forked from acouzens/open5gs
583 lines
23 KiB
C
583 lines
23 KiB
C
/*
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* Copyright (C) 2023 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 "context.h"
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static sepp_context_t self;
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int __sepp_log_domain;
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static OGS_POOL(sepp_node_pool, sepp_node_t);
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static OGS_POOL(sepp_assoc_pool, sepp_assoc_t);
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static int context_initialized = 0;
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static int max_num_of_sepp_node = 0;
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static int max_num_of_sepp_assoc = 0;
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void sepp_context_init(void)
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{
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ogs_assert(context_initialized == 0);
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/* Initialize SEPP context */
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memset(&self, 0, sizeof(sepp_context_t));
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ogs_log_install_domain(&__sepp_log_domain, "sepp", ogs_core()->log.level);
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max_num_of_sepp_node = ogs_app()->pool.nf;
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ogs_pool_init(&sepp_node_pool, max_num_of_sepp_node);
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#define MAX_NUM_OF_SEPP_ASSOC 8
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max_num_of_sepp_assoc = ogs_global_conf()->max.ue * MAX_NUM_OF_SEPP_ASSOC;
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ogs_pool_init(&sepp_assoc_pool, max_num_of_sepp_assoc);
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context_initialized = 1;
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}
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void sepp_context_final(void)
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{
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ogs_assert(context_initialized == 1);
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ogs_sbi_nf_instance_remove_all();
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sepp_node_remove_all();
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sepp_assoc_remove_all();
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ogs_pool_final(&sepp_node_pool);
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ogs_pool_final(&sepp_assoc_pool);
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if (self.sender)
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ogs_free(self.sender);
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context_initialized = 0;
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}
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sepp_context_t *sepp_self(void)
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{
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return &self;
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}
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static int sepp_context_prepare(void)
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{
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ogs_sbi_server_t *server = NULL;
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ogs_sbi_nf_instance_t *nf_instance = NULL;
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ogs_sbi_nf_info_t *nf_info = NULL;
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ogs_sbi_sepp_info_t *sepp_info = NULL;
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/*********************************************************************
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* SEPP Port Configuration
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*********************************************************************/
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nf_instance = ogs_sbi_self()->nf_instance;
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ogs_assert(nf_instance);
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nf_info = ogs_sbi_nf_info_add(
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&nf_instance->nf_info_list, OpenAPI_nf_type_SEPP);
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if (!nf_info) {
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ogs_error("ogs_sbi_nf_info_add() failed");
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return OGS_ERROR;
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}
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sepp_info = &nf_info->sepp;
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for (server = ogs_sbi_server_first();
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server; server = ogs_sbi_server_next(server)) {
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ogs_sockaddr_t *advertise = NULL;
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advertise = server->advertise;
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if (!advertise)
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advertise = server->node.addr;
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ogs_assert(advertise);
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if (server->scheme == OpenAPI_uri_scheme_https) {
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sepp_info->https.presence = true;
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sepp_info->https.port = OGS_PORT(advertise);
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} else if (server->scheme == OpenAPI_uri_scheme_http) {
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sepp_info->http.presence = true;
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sepp_info->http.port = OGS_PORT(advertise);
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} else {
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ogs_error("Unknown scheme[%d]", server->scheme);
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ogs_assert_if_reached();
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}
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}
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/*********************************************************************
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* Default Configuration
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*********************************************************************/
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self.security_capability.tls = true;
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self.target_apiroot_supported = true;
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return OGS_OK;
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}
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static int sepp_context_validation(void)
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{
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if (sepp_self()->security_capability.tls == false &&
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sepp_self()->security_capability.prins == false) {
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ogs_error("No Security Capability [%d:%d] in '%s'",
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sepp_self()->security_capability.tls,
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sepp_self()->security_capability.prins,
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ogs_app()->file);
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return OGS_ERROR;
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}
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if (!sepp_self()->sender) {
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ogs_error("No n32.server.sender");
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return OGS_ERROR;
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}
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return OGS_OK;
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}
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int sepp_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 = sepp_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, "sepp")) {
