Question

wp_ajax_parse_embed()

Apply [embed] Ajax handlers to a string.

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description

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源代码

File: wp-admin/includes/ajax-actions.php

function wp_ajax_parse_embed() {
	global $post, $wp_embed;

	if ( ! $post = get_post( (int) $_POST['post_ID'] ) ) {
		wp_send_json_error();
	}

	if ( empty( $_POST['shortcode'] ) || ! current_user_can( 'edit_post', $post->ID ) ) {
		wp_send_json_error();
	}

	$shortcode = wp_unslash( $_POST['shortcode'] );

	preg_match( '/' . get_shortcode_regex() . '/s', $shortcode, $matches );
	$atts = shortcode_parse_atts( $matches[3] );
	if ( ! empty( $matches[5] ) ) {
		$url = $matches[5];
	} elseif ( ! empty( $atts['src'] ) ) {
		$url = $atts['src'];
	} else {
		$url = '';
	}

	$parsed = false;
	setup_postdata( $post );

	$wp_embed->return_false_on_fail = true;

	if ( is_ssl() && 0 === strpos( $url, 'http://' ) ) {
		// Admin is ssl and the user pasted non-ssl URL.
		// Check if the provider supports ssl embeds and use that for the preview.
		$ssl_shortcode = preg_replace( '%^(\\[embed[^\\]]*\\])http://%i', '$1https://', $shortcode );
		$parsed = $wp_embed->run_shortcode( $ssl_shortcode );

		if ( ! $parsed ) {
			$no_ssl_support = true;
		}
	}

	if ( $url && ! $parsed ) {
		$parsed = $wp_embed->run_shortcode( $shortcode );
	}

	if ( ! $parsed ) {
		wp_send_json_error( array(
			'type' => 'not-embeddable',
			'message' => sprintf( __( '%s failed to embed.' ), '<code>' . esc_html( $url ) . '</code>' ),
		) );
	}

	if ( has_shortcode( $parsed, 'audio' ) || has_shortcode( $parsed, 'video' ) ) {
		$styles = '';
		$mce_styles = wpview_media_sandbox_styles();
		foreach ( $mce_styles as $style ) {
			$styles .= sprintf( '<link rel="stylesheet" href="%s"/>', $style );
		}

		$html = do_shortcode( $parsed );

		global $wp_scripts;
		if ( ! empty( $wp_scripts ) ) {
			$wp_scripts->done = array();
		}
		ob_start();
		wp_print_scripts( 'wp-mediaelement' );
		$scripts = ob_get_clean();

		$parsed = $styles . $html . $scripts;
	}

	if ( ! empty( $no_ssl_support ) || ( is_ssl() && ( preg_match( '%<(iframe|script|embed) [^>]*src="http://%', $parsed ) ||
		preg_match( '%<link [^>]*href="http://%', $parsed ) ) ) ) {
		// Admin is ssl and the embed is not. Iframes, scripts, and other "active content" will be blocked.
		wp_send_json_error( array(
			'type' => 'not-ssl',
			'message' => __( 'This preview is unavailable in the editor.' ),
		) );
	}

	$return = array(
		'body' => $parsed,
		'attr' => $wp_embed->last_attr
	);

	if ( strpos( $parsed, 'class="wp-embedded-content' ) ) {
		if ( defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ) {
			$script_src = includes_url( 'js/wp-embed.js' );
		} else {
			$script_src = includes_url( 'js/wp-embed.min.js' );
		}

		$return['head'] = '<script src="' . $script_src . '"></script>';
		$return['sandbox'] = true;
	}

	wp_send_json_success( $return );
}

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更新日志

Version	description
4.0.0	Introduced.

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相关函数

Uses

• wp-includes/media.php: wpview_media_sandbox_styles()
• wp-includes/capabilities.php: current_user_can()
• wp-includes/l10n.php: __()
• wp-includes/formatting.php: wp_unslash()
• wp-includes/formatting.php: esc_html()
• wp-includes/query.php: setup_postdata()
• wp-includes/functions.wp-scripts.php: wp_print_scripts()
• wp-includes/load.php: is_ssl()
• wp-includes/functions.php: wp_send_json_error()
• wp-includes/functions.php: wp_send_json_success()
• wp-includes/class-wp-embed.php: WP_Embed::run_shortcode()
• wp-includes/link-template.php: includes_url()
• wp-includes/shortcodes.php: get_shortcode_regex()
• wp-includes/shortcodes.php: shortcode_parse_atts()
• wp-includes/shortcodes.php: has_shortcode()
• wp-includes/shortcodes.php: do_shortcode()
• wp-includes/post.php: get_post()
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User Contributed Notes