEventType exceptions.
Keeping UnexpectedWebhookEventType in zerver/lib/webhooks/common.py
led to a cyclic import when we tried to import the exception in
zerver/decorators.py, so this commit also moves this exception to
another appropriate module. Note that our webhooks still import
this exception via zerver/lib/webhooks/common.py.
This replaces the two custom Google authentication backends originally
written in 2012 with using the shared python-social-auth codebase that
we already use for the GitHub authentication backend. These are:
* GoogleMobileOauth2Backend, the ancient code path for mobile
authentication last used by the EOL original Zulip Android app.
* The `finish_google_oauth2` code path in zerver/views/auth.py, which
was the webapp (and modern mobile app) Google authentication code
path.
This change doesn't fix any known bugs; its main benefit is that we
get to remove hundreds of lines of security-sensitive semi-duplicated
code, replacing it with a widely trusted, high quality third-party
library.
The documentation suggests that you can get the dev server to use
production assets by setting PIPELINE_ENABLED = True, but that
resulted in Django being unable to find any static files because
FileSystemFinder was missing from STATICFILES_FINDERS. Using the
production storage configuration in this case reduces the number of
possible configurations and seems to result in things being less
broken.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
We don’t need a hacked copy anymore. We run the installed version out
of node_modules in development, and a Webpack-bundled version of that
in production.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
As of commit cff40c557b (#9300), these
files are no longer served directly to the browser. Disentangle them
from the static asset pipeline so we can refactor it without worrying
about them.
This has the side effect of eliminating the accidental duplication of
translation data via hash-naming in our release tarballs.
This reverts commit b546391f0b (#1148).
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
It appears not to have been useful and makes it marginally harder to
reason about how module resolution works. Paths to static content in
node_modules should be resolved through Webpack instead.
(This node_modules symlink was originally created in the pre-webpack world
where all of our static asset paths were based in static/.)
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
The `AUTH_LDAP_ALWAYS_UPDATE_USER` is `True` by default, and this would sync the
attributes defined in the `AUTH_LDAP_USER_ATTR_MAP` to the user profile. But,
the default code in `django-auth-ldap` would work correctly only for `full_name`
field. This commit disables the setting by default, in favour of using the
`sync_ldap_user_data` script as a cron job.
Jitsi Meet is the correct name for the product we integrate with. There is
one other reference to Jitsi, but it's in the db and will require a
migration.
Fixes#12132.
Realm setting to disable avatar changes is already present.
The `AVATAR_CHANGES_DISABLED` setting now follows the same
2-setting model as `NAME_CHANGES_DISABLED`.
Closes#2420
We add rate limiting (max X emails withing Y seconds per realm) to the
email mirror. By creating RateLimitedRealmMirror class, inheriting from
RateLimitedObject, and rate_limit_mirror_by_realm function, following a
mechanism used by rate_limit_user, we're able to have this
implementation mostly rely on the already existing, and proven over
time, rate_limiter.py code. The rules are configurable in settings.py in
RATE_LIMITING_MIRROR_REALM_RULES, analogically to RATE_LIMITING_RULES.
Rate limit verification happens in the MirrorWorker in
queue_processors.py. We don't rate limit missed message emails, as due
to using one time addresses, they're not a spam threat.
test_mirror_worker is adapted to the altered MirrorWorker code and a new
test - test_mirror_worker_rate_limiting is added in test_queue_worker.py
to provide coverage for these changes.
When soft deactivation is run for in "auto" mode (no emails are
specified and all users inactive for specified number of days are
deactivated), catch-up is also run in the "auto" mode if
AUTO_CATCH_UP_SOFT_DEACTIVATED_USERS is True.
Automatically catching up soft-deactivated users periodically would
ensure a good user experience for returning users, but on some servers
we may want to turn off this option to save on some disk space.
Fixes#8858, at least for the default configuration, by eliminating
the situation where there are a very large number of messages to recover.
When a bunch of messages with active notifications are all read at
once -- e.g. by the user choosing to mark all messages, or all in a
stream, as read, or just scrolling quickly through a PM conversation
-- there can be a large batch of this information to convey. Doing it
in a single GCM/FCM message is better for server congestion, and for
the device's battery.
The corresponding client-side logic is in zulip/zulip-mobile#3343 .
