* 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 "interface.h"
+#include "netdissect-stdinc.h"
+
+#define ND_LONGJMP_FROM_TCHECK
+#include "netdissect.h"
#include "addrtoname.h"
#include "extract.h"
*/
struct olsr_common {
- uint8_t packet_len[2];
- uint8_t packet_seq[2];
+ nd_uint16_t packet_len;
+ nd_uint16_t packet_seq;
};
#define OLSR_HELLO_MSG 1 /* rfc3626 */
};
struct olsr_msg4 {
- uint8_t msg_type;
- uint8_t vtime;
- uint8_t msg_len[2];
- uint8_t originator[4];
- uint8_t ttl;
- uint8_t hopcount;
- uint8_t msg_seq[2];
+ 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 {
- uint8_t msg_type;
- uint8_t vtime;
- uint8_t msg_len[2];
- uint8_t originator[16];
- uint8_t ttl;
- uint8_t hopcount;
- uint8_t msg_seq[2];
+ 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 {
- uint8_t res[2];
- uint8_t htime;
- uint8_t will;
+ nd_byte res[2];
+ nd_uint8_t htime;
+ nd_uint8_t will;
};
struct olsr_hello_link {
- uint8_t link_code;
- uint8_t res;
- uint8_t len[2];
+ nd_uint8_t link_code;
+ nd_byte res;
+ nd_uint16_t len;
};
struct olsr_tc {
- uint8_t ans_seq[2];
- uint8_t res[2];
+ nd_uint16_t ans_seq;
+ nd_byte res[2];
};
struct olsr_hna4 {
- uint8_t network[4];
- uint8_t mask[4];
+ nd_ipv4 network;
+ nd_ipv4 mask;
};
struct olsr_hna6 {
- uint8_t network[16];
- uint8_t mask[16];
+ 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
};
};
struct olsr_lq_neighbor4 {
- uint8_t neighbor[4];
- uint8_t link_quality;
- uint8_t neighbor_link_quality;
- uint8_t res[2];
+ nd_ipv4 neighbor;
+ nd_uint8_t link_quality;
+ nd_uint8_t neighbor_link_quality;
+ nd_byte res[2];
};
struct olsr_lq_neighbor6 {
- uint8_t neighbor[16];
- uint8_t link_quality;
- uint8_t neighbor_link_quality;
- uint8_t res[2];
+ 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 int
+static void
olsr_print_lq_neighbor4(netdissect_options *ndo,
const u_char *msg_data, u_int hello_len)
{
while (hello_len >= sizeof(struct olsr_lq_neighbor4)) {
lq_neighbor = (const struct olsr_lq_neighbor4 *)msg_data;
- if (!ND_TTEST(*lq_neighbor))
- return (-1);
+ ND_TCHECK_SIZE(lq_neighbor);
- ND_PRINT((ndo, "\n\t neighbor %s, link-quality %.2lf%%"
- ", neighbor-link-quality %.2lf%%",
- ipaddr_string(ndo, 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_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);
}
- return (0);
}
-#if INET6
-static int
+static void
olsr_print_lq_neighbor6(netdissect_options *ndo,
const u_char *msg_data, u_int hello_len)
{
while (hello_len >= sizeof(struct olsr_lq_neighbor6)) {
lq_neighbor = (const struct olsr_lq_neighbor6 *)msg_data;
- if (!ND_TTEST(*lq_neighbor))
- return (-1);
+ ND_TCHECK_SIZE(lq_neighbor);
- ND_PRINT((ndo, "\n\t neighbor %s, link-quality %.2lf%%"
- ", neighbor-link-quality %.2lf%%",
- ip6addr_string(ndo, 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_neighbor6);
hello_len -= sizeof(struct olsr_lq_neighbor6);
}
- return (0);
}
-#endif /* INET6 */
/*
* print a neighbor list.
