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srsRAN_4G
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Added nas log. Fixed gen_auth_info_anwser. Authentication is working again.

Browse Source
master
Pedro Alvarez 7 years ago
parent da840ac334
commit 4ba777c9c3
11 changed files with 74 additions and 63 deletions
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6
srsepc/hdr/hss/hss.h
Unescape Escape View File

@ -77,10 +77,10 @@ public:
int init(hss_args_t *hss_args, srslte::log_filter* hss_log);
void stop(void);
bool gen_auth_info_answer(uint64_t imsi, uint8_t *k_asme, uint8_t *autn, uint8_t *rand, uint8_t *xres);
bool gen_update_loc_answer(uint64_t imsi, uint8_t* qci);
virtual bool gen_auth_info_answer(uint64_t imsi, uint8_t *k_asme, uint8_t *autn, uint8_t *rand, uint8_t *xres);
virtual bool gen_update_loc_answer(uint64_t imsi, uint8_t* qci);
bool resync_sqn(uint64_t imsi, uint8_t *auts);
virtual bool resync_sqn(uint64_t imsi, uint8_t *auts);
private:

12
srsepc/hdr/mme/mme.h
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@ -44,15 +44,6 @@
namespace srsepc{
/*
typedef struct {
std::string s1ap_level;
std::string all_level;
int s1ap_hex_limit;
std::string filename;
}log_args_t;
*/
typedef struct{
s1ap_args_t s1ap_args;
//diameter_args_t diameter_args;
@ -66,7 +57,7 @@ class mme:
public:
static mme* get_instance(void);
static void cleanup(void);
int init(mme_args_t* args, srslte::log_filter *s1ap_log, srslte::log_filter *mme_gtpc_log, hss_interface_nas * hss);
int init(mme_args_t* args, srslte::log_filter *nas_log, srslte::log_filter *s1ap_log, srslte::log_filter *mme_gtpc_log, hss_interface_nas * hss);
void stop();
int get_s1_mme();
void run_thread();
@ -83,6 +74,7 @@ private:
srslte::byte_buffer_pool *m_pool;
/*Logs*/
srslte::log_filter *m_nas_log;
srslte::log_filter *m_s1ap_log;
srslte::log_filter *m_mme_gtpc_log;
};

9
srsepc/hdr/mme/mme_gtpc.h
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@ -39,6 +39,7 @@ class spgw;
class s1ap;
class mme_gtpc
: public gtpc_interface_nas
{
public:
@ -52,12 +53,12 @@ public:
bool init(srslte::log_filter *mme_gtpc_log);
uint32_t get_new_ctrl_teid();
void send_create_session_request(uint64_t imsi);
void handle_create_session_response(srslte::gtpc_pdu *cs_resp_pdu);
void send_modify_bearer_request(uint64_t imsi, uint16_t erab_to_modify, srslte::gtp_fteid_t *enb_fteid);
virtual bool send_create_session_request(uint64_t imsi);
bool handle_create_session_response(srslte::gtpc_pdu *cs_resp_pdu);
virtual bool send_modify_bearer_request(uint64_t imsi, uint16_t erab_to_modify, srslte::gtp_fteid_t *enb_fteid);
void handle_modify_bearer_response(srslte::gtpc_pdu *mb_resp_pdu);
void send_release_access_bearers_request(uint64_t imsi);
void send_delete_session_request(uint64_t imsi);
virtual bool send_delete_session_request(uint64_t imsi);
private:

1
srsepc/hdr/mme/nas.h
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@ -135,6 +135,7 @@ class nas
{
public:
nas();
void init(s1ap_interface_nas *s1ap, gtpc_interface_nas *gtpc, hss_interface_nas *hss, srslte::log *nas_log);
/*Initial UE messages*/
bool handle_nas_attach_request( uint32_t enb_ue_s1ap_id,

3
srsepc/hdr/mme/s1ap.h
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@ -63,7 +63,7 @@ public:
static void cleanup();
int enb_listen();
int init(s1ap_args_t s1ap_args, srslte::log_filter *s1ap_log, hss_interface_nas * hss_);
int init(s1ap_args_t s1ap_args, srslte::log_filter *s1ap_log, srslte::log_filter *nas_log, hss_interface_nas * hss_);
void stop();
int get_s1_mme();
@ -100,6 +100,7 @@ public:
s1ap_args_t m_s1ap_args;
srslte::log_filter *m_s1ap_log;
srslte::log_filter *m_nas_log;
s1ap_mngmt_proc* m_s1ap_mngmt_proc;
s1ap_nas_transport* m_s1ap_nas_transport;

