/* print a query */
static void
ns_qprint(register const u_char *cp, register const u_char *bp)
{
register const u_char *np = cp;
register u_int i;
cp = ns_nskip(cp, bp);
if (cp + 4 > snapend)
return;
/* print the qtype and qclass (if it's not IN) */
i = *cp++ << 8;
i |= *cp++;
printf(" %s", tok2str(type2str, "Type%d", i));
i = *cp++ << 8;
i |= *cp++;
if (i != C_IN)
printf(" %s", tok2str(class2str, "(Class %d)", i));
fputs("? ", stdout);
ns_nprint(np, bp);
}
static void
dhcp6opt_print(netdissect_options *ndo,
const u_char *cp, const u_char *ep)
{
const struct dhcp6opt *dh6o;
const u_char *tp;
u_int i;
uint16_t opttype;
uint16_t optlen;
uint8_t auth_proto;
uint8_t auth_alg;
uint8_t auth_rdm;
u_int authinfolen, authrealmlen;
u_int remain_len; /* Length of remaining options */
u_int label_len; /* Label length */
uint16_t subopt_code;
uint16_t subopt_len;
uint8_t dh6_reconf_type;
uint8_t dh6_lq_query_type;
if (cp == ep)
return;
while (cp < ep) {
if (ep < cp + sizeof(*dh6o))
goto trunc;
dh6o = (const struct dhcp6opt *)cp;
ND_TCHECK_SIZE(dh6o);
optlen = EXTRACT_BE_U_2(dh6o->dh6opt_len);
if (ep < cp + sizeof(*dh6o) + optlen)
goto trunc;
opttype = EXTRACT_BE_U_2(dh6o->dh6opt_type);
ND_PRINT(" (%s", tok2str(dh6opt_str, "opt_%u", opttype));
ND_TCHECK_LEN(cp + sizeof(*dh6o), optlen);
switch (opttype) {
case DH6OPT_CLIENTID:
case DH6OPT_SERVERID:
if (optlen < 2) {
/*(*/
ND_PRINT(" ?)");
break;
}
tp = (const u_char *)(dh6o + 1);
switch (EXTRACT_BE_U_2(tp)) {
case 1:
if (optlen >= 2 + 6) {
ND_PRINT(" hwaddr/time type %u time %u ",
EXTRACT_BE_U_2(tp + 2),
EXTRACT_BE_U_4(tp + 4));
for (i = 8; i < optlen; i++)
ND_PRINT("%02x", EXTRACT_U_1(tp + i));
/*(*/
ND_PRINT(")");
} else {
/*(*/
ND_PRINT(" ?)");
}
break;
case 2:
if (optlen >= 2 + 8) {
ND_PRINT(" vid ");
for (i = 2; i < 2 + 8; i++)
ND_PRINT("%02x", EXTRACT_U_1(tp + i));
/*(*/
ND_PRINT(")");
} else {
/*(*/
ND_PRINT(" ?)");
}
break;
case 3:
if (optlen >= 2 + 2) {
ND_PRINT(" hwaddr type %u ",
EXTRACT_BE_U_2(tp + 2));
for (i = 4; i < optlen; i++)
ND_PRINT("%02x", EXTRACT_U_1(tp + i));
/*(*/
ND_PRINT(")");
} else {
/*(*/
ND_PRINT(" ?)");
}
break;
default:
ND_PRINT(" type %u)", EXTRACT_BE_U_2(tp));
break;
}
break;
case DH6OPT_IA_ADDR:
if (optlen < 24) {
/*(*/
ND_PRINT(" ?)");
break;
}
tp = (const u_char *)(dh6o + 1);
ND_PRINT(" %s", ip6addr_string(ndo, tp));
ND_PRINT(" pltime:%u vltime:%u",
EXTRACT_BE_U_4(tp + 16),
EXTRACT_BE_U_4(tp + 20));
if (optlen > 24) {
/* there are sub-options */
dhcp6opt_print(ndo, tp + 24, tp + optlen);
}
ND_PRINT(")");
break;
case DH6OPT_ORO:
case DH6OPT_ERO:
if (optlen % 2) {
