| 1 | /* |
|---|
| 2 | * |
|---|
| 3 | * Copyright (c) 2007-2016 The University of Waikato, Hamilton, New Zealand. |
|---|
| 4 | * All rights reserved. |
|---|
| 5 | * |
|---|
| 6 | * This file is part of libtrace. |
|---|
| 7 | * |
|---|
| 8 | * This code has been developed by the University of Waikato WAND |
|---|
| 9 | * research group. For further information please see http://www.wand.net.nz/ |
|---|
| 10 | * |
|---|
| 11 | * libtrace is free software; you can redistribute it and/or modify |
|---|
| 12 | * it under the terms of the GNU Lesser General Public License as published by |
|---|
| 13 | * the Free Software Foundation; either version 3 of the License, or |
|---|
| 14 | * (at your option) any later version. |
|---|
| 15 | * |
|---|
| 16 | * libtrace is distributed in the hope that it will be useful, |
|---|
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
|---|
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|---|
| 19 | * GNU Lesser General Public License for more details. |
|---|
| 20 | * |
|---|
| 21 | * You should have received a copy of the GNU Lesser General Public License |
|---|
| 22 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
|---|
| 23 | * |
|---|
| 24 | * |
|---|
| 25 | */ |
|---|
| 26 | #include <sys/types.h> |
|---|
| 27 | #include <sys/socket.h> |
|---|
| 28 | #include <netinet/in.h> |
|---|
| 29 | #include <stdio.h> |
|---|
| 30 | #include "libpacketdump.h" |
|---|
| 31 | #ifndef WIN32 |
|---|
| 32 | #include <netinet/in_systm.h> |
|---|
| 33 | #endif |
|---|
| 34 | #include <arpa/inet.h> |
|---|
| 35 | #include <netdb.h> |
|---|
| 36 | |
|---|
| 37 | DLLEXPORT void decode(int link_type UNUSED,const char *packet,unsigned len) |
|---|
| 38 | { |
|---|
| 39 | libtrace_ip_t *ip = (libtrace_ip_t*)packet; |
|---|
| 40 | if (len>=1) { |
|---|
| 41 | printf(" IP: Header Len %i",ip->ip_hl*4); |
|---|
| 42 | printf(" Ver %i",ip->ip_v); |
|---|
| 43 | } |
|---|
| 44 | //DISPLAY(ip_tos," TOS %02x") |
|---|
| 45 | DISPLAY_EXP(ip, ip_tos," DSCP %02x",ip->ip_tos >> 2); |
|---|
| 46 | DISPLAY_EXP(ip, ip_tos," ECN %x",ip->ip_tos & 0x2); |
|---|
| 47 | DISPLAYS(ip, ip_len," Total Length %i"); |
|---|
| 48 | printf("\n IP:"); |
|---|
| 49 | DISPLAYS(ip, ip_id," Id %u"); |
|---|
| 50 | |
|---|
| 51 | if ((unsigned int)len >= ((char *)&ip->ip_ttl - (char *)ip - 2)) { |
|---|
| 52 | printf(" Fragoff %i", ntohs(ip->ip_off) & 0x1FFF); |
|---|
| 53 | if (ntohs(ip->ip_off) & 0x2000) printf(" MORE_FRAG"); |
|---|
| 54 | if (ntohs(ip->ip_off) & 0x4000) printf(" DONT_FRAG"); |
|---|
| 55 | if (ntohs(ip->ip_off) & 0x8000) printf(" RESV_FRAG"); |
|---|
| 56 | } |
|---|
| 57 | //printf("\n IP:"); |
|---|
| 58 | DISPLAY(ip, ip_ttl,"\n IP: TTL %i"); |
|---|
| 59 | if ((unsigned int)len>=((char*)&ip->ip_p-(char*)ip+sizeof(ip->ip_p))) { |
|---|
| 60 | struct protoent *ent=getprotobynumber(ip->ip_p); |
|---|
| 61 | if (ent) { |
|---|
| 62 | printf(" Proto %i (%s)",ip->ip_p,ent->p_name); |
|---|
| 63 | } |
|---|
| 64 | else { |
|---|
| 65 | printf(" Proto %i",ip->ip_p); |
|---|
| 66 | } |
|---|
| 67 | } else { |
|---|
| 68 | printf("\n"); |
|---|
| 69 | return; |
|---|
| 70 | } |
|---|
| 71 | DISPLAYS(ip, ip_sum," Checksum %i\n"); |
|---|
| 72 | DISPLAYIP(ip, ip_src," IP: Source %s "); |
|---|
| 73 | DISPLAYIP(ip, ip_dst,"Destination %s\n"); |
|---|
| 74 | decode_next(packet+ip->ip_hl*4,len-ip->ip_hl*4,"ip",ip->ip_p); |
|---|
| 75 | return; |
|---|
| 76 | } |
|---|
