We didn't have thumbnailing for images coming from data import and this
commit adds the functionality.
There are a few fundamental issues that the implementation needs to
solve.
1. The images come from an untrusted source and therefore we don't want
to just pass them through to thumbnailing without checking. For that
reason, we cannot just import ImageAttachment rows from the export
data, even for zulip=>zulip imports.
The right way to process images is to pass them to maybe_thumbail(),
which runs libvips_check_image() on them to verify we're okay with
thumbnailing, creates ImageAttachment rows for them and sends them
to the thumbnailing queue worker. This approach lets us handle both
zulip=>zulip and 3rd party=>zulip imports in the same way,
2. There is a somewhat circular dependency between the Message,
Attachment and ImageAttachment import process:
- ImageAttachments would ideally be created after importing
Attachments, but they need to already exist at the time of Message
import. Otherwise, the markdown processor doesn't know it has to add
HTML for image previews to messages that reference images. This would
mean that messages imported from 3rd party tools don't get image
previews.
- Attachments only get created after Message import however, due to the
many-to-many relationship between Message and Attachment.
This is solved by fixing up some data of Attachments pre-emptively, such
as the path_ids. This gives us the necessary information for creating
ImageAttachments before importing Messages.
While we generate ImageAttachment rows synchronously, the actual
thumbnailing job is sent to the queue worker. Theoretically, the worker
could be very backlogged and not process the thumbnails anytime soon.
This is fine - if the app is loaded and tries to display a message with
such a not-yet-generated thumbnail, the code in `serve_file` will
generate the thumbnails synchronously on the fly and the user will see
the image preview displayed normally. See:
1b47134d0d/zerver/views/upload.py (L333-L342)
Earlier, only public data export was possible via `POST /export/realm`
endpoint. This commit adds support to create full data export with
member consent via that endpoint.
Also, this adds a 'export_type' parameter to the dictionaries
in `realm_export` event type and `GET /export/realm` response.
Fixes part of #31201.
Earlier, we used to store the key data related to realm exports
in RealmAuditLog. This commit adds a separate table to store
those data.
It includes the code to migrate the concerned existing data in
RealmAuditLog to RealmExport.
Fixes part of #31201.
This commit updates code to store the realm export stats in
json format instead of plain text.
This will help in storing the stats as JsonField in RealmExport table.
For exporting full with consent:
* Earlier, a message advertising users to react with thumbs up
was sent and later used to determine the users who consented.
* Now, we no longer need to send such a message. This commit
updates the logic to use `allow_private_data_export` user-setting
to determine users who consented.
Fixes part of #31201.
This allows finer-grained access control and auditing. The links
generated also expire after one week, and the suggested configuration
is that the underlying data does as well.
Co-authored-by: Prakhar Pratyush <prakhar@zulip.com>
This commit introduced 'creator' and 'date_created'
fields in user groups, allowing users to view who
created the groups and when.
Both fields can be null for groups without creator data.
The export tool was only exporting the already-thumbnailed emoji file,
omitting the original one. Now we make sure to export the .original file
too, like we do for avatars, and make the import tool process it
directly, to thumbnail it directly and generate a still in the case of
animated emojis.
Otherwise, the imported realm wouldn't have the <emoji>.png.original
file that we generally expect to have accessible, and stills for
animated emojis were completely missing.
A new table is created to track which path_id attachments are images,
and for those their metadata, and which thumbnails have been created.
Using path_id as the effective primary key lets us ignore if the
attachment is archived or not, saving some foreign key messes.
A new worker is added to observe events when rows are added to this
table, and to generate and store thumbnails for those images in
differing sizes and formats.
Earlier, the export tool was logging a warning:
"??? NO DATA EXPORTED FOR TABLE zerver_onboardingusermessage!!!"
This bug was due to not configuring a Config object for
'OnboardingUserMessage' in 'get_realm_config()'.
This commit fixes the bug to export the table properly.
When using the sub-expression purely for filtering, and not for
accessing the value in the resultset, .alias() is potentially faster
since it does not pull the value in as well.
This commit renames the "Huddle" Django model class to
"DirectMessageGroup", while maintaining the same table --
"zerver_huddle".
Fixes part of #28640.
Hash the salt, user-id, and now avatar version into the filename.
This allows the URL contents to be immutable, and thus to be marked as
immutable and cacheable. Since avatars are served unauthenticated,
hashing with a server-side salt makes the current and past avatars not
enumerable.
This requires plumbing the current (or future) avatar version through
various parts of the upload process.
Since this already requires a full migration of current avatars, also
take the opportunity to fix the missing `.png` on S3 uploads (#12852).
We switch from SHA-1 to SHA-256, but truncate it such that avatar URL
data does not substantially increase in size.
Fixes: #12852.
This prep commit adds a new OnboardingUserMessage model
that will be used to mark the new onboarding messages
for new users as unread and the first message of each
onboarding topic as starred.
This table won't include the old onboarding messages.
This commit performs a sweep on the first batch of non API
files to rename "huddle" to "direct_message_group`.
It also renames variables and methods of type -
"huddle_message" to "group_direct_message".
This is a part of #28640
Earlier, we were creating RealmAuditLog with REALM_EXPORTED
event_type when export of public data took place via organization
settings panel.
We were not creating the audit log when the export was executed
via shell i.e './manage.py export'.
This commit creates the audit log in that case too. It will
help during import to distinguish readily between imports
from another Zulip server vs imports from another product.
Replaced HUDDLE attribute with DIRECT_MESSAGE_GROUP using VS Code search,
part of a general renaming of the object class.
Fixes part of #28640.
Co-authored-by: JohnLu2004 <JohnLu10212004@gmail.com>
This migration applies under the assumption that extra_data_json has
been populated for all existing and coming audit log entries.
- This removes the manual conversions back and forth for extra_data
throughout the codebase including the orjson.loads(), orjson.dumps(),
and str() calls.
- The custom handler used for converting Decimal is removed since
DjangoJSONEncoder handles that for extra_data.
- We remove None-checks for extra_data because it is now no longer
nullable.
- Meanwhile, we want the bouncer to support processing RealmAuditLog entries for
remote servers before and after the JSONField migration on extra_data.
- Since now extra_data should always be a dict for the newer remote
server, which is now migrated, the test cases are updated to create
RealmAuditLog objects by passing a dict for extra_data before
sending over the analytics data. Note that while JSONField allows for
non-dict values, a proper remote server always passes a dict for
extra_data.
- We still test out the legacy extra_data format because not all
remote servers have migrated to use JSONField extra_data.
This verifies that support for extra_data being a string or None has not
been dropped.
Co-authored-by: Siddharth Asthana <siddharthasthana31@gmail.com>
Signed-off-by: Zixuan James Li <p359101898@gmail.com>
This commit adds code to pass all the required arguments to
select_related call for Subscription objects such that only
the required related fields are fetched from the database.
Previously, we did not pass any arguments to select_related,
so all the directly and indirectly related fields were fetched
when many of them were actually not being used and made the
query unnecessarily complex.
If there are two huddles, with users A + B + C + D and A + B + C, and
user D is deleted, it is replaced with a mirrordummy user. If
mirrordummy subscriptions are not included in exports, then the two
huddles have duplicate member sets, and will not be able to be
imported successfully.
Include huddle subscriptions for mirrordummy users in exports.
Mateusz Mandera
Prakhar Pratyush
Anders Kaseorg
Vector73
Alex Vandiver
sujal shah
Lauryn Menard
roanster007
Prakhar Pratyush
Sahil Batra
John Lu
Zixuan James Li