In some instances, the `modifications` of `tags` hasn't been properly serialized as a Ruby array but rather as a string (I've seen `""`, `"[]"`, and `"[\"\"]"`).
This generates an error when we try to `filter_tags` and remove `hidden_tags` (which is an array) from `tags` which might be a string.
Internal ref - t/131126
I wasn't able to figure out the root cause of this so I reverted the behavior that was introduced ~6 years ago in f2c060bdf2
This ensures that the theme id is resolved as early as possible in the
request cycle. This is necessary for the custom homepage to skip
preloading the wrong data.
Previously filter route was not setting topic list, this meant that
keyboard navigation using "G" "J" was not functioning.
This amends it by ensuring the list is set after looking up the model.
* DEV: Upgrade Rails to 7.1
* FIX: Remove references to `Rails.logger.chained`
`Rails.logger.chained` was provided by Logster before Rails 7.1
introduced their broadcast logger. Now all the loggers are added to
`Rails.logger.broadcasts`.
Some code in our initializers was still using `chained` instead of
`broadcasts`.
* DEV: Make parameters optional to all FakeLogger methods
* FIX: Set `override_level` on Logster loggers (#27519)
A followup to f595d599dd
* FIX: Don’t duplicate Rack response
---------
Co-authored-by: Jarek Radosz <jradosz@gmail.com>
In this PR we introduced `enforce_second_factor_on_external_auth` setting https://github.com/discourse/discourse/pull/27506
When it is set to false and the user is authenticated via OAuth, then we should not enforce the 2fa configuration.
We recently fixed a problem where secure upload images weren't re-attached when sending the activity summary e-mail.
This fix contained a bug that would lead to n copies of the e-mail body being included, n being the number of duplicates. This is because #fix_parts_after_attachments! was called once per attachment, and adding more parts to the multipart e-mail.
This PR fixes that by:
Adding a failing test case for the above.
Moving the looping over multiple posts into #fix_parts_after_attachments! itself.
When a post is cooked the links are extracted and `TopicLink` instances
are created for each of them. These links are used in various places,
including the topic view, user summary page, etc.
In previous commit 48e5d1a, hotlinked images from Oneboxes have been
ignored from the texts, but hotlinked images turned into Lightboxes
were still extracted.
The test that checks that securely uploaded images are re-attached to the digest e-mail wasn't rendering the actual digest e-mail template. This change fixes that.
Many site settings can be distructive or have huge side-effects
for a site that the admin may not be aware of when changing it.
This commit introduces a `requires_confirmation` attribute that
can be added to any site setting. When it is true, a confirmation
dialog will open if that setting is changed in the admin UI,
optionally with a custom message that is defined in client.en.yml.
If the admin does not confirm, we reset the setting to its previous
clean value and do not save the new value.
Some tooling may rely on an unsafe-none cross origin opener policy to work. This change adds a hidden site setting that can be used to list referrers where we add this header instead of the default one configured in cross_origin_opener_policy_header.
For Topic Embeds, we would prefer <article> to be the main article in a topic, rather than a table cell <td> with potentially a lot of data. However, in an example URL like here, the table cell (the very large code snippet) is seen as the Topic Embed's article due to the determined content weight by the Readability library we use.
In the newly released 0.7.1 cantino/ruby-readability#94, the library has a new option to exclude the library's default <td> element into content weighting. This is more in line with the original library where they only weighted <p>. So this PR excludes the td, as seen in the tests, to allow the actual article to be seen as the article. This PR also adds the details tag into the allow-list.
Followup 6b872c4c53
Even though we were showing a validation error for a reject
reason that was too long, we were still sending an email and
doing other operations on the user which we are rejecting.
This commit fixes this by validating the reviewable model
before attempting to do anything else after the reason is set.
A new admin setting called `enforce_second_factor_on_external_auth`. It allows users to authenticate using external providers even when 2FA is forced with `enforce_second_factor` site setting.
* Revert "FIX: Set `override_level` on Logster loggers (#27519)"
This reverts commit c1b0488c54.
* Revert "DEV: Make parameters optional to all FakeLogger methods"
This reverts commit 3318dad7b4.
* Revert "FIX: Remove references to `Rails.logger.chained`"
This reverts commit f595d599dd.
* Revert "DEV: Upgrade Rails to 7.1"
This reverts commit 081b00391e.
