Commit Graph

2539 Commits

Author SHA1 Message Date
Alex Vandiver 16a53d08fd default_settings: Set NAGIOS_BOT_HOST to most likely correct hostname.
Using only EXTERNAL_HOST results in:
```
CRITICAL: Error subscribing to Zulips: Account is not associated with this subdomain
```

Since system bots like the nagios bot are created in
`SYSTEM_BOT_REALM`, default to that subdomain of `EXTERNAL_HOST`.
2024-05-08 15:51:20 -07:00
Vector73 8ab526a25a models: Replace realm.uri with realm.url.
In #23380, we are changing all occurrences of uri with url in order to
follow the latest URL standard. Previous PRs #25038 and #25045 has
replaced the occurences of uri that has no direct relation with realm.

This commit changes just the model property, which has no API
compatibility concerns.
2024-05-08 11:12:43 -07:00
Tim Abbott 0a756c652c push_notifications: Shard mobile push notifications. 2024-05-02 14:25:10 -07:00
Alex Vandiver 4dd801eb71 settings: Fix a typo in a comment. 2024-04-30 12:37:02 -07:00
Sahil Batra 27558315a2 settings: Use named_user_group field to access name.
This commit updates code to access name from named_user_group
field which points to the "NamedUserGroup" instead of directly
accessing name from "UserGroup", since name field will only
be present on NamedUserGroup objects in further commits.
2024-04-26 17:03:09 -07:00
Sahil Batra 0ff9aacb96 audit_logs: Set modified_user_group field to NamedUserGroup. 2024-04-26 17:03:09 -07:00
Prakhar Pratyush c727b36e9c soft_reactivate: Soft reactivate if group mention has < 12 members.
Earlier, we didn't soft-reactivate users for group mentions
at all because it wasn't easy to calculate group size.

Now, we will soft reactivate if the user group mentions has
less than 12 members.

We don't reactivate all users because a user group can have a
very large size, which can lead to large backlogs in the
deferred-work queue.

Fixes part of #27586.
2024-04-24 17:40:37 -07:00
Alex Vandiver 11dd6791c4 management: Provide a common lockfile dir, and a decorator for it.
Factor out the repeated pattern of taking a lock, or immediately
aborting with a message if it cannot be acquired.  The exit code in
that situation is changed to be exit code 1, rather than the successful
0; we are likely missing new work since that process started.

We move the lockfiles to a common directory under `/srv/zulip-locks`
rather than muddy up `/home/zulip/deployments`.
2024-04-24 14:40:28 -07:00
Alex Vandiver 62cf6ab35c sentry: Support setting project_dsn in zulip.conf. 2024-04-24 14:40:28 -07:00
Vector73 0f97733687 api_documentation: Document "/invites/{prereg_id}" endpoint. 2024-04-20 18:12:04 -07:00
Tim Abbott 342a9bd5cd zulip_updates: Prevent racing with self using a lock. 2024-04-18 15:14:02 -07:00
Anders Kaseorg 3b4527843d requirements: Upgrade Django to 5.0.5.dev.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2024-04-18 12:39:47 -07:00
Anders Kaseorg 166c233b2a default_settings: Weaken CUSTOM_AUTHENTICATION_WRAPPER_FUNCTION type.
Fixes an import cycle that breaks mypy inference with django-stubs:

zproject.settings → zproject.configured_settings →
zproject.default_settings → zerver.models.users → django.conf →
zproject.settings

(The Django settings system is really not an appropriate place to put
functions.)

Signed-off-by: Anders Kaseorg <anders@zulip.com>
2024-04-17 16:49:03 -07:00
Anders Kaseorg 73116f78a5 settings: Hide django_stubs_ext from mypy.
Fixes an import cycle that breaks mypy inference with django-stubs:

zproject.settings → django_stubs_ext → django_stubs_ext.patch →
django.contrib.admin.options → django.contrib.contenttypes.models →
confirmation.models → django.conf → zproject.settings.

