755 lines
23 KiB
PHP
755 lines
23 KiB
PHP
<?php
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/**
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* REST API: WP_REST_Attachments_Controller class
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*
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* @package WordPress
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* @subpackage REST_API
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* @since 4.7.0
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*/
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/**
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* Core controller used to access attachments via the REST API.
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*
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* @since 4.7.0
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*
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* @see WP_REST_Posts_Controller
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*/
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class WP_REST_Attachments_Controller extends WP_REST_Posts_Controller {
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/**
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* Determines the allowed query_vars for a get_items() response and
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* prepares for WP_Query.
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*
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* @since 4.7.0
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* @access protected
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*
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* @param array $prepared_args Optional. Array of prepared arguments. Default empty array.
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* @param WP_REST_Request $request Optional. Request to prepare items for.
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* @return array Array of query arguments.
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*/
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protected function prepare_items_query( $prepared_args = array(), $request = null ) {
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$query_args = parent::prepare_items_query( $prepared_args, $request );
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if ( empty( $query_args['post_status'] ) ) {
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$query_args['post_status'] = 'inherit';
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}
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$media_types = $this->get_media_types();
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if ( ! empty( $request['media_type'] ) && isset( $media_types[ $request['media_type'] ] ) ) {
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$query_args['post_mime_type'] = $media_types[ $request['media_type'] ];
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}
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if ( ! empty( $request['mime_type'] ) ) {
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$parts = explode( '/', $request['mime_type'] );
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if ( isset( $media_types[ $parts[0] ] ) && in_array( $request['mime_type'], $media_types[ $parts[0] ], true ) ) {
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$query_args['post_mime_type'] = $request['mime_type'];
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}
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}
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// Filter query clauses to include filenames.
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if ( isset( $query_args['s'] ) ) {
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add_filter( 'posts_clauses', '_filter_query_attachment_filenames' );
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}
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return $query_args;
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}
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/**
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* Checks if a given request has access to create an attachment.
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*
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* @since 4.7.0
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* @access public
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*
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* @param WP_REST_Request $request Full details about the request.
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* @return WP_Error|true Boolean true if the attachment may be created, or a WP_Error if not.
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*/
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public function create_item_permissions_check( $request ) {
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$ret = parent::create_item_permissions_check( $request );
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if ( ! $ret || is_wp_error( $ret ) ) {
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return $ret;
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}
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if ( ! current_user_can( 'upload_files' ) ) {
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return new WP_Error( 'rest_cannot_create', __( 'Sorry, you are not allowed to upload media on this site.' ), array( 'status' => 400 ) );
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}
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// Attaching media to a post requires ability to edit said post.
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if ( ! empty( $request['post'] ) ) {
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$parent = get_post( (int) $request['post'] );
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$post_parent_type = get_post_type_object( $parent->post_type );
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if ( ! current_user_can( $post_parent_type->cap->edit_post, $request['post'] ) ) {
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return new WP_Error( 'rest_cannot_edit', __( 'Sorry, you are not allowed to upload media to this post.' ), array( 'status' => rest_authorization_required_code() ) );
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}
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}
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return true;
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}
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/**
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* Creates a single attachment.
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*
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* @since 4.7.0
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* @access public
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*
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* @param WP_REST_Request $request Full details about the request.
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* @return WP_Error|WP_REST_Response Response object on success, WP_Error object on failure.
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*/
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public function create_item( $request ) {
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if ( ! empty( $request['post'] ) && in_array( get_post_type( $request['post'] ), array( 'revision', 'attachment' ), true ) ) {
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return new WP_Error( 'rest_invalid_param', __( 'Invalid parent type.' ), array( 'status' => 400 ) );
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}
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// Get the file via $_FILES or raw data.
