2016-08-13 16:09:49 +00:00
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/*-
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2023-05-10 15:40:58 +00:00
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* SPDX-License-Identifier: BSD-2-Clause
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2019-03-18 10:50:32 +00:00
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*
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* Copyright (c) 2015-2019 Yandex LLC
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2016-08-13 16:09:49 +00:00
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* Copyright (c) 2015-2016 Alexander V. Chernikov <melifaro@FreeBSD.org>
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2019-03-18 10:50:32 +00:00
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* Copyright (c) 2015-2019 Andrey V. Elsukov <ae@FreeBSD.org>
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2016-08-13 16:09:49 +00:00
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include <sys/socket.h>
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#include "ipfw2.h"
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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2016-08-14 13:17:55 +00:00
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#include <inttypes.h>
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2016-08-13 16:09:49 +00:00
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#include <netdb.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sysexits.h>
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#include <net/if.h>
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#include <netinet/in.h>
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#include <netinet/ip_fw.h>
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#include <netinet6/ip_fw_nat64.h>
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#include <arpa/inet.h>
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static void nat64lsn_fill_ntlv(ipfw_obj_ntlv *ntlv, const char *name,
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uint8_t set);
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typedef int (nat64lsn_cb_t)(ipfw_nat64lsn_cfg *cfg, const char *name,
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uint8_t set);
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static int nat64lsn_foreach(nat64lsn_cb_t *f, const char *name, uint8_t set,
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int sort);
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static void nat64lsn_create(const char *name, uint8_t set, int ac, char **av);
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static void nat64lsn_config(const char *name, uint8_t set, int ac, char **av);
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static void nat64lsn_destroy(const char *name, uint8_t set);
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static void nat64lsn_stats(const char *name, uint8_t set);
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static void nat64lsn_reset_stats(const char *name, uint8_t set);
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static int nat64lsn_show_cb(ipfw_nat64lsn_cfg *cfg, const char *name,
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uint8_t set);
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static int nat64lsn_destroy_cb(ipfw_nat64lsn_cfg *cfg, const char *name,
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uint8_t set);
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static int nat64lsn_states_cb(ipfw_nat64lsn_cfg *cfg, const char *name,
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uint8_t set);
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static struct _s_x nat64cmds[] = {
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{ "create", TOK_CREATE },
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{ "config", TOK_CONFIG },
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{ "destroy", TOK_DESTROY },
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{ "list", TOK_LIST },
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{ "show", TOK_LIST },
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{ "stats", TOK_STATS },
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{ NULL, 0 }
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};
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static uint64_t
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nat64lsn_print_states(void *buf)
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{
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char s[INET6_ADDRSTRLEN], a[INET_ADDRSTRLEN], f[INET_ADDRSTRLEN];
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2020-07-13 17:51:04 +00:00
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const char *proto;
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char sflags[4], *sf;
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2016-08-13 16:09:49 +00:00
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ipfw_obj_header *oh;
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ipfw_obj_data *od;
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2019-03-19 10:57:03 +00:00
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ipfw_nat64lsn_stg_v1 *stg;
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ipfw_nat64lsn_state_v1 *ste;
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2016-08-13 16:09:49 +00:00
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uint64_t next_idx;
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2020-07-13 17:51:04 +00:00
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uint32_t i;
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int sz;
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2016-08-13 16:09:49 +00:00
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oh = (ipfw_obj_header *)buf;
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od = (ipfw_obj_data *)(oh + 1);
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2019-03-19 10:57:03 +00:00
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stg = (ipfw_nat64lsn_stg_v1 *)(od + 1);
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2016-08-13 16:09:49 +00:00
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sz = od->head.length - sizeof(*od);
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next_idx = 0;
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2020-07-14 05:07:16 +00:00
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proto = NULL;
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2016-08-13 16:09:49 +00:00
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while (sz > 0 && next_idx != 0xFF) {
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2019-03-19 10:57:03 +00:00
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next_idx = stg->next.index;
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2016-08-13 16:09:49 +00:00
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sz -= sizeof(*stg);
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if (stg->count == 0) {
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stg++;
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continue;
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}
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2019-03-19 10:57:03 +00:00
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/*
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* NOTE: addresses are in network byte order,
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* ports are in host byte order.
