/* $USAGI: $ */
/*
* Copyright (C)2004 USAGI/WIDE Project
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 <http://www.gnu.org/licenses>.
*/
/*
* based on ip.c, iproute.c
*/
/*
* Authors:
* Masahide NAKAMURA @USAGI
*/
#include <alloca.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <time.h>
#include <netdb.h>
#include <linux/netlink.h>
#include <linux/rtnetlink.h>
#include <linux/udp.h>
#include "utils.h"
#include "xfrm.h"
#include "ip_common.h"
#define STRBUF_SIZE (128)
struct xfrm_filter filter;
static void usage(void) __attribute__((noreturn));
static void usage(void)
{
fprintf(stderr,
"Usage: ip xfrm XFRM-OBJECT { COMMAND | help }\n"
"where XFRM-OBJECT := state | policy | monitor\n");
exit(-1);
}
/* This is based on utils.c(inet_addr_match) */
int xfrm_addr_match(xfrm_address_t *x1, xfrm_address_t *x2, int bits)
{
__u32 *a1 = (__u32 *)x1;
__u32 *a2 = (__u32 *)x2;
int words = bits >> 0x05;
bits &= 0x1f;
if (words)
if (memcmp(a1, a2, words << 2))
return -1;
if (bits) {
__u32 w1, w2;
__u32 mask;
w1 = a1[words];
w2 = a2[words];
mask = htonl((0xffffffff) << (0x20 - bits));
if ((w1 ^ w2) & mask)
return 1;
}
return 0;
}
int xfrm_xfrmproto_is_ipsec(__u8 proto)
{
return (proto == IPPROTO_ESP ||
proto == IPPROTO_AH ||
proto == IPPROTO_COMP);
}
int xfrm_xfrmproto_is_ro(__u8 proto)
{
return (proto == IPPROTO_ROUTING ||
proto == IPPROTO_DSTOPTS);
}
struct typeent {
const char *t_name;
int t_type;
};
static const struct typeent xfrmproto_types[] = {
{ "esp", IPPROTO_ESP }, { "ah", IPPROTO_AH }, { "comp", IPPROTO_COMP },
{ "route2", IPPROTO_ROUTING }, { "hao", IPPROTO_DSTOPTS },
{ "ipsec-any", IPSEC_PROTO_ANY },
{ NULL, -1 }
};
int xfrm_xfrmproto_getbyname(char *name)
{
int i;
for (i = 0; ; i++) {
const struct typeent *t = &xfrmproto_types[i];
if (!t->t_name || t->t_type == -1)
break;
if (strcmp(t->t_name, name) == 0)
return t->t_type;
}
return -1;
}
const char *strxf_xfrmproto(__u8 proto)
{
static char str[16];
int i;
for (i = 0; ; i++) {
const struct typeent *t = &xfrmproto_types[i];
if (!t->t_name || t->t_type == -1)
break;
if (t->t_type == proto)
return t->t_name;
}
sprintf(str, "%u", proto);
return str;
}
static const struct typeent algo_types[] = {
{ "enc", XFRMA_ALG_CRYPT }, { "auth", XFRMA_ALG_AUTH },
{ "comp", XFRMA_ALG_COMP }, { "aead", XFRMA_ALG_AEAD },
{ "auth-trunc", XFRMA_ALG_AUTH_TRUNC },
{ NULL, -1 }
};
int xfrm_algotype_getbyname(char *name)
{
int i;
for (i = 0; ; i++) {
const struct typeent *t = &algo_types[i];
if (!t->t_name || t->t_type == -1)
break;
if (strcmp(t->t_name, name) == 0)
return t->t_type;
}
return -1;
}
const char *strxf_algotype(int type)
{
static char str[32];
int i;
for (i = 0; ; i++) {
const struct typeent *t = &algo_types[i];
if (!t->t_name || t->t_type == -1)
break;
if (t->t_type == type)
return t->t_name;
}
sprintf(str, "%d", type);
return str;
}
static const char *strxf_mask8(__u8 mask)
{
static char str[16];
const int sn = sizeof(mask) * 8 - 1;
__u8 b;
int i = 0;
for (b = (1 << sn); b > 0; b >>= 1)
str[i++] = ((b & mask) ? '1' : '0');
str[i] = '\0';
return str;
}
const char *strxf_mask32(__u32 mask)
{
static char str[16];
sprintf(str, "%.8x", mask);
return str;
}
static const char *strxf_share(__u8 share)
{
static char str[32];
switch (share) {
case XFRM_SHARE_ANY:
strcpy(str, "any");
break;
case XFRM_SHARE_SESSION:
strcpy(str, "session");
break;
case XFRM_SHARE_USER:
strcpy(str, "user");
break;
case XFRM_SHARE_UNIQUE:
strcpy(str, "unique");
break;
default:
sprintf(str, "%u", share);
break;
}
return str;
}
const char *strxf_proto(__u8 proto)
{
static char buf[32];
struct protoent *pp;
const char *p;
pp = getprotobynumber(proto);
if (pp)
p = pp->p_name;
else {
sprintf(buf, "%u", proto);
p = buf;
}
return p;
}
const char *strxf_ptype(__u8 ptype)
{
static char str[16];
switch (ptype) {
case XFRM_POLICY_TYPE_MAIN:
strcpy(str, "main");
break;