14
srsepc/src/main.cc
Unescape Escape View File

@ -45,6 +45,8 @@ sig_int_handler(int signo){
}
typedef struct {
std::string nas_level;
int nas_hex_limit;
std::string s1ap_level;
int s1ap_hex_limit;
std::string gtpc_level;
@ -117,6 +119,8 @@ parse_args(all_args_t *args, int argc, char* argv[]) {
("pcap.enable", bpo::value<bool>(&args->mme_args.s1ap_args.pcap_enable)->default_value(false), "Enable S1AP PCAP")
("pcap.filename", bpo::value<string>(&args->mme_args.s1ap_args.pcap_filename)->default_value("/tmp/epc.pcap"), "PCAP filename")
("log.nas_level", bpo::value<string>(&args->log_args.nas_level), "MME NAS log level")
("log.nas_hex_limit", bpo::value<int>(&args->log_args.nas_hex_limit), "MME NAS log hex dump limit")
("log.s1ap_level", bpo::value<string>(&args->log_args.s1ap_level), "MME S1AP log level")
("log.s1ap_hex_limit", bpo::value<int>(&args->log_args.s1ap_hex_limit), "MME S1AP log hex dump limit")
("log.gtpc_level", bpo::value<string>(&args->log_args.gtpc_level), "MME GTPC log level")
@ -221,6 +225,9 @@ parse_args(all_args_t *args, int argc, char* argv[]) {
// Apply all_level to any unset layers
if (vm.count("log.all_level")) {
if(!vm.count("log.nas_level")) {
args->log_args.nas_level = args->log_args.all_level;
}
if(!vm.count("log.s1ap_level")) {
args->log_args.s1ap_level = args->log_args.all_level;
}
@ -303,6 +310,11 @@ main (int argc,char * argv[] )
logger = &logger_file;
}
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));
@ -331,7 +343,7 @@ main (int argc,char * argv[] )
}
mme *mme = mme::get_instance();
if (mme->init(&args.mme_args, &s1ap_log, &mme_gtpc_log, hss)) {
if (mme->init(&args.mme_args, &nas_log, &s1ap_log, &mme_gtpc_log, hss)) {
cout << "Error initializing MME" << endl;
exit(1);
}

26
srsepc/src/mme/mme.cc
Unescape Escape View File

@ -71,23 +71,24 @@ mme::cleanup(void)
}
int
mme::init(mme_args_t* args, srslte::log_filter *s1ap_log, srslte::log_filter *mme_gtpc_log, hss_interface_nas * hss)
mme::init(mme_args_t* args, srslte::log_filter *nas_log, srslte::log_filter *s1ap_log, srslte::log_filter *mme_gtpc_log, hss_interface_nas * hss)
{
/*Init logger*/
m_nas_log = nas_log;
m_s1ap_log = s1ap_log;
m_mme_gtpc_log = mme_gtpc_log;
/*Init S1AP*/
m_s1ap = s1ap::get_instance();
if(m_s1ap->init(args->s1ap_args, s1ap_log, hss)){
if (m_s1ap->init(args->s1ap_args, nas_log, s1ap_log, hss)) {
m_s1ap_log->error("Error initializing MME S1APP\n");
exit(-1);
}
/*Init GTP-C*/
m_mme_gtpc = mme_gtpc::get_instance();
if(!m_mme_gtpc->init(m_mme_gtpc_log))
{
if (!m_mme_gtpc->init(m_mme_gtpc_log)) {
m_s1ap_log->console("Error initializing GTP-C\n");
exit(-1);
}
@ -101,8 +102,7 @@ mme::init(mme_args_t* args, srslte::log_filter *s1ap_log, srslte::log_filter *mm
void
mme::stop()
{
if(m_running)
{
if (m_running) {
m_s1ap->stop();
m_s1ap->cleanup();
m_running = false;
@ -140,22 +140,17 @@ mme::run_thread()
}
else if (rd_sz == -1 && errno == EAGAIN){
m_s1ap_log->debug("Socket timeout reached");
}
else{
if(msg_flags & MSG_NOTIFICATION)
{
} else {
if (msg_flags & MSG_NOTIFICATION) {
//Received notification
union sctp_notification *notification = (union sctp_notification*)pdu->msg;
m_s1ap_log->debug("SCTP Notification %d\n", notification->sn_header.sn_type);
if (notification->sn_header.sn_type == SCTP_SHUTDOWN_EVENT)
{
if (notification->sn_header.sn_type == SCTP_SHUTDOWN_EVENT) {
m_s1ap_log->info("SCTP Association Shutdown. Association: %d\n",sri.sinfo_assoc_id);
m_s1ap_log->console("SCTP Association Shutdown. Association: %d\n",sri.sinfo_assoc_id);
m_s1ap->delete_enb_ctx(sri.sinfo_assoc_id);
}
}
else
{
} else {
//Received data
pdu->N_bytes = rd_sz;
m_s1ap_log->info("Received S1AP msg. Size: %d\n", pdu->N_bytes);
@ -165,5 +160,4 @@ mme::run_thread()
}
return;
}
} //namespace srsepc

