static void
babel_print_v2(const u_char *cp, u_int length) {
u_int i;
u_short bodylen;
u_char v4_prefix[16] =
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xFF, 0xFF, 0, 0, 0, 0 };
u_char v6_prefix[16] = {0};
TCHECK2(*cp, 4);
if (length < 4)
goto corrupt;
bodylen = EXTRACT_16BITS(cp + 2);
printf(" (%u)", bodylen);
/* Process the TLVs in the body */
i = 0;
while(i < bodylen) {
const u_char *message;
u_char type, len;
message = cp + 4 + i;
TCHECK2(*message, 2);
ICHECK(i, 2);
type = message[0];
len = message[1];
TCHECK2(*message, 2 + len);
ICHECK(i, 2 + len);
switch(type) {
case MESSAGE_PAD1: {
if(!vflag)
printf(" pad1");
else
printf("\n\tPad 1");
}
break;
case MESSAGE_PADN: {
if(!vflag)
printf(" padN");
else
printf("\n\tPad %d", len + 2);
}
break;
case MESSAGE_ACK_REQ: {
u_short nonce, interval;
if(!vflag)
printf(" ack-req");
else {
printf("\n\tAcknowledgment Request ");
if(len < 6) goto corrupt;
nonce = EXTRACT_16BITS(message + 4);
interval = EXTRACT_16BITS(message + 6);
printf("%04x %d", nonce, interval);
}
}
break;
case MESSAGE_ACK: {
u_short nonce;
if(!vflag)
printf(" ack");
else {
printf("\n\tAcknowledgment ");
if(len < 2) goto corrupt;
nonce = EXTRACT_16BITS(message + 2);
printf("%04x", nonce);
}
}
break;
case MESSAGE_HELLO: {
u_short seqno, interval;
if(!vflag)
printf(" hello");
else {
printf("\n\tHello ");
if(len < 6) goto corrupt;
seqno = EXTRACT_16BITS(message + 4);
interval = EXTRACT_16BITS(message + 6);
printf("seqno %u interval %u", seqno, interval);
}
}
break;
case MESSAGE_IHU: {
unsigned short txcost, interval;
if(!vflag)
printf(" ihu");
else {
u_char address[16];
int rc;
printf("\n\tIHU ");
if(len < 6) goto corrupt;
txcost = EXTRACT_16BITS(message + 4);
interval = EXTRACT_16BITS(message + 6);
rc = network_address(message[2], message + 8, len - 6, address);
if(rc < 0) { printf("[|babel]"); break; }
printf("%s txcost %u interval %d",
format_address(address), txcost, interval);
}
}
break;
case MESSAGE_ROUTER_ID: {
if(!vflag)
printf(" router-id");
else {
printf("\n\tRouter Id");
if(len < 10) goto corrupt;
printf(" %s", format_id(message + 4));
}
}
break;
case MESSAGE_NH: {
if(!vflag)
printf(" nh");
else {
int rc;
u_char nh[16];
printf("\n\tNext Hop");
if(len < 2) goto corrupt;
rc = network_address(message[2], message + 4, len - 2, nh);
if(rc < 0) goto corrupt;
printf(" %s", format_address(nh));
}
}
break;
case MESSAGE_UPDATE: {
if(!vflag) {
printf(" update");
if(len < 1)
printf("/truncated");
else
printf("%s%s%s",
(message[3] & 0x80) ? "/prefix": "",
(message[3] & 0x40) ? "/id" : "",
(message[3] & 0x3f) ? "/unknown" : "");
} else {
u_short interval, seqno, metric;
u_char plen;
int rc;
u_char prefix[16];
printf("\n\tUpdate");
if(len < 10) goto corrupt;
plen = message[4] + (message[2] == 1 ? 96 : 0);
rc = network_prefix(message[2], message[4], message[5],
message + 12,
message[2] == 1 ? v4_prefix : v6_prefix,
len - 10, prefix);
if(rc < 0) goto corrupt;
