/*
 * rlm_ldap.c	LDAP authorization and authentication module.
 *
 *   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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * This module is based on LDAP patch to Cistron radiusd by James Golovich
 * <james@wwnet.net>, which in turn was based mostly on a Mysql+Cistron patch
 * from <oyarzun@wilmington.net>
 *
 * 17 Jan 2000,	Adrian Pavlykevych <pam@polynet.lviv.ua>
 *	- OpenLDAP SDK porting, basic TLS support, LDAP authorization,
 *	  fault tolerance with multiple LDAP server support
 * 24 May 2000,	Adrian Pavlykevych <pam@polynet.lviv.ua>
 *	- Converting to new configuration file format, futher improvements
 *	  in fault tolerance, threaded operation
 * 12 Dec 2000,	Adrian Pavlykevych <pam@polynet.lviv.ua>
 *	- Added preliminary support for multiple instances
 * 	- moved all instance configuration into dynamicly allocated structure
 *	- Removed connection maintenance thread and all attempts for multihreading
 *	  the module itself. OpenLDAP SDK is not thread safe when used with shared
 *	  LDAP connection.
 *	- Added configuration option for defining LDAP attribute of user object,
 *	  which controls remote access.
 * 16 Feb 2001, Hannu Laurila <hannu.laurila@japo.fi>
 * 	- LDAP<->RADIUS attribute mappings are now read from a file
 *  	- Support for generic RADIUS check and reply attribute.
 * Jun 2001, Kostas Kalevras <kkalev@noc.ntua.gr>
 *	- Fix: check and reply attributes from LDAP _replace_ existing ones
 *	- Added "default_profile" directive, which points to radiusProfile
 *	  object, which contains default values for RADIUS users
 *	- Added "profile_attribute" directive, which specifies user object
 *	  attribute pointing to radiusProfile object.
 * Nov 2001, Kostas Kalevras <kkalev@noc.ntua.gr>
 *	- Added support for adding the user password to the check. Based on
 *	  the password_header directive rlm_ldap will strip the
 *	  password header if needed. This will make support for CHAP much easier.
 *	- Added module messages when we reject a user.
 *	- Added ldap_groupcmp to allow searching for user group membership.
 *	- Added ldap_xlat to allow ldap urls in xlat strings. Something like:
 *	  %{ldap:ldap:///dc=company,dc=com?cn?sub?uid=user}
 * Nov 2001, Gordon Tetlow <gordont@gnf.org>
 *	- Do an xlat on the access_group attribute.
 * Dec 2001, Kostas Kalevras <kkalev@noc.ntua.gr>
 *	- Added ldap caching for the default/regular profiles and group entries.
 *	- Fixed a memory leak in ldap_xlat.
 *	- Removed dict_attrbyname from ldap_pairget. They are not needed.
 *	- Moved the radius_xlat's for filter and basedn in ldap_authenticate() to
 *	  the right place.
 *	- Made the module thread safe. We create a connection pool and each thread
 *	  will call ldap_get_conn to lock one of the ldap connections and release with
 *	  a call to ldap_release_conn when it has finished.
 *	- Request only the user attributes that interest us (radius attributes,regular
 *	  profile,user password and access attribute).
 * Mar 2002, Kostas Kalevras <kkalev@noc.ntua.gr>
 *	- Fixed a bug where the ldap server will kill the idle connections from the ldap
 *	  connection pool. We now check if ldap_search returns LDAP_SERVER_DOWN and try to
 *	  reconnect if it does. Bug noted by Dan Perik <dan_perik-work@ntm.org.pg>
 * May 2002, Kostas Kalevras <kkalev@noc.ntua.gr>
 *	- Instead of the Group attribute we now have the Ldap-Group attribute, to avoid
 *	  collisions with other modules
 *	- If perform_search fails check the ld != NULL before using it. Based on a bug report
 *	  by John <jhogenmiller@pennswoods.net>
 * Jun 2002, Kostas Kalevras <kkalev@noc.ntua.gr>
 *	- Add the ability to do a paircmp on the check items. Add a compare_check_items boolean
 *	  configuration directive which defaults to no. If it is set then we will do a compare
 *	- Add another configuration directive. access_attr_used_for_allow. If it is set to yes
 *	  then the access_attr will be used to allow user access. If it is set to no then it will
 *	  be used to deny user access.
 *	- Remember to free inst->atts in ldap_detach()
 *	- Add a forgotten ldap_free_urldesc in ldap_xlat()
 *	- Add a variable locked in the LDAP_CONN structure. We use this to avoid deadlocks. The mutex
 *	  we are using is of type fast and can deadlock if the same thread tries to relock it. That
 *	  could happen in case of calls to xlat.
 *	- When ldap_search returns NO_SUCH_OBJECT don't return fail but notfound
 * Jul 2002, Kostas Kalevras <kkalev@noc.ntua.gr>
 *	- Fix the logic when we get an LDAP_SERVER_DOWN or we have conn->ld == NULL in perform_search
 *	- Try to minimize the penalty of having the ldap server go down. The comments before
 *	  MAX_FAILED_CONNS_* definitions should explain things.
 *	- Check for a number of error codes from ldap_search and log corresponding error messages
 *	  We should only reconnect when that can help things.
 *	- In ldap_groupcmp instead of first searching for the group object and then checking user
 *	  group membership combine them in one ldap search operation. That should make group
 *	  membership checks a lot faster.
 *	- Remember to do ldap_release_conn and ldap_msgfree when we do paircmp and the result is reject
 * Aug 2002, Kostas Kalevras <kkalev@noc.ntua.gr>
 *	- Add support for group membership attribute inside the user entry in ldap_groupcmp. The attribute
 *	  can either contain the name or the DN of the group. Added the groupmembership_attribute
 *	  configuration directive
 *	- Move the ldap_{get,release}_conn in ldap_groupcmp so that we hold a connection for the minimum time.
 *	- Now that ldap_groupcmp is complete we really don't need access_group. Removed it.
 *	- Remember to free groupmembership_attribute in ldap_detach
 *	- Don't delete existing generic attributes in ldap_pairget when adding new ones. Since generic attributes
 *	  have operators we don't need to try to be cleaver.
 * Sep 2002, Kostas Kalevras <kkalev@noc.ntua.gr>
 *	- Fix a crash in ldap_pairget when the attribute value is larger than the buffer size
 *	  Bug report by Stefan Radovanovici <sra@rtsffm.com>
 *	- If we add a check item then use the == operator. Based on an idea by Allister Maguire <amaguire@gnc.net.nz>
 *	- Only add a failure message for bind as user failed in ldap_authenticate if the result of ldap_connect was
 *	  RLM_MODULE_REJECT
 *	- Make tls_mode a configurable option. Patch from John <jhogenmiller@pennswoods.net>
 *	- Allow multiple regular profiles for an entry
 * Oct 2002, Kostas Kalevras <kkalev@noc.ntua.gr>
 *	- Disable cache after searching for the default profile
 *	- Use the MAX_FAILED_CONNS_* in ldap_authenticate() when calling ldap_connect()
 * Nov 2002, Kostas Kalevras <kkalev@noc.ntua.gr>
 *	- Set LDAP version to V3 before binding. Now freeradius should work with openldap21
 * Dec 2002, Kostas Kalevras <kkalev@noc.ntua.gr>
 *	- Set default values for the server and basedn parameters
 * Feb 2003, Kostas Kalevras <kkalev@noc.ntua.gr>
 *	- Add support for ldap_initialize. That way we can specify the server as an ldap url.
 *	  Based on ideas from Derrik Pates <dpates@dsdk12.net>
 * Mar 2003, Kostas Kalevras <kkalev@noc.ntua.gr>
 * 	- Add an ldap_escape_func. Escape the * character from the filter so that we can avoid
 * 	  the trivial DoS of username=*
 * 	- Remove the caching code. It does not exist in openldap21.
 *	  Based on a report from Mike Denka <mdenk@whidbey.net>
 * May 2003, Kostas Kalevras <kkalev@noc.ntua.gr>
 *	- Don't do a double free on the attribute maps. Bug noted by Derrik Pates <dpates@dsdk12.net>
 *	- Apply a patch from Alexander M. Pravking <fduch@antar.bryansk.ru> to do an xlat on the
 *	  retrieved attributes.
 * Aug 2003, Kostas Kalevras <kkalev@noc.ntua.gr>
 *	- In case of a bad search filter, print out the corresponding filter
 * Sep 2003, Kostas Kalevras <kkalev@noc.ntua.gr>
 *	- Compile even if we don't have pthread's
 * Oct 2003, Kostas Kalevras <kkalev@noc.ntua.gr>
 *	- Add a new configuration directive, base_filter which is used for base scope searches
 *	  (When searching for the default/regular profiles for example)
 * Nov 2003, Kostas Kalevras <kkalev@noc.ntua.gr>
 *	- Add a new configuration directive, do_xlat (default: yes). If set we use pairxlatmove
 *	  on the radius attributes, else we fall back to the plain old pairadd. That way people
 *	  can fall back on the 0.8.1 behaviour without making changes to their ldap database or
 *	  gain a little performance by not using pairxlatmove
 * Dec 2003, Kostas Kalevras <kkalev@noc.ntua.gr>
 *	- Add a patch from Jon Miner <miner@doit.wisc.edu> to add the ability to configure
 *	  various LDAP TLS options
 *	- Only call pairfree if we are using pairxlatmove not for pairadd
 * Mar 2004, Kostas Kalevras <kkalev@noc.ntua.gr>
 *	- If we are passed an empty password log a module failure message not an error message
 * Apr 2004, Kostas Kalveras <kkalev@noc.ntua.gr>
 *	- Add a patch from Tarun Bhushan <tarun.bhushan@macquarie.com> to add a tls_mode boolean
 *	  directive so that we can enable TLS connetions even if port is not set to 636
 *	- Add an error message if ldap_initialize() is not available and we are passed a URL like
 *	  'server' directive.
 *	- Add a per instance Ldap-Group attribute (of the form <instance>-Ldap-Group) and register
 *	  a corresponding ldap_groupcmp function
 *	- Small change to ldap_get_conn to fix problems on some platforms
 */
static const char rcsid[] = "$Id: rlm_ldap.c,v 1.122.2.8.2.8 2007/04/08 07:14:45 aland Exp $";

#include "autoconf.h"

#include	<sys/types.h>
#include	<sys/socket.h>
#include	<sys/time.h>
#include	<netinet/in.h>

#include	<stdio.h>
#include	<stdlib.h>
#include	<netdb.h>
#include	<pwd.h>
#include	<time.h>
#include	<ctype.h>
#include	<string.h>

#include	<lber.h>
#include        <ldap.h>

#include	<errno.h>
#include	<unistd.h>
#include	<pthread.h>

#include        "libradius.h"
#include	"radiusd.h"
#include	"conffile.h"
#include	"modules.h"
#include	"rad_assert.h"

#ifndef HAVE_PTHREAD_H
/*
 *      This is a lot simpler than putting ifdef's around
 *      every use of the pthread functions.
 */
#define pthread_mutex_lock(a)
#define pthread_mutex_trylock(a) (0)
#define pthread_mutex_unlock(a)
#define pthread_mutex_init(a,b)
#define pthread_mutex_destroy(a)
#endif


#define MAX_FILTER_STR_LEN	1024
#define TIMELIMIT 5

/*
 * These are used in case ldap_search returns LDAP_SERVER_DOWN
 * In that case we do conn->failed_conns++ and then check it:
 * If conn->failed_conns <= MAX_FAILED_CONNS_START then we try
 * to reconnect
 * conn->failed_conns is also checked on entrance in perform_search:
 * If conn->failed_conns > MAX_FAILED_CONNS_START then we don't
 * try to do anything and we just do conn->failed_conns++ and
 * return RLM_MODULE_FAIL
 * if conn->failed_conns >= MAX_FAILED_CONNS_END then we give it
 * another chance and we set it to MAX_FAILED_CONNS_RESTART and
 * try to reconnect.
 *
 *
 * We are assuming that the majority of the LDAP_SERVER_DOWN cases
 * will either be an ldap connection timeout or a temporary ldap
 * server problem.
 * As a result we make a few attempts to reconnect hoping that the problem
 * will soon go away. If it does not go away then we just return
 * RLM_MODULE_FAIL on entrance in perform_search until conn->failed_conns
 * gets to MAX_FAILED_CONNS_END. After that we give it one more chance by
 * going back to MAX_FAILED_CONNS_RESTART
 *
 */

