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-rw-r--r--plugins/check_ftp.c337
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diff --git a/plugins/check_ftp.c b/plugins/check_ftp.c
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+++ b/plugins/check_ftp.c
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+/******************************************************************************
+ *
+ * CHECK_FTP.C
+ *
+ * Program: FTP plugin for Nagios
+ * License: GPL
+ * Copyright (c) 1999 Ethan Galstad (nagios@nagios.org)
+ *
+ * $Id$
+ *
+ * Description:
+ *
+ * This plugin will attempt to open an FTP connection with the host.
+ * Successul connects return STATE_OK, refusals and timeouts return
+ * STATE_CRITICAL, other errors return STATE_UNKNOWN. Successful
+ * connects, but incorrect reponse messages from the host result in
+ * STATE_WARNING return values.
+ *
+ * License Information:
+ *
+ * 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
+ * (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.
+ *
+ *****************************************************************************/
+
+#include "config.h"
+#include "common.h"
+#include "netutils.h"
+#include "utils.h"
+
+#define PROGNAME "check_ftp"
+
+#define FTP_PORT 21
+#define FTP_EXPECT "220"
+#define FTP_QUIT "QUIT\n"
+
+int process_arguments (int, char **);
+int call_getopt (int, char **);
+void print_usage (void);
+void print_help (void);
+
+time_t start_time, end_time;
+int server_port = FTP_PORT;
+char *server_address = NULL;
+char *server_expect = NULL;
+int warning_time = 0;
+int check_warning_time = FALSE;
+int critical_time = 0;
+int check_critical_time = FALSE;
+int verbose = FALSE;
+
+
+int
+main (int argc, char **argv)
+{
+ int sd;
+ int result;
+ char buffer[MAX_INPUT_BUFFER];
+
+ if (process_arguments (argc, argv) == ERROR)
+ usage ("Could not parse arguments\n");
+
+ /* initialize alarm signal handling */
+ signal (SIGALRM, socket_timeout_alarm_handler);
+
+ /* set socket timeout */
+ alarm (socket_timeout);
+
+ /* try to connect to the host at the given port number */
+ time (&start_time);
+ result = my_tcp_connect (server_address, server_port, &sd);
+
+ /* we connected, so close connection before exiting */
+ if (result == STATE_OK) {
+
+ /* watch for the FTP connection string */
+ result = recv (sd, buffer, MAX_INPUT_BUFFER - 1, 0);
+
+ /* strip the buffer of carriage returns */
+ strip (buffer);
+
+ /* return a WARNING status if we couldn't read any data */
+ if (result == -1) {
+ printf ("recv() failed\n");
+ result = STATE_WARNING;
+ }
+
+ else {
+
+ /* make sure we find the response we are looking for */
+ if (!strstr (buffer, server_expect)) {
+
+ if (server_port == FTP_PORT)
+ printf ("Invalid FTP response received from host\n");
+ else
+ printf ("Invalid FTP response received from host on port %d\n",
+ server_port);
+ result = STATE_WARNING;
+ }
+
+ else {
+ time (&end_time);
+
+ result = STATE_OK;
+
+ if (check_critical_time == TRUE
+ && (end_time - start_time) > critical_time) result =
+ STATE_CRITICAL;
+ else if (check_warning_time == TRUE
+ && (end_time - start_time) > warning_time) result =
+ STATE_WARNING;
+
+ if (verbose == TRUE)
+ printf ("FTP %s - %d sec. response time, %s\n",
+ (result == STATE_OK) ? "ok" : "problem",
+ (int) (end_time - start_time), buffer);
+ else
+ printf ("FTP %s - %d second response time\n",
+ (result == STATE_OK) ? "ok" : "problem",
+ (int) (end_time - start_time));
+ }
+ }
+
+ /* close the connection */
+ send (sd, FTP_QUIT, strlen (FTP_QUIT), 0);
+ close (sd);
+ }
+
+ /* reset the alarm */
+ alarm (0);
+
+ return result;
+}
+
+
+
+
+
+
+/* process command-line arguments */
+int
+process_arguments (int argc, char **argv)
+{
+ int c;
+
+ if (argc < 2)
+ usage ("\n");
+
+ for (c = 1; c < argc; c++) {
+ if (strcmp ("-to", argv[c]) == 0)
+ strcpy (argv[c], "-t");
+ else if (strcmp ("-wt", argv[c]) == 0)
+ strcpy (argv[c], "-w");
+ else if (strcmp ("-ct", argv[c]) == 0)
