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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
18 * Copyright 2004,2006 The FreeRADIUS Server Project.
21 #include <freeradius-devel/ident.h>
24 #include <freeradius-devel/radiusd.h>
25 #include <freeradius-devel/modules.h>
26 #include <freeradius-devel/rad_assert.h>
34 #ifndef HAVE_PTHREAD_H
36 * This is a lot simpler than putting ifdef's around
37 * every use of the pthread functions.
39 #define pthread_mutex_lock(a)
40 #define pthread_mutex_trylock(a) (0)
41 #define pthread_mutex_unlock(a)
42 #define pthread_mutex_init(a,b)
43 #define pthread_mutex_destroy(a)
49 #define MAX_FILTER_STR_LEN 1024
53 * These are used in case ldap_search returns LDAP_SERVER_DOWN
54 * In that case we do conn->failed_conns++ and then check it:
55 * If conn->failed_conns <= MAX_FAILED_CONNS_START then we try
57 * conn->failed_conns is also checked on entrance in perform_search:
58 * If conn->failed_conns > MAX_FAILED_CONNS_START then we don't
59 * try to do anything and we just do conn->failed_conns++ and
60 * return RLM_MODULE_FAIL
61 * if conn->failed_conns >= MAX_FAILED_CONNS_END then we give it
62 * another chance and we set it to MAX_FAILED_CONNS_RESTART and
66 * We are assuming that the majority of the LDAP_SERVER_DOWN cases
67 * will either be an ldap connection timeout or a temporary ldap
69 * As a result we make a few attempts to reconnect hoping that the problem
70 * will soon go away. If it does not go away then we just return
71 * RLM_MODULE_FAIL on entrance in perform_search until conn->failed_conns
72 * gets to MAX_FAILED_CONNS_END. After that we give it one more chance by
73 * going back to MAX_FAILED_CONNS_RESTART
77 #define MAX_FAILED_CONNS_END 20
78 #define MAX_FAILED_CONNS_RESTART 4
79 #define MAX_FAILED_CONNS_START 5
81 #ifdef NOVELL_UNIVERSAL_PASSWORD
83 /* Universal Password Length */
84 #define UNIVERSAL_PASS_LEN 256
86 int nmasldap_get_password(
89 size_t *pwdSize, /* in bytes */
96 #define REQUEST_ACCEPTED 0
97 #define REQUEST_CHALLENGED 1
98 #define REQUEST_REJECTED 2
99 #define MAX_CHALLENGE_LEN 128
101 int radLdapXtnNMASAuth( LDAP *, char *, char *, char *, char *, size_t *, char *, int * );
105 /* linked list of mappings between RADIUS attributes and LDAP attributes */
106 struct TLDAP_RADIUS {
110 struct TLDAP_RADIUS* next;
112 typedef struct TLDAP_RADIUS TLDAP_RADIUS;
114 typedef struct ldap_conn {
119 #ifdef HAVE_PTHREAD_H
120 pthread_mutex_t mutex;
128 struct timeval net_timeout;
129 struct timeval timeout;
144 char *default_profile;
150 char *dictionary_mapping;
151 char *groupname_attr;
152 char *groupmemb_filt;
153 char *groupmemb_attr;
155 TLDAP_RADIUS *check_item_map;
156 TLDAP_RADIUS *reply_item_map;
159 LDAP_CONN *apc_conns;
161 int ldap_debug; /* Debug flag for LDAP SDK */
162 char *xlat_name; /* name used to xlat */
163 char *tls_cacertfile;
168 char *tls_require_cert;
170 int edir_account_policy_check;
175 /* The default setting for TLS Certificate Verification */
176 #define TLS_DEFAULT_VERIFY "allow"
178 static CONF_PARSER tls_config[] = {
179 {"start_tls", PW_TYPE_BOOLEAN,
180 offsetof(ldap_instance,start_tls), NULL, "no"},
181 {"cacertfile", PW_TYPE_FILENAME,
182 offsetof(ldap_instance,tls_cacertfile), NULL, NULL},
183 {"cacertdir", PW_TYPE_FILENAME,
184 offsetof(ldap_instance,tls_cacertdir), NULL, NULL},
185 {"certfile", PW_TYPE_FILENAME,
186 offsetof(ldap_instance,tls_certfile), NULL, NULL},
187 {"keyfile", PW_TYPE_FILENAME,
188 offsetof(ldap_instance,tls_keyfile), NULL, NULL},
189 {"randfile", PW_TYPE_STRING_PTR, /* OK if it changes on HUP */
190 offsetof(ldap_instance,tls_randfile), NULL, NULL},
191 {"require_cert", PW_TYPE_STRING_PTR,
192 offsetof(ldap_instance,tls_require_cert), NULL, TLS_DEFAULT_VERIFY},
193 { NULL, -1, 0, NULL, NULL }
196 static const CONF_PARSER module_config[] = {
197 {"server", PW_TYPE_STRING_PTR,
198 offsetof(ldap_instance,server), NULL, "localhost"},
199 {"port", PW_TYPE_INTEGER,
200 offsetof(ldap_instance,port), NULL, "389"},
201 {"password", PW_TYPE_STRING_PTR,
202 offsetof(ldap_instance,password), NULL, ""},
203 {"identity", PW_TYPE_STRING_PTR,
204 offsetof(ldap_instance,login), NULL, ""},
209 /* wait forever on network activity */
210 {"net_timeout", PW_TYPE_INTEGER,
211 offsetof(ldap_instance,net_timeout.tv_sec), NULL, "10"},
212 /* wait forever for search results */
213 {"timeout", PW_TYPE_INTEGER,
214 offsetof(ldap_instance,timeout.tv_sec), NULL, "20"},
215 /* allow server unlimited time for search (server-side limit) */
216 {"timelimit", PW_TYPE_INTEGER,
217 offsetof(ldap_instance,timelimit), NULL, "20"},
220 * TLS configuration The first few are here for backwards
221 * compatibility. The last is the new subsection.
223 {"tls_mode", PW_TYPE_BOOLEAN,
224 offsetof(ldap_instance,tls_mode), NULL, "no"},
226 {"start_tls", PW_TYPE_BOOLEAN,
227 offsetof(ldap_instance,start_tls), NULL, "no"},
228 {"tls_cacertfile", PW_TYPE_FILENAME,
229 offsetof(ldap_instance,tls_cacertfile), NULL, NULL},
230 {"tls_cacertdir", PW_TYPE_FILENAME,
231 offsetof(ldap_instance,tls_cacertdir), NULL, NULL},
232 {"tls_certfile", PW_TYPE_FILENAME,
233 offsetof(ldap_instance,tls_certfile), NULL, NULL},
234 {"tls_keyfile", PW_TYPE_FILENAME,
235 offsetof(ldap_instance,tls_keyfile), NULL, NULL},
236 {"tls_randfile", PW_TYPE_STRING_PTR, /* OK if it changes on HUP */
237 offsetof(ldap_instance,tls_randfile), NULL, NULL},
238 {"tls_require_cert", PW_TYPE_STRING_PTR,
239 offsetof(ldap_instance,tls_require_cert), NULL, TLS_DEFAULT_VERIFY},
240 { "tls", PW_TYPE_SUBSECTION, 0, NULL, (const void *) tls_config },
245 {"basedn", PW_TYPE_STRING_PTR,
246 offsetof(ldap_instance,basedn), NULL, "o=notexist"},
247 {"filter", PW_TYPE_STRING_PTR,
248 offsetof(ldap_instance,filter), NULL, "(uid=%u)"},
249 {"base_filter", PW_TYPE_STRING_PTR,
250 offsetof(ldap_instance,base_filter), NULL, "(objectclass=radiusprofile)"},
251 {"default_profile", PW_TYPE_STRING_PTR,
252 offsetof(ldap_instance,default_profile), NULL, NULL},
253 {"profile_attribute", PW_TYPE_STRING_PTR,
254 offsetof(ldap_instance,profile_attr), NULL, NULL},
257 * Getting passwords from the database
259 {"password_header", PW_TYPE_STRING_PTR,
260 offsetof(ldap_instance,passwd_hdr), NULL, NULL},
261 {"password_attribute", PW_TYPE_STRING_PTR,
262 offsetof(ldap_instance,passwd_attr), NULL, NULL},
263 {"auto_header", PW_TYPE_BOOLEAN,
264 offsetof(ldap_instance,auto_header), NULL, "no"},
269 /* LDAP attribute name that controls remote access */
270 {"access_attr", PW_TYPE_STRING_PTR,
271 offsetof(ldap_instance,access_attr), NULL, NULL},
272 {"access_attr_used_for_allow", PW_TYPE_BOOLEAN,
273 offsetof(ldap_instance,default_allow), NULL, "yes"},
276 * Group checks. These could probably be done
277 * via dynamic xlat's.
279 {"groupname_attribute", PW_TYPE_STRING_PTR,
280 offsetof(ldap_instance,groupname_attr), NULL, "cn"},
281 {"groupmembership_filter", PW_TYPE_STRING_PTR,
282 offsetof(ldap_instance,groupmemb_filt), NULL, "(|(&(objectClass=GroupOfNames)(member=%{Ldap-UserDn}))(&(objectClass=GroupOfUniqueNames)(uniquemember=%{Ldap-UserDn})))"},
283 {"groupmembership_attribute", PW_TYPE_STRING_PTR,
284 offsetof(ldap_instance,groupmemb_attr), NULL, NULL},
286 /* file with mapping between LDAP and RADIUS attributes */
287 {"dictionary_mapping", PW_TYPE_FILENAME,
288 offsetof(ldap_instance,dictionary_mapping), NULL, "${confdir}/ldap.attrmap"},
291 * Debugging flags to the server
293 {"ldap_debug", PW_TYPE_INTEGER,
294 offsetof(ldap_instance,ldap_debug), NULL, "0x0000"},
295 {"ldap_connections_number", PW_TYPE_INTEGER,
296 offsetof(ldap_instance,num_conns), NULL, "5"},
297 {"compare_check_items", PW_TYPE_BOOLEAN,
298 offsetof(ldap_instance,do_comp), NULL, "no"},
299 {"do_xlat", PW_TYPE_BOOLEAN,
300 offsetof(ldap_instance,do_xlat), NULL, "yes"},
306 {"edir_account_policy_check", PW_TYPE_BOOLEAN,
307 offsetof(ldap_instance,edir_account_policy_check), NULL, "yes"},
310 {"set_auth_type", PW_TYPE_BOOLEAN, offsetof(ldap_instance,set_auth_type), NULL, "yes"},
311 {NULL, -1, 0, NULL, NULL}
314 #define ld_valid ld_options.ldo_valid
315 #define LDAP_VALID_SESSION 0x2
316 #define LDAP_VALID(ld) ( (ld)->ld_valid == LDAP_VALID_SESSION )
319 static void fieldcpy(char *, char **);
321 static VALUE_PAIR *ldap_pairget(LDAP *, LDAPMessage *, TLDAP_RADIUS *,VALUE_PAIR **,int);
322 static int ldap_groupcmp(void *, REQUEST *, VALUE_PAIR *, VALUE_PAIR *, VALUE_PAIR *, VALUE_PAIR **);
323 static size_t ldap_xlat(void *, REQUEST *, char *, char *, size_t, RADIUS_ESCAPE_STRING);
324 static LDAP *ldap_connect(void *instance, const char *, const char *, int, int *, char **);
325 static int read_mappings(ldap_instance* inst);
327 static inline int ldap_get_conn(LDAP_CONN *conns,LDAP_CONN **ret,void *instance)
329 ldap_instance *inst = instance;
332 for(i=0;i<inst->num_conns;i++){
333 DEBUG("rlm_ldap: ldap_get_conn: Checking Id: %d",i);
334 if ((pthread_mutex_trylock(&conns[i].mutex) == 0)) {
335 if (conns[i].locked == 1) {
336 /* connection is already being used */
337 pthread_mutex_unlock(&(conns[i].mutex));
340 /* found an unused connection */
343 DEBUG("rlm_ldap: ldap_get_conn: Got Id: %d",i);
351 static inline void ldap_release_conn(int i, LDAP_CONN *conns)
353 DEBUG("rlm_ldap: ldap_release_conn: Release Id: %d",i);
355 pthread_mutex_unlock(&(conns[i].mutex));
358 /*************************************************************************
360 * Function: rlm_ldap_instantiate
362 * Purpose: Uses section of radiusd config file passed as parameter
363 * to create an instance of the module.