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*/
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2016-08-13 16:09:49 +00:00
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inet_ntop(AF_INET, &stg->alias4, a, sizeof(a));
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2019-03-19 10:57:03 +00:00
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ste = (ipfw_nat64lsn_state_v1 *)(stg + 1);
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2016-08-13 16:09:49 +00:00
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for (i = 0; i < stg->count && sz > 0; i++) {
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sf = sflags;
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2019-03-19 10:57:03 +00:00
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inet_ntop(AF_INET6, &ste->host6, s, sizeof(s));
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2016-08-13 16:09:49 +00:00
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inet_ntop(AF_INET, &ste->daddr, f, sizeof(f));
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2019-03-19 10:57:03 +00:00
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switch (ste->proto) {
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case IPPROTO_TCP:
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proto = "TCP";
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2016-08-13 16:09:49 +00:00
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if (ste->flags & 0x02)
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*sf++ = 'S';
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if (ste->flags & 0x04)
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*sf++ = 'E';
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if (ste->flags & 0x01)
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*sf++ = 'F';
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2019-03-19 10:57:03 +00:00
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break;
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case IPPROTO_UDP:
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proto = "UDP";
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break;
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case IPPROTO_ICMP:
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proto = "ICMPv6";
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break;
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2016-08-13 16:09:49 +00:00
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}
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*sf = '\0';
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2019-03-19 10:57:03 +00:00
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switch (ste->proto) {
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2016-08-13 16:09:49 +00:00
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case IPPROTO_TCP:
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case IPPROTO_UDP:
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printf("%s:%d\t%s:%d\t%s\t%s\t%d\t%s:%d\n",
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s, ste->sport, a, ste->aport, proto,
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sflags, ste->idle, f, ste->dport);
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break;
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2019-03-19 10:57:03 +00:00
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case IPPROTO_ICMP:
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2016-08-13 16:09:49 +00:00
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printf("%s\t%s\t%s\t\t%d\t%s\n",
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s, a, proto, ste->idle, f);
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break;
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default:
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printf("%s\t%s\t%d\t\t%d\t%s\n",
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2019-03-19 10:57:03 +00:00
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s, a, ste->proto, ste->idle, f);
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2016-08-13 16:09:49 +00:00
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}
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ste++;
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sz -= sizeof(*ste);
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}
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2019-03-19 10:57:03 +00:00
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stg = (ipfw_nat64lsn_stg_v1 *)ste;
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2016-08-13 16:09:49 +00:00
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}
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return (next_idx);
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}
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static int
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nat64lsn_states_cb(ipfw_nat64lsn_cfg *cfg, const char *name, uint8_t set)
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{
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ipfw_obj_header *oh;
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ipfw_obj_data *od;
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void *buf;
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uint64_t next_idx;
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size_t sz;
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if (name != NULL && strcmp(cfg->name, name) != 0)
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return (ESRCH);
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if (set != 0 && cfg->set != set)
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return (ESRCH);
