Ticket #46615: 46615.diff

src/wp-admin/includes/class-core-upgrader.php

@@ -122 +122 @@
                 }
 
                 $download = $this->download_package( $current->packages->$to_download );
+
+                // Allow for signature soft-fail.
+                // WARNING: This may be removed in the future.
+                if ( is_wp_error( $download ) && $download->get_error_data( 'softfail-filename' ) ) {
+                        // Outout the failure error as a normal feedback, and not as an error:
+                        apply_filters( 'update_feedback', $download->get_error_message() );
+
+                        // Report this failure back to WordPress.org for debugging purposes.
+                        wp_version_check(
+                                array(
+                                        'signature_failure_code' => $download->get_error_code(),
+                                        'signature_failure_data' => $download->get_error_data(),
+                                )
+                        );
+
+                        // Pretend this error didn't happen.
+                        $download = $download->get_error_data( 'softfail-filename' );
+                }
+
                 if ( is_wp_error( $download ) ) {
                         WP_Upgrader::release_lock( 'core_updater' );
                         return $download;