1 /* \summary: Solaris DLT_IPNET printer */
2
3 #include <config.h>
4
5 #include "netdissect-stdinc.h"
6
7 #define ND_LONGJMP_FROM_TCHECK
8 #include "netdissect.h"
9 #include "extract.h"
10
11
12 typedef struct ipnet_hdr {
13 nd_uint8_t iph_version;
14 nd_uint8_t iph_family;
15 nd_uint16_t iph_htype;
16 nd_uint32_t iph_pktlen;
17 nd_uint32_t iph_ifindex;
18 nd_uint32_t iph_grifindex;
19 nd_uint32_t iph_zsrc;
20 nd_uint32_t iph_zdst;
21 } ipnet_hdr_t;
22
23 #define IPH_AF_INET 2 /* Matches Solaris's AF_INET */
24 #define IPH_AF_INET6 26 /* Matches Solaris's AF_INET6 */
25
26 #ifdef DLT_IPNET
27
28 static const struct tok ipnet_values[] = {
29 { IPH_AF_INET, "IPv4" },
30 { IPH_AF_INET6, "IPv6" },
31 { 0, NULL }
32 };
33
34 static void
ipnet_hdr_print(netdissect_options * ndo,const u_char * bp,u_int length)35 ipnet_hdr_print(netdissect_options *ndo, const u_char *bp, u_int length)
36 {
37 const ipnet_hdr_t *hdr;
38 hdr = (const ipnet_hdr_t *)bp;
39
40 ND_PRINT("%u > %u", GET_BE_U_4(hdr->iph_zsrc),
41 GET_BE_U_4(hdr->iph_zdst));
42
43 if (!ndo->ndo_qflag) {
44 ND_PRINT(", family %s (%u)",
45 tok2str(ipnet_values, "Unknown",
46 GET_U_1(hdr->iph_family)),
47 GET_U_1(hdr->iph_family));
48 } else {
49 ND_PRINT(", %s",
50 tok2str(ipnet_values,
51 "Unknown Ethertype (0x%04x)",
52 GET_U_1(hdr->iph_family)));
53 }
54
55 ND_PRINT(", length %u: ", length);
56 }
57
58 static void
ipnet_print(netdissect_options * ndo,const u_char * p,u_int length,u_int caplen)59 ipnet_print(netdissect_options *ndo, const u_char *p, u_int length, u_int caplen)
60 {
61 const ipnet_hdr_t *hdr;
62
63 ND_TCHECK_LEN(p, sizeof(ipnet_hdr_t));
64 ndo->ndo_ll_hdr_len += sizeof(ipnet_hdr_t);
65
66 if (ndo->ndo_eflag)
67 ipnet_hdr_print(ndo, p, length);
68
69 length -= sizeof(ipnet_hdr_t);
70 caplen -= sizeof(ipnet_hdr_t);
71 hdr = (const ipnet_hdr_t *)p;
72 p += sizeof(ipnet_hdr_t);
73
74 switch (GET_U_1(hdr->iph_family)) {
75
76 case IPH_AF_INET:
77 ip_print(ndo, p, length);
78 break;
79
80 case IPH_AF_INET6:
81 ip6_print(ndo, p, length);
82 break;
83
84 default:
85 if (!ndo->ndo_eflag)
86 ipnet_hdr_print(ndo, (const u_char *)hdr,
87 length + sizeof(ipnet_hdr_t));
88
89 if (!ndo->ndo_suppress_default_print)
90 ND_DEFAULTPRINT(p, caplen);
91 break;
92 }
93 }
94
95 /*
96 * This is the top level routine of the printer. 'p' points
97 * to the ether header of the packet, 'h->ts' is the timestamp,
98 * 'h->len' is the length of the packet off the wire, and 'h->caplen'
99 * is the number of bytes actually captured.
100 */
101 void
ipnet_if_print(netdissect_options * ndo,const struct pcap_pkthdr * h,const u_char * p)102 ipnet_if_print(netdissect_options *ndo,
103 const struct pcap_pkthdr *h, const u_char *p)
104 {
105 ndo->ndo_protocol = "ipnet";
106 ipnet_print(ndo, p, h->len, h->caplen);
107 }
108 #endif /* DLT_IPNET */
109