/*
* Copyright (c) 1998-2007 The TCPDUMP project
+ * Copyright (c) 2009 Florian Forster
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that: (1) source code
* LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE.
*
- * Optimized Link State Protocl (OLSR) as per rfc3626
- *
+ * IPv6 additions by Florian Forster <octo at verplant.org>
*/
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
+/* \summary: Optimized Link State Routing Protocol (OLSR) printer */
+
+/* specification: RFC 3626 */
-#include <tcpdump-stdinc.h>
+#include <config.h>
-#include <stdio.h>
-#include <string.h>
+#include "netdissect-stdinc.h"
-#include "interface.h"
+#define ND_LONGJMP_FROM_TCHECK
+#include "netdissect.h"
#include "addrtoname.h"
-#include "extract.h"
-#include "ip.h"
+#include "extract.h"
/*
* RFC 3626 common header
*/
struct olsr_common {
- u_int8_t packet_len[2];
- u_int8_t packet_seq[2];
+ nd_uint16_t packet_len;
+ nd_uint16_t packet_seq;
};
#define OLSR_HELLO_MSG 1 /* rfc3626 */
#define OLSR_HELLO_LQ_MSG 201 /* LQ extensions olsr.org */
#define OLSR_TC_LQ_MSG 202 /* LQ extensions olsr.org */
-static struct tok olsr_msg_values[] = {
+static const struct tok olsr_msg_values[] = {
{ OLSR_HELLO_MSG, "Hello" },
{ OLSR_TC_MSG, "TC" },
{ OLSR_MID_MSG, "MID" },
{ 0, NULL}
};
-struct olsr_msg {
- u_int8_t msg_type;
- u_int8_t vtime;
- u_int8_t msg_len[2];
- u_int8_t originator[4];
- u_int8_t ttl;
- u_int8_t hopcount;
- u_int8_t msg_seq[2];
+struct olsr_msg4 {
+ nd_uint8_t msg_type;
+ nd_uint8_t vtime;
+ nd_uint16_t msg_len;
+ nd_ipv4 originator;
+ nd_uint8_t ttl;
+ nd_uint8_t hopcount;
+ nd_uint16_t msg_seq;
+};
+
+struct olsr_msg6 {
+ nd_uint8_t msg_type;
+ nd_uint8_t vtime;
+ nd_uint16_t msg_len;
+ nd_ipv6 originator;
+ nd_uint8_t ttl;
+ nd_uint8_t hopcount;
+ nd_uint16_t msg_seq;
};
struct olsr_hello {
- u_int8_t res[2];
- u_int8_t htime;
- u_int8_t will;
+ nd_byte res[2];
+ nd_uint8_t htime;
+ nd_uint8_t will;
};
struct olsr_hello_link {
- u_int8_t link_code;
- u_int8_t res;
- u_int8_t len[2];
+ nd_uint8_t link_code;
+ nd_byte res;
+ nd_uint16_t len;
};
struct olsr_tc {
- u_int8_t ans_seq[2];
- u_int8_t res[2];
+ nd_uint16_t ans_seq;
+ nd_byte res[2];
};
-struct olsr_hna {
- u_int8_t network[4];
- u_int8_t mask[4];
+struct olsr_hna4 {
+ nd_ipv4 network;
+ nd_ipv4 mask;
+};
+
+struct olsr_hna6 {
+ nd_ipv6 network;
+ nd_ipv6 mask;
+};
+
+
+/** gateway HNA flags */
+enum gateway_hna_flags {
+ GW_HNA_FLAG_LINKSPEED = 1 << 0,
+ GW_HNA_FLAG_IPV4 = 1 << 1,
+ GW_HNA_FLAG_IPV4_NAT = 1 << 2,
+ GW_HNA_FLAG_IPV6 = 1 << 3,
+ GW_HNA_FLAG_IPV6PREFIX = 1 << 4
+};
+
+/** gateway HNA field byte offsets in the netmask field of the HNA */
+enum gateway_hna_fields {
+ GW_HNA_PAD = 0,
+ GW_HNA_FLAGS = 1,
+ GW_HNA_UPLINK = 2,
+ GW_HNA_DOWNLINK = 3,
+ GW_HNA_V6PREFIXLEN = 4,
+ GW_HNA_V6PREFIX = 5
};
#define OLSR_EXTRACT_LINK_TYPE(link_code) (link_code & 0x3)