47
srsepc/src/mme/mme_gtpc.cc
Unescape Escape View File

@ -91,7 +91,8 @@ mme_gtpc::get_new_ctrl_teid()
{
return m_next_ctrl_teid++; //FIXME Use a Id pool?
}
void
bool
mme_gtpc::send_create_session_request(uint64_t imsi)
{
m_mme_gtpc_log->info("Sending Create Session Request.\n");
@ -133,17 +134,13 @@ mme_gtpc::send_create_session_request(uint64_t imsi)
//Check whether this UE is already registed
std::map<uint64_t, struct gtpc_ctx>::iterator it = m_imsi_to_gtpc_ctx.find(imsi);
if(it != m_imsi_to_gtpc_ctx.end())
{
if (it != m_imsi_to_gtpc_ctx.end()) {
m_mme_gtpc_log->warning("Create Session Request being called for an UE with an active GTP-C connection.\n");
m_mme_gtpc_log->warning("Deleting previous GTP-C connection.\n");
std::map<uint32_t, uint64_t>::iterator jt = m_mme_ctr_teid_to_imsi.find(it->second.mme_ctr_fteid.teid);
if(jt == m_mme_ctr_teid_to_imsi.end())
{
if (jt == m_mme_ctr_teid_to_imsi.end()) {
m_mme_gtpc_log->error("Could not find IMSI from MME Ctrl TEID. MME Ctr TEID: %d\n", it->second.mme_ctr_fteid.teid);
}
else
{
} else {
m_mme_ctr_teid_to_imsi.erase(jt);
}
m_imsi_to_gtpc_ctx.erase(it);
@ -160,10 +157,10 @@ mme_gtpc::send_create_session_request(uint64_t imsi)
gtpc_ctx.mme_ctr_fteid = cs_req->sender_f_teid;
m_imsi_to_gtpc_ctx.insert(std::pair<uint64_t,gtpc_ctx_t>(imsi,gtpc_ctx));
m_spgw->handle_create_session_request(cs_req, &cs_resp_pdu);
return true;
}
void
bool
mme_gtpc::handle_create_session_response(srslte::gtpc_pdu *cs_resp_pdu)
{
struct srslte::gtpc_create_session_response *cs_resp = & cs_resp_pdu->choice.create_session_response;
@ -172,19 +169,19 @@ mme_gtpc::handle_create_session_response(srslte::gtpc_pdu *cs_resp_pdu)
if (cs_resp_pdu->header.type != srslte::GTPC_MSG_TYPE_CREATE_SESSION_RESPONSE) {
m_mme_gtpc_log->warning("Could not create GTPC session. Not a create session response\n");
//TODO Handle error
return;
return false;
}
if (cs_resp->cause.cause_value != srslte::GTPC_CAUSE_VALUE_REQUEST_ACCEPTED) {
m_mme_gtpc_log->warning("Could not create GTPC session. Create Session Request not accepted\n");
//TODO Handle error
return;
return false;
}
//Get IMSI from the control TEID
std::map<uint32_t,uint64_t>::iterator id_it = m_mme_ctr_teid_to_imsi.find(cs_resp_pdu->header.teid);
if(id_it == m_mme_ctr_teid_to_imsi.end()) {
m_mme_gtpc_log->warning("Could not find IMSI from Ctrl TEID.\n");
return;
return false;
}
uint64_t imsi = id_it->second;
@ -198,7 +195,7 @@ mme_gtpc::handle_create_session_response(srslte::gtpc_pdu *cs_resp_pdu)
//Get S-GW S1-u F-TEID
if (cs_resp->eps_bearer_context_created.s1_u_sgw_f_teid_present == false){
m_mme_gtpc_log->error("Did not receive SGW S1-U F-TEID in create session response\n");
return;
return false;
}
m_mme_gtpc_log->console("Create Session Response -- SPGW control TEID %d\n", sgw_ctr_fteid.teid);
m_mme_gtpc_log->info("Create Session Response -- SPGW control TEID %d\n", sgw_ctr_fteid.teid);
