Initial revision

git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@2 f882894a-f735-0410-b71e-b25c423dba1c

1 files changed, 492 insertions, 0 deletions

diff --git a/plugins/check_ping.c b/plugins/check_ping.c
new file mode 100644
index 0000000..b61b41b
--- /dev/null
+++ b/plugins/check_ping.c
@@ -0,0 +1,492 @@
+/*****************************************************************************
+*
+* CHECK_PING.C
+*
+* Program: Ping plugin for Nagios
+* License: GPL
+* Copyright (c) 1999 Ethan Galstad (nagios@nagios.org)
+*
+* $Id$
+*
+*****************************************************************************/
+
+#define PROGNAME "check_pgsql"
+#define REVISION "$Revision$"
+#define COPYRIGHT "1999-2001"
+#define AUTHOR "Ethan Galstad/Karl DeBisschop"
+#define EMAIL "kdebisschop@users.sourceforge.net"
+#define SUMMARY "Use ping to check connection statistics for a remote host.\n"
+
+#define OPTIONS "\
+-H <host_address> -w <wrta>,<wpl>%% -c <crta>,<cpl>%%\n\
+       [-p packets] [-t timeout] [-L]\n"
+
+#define LONGOPTIONS "\
+-H, --hostname=HOST\n\
+   host to ping\n\
+-w, --warning=THRESHOLD\n\
+   warning threshold pair\n\
+-c, --critical=THRESHOLD\n\
+   critical threshold pair\n\
+-p, --packets=INTEGER\n\
+   number of ICMP ECHO packets to send (Default: %d)\n\
+-t, --timeout=INTEGER\n\
+   optional specified timeout in second (Default: %d)\n\
+-L, --link\n\
+   show HTML in the plugin output (obsoleted by urlize)\n\
+THRESHOLD is <rta>,<pl>%% where <rta> is the round trip average travel\n\
+time (ms) which triggers a WARNING or CRITICAL state, and <pl> is the\n\
+percentage of packet loss to trigger an alarm state.\n"
+
+#define DESCRIPTION "\
+This plugin uses the ping command to probe the specified host for packet loss\n\
+(percentage) and round trip average (milliseconds). It can produce HTML output\n\
+linking to a traceroute CGI contributed by Ian Cass. The CGI can be found in\n\
+the contrib area of the downloads section at http://www.nagios.org\n\n"
+
+#include "config.h"
+#include "common.h"
+#include "popen.h"
+#include "utils.h"
+
+#define UNKNOWN_PACKET_LOSS 200 /* 200% */
+#define UNKNOWN_TRIP_TIME -1.0  /* -1 seconds */
+#define DEFAULT_MAX_PACKETS 5           /* default no. of ICMP ECHO packets */
+
+#define WARN_DUPLICATES "DUPLICATES FOUND! "
+
+int process_arguments (int, char **);
+int call_getopt (int, char **);
+int get_threshold (char *, float *, int *);
+int validate_arguments (void);
+int run_ping (char *);
+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 *server_address = NULL;
+int max_packets = -1;
+int verbose = FALSE;
+
+float rta = UNKNOWN_TRIP_TIME;
+int pl = UNKNOWN_PACKET_LOSS;
+
+char *warn_text = NULL;
+
+int
+main (int argc, char **argv)
+{
+        char *command_line = NULL;
+        int result = STATE_UNKNOWN;
+
+        if (process_arguments (argc, argv) == ERROR)
+                usage ("Could not parse arguments");
+
+        /* does the host address of number of packets argument come first? */
+#ifdef PING_PACKETS_FIRST
+        command_line =
+                ssprintf (command_line, PING_COMMAND, max_packets, server_address);
+#else
+        command_line =
+                ssprintf (command_line, PING_COMMAND, server_address, max_packets);
+#endif
+
+        /* Set signal handling and alarm */
+        if (signal (SIGALRM, popen_timeout_alarm_handler) == SIG_ERR) {
+                printf ("Cannot catch SIGALRM");
+                return STATE_UNKNOWN;
+        }
+
+        /* handle timeouts gracefully */
+        alarm (timeout_interval);
+
+        if (verbose)
+                printf ("%s ==> ", command_line);
+
+        /* run the command */
+        run_ping (command_line);
+
+        if (pl == UNKNOWN_PACKET_LOSS || rta == UNKNOWN_TRIP_TIME) {
+                printf ("%s\n", command_line);
+                terminate (STATE_UNKNOWN,
+                                                         "Error: Could not interpret output from ping command\n");
+        }
+
+        if (pl >= cpl || rta >= crta || rta < 0)
+                result = STATE_CRITICAL;
+        else if (pl >= wpl || rta >= wrta)
+                result = STATE_WARNING;
+        else if (pl < wpl && rta < wrta && pl >= 0 && rta >= 0)
+                result = max (result, STATE_OK);
+
+        if (display_html == TRUE)
+                printf ("<A HREF='%s/traceroute.cgi?%s'>", CGIURL, server_address);
+        if (pl == 100)
+                printf ("PING %s - %sPacket loss = %d%%", state_text (result), warn_text,
+                                                pl);
+        else
+                printf ("PING %s - %sPacket loss = %d%%, RTA = %2.2f ms",
+                                                state_text (result), warn_text, pl, rta);
+        if (display_html == TRUE)
+                printf ("</A>");
+        printf ("\n");
+
+        if (verbose)
+                printf ("%f:%d%% %f:%d%%\n", wrta, wpl, crta, cpl);
+
+        return result;
+}
+
+
+/* process command-line arguments */
+int
+process_arguments (int argc, char **argv)
+{
+        int c;
+
+        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");
+        }
+
+        c = 0;
+        while ((c += call_getopt (argc - c, &argv[c])) < argc) {
+
+                if (is_option (argv[c]))
+                        continue;
+
+                if (server_address == NULL) {
+                        if (is_host (argv[c]) == FALSE) {
+                                printf ("Invalid host name/address: %s\n\n", argv[c]);
+                                return ERROR;
