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Copy pathlog.c
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351 lines (290 loc) · 7.56 KB
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/*
* Copyright (c) 2002, 2003, 2004 Niels Provos <provos@citi.umich.edu>
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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
*/
#include <sys/param.h>
#include <sys/types.h>
#include "config.h"
#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#endif
#include <sys/stat.h>
#include <sys/tree.h>
#include <sys/queue.h>
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <dnet.h>
#include <ctype.h>
#include <syslog.h>
#include <netdb.h>
#ifdef HAVE_TIME_H
#include <time.h>
#endif
#undef timeout_pending
#undef timeout_initialized
#include <event.h>
#include "honeyd.h"
#include "osfp.h"
#include "log.h"
static char *
honeyd_logtuple(const struct tuple *hdr)
{
static char buf[128];
char asrc[24], adst[24];
struct addr src, dst;
ushort sport, dport;
addr_pack(&src, ADDR_TYPE_IP, IP_ADDR_BITS, &hdr->ip_src, IP_ADDR_LEN);
addr_pack(&dst, ADDR_TYPE_IP, IP_ADDR_BITS, &hdr->ip_dst, IP_ADDR_LEN);
if (hdr->local) {
struct addr tmp;
tmp = src;
src = dst;
dst = tmp;
sport = hdr->dport;
dport = hdr->sport;
} else {
sport = hdr->sport;
dport = hdr->dport;
}
addr_ntop(&src, asrc, sizeof(asrc));
addr_ntop(&dst, adst, sizeof(adst));
if (hdr->type == SOCK_STREAM || hdr->type == SOCK_DGRAM)
snprintf(buf, sizeof(buf), "%s %d %s %d",
asrc, sport, adst, dport);
else if (hdr->type == SOCK_RAW)
snprintf(buf, sizeof(buf), "%s %s: %d(%d)",
asrc, adst, hdr->sport, hdr->dport);
else
snprintf(buf, sizeof(buf), "%s %s", asrc, adst);
return (buf);
}
static char *
honeyd_logtime(void)
{
static char logtime[32];
struct timeval tv;
struct tm *tm;
time_t seconds;
if (gettimeofday(&tv, NULL) == -1)
{
syslog(LOG_ERR, "%s: gettimeofday", __func__);
exit(EXIT_FAILURE);
}
seconds = tv.tv_sec;
/* ctime returns 26-character string */
tm = localtime(&seconds);
snprintf(logtime, sizeof(logtime),
"%04d-%02d-%02d-%02d:%02d:%02d.%04d",
tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday,
tm->tm_hour, tm->tm_min, tm->tm_sec,
(int)(tv.tv_usec / 100));
return (logtime);
}
char *
honeyd_logdate(void)
{
static char logtime[32];
struct timeval tv;
struct tm *tm;
time_t seconds;
if (gettimeofday(&tv, NULL) == -1)
{
syslog(LOG_ERR, "%s: gettimeofday, failed to get time of day", __func__);
exit(EXIT_FAILURE);
}
seconds = tv.tv_sec;
/* ctime returns 26-character string */
tm = localtime(&seconds);
snprintf(logtime, sizeof(logtime),
"%04d-%02d-%02d",
tm->tm_year + 1900, tm->tm_mon + 1, tm->tm_mday);
return (logtime);
}
static char *
honeyd_logproto(int proto)
{
static char protoname[32];
struct protoent *pe;
struct protoent tcp = { "tcp", NULL, IP_PROTO_TCP };
struct protoent udp = { "udp", NULL, IP_PROTO_UDP };
struct protoent icmp = { "icmp", NULL, IP_PROTO_ICMP };
switch(proto) {
case IP_PROTO_TCP:
pe = &tcp;
break;
case IP_PROTO_UDP:
pe = &udp;
break;
case IP_PROTO_ICMP:
pe = &icmp;
break;
default:
/* Reads a file and is very slow */
