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-rw-r--r--plugins/check_ping.c620
1 files changed, 620 insertions, 0 deletions
diff --git a/plugins/check_ping.c b/plugins/check_ping.c
new file mode 100644
index 0000000..741f732
--- /dev/null
+++ b/plugins/check_ping.c
@@ -0,0 +1,620 @@
+/*****************************************************************************
+*
+* Monitoring check_ping plugin
+*
+* License: GPL
+* Copyright (c) 2000-2007 Monitoring Plugins Development Team
+*
+* Description:
+*
+* This file contains the check_ping plugin
+*
+* Use the ping program to check connection statistics for a remote host.
+*
+*
+* 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 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, see <http://www.gnu.org/licenses/>.
+*
+*
+*****************************************************************************/
+
+const char *progname = "check_ping";
+const char *copyright = "2000-2007";
+const char *email = "devel@monitoring-plugins.org";
+
+#include "common.h"
+#include "netutils.h"
+#include "popen.h"
+#include "utils.h"
+
+#include <signal.h>
+
+#define WARN_DUPLICATES "DUPLICATES FOUND! "
+#define UNKNOWN_TRIP_TIME -1.0 /* -1 seconds */
+
+enum {
+ UNKNOWN_PACKET_LOSS = 200, /* 200% */
+ DEFAULT_MAX_PACKETS = 5 /* default no. of ICMP ECHO packets */
+};
+
+int process_arguments (int, char **);
+int get_threshold (char *, float *, int *);
+int validate_arguments (void);
+int run_ping (const char *cmd, const char *addr);
+int error_scan (char buf[MAX_INPUT_BUFFER], const char *addr);
+void print_usage (void);
+void print_help (void);
+
+int display_html = FALSE;
+int wpl = UNKNOWN_PACKET_LOSS;
+int cpl = UNKNOWN_PACKET_LOSS;
+float wrta = UNKNOWN_TRIP_TIME;
+float crta = UNKNOWN_TRIP_TIME;
+char **addresses = NULL;
+int n_addresses = 0;
+int max_addr = 1;
+int max_packets = -1;
+int verbose = 0;
+
+float rta = UNKNOWN_TRIP_TIME;
+int pl = UNKNOWN_PACKET_LOSS;
+
+char *warn_text;
+
+
+
+int
+main (int argc, char **argv)
+{
+ char *cmd = NULL;
+ char *rawcmd = NULL;
+ int result = STATE_UNKNOWN;
+ int this_result = STATE_UNKNOWN;
+ int i;
+
+ setlocale (LC_ALL, "");
+ setlocale (LC_NUMERIC, "C");
+ bindtextdomain (PACKAGE, LOCALEDIR);
+ textdomain (PACKAGE);
+
+ addresses = malloc (sizeof(char*) * max_addr);
+ addresses[0] = NULL;
+
+ /* Parse extra opts if any */
+ argv=np_extra_opts (&argc, argv, progname);
+
+ if (process_arguments (argc, argv) == ERROR)
+ usage4 (_("Could not parse arguments"));
+
+ /* Set signal handling and alarm */
+ if (signal (SIGALRM, popen_timeout_alarm_handler) == SIG_ERR) {
+ usage4 (_("Cannot catch SIGALRM"));
+ }
+
+ /* If ./configure finds ping has timeout values, set plugin alarm slightly
+ * higher so that we can use response from command line ping */
+#if defined(PING_PACKETS_FIRST) && defined(PING_HAS_TIMEOUT)
+ alarm (timeout_interval + 1);
+#else
+ alarm (timeout_interval);
+#endif
+
+ for (i = 0 ; i < n_addresses ; i++) {
