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open5gs/lib/ngap/build.c

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/*
* Copyright (C) 2019 by Sukchan Lee <acetcom@gmail.com>
*
* This file is part of Open5GS.
*
* This program 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.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "ogs-ngap.h"
ogs_pkbuf_t *ogs_ngap_build_error_indication(
uint64_t *ran_ue_ngap_id,
uint64_t *amf_ue_ngap_id,
NGAP_Cause_PR group, long cause)
{
NGAP_NGAP_PDU_t pdu;
NGAP_InitiatingMessage_t *initiatingMessage = NULL;
NGAP_ErrorIndication_t *ErrorIndication = NULL;
NGAP_ErrorIndicationIEs_t *ie = NULL;
NGAP_AMF_UE_NGAP_ID_t *AMF_UE_NGAP_ID = NULL;
NGAP_RAN_UE_NGAP_ID_t *RAN_UE_NGAP_ID = NULL;
NGAP_Cause_t *Cause = NULL;
ogs_debug("Error Indication");
memset(&pdu, 0, sizeof (NGAP_NGAP_PDU_t));
pdu.present = NGAP_NGAP_PDU_PR_initiatingMessage;
pdu.choice.initiatingMessage = CALLOC(1, sizeof(NGAP_InitiatingMessage_t));
initiatingMessage = pdu.choice.initiatingMessage;
initiatingMessage->procedureCode = NGAP_ProcedureCode_id_ErrorIndication;
initiatingMessage->criticality = NGAP_Criticality_ignore;
initiatingMessage->value.present =
NGAP_InitiatingMessage__value_PR_ErrorIndication;
ErrorIndication = &initiatingMessage->value.choice.ErrorIndication;
if (amf_ue_ngap_id) {
ie = CALLOC(1, sizeof(NGAP_ErrorIndicationIEs_t));
ASN_SEQUENCE_ADD(&ErrorIndication->protocolIEs, ie);
ie->id = NGAP_ProtocolIE_ID_id_AMF_UE_NGAP_ID;
ie->criticality = NGAP_Criticality_ignore;
ie->value.present = NGAP_ErrorIndicationIEs__value_PR_AMF_UE_NGAP_ID;
AMF_UE_NGAP_ID = &ie->value.choice.AMF_UE_NGAP_ID;
asn_uint642INTEGER(AMF_UE_NGAP_ID, *amf_ue_ngap_id);
ogs_debug(" AMF_UE_NGAP_ID[%lld]", (long long)*amf_ue_ngap_id);
}
if (ran_ue_ngap_id) {
ie = CALLOC(1, sizeof(NGAP_ErrorIndicationIEs_t));
ASN_SEQUENCE_ADD(&ErrorIndication->protocolIEs, ie);
ie->id = NGAP_ProtocolIE_ID_id_RAN_UE_NGAP_ID;
ie->criticality = NGAP_Criticality_ignore;
ie->value.present = NGAP_ErrorIndicationIEs__value_PR_RAN_UE_NGAP_ID;
RAN_UE_NGAP_ID = &ie->value.choice.RAN_UE_NGAP_ID;
*RAN_UE_NGAP_ID = *ran_ue_ngap_id;
ogs_debug(" RAN_UE_NGAP_ID[%lld]", (long long)*ran_ue_ngap_id);
}
ie = CALLOC(1, sizeof(NGAP_ErrorIndicationIEs_t));
ASN_SEQUENCE_ADD(&ErrorIndication->protocolIEs, ie);
ie->id = NGAP_ProtocolIE_ID_id_Cause;
ie->criticality = NGAP_Criticality_ignore;
ie->value.present = NGAP_ErrorIndicationIEs__value_PR_Cause;
Cause = &ie->value.choice.Cause;
Cause->present = group;
Cause->choice.radioNetwork = cause;
ogs_debug(" Group[%d] Cause[%d]",
Cause->present, (int)Cause->choice.radioNetwork);
return ogs_ngap_encode(&pdu);
}
ogs_pkbuf_t *ogs_ngap_build_ng_reset(
NGAP_Cause_PR group, long cause,
NGAP_UE_associatedLogicalNG_connectionList_t *partOfNG_Interface)
{
NGAP_NGAP_PDU_t pdu;
NGAP_InitiatingMessage_t *initiatingMessage = NULL;
NGAP_NGReset_t *NGReset = NULL;
NGAP_NGResetIEs_t *ie = NULL;
NGAP_Cause_t *Cause = NULL;
NGAP_ResetType_t *ResetType = NULL;
ogs_debug("NGReset");
memset(&pdu, 0, sizeof (NGAP_NGAP_PDU_t));
pdu.present = NGAP_NGAP_PDU_PR_initiatingMessage;
pdu.choice.initiatingMessage = CALLOC(1, sizeof(NGAP_InitiatingMessage_t));
initiatingMessage = pdu.choice.initiatingMessage;
initiatingMessage->procedureCode = NGAP_ProcedureCode_id_NGReset;
initiatingMessage->criticality = NGAP_Criticality_reject;
initiatingMessage->value.present = NGAP_InitiatingMessage__value_PR_NGReset;
NGReset = &initiatingMessage->value.choice.NGReset;
ie = CALLOC(1, sizeof(NGAP_NGResetIEs_t));
ASN_SEQUENCE_ADD(&NGReset->protocolIEs, ie);
ie->id = NGAP_ProtocolIE_ID_id_Cause;
ie->criticality = NGAP_Criticality_ignore;
ie->value.present = NGAP_NGResetIEs__value_PR_Cause;
Cause = &ie->value.choice.Cause;