#define OLSR_EXTRACT_NEIGHBOR_TYPE(link_code) (link_code >> 2)
-static struct tok olsr_link_type_values[] = {
+static const struct tok olsr_link_type_values[] = {
{ 0, "Unspecified" },
{ 1, "Asymmetric" },
{ 2, "Symmetric" },
{ 0, NULL}
};
-static struct tok olsr_neighbor_type_values[] = {
+static const struct tok olsr_neighbor_type_values[] = {
{ 0, "Not-Neighbor" },
{ 1, "Symmetric" },
{ 2, "Symmetric-MPR" },
{ 0, NULL}
};
-struct olsr_lq_neighbor {
- u_int8_t neighbor[4];
- u_int8_t link_quality;
- u_int8_t neighbor_link_quality;
- u_int8_t res[2];
+struct olsr_lq_neighbor4 {
+ nd_ipv4 neighbor;
+ nd_uint8_t link_quality;
+ nd_uint8_t neighbor_link_quality;
+ nd_byte res[2];
+};
+
+struct olsr_lq_neighbor6 {
+ nd_ipv6 neighbor;
+ nd_uint8_t link_quality;
+ nd_uint8_t neighbor_link_quality;
+ nd_byte res[2];
};
+#define MAX_SMARTGW_SPEED 320000000
+
+/**
+ * Convert an encoded 1 byte transport value (5 bits mantissa, 3 bits exponent)
+ * to an uplink/downlink speed value
+ *
+ * @param value the encoded 1 byte transport value
+ * @return the uplink/downlink speed value (in kbit/s)
+ */
+static uint32_t deserialize_gw_speed(uint8_t value) {
+ uint32_t speed;
+ uint32_t exp;
+
+ if (!value) {
+ return 0;
+ }
+
+ if (value == UINT8_MAX) {
+ /* maximum value: also return maximum value */
+ return MAX_SMARTGW_SPEED;
+ }
+
+ speed = (value >> 3) + 1;
+ exp = value & 7;
+
+ while (exp != 0) {
+ speed *= 10;
+ exp--;
+ }
+ return speed;
+}
+
/*
* macro to convert the 8-bit mantissa/exponent to a double float
* taken from olsr.org.
* print a neighbor list with LQ extensions.
*/
static void
-olsr_print_lq_neighbor (const u_char *msg_data, u_int hello_len)
+olsr_print_lq_neighbor4(netdissect_options *ndo,
+ const u_char *msg_data, u_int hello_len)
+{
+ const struct olsr_lq_neighbor4 *lq_neighbor;
+
+ while (hello_len >= sizeof(struct olsr_lq_neighbor4)) {
+
+ lq_neighbor = (const struct olsr_lq_neighbor4 *)msg_data;
+ ND_TCHECK_SIZE(lq_neighbor);
+
+ ND_PRINT("\n\t neighbor %s, link-quality %.2f%%"
+ ", neighbor-link-quality %.2f%%",
+ GET_IPADDR_STRING(lq_neighbor->neighbor),
+ ((double) GET_U_1(lq_neighbor->link_quality)/2.55),
+ ((double) GET_U_1(lq_neighbor->neighbor_link_quality)/2.55));
+
+ msg_data += sizeof(struct olsr_lq_neighbor4);
+ hello_len -= sizeof(struct olsr_lq_neighbor4);
+ }
+}
+
+static void
+olsr_print_lq_neighbor6(netdissect_options *ndo,
+ const u_char *msg_data, u_int hello_len)
{
- struct olsr_lq_neighbor *lq_neighbor;
+ const struct olsr_lq_neighbor6 *lq_neighbor;
- while (hello_len >= sizeof(struct olsr_lq_neighbor)) {
+ while (hello_len >= sizeof(struct olsr_lq_neighbor6)) {
- lq_neighbor = (struct olsr_lq_neighbor *)msg_data;
+ lq_neighbor = (const struct olsr_lq_neighbor6 *)msg_data;
+ ND_TCHECK_SIZE(lq_neighbor);
- printf("\n\t neighbor %s, link-quality %.2lf%%"
- ", neighbor-link-quality %.2lf%%",
- ipaddr_string(lq_neighbor->neighbor),
