838 lines
18 KiB
C
838 lines
18 KiB
C
/*
|
|
* Copyright (C) 1993-1997 by Darren Reed.
|
|
*
|
|
* Redistribution and use in source and binary forms are permitted
|
|
* provided that this notice is preserved and due credit is given
|
|
* to the original author and the contributors.
|
|
*/
|
|
#if !defined(lint)
|
|
static const char sccsid[] = "@(#)ipmon.c 1.21 6/5/96 (C)1993-1997 Darren Reed";
|
|
static const char rcsid[] = "@(#)$Id: ipmon.c,v 2.0.2.29.2.4 1997/11/28 06:14:46 darrenr Exp $";
|
|
#endif
|
|
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#include <fcntl.h>
|
|
#include <errno.h>
|
|
#include <sys/types.h>
|
|
#ifndef __FreeBSD__
|
|
#if !defined(__SVR4) && !defined(__svr4__)
|
|
#include <strings.h>
|
|
#include <sys/dir.h>
|
|
#else
|
|
#include <sys/filio.h>
|
|
#include <sys/byteorder.h>
|
|
#endif
|
|
#endif
|
|
#include <sys/stat.h>
|
|
#include <sys/param.h>
|
|
#include <sys/file.h>
|
|
#include <sys/time.h>
|
|
#include <stdlib.h>
|
|
#include <stddef.h>
|
|
#include <sys/socket.h>
|
|
#include <sys/ioctl.h>
|
|
#include <netinet/in.h>
|
|
#include <netinet/in_systm.h>
|
|
#include <net/if.h>
|
|
#include <netinet/ip.h>
|
|
#include <netdb.h>
|
|
#include <arpa/inet.h>
|
|
#include <arpa/nameser.h>
|
|
#include <resolv.h>
|
|
|
|
#include <sys/uio.h>
|
|
#ifndef linux
|
|
# include <sys/protosw.h>
|
|
# include <sys/user.h>
|
|
# include <netinet/ip_var.h>
|
|
#endif
|
|
|
|
#include <netinet/tcp.h>
|
|
#include <netinet/ip_icmp.h>
|
|
|
|
#include <ctype.h>
|
|
#include <syslog.h>
|
|
|
|
#include "netinet/ip_compat.h"
|
|
#include <netinet/tcpip.h>
|
|
#include "netinet/ip_fil.h"
|
|
#include "netinet/ip_proxy.h"
|
|
#include "netinet/ip_nat.h"
|
|
#include "netinet/ip_state.h"
|
|
|
|
|
|
#if defined(sun) && !defined(SOLARIS2)
|
|
#define STRERROR(x) sys_errlist[x]
|
|
extern char *sys_errlist[];
|
|
#else
|
|
#define STRERROR(x) strerror(x)
|
|
#endif
|
|
|
|
|
|
struct flags {
|
|
int value;
|
|
char flag;
|
|
};
|
|
|
|
struct flags tcpfl[] = {
|
|
{ TH_ACK, 'A' },
|
|
{ TH_RST, 'R' },
|
|
{ TH_SYN, 'S' },
|
|
{ TH_FIN, 'F' },
|
|
{ TH_URG, 'U' },
|
|
{ TH_PUSH,'P' },
|
|
{ 0, '\0' }
|
|
};
|
|
|
|
|
|
static char line[2048];
|
|
static int opts = 0;
|
|
static void usage __P((char *));
|
|
static void flushlogs __P((char *, FILE *));
|
|
static void print_log __P((int, FILE *, char *, int));
|
|
static void print_ipflog __P((FILE *, char *, int));
|
|
static void print_natlog __P((FILE *, char *, int));
|
|
static void print_statelog __P((FILE *, char *, int));
|
|
