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471 lines
18 KiB
C++
471 lines
18 KiB
C++
/*
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* Copyright 2013-2020 Software Radio Systems Limited
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*
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* This file is part of srsLTE.
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*
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* srsLTE is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of
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* the License, or (at your option) any later version.
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*
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* srsLTE is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* A copy of the GNU Affero General Public License can be found in
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* the LICENSE file in the top-level directory of this distribution
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* and at http://www.gnu.org/licenses/.
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*
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*/
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#include "srsepc/hdr/hss/hss.h"
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#include "srsepc/hdr/mme/mme.h"
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#include "srsepc/hdr/spgw/spgw.h"
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#include "srslte/build_info.h"
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#include "srslte/common/bcd_helpers.h"
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#include "srslte/common/config_file.h"
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#include "srslte/common/crash_handler.h"
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#include "srslte/common/signal_handler.h"
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#include <boost/program_options.hpp>
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#include <iostream>
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#include <signal.h>
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using namespace std;
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using namespace srsepc;
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namespace bpo = boost::program_options;
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typedef struct {
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std::string nas_level;
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int nas_hex_limit;
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std::string s1ap_level;
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int s1ap_hex_limit;
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std::string mme_gtpc_level;
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int mme_gtpc_hex_limit;
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std::string spgw_gtpc_level;
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int spgw_gtpc_hex_limit;
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std::string gtpu_level;
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int gtpu_hex_limit;
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std::string spgw_level;
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int spgw_hex_limit;
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std::string hss_level;
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int hss_hex_limit;
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std::string all_level;
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int all_hex_limit;
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std::string filename;
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} log_args_t;
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typedef struct {
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mme_args_t mme_args;
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hss_args_t hss_args;
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spgw_args_t spgw_args;
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log_args_t log_args;
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} all_args_t;
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/**********************************************************************
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* Program arguments processing
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***********************************************************************/
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string config_file;
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void parse_args(all_args_t* args, int argc, char* argv[])
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{
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string mme_name;
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string mme_code;
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string mme_group;
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string tac;
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string mcc;
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string mnc;
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string mme_bind_addr;
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string mme_apn;
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string encryption_algo;
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string integrity_algo;
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uint16_t paging_timer = 0;
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uint32_t max_paging_queue = 0;
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string spgw_bind_addr;
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string sgi_if_addr;
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string sgi_if_name;
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string dns_addr;
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string hss_db_file;
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string hss_auth_algo;
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string log_filename;
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// Command line only options
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bpo::options_description general("General options");
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// clang-format off
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general.add_options()
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("help,h", "Produce help message")
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("version,v", "Print version information and exit")
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;
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// Command line or config file options
