1 files changed, 418 insertions, 0 deletions
diff --git a/plugins/check_nntp.c b/plugins/check_nntp.c
new file mode 100644
index 00000000..4bdc83ab
--- /dev/null
+++ b/plugins/check_nntp.c
@@ -0,0 +1,418 @@
+/******************************************************************************
+ *
+ * CHECK_NNTP.C
+ *
+ * Program: NNTP plugin for Nagios
+ * License: GPL
+ * Copyright (c) 1999 Ethan Galstad (nagios@nagios.org)
+ *
+ * $Id$
+ *
+ * Description:
+ *
+ * This plugin will attempt to open an NNTP 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.  An invalid newsgroup (if the -g
+ * option is used) results in a STATE_WARNING value.
+ *
+ * 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_nntp"
+
+#define PORT 119
+#define EXPECT1A "200"					/* posting allowed */
+#define EXPECT1B "201"					/* posting not allowed */
+#define EXPECT "NNTP"
+#define QUIT "QUIT\r\n"
+#define MODEREADER "MODE READER\r\n"
+
+int process_arguments (int, char **);
+int call_getopt (int, char **);
+int validate_arguments (void);
+int check_disk (int usp, int free_disk);
+void print_help (void);
+void print_usage (void);
+
+int server_port = PORT;
+char *server_expect = NULL;
+char *server_address = NULL;
+char *newsgroup = NULL;
+int check_newsgroup = FALSE;
+int send_modereader = FALSE;
+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)
+{
+	char buffer[MAX_INPUT_BUFFER] = "";
+	int sd;
+	int result;
+	int recv_result;
+
+	if (process_arguments (argc, argv) != OK)
+		usage ("Invalid command arguments supplied\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 */
+	if (result == STATE_OK) {
+
+		/* watch for the NNTP connection string */
+		recv_result = recv (sd, buffer, MAX_INPUT_BUFFER - 1, 0);
+
+		/* return a WARNING status if we couldn't read any data */
+		if (recv_result == -1) {
+
+			printf ("recv() failed\n");
+			result = STATE_WARNING;
+
+		}
+		else {
+
+			/* strip carriage returns from buffer */
+			strip (buffer);
+
+			/* make sure we find the response we are looking for */
+			if (strstr (buffer, EXPECT1A) != buffer
+					&& strstr (buffer, EXPECT1B) != buffer) {
+				printf ("Invalid NNTP response received from host: %s\n", buffer);
+				result = STATE_WARNING;
+			}
+
+			/* optionally send mode reader */
+			/* added 2000-09-18 by Andreas M. Kirchwitz <amk@krell.snafu.de> including some other minor fixes */
+			if (send_modereader == TRUE) {
+				send (sd, MODEREADER, strlen (MODEREADER), 0);
+				recv_result = recv (sd, buffer, MAX_INPUT_BUFFER - 1, 0);
+				if (recv_result == -1)
+					strcpy (buffer, "");
+				else
+					buffer[recv_result] = 0;
+				strip (buffer);
+				if ((strstr (buffer, EXPECT1A) != buffer)
+						&& (strstr (buffer, EXPECT1B) != buffer)) {
+					printf ("Unexpected NNTP response received from host");
+					result = STATE_WARNING;
+				}
+			}
+
+			if (server_expect && !strstr (buffer, server_expect)) {
+				printf ("Invalid NNTP header received from host: %s\n", buffer);
+				result = STATE_WARNING;
+			}
+
+			if (check_newsgroup == TRUE) {
+				sprintf (buffer, "GROUP %s\r\n", newsgroup);
+				send (sd, buffer, strlen (buffer), 0);
+				recv_result = recv (sd, buffer, MAX_INPUT_BUFFER - 1, 0);
+				if (recv_result == -1)
+					strcpy (buffer, "");
+				else
+					buffer[recv_result] = 0;
+				strip (buffer);
+				if (strstr (buffer, "211") != buffer) {
+					printf ("NNTP problem - newsgroup '%s' not found\n", newsgroup);
+					result = STATE_WARNING;
+				}
+			}
+
+			if (result == STATE_OK) {
+				time (&end_time);
+				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)
+					printf ("NNTP %s - %d sec. response time, %s\n",
+									(result == STATE_OK) ? "ok" : "problem",
+									(int) (end_time - start_time), buffer);
+				else
+					printf ("NNTP %s - %d second response time\n",
+									(result == STATE_OK) ? "ok" : "problem",
+									(int) (end_time - start_time));
+			}
+
+		}
+
+		/* close the connection */
+		send (sd, QUIT, strlen (QUIT), 0);
+		close (sd);
+
+	}
+
+	/* reset the alarm timeout */
+	alarm (0);
+
+	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");
+		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 (is_host (argv[c])) {
