234 lines
6.0 KiB
C
234 lines
6.0 KiB
C
/*
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* Copyright (C) 2019-2022 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 udm_context_t self;
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int __udm_log_domain;
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static OGS_POOL(udm_ue_pool, udm_ue_t);
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static int context_initialized = 0;
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void udm_context_init(void)
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{
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ogs_assert(context_initialized == 0);
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/* Initialize UDM context */
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memset(&self, 0, sizeof(udm_context_t));
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ogs_log_install_domain(&__udm_log_domain, "udm", ogs_core()->log.level);
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ogs_pool_init(&udm_ue_pool, ogs_app()->max.ue);
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ogs_list_init(&self.udm_ue_list);
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self.suci_hash = ogs_hash_make();
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ogs_assert(self.suci_hash);
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self.supi_hash = ogs_hash_make();
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ogs_assert(self.supi_hash);
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context_initialized = 1;
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}
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void udm_context_final(void)
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{
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ogs_assert(context_initialized == 1);
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udm_ue_remove_all();
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ogs_assert(self.suci_hash);
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ogs_hash_destroy(self.suci_hash);
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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(&udm_ue_pool);
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context_initialized = 0;
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}
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udm_context_t *udm_self(void)
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{
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return &self;
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}
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static int udm_context_prepare(void)
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{
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return OGS_OK;
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}
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static int udm_context_validation(void)
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{
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return OGS_OK;
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}
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int udm_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 = udm_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, "udm")) {
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ogs_yaml_iter_t udm_iter;
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ogs_yaml_iter_recurse(&root_iter, &udm_iter);
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while (ogs_yaml_iter_next(&udm_iter)) {
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const char *udm_key = ogs_yaml_iter_key(&udm_iter);
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ogs_assert(udm_key);
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if (!strcmp(udm_key, "sbi")) {
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/* handle config in sbi library */
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} else if (!strcmp(udm_key, "service_name")) {
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/* handle config in sbi library */
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} else if (!strcmp(udm_key, "discovery")) {
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/* handle config in sbi library */
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} else
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ogs_warn("unknown key `%s`", udm_key);
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}
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}
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}
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rv = udm_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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udm_ue_t *udm_ue_add(char *suci)
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{
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udm_event_t e;
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udm_ue_t *udm_ue = NULL;
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ogs_assert(suci);
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ogs_pool_alloc(&udm_ue_pool, &udm_ue);
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ogs_assert(udm_ue);
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memset(udm_ue, 0, sizeof *udm_ue);
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udm_ue->ctx_id = ogs_msprintf("%d",
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(int)ogs_pool_index(&udm_ue_pool, udm_ue));
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ogs_assert(udm_ue->ctx_id);
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udm_ue->suci = ogs_strdup(suci);
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ogs_assert(udm_ue->suci);
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ogs_hash_set(self.suci_hash, udm_ue->suci, strlen(udm_ue->suci), udm_ue);
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udm_ue->supi = ogs_supi_from_supi_or_suci(udm_ue->suci);
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ogs_assert(udm_ue->supi);
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ogs_hash_set(self.supi_hash, udm_ue->supi, strlen(udm_ue->supi), udm_ue);
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memset(&e, 0, sizeof(e));
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e.udm_ue = udm_ue;
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ogs_fsm_init(&udm_ue->sm, udm_ue_state_initial, udm_ue_state_final, &e);
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ogs_list_add(&self.udm_ue_list, udm_ue);
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return udm_ue;
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}
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void udm_ue_remove(udm_ue_t *udm_ue)
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{
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udm_event_t e;
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ogs_assert(udm_ue);
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ogs_list_remove(&self.udm_ue_list, udm_ue);
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memset(&e, 0, sizeof(e));
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e.udm_ue = udm_ue;
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ogs_fsm_fini(&udm_ue->sm, &e);
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/* Free SBI object memory */
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ogs_sbi_object_free(&udm_ue->sbi);
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OpenAPI_auth_event_free(udm_ue->auth_event);
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OpenAPI_amf3_gpp_access_registration_free(
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udm_ue->amf_3gpp_access_registration);
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ogs_assert(udm_ue->ctx_id);
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ogs_free(udm_ue->ctx_id);
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ogs_assert(udm_ue->suci);
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ogs_hash_set(self.suci_hash, udm_ue->suci, strlen(udm_ue->suci), NULL);
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ogs_free(udm_ue->suci);
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ogs_assert(udm_ue->supi);
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ogs_hash_set(self.supi_hash, udm_ue->supi, strlen(udm_ue->supi), NULL);
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ogs_free(udm_ue->supi);
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if (udm_ue->serving_network_name)
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ogs_free(udm_ue->serving_network_name);
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if (udm_ue->ausf_instance_id)
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ogs_free(udm_ue->ausf_instance_id);
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if (udm_ue->amf_instance_id)
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ogs_free(udm_ue->amf_instance_id);
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if (udm_ue->dereg_callback_uri)
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ogs_free(udm_ue->dereg_callback_uri);
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ogs_pool_free(&udm_ue_pool, udm_ue);
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}
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void udm_ue_remove_all()
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{
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udm_ue_t *udm_ue = NULL, *next = NULL;;
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ogs_list_for_each_safe(&self.udm_ue_list, next, udm_ue)
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udm_ue_remove(udm_ue);
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}
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udm_ue_t *udm_ue_find_by_suci(char *suci)
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{
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ogs_assert(suci);
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return (udm_ue_t *)ogs_hash_get(self.suci_hash, suci, strlen(suci));
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}
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udm_ue_t *udm_ue_find_by_supi(char *supi)
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{
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ogs_assert(supi);
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return (udm_ue_t *)ogs_hash_get(self.supi_hash, supi, strlen(supi));
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}
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udm_ue_t *udm_ue_find_by_suci_or_supi(char *suci_or_supi)
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{
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ogs_assert(suci_or_supi);
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if (strncmp(suci_or_supi, "suci-", strlen("suci-")) == 0)
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return udm_ue_find_by_suci(suci_or_supi);
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else
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return udm_ue_find_by_supi(suci_or_supi);
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}
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udm_ue_t *udm_ue_find_by_ctx_id(char *ctx_id)
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{
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ogs_assert(ctx_id);
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return ogs_pool_find(&udm_ue_pool, atoll(ctx_id));
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}
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udm_ue_t *udm_ue_cycle(udm_ue_t *udm_ue)
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{
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return ogs_pool_cycle(&udm_ue_pool, udm_ue);
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}
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