Users wanted a feature where they could specify
which users can create public streams and which users can
create private streams.
This splits stream creation code into two parts,
public and private stream creation.
Fixes#17009.
This is a somewhat subtle function, that deserves a few comments
explaining subtle details of its logic, and there's no good reason to
have multiple copies of that logic that are slightly inconsistent.
Because the main changes here are just checking for invariant
failures, the behavioral change here should be limited to ensuring
deactivated streams are not considered available even if they were
tagged as web public streams before deactivation.
User can now create web public stream via the /subscribe API.
So, when a web public stream present in the API request does not
exist, it will be created now by specifying the is_web_public
parameter. The parameter would have been ignored without this
commit.
The new error message is more clear about why, "User cannot create
stream with this settings." was bad English, and in any case removing
an unnecessary string is always an improvement for translators.
This adds a new class called MessageRenderingResult to contain the
additional properties we added to the Message object (like alert_words)
as well as the rendered content to ensure typesafe reference. No
behavioral change is made except changes in typing.
This is a preparatory change for adding django-stubs to the backend.
Related: #18777
The caller is supposed validate the stream and user realm match, but
since this is a security-sensitive function, we should have this
defensive code to protect against some validation bugs in the caller
leading to this being called incorrectly and returning True.
django.utils.translation.ugettext is a deprecated alias of
django.utils.translation.gettext as of Django 3.0, and will be removed
in Django 4.0.
Signed-off-by: Anders Kaseorg <anders@zulip.com>
A bug in the implementation of the can_forge_sender permission
(previously is_api_super_user) resulted in users with this permission
being able to send messages appearing as if sent by a system bots,
including to other organizations hosted by the same Zulip installation.
- The send message API had a bug allowing an api super user to
use forging to send messages to other realms' streams, as a
cross-realm bot. We fix this most directly by eliminating the
realm_str parameter - it is not necessary for any valid current use
case. The email gateway doesn't use this API despite the comment in
that block suggesting otherwise.
- The conditionals inside access_stream_for_send_message are changed up
to improve security. They were generally not ordered very well,
allowing the function to successfully return due to very weak
acceptance conditions - skipping the higher importance checks that
should lead to raising an error.
- The query count in test_subs is decreased because
access_stream_for_send_message returns earlier when doing its check
for a cross-realm bot sender - some subscription checking queries are
skipped.
- A linkifier test in test_message_dict needs to be changed. It didn't
make much sense in the first place, because it was creating a message
by a normal user, to a stream outside of the user's realm. That
shouldn't even be allowed.
We keep the error message same for all cases when a user is not
allowed to create streams for all values of create_stream_policy.
We raise error with different message for guest cases because it
is handled by decorators. We aim to change this behavior in future.
Explaining the details in error message isn't much important as
we do not show errors probably in API only, as we do not the show
the options itself in the frontend.
This commit adds a new option of STREAM_POST_POLICY_MODERATORS
in stream_post_policy which will allow only realm admins and
moderators to post in that stream.
We extract a helper which checks whether to allow the sender to send the
message to a stream according to the stream_post_policy. The purpose
of extracting it out is to avoid additional code for checking the access
for bot owners in case of bot sending the messages and instead calling
the handler two times - one time for sender and one time for bot owner if
sender is a bot.
This commit modifies the has_permission function to include
realm moderator role. Thus this adds a new option of moderators
only for create_stream_policy.
Though this automatically adds this option for invite_to_stream_policy
also, but we will keep other code for showing error and for tests
in a separate commit.
This commit changes the list_to_streams function to raise error
according to create_stream_policy value when a user cannot create
streams instead of same error for all cases.
This commit renames the is_new_member property in models.py
to is_provisional_member which will return true for any user
who is not a full member. We will add a condition in further
commit such that this returns 'False' for a moderator as we
will initially give all the rights to moderator that a full
member has.
We currently not allow new bots to send message in stream with post
policy as 'STREAM_POST_POLICY_RESTRICT_NEW_MEMBERS', but we should
allow them to send messages if their owner is a full member.