#define MAX_FAILED_CONNS_END		20
#define MAX_FAILED_CONNS_RESTART	4
#define MAX_FAILED_CONNS_START		5

#ifdef NOVELL_UNIVERSAL_PASSWORD

/* Universal Password Length */
#define UNIVERSAL_PASS_LEN 256

int nmasldap_get_password(
	LDAP	 *ld,
	char     *objectDN,
	size_t   *pwdSize,	/* in bytes */
	char     *pwd );

#endif

/* linked list of mappings between RADIUS attributes and LDAP attributes */
struct TLDAP_RADIUS {
	char*                 attr;
	char*                 radius_attr;
	struct TLDAP_RADIUS*  next;
};
typedef struct TLDAP_RADIUS TLDAP_RADIUS;

typedef struct ldap_conn {
	LDAP		*ld;
	char		bound;
	char		locked;
	int		failed_conns;
#ifdef HAVE_PTHREAD_H
	pthread_mutex_t	mutex;
#endif
} LDAP_CONN;

typedef struct {
	char           *server;
	int             port;
	int             timelimit;
	struct timeval  net_timeout;
	struct timeval  timeout;
	int             debug;
	int             tls_mode;
	int		start_tls;
	int		num_conns;
	int		do_comp;
	int		do_xlat;
	int		default_allow;
	int		failed_conns;
	int		is_url;
	char           *login;
	char           *password;
	char           *filter;
	char           *base_filter;
	char           *basedn;
	char           *default_profile;
	char           *profile_attr;
	char           *access_attr;
	char           *passwd_hdr;
	char           *passwd_attr;
	char           *dictionary_mapping;
	char	       *groupname_attr;
	char	       *groupmemb_filt;
	char           *groupmemb_attr;
	char		**atts;
	TLDAP_RADIUS   *check_item_map;
	TLDAP_RADIUS   *reply_item_map;
	LDAP_CONN	*conns;
#ifdef NOVELL
	LDAP_CONN *apc_conns;
#endif
	int             ldap_debug; /* Debug flag for LDAP SDK */
	char		*xlat_name; /* name used to xlat */
	char		*tls_cacertfile;
	char		*tls_cacertdir;
	char		*tls_certfile;
	char		*tls_keyfile;
	char		*tls_randfile;
	char		*tls_require_cert;
#ifdef NOVELL
	int			edir_account_policy_check;
#endif
	int		set_auth_type;
}               ldap_instance;

/* The default setting for TLS Certificate Verification */
#define TLS_DEFAULT_VERIFY "allow"

static CONF_PARSER module_config[] = {
	{"server", PW_TYPE_STRING_PTR, offsetof(ldap_instance,server), NULL, "localhost"},
	{"port", PW_TYPE_INTEGER, offsetof(ldap_instance,port), NULL, "389"},
	/* wait forever on network activity */
	{"net_timeout", PW_TYPE_INTEGER, offsetof(ldap_instance,net_timeout.tv_sec), NULL, "10"},
	/* wait forever for search results */
	{"timeout", PW_TYPE_INTEGER, offsetof(ldap_instance,timeout.tv_sec), NULL, "20"},
	/* allow server unlimited time for search (server-side limit) */
	{"timelimit", PW_TYPE_INTEGER, offsetof(ldap_instance,timelimit), NULL, "20"},
	{"identity", PW_TYPE_STRING_PTR, offsetof(ldap_instance,login), NULL, ""},
	{"tls_mode", PW_TYPE_BOOLEAN, offsetof(ldap_instance,tls_mode), NULL, "no"},
	{"start_tls", PW_TYPE_BOOLEAN, offsetof(ldap_instance,start_tls), NULL, "no"},
	{"tls_cacertfile", PW_TYPE_STRING_PTR, offsetof(ldap_instance,tls_cacertfile), NULL, NULL},
	{"tls_cacertdir", PW_TYPE_STRING_PTR, offsetof(ldap_instance,tls_cacertdir), NULL, NULL},
	{"tls_certfile", PW_TYPE_STRING_PTR, offsetof(ldap_instance,tls_certfile), NULL, NULL},
	{"tls_keyfile", PW_TYPE_STRING_PTR, offsetof(ldap_instance,tls_keyfile), NULL, NULL},
	{"tls_randfile", PW_TYPE_STRING_PTR, offsetof(ldap_instance,tls_randfile), NULL, NULL},
	{"tls_require_cert", PW_TYPE_STRING_PTR, offsetof(ldap_instance,tls_require_cert), NULL, TLS_DEFAULT_VERIFY},
	{"password", PW_TYPE_STRING_PTR, offsetof(ldap_instance,password), NULL, ""},
	{"basedn", PW_TYPE_STRING_PTR, offsetof(ldap_instance,basedn), NULL, "o=notexist"},
	{"filter", PW_TYPE_STRING_PTR, offsetof(ldap_instance,filter), NULL, "(uid=%u)"},
	{"base_filter", PW_TYPE_STRING_PTR, offsetof(ldap_instance,base_filter), NULL, "(objectclass=radiusprofile)"},
	{"default_profile", PW_TYPE_STRING_PTR, offsetof(ldap_instance,default_profile), NULL, NULL},
	{"profile_attribute", PW_TYPE_STRING_PTR, offsetof(ldap_instance,profile_attr), NULL, NULL},
	{"password_header", PW_TYPE_STRING_PTR, offsetof(ldap_instance,passwd_hdr), NULL, NULL},
	{"password_attribute", PW_TYPE_STRING_PTR, offsetof(ldap_instance,passwd_attr), NULL, NULL},
	/* LDAP attribute name that controls remote access */
	{"access_attr", PW_TYPE_STRING_PTR, offsetof(ldap_instance,access_attr), NULL, NULL},
	/* file with mapping between LDAP and RADIUS attributes */
	{"groupname_attribute", PW_TYPE_STRING_PTR, offsetof(ldap_instance,groupname_attr), NULL, "cn"},
	{"groupmembership_filter", PW_TYPE_STRING_PTR, offsetof(ldap_instance,groupmemb_filt), NULL, "(|(&(objectClass=GroupOfNames)(member=%{Ldap-UserDn}))(&(objectClass=GroupOfUniqueNames)(uniquemember=%{Ldap-UserDn})))"},
	{"groupmembership_attribute", PW_TYPE_STRING_PTR, offsetof(ldap_instance,groupmemb_attr), NULL, NULL},
	{"dictionary_mapping", PW_TYPE_STRING_PTR, offsetof(ldap_instance,dictionary_mapping), NULL, "${confdir}/ldap.attrmap"},
	{"ldap_debug", PW_TYPE_INTEGER, offsetof(ldap_instance,ldap_debug), NULL, "0x0000"},
	{"ldap_connections_number", PW_TYPE_INTEGER, offsetof(ldap_instance,num_conns), NULL, "5"},
	{"compare_check_items", PW_TYPE_BOOLEAN, offsetof(ldap_instance,do_comp), NULL, "no"},
	{"access_attr_used_for_allow", PW_TYPE_BOOLEAN, offsetof(ldap_instance,default_allow), NULL, "yes"},
	{"do_xlat", PW_TYPE_BOOLEAN, offsetof(ldap_instance,do_xlat), NULL, "yes"},
#ifdef NOVELL
	{"edir_account_policy_check", PW_TYPE_BOOLEAN, offsetof(ldap_instance,edir_account_policy_check), NULL, "yes"},
#endif

	{"set_auth_type", PW_TYPE_BOOLEAN, offsetof(ldap_instance,set_auth_type), NULL, "yes"},
	{NULL, -1, 0, NULL, NULL}
};

#define ld_valid                ld_options.ldo_valid
#define LDAP_VALID_SESSION      0x2
#define LDAP_VALID(ld)  ( (ld)->ld_valid == LDAP_VALID_SESSION )

#ifdef FIELDCPY
static void     fieldcpy(char *, char **);
#endif
static VALUE_PAIR *ldap_pairget(LDAP *, LDAPMessage *, TLDAP_RADIUS *,VALUE_PAIR **,char);
static int ldap_groupcmp(void *, REQUEST *, VALUE_PAIR *, VALUE_PAIR *, VALUE_PAIR *, VALUE_PAIR **);
static int ldap_xlat(void *, REQUEST *, char *, char *, size_t, RADIUS_ESCAPE_STRING);
static LDAP    *ldap_connect(void *instance, const char *, const char *, int, int *, char **);
static int     read_mappings(ldap_instance* inst);

static inline int ldap_get_conn(LDAP_CONN *conns,LDAP_CONN **ret,void *instance)
{
	ldap_instance *inst = instance;
	register int i = 0;

	for(i=0;i<inst->num_conns;i++){
		DEBUG("rlm_ldap: ldap_get_conn: Checking Id: %d",i);
		if (conns[i].locked == 0 && pthread_mutex_trylock(&(conns[i].mutex)) == 0){
			*ret = &conns[i];
			conns[i].locked = 1;
			DEBUG("rlm_ldap: ldap_get_conn: Got Id: %d",i);
			return i;
		}
	}

	return -1;
}

static inline void ldap_release_conn(int i, LDAP_CONN *conns)
{
	DEBUG("rlm_ldap: ldap_release_conn: Release Id: %d",i);
	conns[i].locked = 0;
	pthread_mutex_unlock(&(conns[i].mutex));
}

/*************************************************************************
 *
 *	Function: rlm_ldap_instantiate
 *
 *	Purpose: Uses section of radiusd config file passed as parameter
 *		 to create an instance of the module.
 *
 *************************************************************************/
static int
ldap_instantiate(CONF_SECTION * conf, void **instance)
{
	ldap_instance  *inst;
	int i = 0;
	int atts_num = 0;
	int reply_map_num = 0;
	int check_map_num = 0;
	int att_map[3] = {0,0,0};
	TLDAP_RADIUS *pair;
	ATTR_FLAGS flags;
	char *xlat_name;
	DICT_VALUE *dv;

	inst = rad_malloc(sizeof *inst);
	if (!inst) {
		return -1;
	}
	memset(inst, 0, sizeof(*inst));

	if (cf_section_parse(conf, inst, module_config) < 0) {
		free(inst);
		return -1;
	}

	if (inst->server == NULL) {
		radlog(L_ERR, "rlm_ldap: missing 'server' directive.");
		free(inst);
		return -1;
	}
	inst->is_url = 0;
	if (ldap_is_ldap_url(inst->server)){
#ifdef HAVE_LDAP_INITIALIZE
		inst->is_url = 1;
		inst->port = 0;
#else
		radlog(L_ERR, "rlm_ldap: 'server' directive is in URL form but ldap_initialize() is not available.");
		free(inst);
		return -1;
#endif
	}

	inst->timeout.tv_usec = 0;
	inst->net_timeout.tv_usec = 0;
	/* workaround for servers which support LDAPS but not START TLS */
	if(inst->port == LDAPS_PORT || inst->tls_mode)
		inst->tls_mode = LDAP_OPT_X_TLS_HARD;
	else
		inst->tls_mode = 0;
	inst->reply_item_map = NULL;
	inst->check_item_map = NULL;
	inst->conns = NULL;
	inst->failed_conns = 0;

	DEBUG("rlm_ldap: Registering ldap_groupcmp for Ldap-Group");
	paircompare_register(PW_LDAP_GROUP, PW_USER_NAME, ldap_groupcmp, inst);
	memset(&flags, 0, sizeof(flags));

	xlat_name = cf_section_name2(conf);
	if (xlat_name != NULL){
		char *group_name;
		DICT_ATTR *dattr;