case XFRM_POLICY_TYPE_SUB:
strcpy(str, "sub");
break;
default:
sprintf(str, "%u", ptype);
break;
}
return str;
}
static void xfrm_id_info_print(xfrm_address_t *saddr, struct xfrm_id *id,
__u8 mode, __u32 reqid, __u16 family, int force_spi,
FILE *fp, const char *prefix, const char *title)
{
if (title)
fputs(title, fp);
fprintf(fp, "src %s ", rt_addr_n2a(family, sizeof(*saddr), saddr));
fprintf(fp, "dst %s", rt_addr_n2a(family, sizeof(id->daddr), &id->daddr));
fprintf(fp, "%s", _SL_);
if (prefix)
fputs(prefix, fp);
fprintf(fp, "\t");
fprintf(fp, "proto %s ", strxf_xfrmproto(id->proto));
if (show_stats > 0 || force_spi || id->spi) {
__u32 spi = ntohl(id->spi);
fprintf(fp, "spi 0x%08x", spi);
if (show_stats > 0)
fprintf(fp, "(%u)", spi);
fprintf(fp, " ");
}
fprintf(fp, "reqid %u", reqid);
if (show_stats > 0)
fprintf(fp, "(0x%08x)", reqid);
fprintf(fp, " ");
fprintf(fp, "mode ");
switch (mode) {
case XFRM_MODE_TRANSPORT:
fprintf(fp, "transport");
break;
case XFRM_MODE_TUNNEL:
fprintf(fp, "tunnel");
break;
case XFRM_MODE_ROUTEOPTIMIZATION:
fprintf(fp, "ro");
break;
case XFRM_MODE_IN_TRIGGER:
fprintf(fp, "in_trigger");
break;
case XFRM_MODE_BEET:
fprintf(fp, "beet");
break;
default:
fprintf(fp, "%u", mode);
break;
}
fprintf(fp, "%s", _SL_);
}
static const char *strxf_limit(__u64 limit)
{
static char str[32];
if (limit == XFRM_INF)
strcpy(str, "(INF)");
else
sprintf(str, "%llu", (unsigned long long) limit);
return str;
}
static void xfrm_stats_print(struct xfrm_stats *s, FILE *fp,
const char *prefix)
{
if (prefix)
fputs(prefix, fp);
fprintf(fp, "stats:%s", _SL_);
if (prefix)
fputs(prefix, fp);
fprintf(fp, " replay-window %u replay %u failed %u%s",
s->replay_window, s->replay, s->integrity_failed, _SL_);
}
static const char *strxf_time(__u64 time)
{
static char str[32];
if (time == 0)
strcpy(str, "-");
else {
time_t t;
struct tm *tp;
/* XXX: treat time in the same manner of kernel's
* net/xfrm/xfrm_{user,state}.c
*/
t = (long)time;
tp = localtime(&t);
strftime(str, sizeof(str), "%Y-%m-%d %T", tp);
}
return str;
}
static void xfrm_lifetime_print(struct xfrm_lifetime_cfg *cfg,
struct xfrm_lifetime_cur *cur,
FILE *fp, const char *prefix)
{
if (cfg) {
if (prefix)
fputs(prefix, fp);
fprintf(fp, "lifetime config:%s", _SL_);
if (prefix)
fputs(prefix, fp);
fprintf(fp, " limit: soft %s(bytes),",
strxf_limit(cfg->soft_byte_limit));
fprintf(fp, " hard %s(bytes)%s",
strxf_limit(cfg->hard_byte_limit), _SL_);
if (prefix)
fputs(prefix, fp);
fprintf(fp, " limit: soft %s(packets),",
strxf_limit(cfg->soft_packet_limit));
fprintf(fp, " hard %s(packets)%s",
strxf_limit(cfg->hard_packet_limit), _SL_);
if (prefix)
fputs(prefix, fp);
fprintf(fp, " expire add: soft %llu(sec), hard %llu(sec)%s",
(unsigned long long) cfg->soft_add_expires_seconds,
(unsigned long long) cfg->hard_add_expires_seconds,
_SL_);
if (prefix)
fputs(prefix, fp);
fprintf(fp, " expire use: soft %llu(sec), hard %llu(sec)%s",
(unsigned long long) cfg->soft_use_expires_seconds,
(unsigned long long) cfg->hard_use_expires_seconds,
_SL_);
}
if (cur) {
if (prefix)
fputs(prefix, fp);
fprintf(fp, "lifetime current:%s", _SL_);
if (prefix)
fputs(prefix, fp);
fprintf(fp, " %llu(bytes), %llu(packets)%s",
(unsigned long long) cur->bytes,
(unsigned long long) cur->packets,
_SL_);
if (prefix)
fputs(prefix, fp);
fprintf(fp, " add %s ", strxf_time(cur->add_time));
fprintf(fp, "use %s%s", strxf_time(cur->use_time), _SL_);
}
}
void xfrm_selector_print(struct xfrm_selector *sel, __u16 family,
FILE *fp, const char *prefix)
{
__u16 f;
f = sel->family;
if (f == AF_UNSPEC)
f = family;
if (f == AF_UNSPEC)
f = preferred_family;
if (prefix)
fputs(prefix, fp);
fprintf(fp, "src %s/%u ",
rt_addr_n2a(f, sizeof(sel->saddr), &sel->saddr),
sel->prefixlen_s);
fprintf(fp, "dst %s/%u ",
rt_addr_n2a(f, sizeof(sel->daddr), &sel->daddr),
sel->prefixlen_d);
if (sel->proto)
