141 lines
3.6 KiB
C
141 lines
3.6 KiB
C
/*
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* Copyright (C) 2019 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 "ogs-sctp.h"
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#include "mme-event.h"
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#include "mme-sm.h"
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#include "sgsap-build.h"
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#include "sgsap-path.h"
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int sgsap_open()
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{
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mme_vlr_t *vlr = NULL;
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ogs_list_for_each(&mme_self()->vlr_list, vlr) {
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mme_event_t e;
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e.vlr = vlr;
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ogs_fsm_create(&vlr->sm, sgsap_state_initial, sgsap_state_final);
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ogs_fsm_init(&vlr->sm, &e);
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}
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return OGS_OK;
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}
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void sgsap_close()
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{
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mme_vlr_t *vlr = NULL;
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ogs_list_for_each(&mme_self()->vlr_list, vlr) {
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mme_event_t e;
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e.vlr = vlr;
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ogs_fsm_fini(&vlr->sm, &e);
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ogs_fsm_delete(&vlr->sm);
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}
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}
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int sgsap_send(ogs_sock_t *sock, ogs_pkbuf_t *pkbuf,
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ogs_sockaddr_t *addr, uint16_t stream_no)
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{
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int sent;
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ogs_assert(sock);
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ogs_assert(pkbuf);
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sent = ogs_sctp_sendmsg(sock, pkbuf->data, pkbuf->len,
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addr, SCTP_SGSAP_PPID, stream_no);
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if (sent < 0 || sent != pkbuf->len) {
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ogs_error("ogs_sctp_sendmsg error (%d:%s)", errno, strerror(errno));
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return OGS_ERROR;
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}
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ogs_pkbuf_free(pkbuf);
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return OGS_OK;
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}
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int sgsap_send_to_vlr_with_sid(
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mme_vlr_t *vlr, ogs_pkbuf_t *pkbuf, uint16_t stream_no)
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{
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char buf[OGS_ADDRSTRLEN];
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ogs_socknode_t *node = NULL;;
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ogs_sock_t *sock = NULL;;
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int rv;
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ogs_assert(vlr);
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ogs_assert(pkbuf);
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node = vlr->node;
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ogs_assert(node);
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sock = node->sock;
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ogs_assert(sock);
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ogs_debug(" IP[%s] TAI[MCC:%d%d%d,MNC:%d%d%d,TAC:%d]",
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OGS_ADDR(node->addr, buf),
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vlr->tai.nas_plmn_id.mcc1,
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vlr->tai.nas_plmn_id.mcc2,
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vlr->tai.nas_plmn_id.mcc3,
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vlr->tai.nas_plmn_id.mnc1,
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vlr->tai.nas_plmn_id.mnc2,
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vlr->tai.nas_plmn_id.mnc3,
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vlr->tai.tac);
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ogs_debug(" LAI[MCC:%d%d%d,MNC:%d%d%d,TAC:%d]",
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vlr->lai.nas_plmn_id.mcc1,
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vlr->lai.nas_plmn_id.mcc2,
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vlr->lai.nas_plmn_id.mcc3,
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vlr->lai.nas_plmn_id.mnc1,
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vlr->lai.nas_plmn_id.mnc2,
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vlr->lai.nas_plmn_id.mnc3,
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vlr->lai.lac);
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rv = sgsap_send(sock, pkbuf, node->addr, stream_no);
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if (rv != OGS_OK) {
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ogs_error("sgsap_send() failed");
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ogs_pkbuf_free(pkbuf);
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}
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return OGS_OK;;
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}
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int sgsap_send_to_vlr(mme_ue_t *mme_ue, ogs_pkbuf_t *pkbuf)
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{
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mme_vlr_t *vlr = NULL;
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ogs_assert(mme_ue);
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ogs_assert(pkbuf);
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vlr = mme_ue->vlr;
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ogs_assert(vlr);
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return sgsap_send_to_vlr_with_sid(vlr, pkbuf, mme_ue->vlr_ostream_id);
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}
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int sgsap_send_location_update_request(mme_ue_t *mme_ue)
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{
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int rv;
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ogs_pkbuf_t *pkbuf = NULL;
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ogs_assert(mme_ue);
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pkbuf = sgsap_build_location_update_request(mme_ue);
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rv = sgsap_send_to_vlr(mme_ue, pkbuf);
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ogs_assert(rv == OGS_OK);
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return OGS_OK;
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}
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