@ -210,18 +207,18 @@ mme_gtpc::handle_create_session_response(srslte::gtpc_pdu *cs_resp_pdu)
//Check UE Ipv4 address was allocated
if (cs_resp->paa_present != true) {
m_mme_gtpc_log->error("PDN Adress Allocation not present\n");
return;
return false;
}
if (cs_resp->paa.pdn_type != srslte::GTPC_PDN_TYPE_IPV4) {
m_mme_gtpc_log->error("IPv6 not supported yet\n");
return;
return false;
}
//Save create session response info to E-RAB context
nas *nas_ctx = m_s1ap->find_nas_ctx_from_imsi(imsi);
if(nas_ctx == NULL){
m_mme_gtpc_log->error("Could not find UE context. IMSI %015lu\n", imsi);
return;
return false;
}
emm_ctx_t *emm_ctx = &nas_ctx->m_emm_ctx;
ecm_ctx_t *ecm_ctx = &nas_ctx->m_ecm_ctx;
@ -234,7 +231,7 @@ mme_gtpc::handle_create_session_response(srslte::gtpc_pdu *cs_resp_pdu)
if(it_g == m_imsi_to_gtpc_ctx.end()) {
//Could not find GTP-C Context
m_mme_gtpc_log->error("Could not find GTP-C context\n");
return;
return false;
}
gtpc_ctx_t *gtpc_ctx = &it_g->second;
gtpc_ctx->sgw_ctr_fteid = sgw_ctr_fteid;
@ -246,11 +243,11 @@ mme_gtpc::handle_create_session_response(srslte::gtpc_pdu *cs_resp_pdu)
esm_ctx->pdn_addr_alloc= cs_resp->paa;
esm_ctx->sgw_s1u_fteid = cs_resp->eps_bearer_context_created.s1_u_sgw_f_teid;
m_s1ap->m_s1ap_ctx_mngmt_proc->send_initial_context_setup_request(nas_ctx, default_bearer);
return;
return true;
}
void
bool
mme_gtpc::send_modify_bearer_request(uint64_t imsi, uint16_t erab_to_modify, srslte::gtp_fteid_t *enb_fteid)
{
m_mme_gtpc_log->info("Sending GTP-C Modify bearer request\n");
@ -259,7 +256,7 @@ mme_gtpc::send_modify_bearer_request(uint64_t imsi, uint16_t erab_to_modify, srs
std::map<uint64_t,gtpc_ctx_t>::iterator it = m_imsi_to_gtpc_ctx.find(imsi);
if (it == m_imsi_to_gtpc_ctx.end()) {
m_mme_gtpc_log->error("Modify bearer request for UE without GTP-C connection\n");
return;
return false;
}
srslte::gtp_fteid_t sgw_ctr_fteid = it->second.sgw_ctr_fteid;
@ -282,7 +279,7 @@ mme_gtpc::send_modify_bearer_request(uint64_t imsi, uint16_t erab_to_modify, srs
srslte::gtpc_pdu mb_resp_pdu;
m_spgw->handle_modify_bearer_request(&mb_req_pdu,&mb_resp_pdu);
handle_modify_bearer_response(&mb_resp_pdu);
return;
return true;
}
void
@ -302,7 +299,7 @@ mme_gtpc::handle_modify_bearer_response(srslte::gtpc_pdu *mb_resp_pdu)
return;
}
void
bool
mme_gtpc::send_delete_session_request(uint64_t imsi)
{
m_mme_gtpc_log->info("Sending GTP-C Delete Session Request request. IMSI %" PRIu64 "\n",imsi);
@ -314,7 +311,7 @@ mme_gtpc::send_delete_session_request(uint64_t imsi)
std::map<uint64_t,gtpc_ctx_t>::iterator it_ctx = m_imsi_to_gtpc_ctx.find(imsi);
if (it_ctx == m_imsi_to_gtpc_ctx.end()) {
m_mme_gtpc_log->error("Could not find GTP-C context to remove\n");
return;
return false;
}
sgw_ctr_fteid = it_ctx->second.sgw_ctr_fteid;
@ -341,7 +338,7 @@ mme_gtpc::send_delete_session_request(uint64_t imsi)
m_mme_ctr_teid_to_imsi.erase(it_imsi);
}
m_imsi_to_gtpc_ctx.erase(it_ctx);
return;
return true;
}
void

