From 45b00b6faea567783c5f3e0a74b48cb98d34ef53 Mon Sep 17 00:00:00 2001
From: chatlanin <zimin@chatlanin.com.ru>
Date: Thu, 10 Nov 2022 11:16:43 +0300
Subject: [PATCH] add validate uuid

---
 src/security/generate_uuid.hpp | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/security/generate_uuid.hpp b/src/security/generate_uuid.hpp
index 1204d0a..50c90fd 100644
--- a/src/security/generate_uuid.hpp
+++ b/src/security/generate_uuid.hpp
@@ -11,11 +11,17 @@ namespace hack::security
     std::string uuid;
     uuid_t uuid_obj;
     uuid_generate_time_safe(uuid_obj);
-    char uuid_ch[37]; 
+    char uuid_ch[UUID_STR_LEN]; 
     uuid_unparse_lower(uuid_obj, uuid_ch);
     std::stringstream ss;
     ss << uuid_ch;
     ss >> uuid;
     return uuid;
   }
+
+  inline bool validate_uuid(const std::string& s)
+  {
+    static const std::regex e("^[0-9a-f]{8}-[0-9a-f]{4}-[0-5][0-9a-f]{3}-[089ab][0-9a-f]{3}-[0-9a-f]{12}$", std::regex_constants::icase);
+    return std::regex_match(s, e);
+  }
 }