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print-isakmp.c
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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[] _U_ =
"@(#) $Header: /tcpdump/master/tcpdump/print-isakmp.c,v 1.61 2008-02-05 19:34:25 guy Exp $ (LBL)";
#endif
#define NETDISSECT_REWORKED
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <tcpdump-stdinc.h>
#include <string.h>
#include <stdio.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 */
#include "ip.h"
#ifdef INET6
#include "ip6.h"
#endif
#ifndef HAVE_SOCKADDR_STORAGE
#define sockaddr_storage sockaddr
#endif
#define DECLARE_PRINTER(func) static const u_char *ike##func##_print( \
netdissect_options *ndo, u_char tpay, \
const struct isakmp_gen *ext, \
u_int item_len, \
const u_char *end_pointer, \
u_int32_t phase,\
u_int32_t doi0, \
u_int32_t proto0, int depth)
DECLARE_PRINTER(v1_sa);
DECLARE_PRINTER(v1_p);
DECLARE_PRINTER(v1_t);
DECLARE_PRINTER(v1_ke);
DECLARE_PRINTER(v1_id);
DECLARE_PRINTER(v1_cert);
DECLARE_PRINTER(v1_cr);
DECLARE_PRINTER(v1_sig);
DECLARE_PRINTER(v1_hash);
DECLARE_PRINTER(v1_nonce);
DECLARE_PRINTER(v1_n);
DECLARE_PRINTER(v1_d);
DECLARE_PRINTER(v1_vid);
DECLARE_PRINTER(v2_sa);
DECLARE_PRINTER(v2_ke);
DECLARE_PRINTER(v2_ID);
DECLARE_PRINTER(v2_cert);
DECLARE_PRINTER(v2_cr);
DECLARE_PRINTER(v2_auth);
DECLARE_PRINTER(v2_nonce);
DECLARE_PRINTER(v2_n);
DECLARE_PRINTER(v2_d);
DECLARE_PRINTER(v2_vid);
DECLARE_PRINTER(v2_TS);
DECLARE_PRINTER(v2_cp);
DECLARE_PRINTER(v2_eap);
static const u_char *ikev2_e_print(netdissect_options *ndo,
struct isakmp *base,
u_char tpay,
const struct isakmp_gen *ext,
u_int item_len,
const u_char *end_pointer,
u_int32_t phase,
u_int32_t doi0,
u_int32_t proto0, int depth);
static const u_char *ike_sub0_print(netdissect_options *ndo,u_char, const struct isakmp_gen *,
const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
static const u_char *ikev1_sub_print(netdissect_options *ndo,u_char, const struct isakmp_gen *,
const u_char *, u_int32_t, u_int32_t, u_int32_t, int);
static const u_char *ikev2_sub_print(netdissect_options *ndo,
struct isakmp *base,
u_char np, const struct isakmp_gen *ext,
const u_char *ep, u_int32_t phase,
u_int32_t doi, u_int32_t proto,
int depth);
static char *numstr(int);
static void safememcpy(void *, const void *, size_t);
static void
ikev1_print(netdissect_options *ndo,
const u_char *bp, u_int length,
const u_char *bp2, struct isakmp *base);
#define MAXINITIATORS 20
int ninitiator = 0;
struct {
cookie_t initiator;
struct sockaddr_storage iaddr;
struct sockaddr_storage raddr;
} cookiecache[MAXINITIATORS];
/* protocol id */
static const char *protoidstr[] = {
NULL, "isakmp", "ipsec-ah", "ipsec-esp", "ipcomp",
};
/* isakmp->np */
static const char *npstr[] = {
"none", "sa", "p", "t", "ke", "id", "cert", "cr", "hash", /* 0 - 8 */
"sig", "nonce", "n", "d", "vid", /* 9 - 13 */
"pay14", "pay15", "pay16", "pay17", "pay18", /* 14- 18 */
"pay19", "pay20", "pay21", "pay22", "pay23", /* 19- 23 */
"pay24", "pay25", "pay26", "pay27", "pay28", /* 24- 28 */
