forked from the-tcpdump-group/tcpdump
-
Notifications
You must be signed in to change notification settings - Fork 0
/
print-ipnet.c
127 lines (102 loc) · 2.73 KB
/
print-ipnet.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
/* \summary: Solaris DLT_IPNET printer */
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "netdissect-stdinc.h"
#include "netdissect.h"
#include "extract.h"
static const char tstr[] = "[|ipnet]";
typedef struct ipnet_hdr {
nd_uint8_t iph_version;
nd_uint8_t iph_family;
nd_uint16_t iph_htype;
nd_uint32_t iph_pktlen;
nd_uint32_t iph_ifindex;
nd_uint32_t iph_grifindex;
nd_uint32_t iph_zsrc;
nd_uint32_t iph_zdst;
} ipnet_hdr_t;
#define IPH_AF_INET 2 /* Matches Solaris's AF_INET */
#define IPH_AF_INET6 26 /* Matches Solaris's AF_INET6 */
#ifdef DLT_IPNET
static const struct tok ipnet_values[] = {
{ IPH_AF_INET, "IPv4" },
{ IPH_AF_INET6, "IPv6" },
{ 0, NULL }
};
static inline void
ipnet_hdr_print(netdissect_options *ndo, const u_char *bp, u_int length)
{
const ipnet_hdr_t *hdr;
hdr = (const ipnet_hdr_t *)bp;
ND_TCHECK_SIZE(hdr);
ND_PRINT("%u > %u", EXTRACT_BE_U_4(hdr->iph_zsrc),
EXTRACT_BE_U_4(hdr->iph_zdst));
if (!ndo->ndo_qflag) {
ND_PRINT(", family %s (%u)",
tok2str(ipnet_values, "Unknown",
EXTRACT_U_1(hdr->iph_family)),
EXTRACT_U_1(hdr->iph_family));
} else {
ND_PRINT(", %s",
tok2str(ipnet_values,
"Unknown Ethertype (0x%04x)",
EXTRACT_U_1(hdr->iph_family)));
}
ND_PRINT(", length %u: ", length);
return;
trunc:
ND_PRINT(" %s", tstr);
}
static void
ipnet_print(netdissect_options *ndo, const u_char *p, u_int length, u_int caplen)
{
const ipnet_hdr_t *hdr;
if (caplen < sizeof(ipnet_hdr_t))
goto trunc;
if (ndo->ndo_eflag)
ipnet_hdr_print(ndo, p, length);
length -= sizeof(ipnet_hdr_t);
caplen -= sizeof(ipnet_hdr_t);
hdr = (const ipnet_hdr_t *)p;
p += sizeof(ipnet_hdr_t);
ND_TCHECK_1(hdr->iph_family);
switch (EXTRACT_U_1(hdr->iph_family)) {
case IPH_AF_INET:
ip_print(ndo, p, length);
break;
case IPH_AF_INET6:
ip6_print(ndo, p, length);
break;
default:
if (!ndo->ndo_eflag)
ipnet_hdr_print(ndo, (const u_char *)hdr,
length + sizeof(ipnet_hdr_t));
if (!ndo->ndo_suppress_default_print)
ND_DEFAULTPRINT(p, caplen);
break;
}
return;
trunc:
ND_PRINT(" %s", tstr);
}
/*
* This is the top level routine of the printer. 'p' points
* to the ether header of the packet, 'h->ts' is the timestamp,
* 'h->len' is the length of the packet off the wire, and 'h->caplen'
* is the number of bytes actually captured.
*/
u_int
ipnet_if_print(netdissect_options *ndo,
const struct pcap_pkthdr *h, const u_char *p)
{
ipnet_print(ndo, p, h->len, h->caplen);
return (sizeof(ipnet_hdr_t));
}
/*
* Local Variables:
* c-style: whitesmith
* c-basic-offset: 8
* End:
*/
#endif /* DLT_IPNET */