Adding upstream version 6.5+dfsg1.upstream/6.5+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

4 files changed, 697 insertions, 6 deletions

diff --git a/wp-includes/fonts/class-wp-font-collection.php b/wp-includes/fonts/class-wp-font-collection.php
new file mode 100644
index 0000000..b915e3e
--- /dev/null
+++ b/wp-includes/fonts/class-wp-font-collection.php
@@ -0,0 +1,295 @@
+<?php
+/**
+ * Font Collection class.
+ *
+ * This file contains the Font Collection class definition.
+ *
+ * @package    WordPress
+ * @subpackage Fonts
+ * @since      6.5.0
+ */
+
+/**
+ * Font Collection class.
+ *
+ * @since 6.5.0
+ *
+ * @see wp_register_font_collection()
+ */
+final class WP_Font_Collection {
+	/**
+	 * The unique slug for the font collection.
+	 *
+	 * @since 6.5.0
+	 * @var string
+	 */
+	public $slug;
+
+	/**
+	 * Font collection data.
+	 *
+	 * @since 6.5.0
+	 * @var array|WP_Error|null
+	 */
+	private $data;
+
+	/**
+	 * Font collection JSON file path or URL.
+	 *
+	 * @since 6.5.0
+	 * @var string|null
+	 */
+	private $src;
+
+	/**
+	 * WP_Font_Collection constructor.
+	 *
+	 * @since 6.5.0
+	 *
+	 * @param string $slug Font collection slug. May only contain alphanumeric characters, dashes,
+	 *                     and underscores. See sanitize_title().
+	 * @param array  $args Font collection data. See wp_register_font_collection() for information on accepted arguments.
+	 */
+	public function __construct( string $slug, array $args ) {
+		$this->slug = sanitize_title( $slug );
+		if ( $this->slug !== $slug ) {
+			_doing_it_wrong(
+				__METHOD__,
+				/* translators: %s: Font collection slug. */
+				sprintf( __( 'Font collection slug "%s" is not valid. Slugs must use only alphanumeric characters, dashes, and underscores.' ), $slug ),
+				'6.5.0'
+			);
+		}
+
+		$required_properties = array( 'name', 'font_families' );
+
+		if ( isset( $args['font_families'] ) && is_string( $args['font_families'] ) ) {
+			// JSON data is lazy loaded by ::get_data().
+			$this->src = $args['font_families'];
+			unset( $args['font_families'] );
+
+			$required_properties = array( 'name' );
+		}
+
+		$this->data = $this->sanitize_and_validate_data( $args, $required_properties );
+	}
+
+	/**
+	 * Retrieves the font collection data.
+	 *
+	 * @since 6.5.0
+	 *
+	 * @return array|WP_Error An array containing the font collection data, or a WP_Error on failure.
+	 */
+	public function get_data() {
+		if ( is_wp_error( $this->data ) ) {
+			return $this->data;
+		}
+
+		// If the collection uses JSON data, load it and cache the data/error.
+		if ( isset( $this->src ) ) {
+			$this->data = $this->load_from_json( $this->src );
+		}
+
+		if ( is_wp_error( $this->data ) ) {
+			return $this->data;
+		}
+
+		// Set defaults for optional properties.
+		$defaults = array(
+			'description' => '',
+			'categories'  => array(),
+		);
+
+		return wp_parse_args( $this->data, $defaults );
+	}
+
+	/**
+	 * Loads font collection data from a JSON file or URL.
+	 *
+	 * @since 6.5.0
+	 *
+	 * @param string $file_or_url File path or URL to a JSON file containing the font collection data.
+	 * @return array|WP_Error An array containing the font collection data on success,
+	 *                        else an instance of WP_Error on failure.
+	 */
+	private function load_from_json( $file_or_url ) {
+		$url  = wp_http_validate_url( $file_or_url );
+		$file = file_exists( $file_or_url ) ? wp_normalize_path( realpath( $file_or_url ) ) : false;
+
+		if ( ! $url && ! $file ) {
+			// translators: %s: File path or URL to font collection JSON file.