Existing clients today only understand one message ID at a time; so
accommodate them by sending individual GCM/FCM messages up to an
arbitrary threshold, with the rest only as a batch.
Also add an explicit test for this logic. The existing tests
that happen to cause this function to run don't exercise the
last condition, so without a new test `--coverage` complains.
ACCOUNT_ACTIVATION_DAYS doesn't seems to be used anywhere.
INVITATION_LINK_VALIDITY_DAYS seems to do it's job currently.
(It was only ever used in very early Zulip commits).
The client-side fix to make these not a problem was in release
16.2.96, of 2018-08-22. We've been sending them from the
development community server chat.zulip.org since 2018-11-29.
We started forcing clients to upgrade with commit fb7bfbe9a,
deployed 2018-12-05 to zulipchat.com.
(The mobile app unconditionally makes a request to a route on
zulipchat.com to check for this kind of forced upgrade, so that
applies to mobile users of any Zulip server.)
So at this point it's long past safe for us to unconditionally
send these. Hardwire the old `SEND_REMOVE_PUSH_NOTIFICATIONS`
setting to True, and simplify it out.
For Google auth, the multiuse invite key should be stored in the
csrf_state sent to google along with other values like is_signup,
mobile_flow_otp.
For social auth, the multiuse invite key should be passed as params to
the social-auth backend. The passing of the key is handled by
social_auth pipeline and made available to us when the auth is
completed.
This endpoint serves requests which might originate from an image
preview link which had an http url and the message holding the image
link was rendered before we introduced thumbnailing. In that case
we would have used a camo proxy to proxy http content over https and
avoid mix content warnings.
In near future, we plan to drop use of camo and just rely on thumbor
to serve such images. This endpoint helps maintain backward
compatibility for links which were already rendered.
This setting splits away part of responsibility from THUMBOR_URL.
Now on, this setting will be responsible for controlling whether
we thumbnail images or not by asking bugdown to render image links
to hit our /thumbnail endpoint. This is irrespective of what
THUMBOR_URL is set to though ideally THUMBOR_URL should be set
to point to a running thumbor instance.
This is somewhat hacky, in that in order to do what we're doing, we
need to parse the HTML of the rendered page to extract the first
paragraph to include in the open graph description field. But
BeautifulSoup does a good job of it.
This carries a nontrivial performance penalty for loading these pages,
but overall /help/ is a low-traffic site compared to the main app, so
it doesn't matter much.
(As a sidenote, it wouldn't be a bad idea to cache this stuff).
There's lots of things we can improve in this, largely through editing
the articles, but we can deal with that over time.
Thanks to Rishi for writing all the tests.
This adds a new realm_logo field, which is a horizontal-format logo to
be displayed in the top-left corner of the webapp, and any other
places where we might want a wide-format branding of the organization.
Tweaked significantly by tabbott to rebase, fix styling, etc.
Fixing the styling of this feature's loading indicator caused me to
notice the loading indicator for the realm_icon feature was also ugly,
so I fixed that too.
Fixes#7995.
Apparently, Django's get_current_site function (used, e.g., in
django-two-factor to look up the domain to use in QR codes) first
tries to use the Sites framework, and if unavailable, does the right
thing (namely, using request.get_host()).
We don't use the Sites framework for anything in Zulip, so the correct
fix is to just remove it.
Fixes#11014.
This makes it possible to still run the deliver_scheduled_messages
queue worker, even though we're not creating reminder-bot by default
in new organizations.
This reverts commit 2fa77d9d54.
Further investigation has determined that this did not fix the
password-reset problem described in the previous commit message;
meanwhile, it causes other problems. We still need to track down the
root cause of the original password-reset bug.
See https://github.com/zulip/zulip/issues/10856 for details on the bug
here; but basically, users who reset their password were unable to
login until the next time we flushed memcached. The issue disappeared
after stopping using the Django cached_db session engine, so it's
pretty clear that some sort of bug with that session engine
interacting with our password reset logic is the root cause.
Further debugging is required to understand this fully, but for now,
it seems wise to just disable the backend.
The cost of doing so is a small performance decrease, which is likely
acceptable until we can resolve this (it's certainly a more minor
problem than the "Can't login" bug that disabling this removes).