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bpo::options_description common("Configuration options");
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common.add_options()
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("mme.mme_code", bpo::value<string>(&mme_code)->default_value("0x01"), "MME Code")
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("mme.name", bpo::value<string>(&mme_name)->default_value("srsmme01"), "MME Name")
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("mme.mme_group", bpo::value<string>(&mme_group)->default_value("0x01"), "Cell ID")
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("mme.tac", bpo::value<string>(&tac)->default_value("0x0"), "Tracking Area Code")
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("mme.mcc", bpo::value<string>(&mcc)->default_value("001"), "Mobile Country Code")
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("mme.mnc", bpo::value<string>(&mnc)->default_value("01"), "Mobile Network Code")
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("mme.mme_bind_addr", bpo::value<string>(&mme_bind_addr)->default_value("127.0.0.1"), "IP address of MME for S1 connection")
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("mme.dns_addr", bpo::value<string>(&dns_addr)->default_value("8.8.8.8"), "IP address of the DNS server for the UEs")
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("mme.apn", bpo::value<string>(&mme_apn)->default_value(""), "Set Access Point Name (APN) for data services")
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("mme.encryption_algo", bpo::value<string>(&encryption_algo)->default_value("EEA0"), "Set preferred encryption algorithm for NAS layer ")
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("mme.integrity_algo", bpo::value<string>(&integrity_algo)->default_value("EIA1"), "Set preferred integrity protection algorithm for NAS")
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("mme.paging_timer", bpo::value<uint16_t>(&paging_timer)->default_value(2), "Set paging timer value in seconds (T3413)")
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("hss.db_file", bpo::value<string>(&hss_db_file)->default_value("ue_db.csv"), ".csv file that stores UE's keys")
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("spgw.gtpu_bind_addr", bpo::value<string>(&spgw_bind_addr)->default_value("127.0.0.1"), "IP address of SP-GW for the S1-U connection")
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("spgw.sgi_if_addr", bpo::value<string>(&sgi_if_addr)->default_value("176.16.0.1"), "IP address of TUN interface for the SGi connection")
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("spgw.sgi_if_name", bpo::value<string>(&sgi_if_name)->default_value("srs_spgw_sgi"), "Name of TUN interface for the SGi connection")
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("spgw.max_paging_queue", bpo::value<uint32_t>(&max_paging_queue)->default_value(100), "Max number of packets in paging queue")
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("pcap.enable", bpo::value<bool>(&args->mme_args.s1ap_args.pcap_enable)->default_value(false), "Enable S1AP PCAP")
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("pcap.filename", bpo::value<string>(&args->mme_args.s1ap_args.pcap_filename)->default_value("/tmp/epc.pcap"), "PCAP filename")
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("log.nas_level", bpo::value<string>(&args->log_args.nas_level), "MME NAS log level")
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("log.nas_hex_limit", bpo::value<int>(&args->log_args.nas_hex_limit), "MME NAS log hex dump limit")
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("log.s1ap_level", bpo::value<string>(&args->log_args.s1ap_level), "MME S1AP log level")
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("log.s1ap_hex_limit", bpo::value<int>(&args->log_args.s1ap_hex_limit), "MME S1AP log hex dump limit")
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("log.mme_gtpc_level", bpo::value<string>(&args->log_args.mme_gtpc_level), "MME GTPC log level")
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("log.mme_gtpc_hex_limit", bpo::value<int>(&args->log_args.mme_gtpc_hex_limit), "MME GTPC log hex dump limit")
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("log.spgw_gtpc_level", bpo::value<string>(&args->log_args.spgw_gtpc_level), "SPGW GTPC log level")
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("log.spgw_gtpc_hex_limit", bpo::value<int>(&args->log_args.spgw_gtpc_hex_limit), "SPGW GTPC log hex dump limit")
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("log.gtpu_level", bpo::value<string>(&args->log_args.gtpu_level), "GTP-U log level")
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("log.gtpu_hex_limit", bpo::value<int>(&args->log_args.gtpu_hex_limit), "GTP-U log hex dump limit")
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("log.spgw_level", bpo::value<string>(&args->log_args.spgw_level), "SPGW log level")
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("log.spgw_hex_limit", bpo::value<int>(&args->log_args.spgw_hex_limit), "SPGW log hex dump limit")
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("log.hss_level", bpo::value<string>(&args->log_args.hss_level), "HSS log level")
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("log.hss_hex_limit", bpo::value<int>(&args->log_args.hss_hex_limit), "HSS log hex dump limit")
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("log.all_level", bpo::value<string>(&args->log_args.all_level)->default_value("info"), "ALL log level")
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("log.all_hex_limit", bpo::value<int>(&args->log_args.all_hex_limit)->default_value(32), "ALL log hex dump limit")
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("log.filename", bpo::value<string>(&args->log_args.filename)->default_value("/tmp/epc.log"),"Log filename")
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;
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// Positional options - config file location
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bpo::options_description position("Positional options");
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position.add_options()
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("config_file", bpo::value< string >(&config_file), "MME configuration file")
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;
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// clang-format on
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bpo::positional_options_description p;
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p.add("config_file", -1);
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// these options are allowed on the command line
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bpo::options_description cmdline_options;
