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open5gs/src/hss/hss-context.c

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/*
* Copyright (C) 2019 by Sukchan Lee <acetcom@gmail.com>
*
* This file is part of Open5GS.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include "ogs-dbi.h"
#include "hss-context.h"
static hss_context_t self;
static ogs_diam_config_t g_diam_conf;
int __hss_log_domain;
static int context_initialized = 0;
hss_context_t* hss_self(void)
{
return &self;
}
void hss_context_init(void)
{
ogs_assert(context_initialized == 0);
/* Initial FreeDiameter Config */
memset(&g_diam_conf, 0, sizeof(ogs_diam_config_t));
/* Initialize HSS context */
memset(&self, 0, sizeof(hss_context_t));
self.diam_config = &g_diam_conf;
ogs_log_install_domain(&__ogs_diam_domain, "diam", ogs_core()->log.level);
ogs_log_install_domain(&__ogs_dbi_domain, "dbi", ogs_core()->log.level);
ogs_log_install_domain(&__hss_log_domain, "hss", ogs_core()->log.level);
ogs_thread_mutex_init(&self.db_lock);
context_initialized = 1;
}
void hss_context_final(void)
{
ogs_assert(context_initialized == 1);
ogs_thread_mutex_destroy(&self.db_lock);
context_initialized = 0;
}
static int hss_context_prepare(void)
{
self.diam_config->cnf_port = DIAMETER_PORT;
self.diam_config->cnf_port_tls = DIAMETER_SECURE_PORT;
return OGS_OK;
}
static int hss_context_validation(void)
{
if (self.diam_conf_path == NULL &&
(self.diam_config->cnf_diamid == NULL ||
self.diam_config->cnf_diamrlm == NULL ||
self.diam_config->cnf_addr == NULL)) {
ogs_error("No hss.freeDiameter in '%s'", ogs_config()->file);
return OGS_ERROR;
}
return OGS_OK;
}
int hss_context_parse_config(void)
{
int rv;
yaml_document_t *document = NULL;
ogs_yaml_iter_t root_iter;
document = ogs_config()->document;
ogs_assert(document);
rv = hss_context_prepare();
if (rv != OGS_OK) return rv;
ogs_yaml_iter_init(&root_iter, document);
while (ogs_yaml_iter_next(&root_iter)) {
const char *root_key = ogs_yaml_iter_key(&root_iter);
ogs_assert(root_key);
if (!strcmp(root_key, "hss")) {
ogs_yaml_iter_t hss_iter;
ogs_yaml_iter_recurse(&root_iter, &hss_iter);
while (ogs_yaml_iter_next(&hss_iter)) {
const char *hss_key = ogs_yaml_iter_key(&hss_iter);
ogs_assert(hss_key);
if (!strcmp(hss_key, "freeDiameter")) {
yaml_node_t *node =
yaml_document_get_node(document, hss_iter.pair->value);
ogs_assert(node);
if (node->type == YAML_SCALAR_NODE) {
self.diam_conf_path = ogs_yaml_iter_value(&hss_iter);
} else if (node->type == YAML_MAPPING_NODE) {
ogs_yaml_iter_t fd_iter;
ogs_yaml_iter_recurse(&hss_iter, &fd_iter);
while (ogs_yaml_iter_next(&fd_iter)) {
const char *fd_key = ogs_yaml_iter_key(&fd_iter);
ogs_assert(fd_key);
if (!strcmp(fd_key, "identity")) {
self.diam_config->cnf_diamid =
ogs_yaml_iter_value(&fd_iter);
} else if (!strcmp(fd_key, "realm")) {
