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| author |  Nikias Bassen | 2022-10-04 14:36:57 +0200 |
|---|---|---|
| committer | Nikias Bassen | 2022-10-04 14:36:57 +0200 |
| commit | 5debcee5a74550c28da735bb1cfc5b4c8f2614a9 (patch) | |
| tree | 7afdb56a63bb962e90945b2ecb22d44f46140b4e | |
| parent | ef7cf8eb545d9ed3fb1f351376dec71608d0127b (diff) | |
| download | libimobiledevice-5debcee5a74550c28da735bb1cfc5b4c8f2614a9.tar.gz libimobiledevice-5debcee5a74550c28da735bb1cfc5b4c8f2614a9.tar.bz2 | |
mobilebackup: Fix version check to allow operability with really old iOS versions
| -rw-r--r-- | src/mobilebackup.c | 20 |
1 files 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); |