`Rails.logger.chained` was provided by Logster before Rails 7.1
introduced their broadcast logger. Now all the loggers are added to
`Rails.logger.broadcasts`.
Some code in our initializers was still using `chained` instead of
`broadcasts`.
Currently when a cache entry is corrupt, we log the event without doing
anything else. It means the cache is still corrupt, and the proper value
isn’t computed again.
Normally, it’s very rare the cache becomes corrupt, but it can happen
when upgrading Rails for example and the cache format changes. This is
normally handled automatically by Rails but since we’re using a custom
cache class, we have to do it ourselves.
This patch takes the same approach the Rails team did, when a cache
entry is corrupt, we treat it as a miss, recomputing the proper value
and caching it in the new format.
Wasn't quite handling the cases where a closing bracket `]` was used in the value of one of the attributes.
```markdown
[chat quote=user channel="[broken]"]
```
Would not be correctly parsed because we would _greedily_ use the first `]` as the end of the tag even though it might be a valid character when inside proper quotes.
c39a4de139/app/assets/javascripts/discourse-markdown-it/src/features/bbcode-block.js (L62)
Re-wrote the `parseBBCodeTag` to properly handle the following cases
- A closing tag (aka `[/name]`) which are easy since they don't have any attributes
- An old `[quote=...]` format we used that doesn't uses quotes but still has various attributes of the form `key:value`
- All three valid BBCode opening tag formats we support
- `[name]` without any attributes
- `[name=foo]` with a default value
- `[name foo=bar]` with some attributes
Ended up having to fix/rewrite the few bbcode rules that were using the `parseBBCodeTag` function, namely `d-wrap` and `discourse-local-dates`.
While working on this, I think I also found a way to get rid the of shims we had in place so that plugins could use the `parseBBCodeTag` function.
Reference - https://meta.discourse.org/t/having-a-right-bracket-in-a-channel-name-breaks-all-quotes-from-that-channel/308439
* Load search results in displayed order so that when more categories are loaded on scroll, they appear at the end,
* Limit the number of subcategories that are shown per category and display 'show more' links,
This commit adds ability to fetch a subset of site settings from the `/admin/site_settings` endpoint so that it can be used in all places where the client app needs access to a subset of the site settings.
Additionally, this commit also introduces a new service class called `UpdateSiteSetting` that encapsulates all the logic that surrounds updating a site setting so that it can be used to update site setting(s) anywhere in the backend. This service comes in handy with, for example, the controller for the flags admin config area which may need to update some site settings related to flags.
Internal topic: t/130713.
This commits introduces the `sidekiq_report_long_running_jobs_minutes`
global setting which allows a site administrator to log a warning in the
Rails log when a Sidekiq job has been running for too long.
The warning is logged with the backtrace of the thread that is
processing the Sidekiq job to make it easier to figure out what a
sidekiq job is stuck on.
When we turn on settings automatically for customers,
we sometimes use `.set_and_log` which will make a staff
action log for the site setting change. This is fine, but
there is no context for customers.
This change allows setting a message with `.set_and_log`, which
will be stored in the `details` column of the staff action log
created, which will show up on `/admin/logs/staff_action_logs`
---------
Co-authored-by: Kelv <kelv@discourse.org>
In #26642 we introduced a change that re-attaches securely uploaded images in the digest e-mail. However, this change assumed that the type argument to the Email::Sender constructor would be a symbol, but when it is coming from the UserEmail job it is a string. This PR fixes that.
This introduces the syntax of
`category:a,b,c` which will search across multiple categories.
Previously there was no way to allow search across a wide selection of
categories.
After working on the Webhook events filter by Status, I noticed that the 'Delivered' and 'Failed' options do not take the status param when loading more than fifty Webhook events. It causes to load all Webhook events regardless of its status after the first load.
This PR is adding webhook events status for the filter to the param when loading more than fifty Webhook events.
This commit tries another work around for the `Socket::ResolutionError: getaddrinfo: Temporary failure in name resolution`
error we are seeing on CI.
The problem with the previous workaround is that `Capybara.using_session` will attempt to resolve `localhost`
before yielding the block which means our retry code is not hit.