fprintf(fp, "proto %s ", strxf_proto(sel->proto));
switch (sel->proto) {
case IPPROTO_TCP:
case IPPROTO_UDP:
case IPPROTO_SCTP:
case IPPROTO_DCCP:
default: /* XXX */
if (sel->sport_mask)
fprintf(fp, "sport %u ", ntohs(sel->sport));
if (sel->dport_mask)
fprintf(fp, "dport %u ", ntohs(sel->dport));
break;
case IPPROTO_ICMP:
case IPPROTO_ICMPV6:
/* type/code is stored at sport/dport in selector */
if (sel->sport_mask)
fprintf(fp, "type %u ", ntohs(sel->sport));
if (sel->dport_mask)
fprintf(fp, "code %u ", ntohs(sel->dport));
break;
case IPPROTO_GRE:
if (sel->sport_mask || sel->dport_mask)
fprintf(fp, "key %u ",
(((__u32)ntohs(sel->sport)) << 16) +
ntohs(sel->dport));
break;
case IPPROTO_MH:
if (sel->sport_mask)
fprintf(fp, "type %u ", ntohs(sel->sport));
if (sel->dport_mask) {
if (show_stats > 0)
fprintf(fp, "(dport) 0x%.4x ", sel->dport);
}
break;
}
if (sel->ifindex > 0)
fprintf(fp, "dev %s ", ll_index_to_name(sel->ifindex));
if (show_stats > 0)
fprintf(fp, "uid %u", sel->user);
fprintf(fp, "%s", _SL_);
}
static void __xfrm_algo_print(struct xfrm_algo *algo, int type, int len,
FILE *fp, const char *prefix, int newline,
bool nokeys)
{
int keylen;
int i;
if (prefix)
fputs(prefix, fp);
fprintf(fp, "%s ", strxf_algotype(type));
if (len < sizeof(*algo)) {
fprintf(fp, "(ERROR truncated)");
goto fin;
}
len -= sizeof(*algo);
fprintf(fp, "%s ", algo->alg_name);
keylen = algo->alg_key_len / 8;
if (len < keylen) {
fprintf(fp, "(ERROR truncated)");
goto fin;
}
if (nokeys)
fprintf(fp, "<<Keys hidden>>");
else if (keylen > 0) {
fprintf(fp, "0x");
for (i = 0; i < keylen; i++)
fprintf(fp, "%.2x", (unsigned char)algo->alg_key[i]);
if (show_stats > 0)
fprintf(fp, " (%d bits)", algo->alg_key_len);
}
fin:
if (newline)
fprintf(fp, "%s", _SL_);
}
static inline void xfrm_algo_print(struct xfrm_algo *algo, int type, int len,
FILE *fp, const char *prefix, bool nokeys)
{
return __xfrm_algo_print(algo, type, len, fp, prefix, 1, nokeys);
}
static void xfrm_aead_print(struct xfrm_algo_aead *algo, int len,
FILE *fp, const char *prefix, bool nokeys)
{
struct xfrm_algo *base_algo = alloca(sizeof(*base_algo) + algo->alg_key_len / 8);
memcpy(base_algo->alg_name, algo->alg_name, sizeof(base_algo->alg_name));
base_algo->alg_key_len = algo->alg_key_len;
memcpy(base_algo->alg_key, algo->alg_key, algo->alg_key_len / 8);
__xfrm_algo_print(base_algo, XFRMA_ALG_AEAD, len, fp, prefix, 0,
nokeys);
fprintf(fp, " %d", algo->alg_icv_len);
fprintf(fp, "%s", _SL_);
}
static void xfrm_auth_trunc_print(struct xfrm_algo_auth *algo, int len,
FILE *fp, const char *prefix, bool nokeys)
{
struct xfrm_algo *base_algo = alloca(sizeof(*base_algo) + algo->alg_key_len / 8);
memcpy(base_algo->alg_name, algo->alg_name, sizeof(base_algo->alg_name));
base_algo->alg_key_len = algo->alg_key_len;
memcpy(base_algo->alg_key, algo->alg_key, algo->alg_key_len / 8);
__xfrm_algo_print(base_algo, XFRMA_ALG_AUTH_TRUNC, len, fp, prefix, 0,
nokeys);
fprintf(fp, " %d", algo->alg_trunc_len);
fprintf(fp, "%s", _SL_);
}
static void xfrm_tmpl_print(struct xfrm_user_tmpl *tmpls, int len,
FILE *fp, const char *prefix)
{
int ntmpls = len / sizeof(struct xfrm_user_tmpl);
int i;
if (ntmpls <= 0) {
if (prefix)
fputs(prefix, fp);
fprintf(fp, "(ERROR \"tmpl\" truncated)");
fprintf(fp, "%s", _SL_);
return;
}
for (i = 0; i < ntmpls; i++) {
struct xfrm_user_tmpl *tmpl = &tmpls[i];
if (prefix)
fputs(prefix, fp);
xfrm_id_info_print(&tmpl->saddr, &tmpl->id, tmpl->mode,
tmpl->reqid, tmpl->family, 0, fp, prefix, "tmpl ");
if (show_stats > 0 || tmpl->optional) {
if (prefix)
fputs(prefix, fp);
fprintf(fp, "\t");
switch (tmpl->optional) {
case 0:
if (show_stats > 0)
fprintf(fp, "level required ");
break;
case 1:
fprintf(fp, "level use ");
break;
default:
fprintf(fp, "level %u ", tmpl->optional);
break;
}
if (show_stats > 0)
fprintf(fp, "share %s ", strxf_share(tmpl->share));
fprintf(fp, "%s", _SL_);