+
+#ifdef PING6_COMMAND
+ if (address_family != AF_INET && is_inet6_addr(addresses[i]))
+ rawcmd = strdup(PING6_COMMAND);
+ else
+ rawcmd = strdup(PING_COMMAND);
+#else
+ rawcmd = strdup(PING_COMMAND);
+#endif
+
+ /* does the host address of number of packets argument come first? */
+#ifdef PING_PACKETS_FIRST
+# ifdef PING_HAS_TIMEOUT
+ xasprintf (&cmd, rawcmd, timeout_interval, max_packets, addresses[i]);
+# else
+ xasprintf (&cmd, rawcmd, max_packets, addresses[i]);
+# endif
+#else
+ xasprintf (&cmd, rawcmd, addresses[i], max_packets);
+#endif
+
+ if (verbose >= 2)
+ printf ("CMD: %s\n", cmd);
+
+ /* run the command */
+ this_result = run_ping (cmd, addresses[i]);
+
+ if (pl == UNKNOWN_PACKET_LOSS || rta < 0.0) {
+ printf ("%s\n", cmd);
+ die (STATE_UNKNOWN,
+ _("CRITICAL - Could not interpret output from ping command\n"));
+ }
+
+ if (pl >= cpl || rta >= crta || rta < 0)
+ this_result = STATE_CRITICAL;
+ else if (pl >= wpl || rta >= wrta)
+ this_result = STATE_WARNING;
+ else if (pl >= 0 && rta >= 0)
+ this_result = max_state (STATE_OK, this_result);
+
+ if (n_addresses > 1 && this_result != STATE_UNKNOWN)
+ die (STATE_OK, "%s is alive\n", addresses[i]);
+
+ if (display_html == TRUE)
+ printf ("<A HREF='%s/traceroute.cgi?%s'>", CGIURL, addresses[i]);
+ if (pl == 100)
+ printf (_("PING %s - %sPacket loss = %d%%"), state_text (this_result), warn_text,
+ pl);
+ else
+ printf (_("PING %s - %sPacket loss = %d%%, RTA = %2.2f ms"),
+ state_text (this_result), warn_text, pl, rta);
+ if (display_html == TRUE)
+ printf ("</A>");
+
+ /* Print performance data */
+ if (pl != 100) {
+ printf("|%s", fperfdata ("rta", (double) rta, "ms",
+ wrta>0?TRUE:FALSE, wrta,
+ crta>0?TRUE:FALSE, crta,
+ TRUE, 0, FALSE, 0));
+ } else {
+ printf("| rta=U;%f;%f;;", wrta, crta);
+ }
+ printf(" %s\n", perfdata ("pl", (long) pl, "%",
+ wpl>0?TRUE:FALSE, wpl,
+ cpl>0?TRUE:FALSE, cpl,
+ TRUE, 0, FALSE, 0));
+
+ if (verbose >= 2)
+ printf ("%f:%d%% %f:%d%%\n", wrta, wpl, crta, cpl);
+
+ result = max_state (result, this_result);
+ free (rawcmd);
+ free (cmd);
+ }
+
+ return result;
+}
+
+
+
+/* process command-line arguments */
+int
+process_arguments (int argc, char **argv)
+{
+ int c = 1;
+ char *ptr;
+
+ int option = 0;
+ static struct option longopts[] = {
+ STD_LONG_OPTS,
+ {"packets", required_argument, 0, 'p'},
+ {"nohtml", no_argument, 0, 'n'},
+ {"link", no_argument, 0, 'L'},
+ {"use-ipv4", no_argument, 0, '4'},
+ {"use-ipv6", no_argument, 0, '6'},
+ {0, 0, 0, 0}
+ };
+
+ if (argc < 2)
+ return ERROR;
+
+ for (c = 1; c < argc; c++) {
+ if (strcmp ("-to", argv[c]) == 0)
+ strcpy (argv[c], "-t");
+ if (strcmp ("-nohtml", argv[c]) == 0)
+ strcpy (argv[c], "-n");
+ }
+
+ while (1) {
+ c = getopt_long (argc, argv, "VvhnL46t:c:w:H:p:", longopts, &option);
+
+ if (c == -1 || c == EOF)
+ break;
+
+ switch (c) {
+ case '?': /* usage */
+ usage5 ();
+ case 'h': /* help */
+ print_help ();
+ exit (STATE_UNKNOWN);