+                        }
+                        server_address = argv[c];
+                }
+                else if (wpl == UNKNOWN_PACKET_LOSS) {
+                        if (is_intpercent (argv[c]) == FALSE) {
+                                printf ("<wpl> (%s) must be an integer percentage\n", argv[c]);
+                                return ERROR;
+                        }
+                        wpl = atoi (argv[c]);
+                }
+                else if (cpl == UNKNOWN_PACKET_LOSS) {
+                        if (is_intpercent (argv[c]) == FALSE) {
+                                printf ("<cpl> (%s) must be an integer percentage\n", argv[c]);
+                                return ERROR;
+                        }
+                        cpl = atoi (argv[c]);
+                }
+                else if (wrta == UNKNOWN_TRIP_TIME) {
+                        if (is_negative (argv[c])) {
+                                printf ("<wrta> (%s) must be a non-negative number\n", argv[c]);
+                                return ERROR;
+                        }
+                        wrta = atof (argv[c]);
+                }
+                else if (crta == UNKNOWN_TRIP_TIME) {
+                        if (is_negative (argv[c])) {
+                                printf ("<crta> (%s) must be a non-negative number\n", argv[c]);
+                                return ERROR;
+                        }
+                        crta = atof (argv[c]);
+                }
+                else 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
+call_getopt (int argc, char **argv)
+{
+        int c, i = 0;
+
+#ifdef HAVE_GETOPT_H
+        int option_index = 0;
+        static struct option long_options[] = {
+                {"help", no_argument, 0, 'h'},
+                {"version", no_argument, 0, 'V'},
+                {"verbose", no_argument, 0, 'v'},
+                {"nohtml", no_argument, 0, 'n'},
+                {"link", no_argument, 0, 'L'},
+                {"timeout", required_argument, 0, 't'},
+                {"critical", required_argument, 0, 'c'},
+                {"warning", required_argument, 0, 'w'},
+                {"hostname", required_argument, 0, 'H'},
+                {"packets", required_argument, 0, 'p'},
+                {0, 0, 0, 0}
+        };
+#endif
+
+        while (1) {
+#ifdef HAVE_GETOPT_H
+                c =
+                        getopt_long (argc, argv, "+hVvt:c:w:H:p:nL", long_options,
+                                                                         &option_index);
+#else
+                c = getopt (argc, argv, "+hVvt:c:w:H:p:nL");
+#endif
+
+                i++;
+
+                if (c == -1 || c == EOF || c == 1)
+                        break;
+
+                switch (c) {
+                case 't':
+                case 'c':
+                case 'w':
+                case 'H':
+                case 'p':
+                        i++;
+                }
+
+                switch (c) {
+                case '?':                                                                       /* print short usage statement if args not parsable */
+                        usage2 ("Unknown argument", optarg);
+                case 'h':                                                                       /* help */
+                        print_help ();
+                        exit (STATE_OK);
+                case 'V':                                                                       /* version */
+                        print_revision (PROGNAME, REVISION);
+                        exit (STATE_OK);
+                case 't':                                                                       /* timeout period */
+                        timeout_interval = atoi (optarg);
+                        break;
+                case 'v':                                                                       /* verbose mode */
+                        verbose = TRUE;
+                        break;
+                case 'H':                                                                       /* hostname */
+                        if (is_host (optarg) == FALSE)
+                                usage2 ("Invalid host name/address", optarg);
+                        server_address = optarg;
+                        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;
+                }
+        }
+
+        return i;
+}
+
+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;
+        else
+                usage2 ("%s: Warning threshold must be integer or percentage!\n\n", arg);
+
+}
+
+int
+validate_arguments ()
+{
+        float max_seconds;
+
+        if (wrta == UNKNOWN_TRIP_TIME) {
+                printf ("<wrta> was not set\n");
+                return ERROR;
+        }
+        else if (crta == UNKNOWN_TRIP_TIME) {
+                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;
+
+        return OK;
+}
+
+
+int
+run_ping (char *command_line)
+{
+        char input_buffer[MAX_INPUT_BUFFER];
+        int result = STATE_UNKNOWN;
+
+        warn_text = malloc (1);
+        if (warn_text == NULL)
+                terminate (STATE_UNKNOWN, "unable to malloc warn_text");
+        warn_text[0] = 0;
+
+        if ((child_process = spopen (command_line)) == NULL) {
+                printf ("Cannot open pipe: ");
+                terminate (STATE_UNKNOWN, command_line);
+        }
+        child_stderr = fdopen (child_stderr_array[fileno (child_process)], "r");
+        if (child_stderr == NULL)
