Ticket #47509: 45709.4.diff

src/wp-includes/user.php

@@ -3003 +3003 @@
                 }
         }
 
+        // get the list of reserved names.
+        $reserved_names = array_values( $user_prop_to_export );
+
+        /**
+         * Filter to extend the Users personal data for the privacy exporter.
+         *
+         * @since 5.4.0
+         *
+         * @param array    $additional_user_data {
+         *     An array of name-value pairs of additional user data items.  Default: the empty array.
+         *
+         *     @type string $name  The user-facing name of an item name-value pair, e.g. 'IP Address'.
+         *     @type string $value The user-facing value of an item data pair, e.g. '50.60.70.0'.
+         * }
+         * @param WP_User  $user           The user whose data is being exported.
+         * @param string[] $reserved_names An array of reserved names.  Any item in
+         *                                 `$additional_user_data` that uses one of these
+         *                                 for it's `name` will not be included in the export.
+         */
+        $_extra_data = apply_filters( 'wp_privacy_additional_user_data', array(), $user, $reserved_names );
+
+        if ( is_array( $_extra_data ) && ! empty( $_extra_data ) ) {
+                // remove items that use reserved names.
+                $extra_data  = array_filter(
+                        $_extra_data,
+                        function( $item ) use ( $reserved_names ) {
+                                return ! in_array( $item['name'], $reserved_names );
+                        }
+                );
+
+                if ( count( $extra_data ) !== count( $_extra_data ) ) {
+                        _doing_it_wrong(
+                                __FUNCTION__,
+                                sprintf(
+                                        /* translators: %s: wp_privacy_additional_user_data */
+                                        __( 'Filter %s returned items with reserved names.' ),
+                                        '<code>wp_privacy_additional_user_data</code>'
+                                ),
+                                '5.4.0'
+                        );
+                }
+
+                if ( ! empty( $extra_data ) ) {
+                        $user_data_to_export = array_merge( $user_data_to_export, $extra_data );
+                }
+        }
+
         $data_to_export[] = array(
                 'group_id'          => 'user',
                 'group_label'       => __( 'User' ),
-                'group_description' => __( 'User&#8217;s profile data.' ),
+                'group_description' => __( 'User&#8217;s meta data.' ),
                 'item_id'           => "user-{$user->ID}",
                 'data'              => $user_data_to_export,
         );

tests/phpunit/tests/user.php

@@ -1671 +1671 @@
                 // Number of exported user properties.
                 $this->assertSame( 11, count( $actual['data'][0]['data'] ) );
         }
+
+        /**
+         * Testing the `wp_privacy_additional_user_data` filter works.
+         *
+         * @since 5.4.0
+         *
+         * @ticket 47509
+         */
+        function test_filter_wp_privacy_additional_user_data() {
+                $test_user = new WP_User( self::$contrib_id );
+
+                // _doing_wrong() should be called because the filter callback
+                // adds a item with a 'name' that is the same as one generated by core.
+                $this->setExpectedIncorrectUsage( 'wp_user_personal_data_exporter' );
+                add_filter( 'wp_privacy_additional_user_data', array( $this, 'export_additional_user_data' ) );
+
+                $actual = wp_user_personal_data_exporter( $test_user->user_email );
+
+                remove_filter( 'wp_privacy_additional_user_data', array( $this, 'export_additional_user_data' ) );
+
+                $this->assertTrue( $actual['done'] );
+
+                // Number of exported users.
+                $this->assertSame( 1, count( $actual['data'] ) );
+
+                // Number of exported user properties (the 11 core properties,
+                // plus 1 additional from the filter).
+                $this->assertSame( 12, count( $actual['data'][0]['data'] ) );
+
+                // check that the duplicate 'name' => 'User ID' was stripped.
+                $this->assertSame(
+                        1,
+                        count(
+                                wp_list_filter(
+                                        $actual['data'][0]['data'],
+                                        array(
+                                                'name'  => 'User ID',
+                                        )
+                                )
+                        )
+                );
+
+                // check that the item added by the filter was retained.
+                $this->assertSame(
+                        1,
+                        count(
+                                wp_list_filter(
+                                        $actual['data'][0]['data'],
+                                        array(
+                                                'name'  => 'Test Additional Data Name',
+                                                'value' => 'Test Additional Data Value'
+                                        )
+                                )
+                        )
+                );
+        }
+
+        /**
+         * Filter callback to add additional data to the User Group on Export Requests.
+         *
+         * This callback should generate a `_doing_it_wrong()`.
+         *
+         * @since 5.4.0
+         *
+         * @ticket 47509
+         *
+         * @return array $additional_data The additional User data.
+         */
+        public function export_additional_user_data() {
+                $additional_data = array(
+                        // this item should be stripped out by wp_user_personal_data_exporter()
+                        // because it's 'name' duplicates one exported by core.
+                        array(
+                                'name'  => 'User ID',
+                                'value' => 'Some User ID',
+                        ),
+                        // this item should be retained and included in the export.
+                        array(
+                                'name'  => 'Test Additional Data Name',
+                                'value' => 'Test Additional Data Value',
+                        ),
+                );
+
+                return $additional_data;
+        }
 }