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sbin/ipfw/nat64lsn.c
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/*- | |||||
* Copyright (c) 2015-2016 Yandex LLC | |||||
* Copyright (c) 2015-2016 Alexander V. Chernikov <melifaro@FreeBSD.org> | |||||
* Copyright (c) 2015-2016 Andrey V. Elsukov <ae@FreeBSD.org> | |||||
* All rights reserved. | |||||
* | |||||
* Redistribution and use in source and binary forms, with or without | |||||
* modification, are permitted provided that the following conditions | |||||
* are met: | |||||
* | |||||
* 1. Redistributions of source code must retain the above copyright | |||||
* notice, this list of conditions and the following disclaimer. | |||||
* 2. Redistributions in binary form must reproduce the above copyright | |||||
* notice, this list of conditions and the following disclaimer in the | |||||
* documentation and/or other materials provided with the distribution. | |||||
* | |||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR | |||||
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES | |||||
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. | |||||
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, | |||||
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |||||
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |||||
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |||||
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |||||
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF | |||||
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |||||
*/ | |||||
#include <sys/cdefs.h> | |||||
__FBSDID("$FreeBSD$"); | |||||
#include <sys/types.h> | |||||
#include <sys/socket.h> | |||||
#include "ipfw2.h" | |||||
#include <ctype.h> | |||||
#include <err.h> | |||||
#include <errno.h> | |||||
#include <netdb.h> | |||||
#include <stdio.h> | |||||
#include <stdlib.h> | |||||
#include <string.h> | |||||
#include <sysexits.h> | |||||
#include <net/if.h> | |||||
#include <netinet/in.h> | |||||
#include <netinet/ip_fw.h> | |||||
#include <netinet6/ip_fw_nat64.h> | |||||
#include <arpa/inet.h> | |||||
static void nat64lsn_fill_ntlv(ipfw_obj_ntlv *ntlv, const char *name, | |||||
uint8_t set); | |||||
typedef int (nat64lsn_cb_t)(ipfw_nat64lsn_cfg *cfg, const char *name, | |||||
uint8_t set); | |||||
static int nat64lsn_foreach(nat64lsn_cb_t *f, const char *name, uint8_t set, | |||||
int sort); | |||||
static void nat64lsn_create(const char *name, uint8_t set, int ac, char **av); | |||||
static void nat64lsn_destroy(const char *name, uint8_t set); | |||||
static void nat64lsn_stats(const char *name, uint8_t set); | |||||
static int nat64lsn_show_cb(ipfw_nat64lsn_cfg *cfg, const char *name, | |||||
uint8_t set); | |||||
static int nat64lsn_destroy_cb(ipfw_nat64lsn_cfg *cfg, const char *name, | |||||
uint8_t set); | |||||
static int nat64lsn_states_cb(ipfw_nat64lsn_cfg *cfg, const char *name, | |||||
uint8_t set); | |||||
static struct _s_x nat64cmds[] = { | |||||
{ "create", TOK_CREATE }, | |||||
{ "destroy", TOK_DESTROY }, | |||||