self.diam_config->cnf_diamrlm =
ogs_yaml_iter_value(&fd_iter);
} else if (!strcmp(fd_key, "port")) {
const char *v = ogs_yaml_iter_value(&fd_iter);
if (v) self.diam_config->cnf_port = atoi(v);
} else if (!strcmp(fd_key, "sec_port")) {
const char *v = ogs_yaml_iter_value(&fd_iter);
if (v) self.diam_config->cnf_port_tls = atoi(v);
} else if (!strcmp(fd_key, "listen_on")) {
self.diam_config->cnf_addr =
ogs_yaml_iter_value(&fd_iter);
} else if (!strcmp(fd_key, "load_extension")) {
ogs_yaml_iter_t ext_array, ext_iter;
ogs_yaml_iter_recurse(&fd_iter, &ext_array);
do {
const char *module = NULL;
const char *conf = NULL;
if (ogs_yaml_iter_type(&ext_array) ==
YAML_MAPPING_NODE) {
memcpy(&ext_iter, &ext_array,
sizeof(ogs_yaml_iter_t));
} else if (ogs_yaml_iter_type(&ext_array) ==
YAML_SEQUENCE_NODE) {
if (!ogs_yaml_iter_next(&ext_array))
break;
ogs_yaml_iter_recurse(
&ext_array, &ext_iter);
} else if (ogs_yaml_iter_type(&ext_array) ==
YAML_SCALAR_NODE) {
break;
} else
ogs_assert_if_reached();
while (ogs_yaml_iter_next(&ext_iter)) {
const char *ext_key =
ogs_yaml_iter_key(&ext_iter);
ogs_assert(ext_key);
if (!strcmp(ext_key, "module")) {
module = ogs_yaml_iter_value(
&ext_iter);
} else if (!strcmp(ext_key, "conf")) {
conf = ogs_yaml_iter_value(
&ext_iter);
} else
ogs_warn("unknown key `%s`",
ext_key);
}
if (module) {
self.diam_config->
ext[self.diam_config->num_of_ext].
module = module;
self.diam_config->
ext[self.diam_config->num_of_ext].
conf = conf;
self.diam_config->num_of_ext++;
}
} while (ogs_yaml_iter_type(&ext_array) ==
YAML_SEQUENCE_NODE);
} else if (!strcmp(fd_key, "connect")) {
ogs_yaml_iter_t conn_array, conn_iter;
ogs_yaml_iter_recurse(&fd_iter, &conn_array);
do {
const char *identity = NULL;
const char *addr = NULL;
uint16_t port = 0;
if (ogs_yaml_iter_type(&conn_array) ==
YAML_MAPPING_NODE) {
memcpy(&conn_iter, &conn_array,
sizeof(ogs_yaml_iter_t));
} else if (ogs_yaml_iter_type(&conn_array) ==
YAML_SEQUENCE_NODE) {
if (!ogs_yaml_iter_next(&conn_array))
break;
ogs_yaml_iter_recurse(&conn_array, &conn_iter);
} else if (ogs_yaml_iter_type(&conn_array) ==
YAML_SCALAR_NODE) {
break;
} else
ogs_assert_if_reached();
while (ogs_yaml_iter_next(&conn_iter)) {
const char *conn_key =
ogs_yaml_iter_key(&conn_iter);
ogs_assert(conn_key);
if (!strcmp(conn_key, "identity")) {
identity = ogs_yaml_iter_value(
&conn_iter);
} else if (!strcmp(conn_key, "addr")) {
addr = ogs_yaml_iter_value(&conn_iter);
} else if (!strcmp(conn_key, "port")) {
const char *v =
ogs_yaml_iter_value(&conn_iter);
if (v) port = atoi(v);
} else
ogs_warn("unknown key `%s`", conn_key);
}
if (identity && addr) {
self.diam_config->
conn[self.diam_config->num_of_conn].
identity = identity;
self.diam_config->
conn[self.diam_config->num_of_conn].
addr = addr;
self.diam_config->
conn[self.diam_config->num_of_conn].