+			$message = __( 'Font collection JSON file is invalid or does not exist.' );
+			_doing_it_wrong( __METHOD__, $message, '6.5.0' );
+			return new WP_Error( 'font_collection_json_missing', $message );
+		}
+
+		$data = $url ? $this->load_from_url( $url ) : $this->load_from_file( $file );
+
+		if ( is_wp_error( $data ) ) {
+			return $data;
+		}
+
+		$data = array(
+			'name'          => $this->data['name'],
+			'font_families' => $data['font_families'],
+		);
+
+		if ( isset( $this->data['description'] ) ) {
+			$data['description'] = $this->data['description'];
+		}
+
+		if ( isset( $this->data['categories'] ) ) {
+			$data['categories'] = $this->data['categories'];
+		}
+
+		return $data;
+	}
+
+	/**
+	 * Loads the font collection data from a JSON file path.
+	 *
+	 * @since 6.5.0
+	 *
+	 * @param string $file File path to a JSON file containing the font collection data.
+	 * @return array|WP_Error An array containing the font collection data on success,
+	 *                        else an instance of WP_Error on failure.
+	 */
+	private function load_from_file( $file ) {
+		$data = wp_json_file_decode( $file, array( 'associative' => true ) );
+		if ( empty( $data ) ) {
+			return new WP_Error( 'font_collection_decode_error', __( 'Error decoding the font collection JSON file contents.' ) );
+		}
+
+		return $this->sanitize_and_validate_data( $data, array( 'font_families' ) );
+	}
+
+	/**
+	 * Loads the font collection data from a JSON file URL.
+	 *
+	 * @since 6.5.0
+	 *
+	 * @param string $url URL to a JSON file containing the font collection data.
+	 * @return array|WP_Error An array containing the font collection data on success,
+	 *                        else an instance of WP_Error on failure.
+	 */
+	private function load_from_url( $url ) {
+		// Limit key to 167 characters to avoid failure in the case of a long URL.
+		$transient_key = substr( 'wp_font_collection_url_' . $url, 0, 167 );
+		$data          = get_site_transient( $transient_key );
+
+		if ( false === $data ) {
+			$response = wp_safe_remote_get( $url );
+			if ( is_wp_error( $response ) || 200 !== wp_remote_retrieve_response_code( $response ) ) {
+				return new WP_Error(
+					'font_collection_request_error',
+					sprintf(
+						// translators: %s: Font collection URL.
+						__( 'Error fetching the font collection data from "%s".' ),
+						$url
+					)
+				);
+			}
+
+			$data = json_decode( wp_remote_retrieve_body( $response ), true );
+			if ( empty( $data ) ) {
+				return new WP_Error( 'font_collection_decode_error', __( 'Error decoding the font collection data from the HTTP response JSON.' ) );
+			}
+
+			// Make sure the data is valid before storing it in a transient.
+			$data = $this->sanitize_and_validate_data( $data, array( 'font_families' ) );
+			if ( is_wp_error( $data ) ) {
+				return $data;
+			}
+
+			set_site_transient( $transient_key, $data, DAY_IN_SECONDS );
+		}
+
+		return $data;
+	}
+
+	/**
+	 * Sanitizes and validates the font collection data.
+	 *
+	 * @since 6.5.0
+	 *
+	 * @param array $data                Font collection data to sanitize and validate.
+	 * @param array $required_properties Required properties that must exist in the passed data.
+	 * @return array|WP_Error Sanitized data if valid, otherwise a WP_Error instance.
+	 */
+	private function sanitize_and_validate_data( $data, $required_properties = array() ) {
+		$schema = self::get_sanitization_schema();
+		$data   = WP_Font_Utils::sanitize_from_schema( $data, $schema );
+
+		foreach ( $required_properties as $property ) {
+			if ( empty( $data[ $property ] ) ) {
+				$message = sprintf(
+					// translators: 1: Font collection slug, 2: Missing property name, e.g. "font_families".
+					__( 'Font collection "%1$s" has missing or empty property: "%2$s".' ),
+					$this->slug,
+					$property
+				);
+				_doing_it_wrong( __METHOD__, $message, '6.5.0' );
+				return new WP_Error( 'font_collection_missing_property', $message );
+			}
+		}
+
+		return $data;
+	}
+
+	/**
+	 * Retrieves the font collection sanitization schema.
+	 *
+	 * @since 6.5.0
+	 *
+	 * @return array Font collection sanitization schema.