365 *************************************************************************/
367 ldap_instantiate(CONF_SECTION * conf, void **instance)
372 int reply_map_num = 0;
373 int check_map_num = 0;
374 int att_map[3] = {0,0,0};
377 const char *xlat_name;
379 inst = rad_malloc(sizeof *inst);
383 memset(inst, 0, sizeof(*inst));
385 if (cf_section_parse(conf, inst, module_config) < 0) {
390 if (inst->server == NULL) {
391 radlog(L_ERR, "rlm_ldap: missing 'server' directive.");
392 free(inst); /* FIXME: detach */
396 if (ldap_is_ldap_url(inst->server)){
397 #ifdef HAVE_LDAP_INITIALIZE
401 radlog(L_ERR, "rlm_ldap: 'server' directive is in URL form but ldap_initialize() is not available.");
402 free(inst); /* FIXME: detach */
407 inst->timeout.tv_usec = 0;
408 inst->net_timeout.tv_usec = 0;
409 /* workaround for servers which support LDAPS but not START TLS */
410 if(inst->port == LDAPS_PORT || inst->tls_mode)
411 inst->tls_mode = LDAP_OPT_X_TLS_HARD;
414 inst->reply_item_map = NULL;
415 inst->check_item_map = NULL;
417 inst->failed_conns = 0;
419 DEBUG("rlm_ldap: Registering ldap_groupcmp for Ldap-Group");
420 paircompare_register(PW_LDAP_GROUP, PW_USER_NAME, ldap_groupcmp, inst);
421 memset(&flags, 0, sizeof(flags));
423 xlat_name = cf_section_name2(conf);
424 if (xlat_name != NULL){
429 * Allocate room for <instance>-Ldap-Group
431 group_name = rad_malloc((strlen(xlat_name) + 1 + 11) * sizeof(char));
432 sprintf(group_name,"%s-Ldap-Group",xlat_name);
433 DEBUG("rlm_ldap: Creating new attribute %s",group_name);
434 dict_addattr(group_name, 0, PW_TYPE_STRING, -1, flags);
435 dattr = dict_attrbyname(group_name);
437 radlog(L_ERR, "rlm_ldap: Failed to create attribute %s",group_name);
439 free(inst); /* FIXME: detach */
442 DEBUG("rlm_ldap: Registering ldap_groupcmp for %s",group_name);
443 paircompare_register(dattr->attr, PW_USER_NAME, ldap_groupcmp, inst);
447 xlat_name = cf_section_name1(conf);
448 rad_assert(xlat_name != NULL); /* or all hell breaks loose */
450 inst->xlat_name = strdup(xlat_name);
451 DEBUG("rlm_ldap: Registering ldap_xlat with xlat_name %s",xlat_name);
452 xlat_register(xlat_name,ldap_xlat,inst);
455 * Over-ride set_auth_type if there's no Auth-Type of our name.
456 * This automagically catches the case where LDAP is listed
457 * in "authorize", but not "authenticate".
459 if (inst->set_auth_type) {
460 DICT_VALUE *dv = dict_valbyname(PW_AUTH_TYPE, xlat_name);
462 DEBUG2("rlm_ldap: Over-riding set_auth_type, as we're not listed in the \"authenticate\" section.");
463 inst->set_auth_type = 0;
465 } /* else no need to look up the value */
469 * (LDAP_Instance, V1) attribute-value pair in the config
470 * items list means that the 'authorize' method of the
471 * instance 'V1' of the LDAP module has processed this
474 dict_addattr("LDAP-Instance", 0, PW_TYPE_STRING, -1, flags);
477 * ('eDir-APC', '1') in config items list
478 * Do not perform eDirectory account policy check (APC)
480 * ('eDir-APC', '2') in config items list
481 * Perform eDirectory APC
483 * ('eDir-APC', '3') in config items list
484 * eDirectory APC has been completed
486 dict_addattr("eDir-APC", 0, PW_TYPE_STRING, -1, flags);
488 * eDir-Auth-Option allows for a different NMAS Authentication method to be used instead of password
490 dict_addattr("eDir-Auth-Option", 0, PW_TYPE_STRING, -1, flags);
493 if (inst->num_conns <= 0){
494 radlog(L_ERR, "rlm_ldap: Invalid ldap connections number passed.");
495 free(inst); /* FIXME: detach */
498 inst->conns = malloc(sizeof(*(inst->conns))*inst->num_conns);
499 if (inst->conns == NULL){
500 radlog(L_ERR, "rlm_ldap: Could not allocate memory. Aborting.");
501 free(inst); /* FIXME: detach */
504 for(i = 0; i < inst->num_conns; i++){
505 inst->conns[i].bound = 0;
506 inst->conns[i].locked = 0;
507 inst->conns[i].failed_conns = 0;
508 inst->conns[i].ld = NULL;
509 pthread_mutex_init(&inst->conns[i].mutex, NULL);
514 * 'inst->apc_conns' is a separate connection pool to be
515 * used for performing eDirectory account policy check in
516 * the 'postauth' method. This avoids changing the
517 * (RADIUS server) credentials associated with the
518 * 'inst->conns' connection pool.
520 inst->apc_conns = malloc(sizeof(*(inst->apc_conns))*inst->num_conns);
521 if (inst->apc_conns == NULL){
522 radlog(L_ERR, "rlm_ldap: Could not allocate memory. Aborting.");
523 free(inst); /* FIXME: detach */
526 for(i = 0; i < inst->num_conns; i++){
527 inst->apc_conns[i].bound = 0;
528 inst->apc_conns[i].locked = 0;
529 inst->apc_conns[i].failed_conns = 0;
530 inst->apc_conns[i].ld = NULL;
531 pthread_mutex_init(&inst->apc_conns[i].mutex, NULL);
535 if (read_mappings(inst) != 0) {
536 radlog(L_ERR, "rlm_ldap: Reading dictionary mappings from file %s failed",
537 inst->dictionary_mapping);
538 free(inst); /* FIXME: detach */
541 if ((inst->check_item_map == NULL) &&
542 (inst->reply_item_map == NULL)) {
543 radlog(L_ERR, "rlm_ldap: dictionary mappings file %s did not contain any mappings",
544 inst->dictionary_mapping);
545 free(inst); /* FIXME: detach */
549 pair = inst->check_item_map;
554 check_map_num = (atts_num - 1);
555 pair = inst->reply_item_map;
560 reply_map_num = (atts_num - 1);
561 if (inst->profile_attr)
563 if (inst->passwd_attr)
565 if (inst->access_attr)
568 atts_num++; /* eDirectory Authentication Option attribute */
570 inst->atts = (char **)malloc(sizeof(char *)*(atts_num + 1));
571 if (inst->atts == NULL){
572 radlog(L_ERR, "rlm_ldap: Could not allocate memory. Aborting.");
573 free(inst); /* FIXME: detach */
576 pair = inst->check_item_map;
578 pair = inst->reply_item_map;
580 for(i=0;i<atts_num - 1;i++){
582 for(i=0;i<atts_num;i++){
584 if (i <= check_map_num ){
585 inst->atts[i] = pair->attr;
586 if (i == check_map_num)
587 pair = inst->reply_item_map;
591 else if (i <= reply_map_num){
592 inst->atts[i] = pair->attr;
596 if (inst->profile_attr && !att_map[0]){
597 inst->atts[i] = inst->profile_attr;
600 else if (inst->passwd_attr && !att_map[1]){
601 inst->atts[i] = inst->passwd_attr;
604 else if (inst->access_attr && !att_map[2]){
605 inst->atts[i] = inst->access_attr;
611 inst->atts[atts_num - 1] = "sasdefaultloginsequence";
613 inst->atts[atts_num] = NULL;
615 DEBUG("conns: %p",inst->conns);
625 * read_mappings(...) reads a ldap<->radius mappings file to
626 * inst->reply_item_map and inst->check_item_map
628 #define MAX_LINE_LEN 160
629 #define GENERIC_ATTRIBUTE_ID "$GENERIC$"
632 read_mappings(ldap_instance* inst)
638 * All buffers are of MAX_LINE_LEN so we can use sscanf
639 * without being afraid of buffer overflows
641 char buf[MAX_LINE_LEN], itemType[MAX_LINE_LEN];
642 char radiusAttribute[MAX_LINE_LEN], ldapAttribute[MAX_LINE_LEN];
645 char opstring[MAX_LINE_LEN];
647 /* open the mappings file for reading */
649 filename = inst->dictionary_mapping;
650 DEBUG("rlm_ldap: reading ldap<->radius mappings from file %s", filename);
651 mapfile = fopen(filename, "r");
653 if (mapfile == NULL) {
654 radlog(L_ERR, "rlm_ldap: Opening file %s failed: %s",
655 filename, strerror(errno));
656 return -1; /* error */
660 * read file line by line. Note that if line length
661 * exceeds MAX_LINE_LEN, line numbers will be mixed up
665 while (fgets(buf, sizeof buf, mapfile)!=NULL) {
673 ptr = strchr(buf, '#');
677 if (buf[0] == 0) continue;
679 /* extract tokens from the string */
680 token_count = sscanf(buf, "%s %s %s %s",
681 itemType, radiusAttribute,
682 ldapAttribute, opstring);
684 if (token_count <= 0) /* no tokens */
687 if ((token_count < 3) || (token_count > 4)) {
688 radlog(L_ERR, "rlm_ldap: Skipping %s line %i: %s",
689 filename, linenumber, buf);
690 radlog(L_ERR, "rlm_ldap: Expected 3 to 4 tokens "
691 "(Item type, RADIUS Attribute and LDAP Attribute) but found only %i", token_count);
695 if (token_count == 3) {
696 operator = T_OP_INVALID; /* use defaults */
699 operator = gettoken(&ptr, buf, sizeof(buf));
700 if ((operator < T_OP_ADD) || (operator > T_OP_CMP_EQ)) {
701 radlog(L_ERR, "rlm_ldap: file %s: skipping line %i: unknown or invalid operator %s",
702 filename, linenumber, opstring);
707 /* create new TLDAP_RADIUS list node */
708 pair = rad_malloc(sizeof(*pair));
710 pair->attr = strdup(ldapAttribute);
711 pair->radius_attr = strdup(radiusAttribute);
712 pair->operator = operator;
714 if ( (pair->attr == NULL) || (pair->radius_attr == NULL) ) {
715 radlog(L_ERR, "rlm_ldap: Out of memory");
716 if (pair->attr) free(pair->attr);
717 if (pair->radius_attr) free(pair->radius_attr);
723 /* push node to correct list */
724 if (strcasecmp(itemType, "checkItem") == 0) {
725 pair->next = inst->check_item_map;
726 inst->check_item_map = pair;
727 } else if (strcasecmp(itemType, "replyItem") == 0) {
728 pair->next = inst->reply_item_map;
729 inst->reply_item_map = pair;
731 radlog(L_ERR, "rlm_ldap: file %s: skipping line %i: unknown itemType %s",
732 filename, linenumber, itemType);
734 free(pair->radius_attr);
739 DEBUG("rlm_ldap: LDAP %s mapped to RADIUS %s",
740 pair->attr, pair->radius_attr);
745 return 0; /* success */
748 static int perform_search(void *instance, LDAP_CONN *conn,
749 char *search_basedn, int scope, char *filter,
750 char **attrs, LDAPMessage ** result)
752 int res = RLM_MODULE_OK;
754 ldap_instance *inst = instance;
755 int search_retry = 0;
760 radlog(L_ERR, "rlm_ldap: NULL connection handle passed");
761 return RLM_MODULE_FAIL;
763 if (conn->failed_conns > MAX_FAILED_CONNS_START){
764 conn->failed_conns++;
