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/* printpkt.c
*
* build something looking like a iptables LOG message
*
* (C) 2000-2003 by Harald Welte <laforge@gnumonks.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* $Id$
*
*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <netinet/ip.h>
#include <netinet/ip_icmp.h>
#include <ulogd/ulogd.h>
#include <ulogd/conffile.h>
#include <ulogd/printpkt.h>
#define NIPQUAD(addr) \
((unsigned char *)&addr)[0], \
((unsigned char *)&addr)[1], \
((unsigned char *)&addr)[2], \
((unsigned char *)&addr)[3]
struct ulogd_key printpkt_keys[INTR_IDS] = {
{ .name = "oob.time.sec", },
{ .name = "oob.prefix", },
{ .name = "oob.in", },
{ .name = "oob.out", },
{ .name = "raw.mac", },
{ .name = "ip.saddr", },
{ .name = "ip.daddr", },
{ .name = "ip.totlen", },
{ .name = "ip.tos", },
{ .name = "ip.ttl", },
{ .name = "ip.id", },
{ .name = "ip.fragoff", },
{ .name = "ip.protocol", },
{ .name = "tcp.sport", },
{ .name = "tcp.dport", },
{ .name = "tcp.seq", },
{ .name = "tcp.ackseq", },
{ .name = "tcp.window", },
{ .name = "tcp.urg", },
{ .name = "tcp.ack", },
{ .name = "tcp.psh", },
{ .name = "tcp.rst", },
{ .name = "tcp.syn", },
{ .name = "tcp.fin", },
{ .name = "tcp.urgp", },
{ .name = "udp.sport", },
{ .name = "udp.dport", },
{ .name = "udp.len", },
{ .name = "icmp.type", },
{ .name = "icmp.code", },
{ .name = "icmp.echoid", },
{ .name = "icmp.echoseq", },
{ .name = "icmp.gateway", },
{ .name = "icmp.fragmtu", },
{ .name = "ahesp.spi", },
};
#define GET_VALUE(res, x) (res[x].u.source->u.value)
#define GET_FLAGS(res, x) (res[x].u.source->flags)
#define pp_is_valid(res, x) (GET_FLAGS(res, x) & ULOGD_RETF_VALID)
int printpkt_print(struct ulogd_key *res, char *buf)
{
char *buf_cur = buf;
if (pp_is_valid(res, 1))
buf_cur += sprintf(buf_cur, "%s ", (char *) GET_VALUE(res, 1).ptr);
if (pp_is_valid(res, 2) && pp_is_valid(res, 3)) {
buf_cur += sprintf(buf_cur, "IN=%s OUT=%s ",
(char *) GET_VALUE(res, 2).ptr,
(char *) GET_VALUE(res, 3).ptr);
}
/* FIXME: configurable */
if (pp_is_valid(res, 4))
buf_cur += sprintf(buf_cur, "MAC=%s ",
(char *) GET_VALUE(res, 4).ptr);
else
buf_cur += sprintf(buf_cur, "MAC= ");
if (pp_is_valid(res, 5))
buf_cur += sprintf(buf_cur, "SRC=%s ", inet_ntoa(
(struct in_addr) {htonl(GET_VALUE(res, 5).ui32)}));
if (pp_is_valid(res, 6))
buf_cur += sprintf(buf_cur, "DST=%s ", inet_ntoa(
(struct in_addr) {htonl(GET_VALUE(res, 6).ui32)}));
/* FIXME: add pp_is_valid calls to remainder of file */
buf_cur += sprintf(buf_cur,"LEN=%u TOS=%02X PREC=0x%02X TTL=%u ID=%u ",
GET_VALUE(res, 7).ui16, GET_VALUE(res, 8).ui8 & IPTOS_TOS_MASK,
GET_VALUE(res, 8).ui8 & IPTOS_PREC_MASK, GET_VALUE(res, 9).ui8,
