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cdae010076
tcpdump/print-isakmp.c
assar 3cd171317f remove non-STDC code
2000-07-01 03:38:59 +00:00

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/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
* 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.
* 3. Neither the name of the project nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``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 PROJECT OR CONTRIBUTORS 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.
*
*/
#ifndef lint
static const char rcsid[] =
"@(#) $Header: /tcpdump/master/tcpdump/print-isakmp.c,v 1.13 2000-07-01 03:39:05 assar Exp $ (LBL)";
#endif
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include <ctype.h>
#include <sys/param.h>
#include <sys/time.h>
#include <sys/socket.h>
struct mbuf;
struct rtentry;
#include <net/if.h>
#include <netinet/in.h>
#include <netinet/if_ether.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/ip_var.h>
#include <netinet/udp.h>
#include <netinet/udp_var.h>
#include <netinet/tcp.h>
#ifdef INET6
#include <netinet/ip6.h>
#endif
#include <stdio.h>
#include <netdb.h>
#include "isakmp.h"
#include "ipsec_doi.h"
#include "oakley.h"
#include "interface.h"
#include "addrtoname.h"
#include "extract.h" /* must come after interface.h */
#ifndef HAVE_SOCKADDR_STORAGE
#define sockaddr_storage sockaddr
#endif
static u_char *isakmp_sa_print __P((struct isakmp_gen *, u_char *, u_int32_t,
u_int32_t, u_int32_t));
static u_char *isakmp_p_print __P((struct isakmp_gen *, u_char *, u_int32_t,
u_int32_t, u_int32_t));
static u_char *isakmp_t_print __P((struct isakmp_gen *, u_char *, u_int32_t,
u_int32_t, u_int32_t));
static u_char *isakmp_ke_print __P((struct isakmp_gen *, u_char *, u_int32_t,
u_int32_t, u_int32_t));
static u_char *isakmp_id_print __P((struct isakmp_gen *, u_char *, u_int32_t,
u_int32_t, u_int32_t));
static u_char *isakmp_cert_print __P((struct isakmp_gen *, u_char *, u_int32_t,
u_int32_t, u_int32_t));
static u_char *isakmp_sig_print __P((struct isakmp_gen *, u_char *, u_int32_t,
u_int32_t, u_int32_t));
static u_char *isakmp_hash_print __P((struct isakmp_gen *, u_char *,
u_int32_t, u_int32_t, u_int32_t));
static u_char *isakmp_nonce_print __P((struct isakmp_gen *, u_char *,
u_int32_t, u_int32_t, u_int32_t));
static u_char *isakmp_n_print __P((struct isakmp_gen *, u_char *, u_int32_t,
u_int32_t, u_int32_t));
static u_char *isakmp_d_print __P((struct isakmp_gen *, u_char *, u_int32_t,
u_int32_t, u_int32_t));
static u_char *isakmp_vid_print __P((struct isakmp_gen *, u_char *, u_int32_t,
u_int32_t, u_int32_t));
static u_char *isakmp_sub0_print __P((u_char, struct isakmp_gen *, u_char *,
u_int32_t, u_int32_t, u_int32_t));
static u_char *isakmp_sub_print __P((u_char, struct isakmp_gen *, u_char *,
u_int32_t, u_int32_t, u_int32_t));
static char *numstr __P((int));
#define MAXINITIATORS 20
int ninitiator = 0;
struct {
cookie_t initiator;
struct sockaddr_storage iaddr;
struct sockaddr_storage raddr;
} cookiecache[MAXINITIATORS];
/* protocol id */
static char *protoidstr[] = {
NULL, "isakmp", "ipsec-ah", "ipsec-esp", "ipcomp",