port = port;
self.diam_config->num_of_conn++;
}
} while (ogs_yaml_iter_type(&conn_array) ==
YAML_SEQUENCE_NODE);
} else
ogs_warn("unknown key `%s`", fd_key);
}
}
} else
ogs_warn("unknown key `%s`", hss_key);
}
}
}
rv = hss_context_validation();
if (rv != OGS_OK) return rv;
return OGS_OK;
}
int hss_db_init()
{
int rv;
rv = ogs_mongoc_init(ogs_config()->db_uri);
if (rv != OGS_OK) return rv;
if (ogs_mongoc()->client && ogs_mongoc()->name) {
self.subscriberCollection = mongoc_client_get_collection(
ogs_mongoc()->client, ogs_mongoc()->name, "subscribers");
ogs_assert(self.subscriberCollection);
}
return OGS_OK;
}
int hss_db_final()
{
if (self.subscriberCollection) {
mongoc_collection_destroy(self.subscriberCollection);
}
ogs_mongoc_final();
return OGS_OK;
}
int hss_db_auth_info(
char *imsi_bcd, hss_db_auth_info_t *auth_info)
{
int rv = OGS_OK;
mongoc_cursor_t *cursor = NULL;
bson_t *query = NULL;
bson_error_t error;
const bson_t *document;
bson_iter_t iter;
bson_iter_t inner_iter;
char buf[HSS_KEY_LEN];
char *utf8 = NULL;
uint32_t length = 0;
ogs_assert(imsi_bcd);
ogs_assert(auth_info);
ogs_thread_mutex_lock(&self.db_lock);
query = BCON_NEW("imsi", BCON_UTF8(imsi_bcd));
#if MONGOC_MAJOR_VERSION >= 1 && MONGOC_MINOR_VERSION >= 5
cursor = mongoc_collection_find_with_opts(
self.subscriberCollection, query, NULL, NULL);
#else
cursor = mongoc_collection_find(self.subscriberCollection,
MONGOC_QUERY_NONE, 0, 0, 0, query, NULL, NULL);
#endif
if (!mongoc_cursor_next(cursor, &document)) {
ogs_warn("Cannot find IMSI in DB : %s", imsi_bcd);
rv = OGS_ERROR;
goto out;
}
if (mongoc_cursor_error(cursor, &error)) {
ogs_error("Cursor Failure: %s", error.message);
rv = OGS_ERROR;
goto out;
}
if (!bson_iter_init_find(&iter, document, "security")) {
ogs_error("No 'security' field in this document");
rv = OGS_ERROR;
goto out;
}
memset(auth_info, 0, sizeof(hss_db_auth_info_t));
bson_iter_recurse(&iter, &inner_iter);
while (bson_iter_next(&inner_iter)) {
const char *key = bson_iter_key(&inner_iter);
if (!strcmp(key, "k") && BSON_ITER_HOLDS_UTF8(&inner_iter)) {
utf8 = (char *)bson_iter_utf8(&inner_iter, &length);
memcpy(auth_info->k, OGS_HEX(utf8, length, buf), HSS_KEY_LEN);
} else if (!strcmp(key, "opc") && BSON_ITER_HOLDS_UTF8(&inner_iter)) {
utf8 = (char *)bson_iter_utf8(&inner_iter, &length);
auth_info->use_opc = 1;
memcpy(auth_info->opc, OGS_HEX(utf8, length, buf), HSS_KEY_LEN);
} else if (!strcmp(key, "op") && BSON_ITER_HOLDS_UTF8(&inner_iter)) {
utf8 = (char *)bson_iter_utf8(&inner_iter, &length);
memcpy(auth_info->op, OGS_HEX(utf8, length, buf), HSS_KEY_LEN);
} else if (!strcmp(key, "amf") && BSON_ITER_HOLDS_UTF8(&inner_iter)) {
utf8 = (char *)bson_iter_utf8(&inner_iter, &length);
memcpy(auth_info->amf, OGS_HEX(utf8, length, buf), HSS_AMF_LEN);
} else if (!strcmp(key, "rand") && BSON_ITER_HOLDS_UTF8(&inner_iter)) {
utf8 = (char *)bson_iter_utf8(&inner_iter, &length);
memcpy(auth_info->rand, OGS_HEX(utf8, length, buf), OGS_RAND_LEN);
