* SUCH DAMAGE.
*/
+/* \summary: Babel Routing Protocol printer */
+
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
-#include <tcpdump-stdinc.h>
+#include <netdissect-stdinc.h>
#include <stdio.h>
#include <string.h>
-#include "interface.h"
+#include "netdissect.h"
#include "addrtoname.h"
#include "extract.h"
{
ND_PRINT((ndo, "babel"));
- ND_TCHECK2(*cp, 4);
+ ND_TCHECK_4(cp);
if(cp[0] != 42) {
- ND_PRINT((ndo, " malformed header"));
+ ND_PRINT((ndo, " invalid header"));
return;
} else {
- ND_PRINT((ndo, " %d", cp[1]));
+ ND_PRINT((ndo, " %d", EXTRACT_U_1(cp + 1)));
}
- switch(cp[1]) {
+ switch(EXTRACT_U_1(cp + 1)) {
case 2:
babel_print_v2(ndo, cp, length);
break;
#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
{
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]);
+ EXTRACT_U_1(id), EXTRACT_U_1(id + 1), EXTRACT_U_1(id + 2),
+ EXTRACT_U_1(id + 3), EXTRACT_U_1(id + 4), EXTRACT_U_1(id + 5),
+ EXTRACT_U_1(id + 6), EXTRACT_U_1(id + 7));
buf[24] = '\0';
return buf;
}
if(plen >= 96 && memcmp(prefix, v4prefix, 12) == 0)
snprintf(buf, 50, "%s/%u", ipaddr_string(ndo, prefix + 12), plen - 96);
else
-#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;
}
if(memcmp(prefix, v4prefix, 12) == 0)
return ipaddr_string(ndo, prefix + 12);
else
-#ifdef INET6
return ip6addr_string(ndo, prefix);
-#else
- return "IPv6 addresses not supported";
-#endif
}
static const char *
uint32_t t1, t2;
while (cp < ep) {
- subtype = *cp++;
+ subtype = EXTRACT_U_1(cp);
+ cp++;
if(subtype == MESSAGE_SUB_PAD1) {
ND_PRINT((ndo, " sub-pad1"));
continue;
}
if(cp == ep)
- goto corrupt;
- sublen = *cp++;
+ goto invalid;
+ sublen = EXTRACT_U_1(cp);
+ cp++;
if(cp + sublen > ep)
- goto corrupt;
+ goto invalid;
switch(subtype) {
case MESSAGE_SUB_PADN:
}
sep = " ";
while(sublen--) {
- ND_PRINT((ndo, "%s%s", sep, tok2str(diversity_str, "%u", *cp++)));
+ ND_PRINT((ndo, "%s%s", sep, tok2str(diversity_str, "%u", EXTRACT_U_1(cp))));
+ cp++;
sep = "-";
}
- if(tlv_type != MESSAGE_UPDATE)
+ 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 corrupt;
- t1 = EXTRACT_32BITS(cp);
+ goto invalid;
+ t1 = EXTRACT_BE_U_4(cp);
ND_PRINT((ndo, " %s", format_timestamp(t1)));
} else if(tlv_type == MESSAGE_IHU) {
if(sublen < 8)
- goto corrupt;
- t1 = EXTRACT_32BITS(cp);
+ goto invalid;
+ t1 = EXTRACT_BE_U_4(cp);
ND_PRINT((ndo, " %s", format_timestamp(t1)));
- t2 = EXTRACT_32BITS(cp + 4);
+ t2 = EXTRACT_BE_U_4(cp + 4);
ND_PRINT((ndo, "|%s", format_timestamp(t2)));
} else
ND_PRINT((ndo, " (bogus)"));
} /* while */
return;
- corrupt:
- ND_PRINT((ndo, " (corrupt)"));
+ 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(netdissect_options *ndo,
{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);
+ ND_TCHECK_4(cp);
if (length < 4)
- goto corrupt;
- bodylen = EXTRACT_16BITS(cp + 2);
+ goto invalid;
+ bodylen = EXTRACT_BE_U_2(cp + 2);
ND_PRINT((ndo, " (%u)", bodylen));
/* Process the TLVs in the body */
message = cp + 4 + i;
- ND_TCHECK2(*message, 1);
- if((type = message[0]) == MESSAGE_PAD1) {
+ ND_TCHECK_1(message);
+ if((type = EXTRACT_U_1(message)) == MESSAGE_PAD1) {
ND_PRINT((ndo, ndo->ndo_vflag ? "\n\tPad 1" : " pad1"));
i += 1;
continue;
}
- ND_TCHECK2(*message, 2);
+ ND_TCHECK_2(message);
ICHECK(i, 2);
len = message[1];
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);
+ if(len < 6) goto invalid;
+ nonce = EXTRACT_BE_U_2(message + 4);
+ interval = EXTRACT_BE_U_2(message + 6);
ND_PRINT((ndo, "%04x %s", nonce, format_interval(interval)));
}
}
ND_PRINT((ndo, " ack"));
else {
ND_PRINT((ndo, "\n\tAcknowledgment "));
- if(len < 2) goto corrupt;
- nonce = EXTRACT_16BITS(message + 2);
+ if(len < 2) goto invalid;
+ nonce = EXTRACT_BE_U_2(message + 2);
ND_PRINT((ndo, "%04x", nonce));
}
}
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);
+ if(len < 6) goto invalid;
+ seqno = EXTRACT_BE_U_2(message + 4);
+ interval = EXTRACT_BE_U_2(message + 6);
ND_PRINT((ndo, "seqno %u interval %s", seqno, format_interval(interval)));
