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/*
* Copyright (c) 1996, 1997, 1999, 2004
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that: (1) source code distributions
* retain the above copyright notice and this paragraph in its entirety, (2)
* distributions including binary code include the above copyright notice and
* this paragraph in its entirety in the documentation or other materials
* provided with the distribution, and (3) all advertising materials mentioning
* features or use of this software display the following acknowledgement:
* ``This product includes software developed by the University of California,
* Lawrence Berkeley Laboratory and its contributors.'' Neither the name of
* the University nor the names of its contributors may be used to endorse
* or promote products derived from this software without specific prior
* written permission.
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#ifndef lint
static const char copyright[] =
"Copyright (c) 1996, 1997, 1999, 2004\n\
The Regents of the University of California. All rights reserved.\n";
static const char rcsid[] =
"@(#) $Header: /usr/src/local/sbin/arpwatch/RCS/arpsnmp.c,v 1.9 2004/01/22 22:25:11 leres Exp $ (LBL)";
#endif
/*
* arpsnmp - keep track of ethernet/ip address pairings, report changes
*/
#include <sys/param.h>
#include <sys/types.h> /* concession to AIX */
#include <sys/file.h>
#include <ctype.h>
#ifdef HAVE_MEMORY_H
#include <memory.h>
#endif
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <syslog.h>
#include <time.h>
#include <unistd.h>
#include "gnuc.h"
#ifdef HAVE_OS_PROTO_H
#include "os-proto.h"
#endif
#include "arpwatch.h"
#include "db.h"
#include "ec.h"
#include "file.h"
#include "machdep.h"
#include "util.h"
/* Forwards */
int main(int, char **);
int readsnmp(char *);
int snmp_add(u_int32_t, u_char *, time_t, char *, char *);
__dead void usage(void) __attribute__((volatile));
char *prog;
char *path_sendmail = PATH_SENDMAIL;
extern int optind;
extern int opterr;
extern char *optarg;
int
main(int argc, char **argv)
{
register char *cp;
register int op, i;
char errbuf[256];
char options[] =
"d"
"m:"
"f:"
"s:"
;
if ((cp = strrchr(argv[0], '/')) != NULL)
prog = cp + 1;
else
prog = argv[0];
if (abort_on_misalignment(errbuf) < 0) {
(void)fprintf(stderr, "%s: %s\n", prog, errbuf);
exit(1);
}
opterr = 0;
while ((op = getopt(argc, argv, options)) != EOF)
switch (op) {
case 'd':
++debug;
#ifndef DEBUG
(void)fprintf(stderr,
"%s: Warning: Not compiled with -DDEBUG\n", prog);
#endif
break;
case 'm':
mailaddress = optarg;
break;
case 'f':
arpfile = optarg;
break;
case 's':
path_sendmail = optarg;
break;
default:
usage();
}
if (optind == argc)
usage();
openlog(prog, 0, LOG_DAEMON);
/* Read in database */
initializing = 1;
/* XXX todo: file locking */
if (!readdata())
exit(1);
sorteinfo();
#ifdef DEBUG
if (debug > 2) {
debugdump();
exit(0);
}
#endif
initializing = 0;
/* Suck files in then exit */
for (i = optind; i < argc; ++i)
(void)readsnmp(argv[i]);
if (!dump())
exit(1);
exit(0);
}
static time_t now;
int
snmp_add(register u_int32_t a, register u_char *e, time_t t, register char *h,
char *interface)
{
/* Watch for ethernet broadcast */
if (MEMCMP(e, zero, 6) == 0 || MEMCMP(e, allones, 6) == 0) {
dosyslog(LOG_INFO, "ethernet broadcast", a, e, NULL,
interface);
return (1);
}
/* Watch for some ip broadcast addresses */
if (a == 0 || a == 1) {
dosyslog(LOG_INFO, "ip broadcast", a, e, NULL, interface);
return (1);
}
/* Use current time (although it would be nice to subtract idle time) */
return (ent_add(a, e, now, h, interface));
}
/* Process an snmp file */
int
readsnmp(register char *file)
{
register FILE *f;
if (debug > 2)
(void)fprintf(stderr, "%s: reading %s\n", prog, file);
if ((f = fopen(file, "r")) == NULL) {
syslog(LOG_ERR, "fopen(%s): %m", file);
return(0);
}
now = time(NULL);
if (!file_loop(f, snmp_add, file)) {
(void)fclose(f);
return(0);
}
(void)fclose(f);
return(1);
}
__dead void
usage(void)
{
extern char version[];
char usage[] =
"[-d] "
"[-m addr ] "
"[-f datafile] "
"[-s sendmail_path] "
"file [...]\n"
;
(void)fprintf(stderr, "Version %s\n", version);
(void)fprintf(stderr,
"usage: %s %s", prog, usage);
exit(1);
}
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