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diff --git a/plugins/check_by_ssh.c b/plugins/check_by_ssh.c
index de106f229269a339766c2004f116c0bcfed86b3c..20ae62833a53e88ffc85baddbcad38d36861120d 100644 (file)
--- a/plugins/check_by_ssh.c
+++ b/plugins/check_by_ssh.c
/******************************************************************************
- *
- * This file is part of the Nagios Plugins.
- *
- * Copyright (c) 1999, 2000, 2001 Karl DeBisschop <karl@debisschop.net>
- *
- * The Nagios Plugins are free software; you can redistribute them
- * and/or modify them 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.
- *
- * $Id$
- *
+
+ The Nagios Plugins are free software; you can redistribute them
+ and/or modify them 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.
+
+ $Id$
+
*****************************************************************************/
const char *progname = "check_by_ssh";
const char *copyright = "2000-2003";
const char *email = "nagiosplug-devel@lists.sourceforge.net";
-#include "config.h"
#include "common.h"
#include "netutils.h"
#include "utils.h"
void print_help (void);
void print_usage (void);
-void
-print_help (void)
-{
- print_revision (progname, revision);
-
- printf (_(COPYRIGHT), copyright, email);
-
- printf (_("This plugin uses SSH to execute commands on a remote host\n\n"));
-
- print_usage ();
-
- printf (_(HELP_VRSN));
-
- printf (_(HOST_PORT), 'p', "none");
-
- printf (_(IPv46));
-
- printf (_("\
- -1, --proto1\n\
- tell ssh to use Protocol 1\n\
- -2, --proto2\n\
- tell ssh to use Protocol 2\n\
- -f\n\
- tells ssh to fork rather than create a tty\n"));
-
- printf (_("\
- -C, --command='COMMAND STRING'\n\
- command to execute on the remote machine\n\
- -l, --logname=USERNAME\n\
- SSH user name on remote host [optional]\n\
- -i, --identity=KEYFILE\n\
- identity of an authorized key [optional]\n\
- -O, --output=FILE\n\
- external command file for nagios [optional]\n\
- -s, --services=LIST\n\
- list of nagios service names, separated by ':' [optional]\n\
- -n, --name=NAME\n\
- short name of host in nagios configuration [optional]\n"));
-
- printf (_(WARN_CRIT_TO), DEFAULT_SOCKET_TIMEOUT);
-
- printf (_("\n\
-The most common mode of use is to refer to a local identity file with\n\
-the '-i' option. In this mode, the identity pair should have a null\n\
-passphrase and the public key should be listed in the authorized_keys\n\
-file of the remote host. Usually the key will be restricted to running\n\
-only one command on the remote server. If the remote SSH server tracks\n\
-invocation agruments, the one remote program may be an agent that can\n\
-execute additional commands as proxy\n"));
-
- printf (_("\n\
-To use passive mode, provide multiple '-C' options, and provide\n\
-all of -O, -s, and -n options (servicelist order must match '-C'\n\
-options)\n"));
-}
-
-
-
-
-
-void
-print_usage (void)
-{
- printf (_("Usage:\n\
-check_by_ssh [-f46] [-t timeout] [-i identity] [-l user] -H <host> -C <command>\n\
- [-n name] [-s servicelist] [-O outputfile] [-p port]\n\
-check_by_ssh -V prints version info\n\
-check_by_ssh -h prints more detailed help\n"));
-}
-\f
-
int commands = 0;
int services = 0;
-char *remotecmd = "";
-char *comm = SSH_COMMAND;
+int skip_lines = 0;
+char *remotecmd = NULL;
+char *comm = NULL;
char *hostname = NULL;
char *outputfile = NULL;
char *host_shortname = NULL;
int passive = FALSE;
int verbose = FALSE;
-
int
main (int argc, char **argv)
{
char input_buffer[MAX_INPUT_BUFFER];
- char *result_text = "";
+ char *result_text;
char *status_text;
- char *output = "";
+ char *output;
char *eol = NULL;
int cresult;
int result = STATE_UNKNOWN;
time_t local_time;
FILE *fp = NULL;
+ remotecmd = strdup ("");
+ comm = strdup (SSH_COMMAND);
+ result_text = strdup ("");
+
+ setlocale (LC_ALL, "");
+ bindtextdomain (PACKAGE, LOCALEDIR);
+ textdomain (PACKAGE);
/* process arguments */
- if (process_arguments (argc, argv) == ERROR)
- usage (_("Could not parse arguments\n"));
+ if (process_arguments (argc, argv) != TRUE)
+ usage (_("check_by_ssh: could not parse arguments\n"));