765 if (conn->failed_conns >= MAX_FAILED_CONNS_END){
766 conn->failed_conns = MAX_FAILED_CONNS_RESTART;
771 if (!conn->bound || conn->ld == NULL) {
772 DEBUG2("rlm_ldap: attempting LDAP reconnection");
774 DEBUG2("rlm_ldap: closing existing LDAP connection");
775 ldap_unbind_s(conn->ld);
777 if ((conn->ld = ldap_connect(instance, inst->login,
778 inst->password, 0, &res, NULL)) == NULL) {
779 radlog(L_ERR, "rlm_ldap: (re)connection attempt failed");
780 if (search_retry == 0)
781 conn->failed_conns++;
782 return (RLM_MODULE_FAIL);
785 conn->failed_conns = 0;
787 DEBUG2("rlm_ldap: performing search in %s, with filter %s",
788 search_basedn ? search_basedn : "(null)" , filter);
789 switch (ldap_search_st(conn->ld, search_basedn, scope, filter,
790 attrs, 0, &(inst->timeout), result)) {
792 case LDAP_NO_SUCH_OBJECT:
794 case LDAP_SERVER_DOWN:
795 radlog(L_ERR, "rlm_ldap: ldap_search() failed: LDAP connection lost.");
796 conn->failed_conns++;
797 if (search_retry == 0){
798 if (conn->failed_conns <= MAX_FAILED_CONNS_START){
799 radlog(L_INFO, "rlm_ldap: Attempting reconnect");
802 ldap_msgfree(*result);
806 ldap_msgfree(*result);
807 return RLM_MODULE_FAIL;
808 case LDAP_INSUFFICIENT_ACCESS:
809 radlog(L_ERR, "rlm_ldap: ldap_search() failed: Insufficient access. Check the identity and password configuration directives.");
810 ldap_msgfree(*result);
811 return RLM_MODULE_FAIL;
813 radlog(L_ERR, "rlm_ldap: ldap_search() failed: Timed out while waiting for server to respond. Please increase the timeout.");
814 ldap_msgfree(*result);
815 return RLM_MODULE_FAIL;
816 case LDAP_FILTER_ERROR:
817 radlog(L_ERR, "rlm_ldap: ldap_search() failed: Bad search filter: %s",filter);
818 ldap_msgfree(*result);
819 return RLM_MODULE_FAIL;
820 case LDAP_TIMELIMIT_EXCEEDED:
822 case LDAP_UNAVAILABLE:
823 /* We don't need to reconnect in these cases so we don't set conn->bound */
824 ldap_get_option(conn->ld, LDAP_OPT_ERROR_NUMBER, &ldap_errno);
825 radlog(L_ERR, "rlm_ldap: ldap_search() failed: %s",
826 ldap_err2string(ldap_errno));
827 ldap_msgfree(*result);
828 return (RLM_MODULE_FAIL);
830 ldap_get_option(conn->ld, LDAP_OPT_ERROR_NUMBER, &ldap_errno);
831 radlog(L_ERR, "rlm_ldap: ldap_search() failed: %s",
832 ldap_err2string(ldap_errno));
834 ldap_msgfree(*result);
835 return (RLM_MODULE_FAIL);
838 if ((ldap_count_entries(conn->ld, *result)) != 1) {
839 DEBUG("rlm_ldap: object not found or got ambiguous search result");
840 res = RLM_MODULE_NOTFOUND;
841 ldap_msgfree(*result);
848 * Translate the LDAP queries.
850 static int ldap_escape_func(char *out, int outlen, const char *in)
856 * Encode unsafe characters.
859 ((in[0] == ' ') || (in[0] == '#'))) ||
860 (strchr(",+\"\\<>;*=()", *in))) {
861 static const char hex[] = "0123456789abcdef";
864 * Only 3 or less bytes available.
871 *(out++) = hex[((*in) >> 4) & 0x0f];
872 *(out++) = hex[(*in) & 0x0f];
880 * Only one byte left.
898 * ldap_groupcmp(). Implement the Ldap-Group == "group" filter
900 static int ldap_groupcmp(void *instance, REQUEST *req,
901 UNUSED VALUE_PAIR *request, VALUE_PAIR *check,
902 UNUSED VALUE_PAIR *check_pairs,
903 UNUSED VALUE_PAIR **reply_pairs)
905 char filter[MAX_FILTER_STR_LEN];
906 char gr_filter[MAX_FILTER_STR_LEN];
908 LDAPMessage *result = NULL;
909 LDAPMessage *msg = NULL;
910 char basedn[MAX_FILTER_STR_LEN];
911 char *attrs[] = {"dn",NULL};
913 ldap_instance *inst = instance;
914 char *group_attrs[] = {inst->groupmemb_attr,NULL};
917 VALUE_PAIR *vp_user_dn;
918 VALUE_PAIR **request_pairs;
920 request_pairs = &req->config_items;
922 DEBUG("rlm_ldap: Entering ldap_groupcmp()");
924 if (check->vp_strvalue == NULL || check->length == 0){
925 DEBUG("rlm_ldap::ldap_groupcmp: Illegal group name");
930 DEBUG("rlm_ldap::ldap_groupcmp: NULL request");
934 if (!radius_xlat(basedn, sizeof(basedn), inst->basedn, req, ldap_escape_func)) {
935 DEBUG("rlm_ldap::ldap_groupcmp: unable to create basedn.");
939 while((vp_user_dn = pairfind(*request_pairs, PW_LDAP_USERDN)) == NULL){
940 char *user_dn = NULL;
942 if (!radius_xlat(filter, sizeof(filter), inst->filter,
943 req, ldap_escape_func)){
944 DEBUG("rlm_ldap::ldap_groupcmp: unable to create filter");
947 if ((conn_id = ldap_get_conn(inst->conns,&conn,inst)) == -1){
948 radlog(L_ERR, "rlm_ldap: All ldap connections are in use");
951 if ((res = perform_search(inst, conn, basedn, LDAP_SCOPE_SUBTREE,
952 filter, attrs, &result)) != RLM_MODULE_OK){
953 DEBUG("rlm_ldap::ldap_groupcmp: search failed");
954 ldap_release_conn(conn_id,inst->conns);
957 if ((msg = ldap_first_entry(conn->ld, result)) == NULL) {
958 DEBUG("rlm_ldap::ldap_groupcmp: ldap_first_entry() failed");
959 ldap_release_conn(conn_id,inst->conns);
960 ldap_msgfree(result);
963 if ((user_dn = ldap_get_dn(conn->ld, msg)) == NULL) {
964 DEBUG("rlm_ldap:ldap_groupcmp:: ldap_get_dn() failed");
965 ldap_release_conn(conn_id,inst->conns);
966 ldap_msgfree(result);
969 ldap_release_conn(conn_id,inst->conns);
972 * Adding new attribute containing DN for LDAP
973 * object associated with given username
975 pairadd(request_pairs, pairmake("Ldap-UserDn", user_dn,
977 ldap_memfree(user_dn);
978 ldap_msgfree(result);
981 if(!radius_xlat(gr_filter, sizeof(gr_filter),
982 inst->groupmemb_filt, req, ldap_escape_func)) {
983 DEBUG("rlm_ldap::ldap_groupcmp: unable to create filter.");
987 if (strchr((char *)check->vp_strvalue,',') != NULL) {
988 /* This looks like a DN */
989 snprintf(filter,sizeof(filter), "%s",gr_filter);
990 snprintf(basedn,sizeof(basedn), "%s",(char *)check->vp_strvalue);
992 snprintf(filter,sizeof(filter), "(&(%s=%s)%s)",
993 inst->groupname_attr,
994 (char *)check->vp_strvalue,gr_filter);
996 if ((conn_id = ldap_get_conn(inst->conns,&conn,inst)) == -1) {
997 radlog(L_ERR, "rlm_ldap: All ldap connections are in use");
1001 if ((res = perform_search(inst, conn, basedn, LDAP_SCOPE_SUBTREE,
1002 filter, attrs, &result)) == RLM_MODULE_OK) {
1003 DEBUG("rlm_ldap::ldap_groupcmp: User found in group %s",
1004 (char *)check->vp_strvalue);
1005 ldap_msgfree(result);
1006 ldap_release_conn(conn_id,inst->conns);
1010 ldap_release_conn(conn_id,inst->conns);
1012 if (res != RLM_MODULE_NOTFOUND ) {
1013 DEBUG("rlm_ldap::ldap_groupcmp: Search returned error");
1017 if (inst->groupmemb_attr == NULL){
1019 * Search returned NOTFOUND and searching for
1020 * membership using user object attributes is not
1021 * specified in config file
1023 DEBUG("rlm_ldap::ldap_groupcmp: Group %s not found or user is not a member.",(char *)check->vp_strvalue);
1027 snprintf(filter,sizeof(filter), "(objectclass=*)");
1028 if ((conn_id = ldap_get_conn(inst->conns,&conn,inst)) == -1){
1029 radlog(L_ERR, "rlm_ldap: Add ldap connections are in use");
1032 if ((res = perform_search(inst, conn, vp_user_dn->vp_strvalue,
1033 LDAP_SCOPE_BASE, filter, group_attrs,
1034 &result)) != RLM_MODULE_OK) {
1035 DEBUG("rlm_ldap::ldap_groupcmp: Search returned error");
1036 ldap_release_conn(conn_id, inst->conns);
1040 if ((msg = ldap_first_entry(conn->ld, result)) == NULL) {
1041 DEBUG("rlm_ldap::ldap_groupcmp: ldap_first_entry() failed");
1042 ldap_release_conn(conn_id,inst->conns);
1043 ldap_msgfree(result);
1046 if ((vals = ldap_get_values(conn->ld, msg,
1047 inst->groupmemb_attr)) != NULL) {
1051 for (;i < ldap_count_values(vals);i++){
1052 if (strchr(vals[i],',') != NULL){
1053 /* This looks like a DN */
1054 LDAPMessage *gr_result = NULL;
1055 snprintf(filter,sizeof(filter), "(%s=%s)",
1056 inst->groupname_attr,
1057 (char *)check->vp_strvalue);
1058 if ((res = perform_search(inst, conn, vals[i],
1059 LDAP_SCOPE_BASE, filter,
1060 attrs, &gr_result)) != RLM_MODULE_OK){
1061 if (res != RLM_MODULE_NOTFOUND) {
1062 DEBUG("rlm_ldap::ldap_groupcmp: Search returned error");
1063 ldap_value_free(vals);
1064 ldap_msgfree(result);
1065 ldap_release_conn(conn_id,inst->conns);
1069 ldap_msgfree(gr_result);
1074 if (strcmp(vals[i],(char *)check->vp_strvalue) == 0){
1080 ldap_value_free(vals);
1081 ldap_msgfree(result);
1083 DEBUG("rlm_ldap::groupcmp: Group %s not found or user not a member",
1084 (char *)check->vp_strvalue);
1085 ldap_release_conn(conn_id,inst->conns);
1089 DEBUG("rlm_ldap::ldap_groupcmp: ldap_get_values() failed");
1090 ldap_msgfree(result);
1091 ldap_release_conn(conn_id,inst->conns);
1095 DEBUG("rlm_ldap::ldap_groupcmp: User found in group %s",(char *)check->vp_strvalue);
1096 ldap_release_conn(conn_id,inst->conns);
1103 * Do an xlat on an LDAP URL
1105 static size_t ldap_xlat(void *instance, REQUEST *request, char *fmt,
1106 char *out, size_t freespace, RADIUS_ESCAPE_STRING func)
1108 char url[MAX_FILTER_STR_LEN];
1111 ldap_instance *inst = instance;
1112 LDAPURLDesc *ldap_url;
1113 LDAPMessage *result = NULL;
1114 LDAPMessage *msg = NULL;
1119 DEBUG("rlm_ldap: - ldap_xlat");
1120 if (!radius_xlat(url, sizeof(url), fmt, request, func)) {
1121 radlog (L_ERR, "rlm_ldap: Unable to create LDAP URL.\n");
1124 if (!ldap_is_ldap_url(url)){
1125 radlog (L_ERR, "rlm_ldap: String passed does not look like an LDAP URL.\n");
1128 if (ldap_url_parse(url,&ldap_url)){
1129 radlog (L_ERR, "rlm_ldap: LDAP URL parse failed.\n");
1132 if (ldap_url->lud_attrs == NULL || ldap_url->lud_attrs[0] == NULL ||
1133 ( ldap_url->lud_attrs[1] != NULL ||
1134 ( ! strlen(ldap_url->lud_attrs[0]) ||
1135 ! strcmp(ldap_url->lud_attrs[0],"*") ) ) ){
1136 radlog (L_ERR, "rlm_ldap: Invalid Attribute(s) request.\n");
1137 ldap_free_urldesc(ldap_url);
1140 if (ldap_url->lud_host){
