Commit Graph

6644 Commits

Author SHA1 Message Date
Dion Hulse
b09cebf575 Rewrite Rules: Correct the logic in extract_from_markers() after [41928].
Props stodorovic, SergeyBiryukov.
Merges [42199] to the 4.9 branch.
Fixes #42579. See #39920.

Built from https://develop.svn.wordpress.org/branches/4.9@42213


git-svn-id: http://core.svn.wordpress.org/branches/4.9@42042 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-11-21 03:47:38 +00:00
Dion Hulse
66a3d52431 Multisite: Fix broken update blog_versions query after [41661].
Props Mista-Flo, lenasterg, flixos90.
Merges [42210] to the 4.9 branch.
Fixes #42641.

Built from https://develop.svn.wordpress.org/branches/4.9@42212


git-svn-id: http://core.svn.wordpress.org/branches/4.9@42041 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-11-21 03:43:40 +00:00
Weston Ruter
15b14c30c1 Customize: Prevent PHP notice on theme-switch dashboard welcome link (and link to themes admin screen) when user cannot customize.
Props skostadinov, ocean90.
Amends [41699].
See #42050.
Fixes #42525 for 4.9.

Built from https://develop.svn.wordpress.org/branches/4.9@42170


git-svn-id: http://core.svn.wordpress.org/branches/4.9@42000 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-11-13 22:45:47 +00:00
Weston Ruter
a647fbead2 Settings: Replace count() call with empty() in get_settings_errors() to prevent PHP 7.2 warnings when $wp_settings_errors is null.
Props pross, dd32, westonruter.
See #40109.
Fixes #42498 for 4.9.

Built from https://develop.svn.wordpress.org/branches/4.9@42147


git-svn-id: http://core.svn.wordpress.org/branches/4.9@41978 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-11-10 22:32:47 +00:00
Weston Ruter
e6a91f7ccf Settings: Fix date/time format previewing.
Props afercia.
Amends [41857].
Fixes #41603 for 4.9.

Built from https://develop.svn.wordpress.org/branches/4.9@42135


git-svn-id: http://core.svn.wordpress.org/branches/4.9@41966 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-11-09 03:57:36 +00:00
Konstantin Obenland
65c1468ff5 File Editors: Account for network admin use
Fixes a bug where files couldn't be accessed in multisite installs.

Props flixos90, westonruter.
Fixes #42420.


Built from https://develop.svn.wordpress.org/trunk@42115


git-svn-id: http://core.svn.wordpress.org/trunk@41944 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-11-03 18:51:49 +00:00
Weston Ruter
83c29a4d08 Theme Editor: Ensure files listed recursively can be both viewed and edited.
Prevent edits to 2-level deep theme files from returning a `disallowed_theme_file` error when attempting to save an edit. Aligns logic for gathering `$allowed_files` in `theme-editor.php` for listing files with the validation logic in `wp_edit_theme_plugin_file()`.

Amends [41806].
See #6531.
Fixes #42425.

Built from https://develop.svn.wordpress.org/trunk@42112


git-svn-id: http://core.svn.wordpress.org/trunk@41941 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-11-02 23:05:48 +00:00
iandunn
2762709d2a Dashboard: Strip ports from IPs to avoid PHP warnings.
Fixes #41083.
Props pento, iandunn, EatonZ, birgire, dd32.

Built from https://develop.svn.wordpress.org/trunk@42016


git-svn-id: http://core.svn.wordpress.org/trunk@41850 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-25 00:07:46 +00:00
Weston Ruter
12c626c82e Update $_old_files to add the deleted MediaElement.js files when it was upgraded from 2.22.0 to 4.2.3.
Amends [41198].
See #39686.
Fixes #42097.

Built from https://develop.svn.wordpress.org/trunk@42015


git-svn-id: http://core.svn.wordpress.org/trunk@41849 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-25 00:02:50 +00:00
John Blackbourn
2f3e91028a Filesystem API: Add more specificity to the rules for valid files in validate_file().
This now treats files containing `./` as valid, and also treats files containing a trailing `../` as valid due to widespread use of this pattern in theme and plugin zip files.

Adds tests.

Props Ipstenu, borgesbruno, DavidAnderson, philipjohn, birgire
Fixes #42016, #36170

Built from https://develop.svn.wordpress.org/trunk@42011


git-svn-id: http://core.svn.wordpress.org/trunk@41845 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-24 23:15:49 +00:00
John Blackbourn
16cfe96580 Filesystem API: Don't immediately return an error for invalid file names contained within a Zip while it's being extracted.
This allows the extraction of the rest of the valid files within the archive to continue.

