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srsRAN_4G/srsue/test/upper/nas_test.cc

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/**
* Copyright 2013-2021 Software Radio Systems Limited
*
* This file is part of srsLTE.
*
* srsLTE is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of
* the License, or (at your option) any later version.
*
* srsLTE is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* A copy of the GNU Affero General Public License can be found in
* the LICENSE file in the top-level directory of this distribution
* and at http://www.gnu.org/licenses/.
*
*/
#include "srslte/common/bcd_helpers.h"
#include "srslte/common/log_filter.h"
#include "srslte/common/logger_srslog_wrapper.h"
#include "srslte/common/logmap.h"
#include "srslte/common/test_common.h"
#include "srslte/interfaces/ue_interfaces.h"
#include "srslte/srslog/srslog.h"
#include "srslte/test/ue_test_interfaces.h"
#include "srslte/upper/pdcp.h"
#include "srslte/upper/pdcp_entity_lte.h"
#include "srslte/upper/rlc.h"
#include "srsue/hdr/stack/mac/mac.h"
#include "srsue/hdr/stack/rrc/rrc.h"
#include "srsue/hdr/stack/upper/gw.h"
#include "srsue/hdr/stack/upper/nas.h"
#include "srsue/hdr/stack/upper/usim.h"
#include "srsue/hdr/stack/upper/usim_base.h"
#include <iostream>
using namespace srsue;
using namespace asn1::rrc;
static_assert(alignof(LIBLTE_BYTE_MSG_STRUCT) == alignof(byte_buffer_t),
"liblte buffer and byte buffer members misaligned");
static_assert(offsetof(LIBLTE_BYTE_MSG_STRUCT, N_bytes) == offsetof(byte_buffer_t, N_bytes),
"liblte buffer and byte buffer members misaligned");
static_assert(offsetof(LIBLTE_BYTE_MSG_STRUCT, header) == offsetof(byte_buffer_t, buffer),
"liblte buffer and byte buffer members misaligned");
static_assert(sizeof(LIBLTE_BYTE_MSG_STRUCT) <= offsetof(byte_buffer_t, msg),
"liblte buffer and byte buffer members misaligned");
#define LCID 1
uint8_t auth_request_pdu[] = {0x07, 0x52, 0x01, 0x0c, 0x63, 0xa8, 0x54, 0x13, 0xe6, 0xa4, 0xce, 0xd9,
0x86, 0xfb, 0xe5, 0xce, 0x9b, 0x62, 0x5e, 0x10, 0x67, 0x57, 0xb3, 0xc2,
0xb9, 0x70, 0x90, 0x01, 0x0c, 0x72, 0x8a, 0x67, 0x57, 0x92, 0x52, 0xb8};
uint8_t sec_mode_command_pdu[] = {0x37, 0x4e, 0xfd, 0x57, 0x11, 0x00, 0x07, 0x5d, 0x02, 0x01, 0x02, 0xf0, 0x70, 0xc1};
uint8_t attach_accept_pdu[] = {0x27, 0x00, 0x00, 0x00, 0x00, 0x00, 0x07, 0x42, 0x01, 0x3e, 0x06, 0x00, 0x00,
0xf1, 0x10, 0x00, 0x01, 0x00, 0x2a, 0x52, 0x01, 0xc1, 0x01, 0x04, 0x1b, 0x07,
0x74, 0x65, 0x73, 0x74, 0x31, 0x32, 0x33, 0x06, 0x6d, 0x6e, 0x63, 0x30, 0x30,
0x31, 0x06, 0x6d, 0x63, 0x63, 0x30, 0x30, 0x31, 0x04, 0x67, 0x70, 0x72, 0x73,
0x05, 0x01, 0xc0, 0xa8, 0x05, 0x02, 0x27, 0x01, 0x80, 0x50, 0x0b, 0xf6, 0x00,
0xf1, 0x10, 0x80, 0x01, 0x01, 0x35, 0x16, 0x6d, 0xbc, 0x64, 0x01, 0x00};
uint8_t esm_info_req_pdu[] = {0x27, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x5a, 0xd9};
uint8_t activate_dedicated_eps_bearer_pdu[] = {0x27, 0x00, 0x00, 0x00, 0x00, 0x00, 0x62, 0x00, 0xc5, 0x05,
0x01, 0x01, 0x07, 0x21, 0x31, 0x00, 0x03, 0x40, 0x08, 0xae,
0x5d, 0x02, 0x00, 0xc2, 0x81, 0x34, 0x01, 0x4d};
uint8_t deactivate_eps_bearer_pdu[] = {0x27, 0x00, 0x00, 0x00, 0x00, 0x00, 0x62, 0x00, 0xcd, 0x24};
