From 70f3bcaebad601bd7055d4c8cb65a78b9bf9fca1 Mon Sep 17 00:00:00 2001 From: Pedro Alvarez Date: Wed, 25 Oct 2017 19:17:36 +0100 Subject: [PATCH] Starting to parse NAS Attach Request message to get IMSI --- srsepc/hdr/mme/s1ap.h | 5 ++- srsepc/src/mme/s1ap.cc | 80 +++++++++++++++++++++++++++++++++++++++++- 2 files changed, 83 insertions(+), 2 deletions(-) diff --git a/srsepc/hdr/mme/s1ap.h b/srsepc/hdr/mme/s1ap.h index 4280cf622..0355e0cda 100644 --- a/srsepc/hdr/mme/s1ap.h +++ b/srsepc/hdr/mme/s1ap.h @@ -27,6 +27,7 @@ #define S1AP_H #include "srslte/asn1/liblte_s1ap.h" +#include "srslte/asn1/liblte_mme.h" #include "srslte/common/common.h" #include "srslte/common/log.h" @@ -64,7 +65,9 @@ public: bool send_s1_setup_failure(struct sctp_sndrcvinfo *enb_sri); bool send_s1_setup_response(struct sctp_sndrcvinfo *enb_sri); - + + bool handle_initial_ue_message(LIBLTE_S1AP_MESSAGE_INITIALUEMESSAGE_STRUCT *msg, struct sctp_sndrcvinfo *enb_sri); + void print_enb_ctx_info(const enb_ctx_t &enb_ctx); private: diff --git a/srsepc/src/mme/s1ap.cc b/srsepc/src/mme/s1ap.cc index 7b2074031..717c374c0 100644 --- a/srsepc/src/mme/s1ap.cc +++ b/srsepc/src/mme/s1ap.cc @@ -231,7 +231,85 @@ s1ap::handle_s1_setup_request(LIBLTE_S1AP_MESSAGE_S1SETUPREQUEST_STRUCT *msg, st bool s1ap::handle_initial_ue_message(LIBLTE_S1AP_MESSAGE_INITIALUEMESSAGE_STRUCT *msg, struct sctp_sndrcvinfo *enb_sri) { - + m_s1ap_log->console("Received Initial UE Message\n"); + m_s1ap_log->info("Received Initial UE Message\n"); + + //msg->eNB_UE_S1AP_ID; + + LIBLTE_MME_ATTACH_REQUEST_MSG_STRUCT attach_req; + + if(!liblte_mme_pack_attach_request_msg(&attach_req, (LIBLTE_BYTE_MSG_STRUCT *) &msg->NAS_PDU.buffer)) + { + m_s1ap_log->console("Error unpacking NAS attach request."); + } + else{ + m_s1ap_log->console("Unpacked NAS attach request."); + } + /*Log unhandled IEs*/ + if(msg->S_TMSI_present){ + m_s1ap_log->warning("S-TMSI present, but not handled."); + } + if(msg->CSG_Id_present){ + m_s1ap_log->warning("S-TMSI present, but not handled."); + } + if(msg->GUMMEI_ID_present){ + m_s1ap_log->warning("GUMMEI ID present, but not handled."); + } + if(msg->CellAccessMode_present){ + m_s1ap_log->warning("Cell Access Mode present, but not handled."); + } + if(msg->GW_TransportLayerAddress_present){ + m_s1ap_log->warning("GW Transport Layer present, but not handled."); + } + if(msg->GW_TransportLayerAddress_present){ + m_s1ap_log->warning("GW Transport Layer present, but not handled."); + } + if(msg->RelayNode_Indicator_present){ + m_s1ap_log->warning("Relay Node Indicator present, but not handled."); + } + if(msg->GUMMEIType_present){ + m_s1ap_log->warning("GUMMEI Type present, but not handled."); + } + if(msg->Tunnel_Information_for_BBF_present){ + m_s1ap_log->warning("Tunnel Information for BBF present, but not handled."); + } + if(msg->SIPTO_L_GW_TransportLayerAddress_present){ + m_s1ap_log->warning("SIPTO GW Transport Layer Address present, but not handled."); + } + if(msg->LHN_ID_present){ + m_s1ap_log->warning("LHN Id present, but not handled."); + } + + /* + typedef struct{ + bool ext; + LIBLTE_S1AP_ENB_UE_S1AP_ID_STRUCT eNB_UE_S1AP_ID; + LIBLTE_S1AP_NAS_PDU_STRUCT NAS_PDU; + LIBLTE_S1AP_TAI_STRUCT TAI; + LIBLTE_S1AP_EUTRAN_CGI_STRUCT EUTRAN_CGI; + LIBLTE_S1AP_RRC_ESTABLISHMENT_CAUSE_ENUM_EXT RRC_Establishment_Cause; + LIBLTE_S1AP_S_TMSI_STRUCT S_TMSI; + bool S_TMSI_present; + LIBLTE_S1AP_CSG_ID_STRUCT CSG_Id; + bool CSG_Id_present; + LIBLTE_S1AP_GUMMEI_STRUCT GUMMEI_ID; + bool GUMMEI_ID_present; + LIBLTE_S1AP_CELLACCESSMODE_ENUM_EXT CellAccessMode; + bool CellAccessMode_present; + LIBLTE_S1AP_TRANSPORTLAYERADDRESS_STRUCT GW_TransportLayerAddress; + bool GW_TransportLayerAddress_present; + LIBLTE_S1AP_RELAYNODE_INDICATOR_ENUM_EXT RelayNode_Indicator; + bool RelayNode_Indicator_present; + LIBLTE_S1AP_GUMMEITYPE_ENUM_EXT GUMMEIType; + bool GUMMEIType_present; + LIBLTE_S1AP_TUNNELINFORMATION_STRUCT Tunnel_Information_for_BBF; + bool Tunnel_Information_for_BBF_present; + LIBLTE_S1AP_TRANSPORTLAYERADDRESS_STRUCT SIPTO_L_GW_TransportLayerAddress; + bool SIPTO_L_GW_TransportLayerAddress_present; + LIBLTE_S1AP_LHN_ID_STRUCT LHN_ID; + bool LHN_ID_present; + }LIBLTE_S1AP_MESSAGE_INITIALUEMESSAGE_STRUCT; + */ //Send Reply to eNB //ssize_t n_sent = sctp_send(m_s1mme,reply_msg.msg, reply_msg.N_bytes, enb_sri, 0); //if(n_sent == -1)