![[tokkee]](http://tokkee.org/images/avatar.png){kind=avatar}
diff --git a/plugins/check_ssh.c b/plugins/check_ssh.c
index 79e17017ba24755631d0891df01336fc81acd13c..9a1934383111ff5b5b738d82bb7731b8af546dc6 100644 (file)
--- a/plugins/check_ssh.c
+++ b/plugins/check_ssh.c
-/******************************************************************************
+/*****************************************************************************
+*
+* Nagios check_ssh plugin
+*
+* License: GPL
+* Copyright (c) 2000-2007 Nagios Plugins Development Team
+*
+* Description:
+*
+* This file contains the check_ssh plugin
+*
+* Try to connect to an SSH server at specified server and port
+*
+*
+* 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/>.
+*
+*
+*****************************************************************************/
- 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.
-
-******************************************************************************/
+const char *progname = "check_ssh";
+const char *copyright = "2000-2007";
+const char *email = "nagiosplug-devel@lists.sourceforge.net";
#include "common.h"
#include "netutils.h"
#include "utils.h"
-const char *progname = "check_ssh";
-const char *revision = "$Revision$";
-const char *copyright = "2000-2003";
-const char *email = "nagiosplug-devel@lists.sourceforge.net";
-
#ifndef MSG_DONTWAIT
#define MSG_DONTWAIT 0
#endif
int port = -1;
char *server_name = NULL;
+char *remote_version = NULL;
int verbose = FALSE;
int process_arguments (int, char **);
void print_help (void);
void print_usage (void);
-int ssh_connect (char *haddr, int hport);
+int ssh_connect (char *haddr, int hport, char *remote_version);
+
+
int
main (int argc, char **argv)
{
- int result;
+ int result = STATE_UNKNOWN;
setlocale (LC_ALL, "");
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
+ /* Parse extra opts if any */
+ argv=np_extra_opts (&argc, argv, progname);
+
if (process_arguments (argc, argv) == ERROR)
- usage (_("Could not parse arguments\n"));
+ usage4 (_("Could not parse arguments"));
/* initialize alarm signal handling */
signal (SIGALRM, socket_timeout_alarm_handler);
+
alarm (socket_timeout);
/* ssh_connect exits if error is found */
- result = ssh_connect (server_name, port);
+ result = ssh_connect (server_name, port, remote_version);
alarm (0);
}
+
/* process command-line arguments */
int
process_arguments (int argc, char **argv)
static struct option longopts[] = {
{"help", no_argument, 0, 'h'},
{"version", no_argument, 0, 'V'},
- {"host", required_argument, 0, 'H'},
+ {"host", required_argument, 0, 'H'}, /* backward compatibility */
+ {"hostname", required_argument, 0, 'H'},
{"port", required_argument, 0, 'p'},
{"use-ipv4", no_argument, 0, '4'},
{"use-ipv6", no_argument, 0, '6'},
{"timeout", required_argument, 0, 't'},
{"verbose", no_argument, 0, 'v'},
+ {"remote-version", required_argument, 0, 'r'},
{0, 0, 0, 0}
};
strcpy (argv[c], "-t");
while (1) {
- c = getopt_long (argc, argv, "+Vhv46t:H:p:", longopts, &option);
+ c = getopt_long (argc, argv, "+Vhv46t:r:H:p:", longopts, &option);
if (c == -1 || c == EOF)
break;
switch (c) {
case '?': /* help */
- usage ("");
+ usage5 ();
case 'V': /* version */
- print_revision (progname, revision);
+ print_revision (progname, NP_VERSION);
exit (STATE_OK);
case 'h': /* help */
print_help ();
exit (STATE_OK);
- case 'v': /* verose */
+ case 'v': /* verbose */
verbose = TRUE;
break;
case 't': /* timeout period */
if (!is_integer (optarg))
- usage (_("Timeout Interval must be an integer!\n\n"));
