*/
/* \summary: Babel Routing Protocol printer */
+/* Specifications:
+ *
+ * RFC 6126
+ * RFC 7298
+ * RFC 7557
+ * draft-ietf-babel-rfc6126bis-17
+ * draft-ietf-babel-hmac-10
+ * draft-ietf-babel-source-specific-0
+ */
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
+#include <config.h>
-#include <netdissect-stdinc.h>
+#include "netdissect-stdinc.h"
#include <stdio.h>
#include <string.h>
#include "addrtoname.h"
#include "extract.h"
-static const char tstr[] = "[|babel]";
-
static void babel_print_v2(netdissect_options *, const u_char *cp, u_int length);
void
babel_print(netdissect_options *ndo,
const u_char *cp, u_int length)
{
- ND_PRINT((ndo, "babel"));
+ ndo->ndo_protocol = "babel";
+ nd_print_protocol(ndo);
- ND_TCHECK2(*cp, 4);
+ ND_TCHECK_4(cp);
- if(cp[0] != 42) {
- ND_PRINT((ndo, " invalid header"));
+ if(GET_U_1(cp) != 42) {
+ ND_PRINT(" invalid header");
return;
} else {
- ND_PRINT((ndo, " %d", cp[1]));
+ ND_PRINT(" %u", GET_U_1(cp + 1));
}
- switch(cp[1]) {
+ switch(GET_U_1(cp + 1)) {
case 2:
babel_print_v2(ndo, cp, length);
break;
default:
- ND_PRINT((ndo, " unknown version"));
+ ND_PRINT(" unknown version");
break;
}
return;
trunc:
- ND_PRINT((ndo, " %s", tstr));
- return;
+ nd_print_trunc(ndo);
}
/* TLVs */
#define MESSAGE_ROUTER_ID 6
#define MESSAGE_NH 7
#define MESSAGE_UPDATE 8
-#define MESSAGE_REQUEST 9
-#define MESSAGE_MH_REQUEST 10
+#define MESSAGE_ROUTE_REQUEST 9
+#define MESSAGE_SEQNO_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
+#define MESSAGE_UPDATE_SRC_SPECIFIC 13 /* last appearance in draft-boutier-babel-source-specific-01 */
+#define MESSAGE_REQUEST_SRC_SPECIFIC 14 /* idem */
+#define MESSAGE_MH_REQUEST_SRC_SPECIFIC 15 /* idem */
+#define MESSAGE_MAC 16
+#define MESSAGE_PC 17
+#define MESSAGE_CHALLENGE_REQUEST 18
+#define MESSAGE_CHALLENGE_REPLY 19
/* sub-TLVs */
#define MESSAGE_SUB_PAD1 0
#define MESSAGE_SUB_DIVERSITY 2
#define MESSAGE_SUB_TIMESTAMP 3
+/* "Mandatory" bit in sub-TLV types */
+#define MANDATORY_MASK 0x80
+
+/* Flags for the Hello TLV */
+#define UNICAST_MASK 0x8000
+
/* Diversity sub-TLV channel codes */
static const struct tok diversity_str[] = {
{ 0, "reserved" },
};
static const char *
-format_id(const u_char *id)
+format_id(netdissect_options *ndo, const u_char *id)
{
static char buf[25];
snprintf(buf, 25, "%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x",
- id[0], id[1], id[2], id[3], id[4], id[5], id[6], id[7]);
+ GET_U_1(id), GET_U_1(id + 1), GET_U_1(id + 2),
+ GET_U_1(id + 3), GET_U_1(id + 4), GET_U_1(id + 5),
+ GET_U_1(id + 6), GET_U_1(id + 7));
buf[24] = '\0';
return buf;
}
format_prefix(netdissect_options *ndo, const u_char *prefix, unsigned char plen)
{
static char buf[50];
+
+ /*
+ * prefix points to a buffer on the stack into which the prefix has
+ * been placed, so we can't use GET_IPADDR_STRING() or
+ * GET_IP6ADDR_STRING() on it.
