static void icmp6_nodeinfo_print(netdissect_options *ndo, u_int, const u_char *, const u_char *);
static void icmp6_rrenum_print(netdissect_options *ndo, const u_char *, const u_char *);
-#ifndef abs
-#define abs(a) ((0 < (a)) ? (a) : -(a))
-#endif
-
/*
* DIO: Updated to RFC6550, as published in 2012: section 6. (page 30)
*/
{ 0, NULL }
};
-
static const struct tok icmp6_opt_values[] = {
{ ND_OPT_SOURCE_LINKADDR, "source link-address"},
{ ND_OPT_TARGET_LINKADDR, "destination link-address"},
while (length != 0) {
opt = (const struct rpl_genoption *)opts;
- ND_TCHECK_1(opt->rpl_dio_type);
dio_type = GET_U_1(opt->rpl_dio_type);
if (dio_type == RPL_OPT_PAD1) {
optlen = 1;
return;
trunc:
nd_print_trunc(ndo);
- return;
}
static void
const u_char *bp, u_int length)
{
const struct nd_rpl_dio *dio = (const struct nd_rpl_dio *)bp;
- const char *dagid_str;
-
- ND_TCHECK_SIZE(dio);
- dagid_str = ip6addr_string (ndo, dio->rpl_dagid);
+ ND_ICHECK_ZU(length, <, sizeof(struct nd_rpl_dio));
ND_PRINT(" [dagid:%s,seq:%u,instance:%u,rank:%u,%smop:%s,prf:%u]",
- dagid_str,
+ GET_IP6ADDR_STRING(dio->rpl_dagid),
GET_U_1(dio->rpl_dtsn),
GET_U_1(dio->rpl_instanceid),
GET_BE_U_2(dio->rpl_dagrank),
RPL_DIO_GROUNDED(GET_U_1(dio->rpl_mopprf)) ? "grounded,":"",
- tok2str(rpl_mop_values, "mop%u", RPL_DIO_MOP(GET_U_1(dio->rpl_mopprf))),
+ tok2str(rpl_mop_values, "mop%u",
+ RPL_DIO_MOP(GET_U_1(dio->rpl_mopprf))),
RPL_DIO_PRF(GET_U_1(dio->rpl_mopprf)));
if(ndo->ndo_vflag > 1) {
rpl_printopts(ndo, bp + sizeof(struct nd_rpl_dio),
length - sizeof(struct nd_rpl_dio));
}
- return;
-trunc:
- nd_print_trunc(ndo);
- return;
+ return;
+invalid:
+ nd_print_invalid(ndo);
}
static void
const char *dagid_str = "<elided>";
uint8_t rpl_flags;
- ND_TCHECK_SIZE(dao);
- if (length < ND_RPL_DAO_MIN_LEN)
- goto tooshort;
+ ND_ICHECK_U(length, <, ND_RPL_DAO_MIN_LEN);
bp += ND_RPL_DAO_MIN_LEN;
length -= ND_RPL_DAO_MIN_LEN;
rpl_flags = GET_U_1(dao->rpl_flags);
if(RPL_DAO_D(rpl_flags)) {
- ND_TCHECK_LEN(dao->rpl_dagid, DAGID_LEN);
- if (length < DAGID_LEN)
- goto tooshort;
- dagid_str = ip6addr_string (ndo, dao->rpl_dagid);
+ ND_ICHECK_U(length, <, DAGID_LEN);
+ dagid_str = GET_IP6ADDR_STRING(dao->rpl_dagid);
bp += DAGID_LEN;
length -= DAGID_LEN;
}
- ND_PRINT(" [dagid:%s,seq:%u,instance:%u%s%s,%02x]",
+ ND_PRINT(" [dagid:%s,seq:%u,instance:%u%s%s,flags:%02x]",
dagid_str,
GET_U_1(dao->rpl_daoseq),
GET_U_1(dao->rpl_instanceid),
if(ndo->ndo_vflag > 1) {
rpl_printopts(ndo, bp, length);
}
- return;
-
-trunc:
- nd_print_trunc(ndo);
- return;
-
