1 2 #include <sys/cdefs.h> 3 #ifndef lint 4 __RCSID("$NetBSD: print-ipnet.c,v 1.6 2024/09/02 16:15:31 christos Exp $"); 5 #endif 6 7 /* \summary: Solaris DLT_IPNET printer */ 8 9 #include <config.h> 10 11 #include "netdissect-stdinc.h" 12 13 #define ND_LONGJMP_FROM_TCHECK 14 #include "netdissect.h" 15 #include "extract.h" 16 17 18 typedef struct ipnet_hdr { 19 nd_uint8_t iph_version; 20 nd_uint8_t iph_family; 21 nd_uint16_t iph_htype; 22 nd_uint32_t iph_pktlen; 23 nd_uint32_t iph_ifindex; 24 nd_uint32_t iph_grifindex; 25 nd_uint32_t iph_zsrc; 26 nd_uint32_t iph_zdst; 27 } ipnet_hdr_t; 28 29 #define IPH_AF_INET 2 /* Matches Solaris's AF_INET */ 30 #define IPH_AF_INET6 26 /* Matches Solaris's AF_INET6 */ 31 32 #ifdef DLT_IPNET 33 34 static const struct tok ipnet_values[] = { 35 { IPH_AF_INET, "IPv4" }, 36 { IPH_AF_INET6, "IPv6" }, 37 { 0, NULL } 38 }; 39 40 static void 41 ipnet_hdr_print(netdissect_options *ndo, const u_char *bp, u_int length) 42 { 43 const ipnet_hdr_t *hdr; 44 hdr = (const ipnet_hdr_t *)bp; 45 46 ND_PRINT("%u > %u", GET_BE_U_4(hdr->iph_zsrc), 47 GET_BE_U_4(hdr->iph_zdst)); 48 49 if (!ndo->ndo_qflag) { 50 ND_PRINT(", family %s (%u)", 51 tok2str(ipnet_values, "Unknown", 52 GET_U_1(hdr->iph_family)), 53 GET_U_1(hdr->iph_family)); 54 } else { 55 ND_PRINT(", %s", 56 tok2str(ipnet_values, 57 "Unknown Ethertype (0x%04x)", 58 GET_U_1(hdr->iph_family))); 59 } 60 61 ND_PRINT(", length %u: ", length); 62 } 63 64 static void 65 ipnet_print(netdissect_options *ndo, const u_char *p, u_int length, u_int caplen) 66 { 67 const ipnet_hdr_t *hdr; 68 69 ND_TCHECK_LEN(p, sizeof(ipnet_hdr_t)); 70 ndo->ndo_ll_hdr_len += sizeof(ipnet_hdr_t); 71 72 if (ndo->ndo_eflag) 73 ipnet_hdr_print(ndo, p, length); 74 75 length -= sizeof(ipnet_hdr_t); 76 caplen -= sizeof(ipnet_hdr_t); 77 hdr = (const ipnet_hdr_t *)p; 78 p += sizeof(ipnet_hdr_t); 79 80 switch (GET_U_1(hdr->iph_family)) { 81 82 case IPH_AF_INET: 83 ip_print(ndo, p, length); 84 break; 85 86 case IPH_AF_INET6: 87 ip6_print(ndo, p, length); 88 break; 89 90 default: 91 if (!ndo->ndo_eflag) 92 ipnet_hdr_print(ndo, (const u_char *)hdr, 93 length + sizeof(ipnet_hdr_t)); 94 95 if (!ndo->ndo_suppress_default_print) 96 ND_DEFAULTPRINT(p, caplen); 97 break; 98 } 99 } 100 101 /* 102 * This is the top level routine of the printer. 'p' points 103 * to the ether header of the packet, 'h->ts' is the timestamp, 104 * 'h->len' is the length of the packet off the wire, and 'h->caplen' 105 * is the number of bytes actually captured. 106 */ 107 void 108 ipnet_if_print(netdissect_options *ndo, 109 const struct pcap_pkthdr *h, const u_char *p) 110 { 111 ndo->ndo_protocol = "ipnet"; 112 ipnet_print(ndo, p, h->len, h->caplen); 113 } 114 #endif /* DLT_IPNET */ 115