+ */
if(plen >= 96 && memcmp(prefix, v4prefix, 12) == 0)
snprintf(buf, 50, "%s/%u", ipaddr_string(ndo, prefix + 12), plen - 96);
else
static const char *
format_address(netdissect_options *ndo, const u_char *prefix)
{
+ /*
+ * prefix points to a buffer on the stack into which the prefix has
+ * been placed, so we can't use GET_IPADDR_STRING() or
+ * GET_IP6ADDR_STRING() on it.
+ */
if(memcmp(prefix, v4prefix, 12) == 0)
return ipaddr_string(ndo, prefix + 12);
else
* 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
+ * each representing per-hop number of interfering 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
uint32_t t1, t2;
while (cp < ep) {
- subtype = *cp++;
+ subtype = GET_U_1(cp);
+ cp++;
if(subtype == MESSAGE_SUB_PAD1) {
- ND_PRINT((ndo, " sub-pad1"));
+ ND_PRINT(" sub-pad1");
continue;
}
+ if ((MANDATORY_MASK & subtype) != 0)
+ ND_PRINT(" (M)");
if(cp == ep)
goto invalid;
- sublen = *cp++;
+ sublen = GET_U_1(cp);
+ cp++;
if(cp + sublen > ep)
goto invalid;
switch(subtype) {
case MESSAGE_SUB_PADN:
- ND_PRINT((ndo, " sub-padn"));
+ ND_PRINT(" sub-padn");
cp += sublen;
break;
case MESSAGE_SUB_DIVERSITY:
- ND_PRINT((ndo, " sub-diversity"));
+ ND_PRINT(" sub-diversity");
if (sublen == 0) {
- ND_PRINT((ndo, " empty"));
+ ND_PRINT(" empty");
break;
}
sep = " ";
- while(sublen--) {
- ND_PRINT((ndo, "%s%s", sep, tok2str(diversity_str, "%u", *cp++)));
+ while (sublen) {
+ ND_PRINT("%s%s", sep,
+ tok2str(diversity_str, "%u", GET_U_1(cp)));
+ cp++;
sep = "-";
+ sublen--;
}
if(tlv_type != MESSAGE_UPDATE &&
tlv_type != MESSAGE_UPDATE_SRC_SPECIFIC)
- ND_PRINT((ndo, " (bogus)"));
+ ND_PRINT(" (bogus)");
break;
case MESSAGE_SUB_TIMESTAMP:
- ND_PRINT((ndo, " sub-timestamp"));
+ ND_PRINT(" sub-timestamp");
if(tlv_type == MESSAGE_HELLO) {
if(sublen < 4)
goto invalid;
- t1 = EXTRACT_32BITS(cp);
- ND_PRINT((ndo, " %s", format_timestamp(t1)));
+ t1 = GET_BE_U_4(cp);
+ ND_PRINT(" %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)));
+ t1 = GET_BE_U_4(cp);
+ ND_PRINT(" %s", format_timestamp(t1));
+ t2 = GET_BE_U_4(cp + 4);
+ ND_PRINT("|%s", format_timestamp(t2));
} else
- ND_PRINT((ndo, " (bogus)"));
+ ND_PRINT(" (bogus)");
cp += sublen;
break;
default:
- ND_PRINT((ndo, " sub-unknown-0x%02x", subtype));
+ ND_PRINT(" sub-unknown-0x%02x", subtype);
cp += sublen;
} /* switch */
} /* while */
return;
invalid:
- ND_PRINT((ndo, "%s", istr));
+ nd_print_invalid(ndo);
}
#define ICHECK(i, l) \
- if ((i) + (l) > bodylen || (i) + (l) > length) goto invalid;
+ if ((i) + (l) > tlvs_length || (i) + (l) > packet_length_remaining) \
+ goto invalid;
-static void
-babel_print_v2(netdissect_options *ndo,
- const u_char *cp, u_int length)
+static int
+babel_print_v2_tlvs(netdissect_options *ndo,
