#include <stdio.h>
#include <string.h>
+#include "netdissect.h"
#include "addrtoname.h"
-#include "interface.h"
#include "extract.h"
-static void babel_print_v2(const u_char *cp, u_int length);
+static const char tstr[] = "[|babel]";
+static const char istr[] = " (invalid)";
+
+static void babel_print_v2(netdissect_options *, const u_char *cp, u_int length);
void
-babel_print(const u_char *cp, u_int length) {
- printf("babel");
+babel_print(netdissect_options *ndo,
+ const u_char *cp, u_int length)
+{
+ ND_PRINT((ndo, "babel"));
- TCHECK2(*cp, 4);
+ ND_TCHECK2(*cp, 4);
if(cp[0] != 42) {
- printf(" malformed header");
+ ND_PRINT((ndo, " invalid header"));
return;
} else {
- printf(" %d", cp[1]);
+ ND_PRINT((ndo, " %d", cp[1]));
}
switch(cp[1]) {
case 2:
- babel_print_v2(cp,length);
+ babel_print_v2(ndo, cp, length);
break;
default:
- printf(" unknown version");
+ ND_PRINT((ndo, " unknown version"));
break;
}
return;
trunc:
- printf(" [|babel]");
+ ND_PRINT((ndo, " %s", tstr));
return;
}
+/* TLVs */
#define MESSAGE_PAD1 0
#define MESSAGE_PADN 1
#define MESSAGE_ACK_REQ 2
#define MESSAGE_MH_REQUEST 10
#define MESSAGE_TSPC 11
#define MESSAGE_HMAC 12
+#define MESSAGE_UPDATE_SRC_SPECIFIC 13
+#define MESSAGE_REQUEST_SRC_SPECIFIC 14
+#define MESSAGE_MH_REQUEST_SRC_SPECIFIC 15
+
+/* sub-TLVs */
+#define MESSAGE_SUB_PAD1 0
+#define MESSAGE_SUB_PADN 1
+#define MESSAGE_SUB_DIVERSITY 2
+#define MESSAGE_SUB_TIMESTAMP 3
+
+/* Diversity sub-TLV channel codes */
+static const struct tok diversity_str[] = {
+ { 0, "reserved" },
+ { 255, "all" },
+ { 0, NULL }
+};
static const char *
format_id(const u_char *id)
{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0xFF, 0xFF, 0, 0, 0, 0 };
static const char *
-format_prefix(const u_char *prefix, unsigned char plen)
+format_prefix(netdissect_options *ndo, const u_char *prefix, unsigned char plen)
{
static char buf[50];
if(plen >= 96 && memcmp(prefix, v4prefix, 12) == 0)
- snprintf(buf, 50, "%s/%u", ipaddr_string(prefix + 12), plen - 96);
+ snprintf(buf, 50, "%s/%u", ipaddr_string(ndo, prefix + 12), plen - 96);
else
- snprintf(buf, 50, "%s/%u", ip6addr_string(prefix), plen);
+#ifdef INET6
+ snprintf(buf, 50, "%s/%u", ip6addr_string(ndo, prefix), plen);
+#else
+ snprintf(buf, 50, "IPv6 addresses not supported");
+#endif
buf[49] = '\0';
return buf;
}
static const char *
-format_address(const u_char *prefix)
+format_address(netdissect_options *ndo, const u_char *prefix)
{
if(memcmp(prefix, v4prefix, 12) == 0)
- return ipaddr_string(prefix + 12);
+ return ipaddr_string(ndo, prefix + 12);
else
- return ip6addr_string(prefix);
+#ifdef INET6
+ return ip6addr_string(ndo, prefix);
+#else
+ return "IPv6 addresses not supported";
+#endif
+}
+
+static const char *
+format_interval(const uint16_t i)
+{
+ static char buf[sizeof("000.00s")];
+
+ if (i == 0)
+ return "0.0s (bogus)";
+ snprintf(buf, sizeof(buf), "%u.%02us", i / 100, i % 100);
+ return buf;
+}
+
+static const char *
+format_interval_update(const uint16_t i)
+{
+ return i == 0xFFFF ? "infinity" : format_interval(i);
+}
+
+static const char *
+format_timestamp(const uint32_t i)
+{
+ static char buf[sizeof("0000.000000s")];
+ snprintf(buf, sizeof(buf), "%u.%06us", i / 1000000, i % 1000000);
+ return buf;
}
+/* Return number of octets consumed from the input buffer (not the prefix length
+ * in bytes), or -1 for encoding error. */
static int
network_prefix(int ae, int plen, unsigned int omitted,
const unsigned char *p, const unsigned char *dp,
{
unsigned pb;
unsigned char prefix[16];
+ int consumed = 0;
if(plen >= 0)
pb = (plen + 7) / 8;
if (dp == NULL) return -1;