ND_PRINT(" ?)");
break;
}
tp = (const u_char *)(dh6o + 1);
for (i = 0; i < optlen; i += 2) {
ND_PRINT(" %s",
tok2str(dh6opt_str, "opt_%u", EXTRACT_BE_U_2(tp + i)));
}
ND_PRINT(")");
break;
case DH6OPT_PREFERENCE:
if (optlen != 1) {
ND_PRINT(" ?)");
break;
}
tp = (const u_char *)(dh6o + 1);
ND_PRINT(" %u)", EXTRACT_U_1(tp));
break;
case DH6OPT_ELAPSED_TIME:
if (optlen != 2) {
ND_PRINT(" ?)");
break;
}
tp = (const u_char *)(dh6o + 1);
ND_PRINT(" %u)", EXTRACT_BE_U_2(tp));
break;
case DH6OPT_RELAY_MSG:
ND_PRINT(" (");
tp = (const u_char *)(dh6o + 1);
dhcp6_print(ndo, tp, optlen);
ND_PRINT(")");
break;
case DH6OPT_AUTH:
if (optlen < 11) {
ND_PRINT(" ?)");
break;
}
tp = (const u_char *)(dh6o + 1);
auth_proto = EXTRACT_U_1(tp);
switch (auth_proto) {
case DH6OPT_AUTHPROTO_DELAYED:
ND_PRINT(" proto: delayed");
break;
case DH6OPT_AUTHPROTO_RECONFIG:
ND_PRINT(" proto: reconfigure");
break;
default:
ND_PRINT(" proto: %u", auth_proto);
break;
}
tp++;
auth_alg = EXTRACT_U_1(tp);
switch (auth_alg) {
case DH6OPT_AUTHALG_HMACMD5:
/* XXX: may depend on the protocol */
ND_PRINT(", alg: HMAC-MD5");
break;
default:
ND_PRINT(", alg: %u", auth_alg);
break;
}
tp++;
auth_rdm = EXTRACT_U_1(tp);
switch (auth_rdm) {
case DH6OPT_AUTHRDM_MONOCOUNTER:
ND_PRINT(", RDM: mono");
break;
default:
ND_PRINT(", RDM: %u", auth_rdm);
break;
}
tp++;
ND_PRINT(", RD:");
for (i = 0; i < 4; i++, tp += 2)
ND_PRINT(" %04x", EXTRACT_BE_U_2(tp));
/* protocol dependent part */
authinfolen = optlen - 11;
switch (auth_proto) {
case DH6OPT_AUTHPROTO_DELAYED:
if (authinfolen == 0)
break;
if (authinfolen < 20) {
ND_PRINT(" ??");
break;
}
authrealmlen = authinfolen - 20;
if (authrealmlen > 0) {
ND_PRINT(", realm: ");
}
for (i = 0; i < authrealmlen; i++, tp++)
ND_PRINT("%02x", EXTRACT_U_1(tp));
ND_PRINT(", key ID: %08x", EXTRACT_BE_U_4(tp));
tp += 4;
ND_PRINT(", HMAC-MD5:");
for (i = 0; i < 4; i++, tp+= 4)
ND_PRINT(" %08x", EXTRACT_BE_U_4(tp));
break;
case DH6OPT_AUTHPROTO_RECONFIG:
if (authinfolen != 17) {
ND_PRINT(" ??");
break;
}
switch (EXTRACT_U_1(tp)) {
case DH6OPT_AUTHRECONFIG_KEY:
ND_PRINT(" reconfig-key");
break;
case DH6OPT_AUTHRECONFIG_HMACMD5:
ND_PRINT(" type: HMAC-MD5");
break;
default:
ND_PRINT(" type: ??");
break;
}
tp++;
ND_PRINT(" value:");
for (i = 0; i < 4; i++, tp+= 4)
ND_PRINT(" %08x", EXTRACT_BE_U_4(tp));
break;
default:
ND_PRINT(" ??");
break;
}
ND_PRINT(")");
break;
case DH6OPT_RAPID_COMMIT: /* nothing todo */
ND_PRINT(")");
break;
case DH6OPT_INTERFACE_ID:
case DH6OPT_SUBSCRIBER_ID:
/*
* Since we cannot predict the encoding, print hex dump
* at most 10 characters.