"pay29", "pay30", "pay31", "pay32", /* 29- 32 */
"v2sa", "v2ke", "v2IDi", "v2IDr", "v2cert",/* 33- 37 */
"v2cr", "v2auth","v2nonce", "v2n", "v2d", /* 38- 42 */
"v2vid", "v2TSi", "v2TSr", "v2e", "v2cp", /* 43- 47 */
"v2eap", /* 48 */
};
/* isakmp->np */
static const u_char *(*npfunc[])(netdissect_options *ndo, u_char tpay,
const struct isakmp_gen *ext,
u_int item_len,
const u_char *end_pointer,
u_int32_t phase,
u_int32_t doi0,
u_int32_t proto0, int depth) = {
NULL,
ikev1_sa_print,
ikev1_p_print,
ikev1_t_print,
ikev1_ke_print,
ikev1_id_print,
ikev1_cert_print,
ikev1_cr_print,
ikev1_hash_print,
ikev1_sig_print,
ikev1_nonce_print,
ikev1_n_print,
ikev1_d_print,
ikev1_vid_print, /* 13 */
NULL, NULL, NULL, NULL, NULL, /* 14- 18 */
NULL, NULL, NULL, NULL, NULL, /* 19- 23 */
NULL, NULL, NULL, NULL, NULL, /* 24- 28 */
NULL, NULL, NULL, NULL, /* 29- 32 */
ikev2_sa_print, /* 33 */
ikev2_ke_print, /* 34 */
ikev2_ID_print, /* 35 */
ikev2_ID_print, /* 36 */
ikev2_cert_print, /* 37 */
ikev2_cr_print, /* 38 */
ikev2_auth_print, /* 39 */
ikev2_nonce_print, /* 40 */
ikev2_n_print, /* 41 */
ikev2_d_print, /* 42 */
ikev2_vid_print, /* 43 */
ikev2_TS_print, /* 44 */
ikev2_TS_print, /* 45 */
NULL, /* ikev2_e_print,*/ /* 46 - special */
ikev2_cp_print, /* 47 */
ikev2_eap_print, /* 48 */
};
/* isakmp->etype */
static const char *etypestr[] = {
/* IKEv1 exchange types */
"none", "base", "ident", "auth", "agg", "inf", NULL, NULL, /* 0-7 */
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 8-15 */
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 16-23 */
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, /* 24-31 */
"oakley-quick", "oakley-newgroup", /* 32-33 */
/* IKEv2 exchange types */
"ikev2_init", "ikev2_auth", "child_sa", "inf2" /* 34-37 */
};
#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 CHECKLEN(p, np) \
if (ep < (u_char *)(p)) { \
ND_PRINT((ndo," [|%s]", NPSTR(np))); \
goto done; \
}
#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_V(ip)) {
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_V(ip)) {
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
hexprint(netdissect_options *ndo, caddr_t loc, size_t len)
{
u_char *p;
size_t i;
p = (u_char *)loc;
for (i = 0; i < len; i++)
ND_PRINT((ndo,"%02x", p[i] & 0xff));
}
static int
rawprint(netdissect_options *ndo, caddr_t loc, size_t len)
{
ND_TCHECK2(*loc, len);
hexprint(ndo, loc, len);
return 1;
trunc:
return 0;
}
/*
* returns false if we run out of data buffer
*/
static int ike_show_somedata(struct netdissect_options *ndo,
const u_char *cp, const u_char *ep)
{
/* there is too much data, just show some of it */
const u_char *end = ep - 20;
int elen = 20;
int len = ep - cp;
if(len > 10) {
len = 10;
}
/* really shouldn't happen because of above */
if(end < cp + len) {
end = cp+len;
elen = ep - end;
}
ND_PRINT((ndo," data=("));
if(!rawprint(ndo, (caddr_t)(cp), len)) goto trunc;
ND_PRINT((ndo, "..."));
if(elen) {
if(!rawprint(ndo, (caddr_t)(end), elen)) goto trunc;
}
ND_PRINT((ndo,")"));
return 1;