memcpy(prefix, dp, 12 + omitted);
}
- if(pb > omitted) memcpy(prefix + 12 + omitted, p, pb - omitted);
+ if(pb > omitted) {
+ memcpy(prefix + 12 + omitted, p, pb - omitted);
+ consumed = pb - omitted;
+ }
break;
case 2:
if(omitted > 16 || (pb > omitted && len < pb - omitted))
if (dp == NULL) return -1;
memcpy(prefix, dp, omitted);
}
- if(pb > omitted) memcpy(prefix + omitted, p, pb - omitted);
+ if(pb > omitted) {
+ memcpy(prefix + omitted, p, pb - omitted);
+ consumed = pb - omitted;
+ }
break;
case 3:
if(pb > 8 && len < pb - 8) return -1;
prefix[0] = 0xfe;
prefix[1] = 0x80;
- if(pb > 8) memcpy(prefix + 8, p, pb - 8);
+ if(pb > 8) {
+ memcpy(prefix + 8, p, pb - 8);
+ consumed = pb - 8;
+ }
break;
default:
return -1;
}
memcpy(p_r, prefix, 16);
- return 1;
+ return consumed;
}
static int
return network_prefix(ae, -1, 0, a, NULL, len, a_r);
}
+/*
+ * Sub-TLVs consume the "extra data" of Babel TLVs (see Section 4.3 of RFC6126),
+ * their encoding is similar to the encoding of TLVs, but the type namespace is
+ * different:
+ *
+ * o Type 0 stands for Pad1 sub-TLV with the same encoding as the Pad1 TLV.
+ * o Type 1 stands for PadN sub-TLV with the same encoding as the PadN TLV.
+ * o Type 2 stands for Diversity sub-TLV, which propagates diversity routing
+ * data. Its body is a variable-length sequence of 8-bit unsigned integers,
+ * each representing per-hop number of interferring radio channel for the
+ * prefix. Channel 0 is invalid and must not be used in the sub-TLV, channel
+ * 255 interferes with any other channel.
+ * o Type 3 stands for Timestamp sub-TLV, used to compute RTT between
+ * neighbours. In the case of a Hello TLV, the body stores a 32-bits
+ * timestamp, while in the case of a IHU TLV, two 32-bits timestamps are
+ * stored.
+ *
+ * Sub-TLV types 0 and 1 are valid for any TLV type, whether sub-TLV type 2 is
+ * only valid for TLV type 8 (Update). Note that within an Update TLV a missing
+ * Diversity sub-TLV is not the same as a Diversity sub-TLV with an empty body.
+ * The former would mean a lack of any claims about the interference, and the
+ * latter would state that interference is definitely absent.
+ * A type 3 sub-TLV is valid both for Hello and IHU TLVs, though the exact
+ * semantic of the sub-TLV is different in each case.
+ */
+static void
+subtlvs_print(netdissect_options *ndo,
+ const u_char *cp, const u_char *ep, const uint8_t tlv_type)
+{
+ uint8_t subtype, sublen;
+ const char *sep;
+ uint32_t t1, t2;
+
+ while (cp < ep) {
+ subtype = *cp++;
+ if(subtype == MESSAGE_SUB_PAD1) {
+ ND_PRINT((ndo, " sub-pad1"));
+ continue;
+ }
+ if(cp == ep)
+ goto invalid;
+ sublen = *cp++;
+ if(cp + sublen > ep)
+ goto invalid;
+
+ switch(subtype) {
+ case MESSAGE_SUB_PADN:
+ ND_PRINT((ndo, " sub-padn"));
+ cp += sublen;
+ break;
+ case MESSAGE_SUB_DIVERSITY:
+ ND_PRINT((ndo, " sub-diversity"));
+ if (sublen == 0) {
+ ND_PRINT((ndo, " empty"));
+ break;
+ }
+ sep = " ";
+ while(sublen--) {
+ ND_PRINT((ndo, "%s%s", sep, tok2str(diversity_str, "%u", *cp++)));
+ sep = "-";
+ }
+ if(tlv_type != MESSAGE_UPDATE &&
+ tlv_type != MESSAGE_UPDATE_SRC_SPECIFIC)
+ ND_PRINT((ndo, " (bogus)"));
+ break;
+ case MESSAGE_SUB_TIMESTAMP:
+ ND_PRINT((ndo, " sub-timestamp"));
+ if(tlv_type == MESSAGE_HELLO) {
+ if(sublen < 4)
+ goto invalid;
+ t1 = EXTRACT_32BITS(cp);
+ ND_PRINT((ndo, " %s", format_timestamp(t1)));
+ } else if(tlv_type == MESSAGE_IHU) {
+ if(sublen < 8)
+ goto invalid;
+ t1 = EXTRACT_32BITS(cp);
+ ND_PRINT((ndo, " %s", format_timestamp(t1)));
+ t2 = EXTRACT_32BITS(cp + 4);
+ ND_PRINT((ndo, "|%s", format_timestamp(t2)));
+ } else
