343 lines
8.4 KiB
C
343 lines
8.4 KiB
C
|
/*
|
||
|
|
* Copyright (C) 1998 and 1999 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-dhcp6.c,v 1.3 1999/12/22 06:27:20 itojun Exp $";
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifdef HAVE_CONFIG_H
|
||
|
|
#include "config.h"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#include <sys/param.h>
|
||
|
|
#include <sys/time.h>
|
||
|
|
#include <sys/socket.h>
|
||
|
|
|
||
|
|
#if __STDC__
|
||
|
|
struct mbuf;
|
||
|
|
struct rtentry;
|
||
|
|
#endif
|
||
|
|
#include <net/if.h>
|
||
|
|
|
||
|
|
#include <netinet/in.h>
|
||
|
|
|
||
|
|
#include <ctype.h>
|
||
|
|
#ifdef HAVE_MEMORY_H
|
||
|
|
#include <memory.h>
|
||
|
|
#endif
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <string.h>
|
||
|
|
#include <arpa/inet.h>
|
||
|
|
|
||
|
|
#include "interface.h"
|
||
|
|
#include "addrtoname.h"
|
||
|
|
#include "dhcp6.h"
|
||
|
|
#include "dhcp6opt.h"
|
||
|
|
|
||
|
|
#if 0
|
||
|
|
static void dhcp6opttab_init __P((void));
|
||
|
|
static struct dhcp6_opt *dhcp6opttab_byname __P((char *));
|
||
|
|
#endif
|
||
|
|
static struct dhcp6_opt *dhcp6opttab_bycode __P((u_int));
|
||
|
|
|
||
|
|
static char tstr[] = " [|dhcp6]";
|
||
|
|
|
||
|
|
static struct dhcp6_opt dh6opttab[] = {
|
||
|
|
/* IP Address Extension */
|
||
|
|
{ 1, OL6_N, "IP Address", OT6_NONE, },
|
||
|
|
|
||
|
|
/* General Extension */
|
||
|
|
{ 2, 4, "Time Offset", OT6_NUM, },
|
||
|
|
{ 3, OL6_N, "IEEE 1003.1 POSIX Timezone", OT6_STR, },
|
||
|
|
{ 6, OL6_16N, "Domain Name Server", OT6_V6, },
|
||
|
|
{ 10, OL6_N, "Domain Name", OT6_STR, },
|
||
|
|
|
||
|
|
/* Application and Service Parameters */
|
||
|
|
{ 16, OL6_N, "Directory Agent", OT6_NONE, },
|
||
|
|
{ 17, OL6_N, "Service Scope" , OT6_NONE, },
|
||
|
|
{ 18, OL6_16N, "Network Time Protocol Servers", OT6_V6, },
|
||
|
|
{ 19, OL6_N, "NIS Domain", OT6_STR, },
|
||
|
|
{ 20, OL6_16N, "NIS Servers", OT6_V6, },
|
||
|
|
{ 21, OL6_N, "NIS+ Domain", OT6_STR, },
|
||
|
|
{ 22, OL6_16N, "NIS+ Servers", OT6_V6, },
|
||
|
|
|
||
|
|
/* TCP Parameters */
|
||
|
|
{ 32, 4, "TCP Keepalive Interval", OT6_NUM, },
|
||
|
|
|
||
|
|
/* DHCPv6 Extensions */
|
||
|
|
{ 40, 4, "Maximum DHCPv6 Message Size", OT6_NUM, },
|
||
|
|
{ 41, OL6_N, "DHCP Retransmission and Configuration Parameter",
|
||
|
|
OT6_NONE, },
|
||
|
|
{ 48, OL6_N, "Platform Specific Information", OT6_NONE, },
|
||
|
|
{ 49, OL6_N, "Platform Class Identifier", OT6_STR, },
|
||
|
|
{ 64, OL6_N, "Class Identifier", OT6_STR, },
|
||
|
|
{ 66, 16, "Reconfigure Multicast Address", OT6_V6, },
|
||
|
|
{ 67, 16, "Renumber DHCPv6 Server Address",
|
||
|
|
OT6_V6, },
|
||
|
|
{ 68, OL6_N, "DHCP Relay ICMP Error Message", OT6_NONE, },
|
||
|
|
{ 84, OL6_N, "Client-Server Authentication", OT6_NONE, },
|
||
|
|
{ 85, 4, "Client Key Selection", OT6_NUM, },
|
||
|
|
|
||
|
|
/* End Extension */
|
||
|
|
{ 65536, OL6_Z, "End", OT6_NONE, },
|
||
|
|
|
||
|
|
{ 0 },
|
||
|
|
};
|
||
|
|
|
||
|
|
#if 0
|
||
|
|
static struct dhcp6_opt *dh6o_pad;
|
||
|
|
static struct dhcp6_opt *dh6o_end;
|
||
|
|
|
||
|
|
static void
|
||
|
|
dhcp6opttab_init()
|
||
|
|
{
|
||
|
|
dh6o_pad = dhcp6opttab_bycode(0);
|
||
|
|
