Providing a signed Camo URL for arbitrary URLs opened the server up to
being an open redirector. Return 403 if the URL is not a user upload,
and the backend image if it is. Since we do not have ImageAttachment
rows for uploads at a time we wrote `/thumbnail?` URLs, return the
full-size content.
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.
Earlier, after a successful POST request on find accounts page
users were redirected to a URL with the emails (submitted via form)
as URL parameters. Those raw emails in the URL were used to
display on a template.
We no longer redirect to such a URL; instead, we directly render
a template with emails passed as a context variable.
Fixes part of #3128
In this commit, we add a new dropdown 'Organization language' on
the `/new` and `/realm/register` pages. This dropdown allows setting
the language of the organization during its creation. This allows
messages from Welcome Bot and introductory messages in streams to be
internationalized.
Fixes a part of #25729.
Adds a new onboarding email `onboarding_team_to_zulip` for the user
who created the new Zulip organization.
Co-authored by: Alya Abbott <alya@zulip.com>
Instead of having "business" as the default organization type
for demo organizations in the dev environment, we set it to
"unspecified". This way a more generic zulip guide email will
be sent as part of the onboarding process for users invited
to try out the demo organization if the owner has not yet
updated the organization type.
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.
Since an email address is not required to create a demo organization,
we need a Zulip API email address for the web-app to use until the
owner configures an email for their account.
Here, we set the owner's `email_address_visibility` to "Nobody" when
the owner's account is created so that the Zulip API email field in
their profile is a fake email address string.
To make creation of demo organizations feel lightweight for users,
we do not want to require an email address at sign-up. Instead an
empty string will used for the new realm owner's email. Currently
implements that for new demo organizations in the development
environment.
Because the user's email address does not exist, we don't enqueue
any of the welcome emails upon account/realm creation, and we
don't create/send new login emails.
This is a part of #19523.
Co-authored by: Tim Abbott <tabbott@zulip.com>
Co-authored by: Lauryn Menard <lauryn@zulip.com>
**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.
We have historically cached two types of values
on a per-request basis inside of memory:
* linkifiers
* display recipients
Both of these caches were hand-written, and they
both actually cache values that are also in memcached,
so the per-request cache essentially only saves us
from a few memcached hits.
I think the linkifier per-request cache is a necessary
evil. It's an important part of message rendering, and
it's not super easy to structure the code to just get
a single value up front and pass it down the stack.
I'm not so sure we even need the display recipient
per-request cache any more, as we are generally pretty
smart now about hydrating recipient data in terms of
how the code is organized. But I haven't done thorough
research on that hypotheseis.
Fortunately, it's not rocket science to just write
a glorified memoize decorator and tie it into key
places in the code:
* middleware
* tests (e.g. asserting db counts)
* queue processors
That's what I did in this commit.
This commit definitely reduces the amount of code
to maintain. I think it also gets us closer to
possibly phasing out this whole technique, but that
effort is beyond the scope of this PR. We could
add some instrumentation to the decorator to see
how often we get a non-trivial number of saved
round trips to memcached.
Note that when we flush linkifiers, we just use
a big hammer and flush the entire per-request
cache for linkifiers, since there is only ever
one realm in the cache.
This commit updates the select_related calls in queries to
get UserProfile objects in dev_login code to pass "realm"
as argument to select_related call.
Also, note that "realm" is the only non-null foreign key field
in UserProfile object, so select_related() was only fetching
realm object previously as well. But we should still pass "realm"
as argument in select_related call so that we can make sure that
only required fields are selected in case we add more foreign
keys to UserProfile in future.
The initial followup_day1 email confirms that the new user account
has been successfully created and should be sent to the user
independently of an organization's setting for send_welcome_emails.
Here we separate out the followup_day1 email into a separate function
from enqueue_welcome_emails and create a helper function for setting
the shared welcome email sender information.
The followup_day1 email is still a scheduled email so that the initial
account creation and log-in process for the user remains unchanged.
Fixes#25268.
Previously, we had an architecture where CSS inlining for emails was
done at provision time in inline_email_css.py. This was necessary
because the library we were using for this, Premailer, was extremely
slow, and doing the inlining for every outgoing email would have been
prohibitively expensive.
