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| 1 | <?php |
| 2 | /** |
| 3 | * Jetpack's Sharing feature, nee Sharedaddy. |
| 4 | * The most super duper sharing tool on the interwebs. |
| 5 | * |
| 6 | * @package automattic/jetpack |
| 7 | */ |
| 8 | |
| 9 | if ( ! defined( 'ABSPATH' ) ) { |
| 10 | exit( 0 ); |
| 11 | } |
| 12 | |
| 13 | // Set up Sharing in wp-admin. |
| 14 | require_once plugin_dir_path( __FILE__ ) . 'sharing.php'; |
| 15 | |
| 16 | /** |
| 17 | * Add a meta box to the post editing screen for sharing. |
| 18 | * |
| 19 | * @return void |
| 20 | */ |
| 21 | function sharing_add_meta_box() { |
| 22 | global $post; |
| 23 | if ( empty( $post ) ) { // If a current post is not defined, such as when editing a comment. |
| 24 | return; |
| 25 | } |
| 26 | |
| 27 | /** |
| 28 | * Filter whether to display the Sharing Meta Box or not. |
| 29 | * |
| 30 | * @module sharedaddy |
| 31 | * |
| 32 | * @since 3.8.0 |
| 33 | * |
| 34 | * @param bool true Display Sharing Meta Box. |
| 35 | * @param $post Post. |
| 36 | */ |
| 37 | if ( ! apply_filters( 'sharing_meta_box_show', true, $post ) ) { |
| 38 | return; |
| 39 | } |
| 40 | |
| 41 | $post_types = get_post_types( array( 'public' => true ) ); |
| 42 | /** |
| 43 | * Filter the Sharing Meta Box title. |
| 44 | * |
| 45 | * @module sharedaddy |
| 46 | * |
| 47 | * @since 2.2.0 |
| 48 | * |
| 49 | * @param string $var Sharing Meta Box title. Default is "Sharing". |
| 50 | */ |
| 51 | $title = apply_filters( 'sharing_meta_box_title', __( 'Sharing', 'jetpack' ) ); |
| 52 | if ( $post->ID !== get_option( 'page_for_posts' ) ) { |
| 53 | foreach ( $post_types as $post_type ) { |
| 54 | add_meta_box( 'sharing_meta', $title, 'sharing_meta_box_content', $post_type, 'side', 'default', array( '__back_compat_meta_box' => true ) ); |
| 55 | } |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | /** |
| 60 | * Content of the meta box. |
| 61 | * |
| 62 | * @param WP_Post $post The post to share. |
| 63 | * |
| 64 | * @return void |
| 65 | */ |
| 66 | function sharing_meta_box_content( $post ) { |
| 67 | /** |
| 68 | * Fires before the sharing meta box content. |
| 69 | * |
| 70 | * @module sharedaddy |
| 71 | * |
| 72 | * @since 2.2.0 |
| 73 | * |
| 74 | * @param WP_Post $post The post to share. |
| 75 | */ |
| 76 | do_action( 'start_sharing_meta_box_content', $post ); |
| 77 | |
| 78 | $disabled = get_post_meta( $post->ID, 'sharing_disabled', true ); ?> |
| 79 | |
| 80 | <p> |
| 81 | <label for="enable_post_sharing"> |
| 82 | <input type="checkbox" name="enable_post_sharing" id="enable_post_sharing" value="1" <?php checked( ! $disabled ); ?>> |
| 83 | <?php esc_html_e( 'Show sharing buttons.', 'jetpack' ); ?> |
| 84 | </label> |
| 85 | <input type="hidden" name="sharing_status_hidden" value="1" /> |
| 86 | </p> |
| 87 | |
| 88 | <?php |
| 89 | /** |
| 90 | * Fires after the sharing meta box content. |
| 91 | * |
| 92 | * @module sharedaddy |
| 93 | * |
| 94 | * @since 2.2.0 |
| 95 | * |
| 96 | * @param WP_Post $post The post to share. |
| 97 | */ |
| 98 | do_action( 'end_sharing_meta_box_content', $post ); |
| 99 | } |
| 100 | |
| 101 | /** |
| 102 | * Save new sharing status in post meta in the meta box. |
| 103 | * |
| 104 | * @param int $post_id Post ID. |
| 105 | * |
| 106 | * @return int |
| 107 | */ |
| 108 | function sharing_meta_box_save( $post_id ) { |
| 109 | if ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE ) { |
| 110 | return $post_id; |
| 111 | } |
| 112 | |
| 113 | if ( ! isset( $_POST['post_type'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Missing -- Core takes care of the validation. |
| 114 | return $post_id; |
| 115 | } |
| 116 | |
| 117 | $post_type_object = get_post_type_object( sanitize_key( $_POST['post_type'] ) ); // phpcs:ignore WordPress.Security.NonceVerification.Missing -- Core takes care of the validation. |
| 118 | |
| 119 | // Record sharing disable. |
| 120 | if ( |
| 121 | $post_type_object instanceof \WP_Post_Type |
| 122 | && $post_type_object->public |
| 123 | && current_user_can( 'edit_post', $post_id ) |
| 124 | && isset( $_POST['sharing_status_hidden'] ) // phpcs:ignore WordPress.Security.NonceVerification.Missing -- Core takes care of the validation. |
| 125 | ) { |
| 126 | if ( ! isset( $_POST['enable_post_sharing'] ) ) { // phpcs:ignore WordPress.Security.NonceVerification.Missing -- Core takes care of the validation. |