static void dumphex __P((FILE *, u_char *, int));
|
|
static int read_log __P((int, int *, char *, int, FILE *));
|
|
char *hostname __P((int, struct in_addr));
|
|
char *portname __P((int, char *, u_short));
|
|
int main __P((int, char *[]));
|
|
|
|
|
|
#define OPT_SYSLOG 0x001
|
|
#define OPT_RESOLVE 0x002
|
|
#define OPT_HEXBODY 0x004
|
|
#define OPT_VERBOSE 0x008
|
|
#define OPT_HEXHDR 0x010
|
|
#define OPT_TAIL 0x020
|
|
#define OPT_NAT 0x080
|
|
#define OPT_STATE 0x100
|
|
#define OPT_FILTER 0x200
|
|
#define OPT_PORTNUM 0x400
|
|
#define OPT_ALL (OPT_NAT|OPT_STATE|OPT_FILTER)
|
|
|
|
#ifndef LOGFAC
|
|
#define LOGFAC LOG_LOCAL0
|
|
#endif
|
|
|
|
|
|
static int read_log(fd, lenp, buf, bufsize, log)
|
|
int fd, bufsize, *lenp;
|
|
char *buf;
|
|
FILE *log;
|
|
{
|
|
int nr;
|
|
|
|
nr = read(fd, buf, bufsize);
|
|
if (!nr)
|
|
return 2;
|
|
if ((nr < 0) && (errno != EINTR))
|
|
return -1;
|
|
*lenp = nr;
|
|
return 0;
|
|
}
|
|
|
|
|
|
char *hostname(res, ip)
|
|
int res;
|
|
struct in_addr ip;
|
|
{
|
|
struct hostent *hp;
|
|
|
|
if (!res)
|
|
return inet_ntoa(ip);
|
|
hp = gethostbyaddr((char *)&ip, sizeof(ip), AF_INET);
|
|
if (!hp)
|
|
return inet_ntoa(ip);
|
|
return hp->h_name;
|
|
}
|
|
|
|
|
|
char *portname(res, proto, port)
|
|
int res;
|
|
char *proto;
|
|
u_short port;
|
|
{
|
|
static char pname[8];
|
|
struct servent *serv;
|
|
|
|
(void) sprintf(pname, "%hu", htons(port));
|
|
if (!res || (opts & OPT_PORTNUM))
|
|
return pname;
|
|
serv = getservbyport((int)port, proto);
|
|
if (!serv)
|
|
return pname;
|
|
return serv->s_name;
|
|
}
|
|
|
|
|
|
static void dumphex(log, buf, len)
|
|
FILE *log;
|
|
u_char *buf;
|
|
int len;
|
|
{
|
|
char line[80];
|
|
int i, j, k;
|
|
u_char *s = buf, *t = (u_char *)line;
|
|
|
|
for (i = len, j = 0; i; i--, j++, s++) {
|
|
if (j && !(j & 0xf)) {
|
|
*t++ = '\n';
|
|
*t = '\0';
|
|
if (!(opts & OPT_SYSLOG))
|
|
fputs(line, stdout);
|
|
else
|
|
syslog(LOG_INFO, "%s", line);
|
|
t = (u_char *)line;
|
|
*t = '\0';
|
|
}
|
|
sprintf((char *)t, "%02x", *s & 0xff);
|
|
t += 2;
|
|
if (!((j + 1) & 0xf)) {
|
|
s -= 15;
|
|
sprintf((char *)t, " ");
|
|
t += 8;
|
|
for (k = 16; k; k--, s++)
|
|
*t++ = (isprint(*s) ? *s : '.');
|
|
s--;
|
|
}
|
|
|
|
if ((j + 1) & 0xf)
|
|
*t++ = ' ';;
|
|
}
|
|
|
|
if (j & 0xf) {
|
|
for (k = 16 - (j & 0xf); k; k--) {
|
|
*t++ = ' ';
|
|
*t++ = ' ';
|
|
*t++ = ' ';
|
|
}
|
|
sprintf((char *)t, " ");
|
|
t += 7;
|
|
s -= j & 0xf;
|
|
for (k = j & 0xf; k; k--, s++)
|
|
*t++ = (isprint(*s) ? *s : '.');
|
|
*t++ = '\n';
|
|
*t = '\0';
|
|
}
|
|
if (!(opts & OPT_SYSLOG)) {