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cmdline_options.add(common).add(position).add(general);
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// parse the command line and store result in vm
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bpo::variables_map vm;
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try {
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bpo::store(bpo::command_line_parser(argc, argv).options(cmdline_options).positional(p).run(), vm);
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bpo::notify(vm);
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} catch (bpo::error& e) {
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cerr << e.what() << endl;
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exit(1);
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}
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// help option was given - print usage and exit
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if (vm.count("help")) {
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cout << "Usage: " << argv[0] << " [OPTIONS] config_file" << endl << endl;
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cout << common << endl << general << endl;
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exit(0);
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}
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// if no config file given, check users home path
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if (!vm.count("config_file")) {
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if (!config_exists(config_file, "epc.conf")) {
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cout << "Failed to read EPC configuration file " << config_file << " - exiting" << endl;
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exit(1);
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}
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}
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// Parsing Config File
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cout << "Reading configuration file " << config_file << "..." << endl;
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ifstream conf(config_file.c_str(), ios::in);
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if (conf.fail()) {
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cout << "Failed to read configuration file " << config_file << " - exiting" << endl;
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exit(1);
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}
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// parse config file and handle errors gracefully
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try {
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bpo::store(bpo::parse_config_file(conf, common), vm);
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bpo::notify(vm);
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} catch (const boost::program_options::error& e) {
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cerr << e.what() << endl;
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exit(1);
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}
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// Concert hex strings
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{
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std::stringstream sstr;
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sstr << std::hex << vm["mme.mme_group"].as<std::string>();
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sstr >> args->mme_args.s1ap_args.mme_group;
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}
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{
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std::stringstream sstr;
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sstr << std::hex << vm["mme.mme_code"].as<std::string>();
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uint16_t tmp; // Need intermediate uint16_t as uint8_t is treated as char
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sstr >> tmp;
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args->mme_args.s1ap_args.mme_code = tmp;
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}
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{
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std::stringstream sstr;
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sstr << std::hex << vm["mme.tac"].as<std::string>();
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sstr >> args->mme_args.s1ap_args.tac;
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}
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// Convert MCC/MNC strings
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if (!srslte::string_to_mcc(mcc, &args->mme_args.s1ap_args.mcc)) {
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cout << "Error parsing mme.mcc:" << mcc << " - must be a 3-digit string." << endl;
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}
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if (!srslte::string_to_mnc(mnc, &args->mme_args.s1ap_args.mnc)) {
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cout << "Error parsing mme.mnc:" << mnc << " - must be a 2 or 3-digit string." << endl;
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}
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// Convert MCC/MNC strings
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if (!srslte::string_to_mcc(mcc, &args->hss_args.mcc)) {
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cout << "Error parsing mme.mcc:" << mcc << " - must be a 3-digit string." << endl;
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}
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if (!srslte::string_to_mnc(mnc, &args->hss_args.mnc)) {
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cout << "Error parsing mme.mnc:" << mnc << " - must be a 2 or 3-digit string." << endl;
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}
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std::transform(encryption_algo.begin(), encryption_algo.end(), encryption_algo.begin(), ::tolower);
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if (encryption_algo == "eea0") {
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args->mme_args.s1ap_args.encryption_algo = srslte::CIPHERING_ALGORITHM_ID_EEA0;
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} else if (encryption_algo == "eea1") {
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args->mme_args.s1ap_args.encryption_algo = srslte::CIPHERING_ALGORITHM_ID_128_EEA1;
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} else if (encryption_algo == "eea2") {
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args->mme_args.s1ap_args.encryption_algo = srslte::CIPHERING_ALGORITHM_ID_128_EEA2;