*/
tp = (const u_char *)(dh6o + 1);
ND_PRINT(" ");
for (i = 0; i < optlen && i < 10; i++)
ND_PRINT("%02x", EXTRACT_U_1(tp + i));
ND_PRINT("...)");
break;
case DH6OPT_RECONF_MSG:
if (optlen != 1) {
ND_PRINT(" ?)");
break;
}
tp = (const u_char *)(dh6o + 1);
dh6_reconf_type = EXTRACT_U_1(tp);
switch (dh6_reconf_type) {
case DH6_RENEW:
ND_PRINT(" for renew)");
break;
case DH6_INFORM_REQ:
ND_PRINT(" for inf-req)");
break;
default:
ND_PRINT(" for ?\?\?(%02x))", dh6_reconf_type);
break;
}
break;
case DH6OPT_RECONF_ACCEPT: /* nothing todo */
ND_PRINT(")");
break;
case DH6OPT_SIP_SERVER_A:
case DH6OPT_DNS_SERVERS:
case DH6OPT_SNTP_SERVERS:
case DH6OPT_NIS_SERVERS:
case DH6OPT_NISP_SERVERS:
case DH6OPT_BCMCS_SERVER_A:
case DH6OPT_PANA_AGENT:
case DH6OPT_LQ_CLIENT_LINK:
if (optlen % 16) {
ND_PRINT(" ?)");
break;
}
tp = (const u_char *)(dh6o + 1);
for (i = 0; i < optlen; i += 16)
ND_PRINT(" %s", ip6addr_string(ndo, tp + i));
ND_PRINT(")");
break;
case DH6OPT_SIP_SERVER_D:
case DH6OPT_DOMAIN_LIST:
tp = (const u_char *)(dh6o + 1);
while (tp < cp + sizeof(*dh6o) + optlen) {
ND_PRINT(" ");
if ((tp = ns_nprint(ndo, tp, cp + sizeof(*dh6o) + optlen)) == NULL)
goto trunc;
}
ND_PRINT(")");
break;
case DH6OPT_STATUS_CODE:
if (optlen < 2) {
ND_PRINT(" ?)");
break;
}
tp = (const u_char *)(dh6o + 1);
ND_PRINT(" %s)", dhcp6stcode(EXTRACT_BE_U_2(tp)));
break;
case DH6OPT_IA_NA:
case DH6OPT_IA_PD:
if (optlen < 12) {
ND_PRINT(" ?)");
break;
}
tp = (const u_char *)(dh6o + 1);
ND_PRINT(" IAID:%u T1:%u T2:%u",
EXTRACT_BE_U_4(tp),
EXTRACT_BE_U_4(tp + 4),
EXTRACT_BE_U_4(tp + 8));
if (optlen > 12) {
/* there are sub-options */
dhcp6opt_print(ndo, tp + 12, tp + optlen);
}
ND_PRINT(")");
break;
case DH6OPT_IA_TA:
if (optlen < 4) {
ND_PRINT(" ?)");
break;
}
tp = (const u_char *)(dh6o + 1);
ND_PRINT(" IAID:%u", EXTRACT_BE_U_4(tp));
if (optlen > 4) {
/* there are sub-options */
dhcp6opt_print(ndo, tp + 4, tp + optlen);
}
ND_PRINT(")");
break;
case DH6OPT_IA_PD_PREFIX:
if (optlen < 25) {
ND_PRINT(" ?)");
break;
}
tp = (const u_char *)(dh6o + 1);
ND_PRINT(" %s/%u", ip6addr_string(ndo, tp + 9), EXTRACT_U_1(tp + 8));
ND_PRINT(" pltime:%u vltime:%u",
EXTRACT_BE_U_4(tp),
EXTRACT_BE_U_4(tp + 4));
if (optlen > 25) {
/* there are sub-options */
dhcp6opt_print(ndo, tp + 25, tp + optlen);
}
ND_PRINT(")");
break;
case DH6OPT_LIFETIME:
case DH6OPT_CLT_TIME:
if (optlen != 4) {
ND_PRINT(" ?)");
break;
}
tp = (const u_char *)(dh6o + 1);
ND_PRINT(" %u)", EXTRACT_BE_U_4(tp));
break;
case DH6OPT_REMOTE_ID:
if (optlen < 4) {
ND_PRINT(" ?)");
break;
}
tp = (const u_char *)(dh6o + 1);
ND_PRINT(" %u ", EXTRACT_BE_U_4(tp));
/*
* Print hex dump first 10 characters.