1141 if (strncmp(inst->server,ldap_url->lud_host,
1142 strlen(inst->server)) != 0 ||
1143 ldap_url->lud_port != inst->port) {
1144 DEBUG("rlm_ldap: Requested server/port is not known to this module instance.");
1145 ldap_free_urldesc(ldap_url);
1149 if ((conn_id = ldap_get_conn(inst->conns,&conn,inst)) == -1){
1150 radlog(L_ERR, "rlm_ldap: All ldap connections are in use");
1151 ldap_free_urldesc(ldap_url);
1154 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){
1155 if (res == RLM_MODULE_NOTFOUND){
1156 DEBUG("rlm_ldap: Search returned not found");
1157 ldap_free_urldesc(ldap_url);
1158 ldap_release_conn(conn_id,inst->conns);
1161 DEBUG("rlm_ldap: Search returned error");
1162 ldap_free_urldesc(ldap_url);
1163 ldap_release_conn(conn_id,inst->conns);
1166 if ((msg = ldap_first_entry(conn->ld, result)) == NULL){
1167 DEBUG("rlm_ldap: ldap_first_entry() failed");
1168 ldap_msgfree(result);
1169 ldap_free_urldesc(ldap_url);
1170 ldap_release_conn(conn_id,inst->conns);
1173 if ((vals = ldap_get_values(conn->ld, msg, ldap_url->lud_attrs[0])) != NULL) {
1174 ret = strlen(vals[0]);
1175 if (ret >= freespace){
1176 DEBUG("rlm_ldap: Insufficient string space");
1177 ldap_free_urldesc(ldap_url);
1178 ldap_value_free(vals);
1179 ldap_msgfree(result);
1180 ldap_release_conn(conn_id,inst->conns);
1183 DEBUG("rlm_ldap: Adding attribute %s, value: %s",ldap_url->lud_attrs[0],vals[0]);
1184 strlcpy(out,vals[0],freespace);
1185 ldap_value_free(vals);
1190 ldap_msgfree(result);
1191 ldap_free_urldesc(ldap_url);
1192 ldap_release_conn(conn_id,inst->conns);
1194 DEBUG("rlm_ldap: - ldap_xlat end");
1201 * For auto-header discovery.
1203 static const FR_NAME_NUMBER header_names[] = {
1204 { "{clear}", PW_CLEARTEXT_PASSWORD },
1205 { "{cleartext}", PW_CLEARTEXT_PASSWORD },
1206 { "{md5}", PW_MD5_PASSWORD },
1207 { "{smd5}", PW_SMD5_PASSWORD },
1208 { "{crypt}", PW_CRYPT_PASSWORD },
1209 { "{sha}", PW_SHA_PASSWORD },
1210 { "{ssha}", PW_SSHA_PASSWORD },
1211 { "{nt}", PW_NT_PASSWORD },
1212 { "{ns-mta-md5}", PW_NS_MTA_MD5_PASSWORD },
1217 /******************************************************************************
1219 * Function: rlm_ldap_authorize
1221 * Purpose: Check if user is authorized for remote access
1223 ******************************************************************************/
1224 static int ldap_authorize(void *instance, REQUEST * request)
1226 LDAPMessage *result = NULL;
1227 LDAPMessage *msg = NULL;
1228 LDAPMessage *def_msg = NULL;
1229 LDAPMessage *def_attr_msg = NULL;
1230 LDAPMessage *def_result = NULL;
1231 LDAPMessage *def_attr_result = NULL;
1232 ldap_instance *inst = instance;
1233 char *user_dn = NULL;
1234 char filter[MAX_FILTER_STR_LEN];
1235 char basedn[MAX_FILTER_STR_LEN];
1236 VALUE_PAIR *check_tmp;
1237 VALUE_PAIR *reply_tmp;
1239 VALUE_PAIR **check_pairs, **reply_pairs;
1241 VALUE_PAIR *module_fmsg_vp;
1242 VALUE_PAIR *user_profile;
1243 char module_fmsg[MAX_STRING_LEN];
1246 int added_known_password = 0;
1248 DEBUG("rlm_ldap: - authorize");
1250 if (!request->username){
1251 DEBUG2("rlm_ldap: Attribute \"User-Name\" is required for authorization.\n");
1252 return RLM_MODULE_NOOP;
1255 check_pairs = &request->config_items;
1256 reply_pairs = &request->reply->vps;
1259 * Check for valid input, zero length names not permitted
1261 if (request->username->vp_strvalue == 0) {
1262 radlog(L_ERR, "rlm_ldap: zero length username not permitted\n");
1263 return RLM_MODULE_INVALID;
1265 DEBUG("rlm_ldap: performing user authorization for %s",
1266 request->username->vp_strvalue);
1268 if (!radius_xlat(filter, sizeof(filter), inst->filter,
1269 request, ldap_escape_func)) {
1270 radlog (L_ERR, "rlm_ldap: unable to create filter.\n");
1271 return RLM_MODULE_INVALID;
1274 if (!radius_xlat(basedn, sizeof(basedn), inst->basedn,
1275 request, ldap_escape_func)) {
1276 radlog (L_ERR, "rlm_ldap: unable to create basedn.\n");
1277 return RLM_MODULE_INVALID;
1280 if ((conn_id = ldap_get_conn(inst->conns,&conn,inst)) == -1){
1281 radlog(L_ERR, "rlm_ldap: All ldap connections are in use");
1282 return RLM_MODULE_FAIL;
1284 if ((res = perform_search(instance, conn, basedn, LDAP_SCOPE_SUBTREE, filter, inst->atts, &result)) != RLM_MODULE_OK) {
1285 DEBUG("rlm_ldap: search failed");
1286 if (res == RLM_MODULE_NOTFOUND){
1287 snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: User not found");
1288 module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
1289 pairadd(&request->packet->vps, module_fmsg_vp);
1291 ldap_release_conn(conn_id,inst->conns);
1294 if ((msg = ldap_first_entry(conn->ld, result)) == NULL) {
1295 DEBUG("rlm_ldap: ldap_first_entry() failed");
1296 ldap_msgfree(result);
1297 ldap_release_conn(conn_id,inst->conns);
1298 return RLM_MODULE_FAIL;
1300 if ((user_dn = ldap_get_dn(conn->ld, msg)) == NULL) {
1301 DEBUG("rlm_ldap: ldap_get_dn() failed");
1302 ldap_msgfree(result);
1303 ldap_release_conn(conn_id,inst->conns);
1304 return RLM_MODULE_FAIL;
1307 * Adding new attribute containing DN for LDAP object associated with
1310 pairadd(check_pairs, pairmake("Ldap-UserDn", user_dn, T_OP_EQ));
1311 ldap_memfree(user_dn);
1314 /* Remote access is controled by attribute of the user object */
1315 if (inst->access_attr) {
1316 if ((vals = ldap_get_values(conn->ld, msg, inst->access_attr)) != NULL) {
1317 if (inst->default_allow){
1318 DEBUG("rlm_ldap: checking if remote access for %s is allowed by %s", request->username->vp_strvalue, inst->access_attr);
1319 if (!strncmp(vals[0], "FALSE", 5)) {
1320 DEBUG("rlm_ldap: dialup access disabled");
1321 snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: Access Attribute denies access");
1322 module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
1323 pairadd(&request->packet->vps, module_fmsg_vp);
1324 ldap_msgfree(result);
1325 ldap_value_free(vals);
1326 ldap_release_conn(conn_id,inst->conns);
1327 return RLM_MODULE_USERLOCK;
1329 ldap_value_free(vals);
1332 DEBUG("rlm_ldap: %s attribute exists - access denied by default", inst->access_attr);
1333 snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: Access Attribute denies access");
1334 module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
1335 pairadd(&request->packet->vps, module_fmsg_vp);
1336 ldap_msgfree(result);
1337 ldap_value_free(vals);
1338 ldap_release_conn(conn_id,inst->conns);
1339 return RLM_MODULE_USERLOCK;
1342 if (inst->default_allow){
1343 DEBUG("rlm_ldap: no %s attribute - access denied by default", inst->access_attr);
1344 snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: Access Attribute denies access");
1345 module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
1346 pairadd(&request->packet->vps, module_fmsg_vp);
1347 ldap_msgfree(result);
1348 ldap_release_conn(conn_id,inst->conns);
1349 return RLM_MODULE_USERLOCK;
1355 * Check for the default profile entry. If it exists then add the
1356 * attributes it contains in the check and reply pairs
1359 user_profile = pairfind(request->config_items, PW_USER_PROFILE);
1360 if (inst->default_profile || user_profile){
1361 char *profile = inst->default_profile;
1363 strlcpy(filter,inst->base_filter,sizeof(filter));
1365 profile = user_profile->vp_strvalue;
1366 if (profile && strlen(profile)){
1367 if ((res = perform_search(instance, conn,
1368 profile, LDAP_SCOPE_BASE,
1369 filter, inst->atts, &def_result)) == RLM_MODULE_OK){
1370 if ((def_msg = ldap_first_entry(conn->ld,def_result))){
1371 if ((check_tmp = ldap_pairget(conn->ld,def_msg,inst->check_item_map,check_pairs,1))) {
1373 pairxlatmove(request, check_pairs, &check_tmp);
1374 pairfree(&check_tmp);
1377 pairadd(check_pairs,check_tmp);
1379 if ((reply_tmp = ldap_pairget(conn->ld,def_msg,inst->reply_item_map,reply_pairs,0))) {
1381 pairxlatmove(request, reply_pairs, &reply_tmp);
1382 pairfree(&reply_tmp);
1385 pairadd(reply_pairs,reply_tmp);
1388 ldap_msgfree(def_result);
1390 DEBUG("rlm_ldap: default_profile/user-profile search failed");
1395 * Check for the profile attribute. If it exists, we assume that it
1396 * contains the DN of an entry containg a profile for the user. That
1397 * way we can have different general profiles for various user groups
1398 * (students,faculty,staff etc)
1401 if (inst->profile_attr){
1402 if ((vals = ldap_get_values(conn->ld, msg, inst->profile_attr)) != NULL) {
1404 strlcpy(filter,inst->base_filter,sizeof(filter));
1405 while(vals[i] != NULL && strlen(vals[i])){
1406 if ((res = perform_search(instance, conn,
1407 vals[i], LDAP_SCOPE_BASE,
1408 filter, inst->atts, &def_attr_result)) == RLM_MODULE_OK){
1409 if ((def_attr_msg = ldap_first_entry(conn->ld,def_attr_result))){
1410 if ((check_tmp = ldap_pairget(conn->ld,def_attr_msg,inst->check_item_map,check_pairs,1))) {
1412 pairxlatmove(request, check_pairs, &check_tmp);
1413 pairfree(&check_tmp);
1416 pairadd(check_pairs,check_tmp);
1418 if ((reply_tmp = ldap_pairget(conn->ld,def_attr_msg,inst->reply_item_map,reply_pairs,0))) {
1420 pairxlatmove(request, reply_pairs, &reply_tmp);
1421 pairfree(&reply_tmp);
1424 pairadd(reply_pairs,reply_tmp);
1427 ldap_msgfree(def_attr_result);
1429 DEBUG("rlm_ldap: profile_attribute search failed");
1432 ldap_value_free(vals);
1435 if (inst->passwd_attr && strlen(inst->passwd_attr)) {
1436 #ifdef NOVELL_UNIVERSAL_PASSWORD
1437 if (strcasecmp(inst->passwd_attr,"nspmPassword") != 0) {
1439 VALUE_PAIR *passwd_item;
1445 * Read the password from the DB, and
1446 * add it to the request.