This problem may be related to https://bugs.ruby-lang.org/issues/20172
which hints at us potentially not being able to spin up threads on CI so
I'm adding a debugging statement when stuff fails.
decorator-transforms (https://github.com/ef4/decorator-transforms) is a modern replacement for babel's plugin-proposal-decorators. It provides a decorator implementation using modern browser features, without needing to enable babel's full suite of class feature transformations. This improves the developer experience and performance.
In local testing with Google's 'tachometer' tool, this reduces Discourse's 'init-to-render' time by around 3-4% (230ms -> 222ms).
It reduces our initial gzip'd JS payloads by 3.2% (2.43MB -> 2.35MB), or 7.5% (14.5MB -> 13.4MB) uncompressed.
This was previously reverted in 97847f6. This version includes a babel transformation which works around the bug in Safari <= 15.
For Cloudflare compatibility issues, check https://meta.discourse.org/t/311390
Not all HTML elements are converted into Markdown. Some are kept as HTML.
Without this fix XML/HTML entities that are formatted as text instead of code are swallowed by Discourse.
This also fixes quotes in the `title` attribute of the `<abbr>` tag.
Previously `HtmlToMarkdown` always converted HTML tables into Markdown tables. That lead to some badly formatted Markdown tables, e.g. when the table contained `rowspan` or `colspan`. This solves the issue by using very basic HTML tables in those cases.
When running ` rspec spec/services/external_upload_manager_spec.rb`
in the development environment, tests were failing with the following
error:
```
NameError:
uninitialized constant FakeS3::Aws
```
This commit introduces a hidden `s3_inventory_bucket` site setting which
replaces the `enable_s3_inventory` and `s3_configure_inventory_policy`
site setting.
The reason `enable_s3_inventory` and `s3_configure_inventory_policy`
site settings are removed is because this feature has technically been
broken since it was introduced. When the `enable_s3_inventory` feature
is turned on, the app will because configure a daily inventory policy for the
`s3_upload_bucket` bucket and store the inventories under a prefix in
the bucket. The problem here is that once the inventories are created,
there is nothing cleaning up all these inventories so whoever that has
enabled this feature would have been paying the cost of storing a whole
bunch of inventory files which are never used. Given that we have not
received any complains about inventory files inflating S3 storage costs,
we think that it is very likely that this feature is no longer being
used and we are looking to drop support for this feature in the not too
distance future.
For now, we will still support a hidden `s3_inventory_bucket` site
setting which site administrators can configure via the
`DISCOURSE_S3_INVENTORY_BUCKET` env.
This is a follow up to 9ff0805a1d. We
noticed that `localhost` can fail to resolve in other spots of the app
and not just in selenium-webdriver.
From the failing tests we have seen, the `getaddrinfo: Temporary failure in name resolution` error is only
seen from within the `Capybara.using_session` block. This commit aims to
ensure that `localhost` can be resolve after the new session is started.
* FEATURE: Add Filter for Webhook Events by Status
* Fixing multiple issues
* Lint
* Fixing multiple issues
* Change the range of the status for webhook events
We want to get rid of the old topic bulk actions modal
and use the new dropdown (currently gated behind
experimental_topic_bulk_actions_enabled_groups). To do
this we need to use the new dropdown in all places in the
UI.
This commit changes the full page search UI to use the new
topic bulk actions dropdown if experimental_topic_bulk_actions_enabled_groups
is enabled, and makes some minor refactors to make this work.
Also add a spec for both the old and new functionality.
This commit fixes a problem where the user will not be able to reset
their password when they only have security keys and backup codes
configured.
This commit also makes the following changes/fixes:
1. Splits password reset system tests to
`spec/system/forgot_password_spec.rb` instead of missing the system
tests in `spec/system/login_spec.rb` which is mainly used to test
the login flow.
2. Fixes a UX issue where the `Use backup codes` or `Use authenticator
app` text is shown on the reset password form when the user does
not have either backup codes or an authenticator app configured.
The mistake was made when flags were moved to the database. The `notify_moderators` (something else) flag should be the last position on the list.
This commit contains 3 changes:
- update fixtures order;
- remove position and enable from fixtures (they can be overridden by admin and we don't want seed to restore them);
- migration to fix data if the order was not changed by admin.
This commit updates the `UserPasswordExpirer.expire_user_password`
method to update `UserPassword#password_expired_at` when an existing
`UserPassword` record exists with the same `password_salt`,
`password_hash` and `password_algorithm`. This is to prevent the unique
validation error on `UserPassword#user_id` and
`UserPassword#password_hash` from being raised when the method is called
twice for a user that has not changed its password.