This will make it consistent with behavior in stream with post
policy as 'STREAM_POST_POLICY_ADMINS_ONLY' where we allow non admin
bots with owner as admin to send messages.
According to tests we should not allow bot without owners to
post in streams with STREAM_POST_POLICY_RESTRICT_NEW_MEMBERS.
But the code does not handle this and the related test passes
and raises error for case of bots without owner because the bot
is itself a new member.
This commit fixes this by adding a condition to check if there
is no bot owner and then raise error if there is no owner.
Let the callers access stream.recipient as needed.
It costs the same, and some of the callers can
actually stop caring about the actual Recipient
object.
We no longer do O(N) queries to get existing streams.
This is a somewhat contrived use case--generally, we
are not trying to re-subscribe a user to several
streams. Still, we want to avoid this.
This commit also makes `test_bulk_subscribe_many`
do more work, and the change to the test helped
me discover this bug.
We modify access_stream_for_delete_or_update function to return
Subscription object also along with stream. This change will be
helpful in avoiding an extra query to get subscription object in
code for updating subscription role.
For streams in which only full members are allowed to post,
we block guest users from posting there.
Guests users were blocked from posting to admin only streams
already. So now, guest users can only post to
STREAM_POST_POLICY_EVERYONE streams.
This is not a new feature but a bugfix which should have
happened when implementing full member stream policy / guest users.
For web-public streams, clients can access full topic history
without being authenticated. They only need to additionally
send "streams:web-public" narrow with their request like all
the other web-public queries.
The new Stream administrator role is allowed to manage a stream they
administer, including:
* Setting properties like name, description, privacy and post-policy.
* Removing subscribers
* Deactivating the stream
The access_stream_for_delete_or_update is modified and is used only
to get objects from database and further checks for administrative
rights is done by check_stream_access_for_delete_or_update.
We have also added a new exception class StreamAdministratorRequired.
Via API, users can now access messages which are in web-public
streams without any authentication.
If the user is not authenticated, we assume it is a web-public
query and add `streams:web-public` narrow if not already present
to the narrow. web-public streams are also directly accessible.
Any malformed narrow which is not allowed in a web-public query
results in a 400 or 401. See test_message_fetch for the allowed
queries.
Modifies filter_stream_authorization so that web-public streams are
added in the list of authorized streams that a guest user can
subscribe.
This commit is part of PR #14638 that aims to allow guest users
to browse and subscribe to web-public streams.
In this commit, we grant guest users access to stream history,
send message and common stream data of web-public streams.
This is part of PR #14638 that aims to allow guest users to
browse and subscribe to web-public streams.
This change makes the flow more coherent by instead of checking,
in the last condition, if the user isn't authorized to access that
stream, check if they are, as it is done in the other checks. Only
if all the conditions are false, which means that the user doesn't
have access to that stream, the stream is added to the
unauthorized_streams list.
Added new Event Type in AbstractRealmAuditLog STREAM_CREATED.
Since we finally create streams in create_stream_if_needed function
in zerver/lib/streams.py so logged realm_audit there.
Passed acting_user when create_stream_if_needed or ensure_stream
function is called.
Added tests in test_audit_log.
Prior to this commit whenever convert was imported from zerver.lib.markdown
it was aliased as markdown_convert for readability.
This commit rename convert function to markdown_convert so that it can be
directly import it without aliasing and without compromising readability.
This commit is first of few commita which aim to change all the
bugdown references to markdown. This commits rename the files,
file path mentions and change the imports.
Variables and other references to bugdown will be renamed in susequent
commits.
This commit adds backend support for setting message_retention_days
while creating streams and updating it for an existing stream. We only
allow organization owners to set/update it for a stream.
'message_retention_days' field for a stream existed previously also, but
there was no way to set it while creating streams or update it for an
exisiting streams using any endpoint.
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>
Shlok Patel
Sahil Batra
Ganesh Pawar
Tim Abbott
Aman Agrawal
Abhijeet Prasad Bodas
Anders Kaseorg
PIG208
Mateusz Mandera
sahil839
Steve Howell
Clara Dantas
Alex Vandiver
arpit551
Mohit Gupta