1448 passwd_vals = ldap_get_values(conn->ld,msg,
1452 * Loop over what we received, and parse it.
1454 if (passwd_vals) for (i = 0;
1455 passwd_vals[i] != NULL;
1457 int attr = PW_USER_PASSWORD;
1459 if (strlen(passwd_vals[i]) == 0)
1462 value = passwd_vals[i];
1464 if (inst->auto_header) {
1468 p = strchr(value, '}');
1470 if ((size_t)(p - value + 1) >= sizeof(autobuf))
1471 continue; /* paranoia */
1472 memcpy(autobuf, value, p - value + 1);
1473 autobuf[p - value + 1] = '\0';
1475 attr = fr_str2int(header_names,
1477 if (!attr) continue;
1481 } else if (inst->passwd_hdr &&
1482 strlen(inst->passwd_hdr)) {
1483 if (strncasecmp(value,
1485 strlen(inst->passwd_hdr)) == 0) {
1486 value += strlen(inst->passwd_hdr);
1488 DEBUG("rlm_ldap: Password header not found in password %s for user %s", passwd_vals[0], request->username->vp_strvalue);
1491 if (!value) continue;
1494 passwd_item = radius_paircreate(request,
1495 &request->config_items,
1498 strlcpy(passwd_item->vp_strvalue, value,
1499 sizeof(passwd_item->vp_strvalue));
1500 passwd_item->length = strlen(passwd_item->vp_strvalue);
1501 DEBUG("rlm_ldap: Added %s = %s in check items",
1503 passwd_item->vp_strvalue);
1504 added_known_password = 1;
1506 ldap_value_free(passwd_vals);
1507 #ifdef NOVELL_UNIVERSAL_PASSWORD
1511 * Read Universal Password from eDirectory
1513 VALUE_PAIR *passwd_item;
1514 VALUE_PAIR *vp_user_dn;
1516 char *universal_password = NULL;
1517 int universal_password_len = UNIVERSAL_PASS_LEN;
1518 char *passwd_val = NULL;
1522 if ((passwd_item = pairfind(request->config_items, PW_CLEARTEXT_PASSWORD)) == NULL){
1524 universal_password = rad_malloc(universal_password_len);
1525 memset(universal_password, 0, universal_password_len);
1527 vp_user_dn = pairfind(request->config_items,PW_LDAP_USERDN);
1528 res = nmasldap_get_password(conn->ld,vp_user_dn->vp_strvalue,&universal_password_len,universal_password);
1531 passwd_val = universal_password;
1533 if (inst->passwd_hdr && strlen(inst->passwd_hdr)){
1534 passwd_val = strstr(passwd_val,inst->passwd_hdr);
1536 if (passwd_val != NULL)
1537 passwd_val += strlen((char*)inst->passwd_hdr);
1539 DEBUG("rlm_ldap: Password header not found in password %s for user %s ",passwd_val,request->username->vp_strvalue);
1543 passwd_item = radius_paircreate(request, &request->config_items, PW_CLEARTEXT_PASSWORD, PW_TYPE_STRING);
1544 strlcpy(passwd_item->vp_strvalue,passwd_val,sizeof(passwd_item->vp_strvalue));
1545 passwd_item->length = strlen(passwd_item->vp_strvalue);
1546 added_known_password = 1;
1551 VALUE_PAIR *vp_inst, *vp_apc;
1552 int inst_attr, apc_attr;
1554 dattr = dict_attrbyname("LDAP-Instance");
1555 inst_attr = dattr->attr;
1556 dattr = dict_attrbyname("eDir-APC");
1557 apc_attr = dattr->attr;
1559 vp_inst = pairfind(request->config_items, inst_attr);
1560 if(vp_inst == NULL){
1562 * The authorize method of no other LDAP module instance has
1563 * processed this request.
1565 vp_inst = radius_paircreate(request, &request->config_items, inst_attr, PW_TYPE_STRING);
1566 strlcpy(vp_inst->vp_strvalue, inst->xlat_name, sizeof(vp_inst->vp_strvalue));
1567 vp_inst->length = strlen(vp_inst->vp_strvalue);
1570 * Inform the authenticate / post-auth method about the presence
1571 * of UP in the config items list and whether eDirectory account
1572 * policy check is to be performed or not.
1574 vp_apc = radius_paircreate(request, &request->config_items, apc_attr, PW_TYPE_STRING);
1575 if(!inst->edir_account_policy_check){
1577 strcpy(vp_apc->vp_strvalue, "1");
1579 /* Perform eDirectory account-policy check */
1580 strcpy(vp_apc->vp_strvalue, "2");
1587 DEBUG("rlm_ldap: Added the eDirectory password %s in check items as %s",passwd_item->vp_strvalue,passwd_item->name);
1591 DEBUG("rlm_ldap: Error reading Universal Password.Return Code = %d",res);
1594 memset(universal_password, 0, universal_password_len);
1595 free(universal_password);
1603 VALUE_PAIR *vp_auth_opt;
1608 dattr = dict_attrbyname("eDir-Auth-Option");
1609 auth_opt_attr = dattr->attr;
1610 if(pairfind(*check_pairs, auth_opt_attr) == NULL){
1611 if ((auth_option = ldap_get_values(conn->ld, msg, "sasDefaultLoginSequence")) != NULL) {
1612 if ((vp_auth_opt = paircreate(auth_opt_attr, PW_TYPE_STRING)) == NULL){
1613 radlog(L_ERR, "rlm_ldap: Could not allocate memory. Aborting.");
1614 ldap_msgfree(result);
1615 ldap_release_conn(conn_id, inst->conns);
1617 strcpy(vp_auth_opt->vp_strvalue, auth_option[0]);
1618 vp_auth_opt->length = strlen(auth_option[0]);
1619 pairadd(&request->config_items, vp_auth_opt);
1621 DEBUG("rlm_ldap: No default NMAS login sequence");
1627 DEBUG("rlm_ldap: looking for check items in directory...");
1629 if ((check_tmp = ldap_pairget(conn->ld, msg, inst->check_item_map,check_pairs,1)) != NULL) {
1631 pairxlatmove(request, check_pairs, &check_tmp);
1632 pairfree(&check_tmp);
1635 pairadd(check_pairs,check_tmp);
1639 DEBUG("rlm_ldap: looking for reply items in directory...");
1642 if ((reply_tmp = ldap_pairget(conn->ld, msg, inst->reply_item_map,reply_pairs,0)) != NULL) {
1644 pairxlatmove(request, reply_pairs, &reply_tmp);
1645 pairfree(&reply_tmp);
1648 pairadd(reply_pairs,reply_tmp);
1651 if (inst->do_comp && paircompare(request,request->packet->vps,*check_pairs,reply_pairs) != 0){
1653 /* Don't perform eDirectory APC if RADIUS authorize fails */
1658 dattr = dict_attrbyname("eDir-APC");
1659 apc_attr = dattr->attr;
1661 vp_apc = pairfind(request->config_items, apc_attr);
1663 vp_apc->vp_strvalue[0] = '1';
1666 DEBUG("rlm_ldap: Pairs do not match. Rejecting user.");
1667 snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: Pairs do not match");
1668 module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
1669 pairadd(&request->packet->vps, module_fmsg_vp);
1670 ldap_msgfree(result);
1671 ldap_release_conn(conn_id,inst->conns);
1673 return RLM_MODULE_REJECT;
1677 * More warning messages for people who can't be bothered
1678 * to read the documentation.
1680 if (debug_flag > 1) {
1681 if (!pairfind(request->config_items, PW_CLEARTEXT_PASSWORD) &&
1682 !pairfind(request->config_items, PW_USER_PASSWORD)) {
1683 DEBUG("WARNING: No \"known good\" password was found in LDAP. Are you sure that the user is configured correctly?");
1688 * Module should default to LDAP authentication if no Auth-Type
1689 * specified. Note that we do this ONLY if configured, AND we
1690 * set the Auth-Type to our module name, which allows multiple
1691 * ldap instances to work.