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$files = $request->get_file_params();
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$headers = $request->get_headers();
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if ( ! empty( $files ) ) {
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$file = $this->upload_from_file( $files, $headers );
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} else {
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$file = $this->upload_from_data( $request->get_body(), $headers );
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}
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if ( is_wp_error( $file ) ) {
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return $file;
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}
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$name = basename( $file['file'] );
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$name_parts = pathinfo( $name );
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$name = trim( substr( $name, 0, -(1 + strlen( $name_parts['extension'] ) ) ) );
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$url = $file['url'];
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$type = $file['type'];
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$file = $file['file'];
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// use image exif/iptc data for title and caption defaults if possible
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$image_meta = @wp_read_image_metadata( $file );
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if ( ! empty( $image_meta ) ) {
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if ( empty( $request['title'] ) && trim( $image_meta['title'] ) && ! is_numeric( sanitize_title( $image_meta['title'] ) ) ) {
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$request['title'] = $image_meta['title'];
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}
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if ( empty( $request['caption'] ) && trim( $image_meta['caption'] ) ) {
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$request['caption'] = $image_meta['caption'];
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}
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}
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$attachment = $this->prepare_item_for_database( $request );
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$attachment->file = $file;
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$attachment->post_mime_type = $type;
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$attachment->guid = $url;
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if ( empty( $attachment->post_title ) ) {
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$attachment->post_title = preg_replace( '/\.[^.]+$/', '', basename( $file ) );
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}
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$id = wp_insert_post( wp_slash( (array) $attachment ), true );
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if ( is_wp_error( $id ) ) {
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if ( 'db_update_error' === $id->get_error_code() ) {
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$id->add_data( array( 'status' => 500 ) );
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} else {
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$id->add_data( array( 'status' => 400 ) );
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}
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return $id;
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}
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$attachment = get_post( $id );
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/**
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* Fires after a single attachment is created or updated via the REST API.
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*
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* @since 4.7.0
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*
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* @param WP_Post $attachment Inserted or updated attachment
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* object.
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* @param WP_REST_Request $request The request sent to the API.
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* @param bool $creating True when creating an attachment, false when updating.
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*/
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do_action( 'rest_insert_attachment', $attachment, $request, true );
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// Include admin functions to get access to wp_generate_attachment_metadata().
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require_once ABSPATH . 'wp-admin/includes/admin.php';
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wp_update_attachment_metadata( $id, wp_generate_attachment_metadata( $id, $file ) );
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if ( isset( $request['alt_text'] ) ) {
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update_post_meta( $id, '_wp_attachment_image_alt', sanitize_text_field( $request['alt_text'] ) );
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}
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$fields_update = $this->update_additional_fields_for_object( $attachment, $request );
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if ( is_wp_error( $fields_update ) ) {
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return $fields_update;
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}
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$request->set_param( 'context', 'edit' );
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$response = $this->prepare_item_for_response( $attachment, $request );
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$response = rest_ensure_response( $response );
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$response->set_status( 201 );
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$response->header( 'Location', rest_url( sprintf( '%s/%s/%d', $this->namespace, $this->rest_base, $id ) ) );
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return $response;
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}
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/**
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* Updates a single attachment.
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*
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* @since 4.7.0
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* @access public
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*
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* @param WP_REST_Request $request Full details about the request.
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* @return WP_Error|WP_REST_Response Response object on success, WP_Error object on failure.
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*/
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public function update_item( $request ) {
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if ( ! empty( $request['post'] ) && in_array( get_post_type( $request['post'] ), array( 'revision', 'attachment' ), true ) ) {
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return new WP_Error( 'rest_invalid_param', __( 'Invalid parent type.' ), array( 'status' => 400 ) );
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}
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$response = parent::update_item( $request );
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if ( is_wp_error( $response ) ) {
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return $response;
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}
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$response = rest_ensure_response( $response );
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$data = $response->get_data();
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if ( isset( $request['alt_text'] ) ) {
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update_post_meta( $data['id'], '_wp_attachment_image_alt', $request['alt_text'] );
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}
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$attachment = get_post( $request['id'] );
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/** This action is documented in wp-includes/rest-api/endpoints/class-wp-rest-attachments-controller.php */
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do_action( 'rest_insert_attachment', $data, $request, false );
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$fields_update = $this->update_additional_fields_for_object( $attachment, $request );
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if ( is_wp_error( $fields_update ) ) {
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return $fields_update;
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}
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$request->set_param( 'context', 'edit' );
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$response = $this->prepare_item_for_response( $attachment, $request );
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$response = rest_ensure_response( $response );
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return $response;
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}
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/**
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* Prepares a single attachment for create or update.
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*
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* @since 4.7.0
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* @access public
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*
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* @param WP_REST_Request $request Request object.
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* @return WP_Error|stdClass $prepared_attachment Post object.
