Lock settings based on constants

CHANGELOG.md

@@ -14,6 +14,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Changed
 
 * Outbox items only get sent to followers when there are any.
+* Restrict modifications to settings if they are predefined as constants.
 
 ### Fixed
 

includes/class-activitypub.php

@@ -48,6 +48,8 @@ public static function init() {
 
 		\add_action( 'updated_postmeta', array( self::class, 'updated_postmeta' ), 10, 4 );
 		\add_action( 'added_post_meta', array( self::class, 'updated_postmeta' ), 10, 4 );
+		\add_filter( 'pre_option_activitypub_actor_mode', array( self::class, 'pre_get_option' ) );
+
 		\add_action( 'init', array( self::class, 'register_user_meta' ), 11 );
 
 		// Register several post_types.
@@ -366,6 +368,29 @@ public static function pre_get_avatar_data( $args, $id_or_email ) {
 		return $args;
 	}
 
+	/**
+	 * Pre-get option filter for the Actor-Mode.
+	 *
+	 * @param string|false $pre The pre-get option value.
+	 *
+	 * @return string|false The actor mode or false if it should not be filtered.
+	 */
+	public static function pre_get_option( $pre ) {
+		if ( \defined( 'ACTIVITYPUB_SINGLE_USER_MODE' ) && ACTIVITYPUB_SINGLE_USER_MODE ) {
+			return ACTIVITYPUB_BLOG_MODE;
+		}
+
+		if ( \defined( 'ACTIVITYPUB_DISABLE_USER' ) && ACTIVITYPUB_DISABLE_USER ) {
+			return ACTIVITYPUB_BLOG_MODE;
+		}
+
+		if ( \defined( 'ACTIVITYPUB_DISABLE_BLOG_USER' ) && ACTIVITYPUB_DISABLE_BLOG_USER ) {
+			return ACTIVITYPUB_ACTOR_MODE;
+		}
+
+		return $pre;
+	}
+
 	/**
 	 * Function to retrieve Avatar URL if stored in meta.
 	 *

includes/wp-admin/class-settings-fields.php

@@ -207,11 +207,21 @@ public static function render_notifications_section() {
 	 * Render actor mode field.
 	 */
 	public static function render_actor_mode_field() {
-		$value = get_option( 'activitypub_actor_mode', ACTIVITYPUB_ACTOR_MODE );
-		?>
+		$value         = get_option( 'activitypub_actor_mode', ACTIVITYPUB_ACTOR_MODE );
+		$disabled      = ( \defined( 'ACTIVITYPUB_SINGLE_USER_MODE' ) && ACTIVITYPUB_SINGLE_USER_MODE ) ||
+						( \defined( 'ACTIVITYPUB_DISABLE_USER' ) && ACTIVITYPUB_DISABLE_USER ) ||
+						( \defined( 'ACTIVITYPUB_DISABLE_BLOG_USER' ) && ACTIVITYPUB_DISABLE_BLOG_USER );
+		$disable_input = $disabled ? 'disabled' : '';
+
+		if ( $disabled ) :
+			?>
+		<p class="description">
+			<strong><?php esc_html_e( '⚠ This setting is defined through server configuration by your blog&#8217;s administrator and cannot be changed. Please contact them if you need different settings.', 'activitypub' ); ?></strong>
+		</p>
+		<?php endif; ?>
 		<p>
 			<label>
-				<input type="radio" name="activitypub_actor_mode" value="<?php echo esc_attr( ACTIVITYPUB_ACTOR_MODE ); ?>" <?php checked( ACTIVITYPUB_ACTOR_MODE, $value ); ?> />
+				<input type="radio" name="activitypub_actor_mode" value="<?php echo esc_attr( ACTIVITYPUB_ACTOR_MODE ); ?>" <?php checked( ACTIVITYPUB_ACTOR_MODE, $value ); ?> <?php echo esc_attr( $disable_input ); ?> />
 				<strong><?php esc_html_e( 'Author Profiles Only', 'activitypub' ); ?></strong>
 			</label>
 		</p>
@@ -233,7 +243,7 @@ public static function render_actor_mode_field() {
 		</p>
 		<p>
 			<label>
-				<input type="radio" name="activitypub_actor_mode" value="<?php echo esc_attr( ACTIVITYPUB_BLOG_MODE ); ?>" <?php checked( ACTIVITYPUB_BLOG_MODE, $value ); ?> />
+				<input type="radio" name="activitypub_actor_mode" value="<?php echo esc_attr( ACTIVITYPUB_BLOG_MODE ); ?>" <?php checked( ACTIVITYPUB_BLOG_MODE, $value ); ?> <?php echo esc_attr( $disable_input ); ?> />
 				<strong><?php esc_html_e( 'Blog profile only', 'activitypub' ); ?></strong>
 			</label>
 		</p>
@@ -242,7 +252,7 @@ public static function render_actor_mode_field() {
 		</p>
 		<p>
 			<label>
-				<input type="radio" name="activitypub_actor_mode" value="<?php echo esc_attr( ACTIVITYPUB_ACTOR_AND_BLOG_MODE ); ?>" <?php checked( ACTIVITYPUB_ACTOR_AND_BLOG_MODE, $value ); ?> />
+				<input type="radio" name="activitypub_actor_mode" value="<?php echo esc_attr( ACTIVITYPUB_ACTOR_AND_BLOG_MODE ); ?>" <?php checked( ACTIVITYPUB_ACTOR_AND_BLOG_MODE, $value ); ?> <?php echo esc_attr( $disable_input ); ?> />
 				<strong><?php esc_html_e( 'Both author and blog profiles', 'activitypub' ); ?></strong>
 			</label>
 		</p>

readme.txt

@@ -133,6 +133,7 @@ For reasons of data protection, it is not possible to see the followers of other
 
 * Added: Documentation for migrating from a Mastodon instance to WordPress.
 * Changed: Outbox items only get sent to followers when there are any.
+* Changed: Restrict modifications to settings if they are predefined as constants.
 * Fixed: Updates to certain user meta fields did not trigger an Update activity.
 * Fixed: When viewing Reply Contexts, we'll now attribute the post to the blog user when the post author is disabled.
 * Fixed: Properly re-added support for `Update` and `Delete` `Announce`ments.