13
srsepc/src/mme/nas.cc
Unescape Escape View File

@ -39,6 +39,17 @@ nas::nas() {
m_pool = srslte::byte_buffer_pool::get_instance();
}
void
nas::init(s1ap_interface_nas *s1ap,
gtpc_interface_nas *gtpc,
hss_interface_nas *hss,
srslte::log *nas_log)
{
m_s1ap = s1ap;
m_gtpc = gtpc;
m_hss = hss;
m_nas_log = nas_log;
}
/*******************************
*
* Handle UE Initiating Messages
@ -261,7 +272,7 @@ nas::handle_identity_response(srslte::byte_buffer_t *nas_msg, srslte::byte_buffe
m_emm_ctx.imsi=imsi;
//Get Authentication Vectors from HSS
if (!m_hss->gen_auth_info_answer(imsi, m_sec_ctx.k_asme, autn, rand, m_sec_ctx.xres)) {
if (!m_hss->gen_auth_info_answer(imsi, m_sec_ctx.k_asme, m_sec_ctx.autn, m_sec_ctx.rand, m_sec_ctx.xres)) {
m_nas_log->console("User not found. IMSI %015lu\n",imsi);
m_nas_log->info("User not found. IMSI %015lu\n",imsi);
return false;

3
srsepc/src/mme/s1ap.cc
Unescape Escape View File

@ -72,7 +72,7 @@ s1ap::cleanup(void)
}
int
s1ap::init(s1ap_args_t s1ap_args, srslte::log_filter *s1ap_log, hss_interface_nas * hss)
s1ap::init(s1ap_args_t s1ap_args, srslte::log_filter *nas_log, srslte::log_filter *s1ap_log, hss_interface_nas * hss)
{
m_pool = srslte::byte_buffer_pool::get_instance();
@ -80,6 +80,7 @@ s1ap::init(s1ap_args_t s1ap_args, srslte::log_filter *s1ap_log, hss_interface_na
srslte::s1ap_mccmnc_to_plmn(s1ap_args.mcc, s1ap_args.mnc, &m_plmn);
m_next_m_tmsi = rand();
//Init log
m_nas_log = nas_log;
m_s1ap_log = s1ap_log;
//Get pointer to the HSS

1
srsepc/src/mme/s1ap_nas_transport.cc
Unescape Escape View File

@ -496,6 +496,7 @@ s1ap_nas_transport::handle_nas_guti_attach_request( uint32_t enb_ue_s1ap_id,
m_s1ap_log->info("Attach Request -- Could not find M-TMSI 0x%x\n", m_tmsi);
nas *nas_ctx = new nas;
nas_ctx->init(m_s1ap, m_mme_gtpc, m_hss, m_s1ap->m_nas_log);
emm_ctx_t *emm_ctx = &nas_ctx->m_emm_ctx;
ecm_ctx_t *ecm_ctx = &nas_ctx->m_ecm_ctx;
sec_ctx_t *sec_ctx = &nas_ctx->m_sec_ctx;

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