/* Set signal handling and alarm timeout */
if (signal (SIGALRM, popen_timeout_alarm_handler) == SIG_ERR) {
- printf ("Cannot catch SIGALRM");
+ printf (_("Cannot catch SIGALRM"));
return STATE_UNKNOWN;
}
alarm (timeout_interval);
child_process = spopen (comm);
if (child_process == NULL) {
- printf (_("Unable to open pipe: %s"), comm);
+ printf (_("Could not open pipe: %s\n"), comm);
return STATE_UNKNOWN;
}
}
- /* get results from remote command */
+ /* build up results from remote command in result_text */
while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_process))
asprintf (&result_text, "%s%s", result_text, input_buffer);
-
/* WARNING if output found on stderr */
- if (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_stderr)) {
- printf ("%s\n", input_buffer);
- return STATE_WARNING;
+ while (fgets (input_buffer, MAX_INPUT_BUFFER - 1, child_stderr)) {
+ if (skip_lines > 0) {
+ if (input_buffer[strlen(input_buffer)-1] == '\n') {
+ skip_lines--;
+ }
+ } else {
+ printf ("%s", input_buffer);
+ result = STATE_WARNING;
+ }
}
(void) fclose (child_stderr);
+ if (result == STATE_WARNING)
+ return result;
/* close the pipe */
exit (STATE_UNKNOWN);
}
- time (&local_time);
+ local_time = time (NULL);
commands = 0;
while (result_text && strlen(result_text) > 0) {
- status_text = strstr (result_text, _("STATUS CODE: "));
+ status_text = strstr (result_text, "STATUS CODE: ");
if (status_text == NULL) {
printf ("%s", result_text);
return result;
if (eol != NULL)
eol[0] = 0;
if (service[commands] && status_text
- && sscanf (status_text, _("STATUS CODE: %d"), &cresult) == 1) {
- fprintf (fp, _("[%d] PROCESS_SERVICE_CHECK_RESULT;%s;%s;%d;%s\n"),
+ && sscanf (status_text, "STATUS CODE: %d", &cresult) == 1) {
+ fprintf (fp, "[%d] PROCESS_SERVICE_CHECK_RESULT;%s;%s;%d;%s\n",
(int) local_time, host_shortname, service[commands++], cresult,
output);
}
}
+
/* print the first line from the remote command */
else {
eol = strpbrk (result_text, "\r\n");
printf ("%s\n", result_text);
}
- /* return error status from remote command */
+
+ /* return error status from remote command */
return result;
}
-
-
-
-
/* process command-line arguments */
int
process_arguments (int argc, char **argv)
int c;
char *p1, *p2;
- int option_index = 0;
- static struct option long_options[] = {
+ int option = 0;
+ static struct option longopts[] = {
{"version", no_argument, 0, 'V'},
{"help", no_argument, 0, 'h'},
{"verbose", no_argument, 0, 'v'},
{"user", required_argument, 0, 'u'},
{"logname", required_argument, 0, 'l'},
{"command", required_argument, 0, 'C'},
+ {"skip", required_argument, 0, 'S'},
{"proto1", no_argument, 0, '1'},
{"proto2", no_argument, 0, '2'},
{"use-ipv4", no_argument, 0, '4'},
strcpy (argv[c], "-t");
while (1) {
- c = getopt_long (argc, argv, "Vvh1246ft:H:O:p:i:u:l:C:n:s:", long_options,
- &option_index);
+ c = getopt_long (argc, argv, "Vvh1246ft:H:O:p:i:u:l:C:S:n:s:", longopts,
+ &option);
if (c == -1 || c == EOF)
break;
switch (c) {
case '?': /* help */
+ printf (_("%s: Unknown argument: %s\n\n"), progname, optarg);
print_usage ();
exit (STATE_UNKNOWN);
case 'V': /* version */
- print_revision (progname, "$Revision$");
+ print_revision (progname, revision);
exit (STATE_OK);
case 'h': /* help */
print_help ();
break;
case 't': /* timeout period */
if (!is_integer (optarg))
- usage2 (_("timeout interval must be an integer"), optarg);
- timeout_interval = atoi (optarg);
+ usage2 (_("Timeout interval must be a positive integer"), optarg);
+ else
+ timeout_interval = atoi (optarg);
break;
case 'H': /* host */
if (!is_host (optarg))
- usage2 (_("invalid host name"), optarg);
+ usage2 (_("Invalid hostname/address"), optarg);
hostname = optarg;
break;
case 'p': /* port number */
if (!is_integer (optarg))
- usage2 (_("port must be an integer"), optarg);
+ usage2 (_("Port must be a positive integer"), optarg);
asprintf (&comm,"%s -p %s", comm, optarg);
break;
case 'O': /* output file */
if (commands > 1)
asprintf (&remotecmd, "%s;echo STATUS CODE: $?;", remotecmd);
asprintf (&remotecmd, "%s%s", remotecmd, optarg);