*/
-static int
+static void
olsr_print_neighbor(netdissect_options *ndo,
const u_char *msg_data, u_int hello_len)
{
int neighbor;
- ND_PRINT((ndo, "\n\t neighbor\n\t\t"));
+ ND_PRINT("\n\t neighbor\n\t\t");
neighbor = 1;
- while (hello_len >= sizeof(struct in_addr)) {
-
- if (!ND_TTEST2(*msg_data, sizeof(struct in_addr)))
- return (-1);
+ while (hello_len >= sizeof(nd_ipv4)) {
/* print 4 neighbors per line */
+ ND_PRINT("%s%s", GET_IPADDR_STRING(msg_data),
+ neighbor % 4 == 0 ? "\n\t\t" : " ");
- ND_PRINT((ndo, "%s%s", ipaddr_string(ndo, 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);
}
- return (0);
}
uint8_t link_type, neighbor_type;
const u_char *tptr, *msg_data;
+ 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);
- ND_TCHECK2(*tptr, sizeof(struct olsr_common));
+ ND_ICHECKMSG_ZU("packet length", length, <, sizeof(struct olsr_common));
ptr.common = (const struct olsr_common *)tptr;
- length = min(length, EXTRACT_16BITS(ptr.common->packet_len));
+ length = ND_MIN(length, GET_BE_U_2(ptr.common->packet_len));
- ND_PRINT((ndo, "OLSRv%i, seq 0x%04x, length %u",
- (is_ipv6 == 0) ? 4 : 6,
- 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);
} msgptr;
int msg_len_valid = 0;
- ND_TCHECK2(*tptr, sizeof(struct olsr_msg4));
-
-#if INET6
- if (is_ipv6)
- {
+ if (is_ipv6) {
+ ND_TCHECK_LEN(tptr, sizeof(struct olsr_msg6));
msgptr.v6 = (const struct olsr_msg6 *) tptr;
- msg_type = msgptr.v6->msg_type;
- msg_len = EXTRACT_16BITS(msgptr.v6->msg_len);
+ 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;
return;
}
- ND_PRINT((ndo, "\n\t%s Message (%#04x), originator %s, ttl %u, hop %u"
- "\n\t vtime %.3lfs, msg-seq 0x%04x, length %u%s",
+ 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, ip6addr_string(ndo, msgptr.v6->originator),
- msgptr.v6->ttl,
- msgptr.v6->hopcount,
- ME_TO_DOUBLE(msgptr.v6->vtime),
- EXTRACT_16BITS(msgptr.v6->msg_seq),
- msg_len, (msg_len_valid == 0) ? " (invalid)" : ""));
+ 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;
}
msg_tlen = msg_len - sizeof(struct olsr_msg6);
msg_data = tptr + sizeof(struct olsr_msg6);
- }
- else /* (!is_ipv6) */
-#endif /* INET6 */
- {
+ } else { /* (!is_ipv6) */
+ ND_TCHECK_LEN(tptr, sizeof(struct olsr_msg4));
msgptr.v4 = (const struct olsr_msg4 *) tptr;
- msg_type = msgptr.v4->msg_type;
- msg_len = EXTRACT_16BITS(msgptr.v4->msg_len);
+ 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;
return;
}
- ND_PRINT((ndo, "\n\t%s Message (%#04x), originator %s, ttl %u, hop %u"
- "\n\t vtime %.3lfs, msg-seq 0x%04x, length %u%s",
+ 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, ipaddr_string(ndo, msgptr.v4->originator),
- msgptr.v4->ttl,
- msgptr.v4->hopcount,
- ME_TO_DOUBLE(msgptr.v4->vtime),
- EXTRACT_16BITS(msgptr.v4->msg_seq),
- msg_len, (msg_len_valid == 0) ? " (invalid)" : ""));
+ 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;
}
switch (msg_type) {
case OLSR_HELLO_MSG:
case OLSR_HELLO_LQ_MSG:
- if (msg_tlen < sizeof(struct olsr_hello))
- goto trunc;
- ND_TCHECK2(*msg_data, sizeof(struct olsr_hello));
+ ND_ICHECKMSG_ZU("message length", msg_tlen, <,
+ sizeof(struct olsr_hello));
ptr.hello = (const struct olsr_hello *)msg_data;
- ND_PRINT((ndo, "\n\t hello-time %.3lfs, MPR willingness %u",
- ME_TO_DOUBLE(ptr.hello->htime), ptr.hello->will));
+ 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);
/*
* link-type.
