2 * rlm_ldap.c LDAP authorization and authentication module.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18 * This module is based on LDAP patch to Cistron radiusd by James Golovich
19 * <james@wwnet.net>, which in turn was based mostly on a Mysql+Cistron patch
20 * from <oyarzun@wilmington.net>
22 * 17 Jan 2000, Adrian Pavlykevych <pam@polynet.lviv.ua>
23 * - OpenLDAP SDK porting, basic TLS support, LDAP authorization,
24 * fault tolerance with multiple LDAP server support
25 * 24 May 2000, Adrian Pavlykevych <pam@polynet.lviv.ua>
26 * - Converting to new configuration file format, futher improvements
27 * in fault tolerance, threaded operation
28 * 12 Dec 2000, Adrian Pavlykevych <pam@polynet.lviv.ua>
29 * - Added preliminary support for multiple instances
30 * - moved all instance configuration into dynamicly allocated structure
31 * - Removed connection maintenance thread and all attempts for multihreading
32 * the module itself. OpenLDAP SDK is not thread safe when used with shared
34 * - Added configuration option for defining LDAP attribute of user object,
35 * which controls remote access.
36 * 16 Feb 2001, Hannu Laurila <hannu.laurila@japo.fi>
37 * - LDAP<->RADIUS attribute mappings are now read from a file
38 * - Support for generic RADIUS check and reply attribute.
39 * Jun 2001, Kostas Kalevras <kkalev@noc.ntua.gr>
40 * - Fix: check and reply attributes from LDAP _replace_ existing ones
41 * - Added "default_profile" directive, which points to radiusProfile
42 * object, which contains default values for RADIUS users
43 * - Added "profile_attribute" directive, which specifies user object
44 * attribute pointing to radiusProfile object.
45 * Nov 2001, Kostas Kalevras <kkalev@noc.ntua.gr>
46 * - Added support for adding the user password to the check. Based on
47 * the password_header directive rlm_ldap will strip the
48 * password header if needed. This will make support for CHAP much easier.
49 * - Added module messages when we reject a user.
50 * - Added ldap_groupcmp to allow searching for user group membership.
51 * - Added ldap_xlat to allow ldap urls in xlat strings. Something like:
52 * %{ldap:ldap:///dc=company,dc=com?cn?sub?uid=user}
53 * Nov 2001, Gordon Tetlow <gordont@gnf.org>
54 * - Do an xlat on the access_group attribute.
55 * Dec 2001, Kostas Kalevras <kkalev@noc.ntua.gr>
56 * - Added ldap caching for the default/regular profiles and group entries.
57 * - Fixed a memory leak in ldap_xlat.
58 * - Removed dict_attrbyname from ldap_pairget. They are not needed.
59 * - Moved the radius_xlat's for filter and basedn in ldap_authenticate() to
61 * - Made the module thread safe. We create a connection pool and each thread
62 * will call ldap_get_conn to lock one of the ldap connections and release with
63 * a call to ldap_release_conn when it has finished.
64 * - Request only the user attributes that interest us (radius attributes,regular
65 * profile,user password and access attribute).
66 * Mar 2002, Kostas Kalevras <kkalev@noc.ntua.gr>
67 * - Fixed a bug where the ldap server will kill the idle connections from the ldap
68 * connection pool. We now check if ldap_search returns LDAP_SERVER_DOWN and try to
69 * reconnect if it does. Bug noted by Dan Perik <dan_perik-work@ntm.org.pg>
70 * May 2002, Kostas Kalevras <kkalev@noc.ntua.gr>
71 * - Instead of the Group attribute we now have the Ldap-Group attribute, to avoid
72 * collisions with other modules
73 * - If perform_search fails check the ld != NULL before using it. Based on a bug report
74 * by John <jhogenmiller@pennswoods.net>
75 * Jun 2002, Kostas Kalevras <kkalev@noc.ntua.gr>
76 * - Add the ability to do a paircmp on the check items. Add a compare_check_items boolean
77 * configuration directive which defaults to no. If it is set then we will do a compare
78 * - Add another configuration directive. access_attr_used_for_allow. If it is set to yes
79 * then the access_attr will be used to allow user access. If it is set to no then it will
80 * be used to deny user access.
81 * - Remember to free inst->atts in ldap_detach()
82 * - Add a forgotten ldap_free_urldesc in ldap_xlat()
83 * - Add a variable locked in the LDAP_CONN structure. We use this to avoid deadlocks. The mutex
84 * we are using is of type fast and can deadlock if the same thread tries to relock it. That
85 * could happen in case of calls to xlat.
86 * - When ldap_search returns NO_SUCH_OBJECT don't return fail but notfound
87 * Jul 2002, Kostas Kalevras <kkalev@noc.ntua.gr>
88 * - Fix the logic when we get an LDAP_SERVER_DOWN or we have conn->ld == NULL in perform_search
89 * - Try to minimize the penalty of having the ldap server go down. The comments before
90 * MAX_FAILED_CONNS_* definitions should explain things.
91 * - Check for a number of error codes from ldap_search and log corresponding error messages
92 * We should only reconnect when that can help things.
93 * - In ldap_groupcmp instead of first searching for the group object and then checking user
94 * group membership combine them in one ldap search operation. That should make group
95 * membership checks a lot faster.
96 * - Remember to do ldap_release_conn and ldap_msgfree when we do paircmp and the result is reject
97 * Aug 2002, Kostas Kalevras <kkalev@noc.ntua.gr>
98 * - Add support for group membership attribute inside the user entry in ldap_groupcmp. The attribute
99 * can either contain the name or the DN of the group. Added the groupmembership_attribute
100 * configuration directive
101 * - Move the ldap_{get,release}_conn in ldap_groupcmp so that we hold a connection for the minimum time.
102 * - Now that ldap_groupcmp is complete we really don't need access_group. Removed it.
103 * - Remember to free groupmembership_attribute in ldap_detach
104 * - Don't delete existing generic attributes in ldap_pairget when adding new ones. Since generic attributes
105 * have operators we don't need to try to be cleaver.
106 * Sep 2002, Kostas Kalevras <kkalev@noc.ntua.gr>
107 * - Fix a crash in ldap_pairget when the attribute value is larger than the buffer size
108 * Bug report by Stefan Radovanovici <sra@rtsffm.com>
109 * - If we add a check item then use the == operator. Based on an idea by Allister Maguire <amaguire@gnc.net.nz>
110 * - Only add a failure message for bind as user failed in ldap_authenticate if the result of ldap_connect was
112 * - Make tls_mode a configurable option. Patch from John <jhogenmiller@pennswoods.net>
113 * - Allow multiple regular profiles for an entry
114 * Oct 2002, Kostas Kalevras <kkalev@noc.ntua.gr>
115 * - Disable cache after searching for the default profile
116 * - Use the MAX_FAILED_CONNS_* in ldap_authenticate() when calling ldap_connect()
117 * Nov 2002, Kostas Kalevras <kkalev@noc.ntua.gr>
118 * - Set LDAP version to V3 before binding. Now freeradius should work with openldap21
119 * Dec 2002, Kostas Kalevras <kkalev@noc.ntua.gr>
120 * - Set default values for the server and basedn parameters
121 * Feb 2003, Kostas Kalevras <kkalev@noc.ntua.gr>
122 * - Add support for ldap_initialize. That way we can specify the server as an ldap url.
123 * Based on ideas from Derrik Pates <dpates@dsdk12.net>
124 * Mar 2003, Kostas Kalevras <kkalev@noc.ntua.gr>
125 * - Add an ldap_escape_func. Escape the * character from the filter so that we can avoid
126 * the trivial DoS of username=*
127 * - Remove the caching code. It does not exist in openldap21.
128 * Based on a report from Mike Denka <mdenk@whidbey.net>
129 * May 2003, Kostas Kalevras <kkalev@noc.ntua.gr>
130 * - Don't do a double free on the attribute maps. Bug noted by Derrik Pates <dpates@dsdk12.net>
131 * - Apply a patch from Alexander M. Pravking <fduch@antar.bryansk.ru> to do an xlat on the
132 * retrieved attributes.
133 * Aug 2003, Kostas Kalevras <kkalev@noc.ntua.gr>
134 * - In case of a bad search filter, print out the corresponding filter
135 * Sep 2003, Kostas Kalevras <kkalev@noc.ntua.gr>
136 * - Compile even if we don't have pthread's
137 * Oct 2003, Kostas Kalevras <kkalev@noc.ntua.gr>
138 * - Add a new configuration directive, base_filter which is used for base scope searches
139 * (When searching for the default/regular profiles for example)
140 * Nov 2003, Kostas Kalevras <kkalev@noc.ntua.gr>
141 * - Add a new configuration directive, do_xlat (default: yes). If set we use pairxlatmove
142 * on the radius attributes, else we fall back to the plain old pairadd. That way people
143 * can fall back on the 0.8.1 behaviour without making changes to their ldap database or
144 * gain a little performance by not using pairxlatmove
145 * Dec 2003, Kostas Kalevras <kkalev@noc.ntua.gr>
146 * - Add a patch from Jon Miner <miner@doit.wisc.edu> to add the ability to configure
147 * various LDAP TLS options
148 * - Only call pairfree if we are using pairxlatmove not for pairadd
149 * Mar 2004, Kostas Kalevras <kkalev@noc.ntua.gr>
150 * - If we are passed an empty password log a module failure message not an error message
151 * Apr 2004, Kostas Kalveras <kkalev@noc.ntua.gr>
152 * - Add a patch from Tarun Bhushan <tarun.bhushan@macquarie.com> to add a tls_mode boolean
153 * directive so that we can enable TLS connetions even if port is not set to 636
154 * - Add an error message if ldap_initialize() is not available and we are passed a URL like
155 * 'server' directive.
156 * - Add a per instance Ldap-Group attribute (of the form <instance>-Ldap-Group) and register
157 * a corresponding ldap_groupcmp function
158 * - Small change to ldap_get_conn to fix problems on some platforms
160 static const char rcsid[] = "$Id$";
162 #include "autoconf.h"
164 #include <sys/types.h>
165 #include <sys/socket.h>
166 #include <sys/time.h>
167 #include <netinet/in.h>
184 #include "libradius.h"
186 #include "conffile.h"
188 #include "rad_assert.h"
190 #ifndef HAVE_PTHREAD_H
192 * This is a lot simpler than putting ifdef's around
193 * every use of the pthread functions.