+	 */
+	private static function get_sanitization_schema() {
+		return array(
+			'name'          => 'sanitize_text_field',
+			'description'   => 'sanitize_text_field',
+			'font_families' => array(
+				array(
+					'font_family_settings' => array(
+						'name'       => 'sanitize_text_field',
+						'slug'       => static function ( $value ) {
+							return _wp_to_kebab_case( sanitize_title( $value ) );
+						},
+						'fontFamily' => 'WP_Font_Utils::sanitize_font_family',
+						'preview'    => 'sanitize_url',
+						'fontFace'   => array(
+							array(
+								'fontFamily'            => 'sanitize_text_field',
+								'fontStyle'             => 'sanitize_text_field',
+								'fontWeight'            => 'sanitize_text_field',
+								'src'                   => static function ( $value ) {
+									return is_array( $value )
+										? array_map( 'sanitize_text_field', $value )
+										: sanitize_text_field( $value );
+								},
+								'preview'               => 'sanitize_url',
+								'fontDisplay'           => 'sanitize_text_field',
+								'fontStretch'           => 'sanitize_text_field',
+								'ascentOverride'        => 'sanitize_text_field',
+								'descentOverride'       => 'sanitize_text_field',
+								'fontVariant'           => 'sanitize_text_field',
+								'fontFeatureSettings'   => 'sanitize_text_field',
+								'fontVariationSettings' => 'sanitize_text_field',
+								'lineGapOverride'       => 'sanitize_text_field',
+								'sizeAdjust'            => 'sanitize_text_field',
+								'unicodeRange'          => 'sanitize_text_field',
+							),
+						),
+					),
+					'categories'           => array( 'sanitize_title' ),
+				),
+			),
+			'categories'    => array(
+				array(
+					'name' => 'sanitize_text_field',
+					'slug' => 'sanitize_title',
+				),
+			),
+		);
+	}
+}
diff --git a/wp-includes/fonts/class-wp-font-face-resolver.php b/wp-includes/fonts/class-wp-font-face-resolver.php
index 125ff6a..12245af 100644
--- a/wp-includes/fonts/class-wp-font-face-resolver.php
+++ b/wp-includes/fonts/class-wp-font-face-resolver.php
@@ -67,12 +67,7 @@ class WP_Font_Face_Resolver {
 					continue;
 				}
 
-				// Prepare the fonts array structure for this font-family.
-				if ( ! array_key_exists( $font_family_name, $fonts ) ) {
-					$fonts[ $font_family_name ] = array();
-				}
-
-				$fonts[ $font_family_name ] = static::convert_font_face_properties( $definition['fontFace'], $font_family_name );
+				$fonts[] = static::convert_font_face_properties( $definition['fontFace'], $font_family_name );
 			}
 		}
 
diff --git a/wp-includes/fonts/class-wp-font-library.php b/wp-includes/fonts/class-wp-font-library.php
new file mode 100644
index 0000000..3069ecb
--- /dev/null
+++ b/wp-includes/fonts/class-wp-font-library.php
@@ -0,0 +1,142 @@
+<?php
+/**
+ * Font Library class.
+ *
+ * This file contains the Font Library class definition.
+ *
+ * @package    WordPress
+ * @subpackage Fonts
+ * @since      6.5.0
+ */
+
+/**
+ * Font Library class.
+ *
+ * @since 6.5.0
+ */
+class WP_Font_Library {
+
+	/**
+	 * Font collections.
+	 *
+	 * @since 6.5.0
+	 * @var array
+	 */
+	private $collections = array();
+
+	/**
+	 * Container for the main instance of the class.
+	 *
+	 * @since 6.5.0
+	 * @var WP_Font_Library|null
+	 */
+	private static $instance = null;
+
+	/**
+	 * Register a new font collection.
+	 *
+	 * @since 6.5.0
+	 *
+	 * @param string $slug Font collection slug. May only contain alphanumeric characters, dashes,
+	 *                     and underscores. See sanitize_title().
+	 * @param array  $args Font collection data. See wp_register_font_collection() for information on accepted arguments.
+	 * @return WP_Font_Collection|WP_Error A font collection if it was registered successfully,
+	 *                                     or WP_Error object on failure.
+	 */
+	public function register_font_collection( string $slug, array $args ) {
+		$new_collection = new WP_Font_Collection( $slug, $args );
+
+		if ( $this->is_collection_registered( $new_collection->slug ) ) {
+			$error_message = sprintf(
+				/* translators: %s: Font collection slug. */
+				__( 'Font collection with slug: "%s" is already registered.' ),
+				$new_collection->slug
+			);
+			_doing_it_wrong(
+				__METHOD__,
+				$error_message,
+				'6.5.0'
+			);
+			return new WP_Error( 'font_collection_registration_error', $error_message );
+		}
+		$this->collections[ $new_collection->slug ] = $new_collection;
+		return $new_collection;
+	}
+
+	/**
+	 * Unregisters a previously registered font collection.
