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index 1ddc7561947fa633e7d273eebd434f8d9a5afed3..f3e5f0d3242414dda9779794df0d442aebdb5a1d 100644 (file)
- /******************************************************************************
-*
+/*****************************************************************************
+*
* Nagios check_icmp plugin
-*
+*
* License: GPL
-* Copyright (c) 2005-2007 nagios-plugins team
-*
+* Copyright (c) 2005-2008 Nagios Plugins Development Team
* Original Author : Andreas Ericsson <ae@op5.se>
-*
+*
* Last Modified: $Date$
-*
+*
* Description:
-*
+*
* This file contains the check_icmp plugin
-*
-* Relevant RFC's: 792 (ICMP), 791 (IP)
-*
-* This program was modeled somewhat after the check_icmp program,
-* which was in turn a hack of fping (www.fping.org) but has been
-* completely rewritten since to generate higher precision rta values,
-* and support several different modes as well as setting ttl to control.
-* redundant routes. The only remainders of fping is currently a few
-* function names.
-*
-* License Information:
-*
-* This program is free software; you can redistribute it and/or modify
+*
+* Relevant RFC's: 792 (ICMP), 791 (IP)
+*
+* This program was modeled somewhat after the check_icmp program,
+* which was in turn a hack of fping (www.fping.org) but has been
+* completely rewritten since to generate higher precision rta values,
+* and support several different modes as well as setting ttl to control.
+* redundant routes. The only remainders of fping is currently a few
+* function names.
+*
+*
+* 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
+* the Free Software Foundation, either version 3 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., 675 Mass Ave, Cambridge, MA 02139, USA.
-*
+* along with this program. If not, see <http://www.gnu.org/licenses/>.
+*
* $Id$
*
*****************************************************************************/
/* char *progname = "check_icmp"; */
char *progname;
const char *revision = "$Revision$";
-const char *copyright = "2005-2007";
+const char *copyright = "2005-2008";
const char *email = "nagiosplug-devel@lists.sourceforge.net";
/** nagios plugins basic includes */
static void set_source_ip(char *);
static int add_target(char *);
static int add_target_ip(char *, struct in_addr *);
-static int handle_random_icmp(struct icmp *, struct sockaddr_in *);
+static int handle_random_icmp(char *, struct sockaddr_in *);
static unsigned short icmp_checksum(unsigned short *, int);
static void finish(int);
static void crash(const char *, ...);
}
-static char *
+static const char *
get_icmp_error_msg(unsigned char icmp_type, unsigned char icmp_code)
{
- char *msg = "unreachable";
+ const char *msg = "unreachable";
if(debug > 1) printf("get_icmp_error_msg(%u, %u)\n", icmp_type, icmp_code);
switch(icmp_type) {
}
static int
-handle_random_icmp(struct icmp *p, struct sockaddr_in *addr)
+handle_random_icmp(char *packet, struct sockaddr_in *addr)
{
- struct icmp sent_icmp;
+ struct icmp p, sent_icmp;
struct rta_host *host = NULL;
- unsigned char *ptr;
- if(p->icmp_type == ICMP_ECHO && p->icmp_id == pid) {
+ memcpy(&p, packet, sizeof(p));
+ if(p.icmp_type == ICMP_ECHO && p.icmp_id == pid) {
/* echo request from us to us (pinging localhost) */
return 0;
}
- ptr = (unsigned char *)p;
- if(debug) printf("handle_random_icmp(%p, %p)\n", (void *)p, (void *)addr);
+ if(debug) printf("handle_random_icmp(%p, %p)\n", (void *)&p, (void *)addr);
/* only handle a few types, since others can't possibly be replies to
* us in a sane network (if it is anyway, it will be counted as lost
* TIMXCEED actually sends a proper icmp response we will have passed
* too many hops to have a hope of reaching it later, in which case it
* indicates overconfidence in the network, poor routing or both. */
- if(p->icmp_type != ICMP_UNREACH && p->icmp_type != ICMP_TIMXCEED &&
- p->icmp_type != ICMP_SOURCEQUENCH && p->icmp_type != ICMP_PARAMPROB)
+ if(p.icmp_type != ICMP_UNREACH && p.icmp_type != ICMP_TIMXCEED &&
+ p.icmp_type != ICMP_SOURCEQUENCH && p.icmp_type != ICMP_PARAMPROB)
{
return 0;
}
/* might be for us. At least it holds the original package (according
* to RFC 792). If it isn't, just ignore it */
- memcpy(&sent_icmp, ptr + 28, sizeof(sent_icmp));
+ memcpy(&sent_icmp, packet + 28, sizeof(sent_icmp));
if(sent_icmp.icmp_type != ICMP_ECHO || sent_icmp.icmp_id != pid ||
sent_icmp.icmp_seq >= targets)
{
host = table[sent_icmp.icmp_seq];
if(debug) {
printf("Received \"%s\" from %s for ICMP ECHO sent to %s.\n",
- get_icmp_error_msg(p->icmp_type, p->icmp_code),
+ get_icmp_error_msg(p.icmp_type, p.icmp_code),
inet_ntoa(addr->sin_addr), host->name);
}