};
/* isakmp->np */
static char *npstr[] = {
"none", "sa", "p", "t", "ke", "id", "cert", "cr", "hash",
"sig", "nonce", "n", "d", "vid"
};
/* isakmp->np */
static u_char *(*npfunc[]) __P((struct isakmp_gen *, u_char *, u_int32_t,
u_int32_t, u_int32_t)) = {
NULL,
isakmp_sa_print,
isakmp_p_print,
isakmp_t_print,
isakmp_ke_print,
isakmp_id_print,
isakmp_cert_print,
isakmp_cert_print,
isakmp_hash_print,
isakmp_sig_print,
isakmp_nonce_print,
isakmp_n_print,
isakmp_d_print,
isakmp_vid_print,
};
/* isakmp->etype */
static char *etypestr[] = {
"none", "base", "ident", "auth", "agg", "inf", NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL,
"oakley-quick", "oakley-newgroup",
};
#define STR_OR_ID(x, tab) \
(((x) < sizeof(tab)/sizeof(tab[0]) && tab[(x)]) ? tab[(x)] : numstr(x))
#define PROTOIDSTR(x) STR_OR_ID(x, protoidstr)
#define NPSTR(x) STR_OR_ID(x, npstr)
#define ETYPESTR(x) STR_OR_ID(x, etypestr)
#define NPFUNC(x) \
(((x) < sizeof(npfunc)/sizeof(npfunc[0]) && npfunc[(x)]) \
? npfunc[(x)] : NULL)
static int
iszero(u_char *p, size_t l)
{
while (l--) {
if (*p++)
return 0;
}
return 1;
}
/* find cookie from initiator cache */
static int
cookie_find(cookie_t *in)
{
int i;
for (i = 0; i < MAXINITIATORS; i++) {
if (memcmp(in, &cookiecache[i].initiator, sizeof(*in)) == 0)
return i;
}
return -1;
}
/* record initiator */
static void
cookie_record(cookie_t *in, const u_char *bp2)
{
int i;
struct ip *ip;
struct sockaddr_in *sin;
#ifdef INET6
struct ip6_hdr *ip6;
struct sockaddr_in6 *sin6;
#endif
i = cookie_find(in);
if (0 <= i) {
ninitiator = (i + 1) % MAXINITIATORS;
return;
}
ip = (struct ip *)bp2;
switch (ip->ip_v) {
case 4:
memset(&cookiecache[ninitiator].iaddr, 0,
sizeof(cookiecache[ninitiator].iaddr));
memset(&cookiecache[ninitiator].raddr, 0,
sizeof(cookiecache[ninitiator].raddr));
sin = (struct sockaddr_in *)&cookiecache[ninitiator].iaddr;
#ifdef HAVE_SOCKADDR_SA_LEN
sin->sin_len = sizeof(struct sockaddr_in);
#endif
sin->sin_family = AF_INET;
memcpy(&sin->sin_addr, &ip->ip_src, sizeof(ip->ip_src));
sin = (struct sockaddr_in *)&cookiecache[ninitiator].raddr;
#ifdef HAVE_SOCKADDR_SA_LEN
sin->sin_len = sizeof(struct sockaddr_in);
#endif
sin->sin_family = AF_INET;
memcpy(&sin->sin_addr, &ip->ip_dst, sizeof(ip->ip_dst));
break;
#ifdef INET6
case 6:
memset(&cookiecache[ninitiator].iaddr, 0,
sizeof(cookiecache[ninitiator].iaddr));
memset(&cookiecache[ninitiator].raddr, 0,
sizeof(cookiecache[ninitiator].raddr));
ip6 = (struct ip6_hdr *)bp2;
sin6 = (struct sockaddr_in6 *)&cookiecache[ninitiator].iaddr;
#ifdef HAVE_SOCKADDR_SA_LEN
sin6->sin6_len = sizeof(struct sockaddr_in6);
#endif
sin6->sin6_family = AF_INET6;
memcpy(&sin6->sin6_addr, &ip6->ip6_src, sizeof(ip6->ip6_src));
sin6 = (struct sockaddr_in6 *)&cookiecache[ninitiator].raddr;
#ifdef HAVE_SOCKADDR_SA_LEN
sin6->sin6_len = sizeof(struct sockaddr_in6);
#endif
sin6->sin6_family = AF_INET6;
memcpy(&sin6->sin6_addr, &ip6->ip6_dst, sizeof(ip6->ip6_dst));
break;
#endif
default:
return;
}
memcpy(&cookiecache[ninitiator].initiator, in, sizeof(*in));
ninitiator = (ninitiator + 1) % MAXINITIATORS;
}
#define cookie_isinitiator(x, y) cookie_sidecheck((x), (y), 1)
