* FEATURE: Optionally send a 'noindex' header in non-canonical responses
This will be used in a SEO experiment.
Co-authored-by: David Taylor <david@taylorhq.com>
PERF: Update like count in visible posts without an extra GET per like
Currently when a user is reading a topic and some post in it receive a
like from another user, the Ember app will be notified via MessageBus
and issue a GET to `/posts/{id}` to get the new like count. This worked
fine for us until today, but it can easily create a self-inflicted DDoS
when a topic with a large number of visitors gets a large number of
likes, since we will issue `visitors * likes` GET requests requests.
This patch optimizes this flow, by sending the new like count down in
the MessageBus notification, removing any need for the extra request.
It shouldn't cause any drift on the count because we send down the full
count instead of the difference too.
Possible follow-ups could include handling like removal.
* FEATURE: Cache CORS preflight requests for 2h
Browsers will cache this for 5 seconds by default. If using MessageBus
in a different domain, Discourse will issue a new long polling, by
default, every 30s or so. This means we would be issuing a new preflight
request **every time**. This can be incredibly wasteful, so let's cache
the authorization in the client for 2h, which is the maximum Chromium
allows us as of today.
* fix tests
DEV: Allow passing cook_method to TopicEmbed.import to override default
This will be used in the rss-polling plugin when we want to have
oneboxes on feed content, like youtube for example.
Allow admins to configure exceptions to our Rails rate limiter.
Configuration happens in the environment variables, and work with both
IPs and CIDR blocks.
Example:
```
env:
DISCOURSE_MAX_REQS_PER_IP_EXCEPTIONS: >-
14.15.16.32/27
216.148.1.2
```
Flips content_security_policy_frame_ancestors default to enabled, and
removes HTTP_REFERER checks on embed requests, as the new referer
privacy options made the check fragile.
There was a UI bug when submitting multiple files in the same batch. We
would remove the disabled status of the submit button after the previous
file was sucesfully uploaded and the next one was still mid
optimization.
Reported at https://meta.discourse.org/t/-/194841/15?u=falco
* FIX: Detect decode failures earlier in image optimization pipeline
Follow up to 9b51b9b but also detects the bug earlier and backs off.
What iOS 15 is doing is returning all zeroes to `ctx.getImageData`,
so we don't have to wait until resize to detect the problem.
* Update app/assets/javascripts/discourse/app/lib/media-optimization-utils.js
Co-authored-by: Jarek Radosz <jradosz@gmail.com>
Co-authored-by: Jarek Radosz <jradosz@gmail.com>
On iOS 15 beta, if you select the camera app when uploading an image
and try to upload a freshly taken picture, from the second picture
onwards the resize WASM operation will return an array filled with
zeroes.
Since every 4th byte is alpha, and at this step we are only dealing with
non-transparent images this a O(1) way to detect that the bug was hit.
(On normal images, all 4th bytes are 255 at this point)
Also adds a "catch-all" when the original image became too small to try
to accomodate other bugs of the same type. By default we only trigger
this whole operation on images over 1MB, so if the end result is <20KB
something weird did happen. Throwing here will let the upload continue
using the original file, so nothing is lost and the user can continue.
There are some hard limits in browser Canvas implementations, that will
throw a runtime exception when crossed. Since those limits are platform
dependent, the best we can do is catch it and back off from trying to
optimize a problematic file.
For example, a 60MB PNG can be processed fine by Chrome but Firefox will
fail trying to extract the ImageData from the CanvasRenderingContext2D
with NS_ERROR_FAILURE.
Also cleans up the media-optimization-utils and add post-resize size logs
Re-lands the change initially proposed on #8359 but without a new nginx
location block, so it has less change surface.
Co-authored-by: Jeff Wong <awole20@gmail.com>
Co-authored-by: Jeff Wong <awole20@gmail.com>
* FEATURE: Small improvements to the topic list embed
- Ability to wrap the list in a custom class so you can styles different
lists using specific CSS
- Adds a topic link to the thumbnail when using the complete template
* FIX: Be more strict about allowed chars in class name
Previosly, if the topic embed request had a missing username parameter,
and SiteSetting.embed_by_username was empty we would fail to create the
new topic and not show any errors.
Now we will fallback using the priority:
1. Username parameter
2. SiteSetting.embed_by_username
3. SiteSetting.site_contact_username
4. system user
`rake emails:test` task was always sending `localhost` as the domain name rather than using `smtp[:domain]` (aka `DISCOURSE_SMTP_DOMAIN`. `discourse-setup` has recently been modified to always set `DISCOURSE_SMTP_DOMAIN`, so it's important that this test rake task actually use the value.
I tested this change on a standard production install, and it's working as expected. Hopefully I managed not to bungle the copy/paste of the single line here in the github edit window.
Co-authored-by: Jay Pfaffman <jay@literatecomputing.com>
* FIX: Subfolder replace should only affect URL prefix
Issue was reported in https://meta.discourse.org/t/-/179504
* DEV: Test subfolder handling in get-url when called twice on the same path
A user browser may rotate a user subscription endpoint/keys
anytime.
Currently, Discourse will receive a 4XX response while trying to
deliver a push notification and silently unsubscribe the device.
With this change, we will gracefully handle desativating the old
subscription and the replacement creation with the need for the user
to resubscribe manually every time it breaks.
https://meta.discourse.org/t/-/125179?u=falco
This moves the way we add the user avatar and site logo
to the discobot certificates from embeded base64 png to
just using the files urls in the href to the image tag.
This will make generation faster and the certificate
smaller overall, but it can't be used in a `img` tag
anymore, since SVGs in `img` tags don't load the external images
In order to work around that we will move the certificate
in posts to an iframe, which works fine without any user
visible changes. For this to be possible the plugin automatically
adds the site current domain to the list of allowed iframe origins.