+ break;
+ case 'V': /* version */
+ print_revision (progname, NP_VERSION);
+ exit (STATE_UNKNOWN);
+ break;
+ case 't': /* timeout period */
+ timeout_interval = atoi (optarg);
+ break;
+ case 'v': /* verbose mode */
+ verbose++;
+ break;
+ case '4': /* IPv4 only */
+ address_family = AF_INET;
+ break;
+ case '6': /* IPv6 only */
+#ifdef USE_IPV6
+ address_family = AF_INET6;
+#else
+ usage (_("IPv6 support not available\n"));
+#endif
+ break;
+ case 'H': /* hostname */
+ ptr=optarg;
+ while (1) {
+ n_addresses++;
+ if (n_addresses > max_addr) {
+ max_addr *= 2;
+ addresses = realloc (addresses, sizeof(char*) * max_addr);
+ if (addresses == NULL)
+ die (STATE_UNKNOWN, _("Could not realloc() addresses\n"));
+ }
+ addresses[n_addresses-1] = ptr;
+ if ((ptr = index (ptr, ','))) {
+ strcpy (ptr, "");
+ ptr += sizeof(char);
+ } else {
+ break;
+ }
+ }
+ break;
+ case 'p': /* number of packets to send */
+ if (is_intnonneg (optarg))
+ max_packets = atoi (optarg);
+ else
+ usage2 (_("<max_packets> (%s) must be a non-negative number\n"), optarg);
+ break;
+ case 'n': /* no HTML */
+ display_html = FALSE;
+ break;
+ case 'L': /* show HTML */
+ display_html = TRUE;
+ break;
+ case 'c':
+ get_threshold (optarg, &crta, &cpl);
+ break;
+ case 'w':
+ get_threshold (optarg, &wrta, &wpl);
+ break;
+ }
+ }
+
+ c = optind;
+ if (c == argc)
+ return validate_arguments ();
+
+ if (addresses[0] == NULL) {
+ if (is_host (argv[c]) == FALSE) {
+ usage2 (_("Invalid hostname/address"), argv[c]);
+ } else {
+ addresses[0] = argv[c++];
+ n_addresses++;
+ if (c == argc)
+ return validate_arguments ();
+ }
+ }
+
+ if (wpl == UNKNOWN_PACKET_LOSS) {
+ if (is_intpercent (argv[c]) == FALSE) {
+ printf (_("<wpl> (%s) must be an integer percentage\n"), argv[c]);
+ return ERROR;
+ } else {
+ wpl = atoi (argv[c++]);
+ if (c == argc)
+ return validate_arguments ();
+ }
+ }
+
+ if (cpl == UNKNOWN_PACKET_LOSS) {
+ if (is_intpercent (argv[c]) == FALSE) {
+ printf (_("<cpl> (%s) must be an integer percentage\n"), argv[c]);
+ return ERROR;
+ } else {
+ cpl = atoi (argv[c++]);
+ if (c == argc)
+ return validate_arguments ();
+ }
+ }
+
+ if (wrta < 0.0) {
+ if (is_negative (argv[c])) {
+ printf (_("<wrta> (%s) must be a non-negative number\n"), argv[c]);
+ return ERROR;
+ } else {
+ wrta = atof (argv[c++]);
+ if (c == argc)
+ return validate_arguments ();
+ }
+ }
+
+ if (crta < 0.0) {
+ if (is_negative (argv[c])) {
+ printf (_("<crta> (%s) must be a non-negative number\n"), argv[c]);
+ return ERROR;
+ } else {
+ crta = atof (argv[c++]);
+ if (c == argc)
+ return validate_arguments ();
+ }
+ }
+
+ if (max_packets == -1) {
+ if (is_intnonneg (argv[c])) {
+ max_packets = atoi (argv[c++]);
+ } else {
+ printf (_("<max_packets> (%s) must be a non-negative number\n"), argv[c]);
+ return ERROR;
+ }
+ }
+
+ return validate_arguments ();
+}
+
+
+
+int
+get_threshold (char *arg, float *trta, int *tpl)
+{
+ if (is_intnonneg (arg) && sscanf (arg, "%f", trta) == 1)