+ strcpy (argv[c], "-c");
+ }
+
+ c = 0;
+ while ((c += call_getopt (argc - c, &argv[c])) < argc) {
+
+ if (is_option (argv[c]))
+ continue;
+
+ if (server_address == NULL) {
+ if (argc > c) {
+ if (is_host (argv[c]) == FALSE)
+ usage ("Invalid host name/address\n");
+ server_address = argv[c];
+ }
+ else {
+ usage ("Host name was not supplied\n");
+ }
+ }
+ }
+
+ if (server_expect == NULL)
+ server_expect = strscpy (NULL, FTP_EXPECT);
+
+ return OK;
+}
+
+
+
+
+
+int
+call_getopt (int argc, char **argv)
+{
+ int c, i = 0;
+
+#ifdef HAVE_GETOPT_H
+ int option_index = 0;
+ static struct option long_options[] = {
+ {"hostname", required_argument, 0, 'H'},
+ {"expect", required_argument, 0, 'e'},
+ {"critical", required_argument, 0, 'c'},
+ {"warning", required_argument, 0, 'w'},
+ {"timeout", required_argument, 0, 'w'},
+ {"port", required_argument, 0, 'p'},
+ {"verbose", no_argument, 0, 'v'},
+ {"version", no_argument, 0, 'V'},
+ {"help", no_argument, 0, 'h'},
+ {0, 0, 0, 0}
+ };
+#endif
+
+ while (1) {
+#ifdef HAVE_GETOPT_H
+ c =
+ getopt_long (argc, argv, "+hVvH:e:c:w:t:p:", long_options,
+ &option_index);
+#else
+ c = getopt (argc, argv, "+hVvH:e:c:w:t:p:");
+#endif
+
+ i++;
+
+ if (c == -1 || c == EOF || c == 1)
+ break;
+
+ switch (c) {
+ case 'H':
+ case 'e':
+ case 'c':
+ case 'w':
+ case 't':
+ case 'p':
+ i++;
+ }
+
+ switch (c) {
+ case '?': /* print short usage statement if args not parsable */
+ printf ("%s: Unknown argument: %s\n\n", my_basename (argv[0]), optarg);
+ print_usage ();
+ exit (STATE_UNKNOWN);
+ case 'h': /* help */
+ print_help ();
+ exit (STATE_OK);
+ case 'V': /* version */
+ print_revision (my_basename (argv[0]), "$Revision$");
+ exit (STATE_OK);
+ case 'v': /* verbose mode */
+ verbose = TRUE;
+ break;
+ case 'H': /* hostname */
+ if (is_host (optarg) == FALSE)
+ usage ("Invalid host name/address\n");
+ server_address = optarg;
+ break;
+ case 'e': /* expect */
+ server_expect = optarg;
+ break;
+ case 'c': /* critical */
+ if (!is_intnonneg (optarg))
+ usage ("Critical threshold must be a nonnegative integer\n");
+ critical_time = atoi (optarg);
+ check_critical_time = TRUE;
+ break;
+ case 'w': /* warning */
+ if (!is_intnonneg (optarg))
+ usage ("Warning threshold must be a nonnegative integer\n");
+ warning_time = atoi (optarg);
+ check_warning_time = TRUE;
+ break;
+ case 't': /* timeout */
+ if (!is_intnonneg (optarg))
+ usage ("Timeout interval must be a nonnegative integer\n");
+ socket_timeout = atoi (optarg);
+ break;
+ case 'p': /* port */
+ if (!is_intnonneg (optarg))
+ usage ("Serevr port must be a nonnegative integer\n");
+ server_port = atoi (optarg);
+ break;
+ }
+ }
+ return i;
+}
+
+
+
+
+
+void
+print_usage (void)
+{
+ printf
+ ("Usage: %s -H <host_address> [-e expect] [-p port] [-w warn_time]\n"
+ " [-c crit_time] [-t to_sec] [-v]\n", PROGNAME);
+}
+
+
+
+
+
+void
+print_help (void)
+{
+ print_revision (PROGNAME, "$Revision$");
+ printf
+ ("Copyright (c) 1999 Ethan Galstad (nagios@nagios.org)\n\n"
+ "This plugin tests an FTP connection with the specified host.\n\n");
+ print_usage ();
+ printf
+ ("Options:\n"
+ " -H, --hostname=ADDRESS\n"
+ " Host name argument for servers using host headers (use numeric\n"
+ " address if possible to bypass DNS lookup).\n"
+ " -e, --expect=STRING\n"
+ " String to expect in first line of server response (default: %s)\n"
+ " -p, --port=INTEGER\n"
+ " Port number (default: %d)\n"
+ " -w, --warning=INTEGER\n"
+ " Response time to result in warning status (seconds)\n"
+ " -c, --critical=INTEGER\n"
+ " Response time to result in critical status (seconds)\n"
+ " -t, --timeout=INTEGER\n"
+ " Seconds before connection times out (default: %d)\n"
+ " -v"
+ " Show details for command-line debugging (do not use with nagios server)\n"
+ " -h, --help\n"
+ " Print detailed help screen\n"
+ " -V, --version\n"
+ " Print version information\n",
+ FTP_EXPECT, FTP_PORT, DEFAULT_SOCKET_TIMEOUT);
+}
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