Commit Graph

1535 Commits

Author SHA1 Message Date
Sergey Biryukov 8bab745586 General: In `wp_debug_backtrace_summary()`, check if `$call['args']` is defined to avoid a PHP notice.
Props paulschreiber.
Fixes #31215.
Built from https://develop.svn.wordpress.org/trunk@42824


git-svn-id: http://core.svn.wordpress.org/trunk@42654 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2018-03-10 17:31:32 +00:00
Sergey Biryukov 0b799bd6a7 General: In `wp_debug_backtrace_summary()`, capture hook name for `do_action_ref_array()` and `apply_filters_ref_array()` as well.
Props Rarst.
Fixes #43488.
Built from https://develop.svn.wordpress.org/trunk@42820


git-svn-id: http://core.svn.wordpress.org/trunk@42650 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2018-03-10 00:05:31 +00:00
Sergey Biryukov 996efe8f6e Filesystem API: Avoid an infinite loop in `wp_mkdir_p()` when trying to determine the parent folder with `open_basedir` restriction in effect.
Props soulseekah, 1265578519-1.
Fixes #43417.
Built from https://develop.svn.wordpress.org/trunk@42801


git-svn-id: http://core.svn.wordpress.org/trunk@42631 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2018-03-08 19:32:30 +00:00
Sergey Biryukov c1897645a2 General: In `wp_debug_backtrace_summary()`, normalize paths before replacement for better cross–platform compatibility.
Props Rarst.
Fixes #43501.
Built from https://develop.svn.wordpress.org/trunk@42800


git-svn-id: http://core.svn.wordpress.org/trunk@42630 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2018-03-08 17:08:31 +00:00
John Blackbourn c9b07e6411 Docs: Standardise and correct documentation relating to parameters which accept plugin names.
See #42505

Built from https://develop.svn.wordpress.org/trunk@42787


git-svn-id: http://core.svn.wordpress.org/trunk@42617 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2018-03-05 21:50:31 +00:00
Peter Wilson e6ccdf161f General: Further improve error messages following [42648].
Props kristastevens, melchoyce.
Fixes #38332 for trunk.


Built from https://develop.svn.wordpress.org/trunk@42719


git-svn-id: http://core.svn.wordpress.org/trunk@42547 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2018-02-19 02:13:32 +00:00
Drew Jaynes 6e665d1f15 Docs: Link to the "Conditional Tags" article in the Theme Developer Handbook from the descriptions for a variety of core conditional tag functions.
These notations largely serve to direct consumers (of both the source and the parsed code reference) to extended information on individual and related conditional tags throughout WordPress. The changeset also standardizes corresponding DocBlock summaries to use third-person singular verbs.

Notations been added for the following functions:

* comments_open()
* email exists()
* has_excerpt()
* has_post_thumbnail()
* has_tag()
* in_category()
* in_the_loop()
* is_404()
* is_active_sidebar()
* is_active_widget()
* is_admin()
* is_admin_bar_showing()
* is_archive()
* is_attachment()
* is_author()
* is_blog_installed()
* is_category()
* is_comments_popup()
* is_date()
* is_day()
* is_dynamic_sidebar()
* is_feed()
* is_front_page()
* is_home()
* is_local_attachment()
* is_main_query
* is_month()
* is_multi_author
* is_new_day()
* is_page()
* is_page_template()
* is_paged()
* is_plugin_active()
* is_plugin_active_for_network()
* is_plugin_inactive()
* is_plugin_page()
* is_post_type_archive()
* is_preview()
* is_rtl()
* is_search()
* is_single()
* is_singular()
* is_sticky()
* is_tag()
* is_tax()
* is_taxonomy_hierarchical()
* is_time()
* is_trackback()
* is_user_logged_in()
* is_year()
* pings_open()
* post_type_exists()
* taxonomy_exists()
* term_exists()
* username exists()
* wp_attachment_is_image()
* wp_script_is()

Props janalwin.
Fixes #43254.