|
|
fputs(line, stdout);
|
|
fflush(stdout);
|
|
} else
|
|
syslog(LOG_INFO, "%s", line);
|
|
}
|
|
|
|
static void print_natlog(log, buf, blen)
|
|
FILE *log;
|
|
char *buf;
|
|
int blen;
|
|
{
|
|
struct natlog *nl;
|
|
iplog_t *ipl = (iplog_t *)buf;
|
|
char *t = line;
|
|
struct tm *tm;
|
|
int res;
|
|
|
|
nl = (struct natlog *)((char *)ipl + sizeof(*ipl));
|
|
res = (opts & OPT_RESOLVE) ? 1 : 0;
|
|
tm = localtime((time_t *)&ipl->ipl_sec);
|
|
if (!(opts & OPT_SYSLOG)) {
|
|
(void) sprintf(t, "%2d/%02d/%4d ",
|
|
tm->tm_mday, tm->tm_mon + 1, tm->tm_year + 1900);
|
|
t += strlen(t);
|
|
}
|
|
(void) sprintf(t, "%02d:%02d:%02d.%-.6ld @%hd ",
|
|
tm->tm_hour, tm->tm_min, tm->tm_sec, ipl->ipl_usec,
|
|
nl->nl_rule+1);
|
|
t += strlen(t);
|
|
|
|
if (nl->nl_type == NL_NEWMAP)
|
|
strcpy(t, "NAT:MAP ");
|
|
else if (nl->nl_type == NL_NEWRDR)
|
|
strcpy(t, "NAT:RDR ");
|
|
else if (nl->nl_type == ISL_EXPIRE)
|
|
strcpy(t, "NAT:EXPIRE ");
|
|
else
|
|
sprintf(t, "Type: %d ", nl->nl_type);
|
|
t += strlen(t);
|
|
|
|
(void) sprintf(t, "%s,%s <- -> ", hostname(res, nl->nl_inip),
|
|
portname(res, NULL, nl->nl_inport));
|
|
t += strlen(t);
|
|
(void) sprintf(t, "%s,%s ", hostname(res, nl->nl_outip),
|
|
portname(res, NULL, nl->nl_outport));
|
|
t += strlen(t);
|
|
(void) sprintf(t, "[%s,%s]", hostname(res, nl->nl_origip),
|
|
portname(res, NULL, nl->nl_origport));
|
|
t += strlen(t);
|
|
if (nl->nl_type == NL_EXPIRE) {
|
|
#ifdef USE_QUAD_T
|
|
(void) sprintf(t, " Pkts %qd Bytes %qd",
|
|
#else
|
|
(void) sprintf(t, " Pkts %ld Bytes %ld",
|
|
#endif
|
|
nl->nl_pkts, nl->nl_bytes);
|
|
t += strlen(t);
|
|
}
|
|
|
|
*t++ = '\n';
|
|
*t++ = '\0';
|
|
if (opts & OPT_SYSLOG)
|
|
syslog(LOG_INFO, "%s", line);
|
|
else
|
|
(void) fprintf(log, "%s", line);
|
|
}
|
|
|
|
|
|
static void print_statelog(log, buf, blen)
|
|
FILE *log;
|
|
char *buf;
|
|
int blen;
|
|
{
|
|
struct ipslog *sl;
|
|
iplog_t *ipl = (iplog_t *)buf;
|
|
struct protoent *pr;
|
|
char *t = line, *proto, pname[6];
|
|
struct tm *tm;
|
|
int res;
|
|
|
|
sl = (struct ipslog *)((char *)ipl + sizeof(*ipl));
|
|
res = (opts & OPT_RESOLVE) ? 1 : 0;
|
|
tm = localtime((time_t *)&ipl->ipl_sec);
|
|
if (!(opts & OPT_SYSLOG)) {
|
|
(void) sprintf(t, "%2d/%02d/%4d ",
|
|
tm->tm_mday, tm->tm_mon + 1, tm->tm_year + 1900);
|
|
t += strlen(t);
|
|
}
|
|
(void) sprintf(t, "%02d:%02d:%02d.%-.6ld ",
|
|
tm->tm_hour, tm->tm_min, tm->tm_sec, ipl->ipl_usec);
|
|
t += strlen(t);
|
|
|
|
if (sl->isl_type == ISL_NEW)
|
|
strcpy(t, "STATE:NEW ");
|
|
else if (sl->isl_type == ISL_EXPIRE)
|
|