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*/
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protected function prepare_item_for_database( $request ) {
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$prepared_attachment = parent::prepare_item_for_database( $request );
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// Attachment caption (post_excerpt internally)
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if ( isset( $request['caption'] ) ) {
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if ( is_string( $request['caption'] ) ) {
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$prepared_attachment->post_excerpt = $request['caption'];
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} elseif ( isset( $request['caption']['raw'] ) ) {
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$prepared_attachment->post_excerpt = $request['caption']['raw'];
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}
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}
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// Attachment description (post_content internally)
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if ( isset( $request['description'] ) ) {
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if ( is_string( $request['description'] ) ) {
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$prepared_attachment->post_content = $request['description'];
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} elseif ( isset( $request['description']['raw'] ) ) {
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$prepared_attachment->post_content = $request['description']['raw'];
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}
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}
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if ( isset( $request['post'] ) ) {
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$prepared_attachment->post_parent = (int) $request['post'];
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}
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return $prepared_attachment;
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}
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/**
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* Prepares a single attachment output for response.
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*
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* @since 4.7.0
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* @access public
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*
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* @param WP_Post $post Attachment object.
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* @param WP_REST_Request $request Request object.
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* @return WP_REST_Response Response object.
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*/
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public function prepare_item_for_response( $post, $request ) {
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$response = parent::prepare_item_for_response( $post, $request );
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$data = $response->get_data();
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$data['description'] = array(
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'raw' => $post->post_content,
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/** This filter is documented in wp-includes/post-template.php */
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'rendered' => apply_filters( 'the_content', $post->post_content ),
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);
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/** This filter is documented in wp-includes/post-template.php */
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$caption = apply_filters( 'the_excerpt', apply_filters( 'get_the_excerpt', $post->post_excerpt, $post ) );
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$data['caption'] = array(
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'raw' => $post->post_excerpt,
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'rendered' => $caption,
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);
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$data['alt_text'] = get_post_meta( $post->ID, '_wp_attachment_image_alt', true );
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$data['media_type'] = wp_attachment_is_image( $post->ID ) ? 'image' : 'file';
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$data['mime_type'] = $post->post_mime_type;
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$data['media_details'] = wp_get_attachment_metadata( $post->ID );
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$data['post'] = ! empty( $post->post_parent ) ? (int) $post->post_parent : null;
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$data['source_url'] = wp_get_attachment_url( $post->ID );
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// Ensure empty details is an empty object.
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if ( empty( $data['media_details'] ) ) {
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$data['media_details'] = new stdClass;
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} elseif ( ! empty( $data['media_details']['sizes'] ) ) {
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foreach ( $data['media_details']['sizes'] as $size => &$size_data ) {
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if ( isset( $size_data['mime-type'] ) ) {
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$size_data['mime_type'] = $size_data['mime-type'];
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unset( $size_data['mime-type'] );
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}
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// Use the same method image_downsize() does.
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$image_src = wp_get_attachment_image_src( $post->ID, $size );
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if ( ! $image_src ) {
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continue;
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}
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$size_data['source_url'] = $image_src[0];
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}
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$full_src = wp_get_attachment_image_src( $post->ID, 'full' );
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if ( ! empty( $full_src ) ) {
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$data['media_details']['sizes']['full'] = array(
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'file' => wp_basename( $full_src[0] ),
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'width' => $full_src[1],
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'height' => $full_src[2],
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'mime_type' => $post->post_mime_type,
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'source_url' => $full_src[0],
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);
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}
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} else {
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$data['media_details']['sizes'] = new stdClass;
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}
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$context = ! empty( $request['context'] ) ? $request['context'] : 'view';
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$data = $this->filter_response_by_context( $data, $context );
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// Wrap the data in a response object.
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$response = rest_ensure_response( $data );
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$response->add_links( $this->prepare_links( $post ) );
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/**
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* Filters an attachment returned from the REST API.
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*
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* Allows modification of the attachment right before it is returned.
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*
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* @since 4.7.0
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*
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* @param WP_REST_Response $response The response object.
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* @param WP_Post $post The original attachment post.
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* @param WP_REST_Request $request Request used to generate the response.
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*/
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return apply_filters( 'rest_prepare_attachment', $response, $post, $request );
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}
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/**
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* Retrieves the attachment's schema, conforming to JSON Schema.
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*
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* @since 4.7.0
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* @access public
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*
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* @return array Item schema as an array.
