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114
wp-content/plugins/jetpack/modules/shortcodes/facebook.php
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114
wp-content/plugins/jetpack/modules/shortcodes/facebook.php
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<?php
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/**
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* Facebook embeds
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*
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* @package Jetpack
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*/
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define( 'JETPACK_FACEBOOK_EMBED_REGEX', '#^https?://(www.)?facebook\.com/([^/]+)/(posts|photos)/([^/]+)?#' );
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define( 'JETPACK_FACEBOOK_ALTERNATE_EMBED_REGEX', '#^https?://(www.)?facebook\.com/permalink.php\?([^\s]+)#' );
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define( 'JETPACK_FACEBOOK_PHOTO_EMBED_REGEX', '#^https?://(www.)?facebook\.com/photo.php\?([^\s]+)#' );
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define( 'JETPACK_FACEBOOK_PHOTO_ALTERNATE_EMBED_REGEX', '#^https?://(www.)?facebook\.com/([^/]+)/photos/([^/]+)?#' );
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define( 'JETPACK_FACEBOOK_VIDEO_EMBED_REGEX', '#^https?://(www.)?facebook\.com/(?:video.php|watch\/?)\?([^\s]+)#' );
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define( 'JETPACK_FACEBOOK_VIDEO_ALTERNATE_EMBED_REGEX', '#^https?://(www.)?facebook\.com/([^/]+)/videos/([^/]+)?#' );
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/*
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* Example URL: https://www.facebook.com/VenusWilliams/posts/10151647007373076
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*/
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wp_embed_register_handler( 'facebook', JETPACK_FACEBOOK_EMBED_REGEX, 'jetpack_facebook_embed_handler' );
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/*
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* Example URL: https://www.facebook.com/permalink.php?id=222622504529111&story_fbid=559431180743788
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*/
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wp_embed_register_handler( 'facebook-alternate', JETPACK_FACEBOOK_ALTERNATE_EMBED_REGEX, 'jetpack_facebook_embed_handler' );
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/*
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* Photos are handled on a different endpoint; e.g. https://www.facebook.com/photo.php?fbid=10151609960150073&set=a.398410140072.163165.106666030072&type=1
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*/
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wp_embed_register_handler( 'facebook-photo', JETPACK_FACEBOOK_PHOTO_EMBED_REGEX, 'jetpack_facebook_embed_handler' );
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/*
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* Photos (from pages for example) can be at
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*/
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wp_embed_register_handler( 'facebook-alternate-photo', JETPACK_FACEBOOK_PHOTO_ALTERNATE_EMBED_REGEX, 'jetpack_facebook_embed_handler' );
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/*
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* Videos
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*
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* Formats:
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* https://www.facebook.com/video.php?v=2836814009877992
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* https://www.facebook.com/watch/?v=2836814009877992
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*/
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wp_embed_register_handler( 'facebook-video', JETPACK_FACEBOOK_VIDEO_EMBED_REGEX, 'jetpack_facebook_embed_handler' );
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/*
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* Videos https://www.facebook.com/WhiteHouse/videos/10153398464269238/
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*/
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wp_embed_register_handler( 'facebook-alternate-video', JETPACK_FACEBOOK_VIDEO_ALTERNATE_EMBED_REGEX, 'jetpack_facebook_embed_handler' );
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/**
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* Callback to modify output of embedded Facebook posts.
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*
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* @param array $matches Regex partial matches against the URL passed.
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* @param array $attr Attributes received in embed response.
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* @param array $url Requested URL to be embedded.
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*/
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function jetpack_facebook_embed_handler( $matches, $attr, $url ) {
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if (
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false !== strpos( $url, 'video.php' )
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|| false !== strpos( $url, '/videos/' )
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|| false !== strpos( $url, '/watch' )
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) {
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$embed = sprintf( '<div class="fb-video" data-allowfullscreen="true" data-href="%s"></div>', esc_url( $url ) );
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} else {
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$width = 552; // As of 01/2017, the default width of Facebook embeds when no width attribute provided.
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global $content_width;
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if ( isset( $content_width ) ) {
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$width = min( $width, $content_width );
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}
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$embed = sprintf( '<fb:post href="%s" data-width="%s"></fb:post>', esc_url( $url ), esc_attr( $width ) );
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}
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// since Facebook is a faux embed, we need to load the JS SDK in the wpview embed iframe.
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if (
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defined( 'DOING_AJAX' )
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&& DOING_AJAX
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// No need to check for a nonce here, that's already handled by Core further up.
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&& ! empty( $_POST['action'] ) // phpcs:ignore WordPress.Security.NonceVerification.Missing
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&& 'parse-embed' === $_POST['action'] // phpcs:ignore WordPress.Security.NonceVerification.Missing
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) {
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ob_start();
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wp_scripts()->do_items( array( 'jetpack-facebook-embed' ) );
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$scripts = ob_get_clean();
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return $embed . $scripts;
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} else {
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wp_enqueue_script( 'jetpack-facebook-embed' );
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return $embed;
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}
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}
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/**
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* Shortcode handler.
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*
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* @param array $atts Shortcode attributes.
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*/
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function jetpack_facebook_shortcode_handler( $atts ) {
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global $wp_embed;
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if ( empty( $atts['url'] ) ) {
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return;
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}
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if ( ! preg_match( JETPACK_FACEBOOK_EMBED_REGEX, $atts['url'] )
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&& ! preg_match( JETPACK_FACEBOOK_PHOTO_EMBED_REGEX, $atts['url'] )
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&& ! preg_match( JETPACK_FACEBOOK_VIDEO_EMBED_REGEX, $atts['url'] )
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&& ! preg_match( JETPACK_FACEBOOK_VIDEO_ALTERNATE_EMBED_REGEX, $atts['url'] ) ) {
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return;
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}
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return $wp_embed->shortcode( $atts, $atts['url'] );
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}
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add_shortcode( 'facebook', 'jetpack_facebook_shortcode_handler' );
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