strcpy(t, "STATE:EXPIRE ");
|
|
else
|
|
sprintf(t, "Type: %d ", sl->isl_type);
|
|
t += strlen(t);
|
|
|
|
pr = getprotobynumber((int)sl->isl_p);
|
|
if (!pr) {
|
|
proto = pname;
|
|
sprintf(proto, "%d", (u_int)sl->isl_p);
|
|
} else
|
|
proto = pr->p_name;
|
|
|
|
if (sl->isl_p == IPPROTO_TCP || sl->isl_p == IPPROTO_UDP) {
|
|
(void) sprintf(t, "%s,%s -> ",
|
|
hostname(res, sl->isl_src),
|
|
portname(res, proto, sl->isl_sport));
|
|
t += strlen(t);
|
|
(void) sprintf(t, "%s,%s PR %s",
|
|
hostname(res, sl->isl_dst),
|
|
portname(res, proto, sl->isl_dport), proto);
|
|
} else if (sl->isl_p == IPPROTO_ICMP) {
|
|
(void) sprintf(t, "%s -> ", hostname(res, sl->isl_src));
|
|
t += strlen(t);
|
|
(void) sprintf(t, "%s PR icmp %d",
|
|
hostname(res, sl->isl_dst), sl->isl_itype);
|
|
}
|
|
t += strlen(t);
|
|
if (sl->isl_type != ISL_NEW) {
|
|
#ifdef USE_QUAD_T
|
|
(void) sprintf(t, " Pkts %qd Bytes %qd",
|
|
#else
|
|
(void) sprintf(t, " Pkts %ld Bytes %ld",
|
|
#endif
|
|
sl->isl_pkts, sl->isl_bytes);
|
|
t += strlen(t);
|
|
}
|
|
|
|
*t++ = '\n';
|
|
*t++ = '\0';
|
|
if (opts & OPT_SYSLOG)
|
|
syslog(LOG_INFO, "%s", line);
|
|
else
|
|
(void) fprintf(log, "%s", line);
|
|
}
|
|
|
|
|
|
static void print_log(logtype, log, buf, blen)
|
|
FILE *log;
|
|
char *buf;
|
|
int logtype, blen;
|
|
{
|
|
iplog_t *ipl;
|
|
int psize;
|
|
|
|
while (blen > 0) {
|
|
ipl = (iplog_t *)buf;
|
|
if (ipl->ipl_magic != IPL_MAGIC) {
|
|
/* invalid data or out of sync */
|
|
return;
|
|
}
|
|
psize = ipl->ipl_dsize;
|
|
switch (logtype)
|
|
{
|
|
case IPL_LOGIPF :
|
|
print_ipflog(log, buf, psize);
|
|
break;
|
|
case IPL_LOGNAT :
|
|
print_natlog(log, buf, psize);
|
|
break;
|
|
case IPL_LOGSTATE :
|
|
print_statelog(log, buf, psize);
|
|
break;
|
|
}
|
|
|
|
blen -= psize;
|
|
buf += psize;
|
|
}
|
|
}
|
|
|
|
|
|
static void print_ipflog(log, buf, blen)
|
|
FILE *log;
|
|
char *buf;
|
|
int blen;
|
|
{
|
|
struct protoent *pr;
|
|
struct tcphdr *tp;
|
|
struct icmp *ic;
|
|
struct tm *tm;
|
|
char c[3], pname[8], *t, *proto;
|
|
u_short hl, p;
|
|
int i, lvl, res, len;
|
|
ip_t *ipc, *ip;
|
|
iplog_t *ipl;
|
|
ipflog_t *ipf;
|
|
|
|
ipl = (iplog_t *)buf;
|
|
ipf = (ipflog_t *)((char *)buf + sizeof(*ipl));
|
|
ip = (ip_t *)((char *)ipf + sizeof(*ipf));
|
|
res = (opts & OPT_RESOLVE) ? 1 : 0;
|
|
t = line;
|
|
*t = '\0';
|
|
hl = (ip->ip_hl << 2);
|
|
p = (u_short)ip->ip_p;
|
|
tm = localtime((time_t *)&ipl->ipl_sec);
|
|
#ifdef linux
|
|
ip->ip_len = ntohs(ip->ip_len);
|
|
#endif
|
|
|
|
if (!(opts & OPT_SYSLOG)) {
|
|
(void) sprintf(t, "%2d/%02d/%4d ",