		/*
		 * Allocate room for <instance>-Ldap-Group
		 */
		group_name = malloc((strlen(xlat_name) + 1 + 11) * sizeof(char));
		rad_assert(group_name != NULL);
		sprintf(group_name,"%s-Ldap-Group",xlat_name);
		DEBUG("rlm_ldap: Creating new attribute %s",group_name);
		dict_addattr(group_name, 0, PW_TYPE_STRING, -1, flags);
		dattr = dict_attrbyname(group_name);
		if (dattr == NULL){
			radlog(L_ERR, "rlm_ldap: Failed to create attribute %s",group_name);
			free(inst);
			return -1;
		}
		DEBUG("rlm_ldap: Registering ldap_groupcmp for %s",group_name);
		paircompare_register(dattr->attr, PW_USER_NAME, ldap_groupcmp, inst);
	}
	else {
		xlat_name = cf_section_name1(conf);
		rad_assert(xlat_name != NULL); /* or all hell breaks loose */
	}
	inst->xlat_name = strdup(xlat_name);
	DEBUG("rlm_ldap: Registering ldap_xlat with xlat_name %s",xlat_name);
	xlat_register(xlat_name,ldap_xlat,inst);

	/*
	 *	Over-ride set_auth_type if there's no Auth-Type of our name.
	 *	This automagically catches the case where LDAP is listed
	 *	in "authorize", but not "authenticate".
	 */
	dv = dict_valbyname(PW_AUTH_TYPE, xlat_name);
	if (!dv) {
		if (inst->set_auth_type) {
			DEBUG2("rlm_ldap: Over-riding set_auth_type, as we're not listed in the \"authenticate\" section.");
		}
	  inst->set_auth_type = 0;
	}

#ifdef NOVELL
	/*
	 * (LDAP_Instance, V1) attribute-value pair in the config items list means
	 * that the 'authorize' method of the instance 'V1' of the LDAP module has
	 * processed this request.
	 */
	dict_addattr("LDAP-Instance", 0, PW_TYPE_STRING, -1, flags);
	/*
	 * ('eDir-APC', '1') in config items list => Do not perform eDirectory account
	 *                                           policy check (APC)
	 * ('eDir-APC', '2') in config items list => Perform eDirectory APC
	 * ('eDir-APC', '3') in config items list => eDirectory APC has been completed
	 */
	dict_addattr("eDir-APC", 0, PW_TYPE_INTEGER, -1, flags);
#endif

	if (inst->num_conns <= 0){
		radlog(L_ERR, "rlm_ldap: Invalid ldap connections number passed.");
		free(inst);
		return -1;
	}
	inst->conns = (LDAP_CONN *)malloc(sizeof(LDAP_CONN)*inst->num_conns);
	if (inst->conns == NULL){
		radlog(L_ERR, "rlm_ldap: Could not allocate memory. Aborting.");
		free(inst);
		return -1;
	}
	for(;i<inst->num_conns;i++){
		inst->conns[i].bound = 0;
		inst->conns[i].locked = 0;
		inst->conns[i].failed_conns = 0;
		inst->conns[i].ld = NULL;
		pthread_mutex_init(&inst->conns[i].mutex, NULL);
	}

#ifdef NOVELL
	/*
	 * 'inst->apc_conns' is a separate connection pool to be used for performing
	 * eDirectory account policy check in the 'postauth' method. This avoids
	 * changing the (RADIUS server) credentials associated with the 'inst->conns'
	 * connection pool.
	 */
	inst->apc_conns = (LDAP_CONN *)malloc(sizeof(LDAP_CONN)*inst->num_conns);
	if (inst->apc_conns == NULL){
		radlog(L_ERR, "rlm_ldap: Could not allocate memory. Aborting.");
		free(inst);
		return -1;
	}
	for(i = 0; i < inst->num_conns; i++){
		inst->apc_conns[i].bound = 0;
		inst->apc_conns[i].locked = 0;
		inst->apc_conns[i].failed_conns = 0;
		inst->apc_conns[i].ld = NULL;
		pthread_mutex_init(&inst->apc_conns[i].mutex, NULL);
	}
#endif

	if (read_mappings(inst) != 0) {
		radlog(L_ERR, "rlm_ldap: Reading dictionary mappings from file %s failed",
		       inst->dictionary_mapping);
		free(inst);
		return -1;
	}
	if (inst->check_item_map == NULL && inst->reply_item_map == NULL){
		radlog(L_ERR, "rlm_ldap: dictionary mappings file %s did not contain any mappings",
			inst->dictionary_mapping);
		free(inst);
		return -1;
	}

	pair = inst->check_item_map;
	while(pair != NULL){
		atts_num++;
		pair = pair->next;
	}
	check_map_num = (atts_num - 1);
	pair = inst->reply_item_map;
	while(pair != NULL){
		atts_num++;
		pair = pair->next;
	}
	reply_map_num = (atts_num - 1);
	if (inst->profile_attr)
		atts_num++;
	if (inst->passwd_attr)
		atts_num++;
	if (inst->access_attr)
		atts_num++;
	inst->atts = (char **)malloc(sizeof(char *)*(atts_num + 1));
	if (inst->atts == NULL){
		radlog(L_ERR, "rlm_ldap: Could not allocate memory. Aborting.");
		free(inst);
		return -1;
	}
	pair = inst->check_item_map;
	if (pair == NULL)
		pair = inst->reply_item_map;
	for(i=0;i<atts_num;i++){
		if (i <= check_map_num ){
			inst->atts[i] = pair->attr;
			if (i == check_map_num)
				pair = inst->reply_item_map;
			else
				pair = pair->next;
		}
		else if (i <= reply_map_num){
			inst->atts[i] = pair->attr;
			pair = pair->next;
		}
		else{
			if (inst->profile_attr && !att_map[0]){
				inst->atts[i] = inst->profile_attr;
				att_map[0] = 1;
			}
			else if (inst->passwd_attr && !att_map[1]){
				inst->atts[i] = inst->passwd_attr;
				att_map[1] = 1;
			}
			else if (inst->access_attr && !att_map[2]){
				inst->atts[i] = inst->access_attr;
				att_map[2] = 1;
			}
		}
	}
	inst->atts[atts_num] = NULL;

	DEBUG("conns: %p",inst->conns);

	*instance = inst;


	return 0;
}


/*
 * read_mappings(...) reads a ldap<->radius mappings file to inst->reply_item_map and inst->check_item_map
 */

#define MAX_LINE_LEN 160
#define GENERIC_ATTRIBUTE_ID "$GENERIC$"

static int
read_mappings(ldap_instance* inst)
{
	FILE* mapfile;
	char *filename;
	/* all buffers are of MAX_LINE_LEN so we can use sscanf without being afraid of buffer overflows */
	char buf[MAX_LINE_LEN], itemType[MAX_LINE_LEN], radiusAttribute[MAX_LINE_LEN], ldapAttribute[MAX_LINE_LEN];
	int linenumber;

	/* open the mappings file for reading */

	filename = inst->dictionary_mapping;
	DEBUG("rlm_ldap: reading ldap<->radius mappings from file %s", filename);
	mapfile = fopen(filename, "r");

	if (mapfile == NULL) {
		radlog(L_ERR, "rlm_ldap: Opening file %s failed", filename);
		return -1; /* error */
	}

	/* read file line by line. Note that if line length exceed MAX_LINE_LEN, line numbers will be mixed up */

	linenumber = 0;

	while (fgets(buf, sizeof buf, mapfile)!=NULL) {
		char* ptr;
		int token_count;
		TLDAP_RADIUS* pair;

		linenumber++;

		/* strip comments */
		ptr = strchr(buf, '#');
		if (ptr) *ptr = 0;

		/* empty line */
		if (buf[0] == 0) continue;

		/* extract tokens from the string */
		token_count = sscanf(buf, "%s %s %s", itemType, radiusAttribute, ldapAttribute);

		if (token_count <= 0) /* no tokens */
			continue;

		if (token_count != 3) {
			radlog(L_ERR, "rlm_ldap: Skipping %s line %i: %s", filename, linenumber, buf);
			radlog(L_ERR, "rlm_ldap: Expected 3 tokens "
			       "(Item type, RADIUS Attribute and LDAP Attribute) but found only %i", token_count);
			continue;
		}

		/* create new TLDAP_RADIUS list node */
		pair = rad_malloc(sizeof(TLDAP_RADIUS));

		pair->attr = strdup(ldapAttribute);
		pair->radius_attr = strdup(radiusAttribute);

		if ( (pair->attr == NULL) || (pair->radius_attr == NULL) ) {
			radlog(L_ERR, "rlm_ldap: Out of memory");
			if (pair->attr) free(pair->attr);
			if (pair->radius_attr) free(pair->radius_attr);
			free(pair);
			fclose(mapfile);
			return -1;
		}

		/* push node to correct list */
		if (strcasecmp(itemType, "checkItem") == 0) {
			pair->next = inst->check_item_map;
			inst->check_item_map = pair;
		} else if (strcasecmp(itemType, "replyItem") == 0) {
			pair->next = inst->reply_item_map;
			inst->reply_item_map = pair;
		} else {
			radlog(L_ERR, "rlm_ldap: file %s: skipping line %i: unknown itemType %s",
			       filename, linenumber, itemType);
			free(pair->attr);
			free(pair->radius_attr);
			free(pair);
			continue;
		}

		DEBUG("rlm_ldap: LDAP %s mapped to RADIUS %s",
		      pair->attr, pair->radius_attr);
	}

	fclose(mapfile);

	return 0; /* success */
}

static int
perform_search(void *instance, LDAP_CONN *conn, char *search_basedn, int scope, char *filter,
		char **attrs, LDAPMessage ** result)
{
	int             res = RLM_MODULE_OK;
	int		ldap_errno = 0;
	ldap_instance  *inst = instance;
	int		search_retry = 0;

	*result = NULL;

	if (!conn){
		radlog(L_ERR, "rlm_ldap: NULL connection handle passed");
		return RLM_MODULE_FAIL;
	}
	if (conn->failed_conns > MAX_FAILED_CONNS_START){
		conn->failed_conns++;
		if (conn->failed_conns >= MAX_FAILED_CONNS_END){
			conn->failed_conns = MAX_FAILED_CONNS_RESTART;
			conn->bound = 0;
		}
	}
retry:
	if (!conn->bound || conn->ld == NULL) {
		DEBUG2("rlm_ldap: attempting LDAP reconnection");
		if (conn->ld){
			DEBUG2("rlm_ldap: closing existing LDAP connection");
			ldap_unbind_s(conn->ld);
		}
		if ((conn->ld = ldap_connect(instance, inst->login,
					     inst->password, 0, &res, NULL)) == NULL) {
			radlog(L_ERR, "rlm_ldap: (re)connection attempt failed");
			if (search_retry == 0)
				conn->failed_conns++;
			return (RLM_MODULE_FAIL);
		}
		conn->bound = 1;
		conn->failed_conns = 0;
	}
	DEBUG2("rlm_ldap: performing search in %s, with filter %s", search_basedn ? search_basedn : "(null)" , filter);
	switch (ldap_search_st(conn->ld, search_basedn, scope, filter, attrs, 0, &(inst->timeout), result)) {
	case LDAP_SUCCESS:
	case LDAP_NO_SUCH_OBJECT:
		break;
	case LDAP_SERVER_DOWN:
		radlog(L_ERR, "rlm_ldap: ldap_search() failed: LDAP connection lost.");
		conn->failed_conns++;
		if (search_retry == 0){
			if (conn->failed_conns <= MAX_FAILED_CONNS_START){
				radlog(L_INFO, "rlm_ldap: Attempting reconnect");
				search_retry = 1;
				conn->bound = 0;
				ldap_msgfree(*result);
				goto retry;
			}
		}
		ldap_msgfree(*result);
		return RLM_MODULE_FAIL;
	case LDAP_INSUFFICIENT_ACCESS:
		radlog(L_ERR, "rlm_ldap: ldap_search() failed: Insufficient access. Check the identity and password configuration directives.");
		ldap_msgfree(*result);
		return RLM_MODULE_FAIL;
	case LDAP_TIMEOUT:
		radlog(L_ERR, "rlm_ldap: ldap_search() failed: Timed out while waiting for server to respond. Please increase the timeout.");
		ldap_msgfree(*result);
		return RLM_MODULE_FAIL;
	case LDAP_FILTER_ERROR:
		radlog(L_ERR, "rlm_ldap: ldap_search() failed: Bad search filter: %s",filter);
		ldap_msgfree(*result);
		return RLM_MODULE_FAIL;
	case LDAP_TIMELIMIT_EXCEEDED:
	case LDAP_BUSY:
	case LDAP_UNAVAILABLE:
		/* We don't need to reconnect in these cases so we don't set conn->bound */
		ldap_get_option(conn->ld, LDAP_OPT_ERROR_NUMBER, &ldap_errno);
		radlog(L_ERR, "rlm_ldap: ldap_search() failed: %s", ldap_err2string(ldap_errno));
		ldap_msgfree(*result);
		return (RLM_MODULE_FAIL);
	default:
		ldap_get_option(conn->ld, LDAP_OPT_ERROR_NUMBER, &ldap_errno);
		radlog(L_ERR, "rlm_ldap: ldap_search() failed: %s", ldap_err2string(ldap_errno));
		conn->bound = 0;
		ldap_msgfree(*result);
		return (RLM_MODULE_FAIL);
	}

	if ((ldap_count_entries(conn->ld, *result)) != 1) {
		DEBUG("rlm_ldap: object not found or got ambiguous search result");
		res = RLM_MODULE_NOTFOUND;
		ldap_msgfree(*result);
	}
	return res;
}


