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-rw-r--r--plugins/check_radius.c416
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diff --git a/plugins/check_radius.c b/plugins/check_radius.c
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+++ b/plugins/check_radius.c
@@ -0,0 +1,416 @@
+/*****************************************************************************
+*
+* Monitoring check_radius plugin
+*
+* License: GPL
+* Copyright (c) 1999-2008 Monitoring Plugins Development Team
+*
+* Description:
+*
+* This file contains the check_radius plugin
+*
+* Tests to see if a radius server is accepting connections.
+*
+*
+* 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 3 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, see <http://www.gnu.org/licenses/>.
+*
+*
+*****************************************************************************/
+
+const char *progname = "check_radius";
+const char *copyright = "2000-2008";
+const char *email = "devel@monitoring-plugins.org";
+
+#include "common.h"
+#include "utils.h"
+#include "netutils.h"
+
+#if defined(HAVE_LIBRADCLI)
+#include <radcli/radcli.h>
+#elif defined(HAVE_LIBFREERADIUS_CLIENT)
+#include <freeradius-client.h>
+#elif defined(HAVE_LIBRADIUSCLIENT_NG)
+#include <radiusclient-ng.h>
+#else
+#include <radiusclient.h>
+#endif
+
+int process_arguments (int, char **);
+void print_help (void);
+void print_usage (void);
+
+#if defined(HAVE_LIBFREERADIUS_CLIENT) || defined(HAVE_LIBRADIUSCLIENT_NG) || defined(HAVE_LIBRADCLI)
+#define my_rc_conf_str(a) rc_conf_str(rch,a)
+#if defined(HAVE_LIBRADCLI)
+#define my_rc_send_server(a,b) rc_send_server(rch,a,b,AUTH)
+#else
+#define my_rc_send_server(a,b) rc_send_server(rch,a,b)
+#endif
+#if defined(HAVE_LIBFREERADIUS_CLIENT) || defined(HAVE_LIBRADCLI)
+#define my_rc_buildreq(a,b,c,d,e,f) rc_buildreq(rch,a,b,c,d,(a)->secret,e,f)
+#else
+#define my_rc_buildreq(a,b,c,d,e,f) rc_buildreq(rch,a,b,c,d,e,f)
+#endif
+#define my_rc_avpair_add(a,b,c,d) rc_avpair_add(rch,a,b,c,-1,d)
+#define my_rc_read_dictionary(a) rc_read_dictionary(rch, a)
+#else
+#define my_rc_conf_str(a) rc_conf_str(a)
+#define my_rc_send_server(a,b) rc_send_server(a, b)
+#define my_rc_buildreq(a,b,c,d,e,f) rc_buildreq(a,b,c,d,e,f)
+#define my_rc_avpair_add(a,b,c,d) rc_avpair_add(a, b, c, d)
+#define my_rc_read_dictionary(a) rc_read_dictionary(a)
+#endif
+
+/* REJECT_RC is only defined in some version of radiusclient. It has
+ * been reported from radiusclient-ng 0.5.6 on FreeBSD 7.2-RELEASE */
+#ifndef REJECT_RC
+#define REJECT_RC BADRESP_RC
+#endif
+
+int my_rc_read_config(char *);
+
+#if defined(HAVE_LIBFREERADIUS_CLIENT) || defined(HAVE_LIBRADIUSCLIENT_NG) || defined(HAVE_LIBRADCLI)
+rc_handle *rch = NULL;
+#endif
+
+char *server = NULL;
+char *username = NULL;
+char *password = NULL;
+char *nasid = NULL;
+char *nasipaddress = NULL;
+char *expect = NULL;
+char *config_file = NULL;
+unsigned short port = PW_AUTH_UDP_PORT;
+int retries = 1;
+int verbose = FALSE;
+
+/******************************************************************************
+
+The (pseudo?)literate programming XML is contained within \@\@\- <XML> \-\@\@
+tags in the comments. With in the tags, the XML is assembled sequentially.
+You can define entities in tags. You also have all the #defines available as
+entities.
+
+Please note that all tags must be lowercase to use the DocBook XML DTD.