|
|
tm->tm_mday, tm->tm_mon + 1, tm->tm_year + 1900);
|
|
t += strlen(t);
|
|
}
|
|
(void) sprintf(t, "%02d:%02d:%02d.%-.6ld ", tm->tm_hour, tm->tm_min,
|
|
tm->tm_sec, ipl->ipl_usec);
|
|
t += strlen(t);
|
|
if (ipl->ipl_count > 1) {
|
|
(void) sprintf(t, "%dx ", ipl->ipl_count);
|
|
t += strlen(t);
|
|
}
|
|
#if (SOLARIS || \
|
|
(defined(NetBSD) && (NetBSD <= 1991011) && (NetBSD >= 199603)) || \
|
|
(defined(OpenBSD) && (OpenBSD >= 199603))) || defined(linux)
|
|
len = (int)sizeof(ipf->fl_ifname);
|
|
(void) sprintf(t, "%*.*s", len, len, ipf->fl_ifname);
|
|
#else
|
|
for (len = 0; len < 3; len++)
|
|
if (!ipf->fl_ifname[len])
|
|
break;
|
|
if (ipf->fl_ifname[len])
|
|
len++;
|
|
(void) sprintf(t, "%*.*s%u", len, len, ipf->fl_ifname, ipf->fl_unit);
|
|
#endif
|
|
t += strlen(t);
|
|
(void) sprintf(t, " @%hu:%hu ", ipf->fl_group, ipf->fl_rule + 1);
|
|
pr = getprotobynumber((int)p);
|
|
if (!pr) {
|
|
proto = pname;
|
|
sprintf(proto, "%d", (u_int)p);
|
|
} else
|
|
proto = pr->p_name;
|
|
|
|
if (ipf->fl_flags & FF_SHORT) {
|
|
c[0] = 'S';
|
|
lvl = LOG_ERR;
|
|
} else if (ipf->fl_flags & FR_PASS) {
|
|
if (ipf->fl_flags & FR_LOGP)
|
|
c[0] = 'p';
|
|
else
|
|
c[0] = 'P';
|
|
lvl = LOG_NOTICE;
|
|
} else if (ipf->fl_flags & FR_BLOCK) {
|
|
if (ipf->fl_flags & FR_LOGB)
|
|
c[0] = 'b';
|
|
else
|
|
c[0] = 'B';
|
|
lvl = LOG_WARNING;
|
|
} else if (ipf->fl_flags & FF_LOGNOMATCH) {
|
|
c[0] = 'n';
|
|
lvl = LOG_NOTICE;
|
|
} else {
|
|
c[0] = 'L';
|
|
lvl = LOG_INFO;
|
|
}
|
|
c[1] = ' ';
|
|
c[2] = '\0';
|
|
(void) strcat(line, c);
|
|
t = line + strlen(line);
|
|
|
|
if ((p == IPPROTO_TCP || p == IPPROTO_UDP) && !(ip->ip_off & 0x1fff)) {
|
|
tp = (struct tcphdr *)((char *)ip + hl);
|
|
if (!(ipf->fl_flags & (FI_SHORT << 16))) {
|
|
(void) sprintf(t, "%s,%s -> ",
|
|
hostname(res, ip->ip_src),
|
|
portname(res, proto, tp->th_sport));
|
|
t += strlen(t);
|
|
(void) sprintf(t, "%s,%s PR %s len %hu %hu ",
|
|
hostname(res, ip->ip_dst),
|
|
portname(res, proto, tp->th_dport),
|
|
proto, hl, ip->ip_len);
|
|
t += strlen(t);
|
|
|
|
if (p == IPPROTO_TCP) {
|
|
*t++ = '-';
|
|
for (i = 0; tcpfl[i].value; i++)
|
|
if (tp->th_flags & tcpfl[i].value)
|
|
*t++ = tcpfl[i].flag;
|
|
}
|
|
if (opts & OPT_VERBOSE) {
|
|
(void) sprintf(t, " %lu %lu %hu",
|
|
(u_long)tp->th_seq,
|
|
(u_long)tp->th_ack, tp->th_win);
|
|
t += strlen(t);
|
|
}
|
|
*t = '\0';
|
|
} else {
|
|
(void) sprintf(t, "%s -> ", hostname(res, ip->ip_src));
|
|
t += strlen(t);
|
|
(void) sprintf(t, "%s PR %s len %hu %hu",
|
|
hostname(res, ip->ip_dst), proto,
|
|