/*
 *	Translate the LDAP queries.
 */
static int ldap_escape_func(char *out, int outlen, const char *in)
{
	int len = 0;

	while (in[0]) {
		/*
		 *	Encode unsafe characters.
		 */
		if (((len == 0) &&
		    ((in[0] == ' ') || (in[0] == '#'))) ||
		    (strchr(",+\"\\<>;*=()", *in))) {
			static const char hex[] = "0123456789abcdef";

			/*
			 *	Only 3 or less bytes available.
			 */
			if (outlen <= 3) {
				break;
			}

			*(out++) = '\\';
			*(out++) = hex[((*in) >> 4) & 0x0f];
			*(out++) = hex[(*in) & 0x0f];
			outlen -= 3;
			len += 3;
			in++;
			continue;
		}

		/*
		 *	Only one byte left.
		 */
		if (outlen <= 1) {
			break;
		}

		/*
		 *	Allowed character.
		 */
		*(out++) = *(in++);
		outlen--;
		len++;
	}
	*out = '\0';
	return len;
}

/*
 * ldap_groupcmp(). Implement the Ldap-Group == "group" filter
 */

static int ldap_groupcmp(void *instance, REQUEST *req, VALUE_PAIR *request, VALUE_PAIR *check,
                VALUE_PAIR *check_pairs, VALUE_PAIR **reply_pairs)
{
        char            filter[MAX_FILTER_STR_LEN];
        char            gr_filter[MAX_FILTER_STR_LEN];
        int             res;
        LDAPMessage     *result = NULL;
        LDAPMessage     *msg = NULL;
        char            basedn[MAX_FILTER_STR_LEN];
	char		*attrs[] = {"dn",NULL};
	char		**vals;
        ldap_instance   *inst = instance;
	char		*group_attrs[] = {inst->groupmemb_attr,NULL};
	LDAP_CONN	*conn;
	int		conn_id = -1;
	VALUE_PAIR	*vp_user_dn;
	VALUE_PAIR      **request_pairs;

	request_pairs = &req->packet->vps;

	DEBUG("rlm_ldap: Entering ldap_groupcmp()");

	if (check->strvalue == NULL || check->length == 0){
                DEBUG("rlm_ldap::ldap_groupcmp: Illegal group name");
                return 1;
        }

        if (req == NULL){
                DEBUG("rlm_ldap::ldap_groupcmp: NULL request");
                return 1;
        }

        if (!radius_xlat(basedn, sizeof(basedn), inst->basedn, req, ldap_escape_func)) {
                DEBUG("rlm_ldap::ldap_groupcmp: unable to create basedn.");
                return 1;
        }

        while((vp_user_dn = pairfind(*request_pairs, PW_LDAP_USERDN)) == NULL){
                char            *user_dn = NULL;

                if (!radius_xlat(filter, sizeof(filter), inst->filter,
					req, ldap_escape_func)){
                        DEBUG("rlm_ldap::ldap_groupcmp: unable to create filter");
                        return 1;
                }
		if ((conn_id = ldap_get_conn(inst->conns,&conn,inst)) == -1){
			radlog(L_ERR, "rlm_ldap: All ldap connections are in use");
			return 1;
		}
                if ((res = perform_search(inst, conn, basedn, LDAP_SCOPE_SUBTREE,
					filter, attrs, &result)) != RLM_MODULE_OK){
                        DEBUG("rlm_ldap::ldap_groupcmp: search failed");
			ldap_release_conn(conn_id,inst->conns);
                        return 1;
                }
                if ((msg = ldap_first_entry(conn->ld, result)) == NULL) {
                        DEBUG("rlm_ldap::ldap_groupcmp: ldap_first_entry() failed");
			ldap_release_conn(conn_id,inst->conns);
                        ldap_msgfree(result);
                        return 1;
                }
                if ((user_dn = ldap_get_dn(conn->ld, msg)) == NULL) {
                        DEBUG("rlm_ldap:ldap_groupcmp:: ldap_get_dn() failed");
			ldap_release_conn(conn_id,inst->conns);
                        ldap_msgfree(result);
                        return 1;
                }
		ldap_release_conn(conn_id,inst->conns);
                /*
                * Adding new attribute containing DN for LDAP object associated with
                * given username
                */
                pairadd(request_pairs, pairmake("Ldap-UserDn", user_dn, T_OP_EQ));
                ldap_memfree(user_dn);
                ldap_msgfree(result);
        }

        if(!radius_xlat(gr_filter, sizeof(gr_filter), inst->groupmemb_filt, req, ldap_escape_func)){
                DEBUG("rlm_ldap::ldap_groupcmp: unable to create filter.");
                return 1;
        }

	if (strchr((char *)check->strvalue,',') != NULL) {
		/* This looks like a DN */
		snprintf(filter,sizeof(filter), "%s",gr_filter);
		snprintf(basedn,sizeof(basedn), "%s",(char *)check->strvalue);
	} else
		snprintf(filter,sizeof(filter), "(&(%s=%s)%s)",inst->groupname_attr,(char *)check->strvalue,gr_filter);

	if ((conn_id = ldap_get_conn(inst->conns,&conn,inst)) == -1){
		radlog(L_ERR, "rlm_ldap: All ldap connections are in use");
		return 1;
	}

	if ((res = perform_search(inst, conn, basedn, LDAP_SCOPE_SUBTREE,
				filter, attrs, &result)) == RLM_MODULE_OK){
		DEBUG("rlm_ldap::ldap_groupcmp: User found in group %s",
				(char *)check->strvalue);
		ldap_msgfree(result);
		ldap_release_conn(conn_id,inst->conns);
        	return 0;
	}

	ldap_release_conn(conn_id,inst->conns);

	if (res != RLM_MODULE_NOTFOUND ) {
		DEBUG("rlm_ldap::ldap_groupcmp: Search returned error");
		return 1;
	}

	if (inst->groupmemb_attr == NULL){
		/* search returned NOTFOUND and searching for membership
		 * using user object attributes is not specified in config
		 * file
		 */
		DEBUG("rlm_ldap::ldap_groupcmp: Group %s not found or user is not a member.",(char *)check->strvalue);
		return 1;
	}

	snprintf(filter,sizeof(filter), "(objectclass=*)");
	if ((conn_id = ldap_get_conn(inst->conns,&conn,inst)) == -1){
		radlog(L_ERR, "rlm_ldap: Add ldap connections are in use");
		return 1;
	}
	if ((res = perform_search(inst, conn, vp_user_dn->strvalue, LDAP_SCOPE_BASE,
					filter, group_attrs,&result)) != RLM_MODULE_OK){
		DEBUG("rlm_ldap::ldap_groupcmp: Search returned error");
		ldap_release_conn(conn_id, inst->conns);
		return 1;
	}

	if ((msg = ldap_first_entry(conn->ld, result)) == NULL) {
		DEBUG("rlm_ldap::ldap_groupcmp: ldap_first_entry() failed");
		ldap_release_conn(conn_id,inst->conns);
		ldap_msgfree(result);
		return 1;
	}
	if ((vals = ldap_get_values(conn->ld, msg, inst->groupmemb_attr)) != NULL) {
		unsigned int i = 0;
		char found = 0;
		for (;i < ldap_count_values(vals);i++){
			if (strchr(vals[i],',') != NULL){
				/* This looks like a DN */
				LDAPMessage *gr_result = NULL;
				snprintf(filter,sizeof(filter), "(%s=%s)",
					inst->groupname_attr,
					(char *)check->strvalue);
				if ((res = perform_search(inst, conn, vals[i],
						LDAP_SCOPE_BASE, filter,
						attrs, &gr_result)) != RLM_MODULE_OK){
					if (res != RLM_MODULE_NOTFOUND){
						DEBUG("rlm_ldap::ldap_groupcmp: \
							Search returned error");
						ldap_value_free(vals);
						ldap_msgfree(result);
						ldap_release_conn(conn_id,inst->conns);
						return 1;
					}
				} else {
					ldap_msgfree(gr_result);
					found = 1;
					break;
				}
			} else {
				if (strcmp(vals[i],(char *)check->strvalue) == 0){
					found = 1;
					break;
				}
			}
		}
		ldap_value_free(vals);
		ldap_msgfree(result);
		if (found == 0){
			DEBUG("rlm_ldap::groupcmp: Group %s not found \
				or user not a member",
				(char *)check->strvalue);
			ldap_release_conn(conn_id,inst->conns);
			return 1;
		}
	} else {
			DEBUG("rlm_ldap::ldap_groupcmp: ldap_get_values() failed");
			ldap_msgfree(result);
			ldap_release_conn(conn_id,inst->conns);
			return 1;
	}

	DEBUG("rlm_ldap::ldap_groupcmp: User found in group %s",(char *)check->strvalue);
	ldap_release_conn(conn_id,inst->conns);

        return 0;
}

/*
 * ldap_xlat()
 * Do an xlat on an LDAP URL
 */

static int ldap_xlat(void *instance, REQUEST *request, char *fmt, char *out,
		     size_t freespace, RADIUS_ESCAPE_STRING func)
{
	char url[MAX_FILTER_STR_LEN];
	int res;
	int ret = 0;
	ldap_instance *inst = instance;
	LDAPURLDesc *ldap_url;
	LDAPMessage *result = NULL;
	LDAPMessage *msg = NULL;
	char **vals;
	int conn_id = -1;
	LDAP_CONN *conn;

	DEBUG("rlm_ldap: - ldap_xlat");
	if (!radius_xlat(url, sizeof(url), fmt, request, func)) {
		radlog (L_ERR, "rlm_ldap: Unable to create LDAP URL.\n");
		return 0;
	}
	if (!ldap_is_ldap_url(url)){
		radlog (L_ERR, "rlm_ldap: String passed does not look like an LDAP URL.\n");
		return 0;
	}
	if (ldap_url_parse(url,&ldap_url)){
		radlog (L_ERR, "rlm_ldap: LDAP URL parse failed.\n");
		return 0;
	}
	if (ldap_url->lud_attrs == NULL || ldap_url->lud_attrs[0] == NULL || \
		( ldap_url->lud_attrs[1] != NULL || ( ! strlen(ldap_url->lud_attrs[0]) || \
		! strcmp(ldap_url->lud_attrs[0],"*") ) ) ){
		radlog (L_ERR, "rlm_ldap: Invalid Attribute(s) request.\n");
		ldap_free_urldesc(ldap_url);
		return 0;
	}
	if (ldap_url->lud_host){
		if (strncmp(inst->server,ldap_url->lud_host,strlen(inst->server)) != 0 || \
				ldap_url->lud_port != inst->port){
			DEBUG("rlm_ldap: Requested server/port is not known to this module instance.");
			ldap_free_urldesc(ldap_url);
			return 0;
		}
	}
	if ((conn_id = ldap_get_conn(inst->conns,&conn,inst)) == -1){
		radlog(L_ERR, "rlm_ldap: All ldap connections are in use");
		ldap_free_urldesc(ldap_url);
		return 0;
	}
	if ((res = perform_search(inst, conn, ldap_url->lud_dn, ldap_url->lud_scope, ldap_url->lud_filter, ldap_url->lud_attrs, &result)) != RLM_MODULE_OK){
		if (res == RLM_MODULE_NOTFOUND){
			DEBUG("rlm_ldap: Search returned not found");
			ldap_free_urldesc(ldap_url);
			ldap_release_conn(conn_id,inst->conns);
			return 0;
		}
		DEBUG("rlm_ldap: Search returned error");
		ldap_free_urldesc(ldap_url);
		ldap_release_conn(conn_id,inst->conns);
		return 0;
	}
	if ((msg = ldap_first_entry(conn->ld, result)) == NULL){
		DEBUG("rlm_ldap: ldap_first_entry() failed");
		ldap_msgfree(result);
		ldap_free_urldesc(ldap_url);
		ldap_release_conn(conn_id,inst->conns);
		return 0;
	}
	if ((vals = ldap_get_values(conn->ld, msg, ldap_url->lud_attrs[0])) != NULL) {
		ret = strlen(vals[0]);
		if (ret > freespace){
			DEBUG("rlm_ldap: Insufficient string space");
			ldap_free_urldesc(ldap_url);
			ldap_value_free(vals);
			ldap_msgfree(result);
			ldap_release_conn(conn_id,inst->conns);
			return 0;
		}
		DEBUG("rlm_ldap: Adding attribute %s, value: %s",ldap_url->lud_attrs[0],vals[0]);
		strncpy(out,vals[0],ret);
		ldap_value_free(vals);
	}
	else
		ret = 0;

	ldap_msgfree(result);
	ldap_free_urldesc(ldap_url);
	ldap_release_conn(conn_id,inst->conns);