Signed-off-by: Anders Kaseorg <anders@zulip.com>
2024-04-17 16:49:03 -07:00
Alex Vandiver 5654d051f7 worker: Split into separate files.
This makes each worker faster to start up.
2024-04-16 23:00:02 -07:00
Alex Vandiver 1424a2e748 documentation: Move OpenGraph description updating out of middleware.
This middleware was highly-specific to a set of URLs, and pulled in a
beautifulsoup dependency for Tornado.  Move it closer to where it is
used, minimizing action at a distance, as well as trimming out a
dependency.
2024-04-16 10:41:45 -07:00
Mateusz Mandera 066de96a86 uploads: Implement 5GB/user quota for paid orgs on Zulip Cloud.
Fixes #28621

Till now, this was actually a flat 50GB despite what the /plans/ page
says and was adjusted flexibly when somebody asked for a higher limit.

This actually implements the advertised formula, but changing it to
5GB/user since that's a more reasonable limit.

Keeps the 50GB limit for sponsored Standard Free organizations and also
places it as the floor for the quota for paid orgs, to not lower this
for tiny orgs with less than 5 users.
2024-04-15 15:08:56 -07:00
Mateusz Mandera c9ca4e68e5 scim: Add config option to disable initial streams for guests.
When an organization (without open ability for anyone to join) invites a
guest user, the invitation prompts allows them to choose whether the
guest should be added to default streams or not. This is useful, because
since we don't have per-role default streams configs, they may want
default streams to be for full Members.

SCIM provisioning doesn't have this control, since a newly provisioned
user gets created via a direct do_create_user call, thus adding them to
the organization's default streams, with no workaround possible aside of
just getting rid of default streams in the organization.

To make provisioning guests in such an organization usable, we add a
simple config option to create them with no streams. It's configured by
adding
```
"create_guests_without_streams": True
```

to the config dict in settings.SCIM_CONFIG.
2024-04-11 12:28:26 -07:00
Alex Vandiver bd82c6edf9 settings: Support multiple database replicas in REMOTE_POSTGRES_HOST.
The libpq client library, used under the hood by psycopg2, supports
passing a list of hosts; they are tried sequentially until one of them
works[^1].

In cases where this is used, it is often the case that the other
servers are read-only hot spare replicas.  Since Zulip does not expect
to be in a read-only transaction, we require that the server that we
connect to be writable, by passing `target_session_attrs`[^2].

To limit how long we may block connecting to a potentially bad host
before moving on, we set `connection_timeout` from null (meaning
forever) to 2 (the lowest supported value)[^3], so we move on quickly
in the case that the server is running but unable to handle new
connections.

[^1]: https://www.postgresql.org/docs/current/libpq-connect.html#LIBPQ-MULTIPLE-HOSTS
[^2]: https://www.postgresql.org/docs/current/libpq-connect.html#LIBPQ-CONNECT-TARGET-SESSION-ATTRS
[^3]: https://www.postgresql.org/docs/current/libpq-connect.html#LIBPQ-CONNECT-CONNECT-TIMEOUT
2024-04-04 16:48:58 -07:00
Anders Kaseorg d8ebb2db95 auth: Avoid deprecated django.contrib.auth.views.logout_then_login.
It’s removed in Django 5.0.

Signed-off-by: Anders Kaseorg <anders@zulip.com>
2024-04-04 16:27:58 -07:00
Anders Kaseorg ac5161f439 tests: Downgrade deprecated SHA1PasswordHasher to MD5PasswordHasher.
SHA1PasswordHasher will be removed in Django 5.1.  MD5PasswordHasher
will remain for exactly this purpose of speeding up tests.

Use MD5PasswordHasher by default, but leave SHA1PasswordHasher in the
list for compatibility with test databases that have already been
generated.  Once some other change forces test databases to be
rebuilt, we can remove SHA1PasswordHasher.

Signed-off-by: Anders Kaseorg <anders@zulip.com>
2024-04-04 12:43:54 -07:00
roanster007 c7a08f3b77 settings: Add permission to enforce unique names in realm.
Previously, users were allowed to signup or change their names to
those which already existed in the realm.

This commit adds an Organization Permission, that shall enforce
users to use unique names while signing up or changing their
names. If a same or normalized full name is found in realm,
then a validation error is thrown.

Fixes #7830.
2024-04-02 14:55:59 -07:00
Anders Kaseorg 807a4428f6 compose_validate: Remove autosubscribe feature.
This was only used in the undocumented narrow_stream mode, and relied
on a deprecated synchronous XHR request.

