mirror of https://github.com/pvnis/srsRAN_4G.git
created a asn1 utils with helper functions and types related to the asn1. These types/functions will help isolate the rrc_asn1 lib from most of the layers, reducing this way the compile times, and leading to better isolation. This will also make the transition to NR smoother. I removed the asn1 types from the NAS and USIM interface so far.
Francisco Paisana
6 years ago
committed by
Andre Puschmann
parent
416f9896ec
commit
bb0dbf0f1c
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/*
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* Copyright 2013-2019 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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#ifndef SRSLTE_RRC_ASN1_UTILS_H
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#define SRSLTE_RRC_ASN1_UTILS_H
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#include <string>
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// fwd decls
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namespace asn1 {
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namespace rrc {
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struct plmn_id_s;
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struct s_tmsi_s;
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} // namespace rrc
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} // namespace asn1
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namespace srslte {
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struct plmn_id_t {
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uint8_t mcc[3];
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uint8_t mnc[3];
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uint8_t nof_mnc_digits;
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plmn_id_t() : mcc(), mnc(), nof_mnc_digits(0) {}
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int from_asn1(const asn1::rrc::plmn_id_s* asn1_type);
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void to_asn1(asn1::rrc::plmn_id_s* asn1_type) const;
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void from_number(uint16_t mcc_num, uint16_t mnc_num);
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int from_string(const std::string& plmn_str);
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std::string to_string() const;
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};
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struct s_tmsi_t {
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uint8_t mmec;
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uint32_t m_tmsi;
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void from_asn1(const asn1::rrc::s_tmsi_s* asn1_type);
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void to_asn1(asn1::rrc::s_tmsi_s* asn1_type) const;
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};
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enum class establishment_cause_t {
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emergency,
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high_prio_access,
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mt_access,
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mo_sig,
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mo_data,
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delay_tolerant_access_v1020,
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mo_voice_call_v1280,
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spare1,
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nulltype
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};
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std::string to_string(const establishment_cause_t& cause);
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}
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#endif // SRSLTE_RRC_ASN1_UTILS_H
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@ -0,0 +1,105 @@
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/*
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* Copyright 2013-2019 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 "srslte/asn1/rrc_asn1_utils.h"
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#include "srslte/asn1/rrc_asn1.h"
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#include "srslte/common/bcd_helpers.h"
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#include "srslte/config.h"
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#include <algorithm>
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namespace srslte {
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int plmn_id_t::from_asn1(const asn1::rrc::plmn_id_s* asn1_type)
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{
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if (not asn1_type->mcc_present) {
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return SRSLTE_ERROR;
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}
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std::copy(&asn1_type->mcc[0], &asn1_type->mcc[3], &mcc[0]);
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nof_mnc_digits = asn1_type->mnc.size();
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std::copy(&asn1_type->mnc[0], &asn1_type->mnc[nof_mnc_digits], &mnc[0]);
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return SRSLTE_SUCCESS;
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}
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void plmn_id_t::to_asn1(asn1::rrc::plmn_id_s* asn1_type) const
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{
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asn1_type->mcc_present = true;
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std::copy(&mcc[0], &mcc[3], &asn1_type->mcc[0]);
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asn1_type->mnc.resize(nof_mnc_digits);
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std::copy(&mnc[0], &mnc[nof_mnc_digits], &asn1_type->mnc[0]);
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}
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void plmn_id_t::from_number(uint16_t mcc_num, uint16_t mnc_num)
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{
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srslte::mcc_to_bytes(mcc_num, &mcc[0]);
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srslte::mnc_to_bytes(mnc_num, &mnc[0], &nof_mnc_digits);
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}
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int plmn_id_t::from_string(const std::string& plmn_str)
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{
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if (plmn_str.size() < 5 or plmn_str.size() > 6) {
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return SRSLTE_ERROR;
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}
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uint16_t mnc_num, mcc_num;
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if (not string_to_mcc(std::string(plmn_str.begin(), plmn_str.begin() + 3), &mcc_num)) {
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return SRSLTE_ERROR;
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}
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if (not string_to_mnc(std::string(plmn_str.begin() + 3, plmn_str.end()), &mnc_num)) {
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return SRSLTE_ERROR;
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}
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if (not mcc_to_bytes(mcc_num, &mcc[0])) {
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return SRSLTE_ERROR;
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}
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return mnc_to_bytes(mnc_num, &mnc[0], &nof_mnc_digits) ? SRSLTE_SUCCESS : SRSLTE_ERROR;
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}
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std::string plmn_id_t::to_string() const
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{
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std::string mcc_str, mnc_str;
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uint16_t mnc_num, mcc_num;
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bytes_to_mnc(&mnc[0], &mnc_num, nof_mnc_digits);
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bytes_to_mcc(&mcc[0], &mcc_num);
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mnc_to_string(mnc_num, &mnc_str);
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mcc_to_string(mcc_num, &mcc_str);
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return mcc_str + mnc_str;
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}
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void s_tmsi_t::from_asn1(const asn1::rrc::s_tmsi_s* asn1_type)
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{
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mmec = asn1_type->mmec.to_number();
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m_tmsi = asn1_type->m_tmsi.to_number();
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}
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void s_tmsi_t::to_asn1(asn1::rrc::s_tmsi_s* asn1_type) const
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{
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asn1_type->mmec.from_number(mmec);
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asn1_type->m_tmsi.from_number(m_tmsi);
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}
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static_assert((int)establishment_cause_t::nulltype == (int)asn1::rrc::establishment_cause_opts::nulltype,
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"Failed conversion of ASN1 type");
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std::string to_string(const establishment_cause_t& cause)
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{
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asn1::rrc::establishment_cause_e asn1_cause((asn1::rrc::establishment_cause_opts::options)cause);
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return asn1_cause.to_string();
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}
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} // namespace
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