+ usage2 (_("Timeout interval must be a positive integer"), optarg);
else
socket_timeout = atoi (optarg);
break;
#ifdef USE_IPV6
address_family = AF_INET6;
#else
- usage (_("IPv6 support not available\n"));
+ usage4 (_("IPv6 support not available"));
#endif
break;
+ case 'r': /* remote version */
+ remote_version = optarg;
+ break;
case 'H': /* host */
if (is_host (optarg) == FALSE)
- usage ("Invalid hostname/address\n");
+ usage2 (_("Invalid hostname/address"), optarg);
server_name = optarg;
break;
case 'p': /* port */
port = atoi (optarg);
}
else {
- printf ("Port number nust be a positive integer: %s\n", optarg);
- usage ("");
+ usage2 (_("Port number must be a positive integer"), optarg);
}
}
-
}
c = optind;
*
*-----------------------------------------------------------------------*/
+
int
-ssh_connect (char *haddr, int hport)
+ssh_connect (char *haddr, int hport, char *remote_version)
{
int sd;
int result;
char *buffer = NULL;
char *ssh_proto = NULL;
char *ssh_server = NULL;
- char rev_no[20];
-
- sscanf ("$Revision$", "$Revision: %[0123456789.]", rev_no);
+ static char *rev_no = VERSION;
result = my_tcp_connect (haddr, hport, &sd);
recv (sd, output, BUFF_SZ, 0);
if (strncmp (output, "SSH", 3)) {
printf (_("Server answer: %s"), output);
+ close(sd);
exit (STATE_CRITICAL);
}
else {
ssh_proto = output + 4;
ssh_server = ssh_proto + strspn (ssh_proto, "-0123456789. ");
ssh_proto[strspn (ssh_proto, "0123456789. ")] = 0;
- printf
- (_("SSH OK - %s (protocol %s)\n"),
- ssh_server, ssh_proto);
+
asprintf (&buffer, "SSH-%s-check_ssh_%s\r\n", ssh_proto, rev_no);
send (sd, buffer, strlen (buffer), MSG_DONTWAIT);
if (verbose)
printf ("%s\n", buffer);
+
+ if (remote_version && strcmp(remote_version, ssh_server)) {
+ printf
+ (_("SSH WARNING - %s (protocol %s) version mismatch, expected '%s'\n"),
+ ssh_server, ssh_proto, remote_version);
+ close(sd);
+ exit (STATE_WARNING);
+ }
+
+ printf
+ (_("SSH OK - %s (protocol %s)\n"),
+ ssh_server, ssh_proto);
+ close(sd);
exit (STATE_OK);
}
}
+
+
void
print_help (void)
{
char *myport;
asprintf (&myport, "%d", SSH_DFL_PORT);
- print_revision (progname, revision);
+ print_revision (progname, NP_VERSION);
- printf (_("Copyright (c) 1999 Remi Paulmier <remi@sinfomic.fr>\n"));
- printf (_(COPYRIGHT), copyright, email);
+ printf ("Copyright (c) 1999 Remi Paulmier <remi@sinfomic.fr>\n");
+ printf (COPYRIGHT, copyright, email);
- printf (_("Try to connect to SSH server at specified server and port\n\n"));
+ printf ("%s\n", _("Try to connect to an SSH server at specified server and port"));
+
+ printf ("\n\n");
print_usage ();
- printf (_(UT_HELP_VRSN));
+ printf (UT_HELP_VRSN);
+ printf (UT_EXTRA_OPTS);
+
+ printf (UT_HOST_PORT, 'p', myport);
- printf (_(UT_HOST_PORT), 'p', myport);
+ printf (UT_IPv46);
- printf (_(UT_IPv46));
+ printf (UT_TIMEOUT, DEFAULT_SOCKET_TIMEOUT);
- printf (_(UT_TIMEOUT), DEFAULT_SOCKET_TIMEOUT);
+ printf (" %s\n", "-r, --remote-version=STRING");
+ printf (" %s\n", _("Warn if string doesn't match expected server version (ex: OpenSSH_3.9p1)"));
- printf (_(UT_VERBOSE));
+ printf (UT_VERBOSE);
- printf (_(UT_SUPPORT));
+#ifdef NP_EXTRA_OPTS
+ printf ("\n");
+ printf ("%s\n", _("Notes:"));
+ printf (UT_EXTRA_OPTS_NOTES);
+#endif
+
+ printf (UT_SUPPORT);
}
+
+
void
print_usage (void)
{
- printf (_("\
-Usage: %s [-46] [-t <timeout>] [-p <port>] <host>\n"), progname);
- printf (_(UT_HLP_VRS), progname, progname);
+ printf (_("Usage:"));
+ printf ("%s [-46] [-t <timeout>] [-r <remote version>] [-p <port>] <host>\n", progname);
}
-/* end of check_ssh.c */