pe = getprotobynumber(proto);
break;
}
if (pe == NULL)
snprintf(protoname, sizeof(protoname), "unkn(%d)", proto);
else
snprintf(protoname, sizeof(protoname), "%s(%d)",
pe->p_name, proto);
return (protoname);
}
#define TESTFLAG(x,y) do { \
if (flags & (x)) \
tcpflags[i++] = (y); \
} while (0)
static char *
honeyd_logtcpflags(int flags)
{
static char tcpflags[11];
int i = 1;
tcpflags[0] = ' ';
TESTFLAG(TH_FIN, 'F');
TESTFLAG(TH_SYN, 'S');
TESTFLAG(TH_RST, 'R');
TESTFLAG(TH_PUSH, 'P');
TESTFLAG(TH_ACK, 'A');
TESTFLAG(TH_URG, 'U');
TESTFLAG(TH_ECE, 'E');
TESTFLAG(TH_CWR, 'C');
tcpflags[i] = '\0';
return (tcpflags);
}
FILE *
honeyd_logstart(const char *filename)
{
FILE *logfp;
char *logtime;
logfp = fopen(filename, "a");
if (logfp == NULL) {
syslog(LOG_WARNING, "%s: fopen(\"%s\"): %m", __func__, filename);
return (NULL);
}
/* Line buffered I/O */
setvbuf(logfp, NULL, _IOLBF, 0);
logtime = honeyd_logtime();
fprintf(logfp, "%s honeyd log started ------\n", logtime);
return (logfp);
}
static char *
honeyd_log_comment(int proto, const struct tuple *hdr, const char *remark)
{
static char comment[256];
struct ip_hdr ip;
char *name;
comment[0] = '\0';
ip.ip_src = hdr->ip_src;
name = honeyd_osfp_name(&ip);
if (name != NULL)
snprintf(comment, sizeof(comment), " [%s]", name);
if (remark != NULL)
strlcat(comment, remark, sizeof(comment));
return (comment);
}
void
honeyd_logend(FILE *logfp)
{
char *logtime;
if (logfp == NULL)
return;
logtime = honeyd_logtime();
fprintf(logfp, "%s honeyd log stopped ------\n", logtime);
fclose(logfp);
}
void
honeyd_log_service(FILE *fp, int proto, const struct tuple *hdr,
const char *line)
{
static char myline[1024];
char *p;
int len;
syslog(LOG_NOTICE, "E%s: %s", honeyd_contoa(hdr), line);
if (fp == NULL)
return;
do {
len = sizeof(myline);
p = strchr(line, '\n');
if (p != NULL) {
if ((int)(p - line) < sizeof(myline))
len = (int)(p - line) + 1;
}
strlcpy(myline, line, len);
if (p != NULL)
line = ++p;
fprintf(fp, "%s %s %s: |%s|\n",
honeyd_logtime(),
honeyd_logproto(proto),
honeyd_logtuple(hdr),
myline);
} while (p != NULL && *p);
}
void
honeyd_log_probe(FILE *fp, int proto, const struct tuple *hdr,
int size, int flags, const char *comment)
{
if (fp == NULL)
return;
fprintf(fp, "%s %s - %s: %d%s%s\n",
honeyd_logtime(),
honeyd_logproto(proto),
honeyd_logtuple(hdr),
size,
proto == IP_PROTO_TCP ? honeyd_logtcpflags(flags) : "",
honeyd_log_comment(proto, hdr, comment));
}
void
honeyd_log_flownew(FILE *fp, int proto, const struct tuple *hdr)
{
char *tuple, *logtime, *protoname;
if (fp == NULL)
return;
logtime = honeyd_logtime();
tuple = honeyd_logtuple(hdr);
protoname = honeyd_logproto(proto);
fprintf(fp, "%s %s S %s%s\n",
logtime, protoname, tuple,
honeyd_log_comment(proto, hdr, NULL));
}
void
honeyd_log_flowend(FILE *fp, int proto, const struct tuple *hdr)
{
char *tuple, *logtime, *protoname;
if (fp == NULL)
return;
logtime = honeyd_logtime();
tuple = honeyd_logtuple(hdr);
protoname = honeyd_logproto(proto);
fprintf(fp, "%s %s E %s: %d %d\n", logtime, protoname, tuple,
hdr->received, hdr->sent);
}