1 /***************************************************************************** *
2 * CHECK_LDAP.C
3 *
4 * Program: Ldap plugin for Nagios
5 * License: GPL
6 * Copyright (c) 1999 Didi Rieder (adrieder@sbox.tu-graz.ac.at)
7 *
8 * Last Modified: $Date$
9 *
10 * Command line: check_ldap -h <host> -b <base_dn> -p <port> -w <warn_time> -w <crit_time>
11 *
12 * Description:
13 *
14 * This plugin is for testing a ldap server.
15 *
16 * Modifications:
17 *
18 * 08-25-1999 Ethan Galstad (nagios@nagios.org)
19 * Modified to use common plugin include file
20 *
21 *****************************************************************************/
23 const char *progname = "check_ldap";
24 #define REVISION "$Revision$"
26 #include "config.h"
27 #include "common.h"
28 #include "netutils.h"
29 #include "utils.h"
31 #include <lber.h>
32 #include <ldap.h>
34 #define UNKNOWN -1
36 int process_arguments (int, char **);
37 int validate_arguments (void);
38 void print_help (void);
39 void print_usage (void);
41 char ld_defattr[] = "(objectclass=*)";
42 char *ld_attr = ld_defattr;
43 char *ld_host = NULL, *ld_base = NULL, *ld_passwd = NULL, *ld_binddn = NULL;
44 unsigned int ld_port = 389;
45 int warn_time = UNKNOWN, crit_time = UNKNOWN;
47 int
48 main (int argc, char *argv[])
49 {
51 LDAP *ld;
52 LDAPMessage *result;
54 int t_diff;
55 time_t time0, time1;
57 if (process_arguments (argc, argv) == ERROR)
58 usage ("check_ldap: could not parse arguments\n");
60 /* initialize alarm signal handling */
61 signal (SIGALRM, socket_timeout_alarm_handler);
63 /* set socket timeout */
64 alarm (socket_timeout);
66 /* get the start time */
67 time (&time0);
69 /* initialize ldap */
70 if (!(ld = ldap_open (ld_host, ld_port))) {
71 /*ldap_perror(ld, "ldap_open"); */
72 printf ("Could not connect to the server at port %i\n", ld_port);
73 return STATE_CRITICAL;
74 }
76 /* bind to the ldap server */
77 if (ldap_bind_s (ld, ld_binddn, ld_passwd, LDAP_AUTH_SIMPLE) !=
78 LDAP_SUCCESS) {
79 /*ldap_perror(ld, "ldap_bind"); */
80 printf ("Could not bind to the ldap-server\n");
81 return STATE_CRITICAL;
82 }
84 /* do a search of all objectclasses in the base dn */
85 if (ldap_search_s (ld, ld_base, LDAP_SCOPE_BASE, ld_attr, NULL, 0, &result)
86 != LDAP_SUCCESS) {
87 /*ldap_perror(ld, "ldap_search"); */
88 printf ("Could not search/find objectclasses in %s\n", ld_base);
89 return STATE_CRITICAL;
90 }
92 /* unbind from the ldap server */
93 ldap_unbind (ld);
95 /* reset the alarm handler */
96 alarm (0);
98 /* get the finish time */
99 time (&time1);
101 /* calcutate the elapsed time */
102 t_diff = time1 - time0;
104 /* check if warn_time or crit_time was exceeded */
105 if ((t_diff >= warn_time) && (t_diff < crit_time)) {
106 printf ("LDAP warning - %i seconds response time\n", t_diff);
107 return STATE_WARNING;
108 }
109 if (t_diff >= crit_time) {
110 printf ("LDAP critical - %i seconds response time\n", t_diff);
111 return STATE_CRITICAL;
112 }
114 /* print out the result */
115 printf ("LDAP ok - %i seconds response time\n", t_diff);
117 return STATE_OK;
118 }
120 /* process command-line arguments */
121 int
122 process_arguments (int argc, char **argv)
123 {
124 int c;
126 #ifdef HAVE_GETOPT_H
127 int option_index = 0;