- ((double)lq_neighbor->link_quality/2.55),
- ((double)lq_neighbor->neighbor_link_quality/2.55));
+ ND_PRINT("\n\t neighbor %s, link-quality %.2f%%"
+ ", neighbor-link-quality %.2f%%",
+ GET_IP6ADDR_STRING(lq_neighbor->neighbor),
+ ((double) GET_U_1(lq_neighbor->link_quality)/2.55),
+ ((double) GET_U_1(lq_neighbor->neighbor_link_quality)/2.55));
- msg_data += sizeof(struct olsr_lq_neighbor);
- hello_len -= sizeof(struct olsr_lq_neighbor);
+ msg_data += sizeof(struct olsr_lq_neighbor6);
+ hello_len -= sizeof(struct olsr_lq_neighbor6);
}
}
* print a neighbor list.
*/
static void
-olsr_print_neighbor (const u_char *msg_data, u_int hello_len)
+olsr_print_neighbor(netdissect_options *ndo,
+ const u_char *msg_data, u_int hello_len)
{
int neighbor;
- printf("\n\t neighbor\n\t\t");
+ ND_PRINT("\n\t neighbor\n\t\t");
neighbor = 1;
- while (hello_len >= sizeof(struct in_addr)) {
-
+ while (hello_len >= sizeof(nd_ipv4)) {
/* print 4 neighbors per line */
-
- printf("%s%s", ipaddr_string(msg_data),
+ ND_PRINT("%s%s", GET_IPADDR_STRING(msg_data),
neighbor % 4 == 0 ? "\n\t\t" : " ");
- msg_data += sizeof(struct in_addr);
- hello_len -= sizeof(struct in_addr);
+ msg_data += sizeof(nd_ipv4);
+ hello_len -= sizeof(nd_ipv4);
}
}
void
-olsr_print (const u_char *pptr, u_int length)
+olsr_print(netdissect_options *ndo,
+ const u_char *pptr, u_int length, int is_ipv6)
{
union {
const struct olsr_common *common;
- const struct olsr_msg *msg;
+ const struct olsr_msg4 *msg4;
+ const struct olsr_msg6 *msg6;
const struct olsr_hello *hello;
const struct olsr_hello_link *hello_link;
- const struct olsr_lq_neighbor *lq_neighbor;
const struct olsr_tc *tc;
- const struct olsr_hna *hna;
+ const struct olsr_hna4 *hna;
} ptr;
- u_int msg_type, msg_len, msg_tlen, hello_len, prefix;
- u_int16_t name_entries, name_entry_type, name_entry_len;
- u_int8_t link_type, neighbor_type;
+ u_int msg_type, msg_len, msg_tlen, hello_len;
+ uint16_t name_entry_type, name_entry_len;
+ u_int name_entry_padding;
+ uint8_t link_type, neighbor_type;
const u_char *tptr, *msg_data;
- tptr = pptr;
+ ndo->ndo_protocol = "olsr";
+ tptr = pptr;
- if (length < sizeof(struct olsr_common)) {
- goto trunc;
- }
+ nd_print_protocol_caps(ndo);
+ ND_PRINT("v%u", (is_ipv6) ? 6 : 4);
- if (!TTEST2(*tptr, sizeof(struct olsr_common))) {
- goto trunc;
- }
+ ND_ICHECKMSG_ZU("packet length", length, <, sizeof(struct olsr_common));
- ptr.common = (struct olsr_common *)tptr;
- length = MIN(length, EXTRACT_16BITS(ptr.common->packet_len));
+ ptr.common = (const struct olsr_common *)tptr;
+ length = ND_MIN(length, GET_BE_U_2(ptr.common->packet_len));
- printf("OLSR, seq 0x%04x, length %u",
- EXTRACT_16BITS(ptr.common->packet_seq),
- length);
+ ND_PRINT(", seq 0x%04x, length %u",
+ GET_BE_U_2(ptr.common->packet_seq),
+ length);
tptr += sizeof(struct olsr_common);
/*
* In non-verbose mode, just print version.