	DEBUG("rlm_ldap: - ldap_xlat end");

	return ret;
}


/******************************************************************************
 *
 *      Function: rlm_ldap_authorize
 *
 *      Purpose: Check if user is authorized for remote access
 *
 ******************************************************************************/
static int
ldap_authorize(void *instance, REQUEST * request)
{
	LDAPMessage	*result = NULL;
	LDAPMessage	*msg = NULL;
	LDAPMessage	*def_msg = NULL;
	LDAPMessage	*def_attr_msg = NULL;
	LDAPMessage	*def_result = NULL;
	LDAPMessage	*def_attr_result = NULL;
	ldap_instance	*inst = instance;
	char		*user_dn = NULL;
	char		filter[MAX_FILTER_STR_LEN];
	char		basedn[MAX_FILTER_STR_LEN];
	VALUE_PAIR	*check_tmp;
	VALUE_PAIR	*reply_tmp;
	int		res;
	VALUE_PAIR	**check_pairs, **reply_pairs;
	char		**vals;
	VALUE_PAIR      *module_fmsg_vp;
	VALUE_PAIR	*user_profile;
	char            module_fmsg[MAX_STRING_LEN];
	LDAP_CONN	*conn;
	int		conn_id = -1;

	DEBUG("rlm_ldap: - authorize");

	if (!request->username){
		radlog(L_AUTH, "rlm_ldap: Attribute \"User-Name\" is required for authentication.\n");
		return RLM_MODULE_INVALID;
	}

	check_pairs = &request->config_items;
	reply_pairs = &request->reply->vps;

	/*
	 * Check for valid input, zero length names not permitted
	 */
	if (request->username->strvalue == 0) {
		radlog(L_ERR, "rlm_ldap: zero length username not permitted\n");
		return RLM_MODULE_INVALID;
	}
	DEBUG("rlm_ldap: performing user authorization for %s",
	       request->username->strvalue);

	if (!radius_xlat(filter, sizeof(filter), inst->filter,
			 request, ldap_escape_func)) {
		radlog (L_ERR, "rlm_ldap: unable to create filter.\n");
		return RLM_MODULE_INVALID;
	}

	if (!radius_xlat(basedn, sizeof(basedn), inst->basedn,
			 request, ldap_escape_func)) {
		radlog (L_ERR, "rlm_ldap: unable to create basedn.\n");
		return RLM_MODULE_INVALID;
	}

	if ((conn_id = ldap_get_conn(inst->conns,&conn,inst)) == -1){
		radlog(L_ERR, "rlm_ldap: All ldap connections are in use");
		return RLM_MODULE_FAIL;
	}
	if ((res = perform_search(instance, conn, basedn, LDAP_SCOPE_SUBTREE, filter, inst->atts, &result)) != RLM_MODULE_OK) {
		DEBUG("rlm_ldap: search failed");
		if (res == RLM_MODULE_NOTFOUND){
			snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: User not found");
			module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
			pairadd(&request->packet->vps, module_fmsg_vp);
		}
		ldap_release_conn(conn_id,inst->conns);
		return (res);
	}
	if ((msg = ldap_first_entry(conn->ld, result)) == NULL) {
		DEBUG("rlm_ldap: ldap_first_entry() failed");
		ldap_msgfree(result);
		ldap_release_conn(conn_id,inst->conns);
		return RLM_MODULE_FAIL;
	}
	if ((user_dn = ldap_get_dn(conn->ld, msg)) == NULL) {
		DEBUG("rlm_ldap: ldap_get_dn() failed");
		ldap_msgfree(result);
		ldap_release_conn(conn_id,inst->conns);
		return RLM_MODULE_FAIL;
	}
	/*
	 * Adding new attribute containing DN for LDAP object associated with
	 * given username
	 */
	pairadd(&request->packet->vps, pairmake("Ldap-UserDn", user_dn, T_OP_EQ));
	ldap_memfree(user_dn);


	/* Remote access is controled by attribute of the user object */
	if (inst->access_attr) {
		if ((vals = ldap_get_values(conn->ld, msg, inst->access_attr)) != NULL) {
			if (inst->default_allow){
				DEBUG("rlm_ldap: checking if remote access for %s is allowed by %s", request->username->strvalue, inst->access_attr);
				if (!strncmp(vals[0], "FALSE", 5)) {
					DEBUG("rlm_ldap: dialup access disabled");
					snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: Access Attribute denies access");
					module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
					pairadd(&request->packet->vps, module_fmsg_vp);
					ldap_msgfree(result);
					ldap_value_free(vals);
					ldap_release_conn(conn_id,inst->conns);
					return RLM_MODULE_USERLOCK;
				}
				ldap_value_free(vals);
			}
			else{
				DEBUG("rlm_ldap: %s attribute exists - access denied by default", inst->access_attr);
				snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: Access Attribute denies access");
				module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
				pairadd(&request->packet->vps, module_fmsg_vp);
				ldap_msgfree(result);
				ldap_value_free(vals);
				ldap_release_conn(conn_id,inst->conns);
				return RLM_MODULE_USERLOCK;
			}
		} else {
			if (inst->default_allow){
				DEBUG("rlm_ldap: no %s attribute - access denied by default", inst->access_attr);
				snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: Access Attribute denies access");
				module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
				pairadd(&request->packet->vps, module_fmsg_vp);
				ldap_msgfree(result);
				ldap_release_conn(conn_id,inst->conns);
				return RLM_MODULE_USERLOCK;
			}
		}
	}

	/*
	 * Check for the default profile entry. If it exists then add the
	 * attributes it contains in the check and reply pairs
	 */

	user_profile = pairfind(request->config_items, PW_USER_PROFILE);
	if (inst->default_profile || user_profile){
		char *profile = inst->default_profile;

		strNcpy(filter,inst->base_filter,sizeof(filter));
		if (user_profile)
			profile = user_profile->strvalue;
		if (profile && strlen(profile)){
			if ((res = perform_search(instance, conn,
				profile, LDAP_SCOPE_BASE,
				filter, inst->atts, &def_result)) == RLM_MODULE_OK){
				if ((def_msg = ldap_first_entry(conn->ld,def_result))){
					if ((check_tmp = ldap_pairget(conn->ld,def_msg,inst->check_item_map,check_pairs,1))) {
						if (inst->do_xlat){
							pairxlatmove(request, check_pairs, &check_tmp);
							pairfree(&check_tmp);
						}
						else
							pairadd(check_pairs,check_tmp);
					}
					if ((reply_tmp = ldap_pairget(conn->ld,def_msg,inst->reply_item_map,reply_pairs,0))) {
						if (inst->do_xlat){
							pairxlatmove(request, reply_pairs, &reply_tmp);
							pairfree(&reply_tmp);
						}
						else
							pairadd(reply_pairs,reply_tmp);
					}
				}
				ldap_msgfree(def_result);
			} else
				DEBUG("rlm_ldap: default_profile/user-profile search failed");
		}
	}

	/*
	 * Check for the profile attribute. If it exists, we assume that it
	 * contains the DN of an entry containg a profile for the user. That
	 * way we can have different general profiles for various user groups
	 * (students,faculty,staff etc)
	 */

	if (inst->profile_attr){
		if ((vals = ldap_get_values(conn->ld, msg, inst->profile_attr)) != NULL) {
			unsigned int i=0;
			strNcpy(filter,inst->base_filter,sizeof(filter));
			while(vals[i] != NULL && strlen(vals[i])){
				if ((res = perform_search(instance, conn,
					vals[i], LDAP_SCOPE_BASE,
					filter, inst->atts, &def_attr_result)) == RLM_MODULE_OK){
					if ((def_attr_msg = ldap_first_entry(conn->ld,def_attr_result))){
						if ((check_tmp = ldap_pairget(conn->ld,def_attr_msg,inst->check_item_map,check_pairs,1))) {
							if (inst->do_xlat){
								pairxlatmove(request, check_pairs, &check_tmp);
								pairfree(&check_tmp);
							}
							else
								pairadd(check_pairs,check_tmp);
						}
						if ((reply_tmp = ldap_pairget(conn->ld,def_attr_msg,inst->reply_item_map,reply_pairs,0))) {
							if (inst->do_xlat){
								pairxlatmove(request, reply_pairs, &reply_tmp);
								pairfree(&reply_tmp);
							}
							else
								pairadd(reply_pairs,reply_tmp);
						}
					}
					ldap_msgfree(def_attr_result);
				} else
					DEBUG("rlm_ldap: profile_attribute search failed");
				i++;
			}
			ldap_value_free(vals);
		}
	}
	if (inst->passwd_attr && strlen(inst->passwd_attr)){
#ifdef NOVELL_UNIVERSAL_PASSWORD
		if(strcasecmp(inst->passwd_attr,"nspmPassword")!= 0){
#endif
		VALUE_PAIR *passwd_item;

		if ((passwd_item = pairfind(request->config_items, PW_PASSWORD)) == NULL){
			char **passwd_vals;
			char *passwd_val = NULL;
			int passwd_len;

			if ((passwd_vals = ldap_get_values(conn->ld,msg,inst->passwd_attr)) != NULL){
				unsigned int i=0;
				while(passwd_vals[i] != NULL){
					if (strlen(passwd_vals[i])){
						passwd_val = passwd_vals[i];

						if (inst->passwd_hdr && strlen(inst->passwd_hdr)){
							passwd_val = strstr(passwd_val,inst->passwd_hdr);
							if (passwd_val != NULL)
								passwd_val += strlen(inst->passwd_hdr);
							else
								DEBUG("rlm_ldap: Password header not found in password %s for user %s", passwd_vals[0],request->username->strvalue);
						}
						if (passwd_val){
							if ((passwd_item = paircreate(PW_PASSWORD,PW_TYPE_STRING)) == NULL){
								radlog(L_ERR|L_CONS, "no memory");
								ldap_value_free(passwd_vals);
								ldap_msgfree(result);
								ldap_release_conn(conn_id,inst->conns);
								return RLM_MODULE_FAIL;
							}
							passwd_len = strlen(passwd_val);
							strncpy(passwd_item->strvalue,passwd_val,MAX_STRING_LEN - 1);
							passwd_item->length = (passwd_len > (MAX_STRING_LEN - 1)) ? (MAX_STRING_LEN - 1) : passwd_len;
							pairadd(&request->config_items,passwd_item);
							DEBUG("rlm_ldap: Added password %s in check items",passwd_item->strvalue);
						}
					}
					i++;
				}
				ldap_value_free(passwd_vals);
			}
		}
#ifdef NOVELL_UNIVERSAL_PASSWORD
  		}
		else{
		/*
	 	* Read Universal Password from eDirectory
	 	*/
			VALUE_PAIR	*passwd_item;
			VALUE_PAIR	*vp_user_dn;
			int		passwd_len;
			char		*universal_password = NULL;
			int		universal_password_len = UNIVERSAL_PASS_LEN;
			char		*passwd_val = NULL;

			res = 0;

			if ((passwd_item = pairfind(request->config_items, PW_PASSWORD)) == NULL){
			
				universal_password = rad_malloc(universal_password_len);
				memset(universal_password, 0, universal_password_len);

				vp_user_dn = pairfind(request->packet->vps,PW_LDAP_USERDN);
				res = nmasldap_get_password(conn->ld,vp_user_dn->strvalue,&universal_password_len,universal_password);

				if (res == 0){
					passwd_val = universal_password;

					if (inst->passwd_hdr && strlen(inst->passwd_hdr)){
						passwd_val = strstr(passwd_val,inst->passwd_hdr);

						if (passwd_val != NULL)
							passwd_val += strlen((char*)inst->passwd_hdr);
						else
							DEBUG("rlm_ldap: Password header not found in password %s for user %s ",passwd_val,request->username->strvalue);
					}

					if (passwd_val){
						if ((passwd_item = paircreate(PW_PASSWORD,PW_TYPE_STRING)) == NULL){
							radlog(L_ERR, "rlm_ldap: Could not allocate memory. Aborting.");
                                                	ldap_msgfree(result);
							ldap_release_conn(conn_id,inst->conns);
 							memset(universal_password, 0, universal_password_len);
							free(universal_password);
							return RLM_MODULE_FAIL;
						}

						passwd_len = strlen(passwd_val);
						strncpy(passwd_item->strvalue,passwd_val,MAX_STRING_LEN - 1);
						passwd_item->length = (passwd_len > (MAX_STRING_LEN - 1)) ? (MAX_STRING_LEN - 1) : passwd_len;
						pairadd(&request->config_items,passwd_item);