ie = CALLOC(1, sizeof(NGAP_NGResetIEs_t));
ASN_SEQUENCE_ADD(&NGReset->protocolIEs, ie);
ie->id = NGAP_ProtocolIE_ID_id_ResetType;
ie->criticality = NGAP_Criticality_reject;
ie->value.present = NGAP_NGResetIEs__value_PR_ResetType;
ResetType = &ie->value.choice.ResetType;
Cause->present = group;
Cause->choice.radioNetwork = cause;
ogs_debug(" Group[%d] Cause[%d] partOfNG_Interface[%p]",
Cause->present, (int)Cause->choice.radioNetwork, partOfNG_Interface);
if (partOfNG_Interface) {
ResetType->present = NGAP_ResetType_PR_partOfNG_Interface;
ResetType->choice.partOfNG_Interface = partOfNG_Interface;
} else {
ResetType->present = NGAP_ResetType_PR_nG_Interface;
ResetType->choice.nG_Interface = NGAP_ResetAll_reset_all;
}
return ogs_ngap_encode(&pdu);
}
void ogs_ngap_build_part_of_ng_interface(
NGAP_UE_associatedLogicalNG_connectionList_t *partOfNG_Interface,
uint64_t *ran_ue_ngap_id, uint64_t *amf_ue_ngap_id)
{
NGAP_UE_associatedLogicalNG_connectionItem_t *item = NULL;
ogs_assert(partOfNG_Interface);
ogs_assert(ran_ue_ngap_id || amf_ue_ngap_id);
item = CALLOC(1, sizeof(*item));
ogs_assert(item);
if (amf_ue_ngap_id) {
item->aMF_UE_NGAP_ID = CALLOC(1, sizeof(*item->aMF_UE_NGAP_ID));
ogs_assert(item->aMF_UE_NGAP_ID);
asn_uint642INTEGER(item->aMF_UE_NGAP_ID, *amf_ue_ngap_id);
}
if (ran_ue_ngap_id) {
item->rAN_UE_NGAP_ID = CALLOC(1, sizeof(*item->rAN_UE_NGAP_ID));
ogs_assert(item->rAN_UE_NGAP_ID);
*item->rAN_UE_NGAP_ID = *ran_ue_ngap_id;
}
ASN_SEQUENCE_ADD(&partOfNG_Interface->list, item);
}
ogs_pkbuf_t *ogs_ngap_build_ng_reset_ack(
NGAP_UE_associatedLogicalNG_connectionList_t *partOfNG_Interface)
{
NGAP_NGAP_PDU_t pdu;
NGAP_SuccessfulOutcome_t *successfulOutcome = NULL;
NGAP_NGResetAcknowledge_t *NGResetAcknowledge = NULL;
NGAP_NGResetAcknowledgeIEs_t *ie = NULL;
ogs_debug("Reset acknowledge");
memset(&pdu, 0, sizeof (NGAP_NGAP_PDU_t));
pdu.present = NGAP_NGAP_PDU_PR_successfulOutcome;
pdu.choice.successfulOutcome = CALLOC(1, sizeof(NGAP_SuccessfulOutcome_t));
successfulOutcome = pdu.choice.successfulOutcome;
successfulOutcome->procedureCode = NGAP_ProcedureCode_id_NGReset;
successfulOutcome->criticality = NGAP_Criticality_reject;
successfulOutcome->value.present =
NGAP_SuccessfulOutcome__value_PR_NGResetAcknowledge;
NGResetAcknowledge = &successfulOutcome->value.choice.NGResetAcknowledge;
ogs_assert(NGResetAcknowledge);
if (partOfNG_Interface && partOfNG_Interface->list.count) {
int i = 0;
NGAP_UE_associatedLogicalNG_connectionList_t *list = NULL;
ie = CALLOC(1, sizeof(NGAP_NGResetAcknowledgeIEs_t));
ogs_assert(ie);
ASN_SEQUENCE_ADD(&NGResetAcknowledge->protocolIEs, ie);
ie->id = NGAP_ProtocolIE_ID_id_UE_associatedLogicalNG_connectionList;
ie->criticality = NGAP_Criticality_ignore;
ie->value.present = NGAP_NGResetAcknowledgeIEs__value_PR_UE_associatedLogicalNG_connectionList;
list = &ie->value.choice.UE_associatedLogicalNG_connectionList;
for (i = 0; i < partOfNG_Interface->list.count; i++) {
NGAP_UE_associatedLogicalNG_connectionItem_t *item = NULL;
uint64_t amf_ue_ngap_id = 0;
uint64_t ran_ue_ngap_id = 0;
item = partOfNG_Interface->list.array[i];
ogs_assert(item);
if (item->aMF_UE_NGAP_ID == NULL &&
item->rAN_UE_NGAP_ID == NULL) {
ogs_warn("No AMF_UE_NGAP_ID and RAN_UE_NGAP_ID");
continue;
}
if (item->aMF_UE_NGAP_ID)
asn_INTEGER2uint64(item->aMF_UE_NGAP_ID, &amf_ue_ngap_id);
if (item->rAN_UE_NGAP_ID)
ran_ue_ngap_id = *item->rAN_UE_NGAP_ID;
ogs_ngap_build_part_of_ng_interface(
list,
item->rAN_UE_NGAP_ID ? &ran_ue_ngap_id : NULL,
item->aMF_UE_NGAP_ID ? &amf_ue_ngap_id : NULL);
ogs_debug(" RAN_UE_NGAP_ID[%lld] AMF_UE_NGAP_ID[%lld]",
item->rAN_UE_NGAP_ID ? (long long)ran_ue_ngap_id : -1,
item->aMF_UE_NGAP_ID ? (long long)amf_ue_ngap_id : -1);
}
}
return ogs_ngap_encode(&pdu);
}
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