195 #define pthread_mutex_lock(a)
196 #define pthread_mutex_trylock(a) (0)
197 #define pthread_mutex_unlock(a)
198 #define pthread_mutex_init(a,b)
199 #define pthread_mutex_destroy(a)
203 #define MAX_FILTER_STR_LEN 1024
207 * These are used in case ldap_search returns LDAP_SERVER_DOWN
208 * In that case we do conn->failed_conns++ and then check it:
209 * If conn->failed_conns <= MAX_FAILED_CONNS_START then we try
211 * conn->failed_conns is also checked on entrance in perform_search:
212 * If conn->failed_conns > MAX_FAILED_CONNS_START then we don't
213 * try to do anything and we just do conn->failed_conns++ and
214 * return RLM_MODULE_FAIL
215 * if conn->failed_conns >= MAX_FAILED_CONNS_END then we give it
216 * another chance and we set it to MAX_FAILED_CONNS_RESTART and
220 * We are assuming that the majority of the LDAP_SERVER_DOWN cases
221 * will either be an ldap connection timeout or a temporary ldap
223 * As a result we make a few attempts to reconnect hoping that the problem
224 * will soon go away. If it does not go away then we just return
225 * RLM_MODULE_FAIL on entrance in perform_search until conn->failed_conns
226 * gets to MAX_FAILED_CONNS_END. After that we give it one more chance by
227 * going back to MAX_FAILED_CONNS_RESTART
231 #define MAX_FAILED_CONNS_END 20
232 #define MAX_FAILED_CONNS_RESTART 4
233 #define MAX_FAILED_CONNS_START 5
235 #ifdef NOVELL_UNIVERSAL_PASSWORD
237 /* Universal Password Length */
238 #define UNIVERSAL_PASS_LEN 256
240 int nmasldap_get_password(
243 size_t *pwdSize, /* in bytes */
250 #define REQUEST_ACCEPTED 0
251 #define REQUEST_CHALLENGED 1
252 #define REQUEST_REJECTED 2
253 #define MAX_CHALLENGE_LEN 128
255 int radLdapXtnNMASAuth( LDAP *, char *, char *, char *, char *, size_t *, char *, int * );
259 /* linked list of mappings between RADIUS attributes and LDAP attributes */
260 struct TLDAP_RADIUS {
263 struct TLDAP_RADIUS* next;
265 typedef struct TLDAP_RADIUS TLDAP_RADIUS;
267 typedef struct ldap_conn {
272 #ifdef HAVE_PTHREAD_H
273 pthread_mutex_t mutex;
281 struct timeval net_timeout;
282 struct timeval timeout;
297 char *default_profile;
302 char *dictionary_mapping;
303 char *groupname_attr;
304 char *groupmemb_filt;
305 char *groupmemb_attr;
307 TLDAP_RADIUS *check_item_map;
308 TLDAP_RADIUS *reply_item_map;
311 LDAP_CONN *apc_conns;
313 int ldap_debug; /* Debug flag for LDAP SDK */
314 char *xlat_name; /* name used to xlat */
315 char *tls_cacertfile;
320 char *tls_require_cert;
322 int edir_account_policy_check;
327 /* The default setting for TLS Certificate Verification */
328 #define TLS_DEFAULT_VERIFY "allow"
330 static CONF_PARSER module_config[] = {
331 {"server", PW_TYPE_STRING_PTR, offsetof(ldap_instance,server), NULL, "localhost"},
332 {"port", PW_TYPE_INTEGER, offsetof(ldap_instance,port), NULL, "389"},
333 /* wait forever on network activity */
334 {"net_timeout", PW_TYPE_INTEGER, offsetof(ldap_instance,net_timeout.tv_sec), NULL, "10"},
335 /* wait forever for search results */
336 {"timeout", PW_TYPE_INTEGER, offsetof(ldap_instance,timeout.tv_sec), NULL, "20"},
337 /* allow server unlimited time for search (server-side limit) */
338 {"timelimit", PW_TYPE_INTEGER, offsetof(ldap_instance,timelimit), NULL, "20"},
339 {"identity", PW_TYPE_STRING_PTR, offsetof(ldap_instance,login), NULL, ""},
340 {"tls_mode", PW_TYPE_BOOLEAN, offsetof(ldap_instance,tls_mode), NULL, "no"},
341 {"start_tls", PW_TYPE_BOOLEAN, offsetof(ldap_instance,start_tls), NULL, "no"},
342 {"tls_cacertfile", PW_TYPE_STRING_PTR, offsetof(ldap_instance,tls_cacertfile), NULL, NULL},
343 {"tls_cacertdir", PW_TYPE_STRING_PTR, offsetof(ldap_instance,tls_cacertdir), NULL, NULL},
344 {"tls_certfile", PW_TYPE_STRING_PTR, offsetof(ldap_instance,tls_certfile), NULL, NULL},
345 {"tls_keyfile", PW_TYPE_STRING_PTR, offsetof(ldap_instance,tls_keyfile), NULL, NULL},
346 {"tls_randfile", PW_TYPE_STRING_PTR, offsetof(ldap_instance,tls_randfile), NULL, NULL},
347 {"tls_require_cert", PW_TYPE_STRING_PTR, offsetof(ldap_instance,tls_require_cert), NULL, TLS_DEFAULT_VERIFY},
348 {"password", PW_TYPE_STRING_PTR, offsetof(ldap_instance,password), NULL, ""},
349 {"basedn", PW_TYPE_STRING_PTR, offsetof(ldap_instance,basedn), NULL, "o=notexist"},
350 {"filter", PW_TYPE_STRING_PTR, offsetof(ldap_instance,filter), NULL, "(uid=%u)"},
351 {"base_filter", PW_TYPE_STRING_PTR, offsetof(ldap_instance,base_filter), NULL, "(objectclass=radiusprofile)"},
352 {"default_profile", PW_TYPE_STRING_PTR, offsetof(ldap_instance,default_profile), NULL, NULL},
353 {"profile_attribute", PW_TYPE_STRING_PTR, offsetof(ldap_instance,profile_attr), NULL, NULL},
354 {"password_header", PW_TYPE_STRING_PTR, offsetof(ldap_instance,passwd_hdr), NULL, NULL},
355 {"password_attribute", PW_TYPE_STRING_PTR, offsetof(ldap_instance,passwd_attr), NULL, NULL},
356 /* LDAP attribute name that controls remote access */
357 {"access_attr", PW_TYPE_STRING_PTR, offsetof(ldap_instance,access_attr), NULL, NULL},
358 /* file with mapping between LDAP and RADIUS attributes */
359 {"groupname_attribute", PW_TYPE_STRING_PTR, offsetof(ldap_instance,groupname_attr), NULL, "cn"},
360 {"groupmembership_filter", PW_TYPE_STRING_PTR, offsetof(ldap_instance,groupmemb_filt), NULL, "(|(&(objectClass=GroupOfNames)(member=%{Ldap-UserDn}))(&(objectClass=GroupOfUniqueNames)(uniquemember=%{Ldap-UserDn})))"},
361 {"groupmembership_attribute", PW_TYPE_STRING_PTR, offsetof(ldap_instance,groupmemb_attr), NULL, NULL},
362 {"dictionary_mapping", PW_TYPE_STRING_PTR, offsetof(ldap_instance,dictionary_mapping), NULL, "${confdir}/ldap.attrmap"},
363 {"ldap_debug", PW_TYPE_INTEGER, offsetof(ldap_instance,ldap_debug), NULL, "0x0000"},
364 {"ldap_connections_number", PW_TYPE_INTEGER, offsetof(ldap_instance,num_conns), NULL, "5"},
365 {"compare_check_items", PW_TYPE_BOOLEAN, offsetof(ldap_instance,do_comp), NULL, "no"},
366 {"access_attr_used_for_allow", PW_TYPE_BOOLEAN, offsetof(ldap_instance,default_allow), NULL, "yes"},
367 {"do_xlat", PW_TYPE_BOOLEAN, offsetof(ldap_instance,do_xlat), NULL, "yes"},
369 {"edir_account_policy_check", PW_TYPE_BOOLEAN, offsetof(ldap_instance,edir_account_policy_check), NULL, "yes"},
372 {"set_auth_type", PW_TYPE_BOOLEAN, offsetof(ldap_instance,set_auth_type), NULL, "yes"},
373 {NULL, -1, 0, NULL, NULL}
376 #define ld_valid ld_options.ldo_valid
377 #define LDAP_VALID_SESSION 0x2
378 #define LDAP_VALID(ld) ( (ld)->ld_valid == LDAP_VALID_SESSION )
381 static void fieldcpy(char *, char **);
383 static VALUE_PAIR *ldap_pairget(LDAP *, LDAPMessage *, TLDAP_RADIUS *,VALUE_PAIR **,char);
384 static int ldap_groupcmp(void *, REQUEST *, VALUE_PAIR *, VALUE_PAIR *, VALUE_PAIR *, VALUE_PAIR **);
385 static int ldap_xlat(void *, REQUEST *, char *, char *, size_t, RADIUS_ESCAPE_STRING);
386 static LDAP *ldap_connect(void *instance, const char *, const char *, int, int *, char **);
387 static int read_mappings(ldap_instance* inst);
389 static inline int ldap_get_conn(LDAP_CONN *conns,LDAP_CONN **ret,void *instance)
391 ldap_instance *inst = instance;
394 for(i=0;i<inst->num_conns;i++){
395 DEBUG("rlm_ldap: ldap_get_conn: Checking Id: %d",i);
396 if (conns[i].locked == 0 && pthread_mutex_trylock(&(conns[i].mutex)) == 0){
399 DEBUG("rlm_ldap: ldap_get_conn: Got Id: %d",i);
407 static inline void ldap_release_conn(int i, LDAP_CONN *conns)
409 DEBUG("rlm_ldap: ldap_release_conn: Release Id: %d",i);
411 pthread_mutex_unlock(&(conns[i].mutex));
414 /*************************************************************************
416 * Function: rlm_ldap_instantiate
418 * Purpose: Uses section of radiusd config file passed as parameter
419 * to create an instance of the module.
421 *************************************************************************/
423 ldap_instantiate(CONF_SECTION * conf, void **instance)
428 int reply_map_num = 0;
429 int check_map_num = 0;
430 int att_map[3] = {0,0,0};
436 inst = rad_malloc(sizeof *inst);
440 memset(inst, 0, sizeof(*inst));
442 if (cf_section_parse(conf, inst, module_config) < 0) {
447 if (inst->server == NULL) {
448 radlog(L_ERR, "rlm_ldap: missing 'server' directive.");
453 if (ldap_is_ldap_url(inst->server)){
454 #ifdef HAVE_LDAP_INITIALIZE
458 radlog(L_ERR, "rlm_ldap: 'server' directive is in URL form but ldap_initialize() is not available.");
464 inst->timeout.tv_usec = 0;
465 inst->net_timeout.tv_usec = 0;
466 /* workaround for servers which support LDAPS but not START TLS */
467 if(inst->port == LDAPS_PORT || inst->tls_mode)
468 inst->tls_mode = LDAP_OPT_X_TLS_HARD;
471 inst->reply_item_map = NULL;
472 inst->check_item_map = NULL;
474 inst->failed_conns = 0;
476 DEBUG("rlm_ldap: Registering ldap_groupcmp for Ldap-Group");
477 paircompare_register(PW_LDAP_GROUP, PW_USER_NAME, ldap_groupcmp, inst);
478 memset(&flags, 0, sizeof(flags));
480 xlat_name = cf_section_name2(conf);
481 if (xlat_name != NULL){
486 * Allocate room for <instance>-Ldap-Group
488 group_name = malloc((strlen(xlat_name) + 1 + 11) * sizeof(char));
489 rad_assert(group_name != NULL);
490 sprintf(group_name,"%s-Ldap-Group",xlat_name);
491 DEBUG("rlm_ldap: Creating new attribute %s",group_name);
492 dict_addattr(group_name, 0, PW_TYPE_STRING, -1, flags);
493 dattr = dict_attrbyname(group_name);
495 radlog(L_ERR, "rlm_ldap: Failed to create attribute %s",group_name);
499 DEBUG("rlm_ldap: Registering ldap_groupcmp for %s",group_name);
500 paircompare_register(dattr->attr, PW_USER_NAME, ldap_groupcmp, inst);
503 xlat_name = cf_section_name1(conf);
504 rad_assert(xlat_name != NULL); /* or all hell breaks loose */
506 inst->xlat_name = strdup(xlat_name);
507 DEBUG("rlm_ldap: Registering ldap_xlat with xlat_name %s",xlat_name);
508 xlat_register(xlat_name,ldap_xlat,inst);
511 * Over-ride set_auth_type if there's no Auth-Type of our name.
512 * This automagically catches the case where LDAP is listed
513 * in "authorize", but not "authenticate".
515 dv = dict_valbyname(PW_AUTH_TYPE, xlat_name);
517 if (inst->set_auth_type) {
518 DEBUG2("rlm_ldap: Over-riding set_auth_type, as we're not listed in the \"authenticate\" section.");
520 inst->set_auth_type = 0;
525 * (LDAP_Instance, V1) attribute-value pair in the config items list means
526 * that the 'authorize' method of the instance 'V1' of the LDAP module has
527 * processed this request.
