Ticket #38181: 38181.2.diff

src/wp-includes/class-oembed.php

@@ -47 +47 @@
         private $compat_methods = array( '_fetch_with_format', '_parse_json', '_parse_xml', '_parse_body' );
 
         /**
+         * Regex used to handle Amazon oEmbed requests.
+         *
+         * @since  4.7.0
+         * @access public
+         * @var string
+         */
+        public static $oembed_amazon_format = '#https?://([a-z0-9-]+\.)?amazon\.(com|co\.uk|de|fr|it|es|co\.jp|cn|com\.au|in|com\.mx|com\.br|ca|nl|ru)/.*#i';
+
+        /**
          * Constructor.
          *
          * @since 2.9.0
@@ -104 +113 @@
                         '#https?://www\.facebook\.com/notes/.*#i'             => array( 'https://www.facebook.com/plugins/post/oembed.json/',        true  ),
                         '#https?://www\.facebook\.com/.*/videos/.*#i'         => array( 'https://www.facebook.com/plugins/video/oembed.json/',       true  ),
                         '#https?://www\.facebook\.com/video\.php.*#i'         => array( 'https://www.facebook.com/plugins/video/oembed.json/',       true  ),
+                        self::$oembed_amazon_format                           => array( 'https://read.amazon.com/kp/api/oembed',                     true  ),
+                        '#https?://(www\.)?a.co/.*#i'                         => array( 'https://read.amazon.com/kp/api/oembed',                     true  ),
+                        '#https?://(www\.)?amz.onl/.*#i'                      => array( 'https://read.amazon.com/kp/api/oembed',                     true  ),
+                        '#https?://(www\.)?amzn.to/.*#i'                      => array( 'https://read.amazon.com/kp/api/oembed',                     true  ),
+                        '#https?://(www\.)?amzn.eu/.*#i'                      => array( 'https://read.amazon.co.uk/kp/api/oembed',                   true  ),
+                        '#https?://(www\.)?amzn.in/.*#i'                      => array( 'https://read.amazon.in/kp/api/oembed',                      true  ),
+                        '#https?://(www\.)?amzn.asia/.*#i'                    => array( 'https://read.amazon.com.au/kp/api/oembed',                  true  ),
+                        '#https?://(www\.)?z.cn/.*#i'                         => array( 'https://read.amazon.cn/kp/api/oembed',                      true  ),
                 );
 
                 if ( ! empty( self::$early_providers['add'] ) ) {
@@ -174 +191 @@
                  * | Twitter      | twitter.com/timelines |      Yes       | 4.5.0     |
                  * | Twitter      | twitter.com/moments   |      Yes       | 4.5.0     |
                  * | Facebook     | facebook.com          |      Yes       | 4.7.0     |
+                 * | Amazon Kindle| a.co                  |      Yes       | 4.7.0     |
+                 * | Amazon Kindle| amzn.onl              |      Yes       | 4.7.0     |
+                 * | Amazon Kindle| amzn.to               |      Yes       | 4.7.0     |
+                 * | Amazon Kindle| amzn.eu               |      Yes       | 4.7.0     |
+                 * | Amazon Kindle| amzn.in               |      Yes       | 4.7.0     |
+                 * | Amazon Kindle| amzn.asia             |      Yes       | 4.7.0     |
+                 * | Amazon Kindle| z.cn                  |      Yes       | 4.7.0     |
                  *
                  * No longer supported providers:
                  *
@@ -683 +707 @@
 
                 return str_replace( $tokens, $pre, $stripped );
         }
+
+        /**
+         * Checks if the given URL is an Amazon URL, and if so, alters the
+         * provider's subdomain and TLD to match the URL's TLD.
+         *
+         * These transformations are applied to the oEmbed endpoint served by
+         * one of the read.amazon.com regionalized domains, which services all
+         * *.amazon.* URLs for the corresponding region.
+         *
+         * This method ensures that oEmbed requests for different Amazon
+         * marketplaces (.com, .de, .jp, etc) are routed to the correct oEmbed
+         * endpoint for those marketplaces.
+         *
+         * @since  4.7.0
+         * @access public
+         *
+         * @param string $provider The URL to the default oEmbed provider.
+         * @param string $url      The URL to the content that is desired to be embedded.
+         * @return string The URL to the oEmbed provider.
+         */
+        public function _match_amazon_tld( $provider, $url ) {
+                if ( 1 !== preg_match( self::$oembed_amazon_format, $url, $matches ) ) {
+                        return $provider;
+                }
+
+                $tld = $matches[2];
+                switch ( $tld ) {
+                        case 'de':
+                                $subdomain = 'lesen';
+                                break;
+                        case 'fr':
+                                $subdomain = 'lire';
+                                break;
+                        case 'it':
+                                $subdomain = 'leggi';
+                                break;
+                        case 'es':
+                        case 'com.mx':
+                                $subdomain = 'leer';
+                                break;
+                        case 'com.br':
+                                $subdomain = 'ler';
+                                break;
+                        case 'nl':
+                                $subdomain = 'lezen';
+                                break;
+                        default:
+                                $subdomain = 'read';
+                }
+
+                return preg_replace(
+                        '#^https://read.amazon.com/#',
+                        sprintf( 'https://%s.amazon.%s/', $subdomain, $tld ),
+                        $provider
+                );
+        }
 }