#include "netdissect-stdinc.h"
+#define ND_LONGJMP_FROM_TCHECK
#include "netdissect.h"
#include "addrtoname.h"
#include "extract.h"
/*
* 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)
{
msg_data += sizeof(struct olsr_lq_neighbor4);
hello_len -= sizeof(struct olsr_lq_neighbor4);
}
- return (0);
-trunc:
- return -1;
}
-static int
+static void
olsr_print_lq_neighbor6(netdissect_options *ndo,
const u_char *msg_data, u_int hello_len)
{
msg_data += sizeof(struct olsr_lq_neighbor6);
hello_len -= sizeof(struct olsr_lq_neighbor6);
}
- return (0);
-trunc:
- return -1;
}
/*
* print a neighbor list.
*/
-static int
+static void
olsr_print_neighbor(netdissect_options *ndo,
const u_char *msg_data, u_int hello_len)
{
neighbor = 1;
while (hello_len >= sizeof(nd_ipv4)) {
-
- ND_TCHECK_LEN(msg_data, sizeof(nd_ipv4));
/* print 4 neighbors per line */
-
ND_PRINT("%s%s", GET_IPADDR_STRING(msg_data),
neighbor % 4 == 0 ? "\n\t\t" : " ");
msg_data += sizeof(nd_ipv4);
hello_len -= sizeof(nd_ipv4);
}
- return (0);
-trunc:
- return -1;
}
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_TCHECK_LEN(tptr, sizeof(struct olsr_common));
+ ND_LCHECKMSG_ZU(length, sizeof(struct olsr_common), "packet length");
ptr.common = (const struct olsr_common *)tptr;
- length = min(length, GET_BE_U_2(ptr.common->packet_len));
+ length = ND_MIN(length, GET_BE_U_2(ptr.common->packet_len));
- ND_PRINT("OLSRv%i, seq 0x%04x, length %u",
- (is_ipv6 == 0) ? 4 : 6,
+ ND_PRINT(", seq 0x%04x, length %u",
GET_BE_U_2(ptr.common->packet_seq),
length);
switch (msg_type) {
case OLSR_HELLO_MSG:
case OLSR_HELLO_LQ_MSG:
- if (msg_tlen < sizeof(struct olsr_hello))
- goto trunc;
- ND_TCHECK_LEN(msg_data, sizeof(struct olsr_hello));
+ ND_LCHECKMSG_ZU(msg_tlen, sizeof(struct olsr_hello), "message length");
ptr.hello = (const struct olsr_hello *)msg_data;
ND_PRINT("\n\t hello-time %.3fs, MPR willingness %u",
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 (is_ipv6) {
- if (olsr_print_lq_neighbor6(ndo, msg_data, hello_len) == -1)
- goto trunc;
+ olsr_print_lq_neighbor6(ndo, msg_data, hello_len);
} else {
- if (olsr_print_lq_neighbor4(ndo, msg_data, hello_len) == -1)
- goto trunc;
+ 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_LCHECKMSG_ZU(msg_tlen, sizeof(struct olsr_tc), "message length");
ND_TCHECK_LEN(msg_data, sizeof(struct olsr_tc));
ptr.tc = (const struct olsr_tc *)msg_data;
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 (is_ipv6) {
- if (olsr_print_lq_neighbor6(ndo, msg_data, msg_tlen) == -1)
- goto trunc;
+ olsr_print_lq_neighbor6(ndo, msg_data, msg_tlen);
} else {
- if (olsr_print_lq_neighbor4(ndo, msg_data, msg_tlen) == -1)
- goto trunc;
+ olsr_print_lq_neighbor4(ndo, msg_data, msg_tlen);
}
}
break;
int name_entries_valid;
u_int i;
- if (msg_tlen < 4)
- goto trunc;
- ND_TCHECK_4(msg_data);
+ ND_LCHECKMSG_U(msg_tlen, 4, "message length");
name_entries = GET_BE_U_2(msg_data + 2);
addr_size = 4;
if (msg_tlen < 4)
break;
- ND_TCHECK_4(msg_data);
name_entry_type = GET_BE_U_2(msg_data);
name_entry_len = GET_BE_U_2(msg_data + 2);
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_LCHECKMSG_U(msg_tlen, addr_size + name_entry_len + name_entry_padding,
+ "name entry length");
ND_TCHECK_LEN(msg_data,
addr_size + name_entry_len + name_entry_padding);
else
ND_PRINT(", address %s, name \"",
GET_IPADDR_STRING(msg_data));
- (void)nd_printn(ndo, msg_data + addr_size, name_entry_len, NULL);
+ nd_printjn(ndo, msg_data + addr_size, name_entry_len);
ND_PRINT("\"");
msg_data += addr_size + name_entry_len + name_entry_padding;
return;
- trunc:
- nd_print_trunc(ndo);
+invalid:
+ nd_print_invalid(ndo);
}