{ "list", TOK_LIST }, | |||||
{ "show", TOK_LIST }, | |||||
{ "stats", TOK_STATS }, | |||||
{ NULL, 0 } | |||||
}; | |||||
static uint64_t | |||||
nat64lsn_print_states(void *buf) | |||||
{ | |||||
char s[INET6_ADDRSTRLEN], a[INET_ADDRSTRLEN], f[INET_ADDRSTRLEN]; | |||||
char sflags[4], *sf, *proto; | |||||
ipfw_obj_header *oh; | |||||
ipfw_obj_data *od; | |||||
ipfw_nat64lsn_stg *stg; | |||||
ipfw_nat64lsn_state *ste; | |||||
uint64_t next_idx; | |||||
size_t sz; | |||||
int i; | |||||
oh = (ipfw_obj_header *)buf; | |||||
od = (ipfw_obj_data *)(oh + 1); | |||||
stg = (ipfw_nat64lsn_stg *)(od + 1); | |||||
sz = od->head.length - sizeof(*od); | |||||
while (sz > 0) { | |||||
next_idx = stg->next_idx; | |||||
if (next_idx == 0xFF) | |||||
break; | |||||
sz -= sizeof(*stg); | |||||
if (stg->count == 0) { | |||||
stg++; | |||||
continue; | |||||
} | |||||
switch (stg->proto) { | |||||
case IPPROTO_TCP: | |||||
proto = "TCP"; | |||||
break; | |||||
case IPPROTO_UDP: | |||||
proto = "UDP"; | |||||
break; | |||||
case IPPROTO_ICMPV6: | |||||
proto = "ICMPv6"; | |||||
break; | |||||
} | |||||
inet_ntop(AF_INET6, &stg->host6, s, sizeof(s)); | |||||
inet_ntop(AF_INET, &stg->alias4, a, sizeof(a)); | |||||
ste = (ipfw_nat64lsn_state *)(stg + 1); | |||||
for (i = 0; i < stg->count && sz > 0; i++) { | |||||
sf = sflags; | |||||
inet_ntop(AF_INET, &ste->daddr, f, sizeof(f)); | |||||
if (stg->proto == IPPROTO_TCP) { | |||||
if (ste->flags & 0x02) | |||||
*sf++ = 'S'; | |||||
if (ste->flags & 0x04) | |||||
*sf++ = 'E'; | |||||
if (ste->flags & 0x01) | |||||
*sf++ = 'F'; | |||||
} | |||||
*sf = '\0'; | |||||
switch (stg->proto) { | |||||
case IPPROTO_TCP: | |||||
case IPPROTO_UDP: | |||||
printf("%s:%d\t%s:%d\t%s\t%s\t%d\t%s:%d\n", | |||||
s, ste->sport, a, ste->aport, proto, | |||||
sflags, ste->idle, f, ste->dport); | |||||
break; | |||||
case IPPROTO_ICMPV6: | |||||
printf("%s\t%s\t%s\t\t%d\t%s\n", | |||||
s, a, proto, ste->idle, f); | |||||
break; | |||||
default: | |||||
printf("%s\t%s\t%d\t\t%d\t%s\n", | |||||
s, a, stg->proto, ste->idle, f); | |||||
} | |||||
ste++; | |||||
sz -= sizeof(*ste); | |||||
} | |||||
stg = (ipfw_nat64lsn_stg *)ste; | |||||
} | |||||
return (next_idx); | |||||
} | |||||
static int | |||||
nat64lsn_states_cb(ipfw_nat64lsn_cfg *cfg, const char *name, uint8_t set) | |||||
{ | |||||
ipfw_obj_header *oh; | |||||
ipfw_obj_data *od; | |||||
void *buf; | |||||
uint64_t next_idx; | |||||
size_t sz; | |||||
if (name != NULL && strcmp(cfg->name, name) != 0) | |||||
return (ESRCH); | |||||
if (set != 0 && cfg->set != set) | |||||
return (ESRCH); | |||||
next_idx = 0; | |||||
sz = 4096; | |||||
if ((buf = calloc(1, sz)) == NULL) | |||||
err(EX_OSERR, NULL); | |||||
do { | |||||
oh = (ipfw_obj_header *)buf; | |||||
od = (ipfw_obj_data *)(oh + 1); | |||||
nat64lsn_fill_ntlv(&oh->ntlv, cfg->name, set); | |||||
od->head.type = IPFW_TLV_OBJDATA; | |||||
od->head.length = sizeof(*od) + sizeof(next_idx); | |||||
*((uint64_t *)(od + 1)) = next_idx; | |||||