uint16 mcc = 61441;
uint16 mnc = 65281;
static srslte::logger* g_logger = nullptr;
using namespace srslte;
namespace srslte {
// fake classes
class pdcp_dummy : public rrc_interface_pdcp, public pdcp_interface_gw
{
public:
void write_pdu(uint32_t lcid, unique_byte_buffer_t pdu) {}
void write_pdu_bcch_bch(unique_byte_buffer_t pdu) {}
void write_pdu_bcch_dlsch(unique_byte_buffer_t pdu) {}
void write_pdu_pcch(unique_byte_buffer_t pdu) {}
void write_pdu_mch(uint32_t lcid, srslte::unique_byte_buffer_t sdu) {}
std::string get_rb_name(uint32_t lcid) { return std::string("lcid"); }
void write_sdu(uint32_t lcid, srslte::unique_byte_buffer_t sdu) {}
bool is_lcid_enabled(uint32_t lcid) { return false; }
};
class rrc_dummy : public rrc_interface_nas
{
public:
rrc_dummy() : last_sdu_len(0)
{
plmns[0].plmn_id.from_number(mcc, mnc);
plmns[0].tac = 0xffff;
}
void init(nas* nas_) { nas_ptr = nas_; }
void write_sdu(unique_byte_buffer_t sdu)
{
last_sdu_len = sdu->N_bytes;
// printf("NAS generated SDU (len=%d):\n", sdu->N_bytes);
// srslte_vec_fprint_byte(stdout, sdu->msg, sdu->N_bytes);
}
std::string get_rb_name(uint32_t lcid) { return std::string("lcid"); }
uint32_t get_last_sdu_len() { return last_sdu_len; }
void reset() { last_sdu_len = 0; }
bool plmn_search()
{
nas_ptr->plmn_search_completed(plmns, 1);
return true;
}
void plmn_select(srslte::plmn_id_t plmn_id){};
void set_ue_identity(srslte::s_tmsi_t s_tmsi) {}
bool connection_request(srslte::establishment_cause_t cause, srslte::unique_byte_buffer_t sdu)
{
printf("NAS generated SDU (len=%d):\n", sdu->N_bytes);
last_sdu_len = sdu->N_bytes;
srslte_vec_fprint_byte(stdout, sdu->msg, sdu->N_bytes);
is_connected_flag = true;
nas_ptr->connection_request_completed(true);
return true;
}
bool is_connected() { return is_connected_flag; }
uint16_t get_mcc() { return mcc; }
uint16_t get_mnc() { return mnc; }
void enable_capabilities() {}
uint32_t get_lcid_for_eps_bearer(const uint32_t& eps_bearer_id) { return 0; }
void paging_completed(bool outcome) {}
bool has_nr_dc() { return false; }
private:
nas* nas_ptr;
uint32_t last_sdu_len;
found_plmn_t plmns[rrc_interface_nas::MAX_FOUND_PLMNS];
bool is_connected_flag = false;
};
class test_stack_dummy : public srsue::stack_test_dummy, public stack_interface_gw, public thread
{
public:
test_stack_dummy(pdcp_interface_gw* pdcp_) : pdcp(pdcp_), thread("DUMMY STACK") {}
void init(srsue::nas* nas_)
{
nas = nas_;
start(-1);
}
bool switch_on() { return true; }
void write_sdu(uint32_t lcid, srslte::unique_byte_buffer_t sdu) { pdcp->write_sdu(lcid, std::move(sdu)); }
bool is_lcid_enabled(uint32_t lcid) { return pdcp->is_lcid_enabled(lcid); }
bool is_registered() { return true; }
bool start_service_request() { return true; }
void run_thread()
{
std::unique_lock<std::mutex> lk(init_mutex);
running = true;
init_cv.notify_all();
lk.unlock();
while (running) {
task_sched.tic();
task_sched.run_pending_tasks();
nas->run_tti();
}
}
void stop()
{
std::unique_lock<std::mutex> lk(init_mutex);
while (not running) {
init_cv.wait(lk);
}
running = false;
wait_thread_finish();
}
