1 /******************************************************************************
2 *
3 * CHECK_MYSQL.C
4 *
5 * Program: Mysql plugin for Nagios
6 * License: GPL
7 * Copyright (c) 1999 Didi Rieder (adrieder@sbox.tu-graz.ac.at)
8 * portions (c) 2000 Karl DeBisschop (kdebisschop@users.sourceforge.net)
9 *
10 * $Id$
11 *
12 * Description:
13 *
14 * This plugin is for testing a mysql server.
15 ******************************************************************************/
17 const char *progname = "check_mysql";
18 const char *revision = "$Revision$";
19 const char *copyright = "1999-2002";
20 const char *email = "nagiosplug-devel@lists.sourceforge.net";
22 #include "common.h"
23 #include "utils.h"
24 #include "netutils.h"
25 #include <mysql/mysql.h>
26 #include <mysql/errmsg.h>
28 char *db_user = NULL;
29 char *db_host = NULL;
30 char *db_pass = NULL;
31 char *db = NULL;
32 unsigned int db_port = MYSQL_PORT;
34 int process_arguments (int, char **);
35 int validate_arguments (void);
36 void print_help (void);
37 void print_usage (void);
39 int
40 main (int argc, char **argv)
41 {
43 MYSQL mysql;
44 char *result = NULL;
46 if (process_arguments (argc, argv) != OK)
47 usage (_("Invalid command arguments supplied\n"));
49 /* initialize mysql */
50 mysql_init (&mysql);
52 /* establish a connection to the server and error checking */
53 if (!mysql_real_connect(&mysql,db_host,db_user,db_pass,db,db_port,NULL,0)) {
54 if (mysql_errno (&mysql) == CR_UNKNOWN_HOST)
55 die (STATE_WARNING, "%s\n", mysql_error (&mysql));
56 else if (mysql_errno (&mysql) == CR_VERSION_ERROR)
57 die (STATE_WARNING, "%s\n", mysql_error (&mysql));
58 else if (mysql_errno (&mysql) == CR_OUT_OF_MEMORY)
59 die (STATE_WARNING, "%s\n", mysql_error (&mysql));
60 else if (mysql_errno (&mysql) == CR_IPSOCK_ERROR)
61 die (STATE_WARNING, "%s\n", mysql_error (&mysql));
62 else if (mysql_errno (&mysql) == CR_SOCKET_CREATE_ERROR)
63 die (STATE_WARNING, "%s\n", mysql_error (&mysql));
64 else
65 die (STATE_CRITICAL, "%s\n", mysql_error (&mysql));
66 }
68 /* get the server stats */
69 result = strdup (mysql_stat (&mysql));
71 /* error checking once more */
72 if (mysql_error (&mysql)) {
73 if (mysql_errno (&mysql) == CR_SERVER_GONE_ERROR)
74 die (STATE_CRITICAL, "%s\n", mysql_error (&mysql));
75 else if (mysql_errno (&mysql) == CR_SERVER_LOST)
76 die (STATE_CRITICAL, "%s\n", mysql_error (&mysql));
77 else if (mysql_errno (&mysql) == CR_UNKNOWN_ERROR)
78 die (STATE_CRITICAL, "%s\n", mysql_error (&mysql));
79 }
81 /* close the connection */
82 mysql_close (&mysql);
84 /* print out the result of stats */
85 printf ("%s\n", result);
87 return STATE_OK;
88 }
94 /* process command-line arguments */
95 int
96 process_arguments (int argc, char **argv)
97 {
98 int c;
100 int option = 0;
101 static struct option longopts[] = {
102 {"hostname", required_argument, 0, 'H'},
103 {"database", required_argument, 0, 'd'},
104 {"username", required_argument, 0, 'u'},
105 {"password", required_argument, 0, 'p'},
106 {"port", required_argument, 0, 'P'},
107 {"verbose", no_argument, 0, 'v'},
108 {"version", no_argument, 0, 'V'},
109 {"help", no_argument, 0, 'h'},
110 {0, 0, 0, 0}
111 };
113 if (argc < 1)
114 return ERROR;
116 while (1) {
117 c = getopt_long (argc, argv, "hVP:p:u:d:H:", longopts, &option);
119 if (c == -1 || c == EOF)
120 break;
122 switch (c) {
123 case 'H': /* hostname */
124 if (is_host (optarg)) {
125 db_host = optarg;
126 }
127 else {
128 usage (_("Invalid host name\n"));
129 }
130 break;
131 case 'd': /* hostname */
132 db = optarg;
133 break;
134 case 'u': /* username */
135 db_user = optarg;
136 break;
137 case 'p': /* authentication information: password */
138 db_pass = optarg;
139 break;
140 case 'P': /* critical time threshold */
141 db_port = atoi (optarg);
142 break;
143 case 'V': /* version */
144 print_revision (progname, revision);
145 exit (STATE_OK);
146 case 'h': /* help */
147 print_help ();
148 exit (STATE_OK);
149 case '?': /* help */
150 usage (_("Invalid argument\n"));
151 }
152 }
154 c = optind;
156 while ( argc > c ) {
158 if (strlen(db_host) == 0)
159 if (is_host (argv[c])) {
160 db_host = argv[c++];
161 }
162 else {
163 usage ("Invalid host name");
164 }
165 else if (strlen(db_user) == 0)
166 db_user = argv[c++];
167 else if (strlen(db_pass) == 0)
168 db_pass = argv[c++];
169 else if (strlen(db) == 0)
170 db = argv[c++];
171 else if (is_intnonneg (argv[c]))
172 db_port = atoi (argv[c++]);
173 else
174 break;
175 }
177 return validate_arguments ();
178 }
184 int
185 validate_arguments (void)
186 {
187 if (db_user == NULL)
188 db_user = strdup("");
190 if (db_host == NULL)
191 db_host = strdup("");
193 if (db_pass == NULL)
194 db_pass == strdup("");
196 if (db == NULL)
197 db = strdup("");
199 return OK;
200 }
206 \f
207 void
208 print_help (void)
209 {
210 char *myport;
211 asprintf (&myport, "%d", MYSQL_PORT);
213 print_revision (progname, revision);
215 printf (_(COPYRIGHT), copyright, email);
217 printf (_("This program tests connections to a mysql server\n"));
219 print_usage ();
221 printf (_(UT_HELP_VRSN));
223 printf (_(UT_HOST_PORT), 'P', myport);
225 printf (_("\
226 -d, --database=STRING\n\
227 Check database with indicated name\n\
228 -u, --username=STRING\n\
229 Connect using the indicated username\n\
230 -p, --password=STRING\n\
231 Use the indicated password to authenticate the connection\n\
232 ==> IMPORTANT: THIS FORM OF AUTHENTICATION IS NOT SECURE!!! <==\n\
233 Your clear-text password will be visible as a process table entry\n"));
235 printf (_("\n\
236 There are no required arguments. By default, the local database with\n\
237 a server listening on MySQL standard port %d will be checked\n"), MYSQL_PORT);
239 printf (_(UT_SUPPORT));
240 }
245 void
246 print_usage (void)
247 {
248 printf (_("\
249 Usage: %s [-d database] [-H host] [-P port] [-u user] [-p password]\n"),
250 progname);
251 printf (_(UT_HLP_VRS), progname, progname);
252 }