529 dict_addattr("LDAP-Instance", 0, PW_TYPE_STRING, -1, flags);
531 * ('eDir-APC', '1') in config items list => Do not perform eDirectory account
533 * ('eDir-APC', '2') in config items list => Perform eDirectory APC
534 * ('eDir-APC', '3') in config items list => eDirectory APC has been completed
536 dict_addattr("eDir-APC", 0, PW_TYPE_STRING, -1, flags);
538 dict_addattr("eDir-Auth-Option", 0, PW_TYPE_STRING, -1, flags);
542 if (inst->num_conns <= 0){
543 radlog(L_ERR, "rlm_ldap: Invalid ldap connections number passed.");
547 inst->conns = (LDAP_CONN *)malloc(sizeof(LDAP_CONN)*inst->num_conns);
548 if (inst->conns == NULL){
549 radlog(L_ERR, "rlm_ldap: Could not allocate memory. Aborting.");
553 for(;i<inst->num_conns;i++){
554 inst->conns[i].bound = 0;
555 inst->conns[i].locked = 0;
556 inst->conns[i].failed_conns = 0;
557 inst->conns[i].ld = NULL;
558 pthread_mutex_init(&inst->conns[i].mutex, NULL);
563 * 'inst->apc_conns' is a separate connection pool to be used for performing
564 * eDirectory account policy check in the 'postauth' method. This avoids
565 * changing the (RADIUS server) credentials associated with the 'inst->conns'
568 inst->apc_conns = (LDAP_CONN *)malloc(sizeof(LDAP_CONN)*inst->num_conns);
569 if (inst->apc_conns == NULL){
570 radlog(L_ERR, "rlm_ldap: Could not allocate memory. Aborting.");
574 for(i = 0; i < inst->num_conns; i++){
575 inst->apc_conns[i].bound = 0;
576 inst->apc_conns[i].locked = 0;
577 inst->apc_conns[i].failed_conns = 0;
578 inst->apc_conns[i].ld = NULL;
579 pthread_mutex_init(&inst->apc_conns[i].mutex, NULL);
583 if (read_mappings(inst) != 0) {
584 radlog(L_ERR, "rlm_ldap: Reading dictionary mappings from file %s failed",
585 inst->dictionary_mapping);
589 if (inst->check_item_map == NULL && inst->reply_item_map == NULL){
590 radlog(L_ERR, "rlm_ldap: dictionary mappings file %s did not contain any mappings",
591 inst->dictionary_mapping);
596 pair = inst->check_item_map;
601 check_map_num = (atts_num - 1);
602 pair = inst->reply_item_map;
607 reply_map_num = (atts_num - 1);
608 if (inst->profile_attr)
610 if (inst->passwd_attr)
612 if (inst->access_attr)
615 atts_num++; /* eDirectory Authentication Option attribute */
618 inst->atts = (char **)malloc(sizeof(char *)*(atts_num + 1));
619 if (inst->atts == NULL){
620 radlog(L_ERR, "rlm_ldap: Could not allocate memory. Aborting.");
624 pair = inst->check_item_map;
626 pair = inst->reply_item_map;
628 for(i=0;i<atts_num - 1;i++){
630 for(i=0;i<atts_num;i++){
632 if (i <= check_map_num ){
633 inst->atts[i] = pair->attr;
634 if (i == check_map_num)
635 pair = inst->reply_item_map;
639 else if (i <= reply_map_num){
640 inst->atts[i] = pair->attr;
644 if (inst->profile_attr && !att_map[0]){
645 inst->atts[i] = inst->profile_attr;
648 else if (inst->passwd_attr && !att_map[1]){
649 inst->atts[i] = inst->passwd_attr;
652 else if (inst->access_attr && !att_map[2]){
653 inst->atts[i] = inst->access_attr;
659 inst->atts[atts_num - 1] = "sasdefaultloginsequence";
661 inst->atts[atts_num] = NULL;
663 DEBUG("conns: %p",inst->conns);
673 * read_mappings(...) reads a ldap<->radius mappings file to inst->reply_item_map and inst->check_item_map
676 #define MAX_LINE_LEN 160
677 #define GENERIC_ATTRIBUTE_ID "$GENERIC$"
680 read_mappings(ldap_instance* inst)
684 /* all buffers are of MAX_LINE_LEN so we can use sscanf without being afraid of buffer overflows */
685 char buf[MAX_LINE_LEN], itemType[MAX_LINE_LEN], radiusAttribute[MAX_LINE_LEN], ldapAttribute[MAX_LINE_LEN];
688 /* open the mappings file for reading */
690 filename = inst->dictionary_mapping;
691 DEBUG("rlm_ldap: reading ldap<->radius mappings from file %s", filename);
692 mapfile = fopen(filename, "r");
694 if (mapfile == NULL) {
695 radlog(L_ERR, "rlm_ldap: Opening file %s failed: %s",
696 filename, strerror(errno));
697 return -1; /* error */
700 /* read file line by line. Note that if line length exceed MAX_LINE_LEN, line numbers will be mixed up */
704 while (fgets(buf, sizeof buf, mapfile)!=NULL) {
712 ptr = strchr(buf, '#');
716 if (buf[0] == 0) continue;
718 /* extract tokens from the string */
719 token_count = sscanf(buf, "%s %s %s", itemType, radiusAttribute, ldapAttribute);
721 if (token_count <= 0) /* no tokens */
724 if (token_count != 3) {
725 radlog(L_ERR, "rlm_ldap: Skipping %s line %i: %s", filename, linenumber, buf);
726 radlog(L_ERR, "rlm_ldap: Expected 3 tokens "
727 "(Item type, RADIUS Attribute and LDAP Attribute) but found only %i", token_count);
731 /* create new TLDAP_RADIUS list node */
732 pair = rad_malloc(sizeof(TLDAP_RADIUS));
734 pair->attr = strdup(ldapAttribute);
735 pair->radius_attr = strdup(radiusAttribute);
737 if ( (pair->attr == NULL) || (pair->radius_attr == NULL) ) {
738 radlog(L_ERR, "rlm_ldap: Out of memory");
739 if (pair->attr) free(pair->attr);
740 if (pair->radius_attr) free(pair->radius_attr);
746 /* push node to correct list */
747 if (strcasecmp(itemType, "checkItem") == 0) {
748 pair->next = inst->check_item_map;
749 inst->check_item_map = pair;
750 } else if (strcasecmp(itemType, "replyItem") == 0) {
751 pair->next = inst->reply_item_map;
752 inst->reply_item_map = pair;
754 radlog(L_ERR, "rlm_ldap: file %s: skipping line %i: unknown itemType %s",
755 filename, linenumber, itemType);
757 free(pair->radius_attr);
762 DEBUG("rlm_ldap: LDAP %s mapped to RADIUS %s",
763 pair->attr, pair->radius_attr);
768 return 0; /* success */
772 perform_search(void *instance, LDAP_CONN *conn, char *search_basedn, int scope, char *filter,
773 char **attrs, LDAPMessage ** result)
775 int res = RLM_MODULE_OK;
777 ldap_instance *inst = instance;
778 int search_retry = 0;
783 radlog(L_ERR, "rlm_ldap: NULL connection handle passed");
784 return RLM_MODULE_FAIL;
786 if (conn->failed_conns > MAX_FAILED_CONNS_START){
787 conn->failed_conns++;
788 if (conn->failed_conns >= MAX_FAILED_CONNS_END){
789 conn->failed_conns = MAX_FAILED_CONNS_RESTART;
794 if (!conn->bound || conn->ld == NULL) {
795 DEBUG2("rlm_ldap: attempting LDAP reconnection");
797 DEBUG2("rlm_ldap: closing existing LDAP connection");
798 ldap_unbind_s(conn->ld);
800 if ((conn->ld = ldap_connect(instance, inst->login,
801 inst->password, 0, &res, NULL)) == NULL) {
802 radlog(L_ERR, "rlm_ldap: (re)connection attempt failed");
803 if (search_retry == 0)
804 conn->failed_conns++;
805 return (RLM_MODULE_FAIL);
808 conn->failed_conns = 0;
810 DEBUG2("rlm_ldap: performing search in %s, with filter %s", search_basedn ? search_basedn : "(null)" , filter);
811 switch (ldap_search_st(conn->ld, search_basedn, scope, filter, attrs, 0, &(inst->timeout), result)) {
813 case LDAP_NO_SUCH_OBJECT:
815 case LDAP_SERVER_DOWN:
816 radlog(L_ERR, "rlm_ldap: ldap_search() failed: LDAP connection lost.");
817 conn->failed_conns++;
818 if (search_retry == 0){
819 if (conn->failed_conns <= MAX_FAILED_CONNS_START){
820 radlog(L_INFO, "rlm_ldap: Attempting reconnect");
823 ldap_msgfree(*result);
827 ldap_msgfree(*result);
828 return RLM_MODULE_FAIL;
829 case LDAP_INSUFFICIENT_ACCESS:
830 radlog(L_ERR, "rlm_ldap: ldap_search() failed: Insufficient access. Check the identity and password configuration directives.");
831 ldap_msgfree(*result);
832 return RLM_MODULE_FAIL;
834 radlog(L_ERR, "rlm_ldap: ldap_search() failed: Timed out while waiting for server to respond. Please increase the timeout.");
835 ldap_msgfree(*result);
836 return RLM_MODULE_FAIL;
837 case LDAP_FILTER_ERROR:
838 radlog(L_ERR, "rlm_ldap: ldap_search() failed: Bad search filter: %s",filter);
839 ldap_msgfree(*result);
840 return RLM_MODULE_FAIL;
841 case LDAP_TIMELIMIT_EXCEEDED:
843 case LDAP_UNAVAILABLE:
844 /* We don't need to reconnect in these cases so we don't set conn->bound */
845 ldap_get_option(conn->ld, LDAP_OPT_ERROR_NUMBER, &ldap_errno);
846 radlog(L_ERR, "rlm_ldap: ldap_search() failed: %s", ldap_err2string(ldap_errno));
847 ldap_msgfree(*result);
848 return (RLM_MODULE_FAIL);
850 ldap_get_option(conn->ld, LDAP_OPT_ERROR_NUMBER, &ldap_errno);
851 radlog(L_ERR, "rlm_ldap: ldap_search() failed: %s", ldap_err2string(ldap_errno));
853 ldap_msgfree(*result);
854 return (RLM_MODULE_FAIL);
857 if ((ldap_count_entries(conn->ld, *result)) != 1) {
858 DEBUG("rlm_ldap: object not found or got ambiguous search result");
859 res = RLM_MODULE_NOTFOUND;
860 ldap_msgfree(*result);
867 * Translate the LDAP queries.
869 static int ldap_escape_func(char *out, int outlen, const char *in)
875 * Encode unsafe characters.
878 ((in[0] == ' ') || (in[0] == '#'))) ||
879 (strchr(",+\"\\<>;*=()", *in))) {
880 static const char hex[] = "0123456789abcdef";
883 * Only 3 or less bytes available.
890 *(out++) = hex[((*in) >> 4) & 0x0f];
891 *(out++) = hex[(*in) & 0x0f];
899 * Only one byte left.
