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<?php

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/**

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* Jetpack's Sharing feature, nee Sharedaddy.

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* The most super duper sharing tool on the interwebs.

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* @package automattic/jetpack

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if ( ! defined( 'ABSPATH' ) ) {

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exit( 0 );

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}

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// Set up Sharing in wp-admin.

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require_once plugin_dir_path( __FILE__ ) . 'sharing.php';

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/**

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* Add a meta box to the post editing screen for sharing.

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* @return void

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function sharing_add_meta_box() {

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global $post;

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if ( empty( $post ) ) { // If a current post is not defined, such as when editing a comment.

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return;

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}

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/**

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* Filter whether to display the Sharing Meta Box or not.

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* @module sharedaddy

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* @since 3.8.0

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* @param bool true Display Sharing Meta Box.

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* @param $post Post.

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if ( ! apply_filters( 'sharing_meta_box_show', true, $post ) ) {

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return;

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}

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$post_types = get_post_types( array( 'public' => true ) );

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/**

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* Filter the Sharing Meta Box title.

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* @module sharedaddy

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* @since 2.2.0

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* @param string $var Sharing Meta Box title. Default is "Sharing".

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$title = apply_filters( 'sharing_meta_box_title', __( 'Sharing', 'jetpack' ) );

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if ( $post->ID !== get_option( 'page_for_posts' ) ) {

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foreach ( $post_types as $post_type ) {

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add_meta_box( 'sharing_meta', $title, 'sharing_meta_box_content', $post_type, 'side', 'default', array( '__back_compat_meta_box' => true ) );

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}

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}

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}

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/**

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* Content of the meta box.

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* @param WP_Post $post The post to share.

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* @return void

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function sharing_meta_box_content( $post ) {

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/**

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* Fires before the sharing meta box content.

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* @module sharedaddy

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* @since 2.2.0

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* @param WP_Post $post The post to share.

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do_action( 'start_sharing_meta_box_content', $post );

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$disabled = get_post_meta( $post->ID, 'sharing_disabled', true ); ?>

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<p>

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<?php esc_html_e( 'Show sharing buttons.', 'jetpack' ); ?>

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</label>

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</p>

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<?php

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/**

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* Fires after the sharing meta box content.

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* @module sharedaddy

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* @since 2.2.0

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* @param WP_Post $post The post to share.

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do_action( 'end_sharing_meta_box_content', $post );

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}

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/**

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* Save new sharing status in post meta in the meta box.

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* @param int $post_id Post ID.

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* @return int

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function sharing_meta_box_save( $post_id ) {

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if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) {

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return $post_id;

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}

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if ( ! isset( $_POST['post_type'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Missing -- Core takes care of the validation.

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return $post_id;

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}

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$post_type_object = get_post_type_object( sanitize_key( $_POST['post_type'] ) ); // phpcs:ignore WordPress.Security.NonceVerification.Missing -- Core takes care of the validation.

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// Record sharing disable.

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if (

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$post_type_object->public

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&& current_user_can( 'edit_post', $post_id )

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&& isset( $_POST['sharing_status_hidden'] ) // phpcs:ignore WordPress.Security.NonceVerification.Missing -- Core takes care of the validation.

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) {

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if ( ! isset( $_POST['enable_post_sharing'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Missing -- Core takes care of the validation.

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update_post_meta( $post_id, 'sharing_disabled', 1 );

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} else {

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delete_post_meta( $post_id, 'sharing_disabled' );

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}

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}

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return $post_id;

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}

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/**

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* If Sharing is disabled, disable the meta box.

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* @param bool $protected Whether the key is considered protected.

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* @param string $meta_key Metadata key.

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* @return bool

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function sharing_meta_box_protected( $protected, $meta_key ) {

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if ( 'sharing_disabled' === $meta_key ) {

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$protected = true;

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}

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return $protected;

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}

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add_filter( 'is_protected_meta', 'sharing_meta_box_protected', 10, 2 );

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/**

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* Add link to sharing settings in the Plugins screen.

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* @param array $links An array of plugin action links.

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* @return array

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function sharing_plugin_settings( $links ) {

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$settings_link = '<a href="options-general.php?page=sharing.php">' . __( 'Settings', 'jetpack' ) . '</a>';

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array_unshift( $links, $settings_link );

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return $links;

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}

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/**

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* Add links to settings and support in the plugin row.

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* @param array $links An array of the plugin's metadata, including the version, author, author URI, and plugin URI.

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* @param string $file Path to the plugin file relative to the plugins directory.

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* @return array

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function sharing_add_plugin_settings( $links, $file ) {

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if ( $file === basename( __DIR__ ) . '/' . basename( __FILE__ ) ) {

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$links[] = '<a href="options-general.php?page=sharing.php">' . __( 'Settings', 'jetpack' ) . '</a>';

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$links[] = '<a href="https://support.wordpress.com/sharing/" rel="noopener noreferrer" target="_blank">' . __( 'Support', 'jetpack' ) . '</a>';

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}

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return $links;

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}

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/**

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* Disable sharing on the frontend if disabled in the admin.

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* @return void

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function sharing_init() {

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if ( Jetpack_Options::get_option_and_ensure_autoload( 'sharedaddy_disable_resources', '0' ) ) {

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add_filter( 'sharing_js', '__return_false' );

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remove_action( 'wp_head', 'sharing_add_header', 1 );

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}

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}

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/**

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* Add settings to disable CSS and JS normally enqueued by our feature.

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* @return void

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function sharing_global_resources() {

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$disable = get_option( 'sharedaddy_disable_resources' );

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<td>

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<?php

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printf(

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'<input id="disable_css" type="checkbox" name="disable_resources"%1$s /> <small><em>%2$s</em></small>',

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( 1 == $disable ) ? ' checked="checked"' : '', // phpcs:ignore Universal.Operators.StrictComparisons.LooseEqual

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esc_html__( 'Advanced. If this option is checked, you must include these files in your theme manually for the sharing links to work.', 'jetpack' )

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);

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</td>

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</tr>

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<?php

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}

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/**

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* Save settings to disable CSS and JS normally enqueued by our feature.

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* @return void

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function sharing_global_resources_save() {

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update_option( 'sharedaddy_disable_resources', isset( $_POST['disable_resources'] ) ? 1 : 0 ); // phpcs:ignore WordPress.Security.NonceVerification.Missing -- nonce handling is handled for all elements at once.

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}

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add_action( 'init', 'sharing_init' );

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add_action( 'add_meta_boxes', 'sharing_add_meta_box' );

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add_action( 'save_post', 'sharing_meta_box_save' );

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add_action( 'edit_attachment', 'sharing_meta_box_save' );

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add_action( 'sharing_global_options', 'sharing_global_resources', 30 );

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add_action( 'sharing_admin_update', 'sharing_global_resources_save' );

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add_action( 'plugin_action_links_' . basename( __DIR__ ) . '/' . basename( __FILE__ ), 'sharing_plugin_settings', 10, 4 );

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add_filter( 'plugin_row_meta', 'sharing_add_plugin_settings', 10, 2 );

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