+	 *
+	 * @since 6.5.0
+	 *
+	 * @param string $slug Font collection slug.
+	 * @return bool True if the font collection was unregistered successfully and false otherwise.
+	 */
+	public function unregister_font_collection( string $slug ) {
+		if ( ! $this->is_collection_registered( $slug ) ) {
+			_doing_it_wrong(
+				__METHOD__,
+				/* translators: %s: Font collection slug. */
+				sprintf( __( 'Font collection "%s" not found.' ), $slug ),
+				'6.5.0'
+			);
+			return false;
+		}
+		unset( $this->collections[ $slug ] );
+		return true;
+	}
+
+	/**
+	 * Checks if a font collection is registered.
+	 *
+	 * @since 6.5.0
+	 *
+	 * @param string $slug Font collection slug.
+	 * @return bool True if the font collection is registered and false otherwise.
+	 */
+	private function is_collection_registered( string $slug ) {
+		return array_key_exists( $slug, $this->collections );
+	}
+
+	/**
+	 * Gets all the font collections available.
+	 *
+	 * @since 6.5.0
+	 *
+	 * @return array List of font collections.
+	 */
+	public function get_font_collections() {
+		return $this->collections;
+	}
+
+	/**
+	 * Gets a font collection.
+	 *
+	 * @since 6.5.0
+	 *
+	 * @param string $slug Font collection slug.
+	 * @return WP_Font_Collection|null Font collection object, or null if the font collection doesn't exist.
+	 */
+	public function get_font_collection( string $slug ) {
+		if ( $this->is_collection_registered( $slug ) ) {
+			return $this->collections[ $slug ];
+		}
+		return null;
+	}
+
+	/**
+	 * Utility method to retrieve the main instance of the class.
+	 *
+	 * The instance will be created if it does not exist yet.
+	 *
+	 * @since 6.5.0
+	 *
+	 * @return WP_Font_Library The main instance.
+	 */
+	public static function get_instance() {
+		if ( null === self::$instance ) {
+			self::$instance = new self();
+		}
+
+		return self::$instance;
+	}
+}
diff --git a/wp-includes/fonts/class-wp-font-utils.php b/wp-includes/fonts/class-wp-font-utils.php
new file mode 100644
index 0000000..6e91440
--- /dev/null
+++ b/wp-includes/fonts/class-wp-font-utils.php
@@ -0,0 +1,259 @@
+<?php
+/**
+ * Font Utils class.
+ *
+ * Provides utility functions for working with font families.
+ *
+ * @package    WordPress
+ * @subpackage Fonts
+ * @since      6.5.0
+ */
+
+/**
+ * A class of utilities for working with the Font Library.
+ *
+ * These utilities may change or be removed in the future and are intended for internal use only.
+ *
+ * @since 6.5.0
+ * @access private
+ */
+class WP_Font_Utils {
+	/**
+	 * Adds surrounding quotes to font family names that contain special characters.
+	 *
+	 * It follows the recommendations from the CSS Fonts Module Level 4.
+	 * @link https://www.w3.org/TR/css-fonts-4/#font-family-prop
+	 *
+	 * @since 6.5.0
+	 *
+	 * @param string $item A font family name.
+	 * @return string The font family name with surrounding quotes, if necessary.
+	 */
+	private static function maybe_add_quotes( $item ) {
+		// Matches strings that are not exclusively alphabetic characters or hyphens, and do not exactly follow the pattern generic(alphabetic characters or hyphens).
+		$regex = '/^(?!generic\([a-zA-Z\-]+\)$)(?!^[a-zA-Z\-]+$).+/';
+		$item  = trim( $item );
+		if ( preg_match( $regex, $item ) ) {
+			$item = trim( $item, "\"'" );
+			return '"' . $item . '"';
+		}
+		return $item;
+	}
+
+	/**
+	 * Sanitizes and formats font family names.
+	 *
+	 * - Applies `sanitize_text_field`.
+	 * - Adds surrounding quotes to names containing any characters that are not alphabetic or dashes.
+	 *
+	 * It follows the recommendations from the CSS Fonts Module Level 4.
