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137 lines
4.1 KiB
C++
137 lines
4.1 KiB
C++
/**
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*
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* \section COPYRIGHT
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*
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* Copyright 2013-2017 Software Radio Systems Limited
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*
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* \section LICENSE
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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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/******************************************************************************
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* File: hss.h
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* Description: Top-level HSS class. Creates and links all
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* interfaces and helpers.
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*****************************************************************************/
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#ifndef SRSEPC_HSS_H
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#define SRSEPC_HSS_H
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#include <cstddef>
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#include "srslte/common/log.h"
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#include "srslte/common/logger_file.h"
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#include "srslte/common/log_filter.h"
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#include "srslte/common/buffer_pool.h"
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#include "srslte/interfaces/epc_interfaces.h"
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#include <fstream>
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#include <map>
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#define LTE_FDD_ENB_IND_HE_N_BITS 5
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#define LTE_FDD_ENB_IND_HE_MASK 0x1FUL
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#define LTE_FDD_ENB_IND_HE_MAX_VALUE 31
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#define LTE_FDD_ENB_SEQ_HE_MAX_VALUE 0x07FFFFFFFFFFUL
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namespace srsepc {
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typedef struct {
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std::string db_file;
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uint16_t mcc;
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uint16_t mnc;
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} hss_args_t;
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enum hss_auth_algo { HSS_ALGO_XOR, HSS_ALGO_MILENAGE };
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typedef struct {
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std::string name;
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uint64_t imsi;
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enum hss_auth_algo algo;
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uint8_t key[16];
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bool op_configured;
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uint8_t op[16];
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uint8_t opc[16];
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uint8_t amf[2];
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uint8_t sqn[6];
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uint16_t qci;
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uint8_t last_rand[16];
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std::string static_ip_addr;
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} hss_ue_ctx_t;
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class hss : public hss_interface_nas
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{
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public:
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static hss* get_instance(void);
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static void cleanup(void);
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int init(hss_args_t* hss_args, srslte::log_filter* hss_log);
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void stop(void);
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virtual bool gen_auth_info_answer(uint64_t imsi, uint8_t* k_asme, uint8_t* autn, uint8_t* rand, uint8_t* xres);
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virtual bool gen_update_loc_answer(uint64_t imsi, uint8_t* qci);
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virtual bool resync_sqn(uint64_t imsi, uint8_t* auts);
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std::map<std::string, uint64_t> get_ip_to_imsi() const;
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private:
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hss();
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virtual ~hss();
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static hss* m_instance;
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std::map<uint64_t, hss_ue_ctx_t*> m_imsi_to_ue_ctx;
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void gen_rand(uint8_t rand_[16]);
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bool get_k_amf_opc_sqn(uint64_t imsi, uint8_t* k, uint8_t* amf, uint8_t* opc, uint8_t* sqn);
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bool gen_auth_info_answer_milenage(uint64_t imsi, uint8_t* k_asme, uint8_t* autn, uint8_t* rand, uint8_t* xres);
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bool gen_auth_info_answer_xor(uint64_t imsi, uint8_t* k_asme, uint8_t* autn, uint8_t* rand, uint8_t* xres);
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bool resync_sqn_milenage(uint64_t imsi, uint8_t* auts);
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bool resync_sqn_xor(uint64_t imsi, uint8_t* auts);
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std::vector<std::string> split_string(const std::string& str, char delimiter);
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void get_uint_vec_from_hex_str(const std::string& key_str, uint8_t* key, uint len);
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void increment_ue_sqn(uint64_t imsi);
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void increment_seq_after_resync(uint64_t imsi);
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void increment_sqn(uint8_t* sqn, uint8_t* next_sqn);
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void set_sqn(uint64_t imsi, uint8_t* sqn);
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void set_last_rand(uint64_t imsi, uint8_t* rand);
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void get_last_rand(uint64_t imsi, uint8_t* rand);
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bool set_auth_algo(std::string auth_algo);
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bool read_db_file(std::string db_file);
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bool write_db_file(std::string db_file);
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bool get_ue_ctx(uint64_t imsi, hss_ue_ctx_t** ue_ctx);
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std::string hex_string(uint8_t* hex, int size);
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std::string db_file;
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/*Logs*/
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srslte::log_filter* m_hss_log;
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uint16_t mcc;
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uint16_t mnc;
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std::map<std::string, uint64_t> m_ip_to_imsi;
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};
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} // namespace srsepc
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#endif // SRSEPC_HSS_H
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