hl, ip->ip_len);
|
|
}
|
|
} else if (p == IPPROTO_ICMP) {
|
|
ic = (struct icmp *)((char *)ip + hl);
|
|
(void) sprintf(t, "%s -> ", hostname(res, ip->ip_src));
|
|
t += strlen(t);
|
|
(void) sprintf(t, "%s PR icmp len %hu (%hu) icmp %d/%d",
|
|
hostname(res, ip->ip_dst), hl,
|
|
ntohs(ip->ip_len), ic->icmp_type, ic->icmp_code);
|
|
if (ic->icmp_type == ICMP_UNREACH ||
|
|
ic->icmp_type == ICMP_SOURCEQUENCH ||
|
|
ic->icmp_type == ICMP_PARAMPROB ||
|
|
ic->icmp_type == ICMP_REDIRECT ||
|
|
ic->icmp_type == ICMP_TIMXCEED) {
|
|
ipc = &ic->icmp_ip;
|
|
tp = (struct tcphdr *)((char *)ipc + hl);
|
|
|
|
p = (u_short)ipc->ip_p;
|
|
pr = getprotobynumber((int)p);
|
|
if (!pr) {
|
|
proto = pname;
|
|
(void) sprintf(proto, "%d", (int)p);
|
|
} else
|
|
proto = pr->p_name;
|
|
|
|
t += strlen(t);
|
|
(void) sprintf(t, " for %s,%s -",
|
|
hostname(res, ipc->ip_src),
|
|
portname(res, proto, tp->th_sport));
|
|
t += strlen(t);
|
|
(void) sprintf(t, " %s,%s PR %s len %hu %hu",
|
|
hostname(res, ipc->ip_dst),
|
|
portname(res, proto, tp->th_dport),
|
|
proto, ipc->ip_hl << 2, ipc->ip_len);
|
|
}
|
|
} else {
|
|
(void) sprintf(t, "%s -> ", hostname(res, ip->ip_src));
|
|
t += strlen(t);
|
|
(void) sprintf(t, "%s PR %s len %hu (%hu)",
|
|
hostname(res, ip->ip_dst), proto, hl, ip->ip_len);
|
|
t += strlen(t);
|
|
if (ip->ip_off & 0x1fff)
|
|
(void) sprintf(t, " frag %s%s%hu@%hu",
|
|
ip->ip_off & IP_MF ? "+" : "",
|
|
ip->ip_off & IP_DF ? "-" : "",
|
|
ip->ip_len - hl, (ip->ip_off & 0x1fff) << 3);
|
|
}
|
|
t += strlen(t);
|
|
|
|
if (ipf->fl_flags & FR_KEEPSTATE) {
|
|
(void) strcpy(t, " K-S");
|
|
t += strlen(t);
|
|
}
|
|
|
|
if (ipf->fl_flags & FR_KEEPFRAG) {
|
|
(void) strcpy(t, " K-F");
|
|
t += strlen(t);
|
|
}
|
|
|
|
*t++ = '\n';
|
|
*t++ = '\0';
|
|
if (opts & OPT_SYSLOG)
|
|
syslog(lvl, "%s", line);
|
|
else
|
|
(void) fprintf(log, "%s", line);
|
|
if (opts & OPT_HEXHDR)
|
|
dumphex(log, (u_char *)buf, sizeof(iplog_t));
|
|
if (opts & OPT_HEXBODY)
|
|
dumphex(log, (u_char *)ip, ipf->fl_plen + ipf->fl_hlen);
|
|
}
|
|
|
|
|
|
static void usage(prog)
|
|
char *prog;
|
|
{
|
|
fprintf(stderr, "%s: [-NFhstvxX] [-f <logfile>]\n", prog);
|
|
exit(1);
|
|
}
|
|
|
|
|
|
static void flushlogs(file, log)
|
|
char *file;
|
|
FILE *log;
|
|
{
|
|
int fd, flushed = 0;
|
|
|
|
if ((fd = open(file, O_RDWR)) == -1) {
|
|
(void) fprintf(stderr, "%s: open: %s\n", file,STRERROR(errno));
|
|
exit(-1);
|
|
}
|
|
|
|
if (ioctl(fd, SIOCIPFFB, &flushed) == 0) {
|
|
printf("%d bytes flushed from log buffer\n",
|
|
flushed);
|
|
fflush(stdout);
|
|
} else
|