trunc:
return 0;
}
struct attrmap {
const char *type;
u_int nvalue;
const char *value[30]; /*XXX*/
};
static const u_char *
ikev1_attrmap_print(netdissect_options *ndo,
const u_char *p, const u_char *ep,
const 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 + EXTRACT_16BITS(&q[1]);
if (ep < p + totlen) {
ND_PRINT((ndo,"[|attr]"));
return ep + 1;
}
ND_PRINT((ndo,"("));
t = EXTRACT_16BITS(&q[0]) & 0x7fff;
if (map && t < nmap && map[t].type)
ND_PRINT((ndo,"type=%s ", map[t].type));
else
ND_PRINT((ndo,"type=#%d ", t));
if (p[0] & 0x80) {
ND_PRINT((ndo,"value="));
v = EXTRACT_16BITS(&q[1]);
if (map && t < nmap && v < map[t].nvalue && map[t].value[v])
ND_PRINT((ndo,"%s", map[t].value[v]));
else
rawprint(ndo, (caddr_t)&q[1], 2);
} else {
ND_PRINT((ndo,"len=%d value=", EXTRACT_16BITS(&q[1])));
rawprint(ndo, (caddr_t)&p[4], EXTRACT_16BITS(&q[1]));
}
ND_PRINT((ndo,")"));
return p + totlen;
}
static const u_char *
ikev1_attr_print(netdissect_options *ndo, const u_char *p, const 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 + EXTRACT_16BITS(&q[1]);
if (ep < p + totlen) {
ND_PRINT((ndo,"[|attr]"));
return ep + 1;
}
ND_PRINT((ndo,"("));
t = EXTRACT_16BITS(&q[0]) & 0x7fff;
ND_PRINT((ndo,"type=#%d ", t));
if (p[0] & 0x80) {
ND_PRINT((ndo,"value="));
t = q[1];
rawprint(ndo, (caddr_t)&q[1], 2);
} else {
ND_PRINT((ndo,"len=%d value=", EXTRACT_16BITS(&q[1])));
rawprint(ndo, (caddr_t)&p[2], EXTRACT_16BITS(&q[1]));
}
ND_PRINT((ndo,")"));
return p + totlen;
}
static const u_char *
ikev1_sa_print(netdissect_options *ndo, u_char tpay _U_,
const struct isakmp_gen *ext,
u_int item_len _U_,
const u_char *ep, u_int32_t phase, u_int32_t doi0 _U_,
u_int32_t proto0, int depth)
{
const struct ikev1_pl_sa *p;
struct ikev1_pl_sa sa;
const u_int32_t *q;
u_int32_t doi, sit, ident;
const u_char *cp, *np;
int t;
ND_PRINT((ndo,"%s:", NPSTR(ISAKMP_NPTYPE_SA)));
p = (struct ikev1_pl_sa *)ext;
ND_TCHECK(*p);
safememcpy(&sa, ext, sizeof(sa));
doi = ntohl(sa.doi);
sit = ntohl(sa.sit);
if (doi != 1) {
ND_PRINT((ndo," doi=%d", doi));
ND_PRINT((ndo," situation=%u", (u_int32_t)ntohl(sa.sit)));
return (u_char *)(p + 1);
}
ND_PRINT((ndo," doi=ipsec"));
q = (u_int32_t *)&sa.sit;
ND_PRINT((ndo," situation="));
t = 0;
if (sit & 0x01) {
ND_PRINT((ndo,"identity"));
t++;
}
if (sit & 0x02) {
ND_PRINT((ndo,"%ssecrecy", t ? "+" : ""));
t++;
}
if (sit & 0x04)
ND_PRINT((ndo,"%sintegrity", t ? "+" : ""));
np = (u_char *)ext + sizeof(sa);
if (sit != 0x01) {
ND_TCHECK2(*(ext + 1), sizeof(ident));
safememcpy(&ident, ext + 1, sizeof(ident));
ND_PRINT((ndo," ident=%u", (u_int32_t)ntohl(ident)));
np += sizeof(ident);
}
ext = (struct isakmp_gen *)np;
ND_TCHECK(*ext);
cp = ikev1_sub_print(ndo, ISAKMP_NPTYPE_P, ext, ep, phase, doi, proto0,
depth);
return cp;
trunc:
ND_PRINT((ndo," [|%s]", NPSTR(ISAKMP_NPTYPE_SA)));
return NULL;
}
static const u_char *
ikev1_p_print(netdissect_options *ndo, u_char tpay _U_,
const struct isakmp_gen *ext, u_int item_len _U_,
const u_char *ep, u_int32_t phase, u_int32_t doi0,
u_int32_t proto0 _U_, int depth)