+	 * @link https://www.w3.org/TR/css-fonts-4/#font-family-prop
+	 *
+	 * @since 6.5.0
+	 * @access private
+	 *
+	 * @see sanitize_text_field()
+	 *
+	 * @param string $font_family Font family name(s), comma-separated.
+	 * @return string Sanitized and formatted font family name(s).
+	 */
+	public static function sanitize_font_family( $font_family ) {
+		if ( ! $font_family ) {
+			return '';
+		}
+
+		$output          = sanitize_text_field( $font_family );
+		$formatted_items = array();
+		if ( str_contains( $output, ',' ) ) {
+			$items = explode( ',', $output );
+			foreach ( $items as $item ) {
+				$formatted_item = self::maybe_add_quotes( $item );
+				if ( ! empty( $formatted_item ) ) {
+					$formatted_items[] = $formatted_item;
+				}
+			}
+			return implode( ', ', $formatted_items );
+		}
+		return self::maybe_add_quotes( $output );
+	}
+
+	/**
+	 * Generates a slug from font face properties, e.g. `open sans;normal;400;100%;U+0-10FFFF`
+	 *
+	 * Used for comparison with other font faces in the same family, to prevent duplicates
+	 * that would both match according the CSS font matching spec. Uses only simple case-insensitive
+	 * matching for fontFamily and unicodeRange, so does not handle overlapping font-family lists or
+	 * unicode ranges.
+	 *
+	 * @since 6.5.0
+	 * @access private
+	 *
+	 * @link https://drafts.csswg.org/css-fonts/#font-style-matching
+	 *
+	 * @param array $settings {
+	 *     Font face settings.
+	 *
+	 *     @type string $fontFamily   Font family name.
+	 *     @type string $fontStyle    Optional font style, defaults to 'normal'.
+	 *     @type string $fontWeight   Optional font weight, defaults to 400.
+	 *     @type string $fontStretch  Optional font stretch, defaults to '100%'.
+	 *     @type string $unicodeRange Optional unicode range, defaults to 'U+0-10FFFF'.
+	 * }
+	 * @return string Font face slug.
+	 */
+	public static function get_font_face_slug( $settings ) {
+		$defaults = array(
+			'fontFamily'   => '',
+			'fontStyle'    => 'normal',
+			'fontWeight'   => '400',
+			'fontStretch'  => '100%',
+			'unicodeRange' => 'U+0-10FFFF',
+		);
+		$settings = wp_parse_args( $settings, $defaults );
+		if ( function_exists( 'mb_strtolower' ) ) {
+			$font_family = mb_strtolower( $settings['fontFamily'] );
+		} else {
+			$font_family = strtolower( $settings['fontFamily'] );
+		}
+		$font_style    = strtolower( $settings['fontStyle'] );
+		$font_weight   = strtolower( $settings['fontWeight'] );
+		$font_stretch  = strtolower( $settings['fontStretch'] );
+		$unicode_range = strtoupper( $settings['unicodeRange'] );
+
+		// Convert weight keywords to numeric strings.
+		$font_weight = str_replace( array( 'normal', 'bold' ), array( '400', '700' ), $font_weight );
+
+		// Convert stretch keywords to numeric strings.
+		$font_stretch_map = array(
+			'ultra-condensed' => '50%',
+			'extra-condensed' => '62.5%',
+			'condensed'       => '75%',
+			'semi-condensed'  => '87.5%',
+			'normal'          => '100%',
+			'semi-expanded'   => '112.5%',
+			'expanded'        => '125%',
+			'extra-expanded'  => '150%',
+			'ultra-expanded'  => '200%',
+		);
+		$font_stretch     = str_replace( array_keys( $font_stretch_map ), array_values( $font_stretch_map ), $font_stretch );
+
+		$slug_elements = array( $font_family, $font_style, $font_weight, $font_stretch, $unicode_range );
+
+		$slug_elements = array_map(
+			function ( $elem ) {
+				// Remove quotes to normalize font-family names, and ';' to use as a separator.
+				$elem = trim( str_replace( array( '"', "'", ';' ), '', $elem ) );
+
+				// Normalize comma separated lists by removing whitespace in between items,
+				// but keep whitespace within items (e.g. "Open Sans" and "OpenSans" are different fonts).
+				// CSS spec for whitespace includes: U+000A LINE FEED, U+0009 CHARACTER TABULATION, or U+0020 SPACE,
+				// which by default are all matched by \s in PHP.