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} else if (encryption_algo == "eea3") {
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args->mme_args.s1ap_args.encryption_algo = srslte::CIPHERING_ALGORITHM_ID_128_EEA3;
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} else {
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args->mme_args.s1ap_args.encryption_algo = srslte::CIPHERING_ALGORITHM_ID_EEA0;
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cout << "Error parsing mme.encryption_algo:" << encryption_algo << " - must be EEA0, EEA1, EEA2 or EEA3." << endl;
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cout << "Using default mme.encryption_algo: EEA0" << endl;
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}
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std::transform(integrity_algo.begin(), integrity_algo.end(), integrity_algo.begin(), ::tolower);
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if (integrity_algo == "eia0") {
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args->mme_args.s1ap_args.integrity_algo = srslte::INTEGRITY_ALGORITHM_ID_EIA0;
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cout << "Warning parsing mme.integrity_algo:" << encryption_algo
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<< " - EIA0 will not supported by UEs use EIA1 or EIA2" << endl;
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} else if (integrity_algo == "eia1") {
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args->mme_args.s1ap_args.integrity_algo = srslte::INTEGRITY_ALGORITHM_ID_128_EIA1;
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} else if (integrity_algo == "eia2") {
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args->mme_args.s1ap_args.integrity_algo = srslte::INTEGRITY_ALGORITHM_ID_128_EIA2;
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} else if (integrity_algo == "eia3") {
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args->mme_args.s1ap_args.integrity_algo = srslte::INTEGRITY_ALGORITHM_ID_128_EIA3;
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} else {
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args->mme_args.s1ap_args.integrity_algo = srslte::INTEGRITY_ALGORITHM_ID_128_EIA1;
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cout << "Error parsing mme.integrity_algo:" << encryption_algo << " - must be EIA0, EIA1, EIA2 or EIA3." << endl;
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cout << "Using default mme.integrity_algo: EIA1" << endl;
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}
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args->mme_args.s1ap_args.mme_bind_addr = mme_bind_addr;
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args->mme_args.s1ap_args.mme_name = mme_name;
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args->mme_args.s1ap_args.dns_addr = dns_addr;
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args->mme_args.s1ap_args.mme_apn = mme_apn;
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args->mme_args.s1ap_args.paging_timer = paging_timer;
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args->spgw_args.gtpu_bind_addr = spgw_bind_addr;
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args->spgw_args.sgi_if_addr = sgi_if_addr;
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args->spgw_args.sgi_if_name = sgi_if_name;
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args->spgw_args.max_paging_queue = max_paging_queue;
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args->hss_args.db_file = hss_db_file;
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// Apply all_level to any unset layers
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if (vm.count("log.all_level")) {
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if (!vm.count("log.nas_level")) {
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args->log_args.nas_level = args->log_args.all_level;
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}
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if (!vm.count("log.s1ap_level")) {
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args->log_args.s1ap_level = args->log_args.all_level;
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}
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if (!vm.count("log.mme_gtpc_level")) {
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args->log_args.mme_gtpc_level = args->log_args.all_level;
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}
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if (!vm.count("log.spgw_gtpc_level")) {
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args->log_args.spgw_gtpc_level = args->log_args.all_level;
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}
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if (!vm.count("log.gtpu_level")) {
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args->log_args.gtpu_level = args->log_args.all_level;
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}
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if (!vm.count("log.spgw_level")) {
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args->log_args.spgw_level = args->log_args.all_level;
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}
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if (!vm.count("log.hss_level")) {
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args->log_args.hss_level = args->log_args.all_level;
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}
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}
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// Apply all_hex_limit to any unset layers
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if (vm.count("log.all_hex_limit")) {
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if (!vm.count("log.s1ap_hex_limit")) {
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args->log_args.s1ap_hex_limit = args->log_args.all_hex_limit;
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}
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if (!vm.count("log.mme_gtpc_hex_limit")) {
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args->log_args.mme_gtpc_hex_limit = args->log_args.all_hex_limit;
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}
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if (!vm.count("log.spgw_gtpc_hex_limit")) {
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args->log_args.spgw_gtpc_hex_limit = args->log_args.all_hex_limit;
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}
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if (!vm.count("log.gtpu_hex_limit")) {
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args->log_args.gtpu_hex_limit = args->log_args.all_hex_limit;
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}
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if (!vm.count("log.spgw_hex_limit")) {
