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 0000000..321af7a
--- /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);
+}