int amf_namf_callback_handle_sm_context_status(
        ogs_sbi_stream_t *stream, ogs_sbi_message_t *recvmsg)
{
    int status = OGS_SBI_HTTP_STATUS_NO_CONTENT;

    amf_ue_t *amf_ue = NULL;
    amf_sess_t *sess = NULL;

    uint8_t pdu_session_identity;

    ogs_sbi_message_t sendmsg;
    ogs_sbi_response_t *response = NULL;

    OpenAPI_sm_context_status_notification_t *SmContextStatusNotification;
    OpenAPI_status_info_t *StatusInfo;

    ogs_assert(stream);
    ogs_assert(recvmsg);

    if (!recvmsg->h.resource.component[0]) {
        status = OGS_SBI_HTTP_STATUS_BAD_REQUEST;
        ogs_error("No SUPI");
        goto cleanup;
    }

    amf_ue = amf_ue_find_by_supi(recvmsg->h.resource.component[0]);
    if (!amf_ue) {
        status = OGS_SBI_HTTP_STATUS_NOT_FOUND;
        ogs_error("Cannot find SUPI [%s]", recvmsg->h.resource.component[0]);
        goto cleanup;
    }

    if (!recvmsg->h.resource.component[2]) {
        status = OGS_SBI_HTTP_STATUS_BAD_REQUEST;
        ogs_error("[%s] No PDU Session Identity", amf_ue->supi);
        goto cleanup;
    }

    pdu_session_identity = atoi(recvmsg->h.resource.component[2]);
    if (pdu_session_identity == OGS_NAS_PDU_SESSION_IDENTITY_UNASSIGNED) {
        status = OGS_SBI_HTTP_STATUS_BAD_REQUEST;
        ogs_error("[%s] PDU Session Identity is unassigned", amf_ue->supi);
        goto cleanup;
    }

    sess = amf_sess_find_by_psi(amf_ue, pdu_session_identity);
    if (!sess) {
        status = OGS_SBI_HTTP_STATUS_NOT_FOUND;
        ogs_warn("[%s] Cannot find session", amf_ue->supi);
        goto cleanup;
    }

    SmContextStatusNotification = recvmsg->SmContextStatusNotification;
    if (!SmContextStatusNotification) {
        status = OGS_SBI_HTTP_STATUS_BAD_REQUEST;
        ogs_error("[%s:%d] No SmContextStatusNotification",
                amf_ue->supi, sess->psi);
        goto cleanup;
    }

    StatusInfo = SmContextStatusNotification->status_info;
    if (!StatusInfo) {
        status = OGS_SBI_HTTP_STATUS_BAD_REQUEST;
        ogs_error("[%s:%d] No StatusInfo", amf_ue->supi, sess->psi);
        goto cleanup;
    }

    sess->resource_status = StatusInfo->resource_status;

    /*
     * Race condition for PDU session release complete
     *  - CLIENT : /nsmf-pdusession/v1/sm-contexts/{smContextRef}/modify
     *  - SERVER : /namf-callback/v1/{supi}/sm-context-status/{psi})
     *
     * If NOTIFICATION is received before the CLIENT response is received,
     * CLIENT sync is not finished. In this case, the session context
     * should not be removed.
     *
     * If NOTIFICATION comes after the CLIENT response is received,
     * sync is done. So, the session context can be removed.
     */
    if (sess->n1_released == true &&
        sess->n2_released == true &&
        sess->resource_status == OpenAPI_resource_status_RELEASED) {

        ogs_debug("[%s:%d] SM context remove", amf_ue->supi, sess->psi);
        amf_nsmf_pdusession_handle_release_sm_context(
                sess, AMF_RELEASE_SM_CONTEXT_NO_STATE);
    }

cleanup:
    memset(&sendmsg, 0, sizeof(sendmsg));

    response = ogs_sbi_build_response(&sendmsg, status);
    ogs_assert(response);
    ogs_assert(true == ogs_sbi_server_send_response(stream, response));

    return OGS_OK;
}
Unknown