917 * ldap_groupcmp(). Implement the Ldap-Group == "group" filter
920 static int ldap_groupcmp(void *instance, REQUEST *req, VALUE_PAIR *request, VALUE_PAIR *check,
921 VALUE_PAIR *check_pairs, VALUE_PAIR **reply_pairs)
923 char filter[MAX_FILTER_STR_LEN];
924 char gr_filter[MAX_FILTER_STR_LEN];
926 LDAPMessage *result = NULL;
927 LDAPMessage *msg = NULL;
928 char basedn[MAX_FILTER_STR_LEN];
929 char *attrs[] = {"dn",NULL};
931 ldap_instance *inst = instance;
932 char *group_attrs[] = {inst->groupmemb_attr,NULL};
935 VALUE_PAIR *vp_user_dn;
936 VALUE_PAIR **request_pairs;
938 request_pairs = &req->packet->vps;
940 DEBUG("rlm_ldap: Entering ldap_groupcmp()");
942 if (check->strvalue == NULL || check->length == 0){
943 DEBUG("rlm_ldap::ldap_groupcmp: Illegal group name");
948 DEBUG("rlm_ldap::ldap_groupcmp: NULL request");
952 if (!radius_xlat(basedn, sizeof(basedn), inst->basedn, req, ldap_escape_func)) {
953 DEBUG("rlm_ldap::ldap_groupcmp: unable to create basedn.");
957 while((vp_user_dn = pairfind(*request_pairs, PW_LDAP_USERDN)) == NULL){
958 char *user_dn = NULL;
960 if (!radius_xlat(filter, sizeof(filter), inst->filter,
961 req, ldap_escape_func)){
962 DEBUG("rlm_ldap::ldap_groupcmp: unable to create filter");
965 if ((conn_id = ldap_get_conn(inst->conns,&conn,inst)) == -1){
966 radlog(L_ERR, "rlm_ldap: All ldap connections are in use");
969 if ((res = perform_search(inst, conn, basedn, LDAP_SCOPE_SUBTREE,
970 filter, attrs, &result)) != RLM_MODULE_OK){
971 DEBUG("rlm_ldap::ldap_groupcmp: search failed");
972 ldap_release_conn(conn_id,inst->conns);
975 if ((msg = ldap_first_entry(conn->ld, result)) == NULL) {
976 DEBUG("rlm_ldap::ldap_groupcmp: ldap_first_entry() failed");
977 ldap_release_conn(conn_id,inst->conns);
978 ldap_msgfree(result);
981 if ((user_dn = ldap_get_dn(conn->ld, msg)) == NULL) {
982 DEBUG("rlm_ldap:ldap_groupcmp:: ldap_get_dn() failed");
983 ldap_release_conn(conn_id,inst->conns);
984 ldap_msgfree(result);
987 ldap_release_conn(conn_id,inst->conns);
989 * Adding new attribute containing DN for LDAP object associated with
992 pairadd(request_pairs, pairmake("Ldap-UserDn", user_dn, T_OP_EQ));
993 ldap_memfree(user_dn);
994 ldap_msgfree(result);
997 if(!radius_xlat(gr_filter, sizeof(gr_filter), inst->groupmemb_filt, req, ldap_escape_func)){
998 DEBUG("rlm_ldap::ldap_groupcmp: unable to create filter.");
1002 if (strchr((char *)check->strvalue,',') != NULL) {
1003 /* This looks like a DN */
1004 snprintf(filter,sizeof(filter), "%s",gr_filter);
1005 snprintf(basedn,sizeof(basedn), "%s",(char *)check->strvalue);
1007 snprintf(filter,sizeof(filter), "(&(%s=%s)%s)",inst->groupname_attr,(char *)check->strvalue,gr_filter);
1009 if ((conn_id = ldap_get_conn(inst->conns,&conn,inst)) == -1){
1010 radlog(L_ERR, "rlm_ldap: All ldap connections are in use");
1014 if ((res = perform_search(inst, conn, basedn, LDAP_SCOPE_SUBTREE,
1015 filter, attrs, &result)) == RLM_MODULE_OK){
1016 DEBUG("rlm_ldap::ldap_groupcmp: User found in group %s",
1017 (char *)check->strvalue);
1018 ldap_msgfree(result);
1019 ldap_release_conn(conn_id,inst->conns);
1023 ldap_release_conn(conn_id,inst->conns);
1025 if (res != RLM_MODULE_NOTFOUND ) {
1026 DEBUG("rlm_ldap::ldap_groupcmp: Search returned error");
1030 if (inst->groupmemb_attr == NULL){
1031 /* search returned NOTFOUND and searching for membership
1032 * using user object attributes is not specified in config
1035 DEBUG("rlm_ldap::ldap_groupcmp: Group %s not found or user is not a member.",(char *)check->strvalue);
1039 snprintf(filter,sizeof(filter), "(objectclass=*)");
1040 if ((conn_id = ldap_get_conn(inst->conns,&conn,inst)) == -1){
1041 radlog(L_ERR, "rlm_ldap: Add ldap connections are in use");
1044 if ((res = perform_search(inst, conn, vp_user_dn->strvalue, LDAP_SCOPE_BASE,
1045 filter, group_attrs,&result)) != RLM_MODULE_OK){
1046 DEBUG("rlm_ldap::ldap_groupcmp: Search returned error");
1047 ldap_release_conn(conn_id, inst->conns);
1051 if ((msg = ldap_first_entry(conn->ld, result)) == NULL) {
1052 DEBUG("rlm_ldap::ldap_groupcmp: ldap_first_entry() failed");
1053 ldap_release_conn(conn_id,inst->conns);
1054 ldap_msgfree(result);
1057 if ((vals = ldap_get_values(conn->ld, msg, inst->groupmemb_attr)) != NULL) {
1060 for (;i < ldap_count_values(vals);i++){
1061 if (strchr(vals[i],',') != NULL){
1062 /* This looks like a DN */
1063 LDAPMessage *gr_result = NULL;
1064 snprintf(filter,sizeof(filter), "(%s=%s)",
1065 inst->groupname_attr,
1066 (char *)check->strvalue);
1067 if ((res = perform_search(inst, conn, vals[i],
1068 LDAP_SCOPE_BASE, filter,
1069 attrs, &gr_result)) != RLM_MODULE_OK){
1070 if (res != RLM_MODULE_NOTFOUND){
1071 DEBUG("rlm_ldap::ldap_groupcmp: \
1072 Search returned error");
1073 ldap_value_free(vals);
1074 ldap_msgfree(result);
1075 ldap_release_conn(conn_id,inst->conns);
1079 ldap_msgfree(gr_result);
1084 if (strcmp(vals[i],(char *)check->strvalue) == 0){
1090 ldap_value_free(vals);
1091 ldap_msgfree(result);
1093 DEBUG("rlm_ldap::groupcmp: Group %s not found \
1094 or user not a member",
1095 (char *)check->strvalue);
1096 ldap_release_conn(conn_id,inst->conns);
1100 DEBUG("rlm_ldap::ldap_groupcmp: ldap_get_values() failed");
1101 ldap_msgfree(result);
1102 ldap_release_conn(conn_id,inst->conns);
1106 DEBUG("rlm_ldap::ldap_groupcmp: User found in group %s",(char *)check->strvalue);
1107 ldap_release_conn(conn_id,inst->conns);
1114 * Do an xlat on an LDAP URL
1117 static int ldap_xlat(void *instance, REQUEST *request, char *fmt, char *out,
1118 size_t freespace, RADIUS_ESCAPE_STRING func)
1120 char url[MAX_FILTER_STR_LEN];
1123 ldap_instance *inst = instance;
1124 LDAPURLDesc *ldap_url;
1125 LDAPMessage *result = NULL;
1126 LDAPMessage *msg = NULL;
1131 DEBUG("rlm_ldap: - ldap_xlat");
1132 if (!radius_xlat(url, sizeof(url), fmt, request, func)) {
1133 radlog (L_ERR, "rlm_ldap: Unable to create LDAP URL.\n");
1136 if (!ldap_is_ldap_url(url)){
1137 radlog (L_ERR, "rlm_ldap: String passed does not look like an LDAP URL.\n");
1140 if (ldap_url_parse(url,&ldap_url)){
1141 radlog (L_ERR, "rlm_ldap: LDAP URL parse failed.\n");
1144 if (ldap_url->lud_attrs == NULL || ldap_url->lud_attrs[0] == NULL || \
1145 ( ldap_url->lud_attrs[1] != NULL || ( ! strlen(ldap_url->lud_attrs[0]) || \
1146 ! strcmp(ldap_url->lud_attrs[0],"*") ) ) ){
1147 radlog (L_ERR, "rlm_ldap: Invalid Attribute(s) request.\n");
1148 ldap_free_urldesc(ldap_url);
1151 if (ldap_url->lud_host){
1152 if (strncmp(inst->server,ldap_url->lud_host,strlen(inst->server)) != 0 || \
1153 ldap_url->lud_port != inst->port){
1154 DEBUG("rlm_ldap: Requested server/port is not known to this module instance.");
1155 ldap_free_urldesc(ldap_url);
1159 if ((conn_id = ldap_get_conn(inst->conns,&conn,inst)) == -1){
1160 radlog(L_ERR, "rlm_ldap: All ldap connections are in use");
1161 ldap_free_urldesc(ldap_url);
1164 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){
1165 if (res == RLM_MODULE_NOTFOUND){
1166 DEBUG("rlm_ldap: Search returned not found");
1167 ldap_free_urldesc(ldap_url);
1168 ldap_release_conn(conn_id,inst->conns);
1171 DEBUG("rlm_ldap: Search returned error");
1172 ldap_free_urldesc(ldap_url);
1173 ldap_release_conn(conn_id,inst->conns);
1176 if ((msg = ldap_first_entry(conn->ld, result)) == NULL){
1177 DEBUG("rlm_ldap: ldap_first_entry() failed");
1178 ldap_msgfree(result);
1179 ldap_free_urldesc(ldap_url);
1180 ldap_release_conn(conn_id,inst->conns);
1183 if ((vals = ldap_get_values(conn->ld, msg, ldap_url->lud_attrs[0])) != NULL) {
1184 ret = strlen(vals[0]);
1185 if (ret > freespace){
1186 DEBUG("rlm_ldap: Insufficient string space");
1187 ldap_free_urldesc(ldap_url);
1188 ldap_value_free(vals);
1189 ldap_msgfree(result);
1190 ldap_release_conn(conn_id,inst->conns);
1193 DEBUG("rlm_ldap: Adding attribute %s, value: %s",ldap_url->lud_attrs[0],vals[0]);
1194 strncpy(out,vals[0],ret);
1195 ldap_value_free(vals);
1200 ldap_msgfree(result);
1201 ldap_free_urldesc(ldap_url);
1202 ldap_release_conn(conn_id,inst->conns);
1204 DEBUG("rlm_ldap: - ldap_xlat end");
1210 /******************************************************************************
1212 * Function: rlm_ldap_authorize
1214 * Purpose: Check if user is authorized for remote access
1216 ******************************************************************************/
1218 ldap_authorize(void *instance, REQUEST * request)
1220 LDAPMessage *result = NULL;
1221 LDAPMessage *msg = NULL;
1222 LDAPMessage *def_msg = NULL;
1223 LDAPMessage *def_attr_msg = NULL;
1224 LDAPMessage *def_result = NULL;
1225 LDAPMessage *def_attr_result = NULL;
1226 ldap_instance *inst = instance;
1227 char *user_dn = NULL;
1228 char filter[MAX_FILTER_STR_LEN];
1229 char basedn[MAX_FILTER_STR_LEN];
1230 VALUE_PAIR *check_tmp;
1231 VALUE_PAIR *reply_tmp;
1233 VALUE_PAIR **check_pairs, **reply_pairs;
1235 VALUE_PAIR *module_fmsg_vp;
1236 VALUE_PAIR *user_profile;
1237 char module_fmsg[MAX_STRING_LEN];
1240 int added_known_password = 0;
1242 DEBUG("rlm_ldap: - authorize");
1244 if (!request->username){
1245 radlog(L_AUTH, "rlm_ldap: Attribute \"User-Name\" is required for authentication.\n");
1246 return RLM_MODULE_INVALID;
1249 check_pairs = &request->config_items;
1250 reply_pairs = &request->reply->vps;
1253 * Check for valid input, zero length names not permitted
1255 if (request->username->strvalue == 0) {
1256 radlog(L_ERR, "rlm_ldap: zero length username not permitted\n");
1257 return RLM_MODULE_INVALID;
1259 DEBUG("rlm_ldap: performing user authorization for %s",
1260 request->username->strvalue);
1262 if (!radius_xlat(filter, sizeof(filter), inst->filter,
1263 request, ldap_escape_func)) {