This has a basic config to use the new Codespaces feature in GitHub.
If you have access to the feature all you need to do is:
1. Visit https://github.com/discourse/discourse
2. Click on Code > Open with Codespaces > New codespace
3. Wait it to prepare the environment
4. Click on File > Run > Run without Debug or press
<kbd>CTRL</kbd>+<kbd>F5</kbd>
5. When prompted click on the green pop-up on the lower left to open the
running Discourse app in a new tab
We updated version of moment and moment-timezone as our current versions are outdated making Discourse Dates broken on places where timezone had updates, like here in Brazil.
This also update highlightJS to the latest version and corrected a test that relied on a no longer supported locale in
moment.
This is a way to detect that Discourse isn't able to receive online updates from
the server, and will be used to trigger an UI warning to the user that the session
is working on offline mode.
Meta request https://meta.discourse.org/t/offline-indicator/123000?u=falco
This misses a test because Favcount doesn't exposes a get to the counter.
Also, since this code deals with all possible notifications configs we support:
- favicon notification
- favicon new content
- title notification
- title new content
the code is a bit complicated to follow. We may look into refactoring it when a
good opportunity arises, like if https://w3c.github.io/badging/ setClientBadge() method
gives us a cleaner way to notify users.
On the topic view route we query for reviewables of each post in the stream,
using a query that filters on two unindexed columns. This results in a Parallel Seq Scan
over all rows, which can take quite some time (~20ms was seen) on forums with lots of flags
After index is added PostgreSQL planner opts for a simple Index Scan and runs in sub 1ms.
Before:
```
QUERY PLAN
---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
Finalize GroupAggregate (cost=11401.08..11404.87 rows=20 width=28) (actual time=19.209..19.209 rows=1 loops=1)
Group Key: r.target_id
-> Gather Merge (cost=11401.08..11404.41 rows=26 width=28) (actual time=19.202..20.419 rows=1 loops=1)
Workers Planned: 2
Workers Launched: 2
-> Partial GroupAggregate (cost=10401.06..10401.38 rows=13 width=28) (actual time=16.958..16.958 rows=0 loops=3)
Group Key: r.target_id
-> Sort (cost=10401.06..10401.09 rows=13 width=16) (actual time=16.956..16.956 rows=0 loops=3)
Sort Key: r.target_id
Sort Method: quicksort Memory: 25kB
Worker 0: Sort Method: quicksort Memory: 25kB
Worker 1: Sort Method: quicksort Memory: 25kB
-> Nested Loop (cost=0.42..10400.82 rows=13 width=16) (actual time=15.894..16.938 rows=0 loops=3)
-> Parallel Seq Scan on reviewables r (cost=0.00..10302.47 rows=8 width=12) (actual time=15.882..16.927 rows=0 loops=3)
Filter: (((target_type)::text = 'Post'::text) AND (target_id = ANY ('{7565483,7565563,7565566,7565567,7565568,7565569,7565579,7565580,7565583,7565586,7565588,7565589,7565601,7565602,7565603,7565613,7565620,7565623,7565624,7565626}'::integer[])))
Rows Removed by Filter: 49183
-> Index Scan using index_reviewable_scores_on_reviewable_id on reviewable_scores s (cost=0.42..12.27 rows=2 width=8) (actual time=0.029..0.030 rows=1 loops=1)
Index Cond: (reviewable_id = r.id)
Planning Time: 0.318 ms
Execution Time: 20.470 ms
```
After:
```
QUERY PLAN
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
GroupAggregate (cost=0.84..342.54 rows=20 width=28) (actual time=0.038..0.038 rows=1 loops=1)
Group Key: r.target_id
-> Nested Loop (cost=0.84..341.95 rows=31 width=16) (actual time=0.020..0.033 rows=1 loops=1)
-> Index Scan using index_reviewables_on_target_id on reviewables r (cost=0.42..96.07 rows=20 width=12) (actual time=0.013..0.026 rows=1 loops=1)
Index Cond: (target_id = ANY ('{7565483,7565563,7565566,7565567,7565568,7565569,7565579,7565580,7565583,7565586,7565588,7565589,7565601,7565602,7565603,7565613,7565620,7565623,7565624,7565626}'::integer[]))
-> Index Scan using index_reviewable_scores_on_reviewable_id on reviewable_scores s (cost=0.42..12.27 rows=2 width=8) (actual time=0.005..0.005 rows=1 loops=1)
Index Cond: (reviewable_id = r.id)
Planning Time: 0.253 ms
Execution Time: 0.067 ms
```
Legacy Firefox Android has some quirks around vibration where it:
- asks for permission
- doesn't persist the permission
This makes the default like vibration popup a permission on Firefox
Android <= 68.
This isn't the case (yet?) on their new Firefox which is rolling out
worldwide right now.
I'd say we merge this now and revert in 3 months or so when
https://arewefenixyet.com/ shows a full rollout.
Behavior was changed in #9966, which made the URL be relative.
If the user landed in a topic, for example, the browser was given a
service worker URL under that specific topic URL, which was a 404.
Fixes broken PWA install and broken push notifications
Follow up to 3b0fa9b using the new icon URL introduced in e618efe
Will automatically use icons of the primary color of the active theme
for the user during install.
* FEATURE: Support for App Shortcuts Menu
This adds a list of shortcuts to a installed Discourse instance.
It can be accessed by right clicks or long press on the app icon.
See https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/master/Shortcuts/explainer.md
List of possible follow ups include:
- Making it admin customizable
- Making it user customizable
- Using SVG icons from the site icon sprite
- Picking an accent color for icons
* FIX: Add type to shortcut menu icons