*/
- ND_TCHECK2(*msg_data, sizeof(struct olsr_hello_link));
+ ND_TCHECK_LEN(msg_data, sizeof(struct olsr_hello_link));
ptr.hello_link = (const struct olsr_hello_link *)msg_data;
- 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);
+ 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));
if ((hello_len <= msg_tlen)
&& (hello_len >= sizeof(struct olsr_hello_link)))
hello_len_valid = 1;
- ND_PRINT((ndo, "\n\t link-type %s, neighbor-type %s, len %u%s",
+ 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_valid == 0) ? " (invalid)" : ""));
+ (hello_len_valid == 0) ? " (invalid)" : "");
if (hello_len_valid == 0)
break;
msg_tlen -= sizeof(struct olsr_hello_link);
hello_len -= sizeof(struct olsr_hello_link);
- ND_TCHECK2(*msg_data, hello_len);
+ ND_TCHECK_LEN(msg_data, hello_len);
if (msg_type == OLSR_HELLO_MSG) {
- if (olsr_print_neighbor(ndo, msg_data, hello_len) == -1)
- goto trunc;
+ olsr_print_neighbor(ndo, msg_data, hello_len);
} else {
-#if INET6
if (is_ipv6) {
- if (olsr_print_lq_neighbor6(ndo, msg_data, hello_len) == -1)
- goto trunc;
- } else
-#endif
- {
- if (olsr_print_lq_neighbor4(ndo, msg_data, hello_len) == -1)
- goto trunc;
+ olsr_print_lq_neighbor6(ndo, msg_data, hello_len);
+ } else {
+ olsr_print_lq_neighbor4(ndo, msg_data, hello_len);
}
}
case OLSR_TC_MSG:
case OLSR_TC_LQ_MSG:
- if (msg_tlen < sizeof(struct olsr_tc))
- goto trunc;
- ND_TCHECK2(*msg_data, sizeof(struct olsr_tc));
+ ND_ICHECKMSG_ZU("message length", msg_tlen, <,
+ sizeof(struct olsr_tc));
+ ND_TCHECK_LEN(msg_data, sizeof(struct olsr_tc));
ptr.tc = (const struct olsr_tc *)msg_data;
- ND_PRINT((ndo, "\n\t advertised neighbor seq 0x%04x",
- EXTRACT_16BITS(ptr.tc->ans_seq)));
+ 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) {
- if (olsr_print_neighbor(ndo, msg_data, msg_tlen) == -1)
- goto trunc;
+ olsr_print_neighbor(ndo, msg_data, msg_tlen);
} else {
-#if INET6
if (is_ipv6) {
- if (olsr_print_lq_neighbor6(ndo, msg_data, msg_tlen) == -1)
- goto trunc;
- } else
-#endif
- {
- if (olsr_print_lq_neighbor4(ndo, msg_data, msg_tlen) == -1)
- goto trunc;
+ olsr_print_lq_neighbor6(ndo, msg_data, msg_tlen);
+ } else {
+ olsr_print_lq_neighbor4(ndo, msg_data, msg_tlen);
}
}
break;
case OLSR_MID_MSG:
{
- size_t addr_size = sizeof(struct in_addr);
+ u_int addr_size = (u_int)sizeof(nd_ipv4);
-#if INET6
if (is_ipv6)
- addr_size = sizeof(struct in6_addr);
-#endif
+ addr_size = (u_int)sizeof(nd_ipv6);
while (msg_tlen >= addr_size) {
- ND_TCHECK2(*msg_data, addr_size);
-#if INET6
- ND_PRINT((ndo, "\n\t interface address %s",
- is_ipv6 ? ip6addr_string(ndo, msg_data) :
- ipaddr_string(ndo, msg_data)));
-#else
- ND_PRINT((ndo, "\n\t interface address %s",
- ipaddr_string(ndo, msg_data)));
-#endif
+ 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;
}
case OLSR_HNA_MSG:
-#if INET6
- if (is_ipv6)
- {
+ if (is_ipv6) {
int i = 0;
- ND_PRINT((ndo, "\n\t Advertised networks (total %u)",
- (unsigned int) (msg_tlen / sizeof(struct olsr_hna6))));
+ 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;
- ND_TCHECK2(*msg_data, sizeof(struct olsr_hna6));