Built from https://develop.svn.wordpress.org/trunk@42710


git-svn-id: http://core.svn.wordpress.org/trunk@42538 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2018-02-13 16:54:31 +00:00
Sergey Biryukov f88dddcab5 Media: Add `aac` to the list of allowed file types.
Props desrosj.
Fixes #42919.
Built from https://develop.svn.wordpress.org/trunk@42697


git-svn-id: http://core.svn.wordpress.org/trunk@42525 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2018-02-11 16:40:31 +00:00
John Blackbourn 91464bce65 Docs: Add missing code formatting to various `@since` entries.
See #42505

Built from https://develop.svn.wordpress.org/trunk@42678


git-svn-id: http://core.svn.wordpress.org/trunk@42506 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2018-02-09 16:55:31 +00:00
Peter Wilson 0d39b35c11 General: Replace `Cheatin’ uh?` with friendlier error messages.
While intended as a playful error message, `Cheatin’ uh?` can be interpreted as insulting or accusatory in an already stressful situation. This replaces Cheatin’ with more meaningful error messages, depending on the error that occurs.

Props ElectricFeet, EricMeyer, karmatosed, dd32, BandonRandon, melchoyce for language; dmsnell for original patch; peterwilsoncc.
Fixes #38332.


Built from https://develop.svn.wordpress.org/trunk@42648


git-svn-id: http://core.svn.wordpress.org/trunk@42477 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2018-02-05 02:30:34 +00:00
Sergey Biryukov e9599bc7b5 Email: Don't send notifications for site or network admin email address change to the default 'admin_email' value.
Props tigertech, MattyRob, seanchayes.
Fixes #42693.
Built from https://develop.svn.wordpress.org/trunk@42570


git-svn-id: http://core.svn.wordpress.org/trunk@42399 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2018-01-23 13:45:32 +00:00
Sergey Biryukov 13e40181eb Media: Add `flac` to the list of allowed file types.
Props blobfolio.
Fixes #42225.
Built from https://develop.svn.wordpress.org/trunk@42451


git-svn-id: http://core.svn.wordpress.org/trunk@42281 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2018-01-15 22:17:47 +00:00
Dion Hulse cdfa5adc43 Streams: When checking in `wp_is_stream()` escape the stream wrapper names for PCRE to avoid PHP warnings when invalid stream wrappers are registered.
Fixes #43054.

Built from https://develop.svn.wordpress.org/trunk@42432


git-svn-id: http://core.svn.wordpress.org/trunk@42262 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2018-01-10 02:50:46 +00:00
Dion Hulse 6322887487 Filesystem: Allow `wp_normalise_path()` to handle PHP stream wrappers such as `php://` correctly.
Props calin, dd32.
Fixes #42837.

Built from https://develop.svn.wordpress.org/trunk@42387


git-svn-id: http://core.svn.wordpress.org/trunk@42216 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-12-12 04:16:47 +00:00
Gary Pendergast aaf99e6913 Code is Poetry.
WordPress' code just... wasn't.
This is now dealt with.

Props jrf, pento, netweb, GaryJ, jdgrimes, westonruter, Greg Sherwood from PHPCS, and everyone who's ever contributed to WPCS and PHPCS.
Fixes #41057.


Built from https://develop.svn.wordpress.org/trunk@42343


git-svn-id: http://core.svn.wordpress.org/trunk@42172 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-11-30 23:11:00 +00:00
John Blackbourn 67d03a98c2 Hardening: Remove the ability to upload JavaScript files for users who do not have the `unfiltered_html` capability.
Built from https://develop.svn.wordpress.org/trunk@42261


git-svn-id: http://core.svn.wordpress.org/trunk@42090 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-11-29 16:00:48 +00:00
Gary Pendergast c90cfa3b50 General: Fix some precision alignment formatting warnings.
The WPCS `WordPress.WhiteSpace.PrecisionAlignment` rule throws warnings for a bunch of code that will likely cause issues for `wpcbf`. Fixing these manually beforehand gives us better auto-fixed results later.

See #41057.


Built from https://develop.svn.wordpress.org/trunk@42228


git-svn-id: http://core.svn.wordpress.org/trunk@42057 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-11-26 23:57:55 +00:00
Gary Pendergast a779284c00 General: Reformat inline `if ()` statements inside HTML tags.
This pattern occurs a handful of times across the codebase:

`<div class="foo<?php if ( $bar ) { echo ' baz'; } ?>">`

Unfortunately, it doesn't really play nicely with `phpcbf`, so all instances need to be removed in preperation for auto code formatting.

See #41057.