+				return preg_replace( '/,\s+/', ',', $elem );
+			},
+			$slug_elements
+		);
+
+		return sanitize_text_field( implode( ';', $slug_elements ) );
+	}
+
+	/**
+	 * Sanitizes a tree of data using a schema.
+	 *
+	 * The schema structure should mirror the data tree. Each value provided in the
+	 * schema should be a callable that will be applied to sanitize the corresponding
+	 * value in the data tree. Keys that are in the data tree, but not present in the
+	 * schema, will be removed in the sanitized data. Nested arrays are traversed recursively.
+	 *
+	 * @since 6.5.0
+	 *
+	 * @access private
+	 *
+	 * @param array $tree   The data to sanitize.
+	 * @param array $schema The schema used for sanitization.
+	 * @return array The sanitized data.
+	 */
+	public static function sanitize_from_schema( $tree, $schema ) {
+		if ( ! is_array( $tree ) || ! is_array( $schema ) ) {
+			return array();
+		}
+
+		foreach ( $tree as $key => $value ) {
+			// Remove keys not in the schema or with null/empty values.
+			if ( ! array_key_exists( $key, $schema ) ) {
+				unset( $tree[ $key ] );
+				continue;
+			}
+
+			$is_value_array  = is_array( $value );
+			$is_schema_array = is_array( $schema[ $key ] ) && ! is_callable( $schema[ $key ] );
+
+			if ( $is_value_array && $is_schema_array ) {
+				if ( wp_is_numeric_array( $value ) ) {
+					// If indexed, process each item in the array.
+					foreach ( $value as $item_key => $item_value ) {
+						$tree[ $key ][ $item_key ] = isset( $schema[ $key ][0] ) && is_array( $schema[ $key ][0] )
+							? self::sanitize_from_schema( $item_value, $schema[ $key ][0] )
+							: self::apply_sanitizer( $item_value, $schema[ $key ][0] );
+					}
+				} else {
+					// If it is an associative or indexed array, process as a single object.
+					$tree[ $key ] = self::sanitize_from_schema( $value, $schema[ $key ] );
+				}
+			} elseif ( ! $is_value_array && $is_schema_array ) {
+				// If the value is not an array but the schema is, remove the key.
+				unset( $tree[ $key ] );
+			} elseif ( ! $is_schema_array ) {
+				// If the schema is not an array, apply the sanitizer to the value.
+				$tree[ $key ] = self::apply_sanitizer( $value, $schema[ $key ] );
+			}
+
+			// Remove keys with null/empty values.
+			if ( empty( $tree[ $key ] ) ) {
+				unset( $tree[ $key ] );
+			}
+		}
+
+		return $tree;
+	}
+
+	/**
+	 * Applies a sanitizer function to a value.
+	 *
+	 * @since 6.5.0
+	 *
+	 * @param mixed $value     The value to sanitize.
+	 * @param mixed $sanitizer The sanitizer function to apply.
+	 * @return mixed The sanitized value.
+	 */
+	private static function apply_sanitizer( $value, $sanitizer ) {
+		if ( null === $sanitizer ) {
+			return $value;
+
+		}
+		return call_user_func( $sanitizer, $value );
+	}
+
+	/**
+	 * Returns the expected mime-type values for font files, depending on PHP version.
+	 *
+	 * This is needed because font mime types vary by PHP version, so checking the PHP version
+	 * is necessary until a list of valid mime-types for each file extension can be provided to
+	 * the 'upload_mimes' filter.
+	 *
+	 * @since 6.5.0
+	 *
+	 * @access private
+	 *
+	 * @return array A collection of mime types keyed by file extension.
+	 */
+	public static function get_allowed_font_mime_types() {
+		$php_7_ttf_mime_type = PHP_VERSION_ID >= 70300 ? 'application/font-sfnt' : 'application/x-font-ttf';
+
+		return array(
+			'otf'   => 'application/vnd.ms-opentype',
+			'ttf'   => PHP_VERSION_ID >= 70400 ? 'font/sfnt' : $php_7_ttf_mime_type,
+			'woff'  => PHP_VERSION_ID >= 80112 ? 'font/woff' : 'application/font-woff',
+			'woff2' => PHP_VERSION_ID >= 80112 ? 'font/woff2' : 'application/font-woff2',
+		);
+	}
+}