+ const u_char *cp, u_int tlvs_length,
+ u_int packet_length_remaining)
{
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 invalid;
- bodylen = EXTRACT_16BITS(cp + 2);
- ND_PRINT((ndo, " (%u)", bodylen));
-
- /* Process the TLVs in the body */
i = 0;
- while(i < bodylen) {
+ while(i < tlvs_length) {
const u_char *message;
- u_int type, len;
+ uint8_t type;
+ u_int len;
- message = cp + 4 + i;
+ message = cp + i;
- ND_TCHECK2(*message, 1);
- if((type = message[0]) == MESSAGE_PAD1) {
- ND_PRINT((ndo, ndo->ndo_vflag ? "\n\tPad 1" : " pad1"));
+ ICHECK(i, 1);
+ if((type = GET_U_1(message)) == MESSAGE_PAD1) {
+ ND_PRINT(ndo->ndo_vflag ? "\n\tPad 1" : " pad1");
i += 1;
continue;
}
- ND_TCHECK2(*message, 2);
ICHECK(i, 2);
- len = message[1];
+ ND_TCHECK_2(message);
+ len = GET_U_1(message + 1);
- ND_TCHECK2(*message, 2 + len);
ICHECK(i, 2 + len);
+ ND_TCHECK_LEN(message, 2 + len);
switch(type) {
case MESSAGE_PADN: {
if (!ndo->ndo_vflag)
- ND_PRINT((ndo, " padN"));
+ ND_PRINT(" padN");
else
- ND_PRINT((ndo, "\n\tPad %d", len + 2));
+ ND_PRINT("\n\tPad %u", len + 2);
}
break;
case MESSAGE_ACK_REQ: {
u_short nonce, interval;
if (!ndo->ndo_vflag)
- ND_PRINT((ndo, " ack-req"));
+ ND_PRINT(" ack-req");
else {
- ND_PRINT((ndo, "\n\tAcknowledgment Request "));
+ ND_PRINT("\n\tAcknowledgment Request ");
if(len < 6) goto invalid;
- nonce = EXTRACT_16BITS(message + 4);
- interval = EXTRACT_16BITS(message + 6);
- ND_PRINT((ndo, "%04x %s", nonce, format_interval(interval)));
+ nonce = GET_BE_U_2(message + 4);
+ interval = GET_BE_U_2(message + 6);
+ ND_PRINT("%04x %s", nonce, format_interval(interval));
}
}
break;
case MESSAGE_ACK: {
u_short nonce;
if (!ndo->ndo_vflag)
- ND_PRINT((ndo, " ack"));
+ ND_PRINT(" ack");
else {
- ND_PRINT((ndo, "\n\tAcknowledgment "));
+ ND_PRINT("\n\tAcknowledgment ");
if(len < 2) goto invalid;
- nonce = EXTRACT_16BITS(message + 2);
- ND_PRINT((ndo, "%04x", nonce));
+ nonce = GET_BE_U_2(message + 2);
+ ND_PRINT("%04x", nonce);
}
}
break;
case MESSAGE_HELLO: {
- u_short seqno, interval;
+ u_short seqno, interval, unicast;
if (!ndo->ndo_vflag)
- ND_PRINT((ndo, " hello"));
+ ND_PRINT(" hello");
else {
- ND_PRINT((ndo, "\n\tHello "));
+ ND_PRINT("\n\tHello ");
if(len < 6) goto invalid;
- seqno = EXTRACT_16BITS(message + 4);
- interval = EXTRACT_16BITS(message + 6);
- ND_PRINT((ndo, "seqno %u interval %s", seqno, format_interval(interval)));
+ unicast = (GET_BE_U_2(message + 2) & UNICAST_MASK);
+ seqno = GET_BE_U_2(message + 4);
+ interval = GET_BE_U_2(message + 6);
+ if(unicast)
+ ND_PRINT("(Unicast) ");
+ ND_PRINT("seqno %u ", seqno);
+ if(interval!=0)
+ ND_PRINT("interval %s", format_interval(interval));
+ else
+ ND_PRINT("unscheduled");
/* Extra data. */
if(len > 6)
