options = $options_handler->get_options(); } } /** * Registers hook callbacks. * * @since 0.4.0 */ public function register() { add_action( 'add_meta_boxes', array( $this, 'add_meta_box' ) ); add_action( 'transition_post_status', array( $this, 'update_meta' ), 11, 3 ); add_action( 'transition_post_status', array( $this, 'toot' ), 999, 3 ); add_action( 'admin_enqueue_scripts', array( $this, 'enqueue_scripts' ) ); add_action( 'wp_ajax_share_on_pixelfed_unlink_url', array( $this, 'unlink_url' ) ); } /** * Registers a new meta box. * * @since 0.1.0 */ public function add_meta_box() { if ( empty( $this->options['post_types'] ) ) { // Sharing disabled for all post types. return; } add_meta_box( 'share-on-pixelfed', __( 'Share on Pixelfed', 'share-on-pixelfed' ), array( $this, 'render_meta_box' ), (array) $this->options['post_types'], 'side', 'default' ); } /** * Renders custom fields meta boxes on the custom post type edit page. * * @since 0.1.0 * @param WP_Post $post Post being edited. */ public function render_meta_box( $post ) { wp_nonce_field( basename( __FILE__ ), 'share_on_pixelfed_nonce' ); $check = array( '', '1' ); if ( apply_filters( 'share_on_pixelfed_optin', false ) ) { $check = array( '1' ); // Make sharing opt-in. } ?> ID, '_share_on_pixelfed', true ), $check, true ) ); ?>> ID, '_share_on_pixelfed_url', true ); if ( '' !== $url && false !== wp_http_validate_url( $url ) ) : $url_parts = wp_parse_url( $url ); $display_url = ''; $display_url .= '' . substr( $url_parts['host'] . $url_parts['path'], 0, 20 ) . ''; ?>

' . $display_url . '' ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped ?>

ID ) || wp_is_post_autosave( $post->ID ) ) { // Prevent double posting. return; } if ( ! current_user_can( 'edit_post', $post->ID ) ) { return; } if ( ! isset( $_POST['share_on_pixelfed_nonce'] ) || ! wp_verify_nonce( sanitize_key( $_POST['share_on_pixelfed_nonce'] ), basename( __FILE__ ) ) ) { // Nonce missing or invalid. return; } if ( ! in_array( $post->post_type, (array) $this->options['post_types'], true ) ) { // Unsupported post type. return; } if ( isset( $_POST['share_on_pixelfed'] ) && ! post_password_required( $post ) ) { // If sharing enabled and post not password-protected. update_post_meta( $post->ID, '_share_on_pixelfed', '1' ); } else { update_post_meta( $post->ID, '_share_on_pixelfed', '0' ); } } /** * Shares a post on Pixelfed. * * @since 0.1.0 * * @param string $new_status New post status. * @param string $old_status Old post status. * @param WP_Post $post Post object. */ public function toot( $new_status, $old_status, $post ) { if ( wp_is_post_revision( $post->ID ) || wp_is_post_autosave( $post->ID ) ) { // Prevent accidental double posting. return; } $is_enabled = ( '1' === get_post_meta( $post->ID, '_share_on_pixelfed', true ) ? true : false ); if ( ! apply_filters( 'share_on_pixelfed_enabled', $is_enabled, $post ) ) { // Disabled for this post. error_log( "[Share on Pixelfed] Sharing is disabled for the post with ID {$post->ID}." ); return; } if ( 'publish' !== $new_status ) { // Status is something other than `publish`. error_log( "[Share on Pixelfed] The post with ID {$post->ID} isn't yet (or no longer) published. Skipping." ); return; } if ( '' !== get_post_meta( $post->ID, '_share_on_pixelfed_url', true ) ) { // Prevent duplicate statuses. error_log( "[Share on Pixelfed] The post with ID {$post->ID} was shared before. Skipping." ); return; } if ( post_password_required( $post ) ) { // Post is password-protected. error_log( "[Share on Pixelfed] The post with ID {$post->ID} is password protected. Skipping." ); return; } if ( ! in_array( $post->post_type, (array) $this->options['post_types'], true ) ) { // Unsupported post type. error_log( "[Share on Pixelfed] The post with ID {$post->ID} is of an unsupported post type. Skipping." ); return; } if ( empty( $this->options['pixelfed_host'] ) ) { error_log( "[Share on Pixelfed] Missing instance setting." ); return; } if ( ! wp_http_validate_url( $this->options['pixelfed_host'] ) ) { error_log( "[Share on Pixelfed] Invalid instance URL." ); return; } if ( empty( $this->options['pixelfed_access_token'] ) ) { error_log( "[Share on Pixelfed] Missing access token." ); return; } // Upload image. $media_id = $this->upload_thumbnail( $post->ID ); if ( empty( $media_id ) ) { // Something went wrong uploading the image. return; } $status = wp_strip_all_tags( get_the_title( $post->ID ) ) . ' ' . esc_url_raw( get_permalink( $post->ID ) ); $status = apply_filters( 'share_on_pixelfed_status', $status, $post ); // Encode, build query string. $query_string = http_build_query( array( 'status' => $status, 'visibility' => 'public', // Required (?) by Pixelfed. ) ); // Handle after `http_build_query()`, as apparently the API // doesn't like numbers for query string array keys. $query_string .