pdcp_interface_gw* pdcp = nullptr;
srsue::nas* nas = nullptr;
bool running = false;
std::mutex init_mutex;
std::condition_variable init_cv;
};
class gw_dummy : public gw_interface_nas, public gw_interface_pdcp
{
int setup_if_addr(uint32_t eps_bearer_id,
uint32_t lcid,
uint8_t pdn_type,
uint32_t ip_addr,
uint8_t* ipv6_if_id,
char* err_str)
{
return SRSLTE_SUCCESS;
}
int apply_traffic_flow_template(const uint8_t& eps_bearer_id,
const uint8_t& lcid,
const LIBLTE_MME_TRAFFIC_FLOW_TEMPLATE_STRUCT* tft)
{
return SRSLTE_SUCCESS;
}
void write_pdu(uint32_t lcid, unique_byte_buffer_t pdu) {}
void write_pdu_mch(uint32_t lcid, srslte::unique_byte_buffer_t sdu) {}
void set_test_loop_mode(const test_loop_mode_state_t mode, const uint32_t ip_pdu_delay_ms = 0) {}
};
} // namespace srslte
int security_command_test()
{
int ret = SRSLTE_ERROR;
srslte::log_filter rrc_log("RRC");
srslte::log_filter mac_log("MAC");
srslte::log_filter usim_log("USIM");
rrc_log.set_level(srslte::LOG_LEVEL_DEBUG);
rrc_log.set_hex_limit(100000);
stack_test_dummy stack;
rrc_dummy rrc_dummy;
gw_dummy gw;
usim_args_t args;
args.algo = "xor";
args.imei = "353490069873319";
args.imsi = "001010123456789";
args.k = "00112233445566778899aabbccddeeff";
args.op = "63BFA50EE6523365FF14C1F45F88737D";
args.using_op = true;
// init USIM
srsue::usim usim(srslog::fetch_basic_logger("USIM"));
usim.init(&args);
{
srsue::nas nas(&stack.task_sched);
nas_args_t cfg;
cfg.eia = "1,2,3";
cfg.eea = "0,1,2,3";
nas.init(&usim, &rrc_dummy, &gw, cfg);
rrc_dummy.init(&nas);
// push auth request PDU to NAS to generate security context
byte_buffer_pool* pool = byte_buffer_pool::get_instance();
unique_byte_buffer_t tmp = srslte::make_byte_buffer();
memcpy(tmp->msg, auth_request_pdu, sizeof(auth_request_pdu));
tmp->N_bytes = sizeof(auth_request_pdu);
nas.write_pdu(LCID, std::move(tmp));
// TODO: add check for authentication response
rrc_dummy.reset();
// reuse buffer for security mode command
tmp = srslte::make_byte_buffer();
memcpy(tmp->msg, sec_mode_command_pdu, sizeof(sec_mode_command_pdu));
tmp->N_bytes = sizeof(sec_mode_command_pdu);
nas.write_pdu(LCID, std::move(tmp));
// check length of generated NAS SDU
if (rrc_dummy.get_last_sdu_len() > 3) {
ret = SRSLTE_SUCCESS;
}
}
return ret;
}
int mme_attach_request_test()
{
int ret = SRSLTE_ERROR;
srslte::log_filter rrc_log("RRC");
srslte::log_filter mac_log("MAC");
srslte::log_filter usim_log("USIM");
srslte::log_filter gw_log("GW");
rrc_log.set_level(srslte::LOG_LEVEL_DEBUG);
usim_log.set_level(srslte::LOG_LEVEL_DEBUG);
gw_log.set_level(srslte::LOG_LEVEL_DEBUG);
rrc_log.set_hex_limit(100000);
usim_log.set_hex_limit(100000);
gw_log.set_hex_limit(100000);
rrc_dummy rrc_dummy;
pdcp_dummy pdcp_dummy;
srsue::usim usim(srslog::fetch_basic_logger("USIM"));
usim_args_t args;
args.mode = "soft";
args.algo = "xor";
args.imei = "353490069873319";
args.imsi = "001010123456789";
args.k = "00112233445566778899aabbccddeeff";
args.op = "63BFA50EE6523365FF14C1F45F88737D";
usim.init(&args);
{
nas_args_t nas_cfg;
nas_cfg.force_imsi_attach = true;
nas_cfg.apn_name = "test123";
test_stack_dummy stack(&pdcp_dummy);
