updated plugin ActivityPub version 8.3.0

wp-content/plugins/activitypub/includes/functions-url.php

@@ -0,0 +1,167 @@
+<?php
+/**
+ * URL functions.
+ *
+ * Functions for URL manipulation.
+ *
+ * @package Activitypub
+ */
+
+namespace Activitypub;
+
+/**
+ * Get the REST URL relative to this plugin's namespace.
+ *
+ * @param string $path Optional. REST route path. Default ''.
+ *
+ * @return string REST URL relative to this plugin's namespace.
+ */
+function get_rest_url_by_path( $path = '' ) {
+	// We'll handle the leading slash.
+	$path            = ltrim( $path, '/' );
+	$namespaced_path = sprintf( '/%s/%s', ACTIVITYPUB_REST_NAMESPACE, $path );
+	return \get_rest_url( null, $namespaced_path );
+}
+
+/**
+ * Normalize a URL.
+ *
+ * @param string $url The URL.
+ *
+ * @return string The normalized URL.
+ */
+function normalize_url( $url ) {
+	// Remove ActivityPub-specific query parameters.
+	$url = \remove_query_arg( array( 'activitypub', 'preview' ), $url );
+	$url = \untrailingslashit( $url );
+	$url = \preg_replace( '/^https?:\/\/(www\.)?/', '', $url );
+
+	return $url;
+}
+
+/**
+ * Normalize a host.
+ *
+ * @param string $host The host.
+ *
+ * @return string The normalized host.
+ */
+function normalize_host( $host ) {
+	return \preg_replace( '/^www\./', '', $host );
+}
+
+/**
+ * Check if a URL is from the same domain as the site.
+ *
+ * @param string $url The URL to check.
+ *
+ * @return boolean True if the URL is from the same domain, false otherwise.
+ */
+function is_same_domain( $url ) {
+	$remote = \wp_parse_url( $url, PHP_URL_HOST );
+
+	if ( ! $remote ) {
+		return false;
+	}
+
+	$remote = normalize_host( $remote );
+	$self   = normalize_host( home_host() );
+
+	return $remote === $self;
+}
+
+/**
+ * Retrieves the Host for the current site where the front end is accessible.
+ *
+ * @return string The host for the current site.
+ */
+function home_host() {
+	return \wp_parse_url( \home_url(), PHP_URL_HOST );
+}
+
+/**
+ * Get the base URL for uploads.
+ *
+ * @return string The upload base URL.
+ */
+function get_upload_baseurl() {
+	/**
+	 * Early filter to allow plugins to set the upload base URL.
+	 *
+	 * @param string|false $maybe_upload_dir The upload base URL or false if not set.
+	 */
+	$maybe_upload_dir = apply_filters( 'pre_activitypub_get_upload_baseurl', false );
+	if ( false !== $maybe_upload_dir ) {
+		return $maybe_upload_dir;
+	}
+
+	$upload_dir = \wp_get_upload_dir();
+
+	/**
+	 * Filters the upload base URL.
+	 *
+	 * @param string $upload_dir The upload base URL. Default \wp_get_upload_dir()['baseurl']
+	 */
+	return apply_filters( 'activitypub_get_upload_baseurl', $upload_dir['baseurl'] );
+}
+
+/**
+ * Get the authority (scheme + host) from a URL.
+ *
+ * @param string $url The URL to parse.
+ *
+ * @return string|false The authority, or false on failure.
+ */
+function get_url_authority( $url ) {
+	$parsed = wp_parse_url( $url );
+
+	if ( ! $parsed || empty( $parsed['scheme'] ) || empty( $parsed['host'] ) ) {
+		return false;
+	}
+
+	return $parsed['scheme'] . '://' . $parsed['host'];
+}
+
+/**
+ * Infer a shortname from the Actor ID or URL. Used only for fallbacks,
+ * we will try to use what's supplied.
+ *
+ * @param string $uri The URI.
+ *
+ * @return string Hopefully the name of the Follower.
+ */
+function extract_name_from_uri( $uri ) {
+	$name = $uri;
+
+	if ( \filter_var( $name, FILTER_VALIDATE_URL ) ) {
+		$name = \rtrim( $name, '/' );
+		$path = \wp_parse_url( $name, PHP_URL_PATH );
+		if ( $path && '/' !== $path ) {
+			if ( \strpos( $name, '@' ) !== false ) {
+				// Expected: https://example.com/@user (default URL pattern).
+				$name = \preg_replace( '|^/@?|', '', $path );
+			} else {
+				// Expected: https://example.com/users/user (default ID pattern).
+				$parts = \explode( '/', $path );
+				$name  = \array_pop( $parts );
+			}
+		} else {
+			$name = \wp_parse_url( $name, PHP_URL_HOST );
+			$name = \str_replace( 'www.', '', $name );
+		}
+	} elseif (
+		\is_email( $name ) ||
+		\strpos( $name, 'acct' ) === 0 ||
+		\strpos( $name, '@' ) === 0
+	) {
+		// Expected: user@example.com or acct:user@example (WebFinger).
+		$name = \ltrim( $name, '@' );
+		if ( str_starts_with( $name, 'acct:' ) ) {
+			$name = \substr( $name, 5 );
+		}
+		$parts = \explode( '@', $name );
+		$name  = $parts[0];
+	}
+
+	return $name;
+}