e2sim/e2apv1sim/ricsim.cpp

   1 /*****************************************************************************
   2 #                                                                            *
   3 # Copyright 2019 AT&T Intellectual Property                                  *
   4 # Copyright 2019 Nokia                                                       *
   5 #                                                                            *
   6 # Licensed under the Apache License, Version 2.0 (the "License");            *
   7 # you may not use this file except in compliance with the License.           *
   8 # You may obtain a copy of the License at                                    *
   9 #                                                                            *
  10 #      http://www.apache.org/licenses/LICENSE-2.0                            *
  11 #                                                                            *
  12 # Unless required by applicable law or agreed to in writing, software        *
  13 # distributed under the License is distributed on an "AS IS" BASIS,          *
  14 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   *
  15 # See the License for the specific language governing permissions and        *
  16 # limitations under the License.                                             *
  17 #                                                                            *
  18 ******************************************************************************/
  19
  20 #include <stdio.h>
  21 #include <unistd.h>
  22 #include <assert.h>
  23
  24 #include "e2sim_sctp.hpp"
  25 #include "e2ap_message_handler.hpp"
  26
  27 #include "encode_e2apv1.hpp"
  28 #include "encode_kpm.hpp"
  29
  30 extern "C" {
  31   #include "e2sim_defs.h"
  32   #include "E2AP-PDU.h"
  33   #include "e2ap_asn1c_codec.h"
  34   #include "GlobalE2node-ID.h"
  35   #include "GlobalE2node-gNB-ID.h"
  36   #include "GlobalgNB-ID.h"
  37   #include "OCTET_STRING.h"
  38   #include "asn_application.h"
  39   #include "GNB-ID-Choice.h"
  40   #include "ProtocolIE-Field.h"
  41   #include "E2setupRequest.h"
  42   #include "RICaction-ToBeSetup-Item.h"
  43   #include "RICactions-ToBeSetup-List.h"
  44   #include "RICeventTriggerDefinition.h"
  45   #include "RICsubscriptionRequest.h"
  46   #include "ProtocolIE-SingleContainer.h"
  47   #include "RANfunctions-List.h"
  48   #include "RICindication.h"
  49   #include "RICsubsequentActionType.h"
  50   #include "RICsubsequentAction.h"
  51   #include "RICtimeToWait.h"
  52 }
  53
  54 using namespace std;
  55
  56 /*
  57 struct {
  58   type **array;
  59   int count;
  60   int size;
  61   void (*free)(decltype(*array));
  62 }
  63 */
  64
  65 void encode_and_send_sctp_data(E2AP_PDU_t* pdu, int client_fd)
  66 {
  67   uint8_t       *buf;
  68   sctp_buffer_t data;
  69
  70   data.len = e2ap_asn1c_encode_pdu(pdu, &buf);
  71   memcpy(data.buffer, buf, min(data.len, MAX_SCTP_BUFFER));
  72
  73   sctp_send_data(client_fd, data);
  74 }
  75
  76 void wait_for_sctp_data(int client_fd)
  77 {
  78   sctp_buffer_t recv_buf;
  79   if(sctp_receive_data(client_fd, recv_buf) > 0)
  80   {
  81     LOG_I("[SCTP] Received new data of size %d", recv_buf.len);
  82     e2ap_handle_sctp_data(client_fd, recv_buf, false);
  83   }
  84 }
  85
  86
  87
  88 int main(int argc, char* argv[]){
  89   LOG_I("Start RIC Simulator");
  90
  91   bool xmlenc = true;
  92
  93   options_t ops = read_input_options(argc, argv);
  94
  95   int server_fd = sctp_start_server(ops.server_ip, ops.server_port);
  96   int client_fd = sctp_accept_connection(ops.server_ip, server_fd);
  97
  98   sctp_buffer_t recv_buf;
  99
 100   LOG_I("[SCTP] Waiting for SCTP data");
 101
 102   while(1) //constantly looking for data on SCTP interface
 103   {
 104     LOG_I("in while loop");
 105     if(sctp_receive_data(client_fd, recv_buf) <= 0)
 106       break;
 107
 108     LOG_I("[SCTP] Received new data of size %d", recv_buf.len);
 109
 110     e2ap_handle_sctp_data(client_fd, recv_buf, xmlenc);
 111
 112     if (xmlenc)
 113       xmlenc = false;
 114   }
 115
 116   return 0;
 117
 118 }