GET_VALUE(res, 10).ui16);
if (GET_VALUE(res, 10).ui16 & IP_RF)
buf_cur += sprintf(buf_cur, "CE ");
if (GET_VALUE(res, 11).ui16 & IP_DF)
buf_cur += sprintf(buf_cur, "DF ");
if (GET_VALUE(res, 11).ui16 & IP_MF)
buf_cur += sprintf(buf_cur, "MF ");
if (GET_VALUE(res, 11).ui16 & IP_OFFMASK)
buf_cur += sprintf(buf_cur, "FRAG:%u ",
GET_VALUE(res, 11).ui16 & IP_OFFMASK);
switch (GET_VALUE(res, 12).ui8) {
case IPPROTO_TCP:
buf_cur += sprintf(buf_cur, "PROTO=TCP ");
buf_cur += sprintf(buf_cur, "SPT=%u DPT=%u ",
GET_VALUE(res, 13).ui16, GET_VALUE(res, 14).ui16);
/* FIXME: config */
buf_cur += sprintf(buf_cur, "SEQ=%u ACK=%u ",
GET_VALUE(res, 15).ui32, GET_VALUE(res, 16).ui32);
buf_cur += sprintf(buf_cur, "WINDOW=%u ", GET_VALUE(res, 17).ui16);
// buf_cur += sprintf(buf_cur, "RES=0x%02x ",
if (GET_VALUE(res, 18).b)
buf_cur += sprintf(buf_cur, "URG ");
if (GET_VALUE(res, 19).b)
buf_cur += sprintf(buf_cur, "ACK ");
if (GET_VALUE(res, 20).b)
buf_cur += sprintf(buf_cur, "PSH ");
if (GET_VALUE(res, 21).b)
buf_cur += sprintf(buf_cur, "RST ");
if (GET_VALUE(res, 22).b)
buf_cur += sprintf(buf_cur, "SYN ");
if (GET_VALUE(res, 23).b)
buf_cur += sprintf(buf_cur, "FIN ");
buf_cur += sprintf(buf_cur, "URGP=%u ", GET_VALUE(res, 24).ui16);
break;
case IPPROTO_UDP:
buf_cur += sprintf(buf_cur, "PROTO=UDP ");
buf_cur += sprintf(buf_cur, "SPT=%u DPT=%u LEN=%u ",
GET_VALUE(res, 25).ui16, GET_VALUE(res, 26).ui16,
GET_VALUE(res, 27).ui16);
break;
case IPPROTO_ICMP:
buf_cur += sprintf(buf_cur, "PROTO=ICMP ");
buf_cur += sprintf(buf_cur, "TYPE=%u CODE=%u ",
GET_VALUE(res, 28).ui8, GET_VALUE(res, 29).ui8);
switch (GET_VALUE(res, 28).ui8) {
case ICMP_ECHO:
case ICMP_ECHOREPLY:
buf_cur += sprintf(buf_cur, "ID=%u SEQ=%u ",
GET_VALUE(res, 30).ui16,
GET_VALUE(res, 31).ui16);
break;
case ICMP_PARAMETERPROB:
buf_cur += sprintf(buf_cur, "PARAMETER=%u ",
GET_VALUE(res, 32).ui32 >> 24);
break;
case ICMP_REDIRECT:
buf_cur += sprintf(buf_cur, "GATEWAY=%s ", inet_ntoa((struct in_addr) {htonl(GET_VALUE(res, 32).ui32)}));
break;
case ICMP_DEST_UNREACH:
if (GET_VALUE(res, 29).ui8 == ICMP_FRAG_NEEDED)
buf_cur += sprintf(buf_cur, "MTU=%u ",
GET_VALUE(res, 33).ui16);
break;
}
break;
case IPPROTO_ESP:
case IPPROTO_AH:
buf_cur += sprintf(buf_cur, "PROTO=%s ", GET_VALUE(res, 12).ui8 == IPPROTO_ESP ? "ESP" : "AH");
/* FIXME: "INCOMPLETE [%u bytes]" in case of short pkt */
if (pp_is_valid(res, 34)) {
buf_cur += sprintf(buf_cur, "SPI=0x%x ", GET_VALUE(res, 34).ui32);
}
break;
default:
buf_cur += sprintf(buf_cur, "PROTO=%u ", GET_VALUE(res, 12).ui8);
}
strcat(buf_cur, "\n");
return 0;
}
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