improve logging in oaisim

- print current working directory
- print git version (if available)
- print security keys
  this last one is a security breach, but as of today
  it's not a problem

openair3/NAS/TOOLS/display.c

@@ -248,6 +248,14 @@ void display_usim_data(const char *filename) {
 	memcpy(key, data.keys.ik, USIM_IK_SIZE);
 	printf("\tIK\t: \"%s\"\n", key);
 
+        printf("\n\tusim_api_k:");
+        for (int i = 0; i < 16; i++)
+          printf(" %2.2x", data.keys.usim_api_k[i]);
+        printf("\n\topc       :");
+        for (int i = 0; i < 16; i++)
+          printf(" %2.2x", data.keys.opc[i]);
+        printf("\n\n");
+
 	printf("EPS NAS security context:\n");
 	printf("\tKSIasme\t: 0x%.2x\n", data.securityctx.KSIasme.value[0]);
 	char kasme[USIM_K_ASME_SIZE + 1];

openair3/NAS/UE/EMM/emm_main.c

@@ -203,6 +203,52 @@ void emm_main_initialize(nas_user_t *user, emm_indication_callback_t cb, const c
     LOG_TRACE(INFO, "EMM-MAIN  - USIM application data successfully read");
     user->emm_data->usim_is_valid = TRUE;
 
+    /* print keys (for debugging) */
+    {
+      char usim_api_k[256];
+      char opc[256];
+      sprintf(usim_api_k,
+              "%2.2x %2.2x %2.2x %2.2x %2.2x %2.2x %2.2x %2.2x "
+              "%2.2x %2.2x %2.2x %2.2x %2.2x %2.2x %2.2x %2.2x",
+              user->usim_data.keys.usim_api_k[0],
+              user->usim_data.keys.usim_api_k[1],
+              user->usim_data.keys.usim_api_k[2],
+              user->usim_data.keys.usim_api_k[3],
+              user->usim_data.keys.usim_api_k[4],
+              user->usim_data.keys.usim_api_k[5],
+              user->usim_data.keys.usim_api_k[6],
+              user->usim_data.keys.usim_api_k[7],
+              user->usim_data.keys.usim_api_k[8],
+              user->usim_data.keys.usim_api_k[9],
+              user->usim_data.keys.usim_api_k[10],
+              user->usim_data.keys.usim_api_k[11],
+              user->usim_data.keys.usim_api_k[12],
+              user->usim_data.keys.usim_api_k[13],
+              user->usim_data.keys.usim_api_k[14],
+              user->usim_data.keys.usim_api_k[15]);
+      sprintf(opc,
+              "%2.2x %2.2x %2.2x %2.2x %2.2x %2.2x %2.2x %2.2x "
+              "%2.2x %2.2x %2.2x %2.2x %2.2x %2.2x %2.2x %2.2x",
+              user->usim_data.keys.opc[0],
+              user->usim_data.keys.opc[1],
+              user->usim_data.keys.opc[2],
+              user->usim_data.keys.opc[3],
+              user->usim_data.keys.opc[4],
+              user->usim_data.keys.opc[5],
+              user->usim_data.keys.opc[6],
+              user->usim_data.keys.opc[7],
+              user->usim_data.keys.opc[8],
+              user->usim_data.keys.opc[9],
+              user->usim_data.keys.opc[10],
+              user->usim_data.keys.opc[11],
+              user->usim_data.keys.opc[12],
+              user->usim_data.keys.opc[13],
+              user->usim_data.keys.opc[14],
+              user->usim_data.keys.opc[15]);
+      LOG_TRACE(INFO, "EMM-MAIN  - usim_api_k: %s", usim_api_k);
+      LOG_TRACE(INFO, "EMM-MAIN  - opc:        %s", opc);
+    }
+
     /* Get the Home PLMN derived from the IMSI */
     user->emm_data->hplmn.MCCdigit1 = user->usim_data.imsi.u.num.digit1;
     user->emm_data->hplmn.MCCdigit2 = user->usim_data.imsi.u.num.digit2;

targets/SIMU/USER/oaisim.c

@@ -1188,6 +1188,15 @@ int T_port = 2021;    /* default port to listen to to wait for the tracer */
 int T_dont_fork = 0;  /* default is to fork, see 'T_init' to understand */
 #endif
 
+static void print_current_directory(void)
+{
+  char dir[8192]; /* arbitrary size (should be big enough) */
+  if (getcwd(dir, 8192) == NULL)
+    printf("ERROR getting working directory\n");
+  else
+    printf("working directory: %s\n", dir);
+}
+
 /*------------------------------------------------------------------------------*/
 int
 main (int argc, char **argv)
@@ -1195,6 +1204,8 @@ main (int argc, char **argv)
 
   clock_t t;
 
+  print_current_directory();
+
   start_background_system();
 
 #ifdef SMBV
@@ -1350,6 +1361,11 @@ main (int argc, char **argv)
   LOG_N(EMU,
         ">>>>>>>>>>>>>>>>>>>>>>>>>>> OAIEMU initialization done <<<<<<<<<<<<<<<<<<<<<<<<<<\n\n");
 
+#ifndef PACKAGE_VERSION
+#  define PACKAGE_VERSION "UNKNOWN-EXPERIMENTAL"
+#endif
+  LOG_I(EMU, "Version: %s\n", PACKAGE_VERSION);
+
 #if defined(ENABLE_ITTI)
 
   // Handle signals until all tasks are terminated