This commit drops the `before_action :preload_json` callback in `ApplicationController` as it adds unnecessary complexity to `ApplicationController` as well as other controllers which has to skip this callback. The source of the complexity comes mainly from the following two conditionals in the `preload_json` method:
```
# We don't preload JSON on xhr or JSON request
return if request.xhr? || request.format.json?
# if we are posting in makes no sense to preload
return if request.method != "GET"
```
Basically, the conditionals solely exists for optimization purposes to ensure that we don't run the preloading code when the request is not a GET request and the response is not expected to be HTML. The key problem here is that the conditionals are trying to expect what the content type of the response will be and this has proven to be hard to get right. Instead, we can simplify this problem by running the preloading code in a more deterministic way which is to preload only when the `application` layout is being rendered and this is main change that this commit introduces.
This change adds a sidebar link for each plugin that fulfils the following criteria:
- Does not have an explicit admin route defined in the plugin.
- Has at least one site setting (not including enabled/disabled.)
That sidebar link leads to the automatically generated plugin show settings page.
Currently in services, we don’t make a distinction between input
parameters, options and dependencies.
This can lead to user input modifying the service behavior, whereas it
was not the developer intention.
This patch addresses the issue by changing how data is provided to
services:
- `params` is now used to hold all data coming from outside (typically
user input from a controller) and a contract will take its values from
`params`.
- `options` is a new key to provide options to a service. This typically
allows changing a service behavior at runtime. It is, of course,
totally optional.
- `dependencies` is actually anything else provided to the service (like
`guardian`) and available directly from the context object.
The `service_params` helper in controllers has been updated to reflect
those changes, so most of the existing services didn’t need specific
changes.
The options block has the same DSL as contracts, as it’s also based on
`ActiveModel`. There aren’t any validations, though. Here’s an example:
```ruby
options do
attribute :allow_changing_hidden, :boolean, default: false
end
```
And here’s an example of how to call a service with the new keys:
```ruby
MyService.call(params: { key1: value1, … }, options: { my_option: true }, guardian:, …)
```
When a user is missing required fields, they are required to fill those up before continuing to interact with the forum. This applies to admins as well.
We keep a whitelist of paths that can still be visited in this mode: FAQ, About, 2FA setup, and any admin route for admins.
We concluded that admins should still be able to enable safe mode even with missing required fields. Since plugins etc. can potentially mess with the ability to fill those up.
Constants should always be only assigned once. The logical OR assignment
of a constant is a relic of the past before we used zeitwerk for
autoloading and had bugs where a file could be loaded twice resulting in
constant redefinition warnings.
If a plugin's JS fails to load for some reason, most commonly
ad blockers, the entire admin interface would break. This is because
we are adding links to the admin routes for plugins that define
them in the sidebar.
We have a fix for this already in the plugin list which shows a warning
to the admin. This fix just prevents the broken link from rendering
in the sidebar if the route is not valid.
Previously in these 2 PRs, we introduced a new site setting `SiteSetting.enforce_second_factor_on_external_auth`.
https://github.com/discourse/discourse/pull/27547https://github.com/discourse/discourse/pull/27674
When disabled, it should enforce 2FA for local login with username and password and skip the requirement when authenticating with oauth2.
We stored information about the login method in a secure session but it is not reliable. Therefore, information about the login method is moved to the database.
Followup 3ff7ce78e782c7d28c8b5a1a3f40a1de897d89a1
Basing this setting on referrer was too brittle --
the referrer header can easily be ommitted or changed.
Instead, for the small amount of use cases that this
site setting serves, we can use a group-based setting
instead, changing it to `cross_origin_opener_unsafe_none_groups`
instead.
If the `enforce_second_factor_on_external_auth` setting
is disabled and a user logs in with an OAuth method,
they don't automatically get redirected to /preferences/second-factor
on login. However, they can get there manually, and once there
they cannot leave.