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next_idx = 0;
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sz = 4096;
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if ((buf = calloc(1, sz)) == NULL)
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err(EX_OSERR, NULL);
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do {
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oh = (ipfw_obj_header *)buf;
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2019-03-19 10:57:03 +00:00
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oh->opheader.version = 1; /* Force using ov new API */
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2016-08-13 16:09:49 +00:00
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od = (ipfw_obj_data *)(oh + 1);
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nat64lsn_fill_ntlv(&oh->ntlv, cfg->name, set);
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od->head.type = IPFW_TLV_OBJDATA;
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od->head.length = sizeof(*od) + sizeof(next_idx);
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*((uint64_t *)(od + 1)) = next_idx;
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if (do_get3(IP_FW_NAT64LSN_LIST_STATES, &oh->opheader, &sz))
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err(EX_OSERR, "Error reading nat64lsn states");
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next_idx = nat64lsn_print_states(buf);
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sz = 4096;
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memset(buf, 0, sz);
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} while (next_idx != 0xFF);
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free(buf);
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return (0);
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}
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static struct _s_x nat64statscmds[] = {
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{ "reset", TOK_RESET },
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{ NULL, 0 }
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};
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static void
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ipfw_nat64lsn_stats_handler(const char *name, uint8_t set, int ac, char *av[])
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{
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int tcmd;
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if (ac == 0) {
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nat64lsn_stats(name, set);
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return;
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}
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NEED1("nat64lsn stats needs command");
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tcmd = get_token(nat64statscmds, *av, "nat64lsn stats command");
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switch (tcmd) {
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case TOK_RESET:
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nat64lsn_reset_stats(name, set);
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}
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}
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static struct _s_x nat64listcmds[] = {
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{ "states", TOK_STATES },
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{ "config", TOK_CONFIG },
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{ NULL, 0 }
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};
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static void
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ipfw_nat64lsn_list_handler(const char *name, uint8_t set, int ac, char *av[])
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{
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int tcmd;
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if (ac == 0) {
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nat64lsn_foreach(nat64lsn_show_cb, name, set, 1);
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return;
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}
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NEED1("nat64lsn list needs command");
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tcmd = get_token(nat64listcmds, *av, "nat64lsn list command");
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switch (tcmd) {
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case TOK_STATES:
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nat64lsn_foreach(nat64lsn_states_cb, name, set, 1);
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break;
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case TOK_CONFIG:
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nat64lsn_foreach(nat64lsn_show_cb, name, set, 1);
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}
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}
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/*
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* This one handles all nat64lsn-related commands
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* ipfw [set N] nat64lsn NAME {create | config} ...
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* ipfw [set N] nat64lsn NAME stats
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* ipfw [set N] nat64lsn {NAME | all} destroy
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* ipfw [set N] nat64lsn {NAME | all} {list | show} [config | states]
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*/
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#define nat64lsn_check_name table_check_name