interval = EXTRACT_16BITS(message + 6);
seqno = EXTRACT_16BITS(message + 8);
metric = EXTRACT_16BITS(message + 10);
printf("%s%s%s %s metric %u seqno %u interval %u",
(message[3] & 0x80) ? "/prefix": "",
(message[3] & 0x40) ? "/id" : "",
(message[3] & 0x3f) ? "/unknown" : "",
format_prefix(prefix, plen),
metric, seqno, interval);
if(message[3] & 0x80) {
if(message[2] == 1)
memcpy(v4_prefix, prefix, 16);
else
memcpy(v6_prefix, prefix, 16);
}
}
}
break;
case MESSAGE_REQUEST: {
if(!vflag)
printf(" request");
else {
int rc;
u_char prefix[16], plen;
printf("\n\tRequest ");
if(len < 2) goto corrupt;
plen = message[3] + (message[2] == 1 ? 96 : 0);
rc = network_prefix(message[2], message[3], 0,
message + 4, NULL, len - 2, prefix);
if(rc < 0) goto corrupt;
plen = message[3] + (message[2] == 1 ? 96 : 0);
printf("for %s",
message[2] == 0 ? "any" : format_prefix(prefix, plen));
}
}
break;
case MESSAGE_MH_REQUEST : {
if(!vflag)
printf(" mh-request");
else {
int rc;
u_short seqno;
u_char prefix[16], plen;
printf("\n\tMH-Request ");
if(len < 14) goto corrupt;
seqno = EXTRACT_16BITS(message + 4);
rc = network_prefix(message[2], message[3], 0,
message + 16, NULL, len - 14, prefix);
if(rc < 0) goto corrupt;
plen = message[3] + (message[2] == 1 ? 96 : 0);
printf("(%u hops) for %s seqno %u id %s",
message[6], format_prefix(prefix, plen),
seqno, format_id(message + 8));
}
}
break;
default:
if(!vflag)
printf(" unknown");
else
printf("\n\tUnknown message type %d", type);
}
i += len + 2;
}
return;
trunc:
printf(" [|babel]");
return;
corrupt:
printf(" (corrupt)");
return;
}
static int
network_address(int ae, const unsigned char *a, unsigned int len,
unsigned char *a_r)
{
return network_prefix(ae, -1, 0, a, NULL, len, a_r);
}
static int
dissect_babel(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
proto_item *ti;
unsigned char v4_prefix[16] = {0}, v6_prefix[16] = {0};
int i = 0;
proto_tree *babel_tree = NULL;
guint8 version;
guint16 bodylen;
if(tvb_length(tvb) < 4)
return 0;
if(tvb_get_guint8(tvb, 0) != 42)
return 0;
version = tvb_get_guint8(tvb, 1);
col_set_str(pinfo->cinfo, COL_PROTOCOL, "Babel");
col_set_str(pinfo->cinfo, COL_INFO, "Babel");
if(version != 2) {
col_add_fstr(pinfo->cinfo, COL_INFO, "Version %u", version);
return 2;
}
if(tree) {
ti = proto_tree_add_item(tree, proto_babel, tvb, 0, -1, ENC_NA);
babel_tree = proto_item_add_subtree(ti, ett_babel);
proto_tree_add_item(babel_tree, hf_babel_magic, tvb, 0, 1, ENC_NA);
proto_tree_add_item(babel_tree, hf_babel_version, tvb, 1, 1, ENC_NA);
proto_tree_add_item(babel_tree, hf_babel_bodylen,
tvb, 2, 2, ENC_BIG_ENDIAN);
}
bodylen = tvb_get_ntohs(tvb, 2);
i = 0;
while(i < bodylen) {
guint8 type, len = 0, total_length;
proto_tree *message_tree = NULL;
int message = 4 + i;
type = tvb_get_guint8(tvb, message);
if(type == MESSAGE_PAD1)
total_length = 1;
else {
len = tvb_get_guint8(tvb, message + 1);
total_length = len + 2;
}
col_append_fstr(pinfo->cinfo, COL_INFO, " %s",