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*/
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public function get_item_schema() {
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$schema = parent::get_item_schema();
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$schema['properties']['alt_text'] = array(
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'description' => __( 'Alternative text to display when attachment is not displayed.' ),
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'type' => 'string',
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'context' => array( 'view', 'edit', 'embed' ),
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'arg_options' => array(
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'sanitize_callback' => 'sanitize_text_field',
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),
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);
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$schema['properties']['caption'] = array(
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'description' => __( 'The attachment caption.' ),
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'type' => 'object',
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'context' => array( 'view', 'edit', 'embed' ),
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'arg_options' => array(
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'sanitize_callback' => null, // Note: sanitization implemented in self::prepare_item_for_database()
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),
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'properties' => array(
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'raw' => array(
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'description' => __( 'Caption for the attachment, as it exists in the database.' ),
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'type' => 'string',
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'context' => array( 'edit' ),
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),
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'rendered' => array(
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'description' => __( 'HTML caption for the attachment, transformed for display.' ),
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'type' => 'string',
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'context' => array( 'view', 'edit', 'embed' ),
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'readonly' => true,
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),
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),
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);
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$schema['properties']['description'] = array(
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'description' => __( 'The attachment description.' ),
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'type' => 'object',
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'context' => array( 'view', 'edit' ),
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'arg_options' => array(
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'sanitize_callback' => null, // Note: sanitization implemented in self::prepare_item_for_database()
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),
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'properties' => array(
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'raw' => array(
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'description' => __( 'Description for the object, as it exists in the database.' ),
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'type' => 'string',
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'context' => array( 'edit' ),
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),
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'rendered' => array(
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'description' => __( 'HTML description for the object, transformed for display.' ),
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'type' => 'string',
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'context' => array( 'view', 'edit' ),
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'readonly' => true,
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),
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),
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);
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$schema['properties']['media_type'] = array(
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'description' => __( 'Attachment type.' ),
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'type' => 'string',
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'enum' => array( 'image', 'file' ),
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'context' => array( 'view', 'edit', 'embed' ),
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'readonly' => true,
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);
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$schema['properties']['mime_type'] = array(
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'description' => __( 'The attachment MIME type.' ),
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'type' => 'string',
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'context' => array( 'view', 'edit', 'embed' ),
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'readonly' => true,
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);
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$schema['properties']['media_details'] = array(
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'description' => __( 'Details about the media file, specific to its type.' ),
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'type' => 'object',
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'context' => array( 'view', 'edit', 'embed' ),
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'readonly' => true,
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);
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$schema['properties']['post'] = array(
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'description' => __( 'The ID for the associated post of the attachment.' ),
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'type' => 'integer',
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'context' => array( 'view', 'edit' ),
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);
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$schema['properties']['source_url'] = array(
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'description' => __( 'URL to the original attachment file.' ),
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'type' => 'string',
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'format' => 'uri',
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'context' => array( 'view', 'edit', 'embed' ),
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'readonly' => true,
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);
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unset( $schema['properties']['password'] );
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return $schema;
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}
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/**
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* Handles an upload via raw POST data.
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*
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* @since 4.7.0
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* @access protected
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*
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* @param array $data Supplied file data.
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* @param array $headers HTTP headers from the request.
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* @return array|WP_Error Data from wp_handle_sideload().
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*/
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protected function upload_from_data( $data, $headers ) {
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if ( empty( $data ) ) {
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return new WP_Error( 'rest_upload_no_data', __( 'No data supplied.' ), array( 'status' => 400 ) );
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|
}
|
|
|
|
if ( empty( $headers['content_type'] ) ) {
|
|
return new WP_Error( 'rest_upload_no_content_type', __( 'No Content-Type supplied.' ), array( 'status' => 400 ) );
|
|
}
|
|
|
|
if ( empty( $headers['content_disposition'] ) ) {
|
|
return new WP_Error( 'rest_upload_no_content_disposition', __( 'No Content-Disposition supplied.' ), array( 'status' => 400 ) );
|
|
}
|
|
|
|
$filename = self::get_filename_from_disposition( $headers['content_disposition'] );
|
|
|
|
if ( empty( $filename ) ) {
|
|
return new WP_Error( 'rest_upload_invalid_disposition', __( 'Invalid Content-Disposition supplied. Content-Disposition needs to be formatted as `attachment; filename="image.png"` or similar.' ), array( 'status' => 400 ) );
|
|
}
|
|
|
|
if ( ! empty( $headers['content_md5'] ) ) {
|
|
$content_md5 = array_shift( $headers['content_md5'] );
|
|
$expected = trim( $content_md5 );
|
|
$actual = md5( $data );
|
|
|
|
if ( $expected !== $actual ) {
|
|
return new WP_Error( 'rest_upload_hash_mismatch', __( 'Content hash did not match expected.' ), array( 'status' => 412 ) );
|
|
}
|
|
}
|
|
|
|
// Get the content-type.