+ break;
+ case 'S': /* Skip n lines in the output to ignore system banner */
+ if (!is_integer (optarg))
+ usage2 (_("skip lines must be an integer"), optarg);
+ else
+ skip_lines = atoi (optarg);
+ break;
}
}
c = optind;
if (hostname == NULL) {
if (c <= argc) {
- terminate (STATE_UNKNOWN, _("%s: You must provide a host name\n"), progname);
+ die (STATE_UNKNOWN, _("%s: You must provide a host name\n"), progname);
} else if (!is_host (argv[c]))
- terminate (STATE_UNKNOWN, _("%s: Invalid host name %s\n"), progname, argv[c]);
+ die (STATE_UNKNOWN, "%s: %s %s\n", progname, _("Invalid hostname/address"), argv[c]);
hostname = argv[c++];
}
}
if (commands > 1)
- remotecmd = strscat (remotecmd, ";echo STATUS CODE: $?;");
+ asprintf (&remotecmd, "%s;echo STATUS CODE: $?;", remotecmd);
if (remotecmd == NULL || strlen (remotecmd) <= 1)
usage (_("No remotecmd\n"));
-
-
int
validate_arguments (void)
{
return ERROR;
if (passive && commands != services)
- terminate (STATE_UNKNOWN, _("%s: In passive mode, you must provide a service name for each command.\n"), progname);
+ die (STATE_UNKNOWN, _("%s: In passive mode, you must provide a service name for each command.\n"), progname);
if (passive && host_shortname == NULL)
- terminate (STATE_UNKNOWN, _("%s: In passive mode, you must provide the host short name from the nagios configs.\n"), progname);
+ die (STATE_UNKNOWN, _("%s: In passive mode, you must provide the host short name from the nagios configs.\n"), progname);
return OK;
}
+
+
+void
+print_help (void)
+{
+ print_revision (progname, revision);
+
+ printf (_("Copyright (c) 1999 Karl DeBisschop <kdebisschop@users.sourceforge.net>\n"));
+ printf (_(COPYRIGHT), copyright, email);
+
+ printf (_("This plugin uses SSH to execute commands on a remote host\n\n"));
+
+ print_usage ();
+
+ printf (_(UT_HELP_VRSN));
+
+ printf (_(UT_HOST_PORT), 'p', "none");
+
+ printf (_(UT_IPv46));
+
+ printf (_("\
+ -1, --proto1\n\
+ tell ssh to use Protocol 1\n\
+ -2, --proto2\n\
+ tell ssh to use Protocol 2\n\
+ -S, --skiplines=n\n\
+ Ignore first n lines on STDERR (to suppress a logon banner)\n\
+ -f\n\
+ tells ssh to fork rather than create a tty\n"));
+
+ printf (_("\
+ -C, --command='COMMAND STRING'\n\
+ command to execute on the remote machine\n\
+ -l, --logname=USERNAME\n\
+ SSH user name on remote host [optional]\n\
+ -i, --identity=KEYFILE\n\
+ identity of an authorized key [optional]\n\
+ -O, --output=FILE\n\
+ external command file for nagios [optional]\n\
+ -s, --services=LIST\n\
+ list of nagios service names, separated by ':' [optional]\n\
+ -n, --name=NAME\n\
+ short name of host in nagios configuration [optional]\n"));
+
+ printf (_(UT_WARN_CRIT));
+
+ printf (_(UT_TIMEOUT), DEFAULT_SOCKET_TIMEOUT);
+
+ printf (_("\n\
+The most common mode of use is to refer to a local identity file with\n\
+the '-i' option. In this mode, the identity pair should have a null\n\
+passphrase and the public key should be listed in the authorized_keys\n\
+file of the remote host. Usually the key will be restricted to running\n\
+only one command on the remote server. If the remote SSH server tracks\n\
+invocation agruments, the one remote program may be an agent that can\n\
+execute additional commands as proxy\n"));
+
+ printf (_("\n\
+To use passive mode, provide multiple '-C' options, and provide\n\
+all of -O, -s, and -n options (servicelist order must match '-C'\n\
+options)\n"));
+
+ printf (_("\n\
+$ check_by_ssh -H localhost -n lh -s c1:c2:c3 \\\n\
+ -C uptime -C uptime -C uptime -O /tmp/foo\n\
+$ cat /tmp/foo\n\
+[1080933700] PROCESS_SERVICE_CHECK_RESULT;flint;c1;0; up 2 days...\n\
+[1080933700] PROCESS_SERVICE_CHECK_RESULT;flint;c2;0; up 2 days...\n\
+[1080933700] PROCESS_SERVICE_CHECK_RESULT;flint;c3;0; up 2 days...\n"));
+
+ printf (_(UT_SUPPORT));
+}
+
+
+
+void
+print_usage (void)
+{
+ printf (_("\n\
+Usage: %s [-f46] [-t timeout] [-i identity] [-l user] -H <host> \n\
+ -C <command> [-n name] [-s servicelist] [-O outputfile] [-p port]\n"),
+ progname);
+ printf (_(UT_HLP_VRS), progname, progname);
+}