*/
- if (vflag < 1) {
- return;
+ if (ndo->ndo_vflag < 1) {
+ return;
}
while (tptr < (pptr+length)) {
+ union
+ {
+ const struct olsr_msg4 *v4;
+ const struct olsr_msg6 *v6;
+ } msgptr;
+ int msg_len_valid = 0;
+
+ if (is_ipv6) {
+ ND_TCHECK_LEN(tptr, sizeof(struct olsr_msg6));
+ msgptr.v6 = (const struct olsr_msg6 *) tptr;
+ msg_type = GET_U_1(msgptr.v6->msg_type);
+ msg_len = GET_BE_U_2(msgptr.v6->msg_len);
+ if ((msg_len >= sizeof (struct olsr_msg6))
+ && (msg_len <= length))
+ msg_len_valid = 1;
+
+ /* infinite loop check */
+ if (msg_type == 0 || msg_len == 0) {
+ return;
+ }
- if (!TTEST2(*tptr, sizeof(struct olsr_msg)))
- goto trunc;
+ ND_PRINT("\n\t%s Message (%#04x), originator %s, ttl %u, hop %u"
+ "\n\t vtime %.3fs, msg-seq 0x%04x, length %u%s",
+ tok2str(olsr_msg_values, "Unknown", msg_type),
+ msg_type, GET_IP6ADDR_STRING(msgptr.v6->originator),
+ GET_U_1(msgptr.v6->ttl),
+ GET_U_1(msgptr.v6->hopcount),
+ ME_TO_DOUBLE(GET_U_1(msgptr.v6->vtime)),
+ GET_BE_U_2(msgptr.v6->msg_seq),
+ msg_len, (msg_len_valid == 0) ? " (invalid)" : "");
+ if (!msg_len_valid) {
+ return;
+ }
- ptr.msg = (struct olsr_msg *)tptr;
+ msg_tlen = msg_len - sizeof(struct olsr_msg6);
+ msg_data = tptr + sizeof(struct olsr_msg6);
+ } else { /* (!is_ipv6) */
+ ND_TCHECK_LEN(tptr, sizeof(struct olsr_msg4));
+ msgptr.v4 = (const struct olsr_msg4 *) tptr;
+ msg_type = GET_U_1(msgptr.v4->msg_type);
+ msg_len = GET_BE_U_2(msgptr.v4->msg_len);
+ if ((msg_len >= sizeof (struct olsr_msg4))
+ && (msg_len <= length))
+ msg_len_valid = 1;
+
+ /* infinite loop check */
+ if (msg_type == 0 || msg_len == 0) {
+ return;
+ }
- msg_type = ptr.msg->msg_type;
- msg_len = EXTRACT_16BITS(ptr.msg->msg_len);
+ ND_PRINT("\n\t%s Message (%#04x), originator %s, ttl %u, hop %u"
+ "\n\t vtime %.3fs, msg-seq 0x%04x, length %u%s",
+ tok2str(olsr_msg_values, "Unknown", msg_type),
+ msg_type, GET_IPADDR_STRING(msgptr.v4->originator),
+ GET_U_1(msgptr.v4->ttl),
+ GET_U_1(msgptr.v4->hopcount),
+ ME_TO_DOUBLE(GET_U_1(msgptr.v4->vtime)),
+ GET_BE_U_2(msgptr.v4->msg_seq),
+ msg_len, (msg_len_valid == 0) ? " (invalid)" : "");
+ if (!msg_len_valid) {
+ return;
+ }
- /* infinite loop check */
- if (msg_type == 0 || msg_len == 0) {