Built from https://develop.svn.wordpress.org/trunk@42217


git-svn-id: http://core.svn.wordpress.org/trunk@42046 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-11-23 04:09:49 +00:00
John Blackbourn 6e39468def HTTP API: Add support for a description for HTTP status code `103`.
Props Dhruvin

Fixes #42490

Built from https://develop.svn.wordpress.org/trunk@42207


git-svn-id: http://core.svn.wordpress.org/trunk@42036 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-11-20 20:35:48 +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 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 bcdedf7f4a Formatting: Make sure `wp_allowed_protocols()` is filterable until `wp_loaded` has fired.
Fixes the issue with plugins not being able to use the `kses_allowed_protocols` filter if `esc_url()` was called too early.

Props turtlepod, SergeyBiryukov.
Fixes #36033.
Built from https://develop.svn.wordpress.org/trunk@41990


git-svn-id: http://core.svn.wordpress.org/trunk@41824 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-24 13:25:55 +00:00
Sergey Biryukov a891bc6c92 Docs: Fix typo in `path_is_absolute()` description.
Props octalmage, birgire.
Fixes #42317.
Built from https://develop.svn.wordpress.org/trunk@41983


git-svn-id: http://core.svn.wordpress.org/trunk@41817 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-23 22:51:46 +00:00
Felix Arntz e4550efbb7 Multisite: Return `get_current_blog_id()` value instead of hard-coded 1 in `get_main_site_id()` for non-multisite environments.
See #41936.

Built from https://develop.svn.wordpress.org/trunk@41862


git-svn-id: http://core.svn.wordpress.org/trunk@41696 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-14 22:46:48 +00:00
Felix Arntz 5ea3d62192 Multisite: Take `WP_Network::$blog_id` into account in `get_main_site_id()`.
When the `WP_Network::$blog_id` property is set manually, for example in the multisite bootstrap process, `get_main_site_id()` should use that value instead of running its own logic. The main logic for the function was therefore moved into the internal `WP_Network::get_main_site_id()` method, which is now being accessed by the function through the magic property handling for `WP_Network::$blog_id` (and its equivalent `WP_Network::$site_id`).

Props spacedmonkey, jeremyfelt.
Fixes #41936.

Built from https://develop.svn.wordpress.org/trunk@41861


git-svn-id: http://core.svn.wordpress.org/trunk@41695 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-14 22:42:54 +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
John Blackbourn f9a5f5485d I18N: Allow the login screen language to be specified via a `wp_lang` query variable, and use this for the interim login modal.
This allows users who are using the admin area in a language other than the site language to read the notice on the login screen
(which explains that they need to log in again) in their chosen language.

Props Nikschavan, swissspidy

Fixes #40205

Built from https://develop.svn.wordpress.org/trunk@41692


git-svn-id: http://core.svn.wordpress.org/trunk@41526 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-10-02 23:21:47 +00:00
Gary Pendergast 0028a9555e Database: Don't quote placeholders in queries going through `$wpdb->prepare()`
To bring Core into line with the changes to `$wpdb->prepare()` in WordPress 4.8.2, query placeholders shouldn't be quoted.

Props jrf, johnjamesjacoby.
Fixes #41983.


Built from https://develop.svn.wordpress.org/trunk@41628


git-svn-id: http://core.svn.wordpress.org/trunk@41463 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-09-28 04:32:46 +00:00
John Blackbourn 255658fa31 Users: There is not, in fact, 12345 users on every WordPress installation.
Props spacedmonkey

See #38741

Built from https://develop.svn.wordpress.org/trunk@41614


git-svn-id: http://core.svn.wordpress.org/trunk@41449 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-09-27 13:07:46 +00:00
John Blackbourn 807bc5a6c9 Users: Introduce the concept of a large site in order to speed up the Users screen when there are many users.
Calling the `count_users()` function is expensive, regardless of the counting strategy that's used, and it gets
slower the more users there are on a site. In order to speed up the Users screen in the admin area, calling
`count_users()` can be avoided entirely while still displaying the total count for users.

This introduces some new functions:

* `wp_is_large_user_count()`
* `wp_get_active_user_count()`
* `wp_update_active_user_count()`

A corresponding `wp_is_large_user_count` filter is also introduced.

Props tharsheblows, johnbillion

Fixes #38741

Built from https://develop.svn.wordpress.org/trunk@41613


git-svn-id: http://core.svn.wordpress.org/trunk@41448 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-09-27 13:04:47 +00:00
Weston Ruter 3abea17301 Customize: Add `wp_is_uuid()` validation function with optional second `$version=4` parameter to enforce v4 random UUIDs.
Props jonathanbardo.
Fixes #39778.