*/
for (i = 4; i < optlen && i < 14; i++)
ND_PRINT("%02x", EXTRACT_U_1(tp + i));
ND_PRINT("...)");
break;
case DH6OPT_LQ_QUERY:
if (optlen < 17) {
ND_PRINT(" ?)");
break;
}
tp = (const u_char *)(dh6o + 1);
dh6_lq_query_type = EXTRACT_U_1(tp);
switch (dh6_lq_query_type) {
case 1:
ND_PRINT(" by-address");
break;
case 2:
ND_PRINT(" by-clientID");
break;
default:
ND_PRINT(" type_%u", dh6_lq_query_type);
break;
}
ND_PRINT(" %s", ip6addr_string(ndo, tp + 1));
if (optlen > 17) {
/* there are query-options */
dhcp6opt_print(ndo, tp + 17, tp + optlen);
}
ND_PRINT(")");
break;
case DH6OPT_CLIENT_DATA:
tp = (const u_char *)(dh6o + 1);
if (optlen > 0) {
/* there are encapsulated options */
dhcp6opt_print(ndo, tp, tp + optlen);
}
ND_PRINT(")");
break;
case DH6OPT_LQ_RELAY_DATA:
if (optlen < 16) {
ND_PRINT(" ?)");
break;
}
tp = (const u_char *)(dh6o + 1);
ND_PRINT(" %s ", ip6addr_string(ndo, tp));
/*
* Print hex dump first 10 characters.
*/
for (i = 16; i < optlen && i < 26; i++)
ND_PRINT("%02x", EXTRACT_U_1(tp + i));
ND_PRINT("...)");
break;
case DH6OPT_NTP_SERVER:
if (optlen < 4) {
ND_PRINT(" ?)");
break;
}
tp = (const u_char *)(dh6o + 1);
while (tp < cp + sizeof(*dh6o) + optlen - 4) {
subopt_code = EXTRACT_BE_U_2(tp);
tp += 2;
subopt_len = EXTRACT_BE_U_2(tp);
tp += 2;
if (tp + subopt_len > cp + sizeof(*dh6o) + optlen)
goto trunc;
ND_PRINT(" subopt:%u", subopt_code);
switch (subopt_code) {
case DH6OPT_NTP_SUBOPTION_SRV_ADDR:
case DH6OPT_NTP_SUBOPTION_MC_ADDR:
if (subopt_len != 16) {
ND_PRINT(" ?");
break;
}
ND_PRINT(" %s", ip6addr_string(ndo, tp));
break;
case DH6OPT_NTP_SUBOPTION_SRV_FQDN:
ND_PRINT(" ");
if (ns_nprint(ndo, tp, tp + subopt_len) == NULL)
goto trunc;
break;
default:
ND_PRINT(" ?");
break;
}
tp += subopt_len;
}
ND_PRINT(")");
break;
case DH6OPT_AFTR_NAME:
if (optlen < 3) {
ND_PRINT(" ?)");
break;
}
tp = (const u_char *)(dh6o + 1);
remain_len = optlen;
ND_PRINT(" ");
/* Encoding is described in section 3.1 of RFC 1035 */
while (remain_len && EXTRACT_U_1(tp)) {
label_len = EXTRACT_U_1(tp);
tp++;
if (label_len < remain_len - 1) {
(void)fn_printn(ndo, tp, label_len, NULL);
tp += label_len;
remain_len -= (label_len + 1);
if(EXTRACT_U_1(tp)) ND_PRINT(".");
} else {
ND_PRINT(" ?");
break;
}
}
ND_PRINT(")");
break;
case DH6OPT_NEW_POSIX_TIMEZONE: /* all three of these options */
case DH6OPT_NEW_TZDB_TIMEZONE: /* are encoded similarly */
case DH6OPT_MUDURL: /* although GMT might not work */
if (optlen < 5) {
ND_PRINT(" ?)");
break;
}
tp = (const u_char *)(dh6o + 1);
ND_PRINT("=");
(void)fn_printn(ndo, tp, (u_int)optlen, NULL);
ND_PRINT(")");
break;
default:
ND_PRINT(")");
break;
}
cp += sizeof(*dh6o) + optlen;
}
return;
trunc:
ND_PRINT("[|dhcp6ext]");
}
void
ns_print(register const u_char *bp, u_int length)
{
register const HEADER *np;
register int qdcount, ancount, nscount, arcount;
register const u_char *cp;
np = (const HEADER *)bp;
/* get the byte-order right */
qdcount = ntohs(np->qdcount);