| 127 | update_post_meta( $post_id, 'sharing_disabled', 1 ); |
| 128 | } else { |
| 129 | delete_post_meta( $post_id, 'sharing_disabled' ); |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | return $post_id; |
| 134 | } |
| 135 | |
| 136 | /** |
| 137 | * If Sharing is disabled, disable the meta box. |
| 138 | * |
| 139 | * @param bool $protected Whether the key is considered protected. |
| 140 | * @param string $meta_key Metadata key. |
| 141 | * |
| 142 | * @return bool |
| 143 | */ |
| 144 | function sharing_meta_box_protected( $protected, $meta_key ) { |
| 145 | if ( 'sharing_disabled' === $meta_key ) { |
| 146 | $protected = true; |
| 147 | } |
| 148 | |
| 149 | return $protected; |
| 150 | } |
| 151 | add_filter( 'is_protected_meta', 'sharing_meta_box_protected', 10, 2 ); |
| 152 | |
| 153 | /** |
| 154 | * Add link to sharing settings in the Plugins screen. |
| 155 | * |
| 156 | * @param array $links An array of plugin action links. |
| 157 | * |
| 158 | * @return array |
| 159 | */ |
| 160 | function sharing_plugin_settings( $links ) { |
| 161 | $settings_link = '<a href="options-general.php?page=sharing.php">' . __( 'Settings', 'jetpack' ) . '</a>'; |
| 162 | array_unshift( $links, $settings_link ); |
| 163 | return $links; |
| 164 | } |
| 165 | |
| 166 | /** |
| 167 | * Add links to settings and support in the plugin row. |
| 168 | * |
| 169 | * @param array $links An array of the plugin's metadata, including the version, author, author URI, and plugin URI. |
| 170 | * @param string $file Path to the plugin file relative to the plugins directory. |
| 171 | * |
| 172 | * @return array |
| 173 | */ |
| 174 | function sharing_add_plugin_settings( $links, $file ) { |
| 175 | if ( $file === basename( __DIR__ ) . '/' . basename( __FILE__ ) ) { |
| 176 | $links[] = '<a href="options-general.php?page=sharing.php">' . __( 'Settings', 'jetpack' ) . '</a>'; |
| 177 | $links[] = '<a href="https://support.wordpress.com/sharing/" rel="noopener noreferrer" target="_blank">' . __( 'Support', 'jetpack' ) . '</a>'; |
| 178 | } |
| 179 | |
| 180 | return $links; |
| 181 | } |
| 182 | |
| 183 | /** |
| 184 | * Disable sharing on the frontend if disabled in the admin. |
| 185 | * |
| 186 | * @return void |
| 187 | */ |
| 188 | function sharing_init() { |
| 189 | if ( Jetpack_Options::get_option_and_ensure_autoload( 'sharedaddy_disable_resources', '0' ) ) { |
| 190 | add_filter( 'sharing_js', '__return_false' ); |
| 191 | remove_action( 'wp_head', 'sharing_add_header', 1 ); |
| 192 | } |
| 193 | } |
| 194 | |
| 195 | /** |
| 196 | * Add settings to disable CSS and JS normally enqueued by our feature. |
| 197 | * |
| 198 | * @return void |
| 199 | */ |
| 200 | function sharing_global_resources() { |
| 201 | $disable = get_option( 'sharedaddy_disable_resources' ); |
| 202 | ?> |
| 203 | <tr valign="top"> |
| 204 | <th scope="row"><label for="disable_css"><?php esc_html_e( 'Disable CSS and JS', 'jetpack' ); ?></label></th> |
| 205 | <td> |
| 206 | <?php |
| 207 | printf( |
| 208 | '<input id="disable_css" type="checkbox" name="disable_resources"%1$s /> <small><em>%2$s</em></small>', |
| 209 | ( 1 == $disable ) ? ' checked="checked"' : '', // phpcs:ignore Universal.Operators.StrictComparisons.LooseEqual |
| 210 | esc_html__( 'Advanced. If this option is checked, you must include these files in your theme manually for the sharing links to work.', 'jetpack' ) |
| 211 | ); |
| 212 | ?> |
| 213 | </td> |
| 214 | </tr> |
| 215 | <?php |
| 216 | } |
| 217 | |
| 218 | /** |
| 219 | * Save settings to disable CSS and JS normally enqueued by our feature. |
| 220 | * |
| 221 | * @return void |
| 222 | */ |
| 223 | function sharing_global_resources_save() { |
| 224 | 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. |
| 225 | } |
| 226 | |
| 227 | add_action( 'init', 'sharing_init' ); |
| 228 | add_action( 'add_meta_boxes', 'sharing_add_meta_box' ); |
| 229 | add_action( 'save_post', 'sharing_meta_box_save' ); |
| 230 | add_action( 'edit_attachment', 'sharing_meta_box_save' ); |
| 231 | add_action( 'sharing_global_options', 'sharing_global_resources', 30 ); |
| 232 | add_action( 'sharing_admin_update', 'sharing_global_resources_save' ); |
| 233 | add_action( 'plugin_action_links_' . basename( __DIR__ ) . '/' . basename( __FILE__ ), 'sharing_plugin_settings', 10, 4 ); |
| 234 | add_filter( 'plugin_row_meta', 'sharing_add_plugin_settings', 10, 2 ); |