See #42016

Built from https://develop.svn.wordpress.org/trunk@42010


git-svn-id: http://core.svn.wordpress.org/trunk@41844 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-24 23:11:50 +00:00
Weston Ruter
48e726bbef Embeds: Improve consistency of update and refresh logic for oEmbed caching between oembed_cache and post meta.
* Allow updating oEmbed cache during `parse-embed` requests for non-post editors (such as widgets).
* Update any existing `oembed_cache` post when `usecache` and TTL has passed.
* Do not overwrite a previously valid cache with `{{unknown}}`.

Props dlh.
See #34115.
Fixes #42310.

Built from https://develop.svn.wordpress.org/trunk@42009


git-svn-id: http://core.svn.wordpress.org/trunk@41843 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-24 23:10:48 +00:00
John Blackbourn
4812370aab Docs: Improve the docs for validate_file() and validate_file_to_edit().
See #42016, #36170, #41017

Built from https://develop.svn.wordpress.org/trunk@42007


git-svn-id: http://core.svn.wordpress.org/trunk@41841 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-24 22:50:49 +00:00
Sergey Biryukov
29d5ee851c I18N: Use a consistent pattern for translator comments for placeholders in some more Customizer strings.
See #41974.
Built from https://develop.svn.wordpress.org/trunk@42006


git-svn-id: http://core.svn.wordpress.org/trunk@41840 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-24 22:47:46 +00:00
Sergey Biryukov
f156f90ff5 I18N: Add a context for remaining "Schedule" strings.
Props Mirucon.
Fixes #42165.
Built from https://develop.svn.wordpress.org/trunk@42005


git-svn-id: http://core.svn.wordpress.org/trunk@41839 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-24 22:35:47 +00:00
Sergey Biryukov
654386a5b7 Taxonomy: After [40984], add the most_used label for non-hierarchical taxonomies too, and use it on the Menus screen.
Props johnbillion.
Fixes #41150.
Built from https://develop.svn.wordpress.org/trunk@41987


git-svn-id: http://core.svn.wordpress.org/trunk@41821 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-24 11:23:24 +00:00
Weston Ruter
9093718b15 Editor: Specify maxwidth in parse-embed requests based on width of editor iframe so that TinyMCE view embeds fit, particularly in Text widgets.
See #40854, #34115.

Built from https://develop.svn.wordpress.org/trunk@41985


git-svn-id: http://core.svn.wordpress.org/trunk@41819 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-24 04:07:50 +00:00
Peter Wilson
339d838475 Comments: Check if wp_new_comment() returns an error.
Adds checks throughout to allow for `wp_new_comment()` returning a `WP_Error` instance.

Updates the docs for the `pre_comment_approved` filter to include that it can be passed an error.

Props enrico.sorcinelli, ryotsun.
Fixes #39730.


Built from https://develop.svn.wordpress.org/trunk@41980


git-svn-id: http://core.svn.wordpress.org/trunk@41814 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-23 22:12:51 +00:00
Aaron Jorbin
b8fc8cb59c Dashboard: Remove "Try Gutenberg" callout.
Reverting this for 4.9. It will be added back in a future version of WordPress. This doesn't mean that you shouldn't be trying Gutenberg, just that it isn't ready for a call out to a larger audience. But if you are the type to read commit messages, https://github.com/WordPress/gutenberg could use your pull requests and comments on issues.

Reverts [41931] [41900] [41896] [41895]
See #41316


Built from https://develop.svn.wordpress.org/trunk@41978


git-svn-id: http://core.svn.wordpress.org/trunk@41812 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-23 20:48:47 +00:00
Gary Pendergast
0847fab645 Media: Don't backdate media uploaded to pages.
When media is uploaded to a post, the upload directory is set according to the date of the post, so that the media URLs in the post match when the post was published.

A page is a slightly different beast, pages often live for years, and are regularly updated to stay relevant. This change causes media uploaded to pages to use the upload date to determine the upload directory.

Fixes #10752.


