Add function to get GUTI from TMSI

src/amf-app/amf_app.cpp

@@ -204,7 +204,6 @@ long amf_app::generate_amf_ue_ngap_id() {
 //------------------------------------------------------------------------------
 bool amf_app::is_ran_amf_id_2_ue_context(const string& ue_context_key) const {
   std::shared_lock lock(m_ue_ctx_key);
-  // return bool{ue_ctx_key.count(ue_context_key) > 0};
   if (ue_ctx_key.count(ue_context_key) > 0) {
     if (ue_ctx_key.at(ue_context_key) != nullptr) {
       return true;

src/common/conversions.cpp

@@ -491,3 +491,17 @@ std::string conv::get_serving_network_name(
     snn = "5G:mnc" + mnc + ".mcc" + mcc + ".3gppnetwork.org";
   return snn;
 }
+
+//------------------------------------------------------------------------------
+std::string conv::uint32_to_hex_string(uint32_t value) {
+  char hex_str[8];
+  sprintf(hex_str, "%X", value);
+  return std::string(hex_str);
+}
+
+//------------------------------------------------------------------------------
+std::string conv::tmsi_to_guti(
+    const std::string& mcc, const std::string& mnc,
+    const std::string& region_id, const std::string& tmsi) {
+  return {mcc + mnc + region_id + tmsi};
+}

src/common/conversions.hpp

@@ -99,5 +99,9 @@ class conv {
       const uint32_t ran_ue_ngap_id, long amf_ue_ngap_id);
   static std::string get_serving_network_name(
       const std::string& mnc, const std::string& mcc);
+  static std::string uint32_to_hex_string(uint32_t value);
+  static std::string tmsi_to_guti(
+      const std::string& mcc, const std::string& mnc,
+      const std::string& region_id, const std::string& tmsi);
 };
 #endif /* FILE_CONVERSIONS_HPP_SEEN */