-tooshort:
- ND_PRINT(" [|length too short]");
- return;
+ return;
+invalid:
+ nd_print_invalid(ndo);
}
static void
const struct nd_rpl_daoack *daoack = (const struct nd_rpl_daoack *)bp;
const char *dagid_str = "<elided>";
- ND_TCHECK_LEN(daoack, ND_RPL_DAOACK_MIN_LEN);
- if (length < ND_RPL_DAOACK_MIN_LEN)
- goto tooshort;
+ ND_ICHECK_U(length, <, ND_RPL_DAOACK_MIN_LEN);
bp += ND_RPL_DAOACK_MIN_LEN;
length -= ND_RPL_DAOACK_MIN_LEN;
if(RPL_DAOACK_D(GET_U_1(daoack->rpl_flags))) {
- ND_TCHECK_LEN(daoack->rpl_dagid, DAGID_LEN);
- if (length < DAGID_LEN)
- goto tooshort;
- dagid_str = ip6addr_string (ndo, daoack->rpl_dagid);
+ ND_ICHECK_U(length, <, DAGID_LEN);
+ dagid_str = GET_IP6ADDR_STRING(daoack->rpl_dagid);
bp += DAGID_LEN;
length -= DAGID_LEN;
}
if(ndo->ndo_vflag > 1) {
rpl_printopts(ndo, bp, length);
}
- return;
-
-trunc:
- nd_print_trunc(ndo);
- return;
-
-tooshort:
- ND_PRINT(" [|dao-length too short]");
- return;
+ return;
+invalid:
+ nd_print_invalid(ndo);
}
static void
}
-
void
icmp6_print(netdissect_options *ndo,
const u_char *bp, u_int length, const u_char *bp2, int fragmented)
uint16_t sum, udp_sum;
if (ND_TTEST_LEN(bp, length)) {
- ND_TCHECK_2(dp->icmp6_cksum);
udp_sum = GET_BE_U_2(dp->icmp6_cksum);
sum = icmp6_cksum(ndo, ip, dp, length);
if (sum != 0)
}
}
- ND_TCHECK_1(dp->icmp6_type);
icmp6_type = GET_U_1(dp->icmp6_type);
ND_PRINT("ICMP6, %s", tok2str(icmp6_type_values,"unknown icmp6 type (%u)",icmp6_type));
icmp6_type == ICMP6_MOBILEPREFIX_ADVERT ))
ND_PRINT(", length %u", length);
- ND_TCHECK_1(dp->icmp6_code);
icmp6_code = GET_U_1(dp->icmp6_code);
switch (icmp6_type) {
case ICMP6_DST_UNREACH:
- ND_TCHECK_16(oip->ip6_dst);
ND_PRINT(", %s", tok2str(icmp6_dst_unreach_code_values,"unknown unreach code (%u)",icmp6_code));
switch (icmp6_code) {
}
break;
case ICMP6_PACKET_TOO_BIG:
- ND_TCHECK_4(dp->icmp6_mtu);
ND_PRINT(", mtu %u", GET_BE_U_4(dp->icmp6_mtu));
break;
case ICMP6_TIME_EXCEEDED:
- ND_TCHECK_16(oip->ip6_dst);
switch (icmp6_code) {
case ICMP6_TIME_EXCEED_TRANSIT:
ND_PRINT(" for %s",
break;
case ICMP6_ECHO_REQUEST:
case ICMP6_ECHO_REPLY:
- /* The check below covers both icmp6_id and icmp6_seq. */
- ND_TCHECK_2(dp->icmp6_seq);
ND_PRINT(", id %u, seq %u", GET_BE_U_2(dp->icmp6_id),
GET_BE_U_2(dp->icmp6_seq));
break;
const struct nd_router_advert *p;
p = (const struct nd_router_advert *)dp;
- ND_TCHECK_4(p->nd_ra_retransmit);
ND_PRINT("\n\thop limit %u, Flags [%s]"
", pref %s, router lifetime %us, reachable time %ums, retrans timer %ums",
GET_U_1(p->nd_ra_curhoplimit),