+ return OK;
+ else if (strpbrk (arg, ",:") && strstr (arg, "%") && sscanf (arg, "%f%*[:,]%d%%", trta, tpl) == 2)
+ return OK;
+ else if (strstr (arg, "%") && sscanf (arg, "%d%%", tpl) == 1)
+ return OK;
+
+ usage2 (_("%s: Warning threshold must be integer or percentage!\n\n"), arg);
+ return STATE_UNKNOWN;
+}
+
+
+
+int
+validate_arguments ()
+{
+ float max_seconds;
+ int i;
+
+ if (wrta < 0.0) {
+ printf (_("<wrta> was not set\n"));
+ return ERROR;
+ }
+ else if (crta < 0.0) {
+ printf (_("<crta> was not set\n"));
+ return ERROR;
+ }
+ else if (wpl == UNKNOWN_PACKET_LOSS) {
+ printf (_("<wpl> was not set\n"));
+ return ERROR;
+ }
+ else if (cpl == UNKNOWN_PACKET_LOSS) {
+ printf (_("<cpl> was not set\n"));
+ return ERROR;
+ }
+ else if (wrta > crta) {
+ printf (_("<wrta> (%f) cannot be larger than <crta> (%f)\n"), wrta, crta);
+ return ERROR;
+ }
+ else if (wpl > cpl) {
+ printf (_("<wpl> (%d) cannot be larger than <cpl> (%d)\n"), wpl, cpl);
+ return ERROR;
+ }
+
+ if (max_packets == -1)
+ max_packets = DEFAULT_MAX_PACKETS;
+
+ max_seconds = crta / 1000.0 * max_packets + max_packets;
+ if (max_seconds > timeout_interval)
+ timeout_interval = (int)max_seconds;
+
+ for (i=0; i<n_addresses; i++) {
+ if (is_host(addresses[i]) == FALSE)
+ usage2 (_("Invalid hostname/address"), addresses[i]);
+ }
+
+ if (n_addresses == 0) {
+ usage (_("You must specify a server address or host name"));
+ }
+
+ return OK;
+}
+
+
+
+int
+run_ping (const char *cmd, const char *addr)
+{
+ char buf[MAX_INPUT_BUFFER];
+ int result = STATE_UNKNOWN;
+ int match;
+
+ if ((child_process = spopen (cmd)) == NULL)
+ die (STATE_UNKNOWN, _("Could not open pipe: %s\n"), cmd);
+
+ child_stderr = fdopen (child_stderr_array[fileno (child_process)], "r");
+ if (child_stderr == NULL)
+ printf (_("Cannot open stderr for %s\n"), cmd);
+
+ while (fgets (buf, MAX_INPUT_BUFFER - 1, child_process)) {
+
+ if (verbose >= 3)
+ printf("Output: %s", buf);
+
+ result = max_state (result, error_scan (buf, addr));
+
+ /* get the percent loss statistics */
+ match = 0;
+ if((sscanf(buf,"%*d packets transmitted, %*d packets received, +%*d errors, %d%% packet loss%n",&pl,&match) && match) ||
+ (sscanf(buf,"%*d packets transmitted, %*d packets received, +%*d duplicates, %d%% packet loss%n",&pl,&match) && match) ||
+ (sscanf(buf,"%*d packets transmitted, %*d received, +%*d duplicates, %d%% packet loss%n",&pl,&match) && match) ||
+ (sscanf(buf,"%*d packets transmitted, %*d packets received, %d%% packet loss%n",&pl,&match) && match) ||
+ (sscanf(buf,"%*d packets transmitted, %*d packets received, %d%% loss, time%n",&pl,&match) && match) ||
+ (sscanf(buf,"%*d packets transmitted, %*d received, %d%% loss, time%n",&pl,&match) && match) ||
+ (sscanf(buf,"%*d packets transmitted, %*d received, %d%% packet loss, time%n",&pl,&match) && match) ||
+ (sscanf(buf,"%*d packets transmitted, %*d received, +%*d errors, %d%% packet loss%n",&pl,&match) && match) ||