#ifdef NOVELL
						{
							DICT_ATTR *dattr;
							VALUE_PAIR	*vp_inst, *vp_apc;
							int inst_attr, apc_attr;

							dattr = dict_attrbyname("LDAP-Instance");
							inst_attr = dattr->attr;
							dattr = dict_attrbyname("eDir-APC");
							apc_attr = dattr->attr;

							vp_inst = pairfind(request->config_items, inst_attr);
							if(vp_inst == NULL){
								/*
								 * The authorize method of no other LDAP module instance has
								 * processed this request.
								 */
								if ((vp_inst = paircreate(inst_attr, PW_TYPE_STRING)) == NULL){
									radlog(L_ERR, "rlm_ldap: Could not allocate memory. Aborting.");
									ldap_msgfree(result);
									ldap_release_conn(conn_id, inst->conns);
									memset(universal_password, 0, universal_password_len);
									free(universal_password);
									return RLM_MODULE_FAIL;
								}
								strcpy(vp_inst->strvalue, inst->xlat_name);
								vp_inst->length = strlen(vp_inst->strvalue);
								pairadd(&request->config_items, vp_inst);

								/*
								 * Inform the authenticate / post-auth method about the presence
								 * of UP in the config items list and whether eDirectory account
								 * policy check is to be performed or not.
								 */
								if ((vp_apc = paircreate(apc_attr, PW_TYPE_INTEGER)) == NULL){
									radlog(L_ERR, "rlm_ldap: Could not allocate memory. Aborting.");
									ldap_msgfree(result);
									ldap_release_conn(conn_id, inst->conns);
									memset(universal_password, 0, universal_password_len);
									free(universal_password);
									return RLM_MODULE_FAIL;
								}

								if(!inst->edir_account_policy_check){
									/* Do nothing */
									strcpy(vp_apc->strvalue, "1");
								}else{
									/* Perform eDirectory account-policy check */
									strcpy(vp_apc->strvalue, "2");
								}
								vp_apc->length = 1;
								pairadd(&request->config_items, vp_apc);
							}
						}
#endif

						DEBUG("rlm_ldap: Added the eDirectory password in check items");
					}
				}
				else {
					DEBUG("rlm_ldap: Error reading Universal Password.Return Code = %d",res);
				}

				memset(universal_password, 0, universal_password_len);
				free(universal_password);
			}
		}			
#endif

	}



	DEBUG("rlm_ldap: looking for check items in directory...");

	if ((check_tmp = ldap_pairget(conn->ld, msg, inst->check_item_map,check_pairs,1)) != NULL) {
		if (inst->do_xlat){
			pairxlatmove(request, check_pairs, &check_tmp);
			pairfree(&check_tmp);
		}
		else
			pairadd(check_pairs,check_tmp);
	}


	DEBUG("rlm_ldap: looking for reply items in directory...");


	if ((reply_tmp = ldap_pairget(conn->ld, msg, inst->reply_item_map,reply_pairs,0)) != NULL) {
		if (inst->do_xlat){
			pairxlatmove(request, reply_pairs, &reply_tmp);
			pairfree(&reply_tmp);
		}
		else
			pairadd(reply_pairs,reply_tmp);
	}

       if (inst->do_comp && paircmp(request,request->packet->vps,*check_pairs,reply_pairs) != 0){
#ifdef NOVELL
		/* Don't perform eDirectory APC if RADIUS authorize fails */
		int apc_attr;
		VALUE_PAIR *vp_apc;
		DICT_ATTR *dattr;

		dattr = dict_attrbyname("eDir-APC");
		apc_attr = dattr->attr;

		vp_apc = pairfind(request->config_items, apc_attr);
		if(vp_apc)
			vp_apc->strvalue[0] = '1';
#endif

		DEBUG("rlm_ldap: Pairs do not match. Rejecting user.");
		snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: Pairs do not match");
		module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
		pairadd(&request->packet->vps, module_fmsg_vp);
		ldap_msgfree(result);
		ldap_release_conn(conn_id,inst->conns);

		return RLM_MODULE_REJECT;
	}

	/*
 	 * Module should default to LDAP authentication if no Auth-Type
	 * specified.  Note that we do this ONLY if configured, AND we
	 * set the Auth-Type to our module name, which allows multiple
	 * ldap instances to work.
	 */
	if (inst->set_auth_type &&
	    (pairfind(*check_pairs, PW_AUTH_TYPE) == NULL) &&
	    request->password &&
	    (request->password->attribute == PW_USER_PASSWORD)) {
		pairadd(check_pairs, pairmake("Auth-Type", inst->xlat_name, T_OP_EQ));
		DEBUG("rlm_ldap: Setting Auth-Type = %s", inst->xlat_name);
	}

	DEBUG("rlm_ldap: user %s authorized to use remote access",
	      request->username->strvalue);
	ldap_msgfree(result);
	ldap_release_conn(conn_id,inst->conns);

	return RLM_MODULE_OK;
}

/*****************************************************************************
 *
 *	Function: rlm_ldap_authenticate
 *
 *	Purpose: Check the user's password against ldap database
 *
 *****************************************************************************/
static int
ldap_authenticate(void *instance, REQUEST * request)
{
	LDAP           *ld_user;
	LDAPMessage    *result, *msg;
	ldap_instance  *inst = instance;
	char           *user_dn, *attrs[] = {"uid", NULL};
	char		filter[MAX_FILTER_STR_LEN];
	char		basedn[MAX_FILTER_STR_LEN];
	int             res;
	VALUE_PAIR     *vp_user_dn;
	VALUE_PAIR      *module_fmsg_vp;
	char            module_fmsg[MAX_STRING_LEN];
	LDAP_CONN	*conn;
	int		conn_id = -1;
#ifdef NOVELL
	char		*err = NULL;
#endif

	DEBUG("rlm_ldap: - authenticate");

	/*
	 * Ensure that we're being passed a plain-text password, and not
	 * anything else.
	 */

	if (!request->username) {
		radlog(L_AUTH, "rlm_ldap: Attribute \"User-Name\" is required for authentication.\n");
		return RLM_MODULE_INVALID;
	}

	if (!request->password){
		radlog(L_AUTH, "rlm_ldap: Attribute \"User-Password\" is required for authentication.");
		return RLM_MODULE_INVALID;
	}

	if(request->password->attribute != PW_PASSWORD) {
		radlog(L_AUTH, "rlm_ldap: Attribute \"User-Password\" is required for authentication. Cannot use \"%s\".", request->password->name);
		return RLM_MODULE_INVALID;
	}

	if (request->password->length == 0) {
		snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: empty password supplied");
		module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
		pairadd(&request->packet->vps, module_fmsg_vp);
		return RLM_MODULE_INVALID;
	}

	/*
	 * Check that we don't have any failed connections. If we do there's no real need
	 * of runing. Also give it another chance if we have a lot of failed connections.
	 */
	if (inst->failed_conns > MAX_FAILED_CONNS_END)
		inst->failed_conns = 0;
	if (inst->failed_conns > MAX_FAILED_CONNS_START){
		inst->failed_conns++;
		return RLM_MODULE_FAIL;
	}


	DEBUG("rlm_ldap: login attempt by \"%s\" with password \"%s\"",
	       request->username->strvalue, request->password->strvalue);

	while((vp_user_dn = pairfind(request->packet->vps, PW_LDAP_USERDN)) == NULL) {
		if (!radius_xlat(filter, sizeof(filter), inst->filter,
				request, ldap_escape_func)) {
			radlog (L_ERR, "rlm_ldap: unable to create filter.\n");
			return RLM_MODULE_INVALID;
		}

		if (!radius_xlat(basedn, sizeof(basedn), inst->basedn,
		 		request, ldap_escape_func)) {
			radlog (L_ERR, "rlm_ldap: unable to create basedn.\n");
			return RLM_MODULE_INVALID;
		}

		if ((conn_id = ldap_get_conn(inst->conns,&conn,inst)) == -1){
			radlog(L_ERR, "rlm_ldap: All ldap connections are in use");
			return RLM_MODULE_FAIL;
		}
		if ((res = perform_search(instance, conn, basedn, LDAP_SCOPE_SUBTREE, filter, attrs, &result)) != RLM_MODULE_OK) {
			if (res == RLM_MODULE_NOTFOUND){
				snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: User not found");
				module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
				pairadd(&request->packet->vps, module_fmsg_vp);
			}
			ldap_release_conn(conn_id,inst->conns);
			return (res);
		}
		if ((msg = ldap_first_entry(conn->ld, result)) == NULL) {
			ldap_msgfree(result);
			ldap_release_conn(conn_id,inst->conns);
			return RLM_MODULE_FAIL;
		}
		if ((user_dn = ldap_get_dn(conn->ld, msg)) == NULL) {
			DEBUG("rlm_ldap: ldap_get_dn() failed");
			ldap_msgfree(result);
			ldap_release_conn(conn_id,inst->conns);
			return RLM_MODULE_FAIL;
		}
		ldap_release_conn(conn_id,inst->conns);
		pairadd(&request->packet->vps, pairmake("Ldap-UserDn", user_dn, T_OP_EQ));
		ldap_memfree(user_dn);
		ldap_msgfree(result);
	}

	user_dn = vp_user_dn->strvalue;

	DEBUG("rlm_ldap: user DN: %s", user_dn);

#ifndef NOVELL
	ld_user = ldap_connect(instance, user_dn, request->password->strvalue,
			       1, &res, NULL);
#else

	ld_user = ldap_connect(instance, user_dn, request->password->strvalue,
			1, &res, &err);

	if(err != NULL){
		/* 'err' contains the LDAP connection error description */
		DEBUG("rlm_ldap: %s", err);
		pairadd(&request->reply->vps, pairmake("Reply-Message", err, T_OP_EQ));
		ldap_memfree((void *)err);
	}

	/* Don't perform eDirectory APC again after attempting to bind here. */
	{
		int apc_attr;
		DICT_ATTR *dattr;
		VALUE_PAIR *vp_apc;

		dattr = dict_attrbyname("eDir-APC");
		apc_attr = dattr->attr;
		vp_apc = pairfind(request->config_items, apc_attr);
		if(vp_apc && vp_apc->strvalue[0] == '2')
			vp_apc->strvalue[0] = '3';
	}
#endif

	if (ld_user == NULL){
		if (res == RLM_MODULE_REJECT){
			inst->failed_conns = 0;
			snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: Bind as user failed");
			module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
			pairadd(&request->packet->vps, module_fmsg_vp);
		}
		if (res == RLM_MODULE_FAIL){
			DEBUG("rlm_ldap: ldap_connect() failed");
			inst->failed_conns++;
		}
		return (res);
	}

