Adding check_mysql_query, using new ranges and threshold checking

git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1309 f882894a-f735-0410-b71e-b25c423dba1c

1 files changed, 299 insertions, 0 deletions

diff --git a/plugins/check_mysql_query.c b/plugins/check_mysql_query.c
new file mode 100644
index 00000000..321af7aa
--- /dev/null
+++ b/plugins/check_mysql_query.c
@@ -0,0 +1,299 @@
+/******************************************************************************
+*
+* CHECK_MYSQL_QUERY.C
+*
+* Program: Mysql plugin for Nagios
+* License: GPL
+* Copyright (c) 2006 Nagios Plugins Team, after Didi Rieder (check_mysql)
+* 
+* $Id$
+*
+* Description:
+*  This plugin is for running arbitrary SQL and checking the results
+*
+******************************************************************************/
+
+const char *progname = "check_mysql_query";
+const char *revision = "$Revision$";
+const char *copyright = "2006";
+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);
+
+char *sql_query = NULL;
+int verbose = 0;
+thresholds *my_thresholds = NULL;
+
+
+int
+main (int argc, char **argv)
+{
+
+	MYSQL mysql;
+	MYSQL_RES *res;
+	MYSQL_ROW row;
+	
+	double value;
+	char *error = NULL;
+	int status;
+
+	setlocale (LC_ALL, "");
+	bindtextdomain (PACKAGE, LOCALEDIR);
+	textdomain (PACKAGE);
+
+	if (process_arguments (argc, argv) == ERROR)
+		usage4 (_("Could not parse arguments"));
+
+	/* initialize mysql  */
+	mysql_init (&mysql);
+
+	mysql_options(&mysql,MYSQL_READ_DEFAULT_GROUP,"client");
+
+	/* 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, "QUERY %s: %s\n", _("WARNING"), mysql_error (&mysql));
+		else if (mysql_errno (&mysql) == CR_VERSION_ERROR)
+			die (STATE_WARNING, "QUERY %s: %s\n", _("WARNING"), mysql_error (&mysql));
+		else if (mysql_errno (&mysql) == CR_OUT_OF_MEMORY)
+			die (STATE_WARNING, "QUERY %s: %s\n", _("WARNING"), mysql_error (&mysql));
+		else if (mysql_errno (&mysql) == CR_IPSOCK_ERROR)
+			die (STATE_WARNING, "QUERY %s: %s\n", _("WARNING"), mysql_error (&mysql));
+		else if (mysql_errno (&mysql) == CR_SOCKET_CREATE_ERROR)
+			die (STATE_WARNING, "QUERY %s: %s\n", _("WARNING"), mysql_error (&mysql));
+		else
+			die (STATE_CRITICAL, "QUERY %s: %s\n", _("CRITICAL"), mysql_error (&mysql));
+	}
+
+	if (mysql_query (&mysql, sql_query) != 0) {
+		error = strdup(mysql_error(&mysql));
+		mysql_close (&mysql);
+		die (STATE_CRITICAL, "QUERY %s: %s - %s\n", _("CRITICAL"), _("Error with query"), error);
+	}
+
+	/* store the result */
+	if ( (res = mysql_store_result (&mysql)) == NULL) {
+		error = strdup(mysql_error(&mysql));
+		mysql_close (&mysql);
+		die (STATE_CRITICAL, "QUERY %s: Error with store_result - %s\n", _("CRITICAL"), error);
+	}
+
+	/* Check there is some data */
+	if (mysql_num_rows(res) == 0) {
+		mysql_close(&mysql);
+		die (STATE_WARNING, "QUERY %s: %s\n", _("WARNING"), _("No rows returned"));
+	}
+
+	/* fetch the first row */
+	if ( (row = mysql_fetch_row (res)) == NULL) {
+		error = strdup(mysql_error(&mysql));
+		mysql_free_result (res);
+		mysql_close (&mysql);
+		die (STATE_CRITICAL, "QUERY %s: Fetch row error - %s\n", _("CRITICAL"), error);
+	}
+
+	/* free the result */
+	mysql_free_result (res);
+
+	/* close the connection */
+	mysql_close (&mysql);
+
+	if (! is_numeric(row[0])) {
+		die (STATE_CRITICAL, "QUERY %s: %s - '%s'\n", _("CRITICAL"), _("Is not a numeric"), row[0]);
+	}
+
+	value = strtod(row[0], NULL);
+