+ ND_PRINT((ndo, " (bogus)"));
+ cp += sublen;
+ break;
+ default:
+ ND_PRINT((ndo, " sub-unknown-0x%02x", subtype));
+ cp += sublen;
+ } /* switch */
+ } /* while */
+ return;
+
+ invalid:
+ ND_PRINT((ndo, "%s", istr));
+}
+
#define ICHECK(i, l) \
- if ((i) + (l) > bodylen || (i) + (l) > length) goto corrupt;
+ if ((i) + (l) > bodylen || (i) + (l) > length) goto invalid;
static void
-babel_print_v2(const u_char *cp, u_int length) {
+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};
- TCHECK2(*cp, 4);
+ ND_TCHECK2(*cp, 4);
if (length < 4)
- goto corrupt;
+ goto invalid;
bodylen = EXTRACT_16BITS(cp + 2);
- printf(" (%u)", bodylen);
+ ND_PRINT((ndo, " (%u)", bodylen));
/* Process the TLVs in the body */
i = 0;
u_int type, len;
message = cp + 4 + i;
- TCHECK2(*message, 2);
+
+ 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);
- type = message[0];
len = message[1];
- TCHECK2(*message, 2 + len);
+ ND_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");
+ if (!ndo->ndo_vflag)
+ ND_PRINT((ndo, " padN"));
else
- printf("\n\tPad %d", len + 2);
+ ND_PRINT((ndo, "\n\tPad %d", len + 2));
}
break;
case MESSAGE_ACK_REQ: {
u_short nonce, interval;
- if(!vflag)
- printf(" ack-req");
+ if (!ndo->ndo_vflag)
+ ND_PRINT((ndo, " ack-req"));
else {
- printf("\n\tAcknowledgment Request ");
- if(len < 6) goto corrupt;
+ ND_PRINT((ndo, "\n\tAcknowledgment Request "));
+ if(len < 6) goto invalid;
nonce = EXTRACT_16BITS(message + 4);
interval = EXTRACT_16BITS(message + 6);
- printf("%04x %d", nonce, interval);
+ ND_PRINT((ndo, "%04x %s", nonce, format_interval(interval)));
}
}
break;
case MESSAGE_ACK: {
u_short nonce;
- if(!vflag)
- printf(" ack");
+ if (!ndo->ndo_vflag)
+ ND_PRINT((ndo, " ack"));
else {
- printf("\n\tAcknowledgment ");
- if(len < 2) goto corrupt;
+ ND_PRINT((ndo, "\n\tAcknowledgment "));
+ if(len < 2) goto invalid;
nonce = EXTRACT_16BITS(message + 2);
- printf("%04x", nonce);
+ ND_PRINT((ndo, "%04x", nonce));
}
}
break;
case MESSAGE_HELLO: {
u_short seqno, interval;
- if(!vflag)
- printf(" hello");
+ if (!ndo->ndo_vflag)
+ ND_PRINT((ndo, " hello"));
else {
- printf("\n\tHello ");
- if(len < 6) goto corrupt;
+ ND_PRINT((ndo, "\n\tHello "));
+ if(len < 6) goto invalid;
seqno = EXTRACT_16BITS(message + 4);
interval = EXTRACT_16BITS(message + 6);
- printf("seqno %u interval %u", seqno, interval);
+ 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(!vflag)
- printf(" ihu");
+ if (!ndo->ndo_vflag)
+ ND_PRINT((ndo, " ihu"));
else {
u_char address[16];
int rc;
- printf("\n\tIHU ");
- if(len < 6) goto corrupt;
+ ND_PRINT((ndo, "\n\tIHU "));
+ if(len < 6) goto invalid;
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);
+ 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(!vflag)
- printf(" router-id");
+ if (!ndo->ndo_vflag)
+ ND_PRINT((ndo, " router-id"));
else {
- printf("\n\tRouter Id");
- if(len < 10) goto corrupt;
- printf(" %s", format_id(message + 4));
+ ND_PRINT((ndo, "\n\tRouter Id"));
+ if(len < 10) goto invalid;
+ ND_PRINT((ndo, " %s", format_id(message + 4)));
}
}
break;
case MESSAGE_NH: {
- if(!vflag)
- printf(" nh");
+ if (!ndo->ndo_vflag)
+ ND_PRINT((ndo, " nh"));
else {
int rc;
u_char nh[16];
- printf("\n\tNext Hop");
- if(len < 2) goto corrupt;
+ ND_PRINT((ndo, "\n\tNext Hop"));
+ if(len < 2) goto invalid;
rc = network_address(message[2], message + 4, len - 2, nh);
- if(rc < 0) goto corrupt;
- printf(" %s", format_address(nh));
+ if(rc < 0) goto invalid;
+ ND_PRINT((ndo, " %s", format_address(ndo, nh)));
}
}
break;
case MESSAGE_UPDATE: {
- if(!vflag) {
- printf(" update");
+ if (!ndo->ndo_vflag) {