dh6o_end = dhcp6opttab_bycode(65536);
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#if 0
|
||
|
|
static struct dhcp6_opt *
|
||
|
|
dhcp6opttab_byname(name)
|
||
|
|
char *name;
|
||
|
|
{
|
||
|
|
struct dhcp6_opt *p;
|
||
|
|
|
||
|
|
for (p = dh6opttab; p->code; p++)
|
||
|
|
if (strcmp(name, p->name) == 0)
|
||
|
|
return p;
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
static struct dhcp6_opt *
|
||
|
|
dhcp6opttab_bycode(code)
|
||
|
|
u_int code;
|
||
|
|
{
|
||
|
|
struct dhcp6_opt *p;
|
||
|
|
|
||
|
|
for (p = dh6opttab; p->code; p++)
|
||
|
|
if (p->code == code)
|
||
|
|
return p;
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void
|
||
|
|
dhcp6ext_print(u_char *cp, u_char *ep)
|
||
|
|
{
|
||
|
|
u_int16_t code, len;
|
||
|
|
struct dhcp6_opt *p;
|
||
|
|
char buf[BUFSIZ];
|
||
|
|
int i;
|
||
|
|
|
||
|
|
if (cp == ep)
|
||
|
|
return;
|
||
|
|
printf(" ");
|
||
|
|
while (cp < ep) {
|
||
|
|
code = ntohs(*(u_int16_t *)&cp[0]);
|
||
|
|
if (code != 65535)
|
||
|
|
len = ntohs(*(u_int16_t *)&cp[2]);
|
||
|
|
else
|
||
|
|
len = 0;
|
||
|
|
p = dhcp6opttab_bycode(code);
|
||
|
|
if (p == NULL) {
|
||
|
|
printf("(unknown, len=%d)", len);
|
||
|
|
cp += len + 4;
|
||
|
|
continue;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* sanity check on length */
|
||
|
|
switch (p->len) {
|
||
|
|
case OL6_N:
|
||
|
|
break;
|
||
|
|
case OL6_16N:
|
||
|
|
if (len % 16 != 0)
|
||
|
|
goto trunc;
|
||
|
|
break;
|
||
|
|
case OL6_Z:
|
||
|
|
if (len != 0)
|
||
|
|
goto trunc;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
if (len != p->len)
|
||
|
|
goto trunc;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
if (cp + 4 + len > ep) {
|
||
|
|
printf("[|%s]", p->name);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
printf("(%s, ", p->name);
|
||
|
|
switch (p->type) {
|
||
|
|
case OT6_V6:
|
||
|
|
for (i = 0; i < len; i += 16) {
|
||
|
|
inet_ntop(AF_INET6, &cp[4 + i], buf,
|
||
|
|
sizeof(buf));
|
||
|
|
if (i != 0)
|
||
|
|
printf(",");
|
||
|
|
printf("%s", buf);
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case OT6_STR:
|
||
|
|
memset(&buf, 0, sizeof(buf));
|
||
|
|
strncpy(buf, &cp[4], len);
|
||
|
|
printf("%s", buf);
|
||
|
|
break;
|
||
|
|
case OT6_NUM:
|
||
|
|
printf("%d", (u_int32_t)ntohl(*(u_int32_t *)&cp[4]));
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
for (i = 0; i < len; i++)
|
||
|
|
printf("%02x", cp[4 + i] & 0xff);
|
||
|
|
}
|
||
|
|
printf(")");
|
||
|
|
cp += len + 4;
|
||
|
|
}
|
||
|
|
return;
|
||
|
|
|
||
|
|
trunc:
|
||
|
|
printf("[|dhcp6ext]");
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Print dhcp6 requests
|
||
|
|
*/
|
||
|
|
void
|
||
|
|
dhcp6_print(register const u_char *cp, u_int length,
|
||
|
|
u_short sport, u_short dport)
|
||
|
|
{
|
||
|
|
union dhcp6 *dh6;
|
||
|
|
u_char *ep;
|
||
|
|
u_char *extp;
|
||
|
|
|
||
|
|
printf("dhcp6");
|
||
|
|
|
||
|
|
ep = (u_char *)snapend;
|
||
|
|
|
||
|
|
dh6 = (union dhcp6 *)cp;
|
||
|
|
TCHECK(dh6->dh6_msgtype);
|
||
|
|
switch (dh6->dh6_msgtype) {
|
||
|
|
case DH6_SOLICIT:
|
||
|
|
if (vflag && TTEST(dh6->dh6_sol.dh6sol_relayaddr)) {
|
||
|
|
printf(" solicit(");
|
||
|
|