/* Extra data. */
if(len > 6)
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(len < 6) goto invalid;
+ txcost = EXTRACT_BE_U_2(message + 4);
+ interval = EXTRACT_BE_U_2(message + 6);
+ rc = network_address(EXTRACT_U_1(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)));
ND_PRINT((ndo, " router-id"));
else {
ND_PRINT((ndo, "\n\tRouter Id"));
- if(len < 10) goto corrupt;
+ if(len < 10) goto invalid;
ND_PRINT((ndo, " %s", format_id(message + 4)));
}
}
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;
+ if(len < 2) goto invalid;
+ rc = network_address(EXTRACT_U_1(message + 2), message + 4,
+ len - 2, nh);
+ if(rc < 0) goto invalid;
ND_PRINT((ndo, " %s", format_address(ndo, nh)));
}
}
ND_PRINT((ndo, "/truncated"));
else
ND_PRINT((ndo, "%s%s%s",
- (message[3] & 0x80) ? "/prefix": "",
- (message[3] & 0x40) ? "/id" : "",
- (message[3] & 0x3f) ? "/unknown" : ""));
+ (EXTRACT_U_1(message + 3) & 0x80) ? "/prefix": "",
+ (EXTRACT_U_1(message + 3) & 0x40) ? "/id" : "",
+ (EXTRACT_U_1(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;
+ if(len < 10) goto invalid;
plen = message[4] + (message[2] == 1 ? 96 : 0);
- rc = network_prefix(message[2], message[4], message[5],
+ rc = network_prefix(EXTRACT_U_1(message + 2),
+ EXTRACT_U_1(message + 4),
+ EXTRACT_U_1(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);
+ if(rc < 0) goto invalid;
+ interval = EXTRACT_BE_U_2(message + 6);
+ seqno = EXTRACT_BE_U_2(message + 8);
+ metric = EXTRACT_BE_U_2(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" : "",
+ (EXTRACT_U_1(message + 3) & 0x80) ? "/prefix": "",
+ (EXTRACT_U_1(message + 3) & 0x40) ? "/id" : "",
+ (EXTRACT_U_1(message + 3) & 0x3f) ? "/unknown" : "",
format_prefix(ndo, prefix, plen),
metric, seqno, format_interval_update(interval)));
- if(message[3] & 0x80) {
+ if(EXTRACT_U_1(message + 3) & 0x80) {
if(message[2] == 1)
memcpy(v4_prefix, prefix, 16);
else
int rc;
u_char prefix[16], plen;
ND_PRINT((ndo, "\n\tRequest "));
- if(len < 2) goto corrupt;
+ if(len < 2) goto invalid;
plen = message[3] + (message[2] == 1 ? 96 : 0);
- rc = network_prefix(message[2], message[3], 0,
+ rc = network_prefix(EXTRACT_U_1(message + 2),
+ EXTRACT_U_1(message + 3), 0,
message + 4, NULL, len - 2, prefix);
- if(rc < 0) goto corrupt;
+ if(rc < 0) goto invalid;
ND_PRINT((ndo, "for %s",
- message[2] == 0 ? "any" : format_prefix(ndo, prefix, plen)));
+ EXTRACT_U_1(message + 2) == 0 ? "any" : format_prefix(ndo, prefix, plen)));
}
}
break;
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,
+ if(len < 14) goto invalid;
+ seqno = EXTRACT_BE_U_2(message + 4);
+ rc = network_prefix(EXTRACT_U_1(message + 2),
+ EXTRACT_U_1(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);
ND_PRINT((ndo, "(%u hops) for %s seqno %u id %s",
- message[6], format_prefix(ndo, prefix, plen),
+ EXTRACT_U_1(message + 6), format_prefix(ndo, prefix, plen),
seqno, format_id(message + 8)));
}
}
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)));
+ if(len < 6) goto invalid;
+ ND_PRINT((ndo, "timestamp %u packetcounter %u", EXTRACT_BE_U_4(message + 4),
+ EXTRACT_BE_U_2(message + 2)));
}
break;
case MESSAGE_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));
+ if(len < 18) goto invalid;
+ ND_PRINT((ndo, "key-id %u digest-%u ", EXTRACT_BE_U_2(message + 2), len - 2));
for (j = 0; j < len - 2; j++)
- ND_PRINT((ndo, "%02X", message[4 + j]));
+ ND_PRINT((ndo, "%02X", EXTRACT_U_1(message + j + 4)));
+ }
+ }
+ 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_BE_U_2(message + 6);
+ seqno = EXTRACT_BE_U_2(message + 8);
+ metric = EXTRACT_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);
+ 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_BE_U_2(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 (!ndo->ndo_vflag)
ND_PRINT((ndo, " unknown"));
ND_PRINT((ndo, " %s", tstr));
return;
- corrupt:
- ND_PRINT((ndo, " (corrupt)"));
+ invalid:
+ ND_PRINT((ndo, "%s", istr));
return;
}
projects / tcpdump / blobdiff