void
hsrp_print(netdissect_options *ndo, const u_char *bp, u_int len)
{
const struct hsrp *hp = (const struct hsrp *) bp;
uint8_t version;
ndo->ndo_protocol = "hsrp";
ND_TCHECK_1(hp->hsrp_version);
version = GET_U_1(hp->hsrp_version);
ND_PRINT("HSRPv%u", version);
if (version != 0)
return;
ND_TCHECK_1(hp->hsrp_op_code);
ND_PRINT("-");
ND_PRINT("%s ",
tok2strary(op_code_str, "unknown (%u)", GET_U_1(hp->hsrp_op_code)));
ND_PRINT("%u: ", len);
ND_TCHECK_1(hp->hsrp_state);
ND_PRINT("state=%s ",
tok2str(states, "Unknown (%u)", GET_U_1(hp->hsrp_state)));
ND_TCHECK_1(hp->hsrp_group);
ND_PRINT("group=%u ", GET_U_1(hp->hsrp_group));
ND_TCHECK_1(hp->hsrp_reserved);
if (GET_U_1(hp->hsrp_reserved) != 0) {
ND_PRINT("[reserved=%u!] ", GET_U_1(hp->hsrp_reserved));
}
ND_TCHECK_4(hp->hsrp_virtaddr);
ND_PRINT("addr=%s", ipaddr_string(ndo, hp->hsrp_virtaddr));
if (ndo->ndo_vflag) {
ND_PRINT(" hellotime=");
unsigned_relts_print(ndo, GET_U_1(hp->hsrp_hellotime));
ND_PRINT(" holdtime=");
unsigned_relts_print(ndo, GET_U_1(hp->hsrp_holdtime));
ND_PRINT(" priority=%u", GET_U_1(hp->hsrp_priority));
ND_PRINT(" auth=\"");
if (nd_printn(ndo, hp->hsrp_authdata, sizeof(hp->hsrp_authdata),
ndo->ndo_snapend)) {
ND_PRINT("\"");
goto trunc;
}
ND_PRINT("\"");
}
return;
trunc:
nd_print_trunc(ndo);
}
static int
print_prune(netdissect_options *ndo,
const u_char *bp)
{
ND_TCHECK_LEN(bp, 12);
ND_PRINT(" src %s grp %s", ipaddr_string(ndo, bp), ipaddr_string(ndo, bp + 4));
bp += 8;
ND_PRINT(" timer ");
unsigned_relts_print(ndo, GET_BE_U_4(bp));
return (0);
trunc:
return (-1);
}
void
lwres_print(netdissect_options *ndo,
const u_char *bp, u_int length)
{
const u_char *p;
const struct lwres_lwpacket *np;
uint32_t v;
const u_char *s;
int response;
int advance;
int unsupported = 0;
ndo->ndo_protocol = "lwres";
np = (const struct lwres_lwpacket *)bp;
ND_TCHECK_2(np->authlength);
ND_PRINT(" lwres");
v = EXTRACT_BE_U_2(np->version);
if (ndo->ndo_vflag || v != LWRES_LWPACKETVERSION_0)
ND_PRINT(" v%u", v);
if (v != LWRES_LWPACKETVERSION_0) {
s = bp + EXTRACT_BE_U_4(np->length);
goto tail;
}
response = EXTRACT_BE_U_2(np->pktflags) & LWRES_LWPACKETFLAG_RESPONSE;
/* opcode and pktflags */
v = EXTRACT_BE_U_4(np->opcode);
ND_PRINT(" %s%s", tok2str(opcode, "#0x%x", v), response ? "" : "?");
/* pktflags */
v = EXTRACT_BE_U_2(np->pktflags);
if (v & ~LWRES_LWPACKETFLAG_RESPONSE)
ND_PRINT("[0x%x]", v);
if (ndo->ndo_vflag > 1) {
ND_PRINT(" ("); /*)*/
ND_PRINT("serial:0x%x", EXTRACT_BE_U_4(np->serial));
ND_PRINT(" result:0x%x", EXTRACT_BE_U_4(np->result));
ND_PRINT(" recvlen:%u", EXTRACT_BE_U_4(np->recvlength));