	DEBUG("rlm_ldap: user %s authenticated succesfully",
	      request->username->strvalue);
	ldap_unbind_s(ld_user);
	inst->failed_conns = 0;

	return RLM_MODULE_OK;
}

#ifdef NOVELL
/*****************************************************************************
 *
 *	Function: rlm_ldap_postauth
 *
 *	Purpose: Perform eDirectory account policy check and failed-login reporting
 *	to eDirectory.
 *
 *****************************************************************************/
static int
ldap_postauth(void *instance, REQUEST * request)
{
	int res = RLM_MODULE_FAIL;
	int inst_attr, apc_attr;
	char password[UNIVERSAL_PASS_LEN];
	ldap_instance  *inst = instance;
	LDAP_CONN	*conn;
	VALUE_PAIR *vp_inst, *vp_apc;
	DICT_ATTR *dattr;

	dattr = dict_attrbyname("LDAP-Instance");
	inst_attr = dattr->attr;
	dattr = dict_attrbyname("eDir-APC");
	apc_attr = dattr->attr;

	vp_inst = pairfind(request->config_items, inst_attr);

	/*
	 * Check if the password in the config items list is the user's UP which has
	 * been read in the authorize method of this instance of the LDAP module.
	 */
	if((vp_inst == NULL) || strcmp(vp_inst->strvalue, inst->xlat_name))
		return RLM_MODULE_NOOP;

	vp_apc = pairfind(request->config_items, apc_attr);

	switch(vp_apc->strvalue[0]){
		case '1':
			/* Account policy check not enabled */
		case '3':
			/* Account policy check has been completed */
			res = RLM_MODULE_NOOP;
			break;
		case '2':
			{
				int err, conn_id = -1;
				char *error_msg = NULL;
				VALUE_PAIR *vp_fdn, *vp_pwd;
				DICT_ATTR *da;

				if(request->reply->code == PW_AUTHENTICATION_REJECT){
					/* Bind to eDirectory as the RADIUS user with a wrong password. */
					vp_pwd = pairfind(request->config_items, PW_PASSWORD);
					strcpy(password, vp_pwd->strvalue);
					if(strlen(password) > 0){
						if(password[0] != 'a'){
							password[0] = 'a';
						}else{
							password[0] = 'b';
						}
					}else{
						strcpy(password, "dummy_password");
					}
					res = RLM_MODULE_REJECT;
				}else{
					/* Bind to eDirectory as the RADIUS user using the user's UP */
					vp_pwd = pairfind(request->config_items, PW_PASSWORD);
					if(vp_pwd == NULL){
						DEBUG("rlm_ldap: User's Universal Password not in config items list.");
						return RLM_MODULE_FAIL;
					}
					strcpy(password, vp_pwd->strvalue);
				}

				if ((da = dict_attrbyname("Ldap-UserDn")) == NULL) {
					DEBUG("rlm_ldap: Attribute for user FDN not found in dictionary. Unable to proceed");
					return RLM_MODULE_FAIL;
				}

				vp_fdn = pairfind(request->packet->vps, da->attr);
				if(vp_fdn == NULL){
					DEBUG("rlm_ldap: User's FQDN not in config items list.");
					return RLM_MODULE_FAIL;
				}

				if ((conn_id = ldap_get_conn(inst->apc_conns, &conn, inst)) == -1){
					radlog(L_ERR, "rlm_ldap: All ldap connections are in use");
					return RLM_MODULE_FAIL;
				}

				/*
				 * If there is an existing LDAP connection to the directory, bind over
				 * it. Otherwise, establish a new connection.
				 */
postauth_reconnect:
				if (!conn->bound || conn->ld == NULL) {
					DEBUG2("rlm_ldap: attempting LDAP reconnection");
					if (conn->ld){
						DEBUG2("rlm_ldap: closing existing LDAP connection");
						ldap_unbind_s(conn->ld);
					}
					if ((conn->ld = ldap_connect(instance, (char *)vp_fdn->strvalue, password, 0, &res, &error_msg)) == NULL) {
						radlog(L_ERR, "rlm_ldap: eDirectory account policy check failed.");

						if(error_msg != NULL){
							DEBUG("rlm_ldap: %s", error_msg);
							pairadd(&request->reply->vps, pairmake("Reply-Message", error_msg, T_OP_EQ));
							ldap_memfree((void *)error_msg);
						}

						vp_apc->strvalue[0] = '3';
						ldap_release_conn(conn_id, inst->apc_conns);
						return RLM_MODULE_REJECT;
					}
					conn->bound = 1;
				}else if((err = ldap_simple_bind_s(conn->ld, (char *)vp_fdn->strvalue, password)) != LDAP_SUCCESS){
					if(err == LDAP_SERVER_DOWN){
						conn->bound = 0;
						goto postauth_reconnect;
					}
					DEBUG("rlm_ldap: eDirectory account policy check failed.");
					ldap_get_option(conn->ld, LDAP_OPT_ERROR_STRING, &error_msg);
					if(error_msg != NULL){
						DEBUG("rlm_ldap: %s", error_msg);
						pairadd(&request->reply->vps, pairmake("Reply-Message", error_msg, T_OP_EQ));
						ldap_memfree((void *)error_msg);
					}
					vp_apc->strvalue[0] = '3';
					ldap_release_conn(conn_id, inst->apc_conns);
					return RLM_MODULE_REJECT;
				}
				vp_apc->strvalue[0] = '3';
				ldap_release_conn(conn_id, inst->apc_conns);
				return RLM_MODULE_OK;
			}
	}
	return res;
}
#endif

static LDAP    *
ldap_connect(void *instance, const char *dn, const char *password, int auth, int *result, char **err)
{
	ldap_instance  *inst = instance;
	LDAP           *ld = NULL;
	int             msgid, rc, ldap_version;
	int		ldap_errno = 0;
	LDAPMessage    *res;

	if (inst->is_url){
#ifdef HAVE_LDAP_INITIALIZE
		DEBUG("rlm_ldap: (re)connect to %s, authentication %d", inst->server, auth);
		if (ldap_initialize(&ld, inst->server) != LDAP_SUCCESS) {
			radlog(L_ERR, "rlm_ldap: ldap_initialize() failed");
			*result = RLM_MODULE_FAIL;
			return (NULL);
		}
#endif
	}
	else{
		DEBUG("rlm_ldap: (re)connect to %s:%d, authentication %d", inst->server, inst->port, auth);
		if ((ld = ldap_init(inst->server, inst->port)) == NULL) {
			radlog(L_ERR, "rlm_ldap: ldap_init() failed");
			*result = RLM_MODULE_FAIL;
			return (NULL);
		}
	}
	if (ldap_set_option(ld, LDAP_OPT_NETWORK_TIMEOUT, (void *) &(inst->net_timeout)) != LDAP_OPT_SUCCESS) {
		radlog(L_ERR, "rlm_ldap: Could not set LDAP_OPT_NETWORK_TIMEOUT %ld.%ld", inst->net_timeout.tv_sec, inst->net_timeout.tv_usec);
	}
	if (ldap_set_option(ld, LDAP_OPT_TIMELIMIT, (void *) &(inst->timelimit)) != LDAP_OPT_SUCCESS) {
		radlog(L_ERR, "rlm_ldap: Could not set LDAP_OPT_TIMELIMIT %d", inst->timelimit);
	}
	if (inst->ldap_debug && ldap_set_option(NULL, LDAP_OPT_DEBUG_LEVEL, &(inst->ldap_debug)) != LDAP_OPT_SUCCESS) {
		radlog(L_ERR, "rlm_ldap: Could not set LDAP_OPT_DEBUG_LEVEL %d", inst->ldap_debug);
	}
	ldap_version = LDAP_VERSION3;
	if (ldap_set_option(ld, LDAP_OPT_PROTOCOL_VERSION, &ldap_version) != LDAP_OPT_SUCCESS) {
		radlog(L_ERR, "rlm_ldap: Could not set LDAP version to V3");
	}
#ifdef HAVE_LDAP_START_TLS
        if(inst->tls_mode) {
		DEBUG("rlm_ldap: setting TLS mode to %d", inst->tls_mode);
        	if(ldap_set_option(ld, LDAP_OPT_X_TLS,
	  	           (void *) &(inst->tls_mode)) != LDAP_OPT_SUCCESS) {
			ldap_get_option(ld, LDAP_OPT_ERROR_NUMBER, &ldap_errno);
 			radlog(L_ERR, "rlm_ldap: could not set LDAP_OPT_X_TLS option %s", ldap_err2string(ldap_errno));
		}
	}

	if(inst->tls_cacertfile != NULL) {
		DEBUG("rlm_ldap: setting TLS CACert File to %s", inst->tls_cacertfile);

		if ( ldap_set_option( NULL, LDAP_OPT_X_TLS_CACERTFILE,
							  (void *) inst->tls_cacertfile )
			 != LDAP_OPT_SUCCESS) {
			radlog(L_ERR, "rlm_ldap: could not set "
				   "LDAP_OPT_X_TLS_CACERTFILE option to %s", inst->tls_cacertfile);
		}
	}

	if(inst->tls_cacertdir != NULL) {
		DEBUG("rlm_ldap: setting TLS CACert Directory to %s", inst->tls_cacertdir);

		if ( ldap_set_option( NULL, LDAP_OPT_X_TLS_CACERTDIR,
							  (void *) inst->tls_cacertdir )
			 != LDAP_OPT_SUCCESS) {
			radlog(L_ERR, "rlm_ldap: could not set "
				   "LDAP_OPT_X_TLS_CACERTDIR option to %s", inst->tls_cacertdir);
		}
	}

	if( strcmp( TLS_DEFAULT_VERIFY, inst->tls_require_cert ) != 0 ) {
		DEBUG("rlm_ldap: setting TLS Require Cert to %s",
			  inst->tls_require_cert);
	}


#ifdef HAVE_LDAP_INT_TLS_CONFIG

	if ( ldap_int_tls_config( NULL, LDAP_OPT_X_TLS_REQUIRE_CERT,
							  (inst->tls_require_cert) )
		 != LDAP_OPT_SUCCESS) {
		radlog(L_ERR, "rlm_ldap: could not set "
			   "LDAP_OPT_X_TLS_REQUIRE_CERT option to %s",
			   inst->tls_require_cert);
	}

#endif

	if(inst->tls_certfile != NULL) {
		DEBUG("rlm_ldap: setting TLS Cert File to %s", inst->tls_certfile);

		if ( ldap_set_option( NULL, LDAP_OPT_X_TLS_CERTFILE,
							  (void *) inst->tls_certfile )
			 != LDAP_OPT_SUCCESS) {
			radlog(L_ERR, "rlm_ldap: could not set "
				   "LDAP_OPT_X_TLS_CERTFILE option to %s",
				   inst->tls_certfile);
		}
	}

	if(inst->tls_keyfile != NULL) {
		DEBUG("rlm_ldap: setting TLS Key File to %s", inst->tls_keyfile);

		if ( ldap_set_option( NULL, LDAP_OPT_X_TLS_KEYFILE,
							  (void *) inst->tls_keyfile )
			 != LDAP_OPT_SUCCESS) {
			radlog(L_ERR, "rlm_ldap: could not set "
				   "LDAP_OPT_X_TLS_KEYFILE option to %s",
				   inst->tls_keyfile);
		}
	}

	if(inst->tls_randfile != NULL) {
		DEBUG("rlm_ldap: setting TLS Key File to %s", inst->tls_randfile);

		if ( ldap_set_option( NULL, LDAP_OPT_X_TLS_RANDOM_FILE,
							  (void *) inst->tls_randfile )
			 != LDAP_OPT_SUCCESS) {
			radlog(L_ERR, "rlm_ldap: could not set "
				   "LDAP_OPT_X_TLS_RANDOM_FILE option to %s",
				   inst->tls_randfile);
		}
	}
	if (inst->start_tls) {
		DEBUG("rlm_ldap: starting TLS");
		rc = ldap_start_tls_s(ld, NULL, NULL);
		if (rc != LDAP_SUCCESS) {
			DEBUG("rlm_ldap: ldap_start_tls_s()");
			ldap_get_option(ld, LDAP_OPT_ERROR_NUMBER, &ldap_errno);
			radlog(L_ERR, "rlm_ldap: could not start TLS %s", ldap_err2string(ldap_errno));
			*result = RLM_MODULE_FAIL;
			ldap_unbind_s(ld);
			return (NULL);
		}
	}
#endif /* HAVE_LDAP_START_TLS */