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args->log_args.spgw_hex_limit = args->log_args.all_hex_limit;
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}
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if (!vm.count("log.hss_hex_limit")) {
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args->log_args.hss_hex_limit = args->log_args.all_hex_limit;
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}
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if (!vm.count("log.nas_hex_limit")) {
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args->log_args.nas_hex_limit = args->log_args.all_hex_limit;
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}
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}
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// Check user database
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if (!config_exists(args->hss_args.db_file, "user_db.csv")) {
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cout << "Failed to read HSS user database file " << args->hss_args.db_file << " - exiting" << endl;
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exit(1);
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}
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return;
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}
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srslte::LOG_LEVEL_ENUM level(std::string l)
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{
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std::transform(l.begin(), l.end(), l.begin(), ::toupper);
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if ("NONE" == l) {
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return srslte::LOG_LEVEL_NONE;
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} else if ("ERROR" == l) {
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return srslte::LOG_LEVEL_ERROR;
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} else if ("WARNING" == l) {
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return srslte::LOG_LEVEL_WARNING;
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} else if ("INFO" == l) {
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return srslte::LOG_LEVEL_INFO;
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} else if ("DEBUG" == l) {
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return srslte::LOG_LEVEL_DEBUG;
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} else {
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return srslte::LOG_LEVEL_NONE;
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}
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}
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std::string get_build_mode()
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{
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return std::string(srslte_get_build_mode());
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}
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std::string get_build_info()
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{
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if (std::string(srslte_get_build_info()).find(" ") != std::string::npos) {
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return std::string(srslte_get_version());
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}
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return std::string(srslte_get_build_info());
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}
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std::string get_build_string()
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{
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std::stringstream ss;
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ss << "Built in " << get_build_mode() << " mode using " << get_build_info() << "." << std::endl;
|
|
return ss.str();
|
|
}
|
|
|
|
int main(int argc, char* argv[])
|
|
{
|
|
srslte_register_signal_handler();
|
|
|
|
// print build info
|
|
cout << endl << get_build_string() << endl;
|
|
|
|
cout << endl << "--- Software Radio Systems EPC ---" << endl << endl;
|
|
srslte_debug_handle_crash(argc, argv);
|
|
|
|
all_args_t args;
|
|
parse_args(&args, argc, argv);
|
|
|
|
srslte::logger_stdout logger_stdout;
|
|
srslte::logger* logger;
|
|
|
|
/*Init logger*/
|
|
if (args.log_args.filename == "stdout") {
|
|
logger = &logger_stdout;
|
|
} else {
|
|
logger_file.init(args.log_args.filename);
|
|
logger_file.log_char("\n\n");
|
|
logger_file.log_char(get_build_string().c_str());
|
|
logger_file.log_char("\n--- Software Radio Systems EPC log ---\n\n");
|
|
logger = &logger_file;
|
|
}
|
|
srslte::logmap::set_default_logger(logger);
|
|
|
|
srslte::log_filter nas_log;
|
|
nas_log.init("NAS ", logger);
|
|
nas_log.set_level(level(args.log_args.nas_level));
|
|
nas_log.set_hex_limit(args.log_args.nas_hex_limit);
|
|
|
|
srslte::log_filter s1ap_log;
|
|
s1ap_log.init("S1AP", logger);
|
|
s1ap_log.set_level(level(args.log_args.s1ap_level));
|
|
s1ap_log.set_hex_limit(args.log_args.s1ap_hex_limit);
|
|
|
|
srslte::log_filter mme_gtpc_log;
|
|
mme_gtpc_log.init("MME GTPC", logger);
|
|
mme_gtpc_log.set_level(level(args.log_args.mme_gtpc_level));
|
|
mme_gtpc_log.set_hex_limit(args.log_args.mme_gtpc_hex_limit);
|
|
|
|
srslte::log_filter hss_log;
|
|
hss_log.init("HSS ", logger);
|
|
hss_log.set_level(level(args.log_args.hss_level));
|
|
hss_log.set_hex_limit(args.log_args.hss_hex_limit);
|
|
|
|
srslte::log_filter spgw_gtpc_log;
|
|
spgw_gtpc_log.init("SPGW GTPC", logger);
|
|
spgw_gtpc_log.set_level(level(args.log_args.spgw_gtpc_level));
|
|
spgw_gtpc_log.set_hex_limit(args.log_args.spgw_gtpc_hex_limit);
|
|
|
|
srslte::log_ref gtpu_log{"GTPU"};
|
|
gtpu_log->set_level(level(args.log_args.mme_gtpc_level));
|
|
gtpu_log->set_hex_limit(args.log_args.mme_gtpc_hex_limit);
|
|
|
|
srslte::log_filter spgw_log;
|
|
spgw_log.init("SPGW", logger);
|
|
spgw_log.set_level(level(args.log_args.spgw_level));
|
|
spgw_log.set_hex_limit(args.log_args.spgw_hex_limit);
|
|
|
|
hss* hss = hss::get_instance();
|
|
if (hss->init(&args.hss_args, &hss_log)) {
|
|
cout << "Error initializing HSS" << endl;
|
|
exit(1);
|
|
}
|
|
|
|
mme* mme = mme::get_instance();
|
|
if (mme->init(&args.mme_args, &nas_log, &s1ap_log, &mme_gtpc_log)) {
|
|
cout << "Error initializing MME" << endl;
|
|
exit(1);
|
|
}
|
|
|
|
spgw* spgw = spgw::get_instance();
|
|
if (spgw->init(&args.spgw_args, gtpu_log, &spgw_gtpc_log, &spgw_log, hss->get_ip_to_imsi())) {
|
|
cout << "Error initializing SP-GW" << endl;
|
|
exit(1);
|
|
}
|
|
|
|
mme->start();
|
|
spgw->start();
|
|
while (running) {
|
|
sleep(1);
|
|
}
|
|
|
|
mme->stop();
|
|
mme->cleanup();
|
|
spgw->stop();
|
|
spgw->cleanup();
|
|
hss->stop();
|
|
hss->cleanup();
|
|
|
|
cout << std::endl << "--- exiting ---" << endl;
|
|
return 0;
|
|
}
|