Now that we've migrated to a more modern library that inlines the
small amount of CSS we have into emails nearly instantly, we are able
to remove the complex architecture built to work around Premailer
being slow and just do the CSS inlining as the final step in sending
each individual email.
This has several significant benefits:
* Removes a fiddly provisioning step that made the edit/refresh cycle
for modifying email templates confusing; there's no longer a CSS
inlining step that, if you forget to do it, results in your testing a
stale variant of the email templates.
* Fixes internationalization problems related to translators working
with pre-CSS-inlined emails, and then Django trying to apply the
translators to the post-CSS-inlined version.
* Makes the send_custom_email pipeline simpler and easier to improve.
Signed-off-by: Daniil Fadeev <fadeevd@zulip.com>
Adds the user ID to the return values for the `/fetch_api_key` and
`/dev_fetch_api_key` endpoints. This saves clients like mobile a
round trip to the server to get the user's unique ID as it is now
returned as part of the log in flow.
Fixes#24980.
Since we have updated the registration code to use
PreregistrationRealm objects for realm creation in
previous commits, some of the code has become
redundant and this commit removes it.
We remove the following code -
- The modification to PreregistrationUser objects in
process_new_human_user can now be done unconditionally
because prereg_user is passed only during user creation
and not realm creation. And we anyway do not expect
any PreregistrationUser objects inside the realm
during the creation.
- There is no need of "realm_creation" parameter in
create_preregistration_user function, since we now
use create_preregistration_realm during realm creation.
Fixes part of #24307.
Black 23 enforces some slightly more specific rules about empty line
counts and redundant parenthesis removal, but the result is still
compatible with Black 22.
(This does not actually upgrade our Python environment to Black 23
yet.)
Signed-off-by: Anders Kaseorg <anders@zulip.com>
With the new signature of has_request_variables, we can now use
`HttpResponseBase` as the return type of the decorated function.
Signed-off-by: Zixuan James Li <p359101898@gmail.com>
Type inference does not work when the default value of `REQ` is
non-optional while `ResultT` is optional. Mypy tries to unify
`json_validator` with `Validator[int]` in `invite_users_backend` instead
of the desired `Validator[Optional[int]]` because of the presence of the
default value `settings.INVITATION_LINK_VALIDITY_MINUTES`, which is
inferred to be an `int`. Mypy does not resort to a less specific type but
instead gives up early.
This issue applies to invite_users_backend and generate_multiuse_invite_backend
in zerver.views.invite.
There might be a way that we can add an overload to get around this, but
it's probably not worth the complexity until it comes up again more frequently.
We do in fact allow `invite_expires_in_minutes` to be `None` in places
like `do_invite_users`, `invite_users_backend`, etc, and we have
`settings.INVITATION_LINK_VALIDITY_MINUTES` as the default for them. So
it makes sense to allow having an optional value for this setting. And
since there isn't a way to independently set the value of this constant,
we move it to a different place.
TODO:
This is a temporary fix that should be refactored when the bug is fixed.
The encountered mypy issue: https://github.com/python/mypy/issues/13234
Signed-off-by: Zixuan James Li <p359101898@gmail.com>
Since we in fact are using the django test client to generate a response
here, the return type should be `TestHttpResponse` instead.
Signed-off-by: Zixuan James Li <p359101898@gmail.com>
Instead of using `request.POST` to access `forward_address` for
the parameter used in `set_forward_address` in `email_page`, adds
`has_request_variable` decorator and an optional `forward_address`
parameter through the `REQ` framework.
Adds an assertion that `forward_address` is not `None` for `POST`
requests.
Instead of mutating the original `QueryDict`, we shall create a new
one when updating the `QueryDict`.
Signed-off-by: Zixuan James Li <p359101898@gmail.com>
Anders Kaseorg
Alex Vandiver
Kenneth Rodrigues
Vector73
Aman Agrawal
Mahhheshh
swayam0322
Mateusz Mandera
Hemant Umre
Lauryn Menard
Zixuan James Li
Eeshan Garg
Steve Howell
Sahil Batra
Daniil Fadeev