/* BIND910: not used */
if (ndo->ndo_vflag > 2) {
ND_PRINT(" authtype:0x%x", EXTRACT_BE_U_2(np->authtype));
ND_PRINT(" authlen:%u", EXTRACT_BE_U_2(np->authlength));
}
/*(*/
ND_PRINT(")");
}
/* per-opcode content */
if (!response) {
/*
* queries
*/
const lwres_gabnrequest_t *gabn;
const lwres_gnbarequest_t *gnba;
const lwres_grbnrequest_t *grbn;
uint32_t l;
gabn = NULL;
gnba = NULL;
grbn = NULL;
p = (const u_char *)(np + 1);
switch (EXTRACT_BE_U_4(np->opcode)) {
case LWRES_OPCODE_NOOP:
s = p;
break;
case LWRES_OPCODE_GETADDRSBYNAME:
gabn = (const lwres_gabnrequest_t *)p;
ND_TCHECK_2(gabn->namelen);
/* BIND910: not used */
if (ndo->ndo_vflag > 2) {
ND_PRINT(" flags:0x%x",
EXTRACT_BE_U_4(gabn->flags));
}
v = EXTRACT_BE_U_4(gabn->addrtypes);
switch (v & (LWRES_ADDRTYPE_V4 | LWRES_ADDRTYPE_V6)) {
case LWRES_ADDRTYPE_V4:
ND_PRINT(" IPv4");
break;
case LWRES_ADDRTYPE_V6:
ND_PRINT(" IPv6");
break;
case LWRES_ADDRTYPE_V4 | LWRES_ADDRTYPE_V6:
ND_PRINT(" IPv4/6");
break;
}
if (v & ~(LWRES_ADDRTYPE_V4 | LWRES_ADDRTYPE_V6))
ND_PRINT("[0x%x]", v);
s = p + LWRES_GABNREQUEST_LEN;
l = EXTRACT_BE_U_2(gabn->namelen);
advance = lwres_printname(ndo, l, s);
if (advance < 0)
goto trunc;
s += advance;
break;
case LWRES_OPCODE_GETNAMEBYADDR:
gnba = (const lwres_gnbarequest_t *)p;
ND_TCHECK_4(gnba->flags);
/* BIND910: not used */
if (ndo->ndo_vflag > 2) {
ND_PRINT(" flags:0x%x",
EXTRACT_BE_U_4(gnba->flags));
}
s = p + LWRES_GNBAREQUEST_LEN;
advance = lwres_printaddr(ndo, s);
if (advance < 0)
goto trunc;
s += advance;
break;
case LWRES_OPCODE_GETRDATABYNAME:
/* XXX no trace, not tested */
grbn = (const lwres_grbnrequest_t *)p;
ND_TCHECK_2(grbn->namelen);
/* BIND910: not used */
if (ndo->ndo_vflag > 2) {
ND_PRINT(" flags:0x%x",
EXTRACT_BE_U_4(grbn->flags));
}
ND_PRINT(" %s", tok2str(ns_type2str, "Type%u",
EXTRACT_BE_U_2(grbn->rdtype)));
if (EXTRACT_BE_U_2(grbn->rdclass) != C_IN) {
ND_PRINT(" %s", tok2str(ns_class2str, "Class%u",
EXTRACT_BE_U_2(grbn->rdclass)));
}
s = p + LWRES_GRBNREQUEST_LEN;
l = EXTRACT_BE_U_2(grbn->namelen);
advance = lwres_printname(ndo, l, s);
if (advance < 0)
goto trunc;
s += advance;
break;
default:
s = p;
unsupported++;
break;
}
} else {
/*
* responses
*/
const lwres_gabnresponse_t *gabn;
const lwres_gnbaresponse_t *gnba;
const lwres_grbnresponse_t *grbn;
uint32_t l, na;
uint32_t i;
gabn = NULL;
gnba = NULL;
grbn = NULL;
p = (const u_char *)(np + 1);
switch (EXTRACT_BE_U_4(np->opcode)) {
case LWRES_OPCODE_NOOP:
s = p;
break;
case LWRES_OPCODE_GETADDRSBYNAME:
gabn = (const lwres_gabnresponse_t *)p;
ND_TCHECK_2(gabn->realnamelen);
/* BIND910: not used */
if (ndo->ndo_vflag > 2) {