{
const struct nd_neighbor_solicit *p;
p = (const struct nd_neighbor_solicit *)dp;
- ND_TCHECK_16(p->nd_ns_target);
ND_PRINT(", who has %s", GET_IP6ADDR_STRING(p->nd_ns_target));
if (ndo->ndo_vflag) {
#define NDSOLLEN 24
const struct nd_neighbor_advert *p;
p = (const struct nd_neighbor_advert *)dp;
- ND_TCHECK_16(p->nd_na_target);
ND_PRINT(", tgt is %s",
GET_IP6ADDR_STRING(p->nd_na_target));
if (ndo->ndo_vflag) {
const struct nd_redirect *p;
p = (const struct nd_redirect *)dp;
- ND_TCHECK_16(p->nd_rd_dst);
ND_PRINT(", %s", GET_IP6ADDR_STRING(p->nd_rd_dst));
- ND_TCHECK_16(p->nd_rd_target);
ND_PRINT(" to %s", GET_IP6ADDR_STRING(p->nd_rd_target));
#define REDIRECTLEN 40
if (ndo->ndo_vflag) {
break;
case ICMP6_MOBILEPREFIX_SOLICIT: /* fall through */
case ICMP6_HADISCOV_REQUEST:
- ND_TCHECK_2(dp->icmp6_data16[0]);
ND_PRINT(", id 0x%04x", GET_BE_U_2(dp->icmp6_data16[0]));
break;
case ICMP6_HADISCOV_REPLY:
const u_char *cp;
const u_char *p;
- ND_TCHECK_2(dp->icmp6_data16[0]);
ND_PRINT(", id 0x%04x",
GET_BE_U_2(dp->icmp6_data16[0]));
cp = (const u_char *)dp + length;
p = (const u_char *)(dp + 1);
while (p < cp) {
- ND_TCHECK_16(p);
ND_PRINT(", %s", GET_IP6ADDR_STRING(p));
p += 16;
}
if (ndo->ndo_vflag) {
uint16_t flags;
- ND_TCHECK_2(dp->icmp6_data16[0]);
ND_PRINT(", id 0x%04x",
GET_BE_U_2(dp->icmp6_data16[0]));
- ND_TCHECK_2(dp->icmp6_data16[1]);
flags = GET_BE_U_2(dp->icmp6_data16[1]);
if (flags & 0xc000)
ND_PRINT(" ");
break;
case ND_OPT_PREFIX_INFORMATION:
opp = (const struct nd_opt_prefix_info *)op;
- ND_TCHECK_16(opp->nd_opt_pi_prefix);
ND_PRINT("%s/%u%s, Flags [%s], valid time %s",
GET_IP6ADDR_STRING(opp->nd_opt_pi_prefix),
GET_U_1(opp->nd_opt_pi_prefix_len),
break;
case ND_OPT_MTU:
opm = (const struct nd_opt_mtu *)op;
- ND_TCHECK_4(opm->nd_opt_mtu_mtu);
ND_PRINT(" %u%s",
GET_BE_U_4(opm->nd_opt_mtu_mtu),
(opt_len != 1) ? "bad option length" : "" );
ND_PRINT(" lifetime %us,",
GET_BE_U_4(oprd->nd_opt_rdnss_lifetime));
for (i = 0; i < l; i++) {
- ND_TCHECK_16(oprd->nd_opt_rdnss_addr[i]);
ND_PRINT(" addr: %s",
GET_IP6ADDR_STRING(oprd->nd_opt_rdnss_addr[i]));
}
break;
case ND_OPT_ADVINTERVAL:
opa = (const struct nd_opt_advinterval *)op;
- ND_TCHECK_4(opa->nd_opt_adv_interval);
ND_PRINT(" %ums",
GET_BE_U_4(opa->nd_opt_adv_interval));
break;
case ND_OPT_HOMEAGENT_INFO:
oph = (const struct nd_opt_homeagent_info *)op;
- ND_TCHECK_2(oph->nd_opt_hai_lifetime);
ND_PRINT(" preference %u, lifetime %u",
GET_BE_U_2(oph->nd_opt_hai_preference),
GET_BE_U_2(oph->nd_opt_hai_lifetime));
case 1:
break;
case 2:
- ND_TCHECK_8(opri + 1);
- memcpy(&in6, opri + 1, 8);
+ GET_CPY_BYTES(&in6, opri + 1, 8);
break;
case 3:
- ND_TCHECK_16(opri + 1);
- memcpy(&in6, opri + 1, 16);
+ GET_CPY_BYTES(&in6, opri + 1, 16);
break;
default:
goto trunc;
}
- ND_PRINT(" %s/%u", ip6addr_string(ndo, (const u_char *)&in6),
+ ND_PRINT(" %s/%u", ip6addr_string(ndo, (const u_char *)&in6), /* local buffer, not packet data; don't use GET_IP6ADDR_STRING() */
GET_U_1(opri->nd_opt_rti_prefixlen));
ND_PRINT(", pref=%s",
get_rtpref(GET_U_1(opri->nd_opt_rti_flags)));
return;
}
- ND_TCHECK_2(icp->icmp6_data16[1]);
ngroups = GET_BE_U_2(icp->icmp6_data16[1]);
ND_PRINT(", %u group record(s)", ngroups);
if (ndo->ndo_vflag > 0) {
ND_PRINT(" [invalid number of groups]");
return;
}
- ND_TCHECK_LEN(bp + 4 + group, sizeof(nd_ipv6));
ND_PRINT(" [gaddr %s", GET_IP6ADDR_STRING(bp + group + 4));
ND_PRINT(" %s", tok2str(mldv2report2str, " [v2-report-#%u]",
GET_U_1(bp + group)));
/* Print the sources */
ND_PRINT(" {");
for (j = 0; j < nsrcs; j++) {
- ND_TCHECK_LEN(bp + group + 20 + (j * sizeof(nd_ipv6)),
- sizeof(nd_ipv6));
ND_PRINT(" %s", GET_IP6ADDR_STRING(bp + group + 20 + (j * sizeof(nd_ipv6))));
}
ND_PRINT(" }");
ND_PRINT("]");
}
}
- return;
-trunc:
- nd_print_trunc(ndo);
- return;
}
static void
ND_PRINT(" [invalid len %u]", len);
return;
}
- ND_TCHECK_2(icp->icmp6_data16[0]);
mrc = GET_BE_U_2(icp->icmp6_data16[0]);
if (mrc < 32768) {
mrt = mrc;
if (ndo->ndo_vflag) {
ND_PRINT(" [max resp delay=%u]", mrt);
}
- ND_TCHECK_LEN(bp + 8, sizeof(nd_ipv6));
ND_PRINT(" [gaddr %s", GET_IP6ADDR_STRING(bp + 8));
if (ndo->ndo_vflag) {
- ND_TCHECK_1(bp + 25);
if (GET_U_1(bp + 24) & 0x08) {
ND_PRINT(" sflag");
}
ND_PRINT(" qqi=%u", qqi);
}
- ND_TCHECK_2(bp + 26);
nsrcs = GET_BE_U_2(bp + 26);
if (nsrcs > 0) {
if (len < 28 + nsrcs * sizeof(nd_ipv6))
else if (ndo->ndo_vflag > 1) {
ND_PRINT(" {");
for (i = 0; i < nsrcs; i++) {
- ND_TCHECK_LEN(bp + 28 + (i * sizeof(nd_ipv6)),
- sizeof(nd_ipv6));
ND_PRINT(" %s", GET_IP6ADDR_STRING(bp + 28 + (i * sizeof(nd_ipv6))));
}
ND_PRINT(" }");
ND_PRINT(", %u source(s)", nsrcs);
}
ND_PRINT("]");
- return;
-trunc:
- nd_print_trunc(ndo);
- return;
}
static void
break;
}
-
/* XXX backward compat, icmp-name-lookup-03 */
if (siz == sizeof(*ni6)) {
ND_PRINT(", 03 draft");
ND_PRINT(", ");
ND_PRINT("DNS name");
cp = (const u_char *)(ni6 + 1) + 4;
- ND_TCHECK_1(cp);
if (GET_U_1(cp) == ep - cp - 1) {
/* icmp-name-lookup-03, pascal string */
if (ndo->ndo_vflag)
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