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ogs_yaml_iter_t sepp_iter;
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ogs_yaml_iter_recurse(&root_iter, &sepp_iter);
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while (ogs_yaml_iter_next(&sepp_iter)) {
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const char *sepp_key = ogs_yaml_iter_key(&sepp_iter);
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ogs_assert(sepp_key);
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if (!strcmp(sepp_key, "default")) {
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/* handle config in sbi library */
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} else if (!strcmp(sepp_key, "n32")) {
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ogs_yaml_iter_t sbi_iter;
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ogs_yaml_iter_recurse(&sepp_iter, &sbi_iter);
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while (ogs_yaml_iter_next(&sbi_iter)) {
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const char *sbi_key = ogs_yaml_iter_key(&sbi_iter);
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ogs_assert(sbi_key);
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if (!strcmp(sbi_key, "server")) {
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const char *sender = NULL;
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ogs_yaml_iter_t server_iter, server_array;
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ogs_yaml_iter_recurse(&sbi_iter, &server_array);
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do {
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if (ogs_yaml_iter_type(&server_array) ==
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YAML_MAPPING_NODE) {
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memcpy(&server_iter, &server_array,
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sizeof(ogs_yaml_iter_t));
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} else if (ogs_yaml_iter_type(&server_array) ==
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YAML_SEQUENCE_NODE) {
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if (!ogs_yaml_iter_next(&server_array))
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break;
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ogs_yaml_iter_recurse(
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&server_array, &server_iter);
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} else if (ogs_yaml_iter_type(&server_array) ==
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YAML_SCALAR_NODE) {
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break;
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} else
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ogs_assert_if_reached();
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while (ogs_yaml_iter_next(&server_iter)) {
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const char *server_key =
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ogs_yaml_iter_key(&server_iter);
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ogs_assert(server_key);
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if (!strcmp(server_key, "sender")) {
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sender =
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ogs_yaml_iter_value(&server_iter);
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}
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}
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} while (ogs_yaml_iter_type(&server_array) ==
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YAML_SEQUENCE_NODE);
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if (!sender) {
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ogs_error("No n32.server.sender");
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return OGS_ERROR;
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}
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if (self.sender)
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ogs_free(self.sender);
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self.sender = ogs_strdup(sender);
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if (!self.sender) {
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ogs_error("No memory for sender");
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return OGS_ERROR;
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}
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rv = ogs_sbi_context_parse_server_config(
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&sbi_iter, OGS_SBI_INTERFACE_NAME_SEPP);
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if (rv != OGS_OK) {
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ogs_error("ogs_sbi_context_parse_server_"
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"config() failed");
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return rv;
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}
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} else if (!strcmp(sbi_key, "client")) {
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ogs_yaml_iter_t client_iter;
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ogs_yaml_iter_recurse(&sbi_iter, &client_iter);
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while (ogs_yaml_iter_next(&client_iter)) {
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const char *client_key =
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ogs_yaml_iter_key(&client_iter);
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ogs_assert(client_key);
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if (!strcmp(client_key, "sepp")) {
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ogs_yaml_iter_t peer_array, peer_iter;
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ogs_yaml_iter_t saved_iter;
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ogs_yaml_iter_recurse(
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&client_iter, &peer_array);
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do {
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sepp_node_t *sepp_node = NULL;
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ogs_sbi_client_t *client = NULL;
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const char *receiver = NULL;
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const char *mnc = NULL, *mcc = NULL;
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if (ogs_yaml_iter_type(&peer_array) ==
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YAML_MAPPING_NODE) {
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memcpy(&peer_iter, &peer_array,
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sizeof(ogs_yaml_iter_t));
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} else if (ogs_yaml_iter_type(
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&peer_array) ==
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YAML_SEQUENCE_NODE) {
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if (!ogs_yaml_iter_next(&peer_array))
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break;
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ogs_yaml_iter_recurse(
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&peer_array, &peer_iter);
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} else if (ogs_yaml_iter_type(
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&peer_array) ==
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YAML_SCALAR_NODE) {
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break;
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} else
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ogs_assert_if_reached();
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memcpy(&saved_iter, &peer_iter,
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sizeof(saved_iter));
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while (ogs_yaml_iter_next(&peer_iter)) {
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const char *peer_key =
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ogs_yaml_iter_key(&peer_iter);
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ogs_assert(peer_key);
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if (!strcmp(peer_key, "receiver")) {