{
const struct ikev1_pl_p *p;
struct ikev1_pl_p prop;
const u_char *cp;
ND_PRINT((ndo,"%s:", NPSTR(ISAKMP_NPTYPE_P)));
p = (struct ikev1_pl_p *)ext;
ND_TCHECK(*p);
safememcpy(&prop, ext, sizeof(prop));
ND_PRINT((ndo," #%d protoid=%s transform=%d",
prop.p_no, PROTOIDSTR(prop.prot_id), prop.num_t));
if (prop.spi_size) {
ND_PRINT((ndo," spi="));
if (!rawprint(ndo, (caddr_t)(p + 1), prop.spi_size))
goto trunc;
}
ext = (struct isakmp_gen *)((u_char *)(p + 1) + prop.spi_size);
ND_TCHECK(*ext);
cp = ikev1_sub_print(ndo, ISAKMP_NPTYPE_T, ext, ep, phase, doi0,
prop.prot_id, depth);
return cp;
trunc:
ND_PRINT((ndo," [|%s]", NPSTR(ISAKMP_NPTYPE_P)));
return NULL;
}
static const char *ikev1_p_map[] = {
NULL, "ike",
};
static const char *ikev2_t_type_map[]={
NULL, "encr", "prf", "integ", "dh", "esn"
};
static const char *ah_p_map[] = {
NULL, "(reserved)", "md5", "sha", "1des",
"sha2-256", "sha2-384", "sha2-512",
};
static const char *prf_p_map[] = {
NULL, "hmac-md5", "hmac-sha", "hmac-tiger",
"aes128_xcbc"
};
static const char *integ_p_map[] = {
NULL, "hmac-md5", "hmac-sha", "dec-mac",
"kpdk-md5", "aes-xcbc"
};
static const char *esn_p_map[] = {
"no-esn", "esn"
};
static const char *dh_p_map[] = {
NULL, "modp768",
"modp1024", /* group 2 */
"EC2N 2^155", /* group 3 */
"EC2N 2^185", /* group 4 */
"modp1536", /* group 5 */
"iana-grp06", "iana-grp07", /* reserved */
"iana-grp08", "iana-grp09",
"iana-grp10", "iana-grp11",
"iana-grp12", "iana-grp13",
"modp2048", /* group 14 */
"modp3072", /* group 15 */
"modp4096", /* group 16 */
"modp6144", /* group 17 */
"modp8192", /* group 18 */
};
static const char *esp_p_map[] = {
NULL, "1des-iv64", "1des", "3des", "rc5", "idea", "cast",
"blowfish", "3idea", "1des-iv32", "rc4", "null", "aes"
};
static const char *ipcomp_p_map[] = {
NULL, "oui", "deflate", "lzs",
};
const struct attrmap ipsec_t_map[] = {
{ NULL, 0, { NULL } },
{ "lifetype", 3, { NULL, "sec", "kb", }, },
{ "life", 0, { NULL } },
{ "group desc", 18, { NULL, "modp768",
"modp1024", /* group 2 */
"EC2N 2^155", /* group 3 */
"EC2N 2^185", /* group 4 */
"modp1536", /* group 5 */
"iana-grp06", "iana-grp07", /* reserved */
"iana-grp08", "iana-grp09",
"iana-grp10", "iana-grp11",
"iana-grp12", "iana-grp13",
"modp2048", /* group 14 */
"modp3072", /* group 15 */
"modp4096", /* group 16 */
"modp6144", /* group 17 */
"modp8192", /* group 18 */
}, },
{ "enc mode", 3, { NULL, "tunnel", "transport", }, },
{ "auth", 5, { NULL, "hmac-md5", "hmac-sha1", "1des-mac", "keyed", }, },
{ "keylen", 0, { NULL } },
{ "rounds", 0, { NULL } },
{ "dictsize", 0, { NULL } },
{ "privalg", 0, { NULL } },
};
const struct attrmap encr_t_map[] = {
{ NULL, 0, { NULL } }, { NULL, 0, { NULL } }, /* 0, 1 */
{ NULL, 0, { NULL } }, { NULL, 0, { NULL } }, /* 2, 3 */
{ NULL, 0, { NULL } }, { NULL, 0, { NULL } }, /* 4, 5 */
{ NULL, 0, { NULL } }, { NULL, 0, { NULL } }, /* 6, 7 */
{ NULL, 0, { NULL } }, { NULL, 0, { NULL } }, /* 8, 9 */
{ NULL, 0, { NULL } }, { NULL, 0, { NULL } }, /* 10,11*/
{ NULL, 0, { NULL } }, { NULL, 0, { NULL } }, /* 12,13*/