- return;
+ msg_tlen = msg_len - sizeof(struct olsr_msg4);
+ msg_data = tptr + sizeof(struct olsr_msg4);
}
- printf("\n\t%s Message (%u), originator %s, ttl %u, hop %u"
- "\n\t vtime %.3lfs, msg-seq 0x%04x, length %u",
- tok2str(olsr_msg_values, "Unknown", msg_type),
- msg_type, ipaddr_string(ptr.msg->originator),
- ptr.msg->ttl,
- ptr.msg->hopcount,
- ME_TO_DOUBLE(ptr.msg->vtime),
- EXTRACT_16BITS(ptr.msg->msg_seq),
- msg_len);
-
- msg_tlen = msg_len - sizeof(struct olsr_msg);
- msg_data = tptr + sizeof(struct olsr_msg);
-
switch (msg_type) {
case OLSR_HELLO_MSG:
case OLSR_HELLO_LQ_MSG:
- if (!TTEST2(*msg_data, sizeof(struct olsr_hello)))
- goto trunc;
+ ND_ICHECKMSG_ZU("message length", msg_tlen, <,
+ sizeof(struct olsr_hello));
- ptr.hello = (struct olsr_hello *)msg_data;
- printf("\n\t hello-time %.3lfs, MPR willingness %u",
- ME_TO_DOUBLE(ptr.hello->htime), ptr.hello->will);
+ ptr.hello = (const struct olsr_hello *)msg_data;
+ ND_PRINT("\n\t hello-time %.3fs, MPR willingness %u",
+ ME_TO_DOUBLE(GET_U_1(ptr.hello->htime)),
+ GET_U_1(ptr.hello->will));
msg_data += sizeof(struct olsr_hello);
msg_tlen -= sizeof(struct olsr_hello);
while (msg_tlen >= sizeof(struct olsr_hello_link)) {
+ int hello_len_valid = 0;
/*
* link-type.
*/
- if (!TTEST2(*msg_data, sizeof(struct olsr_hello_link)))
- goto trunc;
+ ND_TCHECK_LEN(msg_data, sizeof(struct olsr_hello_link));
+
+ ptr.hello_link = (const struct olsr_hello_link *)msg_data;
- ptr.hello_link = (struct olsr_hello_link *)msg_data;
+ hello_len = GET_BE_U_2(ptr.hello_link->len);
+ link_type = OLSR_EXTRACT_LINK_TYPE(GET_U_1(ptr.hello_link->link_code));
+ neighbor_type = OLSR_EXTRACT_NEIGHBOR_TYPE(GET_U_1(ptr.hello_link->link_code));
- hello_len = EXTRACT_16BITS(ptr.hello_link->len);
- link_type = OLSR_EXTRACT_LINK_TYPE(ptr.hello_link->link_code);
- neighbor_type = OLSR_EXTRACT_NEIGHBOR_TYPE(ptr.hello_link->link_code);
+ if ((hello_len <= msg_tlen)
+ && (hello_len >= sizeof(struct olsr_hello_link)))
+ hello_len_valid = 1;
- printf("\n\t link-type %s, neighbor-type %s, len %u",
+ ND_PRINT("\n\t link-type %s, neighbor-type %s, len %u%s",
tok2str(olsr_link_type_values, "Unknown", link_type),
tok2str(olsr_neighbor_type_values, "Unknown", neighbor_type),