val_to_str(type, messages, "unknown"));
ti = proto_tree_add_uint_format(babel_tree, hf_babel_message,
tvb, message, total_length, type,
"Message %s (%u)",
val_to_str(type, messages,
"unknown"),
type);
if(tree) {
message_tree = proto_item_add_subtree(ti, ett_message);
proto_tree_add_item(message_tree, hf_babel_message_type,
tvb, message, 1, ENC_NA);
}
if(type == MESSAGE_PAD1) {
i++;
continue;
}
if(tree) {
proto_tree_add_item(message_tree, hf_babel_message_length,
tvb, message + 1, 1, ENC_BIG_ENDIAN);
if(type == MESSAGE_PADN) {
} else if(type == MESSAGE_ACK_REQ) {
proto_tree_add_item(message_tree, hf_babel_message_nonce,
tvb, message + 4, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(message_tree, hf_babel_message_interval,
tvb, message + 6, 2, ENC_BIG_ENDIAN);
} else if(type == MESSAGE_ACK) {
proto_tree_add_item(message_tree, hf_babel_message_nonce,
tvb, message + 2, 2, ENC_BIG_ENDIAN);
} else if(type == MESSAGE_HELLO) {
proto_tree_add_item(message_tree, hf_babel_message_seqno,
tvb, message + 4, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(message_tree, hf_babel_message_interval,
tvb, message + 6, 2, ENC_BIG_ENDIAN);
} else if(type == MESSAGE_IHU) {
proto_tree *subtree;
unsigned char address[16];
int rc =
network_address(tvb_get_guint8(tvb, message + 2),
tvb_get_ptr(tvb, message + 8, len - 6),
len - 6,
address);
proto_tree_add_item(message_tree, hf_babel_message_rxcost,
tvb, message + 4, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(message_tree, hf_babel_message_interval,
tvb, message + 6, 2, ENC_BIG_ENDIAN);
ti = proto_tree_add_text(message_tree,
tvb, message + 4, len - 2,
"Address: %s",
format_address(rc < 0 ?
NULL : address));
subtree = proto_item_add_subtree(ti, ett_subtree);
proto_tree_add_item(subtree, hf_babel_message_ae,
tvb, message + 2, 1, ENC_NA);
proto_tree_add_item(subtree, hf_babel_message_prefix,
tvb, message + 4, len - 2, ENC_NA);
} else if(type == MESSAGE_ROUTER_ID) {
proto_tree_add_item(message_tree, hf_babel_message_routerid,
tvb, message + 4, 8, ENC_NA);
} else if(type == MESSAGE_NH) {
proto_tree *subtree;
unsigned char nh[16];
int rc =
network_address(tvb_get_guint8(tvb, message + 2),
tvb_get_ptr(tvb, message + 4, len - 2),
len - 2,
nh);
ti = proto_tree_add_text(message_tree,
tvb, message + 4, len - 2,
"NH: %s",
format_address(rc < 0 ? NULL : nh));
subtree = proto_item_add_subtree(ti, ett_subtree);
proto_tree_add_item(subtree, hf_babel_message_ae,
tvb, message + 2, 1, ENC_NA);
proto_tree_add_item(subtree, hf_babel_message_prefix,
tvb, message + 4, len - 2, ENC_NA);
} else if(type == MESSAGE_UPDATE) {
proto_tree *subtree;
unsigned char p[16];
guint8 ae = tvb_get_guint8(tvb, message + 2);
guint8 flags = tvb_get_guint8(tvb, message + 3);
guint8 plen = tvb_get_guint8(tvb, message + 4);
int rc =
network_prefix(ae, plen,
tvb_get_guint8(tvb, message + 5),
tvb_get_ptr(tvb, message + 12, len - 10),
ae == 1 ? v4_prefix : v6_prefix,
len - 10, p);