#define cookie_isresponder(x, y) cookie_sidecheck((x), (y), 0)
static int
cookie_sidecheck(int i, const u_char *bp2, int initiator)
{
struct sockaddr_storage ss;
struct sockaddr *sa;
struct ip *ip;
struct sockaddr_in *sin;
#ifdef INET6
struct ip6_hdr *ip6;
struct sockaddr_in6 *sin6;
#endif
int salen;
memset(&ss, 0, sizeof(ss));
ip = (struct ip *)bp2;
switch (ip->ip_v) {
case 4:
sin = (struct sockaddr_in *)&ss;
#ifdef HAVE_SOCKADDR_SA_LEN
sin->sin_len = sizeof(struct sockaddr_in);
#endif
sin->sin_family = AF_INET;
memcpy(&sin->sin_addr, &ip->ip_src, sizeof(ip->ip_src));
break;
#ifdef INET6
case 6:
ip6 = (struct ip6_hdr *)bp2;
sin6 = (struct sockaddr_in6 *)&ss;
#ifdef HAVE_SOCKADDR_SA_LEN
sin6->sin6_len = sizeof(struct sockaddr_in6);
#endif
sin6->sin6_family = AF_INET6;
memcpy(&sin6->sin6_addr, &ip6->ip6_src, sizeof(ip6->ip6_src));
break;
#endif
default:
return 0;
}
sa = (struct sockaddr *)&ss;
if (initiator) {
if (sa->sa_family != ((struct sockaddr *)&cookiecache[i].iaddr)->sa_family)
return 0;
#ifdef HAVE_SOCKADDR_SA_LEN
salen = sa->sa_len;
#else
#ifdef INET6
if (sa->sa_family == AF_INET6)
salen = sizeof(struct sockaddr_in6);
else
salen = sizeof(struct sockaddr);
#else
salen = sizeof(struct sockaddr);
#endif
#endif
if (memcmp(&ss, &cookiecache[i].iaddr, salen) == 0)
return 1;
} else {
if (sa->sa_family != ((struct sockaddr *)&cookiecache[i].raddr)->sa_family)
return 0;
#ifdef HAVE_SOCKADDR_SA_LEN
salen = sa->sa_len;
#else
#ifdef INET6
if (sa->sa_family == AF_INET6)
salen = sizeof(struct sockaddr_in6);
else
salen = sizeof(struct sockaddr);
#else
salen = sizeof(struct sockaddr);
#endif
#endif
if (memcmp(&ss, &cookiecache[i].raddr, salen) == 0)
return 1;
}
return 0;
}
static void
rawprint(caddr_t loc, size_t len)
{
static u_char *p;
int i;
p = (u_char *)loc;
for (i = 0; i < len; i++)
printf("%02x", p[i] & 0xff);
}
struct attrmap {
char *type;
int nvalue;
char *value[30]; /*XXX*/
};
static u_char *
isakmp_attrmap_print(u_char *p, u_char *ep, struct attrmap *map, size_t nmap)
{
u_int16_t *q;
int totlen;
u_int32_t t, v;
q = (u_int16_t *)p;
if (p[0] & 0x80)
totlen = 4;
else
totlen = 4 + ntohs(q[1]);
if (ep < p + totlen) {
printf("[|attr]");
return ep + 1;
}
printf("(");
t = ntohs(q[0]) & 0x7fff;
if (map && t < nmap && map[t].type)
printf("type=%s ", map[t].type);
else
printf("type=#%d ", t);
if (p[0] & 0x80) {
printf("value=");
v = ntohs(q[1]);
if (map && t < nmap && v < map[t].nvalue && map[t].value[v])
printf("%s", map[t].value[v]);
else
rawprint((caddr_t)&q[1], 2);
} else {
printf("len=%d value=", ntohs(q[1]));
rawprint((caddr_t)&p[4], ntohs(q[1]));
}
printf(")");
return p + totlen;
}
static u_char *
isakmp_attr_print(u_char *p, u_char *ep)
{
u_int16_t *q;
int totlen;
u_int32_t t;
q = (u_int16_t *)p;
if (p[0] & 0x80)
totlen = 4;
else
totlen = 4 + ntohs(q[1]);
if (ep < p + totlen) {
printf("[|attr]");
return ep + 1;
}
printf("(");
t = ntohs(q[0]) & 0x7fff;
printf("type=#%d ", t);
if (p[0] & 0x80) {
printf("value=");
t = q[1];
rawprint((caddr_t)&q[1], 2);
} else {
printf("len=%d value=", ntohs(q[1]));
rawprint((caddr_t)&p[2], ntohs(q[1]));
}
printf(")");
return p + totlen;
}
static u_char *