} else if (!strcmp(key, "sqn") && BSON_ITER_HOLDS_INT64(&inner_iter)) {
auth_info->sqn = bson_iter_int64(&inner_iter);
}
}
out:
if (query) bson_destroy(query);
if (cursor) mongoc_cursor_destroy(cursor);
ogs_thread_mutex_unlock(&self.db_lock);
return rv;
}
int hss_db_update_rand_and_sqn(
char *imsi_bcd, uint8_t *rand, uint64_t sqn)
{
int rv = OGS_OK;
bson_t *query = NULL;
bson_t *update = NULL;
bson_error_t error;
char printable_rand[128];
ogs_assert(rand);
ogs_hex_to_ascii(rand, OGS_RAND_LEN, printable_rand, sizeof(printable_rand));
ogs_thread_mutex_lock(&self.db_lock);
query = BCON_NEW("imsi", BCON_UTF8(imsi_bcd));
update = BCON_NEW("$set",
"{",
"security.rand", printable_rand,
"security.sqn", BCON_INT64(sqn),
"}");
if (!mongoc_collection_update(self.subscriberCollection,
MONGOC_UPDATE_NONE, query, update, NULL, &error)) {
ogs_error("mongoc_collection_update() failure: %s", error.message);
rv = OGS_ERROR;
}
if (query) bson_destroy(query);
if (update) bson_destroy(update);
ogs_thread_mutex_unlock(&self.db_lock);
return rv;
}
int hss_db_increment_sqn(char *imsi_bcd)
{
int rv = OGS_OK;
bson_t *query = NULL;
bson_t *update = NULL;
bson_error_t error;
uint64_t max_sqn = HSS_MAX_SQN;
ogs_thread_mutex_lock(&self.db_lock);
query = BCON_NEW("imsi", BCON_UTF8(imsi_bcd));
update = BCON_NEW("$inc",
"{",
"security.sqn", BCON_INT64(32),
"}");
if (!mongoc_collection_update(self.subscriberCollection,
MONGOC_UPDATE_NONE, query, update, NULL, &error)) {
ogs_error("mongoc_collection_update() failure: %s", error.message);
rv = OGS_ERROR;
goto out;
}
bson_destroy(update);
update = BCON_NEW("$bit",
"{",
"security.sqn",
"{", "and", BCON_INT64(max_sqn), "}",
"}");
if (!mongoc_collection_update(self.subscriberCollection,
MONGOC_UPDATE_NONE, query, update, NULL, &error)) {
ogs_error("mongoc_collection_update() failure: %s", error.message);
rv = OGS_ERROR;
}
out:
if (query) bson_destroy(query);
if (update) bson_destroy(update);
ogs_thread_mutex_unlock(&self.db_lock);
return rv;
}
int hss_db_subscription_data(
char *imsi_bcd, ogs_diam_s6a_subscription_data_t *subscription_data)
{
int rv = OGS_OK;
mongoc_cursor_t *cursor = NULL;
bson_t *query = NULL;
bson_error_t error;
const bson_t *document;
bson_iter_t iter;
bson_iter_t child1_iter, child2_iter, child3_iter, child4_iter;
const char *utf8 = NULL;
uint32_t length = 0;
ogs_assert(imsi_bcd);
ogs_assert(subscription_data);
ogs_thread_mutex_lock(&self.db_lock);
query = BCON_NEW("imsi", BCON_UTF8(imsi_bcd));
#if MONGOC_MAJOR_VERSION >= 1 && MONGOC_MINOR_VERSION >= 5
cursor = mongoc_collection_find_with_opts(
self.subscriberCollection, query, NULL, NULL);
#else
cursor = mongoc_collection_find(self.subscriberCollection,
MONGOC_QUERY_NONE, 0, 0, 0, query, NULL, NULL);
#endif
if (!mongoc_cursor_next(cursor, &document)) {
ogs_error("Cannot find IMSI in DB : %s", imsi_bcd);
rv = OGS_ERROR;
goto out;
}
if (mongoc_cursor_error(cursor, &error)) {
ogs_error("Cursor Failure: %s", error.message);