Built from https://develop.svn.wordpress.org/trunk@41964


git-svn-id: http://core.svn.wordpress.org/trunk@41798 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-21 13:27:48 +00:00
Dion Hulse
26f9c6b909 Transients: Clear expired transients from the database in a daily cron task.
Fixes #41699

Built from https://develop.svn.wordpress.org/trunk@41963


git-svn-id: http://core.svn.wordpress.org/trunk@41797 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-21 13:22:49 +00:00
Sergey Biryukov
1accb992f8 Menus: Pass $recent_args parameter to nav_menu_items_{$post_type_name}_recent filter.
Props welcher, eclev91.
Fixes #39849.
Built from https://develop.svn.wordpress.org/trunk@41941


git-svn-id: http://core.svn.wordpress.org/trunk@41775 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-19 13:05:55 +00:00
Sergey Biryukov
15c8976cc4 Dashboard: Add missing URL to "Help with testing" link in Gutenberg callout.
See #41316.
Built from https://develop.svn.wordpress.org/trunk@41931


git-svn-id: http://core.svn.wordpress.org/trunk@41765 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-18 22:41:46 +00:00
Sergey Biryukov
0f06f90341 Rewrite Rules: Remove redundant if condition in extract_from_markers().
Props Dency, yahil, appchecker.
Fixes #39920.
Built from https://develop.svn.wordpress.org/trunk@41928


git-svn-id: http://core.svn.wordpress.org/trunk@41762 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-18 21:28:46 +00:00
Sergey Biryukov
d2499c4212 Network Admin: After [41923], move the second <p> tag to a new line for better readability.
See #41652.
Built from https://develop.svn.wordpress.org/trunk@41924


git-svn-id: http://core.svn.wordpress.org/trunk@41758 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-18 20:51:48 +00:00
Sergey Biryukov
a749494900 I18N: Remove hardcoded constant from a translatable string in network_step1().
Props ramiy.
Fixes #41652.
Built from https://develop.svn.wordpress.org/trunk@41923


git-svn-id: http://core.svn.wordpress.org/trunk@41757 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-18 20:02:50 +00:00
Sergey Biryukov
106beec6a7 I18N: Combine two "Warning" strings in network_step1() and network_step2().
Props ramiy.
Fixes #38570.
Built from https://develop.svn.wordpress.org/trunk@41921


git-svn-id: http://core.svn.wordpress.org/trunk@41755 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-18 19:50:47 +00:00
Sergey Biryukov
a28bd1d36c Plugins: Revert unintended change from [41915].
See #37430.
Built from https://develop.svn.wordpress.org/trunk@41916


git-svn-id: http://core.svn.wordpress.org/trunk@41750 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-18 18:01:49 +00:00
Sergey Biryukov
936bf3661f Plugins: After [41608], make the markup in WP_Plugin_Install_List_Table::no_items() a bit more readable.
See #37430.
Built from https://develop.svn.wordpress.org/trunk@41915


git-svn-id: http://core.svn.wordpress.org/trunk@41749 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-18 17:58:48 +00:00
Sergey Biryukov
4dd637acde Docs: Add @since entry for WP_Automatic_Updater::after_core_update(), introduced in [25841].
See #41017, #29086.
Built from https://develop.svn.wordpress.org/trunk@41914


git-svn-id: http://core.svn.wordpress.org/trunk@41748 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-18 17:48:49 +00:00
Weston Ruter
ae538512c3 Widgets: Fix previewing embeds in Text widget by allowing parse-embed admin ajax requests with an empty post_ID just as WP_oEmbed_Controller::get_proxy_item_permissions_check() allows.
As of #34115 if there is no post context the oEmbed will be cached in an `oembed_cache` custom post type, so having a post as context is no longer a requirement for caching.

Props biskobe, westonruter.
See #34115, #40450.
Fixes #40854.

Built from https://develop.svn.wordpress.org/trunk@41913


git-svn-id: http://core.svn.wordpress.org/trunk@41747 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-18 17:40:49 +00:00
Sergey Biryukov
3951984680 I18N: Remove <b> tag from a translatable string in post_submit_meta_box().
Props ramiy.
Fixes #41681.
Built from https://develop.svn.wordpress.org/trunk@41910


git-svn-id: http://core.svn.wordpress.org/trunk@41744 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-18 17:31:48 +00:00
Sergey Biryukov
6b2a4c4574 I18N: Remove <strong> tag from a translatable string in Theme_Upgrader::install_strings().
Props ramiy.
Fixes #41695.
Built from https://develop.svn.wordpress.org/trunk@41909


git-svn-id: http://core.svn.wordpress.org/trunk@41743 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-18 17:20:48 +00:00
Sergey Biryukov
2b9e8abd8f I18N: Remove <code> tags from translatable strings in Core_Upgrader, Language_Pack_Upgrader, Plugin_Upgrader, Theme_Upgrader.
Props ramiy.
Fixes #41705.
Built from https://develop.svn.wordpress.org/trunk@41908


git-svn-id: http://core.svn.wordpress.org/trunk@41742 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-18 17:15:47 +00:00
Sergey Biryukov
f9ff030127 I18N: Replace hardcoded file name in a translatable string in convert_to_screen() with a placeholder.
Props ramiy.
Fixes #41668.
Built from https://develop.svn.wordpress.org/trunk@41906


git-svn-id: http://core.svn.wordpress.org/trunk@41740 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-18 15:46:52 +00:00
Gary Pendergast
3981736cd6 Dashboard: Introduce a "Try Gutenberg" callout.
To encourage more people to try Gutenberg, this new Dashboard box allows site users to easily install and try out Gutenberg.