Signed-off-by: Anders Kaseorg <anders@zulip.com>
2024-03-28 09:06:48 -07:00
Alex Vandiver 9451d08bb9 worker: Split out worker sampling rate, and add Sentry transactions. 2024-03-21 12:46:13 -07:00
Alex Vandiver f64b9475c1 sentry: Optionally enable tracing, with transactions and spans. 2024-03-21 12:46:13 -07:00
Alex Vandiver 6ad777c86f dev_urls: Make requests to /docs redirect to the index.
This makes it easier to browse to the docs in development mode, and
more closely matches ReadTheDocs production.
2024-03-21 11:27:14 -07:00
Anders Kaseorg 71e1b3c91b sentry: Fix type error in add_context.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2024-03-21 08:59:17 -07:00
Alex Vandiver c13e3dee24 katex: Replace subprocess call with minimal external service.
Replace a separate call to subprocess, starting `node` from scratch,
with an optional standalone node Express service which performs the
rendering.  In benchmarking, this reduces the overhead of a KaTeX call
from 120ms to 2.8ms.  This is notable because enough calls to KaTeX in
a single message would previously time out the whole message
rendering.

The service is optional because he majority of deployments do not use
enough LaTeX to merit the additional memory usage (60Mb).

Fixes: #17425.
2024-03-15 15:34:12 -07:00
Alex Vandiver 1cba83f9c5 settings: Use bool-ish get_config on postgresql.missing_dictionaries. 2024-03-15 15:34:12 -07:00
Alex Vandiver 0f70ab7679 config: Use logic from zulip_tools, to support bools. 2024-03-15 15:34:12 -07:00
Mateusz Mandera e39f400f94 remote_billing: Make "plan management" always available.
Just shows a config error page if the bouncer is not enabled. Uses a new
endpoint for this so that it can work nicely for both browser and
desktop app clients.
It's necessary, because the desktop app expects to get a json response
with either an error or billing_access_url to redirect to. Showing a
nice config error page can't be done via the json error mechanism, so
instead we just serve a redirect to the new error page, which the app
will open in the browser in a new window or tab.
2024-03-05 11:53:51 -08:00
Mateusz Mandera da9e4e6e54 backends: Implementation of restricting certain backends by plan.
Only affects zulipchat, by being based on the BILLING_ENABLED setting.

The restricted backends in this commit are
- AzureAD - restricted to Standard plan
- SAML - restricted to Plus plan, although it was already practically
  restricted due to requiring server-side configuration to be done by us

This restriction is placed upon **enabling** a backend - so
organizations that already have a backend enabled, will continue to be
able to use it. This allows us to make exceptions and enable a backend
for an org manually via the shell, and to grandfather organizations into
keeping the backend they have been relying on.
2024-03-05 11:48:58 -08:00
Mateusz Mandera fdbdf8c620 backends: Add ZulipAuthMixin inheritance to ZulipRemoteUserBackend.
By convention, all our backends inherit form ZulipAuthMixin. This is
helpful to have a single place if we want to add some class attributes
that all the backends should have.
2024-03-05 11:48:58 -08:00
Mateusz Mandera 634015411a update_analytics_count: Use a correct lock mechanism.
Adds a re-usable lockfile_nonblocking helper to context_managers.

Relying on naive `os.mkdir` is not enough especially now that the
successful operation of this command is necessary for push notifications
to work for many servers.

We can't use `lockfile` context manager from
`zerver.lib.context_managers`, because we want the custom behavior of
failing if the lock can't be acquired, instead of waiting.
That's because if an instance of this gets stuck, we don't want to start
queueing up more processes waiting forever whenever the cronjob runs
again and fail->exit is preferrable instead.
2024-03-05 10:21:14 -08:00
Anders Kaseorg 869d9d9a79 ruff: Fix RUF025 Unnecessary dict comprehension for iterable.
This is a preview rule, not yet enabled by default.

