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 #define REVISION "$Revision$"
19 #define COPYRIGHT "1999-2002"
21 #include "common.h"
22 #include "utils.h"
24 #include <mysql/mysql.h>
25 #include <mysql/errmsg.h>
27 char *db_user = "";
28 char *db_host = "";
29 char *db_pass = "";
30 char *db = "";
31 unsigned int db_port = MYSQL_PORT;
33 int process_arguments (int, char **);
34 int validate_arguments (void);
35 void print_help (void);
36 void print_usage (void);
38 int
39 main (int argc, char **argv)
40 {
42 MYSQL mysql;
43 char result[1024];
45 if (process_arguments (argc, argv) != OK)
46 usage ("Invalid command arguments supplied\n");
48 /* initialize mysql */
49 mysql_init (&mysql);
51 /* establish a connection to the server and error checking */
52 if (!mysql_real_connect
53 (&mysql, db_host, db_user, db_pass, db, db_port, NULL, 0)) {
55 if (mysql_errno (&mysql) == CR_UNKNOWN_HOST) {
56 printf ("%s\n", mysql_error (&mysql));
57 return STATE_WARNING;
59 }
60 else if (mysql_errno (&mysql) == CR_VERSION_ERROR) {
61 printf ("%s\n", mysql_error (&mysql));
62 return STATE_WARNING;
64 }
65 else if (mysql_errno (&mysql) == CR_OUT_OF_MEMORY) {
66 printf ("%s\n", mysql_error (&mysql));
67 return STATE_WARNING;
69 }
70 else if (mysql_errno (&mysql) == CR_IPSOCK_ERROR) {
71 printf ("%s\n", mysql_error (&mysql));
72 return STATE_WARNING;
74 }
75 else if (mysql_errno (&mysql) == CR_SOCKET_CREATE_ERROR) {
76 printf ("%s\n", mysql_error (&mysql));
77 return STATE_WARNING;
79 }
80 else {
81 printf ("%s\n", mysql_error (&mysql));
82 return STATE_CRITICAL;
83 }
85 }
87 /* get the server stats */
88 sprintf (result, mysql_stat (&mysql));
90 /* error checking once more */
91 if (mysql_error (&mysql)) {
93 if (mysql_errno (&mysql) == CR_SERVER_GONE_ERROR) {
94 printf ("%s\n", mysql_error (&mysql));
95 return STATE_CRITICAL;
97 }
98 else if (mysql_errno (&mysql) == CR_SERVER_LOST) {
99 printf ("%s\n", mysql_error (&mysql));
100 return STATE_CRITICAL;
102 }
103 else if (mysql_errno (&mysql) == CR_UNKNOWN_ERROR) {
104 printf ("%s\n", mysql_error (&mysql));
105 return STATE_UNKNOWN;
106 }
108 }
110 /* close the connection */
111 mysql_close (&mysql);
113 /* print out the result of stats */
114 printf ("%s\n", result);
116 return STATE_OK;
117 }
123 /* process command-line arguments */
124 int
125 process_arguments (int argc, char **argv)
126 {
127 int c;
129 #ifdef HAVE_GETOPT_H
130 int option_index = 0;
131 static struct option long_options[] = {
132 {"hostname", required_argument, 0, 'H'},
133 {"database", required_argument, 0, 'd'},
134 {"username", required_argument, 0, 'u'},
135 {"password", required_argument, 0, 'p'},
136 {"port", required_argument, 0, 'P'},
137 {"verbose", no_argument, 0, 'v'},
138 {"version", no_argument, 0, 'V'},
139 {"help", no_argument, 0, 'h'},
140 {0, 0, 0, 0}
141 };
142 #endif
144 if (argc < 1)
145 return ERROR;
147 while (1) {
148 #ifdef HAVE_GETOPT_H
149 c =
150 getopt_long (argc, argv, "hVP:p:u:d:H:", long_options, &option_index);
151 #else
152 c = getopt (argc, argv, "hVP:p:u:d:H:");
153 #endif
155 if (c == -1 || c == EOF)
156 break;
158 switch (c) {
159 case 'H': /* hostname */
160 if (is_host (optarg)) {
161 db_host = optarg;
162 }
163 else {
164 usage ("Invalid host name\n");
165 }
166 break;
167 case 'd': /* hostname */
168 db = optarg;
169 break;
170 case 'u': /* username */
171 db_user = optarg;
172 break;
173 case 'p': /* authentication information: password */
174 db_pass = optarg;
175 break;
176 case 'P': /* critical time threshold */
177 db_port = atoi (optarg);
178 break;
179 case 'V': /* version */
180 print_revision (progname, REVISION);
181 exit (STATE_OK);
182 case 'h': /* help */
183 print_help ();
184 exit (STATE_OK);
185 case '?': /* help */
186 usage ("Invalid argument\n");
187 }
188 }
190 c = optind;
192 if (strlen(db_host) == 0 && argc > c)
193 if (is_host (argv[c])) {
194 db_host = argv[c++];
195 }
196 else {
197 usage ("Invalid host name");
198 }
200 if (strlen(db_user) == 0 && argc > c)
201 db_user = argv[c++];
203 if (strlen(db_pass) == 0 && argc > c)
204 db_pass = argv[c++];
206 if (strlen(db) == 0 && argc > c)
207 db = argv[c++];
209 if (is_intnonneg (argv[c]) && argc > c)
210 db_port = atoi (argv[c++]);
212 return validate_arguments ();
213 }
219 int
220 validate_arguments (void)
221 {
222 return OK;
223 }
229 void
230 print_help (void)
231 {
232 print_revision (progname, REVISION);
233 printf
234 ("Copyright (c) 2000 Didi Rieder/Karl DeBisschop\n\n"
235 "This plugin is for testing a mysql server.\n");
236 print_usage ();
237 printf
238 ("\nThere are no required arguments. By default, the local database with\n"
239 "a server listening on MySQL standard port %d will be checked\n\n"
240 "Options:\n"
241 " -d, --database=STRING\n"
242 " Check database with indicated name\n"
243 " -H, --hostname=STRING or IPADDRESS\n"
244 " Check server on the indicated host\n"
245 " -P, --port=INTEGER\n"
246 " Make connection on the indicated port\n"
247 " -u, --username=STRING\n"
248 " Connect using the indicated username\n"
249 " -p, --password=STRING\n"
250 " Use the indicated password to authenticate the connection\n"
251 " ==> IMPORTANT: THIS FORM OF AUTHENTICATION IS NOT SECURE!!! <==\n"
252 " Your clear-text password will be visible as a process table entry\n"
253 " -h, --help\n"
254 " Print detailed help screen\n"
255 " -V, --version\n" " Print version information\n\n", MYSQL_PORT);
256 support ();
257 }
263 void
264 print_usage (void)
265 {
266 printf
267 ("Usage: %s [-d database] [-H host] [-P port] [-u user] [-p password]\n"
268 " %s --help\n"
269 " %s --version\n", progname, progname, progname);
270 }