if(rc >= 0 && (flags & 0x80)) {
if(ae == 1)
memcpy(v4_prefix, p, 16);
else
memcpy(v6_prefix, p, 16);
}
proto_tree_add_item(message_tree, hf_babel_message_flags,
tvb, message + 3, 1, ENC_NA);
proto_tree_add_item(message_tree, hf_babel_message_interval,
tvb, message + 6, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(message_tree, hf_babel_message_seqno,
tvb, message + 8, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(message_tree, hf_babel_message_metric,
tvb, message + 10, 2, ENC_BIG_ENDIAN);
ti = proto_tree_add_text(message_tree,
tvb, message + 12, len - 10,
"Prefix: %s",
format_prefix(rc < 0 ? NULL : p,
plen));
subtree = proto_item_add_subtree(ti, ett_subtree);
proto_tree_add_item(subtree, hf_babel_message_ae,
tvb, message + 2, 1, ENC_NA);
proto_tree_add_item(subtree, hf_babel_message_plen,
tvb, message + 4, 1, ENC_NA);
proto_tree_add_item(subtree, hf_babel_message_omitted,
tvb, message + 5, 1, ENC_NA);
proto_tree_add_item(subtree, hf_babel_message_prefix,
tvb, message + 12, len - 10, ENC_NA);
} else if(type == MESSAGE_REQUEST) {
proto_tree *subtree;
unsigned char p[16];
guint8 plen = tvb_get_guint8(tvb, message + 3);
int rc =
network_prefix(tvb_get_guint8(tvb, message + 2), plen,
0,
tvb_get_ptr(tvb, message + 4, len - 2),
NULL,
len - 2, p);
ti = proto_tree_add_text(message_tree,
tvb, message + 4, len - 2,
"Prefix: %s",
format_prefix(rc < 0 ? NULL : p,
plen));
subtree = proto_item_add_subtree(ti, ett_subtree);
proto_tree_add_item(subtree, hf_babel_message_ae,
tvb, message + 2, 1, ENC_NA);
proto_tree_add_item(subtree, hf_babel_message_plen,
tvb, message + 3, 1, ENC_NA);
proto_tree_add_item(subtree, hf_babel_message_prefix,
tvb, message + 4, len - 2, ENC_NA);
} else if(type == MESSAGE_MH_REQUEST) {
proto_tree *subtree;
unsigned char p[16];
guint8 plen = tvb_get_guint8(tvb, message + 3);
int rc =
network_prefix(tvb_get_guint8(tvb, message + 2), plen,
0,
tvb_get_ptr(tvb, message + 16, len - 14),
NULL,
len - 14, p);
proto_tree_add_item(message_tree, hf_babel_message_seqno,
tvb, message + 4, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(message_tree, hf_babel_message_hopcount,
tvb, message + 6, 1, ENC_NA);
proto_tree_add_item(message_tree, hf_babel_message_routerid,
tvb, message + 8, 8, ENC_NA);
ti = proto_tree_add_text(message_tree,
tvb, message + 16, len - 14,
"Prefix: %s",
format_prefix(rc < 0 ? NULL : p,
plen));
subtree = proto_item_add_subtree(ti, ett_subtree);
proto_tree_add_item(subtree, hf_babel_message_ae,
tvb, message + 2, 1, ENC_NA);
proto_tree_add_item(subtree, hf_babel_message_plen,
tvb, message + 3, 1, ENC_NA);
proto_tree_add_item(subtree, hf_babel_message_prefix,
tvb, message + 16, len - 14, ENC_NA);
}
}
i += len + 2;
}
return i;
}
static int
network_address(int ae, tvbuff_t *tvb, int offset, unsigned int len,
unsigned char *a_r)
{
return network_prefix(ae, -1, 0, tvb, offset, NULL, len, a_r);
}
static void
babel_print_v2(netdissect_options *ndo,
const u_char *cp, u_int length)