isakmp_sa_print(struct isakmp_gen *ext, u_char *ep, u_int32_t phase,
u_int32_t doi0, u_int32_t proto0)
{
struct isakmp_pl_sa *p;
u_int32_t *q;
u_int32_t doi;
u_int32_t sit;
u_char *cp;
int t;
printf("%s:", NPSTR(ISAKMP_NPTYPE_SA));
p = (struct isakmp_pl_sa *)ext;
doi = ntohl(p->doi);
if (doi != 1) {
printf(" doi=%d", doi);
printf(" situation=%u", (u_int32_t)ntohl(p->sit));
return (u_char *)(p + 1);
}
printf(" doi=ipsec");
q = (u_int32_t *)&p->sit;
printf(" situation=");
t = 0;
if (ntohl(*q) & 0x01) {
printf("identity");
t++;
}
if (ntohl(*q) & 0x02) {
printf("%ssecrecy", t ? "+" : "");
t++;
}
if (ntohl(*q) & 0x04)
printf("%sintegrity", t ? "+" : "");
sit = htonl(*q++);
if (sit != 0x01)
printf(" ident=%u", (u_int32_t)ntohl(*q++));
ext = (struct isakmp_gen *)q;
cp = isakmp_sub_print(ISAKMP_NPTYPE_P, ext, ep, phase, doi, proto0);
return cp;
}
static u_char *
isakmp_p_print(struct isakmp_gen *ext, u_char *ep, u_int32_t phase,
u_int32_t doi0, u_int32_t proto0)
{
struct isakmp_pl_p *p;
u_char *cp;
printf("%s:", NPSTR(ISAKMP_NPTYPE_P));
p = (struct isakmp_pl_p *)ext;
printf(" #%d protoid=%s transform=%d",
p->p_no, PROTOIDSTR(p->prot_id), p->num_t);
if (p->spi_size) {
printf(" spi=");
rawprint((caddr_t)(p + 1), p->spi_size);
}
ext = (struct isakmp_gen *)((u_char *)(p + 1) + p->spi_size);
cp = isakmp_sub_print(ISAKMP_NPTYPE_T, ext, ep, phase, doi0,
p->prot_id);
return cp;
}
static char *isakmp_p_map[] = {
NULL, "ike",
};
static char *ah_p_map[] = {
NULL, "(reserved)", "md5", "sha", "1des",
};
static char *esp_p_map[] = {
NULL, "1des-iv64", "1des", "3des", "rc5", "idea", "cast",
"blowfish", "3idea", "1des-iv32", "rc4", "null"
};
static char *ipcomp_p_map[] = {
NULL, "oui", "deflate", "lzs",
};
struct attrmap ipsec_t_map[] = {
{ NULL, 0, },
{ "lifetype", 3, { NULL, "sec", "kb", }, },
{ "life", 0, },
{ "group desc", 5, { NULL, "modp768", "modp1024", "EC2N 2^155",
"EC2N 2^185", }, },
{ "enc mode", 3, { NULL, "tunnel", "transport", }, },
{ "auth", 5, { NULL, "hmac-md5", "hmac-sha1", "1des-mac", "keyed", }, },
{ "keylen", 0, },
{ "rounds", 0, },
{ "dictsize", 0, },
{ "privalg", 0, },
};
struct attrmap oakley_t_map[] = {
{ NULL, 0 },
{ "enc", 7, { NULL, "1des", "idea", "blowfish", "rc5",
"3des", "cast"}, },
{ "hash", 4, { NULL, "md5", "sha1", "tiger", }, },
{ "auth", 6, { NULL, "preshared", "dss", "rsa sig", "rsa enc",
"rsa enc revised", }, },
{ "group desc", 5, { NULL, "modp768", "modp1024", "EC2N 2^155",
"EC2N 2^185", }, },
{ "group type", 4, { NULL, "MODP", "ECP", "EC2N", }, },
{ "group prime", 0, },
{ "group gen1", 0, },
{ "group gen2", 0, },
{ "group curve A", 0, },
{ "group curve B", 0, },
{ "lifetype", 3, { NULL, "sec", "kb", }, },
{ "lifeduration", 0, },
{ "prf", 0, },
{ "keylen", 0, },
{ "field", 0, },
{ "order", 0, },
};
static u_char *
isakmp_t_print(struct isakmp_gen *ext, u_char *ep, u_int32_t phase,
u_int32_t doi, u_int32_t proto)
{
struct isakmp_pl_t *p;
u_char *cp;
char *idstr;
struct attrmap *map;
size_t nmap;
u_char *ep2;
printf("%s:", NPSTR(ISAKMP_NPTYPE_T));
p = (struct isakmp_pl_t *)ext;
switch (proto) {
case 1:
idstr = STR_OR_ID(p->t_id, isakmp_p_map);
map = oakley_t_map;