rv = OGS_ERROR;
goto out;
}
if (!bson_iter_init(&iter, document)) {
ogs_error("bson_iter_init failed in this document");
rv = OGS_ERROR;
goto out;
}
memset(subscription_data, 0, sizeof(ogs_diam_s6a_subscription_data_t));
while (bson_iter_next(&iter)) {
const char *key = bson_iter_key(&iter);
if (!strcmp(key, "access_restriction_data") &&
BSON_ITER_HOLDS_INT32(&iter)) {
subscription_data->access_restriction_data =
bson_iter_int32(&iter);
} else if (!strcmp(key, "subscriber_status") &&
BSON_ITER_HOLDS_INT32(&iter)) {
subscription_data->subscriber_status =
bson_iter_int32(&iter);
} else if (!strcmp(key, "network_access_mode") &&
BSON_ITER_HOLDS_INT32(&iter)) {
subscription_data->network_access_mode =
bson_iter_int32(&iter);
} else if (!strcmp(key, "subscribed_rau_tau_timer") &&
BSON_ITER_HOLDS_INT32(&iter)) {
subscription_data->subscribed_rau_tau_timer =
bson_iter_int32(&iter);
} else if (!strcmp(key, "ambr") &&
BSON_ITER_HOLDS_DOCUMENT(&iter)) {
bson_iter_recurse(&iter, &child1_iter);
while (bson_iter_next(&child1_iter)) {
const char *child1_key = bson_iter_key(&child1_iter);
if (!strcmp(child1_key, "uplink") &&
BSON_ITER_HOLDS_INT64(&child1_iter)) {
subscription_data->ambr.uplink =
bson_iter_int64(&child1_iter) * 1024;
} else if (!strcmp(child1_key, "downlink") &&
BSON_ITER_HOLDS_INT64(&child1_iter)) {
subscription_data->ambr.downlink =
bson_iter_int64(&child1_iter) * 1024;
}
}
} else if (!strcmp(key, "pdn") &&
BSON_ITER_HOLDS_ARRAY(&iter)) {
int pdn_index = 0;
bson_iter_recurse(&iter, &child1_iter);
while (bson_iter_next(&child1_iter)) {
const char *child1_key = bson_iter_key(&child1_iter);
ogs_pdn_t *pdn = NULL;
ogs_assert(child1_key);
pdn_index = atoi(child1_key);
ogs_assert(pdn_index < OGS_MAX_NUM_OF_SESS);
pdn = &subscription_data->pdn[pdn_index];
bson_iter_recurse(&child1_iter, &child2_iter);
while (bson_iter_next(&child2_iter)) {
const char *child2_key = bson_iter_key(&child2_iter);
if (!strcmp(child2_key, "apn") &&
BSON_ITER_HOLDS_UTF8(&child2_iter)) {
utf8 = bson_iter_utf8(&child2_iter, &length);
ogs_cpystrn(pdn->apn, utf8,
ogs_min(length, OGS_MAX_APN_LEN)+1);
} else if (!strcmp(child2_key, "type") &&
BSON_ITER_HOLDS_INT32(&child2_iter)) {
pdn->pdn_type = bson_iter_int32(&child2_iter);
} else if (!strcmp(child2_key, "qos") &&
BSON_ITER_HOLDS_DOCUMENT(&child2_iter)) {
bson_iter_recurse(&child2_iter, &child3_iter);
while (bson_iter_next(&child3_iter)) {
const char *child3_key =
bson_iter_key(&child3_iter);
if (!strcmp(child3_key, "qci") &&
BSON_ITER_HOLDS_INT32(&child3_iter)) {
pdn->qos.qci = bson_iter_int32(&child3_iter);
} else if (!strcmp(child3_key, "arp") &&
BSON_ITER_HOLDS_DOCUMENT(&child3_iter)) {
bson_iter_recurse(&child3_iter, &child4_iter);
while (bson_iter_next(&child4_iter)) {
const char *child4_key =
bson_iter_key(&child4_iter);
if (!strcmp(child4_key, "priority_level") &&
BSON_ITER_HOLDS_INT32(&child4_iter)) {
pdn->qos.arp.priority_level =
bson_iter_int32(&child4_iter);