This commit includes various UX improvements to the reset
password page:
* Introduce a `hide-application-header-buttons` helper to do the following:
* Hide Sign Up and Log In buttons, they are not necessary on this flow
* Hide the sidebar, it is a distraction on this flow
* Improve messaging when a 2FA confirmation is required first
* Improve display of server-side ActiveRecord model validation errors
in password form, e.g. instead of "is the same as your current password"
we do "The password is the same as your current password"
* Move password tip to next line below input and move caps lock hint
inline with Show/Hide password toggle
* Add system specs for 2FA flow on reset password page
* Fixes a computed property conflict issue on the password reset
page when toggling 2FA methods
Continued work on moderate flags UI.
In this PR admins are allowed to change the order of flags. The notify user flag is always on top but all other flags can be moved.
On Github Actions, system tests which uses `Capybara#using_session` are
failing intermittently with the error "Socket::ResolutionError: getaddrinfo: Temporary failure in name resolution"
when `Selenium::WebDriver::Platform.localhost` tries to resolve
`localhost`.
Too much time has been spent trying to figure out why so we are giving
up here and just retrying the resolution of `localhost` on Github
Actions.
This makes it more obvious what's happening, and makes it much less likely that users will send repeated reset emails (and thereby hit the rate limit)
Followup to e97ef7e9af
This commit adds the ability for site administrators to mark users'
passwords as expired. Note that this commit does not add any client side
interface to mark a user's password as expired.
The following changes are introduced in this commit:
1. Adds a `user_passwords` table and `UserPassword` model. While the
`user_passwords` table is currently used to only store expired
passwords, it will be used in the future to store a user's current
password as well.
2. Adds a `UserPasswordExpirer.expire_user_password` method which can
be used from the Rails console to mark a user's password as expired.
3. Updates `SessionsController#create` to check that the user's current
password has not been marked as expired after confirming the
password. If the password is determined to be expired based on the
existence of a `UserPassword` record with the `password_expired_at`
column set, we will not log the user in and will display a password
expired notice. A forgot password email is automatically send out to
the user as well.
Even when the admin sidebar sections are collapsed, they should expand while filtering. When the filter is removed, sections should go back to the previous state.
In addition, trim whitespace from the filter section.
This commit re-introduces the "Move to Inbox" and "Move to Archive"
bulk topic actions, which we had in the old modal but had not yet added
to the new "experimental" dropdown, which isn't really experimental at
this point.
Once this is merged we can remove the old modal and only
rely on the new dropdown.
Prior to this fix we were opening a modal before closing the `DMenu` modal, given `DModal` expects only one modal at a time it was closing the latest modal and instantly closing the one we just opened.
This commit introduces the following changes which allows a site
administrator to mark `Upload` records with the `s3_file_missing`
verification status which will result in the `Upload` record being ignored when
`Discourse.store.list_missing_uploads` is ran on a site where S3 uploads
are enabled and `SiteSetting.enable_s3_inventory` is set to `true`.
1. Introduce `s3_file_missing` to `Upload.verification_statuses`
2. Introduce `Upload.mark_invalid_s3_uploads_as_missing` which updates
`Upload#verification_status` of all `Upload` records from `invalid_etag` to `s3_file_missing`.
3. Introduce `rake uploads:mark_invalid_s3_uploads_as_missing` Rake task
which allows a site administrator to change `Upload` records with
`invalid_etag` verification status to the `s3_file_missing`
verificaton_status.
4. Update `S3Inventory` to ignore `Upload` records with the
`s3_file_missing` verification status.
When uploading a video, the composer will now show a thumbnail image in
the composer preview instead of just the video placeholder image.
If `enable_diffhtml_preview` is enabled the video will be rendered in
the composer preview and is playable.
Introduced back in 2022 in
e3d495850d,
our new more specific message-id format for inbound and
outbound emails has now been in use for a very long time,
we can remove the support for the old formats:
`topic/:topic_id/:post_id.:random@:host`
`topic/:topic_id@:host`
`topic/:topic_id.:random@:host`
We are seeing a weird resolution error on Github actions with the
following backtrace:
```
Failure/Error:
visit File.join(
GlobalSetting.relative_url_root || "",
"/session/#{user.encoded_username}/become.json?redirect=false",
)
Socket::ResolutionError:
getaddrinfo: Temporary failure in name resolution
```
Switch to use `127.0.0.1` instead of forcing a name resolution.
