2020-12-11 19:03:20 +00:00
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/*
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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 "sbi-path.h"
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static pcf_context_t self;
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int __pcf_log_domain;
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static OGS_POOL(pcf_ue_pool, pcf_ue_t);
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static OGS_POOL(pcf_sess_pool, pcf_sess_t);
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static int context_initialized = 0;
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void pcf_context_init(void)
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{
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ogs_assert(context_initialized == 0);
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/* Initialize PCF context */
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memset(&self, 0, sizeof(pcf_context_t));
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2021-01-01 02:07:08 +00:00
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ogs_log_install_domain(&__ogs_dbi_domain, "dbi", ogs_core()->log.level);
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2020-12-11 19:03:20 +00:00
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ogs_log_install_domain(&__pcf_log_domain, "pcf", ogs_core()->log.level);
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ogs_pool_init(&pcf_ue_pool, ogs_app()->max.ue);
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ogs_pool_init(&pcf_sess_pool, ogs_app()->pool.sess);
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ogs_list_init(&self.pcf_ue_list);
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self.supi_hash = ogs_hash_make();
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context_initialized = 1;
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}
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void pcf_context_final(void)
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{
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ogs_assert(context_initialized == 1);
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pcf_ue_remove_all();
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ogs_assert(self.supi_hash);
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ogs_hash_destroy(self.supi_hash);
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ogs_pool_final(&pcf_sess_pool);
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ogs_pool_final(&pcf_ue_pool);
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context_initialized = 0;
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}
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pcf_context_t *pcf_self(void)
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{
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return &self;
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}
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static int pcf_context_prepare(void)
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{
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self.nf_type = OpenAPI_nf_type_PCF;
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return OGS_OK;
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}
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static int pcf_context_validation(void)
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{
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return OGS_OK;
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}
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int pcf_context_parse_config(void)
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{
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int rv;
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yaml_document_t *document = NULL;
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ogs_yaml_iter_t root_iter;
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document = ogs_app()->document;
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ogs_assert(document);
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rv = pcf_context_prepare();
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if (rv != OGS_OK) return rv;
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ogs_yaml_iter_init(&root_iter, document);
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while (ogs_yaml_iter_next(&root_iter)) {
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const char *root_key = ogs_yaml_iter_key(&root_iter);
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ogs_assert(root_key);
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if (!strcmp(root_key, "pcf")) {
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ogs_yaml_iter_t pcf_iter;
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ogs_yaml_iter_recurse(&root_iter, &pcf_iter);
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while (ogs_yaml_iter_next(&pcf_iter)) {
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const char *pcf_key = ogs_yaml_iter_key(&pcf_iter);
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ogs_assert(pcf_key);
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if (!strcmp(pcf_key, "sbi")) {
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/* handle config in sbi library */
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} else
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ogs_warn("unknown key `%s`", pcf_key);
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}
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}
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}
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rv = pcf_context_validation();
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if (rv != OGS_OK) return rv;
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return OGS_OK;
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}
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pcf_ue_t *pcf_ue_add(char *supi)
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{
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pcf_event_t e;
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pcf_ue_t *pcf_ue = NULL;
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ogs_assert(supi);
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ogs_pool_alloc(&pcf_ue_pool, &pcf_ue);
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ogs_assert(pcf_ue);
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memset(pcf_ue, 0, sizeof *pcf_ue);
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2021-01-01 02:07:08 +00:00
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/* SBI Type */
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2020-12-11 19:03:20 +00:00
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pcf_ue->sbi.type = OGS_SBI_OBJ_UE_TYPE;
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2021-01-01 02:07:08 +00:00
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/* SBI Features */
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OGS_SBI_FEATURES_SET(pcf_ue->am_policy_control_features,
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OGS_SBI_NPCF_AM_POLICY_CONTROL_UE_AMBR_AUTHORIZATION);
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2020-12-11 19:03:20 +00:00
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pcf_ue->association_id = ogs_msprintf("%d",
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(int)ogs_pool_index(&pcf_ue_pool, pcf_ue));
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ogs_assert(pcf_ue->association_id);
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pcf_ue->supi = ogs_strdup(supi);
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ogs_assert(pcf_ue->supi);
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ogs_hash_set(self.supi_hash, pcf_ue->supi, strlen(pcf_ue->supi), pcf_ue);
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memset(&e, 0, sizeof(e));
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e.pcf_ue = pcf_ue;
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ogs_fsm_create(&pcf_ue->sm, pcf_am_state_initial, pcf_am_state_final);
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ogs_fsm_init(&pcf_ue->sm, &e);
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ogs_list_add(&self.pcf_ue_list, pcf_ue);
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return pcf_ue;
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}
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void pcf_ue_remove(pcf_ue_t *pcf_ue)
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{
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pcf_event_t e;
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ogs_assert(pcf_ue);
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ogs_list_remove(&self.pcf_ue_list, pcf_ue);
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memset(&e, 0, sizeof(e));
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e.pcf_ue = pcf_ue;
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ogs_fsm_fini(&pcf_ue->sm, &e);
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ogs_fsm_delete(&pcf_ue->sm);
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/* Free SBI object memory */
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ogs_sbi_object_free(&pcf_ue->sbi);
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pcf_sess_remove_all(pcf_ue);
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OpenAPI_policy_association_request_free(pcf_ue->policy_association_request);