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receiver = ogs_yaml_iter_value(
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&peer_iter);
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} else if (!strcmp(peer_key,
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"target_plmn_id")) {
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ogs_yaml_iter_t plmn_id_iter;
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ogs_yaml_iter_recurse(
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&peer_iter,
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&plmn_id_iter);
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while (ogs_yaml_iter_next(
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&plmn_id_iter)) {
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const char *plmn_id_key =
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ogs_yaml_iter_key(
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&plmn_id_iter);
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ogs_assert(plmn_id_key);
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if (!strcmp(plmn_id_key,
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"mcc")) {
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mcc =
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ogs_yaml_iter_value(
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&plmn_id_iter);
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} else if (!strcmp(
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plmn_id_key,
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"mnc")) {
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mnc =
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ogs_yaml_iter_value(
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&plmn_id_iter);
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}
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}
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}
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}
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if (!receiver) {
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ogs_error(
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"No n32c.client.sepp.receiver");
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return OGS_ERROR;
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}
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sepp_node =
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sepp_node_find_by_receiver(
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(char *)receiver);
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if (sepp_node) {
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ogs_error("SEPP duplicated "
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"[receiver:%s]",
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receiver);
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return OGS_ERROR;
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}
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sepp_node = sepp_node_add(
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(char *)receiver);
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ogs_assert(sepp_node);
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if (mcc && mnc) {
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ogs_plmn_id_build(
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&sepp_node->target_plmn_id,
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atoi(mcc), atoi(mnc),
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strlen(mnc));
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sepp_node->
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target_plmn_id_presence =
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true;
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}
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memcpy(&peer_iter, &saved_iter,
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sizeof(peer_iter));
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client =
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ogs_sbi_context_parse_client_config(
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&peer_iter);
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if (!client) {
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ogs_error("ogs_sbi_context_parse_"
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"client_config() failed");
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sepp_node_remove(sepp_node);
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return OGS_ERROR;
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}
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OGS_SBI_SETUP_CLIENT(
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sepp_node, client);
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memcpy(&peer_iter, &saved_iter,
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sizeof(peer_iter));
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while (ogs_yaml_iter_next(&peer_iter)) {
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const char *peer_key =
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ogs_yaml_iter_key(&peer_iter);
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ogs_assert(peer_key);
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if (!strcmp(peer_key,
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OGS_SBI_INTERFACE_NAME_N32F)) {
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ogs_yaml_iter_t n32f_iter;
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ogs_yaml_iter_recurse(
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&peer_iter, &n32f_iter);
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client =
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ogs_sbi_context_parse_client_config(
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&n32f_iter);
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if (!client) {
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ogs_error(
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"ogs_sbi_context_parse_"
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"client_config() "
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"failed");
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sepp_node_remove(sepp_node);
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return OGS_ERROR;
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}
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OGS_SBI_SETUP_CLIENT(
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&sepp_node->n32f, client);
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}
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}
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} while (ogs_yaml_iter_type(&peer_array) ==
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YAML_SEQUENCE_NODE);
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}
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}
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} else
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ogs_warn("unknown key `%s`", sbi_key);
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}
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} else if (!strcmp(sepp_key, "nrf")) {
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/* handle config in sbi library */
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} else if (!strcmp(sepp_key, "scp")) {
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/* handle config in sbi library */
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} else if (!strcmp(sepp_key, "service_name")) {
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/* handle config in sbi library */
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} else if (!strcmp(sepp_key, "discovery")) {
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/* handle config in sbi library */
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} else if (!strcmp(sepp_key, "info")) {
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ogs_sbi_nf_instance_t *nf_instance = NULL;
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ogs_sbi_nf_info_t *nf_info = NULL;
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ogs_sbi_sepp_info_t *sepp_info = NULL;
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ogs_yaml_iter_t info_iter;
