forked from acouzens/open5gs
224 lines
7.9 KiB
C
224 lines
7.9 KiB
C
/*
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* Copyright (C) 2019,2020 by Sukchan Lee <acetcom@gmail.com>
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*
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* This file is part of Open5GS.
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#include "test-common.h"
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void testngap_recv(test_ue_t *test_ue, ogs_pkbuf_t *pkbuf)
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{
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int rv;
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ogs_ngap_message_t message;
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NGAP_NGAP_PDU_t *pdu = NULL;
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NGAP_InitiatingMessage_t *initiatingMessage = NULL;
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NGAP_SuccessfulOutcome_t *successfulOutcome = NULL;
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NGAP_UnsuccessfulOutcome_t *unsuccessfulOutcome = NULL;
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ogs_assert(test_ue);
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ogs_assert(pkbuf);
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rv = ogs_ngap_decode(&message, pkbuf);
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ogs_assert(rv == OGS_OK);
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pdu = &message;
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ogs_assert(pdu);
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switch (pdu->present) {
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case NGAP_NGAP_PDU_PR_initiatingMessage:
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initiatingMessage = pdu->choice.initiatingMessage;
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ogs_assert(initiatingMessage);
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if (test_ue)
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test_ue->ngap_procedure_code = initiatingMessage->procedureCode;
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switch (initiatingMessage->procedureCode) {
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case NGAP_ProcedureCode_id_DownlinkNASTransport:
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testngap_handle_downlink_nas_transport(test_ue, pdu);
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break;
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case NGAP_ProcedureCode_id_InitialContextSetup:
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testngap_handle_initial_context_setup_request(test_ue, pdu);
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break;
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case NGAP_ProcedureCode_id_UEContextRelease:
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testngap_handle_ue_release_context_command(test_ue, pdu);
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break;
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case NGAP_ProcedureCode_id_PDUSessionResourceSetup:
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testngap_handle_pdu_session_resource_setup_request(test_ue, pdu);
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break;
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case NGAP_ProcedureCode_id_PDUSessionResourceModify:
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testngap_handle_pdu_session_resource_modify_request(test_ue, pdu);
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break;
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case NGAP_ProcedureCode_id_PDUSessionResourceRelease:
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testngap_handle_pdu_session_resource_release_command(test_ue, pdu);
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break;
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case NGAP_ProcedureCode_id_DownlinkRANConfigurationTransfer:
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break;
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case NGAP_ProcedureCode_id_HandoverResourceAllocation:
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testngap_handle_handover_request(test_ue, pdu);
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break;
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case NGAP_ProcedureCode_id_DownlinkRANStatusTransfer:
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testngap_handle_downlink_ran_status_transfer(test_ue, pdu);
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break;
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case NGAP_ProcedureCode_id_ErrorIndication:
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case NGAP_ProcedureCode_id_Paging:
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/* Nothing */
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break;
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default:
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ogs_error("Not implemented(choice:%d, proc:%d)",
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pdu->present, (int)initiatingMessage->procedureCode);
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break;
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}
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break;
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case NGAP_NGAP_PDU_PR_successfulOutcome :
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successfulOutcome = pdu->choice.successfulOutcome;
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ogs_assert(successfulOutcome);
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if (test_ue)
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test_ue->ngap_procedure_code = successfulOutcome->procedureCode;
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switch (successfulOutcome->procedureCode) {
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case NGAP_ProcedureCode_id_NGSetup:
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testngap_handle_ng_setup_response(test_ue, pdu);
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break;
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case NGAP_ProcedureCode_id_PathSwitchRequest:
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break;
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case NGAP_ProcedureCode_id_HandoverPreparation:
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testngap_handle_handover_command(test_ue, pdu);
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break;
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case NGAP_ProcedureCode_id_HandoverCancel:
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testngap_handle_handover_cancel_ack(test_ue, pdu);
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break;
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case NGAP_ProcedureCode_id_NGReset:
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break;
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default:
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ogs_error("Not implemented(choice:%d, proc:%d)",
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pdu->present, (int)successfulOutcome->procedureCode);
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break;
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}
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break;
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case NGAP_NGAP_PDU_PR_unsuccessfulOutcome :
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unsuccessfulOutcome = pdu->choice.unsuccessfulOutcome;
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ogs_assert(unsuccessfulOutcome);
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if (test_ue)
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test_ue->ngap_procedure_code = unsuccessfulOutcome->procedureCode;
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switch (unsuccessfulOutcome->procedureCode) {
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case NGAP_ProcedureCode_id_NGSetup:
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break;
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case NGAP_ProcedureCode_id_HandoverPreparation:
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testngap_handle_handover_preparation_failure(test_ue, pdu);
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break;
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default:
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ogs_error("Not implemented(choice:%d, proc:%d)",
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pdu->present, (int)unsuccessfulOutcome->procedureCode);
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break;
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}
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break;
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default:
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ogs_error("Not implemented(choice:%d)", pdu->present);
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break;
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}
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ogs_ngap_free(&message);
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ogs_pkbuf_free(pkbuf);
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}
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void testngap_send_to_nas(test_ue_t *test_ue, NGAP_NAS_PDU_t *nasPdu)
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{
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ogs_nas_5gs_security_header_t *sh = NULL;
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ogs_nas_security_header_type_t security_header_type;
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ogs_nas_5gmm_header_t *h = NULL;
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ogs_pkbuf_t *nasbuf = NULL;
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ogs_assert(test_ue);
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ogs_assert(nasPdu);
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/* The Packet Buffer(pkbuf_t) for NAS message MUST make a HEADROOM.