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void
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ipfw_nat64lsn_handler(int ac, char *av[])
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{
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const char *name;
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int tcmd;
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uint8_t set;
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2020-07-13 17:51:04 +00:00
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if (g_co.use_set != 0)
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set = g_co.use_set - 1;
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2016-08-13 16:09:49 +00:00
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else
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set = 0;
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ac--; av++;
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NEED1("nat64lsn needs instance name");
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name = *av;
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if (nat64lsn_check_name(name) != 0) {
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if (strcmp(name, "all") == 0)
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name = NULL;
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else
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errx(EX_USAGE, "nat64lsn instance name %s is invalid",
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name);
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}
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ac--; av++;
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NEED1("nat64lsn needs command");
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tcmd = get_token(nat64cmds, *av, "nat64lsn command");
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if (name == NULL && tcmd != TOK_DESTROY && tcmd != TOK_LIST)
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errx(EX_USAGE, "nat64lsn instance name required");
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switch (tcmd) {
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case TOK_CREATE:
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ac--; av++;
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nat64lsn_create(name, set, ac, av);
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break;
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case TOK_CONFIG:
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ac--; av++;
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nat64lsn_config(name, set, ac, av);
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break;
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case TOK_LIST:
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ac--; av++;
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ipfw_nat64lsn_list_handler(name, set, ac, av);
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break;
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case TOK_DESTROY:
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if (name == NULL)
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nat64lsn_foreach(nat64lsn_destroy_cb, NULL, set, 0);
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else
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nat64lsn_destroy(name, set);
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break;
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case TOK_STATS:
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ac--; av++;
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ipfw_nat64lsn_stats_handler(name, set, ac, av);
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}
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}
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static void
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nat64lsn_fill_ntlv(ipfw_obj_ntlv *ntlv, const char *name, uint8_t set)
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{
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ntlv->head.type = IPFW_TLV_EACTION_NAME(1); /* it doesn't matter */
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ntlv->head.length = sizeof(ipfw_obj_ntlv);
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ntlv->idx = 1;
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ntlv->set = set;
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strlcpy(ntlv->name, name, sizeof(ntlv->name));
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}
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static void
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nat64lsn_apply_mask(int af, void *prefix, uint16_t plen)
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{
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struct in6_addr mask6, *p6;
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struct in_addr mask4, *p4;
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if (af == AF_INET) {
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p4 = (struct in_addr *)prefix;
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|
|
mask4.s_addr = htonl(~((1 << (32 - plen)) - 1));
|
|
|
|
p4->s_addr &= mask4.s_addr;
|
|
|
|
} else if (af == AF_INET6) {
|
|
|
|
p6 = (struct in6_addr *)prefix;
|
|
|
|
n2mask(&mask6, plen);
|
|
|
|
APPLY_MASK(p6, &mask6);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
nat64lsn_parse_prefix(const char *arg, int af, void *prefix, uint16_t *plen)
|
|
|
|
{
|
|
|
|
char *p, *l;
|
|
|
|
|
|
|
|
p = strdup(arg);
|
|
|
|
if (p == NULL)
|
|
|
|
err(EX_OSERR, NULL);
|
|
|
|
if ((l = strchr(p, '/')) != NULL)
|
|
|
|
*l++ = '\0';
|
|
|
|
if (l == NULL)
|
|
|
|
errx(EX_USAGE, "Prefix length required");
|
|