ancount = ntohs(np->ancount);
nscount = ntohs(np->nscount);
arcount = ntohs(np->arcount);
if (np->qr) {
/* this is a response */
printf(" %d%s%s%s%s%s",
ntohs(np->id),
ns_ops[np->opcode],
ns_resp[np->rcode],
np->aa? "*" : "",
np->ra? "" : "-",
np->tc? "|" : "");
if (qdcount != 1)
printf(" [%dq]", qdcount);
/* Print QUESTION section on -vv */
if (vflag > 1) {
fputs(" q: ", stdout);
cp = ns_nprint((const u_char *)(np + 1), bp);
} else
cp = ns_nskip((const u_char *)(np + 1), bp);
printf(" %d/%d/%d", ancount, nscount, arcount);
if (ancount--) {
cp = ns_rprint(cp + 4, bp);
while (ancount-- && cp < snapend) {
putchar(',');
cp = ns_rprint(cp, bp);
}
}
}
else {
/* this is a request */
printf(" %d%s%s",
ntohs(np->id),
ns_ops[np->opcode],
np->rd? "+" : "");
/* any weirdness? */
if (*(((u_short *)np)+1) & htons(0x6ff))
printf(" [b2&3=0x%x]", ntohs(*(((u_short *)np)+1)));
if (np->opcode == IQUERY) {
if (qdcount)
printf(" [%dq]", qdcount);
if (ancount != 1)
printf(" [%da]", ancount);
}
else {
if (ancount)
printf(" [%da]", ancount);
if (qdcount != 1)
printf(" [%dq]", qdcount);
}
if (nscount)
printf(" [%dn]", nscount);
if (arcount)
printf(" [%dau]", arcount);
ns_qprint((const u_char *)(np + 1), (const u_char *)np);
}
printf(" (%d)", length);
}
/* print a reply */
static const u_char *
ns_rprint(register const u_char *cp, register const u_char *bp)
{
register u_int i;
register u_short typ, len;
register const u_char *rp;
if (vflag) {
putchar(' ');
cp = ns_nprint(cp, bp);
} else
cp = ns_nskip(cp, bp);
if (cp + 10 > snapend)
return (snapend);
/* print the type/qtype and class (if it's not IN) */
typ = *cp++ << 8;
typ |= *cp++;
i = *cp++ << 8;
i |= *cp++;
if (i != C_IN)
printf(" %s", tok2str(class2str, "(Class %d)", i));
/* ignore ttl */
cp += 4;
len = *cp++ << 8;
len |= *cp++;
rp = cp + len;
printf(" %s", tok2str(type2str, "Type%d", typ));
switch (typ) {
case T_A:
printf(" %s", ipaddr_string(cp));
break;
case T_NS:
case T_CNAME:
case T_PTR:
putchar(' ');
(void)ns_nprint(cp, bp);
break;
case T_MX:
putchar(' ');
(void)ns_nprint(cp + 2, bp);
printf(" %d", EXTRACT_16BITS(cp));
break;
case T_TXT:
putchar(' ');
(void)ns_cprint(cp, bp);
break;
case T_UNSPECA: /* One long string */
printf(" %.*s", len, cp);
break;
}
return (rp); /* XXX This isn't always right */
}
static void
dhcp6opt_print(const u_char *cp, const u_char *ep)
{
const struct dhcp6opt *dh6o;
const u_char *tp;
size_t i;
u_int16_t opttype;
size_t optlen;
u_int8_t auth_proto;
u_int authinfolen, authrealmlen;
int remain_len; /* Length of remaining options */
int label_len; /* Label length */
u_int16_t subopt_code;
u_int16_t subopt_len;
if (cp == ep)
return;
while (cp < ep) {
if (ep < cp + sizeof(*dh6o))
goto trunc;
dh6o = (struct dhcp6opt *)cp;
TCHECK(*dh6o);
optlen = EXTRACT_16BITS(&dh6o->dh6opt_len);
if (ep < cp + sizeof(*dh6o) + optlen)
goto trunc;
opttype = EXTRACT_16BITS(&dh6o->dh6opt_type);
printf(" (%s", dhcp6opt_name(opttype));
switch (opttype) {