if (do_get3(IP_FW_NAT64LSN_LIST_STATES, &oh->opheader, &sz)) | |||||
err(EX_OSERR, "Error reading nat64lsn states"); | |||||
sz = 4096; | |||||
next_idx = nat64lsn_print_states(buf); | |||||
memset(buf, 0, sz); | |||||
} while (next_idx != 0xFF); | |||||
free(buf); | |||||
return (0); | |||||
} | |||||
static struct _s_x nat64listcmds[] = { | |||||
{ "states", TOK_STATES }, | |||||
{ "config", TOK_CONFIG }, | |||||
{ NULL, 0 } | |||||
}; | |||||
static void | |||||
ipfw_nat64lsn_list_handler(const char *name, uint8_t set, int ac, char *av[]) | |||||
{ | |||||
int tcmd; | |||||
if (ac == 0) { | |||||
nat64lsn_foreach(nat64lsn_show_cb, name, set, 1); | |||||
return; | |||||
} | |||||
NEED1("nat64lsn list needs command"); | |||||
tcmd = get_token(nat64listcmds, *av, "nat64lsn list command"); | |||||
switch (tcmd) { | |||||
case TOK_STATES: | |||||
nat64lsn_foreach(nat64lsn_states_cb, name, set, 1); | |||||
break; | |||||
case TOK_CONFIG: | |||||
nat64lsn_foreach(nat64lsn_show_cb, name, set, 1); | |||||
} | |||||
} | |||||
/* | |||||
* This one handles all nat64lsn-related commands | |||||
* ipfw [set N] nat64lsn NAME {create | config} ... | |||||
* ipfw [set N] nat64lsn NAME stats | |||||
* ipfw [set N] nat64lsn {NAME | all} destroy | |||||
* ipfw [set N] nat64lsn {NAME | all} {list | show} [config | states] | |||||
*/ | |||||
#define nat64lsn_check_name table_check_name | |||||
void | |||||
ipfw_nat64lsn_handler(int ac, char *av[]) | |||||
{ | |||||
const char *name; | |||||
int tcmd; | |||||
uint8_t set; | |||||
if (co.use_set != 0) | |||||
set = co.use_set - 1; | |||||
else | |||||
set = 0; | |||||
ac--; av++; | |||||
NEED1("nat64lsn needs instance name"); | |||||
name = *av; | |||||
if (nat64lsn_check_name(name) != 0) { | |||||
if (strcmp(name, "all") == 0) | |||||
name = NULL; | |||||
else | |||||
errx(EX_USAGE, "nat64lsn instance name %s is invalid", | |||||
name); | |||||
} | |||||
ac--; av++; | |||||
NEED1("nat64lsn needs command"); | |||||
tcmd = get_token(nat64cmds, *av, "nat64lsn command"); | |||||
if (name == NULL && tcmd != TOK_DESTROY && tcmd != TOK_LIST) | |||||
errx(EX_USAGE, "nat64lsn instance name required"); | |||||
switch (tcmd) { | |||||
case TOK_CREATE: | |||||
ac--; av++; | |||||
nat64lsn_create(name, set, ac, av); | |||||
break; | |||||
case TOK_LIST: | |||||
ac--; av++; | |||||
ipfw_nat64lsn_list_handler(name, set, ac, av); | |||||
break; | |||||
case TOK_DESTROY: | |||||
if (name == NULL) | |||||
nat64lsn_foreach(nat64lsn_destroy_cb, NULL, set, 0); | |||||
else | |||||
nat64lsn_destroy(name, set); | |||||
break; | |||||
case TOK_STATS: | |||||
nat64lsn_stats(name, set); | |||||
} | |||||
} | |||||
static void | |||||
nat64lsn_fill_ntlv(ipfw_obj_ntlv *ntlv, const char *name, uint8_t set) | |||||
{ | |||||
ntlv->head.type = IPFW_TLV_EACTION_NAME(1); /* it doesn't matter */ | |||||
ntlv->head.length = sizeof(ipfw_obj_ntlv); | |||||
ntlv->idx = 1; | |||||
ntlv->set = set; | |||||
strlcpy(ntlv->name, name, sizeof(ntlv->name)); | |||||
} | |||||
static void | |||||
nat64lsn_apply_mask(int af, void *prefix, uint16_t plen) | |||||
