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-rw-r--r--src/guid/ntapi_tt_guid.c20
1 files changed, 16 insertions, 4 deletions
diff --git a/src/guid/ntapi_tt_guid.c b/src/guid/ntapi_tt_guid.c
index 52eb5af..69a5926 100644
--- a/src/guid/ntapi_tt_guid.c
+++ b/src/guid/ntapi_tt_guid.c
@@ -107,13 +107,25 @@ int32_t __fastcall __ntapi_tt_string_to_guid_utf16(
wchar16_t * wch;
uint16_t key;
- if ((guid_str->lbrace != '{')
- || (guid_str->rbrace != '}')
- || (guid_str->dash1 != '-')
+ /* outer braces / outer underscores / outer dashes */
+ if ((guid_str->lbrace == '{') && (guid_str->rbrace == '}'))
+ (void)0;
+
+ else if ((guid_str->lbrace == '_') && (guid_str->rbrace == '_'))
+ (void)0;
+
+ else if ((guid_str->lbrace == '-') && (guid_str->rbrace == '-'))
+ (void)0;
+
+ else
+ return NT_STATUS_INVALID_PARAMETER;
+
+ /* inner dashes */
+ if ((guid_str->dash1 != '-')
|| (guid_str->dash2 != '-')
|| (guid_str->dash3 != '-')
|| (guid_str->dash4 != '-'))
- return NT_STATUS_INVALID_PARAMETER;
+ return NT_STATUS_INVALID_PARAMETER;
wch = &(guid_str->group5[0]);