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srsLTE
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Added a function to handle the security mode complete.

This commit is contained in:
Pedro Alvarez 2017-11-08 18:44:27 +00:00
parent a77308b4b8
commit c049069346
2 changed files with 35 additions and 0 deletions
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3
srsepc/hdr/mme/s1ap.h
View File

@ -74,6 +74,9 @@ public:
bool handle_nas_authentication_response(srslte::byte_buffer_t *nas_buffer, srslte::byte_buffer_t *reply_buffer, ue_ctx_t *ue_ctx);
bool handle_nas_security_mode_complete(srslte::byte_buffer_t *nas_msg, srslte::byte_buffer_t *reply_msg, ue_ctx_t *ue_ctx);
void print_enb_ctx_info(const enb_ctx_t &enb_ctx);
private:

32
srsepc/src/mme/s1ap.cc
View File

@ -353,6 +353,8 @@ s1ap::handle_uplink_nas_transport(LIBLTE_S1AP_MESSAGE_UPLINKNASTRANSPORT_STRUCT
break;
case LIBLTE_MME_MSG_TYPE_SECURITY_MODE_COMPLETE:
m_s1ap_log->info("UL NAS: Received Security Mode Complete\n");
handle_nas_security_mode_complete(nas_msg, reply_msg, ue_ctx);
return true; //no need for reply. FIXME this should be better structured...
break;
default:
m_s1ap_log->info("Unhandled NAS message");
@ -418,6 +420,36 @@ s1ap::handle_nas_authentication_response(srslte::byte_buffer_t *nas_msg, srslte:
return true;
}
bool
s1ap::handle_nas_security_mode_complete(srslte::byte_buffer_t *nas_msg, srslte::byte_buffer_t *reply_msg, ue_ctx_t *ue_ctx)
{
/*
typedef struct{
LIBLTE_MME_MOBILE_ID_STRUCT imeisv;
bool imeisv_present;
}LIBLTE_MME_SECURITY_MODE_COMPLETE_MSG_STRUCT;
*/
LIBLTE_MME_SECURITY_MODE_COMPLETE_MSG_STRUCT sm_comp;
//Get NAS authentication response
LIBLTE_ERROR_ENUM err = liblte_mme_unpack_security_mode_complete_msg((LIBLTE_BYTE_MSG_STRUCT *) nas_msg, &sm_comp);
if(err != LIBLTE_SUCCESS){
m_s1ap_log->error("Error unpacking NAS authentication response. Error: %s\n", liblte_error_text[err]);
return false;
}
//TODO Check integrity
//TODO Handle imeisv
if(sm_comp.imeisv_present)
{
m_s1ap_log->warning("IMEI-SV present but not handled");
}
m_s1ap_log->console("Received Security Mode Command Complete. IMSI: %lu\n", ue_ctx->imsi);
return true;
}
void
s1ap::print_enb_ctx_info(const enb_ctx_t &enb_ctx)
{