+ (sscanf(buf,"%*d packets transmitted %*d received, +%*d errors, %d%% packet loss%n",&pl,&match) && match) ||
+ (sscanf(buf,"%*[^(](%d%% %*[^)])%n",&pl,&match) && match)
+ )
+ continue;
+
+ /* get the round trip average */
+ else
+ if((sscanf(buf,"round-trip min/avg/max = %*f/%f/%*f%n",&rta,&match) && match) ||
+ (sscanf(buf,"round-trip min/avg/max/mdev = %*f/%f/%*f/%*f%n",&rta,&match) && match) ||
+ (sscanf(buf,"round-trip min/avg/max/sdev = %*f/%f/%*f/%*f%n",&rta,&match) && match) ||
+ (sscanf(buf,"round-trip min/avg/max/stddev = %*f/%f/%*f/%*f%n",&rta,&match) && match) ||
+ (sscanf(buf,"round-trip min/avg/max/std-dev = %*f/%f/%*f/%*f%n",&rta,&match) && match) ||
+ (sscanf(buf,"round-trip (ms) min/avg/max = %*f/%f/%*f%n",&rta,&match) && match) ||
+ (sscanf(buf,"round-trip (ms) min/avg/max/stddev = %*f/%f/%*f/%*f%n",&rta,&match) && match) ||
+ (sscanf(buf,"rtt min/avg/max/mdev = %*f/%f/%*f/%*f ms%n",&rta,&match) && match) ||
+ (sscanf(buf, "%*[^=] = %*fms, %*[^=] = %*fms, %*[^=] = %fms%n", &rta, &match) && match)
+ )
+ continue;
+ }
+
+ /* this is needed because there is no rta if all packets are lost */
+ if (pl == 100)
+ rta = crta;
+
+ /* check stderr, setting at least WARNING if there is output here */
+ /* Add warning into warn_text */
+ while (fgets (buf, MAX_INPUT_BUFFER - 1, child_stderr)) {
+ if (
+ ! strstr(buf,"WARNING - no SO_TIMESTAMP support, falling back to SIOCGSTAMP")
+ && ! strstr(buf,"Warning: time of day goes back")
+
+ ) {
+ if (verbose >= 3) {
+ printf("Got stderr: %s", buf);
+ }
+ if ((result=error_scan(buf, addr)) == STATE_OK) {
+ result = STATE_WARNING;
+ if (warn_text == NULL) {
+ warn_text = strdup(_("System call sent warnings to stderr "));
+ } else {
+ xasprintf(&warn_text, "%s %s", warn_text, _("System call sent warnings to stderr "));
+ }
+ }
+ }
+ }
+
+ (void) fclose (child_stderr);
+
+
+ spclose (child_process);
+
+ if (warn_text == NULL)
+ warn_text = strdup("");
+
+ return result;
+}
+
+
+
+int
+error_scan (char buf[MAX_INPUT_BUFFER], const char *addr)
+{
+ if (strstr (buf, "Network is unreachable") ||
+ strstr (buf, "Destination Net Unreachable") ||
+ strstr (buf, "No route")
+ )
+ die (STATE_CRITICAL, _("CRITICAL - Network Unreachable (%s)\n"), addr);
+ else if (strstr (buf, "Destination Host Unreachable") || strstr(buf, "Address unreachable"))
+ die (STATE_CRITICAL, _("CRITICAL - Host Unreachable (%s)\n"), addr);
+ else if (strstr (buf, "Destination Port Unreachable") || strstr(buf, "Port unreachable"))
+ die (STATE_CRITICAL, _("CRITICAL - Bogus ICMP: Port Unreachable (%s)\n"), addr);
+ else if (strstr (buf, "Destination Protocol Unreachable"))
+ die (STATE_CRITICAL, _("CRITICAL - Bogus ICMP: Protocol Unreachable (%s)\n"), addr);
+ else if (strstr (buf, "Destination Net Prohibited"))
+ die (STATE_CRITICAL, _("CRITICAL - Network Prohibited (%s)\n"), addr);
+ else if (strstr (buf, "Destination Host Prohibited"))
+ die (STATE_CRITICAL, _("CRITICAL - Host Prohibited (%s)\n"), addr);