Some admins setting up Zulip's LDAP auth against Active Directory see
a rather baffling error message: "In order to perform this operation a
successful bind must be completed on the connection". This happens
despite AUTH_LDAP_BIND_DN and auth_ldap_bind_password being set
perfectly correctly, and on a query that the `ldapsearch` command-line
tool performs quite happily.
Empirically, adding a setting like this to /etc/zulip/settings.py
resolves the issue:
AUTH_LDAP_CONNECTION_OPTIONS = {
ldap.OPT_REFERRALS: 0
}
Some useful, concise background on the LDAP "referral" concept is here:
https://docs.oracle.com/javase/jndi/tutorial/ldap/referral/overview.html
and a pertinent bit of docs for the underlying Python `ldap` client:
https://www.python-ldap.org/en/latest/faq.html
and some very helpful documentation for Active Directory:
https://docs.microsoft.com/en-us/windows/desktop/ad/referrals
Based on the docs above, the story appears to be something like this:
* This server has the information for part of the scope of our query
-- in particular it happens to have the information we actually want.
* But there are other areas ("subordinate domains") that our query is
in principle asking about, and this server doesn't know if there are
matches there, so it gives us a referral.
* And by default, python-ldap lets `libldap` run ahead and attempt to
bind to those referrals and do those queries too -- which raises an
error because, unlike Microsoft's "LDAP API", it doesn't reuse the
credentials.
So if we simply skip trying to follow the referrals, there's no
error... and we already have, from the original response, the answer
we actually need. That's what the `ldap.OPT_REFERRALS` option does.
There may be more complex situations where the referral really is
relevant, because the desired user info is split across servers. Even
then, unless an anonymous query will be acceptable, there's no point
in letting `libldap` follow the referral and setting this option is
still the right thing. When someone eventually comes to this bridge,
some code will be required to cross it, by following the referrals.
That code might look a bit like this (unfinished) example:
https://bugs.launchpad.net/nav/+bug/1209178
Manually tested by tabbott.
Fixes#343, which was effectively a report of the need for this
OPT_REFERRALS setting.
Fixes#349, since with this change, we no longer require tricky manual
configuration to get Active Directory up and running.
Fixes part of #10297.
Use FAKE_LDAP_NUM_USERS which specifies the number of LDAP users
instead of FAKE_LDAP_EXTRA_USERS which specified the number of
extra users.
This uses the recently introduced active_mobile_push_notification
flag; messages that have had a mobile push notification sent will have
a removal push notification sent as soon as they are marked as read.
Note that this feature is behind a setting,
SEND_REMOVE_PUSH_NOTIFICATIONS, since the notification format is not
supported by the mobile apps yet, and we want to give a grace period
before we start sending notifications that appear as (null) to
clients. But the tracking logic to maintain the set of message IDs
with an active push notification runs unconditionally.
This is designed with at-least-once semantics; so mobile clients need
to handle the possibility that they receive duplicat requests to
remove a push notification.
We reuse the existing missedmessage_mobile_notifications queue
processor for the work, to avoid materially impacting the latency of
marking messages as read.
Fixes#7459, though we'll need to open a follow-up issue for
using these data on iOS.
This uses the MockLDAP class of fakeldap to fake a ldap server, based
on the approach already used in the tests in `test_auth_backends.py`.
Adds the following settings:
- FAKE_LDAP_MODE: Lets user choose out of three preset configurations.
The default mode if someone erases the entry in settings is 'a'. The
fake ldap server is disable if this option is set to None.
- FAKE_LDAP_EXTRA_USERS: Number of extra users in LDAP directory beyond
the default 8.
Fixes#9934.
That value is necessary to configure anonymous binds in
django-auth-ldap, which are useful when we're using LDAP just to
populate the user database.
Fixes#10257.
This lets us have a slightly cleaner interface for cases where we need
a custom default value than an `or None` in the definition (which
might cause issues with other falsey values).
The autenticate function now follows the signature of
Django 2.0 https://github.com/django-auth-ldap/
django-auth-ldap/commit/27a8052b26f1d3a43cdbcdfc8e7dc0322580adae
Also AUTH_LDAP_CACHE_GROUPS is depricated in favor of
AUTH_LDAP_CACHE_TIMEOUT.
We already had a setting for whether these logs were enabled; now it
also controls which stream the messages go to.
As part of this migration, we disable the feature in dev/production by
default; it's not useful for most environments.
