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srsLTE
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Decoding correctly the NAS Attach request message now.

This commit is contained in:
Pedro Alvarez 2017-10-31 13:53:24 +00:00
parent ae18da83b2
commit 81827f891b
2 changed files with 24 additions and 7 deletions
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7
srsepc/hdr/mme/s1ap.h
View File

@ -73,9 +73,10 @@ public:
private:
s1ap_args_t m_s1ap_args;
uint32_t m_plmn;
srslte::log *m_s1ap_log;
s1ap_args_t m_s1ap_args;
uint32_t m_plmn;
srslte::byte_buffer_pool *m_pool;
srslte::log *m_s1ap_log;
hss *m_hss;
int m_s1mme;

24
srsepc/src/mme/s1ap.cc
View File

@ -52,6 +52,8 @@ s1ap::init(s1ap_args_t s1ap_args, srslte::log *s1ap_log)
m_hss = hss::get_instance();
m_pool = srslte::byte_buffer_pool::get_instance();
return 0;
}
@ -245,13 +247,27 @@ s1ap::handle_initial_ue_message(LIBLTE_S1AP_MESSAGE_INITIALUEMESSAGE_STRUCT *msg
LIBLTE_MME_PDN_CONNECTIVITY_REQUEST_MSG_STRUCT pdn_con_req;
/*Get NAS Attach Request Message*/
if(!liblte_mme_unpack_attach_request_msg((LIBLTE_BYTE_MSG_STRUCT *) msg->NAS_PDU.buffer, &attach_req)){
m_s1ap_log->console("Error unpacking NAS attach request.");
uint8_t pd, msg_type;
srslte::byte_buffer_t *nas_msg = m_pool->allocate();
memcpy(nas_msg->msg, &msg->NAS_PDU.buffer, msg->NAS_PDU.n_octets);
nas_msg->N_bytes = msg->NAS_PDU.n_octets;
liblte_mme_parse_msg_header((LIBLTE_BYTE_MSG_STRUCT *) nas_msg, &pd, &msg_type);
if(msg_type!=LIBLTE_MME_MSG_TYPE_ATTACH_REQUEST){
m_s1ap_log->error("Unhandled NAS message within the Initial UE message\n");
return false;
}
else{
m_s1ap_log->console("Unpacked NAS attach request.");
LIBLTE_ERROR_ENUM err = liblte_mme_unpack_attach_request_msg((LIBLTE_BYTE_MSG_STRUCT *) nas_msg, &attach_req);
if(err != LIBLTE_SUCCESS){
m_s1ap_log->console("Error unpacking NAS attach request. Error: %s\n", liblte_error_text[err]);
return false;
}
m_s1ap_log->console("Unpacked NAS attach request.\n");
if(attach_req.eps_mobile_id.type_of_id!=LIBLTE_MME_EPS_MOBILE_ID_TYPE_IMSI){
m_s1ap_log->warning("NAS Attach Request: Unhandle UE Id Type");
}