{
u_int i;
u_short bodylen;
u_char v4_prefix[16] =
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xFF, 0xFF, 0, 0, 0, 0 };
u_char v6_prefix[16] = {0};
ND_TCHECK2(*cp, 4);
if (length < 4)
goto corrupt;
bodylen = EXTRACT_16BITS(cp + 2);
ND_PRINT((ndo, " (%u)", bodylen));
/* Process the TLVs in the body */
i = 0;
while(i < bodylen) {
const u_char *message;
u_int type, len;
message = cp + 4 + i;
ND_TCHECK2(*message, 1);
if((type = message[0]) == MESSAGE_PAD1) {
ND_PRINT((ndo, ndo->ndo_vflag ? "\n\tPad 1" : " pad1"));
i += 1;
continue;
}
ND_TCHECK2(*message, 2);
ICHECK(i, 2);
len = message[1];
ND_TCHECK2(*message, 2 + len);
ICHECK(i, 2 + len);
switch(type) {
case MESSAGE_PADN: {
if (!ndo->ndo_vflag)
ND_PRINT((ndo, " padN"));
else
ND_PRINT((ndo, "\n\tPad %d", len + 2));
}
break;
case MESSAGE_ACK_REQ: {
u_short nonce, interval;
if (!ndo->ndo_vflag)
ND_PRINT((ndo, " ack-req"));
else {
ND_PRINT((ndo, "\n\tAcknowledgment Request "));
if(len < 6) goto corrupt;
nonce = EXTRACT_16BITS(message + 4);
interval = EXTRACT_16BITS(message + 6);
ND_PRINT((ndo, "%04x %s", nonce, format_interval(interval)));
}
}
break;
case MESSAGE_ACK: {
u_short nonce;
if (!ndo->ndo_vflag)
ND_PRINT((ndo, " ack"));
else {
ND_PRINT((ndo, "\n\tAcknowledgment "));
if(len < 2) goto corrupt;
nonce = EXTRACT_16BITS(message + 2);
ND_PRINT((ndo, "%04x", nonce));
}
}
break;
case MESSAGE_HELLO: {
u_short seqno, interval;
if (!ndo->ndo_vflag)
ND_PRINT((ndo, " hello"));
else {
ND_PRINT((ndo, "\n\tHello "));
if(len < 6) goto corrupt;
seqno = EXTRACT_16BITS(message + 4);
interval = EXTRACT_16BITS(message + 6);
ND_PRINT((ndo, "seqno %u interval %s", seqno, format_interval(interval)));
/* Extra data. */
if(len > 6)
subtlvs_print(ndo, message + 8, message + 2 + len, type);
}
}
break;
case MESSAGE_IHU: {
unsigned short txcost, interval;
if (!ndo->ndo_vflag)
ND_PRINT((ndo, " ihu"));
else {
u_char address[16];
int rc;
ND_PRINT((ndo, "\n\tIHU "));
if(len < 6) goto corrupt;
txcost = EXTRACT_16BITS(message + 4);
interval = EXTRACT_16BITS(message + 6);
rc = network_address(message[2], message + 8, len - 6, address);
if(rc < 0) { ND_PRINT((ndo, "%s", tstr)); break; }
ND_PRINT((ndo, "%s txcost %u interval %s",
format_address(ndo, address), txcost, format_interval(interval)));
/* Extra data. */
if((u_int)rc < len - 6)
subtlvs_print(ndo, message + 8 + rc, message + 2 + len,
type);
}
}
break;
case MESSAGE_ROUTER_ID: {
if (!ndo->ndo_vflag)
ND_PRINT((ndo, " router-id"));
else {
ND_PRINT((ndo, "\n\tRouter Id"));
if(len < 10) goto corrupt;
ND_PRINT((ndo, " %s", format_id(message + 4)));
}
}
break;
case MESSAGE_NH: {
if (!ndo->ndo_vflag)
ND_PRINT((ndo, " nh"));
else {
int rc;
u_char nh[16];
ND_PRINT((ndo, "\n\tNext Hop"));
if(len < 2) goto corrupt;
rc = network_address(message[2], message + 4, len - 2, nh);
if(rc < 0) goto corrupt;
ND_PRINT((ndo, " %s", format_address(ndo, nh)));
}
}
break;
case MESSAGE_UPDATE: {
if (!ndo->ndo_vflag) {