Signed-off-by: Anders Kaseorg <anders@zulip.com>
2024-03-01 09:30:04 -08:00
Alex Vandiver da6b0b1cc6 tornado: Add a web_reload_clients endpoint to notify web clients. 2024-02-15 15:42:50 -08:00
Alex Vandiver e6fa1f5436 email_mirror_message: Move endpoint under /api/internal/.
This also has the side effect that it saves the endpint from being
improperly redirected by the HostDomainMiddleware's canonicalization
code.
2024-02-15 15:42:50 -08:00
Alex Vandiver 84fa9be73a tornado: Move the /notify-tornado endpoint, and document it better. 2024-02-15 15:42:50 -08:00
Alex Vandiver b23d90ed62 puppet: Rename puppet/zulip_ops to puppet/kandra.
This makes for easier tab-completion, and also is a bit more explicit
about the expected consumer.
2024-02-06 17:56:27 -08:00
Anders Kaseorg 41f253774d Revert "zproject: Prevent having exactly 17/18 middlewares, for Python 3.11 bug."
This reverts commit cf0b803d50.
2024-02-05 19:57:21 -05:00
Anders Kaseorg 93198a19ed requirements: Upgrade Python requirements.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2024-01-29 10:41:54 -08:00
Mateusz Mandera 649b4885e8 remote_billing: Add rate-limiting for confirmation email sending.
These should be rate-limited by both IP using our regular
sends_email_by_ip bucket as well as by server, using a new bucket
dedicated to this.
2024-01-18 12:06:16 -08:00
Mateusz Mandera fc247cba3f remote_billing: Fix /self-hosted-billing/ handling for desktop app.
When you click "Plan management", the desktop app opens
/self-hosted-billing/ in your browser immediately. So that works badly
if you're already logged into another account in the browser, since that
session will be used and it may be for a different user account than in
the desktop app, causing unintended behavior.

The solution is to replace the on click behavior for "Plan management"
in the desktop app case, to instead make a request to a new endpoint
/json/self-hosted-billing, which provides the billing access url in a
json response. The desktop app takes that URL and window.open()s it (in
the browser). And so a remote billing session for the intended user will
be obtained.
2024-01-15 16:50:48 -08:00
Mateusz Mandera 80f5963bbc auth: Add a configurable wrapper around authenticate calls. 2024-01-15 12:18:48 -08:00
Aman Agrawal f96d58cf02 settings: Set default free trial days for basic plan to 30 days. 2024-01-12 08:50:51 -08:00
Alex Vandiver 75d6f35069 s3: Add a setting for S3 addressing style.
This controls if boto3 attempts to use
`https://bucketname.endpointname/` or `https://endpointname/bucket/`
as its prefix.  See
https://botocore.amazonaws.com/v1/documentation/api/latest/reference/config.html

Fixes: #28424.
2024-01-05 11:12:18 -08:00
Anders Kaseorg 27c0b507af models: Extract zerver.models.custom_profile_fields.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2023-12-16 22:08:44 -08:00
Anders Kaseorg cd96193768 models: Extract zerver.models.realms.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2023-12-16 22:08:44 -08:00
Anders Kaseorg 45bb8d2580 models: Extract zerver.models.users.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2023-12-16 22:08:44 -08:00
Tim Abbott 3dc886a1cd settings: Simplify testing push bouncer.
We already override PUSH_NOTIFICATION_BOUNCER_URL in
test_extra_settings.py, so making this change should have as its only
impact making it a bit easier to test the push notifications bouncer
manually in a development environment.

I submitted a related PR to the mobile app documentation for testing
the push notifications software against a production server motivated
by this.
2023-12-10 17:36:25 -08:00
Aman Agrawal ce56e19d1c stripe: Separate activation of free trial for remote realm/server.
Add a separate setting to only enable free trial for remote
realm / server.
2023-12-10 15:18:01 -08:00
Aman Agrawal ccd60bc7e2 settings: Use original FREE_TRIAL_DAYS for cloud free trials.
* Renamed FREE_TRIAL_DAYS to CLOUD_FREE_TRIAL_DAYS.
* Used `cloud_free_trial_days` to get free trial days secret.
2023-12-10 15:18:01 -08:00
Tim Abbott 22d59f1132 typing notifications: Increase various time constants.
See https://chat.zulip.org/#narrow/stream/6-frontend/topic/typing.20notifications.20efficiency/near/1664991.