}
if (show_stats > 0) {
if (prefix)
fputs(prefix, fp);
fprintf(fp, "\t");
fprintf(fp, "%s-mask %s ",
strxf_algotype(XFRMA_ALG_CRYPT),
strxf_mask32(tmpl->ealgos));
fprintf(fp, "%s-mask %s ",
strxf_algotype(XFRMA_ALG_AUTH),
strxf_mask32(tmpl->aalgos));
fprintf(fp, "%s-mask %s",
strxf_algotype(XFRMA_ALG_COMP),
strxf_mask32(tmpl->calgos));
fprintf(fp, "%s", _SL_);
}
}
}
static void xfrm_output_mark_print(struct rtattr *tb[], FILE *fp)
{
__u32 output_mark = rta_getattr_u32(tb[XFRMA_OUTPUT_MARK]);
fprintf(fp, "output-mark 0x%x", output_mark);
}
int xfrm_parse_mark(struct xfrm_mark *mark, int *argcp, char ***argvp)
{
int argc = *argcp;
char **argv = *argvp;
NEXT_ARG();
if (get_u32(&mark->v, *argv, 0)) {
invarg("MARK value is invalid\n", *argv);
}
if (argc > 1)
NEXT_ARG();
else { /* last entry on parse line */
mark->m = 0xffffffff;
goto done;
}
if (strcmp(*argv, "mask") == 0) {
NEXT_ARG();
if (get_u32(&mark->m, *argv, 0)) {
invarg("MASK value is invalid\n", *argv);
}
} else {
mark->m = 0xffffffff;
PREV_ARG();
}
done:
*argcp = argc;
*argvp = argv;
return 0;
}
void xfrm_xfrma_print(struct rtattr *tb[], __u16 family,
FILE *fp, const char *prefix, bool nokeys)
{
if (tb[XFRMA_MARK]) {
struct rtattr *rta = tb[XFRMA_MARK];
struct xfrm_mark *m = RTA_DATA(rta);
fprintf(fp, "\tmark %#x/%#x ", m->v, m->m);
if (tb[XFRMA_OUTPUT_MARK])
xfrm_output_mark_print(tb, fp);
fprintf(fp, "%s", _SL_);
} else if (tb[XFRMA_OUTPUT_MARK]) {
fprintf(fp, "\t");
xfrm_output_mark_print(tb, fp);
fprintf(fp, "%s", _SL_);
}
if (tb[XFRMA_ALG_AUTH] && !tb[XFRMA_ALG_AUTH_TRUNC]) {
struct rtattr *rta = tb[XFRMA_ALG_AUTH];
xfrm_algo_print(RTA_DATA(rta), XFRMA_ALG_AUTH, RTA_PAYLOAD(rta),
fp, prefix, nokeys);
}
if (tb[XFRMA_ALG_AUTH_TRUNC]) {
struct rtattr *rta = tb[XFRMA_ALG_AUTH_TRUNC];
xfrm_auth_trunc_print(RTA_DATA(rta), RTA_PAYLOAD(rta), fp,
prefix, nokeys);
}
if (tb[XFRMA_ALG_AEAD]) {
struct rtattr *rta = tb[XFRMA_ALG_AEAD];
xfrm_aead_print(RTA_DATA(rta), RTA_PAYLOAD(rta), fp, prefix,
nokeys);
}
if (tb[XFRMA_ALG_CRYPT]) {
struct rtattr *rta = tb[XFRMA_ALG_CRYPT];
xfrm_algo_print(RTA_DATA(rta), XFRMA_ALG_CRYPT,
RTA_PAYLOAD(rta), fp, prefix, nokeys);
}
if (tb[XFRMA_ALG_COMP]) {
struct rtattr *rta = tb[XFRMA_ALG_COMP];
xfrm_algo_print(RTA_DATA(rta), XFRMA_ALG_COMP, RTA_PAYLOAD(rta),
fp, prefix, nokeys);
}
if (tb[XFRMA_ENCAP]) {
struct xfrm_encap_tmpl *e;
if (prefix)
fputs(prefix, fp);
fprintf(fp, "encap ");
if (RTA_PAYLOAD(tb[XFRMA_ENCAP]) < sizeof(*e)) {
fprintf(fp, "(ERROR truncated)");
fprintf(fp, "%s", _SL_);
return;
}
e = RTA_DATA(tb[XFRMA_ENCAP]);
fprintf(fp, "type ");
switch (e->encap_type) {
case UDP_ENCAP_ESPINUDP_NON_IKE:
fprintf(fp, "espinudp-nonike ");
break;
case UDP_ENCAP_ESPINUDP:
fprintf(fp, "espinudp ");
break;
case TCP_ENCAP_ESPINTCP:
fprintf(fp, "espintcp ");
break;
default:
fprintf(fp, "%u ", e->encap_type);
break;
}
fprintf(fp, "sport %u ", ntohs(e->encap_sport));
fprintf(fp, "dport %u ", ntohs(e->encap_dport));
fprintf(fp, "addr %s",
rt_addr_n2a(family, sizeof(e->encap_oa), &e->encap_oa));
fprintf(fp, "%s", _SL_);
}
if (tb[XFRMA_TMPL]) {
struct rtattr *rta = tb[XFRMA_TMPL];
xfrm_tmpl_print(RTA_DATA(rta),
RTA_PAYLOAD(rta), fp, prefix);
}
if (tb[XFRMA_COADDR]) {
const xfrm_address_t *coa;
if (prefix)
fputs(prefix, fp);
fprintf(fp, "coa ");
coa = RTA_DATA(tb[XFRMA_COADDR]);
if (RTA_PAYLOAD(tb[XFRMA_COADDR]) < sizeof(*coa)) {
fprintf(fp, "(ERROR truncated)");
fprintf(fp, "%s", _SL_);
return;
}
fprintf(fp, "%s",
rt_addr_n2a(family, sizeof(*coa), coa));
fprintf(fp, "%s", _SL_);
}
if (tb[XFRMA_LASTUSED]) {
__u64 lastused;
if (prefix)
fputs(prefix, fp);
fprintf(fp, "lastused ");
if (RTA_PAYLOAD(tb[XFRMA_LASTUSED]) < sizeof(lastused)) {
fprintf(fp, "(ERROR truncated)");
fprintf(fp, "%s", _SL_);
return;
}
lastused = rta_getattr_u64(tb[XFRMA_LASTUSED]);
fprintf(fp, "%s", strxf_time(lastused));
fprintf(fp, "%s", _SL_);
