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/******************************************************************************
*
* CHECK_MYSQL.C
*
* Program: Mysql plugin for Nagios
* License: GPL
* Copyright (c) 1999 Didi Rieder (adrieder@sbox.tu-graz.ac.at)
* portions (c) 2000 Karl DeBisschop (kdebisschop@users.sourceforge.net)
*
* $Id$
*
* Description:
*
* This plugin is for testing a mysql server.
******************************************************************************/
const char *progname = "check_mysql";
const char *revision = "$Revision$";
const char *copyright = "1999-2002";
const char *email = "nagiosplug-devel@lists.sourceforge.net";
#include "common.h"
#include "utils.h"
#include "netutils.h"
#include <mysql/mysql.h>
#include <mysql/errmsg.h>
char *db_user = NULL;
char *db_host = NULL;
char *db_pass = NULL;
char *db = NULL;
unsigned int db_port = MYSQL_PORT;
int process_arguments (int, char **);
int validate_arguments (void);
void print_help (void);
void print_usage (void);
int
main (int argc, char **argv)
{
MYSQL mysql;
char *result = NULL;
setlocale (LC_ALL, "");
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
if (process_arguments (argc, argv) != OK)
usage (_("Invalid command arguments supplied\n"));
/* initialize mysql */
mysql_init (&mysql);
/* establish a connection to the server and error checking */
if (!mysql_real_connect(&mysql,db_host,db_user,db_pass,db,db_port,NULL,0)) {
if (mysql_errno (&mysql) == CR_UNKNOWN_HOST)
die (STATE_WARNING, "%s\n", mysql_error (&mysql));
else if (mysql_errno (&mysql) == CR_VERSION_ERROR)
die (STATE_WARNING, "%s\n", mysql_error (&mysql));
else if (mysql_errno (&mysql) == CR_OUT_OF_MEMORY)
die (STATE_WARNING, "%s\n", mysql_error (&mysql));
else if (mysql_errno (&mysql) == CR_IPSOCK_ERROR)
die (STATE_WARNING, "%s\n", mysql_error (&mysql));
else if (mysql_errno (&mysql) == CR_SOCKET_CREATE_ERROR)
die (STATE_WARNING, "%s\n", mysql_error (&mysql));
else
die (STATE_CRITICAL, "%s\n", mysql_error (&mysql));
}
/* get the server stats */
result = strdup (mysql_stat (&mysql));
/* error checking once more */
if (mysql_error (&mysql)) {
if (mysql_errno (&mysql) == CR_SERVER_GONE_ERROR)
die (STATE_CRITICAL, "%s\n", mysql_error (&mysql));
else if (mysql_errno (&mysql) == CR_SERVER_LOST)
die (STATE_CRITICAL, "%s\n", mysql_error (&mysql));
else if (mysql_errno (&mysql) == CR_UNKNOWN_ERROR)
die (STATE_CRITICAL, "%s\n", mysql_error (&mysql));
}
/* close the connection */
mysql_close (&mysql);
/* print out the result of stats */
printf ("%s\n", result);
return STATE_OK;
}
/* process command-line arguments */
int
process_arguments (int argc, char **argv)
{
int c;
int option = 0;
static struct option longopts[] = {
{"hostname", required_argument, 0, 'H'},
{"database", required_argument, 0, 'd'},
{"username", required_argument, 0, 'u'},
{"password", required_argument, 0, 'p'},
{"port", required_argument, 0, 'P'},
{"verbose", no_argument, 0, 'v'},
{"version", no_argument, 0, 'V'},
{"help", no_argument, 0, 'h'},
{0, 0, 0, 0}
};
if (argc < 1)
return ERROR;
while (1) {
c = getopt_long (argc, argv, "hVP:p:u:d:H:", longopts, &option);
if (c == -1 || c == EOF)
break;
switch (c) {
case 'H': /* hostname */
if (is_host (optarg)) {
db_host = optarg;
}
else {
usage (_("Invalid host name\n"));
}
break;
case 'd': /* hostname */
db = optarg;
break;
case 'u': /* username */
db_user = optarg;
break;
case 'p': /* authentication information: password */
db_pass = optarg;
break;
case 'P': /* critical time threshold */
db_port = atoi (optarg);
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"));
}
}
c = optind;
while ( argc > c ) {
if (strlen(db_host) == 0)
if (is_host (argv[c])) {
db_host = argv[c++];
}
else {
usage ("Invalid host name");
}
else if (strlen(db_user) == 0)
db_user = argv[c++];
else if (strlen(db_pass) == 0)
db_pass = argv[c++];
else if (strlen(db) == 0)
db = argv[c++];
else if (is_intnonneg (argv[c]))
db_port = atoi (argv[c++]);
else
break;
}
return validate_arguments ();
}
int
validate_arguments (void)
{
if (db_user == NULL)
db_user = strdup("");
if (db_host == NULL)
db_host = strdup("");
if (db_pass == NULL)
db_pass == strdup("");
if (db == NULL)
db = strdup("");
return OK;
}
void
print_help (void)
{
char *myport;
asprintf (&myport, "%d", MYSQL_PORT);
print_revision (progname, revision);
printf (_(COPYRIGHT), copyright, email);
printf (_("This program tests connections to a mysql server\n"));
print_usage ();
printf (_(UT_HELP_VRSN));
printf (_(UT_HOST_PORT), 'P', myport);
printf (_("\
-d, --database=STRING\n\
Check database with indicated name\n\
-u, --username=STRING\n\
Connect using the indicated username\n\
-p, --password=STRING\n\
Use the indicated password to authenticate the connection\n\
==> IMPORTANT: THIS FORM OF AUTHENTICATION IS NOT SECURE!!! <==\n\
Your clear-text password will be visible as a process table entry\n"));
printf (_("\n\
There are no required arguments. By default, the local database with\n\
a server listening on MySQL standard port %d will be checked\n"), MYSQL_PORT);
printf (_(UT_SUPPORT));
}
void
print_usage (void)
{
printf (_("\
Usage: %s [-d database] [-H host] [-P port] [-u user] [-p password]\n"),
progname);
printf (_(UT_HLP_VRS), progname, progname);
}
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