In 958437e7dd we ensured that the email summaries are properly sent based on 'digest_attempted_at' for people who barely/never visit the forum.
This fixed the "frequency" of the email summaries but introduced a bug where the digest would be sent even though there wasn't anything new since for some users.
The logic we use to compute the threshold date for the content to be included in the digest was
```ruby
@since = opts[:since] || user.last_seen_at || user.user_stat&.digest_attempted_at || 1.month.ago
```
It was working as expected for users who haven never been seen but for users who have connected at least once, we would use their "last_seen_at" date as the "threshold date" for the content to be sent in a summary 😬
This fix changes the logic to be the most recent date amongst the `last_seen_at`, `digest_attempted_at` and `1.month.ago` so it's correctly handling cases where
- user has never been seen nor emailed a summary
- user has been seen in a while but has recently been sent a summary
- user has been sent a summary recently but hasn't been seen in a while.
This commit moves the logic for crawler rate limits out of the application controller and into the request tracker middleware. The reason for this move is to apply rate limits to all crawler requests instead of just the requests that make it to the application controller. Some requests are served early from the middleware stack without reaching the Rails app for performance reasons (e.g. `AnonymousCache`) which results in crawlers getting 200 responses even though they've reached their limits and should be getting 429 responses.
Internal topic: t/128810.
This gives us daily fidelity of topic view stats
New table stores a row per topic viewed per day tracking
anonymous and logged on views
We also have a new endpoint `/t/ID/views-stats.json` to get the statistics for the topic.
When selected some text inside a post, we offer the ability to "fast edit" the selected text without opening the composer.
However, there are certain cases where this isn't working quite a expected, due to the fact that we have some text in the "cooked" version of the post that isn't literally in the "raw" version of the post.
This ensures that whenever someone selects the within
- a quote
- a onebox
- an encrypted message
- a "cooked" date
we directly show the composer instead of showing the fast edit modal and then leaving the user with an invisible error.
Internal ref. t/128400
This commit updates `S3Inventory#files` to ignore S3 inventory files
which have a `last_modified` timestamp which are not at least 2 days
older than `BackupMetadata.last_restore_date` timestamp.
This check was previously only in `Jobs::EnsureS3UploadsExistence` but
`S3Inventory` can also be used via Rake tasks so this protection needs
to be in `S3Inventory` and not in the scheduled job.
After flags were moved to the database, with each save they are changing available PostActionTypes. Therefore, flag specs should clear the state before and after each example not just before.
In addition, we need to clear `nil` counts for dynamically created flags from serializer.
* FEATURE: add agree and edit
adds agree and edit - an alias for agree and keep -- but with a client action to
edit the post in the composer before the flag is agreed with
---------
Co-authored-by: Juan David Martinez <juan@discourse.org>
We're planning to implement a feature that allows adding required fields for existing users. This PR does some preparatory refactoring to make that possible. There should be no changes to existing behaviour. Just a small update to the admin UI.
This commit updates `Post#each_upload_url` to reject URLs that do not
have a host which matches `Discourse.current_hostname` but follows the
`/uploads/short-url` uploads URL format. This situation most commonly
happen when users copy upload URL link between different Discourse
sites.
For plugins with only an "enabled" site setting, it doesn't
make sense to take them to the site settings page, since the
toggle switch in the list can be used to change enabled/disabled.
This will not be the case for plugins that have their own custom
config page (like Automation), but we will deal with this when
we actually overhaul this plugin to use the new show page.
Also adds another rspec fixture of a test plugin.
This PR introduces a basic AdminNotice model to store these notices. Admin notices are categorized by their source/type (currently only notices from problem check.) They also have a priority.
* DEV: allow reply_by_email, visit_link_to_respond strings to be modified by plugins
* DEV: separate visit_link_to_respond and reply_by_email modifiers out
This PR aims to add bulk actions to the user's bookmarks.
After this feature, all users should be able to select multiple bookmarks and perform the actions of "deleting" or "clear reminders"
Instead of creating two separate Topics when a user (1) requests to join a group and (2) gets accepted in, this makes the acceptance message into a Post under the origin group request Topic.