Built from https://develop.svn.wordpress.org/trunk@41388


git-svn-id: http://core.svn.wordpress.org/trunk@41221 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-09-18 23:04:44 +00:00
Felix Arntz f2d9abd022 Multisite: Introduce `get_main_site_id()`.
This function can be used to easily get the main site ID of a given network via the optional `$network_id` parameter, which defaults to the current network. The existing `is_main_site()` now uses the new function internally and now accepts an optional `$network_id` parameter as well.

The main purpose of the new function at this point is to ensure that the `WP_Network::$blog_id` property is always set. Magic getters in the class have been adjusted to auto-fill the property when it is accessed and empty. Furthermore the function encapsulates logic that was previously part of `ms_load_current_site_and_network()` and has been replaced with a call to the function now.

Props spacedmonkey, jeremyfelt, johnjamesjacoby, flixos90.
Fixes #29684.

Built from https://develop.svn.wordpress.org/trunk@41380


git-svn-id: http://core.svn.wordpress.org/trunk@41213 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-09-15 11:15:52 +00:00
Peter Wilson 06bd0b40f9 General: Remove error screen padding for Internet Explorer.
The inline styles added to the `wp_die()` handler since [18534] increase file size of the error screen enough to prevent Internet Explorer from displaying a generic error page.

Props rfair404.
Fixes #37551.


Built from https://develop.svn.wordpress.org/trunk@41369


git-svn-id: http://core.svn.wordpress.org/trunk@41202 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-09-11 05:31:42 +00:00
John Blackbourn 28eda6f4bc General: Improve terminology used when referring to installations of WordPress and its extensions.
"Install" is not a noun, and while it might be acceptable to use the verb as a noun, it is not correct. Using the correct
noun, "installation", increases clarity, especially for non-native English speakers.

This change fixes the usage in user-facing text and in developer documentation.

Fixes #41620

Built from https://develop.svn.wordpress.org/trunk@41289


git-svn-id: http://core.svn.wordpress.org/trunk@41129 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-08-22 11:52:48 +00:00
Weston Ruter 300894da61 Customize: Prevent `_delete_option_fresh_site()` from hitting DB if `fresh_site` flag already cleared.
Amends [38991].
Props dlh, westonruter.
Fixes #41039.

Built from https://develop.svn.wordpress.org/trunk@41244


git-svn-id: http://core.svn.wordpress.org/trunk@41084 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-08-13 00:57:43 +00:00
John Blackbourn ed60c36fb8 Formatting: Add the `$number` and `$decimals` arguments to the `number_format_i18n` filter.
Props alpipego

Fixes #41505

Built from https://develop.svn.wordpress.org/trunk@41199


git-svn-id: http://core.svn.wordpress.org/trunk@41039 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-08-01 14:38:48 +00:00
John Blackbourn 6a16d726ef Options, Meta APIs: Fix a typo introduced in [41164].
See #39117

Built from https://develop.svn.wordpress.org/trunk@41167


git-svn-id: http://core.svn.wordpress.org/trunk@41007 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-07-27 03:12:44 +00:00
John Blackbourn b9b4776800 Options, Meta APIs: Send a notification to the old admin email address when the site admin email or network admin email address is changed.
This reduces the chances of a site compromise going unnoticed, in the same way that the same notifications for user account email address changes reduces the chances of a user account compromise going unnoticed.

Props MatheusGimenez, johnbillion

Fixes #39117

Built from https://develop.svn.wordpress.org/trunk@41164


git-svn-id: http://core.svn.wordpress.org/trunk@41004 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-07-27 02:24:42 +00:00
Sergey Biryukov 118dba300e Docs: Add `@staticvar` entries for `$cache` and `$tested_paths` in `wp_upload_dir()`.
Props ajayghaghretiya1.
Fixes #41395.
Built from https://develop.svn.wordpress.org/trunk@41113


git-svn-id: http://core.svn.wordpress.org/trunk@40953 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-07-21 10:15:44 +00:00
Sergey Biryukov 058c2c5ca4 Docs: Fix typo in `wp_suspend_cache_invalidation()` description.
Props euthelup, milana_cap.
Fixes #41301.
Built from https://develop.svn.wordpress.org/trunk@41031


git-svn-id: http://core.svn.wordpress.org/trunk@40881 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-07-12 21:26:44 +00:00
Sergey Biryukov 11bae4ded3 Docs: Add a `@global` entry for `$post` variable in `wp_post_preview_js()`.
Props avinapatel.
Fixes #41194.
Built from https://develop.svn.wordpress.org/trunk@40959