As detailed in that discussion,
`TYPING_STARTED_EXPIRY_PERIOD_MILLISECONDS` and
`TYPING_STARTED_WAIT_PERIOD_MILLISECONDS` are coupled constants, and
the impact of them being large is mainly that if a user closes their
computer or loses network in the middle of typing something (not
exactly a common occasion), then the client will suggest they kept on
typing longer than they in fact did.

There's a substantial decrease in resources consumed by this feature
associated with raising `TYPING_STARTED_WAIT_PERIOD_MILLISECONDS`, so
that at least seems worth doing.

Meanwhile, because TYPING_STOPPED_WAIT_PERIOD_MILLISECONDS measures
how long we should wait before deciding to stop suggesting a user is
still typing if they were previously typing a message but paused doing
so without closing the compose box (example causes being stepping away
from the computer, tabbing to go look something up, or just thinking
for a bit).

On the one hand, even the original 5 seconds is a fairly long time to
pause to think without touching the keyboard; on the other hand,
sitting with text you've written in the compose box is likely still a
quite high intent-to-send-soon state. Increasing this to 12 seconds
seems like a reasonable balance between being too trigger-happy here
here and avoiding someone who left their computer appearing like they
are still typing for a long time afterwards.
2023-12-09 17:05:59 -08:00
Aman Agrawal 111df40e05 context_processors: Add common context to be used in corporate pages.
Context is only available for functions inside corporate app.
2023-12-08 12:26:12 -08:00
Prakhar Pratyush ac8af3d6de urls: Add a new endpoint for hotspot and deprecate the old one.
This commit adds a new endpoint 'users/me/onboarding_steps'
deprecating the older 'users/me/hotspots' to mark hotspot as read.

We also renamed the view `mark_hotspot_as_read` to
`mark_onboarding_step_as_read`.

Reason: Our plan is to make this endpoint flexible to support
other types of UI elements not just restricted to hotspots.
2023-12-06 18:19:20 -08:00
Tim Abbott 9d3ef7f589 settings: Print about custom settings from runtornado. 2023-12-05 12:33:34 -08:00
Tim Abbott a7c40748fd dev_settings: Allow user to override settings in a git-ignored file.
This should make doing an ongoing development project related to a
settings variant significantly more convenient.
2023-12-04 09:50:14 -08:00
Tim Abbott 2d1b217441 settings: Refactor how TEST_SUITE is configured.
This is designed to allow us to access the value inside
configured_settings.py
2023-12-04 09:50:14 -08:00
Prakhar Pratyush d8cf12eaaa send_email: Improve configurability for outgoing email sender name.
Currently, the sender names for outgoing emails sent by Zulip
are hardcoded. It should be configurable for self-hosted systems.

This commit makes the 'Zulip' part a variable in the following
email sender names: 'Zulip Account Security', 'Zulip Digest',
and 'Zulip Notifications' by introducing a settings variable
'SERVICE_NAME' with the default value as f"{EXTERNAL_HOST} Zulip".

Fixes: #23857
2023-11-29 14:20:01 -08:00
Mateusz Mandera 2a65183991 tests: Add test for nocoverage userAccountControl case in ldap auth.
This logic has been #nocoverage since its implementation, but since this
is an authentication codepath, it seems important for it to have a test.
2023-11-24 13:38:23 -08:00
Mateusz Mandera 3958743b33 corporate: Add prototype authentication system for self-hosters.
This makes it possible for a self-hosted realm administrator to
directly access a logged-page on the push notifications bouncer
service, enabling billing, support contacts, and other administrator
for enterprise customers to be managed without manual setup.
2023-11-22 17:03:47 -08:00
Mateusz Mandera 1ec0d5bd9d requests: Add SELF_HOSTING_MANAGEMENT_SUBDOMAIN. 2023-11-22 14:22:26 -08:00
Mateusz Mandera 2149cd236f settings: Add new SIGNED_ACCESS_TOKEN_VALIDITY_IN_SECONDS setting. 2023-11-22 14:22:26 -08:00
Sahil Batra dbcc9ea826 users: Update presence and user status code to support restricted users.
The presence and user status update events are only sent to accessible
users, i.e. guests do not receive presence and user status updates for
users they cannot access.
2023-11-21 23:58:45 -08:00
Alex Vandiver 636afa0102 computed_settings: Provide a helper for configuring a new log file. 2023-11-21 10:49:57 -08:00
Alex Vandiver 7233841171 analytics: Move logging config into LOGGING, use "zulip.analytics".
This should not reuse (and reconfigure!) the "zulip.management"
logger.
2023-11-21 10:49:57 -08:00
Mateusz Mandera 8254b74019 auth: Allow easier bouncer testing in dev env. 2023-11-17 18:32:49 -08:00
Mateusz Mandera 1800b2c797 ldap: Tweak AUTH_LDAP_ADVANCED_REALM_ACCESS_CONTROL behavior.
The original behavior of this setting was to disable LDAP
authentication for any realms not configured to use it. This was an
arbitrary choice, and its only value was to potentially help catch
typos for users who are lazy about testing their configuration.

