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Media: Avoid an infinite loop between wp_getimagesize() and wp_get_image_mime().

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As a result of the recent changes, both functions were calling each other if the `exif` PHP extension is not available.

The issue is now resolved by calling the `getimagesize()` PHP function directly, instead of the `wp_getimagesize()` wrapper.

Follow-up to [50146], [50810], [50814], [50815], [50818-50821].

See #35725.

git-svn-id: https://develop.svn.wordpress.org/trunk@50822 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Sergey Biryukov 2021-05-07 09:31:01 +00:00
parent 630399eb20
commit ea4707d927
1 changed files with 13 additions and 2 deletions
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15
src/wp-includes/functions.php
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@ -3044,6 +3044,7 @@ function wp_check_filetype_and_ext( $file, $filename, $mimes = null ) {
* This depends on exif_imagetype() or getimagesize() to determine real mime types.
*
* @since 4.7.1
* @since 5.8.0 Added support for WebP images.
*
* @param string $file Full path to the file.
* @return string|false The actual mime type or false if the type cannot be determined.
@ -3059,8 +3060,18 @@ function wp_get_image_mime( $file ) {
$imagetype = exif_imagetype( $file );
$mime = ( $imagetype ) ? image_type_to_mime_type( $imagetype ) : false;
} elseif ( function_exists( 'getimagesize' ) ) {
$imagesize = wp_getimagesize( $file );
$mime = ( isset( $imagesize['mime'] ) ) ? $imagesize['mime'] : false;
// Don't silence errors when in debug mode, unless running unit tests.
if ( defined( 'WP_DEBUG' ) && WP_DEBUG
&& ! defined( 'WP_RUN_CORE_TESTS' )
) {
// Not using wp_getimagesize() here to avoid an infinite loop.
$imagesize = getimagesize( $file );
} else {
// phpcs:ignore WordPress.PHP.NoSilencedErrors
$imagesize = @getimagesize( $file );
}
$mime = ( isset( $imagesize['mime'] ) ) ? $imagesize['mime'] : false;
} else {
$mime = false;
}