This fixes the `PrettyText.make_all_links_absolute` to better handle subfolder.
In subfolder, when given the cooked version of a post, links to mentions includes the `Discourse.base_path` prefix. Adding the `Discourse.base_url` was doubling the `Discourse.base_path`.
The issue was hidden behind the specs which was stubbing `Discourse.base_url` instead of relying on `Discourse.base_path`.
This fixes both the "algorithm" used in `PrettyText.make_all_links_absolute` to better handle this case and correct the specs to properly handle subfolder cases.
There are lots of changes in the specs due to a refactoring to use squiggly heredoc strings for easier reading and less escaping.
- FIX: properly scope category changes to what the current user can see
- UX: previous category is now highlighted in "red", new category is highlighted in "green"
- PERF: no need to serialize the categories
- FIX: properly track wiki
- FIX: properly track post_type (aka. Staff Color)
- FIX: properly track making a topic a PM
- FIX: never show the category changes when a topic is made a PM
- PERF: post_revision serializer is now more leaner (never includes title changes when post_number > 1, never includes user changes if there aren't any)
- UX: always sort the tags by name
Note this may have performance issues in some cases, will need to be monitored
Previous to this change we were bracketing on 50 id windows. They may end up
having zero posts we are searching for leading to posts.rss and .json returning
no results.
- avoids Post.last.id which is expensive
- order by id desc which is better cause we bracket on id
(experimental)
The initial implementation of glimmer topic-list and related components. Does not include new APIs and isn't compatible with existing customization. That's gonna come in future PRs.
Enabled by adding groups to `experimental_glimmer_topic_list_groups` setting.
AuthProvider#enabled_setting=, used primarily by plugins, has been deprecated since version 2.9, in favour of Authenticator#enabled?. This PR confirms we are seeing no more usage and removes the method.
In 07ecbb5a3b we ensure the mentions in a group's activity page worked properly but we missed adding proper support for infinite loading.
The client is using the `before` parameter instead of the `before_post_id` to do the pagination.
This adds support for `before` as well as some tests to ensure it doesn't regress.
I also added tests to the group's activity posts as well since those were missing.
Finally I deleted some unused code (`group.messages_for`) which is not used anymore.
Context - https://meta.discourse.org/t/-/308044/9
Whenever one creates, updates, or deletes a post, we should keep the `topic.word_count` counter in sync.
Context - https://meta.discourse.org/t/-/308062
- login with username/password
- login with username/password and 2FA
- login with username/password back up code
- login with magic link
- login with magic link and 2FA
- login with magic link and back up code
- login when 2FA is required
- reset password
---
- signup and activate account
- signup with invite code
- signup with invite link
- signup and approve account
- signup and auto approve account
- signup with blocked domain
---
- basic login with Facebook
- basic login with Google
- basic login with Github
- basic login with Twitter
- basic login with Discord
- basic login with Linkedin
When converting a PM to a public topic (and vice versa), if there was a validation error (like a topic already used, or a tag required or not allowed) the error message wasn't bubbled up nor shown to the user.
This fix ensures we properly stop the conversion whenever a validation error happens and bubble up the errors back to the user so they can be informed.
Internal ref - t/128795
When "unicode_usernames" is enabled, calling the "user_path" helper with a username containing some non ASCII character will break due to the route constraint we have on username.
This fixes the issue by always encoding the username before passing it to the "user_path" helper.
Internal ref - t/127547
This commits updates `FinalDestination#get` to not forward
`Authorization` header on redirects since most HTTP clients I tested like
curl and wget does not it.
This also fixes a recent problem in `DiscourseIpInfo.mmdb_download`
where we will fail to download the databases when both `GlobalSetting.maxmind_account_id` and
`GlobalSetting.maxmind_license_key` has been set. The failure is due to
the bug above where the redirected URL given by MaxMind does not accept
an `Authorization` header.
The users directory is updated on a daily cadence. However, when a site is new and doesn't have many users, it can be confusing that a user who has just joined doesn't show up in the users until a day after they join. To eliminate this confusion, this commit triggers a refresh for the users directory as soon as as a user joins, if the site is in bootstrap mode. The reason for the conditional trigger is that refreshing the users directory is an expensive operation and doing it often on a large site with many users could lead to performance problems.
Internal topic: t/126076.