/* source quench means we're sending too fast, so increase the
* interval and mark this packet lost */
- if(p->icmp_type == ICMP_SOURCEQUENCH) {
+ if(p.icmp_type == ICMP_SOURCEQUENCH) {
pkt_interval *= pkt_backoff_factor;
target_interval *= target_backoff_factor;
}
targets_down++;
host->flags |= FLAG_LOST_CAUSE;
}
- host->icmp_type = p->icmp_type;
- host->icmp_code = p->icmp_code;
+ host->icmp_type = p.icmp_type;
+ host->icmp_code = p.icmp_code;
host->error_addr.s_addr = addr->sin_addr.s_addr;
return 0;
setlocale (LC_ALL, "");
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
-
+
/* print a helpful error message if geteuid != 0 */
np_warn_if_not_root();
packets = 5;
}
+ /* Parse extra opts if any */
+ argv=np_extra_opts(&argc, argv, progname);
+
/* parse the arguments */
for(i = 1; i < argc; i++) {
while((arg = getopt(argc, argv, "vhVw:c:n:p:t:H:s:i:b:I:l:m:")) != EOF) {
table[t]->name);
continue;
}
-
+
/* we're still in the game, so send next packet */
(void)send_icmp_ping(icmp_sock, table[t]);
result = wait_for_reply(icmp_sock, target_interval);
memcpy(&icp, buf + hlen, sizeof(icp));
if(icp.icmp_id != pid) {
- handle_random_icmp(&icp, &resp_addr);
+ handle_random_icmp(buf + hlen, &resp_addr);
continue;
}
if(icp.icmp_type != ICMP_ECHOREPLY || icp.icmp_seq >= targets) {
if(debug > 2) printf("not a proper ICMP_ECHOREPLY\n");
- handle_random_icmp(&icp, &resp_addr);
+ handle_random_icmp(buf + hlen, &resp_addr);
continue;
}
unsigned char pl;
double rta;
struct rta_host *host;
- char *status_string[] =
+ const char *status_string[] =
{"OK", "WARNING", "CRITICAL", "UNKNOWN", "DEPENDENT"};
int hosts_ok = 0;
int hosts_warn = 0;
/* this is silly, but it works */
if(mode == MODE_HOSTCHECK || mode == MODE_ALL) {
- printf("mode: %d\n", mode);
+ if(debug > 2) printf("mode: %d\n", mode);
continue;
}
break;
{
#if defined(SIOCGIFADDR)
struct ifreq ifr;
+ struct sockaddr_in ip;
strncpy(ifr.ifr_name, ifname, sizeof(ifr.ifr_name) - 1);
ifr.ifr_name[sizeof(ifr.ifr_name) - 1] = '\0';
if(ioctl(icmp_sock, SIOCGIFADDR, &ifr) == -1)
crash("Cannot determine IP address of interface %s", ifname);
- return ((struct sockaddr_in *)&ifr.ifr_addr)->sin_addr.s_addr;
+ memcpy(&ip, &ifr.ifr_addr, sizeof(ip));
+ return ip.sin_addr.s_addr;
#else
errno = 0;
crash("Cannot get interface IP address on this platform.");
{
/*print_revision (progname, revision);*/ /* FIXME: Why? */
-
+
printf ("Copyright (c) 2005 Andreas Ericsson <ae@op5.se>\n");
printf (COPYRIGHT, copyright, email);
-
+
printf ("\n\n");
-
+
print_usage ();
-
+
printf (_(UT_HELP_VRSN));
-
+ printf (_(UT_EXTRA_OPTS));
+
printf (" %s\n", "-H");
printf (" %s\n", _("specify a target"));
printf (" %s\n", "-w");
printf (" %s\n", _("verbose"));
printf ("\n");
- printf ("%s\n\n", _("The -H switch is optional. Naming a host (or several) to check is not."));
- printf ("%s\n", _("Threshold format for -w and -c is 200.25,60% for 200.25 msec RTA and 60%"));
- printf ("%s\n", _("packet loss. The default values should work well for most users."));
- printf ("%s\n", _("You can specify different RTA factors using the standardized abbreviations"));
- printf ("%s\n\n", _("us (microseconds), ms (milliseconds, default) or just plain s for seconds."));
+ printf ("%s\n", _("Notes:"));
+ printf (" %s\n", _("The -H switch is optional. Naming a host (or several) to check is not."));
+ printf ("\n");
+ printf (" %s\n", _("Threshold format for -w and -c is 200.25,60% for 200.25 msec RTA and 60%"));
+ printf (" %s\n", _("packet loss. The default values should work well for most users."));
+ printf (" %s\n", _("You can specify different RTA factors using the standardized abbreviations"));
+ printf (" %s\n", _("us (microseconds), ms (milliseconds, default) or just plain s for seconds."));
/* -d not yet implemented */
/* printf ("%s\n", _("Threshold format for -d is warn,crit. 12,14 means WARNING if >= 12 hops"));
printf ("%s\n", _("are spent and CRITICAL if >= 14 hops are spent."));
printf ("%s\n\n", _("NOTE: Some systems decrease TTL when forming ICMP_ECHOREPLY, others do not."));*/
- printf ("%s\n\n", _("The -v switch can be specified several times for increased verbosity."));
-
+ printf ("\n");
+ printf (" %s\n", _("The -v switch can be specified several times for increased verbosity."));
/* printf ("%s\n", _("Long options are currently unsupported."));
printf ("%s\n", _("Options marked with * require an argument"));
*/
+#ifdef NP_EXTRA_OPTS
+ printf ("\n");
+ printf (_(UT_EXTRA_OPTS_NOTES));
+#endif
+
printf (_(UT_SUPPORT));
-
- printf (_(UT_NOWARRANTY));
}
print_usage (void)
{
printf (_("Usage:"));
- printf(" %s [options] [-H] host1 host2 hostn\n", progname);
+ printf(" %s [options] [-H] host1 host2 hostN\n", progname);
}