| JP Abgrall | 53f17a9 | 2014-02-12 14:02:41 -0800 | [diff] [blame] | 1 | #ifdef HAVE_CONFIG_H |
| 2 | #include "config.h" |
| 3 | #endif |
| 4 | |
| 5 | #include <tcpdump-stdinc.h> |
| 6 | |
| 7 | #include <stdio.h> |
| 8 | #include <pcap.h> |
| 9 | |
| 10 | #include "netdissect.h" |
| 11 | #include "interface.h" |
| 12 | #include "addrtoname.h" |
| 13 | #include "ipnet.h" |
| 14 | |
| 15 | #ifdef DLT_IPNET |
| 16 | |
| 17 | static const struct tok ipnet_values[] = { |
| 18 | { IPH_AF_INET, "IPv4" }, |
| 19 | { IPH_AF_INET6, "IPv6" }, |
| 20 | { 0, NULL } |
| 21 | }; |
| 22 | |
| 23 | static inline void |
| 24 | ipnet_hdr_print(struct netdissect_options *ndo, const u_char *bp, u_int length) |
| 25 | { |
| 26 | const ipnet_hdr_t *hdr; |
| 27 | hdr = (const ipnet_hdr_t *)bp; |
| 28 | |
| 29 | ND_PRINT((ndo, "%d > %d", hdr->iph_zsrc, hdr->iph_zdst)); |
| 30 | |
| 31 | if (!ndo->ndo_qflag) { |
| 32 | ND_PRINT((ndo,", family %s (%d)", |
| 33 | tok2str(ipnet_values, "Unknown", |
| 34 | hdr->iph_family), |
| 35 | hdr->iph_family)); |
| 36 | } else { |
| 37 | ND_PRINT((ndo,", %s", |
| 38 | tok2str(ipnet_values, |
| 39 | "Unknown Ethertype (0x%04x)", |
| 40 | hdr->iph_family))); |
| 41 | } |
| 42 | |
| 43 | ND_PRINT((ndo, ", length %u: ", length)); |
| 44 | } |
| 45 | |
| 46 | static void |
| 47 | ipnet_print(struct netdissect_options *ndo, const u_char *p, u_int length, u_int caplen) |
| 48 | { |
| 49 | ipnet_hdr_t *hdr; |
| 50 | |
| 51 | if (caplen < sizeof(ipnet_hdr_t)) { |
| 52 | ND_PRINT((ndo, "[|ipnet]")); |
| 53 | return; |
| 54 | } |
| 55 | |
| 56 | if (ndo->ndo_eflag) |
| 57 | ipnet_hdr_print(ndo, p, length); |
| 58 | |
| 59 | length -= sizeof(ipnet_hdr_t); |
| 60 | caplen -= sizeof(ipnet_hdr_t); |
| 61 | hdr = (ipnet_hdr_t *)p; |
| 62 | p += sizeof(ipnet_hdr_t); |
| 63 | |
| 64 | switch (hdr->iph_family) { |
| 65 | |
| 66 | case IPH_AF_INET: |
| 67 | ip_print(ndo, p, length); |
| 68 | break; |
| 69 | |
| 70 | #ifdef INET6 |
| 71 | case IPH_AF_INET6: |
| 72 | ip6_print(ndo, p, length); |
| 73 | break; |
| 74 | #endif /*INET6*/ |
| 75 | |
| 76 | default: |
| 77 | if (!ndo->ndo_eflag) |
| 78 | ipnet_hdr_print(ndo, (u_char *)hdr, |
| 79 | length + sizeof(ipnet_hdr_t)); |
| 80 | |
| 81 | if (!ndo->ndo_suppress_default_print) |
| 82 | ndo->ndo_default_print(ndo, p, caplen); |
| 83 | break; |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | /* |
| 88 | * This is the top level routine of the printer. 'p' points |
| 89 | * to the ether header of the packet, 'h->ts' is the timestamp, |
| 90 | * 'h->len' is the length of the packet off the wire, and 'h->caplen' |
| 91 | * is the number of bytes actually captured. |
| 92 | */ |
| 93 | u_int |
| 94 | ipnet_if_print(struct netdissect_options *ndo, |
| 95 | const struct pcap_pkthdr *h, const u_char *p) |
| 96 | { |
| 97 | ipnet_print(ndo, p, h->len, h->caplen); |
| 98 | |
| 99 | return (sizeof(ipnet_hdr_t)); |
| 100 | } |
| 101 | |
| 102 | /* |
| 103 | * Local Variables: |
| 104 | * c-style: whitesmith |
| 105 | * c-basic-offset: 8 |
| 106 | * End: |
| 107 | */ |
| 108 | |
| 109 | #endif /* DLT_IPNET */ |