Code refactor for Mobile Identity

src/nas/ies/5GSMobileIdentity.hpp

@@ -31,7 +31,6 @@ extern "C" {
 #include "TLVEncoder.h"
 #include "bstrlib.h"
 }
-using namespace std;
 
 namespace nas {
 
@@ -51,18 +50,18 @@ typedef struct IMEI_or_IMEISV_s {
   bool odd_even_indic;   // for imei, even means bits 5 to 8 of last octet is
                          // "1111", for imeisv, bits 5 to 8 of last octet is
                          // "1111"
-  string identity;      // "46011000001"
+  std::string identity;  // "46011000001"
 } IMEI_IMEISV_t;
 
 // SUCI and SUPI format IMSI
 typedef struct SUCI_imsi_s {
   uint8_t supi_format : 3;
-  string mcc;
-  string mnc;
-  string routingIndicator;         //"1234"
+  std::string mcc;
+  std::string mnc;
+  std::optional<std::string> routingIndicator;  //"1234"
   uint8_t protectionSchemeId : 4;               // 0000
   uint8_t homeNetworkPKI;                       // 00000000
-  string msin;                     // two types of coding; BCD & hexadecimal
+  std::string msin;  // two types of coding; BCD & hexadecimal
 } SUCI_imsi_t;       // SUPI format "IMSI"
 
 // TODO: SUCI and SUPI format "Network specific identifier"
@@ -70,7 +69,7 @@ typedef struct SUCI_imsi_s {
 typedef struct _5G_S_TMSI_s {
   uint16_t amf_set_id;
   uint8_t amf_pointer;
-  string _5g_tmsi;
+  std::string _5g_tmsi;
 } _5G_S_TMSI_t;
 
 // TODO: 5GS mobile identity information element for type of identity "MAC
@@ -78,18 +77,13 @@ typedef struct _5G_S_TMSI_s {
 
 class _5GSMobileIdentity {
  public:
-  _5GSMobileIdentity(
-      uint8_t _iei, const uint16_t amfSetId, const uint8_t amfPointer,
-      const string tmsi);  // 5G-S-TMSI
-
   _5GSMobileIdentity();
+  _5GSMobileIdentity(uint8_t _iei);
   ~_5GSMobileIdentity();
 
   // Common
   uint8_t getTypeOfIdentity() const { return typeOfIdentity; };
-
   void setIEI(uint8_t _iei);
-
   int encode2Buffer(uint8_t* buf, int len);
   int decodeFromBuffer(uint8_t* buf, int len, bool is_option);
 
@@ -100,9 +94,9 @@ class _5GSMobileIdentity {
   int _5g_guti_decodefrombuffer(uint8_t* buf, int len);
   int _5g_guti_encode2buffer(uint8_t* buf, int len);
   void set5GGUTI(
-      const string& mcc, const string& mnc, const uint8_t& amf_region_id,
-      const uint16_t& amf_set_id, const uint8_t& amf_pointer,
-      const uint32_t& _5g_tmsi);
+      const std::string& mcc, const std::string& mnc,
+      const uint8_t& amf_region_id, const uint16_t& amf_set_id,
+      const uint8_t& amf_pointer, const uint32_t& _5g_tmsi);
   void get5GGUTI(std::optional<_5G_GUTI_t>&) const;
 
   // SUCI
@@ -110,27 +104,28 @@ class _5GSMobileIdentity {
   int suci_encode2buffer(uint8_t* buf, int len);
 
   void setSuciWithSupiImsi(
-      const string mcc, const string mnc, const string routingInd,
-      uint8_t protection_sch_id,
-      const string msin);  // TODO: SetSUCI, SUCI and SUPI format IMSI
+      const std::string& mcc, const std::string& mnc,
+      const std::string& routingInd, uint8_t protection_sch_id,
+      const std::string& msin);  // TODO: SetSUCI, SUCI and SUPI format IMSI
 
   void setSuciWithSupiImsi(
-      const string& mcc, const string& mnc, const string& routingInd,
-      uint8_t protecSchId, uint8_t home_pki, const string& msin_digits);
-  /*
-  void setSuciWithSupiImsi(
-      const string& mcc, const string& mnc, const string& routingInd,
-      uint8_t protecSchId, const string& msin_digits);
-      */
+      const std::string& mcc, const std::string& mnc,
+      const std::string& routingInd, uint8_t protecSchId, uint8_t home_pki,
+      const std::string& msin_digits);
   bool getSuciWithSupiImsi(SUCI_imsi_t&);
 
-  int encodeRoutid2buffer(string routid, uint8_t* buf);
-  int encodeMSIN2buffer(string msinstr, uint8_t* buf);
+  int encodeRoutid2buffer(
+      std::optional<std::string> routing_indicator, uint8_t* buf);
+  int encodeMSIN2buffer(std::string msinstr, uint8_t* buf);
 
   // TMSI
   int _5g_s_tmsi_encode2buffer(uint8_t* buf, int len);
   int _5g_s_tmsi_decodefrombuffer(uint8_t* buf, int len);
-  bool get5G_S_TMSI(uint16_t& amfSetId, uint8_t& amfPointer, string& tmsi);
+  bool get5G_S_TMSI(uint16_t& amfSetId, uint8_t& amfPointer, std::string& tmsi);
+
+  void set5G_S_TMSI(
+      const uint16_t amfSetId, const uint8_t amfPointer,
+      const std::string tmsi);
 
   // IMEISV
   int imeisv_encode2buffer(uint8_t* buf, int len);

src/nas/msgs/ServiceRequest.cpp

@@ -68,7 +68,8 @@ void ServiceRequest::setServiceType(uint8_t stp) {
 //------------------------------------------------------------------------------
 void ServiceRequest::set5G_S_TMSI(
     uint16_t amfSetId, uint8_t amfPointer, string tmsi) {
-  ie_5g_s_tmsi = new _5GSMobileIdentity(0x00, amfSetId, amfPointer, tmsi);
+  ie_5g_s_tmsi = new _5GSMobileIdentity(0x00);
+  ie_5g_s_tmsi->set5G_S_TMSI(amfSetId, amfPointer, tmsi);
 }
 
 //------------------------------------------------------------------------------