monitoring-plugins/plugins/check_ldap.c

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/******************************************************************************
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
******************************************************************************/
const char *progname = "check_ldap";
const char *revision = "$Revision$";
const char *copyright = "2000-2003";
const char *email = "nagiosplug-devel@lists.sourceforge.net";
#include "common.h"
#include "netutils.h"
#include "utils.h"
#include <lber.h>
#include <ldap.h>
enum {
UNDEFINED = 0,
#ifdef HAVE_LDAP_SET_OPTION
DEFAULT_PROTOCOL = 2,
#endif
DEFAULT_PORT = 389
};
int process_arguments (int, char **);
int validate_arguments (void);
void print_help (void);
void print_usage (void);
char ld_defattr[] = "(objectclass=*)";
char *ld_attr = ld_defattr;
char *ld_host = NULL;
char *ld_base = NULL;
char *ld_passwd = NULL;
char *ld_binddn = NULL;
int ld_port = DEFAULT_PORT;
#ifdef HAVE_LDAP_SET_OPTION
int ld_protocol = DEFAULT_PROTOCOL;
#endif
int warn_time = UNDEFINED;
int crit_time = UNDEFINED;
struct timeval tv;
int
main (int argc, char *argv[])
{
LDAP *ld;
LDAPMessage *result;
int status;
long microsec;
double elapsed_time;
setlocale (LC_ALL, "");
bindtextdomain (PACKAGE, LOCALEDIR);
textdomain (PACKAGE);
if (process_arguments (argc, argv) == ERROR)
usage (_("check_ldap: could not parse arguments\n"));
/* initialize alarm signal handling */
signal (SIGALRM, socket_timeout_alarm_handler);
/* set socket timeout */
alarm (socket_timeout);
/* get the start time */
gettimeofday (&tv, NULL);
/* initialize ldap */
if (!(ld = ldap_open (ld_host, ld_port))) {
/*ldap_perror(ld, "ldap_open"); */
printf (_("Could not connect to the server at port %i\n"), ld_port);
return STATE_CRITICAL;
}
#ifdef HAVE_LDAP_SET_OPTION
/* set ldap options */
if (ldap_set_option (ld, LDAP_OPT_PROTOCOL_VERSION, &ld_protocol) !=
LDAP_OPT_SUCCESS ) {
printf(_("Could not set protocol version %d\n"), ld_protocol);
return STATE_CRITICAL;
}
#endif
/* bind to the ldap server */
if (ldap_bind_s (ld, ld_binddn, ld_passwd, LDAP_AUTH_SIMPLE) !=
LDAP_SUCCESS) {
/*ldap_perror(ld, "ldap_bind"); */
printf (_("Could not bind to the ldap-server\n"));
return STATE_CRITICAL;
}
/* do a search of all objectclasses in the base dn */
if (ldap_search_s (ld, ld_base, LDAP_SCOPE_BASE, ld_attr, NULL, 0, &result)
!= LDAP_SUCCESS) {
/*ldap_perror(ld, "ldap_search"); */
printf (_("Could not search/find objectclasses in %s\n"), ld_base);
return STATE_CRITICAL;
}
/* unbind from the ldap server */
ldap_unbind (ld);
/* reset the alarm handler */
alarm (0);
/* calcutate the elapsed time and compare to thresholds */
microsec = deltime (tv);
elapsed_time = (double)microsec / 1.0e6;
if (crit_time!=UNDEFINED && elapsed_time>crit_time)
status = STATE_CRITICAL;
else if (warn_time!=UNDEFINED && elapsed_time>warn_time)
status = STATE_WARNING;
else
status = STATE_OK;
/* print out the result */
printf (_("LDAP %s - %.3f seconds response time|%s\n"),
state_text (status),
elapsed_time,
perfdata ("time", microsec, "us",
warn_time, warn_time,
crit_time, crit_time,
TRUE, 0, FALSE, 0));
return status;
}
/* process command-line arguments */
int
process_arguments (int argc, char **argv)
{
int c;
int option = 0;
/* initialize the long option struct */
static struct option longopts[] = {
{"help", no_argument, 0, 'h'},
