Add support for FirmwareUpdaterPreflight message

This message seems mandatory on the new versions of MacOS (12+), but it
seems an empty response is what's expected.

1 files changed, 31 insertions, 0 deletions

diff --git a/src/restore.c b/src/restore.c
index 5423bb9..76194bf 100644
--- a/src/restore.c
+++ b/src/restore.c
@@ -2917,6 +2917,30 @@ static plist_t restore_get_cryptex1_firmware_data(restored_client_t restore, str
 	return response;
 }
 
+static int restore_send_firmware_updater_preflight(restored_client_t restore, struct idevicerestore_client_t* client, plist_t build_identity, plist_t message)
+{
+	plist_t dict = NULL;
+	int restore_error;
+
+	if (idevicerestore_debug) {
+		debug("DEBUG: %s: Got FirmwareUpdaterPreflight request:\n", __func__);
+		debug_plist(message);
+	}
+
+	dict = plist_new_dict();
+
+	info("Sending FirmwareResponsePreflight now...\n");
+	restore_error = restored_send(restore, dict);
+	plist_free(dict);
+	if (restore_error != RESTORE_E_SUCCESS) {
+		error("ERROR: Couldn't send FirmwareResponsePreflight data (%d)\n", restore_error);
+		return -1;
+	}
+
+	info("Done sending FirmwareUpdaterPreflight response\n");
+	return 0;
+}
+
 static int restore_send_firmware_updater_data(restored_client_t restore, struct idevicerestore_client_t* client, plist_t build_identity, plist_t message)
 {
 	plist_t arguments;
@@ -3758,6 +3782,13 @@ int restore_handle_data_request_msg(struct idevicerestore_client_t* client, idev
 			}
 		}
 
+		else if (!strcmp(type, "FirmwareUpdaterPreflight")) {
+			if(restore_send_firmware_updater_preflight(restore, client, build_identity, message) < 0) {
+				error("ERROR: Unable to send FirmwareUpdaterPreflight\n");
+				return -1;
+			}
+		}
+
 		else if (!strcmp(type, "FirmwareUpdaterData")) {
 			if(restore_send_firmware_updater_data(restore, client, build_identity, message) < 0) {
 				error("ERROR: Unable to send FirmwareUpdater data\n");