subtlvs_print(ndo, message + 8, message + 2 + len, type);
break;
case MESSAGE_IHU: {
- unsigned short txcost, interval;
+ unsigned short rxcost, interval;
if (!ndo->ndo_vflag)
- ND_PRINT((ndo, " ihu"));
+ ND_PRINT(" ihu");
else {
u_char address[16];
+ u_char ae;
int rc;
- ND_PRINT((ndo, "\n\tIHU "));
+ ND_PRINT("\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) { ND_PRINT((ndo, "%s", tstr)); break; }
- ND_PRINT((ndo, "%s txcost %u interval %s",
- format_address(ndo, address), txcost, format_interval(interval)));
+ rxcost = GET_BE_U_2(message + 4);
+ interval = GET_BE_U_2(message + 6);
+ ae = GET_U_1(message + 2);
+ rc = network_address(ae, message + 8,
+ len - 6, address);
+ if(rc < 0) { nd_print_trunc(ndo); break; }
+ ND_PRINT("%s rxcost %u interval %s",
+ ae == 0 ? "any" : format_address(ndo, address),
+ rxcost, format_interval(interval));
/* Extra data. */
if((u_int)rc < len - 6)
subtlvs_print(ndo, message + 8 + rc, message + 2 + len,
case MESSAGE_ROUTER_ID: {
if (!ndo->ndo_vflag)
- ND_PRINT((ndo, " router-id"));
+ ND_PRINT(" router-id");
else {
- ND_PRINT((ndo, "\n\tRouter Id"));
+ ND_PRINT("\n\tRouter Id");
if(len < 10) goto invalid;
- ND_PRINT((ndo, " %s", format_id(message + 4)));
+ ND_PRINT(" %s", format_id(ndo, message + 4));
}
}
break;
case MESSAGE_NH: {
if (!ndo->ndo_vflag)
- ND_PRINT((ndo, " nh"));
+ ND_PRINT(" nh");
else {
int rc;
+ u_char ae;
u_char nh[16];
- ND_PRINT((ndo, "\n\tNext Hop"));
+ ND_PRINT("\n\tNext Hop");
if(len < 2) goto invalid;
- rc = network_address(message[2], message + 4, len - 2, nh);
+ ae = GET_U_1(message + 2);
+ rc = network_address(ae, message + 4,
+ len - 2, nh);
if(rc < 0) goto invalid;
- ND_PRINT((ndo, " %s", format_address(ndo, nh)));
+ ND_PRINT(" %s", ae == 0 ? "invalid AE 0" : format_address(ndo, nh));
}
}
break;
case MESSAGE_UPDATE: {
if (!ndo->ndo_vflag) {
- ND_PRINT((ndo, " update"));
- if(len < 1)
- ND_PRINT((ndo, "/truncated"));
+ ND_PRINT(" update");
+ if(len < 10)
+ goto invalid;
else
- ND_PRINT((ndo, "%s%s%s",
- (message[3] & 0x80) ? "/prefix": "",
- (message[3] & 0x40) ? "/id" : "",
- (message[3] & 0x3f) ? "/unknown" : ""));
+ ND_PRINT("%s%s%s",
+ (GET_U_1(message + 3) & 0x80) ? "/prefix": "",
+ (GET_U_1(message + 3) & 0x40) ? "/id" : "",
+ (GET_U_1(message + 3) & 0x3f) ? "/unknown" : "");
} else {
u_short interval, seqno, metric;
- u_char plen;
+ u_char ae, plen;
int rc;
u_char prefix[16];
- ND_PRINT((ndo, "\n\tUpdate"));
+ ND_PRINT("\n\tUpdate");
if(len < 10) goto invalid;
- plen = message[4] + (message[2] == 1 ? 96 : 0);
- rc = network_prefix(message[2], message[4], message[5],
+ ae = GET_U_1(message + 2);
+ plen = GET_U_1(message + 4) + (GET_U_1(message + 2) == 1 ? 96 : 0);
+ rc = network_prefix(ae,
+ GET_U_1(message + 4),