Fixes the proximal data-export issue reported in #10078 (namely, a
stream with nobody ever subscribed to having been created).
This setting isn't intended to exist long term, but instead to make it
possible to merge our search pills code before we're ready to cut over
production environments to use it.
Various pieces of our thumbor-based thumbnailing system were already
merged; this adds the remaining pieces required for it to work:
* a THUMBOR_URL Django setting that controls whether thumbor is
enabled on the Zulip server (and if so, where thumbor is hosted).
* Replaces the overly complicated prototype cryptography logic
* Adds a /thumbnail endpoint (supported both on web and mobile) for
accessing thumbnails in messages, designed to support hosting both
external URLs as well as uploaded files (and applying Zulip's
security model for access to thumbnails of uploaded files).
* Modifies bugdown to, when THUMBOR_URL is set, render images with the
`src` attribute pointing /thumbnail (to provide a small thumbnail
for the image), along with adding a "data-original" attribute that
can be used to access the "original/full" size version of the image.
There are a few things that don't work quite yet:
* The S3 backend support is incomplete and doesn't work yet.
* The error pages for unauthorized access are ugly.
* We might want to rename data-original and /thumbnail?size=original
to use some other name, like "full", that better reflects the fact
that we're potentially not serving the original image URL.
This adds a new settings, SOCIAL_AUTH_SUBDOMAIN, which specifies which
domain should be used for GitHub auth and other python-social-auth
backends.
If one is running a single-realm Zulip server like chat.zulip.org, one
doesn't need to use this setting, but for multi-realm servers using
social auth, this fixes an annoying bug where the session cookie that
python-social-auth sets early in the auth process on the root domain
ends up masking the session cookie that would have been used to
determine a user is logged in. The end result was that logging in
with GitHub on one domain on a multi-realm server like zulipchat.com
would appear to log you out from all the others!
We fix this by moving python-social-auth to a separate subdomain.
Fixes: #9847.
This commit moves all files previously under the 'app' bundle in
the Django pipeline to being compiled by webpack under the 'app'
entry point. In the process, it moves assets under the app entry
to a file called app.js that consumes all relevant css and js files.
This commit also edits the webpack config to be able to expose certain
variables for third party libraries that are currently required by
some modules. This is bad coding form and should be refactored to
requiring whatever dependencies a module may have; we're just
deferring that to the future to simplify the series of transitions we
need to do here. The variable exposure is done using expose-loader in
webpack.
The app/index.html template is edited to override the newly introduced
'commonjs' block in the base template. This is done as a temporary
measure so as not to disrupt other pages on the app during the transition.
It also fixes the value of the 'this' context that was being inferred
as window by third party libraries. This is done using imports-loader
in the webpack config. This is also messy and probably isn't how we
want things to work long term.
Adds search_pill.js to the static asset pipeline. The items
for search pill contain 2 keys, display_value and search_string.
Adding all the operator information i.e the operator, operand and
negated fields along with the search_string and description was tried out.
It was dropped because it didn't provide any advantage as one had to
always calculate the search_string and the description from the operator.
This fixes an important issue where the realm_users cache could grow
beyond 1MB when a Zulip server had more than about 10K users. The
result was that Zulip would start 500ing with that size of userbase.
There are probably better long-term fixes, but because the realm_users
data set caches well, this change should be sufficient to let us
handle to 50-100K users or more on that metric (though at some point,
we'll start having other problems interacting with the realm_users
data set).
This new implementation model is a lot cleaner and should extend
better to the non-oauth backend supported by python-social-auth (since
we're not relying on monkey-patching `do_auth` in the OAuth backend
base class).
This adds a /ping command that will be useful for users
to see what the round trip to the Zulip server is (including
only a tiny bit of actual server time to basically give a
200).
It also introduce the "/zcommand" endpoint and zcommand.js
module.
Tim Abbott
Anders Kaseorg
Vishnu KS
Mateusz Mandera
Shikhar Varshney
Rishi Gupta
Eeshan Garg
Harshit Bansal
Wyatt Hoodes
Anders Kaseorg
Puneeth Chaganti
Shubham Padia
Greg Price
Rohitt Vashishtha
Aditya Bansal
seresheim
Joshua Pan
Steve Howell
Priyank Patel
Armaan Ahluwalia
Yashashvi Dave
Raymond Akornor