|
|
if (inet_pton(af, p, prefix) != 1)
|
|
|
|
errx(EX_USAGE, "Bad prefix: %s", p);
|
|
|
|
*plen = (uint16_t)strtol(l, &l, 10);
|
|
|
|
if (*l != '\0' || *plen == 0 || (af == AF_INET && *plen > 32) ||
|
|
|
|
(af == AF_INET6 && *plen > 96))
|
|
|
|
errx(EX_USAGE, "Bad prefix length: %s", arg);
|
|
|
|
nat64lsn_apply_mask(af, prefix, *plen);
|
|
|
|
free(p);
|
|
|
|
}
|
|
|
|
|
|
|
|
static uint32_t
|
|
|
|
nat64lsn_parse_int(const char *arg, const char *desc)
|
|
|
|
{
|
|
|
|
char *p;
|
|
|
|
uint32_t val;
|
|
|
|
|
|
|
|
val = (uint32_t)strtol(arg, &p, 10);
|
|
|
|
if (*p != '\0')
|
|
|
|
errx(EX_USAGE, "Invalid %s value: %s\n", desc, arg);
|
|
|
|
return (val);
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct _s_x nat64newcmds[] = {
|
|
|
|
{ "prefix6", TOK_PREFIX6 },
|
|
|
|
{ "jmaxlen", TOK_JMAXLEN },
|
|
|
|
{ "prefix4", TOK_PREFIX4 },
|
|
|
|
{ "host_del_age", TOK_HOST_DEL_AGE },
|
|
|
|
{ "pg_del_age", TOK_PG_DEL_AGE },
|
|
|
|
{ "tcp_syn_age", TOK_TCP_SYN_AGE },
|
|
|
|
{ "tcp_close_age",TOK_TCP_CLOSE_AGE },
|
|
|
|
{ "tcp_est_age", TOK_TCP_EST_AGE },
|
|
|
|
{ "udp_age", TOK_UDP_AGE },
|
|
|
|
{ "icmp_age", TOK_ICMP_AGE },
|
2019-03-19 10:57:03 +00:00
|
|
|
{ "states_chunks",TOK_STATES_CHUNKS },
|
2016-08-13 16:09:49 +00:00
|
|
|
{ "log", TOK_LOG },
|
|
|
|
{ "-log", TOK_LOGOFF },
|
2019-03-18 10:39:14 +00:00
|
|
|
{ "allow_private", TOK_PRIVATE },
|
|
|
|
{ "-allow_private", TOK_PRIVATEOFF },
|
2019-03-19 10:57:03 +00:00
|
|
|
/* for compatibility with old configurations */
|
|
|
|
{ "max_ports", TOK_MAX_PORTS }, /* unused */
|
2016-08-13 16:09:49 +00:00
|
|
|
{ NULL, 0 }
|
|
|
|
};
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Creates new nat64lsn instance
|
|
|
|
* ipfw nat64lsn <NAME> create
|
|
|
|
* [ max_ports <N> ]
|
|
|
|
* Request: [ ipfw_obj_lheader ipfw_nat64lsn_cfg ]
|
|
|
|
*/
|
|
|
|
#define NAT64LSN_HAS_PREFIX4 0x01
|
|
|
|
#define NAT64LSN_HAS_PREFIX6 0x02
|
|
|
|
static void
|
|
|
|
nat64lsn_create(const char *name, uint8_t set, int ac, char **av)
|
|
|
|
{
|
|
|
|
char buf[sizeof(ipfw_obj_lheader) + sizeof(ipfw_nat64lsn_cfg)];
|
|
|
|
ipfw_nat64lsn_cfg *cfg;
|
|
|
|
ipfw_obj_lheader *olh;
|
|
|
|
int tcmd, flags;
|
|
|
|
char *opt;
|
|
|
|
|
|
|
|
memset(&buf, 0, sizeof(buf));
|
|
|
|
olh = (ipfw_obj_lheader *)buf;
|
|
|
|
cfg = (ipfw_nat64lsn_cfg *)(olh + 1);
|
|
|
|
|
|
|
|
/* Some reasonable defaults */
|
|
|
|
inet_pton(AF_INET6, "64:ff9b::", &cfg->prefix6);
|
|
|
|
cfg->plen6 = 96;
|
|
|
|
cfg->set = set;
|
|
|
|
cfg->max_ports = NAT64LSN_MAX_PORTS;
|
|
|
|
cfg->jmaxlen = NAT64LSN_JMAXLEN;
|
|
|
|
cfg->nh_delete_delay = NAT64LSN_HOST_AGE;
|
|
|
|
cfg->pg_delete_delay = NAT64LSN_PG_AGE;
|
|
|
|
cfg->st_syn_ttl = NAT64LSN_TCP_SYN_AGE;
|
|
|
|
cfg->st_estab_ttl = NAT64LSN_TCP_EST_AGE;
|
|
|
|
cfg->st_close_ttl = NAT64LSN_TCP_FIN_AGE;
|
|
|
|
cfg->st_udp_ttl = NAT64LSN_UDP_AGE;
|
|
|
|
cfg->st_icmp_ttl = NAT64LSN_ICMP_AGE;
|
|
|
|
flags = NAT64LSN_HAS_PREFIX6;
|
|
|
|
while (ac > 0) {
|
|
|
|
tcmd = get_token(nat64newcmds, *av, "option");
|
|
|
|
opt = *av;
|
|
|
|
ac--; av++;
|
|
|
|
|
|
|
|
switch (tcmd) {
|
|
|
|
case TOK_PREFIX4:
|
|
|
|
NEED1("IPv4 prefix required");
|
|
|
|
nat64lsn_parse_prefix(*av, AF_INET, &cfg->prefix4,
|
|
|
|
&cfg->plen4);
|
|
|
|
flags |= NAT64LSN_HAS_PREFIX4;
|
|
|
|
ac--; av++;
|
|
|
|
break;
|
|
|
|
case TOK_PREFIX6:
|
|
|
|
NEED1("IPv6 prefix required");
|
|
|
|
nat64lsn_parse_prefix(*av, AF_INET6, &cfg->prefix6,
|
|
|
|
&cfg->plen6);
|
2018-05-09 11:59:24 +00:00
|
|
|
if (ipfw_check_nat64prefix(&cfg->prefix6,
|
2019-03-19 10:57:03 +00:00
|
|
|
cfg->plen6) != 0 &&
|
|
|
|
!IN6_IS_ADDR_UNSPECIFIED(&cfg->prefix6))
|
2018-05-09 11:59:24 +00:00
|
|
|
errx(EX_USAGE, "Bad prefix6 %s", *av);
|
|
|
|
|
2016-08-13 16:09:49 +00:00
|
|
|
ac--; av++;
|
|
|
|
break;
|
|
|
|
case TOK_JMAXLEN:
|
|
|
|
NEED1("job queue length required");
|
|
|
|
cfg->jmaxlen = nat64lsn_parse_int(*av, opt);
|
|
|
|
ac--; av++;
|
|
|
|
break;
|
|
|
|
case TOK_MAX_PORTS:
|
|
|
|
NEED1("Max per-user ports required");
|
|
|
|
cfg->max_ports = nat64lsn_parse_int(*av, opt);
|
|
|
|
ac--; av++;
|
|
|
|
break;
|
|
|
|
case TOK_HOST_DEL_AGE:
|
|
|
|
NEED1("host delete delay required");
|
|
|
|
cfg->nh_delete_delay = (uint16_t)nat64lsn_parse_int(
|
|
|
|
*av, opt);
|
|
|
|
ac--; av++;
|
|
|
|
break;
|
|
|
|
case TOK_PG_DEL_AGE:
|
|
|
|
NEED1("portgroup delete delay required");
|
|
|
|
cfg->pg_delete_delay = (uint16_t)nat64lsn_parse_int(
|
|
|
|
*av, opt);
|
|
|
|
ac--; av++;
|
|
|
|
break;
|
|
|
|
case TOK_TCP_SYN_AGE:
|
|
|
|
NEED1("tcp syn age required");
|
|
|
|
cfg->st_syn_ttl = (uint16_t)nat64lsn_parse_int(
|
|
|
|
*av, opt);
|
|
|
|
ac--; av++;
|
|
|
|
break;
|
|
|
|
case TOK_TCP_CLOSE_AGE:
|
|
|
|
NEED1("tcp close age required");
|
|
|
|
cfg->st_close_ttl = (uint16_t)nat64lsn_parse_int(
|
|
|
|
*av, opt);
|
|
|
|
ac--; av++;
|
|
|
|
break;
|
|
|
|
case TOK_TCP_EST_AGE:
|
|
|
|
NEED1("tcp est age required");
|
|
|
|
cfg->st_estab_ttl = (uint16_t)nat64lsn_parse_int(
|
|
|
|
*av, opt);
|
|
|
|
ac--; av++;
|
|
|
|
break;
|
|
|
|
case TOK_UDP_AGE:
|
|
|
|
NEED1("udp age required");
|
|
|
|
cfg->st_udp_ttl = (uint16_t)nat64lsn_parse_int(
|
|
|
|
*av, opt);
|
|
|
|
ac--; av++;
|
|
|
|
break;
|
|
|
|
case TOK_ICMP_AGE:
|
|
|
|
NEED1("icmp age required");
|
|
|
|
cfg->st_icmp_ttl = (uint16_t)nat64lsn_parse_int(
|
|
|
|
*av, opt);
|
|
|
|
ac--; av++;
|
|
|
|
break;
|
2019-03-19 10:57:03 +00:00
|
|
|
case TOK_STATES_CHUNKS:
|
|
|
|
NEED1("number of chunks required");
|
|
|
|
cfg->states_chunks = (uint8_t)nat64lsn_parse_int(
|
|
|
|
*av, opt);
|
|
|
|
ac--; av++;
|
|
|
|
break;
|
2016-08-13 16:09:49 +00:00
|
|
|
case TOK_LOG:
|
|
|
|
cfg->flags |= NAT64_LOG;
|
|
|
|
break;
|
|
|
|
case TOK_LOGOFF:
|
|
|
|