Props pento, melchoyce, joen, karmatosed.
Fixes #41316.


Built from https://develop.svn.wordpress.org/trunk@41895


git-svn-id: http://core.svn.wordpress.org/trunk@41729 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-18 10:04:47 +00:00
Weston Ruter
bd9d1d9178 Customize: Allow post/page stubs to be edited in WP Admin as "customization drafts" when changeset is saved as draft or scheduled.
* Update stubs to have draft status when changeset is saved as draft, instead of preventing auto-draft garbage collection by giving them a far-future `post_date`.
* Show notice in publish metabox when editing a customization draft indicating that it will be published automatically with its changeset; a link to Customizer is included.
* Include a new "Customization Draft" display post state in the post list table.
* Disconnect stubs from their changesets when they are updated with a status other than "Draft".
* Trash customization drafts when their related changeset is trashed or deleted.
* Add a `_customize_changeset_uuid` postmeta to stubs to link them with their associated changeset.
* Include `customize_changeset_uuid` as context when requesting to insert a new auto-draft.

Props westonruter, melchoyce.
See #39896, #39752, #34923.
Fixes #42220.

Built from https://develop.svn.wordpress.org/trunk@41887


git-svn-id: http://core.svn.wordpress.org/trunk@41721 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-17 20:15:52 +00:00
Andrea Fercia
575e60e96c Administration: Improve consistency of the "not found" strings.
Partially reverts [41608] restoring the original strings without the word `query`.

See #37430.
Fixes #42231.

Built from https://develop.svn.wordpress.org/trunk@41878


git-svn-id: http://core.svn.wordpress.org/trunk@41712 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-16 18:14:48 +00:00
Weston Ruter
0659de4e21 File Editors: Display list of theme/plugin files in scrollable directory tree.
Props WraithKenny, afercia, melchoyce, westonruter.
Amends [41721].
Fixes #24048.

Built from https://develop.svn.wordpress.org/trunk@41851


git-svn-id: http://core.svn.wordpress.org/trunk@41685 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-13 02:39:47 +00:00
Dion Hulse
b35cf2f529 Upgrades: Remove the usage of each() from WP_Upgrader for PHP 7.2 compatibility.
Props chrisvendiadvertisingcom, dd32.
Fixes #41524

Built from https://develop.svn.wordpress.org/trunk@41821


git-svn-id: http://core.svn.wordpress.org/trunk@41655 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-11 04:24:50 +00:00
Weston Ruter
3609d0c4c5 Plugin Editor: Revert superseded changes to activate_plugin() and plugin_sandbox_scrape().
Partially revert [41671], [41561], [41560].
See #21622.
Fixes #39766.

Built from https://develop.svn.wordpress.org/trunk@41819


git-svn-id: http://core.svn.wordpress.org/trunk@41653 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-11 00:03:48 +00:00
Gary Pendergast
58db3cb54e File Editor: Add support for more than one sub-directory level.
The theme and plugin editors now list all files in the selected theme or plugin, recursing through subdirectories as necessary.

Props WraithKenny, schlessera, chsxf, MikeHansenMe, Daedalon, valendesigns, westonruter, pento.
Fixes #6531.


Built from https://develop.svn.wordpress.org/trunk@41806


git-svn-id: http://core.svn.wordpress.org/trunk@41640 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-10 05:34:49 +00:00
Weston Ruter
1a22fb3b60 File Editor: Increase robustness of fatal error checking when saving PHP file edits.
* Increase PHP execution time limit prior to issuing loopback requests where are themselves given timeouts to ensure PHP file can be reverted.
* Output scrape messages on success and failure so that absence of either can also be flagged as an error condition.
* Forward browser's HTTP Basic Auth credentials in loopback requests to admin and home URL.
* Display more helpful message when loopback request fails.

Amends [41721].
See #21622.
Fixes #42102.