git-svn-id: http://core.svn.wordpress.org/trunk@40809 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-06-28 12:55:43 +00:00
Sergey Biryukov e441ee48d2 I18N: Add `@global` entry for `$wp_locale` in `wp_maybe_decline_date()`.
Props Dency.
Fixes #41046.
Built from https://develop.svn.wordpress.org/trunk@40911


git-svn-id: http://core.svn.wordpress.org/trunk@40761 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-06-15 12:24:41 +00:00
Joe McGill efab6e06ca Media: Improve handling of non-image files in wp_get_image_mime.
This prevents non-image fileypes from returning a mime type of
"application/octet-stream" when `exif_imagetype()` returns `false`.

Props blobfolio.
Fixes #40017.

Built from https://develop.svn.wordpress.org/trunk@40397


git-svn-id: http://core.svn.wordpress.org/trunk@40304 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-04-09 22:44:43 +00:00
Joe McGill 87ad9e31ab Media: Reduce failing uploads following 4.7.1.
[39831] introduced more strict MIME type checking for uploads, which
resulted in unintetionally blocking several filetypes that were
previously valid. This change uses  a more targeted approach to MIME
validation to restore previous behavior for most types.

Props blobfolio, iandunn, ipstenu, markoheijnen, xknown, joemcgill.
Fixes #39550, #39552.
Built from https://develop.svn.wordpress.org/trunk@40124


git-svn-id: http://core.svn.wordpress.org/trunk@40061 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-02-25 16:08:44 +00:00
Sergey Biryukov 8f855f46b0 Media: In `wp_unique_filename()`, use explicit type casting when incrementing `$number`.
This prevents the "non-numeric value encountered" warning in PHP 7.1, caused by trying to increment an empty string on the first loop iteration.

Props drrobotnik for initial patch.
Fixes #39774.


Built from https://develop.svn.wordpress.org/trunk@40039


git-svn-id: http://core.svn.wordpress.org/trunk@39976 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-02-03 20:58:42 +00:00
Peter Wilson c957e3acb0 Feeds: Prevent empty feeds from returning 404 errors.
Partial revert of [38929].

This reverts the source code from the commit for #30210 to prevent valid but empty feeds from returning 404 file not found errors for the home and custom feeds.

The tests in the commit that remain applicable are retained.

Props pavelevap for reporting, stevenkword for initial patch.
See #30210.
Fixes #39157.

Built from https://develop.svn.wordpress.org/trunk@40030


git-svn-id: http://core.svn.wordpress.org/trunk@39967 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-01-29 23:09:41 +00:00
Sergey Biryukov b75023ee1a Docs: Add missing `@param` type for `wp_cache_get_last_changed()`.
Props afzalmultani, Soean.
Fixes #39571.
Built from https://develop.svn.wordpress.org/trunk@39900


git-svn-id: http://core.svn.wordpress.org/trunk@39837 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-01-13 14:16:44 +00:00
Sergey Biryukov 11d81ecc7c Media: Use a consistent error message for file type errors on uploading.
Props pavelevap, jackreichert.
Fixes #33242.
Built from https://develop.svn.wordpress.org/trunk@39891


git-svn-id: http://core.svn.wordpress.org/trunk@39828 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-01-12 06:29:43 +00:00
Joe McGill 52897df8cd Media: Fix exif_imagetype check in wp_get_image_mime
This is a follow up to [39831].

Props gitlost.
See #11946.
Built from https://develop.svn.wordpress.org/trunk@39850


git-svn-id: http://core.svn.wordpress.org/trunk@39787 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-01-11 16:36:39 +00:00
Joe McGill 8eff927823 Media: Improve image filetype checking.
This adds a new function `wp_get_image_mime()` which is used by
`wp_check_filetype_and_ext()` to validate image files using
`exif_imagetype()` if available instead of `getimagesize()`.

`getimagesize()` is less performant than `exif_imagetype()` and is
dependent on GD. If `exif_imagetype()` is not available, it falls back to
`getimagesize()` as before.

If `wp_check_filetype_and_ext()` can't validate the filetype, we now return
`false` for ext/MIME values.

See #11946.
Built from https://develop.svn.wordpress.org/trunk@39831


git-svn-id: http://core.svn.wordpress.org/trunk@39769 1a063a9b-81f0-0310-95a4-ce76da25c4cd
2017-01-11 13:08:44 +00:00