+	if (verbose >= 3)
+		printf("mysql result: %f\n", value);
+
+	status = get_status(value, my_thresholds);
+
+	if (status == STATE_OK) {
+		printf("QUERY %s: ", _("OK"));
+	} else if (status == STATE_WARNING) {
+		printf("QUERY %s: ", _("WARNING"));
+	} else if (status == STATE_CRITICAL) {
+		printf("QUERY %s: ", _("CRITICAL"));
+	}
+	printf(_("'%s' returned %f"), sql_query, value);
+	printf("\n");
+
+	return status;
+}
+
+
+/* process command-line arguments */
+int
+process_arguments (int argc, char **argv)
+{
+	int c;
+	char *warning = NULL;
+	char *critical = NULL;
+
+	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'},
+		{"query", required_argument, 0, 'q'},
+		{"warning", required_argument, 0, 'w'},
+		{"critical", required_argument, 0, 'c'},
+		{0, 0, 0, 0}
+	};
+
+	if (argc < 1)
+		return ERROR;
+
+	while (1) {
+		c = getopt_long (argc, argv, "hvVSP:p:u:d:H:q:w:c:", longopts, &option);
+
+		if (c == -1 || c == EOF)
+			break;
+
+		switch (c) {
+		case 'H':									/* hostname */
+			if (is_host (optarg)) {
+				db_host = optarg;
+			}
+			else {
+				usage2 (_("Invalid hostname/address"), optarg);
+			}
+			break;
+		case 'd':									/* hostname */
+			db = optarg;
+			break;
+		case 'u':									/* username */
+			db_user = optarg;
+			break;
+		case 'p':									/* authentication information: password */
+			asprintf(&db_pass, "%s", optarg);
+
+			/* Delete the password from process list */
+			while (*optarg != '\0') {
+				*optarg = 'X';
+				optarg++;
+			}
+			break;
+		case 'P':									/* critical time threshold */
+			db_port = atoi (optarg);
+			break;
+		case 'v':
+			verbose++;
+			break;
+		case 'V':									/* version */
+			print_revision (progname, revision);
+			exit (STATE_OK);
+		case 'h':									/* help */
+			print_help ();
+			exit (STATE_OK);
+		case 'q':
+			asprintf(&sql_query, "%s", optarg);
+			break;
+		case 'w':
+			warning = optarg;
+			break;
+		case 'c':
+			critical = optarg;
+			break;
+		case '?':									/* help */
+			usage2 (_("Unknown argument"), optarg);
+		}
+	}
+
+	c = optind;
+
+	set_thresholds(&my_thresholds, warning, critical);
+
+	return validate_arguments ();
+}
+
+
+int
+validate_arguments (void)
+{
+	if (sql_query == NULL)
+		usage("Must specify a SQL query to run");
+
+	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 ("%s\n", _("This program checks a query result against threshold levels"));
+
+	print_usage ();
+
+
+	printf (_(UT_HELP_VRSN));
+	printf (" -q, --query=STRING\n");
+	printf ("    %s\n", _("SQL query to run. Only first column in first row will be read"));
+	printf (_(UT_WARN_CRIT_RANGE));
+	printf (_(UT_HOST_PORT), 'P', myport);
+	printf (" -d, --database=STRING\n");
+	printf ("    %s\n", _("Database to check"));
+	printf (" -u, --username=STRING\n");
+	printf ("    %s\n", _("Username to login with"));
+	printf (" -p, --password=STRING\n");
+	printf ("    %s\n", _("Password to login with"));
+	printf ("    ==> %s <==\n", _("IMPORTANT: THIS FORM OF AUTHENTICATION IS NOT SECURE!!!"));
+
+	printf ("\n");
+
+	printf ("%s\n", _("A query is required. The result from the query should be numeric."));
+	printf ("%s\n", _("For extra security, create a user with minimal access."));
+
+	printf (_(UT_SUPPORT));
+}
+
+
+void
+print_usage (void)
+{
+	printf ("\
+Usage: %s -q SQL_query [-w warn] [-c crit]\n\
+      [-d database] [-H host] [-P port] [-u user] [-p password]\n",
+	        progname);
+}