+ GET_U_1(message + 5),
message + 12,
- message[2] == 1 ? v4_prefix : v6_prefix,
+ GET_U_1(message + 2) == 1 ? v4_prefix : v6_prefix,
len - 10, prefix);
if(rc < 0) goto invalid;
- 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)
+ interval = GET_BE_U_2(message + 6);
+ seqno = GET_BE_U_2(message + 8);
+ metric = GET_BE_U_2(message + 10);
+ ND_PRINT("%s%s%s %s metric %u seqno %u interval %s",
+ (GET_U_1(message + 3) & 0x80) ? "/prefix": "",
+ (GET_U_1(message + 3) & 0x40) ? "/id" : "",
+ (GET_U_1(message + 3) & 0x3f) ? "/unknown" : "",
+ ae == 0 ? "any" : format_prefix(ndo, prefix, plen),
+ metric, seqno, format_interval_update(interval));
+ if(GET_U_1(message + 3) & 0x80) {
+ if(GET_U_1(message + 2) == 1)
memcpy(v4_prefix, prefix, 16);
else
memcpy(v6_prefix, prefix, 16);
}
break;
- case MESSAGE_REQUEST: {
+ case MESSAGE_ROUTE_REQUEST: {
if (!ndo->ndo_vflag)
- ND_PRINT((ndo, " request"));
+ ND_PRINT(" route-request");
else {
int rc;
- u_char prefix[16], plen;
- ND_PRINT((ndo, "\n\tRequest "));
+ u_char prefix[16], ae, plen;
+ ND_PRINT("\n\tRoute Request ");
if(len < 2) goto invalid;
- plen = message[3] + (message[2] == 1 ? 96 : 0);
- rc = network_prefix(message[2], message[3], 0,
+ ae = GET_U_1(message + 2);
+ plen = GET_U_1(message + 3) + (GET_U_1(message + 2) == 1 ? 96 : 0);
+ rc = network_prefix(ae,
+ GET_U_1(message + 3), 0,
message + 4, NULL, len - 2, prefix);
if(rc < 0) goto invalid;
- ND_PRINT((ndo, "for %s",
- message[2] == 0 ? "any" : format_prefix(ndo, prefix, plen)));
+ ND_PRINT("for %s",
+ ae == 0 ? "any" : format_prefix(ndo, prefix, plen));
}
}
break;
- case MESSAGE_MH_REQUEST : {
+ case MESSAGE_SEQNO_REQUEST : {
if (!ndo->ndo_vflag)
- ND_PRINT((ndo, " mh-request"));
+ ND_PRINT(" seqno-request");
else {
int rc;
u_short seqno;
- u_char prefix[16], plen;
- ND_PRINT((ndo, "\n\tMH-Request "));
+ u_char prefix[16], ae, plen;
+ ND_PRINT("\n\tSeqno Request ");
if(len < 14) goto invalid;
- seqno = EXTRACT_16BITS(message + 4);
- rc = network_prefix(message[2], message[3], 0,
+ ae = GET_U_1(message + 2);
+ seqno = GET_BE_U_2(message + 4);
+ rc = network_prefix(ae,
+ GET_U_1(message + 3), 0,
message + 16, NULL, len - 14, prefix);
if(rc < 0) goto invalid;
- 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)));
+ plen = GET_U_1(message + 3) + (GET_U_1(message + 2) == 1 ? 96 : 0);
+ ND_PRINT("(%u hops) for %s seqno %u id %s",
+ GET_U_1(message + 6),
+ ae == 0 ? "invalid AE 0" : format_prefix(ndo, prefix, plen),
+ seqno, format_id(ndo, message + 8));
}
}
break;
case MESSAGE_TSPC :
if (!ndo->ndo_vflag)
- ND_PRINT((ndo, " tspc"));
+ ND_PRINT(" tspc");
else {
- ND_PRINT((ndo, "\n\tTS/PC "));
+ ND_PRINT("\n\tTS/PC ");
if(len < 6) goto invalid;