ND_PRINT(" flags:0x%x",
EXTRACT_BE_U_4(gabn->flags));
}
ND_PRINT(" %u/%u", EXTRACT_BE_U_2(gabn->naliases),
EXTRACT_BE_U_2(gabn->naddrs));
s = p + LWRES_GABNRESPONSE_LEN;
l = EXTRACT_BE_U_2(gabn->realnamelen);
advance = lwres_printname(ndo, l, s);
if (advance < 0)
goto trunc;
s += advance;
/* aliases */
na = EXTRACT_BE_U_2(gabn->naliases);
for (i = 0; i < na; i++) {
advance = lwres_printnamelen(ndo, s);
if (advance < 0)
goto trunc;
s += advance;
}
/* addrs */
na = EXTRACT_BE_U_2(gabn->naddrs);
for (i = 0; i < na; i++) {
advance = lwres_printaddr(ndo, s);
if (advance < 0)
goto trunc;
s += advance;
}
break;
case LWRES_OPCODE_GETNAMEBYADDR:
gnba = (const lwres_gnbaresponse_t *)p;
ND_TCHECK_2(gnba->realnamelen);
/* BIND910: not used */
if (ndo->ndo_vflag > 2) {
ND_PRINT(" flags:0x%x",
EXTRACT_BE_U_4(gnba->flags));
}
ND_PRINT(" %u", EXTRACT_BE_U_2(gnba->naliases));
s = p + LWRES_GNBARESPONSE_LEN;
l = EXTRACT_BE_U_2(gnba->realnamelen);
advance = lwres_printname(ndo, l, s);
if (advance < 0)
goto trunc;
s += advance;
/* aliases */
na = EXTRACT_BE_U_2(gnba->naliases);
for (i = 0; i < na; i++) {
advance = lwres_printnamelen(ndo, s);
if (advance < 0)
goto trunc;
s += advance;
}
break;
case LWRES_OPCODE_GETRDATABYNAME:
/* XXX no trace, not tested */
grbn = (const lwres_grbnresponse_t *)p;
ND_TCHECK_2(grbn->nsigs);
/* BIND910: not used */
if (ndo->ndo_vflag > 2) {
ND_PRINT(" flags:0x%x",
EXTRACT_BE_U_4(grbn->flags));
}
ND_PRINT(" %s", tok2str(ns_type2str, "Type%u",
EXTRACT_BE_U_2(grbn->rdtype)));
if (EXTRACT_BE_U_2(grbn->rdclass) != C_IN) {
ND_PRINT(" %s", tok2str(ns_class2str, "Class%u",
EXTRACT_BE_U_2(grbn->rdclass)));
}
ND_PRINT(" TTL ");
unsigned_relts_print(ndo,
EXTRACT_BE_U_4(grbn->ttl));
ND_PRINT(" %u/%u", EXTRACT_BE_U_2(grbn->nrdatas),
EXTRACT_BE_U_2(grbn->nsigs));
s = p + LWRES_GRBNRESPONSE_LEN;
advance = lwres_printnamelen(ndo, s);
if (advance < 0)
goto trunc;
s += advance;
/* rdatas */
na = EXTRACT_BE_U_2(grbn->nrdatas);
for (i = 0; i < na; i++) {
/* XXX should decode resource data */
advance = lwres_printbinlen(ndo, s);
if (advance < 0)
goto trunc;
s += advance;
}
/* sigs */
na = EXTRACT_BE_U_2(grbn->nsigs);
for (i = 0; i < na; i++) {
/* XXX how should we print it? */
advance = lwres_printbinlen(ndo, s);
if (advance < 0)
goto trunc;
s += advance;
}
break;
default:
s = p;
unsupported++;
break;
}
}
tail:
/* length mismatch */
if (EXTRACT_BE_U_4(np->length) != length) {
ND_PRINT(" [len: %u != %u]", EXTRACT_BE_U_4(np->length),
length);
}
if (!unsupported && s < bp + EXTRACT_BE_U_4(np->length))
ND_PRINT("[extra]");
return;
trunc:
ND_PRINT("[|lwres]");
}