This commit fixes the issue and allows them to leave
and also does some refactors to indicate to the client
what login method is used as a followup to
0e1102b3326ace878c357301e108154051d37c31
We want to allow admins to make new required fields apply to existing users. In order for this to work we need to have a way to make those users fill up the fields on their next page load. This is very similar to how adding a 2FA requirement post-fact works. Users will be redirected to a page where they can fill up the remaining required fields, and until they do that they won't be able to do anything else.
Followup to 0e1102b3326ace878c357301e108154051d37c31
Minor followup, makes the condition check against the
boolean val, see the difference here:
```ruby
!SiteSetting.enforce_second_factor_on_external_auth && "true"
=> "true"
```
vs:
```ruby
!SiteSetting.enforce_second_factor_on_external_auth && "true" == "true"
=> true
```
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.
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.
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.
This commit removes the `/admin-revamp` routes which were introduced as a part of an experiment to revamp the admin pages. We still want to improve the admin/staff experience, but we're going to do them within the existing `/admin` routes instead of introducing a completely new route.
Our initial efforts to improve the Discourse admin experience is this commit which introduces the foundation for a new subroute `/admin/config` which will house various new pages for configuring Discourse. The first new page (or "config area") will be `/admin/config/about` that will house all the settings and controls for configuring the `/about` page of Discourse.
Internal topic: t/128544
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.
- Run the CSP-nonce-related middlewares on the generated response
- Fix the readonly mode checking to avoid empty strings being passed (the `check_readonly_mode` before_action will not execute in the case of these re-dispatched exceptions)
- Move the BlockRequestsMiddleware cookie-setting to the middleware, so that it is included even for unusual HTML responses like these exceptions
Using around_action means `add_early_hint_header` is in the stack for every request, and gets included in the backtrace of any errors.
We can manage with an after_action instead, which avoids adding to the stack depth (and avoids people blaming me for unrelated application errors 😉)
This commit removes the 'experimental_preconnect_link_header' site setting, and the 'preload_link_header' site setting, and introduces two new global settings: early_hint_header_mode and early_hint_header_name.
We don't actually send 103 Early Hint responses from Discourse. However, upstream proxies can be configured to cache a response header from the app and use that to send an Early Hint response to future clients.
- `early_hint_header_mode` specifies the mode for the early hint header. Can be nil (disabled), "preconnect" (lists just CDN domains) or "preload" (lists all assets).
- `early_hint_header_name` specifies which header name to use for the early hint. Defaults to "Link", but can be changed to support different proxy mechanisms.
Previously, when crawlers triggered a Discourse::InvalidAccess exception, they would be served the full Ember SPA. The SPA is not optimized for crawling, and so this is likely to cause problems for sites. This issue is particularly problematic when user profiles are hidden from the public via the `hide_user_profiles_from_public` setting, because the crawler would end up being 'soft-redirected' to the homepage in the SPA.
Why this change?
In https://web.dev/articles/preconnect-and-dns-prefetch, it describes
how hinting to the browser to preconnect to domains which we will
eventually use the connection for can help improve the time it takes to
load a page.
We are putting this behind an experimental flag so that we can test and
profile this in a production environment.
What does this change introduce?
Introduce a hidden experimental `experimental_preconnect_link_header`
site setting which when enabled will add the `preconnect` and
`dns-prefetch` resource hints to the response headers for full page load
requests.
With the new admin sidebar restructure, we have a link to "Installed plugins". We would like to ensure that when the admin is searching for a plugin name like "akismet" or "automation" this link will be visible. Also when entering the plugins page, related plugins should be highlighted.
When we show the links to installed plugins in the admin
sidebar (for plugins that have custom admin routes) we were
previously only doing this if you opened /admin, not if you
navigated there from the main forum. We should just always
preload this data if the user is admin.
This commit also changes `admin_sidebar_enabled_groups` to
not be sent to the client as part of ongoing efforts to
not check groups on the client, since not all a user's groups
may be serialized.