- ND_PRINT((ndo, "timestamp %u packetcounter %u", EXTRACT_32BITS (message + 4),
- EXTRACT_16BITS(message + 2)));
+ ND_PRINT("timestamp %u packetcounter %u",
+ GET_BE_U_4(message + 4),
+ GET_BE_U_2(message + 2));
}
break;
case MESSAGE_HMAC : {
if (!ndo->ndo_vflag)
- ND_PRINT((ndo, " hmac"));
+ ND_PRINT(" hmac");
else {
unsigned j;
- ND_PRINT((ndo, "\n\tHMAC "));
+ ND_PRINT("\n\tHMAC ");
if(len < 18) goto invalid;
- ND_PRINT((ndo, "key-id %u digest-%u ", EXTRACT_16BITS(message + 2), len - 2));
+ ND_PRINT("key-id %u digest-%u ", GET_BE_U_2(message + 2),
+ len - 2);
for (j = 0; j < len - 2; j++)
- ND_PRINT((ndo, "%02X", message[4 + j]));
+ ND_PRINT("%02X", GET_U_1(message + j + 4));
}
}
break;
case MESSAGE_UPDATE_SRC_SPECIFIC : {
if(!ndo->ndo_vflag) {
- ND_PRINT((ndo, " ss-update"));
+ ND_PRINT(" 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"));
+ ND_PRINT("\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);
+ ae = GET_U_1(message + 2);
+ src_plen = GET_U_1(message + 3);
+ plen = GET_U_1(message + 4);
+ omitted = GET_U_1(message + 5);
+ interval = GET_BE_U_2(message + 6);
+ seqno = GET_BE_U_2(message + 8);
+ metric = GET_BE_U_2(message + 10);
rc = network_prefix(ae, plen, omitted, message + 2 + parsed_len,
ae == 1 ? v4_prefix : v6_prefix,
len - parsed_len, prefix);
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",
+ ND_PRINT(" %s from", format_prefix(ndo, prefix, plen));
+ ND_PRINT(" %s metric %u seqno %u interval %s",
format_prefix(ndo, src_prefix, src_plen),
- metric, seqno, format_interval_update(interval)));
+ metric, seqno, format_interval_update(interval));
/* extra data? */
if((u_int)parsed_len < len)
subtlvs_print(ndo, message + 2 + parsed_len,
case MESSAGE_REQUEST_SRC_SPECIFIC : {
if(!ndo->ndo_vflag)
- ND_PRINT((ndo, " ss-request"));
+ ND_PRINT(" 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 "));
+ ND_PRINT("\n\tSS-Request ");
if(len < 3) goto invalid;
- ae = message[2];
- plen = message[3];
- src_plen = message[4];
+ ae = GET_U_1(message + 2);
+ plen = GET_U_1(message + 3);
+ src_plen = GET_U_1(message + 4);
rc = network_prefix(ae, plen, 0, message + 2 + parsed_len,
NULL, len - parsed_len, prefix);
if(rc < 0) goto invalid;
src_plen += 96;
parsed_len += rc;
if(ae == 0) {
- ND_PRINT((ndo, "for any"));
+ ND_PRINT("for any");
} else {
- ND_PRINT((ndo, "for (%s, ", format_prefix(ndo, prefix, plen)));
- ND_PRINT((ndo, "%s)", format_prefix(ndo, src_prefix, src_plen)));
+ ND_PRINT("for (%s, ", format_prefix(ndo, prefix, plen));
+ ND_PRINT("%s)", format_prefix(ndo, src_prefix, src_plen));
}
}
}
case MESSAGE_MH_REQUEST_SRC_SPECIFIC : {
if(!ndo->ndo_vflag)
- ND_PRINT((ndo, " ss-mh-request"));
+ ND_PRINT(" 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 "));