|
|
$type = array_shift( $headers['content_type'] );
|
|
|
|
/** Include admin functions to get access to wp_tempnam() and wp_handle_sideload() */
|
|
require_once ABSPATH . 'wp-admin/includes/admin.php';
|
|
|
|
// Save the file.
|
|
$tmpfname = wp_tempnam( $filename );
|
|
|
|
$fp = fopen( $tmpfname, 'w+' );
|
|
|
|
if ( ! $fp ) {
|
|
return new WP_Error( 'rest_upload_file_error', __( 'Could not open file handle.' ), array( 'status' => 500 ) );
|
|
}
|
|
|
|
fwrite( $fp, $data );
|
|
fclose( $fp );
|
|
|
|
// Now, sideload it in.
|
|
$file_data = array(
|
|
'error' => null,
|
|
'tmp_name' => $tmpfname,
|
|
'name' => $filename,
|
|
'type' => $type,
|
|
);
|
|
|
|
$overrides = array(
|
|
'test_form' => false,
|
|
);
|
|
|
|
$sideloaded = wp_handle_sideload( $file_data, $overrides );
|
|
|
|
if ( isset( $sideloaded['error'] ) ) {
|
|
@unlink( $tmpfname );
|
|
|
|
return new WP_Error( 'rest_upload_sideload_error', $sideloaded['error'], array( 'status' => 500 ) );
|
|
}
|
|
|
|
return $sideloaded;
|
|
}
|
|
|
|
/**
|
|
* Parses filename from a Content-Disposition header value.
|
|
*
|
|
* As per RFC6266:
|
|
*
|
|
* content-disposition = "Content-Disposition" ":"
|
|
* disposition-type *( ";" disposition-parm )
|
|
*
|
|
* disposition-type = "inline" | "attachment" | disp-ext-type
|
|
* ; case-insensitive
|
|
* disp-ext-type = token
|
|
*
|
|
* disposition-parm = filename-parm | disp-ext-parm
|
|
*
|
|
* filename-parm = "filename" "=" value
|
|
* | "filename*" "=" ext-value
|
|
*
|
|
* disp-ext-parm = token "=" value
|
|
* | ext-token "=" ext-value
|
|
* ext-token = <the characters in token, followed by "*">
|
|
*
|
|
* @since 4.7.0
|
|
* @access public
|
|
*
|
|
* @link http://tools.ietf.org/html/rfc2388
|
|
* @link http://tools.ietf.org/html/rfc6266
|
|
*
|
|
* @param string[] $disposition_header List of Content-Disposition header values.
|
|
* @return string|null Filename if available, or null if not found.
|
|
*/
|
|
public static function get_filename_from_disposition( $disposition_header ) {
|
|
// Get the filename.
|
|
$filename = null;
|
|
|
|
foreach ( $disposition_header as $value ) {
|
|
$value = trim( $value );
|
|
|
|
if ( strpos( $value, ';' ) === false ) {
|
|
continue;
|
|
}
|
|
|
|
list( $type, $attr_parts ) = explode( ';', $value, 2 );
|
|
|
|
$attr_parts = explode( ';', $attr_parts );
|
|
$attributes = array();
|
|
|
|
foreach ( $attr_parts as $part ) {
|
|
if ( strpos( $part, '=' ) === false ) {
|
|
continue;
|
|
}
|
|
|
|
list( $key, $value ) = explode( '=', $part, 2 );
|
|
|
|
$attributes[ trim( $key ) ] = trim( $value );
|
|
}
|
|
|
|
if ( empty( $attributes['filename'] ) ) {
|
|
continue;
|
|
}
|
|
|
|
$filename = trim( $attributes['filename'] );
|
|
|
|
// Unquote quoted filename, but after trimming.
|
|
if ( substr( $filename, 0, 1 ) === '"' && substr( $filename, -1, 1 ) === '"' ) {
|
|
$filename = substr( $filename, 1, -1 );
|
|
}
|
|
}
|
|
|
|
return $filename;
|
|
}
|
|
|
|
/**
|
|
* Retrieves the query params for collections of attachments.
|
|
*
|
|
* @since 4.7.0
|
|
* @access public
|
|
*
|
|
* @return array Query parameters for the attachment collection as an array.