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* When calculating AES_CMAC, we need to use the headroom of the packet. */
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nasbuf = ogs_pkbuf_alloc(NULL, OGS_NAS_HEADROOM+nasPdu->size);
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ogs_assert(nasbuf);
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ogs_pkbuf_reserve(nasbuf, OGS_NAS_HEADROOM);
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ogs_pkbuf_put_data(nasbuf, nasPdu->buf, nasPdu->size);
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sh = (ogs_nas_5gs_security_header_t *)nasbuf->data;
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ogs_assert(sh);
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memset(&security_header_type, 0, sizeof(ogs_nas_security_header_type_t));
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switch(sh->security_header_type) {
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case OGS_NAS_SECURITY_HEADER_PLAIN_NAS_MESSAGE:
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break;
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case OGS_NAS_SECURITY_HEADER_INTEGRITY_PROTECTED:
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security_header_type.integrity_protected = 1;
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ogs_pkbuf_pull(nasbuf, 7);
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break;
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case OGS_NAS_SECURITY_HEADER_INTEGRITY_PROTECTED_AND_CIPHERED:
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security_header_type.integrity_protected = 1;
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security_header_type.ciphered = 1;
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ogs_pkbuf_pull(nasbuf, 7);
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break;
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case OGS_NAS_SECURITY_HEADER_INTEGRITY_PROTECTED_AND_NEW_SECURITY_CONTEXT:
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security_header_type.integrity_protected = 1;
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security_header_type.new_security_context = 1;
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ogs_pkbuf_pull(nasbuf, 7);
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break;
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case OGS_NAS_SECURITY_HEADER_INTEGRITY_PROTECTED_AND_CIPHTERD_WITH_NEW_INTEGRITY_CONTEXT:
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security_header_type.integrity_protected = 1;
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security_header_type.ciphered = 1;
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security_header_type.new_security_context = 1;
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ogs_pkbuf_pull(nasbuf, 7);
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break;
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default:
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ogs_error("Not implemented(security header type:0x%x)",
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sh->security_header_type);
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ogs_assert_if_reached();
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}
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h = (ogs_nas_5gmm_header_t *)nasbuf->data;
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ogs_assert(h);
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if (sh->security_header_type ==
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OGS_NAS_SECURITY_HEADER_INTEGRITY_PROTECTED_AND_NEW_SECURITY_CONTEXT &&
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h->message_type == OGS_NAS_5GS_SECURITY_MODE_COMMAND) {
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ogs_nas_5gs_message_t message;
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int rv;
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rv = ogs_nas_5gmm_decode(&message, nasbuf);
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ogs_assert(rv == OGS_OK);
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testgmm_handle_security_mode_command(test_ue,
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&message.gmm.security_mode_command);
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}
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if (test_nas_5gs_security_decode(test_ue,
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security_header_type, nasbuf) != OGS_OK) {
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ogs_error("nas_eps_security_decode failed()");
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ogs_assert_if_reached();
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}
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if (h->extended_protocol_discriminator ==
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OGS_NAS_EXTENDED_PROTOCOL_DISCRIMINATOR_5GMM) {
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testgmm_recv(test_ue, nasbuf);
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} else {
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ogs_error("Unknown NAS Protocol discriminator 0x%02x",
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h->extended_protocol_discriminator);
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ogs_assert_if_reached();
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}
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}
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