case DH6OPT_CLIENTID:
case DH6OPT_SERVERID:
if (optlen < 2) {
/*(*/
printf(" ?)");
break;
}
tp = (u_char *)(dh6o + 1);
switch (EXTRACT_16BITS(tp)) {
case 1:
if (optlen >= 2 + 6) {
printf(" hwaddr/time type %u time %u ",
EXTRACT_16BITS(&tp[2]),
EXTRACT_32BITS(&tp[4]));
for (i = 8; i < optlen; i++)
printf("%02x", tp[i]);
/*(*/
printf(")");
} else {
/*(*/
printf(" ?)");
}
break;
case 2:
if (optlen >= 2 + 8) {
printf(" vid ");
for (i = 2; i < 2 + 8; i++)
printf("%02x", tp[i]);
/*(*/
printf(")");
} else {
/*(*/
printf(" ?)");
}
break;
case 3:
if (optlen >= 2 + 2) {
printf(" hwaddr type %u ",
EXTRACT_16BITS(&tp[2]));
for (i = 4; i < optlen; i++)
printf("%02x", tp[i]);
/*(*/
printf(")");
} else {
/*(*/
printf(" ?)");
}
break;
default:
printf(" type %d)", EXTRACT_16BITS(tp));
break;
}
break;
case DH6OPT_IA_ADDR:
if (optlen < 24) {
/*(*/
printf(" ?)");
break;
}
tp = (u_char *)(dh6o + 1);
printf(" %s", ip6addr_string(&tp[0]));
printf(" pltime:%u vltime:%u",
EXTRACT_32BITS(&tp[16]),
EXTRACT_32BITS(&tp[20]));
if (optlen > 24) {
/* there are sub-options */
dhcp6opt_print(tp + 24, tp + optlen);
}
printf(")");
break;
case DH6OPT_ORO:
case DH6OPT_ERO:
if (optlen % 2) {
printf(" ?)");
break;
}
tp = (u_char *)(dh6o + 1);
for (i = 0; i < optlen; i += 2) {
printf(" %s",
dhcp6opt_name(EXTRACT_16BITS(&tp[i])));
}
printf(")");
break;
case DH6OPT_PREFERENCE:
if (optlen != 1) {
printf(" ?)");
break;
}
tp = (u_char *)(dh6o + 1);
printf(" %d)", *tp);
break;
case DH6OPT_ELAPSED_TIME:
if (optlen != 2) {
printf(" ?)");
break;
}
tp = (u_char *)(dh6o + 1);
printf(" %d)", EXTRACT_16BITS(tp));
break;
case DH6OPT_RELAY_MSG:
printf(" (");
tp = (u_char *)(dh6o + 1);
dhcp6_print(tp, optlen);
printf(")");
break;
case DH6OPT_AUTH:
if (optlen < 11) {
printf(" ?)");
break;
}
tp = (u_char *)(dh6o + 1);
auth_proto = *tp;
switch (auth_proto) {
case DH6OPT_AUTHPROTO_DELAYED:
printf(" proto: delayed");
break;
case DH6OPT_AUTHPROTO_RECONFIG:
printf(" proto: reconfigure");
break;
default:
printf(" proto: %d", auth_proto);
break;
}
tp++;
switch (*tp) {
case DH6OPT_AUTHALG_HMACMD5:
/* XXX: may depend on the protocol */
printf(", alg: HMAC-MD5");
break;
default:
printf(", alg: %d", *tp);
break;
}
tp++;
switch (*tp) {
case DH6OPT_AUTHRDM_MONOCOUNTER:
printf(", RDM: mono");
break;
default:
printf(", RDM: %d", *tp);
break;
}
tp++;
printf(", RD:");
for (i = 0; i < 4; i++, tp += 2)
printf(" %04x", EXTRACT_16BITS(tp));
/* protocol dependent part */
authinfolen = optlen - 11;
switch (auth_proto) {
case DH6OPT_AUTHPROTO_DELAYED:
if (authinfolen == 0)
break;
if (authinfolen < 20) {
printf(" ??");
break;
}
authrealmlen = authinfolen - 20;
if (authrealmlen > 0) {
printf(", realm: ");
}
for (i = 0; i < authrealmlen; i++, tp++)
printf("%02x", *tp);
printf(", key ID: %08x", EXTRACT_32BITS(tp));
tp += 4;
printf(", HMAC-MD5:");
for (i = 0; i < 4; i++, tp+= 4)
printf(" %08x", EXTRACT_32BITS(tp));
break;
case DH6OPT_AUTHPROTO_RECONFIG:
if (authinfolen != 17) {