1264 radlog (L_ERR, "rlm_ldap: unable to create filter.\n");
1265 return RLM_MODULE_INVALID;
1268 if (!radius_xlat(basedn, sizeof(basedn), inst->basedn,
1269 request, ldap_escape_func)) {
1270 radlog (L_ERR, "rlm_ldap: unable to create basedn.\n");
1271 return RLM_MODULE_INVALID;
1274 if ((conn_id = ldap_get_conn(inst->conns,&conn,inst)) == -1){
1275 radlog(L_ERR, "rlm_ldap: All ldap connections are in use");
1276 return RLM_MODULE_FAIL;
1278 if ((res = perform_search(instance, conn, basedn, LDAP_SCOPE_SUBTREE, filter, inst->atts, &result)) != RLM_MODULE_OK) {
1279 DEBUG("rlm_ldap: search failed");
1280 if (res == RLM_MODULE_NOTFOUND){
1281 snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: User not found");
1282 module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
1283 pairadd(&request->packet->vps, module_fmsg_vp);
1285 ldap_release_conn(conn_id,inst->conns);
1288 if ((msg = ldap_first_entry(conn->ld, result)) == NULL) {
1289 DEBUG("rlm_ldap: ldap_first_entry() failed");
1290 ldap_msgfree(result);
1291 ldap_release_conn(conn_id,inst->conns);
1292 return RLM_MODULE_FAIL;
1294 if ((user_dn = ldap_get_dn(conn->ld, msg)) == NULL) {
1295 DEBUG("rlm_ldap: ldap_get_dn() failed");
1296 ldap_msgfree(result);
1297 ldap_release_conn(conn_id,inst->conns);
1298 return RLM_MODULE_FAIL;
1301 * Adding new attribute containing DN for LDAP object associated with
1304 pairadd(&request->packet->vps, pairmake("Ldap-UserDn", user_dn, T_OP_EQ));
1305 ldap_memfree(user_dn);
1308 /* Remote access is controled by attribute of the user object */
1309 if (inst->access_attr) {
1310 if ((vals = ldap_get_values(conn->ld, msg, inst->access_attr)) != NULL) {
1311 if (inst->default_allow){
1312 DEBUG("rlm_ldap: checking if remote access for %s is allowed by %s", request->username->strvalue, inst->access_attr);
1313 if (!strncmp(vals[0], "FALSE", 5)) {
1314 DEBUG("rlm_ldap: dialup access disabled");
1315 snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: Access Attribute denies access");
1316 module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
1317 pairadd(&request->packet->vps, module_fmsg_vp);
1318 ldap_msgfree(result);
1319 ldap_value_free(vals);
1320 ldap_release_conn(conn_id,inst->conns);
1321 return RLM_MODULE_USERLOCK;
1323 ldap_value_free(vals);
1326 DEBUG("rlm_ldap: %s attribute exists - access denied by default", inst->access_attr);
1327 snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: Access Attribute denies access");
1328 module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
1329 pairadd(&request->packet->vps, module_fmsg_vp);
1330 ldap_msgfree(result);
1331 ldap_value_free(vals);
1332 ldap_release_conn(conn_id,inst->conns);
1333 return RLM_MODULE_USERLOCK;
1336 if (inst->default_allow){
1337 DEBUG("rlm_ldap: no %s attribute - access denied by default", inst->access_attr);
1338 snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: Access Attribute denies access");
1339 module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
1340 pairadd(&request->packet->vps, module_fmsg_vp);
1341 ldap_msgfree(result);
1342 ldap_release_conn(conn_id,inst->conns);
1343 return RLM_MODULE_USERLOCK;
1349 * Check for the default profile entry. If it exists then add the
1350 * attributes it contains in the check and reply pairs
1353 user_profile = pairfind(request->config_items, PW_USER_PROFILE);
1354 if (inst->default_profile || user_profile){
1355 char *profile = inst->default_profile;
1357 strNcpy(filter,inst->base_filter,sizeof(filter));
1359 profile = user_profile->strvalue;
1360 if (profile && strlen(profile)){
1361 if ((res = perform_search(instance, conn,
1362 profile, LDAP_SCOPE_BASE,
1363 filter, inst->atts, &def_result)) == RLM_MODULE_OK){
1364 if ((def_msg = ldap_first_entry(conn->ld,def_result))){
1365 if ((check_tmp = ldap_pairget(conn->ld,def_msg,inst->check_item_map,check_pairs,1))) {
1367 pairxlatmove(request, check_pairs, &check_tmp);
1368 pairfree(&check_tmp);
1371 pairadd(check_pairs,check_tmp);
1373 if ((reply_tmp = ldap_pairget(conn->ld,def_msg,inst->reply_item_map,reply_pairs,0))) {
1375 pairxlatmove(request, reply_pairs, &reply_tmp);
1376 pairfree(&reply_tmp);
1379 pairadd(reply_pairs,reply_tmp);
1382 ldap_msgfree(def_result);
1384 DEBUG("rlm_ldap: default_profile/user-profile search failed");
1389 * Check for the profile attribute. If it exists, we assume that it
1390 * contains the DN of an entry containg a profile for the user. That
1391 * way we can have different general profiles for various user groups
1392 * (students,faculty,staff etc)
1395 if (inst->profile_attr){
1396 if ((vals = ldap_get_values(conn->ld, msg, inst->profile_attr)) != NULL) {
1398 strNcpy(filter,inst->base_filter,sizeof(filter));
1399 while(vals[i] != NULL && strlen(vals[i])){
1400 if ((res = perform_search(instance, conn,
1401 vals[i], LDAP_SCOPE_BASE,
1402 filter, inst->atts, &def_attr_result)) == RLM_MODULE_OK){
1403 if ((def_attr_msg = ldap_first_entry(conn->ld,def_attr_result))){
1404 if ((check_tmp = ldap_pairget(conn->ld,def_attr_msg,inst->check_item_map,check_pairs,1))) {
1406 pairxlatmove(request, check_pairs, &check_tmp);
1407 pairfree(&check_tmp);
1410 pairadd(check_pairs,check_tmp);
1412 if ((reply_tmp = ldap_pairget(conn->ld,def_attr_msg,inst->reply_item_map,reply_pairs,0))) {
1414 pairxlatmove(request, reply_pairs, &reply_tmp);
1415 pairfree(&reply_tmp);
1418 pairadd(reply_pairs,reply_tmp);
1421 ldap_msgfree(def_attr_result);
1423 DEBUG("rlm_ldap: profile_attribute search failed");
1426 ldap_value_free(vals);
1429 if (inst->passwd_attr && strlen(inst->passwd_attr)){
1430 #ifdef NOVELL_UNIVERSAL_PASSWORD
1431 if(strcasecmp(inst->passwd_attr,"nspmPassword")!= 0){
1433 VALUE_PAIR *passwd_item;
1435 if ((passwd_item = pairfind(request->config_items, PW_PASSWORD)) == NULL){
1437 char *passwd_val = NULL;
1440 if ((passwd_vals = ldap_get_values(conn->ld,msg,inst->passwd_attr)) != NULL){
1442 while(passwd_vals[i] != NULL){
1443 if (strlen(passwd_vals[i])){
1444 passwd_val = passwd_vals[i];
1446 if (inst->passwd_hdr && strlen(inst->passwd_hdr)){
1447 passwd_val = strstr(passwd_val,inst->passwd_hdr);
1448 if (passwd_val != NULL)
1449 passwd_val += strlen(inst->passwd_hdr);
1451 DEBUG("rlm_ldap: Password header not found in password %s for user %s", passwd_vals[0],request->username->strvalue);
1454 if ((passwd_item = paircreate(PW_PASSWORD,PW_TYPE_STRING)) == NULL){
1455 radlog(L_ERR|L_CONS, "no memory");
1456 ldap_value_free(passwd_vals);
1457 ldap_msgfree(result);
1458 ldap_release_conn(conn_id,inst->conns);
1459 return RLM_MODULE_FAIL;
1461 added_known_password = 1;
1462 passwd_len = strlen(passwd_val);
1463 strncpy(passwd_item->strvalue,passwd_val,MAX_STRING_LEN - 1);
1464 passwd_item->length = (passwd_len > (MAX_STRING_LEN - 1)) ? (MAX_STRING_LEN - 1) : passwd_len;
1465 pairadd(&request->config_items,passwd_item);
1466 DEBUG("rlm_ldap: Added password %s in check items",passwd_item->strvalue);
1471 ldap_value_free(passwd_vals);
1474 #ifdef NOVELL_UNIVERSAL_PASSWORD
1478 * Read Universal Password from eDirectory
1480 VALUE_PAIR *passwd_item;
1481 VALUE_PAIR *vp_user_dn;
1483 char *universal_password = NULL;
1484 int universal_password_len = UNIVERSAL_PASS_LEN;
1485 char *passwd_val = NULL;
1489 if ((passwd_item = pairfind(request->config_items, PW_PASSWORD)) == NULL){
1491 universal_password = rad_malloc(universal_password_len);
1492 memset(universal_password, 0, universal_password_len);
1494 vp_user_dn = pairfind(request->packet->vps,PW_LDAP_USERDN);
1495 res = nmasldap_get_password(conn->ld,vp_user_dn->strvalue,&universal_password_len,universal_password);
1498 passwd_val = universal_password;
1500 if (inst->passwd_hdr && strlen(inst->passwd_hdr)){
1501 passwd_val = strstr(passwd_val,inst->passwd_hdr);
1503 if (passwd_val != NULL)
1504 passwd_val += strlen((char*)inst->passwd_hdr);
1506 DEBUG("rlm_ldap: Password header not found in password %s for user %s ",passwd_val,request->username->strvalue);
1510 if ((passwd_item = paircreate(PW_PASSWORD,PW_TYPE_STRING)) == NULL){
1511 radlog(L_ERR, "rlm_ldap: Could not allocate memory. Aborting.");
1512 ldap_msgfree(result);
1513 ldap_release_conn(conn_id,inst->conns);
1514 memset(universal_password, 0, universal_password_len);
1515 free(universal_password);
1516 return RLM_MODULE_FAIL;
1519 added_known_password = 1;
1520 passwd_len = strlen(passwd_val);
1521 strncpy(passwd_item->strvalue,passwd_val,MAX_STRING_LEN - 1);
1522 passwd_item->length = (passwd_len > (MAX_STRING_LEN - 1)) ? (MAX_STRING_LEN - 1) : passwd_len;
1523 pairadd(&request->config_items,passwd_item);
1528 VALUE_PAIR *vp_inst, *vp_apc;
1529 int inst_attr, apc_attr;
1531 dattr = dict_attrbyname("LDAP-Instance");
1532 inst_attr = dattr->attr;
1533 dattr = dict_attrbyname("eDir-APC");
1534 apc_attr = dattr->attr;
1536 vp_inst = pairfind(request->config_items, inst_attr);
1537 if(vp_inst == NULL){
1539 * The authorize method of no other LDAP module instance has
1540 * processed this request.
1542 if ((vp_inst = paircreate(inst_attr, PW_TYPE_STRING)) == NULL){
1543 radlog(L_ERR, "rlm_ldap: Could not allocate memory. Aborting.");
1544 ldap_msgfree(result);
1545 ldap_release_conn(conn_id, inst->conns);
1546 memset(universal_password, 0, universal_password_len);
1547 free(universal_password);
1548 return RLM_MODULE_FAIL;
1550 strcpy(vp_inst->strvalue, inst->xlat_name);
1551 vp_inst->length = strlen(vp_inst->strvalue);
1552 pairadd(&request->config_items, vp_inst);
1555 * Inform the authenticate / post-auth method about the presence
1556 * of UP in the config items list and whether eDirectory account
1557 * policy check is to be performed or not.
