Adding upstream version 6.4.3+dfsg1.upstream/6.4.3+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 293 insertions, 0 deletions

diff --git a/wp-includes/rest-api/class-wp-rest-response.php b/wp-includes/rest-api/class-wp-rest-response.php
new file mode 100644
index 0000000..c6ea11b
--- /dev/null
+++ b/wp-includes/rest-api/class-wp-rest-response.php
@@ -0,0 +1,293 @@
+<?php
+/**
+ * REST API: WP_REST_Response class
+ *
+ * @package WordPress
+ * @subpackage REST_API
+ * @since 4.4.0
+ */
+
+/**
+ * Core class used to implement a REST response object.
+ *
+ * @since 4.4.0
+ *
+ * @see WP_HTTP_Response
+ */
+class WP_REST_Response extends WP_HTTP_Response {
+
+	/**
+	 * Links related to the response.
+	 *
+	 * @since 4.4.0
+	 * @var array
+	 */
+	protected $links = array();
+
+	/**
+	 * The route that was to create the response.
+	 *
+	 * @since 4.4.0
+	 * @var string
+	 */
+	protected $matched_route = '';
+
+	/**
+	 * The handler that was used to create the response.
+	 *
+	 * @since 4.4.0
+	 * @var null|array
+	 */
+	protected $matched_handler = null;
+
+	/**
+	 * Adds a link to the response.
+	 *
+	 * @internal The $rel parameter is first, as this looks nicer when sending multiple.
+	 *
+	 * @since 4.4.0
+	 *
+	 * @link https://tools.ietf.org/html/rfc5988
+	 * @link https://www.iana.org/assignments/link-relations/link-relations.xml
+	 *
+	 * @param string $rel        Link relation. Either an IANA registered type,
+	 *                           or an absolute URL.
+	 * @param string $href       Target URI for the link.
+	 * @param array  $attributes Optional. Link parameters to send along with the URL. Default empty array.
+	 */
+	public function add_link( $rel, $href, $attributes = array() ) {
+		if ( empty( $this->links[ $rel ] ) ) {
+			$this->links[ $rel ] = array();
+		}
+
+		if ( isset( $attributes['href'] ) ) {
+			// Remove the href attribute, as it's used for the main URL.
+			unset( $attributes['href'] );
+		}
+
+		$this->links[ $rel ][] = array(
+			'href'       => $href,
+			'attributes' => $attributes,
+		);
+	}
+
+	/**
+	 * Removes a link from the response.
+	 *
+	 * @since 4.4.0
+	 *
+	 * @param string $rel  Link relation. Either an IANA registered type, or an absolute URL.
+	 * @param string $href Optional. Only remove links for the relation matching the given href.
+	 *                     Default null.
+	 */
+	public function remove_link( $rel, $href = null ) {
+		if ( ! isset( $this->links[ $rel ] ) ) {
+			return;
+		}
+
+		if ( $href ) {
+			$this->links[ $rel ] = wp_list_filter( $this->links[ $rel ], array( 'href' => $href ), 'NOT' );
+		} else {
+			$this->links[ $rel ] = array();
+		}
+
+		if ( ! $this->links[ $rel ] ) {
+			unset( $this->links[ $rel ] );
+		}
+	}
+
+	/**
+	 * Adds multiple links to the response.
+	 *
+	 * Link data should be an associative array with link relation as the key.
+	 * The value can either be an associative array of link attributes
+	 * (including `href` with the URL for the response), or a list of these
+	 * associative arrays.
+	 *
+	 * @since 4.4.0
+	 *
+	 * @param array $links Map of link relation to list of links.
+	 */
+	public function add_links( $links ) {
+		foreach ( $links as $rel => $set ) {
+			// If it's a single link, wrap with an array for consistent handling.
+			if ( isset( $set['href'] ) ) {
+				$set = array( $set );
+			}
+
+			foreach ( $set as $attributes ) {
+				$this->add_link( $rel, $attributes['href'], $attributes );
+			}
+		}
+	}
+
+	/**
+	 * Retrieves links for the response.
+	 *
+	 * @since 4.4.0
+	 *
+	 * @return array List of links.
+	 */
+	public function get_links() {
+		return $this->links;
+	}
+
+	/**
+	 * Sets a single link header.
+	 *
+	 * @internal The $rel parameter is first, as this looks nicer when sending multiple.
+	 *
+	 * @since 4.4.0
+	 *
+	 * @link https://tools.ietf.org/html/rfc5988
+	 * @link https://www.iana.org/assignments/link-relations/link-relations.xml
+	 *
+	 * @param string $rel   Link relation. Either an IANA registered type, or an absolute URL.