1693 if (inst->set_auth_type &&
1694 (pairfind(*check_pairs, PW_AUTH_TYPE) == NULL) &&
1695 request->password &&
1696 (request->password->attribute == PW_USER_PASSWORD) &&
1697 !added_known_password) {
1698 pairadd(check_pairs, pairmake("Auth-Type", inst->xlat_name, T_OP_EQ));
1699 DEBUG("rlm_ldap: Setting Auth-Type = %s", inst->xlat_name);
1702 DEBUG("rlm_ldap: user %s authorized to use remote access",
1703 request->username->vp_strvalue);
1704 ldap_msgfree(result);
1705 ldap_release_conn(conn_id,inst->conns);
1707 return RLM_MODULE_OK;
1710 /*****************************************************************************
1712 * Function: rlm_ldap_authenticate
1714 * Purpose: Check the user's password against ldap database
1716 *****************************************************************************/
1717 static int ldap_authenticate(void *instance, REQUEST * request)
1720 LDAPMessage *result, *msg;
1721 ldap_instance *inst = instance;
1722 char *user_dn, *attrs[] = {"uid", NULL};
1723 char filter[MAX_FILTER_STR_LEN];
1724 char basedn[MAX_FILTER_STR_LEN];
1726 VALUE_PAIR *vp_user_dn;
1727 VALUE_PAIR *module_fmsg_vp;
1728 char module_fmsg[MAX_STRING_LEN];
1735 DEBUG("rlm_ldap: - authenticate");
1738 * Ensure that we're being passed a plain-text password, and not
1742 if (!request->username) {
1743 radlog(L_AUTH, "rlm_ldap: Attribute \"User-Name\" is required for authentication.\n");
1744 return RLM_MODULE_INVALID;
1747 if (!request->password){
1748 radlog(L_AUTH, "rlm_ldap: Attribute \"User-Password\" is required for authentication.");
1749 DEBUG2(" You seem to have set \"Auth-Type := LDAP\" somewhere.");
1750 DEBUG2(" THAT CONFIGURATION IS WRONG. DELETE IT.");
1751 DEBUG2(" YOU ARE PREVENTING THE SERVER FROM WORKING PROPERLY.");
1752 return RLM_MODULE_INVALID;
1755 if(request->password->attribute != PW_USER_PASSWORD) {
1756 radlog(L_AUTH, "rlm_ldap: Attribute \"User-Password\" is required for authentication. Cannot use \"%s\".", request->password->name);
1757 return RLM_MODULE_INVALID;
1760 if (request->password->length == 0) {
1761 snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: empty password supplied");
1762 module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
1763 pairadd(&request->packet->vps, module_fmsg_vp);
1764 return RLM_MODULE_INVALID;
1768 * Check that we don't have any failed connections. If we do there's no real need
1769 * of runing. Also give it another chance if we have a lot of failed connections.
1771 if (inst->failed_conns > MAX_FAILED_CONNS_END)
1772 inst->failed_conns = 0;
1773 if (inst->failed_conns > MAX_FAILED_CONNS_START){
1774 inst->failed_conns++;
1775 return RLM_MODULE_FAIL;
1779 DEBUG("rlm_ldap: login attempt by \"%s\" with password \"%s\"",
1780 request->username->vp_strvalue, request->password->vp_strvalue);
1782 while ((vp_user_dn = pairfind(request->config_items,
1783 PW_LDAP_USERDN)) == NULL) {
1784 if (!radius_xlat(filter, sizeof(filter), inst->filter,
1785 request, ldap_escape_func)) {
1786 radlog (L_ERR, "rlm_ldap: unable to create filter.\n");
1787 return RLM_MODULE_INVALID;
1790 if (!radius_xlat(basedn, sizeof(basedn), inst->basedn,
1791 request, ldap_escape_func)) {
1792 radlog (L_ERR, "rlm_ldap: unable to create basedn.\n");
1793 return RLM_MODULE_INVALID;
1796 if ((conn_id = ldap_get_conn(inst->conns,&conn,inst)) == -1){
1797 radlog(L_ERR, "rlm_ldap: All ldap connections are in use");
1798 return RLM_MODULE_FAIL;
1800 if ((res = perform_search(instance, conn, basedn, LDAP_SCOPE_SUBTREE, filter, attrs, &result)) != RLM_MODULE_OK) {
1801 if (res == RLM_MODULE_NOTFOUND){
1802 snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: User not found");
1803 module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
1804 pairadd(&request->packet->vps, module_fmsg_vp);
1806 ldap_release_conn(conn_id,inst->conns);
1809 if ((msg = ldap_first_entry(conn->ld, result)) == NULL) {
1810 ldap_msgfree(result);
1811 ldap_release_conn(conn_id,inst->conns);
1812 return RLM_MODULE_FAIL;
1814 if ((user_dn = ldap_get_dn(conn->ld, msg)) == NULL) {
1815 DEBUG("rlm_ldap: ldap_get_dn() failed");
1816 ldap_msgfree(result);
1817 ldap_release_conn(conn_id,inst->conns);
1818 return RLM_MODULE_FAIL;
1820 ldap_release_conn(conn_id,inst->conns);
1821 pairadd(&request->config_items, pairmake("Ldap-UserDn", user_dn, T_OP_EQ));
1822 ldap_memfree(user_dn);
1823 ldap_msgfree(result);
1826 user_dn = vp_user_dn->vp_strvalue;
1828 DEBUG("rlm_ldap: user DN: %s", user_dn);
1831 ld_user = ldap_connect(instance, user_dn, request->password->vp_strvalue,
1834 /* Don't perform eDirectory APC again after attempting to bind here. */
1839 VALUE_PAIR *vp_auth_opt, *vp_state;
1842 char host_ipaddr[32];
1844 int auth_state = -1;
1845 char *challenge = NULL;
1846 int challenge_len = MAX_CHALLENGE_LEN;
1849 dattr = dict_attrbyname("eDir-APC");
1850 apc_attr = dattr->attr;
1851 vp_apc = pairfind(request->config_items, apc_attr);
1852 if(vp_apc && vp_apc->vp_strvalue[0] == '2')
1853 vp_apc->vp_strvalue[0] = '3';
1857 dattr = dict_attrbyname("eDir-Auth-Option");
1858 auth_opt_attr = dattr->attr;
1860 vp_auth_opt = pairfind(request->config_items, auth_opt_attr);
1864 DEBUG("rlm_ldap: ldap auth option = %s", vp_auth_opt->vp_strvalue);
1865 strncpy(seq, vp_auth_opt->vp_strvalue, vp_auth_opt->length);
1866 seq[vp_auth_opt->length] = '\0';
1867 if( strcmp(seq, "<No Default>") ){
1869 /* Get the client IP address to check for packet validity */
1870 inet_ntop(AF_INET, &request->packet->src_ipaddr, host_ipaddr, sizeof(host_ipaddr));
1872 /* challenge variable is used to receive the challenge from the
1873 * Token method (if any) and also to send the state attribute
1874 * in case the request packet is a reply to a challenge
1876 challenge = rad_malloc(MAX_CHALLENGE_LEN);
1878 /* If state attribute present in request it is a reply to challenge. */
1879 if((vp_state = pairfind(request->packet->vps, PW_STATE))!= NULL ){
1880 DEBUG("rlm_ldap: Response to Access-Challenge");
1881 strncpy(challenge, vp_state->vp_strvalue, sizeof(challenge));
1882 challenge_len = vp_state->length;
1883 challenge[challenge_len] = 0;
1887 if ((conn_id = ldap_get_conn(inst->conns, &conn1, inst)) == -1){
1888 radlog(L_ERR, "rlm_ldap: All ldap connections are in use");
1889 res = RLM_MODULE_FAIL;
1893 radlog(L_ERR, "rlm_ldap: NULL connection handle passed");
1894 return RLM_MODULE_FAIL;
1897 if (conn1->failed_conns > MAX_FAILED_CONNS_START){
1898 conn1->failed_conns++;
1899 if (conn1->failed_conns >= MAX_FAILED_CONNS_END){
1900 conn1->failed_conns = MAX_FAILED_CONNS_RESTART;
1905 if (!conn1->bound || conn1->ld == NULL) {
1906 DEBUG2("rlm_ldap: attempting LDAP reconnection");
1908 DEBUG2("rlm_ldap: closing existing LDAP connection");
1909 ldap_unbind_s(conn1->ld);
1911 if ((conn1->ld = ldap_connect(instance, inst->login,inst->password, 0, &res, NULL)) == NULL) {
1912 radlog(L_ERR, "rlm_ldap: (re)connection attempt failed");
1913 conn1->failed_conns++;
1914 return (RLM_MODULE_FAIL);
1917 conn1->failed_conns = 0;
1919 DEBUG("rlm_ldap: Performing NMAS Authentication for user: %s, seq: %s \n", user_dn,seq);
1921 res = radLdapXtnNMASAuth(conn1->ld, user_dn, request->password->vp_strvalue, seq, host_ipaddr, &challenge_len, challenge, &auth_state );
1925 ldap_release_conn(conn_id,inst->conns);
1926 if ( auth_state == -1)
1927 res = RLM_MODULE_FAIL;
1928 if ( auth_state != REQUEST_CHALLENGED){
1929 if (auth_state == REQUEST_ACCEPTED){
1930 DEBUG("rlm_ldap: user %s authenticated succesfully",request->username->vp_strvalue);
1931 res = RLM_MODULE_OK;
1932 }else if(auth_state == REQUEST_REJECTED){
1933 DEBUG("rlm_ldap: user %s authentication failed",request->username->vp_strvalue);
1934 res = RLM_MODULE_REJECT;
1937 /* Request challenged. Generate Reply-Message attribute with challenge data */
1938 pairadd(&request->reply->vps,pairmake("Reply-Message", challenge, T_OP_EQ));
1939 /* Generate state attribute */
1940 state = rad_malloc(MAX_CHALLENGE_LEN);
1941 (void) sprintf(state, "%s%s", challenge, challenge);
1942 vp_state = paircreate(PW_STATE, PW_TYPE_OCTETS);
1943 memcpy(vp_state->vp_strvalue, state, strlen(state));
1944 vp_state->length = strlen(state);
1945 pairadd(&request->reply->vps, vp_state);
1947 /* Mark the packet as a Acceess-Challenge Packet */
1948 request->reply->code = PW_ACCESS_CHALLENGE;
1949 DEBUG("rlm_ldap: Sending Access-Challenge.");
1950 res = RLM_MODULE_HANDLED;
1955 case LDAP_SERVER_DOWN:
1956 radlog(L_ERR, "rlm_ldap: nmas authentication failed: LDAP connection lost."); conn->failed_conns++;
1957 if (conn->failed_conns <= MAX_FAILED_CONNS_START){
1958 radlog(L_INFO, "rlm_ldap: Attempting reconnect");
1964 return RLM_MODULE_FAIL;
1966 ldap_release_conn(conn_id,inst->conns);
1969 return RLM_MODULE_FAIL;
1975 ld_user = ldap_connect(instance, user_dn, request->password->vp_strvalue,
1979 /* 'err' contains the LDAP connection error description */
1980 DEBUG("rlm_ldap: %s", err);
1981 pairadd(&request->reply->vps, pairmake("Reply-Message", err, T_OP_EQ));
1982 ldap_memfree((void *)err);
1986 if (ld_user == NULL){
1987 if (res == RLM_MODULE_REJECT){
1988 inst->failed_conns = 0;
1989 snprintf(module_fmsg,sizeof(module_fmsg),"rlm_ldap: Bind as user failed");
1990 module_fmsg_vp = pairmake("Module-Failure-Message", module_fmsg, T_OP_EQ);
1991 pairadd(&request->packet->vps, module_fmsg_vp);
1993 if (res == RLM_MODULE_FAIL){
1994 DEBUG("rlm_ldap: ldap_connect() failed");
1995 inst->failed_conns++;
2000 DEBUG("rlm_ldap: user %s authenticated succesfully",
2001 request->username->vp_strvalue);
2002 ldap_unbind_s(ld_user);
2003 inst->failed_conns = 0;
2005 return RLM_MODULE_OK;
2009 /*****************************************************************************
2011 * Function: rlm_ldap_postauth
2013 * Purpose: Perform eDirectory account policy check and failed-login reporting
2016 *****************************************************************************/
2017 static int ldap_postauth(void *instance, REQUEST * request)
2019 int res = RLM_MODULE_FAIL;
2020 int inst_attr, apc_attr;
2021 char password[UNIVERSAL_PASS_LEN];
2022 ldap_instance *inst = instance;
2024 VALUE_PAIR *vp_inst, *vp_apc;
2027 dattr = dict_attrbyname("LDAP-Instance");
2028 inst_attr = dattr->attr;
2029 dattr = dict_attrbyname("eDir-APC");
2030 apc_attr = dattr->attr;
2032 vp_inst = pairfind(request->config_items, inst_attr);
2035 * Check if the password in the config items list is the user's UP which has
2036 * been read in the authorize method of this instance of the LDAP module.