= '&media_ids[]=' . rawurlencode( $media_id ); $response = wp_remote_post( esc_url_raw( $this->options['pixelfed_host'] . '/api/v1/statuses' ), array( 'headers' => array( 'Authorization' => 'Bearer ' . $this->options['pixelfed_access_token'], ), // Prevent WordPress from applying `http_build_query()`, for the // same reason. 'data_format' => 'body', 'body' => $query_string, 'timeout' => 20, ) ); if ( is_wp_error( $response ) ) { // An error occurred. error_log( print_r( $response, true ) ); // phpcs:ignore WordPress.PHP.DevelopmentFunctions return; } // Decode JSON, suppressing possible formatting errors. $status = @json_decode( $response['body'] ); if ( ! empty( $status->url ) && post_type_supports( $post->post_type, 'custom-fields' ) ) { update_post_meta( $post->ID, '_share_on_pixelfed_url', $status->url ); } else { // Provided debugging's enabled, let's store the (somehow faulty) // response. error_log( print_r( $response, true ) ); // phpcs:ignore WordPress.PHP.DevelopmentFunctions } } /** * Uploads a post thumbnail and returns a (single) media ID. * * @since 0.1.0 * * @param int $post_id Post ID. * * @return string|null Unique media ID, or nothing on failure. */ private function upload_thumbnail( $post_id ) { $file_path = ''; if ( isset( $this->options['use_first_image'] ) && $this->options['use_first_image'] ) { // Using first image rather than post thumbnail. $file_path = $this->find_first_image( $post_id ); } elseif ( has_post_thumbnail( $post_id ) ) { // Get post thumbnail (i.e., Featured Image). $thumb_id = get_post_thumbnail_id( $post_id ); // Then, grab the "large" image. $image = wp_get_attachment_image_src( $thumb_id, apply_filters( 'share_on_pixelfed_image_size', 'large', $thumb_id ) ); $uploads = wp_upload_dir(); if ( ! empty( $image[0] ) && 0 === strpos( $image[0], $uploads['baseurl'] ) ) { // Found a "large" thumbnail that lives on our own site (and not, // e.g., a CDN). $url = $image[0]; error_log( "[Share on Pixelfed] Found {$url}." ); } else { // Get the original image instead. $url = wp_get_attachment_url( $thumb_id ); // Original image URL. error_log( "[Share on Pixelfed] Found {$url}." ); } $file_path = str_replace( $uploads['baseurl'], $uploads['basedir'], $url ); } else { error_log( "[Share on Pixelfed] No Featured Image set for the post with ID {$post_id}." ); } $file_path = apply_filters( 'share_on_pixelfed_image_path', $file_path, $post_id ); if ( ! is_file( $file_path ) ) { // File doesn't seem to exist. error_log( "[Share on Pixelfed] No such file exists ({$file_path})." ); return; } $boundary = md5( time() ); $eol = "\r\n"; $body = '--' . $boundary . $eol; $body .= 'Content-Disposition: form-data; name="file"; filename="' . basename( $file_path ) . '"' . $eol; $body .= 'Content-Type: ' . mime_content_type( $file_path ) . $eol . $eol; $body .= file_get_contents( $file_path ) . $eol; // phpcs:ignore WordPress.WP.AlternativeFunctions.file_get_contents_file_get_contents $body .= '--' . $boundary . '--'; $response = wp_remote_post( esc_url_raw( $this->options['pixelfed_host'] . '/api/v1/media' ), array( 'headers' => array( 'Authorization' => 'Bearer ' . $this->options['pixelfed_access_token'], 'Content-Type' => 'multipart/form-data; boundary=' . $boundary, ), 'data_format' => 'body', 'body' => $body, 'timeout' => 20, ) ); if ( is_wp_error( $response ) ) { // An error occurred. error_log( print_r( $response, true ) ); // phpcs:ignore WordPress.PHP.DevelopmentFunctions return; } // Decode JSON, suppressing possible formatting errors. $media = @json_decode( $response['body'] ); if ( ! empty( $media->id ) ) { return $media->id; } // Provided debugging's enabled, let's store the (somehow faulty) // response. error_log( print_r( $response, true ) ); // phpcs:ignore WordPress.PHP.DevelopmentFunctions } /** * Returns the file path of the first image inside a post's content. * * @since 0.6.0 * * @param int $post_id Post ID. * * @return string|null File path, or nothing on failure. */ public function find_first_image( $post_id ) { $post = get_post( $post_id ); // Assumes `src` value is wrapped in quotes. This will almost always be // the case. preg_match_all( '~~i', $post->post_content, $matches ); if ( empty( $matches[1] ) ) { error_log( "[Share on Pixelfed] Couldn't find a valid `` tag." ); return; } foreach ( $matches[1] as $match ) { // Convert URL back to attachment ID. $image_id = attachment_url_to_postid( $match ); if ( 0 === $image_id ) { // Unknown to WordPress. continue; } // Then, grab the "large" image. $image = wp_get_attachment_image_src( $image_id, apply_filters( 'share_on_pixelfed_image_size', 'large', $image_id ) ); $uploads = wp_upload_dir(); if ( ! empty( $image[0] ) && 0 === strpos( $image[0], $uploads['baseurl'] ) ) { // Found a "large" thumbnail that lives on our own site (and not, // e.g., a CDN). $url = $image[0]; } else { // Get the original image instead. $url = wp_get_attachment_url( $image_id ); // Original image URL. } // Convert URL to file path. $file_path = str_replace( $uploads['baseurl'], $uploads['basedir'], $url ); return $file_path; } } /** * Checks whether a post's content contains images. * * External images are ignored. * * @since 0.6.0 * * @param WP_Post $post Post object. * * @return bool If the post content contains images. */ private function has_images( $post ) { preg_match_all( '~~i', $post->post_content, $matches ); if ( empty( $matches[1] ) ) { // No images here. return false; } foreach ( $matches[1] as $match ) { // Convert URL back to attachment ID. $image_id = attachment_url_to_postid( $match ); if ( 0 !== $image_id ) { // Image exists in WordPress media library. return true; } } return false; } /** * Deletes a post's Pixelfed URL. * * Should only ever be called through AJAX. * * @since 0.5.1 */ public function unlink_url() { if ( ! isset( $_POST['share_on_pixelfed_nonce'] ) || ! wp_verify_nonce( sanitize_key( $_POST['share_on_pixelfed_nonce'] ), basename( __FILE__ ) ) ) { status_header( 400 ); esc_html_e( 'Missing or invalid nonce.', 'share-on-pixelfed' ); wp_die(); } if ( ! isset( $_POST['post_id'] ) || ! ctype_digit( $_POST['post_id'] ) ) { // phpcs:ignore WordPress.Security.ValidatedSanitizedInput.MissingUnslash,WordPress.Security.ValidatedSanitizedInput.InputNotSanitized status_header( 400 ); esc_html_e( 'Missing or incorrect post ID.', 'share-on-pixelfed' ); wp_die(); } if ( ! current_user_can( 'edit_post', intval( $_POST['post_id'] ) ) ) { status_header( 400 ); esc_html_e( 'Insufficient rights.', 'share-on-pixelfed' ); wp_die(); } // Have WordPress forget the Pixelfed URL. if ( '' !== get_post_meta( intval( $_POST['post_id'] ), '_share_on_pixelfed_url', true ) ) { delete_post_meta( intval( $_POST['post_id'] ), '_share_on_pixelfed_url' ); } wp_die(); } /** * Adds admin scripts and styles. * * @since 0.5.1 * * @param string $hook_suffix Current WP Admin page. */ public function enqueue_scripts( $hook_suffix ) { if ( 'post-new.php' !== $hook_suffix && 'post.php' !== $hook_suffix ) { // Not an "Edit Post" screen. return; } global $post; if ( empty( $post ) ) { // Can't do much without a `$post` object. return; } if ( empty( $this->options['post_types'] ) ) { return; } if ( ! in_array( $post->post_type, $this->options['post_types'], true ) ) { // Unsupported post type. return; } // Enqueue CSS and JS. wp_enqueue_style( 'share-on-pixelfed', plugins_url( '/assets/share-on-pixelfed.css', dirname( __FILE__ ) ), array(), '0.5.1' ); wp_enqueue_script( 'share-on-pixelfed', plugins_url( '/assets/share-on-pixelfed.js', dirname( __FILE__ ) ), array( 'jquery' ), '0.5.1', false ); wp_localize_script( 'share-on-pixelfed', 'share_on_pixelfed_obj', array( 'message' => esc_attr__( 'Forget this URL?', 'share-on-pixelfed' ), // Confirmation message. 'post_id' => $post->ID, // Pass current post ID to JS. ) ); } }