Built from https://develop.svn.wordpress.org/trunk@41805


git-svn-id: http://core.svn.wordpress.org/trunk@41639 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-10 05:27:49 +00:00
Weston Ruter
35b5c9e762 Customize: Eliminate use of customize-loader in core so Customizer is opened consistently in top window.
* Open the door for future browser history feature in #28536, which is currently not feasible when customize-loader is used.
* Remove customizer-loader from being used on admin screens for Dashboard, Themes, non-shiny theme install/update.
* Keep the customize-loader functionality available for plugins, for the time being. It may become deprecated.
* Ensure `return` param in customizer links in Themes screen update to reflect `search` updated by `pushState`.
* Persist `return` when reloading Customizer due to theme switch, autosave restoration, or changeset trashing.
* Use `location.replace()` instead of changing `location.href` when trashing.
* Hide theme browser while Themes screen is loading when there is a `search` to prevent flash of unfiltered themes.
* Use throttling instead of debouncing when searching themes to ensure that screen is updated immediately on page load.
* Fix encoding and decoding of `search` param between URL and search field.
* Add support for dismissing autosaves when closing customize-loader, when it is used by plugins.
* Skip sending changeset UUID to customize-loader for population in browser location if changeset branching is not enabled.

See #28536.
Fixes #40254.

Built from https://develop.svn.wordpress.org/trunk@41797


git-svn-id: http://core.svn.wordpress.org/trunk@41631 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-09 16:04:48 +00:00
Sergey Biryukov
561bde29c7 Administration: Add .protected-post-excerpt class to password-protected post excerpts in the posts list.
Props Soean, mp518, slaFFik, SergeyBiryukov.
Fixes #41426.
Built from https://develop.svn.wordpress.org/trunk@41770


git-svn-id: http://core.svn.wordpress.org/trunk@41604 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-05 02:50:46 +00:00
Sergey Biryukov
33beafaf02 Posts, Post Types: Introduce page_attributes_misc_attributes action that fires before the help hint text in the 'Page Attributes' meta box.
Props markcallen, MikeHansenMe.
Fixes #34034.
Built from https://develop.svn.wordpress.org/trunk@41763


git-svn-id: http://core.svn.wordpress.org/trunk@41597 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-05 00:55:47 +00:00
Gary Pendergast
37aa531cd4 Plugins: Tweak the plugin icons added in [41695].
- Remove plugins icons from the plugin list table, as there were performance issues loading the icons when the site had lots of plugins.
- Depending on which icons the plugin has uploaded, prefer them in this order: `svg`, `128x128`, `256x256`.
- Improve the style of the fallback icon for plugins that don't have an icon defined.

Props Travel_girl, danieltj, afercia, karmatosed,hugobaeta, empireoflight, brentjett, melchoyce, pento.
Fixes #30186.


Built from https://develop.svn.wordpress.org/trunk@41755


git-svn-id: http://core.svn.wordpress.org/trunk@41589 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-04 23:43:46 +00:00
John Blackbourn
50948669eb Users: Revert [41613], [41614], and [41623] as this feature needs some more work.
See #38741

Built from https://develop.svn.wordpress.org/trunk@41753


git-svn-id: http://core.svn.wordpress.org/trunk@41587 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-04 22:17:46 +00:00
Mike Schroder
e8a1a7ab2b Media: Store video creation date in meta.
When able to be parsed, store the created date for a video file from meta,
since this is useful separately from the dates on the file itself.

Introduces `wp_get_media_creation_timestamp()` to read the timestamp from
getID3 and a `wp_read_video_metadata` filter analogous to
`wp_read_image_metadata`.

Fixes #35218.
Props stevegrunwell, joemcgill, desrosj, blobfolio, mikeschroder.
Built from https://develop.svn.wordpress.org/trunk@41746


git-svn-id: http://core.svn.wordpress.org/trunk@41580 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-04 19:32:47 +00:00
John Blackbourn
fbd44ee554 Security: Add a referrer policy header to the admin and login screens.
This sets a referrer policy of `same-origin` which adds hardening by preventing a referrer being sent from the admin area or login screens to other origins. This helps prevent unwanted exposure of potentially sensitive information that may be contained within URLs.

This change introduces a new filter, `admin_referrer_policy`, for filtering the referrer policy header value. The header can be disabled if necessary by removing the `wp_admin_headers` action from the `admin_init` and `login_init` hooks.

Props joostdevalk
Fixes #42036

Built from https://develop.svn.wordpress.org/trunk@41741


git-svn-id: http://core.svn.wordpress.org/trunk@41575 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-04 18:25:46 +00:00