|
perror("SIOCIPFFB");
|
|
(void) close(fd);
|
|
|
|
if (flushed) {
|
|
if (opts & OPT_SYSLOG)
|
|
syslog(LOG_INFO, "%d bytes flushed from log\n",
|
|
flushed);
|
|
else if (log != stdout)
|
|
fprintf(log, "%d bytes flushed from log\n", flushed);
|
|
}
|
|
}
|
|
|
|
|
|
static void logopts(turnon, options)
|
|
int turnon;
|
|
char *options;
|
|
{
|
|
int flags = 0;
|
|
char *s;
|
|
|
|
for (s = options; *s; s++)
|
|
{
|
|
switch (*s)
|
|
{
|
|
case 'N' :
|
|
flags |= OPT_NAT;
|
|
break;
|
|
case 'S' :
|
|
flags |= OPT_STATE;
|
|
break;
|
|
case 'I' :
|
|
flags |= OPT_FILTER;
|
|
break;
|
|
default :
|
|
fprintf(stderr, "Unknown log option %c\n", *s);
|
|
exit(1);
|
|
}
|
|
}
|
|
|
|
if (turnon)
|
|
opts |= flags;
|
|
else
|
|
opts &= ~(flags);
|
|
}
|
|
|
|
|
|
int main(argc, argv)
|
|
int argc;
|
|
char *argv[];
|
|
{
|
|
struct stat sb;
|
|
FILE *log = stdout;
|
|
int fd[3], doread, n, i;
|
|
int tr, nr, regular[3], c;
|
|
int fdt[3], devices = 0;
|
|
char buf[512], *iplfile[3];
|
|
extern int optind;
|
|
extern char *optarg;
|
|
|
|
fd[0] = fd[1] = fd[2] = -1;
|
|
fdt[0] = fdt[1] = fdt[2] = -1;
|
|
iplfile[0] = IPL_NAME;
|
|
iplfile[1] = IPNAT_NAME;
|
|
iplfile[2] = IPSTATE_NAME;
|
|
|
|
while ((c = getopt(argc, argv, "?af:FhI:nN:o:O:sS:tvxX")) != -1)
|
|
switch (c)
|
|
{
|
|
case 'a' :
|
|
opts |= OPT_ALL;
|
|
break;
|
|
case 'f' : case 'I' :
|
|
opts |= OPT_FILTER;
|
|
fdt[0] = IPL_LOGIPF;
|
|
iplfile[0] = optarg;
|
|
break;
|
|
case 'F' :
|
|
flushlogs(iplfile[0], log);
|
|
flushlogs(iplfile[1], log);
|
|
flushlogs(iplfile[2], log);
|
|
break;
|
|
case 'n' :
|
|
opts |= OPT_RESOLVE;
|
|
break;
|
|
case 'N' :
|
|
opts |= OPT_NAT;
|
|
fdt[1] = IPL_LOGNAT;
|
|
iplfile[1] = optarg;
|
|
break;
|
|
case 'o' : case 'O' :
|
|
logopts(c == 'o', optarg);
|
|
fdt[0] = fdt[1] = fdt[2] = -1;
|
|
if (opts & OPT_FILTER)
|
|
fdt[0] = IPL_LOGIPF;
|
|
if (opts & OPT_NAT)
|
|
fdt[1] = IPL_LOGNAT;
|
|
if (opts & OPT_STATE)
|
|
fdt[2] = IPL_LOGSTATE;
|
|
break;
|
|
case 'p' :
|
|
opts |= OPT_PORTNUM;
|
|
break;
|
|
case 's' :
|
|
openlog(argv[0], LOG_NDELAY|LOG_PID, LOGFAC);
|
|
opts |= OPT_SYSLOG;
|
|
break;
|
|
case 'S' :
|
|
opts |= OPT_STATE;
|
|
fdt[2] = IPL_LOGSTATE;
|
|
iplfile[2] = optarg;
|
|
break;
|
|
case 't' :
|
|
opts |= OPT_TAIL;
|
|
break;
|
|
case 'v' :
|
|
opts |= OPT_VERBOSE;
|
|
break;
|
|
case 'x' :
|
|
opts |= OPT_HEXBODY;
|
|
break;
|
|
case 'X' :
|
|
opts |= OPT_HEXHDR;
|
|
break;
|
|
default :
|
|
case 'h' :
|
|
case '?' :
|
|
usage(argv[0]);
|
|
}
|
|
|
|
/*
|
|
* Default action is to only open the filter log file.