cfg->flags &= ~NAT64_LOG;
|
|
|
|
break;
|
2019-03-18 10:39:14 +00:00
|
|
|
case TOK_PRIVATE:
|
|
|
|
cfg->flags |= NAT64_ALLOW_PRIVATE;
|
|
|
|
break;
|
|
|
|
case TOK_PRIVATEOFF:
|
|
|
|
cfg->flags &= ~NAT64_ALLOW_PRIVATE;
|
|
|
|
break;
|
2016-08-13 16:09:49 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Check validness */
|
|
|
|
if ((flags & NAT64LSN_HAS_PREFIX4) != NAT64LSN_HAS_PREFIX4)
|
|
|
|
errx(EX_USAGE, "prefix4 required");
|
|
|
|
|
|
|
|
olh->count = 1;
|
|
|
|
olh->objsize = sizeof(*cfg);
|
|
|
|
olh->size = sizeof(buf);
|
|
|
|
strlcpy(cfg->name, name, sizeof(cfg->name));
|
|
|
|
if (do_set3(IP_FW_NAT64LSN_CREATE, &olh->opheader, sizeof(buf)) != 0)
|
|
|
|
err(EX_OSERR, "nat64lsn instance creation failed");
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Configures existing nat64lsn instance
|
|
|
|
* ipfw nat64lsn <NAME> config <options>
|
|
|
|
* Request: [ ipfw_obj_header ipfw_nat64lsn_cfg ]
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
nat64lsn_config(const char *name, uint8_t set, int ac, char **av)
|
|
|
|
{
|
|
|
|
char buf[sizeof(ipfw_obj_header) + sizeof(ipfw_nat64lsn_cfg)];
|
|
|
|
ipfw_nat64lsn_cfg *cfg;
|
|
|
|
ipfw_obj_header *oh;
|
|
|
|
size_t sz;
|
|
|
|
char *opt;
|
|
|
|
int tcmd;
|
|
|
|
|
|
|
|
if (ac == 0)
|
|
|
|
errx(EX_USAGE, "config options required");
|
|
|
|
memset(&buf, 0, sizeof(buf));
|
|
|
|
oh = (ipfw_obj_header *)buf;
|
|
|
|
cfg = (ipfw_nat64lsn_cfg *)(oh + 1);
|
|
|
|
sz = sizeof(buf);
|
|
|
|
|
|
|
|
nat64lsn_fill_ntlv(&oh->ntlv, name, set);
|
|
|
|
if (do_get3(IP_FW_NAT64LSN_CONFIG, &oh->opheader, &sz) != 0)
|
|
|
|
err(EX_OSERR, "failed to get config for instance %s", name);
|
|
|
|
|
|
|
|
while (ac > 0) {
|
|
|
|
tcmd = get_token(nat64newcmds, *av, "option");
|
|
|
|
opt = *av;
|
|
|
|
ac--; av++;
|
|
|
|
|
|
|
|
switch (tcmd) {
|
|
|
|
case TOK_MAX_PORTS:
|
|
|
|
NEED1("Max per-user ports required");
|
|
|
|
cfg->max_ports = nat64lsn_parse_int(*av, opt);
|
|
|
|
ac--; av++;
|
|
|
|
break;
|
|
|
|
case TOK_JMAXLEN:
|
|
|
|
NEED1("job queue length required");
|
|
|
|
cfg->jmaxlen = nat64lsn_parse_int(*av, opt);
|
|
|
|
ac--; av++;
|
|
|
|
break;
|
|
|
|
case TOK_HOST_DEL_AGE:
|
|
|
|
NEED1("host delete delay required");
|
|
|
|
cfg->nh_delete_delay = (uint16_t)nat64lsn_parse_int(
|
|
|
|
*av, opt);
|
|
|
|
ac--; av++;
|
|
|
|
break;
|
|
|
|
case TOK_PG_DEL_AGE:
|
|
|
|
NEED1("portgroup delete delay required");
|
|
|
|
cfg->pg_delete_delay = (uint16_t)nat64lsn_parse_int(
|
|
|
|
*av, opt);
|
|
|
|
ac--; av++;
|
|
|
|
break;
|
|
|
|
case TOK_TCP_SYN_AGE:
|
|
|
|
NEED1("tcp syn age required");
|
|
|
|
cfg->st_syn_ttl = (uint16_t)nat64lsn_parse_int(
|
|
|
|
*av, opt);
|
|
|
|
ac--; av++;
|
|
|
|
break;
|
|
|
|
case TOK_TCP_CLOSE_AGE:
|
|
|
|
NEED1("tcp close age required");
|
|
|
|
cfg->st_close_ttl = (uint16_t)nat64lsn_parse_int(
|
|
|
|
*av, opt);
|
|
|
|
ac--; av++;
|
|
|
|
break;
|
|
|
|
case TOK_TCP_EST_AGE:
|
|
|
|
NEED1("tcp est age required");
|
|
|
|
cfg->st_estab_ttl = (uint16_t)nat64lsn_parse_int(
|
|
|
|
*av, opt);
|
|
|
|
ac--; av++;
|
|
|
|
break;
|
|
|
|
case TOK_UDP_AGE:
|
|
|
|
NEED1("udp age required");
|
|
|
|
cfg->st_udp_ttl = (uint16_t)nat64lsn_parse_int(
|
|
|
|
*av, opt);
|
|
|
|
ac--; av++;
|
|
|
|
break;
|
|
|
|
case TOK_ICMP_AGE:
|
|
|
|
NEED1("icmp age required");
|
|
|
|
cfg->st_icmp_ttl = (uint16_t)nat64lsn_parse_int(
|
|
|
|
*av, opt);
|
|
|
|
ac--; av++;
|
|
|
|
break;
|
2019-03-19 10:57:03 +00:00
|
|
|
case TOK_STATES_CHUNKS:
|
|
|
|
NEED1("number of chunks required");
|
|
|
|
cfg->states_chunks = (uint8_t)nat64lsn_parse_int(
|
|
|
|
*av, opt);
|
|
|
|
ac--; av++;
|
|
|
|
break;
|
2016-08-13 16:09:49 +00:00
|
|
|
case TOK_LOG:
|
|
|
|
cfg->flags |= NAT64_LOG;
|
|
|
|
break;
|
|
|
|
case TOK_LOGOFF:
|
|
|
|
cfg->flags &= ~NAT64_LOG;
|
|
|
|
break;
|
2019-03-18 10:39:14 +00:00
|
|
|
case TOK_PRIVATE:
|
|
|
|
cfg->flags |= NAT64_ALLOW_PRIVATE;
|
|
|
|
break;
|
|
|
|
case TOK_PRIVATEOFF:
|
|
|
|
cfg->flags &= ~NAT64_ALLOW_PRIVATE;
|
|
|
|
break;
|
2016-08-13 16:09:49 +00:00
|
|
|
default:
|
|
|
|
errx(EX_USAGE, "Can't change %s option", opt);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
if (do_set3(IP_FW_NAT64LSN_CONFIG, &oh->opheader, sizeof(buf)) != 0)
|
|
|
|
err(EX_OSERR, "nat64lsn instance configuration failed");
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Reset nat64lsn instance statistics specified by @oh->ntlv.
|
|
|
|
* Request: [ ipfw_obj_header ]
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
nat64lsn_reset_stats(const char *name, uint8_t set)
|
|
|
|
{
|
|
|
|
ipfw_obj_header oh;
|
|
|
|
|
|
|
|
memset(&oh, 0, sizeof(oh));
|
|
|
|
nat64lsn_fill_ntlv(&oh.ntlv, name, set);
|
|
|
|
if (do_set3(IP_FW_NAT64LSN_RESET_STATS, &oh.opheader, sizeof(oh)) != 0)
|
|
|
|
err(EX_OSERR, "failed to reset stats for instance %s", name);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Destroys nat64lsn instance specified by @oh->ntlv.
|
|
|
|
* Request: [ ipfw_obj_header ]
|
|
|
|
*/
|
|
|
|
static void
|
|
|
|
nat64lsn_destroy(const char *name, uint8_t set)
|
|
|
|
{
|
|
|
|
ipfw_obj_header oh;
|
|
|
|
|
|
|
|
memset(&oh, 0, sizeof(oh));
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|
|
|
nat64lsn_fill_ntlv(&oh.ntlv, name, set);
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|
|
if (do_set3(IP_FW_NAT64LSN_DESTROY, &oh.opheader, sizeof(oh)) != 0)
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|
|
err(EX_OSERR, "failed to destroy nat instance %s", name);
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|
|
|
}
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|
|
|
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|
|
|
/*
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|
|
* Get nat64lsn instance statistics.