srsue::nas nas(&stack.task_sched);
srsue::gw gw;
nas.init(&usim, &rrc_dummy, &gw, nas_cfg);
rrc_dummy.init(&nas);
gw_args_t gw_args;
gw_args.tun_dev_name = "tun0";
gw_args.log.gw_level = "debug";
gw_args.log.gw_hex_limit = 100000;
gw.init(gw_args, g_logger, &stack);
stack.init(&nas);
// trigger test
stack.switch_on();
stack.stop();
// this will time out in the first place
// reset length of last received NAS PDU
rrc_dummy.reset();
// finally push attach accept
byte_buffer_pool* pool = byte_buffer_pool::get_instance();
unique_byte_buffer_t tmp = srslte::make_byte_buffer();
memcpy(tmp->msg, attach_accept_pdu, sizeof(attach_accept_pdu));
tmp->N_bytes = sizeof(attach_accept_pdu);
nas.write_pdu(LCID, std::move(tmp));
nas_metrics_t metrics;
nas.get_metrics(&metrics);
TESTASSERT(metrics.nof_active_eps_bearer == 1);
// check length of generated NAS SDU (attach complete)
if (rrc_dummy.get_last_sdu_len() > 3) {
ret = SRSLTE_SUCCESS;
}
// ensure buffers are deleted before pool cleanup
gw.stop();
}
return ret;
}
int esm_info_request_test()
{
int ret = SRSLTE_ERROR;
srslte::log_filter rrc_log("RRC");
srslte::log_filter mac_log("MAC");
srslte::log_filter usim_log("USIM");
rrc_log.set_level(srslte::LOG_LEVEL_DEBUG);
rrc_log.set_hex_limit(100000);
srsue::stack_test_dummy stack{};
rrc_dummy rrc_dummy;
gw_dummy gw;
usim_args_t args;
args.algo = "xor";
args.imei = "353490069873319";
args.imsi = "001010123456789";
args.k = "00112233445566778899aabbccddeeff";
args.op = "63BFA50EE6523365FF14C1F45F88737D";
// init USIM
srsue::usim usim(srslog::fetch_basic_logger("USIM"));
usim.init(&args);
{
srsue::nas nas(&stack.task_sched);
nas_args_t cfg;
cfg.apn_name = "srslte";
cfg.apn_user = "srsuser";
cfg.apn_pass = "srspass";
cfg.force_imsi_attach = true;
nas.init(&usim, &rrc_dummy, &gw, cfg);
// push ESM info request PDU to NAS to generate response
unique_byte_buffer_t tmp = srslte::make_byte_buffer();
memcpy(tmp->msg, esm_info_req_pdu, sizeof(esm_info_req_pdu));
tmp->N_bytes = sizeof(esm_info_req_pdu);
nas.write_pdu(LCID, std::move(tmp));
// check length of generated NAS SDU
if (rrc_dummy.get_last_sdu_len() > 3) {
ret = SRSLTE_SUCCESS;
}
}
return ret;
}
int dedicated_eps_bearer_test()
{
srslte::log_filter rrc_log("RRC");
srslte::log_filter mac_log("MAC");
srslte::log_filter usim_log("USIM");
rrc_log.set_level(srslte::LOG_LEVEL_DEBUG);
rrc_log.set_hex_limit(100000);
srsue::stack_test_dummy stack;
rrc_dummy rrc_dummy;
gw_dummy gw;
usim_args_t args;
args.algo = "xor";
args.imei = "353490069873319";
args.imsi = "001010123456789";
args.k = "00112233445566778899aabbccddeeff";
args.op = "63BFA50EE6523365FF14C1F45F88737D";
// init USIM
srsue::usim usim(srslog::fetch_basic_logger("USIM"));
usim.init(&args);
srsue::nas nas(&stack.task_sched);
nas_args_t cfg = {};
cfg.force_imsi_attach = true; // make sure we get a fresh security context
nas.init(&usim, &rrc_dummy, &gw, cfg);
// push dedicated EPS bearer PDU to NAS
unique_byte_buffer_t tmp = srslte::make_byte_buffer();
memcpy(tmp->msg, activate_dedicated_eps_bearer_pdu, sizeof(activate_dedicated_eps_bearer_pdu));
tmp->N_bytes = sizeof(activate_dedicated_eps_bearer_pdu);