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ogs_yaml_iter_recurse(&sepp_iter, &info_iter);
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nf_instance = ogs_sbi_self()->nf_instance;
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ogs_assert(nf_instance);
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nf_info = ogs_sbi_nf_info_find(
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&nf_instance->nf_info_list,
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OpenAPI_nf_type_SEPP);
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ogs_assert(nf_info);
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sepp_info = &nf_info->sepp;
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while (ogs_yaml_iter_next(&info_iter)) {
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const char *info_key =
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ogs_yaml_iter_key(&info_iter);
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ogs_assert(info_key);
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if (!strcmp(info_key, "port")) {
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ogs_yaml_iter_t port_iter;
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ogs_yaml_iter_recurse(&info_iter, &port_iter);
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while (ogs_yaml_iter_next(&port_iter)) {
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const char *port_key =
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ogs_yaml_iter_key(&port_iter);
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ogs_assert(port_key);
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if (!strcmp(port_key, "http")) {
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const char *v =
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ogs_yaml_iter_value(&port_iter);
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if (v) {
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sepp_info->http.presence = true;
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sepp_info->http.port = atoi(v);
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}
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} else if (!strcmp(port_key, "https")) {
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const char *v =
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ogs_yaml_iter_value(&port_iter);
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if (v) {
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sepp_info->https.presence = true;
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sepp_info->https.port = atoi(v);
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}
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} else
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ogs_warn("unknown key `%s`", port_key);
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}
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} else
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ogs_warn("unknown key `%s`", info_key);
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}
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}
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}
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}
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}
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rv = sepp_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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sepp_node_t *sepp_node_add(char *receiver)
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{
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sepp_node_t *sepp_node = NULL;
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ogs_assert(receiver);
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ogs_pool_alloc(&sepp_node_pool, &sepp_node);
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if (!sepp_node) {
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ogs_error("Maximum number of nodeiation[%d] reached",
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max_num_of_sepp_node);
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return NULL;
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}
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memset(sepp_node, 0, sizeof *sepp_node);
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sepp_node->receiver = ogs_strdup(receiver);
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ogs_assert(sepp_node->receiver);
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ogs_list_add(&self.peer_list, sepp_node);
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return sepp_node;
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}
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void sepp_node_remove(sepp_node_t *sepp_node)
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{
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ogs_assert(sepp_node);
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ogs_list_remove(&self.peer_list, sepp_node);
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if (sepp_node->client)
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ogs_sbi_client_remove(sepp_node->client);
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if (sepp_node->n32f.client)
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ogs_sbi_client_remove(sepp_node->n32f.client);
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if (sepp_node->receiver)
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ogs_free(sepp_node->receiver);
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ogs_pool_free(&sepp_node_pool, sepp_node);
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}
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void sepp_node_remove_all(void)
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{
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sepp_node_t *sepp_node = NULL, *next_sepp_node = NULL;
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ogs_list_for_each_safe(&self.peer_list, next_sepp_node, sepp_node)
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sepp_node_remove(sepp_node);
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}
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sepp_node_t *sepp_node_find_by_receiver(char *receiver)
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{
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sepp_node_t *sepp_node = NULL;
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ogs_assert(receiver);
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ogs_list_for_each(&self.peer_list, sepp_node) {
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ogs_assert(sepp_node->receiver);
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|
if (strcmp(sepp_node->receiver, receiver) == 0) {
|
|
return sepp_node;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
sepp_node_t *sepp_node_find_by_plmn_id(uint16_t mcc, uint16_t mnc)
|
|
{
|
|
sepp_node_t *sepp_node = NULL;
|
|
|
|
ogs_assert(mcc);
|
|
ogs_assert(mnc);
|
|
|
|
ogs_list_for_each(&self.peer_list, sepp_node) {
|
|
int i;
|
|
ogs_assert(sepp_node->receiver);
|
|
for (i = 0; i < sepp_node->num_of_plmn_id; i++) {
|
|
if (mcc == ogs_plmn_id_mcc(&sepp_node->plmn_id[i]) &&
|
|
mnc == ogs_plmn_id_mnc(&sepp_node->plmn_id[i])) {
|
|
return sepp_node;
|
|
}
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
sepp_assoc_t *sepp_assoc_add(ogs_sbi_stream_t *stream)
|
|
{
|
|
sepp_assoc_t *assoc = NULL;
|
|
|
|
ogs_assert(stream);
|
|
|
|
ogs_pool_alloc(&sepp_assoc_pool, &assoc);
|
|
if (!assoc) {
|
|
ogs_error("Maximum number of association[%d] reached",
|
|
max_num_of_sepp_assoc);
|
|
return NULL;
|
|
}
|
|
memset(assoc, 0, sizeof *assoc);
|
|
|
|
assoc->stream = stream;
|
|
|
|
ogs_list_add(&self.assoc_list, assoc);
|
|
|
|
return assoc;
|
|
}
|
|
|
|
void sepp_assoc_remove(sepp_assoc_t *assoc)
|
|
{
|
|
ogs_assert(assoc);
|
|
|
|
ogs_list_remove(&self.assoc_list, assoc);
|
|
|
|
if (assoc->client)
|
|
ogs_sbi_client_remove(assoc->client);
|
|
if (assoc->nrf_client)
|
|
ogs_sbi_client_remove(assoc->nrf_client);
|
|
|
|
ogs_pool_free(&sepp_assoc_pool, assoc);
|
|
}
|
|
|
|
void sepp_assoc_remove_all(void)
|
|
{
|
|
sepp_assoc_t *assoc = NULL, *next_assoc = NULL;
|
|
|
|
ogs_list_for_each_safe(&self.assoc_list, next_assoc, assoc)
|
|
sepp_assoc_remove(assoc);
|
|
}
|