From 5debcee5a74550c28da735bb1cfc5b4c8f2614a9 Mon Sep 17 00:00:00 2001
From: Nikias Bassen
Date: Tue, 4 Oct 2022 14:36:57 +0200
Subject: mobilebackup: Fix version check to allow operability with really old
 iOS versions

---
 src/mobilebackup.c | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/src/mobilebackup.c b/src/mobilebackup.c
index aa29277..1505623 100644
--- a/src/mobilebackup.c
+++ b/src/mobilebackup.c
@@ -279,7 +279,15 @@ LIBIMOBILEDEVICE_API mobilebackup_error_t mobilebackup_request_backup(mobileback
 		char *str = NULL;
 		plist_get_string_val(node, &str);
 		if (str) {
-			if (strcmp(str, proto_version) != 0) {
+			int maj = 0;
+			int min = 0;
+			sscanf(str, "%u.%u", &maj, &min);
+			uint32_t this_ver = ((maj & 0xFF) << 8) | (min & 0xFF);
+			maj = 0;
+			min = 0;
+			sscanf(proto_version, "%u.%u", &maj, &min);
+			uint32_t proto_ver = ((maj & 0xFF) << 8) | (min & 0xFF);
+			if (this_ver > proto_ver) {
 				err = MOBILEBACKUP_E_BAD_VERSION;
 			}
 			free(str);
@@ -346,7 +354,15 @@ LIBIMOBILEDEVICE_API mobilebackup_error_t mobilebackup_request_restore(mobilebac
 		char *str = NULL;
 		plist_get_string_val(node, &str);
 		if (str) {
-			if (strcmp(str, proto_version) != 0) {
+			int maj = 0;
+			int min = 0;
+			sscanf(str, "%u.%u", &maj, &min);
+			uint32_t this_ver = ((maj & 0xFF) << 8) | (min & 0xFF);
+			maj = 0;
+			min = 0;
+			sscanf(proto_version, "%u.%u", &maj, &min);
+			uint32_t proto_ver = ((maj & 0xFF) << 8) | (min & 0xFF);
+			if (this_ver > proto_ver) {
 				err = MOBILEBACKUP_E_BAD_VERSION;
 			}
 			free(str);
-- 
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