1559 if ((vp_apc = paircreate(apc_attr, PW_TYPE_STRING)) == NULL){
1560 radlog(L_ERR, "rlm_ldap: Could not allocate memory. Aborting.");
1561 ldap_msgfree(result);
1562 ldap_release_conn(conn_id, inst->conns);
1563 memset(universal_password, 0, universal_password_len);
1564 free(universal_password);
1565 return RLM_MODULE_FAIL;
1568 if(!inst->edir_account_policy_check){
1570 strcpy(vp_apc->strvalue, "1");
1572 /* Perform eDirectory account-policy check */
1573 strcpy(vp_apc->strvalue, "2");
1576 pairadd(&request->config_items, vp_apc);
1581 DEBUG("rlm_ldap: Added the eDirectory password in check items");
1585 DEBUG("rlm_ldap: Error reading Universal Password.Return Code = %d",res);
1588 memset(universal_password, 0, universal_password_len);
1589 free(universal_password);
1597 VALUE_PAIR *vp_auth_opt;
1602 dattr = dict_attrbyname("eDir-Auth-Option");
1603 auth_opt_attr = dattr->attr;
1604 if(pairfind(*check_pairs, auth_opt_attr) == NULL){
1605 if ((auth_option = ldap_get_values(conn->ld, msg, "sasDefaultLoginSequence")) != NULL) {
1606 if ((vp_auth_opt = paircreate(auth_opt_attr, PW_TYPE_STRING)) == NULL){
1607 radlog(L_ERR, "rlm_ldap: Could not allocate memory. Aborting.");
1608 ldap_msgfree(result);
1609 ldap_release_conn(conn_id, inst->conns);
1611 strcpy(vp_auth_opt->strvalue, auth_option[0]);
1612 vp_auth_opt->length = strlen(auth_option[0]);
1613 pairadd(&request->config_items, vp_auth_opt);
1615 DEBUG("rlm_ldap: No default NMAS login sequence");
1622 DEBUG("rlm_ldap: looking for check items in directory...");
1624 if ((check_tmp = ldap_pairget(conn->ld, msg, inst->check_item_map,check_pairs,1)) != NULL) {
1626 pairxlatmove(request, check_pairs, &check_tmp);
1627 pairfree(&check_tmp);
1630 pairadd(check_pairs,check_tmp);
1634 DEBUG("rlm_ldap: looking for reply items in directory...");
1637 if ((reply_tmp = ldap_pairget(conn->ld, msg, inst->reply_item_map,reply_pairs,0)) != NULL) {
1639 pairxlatmove(request, reply_pairs, &reply_tmp);
1640 pairfree(&reply_tmp);
1643 pairadd(reply_pairs,reply_tmp);
1646 if (inst->do_comp && paircmp(request,request->packet->vps,*check_pairs,reply_pairs) != 0){
1648 /* Don't perform eDirectory APC if RADIUS authorize fails */
1653 dattr = dict_attrbyname("eDir-APC");
1654 apc_attr = dattr->attr;
1656 vp_apc = pairfind(request->config_items, apc_attr);
1658 vp_apc->strvalue[0] = '1';
1661 DEBUG("rlm_ldap: Pairs do not match. Rejecting user.");
1662 snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: Pairs do not match");
1663 module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
1664 pairadd(&request->packet->vps, module_fmsg_vp);
1665 ldap_msgfree(result);
1666 ldap_release_conn(conn_id,inst->conns);
1668 return RLM_MODULE_REJECT;
1672 * Module should default to LDAP authentication if no Auth-Type
1673 * specified. Note that we do this ONLY if configured, AND we
1674 * set the Auth-Type to our module name, which allows multiple
1675 * ldap instances to work.
1677 if (inst->set_auth_type &&
1678 (pairfind(*check_pairs, PW_AUTH_TYPE) == NULL) &&
1679 request->password &&
1680 (request->password->attribute == PW_USER_PASSWORD) &&
1681 !added_known_password) {
1682 pairadd(check_pairs, pairmake("Auth-Type", inst->xlat_name, T_OP_EQ));
1683 DEBUG("rlm_ldap: Setting Auth-Type = %s", inst->xlat_name);
1686 DEBUG("rlm_ldap: user %s authorized to use remote access",
1687 request->username->strvalue);
1688 ldap_msgfree(result);
1689 ldap_release_conn(conn_id,inst->conns);
1691 return RLM_MODULE_OK;
1694 /*****************************************************************************
1696 * Function: rlm_ldap_authenticate
1698 * Purpose: Check the user's password against ldap database
1700 *****************************************************************************/
1702 ldap_authenticate(void *instance, REQUEST * request)
1705 LDAPMessage *result, *msg;
1706 ldap_instance *inst = instance;
1707 char *user_dn, *attrs[] = {"uid", NULL};
1708 char filter[MAX_FILTER_STR_LEN];
1709 char basedn[MAX_FILTER_STR_LEN];
1711 VALUE_PAIR *vp_user_dn;
1712 VALUE_PAIR *module_fmsg_vp;
1713 char module_fmsg[MAX_STRING_LEN];
1720 DEBUG("rlm_ldap: - authenticate");
1723 * Ensure that we're being passed a plain-text password, and not
1727 if (!request->username) {
1728 radlog(L_AUTH, "rlm_ldap: Attribute \"User-Name\" is required for authentication.\n");
1729 return RLM_MODULE_INVALID;
1732 if (!request->password){
1733 radlog(L_AUTH, "rlm_ldap: Attribute \"User-Password\" is required for authentication.");
1734 return RLM_MODULE_INVALID;
1737 if(request->password->attribute != PW_PASSWORD) {
1738 radlog(L_AUTH, "rlm_ldap: Attribute \"User-Password\" is required for authentication. Cannot use \"%s\".", request->password->name);
1739 return RLM_MODULE_INVALID;
1742 if (request->password->length == 0) {
1743 snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: empty password supplied");
1744 module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
1745 pairadd(&request->packet->vps, module_fmsg_vp);
1746 return RLM_MODULE_INVALID;
1750 * Check that we don't have any failed connections. If we do there's no real need
1751 * of runing. Also give it another chance if we have a lot of failed connections.
1753 if (inst->failed_conns > MAX_FAILED_CONNS_END)
1754 inst->failed_conns = 0;
1755 if (inst->failed_conns > MAX_FAILED_CONNS_START){
1756 inst->failed_conns++;
1757 return RLM_MODULE_FAIL;
1761 DEBUG("rlm_ldap: login attempt by \"%s\" with password \"%s\"",
1762 request->username->strvalue, request->password->strvalue);
1764 while((vp_user_dn = pairfind(request->packet->vps, PW_LDAP_USERDN)) == NULL) {
1765 if (!radius_xlat(filter, sizeof(filter), inst->filter,
1766 request, ldap_escape_func)) {
1767 radlog (L_ERR, "rlm_ldap: unable to create filter.\n");
1768 return RLM_MODULE_INVALID;
1771 if (!radius_xlat(basedn, sizeof(basedn), inst->basedn,
1772 request, ldap_escape_func)) {
1773 radlog (L_ERR, "rlm_ldap: unable to create basedn.\n");
1774 return RLM_MODULE_INVALID;
1777 if ((conn_id = ldap_get_conn(inst->conns,&conn,inst)) == -1){
1778 radlog(L_ERR, "rlm_ldap: All ldap connections are in use");
1779 return RLM_MODULE_FAIL;
1781 if ((res = perform_search(instance, conn, basedn, LDAP_SCOPE_SUBTREE, filter, attrs, &result)) != RLM_MODULE_OK) {
1782 if (res == RLM_MODULE_NOTFOUND){
1783 snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: User not found");
1784 module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
1785 pairadd(&request->packet->vps, module_fmsg_vp);
1787 ldap_release_conn(conn_id,inst->conns);
1790 if ((msg = ldap_first_entry(conn->ld, result)) == NULL) {
1791 ldap_msgfree(result);
1792 ldap_release_conn(conn_id,inst->conns);
1793 return RLM_MODULE_FAIL;
1795 if ((user_dn = ldap_get_dn(conn->ld, msg)) == NULL) {
1796 DEBUG("rlm_ldap: ldap_get_dn() failed");
1797 ldap_msgfree(result);
1798 ldap_release_conn(conn_id,inst->conns);
1799 return RLM_MODULE_FAIL;
1801 ldap_release_conn(conn_id,inst->conns);
1802 pairadd(&request->packet->vps, pairmake("Ldap-UserDn", user_dn, T_OP_EQ));
1803 ldap_memfree(user_dn);
1804 ldap_msgfree(result);
1807 user_dn = vp_user_dn->strvalue;
1809 DEBUG("rlm_ldap: user DN: %s", user_dn);
1812 ld_user = ldap_connect(instance, user_dn, request->password->strvalue,
1816 /* Don't perform eDirectory APC again after attempting to bind here. */
1821 VALUE_PAIR *vp_auth_opt, *vp_state;
1824 char host_ipaddr[32];
1826 int auth_state = -1;
1827 char *challenge = NULL;
1828 int challenge_len = MAX_CHALLENGE_LEN;
1831 dattr = dict_attrbyname("eDir-APC");
1832 apc_attr = dattr->attr;
1833 vp_apc = pairfind(request->config_items, apc_attr);
1834 if(vp_apc && vp_apc->strvalue[0] == '2')
1835 vp_apc->strvalue[0] = '3';
1839 dattr = dict_attrbyname("eDir-Auth-Option");
1840 auth_opt_attr = dattr->attr;
1842 vp_auth_opt = pairfind(request->config_items, auth_opt_attr);
1846 DEBUG("rlm_ldap: ldap auth option = %s", vp_auth_opt->strvalue);
1847 strncpy(seq, vp_auth_opt->strvalue, vp_auth_opt->length);
1848 seq[vp_auth_opt->length] = '\0';
1849 if( strcmp(seq, "<No Default>") ){
1851 /* Get the client IP address to check for packet validity */
1852 inet_ntop(AF_INET, &request->packet->src_ipaddr, host_ipaddr, sizeof(host_ipaddr));
1854 /* challenge variable is used to receive the challenge from the
1855 * Token method (if any) and also to send the state attribute
1856 * in case the request packet is a reply to a challenge
1858 challenge = rad_malloc(MAX_CHALLENGE_LEN);
1860 /* If state attribute present in request it is a reply to challenge. */
1861 if((vp_state = pairfind(request->packet->vps, PW_STATE))!= NULL ){
1862 DEBUG("rlm_ldap: Response to Access-Challenge");
1863 strncpy(challenge, vp_state->strvalue, sizeof(challenge));
1864 challenge_len = vp_state->length;
1865 challenge[challenge_len] = 0;
1869 if ((conn_id = ldap_get_conn(inst->conns, &conn1, inst)) == -1){
1870 radlog(L_ERR, "rlm_ldap: All ldap connections are in use");
1871 res = RLM_MODULE_FAIL;
1875 radlog(L_ERR, "rlm_ldap: NULL connection handle passed");
1876 return RLM_MODULE_FAIL;
1879 if (conn1->failed_conns > MAX_FAILED_CONNS_START){
1880 conn1->failed_conns++;
1881 if (conn1->failed_conns >= MAX_FAILED_CONNS_END){
1882 conn1->failed_conns = MAX_FAILED_CONNS_RESTART;
1887 if (!conn1->bound || conn1->ld == NULL) {
1888 DEBUG2("rlm_ldap: attempting LDAP reconnection");
1890 DEBUG2("rlm_ldap: closing existing LDAP connection");
1891 ldap_unbind_s(conn1->ld);
1893 if ((conn1->ld = ldap_connect(instance, inst->login,inst->password, 0, &res, NULL)) == NULL) {
1894 radlog(L_ERR, "rlm_ldap: (re)connection attempt failed");
1895 conn1->failed_conns++;
1896 return (RLM_MODULE_FAIL);
1899 conn1->failed_conns = 0;
1901 DEBUG("rlm_ldap: Performing NMAS Authentication for user: %s, seq: %s \n", user_dn,seq);
1903 res = radLdapXtnNMASAuth(conn1->ld, user_dn, request->password->strvalue, seq, host_ipaddr, &challenge_len, challenge, &auth_state );
1907 ldap_release_conn(conn_id,inst->conns);
1908 if ( auth_state == -1)
1909 res = RLM_MODULE_FAIL;
1910 if ( auth_state != REQUEST_CHALLENGED){
1911 if (auth_state == REQUEST_ACCEPTED){
1912 DEBUG("rlm_ldap: user %s authenticated succesfully",request->username->strvalue);
1913 res = RLM_MODULE_OK;
1914 }else if(auth_state == REQUEST_REJECTED){
1915 DEBUG("rlm_ldap: user %s authentication failed",request->username->strvalue);
1916 res = RLM_MODULE_REJECT;
1919 /* Request challenged. Generate Reply-Message attribute with challenge data */
1920 pairadd(&request->reply->vps,pairmake("Reply-Message", challenge, T_OP_EQ));
1921 /* Generate state attribute */
1922 state = rad_malloc(MAX_CHALLENGE_LEN);
1923 (void) sprintf(state, "%s%s", challenge, challenge);
1924 vp_state = paircreate(PW_STATE, PW_TYPE_OCTETS);
1925 memcpy(vp_state->strvalue, state, strlen(state));
1926 vp_state->length = strlen(state);
1927 pairadd(&request->reply->vps, vp_state);
1929 /* Mark the packet as a Acceess-Challenge Packet */
1930 request->reply->code = PW_ACCESS_CHALLENGE;
1931 DEBUG("rlm_ldap: Sending Access-Challenge.");
1932 res = RLM_MODULE_HANDLED;
1937 case LDAP_SERVER_DOWN:
1938 radlog(L_ERR, "rlm_ldap: nmas authentication failed: LDAP connection lost."); conn->failed_conns++;
1939 if (conn->failed_conns <= MAX_FAILED_CONNS_START){
1940 radlog(L_INFO, "rlm_ldap: Attempting reconnect");
1946 return RLM_MODULE_FAIL;
1948 ldap_release_conn(conn_id,inst->conns);
1951 return RLM_MODULE_FAIL;
1957 ld_user = ldap_connect(instance, user_dn, request->password->strvalue,
1961 /* 'err' contains the LDAP connection error description */
1962 DEBUG("rlm_ldap: %s", err);
1963 pairadd(&request->reply->vps, pairmake("Reply-Message", err, T_OP_EQ));
1964 ldap_memfree((void *)err);
1969 if (ld_user == NULL){
1970 if (res == RLM_MODULE_REJECT){
1971 inst->failed_conns = 0;
1972 snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: Bind as user failed");
1973 module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
1974 pairadd(&request->packet->vps, module_fmsg_vp);
1976 if (res == RLM_MODULE_FAIL){
1977 DEBUG("rlm_ldap: ldap_connect() failed");
1978 inst->failed_conns++;
1983 DEBUG("rlm_ldap: user %s authenticated succesfully",
1984 request->username->strvalue);
1985 ldap_unbind_s(ld_user);
1986 inst->failed_conns = 0;
1988 return RLM_MODULE_OK;
1992 /*****************************************************************************
1994 * Function: rlm_ldap_postauth
1996 * Purpose: Perform eDirectory account policy check and failed-login reporting
1999 *****************************************************************************/
2001 ldap_postauth(void *instance, REQUEST * request)
2003 int res = RLM_MODULE_FAIL;
2004 int inst_attr, apc_attr;
2005 char password[UNIVERSAL_PASS_LEN];
2006 ldap_instance *inst = instance;
2008 VALUE_PAIR *vp_inst, *vp_apc;
2011 dattr = dict_attrbyname("LDAP-Instance");
2012 inst_attr = dattr->attr;
2013 dattr = dict_attrbyname("eDir-APC");
2014 apc_attr = dattr->attr;
2016 vp_inst = pairfind(request->config_items, inst_attr);
2019 * Check if the password in the config items list is the user's UP which has
2020 * been read in the authorize method of this instance of the LDAP module.