}
if (tb[XFRMA_REPLAY_VAL]) {
struct xfrm_replay_state *replay;
if (prefix)
fputs(prefix, fp);
fprintf(fp, "anti-replay context: ");
if (RTA_PAYLOAD(tb[XFRMA_REPLAY_VAL]) < sizeof(*replay)) {
fprintf(fp, "(ERROR truncated)");
fprintf(fp, "%s", _SL_);
return;
}
replay = RTA_DATA(tb[XFRMA_REPLAY_VAL]);
fprintf(fp, "seq 0x%x, oseq 0x%x, bitmap 0x%08x",
replay->seq, replay->oseq, replay->bitmap);
fprintf(fp, "%s", _SL_);
}
if (tb[XFRMA_REPLAY_ESN_VAL]) {
struct xfrm_replay_state_esn *replay;
unsigned int i, j;
if (prefix)
fputs(prefix, fp);
fprintf(fp, "anti-replay esn context:");
if (RTA_PAYLOAD(tb[XFRMA_REPLAY_ESN_VAL]) < sizeof(*replay)) {
fprintf(fp, "(ERROR truncated)");
fprintf(fp, "%s", _SL_);
return;
}
fprintf(fp, "%s", _SL_);
replay = RTA_DATA(tb[XFRMA_REPLAY_ESN_VAL]);
if (prefix)
fputs(prefix, fp);
fprintf(fp, " seq-hi 0x%x, seq 0x%x, oseq-hi 0x%0x, oseq 0x%0x",
replay->seq_hi, replay->seq, replay->oseq_hi,
replay->oseq);
fprintf(fp, "%s", _SL_);
if (prefix)
fputs(prefix, fp);
fprintf(fp, " replay_window %u, bitmap-length %u",
replay->replay_window, replay->bmp_len);
for (i = replay->bmp_len, j = 0; i; i--) {
if (j++ % 8 == 0) {
fprintf(fp, "%s", _SL_);
if (prefix)
fputs(prefix, fp);
fprintf(fp, " ");
}
fprintf(fp, "%08x ", replay->bmp[i - 1]);
}
fprintf(fp, "%s", _SL_);
}
if (tb[XFRMA_OFFLOAD_DEV]) {
struct xfrm_user_offload *xuo;
if (prefix)
fputs(prefix, fp);
fprintf(fp, "crypto offload parameters: ");
if (RTA_PAYLOAD(tb[XFRMA_OFFLOAD_DEV]) < sizeof(*xuo)) {
fprintf(fp, "(ERROR truncated)");
fprintf(fp, "%s", _SL_);
return;
}
xuo = (struct xfrm_user_offload *)
RTA_DATA(tb[XFRMA_OFFLOAD_DEV]);
fprintf(fp, "dev %s dir %s", ll_index_to_name(xuo->ifindex),
(xuo->flags & XFRM_OFFLOAD_INBOUND) ? "in" : "out");
fprintf(fp, "%s", _SL_);
}
if (tb[XFRMA_IF_ID]) {
__u32 if_id = rta_getattr_u32(tb[XFRMA_IF_ID]);
if (prefix)
fputs(prefix, fp);
fprintf(fp, "if_id %#x", if_id);
fprintf(fp, "%s", _SL_);
}
}
static int xfrm_selector_iszero(struct xfrm_selector *s)
{
struct xfrm_selector s0 = {};
return (memcmp(&s0, s, sizeof(s0)) == 0);
}
void xfrm_state_info_print(struct xfrm_usersa_info *xsinfo,
struct rtattr *tb[], FILE *fp, const char *prefix,
const char *title, bool nokeys)
{
char buf[STRBUF_SIZE] = {};
int force_spi = xfrm_xfrmproto_is_ipsec(xsinfo->id.proto);
xfrm_id_info_print(&xsinfo->saddr, &xsinfo->id, xsinfo->mode,
xsinfo->reqid, xsinfo->family, force_spi, fp,
prefix, title);
if (prefix)
strlcat(buf, prefix, sizeof(buf));
strlcat(buf, "\t", sizeof(buf));
fputs(buf, fp);
fprintf(fp, "replay-window %u ", xsinfo->replay_window);
if (show_stats > 0)
fprintf(fp, "seq 0x%08u ", xsinfo->seq);
if (show_stats > 0 || xsinfo->flags) {
__u8 flags = xsinfo->flags;
fprintf(fp, "flag ");
XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_NOECN, "noecn");
XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_DECAP_DSCP, "decap-dscp");
XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_NOPMTUDISC, "nopmtudisc");
XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_WILDRECV, "wildrecv");
XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_ICMP, "icmp");
XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_AF_UNSPEC, "af-unspec");
XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_ALIGN4, "align4");
XFRM_FLAG_PRINT(fp, flags, XFRM_STATE_ESN, "esn");
if (flags)
fprintf(fp, "%x", flags);
}
if (show_stats > 0 && tb[XFRMA_SA_EXTRA_FLAGS]) {
__u32 extra_flags = rta_getattr_u32(tb[XFRMA_SA_EXTRA_FLAGS]);
fprintf(fp, "extra_flag ");
XFRM_FLAG_PRINT(fp, extra_flags,
XFRM_SA_XFLAG_DONT_ENCAP_DSCP,
"dont-encap-dscp");
XFRM_FLAG_PRINT(fp, extra_flags,
XFRM_SA_XFLAG_OSEQ_MAY_WRAP,
"oseq-may-wrap");
if (extra_flags)
fprintf(fp, "%x", extra_flags);
}
if (show_stats > 0)
fprintf(fp, " (0x%s)", strxf_mask8(xsinfo->flags));
fprintf(fp, "%s", _SL_);
xfrm_xfrma_print(tb, xsinfo->family, fp, buf, nokeys);