{ | |||||
struct in6_addr mask6, *p6; | |||||
struct in_addr mask4, *p4; | |||||
if (af == AF_INET) { | |||||
p4 = (struct in_addr *)prefix; | |||||
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[] = { | |||||
{ "prefix4", TOK_PREFIX4 }, | |||||
{ "prefix6", TOK_PREFIX6 }, | |||||
{ "agg_len", TOK_AGG_LEN }, | |||||
{ "agg_count", TOK_AGG_COUNT }, | |||||
{ "max_ports", TOK_MAX_PORTS }, | |||||
{ "jmaxlen", TOK_JMAXLEN }, | |||||
{ "port_range", TOK_PORT_RANGE }, | |||||
{ "nh_del_age", TOK_NH_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 }, | |||||
{ NULL, 0 } | |||||
}; | |||||
/* | |||||
* Creates new nat64lsn instance | |||||
* ipfw nat64lsn <NAME> create | |||||
* agg_len <LEN> | |||||
* [ 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 *p, *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; | |||||
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); | |||||
ac--; av++; | |||||
break; | |||||
case TOK_AGG_LEN: | |||||
NEED1("Aggregation prefix len required"); | |||||
cfg->agg_prefix_len = nat64lsn_parse_int(*av, opt); | |||||
ac--; av++; | |||||
break; | |||||
case TOK_AGG_COUNT: | |||||
NEED1("Max per-prefix count required"); | |||||
cfg->agg_prefix_max = 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_JMAXLEN: | |||||
NEED1("job queue length required"); | |||||
cfg->jmaxlen = nat64lsn_parse_int(*av, opt); | |||||
ac--; av++; | |||||
break; | |||||
case TOK_PORT_RANGE: | |||||
NEED1("port range x[:y] required"); | |||||
if ((p = strchr(*av, ':')) == NULL) | |||||
cfg->min_port = (uint16_t)nat64lsn_parse_int( | |||||
*av, opt); | |||||
else { | |||||
*p++ = '\0'; | |||||
cfg->min_port = (uint16_t)nat64lsn_parse_int( | |||||
*av, opt); | |||||
cfg->max_port = (uint16_t)nat64lsn_parse_int( | |||||
p, opt); | |||||
} | |||||
ac--; av++; | |||||
break; | |||||
case TOK_NH_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++; | |||||
} | |||||
} | |||||
/* 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"); | |||||
} | |||||
/* | |||||
* Destroys given table 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)); | |||||
nat64lsn_fill_ntlv(&oh.ntlv, name, set); | |||||
if (do_set3(IP_FW_NAT64LSN_DESTROY, &oh.opheader, sizeof(oh)) != 0) | |||||
err(EX_OSERR, "failed to destroy nat instance %s", name); | |||||
} | |||||
/* | |||||
* Get nat64lsn instance statistics. | |||||
* Request: [ ipfw_obj_header ] | |||||
* Reply: [ ipfw_obj_header ipfw_obj_ctlv [ uint64_t x N ] ] | |||||
*/ | |||||
static int | |||||
nat64lsn_get_stats(const char *name, uint8_t set, | |||||
struct ipfw_nat64lsn_stats *stats) | |||||
{ | |||||
ipfw_obj_header *oh; | |||||
ipfw_obj_ctlv *oc; | |||||
size_t sz; | |||||
sz = sizeof(*oh) + sizeof(*oc) + sizeof(*stats); | |||||
oh = calloc(1, sz); | |||||
nat64lsn_fill_ntlv(&oh->ntlv, name, set); | |||||
if (do_get3(IP_FW_NAT64LSN_STATS, &oh->opheader, &sz) == 0) { | |||||
oc = (ipfw_obj_ctlv *)(oh + 1); | |||||
memcpy(stats, oc + 1, sizeof(*stats)); | |||||
free(oh); | |||||
return (0); | |||||
} | |||||