+
+@@-<article>
+
+<sect1>
+<title>Quick Reference</title>
+<!-- The refentry forms a manpage -->
+<refentry>
+<refmeta>
+<manvolnum>5<manvolnum>
+</refmeta>
+<refnamdiv>
+<refname>&progname;</refname>
+<refpurpose>&SUMMARY;</refpurpose>
+</refnamdiv>
+</refentry>
+</sect1>
+
+<sect1>
+<title>FAQ</title>
+</sect1>
+
+<sect1>
+<title>Theory, Installation, and Operation</title>
+
+<sect2>
+<title>General Description</title>
+<para>
+&DESCRIPTION;
+</para>
+</sect2>
+
+<sect2>
+<title>Future Enhancements</title>
+<para>Todo List</para>
+<itemizedlist>
+<listitem>Add option to get password from a secured file rather than the command line</listitem>
+</itemizedlist>
+</sect2>
+
+
+<sect2>
+<title>Functions</title>
+-@@
+******************************************************************************/
+
+
+
+int
+main (int argc, char **argv)
+{
+ struct sockaddr_storage ss;
+ char name[HOST_NAME_MAX];
+#ifdef RC_BUFFER_LEN
+ char msg[RC_BUFFER_LEN];
+#else
+ char msg[BUFFER_LEN];
+#endif
+ SEND_DATA data;
+ int result = STATE_UNKNOWN;
+ uint32_t client_id, service;
+ char *str;
+
+ setlocale (LC_ALL, "");
+ bindtextdomain (PACKAGE, LOCALEDIR);
+ textdomain (PACKAGE);
+
+ /* Parse extra opts if any */
+ argv=np_extra_opts (&argc, argv, progname);
+
+ if (process_arguments (argc, argv) == ERROR)
+ usage4 (_("Could not parse arguments"));
+
+ str = strdup ("dictionary");
+ if ((config_file && my_rc_read_config (config_file)) ||
+ my_rc_read_dictionary (my_rc_conf_str (str)))
+ die (STATE_UNKNOWN, _("Config file error\n"));
+
+ service = PW_AUTHENTICATE_ONLY;
+
+ memset (&data, 0, sizeof(data));
+ if (!(my_rc_avpair_add (&data.send_pairs, PW_SERVICE_TYPE, &service, 0) &&
+ my_rc_avpair_add (&data.send_pairs, PW_USER_NAME, username, 0) &&
+ my_rc_avpair_add (&data.send_pairs, PW_USER_PASSWORD, password, 0)
+ ))
+ die (STATE_UNKNOWN, _("Out of Memory?\n"));
+
+ if (nasid != NULL) {
+ if (!(my_rc_avpair_add (&data.send_pairs, PW_NAS_IDENTIFIER, nasid, 0)))
+ die (STATE_UNKNOWN, _("Invalid NAS-Identifier\n"));
+ }
+
+ if (nasipaddress == NULL) {
+ if (gethostname (name, sizeof(name)) != 0)
+ die (STATE_UNKNOWN, _("gethostname() failed!\n"));
+ nasipaddress = name;
+ }
+ if (!dns_lookup (nasipaddress, &ss, AF_INET)) /* TODO: Support IPv6. */
+ die (STATE_UNKNOWN, _("Invalid NAS-IP-Address\n"));
+ client_id = ntohl (((struct sockaddr_in *)&ss)->sin_addr.s_addr);
+ if (my_rc_avpair_add (&(data.send_pairs), PW_NAS_IP_ADDRESS, &client_id, 0) == NULL)
+ die (STATE_UNKNOWN, _("Invalid NAS-IP-Address\n"));
+
+ my_rc_buildreq (&data, PW_ACCESS_REQUEST, server, port, (int)timeout_interval,
+ retries);
+
+ result = my_rc_send_server (&data, msg);
+ rc_avpair_free (data.send_pairs);
+ if (data.receive_pairs)
+ rc_avpair_free (data.receive_pairs);
+
+ if (result == TIMEOUT_RC)
+ die (STATE_CRITICAL, _("Timeout\n"));
+ if (result == ERROR_RC)
+ die (STATE_CRITICAL, _("Auth Error\n"));
+ if (result == REJECT_RC)
+ die (STATE_WARNING, _("Auth Failed\n"));
+ if (result == BADRESP_RC)
+ die (STATE_WARNING, _("Bad Response\n"));
+ if (expect && !strstr (msg, expect))
+ die (STATE_WARNING, "%s\n", msg);
+ if (result == OK_RC)
+ die (STATE_OK, _("Auth OK\n"));
+ (void)snprintf(msg, sizeof(msg), _("Unexpected result code %d"), result);
+ die (STATE_UNKNOWN, "%s\n", msg);
+}
+
+
+
+/* process command-line arguments */
+int
+process_arguments (int argc, char **argv)
+{
+ int c;
+
+ int option = 0;
+ static struct option longopts[] = {
+ {"hostname", required_argument, 0, 'H'},
+ {"port", required_argument, 0, 'P'},
+ {"username", required_argument, 0, 'u'},
+ {"password", required_argument, 0, 'p'},
+ {"nas-id", required_argument, 0, 'n'},
+ {"nas-ip-address", required_argument, 0, 'N'},
+ {"filename", required_argument, 0, 'F'},
+ {"expect", required_argument, 0, 'e'},
+ {"retries", required_argument, 0, 'r'},
+ {"timeout", required_argument, 0, 't'},
+ {"verbose", no_argument, 0, 'v'},
+ {"version", no_argument, 0, 'V'},
+ {"help", no_argument, 0, 'h'},
+ {0, 0, 0, 0}
+ };
+
+ while (1) {
+ c = getopt_long (argc, argv, "+hVvH:P:F:u:p:n:N:t:r:e:", longopts,
+ &option);
+
+ if (c == -1 || c == EOF || c == 1)
+ break;
+
+ switch (c) {
+ case '?': /* print short usage statement if args not parsable */
+ usage5 ();
+ case 'h': /* help */