{ "keylen", 14, { NULL }},
};
const struct attrmap oakley_t_map[] = {
{ NULL, 0, { NULL } },
{ "enc", 8, { NULL, "1des", "idea", "blowfish", "rc5",
"3des", "cast", "aes", }, },
{ "hash", 7, { NULL, "md5", "sha1", "tiger",
"sha2-256", "sha2-384", "sha2-512", }, },
{ "auth", 6, { NULL, "preshared", "dss", "rsa sig", "rsa enc",
"rsa enc revised", }, },
{ "group desc", 18, { NULL, "modp768",
"modp1024", /* group 2 */
"EC2N 2^155", /* group 3 */
"EC2N 2^185", /* group 4 */
"modp1536", /* group 5 */
"iana-grp06", "iana-grp07", /* reserved */
"iana-grp08", "iana-grp09",
"iana-grp10", "iana-grp11",
"iana-grp12", "iana-grp13",
"modp2048", /* group 14 */
"modp3072", /* group 15 */
"modp4096", /* group 16 */
"modp6144", /* group 17 */
"modp8192", /* group 18 */
}, },
{ "group type", 4, { NULL, "MODP", "ECP", "EC2N", }, },
{ "group prime", 0, { NULL } },
{ "group gen1", 0, { NULL } },
{ "group gen2", 0, { NULL } },
{ "group curve A", 0, { NULL } },
{ "group curve B", 0, { NULL } },
{ "lifetype", 3, { NULL, "sec", "kb", }, },
{ "lifeduration", 0, { NULL } },
{ "prf", 0, { NULL } },
{ "keylen", 0, { NULL } },
{ "field", 0, { NULL } },
{ "order", 0, { NULL } },
};
static const u_char *
ikev1_t_print(netdissect_options *ndo, u_char tpay _U_,
const struct isakmp_gen *ext, u_int item_len,
const u_char *ep, u_int32_t phase _U_, u_int32_t doi _U_,
u_int32_t proto, int depth _U_)
{
const struct ikev1_pl_t *p;
struct ikev1_pl_t t;
const u_char *cp;
const char *idstr;
const struct attrmap *map;
size_t nmap;
const u_char *ep2;
ND_PRINT((ndo,"%s:", NPSTR(ISAKMP_NPTYPE_T)));
p = (struct ikev1_pl_t *)ext;
ND_TCHECK(*p);
safememcpy(&t, ext, sizeof(t));
switch (proto) {
case 1:
idstr = STR_OR_ID(t.t_id, ikev1_p_map);
map = oakley_t_map;
nmap = sizeof(oakley_t_map)/sizeof(oakley_t_map[0]);
break;
case 2:
idstr = STR_OR_ID(t.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(t.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(t.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)
ND_PRINT((ndo," #%d id=%s ", t.t_no, idstr));
else
ND_PRINT((ndo," #%d id=%d ", t.t_no, t.t_id));
cp = (u_char *)(p + 1);
ep2 = (u_char *)p + item_len;
while (cp < ep && cp < ep2) {
if (map && nmap) {
cp = ikev1_attrmap_print(ndo, cp, (ep < ep2) ? ep : ep2,
map, nmap);
} else
cp = ikev1_attr_print(ndo, cp, (ep < ep2) ? ep : ep2);
}
if (ep < ep2)
ND_PRINT((ndo,"..."));
return cp;
trunc:
ND_PRINT((ndo," [|%s]", NPSTR(ISAKMP_NPTYPE_T)));
return NULL;
}
static const u_char *
ikev1_ke_print(netdissect_options *ndo, u_char tpay _U_,
const struct isakmp_gen *ext, u_int item_len _U_,
const u_char *ep _U_, u_int32_t phase _U_, u_int32_t doi _U_,
u_int32_t proto _U_, int depth _U_)
{
struct isakmp_gen e;
ND_PRINT((ndo,"%s:", NPSTR(ISAKMP_NPTYPE_KE)));
ND_TCHECK(*ext);
safememcpy(&e, ext, sizeof(e));
ND_PRINT((ndo," key len=%d", ntohs(e.len) - 4));
if (2 < ndo->ndo_vflag && 4 < ntohs(e.len)) {
ND_PRINT((ndo," "));
if (!rawprint(ndo, (caddr_t)(ext + 1), ntohs(e.len) - 4))
goto trunc;
}
return (u_char *)ext + ntohs(e.len);