{"version", no_argument, 0, 'V'},
{"timeout", required_argument, 0, 't'},
{"host", required_argument, 0, 'H'},
{"base", required_argument, 0, 'b'},
{"attr", required_argument, 0, 'a'},
{"bind", required_argument, 0, 'D'},
{"pass", required_argument, 0, 'P'},
#ifdef HAVE_LDAP_SET_OPTION
{"ver2", no_argument, 0, '2'},
{"ver3", no_argument, 0, '3'},
#endif
{"use-ipv4", no_argument, 0, '4'},
{"use-ipv6", no_argument, 0, '6'},
{"port", required_argument, 0, 'p'},
{"warn", required_argument, 0, 'w'},
{"crit", required_argument, 0, 'c'},
{0, 0, 0, 0}
};
if (argc < 2)
return ERROR;
for (c = 1; c < argc; c++) {
if (strcmp ("-to", argv[c]) == 0)
strcpy (argv[c], "-t");
}
while (1) {
c = getopt_long (argc, argv, "hV2346t:c:w:H:b:p:a:D:P:", longopts, &option);
if (c == -1 || c == EOF)
break;
switch (c) {
case 'h': /* help */
print_help ();
exit (STATE_OK);
case 'V': /* version */
print_revision (progname, revision);
exit (STATE_OK);
case 't': /* timeout period */
if (!is_intnonneg (optarg))
usage2 (_("timeout interval must be a positive integer"), optarg);
else
socket_timeout = atoi (optarg);
break;
case 'H':
ld_host = optarg;
break;
case 'b':
ld_base = optarg;
break;
case 'p':
ld_port = atoi (optarg);
break;
case 'a':
ld_attr = optarg;
break;
case 'D':
ld_binddn = optarg;
break;
case 'P':
ld_passwd = optarg;
break;
case 'w':
warn_time = atoi (optarg);
break;
case 'c':
crit_time = atoi (optarg);
break;
#ifdef HAVE_LDAP_SET_OPTION
case '2':
ld_protocol = 2;
break;
case '3':
ld_protocol = 3;
break;
#endif
case '4':
address_family = AF_INET;
break;
case '6':
#ifdef USE_IPV6
address_family = AF_INET6;
#else
usage (_("IPv6 support not available\n"));
#endif
break;
default:
usage (_("check_ldap: could not parse unknown arguments\n"));
break;
}
}
c = optind;
if (ld_host == NULL && is_host(argv[c]))
ld_host = strdup (argv[c++]);
if (ld_base == NULL && argv[c])
ld_base = strdup (argv[c++]);
return validate_arguments ();
}
int
validate_arguments ()
{
if (ld_host==NULL || strlen(ld_host)==0)
usage (_("please specify the host name\n"));
if (ld_base==NULL || strlen(ld_base)==0)
usage (_("please specify the LDAP base\n"));
return OK;
}
void
print_help (void)
{
char *myport;
asprintf (&myport, "%d", DEFAULT_PORT);
print_revision (progname, revision);
printf (_("Copyright (c) 1999 Didi Rieder (adrieder@sbox.tu-graz.ac.at)\n"));
printf (_(COPYRIGHT), copyright, email);
print_usage ();
printf (_(UT_HELP_VRSN));
printf (_(UT_HOST_PORT), 'p', myport);
printf (_(UT_IPv46));
printf (_("\
-a [--attr]\n\
ldap attribute to search (default: \"(objectclass=*)\"\n\
-b [--base]\n\
ldap base (eg. ou=my unit, o=my org, c=at)\n\
-D [--bind]\n\
ldap bind DN (if required)\n\
-P [--pass]\n\
ldap password (if required)\n"));
#ifdef HAVE_LDAP_SET_OPTION
printf (_("\
-2 [--ver2]\n\
use ldap protocol version 2\n\
-3 [--ver3]\n\
use ldap protocol version 3\n\
(default protocol version: %d)\n"),
DEFAULT_PROTOCOL);
#endif
printf (_(UT_WARN_CRIT));
printf (_(UT_TIMEOUT), DEFAULT_SOCKET_TIMEOUT);
printf (_(UT_VERBOSE));
printf (_(UT_SUPPORT));
}
void
print_usage (void)
{
printf (_("\
Usage: %s -H <host> -b <base_dn> [-p <port>] [-a <attr>] [-D <binddn>]\n\
[-P <password>] [-w <warn_time>] [-c <crit_time>] [-t timeout]%s\n\
(Note: all times are in seconds.)\n"),
progname, (HAVE_LDAP_SET_OPTION ? "[-2|-3] [-4|-6]" : ""));
printf (_(UT_HLP_VRS), progname, progname);
}