128 /* initialize the long option struct */
129 static struct option longopts[] = {
130 {"help", no_argument, 0, 'h'},
131 {"version", no_argument, 0, 'V'},
132 {"timeout", required_argument, 0, 't'},
133 {"host", required_argument, 0, 'H'},
134 {"base", required_argument, 0, 'b'},
135 {"attr", required_argument, 0, 'a'},
136 {"bind", required_argument, 0, 'D'},
137 {"pass", required_argument, 0, 'P'},
138 {"port", required_argument, 0, 'p'},
139 {"warn", required_argument, 0, 'w'},
140 {"crit", required_argument, 0, 'c'},
141 {0, 0, 0, 0}
142 };
143 #endif
145 if (argc < 2)
146 return ERROR;
148 for (c = 1; c < argc; c++) {
149 if (strcmp ("-to", argv[c]) == 0)
150 strcpy (argv[c], "-t");
151 }
153 while (1) {
154 #ifdef HAVE_GETOPT_H
155 c = getopt_long (argc, argv, "hVt:c:w:H:b:p:a:D:P:", longopts, &option_index);
156 #else
157 c = getopt (argc, argv, "+?hVt:c:w:H:b:p:a:D:P:");
158 #endif
160 if (c == -1 || c == EOF)
161 break;
163 switch (c) {
164 case 'h': /* help */
165 print_help ();
166 exit (STATE_OK);
167 case 'V': /* version */
168 print_revision (progname, REVISION);
169 exit (STATE_OK);
170 case 't': /* timeout period */
171 if (!is_intnonneg (optarg))
172 usage2 ("timeout interval must be an integer", optarg);
173 socket_timeout = atoi (optarg);
174 break;
175 case 'H':
176 ld_host = optarg;
177 break;
178 case 'b':
179 ld_base = optarg;
180 break;
181 case 'p':
182 ld_port = atoi (optarg);
183 break;
184 case 'a':
185 ld_attr = optarg;
186 break;
187 case 'D':
188 ld_binddn = optarg;
189 break;
190 case 'P':
191 ld_passwd = optarg;
192 break;
193 case 'w':
194 warn_time = atoi (optarg);
195 break;
196 case 'c':
197 crit_time = atoi (optarg);
198 break;
199 default:
200 usage ("check_ldap: could not parse arguments\n");
201 break;
202 }
203 }
205 if (ld_host[0] == 0) {
206 asprintf (&ld_host, "%s", argv[c]);
207 }
209 return validate_arguments ();
210 }
212 int
213 validate_arguments ()
214 {
215 if (ld_host[0] == 0 ||
216 ld_base[0] == 0 ||
217 ld_port == UNKNOWN || warn_time == UNKNOWN || crit_time == UNKNOWN) {
218 return ERROR;
219 }
220 else {
221 return OK;
222 }
223 }
224 \f
227 /* function print_help */
228 void
229 print_help ()
230 {
231 print_revision (progname, REVISION);
232 printf
233 ("Copyright (c) 1999 Didi Rieder (adrieder@sbox.tu-graz.ac.at)\n"
234 "License: GPL\n" "\n");
235 print_usage ();
236 printf
237 ("\n"
238 "Options:\n"
239 "\t-H [--host] ... host\n"
240 "\t-a [--attr] ... ldap attribute to search (default: \"(objectclass=*)\"\n"
241 "\t-b [--base] ... ldap base (eg. ou=my unit, o=my org, c=at)\n"
242 "\t-D [--bind] ... ldap bind DN (if required)\n"
243 "\t-P [--pass] ... ldap password (if required)\n"
244 "\t-p [--port] ... ldap port (normaly 389)\n"
245 "\t-w [--warn] ... time in secs. - if the exceeds <warn> the STATE_WARNING will be returned\n"
246 "\t-c [--crit] ... time in secs. - if the exceeds <crit> the STATE_CRITICAL will be returned\n"
247 "\n");
248 }
251 void
252 print_usage ()
253 {
254 printf
255 ("Usage: %s -H <host> -b <base_dn> -p <port> [-a <attr>] [-D <binddn>]\n"
256 " [-P <password>] [-w <warn_time>] [-c <crit_time>] [-t timeout]\n"
257 "(Note: all times are in seconds.)\n", progname);
258 }