+ else if (strstr (buf, "Packet filtered") || strstr(buf, "Administratively prohibited"))
+ die (STATE_CRITICAL, _("CRITICAL - Packet Filtered (%s)\n"), addr);
+ else if (strstr (buf, "unknown host" ))
+ die (STATE_CRITICAL, _("CRITICAL - Host not found (%s)\n"), addr);
+ else if (strstr (buf, "Time to live exceeded") || strstr(buf, "Time exceeded"))
+ die (STATE_CRITICAL, _("CRITICAL - Time to live exceeded (%s)\n"), addr);
+ else if (strstr (buf, "Destination unreachable: "))
+ die (STATE_CRITICAL, _("CRITICAL - Destination Unreachable (%s)\n"), addr);
+
+ if (strstr (buf, "(DUP!)") || strstr (buf, "DUPLICATES FOUND")) {
+ if (warn_text == NULL)
+ warn_text = strdup (_(WARN_DUPLICATES));
+ else if (! strstr (warn_text, _(WARN_DUPLICATES)) &&
+ xasprintf (&warn_text, "%s %s", warn_text, _(WARN_DUPLICATES)) == -1)
+ die (STATE_UNKNOWN, _("Unable to realloc warn_text\n"));
+ return (STATE_WARNING);
+ }
+
+ return (STATE_OK);
+}
+
+
+
+void
+print_help (void)
+{
+ print_revision (progname, NP_VERSION);
+
+ printf ("Copyright (c) 1999 Ethan Galstad <nagios@nagios.org>\n");
+ printf (COPYRIGHT, copyright, email);
+
+ printf (_("Use ping to check connection statistics for a remote host."));
+
+ printf ("\n\n");
+
+ print_usage ();
+
+ printf (UT_HELP_VRSN);
+ printf (UT_EXTRA_OPTS);
+
+ printf (UT_IPv46);
+
+ printf (" %s\n", "-H, --hostname=HOST");
+ printf (" %s\n", _("host to ping"));
+ printf (" %s\n", "-w, --warning=THRESHOLD");
+ printf (" %s\n", _("warning threshold pair"));
+ printf (" %s\n", "-c, --critical=THRESHOLD");
+ printf (" %s\n", _("critical threshold pair"));
+ printf (" %s\n", "-p, --packets=INTEGER");
+ printf (" %s ", _("number of ICMP ECHO packets to send"));
+ printf (_("(Default: %d)\n"), DEFAULT_MAX_PACKETS);
+ printf (" %s\n", "-L, --link");
+ printf (" %s\n", _("show HTML in the plugin output (obsoleted by urlize)"));
+
+ printf (UT_CONN_TIMEOUT, DEFAULT_SOCKET_TIMEOUT);
+
+ printf ("\n");
+ printf ("%s\n", _("THRESHOLD is <rta>,<pl>% where <rta> is the round trip average travel"));
+ printf ("%s\n", _("time (ms) which triggers a WARNING or CRITICAL state, and <pl> is the"));
+ printf ("%s\n", _("percentage of packet loss to trigger an alarm state."));
+
+ printf ("\n");
+ printf ("%s\n", _("This plugin uses the ping command to probe the specified host for packet loss"));
+ printf ("%s\n", _("(percentage) and round trip average (milliseconds). It can produce HTML output"));
+ printf ("%s\n", _("linking to a traceroute CGI contributed by Ian Cass. The CGI can be found in"));
+ printf ("%s\n", _("the contrib area of the downloads section at http://www.nagios.org/"));
+
+ printf (UT_SUPPORT);
+}
+
+void
+print_usage (void)
+{
+ printf ("%s\n", _("Usage:"));
+ printf ("%s -H <host_address> -w <wrta>,<wpl>%% -c <crta>,<cpl>%%\n", progname);
+ printf (" [-p packets] [-t timeout] [-4|-6]\n");
+}
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