nmap = sizeof(oakley_t_map)/sizeof(oakley_t_map[0]);
break;
case 2:
idstr = STR_OR_ID(p->t_id, ah_p_map);
map = ipsec_t_map;
nmap = sizeof(ipsec_t_map)/sizeof(ipsec_t_map[0]);
break;
case 3:
idstr = STR_OR_ID(p->t_id, esp_p_map);
map = ipsec_t_map;
nmap = sizeof(ipsec_t_map)/sizeof(ipsec_t_map[0]);
break;
case 4:
idstr = STR_OR_ID(p->t_id, ipcomp_p_map);
map = ipsec_t_map;
nmap = sizeof(ipsec_t_map)/sizeof(ipsec_t_map[0]);
break;
default:
idstr = NULL;
map = NULL;
nmap = 0;
break;
}
if (idstr)
printf(" #%d id=%s ", p->t_no, idstr);
else
printf(" #%d id=%d ", p->t_no, p->t_id);
cp = (u_char *)(p + 1);
ep2 = (u_char *)p + ntohs(ext->len);
while (cp < ep && cp < ep2) {
if (map && nmap) {
cp = isakmp_attrmap_print(cp, (ep < ep2) ? ep : ep2,
map, nmap);
} else
cp = isakmp_attr_print(cp, (ep < ep2) ? ep : ep2);
}
if (ep < ep2)
printf("...");
return cp;
}
static u_char *
isakmp_ke_print(struct isakmp_gen *ext, u_char *ep, u_int32_t phase,
u_int32_t doi, u_int32_t proto)
{
printf("%s:", NPSTR(ISAKMP_NPTYPE_KE));
printf(" key len=%d", ntohs(ext->len) - 4);
if (2 < vflag && 4 < ntohs(ext->len)) {
printf(" ");
rawprint((caddr_t)(ext + 1), ntohs(ext->len) - 4);
}
return (u_char *)ext + ntohs(ext->len);
}
static u_char *
isakmp_id_print(struct isakmp_gen *ext, u_char *ep, u_int32_t phase,
u_int32_t doi, u_int32_t proto)
{
#define USE_IPSECDOI_IN_PHASE1 1
struct isakmp_pl_id *p;
static char *idtypestr[] = {
"IPv4", "IPv4net", "IPv6", "IPv6net",
};
static char *ipsecidtypestr[] = {
NULL, "IPv4", "FQDN", "user FQDN", "IPv4net", "IPv6",
"IPv6net", "IPv4range", "IPv6range", "ASN1 DN", "ASN1 GN",
"keyid",
};
int len;
u_char *data;
printf("%s:", NPSTR(ISAKMP_NPTYPE_ID));
p = (struct isakmp_pl_id *)ext;
if (sizeof(*p) < ext->len)
data = (u_char *)(p + 1);
else
data = NULL;
len = ntohs(ext->len) - sizeof(*p);
#if 0 /*debug*/
printf(" [phase=%d doi=%d proto=%d]", phase, doi, proto);
#endif
switch (phase) {
#ifndef USE_IPSECDOI_IN_PHASE1
case 1:
#endif
default:
printf(" idtype=%s", STR_OR_ID(p->d.id_type, idtypestr));
printf(" doi_data=%u",
(u_int32_t)(ntohl(p->d.doi_data) & 0xffffff));
break;
#ifdef USE_IPSECDOI_IN_PHASE1
case 1:
#endif
case 2:
{
struct ipsecdoi_id *p;
struct protoent *pe;
p = (struct ipsecdoi_id *)ext;
printf(" idtype=%s", STR_OR_ID(p->type, ipsecidtypestr));
setprotoent(1);
pe = getprotobynumber(p->proto_id);
if (pe)
printf(" protoid=%s", pe->p_name);
else
printf(" protoid=%s", PROTOIDSTR(p->proto_id));
endprotoent();
printf(" port=%d", ntohs(p->port));
if (!len)
break;
switch (p->type) {
case IPSECDOI_ID_IPV4_ADDR:
printf(" len=%d %s", len, ipaddr_string(data));
len = 0;
break;
case IPSECDOI_ID_FQDN:
case IPSECDOI_ID_USER_FQDN:
{
int i;
printf(" len=%d ", len);
for (i = 0; i < len; i++) {
if (isprint(data[i]))
printf("%c", data[i]);
else
printf("\\%03o", data[i]);
}
len = 0;
break;
}
case IPSECDOI_ID_IPV4_ADDR_SUBNET:
{
u_char *mask;
mask = data + sizeof(struct in_addr);
printf(" len=%d %s/%u.%u.%u.%u", len,
ipaddr_string(data),
mask[0], mask[1], mask[2], mask[3]);
len = 0;
break;
}
#ifdef INET6
case IPSECDOI_ID_IPV6_ADDR:
printf(" len=%d %s", len, ip6addr_string(data));
len = 0;
break;
case IPSECDOI_ID_IPV6_ADDR_SUBNET:
{
u_int32_t *mask;
mask = (u_int32_t *)(data + sizeof(struct in6_addr));
/*XXX*/
printf(" len=%d %s/0x%08x%08x%08x%08x", len,
ip6addr_string(data),
mask[0], mask[1], mask[2], mask[3]);
len = 0;
break;
}
#endif /*INET6*/
case IPSECDOI_ID_IPV4_ADDR_RANGE:
printf(" len=%d %s-%s", len, ipaddr_string(data),
ipaddr_string(data + sizeof(struct in_addr)));
len = 0;
break;
#ifdef INET6
case IPSECDOI_ID_IPV6_ADDR_RANGE:
printf(" len=%d %s-%s", len, ip6addr_string(data),
ip6addr_string(data + sizeof(struct in6_addr)));
len = 0;
break;
#endif /*INET6*/
case IPSECDOI_ID_DER_ASN1_DN:
case IPSECDOI_ID_DER_ASN1_GN:
case IPSECDOI_ID_KEY_ID:
break;
}
break;
}
}
if (data && len) {
len -= sizeof(*p);
printf(" len=%d", len);
if (2 < vflag) {
printf(" ");
rawprint((caddr_t)data, len);
}
}
return (u_char *)ext + ntohs(ext->len);
}
static u_char *
isakmp_cert_print(struct isakmp_gen *ext, u_char *ep, u_int32_t phase,
u_int32_t doi0, u_int32_t proto0)
{
struct isakmp_pl_cert *p;
static char *certstr[] = {
"none", "pkcs7", "pgp", "dns",
"x509sign", "x509ke", "kerberos", "crl",
"arl", "spki", "x509attr",
};
printf("%s:", NPSTR(ISAKMP_NPTYPE_CERT));
p = (struct isakmp_pl_cert *)ext;
printf(" len=%d", ntohs(ext->len) - 4);
printf(" type=%s", STR_OR_ID((p->encode), certstr));
if (2 < vflag && 4 < ntohs(ext->len)) {
printf(" ");
rawprint((caddr_t)(ext + 1), ntohs(ext->len) - 4);
}
return (u_char *)ext + ntohs(ext->len);
}
static u_char *
isakmp_hash_print(struct isakmp_gen *ext, u_char *ep, u_int32_t phase,
u_int32_t doi, u_int32_t proto)
{
printf("%s:", NPSTR(ISAKMP_NPTYPE_HASH));
printf(" len=%d", ntohs(ext->len) - 4);
if (2 < vflag && 4 < ntohs(ext->len)) {
printf(" ");
rawprint((caddr_t)(ext + 1), ntohs(ext->len) - 4);
}
return (u_char *)ext + ntohs(ext->len);
}
static u_char *
isakmp_sig_print(struct isakmp_gen *ext, u_char *ep, u_int32_t phase,
u_int32_t doi, u_int32_t proto)
{
printf("%s:", NPSTR(ISAKMP_NPTYPE_SIG));
printf(" len=%d", ntohs(ext->len) - 4);
if (2 < vflag && 4 < ntohs(ext->len)) {
printf(" ");
rawprint((caddr_t)(ext + 1), ntohs(ext->len) - 4);
}
return (u_char *)ext + ntohs(ext->len);
}
static u_char *
isakmp_nonce_print(struct isakmp_gen *ext, u_char *ep, u_int32_t phase,
u_int32_t doi, u_int32_t proto)
{
printf("%s:", NPSTR(ISAKMP_NPTYPE_NONCE));
printf(" n len=%d", ntohs(ext->len) - 4);
if (2 < vflag && 4 < ntohs(ext->len)) {
printf(" ");
rawprint((caddr_t)(ext + 1), ntohs(ext->len) - 4);
}
return (u_char *)ext + ntohs(ext->len);
}
static u_char *
isakmp_n_print(struct isakmp_gen *ext, u_char *ep, u_int32_t phase,
u_int32_t doi0, u_int32_t proto0)
{
struct isakmp_pl_n *p;
u_char *cp;
u_char *ep2;
u_int32_t doi;
u_int32_t proto;
static char *notifystr[] = {
NULL, "INVALID-PAYLOAD-TYPE",
"DOI-NOT-SUPPORTED", "SITUATION-NOT-SUPPORTED",
"INVALID-COOKIE", "INVALID-MAJOR-VERSION",
"INVALID-MINOR-VERSION", "INVALID-EXCHANGE-TYPE",
"INVALID-FLAGS", "INVALID-MESSAGE-ID",
"INVALID-PROTOCOL-ID", "INVALID-SPI",
"INVALID-TRANSFORM-ID", "ATTRIBUTES-NOT-SUPPORTED",
"NO-PROPOSAL-CHOSEN", "BAD-PROPOSAL-SYNTAX",
"PAYLOAD-MALFORMED", "INVALID-KEY-INFORMATION",
"INVALID-ID-INFORMATION", "INVALID-CERT-ENCODING",