	if (inst->is_url){
		DEBUG("rlm_ldap: bind as %s/%s to %s", dn, password, inst->server);
	}
	else{
		DEBUG("rlm_ldap: bind as %s/%s to %s:%d", dn, password, inst->server, inst->port);
	}
	msgid = ldap_bind(ld, dn, password,LDAP_AUTH_SIMPLE);
	if (msgid == -1) {
		ldap_get_option(ld, LDAP_OPT_ERROR_NUMBER, &ldap_errno);
		if(err != NULL){
			ldap_get_option(ld, LDAP_OPT_ERROR_STRING, err);
		}
		if (inst->is_url) {
			radlog(L_ERR, "rlm_ldap: %s bind to %s failed: %s",
			 	dn, inst->server, ldap_err2string(ldap_errno));
		} else {
			radlog(L_ERR, "rlm_ldap: %s bind to %s:%d failed: %s",
			 	dn, inst->server, inst->port,
			 	ldap_err2string(ldap_errno));
		}
		*result = RLM_MODULE_FAIL;
		ldap_unbind_s(ld);
		return (NULL);
	}
	DEBUG("rlm_ldap: waiting for bind result ...");

	rc = ldap_result(ld, msgid, 1, &(inst->timeout), &res);

	if(rc < 1) {
		DEBUG("rlm_ldap: ldap_result()");
		ldap_get_option(ld, LDAP_OPT_ERROR_NUMBER, &ldap_errno);
		if(err != NULL){
			ldap_get_option(ld, LDAP_OPT_ERROR_STRING, err);
		}
		if (inst->is_url) {
			radlog(L_ERR, "rlm_ldap: %s bind to %s failed: %s",
				dn, inst->server, (rc == 0) ? "timeout" : ldap_err2string(ldap_errno));
		} else {
			radlog(L_ERR, "rlm_ldap: %s bind to %s:%d failed: %s",
				dn, inst->server, inst->port,
				(rc == 0) ? "timeout" : ldap_err2string(ldap_errno));
		}
		*result = RLM_MODULE_FAIL;
		ldap_unbind_s(ld);
		return (NULL);
	}
	ldap_errno = ldap_result2error(ld, res, 1);
	switch (ldap_errno) {
	case LDAP_SUCCESS:
		DEBUG("rlm_ldap: Bind was successful");
		*result = RLM_MODULE_OK;
		break;

	case LDAP_INVALID_CREDENTIALS:
		if (auth){
			DEBUG("rlm_ldap: Bind failed with invalid credentials");
			*result = RLM_MODULE_REJECT;
		}
		else {
			radlog(L_ERR, "rlm_ldap: LDAP login failed: check identity, password settings in ldap section of radiusd.conf");
			*result = RLM_MODULE_FAIL;
		}
		if(err != NULL){
			ldap_get_option(ld, LDAP_OPT_ERROR_STRING, err);
		}
		break;

	default:
		if (inst->is_url)
			radlog(L_ERR,"rlm_ldap: %s bind to %s failed %s",
				dn, inst->server, ldap_err2string(ldap_errno));
		else
			radlog(L_ERR,"rlm_ldap: %s bind to %s:%d failed %s",
				dn, inst->server, inst->port,
				ldap_err2string(ldap_errno));
		*result = RLM_MODULE_FAIL;
		if(err != NULL){
			ldap_get_option(ld, LDAP_OPT_ERROR_STRING, err);
		}
	}

	if (*result != RLM_MODULE_OK) {
		ldap_unbind_s(ld);
		ld = NULL;
	}
	return ld;
}

/*****************************************************************************
 *
 *	Detach from the LDAP server and cleanup internal state.
 *
 *****************************************************************************/
static int
ldap_detach(void *instance)
{
	ldap_instance  *inst = instance;
	TLDAP_RADIUS *pair, *nextpair;

	if (inst->server)
		free((char *) inst->server);
	if (inst->login)
		free((char *) inst->login);
	if (inst->password)
		free((char *) inst->password);
	if (inst->basedn)
		free((char *) inst->basedn);
	if (inst->dictionary_mapping)
		free(inst->dictionary_mapping);
	if (inst->filter)
		free((char *) inst->filter);
	if (inst->base_filter)
		free((char *) inst->base_filter);
	if (inst->passwd_hdr)
		free((char *) inst->passwd_hdr);
	if (inst->passwd_attr)
		free((char *) inst->passwd_attr);
	if (inst->groupname_attr)
		free((char *) inst->groupname_attr);
	if (inst->groupmemb_filt)
		free((char *) inst->groupmemb_filt);
	if (inst->groupmemb_attr)
		free((char *) inst->groupmemb_attr);
	if (inst->access_attr)
		free((char *) inst->access_attr);
	if (inst->profile_attr)
		free((char *) inst->profile_attr);
	if (inst->conns){
		int i=0;

		for(;i<inst->num_conns;i++){
			if (inst->conns[i].ld){
				ldap_unbind_s(inst->conns[i].ld);
			}
			pthread_mutex_destroy(&inst->conns[i].mutex);
		}
		free(inst->conns);
	}

#ifdef NOVELL
	if (inst->apc_conns){ 
		int i;

		for(i = 0; i < inst->num_conns; i++){
			if (inst->apc_conns[i].ld){
				ldap_unbind_s(inst->apc_conns[i].ld);
			}
			pthread_mutex_destroy(&inst->apc_conns[i].mutex);
		}
		free(inst->apc_conns);
	}
#endif

	pair = inst->check_item_map;

	while (pair != NULL) {
		nextpair = pair->next;
		free(pair->attr);
		free(pair->radius_attr);
		free(pair);
		pair = nextpair;
	}

	pair = inst->reply_item_map;

	while (pair != NULL) {
		nextpair = pair->next;
		free(pair->attr);
		free(pair->radius_attr);
		free(pair);
		pair = nextpair;
	}

	if (inst->atts)
		free(inst->atts);

	paircompare_unregister(PW_LDAP_GROUP, ldap_groupcmp);
	xlat_unregister(inst->xlat_name,ldap_xlat);
	free(inst->xlat_name);

	free(inst);

	return 0;
}

#ifdef FIELDCPY
static void
fieldcpy(char *string, char **uptr)
{
	char           *ptr;

	ptr = *uptr;
	while (*ptr == ' ' || *ptr == '\t') {
		ptr++;
	}
	if (*ptr == '"') {
		ptr++;
		while (*ptr != '"' && *ptr != '\0' && *ptr != '\n') {
			*string++ = *ptr++;
		}
		*string = '\0';
		if (*ptr == '"') {
			ptr++;
		}
		*uptr = ptr;
		return;
	}
	while (*ptr != ' ' && *ptr != '\t' && *ptr != '\0' && *ptr != '\n' &&
	       *ptr != '=' && *ptr != ',') {
		*string++ = *ptr++;
	}
	*string = '\0';
	*uptr = ptr;
	return;
}
#endif
/*****************************************************************************
 *	Get RADIUS attributes from LDAP object
 *	( according to draft-adoba-radius-05.txt
 *	  <http://www.ietf.org/internet-drafts/draft-adoba-radius-05.txt> )
 *
 *****************************************************************************/

static VALUE_PAIR *
ldap_pairget(LDAP * ld, LDAPMessage * entry,
	     TLDAP_RADIUS * item_map, VALUE_PAIR **pairs,char is_check)
{
	char          **vals;
	int             vals_count;
	int             vals_idx;
	char           *ptr;
	char	       *value;
	TLDAP_RADIUS   *element;
	LRAD_TOKEN      token, operator;
	int             is_generic_attribute;
	char		buf[MAX_STRING_LEN];
	VALUE_PAIR     *pairlist = NULL;
	VALUE_PAIR     *newpair = NULL;
	char		do_xlat = FALSE;

	/*
	 *	check if there is a mapping from this LDAP attribute
	 *	to a RADIUS attribute
	 */
	for (element = item_map; element != NULL; element = element->next) {
		/*
		 *	No mapping, skip it.
		 */
		if ((vals = ldap_get_values(ld,entry,element->attr)) == NULL)
			continue;

		/*
		 *	Check whether this is a one-to-one-mapped ldap
		 *	attribute or a generic attribute and set flag
		 *	accordingly.
		 */
		if (strcasecmp(element->radius_attr, GENERIC_ATTRIBUTE_ID)==0)
			is_generic_attribute = 1;
		else
			is_generic_attribute = 0;

		/*
		 *	Find out how many values there are for the
		 *	attribute and extract all of them.
		 */
		vals_count = ldap_count_values(vals);

		for (vals_idx = 0; vals_idx < vals_count; vals_idx++) {
			value = vals[vals_idx];

			if (is_generic_attribute) {
				/*
				 *	This is a generic attribute.
				 */
				LRAD_TOKEN dummy; /* makes pairread happy */

				/* not sure if using pairread here is ok ... */
				if ( (newpair = pairread(&value, &dummy)) != NULL) {
					DEBUG("rlm_ldap: extracted attribute %s from generic item %s",
					      newpair->name, vals[vals_idx]);
					pairadd(&pairlist, newpair);
				} else {
					radlog(L_ERR, "rlm_ldap: parsing %s failed: %s",
					       element->attr, vals[vals_idx]);
				}
			} else {
				/*
				 *	This is a one-to-one-mapped attribute
				 */
				ptr = value;
				operator = gettoken(&ptr, buf, sizeof(buf));
				if (operator < T_EQSTART || operator > T_EQEND) {
					/* no leading operator found */
					if (is_check)
						operator = T_OP_CMP_EQ;
					else
						operator = T_OP_EQ;
				} else {
					/* the value is after the operator */
					value = ptr;
				}

				/*
				 *	Do xlat if the *entire* string
				 *	is quoted.
				 */
				if ((value[0] == '\'' || value[0] == '"' ||
				     value[0] == '`') &&
				    (value[0] == value[strlen(value)-1])) {
					ptr = value;
					token = gettoken(&ptr, buf, sizeof(buf));
					switch (token) {
					/* take the unquoted string */
					case T_SINGLE_QUOTED_STRING:
					case T_DOUBLE_QUOTED_STRING:
						value = buf;
						break;

					/* the value will be xlat'ed later */
					case T_BACK_QUOTED_STRING:
						value = buf;
						do_xlat = TRUE;
						break;

					/* keep the original string */
					default:
						break;
					}
				}
				if (value[0] == '\0') {
					DEBUG("rlm_ldap: Attribute %s has no value", element->attr);
					continue;
				}

				DEBUG("rlm_ldap: Adding %s as %s, value %s & op=%d", element->attr, element->radius_attr, value, operator);

				/*
				 *	Create the pair.
				 */
				newpair = pairmake(element->radius_attr,
						   do_xlat ? NULL : value,
						   operator);
				if (newpair == NULL) {
					radlog(L_ERR, "rlm_ldap: Failed to create the pair: %s", librad_errstr);
					continue;
				}
				if (do_xlat) {
					newpair->flags.do_xlat = 1;
					strNcpy(newpair->strvalue, buf,
						sizeof(newpair->strvalue));
					newpair->length = 0;
				}

				/*
				 *	Add the pair into the packet.
				 */
				if (!vals_idx){
					pairdelete(pairs, newpair->attribute);
				}
				pairadd(&pairlist, newpair);
			}
		}
		ldap_value_free(vals);
	}

	return (pairlist);
}

/* globally exported name */
module_t        rlm_ldap = {
	"LDAP",
	RLM_TYPE_THREAD_SAFE,	/* type: reserved 	 */
	NULL,			/* initialization 	 */
	ldap_instantiate,	/* instantiation 	 */
	{
		ldap_authenticate,	/* authentication 	 */
		ldap_authorize,		/* authorization 	 */
		NULL,			/* preaccounting 	 */
		NULL,			/* accounting 		 */
		NULL,			/* checksimul 		 */
		NULL,			/* pre-proxy 		 */
		NULL,			/* post-proxy 		 */
#ifdef NOVELL
		ldap_postauth			/* post-auth 		 */
#else
		NULL
#endif
	},
	ldap_detach,		/* detach 		 */
	NULL,			/* destroy 		 */
};