2022 if((vp_inst == NULL) || strcmp(vp_inst->strvalue, inst->xlat_name))
2023 return RLM_MODULE_NOOP;
2025 vp_apc = pairfind(request->config_items, apc_attr);
2027 switch(vp_apc->strvalue[0]){
2029 /* Account policy check not enabled */
2031 /* Account policy check has been completed */
2032 res = RLM_MODULE_NOOP;
2036 int err, conn_id = -1;
2037 char *error_msg = NULL;
2038 VALUE_PAIR *vp_fdn, *vp_pwd;
2041 if(request->reply->code == PW_AUTHENTICATION_REJECT){
2042 /* Bind to eDirectory as the RADIUS user with a wrong password. */
2043 vp_pwd = pairfind(request->config_items, PW_PASSWORD);
2044 strcpy(password, vp_pwd->strvalue);
2045 if(strlen(password) > 0){
2046 if(password[0] != 'a'){
2052 strcpy(password, "dummy_password");
2054 res = RLM_MODULE_REJECT;
2056 /* Bind to eDirectory as the RADIUS user using the user's UP */
2057 vp_pwd = pairfind(request->config_items, PW_PASSWORD);
2059 DEBUG("rlm_ldap: User's Universal Password not in config items list.");
2060 return RLM_MODULE_FAIL;
2062 strcpy(password, vp_pwd->strvalue);
2065 if ((da = dict_attrbyname("Ldap-UserDn")) == NULL) {
2066 DEBUG("rlm_ldap: Attribute for user FDN not found in dictionary. Unable to proceed");
2067 return RLM_MODULE_FAIL;
2070 vp_fdn = pairfind(request->packet->vps, da->attr);
2072 DEBUG("rlm_ldap: User's FQDN not in config items list.");
2073 return RLM_MODULE_FAIL;
2076 if ((conn_id = ldap_get_conn(inst->apc_conns, &conn, inst)) == -1){
2077 radlog(L_ERR, "rlm_ldap: All ldap connections are in use");
2078 return RLM_MODULE_FAIL;
2082 * If there is an existing LDAP connection to the directory, bind over
2083 * it. Otherwise, establish a new connection.
2086 if (!conn->bound || conn->ld == NULL) {
2087 DEBUG2("rlm_ldap: attempting LDAP reconnection");
2089 DEBUG2("rlm_ldap: closing existing LDAP connection");
2090 ldap_unbind_s(conn->ld);
2092 if ((conn->ld = ldap_connect(instance, (char *)vp_fdn->strvalue, password, 0, &res, &error_msg)) == NULL) {
2093 radlog(L_ERR, "rlm_ldap: eDirectory account policy check failed.");
2095 if(error_msg != NULL){
2096 DEBUG("rlm_ldap: %s", error_msg);
2097 pairadd(&request->reply->vps, pairmake("Reply-Message", error_msg, T_OP_EQ));
2098 ldap_memfree((void *)error_msg);
2101 vp_apc->strvalue[0] = '3';
2102 ldap_release_conn(conn_id, inst->apc_conns);
2103 return RLM_MODULE_REJECT;
2106 }else if((err = ldap_simple_bind_s(conn->ld, (char *)vp_fdn->strvalue, password)) != LDAP_SUCCESS){
2107 if(err == LDAP_SERVER_DOWN){
2109 goto postauth_reconnect;
2111 DEBUG("rlm_ldap: eDirectory account policy check failed.");
2112 ldap_get_option(conn->ld, LDAP_OPT_ERROR_STRING, &error_msg);
2113 if(error_msg != NULL){
2114 DEBUG("rlm_ldap: %s", error_msg);
2115 pairadd(&request->reply->vps, pairmake("Reply-Message", error_msg, T_OP_EQ));
2116 ldap_memfree((void *)error_msg);
2118 vp_apc->strvalue[0] = '3';
2119 ldap_release_conn(conn_id, inst->apc_conns);
2120 return RLM_MODULE_REJECT;
2122 vp_apc->strvalue[0] = '3';
2123 ldap_release_conn(conn_id, inst->apc_conns);
2124 return RLM_MODULE_OK;
2132 ldap_connect(void *instance, const char *dn, const char *password, int auth, int *result, char **err)
2134 ldap_instance *inst = instance;
2136 int msgid, rc, ldap_version;
2141 #ifdef HAVE_LDAP_INITIALIZE
2142 DEBUG("rlm_ldap: (re)connect to %s, authentication %d", inst->server, auth);
2143 if (ldap_initialize(&ld, inst->server) != LDAP_SUCCESS) {
2144 radlog(L_ERR, "rlm_ldap: ldap_initialize() failed");
2145 *result = RLM_MODULE_FAIL;
2151 DEBUG("rlm_ldap: (re)connect to %s:%d, authentication %d", inst->server, inst->port, auth);
2152 if ((ld = ldap_init(inst->server, inst->port)) == NULL) {
2153 radlog(L_ERR, "rlm_ldap: ldap_init() failed");
2154 *result = RLM_MODULE_FAIL;
2158 if (ldap_set_option(ld, LDAP_OPT_NETWORK_TIMEOUT, (void *) &(inst->net_timeout)) != LDAP_OPT_SUCCESS) {
2159 radlog(L_ERR, "rlm_ldap: Could not set LDAP_OPT_NETWORK_TIMEOUT %ld.%ld", inst->net_timeout.tv_sec, inst->net_timeout.tv_usec);
2161 if (ldap_set_option(ld, LDAP_OPT_TIMELIMIT, (void *) &(inst->timelimit)) != LDAP_OPT_SUCCESS) {
2162 radlog(L_ERR, "rlm_ldap: Could not set LDAP_OPT_TIMELIMIT %d", inst->timelimit);
2164 if (inst->ldap_debug && ldap_set_option(NULL, LDAP_OPT_DEBUG_LEVEL, &(inst->ldap_debug)) != LDAP_OPT_SUCCESS) {
2165 radlog(L_ERR, "rlm_ldap: Could not set LDAP_OPT_DEBUG_LEVEL %d", inst->ldap_debug);
2167 ldap_version = LDAP_VERSION3;
2168 if (ldap_set_option(ld, LDAP_OPT_PROTOCOL_VERSION, &ldap_version) != LDAP_OPT_SUCCESS) {
2169 radlog(L_ERR, "rlm_ldap: Could not set LDAP version to V3");
2171 #ifdef HAVE_LDAP_START_TLS
2172 if(inst->tls_mode) {
2173 DEBUG("rlm_ldap: setting TLS mode to %d", inst->tls_mode);
2174 if(ldap_set_option(ld, LDAP_OPT_X_TLS,
2175 (void *) &(inst->tls_mode)) != LDAP_OPT_SUCCESS) {
2176 ldap_get_option(ld, LDAP_OPT_ERROR_NUMBER, &ldap_errno);
2177 radlog(L_ERR, "rlm_ldap: could not set LDAP_OPT_X_TLS option %s", ldap_err2string(ldap_errno));
2181 if(inst->tls_cacertfile != NULL) {
2182 DEBUG("rlm_ldap: setting TLS CACert File to %s", inst->tls_cacertfile);
2184 if ( ldap_set_option( NULL, LDAP_OPT_X_TLS_CACERTFILE,
2185 (void *) inst->tls_cacertfile )
2186 != LDAP_OPT_SUCCESS) {
2187 radlog(L_ERR, "rlm_ldap: could not set "
2188 "LDAP_OPT_X_TLS_CACERTFILE option to %s", inst->tls_cacertfile);
2192 if(inst->tls_cacertdir != NULL) {
2193 DEBUG("rlm_ldap: setting TLS CACert Directory to %s", inst->tls_cacertdir);
2195 if ( ldap_set_option( NULL, LDAP_OPT_X_TLS_CACERTDIR,
2196 (void *) inst->tls_cacertdir )
2197 != LDAP_OPT_SUCCESS) {
2198 radlog(L_ERR, "rlm_ldap: could not set "
2199 "LDAP_OPT_X_TLS_CACERTDIR option to %s", inst->tls_cacertdir);
2203 if( strcmp( TLS_DEFAULT_VERIFY, inst->tls_require_cert ) != 0 ) {
2204 DEBUG("rlm_ldap: setting TLS Require Cert to %s",
2205 inst->tls_require_cert);
2209 #ifdef HAVE_LDAP_INT_TLS_CONFIG
2211 if ( ldap_int_tls_config( NULL, LDAP_OPT_X_TLS_REQUIRE_CERT,
2212 (inst->tls_require_cert) )
2213 != LDAP_OPT_SUCCESS) {
2214 radlog(L_ERR, "rlm_ldap: could not set "
2215 "LDAP_OPT_X_TLS_REQUIRE_CERT option to %s",
2216 inst->tls_require_cert);
2221 if(inst->tls_certfile != NULL) {
2222 DEBUG("rlm_ldap: setting TLS Cert File to %s", inst->tls_certfile);
2224 if ( ldap_set_option( NULL, LDAP_OPT_X_TLS_CERTFILE,
2225 (void *) inst->tls_certfile )
2226 != LDAP_OPT_SUCCESS) {
2227 radlog(L_ERR, "rlm_ldap: could not set "
2228 "LDAP_OPT_X_TLS_CERTFILE option to %s",
2229 inst->tls_certfile);
2233 if(inst->tls_keyfile != NULL) {
2234 DEBUG("rlm_ldap: setting TLS Key File to %s", inst->tls_keyfile);
2236 if ( ldap_set_option( NULL, LDAP_OPT_X_TLS_KEYFILE,
2237 (void *) inst->tls_keyfile )
2238 != LDAP_OPT_SUCCESS) {
2239 radlog(L_ERR, "rlm_ldap: could not set "
2240 "LDAP_OPT_X_TLS_KEYFILE option to %s",
2245 if(inst->tls_randfile != NULL) {
2246 DEBUG("rlm_ldap: setting TLS Key File to %s", inst->tls_randfile);
2248 if ( ldap_set_option( NULL, LDAP_OPT_X_TLS_RANDOM_FILE,
2249 (void *) inst->tls_randfile )
2250 != LDAP_OPT_SUCCESS) {
2251 radlog(L_ERR, "rlm_ldap: could not set "
2252 "LDAP_OPT_X_TLS_RANDOM_FILE option to %s",
2253 inst->tls_randfile);
2256 if (inst->start_tls) {
2257 DEBUG("rlm_ldap: starting TLS");
2258 rc = ldap_start_tls_s(ld, NULL, NULL);
2259 if (rc != LDAP_SUCCESS) {
2260 DEBUG("rlm_ldap: ldap_start_tls_s()");
2261 ldap_get_option(ld, LDAP_OPT_ERROR_NUMBER, &ldap_errno);
2262 radlog(L_ERR, "rlm_ldap: could not start TLS %s", ldap_err2string(ldap_errno));
2263 *result = RLM_MODULE_FAIL;
2268 #endif /* HAVE_LDAP_START_TLS */
2271 DEBUG("rlm_ldap: bind as %s/%s to %s", dn, password, inst->server);
2274 DEBUG("rlm_ldap: bind as %s/%s to %s:%d", dn, password, inst->server, inst->port);