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|
|
* Request: [ ipfw_obj_header ]
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|
|
* Reply: [ ipfw_obj_header ipfw_obj_ctlv [ uint64_t x N ] ]
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|
|
|
*/
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|
|
|
static int
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|
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nat64lsn_get_stats(const char *name, uint8_t set,
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|
|
struct ipfw_nat64lsn_stats *stats)
|
|
|
|
{
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|
|
ipfw_obj_header *oh;
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|
|
ipfw_obj_ctlv *oc;
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|
|
size_t sz;
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|
|
sz = sizeof(*oh) + sizeof(*oc) + sizeof(*stats);
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|
oh = calloc(1, sz);
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|
|
nat64lsn_fill_ntlv(&oh->ntlv, name, set);
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|
|
if (do_get3(IP_FW_NAT64LSN_STATS, &oh->opheader, &sz) == 0) {
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|
|
oc = (ipfw_obj_ctlv *)(oh + 1);
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|
|
memcpy(stats, oc + 1, sizeof(*stats));
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|
|
free(oh);
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|
return (0);
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|
|
}
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|
|
free(oh);
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|
|
return (-1);
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|
|
}
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|
|
static void
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|
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nat64lsn_stats(const char *name, uint8_t set)
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|
|
{
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|
|
struct ipfw_nat64lsn_stats stats;
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|
|
if (nat64lsn_get_stats(name, set, &stats) != 0)
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|
|
err(EX_OSERR, "Error retrieving stats");
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|
|
2020-07-13 17:51:04 +00:00
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|
|
if (g_co.use_set != 0 || set != 0)
|
2016-08-14 13:17:55 +00:00
|
|
|
printf("set %u ", set);
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|
|
printf("nat64lsn %s\n", name);
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|
|
printf("\t%ju packets translated from IPv6 to IPv4\n",
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|
|
(uintmax_t)stats.opcnt64);
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|
|
printf("\t%ju packets translated from IPv4 to IPv6\n",
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|
|
(uintmax_t)stats.opcnt46);
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|
|
printf("\t%ju IPv6 fragments created\n",
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|
|
(uintmax_t)stats.ofrags);
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|
|
printf("\t%ju IPv4 fragments received\n",
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|
|
(uintmax_t)stats.ifrags);
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|
|
printf("\t%ju output packets dropped due to no bufs, etc.\n",
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|
|
(uintmax_t)stats.oerrors);
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|
|
printf("\t%ju output packets discarded due to no IPv4 route\n",
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|
|
(uintmax_t)stats.noroute4);
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|
|
printf("\t%ju output packets discarded due to no IPv6 route\n",
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|
|
(uintmax_t)stats.noroute6);
|
|
|
|
printf("\t%ju packets discarded due to unsupported protocol\n",
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|
|
|
(uintmax_t)stats.noproto);
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|
|
printf("\t%ju packets discarded due to memory allocation problems\n",
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|
|
|
(uintmax_t)stats.nomem);
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|
|
printf("\t%ju packets discarded due to some errors\n",
|
|
|
|
(uintmax_t)stats.dropped);
|
|
|
|
printf("\t%ju packets not matched with IPv4 prefix\n",
|
|
|
|
(uintmax_t)stats.nomatch4);
|
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|
|
|
|
|
|
printf("\t%ju mbufs queued for post processing\n",
|
|
|
|
(uintmax_t)stats.jreinjected);
|
|
|
|
printf("\t%ju times the job queue was processed\n",
|
|
|
|
(uintmax_t)stats.jcalls);
|
|
|
|
printf("\t%ju job requests queued\n",
|
|
|
|
(uintmax_t)stats.jrequests);
|
|
|
|
printf("\t%ju job requests queue limit reached\n",
|
|
|
|
(uintmax_t)stats.jmaxlen);
|
|
|
|
printf("\t%ju job requests failed due to memory allocation problems\n",
|
|
|
|
(uintmax_t)stats.jnomem);
|
|
|
|
|
|
|
|
printf("\t%ju hosts allocated\n", (uintmax_t)stats.hostcount);
|
|
|
|
printf("\t%ju hosts requested\n", (uintmax_t)stats.jhostsreq);
|
|
|
|
printf("\t%ju host requests failed\n", (uintmax_t)stats.jhostfails);
|
|
|
|
|
|
|
|
printf("\t%ju portgroups requested\n", (uintmax_t)stats.jportreq);
|
|
|
|
printf("\t%ju portgroups allocated\n", (uintmax_t)stats.spgcreated);
|
|
|
|
printf("\t%ju portgroups deleted\n", (uintmax_t)stats.spgdeleted);
|
|
|
|
printf("\t%ju portgroup requests failed\n",
|
|
|