if (!xfrm_selector_iszero(&xsinfo->sel)) {
char sbuf[STRBUF_SIZE];
memcpy(sbuf, buf, sizeof(sbuf));
strlcat(sbuf, "sel ", sizeof(sbuf));
xfrm_selector_print(&xsinfo->sel, xsinfo->family, fp, sbuf);
}
if (show_stats > 0) {
xfrm_lifetime_print(&xsinfo->lft, &xsinfo->curlft, fp, buf);
xfrm_stats_print(&xsinfo->stats, fp, buf);
}
if (tb[XFRMA_SEC_CTX]) {
struct xfrm_user_sec_ctx *sctx;
fprintf(fp, "\tsecurity context ");
if (RTA_PAYLOAD(tb[XFRMA_SEC_CTX]) < sizeof(*sctx))
fprintf(fp, "(ERROR truncated)");
sctx = RTA_DATA(tb[XFRMA_SEC_CTX]);
fprintf(fp, "%s %s", (char *)(sctx + 1), _SL_);
}
}
void xfrm_policy_info_print(struct xfrm_userpolicy_info *xpinfo,
struct rtattr *tb[], FILE *fp, const char *prefix,
const char *title)
{
char buf[STRBUF_SIZE] = {};
xfrm_selector_print(&xpinfo->sel, preferred_family, fp, title);
if (tb[XFRMA_SEC_CTX]) {
struct xfrm_user_sec_ctx *sctx;
fprintf(fp, "\tsecurity context ");
if (RTA_PAYLOAD(tb[XFRMA_SEC_CTX]) < sizeof(*sctx))
fprintf(fp, "(ERROR truncated)");
sctx = RTA_DATA(tb[XFRMA_SEC_CTX]);
fprintf(fp, "%s ", (char *)(sctx + 1));
fprintf(fp, "%s", _SL_);
}
if (prefix)
strlcat(buf, prefix, sizeof(buf));
strlcat(buf, "\t", sizeof(buf));
fputs(buf, fp);
if (xpinfo->dir >= XFRM_POLICY_MAX) {
xpinfo->dir -= XFRM_POLICY_MAX;
fprintf(fp, "socket ");
} else
fprintf(fp, "dir ");
switch (xpinfo->dir) {
case XFRM_POLICY_IN:
fprintf(fp, "in");
break;
case XFRM_POLICY_OUT:
fprintf(fp, "out");
break;
case XFRM_POLICY_FWD:
fprintf(fp, "fwd");
break;
default:
fprintf(fp, "%u", xpinfo->dir);
break;
}
fprintf(fp, " ");
switch (xpinfo->action) {
case XFRM_POLICY_ALLOW:
if (show_stats > 0)
fprintf(fp, "action allow ");
break;
case XFRM_POLICY_BLOCK:
fprintf(fp, "action block ");
break;
default:
fprintf(fp, "action %u ", xpinfo->action);
break;
}
if (show_stats)
fprintf(fp, "index %u ", xpinfo->index);
fprintf(fp, "priority %u ", xpinfo->priority);
if (tb[XFRMA_POLICY_TYPE]) {
struct xfrm_userpolicy_type *upt;
fprintf(fp, "ptype ");
if (RTA_PAYLOAD(tb[XFRMA_POLICY_TYPE]) < sizeof(*upt))
fprintf(fp, "(ERROR truncated)");
upt = RTA_DATA(tb[XFRMA_POLICY_TYPE]);
fprintf(fp, "%s ", strxf_ptype(upt->type));
}
if (show_stats > 0)
fprintf(fp, "share %s ", strxf_share(xpinfo->share));
if (show_stats > 0 || xpinfo->flags) {
__u8 flags = xpinfo->flags;
fprintf(fp, "flag ");
XFRM_FLAG_PRINT(fp, flags, XFRM_POLICY_LOCALOK, "localok");
XFRM_FLAG_PRINT(fp, flags, XFRM_POLICY_ICMP, "icmp");
if (flags)
fprintf(fp, "%x", flags);
}
if (show_stats > 0)
fprintf(fp, " (0x%s)", strxf_mask8(xpinfo->flags));
fprintf(fp, "%s", _SL_);
if (show_stats > 0)
xfrm_lifetime_print(&xpinfo->lft, &xpinfo->curlft, fp, buf);
xfrm_xfrma_print(tb, xpinfo->sel.family, fp, buf, false);
}
int xfrm_id_parse(xfrm_address_t *saddr, struct xfrm_id *id, __u16 *family,
int loose, int *argcp, char ***argvp)
{
int argc = *argcp;
char **argv = *argvp;
inet_prefix dst = {};
inet_prefix src = {};
while (1) {
if (strcmp(*argv, "src") == 0) {
NEXT_ARG();
get_prefix(&src, *argv, preferred_family);
if (src.family == AF_UNSPEC)
invarg("value after \"src\" has an unrecognized address family", *argv);
if (family)
*family = src.family;
memcpy(saddr, &src.data, sizeof(*saddr));
filter.id_src_mask = src.bitlen;
} else if (strcmp(*argv, "dst") == 0) {
NEXT_ARG();
get_prefix(&dst, *argv, preferred_family);
if (dst.family == AF_UNSPEC)
invarg("value after \"dst\" has an unrecognized address family", *argv);
if (family)
*family = dst.family;
memcpy(&id->daddr, &dst.data, sizeof(id->daddr));
filter.id_dst_mask = dst.bitlen;
} else if (strcmp(*argv, "proto") == 0) {
int ret;
NEXT_ARG();
ret = xfrm_xfrmproto_getbyname(*argv);
if (ret < 0)
invarg("XFRM-PROTO value is invalid", *argv);
id->proto = (__u8)ret;
filter.id_proto_mask = XFRM_FILTER_MASK_FULL;
} else if (strcmp(*argv, "spi") == 0) {
NEXT_ARG();
if (get_be32(&id->spi, *argv, 0))