- hello_len);
+ hello_len,
+ (hello_len_valid == 0) ? " (invalid)" : "");
+
+ if (hello_len_valid == 0)
+ break;
msg_data += sizeof(struct olsr_hello_link);
msg_tlen -= sizeof(struct olsr_hello_link);
hello_len -= sizeof(struct olsr_hello_link);
+ ND_TCHECK_LEN(msg_data, hello_len);
if (msg_type == OLSR_HELLO_MSG) {
- olsr_print_neighbor(msg_data, hello_len);
+ olsr_print_neighbor(ndo, msg_data, hello_len);
} else {
- olsr_print_lq_neighbor(msg_data, hello_len);
+ if (is_ipv6) {
+ olsr_print_lq_neighbor6(ndo, msg_data, hello_len);
+ } else {
+ olsr_print_lq_neighbor4(ndo, msg_data, hello_len);
+ }
}
msg_data += hello_len;
case OLSR_TC_MSG:
case OLSR_TC_LQ_MSG:
- if (!TTEST2(*msg_data, sizeof(struct olsr_tc)))
- goto trunc;
+ ND_ICHECKMSG_ZU("message length", msg_tlen, <,
+ sizeof(struct olsr_tc));
+ ND_TCHECK_LEN(msg_data, sizeof(struct olsr_tc));
- ptr.tc = (struct olsr_tc *)msg_data;
- printf("\n\t advertised neighbor seq 0x%04x",
- EXTRACT_16BITS(ptr.tc->ans_seq));
+ ptr.tc = (const struct olsr_tc *)msg_data;
+ ND_PRINT("\n\t advertised neighbor seq 0x%04x",
+ GET_BE_U_2(ptr.tc->ans_seq));
msg_data += sizeof(struct olsr_tc);
msg_tlen -= sizeof(struct olsr_tc);
if (msg_type == OLSR_TC_MSG) {
- olsr_print_neighbor(msg_data, msg_tlen);
+ olsr_print_neighbor(ndo, msg_data, msg_tlen);
} else {
- olsr_print_lq_neighbor(msg_data, msg_tlen);
+ if (is_ipv6) {
+ olsr_print_lq_neighbor6(ndo, msg_data, msg_tlen);
+ } else {
+ olsr_print_lq_neighbor4(ndo, msg_data, msg_tlen);
+ }
}
break;
case OLSR_MID_MSG:
- if (!TTEST2(*msg_data, sizeof(struct in_addr)))
- goto trunc;
+ {
+ u_int addr_size = (u_int)sizeof(nd_ipv4);
+
+ if (is_ipv6)
+ addr_size = (u_int)sizeof(nd_ipv6);
- while (msg_tlen >= sizeof(struct in_addr)) {
- printf("\n\t interface address %s", ipaddr_string(msg_data));
- msg_data += sizeof(struct in_addr);
- msg_tlen -= sizeof(struct in_addr);
+ while (msg_tlen >= addr_size) {
+ ND_TCHECK_LEN(msg_data, addr_size);
+ ND_PRINT("\n\t interface address %s",
+ is_ipv6 ? GET_IP6ADDR_STRING(msg_data) :
+ GET_IPADDR_STRING(msg_data));
+
+ msg_data += addr_size;
+ msg_tlen -= addr_size;
}
break;
+ }
case OLSR_HNA_MSG:
- prefix = 1;
- printf("\n\t advertised networks\n\t ");