|
(uintmax_t)stats.jportfails);
|
|
|
|
printf("\t%ju portgroups allocated for TCP\n",
|
|
|
|
(uintmax_t)stats.tcpchunks);
|
|
|
|
printf("\t%ju portgroups allocated for UDP\n",
|
|
|
|
(uintmax_t)stats.udpchunks);
|
|
|
|
printf("\t%ju portgroups allocated for ICMP\n",
|
|
|
|
(uintmax_t)stats.icmpchunks);
|
|
|
|
|
|
|
|
printf("\t%ju states created\n", (uintmax_t)stats.screated);
|
|
|
|
printf("\t%ju states deleted\n", (uintmax_t)stats.sdeleted);
|
2016-08-13 16:09:49 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
|
|
|
nat64lsn_show_cb(ipfw_nat64lsn_cfg *cfg, const char *name, uint8_t set)
|
|
|
|
{
|
|
|
|
char abuf[INET6_ADDRSTRLEN];
|
|
|
|
|
|
|
|
if (name != NULL && strcmp(cfg->name, name) != 0)
|
|
|
|
return (ESRCH);
|
|
|
|
|
2020-07-13 17:51:04 +00:00
|
|
|
if (g_co.use_set != 0 && cfg->set != set)
|
2016-08-13 16:09:49 +00:00
|
|
|
return (ESRCH);
|
|
|
|
|
2020-07-13 17:51:04 +00:00
|
|
|
if (g_co.use_set != 0 || cfg->set != 0)
|
2016-08-13 16:09:49 +00:00
|
|
|
printf("set %u ", cfg->set);
|
|
|
|
inet_ntop(AF_INET, &cfg->prefix4, abuf, sizeof(abuf));
|
2018-05-09 11:59:24 +00:00
|
|
|
printf("nat64lsn %s prefix4 %s/%u", cfg->name, abuf, cfg->plen4);
|
2016-08-13 16:09:49 +00:00
|
|
|
inet_ntop(AF_INET6, &cfg->prefix6, abuf, sizeof(abuf));
|
2018-05-09 11:59:24 +00:00
|
|
|
printf(" prefix6 %s/%u", abuf, cfg->plen6);
|
2020-07-13 17:51:04 +00:00
|
|
|
if (g_co.verbose || cfg->states_chunks > 1)
|
2019-03-19 10:57:03 +00:00
|
|
|
printf(" states_chunks %u", cfg->states_chunks);
|
2020-07-13 17:51:04 +00:00
|
|
|
if (g_co.verbose || cfg->nh_delete_delay != NAT64LSN_HOST_AGE)
|
2016-08-13 16:09:49 +00:00
|
|
|
printf(" host_del_age %u", cfg->nh_delete_delay);
|
2020-07-13 17:51:04 +00:00
|
|
|
if (g_co.verbose || cfg->pg_delete_delay != NAT64LSN_PG_AGE)
|
2019-03-19 11:16:42 +00:00
|
|
|
printf(" pg_del_age %u", cfg->pg_delete_delay);
|
2020-07-13 17:51:04 +00:00
|
|
|
if (g_co.verbose || cfg->st_syn_ttl != NAT64LSN_TCP_SYN_AGE)
|
2016-08-13 16:09:49 +00:00
|
|
|
printf(" tcp_syn_age %u", cfg->st_syn_ttl);
|
2020-07-13 17:51:04 +00:00
|
|
|
if (g_co.verbose || cfg->st_close_ttl != NAT64LSN_TCP_FIN_AGE)
|
2016-08-13 16:09:49 +00:00
|
|
|
printf(" tcp_close_age %u", cfg->st_close_ttl);
|
2020-07-13 17:51:04 +00:00
|
|
|
if (g_co.verbose || cfg->st_estab_ttl != NAT64LSN_TCP_EST_AGE)
|
2016-08-13 16:09:49 +00:00
|
|
|
printf(" tcp_est_age %u", cfg->st_estab_ttl);
|
2020-07-13 17:51:04 +00:00
|
|
|
if (g_co.verbose || cfg->st_udp_ttl != NAT64LSN_UDP_AGE)
|
2016-08-13 16:09:49 +00:00
|
|
|
printf(" udp_age %u", cfg->st_udp_ttl);
|
2020-07-13 17:51:04 +00:00
|
|
|
if (g_co.verbose || cfg->st_icmp_ttl != NAT64LSN_ICMP_AGE)
|
2016-08-13 16:09:49 +00:00
|
|
|
printf(" icmp_age %u", cfg->st_icmp_ttl);
|
2020-07-13 17:51:04 +00:00
|
|
|
if (g_co.verbose || cfg->jmaxlen != NAT64LSN_JMAXLEN)
|
2019-03-19 11:16:42 +00:00
|
|
|
printf(" jmaxlen %u", cfg->jmaxlen);
|
2016-08-13 16:09:49 +00:00
|
|
|
if (cfg->flags & NAT64_LOG)
|
|
|
|
printf(" log");
|
2019-03-18 10:39:14 +00:00
|
|
|
if (cfg->flags & NAT64_ALLOW_PRIVATE)
|
|
|
|
printf(" allow_private");
|
2016-08-13 16:09:49 +00:00
|
|
|
printf("\n");
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
static int
|
2020-07-13 17:51:04 +00:00
|
|
|
nat64lsn_destroy_cb(ipfw_nat64lsn_cfg *cfg, const char *name __unused,
|
|
|
|
uint8_t set)
|
2016-08-13 16:09:49 +00:00
|
|
|
{
|
|
|
|
|
2020-07-13 17:51:04 +00:00
|
|
|
if (g_co.use_set != 0 && cfg->set != set)
|
2016-08-13 16:09:49 +00:00
|
|
|
return (ESRCH);
|
|
|
|
|
|
|
|
nat64lsn_destroy(cfg->name, cfg->set);
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Compare nat64lsn instances names.
|
|
|
|
* Honor number comparison.
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nat64name_cmp(const void *a, const void *b)
|
|
|
|
{
|
2020-07-13 17:51:04 +00:00
|
|
|
const ipfw_nat64lsn_cfg *ca, *cb;
|
2016-08-13 16:09:49 +00:00
|
|
|
|
2020-07-13 17:51:04 +00:00
|
|
|
ca = (const ipfw_nat64lsn_cfg *)a;
|
|
|
|
cb = (const ipfw_nat64lsn_cfg *)b;
|
2016-08-13 16:09:49 +00:00
|
|
|
|
|
|
|
if (ca->set > cb->set)
|
|
|
|
return (1);
|
|
|
|
else if (ca->set < cb->set)
|
|
|
|
return (-1);
|
|
|
|
return (stringnum_cmp(ca->name, cb->name));
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Retrieves nat64lsn instance list from kernel,
|
|
|
|
* optionally sorts it and calls requested function for each instance.
|
|
|
|
*
|
|
|
|
* Request: [ ipfw_obj_lheader ]
|
|
|
|
* Reply: [ ipfw_obj_lheader ipfw_nat64lsn_cfg x N ]
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
nat64lsn_foreach(nat64lsn_cb_t *f, const char *name, uint8_t set, int sort)
|
|
|
|
{
|
|
|
|
ipfw_obj_lheader *olh;
|
|
|
|
ipfw_nat64lsn_cfg *cfg;
|
|
|
|
size_t sz;
|
2020-07-13 17:51:04 +00:00
|
|
|
uint32_t i;
|
2016-08-13 16:09:49 +00:00
|
|
|
|
|
|
|
/* Start with reasonable default */
|
|
|
|
sz = sizeof(*olh) + 16 * sizeof(ipfw_nat64lsn_cfg);
|
|
|
|
|
|
|
|
for (;;) {
|
|
|
|
if ((olh = calloc(1, sz)) == NULL)
|
|
|
|
return (ENOMEM);
|
|
|
|
|
|
|
|
olh->size = sz;
|
|
|
|
if (do_get3(IP_FW_NAT64LSN_LIST, &olh->opheader, &sz) != 0) {
|
|
|
|
sz = olh->size;
|
|
|
|
free(olh);
|
|
|
|
if (errno != ENOMEM)
|
|
|
|
return (errno);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (sort != 0)
|
|
|
|
qsort(olh + 1, olh->count, olh->objsize,
|
|
|
|
nat64name_cmp);
|
|
|
|
|
|
|
|
cfg = (ipfw_nat64lsn_cfg *)(olh + 1);
|
|
|
|
for (i = 0; i < olh->count; i++) {
|
2023-06-27 17:19:32 +00:00
|
|
|
(void)f(cfg, name, set); /* Ignore errors for now */
|
2016-08-13 16:09:49 +00:00
|
|
|
cfg = (ipfw_nat64lsn_cfg *)((caddr_t)cfg +
|
|
|
|
olh->objsize);
|
|
|
|
}
|
|
|
|
free(olh);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return (0);
|
|
|
|
}
|
|
|
|
|