} else if (!strcmp(child4_key,
"pre_emption_capability") &&
BSON_ITER_HOLDS_INT32(&child4_iter)) {
pdn->qos.arp.pre_emption_capability =
bson_iter_int32(&child4_iter);
} else if (!strcmp(child4_key,
"pre_emption_vulnerability") &&
BSON_ITER_HOLDS_INT32(&child4_iter)) {
pdn->qos.arp.pre_emption_vulnerability =
bson_iter_int32(&child4_iter);
}
}
}
}
} else if (!strcmp(child2_key, "ambr") &&
BSON_ITER_HOLDS_DOCUMENT(&child2_iter)) {
bson_iter_recurse(&child2_iter, &child3_iter);
while (bson_iter_next(&child3_iter)) {
const char *child3_key =
bson_iter_key(&child3_iter);
if (!strcmp(child3_key, "uplink") &&
BSON_ITER_HOLDS_INT64(&child3_iter)) {
pdn->ambr.uplink =
bson_iter_int64(&child3_iter) * 1024;
} else if (!strcmp(child3_key, "downlink") &&
BSON_ITER_HOLDS_INT64(&child3_iter)) {
pdn->ambr.downlink =
bson_iter_int64(&child3_iter) * 1024;
}
}
} else if (!strcmp(child2_key, "pgw") &&
BSON_ITER_HOLDS_DOCUMENT(&child2_iter)) {
bson_iter_recurse(&child2_iter, &child3_iter);
while (bson_iter_next(&child3_iter)) {
const char *child3_key =
bson_iter_key(&child3_iter);
if (!strcmp(child3_key, "addr") &&
BSON_ITER_HOLDS_UTF8(&child3_iter)) {
ogs_ipsubnet_t ipsub;
const char *v =
bson_iter_utf8(&child3_iter, &length);
rv = ogs_ipsubnet(&ipsub, v, NULL);
if (rv == OGS_OK) {
pdn->pgw_ip.ipv4 = 1;
pdn->pgw_ip.both.addr = ipsub.sub[0];
}
} else if (!strcmp(child3_key, "addr6") &&
BSON_ITER_HOLDS_UTF8(&child3_iter)) {
ogs_ipsubnet_t ipsub;
const char *v =
bson_iter_utf8(&child3_iter, &length);
rv = ogs_ipsubnet(&ipsub, v, NULL);
if (rv == OGS_OK) {
pdn->pgw_ip.ipv6 = 1;
memcpy(pdn->pgw_ip.both.addr6,
ipsub.sub, sizeof(ipsub.sub));
}
}
}
} else if (!strcmp(child2_key, "ue") &&
BSON_ITER_HOLDS_DOCUMENT(&child2_iter)) {
bson_iter_recurse(&child2_iter, &child3_iter);
while (bson_iter_next(&child3_iter)) {
const char *child3_key =
bson_iter_key(&child3_iter);
if (!strcmp(child3_key, "addr") &&
BSON_ITER_HOLDS_UTF8(&child3_iter)) {
ogs_ipsubnet_t ipsub;
const char *v =
bson_iter_utf8(&child3_iter, &length);
rv = ogs_ipsubnet(&ipsub, v, NULL);
if (rv == OGS_OK) {
if (pdn->paa.pdn_type ==
OGS_GTP_PDN_TYPE_IPV6) {
pdn->paa.pdn_type =
OGS_GTP_PDN_TYPE_IPV4V6;
} else {
pdn->paa.pdn_type =
OGS_GTP_PDN_TYPE_IPV4;
}
pdn->paa.both.addr = ipsub.sub[0];
}
} else if (!strcmp(child3_key, "addr6") &&
BSON_ITER_HOLDS_UTF8(&child3_iter)) {
ogs_ipsubnet_t ipsub;
const char *v =
bson_iter_utf8(&child3_iter, &length);
rv = ogs_ipsubnet(&ipsub, v, NULL);
if (rv == OGS_OK) {
if (pdn->paa.pdn_type ==
OGS_GTP_PDN_TYPE_IPV4) {
pdn->paa.pdn_type =
OGS_GTP_PDN_TYPE_IPV4V6;
} else {
pdn->paa.pdn_type =
OGS_GTP_PDN_TYPE_IPV6;
}
memcpy(&(pdn->paa.both.addr6),
ipsub.sub, OGS_IPV6_LEN);
}
}
}
}
}
pdn_index++;
}
subscription_data->num_of_pdn = pdn_index;
}
}
out:
if (query) bson_destroy(query);
if (cursor) mongoc_cursor_destroy(cursor);
ogs_thread_mutex_unlock(&self.db_lock);
return rv;
}
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