+ ND_PRINT("\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];
+ ae = GET_U_1(message + 2);
+ plen = GET_U_1(message + 3);
+ seqno = GET_BE_U_2(message + 4);
+ hopc = GET_U_1(message + 6);
+ src_plen = GET_U_1(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)
src_plen += 96;
- ND_PRINT((ndo, "(%u hops) for (%s, ",
- hopc, format_prefix(ndo, prefix, plen)));
- ND_PRINT((ndo, "%s) seqno %u id %s",
+ ND_PRINT("(%u hops) for (%s, ",
+ hopc, format_prefix(ndo, prefix, plen));
+ ND_PRINT("%s) seqno %u id %s",
format_prefix(ndo, src_prefix, src_plen),
- seqno, format_id(router_id)));
+ seqno, format_id(ndo, router_id));
+ }
+ }
+ break;
+
+ case MESSAGE_MAC: {
+ if (!ndo->ndo_vflag)
+ ND_PRINT(" mac");
+ else {
+ ND_PRINT("\n\tMAC ");
+ ND_PRINT("len %u", len);
+ }
+ }
+ break;
+
+ case MESSAGE_PC: {
+ if (!ndo->ndo_vflag)
+ ND_PRINT(" pc");
+ else {
+ ND_PRINT("\n\tPC");
+ if(len < 4) goto invalid;
+ ND_PRINT(" value %u",
+ GET_BE_U_4(message + 2));
+ ND_PRINT(" index len %u", len-4);
+ }
+ }
+ break;
+
+ case MESSAGE_CHALLENGE_REQUEST: {
+ if (!ndo->ndo_vflag)
+ ND_PRINT(" challenge_request");
+ else {
+ ND_PRINT("\n\tChallenge Request");
+ if(len > 192) goto invalid;
+ ND_PRINT(" len %u", len);
+ }
+ }
+ break;
+
+ case MESSAGE_CHALLENGE_REPLY: {
+ if (!ndo->ndo_vflag)
+ ND_PRINT(" challenge_reply");
+ else {
+ ND_PRINT("\n\tChallenge Reply");
+ if (len > 192) goto invalid;
+ ND_PRINT(" len %u", len);
}
}
break;
default:
if (!ndo->ndo_vflag)
- ND_PRINT((ndo, " unknown"));
+ ND_PRINT(" unknown");
else
- ND_PRINT((ndo, "\n\tUnknown message type %d", type));
+ ND_PRINT("\n\tUnknown message type %u", type);
}
i += len + 2;
}
+
+ return 0; /* OK */
+
+trunc:
+ return -1; /* packet truncated by capture process */
+
+invalid:
+ return -2; /* packet is invalid */
+}
+
+static void
+babel_print_v2(netdissect_options *ndo,
+ const u_char *cp, u_int length)
+{
+ u_short bodylen;
+ int ret;
+
+ ND_TCHECK_4(cp);
+ if (length < 4)
+ goto invalid;
+ bodylen = GET_BE_U_2(cp + 2);
+ ND_PRINT(" (%u)", bodylen);
+ length -= 4;
+ cp += 4;
+
+ /* Process the TLVs in the body */
+ if (length < bodylen)
+ goto invalid;
+ ret = babel_print_v2_tlvs(ndo, cp, bodylen, length);
+ if (ret == -1)
+ goto trunc;
+ if (ret == -2)
+ goto invalid;
+ length -= bodylen;
+ cp += bodylen;
+
+ /* If there's a trailer, process the TLVs in the trailer */
+ if (length != 0) {
+ if(ndo->ndo_vflag) ND_PRINT("\n\t----");
+ else ND_PRINT(" |");
+ ret = babel_print_v2_tlvs(ndo, cp, length, length);
+ if (ret == -1)
+ goto trunc;
+ if (ret == -2)
+ goto invalid;
+ }
return;
trunc:
- ND_PRINT((ndo, " %s", tstr));
+ nd_print_trunc(ndo);
return;
invalid:
- ND_PRINT((ndo, "%s", istr));
- return;
+ nd_print_invalid(ndo);
}
projects / tcpdump / blobdiff