+				server_address = argv[c];
+			}
+			else {
+				usage ("Invalid host name");
+			}
+		}
+	}
+
+	if (server_address == NULL)
+		server_address = strscpy (NULL, "127.0.0.1");
+
+/*  	if (server_expect==NULL) */
+/*  		server_expect=strscpy(NULL,EXPECT); */
+
+	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[] = {
+		{"hostname", required_argument, 0, 'H'},
+		{"expect", required_argument, 0, 'e'},
+		{"critical", required_argument, 0, 'c'},
+		{"warning", required_argument, 0, 'w'},
+		{"port", required_argument, 0, 'P'},
+		{"modereader", required_argument, 0, 'M'},
+		{"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, "+hVMvt:p:e:c:w:H:", long_options,
+									 &option_index);
+#else
+		c = getopt (argc, argv, "+?hVMvt:p:e:c:w:H:");
+#endif
+
+		i++;
+
+		if (c == -1 || c == EOF || c == 1)
+			break;
+
+		switch (c) {
+		case 't':
+		case 'p':
+		case 'e':
+		case 'c':
+		case 'w':
+		case 'H':
+			i++;
+		}
+
+		switch (c) {
+		case 'H':									/* hostname */
+			if (is_host (optarg)) {
+				server_address = optarg;
+			}
+			else {
+				usage ("Invalid host name\n");
+			}
+			break;
+		case 'p':									/* port */
+			if (is_intpos (optarg)) {
+				server_port = atoi (optarg);
+			}
+			else {
+				usage ("Server port must be a positive integer\n");
+			}
+			break;
+		case 'M':									/* mode reader */
+			send_modereader = TRUE;
+			break;
+		case 'e':									/* expect */
+			server_expect = optarg;
+			break;
+		case 'g':									/* newsgroup */
+			newsgroup = optarg;
+			check_newsgroup = TRUE;
+			break;
+		case 'c':									/* critical time threshold */
+			if (is_intnonneg (optarg)) {
+				critical_time = atoi (optarg);
+				check_critical_time = TRUE;
+			}
+			else {
+				usage ("Critical time must be a nonnegative integer\n");
+			}
+			break;
+		case 'w':									/* warning time threshold */
+			if (is_intnonneg (optarg)) {
+				warning_time = atoi (optarg);
+				check_warning_time = TRUE;
+			}
+			else {
+				usage ("Warning time must be a nonnegative integer\n");
+			}
+			break;
+		case 'v':									/* verbose */
+			verbose = TRUE;
+			break;
+		case 't':									/* timeout */
+			if (is_intnonneg (optarg)) {
+				socket_timeout = atoi (optarg);
+			}
+			else {
+				usage ("Time interval must be a nonnegative integer\n");
+			}
+			break;
+		case 'V':									/* version */
+			print_revision (PROGNAME, "$Revision$");
+			exit (STATE_OK);
+		case 'h':									/* help */
+			print_help ();
+			exit (STATE_OK);
+		case '?':									/* help */
+			usage ("Invalid argument\n");
+		}
+	}
+	return i;
+}
+
+
+
+
+
+int
+validate_arguments (void)
+{
+	return OK;
+}
+
+
+
+
+
+void
+print_help (void)
+{
+	print_revision (PROGNAME, "$Revision$");
+	printf
+		("Copyright (c) 2000 Ethan Galstad/Karl DeBisschop\n\n"
+		 "This plugin tests the NNTP service on the specified host.\n\n");
+	print_usage ();
+	printf
+		("\nOptions:\n"
+		 " -H, --hostname=STRING or IPADDRESS\n"
+		 "   Check server on the indicated host\n"
+		 " -p, --port=INTEGER\n"
+		 "   Make connection on the indicated port (default: %d)\n"
+		 " -e, --expect=STRING\n"
+		 "   String to expect in first line of server response (default: %s)\n"
+		 " -g, --group=STRING\n"
+		 "   Newsgroup to poll\n"
+		 " -w, --warning=INTEGER\n"
+		 "   Seconds necessary to result in a warning status\n"
+		 " -c, --critical=INTEGER\n"
+		 "   Seconds necessary to result in a critical status\n"
+		 " -t, --timeout=INTEGER\n"
+		 "   Seconds before connection attempt times out (default: %d)\n"
+		 " -M\n"
+		 "   Send \"MODE READER\" after initial connect.\n"
+		 " -v, --verbose\n"
+		 "   Print extra information (command-line use only)\n"
+		 " -h, --help\n"
+		 "   Print detailed help screen\n"
+		 " -V, --version\n"
+		 "   Print version information\n\n",
+		 PORT, EXPECT, DEFAULT_SOCKET_TIMEOUT);
+	support ();
+}
+
+
+
+
+
+void
+print_usage (void)
+{
+	printf
+		("Usage: %s -H host [-e expect] [-g group] [-p port] [-w warn] [-c crit]\n"
+		 "            [-t timeout] [-v]\n"
+		 "       %s --help\n"
+		 "       %s --version\n", PROGNAME, PROGNAME, PROGNAME);
+}