if ((dh6->dh6_sol.dh6sol_flags & DH6SOL_CLOSE) != 0)
|
||
|
|
printf("C");
|
||
|
|
if (dh6->dh6_sol.dh6sol_flags != 0)
|
||
|
|
printf(" ");
|
||
|
|
printf("cliaddr=%s",
|
||
|
|
ip6addr_string(&dh6->dh6_sol.dh6sol_cliaddr));
|
||
|
|
printf(" relayaddr=%s",
|
||
|
|
ip6addr_string(&dh6->dh6_sol.dh6sol_relayaddr));
|
||
|
|
printf(")");
|
||
|
|
} else
|
||
|
|
printf(" solicit");
|
||
|
|
break;
|
||
|
|
case DH6_ADVERT:
|
||
|
|
if (!(vflag && TTEST(dh6->dh6_adv.dh6adv_serveraddr))) {
|
||
|
|
printf(" advert");
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
printf(" advert(");
|
||
|
|
if ((dh6->dh6_adv.dh6adv_flags & DH6ADV_SERVPRESENT) != 0)
|
||
|
|
printf("S");
|
||
|
|
if (dh6->dh6_adv.dh6adv_flags != 0)
|
||
|
|
printf(" ");
|
||
|
|
printf("pref=%u", dh6->dh6_adv.dh6adv_pref);
|
||
|
|
printf(" cliaddr=%s",
|
||
|
|
ip6addr_string(&dh6->dh6_adv.dh6adv_cliaddr));
|
||
|
|
printf(" relayaddr=%s",
|
||
|
|
ip6addr_string(&dh6->dh6_adv.dh6adv_relayaddr));
|
||
|
|
printf(" servaddr=%s",
|
||
|
|
ip6addr_string(&dh6->dh6_adv.dh6adv_serveraddr));
|
||
|
|
extp = (u_char *)((&dh6->dh6_adv) + 1);
|
||
|
|
dhcp6ext_print(extp, ep);
|
||
|
|
printf(")");
|
||
|
|
break;
|
||
|
|
case DH6_REQUEST:
|
||
|
|
if (!(vflag && TTEST(dh6->dh6_req.dh6req_relayaddr))) {
|
||
|
|
printf(" request");
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
printf(" request(");
|
||
|
|
if ((dh6->dh6_req.dh6req_flags & DH6REQ_CLOSE) != 0)
|
||
|
|
printf("C");
|
||
|
|
if ((dh6->dh6_req.dh6req_flags & DH6REQ_SERVPRESENT) != 0)
|
||
|
|
printf("S");
|
||
|
|
if ((dh6->dh6_req.dh6req_flags & DH6REQ_REBOOT) != 0)
|
||
|
|
printf("R");
|
||
|
|
if (dh6->dh6_req.dh6req_flags != 0)
|
||
|
|
printf(" ");
|
||
|
|
printf("xid=0x%04x", dh6->dh6_req.dh6req_xid);
|
||
|
|
printf(" cliaddr=%s",
|
||
|
|
ip6addr_string(&dh6->dh6_req.dh6req_cliaddr));
|
||
|
|
printf(" relayaddr=%s",
|
||
|
|
ip6addr_string(&dh6->dh6_req.dh6req_relayaddr));
|
||
|
|
extp = (char *)((&dh6->dh6_req) + 1);
|
||
|
|
if ((dh6->dh6_req.dh6req_flags & DH6REQ_SERVPRESENT) != 0) {
|
||
|
|
printf(" servaddr=%s", ip6addr_string(extp));
|
||
|
|
extp += 16;
|
||
|
|
}
|
||
|
|
dhcp6ext_print(extp, ep);
|
||
|
|
printf(")");
|
||
|
|
break;
|
||
|
|
case DH6_REPLY:
|
||
|
|
if (!(vflag && TTEST(dh6->dh6_rep.dh6rep_xid))) {
|
||
|
|
printf(" reply");
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
printf(" reply(");
|
||
|
|
if ((dh6->dh6_rep.dh6rep_flagandstat & DH6REP_CLIPRESENT) != 0)
|
||
|
|
printf("C");
|
||
|
|
if (dh6->dh6_rep.dh6rep_flagandstat != 0)
|
||
|
|
printf(" ");
|
||
|
|
printf("stat=0x%02x",
|
||
|
|
dh6->dh6_rep.dh6rep_flagandstat & DH6REP_STATMASK);
|
||
|
|
extp = (u_char *)((&dh6->dh6_rep) + 1);
|
||
|
|
if ((dh6->dh6_rep.dh6rep_flagandstat & DH6REP_CLIPRESENT) != 0) {
|
||
|
|
printf(" cliaddr=%s", ip6addr_string(extp));
|
||
|
|
extp += 16;
|
||
|
|
}
|
||
|
|
dhcp6ext_print(extp, ep);
|
||
|
|
printf(")");
|
||
|
|
break;
|
||
|
|
case DH6_RELEASE:
|
||
|
|
printf(" release");
|
||
|
|
break;
|
||
|
|
case DH6_RECONFIG:
|
||
|
|
printf(" reconfig");
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
return;
|
||
|
|
|
||
|
|
trunc:
|
||
|
|
printf("%s", tstr);
|
||
|
|
}
|