- while (msg_tlen >= sizeof(struct olsr_hna)) {
- if (!TTEST2(*msg_data, sizeof(struct olsr_hna)))
- goto trunc;
+ if (is_ipv6) {
+ int i = 0;
+
+ ND_PRINT("\n\t Advertised networks (total %u)",
+ (unsigned int) (msg_tlen / sizeof(struct olsr_hna6)));
+
+ while (msg_tlen >= sizeof(struct olsr_hna6)) {
+ const struct olsr_hna6 *hna6;
- ptr.hna = (struct olsr_hna *)msg_data;
+ ND_TCHECK_LEN(msg_data, sizeof(struct olsr_hna6));
- /* print 4 prefixes per line */
+ hna6 = (const struct olsr_hna6 *)msg_data;
- printf("%s/%u%s",
- ipaddr_string(ptr.hna->network),
- mask2plen(EXTRACT_32BITS(ptr.hna->mask)),
- prefix % 4 == 0 ? "\n\t " : " ");
+ ND_PRINT("\n\t #%i: %s/%u",
+ i, GET_IP6ADDR_STRING(hna6->network),
+ mask62plen (hna6->mask));
- msg_data += sizeof(struct olsr_hna);
- msg_tlen -= sizeof(struct olsr_hna);
- prefix ++;
+ msg_data += sizeof(struct olsr_hna6);
+ msg_tlen -= sizeof(struct olsr_hna6);
+ }
+ } else {
+ int col = 0;
+
+ ND_PRINT("\n\t Advertised networks (total %u)",
+ (unsigned int) (msg_tlen / sizeof(struct olsr_hna4)));
+
+ while (msg_tlen >= sizeof(struct olsr_hna4)) {
+ ND_TCHECK_LEN(msg_data, sizeof(struct olsr_hna4));
+
+ ptr.hna = (const struct olsr_hna4 *)msg_data;
+
+ /* print 4 prefixes per line */
+ if (!ptr.hna->network[0] && !ptr.hna->network[1] &&
+ !ptr.hna->network[2] && !ptr.hna->network[3] &&
+ !ptr.hna->mask[GW_HNA_PAD] &&
+ ptr.hna->mask[GW_HNA_FLAGS]) {
+ /* smart gateway */
+ ND_PRINT("%sSmart-Gateway:%s%s%s%s%s %u/%u",
+ col == 0 ? "\n\t " : ", ", /* indent */
+ /* sgw */
+ /* LINKSPEED */
+ (ptr.hna->mask[GW_HNA_FLAGS] &
+ GW_HNA_FLAG_LINKSPEED) ? " LINKSPEED" : "",
+ /* IPV4 */
+ (ptr.hna->mask[GW_HNA_FLAGS] &
+ GW_HNA_FLAG_IPV4) ? " IPV4" : "",
+ /* IPV4-NAT */
+ (ptr.hna->mask[GW_HNA_FLAGS] &
+ GW_HNA_FLAG_IPV4_NAT) ? " IPV4-NAT" : "",
+ /* IPV6 */
+ (ptr.hna->mask[GW_HNA_FLAGS] &
+ GW_HNA_FLAG_IPV6) ? " IPV6" : "",
+ /* IPv6PREFIX */
+ (ptr.hna->mask[GW_HNA_FLAGS] &
+ GW_HNA_FLAG_IPV6PREFIX) ? " IPv6-PREFIX" : "",
+ /* uplink */
+ (ptr.hna->mask[GW_HNA_FLAGS] &
+ GW_HNA_FLAG_LINKSPEED) ?
+ deserialize_gw_speed(ptr.hna->mask[GW_HNA_UPLINK]) : 0,
+ /* downlink */
+ (ptr.hna->mask[GW_HNA_FLAGS] &
+ GW_HNA_FLAG_LINKSPEED) ?