"INVALID-CERTIFICATE", "CERT-TYPE-UNSUPPORTED",
"INVALID-CERT-AUTHORITY", "INVALID-HASH-INFORMATION",
"AUTHENTICATION-FAILED", "INVALID-SIGNATURE",
"ADDRESS-NOTIFICATION", "NOTIFY-SA-LIFETIME",
"CERTIFICATE-UNAVAILABLE", "UNSUPPORTED-EXCHANGE-TYPE",
"UNEQUAL-PAYLOAD-LENGTHS",
};
static char *ipsecnotifystr[] = {
"RESPONDER-LIFETIME", "REPLAY-STATUS",
"INITIAL-CONTACT",
};
/* NOTE: these macro must be called with x in proper range */
#define NOTIFYSTR(x) \
(((x) == 16384) ? "CONNECTED" : STR_OR_ID((x), notifystr))
#define IPSECNOTIFYSTR(x) \
(((x) == 8192) ? "RESERVED" : STR_OR_ID(((x) - 24576), ipsecnotifystr))
printf("%s:", NPSTR(ISAKMP_NPTYPE_N));
p = (struct isakmp_pl_n *)ext;
doi = ntohl(p->doi);
proto = p->prot_id;
if (doi != 1) {
printf(" doi=%d", doi);
printf(" proto=%d", proto);
printf(" type=%s", NOTIFYSTR(ntohs(p->type)));
if (p->spi_size) {
printf(" spi=");
rawprint((caddr_t)(p + 1), p->spi_size);
}
return (u_char *)(p + 1) + p->spi_size;
}
printf(" doi=ipsec");
printf(" proto=%s", PROTOIDSTR(proto));
if (ntohs(p->type) < 8192)
printf(" type=%s", NOTIFYSTR(ntohs(p->type)));
else if (ntohs(p->type) < 16384)
printf(" type=%s", IPSECNOTIFYSTR(ntohs(p->type)));
else if (ntohs(p->type) < 24576)
printf(" type=%s", NOTIFYSTR(ntohs(p->type)));
else if (ntohs(p->type) < 40960)
printf(" type=%s", IPSECNOTIFYSTR(ntohs(p->type)));
else
printf(" type=%s", NOTIFYSTR(ntohs(p->type)));
if (p->spi_size) {
printf(" spi=");
rawprint((caddr_t)(p + 1), p->spi_size);
}
cp = (u_char *)(p + 1) + p->spi_size;
ep2 = (u_char *)p + ntohs(ext->len);
if (cp < ep) {
printf(" orig=(");
switch (ntohs(p->type)) {
case IPSECDOI_NTYPE_RESPONDER_LIFETIME:
{
struct attrmap *map = oakley_t_map;
size_t nmap = sizeof(oakley_t_map)/sizeof(oakley_t_map[0]);
while (cp < ep && cp < ep2) {
cp = isakmp_attrmap_print(cp,
(ep < ep2) ? ep : ep2, map, nmap);
}
break;
}
case IPSECDOI_NTYPE_REPLAY_STATUS:
printf("replay detection %sabled",
(*(u_int32_t *)cp) ? "en" : "dis");
break;
case ISAKMP_NTYPE_NO_PROPOSAL_CHOSEN:
isakmp_sub_print(ISAKMP_NPTYPE_SA,
(struct isakmp_gen *)cp, ep, phase, doi, proto);
break;
default:
/* NULL is dummy */
isakmp_print(cp,
ntohs(ext->len) - sizeof(*p) - p->spi_size,
NULL);
}
printf(")");
}
return (u_char *)ext + ntohs(ext->len);
}
static u_char *
isakmp_d_print(struct isakmp_gen *ext, u_char *ep, u_int32_t phase,
u_int32_t doi0, u_int32_t proto0)
{
struct isakmp_pl_d *p;
u_int8_t *q;
u_int32_t doi;
u_int32_t proto;
int i;
printf("%s:", NPSTR(ISAKMP_NPTYPE_D));
p = (struct isakmp_pl_d *)ext;
doi = ntohl(p->doi);
proto = p->prot_id;
if (doi != 1) {
printf(" doi=%u", doi);
printf(" proto=%u", proto);
} else {
printf(" doi=ipsec");
printf(" proto=%s", PROTOIDSTR(proto));
}
printf(" spilen=%u", p->spi_size);
printf(" nspi=%u", ntohs(p->num_spi));
printf(" spi=");
q = (u_int8_t *)(p + 1);
for (i = 0; i < ntohs(p->num_spi); i++) {
if (i != 0)
printf(",");
rawprint((caddr_t)q, p->spi_size);
q += p->spi_size;
}
return q;
}
static u_char *
isakmp_vid_print(struct isakmp_gen *ext, u_char *ep, u_int32_t phase,
u_int32_t doi, u_int32_t proto)
{
printf("%s:", NPSTR(ISAKMP_NPTYPE_VID));