free(oh); | |||||
return (-1); | |||||
} | |||||
#define _P_STAT(_s, _f) printf("%8s:\t%lu\n", #_f, _s._f) | |||||
static void | |||||
nat64lsn_stats(const char *name, uint8_t set) | |||||
{ | |||||
struct ipfw_nat64lsn_stats stats; | |||||
if (nat64lsn_get_stats(name, set, &stats) != 0) | |||||
err(EX_OSERR, "Error retrieving stats"); | |||||
_P_STAT(stats, opcnt64); | |||||
_P_STAT(stats, opcnt46); | |||||
_P_STAT(stats, ofrags); | |||||
_P_STAT(stats, ifrags); | |||||
_P_STAT(stats, oerrors); | |||||
_P_STAT(stats, noroute4); | |||||
_P_STAT(stats, noroute6); | |||||
_P_STAT(stats, noproto); | |||||
_P_STAT(stats, nomem); | |||||
_P_STAT(stats, dropped); | |||||
_P_STAT(stats, hostcount); | |||||
_P_STAT(stats, tcpchunks); | |||||
_P_STAT(stats, udpchunks); | |||||
_P_STAT(stats, icmpchunks); | |||||
_P_STAT(stats, jcalls); | |||||
_P_STAT(stats, jrequests); | |||||
_P_STAT(stats, jhostsreq); | |||||
_P_STAT(stats, jportreq); | |||||
_P_STAT(stats, jhostfails); | |||||
_P_STAT(stats, jportfails); | |||||
_P_STAT(stats, jreinjected); | |||||
_P_STAT(stats, jmaxlen); | |||||
_P_STAT(stats, jnomem); | |||||
_P_STAT(stats, screated); | |||||
_P_STAT(stats, sdeleted); | |||||
_P_STAT(stats, spgcreated); | |||||
_P_STAT(stats, spgdeleted); | |||||
} | |||||
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); | |||||
if (co.use_set != 0 && cfg->set != set) | |||||
return (ESRCH); | |||||
if (co.use_set != 0 || cfg->set != 0) | |||||
printf("set %u ", cfg->set); | |||||
inet_ntop(AF_INET, &cfg->prefix4, abuf, sizeof(abuf)); | |||||
printf("nat64lsn %s prefix4 %s/%u ", cfg->name, abuf, cfg->plen4); | |||||
inet_ntop(AF_INET6, &cfg->prefix6, abuf, sizeof(abuf)); | |||||
printf("prefix6 %s/%u", abuf, cfg->plen6); | |||||
printf("agg_len %u agg_count %u ", cfg->agg_prefix_len, | |||||
cfg->agg_prefix_max); | |||||
printf("max_ports %u jmaxlen %u ", cfg->max_ports, cfg->jmaxlen); | |||||
printf("port_range %u:%u ", cfg->min_port, cfg->max_port); | |||||
printf("nh_del_age %u pg_del_age %u ", cfg->nh_delete_delay, | |||||
cfg->pg_delete_delay); | |||||
printf("tcp_syn_age %u tcp_close_age %u ", cfg->st_syn_ttl, | |||||
cfg->st_close_ttl); | |||||
printf("tcp_est_age %u udp_age %u icmp_age %u\n", cfg->st_estab_ttl, | |||||
cfg->st_udp_ttl, cfg->st_icmp_ttl); | |||||
return (0); | |||||
} | |||||
static int | |||||
nat64lsn_destroy_cb(ipfw_nat64lsn_cfg *cfg, const char *name, uint8_t set) | |||||
{ | |||||
if (co.use_set != 0 && cfg->set != set) | |||||
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) | |||||
{ | |||||
ipfw_nat64lsn_cfg *ca, *cb; | |||||
ca = (ipfw_nat64lsn_cfg *)a; | |||||
cb = (ipfw_nat64lsn_cfg *)b; | |||||
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; | |||||
int i, error; | |||||
/* 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++) { | |||||
error = f(cfg, name, set); /* Ignore errors for now */ | |||||
cfg = (ipfw_nat64lsn_cfg *)((caddr_t)cfg + | |||||
olh->objsize); | |||||
} | |||||
free(olh); | |||||
break; | |||||
} | |||||
return (0); | |||||
} | |||||