printf(" ??");
break;
}
switch (*tp++) {
case DH6OPT_AUTHRECONFIG_KEY:
printf(" reconfig-key");
break;
case DH6OPT_AUTHRECONFIG_HMACMD5:
printf(" type: HMAC-MD5");
break;
default:
printf(" type: ??");
break;
}
printf(" value:");
for (i = 0; i < 4; i++, tp+= 4)
printf(" %08x", EXTRACT_32BITS(tp));
break;
default:
printf(" ??");
break;
}
printf(")");
break;
case DH6OPT_RAPID_COMMIT: /* nothing todo */
printf(")");
break;
case DH6OPT_INTERFACE_ID:
case DH6OPT_SUBSCRIBER_ID:
/*
* Since we cannot predict the encoding, print hex dump
* at most 10 characters.
*/
tp = (u_char *)(dh6o + 1);
printf(" ");
for (i = 0; i < optlen && i < 10; i++)
printf("%02x", tp[i]);
printf("...)");
break;
case DH6OPT_RECONF_MSG:
tp = (u_char *)(dh6o + 1);
switch (*tp) {
case DH6_RENEW:
printf(" for renew)");
break;
case DH6_INFORM_REQ:
printf(" for inf-req)");
break;
default:
printf(" for ?\?\?(%02x))", *tp);
break;
}
break;
case DH6OPT_RECONF_ACCEPT: /* nothing todo */
printf(")");
break;
case DH6OPT_SIP_SERVER_A:
case DH6OPT_DNS_SERVERS:
case DH6OPT_SNTP_SERVERS:
case DH6OPT_NIS_SERVERS:
case DH6OPT_NISP_SERVERS:
case DH6OPT_BCMCS_SERVER_A:
case DH6OPT_PANA_AGENT:
case DH6OPT_LQ_CLIENT_LINK:
if (optlen % 16) {
printf(" ?)");
break;
}
tp = (u_char *)(dh6o + 1);
for (i = 0; i < optlen; i += 16)
printf(" %s", ip6addr_string(&tp[i]));
printf(")");
break;
case DH6OPT_SIP_SERVER_D:
case DH6OPT_DOMAIN_LIST:
tp = (u_char *)(dh6o + 1);
while (tp < cp + sizeof(*dh6o) + optlen) {
putchar(' ');
if ((tp = ns_nprint(tp, cp + sizeof(*dh6o) + optlen)) == NULL)
goto trunc;
}
printf(")");
break;
case DH6OPT_STATUS_CODE:
if (optlen < 2) {
printf(" ?)");
break;
}
tp = (u_char *)(dh6o + 1);
printf(" %s)", dhcp6stcode(EXTRACT_16BITS(&tp[0])));
break;
case DH6OPT_IA_NA:
case DH6OPT_IA_PD:
if (optlen < 12) {
printf(" ?)");
break;
}
tp = (u_char *)(dh6o + 1);
printf(" IAID:%u T1:%u T2:%u",
EXTRACT_32BITS(&tp[0]),
EXTRACT_32BITS(&tp[4]),
EXTRACT_32BITS(&tp[8]));
if (optlen > 12) {
/* there are sub-options */
dhcp6opt_print(tp + 12, tp + optlen);
}
printf(")");
break;
case DH6OPT_IA_TA:
if (optlen < 4) {
printf(" ?)");
break;
}
tp = (u_char *)(dh6o + 1);
printf(" IAID:%u", EXTRACT_32BITS(tp));
if (optlen > 4) {
/* there are sub-options */
dhcp6opt_print(tp + 4, tp + optlen);
}
printf(")");
break;
case DH6OPT_IA_PD_PREFIX:
if (optlen < 25) {
printf(" ?)");
break;
}
tp = (u_char *)(dh6o + 1);
printf(" %s/%d", ip6addr_string(&tp[9]), tp[8]);
printf(" pltime:%u vltime:%u",
EXTRACT_32BITS(&tp[0]),
EXTRACT_32BITS(&tp[4]));
if (optlen > 25) {
/* there are sub-options */
dhcp6opt_print(tp + 25, tp + optlen);
}
printf(")");
break;
case DH6OPT_LIFETIME:
case DH6OPT_CLT_TIME:
if (optlen != 4) {
printf(" ?)");
break;
}
tp = (u_char *)(dh6o + 1);
printf(" %d)", EXTRACT_32BITS(tp));
break;
case DH6OPT_REMOTE_ID:
if (optlen < 4) {
printf(" ?)");
break;
}
tp = (u_char *)(dh6o + 1);
printf(" %d ", EXTRACT_32BITS(tp));
/*
* Print hex dump first 10 characters.