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2021-01-01 02:07:08 +00:00
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if (pcf_ue->subscribed_ue_ambr)
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OpenAPI_ambr_free(pcf_ue->subscribed_ue_ambr);
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2020-12-11 19:03:20 +00:00
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ogs_assert(pcf_ue->association_id);
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ogs_free(pcf_ue->association_id);
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ogs_assert(pcf_ue->supi);
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ogs_hash_set(self.supi_hash, pcf_ue->supi, strlen(pcf_ue->supi), NULL);
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ogs_free(pcf_ue->supi);
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if (pcf_ue->notification_uri)
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ogs_free(pcf_ue->notification_uri);
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ogs_pool_free(&pcf_ue_pool, pcf_ue);
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}
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void pcf_ue_remove_all()
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{
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pcf_ue_t *pcf_ue = NULL, *next = NULL;;
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ogs_list_for_each_safe(&self.pcf_ue_list, next, pcf_ue)
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pcf_ue_remove(pcf_ue);
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}
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pcf_ue_t *pcf_ue_find_by_supi(char *supi)
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{
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ogs_assert(supi);
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return (pcf_ue_t *)ogs_hash_get(self.supi_hash, supi, strlen(supi));
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}
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pcf_ue_t *pcf_ue_find_by_association_id(char *association_id)
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{
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ogs_assert(association_id);
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return ogs_pool_find(&pcf_ue_pool, atoll(association_id));
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}
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pcf_sess_t *pcf_sess_add(pcf_ue_t *pcf_ue, uint8_t psi)
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{
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pcf_event_t e;
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pcf_sess_t *sess = NULL;
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ogs_assert(pcf_ue);
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ogs_assert(psi != OGS_NAS_PDU_SESSION_IDENTITY_UNASSIGNED);
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ogs_pool_alloc(&pcf_sess_pool, &sess);
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ogs_assert(sess);
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memset(sess, 0, sizeof *sess);
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2021-01-01 02:07:08 +00:00
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/* SBI Type */
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2020-12-11 19:03:20 +00:00
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sess->sbi.type = OGS_SBI_OBJ_SESS_TYPE;
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2021-01-01 02:07:08 +00:00
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/* SBI Features */
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OGS_SBI_FEATURES_SET(sess->smpolicycontrol_features,
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OGS_SBI_NPCF_SMPOLICYCONTROL_DN_AUTHORIZATION);
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2020-12-11 19:03:20 +00:00
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sess->sm_policy_id = ogs_msprintf("%d",
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(int)ogs_pool_index(&pcf_sess_pool, sess));
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ogs_assert(sess->sm_policy_id);
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sess->pcf_ue = pcf_ue;
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sess->psi = psi;
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sess->s_nssai.sst = 0;
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sess->s_nssai.sd.v = OGS_S_NSSAI_NO_SD_VALUE;
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memset(&e, 0, sizeof(e));
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e.sess = sess;
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ogs_fsm_create(&sess->sm, pcf_sm_state_initial, pcf_sm_state_final);
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ogs_fsm_init(&sess->sm, &e);
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ogs_list_add(&pcf_ue->sess_list, sess);
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return sess;
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}
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void pcf_sess_remove(pcf_sess_t *sess)
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{
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pcf_event_t e;
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ogs_assert(sess);
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ogs_assert(sess->pcf_ue);
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ogs_list_remove(&sess->pcf_ue->sess_list, sess);
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memset(&e, 0, sizeof(e));
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e.sess = sess;
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ogs_fsm_fini(&sess->sm, &e);
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ogs_fsm_delete(&sess->sm);
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/* Free SBI object memory */
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ogs_sbi_object_free(&sess->sbi);
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ogs_assert(sess->sm_policy_id);
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ogs_free(sess->sm_policy_id);
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if (sess->dnn)
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ogs_free(sess->dnn);
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if (sess->notification_uri)
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ogs_free(sess->notification_uri);
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2021-01-01 02:07:08 +00:00
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if (sess->subscribed_sess_ambr)
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OpenAPI_ambr_free(sess->subscribed_sess_ambr);
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if (sess->subscribed_default_qos)
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OpenAPI_subscribed_default_qos_free(sess->subscribed_default_qos);
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2020-12-11 19:03:20 +00:00
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ogs_pool_free(&pcf_sess_pool, sess);
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}
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void pcf_sess_remove_all(pcf_ue_t *pcf_ue)
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{
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pcf_sess_t *sess = NULL, *next_sess = NULL;
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ogs_assert(pcf_ue);
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ogs_list_for_each_safe(&pcf_ue->sess_list, next_sess, sess)
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pcf_sess_remove(sess);
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}
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pcf_sess_t *pcf_sess_find_by_sm_policy_id(pcf_ue_t *pcf_ue, char *sm_policy_id)
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{
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pcf_sess_t *sess = NULL;
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ogs_assert(sm_policy_id);
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ogs_list_for_each(&pcf_ue->sess_list, sess)
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if (!strcmp(sess->sm_policy_id, sm_policy_id)) return sess;
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return NULL;
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}
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pcf_sess_t *pcf_sess_find_by_psi(pcf_ue_t *pcf_ue, uint8_t psi)
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{
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pcf_sess_t *sess = NULL;
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ogs_list_for_each(&pcf_ue->sess_list, sess)
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if (psi == sess->psi) return sess;
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return NULL;
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}
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pcf_ue_t *pcf_ue_cycle(pcf_ue_t *pcf_ue)
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{
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return ogs_pool_cycle(&pcf_ue_pool, pcf_ue);
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}
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pcf_sess_t *pcf_sess_cycle(pcf_sess_t *sess)
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{
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return ogs_pool_cycle(&pcf_sess_pool, sess);
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}
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