2038 if((vp_inst == NULL) || strcmp(vp_inst->vp_strvalue, inst->xlat_name))
2039 return RLM_MODULE_NOOP;
2041 vp_apc = pairfind(request->config_items, apc_attr);
2043 switch(vp_apc->vp_strvalue[0]){
2045 /* Account policy check not enabled */
2047 /* Account policy check has been completed */
2048 res = RLM_MODULE_NOOP;
2052 int err, conn_id = -1;
2053 char *error_msg = NULL;
2054 VALUE_PAIR *vp_fdn, *vp_pwd;
2057 if (request->reply->code == PW_AUTHENTICATION_REJECT) {
2058 /* Bind to eDirectory as the RADIUS user with a wrong password. */
2059 vp_pwd = pairfind(request->config_items, PW_CLEARTEXT_PASSWORD);
2060 strcpy(password, vp_pwd->vp_strvalue);
2061 if (strlen(password) > 0) {
2062 if (password[0] != 'a') {
2068 strcpy(password, "dummy_password");
2070 res = RLM_MODULE_REJECT;
2072 /* Bind to eDirectory as the RADIUS user using the user's UP */
2073 vp_pwd = pairfind(request->config_items, PW_CLEARTEXT_PASSWORD);
2074 if (vp_pwd == NULL) {
2075 DEBUG("rlm_ldap: User's Universal Password not in config items list.");
2076 return RLM_MODULE_FAIL;
2078 strcpy(password, vp_pwd->vp_strvalue);
2081 if ((da = dict_attrbyname("Ldap-UserDn")) == NULL) {
2082 DEBUG("rlm_ldap: Attribute for user FDN not found in dictionary. Unable to proceed");
2083 return RLM_MODULE_FAIL;
2086 vp_fdn = pairfind(request->packet->vps, da->attr);
2087 if (vp_fdn == NULL) {
2088 DEBUG("rlm_ldap: User's FQDN not in config items list.");
2089 return RLM_MODULE_FAIL;
2092 if ((conn_id = ldap_get_conn(inst->apc_conns, &conn, inst)) == -1){
2093 radlog(L_ERR, "rlm_ldap: All ldap connections are in use");
2094 return RLM_MODULE_FAIL;
2098 * If there is an existing LDAP
2099 * connection to the directory,
2100 * bind over it. Otherwise,
2101 * establish a new connection.
2104 if (!conn->bound || conn->ld == NULL) {
2105 DEBUG2("rlm_ldap: attempting LDAP reconnection");
2107 DEBUG2("rlm_ldap: closing existing LDAP connection");
2108 ldap_unbind_s(conn->ld);
2110 if ((conn->ld = ldap_connect(instance, (char *)vp_fdn->vp_strvalue, password, 0, &res, &error_msg)) == NULL) {
2111 radlog(L_ERR, "rlm_ldap: eDirectory account policy check failed.");
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);
2119 vp_apc->vp_strvalue[0] = '3';
2120 ldap_release_conn(conn_id, inst->apc_conns);
2121 return RLM_MODULE_REJECT;
2124 } else if((err = ldap_simple_bind_s(conn->ld, (char *)vp_fdn->vp_strvalue, password)) != LDAP_SUCCESS) {
2125 if (err == LDAP_SERVER_DOWN) {
2127 goto postauth_reconnect;
2129 DEBUG("rlm_ldap: eDirectory account policy check failed.");
2130 ldap_get_option(conn->ld, LDAP_OPT_ERROR_STRING, &error_msg);
2131 if (error_msg != NULL) {
2132 DEBUG("rlm_ldap: %s", error_msg);
2133 pairadd(&request->reply->vps, pairmake("Reply-Message", error_msg, T_OP_EQ));
2134 ldap_memfree((void *)error_msg);
2136 vp_apc->vp_strvalue[0] = '3';
2137 ldap_release_conn(conn_id, inst->apc_conns);
2138 return RLM_MODULE_REJECT;
2140 vp_apc->vp_strvalue[0] = '3';
2141 ldap_release_conn(conn_id, inst->apc_conns);
2142 return RLM_MODULE_OK;
2149 static LDAP *ldap_connect(void *instance, const char *dn, const char *password,
2150 int auth, int *result, char **err)
2152 ldap_instance *inst = instance;
2154 int msgid, rc, ldap_version;
2159 #ifdef HAVE_LDAP_INITIALIZE
2160 DEBUG("rlm_ldap: (re)connect to %s, authentication %d", inst->server, auth);
2161 if (ldap_initialize(&ld, inst->server) != LDAP_SUCCESS) {
2162 radlog(L_ERR, "rlm_ldap: ldap_initialize() failed");
2163 *result = RLM_MODULE_FAIL;
2168 DEBUG("rlm_ldap: (re)connect to %s:%d, authentication %d", inst->server, inst->port, auth);
2169 if ((ld = ldap_init(inst->server, inst->port)) == NULL) {
2170 radlog(L_ERR, "rlm_ldap: ldap_init() failed");
2171 *result = RLM_MODULE_FAIL;
2175 if (ldap_set_option(ld, LDAP_OPT_NETWORK_TIMEOUT,
2176 (void *) &(inst->net_timeout)) != LDAP_OPT_SUCCESS) {
2177 radlog(L_ERR, "rlm_ldap: Could not set LDAP_OPT_NETWORK_TIMEOUT %ld.%ld", inst->net_timeout.tv_sec, inst->net_timeout.tv_usec);
2180 if (ldap_set_option(ld, LDAP_OPT_TIMELIMIT,
2181 (void *) &(inst->timelimit)) != LDAP_OPT_SUCCESS) {
2182 radlog(L_ERR, "rlm_ldap: Could not set LDAP_OPT_TIMELIMIT %d", inst->timelimit);
2185 if (inst->ldap_debug && ldap_set_option(NULL, LDAP_OPT_DEBUG_LEVEL, &(inst->ldap_debug)) != LDAP_OPT_SUCCESS) {
2186 radlog(L_ERR, "rlm_ldap: Could not set LDAP_OPT_DEBUG_LEVEL %d", inst->ldap_debug);
2189 ldap_version = LDAP_VERSION3;
2190 if (ldap_set_option(ld, LDAP_OPT_PROTOCOL_VERSION,
2191 &ldap_version) != LDAP_OPT_SUCCESS) {
2192 radlog(L_ERR, "rlm_ldap: Could not set LDAP version to V3");
2195 #ifdef HAVE_LDAP_START_TLS
2196 if (inst->tls_mode) {
2197 DEBUG("rlm_ldap: setting TLS mode to %d", inst->tls_mode);
2198 if (ldap_set_option(ld, LDAP_OPT_X_TLS,
2199 (void *) &(inst->tls_mode)) != LDAP_OPT_SUCCESS) {
2200 ldap_get_option(ld, LDAP_OPT_ERROR_NUMBER, &ldap_errno);
2201 radlog(L_ERR, "rlm_ldap: could not set LDAP_OPT_X_TLS option %s", ldap_err2string(ldap_errno));
2205 if (inst->tls_cacertfile != NULL) {
2206 DEBUG("rlm_ldap: setting TLS CACert File to %s", inst->tls_cacertfile);
2208 if ( ldap_set_option( NULL, LDAP_OPT_X_TLS_CACERTFILE,
2209 (void *) inst->tls_cacertfile )
2210 != LDAP_OPT_SUCCESS) {
2211 radlog(L_ERR, "rlm_ldap: could not set "
2212 "LDAP_OPT_X_TLS_CACERTFILE option to %s", inst->tls_cacertfile);
2216 if (inst->tls_cacertdir != NULL) {
2217 DEBUG("rlm_ldap: setting TLS CACert Directory to %s", inst->tls_cacertdir);
2219 if ( ldap_set_option( NULL, LDAP_OPT_X_TLS_CACERTDIR,
2220 (void *) inst->tls_cacertdir )
2221 != LDAP_OPT_SUCCESS) {
2222 radlog(L_ERR, "rlm_ldap: could not set "
2223 "LDAP_OPT_X_TLS_CACERTDIR option to %s", inst->tls_cacertdir);
2227 if (strcmp(TLS_DEFAULT_VERIFY, inst->tls_require_cert ) != 0 ) {
2228 DEBUG("rlm_ldap: setting TLS Require Cert to %s",
2229 inst->tls_require_cert);
2233 #ifdef HAVE_LDAP_INT_TLS_CONFIG
2234 if (ldap_int_tls_config(NULL, LDAP_OPT_X_TLS_REQUIRE_CERT,
2235 (inst->tls_require_cert)) != LDAP_OPT_SUCCESS) {
2236 radlog(L_ERR, "rlm_ldap: could not set "
2237 "LDAP_OPT_X_TLS_REQUIRE_CERT option to %s",
2238 inst->tls_require_cert);
2242 if (inst->tls_certfile != NULL) {
2243 DEBUG("rlm_ldap: setting TLS Cert File to %s", inst->tls_certfile);
2245 if (ldap_set_option(NULL, LDAP_OPT_X_TLS_CERTFILE,
2246 (void *) inst->tls_certfile)
2247 != LDAP_OPT_SUCCESS) {
2248 radlog(L_ERR, "rlm_ldap: could not set "
2249 "LDAP_OPT_X_TLS_CERTFILE option to %s",
2250 inst->tls_certfile);
2254 if (inst->tls_keyfile != NULL) {
2255 DEBUG("rlm_ldap: setting TLS Key File to %s",
2258 if ( ldap_set_option( NULL, LDAP_OPT_X_TLS_KEYFILE,
2259 (void *) inst->tls_keyfile )
2260 != LDAP_OPT_SUCCESS) {
2261 radlog(L_ERR, "rlm_ldap: could not set "
2262 "LDAP_OPT_X_TLS_KEYFILE option to %s",
2267 if (inst->tls_randfile != NULL) {
2268 DEBUG("rlm_ldap: setting TLS Key File to %s",
2269 inst->tls_randfile);
2271 if (ldap_set_option(NULL, LDAP_OPT_X_TLS_RANDOM_FILE,
2272 (void *) inst->tls_randfile)
2273 != LDAP_OPT_SUCCESS) {
2274 radlog(L_ERR, "rlm_ldap: could not set "
2275 "LDAP_OPT_X_TLS_RANDOM_FILE option to %s",
2276 inst->tls_randfile);
2280 if (inst->start_tls) {
2281 DEBUG("rlm_ldap: starting TLS");
2282 rc = ldap_start_tls_s(ld, NULL, NULL);
2283 if (rc != LDAP_SUCCESS) {
2284 DEBUG("rlm_ldap: ldap_start_tls_s()");
2285 ldap_get_option(ld, LDAP_OPT_ERROR_NUMBER,
2287 radlog(L_ERR, "rlm_ldap: could not start TLS %s",
2288 ldap_err2string(ldap_errno));
2289 *result = RLM_MODULE_FAIL;
2294 #endif /* HAVE_LDAP_START_TLS */