invarg("SPI value is invalid", *argv);
filter.id_spi_mask = XFRM_FILTER_MASK_FULL;
} else {
PREV_ARG(); /* back track */
break;
}
if (!NEXT_ARG_OK())
break;
NEXT_ARG();
}
if (src.family && dst.family && (src.family != dst.family))
invarg("the same address family is required between values after \"src\" and \"dst\"", *argv);
if (id->spi && id->proto) {
if (xfrm_xfrmproto_is_ro(id->proto)) {
fprintf(stderr, "\"spi\" is invalid with XFRM-PROTO value \"%s\"\n",
strxf_xfrmproto(id->proto));
exit(1);
} else if (id->proto == IPPROTO_COMP && ntohl(id->spi) >= 0x10000) {
fprintf(stderr, "SPI value is too large with XFRM-PROTO value \"%s\"\n",
strxf_xfrmproto(id->proto));
exit(1);
}
}
if (loose == 0 && id->proto == 0)
missarg("XFRM-PROTO");
if (argc == *argcp)
missarg("ID");
*argcp = argc;
*argvp = argv;
return 0;
}
int xfrm_mode_parse(__u8 *mode, int *argcp, char ***argvp)
{
int argc = *argcp;
char **argv = *argvp;
if (matches(*argv, "transport") == 0)
*mode = XFRM_MODE_TRANSPORT;
else if (matches(*argv, "tunnel") == 0)
*mode = XFRM_MODE_TUNNEL;
else if (matches(*argv, "ro") == 0)
*mode = XFRM_MODE_ROUTEOPTIMIZATION;
else if (matches(*argv, "in_trigger") == 0)
*mode = XFRM_MODE_IN_TRIGGER;
else if (matches(*argv, "beet") == 0)
*mode = XFRM_MODE_BEET;
else
invarg("MODE value is invalid", *argv);
*argcp = argc;
*argvp = argv;
return 0;
}
int xfrm_encap_type_parse(__u16 *type, int *argcp, char ***argvp)
{
int argc = *argcp;
char **argv = *argvp;
if (strcmp(*argv, "espinudp-nonike") == 0)
*type = UDP_ENCAP_ESPINUDP_NON_IKE;
else if (strcmp(*argv, "espinudp") == 0)
*type = UDP_ENCAP_ESPINUDP;
else if (strcmp(*argv, "espintcp") == 0)
*type = TCP_ENCAP_ESPINTCP;
else
invarg("ENCAP-TYPE value is invalid", *argv);
*argcp = argc;
*argvp = argv;
return 0;
}
/* NOTE: reqid is used by host-byte order */
int xfrm_reqid_parse(__u32 *reqid, int *argcp, char ***argvp)
{
int argc = *argcp;
char **argv = *argvp;
if (get_u32(reqid, *argv, 0))
invarg("REQID value is invalid", *argv);
*argcp = argc;
*argvp = argv;
return 0;
}
static int xfrm_selector_upspec_parse(struct xfrm_selector *sel,
int *argcp, char ***argvp)
{
int argc = *argcp;
char **argv = *argvp;
char *sportp = NULL;
char *dportp = NULL;
char *typep = NULL;
char *codep = NULL;
char *grekey = NULL;
while (1) {
if (strcmp(*argv, "proto") == 0) {
__u8 upspec;
NEXT_ARG();
if (strcmp(*argv, "any") == 0)
upspec = 0;
else {
struct protoent *pp;
pp = getprotobyname(*argv);
if (pp)
upspec = pp->p_proto;
else {
if (get_u8(&upspec, *argv, 0))
invarg("PROTO value is invalid", *argv);
}
}
sel->proto = upspec;
filter.upspec_proto_mask = XFRM_FILTER_MASK_FULL;
} else if (strcmp(*argv, "sport") == 0) {
sportp = *argv;
NEXT_ARG();
if (get_be16(&sel->sport, *argv, 0))
invarg("value after \"sport\" is invalid", *argv);
if (sel->sport)
sel->sport_mask = ~((__u16)0);
filter.upspec_sport_mask = XFRM_FILTER_MASK_FULL;
} else if (strcmp(*argv, "dport") == 0) {
dportp = *argv;
NEXT_ARG();
if (get_be16(&sel->dport, *argv, 0))
invarg("value after \"dport\" is invalid", *argv);
if (sel->dport)
sel->dport_mask = ~((__u16)0);
filter.upspec_dport_mask = XFRM_FILTER_MASK_FULL;
} else if (strcmp(*argv, "type") == 0) {
typep = *argv;
NEXT_ARG();
if (get_u16(&sel->sport, *argv, 0) ||
(sel->sport & ~((__u16)0xff)))
invarg("value after \"type\" is invalid", *argv);
sel->sport = htons(sel->sport);
sel->sport_mask = ~((__u16)0);
filter.upspec_sport_mask = XFRM_FILTER_MASK_FULL;
} else if (strcmp(*argv, "code") == 0) {
codep = *argv;
NEXT_ARG();
if (get_u16(&sel->dport, *argv, 0) ||
(sel->dport & ~((__u16)0xff)))
invarg("value after \"code\" is invalid", *argv);
sel->dport = htons(sel->dport);
sel->dport_mask = ~((__u16)0);
filter.upspec_dport_mask = XFRM_FILTER_MASK_FULL;
} else if (strcmp(*argv, "key") == 0) {
unsigned int uval;
grekey = *argv;
NEXT_ARG();
if (strchr(*argv, '.'))