+ ND_PRINT((ndo, " update"));
if(len < 1)
- printf("/truncated");
+ ND_PRINT((ndo, "/truncated"));
else
- printf("%s%s%s",
+ ND_PRINT((ndo, "%s%s%s",
(message[3] & 0x80) ? "/prefix": "",
(message[3] & 0x40) ? "/id" : "",
- (message[3] & 0x3f) ? "/unknown" : "");
+ (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;
+ ND_PRINT((ndo, "\n\tUpdate"));
+ if(len < 10) goto invalid;
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;
+ if(rc < 0) goto invalid;
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",
+ 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(prefix, plen),
- metric, seqno, interval);
+ 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(!vflag)
- printf(" request");
+ if (!ndo->ndo_vflag)
+ ND_PRINT((ndo, " request"));
else {
int rc;
u_char prefix[16], plen;
- printf("\n\tRequest ");
- if(len < 2) goto corrupt;
+ ND_PRINT((ndo, "\n\tRequest "));
+ if(len < 2) goto invalid;
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));
+ if(rc < 0) goto invalid;
+ ND_PRINT((ndo, "for %s",
+ message[2] == 0 ? "any" : format_prefix(ndo, prefix, plen)));
}
}
break;
case MESSAGE_MH_REQUEST : {
- if(!vflag)
- printf(" mh-request");
+ if (!ndo->ndo_vflag)
+ ND_PRINT((ndo, " mh-request"));
else {
int rc;
u_short seqno;
u_char prefix[16], plen;
- printf("\n\tMH-Request ");
- if(len < 14) goto corrupt;
+ ND_PRINT((ndo, "\n\tMH-Request "));
+ if(len < 14) goto invalid;
seqno = EXTRACT_16BITS(message + 4);
rc = network_prefix(message[2], message[3], 0,
message + 16, NULL, len - 14, prefix);
- if(rc < 0) goto corrupt;
+ if(rc < 0) goto invalid;
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));
+ 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(!vflag)
- printf(" tspc");
+ if (!ndo->ndo_vflag)
+ ND_PRINT((ndo, " tspc"));
else {
- printf("\n\tTS/PC ");
- if(len < 6) goto corrupt;
- printf("timestamp %u packetcounter %u", EXTRACT_32BITS (message + 4),
- EXTRACT_16BITS(message + 2));
+ ND_PRINT((ndo, "\n\tTS/PC "));
+ if(len < 6) goto invalid;
+ ND_PRINT((ndo, "timestamp %u packetcounter %u", EXTRACT_32BITS (message + 4),
+ EXTRACT_16BITS(message + 2)));
}
break;
case MESSAGE_HMAC : {
- if(!vflag)
- printf(" hmac");
+ if (!ndo->ndo_vflag)
+ ND_PRINT((ndo, " hmac"));
else {
unsigned j;
- printf("\n\tHMAC ");
- if(len < 18) goto corrupt;
- printf("key-id %u digest-%u ", EXTRACT_16BITS(message + 2), len - 2);
+ ND_PRINT((ndo, "\n\tHMAC "));
+ if(len < 18) goto invalid;
+ ND_PRINT((ndo, "key-id %u digest-%u ", EXTRACT_16BITS(message + 2), len - 2));
for (j = 0; j < len - 2; j++)
- printf ("%02X", message[4 + 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 invalid;
+ 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 invalid;
+ 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 invalid;
+ 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 invalid;
+ 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 invalid;
+ 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 invalid;
+ 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 invalid;
+ 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 invalid;
+ 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 invalid;
+ 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(!vflag)
- printf(" unknown");
+ if (!ndo->ndo_vflag)
+ ND_PRINT((ndo, " unknown"));
else
- printf("\n\tUnknown message type %d", type);
+ ND_PRINT((ndo, "\n\tUnknown message type %d", type));
}
i += len + 2;
}
return;
trunc:
- printf(" [|babel]");
+ ND_PRINT((ndo, " %s", tstr));
return;
- corrupt:
- printf(" (corrupt)");
+ invalid:
+ ND_PRINT((ndo, "%s", istr));
return;
}
projects / tcpdump / blobdiff