ND_PRINT((ndo, " update"));
if(len < 1)
ND_PRINT((ndo, "/truncated"));
else
ND_PRINT((ndo, "%s%s%s",
(message[3] & 0x80) ? "/prefix": "",
(message[3] & 0x40) ? "/id" : "",
(message[3] & 0x3f) ? "/unknown" : ""));
} else {
u_short interval, seqno, metric;
u_char plen;
int rc;
u_char prefix[16];
ND_PRINT((ndo, "\n\tUpdate"));
if(len < 10) goto corrupt;
plen = message[4] + (message[2] == 1 ? 96 : 0);
rc = network_prefix(message[2], message[4], message[5],
message + 12,
message[2] == 1 ? v4_prefix : v6_prefix,
len - 10, prefix);
if(rc < 0) goto corrupt;
interval = EXTRACT_16BITS(message + 6);
seqno = EXTRACT_16BITS(message + 8);
metric = EXTRACT_16BITS(message + 10);
ND_PRINT((ndo, "%s%s%s %s metric %u seqno %u interval %s",
(message[3] & 0x80) ? "/prefix": "",
(message[3] & 0x40) ? "/id" : "",
(message[3] & 0x3f) ? "/unknown" : "",
format_prefix(ndo, prefix, plen),
metric, seqno, format_interval_update(interval)));
if(message[3] & 0x80) {
if(message[2] == 1)
memcpy(v4_prefix, prefix, 16);
else
memcpy(v6_prefix, prefix, 16);
}
/* extra data? */
if((u_int)rc < len - 10)
subtlvs_print(ndo, message + 12 + rc, message + 2 + len, type);
}
}
break;
case MESSAGE_REQUEST: {
if (!ndo->ndo_vflag)
ND_PRINT((ndo, " request"));
else {
int rc;
u_char prefix[16], plen;
ND_PRINT((ndo, "\n\tRequest "));
if(len < 2) goto corrupt;
plen = message[3] + (message[2] == 1 ? 96 : 0);
rc = network_prefix(message[2], message[3], 0,
message + 4, NULL, len - 2, prefix);
if(rc < 0) goto corrupt;
ND_PRINT((ndo, "for %s",
message[2] == 0 ? "any" : format_prefix(ndo, prefix, plen)));
}
}
break;
case MESSAGE_MH_REQUEST : {
if (!ndo->ndo_vflag)
ND_PRINT((ndo, " mh-request"));
else {
int rc;
u_short seqno;
u_char prefix[16], plen;
ND_PRINT((ndo, "\n\tMH-Request "));
if(len < 14) goto corrupt;
seqno = EXTRACT_16BITS(message + 4);
rc = network_prefix(message[2], message[3], 0,
message + 16, NULL, len - 14, prefix);
if(rc < 0) goto corrupt;
plen = message[3] + (message[2] == 1 ? 96 : 0);
ND_PRINT((ndo, "(%u hops) for %s seqno %u id %s",
message[6], format_prefix(ndo, prefix, plen),
seqno, format_id(message + 8)));
}
}
break;
case MESSAGE_TSPC :
if (!ndo->ndo_vflag)
ND_PRINT((ndo, " tspc"));
else {
ND_PRINT((ndo, "\n\tTS/PC "));
if(len < 6) goto corrupt;
ND_PRINT((ndo, "timestamp %u packetcounter %u", EXTRACT_32BITS (message + 4),
EXTRACT_16BITS(message + 2)));
}
break;
case MESSAGE_HMAC : {
if (!ndo->ndo_vflag)
ND_PRINT((ndo, " hmac"));
else {
unsigned j;
ND_PRINT((ndo, "\n\tHMAC "));
if(len < 18) goto corrupt;
ND_PRINT((ndo, "key-id %u digest-%u ", EXTRACT_16BITS(message + 2), len - 2));
for (j = 0; j < len - 2; j++)
ND_PRINT((ndo, "%02X", message[4 + j]));
}
}
break;
case MESSAGE_UPDATE_SRC_SPECIFIC : {
if(!ndo->ndo_vflag) {
ND_PRINT((ndo, " ss-update"));
} else {
u_char prefix[16], src_prefix[16];
u_short interval, seqno, metric;
u_char ae, plen, src_plen, omitted;
int rc;
int parsed_len = 10;
ND_PRINT((ndo, "\n\tSS-Update"));