2276 msgid = ldap_bind(ld, dn, password,LDAP_AUTH_SIMPLE);
2278 ldap_get_option(ld, LDAP_OPT_ERROR_NUMBER, &ldap_errno);
2280 ldap_get_option(ld, LDAP_OPT_ERROR_STRING, err);
2283 radlog(L_ERR, "rlm_ldap: %s bind to %s failed: %s",
2284 dn, inst->server, ldap_err2string(ldap_errno));
2286 radlog(L_ERR, "rlm_ldap: %s bind to %s:%d failed: %s",
2287 dn, inst->server, inst->port,
2288 ldap_err2string(ldap_errno));
2290 *result = RLM_MODULE_FAIL;
2294 DEBUG("rlm_ldap: waiting for bind result ...");
2296 rc = ldap_result(ld, msgid, 1, &(inst->timeout), &res);
2299 DEBUG("rlm_ldap: ldap_result()");
2300 ldap_get_option(ld, LDAP_OPT_ERROR_NUMBER, &ldap_errno);
2302 ldap_get_option(ld, LDAP_OPT_ERROR_STRING, err);
2305 radlog(L_ERR, "rlm_ldap: %s bind to %s failed: %s",
2306 dn, inst->server, (rc == 0) ? "timeout" : ldap_err2string(ldap_errno));
2308 radlog(L_ERR, "rlm_ldap: %s bind to %s:%d failed: %s",
2309 dn, inst->server, inst->port,
2310 (rc == 0) ? "timeout" : ldap_err2string(ldap_errno));
2312 *result = RLM_MODULE_FAIL;
2316 ldap_errno = ldap_result2error(ld, res, 1);
2317 switch (ldap_errno) {
2319 DEBUG("rlm_ldap: Bind was successful");
2320 *result = RLM_MODULE_OK;
2323 case LDAP_INVALID_CREDENTIALS:
2325 DEBUG("rlm_ldap: Bind failed with invalid credentials");
2326 *result = RLM_MODULE_REJECT;
2329 radlog(L_ERR, "rlm_ldap: LDAP login failed: check identity, password settings in ldap section of radiusd.conf");
2330 *result = RLM_MODULE_FAIL;
2333 ldap_get_option(ld, LDAP_OPT_ERROR_STRING, err);
2339 radlog(L_ERR,"rlm_ldap: %s bind to %s failed %s",
2340 dn, inst->server, ldap_err2string(ldap_errno));
2342 radlog(L_ERR,"rlm_ldap: %s bind to %s:%d failed %s",
2343 dn, inst->server, inst->port,
2344 ldap_err2string(ldap_errno));
2345 *result = RLM_MODULE_FAIL;
2347 ldap_get_option(ld, LDAP_OPT_ERROR_STRING, err);
2351 if (*result != RLM_MODULE_OK) {
2358 /*****************************************************************************
2360 * Detach from the LDAP server and cleanup internal state.
2362 *****************************************************************************/
2364 ldap_detach(void *instance)
2366 ldap_instance *inst = instance;
2367 TLDAP_RADIUS *pair, *nextpair;
2370 free((char *) inst->server);
2372 free((char *) inst->login);
2374 free((char *) inst->password);
2376 free((char *) inst->basedn);
2377 if (inst->dictionary_mapping)
2378 free(inst->dictionary_mapping);
2380 free((char *) inst->filter);
2381 if (inst->base_filter)
2382 free((char *) inst->base_filter);
2383 if (inst->passwd_hdr)
2384 free((char *) inst->passwd_hdr);
2385 if (inst->passwd_attr)
2386 free((char *) inst->passwd_attr);
2387 if (inst->groupname_attr)
2388 free((char *) inst->groupname_attr);
2389 if (inst->groupmemb_filt)
2390 free((char *) inst->groupmemb_filt);
2391 if (inst->groupmemb_attr)
2392 free((char *) inst->groupmemb_attr);
2393 if (inst->access_attr)
2394 free((char *) inst->access_attr);
2395 if (inst->profile_attr)
2396 free((char *) inst->profile_attr);
2400 for(;i<inst->num_conns;i++){
2401 if (inst->conns[i].ld){
2402 ldap_unbind_s(inst->conns[i].ld);
2404 pthread_mutex_destroy(&inst->conns[i].mutex);
2410 if (inst->apc_conns){
2413 for(i = 0; i < inst->num_conns; i++){
2414 if (inst->apc_conns[i].ld){
2415 ldap_unbind_s(inst->apc_conns[i].ld);
2417 pthread_mutex_destroy(&inst->apc_conns[i].mutex);
2419 free(inst->apc_conns);
2423 pair = inst->check_item_map;
2425 while (pair != NULL) {
2426 nextpair = pair->next;
2428 free(pair->radius_attr);
2433 pair = inst->reply_item_map;
2435 while (pair != NULL) {
2436 nextpair = pair->next;
2438 free(pair->radius_attr);
2446 paircompare_unregister(PW_LDAP_GROUP, ldap_groupcmp);
2447 xlat_unregister(inst->xlat_name,ldap_xlat);
2448 free(inst->xlat_name);
2457 fieldcpy(char *string, char **uptr)
2462 while (*ptr == ' ' || *ptr == '\t') {
2467 while (*ptr != '"' && *ptr != '\0' && *ptr != '\n') {
2477 while (*ptr != ' ' && *ptr != '\t' && *ptr != '\0' && *ptr != '\n' &&
2478 *ptr != '=' && *ptr != ',') {
2486 /*****************************************************************************
2487 * Get RADIUS attributes from LDAP object
2488 * ( according to draft-adoba-radius-05.txt
2489 * <http://www.ietf.org/internet-drafts/draft-adoba-radius-05.txt> )
2491 *****************************************************************************/
2494 ldap_pairget(LDAP * ld, LDAPMessage * entry,
2495 TLDAP_RADIUS * item_map, VALUE_PAIR **pairs,char is_check)
2502 TLDAP_RADIUS *element;
2503 LRAD_TOKEN token, operator;
2504 int is_generic_attribute;
2505 char buf[MAX_STRING_LEN];
2506 VALUE_PAIR *pairlist = NULL;
2507 VALUE_PAIR *newpair = NULL;
2508 char do_xlat = FALSE;
2511 * check if there is a mapping from this LDAP attribute
2512 * to a RADIUS attribute
2514 for (element = item_map; element != NULL; element = element->next) {
2516 * No mapping, skip it.
2518 if ((vals = ldap_get_values(ld,entry,element->attr)) == NULL)
2522 * Check whether this is a one-to-one-mapped ldap
2523 * attribute or a generic attribute and set flag
2526 if (strcasecmp(element->radius_attr, GENERIC_ATTRIBUTE_ID)==0)
2527 is_generic_attribute = 1;
2529 is_generic_attribute = 0;
2532 * Find out how many values there are for the
2533 * attribute and extract all of them.
2535 vals_count = ldap_count_values(vals);
2537 for (vals_idx = 0; vals_idx < vals_count; vals_idx++) {
2538 value = vals[vals_idx];
2540 if (is_generic_attribute) {
2542 * This is a generic attribute.
2544 LRAD_TOKEN dummy; /* makes pairread happy */
2546 /* not sure if using pairread here is ok ... */
2547 if ( (newpair = pairread(&value, &dummy)) != NULL) {
2548 DEBUG("rlm_ldap: extracted attribute %s from generic item %s",
2549 newpair->name, vals[vals_idx]);
2550 pairadd(&pairlist, newpair);
2552 radlog(L_ERR, "rlm_ldap: parsing %s failed: %s",
2553 element->attr, vals[vals_idx]);
2557 * This is a one-to-one-mapped attribute
2560 operator = gettoken(&ptr, buf, sizeof(buf));
2561 if (operator < T_EQSTART || operator > T_EQEND) {
2562 /* no leading operator found */
2564 operator = T_OP_CMP_EQ;
2568 /* the value is after the operator */
2573 * Do xlat if the *entire* string
2576 if ((value[0] == '\'' || value[0] == '"' ||
2578 (value[0] == value[strlen(value)-1])) {
2580 token = gettoken(&ptr, buf, sizeof(buf));
2582 /* take the unquoted string */
2583 case T_SINGLE_QUOTED_STRING:
2584 case T_DOUBLE_QUOTED_STRING:
2588 /* the value will be xlat'ed later */
2589 case T_BACK_QUOTED_STRING:
2594 /* keep the original string */
2599 if (value[0] == '\0') {
2600 DEBUG("rlm_ldap: Attribute %s has no value", element->attr);
2604 DEBUG("rlm_ldap: Adding %s as %s, value %s & op=%d", element->attr, element->radius_attr, value, operator);
2609 newpair = pairmake(element->radius_attr,
2610 do_xlat ? NULL : value,
2612 if (newpair == NULL) {
2613 radlog(L_ERR, "rlm_ldap: Failed to create the pair: %s", librad_errstr);
2617 newpair->flags.do_xlat = 1;
2618 strNcpy(newpair->strvalue, buf,
2619 sizeof(newpair->strvalue));
2620 newpair->length = 0;
2624 * Add the pair into the packet.
2627 pairdelete(pairs, newpair->attribute);
2629 pairadd(&pairlist, newpair);
2632 ldap_value_free(vals);
2638 /* globally exported name */
2639 module_t rlm_ldap = {
2641 RLM_TYPE_THREAD_SAFE, /* type: reserved */
2642 NULL, /* initialization */
2643 ldap_instantiate, /* instantiation */
2645 ldap_authenticate, /* authentication */
2646 ldap_authorize, /* authorization */
2647 NULL, /* preaccounting */
2648 NULL, /* accounting */
2649 NULL, /* checksimul */
2650 NULL, /* pre-proxy */
2651 NULL, /* post-proxy */
2653 ldap_postauth /* post-auth */
2658 ldap_detach, /* detach */