183 lines
5 KiB
C
183 lines
5 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 "ogs-gtp.h"
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int ogs_gtp2_f_teid_to_sockaddr(
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ogs_gtp2_f_teid_t *f_teid, uint16_t port, ogs_sockaddr_t **list)
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{
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ogs_sockaddr_t *addr = NULL, *addr6 = NULL;
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ogs_assert(f_teid);
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ogs_assert(list);
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addr = ogs_calloc(1, sizeof(ogs_sockaddr_t));
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if (!addr) {
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ogs_error("ogs_calloc() failed");
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return OGS_ERROR;
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}
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addr->ogs_sa_family = AF_INET;
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addr->ogs_sin_port = htobe16(port);
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addr6 = ogs_calloc(1, sizeof(ogs_sockaddr_t));
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if (!addr6) {
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ogs_error("ogs_calloc() failed");
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ogs_free(addr);
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return OGS_ERROR;
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}
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addr6->ogs_sa_family = AF_INET6;
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addr6->ogs_sin_port = htobe16(port);
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if (f_teid->ipv4 && f_teid->ipv6) {
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addr->next = addr6;
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addr->sin.sin_addr.s_addr = f_teid->both.addr;
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memcpy(addr6->sin6.sin6_addr.s6_addr, f_teid->both.addr6, OGS_IPV6_LEN);
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*list = addr;
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} else if (f_teid->ipv4) {
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addr->sin.sin_addr.s_addr = f_teid->addr;
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ogs_free(addr6);
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*list = addr;
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} else if (f_teid->ipv6) {
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memcpy(addr6->sin6.sin6_addr.s6_addr, f_teid->addr6, OGS_IPV6_LEN);
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ogs_free(addr);
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*list = addr6;
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} else {
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ogs_error("No IPv4 or IPv6");
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ogs_free(addr);
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ogs_free(addr6);
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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 ogs_gtp2_sockaddr_to_f_teid(ogs_sockaddr_t *addr, ogs_sockaddr_t *addr6,
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ogs_gtp2_f_teid_t *f_teid, int *len)
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{
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ogs_assert(f_teid);
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if (addr && addr6) {
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f_teid->ipv4 = 1;
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f_teid->both.addr = addr->sin.sin_addr.s_addr;
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f_teid->ipv6 = 1;
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memcpy(f_teid->both.addr6, addr6->sin6.sin6_addr.s6_addr, OGS_IPV6_LEN);
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*len = OGS_GTP2_F_TEID_IPV4V6_LEN;
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} else if (addr) {
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f_teid->ipv4 = 1;
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f_teid->ipv6 = 0;
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f_teid->addr = addr->sin.sin_addr.s_addr;
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*len = OGS_GTP2_F_TEID_IPV4_LEN;
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} else if (addr6) {
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f_teid->ipv4 = 0;
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f_teid->ipv6 = 1;
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memcpy(f_teid->addr6, addr6->sin6.sin6_addr.s6_addr, OGS_IPV6_LEN);
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*len = OGS_GTP2_F_TEID_IPV6_LEN;
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} else {
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ogs_error("No IPv4 or IPv6");
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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 ogs_gtp2_f_teid_to_ip(ogs_gtp2_f_teid_t *f_teid, ogs_ip_t *ip)
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{
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ogs_assert(ip);
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ogs_assert(f_teid);
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memset(ip, 0, sizeof(ogs_ip_t));
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ip->ipv4 = f_teid->ipv4;
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ip->ipv6 = f_teid->ipv6;
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if (ip->ipv4 && ip->ipv6) {
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ip->addr = f_teid->both.addr;
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memcpy(ip->addr6, f_teid->both.addr6, OGS_IPV6_LEN);
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ip->len = OGS_IPV4V6_LEN;
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} else if (ip->ipv4) {
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ip->addr = f_teid->addr;
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ip->len = OGS_IPV4_LEN;
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} else if (ip->ipv6) {
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memcpy(ip->addr6, f_teid->addr6, OGS_IPV6_LEN);
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ip->len = OGS_IPV6_LEN;
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} else {
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ogs_error("No IPv4 or IPv6");
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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 ogs_gtp2_ip_to_f_teid(ogs_ip_t *ip, ogs_gtp2_f_teid_t *f_teid, int *len)
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{
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ogs_assert(ip);
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ogs_assert(f_teid);
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f_teid->ipv4 = ip->ipv4;
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f_teid->ipv6 = ip->ipv6;
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if (f_teid->ipv4 && f_teid->ipv6) {
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f_teid->both.addr = ip->addr;
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memcpy(f_teid->both.addr6, ip->addr6, OGS_IPV6_LEN);
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*len = OGS_GTP2_F_TEID_IPV4V6_LEN;
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} else if (f_teid->ipv4) {
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f_teid->addr = ip->addr;
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*len = OGS_GTP2_F_TEID_IPV4_LEN;
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} else if (f_teid->ipv6) {
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memcpy(f_teid->addr6, ip->addr6, OGS_IPV6_LEN);
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*len = OGS_GTP2_F_TEID_IPV6_LEN;
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} else {
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ogs_error("No IPv4 or IPv6");
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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 ogs_gtp2_paa_to_ip(ogs_paa_t *paa, ogs_ip_t *ip)
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{
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ogs_assert(paa);
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ogs_assert(ip);
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memset(ip, 0, sizeof *ip);
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if (paa->session_type == OGS_PDU_SESSION_TYPE_IPV4V6) {
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ip->ipv4 = 1;
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ip->addr = paa->both.addr;
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ip->ipv6 = 1;
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memcpy(ip->addr6, paa->both.addr6, OGS_IPV6_LEN);
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} else if (paa->session_type == OGS_PDU_SESSION_TYPE_IPV4) {
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ip->ipv4 = 1;
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ip->ipv6 = 0;
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ip->addr = paa->addr;
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} else if (paa->session_type == OGS_PDU_SESSION_TYPE_IPV6) {
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ip->ipv4 = 0;
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ip->ipv6 = 1;
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memcpy(ip->addr6, paa->addr6, OGS_IPV6_LEN);
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} else {
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ogs_error("No IPv4 or IPv6");
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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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