2297 DEBUG("rlm_ldap: bind as %s/%s to %s",
2298 dn, password, inst->server);
2300 DEBUG("rlm_ldap: bind as %s/%s to %s:%d",
2301 dn, password, inst->server, inst->port);
2304 msgid = ldap_bind(ld, dn, password,LDAP_AUTH_SIMPLE);
2306 ldap_get_option(ld, LDAP_OPT_ERROR_NUMBER, &ldap_errno);
2308 ldap_get_option(ld, LDAP_OPT_ERROR_STRING, err);
2311 radlog(L_ERR, "rlm_ldap: %s bind to %s failed: %s",
2312 dn, inst->server, ldap_err2string(ldap_errno));
2314 radlog(L_ERR, "rlm_ldap: %s bind to %s:%d failed: %s",
2315 dn, inst->server, inst->port,
2316 ldap_err2string(ldap_errno));
2318 *result = RLM_MODULE_FAIL;
2322 DEBUG("rlm_ldap: waiting for bind result ...");
2324 rc = ldap_result(ld, msgid, 1, &(inst->timeout), &res);
2327 DEBUG("rlm_ldap: ldap_result()");
2328 ldap_get_option(ld, LDAP_OPT_ERROR_NUMBER, &ldap_errno);
2330 ldap_get_option(ld, LDAP_OPT_ERROR_STRING, err);
2333 radlog(L_ERR, "rlm_ldap: %s bind to %s failed: %s",
2334 dn, inst->server, (rc == 0) ? "timeout" : ldap_err2string(ldap_errno));
2336 radlog(L_ERR, "rlm_ldap: %s bind to %s:%d failed: %s",
2337 dn, inst->server, inst->port,
2338 (rc == 0) ? "timeout" : ldap_err2string(ldap_errno));
2340 *result = RLM_MODULE_FAIL;
2345 ldap_errno = ldap_result2error(ld, res, 1);
2346 switch (ldap_errno) {
2348 DEBUG("rlm_ldap: Bind was successful");
2349 *result = RLM_MODULE_OK;
2352 case LDAP_INVALID_CREDENTIALS:
2354 DEBUG("rlm_ldap: Bind failed with invalid credentials");
2355 *result = RLM_MODULE_REJECT;
2357 radlog(L_ERR, "rlm_ldap: LDAP login failed: check identity, password settings in ldap section of radiusd.conf");
2358 *result = RLM_MODULE_FAIL;
2361 ldap_get_option(ld, LDAP_OPT_ERROR_STRING, err);
2367 radlog(L_ERR,"rlm_ldap: %s bind to %s failed %s",
2368 dn, inst->server, ldap_err2string(ldap_errno));
2370 radlog(L_ERR,"rlm_ldap: %s bind to %s:%d failed %s",
2371 dn, inst->server, inst->port,
2372 ldap_err2string(ldap_errno));
2374 *result = RLM_MODULE_FAIL;
2376 ldap_get_option(ld, LDAP_OPT_ERROR_STRING, err);
2380 if (*result != RLM_MODULE_OK) {
2387 /*****************************************************************************
2389 * Detach from the LDAP server and cleanup internal state.
2391 *****************************************************************************/
2393 ldap_detach(void *instance)
2395 ldap_instance *inst = instance;
2396 TLDAP_RADIUS *pair, *nextpair;
2401 for (i = 0;i < inst->num_conns; i++) {
2402 if (inst->conns[i].ld){
2403 ldap_unbind_s(inst->conns[i].ld);
2405 pthread_mutex_destroy(&inst->conns[i].mutex);
2411 if (inst->apc_conns){
2414 for (i = 0; i < inst->num_conns; i++) {
2415 if (inst->apc_conns[i].ld){
2416 ldap_unbind_s(inst->apc_conns[i].ld);
2418 pthread_mutex_destroy(&inst->apc_conns[i].mutex);
2420 free(inst->apc_conns);
2424 pair = inst->check_item_map;
2426 while (pair != NULL) {
2427 nextpair = pair->next;
2429 free(pair->radius_attr);
2434 pair = inst->reply_item_map;
2436 while (pair != NULL) {
2437 nextpair = pair->next;
2439 free(pair->radius_attr);
2447 paircompare_unregister(PW_LDAP_GROUP, ldap_groupcmp);
2448 xlat_unregister(inst->xlat_name,ldap_xlat);
2449 free(inst->xlat_name);
2459 fieldcpy(char *string, char **uptr)
2464 while (*ptr == ' ' || *ptr == '\t') {
2469 while (*ptr != '"' && *ptr != '\0' && *ptr != '\n') {
2479 while (*ptr != ' ' && *ptr != '\t' && *ptr != '\0' && *ptr != '\n' &&
2480 *ptr != '=' && *ptr != ',') {
2490 * Copied from src/lib/token.c
2492 static const FR_NAME_NUMBER tokens[] = {
2493 { "=~", T_OP_REG_EQ, }, /* order is important! */
2494 { "!~", T_OP_REG_NE, },
2495 { "{", T_LCBRACE, },
2496 { "}", T_RCBRACE, },
2500 { "+=", T_OP_ADD, },
2501 { "-=", T_OP_SUB, },
2502 { ":=", T_OP_SET, },
2503 { "=*", T_OP_CMP_TRUE, },
2504 { "!*", T_OP_CMP_FALSE, },
2505 { "==", T_OP_CMP_EQ, },
2515 /*****************************************************************************
2516 * Get RADIUS attributes from LDAP object
2517 * ( according to draft-adoba-radius-05.txt
2518 * <http://www.ietf.org/internet-drafts/draft-adoba-radius-05.txt> )
2520 *****************************************************************************/
2521 static VALUE_PAIR *ldap_pairget(LDAP *ld, LDAPMessage *entry,
2522 TLDAP_RADIUS *item_map,
2523 VALUE_PAIR **pairs, int is_check)
2530 TLDAP_RADIUS *element;
2531 FR_TOKEN token, operator;
2532 int is_generic_attribute;
2533 char buf[MAX_STRING_LEN];
2534 VALUE_PAIR *pairlist = NULL;
2535 VALUE_PAIR *newpair = NULL;
2536 char do_xlat = FALSE;
2537 char print_buffer[2048];
2540 * check if there is a mapping from this LDAP attribute
2541 * to a RADIUS attribute
2543 for (element = item_map; element != NULL; element = element->next) {
2545 * No mapping, skip it.
2547 if ((vals = ldap_get_values(ld,entry,element->attr)) == NULL)
2551 * Check whether this is a one-to-one-mapped ldap
2552 * attribute or a generic attribute and set flag
2555 if (strcasecmp(element->radius_attr, GENERIC_ATTRIBUTE_ID)==0)
2556 is_generic_attribute = 1;
2558 is_generic_attribute = 0;
2561 * Find out how many values there are for the
2562 * attribute and extract all of them.
2564 vals_count = ldap_count_values(vals);
2566 for (vals_idx = 0; vals_idx < vals_count; vals_idx++) {
2567 value = vals[vals_idx];
2569 if (is_generic_attribute) {
2571 * This is a generic attribute.
2573 FR_TOKEN dummy; /* makes pairread happy */
2575 /* not sure if using pairread here is ok ... */
2576 if ( (newpair = pairread(&value, &dummy)) != NULL) {
2577 DEBUG("rlm_ldap: extracted attribute %s from generic item %s",
2578 newpair->name, vals[vals_idx]);
2579 pairadd(&pairlist, newpair);
2581 radlog(L_ERR, "rlm_ldap: parsing %s failed: %s",
2582 element->attr, vals[vals_idx]);
2586 * This is a one-to-one-mapped attribute
2589 operator = gettoken(&ptr, buf, sizeof(buf));
2590 if (operator < T_EQSTART || operator > T_EQEND) {
2591 /* no leading operator found */
2592 if (element->operator != T_OP_INVALID)
2593 operator = element->operator;
2595 operator = T_OP_CMP_EQ;
2599 /* the value is after the operator */
2604 * Do xlat if the *entire* string
2607 if ((value[0] == '\'' || value[0] == '"' ||
2609 (value[0] == value[strlen(value)-1])) {
2611 token = gettoken(&ptr, buf, sizeof(buf));
2613 /* take the unquoted string */
2614 case T_SINGLE_QUOTED_STRING:
2615 case T_DOUBLE_QUOTED_STRING:
2619 /* the value will be xlat'ed later */
2620 case T_BACK_QUOTED_STRING:
2625 /* keep the original string */
2630 if (value[0] == '\0') {
2631 DEBUG("rlm_ldap: Attribute %s has no value", element->attr);
2638 newpair = pairmake(element->radius_attr,
2639 do_xlat ? NULL : value,
2641 if (newpair == NULL) {
2642 radlog(L_ERR, "rlm_ldap: Failed to create the pair: %s", librad_errstr);
2647 newpair->flags.do_xlat = 1;
2648 strlcpy(newpair->vp_strvalue, buf,
2649 sizeof(newpair->vp_strvalue));
2650 newpair->length = 0;
2652 vp_prints(print_buffer, sizeof(print_buffer),
2654 DEBUG("rlm_ldap: LDAP attribute %s as RADIUS attribute %s",
2655 element->attr, print_buffer);
2659 * Add the pair into the packet.
2662 pairdelete(pairs, newpair->attribute);
2664 pairadd(&pairlist, newpair);
2667 ldap_value_free(vals);
2673 /* globally exported name */
2674 module_t rlm_ldap = {
2677 RLM_TYPE_THREAD_SAFE, /* type: reserved */
2678 ldap_instantiate, /* instantiation */
2679 ldap_detach, /* detach */
2681 ldap_authenticate, /* authentication */
2682 ldap_authorize, /* authorization */
2683 NULL, /* preaccounting */
2684 NULL, /* accounting */
2685 NULL, /* checksimul */
2686 NULL, /* pre-proxy */
2687 NULL, /* post-proxy */
2689 ldap_postauth /* post-auth */