Since it makes it a very inconvenient to potentially host multiple
organizations with different LDAP configurations, remove that
behavior.
2023-11-17 14:40:26 -08:00
Greg Price 528a76a419 push_notifs: Set APNs topic individually on each notification.
This makes it possible to send notifications to more than one app ID
from the same server: for example, the main Zulip mobile app and the
new Flutter-based app, which has a separate app ID for use through its
beta period so that it can be installed alongside the existing app.
2023-11-16 12:03:30 -08:00
Greg Price ff32d51700 push_notifs: Support APNs token auth, as well as cert auth.
This will make it possible to send notifications to multiple
distinct app IDs over the same connection.
2023-11-16 12:03:30 -08:00
Sahil Batra 3c8701ee36 streams: Add API endpoint to get stream email.
This commit adds new API endpoint to get stream email which is
used by the web-app as well to get the email when a user tries
to open the stream email modal.

The stream email is returned only to the users who have access
to it. Specifically for private streams only subscribed users
have access to its email. And for public streams, all non-guest
users and only subscribed guests have access to its email.
All users can access email of web-public streams.
2023-11-16 13:25:33 -05:00
Tim Abbott 2e2997bd7d typing: Limit typing notifications in large streams. 2023-11-15 09:42:25 -08:00
Greg Price 9072ddda05 push_notifs: Remove remaining references to ZULIP_IOS_APP_ID setting. 2023-11-07 16:19:42 -08:00
Greg Price d1e4347cb2 push_notifs: Keep APNS_CERT_FILE as None in tests.
In 0b3f7a5a6 we started automatically setting this in dev if we
found a cert file in an appropriate place.  But for running tests,
we don't want such variability.  Set it back to None there.
2023-11-07 16:19:42 -08:00
Greg Price 0b3f7a5a6b push_notifs: In dev, automatically use dev APNs cert if provided
This lets us simplify the instructions for testing push notifications
with a development client on iOS.
2023-11-02 17:25:41 -07:00
Esther Anierobi e957decd12
email: Drop support for SEND_MISSED_MESSAGE_EMAILS_AS_USER. (#27223)
Originally, this was how the notification emails worked, but that was changed
in 797a7ef97b, with this old behavior 
available as an option.

The footer and from address of emails that are sent when this
setting is set to True are confusing, especially when more people
are involved in a stream and since we have changed the way we send
emails, it should be removed. It’s also not widely used.

Fixes #26609.
2023-10-20 16:38:43 -07:00
Mateusz Mandera d43be2b7c4 push_notifs: Add endpoint for sending a test notification.
Fixes #23997
2023-10-12 18:15:00 -07:00
Tam Le f8a74831b0 run-dev: Add flag to allow JSON requests through HTTPS proxy. 2023-10-12 17:59:29 -07:00
Anders Kaseorg a50eb2e809 mypy: Enable new error explicit-override.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2023-10-12 12:28:41 -07:00
Alex Vandiver a21971ceae config_error: Split error pages into their own pages.
This is much easier to maintain than a giant set of if statements.
2023-10-11 17:13:01 -07:00
Alex Vandiver 5506dffa36 config_error: Coalesce redundant dicts. 2023-10-11 17:13:01 -07:00
Alex Vandiver 536aa32255 views: Extract config_error view function. 2023-10-11 17:13:01 -07:00
Simon Michalke b6a25840a1 zerver: Implement ldap group synchronization.
Fixes #9957.