+ deserialize_gw_speed(ptr.hna->mask[GW_HNA_DOWNLINK]) : 0
+ );
+ } else {
+ /* normal route */
+ ND_PRINT("%s%s/%u",
+ col == 0 ? "\n\t " : ", ",
+ GET_IPADDR_STRING(ptr.hna->network),
+ mask2plen(GET_BE_U_4(ptr.hna->mask)));
+ }
+
+ msg_data += sizeof(struct olsr_hna4);
+ msg_tlen -= sizeof(struct olsr_hna4);
+
+ col = (col + 1) % 4;
+ }
}
break;
case OLSR_NAMESERVICE_MSG:
- name_entries = EXTRACT_16BITS(msg_data+2);
- printf("\n\t Version %u, Entries %u",
- EXTRACT_16BITS(msg_data), name_entries);
+ {
+ u_int name_entries;
+ u_int addr_size;
+ int name_entries_valid;
+ u_int i;
+
+ ND_ICHECKMSG_U("message length", msg_tlen, <, 4);
+
+ name_entries = GET_BE_U_2(msg_data + 2);
+ addr_size = 4;
+ if (is_ipv6)
+ addr_size = 16;
+
+ name_entries_valid = 0;
+ if ((name_entries > 0)
+ && ((name_entries * (4 + addr_size)) <= msg_tlen))
+ name_entries_valid = 1;
+
+ ND_PRINT("\n\t Version %u, Entries %u%s",
+ GET_BE_U_2(msg_data),
+ name_entries, (name_entries_valid == 0) ? " (invalid)" : "");
+
+ if (name_entries_valid == 0)
+ break;
+
msg_data += 4;
msg_tlen -= 4;
- while (name_entries && msg_tlen) {
+ for (i = 0; i < name_entries; i++) {
+ int name_entry_len_valid = 0;
- name_entry_type = EXTRACT_16BITS(msg_data);
- name_entry_len = EXTRACT_16BITS(msg_data+2);
- msg_data += 4;
- msg_tlen -= 4;
+ if (msg_tlen < 4)
+ break;
- printf("\n\t #%u Name Entry, length %u",
- name_entry_type,
- name_entry_len);
+ name_entry_type = GET_BE_U_2(msg_data);
+ name_entry_len = GET_BE_U_2(msg_data + 2);
- printf(", originator %s", ipaddr_string(msg_data));
+ msg_data += 4;
+ msg_tlen -= 4;
- /* 32-bit alignement */
- if (name_entry_len%4 != 0)
- name_entry_len+=4-(name_entry_len%4);
+ if ((name_entry_len > 0) && ((addr_size + name_entry_len) <= msg_tlen))
+ name_entry_len_valid = 1;
+ ND_PRINT("\n\t #%u: type %#06x, length %u%s",
+ (unsigned int) i, name_entry_type,
+ name_entry_len, (name_entry_len_valid == 0) ? " (invalid)" : "");
- msg_data += name_entry_len;
- msg_tlen -= name_entry_len;
+ if (name_entry_len_valid == 0)
+ break;
- name_entries--;
- }
+ /* 32-bit alignment */
+ name_entry_padding = 0;
+ if (name_entry_len%4 != 0)
+ name_entry_padding = 4-(name_entry_len%4);
+
+ ND_ICHECKMSG_U("name entry length", msg_tlen, <,
+ addr_size + name_entry_len + name_entry_padding);
+
+ ND_TCHECK_LEN(msg_data,
+ addr_size + name_entry_len + name_entry_padding);
+
+ if (is_ipv6)
+ ND_PRINT(", address %s, name \"",
+ GET_IP6ADDR_STRING(msg_data));
+ else
+ ND_PRINT(", address %s, name \"",
+ GET_IPADDR_STRING(msg_data));
+ nd_printjn(ndo, msg_data + addr_size, name_entry_len);
+ ND_PRINT("\"");
+
+ msg_data += addr_size + name_entry_len + name_entry_padding;
+ msg_tlen -= addr_size + name_entry_len + name_entry_padding;
+ } /* for (i = 0; i < name_entries; i++) */
break;
+ } /* case OLSR_NAMESERVICE_MSG */
/*
* FIXME those are the defined messages that lack a decoder
*/
case OLSR_POWERINFO_MSG:
default:
- print_unknown_data(msg_data, "\n\t ", msg_tlen);
+ print_unknown_data(ndo, msg_data, "\n\t ", msg_tlen);
break;
- }
+ } /* switch (msg_type) */
tptr += msg_len;
- }
+ } /* while (tptr < (pptr+length)) */
return;
- trunc:
- printf("[|olsr]");
+invalid:
+ nd_print_invalid(ndo);
}
-
-/*
- * Local Variables:
- * c-style: whitesmith
- * c-basic-offset: 4
- * End:
- */
projects / tcpdump / blobdiff