+ print_help ();
+ exit (STATE_UNKNOWN);
+ case 'V': /* version */
+ print_revision (progname, NP_VERSION);
+ exit (STATE_UNKNOWN);
+ case 'v': /* verbose mode */
+ verbose = TRUE;
+ break;
+ case 'H': /* hostname */
+ if (is_host (optarg) == FALSE) {
+ usage2 (_("Invalid hostname/address"), optarg);
+ }
+ server = optarg;
+ break;
+ case 'P': /* port */
+ if (is_intnonneg (optarg))
+ port = (unsigned short)atoi (optarg);
+ else
+ usage4 (_("Port must be a positive integer"));
+ break;
+ case 'u': /* username */
+ username = optarg;
+ break;
+ case 'p': /* password */
+ password = strdup(optarg);
+
+ /* Delete the password from process list */
+ while (*optarg != '\0') {
+ *optarg = 'X';
+ optarg++;
+ }
+ break;
+ case 'n': /* nas id */
+ nasid = optarg;
+ break;
+ case 'N': /* nas ip address */
+ nasipaddress = optarg;
+ break;
+ case 'F': /* configuration file */
+ config_file = optarg;
+ break;
+ case 'e': /* expect */
+ expect = optarg;
+ break;
+ case 'r': /* retries */
+ if (is_intpos (optarg))
+ retries = atoi (optarg);
+ else
+ usage4 (_("Number of retries must be a positive integer"));
+ break;
+ case 't': /* timeout */
+ if (is_intpos (optarg))
+ timeout_interval = (unsigned)atoi (optarg);
+ else
+ usage2 (_("Timeout interval must be a positive integer"), optarg);
+ break;
+ }
+ }
+
+ if (server == NULL)
+ usage4 (_("Hostname was not supplied"));
+ if (username == NULL)
+ usage4 (_("User not specified"));
+ if (password == NULL)
+ usage4 (_("Password not specified"));
+ if (config_file == NULL)
+ usage4 (_("Configuration file not specified"));
+
+ return OK;
+}
+
+
+
+void
+print_help (void)
+{
+ char *myport;
+ xasprintf (&myport, "%d", PW_AUTH_UDP_PORT);
+
+ print_revision (progname, NP_VERSION);
+
+ printf ("Copyright (c) 1999 Robert August Vincent II\n");
+ printf (COPYRIGHT, copyright, email);
+
+ printf("%s\n", _("Tests to see if a RADIUS server is accepting connections."));
+
+ printf ("\n\n");
+
+ print_usage ();
+
+ printf (UT_HELP_VRSN);
+ printf (UT_EXTRA_OPTS);
+
+ printf (UT_HOST_PORT, 'P', myport);
+
+ printf (" %s\n", "-u, --username=STRING");
+ printf (" %s\n", _("The user to authenticate"));
+ printf (" %s\n", "-p, --password=STRING");
+ printf (" %s\n", _("Password for authentication (SECURITY RISK)"));
+ printf (" %s\n", "-n, --nas-id=STRING");
+ printf (" %s\n", _("NAS identifier"));
+ printf (" %s\n", "-N, --nas-ip-address=STRING");
+ printf (" %s\n", _("NAS IP Address"));
+ printf (" %s\n", "-F, --filename=STRING");
+ printf (" %s\n", _("Configuration file"));
+ printf (" %s\n", "-e, --expect=STRING");
+ printf (" %s\n", _("Response string to expect from the server"));
+ printf (" %s\n", "-r, --retries=INTEGER");
+ printf (" %s\n", _("Number of times to retry a failed connection"));
+
+ printf (UT_CONN_TIMEOUT, timeout_interval);
+
+ printf ("\n");
+ printf ("%s\n", _("This plugin tests a RADIUS server to see if it is accepting connections."));
+ printf ("%s\n", _("The server to test must be specified in the invocation, as well as a user"));
+ printf ("%s\n", _("name and password. A configuration file must be present. The format of"));
+ printf ("%s\n", _("the configuration file is described in the radiusclient library sources."));
+ printf ("%s\n", _("The password option presents a substantial security issue because the"));
+ printf ("%s\n", _("password can possibly be determined by careful watching of the command line"));
+ printf ("%s\n", _("in a process listing. This risk is exacerbated because the plugin will"));
+ printf ("%s\n", _("typically be executed at regular predictable intervals. Please be sure that"));
+ printf ("%s\n", _("the password used does not allow access to sensitive system resources."));
+
+ printf (UT_SUPPORT);
+}
+
+
+
+void
+print_usage (void)
+{
+ printf ("%s\n", _("Usage:"));
+ printf ("%s -H host -F config_file -u username -p password\n\
+ [-P port] [-t timeout] [-r retries] [-e expect]\n\
+ [-n nas-id] [-N nas-ip-addr]\n", progname);
+}
+
+
+
+int my_rc_read_config(char * a)
+{
+#if defined(HAVE_LIBFREERADIUS_CLIENT) || defined(HAVE_LIBRADIUSCLIENT_NG) || defined(HAVE_LIBRADCLI)
+ rch = rc_read_config(a);
+ return (rch == NULL) ? 1 : 0;
+#else
+ return rc_read_config(a);
+#endif
+}
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