Co-authored-by: Mateusz Mandera <mateusz.mandera@zulip.com>
2023-10-05 16:12:52 -07:00
Mateusz Mandera a095c34503 saml: Add OneLogin_Saml2_ValidationError to caught parsing exceptions.
This is an exception that we should be generally catching like the
others, which will give our standard /login/ redirect and proper logging
- as opposed to a 500 if we don't catch.

Addresses directly a bug we occurred in the wild, where a SAMLResponse
was submitted without issuers specified in a valid way, causing this
exception. The added test tests this specific type of scenario.
2023-09-27 10:32:18 -07:00
Alex Vandiver 5ee4b642ad views: Add a /health healthcheck endpoint.
This endpoint verifies that the services that Zulip needs to function
are running, and Django can talk to them.  It is designed to be used
as a readiness probe[^1] for Zulip, either by Kubernetes, or some other
reverse-proxy load-balancer in front of Zulip.  Because of this, it
limits access to only localhost and the IP addresses of configured
reverse proxies.

Tests are limited because we cannot stop running services (which would
impact other concurrent tests) and there would be extremely limited
utility to mocking the very specific methods we're calling to raising
the exceptions that we're looking for.

[^1]: https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-startup-probes/
2023-09-20 09:53:59 -07:00
Anders Kaseorg ddba558f1d mypy: Remove no_implicit_reexport override.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2023-09-08 16:46:44 -07:00
Zixuan James Li 1e1f98edb2 transaction_tests: Remove testing URL.
Rewrite the test so that we don't have a dedicated URL for testing.
dev_update_subgroups is called directly from the tests without using the
test client.
2023-09-06 09:13:02 -07:00
Zixuan James Li a081428ad2 user_groups: Make locks required for updating user group memberships.
**Background**

User groups are expected to comply with the DAG constraint for the
many-to-many inter-group membership. The check for this constraint has
to be performed recursively so that we can find all direct and indirect
subgroups of the user group to be added.

This kind of check is vulnerable to phantom reads which is possible at
the default read committed isolation level because we cannot guarantee
that the check is still valid when we are adding the subgroups to the
user group.

**Solution**

To avoid having another transaction concurrently update one of the
to-be-subgroup after the recursive check is done, and before the subgroup
is added, we use SELECT FOR UPDATE to lock the user group rows.

The lock needs to be acquired before a group membership change is about
to occur before any check has been conducted.

Suppose that we are adding subgroup B to supergroup A, the locking protocol
is specified as follows:

1. Acquire a lock for B and all its direct and indirect subgroups.
2. Acquire a lock for A.

For the removal of user groups, we acquire a lock for the user group to
be removed with all its direct and indirect subgroups. This is the special
case A=B, which is still complaint with the protocol.

**Error handling**

We currently rely on Postgres' deadlock detection to abort transactions
and show an error for the users. In the future, we might need some
recovery mechanism or at least better error handling.

**Notes**

An important note is that we need to reuse the recursive CTE query that
finds the direct and indirect subgroups when applying the lock on the
rows. And the lock needs to be acquired the same way for the addition and
removal of direct subgroups.

User membership change (as opposed to user group membership) is not
affected. Read-only queries aren't either. The locks only protect
critical regions where the user group dependency graph might violate
the DAG constraint, where users are not participating.

**Testing**

We implement a transaction test case targeting some typical scenarios
when an internal server error is expected to happen (this means that the
user group view makes the correct decision to abort the transaction when
something goes wrong with locks).

To achieve this, we add a development view intended only for unit tests.
It has a global BARRIER that can be shared across threads, so that we
can synchronize them to consistently reproduce certain potential race
conditions prevented by the database locks.

The transaction test case lanuches pairs of threads initiating possibly
conflicting requests at the same time. The tests are set up such that exactly N
of them are expected to succeed with a certain error message (while we don't
know each one).

**Security notes**

get_recursive_subgroups_for_groups will no longer fetch user groups from
other realms. As a result, trying to add/remove a subgroup from another
realm results in a UserGroup not found error response.

