From 5a2a47e2999b7de465b81cc0298d59bff078d949 Mon Sep 17 00:00:00 2001
From: David Wang
Date: Wed, 25 Oct 2017 17:02:09 -0700
Subject: Allow restores that start in Restore mode. Allow specification of
 custom APTickets.

---
 src/restore.c | 89 ++++++++++++++++++++++++++++++++++++++++++++---------------
 1 file changed, 67 insertions(+), 22 deletions(-)

(limited to 'src/restore.c')

diff --git a/src/restore.c b/src/restore.c
index fea57fb..7a4e4fb 100644
--- a/src/restore.c
+++ b/src/restore.c
@@ -297,6 +297,46 @@ irecv_device_t restore_get_irecv_device(struct idevicerestore_client_t* client)
 	return irecv_device;
 }
 
+int restore_is_image4_supported(struct idevicerestore_client_t* client)
+{
+	int result = 0;
+	plist_t hwinfo = NULL;
+	idevice_t device = NULL;
+	restored_client_t restore = NULL;
+	restored_error_t restore_error = RESTORE_E_SUCCESS;
+
+	if (idevice_new(&device, client->udid) != IDEVICE_E_SUCCESS) {
+		error("ERROR: Could not connect to device %s\n", client->udid);
+		return -1;
+	}
+
+	restore_error = restored_client_new(device, &restore, "idevicerestore");
+	if (restore_error != RESTORE_E_SUCCESS) {
+		idevice_free(device);
+		return -1;
+	}
+
+	if (restored_query_type(restore, NULL, NULL) != RESTORE_E_SUCCESS) {
+		restored_client_free(restore);
+		idevice_free(device);
+		return -1;
+	}
+
+	restore_error = restored_query_value(restore, "HardwareInfo", &hwinfo);
+	if (restore_error == RESTORE_E_SUCCESS) {
+		uint8_t b = 0;
+		plist_t node = plist_dict_get_item(hwinfo, "SupportsImage4");
+		if (node && plist_get_node_type(node) == PLIST_BOOLEAN) {
+			plist_get_bool_val(node, &b);
+			result = b;
+		}
+	}
+	restored_client_free(restore);
+	idevice_free(device);
+
+	return result;
+}
+
 int restore_reboot(struct idevicerestore_client_t* client)
 {
 	if(client->restore == NULL) {
@@ -811,46 +851,51 @@ int restore_send_root_ticket(restored_client_t restore, struct idevicerestore_cl
 {
 	restored_error_t restore_error;
 	plist_t dict;
-	unsigned char* data = NULL;
-	unsigned int len = 0;
 
 	info("About to send RootTicket...\n");
 
-	if (!client->tss && !(client->flags & FLAG_CUSTOM)) {
-		error("ERROR: Cannot send RootTicket without TSS\n");
-		return -1;
-	}
+	if (client->root_ticket) {
+		dict = plist_new_dict();
+		plist_dict_set_item(dict, "RootTicketData", plist_new_data((char*)client->root_ticket, client->root_ticket_len));
+	} else {
+		unsigned char* data = NULL;
+		unsigned int len = 0;
 
-	if (client->image4supported) {
-		if (tss_response_get_ap_img4_ticket(client->tss, &data, &len) < 0) {
-			error("ERROR: Unable to get ApImg4Ticket from TSS\n");
+		if (!client->tss && !(client->flags & FLAG_CUSTOM)) {
+			error("ERROR: Cannot send RootTicket without TSS\n");
 			return -1;
 		}
-	} else {
-		if (!(client->flags & FLAG_CUSTOM) && (tss_response_get_ap_ticket(client->tss, &data, &len) < 0)) {
-			error("ERROR: Unable to get ticket from TSS\n");
-			return -1;
+
+		if (client->image4supported) {
+			if (tss_response_get_ap_img4_ticket(client->tss, &data, &len) < 0) {
+				error("ERROR: Unable to get ApImg4Ticket from TSS\n");
+				return -1;
+			}
+		} else {
+			if (!(client->flags & FLAG_CUSTOM) && (tss_response_get_ap_ticket(client->tss, &data, &len) < 0)) {
+				error("ERROR: Unable to get ticket from TSS\n");
+				return -1;
+			}
 		}
-	}
 
-	dict = plist_new_dict();
-	if (data && (len > 0)) {
-		plist_dict_set_item(dict, "RootTicketData", plist_new_data((char*)data, len));
-	} else {
-		info("NOTE: not sending RootTicketData (no data present)\n");
+		dict = plist_new_dict();
+		if (data && (len > 0)) {
+			plist_dict_set_item(dict, "RootTicketData", plist_new_data((char*)data, len));
+		} else {
+			info("NOTE: not sending RootTicketData (no data present)\n");
+		}
+		free(data);
 	}
 
 	info("Sending RootTicket now...\n");
 	restore_error = restored_send(restore, dict);
+	plist_free(dict);
 	if (restore_error != RESTORE_E_SUCCESS) {
 		error("ERROR: Unable to send RootTicket (%d)\n", restore_error);
-		plist_free(dict);
 		return -1;
 	}
 
 	info("Done sending RootTicket\n");
-	plist_free(dict);
-	free(data);
 	return 0;
 }
 
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