forked from acouzens/open5gs
100 lines
2.9 KiB
C
100 lines
2.9 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 "sgsap-types.h"
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#include "mme-context.h"
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#include "mme-path.h"
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#include "nas-conv.h"
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#include "nas-path.h"
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void sgsap_handler_location_update_accept(mme_vlr_t *vlr, ogs_pkbuf_t *pkbuf)
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{
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ogs_tlv_t *root = NULL, *iter = NULL;
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mme_ue_t *mme_ue = NULL;
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enb_ue_t *enb_ue = NULL;
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nas_mobile_identity_imsi_t *nas_mobile_identity_imsi = NULL;
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int nas_mobile_identity_imsi_len = 0;
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nas_lai_t *lai = NULL;
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nas_mobile_identity_tmsi_t *nas_mobile_identity_tmsi = NULL;
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ogs_assert(vlr);
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ogs_assert(pkbuf);
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ogs_pkbuf_pull(pkbuf, 1);
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root = ogs_tlv_parse_block(pkbuf->len, pkbuf->data, OGS_TLV_MODE_T1_L1);
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ogs_assert(root);
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iter = root;
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while (iter) {
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switch (iter->type) {
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case SGSAP_IE_IMSI_TYPE:
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nas_mobile_identity_imsi = iter->value;
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nas_mobile_identity_imsi_len = iter->length;
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break;
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case SGSAP_IE_LAI_TYPE:
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lai = iter->value;
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break;
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case SGSAP_IE_MOBILE_IDENTITY_TYPE:
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nas_mobile_identity_tmsi = iter->value;
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break;
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}
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iter = iter->next;
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}
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ogs_tlv_free_all(root);
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ogs_assert(nas_mobile_identity_imsi && lai && nas_mobile_identity_tmsi);
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ogs_assert(nas_mobile_identity_imsi_len == SGSAP_IE_IMSI_LEN);
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if (nas_mobile_identity_imsi->type == NAS_MOBILE_IDENTITY_IMSI) {
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char imsi_bcd[MAX_IMSI_BCD_LEN+1];
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nas_imsi_to_bcd(nas_mobile_identity_imsi,
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nas_mobile_identity_imsi_len, imsi_bcd);
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mme_ue = mme_ue_find_by_imsi_bcd(imsi_bcd);
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} else {
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ogs_error("Not supported Identity type[%d]",
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nas_mobile_identity_imsi->type);
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goto error;
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}
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ogs_assert(mme_ue);
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if (nas_mobile_identity_tmsi->type == NAS_MOBILE_IDENTITY_TMSI) {
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mme_ue->p_tmsi = ntohl(nas_mobile_identity_tmsi->tmsi);
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} else {
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ogs_error("Not supported Identity type[%d]",
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nas_mobile_identity_tmsi->type);
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goto error;
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}
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nas_send_attach_accept(mme_ue);
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return;
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error:
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enb_ue = mme_ue->enb_ue;
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ogs_assert(enb_ue);
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mme_send_delete_session_or_ue_context_release(mme_ue, enb_ue);
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}
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