special characters in passwords + FR + ldap
Natalia Escalera
nescalera at gmail.com
Wed Mar 8 22:50:23 CET 2006
Hello,
I attached a copy of the file rlm_ldap.c of radius 1.1.0
.Thank you,
Natalia
On 3/8/06, A.L.M.Buxey at lboro.ac.uk <A.L.M.Buxey at lboro.ac.uk> wrote:
> Hi,
>
> > I tried the patch on
> > http://bugs.freeradius.org/showattachment.cgi?attach_id=112 for the
> > function ldap_pairget in the file rlm_ldap.c but it gives me an error
> > when executing the 'make' command saying that 'token' was already
> > declared. This is where token is declared:
> >
> > ---------------------------------------------------------------
> > LRAD_TOKEN token;
> > + LRAD_TOKEN token, operator;
> > ---------------------------------------------------------------
> >
> > May be the file in that page is corrupted. Can you please send me a
> > copy of the file for the patch.
>
> could you send the rlm_ldap.c file that you now have - your patching
> may have got hosed
>
>
> alan
> -
> List info/subscribe/unsubscribe? See http://www.freeradius.org/list/users.html
>
-------------- next part --------------
/*
* 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 at wwnet.net>, which in turn was based mostly on a Mysql+Cistron patch
* from <oyarzun at wilmington.net>
*
* 17 Jan 2000, Adrian Pavlykevych <pam at polynet.lviv.ua>
* - OpenLDAP SDK porting, basic TLS support, LDAP authorization,
* fault tolerance with multiple LDAP server support
* 24 May 2000, Adrian Pavlykevych <pam at polynet.lviv.ua>
* - Converting to new configuration file format, futher improvements
* in fault tolerance, threaded operation
* 12 Dec 2000, Adrian Pavlykevych <pam at 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 at 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 at 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 at 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 at gnf.org>
* - Do an xlat on the access_group attribute.
* Dec 2001, Kostas Kalevras <kkalev at 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 at 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 at ntm.org.pg>
* May 2002, Kostas Kalevras <kkalev at 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 at pennswoods.net>
* Jun 2002, Kostas Kalevras <kkalev at 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 at 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 at 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 at 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 at rtsffm.com>
* - If we add a check item then use the == operator. Based on an idea by Allister Maguire <amaguire at 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 at pennswoods.net>
* - Allow multiple regular profiles for an entry
* Oct 2002, Kostas Kalevras <kkalev at 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 at noc.ntua.gr>
* - Set LDAP version to V3 before binding. Now freeradius should work with openldap21
* Dec 2002, Kostas Kalevras <kkalev at noc.ntua.gr>
* - Set default values for the server and basedn parameters
* Feb 2003, Kostas Kalevras <kkalev at 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 at dsdk12.net>
* Mar 2003, Kostas Kalevras <kkalev at 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 at whidbey.net>
* May 2003, Kostas Kalevras <kkalev at noc.ntua.gr>
* - Don't do a double free on the attribute maps. Bug noted by Derrik Pates <dpates at dsdk12.net>
* - Apply a patch from Alexander M. Pravking <fduch at antar.bryansk.ru> to do an xlat on the
* retrieved attributes.
* Aug 2003, Kostas Kalevras <kkalev at noc.ntua.gr>
* - In case of a bad search filter, print out the corresponding filter
* Sep 2003, Kostas Kalevras <kkalev at noc.ntua.gr>
* - Compile even if we don't have pthread's
* Oct 2003, Kostas Kalevras <kkalev at 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 at 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 at noc.ntua.gr>
* - Add a patch from Jon Miner <miner at 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 at noc.ntua.gr>
* - If we are passed an empty password log a module failure message not an error message
* Apr 2004, Kostas Kalveras <kkalev at noc.ntua.gr>
* - Add a patch from Tarun Bhushan <tarun.bhushan at 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 1.122.2.8.2.2 2005/12/29 21:52:53 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_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);
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 (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, NULL)) {
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, NULL)){
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, NULL)) {
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: 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, NULL)) {
radlog (L_ERR, "rlm_ldap: unable to create filter.\n");
return RLM_MODULE_INVALID;
}
if (!radius_xlat(basedn, sizeof(basedn), inst->basedn,
request, NULL)) {
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)
{
int vals_count;
int vals_idx;
char *ptr;
char *value;
TLDAP_RADIUS *element;
LRAD_TOKEN token;
LRAD_TOKEN token, operator;
int is_generic_attribute;
char value[256];
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 */
/*
* check if there is a mapping from this LDAP attribute
* to a RADIUS attribute
*/
for (element = item_map; element != NULL; element = element->next) {
if ((vals = ldap_get_values(ld,entry,element->attr)) != NULL){
/* 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 */
}
/* 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 */
};
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