Ticket #38181: 38181.diff

wp-includes/class-oembed.php

@@ -12 +12 @@
  */
 
 /**
+ * Regex used to handle Amazon OEmbed requests.
+ *
+ * @var string
+ */
+define( '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' );
+
+/**
  * Core class used to implement oEmbed functionality.
  *
  * @since 2.9.0
@@ -98 +105 @@
                         '#https?://videopress.com/v/.*#'                      => array( 'https://public-api.wordpress.com/oembed/1.0/?for=' . $host, true  ),
                         '#https?://(www\.)?reddit\.com/r/[^/]+/comments/.*#i' => array( 'https://www.reddit.com/oembed',                             true  ),
                         '#https?://(www\.)?speakerdeck\.com/.*#i'             => array( 'https://speakerdeck.com/oembed.{format}',                   true  ),
+                        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'] ) ) {
@@ -187 +202 @@
                  */
                 $this->providers = apply_filters( 'oembed_providers', $providers );
 
+                // Ensure that any requests for Amazon URLs are routed to the correct endpoint based on their TLD
+                add_filter( 'oembed_fetch_url', array($this, '_match_amazon_tld'), 10, 2 );
+
                 // Fix any embeds that contain new lines in the middle of the HTML which breaks wpautop().
                 add_filter( 'oembed_dataparse', array($this, '_strip_newlines'), 10, 3 );
         }
@@ -676 +694 @@
 
                 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 4.6.2
+         * @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( 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': $subdomain = 'leer'; break;
+                        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
+                );
+        }
 }
 
 /**