+                printf ("Cannot open stderr for %s\n", command_line);
+
+        while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process)) {
+
+                if (strstr (input_buffer, "(DUP!)")) {
+                        result = max (result, STATE_WARNING);
+                        warn_text = realloc (warn_text, strlen (WARN_DUPLICATES) + 1);
+                        if (warn_text == NULL)
+                                terminate (STATE_UNKNOWN, "unable to realloc warn_text");
+                        strcpy (warn_text, WARN_DUPLICATES);
+                }
+
+                /* get the percent loss statistics */
+                if (sscanf
+                                (input_buffer,
+                                 "%*d packets transmitted, %*d packets received, +%*d errors, %d%% packet loss",
+                                 &pl) == 1
+                                || sscanf (input_buffer,
+                                                                         "%*d packets transmitted, %*d packets received, %d%% packet loss",
+                                                                         &pl) == 1)
+                        continue;
+
+                /* get the round trip average */
+                else
+                        if (sscanf (input_buffer, "round-trip min/avg/max = %*f/%f/%*f", &rta)
+                                        == 1
+                                        || sscanf (input_buffer,
+                                                                                 "round-trip min/avg/max/mdev = %*f/%f/%*f/%*f",
+                                                                                 &rta) == 1
+                                        || sscanf (input_buffer,
+                                                                                 "round-trip min/avg/max/sdev = %*f/%f/%*f/%*f",
+                                                                                 &rta) == 1
+                                        || sscanf (input_buffer,
+                                                                                 "round-trip min/avg/max/stddev = %*f/%f/%*f/%*f",
+                                                                                 &rta) == 1
+                                        || sscanf (input_buffer,
+                                                                                 "round-trip min/avg/max/std-dev = %*f/%f/%*f/%*f",
+                                                                                 &rta) == 1
+                                        || sscanf (input_buffer, "round-trip (ms) min/avg/max = %*f/%f/%*f",
+                                                                                 &rta) == 1)
+                        continue;
+        }
+
+        /* this is needed because there is no rta if all packets are lost */
+        if (pl == 100)
+                rta = crta;
+
+
+        /* check stderr */
+        while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_stderr)) {
+                if (strstr
+                                (input_buffer,
+                                 "Warning: no SO_TIMESTAMP support, falling back to SIOCGSTAMP"))
+                                continue;
+
+                if (strstr (input_buffer, "Network is unreachable"))
+                        terminate (STATE_CRITICAL, "PING CRITICAL - Network unreachable (%s)",
+                                                                 server_address);
+                else if (strstr (input_buffer, "Destination Host Unreachable"))
+                        terminate (STATE_CRITICAL, "PING CRITICAL - Host Unreachable (%s)",
+                                                                 server_address);
+
+                warn_text =
+                        realloc (warn_text, strlen (warn_text) + strlen (input_buffer) + 2);
+                if (warn_text == NULL)
+                        terminate (STATE_UNKNOWN, "unable to realloc warn_text");
+                if (strlen (warn_text) == 0)
+                        strcpy (warn_text, input_buffer);
+                else
+                        sprintf (warn_text, "%s %s", warn_text, input_buffer);
+
+                if (strstr (input_buffer, "DUPLICATES FOUND"))
+                        result = max (result, STATE_WARNING);
+                else
+                        result = max (result, STATE_CRITICAL);
+        }
+        (void) fclose (child_stderr);
+
+
+        /* close the pipe - WARNING if status is set */
+        if (spclose (child_process))
+                result = max (result, STATE_WARNING);
+
+        return result;
+}
+
+
+void
+print_usage (void)
+{
+        printf ("Usage:\n" " %s %s\n"
+#ifdef HAVE_GETOPT_H
+                                        " %s (-h | --help) for detailed help\n"
+                                        " %s (-V | --version) for version information\n",
+#else
+                                        " %s -h for detailed help\n"
+                                        " %s -V for version information\n",
+#endif
+                                        PROGNAME, OPTIONS, PROGNAME, PROGNAME);
+}
+
+void
+print_help (void)
+{
+        print_revision (PROGNAME, REVISION);
+        printf
+                ("Copyright (c) %s %s <%s>\n\n%s\n",
+                 COPYRIGHT, AUTHOR, EMAIL, SUMMARY);
+        print_usage ();
+        printf
+                ("\nOptions:\n" LONGOPTIONS "\n" DESCRIPTION "\n", 
+                 DEFAULT_MAX_PACKETS, DEFAULT_SOCKET_TIMEOUT);
+        support ();
+}