nas.write_pdu(LCID, std::move(tmp));
// This should fail since no default bearer has been created yet
nas_metrics_t metrics;
nas.get_metrics(&metrics);
TESTASSERT(metrics.nof_active_eps_bearer == 0);
// add default EPS beaerer
unique_byte_buffer_t attach_with_default_bearer = srslte::make_byte_buffer();
memcpy(attach_with_default_bearer->msg, attach_accept_pdu, sizeof(attach_accept_pdu));
attach_with_default_bearer->N_bytes = sizeof(attach_accept_pdu);
nas.write_pdu(LCID, std::move(attach_with_default_bearer));
// This should fail since no default bearer has been created yet
nas.get_metrics(&metrics);
TESTASSERT(metrics.nof_active_eps_bearer == 1);
// push dedicated bearer activation and check that it was added
tmp = srslte::make_byte_buffer();
memcpy(tmp->msg, activate_dedicated_eps_bearer_pdu, sizeof(activate_dedicated_eps_bearer_pdu));
tmp->N_bytes = sizeof(activate_dedicated_eps_bearer_pdu);
nas.write_pdu(LCID, std::move(tmp));
nas.get_metrics(&metrics);
TESTASSERT(metrics.nof_active_eps_bearer == 2);
// tear-down dedicated bearer
tmp = srslte::make_byte_buffer();
memcpy(tmp->msg, deactivate_eps_bearer_pdu, sizeof(deactivate_eps_bearer_pdu));
tmp->N_bytes = sizeof(deactivate_eps_bearer_pdu);
nas.write_pdu(LCID, std::move(tmp));
nas.get_metrics(&metrics);
TESTASSERT(metrics.nof_active_eps_bearer == 1);
// try to tear-down dedicated bearer again
tmp = srslte::make_byte_buffer();
memcpy(tmp->msg, deactivate_eps_bearer_pdu, sizeof(deactivate_eps_bearer_pdu));
tmp->N_bytes = sizeof(deactivate_eps_bearer_pdu);
nas.write_pdu(LCID, std::move(tmp));
nas.get_metrics(&metrics);
TESTASSERT(metrics.nof_active_eps_bearer == 1);
return SRSLTE_SUCCESS;
}
int main(int argc, char** argv)
{
// Setup logging.
srslog::sink& log_sink = srslog::fetch_stdout_sink();
srslog::log_channel* chan = srslog::create_log_channel("mme_attach_request_test", log_sink);
srslte::srslog_wrapper log_wrapper(*chan);
g_logger = &log_wrapper;
auto& rrc_logger = srslog::fetch_basic_logger("RRC", false);
rrc_logger.set_level(srslog::basic_levels::debug);
rrc_logger.set_hex_dump_max_size(100000);
auto& nas_logger = srslog::fetch_basic_logger("NAS", false);
nas_logger.set_level(srslog::basic_levels::debug);
nas_logger.set_hex_dump_max_size(100000);
auto& usim_logger = srslog::fetch_basic_logger("USIM", false);
usim_logger.set_level(srslog::basic_levels::debug);
usim_logger.set_hex_dump_max_size(100000);
auto& gw_logger = srslog::fetch_basic_logger("GW", false);
gw_logger.set_level(srslog::basic_levels::debug);
gw_logger.set_hex_dump_max_size(100000);
// Start the log backend.
srslog::init();
srslte::logmap::set_default_log_level(LOG_LEVEL_DEBUG);
srslte::logmap::set_default_hex_limit(100000);
if (security_command_test()) {
printf("Security command test failed.\n");
return -1;
}
if (mme_attach_request_test()) {
printf("Attach request test failed.\n");
return -1;
}
if (esm_info_request_test()) {
printf("ESM info request test failed.\n");
return -1;
}
if (dedicated_eps_bearer_test()) {
printf("Dedicated EPS bearer test failed.\n");
return -1;
}
return 0;
}
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