We also implement subgroup-specific checks in has_user_group_access to
keep permission managing in a single place. Do note that the API
currently don't have a way to violate that check because we are only
checking the realm ID now.
2023-08-24 17:21:08 -07:00
Samuel 3ce7b77092 typing: Add typing constants to the post register api response.
Adds typing notification constants to the response given by
`POST /register`. Until now, these were hardcoded by clients
based on the documentation for implementing typing notifications
in the main endpoint description for `api/set-typing-status`.

This change also reflects updating the web-app frontend code
to use the new constants from the register response.

Co-authored-by: Samuel Kabuya <samuel.mwangikabuya@kibo.school>
Co-authored-by: Wilhelmina Asante <wilhelmina.asante@kibo.school>
2023-08-23 16:36:44 -07:00
Zixuan James Li 37660dd0e7 linkifier: Support reordering linkifiers.
This adds API support to reorder linkifiers and makes sure that the
returned lists of linkifiers from `GET /events`, `POST /register`, and
`GET /realm/linkifiers` are always sorted with the order that they
should processed when rendering linkifiers.

We set the new `order` field to the ID with the migration. This
preserves the order of the existing linkifiers.

New linkifiers added will always be ordered the last. When reordering,
the `order` field of all linkifiers in the same realm is updated, in
a manner similar to how we implement ordering for
`custom_profile_fields`.
2023-08-14 15:21:48 -07:00
Anders Kaseorg 562a79ab76 ruff: Fix PERF401 Use a list comprehension to create a transformed list.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2023-08-07 17:23:55 -07:00
Anders Kaseorg 733083c65d ruff: Collapse short multi-line import statements.
isort did this by default, though it’s unclear whether that was
intended; see https://github.com/astral-sh/ruff/issues/4153.

Signed-off-by: Anders Kaseorg <anders@zulip.com>
2023-08-02 17:41:41 -07:00
Anders Kaseorg 3b09197fdf ruff: Fix RUF015 Prefer `next(...)` over single element slice.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2023-07-23 15:20:53 -07:00
Anders Kaseorg b285813beb error_notify: Remove custom email error reporting handler.
Restore the default django.utils.log.AdminEmailHandler when
ERROR_REPORTING is enabled.  Those with more sophisticated needs can
turn it off and use Sentry or a Sentry-compatible system.

Signed-off-by: Anders Kaseorg <anders@zulip.com>
2023-07-20 11:00:09 -07:00
Alex Vandiver d957559371 uploads: Allow uploads to set storage class.
Uploads are well-positioned to use S3's "intelligent tiering" storage
class.  Add a setting to let uploaded files to declare their desired
storage class at upload time, and document how to move existing files
to the same storage class.
2023-07-19 16:19:34 -07:00
Anders Kaseorg 63be67af80 logging_util: Remove dependence on get_current_request.
Pass the HttpRequest explicitly through the two webhooks that log to
the webhook loggers.

get_current_request is now unused, so remove it (in the same commit
for test coverage reasons).

Signed-off-by: Anders Kaseorg <anders@zulip.com>
2023-07-11 22:23:47 -07:00
Anders Kaseorg f66e2c3112 sentry: Remove dependence on get_current_request.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
2023-07-11 22:23:47 -07:00
Lauryn Menard dd59e83d54 welcome-emails: Make some code comments and docstrings more evergreen. 2023-07-11 14:15:52 -07:00
Alex Vandiver 8a77cca341 middleware: Detect reverse proxy misconfigurations.
Combine nginx and Django middlware to stop putting misleading warnings
about `CSRF_TRUSTED_ORIGINS` when the issue is untrusted proxies.
This attempts to, in the error logs, diagnose and suggest next steps
to fix common proxy misconfigurations.

See also #24599 and zulip/docker-zulip#403.
2023-07-02 16:20:21 -07:00
Alex Vandiver cf0b803d50 zproject: Prevent having exactly 17/18 middlewares, for Python 3.11 bug.
Having exactly 17 or 18 middlewares, on Python 3.11.0 and above,
causes python to segfault when running tests with coverage; see
https://github.com/python/cpython/issues/106092

Work around this by adding one or two no-op middlewares if we would
hit those unlucky numbers.  We only add them in testing, since
coverage is a requirement to trigger it, and there is no reason to
burden production with additional wrapping.
2023-07-02 16:20:21 -07:00