In a handful of situations, we need to verify a user's 2fa credentials before `current_user` is assigned. For example: login, email_login and change-email confirmation. This commit adds an explicit `target_user:` parameter to the centralized 2fa system so that it can be used for those situations.
For safety and clarity, this new parameter only works for anon. If some user is logged in, and target_user is set to a different user, an exception will be raised.
This changes the Plugins link in the admin sidebar to
be a section instead, which then shows all enabled plugin
admin routes (which are custom routes some plugins e.g.
chat define).
This is done via adding some special preloaded data for
all controllers based on AdminController, and also specifically
on Admin::PluginsController, to have the routes loaded without
additional requests on page load.
We just use a cog for all the route icons for now...we don't
have anything better.
Why this change?
This is part of our efforts to harden the security of the Discourse
application. Setting the `CROSS_ORIGIN_OPENER_POLICY` header to `same-origin-allow-popups`
by default makes the application safer. We have opted to make this a
hidden site setting because most admins will never have to care about
this setting so we're are opting not to show it. If they do have to
change it, they can still do so by setting the
`DISCOURSE_CROSS_ORIGIN_OPENER_POLICY` env.
Some sites have a large number of categories and fetching the category
IDs or category topic IDs just to build another query can take a long
time or resources (i.e. memory).
Why this change?
As part of our ongoing efforts to security harden the Discourse
application, we are adding the `cross_origin_opener_policy_header` site setting
which allows the `Cross-Origin-Opener-Policy` response header to be set on requests
that preloads the Discourse application. In more technical terms, only
GET requests that are not json or xhr will have the response header set.
The `cross_origin_opener_policy_header` site setting is hidden for now
for testing purposes and will either be released as a public site
setting or be remove if we decide to be opinionated and ship a default
for the `Cross-Origin-Opener-Policy` response header.
What is the problem here?
In multiple controllers, we are accepting a `limit` params but do not
impose any upper bound on the values being accepted. Without an upper
bound, we may be allowing arbituary users from generating DB queries
which may end up exhausing the resources on the server.
What is the fix here?
A new `fetch_limit_from_params` helper method is introduced in
`ApplicationController` that can be used by controller actions to safely
get the limit from the params as a default limit and maximum limit has
to be set. When an invalid limit params is encountered, the server will
respond with the 400 response code.
Some plugins call require_plugin with a wrong argument instead of the
plugin name. In a production environment that used to be a warning, but
there is no reason to keep it like that in a testing environment
because the issue will continue to be ignored.
]When changing fonts in the `/wizard/steps/styling` step of
the wizard, users would not see the font loaded straight away,
having to switch to another one then back to the original to
see the result. This is because we are using canvas to render
the style preview and this fails with a Chrome-based intervention
when font loading is taking too long:
> [Intervention] Slow network is detected. See
https://www.chromestatus.com/feature/5636954674692096 for more details.
Fallback font will be used while loading:
https://sea2.discourse-cdn.com/business7/fonts/Roboto-Bold.ttf?v=0.0.9
We can get around this by manually loading the fonts selected using
the FontFace JS API when the user selects them and before rerendering
the canvas. This just requires preloading more information about the
fonts if the user is admin so the wizard can query this data.
This reapplies commit 3073e5cfb0721b3b8009963c5fc7f61d414db317, with
a fix that makes sure that plugins can be looked up both by the name
present in metadata and directory name.
This corrects two issues:
1. We were double serializing topic tracking state (as_json calls were not cached)
2. We were inefficiently serializing items by instantiating extra objects
What does this change do?
This commit the client to override the navigation menu setting
configured by the site temporarily based on the value of the
`navigation_menu` query param. The new query param replaces the old
`enable_sidebar` query param.
Why do we need this change?
The motivation here is to allow theme maintainers to quickly preview
what the site will look like with the various navigation menu site
setting.