+ ND_TCHECK_LEN(msg_data, sizeof(struct olsr_hna6));
hna6 = (const struct olsr_hna6 *)msg_data;
- ND_PRINT((ndo, "\n\t #%i: %s/%u",
- i, ip6addr_string(ndo, hna6->network),
- mask62plen (hna6->mask)));
+ ND_PRINT("\n\t #%i: %s/%u",
+ i, GET_IP6ADDR_STRING(hna6->network),
+ mask62plen (hna6->mask));
msg_data += sizeof(struct olsr_hna6);
msg_tlen -= sizeof(struct olsr_hna6);
}
- }
- else
-#endif
- {
+ } else {
int col = 0;
- ND_PRINT((ndo, "\n\t Advertised networks (total %u)",
- (unsigned int) (msg_tlen / sizeof(struct olsr_hna4))));
+ ND_PRINT("\n\t Advertised networks (total %u)",
+ (unsigned int) (msg_tlen / sizeof(struct olsr_hna4)));
while (msg_tlen >= sizeof(struct olsr_hna4)) {
- ND_TCHECK2(*msg_data, 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 */
- ND_PRINT((ndo, "%s%s/%u",
- col == 0 ? "\n\t " : ", ",
- ipaddr_string(ndo, ptr.hna->network),
- mask2plen(EXTRACT_32BITS(ptr.hna->mask))));
+ 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);
case OLSR_NAMESERVICE_MSG:
{
- u_int name_entries = EXTRACT_16BITS(msg_data+2);
- u_int addr_size = 4;
- int name_entries_valid = 0;
+ 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;
- if (msg_tlen < 4)
- goto trunc;
- ND_TCHECK2(*msg_data, 4);
-
- ND_PRINT((ndo, "\n\t Version %u, Entries %u%s",
- EXTRACT_16BITS(msg_data),
- name_entries, (name_entries_valid == 0) ? " (invalid)" : ""));
+ 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;
if (msg_tlen < 4)
break;
- ND_TCHECK2(*msg_data, 4);
- name_entry_type = EXTRACT_16BITS(msg_data);
- name_entry_len = EXTRACT_16BITS(msg_data+2);
+ name_entry_type = GET_BE_U_2(msg_data);
+ name_entry_len = GET_BE_U_2(msg_data + 2);
msg_data += 4;
msg_tlen -= 4;
if ((name_entry_len > 0) && ((addr_size + name_entry_len) <= msg_tlen))
name_entry_len_valid = 1;
- ND_PRINT((ndo, "\n\t #%u: type %#06x, length %u%s",
+ 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)" : ""));
+ name_entry_len, (name_entry_len_valid == 0) ? " (invalid)" : "");
if (name_entry_len_valid == 0)
break;
if (name_entry_len%4 != 0)
name_entry_padding = 4-(name_entry_len%4);
- if (msg_tlen < addr_size + name_entry_len + name_entry_padding)
- goto trunc;
+ ND_ICHECKMSG_U("name entry length", msg_tlen, <,
+ addr_size + name_entry_len + name_entry_padding);
- ND_TCHECK2(*msg_data, addr_size + name_entry_len + name_entry_padding);
+ ND_TCHECK_LEN(msg_data,
+ addr_size + name_entry_len + name_entry_padding);
-#if INET6
if (is_ipv6)
- ND_PRINT((ndo, ", address %s, name \"",
- ip6addr_string(ndo, msg_data)));
+ ND_PRINT(", address %s, name \"",
+ GET_IP6ADDR_STRING(msg_data));
else
-#endif
- ND_PRINT((ndo, ", address %s, name \"",
- ipaddr_string(ndo, msg_data)));
- (void)fn_printn(ndo, msg_data + addr_size, name_entry_len, NULL);
- ND_PRINT((ndo, "\""));
+ 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;
return;
- trunc:
- ND_PRINT((ndo, "[|olsr]"));
+invalid:
+ nd_print_invalid(ndo);
}
-
-/*
- * Local Variables:
- * c-style: whitesmith
- * c-basic-offset: 4
- * End:
- */
projects / tcpdump / blobdiff