|
|
*/
|
|
if ((fdt[0] == -1) && (fdt[1] == -1) && (fdt[2] == -1))
|
|
fdt[0] = IPL_LOGIPF;
|
|
|
|
for (i = 0; i < 3; i++) {
|
|
if (fdt[i] == -1)
|
|
continue;
|
|
if (!strcmp(iplfile[i], "-"))
|
|
fd[i] = 0;
|
|
else {
|
|
if ((fd[i] = open(iplfile[i], O_RDONLY)) == -1) {
|
|
(void) fprintf(stderr,
|
|
"%s: open: %s\n", iplfile[i],
|
|
STRERROR(errno));
|
|
exit(-1);
|
|
}
|
|
|
|
if (fstat(fd[i], &sb) == -1) {
|
|
(void) fprintf(stderr, "%d: fstat: %s\n",fd[i],
|
|
STRERROR(errno));
|
|
exit(-1);
|
|
}
|
|
if (!(regular[i] = !S_ISCHR(sb.st_mode)))
|
|
devices++;
|
|
}
|
|
}
|
|
|
|
if (!(opts & OPT_SYSLOG)) {
|
|
log = argv[optind] ? fopen(argv[optind], "a") : stdout;
|
|
if (log == NULL) {
|
|
|
|
(void) fprintf(stderr, "%s: fopen: %s\n", argv[optind],
|
|
STRERROR(errno));
|
|
exit(-1);
|
|
}
|
|
setvbuf(log, NULL, _IONBF, 0);
|
|
}
|
|
|
|
for (doread = 1; doread; ) {
|
|
nr = 0;
|
|
|
|
for (i = 0; i < 3; i++) {
|
|
tr = 0;
|
|
if (fdt[i] == -1)
|
|
continue;
|
|
if (!regular[i]) {
|
|
if (ioctl(fd[i], FIONREAD, &tr) == -1) {
|
|
perror("ioctl(FIONREAD)");
|
|
exit(-1);
|
|
}
|
|
} else {
|
|
tr = (lseek(fd[i], 0, SEEK_CUR) < sb.st_size);
|
|
if (!tr && !(opts & OPT_TAIL))
|
|
doread = 0;
|
|
}
|
|
if (!tr)
|
|
continue;
|
|
nr += tr;
|
|
|
|
tr = read_log(fd[i], &n, buf, sizeof(buf), log);
|
|
switch (tr)
|
|
{
|
|
case -1 :
|
|
if (opts & OPT_SYSLOG)
|
|
syslog(LOG_ERR, "read: %m\n");
|
|
else
|
|
perror("read");
|
|
doread = 0;
|
|
break;
|
|
case 1 :
|
|
if (opts & OPT_SYSLOG)
|
|
syslog(LOG_ERR, "aborting logging\n");
|
|
else
|
|
fprintf(log, "aborting logging\n");
|
|
doread = 0;
|
|
break;
|
|
case 2 :
|
|
break;
|
|
case 0 :
|
|
if (n > 0) {
|
|
print_log(fdt[i], log, buf, n);
|
|
if (!(opts & OPT_SYSLOG))
|
|
fflush(log);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
if (!nr && ((opts & OPT_TAIL) || devices))
|
|
sleep(1);
|
|
}
|
|
exit(0);
|
|
/* NOTREACHED */
|
|
}
|