|
|
*/
|
|
public function get_collection_params() {
|
|
$params = parent::get_collection_params();
|
|
$params['status']['default'] = 'inherit';
|
|
$params['status']['items']['enum'] = array( 'inherit', 'private', 'trash' );
|
|
$media_types = $this->get_media_types();
|
|
|
|
$params['media_type'] = array(
|
|
'default' => null,
|
|
'description' => __( 'Limit result set to attachments of a particular media type.' ),
|
|
'type' => 'string',
|
|
'enum' => array_keys( $media_types ),
|
|
);
|
|
|
|
$params['mime_type'] = array(
|
|
'default' => null,
|
|
'description' => __( 'Limit result set to attachments of a particular MIME type.' ),
|
|
'type' => 'string',
|
|
);
|
|
|
|
return $params;
|
|
}
|
|
|
|
/**
|
|
* Validates whether the user can query private statuses.
|
|
*
|
|
* @since 4.7.0
|
|
* @access public
|
|
*
|
|
* @param mixed $value Status value.
|
|
* @param WP_REST_Request $request Request object.
|
|
* @param string $parameter Additional parameter to pass for validation.
|
|
* @return WP_Error|bool True if the user may query, WP_Error if not.
|
|
*/
|
|
public function validate_user_can_query_private_statuses( $value, $request, $parameter ) {
|
|
if ( 'inherit' === $value ) {
|
|
return true;
|
|
}
|
|
|
|
return parent::validate_user_can_query_private_statuses( $value, $request, $parameter );
|
|
}
|
|
|
|
/**
|
|
* Handles an upload via multipart/form-data ($_FILES).
|
|
*
|
|
* @since 4.7.0
|
|
* @access protected
|
|
*
|
|
* @param array $files Data from the `$_FILES` superglobal.
|
|
* @param array $headers HTTP headers from the request.
|
|
* @return array|WP_Error Data from wp_handle_upload().
|
|
*/
|
|
protected function upload_from_file( $files, $headers ) {
|
|
if ( empty( $files ) ) {
|
|
return new WP_Error( 'rest_upload_no_data', __( 'No data supplied.' ), array( 'status' => 400 ) );
|
|
}
|
|
|
|
// Verify hash, if given.
|
|
if ( ! empty( $headers['content_md5'] ) ) {
|
|
$content_md5 = array_shift( $headers['content_md5'] );
|
|
$expected = trim( $content_md5 );
|
|
$actual = md5_file( $files['file']['tmp_name'] );
|
|
|
|
if ( $expected !== $actual ) {
|
|
return new WP_Error( 'rest_upload_hash_mismatch', __( 'Content hash did not match expected.' ), array( 'status' => 412 ) );
|
|
}
|
|
}
|
|
|
|
// Pass off to WP to handle the actual upload.
|
|
$overrides = array(
|
|
'test_form' => false,
|
|
);
|
|
|
|
// Bypasses is_uploaded_file() when running unit tests.
|
|
if ( defined( 'DIR_TESTDATA' ) && DIR_TESTDATA ) {
|
|
$overrides['action'] = 'wp_handle_mock_upload';
|
|
}
|
|
|
|
/** Include admin functions to get access to wp_handle_upload() */
|
|
require_once ABSPATH . 'wp-admin/includes/admin.php';
|
|
|
|
$file = wp_handle_upload( $files['file'], $overrides );
|
|
|
|
if ( isset( $file['error'] ) ) {
|
|
return new WP_Error( 'rest_upload_unknown_error', $file['error'], array( 'status' => 500 ) );
|
|
}
|
|
|
|
return $file;
|
|
}
|
|
|
|
/**
|
|
* Retrieves the supported media types.
|
|
*
|
|
* Media types are considered the MIME type category.
|
|
*
|
|
* @since 4.7.0
|
|
* @access protected
|
|
*
|
|
* @return array Array of supported media types.
|
|
*/
|
|
protected function get_media_types() {
|
|
$media_types = array();
|
|
|
|
foreach ( get_allowed_mime_types() as $mime_type ) {
|
|
$parts = explode( '/', $mime_type );
|
|
|
|
if ( ! isset( $media_types[ $parts[0] ] ) ) {
|
|
$media_types[ $parts[0] ] = array();
|
|
}
|
|
|
|
$media_types[ $parts[0] ][] = $mime_type;
|
|
}
|
|
|
|
return $media_types;
|
|
}
|
|
|
|
}
|