uval = htonl(get_addr32(*argv));
else {
if (get_unsigned(&uval, *argv, 0) < 0) {
fprintf(stderr, "value after \"key\" is invalid\n");
exit(-1);
}
}
sel->sport = htons(uval >> 16);
sel->dport = htons(uval & 0xffff);
sel->sport_mask = ~((__u16)0);
sel->dport_mask = ~((__u16)0);
filter.upspec_dport_mask = XFRM_FILTER_MASK_FULL;
} else {
PREV_ARG(); /* back track */
break;
}
if (!NEXT_ARG_OK())
break;
NEXT_ARG();
}
if (argc == *argcp)
missarg("UPSPEC");
if (sportp || dportp) {
switch (sel->proto) {
case IPPROTO_TCP:
case IPPROTO_UDP:
case IPPROTO_SCTP:
case IPPROTO_DCCP:
case IPPROTO_IP: /* to allow shared SA for different protocols */
break;
default:
fprintf(stderr, "\"sport\" and \"dport\" are invalid with PROTO value \"%s\"\n", strxf_proto(sel->proto));
exit(1);
}
}
if (typep || codep) {
switch (sel->proto) {
case IPPROTO_ICMP:
case IPPROTO_ICMPV6:
case IPPROTO_MH:
break;
default:
fprintf(stderr, "\"type\" and \"code\" are invalid with PROTO value \"%s\"\n", strxf_proto(sel->proto));
exit(1);
}
}
if (grekey) {
switch (sel->proto) {
case IPPROTO_GRE:
break;
default:
fprintf(stderr, "\"key\" is invalid with PROTO value \"%s\"\n", strxf_proto(sel->proto));
exit(1);
}
}
*argcp = argc;
*argvp = argv;
return 0;
}
int xfrm_selector_parse(struct xfrm_selector *sel, int *argcp, char ***argvp)
{
int argc = *argcp;
char **argv = *argvp;
inet_prefix dst = {};
inet_prefix src = {};
char *upspecp = NULL;
while (1) {
if (strcmp(*argv, "src") == 0) {
NEXT_ARG();
get_prefix(&src, *argv, preferred_family);
if (src.family == AF_UNSPEC)
invarg("value after \"src\" has an unrecognized address family", *argv);
sel->family = src.family;
memcpy(&sel->saddr, &src.data, sizeof(sel->saddr));
sel->prefixlen_s = src.bitlen;
filter.sel_src_mask = src.bitlen;
} else if (strcmp(*argv, "dst") == 0) {
NEXT_ARG();
get_prefix(&dst, *argv, preferred_family);
if (dst.family == AF_UNSPEC)
invarg("value after \"dst\" has an unrecognized address family", *argv);
sel->family = dst.family;
memcpy(&sel->daddr, &dst.data, sizeof(sel->daddr));
sel->prefixlen_d = dst.bitlen;
filter.sel_dst_mask = dst.bitlen;
} else if (strcmp(*argv, "dev") == 0) {
int ifindex;
NEXT_ARG();
if (strcmp(*argv, "none") == 0)
ifindex = 0;
else {
ifindex = ll_name_to_index(*argv);
if (ifindex <= 0)
invarg("DEV value is invalid", *argv);
}
sel->ifindex = ifindex;
filter.sel_dev_mask = XFRM_FILTER_MASK_FULL;
} else {
if (upspecp) {
PREV_ARG(); /* back track */
break;
} else {
upspecp = *argv;
xfrm_selector_upspec_parse(sel, &argc, &argv);
}
}
if (!NEXT_ARG_OK())
break;
NEXT_ARG();
}
if (src.family && dst.family && (src.family != dst.family))
invarg("the same address family is required between values after \"src\" and \"dst\"", *argv);
if (argc == *argcp)
missarg("SELECTOR");
*argcp = argc;
*argvp = argv;
return 0;
}
int xfrm_lifetime_cfg_parse(struct xfrm_lifetime_cfg *lft,
int *argcp, char ***argvp)
{
int argc = *argcp;
char **argv = *argvp;
int ret;
if (strcmp(*argv, "time-soft") == 0) {
NEXT_ARG();
ret = get_u64(&lft->soft_add_expires_seconds, *argv, 0);
if (ret)
invarg("value after \"time-soft\" is invalid", *argv);
} else if (strcmp(*argv, "time-hard") == 0) {
NEXT_ARG();
ret = get_u64(&lft->hard_add_expires_seconds, *argv, 0);
if (ret)
invarg("value after \"time-hard\" is invalid", *argv);
} else if (strcmp(*argv, "time-use-soft") == 0) {
NEXT_ARG();
ret = get_u64(&lft->soft_use_expires_seconds, *argv, 0);
if (ret)
invarg("value after \"time-use-soft\" is invalid", *argv);
} else if (strcmp(*argv, "time-use-hard") == 0) {
NEXT_ARG();
ret = get_u64(&lft->hard_use_expires_seconds, *argv, 0);
if (ret)
invarg("value after \"time-use-hard\" is invalid", *argv);
} else if (strcmp(*argv, "byte-soft") == 0) {
NEXT_ARG();
ret = get_u64(&lft->soft_byte_limit, *argv, 0);
if (ret)
invarg("value after \"byte-soft\" is invalid", *argv);
} else if (strcmp(*argv, "byte-hard") == 0) {
NEXT_ARG();
ret = get_u64(&lft->hard_byte_limit, *argv, 0);
if (ret)
invarg("value after \"byte-hard\" is invalid", *argv);
} else if (strcmp(*argv, "packet-soft") == 0) {
NEXT_ARG();
ret = get_u64(&lft->soft_packet_limit, *argv, 0);
if (ret)
invarg("value after \"packet-soft\" is invalid", *argv);
} else if (strcmp(*argv, "packet-hard") == 0) {
NEXT_ARG();
ret = get_u64(&lft->hard_packet_limit, *argv, 0);
if (ret)
invarg("value after \"packet-hard\" is invalid", *argv);
} else
invarg("LIMIT value is invalid", *argv);
*argcp = argc;
*argvp = argv;
return 0;
}
int do_xfrm(int argc, char **argv)
{
memset(&filter, 0, sizeof(filter));
if (argc < 1)
usage();
if (matches(*argv, "state") == 0 ||
matches(*argv, "sa") == 0)
return do_xfrm_state(argc-1, argv+1);
else if (matches(*argv, "policy") == 0)
return do_xfrm_policy(argc-1, argv+1);
else if (matches(*argv, "monitor") == 0)
return do_xfrm_monitor(argc-1, argv+1);
else if (matches(*argv, "help") == 0) {
usage();
fprintf(stderr, "xfrm Object \"%s\" is unknown.\n", *argv);
exit(-1);
}
usage();
}