if(len < 10) goto corrupt;
ae = message[2];
src_plen = message[3];
plen = message[4];
omitted = message[5];
interval = EXTRACT_16BITS(message + 6);
seqno = EXTRACT_16BITS(message + 8);
metric = EXTRACT_16BITS(message + 10);
rc = network_prefix(ae, plen, omitted, message + 2 + parsed_len,
ae == 1 ? v4_prefix : v6_prefix,
len - parsed_len, prefix);
if(rc < 0) goto corrupt;
if(ae == 1)
plen += 96;
parsed_len += rc;
rc = network_prefix(ae, src_plen, 0, message + 2 + parsed_len,
NULL, len - parsed_len, src_prefix);
if(rc < 0) goto corrupt;
if(ae == 1)
src_plen += 96;
parsed_len += rc;
ND_PRINT((ndo, " %s from", format_prefix(ndo, prefix, plen)));
ND_PRINT((ndo, " %s metric %u seqno %u interval %s",
format_prefix(ndo, src_prefix, src_plen),
metric, seqno, format_interval_update(interval)));
/* extra data? */
if((u_int)parsed_len < len)
subtlvs_print(ndo, message + 2 + parsed_len,
message + 2 + len, type);
}
}
break;
case MESSAGE_REQUEST_SRC_SPECIFIC : {
if(!ndo->ndo_vflag)
ND_PRINT((ndo, " ss-request"));
else {
int rc, parsed_len = 3;
u_char ae, plen, src_plen, prefix[16], src_prefix[16];
ND_PRINT((ndo, "\n\tSS-Request "));
if(len < 3) goto corrupt;
ae = message[2];
plen = message[3];
src_plen = message[4];
rc = network_prefix(ae, plen, 0, message + 2 + parsed_len,
NULL, len - parsed_len, prefix);
if(rc < 0) goto corrupt;
if(ae == 1)
plen += 96;
parsed_len += rc;
rc = network_prefix(ae, src_plen, 0, message + 2 + parsed_len,
NULL, len - parsed_len, src_prefix);
if(rc < 0) goto corrupt;
if(ae == 1)
src_plen += 96;
parsed_len += rc;
if(ae == 0) {
ND_PRINT((ndo, "for any"));
} else {
ND_PRINT((ndo, "for (%s, ", format_prefix(ndo, prefix, plen)));
ND_PRINT((ndo, "%s)", format_prefix(ndo, src_prefix, src_plen)));
}
}
}
break;
case MESSAGE_MH_REQUEST_SRC_SPECIFIC : {
if(!ndo->ndo_vflag)
ND_PRINT((ndo, " ss-mh-request"));
else {
int rc, parsed_len = 14;
u_short seqno;
u_char ae, plen, src_plen, prefix[16], src_prefix[16], hopc;
const u_char *router_id = NULL;
ND_PRINT((ndo, "\n\tSS-MH-Request "));
if(len < 14) goto corrupt;
ae = message[2];
plen = message[3];
seqno = EXTRACT_16BITS(message + 4);
hopc = message[6];
src_plen = message[7];
router_id = message + 8;
rc = network_prefix(ae, plen, 0, message + 2 + parsed_len,
NULL, len - parsed_len, prefix);
if(rc < 0) goto corrupt;
if(ae == 1)
plen += 96;
parsed_len += rc;
rc = network_prefix(ae, src_plen, 0, message + 2 + parsed_len,
NULL, len - parsed_len, src_prefix);
if(rc < 0) goto corrupt;
if(ae == 1)
src_plen += 96;
ND_PRINT((ndo, "(%u hops) for (%s, ",
hopc, format_prefix(ndo, prefix, plen)));
ND_PRINT((ndo, "%s) seqno %u id %s",
format_prefix(ndo, src_prefix, src_plen),
seqno, format_id(router_id)));
}
}
break;
default:
if (!ndo->ndo_vflag)
ND_PRINT((ndo, " unknown"));
else
ND_PRINT((ndo, "\n\tUnknown message type %d", type));
}
i += len + 2;
}
return;
trunc:
ND_PRINT((ndo, " %s", tstr));
return;
corrupt:
ND_PRINT((ndo, " (corrupt)"));
return;
}
