This changeset introduces a filter-based Robots API, providing central control over the `robots` meta tag.
* Introduces `wp_robots()` function which should be called anywhere a `robots` meta tag should be included.
* Introduces `wp_robots` filter which allows adding or modifying directives for the `robots` meta tag. The `wp_robots()` function is entirely filter-based, i.e. if no filter is added to `wp_robots`, no directives will be present, and therefore the entire `robots` meta tag will be omitted.
* Introduces the following `wp_robots` filter functions which replace similar existing functions that were manually rendering a `robots` meta tag:
* `wp_robots_noindex()` replaces `noindex()`, which has been deprecated.
* `wp_robots_no_robots()` replaces `wp_no_robots()`, which has been deprecated.
* `wp_robots_sensitive_page()` replaces `wp_sensitive_page_meta()`, which has been deprecated. Its rendering of the `referrer` meta tag has been moved to another new function `wp_strict_cross_origin_referrer()`.
Migration to the new functions is straightforward. For example, a call to `add_action( 'wp_head', 'wp_no_robots' )` should be replaced with `add_filter( 'wp_robots', 'wp_robots_no_robots' )`.
Plugins and themes that render their own `robots` meta tags are encouraged to switch to rely on the `wp_robots` filter in order to use the central management layer now provided by WordPress core.
Props adamsilverstein, flixos90, timothyblynjacobs, westonruter.
See #51511.
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This brings the accessibility improvements previously made for other areas of the admin in WordPress 5.3 to the installation screens too.
Follow-up to [46241-46244], [46247], [46248], [46293], [46425].
Props Maigret, audrasjb.
Fixes#51854.
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r49212 greatly improved the performance of `get_dirsize()`, but also changed the structure of the data stored in the `dirsize_cache` transient. It stored relative paths instead of absolute ones, and also removed the unnecessary `size` array.
That difference in data structures led to a fatal error in the following environment:
* PHP 8
* Multisite
* A custom `WP_CONTENT_DIR` which is not a child of WP's `ABSPATH` folder (e.g., [https://roots.io/bedrock/ Bedrock])
* The `upload_space_check_disabled` option set to `0`
After upgrading to WP 5.6, the `dirsize_cache` transient still had data in the old format. When `wp-admin.php/index.php` was visited, `get_space_used()` received an `array` instead of an `int`, and tried to divide it by another `int`. PHP 7 would silently cast the arguments to match data types, but [https://wiki.php.net/rfc/arithmetic_operator_type_checks PHP 8 throws a fatal error]:
`Uncaught TypeError: Unsupported operand types: array / int`
`recurse_dirsize()` was using `ABSPATH` to convert the absolute paths to relative ones, but some upload locations are not located under `ABSPATH`. In those cases, `$directory` and `$cache_path` were identical, and that triggered the early return of the old `array`, instead of the expected `int`.
In order to avoid that, this commit restores the absolute paths, but without the `size` array. It also adds a type check when returning cached values. Using absolute paths without `size` has the result of overwriting the old data, so that it matches the new format. The type check and upgrade routine are additional safety measures.
Props peterwilsoncc, janthiel, helen, hellofromtonya, francina, pbiron.
Fixes#51913. See #19879.
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* Clarifies that if you are on maintenance/security auto-updates that you are only on those and therefore there are more options available.
* Adds a message if a version control system has been detected, as automatic updates are disabled in that case.
* Ensures only one heading between `update available`, `you are on a dev version`, and `you are on latest` appears at any given time, falling back to `you are on latest` if something strange happens with the returned update data.
* Removes some older strings related to auto-updates, which greatly simplifies the above.
* Strips the `core-major-auto-updates-saved` query arg from the URL, as it is related to a dismissible notice.
Props audrasjb, pbiron, helen.
Fixes#51742.
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If reinstalling WordPress, there is a condition where tables would exist in the database. Ensures that when that is the case, the install process can carry along without issue.
Fixes#51676.
Props xknown, garubi, mukesh27, desrosj, johnbillion, metalandcoffee, davidbaumwald, whyisjake.
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When `noopener noreferrer` was originally added in #37941 and related tickets, the `noreferrer` bit was specifically included due to Firefox not supporting `noopener` at the time.
Since `noopener` has been supported by all major browsers for a while, it should now be safe to remove the `noreferrer` attribute from core.
Props Mista-Flo, audrasjb, joostdevalk, jonoaldersonwp, peterwilsoncc, elgameel.
Fixes#49558.
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Instead of one cache entry for all upload folders for a site on multisite, this now caches for each folder and invalidates that cache based on context. In multisite, this should speed up `get_dirsize` calls since older directories that are much less likely to change will no longer have the size recalculated.
Props janthiel, A5hleyRich, batmoo.
Fixes#19879.
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Using the canonical function name for PHP functions is strongly recommended, as aliases may be deprecated or removed without (much) warning.
This replaces all uses of the following:
* `join()` with `implode()`
* `sizeof()` with `count()`
* `is_writeable()` with `is_writable()`
* `doubleval()` with a `(float)` cast
In part, this is a follow-up to #47746.
Props jrf.
See #50767.
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This allows for edits to be made to a restored post before it goes live again. This also prevents scheduled posts being published unexpectedly if they are untrashed after their originally scheduled date.
The old behaviour of restoring untrashed posts to their original status can be reinstated using the `wp_untrash_post_set_previous_status()` helper function.
Also fixes an issue where the incorrect post ID gets passed to hooks if no post ID is passed to the function.
Props harrym, bananastalktome, jaredcobb, chriscct7, melchoyce, johnbillion, pankajmohale
Fixes#23022
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As it already was not possible to pass the required parameters without also passing the optional one anyway, removing the default value for the (not so) optional parameters should not affect backward compatibility.
This change affects three functions in core:
* `get_comment_delimited_block_content()`
* `do_enclose()`
* `_wp_delete_tax_menu_item()`
Props jrf, ayeshrajans, desrosj.
Fixes#50343.
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Several new checks:
* `max_file_uploads`
* `file_uploads`
* `post_max_size`
* `upload_max_filesize`
* `upload_max`
* `max_file_uploads`
In addition, new function `parse_ini_size()` that converts shorthand byte strings to bytes. Useful for size comparisons.
Fixes#50038.
Props dd32, donmhico, JavierCasares, SergeyBiryukov, ayeshrajans, Clorith, ipstenu, sabernhardt, whyisjake.
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For a number of years, WordPress has been using a `#00a0d2` blue shade for the links `:hover` state. This blue shade doesn't have a sufficient color contrast with the various (too many) background colors used in the admin interface.
The new `#006799` blue shade is part of the official WordPress color palette and does have a sufficient color contrast with most of the admin backgrounds.
Props ryokuhi, audrasjb, joedolson, mapk.
See #47682.
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Felix Arntz
Sergey Biryukov
John Blackbourn
iandunn
Helen Hou-Sandí
whyisjake
desrosj
TimothyBlynJacobs
Andrea Fercia