printf(" len=%d", ntohs(ext->len) - 4);
if (2 < vflag && 4 < ntohs(ext->len)) {
printf(" ");
rawprint((caddr_t)(ext + 1), ntohs(ext->len) - 4);
}
return (u_char *)ext + ntohs(ext->len);
}
static u_char *
isakmp_sub0_print(u_char np, struct isakmp_gen *ext, u_char *ep,
u_int32_t phase, u_int32_t doi, u_int32_t proto)
{
u_char *cp;
cp = (u_char *)ext;
if (NPFUNC(np))
cp = (*NPFUNC(np))(ext, ep, phase, doi, proto);
else {
printf("%s", NPSTR(np));
cp += ntohs(ext->len);
}
return cp;
}
static u_char *
isakmp_sub_print(u_char np, struct isakmp_gen *ext, u_char *ep,
u_int32_t phase, u_int32_t doi, u_int32_t proto)
{
u_char *cp;
static int depth = 0;
int i;
cp = (u_char *)ext;
while (np) {
if (ep < (u_char *)ext + ntohs(ext->len)) {
printf(" [|%s]", NPSTR(np));
cp = ep + 1;
break;
}
depth++;
printf("\n");
for (i = 0; i < depth; i++)
printf(" ");
printf("(");
cp = isakmp_sub0_print(np, ext, ep, phase, doi, proto);
printf(")");
depth--;
np = ext->np;
ext = (struct isakmp_gen *)cp;
}
return cp;
}
static char *
numstr(int x)
{
static char buf[20];
snprintf(buf, sizeof(buf), "#%d", x);
return buf;
}
void
isakmp_print(const u_char *bp, u_int length, const u_char *bp2)
{
struct isakmp *base;
u_char *ep;
u_char np;
int i;
int phase;
int major, minor;
base = (struct isakmp *)bp;
ep = (u_char *)snapend;
if ((struct isakmp *)ep < base + 1) {
printf("[|isakmp]");
return;
}
printf("isakmp");
if (vflag) {
major = (base->vers & ISAKMP_VERS_MAJOR)
>> ISAKMP_VERS_MAJOR_SHIFT;
minor = (base->vers & ISAKMP_VERS_MINOR)
>> ISAKMP_VERS_MINOR_SHIFT;
printf(" %d.%d", major, minor);
}
if (vflag) {
printf(" msgid ");
rawprint((caddr_t)&base->msgid, sizeof(base->msgid));
}
if (1 < vflag) {
printf(" cookie ");
rawprint((caddr_t)&base->i_ck, sizeof(base->i_ck));
printf("->");
rawprint((caddr_t)&base->r_ck, sizeof(base->r_ck));
}
printf(":");
phase = (*(u_int32_t *)base->msgid == 0) ? 1 : 2;
if (phase == 1)
printf(" phase %d", phase);
else
printf(" phase %d/others", phase);
i = cookie_find(&base->i_ck);
if (i < 0) {
if (iszero((u_char *)&base->r_ck, sizeof(base->r_ck))) {
/* the first packet */
printf(" I");
if (bp2)
cookie_record(&base->i_ck, bp2);
} else
printf(" ?");
} else {
if (bp2 && cookie_isinitiator(i, bp2))
printf(" I");
else if (bp2 && cookie_isresponder(i, bp2))
printf(" R");
else
printf(" ?");
}
printf(" %s", ETYPESTR(base->etype));
if (base->flags) {
printf("[%s%s]", base->flags & ISAKMP_FLAG_E ? "E" : "",
base->flags & ISAKMP_FLAG_C ? "C" : "");
}
printf(":");
{
struct isakmp_gen *ext;
int nparen;
#define CHECKLEN(p, np) \
if (ep < (u_char *)(p)) { \
printf(" [|%s]", NPSTR(np)); \
goto done; \
}
/* regardless of phase... */
if (base->flags & ISAKMP_FLAG_E) {
/*
* encrypted, nothing we can do right now.
* we hope to decrypt the packet in the future...
*/
printf(" [|%s]", NPSTR(base->np));
goto done;
}
nparen = 0;
CHECKLEN(base + 1, base->np)
np = base->np;
ext = (struct isakmp_gen *)(base + 1);
isakmp_sub_print(np, ext, ep, phase, 0, 0);
}
done:
if (vflag) {
if (ntohl(base->len) != length) {
printf(" (len mismatch: isakmp %u/ip %d)",
(u_int32_t)ntohl(base->len), length);
}
}
}
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