*/
for (i = 4; i < optlen && i < 14; i++)
printf("%02x", tp[i]);
printf("...)");
break;
case DH6OPT_LQ_QUERY:
if (optlen < 17) {
printf(" ?)");
break;
}
tp = (u_char *)(dh6o + 1);
switch (*tp) {
case 1:
printf(" by-address");
break;
case 2:
printf(" by-clientID");
break;
default:
printf(" type_%d", (int)*tp);
break;
}
printf(" %s", ip6addr_string(&tp[1]));
if (optlen > 17) {
/* there are query-options */
dhcp6opt_print(tp + 17, tp + optlen);
}
printf(")");
break;
case DH6OPT_CLIENT_DATA:
tp = (u_char *)(dh6o + 1);
if (optlen > 0) {
/* there are encapsulated options */
dhcp6opt_print(tp, tp + optlen);
}
printf(")");
break;
case DH6OPT_LQ_RELAY_DATA:
if (optlen < 16) {
printf(" ?)");
break;
}
tp = (u_char *)(dh6o + 1);
printf(" %s ", ip6addr_string(&tp[0]));
/*
* Print hex dump first 10 characters.
*/
for (i = 16; i < optlen && i < 26; i++)
printf("%02x", tp[i]);
printf("...)");
break;
case DH6OPT_NTP_SERVER:
if (optlen < 4) {
printf(" ?)");
break;
}
tp = (u_char *)(dh6o + 1);
while (tp < cp + sizeof(*dh6o) + optlen - 4) {
subopt_code = EXTRACT_16BITS(tp);
tp += 2;
subopt_len = EXTRACT_16BITS(tp);
tp += 2;
if (tp + subopt_len > cp + sizeof(*dh6o) + optlen)
goto trunc;
printf(" subopt:%d", subopt_code);
switch (subopt_code) {
case DH6OPT_NTP_SUBOPTION_SRV_ADDR:
case DH6OPT_NTP_SUBOPTION_MC_ADDR:
if (subopt_len != 16) {
printf(" ?");
break;
}
printf(" %s", ip6addr_string(&tp[0]));
break;
case DH6OPT_NTP_SUBOPTION_SRV_FQDN:
putchar(' ');
if (ns_nprint(tp, tp + subopt_len) == NULL)
goto trunc;
break;
default:
printf(" ?");
break;
}
tp += subopt_len;
}
printf(")");
break;
case DH6OPT_AFTR_NAME:
if (optlen < 3) {
printf(" ?)");
break;
}
tp = (u_char *)(dh6o + 1);
remain_len = optlen;
printf(" ");
/* Encoding is described in section 3.1 of RFC 1035 */
while (remain_len && *tp) {
label_len = *tp++;
if (label_len < remain_len - 1) {
printf("%.*s", label_len, tp);
tp += label_len;
remain_len -= (label_len + 1);
if(*tp) printf(".");
} else {
printf(" ?");
break;
}
}
printf(")");
break;
default:
printf(")");
break;
}
cp += sizeof(*dh6o) + optlen;
}
return;
trunc:
printf("[|dhcp6ext]");
}