+	 * @param string $link  Target IRI for the link.
+	 * @param array  $other Optional. Other parameters to send, as an associative array.
+	 *                      Default empty array.
+	 */
+	public function link_header( $rel, $link, $other = array() ) {
+		$header = '<' . $link . '>; rel="' . $rel . '"';
+
+		foreach ( $other as $key => $value ) {
+			if ( 'title' === $key ) {
+				$value = '"' . $value . '"';
+			}
+
+			$header .= '; ' . $key . '=' . $value;
+		}
+		$this->header( 'Link', $header, false );
+	}
+
+	/**
+	 * Retrieves the route that was used.
+	 *
+	 * @since 4.4.0
+	 *
+	 * @return string The matched route.
+	 */
+	public function get_matched_route() {
+		return $this->matched_route;
+	}
+
+	/**
+	 * Sets the route (regex for path) that caused the response.
+	 *
+	 * @since 4.4.0
+	 *
+	 * @param string $route Route name.
+	 */
+	public function set_matched_route( $route ) {
+		$this->matched_route = $route;
+	}
+
+	/**
+	 * Retrieves the handler that was used to generate the response.
+	 *
+	 * @since 4.4.0
+	 *
+	 * @return null|array The handler that was used to create the response.
+	 */
+	public function get_matched_handler() {
+		return $this->matched_handler;
+	}
+
+	/**
+	 * Sets the handler that was responsible for generating the response.
+	 *
+	 * @since 4.4.0
+	 *
+	 * @param array $handler The matched handler.
+	 */
+	public function set_matched_handler( $handler ) {
+		$this->matched_handler = $handler;
+	}
+
+	/**
+	 * Checks if the response is an error, i.e. >= 400 response code.
+	 *
+	 * @since 4.4.0
+	 *
+	 * @return bool Whether the response is an error.
+	 */
+	public function is_error() {
+		return $this->get_status() >= 400;
+	}
+
+	/**
+	 * Retrieves a WP_Error object from the response.
+	 *
+	 * @since 4.4.0
+	 *
+	 * @return WP_Error|null WP_Error or null on not an errored response.
+	 */
+	public function as_error() {
+		if ( ! $this->is_error() ) {
+			return null;
+		}
+
+		$error = new WP_Error();
+
+		if ( is_array( $this->get_data() ) ) {
+			$data = $this->get_data();
+			$error->add( $data['code'], $data['message'], $data['data'] );
+
+			if ( ! empty( $data['additional_errors'] ) ) {
+				foreach ( $data['additional_errors'] as $err ) {
+					$error->add( $err['code'], $err['message'], $err['data'] );
+				}
+			}
+		} else {
+			$error->add( $this->get_status(), '', array( 'status' => $this->get_status() ) );
+		}
+
+		return $error;
+	}
+
+	/**
+	 * Retrieves the CURIEs (compact URIs) used for relations.
+	 *
+	 * @since 4.5.0
+	 *
+	 * @return array Compact URIs.
+	 */
+	public function get_curies() {
+		$curies = array(
+			array(
+				'name'      => 'wp',
+				'href'      => 'https://api.w.org/{rel}',
+				'templated' => true,
+			),
+		);
+
+		/**
+		 * Filters extra CURIEs available on REST API responses.
+		 *
+		 * CURIEs allow a shortened version of URI relations. This allows a more
+		 * usable form for custom relations than using the full URI. These work
+		 * similarly to how XML namespaces work.
+		 *
+		 * Registered CURIES need to specify a name and URI template. This will
+		 * automatically transform URI relations into their shortened version.
+		 * The shortened relation follows the format `{name}:{rel}`. `{rel}` in
+		 * the URI template will be replaced with the `{rel}` part of the
+		 * shortened relation.
+		 *
+		 * For example, a CURIE with name `example` and URI template
+		 * `http://w.org/{rel}` would transform a `http://w.org/term` relation
+		 * into `example:term`.
+		 *
+		 * Well-behaved clients should expand and normalize these back to their
+		 * full URI relation, however some naive clients may not resolve these
+		 * correctly, so adding new CURIEs may break backward compatibility.
+		 *
+		 * @since 4.5.0
+		 *
+		 * @param array $additional Additional CURIEs to register with the REST API.
+		 */
+		$additional = apply_filters( 'rest_response_link_curies', array() );
+
+		return array_merge( $curies, $additional );
+	}
+}