trunc:
ND_PRINT((ndo," [|%s]", NPSTR(ISAKMP_NPTYPE_KE)));
return NULL;
}
static const u_char *
ikev1_id_print(netdissect_options *ndo, u_char tpay _U_,
const struct isakmp_gen *ext, u_int item_len _U_,
const u_char *ep _U_, u_int32_t phase, u_int32_t doi _U_,
u_int32_t proto _U_, int depth _U_)
{
#define USE_IPSECDOI_IN_PHASE1 1
const struct ikev1_pl_id *p;
struct ikev1_pl_id id;
static const char *idtypestr[] = {
"IPv4", "IPv4net", "IPv6", "IPv6net",
};
static const char *ipsecidtypestr[] = {
NULL, "IPv4", "FQDN", "user FQDN", "IPv4net", "IPv6",
"IPv6net", "IPv4range", "IPv6range", "ASN1 DN", "ASN1 GN",
"keyid",
};
int len;
const u_char *data;
ND_PRINT((ndo,"%s:", NPSTR(ISAKMP_NPTYPE_ID)));
p = (struct ikev1_pl_id *)ext;
ND_TCHECK(*p);
safememcpy(&id, ext, sizeof(id));
if (sizeof(*p) < item_len) {
data = (u_char *)(p + 1);
len = item_len - sizeof(*p);
} else {
data = NULL;
len = 0;
}
#if 0 /*debug*/
ND_PRINT((ndo," [phase=%d doi=%d proto=%d]", phase, doi, proto));
#endif
switch (phase) {
#ifndef USE_IPSECDOI_IN_PHASE1
case 1:
#endif
default:
ND_PRINT((ndo," idtype=%s", STR_OR_ID(id.d.id_type, idtypestr)));
ND_PRINT((ndo," doi_data=%u",
(u_int32_t)(ntohl(id.d.doi_data) & 0xffffff)));
break;
#ifdef USE_IPSECDOI_IN_PHASE1
case 1:
#endif
case 2:
{
const struct ipsecdoi_id *p;
struct ipsecdoi_id id;
struct protoent *pe;
p = (struct ipsecdoi_id *)ext;
ND_TCHECK(*p);
safememcpy(&id, ext, sizeof(id));
ND_PRINT((ndo," idtype=%s", STR_OR_ID(id.type, ipsecidtypestr)));
if (id.proto_id) {
#ifndef WIN32
setprotoent(1);
#endif /* WIN32 */
pe = getprotobynumber(id.proto_id);
if (pe)
ND_PRINT((ndo," protoid=%s", pe->p_name));
#ifndef WIN32
endprotoent();
#endif /* WIN32 */
} else {
/* it DOES NOT mean IPPROTO_IP! */
ND_PRINT((ndo," protoid=%s", "0"));
}
ND_PRINT((ndo," port=%d", ntohs(id.port)));
if (!len)
break;
if (data == NULL)
goto trunc;
ND_TCHECK2(*data, len);
switch (id.type) {
case IPSECDOI_ID_IPV4_ADDR:
if (len < 4)
ND_PRINT((ndo," len=%d [bad: < 4]", len));
else
ND_PRINT((ndo," len=%d %s", len, ipaddr_string(data)));
len = 0;
break;
case IPSECDOI_ID_FQDN:
case IPSECDOI_ID_USER_FQDN:
{
int i;
ND_PRINT((ndo," len=%d ", len));
for (i = 0; i < len; i++)
safeputchar(data[i]);
len = 0;
break;
}
case IPSECDOI_ID_IPV4_ADDR_SUBNET:
{
const u_char *mask;
if (len < 8)
ND_PRINT((ndo," len=%d [bad: < 8]", len));
else {
mask = data + sizeof(struct in_addr);
ND_PRINT((ndo," 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:
if (len < 16)
ND_PRINT((ndo," len=%d [bad: < 16]", len));
else
ND_PRINT((ndo," len=%d %s", len, ip6addr_string(data)));
len = 0;
break;
case IPSECDOI_ID_IPV6_ADDR_SUBNET:
{
const u_int32_t *mask;
if (len < 20)
ND_PRINT((ndo," len=%d [bad: < 20]", len));
else {
mask = (u_int32_t *)(data + sizeof(struct in6_addr));
/*XXX*/
ND_PRINT((ndo," 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:
if (len < 8)
ND_PRINT((ndo," len=%d [bad: < 8]", len));
else {
ND_PRINT((ndo," len=%d %s-%s", len,
ipaddr_string(data),
ipaddr_string(data + sizeof(struct in_addr))));
}
len = 0;